2013-12-21 13:13:06 +07:00
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/*******************************************************************************
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*
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* Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
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2016-01-16 05:33:10 +07:00
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* Copyright(c) 2013 - 2016 Intel Corporation.
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2013-12-21 13:13:06 +07:00
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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2014-04-05 14:46:11 +07:00
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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2013-12-21 13:13:06 +07:00
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Contact Information:
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* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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******************************************************************************/
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#ifndef _I40EVF_H_
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#define _I40EVF_H_
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/aer.h>
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#include <linux/netdevice.h>
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#include <linux/vmalloc.h>
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#include <linux/interrupt.h>
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#include <linux/ethtool.h>
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#include <linux/if_vlan.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/sctp.h>
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#include <linux/ipv6.h>
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#include <net/ip6_checksum.h>
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#include <net/udp.h>
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#include "i40e_type.h"
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#include "i40e_virtchnl.h"
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#include "i40e_txrx.h"
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#define DEFAULT_DEBUG_LEVEL_SHIFT 3
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#define PFX "i40evf: "
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/* dummy struct to make common code less painful */
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struct i40e_vsi {
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struct i40evf_adapter *back;
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struct net_device *netdev;
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unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
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u16 seid;
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u16 id;
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unsigned long state;
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int base_vector;
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u16 work_limit;
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/* high bit set means dynamic, use accessor routines to read/write.
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* hardware only supports 2us resolution for the ITR registers.
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* these values always store the USER setting, and must be converted
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* before programming to a register.
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*/
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u16 rx_itr_setting;
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u16 tx_itr_setting;
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2015-08-29 04:55:58 +07:00
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u16 qs_handle;
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2015-10-27 06:44:34 +07:00
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u8 *rss_hkey_user; /* User configured hash keys */
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u8 *rss_lut_user; /* User configured lookup table entries */
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2013-12-21 13:13:06 +07:00
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};
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/* How many Rx Buffers do we bundle into one write to the hardware ? */
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#define I40EVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
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#define I40EVF_DEFAULT_TXD 512
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#define I40EVF_DEFAULT_RXD 512
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#define I40EVF_MAX_TXD 4096
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#define I40EVF_MIN_TXD 64
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#define I40EVF_MAX_RXD 4096
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#define I40EVF_MIN_RXD 64
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2014-04-23 11:50:08 +07:00
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#define I40EVF_REQ_DESCRIPTOR_MULTIPLE 32
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2013-12-21 13:13:06 +07:00
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/* Supported Rx Buffer Sizes */
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#define I40EVF_RXBUFFER_64 64 /* Used for packet split */
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#define I40EVF_RXBUFFER_128 128 /* Used for packet split */
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#define I40EVF_RXBUFFER_256 256 /* Used for packet split */
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#define I40EVF_RXBUFFER_2048 2048
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#define I40EVF_MAX_RXBUFFER 16384 /* largest size for single descriptor */
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#define I40EVF_MAX_AQ_BUF_SIZE 4096
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#define I40EVF_AQ_LEN 32
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2015-09-29 01:12:42 +07:00
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#define I40EVF_AQ_MAX_ERR 20 /* times to try before resetting AQ */
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2013-12-21 13:13:06 +07:00
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#define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
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#define I40E_RX_DESC(R, i) (&(((union i40e_32byte_rx_desc *)((R)->desc))[i]))
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#define I40E_TX_DESC(R, i) (&(((struct i40e_tx_desc *)((R)->desc))[i]))
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#define I40E_TX_CTXTDESC(R, i) \
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(&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
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2015-11-07 06:25:59 +07:00
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#define MAX_QUEUES 16
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2013-12-21 13:13:06 +07:00
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2015-06-24 06:00:04 +07:00
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#define I40EVF_HKEY_ARRAY_SIZE ((I40E_VFQF_HKEY_MAX_INDEX + 1) * 4)
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2015-10-28 03:15:06 +07:00
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#define I40EVF_HLUT_ARRAY_SIZE ((I40E_VFQF_HLUT_MAX_INDEX + 1) * 4)
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2015-06-24 06:00:04 +07:00
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2013-12-21 13:13:06 +07:00
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/* MAX_MSIX_Q_VECTORS of these are allocated,
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* but we only use one per queue-specific vector.
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*/
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struct i40e_q_vector {
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struct i40evf_adapter *adapter;
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struct i40e_vsi *vsi;
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struct napi_struct napi;
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unsigned long reg_idx;
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struct i40e_ring_container rx;
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struct i40e_ring_container tx;
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u32 ring_mask;
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u8 num_ringpairs; /* total number of ring pairs in vector */
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2015-09-29 01:16:54 +07:00
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#define ITR_COUNTDOWN_START 100
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u8 itr_countdown; /* when 0 or 1 update ITR */
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2013-12-21 13:13:06 +07:00
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int v_idx; /* vector index in list */
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char name[IFNAMSIZ + 9];
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2015-06-05 23:20:30 +07:00
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bool arm_wb_state;
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2013-12-21 13:13:06 +07:00
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cpumask_var_t affinity_mask;
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};
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/* Helper macros to switch between ints/sec and what the register uses.
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* And yes, it's the same math going both ways. The lowest value
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* supported by all of the i40e hardware is 8.
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*/
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#define EITR_INTS_PER_SEC_TO_REG(_eitr) \
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((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
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#define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
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#define I40EVF_DESC_UNUSED(R) \
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((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
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(R)->next_to_clean - (R)->next_to_use - 1)
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#define I40EVF_RX_DESC_ADV(R, i) \
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(&(((union i40e_adv_rx_desc *)((R).desc))[i]))
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#define I40EVF_TX_DESC_ADV(R, i) \
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(&(((union i40e_adv_tx_desc *)((R).desc))[i]))
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#define I40EVF_TX_CTXTDESC_ADV(R, i) \
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(&(((struct i40e_adv_tx_context_desc *)((R).desc))[i]))
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#define OTHER_VECTOR 1
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#define NONQ_VECS (OTHER_VECTOR)
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#define MIN_MSIX_Q_VECTORS 1
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#define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NONQ_VECS)
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#define I40EVF_QUEUE_END_OF_LIST 0x7FF
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#define I40EVF_FREE_VECTOR 0x7FFF
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struct i40evf_mac_filter {
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struct list_head list;
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u8 macaddr[ETH_ALEN];
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bool remove; /* filter needs to be removed */
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bool add; /* filter needs to be added */
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};
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struct i40evf_vlan_filter {
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struct list_head list;
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u16 vlan;
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bool remove; /* filter needs to be removed */
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bool add; /* filter needs to be added */
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};
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/* Driver state. The order of these is important! */
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enum i40evf_state_t {
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__I40EVF_STARTUP, /* driver loaded, probe complete */
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__I40EVF_REMOVE, /* driver is being unloaded */
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__I40EVF_INIT_VERSION_CHECK, /* aq msg sent, awaiting reply */
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__I40EVF_INIT_GET_RESOURCES, /* aq msg sent, awaiting reply */
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__I40EVF_INIT_SW, /* got resources, setting up structs */
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i40evf: refactor reset handling
Respond better to a VF reset event. When a reset is signaled by the
PF, or detected by the watchdog task, prevent the watchdog from
processing admin queue requests, and schedule the reset task.
In the reset task, wait first for the reset to start, then for it to
complete, then reinit the driver.
If the reset never appears to complete after a long, long time (>10
seconds is possible depending on what's going on with the PF driver),
then set a flag to indicate that PF communications have failed.
If this flag is set, check for the reset to complete in the watchdog,
and attempt to do a full reinitialization of the driver from scratch.
With these changes the VF driver correctly handles a PF reset event
while running on bare metal, or in a VM.
Also update copyrights.
Change-ID: I93513efd0b50523a8345e7f6a33a5e4f8a2a5996
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-13 18:48:53 +07:00
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__I40EVF_RESETTING, /* in reset */
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2013-12-21 13:13:06 +07:00
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/* Below here, watchdog is running */
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__I40EVF_DOWN, /* ready, can be opened */
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2015-12-10 06:50:27 +07:00
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__I40EVF_DOWN_PENDING, /* descending, waiting for watchdog */
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2013-12-21 13:13:06 +07:00
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__I40EVF_TESTING, /* in ethtool self-test */
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__I40EVF_RUNNING, /* opened, working */
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};
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enum i40evf_critical_section_t {
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__I40EVF_IN_CRITICAL_TASK, /* cannot be interrupted */
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};
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/* make common code happy */
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#define __I40E_DOWN __I40EVF_DOWN
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/* board specific private data structure */
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struct i40evf_adapter {
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struct timer_list watchdog_timer;
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struct work_struct reset_task;
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struct work_struct adminq_task;
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struct delayed_work init_task;
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2015-10-27 06:44:39 +07:00
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struct i40e_q_vector *q_vectors;
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2013-12-21 13:13:06 +07:00
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struct list_head vlan_filter_list;
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2014-02-13 18:48:51 +07:00
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char misc_vector_name[IFNAMSIZ + 9];
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2014-10-25 10:24:34 +07:00
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int num_active_queues;
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2013-12-21 13:13:06 +07:00
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/* TX */
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2015-10-27 06:44:40 +07:00
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struct i40e_ring *tx_rings;
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2013-12-21 13:13:06 +07:00
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u32 tx_timeout_count;
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struct list_head mac_filter_list;
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2014-04-24 13:41:37 +07:00
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u32 tx_desc_count;
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2013-12-21 13:13:06 +07:00
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/* RX */
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2015-10-27 06:44:40 +07:00
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struct i40e_ring *rx_rings;
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2013-12-21 13:13:06 +07:00
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u64 hw_csum_rx_error;
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2014-04-24 13:41:37 +07:00
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u32 rx_desc_count;
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2013-12-21 13:13:06 +07:00
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int num_msix_vectors;
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struct msix_entry *msix_entries;
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2014-02-13 18:48:52 +07:00
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u32 flags;
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2015-06-05 03:24:02 +07:00
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#define I40EVF_FLAG_RX_CSUM_ENABLED BIT(0)
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#define I40EVF_FLAG_RX_1BUF_CAPABLE BIT(1)
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#define I40EVF_FLAG_RX_PS_CAPABLE BIT(2)
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#define I40EVF_FLAG_RX_PS_ENABLED BIT(3)
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#define I40EVF_FLAG_IMIR_ENABLED BIT(5)
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#define I40EVF_FLAG_MQ_CAPABLE BIT(6)
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#define I40EVF_FLAG_NEED_LINK_UPDATE BIT(7)
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#define I40EVF_FLAG_PF_COMMS_FAILED BIT(8)
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#define I40EVF_FLAG_RESET_PENDING BIT(9)
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#define I40EVF_FLAG_RESET_NEEDED BIT(10)
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2015-06-05 23:20:26 +07:00
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#define I40EVF_FLAG_WB_ON_ITR_CAPABLE BIT(11)
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#define I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE BIT(12)
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2015-09-01 06:54:44 +07:00
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#define I40EVF_FLAG_ADDR_SET_BY_PF BIT(13)
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2015-06-05 23:20:26 +07:00
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/* duplicates for common code */
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2013-12-21 13:13:06 +07:00
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#define I40E_FLAG_FDIR_ATR_ENABLED 0
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#define I40E_FLAG_DCB_ENABLED 0
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#define I40E_FLAG_RX_CSUM_ENABLED I40EVF_FLAG_RX_CSUM_ENABLED
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2015-06-05 23:20:26 +07:00
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#define I40E_FLAG_WB_ON_ITR_CAPABLE I40EVF_FLAG_WB_ON_ITR_CAPABLE
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#define I40E_FLAG_OUTER_UDP_CSUM_CAPABLE I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE
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2013-12-21 13:13:06 +07:00
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/* flags for admin queue service task */
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u32 aq_required;
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2015-06-05 03:24:02 +07:00
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#define I40EVF_FLAG_AQ_ENABLE_QUEUES BIT(0)
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#define I40EVF_FLAG_AQ_DISABLE_QUEUES BIT(1)
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#define I40EVF_FLAG_AQ_ADD_MAC_FILTER BIT(2)
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#define I40EVF_FLAG_AQ_ADD_VLAN_FILTER BIT(3)
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#define I40EVF_FLAG_AQ_DEL_MAC_FILTER BIT(4)
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#define I40EVF_FLAG_AQ_DEL_VLAN_FILTER BIT(5)
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#define I40EVF_FLAG_AQ_CONFIGURE_QUEUES BIT(6)
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#define I40EVF_FLAG_AQ_MAP_VECTORS BIT(7)
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#define I40EVF_FLAG_AQ_HANDLE_RESET BIT(8)
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2015-06-05 23:20:26 +07:00
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#define I40EVF_FLAG_AQ_CONFIGURE_RSS BIT(9)
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2015-06-05 03:24:02 +07:00
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#define I40EVF_FLAG_AQ_GET_CONFIG BIT(10)
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i40evf: refactor reset handling
Respond better to a VF reset event. When a reset is signaled by the
PF, or detected by the watchdog task, prevent the watchdog from
processing admin queue requests, and schedule the reset task.
In the reset task, wait first for the reset to start, then for it to
complete, then reinit the driver.
If the reset never appears to complete after a long, long time (>10
seconds is possible depending on what's going on with the PF driver),
then set a flag to indicate that PF communications have failed.
If this flag is set, check for the reset to complete in the watchdog,
and attempt to do a full reinitialization of the driver from scratch.
With these changes the VF driver correctly handles a PF reset event
while running on bare metal, or in a VM.
Also update copyrights.
Change-ID: I93513efd0b50523a8345e7f6a33a5e4f8a2a5996
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-13 18:48:53 +07:00
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2013-12-21 13:13:06 +07:00
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/* OS defined structs */
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struct net_device *netdev;
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struct pci_dev *pdev;
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struct net_device_stats net_stats;
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2014-02-13 18:48:50 +07:00
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struct i40e_hw hw; /* defined in i40e_type.h */
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2013-12-21 13:13:06 +07:00
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enum i40evf_state_t state;
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2014-11-12 03:02:42 +07:00
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unsigned long crit_section;
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2013-12-21 13:13:06 +07:00
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struct work_struct watchdog_task;
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bool netdev_registered;
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bool link_up;
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enum i40e_virtchnl_ops current_op;
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2015-06-05 03:23:56 +07:00
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#define CLIENT_ENABLED(_a) ((_a)->vf_res->vf_offload_flags & \
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I40E_VIRTCHNL_VF_OFFLOAD_IWARP)
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#define RSS_AQ(_a) ((_a)->vf_res->vf_offload_flags & \
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I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ)
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#define VLAN_ALLOWED(_a) ((_a)->vf_res->vf_offload_flags & \
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I40E_VIRTCHNL_VF_OFFLOAD_VLAN)
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2013-12-21 13:13:06 +07:00
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struct i40e_virtchnl_vf_resource *vf_res; /* incl. all VSIs */
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struct i40e_virtchnl_vsi_resource *vsi_res; /* our LAN VSI */
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2015-06-05 03:23:56 +07:00
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struct i40e_virtchnl_version_info pf_version;
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#define PF_IS_V11(_a) (((_a)->pf_version.major == 1) && \
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((_a)->pf_version.minor == 1))
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2013-12-21 13:13:06 +07:00
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u16 msg_enable;
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struct i40e_eth_stats current_stats;
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struct i40e_vsi vsi;
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u32 aq_wait_count;
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};
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2016-01-16 05:33:10 +07:00
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/* Ethtool Private Flags */
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#define I40EVF_PRIV_FLAGS_PS BIT(0)
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2013-12-21 13:13:06 +07:00
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/* needed by i40evf_ethtool.c */
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extern char i40evf_driver_name[];
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extern const char i40evf_driver_version[];
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int i40evf_up(struct i40evf_adapter *adapter);
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void i40evf_down(struct i40evf_adapter *adapter);
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i40evf: handle big resets
The most common type of reset that the VF will encounter is a PF reset
that cascades down into a VF reset for each VF. In this case, the VF
will always be assigned the same VSI and recovery is fairly simple.
However, in the case of 'bigger' resets, such as a Core or EMP reset,
when the device is reinitialized, it's probable that the VF will NOT get
the same VSI. When this happens, the VF will not be able to recover, as
it will continue to request resources for its original VSI.
Add an extra state to the admin queue state machine so that the driver
can re-request its configuration information at runtime. During reset
recovery, set this bit in the aq_required field, and fetch the (possibly
new) configuration information before attempting to bring the driver
back up. Since the driver doesn't know what kind of reset it has
encountered, this step is done even for a PF reset, but it doesn't hurt
anything - it just gets the same VSI back.
Change-ID: I915d59ffb40375215117362f4ac7a37811aba748
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-05 03:23:58 +07:00
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int i40evf_process_config(struct i40evf_adapter *adapter);
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2016-01-16 05:33:10 +07:00
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void i40evf_schedule_reset(struct i40evf_adapter *adapter);
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2013-12-21 13:13:06 +07:00
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void i40evf_reset(struct i40evf_adapter *adapter);
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void i40evf_set_ethtool_ops(struct net_device *netdev);
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void i40evf_update_stats(struct i40evf_adapter *adapter);
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void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter);
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int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter);
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void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask);
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2015-03-27 14:12:09 +07:00
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void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter);
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void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter);
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2013-12-21 13:13:06 +07:00
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void i40e_napi_add_all(struct i40evf_adapter *adapter);
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void i40e_napi_del_all(struct i40evf_adapter *adapter);
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int i40evf_send_api_ver(struct i40evf_adapter *adapter);
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int i40evf_verify_api_ver(struct i40evf_adapter *adapter);
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int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter);
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int i40evf_get_vf_config(struct i40evf_adapter *adapter);
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void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush);
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void i40evf_configure_queues(struct i40evf_adapter *adapter);
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void i40evf_deconfigure_queues(struct i40evf_adapter *adapter);
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void i40evf_enable_queues(struct i40evf_adapter *adapter);
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void i40evf_disable_queues(struct i40evf_adapter *adapter);
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void i40evf_map_queues(struct i40evf_adapter *adapter);
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void i40evf_add_ether_addrs(struct i40evf_adapter *adapter);
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void i40evf_del_ether_addrs(struct i40evf_adapter *adapter);
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void i40evf_add_vlans(struct i40evf_adapter *adapter);
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void i40evf_del_vlans(struct i40evf_adapter *adapter);
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void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags);
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void i40evf_request_stats(struct i40evf_adapter *adapter);
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2014-02-21 10:29:05 +07:00
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void i40evf_request_reset(struct i40evf_adapter *adapter);
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2013-12-21 13:13:06 +07:00
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void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
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enum i40e_virtchnl_ops v_opcode,
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i40e_status v_retval, u8 *msg, u16 msglen);
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2015-10-28 03:15:06 +07:00
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int i40evf_config_rss(struct i40e_vsi *vsi, const u8 *seed, u8 *lut,
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u16 lut_size);
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2015-10-27 06:44:33 +07:00
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int i40evf_get_rss(struct i40e_vsi *vsi, const u8 *seed, u8 *lut,
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u16 lut_size);
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2013-12-21 13:13:06 +07:00
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#endif /* _I40EVF_H_ */
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