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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[mirror_ubuntu-artful-kernel.git] / drivers / net / ethernet / mellanox / mlx4 / en_netdev.c
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/bpf.h>
35 #include <linux/etherdevice.h>
36 #include <linux/tcp.h>
37 #include <linux/if_vlan.h>
38 #include <linux/delay.h>
39 #include <linux/slab.h>
40 #include <linux/hash.h>
41 #include <net/ip.h>
42 #include <net/busy_poll.h>
43 #include <net/vxlan.h>
44 #include <net/devlink.h>
45
46 #include <linux/mlx4/driver.h>
47 #include <linux/mlx4/device.h>
48 #include <linux/mlx4/cmd.h>
49 #include <linux/mlx4/cq.h>
50
51 #include "mlx4_en.h"
52 #include "en_port.h"
53
54 #define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \
55 XDP_PACKET_HEADROOM))
56
57 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
58 {
59 struct mlx4_en_priv *priv = netdev_priv(dev);
60 int i;
61 unsigned int offset = 0;
62
63 if (up && up != MLX4_EN_NUM_UP)
64 return -EINVAL;
65
66 netdev_set_num_tc(dev, up);
67
68 /* Partition Tx queues evenly amongst UP's */
69 for (i = 0; i < up; i++) {
70 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
71 offset += priv->num_tx_rings_p_up;
72 }
73
74 #ifdef CONFIG_MLX4_EN_DCB
75 if (!mlx4_is_slave(priv->mdev->dev)) {
76 if (up) {
77 if (priv->dcbx_cap)
78 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
79 } else {
80 priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
81 priv->cee_config.pfc_state = false;
82 }
83 }
84 #endif /* CONFIG_MLX4_EN_DCB */
85
86 return 0;
87 }
88
89 static int __mlx4_en_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
90 struct tc_to_netdev *tc)
91 {
92 if (tc->type != TC_SETUP_MQPRIO)
93 return -EINVAL;
94
95 return mlx4_en_setup_tc(dev, tc->tc);
96 }
97
98 #ifdef CONFIG_RFS_ACCEL
99
100 struct mlx4_en_filter {
101 struct list_head next;
102 struct work_struct work;
103
104 u8 ip_proto;
105 __be32 src_ip;
106 __be32 dst_ip;
107 __be16 src_port;
108 __be16 dst_port;
109
110 int rxq_index;
111 struct mlx4_en_priv *priv;
112 u32 flow_id; /* RFS infrastructure id */
113 int id; /* mlx4_en driver id */
114 u64 reg_id; /* Flow steering API id */
115 u8 activated; /* Used to prevent expiry before filter
116 * is attached
117 */
118 struct hlist_node filter_chain;
119 };
120
121 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
122
123 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
124 {
125 switch (ip_proto) {
126 case IPPROTO_UDP:
127 return MLX4_NET_TRANS_RULE_ID_UDP;
128 case IPPROTO_TCP:
129 return MLX4_NET_TRANS_RULE_ID_TCP;
130 default:
131 return MLX4_NET_TRANS_RULE_NUM;
132 }
133 };
134
135 /* Must not acquire state_lock, as its corresponding work_sync
136 * is done under it.
137 */
138 static void mlx4_en_filter_work(struct work_struct *work)
139 {
140 struct mlx4_en_filter *filter = container_of(work,
141 struct mlx4_en_filter,
142 work);
143 struct mlx4_en_priv *priv = filter->priv;
144 struct mlx4_spec_list spec_tcp_udp = {
145 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
146 {
147 .tcp_udp = {
148 .dst_port = filter->dst_port,
149 .dst_port_msk = (__force __be16)-1,
150 .src_port = filter->src_port,
151 .src_port_msk = (__force __be16)-1,
152 },
153 },
154 };
155 struct mlx4_spec_list spec_ip = {
156 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
157 {
158 .ipv4 = {
159 .dst_ip = filter->dst_ip,
160 .dst_ip_msk = (__force __be32)-1,
161 .src_ip = filter->src_ip,
162 .src_ip_msk = (__force __be32)-1,
163 },
164 },
165 };
166 struct mlx4_spec_list spec_eth = {
167 .id = MLX4_NET_TRANS_RULE_ID_ETH,
168 };
169 struct mlx4_net_trans_rule rule = {
170 .list = LIST_HEAD_INIT(rule.list),
171 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
172 .exclusive = 1,
173 .allow_loopback = 1,
174 .promisc_mode = MLX4_FS_REGULAR,
175 .port = priv->port,
176 .priority = MLX4_DOMAIN_RFS,
177 };
178 int rc;
179 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
180
181 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
182 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
183 filter->ip_proto);
184 goto ignore;
185 }
186 list_add_tail(&spec_eth.list, &rule.list);
187 list_add_tail(&spec_ip.list, &rule.list);
188 list_add_tail(&spec_tcp_udp.list, &rule.list);
189
190 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
191 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
192 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
193
194 filter->activated = 0;
195
196 if (filter->reg_id) {
197 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
198 if (rc && rc != -ENOENT)
199 en_err(priv, "Error detaching flow. rc = %d\n", rc);
200 }
201
202 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
203 if (rc)
204 en_err(priv, "Error attaching flow. err = %d\n", rc);
205
206 ignore:
207 mlx4_en_filter_rfs_expire(priv);
208
209 filter->activated = 1;
210 }
211
212 static inline struct hlist_head *
213 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
214 __be16 src_port, __be16 dst_port)
215 {
216 unsigned long l;
217 int bucket_idx;
218
219 l = (__force unsigned long)src_port |
220 ((__force unsigned long)dst_port << 2);
221 l ^= (__force unsigned long)(src_ip ^ dst_ip);
222
223 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
224
225 return &priv->filter_hash[bucket_idx];
226 }
227
228 static struct mlx4_en_filter *
229 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
230 __be32 dst_ip, u8 ip_proto, __be16 src_port,
231 __be16 dst_port, u32 flow_id)
232 {
233 struct mlx4_en_filter *filter = NULL;
234
235 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
236 if (!filter)
237 return NULL;
238
239 filter->priv = priv;
240 filter->rxq_index = rxq_index;
241 INIT_WORK(&filter->work, mlx4_en_filter_work);
242
243 filter->src_ip = src_ip;
244 filter->dst_ip = dst_ip;
245 filter->ip_proto = ip_proto;
246 filter->src_port = src_port;
247 filter->dst_port = dst_port;
248
249 filter->flow_id = flow_id;
250
251 filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
252
253 list_add_tail(&filter->next, &priv->filters);
254 hlist_add_head(&filter->filter_chain,
255 filter_hash_bucket(priv, src_ip, dst_ip, src_port,
256 dst_port));
257
258 return filter;
259 }
260
261 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
262 {
263 struct mlx4_en_priv *priv = filter->priv;
264 int rc;
265
266 list_del(&filter->next);
267
268 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
269 if (rc && rc != -ENOENT)
270 en_err(priv, "Error detaching flow. rc = %d\n", rc);
271
272 kfree(filter);
273 }
274
275 static inline struct mlx4_en_filter *
276 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
277 u8 ip_proto, __be16 src_port, __be16 dst_port)
278 {
279 struct mlx4_en_filter *filter;
280 struct mlx4_en_filter *ret = NULL;
281
282 hlist_for_each_entry(filter,
283 filter_hash_bucket(priv, src_ip, dst_ip,
284 src_port, dst_port),
285 filter_chain) {
286 if (filter->src_ip == src_ip &&
287 filter->dst_ip == dst_ip &&
288 filter->ip_proto == ip_proto &&
289 filter->src_port == src_port &&
290 filter->dst_port == dst_port) {
291 ret = filter;
292 break;
293 }
294 }
295
296 return ret;
297 }
298
299 static int
300 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
301 u16 rxq_index, u32 flow_id)
302 {
303 struct mlx4_en_priv *priv = netdev_priv(net_dev);
304 struct mlx4_en_filter *filter;
305 const struct iphdr *ip;
306 const __be16 *ports;
307 u8 ip_proto;
308 __be32 src_ip;
309 __be32 dst_ip;
310 __be16 src_port;
311 __be16 dst_port;
312 int nhoff = skb_network_offset(skb);
313 int ret = 0;
314
315 if (skb->protocol != htons(ETH_P_IP))
316 return -EPROTONOSUPPORT;
317
318 ip = (const struct iphdr *)(skb->data + nhoff);
319 if (ip_is_fragment(ip))
320 return -EPROTONOSUPPORT;
321
322 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
323 return -EPROTONOSUPPORT;
324 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
325
326 ip_proto = ip->protocol;
327 src_ip = ip->saddr;
328 dst_ip = ip->daddr;
329 src_port = ports[0];
330 dst_port = ports[1];
331
332 spin_lock_bh(&priv->filters_lock);
333 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
334 src_port, dst_port);
335 if (filter) {
336 if (filter->rxq_index == rxq_index)
337 goto out;
338
339 filter->rxq_index = rxq_index;
340 } else {
341 filter = mlx4_en_filter_alloc(priv, rxq_index,
342 src_ip, dst_ip, ip_proto,
343 src_port, dst_port, flow_id);
344 if (!filter) {
345 ret = -ENOMEM;
346 goto err;
347 }
348 }
349
350 queue_work(priv->mdev->workqueue, &filter->work);
351
352 out:
353 ret = filter->id;
354 err:
355 spin_unlock_bh(&priv->filters_lock);
356
357 return ret;
358 }
359
360 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
361 {
362 struct mlx4_en_filter *filter, *tmp;
363 LIST_HEAD(del_list);
364
365 spin_lock_bh(&priv->filters_lock);
366 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
367 list_move(&filter->next, &del_list);
368 hlist_del(&filter->filter_chain);
369 }
370 spin_unlock_bh(&priv->filters_lock);
371
372 list_for_each_entry_safe(filter, tmp, &del_list, next) {
373 cancel_work_sync(&filter->work);
374 mlx4_en_filter_free(filter);
375 }
376 }
377
378 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
379 {
380 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
381 LIST_HEAD(del_list);
382 int i = 0;
383
384 spin_lock_bh(&priv->filters_lock);
385 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
386 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
387 break;
388
389 if (filter->activated &&
390 !work_pending(&filter->work) &&
391 rps_may_expire_flow(priv->dev,
392 filter->rxq_index, filter->flow_id,
393 filter->id)) {
394 list_move(&filter->next, &del_list);
395 hlist_del(&filter->filter_chain);
396 } else
397 last_filter = filter;
398
399 i++;
400 }
401
402 if (last_filter && (&last_filter->next != priv->filters.next))
403 list_move(&priv->filters, &last_filter->next);
404
405 spin_unlock_bh(&priv->filters_lock);
406
407 list_for_each_entry_safe(filter, tmp, &del_list, next)
408 mlx4_en_filter_free(filter);
409 }
410 #endif
411
412 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
413 __be16 proto, u16 vid)
414 {
415 struct mlx4_en_priv *priv = netdev_priv(dev);
416 struct mlx4_en_dev *mdev = priv->mdev;
417 int err;
418 int idx;
419
420 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
421
422 set_bit(vid, priv->active_vlans);
423
424 /* Add VID to port VLAN filter */
425 mutex_lock(&mdev->state_lock);
426 if (mdev->device_up && priv->port_up) {
427 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
428 if (err) {
429 en_err(priv, "Failed configuring VLAN filter\n");
430 goto out;
431 }
432 }
433 err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
434 if (err)
435 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
436
437 out:
438 mutex_unlock(&mdev->state_lock);
439 return err;
440 }
441
442 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
443 __be16 proto, u16 vid)
444 {
445 struct mlx4_en_priv *priv = netdev_priv(dev);
446 struct mlx4_en_dev *mdev = priv->mdev;
447 int err = 0;
448
449 en_dbg(HW, priv, "Killing VID:%d\n", vid);
450
451 clear_bit(vid, priv->active_vlans);
452
453 /* Remove VID from port VLAN filter */
454 mutex_lock(&mdev->state_lock);
455 mlx4_unregister_vlan(mdev->dev, priv->port, vid);
456
457 if (mdev->device_up && priv->port_up) {
458 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
459 if (err)
460 en_err(priv, "Failed configuring VLAN filter\n");
461 }
462 mutex_unlock(&mdev->state_lock);
463
464 return err;
465 }
466
467 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
468 {
469 int i;
470 for (i = ETH_ALEN - 1; i >= 0; --i) {
471 dst_mac[i] = src_mac & 0xff;
472 src_mac >>= 8;
473 }
474 memset(&dst_mac[ETH_ALEN], 0, 2);
475 }
476
477
478 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
479 int qpn, u64 *reg_id)
480 {
481 int err;
482
483 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
484 priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
485 return 0; /* do nothing */
486
487 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
488 MLX4_DOMAIN_NIC, reg_id);
489 if (err) {
490 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
491 return err;
492 }
493 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
494 return 0;
495 }
496
497
498 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
499 unsigned char *mac, int *qpn, u64 *reg_id)
500 {
501 struct mlx4_en_dev *mdev = priv->mdev;
502 struct mlx4_dev *dev = mdev->dev;
503 int err;
504
505 switch (dev->caps.steering_mode) {
506 case MLX4_STEERING_MODE_B0: {
507 struct mlx4_qp qp;
508 u8 gid[16] = {0};
509
510 qp.qpn = *qpn;
511 memcpy(&gid[10], mac, ETH_ALEN);
512 gid[5] = priv->port;
513
514 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
515 break;
516 }
517 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
518 struct mlx4_spec_list spec_eth = { {NULL} };
519 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
520
521 struct mlx4_net_trans_rule rule = {
522 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
523 .exclusive = 0,
524 .allow_loopback = 1,
525 .promisc_mode = MLX4_FS_REGULAR,
526 .priority = MLX4_DOMAIN_NIC,
527 };
528
529 rule.port = priv->port;
530 rule.qpn = *qpn;
531 INIT_LIST_HEAD(&rule.list);
532
533 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
534 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
535 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
536 list_add_tail(&spec_eth.list, &rule.list);
537
538 err = mlx4_flow_attach(dev, &rule, reg_id);
539 break;
540 }
541 default:
542 return -EINVAL;
543 }
544 if (err)
545 en_warn(priv, "Failed Attaching Unicast\n");
546
547 return err;
548 }
549
550 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
551 unsigned char *mac, int qpn, u64 reg_id)
552 {
553 struct mlx4_en_dev *mdev = priv->mdev;
554 struct mlx4_dev *dev = mdev->dev;
555
556 switch (dev->caps.steering_mode) {
557 case MLX4_STEERING_MODE_B0: {
558 struct mlx4_qp qp;
559 u8 gid[16] = {0};
560
561 qp.qpn = qpn;
562 memcpy(&gid[10], mac, ETH_ALEN);
563 gid[5] = priv->port;
564
565 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
566 break;
567 }
568 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
569 mlx4_flow_detach(dev, reg_id);
570 break;
571 }
572 default:
573 en_err(priv, "Invalid steering mode.\n");
574 }
575 }
576
577 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
578 {
579 struct mlx4_en_dev *mdev = priv->mdev;
580 struct mlx4_dev *dev = mdev->dev;
581 int index = 0;
582 int err = 0;
583 int *qpn = &priv->base_qpn;
584 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
585
586 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
587 priv->dev->dev_addr);
588 index = mlx4_register_mac(dev, priv->port, mac);
589 if (index < 0) {
590 err = index;
591 en_err(priv, "Failed adding MAC: %pM\n",
592 priv->dev->dev_addr);
593 return err;
594 }
595
596 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
597 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
598 *qpn = base_qpn + index;
599 return 0;
600 }
601
602 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
603 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
604 if (err) {
605 en_err(priv, "Failed to reserve qp for mac registration\n");
606 mlx4_unregister_mac(dev, priv->port, mac);
607 return err;
608 }
609
610 return 0;
611 }
612
613 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
614 {
615 struct mlx4_en_dev *mdev = priv->mdev;
616 struct mlx4_dev *dev = mdev->dev;
617 int qpn = priv->base_qpn;
618
619 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
620 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
621 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
622 priv->dev->dev_addr);
623 mlx4_unregister_mac(dev, priv->port, mac);
624 } else {
625 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
626 priv->port, qpn);
627 mlx4_qp_release_range(dev, qpn, 1);
628 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
629 }
630 }
631
632 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
633 unsigned char *new_mac, unsigned char *prev_mac)
634 {
635 struct mlx4_en_dev *mdev = priv->mdev;
636 struct mlx4_dev *dev = mdev->dev;
637 int err = 0;
638 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
639
640 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
641 struct hlist_head *bucket;
642 unsigned int mac_hash;
643 struct mlx4_mac_entry *entry;
644 struct hlist_node *tmp;
645 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
646
647 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
648 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
649 if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
650 mlx4_en_uc_steer_release(priv, entry->mac,
651 qpn, entry->reg_id);
652 mlx4_unregister_mac(dev, priv->port,
653 prev_mac_u64);
654 hlist_del_rcu(&entry->hlist);
655 synchronize_rcu();
656 memcpy(entry->mac, new_mac, ETH_ALEN);
657 entry->reg_id = 0;
658 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
659 hlist_add_head_rcu(&entry->hlist,
660 &priv->mac_hash[mac_hash]);
661 mlx4_register_mac(dev, priv->port, new_mac_u64);
662 err = mlx4_en_uc_steer_add(priv, new_mac,
663 &qpn,
664 &entry->reg_id);
665 if (err)
666 return err;
667 if (priv->tunnel_reg_id) {
668 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
669 priv->tunnel_reg_id = 0;
670 }
671 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
672 &priv->tunnel_reg_id);
673 return err;
674 }
675 }
676 return -EINVAL;
677 }
678
679 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
680 }
681
682 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
683 unsigned char new_mac[ETH_ALEN + 2])
684 {
685 int err = 0;
686
687 if (priv->port_up) {
688 /* Remove old MAC and insert the new one */
689 err = mlx4_en_replace_mac(priv, priv->base_qpn,
690 new_mac, priv->current_mac);
691 if (err)
692 en_err(priv, "Failed changing HW MAC address\n");
693 } else
694 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
695
696 if (!err)
697 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
698
699 return err;
700 }
701
702 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
703 {
704 struct mlx4_en_priv *priv = netdev_priv(dev);
705 struct mlx4_en_dev *mdev = priv->mdev;
706 struct sockaddr *saddr = addr;
707 unsigned char new_mac[ETH_ALEN + 2];
708 int err;
709
710 if (!is_valid_ether_addr(saddr->sa_data))
711 return -EADDRNOTAVAIL;
712
713 mutex_lock(&mdev->state_lock);
714 memcpy(new_mac, saddr->sa_data, ETH_ALEN);
715 err = mlx4_en_do_set_mac(priv, new_mac);
716 if (!err)
717 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
718 mutex_unlock(&mdev->state_lock);
719
720 return err;
721 }
722
723 static void mlx4_en_clear_list(struct net_device *dev)
724 {
725 struct mlx4_en_priv *priv = netdev_priv(dev);
726 struct mlx4_en_mc_list *tmp, *mc_to_del;
727
728 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
729 list_del(&mc_to_del->list);
730 kfree(mc_to_del);
731 }
732 }
733
734 static void mlx4_en_cache_mclist(struct net_device *dev)
735 {
736 struct mlx4_en_priv *priv = netdev_priv(dev);
737 struct netdev_hw_addr *ha;
738 struct mlx4_en_mc_list *tmp;
739
740 mlx4_en_clear_list(dev);
741 netdev_for_each_mc_addr(ha, dev) {
742 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
743 if (!tmp) {
744 mlx4_en_clear_list(dev);
745 return;
746 }
747 memcpy(tmp->addr, ha->addr, ETH_ALEN);
748 list_add_tail(&tmp->list, &priv->mc_list);
749 }
750 }
751
752 static void update_mclist_flags(struct mlx4_en_priv *priv,
753 struct list_head *dst,
754 struct list_head *src)
755 {
756 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
757 bool found;
758
759 /* Find all the entries that should be removed from dst,
760 * These are the entries that are not found in src
761 */
762 list_for_each_entry(dst_tmp, dst, list) {
763 found = false;
764 list_for_each_entry(src_tmp, src, list) {
765 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
766 found = true;
767 break;
768 }
769 }
770 if (!found)
771 dst_tmp->action = MCLIST_REM;
772 }
773
774 /* Add entries that exist in src but not in dst
775 * mark them as need to add
776 */
777 list_for_each_entry(src_tmp, src, list) {
778 found = false;
779 list_for_each_entry(dst_tmp, dst, list) {
780 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
781 dst_tmp->action = MCLIST_NONE;
782 found = true;
783 break;
784 }
785 }
786 if (!found) {
787 new_mc = kmemdup(src_tmp,
788 sizeof(struct mlx4_en_mc_list),
789 GFP_KERNEL);
790 if (!new_mc)
791 return;
792
793 new_mc->action = MCLIST_ADD;
794 list_add_tail(&new_mc->list, dst);
795 }
796 }
797 }
798
799 static void mlx4_en_set_rx_mode(struct net_device *dev)
800 {
801 struct mlx4_en_priv *priv = netdev_priv(dev);
802
803 if (!priv->port_up)
804 return;
805
806 queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
807 }
808
809 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
810 struct mlx4_en_dev *mdev)
811 {
812 int err = 0;
813
814 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
815 if (netif_msg_rx_status(priv))
816 en_warn(priv, "Entering promiscuous mode\n");
817 priv->flags |= MLX4_EN_FLAG_PROMISC;
818
819 /* Enable promiscouos mode */
820 switch (mdev->dev->caps.steering_mode) {
821 case MLX4_STEERING_MODE_DEVICE_MANAGED:
822 err = mlx4_flow_steer_promisc_add(mdev->dev,
823 priv->port,
824 priv->base_qpn,
825 MLX4_FS_ALL_DEFAULT);
826 if (err)
827 en_err(priv, "Failed enabling promiscuous mode\n");
828 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
829 break;
830
831 case MLX4_STEERING_MODE_B0:
832 err = mlx4_unicast_promisc_add(mdev->dev,
833 priv->base_qpn,
834 priv->port);
835 if (err)
836 en_err(priv, "Failed enabling unicast promiscuous mode\n");
837
838 /* Add the default qp number as multicast
839 * promisc
840 */
841 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
842 err = mlx4_multicast_promisc_add(mdev->dev,
843 priv->base_qpn,
844 priv->port);
845 if (err)
846 en_err(priv, "Failed enabling multicast promiscuous mode\n");
847 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
848 }
849 break;
850
851 case MLX4_STEERING_MODE_A0:
852 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
853 priv->port,
854 priv->base_qpn,
855 1);
856 if (err)
857 en_err(priv, "Failed enabling promiscuous mode\n");
858 break;
859 }
860
861 /* Disable port multicast filter (unconditionally) */
862 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
863 0, MLX4_MCAST_DISABLE);
864 if (err)
865 en_err(priv, "Failed disabling multicast filter\n");
866 }
867 }
868
869 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
870 struct mlx4_en_dev *mdev)
871 {
872 int err = 0;
873
874 if (netif_msg_rx_status(priv))
875 en_warn(priv, "Leaving promiscuous mode\n");
876 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
877
878 /* Disable promiscouos mode */
879 switch (mdev->dev->caps.steering_mode) {
880 case MLX4_STEERING_MODE_DEVICE_MANAGED:
881 err = mlx4_flow_steer_promisc_remove(mdev->dev,
882 priv->port,
883 MLX4_FS_ALL_DEFAULT);
884 if (err)
885 en_err(priv, "Failed disabling promiscuous mode\n");
886 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
887 break;
888
889 case MLX4_STEERING_MODE_B0:
890 err = mlx4_unicast_promisc_remove(mdev->dev,
891 priv->base_qpn,
892 priv->port);
893 if (err)
894 en_err(priv, "Failed disabling unicast promiscuous mode\n");
895 /* Disable Multicast promisc */
896 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
897 err = mlx4_multicast_promisc_remove(mdev->dev,
898 priv->base_qpn,
899 priv->port);
900 if (err)
901 en_err(priv, "Failed disabling multicast promiscuous mode\n");
902 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
903 }
904 break;
905
906 case MLX4_STEERING_MODE_A0:
907 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
908 priv->port,
909 priv->base_qpn, 0);
910 if (err)
911 en_err(priv, "Failed disabling promiscuous mode\n");
912 break;
913 }
914 }
915
916 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
917 struct net_device *dev,
918 struct mlx4_en_dev *mdev)
919 {
920 struct mlx4_en_mc_list *mclist, *tmp;
921 u64 mcast_addr = 0;
922 u8 mc_list[16] = {0};
923 int err = 0;
924
925 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
926 if (dev->flags & IFF_ALLMULTI) {
927 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
928 0, MLX4_MCAST_DISABLE);
929 if (err)
930 en_err(priv, "Failed disabling multicast filter\n");
931
932 /* Add the default qp number as multicast promisc */
933 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
934 switch (mdev->dev->caps.steering_mode) {
935 case MLX4_STEERING_MODE_DEVICE_MANAGED:
936 err = mlx4_flow_steer_promisc_add(mdev->dev,
937 priv->port,
938 priv->base_qpn,
939 MLX4_FS_MC_DEFAULT);
940 break;
941
942 case MLX4_STEERING_MODE_B0:
943 err = mlx4_multicast_promisc_add(mdev->dev,
944 priv->base_qpn,
945 priv->port);
946 break;
947
948 case MLX4_STEERING_MODE_A0:
949 break;
950 }
951 if (err)
952 en_err(priv, "Failed entering multicast promisc mode\n");
953 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
954 }
955 } else {
956 /* Disable Multicast promisc */
957 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
958 switch (mdev->dev->caps.steering_mode) {
959 case MLX4_STEERING_MODE_DEVICE_MANAGED:
960 err = mlx4_flow_steer_promisc_remove(mdev->dev,
961 priv->port,
962 MLX4_FS_MC_DEFAULT);
963 break;
964
965 case MLX4_STEERING_MODE_B0:
966 err = mlx4_multicast_promisc_remove(mdev->dev,
967 priv->base_qpn,
968 priv->port);
969 break;
970
971 case MLX4_STEERING_MODE_A0:
972 break;
973 }
974 if (err)
975 en_err(priv, "Failed disabling multicast promiscuous mode\n");
976 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
977 }
978
979 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
980 0, MLX4_MCAST_DISABLE);
981 if (err)
982 en_err(priv, "Failed disabling multicast filter\n");
983
984 /* Flush mcast filter and init it with broadcast address */
985 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
986 1, MLX4_MCAST_CONFIG);
987
988 /* Update multicast list - we cache all addresses so they won't
989 * change while HW is updated holding the command semaphor */
990 netif_addr_lock_bh(dev);
991 mlx4_en_cache_mclist(dev);
992 netif_addr_unlock_bh(dev);
993 list_for_each_entry(mclist, &priv->mc_list, list) {
994 mcast_addr = mlx4_mac_to_u64(mclist->addr);
995 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
996 mcast_addr, 0, MLX4_MCAST_CONFIG);
997 }
998 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
999 0, MLX4_MCAST_ENABLE);
1000 if (err)
1001 en_err(priv, "Failed enabling multicast filter\n");
1002
1003 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1004 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1005 if (mclist->action == MCLIST_REM) {
1006 /* detach this address and delete from list */
1007 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1008 mc_list[5] = priv->port;
1009 err = mlx4_multicast_detach(mdev->dev,
1010 &priv->rss_map.indir_qp,
1011 mc_list,
1012 MLX4_PROT_ETH,
1013 mclist->reg_id);
1014 if (err)
1015 en_err(priv, "Fail to detach multicast address\n");
1016
1017 if (mclist->tunnel_reg_id) {
1018 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1019 if (err)
1020 en_err(priv, "Failed to detach multicast address\n");
1021 }
1022
1023 /* remove from list */
1024 list_del(&mclist->list);
1025 kfree(mclist);
1026 } else if (mclist->action == MCLIST_ADD) {
1027 /* attach the address */
1028 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1029 /* needed for B0 steering support */
1030 mc_list[5] = priv->port;
1031 err = mlx4_multicast_attach(mdev->dev,
1032 &priv->rss_map.indir_qp,
1033 mc_list,
1034 priv->port, 0,
1035 MLX4_PROT_ETH,
1036 &mclist->reg_id);
1037 if (err)
1038 en_err(priv, "Fail to attach multicast address\n");
1039
1040 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1041 &mclist->tunnel_reg_id);
1042 if (err)
1043 en_err(priv, "Failed to attach multicast address\n");
1044 }
1045 }
1046 }
1047 }
1048
1049 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1050 struct net_device *dev,
1051 struct mlx4_en_dev *mdev)
1052 {
1053 struct netdev_hw_addr *ha;
1054 struct mlx4_mac_entry *entry;
1055 struct hlist_node *tmp;
1056 bool found;
1057 u64 mac;
1058 int err = 0;
1059 struct hlist_head *bucket;
1060 unsigned int i;
1061 int removed = 0;
1062 u32 prev_flags;
1063
1064 /* Note that we do not need to protect our mac_hash traversal with rcu,
1065 * since all modification code is protected by mdev->state_lock
1066 */
1067
1068 /* find what to remove */
1069 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1070 bucket = &priv->mac_hash[i];
1071 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1072 found = false;
1073 netdev_for_each_uc_addr(ha, dev) {
1074 if (ether_addr_equal_64bits(entry->mac,
1075 ha->addr)) {
1076 found = true;
1077 break;
1078 }
1079 }
1080
1081 /* MAC address of the port is not in uc list */
1082 if (ether_addr_equal_64bits(entry->mac,
1083 priv->current_mac))
1084 found = true;
1085
1086 if (!found) {
1087 mac = mlx4_mac_to_u64(entry->mac);
1088 mlx4_en_uc_steer_release(priv, entry->mac,
1089 priv->base_qpn,
1090 entry->reg_id);
1091 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1092
1093 hlist_del_rcu(&entry->hlist);
1094 kfree_rcu(entry, rcu);
1095 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1096 entry->mac, priv->port);
1097 ++removed;
1098 }
1099 }
1100 }
1101
1102 /* if we didn't remove anything, there is no use in trying to add
1103 * again once we are in a forced promisc mode state
1104 */
1105 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1106 return;
1107
1108 prev_flags = priv->flags;
1109 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1110
1111 /* find what to add */
1112 netdev_for_each_uc_addr(ha, dev) {
1113 found = false;
1114 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1115 hlist_for_each_entry(entry, bucket, hlist) {
1116 if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1117 found = true;
1118 break;
1119 }
1120 }
1121
1122 if (!found) {
1123 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1124 if (!entry) {
1125 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1126 ha->addr, priv->port);
1127 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1128 break;
1129 }
1130 mac = mlx4_mac_to_u64(ha->addr);
1131 memcpy(entry->mac, ha->addr, ETH_ALEN);
1132 err = mlx4_register_mac(mdev->dev, priv->port, mac);
1133 if (err < 0) {
1134 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1135 ha->addr, priv->port, err);
1136 kfree(entry);
1137 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1138 break;
1139 }
1140 err = mlx4_en_uc_steer_add(priv, ha->addr,
1141 &priv->base_qpn,
1142 &entry->reg_id);
1143 if (err) {
1144 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1145 ha->addr, priv->port, err);
1146 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1147 kfree(entry);
1148 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1149 break;
1150 } else {
1151 unsigned int mac_hash;
1152 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1153 ha->addr, priv->port);
1154 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1155 bucket = &priv->mac_hash[mac_hash];
1156 hlist_add_head_rcu(&entry->hlist, bucket);
1157 }
1158 }
1159 }
1160
1161 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1162 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1163 priv->port);
1164 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1165 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1166 priv->port);
1167 }
1168 }
1169
1170 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1171 {
1172 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1173 rx_mode_task);
1174 struct mlx4_en_dev *mdev = priv->mdev;
1175 struct net_device *dev = priv->dev;
1176
1177 mutex_lock(&mdev->state_lock);
1178 if (!mdev->device_up) {
1179 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1180 goto out;
1181 }
1182 if (!priv->port_up) {
1183 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1184 goto out;
1185 }
1186
1187 if (!netif_carrier_ok(dev)) {
1188 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1189 if (priv->port_state.link_state) {
1190 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1191 netif_carrier_on(dev);
1192 en_dbg(LINK, priv, "Link Up\n");
1193 }
1194 }
1195 }
1196
1197 if (dev->priv_flags & IFF_UNICAST_FLT)
1198 mlx4_en_do_uc_filter(priv, dev, mdev);
1199
1200 /* Promsicuous mode: disable all filters */
1201 if ((dev->flags & IFF_PROMISC) ||
1202 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1203 mlx4_en_set_promisc_mode(priv, mdev);
1204 goto out;
1205 }
1206
1207 /* Not in promiscuous mode */
1208 if (priv->flags & MLX4_EN_FLAG_PROMISC)
1209 mlx4_en_clear_promisc_mode(priv, mdev);
1210
1211 mlx4_en_do_multicast(priv, dev, mdev);
1212 out:
1213 mutex_unlock(&mdev->state_lock);
1214 }
1215
1216 #ifdef CONFIG_NET_POLL_CONTROLLER
1217 static void mlx4_en_netpoll(struct net_device *dev)
1218 {
1219 struct mlx4_en_priv *priv = netdev_priv(dev);
1220 struct mlx4_en_cq *cq;
1221 int i;
1222
1223 for (i = 0; i < priv->tx_ring_num[TX]; i++) {
1224 cq = priv->tx_cq[TX][i];
1225 napi_schedule(&cq->napi);
1226 }
1227 }
1228 #endif
1229
1230 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1231 {
1232 u64 reg_id;
1233 int err = 0;
1234 int *qpn = &priv->base_qpn;
1235 struct mlx4_mac_entry *entry;
1236
1237 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1238 if (err)
1239 return err;
1240
1241 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1242 &priv->tunnel_reg_id);
1243 if (err)
1244 goto tunnel_err;
1245
1246 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1247 if (!entry) {
1248 err = -ENOMEM;
1249 goto alloc_err;
1250 }
1251
1252 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1253 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1254 entry->reg_id = reg_id;
1255 hlist_add_head_rcu(&entry->hlist,
1256 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1257
1258 return 0;
1259
1260 alloc_err:
1261 if (priv->tunnel_reg_id)
1262 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1263
1264 tunnel_err:
1265 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1266 return err;
1267 }
1268
1269 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1270 {
1271 u64 mac;
1272 unsigned int i;
1273 int qpn = priv->base_qpn;
1274 struct hlist_head *bucket;
1275 struct hlist_node *tmp;
1276 struct mlx4_mac_entry *entry;
1277
1278 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1279 bucket = &priv->mac_hash[i];
1280 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1281 mac = mlx4_mac_to_u64(entry->mac);
1282 en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1283 entry->mac);
1284 mlx4_en_uc_steer_release(priv, entry->mac,
1285 qpn, entry->reg_id);
1286
1287 mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1288 hlist_del_rcu(&entry->hlist);
1289 kfree_rcu(entry, rcu);
1290 }
1291 }
1292
1293 if (priv->tunnel_reg_id) {
1294 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1295 priv->tunnel_reg_id = 0;
1296 }
1297 }
1298
1299 static void mlx4_en_tx_timeout(struct net_device *dev)
1300 {
1301 struct mlx4_en_priv *priv = netdev_priv(dev);
1302 struct mlx4_en_dev *mdev = priv->mdev;
1303 int i;
1304
1305 if (netif_msg_timer(priv))
1306 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1307
1308 for (i = 0; i < priv->tx_ring_num[TX]; i++) {
1309 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][i];
1310
1311 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1312 continue;
1313 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1314 i, tx_ring->qpn, tx_ring->sp_cqn,
1315 tx_ring->cons, tx_ring->prod);
1316 }
1317
1318 priv->port_stats.tx_timeout++;
1319 en_dbg(DRV, priv, "Scheduling watchdog\n");
1320 queue_work(mdev->workqueue, &priv->watchdog_task);
1321 }
1322
1323
1324 static void
1325 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1326 {
1327 struct mlx4_en_priv *priv = netdev_priv(dev);
1328
1329 spin_lock_bh(&priv->stats_lock);
1330 mlx4_en_fold_software_stats(dev);
1331 netdev_stats_to_stats64(stats, &dev->stats);
1332 spin_unlock_bh(&priv->stats_lock);
1333 }
1334
1335 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1336 {
1337 struct mlx4_en_cq *cq;
1338 int i, t;
1339
1340 /* If we haven't received a specific coalescing setting
1341 * (module param), we set the moderation parameters as follows:
1342 * - moder_cnt is set to the number of mtu sized packets to
1343 * satisfy our coalescing target.
1344 * - moder_time is set to a fixed value.
1345 */
1346 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1347 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1348 priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1349 priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1350 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1351 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1352
1353 /* Setup cq moderation params */
1354 for (i = 0; i < priv->rx_ring_num; i++) {
1355 cq = priv->rx_cq[i];
1356 cq->moder_cnt = priv->rx_frames;
1357 cq->moder_time = priv->rx_usecs;
1358 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1359 priv->last_moder_packets[i] = 0;
1360 priv->last_moder_bytes[i] = 0;
1361 }
1362
1363 for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1364 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1365 cq = priv->tx_cq[t][i];
1366 cq->moder_cnt = priv->tx_frames;
1367 cq->moder_time = priv->tx_usecs;
1368 }
1369 }
1370
1371 /* Reset auto-moderation params */
1372 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1373 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1374 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1375 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1376 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1377 priv->adaptive_rx_coal = 1;
1378 priv->last_moder_jiffies = 0;
1379 priv->last_moder_tx_packets = 0;
1380 }
1381
1382 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1383 {
1384 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1385 struct mlx4_en_cq *cq;
1386 unsigned long packets;
1387 unsigned long rate;
1388 unsigned long avg_pkt_size;
1389 unsigned long rx_packets;
1390 unsigned long rx_bytes;
1391 unsigned long rx_pkt_diff;
1392 int moder_time;
1393 int ring, err;
1394
1395 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1396 return;
1397
1398 for (ring = 0; ring < priv->rx_ring_num; ring++) {
1399 rx_packets = READ_ONCE(priv->rx_ring[ring]->packets);
1400 rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes);
1401
1402 rx_pkt_diff = ((unsigned long) (rx_packets -
1403 priv->last_moder_packets[ring]));
1404 packets = rx_pkt_diff;
1405 rate = packets * HZ / period;
1406 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1407 priv->last_moder_bytes[ring])) / packets : 0;
1408
1409 /* Apply auto-moderation only when packet rate
1410 * exceeds a rate that it matters */
1411 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1412 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1413 if (rate < priv->pkt_rate_low)
1414 moder_time = priv->rx_usecs_low;
1415 else if (rate > priv->pkt_rate_high)
1416 moder_time = priv->rx_usecs_high;
1417 else
1418 moder_time = (rate - priv->pkt_rate_low) *
1419 (priv->rx_usecs_high - priv->rx_usecs_low) /
1420 (priv->pkt_rate_high - priv->pkt_rate_low) +
1421 priv->rx_usecs_low;
1422 } else {
1423 moder_time = priv->rx_usecs_low;
1424 }
1425
1426 if (moder_time != priv->last_moder_time[ring]) {
1427 priv->last_moder_time[ring] = moder_time;
1428 cq = priv->rx_cq[ring];
1429 cq->moder_time = moder_time;
1430 cq->moder_cnt = priv->rx_frames;
1431 err = mlx4_en_set_cq_moder(priv, cq);
1432 if (err)
1433 en_err(priv, "Failed modifying moderation for cq:%d\n",
1434 ring);
1435 }
1436 priv->last_moder_packets[ring] = rx_packets;
1437 priv->last_moder_bytes[ring] = rx_bytes;
1438 }
1439
1440 priv->last_moder_jiffies = jiffies;
1441 }
1442
1443 static void mlx4_en_do_get_stats(struct work_struct *work)
1444 {
1445 struct delayed_work *delay = to_delayed_work(work);
1446 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1447 stats_task);
1448 struct mlx4_en_dev *mdev = priv->mdev;
1449 int err;
1450
1451 mutex_lock(&mdev->state_lock);
1452 if (mdev->device_up) {
1453 if (priv->port_up) {
1454 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1455 if (err)
1456 en_dbg(HW, priv, "Could not update stats\n");
1457
1458 mlx4_en_auto_moderation(priv);
1459 }
1460
1461 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1462 }
1463 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1464 mlx4_en_do_set_mac(priv, priv->current_mac);
1465 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1466 }
1467 mutex_unlock(&mdev->state_lock);
1468 }
1469
1470 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1471 * periodically
1472 */
1473 static void mlx4_en_service_task(struct work_struct *work)
1474 {
1475 struct delayed_work *delay = to_delayed_work(work);
1476 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1477 service_task);
1478 struct mlx4_en_dev *mdev = priv->mdev;
1479
1480 mutex_lock(&mdev->state_lock);
1481 if (mdev->device_up) {
1482 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1483 mlx4_en_ptp_overflow_check(mdev);
1484
1485 mlx4_en_recover_from_oom(priv);
1486 queue_delayed_work(mdev->workqueue, &priv->service_task,
1487 SERVICE_TASK_DELAY);
1488 }
1489 mutex_unlock(&mdev->state_lock);
1490 }
1491
1492 static void mlx4_en_linkstate(struct work_struct *work)
1493 {
1494 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1495 linkstate_task);
1496 struct mlx4_en_dev *mdev = priv->mdev;
1497 int linkstate = priv->link_state;
1498
1499 mutex_lock(&mdev->state_lock);
1500 /* If observable port state changed set carrier state and
1501 * report to system log */
1502 if (priv->last_link_state != linkstate) {
1503 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1504 en_info(priv, "Link Down\n");
1505 netif_carrier_off(priv->dev);
1506 } else {
1507 en_info(priv, "Link Up\n");
1508 netif_carrier_on(priv->dev);
1509 }
1510 }
1511 priv->last_link_state = linkstate;
1512 mutex_unlock(&mdev->state_lock);
1513 }
1514
1515 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1516 {
1517 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1518 int numa_node = priv->mdev->dev->numa_node;
1519
1520 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1521 return -ENOMEM;
1522
1523 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1524 ring->affinity_mask);
1525 return 0;
1526 }
1527
1528 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1529 {
1530 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1531 }
1532
1533 static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1534 int tx_ring_idx)
1535 {
1536 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx];
1537 int rr_index = tx_ring_idx;
1538
1539 tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1540 tx_ring->recycle_ring = priv->rx_ring[rr_index];
1541 en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n",
1542 TX_XDP, tx_ring_idx, rr_index);
1543 }
1544
1545 int mlx4_en_start_port(struct net_device *dev)
1546 {
1547 struct mlx4_en_priv *priv = netdev_priv(dev);
1548 struct mlx4_en_dev *mdev = priv->mdev;
1549 struct mlx4_en_cq *cq;
1550 struct mlx4_en_tx_ring *tx_ring;
1551 int rx_index = 0;
1552 int err = 0;
1553 int i, t;
1554 int j;
1555 u8 mc_list[16] = {0};
1556
1557 if (priv->port_up) {
1558 en_dbg(DRV, priv, "start port called while port already up\n");
1559 return 0;
1560 }
1561
1562 INIT_LIST_HEAD(&priv->mc_list);
1563 INIT_LIST_HEAD(&priv->curr_list);
1564 INIT_LIST_HEAD(&priv->ethtool_list);
1565 memset(&priv->ethtool_rules[0], 0,
1566 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1567
1568 /* Calculate Rx buf size */
1569 dev->mtu = min(dev->mtu, priv->max_mtu);
1570 mlx4_en_calc_rx_buf(dev);
1571 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1572
1573 /* Configure rx cq's and rings */
1574 err = mlx4_en_activate_rx_rings(priv);
1575 if (err) {
1576 en_err(priv, "Failed to activate RX rings\n");
1577 return err;
1578 }
1579 for (i = 0; i < priv->rx_ring_num; i++) {
1580 cq = priv->rx_cq[i];
1581
1582 err = mlx4_en_init_affinity_hint(priv, i);
1583 if (err) {
1584 en_err(priv, "Failed preparing IRQ affinity hint\n");
1585 goto cq_err;
1586 }
1587
1588 err = mlx4_en_activate_cq(priv, cq, i);
1589 if (err) {
1590 en_err(priv, "Failed activating Rx CQ\n");
1591 mlx4_en_free_affinity_hint(priv, i);
1592 goto cq_err;
1593 }
1594
1595 for (j = 0; j < cq->size; j++) {
1596 struct mlx4_cqe *cqe = NULL;
1597
1598 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1599 priv->cqe_factor;
1600 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1601 }
1602
1603 err = mlx4_en_set_cq_moder(priv, cq);
1604 if (err) {
1605 en_err(priv, "Failed setting cq moderation parameters\n");
1606 mlx4_en_deactivate_cq(priv, cq);
1607 mlx4_en_free_affinity_hint(priv, i);
1608 goto cq_err;
1609 }
1610 mlx4_en_arm_cq(priv, cq);
1611 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1612 ++rx_index;
1613 }
1614
1615 /* Set qp number */
1616 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1617 err = mlx4_en_get_qp(priv);
1618 if (err) {
1619 en_err(priv, "Failed getting eth qp\n");
1620 goto cq_err;
1621 }
1622 mdev->mac_removed[priv->port] = 0;
1623
1624 priv->counter_index =
1625 mlx4_get_default_counter_index(mdev->dev, priv->port);
1626
1627 err = mlx4_en_config_rss_steer(priv);
1628 if (err) {
1629 en_err(priv, "Failed configuring rss steering\n");
1630 goto mac_err;
1631 }
1632
1633 err = mlx4_en_create_drop_qp(priv);
1634 if (err)
1635 goto rss_err;
1636
1637 /* Configure tx cq's and rings */
1638 for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1639 u8 num_tx_rings_p_up = t == TX ?
1640 priv->num_tx_rings_p_up : priv->tx_ring_num[t];
1641
1642 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1643 /* Configure cq */
1644 cq = priv->tx_cq[t][i];
1645 err = mlx4_en_activate_cq(priv, cq, i);
1646 if (err) {
1647 en_err(priv, "Failed allocating Tx CQ\n");
1648 goto tx_err;
1649 }
1650 err = mlx4_en_set_cq_moder(priv, cq);
1651 if (err) {
1652 en_err(priv, "Failed setting cq moderation parameters\n");
1653 mlx4_en_deactivate_cq(priv, cq);
1654 goto tx_err;
1655 }
1656 en_dbg(DRV, priv,
1657 "Resetting index of collapsed CQ:%d to -1\n", i);
1658 cq->buf->wqe_index = cpu_to_be16(0xffff);
1659
1660 /* Configure ring */
1661 tx_ring = priv->tx_ring[t][i];
1662 err = mlx4_en_activate_tx_ring(priv, tx_ring,
1663 cq->mcq.cqn,
1664 i / num_tx_rings_p_up);
1665 if (err) {
1666 en_err(priv, "Failed allocating Tx ring\n");
1667 mlx4_en_deactivate_cq(priv, cq);
1668 goto tx_err;
1669 }
1670 if (t != TX_XDP) {
1671 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1672 tx_ring->recycle_ring = NULL;
1673 } else {
1674 mlx4_en_init_recycle_ring(priv, i);
1675 }
1676
1677 /* Arm CQ for TX completions */
1678 mlx4_en_arm_cq(priv, cq);
1679
1680 /* Set initial ownership of all Tx TXBBs to SW (1) */
1681 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1682 *((u32 *)(tx_ring->buf + j)) = 0xffffffff;
1683 }
1684 }
1685
1686 /* Configure port */
1687 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1688 priv->rx_skb_size + ETH_FCS_LEN,
1689 priv->prof->tx_pause,
1690 priv->prof->tx_ppp,
1691 priv->prof->rx_pause,
1692 priv->prof->rx_ppp);
1693 if (err) {
1694 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1695 priv->port, err);
1696 goto tx_err;
1697 }
1698 /* Set default qp number */
1699 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1700 if (err) {
1701 en_err(priv, "Failed setting default qp numbers\n");
1702 goto tx_err;
1703 }
1704
1705 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1706 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1707 if (err) {
1708 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1709 err);
1710 goto tx_err;
1711 }
1712 }
1713
1714 /* Init port */
1715 en_dbg(HW, priv, "Initializing port\n");
1716 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1717 if (err) {
1718 en_err(priv, "Failed Initializing port\n");
1719 goto tx_err;
1720 }
1721
1722 /* Set Unicast and VXLAN steering rules */
1723 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1724 mlx4_en_set_rss_steer_rules(priv))
1725 mlx4_warn(mdev, "Failed setting steering rules\n");
1726
1727 /* Attach rx QP to bradcast address */
1728 eth_broadcast_addr(&mc_list[10]);
1729 mc_list[5] = priv->port; /* needed for B0 steering support */
1730 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1731 priv->port, 0, MLX4_PROT_ETH,
1732 &priv->broadcast_id))
1733 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1734
1735 /* Must redo promiscuous mode setup. */
1736 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1737
1738 /* Schedule multicast task to populate multicast list */
1739 queue_work(mdev->workqueue, &priv->rx_mode_task);
1740
1741 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1742 udp_tunnel_get_rx_info(dev);
1743
1744 priv->port_up = true;
1745
1746 /* Process all completions if exist to prevent
1747 * the queues freezing if they are full
1748 */
1749 for (i = 0; i < priv->rx_ring_num; i++) {
1750 local_bh_disable();
1751 napi_schedule(&priv->rx_cq[i]->napi);
1752 local_bh_enable();
1753 }
1754
1755 netif_tx_start_all_queues(dev);
1756 netif_device_attach(dev);
1757
1758 return 0;
1759
1760 tx_err:
1761 if (t == MLX4_EN_NUM_TX_TYPES) {
1762 t--;
1763 i = priv->tx_ring_num[t];
1764 }
1765 while (t >= 0) {
1766 while (i--) {
1767 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1768 mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1769 }
1770 if (!t--)
1771 break;
1772 i = priv->tx_ring_num[t];
1773 }
1774 mlx4_en_destroy_drop_qp(priv);
1775 rss_err:
1776 mlx4_en_release_rss_steer(priv);
1777 mac_err:
1778 mlx4_en_put_qp(priv);
1779 cq_err:
1780 while (rx_index--) {
1781 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1782 mlx4_en_free_affinity_hint(priv, rx_index);
1783 }
1784 for (i = 0; i < priv->rx_ring_num; i++)
1785 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1786
1787 return err; /* need to close devices */
1788 }
1789
1790
1791 void mlx4_en_stop_port(struct net_device *dev, int detach)
1792 {
1793 struct mlx4_en_priv *priv = netdev_priv(dev);
1794 struct mlx4_en_dev *mdev = priv->mdev;
1795 struct mlx4_en_mc_list *mclist, *tmp;
1796 struct ethtool_flow_id *flow, *tmp_flow;
1797 int i, t;
1798 u8 mc_list[16] = {0};
1799
1800 if (!priv->port_up) {
1801 en_dbg(DRV, priv, "stop port called while port already down\n");
1802 return;
1803 }
1804
1805 /* close port*/
1806 mlx4_CLOSE_PORT(mdev->dev, priv->port);
1807
1808 /* Synchronize with tx routine */
1809 netif_tx_lock_bh(dev);
1810 if (detach)
1811 netif_device_detach(dev);
1812 netif_tx_stop_all_queues(dev);
1813 netif_tx_unlock_bh(dev);
1814
1815 netif_tx_disable(dev);
1816
1817 spin_lock_bh(&priv->stats_lock);
1818 mlx4_en_fold_software_stats(dev);
1819 /* Set port as not active */
1820 priv->port_up = false;
1821 spin_unlock_bh(&priv->stats_lock);
1822
1823 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1824
1825 /* Promsicuous mode */
1826 if (mdev->dev->caps.steering_mode ==
1827 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1828 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1829 MLX4_EN_FLAG_MC_PROMISC);
1830 mlx4_flow_steer_promisc_remove(mdev->dev,
1831 priv->port,
1832 MLX4_FS_ALL_DEFAULT);
1833 mlx4_flow_steer_promisc_remove(mdev->dev,
1834 priv->port,
1835 MLX4_FS_MC_DEFAULT);
1836 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1837 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1838
1839 /* Disable promiscouos mode */
1840 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1841 priv->port);
1842
1843 /* Disable Multicast promisc */
1844 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1845 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1846 priv->port);
1847 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1848 }
1849 }
1850
1851 /* Detach All multicasts */
1852 eth_broadcast_addr(&mc_list[10]);
1853 mc_list[5] = priv->port; /* needed for B0 steering support */
1854 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1855 MLX4_PROT_ETH, priv->broadcast_id);
1856 list_for_each_entry(mclist, &priv->curr_list, list) {
1857 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1858 mc_list[5] = priv->port;
1859 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1860 mc_list, MLX4_PROT_ETH, mclist->reg_id);
1861 if (mclist->tunnel_reg_id)
1862 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1863 }
1864 mlx4_en_clear_list(dev);
1865 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1866 list_del(&mclist->list);
1867 kfree(mclist);
1868 }
1869
1870 /* Flush multicast filter */
1871 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1872
1873 /* Remove flow steering rules for the port*/
1874 if (mdev->dev->caps.steering_mode ==
1875 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1876 ASSERT_RTNL();
1877 list_for_each_entry_safe(flow, tmp_flow,
1878 &priv->ethtool_list, list) {
1879 mlx4_flow_detach(mdev->dev, flow->id);
1880 list_del(&flow->list);
1881 }
1882 }
1883
1884 mlx4_en_destroy_drop_qp(priv);
1885
1886 /* Free TX Rings */
1887 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
1888 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1889 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1890 mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1891 }
1892 }
1893 msleep(10);
1894
1895 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++)
1896 for (i = 0; i < priv->tx_ring_num[t]; i++)
1897 mlx4_en_free_tx_buf(dev, priv->tx_ring[t][i]);
1898
1899 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1900 mlx4_en_delete_rss_steer_rules(priv);
1901
1902 /* Free RSS qps */
1903 mlx4_en_release_rss_steer(priv);
1904
1905 /* Unregister Mac address for the port */
1906 mlx4_en_put_qp(priv);
1907 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1908 mdev->mac_removed[priv->port] = 1;
1909
1910 /* Free RX Rings */
1911 for (i = 0; i < priv->rx_ring_num; i++) {
1912 struct mlx4_en_cq *cq = priv->rx_cq[i];
1913
1914 napi_synchronize(&cq->napi);
1915 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1916 mlx4_en_deactivate_cq(priv, cq);
1917
1918 mlx4_en_free_affinity_hint(priv, i);
1919 }
1920 }
1921
1922 static void mlx4_en_restart(struct work_struct *work)
1923 {
1924 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1925 watchdog_task);
1926 struct mlx4_en_dev *mdev = priv->mdev;
1927 struct net_device *dev = priv->dev;
1928
1929 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1930
1931 rtnl_lock();
1932 mutex_lock(&mdev->state_lock);
1933 if (priv->port_up) {
1934 mlx4_en_stop_port(dev, 1);
1935 if (mlx4_en_start_port(dev))
1936 en_err(priv, "Failed restarting port %d\n", priv->port);
1937 }
1938 mutex_unlock(&mdev->state_lock);
1939 rtnl_unlock();
1940 }
1941
1942 static void mlx4_en_clear_stats(struct net_device *dev)
1943 {
1944 struct mlx4_en_priv *priv = netdev_priv(dev);
1945 struct mlx4_en_dev *mdev = priv->mdev;
1946 struct mlx4_en_tx_ring **tx_ring;
1947 int i;
1948
1949 if (!mlx4_is_slave(mdev->dev))
1950 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1951 en_dbg(HW, priv, "Failed dumping statistics\n");
1952
1953 memset(&priv->pstats, 0, sizeof(priv->pstats));
1954 memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1955 memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1956 memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
1957 memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
1958 memset(&priv->rx_priority_flowstats, 0,
1959 sizeof(priv->rx_priority_flowstats));
1960 memset(&priv->tx_priority_flowstats, 0,
1961 sizeof(priv->tx_priority_flowstats));
1962 memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
1963
1964 tx_ring = priv->tx_ring[TX];
1965 for (i = 0; i < priv->tx_ring_num[TX]; i++) {
1966 tx_ring[i]->bytes = 0;
1967 tx_ring[i]->packets = 0;
1968 tx_ring[i]->tx_csum = 0;
1969 tx_ring[i]->tx_dropped = 0;
1970 tx_ring[i]->queue_stopped = 0;
1971 tx_ring[i]->wake_queue = 0;
1972 tx_ring[i]->tso_packets = 0;
1973 tx_ring[i]->xmit_more = 0;
1974 }
1975 for (i = 0; i < priv->rx_ring_num; i++) {
1976 priv->rx_ring[i]->bytes = 0;
1977 priv->rx_ring[i]->packets = 0;
1978 priv->rx_ring[i]->csum_ok = 0;
1979 priv->rx_ring[i]->csum_none = 0;
1980 priv->rx_ring[i]->csum_complete = 0;
1981 }
1982 }
1983
1984 static int mlx4_en_open(struct net_device *dev)
1985 {
1986 struct mlx4_en_priv *priv = netdev_priv(dev);
1987 struct mlx4_en_dev *mdev = priv->mdev;
1988 int err = 0;
1989
1990 mutex_lock(&mdev->state_lock);
1991
1992 if (!mdev->device_up) {
1993 en_err(priv, "Cannot open - device down/disabled\n");
1994 err = -EBUSY;
1995 goto out;
1996 }
1997
1998 /* Reset HW statistics and SW counters */
1999 mlx4_en_clear_stats(dev);
2000
2001 err = mlx4_en_start_port(dev);
2002 if (err)
2003 en_err(priv, "Failed starting port:%d\n", priv->port);
2004
2005 out:
2006 mutex_unlock(&mdev->state_lock);
2007 return err;
2008 }
2009
2010
2011 static int mlx4_en_close(struct net_device *dev)
2012 {
2013 struct mlx4_en_priv *priv = netdev_priv(dev);
2014 struct mlx4_en_dev *mdev = priv->mdev;
2015
2016 en_dbg(IFDOWN, priv, "Close port called\n");
2017
2018 mutex_lock(&mdev->state_lock);
2019
2020 mlx4_en_stop_port(dev, 0);
2021 netif_carrier_off(dev);
2022
2023 mutex_unlock(&mdev->state_lock);
2024 return 0;
2025 }
2026
2027 static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
2028 {
2029 int i, t;
2030
2031 #ifdef CONFIG_RFS_ACCEL
2032 priv->dev->rx_cpu_rmap = NULL;
2033 #endif
2034
2035 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2036 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2037 if (priv->tx_ring[t] && priv->tx_ring[t][i])
2038 mlx4_en_destroy_tx_ring(priv,
2039 &priv->tx_ring[t][i]);
2040 if (priv->tx_cq[t] && priv->tx_cq[t][i])
2041 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2042 }
2043 }
2044
2045 for (i = 0; i < priv->rx_ring_num; i++) {
2046 if (priv->rx_ring[i])
2047 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2048 priv->prof->rx_ring_size, priv->stride);
2049 if (priv->rx_cq[i])
2050 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2051 }
2052
2053 }
2054
2055 static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2056 {
2057 struct mlx4_en_port_profile *prof = priv->prof;
2058 int i, t;
2059 int node;
2060
2061 /* Create tx Rings */
2062 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2063 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2064 node = cpu_to_node(i % num_online_cpus());
2065 if (mlx4_en_create_cq(priv, &priv->tx_cq[t][i],
2066 prof->tx_ring_size, i, t, node))
2067 goto err;
2068
2069 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[t][i],
2070 prof->tx_ring_size,
2071 TXBB_SIZE, node, i))
2072 goto err;
2073 }
2074 }
2075
2076 /* Create rx Rings */
2077 for (i = 0; i < priv->rx_ring_num; i++) {
2078 node = cpu_to_node(i % num_online_cpus());
2079 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2080 prof->rx_ring_size, i, RX, node))
2081 goto err;
2082
2083 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2084 prof->rx_ring_size, priv->stride,
2085 node))
2086 goto err;
2087 }
2088
2089 #ifdef CONFIG_RFS_ACCEL
2090 priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2091 #endif
2092
2093 return 0;
2094
2095 err:
2096 en_err(priv, "Failed to allocate NIC resources\n");
2097 for (i = 0; i < priv->rx_ring_num; i++) {
2098 if (priv->rx_ring[i])
2099 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2100 prof->rx_ring_size,
2101 priv->stride);
2102 if (priv->rx_cq[i])
2103 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2104 }
2105 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2106 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2107 if (priv->tx_ring[t][i])
2108 mlx4_en_destroy_tx_ring(priv,
2109 &priv->tx_ring[t][i]);
2110 if (priv->tx_cq[t][i])
2111 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2112 }
2113 }
2114 return -ENOMEM;
2115 }
2116
2117
2118 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2119 struct mlx4_en_priv *src,
2120 struct mlx4_en_port_profile *prof)
2121 {
2122 int t;
2123
2124 memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2125 sizeof(dst->hwtstamp_config));
2126 dst->num_tx_rings_p_up = src->mdev->profile.num_tx_rings_p_up;
2127 dst->rx_ring_num = prof->rx_ring_num;
2128 dst->flags = prof->flags;
2129 dst->mdev = src->mdev;
2130 dst->port = src->port;
2131 dst->dev = src->dev;
2132 dst->prof = prof;
2133 dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2134 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2135
2136 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2137 dst->tx_ring_num[t] = prof->tx_ring_num[t];
2138 if (!dst->tx_ring_num[t])
2139 continue;
2140
2141 dst->tx_ring[t] = kzalloc(sizeof(struct mlx4_en_tx_ring *) *
2142 MAX_TX_RINGS, GFP_KERNEL);
2143 if (!dst->tx_ring[t])
2144 goto err_free_tx;
2145
2146 dst->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) *
2147 MAX_TX_RINGS, GFP_KERNEL);
2148 if (!dst->tx_cq[t]) {
2149 kfree(dst->tx_ring[t]);
2150 goto err_free_tx;
2151 }
2152 }
2153
2154 return 0;
2155
2156 err_free_tx:
2157 while (t--) {
2158 kfree(dst->tx_ring[t]);
2159 kfree(dst->tx_cq[t]);
2160 }
2161 return -ENOMEM;
2162 }
2163
2164 static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2165 struct mlx4_en_priv *src)
2166 {
2167 int t;
2168 memcpy(dst->rx_ring, src->rx_ring,
2169 sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2170 memcpy(dst->rx_cq, src->rx_cq,
2171 sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2172 memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2173 sizeof(dst->hwtstamp_config));
2174 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2175 dst->tx_ring_num[t] = src->tx_ring_num[t];
2176 dst->tx_ring[t] = src->tx_ring[t];
2177 dst->tx_cq[t] = src->tx_cq[t];
2178 }
2179 dst->rx_ring_num = src->rx_ring_num;
2180 memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2181 }
2182
2183 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2184 struct mlx4_en_priv *tmp,
2185 struct mlx4_en_port_profile *prof)
2186 {
2187 int t;
2188
2189 mlx4_en_copy_priv(tmp, priv, prof);
2190
2191 if (mlx4_en_alloc_resources(tmp)) {
2192 en_warn(priv,
2193 "%s: Resource allocation failed, using previous configuration\n",
2194 __func__);
2195 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2196 kfree(tmp->tx_ring[t]);
2197 kfree(tmp->tx_cq[t]);
2198 }
2199 return -ENOMEM;
2200 }
2201 return 0;
2202 }
2203
2204 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2205 struct mlx4_en_priv *tmp)
2206 {
2207 mlx4_en_free_resources(priv);
2208 mlx4_en_update_priv(priv, tmp);
2209 }
2210
2211 void mlx4_en_destroy_netdev(struct net_device *dev)
2212 {
2213 struct mlx4_en_priv *priv = netdev_priv(dev);
2214 struct mlx4_en_dev *mdev = priv->mdev;
2215 int t;
2216
2217 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2218
2219 /* Unregister device - this will close the port if it was up */
2220 if (priv->registered) {
2221 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2222 priv->port));
2223 unregister_netdev(dev);
2224 }
2225
2226 if (priv->allocated)
2227 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2228
2229 cancel_delayed_work(&priv->stats_task);
2230 cancel_delayed_work(&priv->service_task);
2231 /* flush any pending task for this netdev */
2232 flush_workqueue(mdev->workqueue);
2233
2234 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2235 mlx4_en_remove_timestamp(mdev);
2236
2237 /* Detach the netdev so tasks would not attempt to access it */
2238 mutex_lock(&mdev->state_lock);
2239 mdev->pndev[priv->port] = NULL;
2240 mdev->upper[priv->port] = NULL;
2241
2242 #ifdef CONFIG_RFS_ACCEL
2243 mlx4_en_cleanup_filters(priv);
2244 #endif
2245
2246 mlx4_en_free_resources(priv);
2247 mutex_unlock(&mdev->state_lock);
2248
2249 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2250 kfree(priv->tx_ring[t]);
2251 kfree(priv->tx_cq[t]);
2252 }
2253
2254 free_netdev(dev);
2255 }
2256
2257 static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu)
2258 {
2259 struct mlx4_en_priv *priv = netdev_priv(dev);
2260
2261 if (mtu > MLX4_EN_MAX_XDP_MTU) {
2262 en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n",
2263 mtu, MLX4_EN_MAX_XDP_MTU);
2264 return false;
2265 }
2266
2267 return true;
2268 }
2269
2270 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2271 {
2272 struct mlx4_en_priv *priv = netdev_priv(dev);
2273 struct mlx4_en_dev *mdev = priv->mdev;
2274 int err = 0;
2275
2276 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2277 dev->mtu, new_mtu);
2278
2279 if (priv->tx_ring_num[TX_XDP] &&
2280 !mlx4_en_check_xdp_mtu(dev, new_mtu))
2281 return -EOPNOTSUPP;
2282
2283 dev->mtu = new_mtu;
2284
2285 if (netif_running(dev)) {
2286 mutex_lock(&mdev->state_lock);
2287 if (!mdev->device_up) {
2288 /* NIC is probably restarting - let watchdog task reset
2289 * the port */
2290 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2291 } else {
2292 mlx4_en_stop_port(dev, 1);
2293 err = mlx4_en_start_port(dev);
2294 if (err) {
2295 en_err(priv, "Failed restarting port:%d\n",
2296 priv->port);
2297 queue_work(mdev->workqueue, &priv->watchdog_task);
2298 }
2299 }
2300 mutex_unlock(&mdev->state_lock);
2301 }
2302 return 0;
2303 }
2304
2305 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2306 {
2307 struct mlx4_en_priv *priv = netdev_priv(dev);
2308 struct mlx4_en_dev *mdev = priv->mdev;
2309 struct hwtstamp_config config;
2310
2311 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2312 return -EFAULT;
2313
2314 /* reserved for future extensions */
2315 if (config.flags)
2316 return -EINVAL;
2317
2318 /* device doesn't support time stamping */
2319 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2320 return -EINVAL;
2321
2322 /* TX HW timestamp */
2323 switch (config.tx_type) {
2324 case HWTSTAMP_TX_OFF:
2325 case HWTSTAMP_TX_ON:
2326 break;
2327 default:
2328 return -ERANGE;
2329 }
2330
2331 /* RX HW timestamp */
2332 switch (config.rx_filter) {
2333 case HWTSTAMP_FILTER_NONE:
2334 break;
2335 case HWTSTAMP_FILTER_ALL:
2336 case HWTSTAMP_FILTER_SOME:
2337 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2338 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2339 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2340 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2341 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2342 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2343 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2344 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2345 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2346 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2347 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2348 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2349 config.rx_filter = HWTSTAMP_FILTER_ALL;
2350 break;
2351 default:
2352 return -ERANGE;
2353 }
2354
2355 if (mlx4_en_reset_config(dev, config, dev->features)) {
2356 config.tx_type = HWTSTAMP_TX_OFF;
2357 config.rx_filter = HWTSTAMP_FILTER_NONE;
2358 }
2359
2360 return copy_to_user(ifr->ifr_data, &config,
2361 sizeof(config)) ? -EFAULT : 0;
2362 }
2363
2364 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2365 {
2366 struct mlx4_en_priv *priv = netdev_priv(dev);
2367
2368 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2369 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2370 }
2371
2372 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2373 {
2374 switch (cmd) {
2375 case SIOCSHWTSTAMP:
2376 return mlx4_en_hwtstamp_set(dev, ifr);
2377 case SIOCGHWTSTAMP:
2378 return mlx4_en_hwtstamp_get(dev, ifr);
2379 default:
2380 return -EOPNOTSUPP;
2381 }
2382 }
2383
2384 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2385 netdev_features_t features)
2386 {
2387 struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2388 struct mlx4_en_dev *mdev = en_priv->mdev;
2389
2390 /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2391 * enable/disable make sure S-TAG flag is always in same state as
2392 * C-TAG.
2393 */
2394 if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2395 !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2396 features |= NETIF_F_HW_VLAN_STAG_RX;
2397 else
2398 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2399
2400 return features;
2401 }
2402
2403 static int mlx4_en_set_features(struct net_device *netdev,
2404 netdev_features_t features)
2405 {
2406 struct mlx4_en_priv *priv = netdev_priv(netdev);
2407 bool reset = false;
2408 int ret = 0;
2409
2410 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2411 en_info(priv, "Turn %s RX-FCS\n",
2412 (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2413 reset = true;
2414 }
2415
2416 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2417 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2418
2419 en_info(priv, "Turn %s RX-ALL\n",
2420 ignore_fcs_value ? "ON" : "OFF");
2421 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2422 priv->port, ignore_fcs_value);
2423 if (ret)
2424 return ret;
2425 }
2426
2427 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2428 en_info(priv, "Turn %s RX vlan strip offload\n",
2429 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2430 reset = true;
2431 }
2432
2433 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2434 en_info(priv, "Turn %s TX vlan strip offload\n",
2435 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2436
2437 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2438 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2439 (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2440
2441 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2442 en_info(priv, "Turn %s loopback\n",
2443 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2444 mlx4_en_update_loopback_state(netdev, features);
2445 }
2446
2447 if (reset) {
2448 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2449 features);
2450 if (ret)
2451 return ret;
2452 }
2453
2454 return 0;
2455 }
2456
2457 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2458 {
2459 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2460 struct mlx4_en_dev *mdev = en_priv->mdev;
2461 u64 mac_u64 = mlx4_mac_to_u64(mac);
2462
2463 if (is_multicast_ether_addr(mac))
2464 return -EINVAL;
2465
2466 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2467 }
2468
2469 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
2470 __be16 vlan_proto)
2471 {
2472 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2473 struct mlx4_en_dev *mdev = en_priv->mdev;
2474
2475 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos,
2476 vlan_proto);
2477 }
2478
2479 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2480 int max_tx_rate)
2481 {
2482 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2483 struct mlx4_en_dev *mdev = en_priv->mdev;
2484
2485 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2486 max_tx_rate);
2487 }
2488
2489 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2490 {
2491 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2492 struct mlx4_en_dev *mdev = en_priv->mdev;
2493
2494 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2495 }
2496
2497 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2498 {
2499 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2500 struct mlx4_en_dev *mdev = en_priv->mdev;
2501
2502 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2503 }
2504
2505 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2506 {
2507 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2508 struct mlx4_en_dev *mdev = en_priv->mdev;
2509
2510 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2511 }
2512
2513 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2514 struct ifla_vf_stats *vf_stats)
2515 {
2516 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2517 struct mlx4_en_dev *mdev = en_priv->mdev;
2518
2519 return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2520 }
2521
2522 #define PORT_ID_BYTE_LEN 8
2523 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2524 struct netdev_phys_item_id *ppid)
2525 {
2526 struct mlx4_en_priv *priv = netdev_priv(dev);
2527 struct mlx4_dev *mdev = priv->mdev->dev;
2528 int i;
2529 u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2530
2531 if (!phys_port_id)
2532 return -EOPNOTSUPP;
2533
2534 ppid->id_len = sizeof(phys_port_id);
2535 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2536 ppid->id[i] = phys_port_id & 0xff;
2537 phys_port_id >>= 8;
2538 }
2539 return 0;
2540 }
2541
2542 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2543 {
2544 int ret;
2545 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2546 vxlan_add_task);
2547
2548 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2549 if (ret)
2550 goto out;
2551
2552 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2553 VXLAN_STEER_BY_OUTER_MAC, 1);
2554 out:
2555 if (ret) {
2556 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2557 return;
2558 }
2559
2560 /* set offloads */
2561 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2562 NETIF_F_RXCSUM |
2563 NETIF_F_TSO | NETIF_F_TSO6 |
2564 NETIF_F_GSO_UDP_TUNNEL |
2565 NETIF_F_GSO_UDP_TUNNEL_CSUM |
2566 NETIF_F_GSO_PARTIAL;
2567 }
2568
2569 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2570 {
2571 int ret;
2572 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2573 vxlan_del_task);
2574 /* unset offloads */
2575 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2576 NETIF_F_RXCSUM |
2577 NETIF_F_TSO | NETIF_F_TSO6 |
2578 NETIF_F_GSO_UDP_TUNNEL |
2579 NETIF_F_GSO_UDP_TUNNEL_CSUM |
2580 NETIF_F_GSO_PARTIAL);
2581
2582 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2583 VXLAN_STEER_BY_OUTER_MAC, 0);
2584 if (ret)
2585 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2586
2587 priv->vxlan_port = 0;
2588 }
2589
2590 static void mlx4_en_add_vxlan_port(struct net_device *dev,
2591 struct udp_tunnel_info *ti)
2592 {
2593 struct mlx4_en_priv *priv = netdev_priv(dev);
2594 __be16 port = ti->port;
2595 __be16 current_port;
2596
2597 if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2598 return;
2599
2600 if (ti->sa_family != AF_INET)
2601 return;
2602
2603 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2604 return;
2605
2606 current_port = priv->vxlan_port;
2607 if (current_port && current_port != port) {
2608 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2609 ntohs(current_port), ntohs(port));
2610 return;
2611 }
2612
2613 priv->vxlan_port = port;
2614 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2615 }
2616
2617 static void mlx4_en_del_vxlan_port(struct net_device *dev,
2618 struct udp_tunnel_info *ti)
2619 {
2620 struct mlx4_en_priv *priv = netdev_priv(dev);
2621 __be16 port = ti->port;
2622 __be16 current_port;
2623
2624 if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2625 return;
2626
2627 if (ti->sa_family != AF_INET)
2628 return;
2629
2630 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2631 return;
2632
2633 current_port = priv->vxlan_port;
2634 if (current_port != port) {
2635 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2636 return;
2637 }
2638
2639 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2640 }
2641
2642 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2643 struct net_device *dev,
2644 netdev_features_t features)
2645 {
2646 features = vlan_features_check(skb, features);
2647 features = vxlan_features_check(skb, features);
2648
2649 /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2650 * support inner IPv6 checksums and segmentation so we need to
2651 * strip that feature if this is an IPv6 encapsulated frame.
2652 */
2653 if (skb->encapsulation &&
2654 (skb->ip_summed == CHECKSUM_PARTIAL)) {
2655 struct mlx4_en_priv *priv = netdev_priv(dev);
2656
2657 if (!priv->vxlan_port ||
2658 (ip_hdr(skb)->version != 4) ||
2659 (udp_hdr(skb)->dest != priv->vxlan_port))
2660 features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2661 }
2662
2663 return features;
2664 }
2665
2666 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2667 {
2668 struct mlx4_en_priv *priv = netdev_priv(dev);
2669 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index];
2670 struct mlx4_update_qp_params params;
2671 int err;
2672
2673 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2674 return -EOPNOTSUPP;
2675
2676 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2677 if (maxrate >> 12) {
2678 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2679 params.rate_val = maxrate / 1000;
2680 } else if (maxrate) {
2681 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2682 params.rate_val = maxrate;
2683 } else { /* zero serves to revoke the QP rate-limitation */
2684 params.rate_unit = 0;
2685 params.rate_val = 0;
2686 }
2687
2688 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2689 &params);
2690 return err;
2691 }
2692
2693 static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2694 {
2695 struct mlx4_en_priv *priv = netdev_priv(dev);
2696 struct mlx4_en_dev *mdev = priv->mdev;
2697 struct mlx4_en_port_profile new_prof;
2698 struct bpf_prog *old_prog;
2699 struct mlx4_en_priv *tmp;
2700 int tx_changed = 0;
2701 int xdp_ring_num;
2702 int port_up = 0;
2703 int err;
2704 int i;
2705
2706 xdp_ring_num = prog ? priv->rx_ring_num : 0;
2707
2708 /* No need to reconfigure buffers when simply swapping the
2709 * program for a new one.
2710 */
2711 if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) {
2712 if (prog) {
2713 prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2714 if (IS_ERR(prog))
2715 return PTR_ERR(prog);
2716 }
2717 mutex_lock(&mdev->state_lock);
2718 for (i = 0; i < priv->rx_ring_num; i++) {
2719 old_prog = rcu_dereference_protected(
2720 priv->rx_ring[i]->xdp_prog,
2721 lockdep_is_held(&mdev->state_lock));
2722 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2723 if (old_prog)
2724 bpf_prog_put(old_prog);
2725 }
2726 mutex_unlock(&mdev->state_lock);
2727 return 0;
2728 }
2729
2730 if (!mlx4_en_check_xdp_mtu(dev, dev->mtu))
2731 return -EOPNOTSUPP;
2732
2733 tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
2734 if (!tmp)
2735 return -ENOMEM;
2736
2737 if (prog) {
2738 prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2739 if (IS_ERR(prog)) {
2740 err = PTR_ERR(prog);
2741 goto out;
2742 }
2743 }
2744
2745 mutex_lock(&mdev->state_lock);
2746 memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
2747 new_prof.tx_ring_num[TX_XDP] = xdp_ring_num;
2748
2749 if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) {
2750 tx_changed = 1;
2751 new_prof.tx_ring_num[TX] =
2752 MAX_TX_RINGS - ALIGN(xdp_ring_num, MLX4_EN_NUM_UP);
2753 en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n");
2754 }
2755
2756 err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof);
2757 if (err) {
2758 if (prog)
2759 bpf_prog_sub(prog, priv->rx_ring_num - 1);
2760 goto unlock_out;
2761 }
2762
2763 if (priv->port_up) {
2764 port_up = 1;
2765 mlx4_en_stop_port(dev, 1);
2766 }
2767
2768 mlx4_en_safe_replace_resources(priv, tmp);
2769 if (tx_changed)
2770 netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
2771
2772 for (i = 0; i < priv->rx_ring_num; i++) {
2773 old_prog = rcu_dereference_protected(
2774 priv->rx_ring[i]->xdp_prog,
2775 lockdep_is_held(&mdev->state_lock));
2776 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2777 if (old_prog)
2778 bpf_prog_put(old_prog);
2779 }
2780
2781 if (port_up) {
2782 err = mlx4_en_start_port(dev);
2783 if (err) {
2784 en_err(priv, "Failed starting port %d for XDP change\n",
2785 priv->port);
2786 queue_work(mdev->workqueue, &priv->watchdog_task);
2787 }
2788 }
2789
2790 unlock_out:
2791 mutex_unlock(&mdev->state_lock);
2792 out:
2793 kfree(tmp);
2794 return err;
2795 }
2796
2797 static bool mlx4_xdp_attached(struct net_device *dev)
2798 {
2799 struct mlx4_en_priv *priv = netdev_priv(dev);
2800
2801 return !!priv->tx_ring_num[TX_XDP];
2802 }
2803
2804 static int mlx4_xdp(struct net_device *dev, struct netdev_xdp *xdp)
2805 {
2806 switch (xdp->command) {
2807 case XDP_SETUP_PROG:
2808 return mlx4_xdp_set(dev, xdp->prog);
2809 case XDP_QUERY_PROG:
2810 xdp->prog_attached = mlx4_xdp_attached(dev);
2811 return 0;
2812 default:
2813 return -EINVAL;
2814 }
2815 }
2816
2817 static const struct net_device_ops mlx4_netdev_ops = {
2818 .ndo_open = mlx4_en_open,
2819 .ndo_stop = mlx4_en_close,
2820 .ndo_start_xmit = mlx4_en_xmit,
2821 .ndo_select_queue = mlx4_en_select_queue,
2822 .ndo_get_stats64 = mlx4_en_get_stats64,
2823 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2824 .ndo_set_mac_address = mlx4_en_set_mac,
2825 .ndo_validate_addr = eth_validate_addr,
2826 .ndo_change_mtu = mlx4_en_change_mtu,
2827 .ndo_do_ioctl = mlx4_en_ioctl,
2828 .ndo_tx_timeout = mlx4_en_tx_timeout,
2829 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2830 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2831 #ifdef CONFIG_NET_POLL_CONTROLLER
2832 .ndo_poll_controller = mlx4_en_netpoll,
2833 #endif
2834 .ndo_set_features = mlx4_en_set_features,
2835 .ndo_fix_features = mlx4_en_fix_features,
2836 .ndo_setup_tc = __mlx4_en_setup_tc,
2837 #ifdef CONFIG_RFS_ACCEL
2838 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2839 #endif
2840 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2841 .ndo_udp_tunnel_add = mlx4_en_add_vxlan_port,
2842 .ndo_udp_tunnel_del = mlx4_en_del_vxlan_port,
2843 .ndo_features_check = mlx4_en_features_check,
2844 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
2845 .ndo_xdp = mlx4_xdp,
2846 };
2847
2848 static const struct net_device_ops mlx4_netdev_ops_master = {
2849 .ndo_open = mlx4_en_open,
2850 .ndo_stop = mlx4_en_close,
2851 .ndo_start_xmit = mlx4_en_xmit,
2852 .ndo_select_queue = mlx4_en_select_queue,
2853 .ndo_get_stats64 = mlx4_en_get_stats64,
2854 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2855 .ndo_set_mac_address = mlx4_en_set_mac,
2856 .ndo_validate_addr = eth_validate_addr,
2857 .ndo_change_mtu = mlx4_en_change_mtu,
2858 .ndo_tx_timeout = mlx4_en_tx_timeout,
2859 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2860 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2861 .ndo_set_vf_mac = mlx4_en_set_vf_mac,
2862 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2863 .ndo_set_vf_rate = mlx4_en_set_vf_rate,
2864 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2865 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2866 .ndo_get_vf_stats = mlx4_en_get_vf_stats,
2867 .ndo_get_vf_config = mlx4_en_get_vf_config,
2868 #ifdef CONFIG_NET_POLL_CONTROLLER
2869 .ndo_poll_controller = mlx4_en_netpoll,
2870 #endif
2871 .ndo_set_features = mlx4_en_set_features,
2872 .ndo_fix_features = mlx4_en_fix_features,
2873 .ndo_setup_tc = __mlx4_en_setup_tc,
2874 #ifdef CONFIG_RFS_ACCEL
2875 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2876 #endif
2877 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2878 .ndo_udp_tunnel_add = mlx4_en_add_vxlan_port,
2879 .ndo_udp_tunnel_del = mlx4_en_del_vxlan_port,
2880 .ndo_features_check = mlx4_en_features_check,
2881 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
2882 .ndo_xdp = mlx4_xdp,
2883 };
2884
2885 struct mlx4_en_bond {
2886 struct work_struct work;
2887 struct mlx4_en_priv *priv;
2888 int is_bonded;
2889 struct mlx4_port_map port_map;
2890 };
2891
2892 static void mlx4_en_bond_work(struct work_struct *work)
2893 {
2894 struct mlx4_en_bond *bond = container_of(work,
2895 struct mlx4_en_bond,
2896 work);
2897 int err = 0;
2898 struct mlx4_dev *dev = bond->priv->mdev->dev;
2899
2900 if (bond->is_bonded) {
2901 if (!mlx4_is_bonded(dev)) {
2902 err = mlx4_bond(dev);
2903 if (err)
2904 en_err(bond->priv, "Fail to bond device\n");
2905 }
2906 if (!err) {
2907 err = mlx4_port_map_set(dev, &bond->port_map);
2908 if (err)
2909 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2910 bond->port_map.port1,
2911 bond->port_map.port2,
2912 err);
2913 }
2914 } else if (mlx4_is_bonded(dev)) {
2915 err = mlx4_unbond(dev);
2916 if (err)
2917 en_err(bond->priv, "Fail to unbond device\n");
2918 }
2919 dev_put(bond->priv->dev);
2920 kfree(bond);
2921 }
2922
2923 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2924 u8 v2p_p1, u8 v2p_p2)
2925 {
2926 struct mlx4_en_bond *bond = NULL;
2927
2928 bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2929 if (!bond)
2930 return -ENOMEM;
2931
2932 INIT_WORK(&bond->work, mlx4_en_bond_work);
2933 bond->priv = priv;
2934 bond->is_bonded = is_bonded;
2935 bond->port_map.port1 = v2p_p1;
2936 bond->port_map.port2 = v2p_p2;
2937 dev_hold(priv->dev);
2938 queue_work(priv->mdev->workqueue, &bond->work);
2939 return 0;
2940 }
2941
2942 int mlx4_en_netdev_event(struct notifier_block *this,
2943 unsigned long event, void *ptr)
2944 {
2945 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2946 u8 port = 0;
2947 struct mlx4_en_dev *mdev;
2948 struct mlx4_dev *dev;
2949 int i, num_eth_ports = 0;
2950 bool do_bond = true;
2951 struct mlx4_en_priv *priv;
2952 u8 v2p_port1 = 0;
2953 u8 v2p_port2 = 0;
2954
2955 if (!net_eq(dev_net(ndev), &init_net))
2956 return NOTIFY_DONE;
2957
2958 mdev = container_of(this, struct mlx4_en_dev, nb);
2959 dev = mdev->dev;
2960
2961 /* Go into this mode only when two network devices set on two ports
2962 * of the same mlx4 device are slaves of the same bonding master
2963 */
2964 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2965 ++num_eth_ports;
2966 if (!port && (mdev->pndev[i] == ndev))
2967 port = i;
2968 mdev->upper[i] = mdev->pndev[i] ?
2969 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2970 /* condition not met: network device is a slave */
2971 if (!mdev->upper[i])
2972 do_bond = false;
2973 if (num_eth_ports < 2)
2974 continue;
2975 /* condition not met: same master */
2976 if (mdev->upper[i] != mdev->upper[i-1])
2977 do_bond = false;
2978 }
2979 /* condition not met: 2 salves */
2980 do_bond = (num_eth_ports == 2) ? do_bond : false;
2981
2982 /* handle only events that come with enough info */
2983 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2984 return NOTIFY_DONE;
2985
2986 priv = netdev_priv(ndev);
2987 if (do_bond) {
2988 struct netdev_notifier_bonding_info *notifier_info = ptr;
2989 struct netdev_bonding_info *bonding_info =
2990 &notifier_info->bonding_info;
2991
2992 /* required mode 1, 2 or 4 */
2993 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2994 (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2995 (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2996 do_bond = false;
2997
2998 /* require exactly 2 slaves */
2999 if (bonding_info->master.num_slaves != 2)
3000 do_bond = false;
3001
3002 /* calc v2p */
3003 if (do_bond) {
3004 if (bonding_info->master.bond_mode ==
3005 BOND_MODE_ACTIVEBACKUP) {
3006 /* in active-backup mode virtual ports are
3007 * mapped to the physical port of the active
3008 * slave */
3009 if (bonding_info->slave.state ==
3010 BOND_STATE_BACKUP) {
3011 if (port == 1) {
3012 v2p_port1 = 2;
3013 v2p_port2 = 2;
3014 } else {
3015 v2p_port1 = 1;
3016 v2p_port2 = 1;
3017 }
3018 } else { /* BOND_STATE_ACTIVE */
3019 if (port == 1) {
3020 v2p_port1 = 1;
3021 v2p_port2 = 1;
3022 } else {
3023 v2p_port1 = 2;
3024 v2p_port2 = 2;
3025 }
3026 }
3027 } else { /* Active-Active */
3028 /* in active-active mode a virtual port is
3029 * mapped to the native physical port if and only
3030 * if the physical port is up */
3031 __s8 link = bonding_info->slave.link;
3032
3033 if (port == 1)
3034 v2p_port2 = 2;
3035 else
3036 v2p_port1 = 1;
3037 if ((link == BOND_LINK_UP) ||
3038 (link == BOND_LINK_FAIL)) {
3039 if (port == 1)
3040 v2p_port1 = 1;
3041 else
3042 v2p_port2 = 2;
3043 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
3044 if (port == 1)
3045 v2p_port1 = 2;
3046 else
3047 v2p_port2 = 1;
3048 }
3049 }
3050 }
3051 }
3052
3053 mlx4_en_queue_bond_work(priv, do_bond,
3054 v2p_port1, v2p_port2);
3055
3056 return NOTIFY_DONE;
3057 }
3058
3059 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
3060 struct mlx4_en_stats_bitmap *stats_bitmap,
3061 u8 rx_ppp, u8 rx_pause,
3062 u8 tx_ppp, u8 tx_pause)
3063 {
3064 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
3065
3066 if (!mlx4_is_slave(dev) &&
3067 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
3068 mutex_lock(&stats_bitmap->mutex);
3069 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
3070
3071 if (rx_ppp)
3072 bitmap_set(stats_bitmap->bitmap, last_i,
3073 NUM_FLOW_PRIORITY_STATS_RX);
3074 last_i += NUM_FLOW_PRIORITY_STATS_RX;
3075
3076 if (rx_pause && !(rx_ppp))
3077 bitmap_set(stats_bitmap->bitmap, last_i,
3078 NUM_FLOW_STATS_RX);
3079 last_i += NUM_FLOW_STATS_RX;
3080
3081 if (tx_ppp)
3082 bitmap_set(stats_bitmap->bitmap, last_i,
3083 NUM_FLOW_PRIORITY_STATS_TX);
3084 last_i += NUM_FLOW_PRIORITY_STATS_TX;
3085
3086 if (tx_pause && !(tx_ppp))
3087 bitmap_set(stats_bitmap->bitmap, last_i,
3088 NUM_FLOW_STATS_TX);
3089 last_i += NUM_FLOW_STATS_TX;
3090
3091 mutex_unlock(&stats_bitmap->mutex);
3092 }
3093 }
3094
3095 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3096 struct mlx4_en_stats_bitmap *stats_bitmap,
3097 u8 rx_ppp, u8 rx_pause,
3098 u8 tx_ppp, u8 tx_pause)
3099 {
3100 int last_i = 0;
3101
3102 mutex_init(&stats_bitmap->mutex);
3103 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
3104
3105 if (mlx4_is_slave(dev)) {
3106 bitmap_set(stats_bitmap->bitmap, last_i +
3107 MLX4_FIND_NETDEV_STAT(rx_packets), 1);
3108 bitmap_set(stats_bitmap->bitmap, last_i +
3109 MLX4_FIND_NETDEV_STAT(tx_packets), 1);
3110 bitmap_set(stats_bitmap->bitmap, last_i +
3111 MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
3112 bitmap_set(stats_bitmap->bitmap, last_i +
3113 MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
3114 bitmap_set(stats_bitmap->bitmap, last_i +
3115 MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
3116 bitmap_set(stats_bitmap->bitmap, last_i +
3117 MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
3118 } else {
3119 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
3120 }
3121 last_i += NUM_MAIN_STATS;
3122
3123 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
3124 last_i += NUM_PORT_STATS;
3125
3126 if (mlx4_is_master(dev))
3127 bitmap_set(stats_bitmap->bitmap, last_i,
3128 NUM_PF_STATS);
3129 last_i += NUM_PF_STATS;
3130
3131 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3132 rx_ppp, rx_pause,
3133 tx_ppp, tx_pause);
3134 last_i += NUM_FLOW_STATS;
3135
3136 if (!mlx4_is_slave(dev))
3137 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
3138 last_i += NUM_PKT_STATS;
3139
3140 bitmap_set(stats_bitmap->bitmap, last_i, NUM_XDP_STATS);
3141 last_i += NUM_XDP_STATS;
3142 }
3143
3144 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3145 struct mlx4_en_port_profile *prof)
3146 {
3147 struct net_device *dev;
3148 struct mlx4_en_priv *priv;
3149 int i, t;
3150 int err;
3151
3152 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
3153 MAX_TX_RINGS, MAX_RX_RINGS);
3154 if (dev == NULL)
3155 return -ENOMEM;
3156
3157 netif_set_real_num_tx_queues(dev, prof->tx_ring_num[TX]);
3158 netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
3159
3160 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3161 dev->dev_port = port - 1;
3162
3163 /*
3164 * Initialize driver private data
3165 */
3166
3167 priv = netdev_priv(dev);
3168 memset(priv, 0, sizeof(struct mlx4_en_priv));
3169 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3170 spin_lock_init(&priv->stats_lock);
3171 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3172 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
3173 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
3174 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3175 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3176 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
3177 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
3178 #ifdef CONFIG_RFS_ACCEL
3179 INIT_LIST_HEAD(&priv->filters);
3180 spin_lock_init(&priv->filters_lock);
3181 #endif
3182
3183 priv->dev = dev;
3184 priv->mdev = mdev;
3185 priv->ddev = &mdev->pdev->dev;
3186 priv->prof = prof;
3187 priv->port = port;
3188 priv->port_up = false;
3189 priv->flags = prof->flags;
3190 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3191 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3192 MLX4_WQE_CTRL_SOLICITED);
3193 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
3194 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3195 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
3196
3197 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
3198 priv->tx_ring_num[t] = prof->tx_ring_num[t];
3199 if (!priv->tx_ring_num[t])
3200 continue;
3201
3202 priv->tx_ring[t] = kzalloc(sizeof(struct mlx4_en_tx_ring *) *
3203 MAX_TX_RINGS, GFP_KERNEL);
3204 if (!priv->tx_ring[t]) {
3205 err = -ENOMEM;
3206 goto err_free_tx;
3207 }
3208 priv->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) *
3209 MAX_TX_RINGS, GFP_KERNEL);
3210 if (!priv->tx_cq[t]) {
3211 kfree(priv->tx_ring[t]);
3212 err = -ENOMEM;
3213 goto out;
3214 }
3215 }
3216 priv->rx_ring_num = prof->rx_ring_num;
3217 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3218 priv->cqe_size = mdev->dev->caps.cqe_size;
3219 priv->mac_index = -1;
3220 priv->msg_enable = MLX4_EN_MSG_LEVEL;
3221 #ifdef CONFIG_MLX4_EN_DCB
3222 if (!mlx4_is_slave(priv->mdev->dev)) {
3223 priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3224 DCB_CAP_DCBX_VER_IEEE;
3225 priv->flags |= MLX4_EN_DCB_ENABLED;
3226 priv->cee_config.pfc_state = false;
3227
3228 for (i = 0; i < MLX4_EN_NUM_UP; i++)
3229 priv->cee_config.dcb_pfc[i] = pfc_disabled;
3230
3231 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3232 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3233 } else {
3234 en_info(priv, "enabling only PFC DCB ops\n");
3235 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3236 }
3237 }
3238 #endif
3239
3240 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3241 INIT_HLIST_HEAD(&priv->mac_hash[i]);
3242
3243 /* Query for default mac and max mtu */
3244 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3245
3246 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3247 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3248 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3249
3250 /* Set default MAC */
3251 dev->addr_len = ETH_ALEN;
3252 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
3253 if (!is_valid_ether_addr(dev->dev_addr)) {
3254 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
3255 priv->port, dev->dev_addr);
3256 err = -EINVAL;
3257 goto out;
3258 } else if (mlx4_is_slave(priv->mdev->dev) &&
3259 (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3260 /* Random MAC was assigned in mlx4_slave_cap
3261 * in mlx4_core module
3262 */
3263 dev->addr_assign_type |= NET_ADDR_RANDOM;
3264 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3265 }
3266
3267 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3268
3269 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3270 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3271 err = mlx4_en_alloc_resources(priv);
3272 if (err)
3273 goto out;
3274
3275 /* Initialize time stamping config */
3276 priv->hwtstamp_config.flags = 0;
3277 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3278 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3279
3280 /* Allocate page for receive rings */
3281 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3282 MLX4_EN_PAGE_SIZE);
3283 if (err) {
3284 en_err(priv, "Failed to allocate page for rx qps\n");
3285 goto out;
3286 }
3287 priv->allocated = 1;
3288
3289 /*
3290 * Initialize netdev entry points
3291 */
3292 if (mlx4_is_master(priv->mdev->dev))
3293 dev->netdev_ops = &mlx4_netdev_ops_master;
3294 else
3295 dev->netdev_ops = &mlx4_netdev_ops;
3296 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3297 netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
3298 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3299
3300 dev->ethtool_ops = &mlx4_en_ethtool_ops;
3301
3302 /*
3303 * Set driver features
3304 */
3305 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3306 if (mdev->LSO_support)
3307 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3308
3309 dev->vlan_features = dev->hw_features;
3310
3311 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3312 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3313 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3314 NETIF_F_HW_VLAN_CTAG_FILTER;
3315 dev->hw_features |= NETIF_F_LOOPBACK |
3316 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3317
3318 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3319 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3320 NETIF_F_HW_VLAN_STAG_FILTER;
3321 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3322 }
3323
3324 if (mlx4_is_slave(mdev->dev)) {
3325 bool vlan_offload_disabled;
3326 int phv;
3327
3328 err = get_phv_bit(mdev->dev, port, &phv);
3329 if (!err && phv) {
3330 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3331 priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3332 }
3333 err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port,
3334 &vlan_offload_disabled);
3335 if (!err && vlan_offload_disabled) {
3336 dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3337 NETIF_F_HW_VLAN_CTAG_RX |
3338 NETIF_F_HW_VLAN_STAG_TX |
3339 NETIF_F_HW_VLAN_STAG_RX);
3340 dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3341 NETIF_F_HW_VLAN_CTAG_RX |
3342 NETIF_F_HW_VLAN_STAG_TX |
3343 NETIF_F_HW_VLAN_STAG_RX);
3344 }
3345 } else {
3346 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3347 !(mdev->dev->caps.flags2 &
3348 MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3349 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3350 }
3351
3352 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3353 dev->hw_features |= NETIF_F_RXFCS;
3354
3355 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3356 dev->hw_features |= NETIF_F_RXALL;
3357
3358 if (mdev->dev->caps.steering_mode ==
3359 MLX4_STEERING_MODE_DEVICE_MANAGED &&
3360 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3361 dev->hw_features |= NETIF_F_NTUPLE;
3362
3363 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3364 dev->priv_flags |= IFF_UNICAST_FLT;
3365
3366 /* Setting a default hash function value */
3367 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3368 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3369 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3370 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3371 } else {
3372 en_warn(priv,
3373 "No RSS hash capabilities exposed, using Toeplitz\n");
3374 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3375 }
3376
3377 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3378 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3379 NETIF_F_GSO_UDP_TUNNEL_CSUM |
3380 NETIF_F_GSO_PARTIAL;
3381 dev->features |= NETIF_F_GSO_UDP_TUNNEL |
3382 NETIF_F_GSO_UDP_TUNNEL_CSUM |
3383 NETIF_F_GSO_PARTIAL;
3384 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3385 }
3386
3387 /* MTU range: 46 - hw-specific max */
3388 dev->min_mtu = MLX4_EN_MIN_MTU;
3389 dev->max_mtu = priv->max_mtu;
3390
3391 mdev->pndev[port] = dev;
3392 mdev->upper[port] = NULL;
3393
3394 netif_carrier_off(dev);
3395 mlx4_en_set_default_moderation(priv);
3396
3397 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]);
3398 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3399
3400 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3401
3402 /* Configure port */
3403 mlx4_en_calc_rx_buf(dev);
3404 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3405 priv->rx_skb_size + ETH_FCS_LEN,
3406 prof->tx_pause, prof->tx_ppp,
3407 prof->rx_pause, prof->rx_ppp);
3408 if (err) {
3409 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3410 priv->port, err);
3411 goto out;
3412 }
3413
3414 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3415 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3416 if (err) {
3417 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3418 err);
3419 goto out;
3420 }
3421 }
3422
3423 /* Init port */
3424 en_warn(priv, "Initializing port\n");
3425 err = mlx4_INIT_PORT(mdev->dev, priv->port);
3426 if (err) {
3427 en_err(priv, "Failed Initializing port\n");
3428 goto out;
3429 }
3430 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3431
3432 /* Initialize time stamp mechanism */
3433 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3434 mlx4_en_init_timestamp(mdev);
3435
3436 queue_delayed_work(mdev->workqueue, &priv->service_task,
3437 SERVICE_TASK_DELAY);
3438
3439 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3440 mdev->profile.prof[priv->port].rx_ppp,
3441 mdev->profile.prof[priv->port].rx_pause,
3442 mdev->profile.prof[priv->port].tx_ppp,
3443 mdev->profile.prof[priv->port].tx_pause);
3444
3445 err = register_netdev(dev);
3446 if (err) {
3447 en_err(priv, "Netdev registration failed for port %d\n", port);
3448 goto out;
3449 }
3450
3451 priv->registered = 1;
3452 devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3453 dev);
3454
3455 return 0;
3456
3457 err_free_tx:
3458 while (t--) {
3459 kfree(priv->tx_ring[t]);
3460 kfree(priv->tx_cq[t]);
3461 }
3462 out:
3463 mlx4_en_destroy_netdev(dev);
3464 return err;
3465 }
3466
3467 int mlx4_en_reset_config(struct net_device *dev,
3468 struct hwtstamp_config ts_config,
3469 netdev_features_t features)
3470 {
3471 struct mlx4_en_priv *priv = netdev_priv(dev);
3472 struct mlx4_en_dev *mdev = priv->mdev;
3473 struct mlx4_en_port_profile new_prof;
3474 struct mlx4_en_priv *tmp;
3475 int port_up = 0;
3476 int err = 0;
3477
3478 if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3479 priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3480 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3481 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3482 return 0; /* Nothing to change */
3483
3484 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3485 (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3486 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3487 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3488 return -EINVAL;
3489 }
3490
3491 tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3492 if (!tmp)
3493 return -ENOMEM;
3494
3495 mutex_lock(&mdev->state_lock);
3496
3497 memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3498 memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3499
3500 err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof);
3501 if (err)
3502 goto out;
3503
3504 if (priv->port_up) {
3505 port_up = 1;
3506 mlx4_en_stop_port(dev, 1);
3507 }
3508
3509 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3510 ts_config.rx_filter,
3511 !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3512
3513 mlx4_en_safe_replace_resources(priv, tmp);
3514
3515 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3516 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3517 dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3518 else
3519 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3520 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3521 /* RX time-stamping is OFF, update the RX vlan offload
3522 * to the latest wanted state
3523 */
3524 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3525 dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3526 else
3527 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3528 }
3529
3530 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3531 if (features & NETIF_F_RXFCS)
3532 dev->features |= NETIF_F_RXFCS;
3533 else
3534 dev->features &= ~NETIF_F_RXFCS;
3535 }
3536
3537 /* RX vlan offload and RX time-stamping can't co-exist !
3538 * Regardless of the caller's choice,
3539 * Turn Off RX vlan offload in case of time-stamping is ON
3540 */
3541 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3542 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3543 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3544 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3545 }
3546
3547 if (port_up) {
3548 err = mlx4_en_start_port(dev);
3549 if (err)
3550 en_err(priv, "Failed starting port\n");
3551 }
3552
3553 out:
3554 mutex_unlock(&mdev->state_lock);
3555 kfree(tmp);
3556 if (!err)
3557 netdev_features_change(dev);
3558 return err;
3559 }
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