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>
42 #include <net/vxlan.h>
44 #include <linux/mlx4/driver.h>
45 #include <linux/mlx4/device.h>
46 #include <linux/mlx4/cmd.h>
47 #include <linux/mlx4/cq.h>
52 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
54 struct mlx4_en_priv *priv = netdev_priv(dev);
56 unsigned int offset = 0;
58 if (up && up != MLX4_EN_NUM_UP)
61 netdev_set_num_tc(dev, up);
63 /* Partition Tx queues evenly amongst UP's */
64 for (i = 0; i < up; i++) {
65 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
66 offset += priv->num_tx_rings_p_up;
72 #ifdef CONFIG_NET_RX_BUSY_POLL
73 /* must be called with local_bh_disable()d */
74 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
76 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
77 struct net_device *dev = cq->dev;
78 struct mlx4_en_priv *priv = netdev_priv(dev);
79 struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
83 return LL_FLUSH_FAILED;
85 if (!mlx4_en_cq_lock_poll(cq))
88 done = mlx4_en_process_rx_cq(dev, cq, 4);
90 rx_ring->cleaned += done;
94 mlx4_en_cq_unlock_poll(cq);
98 #endif /* CONFIG_NET_RX_BUSY_POLL */
100 #ifdef CONFIG_RFS_ACCEL
102 struct mlx4_en_filter {
103 struct list_head next;
104 struct work_struct work;
113 struct mlx4_en_priv *priv;
114 u32 flow_id; /* RFS infrastructure id */
115 int id; /* mlx4_en driver id */
116 u64 reg_id; /* Flow steering API id */
117 u8 activated; /* Used to prevent expiry before filter
120 struct hlist_node filter_chain;
123 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
125 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
129 return MLX4_NET_TRANS_RULE_ID_UDP;
131 return MLX4_NET_TRANS_RULE_ID_TCP;
133 return MLX4_NET_TRANS_RULE_NUM;
137 static void mlx4_en_filter_work(struct work_struct *work)
139 struct mlx4_en_filter *filter = container_of(work,
140 struct mlx4_en_filter,
142 struct mlx4_en_priv *priv = filter->priv;
143 struct mlx4_spec_list spec_tcp_udp = {
144 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
147 .dst_port = filter->dst_port,
148 .dst_port_msk = (__force __be16)-1,
149 .src_port = filter->src_port,
150 .src_port_msk = (__force __be16)-1,
154 struct mlx4_spec_list spec_ip = {
155 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
158 .dst_ip = filter->dst_ip,
159 .dst_ip_msk = (__force __be32)-1,
160 .src_ip = filter->src_ip,
161 .src_ip_msk = (__force __be32)-1,
165 struct mlx4_spec_list spec_eth = {
166 .id = MLX4_NET_TRANS_RULE_ID_ETH,
168 struct mlx4_net_trans_rule rule = {
169 .list = LIST_HEAD_INIT(rule.list),
170 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
173 .promisc_mode = MLX4_FS_REGULAR,
175 .priority = MLX4_DOMAIN_RFS,
178 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
180 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
181 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
185 list_add_tail(&spec_eth.list, &rule.list);
186 list_add_tail(&spec_ip.list, &rule.list);
187 list_add_tail(&spec_tcp_udp.list, &rule.list);
189 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
190 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
191 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
193 filter->activated = 0;
195 if (filter->reg_id) {
196 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
197 if (rc && rc != -ENOENT)
198 en_err(priv, "Error detaching flow. rc = %d\n", rc);
201 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
203 en_err(priv, "Error attaching flow. err = %d\n", rc);
206 mlx4_en_filter_rfs_expire(priv);
208 filter->activated = 1;
211 static inline struct hlist_head *
212 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
213 __be16 src_port, __be16 dst_port)
218 l = (__force unsigned long)src_port |
219 ((__force unsigned long)dst_port << 2);
220 l ^= (__force unsigned long)(src_ip ^ dst_ip);
222 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
224 return &priv->filter_hash[bucket_idx];
227 static struct mlx4_en_filter *
228 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
229 __be32 dst_ip, u8 ip_proto, __be16 src_port,
230 __be16 dst_port, u32 flow_id)
232 struct mlx4_en_filter *filter = NULL;
234 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
239 filter->rxq_index = rxq_index;
240 INIT_WORK(&filter->work, mlx4_en_filter_work);
242 filter->src_ip = src_ip;
243 filter->dst_ip = dst_ip;
244 filter->ip_proto = ip_proto;
245 filter->src_port = src_port;
246 filter->dst_port = dst_port;
248 filter->flow_id = flow_id;
250 filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
252 list_add_tail(&filter->next, &priv->filters);
253 hlist_add_head(&filter->filter_chain,
254 filter_hash_bucket(priv, src_ip, dst_ip, src_port,
260 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
262 struct mlx4_en_priv *priv = filter->priv;
265 list_del(&filter->next);
267 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
268 if (rc && rc != -ENOENT)
269 en_err(priv, "Error detaching flow. rc = %d\n", rc);
274 static inline struct mlx4_en_filter *
275 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
276 u8 ip_proto, __be16 src_port, __be16 dst_port)
278 struct mlx4_en_filter *filter;
279 struct mlx4_en_filter *ret = NULL;
281 hlist_for_each_entry(filter,
282 filter_hash_bucket(priv, src_ip, dst_ip,
285 if (filter->src_ip == src_ip &&
286 filter->dst_ip == dst_ip &&
287 filter->ip_proto == ip_proto &&
288 filter->src_port == src_port &&
289 filter->dst_port == dst_port) {
299 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
300 u16 rxq_index, u32 flow_id)
302 struct mlx4_en_priv *priv = netdev_priv(net_dev);
303 struct mlx4_en_filter *filter;
304 const struct iphdr *ip;
311 int nhoff = skb_network_offset(skb);
314 if (skb->protocol != htons(ETH_P_IP))
315 return -EPROTONOSUPPORT;
317 ip = (const struct iphdr *)(skb->data + nhoff);
318 if (ip_is_fragment(ip))
319 return -EPROTONOSUPPORT;
321 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
322 return -EPROTONOSUPPORT;
323 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
325 ip_proto = ip->protocol;
331 spin_lock_bh(&priv->filters_lock);
332 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
335 if (filter->rxq_index == rxq_index)
338 filter->rxq_index = rxq_index;
340 filter = mlx4_en_filter_alloc(priv, rxq_index,
341 src_ip, dst_ip, ip_proto,
342 src_port, dst_port, flow_id);
349 queue_work(priv->mdev->workqueue, &filter->work);
354 spin_unlock_bh(&priv->filters_lock);
359 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
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);
473 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
474 int qpn, u64 *reg_id)
478 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
479 return 0; /* do nothing */
481 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
482 MLX4_DOMAIN_NIC, reg_id);
484 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
487 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
492 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
493 unsigned char *mac, int *qpn, u64 *reg_id)
495 struct mlx4_en_dev *mdev = priv->mdev;
496 struct mlx4_dev *dev = mdev->dev;
499 switch (dev->caps.steering_mode) {
500 case MLX4_STEERING_MODE_B0: {
505 memcpy(&gid[10], mac, ETH_ALEN);
508 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
511 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
512 struct mlx4_spec_list spec_eth = { {NULL} };
513 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
515 struct mlx4_net_trans_rule rule = {
516 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
519 .promisc_mode = MLX4_FS_REGULAR,
520 .priority = MLX4_DOMAIN_NIC,
523 rule.port = priv->port;
525 INIT_LIST_HEAD(&rule.list);
527 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
528 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
529 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
530 list_add_tail(&spec_eth.list, &rule.list);
532 err = mlx4_flow_attach(dev, &rule, reg_id);
539 en_warn(priv, "Failed Attaching Unicast\n");
544 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
545 unsigned char *mac, int qpn, u64 reg_id)
547 struct mlx4_en_dev *mdev = priv->mdev;
548 struct mlx4_dev *dev = mdev->dev;
550 switch (dev->caps.steering_mode) {
551 case MLX4_STEERING_MODE_B0: {
556 memcpy(&gid[10], mac, ETH_ALEN);
559 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
562 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
563 mlx4_flow_detach(dev, reg_id);
567 en_err(priv, "Invalid steering mode.\n");
571 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
573 struct mlx4_en_dev *mdev = priv->mdev;
574 struct mlx4_dev *dev = mdev->dev;
575 struct mlx4_mac_entry *entry;
579 int *qpn = &priv->base_qpn;
580 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
582 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
583 priv->dev->dev_addr);
584 index = mlx4_register_mac(dev, priv->port, mac);
587 en_err(priv, "Failed adding MAC: %pM\n",
588 priv->dev->dev_addr);
592 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
593 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
594 *qpn = base_qpn + index;
598 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
599 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
601 en_err(priv, "Failed to reserve qp for mac registration\n");
605 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id);
609 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
610 &priv->tunnel_reg_id);
614 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
619 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
620 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
621 entry->reg_id = reg_id;
623 hlist_add_head_rcu(&entry->hlist,
624 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
629 if (priv->tunnel_reg_id)
630 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
632 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
635 mlx4_qp_release_range(dev, *qpn, 1);
638 mlx4_unregister_mac(dev, priv->port, mac);
642 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
644 struct mlx4_en_dev *mdev = priv->mdev;
645 struct mlx4_dev *dev = mdev->dev;
646 int qpn = priv->base_qpn;
649 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
650 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
651 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
652 priv->dev->dev_addr);
653 mlx4_unregister_mac(dev, priv->port, mac);
655 struct mlx4_mac_entry *entry;
656 struct hlist_node *tmp;
657 struct hlist_head *bucket;
660 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
661 bucket = &priv->mac_hash[i];
662 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
663 mac = mlx4_mac_to_u64(entry->mac);
664 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
666 mlx4_en_uc_steer_release(priv, entry->mac,
669 mlx4_unregister_mac(dev, priv->port, mac);
670 hlist_del_rcu(&entry->hlist);
671 kfree_rcu(entry, rcu);
675 if (priv->tunnel_reg_id) {
676 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
677 priv->tunnel_reg_id = 0;
680 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
682 mlx4_qp_release_range(dev, qpn, 1);
683 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
687 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
688 unsigned char *new_mac, unsigned char *prev_mac)
690 struct mlx4_en_dev *mdev = priv->mdev;
691 struct mlx4_dev *dev = mdev->dev;
693 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
695 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
696 struct hlist_head *bucket;
697 unsigned int mac_hash;
698 struct mlx4_mac_entry *entry;
699 struct hlist_node *tmp;
700 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
702 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
703 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
704 if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
705 mlx4_en_uc_steer_release(priv, entry->mac,
707 mlx4_unregister_mac(dev, priv->port,
709 hlist_del_rcu(&entry->hlist);
711 memcpy(entry->mac, new_mac, ETH_ALEN);
713 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
714 hlist_add_head_rcu(&entry->hlist,
715 &priv->mac_hash[mac_hash]);
716 mlx4_register_mac(dev, priv->port, new_mac_u64);
717 err = mlx4_en_uc_steer_add(priv, new_mac,
722 if (priv->tunnel_reg_id) {
723 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
724 priv->tunnel_reg_id = 0;
726 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
727 &priv->tunnel_reg_id);
734 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
737 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
738 unsigned char new_mac[ETH_ALEN + 2])
743 /* Remove old MAC and insert the new one */
744 err = mlx4_en_replace_mac(priv, priv->base_qpn,
745 new_mac, priv->current_mac);
747 en_err(priv, "Failed changing HW MAC address\n");
749 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
752 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
757 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
759 struct mlx4_en_priv *priv = netdev_priv(dev);
760 struct mlx4_en_dev *mdev = priv->mdev;
761 struct sockaddr *saddr = addr;
762 unsigned char new_mac[ETH_ALEN + 2];
765 if (!is_valid_ether_addr(saddr->sa_data))
766 return -EADDRNOTAVAIL;
768 mutex_lock(&mdev->state_lock);
769 memcpy(new_mac, saddr->sa_data, ETH_ALEN);
770 err = mlx4_en_do_set_mac(priv, new_mac);
772 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
773 mutex_unlock(&mdev->state_lock);
778 static void mlx4_en_clear_list(struct net_device *dev)
780 struct mlx4_en_priv *priv = netdev_priv(dev);
781 struct mlx4_en_mc_list *tmp, *mc_to_del;
783 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
784 list_del(&mc_to_del->list);
789 static void mlx4_en_cache_mclist(struct net_device *dev)
791 struct mlx4_en_priv *priv = netdev_priv(dev);
792 struct netdev_hw_addr *ha;
793 struct mlx4_en_mc_list *tmp;
795 mlx4_en_clear_list(dev);
796 netdev_for_each_mc_addr(ha, dev) {
797 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
799 mlx4_en_clear_list(dev);
802 memcpy(tmp->addr, ha->addr, ETH_ALEN);
803 list_add_tail(&tmp->list, &priv->mc_list);
807 static void update_mclist_flags(struct mlx4_en_priv *priv,
808 struct list_head *dst,
809 struct list_head *src)
811 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
814 /* Find all the entries that should be removed from dst,
815 * These are the entries that are not found in src
817 list_for_each_entry(dst_tmp, dst, list) {
819 list_for_each_entry(src_tmp, src, list) {
820 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
826 dst_tmp->action = MCLIST_REM;
829 /* Add entries that exist in src but not in dst
830 * mark them as need to add
832 list_for_each_entry(src_tmp, src, list) {
834 list_for_each_entry(dst_tmp, dst, list) {
835 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
836 dst_tmp->action = MCLIST_NONE;
842 new_mc = kmemdup(src_tmp,
843 sizeof(struct mlx4_en_mc_list),
848 new_mc->action = MCLIST_ADD;
849 list_add_tail(&new_mc->list, dst);
854 static void mlx4_en_set_rx_mode(struct net_device *dev)
856 struct mlx4_en_priv *priv = netdev_priv(dev);
861 queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
864 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
865 struct mlx4_en_dev *mdev)
869 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
870 if (netif_msg_rx_status(priv))
871 en_warn(priv, "Entering promiscuous mode\n");
872 priv->flags |= MLX4_EN_FLAG_PROMISC;
874 /* Enable promiscouos mode */
875 switch (mdev->dev->caps.steering_mode) {
876 case MLX4_STEERING_MODE_DEVICE_MANAGED:
877 err = mlx4_flow_steer_promisc_add(mdev->dev,
880 MLX4_FS_ALL_DEFAULT);
882 en_err(priv, "Failed enabling promiscuous mode\n");
883 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
886 case MLX4_STEERING_MODE_B0:
887 err = mlx4_unicast_promisc_add(mdev->dev,
891 en_err(priv, "Failed enabling unicast promiscuous mode\n");
893 /* Add the default qp number as multicast
896 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
897 err = mlx4_multicast_promisc_add(mdev->dev,
901 en_err(priv, "Failed enabling multicast promiscuous mode\n");
902 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
906 case MLX4_STEERING_MODE_A0:
907 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
912 en_err(priv, "Failed enabling promiscuous mode\n");
916 /* Disable port multicast filter (unconditionally) */
917 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
918 0, MLX4_MCAST_DISABLE);
920 en_err(priv, "Failed disabling multicast filter\n");
924 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
925 struct mlx4_en_dev *mdev)
929 if (netif_msg_rx_status(priv))
930 en_warn(priv, "Leaving promiscuous mode\n");
931 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
933 /* Disable promiscouos mode */
934 switch (mdev->dev->caps.steering_mode) {
935 case MLX4_STEERING_MODE_DEVICE_MANAGED:
936 err = mlx4_flow_steer_promisc_remove(mdev->dev,
938 MLX4_FS_ALL_DEFAULT);
940 en_err(priv, "Failed disabling promiscuous mode\n");
941 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
944 case MLX4_STEERING_MODE_B0:
945 err = mlx4_unicast_promisc_remove(mdev->dev,
949 en_err(priv, "Failed disabling unicast promiscuous mode\n");
950 /* Disable Multicast promisc */
951 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
952 err = mlx4_multicast_promisc_remove(mdev->dev,
956 en_err(priv, "Failed disabling multicast promiscuous mode\n");
957 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
961 case MLX4_STEERING_MODE_A0:
962 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
966 en_err(priv, "Failed disabling promiscuous mode\n");
971 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
972 struct net_device *dev,
973 struct mlx4_en_dev *mdev)
975 struct mlx4_en_mc_list *mclist, *tmp;
977 u8 mc_list[16] = {0};
980 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
981 if (dev->flags & IFF_ALLMULTI) {
982 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
983 0, MLX4_MCAST_DISABLE);
985 en_err(priv, "Failed disabling multicast filter\n");
987 /* Add the default qp number as 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_add(mdev->dev,
997 case MLX4_STEERING_MODE_B0:
998 err = mlx4_multicast_promisc_add(mdev->dev,
1003 case MLX4_STEERING_MODE_A0:
1007 en_err(priv, "Failed entering multicast promisc mode\n");
1008 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1011 /* Disable Multicast promisc */
1012 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1013 switch (mdev->dev->caps.steering_mode) {
1014 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1015 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1017 MLX4_FS_MC_DEFAULT);
1020 case MLX4_STEERING_MODE_B0:
1021 err = mlx4_multicast_promisc_remove(mdev->dev,
1026 case MLX4_STEERING_MODE_A0:
1030 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1031 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1034 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1035 0, MLX4_MCAST_DISABLE);
1037 en_err(priv, "Failed disabling multicast filter\n");
1039 /* Flush mcast filter and init it with broadcast address */
1040 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1041 1, MLX4_MCAST_CONFIG);
1043 /* Update multicast list - we cache all addresses so they won't
1044 * change while HW is updated holding the command semaphor */
1045 netif_addr_lock_bh(dev);
1046 mlx4_en_cache_mclist(dev);
1047 netif_addr_unlock_bh(dev);
1048 list_for_each_entry(mclist, &priv->mc_list, list) {
1049 mcast_addr = mlx4_mac_to_u64(mclist->addr);
1050 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1051 mcast_addr, 0, MLX4_MCAST_CONFIG);
1053 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1054 0, MLX4_MCAST_ENABLE);
1056 en_err(priv, "Failed enabling multicast filter\n");
1058 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1059 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1060 if (mclist->action == MCLIST_REM) {
1061 /* detach this address and delete from list */
1062 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1063 mc_list[5] = priv->port;
1064 err = mlx4_multicast_detach(mdev->dev,
1065 &priv->rss_map.indir_qp,
1070 en_err(priv, "Fail to detach multicast address\n");
1072 if (mclist->tunnel_reg_id) {
1073 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1075 en_err(priv, "Failed to detach multicast address\n");
1078 /* remove from list */
1079 list_del(&mclist->list);
1081 } else if (mclist->action == MCLIST_ADD) {
1082 /* attach the address */
1083 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1084 /* needed for B0 steering support */
1085 mc_list[5] = priv->port;
1086 err = mlx4_multicast_attach(mdev->dev,
1087 &priv->rss_map.indir_qp,
1093 en_err(priv, "Fail to attach multicast address\n");
1095 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1096 &mclist->tunnel_reg_id);
1098 en_err(priv, "Failed to attach multicast address\n");
1104 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1105 struct net_device *dev,
1106 struct mlx4_en_dev *mdev)
1108 struct netdev_hw_addr *ha;
1109 struct mlx4_mac_entry *entry;
1110 struct hlist_node *tmp;
1114 struct hlist_head *bucket;
1119 /* Note that we do not need to protect our mac_hash traversal with rcu,
1120 * since all modification code is protected by mdev->state_lock
1123 /* find what to remove */
1124 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1125 bucket = &priv->mac_hash[i];
1126 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1128 netdev_for_each_uc_addr(ha, dev) {
1129 if (ether_addr_equal_64bits(entry->mac,
1136 /* MAC address of the port is not in uc list */
1137 if (ether_addr_equal_64bits(entry->mac,
1142 mac = mlx4_mac_to_u64(entry->mac);
1143 mlx4_en_uc_steer_release(priv, entry->mac,
1146 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1148 hlist_del_rcu(&entry->hlist);
1149 kfree_rcu(entry, rcu);
1150 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1151 entry->mac, priv->port);
1157 /* if we didn't remove anything, there is no use in trying to add
1158 * again once we are in a forced promisc mode state
1160 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1163 prev_flags = priv->flags;
1164 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1166 /* find what to add */
1167 netdev_for_each_uc_addr(ha, dev) {
1169 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1170 hlist_for_each_entry(entry, bucket, hlist) {
1171 if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1178 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1180 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1181 ha->addr, priv->port);
1182 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1185 mac = mlx4_mac_to_u64(ha->addr);
1186 memcpy(entry->mac, ha->addr, ETH_ALEN);
1187 err = mlx4_register_mac(mdev->dev, priv->port, mac);
1189 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1190 ha->addr, priv->port, err);
1192 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1195 err = mlx4_en_uc_steer_add(priv, ha->addr,
1199 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1200 ha->addr, priv->port, err);
1201 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1203 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1206 unsigned int mac_hash;
1207 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1208 ha->addr, priv->port);
1209 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1210 bucket = &priv->mac_hash[mac_hash];
1211 hlist_add_head_rcu(&entry->hlist, bucket);
1216 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1217 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1219 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1220 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1225 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1227 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1229 struct mlx4_en_dev *mdev = priv->mdev;
1230 struct net_device *dev = priv->dev;
1232 mutex_lock(&mdev->state_lock);
1233 if (!mdev->device_up) {
1234 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1237 if (!priv->port_up) {
1238 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1242 if (!netif_carrier_ok(dev)) {
1243 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1244 if (priv->port_state.link_state) {
1245 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1246 netif_carrier_on(dev);
1247 en_dbg(LINK, priv, "Link Up\n");
1252 if (dev->priv_flags & IFF_UNICAST_FLT)
1253 mlx4_en_do_uc_filter(priv, dev, mdev);
1255 /* Promsicuous mode: disable all filters */
1256 if ((dev->flags & IFF_PROMISC) ||
1257 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1258 mlx4_en_set_promisc_mode(priv, mdev);
1262 /* Not in promiscuous mode */
1263 if (priv->flags & MLX4_EN_FLAG_PROMISC)
1264 mlx4_en_clear_promisc_mode(priv, mdev);
1266 mlx4_en_do_multicast(priv, dev, mdev);
1268 mutex_unlock(&mdev->state_lock);
1271 #ifdef CONFIG_NET_POLL_CONTROLLER
1272 static void mlx4_en_netpoll(struct net_device *dev)
1274 struct mlx4_en_priv *priv = netdev_priv(dev);
1275 struct mlx4_en_cq *cq;
1278 for (i = 0; i < priv->rx_ring_num; i++) {
1279 cq = priv->rx_cq[i];
1280 napi_schedule(&cq->napi);
1285 static void mlx4_en_tx_timeout(struct net_device *dev)
1287 struct mlx4_en_priv *priv = netdev_priv(dev);
1288 struct mlx4_en_dev *mdev = priv->mdev;
1291 if (netif_msg_timer(priv))
1292 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1294 for (i = 0; i < priv->tx_ring_num; i++) {
1295 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1297 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1298 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1299 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1302 priv->port_stats.tx_timeout++;
1303 en_dbg(DRV, priv, "Scheduling watchdog\n");
1304 queue_work(mdev->workqueue, &priv->watchdog_task);
1308 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1310 struct mlx4_en_priv *priv = netdev_priv(dev);
1312 spin_lock_bh(&priv->stats_lock);
1313 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1314 spin_unlock_bh(&priv->stats_lock);
1316 return &priv->ret_stats;
1319 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1321 struct mlx4_en_cq *cq;
1324 /* If we haven't received a specific coalescing setting
1325 * (module param), we set the moderation parameters as follows:
1326 * - moder_cnt is set to the number of mtu sized packets to
1327 * satisfy our coalescing target.
1328 * - moder_time is set to a fixed value.
1330 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1331 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1332 priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1333 priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1334 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1335 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1337 /* Setup cq moderation params */
1338 for (i = 0; i < priv->rx_ring_num; i++) {
1339 cq = priv->rx_cq[i];
1340 cq->moder_cnt = priv->rx_frames;
1341 cq->moder_time = priv->rx_usecs;
1342 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1343 priv->last_moder_packets[i] = 0;
1344 priv->last_moder_bytes[i] = 0;
1347 for (i = 0; i < priv->tx_ring_num; i++) {
1348 cq = priv->tx_cq[i];
1349 cq->moder_cnt = priv->tx_frames;
1350 cq->moder_time = priv->tx_usecs;
1353 /* Reset auto-moderation params */
1354 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1355 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1356 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1357 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1358 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1359 priv->adaptive_rx_coal = 1;
1360 priv->last_moder_jiffies = 0;
1361 priv->last_moder_tx_packets = 0;
1364 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1366 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1367 struct mlx4_en_cq *cq;
1368 unsigned long packets;
1370 unsigned long avg_pkt_size;
1371 unsigned long rx_packets;
1372 unsigned long rx_bytes;
1373 unsigned long rx_pkt_diff;
1377 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1380 for (ring = 0; ring < priv->rx_ring_num; ring++) {
1381 spin_lock_bh(&priv->stats_lock);
1382 rx_packets = priv->rx_ring[ring]->packets;
1383 rx_bytes = priv->rx_ring[ring]->bytes;
1384 spin_unlock_bh(&priv->stats_lock);
1386 rx_pkt_diff = ((unsigned long) (rx_packets -
1387 priv->last_moder_packets[ring]));
1388 packets = rx_pkt_diff;
1389 rate = packets * HZ / period;
1390 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1391 priv->last_moder_bytes[ring])) / packets : 0;
1393 /* Apply auto-moderation only when packet rate
1394 * exceeds a rate that it matters */
1395 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1396 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1397 if (rate < priv->pkt_rate_low)
1398 moder_time = priv->rx_usecs_low;
1399 else if (rate > priv->pkt_rate_high)
1400 moder_time = priv->rx_usecs_high;
1402 moder_time = (rate - priv->pkt_rate_low) *
1403 (priv->rx_usecs_high - priv->rx_usecs_low) /
1404 (priv->pkt_rate_high - priv->pkt_rate_low) +
1407 moder_time = priv->rx_usecs_low;
1410 if (moder_time != priv->last_moder_time[ring]) {
1411 priv->last_moder_time[ring] = moder_time;
1412 cq = priv->rx_cq[ring];
1413 cq->moder_time = moder_time;
1414 cq->moder_cnt = priv->rx_frames;
1415 err = mlx4_en_set_cq_moder(priv, cq);
1417 en_err(priv, "Failed modifying moderation for cq:%d\n",
1420 priv->last_moder_packets[ring] = rx_packets;
1421 priv->last_moder_bytes[ring] = rx_bytes;
1424 priv->last_moder_jiffies = jiffies;
1427 static void mlx4_en_do_get_stats(struct work_struct *work)
1429 struct delayed_work *delay = to_delayed_work(work);
1430 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1432 struct mlx4_en_dev *mdev = priv->mdev;
1435 mutex_lock(&mdev->state_lock);
1436 if (mdev->device_up) {
1437 if (priv->port_up) {
1438 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1440 en_dbg(HW, priv, "Could not update stats\n");
1442 mlx4_en_auto_moderation(priv);
1445 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1447 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1448 mlx4_en_do_set_mac(priv, priv->current_mac);
1449 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1451 mutex_unlock(&mdev->state_lock);
1454 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1457 static void mlx4_en_service_task(struct work_struct *work)
1459 struct delayed_work *delay = to_delayed_work(work);
1460 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1462 struct mlx4_en_dev *mdev = priv->mdev;
1464 mutex_lock(&mdev->state_lock);
1465 if (mdev->device_up) {
1466 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1467 mlx4_en_ptp_overflow_check(mdev);
1469 queue_delayed_work(mdev->workqueue, &priv->service_task,
1470 SERVICE_TASK_DELAY);
1472 mutex_unlock(&mdev->state_lock);
1475 static void mlx4_en_linkstate(struct work_struct *work)
1477 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1479 struct mlx4_en_dev *mdev = priv->mdev;
1480 int linkstate = priv->link_state;
1482 mutex_lock(&mdev->state_lock);
1483 /* If observable port state changed set carrier state and
1484 * report to system log */
1485 if (priv->last_link_state != linkstate) {
1486 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1487 en_info(priv, "Link Down\n");
1488 netif_carrier_off(priv->dev);
1490 en_info(priv, "Link Up\n");
1491 netif_carrier_on(priv->dev);
1494 priv->last_link_state = linkstate;
1495 mutex_unlock(&mdev->state_lock);
1498 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1500 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1501 int numa_node = priv->mdev->dev->numa_node;
1504 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1507 ret = cpumask_set_cpu_local_first(ring_idx, numa_node,
1508 ring->affinity_mask);
1510 free_cpumask_var(ring->affinity_mask);
1515 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1517 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1520 int mlx4_en_start_port(struct net_device *dev)
1522 struct mlx4_en_priv *priv = netdev_priv(dev);
1523 struct mlx4_en_dev *mdev = priv->mdev;
1524 struct mlx4_en_cq *cq;
1525 struct mlx4_en_tx_ring *tx_ring;
1531 u8 mc_list[16] = {0};
1533 if (priv->port_up) {
1534 en_dbg(DRV, priv, "start port called while port already up\n");
1538 INIT_LIST_HEAD(&priv->mc_list);
1539 INIT_LIST_HEAD(&priv->curr_list);
1540 INIT_LIST_HEAD(&priv->ethtool_list);
1541 memset(&priv->ethtool_rules[0], 0,
1542 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1544 /* Calculate Rx buf size */
1545 dev->mtu = min(dev->mtu, priv->max_mtu);
1546 mlx4_en_calc_rx_buf(dev);
1547 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1549 /* Configure rx cq's and rings */
1550 err = mlx4_en_activate_rx_rings(priv);
1552 en_err(priv, "Failed to activate RX rings\n");
1555 for (i = 0; i < priv->rx_ring_num; i++) {
1556 cq = priv->rx_cq[i];
1558 mlx4_en_cq_init_lock(cq);
1560 err = mlx4_en_init_affinity_hint(priv, i);
1562 en_err(priv, "Failed preparing IRQ affinity hint\n");
1566 err = mlx4_en_activate_cq(priv, cq, i);
1568 en_err(priv, "Failed activating Rx CQ\n");
1569 mlx4_en_free_affinity_hint(priv, i);
1573 for (j = 0; j < cq->size; j++) {
1574 struct mlx4_cqe *cqe = NULL;
1576 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1578 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1581 err = mlx4_en_set_cq_moder(priv, cq);
1583 en_err(priv, "Failed setting cq moderation parameters\n");
1584 mlx4_en_deactivate_cq(priv, cq);
1585 mlx4_en_free_affinity_hint(priv, i);
1588 mlx4_en_arm_cq(priv, cq);
1589 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1594 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1595 err = mlx4_en_get_qp(priv);
1597 en_err(priv, "Failed getting eth qp\n");
1600 mdev->mac_removed[priv->port] = 0;
1602 err = mlx4_en_config_rss_steer(priv);
1604 en_err(priv, "Failed configuring rss steering\n");
1608 err = mlx4_en_create_drop_qp(priv);
1612 /* Configure tx cq's and rings */
1613 for (i = 0; i < priv->tx_ring_num; i++) {
1615 cq = priv->tx_cq[i];
1616 err = mlx4_en_activate_cq(priv, cq, i);
1618 en_err(priv, "Failed allocating Tx CQ\n");
1621 err = mlx4_en_set_cq_moder(priv, cq);
1623 en_err(priv, "Failed setting cq moderation parameters\n");
1624 mlx4_en_deactivate_cq(priv, cq);
1627 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1628 cq->buf->wqe_index = cpu_to_be16(0xffff);
1630 /* Configure ring */
1631 tx_ring = priv->tx_ring[i];
1632 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1633 i / priv->num_tx_rings_p_up);
1635 en_err(priv, "Failed allocating Tx ring\n");
1636 mlx4_en_deactivate_cq(priv, cq);
1639 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1641 /* Arm CQ for TX completions */
1642 mlx4_en_arm_cq(priv, cq);
1644 /* Set initial ownership of all Tx TXBBs to SW (1) */
1645 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1646 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1650 /* Configure port */
1651 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1652 priv->rx_skb_size + ETH_FCS_LEN,
1653 priv->prof->tx_pause,
1655 priv->prof->rx_pause,
1656 priv->prof->rx_ppp);
1658 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1662 /* Set default qp number */
1663 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1665 en_err(priv, "Failed setting default qp numbers\n");
1669 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1670 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1672 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1679 en_dbg(HW, priv, "Initializing port\n");
1680 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1682 en_err(priv, "Failed Initializing port\n");
1686 /* Attach rx QP to bradcast address */
1687 memset(&mc_list[10], 0xff, ETH_ALEN);
1688 mc_list[5] = priv->port; /* needed for B0 steering support */
1689 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1690 priv->port, 0, MLX4_PROT_ETH,
1691 &priv->broadcast_id))
1692 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1694 /* Must redo promiscuous mode setup. */
1695 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1697 /* Schedule multicast task to populate multicast list */
1698 queue_work(mdev->workqueue, &priv->rx_mode_task);
1700 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1702 #ifdef CONFIG_MLX4_EN_VXLAN
1703 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1704 vxlan_get_rx_port(dev);
1706 priv->port_up = true;
1707 netif_tx_start_all_queues(dev);
1708 netif_device_attach(dev);
1713 while (tx_index--) {
1714 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1715 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1717 mlx4_en_destroy_drop_qp(priv);
1719 mlx4_en_release_rss_steer(priv);
1721 mlx4_en_put_qp(priv);
1723 while (rx_index--) {
1724 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1725 mlx4_en_free_affinity_hint(priv, i);
1727 for (i = 0; i < priv->rx_ring_num; i++)
1728 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1730 return err; /* need to close devices */
1734 void mlx4_en_stop_port(struct net_device *dev, int detach)
1736 struct mlx4_en_priv *priv = netdev_priv(dev);
1737 struct mlx4_en_dev *mdev = priv->mdev;
1738 struct mlx4_en_mc_list *mclist, *tmp;
1739 struct ethtool_flow_id *flow, *tmp_flow;
1741 u8 mc_list[16] = {0};
1743 if (!priv->port_up) {
1744 en_dbg(DRV, priv, "stop port called while port already down\n");
1749 mlx4_CLOSE_PORT(mdev->dev, priv->port);
1751 /* Synchronize with tx routine */
1752 netif_tx_lock_bh(dev);
1754 netif_device_detach(dev);
1755 netif_tx_stop_all_queues(dev);
1756 netif_tx_unlock_bh(dev);
1758 netif_tx_disable(dev);
1760 /* Set port as not active */
1761 priv->port_up = false;
1763 /* Promsicuous mode */
1764 if (mdev->dev->caps.steering_mode ==
1765 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1766 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1767 MLX4_EN_FLAG_MC_PROMISC);
1768 mlx4_flow_steer_promisc_remove(mdev->dev,
1770 MLX4_FS_ALL_DEFAULT);
1771 mlx4_flow_steer_promisc_remove(mdev->dev,
1773 MLX4_FS_MC_DEFAULT);
1774 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1775 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1777 /* Disable promiscouos mode */
1778 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1781 /* Disable Multicast promisc */
1782 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1783 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1785 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1789 /* Detach All multicasts */
1790 memset(&mc_list[10], 0xff, ETH_ALEN);
1791 mc_list[5] = priv->port; /* needed for B0 steering support */
1792 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1793 MLX4_PROT_ETH, priv->broadcast_id);
1794 list_for_each_entry(mclist, &priv->curr_list, list) {
1795 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1796 mc_list[5] = priv->port;
1797 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1798 mc_list, MLX4_PROT_ETH, mclist->reg_id);
1799 if (mclist->tunnel_reg_id)
1800 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1802 mlx4_en_clear_list(dev);
1803 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1804 list_del(&mclist->list);
1808 /* Flush multicast filter */
1809 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1811 /* Remove flow steering rules for the port*/
1812 if (mdev->dev->caps.steering_mode ==
1813 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1815 list_for_each_entry_safe(flow, tmp_flow,
1816 &priv->ethtool_list, list) {
1817 mlx4_flow_detach(mdev->dev, flow->id);
1818 list_del(&flow->list);
1822 mlx4_en_destroy_drop_qp(priv);
1825 for (i = 0; i < priv->tx_ring_num; i++) {
1826 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1827 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1831 for (i = 0; i < priv->tx_ring_num; i++)
1832 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1835 mlx4_en_release_rss_steer(priv);
1837 /* Unregister Mac address for the port */
1838 mlx4_en_put_qp(priv);
1839 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1840 mdev->mac_removed[priv->port] = 1;
1843 for (i = 0; i < priv->rx_ring_num; i++) {
1844 struct mlx4_en_cq *cq = priv->rx_cq[i];
1847 while (!mlx4_en_cq_lock_napi(cq)) {
1848 pr_info("CQ %d locked\n", i);
1853 napi_synchronize(&cq->napi);
1854 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1855 mlx4_en_deactivate_cq(priv, cq);
1857 mlx4_en_free_affinity_hint(priv, i);
1861 static void mlx4_en_restart(struct work_struct *work)
1863 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1865 struct mlx4_en_dev *mdev = priv->mdev;
1866 struct net_device *dev = priv->dev;
1868 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1870 mutex_lock(&mdev->state_lock);
1871 if (priv->port_up) {
1872 mlx4_en_stop_port(dev, 1);
1873 if (mlx4_en_start_port(dev))
1874 en_err(priv, "Failed restarting port %d\n", priv->port);
1876 mutex_unlock(&mdev->state_lock);
1879 static void mlx4_en_clear_stats(struct net_device *dev)
1881 struct mlx4_en_priv *priv = netdev_priv(dev);
1882 struct mlx4_en_dev *mdev = priv->mdev;
1885 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1886 en_dbg(HW, priv, "Failed dumping statistics\n");
1888 memset(&priv->stats, 0, sizeof(priv->stats));
1889 memset(&priv->pstats, 0, sizeof(priv->pstats));
1890 memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1891 memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1893 for (i = 0; i < priv->tx_ring_num; i++) {
1894 priv->tx_ring[i]->bytes = 0;
1895 priv->tx_ring[i]->packets = 0;
1896 priv->tx_ring[i]->tx_csum = 0;
1898 for (i = 0; i < priv->rx_ring_num; i++) {
1899 priv->rx_ring[i]->bytes = 0;
1900 priv->rx_ring[i]->packets = 0;
1901 priv->rx_ring[i]->csum_ok = 0;
1902 priv->rx_ring[i]->csum_none = 0;
1903 priv->rx_ring[i]->csum_complete = 0;
1907 static int mlx4_en_open(struct net_device *dev)
1909 struct mlx4_en_priv *priv = netdev_priv(dev);
1910 struct mlx4_en_dev *mdev = priv->mdev;
1913 mutex_lock(&mdev->state_lock);
1915 if (!mdev->device_up) {
1916 en_err(priv, "Cannot open - device down/disabled\n");
1921 /* Reset HW statistics and SW counters */
1922 mlx4_en_clear_stats(dev);
1924 err = mlx4_en_start_port(dev);
1926 en_err(priv, "Failed starting port:%d\n", priv->port);
1929 mutex_unlock(&mdev->state_lock);
1934 static int mlx4_en_close(struct net_device *dev)
1936 struct mlx4_en_priv *priv = netdev_priv(dev);
1937 struct mlx4_en_dev *mdev = priv->mdev;
1939 en_dbg(IFDOWN, priv, "Close port called\n");
1941 mutex_lock(&mdev->state_lock);
1943 mlx4_en_stop_port(dev, 0);
1944 netif_carrier_off(dev);
1946 mutex_unlock(&mdev->state_lock);
1950 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1954 #ifdef CONFIG_RFS_ACCEL
1955 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1956 priv->dev->rx_cpu_rmap = NULL;
1959 for (i = 0; i < priv->tx_ring_num; i++) {
1960 if (priv->tx_ring && priv->tx_ring[i])
1961 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1962 if (priv->tx_cq && priv->tx_cq[i])
1963 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1966 for (i = 0; i < priv->rx_ring_num; i++) {
1967 if (priv->rx_ring[i])
1968 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1969 priv->prof->rx_ring_size, priv->stride);
1971 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1974 if (priv->base_tx_qpn) {
1975 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1976 priv->base_tx_qpn = 0;
1980 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1982 struct mlx4_en_port_profile *prof = priv->prof;
1986 /* Create tx Rings */
1987 for (i = 0; i < priv->tx_ring_num; i++) {
1988 node = cpu_to_node(i % num_online_cpus());
1989 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1990 prof->tx_ring_size, i, TX, node))
1993 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1994 prof->tx_ring_size, TXBB_SIZE,
1999 /* Create rx Rings */
2000 for (i = 0; i < priv->rx_ring_num; i++) {
2001 node = cpu_to_node(i % num_online_cpus());
2002 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2003 prof->rx_ring_size, i, RX, node))
2006 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2007 prof->rx_ring_size, priv->stride,
2012 #ifdef CONFIG_RFS_ACCEL
2013 if (priv->mdev->dev->caps.comp_pool) {
2014 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
2015 if (!priv->dev->rx_cpu_rmap)
2023 en_err(priv, "Failed to allocate NIC resources\n");
2024 for (i = 0; i < priv->rx_ring_num; i++) {
2025 if (priv->rx_ring[i])
2026 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2030 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2032 for (i = 0; i < priv->tx_ring_num; i++) {
2033 if (priv->tx_ring[i])
2034 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2036 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2042 void mlx4_en_destroy_netdev(struct net_device *dev)
2044 struct mlx4_en_priv *priv = netdev_priv(dev);
2045 struct mlx4_en_dev *mdev = priv->mdev;
2047 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2049 /* Unregister device - this will close the port if it was up */
2050 if (priv->registered)
2051 unregister_netdev(dev);
2053 if (priv->allocated)
2054 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2056 cancel_delayed_work(&priv->stats_task);
2057 cancel_delayed_work(&priv->service_task);
2058 /* flush any pending task for this netdev */
2059 flush_workqueue(mdev->workqueue);
2061 /* Detach the netdev so tasks would not attempt to access it */
2062 mutex_lock(&mdev->state_lock);
2063 mdev->pndev[priv->port] = NULL;
2064 mutex_unlock(&mdev->state_lock);
2066 mlx4_en_free_resources(priv);
2068 kfree(priv->tx_ring);
2074 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2076 struct mlx4_en_priv *priv = netdev_priv(dev);
2077 struct mlx4_en_dev *mdev = priv->mdev;
2080 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2083 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2084 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2089 if (netif_running(dev)) {
2090 mutex_lock(&mdev->state_lock);
2091 if (!mdev->device_up) {
2092 /* NIC is probably restarting - let watchdog task reset
2094 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2096 mlx4_en_stop_port(dev, 1);
2097 err = mlx4_en_start_port(dev);
2099 en_err(priv, "Failed restarting port:%d\n",
2101 queue_work(mdev->workqueue, &priv->watchdog_task);
2104 mutex_unlock(&mdev->state_lock);
2109 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2111 struct mlx4_en_priv *priv = netdev_priv(dev);
2112 struct mlx4_en_dev *mdev = priv->mdev;
2113 struct hwtstamp_config config;
2115 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2118 /* reserved for future extensions */
2122 /* device doesn't support time stamping */
2123 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2126 /* TX HW timestamp */
2127 switch (config.tx_type) {
2128 case HWTSTAMP_TX_OFF:
2129 case HWTSTAMP_TX_ON:
2135 /* RX HW timestamp */
2136 switch (config.rx_filter) {
2137 case HWTSTAMP_FILTER_NONE:
2139 case HWTSTAMP_FILTER_ALL:
2140 case HWTSTAMP_FILTER_SOME:
2141 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2142 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2143 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2144 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2145 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2146 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2147 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2148 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2149 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2150 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2151 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2152 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2153 config.rx_filter = HWTSTAMP_FILTER_ALL;
2159 if (mlx4_en_reset_config(dev, config, dev->features)) {
2160 config.tx_type = HWTSTAMP_TX_OFF;
2161 config.rx_filter = HWTSTAMP_FILTER_NONE;
2164 return copy_to_user(ifr->ifr_data, &config,
2165 sizeof(config)) ? -EFAULT : 0;
2168 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2170 struct mlx4_en_priv *priv = netdev_priv(dev);
2172 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2173 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2176 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2180 return mlx4_en_hwtstamp_set(dev, ifr);
2182 return mlx4_en_hwtstamp_get(dev, ifr);
2188 static int mlx4_en_set_features(struct net_device *netdev,
2189 netdev_features_t features)
2191 struct mlx4_en_priv *priv = netdev_priv(netdev);
2194 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2195 en_info(priv, "Turn %s RX vlan strip offload\n",
2196 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2197 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2203 if (features & NETIF_F_LOOPBACK)
2204 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2207 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2209 mlx4_en_update_loopback_state(netdev, features);
2215 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2217 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2218 struct mlx4_en_dev *mdev = en_priv->mdev;
2219 u64 mac_u64 = mlx4_mac_to_u64(mac);
2221 if (!is_valid_ether_addr(mac))
2224 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2227 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2229 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2230 struct mlx4_en_dev *mdev = en_priv->mdev;
2232 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2235 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2237 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2238 struct mlx4_en_dev *mdev = en_priv->mdev;
2240 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2243 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2245 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2246 struct mlx4_en_dev *mdev = en_priv->mdev;
2248 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2251 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2253 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2254 struct mlx4_en_dev *mdev = en_priv->mdev;
2256 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2259 #define PORT_ID_BYTE_LEN 8
2260 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2261 struct netdev_phys_item_id *ppid)
2263 struct mlx4_en_priv *priv = netdev_priv(dev);
2264 struct mlx4_dev *mdev = priv->mdev->dev;
2266 u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2271 ppid->id_len = sizeof(phys_port_id);
2272 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2273 ppid->id[i] = phys_port_id & 0xff;
2279 #ifdef CONFIG_MLX4_EN_VXLAN
2280 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2283 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2286 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2290 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2291 VXLAN_STEER_BY_OUTER_MAC, 1);
2294 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2299 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2300 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
2301 priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
2302 priv->dev->features |= NETIF_F_GSO_UDP_TUNNEL;
2305 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2308 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2310 /* unset offloads */
2311 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2312 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL);
2313 priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL;
2314 priv->dev->features &= ~NETIF_F_GSO_UDP_TUNNEL;
2316 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2317 VXLAN_STEER_BY_OUTER_MAC, 0);
2319 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2321 priv->vxlan_port = 0;
2324 static void mlx4_en_add_vxlan_port(struct net_device *dev,
2325 sa_family_t sa_family, __be16 port)
2327 struct mlx4_en_priv *priv = netdev_priv(dev);
2328 __be16 current_port;
2330 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2333 if (sa_family == AF_INET6)
2336 current_port = priv->vxlan_port;
2337 if (current_port && current_port != port) {
2338 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2339 ntohs(current_port), ntohs(port));
2343 priv->vxlan_port = port;
2344 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2347 static void mlx4_en_del_vxlan_port(struct net_device *dev,
2348 sa_family_t sa_family, __be16 port)
2350 struct mlx4_en_priv *priv = netdev_priv(dev);
2351 __be16 current_port;
2353 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2356 if (sa_family == AF_INET6)
2359 current_port = priv->vxlan_port;
2360 if (current_port != port) {
2361 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2365 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2368 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2369 struct net_device *dev,
2370 netdev_features_t features)
2372 return vxlan_features_check(skb, features);
2376 static const struct net_device_ops mlx4_netdev_ops = {
2377 .ndo_open = mlx4_en_open,
2378 .ndo_stop = mlx4_en_close,
2379 .ndo_start_xmit = mlx4_en_xmit,
2380 .ndo_select_queue = mlx4_en_select_queue,
2381 .ndo_get_stats = mlx4_en_get_stats,
2382 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2383 .ndo_set_mac_address = mlx4_en_set_mac,
2384 .ndo_validate_addr = eth_validate_addr,
2385 .ndo_change_mtu = mlx4_en_change_mtu,
2386 .ndo_do_ioctl = mlx4_en_ioctl,
2387 .ndo_tx_timeout = mlx4_en_tx_timeout,
2388 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2389 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2390 #ifdef CONFIG_NET_POLL_CONTROLLER
2391 .ndo_poll_controller = mlx4_en_netpoll,
2393 .ndo_set_features = mlx4_en_set_features,
2394 .ndo_setup_tc = mlx4_en_setup_tc,
2395 #ifdef CONFIG_RFS_ACCEL
2396 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2398 #ifdef CONFIG_NET_RX_BUSY_POLL
2399 .ndo_busy_poll = mlx4_en_low_latency_recv,
2401 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2402 #ifdef CONFIG_MLX4_EN_VXLAN
2403 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
2404 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
2405 .ndo_features_check = mlx4_en_features_check,
2409 static const struct net_device_ops mlx4_netdev_ops_master = {
2410 .ndo_open = mlx4_en_open,
2411 .ndo_stop = mlx4_en_close,
2412 .ndo_start_xmit = mlx4_en_xmit,
2413 .ndo_select_queue = mlx4_en_select_queue,
2414 .ndo_get_stats = mlx4_en_get_stats,
2415 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2416 .ndo_set_mac_address = mlx4_en_set_mac,
2417 .ndo_validate_addr = eth_validate_addr,
2418 .ndo_change_mtu = mlx4_en_change_mtu,
2419 .ndo_tx_timeout = mlx4_en_tx_timeout,
2420 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2421 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2422 .ndo_set_vf_mac = mlx4_en_set_vf_mac,
2423 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2424 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2425 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2426 .ndo_get_vf_config = mlx4_en_get_vf_config,
2427 #ifdef CONFIG_NET_POLL_CONTROLLER
2428 .ndo_poll_controller = mlx4_en_netpoll,
2430 .ndo_set_features = mlx4_en_set_features,
2431 .ndo_setup_tc = mlx4_en_setup_tc,
2432 #ifdef CONFIG_RFS_ACCEL
2433 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2435 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2436 #ifdef CONFIG_MLX4_EN_VXLAN
2437 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
2438 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
2439 .ndo_features_check = mlx4_en_features_check,
2443 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2444 struct mlx4_en_port_profile *prof)
2446 struct net_device *dev;
2447 struct mlx4_en_priv *priv;
2452 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2453 MAX_TX_RINGS, MAX_RX_RINGS);
2457 netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2458 netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2460 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2461 dev->dev_port = port - 1;
2464 * Initialize driver private data
2467 priv = netdev_priv(dev);
2468 memset(priv, 0, sizeof(struct mlx4_en_priv));
2469 spin_lock_init(&priv->stats_lock);
2470 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2471 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2472 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2473 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2474 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2475 #ifdef CONFIG_MLX4_EN_VXLAN
2476 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2477 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2479 #ifdef CONFIG_RFS_ACCEL
2480 INIT_LIST_HEAD(&priv->filters);
2481 spin_lock_init(&priv->filters_lock);
2486 priv->ddev = &mdev->pdev->dev;
2489 priv->port_up = false;
2490 priv->flags = prof->flags;
2491 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
2492 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2493 MLX4_WQE_CTRL_SOLICITED);
2494 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2495 priv->tx_ring_num = prof->tx_ring_num;
2496 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
2497 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
2499 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2501 if (!priv->tx_ring) {
2505 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2511 priv->rx_ring_num = prof->rx_ring_num;
2512 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2513 priv->cqe_size = mdev->dev->caps.cqe_size;
2514 priv->mac_index = -1;
2515 priv->msg_enable = MLX4_EN_MSG_LEVEL;
2516 #ifdef CONFIG_MLX4_EN_DCB
2517 if (!mlx4_is_slave(priv->mdev->dev)) {
2518 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2519 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2521 en_info(priv, "enabling only PFC DCB ops\n");
2522 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2527 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2528 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2530 /* Query for default mac and max mtu */
2531 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2533 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
2534 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
2535 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
2537 /* Set default MAC */
2538 dev->addr_len = ETH_ALEN;
2539 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2540 if (!is_valid_ether_addr(dev->dev_addr)) {
2541 if (mlx4_is_slave(priv->mdev->dev)) {
2542 eth_hw_addr_random(dev);
2543 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2544 mac_u64 = mlx4_mac_to_u64(dev->dev_addr);
2545 mdev->dev->caps.def_mac[priv->port] = mac_u64;
2547 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2548 priv->port, dev->dev_addr);
2554 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
2556 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2557 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2558 err = mlx4_en_alloc_resources(priv);
2562 /* Initialize time stamping config */
2563 priv->hwtstamp_config.flags = 0;
2564 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2565 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2567 /* Allocate page for receive rings */
2568 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2569 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2571 en_err(priv, "Failed to allocate page for rx qps\n");
2574 priv->allocated = 1;
2577 * Initialize netdev entry points
2579 if (mlx4_is_master(priv->mdev->dev))
2580 dev->netdev_ops = &mlx4_netdev_ops_master;
2582 dev->netdev_ops = &mlx4_netdev_ops;
2583 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2584 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2585 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2587 dev->ethtool_ops = &mlx4_en_ethtool_ops;
2590 * Set driver features
2592 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2593 if (mdev->LSO_support)
2594 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2596 dev->vlan_features = dev->hw_features;
2598 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2599 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2600 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2601 NETIF_F_HW_VLAN_CTAG_FILTER;
2602 dev->hw_features |= NETIF_F_LOOPBACK |
2603 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
2605 if (mdev->dev->caps.steering_mode ==
2606 MLX4_STEERING_MODE_DEVICE_MANAGED &&
2607 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
2608 dev->hw_features |= NETIF_F_NTUPLE;
2610 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2611 dev->priv_flags |= IFF_UNICAST_FLT;
2613 /* Setting a default hash function value */
2614 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
2615 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
2616 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
2617 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
2620 "No RSS hash capabilities exposed, using Toeplitz\n");
2621 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
2624 mdev->pndev[port] = dev;
2626 netif_carrier_off(dev);
2627 mlx4_en_set_default_moderation(priv);
2629 err = register_netdev(dev);
2631 en_err(priv, "Netdev registration failed for port %d\n", port);
2634 priv->registered = 1;
2636 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2637 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2639 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2641 /* Configure port */
2642 mlx4_en_calc_rx_buf(dev);
2643 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2644 priv->rx_skb_size + ETH_FCS_LEN,
2645 prof->tx_pause, prof->tx_ppp,
2646 prof->rx_pause, prof->rx_ppp);
2648 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
2653 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2654 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
2656 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
2663 en_warn(priv, "Initializing port\n");
2664 err = mlx4_INIT_PORT(mdev->dev, priv->port);
2666 en_err(priv, "Failed Initializing port\n");
2669 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2671 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2672 queue_delayed_work(mdev->workqueue, &priv->service_task,
2673 SERVICE_TASK_DELAY);
2678 mlx4_en_destroy_netdev(dev);
2682 int mlx4_en_reset_config(struct net_device *dev,
2683 struct hwtstamp_config ts_config,
2684 netdev_features_t features)
2686 struct mlx4_en_priv *priv = netdev_priv(dev);
2687 struct mlx4_en_dev *mdev = priv->mdev;
2691 if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
2692 priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
2693 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX))
2694 return 0; /* Nothing to change */
2696 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
2697 (features & NETIF_F_HW_VLAN_CTAG_RX) &&
2698 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
2699 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
2703 mutex_lock(&mdev->state_lock);
2704 if (priv->port_up) {
2706 mlx4_en_stop_port(dev, 1);
2709 mlx4_en_free_resources(priv);
2711 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
2712 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX));
2714 priv->hwtstamp_config.tx_type = ts_config.tx_type;
2715 priv->hwtstamp_config.rx_filter = ts_config.rx_filter;
2717 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2718 if (features & NETIF_F_HW_VLAN_CTAG_RX)
2719 dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
2721 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
2722 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
2723 /* RX time-stamping is OFF, update the RX vlan offload
2724 * to the latest wanted state
2726 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
2727 dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
2729 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
2732 /* RX vlan offload and RX time-stamping can't co-exist !
2733 * Regardless of the caller's choice,
2734 * Turn Off RX vlan offload in case of time-stamping is ON
2736 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
2737 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
2738 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
2739 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
2742 err = mlx4_en_alloc_resources(priv);
2744 en_err(priv, "Failed reallocating port resources\n");
2748 err = mlx4_en_start_port(dev);
2750 en_err(priv, "Failed starting port\n");
2754 mutex_unlock(&mdev->state_lock);
2755 netdev_features_change(dev);