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/*
* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include "mlx4_en.h"
#include <linux/mlx4/driver.h>
#include <linux/mlx4/device.h>
#include <linux/mlx4/cmd.h>
#include <linux/mlx4/cq.h>
#include <linux/delay.h>
#include <net/ethernet.h>
#include <net/if_vlan_var.h>
#include <sys/sockio.h>
static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv);
static void mlx4_en_vlan_rx_add_vid(void *arg, struct net_device *dev, u16 vid)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
int idx;
u8 field;
if ((vid == 0) || (vid > 4095)) /* Invalid */
return;
en_dbg(HW, priv, "adding VLAN:%d\n", vid);
idx = vid >> 5;
field = 1 << (vid & 0x1f);
spin_lock(&priv->vlan_lock);
priv->vlgrp_modified = true;
if (priv->vlan_unregister[idx] & field)
priv->vlan_unregister[idx] &= ~field;
else
priv->vlan_register[idx] |= field;
priv->vlans[idx] |= field;
spin_unlock(&priv->vlan_lock);
}
static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
int idx;
u8 field;
if ((vid == 0) || (vid > 4095)) /* Invalid */
return;
en_dbg(HW, priv, "Killing VID:%d\n", vid);
idx = vid >> 5;
field = 1 << (vid & 0x1f);
spin_lock(&priv->vlan_lock);
priv->vlgrp_modified = true;
if (priv->vlan_register[idx] & field)
priv->vlan_register[idx] &= ~field;
else
priv->vlan_unregister[idx] |= field;
priv->vlans[idx] &= ~field;
spin_unlock(&priv->vlan_lock);
}
u64 mlx4_en_mac_to_u64(u8 *addr)
{
u64 mac = 0;
int i;
for (i = 0; i < ETHER_ADDR_LEN; i++) {
mac <<= 8;
mac |= addr[i];
}
return mac;
}
static int mlx4_en_cache_mclist(struct net_device *dev, u64 **mcaddrp)
{
struct ifmultiaddr *ifma;;
u64 *mcaddr;
int cnt;
int i;
*mcaddrp = NULL;
restart:
cnt = 0;
if_maddr_rlock(dev);
TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
ETHER_ADDR_LEN)
continue;
cnt++;
}
if_maddr_runlock(dev);
if (cnt == 0)
return (0);
mcaddr = kmalloc(sizeof(u64) * cnt, GFP_KERNEL);
if (mcaddr == NULL)
return (0);
i = 0;
if_maddr_rlock(dev);
TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
ETHER_ADDR_LEN)
continue;
/* Make sure the list didn't grow. */
if (i == cnt) {
if_maddr_runlock(dev);
kfree(mcaddr);
goto restart;
}
mcaddr[i++] = mlx4_en_mac_to_u64(
LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
}
if_maddr_runlock(dev);
*mcaddrp = mcaddr;
return (i);
}
static void mlx4_en_set_multicast(struct net_device *dev)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
if (!priv->port_up)
return;
queue_work(priv->mdev->workqueue, &priv->mcast_task);
}
static void mlx4_en_do_set_multicast(struct work_struct *work)
{
struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
mcast_task);
struct net_device *dev = priv->dev;
struct mlx4_en_dev *mdev = priv->mdev;
int err;
mutex_lock(&mdev->state_lock);
if (!mdev->device_up) {
en_dbg(HW, priv, "Card is not up, "
"ignoring multicast change.\n");
goto out;
}
if (!priv->port_up) {
en_dbg(HW, priv, "Port is down, "
"ignoring multicast change.\n");
goto out;
}
/*
* Promsicuous mode: disable all filters
*/
if (dev->if_flags & IFF_PROMISC) {
if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
priv->flags |= MLX4_EN_FLAG_PROMISC;
/* Enable promiscouos mode */
err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
priv->base_qpn, 1);
if (err)
en_err(priv, "Failed enabling "
"promiscous mode\n");
/* Disable port multicast filter (unconditionally) */
err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
0, MLX4_MCAST_DISABLE);
if (err)
en_err(priv, "Failed disabling "
"multicast filter\n");
/* Disable port VLAN filter */
err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, NULL);
if (err)
en_err(priv, "Failed disabling VLAN filter\n");
}
goto out;
}
/*
* Not in promiscous mode
*/
if (priv->flags & MLX4_EN_FLAG_PROMISC) {
priv->flags &= ~MLX4_EN_FLAG_PROMISC;
/* Disable promiscouos mode */
err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
priv->base_qpn, 0);
if (err)
en_err(priv, "Failed disabling promiscous mode\n");
/* Enable port VLAN filter */
err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlans);
if (err)
en_err(priv, "Failed enabling VLAN filter\n");
}
/* Enable/disable the multicast filter according to IFF_ALLMULTI */
if (dev->if_flags & IFF_ALLMULTI) {
err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
0, MLX4_MCAST_DISABLE);
if (err)
en_err(priv, "Failed disabling multicast filter\n");
} else {
u64 *mcaddr;
int mccount;
int i;
err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
0, MLX4_MCAST_DISABLE);
if (err)
en_err(priv, "Failed disabling multicast filter\n");
/* Flush mcast filter and init it with broadcast address */
mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1, MLX4_MCAST_CONFIG);
/* Update multicast list - we cache all addresses so they won't
* change while HW is updated holding the command semaphor */
mccount = mlx4_en_cache_mclist(dev, &mcaddr);
for (i = 0; i < mccount; i++)
mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
mcaddr[i], 0, MLX4_MCAST_CONFIG);
err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
0, MLX4_MCAST_ENABLE);
if (err)
en_err(priv, "Failed enabling multicast filter\n");
kfree(mcaddr);
}
out:
mutex_unlock(&mdev->state_lock);
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static void mlx4_en_netpoll(struct net_device *dev)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_cq *cq;
unsigned long flags;
int i;
for (i = 0; i < priv->rx_ring_num; i++) {
cq = &priv->rx_cq[i];
spin_lock_irqsave(&cq->lock, flags);
napi_synchronize(&cq->napi);
mlx4_en_process_rx_cq(dev, cq, 0);
spin_unlock_irqrestore(&cq->lock, flags);
}
}
#endif
static void mlx4_en_watchdog_timeout(void *arg)
{
struct mlx4_en_priv *priv = arg;
struct mlx4_en_dev *mdev = priv->mdev;
en_dbg(DRV, priv, "Scheduling watchdog\n");
queue_work(mdev->workqueue, &priv->watchdog_task);
if (priv->port_up)
callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
mlx4_en_watchdog_timeout, priv);
}
/* XXX This clears user settings in too many cases. */
static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
{
struct mlx4_en_cq *cq;
int i;
/* If we haven't received a specific coalescing setting
* (module param), we set the moderation paramters as follows:
* - moder_cnt is set to the number of mtu sized packets to
* satisfy our coelsing target.
* - moder_time is set to a fixed value.
*/
priv->rx_frames = MLX4_EN_RX_COAL_TARGET / priv->dev->if_mtu + 1;
priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
en_dbg(INTR, priv, "Default coalesing params for mtu:%ld - "
"rx_frames:%d rx_usecs:%d\n",
priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
/* Setup cq moderation params */
for (i = 0; i < priv->rx_ring_num; i++) {
cq = &priv->rx_cq[i];
cq->moder_cnt = priv->rx_frames;
cq->moder_time = priv->rx_usecs;
}
for (i = 0; i < priv->tx_ring_num; i++) {
cq = &priv->tx_cq[i];
cq->moder_cnt = MLX4_EN_TX_COAL_PKTS;
cq->moder_time = MLX4_EN_TX_COAL_TIME;
}
/* Reset auto-moderation params */
priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
priv->adaptive_rx_coal = 1;
priv->last_moder_time = MLX4_EN_AUTO_CONF;
priv->last_moder_jiffies = 0;
priv->last_moder_packets = 0;
priv->last_moder_tx_packets = 0;
priv->last_moder_bytes = 0;
}
static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
{
unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
struct mlx4_en_cq *cq;
unsigned long packets;
unsigned long rate;
unsigned long avg_pkt_size;
unsigned long rx_packets;
unsigned long rx_bytes;
unsigned long tx_packets;
unsigned long tx_pkt_diff;
unsigned long rx_pkt_diff;
int moder_time;
int i, err;
if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
return;
spin_lock(&priv->stats_lock);
rx_packets = priv->dev->if_ipackets;
rx_bytes = priv->dev->if_ibytes;
tx_packets = priv->dev->if_opackets;
spin_unlock(&priv->stats_lock);
if (!priv->last_moder_jiffies || !period)
goto out;
tx_pkt_diff = ((unsigned long) (tx_packets -
priv->last_moder_tx_packets));
rx_pkt_diff = ((unsigned long) (rx_packets -
priv->last_moder_packets));
packets = max(tx_pkt_diff, rx_pkt_diff);
rate = packets * HZ / period;
avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
priv->last_moder_bytes)) / packets : 0;
/* Apply auto-moderation only when packet rate exceeds a rate that
* it matters */
if (rate > MLX4_EN_RX_RATE_THRESH) {
/* If tx and rx packet rates are not balanced, assume that
* traffic is mainly BW bound and apply maximum moderation.
* Otherwise, moderate according to packet rate */
if (2 * tx_pkt_diff > 3 * rx_pkt_diff ||
2 * rx_pkt_diff > 3 * tx_pkt_diff) {
moder_time = priv->rx_usecs_high;
} else {
if (rate < priv->pkt_rate_low ||
avg_pkt_size < MLX4_EN_AVG_PKT_SMALL)
moder_time = priv->rx_usecs_low;
else if (rate > priv->pkt_rate_high)
moder_time = priv->rx_usecs_high;
else
moder_time = (rate - priv->pkt_rate_low) *
(priv->rx_usecs_high - priv->rx_usecs_low) /
(priv->pkt_rate_high - priv->pkt_rate_low) +
priv->rx_usecs_low;
}
} else {
/* When packet rate is low, use default moderation rather than
* 0 to prevent interrupt storms if traffic suddenly increases */
moder_time = priv->rx_usecs;
}
en_dbg(INTR, priv, "tx rate:%lu rx_rate:%lu\n",
tx_pkt_diff * HZ / period, rx_pkt_diff * HZ / period);
en_dbg(INTR, priv, "Rx moder_time changed from:%d to %d period:%lu "
"[jiff] packets:%lu avg_pkt_size:%lu rate:%lu [p/s])\n",
priv->last_moder_time, moder_time, period, packets,
avg_pkt_size, rate);
if (moder_time != priv->last_moder_time) {
priv->last_moder_time = moder_time;
for (i = 0; i < priv->rx_ring_num; i++) {
cq = &priv->rx_cq[i];
cq->moder_time = moder_time;
err = mlx4_en_set_cq_moder(priv, cq);
if (err) {
en_err(priv, "Failed modifying moderation for cq:%d\n", i);
break;
}
}
}
out:
priv->last_moder_packets = rx_packets;
priv->last_moder_tx_packets = tx_packets;
priv->last_moder_bytes = rx_bytes;
priv->last_moder_jiffies = jiffies;
}
static void mlx4_en_handle_vlans(struct mlx4_en_priv *priv)
{
u8 vlan_register[VLAN_FLTR_SIZE];
u8 vlan_unregister[VLAN_FLTR_SIZE];
int i, j, idx;
u16 vid;
/* cache the vlan data for processing
* done under lock to avoid changes during work */
spin_lock(&priv->vlan_lock);
for (i = 0; i < VLAN_FLTR_SIZE; i++) {
vlan_register[i] = priv->vlan_register[i];
priv->vlan_register[i] = 0;
vlan_unregister[i] = priv->vlan_unregister[i];
priv->vlan_unregister[i] = 0;
}
priv->vlgrp_modified = false;
spin_unlock(&priv->vlan_lock);
/* Configure the vlan filter
* The vlgrp is updated with all the vids that need to be allowed */
if (mlx4_SET_VLAN_FLTR(priv->mdev->dev, priv->port, priv->vlans))
en_err(priv, "Failed configuring VLAN filter\n");
/* Configure the VLAN table */
for (i = 0; i < VLAN_FLTR_SIZE; i++) {
for (j = 0; j < 32; j++) {
vid = (i << 5) + j;
if (vlan_register[i] & (1 << j))
if (mlx4_register_vlan(priv->mdev->dev, priv->port, vid, &idx))
en_dbg(HW, priv, "failed registering vlan %d\n", vid);
if (vlan_unregister[i] & (1 << j)) {
if (!mlx4_find_cached_vlan(priv->mdev->dev, priv->port, vid, &idx))
mlx4_unregister_vlan(priv->mdev->dev, priv->port, idx);
else
en_dbg(HW, priv, "could not find vid %d in cache\n", vid);
}
}
}
}
static void mlx4_en_do_get_stats(struct work_struct *work)
{
struct delayed_work *delay = to_delayed_work(work);
struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
stats_task);
struct mlx4_en_dev *mdev = priv->mdev;
int err;
err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
if (err)
en_dbg(HW, priv, "Could not update stats \n");
mutex_lock(&mdev->state_lock);
if (mdev->device_up) {
if (priv->port_up) {
if (priv->vlgrp_modified)
mlx4_en_handle_vlans(priv);
mlx4_en_auto_moderation(priv);
}
queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
}
if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
panic("mlx4_en_do_get_stats: Unexpected mac removed for %d\n",
priv->port);
mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
}
mutex_unlock(&mdev->state_lock);
}
static void mlx4_en_linkstate(struct work_struct *work)
{
struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
linkstate_task);
struct mlx4_en_dev *mdev = priv->mdev;
int linkstate = priv->link_state;
mutex_lock(&mdev->state_lock);
/* If observable port state changed set carrier state and
* report to system log */
if (priv->last_link_state != linkstate) {
if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
if_link_state_change(priv->dev, LINK_STATE_DOWN);
} else {
en_info(priv, "Link Up\n");
if_link_state_change(priv->dev, LINK_STATE_UP);
}
}
priv->last_link_state = linkstate;
mutex_unlock(&mdev->state_lock);
}
int mlx4_en_start_port(struct net_device *dev)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
struct mlx4_en_cq *cq;
struct mlx4_en_tx_ring *tx_ring;
u64 config;
int rx_index = 0;
int tx_index = 0;
int err = 0;
int i;
int j;
if (priv->port_up) {
en_dbg(DRV, priv, "start port called while port already up\n");
return 0;
}
/* Calculate Rx buf size */
dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
mlx4_en_calc_rx_buf(dev);
en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
/* Configure rx cq's and rings */
err = mlx4_en_activate_rx_rings(priv);
if (err) {
en_err(priv, "Failed to activate RX rings\n");
return err;
}
for (i = 0; i < priv->rx_ring_num; i++) {
cq = &priv->rx_cq[i];
err = mlx4_en_activate_cq(priv, cq);
if (err) {
en_err(priv, "Failed activating Rx CQ\n");
goto cq_err;
}
for (j = 0; j < cq->size; j++)
cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
err = mlx4_en_set_cq_moder(priv, cq);
if (err) {
en_err(priv, "Failed setting cq moderation parameters");
mlx4_en_deactivate_cq(priv, cq);
goto cq_err;
}
mlx4_en_arm_cq(priv, cq);
priv->rx_ring[i].cqn = cq->mcq.cqn;
++rx_index;
}
err = mlx4_en_config_rss_steer(priv);
if (err) {
en_err(priv, "Failed configuring rss steering\n");
goto cq_err;
}
/* Configure tx cq's and rings */
for (i = 0; i < priv->tx_ring_num; i++) {
/* Configure cq */
cq = &priv->tx_cq[i];
err = mlx4_en_activate_cq(priv, cq);
if (err) {
en_err(priv, "Failed allocating Tx CQ\n");
goto tx_err;
}
err = mlx4_en_set_cq_moder(priv, cq);
if (err) {
en_err(priv, "Failed setting cq moderation parameters");
mlx4_en_deactivate_cq(priv, cq);
goto tx_err;
}
en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
cq->buf->wqe_index = cpu_to_be16(0xffff);
/* Configure ring */
tx_ring = &priv->tx_ring[i];
err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn);
if (err) {
en_err(priv, "Failed allocating Tx ring\n");
mlx4_en_deactivate_cq(priv, cq);
goto tx_err;
}
/* Set initial ownership of all Tx TXBBs to SW (1) */
for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
*((u32 *) (tx_ring->buf + j)) = 0xffffffff;
++tx_index;
}
/* Configure port */
err = mlx4_SET_PORT_general(mdev->dev, priv->port,
priv->rx_mb_size + ETHER_CRC_LEN,
priv->prof->tx_pause,
priv->prof->tx_ppp,
priv->prof->rx_pause,
priv->prof->rx_ppp);
if (err) {
en_err(priv, "Failed setting port general configurations "
"for port %d, with error %d\n", priv->port, err);
goto tx_err;
}
/* Set default qp number */
err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
if (err) {
en_err(priv, "Failed setting default qp numbers\n");
goto tx_err;
}
/* Set port mac number */
en_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
err = mlx4_register_mac(mdev->dev, priv->port,
mlx4_en_mac_to_u64(IF_LLADDR(dev)),
&priv->mac_index);
if (err) {
en_err(priv, "Failed setting port mac\n");
goto tx_err;
}
mdev->mac_removed[priv->port] = 0;
/* Init port */
en_dbg(HW, priv, "Initializing port\n");
err = mlx4_INIT_PORT(mdev->dev, priv->port);
if (err) {
en_err(priv, "Failed Initializing port\n");
goto mac_err;
}
/* Set the various hardware offload abilities */
dev->if_hwassist = 0;
if (dev->if_capenable & IFCAP_TSO4)
dev->if_hwassist |= CSUM_TSO;
if (dev->if_capenable & IFCAP_TXCSUM)
dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
if (dev->if_capenable & IFCAP_RXCSUM)
priv->rx_csum = 1;
else
priv->rx_csum = 0;
err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
if (err) {
en_err(priv, "Failed to get WoL info, unable to modify\n");
goto wol_err;
}
if (dev->if_capenable & IFCAP_WOL_MAGIC) {
config |= MLX4_EN_WOL_DO_MODIFY | MLX4_EN_WOL_ENABLED |
MLX4_EN_WOL_MAGIC;
} else {
config &= ~(MLX4_EN_WOL_ENABLED | MLX4_EN_WOL_MAGIC);
config |= MLX4_EN_WOL_DO_MODIFY;
}
err = mlx4_wol_write(priv->mdev->dev, config, priv->port);
if (err) {
en_err(priv, "Failed to set WoL information\n");
goto wol_err;
}
priv->port_up = true;
/* Populate multicast list */
mlx4_en_set_multicast(dev);
/* Enable the queues. */
atomic_clear_int(&dev->if_drv_flags, IFF_DRV_OACTIVE);
atomic_set_int(&dev->if_drv_flags, IFF_DRV_RUNNING);
callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
mlx4_en_watchdog_timeout, priv);
return 0;
wol_err:
/* close port*/
mlx4_CLOSE_PORT(mdev->dev, priv->port);
mac_err:
mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
tx_err:
while (tx_index--) {
mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
}
mlx4_en_release_rss_steer(priv);
cq_err:
while (rx_index--)
mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
for (i = 0; i < priv->rx_ring_num; i++)
mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
return err; /* need to close devices */
}
void mlx4_en_stop_port(struct net_device *dev)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
int i;
if (!priv->port_up) {
en_dbg(DRV, priv, "stop port called while port already down\n");
return;
}
/* Set port as not active */
priv->port_up = false;
/* Unregister Mac address for the port */
mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
mdev->mac_removed[priv->port] = 1;
/* Free TX Rings */
for (i = 0; i < priv->tx_ring_num; i++) {
mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
}
msleep(10);
for (i = 0; i < priv->tx_ring_num; i++)
mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
/* Free RSS qps */
mlx4_en_release_rss_steer(priv);
/* Free RX Rings */
for (i = 0; i < priv->rx_ring_num; i++) {
mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
}
/* close port*/
mlx4_CLOSE_PORT(mdev->dev, priv->port);
callout_stop(&priv->watchdog_timer);
atomic_clear_int(&dev->if_drv_flags, IFF_DRV_RUNNING);
}
static void mlx4_en_restart(struct work_struct *work)
{
struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
watchdog_task);
struct mlx4_en_dev *mdev = priv->mdev;
struct net_device *dev = priv->dev;
struct mlx4_en_tx_ring *ring;
int i;
if (priv->blocked == 0 || priv->port_up == 0)
return;
for (i = 0; i < priv->tx_ring_num; i++) {
ring = &priv->tx_ring[i];
if (ring->blocked &&
ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks)
goto reset;
}
return;
reset:
priv->port_stats.tx_timeout++;
en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
mutex_lock(&mdev->state_lock);
if (priv->port_up) {
mlx4_en_stop_port(dev);
if (mlx4_en_start_port(dev))
en_err(priv, "Failed restarting port %d\n", priv->port);
}
mutex_unlock(&mdev->state_lock);
}
static void
mlx4_en_init(void *arg)
{
struct mlx4_en_priv *priv;
struct mlx4_en_dev *mdev;
struct ifnet *dev;
int i;
priv = arg;
dev = priv->dev;
mdev = priv->mdev;
mutex_lock(&mdev->state_lock);
if (dev->if_drv_flags & IFF_DRV_RUNNING)
mlx4_en_stop_port(dev);
if (!mdev->device_up) {
en_err(priv, "Cannot open - device down/disabled\n");
goto out;
}
/* Reset HW statistics and performance counters */
if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
en_dbg(HW, priv, "Failed dumping statistics\n");
memset(&priv->pstats, 0, sizeof(priv->pstats));
for (i = 0; i < priv->tx_ring_num; i++) {
priv->tx_ring[i].bytes = 0;
priv->tx_ring[i].packets = 0;
}
for (i = 0; i < priv->rx_ring_num; i++) {
priv->rx_ring[i].bytes = 0;
priv->rx_ring[i].packets = 0;
}
mlx4_en_set_default_moderation(priv);
if (mlx4_en_start_port(dev))
en_err(priv, "Failed starting port:%d\n", priv->port);
out:
mutex_unlock(&mdev->state_lock);
}
void mlx4_en_free_resources(struct mlx4_en_priv *priv)
{
int i;
for (i = 0; i < priv->tx_ring_num; i++) {
if (priv->tx_ring[i].tx_info)
mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
if (priv->tx_cq[i].buf)
mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
}
for (i = 0; i < priv->rx_ring_num; i++) {
if (priv->rx_ring[i].rx_info)
mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
if (priv->rx_cq[i].buf)
mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
}
/* Free the stats tree when we resize the rings. */
if (priv->sysctl)
sysctl_ctx_free(&priv->stat_ctx);
}
int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
{
struct mlx4_en_port_profile *prof = priv->prof;
int i;
/* Create tx Rings */
for (i = 0; i < priv->tx_ring_num; i++) {
if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
prof->tx_ring_size, i, TX))
goto err;
if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
prof->tx_ring_size, TXBB_SIZE))
goto err;
}
/* Create rx Rings */
for (i = 0; i < priv->rx_ring_num; i++) {
if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
prof->rx_ring_size, i, RX))
goto err;
if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
prof->rx_ring_size))
goto err;
}
/* Re-create stat sysctls in case the number of rings changed. */
mlx4_en_sysctl_stat(priv);
/* Populate Tx priority mappings */
mlx4_en_set_prio_map(priv, priv->tx_prio_map,
priv->tx_ring_num - MLX4_EN_NUM_HASH_RINGS);
return 0;
err:
en_err(priv, "Failed to allocate NIC resources\n");
return -ENOMEM;
}
void mlx4_en_destroy_netdev(struct net_device *dev)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
if (priv->vlan_attach != NULL)
EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
if (priv->vlan_detach != NULL)
EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
/* Unregister device - this will close the port if it was up */
if (priv->registered)
ether_ifdetach(dev);
if (priv->allocated)
mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
if (priv->sysctl)
sysctl_ctx_free(&priv->conf_ctx);
cancel_delayed_work(&priv->stats_task);
/* flush any pending task for this netdev */
flush_workqueue(mdev->workqueue);
/* Detach the netdev so tasks would not attempt to access it */
mutex_lock(&mdev->state_lock);
mdev->pndev[priv->port] = NULL;
mutex_unlock(&mdev->state_lock);
mlx4_en_free_resources(priv);
mtx_destroy(&priv->stats_lock.m);
mtx_destroy(&priv->vlan_lock.m);
kfree(priv);
if_free(dev);
}
static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
int err = 0;
en_dbg(DRV, priv, "Change MTU called - current:%ld new:%d\n",
dev->if_mtu, new_mtu);
if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
en_err(priv, "Bad MTU size:%d.\n", new_mtu);
return -EPERM;
}
mutex_lock(&mdev->state_lock);
dev->if_mtu = new_mtu;
if (dev->if_drv_flags & IFF_DRV_RUNNING) {
if (!mdev->device_up) {
/* NIC is probably restarting - let watchdog task reset
* the port */
en_dbg(DRV, priv, "Change MTU called with card down!?\n");
} else {
mlx4_en_stop_port(dev);
mlx4_en_set_default_moderation(priv);
err = mlx4_en_start_port(dev);
if (err) {
en_err(priv, "Failed restarting port:%d\n",
priv->port);
queue_work(mdev->workqueue, &priv->watchdog_task);
}
}
}
mutex_unlock(&mdev->state_lock);
return 0;
}
static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
{
int trans_type;
int active;
active = IFM_ETHER;
if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
return (active);
if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
return (active);
active |= IFM_FDX;
trans_type = priv->port_state.transciver;
/* XXX I don't know all of the transceiver values. */
switch (priv->port_state.link_speed) {
case 1000:
active |= IFM_1000_T;
break;
case 10000:
if (trans_type > 0 && trans_type <= 0xC)
active |= IFM_10G_SR;
else if (trans_type == 0x80 || trans_type == 0)
active |= IFM_10G_CX4;
break;
case 40000:
active |= IFM_40G_CR4;
break;
}
if (priv->prof->tx_pause)
active |= IFM_ETH_TXPAUSE;
if (priv->prof->rx_pause)
active |= IFM_ETH_RXPAUSE;
return (active);
}
static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
{
struct mlx4_en_priv *priv;
priv = dev->if_softc;
ifmr->ifm_status = IFM_AVALID;
if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
ifmr->ifm_status |= IFM_ACTIVE;
ifmr->ifm_active = mlx4_en_calc_media(priv);
return;
}
static int mlx4_en_media_change(struct ifnet *dev)
{
struct mlx4_en_priv *priv;
struct ifmedia *ifm;
int rxpause;
int txpause;
int error;
priv = dev->if_softc;
ifm = &priv->media;
rxpause = txpause = 0;
error = 0;
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return (EINVAL);
switch (IFM_SUBTYPE(ifm->ifm_media)) {
case IFM_AUTO:
break;
case IFM_10G_SR:
case IFM_10G_CX4:
case IFM_1000_T:
if (IFM_SUBTYPE(ifm->ifm_media) ==
IFM_SUBTYPE(mlx4_en_calc_media(priv)) &&
(ifm->ifm_media & IFM_FDX))
break;
/* Fallthrough */
default:
printf("%s: Only auto media type\n", if_name(dev));
return (EINVAL);
}
/* Allow user to set/clear pause */
if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
rxpause = 1;
if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
txpause = 1;
if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
priv->prof->tx_pause = txpause;
priv->prof->rx_pause = rxpause;
error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
priv->prof->tx_ppp, priv->prof->rx_pause,
priv->prof->rx_ppp);
}
return (error);
}
static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
{
struct mlx4_en_priv *priv;
struct mlx4_en_dev *mdev;
struct ifreq *ifr;
int error;
int mask;
error = 0;
mask = 0;
priv = dev->if_softc;
mdev = priv->mdev;
ifr = (struct ifreq *) data;
switch (command) {
case SIOCSIFMTU:
error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
break;
case SIOCSIFFLAGS:
if (dev->if_flags & IFF_UP) {
if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0) {
mutex_lock(&mdev->state_lock);
mlx4_en_start_port(dev);
mutex_unlock(&mdev->state_lock);
} else
mlx4_en_set_multicast(dev);
} else {
mutex_lock(&mdev->state_lock);
if (dev->if_drv_flags & IFF_DRV_RUNNING) {
mlx4_en_stop_port(dev);
if_link_state_change(dev, LINK_STATE_DOWN);
}
mutex_unlock(&mdev->state_lock);
}
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
mlx4_en_set_multicast(dev);
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
error = ifmedia_ioctl(dev, ifr, &priv->media, command);
break;
case SIOCSIFCAP:
mask = ifr->ifr_reqcap ^ dev->if_capenable;
if (mask & IFCAP_HWCSUM)
dev->if_capenable ^= IFCAP_HWCSUM;
if (mask & IFCAP_TSO4)
dev->if_capenable ^= IFCAP_TSO4;
if (mask & IFCAP_LRO)
dev->if_capenable ^= IFCAP_LRO;
if (mask & IFCAP_VLAN_HWTAGGING)
dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
if (mask & IFCAP_VLAN_HWFILTER)
dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
if (mask & IFCAP_WOL_MAGIC)
dev->if_capenable ^= IFCAP_WOL_MAGIC;
if (dev->if_drv_flags & IFF_DRV_RUNNING)
mlx4_en_init(priv);
VLAN_CAPABILITIES(dev);
break;
default:
error = ether_ioctl(dev, command, data);
break;
}
return (error);
}
static int mlx4_en_set_ring_size(struct net_device *dev,
int rx_size, int tx_size)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
int port_up = 0;
int err = 0;
rx_size = roundup_pow_of_two(rx_size);
rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
tx_size = roundup_pow_of_two(tx_size);
tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
if (rx_size == (priv->port_up ?
priv->rx_ring[0].actual_size : priv->rx_ring[0].size) &&
tx_size == priv->tx_ring[0].size)
return 0;
mutex_lock(&mdev->state_lock);
if (priv->port_up) {
port_up = 1;
mlx4_en_stop_port(dev);
}
mlx4_en_free_resources(priv);
priv->prof->tx_ring_size = tx_size;
priv->prof->rx_ring_size = rx_size;
err = mlx4_en_alloc_resources(priv);
if (err) {
en_err(priv, "Failed reallocating port resources\n");
goto out;
}
if (port_up) {
err = mlx4_en_start_port(dev);
if (err)
en_err(priv, "Failed starting port\n");
}
out:
mutex_unlock(&mdev->state_lock);
return err;
}
static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
{
struct mlx4_en_priv *priv;
int size;
int error;
priv = arg1;
size = priv->prof->rx_ring_size;
error = sysctl_handle_int(oidp, &size, 0, req);
if (error || !req->newptr)
return (error);
error = -mlx4_en_set_ring_size(priv->dev, size,
priv->prof->tx_ring_size);
return (error);
}
static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
{
struct mlx4_en_priv *priv;
int size;
int error;
priv = arg1;
size = priv->prof->tx_ring_size;
error = sysctl_handle_int(oidp, &size, 0, req);
if (error || !req->newptr)
return (error);
error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
size);
return (error);
}
static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
{
struct mlx4_en_priv *priv;
int ppp;
int error;
priv = arg1;
ppp = priv->prof->tx_ppp;
error = sysctl_handle_int(oidp, &ppp, 0, req);
if (error || !req->newptr)
return (error);
if (ppp > 0xff || ppp < 0)
return (-EINVAL);
priv->prof->tx_ppp = ppp;
error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
priv->rx_mb_size + ETHER_CRC_LEN,
priv->prof->tx_pause,
priv->prof->tx_ppp,
priv->prof->rx_pause,
priv->prof->rx_ppp);
return (error);
}
static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
{
struct mlx4_en_priv *priv;
struct mlx4_en_dev *mdev;
int tx_ring_num;
int ppp;
int error;
int port_up;
port_up = 0;
priv = arg1;
mdev = priv->mdev;
ppp = priv->prof->rx_ppp;
error = sysctl_handle_int(oidp, &ppp, 0, req);
if (error || !req->newptr)
return (error);
if (ppp > 0xff || ppp < 0)
return (-EINVAL);
/* See if we have to change the number of tx queues. */
if (!ppp != !priv->prof->rx_ppp) {
tx_ring_num = MLX4_EN_NUM_HASH_RINGS + 1 +
(!!ppp) * MLX4_EN_NUM_PPP_RINGS;
mutex_lock(&mdev->state_lock);
if (priv->port_up) {
port_up = 1;
mlx4_en_stop_port(priv->dev);
}
mlx4_en_free_resources(priv);
priv->tx_ring_num = tx_ring_num;
priv->prof->rx_ppp = ppp;
error = -mlx4_en_alloc_resources(priv);
if (error)
en_err(priv, "Failed reallocating port resources\n");
if (error == 0 && port_up) {
error = -mlx4_en_start_port(priv->dev);
if (error)
en_err(priv, "Failed starting port\n");
}
mutex_unlock(&mdev->state_lock);
return (error);
}
priv->prof->rx_ppp = ppp;
error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
priv->rx_mb_size + ETHER_CRC_LEN,
priv->prof->tx_pause,
priv->prof->tx_ppp,
priv->prof->rx_pause,
priv->prof->rx_ppp);
return (error);
}
static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
{
struct net_device *dev;
struct sysctl_ctx_list *ctx;
struct sysctl_oid *node;
struct sysctl_oid_list *node_list;
struct sysctl_oid *coal;
struct sysctl_oid_list *coal_list;
dev = priv->dev;
ctx = &priv->conf_ctx;
sysctl_ctx_init(ctx);
priv->sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
"conf", CTLFLAG_RD, NULL, "Configuration");
node_list = SYSCTL_CHILDREN(node);
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
CTLFLAG_RW, &priv->msg_enable, 0,
"Driver message enable bitfield");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
CTLTYPE_INT | CTLFLAG_RD, &priv->rx_ring_num, 0,
"Number of receive rings");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
CTLTYPE_INT | CTLFLAG_RD, &priv->tx_ring_num, 0,
"Number of transmit rings");
SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
mlx4_en_set_rx_ring_size, "I", "Receive ring size");
SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "ip_reasm",
CTLFLAG_RW, &priv->ip_reasm, 0,
"Allow reassembly of IP fragments.");
SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
/* Add coalescer configuration. */
coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
"coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
coal_list = SYSCTL_CHILDREN(node);
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
CTLFLAG_RW, &priv->pkt_rate_low, 0,
"Packets per-second for minimum delay");
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
CTLFLAG_RW, &priv->rx_usecs_low, 0,
"Minimum RX delay in micro-seconds");
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
CTLFLAG_RW, &priv->pkt_rate_high, 0,
"Packets per-second for maximum delay");
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
CTLFLAG_RW, &priv->rx_usecs_high, 0,
"Maximum RX delay in micro-seconds");
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
CTLFLAG_RW, &priv->sample_interval, 0,
"adaptive frequency in units of HZ ticks");
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
"Enable adaptive rx coalescing");
}
static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
{
struct net_device *dev;
struct sysctl_ctx_list *ctx;
struct sysctl_oid *node;
struct sysctl_oid_list *node_list;
struct sysctl_oid *ring_node;
struct sysctl_oid_list *ring_list;
struct mlx4_en_tx_ring *tx_ring;
struct mlx4_en_rx_ring *rx_ring;
char namebuf[128];
int i;
dev = priv->dev;
ctx = &priv->stat_ctx;
sysctl_ctx_init(ctx);
node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
"stat", CTLFLAG_RD, NULL, "Statistics");
node_list = SYSCTL_CHILDREN(node);
#ifdef MLX4_EN_PERF_STAT
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
&priv->pstats.tx_poll, "TX Poll calls");
SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
&priv->pstats.tx_pktsz_avg, "TX average packet size");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
&priv->pstats.inflight_avg, "TX average packets in-flight");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
&priv->pstats.tx_coal_avg, "TX average coalesced completions");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
&priv->pstats.rx_coal_avg, "RX average coalesced completions");
#endif
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
&priv->port_stats.tso_packets, "TSO packets sent");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
&priv->port_stats.queue_stopped, "Queue full");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
&priv->port_stats.wake_queue, "Queue resumed after full");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
&priv->port_stats.tx_timeout, "Transmit timeouts");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
&priv->port_stats.rx_alloc_failed, "RX failed to allocate mbuf");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
&priv->port_stats.rx_chksum_good, "RX checksum offload success");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
&priv->port_stats.rx_chksum_none, "RX without checksum offload");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_chksum_offload",
CTLFLAG_RD, &priv->port_stats.tx_chksum_offload,
"TX checksum offloads");
/* Could strdup the names and add in a loop. This is simpler. */
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "broadcast", CTLFLAG_RD,
&priv->pkstats.broadcast, "Broadcast packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio0", CTLFLAG_RD,
&priv->pkstats.tx_prio[0], "TX Priority 0 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio1", CTLFLAG_RD,
&priv->pkstats.tx_prio[1], "TX Priority 1 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio2", CTLFLAG_RD,
&priv->pkstats.tx_prio[2], "TX Priority 2 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio3", CTLFLAG_RD,
&priv->pkstats.tx_prio[3], "TX Priority 3 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio4", CTLFLAG_RD,
&priv->pkstats.tx_prio[4], "TX Priority 4 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio5", CTLFLAG_RD,
&priv->pkstats.tx_prio[5], "TX Priority 5 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio6", CTLFLAG_RD,
&priv->pkstats.tx_prio[6], "TX Priority 6 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio7", CTLFLAG_RD,
&priv->pkstats.tx_prio[7], "TX Priority 7 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio0", CTLFLAG_RD,
&priv->pkstats.rx_prio[0], "RX Priority 0 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio1", CTLFLAG_RD,
&priv->pkstats.rx_prio[1], "RX Priority 1 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio2", CTLFLAG_RD,
&priv->pkstats.rx_prio[2], "RX Priority 2 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio3", CTLFLAG_RD,
&priv->pkstats.rx_prio[3], "RX Priority 3 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio4", CTLFLAG_RD,
&priv->pkstats.rx_prio[4], "RX Priority 4 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio5", CTLFLAG_RD,
&priv->pkstats.rx_prio[5], "RX Priority 5 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio6", CTLFLAG_RD,
&priv->pkstats.rx_prio[6], "RX Priority 6 packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio7", CTLFLAG_RD,
&priv->pkstats.rx_prio[7], "RX Priority 7 packets");
for (i = 0; i < priv->tx_ring_num; i++) {
tx_ring = &priv->tx_ring[i];
snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
CTLFLAG_RD, NULL, "TX Ring");
ring_list = SYSCTL_CHILDREN(ring_node);
SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
CTLFLAG_RD, &tx_ring->packets, "TX packets");
SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
CTLFLAG_RD, &tx_ring->bytes, "TX bytes");
SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
CTLFLAG_RD, &tx_ring->errors, "TX soft errors");
}
for (i = 0; i < priv->rx_ring_num; i++) {
rx_ring = &priv->rx_ring[i];
snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
CTLFLAG_RD, NULL, "RX Ring");
ring_list = SYSCTL_CHILDREN(ring_node);
SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
CTLFLAG_RD, &rx_ring->packets, "RX packets");
SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
CTLFLAG_RD, &rx_ring->bytes, "RX bytes");
SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
CTLFLAG_RD, &rx_ring->errors, "RX soft errors");
SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_queued",
CTLFLAG_RD, &rx_ring->lro.lro_queued, 0, "LRO Queued");
SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_flushed",
CTLFLAG_RD, &rx_ring->lro.lro_flushed, 0, "LRO Flushed");
}
}
int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
struct mlx4_en_port_profile *prof)
{
static volatile int mlx4_en_unit;
struct net_device *dev;
struct mlx4_en_priv *priv;
uint8_t dev_addr[ETHER_ADDR_LEN];
int err;
int i;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
dev = priv->dev = if_alloc(IFT_ETHER);
if (dev == NULL) {
mlx4_err(mdev, "Net device allocation failed\n");
kfree(priv);
return -ENOMEM;
}
dev->if_softc = priv;
if_initname(dev, "mlxen", atomic_fetchadd_int(&mlx4_en_unit, 1));
dev->if_mtu = ETHERMTU;
dev->if_baudrate = 1000000000;
dev->if_init = mlx4_en_init;
dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
dev->if_ioctl = mlx4_en_ioctl;
dev->if_transmit = mlx4_en_transmit;
dev->if_qflush = mlx4_en_qflush;
dev->if_snd.ifq_maxlen = prof->tx_ring_size;
/*
* Initialize driver private data
*/
priv->dev = dev;
priv->mdev = mdev;
priv->prof = prof;
priv->port = port;
priv->port_up = false;
priv->rx_csum = 1;
priv->flags = prof->flags;
priv->tx_ring_num = prof->tx_ring_num;
priv->rx_ring_num = prof->rx_ring_num;
priv->mac_index = -1;
priv->msg_enable = MLX4_EN_MSG_LEVEL;
priv->ip_reasm = priv->mdev->profile.ip_reasm;
mtx_init(&priv->stats_lock.m, "mlx4 stats", NULL, MTX_DEF);
mtx_init(&priv->vlan_lock.m, "mlx4 vlan", NULL, MTX_DEF);
INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
callout_init(&priv->watchdog_timer, 1);
/* Query for default mac and max mtu */
priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
priv->mac = mdev->dev->caps.def_mac[priv->port];
if (ILLEGAL_MAC(priv->mac)) {
en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
priv->port, priv->mac);
err = -EINVAL;
goto out;
}
mlx4_en_sysctl_conf(priv);
err = mlx4_en_alloc_resources(priv);
if (err)
goto out;
/* Allocate page for receive rings */
err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
if (err) {
en_err(priv, "Failed to allocate page for rx qps\n");
goto out;
}
priv->allocated = 1;
/*
* Set driver features
*/
dev->if_capabilities |= IFCAP_RXCSUM | IFCAP_TXCSUM;
dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
if (mdev->LSO_support)
dev->if_capabilities |= IFCAP_TSO4 | IFCAP_VLAN_HWTSO;
if (mdev->profile.num_lro)
dev->if_capabilities |= IFCAP_LRO;
dev->if_capenable = dev->if_capabilities;
/*
* Setup wake-on-lan.
*/
if (priv->mdev->dev->caps.wol) {
u64 config;
if (mlx4_wol_read(priv->mdev->dev, &config, priv->port) == 0) {
if (config & MLX4_EN_WOL_MAGIC)
dev->if_capabilities |= IFCAP_WOL_MAGIC;
if (config & MLX4_EN_WOL_ENABLED)
dev->if_capenable |= IFCAP_WOL_MAGIC;
}
}
/* Register for VLAN events */
priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
mdev->pndev[priv->port] = dev;
priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
if_link_state_change(dev, LINK_STATE_DOWN);
/* Set default MAC */
for (i = 0; i < ETHER_ADDR_LEN; i++)
dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
ether_ifattach(dev, dev_addr);
ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
mlx4_en_media_change, mlx4_en_media_status);
ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
priv->registered = 1;
queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
return 0;
out:
mlx4_en_destroy_netdev(dev);
return err;
}