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net/mlx4_en: Move filters cleanup to a proper location
[linux/fpc-iii.git] / drivers / net / ethernet / mellanox / mlx4 / en_netdev.c
blob5d809c8c27c4c870cde8c68999bcccc3b206c7ec
1 /*
2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
3 *
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:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 *
32 */
33
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>
40 #include <net/ip.h>
41 #include <net/busy_poll.h>
42 #include <net/vxlan.h>
43 #include <net/devlink.h>
44
45 #include <linux/mlx4/driver.h>
46 #include <linux/mlx4/device.h>
47 #include <linux/mlx4/cmd.h>
48 #include <linux/mlx4/cq.h>
49
50 #include "mlx4_en.h"
51 #include "en_port.h"
52
53 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
54 {
55 struct mlx4_en_priv *priv = netdev_priv(dev);
56 int i;
57 unsigned int offset = 0;
58
59 if (up && up != MLX4_EN_NUM_UP)
60 return -EINVAL;
61
62 netdev_set_num_tc(dev, up);
63
64 /* Partition Tx queues evenly amongst UP's */
65 for (i = 0; i < up; i++) {
66 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
67 offset += priv->num_tx_rings_p_up;
68 }
69
70 return 0;
71 }
72
73 static int __mlx4_en_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
74 struct tc_to_netdev *tc)
75 {
76 if (tc->type != TC_SETUP_MQPRIO)
77 return -EINVAL;
78
79 return mlx4_en_setup_tc(dev, tc->tc);
80 }
81
82 #ifdef CONFIG_RFS_ACCEL
83
84 struct mlx4_en_filter {
85 struct list_head next;
86 struct work_struct work;
87
88 u8 ip_proto;
89 __be32 src_ip;
90 __be32 dst_ip;
91 __be16 src_port;
92 __be16 dst_port;
93
94 int rxq_index;
95 struct mlx4_en_priv *priv;
96 u32 flow_id; /* RFS infrastructure id */
97 int id; /* mlx4_en driver id */
98 u64 reg_id; /* Flow steering API id */
99 u8 activated; /* Used to prevent expiry before filter
100 * is attached
101 */
102 struct hlist_node filter_chain;
103 };
104
105 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
106
107 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
108 {
109 switch (ip_proto) {
110 case IPPROTO_UDP:
111 return MLX4_NET_TRANS_RULE_ID_UDP;
112 case IPPROTO_TCP:
113 return MLX4_NET_TRANS_RULE_ID_TCP;
114 default:
115 return MLX4_NET_TRANS_RULE_NUM;
116 }
117 };
118
119 static void mlx4_en_filter_work(struct work_struct *work)
120 {
121 struct mlx4_en_filter *filter = container_of(work,
122 struct mlx4_en_filter,
123 work);
124 struct mlx4_en_priv *priv = filter->priv;
125 struct mlx4_spec_list spec_tcp_udp = {
126 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
127 {
128 .tcp_udp = {
129 .dst_port = filter->dst_port,
130 .dst_port_msk = (__force __be16)-1,
131 .src_port = filter->src_port,
132 .src_port_msk = (__force __be16)-1,
133 },
134 },
135 };
136 struct mlx4_spec_list spec_ip = {
137 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
138 {
139 .ipv4 = {
140 .dst_ip = filter->dst_ip,
141 .dst_ip_msk = (__force __be32)-1,
142 .src_ip = filter->src_ip,
143 .src_ip_msk = (__force __be32)-1,
144 },
145 },
146 };
147 struct mlx4_spec_list spec_eth = {
148 .id = MLX4_NET_TRANS_RULE_ID_ETH,
149 };
150 struct mlx4_net_trans_rule rule = {
151 .list = LIST_HEAD_INIT(rule.list),
152 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
153 .exclusive = 1,
154 .allow_loopback = 1,
155 .promisc_mode = MLX4_FS_REGULAR,
156 .port = priv->port,
157 .priority = MLX4_DOMAIN_RFS,
158 };
159 int rc;
160 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
161
162 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
163 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
164 filter->ip_proto);
165 goto ignore;
166 }
167 list_add_tail(&spec_eth.list, &rule.list);
168 list_add_tail(&spec_ip.list, &rule.list);
169 list_add_tail(&spec_tcp_udp.list, &rule.list);
170
171 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
172 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
173 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
174
175 filter->activated = 0;
176
177 if (filter->reg_id) {
178 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
179 if (rc && rc != -ENOENT)
180 en_err(priv, "Error detaching flow. rc = %d\n", rc);
181 }
182
183 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
184 if (rc)
185 en_err(priv, "Error attaching flow. err = %d\n", rc);
186
187 ignore:
188 mlx4_en_filter_rfs_expire(priv);
189
190 filter->activated = 1;
191 }
192
193 static inline struct hlist_head *
194 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
195 __be16 src_port, __be16 dst_port)
196 {
197 unsigned long l;
198 int bucket_idx;
199
200 l = (__force unsigned long)src_port |
201 ((__force unsigned long)dst_port << 2);
202 l ^= (__force unsigned long)(src_ip ^ dst_ip);
203
204 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
205
206 return &priv->filter_hash[bucket_idx];
207 }
208
209 static struct mlx4_en_filter *
210 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
211 __be32 dst_ip, u8 ip_proto, __be16 src_port,
212 __be16 dst_port, u32 flow_id)
213 {
214 struct mlx4_en_filter *filter = NULL;
215
216 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
217 if (!filter)
218 return NULL;
219
220 filter->priv = priv;
221 filter->rxq_index = rxq_index;
222 INIT_WORK(&filter->work, mlx4_en_filter_work);
223
224 filter->src_ip = src_ip;
225 filter->dst_ip = dst_ip;
226 filter->ip_proto = ip_proto;
227 filter->src_port = src_port;
228 filter->dst_port = dst_port;
229
230 filter->flow_id = flow_id;
231
232 filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
233
234 list_add_tail(&filter->next, &priv->filters);
235 hlist_add_head(&filter->filter_chain,
236 filter_hash_bucket(priv, src_ip, dst_ip, src_port,
237 dst_port));
238
239 return filter;
240 }
241
242 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
243 {
244 struct mlx4_en_priv *priv = filter->priv;
245 int rc;
246
247 list_del(&filter->next);
248
249 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
250 if (rc && rc != -ENOENT)
251 en_err(priv, "Error detaching flow. rc = %d\n", rc);
252
253 kfree(filter);
254 }
255
256 static inline struct mlx4_en_filter *
257 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
258 u8 ip_proto, __be16 src_port, __be16 dst_port)
259 {
260 struct mlx4_en_filter *filter;
261 struct mlx4_en_filter *ret = NULL;
262
263 hlist_for_each_entry(filter,
264 filter_hash_bucket(priv, src_ip, dst_ip,
265 src_port, dst_port),
266 filter_chain) {
267 if (filter->src_ip == src_ip &&
268 filter->dst_ip == dst_ip &&
269 filter->ip_proto == ip_proto &&
270 filter->src_port == src_port &&
271 filter->dst_port == dst_port) {
272 ret = filter;
273 break;
274 }
275 }
276
277 return ret;
278 }
279
280 static int
281 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
282 u16 rxq_index, u32 flow_id)
283 {
284 struct mlx4_en_priv *priv = netdev_priv(net_dev);
285 struct mlx4_en_filter *filter;
286 const struct iphdr *ip;
287 const __be16 *ports;
288 u8 ip_proto;
289 __be32 src_ip;
290 __be32 dst_ip;
291 __be16 src_port;
292 __be16 dst_port;
293 int nhoff = skb_network_offset(skb);
294 int ret = 0;
295
296 if (skb->protocol != htons(ETH_P_IP))
297 return -EPROTONOSUPPORT;
298
299 ip = (const struct iphdr *)(skb->data + nhoff);
300 if (ip_is_fragment(ip))
301 return -EPROTONOSUPPORT;
302
303 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
304 return -EPROTONOSUPPORT;
305 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
306
307 ip_proto = ip->protocol;
308 src_ip = ip->saddr;
309 dst_ip = ip->daddr;
310 src_port = ports[0];
311 dst_port = ports[1];
312
313 spin_lock_bh(&priv->filters_lock);
314 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
315 src_port, dst_port);
316 if (filter) {
317 if (filter->rxq_index == rxq_index)
318 goto out;
319
320 filter->rxq_index = rxq_index;
321 } else {
322 filter = mlx4_en_filter_alloc(priv, rxq_index,
323 src_ip, dst_ip, ip_proto,
324 src_port, dst_port, flow_id);
325 if (!filter) {
326 ret = -ENOMEM;
327 goto err;
328 }
329 }
330
331 queue_work(priv->mdev->workqueue, &filter->work);
332
333 out:
334 ret = filter->id;
335 err:
336 spin_unlock_bh(&priv->filters_lock);
337
338 return ret;
339 }
340
341 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
342 {
343 struct mlx4_en_filter *filter, *tmp;
344 LIST_HEAD(del_list);
345
346 spin_lock_bh(&priv->filters_lock);
347 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
348 list_move(&filter->next, &del_list);
349 hlist_del(&filter->filter_chain);
350 }
351 spin_unlock_bh(&priv->filters_lock);
352
353 list_for_each_entry_safe(filter, tmp, &del_list, next) {
354 cancel_work_sync(&filter->work);
355 mlx4_en_filter_free(filter);
356 }
357 }
358
359 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
360 {
361 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
362 LIST_HEAD(del_list);
363 int i = 0;
364
365 spin_lock_bh(&priv->filters_lock);
366 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
367 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
368 break;
369
370 if (filter->activated &&
371 !work_pending(&filter->work) &&
372 rps_may_expire_flow(priv->dev,
373 filter->rxq_index, filter->flow_id,
374 filter->id)) {
375 list_move(&filter->next, &del_list);
376 hlist_del(&filter->filter_chain);
377 } else
378 last_filter = filter;
379
380 i++;
381 }
382
383 if (last_filter && (&last_filter->next != priv->filters.next))
384 list_move(&priv->filters, &last_filter->next);
385
386 spin_unlock_bh(&priv->filters_lock);
387
388 list_for_each_entry_safe(filter, tmp, &del_list, next)
389 mlx4_en_filter_free(filter);
390 }
391 #endif
392
393 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
394 __be16 proto, u16 vid)
395 {
396 struct mlx4_en_priv *priv = netdev_priv(dev);
397 struct mlx4_en_dev *mdev = priv->mdev;
398 int err;
399 int idx;
400
401 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
402
403 set_bit(vid, priv->active_vlans);
404
405 /* Add VID to port VLAN filter */
406 mutex_lock(&mdev->state_lock);
407 if (mdev->device_up && priv->port_up) {
408 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
409 if (err) {
410 en_err(priv, "Failed configuring VLAN filter\n");
411 goto out;
412 }
413 }
414 err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
415 if (err)
416 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
417
418 out:
419 mutex_unlock(&mdev->state_lock);
420 return err;
421 }
422
423 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
424 __be16 proto, u16 vid)
425 {
426 struct mlx4_en_priv *priv = netdev_priv(dev);
427 struct mlx4_en_dev *mdev = priv->mdev;
428 int err = 0;
429
430 en_dbg(HW, priv, "Killing VID:%d\n", vid);
431
432 clear_bit(vid, priv->active_vlans);
433
434 /* Remove VID from port VLAN filter */
435 mutex_lock(&mdev->state_lock);
436 mlx4_unregister_vlan(mdev->dev, priv->port, vid);
437
438 if (mdev->device_up && priv->port_up) {
439 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
440 if (err)
441 en_err(priv, "Failed configuring VLAN filter\n");
442 }
443 mutex_unlock(&mdev->state_lock);
444
445 return err;
446 }
447
448 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
449 {
450 int i;
451 for (i = ETH_ALEN - 1; i >= 0; --i) {
452 dst_mac[i] = src_mac & 0xff;
453 src_mac >>= 8;
454 }
455 memset(&dst_mac[ETH_ALEN], 0, 2);
456 }
457
458
459 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
460 int qpn, u64 *reg_id)
461 {
462 int err;
463
464 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
465 priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
466 return 0; /* do nothing */
467
468 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
469 MLX4_DOMAIN_NIC, reg_id);
470 if (err) {
471 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
472 return err;
473 }
474 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
475 return 0;
476 }
477
478
479 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
480 unsigned char *mac, int *qpn, u64 *reg_id)
481 {
482 struct mlx4_en_dev *mdev = priv->mdev;
483 struct mlx4_dev *dev = mdev->dev;
484 int err;
485
486 switch (dev->caps.steering_mode) {
487 case MLX4_STEERING_MODE_B0: {
488 struct mlx4_qp qp;
489 u8 gid[16] = {0};
490
491 qp.qpn = *qpn;
492 memcpy(&gid[10], mac, ETH_ALEN);
493 gid[5] = priv->port;
494
495 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
496 break;
497 }
498 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
499 struct mlx4_spec_list spec_eth = { {NULL} };
500 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
501
502 struct mlx4_net_trans_rule rule = {
503 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
504 .exclusive = 0,
505 .allow_loopback = 1,
506 .promisc_mode = MLX4_FS_REGULAR,
507 .priority = MLX4_DOMAIN_NIC,
508 };
509
510 rule.port = priv->port;
511 rule.qpn = *qpn;
512 INIT_LIST_HEAD(&rule.list);
513
514 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
515 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
516 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
517 list_add_tail(&spec_eth.list, &rule.list);
518
519 err = mlx4_flow_attach(dev, &rule, reg_id);
520 break;
521 }
522 default:
523 return -EINVAL;
524 }
525 if (err)
526 en_warn(priv, "Failed Attaching Unicast\n");
527
528 return err;
529 }
530
531 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
532 unsigned char *mac, int qpn, u64 reg_id)
533 {
534 struct mlx4_en_dev *mdev = priv->mdev;
535 struct mlx4_dev *dev = mdev->dev;
536
537 switch (dev->caps.steering_mode) {
538 case MLX4_STEERING_MODE_B0: {
539 struct mlx4_qp qp;
540 u8 gid[16] = {0};
541
542 qp.qpn = qpn;
543 memcpy(&gid[10], mac, ETH_ALEN);
544 gid[5] = priv->port;
545
546 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
547 break;
548 }
549 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
550 mlx4_flow_detach(dev, reg_id);
551 break;
552 }
553 default:
554 en_err(priv, "Invalid steering mode.\n");
555 }
556 }
557
558 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
559 {
560 struct mlx4_en_dev *mdev = priv->mdev;
561 struct mlx4_dev *dev = mdev->dev;
562 int index = 0;
563 int err = 0;
564 int *qpn = &priv->base_qpn;
565 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
566
567 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
568 priv->dev->dev_addr);
569 index = mlx4_register_mac(dev, priv->port, mac);
570 if (index < 0) {
571 err = index;
572 en_err(priv, "Failed adding MAC: %pM\n",
573 priv->dev->dev_addr);
574 return err;
575 }
576
577 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
578 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
579 *qpn = base_qpn + index;
580 return 0;
581 }
582
583 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
584 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
585 if (err) {
586 en_err(priv, "Failed to reserve qp for mac registration\n");
587 mlx4_unregister_mac(dev, priv->port, mac);
588 return err;
589 }
590
591 return 0;
592 }
593
594 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
595 {
596 struct mlx4_en_dev *mdev = priv->mdev;
597 struct mlx4_dev *dev = mdev->dev;
598 int qpn = priv->base_qpn;
599
600 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
601 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
602 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
603 priv->dev->dev_addr);
604 mlx4_unregister_mac(dev, priv->port, mac);
605 } else {
606 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
607 priv->port, qpn);
608 mlx4_qp_release_range(dev, qpn, 1);
609 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
610 }
611 }
612
613 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
614 unsigned char *new_mac, unsigned char *prev_mac)
615 {
616 struct mlx4_en_dev *mdev = priv->mdev;
617 struct mlx4_dev *dev = mdev->dev;
618 int err = 0;
619 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
620
621 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
622 struct hlist_head *bucket;
623 unsigned int mac_hash;
624 struct mlx4_mac_entry *entry;
625 struct hlist_node *tmp;
626 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
627
628 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
629 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
630 if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
631 mlx4_en_uc_steer_release(priv, entry->mac,
632 qpn, entry->reg_id);
633 mlx4_unregister_mac(dev, priv->port,
634 prev_mac_u64);
635 hlist_del_rcu(&entry->hlist);
636 synchronize_rcu();
637 memcpy(entry->mac, new_mac, ETH_ALEN);
638 entry->reg_id = 0;
639 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
640 hlist_add_head_rcu(&entry->hlist,
641 &priv->mac_hash[mac_hash]);
642 mlx4_register_mac(dev, priv->port, new_mac_u64);
643 err = mlx4_en_uc_steer_add(priv, new_mac,
644 &qpn,
645 &entry->reg_id);
646 if (err)
647 return err;
648 if (priv->tunnel_reg_id) {
649 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
650 priv->tunnel_reg_id = 0;
651 }
652 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
653 &priv->tunnel_reg_id);
654 return err;
655 }
656 }
657 return -EINVAL;
658 }
659
660 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
661 }
662
663 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
664 unsigned char new_mac[ETH_ALEN + 2])
665 {
666 int err = 0;
667
668 if (priv->port_up) {
669 /* Remove old MAC and insert the new one */
670 err = mlx4_en_replace_mac(priv, priv->base_qpn,
671 new_mac, priv->current_mac);
672 if (err)
673 en_err(priv, "Failed changing HW MAC address\n");
674 } else
675 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
676
677 if (!err)
678 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
679
680 return err;
681 }
682
683 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
684 {
685 struct mlx4_en_priv *priv = netdev_priv(dev);
686 struct mlx4_en_dev *mdev = priv->mdev;
687 struct sockaddr *saddr = addr;
688 unsigned char new_mac[ETH_ALEN + 2];
689 int err;
690
691 if (!is_valid_ether_addr(saddr->sa_data))
692 return -EADDRNOTAVAIL;
693
694 mutex_lock(&mdev->state_lock);
695 memcpy(new_mac, saddr->sa_data, ETH_ALEN);
696 err = mlx4_en_do_set_mac(priv, new_mac);
697 if (!err)
698 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
699 mutex_unlock(&mdev->state_lock);
700
701 return err;
702 }
703
704 static void mlx4_en_clear_list(struct net_device *dev)
705 {
706 struct mlx4_en_priv *priv = netdev_priv(dev);
707 struct mlx4_en_mc_list *tmp, *mc_to_del;
708
709 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
710 list_del(&mc_to_del->list);
711 kfree(mc_to_del);
712 }
713 }
714
715 static void mlx4_en_cache_mclist(struct net_device *dev)
716 {
717 struct mlx4_en_priv *priv = netdev_priv(dev);
718 struct netdev_hw_addr *ha;
719 struct mlx4_en_mc_list *tmp;
720
721 mlx4_en_clear_list(dev);
722 netdev_for_each_mc_addr(ha, dev) {
723 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
724 if (!tmp) {
725 mlx4_en_clear_list(dev);
726 return;
727 }
728 memcpy(tmp->addr, ha->addr, ETH_ALEN);
729 list_add_tail(&tmp->list, &priv->mc_list);
730 }
731 }
732
733 static void update_mclist_flags(struct mlx4_en_priv *priv,
734 struct list_head *dst,
735 struct list_head *src)
736 {
737 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
738 bool found;
739
740 /* Find all the entries that should be removed from dst,
741 * These are the entries that are not found in src
742 */
743 list_for_each_entry(dst_tmp, dst, list) {
744 found = false;
745 list_for_each_entry(src_tmp, src, list) {
746 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
747 found = true;
748 break;
749 }
750 }
751 if (!found)
752 dst_tmp->action = MCLIST_REM;
753 }
754
755 /* Add entries that exist in src but not in dst
756 * mark them as need to add
757 */
758 list_for_each_entry(src_tmp, src, list) {
759 found = false;
760 list_for_each_entry(dst_tmp, dst, list) {
761 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
762 dst_tmp->action = MCLIST_NONE;
763 found = true;
764 break;
765 }
766 }
767 if (!found) {
768 new_mc = kmemdup(src_tmp,
769 sizeof(struct mlx4_en_mc_list),
770 GFP_KERNEL);
771 if (!new_mc)
772 return;
773
774 new_mc->action = MCLIST_ADD;
775 list_add_tail(&new_mc->list, dst);
776 }
777 }
778 }
779
780 static void mlx4_en_set_rx_mode(struct net_device *dev)
781 {
782 struct mlx4_en_priv *priv = netdev_priv(dev);
783
784 if (!priv->port_up)
785 return;
786
787 queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
788 }
789
790 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
791 struct mlx4_en_dev *mdev)
792 {
793 int err = 0;
794
795 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
796 if (netif_msg_rx_status(priv))
797 en_warn(priv, "Entering promiscuous mode\n");
798 priv->flags |= MLX4_EN_FLAG_PROMISC;
799
800 /* Enable promiscouos mode */
801 switch (mdev->dev->caps.steering_mode) {
802 case MLX4_STEERING_MODE_DEVICE_MANAGED:
803 err = mlx4_flow_steer_promisc_add(mdev->dev,
804 priv->port,
805 priv->base_qpn,
806 MLX4_FS_ALL_DEFAULT);
807 if (err)
808 en_err(priv, "Failed enabling promiscuous mode\n");
809 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
810 break;
811
812 case MLX4_STEERING_MODE_B0:
813 err = mlx4_unicast_promisc_add(mdev->dev,
814 priv->base_qpn,
815 priv->port);
816 if (err)
817 en_err(priv, "Failed enabling unicast promiscuous mode\n");
818
819 /* Add the default qp number as multicast
820 * promisc
821 */
822 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
823 err = mlx4_multicast_promisc_add(mdev->dev,
824 priv->base_qpn,
825 priv->port);
826 if (err)
827 en_err(priv, "Failed enabling multicast promiscuous mode\n");
828 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
829 }
830 break;
831
832 case MLX4_STEERING_MODE_A0:
833 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
834 priv->port,
835 priv->base_qpn,
836 1);
837 if (err)
838 en_err(priv, "Failed enabling promiscuous mode\n");
839 break;
840 }
841
842 /* Disable port multicast filter (unconditionally) */
843 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
844 0, MLX4_MCAST_DISABLE);
845 if (err)
846 en_err(priv, "Failed disabling multicast filter\n");
847 }
848 }
849
850 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
851 struct mlx4_en_dev *mdev)
852 {
853 int err = 0;
854
855 if (netif_msg_rx_status(priv))
856 en_warn(priv, "Leaving promiscuous mode\n");
857 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
858
859 /* Disable promiscouos mode */
860 switch (mdev->dev->caps.steering_mode) {
861 case MLX4_STEERING_MODE_DEVICE_MANAGED:
862 err = mlx4_flow_steer_promisc_remove(mdev->dev,
863 priv->port,
864 MLX4_FS_ALL_DEFAULT);
865 if (err)
866 en_err(priv, "Failed disabling promiscuous mode\n");
867 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
868 break;
869
870 case MLX4_STEERING_MODE_B0:
871 err = mlx4_unicast_promisc_remove(mdev->dev,
872 priv->base_qpn,
873 priv->port);
874 if (err)
875 en_err(priv, "Failed disabling unicast promiscuous mode\n");
876 /* Disable Multicast promisc */
877 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
878 err = mlx4_multicast_promisc_remove(mdev->dev,
879 priv->base_qpn,
880 priv->port);
881 if (err)
882 en_err(priv, "Failed disabling multicast promiscuous mode\n");
883 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
884 }
885 break;
886
887 case MLX4_STEERING_MODE_A0:
888 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
889 priv->port,
890 priv->base_qpn, 0);
891 if (err)
892 en_err(priv, "Failed disabling promiscuous mode\n");
893 break;
894 }
895 }
896
897 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
898 struct net_device *dev,
899 struct mlx4_en_dev *mdev)
900 {
901 struct mlx4_en_mc_list *mclist, *tmp;
902 u64 mcast_addr = 0;
903 u8 mc_list[16] = {0};
904 int err = 0;
905
906 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
907 if (dev->flags & IFF_ALLMULTI) {
908 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
909 0, MLX4_MCAST_DISABLE);
910 if (err)
911 en_err(priv, "Failed disabling multicast filter\n");
912
913 /* Add the default qp number as multicast promisc */
914 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
915 switch (mdev->dev->caps.steering_mode) {
916 case MLX4_STEERING_MODE_DEVICE_MANAGED:
917 err = mlx4_flow_steer_promisc_add(mdev->dev,
918 priv->port,
919 priv->base_qpn,
920 MLX4_FS_MC_DEFAULT);
921 break;
922
923 case MLX4_STEERING_MODE_B0:
924 err = mlx4_multicast_promisc_add(mdev->dev,
925 priv->base_qpn,
926 priv->port);
927 break;
928
929 case MLX4_STEERING_MODE_A0:
930 break;
931 }
932 if (err)
933 en_err(priv, "Failed entering multicast promisc mode\n");
934 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
935 }
936 } else {
937 /* Disable Multicast promisc */
938 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
939 switch (mdev->dev->caps.steering_mode) {
940 case MLX4_STEERING_MODE_DEVICE_MANAGED:
941 err = mlx4_flow_steer_promisc_remove(mdev->dev,
942 priv->port,
943 MLX4_FS_MC_DEFAULT);
944 break;
945
946 case MLX4_STEERING_MODE_B0:
947 err = mlx4_multicast_promisc_remove(mdev->dev,
948 priv->base_qpn,
949 priv->port);
950 break;
951
952 case MLX4_STEERING_MODE_A0:
953 break;
954 }
955 if (err)
956 en_err(priv, "Failed disabling multicast promiscuous mode\n");
957 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
958 }
959
960 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
961 0, MLX4_MCAST_DISABLE);
962 if (err)
963 en_err(priv, "Failed disabling multicast filter\n");
964
965 /* Flush mcast filter and init it with broadcast address */
966 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
967 1, MLX4_MCAST_CONFIG);
968
969 /* Update multicast list - we cache all addresses so they won't
970 * change while HW is updated holding the command semaphor */
971 netif_addr_lock_bh(dev);
972 mlx4_en_cache_mclist(dev);
973 netif_addr_unlock_bh(dev);
974 list_for_each_entry(mclist, &priv->mc_list, list) {
975 mcast_addr = mlx4_mac_to_u64(mclist->addr);
976 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
977 mcast_addr, 0, MLX4_MCAST_CONFIG);
978 }
979 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
980 0, MLX4_MCAST_ENABLE);
981 if (err)
982 en_err(priv, "Failed enabling multicast filter\n");
983
984 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
985 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
986 if (mclist->action == MCLIST_REM) {
987 /* detach this address and delete from list */
988 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
989 mc_list[5] = priv->port;
990 err = mlx4_multicast_detach(mdev->dev,
991 &priv->rss_map.indir_qp,
992 mc_list,
993 MLX4_PROT_ETH,
994 mclist->reg_id);
995 if (err)
996 en_err(priv, "Fail to detach multicast address\n");
997
998 if (mclist->tunnel_reg_id) {
999 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1000 if (err)
1001 en_err(priv, "Failed to detach multicast address\n");
1002 }
1003
1004 /* remove from list */
1005 list_del(&mclist->list);
1006 kfree(mclist);
1007 } else if (mclist->action == MCLIST_ADD) {
1008 /* attach the address */
1009 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1010 /* needed for B0 steering support */
1011 mc_list[5] = priv->port;
1012 err = mlx4_multicast_attach(mdev->dev,
1013 &priv->rss_map.indir_qp,
1014 mc_list,
1015 priv->port, 0,
1016 MLX4_PROT_ETH,
1017 &mclist->reg_id);
1018 if (err)
1019 en_err(priv, "Fail to attach multicast address\n");
1020
1021 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1022 &mclist->tunnel_reg_id);
1023 if (err)
1024 en_err(priv, "Failed to attach multicast address\n");
1025 }
1026 }
1027 }
1028 }
1029
1030 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1031 struct net_device *dev,
1032 struct mlx4_en_dev *mdev)
1033 {
1034 struct netdev_hw_addr *ha;
1035 struct mlx4_mac_entry *entry;
1036 struct hlist_node *tmp;
1037 bool found;
1038 u64 mac;
1039 int err = 0;
1040 struct hlist_head *bucket;
1041 unsigned int i;
1042 int removed = 0;
1043 u32 prev_flags;
1044
1045 /* Note that we do not need to protect our mac_hash traversal with rcu,
1046 * since all modification code is protected by mdev->state_lock
1047 */
1048
1049 /* find what to remove */
1050 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1051 bucket = &priv->mac_hash[i];
1052 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1053 found = false;
1054 netdev_for_each_uc_addr(ha, dev) {
1055 if (ether_addr_equal_64bits(entry->mac,
1056 ha->addr)) {
1057 found = true;
1058 break;
1059 }
1060 }
1061
1062 /* MAC address of the port is not in uc list */
1063 if (ether_addr_equal_64bits(entry->mac,
1064 priv->current_mac))
1065 found = true;
1066
1067 if (!found) {
1068 mac = mlx4_mac_to_u64(entry->mac);
1069 mlx4_en_uc_steer_release(priv, entry->mac,
1070 priv->base_qpn,
1071 entry->reg_id);
1072 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1073
1074 hlist_del_rcu(&entry->hlist);
1075 kfree_rcu(entry, rcu);
1076 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1077 entry->mac, priv->port);
1078 ++removed;
1079 }
1080 }
1081 }
1082
1083 /* if we didn't remove anything, there is no use in trying to add
1084 * again once we are in a forced promisc mode state
1085 */
1086 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1087 return;
1088
1089 prev_flags = priv->flags;
1090 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1091
1092 /* find what to add */
1093 netdev_for_each_uc_addr(ha, dev) {
1094 found = false;
1095 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1096 hlist_for_each_entry(entry, bucket, hlist) {
1097 if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1098 found = true;
1099 break;
1100 }
1101 }
1102
1103 if (!found) {
1104 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1105 if (!entry) {
1106 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1107 ha->addr, priv->port);
1108 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1109 break;
1110 }
1111 mac = mlx4_mac_to_u64(ha->addr);
1112 memcpy(entry->mac, ha->addr, ETH_ALEN);
1113 err = mlx4_register_mac(mdev->dev, priv->port, mac);
1114 if (err < 0) {
1115 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1116 ha->addr, priv->port, err);
1117 kfree(entry);
1118 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1119 break;
1120 }
1121 err = mlx4_en_uc_steer_add(priv, ha->addr,
1122 &priv->base_qpn,
1123 &entry->reg_id);
1124 if (err) {
1125 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1126 ha->addr, priv->port, err);
1127 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1128 kfree(entry);
1129 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1130 break;
1131 } else {
1132 unsigned int mac_hash;
1133 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1134 ha->addr, priv->port);
1135 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1136 bucket = &priv->mac_hash[mac_hash];
1137 hlist_add_head_rcu(&entry->hlist, bucket);
1138 }
1139 }
1140 }
1141
1142 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1143 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1144 priv->port);
1145 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1146 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1147 priv->port);
1148 }
1149 }
1150
1151 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1152 {
1153 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1154 rx_mode_task);
1155 struct mlx4_en_dev *mdev = priv->mdev;
1156 struct net_device *dev = priv->dev;
1157
1158 mutex_lock(&mdev->state_lock);
1159 if (!mdev->device_up) {
1160 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1161 goto out;
1162 }
1163 if (!priv->port_up) {
1164 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1165 goto out;
1166 }
1167
1168 if (!netif_carrier_ok(dev)) {
1169 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1170 if (priv->port_state.link_state) {
1171 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1172 netif_carrier_on(dev);
1173 en_dbg(LINK, priv, "Link Up\n");
1174 }
1175 }
1176 }
1177
1178 if (dev->priv_flags & IFF_UNICAST_FLT)
1179 mlx4_en_do_uc_filter(priv, dev, mdev);
1180
1181 /* Promsicuous mode: disable all filters */
1182 if ((dev->flags & IFF_PROMISC) ||
1183 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1184 mlx4_en_set_promisc_mode(priv, mdev);
1185 goto out;
1186 }
1187
1188 /* Not in promiscuous mode */
1189 if (priv->flags & MLX4_EN_FLAG_PROMISC)
1190 mlx4_en_clear_promisc_mode(priv, mdev);
1191
1192 mlx4_en_do_multicast(priv, dev, mdev);
1193 out:
1194 mutex_unlock(&mdev->state_lock);
1195 }
1196
1197 #ifdef CONFIG_NET_POLL_CONTROLLER
1198 static void mlx4_en_netpoll(struct net_device *dev)
1199 {
1200 struct mlx4_en_priv *priv = netdev_priv(dev);
1201 struct mlx4_en_cq *cq;
1202 int i;
1203
1204 for (i = 0; i < priv->rx_ring_num; i++) {
1205 cq = priv->rx_cq[i];
1206 napi_schedule(&cq->napi);
1207 }
1208 }
1209 #endif
1210
1211 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1212 {
1213 u64 reg_id;
1214 int err = 0;
1215 int *qpn = &priv->base_qpn;
1216 struct mlx4_mac_entry *entry;
1217
1218 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1219 if (err)
1220 return err;
1221
1222 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1223 &priv->tunnel_reg_id);
1224 if (err)
1225 goto tunnel_err;
1226
1227 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1228 if (!entry) {
1229 err = -ENOMEM;
1230 goto alloc_err;
1231 }
1232
1233 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1234 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1235 entry->reg_id = reg_id;
1236 hlist_add_head_rcu(&entry->hlist,
1237 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1238
1239 return 0;
1240
1241 alloc_err:
1242 if (priv->tunnel_reg_id)
1243 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1244
1245 tunnel_err:
1246 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1247 return err;
1248 }
1249
1250 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1251 {
1252 u64 mac;
1253 unsigned int i;
1254 int qpn = priv->base_qpn;
1255 struct hlist_head *bucket;
1256 struct hlist_node *tmp;
1257 struct mlx4_mac_entry *entry;
1258
1259 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1260 bucket = &priv->mac_hash[i];
1261 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1262 mac = mlx4_mac_to_u64(entry->mac);
1263 en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1264 entry->mac);
1265 mlx4_en_uc_steer_release(priv, entry->mac,
1266 qpn, entry->reg_id);
1267
1268 mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1269 hlist_del_rcu(&entry->hlist);
1270 kfree_rcu(entry, rcu);
1271 }
1272 }
1273
1274 if (priv->tunnel_reg_id) {
1275 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1276 priv->tunnel_reg_id = 0;
1277 }
1278 }
1279
1280 static void mlx4_en_tx_timeout(struct net_device *dev)
1281 {
1282 struct mlx4_en_priv *priv = netdev_priv(dev);
1283 struct mlx4_en_dev *mdev = priv->mdev;
1284 int i;
1285
1286 if (netif_msg_timer(priv))
1287 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1288
1289 for (i = 0; i < priv->tx_ring_num; i++) {
1290 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1291 continue;
1292 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1293 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1294 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1295 }
1296
1297 priv->port_stats.tx_timeout++;
1298 en_dbg(DRV, priv, "Scheduling watchdog\n");
1299 queue_work(mdev->workqueue, &priv->watchdog_task);
1300 }
1301
1302
1303 static struct rtnl_link_stats64 *
1304 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1305 {
1306 struct mlx4_en_priv *priv = netdev_priv(dev);
1307
1308 spin_lock_bh(&priv->stats_lock);
1309 netdev_stats_to_stats64(stats, &dev->stats);
1310 spin_unlock_bh(&priv->stats_lock);
1311
1312 return stats;
1313 }
1314
1315 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1316 {
1317 struct mlx4_en_cq *cq;
1318 int i;
1319
1320 /* If we haven't received a specific coalescing setting
1321 * (module param), we set the moderation parameters as follows:
1322 * - moder_cnt is set to the number of mtu sized packets to
1323 * satisfy our coalescing target.
1324 * - moder_time is set to a fixed value.
1325 */
1326 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1327 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1328 priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1329 priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1330 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1331 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1332
1333 /* Setup cq moderation params */
1334 for (i = 0; i < priv->rx_ring_num; i++) {
1335 cq = priv->rx_cq[i];
1336 cq->moder_cnt = priv->rx_frames;
1337 cq->moder_time = priv->rx_usecs;
1338 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1339 priv->last_moder_packets[i] = 0;
1340 priv->last_moder_bytes[i] = 0;
1341 }
1342
1343 for (i = 0; i < priv->tx_ring_num; i++) {
1344 cq = priv->tx_cq[i];
1345 cq->moder_cnt = priv->tx_frames;
1346 cq->moder_time = priv->tx_usecs;
1347 }
1348
1349 /* Reset auto-moderation params */
1350 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1351 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1352 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1353 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1354 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1355 priv->adaptive_rx_coal = 1;
1356 priv->last_moder_jiffies = 0;
1357 priv->last_moder_tx_packets = 0;
1358 }
1359
1360 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1361 {
1362 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1363 struct mlx4_en_cq *cq;
1364 unsigned long packets;
1365 unsigned long rate;
1366 unsigned long avg_pkt_size;
1367 unsigned long rx_packets;
1368 unsigned long rx_bytes;
1369 unsigned long rx_pkt_diff;
1370 int moder_time;
1371 int ring, err;
1372
1373 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1374 return;
1375
1376 for (ring = 0; ring < priv->rx_ring_num; ring++) {
1377 spin_lock_bh(&priv->stats_lock);
1378 rx_packets = priv->rx_ring[ring]->packets;
1379 rx_bytes = priv->rx_ring[ring]->bytes;
1380 spin_unlock_bh(&priv->stats_lock);
1381
1382 rx_pkt_diff = ((unsigned long) (rx_packets -
1383 priv->last_moder_packets[ring]));
1384 packets = rx_pkt_diff;
1385 rate = packets * HZ / period;
1386 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1387 priv->last_moder_bytes[ring])) / packets : 0;
1388
1389 /* Apply auto-moderation only when packet rate
1390 * exceeds a rate that it matters */
1391 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1392 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1393 if (rate < priv->pkt_rate_low)
1394 moder_time = priv->rx_usecs_low;
1395 else if (rate > priv->pkt_rate_high)
1396 moder_time = priv->rx_usecs_high;
1397 else
1398 moder_time = (rate - priv->pkt_rate_low) *
1399 (priv->rx_usecs_high - priv->rx_usecs_low) /
1400 (priv->pkt_rate_high - priv->pkt_rate_low) +
1401 priv->rx_usecs_low;
1402 } else {
1403 moder_time = priv->rx_usecs_low;
1404 }
1405
1406 if (moder_time != priv->last_moder_time[ring]) {
1407 priv->last_moder_time[ring] = moder_time;
1408 cq = priv->rx_cq[ring];
1409 cq->moder_time = moder_time;
1410 cq->moder_cnt = priv->rx_frames;
1411 err = mlx4_en_set_cq_moder(priv, cq);
1412 if (err)
1413 en_err(priv, "Failed modifying moderation for cq:%d\n",
1414 ring);
1415 }
1416 priv->last_moder_packets[ring] = rx_packets;
1417 priv->last_moder_bytes[ring] = rx_bytes;
1418 }
1419
1420 priv->last_moder_jiffies = jiffies;
1421 }
1422
1423 static void mlx4_en_do_get_stats(struct work_struct *work)
1424 {
1425 struct delayed_work *delay = to_delayed_work(work);
1426 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1427 stats_task);
1428 struct mlx4_en_dev *mdev = priv->mdev;
1429 int err;
1430
1431 mutex_lock(&mdev->state_lock);
1432 if (mdev->device_up) {
1433 if (priv->port_up) {
1434 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1435 if (err)
1436 en_dbg(HW, priv, "Could not update stats\n");
1437
1438 mlx4_en_auto_moderation(priv);
1439 }
1440
1441 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1442 }
1443 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1444 mlx4_en_do_set_mac(priv, priv->current_mac);
1445 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1446 }
1447 mutex_unlock(&mdev->state_lock);
1448 }
1449
1450 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1451 * periodically
1452 */
1453 static void mlx4_en_service_task(struct work_struct *work)
1454 {
1455 struct delayed_work *delay = to_delayed_work(work);
1456 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1457 service_task);
1458 struct mlx4_en_dev *mdev = priv->mdev;
1459
1460 mutex_lock(&mdev->state_lock);
1461 if (mdev->device_up) {
1462 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1463 mlx4_en_ptp_overflow_check(mdev);
1464
1465 mlx4_en_recover_from_oom(priv);
1466 queue_delayed_work(mdev->workqueue, &priv->service_task,
1467 SERVICE_TASK_DELAY);
1468 }
1469 mutex_unlock(&mdev->state_lock);
1470 }
1471
1472 static void mlx4_en_linkstate(struct work_struct *work)
1473 {
1474 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1475 linkstate_task);
1476 struct mlx4_en_dev *mdev = priv->mdev;
1477 int linkstate = priv->link_state;
1478
1479 mutex_lock(&mdev->state_lock);
1480 /* If observable port state changed set carrier state and
1481 * report to system log */
1482 if (priv->last_link_state != linkstate) {
1483 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1484 en_info(priv, "Link Down\n");
1485 netif_carrier_off(priv->dev);
1486 } else {
1487 en_info(priv, "Link Up\n");
1488 netif_carrier_on(priv->dev);
1489 }
1490 }
1491 priv->last_link_state = linkstate;
1492 mutex_unlock(&mdev->state_lock);
1493 }
1494
1495 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1496 {
1497 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1498 int numa_node = priv->mdev->dev->numa_node;
1499
1500 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1501 return -ENOMEM;
1502
1503 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1504 ring->affinity_mask);
1505 return 0;
1506 }
1507
1508 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1509 {
1510 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1511 }
1512
1513 int mlx4_en_start_port(struct net_device *dev)
1514 {
1515 struct mlx4_en_priv *priv = netdev_priv(dev);
1516 struct mlx4_en_dev *mdev = priv->mdev;
1517 struct mlx4_en_cq *cq;
1518 struct mlx4_en_tx_ring *tx_ring;
1519 int rx_index = 0;
1520 int tx_index = 0;
1521 int err = 0;
1522 int i;
1523 int j;
1524 u8 mc_list[16] = {0};
1525
1526 if (priv->port_up) {
1527 en_dbg(DRV, priv, "start port called while port already up\n");
1528 return 0;
1529 }
1530
1531 INIT_LIST_HEAD(&priv->mc_list);
1532 INIT_LIST_HEAD(&priv->curr_list);
1533 INIT_LIST_HEAD(&priv->ethtool_list);
1534 memset(&priv->ethtool_rules[0], 0,
1535 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1536
1537 /* Calculate Rx buf size */
1538 dev->mtu = min(dev->mtu, priv->max_mtu);
1539 mlx4_en_calc_rx_buf(dev);
1540 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1541
1542 /* Configure rx cq's and rings */
1543 err = mlx4_en_activate_rx_rings(priv);
1544 if (err) {
1545 en_err(priv, "Failed to activate RX rings\n");
1546 return err;
1547 }
1548 for (i = 0; i < priv->rx_ring_num; i++) {
1549 cq = priv->rx_cq[i];
1550
1551 err = mlx4_en_init_affinity_hint(priv, i);
1552 if (err) {
1553 en_err(priv, "Failed preparing IRQ affinity hint\n");
1554 goto cq_err;
1555 }
1556
1557 err = mlx4_en_activate_cq(priv, cq, i);
1558 if (err) {
1559 en_err(priv, "Failed activating Rx CQ\n");
1560 mlx4_en_free_affinity_hint(priv, i);
1561 goto cq_err;
1562 }
1563
1564 for (j = 0; j < cq->size; j++) {
1565 struct mlx4_cqe *cqe = NULL;
1566
1567 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1568 priv->cqe_factor;
1569 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1570 }
1571
1572 err = mlx4_en_set_cq_moder(priv, cq);
1573 if (err) {
1574 en_err(priv, "Failed setting cq moderation parameters\n");
1575 mlx4_en_deactivate_cq(priv, cq);
1576 mlx4_en_free_affinity_hint(priv, i);
1577 goto cq_err;
1578 }
1579 mlx4_en_arm_cq(priv, cq);
1580 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1581 ++rx_index;
1582 }
1583
1584 /* Set qp number */
1585 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1586 err = mlx4_en_get_qp(priv);
1587 if (err) {
1588 en_err(priv, "Failed getting eth qp\n");
1589 goto cq_err;
1590 }
1591 mdev->mac_removed[priv->port] = 0;
1592
1593 priv->counter_index =
1594 mlx4_get_default_counter_index(mdev->dev, priv->port);
1595
1596 err = mlx4_en_config_rss_steer(priv);
1597 if (err) {
1598 en_err(priv, "Failed configuring rss steering\n");
1599 goto mac_err;
1600 }
1601
1602 err = mlx4_en_create_drop_qp(priv);
1603 if (err)
1604 goto rss_err;
1605
1606 /* Configure tx cq's and rings */
1607 for (i = 0; i < priv->tx_ring_num; i++) {
1608 /* Configure cq */
1609 cq = priv->tx_cq[i];
1610 err = mlx4_en_activate_cq(priv, cq, i);
1611 if (err) {
1612 en_err(priv, "Failed allocating Tx CQ\n");
1613 goto tx_err;
1614 }
1615 err = mlx4_en_set_cq_moder(priv, cq);
1616 if (err) {
1617 en_err(priv, "Failed setting cq moderation parameters\n");
1618 mlx4_en_deactivate_cq(priv, cq);
1619 goto tx_err;
1620 }
1621 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1622 cq->buf->wqe_index = cpu_to_be16(0xffff);
1623
1624 /* Configure ring */
1625 tx_ring = priv->tx_ring[i];
1626 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1627 i / priv->num_tx_rings_p_up);
1628 if (err) {
1629 en_err(priv, "Failed allocating Tx ring\n");
1630 mlx4_en_deactivate_cq(priv, cq);
1631 goto tx_err;
1632 }
1633 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1634
1635 /* Arm CQ for TX completions */
1636 mlx4_en_arm_cq(priv, cq);
1637
1638 /* Set initial ownership of all Tx TXBBs to SW (1) */
1639 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1640 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1641 ++tx_index;
1642 }
1643
1644 /* Configure port */
1645 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1646 priv->rx_skb_size + ETH_FCS_LEN,
1647 priv->prof->tx_pause,
1648 priv->prof->tx_ppp,
1649 priv->prof->rx_pause,
1650 priv->prof->rx_ppp);
1651 if (err) {
1652 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1653 priv->port, err);
1654 goto tx_err;
1655 }
1656 /* Set default qp number */
1657 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1658 if (err) {
1659 en_err(priv, "Failed setting default qp numbers\n");
1660 goto tx_err;
1661 }
1662
1663 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1664 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1665 if (err) {
1666 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1667 err);
1668 goto tx_err;
1669 }
1670 }
1671
1672 /* Init port */
1673 en_dbg(HW, priv, "Initializing port\n");
1674 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1675 if (err) {
1676 en_err(priv, "Failed Initializing port\n");
1677 goto tx_err;
1678 }
1679
1680 /* Set Unicast and VXLAN steering rules */
1681 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1682 mlx4_en_set_rss_steer_rules(priv))
1683 mlx4_warn(mdev, "Failed setting steering rules\n");
1684
1685 /* Attach rx QP to bradcast address */
1686 eth_broadcast_addr(&mc_list[10]);
1687 mc_list[5] = priv->port; /* needed for B0 steering support */
1688 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1689 priv->port, 0, MLX4_PROT_ETH,
1690 &priv->broadcast_id))
1691 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1692
1693 /* Must redo promiscuous mode setup. */
1694 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1695
1696 /* Schedule multicast task to populate multicast list */
1697 queue_work(mdev->workqueue, &priv->rx_mode_task);
1698
1699 #ifdef CONFIG_MLX4_EN_VXLAN
1700 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1701 vxlan_get_rx_port(dev);
1702 #endif
1703 priv->port_up = true;
1704 netif_tx_start_all_queues(dev);
1705 netif_device_attach(dev);
1706
1707 return 0;
1708
1709 tx_err:
1710 while (tx_index--) {
1711 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1712 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1713 }
1714 mlx4_en_destroy_drop_qp(priv);
1715 rss_err:
1716 mlx4_en_release_rss_steer(priv);
1717 mac_err:
1718 mlx4_en_put_qp(priv);
1719 cq_err:
1720 while (rx_index--) {
1721 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1722 mlx4_en_free_affinity_hint(priv, rx_index);
1723 }
1724 for (i = 0; i < priv->rx_ring_num; i++)
1725 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1726
1727 return err; /* need to close devices */
1728 }
1729
1730
1731 void mlx4_en_stop_port(struct net_device *dev, int detach)
1732 {
1733 struct mlx4_en_priv *priv = netdev_priv(dev);
1734 struct mlx4_en_dev *mdev = priv->mdev;
1735 struct mlx4_en_mc_list *mclist, *tmp;
1736 struct ethtool_flow_id *flow, *tmp_flow;
1737 int i;
1738 u8 mc_list[16] = {0};
1739
1740 if (!priv->port_up) {
1741 en_dbg(DRV, priv, "stop port called while port already down\n");
1742 return;
1743 }
1744
1745 /* close port*/
1746 mlx4_CLOSE_PORT(mdev->dev, priv->port);
1747
1748 /* Synchronize with tx routine */
1749 netif_tx_lock_bh(dev);
1750 if (detach)
1751 netif_device_detach(dev);
1752 netif_tx_stop_all_queues(dev);
1753 netif_tx_unlock_bh(dev);
1754
1755 netif_tx_disable(dev);
1756
1757 /* Set port as not active */
1758 priv->port_up = false;
1759 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1760
1761 /* Promsicuous mode */
1762 if (mdev->dev->caps.steering_mode ==
1763 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1764 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1765 MLX4_EN_FLAG_MC_PROMISC);
1766 mlx4_flow_steer_promisc_remove(mdev->dev,
1767 priv->port,
1768 MLX4_FS_ALL_DEFAULT);
1769 mlx4_flow_steer_promisc_remove(mdev->dev,
1770 priv->port,
1771 MLX4_FS_MC_DEFAULT);
1772 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1773 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1774
1775 /* Disable promiscouos mode */
1776 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1777 priv->port);
1778
1779 /* Disable Multicast promisc */
1780 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1781 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1782 priv->port);
1783 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1784 }
1785 }
1786
1787 /* Detach All multicasts */
1788 eth_broadcast_addr(&mc_list[10]);
1789 mc_list[5] = priv->port; /* needed for B0 steering support */
1790 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1791 MLX4_PROT_ETH, priv->broadcast_id);
1792 list_for_each_entry(mclist, &priv->curr_list, list) {
1793 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1794 mc_list[5] = priv->port;
1795 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1796 mc_list, MLX4_PROT_ETH, mclist->reg_id);
1797 if (mclist->tunnel_reg_id)
1798 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1799 }
1800 mlx4_en_clear_list(dev);
1801 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1802 list_del(&mclist->list);
1803 kfree(mclist);
1804 }
1805
1806 /* Flush multicast filter */
1807 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1808
1809 /* Remove flow steering rules for the port*/
1810 if (mdev->dev->caps.steering_mode ==
1811 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1812 ASSERT_RTNL();
1813 list_for_each_entry_safe(flow, tmp_flow,
1814 &priv->ethtool_list, list) {
1815 mlx4_flow_detach(mdev->dev, flow->id);
1816 list_del(&flow->list);
1817 }
1818 }
1819
1820 mlx4_en_destroy_drop_qp(priv);
1821
1822 /* Free TX Rings */
1823 for (i = 0; i < priv->tx_ring_num; i++) {
1824 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1825 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1826 }
1827 msleep(10);
1828
1829 for (i = 0; i < priv->tx_ring_num; i++)
1830 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1831
1832 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1833 mlx4_en_delete_rss_steer_rules(priv);
1834
1835 /* Free RSS qps */
1836 mlx4_en_release_rss_steer(priv);
1837
1838 /* Unregister Mac address for the port */
1839 mlx4_en_put_qp(priv);
1840 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1841 mdev->mac_removed[priv->port] = 1;
1842
1843 /* Free RX Rings */
1844 for (i = 0; i < priv->rx_ring_num; i++) {
1845 struct mlx4_en_cq *cq = priv->rx_cq[i];
1846
1847 napi_synchronize(&cq->napi);
1848 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1849 mlx4_en_deactivate_cq(priv, cq);
1850
1851 mlx4_en_free_affinity_hint(priv, i);
1852 }
1853 }
1854
1855 static void mlx4_en_restart(struct work_struct *work)
1856 {
1857 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1858 watchdog_task);
1859 struct mlx4_en_dev *mdev = priv->mdev;
1860 struct net_device *dev = priv->dev;
1861
1862 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1863
1864 rtnl_lock();
1865 mutex_lock(&mdev->state_lock);
1866 if (priv->port_up) {
1867 mlx4_en_stop_port(dev, 1);
1868 if (mlx4_en_start_port(dev))
1869 en_err(priv, "Failed restarting port %d\n", priv->port);
1870 }
1871 mutex_unlock(&mdev->state_lock);
1872 rtnl_unlock();
1873 }
1874
1875 static void mlx4_en_clear_stats(struct net_device *dev)
1876 {
1877 struct mlx4_en_priv *priv = netdev_priv(dev);
1878 struct mlx4_en_dev *mdev = priv->mdev;
1879 int i;
1880
1881 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1882 en_dbg(HW, priv, "Failed dumping statistics\n");
1883
1884 memset(&priv->pstats, 0, sizeof(priv->pstats));
1885 memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1886 memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1887 memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
1888 memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
1889 memset(&priv->rx_priority_flowstats, 0,
1890 sizeof(priv->rx_priority_flowstats));
1891 memset(&priv->tx_priority_flowstats, 0,
1892 sizeof(priv->tx_priority_flowstats));
1893 memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
1894
1895 for (i = 0; i < priv->tx_ring_num; i++) {
1896 priv->tx_ring[i]->bytes = 0;
1897 priv->tx_ring[i]->packets = 0;
1898 priv->tx_ring[i]->tx_csum = 0;
1899 priv->tx_ring[i]->tx_dropped = 0;
1900 priv->tx_ring[i]->queue_stopped = 0;
1901 priv->tx_ring[i]->wake_queue = 0;
1902 priv->tx_ring[i]->tso_packets = 0;
1903 priv->tx_ring[i]->xmit_more = 0;
1904 }
1905 for (i = 0; i < priv->rx_ring_num; i++) {
1906 priv->rx_ring[i]->bytes = 0;
1907 priv->rx_ring[i]->packets = 0;
1908 priv->rx_ring[i]->csum_ok = 0;
1909 priv->rx_ring[i]->csum_none = 0;
1910 priv->rx_ring[i]->csum_complete = 0;
1911 }
1912 }
1913
1914 static int mlx4_en_open(struct net_device *dev)
1915 {
1916 struct mlx4_en_priv *priv = netdev_priv(dev);
1917 struct mlx4_en_dev *mdev = priv->mdev;
1918 int err = 0;
1919
1920 mutex_lock(&mdev->state_lock);
1921
1922 if (!mdev->device_up) {
1923 en_err(priv, "Cannot open - device down/disabled\n");
1924 err = -EBUSY;
1925 goto out;
1926 }
1927
1928 /* Reset HW statistics and SW counters */
1929 mlx4_en_clear_stats(dev);
1930
1931 err = mlx4_en_start_port(dev);
1932 if (err)
1933 en_err(priv, "Failed starting port:%d\n", priv->port);
1934
1935 out:
1936 mutex_unlock(&mdev->state_lock);
1937 return err;
1938 }
1939
1940
1941 static int mlx4_en_close(struct net_device *dev)
1942 {
1943 struct mlx4_en_priv *priv = netdev_priv(dev);
1944 struct mlx4_en_dev *mdev = priv->mdev;
1945
1946 en_dbg(IFDOWN, priv, "Close port called\n");
1947
1948 mutex_lock(&mdev->state_lock);
1949
1950 mlx4_en_stop_port(dev, 0);
1951 netif_carrier_off(dev);
1952
1953 mutex_unlock(&mdev->state_lock);
1954 return 0;
1955 }
1956
1957 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1958 {
1959 int i;
1960
1961 #ifdef CONFIG_RFS_ACCEL
1962 priv->dev->rx_cpu_rmap = NULL;
1963 #endif
1964
1965 for (i = 0; i < priv->tx_ring_num; i++) {
1966 if (priv->tx_ring && priv->tx_ring[i])
1967 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1968 if (priv->tx_cq && priv->tx_cq[i])
1969 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1970 }
1971
1972 for (i = 0; i < priv->rx_ring_num; i++) {
1973 if (priv->rx_ring[i])
1974 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1975 priv->prof->rx_ring_size, priv->stride);
1976 if (priv->rx_cq[i])
1977 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1978 }
1979
1980 }
1981
1982 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1983 {
1984 struct mlx4_en_port_profile *prof = priv->prof;
1985 int i;
1986 int node;
1987
1988 /* Create tx Rings */
1989 for (i = 0; i < priv->tx_ring_num; i++) {
1990 node = cpu_to_node(i % num_online_cpus());
1991 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1992 prof->tx_ring_size, i, TX, node))
1993 goto err;
1994
1995 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1996 prof->tx_ring_size, TXBB_SIZE,
1997 node, i))
1998 goto err;
1999 }
2000
2001 /* Create rx Rings */
2002 for (i = 0; i < priv->rx_ring_num; i++) {
2003 node = cpu_to_node(i % num_online_cpus());
2004 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2005 prof->rx_ring_size, i, RX, node))
2006 goto err;
2007
2008 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2009 prof->rx_ring_size, priv->stride,
2010 node))
2011 goto err;
2012 }
2013
2014 #ifdef CONFIG_RFS_ACCEL
2015 priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2016 #endif
2017
2018 return 0;
2019
2020 err:
2021 en_err(priv, "Failed to allocate NIC resources\n");
2022 for (i = 0; i < priv->rx_ring_num; i++) {
2023 if (priv->rx_ring[i])
2024 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2025 prof->rx_ring_size,
2026 priv->stride);
2027 if (priv->rx_cq[i])
2028 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2029 }
2030 for (i = 0; i < priv->tx_ring_num; i++) {
2031 if (priv->tx_ring[i])
2032 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2033 if (priv->tx_cq[i])
2034 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2035 }
2036 return -ENOMEM;
2037 }
2038
2039 static void mlx4_en_shutdown(struct net_device *dev)
2040 {
2041 rtnl_lock();
2042 netif_device_detach(dev);
2043 mlx4_en_close(dev);
2044 rtnl_unlock();
2045 }
2046
2047 void mlx4_en_destroy_netdev(struct net_device *dev)
2048 {
2049 struct mlx4_en_priv *priv = netdev_priv(dev);
2050 struct mlx4_en_dev *mdev = priv->mdev;
2051 bool shutdown = mdev->dev->persist->interface_state &
2052 MLX4_INTERFACE_STATE_SHUTDOWN;
2053
2054 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2055
2056 /* Unregister device - this will close the port if it was up */
2057 if (priv->registered) {
2058 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2059 priv->port));
2060 if (shutdown)
2061 mlx4_en_shutdown(dev);
2062 else
2063 unregister_netdev(dev);
2064 }
2065
2066 if (priv->allocated)
2067 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2068
2069 cancel_delayed_work(&priv->stats_task);
2070 cancel_delayed_work(&priv->service_task);
2071 /* flush any pending task for this netdev */
2072 flush_workqueue(mdev->workqueue);
2073
2074 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2075 mlx4_en_remove_timestamp(mdev);
2076
2077 /* Detach the netdev so tasks would not attempt to access it */
2078 mutex_lock(&mdev->state_lock);
2079 mdev->pndev[priv->port] = NULL;
2080 mdev->upper[priv->port] = NULL;
2081 mutex_unlock(&mdev->state_lock);
2082
2083 #ifdef CONFIG_RFS_ACCEL
2084 mlx4_en_cleanup_filters(priv);
2085 #endif
2086
2087 mlx4_en_free_resources(priv);
2088
2089 kfree(priv->tx_ring);
2090 kfree(priv->tx_cq);
2091
2092 if (!shutdown)
2093 free_netdev(dev);
2094 }
2095
2096 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2097 {
2098 struct mlx4_en_priv *priv = netdev_priv(dev);
2099 struct mlx4_en_dev *mdev = priv->mdev;
2100 int err = 0;
2101
2102 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2103 dev->mtu, new_mtu);
2104
2105 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2106 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2107 return -EPERM;
2108 }
2109 dev->mtu = new_mtu;
2110
2111 if (netif_running(dev)) {
2112 mutex_lock(&mdev->state_lock);
2113 if (!mdev->device_up) {
2114 /* NIC is probably restarting - let watchdog task reset
2115 * the port */
2116 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2117 } else {
2118 mlx4_en_stop_port(dev, 1);
2119 err = mlx4_en_start_port(dev);
2120 if (err) {
2121 en_err(priv, "Failed restarting port:%d\n",
2122 priv->port);
2123 queue_work(mdev->workqueue, &priv->watchdog_task);
2124 }
2125 }
2126 mutex_unlock(&mdev->state_lock);
2127 }
2128 return 0;
2129 }
2130
2131 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2132 {
2133 struct mlx4_en_priv *priv = netdev_priv(dev);
2134 struct mlx4_en_dev *mdev = priv->mdev;
2135 struct hwtstamp_config config;
2136
2137 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2138 return -EFAULT;
2139
2140 /* reserved for future extensions */
2141 if (config.flags)
2142 return -EINVAL;
2143
2144 /* device doesn't support time stamping */
2145 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2146 return -EINVAL;
2147
2148 /* TX HW timestamp */
2149 switch (config.tx_type) {
2150 case HWTSTAMP_TX_OFF:
2151 case HWTSTAMP_TX_ON:
2152 break;
2153 default:
2154 return -ERANGE;
2155 }
2156
2157 /* RX HW timestamp */
2158 switch (config.rx_filter) {
2159 case HWTSTAMP_FILTER_NONE:
2160 break;
2161 case HWTSTAMP_FILTER_ALL:
2162 case HWTSTAMP_FILTER_SOME:
2163 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2164 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2165 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2166 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2167 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2168 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2169 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2170 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2171 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2172 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2173 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2174 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2175 config.rx_filter = HWTSTAMP_FILTER_ALL;
2176 break;
2177 default:
2178 return -ERANGE;
2179 }
2180
2181 if (mlx4_en_reset_config(dev, config, dev->features)) {
2182 config.tx_type = HWTSTAMP_TX_OFF;
2183 config.rx_filter = HWTSTAMP_FILTER_NONE;
2184 }
2185
2186 return copy_to_user(ifr->ifr_data, &config,
2187 sizeof(config)) ? -EFAULT : 0;
2188 }
2189
2190 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2191 {
2192 struct mlx4_en_priv *priv = netdev_priv(dev);
2193
2194 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2195 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2196 }
2197
2198 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2199 {
2200 switch (cmd) {
2201 case SIOCSHWTSTAMP:
2202 return mlx4_en_hwtstamp_set(dev, ifr);
2203 case SIOCGHWTSTAMP:
2204 return mlx4_en_hwtstamp_get(dev, ifr);
2205 default:
2206 return -EOPNOTSUPP;
2207 }
2208 }
2209
2210 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2211 netdev_features_t features)
2212 {
2213 struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2214 struct mlx4_en_dev *mdev = en_priv->mdev;
2215
2216 /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2217 * enable/disable make sure S-TAG flag is always in same state as
2218 * C-TAG.
2219 */
2220 if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2221 !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2222 features |= NETIF_F_HW_VLAN_STAG_RX;
2223 else
2224 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2225
2226 return features;
2227 }
2228
2229 static int mlx4_en_set_features(struct net_device *netdev,
2230 netdev_features_t features)
2231 {
2232 struct mlx4_en_priv *priv = netdev_priv(netdev);
2233 bool reset = false;
2234 int ret = 0;
2235
2236 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2237 en_info(priv, "Turn %s RX-FCS\n",
2238 (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2239 reset = true;
2240 }
2241
2242 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2243 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2244
2245 en_info(priv, "Turn %s RX-ALL\n",
2246 ignore_fcs_value ? "ON" : "OFF");
2247 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2248 priv->port, ignore_fcs_value);
2249 if (ret)
2250 return ret;
2251 }
2252
2253 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2254 en_info(priv, "Turn %s RX vlan strip offload\n",
2255 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2256 reset = true;
2257 }
2258
2259 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2260 en_info(priv, "Turn %s TX vlan strip offload\n",
2261 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2262
2263 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2264 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2265 (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2266
2267 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2268 en_info(priv, "Turn %s loopback\n",
2269 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2270 mlx4_en_update_loopback_state(netdev, features);
2271 }
2272
2273 if (reset) {
2274 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2275 features);
2276 if (ret)
2277 return ret;
2278 }
2279
2280 return 0;
2281 }
2282
2283 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2284 {
2285 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2286 struct mlx4_en_dev *mdev = en_priv->mdev;
2287 u64 mac_u64 = mlx4_mac_to_u64(mac);
2288
2289 if (is_multicast_ether_addr(mac))
2290 return -EINVAL;
2291
2292 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2293 }
2294
2295 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2296 {
2297 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2298 struct mlx4_en_dev *mdev = en_priv->mdev;
2299
2300 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2301 }
2302
2303 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2304 int max_tx_rate)
2305 {
2306 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2307 struct mlx4_en_dev *mdev = en_priv->mdev;
2308
2309 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2310 max_tx_rate);
2311 }
2312
2313 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2314 {
2315 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2316 struct mlx4_en_dev *mdev = en_priv->mdev;
2317
2318 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2319 }
2320
2321 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2322 {
2323 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2324 struct mlx4_en_dev *mdev = en_priv->mdev;
2325
2326 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2327 }
2328
2329 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2330 {
2331 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2332 struct mlx4_en_dev *mdev = en_priv->mdev;
2333
2334 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2335 }
2336
2337 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2338 struct ifla_vf_stats *vf_stats)
2339 {
2340 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2341 struct mlx4_en_dev *mdev = en_priv->mdev;
2342
2343 return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2344 }
2345
2346 #define PORT_ID_BYTE_LEN 8
2347 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2348 struct netdev_phys_item_id *ppid)
2349 {
2350 struct mlx4_en_priv *priv = netdev_priv(dev);
2351 struct mlx4_dev *mdev = priv->mdev->dev;
2352 int i;
2353 u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2354
2355 if (!phys_port_id)
2356 return -EOPNOTSUPP;
2357
2358 ppid->id_len = sizeof(phys_port_id);
2359 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2360 ppid->id[i] = phys_port_id & 0xff;
2361 phys_port_id >>= 8;
2362 }
2363 return 0;
2364 }
2365
2366 #ifdef CONFIG_MLX4_EN_VXLAN
2367 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2368 {
2369 int ret;
2370 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2371 vxlan_add_task);
2372
2373 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2374 if (ret)
2375 goto out;
2376
2377 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2378 VXLAN_STEER_BY_OUTER_MAC, 1);
2379 out:
2380 if (ret) {
2381 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2382 return;
2383 }
2384
2385 /* set offloads */
2386 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2387 NETIF_F_RXCSUM |
2388 NETIF_F_TSO | NETIF_F_TSO6 |
2389 NETIF_F_GSO_UDP_TUNNEL |
2390 NETIF_F_GSO_UDP_TUNNEL_CSUM |
2391 NETIF_F_GSO_PARTIAL;
2392 }
2393
2394 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2395 {
2396 int ret;
2397 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2398 vxlan_del_task);
2399 /* unset offloads */
2400 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2401 NETIF_F_RXCSUM |
2402 NETIF_F_TSO | NETIF_F_TSO6 |
2403 NETIF_F_GSO_UDP_TUNNEL |
2404 NETIF_F_GSO_UDP_TUNNEL_CSUM |
2405 NETIF_F_GSO_PARTIAL);
2406
2407 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2408 VXLAN_STEER_BY_OUTER_MAC, 0);
2409 if (ret)
2410 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2411
2412 priv->vxlan_port = 0;
2413 }
2414
2415 static void mlx4_en_add_vxlan_port(struct net_device *dev,
2416 sa_family_t sa_family, __be16 port)
2417 {
2418 struct mlx4_en_priv *priv = netdev_priv(dev);
2419 __be16 current_port;
2420
2421 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2422 return;
2423
2424 if (sa_family == AF_INET6)
2425 return;
2426
2427 current_port = priv->vxlan_port;
2428 if (current_port && current_port != port) {
2429 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2430 ntohs(current_port), ntohs(port));
2431 return;
2432 }
2433
2434 priv->vxlan_port = port;
2435 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2436 }
2437
2438 static void mlx4_en_del_vxlan_port(struct net_device *dev,
2439 sa_family_t sa_family, __be16 port)
2440 {
2441 struct mlx4_en_priv *priv = netdev_priv(dev);
2442 __be16 current_port;
2443
2444 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2445 return;
2446
2447 if (sa_family == AF_INET6)
2448 return;
2449
2450 current_port = priv->vxlan_port;
2451 if (current_port != port) {
2452 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2453 return;
2454 }
2455
2456 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2457 }
2458
2459 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2460 struct net_device *dev,
2461 netdev_features_t features)
2462 {
2463 features = vlan_features_check(skb, features);
2464 features = vxlan_features_check(skb, features);
2465
2466 /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2467 * support inner IPv6 checksums and segmentation so we need to
2468 * strip that feature if this is an IPv6 encapsulated frame.
2469 */
2470 if (skb->encapsulation &&
2471 (skb->ip_summed == CHECKSUM_PARTIAL)) {
2472 struct mlx4_en_priv *priv = netdev_priv(dev);
2473
2474 if (!priv->vxlan_port ||
2475 (ip_hdr(skb)->version != 4) ||
2476 (udp_hdr(skb)->dest != priv->vxlan_port))
2477 features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2478 }
2479
2480 return features;
2481 }
2482 #endif
2483
2484 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2485 {
2486 struct mlx4_en_priv *priv = netdev_priv(dev);
2487 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index];
2488 struct mlx4_update_qp_params params;
2489 int err;
2490
2491 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2492 return -EOPNOTSUPP;
2493
2494 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2495 if (maxrate >> 12) {
2496 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2497 params.rate_val = maxrate / 1000;
2498 } else if (maxrate) {
2499 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2500 params.rate_val = maxrate;
2501 } else { /* zero serves to revoke the QP rate-limitation */
2502 params.rate_unit = 0;
2503 params.rate_val = 0;
2504 }
2505
2506 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2507 &params);
2508 return err;
2509 }
2510
2511 static const struct net_device_ops mlx4_netdev_ops = {
2512 .ndo_open = mlx4_en_open,
2513 .ndo_stop = mlx4_en_close,
2514 .ndo_start_xmit = mlx4_en_xmit,
2515 .ndo_select_queue = mlx4_en_select_queue,
2516 .ndo_get_stats64 = mlx4_en_get_stats64,
2517 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2518 .ndo_set_mac_address = mlx4_en_set_mac,
2519 .ndo_validate_addr = eth_validate_addr,
2520 .ndo_change_mtu = mlx4_en_change_mtu,
2521 .ndo_do_ioctl = mlx4_en_ioctl,
2522 .ndo_tx_timeout = mlx4_en_tx_timeout,
2523 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2524 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2525 #ifdef CONFIG_NET_POLL_CONTROLLER
2526 .ndo_poll_controller = mlx4_en_netpoll,
2527 #endif
2528 .ndo_set_features = mlx4_en_set_features,
2529 .ndo_fix_features = mlx4_en_fix_features,
2530 .ndo_setup_tc = __mlx4_en_setup_tc,
2531 #ifdef CONFIG_RFS_ACCEL
2532 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2533 #endif
2534 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2535 #ifdef CONFIG_MLX4_EN_VXLAN
2536 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
2537 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
2538 .ndo_features_check = mlx4_en_features_check,
2539 #endif
2540 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
2541 };
2542
2543 static const struct net_device_ops mlx4_netdev_ops_master = {
2544 .ndo_open = mlx4_en_open,
2545 .ndo_stop = mlx4_en_close,
2546 .ndo_start_xmit = mlx4_en_xmit,
2547 .ndo_select_queue = mlx4_en_select_queue,
2548 .ndo_get_stats64 = mlx4_en_get_stats64,
2549 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2550 .ndo_set_mac_address = mlx4_en_set_mac,
2551 .ndo_validate_addr = eth_validate_addr,
2552 .ndo_change_mtu = mlx4_en_change_mtu,
2553 .ndo_tx_timeout = mlx4_en_tx_timeout,
2554 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2555 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2556 .ndo_set_vf_mac = mlx4_en_set_vf_mac,
2557 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2558 .ndo_set_vf_rate = mlx4_en_set_vf_rate,
2559 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2560 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2561 .ndo_get_vf_stats = mlx4_en_get_vf_stats,
2562 .ndo_get_vf_config = mlx4_en_get_vf_config,
2563 #ifdef CONFIG_NET_POLL_CONTROLLER
2564 .ndo_poll_controller = mlx4_en_netpoll,
2565 #endif
2566 .ndo_set_features = mlx4_en_set_features,
2567 .ndo_fix_features = mlx4_en_fix_features,
2568 .ndo_setup_tc = __mlx4_en_setup_tc,
2569 #ifdef CONFIG_RFS_ACCEL
2570 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2571 #endif
2572 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2573 #ifdef CONFIG_MLX4_EN_VXLAN
2574 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
2575 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
2576 .ndo_features_check = mlx4_en_features_check,
2577 #endif
2578 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
2579 };
2580
2581 struct mlx4_en_bond {
2582 struct work_struct work;
2583 struct mlx4_en_priv *priv;
2584 int is_bonded;
2585 struct mlx4_port_map port_map;
2586 };
2587
2588 static void mlx4_en_bond_work(struct work_struct *work)
2589 {
2590 struct mlx4_en_bond *bond = container_of(work,
2591 struct mlx4_en_bond,
2592 work);
2593 int err = 0;
2594 struct mlx4_dev *dev = bond->priv->mdev->dev;
2595
2596 if (bond->is_bonded) {
2597 if (!mlx4_is_bonded(dev)) {
2598 err = mlx4_bond(dev);
2599 if (err)
2600 en_err(bond->priv, "Fail to bond device\n");
2601 }
2602 if (!err) {
2603 err = mlx4_port_map_set(dev, &bond->port_map);
2604 if (err)
2605 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2606 bond->port_map.port1,
2607 bond->port_map.port2,
2608 err);
2609 }
2610 } else if (mlx4_is_bonded(dev)) {
2611 err = mlx4_unbond(dev);
2612 if (err)
2613 en_err(bond->priv, "Fail to unbond device\n");
2614 }
2615 dev_put(bond->priv->dev);
2616 kfree(bond);
2617 }
2618
2619 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2620 u8 v2p_p1, u8 v2p_p2)
2621 {
2622 struct mlx4_en_bond *bond = NULL;
2623
2624 bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2625 if (!bond)
2626 return -ENOMEM;
2627
2628 INIT_WORK(&bond->work, mlx4_en_bond_work);
2629 bond->priv = priv;
2630 bond->is_bonded = is_bonded;
2631 bond->port_map.port1 = v2p_p1;
2632 bond->port_map.port2 = v2p_p2;
2633 dev_hold(priv->dev);
2634 queue_work(priv->mdev->workqueue, &bond->work);
2635 return 0;
2636 }
2637
2638 int mlx4_en_netdev_event(struct notifier_block *this,
2639 unsigned long event, void *ptr)
2640 {
2641 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2642 u8 port = 0;
2643 struct mlx4_en_dev *mdev;
2644 struct mlx4_dev *dev;
2645 int i, num_eth_ports = 0;
2646 bool do_bond = true;
2647 struct mlx4_en_priv *priv;
2648 u8 v2p_port1 = 0;
2649 u8 v2p_port2 = 0;
2650
2651 if (!net_eq(dev_net(ndev), &init_net))
2652 return NOTIFY_DONE;
2653
2654 mdev = container_of(this, struct mlx4_en_dev, nb);
2655 dev = mdev->dev;
2656
2657 /* Go into this mode only when two network devices set on two ports
2658 * of the same mlx4 device are slaves of the same bonding master
2659 */
2660 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2661 ++num_eth_ports;
2662 if (!port && (mdev->pndev[i] == ndev))
2663 port = i;
2664 mdev->upper[i] = mdev->pndev[i] ?
2665 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2666 /* condition not met: network device is a slave */
2667 if (!mdev->upper[i])
2668 do_bond = false;
2669 if (num_eth_ports < 2)
2670 continue;
2671 /* condition not met: same master */
2672 if (mdev->upper[i] != mdev->upper[i-1])
2673 do_bond = false;
2674 }
2675 /* condition not met: 2 salves */
2676 do_bond = (num_eth_ports == 2) ? do_bond : false;
2677
2678 /* handle only events that come with enough info */
2679 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2680 return NOTIFY_DONE;
2681
2682 priv = netdev_priv(ndev);
2683 if (do_bond) {
2684 struct netdev_notifier_bonding_info *notifier_info = ptr;
2685 struct netdev_bonding_info *bonding_info =
2686 &notifier_info->bonding_info;
2687
2688 /* required mode 1, 2 or 4 */
2689 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2690 (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2691 (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2692 do_bond = false;
2693
2694 /* require exactly 2 slaves */
2695 if (bonding_info->master.num_slaves != 2)
2696 do_bond = false;
2697
2698 /* calc v2p */
2699 if (do_bond) {
2700 if (bonding_info->master.bond_mode ==
2701 BOND_MODE_ACTIVEBACKUP) {
2702 /* in active-backup mode virtual ports are
2703 * mapped to the physical port of the active
2704 * slave */
2705 if (bonding_info->slave.state ==
2706 BOND_STATE_BACKUP) {
2707 if (port == 1) {
2708 v2p_port1 = 2;
2709 v2p_port2 = 2;
2710 } else {
2711 v2p_port1 = 1;
2712 v2p_port2 = 1;
2713 }
2714 } else { /* BOND_STATE_ACTIVE */
2715 if (port == 1) {
2716 v2p_port1 = 1;
2717 v2p_port2 = 1;
2718 } else {
2719 v2p_port1 = 2;
2720 v2p_port2 = 2;
2721 }
2722 }
2723 } else { /* Active-Active */
2724 /* in active-active mode a virtual port is
2725 * mapped to the native physical port if and only
2726 * if the physical port is up */
2727 __s8 link = bonding_info->slave.link;
2728
2729 if (port == 1)
2730 v2p_port2 = 2;
2731 else
2732 v2p_port1 = 1;
2733 if ((link == BOND_LINK_UP) ||
2734 (link == BOND_LINK_FAIL)) {
2735 if (port == 1)
2736 v2p_port1 = 1;
2737 else
2738 v2p_port2 = 2;
2739 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2740 if (port == 1)
2741 v2p_port1 = 2;
2742 else
2743 v2p_port2 = 1;
2744 }
2745 }
2746 }
2747 }
2748
2749 mlx4_en_queue_bond_work(priv, do_bond,
2750 v2p_port1, v2p_port2);
2751
2752 return NOTIFY_DONE;
2753 }
2754
2755 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
2756 struct mlx4_en_stats_bitmap *stats_bitmap,
2757 u8 rx_ppp, u8 rx_pause,
2758 u8 tx_ppp, u8 tx_pause)
2759 {
2760 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
2761
2762 if (!mlx4_is_slave(dev) &&
2763 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
2764 mutex_lock(&stats_bitmap->mutex);
2765 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
2766
2767 if (rx_ppp)
2768 bitmap_set(stats_bitmap->bitmap, last_i,
2769 NUM_FLOW_PRIORITY_STATS_RX);
2770 last_i += NUM_FLOW_PRIORITY_STATS_RX;
2771
2772 if (rx_pause && !(rx_ppp))
2773 bitmap_set(stats_bitmap->bitmap, last_i,
2774 NUM_FLOW_STATS_RX);
2775 last_i += NUM_FLOW_STATS_RX;
2776
2777 if (tx_ppp)
2778 bitmap_set(stats_bitmap->bitmap, last_i,
2779 NUM_FLOW_PRIORITY_STATS_TX);
2780 last_i += NUM_FLOW_PRIORITY_STATS_TX;
2781
2782 if (tx_pause && !(tx_ppp))
2783 bitmap_set(stats_bitmap->bitmap, last_i,
2784 NUM_FLOW_STATS_TX);
2785 last_i += NUM_FLOW_STATS_TX;
2786
2787 mutex_unlock(&stats_bitmap->mutex);
2788 }
2789 }
2790
2791 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
2792 struct mlx4_en_stats_bitmap *stats_bitmap,
2793 u8 rx_ppp, u8 rx_pause,
2794 u8 tx_ppp, u8 tx_pause)
2795 {
2796 int last_i = 0;
2797
2798 mutex_init(&stats_bitmap->mutex);
2799 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
2800
2801 if (mlx4_is_slave(dev)) {
2802 bitmap_set(stats_bitmap->bitmap, last_i +
2803 MLX4_FIND_NETDEV_STAT(rx_packets), 1);
2804 bitmap_set(stats_bitmap->bitmap, last_i +
2805 MLX4_FIND_NETDEV_STAT(tx_packets), 1);
2806 bitmap_set(stats_bitmap->bitmap, last_i +
2807 MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
2808 bitmap_set(stats_bitmap->bitmap, last_i +
2809 MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
2810 bitmap_set(stats_bitmap->bitmap, last_i +
2811 MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
2812 bitmap_set(stats_bitmap->bitmap, last_i +
2813 MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
2814 } else {
2815 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
2816 }
2817 last_i += NUM_MAIN_STATS;
2818
2819 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
2820 last_i += NUM_PORT_STATS;
2821
2822 if (mlx4_is_master(dev))
2823 bitmap_set(stats_bitmap->bitmap, last_i,
2824 NUM_PF_STATS);
2825 last_i += NUM_PF_STATS;
2826
2827 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
2828 rx_ppp, rx_pause,
2829 tx_ppp, tx_pause);
2830 last_i += NUM_FLOW_STATS;
2831
2832 if (!mlx4_is_slave(dev))
2833 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
2834 }
2835
2836 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2837 struct mlx4_en_port_profile *prof)
2838 {
2839 struct net_device *dev;
2840 struct mlx4_en_priv *priv;
2841 int i;
2842 int err;
2843
2844 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2845 MAX_TX_RINGS, MAX_RX_RINGS);
2846 if (dev == NULL)
2847 return -ENOMEM;
2848
2849 netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2850 netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2851
2852 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
2853 dev->dev_port = port - 1;
2854
2855 /*
2856 * Initialize driver private data
2857 */
2858
2859 priv = netdev_priv(dev);
2860 memset(priv, 0, sizeof(struct mlx4_en_priv));
2861 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
2862 spin_lock_init(&priv->stats_lock);
2863 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2864 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2865 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2866 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2867 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2868 #ifdef CONFIG_MLX4_EN_VXLAN
2869 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2870 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2871 #endif
2872 #ifdef CONFIG_RFS_ACCEL
2873 INIT_LIST_HEAD(&priv->filters);
2874 spin_lock_init(&priv->filters_lock);
2875 #endif
2876
2877 priv->dev = dev;
2878 priv->mdev = mdev;
2879 priv->ddev = &mdev->pdev->dev;
2880 priv->prof = prof;
2881 priv->port = port;
2882 priv->port_up = false;
2883 priv->flags = prof->flags;
2884 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
2885 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2886 MLX4_WQE_CTRL_SOLICITED);
2887 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2888 priv->tx_ring_num = prof->tx_ring_num;
2889 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
2890 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
2891
2892 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2893 GFP_KERNEL);
2894 if (!priv->tx_ring) {
2895 err = -ENOMEM;
2896 goto out;
2897 }
2898 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2899 GFP_KERNEL);
2900 if (!priv->tx_cq) {
2901 err = -ENOMEM;
2902 goto out;
2903 }
2904 priv->rx_ring_num = prof->rx_ring_num;
2905 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2906 priv->cqe_size = mdev->dev->caps.cqe_size;
2907 priv->mac_index = -1;
2908 priv->msg_enable = MLX4_EN_MSG_LEVEL;
2909 #ifdef CONFIG_MLX4_EN_DCB
2910 if (!mlx4_is_slave(priv->mdev->dev)) {
2911 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2912 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2913 } else {
2914 en_info(priv, "enabling only PFC DCB ops\n");
2915 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2916 }
2917 }
2918 #endif
2919
2920 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2921 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2922
2923 /* Query for default mac and max mtu */
2924 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2925
2926 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
2927 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
2928 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
2929
2930 /* Set default MAC */
2931 dev->addr_len = ETH_ALEN;
2932 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2933 if (!is_valid_ether_addr(dev->dev_addr)) {
2934 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2935 priv->port, dev->dev_addr);
2936 err = -EINVAL;
2937 goto out;
2938 } else if (mlx4_is_slave(priv->mdev->dev) &&
2939 (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
2940 /* Random MAC was assigned in mlx4_slave_cap
2941 * in mlx4_core module
2942 */
2943 dev->addr_assign_type |= NET_ADDR_RANDOM;
2944 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2945 }
2946
2947 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
2948
2949 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2950 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2951 err = mlx4_en_alloc_resources(priv);
2952 if (err)
2953 goto out;
2954
2955 /* Initialize time stamping config */
2956 priv->hwtstamp_config.flags = 0;
2957 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2958 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2959
2960 /* Allocate page for receive rings */
2961 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2962 MLX4_EN_PAGE_SIZE);
2963 if (err) {
2964 en_err(priv, "Failed to allocate page for rx qps\n");
2965 goto out;
2966 }
2967 priv->allocated = 1;
2968
2969 /*
2970 * Initialize netdev entry points
2971 */
2972 if (mlx4_is_master(priv->mdev->dev))
2973 dev->netdev_ops = &mlx4_netdev_ops_master;
2974 else
2975 dev->netdev_ops = &mlx4_netdev_ops;
2976 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2977 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2978 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2979
2980 dev->ethtool_ops = &mlx4_en_ethtool_ops;
2981
2982 /*
2983 * Set driver features
2984 */
2985 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2986 if (mdev->LSO_support)
2987 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2988
2989 dev->vlan_features = dev->hw_features;
2990
2991 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2992 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2993 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2994 NETIF_F_HW_VLAN_CTAG_FILTER;
2995 dev->hw_features |= NETIF_F_LOOPBACK |
2996 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
2997
2998 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
2999 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3000 NETIF_F_HW_VLAN_STAG_FILTER;
3001 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3002 }
3003
3004 if (mlx4_is_slave(mdev->dev)) {
3005 int phv;
3006
3007 err = get_phv_bit(mdev->dev, port, &phv);
3008 if (!err && phv) {
3009 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3010 priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3011 }
3012 } else {
3013 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3014 !(mdev->dev->caps.flags2 &
3015 MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3016 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3017 }
3018
3019 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3020 dev->hw_features |= NETIF_F_RXFCS;
3021
3022 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3023 dev->hw_features |= NETIF_F_RXALL;
3024
3025 if (mdev->dev->caps.steering_mode ==
3026 MLX4_STEERING_MODE_DEVICE_MANAGED &&
3027 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3028 dev->hw_features |= NETIF_F_NTUPLE;
3029
3030 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3031 dev->priv_flags |= IFF_UNICAST_FLT;
3032
3033 /* Setting a default hash function value */
3034 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3035 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3036 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3037 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3038 } else {
3039 en_warn(priv,
3040 "No RSS hash capabilities exposed, using Toeplitz\n");
3041 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3042 }
3043
3044 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3045 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3046 NETIF_F_GSO_UDP_TUNNEL_CSUM |
3047 NETIF_F_GSO_PARTIAL;
3048 dev->features |= NETIF_F_GSO_UDP_TUNNEL |
3049 NETIF_F_GSO_UDP_TUNNEL_CSUM |
3050 NETIF_F_GSO_PARTIAL;
3051 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3052 }
3053
3054 mdev->pndev[port] = dev;
3055 mdev->upper[port] = NULL;
3056
3057 netif_carrier_off(dev);
3058 mlx4_en_set_default_moderation(priv);
3059
3060 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
3061 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3062
3063 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3064
3065 /* Configure port */
3066 mlx4_en_calc_rx_buf(dev);
3067 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3068 priv->rx_skb_size + ETH_FCS_LEN,
3069 prof->tx_pause, prof->tx_ppp,
3070 prof->rx_pause, prof->rx_ppp);
3071 if (err) {
3072 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3073 priv->port, err);
3074 goto out;
3075 }
3076
3077 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3078 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3079 if (err) {
3080 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3081 err);
3082 goto out;
3083 }
3084 }
3085
3086 /* Init port */
3087 en_warn(priv, "Initializing port\n");
3088 err = mlx4_INIT_PORT(mdev->dev, priv->port);
3089 if (err) {
3090 en_err(priv, "Failed Initializing port\n");
3091 goto out;
3092 }
3093 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3094
3095 /* Initialize time stamp mechanism */
3096 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3097 mlx4_en_init_timestamp(mdev);
3098
3099 queue_delayed_work(mdev->workqueue, &priv->service_task,
3100 SERVICE_TASK_DELAY);
3101
3102 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3103 mdev->profile.prof[priv->port].rx_ppp,
3104 mdev->profile.prof[priv->port].rx_pause,
3105 mdev->profile.prof[priv->port].tx_ppp,
3106 mdev->profile.prof[priv->port].tx_pause);
3107
3108 err = register_netdev(dev);
3109 if (err) {
3110 en_err(priv, "Netdev registration failed for port %d\n", port);
3111 goto out;
3112 }
3113
3114 priv->registered = 1;
3115 devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3116 dev);
3117
3118 return 0;
3119
3120 out:
3121 mlx4_en_destroy_netdev(dev);
3122 return err;
3123 }
3124
3125 int mlx4_en_reset_config(struct net_device *dev,
3126 struct hwtstamp_config ts_config,
3127 netdev_features_t features)
3128 {
3129 struct mlx4_en_priv *priv = netdev_priv(dev);
3130 struct mlx4_en_dev *mdev = priv->mdev;
3131 int port_up = 0;
3132 int err = 0;
3133
3134 if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3135 priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3136 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3137 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3138 return 0; /* Nothing to change */
3139
3140 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3141 (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3142 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3143 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3144 return -EINVAL;
3145 }
3146
3147 mutex_lock(&mdev->state_lock);
3148 if (priv->port_up) {
3149 port_up = 1;
3150 mlx4_en_stop_port(dev, 1);
3151 }
3152
3153 mlx4_en_free_resources(priv);
3154
3155 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3156 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3157
3158 priv->hwtstamp_config.tx_type = ts_config.tx_type;
3159 priv->hwtstamp_config.rx_filter = ts_config.rx_filter;
3160
3161 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3162 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3163 dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3164 else
3165 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3166 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3167 /* RX time-stamping is OFF, update the RX vlan offload
3168 * to the latest wanted state
3169 */
3170 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3171 dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3172 else
3173 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3174 }
3175
3176 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3177 if (features & NETIF_F_RXFCS)
3178 dev->features |= NETIF_F_RXFCS;
3179 else
3180 dev->features &= ~NETIF_F_RXFCS;
3181 }
3182
3183 /* RX vlan offload and RX time-stamping can't co-exist !
3184 * Regardless of the caller's choice,
3185 * Turn Off RX vlan offload in case of time-stamping is ON
3186 */
3187 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3188 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3189 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3190 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3191 }
3192
3193 err = mlx4_en_alloc_resources(priv);
3194 if (err) {
3195 en_err(priv, "Failed reallocating port resources\n");
3196 goto out;
3197 }
3198 if (port_up) {
3199 err = mlx4_en_start_port(dev);
3200 if (err)
3201 en_err(priv, "Failed starting port\n");
3202 }
3203
3204 out:
3205 mutex_unlock(&mdev->state_lock);
3206 netdev_features_change(dev);
3207 return err;
3208 }
Linux with added FPC-III support