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linux_dsm_epyc7002/drivers/net/ethernet/intel/ixgbevf/ethtool.c
Kees Cook 42bc47b353 treewide: Use array_size() in vmalloc() 
The vmalloc() function has no 2-factor argument form, so multiplication
factors need to be wrapped in array_size(). This patch replaces cases of:

        vmalloc(a * b)

with:
        vmalloc(array_size(a, b))

as well as handling cases of:

        vmalloc(a * b * c)

with:

        vmalloc(array3_size(a, b, c))

This does, however, attempt to ignore constant size factors like:

        vmalloc(4 * 1024)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  vmalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  vmalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  vmalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
  vmalloc(
-	sizeof(TYPE) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT_ID
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT_ID
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

  vmalloc(
-	SIZE * COUNT
+	array_size(COUNT, SIZE)
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  vmalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  vmalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vmalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vmalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  vmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  vmalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  vmalloc(C1 * C2 * C3, ...)
|
  vmalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants.
@@
expression E1, E2;
constant C1, C2;
@@

(
  vmalloc(C1 * C2, ...)
|
  vmalloc(
-	E1 * E2
+	array_size(E1, E2)
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00

1003 lines
26 KiB
C
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// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 1999 - 2018 Intel Corporation. */
/* ethtool support for ixgbevf */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/types.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/vmalloc.h>
#include <linux/if_vlan.h>
#include <linux/uaccess.h>
#include "ixgbevf.h"
#define IXGBE_ALL_RAR_ENTRIES 16
enum {NETDEV_STATS, IXGBEVF_STATS};
struct ixgbe_stats {
char stat_string[ETH_GSTRING_LEN];
int type;
int sizeof_stat;
int stat_offset;
};
#define IXGBEVF_STAT(_name, _stat) { \
.stat_string = _name, \
.type = IXGBEVF_STATS, \
.sizeof_stat = FIELD_SIZEOF(struct ixgbevf_adapter, _stat), \
.stat_offset = offsetof(struct ixgbevf_adapter, _stat) \
}
#define IXGBEVF_NETDEV_STAT(_net_stat) { \
.stat_string = #_net_stat, \
.type = NETDEV_STATS, \
.sizeof_stat = FIELD_SIZEOF(struct net_device_stats, _net_stat), \
.stat_offset = offsetof(struct net_device_stats, _net_stat) \
}
static struct ixgbe_stats ixgbevf_gstrings_stats[] = {
IXGBEVF_NETDEV_STAT(rx_packets),
IXGBEVF_NETDEV_STAT(tx_packets),
IXGBEVF_NETDEV_STAT(rx_bytes),
IXGBEVF_NETDEV_STAT(tx_bytes),
IXGBEVF_STAT("tx_busy", tx_busy),
IXGBEVF_STAT("tx_restart_queue", restart_queue),
IXGBEVF_STAT("tx_timeout_count", tx_timeout_count),
IXGBEVF_NETDEV_STAT(multicast),
IXGBEVF_STAT("rx_csum_offload_errors", hw_csum_rx_error),
IXGBEVF_STAT("alloc_rx_page", alloc_rx_page),
IXGBEVF_STAT("alloc_rx_page_failed", alloc_rx_page_failed),
IXGBEVF_STAT("alloc_rx_buff_failed", alloc_rx_buff_failed),
};
#define IXGBEVF_QUEUE_STATS_LEN ( \
(((struct ixgbevf_adapter *)netdev_priv(netdev))->num_tx_queues + \
((struct ixgbevf_adapter *)netdev_priv(netdev))->num_xdp_queues + \
((struct ixgbevf_adapter *)netdev_priv(netdev))->num_rx_queues) * \
(sizeof(struct ixgbevf_stats) / sizeof(u64)))
#define IXGBEVF_GLOBAL_STATS_LEN ARRAY_SIZE(ixgbevf_gstrings_stats)
#define IXGBEVF_STATS_LEN (IXGBEVF_GLOBAL_STATS_LEN + IXGBEVF_QUEUE_STATS_LEN)
static const char ixgbe_gstrings_test[][ETH_GSTRING_LEN] = {
"Register test (offline)",
"Link test (on/offline)"
};
#define IXGBEVF_TEST_LEN (sizeof(ixgbe_gstrings_test) / ETH_GSTRING_LEN)
static const char ixgbevf_priv_flags_strings[][ETH_GSTRING_LEN] = {
#define IXGBEVF_PRIV_FLAGS_LEGACY_RX BIT(0)
"legacy-rx",
};
#define IXGBEVF_PRIV_FLAGS_STR_LEN ARRAY_SIZE(ixgbevf_priv_flags_strings)
static int ixgbevf_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *cmd)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
struct ixgbe_hw *hw = &adapter->hw;
u32 link_speed = 0;
bool link_up;
ethtool_link_ksettings_zero_link_mode(cmd, supported);
ethtool_link_ksettings_add_link_mode(cmd, supported, 10000baseT_Full);
cmd->base.autoneg = AUTONEG_DISABLE;
cmd->base.port = -1;
hw->mac.get_link_status = 1;
hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
if (link_up) {
__u32 speed = SPEED_10000;
switch (link_speed) {
case IXGBE_LINK_SPEED_10GB_FULL:
speed = SPEED_10000;
break;
case IXGBE_LINK_SPEED_1GB_FULL:
speed = SPEED_1000;
break;
case IXGBE_LINK_SPEED_100_FULL:
speed = SPEED_100;
break;
}
cmd->base.speed = speed;
cmd->base.duplex = DUPLEX_FULL;
} else {
cmd->base.speed = SPEED_UNKNOWN;
cmd->base.duplex = DUPLEX_UNKNOWN;
}
return 0;
}
static u32 ixgbevf_get_msglevel(struct net_device *netdev)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
return adapter->msg_enable;
}
static void ixgbevf_set_msglevel(struct net_device *netdev, u32 data)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
adapter->msg_enable = data;
}
#define IXGBE_GET_STAT(_A_, _R_) (_A_->stats._R_)
static int ixgbevf_get_regs_len(struct net_device *netdev)
{
#define IXGBE_REGS_LEN 45
return IXGBE_REGS_LEN * sizeof(u32);
}
static void ixgbevf_get_regs(struct net_device *netdev,
struct ethtool_regs *regs,
void *p)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
struct ixgbe_hw *hw = &adapter->hw;
u32 *regs_buff = p;
u32 regs_len = ixgbevf_get_regs_len(netdev);
u8 i;
memset(p, 0, regs_len);
/* generate a number suitable for ethtool's register version */
regs->version = (1u << 24) | (hw->revision_id << 16) | hw->device_id;
/* General Registers */
regs_buff[0] = IXGBE_READ_REG(hw, IXGBE_VFCTRL);
regs_buff[1] = IXGBE_READ_REG(hw, IXGBE_VFSTATUS);
regs_buff[2] = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
regs_buff[3] = IXGBE_READ_REG(hw, IXGBE_VFRXMEMWRAP);
regs_buff[4] = IXGBE_READ_REG(hw, IXGBE_VFFRTIMER);
/* Interrupt */
/* don't read EICR because it can clear interrupt causes, instead
* read EICS which is a shadow but doesn't clear EICR
*/
regs_buff[5] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
regs_buff[6] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
regs_buff[7] = IXGBE_READ_REG(hw, IXGBE_VTEIMS);
regs_buff[8] = IXGBE_READ_REG(hw, IXGBE_VTEIMC);
regs_buff[9] = IXGBE_READ_REG(hw, IXGBE_VTEIAC);
regs_buff[10] = IXGBE_READ_REG(hw, IXGBE_VTEIAM);
regs_buff[11] = IXGBE_READ_REG(hw, IXGBE_VTEITR(0));
regs_buff[12] = IXGBE_READ_REG(hw, IXGBE_VTIVAR(0));
regs_buff[13] = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);
/* Receive DMA */
for (i = 0; i < 2; i++)
regs_buff[14 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAL(i));
for (i = 0; i < 2; i++)
regs_buff[16 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAH(i));
for (i = 0; i < 2; i++)
regs_buff[18 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDLEN(i));
for (i = 0; i < 2; i++)
regs_buff[20 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDH(i));
for (i = 0; i < 2; i++)
regs_buff[22 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDT(i));
for (i = 0; i < 2; i++)
regs_buff[24 + i] = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
for (i = 0; i < 2; i++)
regs_buff[26 + i] = IXGBE_READ_REG(hw, IXGBE_VFSRRCTL(i));
/* Receive */
regs_buff[28] = IXGBE_READ_REG(hw, IXGBE_VFPSRTYPE);
/* Transmit */
for (i = 0; i < 2; i++)
regs_buff[29 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAL(i));
for (i = 0; i < 2; i++)
regs_buff[31 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAH(i));
for (i = 0; i < 2; i++)
regs_buff[33 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDLEN(i));
for (i = 0; i < 2; i++)
regs_buff[35 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDH(i));
for (i = 0; i < 2; i++)
regs_buff[37 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDT(i));
for (i = 0; i < 2; i++)
regs_buff[39 + i] = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
for (i = 0; i < 2; i++)
regs_buff[41 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAL(i));
for (i = 0; i < 2; i++)
regs_buff[43 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAH(i));
}
static void ixgbevf_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
strlcpy(drvinfo->driver, ixgbevf_driver_name, sizeof(drvinfo->driver));
strlcpy(drvinfo->version, ixgbevf_driver_version,
sizeof(drvinfo->version));
strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
sizeof(drvinfo->bus_info));
drvinfo->n_priv_flags = IXGBEVF_PRIV_FLAGS_STR_LEN;
}
static void ixgbevf_get_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
ring->rx_max_pending = IXGBEVF_MAX_RXD;
ring->tx_max_pending = IXGBEVF_MAX_TXD;
ring->rx_pending = adapter->rx_ring_count;
ring->tx_pending = adapter->tx_ring_count;
}
static int ixgbevf_set_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
struct ixgbevf_ring *tx_ring = NULL, *rx_ring = NULL;
u32 new_rx_count, new_tx_count;
int i, j, err = 0;
if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
return -EINVAL;
new_tx_count = max_t(u32, ring->tx_pending, IXGBEVF_MIN_TXD);
new_tx_count = min_t(u32, new_tx_count, IXGBEVF_MAX_TXD);
new_tx_count = ALIGN(new_tx_count, IXGBE_REQ_TX_DESCRIPTOR_MULTIPLE);
new_rx_count = max_t(u32, ring->rx_pending, IXGBEVF_MIN_RXD);
new_rx_count = min_t(u32, new_rx_count, IXGBEVF_MAX_RXD);
new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);
/* if nothing to do return success */
if ((new_tx_count == adapter->tx_ring_count) &&
(new_rx_count == adapter->rx_ring_count))
return 0;
while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
usleep_range(1000, 2000);
if (!netif_running(adapter->netdev)) {
for (i = 0; i < adapter->num_tx_queues; i++)
adapter->tx_ring[i]->count = new_tx_count;
for (i = 0; i < adapter->num_xdp_queues; i++)
adapter->xdp_ring[i]->count = new_tx_count;
for (i = 0; i < adapter->num_rx_queues; i++)
adapter->rx_ring[i]->count = new_rx_count;
adapter->tx_ring_count = new_tx_count;
adapter->xdp_ring_count = new_tx_count;
adapter->rx_ring_count = new_rx_count;
goto clear_reset;
}
if (new_tx_count != adapter->tx_ring_count) {
tx_ring = vmalloc(array_size(sizeof(*tx_ring),
adapter->num_tx_queues +
adapter->num_xdp_queues));
if (!tx_ring) {
err = -ENOMEM;
goto clear_reset;
}
for (i = 0; i < adapter->num_tx_queues; i++) {
/* clone ring and setup updated count */
tx_ring[i] = *adapter->tx_ring[i];
tx_ring[i].count = new_tx_count;
err = ixgbevf_setup_tx_resources(&tx_ring[i]);
if (err) {
while (i) {
i--;
ixgbevf_free_tx_resources(&tx_ring[i]);
}
vfree(tx_ring);
tx_ring = NULL;
goto clear_reset;
}
}
for (j = 0; j < adapter->num_xdp_queues; i++, j++) {
/* clone ring and setup updated count */
tx_ring[i] = *adapter->xdp_ring[j];
tx_ring[i].count = new_tx_count;
err = ixgbevf_setup_tx_resources(&tx_ring[i]);
if (err) {
while (i) {
i--;
ixgbevf_free_tx_resources(&tx_ring[i]);
}
vfree(tx_ring);
tx_ring = NULL;
goto clear_reset;
}
}
}
if (new_rx_count != adapter->rx_ring_count) {
rx_ring = vmalloc(array_size(sizeof(*rx_ring),
adapter->num_rx_queues));
if (!rx_ring) {
err = -ENOMEM;
goto clear_reset;
}
for (i = 0; i < adapter->num_rx_queues; i++) {
/* clone ring and setup updated count */
rx_ring[i] = *adapter->rx_ring[i];
/* Clear copied XDP RX-queue info */
memset(&rx_ring[i].xdp_rxq, 0,
sizeof(rx_ring[i].xdp_rxq));
rx_ring[i].count = new_rx_count;
err = ixgbevf_setup_rx_resources(adapter, &rx_ring[i]);
if (err) {
while (i) {
i--;
ixgbevf_free_rx_resources(&rx_ring[i]);
}
vfree(rx_ring);
rx_ring = NULL;
goto clear_reset;
}
}
}
/* bring interface down to prepare for update */
ixgbevf_down(adapter);
/* Tx */
if (tx_ring) {
for (i = 0; i < adapter->num_tx_queues; i++) {
ixgbevf_free_tx_resources(adapter->tx_ring[i]);
*adapter->tx_ring[i] = tx_ring[i];
}
adapter->tx_ring_count = new_tx_count;
for (j = 0; j < adapter->num_xdp_queues; i++, j++) {
ixgbevf_free_tx_resources(adapter->xdp_ring[j]);
*adapter->xdp_ring[j] = tx_ring[i];
}
adapter->xdp_ring_count = new_tx_count;
vfree(tx_ring);
tx_ring = NULL;
}
/* Rx */
if (rx_ring) {
for (i = 0; i < adapter->num_rx_queues; i++) {
ixgbevf_free_rx_resources(adapter->rx_ring[i]);
*adapter->rx_ring[i] = rx_ring[i];
}
adapter->rx_ring_count = new_rx_count;
vfree(rx_ring);
rx_ring = NULL;
}
/* restore interface using new values */
ixgbevf_up(adapter);
clear_reset:
/* free Tx resources if Rx error is encountered */
if (tx_ring) {
for (i = 0;
i < adapter->num_tx_queues + adapter->num_xdp_queues; i++)
ixgbevf_free_tx_resources(&tx_ring[i]);
vfree(tx_ring);
}
clear_bit(__IXGBEVF_RESETTING, &adapter->state);
return err;
}
static int ixgbevf_get_sset_count(struct net_device *netdev, int stringset)
{
switch (stringset) {
case ETH_SS_TEST:
return IXGBEVF_TEST_LEN;
case ETH_SS_STATS:
return IXGBEVF_STATS_LEN;
case ETH_SS_PRIV_FLAGS:
return IXGBEVF_PRIV_FLAGS_STR_LEN;
default:
return -EINVAL;
}
}
static void ixgbevf_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats, u64 *data)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
struct rtnl_link_stats64 temp;
const struct rtnl_link_stats64 *net_stats;
unsigned int start;
struct ixgbevf_ring *ring;
int i, j;
char *p;
ixgbevf_update_stats(adapter);
net_stats = dev_get_stats(netdev, &temp);
for (i = 0; i < IXGBEVF_GLOBAL_STATS_LEN; i++) {
switch (ixgbevf_gstrings_stats[i].type) {
case NETDEV_STATS:
p = (char *)net_stats +
ixgbevf_gstrings_stats[i].stat_offset;
break;
case IXGBEVF_STATS:
p = (char *)adapter +
ixgbevf_gstrings_stats[i].stat_offset;
break;
default:
data[i] = 0;
continue;
}
data[i] = (ixgbevf_gstrings_stats[i].sizeof_stat ==
sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
}
/* populate Tx queue data */
for (j = 0; j < adapter->num_tx_queues; j++) {
ring = adapter->tx_ring[j];
if (!ring) {
data[i++] = 0;
data[i++] = 0;
continue;
}
do {
start = u64_stats_fetch_begin_irq(&ring->syncp);
data[i] = ring->stats.packets;
data[i + 1] = ring->stats.bytes;
} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
i += 2;
}
/* populate XDP queue data */
for (j = 0; j < adapter->num_xdp_queues; j++) {
ring = adapter->xdp_ring[j];
if (!ring) {
data[i++] = 0;
data[i++] = 0;
continue;
}
do {
start = u64_stats_fetch_begin_irq(&ring->syncp);
data[i] = ring->stats.packets;
data[i + 1] = ring->stats.bytes;
} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
i += 2;
}
/* populate Rx queue data */
for (j = 0; j < adapter->num_rx_queues; j++) {
ring = adapter->rx_ring[j];
if (!ring) {
data[i++] = 0;
data[i++] = 0;
continue;
}
do {
start = u64_stats_fetch_begin_irq(&ring->syncp);
data[i] = ring->stats.packets;
data[i + 1] = ring->stats.bytes;
} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
i += 2;
}
}
static void ixgbevf_get_strings(struct net_device *netdev, u32 stringset,
u8 *data)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
char *p = (char *)data;
int i;
switch (stringset) {
case ETH_SS_TEST:
memcpy(data, *ixgbe_gstrings_test,
IXGBEVF_TEST_LEN * ETH_GSTRING_LEN);
break;
case ETH_SS_STATS:
for (i = 0; i < IXGBEVF_GLOBAL_STATS_LEN; i++) {
memcpy(p, ixgbevf_gstrings_stats[i].stat_string,
ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
for (i = 0; i < adapter->num_tx_queues; i++) {
sprintf(p, "tx_queue_%u_packets", i);
p += ETH_GSTRING_LEN;
sprintf(p, "tx_queue_%u_bytes", i);
p += ETH_GSTRING_LEN;
}
for (i = 0; i < adapter->num_xdp_queues; i++) {
sprintf(p, "xdp_queue_%u_packets", i);
p += ETH_GSTRING_LEN;
sprintf(p, "xdp_queue_%u_bytes", i);
p += ETH_GSTRING_LEN;
}
for (i = 0; i < adapter->num_rx_queues; i++) {
sprintf(p, "rx_queue_%u_packets", i);
p += ETH_GSTRING_LEN;
sprintf(p, "rx_queue_%u_bytes", i);
p += ETH_GSTRING_LEN;
}
break;
case ETH_SS_PRIV_FLAGS:
memcpy(data, ixgbevf_priv_flags_strings,
IXGBEVF_PRIV_FLAGS_STR_LEN * ETH_GSTRING_LEN);
break;
}
}
static int ixgbevf_link_test(struct ixgbevf_adapter *adapter, u64 *data)
{
struct ixgbe_hw *hw = &adapter->hw;
bool link_up;
u32 link_speed = 0;
*data = 0;
hw->mac.ops.check_link(hw, &link_speed, &link_up, true);
if (!link_up)
*data = 1;
return *data;
}
/* ethtool register test data */
struct ixgbevf_reg_test {
u16 reg;
u8 array_len;
u8 test_type;
u32 mask;
u32 write;
};
/* In the hardware, registers are laid out either singly, in arrays
* spaced 0x40 bytes apart, or in contiguous tables. We assume
* most tests take place on arrays or single registers (handled
* as a single-element array) and special-case the tables.
* Table tests are always pattern tests.
*
* We also make provision for some required setup steps by specifying
* registers to be written without any read-back testing.
*/
#define PATTERN_TEST 1
#define SET_READ_TEST 2
#define WRITE_NO_TEST 3
#define TABLE32_TEST 4
#define TABLE64_TEST_LO 5
#define TABLE64_TEST_HI 6
/* default VF register test */
static const struct ixgbevf_reg_test reg_test_vf[] = {
{ IXGBE_VFRDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFF80 },
{ IXGBE_VFRDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
{ IXGBE_VFRDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
{ IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, IXGBE_RXDCTL_ENABLE },
{ IXGBE_VFRDT(0), 2, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
{ IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, 0 },
{ IXGBE_VFTDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
{ IXGBE_VFTDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
{ IXGBE_VFTDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFF80 },
{ .reg = 0 }
};
static const u32 register_test_patterns[] = {
0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF
};
static bool reg_pattern_test(struct ixgbevf_adapter *adapter, u64 *data,
int reg, u32 mask, u32 write)
{
u32 pat, val, before;
if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
*data = 1;
return true;
}
for (pat = 0; pat < ARRAY_SIZE(register_test_patterns); pat++) {
before = ixgbevf_read_reg(&adapter->hw, reg);
ixgbe_write_reg(&adapter->hw, reg,
register_test_patterns[pat] & write);
val = ixgbevf_read_reg(&adapter->hw, reg);
if (val != (register_test_patterns[pat] & write & mask)) {
hw_dbg(&adapter->hw,
"pattern test reg %04X failed: got 0x%08X expected 0x%08X\n",
reg, val,
register_test_patterns[pat] & write & mask);
*data = reg;
ixgbe_write_reg(&adapter->hw, reg, before);
return true;
}
ixgbe_write_reg(&adapter->hw, reg, before);
}
return false;
}
static bool reg_set_and_check(struct ixgbevf_adapter *adapter, u64 *data,
int reg, u32 mask, u32 write)
{
u32 val, before;
if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
*data = 1;
return true;
}
before = ixgbevf_read_reg(&adapter->hw, reg);
ixgbe_write_reg(&adapter->hw, reg, write & mask);
val = ixgbevf_read_reg(&adapter->hw, reg);
if ((write & mask) != (val & mask)) {
pr_err("set/check reg %04X test failed: got 0x%08X expected 0x%08X\n",
reg, (val & mask), write & mask);
*data = reg;
ixgbe_write_reg(&adapter->hw, reg, before);
return true;
}
ixgbe_write_reg(&adapter->hw, reg, before);
return false;
}
static int ixgbevf_reg_test(struct ixgbevf_adapter *adapter, u64 *data)
{
const struct ixgbevf_reg_test *test;
u32 i;
if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
dev_err(&adapter->pdev->dev,
"Adapter removed - register test blocked\n");
*data = 1;
return 1;
}
test = reg_test_vf;
/* Perform the register test, looping through the test table
* until we either fail or reach the null entry.
*/
while (test->reg) {
for (i = 0; i < test->array_len; i++) {
bool b = false;
switch (test->test_type) {
case PATTERN_TEST:
b = reg_pattern_test(adapter, data,
test->reg + (i * 0x40),
test->mask,
test->write);
break;
case SET_READ_TEST:
b = reg_set_and_check(adapter, data,
test->reg + (i * 0x40),
test->mask,
test->write);
break;
case WRITE_NO_TEST:
ixgbe_write_reg(&adapter->hw,
test->reg + (i * 0x40),
test->write);
break;
case TABLE32_TEST:
b = reg_pattern_test(adapter, data,
test->reg + (i * 4),
test->mask,
test->write);
break;
case TABLE64_TEST_LO:
b = reg_pattern_test(adapter, data,
test->reg + (i * 8),
test->mask,
test->write);
break;
case TABLE64_TEST_HI:
b = reg_pattern_test(adapter, data,
test->reg + 4 + (i * 8),
test->mask,
test->write);
break;
}
if (b)
return 1;
}
test++;
}
*data = 0;
return *data;
}
static void ixgbevf_diag_test(struct net_device *netdev,
struct ethtool_test *eth_test, u64 *data)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
bool if_running = netif_running(netdev);
if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
dev_err(&adapter->pdev->dev,
"Adapter removed - test blocked\n");
data[0] = 1;
data[1] = 1;
eth_test->flags |= ETH_TEST_FL_FAILED;
return;
}
set_bit(__IXGBEVF_TESTING, &adapter->state);
if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
/* Offline tests */
hw_dbg(&adapter->hw, "offline testing starting\n");
/* Link test performed before hardware reset so autoneg doesn't
* interfere with test result
*/
if (ixgbevf_link_test(adapter, &data[1]))
eth_test->flags |= ETH_TEST_FL_FAILED;
if (if_running)
/* indicate we're in test mode */
ixgbevf_close(netdev);
else
ixgbevf_reset(adapter);
hw_dbg(&adapter->hw, "register testing starting\n");
if (ixgbevf_reg_test(adapter, &data[0]))
eth_test->flags |= ETH_TEST_FL_FAILED;
ixgbevf_reset(adapter);
clear_bit(__IXGBEVF_TESTING, &adapter->state);
if (if_running)
ixgbevf_open(netdev);
} else {
hw_dbg(&adapter->hw, "online testing starting\n");
/* Online tests */
if (ixgbevf_link_test(adapter, &data[1]))
eth_test->flags |= ETH_TEST_FL_FAILED;
/* Online tests aren't run; pass by default */
data[0] = 0;
clear_bit(__IXGBEVF_TESTING, &adapter->state);
}
msleep_interruptible(4 * 1000);
}
static int ixgbevf_nway_reset(struct net_device *netdev)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
if (netif_running(netdev))
ixgbevf_reinit_locked(adapter);
return 0;
}
static int ixgbevf_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
/* only valid if in constant ITR mode */
if (adapter->rx_itr_setting <= 1)
ec->rx_coalesce_usecs = adapter->rx_itr_setting;
else
ec->rx_coalesce_usecs = adapter->rx_itr_setting >> 2;
/* if in mixed Tx/Rx queues per vector mode, report only Rx settings */
if (adapter->q_vector[0]->tx.count && adapter->q_vector[0]->rx.count)
return 0;
/* only valid if in constant ITR mode */
if (adapter->tx_itr_setting <= 1)
ec->tx_coalesce_usecs = adapter->tx_itr_setting;
else
ec->tx_coalesce_usecs = adapter->tx_itr_setting >> 2;
return 0;
}
static int ixgbevf_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ec)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
struct ixgbevf_q_vector *q_vector;
int num_vectors, i;
u16 tx_itr_param, rx_itr_param;
/* don't accept Tx specific changes if we've got mixed RxTx vectors */
if (adapter->q_vector[0]->tx.count &&
adapter->q_vector[0]->rx.count && ec->tx_coalesce_usecs)
return -EINVAL;
if ((ec->rx_coalesce_usecs > (IXGBE_MAX_EITR >> 2)) ||
(ec->tx_coalesce_usecs > (IXGBE_MAX_EITR >> 2)))
return -EINVAL;
if (ec->rx_coalesce_usecs > 1)
adapter->rx_itr_setting = ec->rx_coalesce_usecs << 2;
else
adapter->rx_itr_setting = ec->rx_coalesce_usecs;
if (adapter->rx_itr_setting == 1)
rx_itr_param = IXGBE_20K_ITR;
else
rx_itr_param = adapter->rx_itr_setting;
if (ec->tx_coalesce_usecs > 1)
adapter->tx_itr_setting = ec->tx_coalesce_usecs << 2;
else
adapter->tx_itr_setting = ec->tx_coalesce_usecs;
if (adapter->tx_itr_setting == 1)
tx_itr_param = IXGBE_12K_ITR;
else
tx_itr_param = adapter->tx_itr_setting;
num_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
for (i = 0; i < num_vectors; i++) {
q_vector = adapter->q_vector[i];
if (q_vector->tx.count && !q_vector->rx.count)
/* Tx only */
q_vector->itr = tx_itr_param;
else
/* Rx only or mixed */
q_vector->itr = rx_itr_param;
ixgbevf_write_eitr(q_vector);
}
return 0;
}
static int ixgbevf_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
u32 *rules __always_unused)
{
struct ixgbevf_adapter *adapter = netdev_priv(dev);
switch (info->cmd) {
case ETHTOOL_GRXRINGS:
info->data = adapter->num_rx_queues;
return 0;
default:
hw_dbg(&adapter->hw, "Command parameters not supported\n");
return -EOPNOTSUPP;
}
}
static u32 ixgbevf_get_rxfh_indir_size(struct net_device *netdev)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
if (adapter->hw.mac.type >= ixgbe_mac_X550_vf)
return IXGBEVF_X550_VFRETA_SIZE;
return IXGBEVF_82599_RETA_SIZE;
}
static u32 ixgbevf_get_rxfh_key_size(struct net_device *netdev)
{
return IXGBEVF_RSS_HASH_KEY_SIZE;
}
static int ixgbevf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
u8 *hfunc)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
int err = 0;
if (hfunc)
*hfunc = ETH_RSS_HASH_TOP;
if (adapter->hw.mac.type >= ixgbe_mac_X550_vf) {
if (key)
memcpy(key, adapter->rss_key,
ixgbevf_get_rxfh_key_size(netdev));
if (indir) {
int i;
for (i = 0; i < IXGBEVF_X550_VFRETA_SIZE; i++)
indir[i] = adapter->rss_indir_tbl[i];
}
} else {
/* If neither indirection table nor hash key was requested
* - just return a success avoiding taking any locks.
*/
if (!indir && !key)
return 0;
spin_lock_bh(&adapter->mbx_lock);
if (indir)
err = ixgbevf_get_reta_locked(&adapter->hw, indir,
adapter->num_rx_queues);
if (!err && key)
err = ixgbevf_get_rss_key_locked(&adapter->hw, key);
spin_unlock_bh(&adapter->mbx_lock);
}
return err;
}
static u32 ixgbevf_get_priv_flags(struct net_device *netdev)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
u32 priv_flags = 0;
if (adapter->flags & IXGBEVF_FLAGS_LEGACY_RX)
priv_flags |= IXGBEVF_PRIV_FLAGS_LEGACY_RX;
return priv_flags;
}
static int ixgbevf_set_priv_flags(struct net_device *netdev, u32 priv_flags)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
unsigned int flags = adapter->flags;
flags &= ~IXGBEVF_FLAGS_LEGACY_RX;
if (priv_flags & IXGBEVF_PRIV_FLAGS_LEGACY_RX)
flags |= IXGBEVF_FLAGS_LEGACY_RX;
if (flags != adapter->flags) {
adapter->flags = flags;
/* reset interface to repopulate queues */
if (netif_running(netdev))
ixgbevf_reinit_locked(adapter);
}
return 0;
}
static const struct ethtool_ops ixgbevf_ethtool_ops = {
.get_drvinfo = ixgbevf_get_drvinfo,
.get_regs_len = ixgbevf_get_regs_len,
.get_regs = ixgbevf_get_regs,
.nway_reset = ixgbevf_nway_reset,
.get_link = ethtool_op_get_link,
.get_ringparam = ixgbevf_get_ringparam,
.set_ringparam = ixgbevf_set_ringparam,
.get_msglevel = ixgbevf_get_msglevel,
.set_msglevel = ixgbevf_set_msglevel,
.self_test = ixgbevf_diag_test,
.get_sset_count = ixgbevf_get_sset_count,
.get_strings = ixgbevf_get_strings,
.get_ethtool_stats = ixgbevf_get_ethtool_stats,
.get_coalesce = ixgbevf_get_coalesce,
.set_coalesce = ixgbevf_set_coalesce,
.get_rxnfc = ixgbevf_get_rxnfc,
.get_rxfh_indir_size = ixgbevf_get_rxfh_indir_size,
.get_rxfh_key_size = ixgbevf_get_rxfh_key_size,
.get_rxfh = ixgbevf_get_rxfh,
.get_link_ksettings = ixgbevf_get_link_ksettings,
.get_priv_flags = ixgbevf_get_priv_flags,
.set_priv_flags = ixgbevf_set_priv_flags,
};
void ixgbevf_set_ethtool_ops(struct net_device *netdev)
{
netdev->ethtool_ops = &ixgbevf_ethtool_ops;
}
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