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/busy_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_RX_BUSY_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_RX_BUSY_POLL */
99 #ifdef CONFIG_RFS_ACCEL
101 struct mlx4_en_filter {
102 struct list_head next;
103 struct work_struct work;
112 struct mlx4_en_priv *priv;
113 u32 flow_id; /* RFS infrastructure id */
114 int id; /* mlx4_en driver id */
115 u64 reg_id; /* Flow steering API id */
116 u8 activated; /* Used to prevent expiry before filter
119 struct hlist_node filter_chain;
122 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
124 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
128 return MLX4_NET_TRANS_RULE_ID_UDP;
130 return MLX4_NET_TRANS_RULE_ID_TCP;
132 return -EPROTONOSUPPORT;
136 static void mlx4_en_filter_work(struct work_struct *work)
138 struct mlx4_en_filter *filter = container_of(work,
139 struct mlx4_en_filter,
141 struct mlx4_en_priv *priv = filter->priv;
142 struct mlx4_spec_list spec_tcp_udp = {
143 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
146 .dst_port = filter->dst_port,
147 .dst_port_msk = (__force __be16)-1,
148 .src_port = filter->src_port,
149 .src_port_msk = (__force __be16)-1,
153 struct mlx4_spec_list spec_ip = {
154 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
157 .dst_ip = filter->dst_ip,
158 .dst_ip_msk = (__force __be32)-1,
159 .src_ip = filter->src_ip,
160 .src_ip_msk = (__force __be32)-1,
164 struct mlx4_spec_list spec_eth = {
165 .id = MLX4_NET_TRANS_RULE_ID_ETH,
167 struct mlx4_net_trans_rule rule = {
168 .list = LIST_HEAD_INIT(rule.list),
169 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
172 .promisc_mode = MLX4_FS_REGULAR,
174 .priority = MLX4_DOMAIN_RFS,
177 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
179 if (spec_tcp_udp.id < 0) {
180 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
184 list_add_tail(&spec_eth.list, &rule.list);
185 list_add_tail(&spec_ip.list, &rule.list);
186 list_add_tail(&spec_tcp_udp.list, &rule.list);
188 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
189 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
190 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
192 filter->activated = 0;
194 if (filter->reg_id) {
195 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
196 if (rc && rc != -ENOENT)
197 en_err(priv, "Error detaching flow. rc = %d\n", rc);
200 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
202 en_err(priv, "Error attaching flow. err = %d\n", rc);
205 mlx4_en_filter_rfs_expire(priv);
207 filter->activated = 1;
210 static inline struct hlist_head *
211 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
212 __be16 src_port, __be16 dst_port)
217 l = (__force unsigned long)src_port |
218 ((__force unsigned long)dst_port << 2);
219 l ^= (__force unsigned long)(src_ip ^ dst_ip);
221 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
223 return &priv->filter_hash[bucket_idx];
226 static struct mlx4_en_filter *
227 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
228 __be32 dst_ip, u8 ip_proto, __be16 src_port,
229 __be16 dst_port, u32 flow_id)
231 struct mlx4_en_filter *filter = NULL;
233 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
238 filter->rxq_index = rxq_index;
239 INIT_WORK(&filter->work, mlx4_en_filter_work);
241 filter->src_ip = src_ip;
242 filter->dst_ip = dst_ip;
243 filter->ip_proto = ip_proto;
244 filter->src_port = src_port;
245 filter->dst_port = dst_port;
247 filter->flow_id = flow_id;
249 filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
251 list_add_tail(&filter->next, &priv->filters);
252 hlist_add_head(&filter->filter_chain,
253 filter_hash_bucket(priv, src_ip, dst_ip, src_port,
259 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
261 struct mlx4_en_priv *priv = filter->priv;
264 list_del(&filter->next);
266 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
267 if (rc && rc != -ENOENT)
268 en_err(priv, "Error detaching flow. rc = %d\n", rc);
273 static inline struct mlx4_en_filter *
274 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
275 u8 ip_proto, __be16 src_port, __be16 dst_port)
277 struct mlx4_en_filter *filter;
278 struct mlx4_en_filter *ret = NULL;
280 hlist_for_each_entry(filter,
281 filter_hash_bucket(priv, src_ip, dst_ip,
284 if (filter->src_ip == src_ip &&
285 filter->dst_ip == dst_ip &&
286 filter->ip_proto == ip_proto &&
287 filter->src_port == src_port &&
288 filter->dst_port == dst_port) {
298 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
299 u16 rxq_index, u32 flow_id)
301 struct mlx4_en_priv *priv = netdev_priv(net_dev);
302 struct mlx4_en_filter *filter;
303 const struct iphdr *ip;
310 int nhoff = skb_network_offset(skb);
313 if (skb->protocol != htons(ETH_P_IP))
314 return -EPROTONOSUPPORT;
316 ip = (const struct iphdr *)(skb->data + nhoff);
317 if (ip_is_fragment(ip))
318 return -EPROTONOSUPPORT;
320 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
321 return -EPROTONOSUPPORT;
322 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
324 ip_proto = ip->protocol;
330 spin_lock_bh(&priv->filters_lock);
331 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
334 if (filter->rxq_index == rxq_index)
337 filter->rxq_index = rxq_index;
339 filter = mlx4_en_filter_alloc(priv, rxq_index,
340 src_ip, dst_ip, ip_proto,
341 src_port, dst_port, flow_id);
348 queue_work(priv->mdev->workqueue, &filter->work);
353 spin_unlock_bh(&priv->filters_lock);
358 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv,
359 struct mlx4_en_rx_ring *rx_ring)
361 struct mlx4_en_filter *filter, *tmp;
364 spin_lock_bh(&priv->filters_lock);
365 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
366 list_move(&filter->next, &del_list);
367 hlist_del(&filter->filter_chain);
369 spin_unlock_bh(&priv->filters_lock);
371 list_for_each_entry_safe(filter, tmp, &del_list, next) {
372 cancel_work_sync(&filter->work);
373 mlx4_en_filter_free(filter);
377 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
379 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
383 spin_lock_bh(&priv->filters_lock);
384 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
385 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
388 if (filter->activated &&
389 !work_pending(&filter->work) &&
390 rps_may_expire_flow(priv->dev,
391 filter->rxq_index, filter->flow_id,
393 list_move(&filter->next, &del_list);
394 hlist_del(&filter->filter_chain);
396 last_filter = filter;
401 if (last_filter && (&last_filter->next != priv->filters.next))
402 list_move(&priv->filters, &last_filter->next);
404 spin_unlock_bh(&priv->filters_lock);
406 list_for_each_entry_safe(filter, tmp, &del_list, next)
407 mlx4_en_filter_free(filter);
411 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
412 __be16 proto, u16 vid)
414 struct mlx4_en_priv *priv = netdev_priv(dev);
415 struct mlx4_en_dev *mdev = priv->mdev;
419 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
421 set_bit(vid, priv->active_vlans);
423 /* Add VID to port VLAN filter */
424 mutex_lock(&mdev->state_lock);
425 if (mdev->device_up && priv->port_up) {
426 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
428 en_err(priv, "Failed configuring VLAN filter\n");
430 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
431 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
432 mutex_unlock(&mdev->state_lock);
437 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
438 __be16 proto, u16 vid)
440 struct mlx4_en_priv *priv = netdev_priv(dev);
441 struct mlx4_en_dev *mdev = priv->mdev;
444 en_dbg(HW, priv, "Killing VID:%d\n", vid);
446 clear_bit(vid, priv->active_vlans);
448 /* Remove VID from port VLAN filter */
449 mutex_lock(&mdev->state_lock);
450 mlx4_unregister_vlan(mdev->dev, priv->port, vid);
452 if (mdev->device_up && priv->port_up) {
453 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
455 en_err(priv, "Failed configuring VLAN filter\n");
457 mutex_unlock(&mdev->state_lock);
462 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
465 for (i = ETH_ALEN - 1; i >= 0; --i) {
466 dst_mac[i] = src_mac & 0xff;
469 memset(&dst_mac[ETH_ALEN], 0, 2);
472 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
473 unsigned char *mac, int *qpn, u64 *reg_id)
475 struct mlx4_en_dev *mdev = priv->mdev;
476 struct mlx4_dev *dev = mdev->dev;
479 switch (dev->caps.steering_mode) {
480 case MLX4_STEERING_MODE_B0: {
485 memcpy(&gid[10], mac, ETH_ALEN);
488 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
491 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
492 struct mlx4_spec_list spec_eth = { {NULL} };
493 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
495 struct mlx4_net_trans_rule rule = {
496 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
499 .promisc_mode = MLX4_FS_REGULAR,
500 .priority = MLX4_DOMAIN_NIC,
503 rule.port = priv->port;
505 INIT_LIST_HEAD(&rule.list);
507 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
508 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
509 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
510 list_add_tail(&spec_eth.list, &rule.list);
512 err = mlx4_flow_attach(dev, &rule, reg_id);
519 en_warn(priv, "Failed Attaching Unicast\n");
524 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
525 unsigned char *mac, int qpn, u64 reg_id)
527 struct mlx4_en_dev *mdev = priv->mdev;
528 struct mlx4_dev *dev = mdev->dev;
530 switch (dev->caps.steering_mode) {
531 case MLX4_STEERING_MODE_B0: {
536 memcpy(&gid[10], mac, ETH_ALEN);
539 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
542 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
543 mlx4_flow_detach(dev, reg_id);
547 en_err(priv, "Invalid steering mode.\n");
551 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
553 struct mlx4_en_dev *mdev = priv->mdev;
554 struct mlx4_dev *dev = mdev->dev;
555 struct mlx4_mac_entry *entry;
559 int *qpn = &priv->base_qpn;
560 u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
562 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
563 priv->dev->dev_addr);
564 index = mlx4_register_mac(dev, priv->port, mac);
567 en_err(priv, "Failed adding MAC: %pM\n",
568 priv->dev->dev_addr);
572 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
573 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
574 *qpn = base_qpn + index;
578 err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
579 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
581 en_err(priv, "Failed to reserve qp for mac registration\n");
585 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id);
589 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
594 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
595 entry->reg_id = reg_id;
597 hlist_add_head_rcu(&entry->hlist,
598 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
603 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
606 mlx4_qp_release_range(dev, *qpn, 1);
609 mlx4_unregister_mac(dev, priv->port, mac);
613 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
615 struct mlx4_en_dev *mdev = priv->mdev;
616 struct mlx4_dev *dev = mdev->dev;
617 int qpn = priv->base_qpn;
620 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
621 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
622 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
623 priv->dev->dev_addr);
624 mlx4_unregister_mac(dev, priv->port, mac);
626 struct mlx4_mac_entry *entry;
627 struct hlist_node *tmp;
628 struct hlist_head *bucket;
631 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
632 bucket = &priv->mac_hash[i];
633 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
634 mac = mlx4_en_mac_to_u64(entry->mac);
635 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
637 mlx4_en_uc_steer_release(priv, entry->mac,
640 mlx4_unregister_mac(dev, priv->port, mac);
641 hlist_del_rcu(&entry->hlist);
642 kfree_rcu(entry, rcu);
646 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
648 mlx4_qp_release_range(dev, qpn, 1);
649 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
653 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
654 unsigned char *new_mac, unsigned char *prev_mac)
656 struct mlx4_en_dev *mdev = priv->mdev;
657 struct mlx4_dev *dev = mdev->dev;
659 u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac);
661 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
662 struct hlist_head *bucket;
663 unsigned int mac_hash;
664 struct mlx4_mac_entry *entry;
665 struct hlist_node *tmp;
666 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac);
668 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
669 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
670 if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
671 mlx4_en_uc_steer_release(priv, entry->mac,
673 mlx4_unregister_mac(dev, priv->port,
675 hlist_del_rcu(&entry->hlist);
677 memcpy(entry->mac, new_mac, ETH_ALEN);
679 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
680 hlist_add_head_rcu(&entry->hlist,
681 &priv->mac_hash[mac_hash]);
682 mlx4_register_mac(dev, priv->port, new_mac_u64);
683 err = mlx4_en_uc_steer_add(priv, new_mac,
692 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
695 u64 mlx4_en_mac_to_u64(u8 *addr)
700 for (i = 0; i < ETH_ALEN; i++) {
707 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
712 /* Remove old MAC and insert the new one */
713 err = mlx4_en_replace_mac(priv, priv->base_qpn,
714 priv->dev->dev_addr, priv->prev_mac);
716 en_err(priv, "Failed changing HW MAC address\n");
717 memcpy(priv->prev_mac, priv->dev->dev_addr,
718 sizeof(priv->prev_mac));
720 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
725 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
727 struct mlx4_en_priv *priv = netdev_priv(dev);
728 struct mlx4_en_dev *mdev = priv->mdev;
729 struct sockaddr *saddr = addr;
732 if (!is_valid_ether_addr(saddr->sa_data))
733 return -EADDRNOTAVAIL;
735 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
737 mutex_lock(&mdev->state_lock);
738 err = mlx4_en_do_set_mac(priv);
739 mutex_unlock(&mdev->state_lock);
744 static void mlx4_en_clear_list(struct net_device *dev)
746 struct mlx4_en_priv *priv = netdev_priv(dev);
747 struct mlx4_en_mc_list *tmp, *mc_to_del;
749 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
750 list_del(&mc_to_del->list);
755 static void mlx4_en_cache_mclist(struct net_device *dev)
757 struct mlx4_en_priv *priv = netdev_priv(dev);
758 struct netdev_hw_addr *ha;
759 struct mlx4_en_mc_list *tmp;
761 mlx4_en_clear_list(dev);
762 netdev_for_each_mc_addr(ha, dev) {
763 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
765 mlx4_en_clear_list(dev);
768 memcpy(tmp->addr, ha->addr, ETH_ALEN);
769 list_add_tail(&tmp->list, &priv->mc_list);
773 static void update_mclist_flags(struct mlx4_en_priv *priv,
774 struct list_head *dst,
775 struct list_head *src)
777 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
780 /* Find all the entries that should be removed from dst,
781 * These are the entries that are not found in src
783 list_for_each_entry(dst_tmp, dst, list) {
785 list_for_each_entry(src_tmp, src, list) {
786 if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
792 dst_tmp->action = MCLIST_REM;
795 /* Add entries that exist in src but not in dst
796 * mark them as need to add
798 list_for_each_entry(src_tmp, src, list) {
800 list_for_each_entry(dst_tmp, dst, list) {
801 if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
802 dst_tmp->action = MCLIST_NONE;
808 new_mc = kmemdup(src_tmp,
809 sizeof(struct mlx4_en_mc_list),
814 new_mc->action = MCLIST_ADD;
815 list_add_tail(&new_mc->list, dst);
820 static void mlx4_en_set_rx_mode(struct net_device *dev)
822 struct mlx4_en_priv *priv = netdev_priv(dev);
827 queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
830 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
831 struct mlx4_en_dev *mdev)
835 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
836 if (netif_msg_rx_status(priv))
837 en_warn(priv, "Entering promiscuous mode\n");
838 priv->flags |= MLX4_EN_FLAG_PROMISC;
840 /* Enable promiscouos mode */
841 switch (mdev->dev->caps.steering_mode) {
842 case MLX4_STEERING_MODE_DEVICE_MANAGED:
843 err = mlx4_flow_steer_promisc_add(mdev->dev,
846 MLX4_FS_ALL_DEFAULT);
848 en_err(priv, "Failed enabling promiscuous mode\n");
849 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
852 case MLX4_STEERING_MODE_B0:
853 err = mlx4_unicast_promisc_add(mdev->dev,
857 en_err(priv, "Failed enabling unicast promiscuous mode\n");
859 /* Add the default qp number as multicast
862 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
863 err = mlx4_multicast_promisc_add(mdev->dev,
867 en_err(priv, "Failed enabling multicast promiscuous mode\n");
868 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
872 case MLX4_STEERING_MODE_A0:
873 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
878 en_err(priv, "Failed enabling promiscuous mode\n");
882 /* Disable port multicast filter (unconditionally) */
883 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
884 0, MLX4_MCAST_DISABLE);
886 en_err(priv, "Failed disabling multicast filter\n");
888 /* Disable port VLAN filter */
889 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
891 en_err(priv, "Failed disabling VLAN filter\n");
895 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
896 struct mlx4_en_dev *mdev)
900 if (netif_msg_rx_status(priv))
901 en_warn(priv, "Leaving promiscuous mode\n");
902 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
904 /* Disable promiscouos mode */
905 switch (mdev->dev->caps.steering_mode) {
906 case MLX4_STEERING_MODE_DEVICE_MANAGED:
907 err = mlx4_flow_steer_promisc_remove(mdev->dev,
909 MLX4_FS_ALL_DEFAULT);
911 en_err(priv, "Failed disabling promiscuous mode\n");
912 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
915 case MLX4_STEERING_MODE_B0:
916 err = mlx4_unicast_promisc_remove(mdev->dev,
920 en_err(priv, "Failed disabling unicast promiscuous mode\n");
921 /* Disable Multicast promisc */
922 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
923 err = mlx4_multicast_promisc_remove(mdev->dev,
927 en_err(priv, "Failed disabling multicast promiscuous mode\n");
928 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
932 case MLX4_STEERING_MODE_A0:
933 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
937 en_err(priv, "Failed disabling promiscuous mode\n");
941 /* Enable port VLAN filter */
942 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
944 en_err(priv, "Failed enabling VLAN filter\n");
947 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
948 struct net_device *dev,
949 struct mlx4_en_dev *mdev)
951 struct mlx4_en_mc_list *mclist, *tmp;
953 u8 mc_list[16] = {0};
956 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
957 if (dev->flags & IFF_ALLMULTI) {
958 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
959 0, MLX4_MCAST_DISABLE);
961 en_err(priv, "Failed disabling multicast filter\n");
963 /* Add the default qp number as multicast promisc */
964 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
965 switch (mdev->dev->caps.steering_mode) {
966 case MLX4_STEERING_MODE_DEVICE_MANAGED:
967 err = mlx4_flow_steer_promisc_add(mdev->dev,
973 case MLX4_STEERING_MODE_B0:
974 err = mlx4_multicast_promisc_add(mdev->dev,
979 case MLX4_STEERING_MODE_A0:
983 en_err(priv, "Failed entering multicast promisc mode\n");
984 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
987 /* Disable Multicast promisc */
988 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
989 switch (mdev->dev->caps.steering_mode) {
990 case MLX4_STEERING_MODE_DEVICE_MANAGED:
991 err = mlx4_flow_steer_promisc_remove(mdev->dev,
996 case MLX4_STEERING_MODE_B0:
997 err = mlx4_multicast_promisc_remove(mdev->dev,
1002 case MLX4_STEERING_MODE_A0:
1006 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1007 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1010 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1011 0, MLX4_MCAST_DISABLE);
1013 en_err(priv, "Failed disabling multicast filter\n");
1015 /* Flush mcast filter and init it with broadcast address */
1016 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1017 1, MLX4_MCAST_CONFIG);
1019 /* Update multicast list - we cache all addresses so they won't
1020 * change while HW is updated holding the command semaphor */
1021 netif_addr_lock_bh(dev);
1022 mlx4_en_cache_mclist(dev);
1023 netif_addr_unlock_bh(dev);
1024 list_for_each_entry(mclist, &priv->mc_list, list) {
1025 mcast_addr = mlx4_en_mac_to_u64(mclist->addr);
1026 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1027 mcast_addr, 0, MLX4_MCAST_CONFIG);
1029 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1030 0, MLX4_MCAST_ENABLE);
1032 en_err(priv, "Failed enabling multicast filter\n");
1034 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1035 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1036 if (mclist->action == MCLIST_REM) {
1037 /* detach this address and delete from list */
1038 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1039 mc_list[5] = priv->port;
1040 err = mlx4_multicast_detach(mdev->dev,
1041 &priv->rss_map.indir_qp,
1046 en_err(priv, "Fail to detach multicast address\n");
1048 /* remove from list */
1049 list_del(&mclist->list);
1051 } else if (mclist->action == MCLIST_ADD) {
1052 /* attach the address */
1053 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1054 /* needed for B0 steering support */
1055 mc_list[5] = priv->port;
1056 err = mlx4_multicast_attach(mdev->dev,
1057 &priv->rss_map.indir_qp,
1063 en_err(priv, "Fail to attach multicast address\n");
1070 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1071 struct net_device *dev,
1072 struct mlx4_en_dev *mdev)
1074 struct netdev_hw_addr *ha;
1075 struct mlx4_mac_entry *entry;
1076 struct hlist_node *tmp;
1080 struct hlist_head *bucket;
1085 /* Note that we do not need to protect our mac_hash traversal with rcu,
1086 * since all modification code is protected by mdev->state_lock
1089 /* find what to remove */
1090 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1091 bucket = &priv->mac_hash[i];
1092 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1094 netdev_for_each_uc_addr(ha, dev) {
1095 if (ether_addr_equal_64bits(entry->mac,
1102 /* MAC address of the port is not in uc list */
1103 if (ether_addr_equal_64bits(entry->mac, dev->dev_addr))
1107 mac = mlx4_en_mac_to_u64(entry->mac);
1108 mlx4_en_uc_steer_release(priv, entry->mac,
1111 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1113 hlist_del_rcu(&entry->hlist);
1114 kfree_rcu(entry, rcu);
1115 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1116 entry->mac, priv->port);
1122 /* if we didn't remove anything, there is no use in trying to add
1123 * again once we are in a forced promisc mode state
1125 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1128 prev_flags = priv->flags;
1129 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1131 /* find what to add */
1132 netdev_for_each_uc_addr(ha, dev) {
1134 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1135 hlist_for_each_entry(entry, bucket, hlist) {
1136 if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1143 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1145 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1146 ha->addr, priv->port);
1147 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1150 mac = mlx4_en_mac_to_u64(ha->addr);
1151 memcpy(entry->mac, ha->addr, ETH_ALEN);
1152 err = mlx4_register_mac(mdev->dev, priv->port, mac);
1154 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1155 ha->addr, priv->port, err);
1157 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1160 err = mlx4_en_uc_steer_add(priv, ha->addr,
1164 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1165 ha->addr, priv->port, err);
1166 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1168 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1171 unsigned int mac_hash;
1172 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1173 ha->addr, priv->port);
1174 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1175 bucket = &priv->mac_hash[mac_hash];
1176 hlist_add_head_rcu(&entry->hlist, bucket);
1181 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1182 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1184 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1185 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1190 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1192 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1194 struct mlx4_en_dev *mdev = priv->mdev;
1195 struct net_device *dev = priv->dev;
1197 mutex_lock(&mdev->state_lock);
1198 if (!mdev->device_up) {
1199 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1202 if (!priv->port_up) {
1203 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1207 if (!netif_carrier_ok(dev)) {
1208 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1209 if (priv->port_state.link_state) {
1210 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1211 netif_carrier_on(dev);
1212 en_dbg(LINK, priv, "Link Up\n");
1217 if (dev->priv_flags & IFF_UNICAST_FLT)
1218 mlx4_en_do_uc_filter(priv, dev, mdev);
1220 /* Promsicuous mode: disable all filters */
1221 if ((dev->flags & IFF_PROMISC) ||
1222 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1223 mlx4_en_set_promisc_mode(priv, mdev);
1227 /* Not in promiscuous mode */
1228 if (priv->flags & MLX4_EN_FLAG_PROMISC)
1229 mlx4_en_clear_promisc_mode(priv, mdev);
1231 mlx4_en_do_multicast(priv, dev, mdev);
1233 mutex_unlock(&mdev->state_lock);
1236 #ifdef CONFIG_NET_POLL_CONTROLLER
1237 static void mlx4_en_netpoll(struct net_device *dev)
1239 struct mlx4_en_priv *priv = netdev_priv(dev);
1240 struct mlx4_en_cq *cq;
1241 unsigned long flags;
1244 for (i = 0; i < priv->rx_ring_num; i++) {
1245 cq = &priv->rx_cq[i];
1246 spin_lock_irqsave(&cq->lock, flags);
1247 napi_synchronize(&cq->napi);
1248 mlx4_en_process_rx_cq(dev, cq, 0);
1249 spin_unlock_irqrestore(&cq->lock, flags);
1254 static void mlx4_en_tx_timeout(struct net_device *dev)
1256 struct mlx4_en_priv *priv = netdev_priv(dev);
1257 struct mlx4_en_dev *mdev = priv->mdev;
1260 if (netif_msg_timer(priv))
1261 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1263 for (i = 0; i < priv->tx_ring_num; i++) {
1264 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1266 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1267 i, priv->tx_ring[i].qpn, priv->tx_ring[i].cqn,
1268 priv->tx_ring[i].cons, priv->tx_ring[i].prod);
1271 priv->port_stats.tx_timeout++;
1272 en_dbg(DRV, priv, "Scheduling watchdog\n");
1273 queue_work(mdev->workqueue, &priv->watchdog_task);
1277 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1279 struct mlx4_en_priv *priv = netdev_priv(dev);
1281 spin_lock_bh(&priv->stats_lock);
1282 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1283 spin_unlock_bh(&priv->stats_lock);
1285 return &priv->ret_stats;
1288 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1290 struct mlx4_en_cq *cq;
1293 /* If we haven't received a specific coalescing setting
1294 * (module param), we set the moderation parameters as follows:
1295 * - moder_cnt is set to the number of mtu sized packets to
1296 * satisfy our coalescing target.
1297 * - moder_time is set to a fixed value.
1299 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1300 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1301 priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1302 priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1303 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1304 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1306 /* Setup cq moderation params */
1307 for (i = 0; i < priv->rx_ring_num; i++) {
1308 cq = &priv->rx_cq[i];
1309 cq->moder_cnt = priv->rx_frames;
1310 cq->moder_time = priv->rx_usecs;
1311 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1312 priv->last_moder_packets[i] = 0;
1313 priv->last_moder_bytes[i] = 0;
1316 for (i = 0; i < priv->tx_ring_num; i++) {
1317 cq = &priv->tx_cq[i];
1318 cq->moder_cnt = priv->tx_frames;
1319 cq->moder_time = priv->tx_usecs;
1322 /* Reset auto-moderation params */
1323 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1324 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1325 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1326 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1327 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1328 priv->adaptive_rx_coal = 1;
1329 priv->last_moder_jiffies = 0;
1330 priv->last_moder_tx_packets = 0;
1333 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1335 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1336 struct mlx4_en_cq *cq;
1337 unsigned long packets;
1339 unsigned long avg_pkt_size;
1340 unsigned long rx_packets;
1341 unsigned long rx_bytes;
1342 unsigned long rx_pkt_diff;
1346 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1349 for (ring = 0; ring < priv->rx_ring_num; ring++) {
1350 spin_lock_bh(&priv->stats_lock);
1351 rx_packets = priv->rx_ring[ring].packets;
1352 rx_bytes = priv->rx_ring[ring].bytes;
1353 spin_unlock_bh(&priv->stats_lock);
1355 rx_pkt_diff = ((unsigned long) (rx_packets -
1356 priv->last_moder_packets[ring]));
1357 packets = rx_pkt_diff;
1358 rate = packets * HZ / period;
1359 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1360 priv->last_moder_bytes[ring])) / packets : 0;
1362 /* Apply auto-moderation only when packet rate
1363 * exceeds a rate that it matters */
1364 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1365 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1366 if (rate < priv->pkt_rate_low)
1367 moder_time = priv->rx_usecs_low;
1368 else if (rate > priv->pkt_rate_high)
1369 moder_time = priv->rx_usecs_high;
1371 moder_time = (rate - priv->pkt_rate_low) *
1372 (priv->rx_usecs_high - priv->rx_usecs_low) /
1373 (priv->pkt_rate_high - priv->pkt_rate_low) +
1376 moder_time = priv->rx_usecs_low;
1379 if (moder_time != priv->last_moder_time[ring]) {
1380 priv->last_moder_time[ring] = moder_time;
1381 cq = &priv->rx_cq[ring];
1382 cq->moder_time = moder_time;
1383 cq->moder_cnt = priv->rx_frames;
1384 err = mlx4_en_set_cq_moder(priv, cq);
1386 en_err(priv, "Failed modifying moderation for cq:%d\n",
1389 priv->last_moder_packets[ring] = rx_packets;
1390 priv->last_moder_bytes[ring] = rx_bytes;
1393 priv->last_moder_jiffies = jiffies;
1396 static void mlx4_en_do_get_stats(struct work_struct *work)
1398 struct delayed_work *delay = to_delayed_work(work);
1399 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1401 struct mlx4_en_dev *mdev = priv->mdev;
1404 mutex_lock(&mdev->state_lock);
1405 if (mdev->device_up) {
1406 if (priv->port_up) {
1407 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1409 en_dbg(HW, priv, "Could not update stats\n");
1411 mlx4_en_auto_moderation(priv);
1414 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1416 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1417 mlx4_en_do_set_mac(priv);
1418 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1420 mutex_unlock(&mdev->state_lock);
1423 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1426 static void mlx4_en_service_task(struct work_struct *work)
1428 struct delayed_work *delay = to_delayed_work(work);
1429 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1431 struct mlx4_en_dev *mdev = priv->mdev;
1433 mutex_lock(&mdev->state_lock);
1434 if (mdev->device_up) {
1435 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1436 mlx4_en_ptp_overflow_check(mdev);
1438 queue_delayed_work(mdev->workqueue, &priv->service_task,
1439 SERVICE_TASK_DELAY);
1441 mutex_unlock(&mdev->state_lock);
1444 static void mlx4_en_linkstate(struct work_struct *work)
1446 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1448 struct mlx4_en_dev *mdev = priv->mdev;
1449 int linkstate = priv->link_state;
1451 mutex_lock(&mdev->state_lock);
1452 /* If observable port state changed set carrier state and
1453 * report to system log */
1454 if (priv->last_link_state != linkstate) {
1455 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1456 en_info(priv, "Link Down\n");
1457 netif_carrier_off(priv->dev);
1459 en_info(priv, "Link Up\n");
1460 netif_carrier_on(priv->dev);
1463 priv->last_link_state = linkstate;
1464 mutex_unlock(&mdev->state_lock);
1468 int mlx4_en_start_port(struct net_device *dev)
1470 struct mlx4_en_priv *priv = netdev_priv(dev);
1471 struct mlx4_en_dev *mdev = priv->mdev;
1472 struct mlx4_en_cq *cq;
1473 struct mlx4_en_tx_ring *tx_ring;
1479 u8 mc_list[16] = {0};
1481 if (priv->port_up) {
1482 en_dbg(DRV, priv, "start port called while port already up\n");
1486 INIT_LIST_HEAD(&priv->mc_list);
1487 INIT_LIST_HEAD(&priv->curr_list);
1488 INIT_LIST_HEAD(&priv->ethtool_list);
1489 memset(&priv->ethtool_rules[0], 0,
1490 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1492 /* Calculate Rx buf size */
1493 dev->mtu = min(dev->mtu, priv->max_mtu);
1494 mlx4_en_calc_rx_buf(dev);
1495 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1497 /* Configure rx cq's and rings */
1498 err = mlx4_en_activate_rx_rings(priv);
1500 en_err(priv, "Failed to activate RX rings\n");
1503 for (i = 0; i < priv->rx_ring_num; i++) {
1504 cq = &priv->rx_cq[i];
1506 mlx4_en_cq_init_lock(cq);
1508 err = mlx4_en_activate_cq(priv, cq, i);
1510 en_err(priv, "Failed activating Rx CQ\n");
1513 for (j = 0; j < cq->size; j++)
1514 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1515 err = mlx4_en_set_cq_moder(priv, cq);
1517 en_err(priv, "Failed setting cq moderation parameters");
1518 mlx4_en_deactivate_cq(priv, cq);
1521 mlx4_en_arm_cq(priv, cq);
1522 priv->rx_ring[i].cqn = cq->mcq.cqn;
1527 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1528 err = mlx4_en_get_qp(priv);
1530 en_err(priv, "Failed getting eth qp\n");
1533 mdev->mac_removed[priv->port] = 0;
1535 err = mlx4_en_config_rss_steer(priv);
1537 en_err(priv, "Failed configuring rss steering\n");
1541 err = mlx4_en_create_drop_qp(priv);
1545 /* Configure tx cq's and rings */
1546 for (i = 0; i < priv->tx_ring_num; i++) {
1548 cq = &priv->tx_cq[i];
1549 err = mlx4_en_activate_cq(priv, cq, i);
1551 en_err(priv, "Failed allocating Tx CQ\n");
1554 err = mlx4_en_set_cq_moder(priv, cq);
1556 en_err(priv, "Failed setting cq moderation parameters");
1557 mlx4_en_deactivate_cq(priv, cq);
1560 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1561 cq->buf->wqe_index = cpu_to_be16(0xffff);
1563 /* Configure ring */
1564 tx_ring = &priv->tx_ring[i];
1565 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1566 i / priv->num_tx_rings_p_up);
1568 en_err(priv, "Failed allocating Tx ring\n");
1569 mlx4_en_deactivate_cq(priv, cq);
1572 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1574 /* Arm CQ for TX completions */
1575 mlx4_en_arm_cq(priv, cq);
1577 /* Set initial ownership of all Tx TXBBs to SW (1) */
1578 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1579 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1583 /* Configure port */
1584 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1585 priv->rx_skb_size + ETH_FCS_LEN,
1586 priv->prof->tx_pause,
1588 priv->prof->rx_pause,
1589 priv->prof->rx_ppp);
1591 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1595 /* Set default qp number */
1596 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1598 en_err(priv, "Failed setting default qp numbers\n");
1603 en_dbg(HW, priv, "Initializing port\n");
1604 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1606 en_err(priv, "Failed Initializing port\n");
1610 /* Attach rx QP to bradcast address */
1611 memset(&mc_list[10], 0xff, ETH_ALEN);
1612 mc_list[5] = priv->port; /* needed for B0 steering support */
1613 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1614 priv->port, 0, MLX4_PROT_ETH,
1615 &priv->broadcast_id))
1616 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1618 /* Must redo promiscuous mode setup. */
1619 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1621 /* Schedule multicast task to populate multicast list */
1622 queue_work(mdev->workqueue, &priv->rx_mode_task);
1624 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1626 priv->port_up = true;
1627 netif_tx_start_all_queues(dev);
1628 netif_device_attach(dev);
1633 while (tx_index--) {
1634 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
1635 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
1637 mlx4_en_destroy_drop_qp(priv);
1639 mlx4_en_release_rss_steer(priv);
1641 mlx4_en_put_qp(priv);
1644 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
1645 for (i = 0; i < priv->rx_ring_num; i++)
1646 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1648 return err; /* need to close devices */
1652 void mlx4_en_stop_port(struct net_device *dev, int detach)
1654 struct mlx4_en_priv *priv = netdev_priv(dev);
1655 struct mlx4_en_dev *mdev = priv->mdev;
1656 struct mlx4_en_mc_list *mclist, *tmp;
1657 struct ethtool_flow_id *flow, *tmp_flow;
1659 u8 mc_list[16] = {0};
1661 if (!priv->port_up) {
1662 en_dbg(DRV, priv, "stop port called while port already down\n");
1667 mlx4_CLOSE_PORT(mdev->dev, priv->port);
1669 /* Synchronize with tx routine */
1670 netif_tx_lock_bh(dev);
1672 netif_device_detach(dev);
1673 netif_tx_stop_all_queues(dev);
1674 netif_tx_unlock_bh(dev);
1676 netif_tx_disable(dev);
1678 /* Set port as not active */
1679 priv->port_up = false;
1681 /* Promsicuous mode */
1682 if (mdev->dev->caps.steering_mode ==
1683 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1684 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1685 MLX4_EN_FLAG_MC_PROMISC);
1686 mlx4_flow_steer_promisc_remove(mdev->dev,
1688 MLX4_FS_ALL_DEFAULT);
1689 mlx4_flow_steer_promisc_remove(mdev->dev,
1691 MLX4_FS_MC_DEFAULT);
1692 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1693 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1695 /* Disable promiscouos mode */
1696 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1699 /* Disable Multicast promisc */
1700 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1701 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1703 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1707 /* Detach All multicasts */
1708 memset(&mc_list[10], 0xff, ETH_ALEN);
1709 mc_list[5] = priv->port; /* needed for B0 steering support */
1710 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1711 MLX4_PROT_ETH, priv->broadcast_id);
1712 list_for_each_entry(mclist, &priv->curr_list, list) {
1713 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1714 mc_list[5] = priv->port;
1715 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1716 mc_list, MLX4_PROT_ETH, mclist->reg_id);
1718 mlx4_en_clear_list(dev);
1719 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1720 list_del(&mclist->list);
1724 /* Flush multicast filter */
1725 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1727 /* Remove flow steering rules for the port*/
1728 if (mdev->dev->caps.steering_mode ==
1729 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1731 list_for_each_entry_safe(flow, tmp_flow,
1732 &priv->ethtool_list, list) {
1733 mlx4_flow_detach(mdev->dev, flow->id);
1734 list_del(&flow->list);
1738 mlx4_en_destroy_drop_qp(priv);
1741 for (i = 0; i < priv->tx_ring_num; i++) {
1742 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
1743 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
1747 for (i = 0; i < priv->tx_ring_num; i++)
1748 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
1751 mlx4_en_release_rss_steer(priv);
1753 /* Unregister Mac address for the port */
1754 mlx4_en_put_qp(priv);
1755 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1756 mdev->mac_removed[priv->port] = 1;
1759 for (i = 0; i < priv->rx_ring_num; i++) {
1760 struct mlx4_en_cq *cq = &priv->rx_cq[i];
1763 while (!mlx4_en_cq_lock_napi(cq)) {
1764 pr_info("CQ %d locked\n", i);
1769 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state))
1771 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1772 mlx4_en_deactivate_cq(priv, cq);
1776 static void mlx4_en_restart(struct work_struct *work)
1778 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1780 struct mlx4_en_dev *mdev = priv->mdev;
1781 struct net_device *dev = priv->dev;
1783 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1785 mutex_lock(&mdev->state_lock);
1786 if (priv->port_up) {
1787 mlx4_en_stop_port(dev, 1);
1788 if (mlx4_en_start_port(dev))
1789 en_err(priv, "Failed restarting port %d\n", priv->port);
1791 mutex_unlock(&mdev->state_lock);
1794 static void mlx4_en_clear_stats(struct net_device *dev)
1796 struct mlx4_en_priv *priv = netdev_priv(dev);
1797 struct mlx4_en_dev *mdev = priv->mdev;
1800 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1801 en_dbg(HW, priv, "Failed dumping statistics\n");
1803 memset(&priv->stats, 0, sizeof(priv->stats));
1804 memset(&priv->pstats, 0, sizeof(priv->pstats));
1805 memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1806 memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1808 for (i = 0; i < priv->tx_ring_num; i++) {
1809 priv->tx_ring[i].bytes = 0;
1810 priv->tx_ring[i].packets = 0;
1811 priv->tx_ring[i].tx_csum = 0;
1813 for (i = 0; i < priv->rx_ring_num; i++) {
1814 priv->rx_ring[i].bytes = 0;
1815 priv->rx_ring[i].packets = 0;
1816 priv->rx_ring[i].csum_ok = 0;
1817 priv->rx_ring[i].csum_none = 0;
1821 static int mlx4_en_open(struct net_device *dev)
1823 struct mlx4_en_priv *priv = netdev_priv(dev);
1824 struct mlx4_en_dev *mdev = priv->mdev;
1827 mutex_lock(&mdev->state_lock);
1829 if (!mdev->device_up) {
1830 en_err(priv, "Cannot open - device down/disabled\n");
1835 /* Reset HW statistics and SW counters */
1836 mlx4_en_clear_stats(dev);
1838 err = mlx4_en_start_port(dev);
1840 en_err(priv, "Failed starting port:%d\n", priv->port);
1843 mutex_unlock(&mdev->state_lock);
1848 static int mlx4_en_close(struct net_device *dev)
1850 struct mlx4_en_priv *priv = netdev_priv(dev);
1851 struct mlx4_en_dev *mdev = priv->mdev;
1853 en_dbg(IFDOWN, priv, "Close port called\n");
1855 mutex_lock(&mdev->state_lock);
1857 mlx4_en_stop_port(dev, 0);
1858 netif_carrier_off(dev);
1860 mutex_unlock(&mdev->state_lock);
1864 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1868 #ifdef CONFIG_RFS_ACCEL
1869 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1870 priv->dev->rx_cpu_rmap = NULL;
1873 for (i = 0; i < priv->tx_ring_num; i++) {
1874 if (priv->tx_ring[i].tx_info)
1875 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1876 if (priv->tx_cq[i].buf)
1877 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1880 for (i = 0; i < priv->rx_ring_num; i++) {
1881 if (priv->rx_ring[i].rx_info)
1882 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1883 priv->prof->rx_ring_size, priv->stride);
1884 if (priv->rx_cq[i].buf)
1885 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1888 if (priv->base_tx_qpn) {
1889 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1890 priv->base_tx_qpn = 0;
1894 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1896 struct mlx4_en_port_profile *prof = priv->prof;
1900 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1902 en_err(priv, "failed reserving range for TX rings\n");
1906 /* Create tx Rings */
1907 for (i = 0; i < priv->tx_ring_num; i++) {
1908 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1909 prof->tx_ring_size, i, TX))
1912 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], priv->base_tx_qpn + i,
1913 prof->tx_ring_size, TXBB_SIZE))
1917 /* Create rx Rings */
1918 for (i = 0; i < priv->rx_ring_num; i++) {
1919 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1920 prof->rx_ring_size, i, RX))
1923 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1924 prof->rx_ring_size, priv->stride))
1928 #ifdef CONFIG_RFS_ACCEL
1929 if (priv->mdev->dev->caps.comp_pool) {
1930 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
1931 if (!priv->dev->rx_cpu_rmap)
1939 en_err(priv, "Failed to allocate NIC resources\n");
1944 void mlx4_en_destroy_netdev(struct net_device *dev)
1946 struct mlx4_en_priv *priv = netdev_priv(dev);
1947 struct mlx4_en_dev *mdev = priv->mdev;
1949 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1951 /* Unregister device - this will close the port if it was up */
1952 if (priv->registered)
1953 unregister_netdev(dev);
1955 if (priv->allocated)
1956 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1958 cancel_delayed_work(&priv->stats_task);
1959 cancel_delayed_work(&priv->service_task);
1960 /* flush any pending task for this netdev */
1961 flush_workqueue(mdev->workqueue);
1963 /* Detach the netdev so tasks would not attempt to access it */
1964 mutex_lock(&mdev->state_lock);
1965 mdev->pndev[priv->port] = NULL;
1966 mutex_unlock(&mdev->state_lock);
1968 mlx4_en_free_resources(priv);
1970 kfree(priv->tx_ring);
1976 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1978 struct mlx4_en_priv *priv = netdev_priv(dev);
1979 struct mlx4_en_dev *mdev = priv->mdev;
1982 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
1985 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1986 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
1991 if (netif_running(dev)) {
1992 mutex_lock(&mdev->state_lock);
1993 if (!mdev->device_up) {
1994 /* NIC is probably restarting - let watchdog task reset
1996 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1998 mlx4_en_stop_port(dev, 1);
1999 err = mlx4_en_start_port(dev);
2001 en_err(priv, "Failed restarting port:%d\n",
2003 queue_work(mdev->workqueue, &priv->watchdog_task);
2006 mutex_unlock(&mdev->state_lock);
2011 static int mlx4_en_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr)
2013 struct mlx4_en_priv *priv = netdev_priv(dev);
2014 struct mlx4_en_dev *mdev = priv->mdev;
2015 struct hwtstamp_config config;
2017 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2020 /* reserved for future extensions */
2024 /* device doesn't support time stamping */
2025 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2028 /* TX HW timestamp */
2029 switch (config.tx_type) {
2030 case HWTSTAMP_TX_OFF:
2031 case HWTSTAMP_TX_ON:
2037 /* RX HW timestamp */
2038 switch (config.rx_filter) {
2039 case HWTSTAMP_FILTER_NONE:
2041 case HWTSTAMP_FILTER_ALL:
2042 case HWTSTAMP_FILTER_SOME:
2043 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2044 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2045 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2046 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2047 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2048 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2049 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2050 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2051 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2052 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2053 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2054 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2055 config.rx_filter = HWTSTAMP_FILTER_ALL;
2061 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
2062 config.tx_type = HWTSTAMP_TX_OFF;
2063 config.rx_filter = HWTSTAMP_FILTER_NONE;
2066 return copy_to_user(ifr->ifr_data, &config,
2067 sizeof(config)) ? -EFAULT : 0;
2070 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2074 return mlx4_en_hwtstamp_ioctl(dev, ifr);
2080 static int mlx4_en_set_features(struct net_device *netdev,
2081 netdev_features_t features)
2083 struct mlx4_en_priv *priv = netdev_priv(netdev);
2085 if (features & NETIF_F_LOOPBACK)
2086 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2089 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2091 mlx4_en_update_loopback_state(netdev, features);
2097 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2099 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2100 struct mlx4_en_dev *mdev = en_priv->mdev;
2101 u64 mac_u64 = mlx4_en_mac_to_u64(mac);
2103 if (!is_valid_ether_addr(mac))
2106 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2109 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2111 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2112 struct mlx4_en_dev *mdev = en_priv->mdev;
2114 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2117 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2119 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2120 struct mlx4_en_dev *mdev = en_priv->mdev;
2122 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2125 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2127 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2128 struct mlx4_en_dev *mdev = en_priv->mdev;
2130 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2133 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2135 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2136 struct mlx4_en_dev *mdev = en_priv->mdev;
2138 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2140 static const struct net_device_ops mlx4_netdev_ops = {
2141 .ndo_open = mlx4_en_open,
2142 .ndo_stop = mlx4_en_close,
2143 .ndo_start_xmit = mlx4_en_xmit,
2144 .ndo_select_queue = mlx4_en_select_queue,
2145 .ndo_get_stats = mlx4_en_get_stats,
2146 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2147 .ndo_set_mac_address = mlx4_en_set_mac,
2148 .ndo_validate_addr = eth_validate_addr,
2149 .ndo_change_mtu = mlx4_en_change_mtu,
2150 .ndo_do_ioctl = mlx4_en_ioctl,
2151 .ndo_tx_timeout = mlx4_en_tx_timeout,
2152 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2153 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2154 #ifdef CONFIG_NET_POLL_CONTROLLER
2155 .ndo_poll_controller = mlx4_en_netpoll,
2157 .ndo_set_features = mlx4_en_set_features,
2158 .ndo_setup_tc = mlx4_en_setup_tc,
2159 #ifdef CONFIG_RFS_ACCEL
2160 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2162 #ifdef CONFIG_NET_RX_BUSY_POLL
2163 .ndo_busy_poll = mlx4_en_low_latency_recv,
2167 static const struct net_device_ops mlx4_netdev_ops_master = {
2168 .ndo_open = mlx4_en_open,
2169 .ndo_stop = mlx4_en_close,
2170 .ndo_start_xmit = mlx4_en_xmit,
2171 .ndo_select_queue = mlx4_en_select_queue,
2172 .ndo_get_stats = mlx4_en_get_stats,
2173 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2174 .ndo_set_mac_address = mlx4_en_set_mac,
2175 .ndo_validate_addr = eth_validate_addr,
2176 .ndo_change_mtu = mlx4_en_change_mtu,
2177 .ndo_tx_timeout = mlx4_en_tx_timeout,
2178 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2179 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2180 .ndo_set_vf_mac = mlx4_en_set_vf_mac,
2181 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2182 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2183 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2184 .ndo_get_vf_config = mlx4_en_get_vf_config,
2185 #ifdef CONFIG_NET_POLL_CONTROLLER
2186 .ndo_poll_controller = mlx4_en_netpoll,
2188 .ndo_set_features = mlx4_en_set_features,
2189 .ndo_setup_tc = mlx4_en_setup_tc,
2190 #ifdef CONFIG_RFS_ACCEL
2191 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2195 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2196 struct mlx4_en_port_profile *prof)
2198 struct net_device *dev;
2199 struct mlx4_en_priv *priv;
2204 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2205 MAX_TX_RINGS, MAX_RX_RINGS);
2209 netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2210 netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2212 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2213 dev->dev_id = port - 1;
2216 * Initialize driver private data
2219 priv = netdev_priv(dev);
2220 memset(priv, 0, sizeof(struct mlx4_en_priv));
2223 priv->ddev = &mdev->pdev->dev;
2226 priv->port_up = false;
2227 priv->flags = prof->flags;
2228 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2229 MLX4_WQE_CTRL_SOLICITED);
2230 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2231 priv->tx_ring_num = prof->tx_ring_num;
2233 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring) * MAX_TX_RINGS,
2235 if (!priv->tx_ring) {
2239 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq) * MAX_TX_RINGS,
2245 priv->rx_ring_num = prof->rx_ring_num;
2246 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2247 priv->mac_index = -1;
2248 priv->msg_enable = MLX4_EN_MSG_LEVEL;
2249 spin_lock_init(&priv->stats_lock);
2250 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2251 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2252 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2253 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2254 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2255 #ifdef CONFIG_MLX4_EN_DCB
2256 if (!mlx4_is_slave(priv->mdev->dev)) {
2257 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2258 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2260 en_info(priv, "enabling only PFC DCB ops\n");
2261 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2266 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2267 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2269 /* Query for default mac and max mtu */
2270 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2272 /* Set default MAC */
2273 dev->addr_len = ETH_ALEN;
2274 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2275 if (!is_valid_ether_addr(dev->dev_addr)) {
2276 if (mlx4_is_slave(priv->mdev->dev)) {
2277 eth_hw_addr_random(dev);
2278 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2279 mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr);
2280 mdev->dev->caps.def_mac[priv->port] = mac_u64;
2282 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2283 priv->port, dev->dev_addr);
2289 memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
2291 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2292 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2293 err = mlx4_en_alloc_resources(priv);
2297 #ifdef CONFIG_RFS_ACCEL
2298 INIT_LIST_HEAD(&priv->filters);
2299 spin_lock_init(&priv->filters_lock);
2302 /* Initialize time stamping config */
2303 priv->hwtstamp_config.flags = 0;
2304 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2305 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2307 /* Allocate page for receive rings */
2308 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2309 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2311 en_err(priv, "Failed to allocate page for rx qps\n");
2314 priv->allocated = 1;
2317 * Initialize netdev entry points
2319 if (mlx4_is_master(priv->mdev->dev))
2320 dev->netdev_ops = &mlx4_netdev_ops_master;
2322 dev->netdev_ops = &mlx4_netdev_ops;
2323 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2324 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2325 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2327 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
2330 * Set driver features
2332 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2333 if (mdev->LSO_support)
2334 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2336 dev->vlan_features = dev->hw_features;
2338 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2339 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2340 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2341 NETIF_F_HW_VLAN_CTAG_FILTER;
2342 dev->hw_features |= NETIF_F_LOOPBACK;
2344 if (mdev->dev->caps.steering_mode ==
2345 MLX4_STEERING_MODE_DEVICE_MANAGED)
2346 dev->hw_features |= NETIF_F_NTUPLE;
2348 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2349 dev->priv_flags |= IFF_UNICAST_FLT;
2351 mdev->pndev[port] = dev;
2353 netif_carrier_off(dev);
2354 mlx4_en_set_default_moderation(priv);
2356 err = register_netdev(dev);
2358 en_err(priv, "Netdev registration failed for port %d\n", port);
2361 priv->registered = 1;
2363 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2364 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2366 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2368 /* Configure port */
2369 mlx4_en_calc_rx_buf(dev);
2370 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2371 priv->rx_skb_size + ETH_FCS_LEN,
2372 prof->tx_pause, prof->tx_ppp,
2373 prof->rx_pause, prof->rx_ppp);
2375 en_err(priv, "Failed setting port general configurations "
2376 "for port %d, with error %d\n", priv->port, err);
2381 en_warn(priv, "Initializing port\n");
2382 err = mlx4_INIT_PORT(mdev->dev, priv->port);
2384 en_err(priv, "Failed Initializing port\n");
2387 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2389 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2390 queue_delayed_work(mdev->workqueue, &priv->service_task,
2391 SERVICE_TASK_DELAY);
2396 mlx4_en_destroy_netdev(dev);