2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/etherdevice.h>
35 #include <linux/tcp.h>
36 #include <linux/if_vlan.h>
37 #include <linux/delay.h>
38 #include <linux/slab.h>
39 #include <linux/hash.h>
42 #include <linux/mlx4/driver.h>
43 #include <linux/mlx4/device.h>
44 #include <linux/mlx4/cmd.h>
45 #include <linux/mlx4/cq.h>
50 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
52 struct mlx4_en_priv *priv = netdev_priv(dev);
54 unsigned int offset = 0;
56 if (up && up != MLX4_EN_NUM_UP)
59 netdev_set_num_tc(dev, up);
61 /* Partition Tx queues evenly amongst UP's */
62 for (i = 0; i < up; i++) {
63 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
64 offset += priv->num_tx_rings_p_up;
70 #ifdef CONFIG_RFS_ACCEL
72 struct mlx4_en_filter {
73 struct list_head next;
74 struct work_struct work;
82 struct mlx4_en_priv *priv;
83 u32 flow_id; /* RFS infrastructure id */
84 int id; /* mlx4_en driver id */
85 u64 reg_id; /* Flow steering API id */
86 u8 activated; /* Used to prevent expiry before filter
89 struct hlist_node filter_chain;
92 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
94 static void mlx4_en_filter_work(struct work_struct *work)
96 struct mlx4_en_filter *filter = container_of(work,
97 struct mlx4_en_filter,
99 struct mlx4_en_priv *priv = filter->priv;
100 struct mlx4_spec_list spec_tcp = {
101 .id = MLX4_NET_TRANS_RULE_ID_TCP,
104 .dst_port = filter->dst_port,
105 .dst_port_msk = (__force __be16)-1,
106 .src_port = filter->src_port,
107 .src_port_msk = (__force __be16)-1,
111 struct mlx4_spec_list spec_ip = {
112 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
115 .dst_ip = filter->dst_ip,
116 .dst_ip_msk = (__force __be32)-1,
117 .src_ip = filter->src_ip,
118 .src_ip_msk = (__force __be32)-1,
122 struct mlx4_spec_list spec_eth = {
123 .id = MLX4_NET_TRANS_RULE_ID_ETH,
125 struct mlx4_net_trans_rule rule = {
126 .list = LIST_HEAD_INIT(rule.list),
127 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
130 .promisc_mode = MLX4_FS_REGULAR,
132 .priority = MLX4_DOMAIN_RFS,
135 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
137 list_add_tail(&spec_eth.list, &rule.list);
138 list_add_tail(&spec_ip.list, &rule.list);
139 list_add_tail(&spec_tcp.list, &rule.list);
141 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
142 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
143 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
145 filter->activated = 0;
147 if (filter->reg_id) {
148 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
149 if (rc && rc != -ENOENT)
150 en_err(priv, "Error detaching flow. rc = %d\n", rc);
153 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
155 en_err(priv, "Error attaching flow. err = %d\n", rc);
157 mlx4_en_filter_rfs_expire(priv);
159 filter->activated = 1;
162 static inline struct hlist_head *
163 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
164 __be16 src_port, __be16 dst_port)
169 l = (__force unsigned long)src_port |
170 ((__force unsigned long)dst_port << 2);
171 l ^= (__force unsigned long)(src_ip ^ dst_ip);
173 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
175 return &priv->filter_hash[bucket_idx];
178 static struct mlx4_en_filter *
179 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
180 __be32 dst_ip, __be16 src_port, __be16 dst_port,
183 struct mlx4_en_filter *filter = NULL;
185 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
190 filter->rxq_index = rxq_index;
191 INIT_WORK(&filter->work, mlx4_en_filter_work);
193 filter->src_ip = src_ip;
194 filter->dst_ip = dst_ip;
195 filter->src_port = src_port;
196 filter->dst_port = dst_port;
198 filter->flow_id = flow_id;
200 filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
202 list_add_tail(&filter->next, &priv->filters);
203 hlist_add_head(&filter->filter_chain,
204 filter_hash_bucket(priv, src_ip, dst_ip, src_port,
210 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
212 struct mlx4_en_priv *priv = filter->priv;
215 list_del(&filter->next);
217 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
218 if (rc && rc != -ENOENT)
219 en_err(priv, "Error detaching flow. rc = %d\n", rc);
224 static inline struct mlx4_en_filter *
225 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
226 __be16 src_port, __be16 dst_port)
228 struct mlx4_en_filter *filter;
229 struct mlx4_en_filter *ret = NULL;
231 hlist_for_each_entry(filter,
232 filter_hash_bucket(priv, src_ip, dst_ip,
235 if (filter->src_ip == src_ip &&
236 filter->dst_ip == dst_ip &&
237 filter->src_port == src_port &&
238 filter->dst_port == dst_port) {
248 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
249 u16 rxq_index, u32 flow_id)
251 struct mlx4_en_priv *priv = netdev_priv(net_dev);
252 struct mlx4_en_filter *filter;
253 const struct iphdr *ip;
259 int nhoff = skb_network_offset(skb);
262 if (skb->protocol != htons(ETH_P_IP))
263 return -EPROTONOSUPPORT;
265 ip = (const struct iphdr *)(skb->data + nhoff);
266 if (ip_is_fragment(ip))
267 return -EPROTONOSUPPORT;
269 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
276 if (ip->protocol != IPPROTO_TCP)
277 return -EPROTONOSUPPORT;
279 spin_lock_bh(&priv->filters_lock);
280 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, src_port, dst_port);
282 if (filter->rxq_index == rxq_index)
285 filter->rxq_index = rxq_index;
287 filter = mlx4_en_filter_alloc(priv, rxq_index,
289 src_port, dst_port, flow_id);
296 queue_work(priv->mdev->workqueue, &filter->work);
301 spin_unlock_bh(&priv->filters_lock);
306 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv,
307 struct mlx4_en_rx_ring *rx_ring)
309 struct mlx4_en_filter *filter, *tmp;
312 spin_lock_bh(&priv->filters_lock);
313 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
314 list_move(&filter->next, &del_list);
315 hlist_del(&filter->filter_chain);
317 spin_unlock_bh(&priv->filters_lock);
319 list_for_each_entry_safe(filter, tmp, &del_list, next) {
320 cancel_work_sync(&filter->work);
321 mlx4_en_filter_free(filter);
325 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
327 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
331 spin_lock_bh(&priv->filters_lock);
332 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
333 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
336 if (filter->activated &&
337 !work_pending(&filter->work) &&
338 rps_may_expire_flow(priv->dev,
339 filter->rxq_index, filter->flow_id,
341 list_move(&filter->next, &del_list);
342 hlist_del(&filter->filter_chain);
344 last_filter = filter;
349 if (last_filter && (&last_filter->next != priv->filters.next))
350 list_move(&priv->filters, &last_filter->next);
352 spin_unlock_bh(&priv->filters_lock);
354 list_for_each_entry_safe(filter, tmp, &del_list, next)
355 mlx4_en_filter_free(filter);
359 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
360 __be16 proto, u16 vid)
362 struct mlx4_en_priv *priv = netdev_priv(dev);
363 struct mlx4_en_dev *mdev = priv->mdev;
367 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
369 set_bit(vid, priv->active_vlans);
371 /* Add VID to port VLAN filter */
372 mutex_lock(&mdev->state_lock);
373 if (mdev->device_up && priv->port_up) {
374 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
376 en_err(priv, "Failed configuring VLAN filter\n");
378 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
379 en_err(priv, "failed adding vlan %d\n", vid);
380 mutex_unlock(&mdev->state_lock);
385 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
386 __be16 proto, u16 vid)
388 struct mlx4_en_priv *priv = netdev_priv(dev);
389 struct mlx4_en_dev *mdev = priv->mdev;
393 en_dbg(HW, priv, "Killing VID:%d\n", vid);
395 clear_bit(vid, priv->active_vlans);
397 /* Remove VID from port VLAN filter */
398 mutex_lock(&mdev->state_lock);
399 if (!mlx4_find_cached_vlan(mdev->dev, priv->port, vid, &idx))
400 mlx4_unregister_vlan(mdev->dev, priv->port, idx);
402 en_err(priv, "could not find vid %d in cache\n", vid);
404 if (mdev->device_up && priv->port_up) {
405 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
407 en_err(priv, "Failed configuring VLAN filter\n");
409 mutex_unlock(&mdev->state_lock);
414 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
417 for (i = ETH_ALEN - 1; i >= 0; --i) {
418 dst_mac[i] = src_mac & 0xff;
421 memset(&dst_mac[ETH_ALEN], 0, 2);
424 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
425 unsigned char *mac, int *qpn, u64 *reg_id)
427 struct mlx4_en_dev *mdev = priv->mdev;
428 struct mlx4_dev *dev = mdev->dev;
431 switch (dev->caps.steering_mode) {
432 case MLX4_STEERING_MODE_B0: {
437 memcpy(&gid[10], mac, ETH_ALEN);
440 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
443 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
444 struct mlx4_spec_list spec_eth = { {NULL} };
445 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
447 struct mlx4_net_trans_rule rule = {
448 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
451 .promisc_mode = MLX4_FS_REGULAR,
452 .priority = MLX4_DOMAIN_NIC,
455 rule.port = priv->port;
457 INIT_LIST_HEAD(&rule.list);
459 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
460 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
461 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
462 list_add_tail(&spec_eth.list, &rule.list);
464 err = mlx4_flow_attach(dev, &rule, reg_id);
471 en_warn(priv, "Failed Attaching Unicast\n");
476 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
477 unsigned char *mac, int qpn, u64 reg_id)
479 struct mlx4_en_dev *mdev = priv->mdev;
480 struct mlx4_dev *dev = mdev->dev;
482 switch (dev->caps.steering_mode) {
483 case MLX4_STEERING_MODE_B0: {
488 memcpy(&gid[10], mac, ETH_ALEN);
491 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
494 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
495 mlx4_flow_detach(dev, reg_id);
499 en_err(priv, "Invalid steering mode.\n");
503 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
505 struct mlx4_en_dev *mdev = priv->mdev;
506 struct mlx4_dev *dev = mdev->dev;
507 struct mlx4_mac_entry *entry;
511 int *qpn = &priv->base_qpn;
512 u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
514 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
515 priv->dev->dev_addr);
516 index = mlx4_register_mac(dev, priv->port, mac);
519 en_err(priv, "Failed adding MAC: %pM\n",
520 priv->dev->dev_addr);
524 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
525 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
526 *qpn = base_qpn + index;
530 err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
531 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
533 en_err(priv, "Failed to reserve qp for mac registration\n");
537 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id);
541 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
546 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
547 entry->reg_id = reg_id;
549 hlist_add_head_rcu(&entry->hlist,
550 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
555 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
558 mlx4_qp_release_range(dev, *qpn, 1);
561 mlx4_unregister_mac(dev, priv->port, mac);
565 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
567 struct mlx4_en_dev *mdev = priv->mdev;
568 struct mlx4_dev *dev = mdev->dev;
569 int qpn = priv->base_qpn;
572 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
573 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
574 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
575 priv->dev->dev_addr);
576 mlx4_unregister_mac(dev, priv->port, mac);
578 struct mlx4_mac_entry *entry;
579 struct hlist_node *tmp;
580 struct hlist_head *bucket;
583 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
584 bucket = &priv->mac_hash[i];
585 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
586 mac = mlx4_en_mac_to_u64(entry->mac);
587 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
589 mlx4_en_uc_steer_release(priv, entry->mac,
592 mlx4_unregister_mac(dev, priv->port, mac);
593 hlist_del_rcu(&entry->hlist);
594 kfree_rcu(entry, rcu);
598 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
600 mlx4_qp_release_range(dev, qpn, 1);
601 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
605 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
606 unsigned char *new_mac, unsigned char *prev_mac)
608 struct mlx4_en_dev *mdev = priv->mdev;
609 struct mlx4_dev *dev = mdev->dev;
611 u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac);
613 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
614 struct hlist_head *bucket;
615 unsigned int mac_hash;
616 struct mlx4_mac_entry *entry;
617 struct hlist_node *tmp;
618 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac);
620 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
621 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
622 if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
623 mlx4_en_uc_steer_release(priv, entry->mac,
625 mlx4_unregister_mac(dev, priv->port,
627 hlist_del_rcu(&entry->hlist);
629 memcpy(entry->mac, new_mac, ETH_ALEN);
631 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
632 hlist_add_head_rcu(&entry->hlist,
633 &priv->mac_hash[mac_hash]);
634 mlx4_register_mac(dev, priv->port, new_mac_u64);
635 err = mlx4_en_uc_steer_add(priv, new_mac,
644 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
647 u64 mlx4_en_mac_to_u64(u8 *addr)
652 for (i = 0; i < ETH_ALEN; i++) {
659 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
664 /* Remove old MAC and insert the new one */
665 err = mlx4_en_replace_mac(priv, priv->base_qpn,
666 priv->dev->dev_addr, priv->prev_mac);
668 en_err(priv, "Failed changing HW MAC address\n");
669 memcpy(priv->prev_mac, priv->dev->dev_addr,
670 sizeof(priv->prev_mac));
672 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
677 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
679 struct mlx4_en_priv *priv = netdev_priv(dev);
680 struct mlx4_en_dev *mdev = priv->mdev;
681 struct sockaddr *saddr = addr;
684 if (!is_valid_ether_addr(saddr->sa_data))
685 return -EADDRNOTAVAIL;
687 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
689 mutex_lock(&mdev->state_lock);
690 err = mlx4_en_do_set_mac(priv);
691 mutex_unlock(&mdev->state_lock);
696 static void mlx4_en_clear_list(struct net_device *dev)
698 struct mlx4_en_priv *priv = netdev_priv(dev);
699 struct mlx4_en_mc_list *tmp, *mc_to_del;
701 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
702 list_del(&mc_to_del->list);
707 static void mlx4_en_cache_mclist(struct net_device *dev)
709 struct mlx4_en_priv *priv = netdev_priv(dev);
710 struct netdev_hw_addr *ha;
711 struct mlx4_en_mc_list *tmp;
713 mlx4_en_clear_list(dev);
714 netdev_for_each_mc_addr(ha, dev) {
715 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
717 mlx4_en_clear_list(dev);
720 memcpy(tmp->addr, ha->addr, ETH_ALEN);
721 list_add_tail(&tmp->list, &priv->mc_list);
725 static void update_mclist_flags(struct mlx4_en_priv *priv,
726 struct list_head *dst,
727 struct list_head *src)
729 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
732 /* Find all the entries that should be removed from dst,
733 * These are the entries that are not found in src
735 list_for_each_entry(dst_tmp, dst, list) {
737 list_for_each_entry(src_tmp, src, list) {
738 if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
744 dst_tmp->action = MCLIST_REM;
747 /* Add entries that exist in src but not in dst
748 * mark them as need to add
750 list_for_each_entry(src_tmp, src, list) {
752 list_for_each_entry(dst_tmp, dst, list) {
753 if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
754 dst_tmp->action = MCLIST_NONE;
760 new_mc = kmemdup(src_tmp,
761 sizeof(struct mlx4_en_mc_list),
766 new_mc->action = MCLIST_ADD;
767 list_add_tail(&new_mc->list, dst);
772 static void mlx4_en_set_rx_mode(struct net_device *dev)
774 struct mlx4_en_priv *priv = netdev_priv(dev);
779 queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
782 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
783 struct mlx4_en_dev *mdev)
787 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
788 if (netif_msg_rx_status(priv))
789 en_warn(priv, "Entering promiscuous mode\n");
790 priv->flags |= MLX4_EN_FLAG_PROMISC;
792 /* Enable promiscouos mode */
793 switch (mdev->dev->caps.steering_mode) {
794 case MLX4_STEERING_MODE_DEVICE_MANAGED:
795 err = mlx4_flow_steer_promisc_add(mdev->dev,
798 MLX4_FS_ALL_DEFAULT);
800 en_err(priv, "Failed enabling promiscuous mode\n");
801 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
804 case MLX4_STEERING_MODE_B0:
805 err = mlx4_unicast_promisc_add(mdev->dev,
809 en_err(priv, "Failed enabling unicast promiscuous mode\n");
811 /* Add the default qp number as multicast
814 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
815 err = mlx4_multicast_promisc_add(mdev->dev,
819 en_err(priv, "Failed enabling multicast promiscuous mode\n");
820 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
824 case MLX4_STEERING_MODE_A0:
825 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
830 en_err(priv, "Failed enabling promiscuous mode\n");
834 /* Disable port multicast filter (unconditionally) */
835 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
836 0, MLX4_MCAST_DISABLE);
838 en_err(priv, "Failed disabling multicast filter\n");
840 /* Disable port VLAN filter */
841 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
843 en_err(priv, "Failed disabling VLAN filter\n");
847 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
848 struct mlx4_en_dev *mdev)
852 if (netif_msg_rx_status(priv))
853 en_warn(priv, "Leaving promiscuous mode\n");
854 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
856 /* Disable promiscouos mode */
857 switch (mdev->dev->caps.steering_mode) {
858 case MLX4_STEERING_MODE_DEVICE_MANAGED:
859 err = mlx4_flow_steer_promisc_remove(mdev->dev,
861 MLX4_FS_ALL_DEFAULT);
863 en_err(priv, "Failed disabling promiscuous mode\n");
864 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
867 case MLX4_STEERING_MODE_B0:
868 err = mlx4_unicast_promisc_remove(mdev->dev,
872 en_err(priv, "Failed disabling unicast promiscuous mode\n");
873 /* Disable Multicast promisc */
874 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
875 err = mlx4_multicast_promisc_remove(mdev->dev,
879 en_err(priv, "Failed disabling multicast promiscuous mode\n");
880 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
884 case MLX4_STEERING_MODE_A0:
885 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
889 en_err(priv, "Failed disabling promiscuous mode\n");
893 /* Enable port VLAN filter */
894 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
896 en_err(priv, "Failed enabling VLAN filter\n");
899 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
900 struct net_device *dev,
901 struct mlx4_en_dev *mdev)
903 struct mlx4_en_mc_list *mclist, *tmp;
905 u8 mc_list[16] = {0};
908 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
909 if (dev->flags & IFF_ALLMULTI) {
910 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
911 0, MLX4_MCAST_DISABLE);
913 en_err(priv, "Failed disabling multicast filter\n");
915 /* Add the default qp number as multicast promisc */
916 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
917 switch (mdev->dev->caps.steering_mode) {
918 case MLX4_STEERING_MODE_DEVICE_MANAGED:
919 err = mlx4_flow_steer_promisc_add(mdev->dev,
925 case MLX4_STEERING_MODE_B0:
926 err = mlx4_multicast_promisc_add(mdev->dev,
931 case MLX4_STEERING_MODE_A0:
935 en_err(priv, "Failed entering multicast promisc mode\n");
936 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
939 /* Disable Multicast promisc */
940 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
941 switch (mdev->dev->caps.steering_mode) {
942 case MLX4_STEERING_MODE_DEVICE_MANAGED:
943 err = mlx4_flow_steer_promisc_remove(mdev->dev,
948 case MLX4_STEERING_MODE_B0:
949 err = mlx4_multicast_promisc_remove(mdev->dev,
954 case MLX4_STEERING_MODE_A0:
958 en_err(priv, "Failed disabling multicast promiscuous mode\n");
959 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
962 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
963 0, MLX4_MCAST_DISABLE);
965 en_err(priv, "Failed disabling multicast filter\n");
967 /* Flush mcast filter and init it with broadcast address */
968 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
969 1, MLX4_MCAST_CONFIG);
971 /* Update multicast list - we cache all addresses so they won't
972 * change while HW is updated holding the command semaphor */
973 netif_addr_lock_bh(dev);
974 mlx4_en_cache_mclist(dev);
975 netif_addr_unlock_bh(dev);
976 list_for_each_entry(mclist, &priv->mc_list, list) {
977 mcast_addr = mlx4_en_mac_to_u64(mclist->addr);
978 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
979 mcast_addr, 0, MLX4_MCAST_CONFIG);
981 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
982 0, MLX4_MCAST_ENABLE);
984 en_err(priv, "Failed enabling multicast filter\n");
986 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
987 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
988 if (mclist->action == MCLIST_REM) {
989 /* detach this address and delete from list */
990 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
991 mc_list[5] = priv->port;
992 err = mlx4_multicast_detach(mdev->dev,
993 &priv->rss_map.indir_qp,
998 en_err(priv, "Fail to detach multicast address\n");
1000 /* remove from list */
1001 list_del(&mclist->list);
1003 } else if (mclist->action == MCLIST_ADD) {
1004 /* attach the address */
1005 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1006 /* needed for B0 steering support */
1007 mc_list[5] = priv->port;
1008 err = mlx4_multicast_attach(mdev->dev,
1009 &priv->rss_map.indir_qp,
1015 en_err(priv, "Fail to attach multicast address\n");
1022 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1023 struct net_device *dev,
1024 struct mlx4_en_dev *mdev)
1026 struct netdev_hw_addr *ha;
1027 struct mlx4_mac_entry *entry;
1028 struct hlist_node *tmp;
1032 struct hlist_head *bucket;
1037 /* Note that we do not need to protect our mac_hash traversal with rcu,
1038 * since all modification code is protected by mdev->state_lock
1041 /* find what to remove */
1042 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1043 bucket = &priv->mac_hash[i];
1044 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1046 netdev_for_each_uc_addr(ha, dev) {
1047 if (ether_addr_equal_64bits(entry->mac,
1054 /* MAC address of the port is not in uc list */
1055 if (ether_addr_equal_64bits(entry->mac, dev->dev_addr))
1059 mac = mlx4_en_mac_to_u64(entry->mac);
1060 mlx4_en_uc_steer_release(priv, entry->mac,
1063 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1065 hlist_del_rcu(&entry->hlist);
1066 kfree_rcu(entry, rcu);
1067 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1068 entry->mac, priv->port);
1074 /* if we didn't remove anything, there is no use in trying to add
1075 * again once we are in a forced promisc mode state
1077 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1080 prev_flags = priv->flags;
1081 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1083 /* find what to add */
1084 netdev_for_each_uc_addr(ha, dev) {
1086 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1087 hlist_for_each_entry(entry, bucket, hlist) {
1088 if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1095 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1097 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1098 ha->addr, priv->port);
1099 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1102 mac = mlx4_en_mac_to_u64(ha->addr);
1103 memcpy(entry->mac, ha->addr, ETH_ALEN);
1104 err = mlx4_register_mac(mdev->dev, priv->port, mac);
1106 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1107 ha->addr, priv->port, err);
1109 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1112 err = mlx4_en_uc_steer_add(priv, ha->addr,
1116 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1117 ha->addr, priv->port, err);
1118 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1120 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1123 unsigned int mac_hash;
1124 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1125 ha->addr, priv->port);
1126 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1127 bucket = &priv->mac_hash[mac_hash];
1128 hlist_add_head_rcu(&entry->hlist, bucket);
1133 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1134 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1136 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1137 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1142 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1144 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1146 struct mlx4_en_dev *mdev = priv->mdev;
1147 struct net_device *dev = priv->dev;
1149 mutex_lock(&mdev->state_lock);
1150 if (!mdev->device_up) {
1151 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1154 if (!priv->port_up) {
1155 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1159 if (!netif_carrier_ok(dev)) {
1160 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1161 if (priv->port_state.link_state) {
1162 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1163 netif_carrier_on(dev);
1164 en_dbg(LINK, priv, "Link Up\n");
1169 if (dev->priv_flags & IFF_UNICAST_FLT)
1170 mlx4_en_do_uc_filter(priv, dev, mdev);
1172 /* Promsicuous mode: disable all filters */
1173 if ((dev->flags & IFF_PROMISC) ||
1174 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1175 mlx4_en_set_promisc_mode(priv, mdev);
1179 /* Not in promiscuous mode */
1180 if (priv->flags & MLX4_EN_FLAG_PROMISC)
1181 mlx4_en_clear_promisc_mode(priv, mdev);
1183 mlx4_en_do_multicast(priv, dev, mdev);
1185 mutex_unlock(&mdev->state_lock);
1188 #ifdef CONFIG_NET_POLL_CONTROLLER
1189 static void mlx4_en_netpoll(struct net_device *dev)
1191 struct mlx4_en_priv *priv = netdev_priv(dev);
1192 struct mlx4_en_cq *cq;
1195 for (i = 0; i < priv->rx_ring_num; i++) {
1196 cq = &priv->rx_cq[i];
1197 napi_schedule(&cq->napi);
1202 static void mlx4_en_tx_timeout(struct net_device *dev)
1204 struct mlx4_en_priv *priv = netdev_priv(dev);
1205 struct mlx4_en_dev *mdev = priv->mdev;
1207 if (netif_msg_timer(priv))
1208 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1210 priv->port_stats.tx_timeout++;
1211 en_dbg(DRV, priv, "Scheduling watchdog\n");
1212 queue_work(mdev->workqueue, &priv->watchdog_task);
1216 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1218 struct mlx4_en_priv *priv = netdev_priv(dev);
1220 spin_lock_bh(&priv->stats_lock);
1221 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1222 spin_unlock_bh(&priv->stats_lock);
1224 return &priv->ret_stats;
1227 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1229 struct mlx4_en_cq *cq;
1232 /* If we haven't received a specific coalescing setting
1233 * (module param), we set the moderation parameters as follows:
1234 * - moder_cnt is set to the number of mtu sized packets to
1235 * satisfy our coalescing target.
1236 * - moder_time is set to a fixed value.
1238 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1239 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1240 priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1241 priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1242 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1243 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1245 /* Setup cq moderation params */
1246 for (i = 0; i < priv->rx_ring_num; i++) {
1247 cq = &priv->rx_cq[i];
1248 cq->moder_cnt = priv->rx_frames;
1249 cq->moder_time = priv->rx_usecs;
1250 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1251 priv->last_moder_packets[i] = 0;
1252 priv->last_moder_bytes[i] = 0;
1255 for (i = 0; i < priv->tx_ring_num; i++) {
1256 cq = &priv->tx_cq[i];
1257 cq->moder_cnt = priv->tx_frames;
1258 cq->moder_time = priv->tx_usecs;
1261 /* Reset auto-moderation params */
1262 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1263 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1264 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1265 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1266 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1267 priv->adaptive_rx_coal = 1;
1268 priv->last_moder_jiffies = 0;
1269 priv->last_moder_tx_packets = 0;
1272 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1274 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1275 struct mlx4_en_cq *cq;
1276 unsigned long packets;
1278 unsigned long avg_pkt_size;
1279 unsigned long rx_packets;
1280 unsigned long rx_bytes;
1281 unsigned long rx_pkt_diff;
1285 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1288 for (ring = 0; ring < priv->rx_ring_num; ring++) {
1289 spin_lock_bh(&priv->stats_lock);
1290 rx_packets = priv->rx_ring[ring].packets;
1291 rx_bytes = priv->rx_ring[ring].bytes;
1292 spin_unlock_bh(&priv->stats_lock);
1294 rx_pkt_diff = ((unsigned long) (rx_packets -
1295 priv->last_moder_packets[ring]));
1296 packets = rx_pkt_diff;
1297 rate = packets * HZ / period;
1298 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1299 priv->last_moder_bytes[ring])) / packets : 0;
1301 /* Apply auto-moderation only when packet rate
1302 * exceeds a rate that it matters */
1303 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1304 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1305 if (rate < priv->pkt_rate_low)
1306 moder_time = priv->rx_usecs_low;
1307 else if (rate > priv->pkt_rate_high)
1308 moder_time = priv->rx_usecs_high;
1310 moder_time = (rate - priv->pkt_rate_low) *
1311 (priv->rx_usecs_high - priv->rx_usecs_low) /
1312 (priv->pkt_rate_high - priv->pkt_rate_low) +
1315 moder_time = priv->rx_usecs_low;
1318 if (moder_time != priv->last_moder_time[ring]) {
1319 priv->last_moder_time[ring] = moder_time;
1320 cq = &priv->rx_cq[ring];
1321 cq->moder_time = moder_time;
1322 cq->moder_cnt = priv->rx_frames;
1323 err = mlx4_en_set_cq_moder(priv, cq);
1325 en_err(priv, "Failed modifying moderation for cq:%d\n",
1328 priv->last_moder_packets[ring] = rx_packets;
1329 priv->last_moder_bytes[ring] = rx_bytes;
1332 priv->last_moder_jiffies = jiffies;
1335 static void mlx4_en_do_get_stats(struct work_struct *work)
1337 struct delayed_work *delay = to_delayed_work(work);
1338 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1340 struct mlx4_en_dev *mdev = priv->mdev;
1343 mutex_lock(&mdev->state_lock);
1344 if (mdev->device_up) {
1345 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1347 en_dbg(HW, priv, "Could not update stats\n");
1350 mlx4_en_auto_moderation(priv);
1352 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1354 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1355 mlx4_en_do_set_mac(priv);
1356 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1358 mutex_unlock(&mdev->state_lock);
1361 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1364 static void mlx4_en_service_task(struct work_struct *work)
1366 struct delayed_work *delay = to_delayed_work(work);
1367 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1369 struct mlx4_en_dev *mdev = priv->mdev;
1371 mutex_lock(&mdev->state_lock);
1372 if (mdev->device_up) {
1373 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1374 mlx4_en_ptp_overflow_check(mdev);
1376 queue_delayed_work(mdev->workqueue, &priv->service_task,
1377 SERVICE_TASK_DELAY);
1379 mutex_unlock(&mdev->state_lock);
1382 static void mlx4_en_linkstate(struct work_struct *work)
1384 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1386 struct mlx4_en_dev *mdev = priv->mdev;
1387 int linkstate = priv->link_state;
1389 mutex_lock(&mdev->state_lock);
1390 /* If observable port state changed set carrier state and
1391 * report to system log */
1392 if (priv->last_link_state != linkstate) {
1393 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1394 en_info(priv, "Link Down\n");
1395 netif_carrier_off(priv->dev);
1397 en_info(priv, "Link Up\n");
1398 netif_carrier_on(priv->dev);
1401 priv->last_link_state = linkstate;
1402 mutex_unlock(&mdev->state_lock);
1406 int mlx4_en_start_port(struct net_device *dev)
1408 struct mlx4_en_priv *priv = netdev_priv(dev);
1409 struct mlx4_en_dev *mdev = priv->mdev;
1410 struct mlx4_en_cq *cq;
1411 struct mlx4_en_tx_ring *tx_ring;
1417 u8 mc_list[16] = {0};
1419 if (priv->port_up) {
1420 en_dbg(DRV, priv, "start port called while port already up\n");
1424 INIT_LIST_HEAD(&priv->mc_list);
1425 INIT_LIST_HEAD(&priv->curr_list);
1426 INIT_LIST_HEAD(&priv->ethtool_list);
1427 memset(&priv->ethtool_rules[0], 0,
1428 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1430 /* Calculate Rx buf size */
1431 dev->mtu = min(dev->mtu, priv->max_mtu);
1432 mlx4_en_calc_rx_buf(dev);
1433 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1435 /* Configure rx cq's and rings */
1436 err = mlx4_en_activate_rx_rings(priv);
1438 en_err(priv, "Failed to activate RX rings\n");
1441 for (i = 0; i < priv->rx_ring_num; i++) {
1442 cq = &priv->rx_cq[i];
1444 err = mlx4_en_activate_cq(priv, cq, i);
1446 en_err(priv, "Failed activating Rx CQ\n");
1449 for (j = 0; j < cq->size; j++)
1450 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1451 err = mlx4_en_set_cq_moder(priv, cq);
1453 en_err(priv, "Failed setting cq moderation parameters");
1454 mlx4_en_deactivate_cq(priv, cq);
1457 mlx4_en_arm_cq(priv, cq);
1458 priv->rx_ring[i].cqn = cq->mcq.cqn;
1463 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1464 err = mlx4_en_get_qp(priv);
1466 en_err(priv, "Failed getting eth qp\n");
1469 mdev->mac_removed[priv->port] = 0;
1471 err = mlx4_en_config_rss_steer(priv);
1473 en_err(priv, "Failed configuring rss steering\n");
1477 err = mlx4_en_create_drop_qp(priv);
1481 /* Configure tx cq's and rings */
1482 for (i = 0; i < priv->tx_ring_num; i++) {
1484 cq = &priv->tx_cq[i];
1485 err = mlx4_en_activate_cq(priv, cq, i);
1487 en_err(priv, "Failed allocating Tx CQ\n");
1490 err = mlx4_en_set_cq_moder(priv, cq);
1492 en_err(priv, "Failed setting cq moderation parameters");
1493 mlx4_en_deactivate_cq(priv, cq);
1496 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1497 cq->buf->wqe_index = cpu_to_be16(0xffff);
1499 /* Configure ring */
1500 tx_ring = &priv->tx_ring[i];
1501 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1502 i / priv->num_tx_rings_p_up);
1504 en_err(priv, "Failed allocating Tx ring\n");
1505 mlx4_en_deactivate_cq(priv, cq);
1508 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1510 /* Arm CQ for TX completions */
1511 mlx4_en_arm_cq(priv, cq);
1513 /* Set initial ownership of all Tx TXBBs to SW (1) */
1514 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1515 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1519 /* Configure port */
1520 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1521 priv->rx_skb_size + ETH_FCS_LEN,
1522 priv->prof->tx_pause,
1524 priv->prof->rx_pause,
1525 priv->prof->rx_ppp);
1527 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1531 /* Set default qp number */
1532 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1534 en_err(priv, "Failed setting default qp numbers\n");
1539 en_dbg(HW, priv, "Initializing port\n");
1540 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1542 en_err(priv, "Failed Initializing port\n");
1546 /* Attach rx QP to bradcast address */
1547 memset(&mc_list[10], 0xff, ETH_ALEN);
1548 mc_list[5] = priv->port; /* needed for B0 steering support */
1549 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1550 priv->port, 0, MLX4_PROT_ETH,
1551 &priv->broadcast_id))
1552 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1554 /* Must redo promiscuous mode setup. */
1555 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1557 /* Schedule multicast task to populate multicast list */
1558 queue_work(mdev->workqueue, &priv->rx_mode_task);
1560 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1562 priv->port_up = true;
1563 netif_tx_start_all_queues(dev);
1564 netif_device_attach(dev);
1569 while (tx_index--) {
1570 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
1571 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
1573 mlx4_en_destroy_drop_qp(priv);
1575 mlx4_en_release_rss_steer(priv);
1577 mlx4_en_put_qp(priv);
1580 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
1581 for (i = 0; i < priv->rx_ring_num; i++)
1582 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1584 return err; /* need to close devices */
1588 void mlx4_en_stop_port(struct net_device *dev, int detach)
1590 struct mlx4_en_priv *priv = netdev_priv(dev);
1591 struct mlx4_en_dev *mdev = priv->mdev;
1592 struct mlx4_en_mc_list *mclist, *tmp;
1593 struct ethtool_flow_id *flow, *tmp_flow;
1595 u8 mc_list[16] = {0};
1597 if (!priv->port_up) {
1598 en_dbg(DRV, priv, "stop port called while port already down\n");
1602 /* Synchronize with tx routine */
1603 netif_tx_lock_bh(dev);
1605 netif_device_detach(dev);
1606 netif_tx_stop_all_queues(dev);
1607 netif_tx_unlock_bh(dev);
1609 netif_tx_disable(dev);
1611 /* Set port as not active */
1612 priv->port_up = false;
1614 /* Promsicuous mode */
1615 if (mdev->dev->caps.steering_mode ==
1616 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1617 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1618 MLX4_EN_FLAG_MC_PROMISC);
1619 mlx4_flow_steer_promisc_remove(mdev->dev,
1621 MLX4_FS_ALL_DEFAULT);
1622 mlx4_flow_steer_promisc_remove(mdev->dev,
1624 MLX4_FS_MC_DEFAULT);
1625 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1626 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1628 /* Disable promiscouos mode */
1629 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1632 /* Disable Multicast promisc */
1633 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1634 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1636 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1640 /* Detach All multicasts */
1641 memset(&mc_list[10], 0xff, ETH_ALEN);
1642 mc_list[5] = priv->port; /* needed for B0 steering support */
1643 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1644 MLX4_PROT_ETH, priv->broadcast_id);
1645 list_for_each_entry(mclist, &priv->curr_list, list) {
1646 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1647 mc_list[5] = priv->port;
1648 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1649 mc_list, MLX4_PROT_ETH, mclist->reg_id);
1651 mlx4_en_clear_list(dev);
1652 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1653 list_del(&mclist->list);
1657 /* Flush multicast filter */
1658 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1660 /* Remove flow steering rules for the port*/
1661 if (mdev->dev->caps.steering_mode ==
1662 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1664 list_for_each_entry_safe(flow, tmp_flow,
1665 &priv->ethtool_list, list) {
1666 mlx4_flow_detach(mdev->dev, flow->id);
1667 list_del(&flow->list);
1671 mlx4_en_destroy_drop_qp(priv);
1674 for (i = 0; i < priv->tx_ring_num; i++) {
1675 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
1676 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
1680 for (i = 0; i < priv->tx_ring_num; i++)
1681 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
1684 mlx4_en_release_rss_steer(priv);
1686 /* Unregister Mac address for the port */
1687 mlx4_en_put_qp(priv);
1688 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAGS2_REASSIGN_MAC_EN))
1689 mdev->mac_removed[priv->port] = 1;
1692 for (i = 0; i < priv->rx_ring_num; i++) {
1693 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1694 while (test_bit(NAPI_STATE_SCHED, &priv->rx_cq[i].napi.state))
1696 mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
1700 mlx4_CLOSE_PORT(mdev->dev, priv->port);
1703 static void mlx4_en_restart(struct work_struct *work)
1705 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1707 struct mlx4_en_dev *mdev = priv->mdev;
1708 struct net_device *dev = priv->dev;
1710 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1712 mutex_lock(&mdev->state_lock);
1713 if (priv->port_up) {
1714 mlx4_en_stop_port(dev, 1);
1715 if (mlx4_en_start_port(dev))
1716 en_err(priv, "Failed restarting port %d\n", priv->port);
1718 mutex_unlock(&mdev->state_lock);
1721 static void mlx4_en_clear_stats(struct net_device *dev)
1723 struct mlx4_en_priv *priv = netdev_priv(dev);
1724 struct mlx4_en_dev *mdev = priv->mdev;
1727 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1728 en_dbg(HW, priv, "Failed dumping statistics\n");
1730 memset(&priv->stats, 0, sizeof(priv->stats));
1731 memset(&priv->pstats, 0, sizeof(priv->pstats));
1732 memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1733 memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1735 for (i = 0; i < priv->tx_ring_num; i++) {
1736 priv->tx_ring[i].bytes = 0;
1737 priv->tx_ring[i].packets = 0;
1738 priv->tx_ring[i].tx_csum = 0;
1740 for (i = 0; i < priv->rx_ring_num; i++) {
1741 priv->rx_ring[i].bytes = 0;
1742 priv->rx_ring[i].packets = 0;
1743 priv->rx_ring[i].csum_ok = 0;
1744 priv->rx_ring[i].csum_none = 0;
1748 static int mlx4_en_open(struct net_device *dev)
1750 struct mlx4_en_priv *priv = netdev_priv(dev);
1751 struct mlx4_en_dev *mdev = priv->mdev;
1754 mutex_lock(&mdev->state_lock);
1756 if (!mdev->device_up) {
1757 en_err(priv, "Cannot open - device down/disabled\n");
1762 /* Reset HW statistics and SW counters */
1763 mlx4_en_clear_stats(dev);
1765 err = mlx4_en_start_port(dev);
1767 en_err(priv, "Failed starting port:%d\n", priv->port);
1770 mutex_unlock(&mdev->state_lock);
1775 static int mlx4_en_close(struct net_device *dev)
1777 struct mlx4_en_priv *priv = netdev_priv(dev);
1778 struct mlx4_en_dev *mdev = priv->mdev;
1780 en_dbg(IFDOWN, priv, "Close port called\n");
1782 mutex_lock(&mdev->state_lock);
1784 mlx4_en_stop_port(dev, 0);
1785 netif_carrier_off(dev);
1787 mutex_unlock(&mdev->state_lock);
1791 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1795 #ifdef CONFIG_RFS_ACCEL
1796 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1797 priv->dev->rx_cpu_rmap = NULL;
1800 for (i = 0; i < priv->tx_ring_num; i++) {
1801 if (priv->tx_ring[i].tx_info)
1802 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1803 if (priv->tx_cq[i].buf)
1804 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1807 for (i = 0; i < priv->rx_ring_num; i++) {
1808 if (priv->rx_ring[i].rx_info)
1809 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1810 priv->prof->rx_ring_size, priv->stride);
1811 if (priv->rx_cq[i].buf)
1812 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1815 if (priv->base_tx_qpn) {
1816 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1817 priv->base_tx_qpn = 0;
1821 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1823 struct mlx4_en_port_profile *prof = priv->prof;
1827 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1829 en_err(priv, "failed reserving range for TX rings\n");
1833 /* Create tx Rings */
1834 for (i = 0; i < priv->tx_ring_num; i++) {
1835 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1836 prof->tx_ring_size, i, TX))
1839 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], priv->base_tx_qpn + i,
1840 prof->tx_ring_size, TXBB_SIZE))
1844 /* Create rx Rings */
1845 for (i = 0; i < priv->rx_ring_num; i++) {
1846 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1847 prof->rx_ring_size, i, RX))
1850 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1851 prof->rx_ring_size, priv->stride))
1855 #ifdef CONFIG_RFS_ACCEL
1856 if (priv->mdev->dev->caps.comp_pool) {
1857 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
1858 if (!priv->dev->rx_cpu_rmap)
1866 en_err(priv, "Failed to allocate NIC resources\n");
1871 void mlx4_en_destroy_netdev(struct net_device *dev)
1873 struct mlx4_en_priv *priv = netdev_priv(dev);
1874 struct mlx4_en_dev *mdev = priv->mdev;
1876 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1878 /* Unregister device - this will close the port if it was up */
1879 if (priv->registered)
1880 unregister_netdev(dev);
1882 if (priv->allocated)
1883 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1885 cancel_delayed_work(&priv->stats_task);
1886 cancel_delayed_work(&priv->service_task);
1887 /* flush any pending task for this netdev */
1888 flush_workqueue(mdev->workqueue);
1890 /* Detach the netdev so tasks would not attempt to access it */
1891 mutex_lock(&mdev->state_lock);
1892 mdev->pndev[priv->port] = NULL;
1893 mutex_unlock(&mdev->state_lock);
1895 mlx4_en_free_resources(priv);
1897 kfree(priv->tx_ring);
1903 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1905 struct mlx4_en_priv *priv = netdev_priv(dev);
1906 struct mlx4_en_dev *mdev = priv->mdev;
1909 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
1912 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1913 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
1918 if (netif_running(dev)) {
1919 mutex_lock(&mdev->state_lock);
1920 if (!mdev->device_up) {
1921 /* NIC is probably restarting - let watchdog task reset
1923 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1925 mlx4_en_stop_port(dev, 1);
1926 err = mlx4_en_start_port(dev);
1928 en_err(priv, "Failed restarting port:%d\n",
1930 queue_work(mdev->workqueue, &priv->watchdog_task);
1933 mutex_unlock(&mdev->state_lock);
1938 static int mlx4_en_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr)
1940 struct mlx4_en_priv *priv = netdev_priv(dev);
1941 struct mlx4_en_dev *mdev = priv->mdev;
1942 struct hwtstamp_config config;
1944 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
1947 /* reserved for future extensions */
1951 /* device doesn't support time stamping */
1952 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
1955 /* TX HW timestamp */
1956 switch (config.tx_type) {
1957 case HWTSTAMP_TX_OFF:
1958 case HWTSTAMP_TX_ON:
1964 /* RX HW timestamp */
1965 switch (config.rx_filter) {
1966 case HWTSTAMP_FILTER_NONE:
1968 case HWTSTAMP_FILTER_ALL:
1969 case HWTSTAMP_FILTER_SOME:
1970 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1971 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1972 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1973 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1974 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1975 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1976 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1977 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1978 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1979 case HWTSTAMP_FILTER_PTP_V2_EVENT:
1980 case HWTSTAMP_FILTER_PTP_V2_SYNC:
1981 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1982 config.rx_filter = HWTSTAMP_FILTER_ALL;
1988 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
1989 config.tx_type = HWTSTAMP_TX_OFF;
1990 config.rx_filter = HWTSTAMP_FILTER_NONE;
1993 return copy_to_user(ifr->ifr_data, &config,
1994 sizeof(config)) ? -EFAULT : 0;
1997 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2001 return mlx4_en_hwtstamp_ioctl(dev, ifr);
2007 static int mlx4_en_set_features(struct net_device *netdev,
2008 netdev_features_t features)
2010 struct mlx4_en_priv *priv = netdev_priv(netdev);
2012 if (features & NETIF_F_LOOPBACK)
2013 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2016 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2018 mlx4_en_update_loopback_state(netdev, features);
2024 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2026 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2027 struct mlx4_en_dev *mdev = en_priv->mdev;
2028 u64 mac_u64 = mlx4_en_mac_to_u64(mac);
2030 if (!is_valid_ether_addr(mac))
2033 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2036 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2038 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2039 struct mlx4_en_dev *mdev = en_priv->mdev;
2041 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2044 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2046 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2047 struct mlx4_en_dev *mdev = en_priv->mdev;
2049 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2052 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2054 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2055 struct mlx4_en_dev *mdev = en_priv->mdev;
2057 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2060 static const struct net_device_ops mlx4_netdev_ops = {
2061 .ndo_open = mlx4_en_open,
2062 .ndo_stop = mlx4_en_close,
2063 .ndo_start_xmit = mlx4_en_xmit,
2064 .ndo_select_queue = mlx4_en_select_queue,
2065 .ndo_get_stats = mlx4_en_get_stats,
2066 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2067 .ndo_set_mac_address = mlx4_en_set_mac,
2068 .ndo_validate_addr = eth_validate_addr,
2069 .ndo_change_mtu = mlx4_en_change_mtu,
2070 .ndo_do_ioctl = mlx4_en_ioctl,
2071 .ndo_tx_timeout = mlx4_en_tx_timeout,
2072 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2073 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2074 #ifdef CONFIG_NET_POLL_CONTROLLER
2075 .ndo_poll_controller = mlx4_en_netpoll,
2077 .ndo_set_features = mlx4_en_set_features,
2078 .ndo_setup_tc = mlx4_en_setup_tc,
2079 #ifdef CONFIG_RFS_ACCEL
2080 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2084 static const struct net_device_ops mlx4_netdev_ops_master = {
2085 .ndo_open = mlx4_en_open,
2086 .ndo_stop = mlx4_en_close,
2087 .ndo_start_xmit = mlx4_en_xmit,
2088 .ndo_select_queue = mlx4_en_select_queue,
2089 .ndo_get_stats = mlx4_en_get_stats,
2090 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2091 .ndo_set_mac_address = mlx4_en_set_mac,
2092 .ndo_validate_addr = eth_validate_addr,
2093 .ndo_change_mtu = mlx4_en_change_mtu,
2094 .ndo_tx_timeout = mlx4_en_tx_timeout,
2095 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2096 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2097 .ndo_set_vf_mac = mlx4_en_set_vf_mac,
2098 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2099 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2100 .ndo_get_vf_config = mlx4_en_get_vf_config,
2101 #ifdef CONFIG_NET_POLL_CONTROLLER
2102 .ndo_poll_controller = mlx4_en_netpoll,
2104 .ndo_set_features = mlx4_en_set_features,
2105 .ndo_setup_tc = mlx4_en_setup_tc,
2106 #ifdef CONFIG_RFS_ACCEL
2107 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2111 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2112 struct mlx4_en_port_profile *prof)
2114 struct net_device *dev;
2115 struct mlx4_en_priv *priv;
2120 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2121 MAX_TX_RINGS, MAX_RX_RINGS);
2125 netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2126 netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2128 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2129 dev->dev_id = port - 1;
2132 * Initialize driver private data
2135 priv = netdev_priv(dev);
2136 memset(priv, 0, sizeof(struct mlx4_en_priv));
2139 priv->ddev = &mdev->pdev->dev;
2142 priv->port_up = false;
2143 priv->flags = prof->flags;
2144 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2145 MLX4_WQE_CTRL_SOLICITED);
2146 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2147 priv->tx_ring_num = prof->tx_ring_num;
2149 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring) * MAX_TX_RINGS,
2151 if (!priv->tx_ring) {
2155 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq) * MAX_TX_RINGS,
2161 priv->rx_ring_num = prof->rx_ring_num;
2162 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2163 priv->mac_index = -1;
2164 priv->msg_enable = MLX4_EN_MSG_LEVEL;
2165 spin_lock_init(&priv->stats_lock);
2166 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2167 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2168 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2169 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2170 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2171 #ifdef CONFIG_MLX4_EN_DCB
2172 if (!mlx4_is_slave(priv->mdev->dev)) {
2173 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2174 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2176 en_info(priv, "enabling only PFC DCB ops\n");
2177 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2182 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2183 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2185 /* Query for default mac and max mtu */
2186 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2188 /* Set default MAC */
2189 dev->addr_len = ETH_ALEN;
2190 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2191 if (!is_valid_ether_addr(dev->dev_addr)) {
2192 if (mlx4_is_slave(priv->mdev->dev)) {
2193 eth_hw_addr_random(dev);
2194 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2195 mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr);
2196 mdev->dev->caps.def_mac[priv->port] = mac_u64;
2198 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2199 priv->port, dev->dev_addr);
2205 memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
2207 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2208 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2209 err = mlx4_en_alloc_resources(priv);
2213 #ifdef CONFIG_RFS_ACCEL
2214 INIT_LIST_HEAD(&priv->filters);
2215 spin_lock_init(&priv->filters_lock);
2218 /* Initialize time stamping config */
2219 priv->hwtstamp_config.flags = 0;
2220 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2221 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2223 /* Allocate page for receive rings */
2224 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2225 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2227 en_err(priv, "Failed to allocate page for rx qps\n");
2230 priv->allocated = 1;
2233 * Initialize netdev entry points
2235 if (mlx4_is_master(priv->mdev->dev))
2236 dev->netdev_ops = &mlx4_netdev_ops_master;
2238 dev->netdev_ops = &mlx4_netdev_ops;
2239 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2240 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2241 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2243 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
2246 * Set driver features
2248 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2249 if (mdev->LSO_support)
2250 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2252 dev->vlan_features = dev->hw_features;
2254 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2255 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2256 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2257 NETIF_F_HW_VLAN_CTAG_FILTER;
2258 dev->hw_features |= NETIF_F_LOOPBACK;
2260 if (mdev->dev->caps.steering_mode ==
2261 MLX4_STEERING_MODE_DEVICE_MANAGED)
2262 dev->hw_features |= NETIF_F_NTUPLE;
2264 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2265 dev->priv_flags |= IFF_UNICAST_FLT;
2267 mdev->pndev[port] = dev;
2269 netif_carrier_off(dev);
2270 err = register_netdev(dev);
2272 en_err(priv, "Netdev registration failed for port %d\n", port);
2275 priv->registered = 1;
2277 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2278 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2280 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2282 /* Configure port */
2283 mlx4_en_calc_rx_buf(dev);
2284 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2285 priv->rx_skb_size + ETH_FCS_LEN,
2286 prof->tx_pause, prof->tx_ppp,
2287 prof->rx_pause, prof->rx_ppp);
2289 en_err(priv, "Failed setting port general configurations "
2290 "for port %d, with error %d\n", priv->port, err);
2295 en_warn(priv, "Initializing port\n");
2296 err = mlx4_INIT_PORT(mdev->dev, priv->port);
2298 en_err(priv, "Failed Initializing port\n");
2301 mlx4_en_set_default_moderation(priv);
2302 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2304 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2305 queue_delayed_work(mdev->workqueue, &priv->service_task,
2306 SERVICE_TASK_DELAY);
2311 mlx4_en_destroy_netdev(dev);