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);
55 if ((vid == 0) || (vid > 4095)) /* Invalid */
57 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
59 field = 1 << (vid & 0x1f);
60 spin_lock(&priv->vlan_lock);
61 priv->vlgrp_modified = true;
62 if (priv->vlan_unregister[idx] & field)
63 priv->vlan_unregister[idx] &= ~field;
65 priv->vlan_register[idx] |= field;
66 priv->vlans[idx] |= field;
67 spin_unlock(&priv->vlan_lock);
70 static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid)
72 struct mlx4_en_priv *priv = netdev_priv(dev);
76 if ((vid == 0) || (vid > 4095)) /* Invalid */
78 en_dbg(HW, priv, "Killing VID:%d\n", vid);
80 field = 1 << (vid & 0x1f);
81 spin_lock(&priv->vlan_lock);
82 priv->vlgrp_modified = true;
83 if (priv->vlan_register[idx] & field)
84 priv->vlan_register[idx] &= ~field;
86 priv->vlan_unregister[idx] |= field;
87 priv->vlans[idx] &= ~field;
88 spin_unlock(&priv->vlan_lock);
91 u64 mlx4_en_mac_to_u64(u8 *addr)
96 for (i = 0; i < ETHER_ADDR_LEN; i++) {
103 static int mlx4_en_cache_mclist(struct net_device *dev, u64 **mcaddrp)
105 struct ifmultiaddr *ifma;
114 TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
115 if (ifma->ifma_addr->sa_family != AF_LINK)
117 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
122 if_maddr_runlock(dev);
125 mcaddr = kmalloc(sizeof(u64) * cnt, GFP_KERNEL);
130 TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
131 if (ifma->ifma_addr->sa_family != AF_LINK)
133 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
136 /* Make sure the list didn't grow. */
138 if_maddr_runlock(dev);
142 mcaddr[i++] = mlx4_en_mac_to_u64(
143 LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
145 if_maddr_runlock(dev);
151 static void mlx4_en_set_multicast(struct net_device *dev)
153 struct mlx4_en_priv *priv = netdev_priv(dev);
158 queue_work(priv->mdev->workqueue, &priv->mcast_task);
161 static void mlx4_en_do_set_multicast(struct work_struct *work)
163 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
165 struct net_device *dev = priv->dev;
166 struct mlx4_en_dev *mdev = priv->mdev;
169 mutex_lock(&mdev->state_lock);
170 if (!mdev->device_up) {
171 en_dbg(HW, priv, "Card is not up, "
172 "ignoring multicast change.\n");
175 if (!priv->port_up) {
176 en_dbg(HW, priv, "Port is down, "
177 "ignoring multicast change.\n");
182 * Promsicuous mode: disable all filters
185 if (dev->if_flags & IFF_PROMISC) {
186 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
187 priv->flags |= MLX4_EN_FLAG_PROMISC;
189 /* Enable promiscouos mode */
190 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
193 en_err(priv, "Failed enabling "
194 "promiscous mode\n");
196 /* Disable port multicast filter (unconditionally) */
197 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
198 0, MLX4_MCAST_DISABLE);
200 en_err(priv, "Failed disabling "
201 "multicast filter\n");
203 /* Disable port VLAN filter */
204 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, NULL);
206 en_err(priv, "Failed disabling VLAN filter\n");
212 * Not in promiscous mode
215 if (priv->flags & MLX4_EN_FLAG_PROMISC) {
216 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
218 /* Disable promiscouos mode */
219 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
222 en_err(priv, "Failed disabling promiscous mode\n");
224 /* Enable port VLAN filter */
225 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlans);
227 en_err(priv, "Failed enabling VLAN filter\n");
230 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
231 if (dev->if_flags & IFF_ALLMULTI) {
232 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
233 0, MLX4_MCAST_DISABLE);
235 en_err(priv, "Failed disabling multicast filter\n");
241 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
242 0, MLX4_MCAST_DISABLE);
244 en_err(priv, "Failed disabling multicast filter\n");
246 /* Flush mcast filter and init it with broadcast address */
247 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
248 1, MLX4_MCAST_CONFIG);
250 /* Update multicast list - we cache all addresses so they won't
251 * change while HW is updated holding the command semaphor */
252 mccount = mlx4_en_cache_mclist(dev, &mcaddr);
253 for (i = 0; i < mccount; i++)
254 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
255 mcaddr[i], 0, MLX4_MCAST_CONFIG);
256 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
257 0, MLX4_MCAST_ENABLE);
259 en_err(priv, "Failed enabling multicast filter\n");
264 mutex_unlock(&mdev->state_lock);
267 #ifdef CONFIG_NET_POLL_CONTROLLER
268 static void mlx4_en_netpoll(struct net_device *dev)
270 struct mlx4_en_priv *priv = netdev_priv(dev);
271 struct mlx4_en_cq *cq;
275 for (i = 0; i < priv->rx_ring_num; i++) {
276 cq = &priv->rx_cq[i];
277 spin_lock_irqsave(&cq->lock, flags);
278 napi_synchronize(&cq->napi);
279 mlx4_en_process_rx_cq(dev, cq, 0);
280 spin_unlock_irqrestore(&cq->lock, flags);
285 static void mlx4_en_watchdog_timeout(void *arg)
287 struct mlx4_en_priv *priv = arg;
288 struct mlx4_en_dev *mdev = priv->mdev;
290 en_dbg(DRV, priv, "Scheduling watchdog\n");
291 queue_work(mdev->workqueue, &priv->watchdog_task);
293 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
294 mlx4_en_watchdog_timeout, priv);
298 /* XXX This clears user settings in too many cases. */
299 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
301 struct mlx4_en_cq *cq;
304 /* If we haven't received a specific coalescing setting
305 * (module param), we set the moderation paramters as follows:
306 * - moder_cnt is set to the number of mtu sized packets to
307 * satisfy our coelsing target.
308 * - moder_time is set to a fixed value.
310 priv->rx_frames = MLX4_EN_RX_COAL_TARGET / priv->dev->if_mtu + 1;
311 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
312 en_dbg(INTR, priv, "Default coalesing params for mtu:%ld - "
313 "rx_frames:%d rx_usecs:%d\n",
314 priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
316 /* Setup cq moderation params */
317 for (i = 0; i < priv->rx_ring_num; i++) {
318 cq = &priv->rx_cq[i];
319 cq->moder_cnt = priv->rx_frames;
320 cq->moder_time = priv->rx_usecs;
323 for (i = 0; i < priv->tx_ring_num; i++) {
324 cq = &priv->tx_cq[i];
325 cq->moder_cnt = MLX4_EN_TX_COAL_PKTS;
326 cq->moder_time = MLX4_EN_TX_COAL_TIME;
329 /* Reset auto-moderation params */
330 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
331 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
332 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
333 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
334 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
335 priv->adaptive_rx_coal = 1;
336 priv->last_moder_time = MLX4_EN_AUTO_CONF;
337 priv->last_moder_jiffies = 0;
338 priv->last_moder_packets = 0;
339 priv->last_moder_tx_packets = 0;
340 priv->last_moder_bytes = 0;
343 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
345 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
346 struct mlx4_en_cq *cq;
347 unsigned long packets;
349 unsigned long avg_pkt_size;
350 unsigned long rx_packets;
351 unsigned long rx_bytes;
352 unsigned long tx_packets;
353 unsigned long tx_pkt_diff;
354 unsigned long rx_pkt_diff;
358 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
361 spin_lock(&priv->stats_lock);
362 rx_packets = priv->dev->if_ipackets;
363 rx_bytes = priv->dev->if_ibytes;
364 tx_packets = priv->dev->if_opackets;
365 spin_unlock(&priv->stats_lock);
367 if (!priv->last_moder_jiffies || !period)
370 tx_pkt_diff = ((unsigned long) (tx_packets -
371 priv->last_moder_tx_packets));
372 rx_pkt_diff = ((unsigned long) (rx_packets -
373 priv->last_moder_packets));
374 packets = max(tx_pkt_diff, rx_pkt_diff);
375 rate = packets * HZ / period;
376 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
377 priv->last_moder_bytes)) / packets : 0;
379 /* Apply auto-moderation only when packet rate exceeds a rate that
381 if (rate > MLX4_EN_RX_RATE_THRESH) {
382 /* If tx and rx packet rates are not balanced, assume that
383 * traffic is mainly BW bound and apply maximum moderation.
384 * Otherwise, moderate according to packet rate */
385 if (2 * tx_pkt_diff > 3 * rx_pkt_diff ||
386 2 * rx_pkt_diff > 3 * tx_pkt_diff) {
387 moder_time = priv->rx_usecs_high;
389 if (rate < priv->pkt_rate_low ||
390 avg_pkt_size < MLX4_EN_AVG_PKT_SMALL)
391 moder_time = priv->rx_usecs_low;
392 else if (rate > priv->pkt_rate_high)
393 moder_time = priv->rx_usecs_high;
395 moder_time = (rate - priv->pkt_rate_low) *
396 (priv->rx_usecs_high - priv->rx_usecs_low) /
397 (priv->pkt_rate_high - priv->pkt_rate_low) +
401 /* When packet rate is low, use default moderation rather than
402 * 0 to prevent interrupt storms if traffic suddenly increases */
403 moder_time = priv->rx_usecs;
406 en_dbg(INTR, priv, "tx rate:%lu rx_rate:%lu\n",
407 tx_pkt_diff * HZ / period, rx_pkt_diff * HZ / period);
409 en_dbg(INTR, priv, "Rx moder_time changed from:%d to %d period:%lu "
410 "[jiff] packets:%lu avg_pkt_size:%lu rate:%lu [p/s])\n",
411 priv->last_moder_time, moder_time, period, packets,
414 if (moder_time != priv->last_moder_time) {
415 priv->last_moder_time = moder_time;
416 for (i = 0; i < priv->rx_ring_num; i++) {
417 cq = &priv->rx_cq[i];
418 cq->moder_time = moder_time;
419 err = mlx4_en_set_cq_moder(priv, cq);
421 en_err(priv, "Failed modifying moderation for cq:%d\n", i);
428 priv->last_moder_packets = rx_packets;
429 priv->last_moder_tx_packets = tx_packets;
430 priv->last_moder_bytes = rx_bytes;
431 priv->last_moder_jiffies = jiffies;
434 static void mlx4_en_handle_vlans(struct mlx4_en_priv *priv)
436 u8 vlan_register[VLAN_FLTR_SIZE];
437 u8 vlan_unregister[VLAN_FLTR_SIZE];
441 /* cache the vlan data for processing
442 * done under lock to avoid changes during work */
443 spin_lock(&priv->vlan_lock);
444 for (i = 0; i < VLAN_FLTR_SIZE; i++) {
445 vlan_register[i] = priv->vlan_register[i];
446 priv->vlan_register[i] = 0;
447 vlan_unregister[i] = priv->vlan_unregister[i];
448 priv->vlan_unregister[i] = 0;
450 priv->vlgrp_modified = false;
451 spin_unlock(&priv->vlan_lock);
453 /* Configure the vlan filter
454 * The vlgrp is updated with all the vids that need to be allowed */
455 if (mlx4_SET_VLAN_FLTR(priv->mdev->dev, priv->port, priv->vlans))
456 en_err(priv, "Failed configuring VLAN filter\n");
458 /* Configure the VLAN table */
459 for (i = 0; i < VLAN_FLTR_SIZE; i++) {
460 for (j = 0; j < 32; j++) {
462 if (vlan_register[i] & (1 << j))
463 if (mlx4_register_vlan(priv->mdev->dev, priv->port, vid, &idx))
464 en_dbg(HW, priv, "failed registering vlan %d\n", vid);
465 if (vlan_unregister[i] & (1 << j)) {
466 if (!mlx4_find_cached_vlan(priv->mdev->dev, priv->port, vid, &idx))
467 mlx4_unregister_vlan(priv->mdev->dev, priv->port, idx);
469 en_dbg(HW, priv, "could not find vid %d in cache\n", vid);
475 static void mlx4_en_do_get_stats(struct work_struct *work)
477 struct delayed_work *delay = to_delayed_work(work);
478 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
480 struct mlx4_en_dev *mdev = priv->mdev;
483 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
485 en_dbg(HW, priv, "Could not update stats \n");
488 mutex_lock(&mdev->state_lock);
489 if (mdev->device_up) {
491 if (priv->vlgrp_modified)
492 mlx4_en_handle_vlans(priv);
494 mlx4_en_auto_moderation(priv);
497 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
499 mutex_unlock(&mdev->state_lock);
502 static void mlx4_en_linkstate(struct work_struct *work)
504 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
506 struct mlx4_en_dev *mdev = priv->mdev;
507 int linkstate = priv->link_state;
509 mutex_lock(&mdev->state_lock);
510 /* If observable port state changed set carrier state and
511 * report to system log */
512 if (priv->last_link_state != linkstate) {
513 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
514 if_link_state_change(priv->dev, LINK_STATE_DOWN);
516 en_info(priv, "Link Up\n");
517 if_link_state_change(priv->dev, LINK_STATE_UP);
520 priv->last_link_state = linkstate;
521 mutex_unlock(&mdev->state_lock);
525 int mlx4_en_start_port(struct net_device *dev)
527 struct mlx4_en_priv *priv = netdev_priv(dev);
528 struct mlx4_en_dev *mdev = priv->mdev;
529 struct mlx4_en_cq *cq;
530 struct mlx4_en_tx_ring *tx_ring;
539 en_dbg(DRV, priv, "start port called while port already up\n");
543 /* Calculate Rx buf size */
544 dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
545 mlx4_en_calc_rx_buf(dev);
546 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
548 /* Configure rx cq's and rings */
549 err = mlx4_en_activate_rx_rings(priv);
551 en_err(priv, "Failed to activate RX rings\n");
555 for (i = 0; i < priv->rx_ring_num; i++) {
556 cq = &priv->rx_cq[i];
558 err = mlx4_en_activate_cq(priv, cq);
560 en_err(priv, "Failed activating Rx CQ\n");
563 for (j = 0; j < cq->size; j++)
564 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
565 err = mlx4_en_set_cq_moder(priv, cq);
567 en_err(priv, "Failed setting cq moderation parameters");
568 mlx4_en_deactivate_cq(priv, cq);
571 mlx4_en_arm_cq(priv, cq);
572 priv->rx_ring[i].cqn = cq->mcq.cqn;
576 err = mlx4_en_config_rss_steer(priv);
578 en_err(priv, "Failed configuring rss steering\n");
582 /* Configure tx cq's and rings */
583 for (i = 0; i < priv->tx_ring_num; i++) {
585 cq = &priv->tx_cq[i];
586 err = mlx4_en_activate_cq(priv, cq);
588 en_err(priv, "Failed allocating Tx CQ\n");
591 err = mlx4_en_set_cq_moder(priv, cq);
593 en_err(priv, "Failed setting cq moderation parameters");
594 mlx4_en_deactivate_cq(priv, cq);
597 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
598 cq->buf->wqe_index = cpu_to_be16(0xffff);
601 tx_ring = &priv->tx_ring[i];
602 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn);
604 en_err(priv, "Failed allocating Tx ring\n");
605 mlx4_en_deactivate_cq(priv, cq);
608 /* Set initial ownership of all Tx TXBBs to SW (1) */
609 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
610 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
615 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
616 priv->rx_mb_size + ETHER_CRC_LEN,
617 priv->prof->tx_pause,
619 priv->prof->rx_pause,
622 en_err(priv, "Failed setting port general configurations "
623 "for port %d, with error %d\n", priv->port, err);
626 /* Set default qp number */
627 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
629 en_err(priv, "Failed setting default qp numbers\n");
632 /* Set port mac number */
633 en_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
634 err = mlx4_register_mac(mdev->dev, priv->port,
635 mlx4_en_mac_to_u64(IF_LLADDR(dev)),
638 en_err(priv, "Failed setting port mac\n");
641 mdev->mac_removed[priv->port] = 0;
644 en_dbg(HW, priv, "Initializing port\n");
645 err = mlx4_INIT_PORT(mdev->dev, priv->port);
647 en_err(priv, "Failed Initializing port\n");
651 /* Set the various hardware offload abilities */
652 dev->if_hwassist = 0;
653 if (dev->if_capenable & IFCAP_TSO4)
654 dev->if_hwassist |= CSUM_TSO;
655 if (dev->if_capenable & IFCAP_TXCSUM)
656 dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
657 if (dev->if_capenable & IFCAP_RXCSUM)
662 err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
664 en_err(priv, "Failed to get WoL info, unable to modify\n");
667 if (dev->if_capenable & IFCAP_WOL_MAGIC) {
668 config |= MLX4_EN_WOL_DO_MODIFY | MLX4_EN_WOL_ENABLED |
671 config &= ~(MLX4_EN_WOL_ENABLED | MLX4_EN_WOL_MAGIC);
672 config |= MLX4_EN_WOL_DO_MODIFY;
675 err = mlx4_wol_write(priv->mdev->dev, config, priv->port);
677 en_err(priv, "Failed to set WoL information\n");
681 priv->port_up = true;
683 /* Populate multicast list */
684 mlx4_en_set_multicast(dev);
686 /* Enable the queues. */
687 dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
688 dev->if_drv_flags |= IFF_DRV_RUNNING;
690 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
691 mlx4_en_watchdog_timeout, priv);
697 mlx4_CLOSE_PORT(mdev->dev, priv->port);
700 mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
703 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
704 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
707 mlx4_en_release_rss_steer(priv);
710 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
711 for (i = 0; i < priv->rx_ring_num; i++)
712 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
714 return err; /* need to close devices */
718 void mlx4_en_stop_port(struct net_device *dev)
720 struct mlx4_en_priv *priv = netdev_priv(dev);
721 struct mlx4_en_dev *mdev = priv->mdev;
724 if (!priv->port_up) {
725 en_dbg(DRV, priv, "stop port called while port already down\n");
729 /* Set port as not active */
730 priv->port_up = false;
732 /* Unregister Mac address for the port */
733 mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
734 mdev->mac_removed[priv->port] = 1;
737 for (i = 0; i < priv->tx_ring_num; i++) {
738 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
739 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
743 for (i = 0; i < priv->tx_ring_num; i++)
744 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
747 mlx4_en_release_rss_steer(priv);
750 for (i = 0; i < priv->rx_ring_num; i++) {
751 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
752 mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
756 mlx4_CLOSE_PORT(mdev->dev, priv->port);
758 callout_stop(&priv->watchdog_timer);
760 dev->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
763 static void mlx4_en_restart(struct work_struct *work)
765 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
767 struct mlx4_en_dev *mdev = priv->mdev;
768 struct net_device *dev = priv->dev;
769 struct mlx4_en_tx_ring *ring;
772 if (priv->blocked == 0 || priv->port_up == 0)
774 for (i = 0; i < priv->tx_ring_num; i++) {
775 ring = &priv->tx_ring[i];
777 ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks)
783 priv->port_stats.tx_timeout++;
784 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
786 mutex_lock(&mdev->state_lock);
788 mlx4_en_stop_port(dev);
789 if (mlx4_en_start_port(dev))
790 en_err(priv, "Failed restarting port %d\n", priv->port);
792 mutex_unlock(&mdev->state_lock);
797 mlx4_en_init(void *arg)
799 struct mlx4_en_priv *priv;
800 struct mlx4_en_dev *mdev;
804 mutex_lock(&mdev->state_lock);
805 mlx4_en_init_locked(priv);
806 mutex_unlock(&mdev->state_lock);
810 mlx4_en_init_locked(struct mlx4_en_priv *priv)
813 struct mlx4_en_dev *mdev;
819 if (dev->if_drv_flags & IFF_DRV_RUNNING)
820 mlx4_en_stop_port(dev);
822 if (!mdev->device_up) {
823 en_err(priv, "Cannot open - device down/disabled\n");
827 /* Reset HW statistics and performance counters */
828 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
829 en_dbg(HW, priv, "Failed dumping statistics\n");
831 memset(&priv->pstats, 0, sizeof(priv->pstats));
833 for (i = 0; i < priv->tx_ring_num; i++) {
834 priv->tx_ring[i].bytes = 0;
835 priv->tx_ring[i].packets = 0;
837 for (i = 0; i < priv->rx_ring_num; i++) {
838 priv->rx_ring[i].bytes = 0;
839 priv->rx_ring[i].packets = 0;
842 mlx4_en_set_default_moderation(priv);
843 if (mlx4_en_start_port(dev))
844 en_err(priv, "Failed starting port:%d\n", priv->port);
847 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
851 for (i = 0; i < priv->tx_ring_num; i++) {
852 if (priv->tx_ring[i].tx_info)
853 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
854 if (priv->tx_cq[i].buf)
855 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
858 for (i = 0; i < priv->rx_ring_num; i++) {
859 if (priv->rx_ring[i].rx_info)
860 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
861 if (priv->rx_cq[i].buf)
862 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
864 /* Free the stats tree when we resize the rings. */
866 sysctl_ctx_free(&priv->stat_ctx);
870 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
872 struct mlx4_en_port_profile *prof = priv->prof;
875 /* Create tx Rings */
876 for (i = 0; i < priv->tx_ring_num; i++) {
877 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
878 prof->tx_ring_size, i, TX))
881 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
882 prof->tx_ring_size, TXBB_SIZE))
886 /* Create rx Rings */
887 for (i = 0; i < priv->rx_ring_num; i++) {
888 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
889 prof->rx_ring_size, i, RX))
892 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
897 /* Re-create stat sysctls in case the number of rings changed. */
898 mlx4_en_sysctl_stat(priv);
900 /* Populate Tx priority mappings */
901 mlx4_en_set_prio_map(priv, priv->tx_prio_map,
902 priv->tx_ring_num - MLX4_EN_NUM_HASH_RINGS);
907 en_err(priv, "Failed to allocate NIC resources\n");
912 void mlx4_en_destroy_netdev(struct net_device *dev)
914 struct mlx4_en_priv *priv = netdev_priv(dev);
915 struct mlx4_en_dev *mdev = priv->mdev;
917 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
919 if (priv->vlan_attach != NULL)
920 EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
921 if (priv->vlan_detach != NULL)
922 EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
924 /* Unregister device - this will close the port if it was up */
925 if (priv->registered)
929 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
932 sysctl_ctx_free(&priv->conf_ctx);
934 mutex_lock(&mdev->state_lock);
935 mlx4_en_stop_port(dev);
936 mutex_unlock(&mdev->state_lock);
938 cancel_delayed_work(&priv->stats_task);
939 /* flush any pending task for this netdev */
940 flush_workqueue(mdev->workqueue);
941 callout_drain(&priv->watchdog_timer);
943 /* Detach the netdev so tasks would not attempt to access it */
944 mutex_lock(&mdev->state_lock);
945 mdev->pndev[priv->port] = NULL;
946 mutex_unlock(&mdev->state_lock);
948 mlx4_en_free_resources(priv);
949 mtx_destroy(&priv->stats_lock.m);
950 mtx_destroy(&priv->vlan_lock.m);
955 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
957 struct mlx4_en_priv *priv = netdev_priv(dev);
958 struct mlx4_en_dev *mdev = priv->mdev;
961 en_dbg(DRV, priv, "Change MTU called - current:%ld new:%d\n",
962 dev->if_mtu, new_mtu);
964 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
965 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
968 mutex_lock(&mdev->state_lock);
969 dev->if_mtu = new_mtu;
970 if (dev->if_drv_flags & IFF_DRV_RUNNING) {
971 if (!mdev->device_up) {
972 /* NIC is probably restarting - let watchdog task reset
974 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
976 mlx4_en_stop_port(dev);
977 mlx4_en_set_default_moderation(priv);
978 err = mlx4_en_start_port(dev);
980 en_err(priv, "Failed restarting port:%d\n",
982 queue_work(mdev->workqueue, &priv->watchdog_task);
986 mutex_unlock(&mdev->state_lock);
990 static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
996 if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
998 if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
1001 trans_type = priv->port_state.transciver;
1002 /* XXX I don't know all of the transceiver values. */
1003 switch (priv->port_state.link_speed) {
1005 active |= IFM_1000_T;
1008 if (trans_type > 0 && trans_type <= 0xC)
1009 active |= IFM_10G_SR;
1010 else if (trans_type == 0x80 || trans_type == 0)
1011 active |= IFM_10G_CX4;
1014 active |= IFM_40G_CR4;
1017 if (priv->prof->tx_pause)
1018 active |= IFM_ETH_TXPAUSE;
1019 if (priv->prof->rx_pause)
1020 active |= IFM_ETH_RXPAUSE;
1026 static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
1028 struct mlx4_en_priv *priv;
1030 priv = dev->if_softc;
1031 ifmr->ifm_status = IFM_AVALID;
1032 if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
1033 ifmr->ifm_status |= IFM_ACTIVE;
1034 ifmr->ifm_active = mlx4_en_calc_media(priv);
1039 static int mlx4_en_media_change(struct ifnet *dev)
1041 struct mlx4_en_priv *priv;
1042 struct ifmedia *ifm;
1047 priv = dev->if_softc;
1049 rxpause = txpause = 0;
1052 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1054 switch (IFM_SUBTYPE(ifm->ifm_media)) {
1060 if (IFM_SUBTYPE(ifm->ifm_media) ==
1061 IFM_SUBTYPE(mlx4_en_calc_media(priv)) &&
1062 (ifm->ifm_media & IFM_FDX))
1066 printf("%s: Only auto media type\n", if_name(dev));
1069 /* Allow user to set/clear pause */
1070 if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
1072 if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
1074 if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
1075 priv->prof->tx_pause = txpause;
1076 priv->prof->rx_pause = rxpause;
1077 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1078 priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
1079 priv->prof->tx_ppp, priv->prof->rx_pause,
1080 priv->prof->rx_ppp);
1085 static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
1087 struct mlx4_en_priv *priv;
1088 struct mlx4_en_dev *mdev;
1095 priv = dev->if_softc;
1097 ifr = (struct ifreq *) data;
1100 error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
1103 mutex_lock(&mdev->state_lock);
1104 if (dev->if_flags & IFF_UP) {
1105 if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0)
1106 mlx4_en_start_port(dev);
1108 mlx4_en_set_multicast(dev);
1110 if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1111 mlx4_en_stop_port(dev);
1112 if_link_state_change(dev, LINK_STATE_DOWN);
1115 mutex_unlock(&mdev->state_lock);
1119 mutex_lock(&mdev->state_lock);
1120 mlx4_en_set_multicast(dev);
1121 mutex_unlock(&mdev->state_lock);
1125 error = ifmedia_ioctl(dev, ifr, &priv->media, command);
1128 mutex_lock(&mdev->state_lock);
1129 mask = ifr->ifr_reqcap ^ dev->if_capenable;
1130 if (mask & IFCAP_HWCSUM)
1131 dev->if_capenable ^= IFCAP_HWCSUM;
1132 if (mask & IFCAP_TSO4)
1133 dev->if_capenable ^= IFCAP_TSO4;
1134 if (mask & IFCAP_LRO)
1135 dev->if_capenable ^= IFCAP_LRO;
1136 if (mask & IFCAP_VLAN_HWTAGGING)
1137 dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1138 if (mask & IFCAP_VLAN_HWFILTER)
1139 dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
1140 if (mask & IFCAP_WOL_MAGIC)
1141 dev->if_capenable ^= IFCAP_WOL_MAGIC;
1142 if (dev->if_drv_flags & IFF_DRV_RUNNING)
1143 mlx4_en_init_locked(priv);
1144 mutex_unlock(&mdev->state_lock);
1145 VLAN_CAPABILITIES(dev);
1148 error = ether_ioctl(dev, command, data);
1155 static int mlx4_en_set_ring_size(struct net_device *dev,
1156 int rx_size, int tx_size)
1158 struct mlx4_en_priv *priv = netdev_priv(dev);
1159 struct mlx4_en_dev *mdev = priv->mdev;
1163 rx_size = roundup_pow_of_two(rx_size);
1164 rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
1165 rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
1166 tx_size = roundup_pow_of_two(tx_size);
1167 tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
1168 tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
1170 if (rx_size == (priv->port_up ?
1171 priv->rx_ring[0].actual_size : priv->rx_ring[0].size) &&
1172 tx_size == priv->tx_ring[0].size)
1175 mutex_lock(&mdev->state_lock);
1176 if (priv->port_up) {
1178 mlx4_en_stop_port(dev);
1180 mlx4_en_free_resources(priv);
1181 priv->prof->tx_ring_size = tx_size;
1182 priv->prof->rx_ring_size = rx_size;
1183 err = mlx4_en_alloc_resources(priv);
1185 en_err(priv, "Failed reallocating port resources\n");
1189 err = mlx4_en_start_port(dev);
1191 en_err(priv, "Failed starting port\n");
1194 mutex_unlock(&mdev->state_lock);
1198 static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
1200 struct mlx4_en_priv *priv;
1205 size = priv->prof->rx_ring_size;
1206 error = sysctl_handle_int(oidp, &size, 0, req);
1207 if (error || !req->newptr)
1209 error = -mlx4_en_set_ring_size(priv->dev, size,
1210 priv->prof->tx_ring_size);
1215 static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
1217 struct mlx4_en_priv *priv;
1222 size = priv->prof->tx_ring_size;
1223 error = sysctl_handle_int(oidp, &size, 0, req);
1224 if (error || !req->newptr)
1226 error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
1232 static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
1234 struct mlx4_en_priv *priv;
1239 ppp = priv->prof->tx_ppp;
1240 error = sysctl_handle_int(oidp, &ppp, 0, req);
1241 if (error || !req->newptr)
1243 if (ppp > 0xff || ppp < 0)
1245 priv->prof->tx_ppp = ppp;
1246 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1247 priv->rx_mb_size + ETHER_CRC_LEN,
1248 priv->prof->tx_pause,
1250 priv->prof->rx_pause,
1251 priv->prof->rx_ppp);
1256 static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
1258 struct mlx4_en_priv *priv;
1259 struct mlx4_en_dev *mdev;
1268 ppp = priv->prof->rx_ppp;
1269 error = sysctl_handle_int(oidp, &ppp, 0, req);
1270 if (error || !req->newptr)
1272 if (ppp > 0xff || ppp < 0)
1274 /* See if we have to change the number of tx queues. */
1275 if (!ppp != !priv->prof->rx_ppp) {
1276 tx_ring_num = MLX4_EN_NUM_HASH_RINGS + 1 +
1277 (!!ppp) * MLX4_EN_NUM_PPP_RINGS;
1278 mutex_lock(&mdev->state_lock);
1279 if (priv->port_up) {
1281 mlx4_en_stop_port(priv->dev);
1283 mlx4_en_free_resources(priv);
1284 priv->tx_ring_num = tx_ring_num;
1285 priv->prof->rx_ppp = ppp;
1286 error = -mlx4_en_alloc_resources(priv);
1288 en_err(priv, "Failed reallocating port resources\n");
1289 if (error == 0 && port_up) {
1290 error = -mlx4_en_start_port(priv->dev);
1292 en_err(priv, "Failed starting port\n");
1294 mutex_unlock(&mdev->state_lock);
1298 priv->prof->rx_ppp = ppp;
1299 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1300 priv->rx_mb_size + ETHER_CRC_LEN,
1301 priv->prof->tx_pause,
1303 priv->prof->rx_pause,
1304 priv->prof->rx_ppp);
1309 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
1311 struct net_device *dev;
1312 struct sysctl_ctx_list *ctx;
1313 struct sysctl_oid *node;
1314 struct sysctl_oid_list *node_list;
1315 struct sysctl_oid *coal;
1316 struct sysctl_oid_list *coal_list;
1319 ctx = &priv->conf_ctx;
1321 sysctl_ctx_init(ctx);
1322 priv->sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
1323 OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
1324 node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
1325 "conf", CTLFLAG_RD, NULL, "Configuration");
1326 node_list = SYSCTL_CHILDREN(node);
1328 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
1329 CTLFLAG_RW, &priv->msg_enable, 0,
1330 "Driver message enable bitfield");
1331 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
1332 CTLTYPE_INT | CTLFLAG_RD, &priv->rx_ring_num, 0,
1333 "Number of receive rings");
1334 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
1335 CTLTYPE_INT | CTLFLAG_RD, &priv->tx_ring_num, 0,
1336 "Number of transmit rings");
1337 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
1338 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1339 mlx4_en_set_rx_ring_size, "I", "Receive ring size");
1340 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
1341 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1342 mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
1343 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "ip_reasm",
1344 CTLFLAG_RW, &priv->ip_reasm, 0,
1345 "Allow reassembly of IP fragments.");
1346 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
1347 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1348 mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
1349 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
1350 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1351 mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
1353 /* Add coalescer configuration. */
1354 coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
1355 "coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
1356 coal_list = SYSCTL_CHILDREN(node);
1357 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
1358 CTLFLAG_RW, &priv->pkt_rate_low, 0,
1359 "Packets per-second for minimum delay");
1360 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
1361 CTLFLAG_RW, &priv->rx_usecs_low, 0,
1362 "Minimum RX delay in micro-seconds");
1363 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
1364 CTLFLAG_RW, &priv->pkt_rate_high, 0,
1365 "Packets per-second for maximum delay");
1366 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
1367 CTLFLAG_RW, &priv->rx_usecs_high, 0,
1368 "Maximum RX delay in micro-seconds");
1369 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
1370 CTLFLAG_RW, &priv->sample_interval, 0,
1371 "adaptive frequency in units of HZ ticks");
1372 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
1373 CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
1374 "Enable adaptive rx coalescing");
1377 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
1379 struct net_device *dev;
1380 struct sysctl_ctx_list *ctx;
1381 struct sysctl_oid *node;
1382 struct sysctl_oid_list *node_list;
1383 struct sysctl_oid *ring_node;
1384 struct sysctl_oid_list *ring_list;
1385 struct mlx4_en_tx_ring *tx_ring;
1386 struct mlx4_en_rx_ring *rx_ring;
1392 ctx = &priv->stat_ctx;
1393 sysctl_ctx_init(ctx);
1394 node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
1395 "stat", CTLFLAG_RD, NULL, "Statistics");
1396 node_list = SYSCTL_CHILDREN(node);
1398 #ifdef MLX4_EN_PERF_STAT
1399 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
1400 &priv->pstats.tx_poll, "TX Poll calls");
1401 SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
1402 &priv->pstats.tx_pktsz_avg, "TX average packet size");
1403 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
1404 &priv->pstats.inflight_avg, "TX average packets in-flight");
1405 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
1406 &priv->pstats.tx_coal_avg, "TX average coalesced completions");
1407 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
1408 &priv->pstats.rx_coal_avg, "RX average coalesced completions");
1411 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
1412 &priv->port_stats.tso_packets, "TSO packets sent");
1413 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
1414 &priv->port_stats.queue_stopped, "Queue full");
1415 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
1416 &priv->port_stats.wake_queue, "Queue resumed after full");
1417 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
1418 &priv->port_stats.tx_timeout, "Transmit timeouts");
1419 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
1420 &priv->port_stats.rx_alloc_failed, "RX failed to allocate mbuf");
1421 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
1422 &priv->port_stats.rx_chksum_good, "RX checksum offload success");
1423 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
1424 &priv->port_stats.rx_chksum_none, "RX without checksum offload");
1425 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_chksum_offload",
1426 CTLFLAG_RD, &priv->port_stats.tx_chksum_offload,
1427 "TX checksum offloads");
1429 /* Could strdup the names and add in a loop. This is simpler. */
1430 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "broadcast", CTLFLAG_RD,
1431 &priv->pkstats.broadcast, "Broadcast packets");
1432 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio0", CTLFLAG_RD,
1433 &priv->pkstats.tx_prio[0], "TX Priority 0 packets");
1434 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio1", CTLFLAG_RD,
1435 &priv->pkstats.tx_prio[1], "TX Priority 1 packets");
1436 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio2", CTLFLAG_RD,
1437 &priv->pkstats.tx_prio[2], "TX Priority 2 packets");
1438 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio3", CTLFLAG_RD,
1439 &priv->pkstats.tx_prio[3], "TX Priority 3 packets");
1440 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio4", CTLFLAG_RD,
1441 &priv->pkstats.tx_prio[4], "TX Priority 4 packets");
1442 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio5", CTLFLAG_RD,
1443 &priv->pkstats.tx_prio[5], "TX Priority 5 packets");
1444 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio6", CTLFLAG_RD,
1445 &priv->pkstats.tx_prio[6], "TX Priority 6 packets");
1446 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio7", CTLFLAG_RD,
1447 &priv->pkstats.tx_prio[7], "TX Priority 7 packets");
1448 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio0", CTLFLAG_RD,
1449 &priv->pkstats.rx_prio[0], "RX Priority 0 packets");
1450 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio1", CTLFLAG_RD,
1451 &priv->pkstats.rx_prio[1], "RX Priority 1 packets");
1452 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio2", CTLFLAG_RD,
1453 &priv->pkstats.rx_prio[2], "RX Priority 2 packets");
1454 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio3", CTLFLAG_RD,
1455 &priv->pkstats.rx_prio[3], "RX Priority 3 packets");
1456 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio4", CTLFLAG_RD,
1457 &priv->pkstats.rx_prio[4], "RX Priority 4 packets");
1458 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio5", CTLFLAG_RD,
1459 &priv->pkstats.rx_prio[5], "RX Priority 5 packets");
1460 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio6", CTLFLAG_RD,
1461 &priv->pkstats.rx_prio[6], "RX Priority 6 packets");
1462 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio7", CTLFLAG_RD,
1463 &priv->pkstats.rx_prio[7], "RX Priority 7 packets");
1465 for (i = 0; i < priv->tx_ring_num; i++) {
1466 tx_ring = &priv->tx_ring[i];
1467 snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
1468 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
1469 CTLFLAG_RD, NULL, "TX Ring");
1470 ring_list = SYSCTL_CHILDREN(ring_node);
1471 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
1472 CTLFLAG_RD, &tx_ring->packets, "TX packets");
1473 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
1474 CTLFLAG_RD, &tx_ring->bytes, "TX bytes");
1475 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
1476 CTLFLAG_RD, &tx_ring->errors, "TX soft errors");
1479 for (i = 0; i < priv->rx_ring_num; i++) {
1480 rx_ring = &priv->rx_ring[i];
1481 snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
1482 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
1483 CTLFLAG_RD, NULL, "RX Ring");
1484 ring_list = SYSCTL_CHILDREN(ring_node);
1485 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
1486 CTLFLAG_RD, &rx_ring->packets, "RX packets");
1487 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
1488 CTLFLAG_RD, &rx_ring->bytes, "RX bytes");
1489 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
1490 CTLFLAG_RD, &rx_ring->errors, "RX soft errors");
1491 SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_queued",
1492 CTLFLAG_RD, &rx_ring->lro.lro_queued, 0, "LRO Queued");
1493 SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_flushed",
1494 CTLFLAG_RD, &rx_ring->lro.lro_flushed, 0, "LRO Flushed");
1498 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
1499 struct mlx4_en_port_profile *prof)
1501 static volatile int mlx4_en_unit;
1502 struct net_device *dev;
1503 struct mlx4_en_priv *priv;
1504 uint8_t dev_addr[ETHER_ADDR_LEN];
1508 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1509 dev = priv->dev = if_alloc(IFT_ETHER);
1511 mlx4_err(mdev, "Net device allocation failed\n");
1515 dev->if_softc = priv;
1516 if_initname(dev, "mlxen", atomic_fetchadd_int(&mlx4_en_unit, 1));
1517 dev->if_mtu = ETHERMTU;
1518 dev->if_baudrate = 1000000000;
1519 dev->if_init = mlx4_en_init;
1520 dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1521 dev->if_ioctl = mlx4_en_ioctl;
1522 dev->if_transmit = mlx4_en_transmit;
1523 dev->if_qflush = mlx4_en_qflush;
1524 dev->if_snd.ifq_maxlen = prof->tx_ring_size;
1527 * Initialize driver private data
1533 priv->port_up = false;
1535 priv->flags = prof->flags;
1536 priv->tx_ring_num = prof->tx_ring_num;
1537 priv->rx_ring_num = prof->rx_ring_num;
1538 priv->mac_index = -1;
1539 priv->msg_enable = MLX4_EN_MSG_LEVEL;
1540 priv->ip_reasm = priv->mdev->profile.ip_reasm;
1541 mtx_init(&priv->stats_lock.m, "mlx4 stats", NULL, MTX_DEF);
1542 mtx_init(&priv->vlan_lock.m, "mlx4 vlan", NULL, MTX_DEF);
1543 INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
1544 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
1545 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
1546 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
1547 callout_init(&priv->watchdog_timer, 1);
1549 /* Query for default mac and max mtu */
1550 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
1551 priv->mac = mdev->dev->caps.def_mac[priv->port];
1553 if (ILLEGAL_MAC(priv->mac)) {
1554 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
1555 priv->port, priv->mac);
1560 mlx4_en_sysctl_conf(priv);
1562 err = mlx4_en_alloc_resources(priv);
1566 /* Allocate page for receive rings */
1567 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
1568 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
1570 en_err(priv, "Failed to allocate page for rx qps\n");
1573 priv->allocated = 1;
1576 * Set driver features
1578 dev->if_capabilities |= IFCAP_RXCSUM | IFCAP_TXCSUM;
1579 dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
1580 dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
1581 dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
1582 if (mdev->LSO_support)
1583 dev->if_capabilities |= IFCAP_TSO4 | IFCAP_VLAN_HWTSO;
1584 if (mdev->profile.num_lro)
1585 dev->if_capabilities |= IFCAP_LRO;
1586 dev->if_capenable = dev->if_capabilities;
1588 * Setup wake-on-lan.
1590 if (priv->mdev->dev->caps.wol) {
1592 if (mlx4_wol_read(priv->mdev->dev, &config, priv->port) == 0) {
1593 if (config & MLX4_EN_WOL_MAGIC)
1594 dev->if_capabilities |= IFCAP_WOL_MAGIC;
1595 if (config & MLX4_EN_WOL_ENABLED)
1596 dev->if_capenable |= IFCAP_WOL_MAGIC;
1600 /* Register for VLAN events */
1601 priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
1602 mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
1603 priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
1604 mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
1606 mdev->pndev[priv->port] = dev;
1608 priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
1609 if_link_state_change(dev, LINK_STATE_DOWN);
1611 /* Set default MAC */
1612 for (i = 0; i < ETHER_ADDR_LEN; i++)
1613 dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
1615 ether_ifattach(dev, dev_addr);
1616 ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
1617 mlx4_en_media_change, mlx4_en_media_status);
1618 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
1619 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
1620 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
1621 ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1622 ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
1624 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
1625 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
1627 priv->registered = 1;
1628 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1633 mlx4_en_destroy_netdev(dev);