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>
41 #include <net/ll_poll.h>
43 #include <linux/mlx4/driver.h>
44 #include <linux/mlx4/device.h>
45 #include <linux/mlx4/cmd.h>
46 #include <linux/mlx4/cq.h>
51 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
53 struct mlx4_en_priv *priv = netdev_priv(dev);
55 unsigned int offset = 0;
57 if (up && up != MLX4_EN_NUM_UP)
60 netdev_set_num_tc(dev, up);
62 /* Partition Tx queues evenly amongst UP's */
63 for (i = 0; i < up; i++) {
64 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
65 offset += priv->num_tx_rings_p_up;
71 #ifdef CONFIG_NET_LL_RX_POLL
72 /* must be called with local_bh_disable()d */
73 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
75 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
76 struct net_device *dev = cq->dev;
77 struct mlx4_en_priv *priv = netdev_priv(dev);
78 struct mlx4_en_rx_ring *rx_ring = &priv->rx_ring[cq->ring];
82 return LL_FLUSH_FAILED;
84 if (!mlx4_en_cq_lock_poll(cq))
87 done = mlx4_en_process_rx_cq(dev, cq, 4);
89 rx_ring->cleaned += done;
93 mlx4_en_cq_unlock_poll(cq);
97 #endif /* CONFIG_NET_LL_RX_POLL */
99 #ifdef CONFIG_RFS_ACCEL
101 struct mlx4_en_filter {
102 struct list_head next;
103 struct work_struct work;
111 struct mlx4_en_priv *priv;
112 u32 flow_id; /* RFS infrastructure id */
113 int id; /* mlx4_en driver id */
114 u64 reg_id; /* Flow steering API id */
115 u8 activated; /* Used to prevent expiry before filter
118 struct hlist_node filter_chain;
121 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
123 static void mlx4_en_filter_work(struct work_struct *work)
125 struct mlx4_en_filter *filter = container_of(work,
126 struct mlx4_en_filter,
128 struct mlx4_en_priv *priv = filter->priv;
129 struct mlx4_spec_list spec_tcp = {
130 .id = MLX4_NET_TRANS_RULE_ID_TCP,
133 .dst_port = filter->dst_port,
134 .dst_port_msk = (__force __be16)-1,
135 .src_port = filter->src_port,
136 .src_port_msk = (__force __be16)-1,
140 struct mlx4_spec_list spec_ip = {
141 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
144 .dst_ip = filter->dst_ip,
145 .dst_ip_msk = (__force __be32)-1,
146 .src_ip = filter->src_ip,
147 .src_ip_msk = (__force __be32)-1,
151 struct mlx4_spec_list spec_eth = {
152 .id = MLX4_NET_TRANS_RULE_ID_ETH,
154 struct mlx4_net_trans_rule rule = {
155 .list = LIST_HEAD_INIT(rule.list),
156 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
159 .promisc_mode = MLX4_FS_REGULAR,
161 .priority = MLX4_DOMAIN_RFS,
164 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
166 list_add_tail(&spec_eth.list, &rule.list);
167 list_add_tail(&spec_ip.list, &rule.list);
168 list_add_tail(&spec_tcp.list, &rule.list);
170 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
171 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
172 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
174 filter->activated = 0;
176 if (filter->reg_id) {
177 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
178 if (rc && rc != -ENOENT)
179 en_err(priv, "Error detaching flow. rc = %d\n", rc);
182 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
184 en_err(priv, "Error attaching flow. err = %d\n", rc);
186 mlx4_en_filter_rfs_expire(priv);
188 filter->activated = 1;
191 static inline struct hlist_head *
192 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
193 __be16 src_port, __be16 dst_port)
198 l = (__force unsigned long)src_port |
199 ((__force unsigned long)dst_port << 2);
200 l ^= (__force unsigned long)(src_ip ^ dst_ip);
202 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
204 return &priv->filter_hash[bucket_idx];
207 static struct mlx4_en_filter *
208 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
209 __be32 dst_ip, __be16 src_port, __be16 dst_port,
212 struct mlx4_en_filter *filter = NULL;
214 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
219 filter->rxq_index = rxq_index;
220 INIT_WORK(&filter->work, mlx4_en_filter_work);
222 filter->src_ip = src_ip;
223 filter->dst_ip = dst_ip;
224 filter->src_port = src_port;
225 filter->dst_port = dst_port;
227 filter->flow_id = flow_id;
229 filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
231 list_add_tail(&filter->next, &priv->filters);
232 hlist_add_head(&filter->filter_chain,
233 filter_hash_bucket(priv, src_ip, dst_ip, src_port,
239 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
241 struct mlx4_en_priv *priv = filter->priv;
244 list_del(&filter->next);
246 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
247 if (rc && rc != -ENOENT)
248 en_err(priv, "Error detaching flow. rc = %d\n", rc);
253 static inline struct mlx4_en_filter *
254 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
255 __be16 src_port, __be16 dst_port)
257 struct mlx4_en_filter *filter;
258 struct mlx4_en_filter *ret = NULL;
260 hlist_for_each_entry(filter,
261 filter_hash_bucket(priv, src_ip, dst_ip,
264 if (filter->src_ip == src_ip &&
265 filter->dst_ip == dst_ip &&
266 filter->src_port == src_port &&
267 filter->dst_port == dst_port) {
277 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
278 u16 rxq_index, u32 flow_id)
280 struct mlx4_en_priv *priv = netdev_priv(net_dev);
281 struct mlx4_en_filter *filter;
282 const struct iphdr *ip;
288 int nhoff = skb_network_offset(skb);
291 if (skb->protocol != htons(ETH_P_IP))
292 return -EPROTONOSUPPORT;
294 ip = (const struct iphdr *)(skb->data + nhoff);
295 if (ip_is_fragment(ip))
296 return -EPROTONOSUPPORT;
298 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
305 if (ip->protocol != IPPROTO_TCP)
306 return -EPROTONOSUPPORT;
308 spin_lock_bh(&priv->filters_lock);
309 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, src_port, dst_port);
311 if (filter->rxq_index == rxq_index)
314 filter->rxq_index = rxq_index;
316 filter = mlx4_en_filter_alloc(priv, rxq_index,
318 src_port, dst_port, flow_id);
325 queue_work(priv->mdev->workqueue, &filter->work);
330 spin_unlock_bh(&priv->filters_lock);
335 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv,
336 struct mlx4_en_rx_ring *rx_ring)
338 struct mlx4_en_filter *filter, *tmp;
341 spin_lock_bh(&priv->filters_lock);
342 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
343 list_move(&filter->next, &del_list);
344 hlist_del(&filter->filter_chain);
346 spin_unlock_bh(&priv->filters_lock);
348 list_for_each_entry_safe(filter, tmp, &del_list, next) {
349 cancel_work_sync(&filter->work);
350 mlx4_en_filter_free(filter);
354 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
356 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
360 spin_lock_bh(&priv->filters_lock);
361 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
362 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
365 if (filter->activated &&
366 !work_pending(&filter->work) &&
367 rps_may_expire_flow(priv->dev,
368 filter->rxq_index, filter->flow_id,
370 list_move(&filter->next, &del_list);
371 hlist_del(&filter->filter_chain);
373 last_filter = filter;
378 if (last_filter && (&last_filter->next != priv->filters.next))
379 list_move(&priv->filters, &last_filter->next);
381 spin_unlock_bh(&priv->filters_lock);
383 list_for_each_entry_safe(filter, tmp, &del_list, next)
384 mlx4_en_filter_free(filter);
388 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
389 __be16 proto, u16 vid)
391 struct mlx4_en_priv *priv = netdev_priv(dev);
392 struct mlx4_en_dev *mdev = priv->mdev;
396 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
398 set_bit(vid, priv->active_vlans);
400 /* Add VID to port VLAN filter */
401 mutex_lock(&mdev->state_lock);
402 if (mdev->device_up && priv->port_up) {
403 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
405 en_err(priv, "Failed configuring VLAN filter\n");
407 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
408 en_err(priv, "failed adding vlan %d\n", vid);
409 mutex_unlock(&mdev->state_lock);
414 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
415 __be16 proto, u16 vid)
417 struct mlx4_en_priv *priv = netdev_priv(dev);
418 struct mlx4_en_dev *mdev = priv->mdev;
422 en_dbg(HW, priv, "Killing VID:%d\n", vid);
424 clear_bit(vid, priv->active_vlans);
426 /* Remove VID from port VLAN filter */
427 mutex_lock(&mdev->state_lock);
428 if (!mlx4_find_cached_vlan(mdev->dev, priv->port, vid, &idx))
429 mlx4_unregister_vlan(mdev->dev, priv->port, idx);
431 en_err(priv, "could not find vid %d in cache\n", vid);
433 if (mdev->device_up && priv->port_up) {
434 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
436 en_err(priv, "Failed configuring VLAN filter\n");
438 mutex_unlock(&mdev->state_lock);
443 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
446 for (i = ETH_ALEN - 1; i >= 0; --i) {
447 dst_mac[i] = src_mac & 0xff;
450 memset(&dst_mac[ETH_ALEN], 0, 2);
453 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
454 unsigned char *mac, int *qpn, u64 *reg_id)
456 struct mlx4_en_dev *mdev = priv->mdev;
457 struct mlx4_dev *dev = mdev->dev;
460 switch (dev->caps.steering_mode) {
461 case MLX4_STEERING_MODE_B0: {
466 memcpy(&gid[10], mac, ETH_ALEN);
469 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
472 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
473 struct mlx4_spec_list spec_eth = { {NULL} };
474 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
476 struct mlx4_net_trans_rule rule = {
477 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
480 .promisc_mode = MLX4_FS_REGULAR,
481 .priority = MLX4_DOMAIN_NIC,
484 rule.port = priv->port;
486 INIT_LIST_HEAD(&rule.list);
488 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
489 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
490 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
491 list_add_tail(&spec_eth.list, &rule.list);
493 err = mlx4_flow_attach(dev, &rule, reg_id);
500 en_warn(priv, "Failed Attaching Unicast\n");
505 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
506 unsigned char *mac, int qpn, u64 reg_id)
508 struct mlx4_en_dev *mdev = priv->mdev;
509 struct mlx4_dev *dev = mdev->dev;
511 switch (dev->caps.steering_mode) {
512 case MLX4_STEERING_MODE_B0: {
517 memcpy(&gid[10], mac, ETH_ALEN);
520 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
523 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
524 mlx4_flow_detach(dev, reg_id);
528 en_err(priv, "Invalid steering mode.\n");
532 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
534 struct mlx4_en_dev *mdev = priv->mdev;
535 struct mlx4_dev *dev = mdev->dev;
536 struct mlx4_mac_entry *entry;
540 int *qpn = &priv->base_qpn;
541 u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
543 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
544 priv->dev->dev_addr);
545 index = mlx4_register_mac(dev, priv->port, mac);
548 en_err(priv, "Failed adding MAC: %pM\n",
549 priv->dev->dev_addr);
553 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
554 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
555 *qpn = base_qpn + index;
559 err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
560 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
562 en_err(priv, "Failed to reserve qp for mac registration\n");
566 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id);
570 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
575 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
576 entry->reg_id = reg_id;
578 hlist_add_head_rcu(&entry->hlist,
579 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
584 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
587 mlx4_qp_release_range(dev, *qpn, 1);
590 mlx4_unregister_mac(dev, priv->port, mac);
594 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
596 struct mlx4_en_dev *mdev = priv->mdev;
597 struct mlx4_dev *dev = mdev->dev;
598 int qpn = priv->base_qpn;
601 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
602 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
603 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
604 priv->dev->dev_addr);
605 mlx4_unregister_mac(dev, priv->port, mac);
607 struct mlx4_mac_entry *entry;
608 struct hlist_node *tmp;
609 struct hlist_head *bucket;
612 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
613 bucket = &priv->mac_hash[i];
614 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
615 mac = mlx4_en_mac_to_u64(entry->mac);
616 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
618 mlx4_en_uc_steer_release(priv, entry->mac,
621 mlx4_unregister_mac(dev, priv->port, mac);
622 hlist_del_rcu(&entry->hlist);
623 kfree_rcu(entry, rcu);
627 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
629 mlx4_qp_release_range(dev, qpn, 1);
630 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
634 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
635 unsigned char *new_mac, unsigned char *prev_mac)
637 struct mlx4_en_dev *mdev = priv->mdev;
638 struct mlx4_dev *dev = mdev->dev;
640 u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac);
642 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
643 struct hlist_head *bucket;
644 unsigned int mac_hash;
645 struct mlx4_mac_entry *entry;
646 struct hlist_node *tmp;
647 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac);
649 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
650 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
651 if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
652 mlx4_en_uc_steer_release(priv, entry->mac,
654 mlx4_unregister_mac(dev, priv->port,
656 hlist_del_rcu(&entry->hlist);
658 memcpy(entry->mac, new_mac, ETH_ALEN);
660 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
661 hlist_add_head_rcu(&entry->hlist,
662 &priv->mac_hash[mac_hash]);
663 mlx4_register_mac(dev, priv->port, new_mac_u64);
664 err = mlx4_en_uc_steer_add(priv, new_mac,
673 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
676 u64 mlx4_en_mac_to_u64(u8 *addr)
681 for (i = 0; i < ETH_ALEN; i++) {
688 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
693 /* Remove old MAC and insert the new one */
694 err = mlx4_en_replace_mac(priv, priv->base_qpn,
695 priv->dev->dev_addr, priv->prev_mac);
697 en_err(priv, "Failed changing HW MAC address\n");
698 memcpy(priv->prev_mac, priv->dev->dev_addr,
699 sizeof(priv->prev_mac));
701 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
706 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
708 struct mlx4_en_priv *priv = netdev_priv(dev);
709 struct mlx4_en_dev *mdev = priv->mdev;
710 struct sockaddr *saddr = addr;
713 if (!is_valid_ether_addr(saddr->sa_data))
714 return -EADDRNOTAVAIL;
716 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
718 mutex_lock(&mdev->state_lock);
719 err = mlx4_en_do_set_mac(priv);
720 mutex_unlock(&mdev->state_lock);
725 static void mlx4_en_clear_list(struct net_device *dev)
727 struct mlx4_en_priv *priv = netdev_priv(dev);
728 struct mlx4_en_mc_list *tmp, *mc_to_del;
730 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
731 list_del(&mc_to_del->list);
736 static void mlx4_en_cache_mclist(struct net_device *dev)
738 struct mlx4_en_priv *priv = netdev_priv(dev);
739 struct netdev_hw_addr *ha;
740 struct mlx4_en_mc_list *tmp;
742 mlx4_en_clear_list(dev);
743 netdev_for_each_mc_addr(ha, dev) {
744 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
746 mlx4_en_clear_list(dev);
749 memcpy(tmp->addr, ha->addr, ETH_ALEN);
750 list_add_tail(&tmp->list, &priv->mc_list);
754 static void update_mclist_flags(struct mlx4_en_priv *priv,
755 struct list_head *dst,
756 struct list_head *src)
758 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
761 /* Find all the entries that should be removed from dst,
762 * These are the entries that are not found in src
764 list_for_each_entry(dst_tmp, dst, list) {
766 list_for_each_entry(src_tmp, src, list) {
767 if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
773 dst_tmp->action = MCLIST_REM;
776 /* Add entries that exist in src but not in dst
777 * mark them as need to add
779 list_for_each_entry(src_tmp, src, list) {
781 list_for_each_entry(dst_tmp, dst, list) {
782 if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
783 dst_tmp->action = MCLIST_NONE;
789 new_mc = kmemdup(src_tmp,
790 sizeof(struct mlx4_en_mc_list),
795 new_mc->action = MCLIST_ADD;
796 list_add_tail(&new_mc->list, dst);
801 static void mlx4_en_set_rx_mode(struct net_device *dev)
803 struct mlx4_en_priv *priv = netdev_priv(dev);
808 queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
811 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
812 struct mlx4_en_dev *mdev)
816 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
817 if (netif_msg_rx_status(priv))
818 en_warn(priv, "Entering promiscuous mode\n");
819 priv->flags |= MLX4_EN_FLAG_PROMISC;
821 /* Enable promiscouos mode */
822 switch (mdev->dev->caps.steering_mode) {
823 case MLX4_STEERING_MODE_DEVICE_MANAGED:
824 err = mlx4_flow_steer_promisc_add(mdev->dev,
827 MLX4_FS_ALL_DEFAULT);
829 en_err(priv, "Failed enabling promiscuous mode\n");
830 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
833 case MLX4_STEERING_MODE_B0:
834 err = mlx4_unicast_promisc_add(mdev->dev,
838 en_err(priv, "Failed enabling unicast promiscuous mode\n");
840 /* Add the default qp number as multicast
843 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
844 err = mlx4_multicast_promisc_add(mdev->dev,
848 en_err(priv, "Failed enabling multicast promiscuous mode\n");
849 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
853 case MLX4_STEERING_MODE_A0:
854 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
859 en_err(priv, "Failed enabling promiscuous mode\n");
863 /* Disable port multicast filter (unconditionally) */
864 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
865 0, MLX4_MCAST_DISABLE);
867 en_err(priv, "Failed disabling multicast filter\n");
869 /* Disable port VLAN filter */
870 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
872 en_err(priv, "Failed disabling VLAN filter\n");
876 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
877 struct mlx4_en_dev *mdev)
881 if (netif_msg_rx_status(priv))
882 en_warn(priv, "Leaving promiscuous mode\n");
883 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
885 /* Disable promiscouos mode */
886 switch (mdev->dev->caps.steering_mode) {
887 case MLX4_STEERING_MODE_DEVICE_MANAGED:
888 err = mlx4_flow_steer_promisc_remove(mdev->dev,
890 MLX4_FS_ALL_DEFAULT);
892 en_err(priv, "Failed disabling promiscuous mode\n");
893 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
896 case MLX4_STEERING_MODE_B0:
897 err = mlx4_unicast_promisc_remove(mdev->dev,
901 en_err(priv, "Failed disabling unicast promiscuous mode\n");
902 /* Disable Multicast promisc */
903 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
904 err = mlx4_multicast_promisc_remove(mdev->dev,
908 en_err(priv, "Failed disabling multicast promiscuous mode\n");
909 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
913 case MLX4_STEERING_MODE_A0:
914 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
918 en_err(priv, "Failed disabling promiscuous mode\n");
922 /* Enable port VLAN filter */
923 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
925 en_err(priv, "Failed enabling VLAN filter\n");
928 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
929 struct net_device *dev,
930 struct mlx4_en_dev *mdev)
932 struct mlx4_en_mc_list *mclist, *tmp;
934 u8 mc_list[16] = {0};
937 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
938 if (dev->flags & IFF_ALLMULTI) {
939 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
940 0, MLX4_MCAST_DISABLE);
942 en_err(priv, "Failed disabling multicast filter\n");
944 /* Add the default qp number as multicast promisc */
945 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
946 switch (mdev->dev->caps.steering_mode) {
947 case MLX4_STEERING_MODE_DEVICE_MANAGED:
948 err = mlx4_flow_steer_promisc_add(mdev->dev,
954 case MLX4_STEERING_MODE_B0:
955 err = mlx4_multicast_promisc_add(mdev->dev,
960 case MLX4_STEERING_MODE_A0:
964 en_err(priv, "Failed entering multicast promisc mode\n");
965 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
968 /* Disable Multicast promisc */
969 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
970 switch (mdev->dev->caps.steering_mode) {
971 case MLX4_STEERING_MODE_DEVICE_MANAGED:
972 err = mlx4_flow_steer_promisc_remove(mdev->dev,
977 case MLX4_STEERING_MODE_B0:
978 err = mlx4_multicast_promisc_remove(mdev->dev,
983 case MLX4_STEERING_MODE_A0:
987 en_err(priv, "Failed disabling multicast promiscuous mode\n");
988 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
991 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
992 0, MLX4_MCAST_DISABLE);
994 en_err(priv, "Failed disabling multicast filter\n");
996 /* Flush mcast filter and init it with broadcast address */
997 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
998 1, MLX4_MCAST_CONFIG);
1000 /* Update multicast list - we cache all addresses so they won't
1001 * change while HW is updated holding the command semaphor */
1002 netif_addr_lock_bh(dev);
1003 mlx4_en_cache_mclist(dev);
1004 netif_addr_unlock_bh(dev);
1005 list_for_each_entry(mclist, &priv->mc_list, list) {
1006 mcast_addr = mlx4_en_mac_to_u64(mclist->addr);
1007 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1008 mcast_addr, 0, MLX4_MCAST_CONFIG);
1010 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1011 0, MLX4_MCAST_ENABLE);
1013 en_err(priv, "Failed enabling multicast filter\n");
1015 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1016 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1017 if (mclist->action == MCLIST_REM) {
1018 /* detach this address and delete from list */
1019 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1020 mc_list[5] = priv->port;
1021 err = mlx4_multicast_detach(mdev->dev,
1022 &priv->rss_map.indir_qp,
1027 en_err(priv, "Fail to detach multicast address\n");
1029 /* remove from list */
1030 list_del(&mclist->list);
1032 } else if (mclist->action == MCLIST_ADD) {
1033 /* attach the address */
1034 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1035 /* needed for B0 steering support */
1036 mc_list[5] = priv->port;
1037 err = mlx4_multicast_attach(mdev->dev,
1038 &priv->rss_map.indir_qp,
1044 en_err(priv, "Fail to attach multicast address\n");
1051 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1052 struct net_device *dev,
1053 struct mlx4_en_dev *mdev)
1055 struct netdev_hw_addr *ha;
1056 struct mlx4_mac_entry *entry;
1057 struct hlist_node *tmp;
1061 struct hlist_head *bucket;
1066 /* Note that we do not need to protect our mac_hash traversal with rcu,
1067 * since all modification code is protected by mdev->state_lock
1070 /* find what to remove */
1071 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1072 bucket = &priv->mac_hash[i];
1073 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1075 netdev_for_each_uc_addr(ha, dev) {
1076 if (ether_addr_equal_64bits(entry->mac,
1083 /* MAC address of the port is not in uc list */
1084 if (ether_addr_equal_64bits(entry->mac, dev->dev_addr))
1088 mac = mlx4_en_mac_to_u64(entry->mac);
1089 mlx4_en_uc_steer_release(priv, entry->mac,
1092 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1094 hlist_del_rcu(&entry->hlist);
1095 kfree_rcu(entry, rcu);
1096 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1097 entry->mac, priv->port);
1103 /* if we didn't remove anything, there is no use in trying to add
1104 * again once we are in a forced promisc mode state
1106 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1109 prev_flags = priv->flags;
1110 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1112 /* find what to add */
1113 netdev_for_each_uc_addr(ha, dev) {
1115 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1116 hlist_for_each_entry(entry, bucket, hlist) {
1117 if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1124 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1126 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1127 ha->addr, priv->port);
1128 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1131 mac = mlx4_en_mac_to_u64(ha->addr);
1132 memcpy(entry->mac, ha->addr, ETH_ALEN);
1133 err = mlx4_register_mac(mdev->dev, priv->port, mac);
1135 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1136 ha->addr, priv->port, err);
1138 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1141 err = mlx4_en_uc_steer_add(priv, ha->addr,
1145 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1146 ha->addr, priv->port, err);
1147 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1149 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1152 unsigned int mac_hash;
1153 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1154 ha->addr, priv->port);
1155 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1156 bucket = &priv->mac_hash[mac_hash];
1157 hlist_add_head_rcu(&entry->hlist, bucket);
1162 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1163 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1165 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1166 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1171 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1173 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1175 struct mlx4_en_dev *mdev = priv->mdev;
1176 struct net_device *dev = priv->dev;
1178 mutex_lock(&mdev->state_lock);
1179 if (!mdev->device_up) {
1180 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1183 if (!priv->port_up) {
1184 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1188 if (!netif_carrier_ok(dev)) {
1189 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1190 if (priv->port_state.link_state) {
1191 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1192 netif_carrier_on(dev);
1193 en_dbg(LINK, priv, "Link Up\n");
1198 if (dev->priv_flags & IFF_UNICAST_FLT)
1199 mlx4_en_do_uc_filter(priv, dev, mdev);
1201 /* Promsicuous mode: disable all filters */
1202 if ((dev->flags & IFF_PROMISC) ||
1203 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1204 mlx4_en_set_promisc_mode(priv, mdev);
1208 /* Not in promiscuous mode */
1209 if (priv->flags & MLX4_EN_FLAG_PROMISC)
1210 mlx4_en_clear_promisc_mode(priv, mdev);
1212 mlx4_en_do_multicast(priv, dev, mdev);
1214 mutex_unlock(&mdev->state_lock);
1217 #ifdef CONFIG_NET_POLL_CONTROLLER
1218 static void mlx4_en_netpoll(struct net_device *dev)
1220 struct mlx4_en_priv *priv = netdev_priv(dev);
1221 struct mlx4_en_cq *cq;
1222 unsigned long flags;
1225 for (i = 0; i < priv->rx_ring_num; i++) {
1226 cq = &priv->rx_cq[i];
1227 spin_lock_irqsave(&cq->lock, flags);
1228 napi_synchronize(&cq->napi);
1229 mlx4_en_process_rx_cq(dev, cq, 0);
1230 spin_unlock_irqrestore(&cq->lock, flags);
1235 static void mlx4_en_tx_timeout(struct net_device *dev)
1237 struct mlx4_en_priv *priv = netdev_priv(dev);
1238 struct mlx4_en_dev *mdev = priv->mdev;
1240 if (netif_msg_timer(priv))
1241 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1243 priv->port_stats.tx_timeout++;
1244 en_dbg(DRV, priv, "Scheduling watchdog\n");
1245 queue_work(mdev->workqueue, &priv->watchdog_task);
1249 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1251 struct mlx4_en_priv *priv = netdev_priv(dev);
1253 spin_lock_bh(&priv->stats_lock);
1254 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1255 spin_unlock_bh(&priv->stats_lock);
1257 return &priv->ret_stats;
1260 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1262 struct mlx4_en_cq *cq;
1265 /* If we haven't received a specific coalescing setting
1266 * (module param), we set the moderation parameters as follows:
1267 * - moder_cnt is set to the number of mtu sized packets to
1268 * satisfy our coalescing target.
1269 * - moder_time is set to a fixed value.
1271 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1272 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1273 priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1274 priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1275 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1276 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1278 /* Setup cq moderation params */
1279 for (i = 0; i < priv->rx_ring_num; i++) {
1280 cq = &priv->rx_cq[i];
1281 cq->moder_cnt = priv->rx_frames;
1282 cq->moder_time = priv->rx_usecs;
1283 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1284 priv->last_moder_packets[i] = 0;
1285 priv->last_moder_bytes[i] = 0;
1288 for (i = 0; i < priv->tx_ring_num; i++) {
1289 cq = &priv->tx_cq[i];
1290 cq->moder_cnt = priv->tx_frames;
1291 cq->moder_time = priv->tx_usecs;
1294 /* Reset auto-moderation params */
1295 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1296 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1297 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1298 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1299 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1300 priv->adaptive_rx_coal = 1;
1301 priv->last_moder_jiffies = 0;
1302 priv->last_moder_tx_packets = 0;
1305 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1307 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1308 struct mlx4_en_cq *cq;
1309 unsigned long packets;
1311 unsigned long avg_pkt_size;
1312 unsigned long rx_packets;
1313 unsigned long rx_bytes;
1314 unsigned long rx_pkt_diff;
1318 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1321 for (ring = 0; ring < priv->rx_ring_num; ring++) {
1322 spin_lock_bh(&priv->stats_lock);
1323 rx_packets = priv->rx_ring[ring].packets;
1324 rx_bytes = priv->rx_ring[ring].bytes;
1325 spin_unlock_bh(&priv->stats_lock);
1327 rx_pkt_diff = ((unsigned long) (rx_packets -
1328 priv->last_moder_packets[ring]));
1329 packets = rx_pkt_diff;
1330 rate = packets * HZ / period;
1331 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1332 priv->last_moder_bytes[ring])) / packets : 0;
1334 /* Apply auto-moderation only when packet rate
1335 * exceeds a rate that it matters */
1336 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1337 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1338 if (rate < priv->pkt_rate_low)
1339 moder_time = priv->rx_usecs_low;
1340 else if (rate > priv->pkt_rate_high)
1341 moder_time = priv->rx_usecs_high;
1343 moder_time = (rate - priv->pkt_rate_low) *
1344 (priv->rx_usecs_high - priv->rx_usecs_low) /
1345 (priv->pkt_rate_high - priv->pkt_rate_low) +
1348 moder_time = priv->rx_usecs_low;
1351 if (moder_time != priv->last_moder_time[ring]) {
1352 priv->last_moder_time[ring] = moder_time;
1353 cq = &priv->rx_cq[ring];
1354 cq->moder_time = moder_time;
1355 cq->moder_cnt = priv->rx_frames;
1356 err = mlx4_en_set_cq_moder(priv, cq);
1358 en_err(priv, "Failed modifying moderation for cq:%d\n",
1361 priv->last_moder_packets[ring] = rx_packets;
1362 priv->last_moder_bytes[ring] = rx_bytes;
1365 priv->last_moder_jiffies = jiffies;
1368 static void mlx4_en_do_get_stats(struct work_struct *work)
1370 struct delayed_work *delay = to_delayed_work(work);
1371 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1373 struct mlx4_en_dev *mdev = priv->mdev;
1376 mutex_lock(&mdev->state_lock);
1377 if (mdev->device_up) {
1378 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1380 en_dbg(HW, priv, "Could not update stats\n");
1383 mlx4_en_auto_moderation(priv);
1385 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1387 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1388 mlx4_en_do_set_mac(priv);
1389 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1391 mutex_unlock(&mdev->state_lock);
1394 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1397 static void mlx4_en_service_task(struct work_struct *work)
1399 struct delayed_work *delay = to_delayed_work(work);
1400 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1402 struct mlx4_en_dev *mdev = priv->mdev;
1404 mutex_lock(&mdev->state_lock);
1405 if (mdev->device_up) {
1406 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1407 mlx4_en_ptp_overflow_check(mdev);
1409 queue_delayed_work(mdev->workqueue, &priv->service_task,
1410 SERVICE_TASK_DELAY);
1412 mutex_unlock(&mdev->state_lock);
1415 static void mlx4_en_linkstate(struct work_struct *work)
1417 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1419 struct mlx4_en_dev *mdev = priv->mdev;
1420 int linkstate = priv->link_state;
1422 mutex_lock(&mdev->state_lock);
1423 /* If observable port state changed set carrier state and
1424 * report to system log */
1425 if (priv->last_link_state != linkstate) {
1426 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1427 en_info(priv, "Link Down\n");
1428 netif_carrier_off(priv->dev);
1430 en_info(priv, "Link Up\n");
1431 netif_carrier_on(priv->dev);
1434 priv->last_link_state = linkstate;
1435 mutex_unlock(&mdev->state_lock);
1439 int mlx4_en_start_port(struct net_device *dev)
1441 struct mlx4_en_priv *priv = netdev_priv(dev);
1442 struct mlx4_en_dev *mdev = priv->mdev;
1443 struct mlx4_en_cq *cq;
1444 struct mlx4_en_tx_ring *tx_ring;
1450 u8 mc_list[16] = {0};
1452 if (priv->port_up) {
1453 en_dbg(DRV, priv, "start port called while port already up\n");
1457 INIT_LIST_HEAD(&priv->mc_list);
1458 INIT_LIST_HEAD(&priv->curr_list);
1459 INIT_LIST_HEAD(&priv->ethtool_list);
1460 memset(&priv->ethtool_rules[0], 0,
1461 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1463 /* Calculate Rx buf size */
1464 dev->mtu = min(dev->mtu, priv->max_mtu);
1465 mlx4_en_calc_rx_buf(dev);
1466 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1468 /* Configure rx cq's and rings */
1469 err = mlx4_en_activate_rx_rings(priv);
1471 en_err(priv, "Failed to activate RX rings\n");
1474 for (i = 0; i < priv->rx_ring_num; i++) {
1475 cq = &priv->rx_cq[i];
1477 mlx4_en_cq_init_lock(cq);
1479 err = mlx4_en_activate_cq(priv, cq, i);
1481 en_err(priv, "Failed activating Rx CQ\n");
1484 for (j = 0; j < cq->size; j++)
1485 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1486 err = mlx4_en_set_cq_moder(priv, cq);
1488 en_err(priv, "Failed setting cq moderation parameters");
1489 mlx4_en_deactivate_cq(priv, cq);
1492 mlx4_en_arm_cq(priv, cq);
1493 priv->rx_ring[i].cqn = cq->mcq.cqn;
1498 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1499 err = mlx4_en_get_qp(priv);
1501 en_err(priv, "Failed getting eth qp\n");
1504 mdev->mac_removed[priv->port] = 0;
1506 err = mlx4_en_config_rss_steer(priv);
1508 en_err(priv, "Failed configuring rss steering\n");
1512 err = mlx4_en_create_drop_qp(priv);
1516 /* Configure tx cq's and rings */
1517 for (i = 0; i < priv->tx_ring_num; i++) {
1519 cq = &priv->tx_cq[i];
1520 err = mlx4_en_activate_cq(priv, cq, i);
1522 en_err(priv, "Failed allocating Tx CQ\n");
1525 err = mlx4_en_set_cq_moder(priv, cq);
1527 en_err(priv, "Failed setting cq moderation parameters");
1528 mlx4_en_deactivate_cq(priv, cq);
1531 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1532 cq->buf->wqe_index = cpu_to_be16(0xffff);
1534 /* Configure ring */
1535 tx_ring = &priv->tx_ring[i];
1536 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1537 i / priv->num_tx_rings_p_up);
1539 en_err(priv, "Failed allocating Tx ring\n");
1540 mlx4_en_deactivate_cq(priv, cq);
1543 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1545 /* Arm CQ for TX completions */
1546 mlx4_en_arm_cq(priv, cq);
1548 /* Set initial ownership of all Tx TXBBs to SW (1) */
1549 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1550 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1554 /* Configure port */
1555 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1556 priv->rx_skb_size + ETH_FCS_LEN,
1557 priv->prof->tx_pause,
1559 priv->prof->rx_pause,
1560 priv->prof->rx_ppp);
1562 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1566 /* Set default qp number */
1567 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1569 en_err(priv, "Failed setting default qp numbers\n");
1574 en_dbg(HW, priv, "Initializing port\n");
1575 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1577 en_err(priv, "Failed Initializing port\n");
1581 /* Attach rx QP to bradcast address */
1582 memset(&mc_list[10], 0xff, ETH_ALEN);
1583 mc_list[5] = priv->port; /* needed for B0 steering support */
1584 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1585 priv->port, 0, MLX4_PROT_ETH,
1586 &priv->broadcast_id))
1587 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1589 /* Must redo promiscuous mode setup. */
1590 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1592 /* Schedule multicast task to populate multicast list */
1593 queue_work(mdev->workqueue, &priv->rx_mode_task);
1595 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1597 priv->port_up = true;
1598 netif_tx_start_all_queues(dev);
1599 netif_device_attach(dev);
1604 while (tx_index--) {
1605 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
1606 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
1608 mlx4_en_destroy_drop_qp(priv);
1610 mlx4_en_release_rss_steer(priv);
1612 mlx4_en_put_qp(priv);
1615 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
1616 for (i = 0; i < priv->rx_ring_num; i++)
1617 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1619 return err; /* need to close devices */
1623 void mlx4_en_stop_port(struct net_device *dev, int detach)
1625 struct mlx4_en_priv *priv = netdev_priv(dev);
1626 struct mlx4_en_dev *mdev = priv->mdev;
1627 struct mlx4_en_mc_list *mclist, *tmp;
1628 struct ethtool_flow_id *flow, *tmp_flow;
1630 u8 mc_list[16] = {0};
1632 if (!priv->port_up) {
1633 en_dbg(DRV, priv, "stop port called while port already down\n");
1637 /* Synchronize with tx routine */
1638 netif_tx_lock_bh(dev);
1640 netif_device_detach(dev);
1641 netif_tx_stop_all_queues(dev);
1642 netif_tx_unlock_bh(dev);
1644 netif_tx_disable(dev);
1646 /* Set port as not active */
1647 priv->port_up = false;
1649 /* Promsicuous mode */
1650 if (mdev->dev->caps.steering_mode ==
1651 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1652 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1653 MLX4_EN_FLAG_MC_PROMISC);
1654 mlx4_flow_steer_promisc_remove(mdev->dev,
1656 MLX4_FS_ALL_DEFAULT);
1657 mlx4_flow_steer_promisc_remove(mdev->dev,
1659 MLX4_FS_MC_DEFAULT);
1660 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1661 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1663 /* Disable promiscouos mode */
1664 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1667 /* Disable Multicast promisc */
1668 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1669 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1671 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1675 /* Detach All multicasts */
1676 memset(&mc_list[10], 0xff, ETH_ALEN);
1677 mc_list[5] = priv->port; /* needed for B0 steering support */
1678 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1679 MLX4_PROT_ETH, priv->broadcast_id);
1680 list_for_each_entry(mclist, &priv->curr_list, list) {
1681 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1682 mc_list[5] = priv->port;
1683 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1684 mc_list, MLX4_PROT_ETH, mclist->reg_id);
1686 mlx4_en_clear_list(dev);
1687 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1688 list_del(&mclist->list);
1692 /* Flush multicast filter */
1693 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1695 /* Remove flow steering rules for the port*/
1696 if (mdev->dev->caps.steering_mode ==
1697 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1699 list_for_each_entry_safe(flow, tmp_flow,
1700 &priv->ethtool_list, list) {
1701 mlx4_flow_detach(mdev->dev, flow->id);
1702 list_del(&flow->list);
1706 mlx4_en_destroy_drop_qp(priv);
1709 for (i = 0; i < priv->tx_ring_num; i++) {
1710 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
1711 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
1715 for (i = 0; i < priv->tx_ring_num; i++)
1716 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
1719 mlx4_en_release_rss_steer(priv);
1721 /* Unregister Mac address for the port */
1722 mlx4_en_put_qp(priv);
1723 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAGS2_REASSIGN_MAC_EN))
1724 mdev->mac_removed[priv->port] = 1;
1727 for (i = 0; i < priv->rx_ring_num; i++) {
1728 struct mlx4_en_cq *cq = &priv->rx_cq[i];
1731 while (!mlx4_en_cq_lock_napi(cq)) {
1732 pr_info("CQ %d locked\n", i);
1737 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1738 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state))
1740 mlx4_en_deactivate_cq(priv, cq);
1744 mlx4_CLOSE_PORT(mdev->dev, priv->port);
1747 static void mlx4_en_restart(struct work_struct *work)
1749 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1751 struct mlx4_en_dev *mdev = priv->mdev;
1752 struct net_device *dev = priv->dev;
1754 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1756 mutex_lock(&mdev->state_lock);
1757 if (priv->port_up) {
1758 mlx4_en_stop_port(dev, 1);
1759 if (mlx4_en_start_port(dev))
1760 en_err(priv, "Failed restarting port %d\n", priv->port);
1762 mutex_unlock(&mdev->state_lock);
1765 static void mlx4_en_clear_stats(struct net_device *dev)
1767 struct mlx4_en_priv *priv = netdev_priv(dev);
1768 struct mlx4_en_dev *mdev = priv->mdev;
1771 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1772 en_dbg(HW, priv, "Failed dumping statistics\n");
1774 memset(&priv->stats, 0, sizeof(priv->stats));
1775 memset(&priv->pstats, 0, sizeof(priv->pstats));
1776 memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1777 memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1779 for (i = 0; i < priv->tx_ring_num; i++) {
1780 priv->tx_ring[i].bytes = 0;
1781 priv->tx_ring[i].packets = 0;
1782 priv->tx_ring[i].tx_csum = 0;
1784 for (i = 0; i < priv->rx_ring_num; i++) {
1785 priv->rx_ring[i].bytes = 0;
1786 priv->rx_ring[i].packets = 0;
1787 priv->rx_ring[i].csum_ok = 0;
1788 priv->rx_ring[i].csum_none = 0;
1792 static int mlx4_en_open(struct net_device *dev)
1794 struct mlx4_en_priv *priv = netdev_priv(dev);
1795 struct mlx4_en_dev *mdev = priv->mdev;
1798 mutex_lock(&mdev->state_lock);
1800 if (!mdev->device_up) {
1801 en_err(priv, "Cannot open - device down/disabled\n");
1806 /* Reset HW statistics and SW counters */
1807 mlx4_en_clear_stats(dev);
1809 err = mlx4_en_start_port(dev);
1811 en_err(priv, "Failed starting port:%d\n", priv->port);
1814 mutex_unlock(&mdev->state_lock);
1819 static int mlx4_en_close(struct net_device *dev)
1821 struct mlx4_en_priv *priv = netdev_priv(dev);
1822 struct mlx4_en_dev *mdev = priv->mdev;
1824 en_dbg(IFDOWN, priv, "Close port called\n");
1826 mutex_lock(&mdev->state_lock);
1828 mlx4_en_stop_port(dev, 0);
1829 netif_carrier_off(dev);
1831 mutex_unlock(&mdev->state_lock);
1835 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1839 #ifdef CONFIG_RFS_ACCEL
1840 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1841 priv->dev->rx_cpu_rmap = NULL;
1844 for (i = 0; i < priv->tx_ring_num; i++) {
1845 if (priv->tx_ring[i].tx_info)
1846 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1847 if (priv->tx_cq[i].buf)
1848 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1851 for (i = 0; i < priv->rx_ring_num; i++) {
1852 if (priv->rx_ring[i].rx_info)
1853 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1854 priv->prof->rx_ring_size, priv->stride);
1855 if (priv->rx_cq[i].buf)
1856 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1859 if (priv->base_tx_qpn) {
1860 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1861 priv->base_tx_qpn = 0;
1865 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1867 struct mlx4_en_port_profile *prof = priv->prof;
1871 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1873 en_err(priv, "failed reserving range for TX rings\n");
1877 /* Create tx Rings */
1878 for (i = 0; i < priv->tx_ring_num; i++) {
1879 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1880 prof->tx_ring_size, i, TX))
1883 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], priv->base_tx_qpn + i,
1884 prof->tx_ring_size, TXBB_SIZE))
1888 /* Create rx Rings */
1889 for (i = 0; i < priv->rx_ring_num; i++) {
1890 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1891 prof->rx_ring_size, i, RX))
1894 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1895 prof->rx_ring_size, priv->stride))
1899 #ifdef CONFIG_RFS_ACCEL
1900 if (priv->mdev->dev->caps.comp_pool) {
1901 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
1902 if (!priv->dev->rx_cpu_rmap)
1910 en_err(priv, "Failed to allocate NIC resources\n");
1915 void mlx4_en_destroy_netdev(struct net_device *dev)
1917 struct mlx4_en_priv *priv = netdev_priv(dev);
1918 struct mlx4_en_dev *mdev = priv->mdev;
1920 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1922 /* Unregister device - this will close the port if it was up */
1923 if (priv->registered)
1924 unregister_netdev(dev);
1926 if (priv->allocated)
1927 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1929 cancel_delayed_work(&priv->stats_task);
1930 cancel_delayed_work(&priv->service_task);
1931 /* flush any pending task for this netdev */
1932 flush_workqueue(mdev->workqueue);
1934 /* Detach the netdev so tasks would not attempt to access it */
1935 mutex_lock(&mdev->state_lock);
1936 mdev->pndev[priv->port] = NULL;
1937 mutex_unlock(&mdev->state_lock);
1939 mlx4_en_free_resources(priv);
1941 kfree(priv->tx_ring);
1947 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1949 struct mlx4_en_priv *priv = netdev_priv(dev);
1950 struct mlx4_en_dev *mdev = priv->mdev;
1953 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
1956 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1957 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
1962 if (netif_running(dev)) {
1963 mutex_lock(&mdev->state_lock);
1964 if (!mdev->device_up) {
1965 /* NIC is probably restarting - let watchdog task reset
1967 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1969 mlx4_en_stop_port(dev, 1);
1970 err = mlx4_en_start_port(dev);
1972 en_err(priv, "Failed restarting port:%d\n",
1974 queue_work(mdev->workqueue, &priv->watchdog_task);
1977 mutex_unlock(&mdev->state_lock);
1982 static int mlx4_en_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr)
1984 struct mlx4_en_priv *priv = netdev_priv(dev);
1985 struct mlx4_en_dev *mdev = priv->mdev;
1986 struct hwtstamp_config config;
1988 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
1991 /* reserved for future extensions */
1995 /* device doesn't support time stamping */
1996 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
1999 /* TX HW timestamp */
2000 switch (config.tx_type) {
2001 case HWTSTAMP_TX_OFF:
2002 case HWTSTAMP_TX_ON:
2008 /* RX HW timestamp */
2009 switch (config.rx_filter) {
2010 case HWTSTAMP_FILTER_NONE:
2012 case HWTSTAMP_FILTER_ALL:
2013 case HWTSTAMP_FILTER_SOME:
2014 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2015 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2016 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2017 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2018 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2019 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2020 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2021 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2022 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2023 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2024 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2025 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2026 config.rx_filter = HWTSTAMP_FILTER_ALL;
2032 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
2033 config.tx_type = HWTSTAMP_TX_OFF;
2034 config.rx_filter = HWTSTAMP_FILTER_NONE;
2037 return copy_to_user(ifr->ifr_data, &config,
2038 sizeof(config)) ? -EFAULT : 0;
2041 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2045 return mlx4_en_hwtstamp_ioctl(dev, ifr);
2051 static int mlx4_en_set_features(struct net_device *netdev,
2052 netdev_features_t features)
2054 struct mlx4_en_priv *priv = netdev_priv(netdev);
2056 if (features & NETIF_F_LOOPBACK)
2057 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2060 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2062 mlx4_en_update_loopback_state(netdev, features);
2068 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2070 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2071 struct mlx4_en_dev *mdev = en_priv->mdev;
2072 u64 mac_u64 = mlx4_en_mac_to_u64(mac);
2074 if (!is_valid_ether_addr(mac))
2077 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2080 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2082 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2083 struct mlx4_en_dev *mdev = en_priv->mdev;
2085 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2088 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2090 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2091 struct mlx4_en_dev *mdev = en_priv->mdev;
2093 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2096 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2098 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2099 struct mlx4_en_dev *mdev = en_priv->mdev;
2101 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2104 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2106 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2107 struct mlx4_en_dev *mdev = en_priv->mdev;
2109 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2111 static const struct net_device_ops mlx4_netdev_ops = {
2112 .ndo_open = mlx4_en_open,
2113 .ndo_stop = mlx4_en_close,
2114 .ndo_start_xmit = mlx4_en_xmit,
2115 .ndo_select_queue = mlx4_en_select_queue,
2116 .ndo_get_stats = mlx4_en_get_stats,
2117 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2118 .ndo_set_mac_address = mlx4_en_set_mac,
2119 .ndo_validate_addr = eth_validate_addr,
2120 .ndo_change_mtu = mlx4_en_change_mtu,
2121 .ndo_do_ioctl = mlx4_en_ioctl,
2122 .ndo_tx_timeout = mlx4_en_tx_timeout,
2123 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2124 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2125 #ifdef CONFIG_NET_POLL_CONTROLLER
2126 .ndo_poll_controller = mlx4_en_netpoll,
2128 .ndo_set_features = mlx4_en_set_features,
2129 .ndo_setup_tc = mlx4_en_setup_tc,
2130 #ifdef CONFIG_RFS_ACCEL
2131 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2133 #ifdef CONFIG_NET_LL_RX_POLL
2134 .ndo_ll_poll = mlx4_en_low_latency_recv,
2138 static const struct net_device_ops mlx4_netdev_ops_master = {
2139 .ndo_open = mlx4_en_open,
2140 .ndo_stop = mlx4_en_close,
2141 .ndo_start_xmit = mlx4_en_xmit,
2142 .ndo_select_queue = mlx4_en_select_queue,
2143 .ndo_get_stats = mlx4_en_get_stats,
2144 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2145 .ndo_set_mac_address = mlx4_en_set_mac,
2146 .ndo_validate_addr = eth_validate_addr,
2147 .ndo_change_mtu = mlx4_en_change_mtu,
2148 .ndo_tx_timeout = mlx4_en_tx_timeout,
2149 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2150 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2151 .ndo_set_vf_mac = mlx4_en_set_vf_mac,
2152 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2153 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2154 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2155 .ndo_get_vf_config = mlx4_en_get_vf_config,
2156 #ifdef CONFIG_NET_POLL_CONTROLLER
2157 .ndo_poll_controller = mlx4_en_netpoll,
2159 .ndo_set_features = mlx4_en_set_features,
2160 .ndo_setup_tc = mlx4_en_setup_tc,
2161 #ifdef CONFIG_RFS_ACCEL
2162 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2166 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2167 struct mlx4_en_port_profile *prof)
2169 struct net_device *dev;
2170 struct mlx4_en_priv *priv;
2175 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2176 MAX_TX_RINGS, MAX_RX_RINGS);
2180 netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2181 netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2183 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2184 dev->dev_id = port - 1;
2187 * Initialize driver private data
2190 priv = netdev_priv(dev);
2191 memset(priv, 0, sizeof(struct mlx4_en_priv));
2194 priv->ddev = &mdev->pdev->dev;
2197 priv->port_up = false;
2198 priv->flags = prof->flags;
2199 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2200 MLX4_WQE_CTRL_SOLICITED);
2201 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2202 priv->tx_ring_num = prof->tx_ring_num;
2204 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring) * MAX_TX_RINGS,
2206 if (!priv->tx_ring) {
2210 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq) * MAX_TX_RINGS,
2216 priv->rx_ring_num = prof->rx_ring_num;
2217 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2218 priv->mac_index = -1;
2219 priv->msg_enable = MLX4_EN_MSG_LEVEL;
2220 spin_lock_init(&priv->stats_lock);
2221 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2222 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2223 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2224 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2225 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2226 #ifdef CONFIG_MLX4_EN_DCB
2227 if (!mlx4_is_slave(priv->mdev->dev)) {
2228 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2229 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2231 en_info(priv, "enabling only PFC DCB ops\n");
2232 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2237 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2238 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2240 /* Query for default mac and max mtu */
2241 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2243 /* Set default MAC */
2244 dev->addr_len = ETH_ALEN;
2245 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2246 if (!is_valid_ether_addr(dev->dev_addr)) {
2247 if (mlx4_is_slave(priv->mdev->dev)) {
2248 eth_hw_addr_random(dev);
2249 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2250 mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr);
2251 mdev->dev->caps.def_mac[priv->port] = mac_u64;
2253 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2254 priv->port, dev->dev_addr);
2260 memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
2262 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2263 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2264 err = mlx4_en_alloc_resources(priv);
2268 #ifdef CONFIG_RFS_ACCEL
2269 INIT_LIST_HEAD(&priv->filters);
2270 spin_lock_init(&priv->filters_lock);
2273 /* Initialize time stamping config */
2274 priv->hwtstamp_config.flags = 0;
2275 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2276 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2278 /* Allocate page for receive rings */
2279 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2280 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2282 en_err(priv, "Failed to allocate page for rx qps\n");
2285 priv->allocated = 1;
2288 * Initialize netdev entry points
2290 if (mlx4_is_master(priv->mdev->dev))
2291 dev->netdev_ops = &mlx4_netdev_ops_master;
2293 dev->netdev_ops = &mlx4_netdev_ops;
2294 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2295 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2296 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2298 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
2301 * Set driver features
2303 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2304 if (mdev->LSO_support)
2305 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2307 dev->vlan_features = dev->hw_features;
2309 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2310 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2311 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2312 NETIF_F_HW_VLAN_CTAG_FILTER;
2313 dev->hw_features |= NETIF_F_LOOPBACK;
2315 if (mdev->dev->caps.steering_mode ==
2316 MLX4_STEERING_MODE_DEVICE_MANAGED)
2317 dev->hw_features |= NETIF_F_NTUPLE;
2319 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2320 dev->priv_flags |= IFF_UNICAST_FLT;
2322 mdev->pndev[port] = dev;
2324 netif_carrier_off(dev);
2325 err = register_netdev(dev);
2327 en_err(priv, "Netdev registration failed for port %d\n", port);
2330 priv->registered = 1;
2332 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2333 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2335 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2337 /* Configure port */
2338 mlx4_en_calc_rx_buf(dev);
2339 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2340 priv->rx_skb_size + ETH_FCS_LEN,
2341 prof->tx_pause, prof->tx_ppp,
2342 prof->rx_pause, prof->rx_ppp);
2344 en_err(priv, "Failed setting port general configurations "
2345 "for port %d, with error %d\n", priv->port, err);
2350 en_warn(priv, "Initializing port\n");
2351 err = mlx4_INIT_PORT(mdev->dev, priv->port);
2353 en_err(priv, "Failed Initializing port\n");
2356 mlx4_en_set_default_moderation(priv);
2357 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2359 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2360 queue_delayed_work(mdev->workqueue, &priv->service_task,
2361 SERVICE_TASK_DELAY);
2366 mlx4_en_destroy_netdev(dev);