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Merge tag 'wireless-drivers-for-davem-2015-12-28' of git://git.kernel.org/pub/scm...
[mirror_ubuntu-bionic-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/etherdevice.h>
35 #include <linux/tcp.h>
36 #include <linux/if_vlan.h>
37 #include <linux/delay.h>
38 #include <linux/slab.h>
39 #include <linux/hash.h>
40 #include <net/ip.h>
41 #include <net/busy_poll.h>
42 #include <net/vxlan.h>
43
44 #include <linux/mlx4/driver.h>
45 #include <linux/mlx4/device.h>
46 #include <linux/mlx4/cmd.h>
47 #include <linux/mlx4/cq.h>
48
49 #include "mlx4_en.h"
50 #include "en_port.h"
51
52 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
53 {
54 struct mlx4_en_priv *priv = netdev_priv(dev);
55 int i;
56 unsigned int offset = 0;
57
58 if (up && up != MLX4_EN_NUM_UP)
59 return -EINVAL;
60
61 netdev_set_num_tc(dev, up);
62
63 /* Partition Tx queues evenly amongst UP's */
64 for (i = 0; i < up; i++) {
65 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
66 offset += priv->num_tx_rings_p_up;
67 }
68
69 return 0;
70 }
71
72 #ifdef CONFIG_NET_RX_BUSY_POLL
73 /* must be called with local_bh_disable()d */
74 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
75 {
76 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
77 struct net_device *dev = cq->dev;
78 struct mlx4_en_priv *priv = netdev_priv(dev);
79 struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
80 int done;
81
82 if (!priv->port_up)
83 return LL_FLUSH_FAILED;
84
85 if (!mlx4_en_cq_lock_poll(cq))
86 return LL_FLUSH_BUSY;
87
88 done = mlx4_en_process_rx_cq(dev, cq, 4);
89 if (likely(done))
90 rx_ring->cleaned += done;
91 else
92 rx_ring->misses++;
93
94 mlx4_en_cq_unlock_poll(cq);
95
96 return done;
97 }
98 #endif /* CONFIG_NET_RX_BUSY_POLL */
99
100 #ifdef CONFIG_RFS_ACCEL
101
102 struct mlx4_en_filter {
103 struct list_head next;
104 struct work_struct work;
105
106 u8 ip_proto;
107 __be32 src_ip;
108 __be32 dst_ip;
109 __be16 src_port;
110 __be16 dst_port;
111
112 int rxq_index;
113 struct mlx4_en_priv *priv;
114 u32 flow_id; /* RFS infrastructure id */
115 int id; /* mlx4_en driver id */
116 u64 reg_id; /* Flow steering API id */
117 u8 activated; /* Used to prevent expiry before filter
118 * is attached
119 */
120 struct hlist_node filter_chain;
121 };
122
123 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
124
125 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
126 {
127 switch (ip_proto) {
128 case IPPROTO_UDP:
129 return MLX4_NET_TRANS_RULE_ID_UDP;
130 case IPPROTO_TCP:
131 return MLX4_NET_TRANS_RULE_ID_TCP;
132 default:
133 return MLX4_NET_TRANS_RULE_NUM;
134 }
135 };
136
137 static void mlx4_en_filter_work(struct work_struct *work)
138 {
139 struct mlx4_en_filter *filter = container_of(work,
140 struct mlx4_en_filter,
141 work);
142 struct mlx4_en_priv *priv = filter->priv;
143 struct mlx4_spec_list spec_tcp_udp = {
144 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
145 {
146 .tcp_udp = {
147 .dst_port = filter->dst_port,
148 .dst_port_msk = (__force __be16)-1,
149 .src_port = filter->src_port,
150 .src_port_msk = (__force __be16)-1,
151 },
152 },
153 };
154 struct mlx4_spec_list spec_ip = {
155 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
156 {
157 .ipv4 = {
158 .dst_ip = filter->dst_ip,
159 .dst_ip_msk = (__force __be32)-1,
160 .src_ip = filter->src_ip,
161 .src_ip_msk = (__force __be32)-1,
162 },
163 },
164 };
165 struct mlx4_spec_list spec_eth = {
166 .id = MLX4_NET_TRANS_RULE_ID_ETH,
167 };
168 struct mlx4_net_trans_rule rule = {
169 .list = LIST_HEAD_INIT(rule.list),
170 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
171 .exclusive = 1,
172 .allow_loopback = 1,
173 .promisc_mode = MLX4_FS_REGULAR,
174 .port = priv->port,
175 .priority = MLX4_DOMAIN_RFS,
176 };
177 int rc;
178 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
179
180 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
181 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
182 filter->ip_proto);
183 goto ignore;
184 }
185 list_add_tail(&spec_eth.list, &rule.list);
186 list_add_tail(&spec_ip.list, &rule.list);
187 list_add_tail(&spec_tcp_udp.list, &rule.list);
188
189 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
190 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
191 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
192
193 filter->activated = 0;
194
195 if (filter->reg_id) {
196 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
197 if (rc && rc != -ENOENT)
198 en_err(priv, "Error detaching flow. rc = %d\n", rc);
199 }
200
201 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
202 if (rc)
203 en_err(priv, "Error attaching flow. err = %d\n", rc);
204
205 ignore:
206 mlx4_en_filter_rfs_expire(priv);
207
208 filter->activated = 1;
209 }
210
211 static inline struct hlist_head *
212 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
213 __be16 src_port, __be16 dst_port)
214 {
215 unsigned long l;
216 int bucket_idx;
217
218 l = (__force unsigned long)src_port |
219 ((__force unsigned long)dst_port << 2);
220 l ^= (__force unsigned long)(src_ip ^ dst_ip);
221
222 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
223
224 return &priv->filter_hash[bucket_idx];
225 }
226
227 static struct mlx4_en_filter *
228 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
229 __be32 dst_ip, u8 ip_proto, __be16 src_port,
230 __be16 dst_port, u32 flow_id)
231 {
232 struct mlx4_en_filter *filter = NULL;
233
234 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
235 if (!filter)
236 return NULL;
237
238 filter->priv = priv;
239 filter->rxq_index = rxq_index;
240 INIT_WORK(&filter->work, mlx4_en_filter_work);
241
242 filter->src_ip = src_ip;
243 filter->dst_ip = dst_ip;
244 filter->ip_proto = ip_proto;
245 filter->src_port = src_port;
246 filter->dst_port = dst_port;
247
248 filter->flow_id = flow_id;
249
250 filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
251
252 list_add_tail(&filter->next, &priv->filters);
253 hlist_add_head(&filter->filter_chain,
254 filter_hash_bucket(priv, src_ip, dst_ip, src_port,
255 dst_port));
256
257 return filter;
258 }
259
260 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
261 {
262 struct mlx4_en_priv *priv = filter->priv;
263 int rc;
264
265 list_del(&filter->next);
266
267 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
268 if (rc && rc != -ENOENT)
269 en_err(priv, "Error detaching flow. rc = %d\n", rc);
270
271 kfree(filter);
272 }
273
274 static inline struct mlx4_en_filter *
275 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
276 u8 ip_proto, __be16 src_port, __be16 dst_port)
277 {
278 struct mlx4_en_filter *filter;
279 struct mlx4_en_filter *ret = NULL;
280
281 hlist_for_each_entry(filter,
282 filter_hash_bucket(priv, src_ip, dst_ip,
283 src_port, dst_port),
284 filter_chain) {
285 if (filter->src_ip == src_ip &&
286 filter->dst_ip == dst_ip &&
287 filter->ip_proto == ip_proto &&
288 filter->src_port == src_port &&
289 filter->dst_port == dst_port) {
290 ret = filter;
291 break;
292 }
293 }
294
295 return ret;
296 }
297
298 static int
299 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
300 u16 rxq_index, u32 flow_id)
301 {
302 struct mlx4_en_priv *priv = netdev_priv(net_dev);
303 struct mlx4_en_filter *filter;
304 const struct iphdr *ip;
305 const __be16 *ports;
306 u8 ip_proto;
307 __be32 src_ip;
308 __be32 dst_ip;
309 __be16 src_port;
310 __be16 dst_port;
311 int nhoff = skb_network_offset(skb);
312 int ret = 0;
313
314 if (skb->protocol != htons(ETH_P_IP))
315 return -EPROTONOSUPPORT;
316
317 ip = (const struct iphdr *)(skb->data + nhoff);
318 if (ip_is_fragment(ip))
319 return -EPROTONOSUPPORT;
320
321 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
322 return -EPROTONOSUPPORT;
323 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
324
325 ip_proto = ip->protocol;
326 src_ip = ip->saddr;
327 dst_ip = ip->daddr;
328 src_port = ports[0];
329 dst_port = ports[1];
330
331 spin_lock_bh(&priv->filters_lock);
332 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
333 src_port, dst_port);
334 if (filter) {
335 if (filter->rxq_index == rxq_index)
336 goto out;
337
338 filter->rxq_index = rxq_index;
339 } else {
340 filter = mlx4_en_filter_alloc(priv, rxq_index,
341 src_ip, dst_ip, ip_proto,
342 src_port, dst_port, flow_id);
343 if (!filter) {
344 ret = -ENOMEM;
345 goto err;
346 }
347 }
348
349 queue_work(priv->mdev->workqueue, &filter->work);
350
351 out:
352 ret = filter->id;
353 err:
354 spin_unlock_bh(&priv->filters_lock);
355
356 return ret;
357 }
358
359 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
360 {
361 struct mlx4_en_filter *filter, *tmp;
362 LIST_HEAD(del_list);
363
364 spin_lock_bh(&priv->filters_lock);
365 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
366 list_move(&filter->next, &del_list);
367 hlist_del(&filter->filter_chain);
368 }
369 spin_unlock_bh(&priv->filters_lock);
370
371 list_for_each_entry_safe(filter, tmp, &del_list, next) {
372 cancel_work_sync(&filter->work);
373 mlx4_en_filter_free(filter);
374 }
375 }
376
377 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
378 {
379 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
380 LIST_HEAD(del_list);
381 int i = 0;
382
383 spin_lock_bh(&priv->filters_lock);
384 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
385 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
386 break;
387
388 if (filter->activated &&
389 !work_pending(&filter->work) &&
390 rps_may_expire_flow(priv->dev,
391 filter->rxq_index, filter->flow_id,
392 filter->id)) {
393 list_move(&filter->next, &del_list);
394 hlist_del(&filter->filter_chain);
395 } else
396 last_filter = filter;
397
398 i++;
399 }
400
401 if (last_filter && (&last_filter->next != priv->filters.next))
402 list_move(&priv->filters, &last_filter->next);
403
404 spin_unlock_bh(&priv->filters_lock);
405
406 list_for_each_entry_safe(filter, tmp, &del_list, next)
407 mlx4_en_filter_free(filter);
408 }
409 #endif
410
411 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
412 __be16 proto, u16 vid)
413 {
414 struct mlx4_en_priv *priv = netdev_priv(dev);
415 struct mlx4_en_dev *mdev = priv->mdev;
416 int err;
417 int idx;
418
419 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
420
421 set_bit(vid, priv->active_vlans);
422
423 /* Add VID to port VLAN filter */
424 mutex_lock(&mdev->state_lock);
425 if (mdev->device_up && priv->port_up) {
426 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
427 if (err)
428 en_err(priv, "Failed configuring VLAN filter\n");
429 }
430 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
431 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
432 mutex_unlock(&mdev->state_lock);
433
434 return 0;
435 }
436
437 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
438 __be16 proto, u16 vid)
439 {
440 struct mlx4_en_priv *priv = netdev_priv(dev);
441 struct mlx4_en_dev *mdev = priv->mdev;
442 int err;
443
444 en_dbg(HW, priv, "Killing VID:%d\n", vid);
445
446 clear_bit(vid, priv->active_vlans);
447
448 /* Remove VID from port VLAN filter */
449 mutex_lock(&mdev->state_lock);
450 mlx4_unregister_vlan(mdev->dev, priv->port, vid);
451
452 if (mdev->device_up && priv->port_up) {
453 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
454 if (err)
455 en_err(priv, "Failed configuring VLAN filter\n");
456 }
457 mutex_unlock(&mdev->state_lock);
458
459 return 0;
460 }
461
462 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
463 {
464 int i;
465 for (i = ETH_ALEN - 1; i >= 0; --i) {
466 dst_mac[i] = src_mac & 0xff;
467 src_mac >>= 8;
468 }
469 memset(&dst_mac[ETH_ALEN], 0, 2);
470 }
471
472
473 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
474 int qpn, u64 *reg_id)
475 {
476 int err;
477
478 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
479 priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
480 return 0; /* do nothing */
481
482 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
483 MLX4_DOMAIN_NIC, reg_id);
484 if (err) {
485 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
486 return err;
487 }
488 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
489 return 0;
490 }
491
492
493 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
494 unsigned char *mac, int *qpn, u64 *reg_id)
495 {
496 struct mlx4_en_dev *mdev = priv->mdev;
497 struct mlx4_dev *dev = mdev->dev;
498 int err;
499
500 switch (dev->caps.steering_mode) {
501 case MLX4_STEERING_MODE_B0: {
502 struct mlx4_qp qp;
503 u8 gid[16] = {0};
504
505 qp.qpn = *qpn;
506 memcpy(&gid[10], mac, ETH_ALEN);
507 gid[5] = priv->port;
508
509 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
510 break;
511 }
512 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
513 struct mlx4_spec_list spec_eth = { {NULL} };
514 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
515
516 struct mlx4_net_trans_rule rule = {
517 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
518 .exclusive = 0,
519 .allow_loopback = 1,
520 .promisc_mode = MLX4_FS_REGULAR,
521 .priority = MLX4_DOMAIN_NIC,
522 };
523
524 rule.port = priv->port;
525 rule.qpn = *qpn;
526 INIT_LIST_HEAD(&rule.list);
527
528 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
529 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
530 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
531 list_add_tail(&spec_eth.list, &rule.list);
532
533 err = mlx4_flow_attach(dev, &rule, reg_id);
534 break;
535 }
536 default:
537 return -EINVAL;
538 }
539 if (err)
540 en_warn(priv, "Failed Attaching Unicast\n");
541
542 return err;
543 }
544
545 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
546 unsigned char *mac, int qpn, u64 reg_id)
547 {
548 struct mlx4_en_dev *mdev = priv->mdev;
549 struct mlx4_dev *dev = mdev->dev;
550
551 switch (dev->caps.steering_mode) {
552 case MLX4_STEERING_MODE_B0: {
553 struct mlx4_qp qp;
554 u8 gid[16] = {0};
555
556 qp.qpn = qpn;
557 memcpy(&gid[10], mac, ETH_ALEN);
558 gid[5] = priv->port;
559
560 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
561 break;
562 }
563 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
564 mlx4_flow_detach(dev, reg_id);
565 break;
566 }
567 default:
568 en_err(priv, "Invalid steering mode.\n");
569 }
570 }
571
572 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
573 {
574 struct mlx4_en_dev *mdev = priv->mdev;
575 struct mlx4_dev *dev = mdev->dev;
576 int index = 0;
577 int err = 0;
578 int *qpn = &priv->base_qpn;
579 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
580
581 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
582 priv->dev->dev_addr);
583 index = mlx4_register_mac(dev, priv->port, mac);
584 if (index < 0) {
585 err = index;
586 en_err(priv, "Failed adding MAC: %pM\n",
587 priv->dev->dev_addr);
588 return err;
589 }
590
591 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
592 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
593 *qpn = base_qpn + index;
594 return 0;
595 }
596
597 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
598 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
599 if (err) {
600 en_err(priv, "Failed to reserve qp for mac registration\n");
601 mlx4_unregister_mac(dev, priv->port, mac);
602 return err;
603 }
604
605 return 0;
606 }
607
608 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
609 {
610 struct mlx4_en_dev *mdev = priv->mdev;
611 struct mlx4_dev *dev = mdev->dev;
612 int qpn = priv->base_qpn;
613
614 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
615 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
616 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
617 priv->dev->dev_addr);
618 mlx4_unregister_mac(dev, priv->port, mac);
619 } else {
620 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
621 priv->port, qpn);
622 mlx4_qp_release_range(dev, qpn, 1);
623 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
624 }
625 }
626
627 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
628 unsigned char *new_mac, unsigned char *prev_mac)
629 {
630 struct mlx4_en_dev *mdev = priv->mdev;
631 struct mlx4_dev *dev = mdev->dev;
632 int err = 0;
633 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
634
635 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
636 struct hlist_head *bucket;
637 unsigned int mac_hash;
638 struct mlx4_mac_entry *entry;
639 struct hlist_node *tmp;
640 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
641
642 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
643 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
644 if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
645 mlx4_en_uc_steer_release(priv, entry->mac,
646 qpn, entry->reg_id);
647 mlx4_unregister_mac(dev, priv->port,
648 prev_mac_u64);
649 hlist_del_rcu(&entry->hlist);
650 synchronize_rcu();
651 memcpy(entry->mac, new_mac, ETH_ALEN);
652 entry->reg_id = 0;
653 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
654 hlist_add_head_rcu(&entry->hlist,
655 &priv->mac_hash[mac_hash]);
656 mlx4_register_mac(dev, priv->port, new_mac_u64);
657 err = mlx4_en_uc_steer_add(priv, new_mac,
658 &qpn,
659 &entry->reg_id);
660 if (err)
661 return err;
662 if (priv->tunnel_reg_id) {
663 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
664 priv->tunnel_reg_id = 0;
665 }
666 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
667 &priv->tunnel_reg_id);
668 return err;
669 }
670 }
671 return -EINVAL;
672 }
673
674 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
675 }
676
677 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
678 unsigned char new_mac[ETH_ALEN + 2])
679 {
680 int err = 0;
681
682 if (priv->port_up) {
683 /* Remove old MAC and insert the new one */
684 err = mlx4_en_replace_mac(priv, priv->base_qpn,
685 new_mac, priv->current_mac);
686 if (err)
687 en_err(priv, "Failed changing HW MAC address\n");
688 } else
689 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
690
691 if (!err)
692 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
693
694 return err;
695 }
696
697 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
698 {
699 struct mlx4_en_priv *priv = netdev_priv(dev);
700 struct mlx4_en_dev *mdev = priv->mdev;
701 struct sockaddr *saddr = addr;
702 unsigned char new_mac[ETH_ALEN + 2];
703 int err;
704
705 if (!is_valid_ether_addr(saddr->sa_data))
706 return -EADDRNOTAVAIL;
707
708 mutex_lock(&mdev->state_lock);
709 memcpy(new_mac, saddr->sa_data, ETH_ALEN);
710 err = mlx4_en_do_set_mac(priv, new_mac);
711 if (!err)
712 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
713 mutex_unlock(&mdev->state_lock);
714
715 return err;
716 }
717
718 static void mlx4_en_clear_list(struct net_device *dev)
719 {
720 struct mlx4_en_priv *priv = netdev_priv(dev);
721 struct mlx4_en_mc_list *tmp, *mc_to_del;
722
723 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
724 list_del(&mc_to_del->list);
725 kfree(mc_to_del);
726 }
727 }
728
729 static void mlx4_en_cache_mclist(struct net_device *dev)
730 {
731 struct mlx4_en_priv *priv = netdev_priv(dev);
732 struct netdev_hw_addr *ha;
733 struct mlx4_en_mc_list *tmp;
734
735 mlx4_en_clear_list(dev);
736 netdev_for_each_mc_addr(ha, dev) {
737 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
738 if (!tmp) {
739 mlx4_en_clear_list(dev);
740 return;
741 }
742 memcpy(tmp->addr, ha->addr, ETH_ALEN);
743 list_add_tail(&tmp->list, &priv->mc_list);
744 }
745 }
746
747 static void update_mclist_flags(struct mlx4_en_priv *priv,
748 struct list_head *dst,
749 struct list_head *src)
750 {
751 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
752 bool found;
753
754 /* Find all the entries that should be removed from dst,
755 * These are the entries that are not found in src
756 */
757 list_for_each_entry(dst_tmp, dst, list) {
758 found = false;
759 list_for_each_entry(src_tmp, src, list) {
760 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
761 found = true;
762 break;
763 }
764 }
765 if (!found)
766 dst_tmp->action = MCLIST_REM;
767 }
768
769 /* Add entries that exist in src but not in dst
770 * mark them as need to add
771 */
772 list_for_each_entry(src_tmp, src, list) {
773 found = false;
774 list_for_each_entry(dst_tmp, dst, list) {
775 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
776 dst_tmp->action = MCLIST_NONE;
777 found = true;
778 break;
779 }
780 }
781 if (!found) {
782 new_mc = kmemdup(src_tmp,
783 sizeof(struct mlx4_en_mc_list),
784 GFP_KERNEL);
785 if (!new_mc)
786 return;
787
788 new_mc->action = MCLIST_ADD;
789 list_add_tail(&new_mc->list, dst);
790 }
791 }
792 }
793
794 static void mlx4_en_set_rx_mode(struct net_device *dev)
795 {
796 struct mlx4_en_priv *priv = netdev_priv(dev);
797
798 if (!priv->port_up)
799 return;
800
801 queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
802 }
803
804 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
805 struct mlx4_en_dev *mdev)
806 {
807 int err = 0;
808
809 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
810 if (netif_msg_rx_status(priv))
811 en_warn(priv, "Entering promiscuous mode\n");
812 priv->flags |= MLX4_EN_FLAG_PROMISC;
813
814 /* Enable promiscouos mode */
815 switch (mdev->dev->caps.steering_mode) {
816 case MLX4_STEERING_MODE_DEVICE_MANAGED:
817 err = mlx4_flow_steer_promisc_add(mdev->dev,
818 priv->port,
819 priv->base_qpn,
820 MLX4_FS_ALL_DEFAULT);
821 if (err)
822 en_err(priv, "Failed enabling promiscuous mode\n");
823 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
824 break;
825
826 case MLX4_STEERING_MODE_B0:
827 err = mlx4_unicast_promisc_add(mdev->dev,
828 priv->base_qpn,
829 priv->port);
830 if (err)
831 en_err(priv, "Failed enabling unicast promiscuous mode\n");
832
833 /* Add the default qp number as multicast
834 * promisc
835 */
836 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
837 err = mlx4_multicast_promisc_add(mdev->dev,
838 priv->base_qpn,
839 priv->port);
840 if (err)
841 en_err(priv, "Failed enabling multicast promiscuous mode\n");
842 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
843 }
844 break;
845
846 case MLX4_STEERING_MODE_A0:
847 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
848 priv->port,
849 priv->base_qpn,
850 1);
851 if (err)
852 en_err(priv, "Failed enabling promiscuous mode\n");
853 break;
854 }
855
856 /* Disable port multicast filter (unconditionally) */
857 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
858 0, MLX4_MCAST_DISABLE);
859 if (err)
860 en_err(priv, "Failed disabling multicast filter\n");
861 }
862 }
863
864 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
865 struct mlx4_en_dev *mdev)
866 {
867 int err = 0;
868
869 if (netif_msg_rx_status(priv))
870 en_warn(priv, "Leaving promiscuous mode\n");
871 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
872
873 /* Disable promiscouos mode */
874 switch (mdev->dev->caps.steering_mode) {
875 case MLX4_STEERING_MODE_DEVICE_MANAGED:
876 err = mlx4_flow_steer_promisc_remove(mdev->dev,
877 priv->port,
878 MLX4_FS_ALL_DEFAULT);
879 if (err)
880 en_err(priv, "Failed disabling promiscuous mode\n");
881 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
882 break;
883
884 case MLX4_STEERING_MODE_B0:
885 err = mlx4_unicast_promisc_remove(mdev->dev,
886 priv->base_qpn,
887 priv->port);
888 if (err)
889 en_err(priv, "Failed disabling unicast promiscuous mode\n");
890 /* Disable Multicast promisc */
891 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
892 err = mlx4_multicast_promisc_remove(mdev->dev,
893 priv->base_qpn,
894 priv->port);
895 if (err)
896 en_err(priv, "Failed disabling multicast promiscuous mode\n");
897 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
898 }
899 break;
900
901 case MLX4_STEERING_MODE_A0:
902 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
903 priv->port,
904 priv->base_qpn, 0);
905 if (err)
906 en_err(priv, "Failed disabling promiscuous mode\n");
907 break;
908 }
909 }
910
911 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
912 struct net_device *dev,
913 struct mlx4_en_dev *mdev)
914 {
915 struct mlx4_en_mc_list *mclist, *tmp;
916 u64 mcast_addr = 0;
917 u8 mc_list[16] = {0};
918 int err = 0;
919
920 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
921 if (dev->flags & IFF_ALLMULTI) {
922 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
923 0, MLX4_MCAST_DISABLE);
924 if (err)
925 en_err(priv, "Failed disabling multicast filter\n");
926
927 /* Add the default qp number as multicast promisc */
928 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
929 switch (mdev->dev->caps.steering_mode) {
930 case MLX4_STEERING_MODE_DEVICE_MANAGED:
931 err = mlx4_flow_steer_promisc_add(mdev->dev,
932 priv->port,
933 priv->base_qpn,
934 MLX4_FS_MC_DEFAULT);
935 break;
936
937 case MLX4_STEERING_MODE_B0:
938 err = mlx4_multicast_promisc_add(mdev->dev,
939 priv->base_qpn,
940 priv->port);
941 break;
942
943 case MLX4_STEERING_MODE_A0:
944 break;
945 }
946 if (err)
947 en_err(priv, "Failed entering multicast promisc mode\n");
948 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
949 }
950 } else {
951 /* Disable Multicast promisc */
952 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
953 switch (mdev->dev->caps.steering_mode) {
954 case MLX4_STEERING_MODE_DEVICE_MANAGED:
955 err = mlx4_flow_steer_promisc_remove(mdev->dev,
956 priv->port,
957 MLX4_FS_MC_DEFAULT);
958 break;
959
960 case MLX4_STEERING_MODE_B0:
961 err = mlx4_multicast_promisc_remove(mdev->dev,
962 priv->base_qpn,
963 priv->port);
964 break;
965
966 case MLX4_STEERING_MODE_A0:
967 break;
968 }
969 if (err)
970 en_err(priv, "Failed disabling multicast promiscuous mode\n");
971 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
972 }
973
974 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
975 0, MLX4_MCAST_DISABLE);
976 if (err)
977 en_err(priv, "Failed disabling multicast filter\n");
978
979 /* Flush mcast filter and init it with broadcast address */
980 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
981 1, MLX4_MCAST_CONFIG);
982
983 /* Update multicast list - we cache all addresses so they won't
984 * change while HW is updated holding the command semaphor */
985 netif_addr_lock_bh(dev);
986 mlx4_en_cache_mclist(dev);
987 netif_addr_unlock_bh(dev);
988 list_for_each_entry(mclist, &priv->mc_list, list) {
989 mcast_addr = mlx4_mac_to_u64(mclist->addr);
990 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
991 mcast_addr, 0, MLX4_MCAST_CONFIG);
992 }
993 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
994 0, MLX4_MCAST_ENABLE);
995 if (err)
996 en_err(priv, "Failed enabling multicast filter\n");
997
998 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
999 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1000 if (mclist->action == MCLIST_REM) {
1001 /* detach this address and delete from list */
1002 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1003 mc_list[5] = priv->port;
1004 err = mlx4_multicast_detach(mdev->dev,
1005 &priv->rss_map.indir_qp,
1006 mc_list,
1007 MLX4_PROT_ETH,
1008 mclist->reg_id);
1009 if (err)
1010 en_err(priv, "Fail to detach multicast address\n");
1011
1012 if (mclist->tunnel_reg_id) {
1013 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1014 if (err)
1015 en_err(priv, "Failed to detach multicast address\n");
1016 }
1017
1018 /* remove from list */
1019 list_del(&mclist->list);
1020 kfree(mclist);
1021 } else if (mclist->action == MCLIST_ADD) {
1022 /* attach the address */
1023 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1024 /* needed for B0 steering support */
1025 mc_list[5] = priv->port;
1026 err = mlx4_multicast_attach(mdev->dev,
1027 &priv->rss_map.indir_qp,
1028 mc_list,
1029 priv->port, 0,
1030 MLX4_PROT_ETH,
1031 &mclist->reg_id);
1032 if (err)
1033 en_err(priv, "Fail to attach multicast address\n");
1034
1035 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1036 &mclist->tunnel_reg_id);
1037 if (err)
1038 en_err(priv, "Failed to attach multicast address\n");
1039 }
1040 }
1041 }
1042 }
1043
1044 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1045 struct net_device *dev,
1046 struct mlx4_en_dev *mdev)
1047 {
1048 struct netdev_hw_addr *ha;
1049 struct mlx4_mac_entry *entry;
1050 struct hlist_node *tmp;
1051 bool found;
1052 u64 mac;
1053 int err = 0;
1054 struct hlist_head *bucket;
1055 unsigned int i;
1056 int removed = 0;
1057 u32 prev_flags;
1058
1059 /* Note that we do not need to protect our mac_hash traversal with rcu,
1060 * since all modification code is protected by mdev->state_lock
1061 */
1062
1063 /* find what to remove */
1064 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1065 bucket = &priv->mac_hash[i];
1066 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1067 found = false;
1068 netdev_for_each_uc_addr(ha, dev) {
1069 if (ether_addr_equal_64bits(entry->mac,
1070 ha->addr)) {
1071 found = true;
1072 break;
1073 }
1074 }
1075
1076 /* MAC address of the port is not in uc list */
1077 if (ether_addr_equal_64bits(entry->mac,
1078 priv->current_mac))
1079 found = true;
1080
1081 if (!found) {
1082 mac = mlx4_mac_to_u64(entry->mac);
1083 mlx4_en_uc_steer_release(priv, entry->mac,
1084 priv->base_qpn,
1085 entry->reg_id);
1086 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1087
1088 hlist_del_rcu(&entry->hlist);
1089 kfree_rcu(entry, rcu);
1090 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1091 entry->mac, priv->port);
1092 ++removed;
1093 }
1094 }
1095 }
1096
1097 /* if we didn't remove anything, there is no use in trying to add
1098 * again once we are in a forced promisc mode state
1099 */
1100 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1101 return;
1102
1103 prev_flags = priv->flags;
1104 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1105
1106 /* find what to add */
1107 netdev_for_each_uc_addr(ha, dev) {
1108 found = false;
1109 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1110 hlist_for_each_entry(entry, bucket, hlist) {
1111 if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1112 found = true;
1113 break;
1114 }
1115 }
1116
1117 if (!found) {
1118 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1119 if (!entry) {
1120 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1121 ha->addr, priv->port);
1122 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1123 break;
1124 }
1125 mac = mlx4_mac_to_u64(ha->addr);
1126 memcpy(entry->mac, ha->addr, ETH_ALEN);
1127 err = mlx4_register_mac(mdev->dev, priv->port, mac);
1128 if (err < 0) {
1129 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1130 ha->addr, priv->port, err);
1131 kfree(entry);
1132 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1133 break;
1134 }
1135 err = mlx4_en_uc_steer_add(priv, ha->addr,
1136 &priv->base_qpn,
1137 &entry->reg_id);
1138 if (err) {
1139 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1140 ha->addr, priv->port, err);
1141 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1142 kfree(entry);
1143 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1144 break;
1145 } else {
1146 unsigned int mac_hash;
1147 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1148 ha->addr, priv->port);
1149 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1150 bucket = &priv->mac_hash[mac_hash];
1151 hlist_add_head_rcu(&entry->hlist, bucket);
1152 }
1153 }
1154 }
1155
1156 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1157 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1158 priv->port);
1159 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1160 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1161 priv->port);
1162 }
1163 }
1164
1165 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1166 {
1167 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1168 rx_mode_task);
1169 struct mlx4_en_dev *mdev = priv->mdev;
1170 struct net_device *dev = priv->dev;
1171
1172 mutex_lock(&mdev->state_lock);
1173 if (!mdev->device_up) {
1174 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1175 goto out;
1176 }
1177 if (!priv->port_up) {
1178 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1179 goto out;
1180 }
1181
1182 if (!netif_carrier_ok(dev)) {
1183 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1184 if (priv->port_state.link_state) {
1185 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1186 netif_carrier_on(dev);
1187 en_dbg(LINK, priv, "Link Up\n");
1188 }
1189 }
1190 }
1191
1192 if (dev->priv_flags & IFF_UNICAST_FLT)
1193 mlx4_en_do_uc_filter(priv, dev, mdev);
1194
1195 /* Promsicuous mode: disable all filters */
1196 if ((dev->flags & IFF_PROMISC) ||
1197 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1198 mlx4_en_set_promisc_mode(priv, mdev);
1199 goto out;
1200 }
1201
1202 /* Not in promiscuous mode */
1203 if (priv->flags & MLX4_EN_FLAG_PROMISC)
1204 mlx4_en_clear_promisc_mode(priv, mdev);
1205
1206 mlx4_en_do_multicast(priv, dev, mdev);
1207 out:
1208 mutex_unlock(&mdev->state_lock);
1209 }
1210
1211 #ifdef CONFIG_NET_POLL_CONTROLLER
1212 static void mlx4_en_netpoll(struct net_device *dev)
1213 {
1214 struct mlx4_en_priv *priv = netdev_priv(dev);
1215 struct mlx4_en_cq *cq;
1216 int i;
1217
1218 for (i = 0; i < priv->rx_ring_num; i++) {
1219 cq = priv->rx_cq[i];
1220 napi_schedule(&cq->napi);
1221 }
1222 }
1223 #endif
1224
1225 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1226 {
1227 u64 reg_id;
1228 int err = 0;
1229 int *qpn = &priv->base_qpn;
1230 struct mlx4_mac_entry *entry;
1231
1232 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1233 if (err)
1234 return err;
1235
1236 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1237 &priv->tunnel_reg_id);
1238 if (err)
1239 goto tunnel_err;
1240
1241 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1242 if (!entry) {
1243 err = -ENOMEM;
1244 goto alloc_err;
1245 }
1246
1247 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1248 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1249 entry->reg_id = reg_id;
1250 hlist_add_head_rcu(&entry->hlist,
1251 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1252
1253 return 0;
1254
1255 alloc_err:
1256 if (priv->tunnel_reg_id)
1257 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1258
1259 tunnel_err:
1260 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1261 return err;
1262 }
1263
1264 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1265 {
1266 u64 mac;
1267 unsigned int i;
1268 int qpn = priv->base_qpn;
1269 struct hlist_head *bucket;
1270 struct hlist_node *tmp;
1271 struct mlx4_mac_entry *entry;
1272
1273 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1274 bucket = &priv->mac_hash[i];
1275 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1276 mac = mlx4_mac_to_u64(entry->mac);
1277 en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1278 entry->mac);
1279 mlx4_en_uc_steer_release(priv, entry->mac,
1280 qpn, entry->reg_id);
1281
1282 mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1283 hlist_del_rcu(&entry->hlist);
1284 kfree_rcu(entry, rcu);
1285 }
1286 }
1287
1288 if (priv->tunnel_reg_id) {
1289 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1290 priv->tunnel_reg_id = 0;
1291 }
1292 }
1293
1294 static void mlx4_en_tx_timeout(struct net_device *dev)
1295 {
1296 struct mlx4_en_priv *priv = netdev_priv(dev);
1297 struct mlx4_en_dev *mdev = priv->mdev;
1298 int i;
1299
1300 if (netif_msg_timer(priv))
1301 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1302
1303 for (i = 0; i < priv->tx_ring_num; i++) {
1304 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1305 continue;
1306 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1307 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1308 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1309 }
1310
1311 priv->port_stats.tx_timeout++;
1312 en_dbg(DRV, priv, "Scheduling watchdog\n");
1313 queue_work(mdev->workqueue, &priv->watchdog_task);
1314 }
1315
1316
1317 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1318 {
1319 struct mlx4_en_priv *priv = netdev_priv(dev);
1320
1321 spin_lock_bh(&priv->stats_lock);
1322 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1323 spin_unlock_bh(&priv->stats_lock);
1324
1325 return &priv->ret_stats;
1326 }
1327
1328 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1329 {
1330 struct mlx4_en_cq *cq;
1331 int i;
1332
1333 /* If we haven't received a specific coalescing setting
1334 * (module param), we set the moderation parameters as follows:
1335 * - moder_cnt is set to the number of mtu sized packets to
1336 * satisfy our coalescing target.
1337 * - moder_time is set to a fixed value.
1338 */
1339 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1340 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1341 priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1342 priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1343 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1344 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1345
1346 /* Setup cq moderation params */
1347 for (i = 0; i < priv->rx_ring_num; i++) {
1348 cq = priv->rx_cq[i];
1349 cq->moder_cnt = priv->rx_frames;
1350 cq->moder_time = priv->rx_usecs;
1351 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1352 priv->last_moder_packets[i] = 0;
1353 priv->last_moder_bytes[i] = 0;
1354 }
1355
1356 for (i = 0; i < priv->tx_ring_num; i++) {
1357 cq = priv->tx_cq[i];
1358 cq->moder_cnt = priv->tx_frames;
1359 cq->moder_time = priv->tx_usecs;
1360 }
1361
1362 /* Reset auto-moderation params */
1363 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1364 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1365 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1366 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1367 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1368 priv->adaptive_rx_coal = 1;
1369 priv->last_moder_jiffies = 0;
1370 priv->last_moder_tx_packets = 0;
1371 }
1372
1373 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1374 {
1375 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1376 struct mlx4_en_cq *cq;
1377 unsigned long packets;
1378 unsigned long rate;
1379 unsigned long avg_pkt_size;
1380 unsigned long rx_packets;
1381 unsigned long rx_bytes;
1382 unsigned long rx_pkt_diff;
1383 int moder_time;
1384 int ring, err;
1385
1386 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1387 return;
1388
1389 for (ring = 0; ring < priv->rx_ring_num; ring++) {
1390 spin_lock_bh(&priv->stats_lock);
1391 rx_packets = priv->rx_ring[ring]->packets;
1392 rx_bytes = priv->rx_ring[ring]->bytes;
1393 spin_unlock_bh(&priv->stats_lock);
1394
1395 rx_pkt_diff = ((unsigned long) (rx_packets -
1396 priv->last_moder_packets[ring]));
1397 packets = rx_pkt_diff;
1398 rate = packets * HZ / period;
1399 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1400 priv->last_moder_bytes[ring])) / packets : 0;
1401
1402 /* Apply auto-moderation only when packet rate
1403 * exceeds a rate that it matters */
1404 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1405 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1406 if (rate < priv->pkt_rate_low)
1407 moder_time = priv->rx_usecs_low;
1408 else if (rate > priv->pkt_rate_high)
1409 moder_time = priv->rx_usecs_high;
1410 else
1411 moder_time = (rate - priv->pkt_rate_low) *
1412 (priv->rx_usecs_high - priv->rx_usecs_low) /
1413 (priv->pkt_rate_high - priv->pkt_rate_low) +
1414 priv->rx_usecs_low;
1415 } else {
1416 moder_time = priv->rx_usecs_low;
1417 }
1418
1419 if (moder_time != priv->last_moder_time[ring]) {
1420 priv->last_moder_time[ring] = moder_time;
1421 cq = priv->rx_cq[ring];
1422 cq->moder_time = moder_time;
1423 cq->moder_cnt = priv->rx_frames;
1424 err = mlx4_en_set_cq_moder(priv, cq);
1425 if (err)
1426 en_err(priv, "Failed modifying moderation for cq:%d\n",
1427 ring);
1428 }
1429 priv->last_moder_packets[ring] = rx_packets;
1430 priv->last_moder_bytes[ring] = rx_bytes;
1431 }
1432
1433 priv->last_moder_jiffies = jiffies;
1434 }
1435
1436 static void mlx4_en_do_get_stats(struct work_struct *work)
1437 {
1438 struct delayed_work *delay = to_delayed_work(work);
1439 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1440 stats_task);
1441 struct mlx4_en_dev *mdev = priv->mdev;
1442 int err;
1443
1444 mutex_lock(&mdev->state_lock);
1445 if (mdev->device_up) {
1446 if (priv->port_up) {
1447 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1448 if (err)
1449 en_dbg(HW, priv, "Could not update stats\n");
1450
1451 mlx4_en_auto_moderation(priv);
1452 }
1453
1454 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1455 }
1456 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1457 mlx4_en_do_set_mac(priv, priv->current_mac);
1458 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1459 }
1460 mutex_unlock(&mdev->state_lock);
1461 }
1462
1463 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1464 * periodically
1465 */
1466 static void mlx4_en_service_task(struct work_struct *work)
1467 {
1468 struct delayed_work *delay = to_delayed_work(work);
1469 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1470 service_task);
1471 struct mlx4_en_dev *mdev = priv->mdev;
1472
1473 mutex_lock(&mdev->state_lock);
1474 if (mdev->device_up) {
1475 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1476 mlx4_en_ptp_overflow_check(mdev);
1477
1478 mlx4_en_recover_from_oom(priv);
1479 queue_delayed_work(mdev->workqueue, &priv->service_task,
1480 SERVICE_TASK_DELAY);
1481 }
1482 mutex_unlock(&mdev->state_lock);
1483 }
1484
1485 static void mlx4_en_linkstate(struct work_struct *work)
1486 {
1487 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1488 linkstate_task);
1489 struct mlx4_en_dev *mdev = priv->mdev;
1490 int linkstate = priv->link_state;
1491
1492 mutex_lock(&mdev->state_lock);
1493 /* If observable port state changed set carrier state and
1494 * report to system log */
1495 if (priv->last_link_state != linkstate) {
1496 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1497 en_info(priv, "Link Down\n");
1498 netif_carrier_off(priv->dev);
1499 } else {
1500 en_info(priv, "Link Up\n");
1501 netif_carrier_on(priv->dev);
1502 }
1503 }
1504 priv->last_link_state = linkstate;
1505 mutex_unlock(&mdev->state_lock);
1506 }
1507
1508 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1509 {
1510 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1511 int numa_node = priv->mdev->dev->numa_node;
1512
1513 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1514 return -ENOMEM;
1515
1516 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1517 ring->affinity_mask);
1518 return 0;
1519 }
1520
1521 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1522 {
1523 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1524 }
1525
1526 int mlx4_en_start_port(struct net_device *dev)
1527 {
1528 struct mlx4_en_priv *priv = netdev_priv(dev);
1529 struct mlx4_en_dev *mdev = priv->mdev;
1530 struct mlx4_en_cq *cq;
1531 struct mlx4_en_tx_ring *tx_ring;
1532 int rx_index = 0;
1533 int tx_index = 0;
1534 int err = 0;
1535 int i;
1536 int j;
1537 u8 mc_list[16] = {0};
1538
1539 if (priv->port_up) {
1540 en_dbg(DRV, priv, "start port called while port already up\n");
1541 return 0;
1542 }
1543
1544 INIT_LIST_HEAD(&priv->mc_list);
1545 INIT_LIST_HEAD(&priv->curr_list);
1546 INIT_LIST_HEAD(&priv->ethtool_list);
1547 memset(&priv->ethtool_rules[0], 0,
1548 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1549
1550 /* Calculate Rx buf size */
1551 dev->mtu = min(dev->mtu, priv->max_mtu);
1552 mlx4_en_calc_rx_buf(dev);
1553 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1554
1555 /* Configure rx cq's and rings */
1556 err = mlx4_en_activate_rx_rings(priv);
1557 if (err) {
1558 en_err(priv, "Failed to activate RX rings\n");
1559 return err;
1560 }
1561 for (i = 0; i < priv->rx_ring_num; i++) {
1562 cq = priv->rx_cq[i];
1563
1564 mlx4_en_cq_init_lock(cq);
1565
1566 err = mlx4_en_init_affinity_hint(priv, i);
1567 if (err) {
1568 en_err(priv, "Failed preparing IRQ affinity hint\n");
1569 goto cq_err;
1570 }
1571
1572 err = mlx4_en_activate_cq(priv, cq, i);
1573 if (err) {
1574 en_err(priv, "Failed activating Rx CQ\n");
1575 mlx4_en_free_affinity_hint(priv, i);
1576 goto cq_err;
1577 }
1578
1579 for (j = 0; j < cq->size; j++) {
1580 struct mlx4_cqe *cqe = NULL;
1581
1582 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1583 priv->cqe_factor;
1584 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1585 }
1586
1587 err = mlx4_en_set_cq_moder(priv, cq);
1588 if (err) {
1589 en_err(priv, "Failed setting cq moderation parameters\n");
1590 mlx4_en_deactivate_cq(priv, cq);
1591 mlx4_en_free_affinity_hint(priv, i);
1592 goto cq_err;
1593 }
1594 mlx4_en_arm_cq(priv, cq);
1595 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1596 ++rx_index;
1597 }
1598
1599 /* Set qp number */
1600 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1601 err = mlx4_en_get_qp(priv);
1602 if (err) {
1603 en_err(priv, "Failed getting eth qp\n");
1604 goto cq_err;
1605 }
1606 mdev->mac_removed[priv->port] = 0;
1607
1608 priv->counter_index =
1609 mlx4_get_default_counter_index(mdev->dev, priv->port);
1610
1611 err = mlx4_en_config_rss_steer(priv);
1612 if (err) {
1613 en_err(priv, "Failed configuring rss steering\n");
1614 goto mac_err;
1615 }
1616
1617 err = mlx4_en_create_drop_qp(priv);
1618 if (err)
1619 goto rss_err;
1620
1621 /* Configure tx cq's and rings */
1622 for (i = 0; i < priv->tx_ring_num; i++) {
1623 /* Configure cq */
1624 cq = priv->tx_cq[i];
1625 err = mlx4_en_activate_cq(priv, cq, i);
1626 if (err) {
1627 en_err(priv, "Failed allocating Tx CQ\n");
1628 goto tx_err;
1629 }
1630 err = mlx4_en_set_cq_moder(priv, cq);
1631 if (err) {
1632 en_err(priv, "Failed setting cq moderation parameters\n");
1633 mlx4_en_deactivate_cq(priv, cq);
1634 goto tx_err;
1635 }
1636 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1637 cq->buf->wqe_index = cpu_to_be16(0xffff);
1638
1639 /* Configure ring */
1640 tx_ring = priv->tx_ring[i];
1641 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1642 i / priv->num_tx_rings_p_up);
1643 if (err) {
1644 en_err(priv, "Failed allocating Tx ring\n");
1645 mlx4_en_deactivate_cq(priv, cq);
1646 goto tx_err;
1647 }
1648 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1649
1650 /* Arm CQ for TX completions */
1651 mlx4_en_arm_cq(priv, cq);
1652
1653 /* Set initial ownership of all Tx TXBBs to SW (1) */
1654 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1655 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1656 ++tx_index;
1657 }
1658
1659 /* Configure port */
1660 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1661 priv->rx_skb_size + ETH_FCS_LEN,
1662 priv->prof->tx_pause,
1663 priv->prof->tx_ppp,
1664 priv->prof->rx_pause,
1665 priv->prof->rx_ppp);
1666 if (err) {
1667 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1668 priv->port, err);
1669 goto tx_err;
1670 }
1671 /* Set default qp number */
1672 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1673 if (err) {
1674 en_err(priv, "Failed setting default qp numbers\n");
1675 goto tx_err;
1676 }
1677
1678 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1679 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1680 if (err) {
1681 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1682 err);
1683 goto tx_err;
1684 }
1685 }
1686
1687 /* Init port */
1688 en_dbg(HW, priv, "Initializing port\n");
1689 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1690 if (err) {
1691 en_err(priv, "Failed Initializing port\n");
1692 goto tx_err;
1693 }
1694
1695 /* Set Unicast and VXLAN steering rules */
1696 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1697 mlx4_en_set_rss_steer_rules(priv))
1698 mlx4_warn(mdev, "Failed setting steering rules\n");
1699
1700 /* Attach rx QP to bradcast address */
1701 eth_broadcast_addr(&mc_list[10]);
1702 mc_list[5] = priv->port; /* needed for B0 steering support */
1703 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1704 priv->port, 0, MLX4_PROT_ETH,
1705 &priv->broadcast_id))
1706 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1707
1708 /* Must redo promiscuous mode setup. */
1709 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1710
1711 /* Schedule multicast task to populate multicast list */
1712 queue_work(mdev->workqueue, &priv->rx_mode_task);
1713
1714 #ifdef CONFIG_MLX4_EN_VXLAN
1715 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1716 vxlan_get_rx_port(dev);
1717 #endif
1718 priv->port_up = true;
1719 netif_tx_start_all_queues(dev);
1720 netif_device_attach(dev);
1721
1722 return 0;
1723
1724 tx_err:
1725 while (tx_index--) {
1726 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1727 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1728 }
1729 mlx4_en_destroy_drop_qp(priv);
1730 rss_err:
1731 mlx4_en_release_rss_steer(priv);
1732 mac_err:
1733 mlx4_en_put_qp(priv);
1734 cq_err:
1735 while (rx_index--) {
1736 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1737 mlx4_en_free_affinity_hint(priv, rx_index);
1738 }
1739 for (i = 0; i < priv->rx_ring_num; i++)
1740 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1741
1742 return err; /* need to close devices */
1743 }
1744
1745
1746 void mlx4_en_stop_port(struct net_device *dev, int detach)
1747 {
1748 struct mlx4_en_priv *priv = netdev_priv(dev);
1749 struct mlx4_en_dev *mdev = priv->mdev;
1750 struct mlx4_en_mc_list *mclist, *tmp;
1751 struct ethtool_flow_id *flow, *tmp_flow;
1752 int i;
1753 u8 mc_list[16] = {0};
1754
1755 if (!priv->port_up) {
1756 en_dbg(DRV, priv, "stop port called while port already down\n");
1757 return;
1758 }
1759
1760 /* close port*/
1761 mlx4_CLOSE_PORT(mdev->dev, priv->port);
1762
1763 /* Synchronize with tx routine */
1764 netif_tx_lock_bh(dev);
1765 if (detach)
1766 netif_device_detach(dev);
1767 netif_tx_stop_all_queues(dev);
1768 netif_tx_unlock_bh(dev);
1769
1770 netif_tx_disable(dev);
1771
1772 /* Set port as not active */
1773 priv->port_up = false;
1774 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1775
1776 /* Promsicuous mode */
1777 if (mdev->dev->caps.steering_mode ==
1778 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1779 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1780 MLX4_EN_FLAG_MC_PROMISC);
1781 mlx4_flow_steer_promisc_remove(mdev->dev,
1782 priv->port,
1783 MLX4_FS_ALL_DEFAULT);
1784 mlx4_flow_steer_promisc_remove(mdev->dev,
1785 priv->port,
1786 MLX4_FS_MC_DEFAULT);
1787 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1788 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1789
1790 /* Disable promiscouos mode */
1791 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1792 priv->port);
1793
1794 /* Disable Multicast promisc */
1795 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1796 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1797 priv->port);
1798 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1799 }
1800 }
1801
1802 /* Detach All multicasts */
1803 eth_broadcast_addr(&mc_list[10]);
1804 mc_list[5] = priv->port; /* needed for B0 steering support */
1805 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1806 MLX4_PROT_ETH, priv->broadcast_id);
1807 list_for_each_entry(mclist, &priv->curr_list, list) {
1808 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1809 mc_list[5] = priv->port;
1810 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1811 mc_list, MLX4_PROT_ETH, mclist->reg_id);
1812 if (mclist->tunnel_reg_id)
1813 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1814 }
1815 mlx4_en_clear_list(dev);
1816 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1817 list_del(&mclist->list);
1818 kfree(mclist);
1819 }
1820
1821 /* Flush multicast filter */
1822 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1823
1824 /* Remove flow steering rules for the port*/
1825 if (mdev->dev->caps.steering_mode ==
1826 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1827 ASSERT_RTNL();
1828 list_for_each_entry_safe(flow, tmp_flow,
1829 &priv->ethtool_list, list) {
1830 mlx4_flow_detach(mdev->dev, flow->id);
1831 list_del(&flow->list);
1832 }
1833 }
1834
1835 mlx4_en_destroy_drop_qp(priv);
1836
1837 /* Free TX Rings */
1838 for (i = 0; i < priv->tx_ring_num; i++) {
1839 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1840 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1841 }
1842 msleep(10);
1843
1844 for (i = 0; i < priv->tx_ring_num; i++)
1845 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1846
1847 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1848 mlx4_en_delete_rss_steer_rules(priv);
1849
1850 /* Free RSS qps */
1851 mlx4_en_release_rss_steer(priv);
1852
1853 /* Unregister Mac address for the port */
1854 mlx4_en_put_qp(priv);
1855 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1856 mdev->mac_removed[priv->port] = 1;
1857
1858 /* Free RX Rings */
1859 for (i = 0; i < priv->rx_ring_num; i++) {
1860 struct mlx4_en_cq *cq = priv->rx_cq[i];
1861
1862 local_bh_disable();
1863 while (!mlx4_en_cq_lock_napi(cq)) {
1864 pr_info("CQ %d locked\n", i);
1865 mdelay(1);
1866 }
1867 local_bh_enable();
1868
1869 napi_synchronize(&cq->napi);
1870 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1871 mlx4_en_deactivate_cq(priv, cq);
1872
1873 mlx4_en_free_affinity_hint(priv, i);
1874 }
1875 }
1876
1877 static void mlx4_en_restart(struct work_struct *work)
1878 {
1879 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1880 watchdog_task);
1881 struct mlx4_en_dev *mdev = priv->mdev;
1882 struct net_device *dev = priv->dev;
1883
1884 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1885
1886 mutex_lock(&mdev->state_lock);
1887 if (priv->port_up) {
1888 mlx4_en_stop_port(dev, 1);
1889 if (mlx4_en_start_port(dev))
1890 en_err(priv, "Failed restarting port %d\n", priv->port);
1891 }
1892 mutex_unlock(&mdev->state_lock);
1893 }
1894
1895 static void mlx4_en_clear_stats(struct net_device *dev)
1896 {
1897 struct mlx4_en_priv *priv = netdev_priv(dev);
1898 struct mlx4_en_dev *mdev = priv->mdev;
1899 int i;
1900
1901 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1902 en_dbg(HW, priv, "Failed dumping statistics\n");
1903
1904 memset(&priv->stats, 0, sizeof(priv->stats));
1905 memset(&priv->pstats, 0, sizeof(priv->pstats));
1906 memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1907 memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1908 memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
1909 memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
1910 memset(&priv->rx_priority_flowstats, 0,
1911 sizeof(priv->rx_priority_flowstats));
1912 memset(&priv->tx_priority_flowstats, 0,
1913 sizeof(priv->tx_priority_flowstats));
1914 memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
1915
1916 for (i = 0; i < priv->tx_ring_num; i++) {
1917 priv->tx_ring[i]->bytes = 0;
1918 priv->tx_ring[i]->packets = 0;
1919 priv->tx_ring[i]->tx_csum = 0;
1920 }
1921 for (i = 0; i < priv->rx_ring_num; i++) {
1922 priv->rx_ring[i]->bytes = 0;
1923 priv->rx_ring[i]->packets = 0;
1924 priv->rx_ring[i]->csum_ok = 0;
1925 priv->rx_ring[i]->csum_none = 0;
1926 priv->rx_ring[i]->csum_complete = 0;
1927 }
1928 }
1929
1930 static int mlx4_en_open(struct net_device *dev)
1931 {
1932 struct mlx4_en_priv *priv = netdev_priv(dev);
1933 struct mlx4_en_dev *mdev = priv->mdev;
1934 int err = 0;
1935
1936 mutex_lock(&mdev->state_lock);
1937
1938 if (!mdev->device_up) {
1939 en_err(priv, "Cannot open - device down/disabled\n");
1940 err = -EBUSY;
1941 goto out;
1942 }
1943
1944 /* Reset HW statistics and SW counters */
1945 mlx4_en_clear_stats(dev);
1946
1947 err = mlx4_en_start_port(dev);
1948 if (err)
1949 en_err(priv, "Failed starting port:%d\n", priv->port);
1950
1951 out:
1952 mutex_unlock(&mdev->state_lock);
1953 return err;
1954 }
1955
1956
1957 static int mlx4_en_close(struct net_device *dev)
1958 {
1959 struct mlx4_en_priv *priv = netdev_priv(dev);
1960 struct mlx4_en_dev *mdev = priv->mdev;
1961
1962 en_dbg(IFDOWN, priv, "Close port called\n");
1963
1964 mutex_lock(&mdev->state_lock);
1965
1966 mlx4_en_stop_port(dev, 0);
1967 netif_carrier_off(dev);
1968
1969 mutex_unlock(&mdev->state_lock);
1970 return 0;
1971 }
1972
1973 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1974 {
1975 int i;
1976
1977 #ifdef CONFIG_RFS_ACCEL
1978 priv->dev->rx_cpu_rmap = NULL;
1979 #endif
1980
1981 for (i = 0; i < priv->tx_ring_num; i++) {
1982 if (priv->tx_ring && priv->tx_ring[i])
1983 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1984 if (priv->tx_cq && priv->tx_cq[i])
1985 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1986 }
1987
1988 for (i = 0; i < priv->rx_ring_num; i++) {
1989 if (priv->rx_ring[i])
1990 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1991 priv->prof->rx_ring_size, priv->stride);
1992 if (priv->rx_cq[i])
1993 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1994 }
1995
1996 }
1997
1998 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1999 {
2000 struct mlx4_en_port_profile *prof = priv->prof;
2001 int i;
2002 int node;
2003
2004 /* Create tx Rings */
2005 for (i = 0; i < priv->tx_ring_num; i++) {
2006 node = cpu_to_node(i % num_online_cpus());
2007 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
2008 prof->tx_ring_size, i, TX, node))
2009 goto err;
2010
2011 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
2012 prof->tx_ring_size, TXBB_SIZE,
2013 node, i))
2014 goto err;
2015 }
2016
2017 /* Create rx Rings */
2018 for (i = 0; i < priv->rx_ring_num; i++) {
2019 node = cpu_to_node(i % num_online_cpus());
2020 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2021 prof->rx_ring_size, i, RX, node))
2022 goto err;
2023
2024 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2025 prof->rx_ring_size, priv->stride,
2026 node))
2027 goto err;
2028 }
2029
2030 #ifdef CONFIG_RFS_ACCEL
2031 priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2032 #endif
2033
2034 return 0;
2035
2036 err:
2037 en_err(priv, "Failed to allocate NIC resources\n");
2038 for (i = 0; i < priv->rx_ring_num; i++) {
2039 if (priv->rx_ring[i])
2040 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2041 prof->rx_ring_size,
2042 priv->stride);
2043 if (priv->rx_cq[i])
2044 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2045 }
2046 for (i = 0; i < priv->tx_ring_num; i++) {
2047 if (priv->tx_ring[i])
2048 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2049 if (priv->tx_cq[i])
2050 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2051 }
2052 return -ENOMEM;
2053 }
2054
2055
2056 void mlx4_en_destroy_netdev(struct net_device *dev)
2057 {
2058 struct mlx4_en_priv *priv = netdev_priv(dev);
2059 struct mlx4_en_dev *mdev = priv->mdev;
2060
2061 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2062
2063 /* Unregister device - this will close the port if it was up */
2064 if (priv->registered)
2065 unregister_netdev(dev);
2066
2067 if (priv->allocated)
2068 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2069
2070 cancel_delayed_work(&priv->stats_task);
2071 cancel_delayed_work(&priv->service_task);
2072 /* flush any pending task for this netdev */
2073 flush_workqueue(mdev->workqueue);
2074
2075 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2076 mlx4_en_remove_timestamp(mdev);
2077
2078 /* Detach the netdev so tasks would not attempt to access it */
2079 mutex_lock(&mdev->state_lock);
2080 mdev->pndev[priv->port] = NULL;
2081 mdev->upper[priv->port] = NULL;
2082 mutex_unlock(&mdev->state_lock);
2083
2084 mlx4_en_free_resources(priv);
2085
2086 kfree(priv->tx_ring);
2087 kfree(priv->tx_cq);
2088
2089 free_netdev(dev);
2090 }
2091
2092 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2093 {
2094 struct mlx4_en_priv *priv = netdev_priv(dev);
2095 struct mlx4_en_dev *mdev = priv->mdev;
2096 int err = 0;
2097
2098 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2099 dev->mtu, new_mtu);
2100
2101 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2102 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2103 return -EPERM;
2104 }
2105 dev->mtu = new_mtu;
2106
2107 if (netif_running(dev)) {
2108 mutex_lock(&mdev->state_lock);
2109 if (!mdev->device_up) {
2110 /* NIC is probably restarting - let watchdog task reset
2111 * the port */
2112 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2113 } else {
2114 mlx4_en_stop_port(dev, 1);
2115 err = mlx4_en_start_port(dev);
2116 if (err) {
2117 en_err(priv, "Failed restarting port:%d\n",
2118 priv->port);
2119 queue_work(mdev->workqueue, &priv->watchdog_task);
2120 }
2121 }
2122 mutex_unlock(&mdev->state_lock);
2123 }
2124 return 0;
2125 }
2126
2127 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2128 {
2129 struct mlx4_en_priv *priv = netdev_priv(dev);
2130 struct mlx4_en_dev *mdev = priv->mdev;
2131 struct hwtstamp_config config;
2132
2133 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2134 return -EFAULT;
2135
2136 /* reserved for future extensions */
2137 if (config.flags)
2138 return -EINVAL;
2139
2140 /* device doesn't support time stamping */
2141 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2142 return -EINVAL;
2143
2144 /* TX HW timestamp */
2145 switch (config.tx_type) {
2146 case HWTSTAMP_TX_OFF:
2147 case HWTSTAMP_TX_ON:
2148 break;
2149 default:
2150 return -ERANGE;
2151 }
2152
2153 /* RX HW timestamp */
2154 switch (config.rx_filter) {
2155 case HWTSTAMP_FILTER_NONE:
2156 break;
2157 case HWTSTAMP_FILTER_ALL:
2158 case HWTSTAMP_FILTER_SOME:
2159 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2160 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2161 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2162 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2163 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2164 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2165 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2166 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2167 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2168 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2169 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2170 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2171 config.rx_filter = HWTSTAMP_FILTER_ALL;
2172 break;
2173 default:
2174 return -ERANGE;
2175 }
2176
2177 if (mlx4_en_reset_config(dev, config, dev->features)) {
2178 config.tx_type = HWTSTAMP_TX_OFF;
2179 config.rx_filter = HWTSTAMP_FILTER_NONE;
2180 }
2181
2182 return copy_to_user(ifr->ifr_data, &config,
2183 sizeof(config)) ? -EFAULT : 0;
2184 }
2185
2186 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2187 {
2188 struct mlx4_en_priv *priv = netdev_priv(dev);
2189
2190 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2191 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2192 }
2193
2194 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2195 {
2196 switch (cmd) {
2197 case SIOCSHWTSTAMP:
2198 return mlx4_en_hwtstamp_set(dev, ifr);
2199 case SIOCGHWTSTAMP:
2200 return mlx4_en_hwtstamp_get(dev, ifr);
2201 default:
2202 return -EOPNOTSUPP;
2203 }
2204 }
2205
2206 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2207 netdev_features_t features)
2208 {
2209 struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2210 struct mlx4_en_dev *mdev = en_priv->mdev;
2211
2212 /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2213 * enable/disable make sure S-TAG flag is always in same state as
2214 * C-TAG.
2215 */
2216 if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2217 !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2218 features |= NETIF_F_HW_VLAN_STAG_RX;
2219 else
2220 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2221
2222 return features;
2223 }
2224
2225 static int mlx4_en_set_features(struct net_device *netdev,
2226 netdev_features_t features)
2227 {
2228 struct mlx4_en_priv *priv = netdev_priv(netdev);
2229 bool reset = false;
2230 int ret = 0;
2231
2232 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2233 en_info(priv, "Turn %s RX-FCS\n",
2234 (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2235 reset = true;
2236 }
2237
2238 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2239 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2240
2241 en_info(priv, "Turn %s RX-ALL\n",
2242 ignore_fcs_value ? "ON" : "OFF");
2243 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2244 priv->port, ignore_fcs_value);
2245 if (ret)
2246 return ret;
2247 }
2248
2249 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2250 en_info(priv, "Turn %s RX vlan strip offload\n",
2251 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2252 reset = true;
2253 }
2254
2255 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2256 en_info(priv, "Turn %s TX vlan strip offload\n",
2257 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2258
2259 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2260 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2261 (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2262
2263 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2264 en_info(priv, "Turn %s loopback\n",
2265 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2266 mlx4_en_update_loopback_state(netdev, features);
2267 }
2268
2269 if (reset) {
2270 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2271 features);
2272 if (ret)
2273 return ret;
2274 }
2275
2276 return 0;
2277 }
2278
2279 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2280 {
2281 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2282 struct mlx4_en_dev *mdev = en_priv->mdev;
2283 u64 mac_u64 = mlx4_mac_to_u64(mac);
2284
2285 if (!is_valid_ether_addr(mac))
2286 return -EINVAL;
2287
2288 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2289 }
2290
2291 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2292 {
2293 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2294 struct mlx4_en_dev *mdev = en_priv->mdev;
2295
2296 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2297 }
2298
2299 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2300 int max_tx_rate)
2301 {
2302 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2303 struct mlx4_en_dev *mdev = en_priv->mdev;
2304
2305 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2306 max_tx_rate);
2307 }
2308
2309 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2310 {
2311 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2312 struct mlx4_en_dev *mdev = en_priv->mdev;
2313
2314 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2315 }
2316
2317 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2318 {
2319 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2320 struct mlx4_en_dev *mdev = en_priv->mdev;
2321
2322 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2323 }
2324
2325 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2326 {
2327 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2328 struct mlx4_en_dev *mdev = en_priv->mdev;
2329
2330 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2331 }
2332
2333 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2334 struct ifla_vf_stats *vf_stats)
2335 {
2336 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2337 struct mlx4_en_dev *mdev = en_priv->mdev;
2338
2339 return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2340 }
2341
2342 #define PORT_ID_BYTE_LEN 8
2343 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2344 struct netdev_phys_item_id *ppid)
2345 {
2346 struct mlx4_en_priv *priv = netdev_priv(dev);
2347 struct mlx4_dev *mdev = priv->mdev->dev;
2348 int i;
2349 u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2350
2351 if (!phys_port_id)
2352 return -EOPNOTSUPP;
2353
2354 ppid->id_len = sizeof(phys_port_id);
2355 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2356 ppid->id[i] = phys_port_id & 0xff;
2357 phys_port_id >>= 8;
2358 }
2359 return 0;
2360 }
2361
2362 #ifdef CONFIG_MLX4_EN_VXLAN
2363 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2364 {
2365 int ret;
2366 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2367 vxlan_add_task);
2368
2369 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2370 if (ret)
2371 goto out;
2372
2373 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2374 VXLAN_STEER_BY_OUTER_MAC, 1);
2375 out:
2376 if (ret) {
2377 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2378 return;
2379 }
2380
2381 /* set offloads */
2382 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2383 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
2384 priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
2385 priv->dev->features |= NETIF_F_GSO_UDP_TUNNEL;
2386 }
2387
2388 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2389 {
2390 int ret;
2391 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2392 vxlan_del_task);
2393 /* unset offloads */
2394 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2395 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL);
2396 priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL;
2397 priv->dev->features &= ~NETIF_F_GSO_UDP_TUNNEL;
2398
2399 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2400 VXLAN_STEER_BY_OUTER_MAC, 0);
2401 if (ret)
2402 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2403
2404 priv->vxlan_port = 0;
2405 }
2406
2407 static void mlx4_en_add_vxlan_port(struct net_device *dev,
2408 sa_family_t sa_family, __be16 port)
2409 {
2410 struct mlx4_en_priv *priv = netdev_priv(dev);
2411 __be16 current_port;
2412
2413 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2414 return;
2415
2416 if (sa_family == AF_INET6)
2417 return;
2418
2419 current_port = priv->vxlan_port;
2420 if (current_port && current_port != port) {
2421 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2422 ntohs(current_port), ntohs(port));
2423 return;
2424 }
2425
2426 priv->vxlan_port = port;
2427 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2428 }
2429
2430 static void mlx4_en_del_vxlan_port(struct net_device *dev,
2431 sa_family_t sa_family, __be16 port)
2432 {
2433 struct mlx4_en_priv *priv = netdev_priv(dev);
2434 __be16 current_port;
2435
2436 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2437 return;
2438
2439 if (sa_family == AF_INET6)
2440 return;
2441
2442 current_port = priv->vxlan_port;
2443 if (current_port != port) {
2444 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2445 return;
2446 }
2447
2448 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2449 }
2450
2451 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2452 struct net_device *dev,
2453 netdev_features_t features)
2454 {
2455 features = vlan_features_check(skb, features);
2456 return vxlan_features_check(skb, features);
2457 }
2458 #endif
2459
2460 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2461 {
2462 struct mlx4_en_priv *priv = netdev_priv(dev);
2463 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index];
2464 struct mlx4_update_qp_params params;
2465 int err;
2466
2467 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2468 return -EOPNOTSUPP;
2469
2470 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2471 if (maxrate >> 12) {
2472 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2473 params.rate_val = maxrate / 1000;
2474 } else if (maxrate) {
2475 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2476 params.rate_val = maxrate;
2477 } else { /* zero serves to revoke the QP rate-limitation */
2478 params.rate_unit = 0;
2479 params.rate_val = 0;
2480 }
2481
2482 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2483 &params);
2484 return err;
2485 }
2486
2487 static const struct net_device_ops mlx4_netdev_ops = {
2488 .ndo_open = mlx4_en_open,
2489 .ndo_stop = mlx4_en_close,
2490 .ndo_start_xmit = mlx4_en_xmit,
2491 .ndo_select_queue = mlx4_en_select_queue,
2492 .ndo_get_stats = mlx4_en_get_stats,
2493 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2494 .ndo_set_mac_address = mlx4_en_set_mac,
2495 .ndo_validate_addr = eth_validate_addr,
2496 .ndo_change_mtu = mlx4_en_change_mtu,
2497 .ndo_do_ioctl = mlx4_en_ioctl,
2498 .ndo_tx_timeout = mlx4_en_tx_timeout,
2499 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2500 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2501 #ifdef CONFIG_NET_POLL_CONTROLLER
2502 .ndo_poll_controller = mlx4_en_netpoll,
2503 #endif
2504 .ndo_set_features = mlx4_en_set_features,
2505 .ndo_fix_features = mlx4_en_fix_features,
2506 .ndo_setup_tc = mlx4_en_setup_tc,
2507 #ifdef CONFIG_RFS_ACCEL
2508 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2509 #endif
2510 #ifdef CONFIG_NET_RX_BUSY_POLL
2511 .ndo_busy_poll = mlx4_en_low_latency_recv,
2512 #endif
2513 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2514 #ifdef CONFIG_MLX4_EN_VXLAN
2515 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
2516 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
2517 .ndo_features_check = mlx4_en_features_check,
2518 #endif
2519 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
2520 };
2521
2522 static const struct net_device_ops mlx4_netdev_ops_master = {
2523 .ndo_open = mlx4_en_open,
2524 .ndo_stop = mlx4_en_close,
2525 .ndo_start_xmit = mlx4_en_xmit,
2526 .ndo_select_queue = mlx4_en_select_queue,
2527 .ndo_get_stats = mlx4_en_get_stats,
2528 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2529 .ndo_set_mac_address = mlx4_en_set_mac,
2530 .ndo_validate_addr = eth_validate_addr,
2531 .ndo_change_mtu = mlx4_en_change_mtu,
2532 .ndo_tx_timeout = mlx4_en_tx_timeout,
2533 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2534 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2535 .ndo_set_vf_mac = mlx4_en_set_vf_mac,
2536 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2537 .ndo_set_vf_rate = mlx4_en_set_vf_rate,
2538 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2539 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2540 .ndo_get_vf_stats = mlx4_en_get_vf_stats,
2541 .ndo_get_vf_config = mlx4_en_get_vf_config,
2542 #ifdef CONFIG_NET_POLL_CONTROLLER
2543 .ndo_poll_controller = mlx4_en_netpoll,
2544 #endif
2545 .ndo_set_features = mlx4_en_set_features,
2546 .ndo_fix_features = mlx4_en_fix_features,
2547 .ndo_setup_tc = mlx4_en_setup_tc,
2548 #ifdef CONFIG_RFS_ACCEL
2549 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2550 #endif
2551 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2552 #ifdef CONFIG_MLX4_EN_VXLAN
2553 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
2554 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
2555 .ndo_features_check = mlx4_en_features_check,
2556 #endif
2557 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
2558 };
2559
2560 struct mlx4_en_bond {
2561 struct work_struct work;
2562 struct mlx4_en_priv *priv;
2563 int is_bonded;
2564 struct mlx4_port_map port_map;
2565 };
2566
2567 static void mlx4_en_bond_work(struct work_struct *work)
2568 {
2569 struct mlx4_en_bond *bond = container_of(work,
2570 struct mlx4_en_bond,
2571 work);
2572 int err = 0;
2573 struct mlx4_dev *dev = bond->priv->mdev->dev;
2574
2575 if (bond->is_bonded) {
2576 if (!mlx4_is_bonded(dev)) {
2577 err = mlx4_bond(dev);
2578 if (err)
2579 en_err(bond->priv, "Fail to bond device\n");
2580 }
2581 if (!err) {
2582 err = mlx4_port_map_set(dev, &bond->port_map);
2583 if (err)
2584 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2585 bond->port_map.port1,
2586 bond->port_map.port2,
2587 err);
2588 }
2589 } else if (mlx4_is_bonded(dev)) {
2590 err = mlx4_unbond(dev);
2591 if (err)
2592 en_err(bond->priv, "Fail to unbond device\n");
2593 }
2594 dev_put(bond->priv->dev);
2595 kfree(bond);
2596 }
2597
2598 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2599 u8 v2p_p1, u8 v2p_p2)
2600 {
2601 struct mlx4_en_bond *bond = NULL;
2602
2603 bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2604 if (!bond)
2605 return -ENOMEM;
2606
2607 INIT_WORK(&bond->work, mlx4_en_bond_work);
2608 bond->priv = priv;
2609 bond->is_bonded = is_bonded;
2610 bond->port_map.port1 = v2p_p1;
2611 bond->port_map.port2 = v2p_p2;
2612 dev_hold(priv->dev);
2613 queue_work(priv->mdev->workqueue, &bond->work);
2614 return 0;
2615 }
2616
2617 int mlx4_en_netdev_event(struct notifier_block *this,
2618 unsigned long event, void *ptr)
2619 {
2620 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2621 u8 port = 0;
2622 struct mlx4_en_dev *mdev;
2623 struct mlx4_dev *dev;
2624 int i, num_eth_ports = 0;
2625 bool do_bond = true;
2626 struct mlx4_en_priv *priv;
2627 u8 v2p_port1 = 0;
2628 u8 v2p_port2 = 0;
2629
2630 if (!net_eq(dev_net(ndev), &init_net))
2631 return NOTIFY_DONE;
2632
2633 mdev = container_of(this, struct mlx4_en_dev, nb);
2634 dev = mdev->dev;
2635
2636 /* Go into this mode only when two network devices set on two ports
2637 * of the same mlx4 device are slaves of the same bonding master
2638 */
2639 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2640 ++num_eth_ports;
2641 if (!port && (mdev->pndev[i] == ndev))
2642 port = i;
2643 mdev->upper[i] = mdev->pndev[i] ?
2644 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2645 /* condition not met: network device is a slave */
2646 if (!mdev->upper[i])
2647 do_bond = false;
2648 if (num_eth_ports < 2)
2649 continue;
2650 /* condition not met: same master */
2651 if (mdev->upper[i] != mdev->upper[i-1])
2652 do_bond = false;
2653 }
2654 /* condition not met: 2 salves */
2655 do_bond = (num_eth_ports == 2) ? do_bond : false;
2656
2657 /* handle only events that come with enough info */
2658 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2659 return NOTIFY_DONE;
2660
2661 priv = netdev_priv(ndev);
2662 if (do_bond) {
2663 struct netdev_notifier_bonding_info *notifier_info = ptr;
2664 struct netdev_bonding_info *bonding_info =
2665 &notifier_info->bonding_info;
2666
2667 /* required mode 1, 2 or 4 */
2668 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2669 (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2670 (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2671 do_bond = false;
2672
2673 /* require exactly 2 slaves */
2674 if (bonding_info->master.num_slaves != 2)
2675 do_bond = false;
2676
2677 /* calc v2p */
2678 if (do_bond) {
2679 if (bonding_info->master.bond_mode ==
2680 BOND_MODE_ACTIVEBACKUP) {
2681 /* in active-backup mode virtual ports are
2682 * mapped to the physical port of the active
2683 * slave */
2684 if (bonding_info->slave.state ==
2685 BOND_STATE_BACKUP) {
2686 if (port == 1) {
2687 v2p_port1 = 2;
2688 v2p_port2 = 2;
2689 } else {
2690 v2p_port1 = 1;
2691 v2p_port2 = 1;
2692 }
2693 } else { /* BOND_STATE_ACTIVE */
2694 if (port == 1) {
2695 v2p_port1 = 1;
2696 v2p_port2 = 1;
2697 } else {
2698 v2p_port1 = 2;
2699 v2p_port2 = 2;
2700 }
2701 }
2702 } else { /* Active-Active */
2703 /* in active-active mode a virtual port is
2704 * mapped to the native physical port if and only
2705 * if the physical port is up */
2706 __s8 link = bonding_info->slave.link;
2707
2708 if (port == 1)
2709 v2p_port2 = 2;
2710 else
2711 v2p_port1 = 1;
2712 if ((link == BOND_LINK_UP) ||
2713 (link == BOND_LINK_FAIL)) {
2714 if (port == 1)
2715 v2p_port1 = 1;
2716 else
2717 v2p_port2 = 2;
2718 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2719 if (port == 1)
2720 v2p_port1 = 2;
2721 else
2722 v2p_port2 = 1;
2723 }
2724 }
2725 }
2726 }
2727
2728 mlx4_en_queue_bond_work(priv, do_bond,
2729 v2p_port1, v2p_port2);
2730
2731 return NOTIFY_DONE;
2732 }
2733
2734 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
2735 struct mlx4_en_stats_bitmap *stats_bitmap,
2736 u8 rx_ppp, u8 rx_pause,
2737 u8 tx_ppp, u8 tx_pause)
2738 {
2739 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
2740
2741 if (!mlx4_is_slave(dev) &&
2742 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
2743 mutex_lock(&stats_bitmap->mutex);
2744 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
2745
2746 if (rx_ppp)
2747 bitmap_set(stats_bitmap->bitmap, last_i,
2748 NUM_FLOW_PRIORITY_STATS_RX);
2749 last_i += NUM_FLOW_PRIORITY_STATS_RX;
2750
2751 if (rx_pause && !(rx_ppp))
2752 bitmap_set(stats_bitmap->bitmap, last_i,
2753 NUM_FLOW_STATS_RX);
2754 last_i += NUM_FLOW_STATS_RX;
2755
2756 if (tx_ppp)
2757 bitmap_set(stats_bitmap->bitmap, last_i,
2758 NUM_FLOW_PRIORITY_STATS_TX);
2759 last_i += NUM_FLOW_PRIORITY_STATS_TX;
2760
2761 if (tx_pause && !(tx_ppp))
2762 bitmap_set(stats_bitmap->bitmap, last_i,
2763 NUM_FLOW_STATS_TX);
2764 last_i += NUM_FLOW_STATS_TX;
2765
2766 mutex_unlock(&stats_bitmap->mutex);
2767 }
2768 }
2769
2770 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
2771 struct mlx4_en_stats_bitmap *stats_bitmap,
2772 u8 rx_ppp, u8 rx_pause,
2773 u8 tx_ppp, u8 tx_pause)
2774 {
2775 int last_i = 0;
2776
2777 mutex_init(&stats_bitmap->mutex);
2778 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
2779
2780 if (mlx4_is_slave(dev)) {
2781 bitmap_set(stats_bitmap->bitmap, last_i +
2782 MLX4_FIND_NETDEV_STAT(rx_packets), 1);
2783 bitmap_set(stats_bitmap->bitmap, last_i +
2784 MLX4_FIND_NETDEV_STAT(tx_packets), 1);
2785 bitmap_set(stats_bitmap->bitmap, last_i +
2786 MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
2787 bitmap_set(stats_bitmap->bitmap, last_i +
2788 MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
2789 bitmap_set(stats_bitmap->bitmap, last_i +
2790 MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
2791 bitmap_set(stats_bitmap->bitmap, last_i +
2792 MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
2793 } else {
2794 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
2795 }
2796 last_i += NUM_MAIN_STATS;
2797
2798 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
2799 last_i += NUM_PORT_STATS;
2800
2801 if (mlx4_is_master(dev))
2802 bitmap_set(stats_bitmap->bitmap, last_i,
2803 NUM_PF_STATS);
2804 last_i += NUM_PF_STATS;
2805
2806 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
2807 rx_ppp, rx_pause,
2808 tx_ppp, tx_pause);
2809 last_i += NUM_FLOW_STATS;
2810
2811 if (!mlx4_is_slave(dev))
2812 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
2813 }
2814
2815 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2816 struct mlx4_en_port_profile *prof)
2817 {
2818 struct net_device *dev;
2819 struct mlx4_en_priv *priv;
2820 int i;
2821 int err;
2822
2823 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2824 MAX_TX_RINGS, MAX_RX_RINGS);
2825 if (dev == NULL)
2826 return -ENOMEM;
2827
2828 netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2829 netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2830
2831 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
2832 dev->dev_port = port - 1;
2833
2834 /*
2835 * Initialize driver private data
2836 */
2837
2838 priv = netdev_priv(dev);
2839 memset(priv, 0, sizeof(struct mlx4_en_priv));
2840 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
2841 spin_lock_init(&priv->stats_lock);
2842 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2843 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2844 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2845 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2846 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2847 #ifdef CONFIG_MLX4_EN_VXLAN
2848 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2849 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2850 #endif
2851 #ifdef CONFIG_RFS_ACCEL
2852 INIT_LIST_HEAD(&priv->filters);
2853 spin_lock_init(&priv->filters_lock);
2854 #endif
2855
2856 priv->dev = dev;
2857 priv->mdev = mdev;
2858 priv->ddev = &mdev->pdev->dev;
2859 priv->prof = prof;
2860 priv->port = port;
2861 priv->port_up = false;
2862 priv->flags = prof->flags;
2863 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
2864 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2865 MLX4_WQE_CTRL_SOLICITED);
2866 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2867 priv->tx_ring_num = prof->tx_ring_num;
2868 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
2869 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
2870
2871 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2872 GFP_KERNEL);
2873 if (!priv->tx_ring) {
2874 err = -ENOMEM;
2875 goto out;
2876 }
2877 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2878 GFP_KERNEL);
2879 if (!priv->tx_cq) {
2880 err = -ENOMEM;
2881 goto out;
2882 }
2883 priv->rx_ring_num = prof->rx_ring_num;
2884 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2885 priv->cqe_size = mdev->dev->caps.cqe_size;
2886 priv->mac_index = -1;
2887 priv->msg_enable = MLX4_EN_MSG_LEVEL;
2888 #ifdef CONFIG_MLX4_EN_DCB
2889 if (!mlx4_is_slave(priv->mdev->dev)) {
2890 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2891 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2892 } else {
2893 en_info(priv, "enabling only PFC DCB ops\n");
2894 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2895 }
2896 }
2897 #endif
2898
2899 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2900 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2901
2902 /* Query for default mac and max mtu */
2903 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2904
2905 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
2906 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
2907 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
2908
2909 /* Set default MAC */
2910 dev->addr_len = ETH_ALEN;
2911 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2912 if (!is_valid_ether_addr(dev->dev_addr)) {
2913 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2914 priv->port, dev->dev_addr);
2915 err = -EINVAL;
2916 goto out;
2917 } else if (mlx4_is_slave(priv->mdev->dev) &&
2918 (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
2919 /* Random MAC was assigned in mlx4_slave_cap
2920 * in mlx4_core module
2921 */
2922 dev->addr_assign_type |= NET_ADDR_RANDOM;
2923 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2924 }
2925
2926 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
2927
2928 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2929 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2930 err = mlx4_en_alloc_resources(priv);
2931 if (err)
2932 goto out;
2933
2934 /* Initialize time stamping config */
2935 priv->hwtstamp_config.flags = 0;
2936 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2937 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2938
2939 /* Allocate page for receive rings */
2940 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2941 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2942 if (err) {
2943 en_err(priv, "Failed to allocate page for rx qps\n");
2944 goto out;
2945 }
2946 priv->allocated = 1;
2947
2948 /*
2949 * Initialize netdev entry points
2950 */
2951 if (mlx4_is_master(priv->mdev->dev))
2952 dev->netdev_ops = &mlx4_netdev_ops_master;
2953 else
2954 dev->netdev_ops = &mlx4_netdev_ops;
2955 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2956 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2957 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2958
2959 dev->ethtool_ops = &mlx4_en_ethtool_ops;
2960
2961 /*
2962 * Set driver features
2963 */
2964 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2965 if (mdev->LSO_support)
2966 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2967
2968 dev->vlan_features = dev->hw_features;
2969
2970 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2971 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2972 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2973 NETIF_F_HW_VLAN_CTAG_FILTER;
2974 dev->hw_features |= NETIF_F_LOOPBACK |
2975 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
2976
2977 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
2978 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
2979 NETIF_F_HW_VLAN_STAG_FILTER;
2980 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
2981 }
2982
2983 if (mlx4_is_slave(mdev->dev)) {
2984 int phv;
2985
2986 err = get_phv_bit(mdev->dev, port, &phv);
2987 if (!err && phv) {
2988 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
2989 priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
2990 }
2991 } else {
2992 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
2993 !(mdev->dev->caps.flags2 &
2994 MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2995 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
2996 }
2997
2998 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
2999 dev->hw_features |= NETIF_F_RXFCS;
3000
3001 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3002 dev->hw_features |= NETIF_F_RXALL;
3003
3004 if (mdev->dev->caps.steering_mode ==
3005 MLX4_STEERING_MODE_DEVICE_MANAGED &&
3006 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3007 dev->hw_features |= NETIF_F_NTUPLE;
3008
3009 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3010 dev->priv_flags |= IFF_UNICAST_FLT;
3011
3012 /* Setting a default hash function value */
3013 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3014 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3015 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3016 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3017 } else {
3018 en_warn(priv,
3019 "No RSS hash capabilities exposed, using Toeplitz\n");
3020 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3021 }
3022
3023 mdev->pndev[port] = dev;
3024 mdev->upper[port] = NULL;
3025
3026 netif_carrier_off(dev);
3027 mlx4_en_set_default_moderation(priv);
3028
3029 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
3030 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3031
3032 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3033
3034 /* Configure port */
3035 mlx4_en_calc_rx_buf(dev);
3036 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3037 priv->rx_skb_size + ETH_FCS_LEN,
3038 prof->tx_pause, prof->tx_ppp,
3039 prof->rx_pause, prof->rx_ppp);
3040 if (err) {
3041 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3042 priv->port, err);
3043 goto out;
3044 }
3045
3046 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3047 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3048 if (err) {
3049 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3050 err);
3051 goto out;
3052 }
3053 }
3054
3055 /* Init port */
3056 en_warn(priv, "Initializing port\n");
3057 err = mlx4_INIT_PORT(mdev->dev, priv->port);
3058 if (err) {
3059 en_err(priv, "Failed Initializing port\n");
3060 goto out;
3061 }
3062 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3063
3064 /* Initialize time stamp mechanism */
3065 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3066 mlx4_en_init_timestamp(mdev);
3067
3068 queue_delayed_work(mdev->workqueue, &priv->service_task,
3069 SERVICE_TASK_DELAY);
3070
3071 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3072 mdev->profile.prof[priv->port].rx_ppp,
3073 mdev->profile.prof[priv->port].rx_pause,
3074 mdev->profile.prof[priv->port].tx_ppp,
3075 mdev->profile.prof[priv->port].tx_pause);
3076
3077 err = register_netdev(dev);
3078 if (err) {
3079 en_err(priv, "Netdev registration failed for port %d\n", port);
3080 goto out;
3081 }
3082
3083 priv->registered = 1;
3084
3085 return 0;
3086
3087 out:
3088 mlx4_en_destroy_netdev(dev);
3089 return err;
3090 }
3091
3092 int mlx4_en_reset_config(struct net_device *dev,
3093 struct hwtstamp_config ts_config,
3094 netdev_features_t features)
3095 {
3096 struct mlx4_en_priv *priv = netdev_priv(dev);
3097 struct mlx4_en_dev *mdev = priv->mdev;
3098 int port_up = 0;
3099 int err = 0;
3100
3101 if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3102 priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3103 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3104 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3105 return 0; /* Nothing to change */
3106
3107 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3108 (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3109 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3110 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3111 return -EINVAL;
3112 }
3113
3114 mutex_lock(&mdev->state_lock);
3115 if (priv->port_up) {
3116 port_up = 1;
3117 mlx4_en_stop_port(dev, 1);
3118 }
3119
3120 mlx4_en_free_resources(priv);
3121
3122 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3123 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3124
3125 priv->hwtstamp_config.tx_type = ts_config.tx_type;
3126 priv->hwtstamp_config.rx_filter = ts_config.rx_filter;
3127
3128 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3129 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3130 dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3131 else
3132 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3133 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3134 /* RX time-stamping is OFF, update the RX vlan offload
3135 * to the latest wanted state
3136 */
3137 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3138 dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3139 else
3140 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3141 }
3142
3143 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3144 if (features & NETIF_F_RXFCS)
3145 dev->features |= NETIF_F_RXFCS;
3146 else
3147 dev->features &= ~NETIF_F_RXFCS;
3148 }
3149
3150 /* RX vlan offload and RX time-stamping can't co-exist !
3151 * Regardless of the caller's choice,
3152 * Turn Off RX vlan offload in case of time-stamping is ON
3153 */
3154 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3155 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3156 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3157 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3158 }
3159
3160 err = mlx4_en_alloc_resources(priv);
3161 if (err) {
3162 en_err(priv, "Failed reallocating port resources\n");
3163 goto out;
3164 }
3165 if (port_up) {
3166 err = mlx4_en_start_port(dev);
3167 if (err)
3168 en_err(priv, "Failed starting port\n");
3169 }
3170
3171 out:
3172 mutex_unlock(&mdev->state_lock);
3173 netdev_features_change(dev);
3174 return err;
3175 }
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