2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/etherdevice.h>
35 #include <linux/tcp.h>
36 #include <linux/if_vlan.h>
37 #include <linux/delay.h>
38 #include <linux/slab.h>
40 #include <linux/mlx4/driver.h>
41 #include <linux/mlx4/device.h>
42 #include <linux/mlx4/cmd.h>
43 #include <linux/mlx4/cq.h>
48 static void mlx4_en_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
50 struct mlx4_en_priv *priv = netdev_priv(dev);
51 struct mlx4_en_dev *mdev = priv->mdev;
55 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
57 set_bit(vid, priv->active_vlans);
59 /* Add VID to port VLAN filter */
60 mutex_lock(&mdev->state_lock);
61 if (mdev->device_up && priv->port_up) {
62 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
64 en_err(priv, "Failed configuring VLAN filter\n");
66 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
67 en_err(priv, "failed adding vlan %d\n", vid);
68 mutex_unlock(&mdev->state_lock);
72 static void mlx4_en_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
74 struct mlx4_en_priv *priv = netdev_priv(dev);
75 struct mlx4_en_dev *mdev = priv->mdev;
79 en_dbg(HW, priv, "Killing VID:%d\n", vid);
81 clear_bit(vid, priv->active_vlans);
83 /* Remove VID from port VLAN filter */
84 mutex_lock(&mdev->state_lock);
85 if (!mlx4_find_cached_vlan(mdev->dev, priv->port, vid, &idx))
86 mlx4_unregister_vlan(mdev->dev, priv->port, idx);
88 en_err(priv, "could not find vid %d in cache\n", vid);
90 if (mdev->device_up && priv->port_up) {
91 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
93 en_err(priv, "Failed configuring VLAN filter\n");
95 mutex_unlock(&mdev->state_lock);
98 u64 mlx4_en_mac_to_u64(u8 *addr)
103 for (i = 0; i < ETH_ALEN; i++) {
110 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
112 struct mlx4_en_priv *priv = netdev_priv(dev);
113 struct mlx4_en_dev *mdev = priv->mdev;
114 struct sockaddr *saddr = addr;
116 if (!is_valid_ether_addr(saddr->sa_data))
117 return -EADDRNOTAVAIL;
119 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
120 priv->mac = mlx4_en_mac_to_u64(dev->dev_addr);
121 queue_work(mdev->workqueue, &priv->mac_task);
125 static void mlx4_en_do_set_mac(struct work_struct *work)
127 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
129 struct mlx4_en_dev *mdev = priv->mdev;
132 mutex_lock(&mdev->state_lock);
134 /* Remove old MAC and insert the new one */
135 err = mlx4_replace_mac(mdev->dev, priv->port,
136 priv->base_qpn, priv->mac, 0);
138 en_err(priv, "Failed changing HW MAC address\n");
140 en_dbg(HW, priv, "Port is down while "
141 "registering mac, exiting...\n");
143 mutex_unlock(&mdev->state_lock);
146 static void mlx4_en_clear_list(struct net_device *dev)
148 struct mlx4_en_priv *priv = netdev_priv(dev);
150 kfree(priv->mc_addrs);
151 priv->mc_addrs_cnt = 0;
154 static void mlx4_en_cache_mclist(struct net_device *dev)
156 struct mlx4_en_priv *priv = netdev_priv(dev);
157 struct netdev_hw_addr *ha;
159 int mc_addrs_cnt = netdev_mc_count(dev);
162 mc_addrs = kmalloc(mc_addrs_cnt * ETH_ALEN, GFP_ATOMIC);
164 en_err(priv, "failed to allocate multicast list\n");
168 netdev_for_each_mc_addr(ha, dev)
169 memcpy(mc_addrs + i++ * ETH_ALEN, ha->addr, ETH_ALEN);
170 priv->mc_addrs = mc_addrs;
171 priv->mc_addrs_cnt = mc_addrs_cnt;
175 static void mlx4_en_set_multicast(struct net_device *dev)
177 struct mlx4_en_priv *priv = netdev_priv(dev);
182 queue_work(priv->mdev->workqueue, &priv->mcast_task);
185 static void mlx4_en_do_set_multicast(struct work_struct *work)
187 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
189 struct mlx4_en_dev *mdev = priv->mdev;
190 struct net_device *dev = priv->dev;
192 u8 mc_list[16] = {0};
195 mutex_lock(&mdev->state_lock);
196 if (!mdev->device_up) {
197 en_dbg(HW, priv, "Card is not up, "
198 "ignoring multicast change.\n");
201 if (!priv->port_up) {
202 en_dbg(HW, priv, "Port is down, "
203 "ignoring multicast change.\n");
208 * Promsicuous mode: disable all filters
211 if (dev->flags & IFF_PROMISC) {
212 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
213 if (netif_msg_rx_status(priv))
214 en_warn(priv, "Entering promiscuous mode\n");
215 priv->flags |= MLX4_EN_FLAG_PROMISC;
217 /* Enable promiscouos mode */
218 if (!mdev->dev->caps.vep_uc_steering)
219 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
222 err = mlx4_unicast_promisc_add(mdev->dev, priv->base_qpn,
225 en_err(priv, "Failed enabling "
226 "promiscuous mode\n");
228 /* Disable port multicast filter (unconditionally) */
229 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
230 0, MLX4_MCAST_DISABLE);
232 en_err(priv, "Failed disabling "
233 "multicast filter\n");
235 /* Add the default qp number as multicast promisc */
236 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
237 err = mlx4_multicast_promisc_add(mdev->dev, priv->base_qpn,
240 en_err(priv, "Failed entering multicast promisc mode\n");
241 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
244 /* Disable port VLAN filter */
245 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
247 en_err(priv, "Failed disabling VLAN filter\n");
253 * Not in promiscuous mode
256 if (priv->flags & MLX4_EN_FLAG_PROMISC) {
257 if (netif_msg_rx_status(priv))
258 en_warn(priv, "Leaving promiscuous mode\n");
259 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
261 /* Disable promiscouos mode */
262 if (!mdev->dev->caps.vep_uc_steering)
263 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
266 err = mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
269 en_err(priv, "Failed disabling promiscuous mode\n");
271 /* Disable Multicast promisc */
272 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
273 err = mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
276 en_err(priv, "Failed disabling multicast promiscuous mode\n");
277 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
280 /* Enable port VLAN filter */
281 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
283 en_err(priv, "Failed enabling VLAN filter\n");
286 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
287 if (dev->flags & IFF_ALLMULTI) {
288 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
289 0, MLX4_MCAST_DISABLE);
291 en_err(priv, "Failed disabling multicast filter\n");
293 /* Add the default qp number as multicast promisc */
294 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
295 err = mlx4_multicast_promisc_add(mdev->dev, priv->base_qpn,
298 en_err(priv, "Failed entering multicast promisc mode\n");
299 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
303 /* Disable Multicast promisc */
304 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
305 err = mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
308 en_err(priv, "Failed disabling multicast promiscuous mode\n");
309 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
312 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
313 0, MLX4_MCAST_DISABLE);
315 en_err(priv, "Failed disabling multicast filter\n");
317 /* Detach our qp from all the multicast addresses */
318 for (i = 0; i < priv->mc_addrs_cnt; i++) {
319 memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
320 mc_list[5] = priv->port;
321 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
322 mc_list, MLX4_PROT_ETH);
324 /* Flush mcast filter and init it with broadcast address */
325 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
326 1, MLX4_MCAST_CONFIG);
328 /* Update multicast list - we cache all addresses so they won't
329 * change while HW is updated holding the command semaphor */
330 netif_tx_lock_bh(dev);
331 mlx4_en_cache_mclist(dev);
332 netif_tx_unlock_bh(dev);
333 for (i = 0; i < priv->mc_addrs_cnt; i++) {
335 mlx4_en_mac_to_u64(priv->mc_addrs + i * ETH_ALEN);
336 memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
337 mc_list[5] = priv->port;
338 mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp,
339 mc_list, 0, MLX4_PROT_ETH);
340 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
341 mcast_addr, 0, MLX4_MCAST_CONFIG);
343 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
344 0, MLX4_MCAST_ENABLE);
346 en_err(priv, "Failed enabling multicast filter\n");
349 mutex_unlock(&mdev->state_lock);
352 #ifdef CONFIG_NET_POLL_CONTROLLER
353 static void mlx4_en_netpoll(struct net_device *dev)
355 struct mlx4_en_priv *priv = netdev_priv(dev);
356 struct mlx4_en_cq *cq;
360 for (i = 0; i < priv->rx_ring_num; i++) {
361 cq = &priv->rx_cq[i];
362 spin_lock_irqsave(&cq->lock, flags);
363 napi_synchronize(&cq->napi);
364 mlx4_en_process_rx_cq(dev, cq, 0);
365 spin_unlock_irqrestore(&cq->lock, flags);
370 static void mlx4_en_tx_timeout(struct net_device *dev)
372 struct mlx4_en_priv *priv = netdev_priv(dev);
373 struct mlx4_en_dev *mdev = priv->mdev;
375 if (netif_msg_timer(priv))
376 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
378 priv->port_stats.tx_timeout++;
379 en_dbg(DRV, priv, "Scheduling watchdog\n");
380 queue_work(mdev->workqueue, &priv->watchdog_task);
384 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
386 struct mlx4_en_priv *priv = netdev_priv(dev);
388 spin_lock_bh(&priv->stats_lock);
389 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
390 spin_unlock_bh(&priv->stats_lock);
392 return &priv->ret_stats;
395 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
397 struct mlx4_en_cq *cq;
400 /* If we haven't received a specific coalescing setting
401 * (module param), we set the moderation parameters as follows:
402 * - moder_cnt is set to the number of mtu sized packets to
403 * satisfy our coelsing target.
404 * - moder_time is set to a fixed value.
406 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
407 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
408 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - "
409 "rx_frames:%d rx_usecs:%d\n",
410 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
412 /* Setup cq moderation params */
413 for (i = 0; i < priv->rx_ring_num; i++) {
414 cq = &priv->rx_cq[i];
415 cq->moder_cnt = priv->rx_frames;
416 cq->moder_time = priv->rx_usecs;
419 for (i = 0; i < priv->tx_ring_num; i++) {
420 cq = &priv->tx_cq[i];
421 cq->moder_cnt = MLX4_EN_TX_COAL_PKTS;
422 cq->moder_time = MLX4_EN_TX_COAL_TIME;
425 /* Reset auto-moderation params */
426 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
427 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
428 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
429 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
430 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
431 priv->adaptive_rx_coal = 1;
432 priv->last_moder_time = MLX4_EN_AUTO_CONF;
433 priv->last_moder_jiffies = 0;
434 priv->last_moder_packets = 0;
435 priv->last_moder_tx_packets = 0;
436 priv->last_moder_bytes = 0;
439 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
441 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
442 struct mlx4_en_cq *cq;
443 unsigned long packets;
445 unsigned long avg_pkt_size;
446 unsigned long rx_packets;
447 unsigned long rx_bytes;
448 unsigned long tx_packets;
449 unsigned long tx_pkt_diff;
450 unsigned long rx_pkt_diff;
454 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
457 spin_lock_bh(&priv->stats_lock);
458 rx_packets = priv->stats.rx_packets;
459 rx_bytes = priv->stats.rx_bytes;
460 tx_packets = priv->stats.tx_packets;
461 spin_unlock_bh(&priv->stats_lock);
463 if (!priv->last_moder_jiffies || !period)
466 tx_pkt_diff = ((unsigned long) (tx_packets -
467 priv->last_moder_tx_packets));
468 rx_pkt_diff = ((unsigned long) (rx_packets -
469 priv->last_moder_packets));
470 packets = max(tx_pkt_diff, rx_pkt_diff);
471 rate = packets * HZ / period;
472 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
473 priv->last_moder_bytes)) / packets : 0;
475 /* Apply auto-moderation only when packet rate exceeds a rate that
477 if (rate > MLX4_EN_RX_RATE_THRESH && avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
478 /* If tx and rx packet rates are not balanced, assume that
479 * traffic is mainly BW bound and apply maximum moderation.
480 * Otherwise, moderate according to packet rate */
481 if (2 * tx_pkt_diff > 3 * rx_pkt_diff ||
482 2 * rx_pkt_diff > 3 * tx_pkt_diff) {
483 moder_time = priv->rx_usecs_high;
485 if (rate < priv->pkt_rate_low)
486 moder_time = priv->rx_usecs_low;
487 else if (rate > priv->pkt_rate_high)
488 moder_time = priv->rx_usecs_high;
490 moder_time = (rate - priv->pkt_rate_low) *
491 (priv->rx_usecs_high - priv->rx_usecs_low) /
492 (priv->pkt_rate_high - priv->pkt_rate_low) +
496 moder_time = priv->rx_usecs_low;
499 en_dbg(INTR, priv, "tx rate:%lu rx_rate:%lu\n",
500 tx_pkt_diff * HZ / period, rx_pkt_diff * HZ / period);
502 en_dbg(INTR, priv, "Rx moder_time changed from:%d to %d period:%lu "
503 "[jiff] packets:%lu avg_pkt_size:%lu rate:%lu [p/s])\n",
504 priv->last_moder_time, moder_time, period, packets,
507 if (moder_time != priv->last_moder_time) {
508 priv->last_moder_time = moder_time;
509 for (i = 0; i < priv->rx_ring_num; i++) {
510 cq = &priv->rx_cq[i];
511 cq->moder_time = moder_time;
512 err = mlx4_en_set_cq_moder(priv, cq);
514 en_err(priv, "Failed modifying moderation for cq:%d\n", i);
521 priv->last_moder_packets = rx_packets;
522 priv->last_moder_tx_packets = tx_packets;
523 priv->last_moder_bytes = rx_bytes;
524 priv->last_moder_jiffies = jiffies;
527 static void mlx4_en_do_get_stats(struct work_struct *work)
529 struct delayed_work *delay = to_delayed_work(work);
530 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
532 struct mlx4_en_dev *mdev = priv->mdev;
535 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
537 en_dbg(HW, priv, "Could not update stats\n");
539 mutex_lock(&mdev->state_lock);
540 if (mdev->device_up) {
542 mlx4_en_auto_moderation(priv);
544 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
546 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
547 queue_work(mdev->workqueue, &priv->mac_task);
548 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
550 mutex_unlock(&mdev->state_lock);
553 static void mlx4_en_linkstate(struct work_struct *work)
555 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
557 struct mlx4_en_dev *mdev = priv->mdev;
558 int linkstate = priv->link_state;
560 mutex_lock(&mdev->state_lock);
561 /* If observable port state changed set carrier state and
562 * report to system log */
563 if (priv->last_link_state != linkstate) {
564 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
565 en_info(priv, "Link Down\n");
566 netif_carrier_off(priv->dev);
568 en_info(priv, "Link Up\n");
569 netif_carrier_on(priv->dev);
572 priv->last_link_state = linkstate;
573 mutex_unlock(&mdev->state_lock);
577 int mlx4_en_start_port(struct net_device *dev)
579 struct mlx4_en_priv *priv = netdev_priv(dev);
580 struct mlx4_en_dev *mdev = priv->mdev;
581 struct mlx4_en_cq *cq;
582 struct mlx4_en_tx_ring *tx_ring;
588 u8 mc_list[16] = {0};
592 en_dbg(DRV, priv, "start port called while port already up\n");
596 /* Calculate Rx buf size */
597 dev->mtu = min(dev->mtu, priv->max_mtu);
598 mlx4_en_calc_rx_buf(dev);
599 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
601 /* Configure rx cq's and rings */
602 err = mlx4_en_activate_rx_rings(priv);
604 en_err(priv, "Failed to activate RX rings\n");
607 for (i = 0; i < priv->rx_ring_num; i++) {
608 cq = &priv->rx_cq[i];
610 err = mlx4_en_activate_cq(priv, cq);
612 en_err(priv, "Failed activating Rx CQ\n");
615 for (j = 0; j < cq->size; j++)
616 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
617 err = mlx4_en_set_cq_moder(priv, cq);
619 en_err(priv, "Failed setting cq moderation parameters");
620 mlx4_en_deactivate_cq(priv, cq);
623 mlx4_en_arm_cq(priv, cq);
624 priv->rx_ring[i].cqn = cq->mcq.cqn;
628 /* Set port mac number */
629 en_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
630 err = mlx4_register_mac(mdev->dev, priv->port,
631 priv->mac, &priv->base_qpn, 0);
633 en_err(priv, "Failed setting port mac\n");
636 mdev->mac_removed[priv->port] = 0;
638 err = mlx4_en_config_rss_steer(priv);
640 en_err(priv, "Failed configuring rss steering\n");
644 if (mdev->dev->caps.comp_pool && !priv->tx_vector) {
645 sprintf(name , "%s-tx", priv->dev->name);
646 if (mlx4_assign_eq(mdev->dev , name, &priv->tx_vector)) {
647 mlx4_warn(mdev, "Failed Assigning an EQ to "
648 "%s_tx ,Falling back to legacy "
649 "EQ's\n", priv->dev->name);
652 /* Configure tx cq's and rings */
653 for (i = 0; i < priv->tx_ring_num; i++) {
655 cq = &priv->tx_cq[i];
656 cq->vector = priv->tx_vector;
657 err = mlx4_en_activate_cq(priv, cq);
659 en_err(priv, "Failed allocating Tx CQ\n");
662 err = mlx4_en_set_cq_moder(priv, cq);
664 en_err(priv, "Failed setting cq moderation parameters");
665 mlx4_en_deactivate_cq(priv, cq);
668 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
669 cq->buf->wqe_index = cpu_to_be16(0xffff);
672 tx_ring = &priv->tx_ring[i];
673 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn);
675 en_err(priv, "Failed allocating Tx ring\n");
676 mlx4_en_deactivate_cq(priv, cq);
679 /* Set initial ownership of all Tx TXBBs to SW (1) */
680 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
681 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
686 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
687 priv->rx_skb_size + ETH_FCS_LEN,
688 priv->prof->tx_pause,
690 priv->prof->rx_pause,
693 en_err(priv, "Failed setting port general configurations "
694 "for port %d, with error %d\n", priv->port, err);
697 /* Set default qp number */
698 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
700 en_err(priv, "Failed setting default qp numbers\n");
705 en_dbg(HW, priv, "Initializing port\n");
706 err = mlx4_INIT_PORT(mdev->dev, priv->port);
708 en_err(priv, "Failed Initializing port\n");
712 /* Attach rx QP to bradcast address */
713 memset(&mc_list[10], 0xff, ETH_ALEN);
714 mc_list[5] = priv->port;
715 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
717 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
719 /* Must redo promiscuous mode setup. */
720 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
722 /* Schedule multicast task to populate multicast list */
723 queue_work(mdev->workqueue, &priv->mcast_task);
725 priv->port_up = true;
726 netif_tx_start_all_queues(dev);
731 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
732 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
735 mlx4_en_release_rss_steer(priv);
737 mlx4_unregister_mac(mdev->dev, priv->port, priv->base_qpn);
740 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
741 for (i = 0; i < priv->rx_ring_num; i++)
742 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
744 return err; /* need to close devices */
748 void mlx4_en_stop_port(struct net_device *dev)
750 struct mlx4_en_priv *priv = netdev_priv(dev);
751 struct mlx4_en_dev *mdev = priv->mdev;
753 u8 mc_list[16] = {0};
755 if (!priv->port_up) {
756 en_dbg(DRV, priv, "stop port called while port already down\n");
760 /* Synchronize with tx routine */
761 netif_tx_lock_bh(dev);
762 netif_tx_stop_all_queues(dev);
763 netif_tx_unlock_bh(dev);
765 /* Set port as not active */
766 priv->port_up = false;
768 /* Detach All multicasts */
769 memset(&mc_list[10], 0xff, ETH_ALEN);
770 mc_list[5] = priv->port;
771 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
773 for (i = 0; i < priv->mc_addrs_cnt; i++) {
774 memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
775 mc_list[5] = priv->port;
776 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
777 mc_list, MLX4_PROT_ETH);
779 mlx4_en_clear_list(dev);
780 /* Flush multicast filter */
781 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
783 /* Unregister Mac address for the port */
784 mlx4_unregister_mac(mdev->dev, priv->port, priv->base_qpn);
785 mdev->mac_removed[priv->port] = 1;
788 for (i = 0; i < priv->tx_ring_num; i++) {
789 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
790 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
794 for (i = 0; i < priv->tx_ring_num; i++)
795 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
798 mlx4_en_release_rss_steer(priv);
801 for (i = 0; i < priv->rx_ring_num; i++) {
802 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
803 while (test_bit(NAPI_STATE_SCHED, &priv->rx_cq[i].napi.state))
805 mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
809 mlx4_CLOSE_PORT(mdev->dev, priv->port);
812 static void mlx4_en_restart(struct work_struct *work)
814 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
816 struct mlx4_en_dev *mdev = priv->mdev;
817 struct net_device *dev = priv->dev;
819 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
821 mutex_lock(&mdev->state_lock);
823 mlx4_en_stop_port(dev);
824 if (mlx4_en_start_port(dev))
825 en_err(priv, "Failed restarting port %d\n", priv->port);
827 mutex_unlock(&mdev->state_lock);
831 static int mlx4_en_open(struct net_device *dev)
833 struct mlx4_en_priv *priv = netdev_priv(dev);
834 struct mlx4_en_dev *mdev = priv->mdev;
838 mutex_lock(&mdev->state_lock);
840 if (!mdev->device_up) {
841 en_err(priv, "Cannot open - device down/disabled\n");
846 /* Reset HW statistics and performance counters */
847 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
848 en_dbg(HW, priv, "Failed dumping statistics\n");
850 memset(&priv->stats, 0, sizeof(priv->stats));
851 memset(&priv->pstats, 0, sizeof(priv->pstats));
853 for (i = 0; i < priv->tx_ring_num; i++) {
854 priv->tx_ring[i].bytes = 0;
855 priv->tx_ring[i].packets = 0;
857 for (i = 0; i < priv->rx_ring_num; i++) {
858 priv->rx_ring[i].bytes = 0;
859 priv->rx_ring[i].packets = 0;
862 err = mlx4_en_start_port(dev);
864 en_err(priv, "Failed starting port:%d\n", priv->port);
867 mutex_unlock(&mdev->state_lock);
872 static int mlx4_en_close(struct net_device *dev)
874 struct mlx4_en_priv *priv = netdev_priv(dev);
875 struct mlx4_en_dev *mdev = priv->mdev;
877 en_dbg(IFDOWN, priv, "Close port called\n");
879 mutex_lock(&mdev->state_lock);
881 mlx4_en_stop_port(dev);
882 netif_carrier_off(dev);
884 mutex_unlock(&mdev->state_lock);
888 void mlx4_en_free_resources(struct mlx4_en_priv *priv, bool reserve_vectors)
892 for (i = 0; i < priv->tx_ring_num; i++) {
893 if (priv->tx_ring[i].tx_info)
894 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
895 if (priv->tx_cq[i].buf)
896 mlx4_en_destroy_cq(priv, &priv->tx_cq[i], reserve_vectors);
899 for (i = 0; i < priv->rx_ring_num; i++) {
900 if (priv->rx_ring[i].rx_info)
901 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
902 if (priv->rx_cq[i].buf)
903 mlx4_en_destroy_cq(priv, &priv->rx_cq[i], reserve_vectors);
907 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
909 struct mlx4_en_port_profile *prof = priv->prof;
911 int base_tx_qpn, err;
913 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &base_tx_qpn);
915 en_err(priv, "failed reserving range for TX rings\n");
919 /* Create tx Rings */
920 for (i = 0; i < priv->tx_ring_num; i++) {
921 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
922 prof->tx_ring_size, i, TX))
925 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], base_tx_qpn + i,
926 prof->tx_ring_size, TXBB_SIZE))
930 /* Create rx Rings */
931 for (i = 0; i < priv->rx_ring_num; i++) {
932 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
933 prof->rx_ring_size, i, RX))
936 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
937 prof->rx_ring_size, priv->stride))
944 en_err(priv, "Failed to allocate NIC resources\n");
945 mlx4_qp_release_range(priv->mdev->dev, base_tx_qpn, priv->tx_ring_num);
950 void mlx4_en_destroy_netdev(struct net_device *dev)
952 struct mlx4_en_priv *priv = netdev_priv(dev);
953 struct mlx4_en_dev *mdev = priv->mdev;
955 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
957 /* Unregister device - this will close the port if it was up */
958 if (priv->registered)
959 unregister_netdev(dev);
962 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
964 cancel_delayed_work(&priv->stats_task);
965 /* flush any pending task for this netdev */
966 flush_workqueue(mdev->workqueue);
968 /* Detach the netdev so tasks would not attempt to access it */
969 mutex_lock(&mdev->state_lock);
970 mdev->pndev[priv->port] = NULL;
971 mutex_unlock(&mdev->state_lock);
973 mlx4_en_free_resources(priv, false);
977 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
979 struct mlx4_en_priv *priv = netdev_priv(dev);
980 struct mlx4_en_dev *mdev = priv->mdev;
983 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
986 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
987 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
992 if (netif_running(dev)) {
993 mutex_lock(&mdev->state_lock);
994 if (!mdev->device_up) {
995 /* NIC is probably restarting - let watchdog task reset
997 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
999 mlx4_en_stop_port(dev);
1000 err = mlx4_en_start_port(dev);
1002 en_err(priv, "Failed restarting port:%d\n",
1004 queue_work(mdev->workqueue, &priv->watchdog_task);
1007 mutex_unlock(&mdev->state_lock);
1012 static const struct net_device_ops mlx4_netdev_ops = {
1013 .ndo_open = mlx4_en_open,
1014 .ndo_stop = mlx4_en_close,
1015 .ndo_start_xmit = mlx4_en_xmit,
1016 .ndo_select_queue = mlx4_en_select_queue,
1017 .ndo_get_stats = mlx4_en_get_stats,
1018 .ndo_set_multicast_list = mlx4_en_set_multicast,
1019 .ndo_set_mac_address = mlx4_en_set_mac,
1020 .ndo_validate_addr = eth_validate_addr,
1021 .ndo_change_mtu = mlx4_en_change_mtu,
1022 .ndo_tx_timeout = mlx4_en_tx_timeout,
1023 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
1024 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
1025 #ifdef CONFIG_NET_POLL_CONTROLLER
1026 .ndo_poll_controller = mlx4_en_netpoll,
1030 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
1031 struct mlx4_en_port_profile *prof)
1033 struct net_device *dev;
1034 struct mlx4_en_priv *priv;
1038 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
1039 prof->tx_ring_num, prof->rx_ring_num);
1041 mlx4_err(mdev, "Net device allocation failed\n");
1045 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
1046 dev->dev_id = port - 1;
1049 * Initialize driver private data
1052 priv = netdev_priv(dev);
1053 memset(priv, 0, sizeof(struct mlx4_en_priv));
1058 priv->port_up = false;
1059 priv->flags = prof->flags;
1060 priv->tx_ring_num = prof->tx_ring_num;
1061 priv->rx_ring_num = prof->rx_ring_num;
1062 priv->mac_index = -1;
1063 priv->msg_enable = MLX4_EN_MSG_LEVEL;
1064 spin_lock_init(&priv->stats_lock);
1065 INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
1066 INIT_WORK(&priv->mac_task, mlx4_en_do_set_mac);
1067 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
1068 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
1069 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
1071 /* Query for default mac and max mtu */
1072 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
1073 priv->mac = mdev->dev->caps.def_mac[priv->port];
1074 if (ILLEGAL_MAC(priv->mac)) {
1075 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
1076 priv->port, priv->mac);
1081 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
1082 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
1083 err = mlx4_en_alloc_resources(priv);
1087 /* Allocate page for receive rings */
1088 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
1089 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
1091 en_err(priv, "Failed to allocate page for rx qps\n");
1094 priv->allocated = 1;
1097 * Initialize netdev entry points
1099 dev->netdev_ops = &mlx4_netdev_ops;
1100 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
1101 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
1102 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
1104 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
1106 /* Set defualt MAC */
1107 dev->addr_len = ETH_ALEN;
1108 for (i = 0; i < ETH_ALEN; i++) {
1109 dev->dev_addr[ETH_ALEN - 1 - i] = (u8) (priv->mac >> (8 * i));
1110 dev->perm_addr[ETH_ALEN - 1 - i] = (u8) (priv->mac >> (8 * i));
1114 * Set driver features
1116 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
1117 if (mdev->LSO_support)
1118 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
1120 dev->vlan_features = dev->hw_features;
1122 dev->hw_features |= NETIF_F_RXCSUM;
1123 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
1124 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
1125 NETIF_F_HW_VLAN_FILTER;
1127 mdev->pndev[port] = dev;
1129 netif_carrier_off(dev);
1130 err = register_netdev(dev);
1132 en_err(priv, "Netdev registration failed for port %d\n", port);
1136 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
1137 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
1139 /* Configure port */
1140 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1144 en_err(priv, "Failed setting port general configurations "
1145 "for port %d, with error %d\n", priv->port, err);
1150 en_warn(priv, "Initializing port\n");
1151 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1153 en_err(priv, "Failed Initializing port\n");
1156 priv->registered = 1;
1157 mlx4_en_set_default_moderation(priv);
1158 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1162 mlx4_en_destroy_netdev(dev);