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_sysctl_stat(struct mlx4_en_priv *priv);
48 static void mlx4_en_vlan_rx_add_vid(void *arg, struct net_device *dev, u16 vid)
50 struct mlx4_en_priv *priv = netdev_priv(dev);
54 if ((vid == 0) || (vid > 4095)) /* Invalid */
56 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
58 field = 1 << (vid & 0x1f);
59 spin_lock(&priv->vlan_lock);
60 priv->vlgrp_modified = true;
61 if (priv->vlan_unregister[idx] & field)
62 priv->vlan_unregister[idx] &= ~field;
64 priv->vlan_register[idx] |= field;
65 priv->vlans[idx] |= field;
66 spin_unlock(&priv->vlan_lock);
69 static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid)
71 struct mlx4_en_priv *priv = netdev_priv(dev);
75 if ((vid == 0) || (vid > 4095)) /* Invalid */
77 en_dbg(HW, priv, "Killing VID:%d\n", vid);
79 field = 1 << (vid & 0x1f);
80 spin_lock(&priv->vlan_lock);
81 priv->vlgrp_modified = true;
82 if (priv->vlan_register[idx] & field)
83 priv->vlan_register[idx] &= ~field;
85 priv->vlan_unregister[idx] |= field;
86 priv->vlans[idx] &= ~field;
87 spin_unlock(&priv->vlan_lock);
90 u64 mlx4_en_mac_to_u64(u8 *addr)
95 for (i = 0; i < ETHER_ADDR_LEN; i++) {
102 static int mlx4_en_cache_mclist(struct net_device *dev, u64 **mcaddrp)
104 struct ifmultiaddr *ifma;
113 TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
114 if (ifma->ifma_addr->sa_family != AF_LINK)
116 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
121 if_maddr_runlock(dev);
124 mcaddr = kmalloc(sizeof(u64) * cnt, GFP_KERNEL);
129 TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
130 if (ifma->ifma_addr->sa_family != AF_LINK)
132 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
135 /* Make sure the list didn't grow. */
137 if_maddr_runlock(dev);
141 mcaddr[i++] = mlx4_en_mac_to_u64(
142 LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
144 if_maddr_runlock(dev);
150 static void mlx4_en_set_multicast(struct net_device *dev)
152 struct mlx4_en_priv *priv = netdev_priv(dev);
157 queue_work(priv->mdev->workqueue, &priv->mcast_task);
160 static void mlx4_en_do_set_multicast(struct work_struct *work)
162 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
164 struct net_device *dev = priv->dev;
165 struct mlx4_en_dev *mdev = priv->mdev;
168 mutex_lock(&mdev->state_lock);
169 if (!mdev->device_up) {
170 en_dbg(HW, priv, "Card is not up, "
171 "ignoring multicast change.\n");
174 if (!priv->port_up) {
175 en_dbg(HW, priv, "Port is down, "
176 "ignoring multicast change.\n");
181 * Promsicuous mode: disable all filters
184 if (dev->if_flags & IFF_PROMISC) {
185 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
186 priv->flags |= MLX4_EN_FLAG_PROMISC;
188 /* Enable promiscouos mode */
189 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
192 en_err(priv, "Failed enabling "
193 "promiscous mode\n");
195 /* Disable port multicast filter (unconditionally) */
196 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
197 0, MLX4_MCAST_DISABLE);
199 en_err(priv, "Failed disabling "
200 "multicast filter\n");
202 /* Disable port VLAN filter */
203 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, NULL);
205 en_err(priv, "Failed disabling VLAN filter\n");
211 * Not in promiscous mode
214 if (priv->flags & MLX4_EN_FLAG_PROMISC) {
215 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
217 /* Disable promiscouos mode */
218 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
221 en_err(priv, "Failed disabling promiscous mode\n");
223 /* Enable port VLAN filter */
224 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlans);
226 en_err(priv, "Failed enabling VLAN filter\n");
229 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
230 if (dev->if_flags & IFF_ALLMULTI) {
231 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
232 0, MLX4_MCAST_DISABLE);
234 en_err(priv, "Failed disabling multicast filter\n");
240 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
241 0, MLX4_MCAST_DISABLE);
243 en_err(priv, "Failed disabling multicast filter\n");
245 /* Flush mcast filter and init it with broadcast address */
246 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
247 1, MLX4_MCAST_CONFIG);
249 /* Update multicast list - we cache all addresses so they won't
250 * change while HW is updated holding the command semaphor */
251 mccount = mlx4_en_cache_mclist(dev, &mcaddr);
252 for (i = 0; i < mccount; i++)
253 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
254 mcaddr[i], 0, MLX4_MCAST_CONFIG);
255 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
256 0, MLX4_MCAST_ENABLE);
258 en_err(priv, "Failed enabling multicast filter\n");
263 mutex_unlock(&mdev->state_lock);
266 #ifdef CONFIG_NET_POLL_CONTROLLER
267 static void mlx4_en_netpoll(struct net_device *dev)
269 struct mlx4_en_priv *priv = netdev_priv(dev);
270 struct mlx4_en_cq *cq;
274 for (i = 0; i < priv->rx_ring_num; i++) {
275 cq = &priv->rx_cq[i];
276 spin_lock_irqsave(&cq->lock, flags);
277 napi_synchronize(&cq->napi);
278 mlx4_en_process_rx_cq(dev, cq, 0);
279 spin_unlock_irqrestore(&cq->lock, flags);
284 static void mlx4_en_watchdog_timeout(void *arg)
286 struct mlx4_en_priv *priv = arg;
287 struct mlx4_en_dev *mdev = priv->mdev;
289 en_dbg(DRV, priv, "Scheduling watchdog\n");
290 queue_work(mdev->workqueue, &priv->watchdog_task);
292 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
293 mlx4_en_watchdog_timeout, priv);
297 /* XXX This clears user settings in too many cases. */
298 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
300 struct mlx4_en_cq *cq;
303 /* If we haven't received a specific coalescing setting
304 * (module param), we set the moderation paramters as follows:
305 * - moder_cnt is set to the number of mtu sized packets to
306 * satisfy our coelsing target.
307 * - moder_time is set to a fixed value.
309 priv->rx_frames = MLX4_EN_RX_COAL_TARGET / priv->dev->if_mtu + 1;
310 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
311 en_dbg(INTR, priv, "Default coalesing params for mtu:%ld - "
312 "rx_frames:%d rx_usecs:%d\n",
313 priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
315 /* Setup cq moderation params */
316 for (i = 0; i < priv->rx_ring_num; i++) {
317 cq = &priv->rx_cq[i];
318 cq->moder_cnt = priv->rx_frames;
319 cq->moder_time = priv->rx_usecs;
322 for (i = 0; i < priv->tx_ring_num; i++) {
323 cq = &priv->tx_cq[i];
324 cq->moder_cnt = MLX4_EN_TX_COAL_PKTS;
325 cq->moder_time = MLX4_EN_TX_COAL_TIME;
328 /* Reset auto-moderation params */
329 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
330 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
331 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
332 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
333 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
334 priv->adaptive_rx_coal = 1;
335 priv->last_moder_time = MLX4_EN_AUTO_CONF;
336 priv->last_moder_jiffies = 0;
337 priv->last_moder_packets = 0;
338 priv->last_moder_tx_packets = 0;
339 priv->last_moder_bytes = 0;
342 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
344 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
345 struct mlx4_en_cq *cq;
346 unsigned long packets;
348 unsigned long avg_pkt_size;
349 unsigned long rx_packets;
350 unsigned long rx_bytes;
351 unsigned long tx_packets;
352 unsigned long tx_pkt_diff;
353 unsigned long rx_pkt_diff;
357 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
360 spin_lock(&priv->stats_lock);
361 rx_packets = priv->dev->if_ipackets;
362 rx_bytes = priv->dev->if_ibytes;
363 tx_packets = priv->dev->if_opackets;
364 spin_unlock(&priv->stats_lock);
366 if (!priv->last_moder_jiffies || !period)
369 tx_pkt_diff = ((unsigned long) (tx_packets -
370 priv->last_moder_tx_packets));
371 rx_pkt_diff = ((unsigned long) (rx_packets -
372 priv->last_moder_packets));
373 packets = max(tx_pkt_diff, rx_pkt_diff);
374 rate = packets * HZ / period;
375 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
376 priv->last_moder_bytes)) / packets : 0;
378 /* Apply auto-moderation only when packet rate exceeds a rate that
380 if (rate > MLX4_EN_RX_RATE_THRESH) {
381 /* If tx and rx packet rates are not balanced, assume that
382 * traffic is mainly BW bound and apply maximum moderation.
383 * Otherwise, moderate according to packet rate */
384 if (2 * tx_pkt_diff > 3 * rx_pkt_diff ||
385 2 * rx_pkt_diff > 3 * tx_pkt_diff) {
386 moder_time = priv->rx_usecs_high;
388 if (rate < priv->pkt_rate_low ||
389 avg_pkt_size < MLX4_EN_AVG_PKT_SMALL)
390 moder_time = priv->rx_usecs_low;
391 else if (rate > priv->pkt_rate_high)
392 moder_time = priv->rx_usecs_high;
394 moder_time = (rate - priv->pkt_rate_low) *
395 (priv->rx_usecs_high - priv->rx_usecs_low) /
396 (priv->pkt_rate_high - priv->pkt_rate_low) +
400 /* When packet rate is low, use default moderation rather than
401 * 0 to prevent interrupt storms if traffic suddenly increases */
402 moder_time = priv->rx_usecs;
405 en_dbg(INTR, priv, "tx rate:%lu rx_rate:%lu\n",
406 tx_pkt_diff * HZ / period, rx_pkt_diff * HZ / period);
408 en_dbg(INTR, priv, "Rx moder_time changed from:%d to %d period:%lu "
409 "[jiff] packets:%lu avg_pkt_size:%lu rate:%lu [p/s])\n",
410 priv->last_moder_time, moder_time, period, packets,
413 if (moder_time != priv->last_moder_time) {
414 priv->last_moder_time = moder_time;
415 for (i = 0; i < priv->rx_ring_num; i++) {
416 cq = &priv->rx_cq[i];
417 cq->moder_time = moder_time;
418 err = mlx4_en_set_cq_moder(priv, cq);
420 en_err(priv, "Failed modifying moderation for cq:%d\n", i);
427 priv->last_moder_packets = rx_packets;
428 priv->last_moder_tx_packets = tx_packets;
429 priv->last_moder_bytes = rx_bytes;
430 priv->last_moder_jiffies = jiffies;
433 static void mlx4_en_handle_vlans(struct mlx4_en_priv *priv)
435 u8 vlan_register[VLAN_FLTR_SIZE];
436 u8 vlan_unregister[VLAN_FLTR_SIZE];
440 /* cache the vlan data for processing
441 * done under lock to avoid changes during work */
442 spin_lock(&priv->vlan_lock);
443 for (i = 0; i < VLAN_FLTR_SIZE; i++) {
444 vlan_register[i] = priv->vlan_register[i];
445 priv->vlan_register[i] = 0;
446 vlan_unregister[i] = priv->vlan_unregister[i];
447 priv->vlan_unregister[i] = 0;
449 priv->vlgrp_modified = false;
450 spin_unlock(&priv->vlan_lock);
452 /* Configure the vlan filter
453 * The vlgrp is updated with all the vids that need to be allowed */
454 if (mlx4_SET_VLAN_FLTR(priv->mdev->dev, priv->port, priv->vlans))
455 en_err(priv, "Failed configuring VLAN filter\n");
457 /* Configure the VLAN table */
458 for (i = 0; i < VLAN_FLTR_SIZE; i++) {
459 for (j = 0; j < 32; j++) {
461 if (vlan_register[i] & (1 << j))
462 if (mlx4_register_vlan(priv->mdev->dev, priv->port, vid, &idx))
463 en_dbg(HW, priv, "failed registering vlan %d\n", vid);
464 if (vlan_unregister[i] & (1 << j)) {
465 if (!mlx4_find_cached_vlan(priv->mdev->dev, priv->port, vid, &idx))
466 mlx4_unregister_vlan(priv->mdev->dev, priv->port, idx);
468 en_dbg(HW, priv, "could not find vid %d in cache\n", vid);
474 static void mlx4_en_do_get_stats(struct work_struct *work)
476 struct delayed_work *delay = to_delayed_work(work);
477 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
479 struct mlx4_en_dev *mdev = priv->mdev;
482 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
484 en_dbg(HW, priv, "Could not update stats \n");
487 mutex_lock(&mdev->state_lock);
488 if (mdev->device_up) {
490 if (priv->vlgrp_modified)
491 mlx4_en_handle_vlans(priv);
493 mlx4_en_auto_moderation(priv);
496 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
498 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
499 panic("mlx4_en_do_get_stats: Unexpected mac removed for %d\n",
501 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
503 mutex_unlock(&mdev->state_lock);
506 static void mlx4_en_linkstate(struct work_struct *work)
508 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
510 struct mlx4_en_dev *mdev = priv->mdev;
511 int linkstate = priv->link_state;
513 mutex_lock(&mdev->state_lock);
514 /* If observable port state changed set carrier state and
515 * report to system log */
516 if (priv->last_link_state != linkstate) {
517 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
518 if_link_state_change(priv->dev, LINK_STATE_DOWN);
520 en_info(priv, "Link Up\n");
521 if_link_state_change(priv->dev, LINK_STATE_UP);
524 priv->last_link_state = linkstate;
525 mutex_unlock(&mdev->state_lock);
529 int mlx4_en_start_port(struct net_device *dev)
531 struct mlx4_en_priv *priv = netdev_priv(dev);
532 struct mlx4_en_dev *mdev = priv->mdev;
533 struct mlx4_en_cq *cq;
534 struct mlx4_en_tx_ring *tx_ring;
543 en_dbg(DRV, priv, "start port called while port already up\n");
547 /* Calculate Rx buf size */
548 dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
549 mlx4_en_calc_rx_buf(dev);
550 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
552 /* Configure rx cq's and rings */
553 err = mlx4_en_activate_rx_rings(priv);
555 en_err(priv, "Failed to activate RX rings\n");
559 for (i = 0; i < priv->rx_ring_num; i++) {
560 cq = &priv->rx_cq[i];
562 err = mlx4_en_activate_cq(priv, cq);
564 en_err(priv, "Failed activating Rx CQ\n");
567 for (j = 0; j < cq->size; j++)
568 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
569 err = mlx4_en_set_cq_moder(priv, cq);
571 en_err(priv, "Failed setting cq moderation parameters");
572 mlx4_en_deactivate_cq(priv, cq);
575 mlx4_en_arm_cq(priv, cq);
576 priv->rx_ring[i].cqn = cq->mcq.cqn;
580 err = mlx4_en_config_rss_steer(priv);
582 en_err(priv, "Failed configuring rss steering\n");
586 /* Configure tx cq's and rings */
587 for (i = 0; i < priv->tx_ring_num; i++) {
589 cq = &priv->tx_cq[i];
590 err = mlx4_en_activate_cq(priv, cq);
592 en_err(priv, "Failed allocating Tx CQ\n");
595 err = mlx4_en_set_cq_moder(priv, cq);
597 en_err(priv, "Failed setting cq moderation parameters");
598 mlx4_en_deactivate_cq(priv, cq);
601 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
602 cq->buf->wqe_index = cpu_to_be16(0xffff);
605 tx_ring = &priv->tx_ring[i];
606 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn);
608 en_err(priv, "Failed allocating Tx ring\n");
609 mlx4_en_deactivate_cq(priv, cq);
612 /* Set initial ownership of all Tx TXBBs to SW (1) */
613 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
614 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
619 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
620 priv->rx_mb_size + ETHER_CRC_LEN,
621 priv->prof->tx_pause,
623 priv->prof->rx_pause,
626 en_err(priv, "Failed setting port general configurations "
627 "for port %d, with error %d\n", priv->port, err);
630 /* Set default qp number */
631 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
633 en_err(priv, "Failed setting default qp numbers\n");
636 /* Set port mac number */
637 en_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
638 err = mlx4_register_mac(mdev->dev, priv->port,
639 mlx4_en_mac_to_u64(IF_LLADDR(dev)),
642 en_err(priv, "Failed setting port mac\n");
645 mdev->mac_removed[priv->port] = 0;
648 en_dbg(HW, priv, "Initializing port\n");
649 err = mlx4_INIT_PORT(mdev->dev, priv->port);
651 en_err(priv, "Failed Initializing port\n");
655 /* Set the various hardware offload abilities */
656 dev->if_hwassist = 0;
657 if (dev->if_capenable & IFCAP_TSO4)
658 dev->if_hwassist |= CSUM_TSO;
659 if (dev->if_capenable & IFCAP_TXCSUM)
660 dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
661 if (dev->if_capenable & IFCAP_RXCSUM)
666 err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
668 en_err(priv, "Failed to get WoL info, unable to modify\n");
671 if (dev->if_capenable & IFCAP_WOL_MAGIC) {
672 config |= MLX4_EN_WOL_DO_MODIFY | MLX4_EN_WOL_ENABLED |
675 config &= ~(MLX4_EN_WOL_ENABLED | MLX4_EN_WOL_MAGIC);
676 config |= MLX4_EN_WOL_DO_MODIFY;
679 err = mlx4_wol_write(priv->mdev->dev, config, priv->port);
681 en_err(priv, "Failed to set WoL information\n");
685 priv->port_up = true;
687 /* Populate multicast list */
688 mlx4_en_set_multicast(dev);
690 /* Enable the queues. */
691 atomic_clear_int(&dev->if_drv_flags, IFF_DRV_OACTIVE);
692 atomic_set_int(&dev->if_drv_flags, IFF_DRV_RUNNING);
694 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
695 mlx4_en_watchdog_timeout, priv);
701 mlx4_CLOSE_PORT(mdev->dev, priv->port);
704 mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
707 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
708 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
711 mlx4_en_release_rss_steer(priv);
714 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
715 for (i = 0; i < priv->rx_ring_num; i++)
716 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
718 return err; /* need to close devices */
722 void mlx4_en_stop_port(struct net_device *dev)
724 struct mlx4_en_priv *priv = netdev_priv(dev);
725 struct mlx4_en_dev *mdev = priv->mdev;
728 if (!priv->port_up) {
729 en_dbg(DRV, priv, "stop port called while port already down\n");
733 /* Set port as not active */
734 priv->port_up = false;
736 /* Unregister Mac address for the port */
737 mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
738 mdev->mac_removed[priv->port] = 1;
741 for (i = 0; i < priv->tx_ring_num; i++) {
742 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
743 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
747 for (i = 0; i < priv->tx_ring_num; i++)
748 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
751 mlx4_en_release_rss_steer(priv);
754 for (i = 0; i < priv->rx_ring_num; i++) {
755 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
756 mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
760 mlx4_CLOSE_PORT(mdev->dev, priv->port);
762 callout_stop(&priv->watchdog_timer);
764 atomic_clear_int(&dev->if_drv_flags, IFF_DRV_RUNNING);
767 static void mlx4_en_restart(struct work_struct *work)
769 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
771 struct mlx4_en_dev *mdev = priv->mdev;
772 struct net_device *dev = priv->dev;
773 struct mlx4_en_tx_ring *ring;
776 if (priv->blocked == 0 || priv->port_up == 0)
778 for (i = 0; i < priv->tx_ring_num; i++) {
779 ring = &priv->tx_ring[i];
781 ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks)
787 priv->port_stats.tx_timeout++;
788 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
790 mutex_lock(&mdev->state_lock);
792 mlx4_en_stop_port(dev);
793 if (mlx4_en_start_port(dev))
794 en_err(priv, "Failed restarting port %d\n", priv->port);
796 mutex_unlock(&mdev->state_lock);
801 mlx4_en_init(void *arg)
803 struct mlx4_en_priv *priv;
804 struct mlx4_en_dev *mdev;
811 mutex_lock(&mdev->state_lock);
812 if (dev->if_drv_flags & IFF_DRV_RUNNING)
813 mlx4_en_stop_port(dev);
815 if (!mdev->device_up) {
816 en_err(priv, "Cannot open - device down/disabled\n");
820 /* Reset HW statistics and performance counters */
821 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
822 en_dbg(HW, priv, "Failed dumping statistics\n");
824 memset(&priv->pstats, 0, sizeof(priv->pstats));
826 for (i = 0; i < priv->tx_ring_num; i++) {
827 priv->tx_ring[i].bytes = 0;
828 priv->tx_ring[i].packets = 0;
830 for (i = 0; i < priv->rx_ring_num; i++) {
831 priv->rx_ring[i].bytes = 0;
832 priv->rx_ring[i].packets = 0;
835 mlx4_en_set_default_moderation(priv);
836 if (mlx4_en_start_port(dev))
837 en_err(priv, "Failed starting port:%d\n", priv->port);
840 mutex_unlock(&mdev->state_lock);
843 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
847 for (i = 0; i < priv->tx_ring_num; i++) {
848 if (priv->tx_ring[i].tx_info)
849 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
850 if (priv->tx_cq[i].buf)
851 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
854 for (i = 0; i < priv->rx_ring_num; i++) {
855 if (priv->rx_ring[i].rx_info)
856 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
857 if (priv->rx_cq[i].buf)
858 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
860 /* Free the stats tree when we resize the rings. */
862 sysctl_ctx_free(&priv->stat_ctx);
866 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
868 struct mlx4_en_port_profile *prof = priv->prof;
871 /* Create tx Rings */
872 for (i = 0; i < priv->tx_ring_num; i++) {
873 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
874 prof->tx_ring_size, i, TX))
877 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
878 prof->tx_ring_size, TXBB_SIZE))
882 /* Create rx Rings */
883 for (i = 0; i < priv->rx_ring_num; i++) {
884 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
885 prof->rx_ring_size, i, RX))
888 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
893 /* Re-create stat sysctls in case the number of rings changed. */
894 mlx4_en_sysctl_stat(priv);
896 /* Populate Tx priority mappings */
897 mlx4_en_set_prio_map(priv, priv->tx_prio_map,
898 priv->tx_ring_num - MLX4_EN_NUM_HASH_RINGS);
903 en_err(priv, "Failed to allocate NIC resources\n");
908 void mlx4_en_destroy_netdev(struct net_device *dev)
910 struct mlx4_en_priv *priv = netdev_priv(dev);
911 struct mlx4_en_dev *mdev = priv->mdev;
913 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
915 if (priv->vlan_attach != NULL)
916 EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
917 if (priv->vlan_detach != NULL)
918 EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
920 /* Unregister device - this will close the port if it was up */
921 if (priv->registered)
925 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
928 sysctl_ctx_free(&priv->conf_ctx);
930 cancel_delayed_work(&priv->stats_task);
931 /* flush any pending task for this netdev */
932 flush_workqueue(mdev->workqueue);
934 /* Detach the netdev so tasks would not attempt to access it */
935 mutex_lock(&mdev->state_lock);
936 mdev->pndev[priv->port] = NULL;
937 mutex_unlock(&mdev->state_lock);
939 mlx4_en_free_resources(priv);
940 mtx_destroy(&priv->stats_lock.m);
941 mtx_destroy(&priv->vlan_lock.m);
946 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
948 struct mlx4_en_priv *priv = netdev_priv(dev);
949 struct mlx4_en_dev *mdev = priv->mdev;
952 en_dbg(DRV, priv, "Change MTU called - current:%ld new:%d\n",
953 dev->if_mtu, new_mtu);
955 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
956 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
959 mutex_lock(&mdev->state_lock);
960 dev->if_mtu = new_mtu;
961 if (dev->if_drv_flags & IFF_DRV_RUNNING) {
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 mlx4_en_set_default_moderation(priv);
969 err = mlx4_en_start_port(dev);
971 en_err(priv, "Failed restarting port:%d\n",
973 queue_work(mdev->workqueue, &priv->watchdog_task);
977 mutex_unlock(&mdev->state_lock);
981 static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
987 if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
989 if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
992 trans_type = priv->port_state.transciver;
993 /* XXX I don't know all of the transceiver values. */
994 switch (priv->port_state.link_speed) {
996 active |= IFM_1000_T;
999 if (trans_type > 0 && trans_type <= 0xC)
1000 active |= IFM_10G_SR;
1001 else if (trans_type == 0x80 || trans_type == 0)
1002 active |= IFM_10G_CX4;
1005 active |= IFM_40G_CR4;
1008 if (priv->prof->tx_pause)
1009 active |= IFM_ETH_TXPAUSE;
1010 if (priv->prof->rx_pause)
1011 active |= IFM_ETH_RXPAUSE;
1017 static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
1019 struct mlx4_en_priv *priv;
1021 priv = dev->if_softc;
1022 ifmr->ifm_status = IFM_AVALID;
1023 if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
1024 ifmr->ifm_status |= IFM_ACTIVE;
1025 ifmr->ifm_active = mlx4_en_calc_media(priv);
1030 static int mlx4_en_media_change(struct ifnet *dev)
1032 struct mlx4_en_priv *priv;
1033 struct ifmedia *ifm;
1038 priv = dev->if_softc;
1040 rxpause = txpause = 0;
1043 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1045 switch (IFM_SUBTYPE(ifm->ifm_media)) {
1051 if (IFM_SUBTYPE(ifm->ifm_media) ==
1052 IFM_SUBTYPE(mlx4_en_calc_media(priv)) &&
1053 (ifm->ifm_media & IFM_FDX))
1057 printf("%s: Only auto media type\n", if_name(dev));
1060 /* Allow user to set/clear pause */
1061 if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
1063 if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
1065 if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
1066 priv->prof->tx_pause = txpause;
1067 priv->prof->rx_pause = rxpause;
1068 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1069 priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
1070 priv->prof->tx_ppp, priv->prof->rx_pause,
1071 priv->prof->rx_ppp);
1076 static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
1078 struct mlx4_en_priv *priv;
1079 struct mlx4_en_dev *mdev;
1086 priv = dev->if_softc;
1088 ifr = (struct ifreq *) data;
1091 error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
1094 if (dev->if_flags & IFF_UP) {
1095 if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1096 mutex_lock(&mdev->state_lock);
1097 mlx4_en_start_port(dev);
1098 mutex_unlock(&mdev->state_lock);
1100 mlx4_en_set_multicast(dev);
1102 mutex_lock(&mdev->state_lock);
1103 if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1104 mlx4_en_stop_port(dev);
1105 if_link_state_change(dev, LINK_STATE_DOWN);
1107 mutex_unlock(&mdev->state_lock);
1112 mlx4_en_set_multicast(dev);
1116 error = ifmedia_ioctl(dev, ifr, &priv->media, command);
1119 mask = ifr->ifr_reqcap ^ dev->if_capenable;
1120 if (mask & IFCAP_HWCSUM)
1121 dev->if_capenable ^= IFCAP_HWCSUM;
1122 if (mask & IFCAP_TSO4)
1123 dev->if_capenable ^= IFCAP_TSO4;
1124 if (mask & IFCAP_LRO)
1125 dev->if_capenable ^= IFCAP_LRO;
1126 if (mask & IFCAP_VLAN_HWTAGGING)
1127 dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1128 if (mask & IFCAP_VLAN_HWFILTER)
1129 dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
1130 if (mask & IFCAP_WOL_MAGIC)
1131 dev->if_capenable ^= IFCAP_WOL_MAGIC;
1132 if (dev->if_drv_flags & IFF_DRV_RUNNING)
1134 VLAN_CAPABILITIES(dev);
1137 error = ether_ioctl(dev, command, data);
1144 static int mlx4_en_set_ring_size(struct net_device *dev,
1145 int rx_size, int tx_size)
1147 struct mlx4_en_priv *priv = netdev_priv(dev);
1148 struct mlx4_en_dev *mdev = priv->mdev;
1152 rx_size = roundup_pow_of_two(rx_size);
1153 rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
1154 rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
1155 tx_size = roundup_pow_of_two(tx_size);
1156 tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
1157 tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
1159 if (rx_size == (priv->port_up ?
1160 priv->rx_ring[0].actual_size : priv->rx_ring[0].size) &&
1161 tx_size == priv->tx_ring[0].size)
1164 mutex_lock(&mdev->state_lock);
1165 if (priv->port_up) {
1167 mlx4_en_stop_port(dev);
1169 mlx4_en_free_resources(priv);
1170 priv->prof->tx_ring_size = tx_size;
1171 priv->prof->rx_ring_size = rx_size;
1172 err = mlx4_en_alloc_resources(priv);
1174 en_err(priv, "Failed reallocating port resources\n");
1178 err = mlx4_en_start_port(dev);
1180 en_err(priv, "Failed starting port\n");
1183 mutex_unlock(&mdev->state_lock);
1187 static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
1189 struct mlx4_en_priv *priv;
1194 size = priv->prof->rx_ring_size;
1195 error = sysctl_handle_int(oidp, &size, 0, req);
1196 if (error || !req->newptr)
1198 error = -mlx4_en_set_ring_size(priv->dev, size,
1199 priv->prof->tx_ring_size);
1204 static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
1206 struct mlx4_en_priv *priv;
1211 size = priv->prof->tx_ring_size;
1212 error = sysctl_handle_int(oidp, &size, 0, req);
1213 if (error || !req->newptr)
1215 error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
1221 static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
1223 struct mlx4_en_priv *priv;
1228 ppp = priv->prof->tx_ppp;
1229 error = sysctl_handle_int(oidp, &ppp, 0, req);
1230 if (error || !req->newptr)
1232 if (ppp > 0xff || ppp < 0)
1234 priv->prof->tx_ppp = ppp;
1235 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1236 priv->rx_mb_size + ETHER_CRC_LEN,
1237 priv->prof->tx_pause,
1239 priv->prof->rx_pause,
1240 priv->prof->rx_ppp);
1245 static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
1247 struct mlx4_en_priv *priv;
1248 struct mlx4_en_dev *mdev;
1257 ppp = priv->prof->rx_ppp;
1258 error = sysctl_handle_int(oidp, &ppp, 0, req);
1259 if (error || !req->newptr)
1261 if (ppp > 0xff || ppp < 0)
1263 /* See if we have to change the number of tx queues. */
1264 if (!ppp != !priv->prof->rx_ppp) {
1265 tx_ring_num = MLX4_EN_NUM_HASH_RINGS + 1 +
1266 (!!ppp) * MLX4_EN_NUM_PPP_RINGS;
1267 mutex_lock(&mdev->state_lock);
1268 if (priv->port_up) {
1270 mlx4_en_stop_port(priv->dev);
1272 mlx4_en_free_resources(priv);
1273 priv->tx_ring_num = tx_ring_num;
1274 priv->prof->rx_ppp = ppp;
1275 error = -mlx4_en_alloc_resources(priv);
1277 en_err(priv, "Failed reallocating port resources\n");
1278 if (error == 0 && port_up) {
1279 error = -mlx4_en_start_port(priv->dev);
1281 en_err(priv, "Failed starting port\n");
1283 mutex_unlock(&mdev->state_lock);
1287 priv->prof->rx_ppp = ppp;
1288 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1289 priv->rx_mb_size + ETHER_CRC_LEN,
1290 priv->prof->tx_pause,
1292 priv->prof->rx_pause,
1293 priv->prof->rx_ppp);
1298 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
1300 struct net_device *dev;
1301 struct sysctl_ctx_list *ctx;
1302 struct sysctl_oid *node;
1303 struct sysctl_oid_list *node_list;
1304 struct sysctl_oid *coal;
1305 struct sysctl_oid_list *coal_list;
1308 ctx = &priv->conf_ctx;
1310 sysctl_ctx_init(ctx);
1311 priv->sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
1312 OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
1313 node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
1314 "conf", CTLFLAG_RD, NULL, "Configuration");
1315 node_list = SYSCTL_CHILDREN(node);
1317 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
1318 CTLFLAG_RW, &priv->msg_enable, 0,
1319 "Driver message enable bitfield");
1320 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
1321 CTLTYPE_INT | CTLFLAG_RD, &priv->rx_ring_num, 0,
1322 "Number of receive rings");
1323 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
1324 CTLTYPE_INT | CTLFLAG_RD, &priv->tx_ring_num, 0,
1325 "Number of transmit rings");
1326 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
1327 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1328 mlx4_en_set_rx_ring_size, "I", "Receive ring size");
1329 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
1330 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1331 mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
1332 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "ip_reasm",
1333 CTLFLAG_RW, &priv->ip_reasm, 0,
1334 "Allow reassembly of IP fragments.");
1335 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
1336 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1337 mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
1338 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
1339 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1340 mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
1342 /* Add coalescer configuration. */
1343 coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
1344 "coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
1345 coal_list = SYSCTL_CHILDREN(node);
1346 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
1347 CTLFLAG_RW, &priv->pkt_rate_low, 0,
1348 "Packets per-second for minimum delay");
1349 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
1350 CTLFLAG_RW, &priv->rx_usecs_low, 0,
1351 "Minimum RX delay in micro-seconds");
1352 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
1353 CTLFLAG_RW, &priv->pkt_rate_high, 0,
1354 "Packets per-second for maximum delay");
1355 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
1356 CTLFLAG_RW, &priv->rx_usecs_high, 0,
1357 "Maximum RX delay in micro-seconds");
1358 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
1359 CTLFLAG_RW, &priv->sample_interval, 0,
1360 "adaptive frequency in units of HZ ticks");
1361 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
1362 CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
1363 "Enable adaptive rx coalescing");
1366 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
1368 struct net_device *dev;
1369 struct sysctl_ctx_list *ctx;
1370 struct sysctl_oid *node;
1371 struct sysctl_oid_list *node_list;
1372 struct sysctl_oid *ring_node;
1373 struct sysctl_oid_list *ring_list;
1374 struct mlx4_en_tx_ring *tx_ring;
1375 struct mlx4_en_rx_ring *rx_ring;
1381 ctx = &priv->stat_ctx;
1382 sysctl_ctx_init(ctx);
1383 node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
1384 "stat", CTLFLAG_RD, NULL, "Statistics");
1385 node_list = SYSCTL_CHILDREN(node);
1387 #ifdef MLX4_EN_PERF_STAT
1388 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
1389 &priv->pstats.tx_poll, "TX Poll calls");
1390 SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
1391 &priv->pstats.tx_pktsz_avg, "TX average packet size");
1392 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
1393 &priv->pstats.inflight_avg, "TX average packets in-flight");
1394 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
1395 &priv->pstats.tx_coal_avg, "TX average coalesced completions");
1396 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
1397 &priv->pstats.rx_coal_avg, "RX average coalesced completions");
1400 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
1401 &priv->port_stats.tso_packets, "TSO packets sent");
1402 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
1403 &priv->port_stats.queue_stopped, "Queue full");
1404 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
1405 &priv->port_stats.wake_queue, "Queue resumed after full");
1406 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
1407 &priv->port_stats.tx_timeout, "Transmit timeouts");
1408 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
1409 &priv->port_stats.rx_alloc_failed, "RX failed to allocate mbuf");
1410 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
1411 &priv->port_stats.rx_chksum_good, "RX checksum offload success");
1412 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
1413 &priv->port_stats.rx_chksum_none, "RX without checksum offload");
1414 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_chksum_offload",
1415 CTLFLAG_RD, &priv->port_stats.tx_chksum_offload,
1416 "TX checksum offloads");
1418 /* Could strdup the names and add in a loop. This is simpler. */
1419 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "broadcast", CTLFLAG_RD,
1420 &priv->pkstats.broadcast, "Broadcast packets");
1421 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio0", CTLFLAG_RD,
1422 &priv->pkstats.tx_prio[0], "TX Priority 0 packets");
1423 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio1", CTLFLAG_RD,
1424 &priv->pkstats.tx_prio[1], "TX Priority 1 packets");
1425 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio2", CTLFLAG_RD,
1426 &priv->pkstats.tx_prio[2], "TX Priority 2 packets");
1427 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio3", CTLFLAG_RD,
1428 &priv->pkstats.tx_prio[3], "TX Priority 3 packets");
1429 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio4", CTLFLAG_RD,
1430 &priv->pkstats.tx_prio[4], "TX Priority 4 packets");
1431 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio5", CTLFLAG_RD,
1432 &priv->pkstats.tx_prio[5], "TX Priority 5 packets");
1433 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio6", CTLFLAG_RD,
1434 &priv->pkstats.tx_prio[6], "TX Priority 6 packets");
1435 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio7", CTLFLAG_RD,
1436 &priv->pkstats.tx_prio[7], "TX Priority 7 packets");
1437 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio0", CTLFLAG_RD,
1438 &priv->pkstats.rx_prio[0], "RX Priority 0 packets");
1439 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio1", CTLFLAG_RD,
1440 &priv->pkstats.rx_prio[1], "RX Priority 1 packets");
1441 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio2", CTLFLAG_RD,
1442 &priv->pkstats.rx_prio[2], "RX Priority 2 packets");
1443 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio3", CTLFLAG_RD,
1444 &priv->pkstats.rx_prio[3], "RX Priority 3 packets");
1445 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio4", CTLFLAG_RD,
1446 &priv->pkstats.rx_prio[4], "RX Priority 4 packets");
1447 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio5", CTLFLAG_RD,
1448 &priv->pkstats.rx_prio[5], "RX Priority 5 packets");
1449 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio6", CTLFLAG_RD,
1450 &priv->pkstats.rx_prio[6], "RX Priority 6 packets");
1451 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio7", CTLFLAG_RD,
1452 &priv->pkstats.rx_prio[7], "RX Priority 7 packets");
1454 for (i = 0; i < priv->tx_ring_num; i++) {
1455 tx_ring = &priv->tx_ring[i];
1456 snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
1457 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
1458 CTLFLAG_RD, NULL, "TX Ring");
1459 ring_list = SYSCTL_CHILDREN(ring_node);
1460 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
1461 CTLFLAG_RD, &tx_ring->packets, "TX packets");
1462 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
1463 CTLFLAG_RD, &tx_ring->bytes, "TX bytes");
1464 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
1465 CTLFLAG_RD, &tx_ring->errors, "TX soft errors");
1468 for (i = 0; i < priv->rx_ring_num; i++) {
1469 rx_ring = &priv->rx_ring[i];
1470 snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
1471 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
1472 CTLFLAG_RD, NULL, "RX Ring");
1473 ring_list = SYSCTL_CHILDREN(ring_node);
1474 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
1475 CTLFLAG_RD, &rx_ring->packets, "RX packets");
1476 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
1477 CTLFLAG_RD, &rx_ring->bytes, "RX bytes");
1478 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
1479 CTLFLAG_RD, &rx_ring->errors, "RX soft errors");
1480 SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_queued",
1481 CTLFLAG_RD, &rx_ring->lro.lro_queued, 0, "LRO Queued");
1482 SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_flushed",
1483 CTLFLAG_RD, &rx_ring->lro.lro_flushed, 0, "LRO Flushed");
1487 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
1488 struct mlx4_en_port_profile *prof)
1490 static volatile int mlx4_en_unit;
1491 struct net_device *dev;
1492 struct mlx4_en_priv *priv;
1493 uint8_t dev_addr[ETHER_ADDR_LEN];
1497 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1498 dev = priv->dev = if_alloc(IFT_ETHER);
1500 mlx4_err(mdev, "Net device allocation failed\n");
1504 dev->if_softc = priv;
1505 if_initname(dev, "mlxen", atomic_fetchadd_int(&mlx4_en_unit, 1));
1506 dev->if_mtu = ETHERMTU;
1507 dev->if_baudrate = 1000000000;
1508 dev->if_init = mlx4_en_init;
1509 dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1510 dev->if_ioctl = mlx4_en_ioctl;
1511 dev->if_transmit = mlx4_en_transmit;
1512 dev->if_qflush = mlx4_en_qflush;
1513 dev->if_snd.ifq_maxlen = prof->tx_ring_size;
1516 * Initialize driver private data
1522 priv->port_up = false;
1524 priv->flags = prof->flags;
1525 priv->tx_ring_num = prof->tx_ring_num;
1526 priv->rx_ring_num = prof->rx_ring_num;
1527 priv->mac_index = -1;
1528 priv->msg_enable = MLX4_EN_MSG_LEVEL;
1529 priv->ip_reasm = priv->mdev->profile.ip_reasm;
1530 mtx_init(&priv->stats_lock.m, "mlx4 stats", NULL, MTX_DEF);
1531 mtx_init(&priv->vlan_lock.m, "mlx4 vlan", NULL, MTX_DEF);
1532 INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
1533 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
1534 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
1535 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
1536 callout_init(&priv->watchdog_timer, 1);
1538 /* Query for default mac and max mtu */
1539 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
1540 priv->mac = mdev->dev->caps.def_mac[priv->port];
1542 if (ILLEGAL_MAC(priv->mac)) {
1543 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
1544 priv->port, priv->mac);
1549 mlx4_en_sysctl_conf(priv);
1551 err = mlx4_en_alloc_resources(priv);
1555 /* Allocate page for receive rings */
1556 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
1557 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
1559 en_err(priv, "Failed to allocate page for rx qps\n");
1562 priv->allocated = 1;
1565 * Set driver features
1567 dev->if_capabilities |= IFCAP_RXCSUM | IFCAP_TXCSUM;
1568 dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
1569 dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
1570 dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
1571 if (mdev->LSO_support)
1572 dev->if_capabilities |= IFCAP_TSO4 | IFCAP_VLAN_HWTSO;
1573 if (mdev->profile.num_lro)
1574 dev->if_capabilities |= IFCAP_LRO;
1575 dev->if_capenable = dev->if_capabilities;
1577 * Setup wake-on-lan.
1579 if (priv->mdev->dev->caps.wol) {
1581 if (mlx4_wol_read(priv->mdev->dev, &config, priv->port) == 0) {
1582 if (config & MLX4_EN_WOL_MAGIC)
1583 dev->if_capabilities |= IFCAP_WOL_MAGIC;
1584 if (config & MLX4_EN_WOL_ENABLED)
1585 dev->if_capenable |= IFCAP_WOL_MAGIC;
1589 /* Register for VLAN events */
1590 priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
1591 mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
1592 priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
1593 mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
1595 mdev->pndev[priv->port] = dev;
1597 priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
1598 if_link_state_change(dev, LINK_STATE_DOWN);
1600 /* Set default MAC */
1601 for (i = 0; i < ETHER_ADDR_LEN; i++)
1602 dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
1604 ether_ifattach(dev, dev_addr);
1605 ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
1606 mlx4_en_media_change, mlx4_en_media_status);
1607 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
1608 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
1609 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
1610 ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1611 ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
1613 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
1614 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
1616 priv->registered = 1;
1617 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1622 mlx4_en_destroy_netdev(dev);