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
36 #include <linux/mlx4/driver.h>
37 #include <linux/mlx4/device.h>
38 #include <linux/mlx4/cmd.h>
39 #include <linux/mlx4/cq.h>
41 #include <linux/delay.h>
42 #include <net/ethernet.h>
43 #include <net/if_vlan_var.h>
44 #include <sys/sockio.h>
46 static void mlx4_en_init_locked(struct mlx4_en_priv *priv);
47 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv);
49 static void mlx4_en_vlan_rx_add_vid(void *arg, struct net_device *dev, u16 vid)
51 struct mlx4_en_priv *priv = netdev_priv(dev);
58 if ((vid == 0) || (vid > 4095)) /* Invalid */
60 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
62 field = 1 << (vid & 0x1f);
63 spin_lock(&priv->vlan_lock);
64 priv->vlgrp_modified = true;
65 if (priv->vlan_unregister[idx] & field)
66 priv->vlan_unregister[idx] &= ~field;
68 priv->vlan_register[idx] |= field;
69 priv->vlans[idx] |= field;
70 spin_unlock(&priv->vlan_lock);
73 static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid)
75 struct mlx4_en_priv *priv = netdev_priv(dev);
82 if ((vid == 0) || (vid > 4095)) /* Invalid */
84 en_dbg(HW, priv, "Killing VID:%d\n", vid);
86 field = 1 << (vid & 0x1f);
87 spin_lock(&priv->vlan_lock);
88 priv->vlgrp_modified = true;
89 if (priv->vlan_register[idx] & field)
90 priv->vlan_register[idx] &= ~field;
92 priv->vlan_unregister[idx] |= field;
93 priv->vlans[idx] &= ~field;
94 spin_unlock(&priv->vlan_lock);
97 u64 mlx4_en_mac_to_u64(u8 *addr)
102 for (i = 0; i < ETHER_ADDR_LEN; i++) {
109 static int mlx4_en_cache_mclist(struct net_device *dev, u64 **mcaddrp)
111 struct ifmultiaddr *ifma;
120 TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
121 if (ifma->ifma_addr->sa_family != AF_LINK)
123 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
128 if_maddr_runlock(dev);
131 mcaddr = kmalloc(sizeof(u64) * cnt, GFP_KERNEL);
136 TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
137 if (ifma->ifma_addr->sa_family != AF_LINK)
139 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
142 /* Make sure the list didn't grow. */
144 if_maddr_runlock(dev);
148 mcaddr[i++] = mlx4_en_mac_to_u64(
149 LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
151 if_maddr_runlock(dev);
157 static void mlx4_en_set_multicast(struct net_device *dev)
159 struct mlx4_en_priv *priv = netdev_priv(dev);
164 queue_work(priv->mdev->workqueue, &priv->mcast_task);
167 static void mlx4_en_do_set_multicast(struct work_struct *work)
169 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
171 struct net_device *dev = priv->dev;
172 struct mlx4_en_dev *mdev = priv->mdev;
175 mutex_lock(&mdev->state_lock);
176 if (!mdev->device_up) {
177 en_dbg(HW, priv, "Card is not up, "
178 "ignoring multicast change.\n");
181 if (!priv->port_up) {
182 en_dbg(HW, priv, "Port is down, "
183 "ignoring multicast change.\n");
188 * Promsicuous mode: disable all filters
191 if (dev->if_flags & IFF_PROMISC) {
192 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
193 priv->flags |= MLX4_EN_FLAG_PROMISC;
195 /* Enable promiscouos mode */
196 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
199 en_err(priv, "Failed enabling "
200 "promiscous mode\n");
202 /* Disable port multicast filter (unconditionally) */
203 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
204 0, MLX4_MCAST_DISABLE);
206 en_err(priv, "Failed disabling "
207 "multicast filter\n");
209 /* Disable port VLAN filter */
210 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, NULL);
212 en_err(priv, "Failed disabling VLAN filter\n");
218 * Not in promiscous mode
221 if (priv->flags & MLX4_EN_FLAG_PROMISC) {
222 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
224 /* Disable promiscouos mode */
225 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
228 en_err(priv, "Failed disabling promiscous mode\n");
230 /* Enable port VLAN filter */
231 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlans);
233 en_err(priv, "Failed enabling VLAN filter\n");
236 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
237 if (dev->if_flags & IFF_ALLMULTI) {
238 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
239 0, MLX4_MCAST_DISABLE);
241 en_err(priv, "Failed disabling multicast filter\n");
247 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
248 0, MLX4_MCAST_DISABLE);
250 en_err(priv, "Failed disabling multicast filter\n");
252 /* Flush mcast filter and init it with broadcast address */
253 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
254 1, MLX4_MCAST_CONFIG);
256 /* Update multicast list - we cache all addresses so they won't
257 * change while HW is updated holding the command semaphor */
258 mccount = mlx4_en_cache_mclist(dev, &mcaddr);
259 for (i = 0; i < mccount; i++)
260 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
261 mcaddr[i], 0, MLX4_MCAST_CONFIG);
262 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
263 0, MLX4_MCAST_ENABLE);
265 en_err(priv, "Failed enabling multicast filter\n");
270 mutex_unlock(&mdev->state_lock);
273 #ifdef CONFIG_NET_POLL_CONTROLLER
274 static void mlx4_en_netpoll(struct net_device *dev)
276 struct mlx4_en_priv *priv = netdev_priv(dev);
277 struct mlx4_en_cq *cq;
281 for (i = 0; i < priv->rx_ring_num; i++) {
282 cq = &priv->rx_cq[i];
283 spin_lock_irqsave(&cq->lock, flags);
284 napi_synchronize(&cq->napi);
285 mlx4_en_process_rx_cq(dev, cq, 0);
286 spin_unlock_irqrestore(&cq->lock, flags);
291 static void mlx4_en_watchdog_timeout(void *arg)
293 struct mlx4_en_priv *priv = arg;
294 struct mlx4_en_dev *mdev = priv->mdev;
296 en_dbg(DRV, priv, "Scheduling watchdog\n");
297 queue_work(mdev->workqueue, &priv->watchdog_task);
299 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
300 mlx4_en_watchdog_timeout, priv);
304 /* XXX This clears user settings in too many cases. */
305 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
307 struct mlx4_en_cq *cq;
310 /* If we haven't received a specific coalescing setting
311 * (module param), we set the moderation paramters as follows:
312 * - moder_cnt is set to the number of mtu sized packets to
313 * satisfy our coelsing target.
314 * - moder_time is set to a fixed value.
316 priv->rx_frames = MLX4_EN_RX_COAL_TARGET / priv->dev->if_mtu + 1;
317 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
318 en_dbg(INTR, priv, "Default coalesing params for mtu:%ld - "
319 "rx_frames:%d rx_usecs:%d\n",
320 priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
322 /* Setup cq moderation params */
323 for (i = 0; i < priv->rx_ring_num; i++) {
324 cq = &priv->rx_cq[i];
325 cq->moder_cnt = priv->rx_frames;
326 cq->moder_time = priv->rx_usecs;
327 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
328 priv->last_moder_packets[i] = 0;
329 priv->last_moder_bytes[i] = 0;
332 for (i = 0; i < priv->tx_ring_num; i++) {
333 cq = &priv->tx_cq[i];
334 cq->moder_cnt = MLX4_EN_TX_COAL_PKTS;
335 cq->moder_time = MLX4_EN_TX_COAL_TIME;
338 /* Reset auto-moderation params */
339 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
340 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
341 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
342 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
343 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
344 priv->adaptive_rx_coal = 1;
345 priv->last_moder_jiffies = 0;
346 priv->last_moder_tx_packets = 0;
349 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
351 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
352 struct mlx4_en_cq *cq;
353 unsigned long packets;
355 unsigned long avg_pkt_size;
356 unsigned long rx_packets;
357 unsigned long rx_bytes;
358 unsigned long rx_pkt_diff;
362 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
364 for (ring = 0; ring < priv->rx_ring_num; ring++) {
365 spin_lock(&priv->stats_lock);
366 rx_packets = priv->rx_ring[ring].packets;
367 rx_bytes = priv->rx_ring[ring].bytes;
368 spin_unlock(&priv->stats_lock);
370 rx_pkt_diff = ((unsigned long) (rx_packets -
371 priv->last_moder_packets[ring]));
372 packets = rx_pkt_diff;
373 rate = packets * HZ / period;
374 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
375 priv->last_moder_bytes[ring])) / packets : 0;
377 /* Apply auto-moderation only when packet rate
378 * exceeds a rate that it matters */
379 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
380 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
381 if (rate < priv->pkt_rate_low ||
382 avg_pkt_size < MLX4_EN_AVG_PKT_SMALL)
383 moder_time = priv->rx_usecs_low;
384 else if (rate > priv->pkt_rate_high)
385 moder_time = priv->rx_usecs_high;
387 moder_time = (rate - priv->pkt_rate_low) *
388 (priv->rx_usecs_high - priv->rx_usecs_low) /
389 (priv->pkt_rate_high - priv->pkt_rate_low) +
392 moder_time = priv->rx_usecs_low;
395 if (moder_time != priv->last_moder_time[ring]) {
396 priv->last_moder_time[ring] = moder_time;
397 cq = &priv->rx_cq[ring];
398 cq->moder_time = moder_time;
399 err = mlx4_en_set_cq_moder(priv, cq);
401 en_err(priv, "Failed modifying moderation "
402 "for cq:%d\n", ring);
404 priv->last_moder_packets[ring] = rx_packets;
405 priv->last_moder_bytes[ring] = rx_bytes;
408 priv->last_moder_jiffies = jiffies;
411 static void mlx4_en_handle_vlans(struct mlx4_en_priv *priv)
413 u8 vlan_register[VLAN_FLTR_SIZE];
414 u8 vlan_unregister[VLAN_FLTR_SIZE];
418 /* cache the vlan data for processing
419 * done under lock to avoid changes during work */
420 spin_lock(&priv->vlan_lock);
421 for (i = 0; i < VLAN_FLTR_SIZE; i++) {
422 vlan_register[i] = priv->vlan_register[i];
423 priv->vlan_register[i] = 0;
424 vlan_unregister[i] = priv->vlan_unregister[i];
425 priv->vlan_unregister[i] = 0;
427 priv->vlgrp_modified = false;
428 spin_unlock(&priv->vlan_lock);
430 /* Configure the vlan filter
431 * The vlgrp is updated with all the vids that need to be allowed */
432 if (mlx4_SET_VLAN_FLTR(priv->mdev->dev, priv->port, priv->vlans))
433 en_err(priv, "Failed configuring VLAN filter\n");
435 /* Configure the VLAN table */
436 for (i = 0; i < VLAN_FLTR_SIZE; i++) {
437 for (j = 0; j < 32; j++) {
439 if (vlan_register[i] & (1 << j))
440 if (mlx4_register_vlan(priv->mdev->dev, priv->port, vid, &idx))
441 en_dbg(HW, priv, "failed registering vlan %d\n", vid);
442 if (vlan_unregister[i] & (1 << j)) {
443 if (!mlx4_find_cached_vlan(priv->mdev->dev, priv->port, vid, &idx))
444 mlx4_unregister_vlan(priv->mdev->dev, priv->port, idx);
446 en_dbg(HW, priv, "could not find vid %d in cache\n", vid);
452 static void mlx4_en_do_get_stats(struct work_struct *work)
454 struct delayed_work *delay = to_delayed_work(work);
455 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
457 struct mlx4_en_dev *mdev = priv->mdev;
460 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
462 en_dbg(HW, priv, "Could not update stats \n");
465 mutex_lock(&mdev->state_lock);
466 if (mdev->device_up) {
468 if (priv->vlgrp_modified)
469 mlx4_en_handle_vlans(priv);
471 mlx4_en_auto_moderation(priv);
474 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
476 mutex_unlock(&mdev->state_lock);
479 static void mlx4_en_linkstate(struct work_struct *work)
481 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
483 struct mlx4_en_dev *mdev = priv->mdev;
484 int linkstate = priv->link_state;
486 mutex_lock(&mdev->state_lock);
487 /* If observable port state changed set carrier state and
488 * report to system log */
489 if (priv->last_link_state != linkstate) {
490 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
491 if_link_state_change(priv->dev, LINK_STATE_DOWN);
493 en_info(priv, "Link Up\n");
494 if_link_state_change(priv->dev, LINK_STATE_UP);
497 priv->last_link_state = linkstate;
498 mutex_unlock(&mdev->state_lock);
502 int mlx4_en_start_port(struct net_device *dev)
504 struct mlx4_en_priv *priv = netdev_priv(dev);
505 struct mlx4_en_dev *mdev = priv->mdev;
506 struct mlx4_en_cq *cq;
507 struct mlx4_en_tx_ring *tx_ring;
516 en_dbg(DRV, priv, "start port called while port already up\n");
520 /* Calculate Rx buf size */
521 dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
522 mlx4_en_calc_rx_buf(dev);
523 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
525 /* Configure rx cq's and rings */
526 err = mlx4_en_activate_rx_rings(priv);
528 en_err(priv, "Failed to activate RX rings\n");
532 for (i = 0; i < priv->rx_ring_num; i++) {
533 cq = &priv->rx_cq[i];
535 err = mlx4_en_activate_cq(priv, cq);
537 en_err(priv, "Failed activating Rx CQ\n");
540 for (j = 0; j < cq->size; j++)
541 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
542 err = mlx4_en_set_cq_moder(priv, cq);
544 en_err(priv, "Failed setting cq moderation parameters");
545 mlx4_en_deactivate_cq(priv, cq);
548 mlx4_en_arm_cq(priv, cq);
549 priv->rx_ring[i].cqn = cq->mcq.cqn;
553 err = mlx4_en_config_rss_steer(priv);
555 en_err(priv, "Failed configuring rss steering\n");
559 /* Configure tx cq's and rings */
560 for (i = 0; i < priv->tx_ring_num; i++) {
562 cq = &priv->tx_cq[i];
563 err = mlx4_en_activate_cq(priv, cq);
565 en_err(priv, "Failed allocating Tx CQ\n");
568 err = mlx4_en_set_cq_moder(priv, cq);
570 en_err(priv, "Failed setting cq moderation parameters");
571 mlx4_en_deactivate_cq(priv, cq);
574 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
575 cq->buf->wqe_index = cpu_to_be16(0xffff);
578 tx_ring = &priv->tx_ring[i];
579 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn);
581 en_err(priv, "Failed allocating Tx ring\n");
582 mlx4_en_deactivate_cq(priv, cq);
585 /* Set initial ownership of all Tx TXBBs to SW (1) */
586 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
587 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
592 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
593 priv->rx_mb_size + ETHER_CRC_LEN,
594 priv->prof->tx_pause,
596 priv->prof->rx_pause,
599 en_err(priv, "Failed setting port general configurations "
600 "for port %d, with error %d\n", priv->port, err);
603 /* Set default qp number */
604 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
606 en_err(priv, "Failed setting default qp numbers\n");
609 /* Set port mac number */
610 en_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
611 err = mlx4_register_mac(mdev->dev, priv->port,
612 mlx4_en_mac_to_u64(IF_LLADDR(dev)));
614 en_err(priv, "Failed setting port mac err=%d\n", err);
617 mdev->mac_removed[priv->port] = 0;
620 en_dbg(HW, priv, "Initializing port\n");
621 err = mlx4_INIT_PORT(mdev->dev, priv->port);
623 en_err(priv, "Failed Initializing port\n");
627 /* Set the various hardware offload abilities */
628 dev->if_hwassist = 0;
629 if (dev->if_capenable & IFCAP_TSO4)
630 dev->if_hwassist |= CSUM_TSO;
631 if (dev->if_capenable & IFCAP_TXCSUM)
632 dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
633 if (dev->if_capenable & IFCAP_RXCSUM)
638 err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
640 en_err(priv, "Failed to get WoL info, unable to modify\n");
643 if (dev->if_capenable & IFCAP_WOL_MAGIC) {
644 config |= MLX4_EN_WOL_DO_MODIFY | MLX4_EN_WOL_ENABLED |
647 config &= ~(MLX4_EN_WOL_ENABLED | MLX4_EN_WOL_MAGIC);
648 config |= MLX4_EN_WOL_DO_MODIFY;
651 err = mlx4_wol_write(priv->mdev->dev, config, priv->port);
653 en_err(priv, "Failed to set WoL information\n");
657 priv->port_up = true;
659 /* Populate multicast list */
660 mlx4_en_set_multicast(dev);
662 /* Enable the queues. */
663 dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
664 dev->if_drv_flags |= IFF_DRV_RUNNING;
666 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
667 mlx4_en_watchdog_timeout, priv);
673 mlx4_CLOSE_PORT(mdev->dev, priv->port);
676 mlx4_unregister_mac(mdev->dev, priv->port, priv->mac);
679 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
680 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
683 mlx4_en_release_rss_steer(priv);
686 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
687 for (i = 0; i < priv->rx_ring_num; i++)
688 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
690 return err; /* need to close devices */
694 void mlx4_en_stop_port(struct net_device *dev)
696 struct mlx4_en_priv *priv = netdev_priv(dev);
697 struct mlx4_en_dev *mdev = priv->mdev;
700 if (!priv->port_up) {
701 en_dbg(DRV, priv, "stop port called while port already down\n");
705 /* Set port as not active */
706 priv->port_up = false;
708 /* Unregister Mac address for the port */
709 mlx4_unregister_mac(mdev->dev, priv->port, priv->mac);
710 mdev->mac_removed[priv->port] = 1;
713 for (i = 0; i < priv->tx_ring_num; i++) {
714 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
715 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
719 for (i = 0; i < priv->tx_ring_num; i++)
720 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
723 mlx4_en_release_rss_steer(priv);
726 for (i = 0; i < priv->rx_ring_num; i++) {
727 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
728 mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
732 mlx4_CLOSE_PORT(mdev->dev, priv->port);
734 callout_stop(&priv->watchdog_timer);
736 dev->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
739 static void mlx4_en_restart(struct work_struct *work)
741 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
743 struct mlx4_en_dev *mdev = priv->mdev;
744 struct net_device *dev = priv->dev;
745 struct mlx4_en_tx_ring *ring;
748 if (priv->blocked == 0 || priv->port_up == 0)
750 for (i = 0; i < priv->tx_ring_num; i++) {
751 ring = &priv->tx_ring[i];
753 ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks)
759 priv->port_stats.tx_timeout++;
760 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
762 mutex_lock(&mdev->state_lock);
764 mlx4_en_stop_port(dev);
765 if (mlx4_en_start_port(dev))
766 en_err(priv, "Failed restarting port %d\n", priv->port);
768 mutex_unlock(&mdev->state_lock);
773 mlx4_en_init(void *arg)
775 struct mlx4_en_priv *priv;
776 struct mlx4_en_dev *mdev;
780 mutex_lock(&mdev->state_lock);
781 mlx4_en_init_locked(priv);
782 mutex_unlock(&mdev->state_lock);
786 mlx4_en_init_locked(struct mlx4_en_priv *priv)
789 struct mlx4_en_dev *mdev;
795 if (dev->if_drv_flags & IFF_DRV_RUNNING)
796 mlx4_en_stop_port(dev);
798 if (!mdev->device_up) {
799 en_err(priv, "Cannot open - device down/disabled\n");
803 /* Reset HW statistics and performance counters */
804 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
805 en_dbg(HW, priv, "Failed dumping statistics\n");
807 memset(&priv->pstats, 0, sizeof(priv->pstats));
809 for (i = 0; i < priv->tx_ring_num; i++) {
810 priv->tx_ring[i].bytes = 0;
811 priv->tx_ring[i].packets = 0;
813 for (i = 0; i < priv->rx_ring_num; i++) {
814 priv->rx_ring[i].bytes = 0;
815 priv->rx_ring[i].packets = 0;
818 mlx4_en_set_default_moderation(priv);
819 if (mlx4_en_start_port(dev))
820 en_err(priv, "Failed starting port:%d\n", priv->port);
823 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
827 for (i = 0; i < priv->tx_ring_num; i++) {
828 if (priv->tx_ring[i].tx_info)
829 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
830 if (priv->tx_cq[i].buf)
831 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
834 for (i = 0; i < priv->rx_ring_num; i++) {
835 if (priv->rx_ring[i].rx_info)
836 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
837 if (priv->rx_cq[i].buf)
838 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
840 /* Free the stats tree when we resize the rings. */
842 sysctl_ctx_free(&priv->stat_ctx);
846 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
848 struct mlx4_en_port_profile *prof = priv->prof;
851 /* Create tx Rings */
852 for (i = 0; i < priv->tx_ring_num; i++) {
853 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
854 prof->tx_ring_size, i, TX))
857 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
858 prof->tx_ring_size, TXBB_SIZE))
862 /* Create rx Rings */
863 for (i = 0; i < priv->rx_ring_num; i++) {
864 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
865 prof->rx_ring_size, i, RX))
868 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
873 /* Re-create stat sysctls in case the number of rings changed. */
874 mlx4_en_sysctl_stat(priv);
876 /* Populate Tx priority mappings */
877 mlx4_en_set_prio_map(priv, priv->tx_prio_map,
878 priv->tx_ring_num - MLX4_EN_NUM_HASH_RINGS);
883 en_err(priv, "Failed to allocate NIC resources\n");
888 void mlx4_en_destroy_netdev(struct net_device *dev)
890 struct mlx4_en_priv *priv = netdev_priv(dev);
891 struct mlx4_en_dev *mdev = priv->mdev;
893 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
895 if (priv->vlan_attach != NULL)
896 EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
897 if (priv->vlan_detach != NULL)
898 EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
900 /* Unregister device - this will close the port if it was up */
901 if (priv->registered)
905 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
907 mutex_lock(&mdev->state_lock);
908 mlx4_en_stop_port(dev);
909 mutex_unlock(&mdev->state_lock);
911 cancel_delayed_work(&priv->stats_task);
912 /* flush any pending task for this netdev */
913 flush_workqueue(mdev->workqueue);
914 callout_drain(&priv->watchdog_timer);
916 /* Detach the netdev so tasks would not attempt to access it */
917 mutex_lock(&mdev->state_lock);
918 mdev->pndev[priv->port] = NULL;
919 mutex_unlock(&mdev->state_lock);
921 mlx4_en_free_resources(priv);
924 sysctl_ctx_free(&priv->conf_ctx);
926 mtx_destroy(&priv->stats_lock.m);
927 mtx_destroy(&priv->vlan_lock.m);
928 mtx_destroy(&priv->ioctl_lock.m);
933 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
935 struct mlx4_en_priv *priv = netdev_priv(dev);
936 struct mlx4_en_dev *mdev = priv->mdev;
939 en_dbg(DRV, priv, "Change MTU called - current:%ld new:%d\n",
940 dev->if_mtu, new_mtu);
942 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
943 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
946 mutex_lock(&mdev->state_lock);
947 dev->if_mtu = new_mtu;
948 if (dev->if_drv_flags & IFF_DRV_RUNNING) {
949 if (!mdev->device_up) {
950 /* NIC is probably restarting - let watchdog task reset
952 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
954 mlx4_en_stop_port(dev);
955 mlx4_en_set_default_moderation(priv);
956 err = mlx4_en_start_port(dev);
958 en_err(priv, "Failed restarting port:%d\n",
960 queue_work(mdev->workqueue, &priv->watchdog_task);
964 mutex_unlock(&mdev->state_lock);
968 static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
974 if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
976 if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
979 trans_type = priv->port_state.transciver;
980 /* XXX I don't know all of the transceiver values. */
981 switch (priv->port_state.link_speed) {
983 active |= IFM_1000_T;
986 if (trans_type > 0 && trans_type <= 0xC)
987 active |= IFM_10G_SR;
988 else if (trans_type == 0x80 || trans_type == 0)
989 active |= IFM_10G_CX4;
992 active |= IFM_40G_CR4;
995 if (priv->prof->tx_pause)
996 active |= IFM_ETH_TXPAUSE;
997 if (priv->prof->rx_pause)
998 active |= IFM_ETH_RXPAUSE;
1004 static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
1006 struct mlx4_en_priv *priv;
1008 priv = dev->if_softc;
1009 ifmr->ifm_status = IFM_AVALID;
1010 if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
1011 ifmr->ifm_status |= IFM_ACTIVE;
1012 ifmr->ifm_active = mlx4_en_calc_media(priv);
1017 static int mlx4_en_media_change(struct ifnet *dev)
1019 struct mlx4_en_priv *priv;
1020 struct ifmedia *ifm;
1025 priv = dev->if_softc;
1027 rxpause = txpause = 0;
1030 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1032 switch (IFM_SUBTYPE(ifm->ifm_media)) {
1038 if (IFM_SUBTYPE(ifm->ifm_media) ==
1039 IFM_SUBTYPE(mlx4_en_calc_media(priv)) &&
1040 (ifm->ifm_media & IFM_FDX))
1044 printf("%s: Only auto media type\n", if_name(dev));
1047 /* Allow user to set/clear pause */
1048 if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
1050 if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
1052 if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
1053 priv->prof->tx_pause = txpause;
1054 priv->prof->rx_pause = rxpause;
1055 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1056 priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
1057 priv->prof->tx_ppp, priv->prof->rx_pause,
1058 priv->prof->rx_ppp);
1063 static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
1065 struct mlx4_en_priv *priv;
1066 struct mlx4_en_dev *mdev;
1073 priv = dev->if_softc;
1075 ifr = (struct ifreq *) data;
1078 error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
1081 mutex_lock(&mdev->state_lock);
1082 if (dev->if_flags & IFF_UP) {
1083 if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0)
1084 mlx4_en_start_port(dev);
1086 mlx4_en_set_multicast(dev);
1088 if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1089 mlx4_en_stop_port(dev);
1090 if_link_state_change(dev, LINK_STATE_DOWN);
1093 mutex_unlock(&mdev->state_lock);
1097 spin_lock(&priv->ioctl_lock);
1098 mlx4_en_set_multicast(dev);
1099 spin_unlock(&priv->ioctl_lock);
1103 error = ifmedia_ioctl(dev, ifr, &priv->media, command);
1106 mutex_lock(&mdev->state_lock);
1107 mask = ifr->ifr_reqcap ^ dev->if_capenable;
1108 if (mask & IFCAP_HWCSUM)
1109 dev->if_capenable ^= IFCAP_HWCSUM;
1110 if (mask & IFCAP_TSO4)
1111 dev->if_capenable ^= IFCAP_TSO4;
1112 if (mask & IFCAP_LRO)
1113 dev->if_capenable ^= IFCAP_LRO;
1114 if (mask & IFCAP_VLAN_HWTAGGING)
1115 dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1116 if (mask & IFCAP_VLAN_HWFILTER)
1117 dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
1118 if (mask & IFCAP_WOL_MAGIC)
1119 dev->if_capenable ^= IFCAP_WOL_MAGIC;
1120 if (dev->if_drv_flags & IFF_DRV_RUNNING)
1121 mlx4_en_init_locked(priv);
1122 mutex_unlock(&mdev->state_lock);
1123 VLAN_CAPABILITIES(dev);
1126 error = ether_ioctl(dev, command, data);
1133 static int mlx4_en_set_ring_size(struct net_device *dev,
1134 int rx_size, int tx_size)
1136 struct mlx4_en_priv *priv = netdev_priv(dev);
1137 struct mlx4_en_dev *mdev = priv->mdev;
1141 rx_size = roundup_pow_of_two(rx_size);
1142 rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
1143 rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
1144 tx_size = roundup_pow_of_two(tx_size);
1145 tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
1146 tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
1148 if (rx_size == (priv->port_up ?
1149 priv->rx_ring[0].actual_size : priv->rx_ring[0].size) &&
1150 tx_size == priv->tx_ring[0].size)
1153 mutex_lock(&mdev->state_lock);
1154 if (priv->port_up) {
1156 mlx4_en_stop_port(dev);
1158 mlx4_en_free_resources(priv);
1159 priv->prof->tx_ring_size = tx_size;
1160 priv->prof->rx_ring_size = rx_size;
1161 err = mlx4_en_alloc_resources(priv);
1163 en_err(priv, "Failed reallocating port resources\n");
1167 err = mlx4_en_start_port(dev);
1169 en_err(priv, "Failed starting port\n");
1172 mutex_unlock(&mdev->state_lock);
1176 static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
1178 struct mlx4_en_priv *priv;
1183 size = priv->prof->rx_ring_size;
1184 error = sysctl_handle_int(oidp, &size, 0, req);
1185 if (error || !req->newptr)
1187 error = -mlx4_en_set_ring_size(priv->dev, size,
1188 priv->prof->tx_ring_size);
1193 static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
1195 struct mlx4_en_priv *priv;
1200 size = priv->prof->tx_ring_size;
1201 error = sysctl_handle_int(oidp, &size, 0, req);
1202 if (error || !req->newptr)
1204 error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
1210 static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
1212 struct mlx4_en_priv *priv;
1217 ppp = priv->prof->tx_ppp;
1218 error = sysctl_handle_int(oidp, &ppp, 0, req);
1219 if (error || !req->newptr)
1221 if (ppp > 0xff || ppp < 0)
1223 priv->prof->tx_ppp = ppp;
1224 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1225 priv->rx_mb_size + ETHER_CRC_LEN,
1226 priv->prof->tx_pause,
1228 priv->prof->rx_pause,
1229 priv->prof->rx_ppp);
1234 static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
1236 struct mlx4_en_priv *priv;
1237 struct mlx4_en_dev *mdev;
1246 ppp = priv->prof->rx_ppp;
1247 error = sysctl_handle_int(oidp, &ppp, 0, req);
1248 if (error || !req->newptr)
1250 if (ppp > 0xff || ppp < 0)
1252 /* See if we have to change the number of tx queues. */
1253 if (!ppp != !priv->prof->rx_ppp) {
1254 tx_ring_num = MLX4_EN_NUM_HASH_RINGS + 1 +
1255 (!!ppp) * MLX4_EN_NUM_PPP_RINGS;
1256 mutex_lock(&mdev->state_lock);
1257 if (priv->port_up) {
1259 mlx4_en_stop_port(priv->dev);
1261 mlx4_en_free_resources(priv);
1262 priv->tx_ring_num = tx_ring_num;
1263 priv->prof->rx_ppp = ppp;
1264 error = -mlx4_en_alloc_resources(priv);
1266 en_err(priv, "Failed reallocating port resources\n");
1267 if (error == 0 && port_up) {
1268 error = -mlx4_en_start_port(priv->dev);
1270 en_err(priv, "Failed starting port\n");
1272 mutex_unlock(&mdev->state_lock);
1276 priv->prof->rx_ppp = ppp;
1277 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1278 priv->rx_mb_size + ETHER_CRC_LEN,
1279 priv->prof->tx_pause,
1281 priv->prof->rx_pause,
1282 priv->prof->rx_ppp);
1287 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
1289 struct net_device *dev;
1290 struct sysctl_ctx_list *ctx;
1291 struct sysctl_oid *node;
1292 struct sysctl_oid_list *node_list;
1293 struct sysctl_oid *coal;
1294 struct sysctl_oid_list *coal_list;
1297 ctx = &priv->conf_ctx;
1299 sysctl_ctx_init(ctx);
1300 priv->sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
1301 OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
1302 node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
1303 "conf", CTLFLAG_RD, NULL, "Configuration");
1304 node_list = SYSCTL_CHILDREN(node);
1306 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
1307 CTLFLAG_RW, &priv->msg_enable, 0,
1308 "Driver message enable bitfield");
1309 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
1310 CTLTYPE_INT | CTLFLAG_RD, &priv->rx_ring_num, 0,
1311 "Number of receive rings");
1312 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
1313 CTLTYPE_INT | CTLFLAG_RD, &priv->tx_ring_num, 0,
1314 "Number of transmit rings");
1315 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
1316 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1317 mlx4_en_set_rx_ring_size, "I", "Receive ring size");
1318 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
1319 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1320 mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
1321 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "ip_reasm",
1322 CTLFLAG_RW, &priv->ip_reasm, 0,
1323 "Allow reassembly of IP fragments.");
1324 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
1325 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1326 mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
1327 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
1328 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1329 mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
1331 /* Add coalescer configuration. */
1332 coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
1333 "coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
1334 coal_list = SYSCTL_CHILDREN(node);
1335 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
1336 CTLFLAG_RW, &priv->pkt_rate_low, 0,
1337 "Packets per-second for minimum delay");
1338 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
1339 CTLFLAG_RW, &priv->rx_usecs_low, 0,
1340 "Minimum RX delay in micro-seconds");
1341 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
1342 CTLFLAG_RW, &priv->pkt_rate_high, 0,
1343 "Packets per-second for maximum delay");
1344 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
1345 CTLFLAG_RW, &priv->rx_usecs_high, 0,
1346 "Maximum RX delay in micro-seconds");
1347 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
1348 CTLFLAG_RW, &priv->sample_interval, 0,
1349 "adaptive frequency in units of HZ ticks");
1350 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
1351 CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
1352 "Enable adaptive rx coalescing");
1355 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
1357 struct net_device *dev;
1358 struct sysctl_ctx_list *ctx;
1359 struct sysctl_oid *node;
1360 struct sysctl_oid_list *node_list;
1361 struct sysctl_oid *ring_node;
1362 struct sysctl_oid_list *ring_list;
1363 struct mlx4_en_tx_ring *tx_ring;
1364 struct mlx4_en_rx_ring *rx_ring;
1370 ctx = &priv->stat_ctx;
1371 sysctl_ctx_init(ctx);
1372 node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
1373 "stat", CTLFLAG_RD, NULL, "Statistics");
1374 node_list = SYSCTL_CHILDREN(node);
1376 #ifdef MLX4_EN_PERF_STAT
1377 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
1378 &priv->pstats.tx_poll, "TX Poll calls");
1379 SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
1380 &priv->pstats.tx_pktsz_avg, "TX average packet size");
1381 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
1382 &priv->pstats.inflight_avg, "TX average packets in-flight");
1383 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
1384 &priv->pstats.tx_coal_avg, "TX average coalesced completions");
1385 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
1386 &priv->pstats.rx_coal_avg, "RX average coalesced completions");
1389 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
1390 &priv->port_stats.tso_packets, "TSO packets sent");
1391 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
1392 &priv->port_stats.queue_stopped, "Queue full");
1393 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
1394 &priv->port_stats.wake_queue, "Queue resumed after full");
1395 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
1396 &priv->port_stats.tx_timeout, "Transmit timeouts");
1397 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
1398 &priv->port_stats.rx_alloc_failed, "RX failed to allocate mbuf");
1399 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
1400 &priv->port_stats.rx_chksum_good, "RX checksum offload success");
1401 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
1402 &priv->port_stats.rx_chksum_none, "RX without checksum offload");
1403 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_chksum_offload",
1404 CTLFLAG_RD, &priv->port_stats.tx_chksum_offload,
1405 "TX checksum offloads");
1407 /* Could strdup the names and add in a loop. This is simpler. */
1408 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "broadcast", CTLFLAG_RD,
1409 &priv->pkstats.broadcast, "Broadcast packets");
1410 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio0", CTLFLAG_RD,
1411 &priv->pkstats.tx_prio[0], "TX Priority 0 packets");
1412 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio1", CTLFLAG_RD,
1413 &priv->pkstats.tx_prio[1], "TX Priority 1 packets");
1414 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio2", CTLFLAG_RD,
1415 &priv->pkstats.tx_prio[2], "TX Priority 2 packets");
1416 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio3", CTLFLAG_RD,
1417 &priv->pkstats.tx_prio[3], "TX Priority 3 packets");
1418 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio4", CTLFLAG_RD,
1419 &priv->pkstats.tx_prio[4], "TX Priority 4 packets");
1420 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio5", CTLFLAG_RD,
1421 &priv->pkstats.tx_prio[5], "TX Priority 5 packets");
1422 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio6", CTLFLAG_RD,
1423 &priv->pkstats.tx_prio[6], "TX Priority 6 packets");
1424 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio7", CTLFLAG_RD,
1425 &priv->pkstats.tx_prio[7], "TX Priority 7 packets");
1426 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio0", CTLFLAG_RD,
1427 &priv->pkstats.rx_prio[0], "RX Priority 0 packets");
1428 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio1", CTLFLAG_RD,
1429 &priv->pkstats.rx_prio[1], "RX Priority 1 packets");
1430 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio2", CTLFLAG_RD,
1431 &priv->pkstats.rx_prio[2], "RX Priority 2 packets");
1432 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio3", CTLFLAG_RD,
1433 &priv->pkstats.rx_prio[3], "RX Priority 3 packets");
1434 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio4", CTLFLAG_RD,
1435 &priv->pkstats.rx_prio[4], "RX Priority 4 packets");
1436 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio5", CTLFLAG_RD,
1437 &priv->pkstats.rx_prio[5], "RX Priority 5 packets");
1438 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio6", CTLFLAG_RD,
1439 &priv->pkstats.rx_prio[6], "RX Priority 6 packets");
1440 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio7", CTLFLAG_RD,
1441 &priv->pkstats.rx_prio[7], "RX Priority 7 packets");
1443 for (i = 0; i < priv->tx_ring_num; i++) {
1444 tx_ring = &priv->tx_ring[i];
1445 snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
1446 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
1447 CTLFLAG_RD, NULL, "TX Ring");
1448 ring_list = SYSCTL_CHILDREN(ring_node);
1449 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
1450 CTLFLAG_RD, &tx_ring->packets, "TX packets");
1451 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
1452 CTLFLAG_RD, &tx_ring->bytes, "TX bytes");
1453 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
1454 CTLFLAG_RD, &tx_ring->errors, "TX soft errors");
1457 for (i = 0; i < priv->rx_ring_num; i++) {
1458 rx_ring = &priv->rx_ring[i];
1459 snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
1460 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
1461 CTLFLAG_RD, NULL, "RX Ring");
1462 ring_list = SYSCTL_CHILDREN(ring_node);
1463 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
1464 CTLFLAG_RD, &rx_ring->packets, "RX packets");
1465 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
1466 CTLFLAG_RD, &rx_ring->bytes, "RX bytes");
1467 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
1468 CTLFLAG_RD, &rx_ring->errors, "RX soft errors");
1469 SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_queued",
1470 CTLFLAG_RD, &rx_ring->lro.lro_queued, 0, "LRO Queued");
1471 SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_flushed",
1472 CTLFLAG_RD, &rx_ring->lro.lro_flushed, 0, "LRO Flushed");
1476 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
1477 struct mlx4_en_port_profile *prof)
1479 static volatile int mlx4_en_unit;
1480 struct net_device *dev;
1481 struct mlx4_en_priv *priv;
1482 uint8_t dev_addr[ETHER_ADDR_LEN];
1486 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1487 dev = priv->dev = if_alloc(IFT_ETHER);
1489 mlx4_err(mdev, "Net device allocation failed\n");
1493 dev->if_softc = priv;
1494 if_initname(dev, "mlxen", atomic_fetchadd_int(&mlx4_en_unit, 1));
1495 dev->if_mtu = ETHERMTU;
1496 dev->if_baudrate = 1000000000;
1497 dev->if_init = mlx4_en_init;
1498 dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1499 dev->if_ioctl = mlx4_en_ioctl;
1500 dev->if_transmit = mlx4_en_transmit;
1501 dev->if_qflush = mlx4_en_qflush;
1502 dev->if_snd.ifq_maxlen = prof->tx_ring_size;
1505 * Initialize driver private data
1511 priv->port_up = false;
1513 priv->flags = prof->flags;
1514 priv->tx_ring_num = prof->tx_ring_num;
1515 priv->rx_ring_num = prof->rx_ring_num;
1516 priv->mac_index = -1;
1517 priv->msg_enable = MLX4_EN_MSG_LEVEL;
1518 priv->ip_reasm = priv->mdev->profile.ip_reasm;
1519 mtx_init(&priv->stats_lock.m, "mlx4 stats", NULL, MTX_DEF);
1520 mtx_init(&priv->ioctl_lock.m, "mlx4 ioctl", NULL, MTX_DEF);
1521 mtx_init(&priv->vlan_lock.m, "mlx4 vlan", NULL, MTX_DEF);
1522 INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
1523 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
1524 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
1525 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
1526 callout_init(&priv->watchdog_timer, 1);
1528 /* Query for default mac and max mtu */
1529 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
1530 priv->mac = mdev->dev->caps.def_mac[priv->port];
1532 if (ILLEGAL_MAC(priv->mac)) {
1533 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
1534 priv->port, priv->mac);
1539 mlx4_en_sysctl_conf(priv);
1541 err = mlx4_en_alloc_resources(priv);
1545 /* Allocate page for receive rings */
1546 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
1547 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
1549 en_err(priv, "Failed to allocate page for rx qps\n");
1552 priv->allocated = 1;
1555 * Set driver features
1557 dev->if_capabilities |= IFCAP_RXCSUM | IFCAP_TXCSUM;
1558 dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
1559 dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
1560 dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
1561 if (mdev->LSO_support)
1562 dev->if_capabilities |= IFCAP_TSO4 | IFCAP_VLAN_HWTSO;
1563 if (mdev->profile.num_lro)
1564 dev->if_capabilities |= IFCAP_LRO;
1565 dev->if_capenable = dev->if_capabilities;
1567 * Setup wake-on-lan.
1570 if (priv->mdev->dev->caps.wol) {
1572 if (mlx4_wol_read(priv->mdev->dev, &config, priv->port) == 0) {
1573 if (config & MLX4_EN_WOL_MAGIC)
1574 dev->if_capabilities |= IFCAP_WOL_MAGIC;
1575 if (config & MLX4_EN_WOL_ENABLED)
1576 dev->if_capenable |= IFCAP_WOL_MAGIC;
1581 /* Register for VLAN events */
1582 priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
1583 mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
1584 priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
1585 mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
1587 mdev->pndev[priv->port] = dev;
1589 priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
1590 if_link_state_change(dev, LINK_STATE_DOWN);
1592 /* Set default MAC */
1593 for (i = 0; i < ETHER_ADDR_LEN; i++)
1594 dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
1596 ether_ifattach(dev, dev_addr);
1597 ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
1598 mlx4_en_media_change, mlx4_en_media_status);
1599 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
1600 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
1601 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
1602 ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1603 ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
1605 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
1606 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
1608 priv->registered = 1;
1609 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1614 mlx4_en_destroy_netdev(dev);