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);
156 static void mlx4_en_stop_port(struct net_device *dev)
158 struct mlx4_en_priv *priv = netdev_priv(dev);
160 queue_work(priv->mdev->workqueue, &priv->stop_port_task);
163 static void mlx4_en_start_port(struct net_device *dev)
165 struct mlx4_en_priv *priv = netdev_priv(dev);
167 queue_work(priv->mdev->workqueue, &priv->start_port_task);
170 static void mlx4_en_set_multicast(struct net_device *dev)
172 struct mlx4_en_priv *priv = netdev_priv(dev);
177 queue_work(priv->mdev->workqueue, &priv->mcast_task);
180 static void mlx4_en_do_set_multicast(struct work_struct *work)
182 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
184 struct net_device *dev = priv->dev;
185 struct mlx4_en_dev *mdev = priv->mdev;
188 mutex_lock(&mdev->state_lock);
189 if (!mdev->device_up) {
190 en_dbg(HW, priv, "Card is not up, "
191 "ignoring multicast change.\n");
194 if (!priv->port_up) {
195 en_dbg(HW, priv, "Port is down, "
196 "ignoring multicast change.\n");
201 * Promsicuous mode: disable all filters
204 if (dev->if_flags & IFF_PROMISC) {
205 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
206 priv->flags |= MLX4_EN_FLAG_PROMISC;
208 /* Enable promiscouos mode */
209 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
212 en_err(priv, "Failed enabling "
213 "promiscous mode\n");
215 /* Disable port multicast filter (unconditionally) */
216 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
217 0, MLX4_MCAST_DISABLE);
219 en_err(priv, "Failed disabling "
220 "multicast filter\n");
222 /* Disable port VLAN filter */
223 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, NULL);
225 en_err(priv, "Failed disabling VLAN filter\n");
231 * Not in promiscous mode
234 if (priv->flags & MLX4_EN_FLAG_PROMISC) {
235 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
237 /* Disable promiscouos mode */
238 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
241 en_err(priv, "Failed disabling promiscous mode\n");
243 /* Enable port VLAN filter */
244 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlans);
246 en_err(priv, "Failed enabling VLAN filter\n");
249 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
250 if (dev->if_flags & IFF_ALLMULTI) {
251 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
252 0, MLX4_MCAST_DISABLE);
254 en_err(priv, "Failed disabling multicast filter\n");
260 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
261 0, MLX4_MCAST_DISABLE);
263 en_err(priv, "Failed disabling multicast filter\n");
265 /* Flush mcast filter and init it with broadcast address */
266 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
267 1, MLX4_MCAST_CONFIG);
269 /* Update multicast list - we cache all addresses so they won't
270 * change while HW is updated holding the command semaphor */
271 mccount = mlx4_en_cache_mclist(dev, &mcaddr);
272 for (i = 0; i < mccount; i++)
273 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
274 mcaddr[i], 0, MLX4_MCAST_CONFIG);
275 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
276 0, MLX4_MCAST_ENABLE);
278 en_err(priv, "Failed enabling multicast filter\n");
283 mutex_unlock(&mdev->state_lock);
286 #ifdef CONFIG_NET_POLL_CONTROLLER
287 static void mlx4_en_netpoll(struct net_device *dev)
289 struct mlx4_en_priv *priv = netdev_priv(dev);
290 struct mlx4_en_cq *cq;
294 for (i = 0; i < priv->rx_ring_num; i++) {
295 cq = &priv->rx_cq[i];
296 spin_lock_irqsave(&cq->lock, flags);
297 napi_synchronize(&cq->napi);
298 mlx4_en_process_rx_cq(dev, cq, 0);
299 spin_unlock_irqrestore(&cq->lock, flags);
304 static void mlx4_en_watchdog_timeout(void *arg)
306 struct mlx4_en_priv *priv = arg;
307 struct mlx4_en_dev *mdev = priv->mdev;
309 en_dbg(DRV, priv, "Scheduling watchdog\n");
310 queue_work(mdev->workqueue, &priv->watchdog_task);
312 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
313 mlx4_en_watchdog_timeout, priv);
317 /* XXX This clears user settings in too many cases. */
318 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
320 struct mlx4_en_cq *cq;
323 /* If we haven't received a specific coalescing setting
324 * (module param), we set the moderation paramters as follows:
325 * - moder_cnt is set to the number of mtu sized packets to
326 * satisfy our coelsing target.
327 * - moder_time is set to a fixed value.
329 priv->rx_frames = MLX4_EN_RX_COAL_TARGET / priv->dev->if_mtu + 1;
330 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
331 en_dbg(INTR, priv, "Default coalesing params for mtu:%ld - "
332 "rx_frames:%d rx_usecs:%d\n",
333 priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
335 /* Setup cq moderation params */
336 for (i = 0; i < priv->rx_ring_num; i++) {
337 cq = &priv->rx_cq[i];
338 cq->moder_cnt = priv->rx_frames;
339 cq->moder_time = priv->rx_usecs;
340 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
341 priv->last_moder_packets[i] = 0;
342 priv->last_moder_bytes[i] = 0;
345 for (i = 0; i < priv->tx_ring_num; i++) {
346 cq = &priv->tx_cq[i];
347 cq->moder_cnt = MLX4_EN_TX_COAL_PKTS;
348 cq->moder_time = MLX4_EN_TX_COAL_TIME;
351 /* Reset auto-moderation params */
352 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
353 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
354 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
355 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
356 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
357 priv->adaptive_rx_coal = 1;
358 priv->last_moder_jiffies = 0;
359 priv->last_moder_tx_packets = 0;
362 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
364 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
365 struct mlx4_en_cq *cq;
366 unsigned long packets;
368 unsigned long avg_pkt_size;
369 unsigned long rx_packets;
370 unsigned long rx_bytes;
371 unsigned long rx_pkt_diff;
375 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
377 for (ring = 0; ring < priv->rx_ring_num; ring++) {
378 spin_lock(&priv->stats_lock);
379 rx_packets = priv->rx_ring[ring].packets;
380 rx_bytes = priv->rx_ring[ring].bytes;
381 spin_unlock(&priv->stats_lock);
383 rx_pkt_diff = ((unsigned long) (rx_packets -
384 priv->last_moder_packets[ring]));
385 packets = rx_pkt_diff;
386 rate = packets * HZ / period;
387 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
388 priv->last_moder_bytes[ring])) / packets : 0;
390 /* Apply auto-moderation only when packet rate
391 * exceeds a rate that it matters */
392 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
393 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
394 if (rate < priv->pkt_rate_low ||
395 avg_pkt_size < MLX4_EN_AVG_PKT_SMALL)
396 moder_time = priv->rx_usecs_low;
397 else if (rate > priv->pkt_rate_high)
398 moder_time = priv->rx_usecs_high;
400 moder_time = (rate - priv->pkt_rate_low) *
401 (priv->rx_usecs_high - priv->rx_usecs_low) /
402 (priv->pkt_rate_high - priv->pkt_rate_low) +
405 moder_time = priv->rx_usecs_low;
408 if (moder_time != priv->last_moder_time[ring]) {
409 priv->last_moder_time[ring] = moder_time;
410 cq = &priv->rx_cq[ring];
411 cq->moder_time = moder_time;
412 err = mlx4_en_set_cq_moder(priv, cq);
414 en_err(priv, "Failed modifying moderation "
415 "for cq:%d\n", ring);
417 priv->last_moder_packets[ring] = rx_packets;
418 priv->last_moder_bytes[ring] = rx_bytes;
421 priv->last_moder_jiffies = jiffies;
424 static void mlx4_en_handle_vlans(struct mlx4_en_priv *priv)
426 u8 vlan_register[VLAN_FLTR_SIZE];
427 u8 vlan_unregister[VLAN_FLTR_SIZE];
431 /* cache the vlan data for processing
432 * done under lock to avoid changes during work */
433 spin_lock(&priv->vlan_lock);
434 for (i = 0; i < VLAN_FLTR_SIZE; i++) {
435 vlan_register[i] = priv->vlan_register[i];
436 priv->vlan_register[i] = 0;
437 vlan_unregister[i] = priv->vlan_unregister[i];
438 priv->vlan_unregister[i] = 0;
440 priv->vlgrp_modified = false;
441 spin_unlock(&priv->vlan_lock);
443 /* Configure the vlan filter
444 * The vlgrp is updated with all the vids that need to be allowed */
445 if (mlx4_SET_VLAN_FLTR(priv->mdev->dev, priv->port, priv->vlans))
446 en_err(priv, "Failed configuring VLAN filter\n");
448 /* Configure the VLAN table */
449 for (i = 0; i < VLAN_FLTR_SIZE; i++) {
450 for (j = 0; j < 32; j++) {
452 if (vlan_register[i] & (1 << j))
453 if (mlx4_register_vlan(priv->mdev->dev, priv->port, vid, &idx))
454 en_dbg(HW, priv, "failed registering vlan %d\n", vid);
455 if (vlan_unregister[i] & (1 << j)) {
456 if (!mlx4_find_cached_vlan(priv->mdev->dev, priv->port, vid, &idx))
457 mlx4_unregister_vlan(priv->mdev->dev, priv->port, idx);
459 en_dbg(HW, priv, "could not find vid %d in cache\n", vid);
465 static void mlx4_en_do_get_stats(struct work_struct *work)
467 struct delayed_work *delay = to_delayed_work(work);
468 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
470 struct mlx4_en_dev *mdev = priv->mdev;
473 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
475 en_dbg(HW, priv, "Could not update stats \n");
478 mutex_lock(&mdev->state_lock);
479 if (mdev->device_up) {
481 if (priv->vlgrp_modified)
482 mlx4_en_handle_vlans(priv);
484 mlx4_en_auto_moderation(priv);
487 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
489 mlx4_en_QUERY_PORT(priv->mdev, priv->port);
490 mutex_unlock(&mdev->state_lock);
493 static void mlx4_en_linkstate(struct work_struct *work)
495 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
497 struct mlx4_en_dev *mdev = priv->mdev;
498 int linkstate = priv->link_state;
500 mutex_lock(&mdev->state_lock);
501 /* If observable port state changed set carrier state and
502 * report to system log */
503 if (priv->last_link_state != linkstate) {
504 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
505 if_link_state_change(priv->dev, LINK_STATE_DOWN);
507 en_info(priv, "Link Up\n");
508 if_link_state_change(priv->dev, LINK_STATE_UP);
511 priv->last_link_state = linkstate;
512 mutex_unlock(&mdev->state_lock);
515 static void mlx4_en_lock_and_stop_port(struct work_struct *work)
517 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
519 struct net_device *dev = priv->dev;
520 struct mlx4_en_dev *mdev = priv->mdev;
522 mutex_lock(&mdev->state_lock);
523 mlx4_en_do_stop_port(dev);
524 mutex_unlock(&mdev->state_lock);
527 static void mlx4_en_lock_and_start_port(struct work_struct *work)
529 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
531 struct net_device *dev = priv->dev;
532 struct mlx4_en_dev *mdev = priv->mdev;
534 mutex_lock(&mdev->state_lock);
535 mlx4_en_do_start_port(dev);
536 mutex_unlock(&mdev->state_lock);
539 int mlx4_en_do_start_port(struct net_device *dev)
541 struct mlx4_en_priv *priv = netdev_priv(dev);
542 struct mlx4_en_dev *mdev = priv->mdev;
543 struct mlx4_en_cq *cq;
544 struct mlx4_en_tx_ring *tx_ring;
553 en_dbg(DRV, priv, "start port called while port already up\n");
557 /* Calculate Rx buf size */
558 dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
559 mlx4_en_calc_rx_buf(dev);
560 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
562 /* Configure rx cq's and rings */
563 err = mlx4_en_activate_rx_rings(priv);
565 en_err(priv, "Failed to activate RX rings\n");
569 for (i = 0; i < priv->rx_ring_num; i++) {
570 cq = &priv->rx_cq[i];
572 err = mlx4_en_activate_cq(priv, cq);
574 en_err(priv, "Failed activating Rx CQ\n");
577 for (j = 0; j < cq->size; j++)
578 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
579 err = mlx4_en_set_cq_moder(priv, cq);
581 en_err(priv, "Failed setting cq moderation parameters");
582 mlx4_en_deactivate_cq(priv, cq);
585 mlx4_en_arm_cq(priv, cq);
586 priv->rx_ring[i].cqn = cq->mcq.cqn;
590 err = mlx4_en_config_rss_steer(priv);
592 en_err(priv, "Failed configuring rss steering\n");
596 /* Configure tx cq's and rings */
597 for (i = 0; i < priv->tx_ring_num; i++) {
599 cq = &priv->tx_cq[i];
600 err = mlx4_en_activate_cq(priv, cq);
602 en_err(priv, "Failed allocating Tx CQ\n");
605 err = mlx4_en_set_cq_moder(priv, cq);
607 en_err(priv, "Failed setting cq moderation parameters");
608 mlx4_en_deactivate_cq(priv, cq);
611 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
612 cq->buf->wqe_index = cpu_to_be16(0xffff);
615 tx_ring = &priv->tx_ring[i];
616 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn);
618 en_err(priv, "Failed allocating Tx ring\n");
619 mlx4_en_deactivate_cq(priv, cq);
622 /* Set initial ownership of all Tx TXBBs to SW (1) */
623 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
624 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
629 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
630 priv->rx_mb_size + ETHER_CRC_LEN,
631 priv->prof->tx_pause,
633 priv->prof->rx_pause,
636 en_err(priv, "Failed setting port general configurations "
637 "for port %d, with error %d\n", priv->port, err);
640 /* Set default qp number */
641 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
643 en_err(priv, "Failed setting default qp numbers\n");
646 /* Set port mac number */
647 en_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
648 err = mlx4_register_mac(mdev->dev, priv->port,
649 mlx4_en_mac_to_u64(IF_LLADDR(dev)));
651 en_err(priv, "Failed setting port mac err=%d\n", err);
654 mdev->mac_removed[priv->port] = 0;
657 en_dbg(HW, priv, "Initializing port\n");
658 err = mlx4_INIT_PORT(mdev->dev, priv->port);
660 en_err(priv, "Failed Initializing port\n");
664 /* Set the various hardware offload abilities */
665 dev->if_hwassist = 0;
666 if (dev->if_capenable & IFCAP_TSO4)
667 dev->if_hwassist |= CSUM_TSO;
668 if (dev->if_capenable & IFCAP_TXCSUM)
669 dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
670 if (dev->if_capenable & IFCAP_RXCSUM)
675 err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
677 en_err(priv, "Failed to get WoL info, unable to modify\n");
680 if (dev->if_capenable & IFCAP_WOL_MAGIC) {
681 config |= MLX4_EN_WOL_DO_MODIFY | MLX4_EN_WOL_ENABLED |
684 config &= ~(MLX4_EN_WOL_ENABLED | MLX4_EN_WOL_MAGIC);
685 config |= MLX4_EN_WOL_DO_MODIFY;
688 err = mlx4_wol_write(priv->mdev->dev, config, priv->port);
690 en_err(priv, "Failed to set WoL information\n");
694 priv->port_up = true;
696 /* Populate multicast list */
697 mlx4_en_set_multicast(dev);
699 /* Enable the queues. */
700 dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
701 dev->if_drv_flags |= IFF_DRV_RUNNING;
703 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
704 mlx4_en_watchdog_timeout, priv);
710 mlx4_CLOSE_PORT(mdev->dev, priv->port);
713 mlx4_unregister_mac(mdev->dev, priv->port, priv->mac);
716 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
717 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
720 mlx4_en_release_rss_steer(priv);
723 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
724 for (i = 0; i < priv->rx_ring_num; i++)
725 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
727 return err; /* need to close devices */
731 void mlx4_en_do_stop_port(struct net_device *dev)
733 struct mlx4_en_priv *priv = netdev_priv(dev);
734 struct mlx4_en_dev *mdev = priv->mdev;
737 if (!priv->port_up) {
738 en_dbg(DRV, priv, "stop port called while port already down\n");
742 /* Set port as not active */
743 priv->port_up = false;
745 /* Unregister Mac address for the port */
746 mlx4_unregister_mac(mdev->dev, priv->port, priv->mac);
747 mdev->mac_removed[priv->port] = 1;
750 for (i = 0; i < priv->tx_ring_num; i++) {
751 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
752 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
756 for (i = 0; i < priv->tx_ring_num; i++)
757 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
760 mlx4_en_release_rss_steer(priv);
763 for (i = 0; i < priv->rx_ring_num; i++) {
764 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
765 mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
769 mlx4_CLOSE_PORT(mdev->dev, priv->port);
771 callout_stop(&priv->watchdog_timer);
773 dev->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
776 static void mlx4_en_restart(struct work_struct *work)
778 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
780 struct mlx4_en_dev *mdev = priv->mdev;
781 struct net_device *dev = priv->dev;
782 struct mlx4_en_tx_ring *ring;
785 if (priv->blocked == 0 || priv->port_up == 0)
787 for (i = 0; i < priv->tx_ring_num; i++) {
788 ring = &priv->tx_ring[i];
790 ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks)
796 priv->port_stats.tx_timeout++;
797 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
799 mutex_lock(&mdev->state_lock);
801 mlx4_en_do_stop_port(dev);
802 if (mlx4_en_do_start_port(dev))
803 en_err(priv, "Failed restarting port %d\n", priv->port);
805 mutex_unlock(&mdev->state_lock);
810 mlx4_en_init(void *arg)
812 struct mlx4_en_priv *priv;
813 struct mlx4_en_dev *mdev;
817 mutex_lock(&mdev->state_lock);
818 mlx4_en_init_locked(priv);
819 mutex_unlock(&mdev->state_lock);
823 mlx4_en_init_locked(struct mlx4_en_priv *priv)
826 struct mlx4_en_dev *mdev;
832 if (dev->if_drv_flags & IFF_DRV_RUNNING)
833 mlx4_en_do_stop_port(dev);
835 if (!mdev->device_up) {
836 en_err(priv, "Cannot open - device down/disabled\n");
840 /* Reset HW statistics and performance counters */
841 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
842 en_dbg(HW, priv, "Failed dumping statistics\n");
844 memset(&priv->pstats, 0, sizeof(priv->pstats));
846 for (i = 0; i < priv->tx_ring_num; i++) {
847 priv->tx_ring[i].bytes = 0;
848 priv->tx_ring[i].packets = 0;
850 for (i = 0; i < priv->rx_ring_num; i++) {
851 priv->rx_ring[i].bytes = 0;
852 priv->rx_ring[i].packets = 0;
855 mlx4_en_set_default_moderation(priv);
856 if (mlx4_en_do_start_port(dev))
857 en_err(priv, "Failed starting port:%d\n", priv->port);
860 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
864 for (i = 0; i < priv->tx_ring_num; i++) {
865 if (priv->tx_ring[i].tx_info)
866 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
867 if (priv->tx_cq[i].buf)
868 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
871 for (i = 0; i < priv->rx_ring_num; i++) {
872 if (priv->rx_ring[i].rx_info)
873 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
874 if (priv->rx_cq[i].buf)
875 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
877 /* Free the stats tree when we resize the rings. */
879 sysctl_ctx_free(&priv->stat_ctx);
883 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
885 struct mlx4_en_port_profile *prof = priv->prof;
888 /* Create tx Rings */
889 for (i = 0; i < priv->tx_ring_num; i++) {
890 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
891 prof->tx_ring_size, i, TX))
894 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
895 prof->tx_ring_size, TXBB_SIZE))
899 /* Create rx Rings */
900 for (i = 0; i < priv->rx_ring_num; i++) {
901 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
902 prof->rx_ring_size, i, RX))
905 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
910 /* Re-create stat sysctls in case the number of rings changed. */
911 mlx4_en_sysctl_stat(priv);
913 /* Populate Tx priority mappings */
914 mlx4_en_set_prio_map(priv, priv->tx_prio_map,
915 priv->tx_ring_num - MLX4_EN_NUM_HASH_RINGS);
920 en_err(priv, "Failed to allocate NIC resources\n");
925 void mlx4_en_destroy_netdev(struct net_device *dev)
927 struct mlx4_en_priv *priv = netdev_priv(dev);
928 struct mlx4_en_dev *mdev = priv->mdev;
930 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
932 if (priv->vlan_attach != NULL)
933 EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
934 if (priv->vlan_detach != NULL)
935 EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
937 /* Unregister device - this will close the port if it was up */
938 if (priv->registered)
942 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
944 mutex_lock(&mdev->state_lock);
945 mlx4_en_do_stop_port(dev);
946 mutex_unlock(&mdev->state_lock);
948 cancel_delayed_work(&priv->stats_task);
949 /* flush any pending task for this netdev */
950 flush_workqueue(mdev->workqueue);
951 callout_drain(&priv->watchdog_timer);
953 /* Detach the netdev so tasks would not attempt to access it */
954 mutex_lock(&mdev->state_lock);
955 mdev->pndev[priv->port] = NULL;
956 mutex_unlock(&mdev->state_lock);
958 mlx4_en_free_resources(priv);
961 sysctl_ctx_free(&priv->conf_ctx);
963 mtx_destroy(&priv->stats_lock.m);
964 mtx_destroy(&priv->vlan_lock.m);
969 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
971 struct mlx4_en_priv *priv = netdev_priv(dev);
972 struct mlx4_en_dev *mdev = priv->mdev;
975 en_dbg(DRV, priv, "Change MTU called - current:%ld new:%d\n",
976 dev->if_mtu, new_mtu);
978 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
979 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
982 mutex_lock(&mdev->state_lock);
983 dev->if_mtu = new_mtu;
984 if (dev->if_drv_flags & IFF_DRV_RUNNING) {
985 if (!mdev->device_up) {
986 /* NIC is probably restarting - let watchdog task reset
988 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
990 mlx4_en_do_stop_port(dev);
991 mlx4_en_set_default_moderation(priv);
992 err = mlx4_en_do_start_port(dev);
994 en_err(priv, "Failed restarting port:%d\n",
996 queue_work(mdev->workqueue, &priv->watchdog_task);
1000 mutex_unlock(&mdev->state_lock);
1004 static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
1010 if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
1013 * [ShaharK] mlx4_en_QUERY_PORT sleeps and cannot be called under a
1014 * non-sleepable lock.
1015 * I moved it to the periodic mlx4_en_do_get_stats.
1016 if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
1020 trans_type = priv->port_state.transciver;
1021 /* XXX I don't know all of the transceiver values. */
1022 switch (priv->port_state.link_speed) {
1024 active |= IFM_1000_T;
1027 if (trans_type > 0 && trans_type <= 0xC)
1028 active |= IFM_10G_SR;
1029 else if (trans_type == 0x80 || trans_type == 0)
1030 active |= IFM_10G_CX4;
1033 active |= IFM_40G_CR4;
1036 if (priv->prof->tx_pause)
1037 active |= IFM_ETH_TXPAUSE;
1038 if (priv->prof->rx_pause)
1039 active |= IFM_ETH_RXPAUSE;
1045 static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
1047 struct mlx4_en_priv *priv;
1049 priv = dev->if_softc;
1050 ifmr->ifm_status = IFM_AVALID;
1051 if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
1052 ifmr->ifm_status |= IFM_ACTIVE;
1053 ifmr->ifm_active = mlx4_en_calc_media(priv);
1058 static int mlx4_en_media_change(struct ifnet *dev)
1060 struct mlx4_en_priv *priv;
1061 struct ifmedia *ifm;
1066 priv = dev->if_softc;
1068 rxpause = txpause = 0;
1071 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1073 switch (IFM_SUBTYPE(ifm->ifm_media)) {
1079 if (IFM_SUBTYPE(ifm->ifm_media) ==
1080 IFM_SUBTYPE(mlx4_en_calc_media(priv)) &&
1081 (ifm->ifm_media & IFM_FDX))
1085 printf("%s: Only auto media type\n", if_name(dev));
1088 /* Allow user to set/clear pause */
1089 if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
1091 if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
1093 if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
1094 priv->prof->tx_pause = txpause;
1095 priv->prof->rx_pause = rxpause;
1096 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1097 priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
1098 priv->prof->tx_ppp, priv->prof->rx_pause,
1099 priv->prof->rx_ppp);
1104 static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
1106 struct mlx4_en_priv *priv;
1107 struct mlx4_en_dev *mdev;
1114 priv = dev->if_softc;
1116 ifr = (struct ifreq *) data;
1119 error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
1122 if (dev->if_flags & IFF_UP) {
1123 if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0)
1124 mlx4_en_start_port(dev);
1126 mlx4_en_set_multicast(dev);
1128 if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1129 mlx4_en_stop_port(dev);
1130 if_link_state_change(dev, LINK_STATE_DOWN);
1132 * Since mlx4_en_stop_port is defered we
1133 * have to wait till it's finished.
1135 for (int count=0; count<10; count++) {
1136 if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1147 mlx4_en_set_multicast(dev);
1151 error = ifmedia_ioctl(dev, ifr, &priv->media, command);
1154 mutex_lock(&mdev->state_lock);
1155 mask = ifr->ifr_reqcap ^ dev->if_capenable;
1156 if (mask & IFCAP_HWCSUM)
1157 dev->if_capenable ^= IFCAP_HWCSUM;
1158 if (mask & IFCAP_TSO4)
1159 dev->if_capenable ^= IFCAP_TSO4;
1160 if (mask & IFCAP_LRO)
1161 dev->if_capenable ^= IFCAP_LRO;
1162 if (mask & IFCAP_VLAN_HWTAGGING)
1163 dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1164 if (mask & IFCAP_VLAN_HWFILTER)
1165 dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
1166 if (mask & IFCAP_WOL_MAGIC)
1167 dev->if_capenable ^= IFCAP_WOL_MAGIC;
1168 if (dev->if_drv_flags & IFF_DRV_RUNNING)
1169 mlx4_en_init_locked(priv);
1170 mutex_unlock(&mdev->state_lock);
1171 VLAN_CAPABILITIES(dev);
1174 error = ether_ioctl(dev, command, data);
1181 static int mlx4_en_set_ring_size(struct net_device *dev,
1182 int rx_size, int tx_size)
1184 struct mlx4_en_priv *priv = netdev_priv(dev);
1185 struct mlx4_en_dev *mdev = priv->mdev;
1189 rx_size = roundup_pow_of_two(rx_size);
1190 rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
1191 rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
1192 tx_size = roundup_pow_of_two(tx_size);
1193 tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
1194 tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
1196 if (rx_size == (priv->port_up ?
1197 priv->rx_ring[0].actual_size : priv->rx_ring[0].size) &&
1198 tx_size == priv->tx_ring[0].size)
1201 mutex_lock(&mdev->state_lock);
1202 if (priv->port_up) {
1204 mlx4_en_do_stop_port(dev);
1206 mlx4_en_free_resources(priv);
1207 priv->prof->tx_ring_size = tx_size;
1208 priv->prof->rx_ring_size = rx_size;
1209 err = mlx4_en_alloc_resources(priv);
1211 en_err(priv, "Failed reallocating port resources\n");
1215 err = mlx4_en_do_start_port(dev);
1217 en_err(priv, "Failed starting port\n");
1220 mutex_unlock(&mdev->state_lock);
1224 static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
1226 struct mlx4_en_priv *priv;
1231 size = priv->prof->rx_ring_size;
1232 error = sysctl_handle_int(oidp, &size, 0, req);
1233 if (error || !req->newptr)
1235 error = -mlx4_en_set_ring_size(priv->dev, size,
1236 priv->prof->tx_ring_size);
1241 static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
1243 struct mlx4_en_priv *priv;
1248 size = priv->prof->tx_ring_size;
1249 error = sysctl_handle_int(oidp, &size, 0, req);
1250 if (error || !req->newptr)
1252 error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
1258 static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
1260 struct mlx4_en_priv *priv;
1265 ppp = priv->prof->tx_ppp;
1266 error = sysctl_handle_int(oidp, &ppp, 0, req);
1267 if (error || !req->newptr)
1269 if (ppp > 0xff || ppp < 0)
1271 priv->prof->tx_ppp = ppp;
1272 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1273 priv->rx_mb_size + ETHER_CRC_LEN,
1274 priv->prof->tx_pause,
1276 priv->prof->rx_pause,
1277 priv->prof->rx_ppp);
1282 static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
1284 struct mlx4_en_priv *priv;
1285 struct mlx4_en_dev *mdev;
1294 ppp = priv->prof->rx_ppp;
1295 error = sysctl_handle_int(oidp, &ppp, 0, req);
1296 if (error || !req->newptr)
1298 if (ppp > 0xff || ppp < 0)
1300 /* See if we have to change the number of tx queues. */
1301 if (!ppp != !priv->prof->rx_ppp) {
1302 tx_ring_num = MLX4_EN_NUM_HASH_RINGS + 1 +
1303 (!!ppp) * MLX4_EN_NUM_PPP_RINGS;
1304 mutex_lock(&mdev->state_lock);
1305 if (priv->port_up) {
1307 mlx4_en_do_stop_port(priv->dev);
1309 mlx4_en_free_resources(priv);
1310 priv->tx_ring_num = tx_ring_num;
1311 priv->prof->rx_ppp = ppp;
1312 error = -mlx4_en_alloc_resources(priv);
1314 en_err(priv, "Failed reallocating port resources\n");
1315 if (error == 0 && port_up) {
1316 error = -mlx4_en_do_start_port(priv->dev);
1318 en_err(priv, "Failed starting port\n");
1320 mutex_unlock(&mdev->state_lock);
1324 priv->prof->rx_ppp = ppp;
1325 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1326 priv->rx_mb_size + ETHER_CRC_LEN,
1327 priv->prof->tx_pause,
1329 priv->prof->rx_pause,
1330 priv->prof->rx_ppp);
1335 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
1337 struct net_device *dev;
1338 struct sysctl_ctx_list *ctx;
1339 struct sysctl_oid *node;
1340 struct sysctl_oid_list *node_list;
1341 struct sysctl_oid *coal;
1342 struct sysctl_oid_list *coal_list;
1345 ctx = &priv->conf_ctx;
1347 sysctl_ctx_init(ctx);
1348 priv->sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
1349 OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
1350 node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
1351 "conf", CTLFLAG_RD, NULL, "Configuration");
1352 node_list = SYSCTL_CHILDREN(node);
1354 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
1355 CTLFLAG_RW, &priv->msg_enable, 0,
1356 "Driver message enable bitfield");
1357 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
1358 CTLTYPE_INT | CTLFLAG_RD, &priv->rx_ring_num, 0,
1359 "Number of receive rings");
1360 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
1361 CTLTYPE_INT | CTLFLAG_RD, &priv->tx_ring_num, 0,
1362 "Number of transmit rings");
1363 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
1364 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1365 mlx4_en_set_rx_ring_size, "I", "Receive ring size");
1366 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
1367 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1368 mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
1369 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "ip_reasm",
1370 CTLFLAG_RW, &priv->ip_reasm, 0,
1371 "Allow reassembly of IP fragments.");
1372 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
1373 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1374 mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
1375 SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
1376 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
1377 mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
1379 /* Add coalescer configuration. */
1380 coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
1381 "coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
1382 coal_list = SYSCTL_CHILDREN(node);
1383 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
1384 CTLFLAG_RW, &priv->pkt_rate_low, 0,
1385 "Packets per-second for minimum delay");
1386 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
1387 CTLFLAG_RW, &priv->rx_usecs_low, 0,
1388 "Minimum RX delay in micro-seconds");
1389 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
1390 CTLFLAG_RW, &priv->pkt_rate_high, 0,
1391 "Packets per-second for maximum delay");
1392 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
1393 CTLFLAG_RW, &priv->rx_usecs_high, 0,
1394 "Maximum RX delay in micro-seconds");
1395 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
1396 CTLFLAG_RW, &priv->sample_interval, 0,
1397 "adaptive frequency in units of HZ ticks");
1398 SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
1399 CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
1400 "Enable adaptive rx coalescing");
1403 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
1405 struct net_device *dev;
1406 struct sysctl_ctx_list *ctx;
1407 struct sysctl_oid *node;
1408 struct sysctl_oid_list *node_list;
1409 struct sysctl_oid *ring_node;
1410 struct sysctl_oid_list *ring_list;
1411 struct mlx4_en_tx_ring *tx_ring;
1412 struct mlx4_en_rx_ring *rx_ring;
1418 ctx = &priv->stat_ctx;
1419 sysctl_ctx_init(ctx);
1420 node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
1421 "stat", CTLFLAG_RD, NULL, "Statistics");
1422 node_list = SYSCTL_CHILDREN(node);
1424 #ifdef MLX4_EN_PERF_STAT
1425 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
1426 &priv->pstats.tx_poll, "TX Poll calls");
1427 SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
1428 &priv->pstats.tx_pktsz_avg, "TX average packet size");
1429 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
1430 &priv->pstats.inflight_avg, "TX average packets in-flight");
1431 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
1432 &priv->pstats.tx_coal_avg, "TX average coalesced completions");
1433 SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
1434 &priv->pstats.rx_coal_avg, "RX average coalesced completions");
1437 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
1438 &priv->port_stats.tso_packets, "TSO packets sent");
1439 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
1440 &priv->port_stats.queue_stopped, "Queue full");
1441 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
1442 &priv->port_stats.wake_queue, "Queue resumed after full");
1443 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
1444 &priv->port_stats.tx_timeout, "Transmit timeouts");
1445 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
1446 &priv->port_stats.rx_alloc_failed, "RX failed to allocate mbuf");
1447 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
1448 &priv->port_stats.rx_chksum_good, "RX checksum offload success");
1449 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
1450 &priv->port_stats.rx_chksum_none, "RX without checksum offload");
1451 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_chksum_offload",
1452 CTLFLAG_RD, &priv->port_stats.tx_chksum_offload,
1453 "TX checksum offloads");
1455 /* Could strdup the names and add in a loop. This is simpler. */
1456 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "broadcast", CTLFLAG_RD,
1457 &priv->pkstats.broadcast, "Broadcast packets");
1458 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio0", CTLFLAG_RD,
1459 &priv->pkstats.tx_prio[0], "TX Priority 0 packets");
1460 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio1", CTLFLAG_RD,
1461 &priv->pkstats.tx_prio[1], "TX Priority 1 packets");
1462 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio2", CTLFLAG_RD,
1463 &priv->pkstats.tx_prio[2], "TX Priority 2 packets");
1464 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio3", CTLFLAG_RD,
1465 &priv->pkstats.tx_prio[3], "TX Priority 3 packets");
1466 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio4", CTLFLAG_RD,
1467 &priv->pkstats.tx_prio[4], "TX Priority 4 packets");
1468 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio5", CTLFLAG_RD,
1469 &priv->pkstats.tx_prio[5], "TX Priority 5 packets");
1470 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio6", CTLFLAG_RD,
1471 &priv->pkstats.tx_prio[6], "TX Priority 6 packets");
1472 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio7", CTLFLAG_RD,
1473 &priv->pkstats.tx_prio[7], "TX Priority 7 packets");
1474 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio0", CTLFLAG_RD,
1475 &priv->pkstats.rx_prio[0], "RX Priority 0 packets");
1476 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio1", CTLFLAG_RD,
1477 &priv->pkstats.rx_prio[1], "RX Priority 1 packets");
1478 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio2", CTLFLAG_RD,
1479 &priv->pkstats.rx_prio[2], "RX Priority 2 packets");
1480 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio3", CTLFLAG_RD,
1481 &priv->pkstats.rx_prio[3], "RX Priority 3 packets");
1482 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio4", CTLFLAG_RD,
1483 &priv->pkstats.rx_prio[4], "RX Priority 4 packets");
1484 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio5", CTLFLAG_RD,
1485 &priv->pkstats.rx_prio[5], "RX Priority 5 packets");
1486 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio6", CTLFLAG_RD,
1487 &priv->pkstats.rx_prio[6], "RX Priority 6 packets");
1488 SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio7", CTLFLAG_RD,
1489 &priv->pkstats.rx_prio[7], "RX Priority 7 packets");
1491 for (i = 0; i < priv->tx_ring_num; i++) {
1492 tx_ring = &priv->tx_ring[i];
1493 snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
1494 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
1495 CTLFLAG_RD, NULL, "TX Ring");
1496 ring_list = SYSCTL_CHILDREN(ring_node);
1497 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
1498 CTLFLAG_RD, &tx_ring->packets, "TX packets");
1499 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
1500 CTLFLAG_RD, &tx_ring->bytes, "TX bytes");
1501 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
1502 CTLFLAG_RD, &tx_ring->errors, "TX soft errors");
1505 for (i = 0; i < priv->rx_ring_num; i++) {
1506 rx_ring = &priv->rx_ring[i];
1507 snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
1508 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
1509 CTLFLAG_RD, NULL, "RX Ring");
1510 ring_list = SYSCTL_CHILDREN(ring_node);
1511 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
1512 CTLFLAG_RD, &rx_ring->packets, "RX packets");
1513 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
1514 CTLFLAG_RD, &rx_ring->bytes, "RX bytes");
1515 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
1516 CTLFLAG_RD, &rx_ring->errors, "RX soft errors");
1517 SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_queued",
1518 CTLFLAG_RD, &rx_ring->lro.lro_queued, 0, "LRO Queued");
1519 SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_flushed",
1520 CTLFLAG_RD, &rx_ring->lro.lro_flushed, 0, "LRO Flushed");
1524 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
1525 struct mlx4_en_port_profile *prof)
1527 static volatile int mlx4_en_unit;
1528 struct net_device *dev;
1529 struct mlx4_en_priv *priv;
1530 uint8_t dev_addr[ETHER_ADDR_LEN];
1534 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1535 dev = priv->dev = if_alloc(IFT_ETHER);
1537 mlx4_err(mdev, "Net device allocation failed\n");
1541 dev->if_softc = priv;
1542 if_initname(dev, "mlxen", atomic_fetchadd_int(&mlx4_en_unit, 1));
1543 dev->if_mtu = ETHERMTU;
1544 dev->if_baudrate = 1000000000;
1545 dev->if_init = mlx4_en_init;
1546 dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1547 dev->if_ioctl = mlx4_en_ioctl;
1548 dev->if_transmit = mlx4_en_transmit;
1549 dev->if_qflush = mlx4_en_qflush;
1550 dev->if_snd.ifq_maxlen = prof->tx_ring_size;
1553 * Initialize driver private data
1559 priv->port_up = false;
1561 priv->flags = prof->flags;
1562 priv->tx_ring_num = prof->tx_ring_num;
1563 priv->rx_ring_num = prof->rx_ring_num;
1564 priv->mac_index = -1;
1565 priv->msg_enable = MLX4_EN_MSG_LEVEL;
1566 priv->ip_reasm = priv->mdev->profile.ip_reasm;
1567 mtx_init(&priv->stats_lock.m, "mlx4 stats", NULL, MTX_DEF);
1568 mtx_init(&priv->vlan_lock.m, "mlx4 vlan", NULL, MTX_DEF);
1569 INIT_WORK(&priv->start_port_task, mlx4_en_lock_and_start_port);
1570 INIT_WORK(&priv->stop_port_task, mlx4_en_lock_and_stop_port);
1571 INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
1572 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
1573 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
1574 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
1575 callout_init(&priv->watchdog_timer, 1);
1577 /* Query for default mac and max mtu */
1578 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
1579 priv->mac = mdev->dev->caps.def_mac[priv->port];
1581 if (ILLEGAL_MAC(priv->mac)) {
1582 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
1583 priv->port, priv->mac);
1588 mlx4_en_sysctl_conf(priv);
1590 err = mlx4_en_alloc_resources(priv);
1594 /* Allocate page for receive rings */
1595 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
1596 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
1598 en_err(priv, "Failed to allocate page for rx qps\n");
1601 priv->allocated = 1;
1604 * Set driver features
1606 dev->if_capabilities |= IFCAP_RXCSUM | IFCAP_TXCSUM;
1607 dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
1608 dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
1609 dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
1610 if (mdev->LSO_support)
1611 dev->if_capabilities |= IFCAP_TSO4 | IFCAP_VLAN_HWTSO;
1612 if (mdev->profile.num_lro)
1613 dev->if_capabilities |= IFCAP_LRO;
1614 dev->if_capenable = dev->if_capabilities;
1616 * Setup wake-on-lan.
1619 if (priv->mdev->dev->caps.wol) {
1621 if (mlx4_wol_read(priv->mdev->dev, &config, priv->port) == 0) {
1622 if (config & MLX4_EN_WOL_MAGIC)
1623 dev->if_capabilities |= IFCAP_WOL_MAGIC;
1624 if (config & MLX4_EN_WOL_ENABLED)
1625 dev->if_capenable |= IFCAP_WOL_MAGIC;
1630 /* Register for VLAN events */
1631 priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
1632 mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
1633 priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
1634 mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
1636 mdev->pndev[priv->port] = dev;
1638 priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
1639 if_link_state_change(dev, LINK_STATE_DOWN);
1641 /* Set default MAC */
1642 for (i = 0; i < ETHER_ADDR_LEN; i++)
1643 dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
1645 ether_ifattach(dev, dev_addr);
1646 ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
1647 mlx4_en_media_change, mlx4_en_media_status);
1648 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
1649 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
1650 ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
1651 ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1652 ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
1654 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
1655 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
1657 priv->registered = 1;
1658 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1663 mlx4_en_destroy_netdev(dev);