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.flags &
219 MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
220 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
223 err = mlx4_unicast_promisc_add(mdev->dev, priv->base_qpn,
226 en_err(priv, "Failed enabling "
227 "promiscuous mode\n");
229 /* Disable port multicast filter (unconditionally) */
230 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
231 0, MLX4_MCAST_DISABLE);
233 en_err(priv, "Failed disabling "
234 "multicast filter\n");
236 /* Add the default qp number as multicast promisc */
237 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
238 err = mlx4_multicast_promisc_add(mdev->dev, priv->base_qpn,
241 en_err(priv, "Failed entering multicast promisc mode\n");
242 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
245 /* Disable port VLAN filter */
246 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
248 en_err(priv, "Failed disabling VLAN filter\n");
254 * Not in promiscuous mode
257 if (priv->flags & MLX4_EN_FLAG_PROMISC) {
258 if (netif_msg_rx_status(priv))
259 en_warn(priv, "Leaving promiscuous mode\n");
260 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
262 /* Disable promiscouos mode */
263 if (!(mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
264 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
267 err = mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
270 en_err(priv, "Failed disabling promiscuous mode\n");
272 /* Disable Multicast promisc */
273 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
274 err = mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
277 en_err(priv, "Failed disabling multicast promiscuous mode\n");
278 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
281 /* Enable port VLAN filter */
282 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
284 en_err(priv, "Failed enabling VLAN filter\n");
287 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
288 if (dev->flags & IFF_ALLMULTI) {
289 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
290 0, MLX4_MCAST_DISABLE);
292 en_err(priv, "Failed disabling multicast filter\n");
294 /* Add the default qp number as multicast promisc */
295 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
296 err = mlx4_multicast_promisc_add(mdev->dev, priv->base_qpn,
299 en_err(priv, "Failed entering multicast promisc mode\n");
300 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
304 /* Disable Multicast promisc */
305 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
306 err = mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
309 en_err(priv, "Failed disabling multicast promiscuous mode\n");
310 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
313 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
314 0, MLX4_MCAST_DISABLE);
316 en_err(priv, "Failed disabling multicast filter\n");
318 /* Detach our qp from all the multicast addresses */
319 for (i = 0; i < priv->mc_addrs_cnt; i++) {
320 memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
321 mc_list[5] = priv->port;
322 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
323 mc_list, MLX4_PROT_ETH);
325 /* Flush mcast filter and init it with broadcast address */
326 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
327 1, MLX4_MCAST_CONFIG);
329 /* Update multicast list - we cache all addresses so they won't
330 * change while HW is updated holding the command semaphor */
331 netif_tx_lock_bh(dev);
332 mlx4_en_cache_mclist(dev);
333 netif_tx_unlock_bh(dev);
334 for (i = 0; i < priv->mc_addrs_cnt; i++) {
336 mlx4_en_mac_to_u64(priv->mc_addrs + i * ETH_ALEN);
337 memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
338 mc_list[5] = priv->port;
339 mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp,
340 mc_list, 0, MLX4_PROT_ETH);
341 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
342 mcast_addr, 0, MLX4_MCAST_CONFIG);
344 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
345 0, MLX4_MCAST_ENABLE);
347 en_err(priv, "Failed enabling multicast filter\n");
350 mutex_unlock(&mdev->state_lock);
353 #ifdef CONFIG_NET_POLL_CONTROLLER
354 static void mlx4_en_netpoll(struct net_device *dev)
356 struct mlx4_en_priv *priv = netdev_priv(dev);
357 struct mlx4_en_cq *cq;
360 for (i = 0; i < priv->rx_ring_num; i++) {
361 cq = &priv->rx_cq[i];
362 napi_schedule(&cq->napi);
367 static void mlx4_en_tx_timeout(struct net_device *dev)
369 struct mlx4_en_priv *priv = netdev_priv(dev);
370 struct mlx4_en_dev *mdev = priv->mdev;
372 if (netif_msg_timer(priv))
373 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
375 priv->port_stats.tx_timeout++;
376 en_dbg(DRV, priv, "Scheduling watchdog\n");
377 queue_work(mdev->workqueue, &priv->watchdog_task);
381 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
383 struct mlx4_en_priv *priv = netdev_priv(dev);
385 spin_lock_bh(&priv->stats_lock);
386 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
387 spin_unlock_bh(&priv->stats_lock);
389 return &priv->ret_stats;
392 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
394 struct mlx4_en_cq *cq;
397 /* If we haven't received a specific coalescing setting
398 * (module param), we set the moderation parameters as follows:
399 * - moder_cnt is set to the number of mtu sized packets to
400 * satisfy our coelsing target.
401 * - moder_time is set to a fixed value.
403 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
404 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
405 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - "
406 "rx_frames:%d rx_usecs:%d\n",
407 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
409 /* Setup cq moderation params */
410 for (i = 0; i < priv->rx_ring_num; i++) {
411 cq = &priv->rx_cq[i];
412 cq->moder_cnt = priv->rx_frames;
413 cq->moder_time = priv->rx_usecs;
414 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
415 priv->last_moder_packets[i] = 0;
416 priv->last_moder_bytes[i] = 0;
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_jiffies = 0;
433 priv->last_moder_tx_packets = 0;
436 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
438 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
439 struct mlx4_en_cq *cq;
440 unsigned long packets;
442 unsigned long avg_pkt_size;
443 unsigned long rx_packets;
444 unsigned long rx_bytes;
445 unsigned long rx_pkt_diff;
449 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
452 for (ring = 0; ring < priv->rx_ring_num; ring++) {
453 spin_lock_bh(&priv->stats_lock);
454 rx_packets = priv->rx_ring[ring].packets;
455 rx_bytes = priv->rx_ring[ring].bytes;
456 spin_unlock_bh(&priv->stats_lock);
458 rx_pkt_diff = ((unsigned long) (rx_packets -
459 priv->last_moder_packets[ring]));
460 packets = rx_pkt_diff;
461 rate = packets * HZ / period;
462 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
463 priv->last_moder_bytes[ring])) / packets : 0;
465 /* Apply auto-moderation only when packet rate
466 * exceeds a rate that it matters */
467 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
468 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
469 if (rate < priv->pkt_rate_low)
470 moder_time = priv->rx_usecs_low;
471 else if (rate > priv->pkt_rate_high)
472 moder_time = priv->rx_usecs_high;
474 moder_time = (rate - priv->pkt_rate_low) *
475 (priv->rx_usecs_high - priv->rx_usecs_low) /
476 (priv->pkt_rate_high - priv->pkt_rate_low) +
479 moder_time = priv->rx_usecs_low;
482 if (moder_time != priv->last_moder_time[ring]) {
483 priv->last_moder_time[ring] = moder_time;
484 cq = &priv->rx_cq[ring];
485 cq->moder_time = moder_time;
486 err = mlx4_en_set_cq_moder(priv, cq);
488 en_err(priv, "Failed modifying moderation "
489 "for cq:%d\n", ring);
491 priv->last_moder_packets[ring] = rx_packets;
492 priv->last_moder_bytes[ring] = rx_bytes;
495 priv->last_moder_jiffies = jiffies;
498 static void mlx4_en_do_get_stats(struct work_struct *work)
500 struct delayed_work *delay = to_delayed_work(work);
501 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
503 struct mlx4_en_dev *mdev = priv->mdev;
506 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
508 en_dbg(HW, priv, "Could not update stats\n");
510 mutex_lock(&mdev->state_lock);
511 if (mdev->device_up) {
513 mlx4_en_auto_moderation(priv);
515 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
517 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
518 queue_work(mdev->workqueue, &priv->mac_task);
519 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
521 mutex_unlock(&mdev->state_lock);
524 static void mlx4_en_linkstate(struct work_struct *work)
526 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
528 struct mlx4_en_dev *mdev = priv->mdev;
529 int linkstate = priv->link_state;
531 mutex_lock(&mdev->state_lock);
532 /* If observable port state changed set carrier state and
533 * report to system log */
534 if (priv->last_link_state != linkstate) {
535 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
536 en_info(priv, "Link Down\n");
537 netif_carrier_off(priv->dev);
539 en_info(priv, "Link Up\n");
540 netif_carrier_on(priv->dev);
543 priv->last_link_state = linkstate;
544 mutex_unlock(&mdev->state_lock);
548 int mlx4_en_start_port(struct net_device *dev)
550 struct mlx4_en_priv *priv = netdev_priv(dev);
551 struct mlx4_en_dev *mdev = priv->mdev;
552 struct mlx4_en_cq *cq;
553 struct mlx4_en_tx_ring *tx_ring;
559 u8 mc_list[16] = {0};
562 en_dbg(DRV, priv, "start port called while port already up\n");
566 /* Calculate Rx buf size */
567 dev->mtu = min(dev->mtu, priv->max_mtu);
568 mlx4_en_calc_rx_buf(dev);
569 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
571 /* Configure rx cq's and rings */
572 err = mlx4_en_activate_rx_rings(priv);
574 en_err(priv, "Failed to activate RX rings\n");
577 for (i = 0; i < priv->rx_ring_num; i++) {
578 cq = &priv->rx_cq[i];
580 err = mlx4_en_activate_cq(priv, cq, i);
582 en_err(priv, "Failed activating Rx CQ\n");
585 for (j = 0; j < cq->size; j++)
586 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
587 err = mlx4_en_set_cq_moder(priv, cq);
589 en_err(priv, "Failed setting cq moderation parameters");
590 mlx4_en_deactivate_cq(priv, cq);
593 mlx4_en_arm_cq(priv, cq);
594 priv->rx_ring[i].cqn = cq->mcq.cqn;
598 /* Set port mac number */
599 en_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
600 err = mlx4_register_mac(mdev->dev, priv->port,
601 priv->mac, &priv->base_qpn, 0);
603 en_err(priv, "Failed setting port mac\n");
606 mdev->mac_removed[priv->port] = 0;
608 err = mlx4_en_config_rss_steer(priv);
610 en_err(priv, "Failed configuring rss steering\n");
614 /* Configure tx cq's and rings */
615 for (i = 0; i < priv->tx_ring_num; i++) {
617 cq = &priv->tx_cq[i];
618 err = mlx4_en_activate_cq(priv, cq, i);
620 en_err(priv, "Failed allocating Tx CQ\n");
623 err = mlx4_en_set_cq_moder(priv, cq);
625 en_err(priv, "Failed setting cq moderation parameters");
626 mlx4_en_deactivate_cq(priv, cq);
629 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
630 cq->buf->wqe_index = cpu_to_be16(0xffff);
633 tx_ring = &priv->tx_ring[i];
634 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn);
636 en_err(priv, "Failed allocating Tx ring\n");
637 mlx4_en_deactivate_cq(priv, cq);
640 /* Set initial ownership of all Tx TXBBs to SW (1) */
641 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
642 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
647 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
648 priv->rx_skb_size + ETH_FCS_LEN,
649 priv->prof->tx_pause,
651 priv->prof->rx_pause,
654 en_err(priv, "Failed setting port general configurations "
655 "for port %d, with error %d\n", priv->port, err);
658 /* Set default qp number */
659 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
661 en_err(priv, "Failed setting default qp numbers\n");
666 en_dbg(HW, priv, "Initializing port\n");
667 err = mlx4_INIT_PORT(mdev->dev, priv->port);
669 en_err(priv, "Failed Initializing port\n");
673 /* Attach rx QP to bradcast address */
674 memset(&mc_list[10], 0xff, ETH_ALEN);
675 mc_list[5] = priv->port;
676 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
678 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
680 /* Must redo promiscuous mode setup. */
681 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
683 /* Schedule multicast task to populate multicast list */
684 queue_work(mdev->workqueue, &priv->mcast_task);
686 priv->port_up = true;
688 /* Process all completions if exist to prevent
689 * the queues freezing if they are full
691 for (i = 0; i < priv->rx_ring_num; i++)
692 napi_schedule(&priv->rx_cq[i].napi);
694 netif_tx_start_all_queues(dev);
699 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
700 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
703 mlx4_en_release_rss_steer(priv);
705 mlx4_unregister_mac(mdev->dev, priv->port, priv->base_qpn);
708 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
709 for (i = 0; i < priv->rx_ring_num; i++)
710 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
712 return err; /* need to close devices */
716 void mlx4_en_stop_port(struct net_device *dev)
718 struct mlx4_en_priv *priv = netdev_priv(dev);
719 struct mlx4_en_dev *mdev = priv->mdev;
721 u8 mc_list[16] = {0};
723 if (!priv->port_up) {
724 en_dbg(DRV, priv, "stop port called while port already down\n");
728 /* Synchronize with tx routine */
729 netif_tx_lock_bh(dev);
730 netif_tx_stop_all_queues(dev);
731 netif_tx_unlock_bh(dev);
733 /* Set port as not active */
734 priv->port_up = false;
736 /* Detach All multicasts */
737 memset(&mc_list[10], 0xff, ETH_ALEN);
738 mc_list[5] = priv->port;
739 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
741 for (i = 0; i < priv->mc_addrs_cnt; i++) {
742 memcpy(&mc_list[10], priv->mc_addrs + i * ETH_ALEN, ETH_ALEN);
743 mc_list[5] = priv->port;
744 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
745 mc_list, MLX4_PROT_ETH);
747 mlx4_en_clear_list(dev);
748 /* Flush multicast filter */
749 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
751 /* Unregister Mac address for the port */
752 mlx4_unregister_mac(mdev->dev, priv->port, priv->base_qpn);
753 mdev->mac_removed[priv->port] = 1;
756 for (i = 0; i < priv->tx_ring_num; i++) {
757 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
758 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
762 for (i = 0; i < priv->tx_ring_num; i++)
763 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
766 mlx4_en_release_rss_steer(priv);
769 for (i = 0; i < priv->rx_ring_num; i++) {
770 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
771 while (test_bit(NAPI_STATE_SCHED, &priv->rx_cq[i].napi.state))
773 mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
777 mlx4_CLOSE_PORT(mdev->dev, priv->port);
780 static void mlx4_en_restart(struct work_struct *work)
782 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
784 struct mlx4_en_dev *mdev = priv->mdev;
785 struct net_device *dev = priv->dev;
787 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
789 mutex_lock(&mdev->state_lock);
791 mlx4_en_stop_port(dev);
792 if (mlx4_en_start_port(dev))
793 en_err(priv, "Failed restarting port %d\n", priv->port);
795 mutex_unlock(&mdev->state_lock);
799 static int mlx4_en_open(struct net_device *dev)
801 struct mlx4_en_priv *priv = netdev_priv(dev);
802 struct mlx4_en_dev *mdev = priv->mdev;
806 mutex_lock(&mdev->state_lock);
808 if (!mdev->device_up) {
809 en_err(priv, "Cannot open - device down/disabled\n");
814 /* Reset HW statistics and performance counters */
815 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
816 en_dbg(HW, priv, "Failed dumping statistics\n");
818 memset(&priv->stats, 0, sizeof(priv->stats));
819 memset(&priv->pstats, 0, sizeof(priv->pstats));
821 for (i = 0; i < priv->tx_ring_num; i++) {
822 priv->tx_ring[i].bytes = 0;
823 priv->tx_ring[i].packets = 0;
825 for (i = 0; i < priv->rx_ring_num; i++) {
826 priv->rx_ring[i].bytes = 0;
827 priv->rx_ring[i].packets = 0;
830 err = mlx4_en_start_port(dev);
832 en_err(priv, "Failed starting port:%d\n", priv->port);
835 mutex_unlock(&mdev->state_lock);
840 static int mlx4_en_close(struct net_device *dev)
842 struct mlx4_en_priv *priv = netdev_priv(dev);
843 struct mlx4_en_dev *mdev = priv->mdev;
845 en_dbg(IFDOWN, priv, "Close port called\n");
847 mutex_lock(&mdev->state_lock);
849 mlx4_en_stop_port(dev);
850 netif_carrier_off(dev);
852 mutex_unlock(&mdev->state_lock);
856 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
860 for (i = 0; i < priv->tx_ring_num; i++) {
861 if (priv->tx_ring[i].tx_info)
862 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
863 if (priv->tx_cq[i].buf)
864 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
867 for (i = 0; i < priv->rx_ring_num; i++) {
868 if (priv->rx_ring[i].rx_info)
869 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
870 if (priv->rx_cq[i].buf)
871 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
875 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
877 struct mlx4_en_port_profile *prof = priv->prof;
879 int base_tx_qpn, err;
881 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &base_tx_qpn);
883 en_err(priv, "failed reserving range for TX rings\n");
887 /* Create tx Rings */
888 for (i = 0; i < priv->tx_ring_num; i++) {
889 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
890 prof->tx_ring_size, i, TX))
893 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], base_tx_qpn + i,
894 prof->tx_ring_size, TXBB_SIZE))
898 /* Create rx Rings */
899 for (i = 0; i < priv->rx_ring_num; i++) {
900 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
901 prof->rx_ring_size, i, RX))
904 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
905 prof->rx_ring_size, priv->stride))
912 en_err(priv, "Failed to allocate NIC resources\n");
913 mlx4_qp_release_range(priv->mdev->dev, base_tx_qpn, priv->tx_ring_num);
918 void mlx4_en_destroy_netdev(struct net_device *dev)
920 struct mlx4_en_priv *priv = netdev_priv(dev);
921 struct mlx4_en_dev *mdev = priv->mdev;
923 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
925 /* Unregister device - this will close the port if it was up */
926 if (priv->registered)
927 unregister_netdev(dev);
930 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
932 cancel_delayed_work(&priv->stats_task);
933 /* flush any pending task for this netdev */
934 flush_workqueue(mdev->workqueue);
936 /* Detach the netdev so tasks would not attempt to access it */
937 mutex_lock(&mdev->state_lock);
938 mdev->pndev[priv->port] = NULL;
939 mutex_unlock(&mdev->state_lock);
941 mlx4_en_free_resources(priv);
945 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
947 struct mlx4_en_priv *priv = netdev_priv(dev);
948 struct mlx4_en_dev *mdev = priv->mdev;
951 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
954 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
955 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
960 if (netif_running(dev)) {
961 mutex_lock(&mdev->state_lock);
962 if (!mdev->device_up) {
963 /* NIC is probably restarting - let watchdog task reset
965 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
967 mlx4_en_stop_port(dev);
968 err = mlx4_en_start_port(dev);
970 en_err(priv, "Failed restarting port:%d\n",
972 queue_work(mdev->workqueue, &priv->watchdog_task);
975 mutex_unlock(&mdev->state_lock);
980 static const struct net_device_ops mlx4_netdev_ops = {
981 .ndo_open = mlx4_en_open,
982 .ndo_stop = mlx4_en_close,
983 .ndo_start_xmit = mlx4_en_xmit,
984 .ndo_select_queue = mlx4_en_select_queue,
985 .ndo_get_stats = mlx4_en_get_stats,
986 .ndo_set_rx_mode = mlx4_en_set_multicast,
987 .ndo_set_mac_address = mlx4_en_set_mac,
988 .ndo_validate_addr = eth_validate_addr,
989 .ndo_change_mtu = mlx4_en_change_mtu,
990 .ndo_tx_timeout = mlx4_en_tx_timeout,
991 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
992 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
993 #ifdef CONFIG_NET_POLL_CONTROLLER
994 .ndo_poll_controller = mlx4_en_netpoll,
998 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
999 struct mlx4_en_port_profile *prof)
1001 struct net_device *dev;
1002 struct mlx4_en_priv *priv;
1006 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
1007 prof->tx_ring_num, prof->rx_ring_num);
1009 mlx4_err(mdev, "Net device allocation failed\n");
1013 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
1014 dev->dev_id = port - 1;
1017 * Initialize driver private data
1020 priv = netdev_priv(dev);
1021 memset(priv, 0, sizeof(struct mlx4_en_priv));
1026 priv->port_up = false;
1027 priv->flags = prof->flags;
1028 priv->tx_ring_num = prof->tx_ring_num;
1029 priv->rx_ring_num = prof->rx_ring_num;
1030 priv->mac_index = -1;
1031 priv->msg_enable = MLX4_EN_MSG_LEVEL;
1032 spin_lock_init(&priv->stats_lock);
1033 INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
1034 INIT_WORK(&priv->mac_task, mlx4_en_do_set_mac);
1035 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
1036 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
1037 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
1039 /* Query for default mac and max mtu */
1040 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
1041 priv->mac = mdev->dev->caps.def_mac[priv->port];
1042 if (ILLEGAL_MAC(priv->mac)) {
1043 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
1044 priv->port, priv->mac);
1049 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
1050 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
1051 err = mlx4_en_alloc_resources(priv);
1055 /* Allocate page for receive rings */
1056 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
1057 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
1059 en_err(priv, "Failed to allocate page for rx qps\n");
1062 priv->allocated = 1;
1065 * Initialize netdev entry points
1067 dev->netdev_ops = &mlx4_netdev_ops;
1068 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
1069 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
1070 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
1072 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
1074 /* Set defualt MAC */
1075 dev->addr_len = ETH_ALEN;
1076 for (i = 0; i < ETH_ALEN; i++) {
1077 dev->dev_addr[ETH_ALEN - 1 - i] = (u8) (priv->mac >> (8 * i));
1078 dev->perm_addr[ETH_ALEN - 1 - i] = (u8) (priv->mac >> (8 * i));
1082 * Set driver features
1084 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
1085 if (mdev->LSO_support)
1086 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
1088 dev->vlan_features = dev->hw_features;
1090 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
1091 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
1092 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
1093 NETIF_F_HW_VLAN_FILTER;
1095 mdev->pndev[port] = dev;
1097 netif_carrier_off(dev);
1098 err = register_netdev(dev);
1100 en_err(priv, "Netdev registration failed for port %d\n", port);
1103 priv->registered = 1;
1105 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
1106 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
1108 /* Configure port */
1109 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1113 en_err(priv, "Failed setting port general configurations "
1114 "for port %d, with error %d\n", priv->port, err);
1119 en_warn(priv, "Initializing port\n");
1120 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1122 en_err(priv, "Failed Initializing port\n");
1125 mlx4_en_set_default_moderation(priv);
1126 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1130 mlx4_en_destroy_netdev(dev);