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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-05-13 01:32:22 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-11 02:41:35 -0700
commit5a2cc190eb3fe58fe519795c509b01b25795992e (patch)
tree9a319736bd77979ab5dbdc26d29424d84eb235b0 /drivers/net/mlx4/en_netdev.c
parentf844a0ead401c3ce0f01a8bb4d6cea2f0f6ad863 (diff)
mlx4: Move the Mellanox driver
Moves the Mellanox driver into drivers/net/ethernet/mellanox/ and make the necessary Kconfig and Makefile changes. CC: Roland Dreier <roland@kernel.org> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/mlx4/en_netdev.c')
-rw-r--r--drivers/net/mlx4/en_netdev.c1166
1 files changed, 0 insertions, 1166 deletions
diff --git a/drivers/net/mlx4/en_netdev.c b/drivers/net/mlx4/en_netdev.c
deleted file mode 100644
index 4b0f32e568f8..000000000000
--- a/drivers/net/mlx4/en_netdev.c
+++ /dev/null
@@ -1,1166 +0,0 @@
-/*
- * 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 <linux/etherdevice.h>
-#include <linux/tcp.h>
-#include <linux/if_vlan.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-
-#include <linux/mlx4/driver.h>
-#include <linux/mlx4/device.h>
-#include <linux/mlx4/cmd.h>
-#include <linux/mlx4/cq.h>
-
-#include "mlx4_en.h"
-#include "en_port.h"
-
-static void mlx4_en_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
-{
- struct mlx4_en_priv *priv = netdev_priv(dev);
- struct mlx4_en_dev *mdev = priv->mdev;
- int err;
- int idx;
-
- en_dbg(HW, priv, "adding VLAN:%d\n", vid);
-
- set_bit(vid, priv->active_vlans);
-
- /* Add VID to port VLAN filter */
- mutex_lock(&mdev->state_lock);
- if (mdev->device_up && priv->port_up) {
- err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
- if (err)
- en_err(priv, "Failed configuring VLAN filter\n");
- }
- if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
- en_err(priv, "failed adding vlan %d\n", vid);
- mutex_unlock(&mdev->state_lock);
-
-}
-
-static void mlx4_en_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
-{
- struct mlx4_en_priv *priv = netdev_priv(dev);
- struct mlx4_en_dev *mdev = priv->mdev;
- int err;
- int idx;
-
- en_dbg(HW, priv, "Killing VID:%d\n", vid);
-
- clear_bit(vid, priv->active_vlans);
-
- /* Remove VID from port VLAN filter */
- mutex_lock(&mdev->state_lock);
- if (!mlx4_find_cached_vlan(mdev->dev, priv->port, vid, &idx))
- mlx4_unregister_vlan(mdev->dev, priv->port, idx);
- else
- en_err(priv, "could not find vid %d in cache\n", vid);
-
- if (mdev->device_up && priv->port_up) {
- err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
- if (err)
- en_err(priv, "Failed configuring VLAN filter\n");
- }
- mutex_unlock(&mdev->state_lock);
-}
-
-u64 mlx4_en_mac_to_u64(u8 *addr)
-{
- u64 mac = 0;
- int i;
-
- for (i = 0; i < ETH_ALEN; i++) {
- mac <<= 8;
- mac |= addr[i];
- }
- return mac;
-}
-
-static int mlx4_en_set_mac(struct net_device *dev, void *addr)
-{
- struct mlx4_en_priv *priv = netdev_priv(dev);
- struct mlx4_en_dev *mdev = priv->mdev;
- struct sockaddr *saddr = addr;
-
- if (!is_valid_ether_addr(saddr->sa_data))
- return -EADDRNOTAVAIL;
-
- memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
- priv->mac = mlx4_en_mac_to_u64(dev->dev_addr);
- queue_work(mdev->workqueue, &priv->mac_task);
- return 0;
-}
-
-static void mlx4_en_do_set_mac(struct work_struct *work)
-{
- struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
- mac_task);
- struct mlx4_en_dev *mdev = priv->mdev;
- int err = 0;
-
- mutex_lock(&mdev->state_lock);
- if (priv->port_up) {
- /* Remove old MAC and insert the new one */
- err = mlx4_replace_mac(mdev->dev, priv->port,
- priv->base_qpn, priv->mac, 0);
- if (err)
- en_err(priv, "Failed changing HW MAC address\n");
- } else
- en_dbg(HW, priv, "Port is down while "
- "registering mac, exiting...\n");
-
- mutex_unlock(&mdev->state_lock);
-}
-
-static void mlx4_en_clear_list(struct net_device *dev)
-{
- struct mlx4_en_priv *priv = netdev_priv(dev);
-
- kfree(priv->mc_addrs);
- priv->mc_addrs_cnt = 0;
-}
-
-static void mlx4_en_cache_mclist(struct net_device *dev)
-{
- struct mlx4_en_priv *priv = netdev_priv(dev);
- struct netdev_hw_addr *ha;
- char *mc_addrs;
- int mc_addrs_cnt = netdev_mc_count(dev);
- int i;
-
- mc_addrs = kmalloc(mc_addrs_cnt * ETH_ALEN, GFP_ATOMIC);
- if (!mc_addrs) {
- en_err(priv, "failed to allocate multicast list\n");
- return;
- }
- i = 0;
- netdev_for_each_mc_addr(ha, dev)
- memcpy(mc_addrs + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
- priv->mc_addrs = mc_addrs;
- priv->mc_addrs_cnt = mc_addrs_cnt;
-}
-
-
-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 mlx4_en_dev *mdev = priv->mdev;
- struct net_device *dev = priv->dev;
- u64 mcast_addr = 0;
- u8 mc_list[16] = {0};
- 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->flags & IFF_PROMISC) {
- if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
- if (netif_msg_rx_status(priv))
- en_warn(priv, "Entering promiscuous mode\n");
- priv->flags |= MLX4_EN_FLAG_PROMISC;
-
- /* Enable promiscouos mode */
- if (!(mdev->dev->caps.flags &
- MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
- err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
- priv->base_qpn, 1);
- else
- err = mlx4_unicast_promisc_add(mdev->dev, priv->base_qpn,
- priv->port);
- if (err)
- en_err(priv, "Failed enabling "
- "promiscuous 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");
-
- /* Add the default qp number as multicast promisc */
- if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
- err = mlx4_multicast_promisc_add(mdev->dev, priv->base_qpn,
- priv->port);
- if (err)
- en_err(priv, "Failed entering multicast promisc mode\n");
- priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
- }
-
- /* Disable port VLAN filter */
- err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
- if (err)
- en_err(priv, "Failed disabling VLAN filter\n");
- }
- goto out;
- }
-
- /*
- * Not in promiscuous mode
- */
-
- if (priv->flags & MLX4_EN_FLAG_PROMISC) {
- if (netif_msg_rx_status(priv))
- en_warn(priv, "Leaving promiscuous mode\n");
- priv->flags &= ~MLX4_EN_FLAG_PROMISC;
-
- /* Disable promiscouos mode */
- if (!(mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
- err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
- priv->base_qpn, 0);
- else
- err = mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
- priv->port);
- if (err)
- en_err(priv, "Failed disabling promiscuous mode\n");
-
- /* Disable Multicast promisc */
- if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
- err = mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
- priv->port);
- if (err)
- en_err(priv, "Failed disabling multicast promiscuous mode\n");
- priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
- }
-
- /* Enable port VLAN filter */
- err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
- if (err)
- en_err(priv, "Failed enabling VLAN filter\n");
- }
-
- /* Enable/disable the multicast filter according to IFF_ALLMULTI */
- if (dev->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");
-
- /* Add the default qp number as multicast promisc */
- if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
- err = mlx4_multicast_promisc_add(mdev->dev, priv->base_qpn,
- priv->port);
- if (err)
- en_err(priv, "Failed entering multicast promisc mode\n");
- priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
- }
- } else {
- int i;
- /* Disable Multicast promisc */
- if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
- err = mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
- priv->port);
- if (err)
- en_err(priv, "Failed disabling multicast promiscuous mode\n");
- priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
- }
-
- err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
- 0, MLX4_MCAST_DISABLE);
- if (err)
- en_err(priv, "Failed disabling multicast filter\n");
-
- /* Detach our qp from all the multicast addresses */
- for (i = 0; i < priv->mc_addrs_cnt; i++) {
- memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
- mc_list[5] = priv->port;
- mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
- mc_list, MLX4_PROT_ETH);
- }
- /* 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 */
- netif_tx_lock_bh(dev);
- mlx4_en_cache_mclist(dev);
- netif_tx_unlock_bh(dev);
- for (i = 0; i < priv->mc_addrs_cnt; i++) {
- mcast_addr =
- mlx4_en_mac_to_u64(priv->mc_addrs + i * ETH_ALEN);
- memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
- mc_list[5] = priv->port;
- mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp,
- mc_list, 0, MLX4_PROT_ETH);
- mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
- mcast_addr, 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");
- }
-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_tx_timeout(struct net_device *dev)
-{
- struct mlx4_en_priv *priv = netdev_priv(dev);
- struct mlx4_en_dev *mdev = priv->mdev;
-
- if (netif_msg_timer(priv))
- en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
-
- priv->port_stats.tx_timeout++;
- en_dbg(DRV, priv, "Scheduling watchdog\n");
- queue_work(mdev->workqueue, &priv->watchdog_task);
-}
-
-
-static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
-{
- struct mlx4_en_priv *priv = netdev_priv(dev);
-
- spin_lock_bh(&priv->stats_lock);
- memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
- spin_unlock_bh(&priv->stats_lock);
-
- return &priv->ret_stats;
-}
-
-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 parameters 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->rx_usecs = MLX4_EN_RX_COAL_TIME;
- en_dbg(INTR, priv, "Default coalesing params for mtu:%d - "
- "rx_frames:%d rx_usecs:%d\n",
- priv->dev->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_bh(&priv->stats_lock);
- rx_packets = priv->stats.rx_packets;
- rx_bytes = priv->stats.rx_bytes;
- tx_packets = priv->stats.tx_packets;
- spin_unlock_bh(&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 && avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
- /* 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)
- 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 {
- moder_time = priv->rx_usecs_low;
- }
-
- 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_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)
- 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]) {
- queue_work(mdev->workqueue, &priv->mac_task);
- 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) {
- en_info(priv, "Link Down\n");
- netif_carrier_off(priv->dev);
- } else {
- en_info(priv, "Link Up\n");
- netif_carrier_on(priv->dev);
- }
- }
- 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;
- int rx_index = 0;
- int tx_index = 0;
- int err = 0;
- int i;
- int j;
- u8 mc_list[16] = {0};
- char name[32];
-
- if (priv->port_up) {
- en_dbg(DRV, priv, "start port called while port already up\n");
- return 0;
- }
-
- /* Calculate Rx buf size */
- dev->mtu = min(dev->mtu, priv->max_mtu);
- mlx4_en_calc_rx_buf(dev);
- en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_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;
- }
-
- /* Set port mac number */
- en_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
- err = mlx4_register_mac(mdev->dev, priv->port,
- priv->mac, &priv->base_qpn, 0);
- if (err) {
- en_err(priv, "Failed setting port mac\n");
- goto cq_err;
- }
- mdev->mac_removed[priv->port] = 0;
-
- err = mlx4_en_config_rss_steer(priv);
- if (err) {
- en_err(priv, "Failed configuring rss steering\n");
- goto mac_err;
- }
-
- if (mdev->dev->caps.comp_pool && !priv->tx_vector) {
- sprintf(name , "%s-tx", priv->dev->name);
- if (mlx4_assign_eq(mdev->dev , name, &priv->tx_vector)) {
- mlx4_warn(mdev, "Failed Assigning an EQ to "
- "%s_tx ,Falling back to legacy "
- "EQ's\n", priv->dev->name);
- }
- }
- /* Configure tx cq's and rings */
- for (i = 0; i < priv->tx_ring_num; i++) {
- /* Configure cq */
- cq = &priv->tx_cq[i];
- cq->vector = priv->tx_vector;
- 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_skb_size + ETH_FCS_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;
- }
-
- /* 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 tx_err;
- }
-
- /* Attach rx QP to bradcast address */
- memset(&mc_list[10], 0xff, ETH_ALEN);
- mc_list[5] = priv->port;
- if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
- 0, MLX4_PROT_ETH))
- mlx4_warn(mdev, "Failed Attaching Broadcast\n");
-
- /* Must redo promiscuous mode setup. */
- priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
-
- /* Schedule multicast task to populate multicast list */
- queue_work(mdev->workqueue, &priv->mcast_task);
-
- priv->port_up = true;
- netif_tx_start_all_queues(dev);
- return 0;
-
-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);
-mac_err:
- mlx4_unregister_mac(mdev->dev, priv->port, priv->base_qpn);
-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;
- u8 mc_list[16] = {0};
-
- if (!priv->port_up) {
- en_dbg(DRV, priv, "stop port called while port already down\n");
- return;
- }
-
- /* Synchronize with tx routine */
- netif_tx_lock_bh(dev);
- netif_tx_stop_all_queues(dev);
- netif_tx_unlock_bh(dev);
-
- /* Set port as not active */
- priv->port_up = false;
-
- /* Detach All multicasts */
- memset(&mc_list[10], 0xff, ETH_ALEN);
- mc_list[5] = priv->port;
- mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
- MLX4_PROT_ETH);
- for (i = 0; i < priv->mc_addrs_cnt; i++) {
- memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
- mc_list[5] = priv->port;
- mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
- mc_list, MLX4_PROT_ETH);
- }
- mlx4_en_clear_list(dev);
- /* Flush multicast filter */
- mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
-
- /* Unregister Mac address for the port */
- mlx4_unregister_mac(mdev->dev, priv->port, priv->base_qpn);
- 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]);
- while (test_bit(NAPI_STATE_SCHED, &priv->rx_cq[i].napi.state))
- msleep(1);
- mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
- }
-
- /* close port*/
- mlx4_CLOSE_PORT(mdev->dev, priv->port);
-}
-
-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;
-
- 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 int mlx4_en_open(struct net_device *dev)
-{
- struct mlx4_en_priv *priv = netdev_priv(dev);
- struct mlx4_en_dev *mdev = priv->mdev;
- int i;
- int err = 0;
-
- mutex_lock(&mdev->state_lock);
-
- if (!mdev->device_up) {
- en_err(priv, "Cannot open - device down/disabled\n");
- err = -EBUSY;
- 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->stats, 0, sizeof(priv->stats));
- 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;
- }
-
- err = mlx4_en_start_port(dev);
- if (err)
- en_err(priv, "Failed starting port:%d\n", priv->port);
-
-out:
- mutex_unlock(&mdev->state_lock);
- return err;
-}
-
-
-static int mlx4_en_close(struct net_device *dev)
-{
- struct mlx4_en_priv *priv = netdev_priv(dev);
- struct mlx4_en_dev *mdev = priv->mdev;
-
- en_dbg(IFDOWN, priv, "Close port called\n");
-
- mutex_lock(&mdev->state_lock);
-
- mlx4_en_stop_port(dev);
- netif_carrier_off(dev);
-
- mutex_unlock(&mdev->state_lock);
- return 0;
-}
-
-void mlx4_en_free_resources(struct mlx4_en_priv *priv, bool reserve_vectors)
-{
- 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], reserve_vectors);
- }
-
- 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], reserve_vectors);
- }
-}
-
-int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
-{
- struct mlx4_en_port_profile *prof = priv->prof;
- int i;
- int base_tx_qpn, err;
-
- err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &base_tx_qpn);
- if (err) {
- en_err(priv, "failed reserving range for TX rings\n");
- return err;
- }
-
- /* 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], base_tx_qpn + 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, priv->stride))
- goto err;
- }
-
- return 0;
-
-err:
- en_err(priv, "Failed to allocate NIC resources\n");
- mlx4_qp_release_range(priv->mdev->dev, base_tx_qpn, priv->tx_ring_num);
- 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);
-
- /* Unregister device - this will close the port if it was up */
- if (priv->registered)
- unregister_netdev(dev);
-
- if (priv->allocated)
- mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
-
- 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, false);
- free_netdev(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:%d new:%d\n",
- dev->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;
- }
- dev->mtu = new_mtu;
-
- if (netif_running(dev)) {
- mutex_lock(&mdev->state_lock);
- 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);
- 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 const struct net_device_ops mlx4_netdev_ops = {
- .ndo_open = mlx4_en_open,
- .ndo_stop = mlx4_en_close,
- .ndo_start_xmit = mlx4_en_xmit,
- .ndo_select_queue = mlx4_en_select_queue,
- .ndo_get_stats = mlx4_en_get_stats,
- .ndo_set_multicast_list = mlx4_en_set_multicast,
- .ndo_set_mac_address = mlx4_en_set_mac,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = mlx4_en_change_mtu,
- .ndo_tx_timeout = mlx4_en_tx_timeout,
- .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
- .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = mlx4_en_netpoll,
-#endif
-};
-
-int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
- struct mlx4_en_port_profile *prof)
-{
- struct net_device *dev;
- struct mlx4_en_priv *priv;
- int i;
- int err;
-
- dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
- prof->tx_ring_num, prof->rx_ring_num);
- if (dev == NULL) {
- mlx4_err(mdev, "Net device allocation failed\n");
- return -ENOMEM;
- }
-
- SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
- dev->dev_id = port - 1;
-
- /*
- * Initialize driver private data
- */
-
- priv = netdev_priv(dev);
- memset(priv, 0, sizeof(struct mlx4_en_priv));
- priv->dev = dev;
- priv->mdev = mdev;
- priv->prof = prof;
- priv->port = port;
- priv->port_up = false;
- 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;
- spin_lock_init(&priv->stats_lock);
- INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
- INIT_WORK(&priv->mac_task, mlx4_en_do_set_mac);
- 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);
-
- /* 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;
- }
-
- priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
- DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
- 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;
-
- /*
- * Initialize netdev entry points
- */
- dev->netdev_ops = &mlx4_netdev_ops;
- dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
- netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
- netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
-
- SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
-
- /* Set defualt MAC */
- dev->addr_len = ETH_ALEN;
- for (i = 0; i < ETH_ALEN; i++) {
- dev->dev_addr[ETH_ALEN - 1 - i] = (u8) (priv->mac >> (8 * i));
- dev->perm_addr[ETH_ALEN - 1 - i] = (u8) (priv->mac >> (8 * i));
- }
-
- /*
- * Set driver features
- */
- dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
- if (mdev->LSO_support)
- dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
-
- dev->vlan_features = dev->hw_features;
-
- dev->hw_features |= NETIF_F_RXCSUM;
- dev->features = dev->hw_features | NETIF_F_HIGHDMA |
- NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
- NETIF_F_HW_VLAN_FILTER;
-
- mdev->pndev[port] = dev;
-
- netif_carrier_off(dev);
- err = register_netdev(dev);
- if (err) {
- en_err(priv, "Netdev registration failed for port %d\n", port);
- goto out;
- }
-
- en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
- en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
-
- /* Configure port */
- err = mlx4_SET_PORT_general(mdev->dev, priv->port,
- MLX4_EN_MIN_MTU,
- 0, 0, 0, 0);
- if (err) {
- en_err(priv, "Failed setting port general configurations "
- "for port %d, with error %d\n", priv->port, err);
- goto out;
- }
-
- /* Init port */
- en_warn(priv, "Initializing port\n");
- err = mlx4_INIT_PORT(mdev->dev, priv->port);
- if (err) {
- en_err(priv, "Failed Initializing port\n");
- goto out;
- }
- priv->registered = 1;
- mlx4_en_set_default_moderation(priv);
- queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
- return 0;
-
-out:
- mlx4_en_destroy_netdev(dev);
- return err;
-}
-