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linux_dsm_epyc7002/drivers/net/ethernet/intel/i40e/i40e_main.c
Mitch Williams c4e1868c3a i40e: Add support for configuring VF RSS 
Add support for configuring RSS on behalf of the VFs. This removes the
burden of dealing with different hardware interfaces from the VF
drivers, allowing for better future compatibility.

Change-ID: Icea75d3f37241ee8e447be5779e5abb53ddf04c0
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-04-26 03:34:32 -07:00

11670 lines
319 KiB
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/*******************************************************************************
*
* Intel Ethernet Controller XL710 Family Linux Driver
* Copyright(c) 2013 - 2016 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
******************************************************************************/
#include <linux/etherdevice.h>
#include <linux/of_net.h>
#include <linux/pci.h>
/* Local includes */
#include "i40e.h"
#include "i40e_diag.h"
#if IS_ENABLED(CONFIG_VXLAN)
#include <net/vxlan.h>
#endif
#if IS_ENABLED(CONFIG_GENEVE)
#include <net/geneve.h>
#endif
const char i40e_driver_name[] = "i40e";
static const char i40e_driver_string[] =
"Intel(R) Ethernet Connection XL710 Network Driver";
#define DRV_KERN "-k"
#define DRV_VERSION_MAJOR 1
#define DRV_VERSION_MINOR 5
#define DRV_VERSION_BUILD 5
#define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
__stringify(DRV_VERSION_MINOR) "." \
__stringify(DRV_VERSION_BUILD) DRV_KERN
const char i40e_driver_version_str[] = DRV_VERSION;
static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
/* a bit of forward declarations */
static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
static void i40e_handle_reset_warning(struct i40e_pf *pf);
static int i40e_add_vsi(struct i40e_vsi *vsi);
static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
static int i40e_setup_misc_vector(struct i40e_pf *pf);
static void i40e_determine_queue_usage(struct i40e_pf *pf);
static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
u16 rss_table_size, u16 rss_size);
static void i40e_fdir_sb_setup(struct i40e_pf *pf);
static int i40e_veb_get_bw_info(struct i40e_veb *veb);
/* i40e_pci_tbl - PCI Device ID Table
*
* Last entry must be all 0s
*
* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
* Class, Class Mask, private data (not used) }
*/
static const struct pci_device_id i40e_pci_tbl[] = {
{PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
{PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
/* required last entry */
{0, }
};
MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
#define I40E_MAX_VF_COUNT 128
static int debug = -1;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
static struct workqueue_struct *i40e_wq;
/**
* i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to fill out
* @size: size of memory requested
* @alignment: what to align the allocation to
**/
int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
u64 size, u32 alignment)
{
struct i40e_pf *pf = (struct i40e_pf *)hw->back;
mem->size = ALIGN(size, alignment);
mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
&mem->pa, GFP_KERNEL);
if (!mem->va)
return -ENOMEM;
return 0;
}
/**
* i40e_free_dma_mem_d - OS specific memory free for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to free
**/
int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
{
struct i40e_pf *pf = (struct i40e_pf *)hw->back;
dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
mem->va = NULL;
mem->pa = 0;
mem->size = 0;
return 0;
}
/**
* i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to fill out
* @size: size of memory requested
**/
int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
u32 size)
{
mem->size = size;
mem->va = kzalloc(size, GFP_KERNEL);
if (!mem->va)
return -ENOMEM;
return 0;
}
/**
* i40e_free_virt_mem_d - OS specific memory free for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to free
**/
int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
{
/* it's ok to kfree a NULL pointer */
kfree(mem->va);
mem->va = NULL;
mem->size = 0;
return 0;
}
/**
* i40e_get_lump - find a lump of free generic resource
* @pf: board private structure
* @pile: the pile of resource to search
* @needed: the number of items needed
* @id: an owner id to stick on the items assigned
*
* Returns the base item index of the lump, or negative for error
*
* The search_hint trick and lack of advanced fit-finding only work
* because we're highly likely to have all the same size lump requests.
* Linear search time and any fragmentation should be minimal.
**/
static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
u16 needed, u16 id)
{
int ret = -ENOMEM;
int i, j;
if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
dev_info(&pf->pdev->dev,
"param err: pile=%p needed=%d id=0x%04x\n",
pile, needed, id);
return -EINVAL;
}
/* start the linear search with an imperfect hint */
i = pile->search_hint;
while (i < pile->num_entries) {
/* skip already allocated entries */
if (pile->list[i] & I40E_PILE_VALID_BIT) {
i++;
continue;
}
/* do we have enough in this lump? */
for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
if (pile->list[i+j] & I40E_PILE_VALID_BIT)
break;
}
if (j == needed) {
/* there was enough, so assign it to the requestor */
for (j = 0; j < needed; j++)
pile->list[i+j] = id | I40E_PILE_VALID_BIT;
ret = i;
pile->search_hint = i + j;
break;
}
/* not enough, so skip over it and continue looking */
i += j;
}
return ret;
}
/**
* i40e_put_lump - return a lump of generic resource
* @pile: the pile of resource to search
* @index: the base item index
* @id: the owner id of the items assigned
*
* Returns the count of items in the lump
**/
static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
{
int valid_id = (id | I40E_PILE_VALID_BIT);
int count = 0;
int i;
if (!pile || index >= pile->num_entries)
return -EINVAL;
for (i = index;
i < pile->num_entries && pile->list[i] == valid_id;
i++) {
pile->list[i] = 0;
count++;
}
if (count && index < pile->search_hint)
pile->search_hint = index;
return count;
}
/**
* i40e_find_vsi_from_id - searches for the vsi with the given id
* @pf - the pf structure to search for the vsi
* @id - id of the vsi it is searching for
**/
struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
{
int i;
for (i = 0; i < pf->num_alloc_vsi; i++)
if (pf->vsi[i] && (pf->vsi[i]->id == id))
return pf->vsi[i];
return NULL;
}
/**
* i40e_service_event_schedule - Schedule the service task to wake up
* @pf: board private structure
*
* If not already scheduled, this puts the task into the work queue
**/
void i40e_service_event_schedule(struct i40e_pf *pf)
{
if (!test_bit(__I40E_DOWN, &pf->state) &&
!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
!test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
queue_work(i40e_wq, &pf->service_task);
}
/**
* i40e_tx_timeout - Respond to a Tx Hang
* @netdev: network interface device structure
*
* If any port has noticed a Tx timeout, it is likely that the whole
* device is munged, not just the one netdev port, so go for the full
* reset.
**/
#ifdef I40E_FCOE
void i40e_tx_timeout(struct net_device *netdev)
#else
static void i40e_tx_timeout(struct net_device *netdev)
#endif
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_ring *tx_ring = NULL;
unsigned int i, hung_queue = 0;
u32 head, val;
pf->tx_timeout_count++;
/* find the stopped queue the same way the stack does */
for (i = 0; i < netdev->num_tx_queues; i++) {
struct netdev_queue *q;
unsigned long trans_start;
q = netdev_get_tx_queue(netdev, i);
trans_start = q->trans_start ? : netdev->trans_start;
if (netif_xmit_stopped(q) &&
time_after(jiffies,
(trans_start + netdev->watchdog_timeo))) {
hung_queue = i;
break;
}
}
if (i == netdev->num_tx_queues) {
netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
} else {
/* now that we have an index, find the tx_ring struct */
for (i = 0; i < vsi->num_queue_pairs; i++) {
if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
if (hung_queue ==
vsi->tx_rings[i]->queue_index) {
tx_ring = vsi->tx_rings[i];
break;
}
}
}
}
if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
pf->tx_timeout_recovery_level = 1; /* reset after some time */
else if (time_before(jiffies,
(pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
return; /* don't do any new action before the next timeout */
if (tx_ring) {
head = i40e_get_head(tx_ring);
/* Read interrupt register */
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
val = rd32(&pf->hw,
I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
tx_ring->vsi->base_vector - 1));
else
val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
vsi->seid, hung_queue, tx_ring->next_to_clean,
head, tx_ring->next_to_use,
readl(tx_ring->tail), val);
}
pf->tx_timeout_last_recovery = jiffies;
netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
pf->tx_timeout_recovery_level, hung_queue);
switch (pf->tx_timeout_recovery_level) {
case 1:
set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
break;
case 2:
set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
break;
case 3:
set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
break;
default:
netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
break;
}
i40e_service_event_schedule(pf);
pf->tx_timeout_recovery_level++;
}
/**
* i40e_release_rx_desc - Store the new tail and head values
* @rx_ring: ring to bump
* @val: new head index
**/
static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
{
rx_ring->next_to_use = val;
/* Force memory writes to complete before letting h/w
* know there are new descriptors to fetch. (Only
* applicable for weak-ordered memory model archs,
* such as IA-64).
*/
wmb();
writel(val, rx_ring->tail);
}
/**
* i40e_get_vsi_stats_struct - Get System Network Statistics
* @vsi: the VSI we care about
*
* Returns the address of the device statistics structure.
* The statistics are actually updated from the service task.
**/
struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
{
return &vsi->net_stats;
}
/**
* i40e_get_netdev_stats_struct - Get statistics for netdev interface
* @netdev: network interface device structure
*
* Returns the address of the device statistics structure.
* The statistics are actually updated from the service task.
**/
#ifdef I40E_FCOE
struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
struct net_device *netdev,
struct rtnl_link_stats64 *stats)
#else
static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
struct net_device *netdev,
struct rtnl_link_stats64 *stats)
#endif
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_ring *tx_ring, *rx_ring;
struct i40e_vsi *vsi = np->vsi;
struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
int i;
if (test_bit(__I40E_DOWN, &vsi->state))
return stats;
if (!vsi->tx_rings)
return stats;
rcu_read_lock();
for (i = 0; i < vsi->num_queue_pairs; i++) {
u64 bytes, packets;
unsigned int start;
tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
if (!tx_ring)
continue;
do {
start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
packets = tx_ring->stats.packets;
bytes = tx_ring->stats.bytes;
} while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
stats->tx_packets += packets;
stats->tx_bytes += bytes;
rx_ring = &tx_ring[1];
do {
start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
packets = rx_ring->stats.packets;
bytes = rx_ring->stats.bytes;
} while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
stats->rx_packets += packets;
stats->rx_bytes += bytes;
}
rcu_read_unlock();
/* following stats updated by i40e_watchdog_subtask() */
stats->multicast = vsi_stats->multicast;
stats->tx_errors = vsi_stats->tx_errors;
stats->tx_dropped = vsi_stats->tx_dropped;
stats->rx_errors = vsi_stats->rx_errors;
stats->rx_dropped = vsi_stats->rx_dropped;
stats->rx_crc_errors = vsi_stats->rx_crc_errors;
stats->rx_length_errors = vsi_stats->rx_length_errors;
return stats;
}
/**
* i40e_vsi_reset_stats - Resets all stats of the given vsi
* @vsi: the VSI to have its stats reset
**/
void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
{
struct rtnl_link_stats64 *ns;
int i;
if (!vsi)
return;
ns = i40e_get_vsi_stats_struct(vsi);
memset(ns, 0, sizeof(*ns));
memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
if (vsi->rx_rings && vsi->rx_rings[0]) {
for (i = 0; i < vsi->num_queue_pairs; i++) {
memset(&vsi->rx_rings[i]->stats, 0,
sizeof(vsi->rx_rings[i]->stats));
memset(&vsi->rx_rings[i]->rx_stats, 0,
sizeof(vsi->rx_rings[i]->rx_stats));
memset(&vsi->tx_rings[i]->stats, 0,
sizeof(vsi->tx_rings[i]->stats));
memset(&vsi->tx_rings[i]->tx_stats, 0,
sizeof(vsi->tx_rings[i]->tx_stats));
}
}
vsi->stat_offsets_loaded = false;
}
/**
* i40e_pf_reset_stats - Reset all of the stats for the given PF
* @pf: the PF to be reset
**/
void i40e_pf_reset_stats(struct i40e_pf *pf)
{
int i;
memset(&pf->stats, 0, sizeof(pf->stats));
memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
pf->stat_offsets_loaded = false;
for (i = 0; i < I40E_MAX_VEB; i++) {
if (pf->veb[i]) {
memset(&pf->veb[i]->stats, 0,
sizeof(pf->veb[i]->stats));
memset(&pf->veb[i]->stats_offsets, 0,
sizeof(pf->veb[i]->stats_offsets));
pf->veb[i]->stat_offsets_loaded = false;
}
}
}
/**
* i40e_stat_update48 - read and update a 48 bit stat from the chip
* @hw: ptr to the hardware info
* @hireg: the high 32 bit reg to read
* @loreg: the low 32 bit reg to read
* @offset_loaded: has the initial offset been loaded yet
* @offset: ptr to current offset value
* @stat: ptr to the stat
*
* Since the device stats are not reset at PFReset, they likely will not
* be zeroed when the driver starts. We'll save the first values read
* and use them as offsets to be subtracted from the raw values in order
* to report stats that count from zero. In the process, we also manage
* the potential roll-over.
**/
static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
bool offset_loaded, u64 *offset, u64 *stat)
{
u64 new_data;
if (hw->device_id == I40E_DEV_ID_QEMU) {
new_data = rd32(hw, loreg);
new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
} else {
new_data = rd64(hw, loreg);
}
if (!offset_loaded)
*offset = new_data;
if (likely(new_data >= *offset))
*stat = new_data - *offset;
else
*stat = (new_data + BIT_ULL(48)) - *offset;
*stat &= 0xFFFFFFFFFFFFULL;
}
/**
* i40e_stat_update32 - read and update a 32 bit stat from the chip
* @hw: ptr to the hardware info
* @reg: the hw reg to read
* @offset_loaded: has the initial offset been loaded yet
* @offset: ptr to current offset value
* @stat: ptr to the stat
**/
static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
bool offset_loaded, u64 *offset, u64 *stat)
{
u32 new_data;
new_data = rd32(hw, reg);
if (!offset_loaded)
*offset = new_data;
if (likely(new_data >= *offset))
*stat = (u32)(new_data - *offset);
else
*stat = (u32)((new_data + BIT_ULL(32)) - *offset);
}
/**
* i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
* @vsi: the VSI to be updated
**/
void i40e_update_eth_stats(struct i40e_vsi *vsi)
{
int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
struct i40e_eth_stats *oes;
struct i40e_eth_stats *es; /* device's eth stats */
es = &vsi->eth_stats;
oes = &vsi->eth_stats_offsets;
/* Gather up the stats that the hw collects */
i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
vsi->stat_offsets_loaded,
&oes->tx_errors, &es->tx_errors);
i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
vsi->stat_offsets_loaded,
&oes->rx_discards, &es->rx_discards);
i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
vsi->stat_offsets_loaded,
&oes->rx_unknown_protocol, &es->rx_unknown_protocol);
i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
vsi->stat_offsets_loaded,
&oes->tx_errors, &es->tx_errors);
i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
I40E_GLV_GORCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->rx_bytes, &es->rx_bytes);
i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
I40E_GLV_UPRCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->rx_unicast, &es->rx_unicast);
i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
I40E_GLV_MPRCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->rx_multicast, &es->rx_multicast);
i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
I40E_GLV_BPRCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->rx_broadcast, &es->rx_broadcast);
i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
I40E_GLV_GOTCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->tx_bytes, &es->tx_bytes);
i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
I40E_GLV_UPTCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->tx_unicast, &es->tx_unicast);
i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
I40E_GLV_MPTCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->tx_multicast, &es->tx_multicast);
i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
I40E_GLV_BPTCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->tx_broadcast, &es->tx_broadcast);
vsi->stat_offsets_loaded = true;
}
/**
* i40e_update_veb_stats - Update Switch component statistics
* @veb: the VEB being updated
**/
static void i40e_update_veb_stats(struct i40e_veb *veb)
{
struct i40e_pf *pf = veb->pf;
struct i40e_hw *hw = &pf->hw;
struct i40e_eth_stats *oes;
struct i40e_eth_stats *es; /* device's eth stats */
struct i40e_veb_tc_stats *veb_oes;
struct i40e_veb_tc_stats *veb_es;
int i, idx = 0;
idx = veb->stats_idx;
es = &veb->stats;
oes = &veb->stats_offsets;
veb_es = &veb->tc_stats;
veb_oes = &veb->tc_stats_offsets;
/* Gather up the stats that the hw collects */
i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
veb->stat_offsets_loaded,
&oes->tx_discards, &es->tx_discards);
if (hw->revision_id > 0)
i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
veb->stat_offsets_loaded,
&oes->rx_unknown_protocol,
&es->rx_unknown_protocol);
i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
veb->stat_offsets_loaded,
&oes->rx_bytes, &es->rx_bytes);
i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
veb->stat_offsets_loaded,
&oes->rx_unicast, &es->rx_unicast);
i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
veb->stat_offsets_loaded,
&oes->rx_multicast, &es->rx_multicast);
i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
veb->stat_offsets_loaded,
&oes->rx_broadcast, &es->rx_broadcast);
i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
veb->stat_offsets_loaded,
&oes->tx_bytes, &es->tx_bytes);
i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
veb->stat_offsets_loaded,
&oes->tx_unicast, &es->tx_unicast);
i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
veb->stat_offsets_loaded,
&oes->tx_multicast, &es->tx_multicast);
i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
veb->stat_offsets_loaded,
&oes->tx_broadcast, &es->tx_broadcast);
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
I40E_GLVEBTC_RPCL(i, idx),
veb->stat_offsets_loaded,
&veb_oes->tc_rx_packets[i],
&veb_es->tc_rx_packets[i]);
i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
I40E_GLVEBTC_RBCL(i, idx),
veb->stat_offsets_loaded,
&veb_oes->tc_rx_bytes[i],
&veb_es->tc_rx_bytes[i]);
i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
I40E_GLVEBTC_TPCL(i, idx),
veb->stat_offsets_loaded,
&veb_oes->tc_tx_packets[i],
&veb_es->tc_tx_packets[i]);
i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
I40E_GLVEBTC_TBCL(i, idx),
veb->stat_offsets_loaded,
&veb_oes->tc_tx_bytes[i],
&veb_es->tc_tx_bytes[i]);
}
veb->stat_offsets_loaded = true;
}
#ifdef I40E_FCOE
/**
* i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
* @vsi: the VSI that is capable of doing FCoE
**/
static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
struct i40e_fcoe_stats *ofs;
struct i40e_fcoe_stats *fs; /* device's eth stats */
int idx;
if (vsi->type != I40E_VSI_FCOE)
return;
idx = hw->pf_id + I40E_FCOE_PF_STAT_OFFSET;
fs = &vsi->fcoe_stats;
ofs = &vsi->fcoe_stats_offsets;
i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
vsi->fcoe_stat_offsets_loaded,
&ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
vsi->fcoe_stat_offsets_loaded,
&ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
vsi->fcoe_stat_offsets_loaded,
&ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
vsi->fcoe_stat_offsets_loaded,
&ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
vsi->fcoe_stat_offsets_loaded,
&ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
vsi->fcoe_stat_offsets_loaded,
&ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
vsi->fcoe_stat_offsets_loaded,
&ofs->fcoe_last_error, &fs->fcoe_last_error);
i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
vsi->fcoe_stat_offsets_loaded,
&ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
vsi->fcoe_stat_offsets_loaded = true;
}
#endif
/**
* i40e_update_vsi_stats - Update the vsi statistics counters.
* @vsi: the VSI to be updated
*
* There are a few instances where we store the same stat in a
* couple of different structs. This is partly because we have
* the netdev stats that need to be filled out, which is slightly
* different from the "eth_stats" defined by the chip and used in
* VF communications. We sort it out here.
**/
static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
struct rtnl_link_stats64 *ons;
struct rtnl_link_stats64 *ns; /* netdev stats */
struct i40e_eth_stats *oes;
struct i40e_eth_stats *es; /* device's eth stats */
u32 tx_restart, tx_busy;
u64 tx_lost_interrupt;
struct i40e_ring *p;
u32 rx_page, rx_buf;
u64 bytes, packets;
unsigned int start;
u64 tx_linearize;
u64 tx_force_wb;
u64 rx_p, rx_b;
u64 tx_p, tx_b;
u16 q;
if (test_bit(__I40E_DOWN, &vsi->state) ||
test_bit(__I40E_CONFIG_BUSY, &pf->state))
return;
ns = i40e_get_vsi_stats_struct(vsi);
ons = &vsi->net_stats_offsets;
es = &vsi->eth_stats;
oes = &vsi->eth_stats_offsets;
/* Gather up the netdev and vsi stats that the driver collects
* on the fly during packet processing
*/
rx_b = rx_p = 0;
tx_b = tx_p = 0;
tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
tx_lost_interrupt = 0;
rx_page = 0;
rx_buf = 0;
rcu_read_lock();
for (q = 0; q < vsi->num_queue_pairs; q++) {
/* locate Tx ring */
p = ACCESS_ONCE(vsi->tx_rings[q]);
do {
start = u64_stats_fetch_begin_irq(&p->syncp);
packets = p->stats.packets;
bytes = p->stats.bytes;
} while (u64_stats_fetch_retry_irq(&p->syncp, start));
tx_b += bytes;
tx_p += packets;
tx_restart += p->tx_stats.restart_queue;
tx_busy += p->tx_stats.tx_busy;
tx_linearize += p->tx_stats.tx_linearize;
tx_force_wb += p->tx_stats.tx_force_wb;
tx_lost_interrupt += p->tx_stats.tx_lost_interrupt;
/* Rx queue is part of the same block as Tx queue */
p = &p[1];
do {
start = u64_stats_fetch_begin_irq(&p->syncp);
packets = p->stats.packets;
bytes = p->stats.bytes;
} while (u64_stats_fetch_retry_irq(&p->syncp, start));
rx_b += bytes;
rx_p += packets;
rx_buf += p->rx_stats.alloc_buff_failed;
rx_page += p->rx_stats.alloc_page_failed;
}
rcu_read_unlock();
vsi->tx_restart = tx_restart;
vsi->tx_busy = tx_busy;
vsi->tx_linearize = tx_linearize;
vsi->tx_force_wb = tx_force_wb;
vsi->tx_lost_interrupt = tx_lost_interrupt;
vsi->rx_page_failed = rx_page;
vsi->rx_buf_failed = rx_buf;
ns->rx_packets = rx_p;
ns->rx_bytes = rx_b;
ns->tx_packets = tx_p;
ns->tx_bytes = tx_b;
/* update netdev stats from eth stats */
i40e_update_eth_stats(vsi);
ons->tx_errors = oes->tx_errors;
ns->tx_errors = es->tx_errors;
ons->multicast = oes->rx_multicast;
ns->multicast = es->rx_multicast;
ons->rx_dropped = oes->rx_discards;
ns->rx_dropped = es->rx_discards;
ons->tx_dropped = oes->tx_discards;
ns->tx_dropped = es->tx_discards;
/* pull in a couple PF stats if this is the main vsi */
if (vsi == pf->vsi[pf->lan_vsi]) {
ns->rx_crc_errors = pf->stats.crc_errors;
ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
ns->rx_length_errors = pf->stats.rx_length_errors;
}
}
/**
* i40e_update_pf_stats - Update the PF statistics counters.
* @pf: the PF to be updated
**/
static void i40e_update_pf_stats(struct i40e_pf *pf)
{
struct i40e_hw_port_stats *osd = &pf->stats_offsets;
struct i40e_hw_port_stats *nsd = &pf->stats;
struct i40e_hw *hw = &pf->hw;
u32 val;
int i;
i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
I40E_GLPRT_GORCL(hw->port),
pf->stat_offsets_loaded,
&osd->eth.rx_bytes, &nsd->eth.rx_bytes);
i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
I40E_GLPRT_GOTCL(hw->port),
pf->stat_offsets_loaded,
&osd->eth.tx_bytes, &nsd->eth.tx_bytes);
i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
pf->stat_offsets_loaded,
&osd->eth.rx_discards,
&nsd->eth.rx_discards);
i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
I40E_GLPRT_UPRCL(hw->port),
pf->stat_offsets_loaded,
&osd->eth.rx_unicast,
&nsd->eth.rx_unicast);
i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
I40E_GLPRT_MPRCL(hw->port),
pf->stat_offsets_loaded,
&osd->eth.rx_multicast,
&nsd->eth.rx_multicast);
i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
I40E_GLPRT_BPRCL(hw->port),
pf->stat_offsets_loaded,
&osd->eth.rx_broadcast,
&nsd->eth.rx_broadcast);
i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
I40E_GLPRT_UPTCL(hw->port),
pf->stat_offsets_loaded,
&osd->eth.tx_unicast,
&nsd->eth.tx_unicast);
i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
I40E_GLPRT_MPTCL(hw->port),
pf->stat_offsets_loaded,
&osd->eth.tx_multicast,
&nsd->eth.tx_multicast);
i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
I40E_GLPRT_BPTCL(hw->port),
pf->stat_offsets_loaded,
&osd->eth.tx_broadcast,
&nsd->eth.tx_broadcast);
i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
pf->stat_offsets_loaded,
&osd->tx_dropped_link_down,
&nsd->tx_dropped_link_down);
i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
pf->stat_offsets_loaded,
&osd->crc_errors, &nsd->crc_errors);
i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
pf->stat_offsets_loaded,
&osd->illegal_bytes, &nsd->illegal_bytes);
i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
pf->stat_offsets_loaded,
&osd->mac_local_faults,
&nsd->mac_local_faults);
i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
pf->stat_offsets_loaded,
&osd->mac_remote_faults,
&nsd->mac_remote_faults);
i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
pf->stat_offsets_loaded,
&osd->rx_length_errors,
&nsd->rx_length_errors);
i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
pf->stat_offsets_loaded,
&osd->link_xon_rx, &nsd->link_xon_rx);
i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
pf->stat_offsets_loaded,
&osd->link_xon_tx, &nsd->link_xon_tx);
i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
pf->stat_offsets_loaded,
&osd->link_xoff_rx, &nsd->link_xoff_rx);
i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
pf->stat_offsets_loaded,
&osd->link_xoff_tx, &nsd->link_xoff_tx);
for (i = 0; i < 8; i++) {
i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
pf->stat_offsets_loaded,
&osd->priority_xoff_rx[i],
&nsd->priority_xoff_rx[i]);
i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
pf->stat_offsets_loaded,
&osd->priority_xon_rx[i],
&nsd->priority_xon_rx[i]);
i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
pf->stat_offsets_loaded,
&osd->priority_xon_tx[i],
&nsd->priority_xon_tx[i]);
i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
pf->stat_offsets_loaded,
&osd->priority_xoff_tx[i],
&nsd->priority_xoff_tx[i]);
i40e_stat_update32(hw,
I40E_GLPRT_RXON2OFFCNT(hw->port, i),
pf->stat_offsets_loaded,
&osd->priority_xon_2_xoff[i],
&nsd->priority_xon_2_xoff[i]);
}
i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
I40E_GLPRT_PRC64L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_64, &nsd->rx_size_64);
i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
I40E_GLPRT_PRC127L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_127, &nsd->rx_size_127);
i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
I40E_GLPRT_PRC255L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_255, &nsd->rx_size_255);
i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
I40E_GLPRT_PRC511L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_511, &nsd->rx_size_511);
i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
I40E_GLPRT_PRC1023L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_1023, &nsd->rx_size_1023);
i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
I40E_GLPRT_PRC1522L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_1522, &nsd->rx_size_1522);
i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
I40E_GLPRT_PRC9522L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_big, &nsd->rx_size_big);
i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
I40E_GLPRT_PTC64L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_64, &nsd->tx_size_64);
i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
I40E_GLPRT_PTC127L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_127, &nsd->tx_size_127);
i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
I40E_GLPRT_PTC255L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_255, &nsd->tx_size_255);
i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
I40E_GLPRT_PTC511L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_511, &nsd->tx_size_511);
i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
I40E_GLPRT_PTC1023L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_1023, &nsd->tx_size_1023);
i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
I40E_GLPRT_PTC1522L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_1522, &nsd->tx_size_1522);
i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
I40E_GLPRT_PTC9522L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_big, &nsd->tx_size_big);
i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
pf->stat_offsets_loaded,
&osd->rx_undersize, &nsd->rx_undersize);
i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
pf->stat_offsets_loaded,
&osd->rx_fragments, &nsd->rx_fragments);
i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
pf->stat_offsets_loaded,
&osd->rx_oversize, &nsd->rx_oversize);
i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
pf->stat_offsets_loaded,
&osd->rx_jabber, &nsd->rx_jabber);
/* FDIR stats */
i40e_stat_update32(hw,
I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
pf->stat_offsets_loaded,
&osd->fd_atr_match, &nsd->fd_atr_match);
i40e_stat_update32(hw,
I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
pf->stat_offsets_loaded,
&osd->fd_sb_match, &nsd->fd_sb_match);
i40e_stat_update32(hw,
I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
pf->stat_offsets_loaded,
&osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
val = rd32(hw, I40E_PRTPM_EEE_STAT);
nsd->tx_lpi_status =
(val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
nsd->rx_lpi_status =
(val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
pf->stat_offsets_loaded,
&osd->tx_lpi_count, &nsd->tx_lpi_count);
i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
pf->stat_offsets_loaded,
&osd->rx_lpi_count, &nsd->rx_lpi_count);
if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
!(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
nsd->fd_sb_status = true;
else
nsd->fd_sb_status = false;
if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
!(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
nsd->fd_atr_status = true;
else
nsd->fd_atr_status = false;
pf->stat_offsets_loaded = true;
}
/**
* i40e_update_stats - Update the various statistics counters.
* @vsi: the VSI to be updated
*
* Update the various stats for this VSI and its related entities.
**/
void i40e_update_stats(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
if (vsi == pf->vsi[pf->lan_vsi])
i40e_update_pf_stats(pf);
i40e_update_vsi_stats(vsi);
#ifdef I40E_FCOE
i40e_update_fcoe_stats(vsi);
#endif
}
/**
* i40e_find_filter - Search VSI filter list for specific mac/vlan filter
* @vsi: the VSI to be searched
* @macaddr: the MAC address
* @vlan: the vlan
* @is_vf: make sure its a VF filter, else doesn't matter
* @is_netdev: make sure its a netdev filter, else doesn't matter
*
* Returns ptr to the filter object or NULL
**/
static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
u8 *macaddr, s16 vlan,
bool is_vf, bool is_netdev)
{
struct i40e_mac_filter *f;
if (!vsi || !macaddr)
return NULL;
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if ((ether_addr_equal(macaddr, f->macaddr)) &&
(vlan == f->vlan) &&
(!is_vf || f->is_vf) &&
(!is_netdev || f->is_netdev))
return f;
}
return NULL;
}
/**
* i40e_find_mac - Find a mac addr in the macvlan filters list
* @vsi: the VSI to be searched
* @macaddr: the MAC address we are searching for
* @is_vf: make sure its a VF filter, else doesn't matter
* @is_netdev: make sure its a netdev filter, else doesn't matter
*
* Returns the first filter with the provided MAC address or NULL if
* MAC address was not found
**/
struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
bool is_vf, bool is_netdev)
{
struct i40e_mac_filter *f;
if (!vsi || !macaddr)
return NULL;
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if ((ether_addr_equal(macaddr, f->macaddr)) &&
(!is_vf || f->is_vf) &&
(!is_netdev || f->is_netdev))
return f;
}
return NULL;
}
/**
* i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
* @vsi: the VSI to be searched
*
* Returns true if VSI is in vlan mode or false otherwise
**/
bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
{
struct i40e_mac_filter *f;
/* Only -1 for all the filters denotes not in vlan mode
* so we have to go through all the list in order to make sure
*/
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if (f->vlan >= 0 || vsi->info.pvid)
return true;
}
return false;
}
/**
* i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
* @vsi: the VSI to be searched
* @macaddr: the mac address to be filtered
* @is_vf: true if it is a VF
* @is_netdev: true if it is a netdev
*
* Goes through all the macvlan filters and adds a
* macvlan filter for each unique vlan that already exists
*
* Returns first filter found on success, else NULL
**/
struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
bool is_vf, bool is_netdev)
{
struct i40e_mac_filter *f;
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if (vsi->info.pvid)
f->vlan = le16_to_cpu(vsi->info.pvid);
if (!i40e_find_filter(vsi, macaddr, f->vlan,
is_vf, is_netdev)) {
if (!i40e_add_filter(vsi, macaddr, f->vlan,
is_vf, is_netdev))
return NULL;
}
}
return list_first_entry_or_null(&vsi->mac_filter_list,
struct i40e_mac_filter, list);
}
/**
* i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
* @vsi: the VSI to be searched
* @macaddr: the mac address to be removed
* @is_vf: true if it is a VF
* @is_netdev: true if it is a netdev
*
* Removes a given MAC address from a VSI, regardless of VLAN
*
* Returns 0 for success, or error
**/
int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
bool is_vf, bool is_netdev)
{
struct i40e_mac_filter *f = NULL;
int changed = 0;
WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
"Missing mac_filter_list_lock\n");
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if ((ether_addr_equal(macaddr, f->macaddr)) &&
(is_vf == f->is_vf) &&
(is_netdev == f->is_netdev)) {
f->counter--;
f->changed = true;
changed = 1;
}
}
if (changed) {
vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
return 0;
}
return -ENOENT;
}
/**
* i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
* @vsi: the PF Main VSI - inappropriate for any other VSI
* @macaddr: the MAC address
*
* Some older firmware configurations set up a default promiscuous VLAN
* filter that needs to be removed.
**/
static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
{
struct i40e_aqc_remove_macvlan_element_data element;
struct i40e_pf *pf = vsi->back;
i40e_status ret;
/* Only appropriate for the PF main VSI */
if (vsi->type != I40E_VSI_MAIN)
return -EINVAL;
memset(&element, 0, sizeof(element));
ether_addr_copy(element.mac_addr, macaddr);
element.vlan_tag = 0;
element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
if (ret)
return -ENOENT;
return 0;
}
/**
* i40e_add_filter - Add a mac/vlan filter to the VSI
* @vsi: the VSI to be searched
* @macaddr: the MAC address
* @vlan: the vlan
* @is_vf: make sure its a VF filter, else doesn't matter
* @is_netdev: make sure its a netdev filter, else doesn't matter
*
* Returns ptr to the filter object or NULL when no memory available.
*
* NOTE: This function is expected to be called with mac_filter_list_lock
* being held.
**/
struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
u8 *macaddr, s16 vlan,
bool is_vf, bool is_netdev)
{
struct i40e_mac_filter *f;
if (!vsi || !macaddr)
return NULL;
f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
if (!f) {
f = kzalloc(sizeof(*f), GFP_ATOMIC);
if (!f)
goto add_filter_out;
ether_addr_copy(f->macaddr, macaddr);
f->vlan = vlan;
f->changed = true;
INIT_LIST_HEAD(&f->list);
list_add_tail(&f->list, &vsi->mac_filter_list);
}
/* increment counter and add a new flag if needed */
if (is_vf) {
if (!f->is_vf) {
f->is_vf = true;
f->counter++;
}
} else if (is_netdev) {
if (!f->is_netdev) {
f->is_netdev = true;
f->counter++;
}
} else {
f->counter++;
}
/* changed tells sync_filters_subtask to
* push the filter down to the firmware
*/
if (f->changed) {
vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
}
add_filter_out:
return f;
}
/**
* i40e_del_filter - Remove a mac/vlan filter from the VSI
* @vsi: the VSI to be searched
* @macaddr: the MAC address
* @vlan: the vlan
* @is_vf: make sure it's a VF filter, else doesn't matter
* @is_netdev: make sure it's a netdev filter, else doesn't matter
*
* NOTE: This function is expected to be called with mac_filter_list_lock
* being held.
**/
void i40e_del_filter(struct i40e_vsi *vsi,
u8 *macaddr, s16 vlan,
bool is_vf, bool is_netdev)
{
struct i40e_mac_filter *f;
if (!vsi || !macaddr)
return;
f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
if (!f || f->counter == 0)
return;
if (is_vf) {
if (f->is_vf) {
f->is_vf = false;
f->counter--;
}
} else if (is_netdev) {
if (f->is_netdev) {
f->is_netdev = false;
f->counter--;
}
} else {
/* make sure we don't remove a filter in use by VF or netdev */
int min_f = 0;
min_f += (f->is_vf ? 1 : 0);
min_f += (f->is_netdev ? 1 : 0);
if (f->counter > min_f)
f->counter--;
}
/* counter == 0 tells sync_filters_subtask to
* remove the filter from the firmware's list
*/
if (f->counter == 0) {
f->changed = true;
vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
}
}
/**
* i40e_set_mac - NDO callback to set mac address
* @netdev: network interface device structure
* @p: pointer to an address structure
*
* Returns 0 on success, negative on failure
**/
#ifdef I40E_FCOE
int i40e_set_mac(struct net_device *netdev, void *p)
#else
static int i40e_set_mac(struct net_device *netdev, void *p)
#endif
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
struct sockaddr *addr = p;
struct i40e_mac_filter *f;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
netdev_info(netdev, "already using mac address %pM\n",
addr->sa_data);
return 0;
}
if (test_bit(__I40E_DOWN, &vsi->back->state) ||
test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
return -EADDRNOTAVAIL;
if (ether_addr_equal(hw->mac.addr, addr->sa_data))
netdev_info(netdev, "returning to hw mac address %pM\n",
hw->mac.addr);
else
netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
if (vsi->type == I40E_VSI_MAIN) {
i40e_status ret;
ret = i40e_aq_mac_address_write(&vsi->back->hw,
I40E_AQC_WRITE_TYPE_LAA_WOL,
addr->sa_data, NULL);
if (ret) {
netdev_info(netdev,
"Addr change for Main VSI failed: %d\n",
ret);
return -EADDRNOTAVAIL;
}
}
if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
struct i40e_aqc_remove_macvlan_element_data element;
memset(&element, 0, sizeof(element));
ether_addr_copy(element.mac_addr, netdev->dev_addr);
element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
} else {
spin_lock_bh(&vsi->mac_filter_list_lock);
i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
false, false);
spin_unlock_bh(&vsi->mac_filter_list_lock);
}
if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
struct i40e_aqc_add_macvlan_element_data element;
memset(&element, 0, sizeof(element));
ether_addr_copy(element.mac_addr, hw->mac.addr);
element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
} else {
spin_lock_bh(&vsi->mac_filter_list_lock);
f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
false, false);
if (f)
f->is_laa = true;
spin_unlock_bh(&vsi->mac_filter_list_lock);
}
ether_addr_copy(netdev->dev_addr, addr->sa_data);
/* schedule our worker thread which will take care of
* applying the new filter changes
*/
i40e_service_event_schedule(vsi->back);
return 0;
}
/**
* i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
* @vsi: the VSI being setup
* @ctxt: VSI context structure
* @enabled_tc: Enabled TCs bitmap
* @is_add: True if called before Add VSI
*
* Setup VSI queue mapping for enabled traffic classes.
**/
#ifdef I40E_FCOE
void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
struct i40e_vsi_context *ctxt,
u8 enabled_tc,
bool is_add)
#else
static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
struct i40e_vsi_context *ctxt,
u8 enabled_tc,
bool is_add)
#endif
{
struct i40e_pf *pf = vsi->back;
u16 sections = 0;
u8 netdev_tc = 0;
u16 numtc = 0;
u16 qcount;
u8 offset;
u16 qmap;
int i;
u16 num_tc_qps = 0;
sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
offset = 0;
if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
/* Find numtc from enabled TC bitmap */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (enabled_tc & BIT(i)) /* TC is enabled */
numtc++;
}
if (!numtc) {
dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
numtc = 1;
}
} else {
/* At least TC0 is enabled in case of non-DCB case */
numtc = 1;
}
vsi->tc_config.numtc = numtc;
vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
/* Number of queues per enabled TC */
/* In MFP case we can have a much lower count of MSIx
* vectors available and so we need to lower the used
* q count.
*/
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
else
qcount = vsi->alloc_queue_pairs;
num_tc_qps = qcount / numtc;
num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
/* Setup queue offset/count for all TCs for given VSI */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
/* See if the given TC is enabled for the given VSI */
if (vsi->tc_config.enabled_tc & BIT(i)) {
/* TC is enabled */
int pow, num_qps;
switch (vsi->type) {
case I40E_VSI_MAIN:
qcount = min_t(int, pf->alloc_rss_size,
num_tc_qps);
break;
#ifdef I40E_FCOE
case I40E_VSI_FCOE:
qcount = num_tc_qps;
break;
#endif
case I40E_VSI_FDIR:
case I40E_VSI_SRIOV:
case I40E_VSI_VMDQ2:
default:
qcount = num_tc_qps;
WARN_ON(i != 0);
break;
}
vsi->tc_config.tc_info[i].qoffset = offset;
vsi->tc_config.tc_info[i].qcount = qcount;
/* find the next higher power-of-2 of num queue pairs */
num_qps = qcount;
pow = 0;
while (num_qps && (BIT_ULL(pow) < qcount)) {
pow++;
num_qps >>= 1;
}
vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
qmap =
(offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
(pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
offset += qcount;
} else {
/* TC is not enabled so set the offset to
* default queue and allocate one queue
* for the given TC.
*/
vsi->tc_config.tc_info[i].qoffset = 0;
vsi->tc_config.tc_info[i].qcount = 1;
vsi->tc_config.tc_info[i].netdev_tc = 0;
qmap = 0;
}
ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
}
/* Set actual Tx/Rx queue pairs */
vsi->num_queue_pairs = offset;
if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
if (vsi->req_queue_pairs > 0)
vsi->num_queue_pairs = vsi->req_queue_pairs;
else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
vsi->num_queue_pairs = pf->num_lan_msix;
}
/* Scheduler section valid can only be set for ADD VSI */
if (is_add) {
sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
ctxt->info.up_enable_bits = enabled_tc;
}
if (vsi->type == I40E_VSI_SRIOV) {
ctxt->info.mapping_flags |=
cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
for (i = 0; i < vsi->num_queue_pairs; i++)
ctxt->info.queue_mapping[i] =
cpu_to_le16(vsi->base_queue + i);
} else {
ctxt->info.mapping_flags |=
cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
}
ctxt->info.valid_sections |= cpu_to_le16(sections);
}
/**
* i40e_set_rx_mode - NDO callback to set the netdev filters
* @netdev: network interface device structure
**/
#ifdef I40E_FCOE
void i40e_set_rx_mode(struct net_device *netdev)
#else
static void i40e_set_rx_mode(struct net_device *netdev)
#endif
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_mac_filter *f, *ftmp;
struct i40e_vsi *vsi = np->vsi;
struct netdev_hw_addr *uca;
struct netdev_hw_addr *mca;
struct netdev_hw_addr *ha;
spin_lock_bh(&vsi->mac_filter_list_lock);
/* add addr if not already in the filter list */
netdev_for_each_uc_addr(uca, netdev) {
if (!i40e_find_mac(vsi, uca->addr, false, true)) {
if (i40e_is_vsi_in_vlan(vsi))
i40e_put_mac_in_vlan(vsi, uca->addr,
false, true);
else
i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
false, true);
}
}
netdev_for_each_mc_addr(mca, netdev) {
if (!i40e_find_mac(vsi, mca->addr, false, true)) {
if (i40e_is_vsi_in_vlan(vsi))
i40e_put_mac_in_vlan(vsi, mca->addr,
false, true);
else
i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
false, true);
}
}
/* remove filter if not in netdev list */
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
if (!f->is_netdev)
continue;
netdev_for_each_mc_addr(mca, netdev)
if (ether_addr_equal(mca->addr, f->macaddr))
goto bottom_of_search_loop;
netdev_for_each_uc_addr(uca, netdev)
if (ether_addr_equal(uca->addr, f->macaddr))
goto bottom_of_search_loop;
for_each_dev_addr(netdev, ha)
if (ether_addr_equal(ha->addr, f->macaddr))
goto bottom_of_search_loop;
/* f->macaddr wasn't found in uc, mc, or ha list so delete it */
i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
bottom_of_search_loop:
continue;
}
spin_unlock_bh(&vsi->mac_filter_list_lock);
/* check for other flag changes */
if (vsi->current_netdev_flags != vsi->netdev->flags) {
vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
}
/* schedule our worker thread which will take care of
* applying the new filter changes
*/
i40e_service_event_schedule(vsi->back);
}
/**
* i40e_mac_filter_entry_clone - Clones a MAC filter entry
* @src: source MAC filter entry to be clones
*
* Returns the pointer to newly cloned MAC filter entry or NULL
* in case of error
**/
static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
struct i40e_mac_filter *src)
{
struct i40e_mac_filter *f;
f = kzalloc(sizeof(*f), GFP_ATOMIC);
if (!f)
return NULL;
*f = *src;
INIT_LIST_HEAD(&f->list);
return f;
}
/**
* i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
* @vsi: pointer to vsi struct
* @from: Pointer to list which contains MAC filter entries - changes to
* those entries needs to be undone.
*
* MAC filter entries from list were slated to be removed from device.
**/
static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
struct list_head *from)
{
struct i40e_mac_filter *f, *ftmp;
list_for_each_entry_safe(f, ftmp, from, list) {
f->changed = true;
/* Move the element back into MAC filter list*/
list_move_tail(&f->list, &vsi->mac_filter_list);
}
}
/**
* i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
* @vsi: pointer to vsi struct
*
* MAC filter entries from list were slated to be added from device.
**/
static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
{
struct i40e_mac_filter *f, *ftmp;
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
if (!f->changed && f->counter)
f->changed = true;
}
}
/**
* i40e_cleanup_add_list - Deletes the element from add list and release
* memory
* @add_list: Pointer to list which contains MAC filter entries
**/
static void i40e_cleanup_add_list(struct list_head *add_list)
{
struct i40e_mac_filter *f, *ftmp;
list_for_each_entry_safe(f, ftmp, add_list, list) {
list_del(&f->list);
kfree(f);
}
}
/**
* i40e_sync_vsi_filters - Update the VSI filter list to the HW
* @vsi: ptr to the VSI
*
* Push any outstanding VSI filter changes through the AdminQ.
*
* Returns 0 or error value
**/
int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
{
struct list_head tmp_del_list, tmp_add_list;
struct i40e_mac_filter *f, *ftmp, *fclone;
bool promisc_forced_on = false;
bool add_happened = false;
int filter_list_len = 0;
u32 changed_flags = 0;
i40e_status aq_ret = 0;
bool err_cond = false;
int retval = 0;
struct i40e_pf *pf;
int num_add = 0;
int num_del = 0;
int aq_err = 0;
u16 cmd_flags;
/* empty array typed pointers, kcalloc later */
struct i40e_aqc_add_macvlan_element_data *add_list;
struct i40e_aqc_remove_macvlan_element_data *del_list;
while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
usleep_range(1000, 2000);
pf = vsi->back;
if (vsi->netdev) {
changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
vsi->current_netdev_flags = vsi->netdev->flags;
}
INIT_LIST_HEAD(&tmp_del_list);
INIT_LIST_HEAD(&tmp_add_list);
if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
spin_lock_bh(&vsi->mac_filter_list_lock);
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
if (!f->changed)
continue;
if (f->counter != 0)
continue;
f->changed = false;
/* Move the element into temporary del_list */
list_move_tail(&f->list, &tmp_del_list);
}
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
if (!f->changed)
continue;
if (f->counter == 0)
continue;
f->changed = false;
/* Clone MAC filter entry and add into temporary list */
fclone = i40e_mac_filter_entry_clone(f);
if (!fclone) {
err_cond = true;
break;
}
list_add_tail(&fclone->list, &tmp_add_list);
}
/* if failed to clone MAC filter entry - undo */
if (err_cond) {
i40e_undo_del_filter_entries(vsi, &tmp_del_list);
i40e_undo_add_filter_entries(vsi);
}
spin_unlock_bh(&vsi->mac_filter_list_lock);
if (err_cond) {
i40e_cleanup_add_list(&tmp_add_list);
retval = -ENOMEM;
goto out;
}
}
/* Now process 'del_list' outside the lock */
if (!list_empty(&tmp_del_list)) {
int del_list_size;
filter_list_len = pf->hw.aq.asq_buf_size /
sizeof(struct i40e_aqc_remove_macvlan_element_data);
del_list_size = filter_list_len *
sizeof(struct i40e_aqc_remove_macvlan_element_data);
del_list = kzalloc(del_list_size, GFP_ATOMIC);
if (!del_list) {
i40e_cleanup_add_list(&tmp_add_list);
/* Undo VSI's MAC filter entry element updates */
spin_lock_bh(&vsi->mac_filter_list_lock);
i40e_undo_del_filter_entries(vsi, &tmp_del_list);
i40e_undo_add_filter_entries(vsi);
spin_unlock_bh(&vsi->mac_filter_list_lock);
retval = -ENOMEM;
goto out;
}
list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
cmd_flags = 0;
/* add to delete list */
ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
del_list[num_del].vlan_tag =
cpu_to_le16((u16)(f->vlan ==
I40E_VLAN_ANY ? 0 : f->vlan));
cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
del_list[num_del].flags = cmd_flags;
num_del++;
/* flush a full buffer */
if (num_del == filter_list_len) {
aq_ret = i40e_aq_remove_macvlan(&pf->hw,
vsi->seid,
del_list,
num_del,
NULL);
aq_err = pf->hw.aq.asq_last_status;
num_del = 0;
memset(del_list, 0, del_list_size);
if (aq_ret && aq_err != I40E_AQ_RC_ENOENT) {
retval = -EIO;
dev_err(&pf->pdev->dev,
"ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
i40e_stat_str(&pf->hw, aq_ret),
i40e_aq_str(&pf->hw, aq_err));
}
}
/* Release memory for MAC filter entries which were
* synced up with HW.
*/
list_del(&f->list);
kfree(f);
}
if (num_del) {
aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
del_list, num_del,
NULL);
aq_err = pf->hw.aq.asq_last_status;
num_del = 0;
if (aq_ret && aq_err != I40E_AQ_RC_ENOENT)
dev_info(&pf->pdev->dev,
"ignoring delete macvlan error, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, aq_ret),
i40e_aq_str(&pf->hw, aq_err));
}
kfree(del_list);
del_list = NULL;
}
if (!list_empty(&tmp_add_list)) {
int add_list_size;
/* do all the adds now */
filter_list_len = pf->hw.aq.asq_buf_size /
sizeof(struct i40e_aqc_add_macvlan_element_data),
add_list_size = filter_list_len *
sizeof(struct i40e_aqc_add_macvlan_element_data);
add_list = kzalloc(add_list_size, GFP_ATOMIC);
if (!add_list) {
/* Purge element from temporary lists */
i40e_cleanup_add_list(&tmp_add_list);
/* Undo add filter entries from VSI MAC filter list */
spin_lock_bh(&vsi->mac_filter_list_lock);
i40e_undo_add_filter_entries(vsi);
spin_unlock_bh(&vsi->mac_filter_list_lock);
retval = -ENOMEM;
goto out;
}
list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
add_happened = true;
cmd_flags = 0;
/* add to add array */
ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
add_list[num_add].vlan_tag =
cpu_to_le16(
(u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
add_list[num_add].queue_number = 0;
cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
add_list[num_add].flags = cpu_to_le16(cmd_flags);
num_add++;
/* flush a full buffer */
if (num_add == filter_list_len) {
aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
add_list, num_add,
NULL);
aq_err = pf->hw.aq.asq_last_status;
num_add = 0;
if (aq_ret)
break;
memset(add_list, 0, add_list_size);
}
/* Entries from tmp_add_list were cloned from MAC
* filter list, hence clean those cloned entries
*/
list_del(&f->list);
kfree(f);
}
if (num_add) {
aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
add_list, num_add, NULL);
aq_err = pf->hw.aq.asq_last_status;
num_add = 0;
}
kfree(add_list);
add_list = NULL;
if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
dev_info(&pf->pdev->dev,
"add filter failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, aq_ret),
i40e_aq_str(&pf->hw, aq_err));
if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
!test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
&vsi->state)) {
promisc_forced_on = true;
set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
&vsi->state);
dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
}
}
}
/* check for changes in promiscuous modes */
if (changed_flags & IFF_ALLMULTI) {
bool cur_multipromisc;
cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
vsi->seid,
cur_multipromisc,
NULL);
if (aq_ret) {
retval = i40e_aq_rc_to_posix(aq_ret,
pf->hw.aq.asq_last_status);
dev_info(&pf->pdev->dev,
"set multi promisc failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, aq_ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
}
}
if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
bool cur_promisc;
cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
&vsi->state));
if ((vsi->type == I40E_VSI_MAIN) &&
(pf->lan_veb != I40E_NO_VEB) &&
!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
/* set defport ON for Main VSI instead of true promisc
* this way we will get all unicast/multicast and VLAN
* promisc behavior but will not get VF or VMDq traffic
* replicated on the Main VSI.
*/
if (pf->cur_promisc != cur_promisc) {
pf->cur_promisc = cur_promisc;
set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
}
} else {
aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
&vsi->back->hw,
vsi->seid,
cur_promisc, NULL);
if (aq_ret) {
retval =
i40e_aq_rc_to_posix(aq_ret,
pf->hw.aq.asq_last_status);
dev_info(&pf->pdev->dev,
"set unicast promisc failed, err %d, aq_err %d\n",
aq_ret, pf->hw.aq.asq_last_status);
}
aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
&vsi->back->hw,
vsi->seid,
cur_promisc, NULL);
if (aq_ret) {
retval =
i40e_aq_rc_to_posix(aq_ret,
pf->hw.aq.asq_last_status);
dev_info(&pf->pdev->dev,
"set multicast promisc failed, err %d, aq_err %d\n",
aq_ret, pf->hw.aq.asq_last_status);
}
}
aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
vsi->seid,
cur_promisc, NULL);
if (aq_ret) {
retval = i40e_aq_rc_to_posix(aq_ret,
pf->hw.aq.asq_last_status);
dev_info(&pf->pdev->dev,
"set brdcast promisc failed, err %s, aq_err %s\n",
i40e_stat_str(&pf->hw, aq_ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
}
}
out:
/* if something went wrong then set the changed flag so we try again */
if (retval)
vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
return retval;
}
/**
* i40e_sync_filters_subtask - Sync the VSI filter list with HW
* @pf: board private structure
**/
static void i40e_sync_filters_subtask(struct i40e_pf *pf)
{
int v;
if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
return;
pf->flags &= ~I40E_FLAG_FILTER_SYNC;
for (v = 0; v < pf->num_alloc_vsi; v++) {
if (pf->vsi[v] &&
(pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
int ret = i40e_sync_vsi_filters(pf->vsi[v]);
if (ret) {
/* come back and try again later */
pf->flags |= I40E_FLAG_FILTER_SYNC;
break;
}
}
}
}
/**
* i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
* @netdev: network interface device structure
* @new_mtu: new value for maximum frame size
*
* Returns 0 on success, negative on failure
**/
static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
struct i40e_vsi *vsi = np->vsi;
/* MTU < 68 is an error and causes problems on some kernels */
if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
return -EINVAL;
netdev_info(netdev, "changing MTU from %d to %d\n",
netdev->mtu, new_mtu);
netdev->mtu = new_mtu;
if (netif_running(netdev))
i40e_vsi_reinit_locked(vsi);
i40e_notify_client_of_l2_param_changes(vsi);
return 0;
}
/**
* i40e_ioctl - Access the hwtstamp interface
* @netdev: network interface device structure
* @ifr: interface request data
* @cmd: ioctl command
**/
int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
switch (cmd) {
case SIOCGHWTSTAMP:
return i40e_ptp_get_ts_config(pf, ifr);
case SIOCSHWTSTAMP:
return i40e_ptp_set_ts_config(pf, ifr);
default:
return -EOPNOTSUPP;
}
}
/**
* i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
* @vsi: the vsi being adjusted
**/
void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
{
struct i40e_vsi_context ctxt;
i40e_status ret;
if ((vsi->info.valid_sections &
cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
return; /* already enabled */
vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
ctxt.seid = vsi->seid;
ctxt.info = vsi->info;
ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"update vlan stripping failed, err %s aq_err %s\n",
i40e_stat_str(&vsi->back->hw, ret),
i40e_aq_str(&vsi->back->hw,
vsi->back->hw.aq.asq_last_status));
}
}
/**
* i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
* @vsi: the vsi being adjusted
**/
void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
{
struct i40e_vsi_context ctxt;
i40e_status ret;
if ((vsi->info.valid_sections &
cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
I40E_AQ_VSI_PVLAN_EMOD_MASK))
return; /* already disabled */
vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
ctxt.seid = vsi->seid;
ctxt.info = vsi->info;
ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"update vlan stripping failed, err %s aq_err %s\n",
i40e_stat_str(&vsi->back->hw, ret),
i40e_aq_str(&vsi->back->hw,
vsi->back->hw.aq.asq_last_status));
}
}
/**
* i40e_vlan_rx_register - Setup or shutdown vlan offload
* @netdev: network interface to be adjusted
* @features: netdev features to test if VLAN offload is enabled or not
**/
static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
if (features & NETIF_F_HW_VLAN_CTAG_RX)
i40e_vlan_stripping_enable(vsi);
else
i40e_vlan_stripping_disable(vsi);
}
/**
* i40e_vsi_add_vlan - Add vsi membership for given vlan
* @vsi: the vsi being configured
* @vid: vlan id to be added (0 = untagged only , -1 = any)
**/
int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
{
struct i40e_mac_filter *f, *add_f;
bool is_netdev, is_vf;
is_vf = (vsi->type == I40E_VSI_SRIOV);
is_netdev = !!(vsi->netdev);
/* Locked once because all functions invoked below iterates list*/
spin_lock_bh(&vsi->mac_filter_list_lock);
if (is_netdev) {
add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
is_vf, is_netdev);
if (!add_f) {
dev_info(&vsi->back->pdev->dev,
"Could not add vlan filter %d for %pM\n",
vid, vsi->netdev->dev_addr);
spin_unlock_bh(&vsi->mac_filter_list_lock);
return -ENOMEM;
}
}
list_for_each_entry(f, &vsi->mac_filter_list, list) {
add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
if (!add_f) {
dev_info(&vsi->back->pdev->dev,
"Could not add vlan filter %d for %pM\n",
vid, f->macaddr);
spin_unlock_bh(&vsi->mac_filter_list_lock);
return -ENOMEM;
}
}
/* Now if we add a vlan tag, make sure to check if it is the first
* tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
* with 0, so we now accept untagged and specified tagged traffic
* (and not any taged and untagged)
*/
if (vid > 0) {
if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
I40E_VLAN_ANY,
is_vf, is_netdev)) {
i40e_del_filter(vsi, vsi->netdev->dev_addr,
I40E_VLAN_ANY, is_vf, is_netdev);
add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
is_vf, is_netdev);
if (!add_f) {
dev_info(&vsi->back->pdev->dev,
"Could not add filter 0 for %pM\n",
vsi->netdev->dev_addr);
spin_unlock_bh(&vsi->mac_filter_list_lock);
return -ENOMEM;
}
}
}
/* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
if (vid > 0 && !vsi->info.pvid) {
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
is_vf, is_netdev))
continue;
i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
is_vf, is_netdev);
add_f = i40e_add_filter(vsi, f->macaddr,
0, is_vf, is_netdev);
if (!add_f) {
dev_info(&vsi->back->pdev->dev,
"Could not add filter 0 for %pM\n",
f->macaddr);
spin_unlock_bh(&vsi->mac_filter_list_lock);
return -ENOMEM;
}
}
}
spin_unlock_bh(&vsi->mac_filter_list_lock);
/* schedule our worker thread which will take care of
* applying the new filter changes
*/
i40e_service_event_schedule(vsi->back);
return 0;
}
/**
* i40e_vsi_kill_vlan - Remove vsi membership for given vlan
* @vsi: the vsi being configured
* @vid: vlan id to be removed (0 = untagged only , -1 = any)
*
* Return: 0 on success or negative otherwise
**/
int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
{
struct net_device *netdev = vsi->netdev;
struct i40e_mac_filter *f, *add_f;
bool is_vf, is_netdev;
int filter_count = 0;
is_vf = (vsi->type == I40E_VSI_SRIOV);
is_netdev = !!(netdev);
/* Locked once because all functions invoked below iterates list */
spin_lock_bh(&vsi->mac_filter_list_lock);
if (is_netdev)
i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
list_for_each_entry(f, &vsi->mac_filter_list, list)
i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
/* go through all the filters for this VSI and if there is only
* vid == 0 it means there are no other filters, so vid 0 must
* be replaced with -1. This signifies that we should from now
* on accept any traffic (with any tag present, or untagged)
*/
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if (is_netdev) {
if (f->vlan &&
ether_addr_equal(netdev->dev_addr, f->macaddr))
filter_count++;
}
if (f->vlan)
filter_count++;
}
if (!filter_count && is_netdev) {
i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
is_vf, is_netdev);
if (!f) {
dev_info(&vsi->back->pdev->dev,
"Could not add filter %d for %pM\n",
I40E_VLAN_ANY, netdev->dev_addr);
spin_unlock_bh(&vsi->mac_filter_list_lock);
return -ENOMEM;
}
}
if (!filter_count) {
list_for_each_entry(f, &vsi->mac_filter_list, list) {
i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
is_vf, is_netdev);
if (!add_f) {
dev_info(&vsi->back->pdev->dev,
"Could not add filter %d for %pM\n",
I40E_VLAN_ANY, f->macaddr);
spin_unlock_bh(&vsi->mac_filter_list_lock);
return -ENOMEM;
}
}
}
spin_unlock_bh(&vsi->mac_filter_list_lock);
/* schedule our worker thread which will take care of
* applying the new filter changes
*/
i40e_service_event_schedule(vsi->back);
return 0;
}
/**
* i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
* @netdev: network interface to be adjusted
* @vid: vlan id to be added
*
* net_device_ops implementation for adding vlan ids
**/
#ifdef I40E_FCOE
int i40e_vlan_rx_add_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
#else
static int i40e_vlan_rx_add_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
#endif
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
int ret = 0;
if (vid > 4095)
return -EINVAL;
netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
/* If the network stack called us with vid = 0 then
* it is asking to receive priority tagged packets with
* vlan id 0. Our HW receives them by default when configured
* to receive untagged packets so there is no need to add an
* extra filter for vlan 0 tagged packets.
*/
if (vid)
ret = i40e_vsi_add_vlan(vsi, vid);
if (!ret && (vid < VLAN_N_VID))
set_bit(vid, vsi->active_vlans);
return ret;
}
/**
* i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
* @netdev: network interface to be adjusted
* @vid: vlan id to be removed
*
* net_device_ops implementation for removing vlan ids
**/
#ifdef I40E_FCOE
int i40e_vlan_rx_kill_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
#else
static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
#endif
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
/* return code is ignored as there is nothing a user
* can do about failure to remove and a log message was
* already printed from the other function
*/
i40e_vsi_kill_vlan(vsi, vid);
clear_bit(vid, vsi->active_vlans);
return 0;
}
/**
* i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
* @vsi: the vsi being brought back up
**/
static void i40e_restore_vlan(struct i40e_vsi *vsi)
{
u16 vid;
if (!vsi->netdev)
return;
i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
vid);
}
/**
* i40e_vsi_add_pvid - Add pvid for the VSI
* @vsi: the vsi being adjusted
* @vid: the vlan id to set as a PVID
**/
int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
{
struct i40e_vsi_context ctxt;
i40e_status ret;
vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
vsi->info.pvid = cpu_to_le16(vid);
vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
I40E_AQ_VSI_PVLAN_INSERT_PVID |
I40E_AQ_VSI_PVLAN_EMOD_STR;
ctxt.seid = vsi->seid;
ctxt.info = vsi->info;
ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"add pvid failed, err %s aq_err %s\n",
i40e_stat_str(&vsi->back->hw, ret),
i40e_aq_str(&vsi->back->hw,
vsi->back->hw.aq.asq_last_status));
return -ENOENT;
}
return 0;
}
/**
* i40e_vsi_remove_pvid - Remove the pvid from the VSI
* @vsi: the vsi being adjusted
*
* Just use the vlan_rx_register() service to put it back to normal
**/
void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
{
i40e_vlan_stripping_disable(vsi);
vsi->info.pvid = 0;
}
/**
* i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
* @vsi: ptr to the VSI
*
* If this function returns with an error, then it's possible one or
* more of the rings is populated (while the rest are not). It is the
* callers duty to clean those orphaned rings.
*
* Return 0 on success, negative on failure
**/
static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
{
int i, err = 0;
for (i = 0; i < vsi->num_queue_pairs && !err; i++)
err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
return err;
}
/**
* i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
* @vsi: ptr to the VSI
*
* Free VSI's transmit software resources
**/
static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
{
int i;
if (!vsi->tx_rings)
return;
for (i = 0; i < vsi->num_queue_pairs; i++)
if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
i40e_free_tx_resources(vsi->tx_rings[i]);
}
/**
* i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
* @vsi: ptr to the VSI
*
* If this function returns with an error, then it's possible one or
* more of the rings is populated (while the rest are not). It is the
* callers duty to clean those orphaned rings.
*
* Return 0 on success, negative on failure
**/
static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
{
int i, err = 0;
for (i = 0; i < vsi->num_queue_pairs && !err; i++)
err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
#ifdef I40E_FCOE
i40e_fcoe_setup_ddp_resources(vsi);
#endif
return err;
}
/**
* i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
* @vsi: ptr to the VSI
*
* Free all receive software resources
**/
static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
{
int i;
if (!vsi->rx_rings)
return;
for (i = 0; i < vsi->num_queue_pairs; i++)
if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
i40e_free_rx_resources(vsi->rx_rings[i]);
#ifdef I40E_FCOE
i40e_fcoe_free_ddp_resources(vsi);
#endif
}
/**
* i40e_config_xps_tx_ring - Configure XPS for a Tx ring
* @ring: The Tx ring to configure
*
* This enables/disables XPS for a given Tx descriptor ring
* based on the TCs enabled for the VSI that ring belongs to.
**/
static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
{
struct i40e_vsi *vsi = ring->vsi;
cpumask_var_t mask;
if (!ring->q_vector || !ring->netdev)
return;
/* Single TC mode enable XPS */
if (vsi->tc_config.numtc <= 1) {
if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
netif_set_xps_queue(ring->netdev,
&ring->q_vector->affinity_mask,
ring->queue_index);
} else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
/* Disable XPS to allow selection based on TC */
bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
free_cpumask_var(mask);
}
/* schedule our worker thread which will take care of
* applying the new filter changes
*/
i40e_service_event_schedule(vsi->back);
}
/**
* i40e_configure_tx_ring - Configure a transmit ring context and rest
* @ring: The Tx ring to configure
*
* Configure the Tx descriptor ring in the HMC context.
**/
static int i40e_configure_tx_ring(struct i40e_ring *ring)
{
struct i40e_vsi *vsi = ring->vsi;
u16 pf_q = vsi->base_queue + ring->queue_index;
struct i40e_hw *hw = &vsi->back->hw;
struct i40e_hmc_obj_txq tx_ctx;
i40e_status err = 0;
u32 qtx_ctl = 0;
/* some ATR related tx ring init */
if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
ring->atr_sample_rate = vsi->back->atr_sample_rate;
ring->atr_count = 0;
} else {
ring->atr_sample_rate = 0;
}
/* configure XPS */
i40e_config_xps_tx_ring(ring);
/* clear the context structure first */
memset(&tx_ctx, 0, sizeof(tx_ctx));
tx_ctx.new_context = 1;
tx_ctx.base = (ring->dma / 128);
tx_ctx.qlen = ring->count;
tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
I40E_FLAG_FD_ATR_ENABLED));
#ifdef I40E_FCOE
tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
#endif
tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
/* FDIR VSI tx ring can still use RS bit and writebacks */
if (vsi->type != I40E_VSI_FDIR)
tx_ctx.head_wb_ena = 1;
tx_ctx.head_wb_addr = ring->dma +
(ring->count * sizeof(struct i40e_tx_desc));
/* As part of VSI creation/update, FW allocates certain
* Tx arbitration queue sets for each TC enabled for
* the VSI. The FW returns the handles to these queue
* sets as part of the response buffer to Add VSI,
* Update VSI, etc. AQ commands. It is expected that
* these queue set handles be associated with the Tx
* queues by the driver as part of the TX queue context
* initialization. This has to be done regardless of
* DCB as by default everything is mapped to TC0.
*/
tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
tx_ctx.rdylist_act = 0;
/* clear the context in the HMC */
err = i40e_clear_lan_tx_queue_context(hw, pf_q);
if (err) {
dev_info(&vsi->back->pdev->dev,
"Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
ring->queue_index, pf_q, err);
return -ENOMEM;
}
/* set the context in the HMC */
err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
if (err) {
dev_info(&vsi->back->pdev->dev,
"Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
ring->queue_index, pf_q, err);
return -ENOMEM;
}
/* Now associate this queue with this PCI function */
if (vsi->type == I40E_VSI_VMDQ2) {
qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
I40E_QTX_CTL_VFVM_INDX_MASK;
} else {
qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
}
qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
I40E_QTX_CTL_PF_INDX_MASK);
wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
i40e_flush(hw);
/* cache tail off for easier writes later */
ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
return 0;
}
/**
* i40e_configure_rx_ring - Configure a receive ring context
* @ring: The Rx ring to configure
*
* Configure the Rx descriptor ring in the HMC context.
**/
static int i40e_configure_rx_ring(struct i40e_ring *ring)
{
struct i40e_vsi *vsi = ring->vsi;
u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
u16 pf_q = vsi->base_queue + ring->queue_index;
struct i40e_hw *hw = &vsi->back->hw;
struct i40e_hmc_obj_rxq rx_ctx;
i40e_status err = 0;
ring->state = 0;
/* clear the context structure first */
memset(&rx_ctx, 0, sizeof(rx_ctx));
ring->rx_buf_len = vsi->rx_buf_len;
ring->rx_hdr_len = vsi->rx_hdr_len;
rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
rx_ctx.base = (ring->dma / 128);
rx_ctx.qlen = ring->count;
if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
set_ring_16byte_desc_enabled(ring);
rx_ctx.dsize = 0;
} else {
rx_ctx.dsize = 1;
}
rx_ctx.dtype = vsi->dtype;
if (vsi->dtype) {
set_ring_ps_enabled(ring);
rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
I40E_RX_SPLIT_IP |
I40E_RX_SPLIT_TCP_UDP |
I40E_RX_SPLIT_SCTP;
} else {
rx_ctx.hsplit_0 = 0;
}
rx_ctx.rxmax = min_t(u16, vsi->max_frame,
(chain_len * ring->rx_buf_len));
if (hw->revision_id == 0)
rx_ctx.lrxqthresh = 0;
else
rx_ctx.lrxqthresh = 2;
rx_ctx.crcstrip = 1;
rx_ctx.l2tsel = 1;
/* this controls whether VLAN is stripped from inner headers */
rx_ctx.showiv = 0;
#ifdef I40E_FCOE
rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
#endif
/* set the prefena field to 1 because the manual says to */
rx_ctx.prefena = 1;
/* clear the context in the HMC */
err = i40e_clear_lan_rx_queue_context(hw, pf_q);
if (err) {
dev_info(&vsi->back->pdev->dev,
"Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
ring->queue_index, pf_q, err);
return -ENOMEM;
}
/* set the context in the HMC */
err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
if (err) {
dev_info(&vsi->back->pdev->dev,
"Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
ring->queue_index, pf_q, err);
return -ENOMEM;
}
/* cache tail for quicker writes, and clear the reg before use */
ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
writel(0, ring->tail);
if (ring_is_ps_enabled(ring)) {
i40e_alloc_rx_headers(ring);
i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
} else {
i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
}
return 0;
}
/**
* i40e_vsi_configure_tx - Configure the VSI for Tx
* @vsi: VSI structure describing this set of rings and resources
*
* Configure the Tx VSI for operation.
**/
static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
{
int err = 0;
u16 i;
for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
err = i40e_configure_tx_ring(vsi->tx_rings[i]);
return err;
}
/**
* i40e_vsi_configure_rx - Configure the VSI for Rx
* @vsi: the VSI being configured
*
* Configure the Rx VSI for operation.
**/
static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
{
int err = 0;
u16 i;
if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
+ ETH_FCS_LEN + VLAN_HLEN;
else
vsi->max_frame = I40E_RXBUFFER_2048;
/* figure out correct receive buffer length */
switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
I40E_FLAG_RX_PS_ENABLED)) {
case I40E_FLAG_RX_1BUF_ENABLED:
vsi->rx_hdr_len = 0;
vsi->rx_buf_len = vsi->max_frame;
vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
break;
case I40E_FLAG_RX_PS_ENABLED:
vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
vsi->rx_buf_len = I40E_RXBUFFER_2048;
vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
break;
default:
vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
vsi->rx_buf_len = I40E_RXBUFFER_2048;
vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
break;
}
#ifdef I40E_FCOE
/* setup rx buffer for FCoE */
if ((vsi->type == I40E_VSI_FCOE) &&
(vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
vsi->rx_hdr_len = 0;
vsi->rx_buf_len = I40E_RXBUFFER_3072;
vsi->max_frame = I40E_RXBUFFER_3072;
vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
}
#endif /* I40E_FCOE */
/* round up for the chip's needs */
vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
/* set up individual rings */
for (i = 0; i < vsi->num_queue_pairs && !err; i++)
err = i40e_configure_rx_ring(vsi->rx_rings[i]);
return err;
}
/**
* i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
* @vsi: ptr to the VSI
**/
static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
{
struct i40e_ring *tx_ring, *rx_ring;
u16 qoffset, qcount;
int i, n;
if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
/* Reset the TC information */
for (i = 0; i < vsi->num_queue_pairs; i++) {
rx_ring = vsi->rx_rings[i];
tx_ring = vsi->tx_rings[i];
rx_ring->dcb_tc = 0;
tx_ring->dcb_tc = 0;
}
}
for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
continue;
qoffset = vsi->tc_config.tc_info[n].qoffset;
qcount = vsi->tc_config.tc_info[n].qcount;
for (i = qoffset; i < (qoffset + qcount); i++) {
rx_ring = vsi->rx_rings[i];
tx_ring = vsi->tx_rings[i];
rx_ring->dcb_tc = n;
tx_ring->dcb_tc = n;
}
}
}
/**
* i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
* @vsi: ptr to the VSI
**/
static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
{
if (vsi->netdev)
i40e_set_rx_mode(vsi->netdev);
}
/**
* i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
* @vsi: Pointer to the targeted VSI
*
* This function replays the hlist on the hw where all the SB Flow Director
* filters were saved.
**/
static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
{
struct i40e_fdir_filter *filter;
struct i40e_pf *pf = vsi->back;
struct hlist_node *node;
if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
return;
hlist_for_each_entry_safe(filter, node,
&pf->fdir_filter_list, fdir_node) {
i40e_add_del_fdir(vsi, filter, true);
}
}
/**
* i40e_vsi_configure - Set up the VSI for action
* @vsi: the VSI being configured
**/
static int i40e_vsi_configure(struct i40e_vsi *vsi)
{
int err;
i40e_set_vsi_rx_mode(vsi);
i40e_restore_vlan(vsi);
i40e_vsi_config_dcb_rings(vsi);
err = i40e_vsi_configure_tx(vsi);
if (!err)
err = i40e_vsi_configure_rx(vsi);
return err;
}
/**
* i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
* @vsi: the VSI being configured
**/
static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
u16 vector;
int i, q;
u32 qp;
/* The interrupt indexing is offset by 1 in the PFINT_ITRn
* and PFINT_LNKLSTn registers, e.g.:
* PFINT_ITRn[0..n-1] gets msix-1..msix-n (qpair interrupts)
*/
qp = vsi->base_queue;
vector = vsi->base_vector;
for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
struct i40e_q_vector *q_vector = vsi->q_vectors[i];
q_vector->itr_countdown = ITR_COUNTDOWN_START;
q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
q_vector->rx.latency_range = I40E_LOW_LATENCY;
wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
q_vector->rx.itr);
q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
q_vector->tx.latency_range = I40E_LOW_LATENCY;
wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
q_vector->tx.itr);
wr32(hw, I40E_PFINT_RATEN(vector - 1),
INTRL_USEC_TO_REG(vsi->int_rate_limit));
/* Linked list for the queuepairs assigned to this vector */
wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
for (q = 0; q < q_vector->num_ringpairs; q++) {
u32 val;
val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
(I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
(vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
(qp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
(I40E_QUEUE_TYPE_TX
<< I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
wr32(hw, I40E_QINT_RQCTL(qp), val);
val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
(I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
(vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
((qp+1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
(I40E_QUEUE_TYPE_RX
<< I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
/* Terminate the linked list */
if (q == (q_vector->num_ringpairs - 1))
val |= (I40E_QUEUE_END_OF_LIST
<< I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
wr32(hw, I40E_QINT_TQCTL(qp), val);
qp++;
}
}
i40e_flush(hw);
}
/**
* i40e_enable_misc_int_causes - enable the non-queue interrupts
* @hw: ptr to the hardware info
**/
static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
u32 val;
/* clear things first */
wr32(hw, I40E_PFINT_ICR0_ENA, 0); /* disable all */
rd32(hw, I40E_PFINT_ICR0); /* read to clear */
val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK |
I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK |
I40E_PFINT_ICR0_ENA_GRST_MASK |
I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
I40E_PFINT_ICR0_ENA_GPIO_MASK |
I40E_PFINT_ICR0_ENA_HMC_ERR_MASK |
I40E_PFINT_ICR0_ENA_VFLR_MASK |
I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
if (pf->flags & I40E_FLAG_IWARP_ENABLED)
val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
if (pf->flags & I40E_FLAG_PTP)
val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
wr32(hw, I40E_PFINT_ICR0_ENA, val);
/* SW_ITR_IDX = 0, but don't change INTENA */
wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
/* OTHER_ITR_IDX = 0 */
wr32(hw, I40E_PFINT_STAT_CTL0, 0);
}
/**
* i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
* @vsi: the VSI being configured
**/
static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
{
struct i40e_q_vector *q_vector = vsi->q_vectors[0];
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
u32 val;
/* set the ITR configuration */
q_vector->itr_countdown = ITR_COUNTDOWN_START;
q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
q_vector->rx.latency_range = I40E_LOW_LATENCY;
wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
q_vector->tx.latency_range = I40E_LOW_LATENCY;
wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
i40e_enable_misc_int_causes(pf);
/* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
wr32(hw, I40E_PFINT_LNKLST0, 0);
/* Associate the queue pair to the vector and enable the queue int */
val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
(I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
(I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
wr32(hw, I40E_QINT_RQCTL(0), val);
val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
(I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
(I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
wr32(hw, I40E_QINT_TQCTL(0), val);
i40e_flush(hw);
}
/**
* i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
* @pf: board private structure
**/
void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
wr32(hw, I40E_PFINT_DYN_CTL0,
I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
i40e_flush(hw);
}
/**
* i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
* @pf: board private structure
* @clearpba: true when all pending interrupt events should be cleared
**/
void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
{
struct i40e_hw *hw = &pf->hw;
u32 val;
val = I40E_PFINT_DYN_CTL0_INTENA_MASK |
(clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
(I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
wr32(hw, I40E_PFINT_DYN_CTL0, val);
i40e_flush(hw);
}
/**
* i40e_msix_clean_rings - MSIX mode Interrupt Handler
* @irq: interrupt number
* @data: pointer to a q_vector
**/
static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
{
struct i40e_q_vector *q_vector = data;
if (!q_vector->tx.ring && !q_vector->rx.ring)
return IRQ_HANDLED;
napi_schedule_irqoff(&q_vector->napi);
return IRQ_HANDLED;
}
/**
* i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
* @vsi: the VSI being configured
* @basename: name for the vector
*
* Allocates MSI-X vectors and requests interrupts from the kernel.
**/
static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
{
int q_vectors = vsi->num_q_vectors;
struct i40e_pf *pf = vsi->back;
int base = vsi->base_vector;
int rx_int_idx = 0;
int tx_int_idx = 0;
int vector, err;
for (vector = 0; vector < q_vectors; vector++) {
struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
if (q_vector->tx.ring && q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "TxRx", rx_int_idx++);
tx_int_idx++;
} else if (q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "rx", rx_int_idx++);
} else if (q_vector->tx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "tx", tx_int_idx++);
} else {
/* skip this unused q_vector */
continue;
}
err = request_irq(pf->msix_entries[base + vector].vector,
vsi->irq_handler,
0,
q_vector->name,
q_vector);
if (err) {
dev_info(&pf->pdev->dev,
"MSIX request_irq failed, error: %d\n", err);
goto free_queue_irqs;
}
/* assign the mask for this irq */
irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
&q_vector->affinity_mask);
}
vsi->irqs_ready = true;
return 0;
free_queue_irqs:
while (vector) {
vector--;
irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
NULL);
free_irq(pf->msix_entries[base + vector].vector,
&(vsi->q_vectors[vector]));
}
return err;
}
/**
* i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
* @vsi: the VSI being un-configured
**/
static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
int base = vsi->base_vector;
int i;
for (i = 0; i < vsi->num_queue_pairs; i++) {
wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
}
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
for (i = vsi->base_vector;
i < (vsi->num_q_vectors + vsi->base_vector); i++)
wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
i40e_flush(hw);
for (i = 0; i < vsi->num_q_vectors; i++)
synchronize_irq(pf->msix_entries[i + base].vector);
} else {
/* Legacy and MSI mode - this stops all interrupt handling */
wr32(hw, I40E_PFINT_ICR0_ENA, 0);
wr32(hw, I40E_PFINT_DYN_CTL0, 0);
i40e_flush(hw);
synchronize_irq(pf->pdev->irq);
}
}
/**
* i40e_vsi_enable_irq - Enable IRQ for the given VSI
* @vsi: the VSI being configured
**/
static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
int i;
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
for (i = 0; i < vsi->num_q_vectors; i++)
i40e_irq_dynamic_enable(vsi, i);
} else {
i40e_irq_dynamic_enable_icr0(pf, true);
}
i40e_flush(&pf->hw);
return 0;
}
/**
* i40e_stop_misc_vector - Stop the vector that handles non-queue events
* @pf: board private structure
**/
static void i40e_stop_misc_vector(struct i40e_pf *pf)
{
/* Disable ICR 0 */
wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
i40e_flush(&pf->hw);
}
/**
* i40e_intr - MSI/Legacy and non-queue interrupt handler
* @irq: interrupt number
* @data: pointer to a q_vector
*
* This is the handler used for all MSI/Legacy interrupts, and deals
* with both queue and non-queue interrupts. This is also used in
* MSIX mode to handle the non-queue interrupts.
**/
static irqreturn_t i40e_intr(int irq, void *data)
{
struct i40e_pf *pf = (struct i40e_pf *)data;
struct i40e_hw *hw = &pf->hw;
irqreturn_t ret = IRQ_NONE;
u32 icr0, icr0_remaining;
u32 val, ena_mask;
icr0 = rd32(hw, I40E_PFINT_ICR0);
ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
/* if sharing a legacy IRQ, we might get called w/o an intr pending */
if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
goto enable_intr;
/* if interrupt but no bits showing, must be SWINT */
if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
(icr0 & I40E_PFINT_ICR0_SWINT_MASK))
pf->sw_int_count++;
if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
(ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
}
/* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
struct i40e_q_vector *q_vector = vsi->q_vectors[0];
/* We do not have a way to disarm Queue causes while leaving
* interrupt enabled for all other causes, ideally
* interrupt should be disabled while we are in NAPI but
* this is not a performance path and napi_schedule()
* can deal with rescheduling.
*/
if (!test_bit(__I40E_DOWN, &pf->state))
napi_schedule_irqoff(&q_vector->napi);
}
if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
}
if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
}
if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
}
if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
val = rd32(hw, I40E_GLGEN_RSTAT);
val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
>> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
if (val == I40E_RESET_CORER) {
pf->corer_count++;
} else if (val == I40E_RESET_GLOBR) {
pf->globr_count++;
} else if (val == I40E_RESET_EMPR) {
pf->empr_count++;
set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
}
}
if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
dev_info(&pf->pdev->dev, "HMC error interrupt\n");
dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
rd32(hw, I40E_PFHMC_ERRORINFO),
rd32(hw, I40E_PFHMC_ERRORDATA));
}
if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
i40e_ptp_tx_hwtstamp(pf);
}
}
/* If a critical error is pending we have no choice but to reset the
* device.
* Report and mask out any remaining unexpected interrupts.
*/
icr0_remaining = icr0 & ena_mask;
if (icr0_remaining) {
dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
icr0_remaining);
if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
(icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
(icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
dev_info(&pf->pdev->dev, "device will be reset\n");
set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
i40e_service_event_schedule(pf);
}
ena_mask &= ~icr0_remaining;
}
ret = IRQ_HANDLED;
enable_intr:
/* re-enable interrupt causes */
wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
if (!test_bit(__I40E_DOWN, &pf->state)) {
i40e_service_event_schedule(pf);
i40e_irq_dynamic_enable_icr0(pf, false);
}
return ret;
}
/**
* i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
* @tx_ring: tx ring to clean
* @budget: how many cleans we're allowed
*
* Returns true if there's any budget left (e.g. the clean is finished)
**/
static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
{
struct i40e_vsi *vsi = tx_ring->vsi;
u16 i = tx_ring->next_to_clean;
struct i40e_tx_buffer *tx_buf;
struct i40e_tx_desc *tx_desc;
tx_buf = &tx_ring->tx_bi[i];
tx_desc = I40E_TX_DESC(tx_ring, i);
i -= tx_ring->count;
do {
struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
/* if next_to_watch is not set then there is no work pending */
if (!eop_desc)
break;
/* prevent any other reads prior to eop_desc */
read_barrier_depends();
/* if the descriptor isn't done, no work yet to do */
if (!(eop_desc->cmd_type_offset_bsz &
cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
break;
/* clear next_to_watch to prevent false hangs */
tx_buf->next_to_watch = NULL;
tx_desc->buffer_addr = 0;
tx_desc->cmd_type_offset_bsz = 0;
/* move past filter desc */
tx_buf++;
tx_desc++;
i++;
if (unlikely(!i)) {
i -= tx_ring->count;
tx_buf = tx_ring->tx_bi;
tx_desc = I40E_TX_DESC(tx_ring, 0);
}
/* unmap skb header data */
dma_unmap_single(tx_ring->dev,
dma_unmap_addr(tx_buf, dma),
dma_unmap_len(tx_buf, len),
DMA_TO_DEVICE);
if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
kfree(tx_buf->raw_buf);
tx_buf->raw_buf = NULL;
tx_buf->tx_flags = 0;
tx_buf->next_to_watch = NULL;
dma_unmap_len_set(tx_buf, len, 0);
tx_desc->buffer_addr = 0;
tx_desc->cmd_type_offset_bsz = 0;
/* move us past the eop_desc for start of next FD desc */
tx_buf++;
tx_desc++;
i++;
if (unlikely(!i)) {
i -= tx_ring->count;
tx_buf = tx_ring->tx_bi;
tx_desc = I40E_TX_DESC(tx_ring, 0);
}
/* update budget accounting */
budget--;
} while (likely(budget));
i += tx_ring->count;
tx_ring->next_to_clean = i;
if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
return budget > 0;
}
/**
* i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
* @irq: interrupt number
* @data: pointer to a q_vector
**/
static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
{
struct i40e_q_vector *q_vector = data;
struct i40e_vsi *vsi;
if (!q_vector->tx.ring)
return IRQ_HANDLED;
vsi = q_vector->tx.ring->vsi;
i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
return IRQ_HANDLED;
}
/**
* i40e_map_vector_to_qp - Assigns the queue pair to the vector
* @vsi: the VSI being configured
* @v_idx: vector index
* @qp_idx: queue pair index
**/
static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
{
struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
tx_ring->q_vector = q_vector;
tx_ring->next = q_vector->tx.ring;
q_vector->tx.ring = tx_ring;
q_vector->tx.count++;
rx_ring->q_vector = q_vector;
rx_ring->next = q_vector->rx.ring;
q_vector->rx.ring = rx_ring;
q_vector->rx.count++;
}
/**
* i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
* @vsi: the VSI being configured
*
* This function maps descriptor rings to the queue-specific vectors
* we were allotted through the MSI-X enabling code. Ideally, we'd have
* one vector per queue pair, but on a constrained vector budget, we
* group the queue pairs as "efficiently" as possible.
**/
static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
{
int qp_remaining = vsi->num_queue_pairs;
int q_vectors = vsi->num_q_vectors;
int num_ringpairs;
int v_start = 0;
int qp_idx = 0;
/* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
* group them so there are multiple queues per vector.
* It is also important to go through all the vectors available to be
* sure that if we don't use all the vectors, that the remaining vectors
* are cleared. This is especially important when decreasing the
* number of queues in use.
*/
for (; v_start < q_vectors; v_start++) {
struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
q_vector->num_ringpairs = num_ringpairs;
q_vector->rx.count = 0;
q_vector->tx.count = 0;
q_vector->rx.ring = NULL;
q_vector->tx.ring = NULL;
while (num_ringpairs--) {
i40e_map_vector_to_qp(vsi, v_start, qp_idx);
qp_idx++;
qp_remaining--;
}
}
}
/**
* i40e_vsi_request_irq - Request IRQ from the OS
* @vsi: the VSI being configured
* @basename: name for the vector
**/
static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
{
struct i40e_pf *pf = vsi->back;
int err;
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
err = i40e_vsi_request_irq_msix(vsi, basename);
else if (pf->flags & I40E_FLAG_MSI_ENABLED)
err = request_irq(pf->pdev->irq, i40e_intr, 0,
pf->int_name, pf);
else
err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
pf->int_name, pf);
if (err)
dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
return err;
}
#ifdef CONFIG_NET_POLL_CONTROLLER
/**
* i40e_netpoll - A Polling 'interrupt' handler
* @netdev: network interface device structure
*
* This is used by netconsole to send skbs without having to re-enable
* interrupts. It's not called while the normal interrupt routine is executing.
**/
#ifdef I40E_FCOE
void i40e_netpoll(struct net_device *netdev)
#else
static void i40e_netpoll(struct net_device *netdev)
#endif
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
int i;
/* if interface is down do nothing */
if (test_bit(__I40E_DOWN, &vsi->state))
return;
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
for (i = 0; i < vsi->num_q_vectors; i++)
i40e_msix_clean_rings(0, vsi->q_vectors[i]);
} else {
i40e_intr(pf->pdev->irq, netdev);
}
}
#endif
/**
* i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
* @pf: the PF being configured
* @pf_q: the PF queue
* @enable: enable or disable state of the queue
*
* This routine will wait for the given Tx queue of the PF to reach the
* enabled or disabled state.
* Returns -ETIMEDOUT in case of failing to reach the requested state after
* multiple retries; else will return 0 in case of success.
**/
static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
{
int i;
u32 tx_reg;
for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
break;
usleep_range(10, 20);
}
if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
return -ETIMEDOUT;
return 0;
}
/**
* i40e_vsi_control_tx - Start or stop a VSI's rings
* @vsi: the VSI being configured
* @enable: start or stop the rings
**/
static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
int i, j, pf_q, ret = 0;
u32 tx_reg;
pf_q = vsi->base_queue;
for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
/* warn the TX unit of coming changes */
i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
if (!enable)
usleep_range(10, 20);
for (j = 0; j < 50; j++) {
tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
break;
usleep_range(1000, 2000);
}
/* Skip if the queue is already in the requested state */
if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
continue;
/* turn on/off the queue */
if (enable) {
wr32(hw, I40E_QTX_HEAD(pf_q), 0);
tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
} else {
tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
}
wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
/* No waiting for the Tx queue to disable */
if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
continue;
/* wait for the change to finish */
ret = i40e_pf_txq_wait(pf, pf_q, enable);
if (ret) {
dev_info(&pf->pdev->dev,
"VSI seid %d Tx ring %d %sable timeout\n",
vsi->seid, pf_q, (enable ? "en" : "dis"));
break;
}
}
if (hw->revision_id == 0)
mdelay(50);
return ret;
}
/**
* i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
* @pf: the PF being configured
* @pf_q: the PF queue
* @enable: enable or disable state of the queue
*
* This routine will wait for the given Rx queue of the PF to reach the
* enabled or disabled state.
* Returns -ETIMEDOUT in case of failing to reach the requested state after
* multiple retries; else will return 0 in case of success.
**/
static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
{
int i;
u32 rx_reg;
for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
break;
usleep_range(10, 20);
}
if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
return -ETIMEDOUT;
return 0;
}
/**
* i40e_vsi_control_rx - Start or stop a VSI's rings
* @vsi: the VSI being configured
* @enable: start or stop the rings
**/
static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
int i, j, pf_q, ret = 0;
u32 rx_reg;
pf_q = vsi->base_queue;
for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
for (j = 0; j < 50; j++) {
rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
break;
usleep_range(1000, 2000);
}
/* Skip if the queue is already in the requested state */
if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
continue;
/* turn on/off the queue */
if (enable)
rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
else
rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
/* No waiting for the Tx queue to disable */
if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
continue;
/* wait for the change to finish */
ret = i40e_pf_rxq_wait(pf, pf_q, enable);
if (ret) {
dev_info(&pf->pdev->dev,
"VSI seid %d Rx ring %d %sable timeout\n",
vsi->seid, pf_q, (enable ? "en" : "dis"));
break;
}
}
return ret;
}
/**
* i40e_vsi_control_rings - Start or stop a VSI's rings
* @vsi: the VSI being configured
* @enable: start or stop the rings
**/
int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
{
int ret = 0;
/* do rx first for enable and last for disable */
if (request) {
ret = i40e_vsi_control_rx(vsi, request);
if (ret)
return ret;
ret = i40e_vsi_control_tx(vsi, request);
} else {
/* Ignore return value, we need to shutdown whatever we can */
i40e_vsi_control_tx(vsi, request);
i40e_vsi_control_rx(vsi, request);
}
return ret;
}
/**
* i40e_vsi_free_irq - Free the irq association with the OS
* @vsi: the VSI being configured
**/
static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
int base = vsi->base_vector;
u32 val, qp;
int i;
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
if (!vsi->q_vectors)
return;
if (!vsi->irqs_ready)
return;
vsi->irqs_ready = false;
for (i = 0; i < vsi->num_q_vectors; i++) {
u16 vector = i + base;
/* free only the irqs that were actually requested */
if (!vsi->q_vectors[i] ||
!vsi->q_vectors[i]->num_ringpairs)
continue;
/* clear the affinity_mask in the IRQ descriptor */
irq_set_affinity_hint(pf->msix_entries[vector].vector,
NULL);
free_irq(pf->msix_entries[vector].vector,
vsi->q_vectors[i]);
/* Tear down the interrupt queue link list
*
* We know that they come in pairs and always
* the Rx first, then the Tx. To clear the
* link list, stick the EOL value into the
* next_q field of the registers.
*/
val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
>> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
val |= I40E_QUEUE_END_OF_LIST
<< I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
while (qp != I40E_QUEUE_END_OF_LIST) {
u32 next;
val = rd32(hw, I40E_QINT_RQCTL(qp));
val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK |
I40E_QINT_RQCTL_MSIX0_INDX_MASK |
I40E_QINT_RQCTL_CAUSE_ENA_MASK |
I40E_QINT_RQCTL_INTEVENT_MASK);
val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
wr32(hw, I40E_QINT_RQCTL(qp), val);
val = rd32(hw, I40E_QINT_TQCTL(qp));
next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
>> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK |
I40E_QINT_TQCTL_MSIX0_INDX_MASK |
I40E_QINT_TQCTL_CAUSE_ENA_MASK |
I40E_QINT_TQCTL_INTEVENT_MASK);
val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
wr32(hw, I40E_QINT_TQCTL(qp), val);
qp = next;
}
}
} else {
free_irq(pf->pdev->irq, pf);
val = rd32(hw, I40E_PFINT_LNKLST0);
qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
>> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
val |= I40E_QUEUE_END_OF_LIST
<< I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
wr32(hw, I40E_PFINT_LNKLST0, val);
val = rd32(hw, I40E_QINT_RQCTL(qp));
val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK |
I40E_QINT_RQCTL_MSIX0_INDX_MASK |
I40E_QINT_RQCTL_CAUSE_ENA_MASK |
I40E_QINT_RQCTL_INTEVENT_MASK);
val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
wr32(hw, I40E_QINT_RQCTL(qp), val);
val = rd32(hw, I40E_QINT_TQCTL(qp));
val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK |
I40E_QINT_TQCTL_MSIX0_INDX_MASK |
I40E_QINT_TQCTL_CAUSE_ENA_MASK |
I40E_QINT_TQCTL_INTEVENT_MASK);
val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
wr32(hw, I40E_QINT_TQCTL(qp), val);
}
}
/**
* i40e_free_q_vector - Free memory allocated for specific interrupt vector
* @vsi: the VSI being configured
* @v_idx: Index of vector to be freed
*
* This function frees the memory allocated to the q_vector. In addition if
* NAPI is enabled it will delete any references to the NAPI struct prior
* to freeing the q_vector.
**/
static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
{
struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
struct i40e_ring *ring;
if (!q_vector)
return;
/* disassociate q_vector from rings */
i40e_for_each_ring(ring, q_vector->tx)
ring->q_vector = NULL;
i40e_for_each_ring(ring, q_vector->rx)
ring->q_vector = NULL;
/* only VSI w/ an associated netdev is set up w/ NAPI */
if (vsi->netdev)
netif_napi_del(&q_vector->napi);
vsi->q_vectors[v_idx] = NULL;
kfree_rcu(q_vector, rcu);
}
/**
* i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
* @vsi: the VSI being un-configured
*
* This frees the memory allocated to the q_vectors and
* deletes references to the NAPI struct.
**/
static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
{
int v_idx;
for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
i40e_free_q_vector(vsi, v_idx);
}
/**
* i40e_reset_interrupt_capability - Disable interrupt setup in OS
* @pf: board private structure
**/
static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
{
/* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
pci_disable_msix(pf->pdev);
kfree(pf->msix_entries);
pf->msix_entries = NULL;
kfree(pf->irq_pile);
pf->irq_pile = NULL;
} else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
pci_disable_msi(pf->pdev);
}
pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
}
/**
* i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
* @pf: board private structure
*
* We go through and clear interrupt specific resources and reset the structure
* to pre-load conditions
**/
static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
{
int i;
i40e_stop_misc_vector(pf);
if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
synchronize_irq(pf->msix_entries[0].vector);
free_irq(pf->msix_entries[0].vector, pf);
}
i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
I40E_IWARP_IRQ_PILE_ID);
i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
for (i = 0; i < pf->num_alloc_vsi; i++)
if (pf->vsi[i])
i40e_vsi_free_q_vectors(pf->vsi[i]);
i40e_reset_interrupt_capability(pf);
}
/**
* i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
* @vsi: the VSI being configured
**/
static void i40e_napi_enable_all(struct i40e_vsi *vsi)
{
int q_idx;
if (!vsi->netdev)
return;
for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
napi_enable(&vsi->q_vectors[q_idx]->napi);
}
/**
* i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
* @vsi: the VSI being configured
**/
static void i40e_napi_disable_all(struct i40e_vsi *vsi)
{
int q_idx;
if (!vsi->netdev)
return;
for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
napi_disable(&vsi->q_vectors[q_idx]->napi);
}
/**
* i40e_vsi_close - Shut down a VSI
* @vsi: the vsi to be quelled
**/
static void i40e_vsi_close(struct i40e_vsi *vsi)
{
bool reset = false;
if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
i40e_down(vsi);
i40e_vsi_free_irq(vsi);
i40e_vsi_free_tx_resources(vsi);
i40e_vsi_free_rx_resources(vsi);
vsi->current_netdev_flags = 0;
if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
reset = true;
i40e_notify_client_of_netdev_close(vsi, reset);
}
/**
* i40e_quiesce_vsi - Pause a given VSI
* @vsi: the VSI being paused
**/
static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
{
if (test_bit(__I40E_DOWN, &vsi->state))
return;
/* No need to disable FCoE VSI when Tx suspended */
if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
vsi->type == I40E_VSI_FCOE) {
dev_dbg(&vsi->back->pdev->dev,
"VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
return;
}
set_bit(__I40E_NEEDS_RESTART, &vsi->state);
if (vsi->netdev && netif_running(vsi->netdev))
vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
else
i40e_vsi_close(vsi);
}
/**
* i40e_unquiesce_vsi - Resume a given VSI
* @vsi: the VSI being resumed
**/
static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
{
if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
return;
clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
if (vsi->netdev && netif_running(vsi->netdev))
vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
else
i40e_vsi_open(vsi); /* this clears the DOWN bit */
}
/**
* i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
* @pf: the PF
**/
static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
{
int v;
for (v = 0; v < pf->num_alloc_vsi; v++) {
if (pf->vsi[v])
i40e_quiesce_vsi(pf->vsi[v]);
}
}
/**
* i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
* @pf: the PF
**/
static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
{
int v;
for (v = 0; v < pf->num_alloc_vsi; v++) {
if (pf->vsi[v])
i40e_unquiesce_vsi(pf->vsi[v]);
}
}
#ifdef CONFIG_I40E_DCB
/**
* i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
* @vsi: the VSI being configured
*
* This function waits for the given VSI's queues to be disabled.
**/
static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
int i, pf_q, ret;
pf_q = vsi->base_queue;
for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
/* Check and wait for the disable status of the queue */
ret = i40e_pf_txq_wait(pf, pf_q, false);
if (ret) {
dev_info(&pf->pdev->dev,
"VSI seid %d Tx ring %d disable timeout\n",
vsi->seid, pf_q);
return ret;
}
}
pf_q = vsi->base_queue;
for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
/* Check and wait for the disable status of the queue */
ret = i40e_pf_rxq_wait(pf, pf_q, false);
if (ret) {
dev_info(&pf->pdev->dev,
"VSI seid %d Rx ring %d disable timeout\n",
vsi->seid, pf_q);
return ret;
}
}
return 0;
}
/**
* i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
* @pf: the PF
*
* This function waits for the queues to be in disabled state for all the
* VSIs that are managed by this PF.
**/
static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
{
int v, ret = 0;
for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
/* No need to wait for FCoE VSI queues */
if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
if (ret)
break;
}
}
return ret;
}
#endif
/**
* i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
* @q_idx: TX queue number
* @vsi: Pointer to VSI struct
*
* This function checks specified queue for given VSI. Detects hung condition.
* Sets hung bit since it is two step process. Before next run of service task
* if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
* hung condition remain unchanged and during subsequent run, this function
* issues SW interrupt to recover from hung condition.
**/
static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
{
struct i40e_ring *tx_ring = NULL;
struct i40e_pf *pf;
u32 head, val, tx_pending_hw;
int i;
pf = vsi->back;
/* now that we have an index, find the tx_ring struct */
for (i = 0; i < vsi->num_queue_pairs; i++) {
if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
if (q_idx == vsi->tx_rings[i]->queue_index) {
tx_ring = vsi->tx_rings[i];
break;
}
}
}
if (!tx_ring)
return;
/* Read interrupt register */
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
val = rd32(&pf->hw,
I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
tx_ring->vsi->base_vector - 1));
else
val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
head = i40e_get_head(tx_ring);
tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
/* HW is done executing descriptors, updated HEAD write back,
* but SW hasn't processed those descriptors. If interrupt is
* not generated from this point ON, it could result into
* dev_watchdog detecting timeout on those netdev_queue,
* hence proactively trigger SW interrupt.
*/
if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
/* NAPI Poll didn't run and clear since it was set */
if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
&tx_ring->q_vector->hung_detected)) {
netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending_hw: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
vsi->seid, q_idx, tx_pending_hw,
tx_ring->next_to_clean, head,
tx_ring->next_to_use,
readl(tx_ring->tail));
netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
vsi->seid, q_idx, val);
i40e_force_wb(vsi, tx_ring->q_vector);
} else {
/* First Chance - detected possible hung */
set_bit(I40E_Q_VECTOR_HUNG_DETECT,
&tx_ring->q_vector->hung_detected);
}
}
/* This is the case where we have interrupts missing,
* so the tx_pending in HW will most likely be 0, but we
* will have tx_pending in SW since the WB happened but the
* interrupt got lost.
*/
if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
(!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
if (napi_reschedule(&tx_ring->q_vector->napi))
tx_ring->tx_stats.tx_lost_interrupt++;
}
}
/**
* i40e_detect_recover_hung - Function to detect and recover hung_queues
* @pf: pointer to PF struct
*
* LAN VSI has netdev and netdev has TX queues. This function is to check
* each of those TX queues if they are hung, trigger recovery by issuing
* SW interrupt.
**/
static void i40e_detect_recover_hung(struct i40e_pf *pf)
{
struct net_device *netdev;
struct i40e_vsi *vsi;
int i;
/* Only for LAN VSI */
vsi = pf->vsi[pf->lan_vsi];
if (!vsi)
return;
/* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
if (test_bit(__I40E_DOWN, &vsi->back->state) ||
test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
return;
/* Make sure type is MAIN VSI */
if (vsi->type != I40E_VSI_MAIN)
return;
netdev = vsi->netdev;
if (!netdev)
return;
/* Bail out if netif_carrier is not OK */
if (!netif_carrier_ok(netdev))
return;
/* Go thru' TX queues for netdev */
for (i = 0; i < netdev->num_tx_queues; i++) {
struct netdev_queue *q;
q = netdev_get_tx_queue(netdev, i);
if (q)
i40e_detect_recover_hung_queue(i, vsi);
}
}
/**
* i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
* @pf: pointer to PF
*
* Get TC map for ISCSI PF type that will include iSCSI TC
* and LAN TC.
**/
static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
{
struct i40e_dcb_app_priority_table app;
struct i40e_hw *hw = &pf->hw;
u8 enabled_tc = 1; /* TC0 is always enabled */
u8 tc, i;
/* Get the iSCSI APP TLV */
struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
for (i = 0; i < dcbcfg->numapps; i++) {
app = dcbcfg->app[i];
if (app.selector == I40E_APP_SEL_TCPIP &&
app.protocolid == I40E_APP_PROTOID_ISCSI) {
tc = dcbcfg->etscfg.prioritytable[app.priority];
enabled_tc |= BIT(tc);
break;
}
}
return enabled_tc;
}
/**
* i40e_dcb_get_num_tc - Get the number of TCs from DCBx config
* @dcbcfg: the corresponding DCBx configuration structure
*
* Return the number of TCs from given DCBx configuration
**/
static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
{
u8 num_tc = 0;
int i;
/* Scan the ETS Config Priority Table to find
* traffic class enabled for a given priority
* and use the traffic class index to get the
* number of traffic classes enabled
*/
for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
if (dcbcfg->etscfg.prioritytable[i] > num_tc)
num_tc = dcbcfg->etscfg.prioritytable[i];
}
/* Traffic class index starts from zero so
* increment to return the actual count
*/
return num_tc + 1;
}
/**
* i40e_dcb_get_enabled_tc - Get enabled traffic classes
* @dcbcfg: the corresponding DCBx configuration structure
*
* Query the current DCB configuration and return the number of
* traffic classes enabled from the given DCBX config
**/
static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
{
u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
u8 enabled_tc = 1;
u8 i;
for (i = 0; i < num_tc; i++)
enabled_tc |= BIT(i);
return enabled_tc;
}
/**
* i40e_pf_get_num_tc - Get enabled traffic classes for PF
* @pf: PF being queried
*
* Return number of traffic classes enabled for the given PF
**/
static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
u8 i, enabled_tc;
u8 num_tc = 0;
struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
/* If DCB is not enabled then always in single TC */
if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
return 1;
/* SFP mode will be enabled for all TCs on port */
if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
return i40e_dcb_get_num_tc(dcbcfg);
/* MFP mode return count of enabled TCs for this PF */
if (pf->hw.func_caps.iscsi)
enabled_tc = i40e_get_iscsi_tc_map(pf);
else
return 1; /* Only TC0 */
/* At least have TC0 */
enabled_tc = (enabled_tc ? enabled_tc : 0x1);
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (enabled_tc & BIT(i))
num_tc++;
}
return num_tc;
}
/**
* i40e_pf_get_default_tc - Get bitmap for first enabled TC
* @pf: PF being queried
*
* Return a bitmap for first enabled traffic class for this PF.
**/
static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
{
u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
u8 i = 0;
if (!enabled_tc)
return 0x1; /* TC0 */
/* Find the first enabled TC */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (enabled_tc & BIT(i))
break;
}
return BIT(i);
}
/**
* i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
* @pf: PF being queried
*
* Return a bitmap for enabled traffic classes for this PF.
**/
static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
{
/* If DCB is not enabled for this PF then just return default TC */
if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
return i40e_pf_get_default_tc(pf);
/* SFP mode we want PF to be enabled for all TCs */
if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
/* MFP enabled and iSCSI PF type */
if (pf->hw.func_caps.iscsi)
return i40e_get_iscsi_tc_map(pf);
else
return i40e_pf_get_default_tc(pf);
}
/**
* i40e_vsi_get_bw_info - Query VSI BW Information
* @vsi: the VSI being queried
*
* Returns 0 on success, negative value on failure
**/
static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
{
struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
i40e_status ret;
u32 tc_bw_max;
int i;
/* Get the VSI level BW configuration */
ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't get PF vsi bw config, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
return -EINVAL;
}
/* Get the VSI level BW configuration per TC */
ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't get PF vsi ets bw config, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
return -EINVAL;
}
if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
dev_info(&pf->pdev->dev,
"Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
bw_config.tc_valid_bits,
bw_ets_config.tc_valid_bits);
/* Still continuing */
}
vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
vsi->bw_max_quanta = bw_config.max_bw;
tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
(le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
vsi->bw_ets_limit_credits[i] =
le16_to_cpu(bw_ets_config.credits[i]);
/* 3 bits out of 4 for each TC */
vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
}
return 0;
}
/**
* i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
* @vsi: the VSI being configured
* @enabled_tc: TC bitmap
* @bw_credits: BW shared credits per TC
*
* Returns 0 on success, negative value on failure
**/
static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
u8 *bw_share)
{
struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
i40e_status ret;
int i;
bw_data.tc_valid_bits = enabled_tc;
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
bw_data.tc_bw_credits[i] = bw_share[i];
ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"AQ command Config VSI BW allocation per TC failed = %d\n",
vsi->back->hw.aq.asq_last_status);
return -EINVAL;
}
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
vsi->info.qs_handle[i] = bw_data.qs_handles[i];
return 0;
}
/**
* i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
* @vsi: the VSI being configured
* @enabled_tc: TC map to be enabled
*
**/
static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
{
struct net_device *netdev = vsi->netdev;
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
u8 netdev_tc = 0;
int i;
struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
if (!netdev)
return;
if (!enabled_tc) {
netdev_reset_tc(netdev);
return;
}
/* Set up actual enabled TCs on the VSI */
if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
return;
/* set per TC queues for the VSI */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
/* Only set TC queues for enabled tcs
*
* e.g. For a VSI that has TC0 and TC3 enabled the
* enabled_tc bitmap would be 0x00001001; the driver
* will set the numtc for netdev as 2 that will be
* referenced by the netdev layer as TC 0 and 1.
*/
if (vsi->tc_config.enabled_tc & BIT(i))
netdev_set_tc_queue(netdev,
vsi->tc_config.tc_info[i].netdev_tc,
vsi->tc_config.tc_info[i].qcount,
vsi->tc_config.tc_info[i].qoffset);
}
/* Assign UP2TC map for the VSI */
for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
/* Get the actual TC# for the UP */
u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
/* Get the mapped netdev TC# for the UP */
netdev_tc = vsi->tc_config.tc_info[ets_tc].netdev_tc;
netdev_set_prio_tc_map(netdev, i, netdev_tc);
}
}
/**
* i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
* @vsi: the VSI being configured
* @ctxt: the ctxt buffer returned from AQ VSI update param command
**/
static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
struct i40e_vsi_context *ctxt)
{
/* copy just the sections touched not the entire info
* since not all sections are valid as returned by
* update vsi params
*/
vsi->info.mapping_flags = ctxt->info.mapping_flags;
memcpy(&vsi->info.queue_mapping,
&ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
sizeof(vsi->info.tc_mapping));
}
/**
* i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
* @vsi: VSI to be configured
* @enabled_tc: TC bitmap
*
* This configures a particular VSI for TCs that are mapped to the
* given TC bitmap. It uses default bandwidth share for TCs across
* VSIs to configure TC for a particular VSI.
*
* NOTE:
* It is expected that the VSI queues have been quisced before calling
* this function.
**/
static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
{
u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
struct i40e_vsi_context ctxt;
int ret = 0;
int i;
/* Check if enabled_tc is same as existing or new TCs */
if (vsi->tc_config.enabled_tc == enabled_tc)
return ret;
/* Enable ETS TCs with equal BW Share for now across all VSIs */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (enabled_tc & BIT(i))
bw_share[i] = 1;
}
ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"Failed configuring TC map %d for VSI %d\n",
enabled_tc, vsi->seid);
goto out;
}
/* Update Queue Pairs Mapping for currently enabled UPs */
ctxt.seid = vsi->seid;
ctxt.pf_num = vsi->back->hw.pf_id;
ctxt.vf_num = 0;
ctxt.uplink_seid = vsi->uplink_seid;
ctxt.info = vsi->info;
i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
ctxt.info.valid_sections |=
cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
}
/* Update the VSI after updating the VSI queue-mapping information */
ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"Update vsi tc config failed, err %s aq_err %s\n",
i40e_stat_str(&vsi->back->hw, ret),
i40e_aq_str(&vsi->back->hw,
vsi->back->hw.aq.asq_last_status));
goto out;
}
/* update the local VSI info with updated queue map */
i40e_vsi_update_queue_map(vsi, &ctxt);
vsi->info.valid_sections = 0;
/* Update current VSI BW information */
ret = i40e_vsi_get_bw_info(vsi);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"Failed updating vsi bw info, err %s aq_err %s\n",
i40e_stat_str(&vsi->back->hw, ret),
i40e_aq_str(&vsi->back->hw,
vsi->back->hw.aq.asq_last_status));
goto out;
}
/* Update the netdev TC setup */
i40e_vsi_config_netdev_tc(vsi, enabled_tc);
out:
return ret;
}
/**
* i40e_veb_config_tc - Configure TCs for given VEB
* @veb: given VEB
* @enabled_tc: TC bitmap
*
* Configures given TC bitmap for VEB (switching) element
**/
int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
{
struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
struct i40e_pf *pf = veb->pf;
int ret = 0;
int i;
/* No TCs or already enabled TCs just return */
if (!enabled_tc || veb->enabled_tc == enabled_tc)
return ret;
bw_data.tc_valid_bits = enabled_tc;
/* bw_data.absolute_credits is not set (relative) */
/* Enable ETS TCs with equal BW Share for now */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (enabled_tc & BIT(i))
bw_data.tc_bw_share_credits[i] = 1;
}
ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
&bw_data, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"VEB bw config failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
goto out;
}
/* Update the BW information */
ret = i40e_veb_get_bw_info(veb);
if (ret) {
dev_info(&pf->pdev->dev,
"Failed getting veb bw config, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
}
out:
return ret;
}
#ifdef CONFIG_I40E_DCB
/**
* i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
* @pf: PF struct
*
* Reconfigure VEB/VSIs on a given PF; it is assumed that
* the caller would've quiesce all the VSIs before calling
* this function
**/
static void i40e_dcb_reconfigure(struct i40e_pf *pf)
{
u8 tc_map = 0;
int ret;
u8 v;
/* Enable the TCs available on PF to all VEBs */
tc_map = i40e_pf_get_tc_map(pf);
for (v = 0; v < I40E_MAX_VEB; v++) {
if (!pf->veb[v])
continue;
ret = i40e_veb_config_tc(pf->veb[v], tc_map);
if (ret) {
dev_info(&pf->pdev->dev,
"Failed configuring TC for VEB seid=%d\n",
pf->veb[v]->seid);
/* Will try to configure as many components */
}
}
/* Update each VSI */
for (v = 0; v < pf->num_alloc_vsi; v++) {
if (!pf->vsi[v])
continue;
/* - Enable all TCs for the LAN VSI
#ifdef I40E_FCOE
* - For FCoE VSI only enable the TC configured
* as per the APP TLV
#endif
* - For all others keep them at TC0 for now
*/
if (v == pf->lan_vsi)
tc_map = i40e_pf_get_tc_map(pf);
else
tc_map = i40e_pf_get_default_tc(pf);
#ifdef I40E_FCOE
if (pf->vsi[v]->type == I40E_VSI_FCOE)
tc_map = i40e_get_fcoe_tc_map(pf);
#endif /* #ifdef I40E_FCOE */
ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
if (ret) {
dev_info(&pf->pdev->dev,
"Failed configuring TC for VSI seid=%d\n",
pf->vsi[v]->seid);
/* Will try to configure as many components */
} else {
/* Re-configure VSI vectors based on updated TC map */
i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
if (pf->vsi[v]->netdev)
i40e_dcbnl_set_all(pf->vsi[v]);
}
i40e_notify_client_of_l2_param_changes(pf->vsi[v]);
}
}
/**
* i40e_resume_port_tx - Resume port Tx
* @pf: PF struct
*
* Resume a port's Tx and issue a PF reset in case of failure to
* resume.
**/
static int i40e_resume_port_tx(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
int ret;
ret = i40e_aq_resume_port_tx(hw, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"Resume Port Tx failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
/* Schedule PF reset to recover */
set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
i40e_service_event_schedule(pf);
}
return ret;
}
/**
* i40e_init_pf_dcb - Initialize DCB configuration
* @pf: PF being configured
*
* Query the current DCB configuration and cache it
* in the hardware structure
**/
static int i40e_init_pf_dcb(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
int err = 0;
/* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
goto out;
/* Get the initial DCB configuration */
err = i40e_init_dcb(hw);
if (!err) {
/* Device/Function is not DCBX capable */
if ((!hw->func_caps.dcb) ||
(hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
dev_info(&pf->pdev->dev,
"DCBX offload is not supported or is disabled for this PF.\n");
if (pf->flags & I40E_FLAG_MFP_ENABLED)
goto out;
} else {
/* When status is not DISABLED then DCBX in FW */
pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
DCB_CAP_DCBX_VER_IEEE;
pf->flags |= I40E_FLAG_DCB_CAPABLE;
/* Enable DCB tagging only when more than one TC */
if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
pf->flags |= I40E_FLAG_DCB_ENABLED;
dev_dbg(&pf->pdev->dev,
"DCBX offload is supported for this PF.\n");
}
} else {
dev_info(&pf->pdev->dev,
"Query for DCB configuration failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, err),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
}
out:
return err;
}
#endif /* CONFIG_I40E_DCB */
#define SPEED_SIZE 14
#define FC_SIZE 8
/**
* i40e_print_link_message - print link up or down
* @vsi: the VSI for which link needs a message
*/
void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
{
char *speed = "Unknown";
char *fc = "Unknown";
if (vsi->current_isup == isup)
return;
vsi->current_isup = isup;
if (!isup) {
netdev_info(vsi->netdev, "NIC Link is Down\n");
return;
}
/* Warn user if link speed on NPAR enabled partition is not at
* least 10GB
*/
if (vsi->back->hw.func_caps.npar_enable &&
(vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
netdev_warn(vsi->netdev,
"The partition detected link speed that is less than 10Gbps\n");
switch (vsi->back->hw.phy.link_info.link_speed) {
case I40E_LINK_SPEED_40GB:
speed = "40 G";
break;
case I40E_LINK_SPEED_20GB:
speed = "20 G";
break;
case I40E_LINK_SPEED_10GB:
speed = "10 G";
break;
case I40E_LINK_SPEED_1GB:
speed = "1000 M";
break;
case I40E_LINK_SPEED_100MB:
speed = "100 M";
break;
default:
break;
}
switch (vsi->back->hw.fc.current_mode) {
case I40E_FC_FULL:
fc = "RX/TX";
break;
case I40E_FC_TX_PAUSE:
fc = "TX";
break;
case I40E_FC_RX_PAUSE:
fc = "RX";
break;
default:
fc = "None";
break;
}
netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
speed, fc);
}
/**
* i40e_up_complete - Finish the last steps of bringing up a connection
* @vsi: the VSI being configured
**/
static int i40e_up_complete(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
int err;
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
i40e_vsi_configure_msix(vsi);
else
i40e_configure_msi_and_legacy(vsi);
/* start rings */
err = i40e_vsi_control_rings(vsi, true);
if (err)
return err;
clear_bit(__I40E_DOWN, &vsi->state);
i40e_napi_enable_all(vsi);
i40e_vsi_enable_irq(vsi);
if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
(vsi->netdev)) {
i40e_print_link_message(vsi, true);
netif_tx_start_all_queues(vsi->netdev);
netif_carrier_on(vsi->netdev);
} else if (vsi->netdev) {
i40e_print_link_message(vsi, false);
/* need to check for qualified module here*/
if ((pf->hw.phy.link_info.link_info &
I40E_AQ_MEDIA_AVAILABLE) &&
(!(pf->hw.phy.link_info.an_info &
I40E_AQ_QUALIFIED_MODULE)))
netdev_err(vsi->netdev,
"the driver failed to link because an unqualified module was detected.");
}
/* replay FDIR SB filters */
if (vsi->type == I40E_VSI_FDIR) {
/* reset fd counters */
pf->fd_add_err = pf->fd_atr_cnt = 0;
if (pf->fd_tcp_rule > 0) {
pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
if (I40E_DEBUG_FD & pf->hw.debug_mask)
dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
pf->fd_tcp_rule = 0;
}
i40e_fdir_filter_restore(vsi);
}
/* On the next run of the service_task, notify any clients of the new
* opened netdev
*/
pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
i40e_service_event_schedule(pf);
return 0;
}
/**
* i40e_vsi_reinit_locked - Reset the VSI
* @vsi: the VSI being configured
*
* Rebuild the ring structs after some configuration
* has changed, e.g. MTU size.
**/
static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
WARN_ON(in_interrupt());
while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
usleep_range(1000, 2000);
i40e_down(vsi);
/* Give a VF some time to respond to the reset. The
* two second wait is based upon the watchdog cycle in
* the VF driver.
*/
if (vsi->type == I40E_VSI_SRIOV)
msleep(2000);
i40e_up(vsi);
clear_bit(__I40E_CONFIG_BUSY, &pf->state);
}
/**
* i40e_up - Bring the connection back up after being down
* @vsi: the VSI being configured
**/
int i40e_up(struct i40e_vsi *vsi)
{
int err;
err = i40e_vsi_configure(vsi);
if (!err)
err = i40e_up_complete(vsi);
return err;
}
/**
* i40e_down - Shutdown the connection processing
* @vsi: the VSI being stopped
**/
void i40e_down(struct i40e_vsi *vsi)
{
int i;
/* It is assumed that the caller of this function
* sets the vsi->state __I40E_DOWN bit.
*/
if (vsi->netdev) {
netif_carrier_off(vsi->netdev);
netif_tx_disable(vsi->netdev);
}
i40e_vsi_disable_irq(vsi);
i40e_vsi_control_rings(vsi, false);
i40e_napi_disable_all(vsi);
for (i = 0; i < vsi->num_queue_pairs; i++) {
i40e_clean_tx_ring(vsi->tx_rings[i]);
i40e_clean_rx_ring(vsi->rx_rings[i]);
}
}
/**
* i40e_setup_tc - configure multiple traffic classes
* @netdev: net device to configure
* @tc: number of traffic classes to enable
**/
static int i40e_setup_tc(struct net_device *netdev, u8 tc)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u8 enabled_tc = 0;
int ret = -EINVAL;
int i;
/* Check if DCB enabled to continue */
if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
netdev_info(netdev, "DCB is not enabled for adapter\n");
goto exit;
}
/* Check if MFP enabled */
if (pf->flags & I40E_FLAG_MFP_ENABLED) {
netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
goto exit;
}
/* Check whether tc count is within enabled limit */
if (tc > i40e_pf_get_num_tc(pf)) {
netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
goto exit;
}
/* Generate TC map for number of tc requested */
for (i = 0; i < tc; i++)
enabled_tc |= BIT(i);
/* Requesting same TC configuration as already enabled */
if (enabled_tc == vsi->tc_config.enabled_tc)
return 0;
/* Quiesce VSI queues */
i40e_quiesce_vsi(vsi);
/* Configure VSI for enabled TCs */
ret = i40e_vsi_config_tc(vsi, enabled_tc);
if (ret) {
netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
vsi->seid);
goto exit;
}
/* Unquiesce VSI */
i40e_unquiesce_vsi(vsi);
exit:
return ret;
}
#ifdef I40E_FCOE
int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
struct tc_to_netdev *tc)
#else
static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
struct tc_to_netdev *tc)
#endif
{
if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
return -EINVAL;
return i40e_setup_tc(netdev, tc->tc);
}
/**
* i40e_open - Called when a network interface is made active
* @netdev: network interface device structure
*
* The open entry point is called when a network interface is made
* active by the system (IFF_UP). At this point all resources needed
* for transmit and receive operations are allocated, the interrupt
* handler is registered with the OS, the netdev watchdog subtask is
* enabled, and the stack is notified that the interface is ready.
*
* Returns 0 on success, negative value on failure
**/
int i40e_open(struct net_device *netdev)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
int err;
/* disallow open during test or if eeprom is broken */
if (test_bit(__I40E_TESTING, &pf->state) ||
test_bit(__I40E_BAD_EEPROM, &pf->state))
return -EBUSY;
netif_carrier_off(netdev);
err = i40e_vsi_open(vsi);
if (err)
return err;
/* configure global TSO hardware offload settings */
wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
TCP_FLAG_FIN) >> 16);
wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
TCP_FLAG_FIN |
TCP_FLAG_CWR) >> 16);
wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
#ifdef CONFIG_I40E_VXLAN
vxlan_get_rx_port(netdev);
#endif
#ifdef CONFIG_I40E_GENEVE
if (pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE)
geneve_get_rx_port(netdev);
#endif
i40e_notify_client_of_netdev_open(vsi);
return 0;
}
/**
* i40e_vsi_open -
* @vsi: the VSI to open
*
* Finish initialization of the VSI.
*
* Returns 0 on success, negative value on failure
**/
int i40e_vsi_open(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
char int_name[I40E_INT_NAME_STR_LEN];
int err;
/* allocate descriptors */
err = i40e_vsi_setup_tx_resources(vsi);
if (err)
goto err_setup_tx;
err = i40e_vsi_setup_rx_resources(vsi);
if (err)
goto err_setup_rx;
err = i40e_vsi_configure(vsi);
if (err)
goto err_setup_rx;
if (vsi->netdev) {
snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
err = i40e_vsi_request_irq(vsi, int_name);
if (err)
goto err_setup_rx;
/* Notify the stack of the actual queue counts. */
err = netif_set_real_num_tx_queues(vsi->netdev,
vsi->num_queue_pairs);
if (err)
goto err_set_queues;
err = netif_set_real_num_rx_queues(vsi->netdev,
vsi->num_queue_pairs);
if (err)
goto err_set_queues;
} else if (vsi->type == I40E_VSI_FDIR) {
snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
dev_driver_string(&pf->pdev->dev),
dev_name(&pf->pdev->dev));
err = i40e_vsi_request_irq(vsi, int_name);
} else {
err = -EINVAL;
goto err_setup_rx;
}
err = i40e_up_complete(vsi);
if (err)
goto err_up_complete;
return 0;
err_up_complete:
i40e_down(vsi);
err_set_queues:
i40e_vsi_free_irq(vsi);
err_setup_rx:
i40e_vsi_free_rx_resources(vsi);
err_setup_tx:
i40e_vsi_free_tx_resources(vsi);
if (vsi == pf->vsi[pf->lan_vsi])
i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
return err;
}
/**
* i40e_fdir_filter_exit - Cleans up the Flow Director accounting
* @pf: Pointer to PF
*
* This function destroys the hlist where all the Flow Director
* filters were saved.
**/
static void i40e_fdir_filter_exit(struct i40e_pf *pf)
{
struct i40e_fdir_filter *filter;
struct hlist_node *node2;
hlist_for_each_entry_safe(filter, node2,
&pf->fdir_filter_list, fdir_node) {
hlist_del(&filter->fdir_node);
kfree(filter);
}
pf->fdir_pf_active_filters = 0;
}
/**
* i40e_close - Disables a network interface
* @netdev: network interface device structure
*
* The close entry point is called when an interface is de-activated
* by the OS. The hardware is still under the driver's control, but
* this netdev interface is disabled.
*
* Returns 0, this is not allowed to fail
**/
int i40e_close(struct net_device *netdev)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
i40e_vsi_close(vsi);
return 0;
}
/**
* i40e_do_reset - Start a PF or Core Reset sequence
* @pf: board private structure
* @reset_flags: which reset is requested
*
* The essential difference in resets is that the PF Reset
* doesn't clear the packet buffers, doesn't reset the PE
* firmware, and doesn't bother the other PFs on the chip.
**/
void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
{
u32 val;
WARN_ON(in_interrupt());
/* do the biggest reset indicated */
if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
/* Request a Global Reset
*
* This will start the chip's countdown to the actual full
* chip reset event, and a warning interrupt to be sent
* to all PFs, including the requestor. Our handler
* for the warning interrupt will deal with the shutdown
* and recovery of the switch setup.
*/
dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
} else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
/* Request a Core Reset
*
* Same as Global Reset, except does *not* include the MAC/PHY
*/
dev_dbg(&pf->pdev->dev, "CoreR requested\n");
val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
val |= I40E_GLGEN_RTRIG_CORER_MASK;
wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
i40e_flush(&pf->hw);
} else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
/* Request a PF Reset
*
* Resets only the PF-specific registers
*
* This goes directly to the tear-down and rebuild of
* the switch, since we need to do all the recovery as
* for the Core Reset.
*/
dev_dbg(&pf->pdev->dev, "PFR requested\n");
i40e_handle_reset_warning(pf);
} else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
int v;
/* Find the VSI(s) that requested a re-init */
dev_info(&pf->pdev->dev,
"VSI reinit requested\n");
for (v = 0; v < pf->num_alloc_vsi; v++) {
struct i40e_vsi *vsi = pf->vsi[v];
if (vsi != NULL &&
test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
i40e_vsi_reinit_locked(pf->vsi[v]);
clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
}
}
} else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
int v;
/* Find the VSI(s) that needs to be brought down */
dev_info(&pf->pdev->dev, "VSI down requested\n");
for (v = 0; v < pf->num_alloc_vsi; v++) {
struct i40e_vsi *vsi = pf->vsi[v];
if (vsi != NULL &&
test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
set_bit(__I40E_DOWN, &vsi->state);
i40e_down(vsi);
clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
}
}
} else {
dev_info(&pf->pdev->dev,
"bad reset request 0x%08x\n", reset_flags);
}
}
#ifdef CONFIG_I40E_DCB
/**
* i40e_dcb_need_reconfig - Check if DCB needs reconfig
* @pf: board private structure
* @old_cfg: current DCB config
* @new_cfg: new DCB config
**/
bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
struct i40e_dcbx_config *old_cfg,
struct i40e_dcbx_config *new_cfg)
{
bool need_reconfig = false;
/* Check if ETS configuration has changed */
if (memcmp(&new_cfg->etscfg,
&old_cfg->etscfg,
sizeof(new_cfg->etscfg))) {
/* If Priority Table has changed reconfig is needed */
if (memcmp(&new_cfg->etscfg.prioritytable,
&old_cfg->etscfg.prioritytable,
sizeof(new_cfg->etscfg.prioritytable))) {
need_reconfig = true;
dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
}
if (memcmp(&new_cfg->etscfg.tcbwtable,
&old_cfg->etscfg.tcbwtable,
sizeof(new_cfg->etscfg.tcbwtable)))
dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
if (memcmp(&new_cfg->etscfg.tsatable,
&old_cfg->etscfg.tsatable,
sizeof(new_cfg->etscfg.tsatable)))
dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
}
/* Check if PFC configuration has changed */
if (memcmp(&new_cfg->pfc,
&old_cfg->pfc,
sizeof(new_cfg->pfc))) {
need_reconfig = true;
dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
}
/* Check if APP Table has changed */
if (memcmp(&new_cfg->app,
&old_cfg->app,
sizeof(new_cfg->app))) {
need_reconfig = true;
dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
}
dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
return need_reconfig;
}
/**
* i40e_handle_lldp_event - Handle LLDP Change MIB event
* @pf: board private structure
* @e: event info posted on ARQ
**/
static int i40e_handle_lldp_event(struct i40e_pf *pf,
struct i40e_arq_event_info *e)
{
struct i40e_aqc_lldp_get_mib *mib =
(struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
struct i40e_hw *hw = &pf->hw;
struct i40e_dcbx_config tmp_dcbx_cfg;
bool need_reconfig = false;
int ret = 0;
u8 type;
/* Not DCB capable or capability disabled */
if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
return ret;
/* Ignore if event is not for Nearest Bridge */
type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
& I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
return ret;
/* Check MIB Type and return if event for Remote MIB update */
type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
dev_dbg(&pf->pdev->dev,
"LLDP event mib type %s\n", type ? "remote" : "local");
if (type == I40E_AQ_LLDP_MIB_REMOTE) {
/* Update the remote cached instance and return */
ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
&hw->remote_dcbx_config);
goto exit;
}
/* Store the old configuration */
tmp_dcbx_cfg = hw->local_dcbx_config;
/* Reset the old DCBx configuration data */
memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
/* Get updated DCBX data from firmware */
ret = i40e_get_dcb_config(&pf->hw);
if (ret) {
dev_info(&pf->pdev->dev,
"Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
goto exit;
}
/* No change detected in DCBX configs */
if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
sizeof(tmp_dcbx_cfg))) {
dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
goto exit;
}
need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
&hw->local_dcbx_config);
i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
if (!need_reconfig)
goto exit;
/* Enable DCB tagging only when more than one TC */
if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
pf->flags |= I40E_FLAG_DCB_ENABLED;
else
pf->flags &= ~I40E_FLAG_DCB_ENABLED;
set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
/* Reconfiguration needed quiesce all VSIs */
i40e_pf_quiesce_all_vsi(pf);
/* Changes in configuration update VEB/VSI */
i40e_dcb_reconfigure(pf);
ret = i40e_resume_port_tx(pf);
clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
/* In case of error no point in resuming VSIs */
if (ret)
goto exit;
/* Wait for the PF's queues to be disabled */
ret = i40e_pf_wait_queues_disabled(pf);
if (ret) {
/* Schedule PF reset to recover */
set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
i40e_service_event_schedule(pf);
} else {
i40e_pf_unquiesce_all_vsi(pf);
}
exit:
return ret;
}
#endif /* CONFIG_I40E_DCB */
/**
* i40e_do_reset_safe - Protected reset path for userland calls.
* @pf: board private structure
* @reset_flags: which reset is requested
*
**/
void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
{
rtnl_lock();
i40e_do_reset(pf, reset_flags);
rtnl_unlock();
}
/**
* i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
* @pf: board private structure
* @e: event info posted on ARQ
*
* Handler for LAN Queue Overflow Event generated by the firmware for PF
* and VF queues
**/
static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
struct i40e_arq_event_info *e)
{
struct i40e_aqc_lan_overflow *data =
(struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
u32 queue = le32_to_cpu(data->prtdcb_rupto);
u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
struct i40e_hw *hw = &pf->hw;
struct i40e_vf *vf;
u16 vf_id;
dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
queue, qtx_ctl);
/* Queue belongs to VF, find the VF and issue VF reset */
if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
>> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
>> I40E_QTX_CTL_VFVM_INDX_SHIFT);
vf_id -= hw->func_caps.vf_base_id;
vf = &pf->vf[vf_id];
i40e_vc_notify_vf_reset(vf);
/* Allow VF to process pending reset notification */
msleep(20);
i40e_reset_vf(vf, false);
}
}
/**
* i40e_service_event_complete - Finish up the service event
* @pf: board private structure
**/
static void i40e_service_event_complete(struct i40e_pf *pf)
{
WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
/* flush memory to make sure state is correct before next watchog */
smp_mb__before_atomic();
clear_bit(__I40E_SERVICE_SCHED, &pf->state);
}
/**
* i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
* @pf: board private structure
**/
u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
{
u32 val, fcnt_prog;
val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
return fcnt_prog;
}
/**
* i40e_get_current_fd_count - Get total FD filters programmed for this PF
* @pf: board private structure
**/
u32 i40e_get_current_fd_count(struct i40e_pf *pf)
{
u32 val, fcnt_prog;
val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
return fcnt_prog;
}
/**
* i40e_get_global_fd_count - Get total FD filters programmed on device
* @pf: board private structure
**/
u32 i40e_get_global_fd_count(struct i40e_pf *pf)
{
u32 val, fcnt_prog;
val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
return fcnt_prog;
}
/**
* i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
* @pf: board private structure
**/
void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
{
struct i40e_fdir_filter *filter;
u32 fcnt_prog, fcnt_avail;
struct hlist_node *node;
if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
return;
/* Check if, FD SB or ATR was auto disabled and if there is enough room
* to re-enable
*/
fcnt_prog = i40e_get_global_fd_count(pf);
fcnt_avail = pf->fdir_pf_filter_count;
if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
(pf->fd_add_err == 0) ||
(i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
if (I40E_DEBUG_FD & pf->hw.debug_mask)
dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
}
}
/* Wait for some more space to be available to turn on ATR */
if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
if (I40E_DEBUG_FD & pf->hw.debug_mask)
dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
}
}
/* if hw had a problem adding a filter, delete it */
if (pf->fd_inv > 0) {
hlist_for_each_entry_safe(filter, node,
&pf->fdir_filter_list, fdir_node) {
if (filter->fd_id == pf->fd_inv) {
hlist_del(&filter->fdir_node);
kfree(filter);
pf->fdir_pf_active_filters--;
}
}
}
}
#define I40E_MIN_FD_FLUSH_INTERVAL 10
#define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
/**
* i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
* @pf: board private structure
**/
static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
{
unsigned long min_flush_time;
int flush_wait_retry = 50;
bool disable_atr = false;
int fd_room;
int reg;
if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
return;
if (!time_after(jiffies, pf->fd_flush_timestamp +
(I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
return;
/* If the flush is happening too quick and we have mostly SB rules we
* should not re-enable ATR for some time.
*/
min_flush_time = pf->fd_flush_timestamp +
(I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
if (!(time_after(jiffies, min_flush_time)) &&
(fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
if (I40E_DEBUG_FD & pf->hw.debug_mask)
dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
disable_atr = true;
}
pf->fd_flush_timestamp = jiffies;
pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
/* flush all filters */
wr32(&pf->hw, I40E_PFQF_CTL_1,
I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
i40e_flush(&pf->hw);
pf->fd_flush_cnt++;
pf->fd_add_err = 0;
do {
/* Check FD flush status every 5-6msec */
usleep_range(5000, 6000);
reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
break;
} while (flush_wait_retry--);
if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
} else {
/* replay sideband filters */
i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
if (!disable_atr)
pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
if (I40E_DEBUG_FD & pf->hw.debug_mask)
dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
}
}
/**
* i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
* @pf: board private structure
**/
u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
{
return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
}
/* We can see up to 256 filter programming desc in transit if the filters are
* being applied really fast; before we see the first
* filter miss error on Rx queue 0. Accumulating enough error messages before
* reacting will make sure we don't cause flush too often.
*/
#define I40E_MAX_FD_PROGRAM_ERROR 256
/**
* i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
* @pf: board private structure
**/
static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
{
/* if interface is down do nothing */
if (test_bit(__I40E_DOWN, &pf->state))
return;
if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
return;
if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
i40e_fdir_flush_and_replay(pf);
i40e_fdir_check_and_reenable(pf);
}
/**
* i40e_vsi_link_event - notify VSI of a link event
* @vsi: vsi to be notified
* @link_up: link up or down
**/
static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
{
if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
return;
switch (vsi->type) {
case I40E_VSI_MAIN:
#ifdef I40E_FCOE
case I40E_VSI_FCOE:
#endif
if (!vsi->netdev || !vsi->netdev_registered)
break;
if (link_up) {
netif_carrier_on(vsi->netdev);
netif_tx_wake_all_queues(vsi->netdev);
} else {
netif_carrier_off(vsi->netdev);
netif_tx_stop_all_queues(vsi->netdev);
}
break;
case I40E_VSI_SRIOV:
case I40E_VSI_VMDQ2:
case I40E_VSI_CTRL:
case I40E_VSI_IWARP:
case I40E_VSI_MIRROR:
default:
/* there is no notification for other VSIs */
break;
}
}
/**
* i40e_veb_link_event - notify elements on the veb of a link event
* @veb: veb to be notified
* @link_up: link up or down
**/
static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
{
struct i40e_pf *pf;
int i;
if (!veb || !veb->pf)
return;
pf = veb->pf;
/* depth first... */
for (i = 0; i < I40E_MAX_VEB; i++)
if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
i40e_veb_link_event(pf->veb[i], link_up);
/* ... now the local VSIs */
for (i = 0; i < pf->num_alloc_vsi; i++)
if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
i40e_vsi_link_event(pf->vsi[i], link_up);
}
/**
* i40e_link_event - Update netif_carrier status
* @pf: board private structure
**/
static void i40e_link_event(struct i40e_pf *pf)
{
struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
u8 new_link_speed, old_link_speed;
i40e_status status;
bool new_link, old_link;
/* save off old link status information */
pf->hw.phy.link_info_old = pf->hw.phy.link_info;
/* set this to force the get_link_status call to refresh state */
pf->hw.phy.get_link_info = true;
old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
status = i40e_get_link_status(&pf->hw, &new_link);
if (status) {
dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
status);
return;
}
old_link_speed = pf->hw.phy.link_info_old.link_speed;
new_link_speed = pf->hw.phy.link_info.link_speed;
if (new_link == old_link &&
new_link_speed == old_link_speed &&
(test_bit(__I40E_DOWN, &vsi->state) ||
new_link == netif_carrier_ok(vsi->netdev)))
return;
if (!test_bit(__I40E_DOWN, &vsi->state))
i40e_print_link_message(vsi, new_link);
/* Notify the base of the switch tree connected to
* the link. Floating VEBs are not notified.
*/
if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
else
i40e_vsi_link_event(vsi, new_link);
if (pf->vf)
i40e_vc_notify_link_state(pf);
if (pf->flags & I40E_FLAG_PTP)
i40e_ptp_set_increment(pf);
}
/**
* i40e_watchdog_subtask - periodic checks not using event driven response
* @pf: board private structure
**/
static void i40e_watchdog_subtask(struct i40e_pf *pf)
{
int i;
/* if interface is down do nothing */
if (test_bit(__I40E_DOWN, &pf->state) ||
test_bit(__I40E_CONFIG_BUSY, &pf->state))
return;
/* make sure we don't do these things too often */
if (time_before(jiffies, (pf->service_timer_previous +
pf->service_timer_period)))
return;
pf->service_timer_previous = jiffies;
if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
i40e_link_event(pf);
/* Update the stats for active netdevs so the network stack
* can look at updated numbers whenever it cares to
*/
for (i = 0; i < pf->num_alloc_vsi; i++)
if (pf->vsi[i] && pf->vsi[i]->netdev)
i40e_update_stats(pf->vsi[i]);
if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
/* Update the stats for the active switching components */
for (i = 0; i < I40E_MAX_VEB; i++)
if (pf->veb[i])
i40e_update_veb_stats(pf->veb[i]);
}
i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
}
/**
* i40e_reset_subtask - Set up for resetting the device and driver
* @pf: board private structure
**/
static void i40e_reset_subtask(struct i40e_pf *pf)
{
u32 reset_flags = 0;
rtnl_lock();
if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
reset_flags |= BIT(__I40E_REINIT_REQUESTED);
clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
}
if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
}
if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
}
if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
}
if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
reset_flags |= BIT(__I40E_DOWN_REQUESTED);
clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
}
/* If there's a recovery already waiting, it takes
* precedence before starting a new reset sequence.
*/
if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
i40e_handle_reset_warning(pf);
goto unlock;
}
/* If we're already down or resetting, just bail */
if (reset_flags &&
!test_bit(__I40E_DOWN, &pf->state) &&
!test_bit(__I40E_CONFIG_BUSY, &pf->state))
i40e_do_reset(pf, reset_flags);
unlock:
rtnl_unlock();
}
/**
* i40e_handle_link_event - Handle link event
* @pf: board private structure
* @e: event info posted on ARQ
**/
static void i40e_handle_link_event(struct i40e_pf *pf,
struct i40e_arq_event_info *e)
{
struct i40e_aqc_get_link_status *status =
(struct i40e_aqc_get_link_status *)&e->desc.params.raw;
/* Do a new status request to re-enable LSE reporting
* and load new status information into the hw struct
* This completely ignores any state information
* in the ARQ event info, instead choosing to always
* issue the AQ update link status command.
*/
i40e_link_event(pf);
/* check for unqualified module, if link is down */
if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
(!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
(!(status->link_info & I40E_AQ_LINK_UP)))
dev_err(&pf->pdev->dev,
"The driver failed to link because an unqualified module was detected.\n");
}
/**
* i40e_clean_adminq_subtask - Clean the AdminQ rings
* @pf: board private structure
**/
static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
{
struct i40e_arq_event_info event;
struct i40e_hw *hw = &pf->hw;
u16 pending, i = 0;
i40e_status ret;
u16 opcode;
u32 oldval;
u32 val;
/* Do not run clean AQ when PF reset fails */
if (test_bit(__I40E_RESET_FAILED, &pf->state))
return;
/* check for error indications */
val = rd32(&pf->hw, pf->hw.aq.arq.len);
oldval = val;
if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
if (hw->debug_mask & I40E_DEBUG_AQ)
dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
}
if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
if (hw->debug_mask & I40E_DEBUG_AQ)
dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
pf->arq_overflows++;
}
if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
if (hw->debug_mask & I40E_DEBUG_AQ)
dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
}
if (oldval != val)
wr32(&pf->hw, pf->hw.aq.arq.len, val);
val = rd32(&pf->hw, pf->hw.aq.asq.len);
oldval = val;
if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
if (pf->hw.debug_mask & I40E_DEBUG_AQ)
dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
}
if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
if (pf->hw.debug_mask & I40E_DEBUG_AQ)
dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
}
if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
if (pf->hw.debug_mask & I40E_DEBUG_AQ)
dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
}
if (oldval != val)
wr32(&pf->hw, pf->hw.aq.asq.len, val);
event.buf_len = I40E_MAX_AQ_BUF_SIZE;
event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
if (!event.msg_buf)
return;
do {
ret = i40e_clean_arq_element(hw, &event, &pending);
if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
break;
else if (ret) {
dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
break;
}
opcode = le16_to_cpu(event.desc.opcode);
switch (opcode) {
case i40e_aqc_opc_get_link_status:
i40e_handle_link_event(pf, &event);
break;
case i40e_aqc_opc_send_msg_to_pf:
ret = i40e_vc_process_vf_msg(pf,
le16_to_cpu(event.desc.retval),
le32_to_cpu(event.desc.cookie_high),
le32_to_cpu(event.desc.cookie_low),
event.msg_buf,
event.msg_len);
break;
case i40e_aqc_opc_lldp_update_mib:
dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
#ifdef CONFIG_I40E_DCB
rtnl_lock();
ret = i40e_handle_lldp_event(pf, &event);
rtnl_unlock();
#endif /* CONFIG_I40E_DCB */
break;
case i40e_aqc_opc_event_lan_overflow:
dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
i40e_handle_lan_overflow_event(pf, &event);
break;
case i40e_aqc_opc_send_msg_to_peer:
dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
break;
case i40e_aqc_opc_nvm_erase:
case i40e_aqc_opc_nvm_update:
case i40e_aqc_opc_oem_post_update:
i40e_debug(&pf->hw, I40E_DEBUG_NVM,
"ARQ NVM operation 0x%04x completed\n",
opcode);
break;
default:
dev_info(&pf->pdev->dev,
"ARQ: Unknown event 0x%04x ignored\n",
opcode);
break;
}
} while (pending && (i++ < pf->adminq_work_limit));
clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
/* re-enable Admin queue interrupt cause */
val = rd32(hw, I40E_PFINT_ICR0_ENA);
val |= I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
wr32(hw, I40E_PFINT_ICR0_ENA, val);
i40e_flush(hw);
kfree(event.msg_buf);
}
/**
* i40e_verify_eeprom - make sure eeprom is good to use
* @pf: board private structure
**/
static void i40e_verify_eeprom(struct i40e_pf *pf)
{
int err;
err = i40e_diag_eeprom_test(&pf->hw);
if (err) {
/* retry in case of garbage read */
err = i40e_diag_eeprom_test(&pf->hw);
if (err) {
dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
err);
set_bit(__I40E_BAD_EEPROM, &pf->state);
}
}
if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
clear_bit(__I40E_BAD_EEPROM, &pf->state);
}
}
/**
* i40e_enable_pf_switch_lb
* @pf: pointer to the PF structure
*
* enable switch loop back or die - no point in a return value
**/
static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
{
struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
struct i40e_vsi_context ctxt;
int ret;
ctxt.seid = pf->main_vsi_seid;
ctxt.pf_num = pf->hw.pf_id;
ctxt.vf_num = 0;
ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't get PF vsi config, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
return;
}
ctxt.flags = I40E_AQ_VSI_TYPE_PF;
ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"update vsi switch failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
}
}
/**
* i40e_disable_pf_switch_lb
* @pf: pointer to the PF structure
*
* disable switch loop back or die - no point in a return value
**/
static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
{
struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
struct i40e_vsi_context ctxt;
int ret;
ctxt.seid = pf->main_vsi_seid;
ctxt.pf_num = pf->hw.pf_id;
ctxt.vf_num = 0;
ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't get PF vsi config, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
return;
}
ctxt.flags = I40E_AQ_VSI_TYPE_PF;
ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"update vsi switch failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
}
}
/**
* i40e_config_bridge_mode - Configure the HW bridge mode
* @veb: pointer to the bridge instance
*
* Configure the loop back mode for the LAN VSI that is downlink to the
* specified HW bridge instance. It is expected this function is called
* when a new HW bridge is instantiated.
**/
static void i40e_config_bridge_mode(struct i40e_veb *veb)
{
struct i40e_pf *pf = veb->pf;
if (pf->hw.debug_mask & I40E_DEBUG_LAN)
dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
if (veb->bridge_mode & BRIDGE_MODE_VEPA)
i40e_disable_pf_switch_lb(pf);
else
i40e_enable_pf_switch_lb(pf);
}
/**
* i40e_reconstitute_veb - rebuild the VEB and anything connected to it
* @veb: pointer to the VEB instance
*
* This is a recursive function that first builds the attached VSIs then
* recurses in to build the next layer of VEB. We track the connections
* through our own index numbers because the seid's from the HW could
* change across the reset.
**/
static int i40e_reconstitute_veb(struct i40e_veb *veb)
{
struct i40e_vsi *ctl_vsi = NULL;
struct i40e_pf *pf = veb->pf;
int v, veb_idx;
int ret;
/* build VSI that owns this VEB, temporarily attached to base VEB */
for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
if (pf->vsi[v] &&
pf->vsi[v]->veb_idx == veb->idx &&
pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
ctl_vsi = pf->vsi[v];
break;
}
}
if (!ctl_vsi) {
dev_info(&pf->pdev->dev,
"missing owner VSI for veb_idx %d\n", veb->idx);
ret = -ENOENT;
goto end_reconstitute;
}
if (ctl_vsi != pf->vsi[pf->lan_vsi])
ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
ret = i40e_add_vsi(ctl_vsi);
if (ret) {
dev_info(&pf->pdev->dev,
"rebuild of veb_idx %d owner VSI failed: %d\n",
veb->idx, ret);
goto end_reconstitute;
}
i40e_vsi_reset_stats(ctl_vsi);
/* create the VEB in the switch and move the VSI onto the VEB */
ret = i40e_add_veb(veb, ctl_vsi);
if (ret)
goto end_reconstitute;
if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
veb->bridge_mode = BRIDGE_MODE_VEB;
else
veb->bridge_mode = BRIDGE_MODE_VEPA;
i40e_config_bridge_mode(veb);
/* create the remaining VSIs attached to this VEB */
for (v = 0; v < pf->num_alloc_vsi; v++) {
if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
continue;
if (pf->vsi[v]->veb_idx == veb->idx) {
struct i40e_vsi *vsi = pf->vsi[v];
vsi->uplink_seid = veb->seid;
ret = i40e_add_vsi(vsi);
if (ret) {
dev_info(&pf->pdev->dev,
"rebuild of vsi_idx %d failed: %d\n",
v, ret);
goto end_reconstitute;
}
i40e_vsi_reset_stats(vsi);
}
}
/* create any VEBs attached to this VEB - RECURSION */
for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
pf->veb[veb_idx]->uplink_seid = veb->seid;
ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
if (ret)
break;
}
}
end_reconstitute:
return ret;
}
/**
* i40e_get_capabilities - get info about the HW
* @pf: the PF struct
**/
static int i40e_get_capabilities(struct i40e_pf *pf)
{
struct i40e_aqc_list_capabilities_element_resp *cap_buf;
u16 data_size;
int buf_len;
int err;
buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
do {
cap_buf = kzalloc(buf_len, GFP_KERNEL);
if (!cap_buf)
return -ENOMEM;
/* this loads the data into the hw struct for us */
err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
&data_size,
i40e_aqc_opc_list_func_capabilities,
NULL);
/* data loaded, buffer no longer needed */
kfree(cap_buf);
if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
/* retry with a larger buffer */
buf_len = data_size;
} else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
dev_info(&pf->pdev->dev,
"capability discovery failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, err),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
return -ENODEV;
}
} while (err);
if (pf->hw.debug_mask & I40E_DEBUG_USER)
dev_info(&pf->pdev->dev,
"pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
pf->hw.pf_id, pf->hw.func_caps.num_vfs,
pf->hw.func_caps.num_msix_vectors,
pf->hw.func_caps.num_msix_vectors_vf,
pf->hw.func_caps.fd_filters_guaranteed,
pf->hw.func_caps.fd_filters_best_effort,
pf->hw.func_caps.num_tx_qp,
pf->hw.func_caps.num_vsis);
#define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
+ pf->hw.func_caps.num_vfs)
if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
dev_info(&pf->pdev->dev,
"got num_vsis %d, setting num_vsis to %d\n",
pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
}
return 0;
}
static int i40e_vsi_clear(struct i40e_vsi *vsi);
/**
* i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
* @pf: board private structure
**/
static void i40e_fdir_sb_setup(struct i40e_pf *pf)
{
struct i40e_vsi *vsi;
int i;
/* quick workaround for an NVM issue that leaves a critical register
* uninitialized
*/
if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
static const u32 hkey[] = {
0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
0x95b3a76d};
for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
}
if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
return;
/* find existing VSI and see if it needs configuring */
vsi = NULL;
for (i = 0; i < pf->num_alloc_vsi; i++) {
if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
vsi = pf->vsi[i];
break;
}
}
/* create a new VSI if none exists */
if (!vsi) {
vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
pf->vsi[pf->lan_vsi]->seid, 0);
if (!vsi) {
dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
return;
}
}
i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
}
/**
* i40e_fdir_teardown - release the Flow Director resources
* @pf: board private structure
**/
static void i40e_fdir_teardown(struct i40e_pf *pf)
{
int i;
i40e_fdir_filter_exit(pf);
for (i = 0; i < pf->num_alloc_vsi; i++) {
if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
i40e_vsi_release(pf->vsi[i]);
break;
}
}
}
/**
* i40e_prep_for_reset - prep for the core to reset
* @pf: board private structure
*
* Close up the VFs and other things in prep for PF Reset.
**/
static void i40e_prep_for_reset(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
i40e_status ret = 0;
u32 v;
clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
return;
if (i40e_check_asq_alive(&pf->hw))
i40e_vc_notify_reset(pf);
dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
/* quiesce the VSIs and their queues that are not already DOWN */
i40e_pf_quiesce_all_vsi(pf);
for (v = 0; v < pf->num_alloc_vsi; v++) {
if (pf->vsi[v])
pf->vsi[v]->seid = 0;
}
i40e_shutdown_adminq(&pf->hw);
/* call shutdown HMC */
if (hw->hmc.hmc_obj) {
ret = i40e_shutdown_lan_hmc(hw);
if (ret)
dev_warn(&pf->pdev->dev,
"shutdown_lan_hmc failed: %d\n", ret);
}
}
/**
* i40e_send_version - update firmware with driver version
* @pf: PF struct
*/
static void i40e_send_version(struct i40e_pf *pf)
{
struct i40e_driver_version dv;
dv.major_version = DRV_VERSION_MAJOR;
dv.minor_version = DRV_VERSION_MINOR;
dv.build_version = DRV_VERSION_BUILD;
dv.subbuild_version = 0;
strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
}
/**
* i40e_reset_and_rebuild - reset and rebuild using a saved config
* @pf: board private structure
* @reinit: if the Main VSI needs to re-initialized.
**/
static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
{
struct i40e_hw *hw = &pf->hw;
u8 set_fc_aq_fail = 0;
i40e_status ret;
u32 val;
u32 v;
/* Now we wait for GRST to settle out.
* We don't have to delete the VEBs or VSIs from the hw switch
* because the reset will make them disappear.
*/
ret = i40e_pf_reset(hw);
if (ret) {
dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
set_bit(__I40E_RESET_FAILED, &pf->state);
goto clear_recovery;
}
pf->pfr_count++;
if (test_bit(__I40E_DOWN, &pf->state))
goto clear_recovery;
dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
/* rebuild the basics for the AdminQ, HMC, and initial HW switch */
ret = i40e_init_adminq(&pf->hw);
if (ret) {
dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
goto clear_recovery;
}
/* re-verify the eeprom if we just had an EMP reset */
if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
i40e_verify_eeprom(pf);
i40e_clear_pxe_mode(hw);
ret = i40e_get_capabilities(pf);
if (ret)
goto end_core_reset;
ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
hw->func_caps.num_rx_qp,
pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
if (ret) {
dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
goto end_core_reset;
}
ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
if (ret) {
dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
goto end_core_reset;
}
#ifdef CONFIG_I40E_DCB
ret = i40e_init_pf_dcb(pf);
if (ret) {
dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
/* Continue without DCB enabled */
}
#endif /* CONFIG_I40E_DCB */
#ifdef I40E_FCOE
i40e_init_pf_fcoe(pf);
#endif
/* do basic switch setup */
ret = i40e_setup_pf_switch(pf, reinit);
if (ret)
goto end_core_reset;
/* The driver only wants link up/down and module qualification
* reports from firmware. Note the negative logic.
*/
ret = i40e_aq_set_phy_int_mask(&pf->hw,
~(I40E_AQ_EVENT_LINK_UPDOWN |
I40E_AQ_EVENT_MEDIA_NA |
I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
if (ret)
dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
/* make sure our flow control settings are restored */
ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
if (ret)
dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
/* Rebuild the VSIs and VEBs that existed before reset.
* They are still in our local switch element arrays, so only
* need to rebuild the switch model in the HW.
*
* If there were VEBs but the reconstitution failed, we'll try
* try to recover minimal use by getting the basic PF VSI working.
*/
if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
/* find the one VEB connected to the MAC, and find orphans */
for (v = 0; v < I40E_MAX_VEB; v++) {
if (!pf->veb[v])
continue;
if (pf->veb[v]->uplink_seid == pf->mac_seid ||
pf->veb[v]->uplink_seid == 0) {
ret = i40e_reconstitute_veb(pf->veb[v]);
if (!ret)
continue;
/* If Main VEB failed, we're in deep doodoo,
* so give up rebuilding the switch and set up
* for minimal rebuild of PF VSI.
* If orphan failed, we'll report the error
* but try to keep going.
*/
if (pf->veb[v]->uplink_seid == pf->mac_seid) {
dev_info(&pf->pdev->dev,
"rebuild of switch failed: %d, will try to set up simple PF connection\n",
ret);
pf->vsi[pf->lan_vsi]->uplink_seid
= pf->mac_seid;
break;
} else if (pf->veb[v]->uplink_seid == 0) {
dev_info(&pf->pdev->dev,
"rebuild of orphan VEB failed: %d\n",
ret);
}
}
}
}
if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
/* no VEB, so rebuild only the Main VSI */
ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
if (ret) {
dev_info(&pf->pdev->dev,
"rebuild of Main VSI failed: %d\n", ret);
goto end_core_reset;
}
}
/* Reconfigure hardware for allowing smaller MSS in the case
* of TSO, so that we avoid the MDD being fired and causing
* a reset in the case of small MSS+TSO.
*/
#define I40E_REG_MSS 0x000E64DC
#define I40E_REG_MSS_MIN_MASK 0x3FF0000
#define I40E_64BYTE_MSS 0x400000
val = rd32(hw, I40E_REG_MSS);
if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
val &= ~I40E_REG_MSS_MIN_MASK;
val |= I40E_64BYTE_MSS;
wr32(hw, I40E_REG_MSS, val);
}
if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
msleep(75);
ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
if (ret)
dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
}
/* reinit the misc interrupt */
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
ret = i40e_setup_misc_vector(pf);
/* Add a filter to drop all Flow control frames from any VSI from being
* transmitted. By doing so we stop a malicious VF from sending out
* PAUSE or PFC frames and potentially controlling traffic for other
* PF/VF VSIs.
* The FW can still send Flow control frames if enabled.
*/
i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
pf->main_vsi_seid);
/* restart the VSIs that were rebuilt and running before the reset */
i40e_pf_unquiesce_all_vsi(pf);
if (pf->num_alloc_vfs) {
for (v = 0; v < pf->num_alloc_vfs; v++)
i40e_reset_vf(&pf->vf[v], true);
}
/* tell the firmware that we're starting */
i40e_send_version(pf);
end_core_reset:
clear_bit(__I40E_RESET_FAILED, &pf->state);
clear_recovery:
clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
}
/**
* i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
* @pf: board private structure
*
* Close up the VFs and other things in prep for a Core Reset,
* then get ready to rebuild the world.
**/
static void i40e_handle_reset_warning(struct i40e_pf *pf)
{
i40e_prep_for_reset(pf);
i40e_reset_and_rebuild(pf, false);
}
/**
* i40e_handle_mdd_event
* @pf: pointer to the PF structure
*
* Called from the MDD irq handler to identify possibly malicious vfs
**/
static void i40e_handle_mdd_event(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
bool mdd_detected = false;
bool pf_mdd_detected = false;
struct i40e_vf *vf;
u32 reg;
int i;
if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
return;
/* find what triggered the MDD event */
reg = rd32(hw, I40E_GL_MDET_TX);
if (reg & I40E_GL_MDET_TX_VALID_MASK) {
u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
I40E_GL_MDET_TX_PF_NUM_SHIFT;
u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
I40E_GL_MDET_TX_VF_NUM_SHIFT;
u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
I40E_GL_MDET_TX_EVENT_SHIFT;
u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
I40E_GL_MDET_TX_QUEUE_SHIFT) -
pf->hw.func_caps.base_queue;
if (netif_msg_tx_err(pf))
dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
event, queue, pf_num, vf_num);
wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
mdd_detected = true;
}
reg = rd32(hw, I40E_GL_MDET_RX);
if (reg & I40E_GL_MDET_RX_VALID_MASK) {
u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
I40E_GL_MDET_RX_FUNCTION_SHIFT;
u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
I40E_GL_MDET_RX_EVENT_SHIFT;
u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
I40E_GL_MDET_RX_QUEUE_SHIFT) -
pf->hw.func_caps.base_queue;
if (netif_msg_rx_err(pf))
dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
event, queue, func);
wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
mdd_detected = true;
}
if (mdd_detected) {
reg = rd32(hw, I40E_PF_MDET_TX);
if (reg & I40E_PF_MDET_TX_VALID_MASK) {
wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
pf_mdd_detected = true;
}
reg = rd32(hw, I40E_PF_MDET_RX);
if (reg & I40E_PF_MDET_RX_VALID_MASK) {
wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
pf_mdd_detected = true;
}
/* Queue belongs to the PF, initiate a reset */
if (pf_mdd_detected) {
set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
i40e_service_event_schedule(pf);
}
}
/* see if one of the VFs needs its hand slapped */
for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
vf = &(pf->vf[i]);
reg = rd32(hw, I40E_VP_MDET_TX(i));
if (reg & I40E_VP_MDET_TX_VALID_MASK) {
wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
vf->num_mdd_events++;
dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
i);
}
reg = rd32(hw, I40E_VP_MDET_RX(i));
if (reg & I40E_VP_MDET_RX_VALID_MASK) {
wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
vf->num_mdd_events++;
dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
i);
}
if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
dev_info(&pf->pdev->dev,
"Too many MDD events on VF %d, disabled\n", i);
dev_info(&pf->pdev->dev,
"Use PF Control I/F to re-enable the VF\n");
set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
}
}
/* re-enable mdd interrupt cause */
clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
reg = rd32(hw, I40E_PFINT_ICR0_ENA);
reg |= I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
wr32(hw, I40E_PFINT_ICR0_ENA, reg);
i40e_flush(hw);
}
/**
* i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
* @pf: board private structure
**/
static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
{
#if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
struct i40e_hw *hw = &pf->hw;
i40e_status ret;
__be16 port;
int i;
if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
return;
pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
if (pf->pending_udp_bitmap & BIT_ULL(i)) {
pf->pending_udp_bitmap &= ~BIT_ULL(i);
port = pf->udp_ports[i].index;
if (port)
ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
pf->udp_ports[i].type,
NULL, NULL);
else
ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
if (ret) {
dev_dbg(&pf->pdev->dev,
"%s %s port %d, index %d failed, err %s aq_err %s\n",
pf->udp_ports[i].type ? "vxlan" : "geneve",
port ? "add" : "delete",
ntohs(port), i,
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
pf->udp_ports[i].index = 0;
}
}
}
#endif
}
/**
* i40e_service_task - Run the driver's async subtasks
* @work: pointer to work_struct containing our data
**/
static void i40e_service_task(struct work_struct *work)
{
struct i40e_pf *pf = container_of(work,
struct i40e_pf,
service_task);
unsigned long start_time = jiffies;
/* don't bother with service tasks if a reset is in progress */
if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
i40e_service_event_complete(pf);
return;
}
i40e_detect_recover_hung(pf);
i40e_sync_filters_subtask(pf);
i40e_reset_subtask(pf);
i40e_handle_mdd_event(pf);
i40e_vc_process_vflr_event(pf);
i40e_watchdog_subtask(pf);
i40e_fdir_reinit_subtask(pf);
i40e_client_subtask(pf);
i40e_sync_filters_subtask(pf);
i40e_sync_udp_filters_subtask(pf);
i40e_clean_adminq_subtask(pf);
i40e_service_event_complete(pf);
/* If the tasks have taken longer than one timer cycle or there
* is more work to be done, reschedule the service task now
* rather than wait for the timer to tick again.
*/
if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state) ||
test_bit(__I40E_MDD_EVENT_PENDING, &pf->state) ||
test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
i40e_service_event_schedule(pf);
}
/**
* i40e_service_timer - timer callback
* @data: pointer to PF struct
**/
static void i40e_service_timer(unsigned long data)
{
struct i40e_pf *pf = (struct i40e_pf *)data;
mod_timer(&pf->service_timer,
round_jiffies(jiffies + pf->service_timer_period));
i40e_service_event_schedule(pf);
}
/**
* i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
* @vsi: the VSI being configured
**/
static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
switch (vsi->type) {
case I40E_VSI_MAIN:
vsi->alloc_queue_pairs = pf->num_lan_qps;
vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
I40E_REQ_DESCRIPTOR_MULTIPLE);
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
vsi->num_q_vectors = pf->num_lan_msix;
else
vsi->num_q_vectors = 1;
break;
case I40E_VSI_FDIR:
vsi->alloc_queue_pairs = 1;
vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
I40E_REQ_DESCRIPTOR_MULTIPLE);
vsi->num_q_vectors = 1;
break;
case I40E_VSI_VMDQ2:
vsi->alloc_queue_pairs = pf->num_vmdq_qps;
vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
I40E_REQ_DESCRIPTOR_MULTIPLE);
vsi->num_q_vectors = pf->num_vmdq_msix;
break;
case I40E_VSI_SRIOV:
vsi->alloc_queue_pairs = pf->num_vf_qps;
vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
I40E_REQ_DESCRIPTOR_MULTIPLE);
break;
#ifdef I40E_FCOE
case I40E_VSI_FCOE:
vsi->alloc_queue_pairs = pf->num_fcoe_qps;
vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
I40E_REQ_DESCRIPTOR_MULTIPLE);
vsi->num_q_vectors = pf->num_fcoe_msix;
break;
#endif /* I40E_FCOE */
default:
WARN_ON(1);
return -ENODATA;
}
return 0;
}
/**
* i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
* @type: VSI pointer
* @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
*
* On error: returns error code (negative)
* On success: returns 0
**/
static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
{
int size;
int ret = 0;
/* allocate memory for both Tx and Rx ring pointers */
size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
vsi->tx_rings = kzalloc(size, GFP_KERNEL);
if (!vsi->tx_rings)
return -ENOMEM;
vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
if (alloc_qvectors) {
/* allocate memory for q_vector pointers */
size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
vsi->q_vectors = kzalloc(size, GFP_KERNEL);
if (!vsi->q_vectors) {
ret = -ENOMEM;
goto err_vectors;
}
}
return ret;
err_vectors:
kfree(vsi->tx_rings);
return ret;
}
/**
* i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
* @pf: board private structure
* @type: type of VSI
*
* On error: returns error code (negative)
* On success: returns vsi index in PF (positive)
**/
static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
{
int ret = -ENODEV;
struct i40e_vsi *vsi;
int vsi_idx;
int i;
/* Need to protect the allocation of the VSIs at the PF level */
mutex_lock(&pf->switch_mutex);
/* VSI list may be fragmented if VSI creation/destruction has
* been happening. We can afford to do a quick scan to look
* for any free VSIs in the list.
*
* find next empty vsi slot, looping back around if necessary
*/
i = pf->next_vsi;
while (i < pf->num_alloc_vsi && pf->vsi[i])
i++;
if (i >= pf->num_alloc_vsi) {
i = 0;
while (i < pf->next_vsi && pf->vsi[i])
i++;
}
if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
vsi_idx = i; /* Found one! */
} else {
ret = -ENODEV;
goto unlock_pf; /* out of VSI slots! */
}
pf->next_vsi = ++i;
vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
if (!vsi) {
ret = -ENOMEM;
goto unlock_pf;
}
vsi->type = type;
vsi->back = pf;
set_bit(__I40E_DOWN, &vsi->state);
vsi->flags = 0;
vsi->idx = vsi_idx;
vsi->int_rate_limit = 0;
vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
pf->rss_table_size : 64;
vsi->netdev_registered = false;
vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
INIT_LIST_HEAD(&vsi->mac_filter_list);
vsi->irqs_ready = false;
ret = i40e_set_num_rings_in_vsi(vsi);
if (ret)
goto err_rings;
ret = i40e_vsi_alloc_arrays(vsi, true);
if (ret)
goto err_rings;
/* Setup default MSIX irq handler for VSI */
i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
/* Initialize VSI lock */
spin_lock_init(&vsi->mac_filter_list_lock);
pf->vsi[vsi_idx] = vsi;
ret = vsi_idx;
goto unlock_pf;
err_rings:
pf->next_vsi = i - 1;
kfree(vsi);
unlock_pf:
mutex_unlock(&pf->switch_mutex);
return ret;
}
/**
* i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
* @type: VSI pointer
* @free_qvectors: a bool to specify if q_vectors need to be freed.
*
* On error: returns error code (negative)
* On success: returns 0
**/
static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
{
/* free the ring and vector containers */
if (free_qvectors) {
kfree(vsi->q_vectors);
vsi->q_vectors = NULL;
}
kfree(vsi->tx_rings);
vsi->tx_rings = NULL;
vsi->rx_rings = NULL;
}
/**
* i40e_clear_rss_config_user - clear the user configured RSS hash keys
* and lookup table
* @vsi: Pointer to VSI structure
*/
static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
{
if (!vsi)
return;
kfree(vsi->rss_hkey_user);
vsi->rss_hkey_user = NULL;
kfree(vsi->rss_lut_user);
vsi->rss_lut_user = NULL;
}
/**
* i40e_vsi_clear - Deallocate the VSI provided
* @vsi: the VSI being un-configured
**/
static int i40e_vsi_clear(struct i40e_vsi *vsi)
{
struct i40e_pf *pf;
if (!vsi)
return 0;
if (!vsi->back)
goto free_vsi;
pf = vsi->back;
mutex_lock(&pf->switch_mutex);
if (!pf->vsi[vsi->idx]) {
dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
vsi->idx, vsi->idx, vsi, vsi->type);
goto unlock_vsi;
}
if (pf->vsi[vsi->idx] != vsi) {
dev_err(&pf->pdev->dev,
"pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
pf->vsi[vsi->idx]->idx,
pf->vsi[vsi->idx],
pf->vsi[vsi->idx]->type,
vsi->idx, vsi, vsi->type);
goto unlock_vsi;
}
/* updates the PF for this cleared vsi */
i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
i40e_vsi_free_arrays(vsi, true);
i40e_clear_rss_config_user(vsi);
pf->vsi[vsi->idx] = NULL;
if (vsi->idx < pf->next_vsi)
pf->next_vsi = vsi->idx;
unlock_vsi:
mutex_unlock(&pf->switch_mutex);
free_vsi:
kfree(vsi);
return 0;
}
/**
* i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
* @vsi: the VSI being cleaned
**/
static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
{
int i;
if (vsi->tx_rings && vsi->tx_rings[0]) {
for (i = 0; i < vsi->alloc_queue_pairs; i++) {
kfree_rcu(vsi->tx_rings[i], rcu);
vsi->tx_rings[i] = NULL;
vsi->rx_rings[i] = NULL;
}
}
}
/**
* i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
* @vsi: the VSI being configured
**/
static int i40e_alloc_rings(struct i40e_vsi *vsi)
{
struct i40e_ring *tx_ring, *rx_ring;
struct i40e_pf *pf = vsi->back;
int i;
/* Set basic values in the rings to be used later during open() */
for (i = 0; i < vsi->alloc_queue_pairs; i++) {
/* allocate space for both Tx and Rx in one shot */
tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
if (!tx_ring)
goto err_out;
tx_ring->queue_index = i;
tx_ring->reg_idx = vsi->base_queue + i;
tx_ring->ring_active = false;
tx_ring->vsi = vsi;
tx_ring->netdev = vsi->netdev;
tx_ring->dev = &pf->pdev->dev;
tx_ring->count = vsi->num_desc;
tx_ring->size = 0;
tx_ring->dcb_tc = 0;
if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
tx_ring->tx_itr_setting = pf->tx_itr_default;
vsi->tx_rings[i] = tx_ring;
rx_ring = &tx_ring[1];
rx_ring->queue_index = i;
rx_ring->reg_idx = vsi->base_queue + i;
rx_ring->ring_active = false;
rx_ring->vsi = vsi;
rx_ring->netdev = vsi->netdev;
rx_ring->dev = &pf->pdev->dev;
rx_ring->count = vsi->num_desc;
rx_ring->size = 0;
rx_ring->dcb_tc = 0;
if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
set_ring_16byte_desc_enabled(rx_ring);
else
clear_ring_16byte_desc_enabled(rx_ring);
rx_ring->rx_itr_setting = pf->rx_itr_default;
vsi->rx_rings[i] = rx_ring;
}
return 0;
err_out:
i40e_vsi_clear_rings(vsi);
return -ENOMEM;
}
/**
* i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
* @pf: board private structure
* @vectors: the number of MSI-X vectors to request
*
* Returns the number of vectors reserved, or error
**/
static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
{
vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
I40E_MIN_MSIX, vectors);
if (vectors < 0) {
dev_info(&pf->pdev->dev,
"MSI-X vector reservation failed: %d\n", vectors);
vectors = 0;
}
return vectors;
}
/**
* i40e_init_msix - Setup the MSIX capability
* @pf: board private structure
*
* Work with the OS to set up the MSIX vectors needed.
*
* Returns the number of vectors reserved or negative on failure
**/
static int i40e_init_msix(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
int vectors_left;
int v_budget, i;
int v_actual;
int iwarp_requested = 0;
if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
return -ENODEV;
/* The number of vectors we'll request will be comprised of:
* - Add 1 for "other" cause for Admin Queue events, etc.
* - The number of LAN queue pairs
* - Queues being used for RSS.
* We don't need as many as max_rss_size vectors.
* use rss_size instead in the calculation since that
* is governed by number of cpus in the system.
* - assumes symmetric Tx/Rx pairing
* - The number of VMDq pairs
* - The CPU count within the NUMA node if iWARP is enabled
#ifdef I40E_FCOE
* - The number of FCOE qps.
#endif
* Once we count this up, try the request.
*
* If we can't get what we want, we'll simplify to nearly nothing
* and try again. If that still fails, we punt.
*/
vectors_left = hw->func_caps.num_msix_vectors;
v_budget = 0;
/* reserve one vector for miscellaneous handler */
if (vectors_left) {
v_budget++;
vectors_left--;
}
/* reserve vectors for the main PF traffic queues */
pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
vectors_left -= pf->num_lan_msix;
v_budget += pf->num_lan_msix;
/* reserve one vector for sideband flow director */
if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
if (vectors_left) {
v_budget++;
vectors_left--;
} else {
pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
}
}
#ifdef I40E_FCOE
/* can we reserve enough for FCoE? */
if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
if (!vectors_left)
pf->num_fcoe_msix = 0;
else if (vectors_left >= pf->num_fcoe_qps)
pf->num_fcoe_msix = pf->num_fcoe_qps;
else
pf->num_fcoe_msix = 1;
v_budget += pf->num_fcoe_msix;
vectors_left -= pf->num_fcoe_msix;
}
#endif
/* can we reserve enough for iWARP? */
if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
if (!vectors_left)
pf->num_iwarp_msix = 0;
else if (vectors_left < pf->num_iwarp_msix)
pf->num_iwarp_msix = 1;
v_budget += pf->num_iwarp_msix;
vectors_left -= pf->num_iwarp_msix;
}
/* any vectors left over go for VMDq support */
if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
/* if we're short on vectors for what's desired, we limit
* the queues per vmdq. If this is still more than are
* available, the user will need to change the number of
* queues/vectors used by the PF later with the ethtool
* channels command
*/
if (vmdq_vecs < vmdq_vecs_wanted)
pf->num_vmdq_qps = 1;
pf->num_vmdq_msix = pf->num_vmdq_qps;
v_budget += vmdq_vecs;
vectors_left -= vmdq_vecs;
}
pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
GFP_KERNEL);
if (!pf->msix_entries)
return -ENOMEM;
for (i = 0; i < v_budget; i++)
pf->msix_entries[i].entry = i;
v_actual = i40e_reserve_msix_vectors(pf, v_budget);
if (v_actual != v_budget) {
/* If we have limited resources, we will start with no vectors
* for the special features and then allocate vectors to some
* of these features based on the policy and at the end disable
* the features that did not get any vectors.
*/
iwarp_requested = pf->num_iwarp_msix;
pf->num_iwarp_msix = 0;
#ifdef I40E_FCOE
pf->num_fcoe_qps = 0;
pf->num_fcoe_msix = 0;
#endif
pf->num_vmdq_msix = 0;
}
if (v_actual < I40E_MIN_MSIX) {
pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
kfree(pf->msix_entries);
pf->msix_entries = NULL;
return -ENODEV;
} else if (v_actual == I40E_MIN_MSIX) {
/* Adjust for minimal MSIX use */
pf->num_vmdq_vsis = 0;
pf->num_vmdq_qps = 0;
pf->num_lan_qps = 1;
pf->num_lan_msix = 1;
} else if (v_actual != v_budget) {
int vec;
/* reserve the misc vector */
vec = v_actual - 1;
/* Scale vector usage down */
pf->num_vmdq_msix = 1; /* force VMDqs to only one vector */
pf->num_vmdq_vsis = 1;
pf->num_vmdq_qps = 1;
pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
/* partition out the remaining vectors */
switch (vec) {
case 2:
pf->num_lan_msix = 1;
break;
case 3:
if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
pf->num_lan_msix = 1;
pf->num_iwarp_msix = 1;
} else {
pf->num_lan_msix = 2;
}
#ifdef I40E_FCOE
/* give one vector to FCoE */
if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
pf->num_lan_msix = 1;
pf->num_fcoe_msix = 1;
}
#endif
break;
default:
if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
pf->num_iwarp_msix = min_t(int, (vec / 3),
iwarp_requested);
pf->num_vmdq_vsis = min_t(int, (vec / 3),
I40E_DEFAULT_NUM_VMDQ_VSI);
} else {
pf->num_vmdq_vsis = min_t(int, (vec / 2),
I40E_DEFAULT_NUM_VMDQ_VSI);
}
pf->num_lan_msix = min_t(int,
(vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
pf->num_lan_msix);
#ifdef I40E_FCOE
/* give one vector to FCoE */
if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
pf->num_fcoe_msix = 1;
vec--;
}
#endif
break;
}
}
if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
(pf->num_vmdq_msix == 0)) {
dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
}
if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
(pf->num_iwarp_msix == 0)) {
dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
}
#ifdef I40E_FCOE
if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
}
#endif
return v_actual;
}
/**
* i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
* @vsi: the VSI being configured
* @v_idx: index of the vector in the vsi struct
*
* We allocate one q_vector. If allocation fails we return -ENOMEM.
**/
static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
{
struct i40e_q_vector *q_vector;
/* allocate q_vector */
q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
if (!q_vector)
return -ENOMEM;
q_vector->vsi = vsi;
q_vector->v_idx = v_idx;
cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
if (vsi->netdev)
netif_napi_add(vsi->netdev, &q_vector->napi,
i40e_napi_poll, NAPI_POLL_WEIGHT);
q_vector->rx.latency_range = I40E_LOW_LATENCY;
q_vector->tx.latency_range = I40E_LOW_LATENCY;
/* tie q_vector and vsi together */
vsi->q_vectors[v_idx] = q_vector;
return 0;
}
/**
* i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
* @vsi: the VSI being configured
*
* We allocate one q_vector per queue interrupt. If allocation fails we
* return -ENOMEM.
**/
static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
int v_idx, num_q_vectors;
int err;
/* if not MSIX, give the one vector only to the LAN VSI */
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
num_q_vectors = vsi->num_q_vectors;
else if (vsi == pf->vsi[pf->lan_vsi])
num_q_vectors = 1;
else
return -EINVAL;
for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
err = i40e_vsi_alloc_q_vector(vsi, v_idx);
if (err)
goto err_out;
}
return 0;
err_out:
while (v_idx--)
i40e_free_q_vector(vsi, v_idx);
return err;
}
/**
* i40e_init_interrupt_scheme - Determine proper interrupt scheme
* @pf: board private structure to initialize
**/
static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
{
int vectors = 0;
ssize_t size;
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
vectors = i40e_init_msix(pf);
if (vectors < 0) {
pf->flags &= ~(I40E_FLAG_MSIX_ENABLED |
I40E_FLAG_IWARP_ENABLED |
#ifdef I40E_FCOE
I40E_FLAG_FCOE_ENABLED |
#endif
I40E_FLAG_RSS_ENABLED |
I40E_FLAG_DCB_CAPABLE |
I40E_FLAG_SRIOV_ENABLED |
I40E_FLAG_FD_SB_ENABLED |
I40E_FLAG_FD_ATR_ENABLED |
I40E_FLAG_VMDQ_ENABLED);
/* rework the queue expectations without MSIX */
i40e_determine_queue_usage(pf);
}
}
if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
(pf->flags & I40E_FLAG_MSI_ENABLED)) {
dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
vectors = pci_enable_msi(pf->pdev);
if (vectors < 0) {
dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
vectors);
pf->flags &= ~I40E_FLAG_MSI_ENABLED;
}
vectors = 1; /* one MSI or Legacy vector */
}
if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
/* set up vector assignment tracking */
size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
pf->irq_pile = kzalloc(size, GFP_KERNEL);
if (!pf->irq_pile) {
dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
return -ENOMEM;
}
pf->irq_pile->num_entries = vectors;
pf->irq_pile->search_hint = 0;
/* track first vector for misc interrupts, ignore return */
(void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
return 0;
}
/**
* i40e_setup_misc_vector - Setup the misc vector to handle non queue events
* @pf: board private structure
*
* This sets up the handler for MSIX 0, which is used to manage the
* non-queue interrupts, e.g. AdminQ and errors. This is not used
* when in MSI or Legacy interrupt mode.
**/
static int i40e_setup_misc_vector(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
int err = 0;
/* Only request the irq if this is the first time through, and
* not when we're rebuilding after a Reset
*/
if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
err = request_irq(pf->msix_entries[0].vector,
i40e_intr, 0, pf->int_name, pf);
if (err) {
dev_info(&pf->pdev->dev,
"request_irq for %s failed: %d\n",
pf->int_name, err);
return -EFAULT;
}
}
i40e_enable_misc_int_causes(pf);
/* associate no queues to the misc vector */
wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
i40e_flush(hw);
i40e_irq_dynamic_enable_icr0(pf, true);
return err;
}
/**
* i40e_config_rss_aq - Prepare for RSS using AQ commands
* @vsi: vsi structure
* @seed: RSS hash seed
**/
static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
u8 *lut, u16 lut_size)
{
struct i40e_aqc_get_set_rss_key_data rss_key;
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
bool pf_lut = false;
u8 *rss_lut;
int ret, i;
memset(&rss_key, 0, sizeof(rss_key));
memcpy(&rss_key, seed, sizeof(rss_key));
rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
if (!rss_lut)
return -ENOMEM;
/* Populate the LUT with max no. of queues in round robin fashion */
for (i = 0; i < vsi->rss_table_size; i++)
rss_lut[i] = i % vsi->rss_size;
ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
if (ret) {
dev_info(&pf->pdev->dev,
"Cannot set RSS key, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
goto config_rss_aq_out;
}
if (vsi->type == I40E_VSI_MAIN)
pf_lut = true;
ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
vsi->rss_table_size);
if (ret)
dev_info(&pf->pdev->dev,
"Cannot set RSS lut, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
config_rss_aq_out:
kfree(rss_lut);
return ret;
}
/**
* i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
* @vsi: VSI structure
**/
static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
{
u8 seed[I40E_HKEY_ARRAY_SIZE];
struct i40e_pf *pf = vsi->back;
u8 *lut;
int ret;
if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
return 0;
lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
if (!lut)
return -ENOMEM;
i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
kfree(lut);
return ret;
}
/**
* i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
* @vsi: Pointer to vsi structure
* @seed: Buffter to store the hash keys
* @lut: Buffer to store the lookup table entries
* @lut_size: Size of buffer to store the lookup table entries
*
* Return 0 on success, negative on failure
*/
static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
u8 *lut, u16 lut_size)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
int ret = 0;
if (seed) {
ret = i40e_aq_get_rss_key(hw, vsi->id,
(struct i40e_aqc_get_set_rss_key_data *)seed);
if (ret) {
dev_info(&pf->pdev->dev,
"Cannot get RSS key, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
return ret;
}
}
if (lut) {
bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
if (ret) {
dev_info(&pf->pdev->dev,
"Cannot get RSS lut, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
return ret;
}
}
return ret;
}
/**
* i40e_config_rss_reg - Configure RSS keys and lut by writing registers
* @vsi: Pointer to vsi structure
* @seed: RSS hash seed
* @lut: Lookup table
* @lut_size: Lookup table size
*
* Returns 0 on success, negative on failure
**/
static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
const u8 *lut, u16 lut_size)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
u16 vf_id = vsi->vf_id;
u8 i;
/* Fill out hash function seed */
if (seed) {
u32 *seed_dw = (u32 *)seed;
if (vsi->type == I40E_VSI_MAIN) {
for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
seed_dw[i]);
} else if (vsi->type == I40E_VSI_SRIOV) {
for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
i40e_write_rx_ctl(hw,
I40E_VFQF_HKEY1(i, vf_id),
seed_dw[i]);
} else {
dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
}
}
if (lut) {
u32 *lut_dw = (u32 *)lut;
if (vsi->type == I40E_VSI_MAIN) {
if (lut_size != I40E_HLUT_ARRAY_SIZE)
return -EINVAL;
for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
} else if (vsi->type == I40E_VSI_SRIOV) {
if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
return -EINVAL;
for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
i40e_write_rx_ctl(hw,
I40E_VFQF_HLUT1(i, vf_id),
lut_dw[i]);
} else {
dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
}
}
i40e_flush(hw);
return 0;
}
/**
* i40e_get_rss_reg - Get the RSS keys and lut by reading registers
* @vsi: Pointer to VSI structure
* @seed: Buffer to store the keys
* @lut: Buffer to store the lookup table entries
* @lut_size: Size of buffer to store the lookup table entries
*
* Returns 0 on success, negative on failure
*/
static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
u8 *lut, u16 lut_size)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
u16 i;
if (seed) {
u32 *seed_dw = (u32 *)seed;
for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
}
if (lut) {
u32 *lut_dw = (u32 *)lut;
if (lut_size != I40E_HLUT_ARRAY_SIZE)
return -EINVAL;
for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
}
return 0;
}
/**
* i40e_config_rss - Configure RSS keys and lut
* @vsi: Pointer to VSI structure
* @seed: RSS hash seed
* @lut: Lookup table
* @lut_size: Lookup table size
*
* Returns 0 on success, negative on failure
*/
int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
{
struct i40e_pf *pf = vsi->back;
if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
return i40e_config_rss_aq(vsi, seed, lut, lut_size);
else
return i40e_config_rss_reg(vsi, seed, lut, lut_size);
}
/**
* i40e_get_rss - Get RSS keys and lut
* @vsi: Pointer to VSI structure
* @seed: Buffer to store the keys
* @lut: Buffer to store the lookup table entries
* lut_size: Size of buffer to store the lookup table entries
*
* Returns 0 on success, negative on failure
*/
int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
{
struct i40e_pf *pf = vsi->back;
if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
return i40e_get_rss_aq(vsi, seed, lut, lut_size);
else
return i40e_get_rss_reg(vsi, seed, lut, lut_size);
}
/**
* i40e_fill_rss_lut - Fill the RSS lookup table with default values
* @pf: Pointer to board private structure
* @lut: Lookup table
* @rss_table_size: Lookup table size
* @rss_size: Range of queue number for hashing
*/
static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
u16 rss_table_size, u16 rss_size)
{
u16 i;
for (i = 0; i < rss_table_size; i++)
lut[i] = i % rss_size;
}
/**
* i40e_pf_config_rss - Prepare for RSS if used
* @pf: board private structure
**/
static int i40e_pf_config_rss(struct i40e_pf *pf)
{
struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
u8 seed[I40E_HKEY_ARRAY_SIZE];
u8 *lut;
struct i40e_hw *hw = &pf->hw;
u32 reg_val;
u64 hena;
int ret;
/* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
hena |= i40e_pf_get_default_rss_hena(pf);
i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
/* Determine the RSS table size based on the hardware capabilities */
reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
reg_val = (pf->rss_table_size == 512) ?
(reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
(reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
/* Determine the RSS size of the VSI */
if (!vsi->rss_size)
vsi->rss_size = min_t(int, pf->alloc_rss_size,
vsi->num_queue_pairs);
lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
if (!lut)
return -ENOMEM;
/* Use user configured lut if there is one, otherwise use default */
if (vsi->rss_lut_user)
memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
else
i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
/* Use user configured hash key if there is one, otherwise
* use default.
*/
if (vsi->rss_hkey_user)
memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
else
netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
kfree(lut);
return ret;
}
/**
* i40e_reconfig_rss_queues - change number of queues for rss and rebuild
* @pf: board private structure
* @queue_count: the requested queue count for rss.
*
* returns 0 if rss is not enabled, if enabled returns the final rss queue
* count which may be different from the requested queue count.
**/
int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
{
struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
int new_rss_size;
if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
return 0;
new_rss_size = min_t(int, queue_count, pf->rss_size_max);
if (queue_count != vsi->num_queue_pairs) {
vsi->req_queue_pairs = queue_count;
i40e_prep_for_reset(pf);
pf->alloc_rss_size = new_rss_size;
i40e_reset_and_rebuild(pf, true);
/* Discard the user configured hash keys and lut, if less
* queues are enabled.
*/
if (queue_count < vsi->rss_size) {
i40e_clear_rss_config_user(vsi);
dev_dbg(&pf->pdev->dev,
"discard user configured hash keys and lut\n");
}
/* Reset vsi->rss_size, as number of enabled queues changed */
vsi->rss_size = min_t(int, pf->alloc_rss_size,
vsi->num_queue_pairs);
i40e_pf_config_rss(pf);
}
dev_info(&pf->pdev->dev, "RSS count/HW max RSS count: %d/%d\n",
pf->alloc_rss_size, pf->rss_size_max);
return pf->alloc_rss_size;
}
/**
* i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
* @pf: board private structure
**/
i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
{
i40e_status status;
bool min_valid, max_valid;
u32 max_bw, min_bw;
status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
&min_valid, &max_valid);
if (!status) {
if (min_valid)
pf->npar_min_bw = min_bw;
if (max_valid)
pf->npar_max_bw = max_bw;
}
return status;
}
/**
* i40e_set_npar_bw_setting - Set BW settings for this PF partition
* @pf: board private structure
**/
i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
{
struct i40e_aqc_configure_partition_bw_data bw_data;
i40e_status status;
/* Set the valid bit for this PF */
bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
/* Set the new bandwidths */
status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
return status;
}
/**
* i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
* @pf: board private structure
**/
i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
{
/* Commit temporary BW setting to permanent NVM image */
enum i40e_admin_queue_err last_aq_status;
i40e_status ret;
u16 nvm_word;
if (pf->hw.partition_id != 1) {
dev_info(&pf->pdev->dev,
"Commit BW only works on partition 1! This is partition %d",
pf->hw.partition_id);
ret = I40E_NOT_SUPPORTED;
goto bw_commit_out;
}
/* Acquire NVM for read access */
ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
last_aq_status = pf->hw.aq.asq_last_status;
if (ret) {
dev_info(&pf->pdev->dev,
"Cannot acquire NVM for read access, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, last_aq_status));
goto bw_commit_out;
}
/* Read word 0x10 of NVM - SW compatibility word 1 */
ret = i40e_aq_read_nvm(&pf->hw,
I40E_SR_NVM_CONTROL_WORD,
0x10, sizeof(nvm_word), &nvm_word,
false, NULL);
/* Save off last admin queue command status before releasing
* the NVM
*/
last_aq_status = pf->hw.aq.asq_last_status;
i40e_release_nvm(&pf->hw);
if (ret) {
dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, last_aq_status));
goto bw_commit_out;
}
/* Wait a bit for NVM release to complete */
msleep(50);
/* Acquire NVM for write access */
ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
last_aq_status = pf->hw.aq.asq_last_status;
if (ret) {
dev_info(&pf->pdev->dev,
"Cannot acquire NVM for write access, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, last_aq_status));
goto bw_commit_out;
}
/* Write it back out unchanged to initiate update NVM,
* which will force a write of the shadow (alt) RAM to
* the NVM - thus storing the bandwidth values permanently.
*/
ret = i40e_aq_update_nvm(&pf->hw,
I40E_SR_NVM_CONTROL_WORD,
0x10, sizeof(nvm_word),
&nvm_word, true, NULL);
/* Save off last admin queue command status before releasing
* the NVM
*/
last_aq_status = pf->hw.aq.asq_last_status;
i40e_release_nvm(&pf->hw);
if (ret)
dev_info(&pf->pdev->dev,
"BW settings NOT SAVED, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, last_aq_status));
bw_commit_out:
return ret;
}
/**
* i40e_sw_init - Initialize general software structures (struct i40e_pf)
* @pf: board private structure to initialize
*
* i40e_sw_init initializes the Adapter private data structure.
* Fields are initialized based on PCI device information and
* OS network device settings (MTU size).
**/
static int i40e_sw_init(struct i40e_pf *pf)
{
int err = 0;
int size;
pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
(NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
if (I40E_DEBUG_USER & debug)
pf->hw.debug_mask = debug;
pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
I40E_DEFAULT_MSG_ENABLE);
}
/* Set default capability flags */
pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
I40E_FLAG_MSI_ENABLED |
I40E_FLAG_MSIX_ENABLED;
if (iommu_present(&pci_bus_type))
pf->flags |= I40E_FLAG_RX_PS_ENABLED;
else
pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
/* Set default ITR */
pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
/* Depending on PF configurations, it is possible that the RSS
* maximum might end up larger than the available queues
*/
pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
pf->alloc_rss_size = 1;
pf->rss_table_size = pf->hw.func_caps.rss_table_size;
pf->rss_size_max = min_t(int, pf->rss_size_max,
pf->hw.func_caps.num_tx_qp);
if (pf->hw.func_caps.rss) {
pf->flags |= I40E_FLAG_RSS_ENABLED;
pf->alloc_rss_size = min_t(int, pf->rss_size_max,
num_online_cpus());
}
/* MFP mode enabled */
if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
pf->flags |= I40E_FLAG_MFP_ENABLED;
dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
if (i40e_get_npar_bw_setting(pf))
dev_warn(&pf->pdev->dev,
"Could not get NPAR bw settings\n");
else
dev_info(&pf->pdev->dev,
"Min BW = %8.8x, Max BW = %8.8x\n",
pf->npar_min_bw, pf->npar_max_bw);
}
/* FW/NVM is not yet fixed in this regard */
if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
(pf->hw.func_caps.fd_filters_best_effort > 0)) {
pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
if (pf->flags & I40E_FLAG_MFP_ENABLED &&
pf->hw.num_partitions > 1)
dev_info(&pf->pdev->dev,
"Flow Director Sideband mode Disabled in MFP mode\n");
else
pf->flags |= I40E_FLAG_FD_SB_ENABLED;
pf->fdir_pf_filter_count =
pf->hw.func_caps.fd_filters_guaranteed;
pf->hw.fdir_shared_filter_count =
pf->hw.func_caps.fd_filters_best_effort;
}
if (i40e_is_mac_710(&pf->hw) &&
(((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
(pf->hw.aq.fw_maj_ver < 4))) {
pf->flags |= I40E_FLAG_RESTART_AUTONEG;
/* No DCB support for FW < v4.33 */
pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
}
/* Disable FW LLDP if FW < v4.3 */
if (i40e_is_mac_710(&pf->hw) &&
(((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
(pf->hw.aq.fw_maj_ver < 4)))
pf->flags |= I40E_FLAG_STOP_FW_LLDP;
/* Use the FW Set LLDP MIB API if FW > v4.40 */
if (i40e_is_mac_710(&pf->hw) &&
(((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
(pf->hw.aq.fw_maj_ver >= 5)))
pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
if (pf->hw.func_caps.vmdq) {
pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
pf->flags |= I40E_FLAG_VMDQ_ENABLED;
pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
}
if (pf->hw.func_caps.iwarp) {
pf->flags |= I40E_FLAG_IWARP_ENABLED;
/* IWARP needs one extra vector for CQP just like MISC.*/
pf->num_iwarp_msix = (int)num_online_cpus() + 1;
}
#ifdef I40E_FCOE
i40e_init_pf_fcoe(pf);
#endif /* I40E_FCOE */
#ifdef CONFIG_PCI_IOV
if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
pf->flags |= I40E_FLAG_SRIOV_ENABLED;
pf->num_req_vfs = min_t(int,
pf->hw.func_caps.num_vfs,
I40E_MAX_VF_COUNT);
}
#endif /* CONFIG_PCI_IOV */
if (pf->hw.mac.type == I40E_MAC_X722) {
pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
I40E_FLAG_128_QP_RSS_CAPABLE |
I40E_FLAG_HW_ATR_EVICT_CAPABLE |
I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
I40E_FLAG_WB_ON_ITR_CAPABLE |
I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
I40E_FLAG_NO_PCI_LINK_CHECK |
I40E_FLAG_100M_SGMII_CAPABLE |
I40E_FLAG_USE_SET_LLDP_MIB |
I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
} else if ((pf->hw.aq.api_maj_ver > 1) ||
((pf->hw.aq.api_maj_ver == 1) &&
(pf->hw.aq.api_min_ver > 4))) {
/* Supported in FW API version higher than 1.4 */
pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
} else {
pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
}
pf->eeprom_version = 0xDEAD;
pf->lan_veb = I40E_NO_VEB;
pf->lan_vsi = I40E_NO_VSI;
/* By default FW has this off for performance reasons */
pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
/* set up queue assignment tracking */
size = sizeof(struct i40e_lump_tracking)
+ (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
pf->qp_pile = kzalloc(size, GFP_KERNEL);
if (!pf->qp_pile) {
err = -ENOMEM;
goto sw_init_done;
}
pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
pf->qp_pile->search_hint = 0;
pf->tx_timeout_recovery_level = 1;
mutex_init(&pf->switch_mutex);
/* If NPAR is enabled nudge the Tx scheduler */
if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
i40e_set_npar_bw_setting(pf);
sw_init_done:
return err;
}
/**
* i40e_set_ntuple - set the ntuple feature flag and take action
* @pf: board private structure to initialize
* @features: the feature set that the stack is suggesting
*
* returns a bool to indicate if reset needs to happen
**/
bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
{
bool need_reset = false;
/* Check if Flow Director n-tuple support was enabled or disabled. If
* the state changed, we need to reset.
*/
if (features & NETIF_F_NTUPLE) {
/* Enable filters and mark for reset */
if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
need_reset = true;
pf->flags |= I40E_FLAG_FD_SB_ENABLED;
} else {
/* turn off filters, mark for reset and clear SW filter list */
if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
need_reset = true;
i40e_fdir_filter_exit(pf);
}
pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
/* reset fd counters */
pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
pf->fdir_pf_active_filters = 0;
pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
if (I40E_DEBUG_FD & pf->hw.debug_mask)
dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
/* if ATR was auto disabled it can be re-enabled. */
if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
}
return need_reset;
}
/**
* i40e_set_features - set the netdev feature flags
* @netdev: ptr to the netdev being adjusted
* @features: the feature set that the stack is suggesting
**/
static int i40e_set_features(struct net_device *netdev,
netdev_features_t features)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
bool need_reset;
if (features & NETIF_F_HW_VLAN_CTAG_RX)
i40e_vlan_stripping_enable(vsi);
else
i40e_vlan_stripping_disable(vsi);
need_reset = i40e_set_ntuple(pf, features);
if (need_reset)
i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
return 0;
}
#if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
/**
* i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
* @pf: board private structure
* @port: The UDP port to look up
*
* Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
**/
static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
{
u8 i;
for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
if (pf->udp_ports[i].index == port)
return i;
}
return i;
}
#endif
#if IS_ENABLED(CONFIG_VXLAN)
/**
* i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
* @netdev: This physical port's netdev
* @sa_family: Socket Family that VXLAN is notifying us about
* @port: New UDP port number that VXLAN started listening to
**/
static void i40e_add_vxlan_port(struct net_device *netdev,
sa_family_t sa_family, __be16 port)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u8 next_idx;
u8 idx;
idx = i40e_get_udp_port_idx(pf, port);
/* Check if port already exists */
if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
netdev_info(netdev, "vxlan port %d already offloaded\n",
ntohs(port));
return;
}
/* Now check if there is space to add the new port */
next_idx = i40e_get_udp_port_idx(pf, 0);
if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
ntohs(port));
return;
}
/* New port: add it and mark its index in the bitmap */
pf->udp_ports[next_idx].index = port;
pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
pf->pending_udp_bitmap |= BIT_ULL(next_idx);
pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
}
/**
* i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
* @netdev: This physical port's netdev
* @sa_family: Socket Family that VXLAN is notifying us about
* @port: UDP port number that VXLAN stopped listening to
**/
static void i40e_del_vxlan_port(struct net_device *netdev,
sa_family_t sa_family, __be16 port)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u8 idx;
idx = i40e_get_udp_port_idx(pf, port);
/* Check if port already exists */
if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
/* if port exists, set it to 0 (mark for deletion)
* and make it pending
*/
pf->udp_ports[idx].index = 0;
pf->pending_udp_bitmap |= BIT_ULL(idx);
pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
} else {
netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
ntohs(port));
}
}
#endif
#if IS_ENABLED(CONFIG_GENEVE)
/**
* i40e_add_geneve_port - Get notifications about GENEVE ports that come up
* @netdev: This physical port's netdev
* @sa_family: Socket Family that GENEVE is notifying us about
* @port: New UDP port number that GENEVE started listening to
**/
static void i40e_add_geneve_port(struct net_device *netdev,
sa_family_t sa_family, __be16 port)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u8 next_idx;
u8 idx;
if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
return;
idx = i40e_get_udp_port_idx(pf, port);
/* Check if port already exists */
if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
netdev_info(netdev, "udp port %d already offloaded\n",
ntohs(port));
return;
}
/* Now check if there is space to add the new port */
next_idx = i40e_get_udp_port_idx(pf, 0);
if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
netdev_info(netdev, "maximum number of UDP ports reached, not adding port %d\n",
ntohs(port));
return;
}
/* New port: add it and mark its index in the bitmap */
pf->udp_ports[next_idx].index = port;
pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
pf->pending_udp_bitmap |= BIT_ULL(next_idx);
pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
dev_info(&pf->pdev->dev, "adding geneve port %d\n", ntohs(port));
}
/**
* i40e_del_geneve_port - Get notifications about GENEVE ports that go away
* @netdev: This physical port's netdev
* @sa_family: Socket Family that GENEVE is notifying us about
* @port: UDP port number that GENEVE stopped listening to
**/
static void i40e_del_geneve_port(struct net_device *netdev,
sa_family_t sa_family, __be16 port)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u8 idx;
if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
return;
idx = i40e_get_udp_port_idx(pf, port);
/* Check if port already exists */
if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
/* if port exists, set it to 0 (mark for deletion)
* and make it pending
*/
pf->udp_ports[idx].index = 0;
pf->pending_udp_bitmap |= BIT_ULL(idx);
pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
dev_info(&pf->pdev->dev, "deleting geneve port %d\n",
ntohs(port));
} else {
netdev_warn(netdev, "geneve port %d was not found, not deleting\n",
ntohs(port));
}
}
#endif
static int i40e_get_phys_port_id(struct net_device *netdev,
struct netdev_phys_item_id *ppid)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
struct i40e_hw *hw = &pf->hw;
if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
return -EOPNOTSUPP;
ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
return 0;
}
/**
* i40e_ndo_fdb_add - add an entry to the hardware database
* @ndm: the input from the stack
* @tb: pointer to array of nladdr (unused)
* @dev: the net device pointer
* @addr: the MAC address entry being added
* @flags: instructions from stack about fdb operation
*/
static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr, u16 vid,
u16 flags)
{
struct i40e_netdev_priv *np = netdev_priv(dev);
struct i40e_pf *pf = np->vsi->back;
int err = 0;
if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
return -EOPNOTSUPP;
if (vid) {
pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
return -EINVAL;
}
/* Hardware does not support aging addresses so if a
* ndm_state is given only allow permanent addresses
*/
if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
netdev_info(dev, "FDB only supports static addresses\n");
return -EINVAL;
}
if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
err = dev_uc_add_excl(dev, addr);
else if (is_multicast_ether_addr(addr))
err = dev_mc_add_excl(dev, addr);
else
err = -EINVAL;
/* Only return duplicate errors if NLM_F_EXCL is set */
if (err == -EEXIST && !(flags & NLM_F_EXCL))
err = 0;
return err;
}
/**
* i40e_ndo_bridge_setlink - Set the hardware bridge mode
* @dev: the netdev being configured
* @nlh: RTNL message
*
* Inserts a new hardware bridge if not already created and
* enables the bridging mode requested (VEB or VEPA). If the
* hardware bridge has already been inserted and the request
* is to change the mode then that requires a PF reset to
* allow rebuild of the components with required hardware
* bridge mode enabled.
**/
static int i40e_ndo_bridge_setlink(struct net_device *dev,
struct nlmsghdr *nlh,
u16 flags)
{
struct i40e_netdev_priv *np = netdev_priv(dev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_veb *veb = NULL;
struct nlattr *attr, *br_spec;
int i, rem;
/* Only for PF VSI for now */
if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
return -EOPNOTSUPP;
/* Find the HW bridge for PF VSI */
for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
veb = pf->veb[i];
}
br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
nla_for_each_nested(attr, br_spec, rem) {
__u16 mode;
if (nla_type(attr) != IFLA_BRIDGE_MODE)
continue;
mode = nla_get_u16(attr);
if ((mode != BRIDGE_MODE_VEPA) &&
(mode != BRIDGE_MODE_VEB))
return -EINVAL;
/* Insert a new HW bridge */
if (!veb) {
veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
vsi->tc_config.enabled_tc);
if (veb) {
veb->bridge_mode = mode;
i40e_config_bridge_mode(veb);
} else {
/* No Bridge HW offload available */
return -ENOENT;
}
break;
} else if (mode != veb->bridge_mode) {
/* Existing HW bridge but different mode needs reset */
veb->bridge_mode = mode;
/* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
if (mode == BRIDGE_MODE_VEB)
pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
else
pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
break;
}
}
return 0;
}
/**
* i40e_ndo_bridge_getlink - Get the hardware bridge mode
* @skb: skb buff
* @pid: process id
* @seq: RTNL message seq #
* @dev: the netdev being configured
* @filter_mask: unused
* @nlflags: netlink flags passed in
*
* Return the mode in which the hardware bridge is operating in
* i.e VEB or VEPA.
**/
static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
struct net_device *dev,
u32 __always_unused filter_mask,
int nlflags)
{
struct i40e_netdev_priv *np = netdev_priv(dev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_veb *veb = NULL;
int i;
/* Only for PF VSI for now */
if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
return -EOPNOTSUPP;
/* Find the HW bridge for the PF VSI */
for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
veb = pf->veb[i];
}
if (!veb)
return 0;
return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
nlflags, 0, 0, filter_mask, NULL);
}
/* Hardware supports L4 tunnel length of 128B (=2^7) which includes
* inner mac plus all inner ethertypes.
*/
#define I40E_MAX_TUNNEL_HDR_LEN 128
/**
* i40e_features_check - Validate encapsulated packet conforms to limits
* @skb: skb buff
* @dev: This physical port's netdev
* @features: Offload features that the stack believes apply
**/
static netdev_features_t i40e_features_check(struct sk_buff *skb,
struct net_device *dev,
netdev_features_t features)
{
if (skb->encapsulation &&
((skb_inner_network_header(skb) - skb_transport_header(skb)) >
I40E_MAX_TUNNEL_HDR_LEN))
return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
return features;
}
static const struct net_device_ops i40e_netdev_ops = {
.ndo_open = i40e_open,
.ndo_stop = i40e_close,
.ndo_start_xmit = i40e_lan_xmit_frame,
.ndo_get_stats64 = i40e_get_netdev_stats_struct,
.ndo_set_rx_mode = i40e_set_rx_mode,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = i40e_set_mac,
.ndo_change_mtu = i40e_change_mtu,
.ndo_do_ioctl = i40e_ioctl,
.ndo_tx_timeout = i40e_tx_timeout,
.ndo_vlan_rx_add_vid = i40e_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = i40e_vlan_rx_kill_vid,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = i40e_netpoll,
#endif
.ndo_setup_tc = __i40e_setup_tc,
#ifdef I40E_FCOE
.ndo_fcoe_enable = i40e_fcoe_enable,
.ndo_fcoe_disable = i40e_fcoe_disable,
#endif
.ndo_set_features = i40e_set_features,
.ndo_set_vf_mac = i40e_ndo_set_vf_mac,
.ndo_set_vf_vlan = i40e_ndo_set_vf_port_vlan,
.ndo_set_vf_rate = i40e_ndo_set_vf_bw,
.ndo_get_vf_config = i40e_ndo_get_vf_config,
.ndo_set_vf_link_state = i40e_ndo_set_vf_link_state,
.ndo_set_vf_spoofchk = i40e_ndo_set_vf_spoofchk,
.ndo_set_vf_trust = i40e_ndo_set_vf_trust,
#if IS_ENABLED(CONFIG_VXLAN)
.ndo_add_vxlan_port = i40e_add_vxlan_port,
.ndo_del_vxlan_port = i40e_del_vxlan_port,
#endif
#if IS_ENABLED(CONFIG_GENEVE)
.ndo_add_geneve_port = i40e_add_geneve_port,
.ndo_del_geneve_port = i40e_del_geneve_port,
#endif
.ndo_get_phys_port_id = i40e_get_phys_port_id,
.ndo_fdb_add = i40e_ndo_fdb_add,
.ndo_features_check = i40e_features_check,
.ndo_bridge_getlink = i40e_ndo_bridge_getlink,
.ndo_bridge_setlink = i40e_ndo_bridge_setlink,
};
/**
* i40e_config_netdev - Setup the netdev flags
* @vsi: the VSI being configured
*
* Returns 0 on success, negative value on failure
**/
static int i40e_config_netdev(struct i40e_vsi *vsi)
{
u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
struct i40e_netdev_priv *np;
struct net_device *netdev;
u8 mac_addr[ETH_ALEN];
int etherdev_size;
etherdev_size = sizeof(struct i40e_netdev_priv);
netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
if (!netdev)
return -ENOMEM;
vsi->netdev = netdev;
np = netdev_priv(netdev);
np->vsi = vsi;
netdev->hw_enc_features |= NETIF_F_SG |
NETIF_F_IP_CSUM |
NETIF_F_IPV6_CSUM |
NETIF_F_HIGHDMA |
NETIF_F_SOFT_FEATURES |
NETIF_F_TSO |
NETIF_F_TSO_ECN |
NETIF_F_TSO6 |
NETIF_F_GSO_GRE |
NETIF_F_GSO_IPIP |
NETIF_F_GSO_SIT |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_SCTP_CRC |
NETIF_F_RXHASH |
NETIF_F_RXCSUM |
0;
if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
netdev->hw_enc_features ^= NETIF_F_GSO_UDP_TUNNEL_CSUM;
/* record features VLANs can make use of */
netdev->vlan_features |= netdev->hw_enc_features;
if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
netdev->hw_features |= NETIF_F_NTUPLE;
netdev->hw_features |= netdev->hw_enc_features |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX;
netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
if (vsi->type == I40E_VSI_MAIN) {
SET_NETDEV_DEV(netdev, &pf->pdev->dev);
ether_addr_copy(mac_addr, hw->mac.perm_addr);
/* The following steps are necessary to prevent reception
* of tagged packets - some older NVM configurations load a
* default a MAC-VLAN filter that accepts any tagged packet
* which must be replaced by a normal filter.
*/
if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
spin_lock_bh(&vsi->mac_filter_list_lock);
i40e_add_filter(vsi, mac_addr,
I40E_VLAN_ANY, false, true);
spin_unlock_bh(&vsi->mac_filter_list_lock);
}
} else if ((pf->hw.aq.api_maj_ver > 1) ||
((pf->hw.aq.api_maj_ver == 1) &&
(pf->hw.aq.api_min_ver > 4))) {
/* Supported in FW API version higher than 1.4 */
pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
} else {
/* relate the VSI_VMDQ name to the VSI_MAIN name */
snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
pf->vsi[pf->lan_vsi]->netdev->name);
random_ether_addr(mac_addr);
spin_lock_bh(&vsi->mac_filter_list_lock);
i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
spin_unlock_bh(&vsi->mac_filter_list_lock);
}
spin_lock_bh(&vsi->mac_filter_list_lock);
i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
spin_unlock_bh(&vsi->mac_filter_list_lock);
ether_addr_copy(netdev->dev_addr, mac_addr);
ether_addr_copy(netdev->perm_addr, mac_addr);
netdev->priv_flags |= IFF_UNICAST_FLT;
netdev->priv_flags |= IFF_SUPP_NOFCS;
/* Setup netdev TC information */
i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
netdev->netdev_ops = &i40e_netdev_ops;
netdev->watchdog_timeo = 5 * HZ;
i40e_set_ethtool_ops(netdev);
#ifdef I40E_FCOE
i40e_fcoe_config_netdev(netdev, vsi);
#endif
return 0;
}
/**
* i40e_vsi_delete - Delete a VSI from the switch
* @vsi: the VSI being removed
*
* Returns 0 on success, negative value on failure
**/
static void i40e_vsi_delete(struct i40e_vsi *vsi)
{
/* remove default VSI is not allowed */
if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
return;
i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
}
/**
* i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
* @vsi: the VSI being queried
*
* Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
**/
int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
{
struct i40e_veb *veb;
struct i40e_pf *pf = vsi->back;
/* Uplink is not a bridge so default to VEB */
if (vsi->veb_idx == I40E_NO_VEB)
return 1;
veb = pf->veb[vsi->veb_idx];
if (!veb) {
dev_info(&pf->pdev->dev,
"There is no veb associated with the bridge\n");
return -ENOENT;
}
/* Uplink is a bridge in VEPA mode */
if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
return 0;
} else {
/* Uplink is a bridge in VEB mode */
return 1;
}
/* VEPA is now default bridge, so return 0 */
return 0;
}
/**
* i40e_add_vsi - Add a VSI to the switch
* @vsi: the VSI being configured
*
* This initializes a VSI context depending on the VSI type to be added and
* passes it down to the add_vsi aq command.
**/
static int i40e_add_vsi(struct i40e_vsi *vsi)
{
int ret = -ENODEV;
u8 laa_macaddr[ETH_ALEN];
bool found_laa_mac_filter = false;
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
struct i40e_vsi_context ctxt;
struct i40e_mac_filter *f, *ftmp;
u8 enabled_tc = 0x1; /* TC0 enabled */
int f_count = 0;
memset(&ctxt, 0, sizeof(ctxt));
switch (vsi->type) {
case I40E_VSI_MAIN:
/* The PF's main VSI is already setup as part of the
* device initialization, so we'll not bother with
* the add_vsi call, but we will retrieve the current
* VSI context.
*/
ctxt.seid = pf->main_vsi_seid;
ctxt.pf_num = pf->hw.pf_id;
ctxt.vf_num = 0;
ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
ctxt.flags = I40E_AQ_VSI_TYPE_PF;
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't get PF vsi config, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
return -ENOENT;
}
vsi->info = ctxt.info;
vsi->info.valid_sections = 0;
vsi->seid = ctxt.seid;
vsi->id = ctxt.vsi_number;
enabled_tc = i40e_pf_get_tc_map(pf);
/* MFP mode setup queue map and update VSI */
if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
!(pf->hw.func_caps.iscsi)) { /* NIC type PF */
memset(&ctxt, 0, sizeof(ctxt));
ctxt.seid = pf->main_vsi_seid;
ctxt.pf_num = pf->hw.pf_id;
ctxt.vf_num = 0;
i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"update vsi failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
ret = -ENOENT;
goto err;
}
/* update the local VSI info queue map */
i40e_vsi_update_queue_map(vsi, &ctxt);
vsi->info.valid_sections = 0;
} else {
/* Default/Main VSI is only enabled for TC0
* reconfigure it to enable all TCs that are
* available on the port in SFP mode.
* For MFP case the iSCSI PF would use this
* flow to enable LAN+iSCSI TC.
*/
ret = i40e_vsi_config_tc(vsi, enabled_tc);
if (ret) {
dev_info(&pf->pdev->dev,
"failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
enabled_tc,
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
ret = -ENOENT;
}
}
break;
case I40E_VSI_FDIR:
ctxt.pf_num = hw->pf_id;
ctxt.vf_num = 0;
ctxt.uplink_seid = vsi->uplink_seid;
ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
ctxt.flags = I40E_AQ_VSI_TYPE_PF;
if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
(i40e_is_vsi_uplink_mode_veb(vsi))) {
ctxt.info.valid_sections |=
cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
ctxt.info.switch_id =
cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
}
i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
break;
case I40E_VSI_VMDQ2:
ctxt.pf_num = hw->pf_id;
ctxt.vf_num = 0;
ctxt.uplink_seid = vsi->uplink_seid;
ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
/* This VSI is connected to VEB so the switch_id
* should be set to zero by default.
*/
if (i40e_is_vsi_uplink_mode_veb(vsi)) {
ctxt.info.valid_sections |=
cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
ctxt.info.switch_id =
cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
}
/* Setup the VSI tx/rx queue map for TC0 only for now */
i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
break;
case I40E_VSI_SRIOV:
ctxt.pf_num = hw->pf_id;
ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
ctxt.uplink_seid = vsi->uplink_seid;
ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
ctxt.flags = I40E_AQ_VSI_TYPE_VF;
/* This VSI is connected to VEB so the switch_id
* should be set to zero by default.
*/
if (i40e_is_vsi_uplink_mode_veb(vsi)) {
ctxt.info.valid_sections |=
cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
ctxt.info.switch_id =
cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
}
if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
ctxt.info.valid_sections |=
cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
ctxt.info.queueing_opt_flags |=
I40E_AQ_VSI_QUE_OPT_TCP_ENA;
}
ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
if (pf->vf[vsi->vf_id].spoofchk) {
ctxt.info.valid_sections |=
cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
ctxt.info.sec_flags |=
(I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
}
/* Setup the VSI tx/rx queue map for TC0 only for now */
i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
break;
#ifdef I40E_FCOE
case I40E_VSI_FCOE:
ret = i40e_fcoe_vsi_init(vsi, &ctxt);
if (ret) {
dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
return ret;
}
break;
#endif /* I40E_FCOE */
case I40E_VSI_IWARP:
/* send down message to iWARP */
break;
default:
return -ENODEV;
}
if (vsi->type != I40E_VSI_MAIN) {
ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"add vsi failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
ret = -ENOENT;
goto err;
}
vsi->info = ctxt.info;
vsi->info.valid_sections = 0;
vsi->seid = ctxt.seid;
vsi->id = ctxt.vsi_number;
}
spin_lock_bh(&vsi->mac_filter_list_lock);
/* If macvlan filters already exist, force them to get loaded */
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
f->changed = true;
f_count++;
/* Expected to have only one MAC filter entry for LAA in list */
if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
ether_addr_copy(laa_macaddr, f->macaddr);
found_laa_mac_filter = true;
}
}
spin_unlock_bh(&vsi->mac_filter_list_lock);
if (found_laa_mac_filter) {
struct i40e_aqc_remove_macvlan_element_data element;
memset(&element, 0, sizeof(element));
ether_addr_copy(element.mac_addr, laa_macaddr);
element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
ret = i40e_aq_remove_macvlan(hw, vsi->seid,
&element, 1, NULL);
if (ret) {
/* some older FW has a different default */
element.flags |=
I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
i40e_aq_remove_macvlan(hw, vsi->seid,
&element, 1, NULL);
}
i40e_aq_mac_address_write(hw,
I40E_AQC_WRITE_TYPE_LAA_WOL,
laa_macaddr, NULL);
}
if (f_count) {
vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
pf->flags |= I40E_FLAG_FILTER_SYNC;
}
/* Update VSI BW information */
ret = i40e_vsi_get_bw_info(vsi);
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't get vsi bw info, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
/* VSI is already added so not tearing that up */
ret = 0;
}
err:
return ret;
}
/**
* i40e_vsi_release - Delete a VSI and free its resources
* @vsi: the VSI being removed
*
* Returns 0 on success or < 0 on error
**/
int i40e_vsi_release(struct i40e_vsi *vsi)
{
struct i40e_mac_filter *f, *ftmp;
struct i40e_veb *veb = NULL;
struct i40e_pf *pf;
u16 uplink_seid;
int i, n;
pf = vsi->back;
/* release of a VEB-owner or last VSI is not allowed */
if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
vsi->seid, vsi->uplink_seid);
return -ENODEV;
}
if (vsi == pf->vsi[pf->lan_vsi] &&
!test_bit(__I40E_DOWN, &pf->state)) {
dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
return -ENODEV;
}
uplink_seid = vsi->uplink_seid;
if (vsi->type != I40E_VSI_SRIOV) {
if (vsi->netdev_registered) {
vsi->netdev_registered = false;
if (vsi->netdev) {
/* results in a call to i40e_close() */
unregister_netdev(vsi->netdev);
}
} else {
i40e_vsi_close(vsi);
}
i40e_vsi_disable_irq(vsi);
}
spin_lock_bh(&vsi->mac_filter_list_lock);
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
i40e_del_filter(vsi, f->macaddr, f->vlan,
f->is_vf, f->is_netdev);
spin_unlock_bh(&vsi->mac_filter_list_lock);
i40e_sync_vsi_filters(vsi);
i40e_vsi_delete(vsi);
i40e_vsi_free_q_vectors(vsi);
if (vsi->netdev) {
free_netdev(vsi->netdev);
vsi->netdev = NULL;
}
i40e_vsi_clear_rings(vsi);
i40e_vsi_clear(vsi);
/* If this was the last thing on the VEB, except for the
* controlling VSI, remove the VEB, which puts the controlling
* VSI onto the next level down in the switch.
*
* Well, okay, there's one more exception here: don't remove
* the orphan VEBs yet. We'll wait for an explicit remove request
* from up the network stack.
*/
for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
if (pf->vsi[i] &&
pf->vsi[i]->uplink_seid == uplink_seid &&
(pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
n++; /* count the VSIs */
}
}
for (i = 0; i < I40E_MAX_VEB; i++) {
if (!pf->veb[i])
continue;
if (pf->veb[i]->uplink_seid == uplink_seid)
n++; /* count the VEBs */
if (pf->veb[i]->seid == uplink_seid)
veb = pf->veb[i];
}
if (n == 0 && veb && veb->uplink_seid != 0)
i40e_veb_release(veb);
return 0;
}
/**
* i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
* @vsi: ptr to the VSI
*
* This should only be called after i40e_vsi_mem_alloc() which allocates the
* corresponding SW VSI structure and initializes num_queue_pairs for the
* newly allocated VSI.
*
* Returns 0 on success or negative on failure
**/
static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
{
int ret = -ENOENT;
struct i40e_pf *pf = vsi->back;
if (vsi->q_vectors[0]) {
dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
vsi->seid);
return -EEXIST;
}
if (vsi->base_vector) {
dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
vsi->seid, vsi->base_vector);
return -EEXIST;
}
ret = i40e_vsi_alloc_q_vectors(vsi);
if (ret) {
dev_info(&pf->pdev->dev,
"failed to allocate %d q_vector for VSI %d, ret=%d\n",
vsi->num_q_vectors, vsi->seid, ret);
vsi->num_q_vectors = 0;
goto vector_setup_out;
}
/* In Legacy mode, we do not have to get any other vector since we
* piggyback on the misc/ICR0 for queue interrupts.
*/
if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
return ret;
if (vsi->num_q_vectors)
vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
vsi->num_q_vectors, vsi->idx);
if (vsi->base_vector < 0) {
dev_info(&pf->pdev->dev,
"failed to get tracking for %d vectors for VSI %d, err=%d\n",
vsi->num_q_vectors, vsi->seid, vsi->base_vector);
i40e_vsi_free_q_vectors(vsi);
ret = -ENOENT;
goto vector_setup_out;
}
vector_setup_out:
return ret;
}
/**
* i40e_vsi_reinit_setup - return and reallocate resources for a VSI
* @vsi: pointer to the vsi.
*
* This re-allocates a vsi's queue resources.
*
* Returns pointer to the successfully allocated and configured VSI sw struct
* on success, otherwise returns NULL on failure.
**/
static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
{
struct i40e_pf *pf;
u8 enabled_tc;
int ret;
if (!vsi)
return NULL;
pf = vsi->back;
i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
i40e_vsi_clear_rings(vsi);
i40e_vsi_free_arrays(vsi, false);
i40e_set_num_rings_in_vsi(vsi);
ret = i40e_vsi_alloc_arrays(vsi, false);
if (ret)
goto err_vsi;
ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
if (ret < 0) {
dev_info(&pf->pdev->dev,
"failed to get tracking for %d queues for VSI %d err %d\n",
vsi->alloc_queue_pairs, vsi->seid, ret);
goto err_vsi;
}
vsi->base_queue = ret;
/* Update the FW view of the VSI. Force a reset of TC and queue
* layout configurations.
*/
enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
/* assign it some queues */
ret = i40e_alloc_rings(vsi);
if (ret)
goto err_rings;
/* map all of the rings to the q_vectors */
i40e_vsi_map_rings_to_vectors(vsi);
return vsi;
err_rings:
i40e_vsi_free_q_vectors(vsi);
if (vsi->netdev_registered) {
vsi->netdev_registered = false;
unregister_netdev(vsi->netdev);
free_netdev(vsi->netdev);
vsi->netdev = NULL;
}
i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
err_vsi:
i40e_vsi_clear(vsi);
return NULL;
}
/**
* i40e_macaddr_init - explicitly write the mac address filters.
*
* @vsi: pointer to the vsi.
* @macaddr: the MAC address
*
* This is needed when the macaddr has been obtained by other
* means than the default, e.g., from Open Firmware or IDPROM.
* Returns 0 on success, negative on failure
**/
static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
{
int ret;
struct i40e_aqc_add_macvlan_element_data element;
ret = i40e_aq_mac_address_write(&vsi->back->hw,
I40E_AQC_WRITE_TYPE_LAA_WOL,
macaddr, NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"Addr change for VSI failed: %d\n", ret);
return -EADDRNOTAVAIL;
}
memset(&element, 0, sizeof(element));
ether_addr_copy(element.mac_addr, macaddr);
element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"add filter failed err %s aq_err %s\n",
i40e_stat_str(&vsi->back->hw, ret),
i40e_aq_str(&vsi->back->hw,
vsi->back->hw.aq.asq_last_status));
}
return ret;
}
/**
* i40e_vsi_setup - Set up a VSI by a given type
* @pf: board private structure
* @type: VSI type
* @uplink_seid: the switch element to link to
* @param1: usage depends upon VSI type. For VF types, indicates VF id
*
* This allocates the sw VSI structure and its queue resources, then add a VSI
* to the identified VEB.
*
* Returns pointer to the successfully allocated and configure VSI sw struct on
* success, otherwise returns NULL on failure.
**/
struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
u16 uplink_seid, u32 param1)
{
struct i40e_vsi *vsi = NULL;
struct i40e_veb *veb = NULL;
int ret, i;
int v_idx;
/* The requested uplink_seid must be either
* - the PF's port seid
* no VEB is needed because this is the PF
* or this is a Flow Director special case VSI
* - seid of an existing VEB
* - seid of a VSI that owns an existing VEB
* - seid of a VSI that doesn't own a VEB
* a new VEB is created and the VSI becomes the owner
* - seid of the PF VSI, which is what creates the first VEB
* this is a special case of the previous
*
* Find which uplink_seid we were given and create a new VEB if needed
*/
for (i = 0; i < I40E_MAX_VEB; i++) {
if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
veb = pf->veb[i];
break;
}
}
if (!veb && uplink_seid != pf->mac_seid) {
for (i = 0; i < pf->num_alloc_vsi; i++) {
if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
vsi = pf->vsi[i];
break;
}
}
if (!vsi) {
dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
uplink_seid);
return NULL;
}
if (vsi->uplink_seid == pf->mac_seid)
veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
vsi->tc_config.enabled_tc);
else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
vsi->tc_config.enabled_tc);
if (veb) {
if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
dev_info(&vsi->back->pdev->dev,
"New VSI creation error, uplink seid of LAN VSI expected.\n");
return NULL;
}
/* We come up by default in VEPA mode if SRIOV is not
* already enabled, in which case we can't force VEPA
* mode.
*/
if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
veb->bridge_mode = BRIDGE_MODE_VEPA;
pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
}
i40e_config_bridge_mode(veb);
}
for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
veb = pf->veb[i];
}
if (!veb) {
dev_info(&pf->pdev->dev, "couldn't add VEB\n");
return NULL;
}
vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
uplink_seid = veb->seid;
}
/* get vsi sw struct */
v_idx = i40e_vsi_mem_alloc(pf, type);
if (v_idx < 0)
goto err_alloc;
vsi = pf->vsi[v_idx];
if (!vsi)
goto err_alloc;
vsi->type = type;
vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
if (type == I40E_VSI_MAIN)
pf->lan_vsi = v_idx;
else if (type == I40E_VSI_SRIOV)
vsi->vf_id = param1;
/* assign it some queues */
ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
vsi->idx);
if (ret < 0) {
dev_info(&pf->pdev->dev,
"failed to get tracking for %d queues for VSI %d err=%d\n",
vsi->alloc_queue_pairs, vsi->seid, ret);
goto err_vsi;
}
vsi->base_queue = ret;
/* get a VSI from the hardware */
vsi->uplink_seid = uplink_seid;
ret = i40e_add_vsi(vsi);
if (ret)
goto err_vsi;
switch (vsi->type) {
/* setup the netdev if needed */
case I40E_VSI_MAIN:
/* Apply relevant filters if a platform-specific mac
* address was selected.
*/
if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
if (ret) {
dev_warn(&pf->pdev->dev,
"could not set up macaddr; err %d\n",
ret);
}
}
case I40E_VSI_VMDQ2:
case I40E_VSI_FCOE:
ret = i40e_config_netdev(vsi);
if (ret)
goto err_netdev;
ret = register_netdev(vsi->netdev);
if (ret)
goto err_netdev;
vsi->netdev_registered = true;
netif_carrier_off(vsi->netdev);
#ifdef CONFIG_I40E_DCB
/* Setup DCB netlink interface */
i40e_dcbnl_setup(vsi);
#endif /* CONFIG_I40E_DCB */
/* fall through */
case I40E_VSI_FDIR:
/* set up vectors and rings if needed */
ret = i40e_vsi_setup_vectors(vsi);
if (ret)
goto err_msix;
ret = i40e_alloc_rings(vsi);
if (ret)
goto err_rings;
/* map all of the rings to the q_vectors */
i40e_vsi_map_rings_to_vectors(vsi);
i40e_vsi_reset_stats(vsi);
break;
default:
/* no netdev or rings for the other VSI types */
break;
}
if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
(vsi->type == I40E_VSI_VMDQ2)) {
ret = i40e_vsi_config_rss(vsi);
}
return vsi;
err_rings:
i40e_vsi_free_q_vectors(vsi);
err_msix:
if (vsi->netdev_registered) {
vsi->netdev_registered = false;
unregister_netdev(vsi->netdev);
free_netdev(vsi->netdev);
vsi->netdev = NULL;
}
err_netdev:
i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
err_vsi:
i40e_vsi_clear(vsi);
err_alloc:
return NULL;
}
/**
* i40e_veb_get_bw_info - Query VEB BW information
* @veb: the veb to query
*
* Query the Tx scheduler BW configuration data for given VEB
**/
static int i40e_veb_get_bw_info(struct i40e_veb *veb)
{
struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
struct i40e_pf *pf = veb->pf;
struct i40e_hw *hw = &pf->hw;
u32 tc_bw_max;
int ret = 0;
int i;
ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
&bw_data, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"query veb bw config failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
goto out;
}
ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
&ets_data, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"query veb bw ets config failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
goto out;
}
veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
veb->bw_max_quanta = ets_data.tc_bw_max;
veb->is_abs_credits = bw_data.absolute_credits_enable;
veb->enabled_tc = ets_data.tc_valid_bits;
tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
(le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
veb->bw_tc_limit_credits[i] =
le16_to_cpu(bw_data.tc_bw_limits[i]);
veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
}
out:
return ret;
}
/**
* i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
* @pf: board private structure
*
* On error: returns error code (negative)
* On success: returns vsi index in PF (positive)
**/
static int i40e_veb_mem_alloc(struct i40e_pf *pf)
{
int ret = -ENOENT;
struct i40e_veb *veb;
int i;
/* Need to protect the allocation of switch elements at the PF level */
mutex_lock(&pf->switch_mutex);
/* VEB list may be fragmented if VEB creation/destruction has
* been happening. We can afford to do a quick scan to look
* for any free slots in the list.
*
* find next empty veb slot, looping back around if necessary
*/
i = 0;
while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
i++;
if (i >= I40E_MAX_VEB) {
ret = -ENOMEM;
goto err_alloc_veb; /* out of VEB slots! */
}
veb = kzalloc(sizeof(*veb), GFP_KERNEL);
if (!veb) {
ret = -ENOMEM;
goto err_alloc_veb;
}
veb->pf = pf;
veb->idx = i;
veb->enabled_tc = 1;
pf->veb[i] = veb;
ret = i;
err_alloc_veb:
mutex_unlock(&pf->switch_mutex);
return ret;
}
/**
* i40e_switch_branch_release - Delete a branch of the switch tree
* @branch: where to start deleting
*
* This uses recursion to find the tips of the branch to be
* removed, deleting until we get back to and can delete this VEB.
**/
static void i40e_switch_branch_release(struct i40e_veb *branch)
{
struct i40e_pf *pf = branch->pf;
u16 branch_seid = branch->seid;
u16 veb_idx = branch->idx;
int i;
/* release any VEBs on this VEB - RECURSION */
for (i = 0; i < I40E_MAX_VEB; i++) {
if (!pf->veb[i])
continue;
if (pf->veb[i]->uplink_seid == branch->seid)
i40e_switch_branch_release(pf->veb[i]);
}
/* Release the VSIs on this VEB, but not the owner VSI.
*
* NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
* the VEB itself, so don't use (*branch) after this loop.
*/
for (i = 0; i < pf->num_alloc_vsi; i++) {
if (!pf->vsi[i])
continue;
if (pf->vsi[i]->uplink_seid == branch_seid &&
(pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
i40e_vsi_release(pf->vsi[i]);
}
}
/* There's one corner case where the VEB might not have been
* removed, so double check it here and remove it if needed.
* This case happens if the veb was created from the debugfs
* commands and no VSIs were added to it.
*/
if (pf->veb[veb_idx])
i40e_veb_release(pf->veb[veb_idx]);
}
/**
* i40e_veb_clear - remove veb struct
* @veb: the veb to remove
**/
static void i40e_veb_clear(struct i40e_veb *veb)
{
if (!veb)
return;
if (veb->pf) {
struct i40e_pf *pf = veb->pf;
mutex_lock(&pf->switch_mutex);
if (pf->veb[veb->idx] == veb)
pf->veb[veb->idx] = NULL;
mutex_unlock(&pf->switch_mutex);
}
kfree(veb);
}
/**
* i40e_veb_release - Delete a VEB and free its resources
* @veb: the VEB being removed
**/
void i40e_veb_release(struct i40e_veb *veb)
{
struct i40e_vsi *vsi = NULL;
struct i40e_pf *pf;
int i, n = 0;
pf = veb->pf;
/* find the remaining VSI and check for extras */
for (i = 0; i < pf->num_alloc_vsi; i++) {
if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
n++;
vsi = pf->vsi[i];
}
}
if (n != 1) {
dev_info(&pf->pdev->dev,
"can't remove VEB %d with %d VSIs left\n",
veb->seid, n);
return;
}
/* move the remaining VSI to uplink veb */
vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
if (veb->uplink_seid) {
vsi->uplink_seid = veb->uplink_seid;
if (veb->uplink_seid == pf->mac_seid)
vsi->veb_idx = I40E_NO_VEB;
else
vsi->veb_idx = veb->veb_idx;
} else {
/* floating VEB */
vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
}
i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
i40e_veb_clear(veb);
}
/**
* i40e_add_veb - create the VEB in the switch
* @veb: the VEB to be instantiated
* @vsi: the controlling VSI
**/
static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
{
struct i40e_pf *pf = veb->pf;
bool is_default = veb->pf->cur_promisc;
bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
int ret;
/* get a VEB from the hardware */
ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
veb->enabled_tc, is_default,
&veb->seid, enable_stats, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't add VEB, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
return -EPERM;
}
/* get statistics counter */
ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
&veb->stats_idx, NULL, NULL, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't get VEB statistics idx, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
return -EPERM;
}
ret = i40e_veb_get_bw_info(veb);
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't get VEB bw info, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
return -ENOENT;
}
vsi->uplink_seid = veb->seid;
vsi->veb_idx = veb->idx;
vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
return 0;
}
/**
* i40e_veb_setup - Set up a VEB
* @pf: board private structure
* @flags: VEB setup flags
* @uplink_seid: the switch element to link to
* @vsi_seid: the initial VSI seid
* @enabled_tc: Enabled TC bit-map
*
* This allocates the sw VEB structure and links it into the switch
* It is possible and legal for this to be a duplicate of an already
* existing VEB. It is also possible for both uplink and vsi seids
* to be zero, in order to create a floating VEB.
*
* Returns pointer to the successfully allocated VEB sw struct on
* success, otherwise returns NULL on failure.
**/
struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
u16 uplink_seid, u16 vsi_seid,
u8 enabled_tc)
{
struct i40e_veb *veb, *uplink_veb = NULL;
int vsi_idx, veb_idx;
int ret;
/* if one seid is 0, the other must be 0 to create a floating relay */
if ((uplink_seid == 0 || vsi_seid == 0) &&
(uplink_seid + vsi_seid != 0)) {
dev_info(&pf->pdev->dev,
"one, not both seid's are 0: uplink=%d vsi=%d\n",
uplink_seid, vsi_seid);
return NULL;
}
/* make sure there is such a vsi and uplink */
for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
break;
if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
vsi_seid);
return NULL;
}
if (uplink_seid && uplink_seid != pf->mac_seid) {
for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
if (pf->veb[veb_idx] &&
pf->veb[veb_idx]->seid == uplink_seid) {
uplink_veb = pf->veb[veb_idx];
break;
}
}
if (!uplink_veb) {
dev_info(&pf->pdev->dev,
"uplink seid %d not found\n", uplink_seid);
return NULL;
}
}
/* get veb sw struct */
veb_idx = i40e_veb_mem_alloc(pf);
if (veb_idx < 0)
goto err_alloc;
veb = pf->veb[veb_idx];
veb->flags = flags;
veb->uplink_seid = uplink_seid;
veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
/* create the VEB in the switch */
ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
if (ret)
goto err_veb;
if (vsi_idx == pf->lan_vsi)
pf->lan_veb = veb->idx;
return veb;
err_veb:
i40e_veb_clear(veb);
err_alloc:
return NULL;
}
/**
* i40e_setup_pf_switch_element - set PF vars based on switch type
* @pf: board private structure
* @ele: element we are building info from
* @num_reported: total number of elements
* @printconfig: should we print the contents
*
* helper function to assist in extracting a few useful SEID values.
**/
static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
struct i40e_aqc_switch_config_element_resp *ele,
u16 num_reported, bool printconfig)
{
u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
u8 element_type = ele->element_type;
u16 seid = le16_to_cpu(ele->seid);
if (printconfig)
dev_info(&pf->pdev->dev,
"type=%d seid=%d uplink=%d downlink=%d\n",
element_type, seid, uplink_seid, downlink_seid);
switch (element_type) {
case I40E_SWITCH_ELEMENT_TYPE_MAC:
pf->mac_seid = seid;
break;
case I40E_SWITCH_ELEMENT_TYPE_VEB:
/* Main VEB? */
if (uplink_seid != pf->mac_seid)
break;
if (pf->lan_veb == I40E_NO_VEB) {
int v;
/* find existing or else empty VEB */
for (v = 0; v < I40E_MAX_VEB; v++) {
if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
pf->lan_veb = v;
break;
}
}
if (pf->lan_veb == I40E_NO_VEB) {
v = i40e_veb_mem_alloc(pf);
if (v < 0)
break;
pf->lan_veb = v;
}
}
pf->veb[pf->lan_veb]->seid = seid;
pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
pf->veb[pf->lan_veb]->pf = pf;
pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
break;
case I40E_SWITCH_ELEMENT_TYPE_VSI:
if (num_reported != 1)
break;
/* This is immediately after a reset so we can assume this is
* the PF's VSI
*/
pf->mac_seid = uplink_seid;
pf->pf_seid = downlink_seid;
pf->main_vsi_seid = seid;
if (printconfig)
dev_info(&pf->pdev->dev,
"pf_seid=%d main_vsi_seid=%d\n",
pf->pf_seid, pf->main_vsi_seid);
break;
case I40E_SWITCH_ELEMENT_TYPE_PF:
case I40E_SWITCH_ELEMENT_TYPE_VF:
case I40E_SWITCH_ELEMENT_TYPE_EMP:
case I40E_SWITCH_ELEMENT_TYPE_BMC:
case I40E_SWITCH_ELEMENT_TYPE_PE:
case I40E_SWITCH_ELEMENT_TYPE_PA:
/* ignore these for now */
break;
default:
dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
element_type, seid);
break;
}
}
/**
* i40e_fetch_switch_configuration - Get switch config from firmware
* @pf: board private structure
* @printconfig: should we print the contents
*
* Get the current switch configuration from the device and
* extract a few useful SEID values.
**/
int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
{
struct i40e_aqc_get_switch_config_resp *sw_config;
u16 next_seid = 0;
int ret = 0;
u8 *aq_buf;
int i;
aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
if (!aq_buf)
return -ENOMEM;
sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
do {
u16 num_reported, num_total;
ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
I40E_AQ_LARGE_BUF,
&next_seid, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"get switch config failed err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
kfree(aq_buf);
return -ENOENT;
}
num_reported = le16_to_cpu(sw_config->header.num_reported);
num_total = le16_to_cpu(sw_config->header.num_total);
if (printconfig)
dev_info(&pf->pdev->dev,
"header: %d reported %d total\n",
num_reported, num_total);
for (i = 0; i < num_reported; i++) {
struct i40e_aqc_switch_config_element_resp *ele =
&sw_config->element[i];
i40e_setup_pf_switch_element(pf, ele, num_reported,
printconfig);
}
} while (next_seid != 0);
kfree(aq_buf);
return ret;
}
/**
* i40e_setup_pf_switch - Setup the HW switch on startup or after reset
* @pf: board private structure
* @reinit: if the Main VSI needs to re-initialized.
*
* Returns 0 on success, negative value on failure
**/
static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
{
int ret;
/* find out what's out there already */
ret = i40e_fetch_switch_configuration(pf, false);
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't fetch switch config, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
return ret;
}
i40e_pf_reset_stats(pf);
/* first time setup */
if (pf->lan_vsi == I40E_NO_VSI || reinit) {
struct i40e_vsi *vsi = NULL;
u16 uplink_seid;
/* Set up the PF VSI associated with the PF's main VSI
* that is already in the HW switch
*/
if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
uplink_seid = pf->veb[pf->lan_veb]->seid;
else
uplink_seid = pf->mac_seid;
if (pf->lan_vsi == I40E_NO_VSI)
vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
else if (reinit)
vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
if (!vsi) {
dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
i40e_fdir_teardown(pf);
return -EAGAIN;
}
} else {
/* force a reset of TC and queue layout configurations */
u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
}
i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
i40e_fdir_sb_setup(pf);
/* Setup static PF queue filter control settings */
ret = i40e_setup_pf_filter_control(pf);
if (ret) {
dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
ret);
/* Failure here should not stop continuing other steps */
}
/* enable RSS in the HW, even for only one queue, as the stack can use
* the hash
*/
if ((pf->flags & I40E_FLAG_RSS_ENABLED))
i40e_pf_config_rss(pf);
/* fill in link information and enable LSE reporting */
i40e_update_link_info(&pf->hw);
i40e_link_event(pf);
/* Initialize user-specific link properties */
pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
I40E_AQ_AN_COMPLETED) ? true : false);
i40e_ptp_init(pf);
return ret;
}
/**
* i40e_determine_queue_usage - Work out queue distribution
* @pf: board private structure
**/
static void i40e_determine_queue_usage(struct i40e_pf *pf)
{
int queues_left;
pf->num_lan_qps = 0;
#ifdef I40E_FCOE
pf->num_fcoe_qps = 0;
#endif
/* Find the max queues to be put into basic use. We'll always be
* using TC0, whether or not DCB is running, and TC0 will get the
* big RSS set.
*/
queues_left = pf->hw.func_caps.num_tx_qp;
if ((queues_left == 1) ||
!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
/* one qp for PF, no queues for anything else */
queues_left = 0;
pf->alloc_rss_size = pf->num_lan_qps = 1;
/* make sure all the fancies are disabled */
pf->flags &= ~(I40E_FLAG_RSS_ENABLED |
I40E_FLAG_IWARP_ENABLED |
#ifdef I40E_FCOE
I40E_FLAG_FCOE_ENABLED |
#endif
I40E_FLAG_FD_SB_ENABLED |
I40E_FLAG_FD_ATR_ENABLED |
I40E_FLAG_DCB_CAPABLE |
I40E_FLAG_SRIOV_ENABLED |
I40E_FLAG_VMDQ_ENABLED);
} else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
I40E_FLAG_FD_SB_ENABLED |
I40E_FLAG_FD_ATR_ENABLED |
I40E_FLAG_DCB_CAPABLE))) {
/* one qp for PF */
pf->alloc_rss_size = pf->num_lan_qps = 1;
queues_left -= pf->num_lan_qps;
pf->flags &= ~(I40E_FLAG_RSS_ENABLED |
I40E_FLAG_IWARP_ENABLED |
#ifdef I40E_FCOE
I40E_FLAG_FCOE_ENABLED |
#endif
I40E_FLAG_FD_SB_ENABLED |
I40E_FLAG_FD_ATR_ENABLED |
I40E_FLAG_DCB_ENABLED |
I40E_FLAG_VMDQ_ENABLED);
} else {
/* Not enough queues for all TCs */
if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
(queues_left < I40E_MAX_TRAFFIC_CLASS)) {
pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
}
pf->num_lan_qps = max_t(int, pf->rss_size_max,
num_online_cpus());
pf->num_lan_qps = min_t(int, pf->num_lan_qps,
pf->hw.func_caps.num_tx_qp);
queues_left -= pf->num_lan_qps;
}
#ifdef I40E_FCOE
if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
if (I40E_DEFAULT_FCOE <= queues_left) {
pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
} else if (I40E_MINIMUM_FCOE <= queues_left) {
pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
} else {
pf->num_fcoe_qps = 0;
pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
}
queues_left -= pf->num_fcoe_qps;
}
#endif
if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
if (queues_left > 1) {
queues_left -= 1; /* save 1 queue for FD */
} else {
pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
}
}
if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
pf->num_vf_qps && pf->num_req_vfs && queues_left) {
pf->num_req_vfs = min_t(int, pf->num_req_vfs,
(queues_left / pf->num_vf_qps));
queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
}
if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
(queues_left / pf->num_vmdq_qps));
queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
}
pf->queues_left = queues_left;
dev_dbg(&pf->pdev->dev,
"qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
pf->hw.func_caps.num_tx_qp,
!!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
queues_left);
#ifdef I40E_FCOE
dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
#endif
}
/**
* i40e_setup_pf_filter_control - Setup PF static filter control
* @pf: PF to be setup
*
* i40e_setup_pf_filter_control sets up a PF's initial filter control
* settings. If PE/FCoE are enabled then it will also set the per PF
* based filter sizes required for them. It also enables Flow director,
* ethertype and macvlan type filter settings for the pf.
*
* Returns 0 on success, negative on failure
**/
static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
{
struct i40e_filter_control_settings *settings = &pf->filter_settings;
settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
/* Flow Director is enabled */
if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
settings->enable_fdir = true;
/* Ethtype and MACVLAN filters enabled for PF */
settings->enable_ethtype = true;
settings->enable_macvlan = true;
if (i40e_set_filter_control(&pf->hw, settings))
return -ENOENT;
return 0;
}
#define INFO_STRING_LEN 255
#define REMAIN(__x) (INFO_STRING_LEN - (__x))
static void i40e_print_features(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
char *buf;
int i;
buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
if (!buf)
return;
i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
#ifdef CONFIG_PCI_IOV
i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
#endif
i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d RX: %s",
pf->hw.func_caps.num_vsis,
pf->vsi[pf->lan_vsi]->num_queue_pairs,
pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
if (pf->flags & I40E_FLAG_RSS_ENABLED)
i += snprintf(&buf[i], REMAIN(i), " RSS");
if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
i += snprintf(&buf[i], REMAIN(i), " FD_SB");
i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
}
if (pf->flags & I40E_FLAG_DCB_CAPABLE)
i += snprintf(&buf[i], REMAIN(i), " DCB");
#if IS_ENABLED(CONFIG_VXLAN)
i += snprintf(&buf[i], REMAIN(i), " VxLAN");
#endif
#if IS_ENABLED(CONFIG_GENEVE)
i += snprintf(&buf[i], REMAIN(i), " Geneve");
#endif
if (pf->flags & I40E_FLAG_PTP)
i += snprintf(&buf[i], REMAIN(i), " PTP");
#ifdef I40E_FCOE
if (pf->flags & I40E_FLAG_FCOE_ENABLED)
i += snprintf(&buf[i], REMAIN(i), " FCOE");
#endif
if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
i += snprintf(&buf[i], REMAIN(i), " VEB");
else
i += snprintf(&buf[i], REMAIN(i), " VEPA");
dev_info(&pf->pdev->dev, "%s\n", buf);
kfree(buf);
WARN_ON(i > INFO_STRING_LEN);
}
/**
* i40e_get_platform_mac_addr - get platform-specific MAC address
*
* @pdev: PCI device information struct
* @pf: board private structure
*
* Look up the MAC address in Open Firmware on systems that support it,
* and use IDPROM on SPARC if no OF address is found. On return, the
* I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
* has been selected.
**/
static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
{
pf->flags &= ~I40E_FLAG_PF_MAC;
if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
pf->flags |= I40E_FLAG_PF_MAC;
}
/**
* i40e_probe - Device initialization routine
* @pdev: PCI device information struct
* @ent: entry in i40e_pci_tbl
*
* i40e_probe initializes a PF identified by a pci_dev structure.
* The OS initialization, configuring of the PF private structure,
* and a hardware reset occur.
*
* Returns 0 on success, negative on failure
**/
static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct i40e_aq_get_phy_abilities_resp abilities;
struct i40e_pf *pf;
struct i40e_hw *hw;
static u16 pfs_found;
u16 wol_nvm_bits;
u16 link_status;
int err;
u32 val;
u32 i;
u8 set_fc_aq_fail;
err = pci_enable_device_mem(pdev);
if (err)
return err;
/* set up for high or low dma */
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (err) {
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (err) {
dev_err(&pdev->dev,
"DMA configuration failed: 0x%x\n", err);
goto err_dma;
}
}
/* set up pci connections */
err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
IORESOURCE_MEM), i40e_driver_name);
if (err) {
dev_info(&pdev->dev,
"pci_request_selected_regions failed %d\n", err);
goto err_pci_reg;
}
pci_enable_pcie_error_reporting(pdev);
pci_set_master(pdev);
/* Now that we have a PCI connection, we need to do the
* low level device setup. This is primarily setting up
* the Admin Queue structures and then querying for the
* device's current profile information.
*/
pf = kzalloc(sizeof(*pf), GFP_KERNEL);
if (!pf) {
err = -ENOMEM;
goto err_pf_alloc;
}
pf->next_vsi = 0;
pf->pdev = pdev;
set_bit(__I40E_DOWN, &pf->state);
hw = &pf->hw;
hw->back = pf;
pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
I40E_MAX_CSR_SPACE);
hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
if (!hw->hw_addr) {
err = -EIO;
dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
(unsigned int)pci_resource_start(pdev, 0),
pf->ioremap_len, err);
goto err_ioremap;
}
hw->vendor_id = pdev->vendor;
hw->device_id = pdev->device;
pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
hw->subsystem_vendor_id = pdev->subsystem_vendor;
hw->subsystem_device_id = pdev->subsystem_device;
hw->bus.device = PCI_SLOT(pdev->devfn);
hw->bus.func = PCI_FUNC(pdev->devfn);
pf->instance = pfs_found;
/* set up the locks for the AQ, do this only once in probe
* and destroy them only once in remove
*/
mutex_init(&hw->aq.asq_mutex);
mutex_init(&hw->aq.arq_mutex);
if (debug != -1) {
pf->msg_enable = pf->hw.debug_mask;
pf->msg_enable = debug;
}
/* do a special CORER for clearing PXE mode once at init */
if (hw->revision_id == 0 &&
(rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
i40e_flush(hw);
msleep(200);
pf->corer_count++;
i40e_clear_pxe_mode(hw);
}
/* Reset here to make sure all is clean and to define PF 'n' */
i40e_clear_hw(hw);
err = i40e_pf_reset(hw);
if (err) {
dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
goto err_pf_reset;
}
pf->pfr_count++;
hw->aq.num_arq_entries = I40E_AQ_LEN;
hw->aq.num_asq_entries = I40E_AQ_LEN;
hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
snprintf(pf->int_name, sizeof(pf->int_name) - 1,
"%s-%s:misc",
dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
err = i40e_init_shared_code(hw);
if (err) {
dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
err);
goto err_pf_reset;
}
/* set up a default setting for link flow control */
pf->hw.fc.requested_mode = I40E_FC_NONE;
err = i40e_init_adminq(hw);
if (err) {
if (err == I40E_ERR_FIRMWARE_API_VERSION)
dev_info(&pdev->dev,
"The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
else
dev_info(&pdev->dev,
"The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
goto err_pf_reset;
}
/* provide nvm, fw, api versions */
dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
hw->aq.api_maj_ver, hw->aq.api_min_ver,
i40e_nvm_version_str(hw));
if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
dev_info(&pdev->dev,
"The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
dev_info(&pdev->dev,
"The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
i40e_verify_eeprom(pf);
/* Rev 0 hardware was never productized */
if (hw->revision_id < 1)
dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");
i40e_clear_pxe_mode(hw);
err = i40e_get_capabilities(pf);
if (err)
goto err_adminq_setup;
err = i40e_sw_init(pf);
if (err) {
dev_info(&pdev->dev, "sw_init failed: %d\n", err);
goto err_sw_init;
}
err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
hw->func_caps.num_rx_qp,
pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
if (err) {
dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
goto err_init_lan_hmc;
}
err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
if (err) {
dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
err = -ENOENT;
goto err_configure_lan_hmc;
}
/* Disable LLDP for NICs that have firmware versions lower than v4.3.
* Ignore error return codes because if it was already disabled via
* hardware settings this will fail
*/
if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
i40e_aq_stop_lldp(hw, true, NULL);
}
i40e_get_mac_addr(hw, hw->mac.addr);
/* allow a platform config to override the HW addr */
i40e_get_platform_mac_addr(pdev, pf);
if (!is_valid_ether_addr(hw->mac.addr)) {
dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
err = -EIO;
goto err_mac_addr;
}
dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
i40e_get_port_mac_addr(hw, hw->mac.port_addr);
if (is_valid_ether_addr(hw->mac.port_addr))
pf->flags |= I40E_FLAG_PORT_ID_VALID;
#ifdef I40E_FCOE
err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
if (err)
dev_info(&pdev->dev,
"(non-fatal) SAN MAC retrieval failed: %d\n", err);
if (!is_valid_ether_addr(hw->mac.san_addr)) {
dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
hw->mac.san_addr);
ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
}
dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
#endif /* I40E_FCOE */
pci_set_drvdata(pdev, pf);
pci_save_state(pdev);
#ifdef CONFIG_I40E_DCB
err = i40e_init_pf_dcb(pf);
if (err) {
dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
/* Continue without DCB enabled */
}
#endif /* CONFIG_I40E_DCB */
/* set up periodic task facility */
setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
pf->service_timer_period = HZ;
INIT_WORK(&pf->service_task, i40e_service_task);
clear_bit(__I40E_SERVICE_SCHED, &pf->state);
pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
/* NVM bit on means WoL disabled for the port */
i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
pf->wol_en = false;
else
pf->wol_en = true;
device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
/* set up the main switch operations */
i40e_determine_queue_usage(pf);
err = i40e_init_interrupt_scheme(pf);
if (err)
goto err_switch_setup;
/* The number of VSIs reported by the FW is the minimum guaranteed
* to us; HW supports far more and we share the remaining pool with
* the other PFs. We allocate space for more than the guarantee with
* the understanding that we might not get them all later.
*/
if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
else
pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
/* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
GFP_KERNEL);
if (!pf->vsi) {
err = -ENOMEM;
goto err_switch_setup;
}
#ifdef CONFIG_PCI_IOV
/* prep for VF support */
if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
!test_bit(__I40E_BAD_EEPROM, &pf->state)) {
if (pci_num_vf(pdev))
pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
}
#endif
err = i40e_setup_pf_switch(pf, false);
if (err) {
dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
goto err_vsis;
}
/* Make sure flow control is set according to current settings */
err = i40e_set_fc(hw, &set_fc_aq_fail, true);
if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
dev_dbg(&pf->pdev->dev,
"Set fc with err %s aq_err %s on get_phy_cap\n",
i40e_stat_str(hw, err),
i40e_aq_str(hw, hw->aq.asq_last_status));
if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
dev_dbg(&pf->pdev->dev,
"Set fc with err %s aq_err %s on set_phy_config\n",
i40e_stat_str(hw, err),
i40e_aq_str(hw, hw->aq.asq_last_status));
if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
dev_dbg(&pf->pdev->dev,
"Set fc with err %s aq_err %s on get_link_info\n",
i40e_stat_str(hw, err),
i40e_aq_str(hw, hw->aq.asq_last_status));
/* if FDIR VSI was set up, start it now */
for (i = 0; i < pf->num_alloc_vsi; i++) {
if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
i40e_vsi_open(pf->vsi[i]);
break;
}
}
/* The driver only wants link up/down and module qualification
* reports from firmware. Note the negative logic.
*/
err = i40e_aq_set_phy_int_mask(&pf->hw,
~(I40E_AQ_EVENT_LINK_UPDOWN |
I40E_AQ_EVENT_MEDIA_NA |
I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
if (err)
dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, err),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
/* Reconfigure hardware for allowing smaller MSS in the case
* of TSO, so that we avoid the MDD being fired and causing
* a reset in the case of small MSS+TSO.
*/
val = rd32(hw, I40E_REG_MSS);
if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
val &= ~I40E_REG_MSS_MIN_MASK;
val |= I40E_64BYTE_MSS;
wr32(hw, I40E_REG_MSS, val);
}
if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
msleep(75);
err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
if (err)
dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, err),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
}
/* The main driver is (mostly) up and happy. We need to set this state
* before setting up the misc vector or we get a race and the vector
* ends up disabled forever.
*/
clear_bit(__I40E_DOWN, &pf->state);
/* In case of MSIX we are going to setup the misc vector right here
* to handle admin queue events etc. In case of legacy and MSI
* the misc functionality and queue processing is combined in
* the same vector and that gets setup at open.
*/
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
err = i40e_setup_misc_vector(pf);
if (err) {
dev_info(&pdev->dev,
"setup of misc vector failed: %d\n", err);
goto err_vsis;
}
}
#ifdef CONFIG_PCI_IOV
/* prep for VF support */
if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
!test_bit(__I40E_BAD_EEPROM, &pf->state)) {
/* disable link interrupts for VFs */
val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
i40e_flush(hw);
if (pci_num_vf(pdev)) {
dev_info(&pdev->dev,
"Active VFs found, allocating resources.\n");
err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
if (err)
dev_info(&pdev->dev,
"Error %d allocating resources for existing VFs\n",
err);
}
}
#endif /* CONFIG_PCI_IOV */
if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
pf->num_iwarp_msix,
I40E_IWARP_IRQ_PILE_ID);
if (pf->iwarp_base_vector < 0) {
dev_info(&pdev->dev,
"failed to get tracking for %d vectors for IWARP err=%d\n",
pf->num_iwarp_msix, pf->iwarp_base_vector);
pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
}
}
i40e_dbg_pf_init(pf);
/* tell the firmware that we're starting */
i40e_send_version(pf);
/* since everything's happy, start the service_task timer */
mod_timer(&pf->service_timer,
round_jiffies(jiffies + pf->service_timer_period));
/* add this PF to client device list and launch a client service task */
err = i40e_lan_add_device(pf);
if (err)
dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
err);
#ifdef I40E_FCOE
/* create FCoE interface */
i40e_fcoe_vsi_setup(pf);
#endif
#define PCI_SPEED_SIZE 8
#define PCI_WIDTH_SIZE 8
/* Devices on the IOSF bus do not have this information
* and will report PCI Gen 1 x 1 by default so don't bother
* checking them.
*/
if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
char speed[PCI_SPEED_SIZE] = "Unknown";
char width[PCI_WIDTH_SIZE] = "Unknown";
/* Get the negotiated link width and speed from PCI config
* space
*/
pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
&link_status);
i40e_set_pci_config_data(hw, link_status);
switch (hw->bus.speed) {
case i40e_bus_speed_8000:
strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
case i40e_bus_speed_5000:
strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
case i40e_bus_speed_2500:
strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
default:
break;
}
switch (hw->bus.width) {
case i40e_bus_width_pcie_x8:
strncpy(width, "8", PCI_WIDTH_SIZE); break;
case i40e_bus_width_pcie_x4:
strncpy(width, "4", PCI_WIDTH_SIZE); break;
case i40e_bus_width_pcie_x2:
strncpy(width, "2", PCI_WIDTH_SIZE); break;
case i40e_bus_width_pcie_x1:
strncpy(width, "1", PCI_WIDTH_SIZE); break;
default:
break;
}
dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
speed, width);
if (hw->bus.width < i40e_bus_width_pcie_x8 ||
hw->bus.speed < i40e_bus_speed_8000) {
dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
}
}
/* get the requested speeds from the fw */
err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
if (err)
dev_dbg(&pf->pdev->dev, "get requested speeds ret = %s last_status = %s\n",
i40e_stat_str(&pf->hw, err),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
/* get the supported phy types from the fw */
err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
if (err)
dev_dbg(&pf->pdev->dev, "get supported phy types ret = %s last_status = %s\n",
i40e_stat_str(&pf->hw, err),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
/* Add a filter to drop all Flow control frames from any VSI from being
* transmitted. By doing so we stop a malicious VF from sending out
* PAUSE or PFC frames and potentially controlling traffic for other
* PF/VF VSIs.
* The FW can still send Flow control frames if enabled.
*/
i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
pf->main_vsi_seid);
if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
(pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
/* print a string summarizing features */
i40e_print_features(pf);
return 0;
/* Unwind what we've done if something failed in the setup */
err_vsis:
set_bit(__I40E_DOWN, &pf->state);
i40e_clear_interrupt_scheme(pf);
kfree(pf->vsi);
err_switch_setup:
i40e_reset_interrupt_capability(pf);
del_timer_sync(&pf->service_timer);
err_mac_addr:
err_configure_lan_hmc:
(void)i40e_shutdown_lan_hmc(hw);
err_init_lan_hmc:
kfree(pf->qp_pile);
err_sw_init:
err_adminq_setup:
err_pf_reset:
iounmap(hw->hw_addr);
err_ioremap:
kfree(pf);
err_pf_alloc:
pci_disable_pcie_error_reporting(pdev);
pci_release_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM));
err_pci_reg:
err_dma:
pci_disable_device(pdev);
return err;
}
/**
* i40e_remove - Device removal routine
* @pdev: PCI device information struct
*
* i40e_remove is called by the PCI subsystem to alert the driver
* that is should release a PCI device. This could be caused by a
* Hot-Plug event, or because the driver is going to be removed from
* memory.
**/
static void i40e_remove(struct pci_dev *pdev)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
struct i40e_hw *hw = &pf->hw;
i40e_status ret_code;
int i;
i40e_dbg_pf_exit(pf);
i40e_ptp_stop(pf);
/* Disable RSS in hw */
i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
/* no more scheduling of any task */
set_bit(__I40E_SUSPENDED, &pf->state);
set_bit(__I40E_DOWN, &pf->state);
if (pf->service_timer.data)
del_timer_sync(&pf->service_timer);
if (pf->service_task.func)
cancel_work_sync(&pf->service_task);
if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
i40e_free_vfs(pf);
pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
}
i40e_fdir_teardown(pf);
/* If there is a switch structure or any orphans, remove them.
* This will leave only the PF's VSI remaining.
*/
for (i = 0; i < I40E_MAX_VEB; i++) {
if (!pf->veb[i])
continue;
if (pf->veb[i]->uplink_seid == pf->mac_seid ||
pf->veb[i]->uplink_seid == 0)
i40e_switch_branch_release(pf->veb[i]);
}
/* Now we can shutdown the PF's VSI, just before we kill
* adminq and hmc.
*/
if (pf->vsi[pf->lan_vsi])
i40e_vsi_release(pf->vsi[pf->lan_vsi]);
/* remove attached clients */
ret_code = i40e_lan_del_device(pf);
if (ret_code) {
dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
ret_code);
}
/* shutdown and destroy the HMC */
if (hw->hmc.hmc_obj) {
ret_code = i40e_shutdown_lan_hmc(hw);
if (ret_code)
dev_warn(&pdev->dev,
"Failed to destroy the HMC resources: %d\n",
ret_code);
}
/* shutdown the adminq */
ret_code = i40e_shutdown_adminq(hw);
if (ret_code)
dev_warn(&pdev->dev,
"Failed to destroy the Admin Queue resources: %d\n",
ret_code);
/* destroy the locks only once, here */
mutex_destroy(&hw->aq.arq_mutex);
mutex_destroy(&hw->aq.asq_mutex);
/* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
i40e_clear_interrupt_scheme(pf);
for (i = 0; i < pf->num_alloc_vsi; i++) {
if (pf->vsi[i]) {
i40e_vsi_clear_rings(pf->vsi[i]);
i40e_vsi_clear(pf->vsi[i]);
pf->vsi[i] = NULL;
}
}
for (i = 0; i < I40E_MAX_VEB; i++) {
kfree(pf->veb[i]);
pf->veb[i] = NULL;
}
kfree(pf->qp_pile);
kfree(pf->vsi);
iounmap(hw->hw_addr);
kfree(pf);
pci_release_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM));
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
}
/**
* i40e_pci_error_detected - warning that something funky happened in PCI land
* @pdev: PCI device information struct
*
* Called to warn that something happened and the error handling steps
* are in progress. Allows the driver to quiesce things, be ready for
* remediation.
**/
static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
enum pci_channel_state error)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
/* shutdown all operations */
if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
rtnl_lock();
i40e_prep_for_reset(pf);
rtnl_unlock();
}
/* Request a slot reset */
return PCI_ERS_RESULT_NEED_RESET;
}
/**
* i40e_pci_error_slot_reset - a PCI slot reset just happened
* @pdev: PCI device information struct
*
* Called to find if the driver can work with the device now that
* the pci slot has been reset. If a basic connection seems good
* (registers are readable and have sane content) then return a
* happy little PCI_ERS_RESULT_xxx.
**/
static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
pci_ers_result_t result;
int err;
u32 reg;
dev_dbg(&pdev->dev, "%s\n", __func__);
if (pci_enable_device_mem(pdev)) {
dev_info(&pdev->dev,
"Cannot re-enable PCI device after reset.\n");
result = PCI_ERS_RESULT_DISCONNECT;
} else {
pci_set_master(pdev);
pci_restore_state(pdev);
pci_save_state(pdev);
pci_wake_from_d3(pdev, false);
reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
if (reg == 0)
result = PCI_ERS_RESULT_RECOVERED;
else
result = PCI_ERS_RESULT_DISCONNECT;
}
err = pci_cleanup_aer_uncorrect_error_status(pdev);
if (err) {
dev_info(&pdev->dev,
"pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
err);
/* non-fatal, continue */
}
return result;
}
/**
* i40e_pci_error_resume - restart operations after PCI error recovery
* @pdev: PCI device information struct
*
* Called to allow the driver to bring things back up after PCI error
* and/or reset recovery has finished.
**/
static void i40e_pci_error_resume(struct pci_dev *pdev)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
dev_dbg(&pdev->dev, "%s\n", __func__);
if (test_bit(__I40E_SUSPENDED, &pf->state))
return;
rtnl_lock();
i40e_handle_reset_warning(pf);
rtnl_unlock();
}
/**
* i40e_shutdown - PCI callback for shutting down
* @pdev: PCI device information struct
**/
static void i40e_shutdown(struct pci_dev *pdev)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
struct i40e_hw *hw = &pf->hw;
set_bit(__I40E_SUSPENDED, &pf->state);
set_bit(__I40E_DOWN, &pf->state);
rtnl_lock();
i40e_prep_for_reset(pf);
rtnl_unlock();
wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
del_timer_sync(&pf->service_timer);
cancel_work_sync(&pf->service_task);
i40e_fdir_teardown(pf);
rtnl_lock();
i40e_prep_for_reset(pf);
rtnl_unlock();
wr32(hw, I40E_PFPM_APM,
(pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
wr32(hw, I40E_PFPM_WUFC,
(pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
i40e_clear_interrupt_scheme(pf);
if (system_state == SYSTEM_POWER_OFF) {
pci_wake_from_d3(pdev, pf->wol_en);
pci_set_power_state(pdev, PCI_D3hot);
}
}
#ifdef CONFIG_PM
/**
* i40e_suspend - PCI callback for moving to D3
* @pdev: PCI device information struct
**/
static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
struct i40e_hw *hw = &pf->hw;
set_bit(__I40E_SUSPENDED, &pf->state);
set_bit(__I40E_DOWN, &pf->state);
rtnl_lock();
i40e_prep_for_reset(pf);
rtnl_unlock();
wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
pci_wake_from_d3(pdev, pf->wol_en);
pci_set_power_state(pdev, PCI_D3hot);
return 0;
}
/**
* i40e_resume - PCI callback for waking up from D3
* @pdev: PCI device information struct
**/
static int i40e_resume(struct pci_dev *pdev)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
u32 err;
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
/* pci_restore_state() clears dev->state_saves, so
* call pci_save_state() again to restore it.
*/
pci_save_state(pdev);
err = pci_enable_device_mem(pdev);
if (err) {
dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
return err;
}
pci_set_master(pdev);
/* no wakeup events while running */
pci_wake_from_d3(pdev, false);
/* handling the reset will rebuild the device state */
if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
clear_bit(__I40E_DOWN, &pf->state);
rtnl_lock();
i40e_reset_and_rebuild(pf, false);
rtnl_unlock();
}
return 0;
}
#endif
static const struct pci_error_handlers i40e_err_handler = {
.error_detected = i40e_pci_error_detected,
.slot_reset = i40e_pci_error_slot_reset,
.resume = i40e_pci_error_resume,
};
static struct pci_driver i40e_driver = {
.name = i40e_driver_name,
.id_table = i40e_pci_tbl,
.probe = i40e_probe,
.remove = i40e_remove,
#ifdef CONFIG_PM
.suspend = i40e_suspend,
.resume = i40e_resume,
#endif
.shutdown = i40e_shutdown,
.err_handler = &i40e_err_handler,
.sriov_configure = i40e_pci_sriov_configure,
};
/**
* i40e_init_module - Driver registration routine
*
* i40e_init_module is the first routine called when the driver is
* loaded. All it does is register with the PCI subsystem.
**/
static int __init i40e_init_module(void)
{
pr_info("%s: %s - version %s\n", i40e_driver_name,
i40e_driver_string, i40e_driver_version_str);
pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
/* we will see if single thread per module is enough for now,
* it can't be any worse than using the system workqueue which
* was already single threaded
*/
i40e_wq = create_singlethread_workqueue(i40e_driver_name);
if (!i40e_wq) {
pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
return -ENOMEM;
}
i40e_dbg_init();
return pci_register_driver(&i40e_driver);
}
module_init(i40e_init_module);
/**
* i40e_exit_module - Driver exit cleanup routine
*
* i40e_exit_module is called just before the driver is removed
* from memory.
**/
static void __exit i40e_exit_module(void)
{
pci_unregister_driver(&i40e_driver);
destroy_workqueue(i40e_wq);
i40e_dbg_exit();
}
module_exit(i40e_exit_module);
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