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Linux 3.18.86
[linux/fpc-iii.git] / drivers / net / ethernet / mellanox / mlx4 / en_netdev.c
blobf31814293d3cf3da9e24e21aa4114c84e82befc9
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 return 0; /* do nothing */
480
481 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
482 MLX4_DOMAIN_NIC, reg_id);
483 if (err) {
484 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
485 return err;
486 }
487 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
488 return 0;
489 }
490
491
492 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
493 unsigned char *mac, int *qpn, u64 *reg_id)
494 {
495 struct mlx4_en_dev *mdev = priv->mdev;
496 struct mlx4_dev *dev = mdev->dev;
497 int err;
498
499 switch (dev->caps.steering_mode) {
500 case MLX4_STEERING_MODE_B0: {
501 struct mlx4_qp qp;
502 u8 gid[16] = {0};
503
504 qp.qpn = *qpn;
505 memcpy(&gid[10], mac, ETH_ALEN);
506 gid[5] = priv->port;
507
508 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
509 break;
510 }
511 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
512 struct mlx4_spec_list spec_eth = { {NULL} };
513 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
514
515 struct mlx4_net_trans_rule rule = {
516 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
517 .exclusive = 0,
518 .allow_loopback = 1,
519 .promisc_mode = MLX4_FS_REGULAR,
520 .priority = MLX4_DOMAIN_NIC,
521 };
522
523 rule.port = priv->port;
524 rule.qpn = *qpn;
525 INIT_LIST_HEAD(&rule.list);
526
527 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
528 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
529 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
530 list_add_tail(&spec_eth.list, &rule.list);
531
532 err = mlx4_flow_attach(dev, &rule, reg_id);
533 break;
534 }
535 default:
536 return -EINVAL;
537 }
538 if (err)
539 en_warn(priv, "Failed Attaching Unicast\n");
540
541 return err;
542 }
543
544 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
545 unsigned char *mac, int qpn, u64 reg_id)
546 {
547 struct mlx4_en_dev *mdev = priv->mdev;
548 struct mlx4_dev *dev = mdev->dev;
549
550 switch (dev->caps.steering_mode) {
551 case MLX4_STEERING_MODE_B0: {
552 struct mlx4_qp qp;
553 u8 gid[16] = {0};
554
555 qp.qpn = qpn;
556 memcpy(&gid[10], mac, ETH_ALEN);
557 gid[5] = priv->port;
558
559 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
560 break;
561 }
562 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
563 mlx4_flow_detach(dev, reg_id);
564 break;
565 }
566 default:
567 en_err(priv, "Invalid steering mode.\n");
568 }
569 }
570
571 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
572 {
573 struct mlx4_en_dev *mdev = priv->mdev;
574 struct mlx4_dev *dev = mdev->dev;
575 struct mlx4_mac_entry *entry;
576 int index = 0;
577 int err = 0;
578 u64 reg_id;
579 int *qpn = &priv->base_qpn;
580 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
581
582 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
583 priv->dev->dev_addr);
584 index = mlx4_register_mac(dev, priv->port, mac);
585 if (index < 0) {
586 err = index;
587 en_err(priv, "Failed adding MAC: %pM\n",
588 priv->dev->dev_addr);
589 return err;
590 }
591
592 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
593 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
594 *qpn = base_qpn + index;
595 return 0;
596 }
597
598 err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
599 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
600 if (err) {
601 en_err(priv, "Failed to reserve qp for mac registration\n");
602 goto qp_err;
603 }
604
605 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
606 if (err)
607 goto steer_err;
608
609 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
610 &priv->tunnel_reg_id);
611 if (err)
612 goto tunnel_err;
613
614 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
615 if (!entry) {
616 err = -ENOMEM;
617 goto alloc_err;
618 }
619 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
620 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
621 entry->reg_id = reg_id;
622
623 hlist_add_head_rcu(&entry->hlist,
624 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
625
626 return 0;
627
628 alloc_err:
629 if (priv->tunnel_reg_id)
630 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
631 tunnel_err:
632 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
633
634 steer_err:
635 mlx4_qp_release_range(dev, *qpn, 1);
636
637 qp_err:
638 mlx4_unregister_mac(dev, priv->port, mac);
639 return err;
640 }
641
642 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
643 {
644 struct mlx4_en_dev *mdev = priv->mdev;
645 struct mlx4_dev *dev = mdev->dev;
646 int qpn = priv->base_qpn;
647 u64 mac;
648
649 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
650 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
651 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
652 priv->dev->dev_addr);
653 mlx4_unregister_mac(dev, priv->port, mac);
654 } else {
655 struct mlx4_mac_entry *entry;
656 struct hlist_node *tmp;
657 struct hlist_head *bucket;
658 unsigned int i;
659
660 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
661 bucket = &priv->mac_hash[i];
662 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
663 mac = mlx4_mac_to_u64(entry->mac);
664 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
665 entry->mac);
666 mlx4_en_uc_steer_release(priv, entry->mac,
667 qpn, entry->reg_id);
668
669 mlx4_unregister_mac(dev, priv->port, mac);
670 hlist_del_rcu(&entry->hlist);
671 kfree_rcu(entry, rcu);
672 }
673 }
674
675 if (priv->tunnel_reg_id) {
676 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
677 priv->tunnel_reg_id = 0;
678 }
679
680 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
681 priv->port, qpn);
682 mlx4_qp_release_range(dev, qpn, 1);
683 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
684 }
685 }
686
687 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
688 unsigned char *new_mac, unsigned char *prev_mac)
689 {
690 struct mlx4_en_dev *mdev = priv->mdev;
691 struct mlx4_dev *dev = mdev->dev;
692 int err = 0;
693 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
694
695 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
696 struct hlist_head *bucket;
697 unsigned int mac_hash;
698 struct mlx4_mac_entry *entry;
699 struct hlist_node *tmp;
700 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
701
702 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
703 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
704 if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
705 mlx4_en_uc_steer_release(priv, entry->mac,
706 qpn, entry->reg_id);
707 mlx4_unregister_mac(dev, priv->port,
708 prev_mac_u64);
709 hlist_del_rcu(&entry->hlist);
710 synchronize_rcu();
711 memcpy(entry->mac, new_mac, ETH_ALEN);
712 entry->reg_id = 0;
713 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
714 hlist_add_head_rcu(&entry->hlist,
715 &priv->mac_hash[mac_hash]);
716 mlx4_register_mac(dev, priv->port, new_mac_u64);
717 err = mlx4_en_uc_steer_add(priv, new_mac,
718 &qpn,
719 &entry->reg_id);
720 if (err)
721 return err;
722 if (priv->tunnel_reg_id) {
723 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
724 priv->tunnel_reg_id = 0;
725 }
726 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
727 &priv->tunnel_reg_id);
728 return err;
729 }
730 }
731 return -EINVAL;
732 }
733
734 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
735 }
736
737 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
738 unsigned char new_mac[ETH_ALEN + 2])
739 {
740 int err = 0;
741
742 if (priv->port_up) {
743 /* Remove old MAC and insert the new one */
744 err = mlx4_en_replace_mac(priv, priv->base_qpn,
745 new_mac, priv->current_mac);
746 if (err)
747 en_err(priv, "Failed changing HW MAC address\n");
748 } else
749 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
750
751 if (!err)
752 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
753
754 return err;
755 }
756
757 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
758 {
759 struct mlx4_en_priv *priv = netdev_priv(dev);
760 struct mlx4_en_dev *mdev = priv->mdev;
761 struct sockaddr *saddr = addr;
762 unsigned char new_mac[ETH_ALEN + 2];
763 int err;
764
765 if (!is_valid_ether_addr(saddr->sa_data))
766 return -EADDRNOTAVAIL;
767
768 mutex_lock(&mdev->state_lock);
769 memcpy(new_mac, saddr->sa_data, ETH_ALEN);
770 err = mlx4_en_do_set_mac(priv, new_mac);
771 if (!err)
772 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
773 mutex_unlock(&mdev->state_lock);
774
775 return err;
776 }
777
778 static void mlx4_en_clear_list(struct net_device *dev)
779 {
780 struct mlx4_en_priv *priv = netdev_priv(dev);
781 struct mlx4_en_mc_list *tmp, *mc_to_del;
782
783 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
784 list_del(&mc_to_del->list);
785 kfree(mc_to_del);
786 }
787 }
788
789 static void mlx4_en_cache_mclist(struct net_device *dev)
790 {
791 struct mlx4_en_priv *priv = netdev_priv(dev);
792 struct netdev_hw_addr *ha;
793 struct mlx4_en_mc_list *tmp;
794
795 mlx4_en_clear_list(dev);
796 netdev_for_each_mc_addr(ha, dev) {
797 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
798 if (!tmp) {
799 mlx4_en_clear_list(dev);
800 return;
801 }
802 memcpy(tmp->addr, ha->addr, ETH_ALEN);
803 list_add_tail(&tmp->list, &priv->mc_list);
804 }
805 }
806
807 static void update_mclist_flags(struct mlx4_en_priv *priv,
808 struct list_head *dst,
809 struct list_head *src)
810 {
811 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
812 bool found;
813
814 /* Find all the entries that should be removed from dst,
815 * These are the entries that are not found in src
816 */
817 list_for_each_entry(dst_tmp, dst, list) {
818 found = false;
819 list_for_each_entry(src_tmp, src, list) {
820 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
821 found = true;
822 break;
823 }
824 }
825 if (!found)
826 dst_tmp->action = MCLIST_REM;
827 }
828
829 /* Add entries that exist in src but not in dst
830 * mark them as need to add
831 */
832 list_for_each_entry(src_tmp, src, list) {
833 found = false;
834 list_for_each_entry(dst_tmp, dst, list) {
835 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
836 dst_tmp->action = MCLIST_NONE;
837 found = true;
838 break;
839 }
840 }
841 if (!found) {
842 new_mc = kmemdup(src_tmp,
843 sizeof(struct mlx4_en_mc_list),
844 GFP_KERNEL);
845 if (!new_mc)
846 return;
847
848 new_mc->action = MCLIST_ADD;
849 list_add_tail(&new_mc->list, dst);
850 }
851 }
852 }
853
854 static void mlx4_en_set_rx_mode(struct net_device *dev)
855 {
856 struct mlx4_en_priv *priv = netdev_priv(dev);
857
858 if (!priv->port_up)
859 return;
860
861 queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
862 }
863
864 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
865 struct mlx4_en_dev *mdev)
866 {
867 int err = 0;
868
869 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
870 if (netif_msg_rx_status(priv))
871 en_warn(priv, "Entering promiscuous mode\n");
872 priv->flags |= MLX4_EN_FLAG_PROMISC;
873
874 /* Enable promiscouos mode */
875 switch (mdev->dev->caps.steering_mode) {
876 case MLX4_STEERING_MODE_DEVICE_MANAGED:
877 err = mlx4_flow_steer_promisc_add(mdev->dev,
878 priv->port,
879 priv->base_qpn,
880 MLX4_FS_ALL_DEFAULT);
881 if (err)
882 en_err(priv, "Failed enabling promiscuous mode\n");
883 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
884 break;
885
886 case MLX4_STEERING_MODE_B0:
887 err = mlx4_unicast_promisc_add(mdev->dev,
888 priv->base_qpn,
889 priv->port);
890 if (err)
891 en_err(priv, "Failed enabling unicast promiscuous mode\n");
892
893 /* Add the default qp number as multicast
894 * promisc
895 */
896 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
897 err = mlx4_multicast_promisc_add(mdev->dev,
898 priv->base_qpn,
899 priv->port);
900 if (err)
901 en_err(priv, "Failed enabling multicast promiscuous mode\n");
902 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
903 }
904 break;
905
906 case MLX4_STEERING_MODE_A0:
907 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
908 priv->port,
909 priv->base_qpn,
910 1);
911 if (err)
912 en_err(priv, "Failed enabling promiscuous mode\n");
913 break;
914 }
915
916 /* Disable port multicast filter (unconditionally) */
917 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
918 0, MLX4_MCAST_DISABLE);
919 if (err)
920 en_err(priv, "Failed disabling multicast filter\n");
921 }
922 }
923
924 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
925 struct mlx4_en_dev *mdev)
926 {
927 int err = 0;
928
929 if (netif_msg_rx_status(priv))
930 en_warn(priv, "Leaving promiscuous mode\n");
931 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
932
933 /* Disable promiscouos mode */
934 switch (mdev->dev->caps.steering_mode) {
935 case MLX4_STEERING_MODE_DEVICE_MANAGED:
936 err = mlx4_flow_steer_promisc_remove(mdev->dev,
937 priv->port,
938 MLX4_FS_ALL_DEFAULT);
939 if (err)
940 en_err(priv, "Failed disabling promiscuous mode\n");
941 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
942 break;
943
944 case MLX4_STEERING_MODE_B0:
945 err = mlx4_unicast_promisc_remove(mdev->dev,
946 priv->base_qpn,
947 priv->port);
948 if (err)
949 en_err(priv, "Failed disabling unicast promiscuous mode\n");
950 /* Disable Multicast promisc */
951 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
952 err = mlx4_multicast_promisc_remove(mdev->dev,
953 priv->base_qpn,
954 priv->port);
955 if (err)
956 en_err(priv, "Failed disabling multicast promiscuous mode\n");
957 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
958 }
959 break;
960
961 case MLX4_STEERING_MODE_A0:
962 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
963 priv->port,
964 priv->base_qpn, 0);
965 if (err)
966 en_err(priv, "Failed disabling promiscuous mode\n");
967 break;
968 }
969 }
970
971 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
972 struct net_device *dev,
973 struct mlx4_en_dev *mdev)
974 {
975 struct mlx4_en_mc_list *mclist, *tmp;
976 u64 mcast_addr = 0;
977 u8 mc_list[16] = {0};
978 int err = 0;
979
980 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
981 if (dev->flags & IFF_ALLMULTI) {
982 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
983 0, MLX4_MCAST_DISABLE);
984 if (err)
985 en_err(priv, "Failed disabling multicast filter\n");
986
987 /* Add the default qp number as multicast promisc */
988 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
989 switch (mdev->dev->caps.steering_mode) {
990 case MLX4_STEERING_MODE_DEVICE_MANAGED:
991 err = mlx4_flow_steer_promisc_add(mdev->dev,
992 priv->port,
993 priv->base_qpn,
994 MLX4_FS_MC_DEFAULT);
995 break;
996
997 case MLX4_STEERING_MODE_B0:
998 err = mlx4_multicast_promisc_add(mdev->dev,
999 priv->base_qpn,
1000 priv->port);
1001 break;
1002
1003 case MLX4_STEERING_MODE_A0:
1004 break;
1005 }
1006 if (err)
1007 en_err(priv, "Failed entering multicast promisc mode\n");
1008 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1009 }
1010 } else {
1011 /* Disable Multicast promisc */
1012 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1013 switch (mdev->dev->caps.steering_mode) {
1014 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1015 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1016 priv->port,
1017 MLX4_FS_MC_DEFAULT);
1018 break;
1019
1020 case MLX4_STEERING_MODE_B0:
1021 err = mlx4_multicast_promisc_remove(mdev->dev,
1022 priv->base_qpn,
1023 priv->port);
1024 break;
1025
1026 case MLX4_STEERING_MODE_A0:
1027 break;
1028 }
1029 if (err)
1030 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1031 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1032 }
1033
1034 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1035 0, MLX4_MCAST_DISABLE);
1036 if (err)
1037 en_err(priv, "Failed disabling multicast filter\n");
1038
1039 /* Flush mcast filter and init it with broadcast address */
1040 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1041 1, MLX4_MCAST_CONFIG);
1042
1043 /* Update multicast list - we cache all addresses so they won't
1044 * change while HW is updated holding the command semaphor */
1045 netif_addr_lock_bh(dev);
1046 mlx4_en_cache_mclist(dev);
1047 netif_addr_unlock_bh(dev);
1048 list_for_each_entry(mclist, &priv->mc_list, list) {
1049 mcast_addr = mlx4_mac_to_u64(mclist->addr);
1050 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1051 mcast_addr, 0, MLX4_MCAST_CONFIG);
1052 }
1053 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1054 0, MLX4_MCAST_ENABLE);
1055 if (err)
1056 en_err(priv, "Failed enabling multicast filter\n");
1057
1058 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1059 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1060 if (mclist->action == MCLIST_REM) {
1061 /* detach this address and delete from list */
1062 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1063 mc_list[5] = priv->port;
1064 err = mlx4_multicast_detach(mdev->dev,
1065 &priv->rss_map.indir_qp,
1066 mc_list,
1067 MLX4_PROT_ETH,
1068 mclist->reg_id);
1069 if (err)
1070 en_err(priv, "Fail to detach multicast address\n");
1071
1072 if (mclist->tunnel_reg_id) {
1073 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1074 if (err)
1075 en_err(priv, "Failed to detach multicast address\n");
1076 }
1077
1078 /* remove from list */
1079 list_del(&mclist->list);
1080 kfree(mclist);
1081 } else if (mclist->action == MCLIST_ADD) {
1082 /* attach the address */
1083 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1084 /* needed for B0 steering support */
1085 mc_list[5] = priv->port;
1086 err = mlx4_multicast_attach(mdev->dev,
1087 &priv->rss_map.indir_qp,
1088 mc_list,
1089 priv->port, 0,
1090 MLX4_PROT_ETH,
1091 &mclist->reg_id);
1092 if (err)
1093 en_err(priv, "Fail to attach multicast address\n");
1094
1095 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1096 &mclist->tunnel_reg_id);
1097 if (err)
1098 en_err(priv, "Failed to attach multicast address\n");
1099 }
1100 }
1101 }
1102 }
1103
1104 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1105 struct net_device *dev,
1106 struct mlx4_en_dev *mdev)
1107 {
1108 struct netdev_hw_addr *ha;
1109 struct mlx4_mac_entry *entry;
1110 struct hlist_node *tmp;
1111 bool found;
1112 u64 mac;
1113 int err = 0;
1114 struct hlist_head *bucket;
1115 unsigned int i;
1116 int removed = 0;
1117 u32 prev_flags;
1118
1119 /* Note that we do not need to protect our mac_hash traversal with rcu,
1120 * since all modification code is protected by mdev->state_lock
1121 */
1122
1123 /* find what to remove */
1124 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1125 bucket = &priv->mac_hash[i];
1126 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1127 found = false;
1128 netdev_for_each_uc_addr(ha, dev) {
1129 if (ether_addr_equal_64bits(entry->mac,
1130 ha->addr)) {
1131 found = true;
1132 break;
1133 }
1134 }
1135
1136 /* MAC address of the port is not in uc list */
1137 if (ether_addr_equal_64bits(entry->mac,
1138 priv->current_mac))
1139 found = true;
1140
1141 if (!found) {
1142 mac = mlx4_mac_to_u64(entry->mac);
1143 mlx4_en_uc_steer_release(priv, entry->mac,
1144 priv->base_qpn,
1145 entry->reg_id);
1146 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1147
1148 hlist_del_rcu(&entry->hlist);
1149 kfree_rcu(entry, rcu);
1150 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1151 entry->mac, priv->port);
1152 ++removed;
1153 }
1154 }
1155 }
1156
1157 /* if we didn't remove anything, there is no use in trying to add
1158 * again once we are in a forced promisc mode state
1159 */
1160 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1161 return;
1162
1163 prev_flags = priv->flags;
1164 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1165
1166 /* find what to add */
1167 netdev_for_each_uc_addr(ha, dev) {
1168 found = false;
1169 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1170 hlist_for_each_entry(entry, bucket, hlist) {
1171 if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1172 found = true;
1173 break;
1174 }
1175 }
1176
1177 if (!found) {
1178 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1179 if (!entry) {
1180 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1181 ha->addr, priv->port);
1182 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1183 break;
1184 }
1185 mac = mlx4_mac_to_u64(ha->addr);
1186 memcpy(entry->mac, ha->addr, ETH_ALEN);
1187 err = mlx4_register_mac(mdev->dev, priv->port, mac);
1188 if (err < 0) {
1189 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1190 ha->addr, priv->port, err);
1191 kfree(entry);
1192 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1193 break;
1194 }
1195 err = mlx4_en_uc_steer_add(priv, ha->addr,
1196 &priv->base_qpn,
1197 &entry->reg_id);
1198 if (err) {
1199 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1200 ha->addr, priv->port, err);
1201 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1202 kfree(entry);
1203 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1204 break;
1205 } else {
1206 unsigned int mac_hash;
1207 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1208 ha->addr, priv->port);
1209 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1210 bucket = &priv->mac_hash[mac_hash];
1211 hlist_add_head_rcu(&entry->hlist, bucket);
1212 }
1213 }
1214 }
1215
1216 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1217 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1218 priv->port);
1219 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1220 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1221 priv->port);
1222 }
1223 }
1224
1225 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1226 {
1227 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1228 rx_mode_task);
1229 struct mlx4_en_dev *mdev = priv->mdev;
1230 struct net_device *dev = priv->dev;
1231
1232 mutex_lock(&mdev->state_lock);
1233 if (!mdev->device_up) {
1234 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1235 goto out;
1236 }
1237 if (!priv->port_up) {
1238 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1239 goto out;
1240 }
1241
1242 if (!netif_carrier_ok(dev)) {
1243 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1244 if (priv->port_state.link_state) {
1245 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1246 netif_carrier_on(dev);
1247 en_dbg(LINK, priv, "Link Up\n");
1248 }
1249 }
1250 }
1251
1252 if (dev->priv_flags & IFF_UNICAST_FLT)
1253 mlx4_en_do_uc_filter(priv, dev, mdev);
1254
1255 /* Promsicuous mode: disable all filters */
1256 if ((dev->flags & IFF_PROMISC) ||
1257 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1258 mlx4_en_set_promisc_mode(priv, mdev);
1259 goto out;
1260 }
1261
1262 /* Not in promiscuous mode */
1263 if (priv->flags & MLX4_EN_FLAG_PROMISC)
1264 mlx4_en_clear_promisc_mode(priv, mdev);
1265
1266 mlx4_en_do_multicast(priv, dev, mdev);
1267 out:
1268 mutex_unlock(&mdev->state_lock);
1269 }
1270
1271 #ifdef CONFIG_NET_POLL_CONTROLLER
1272 static void mlx4_en_netpoll(struct net_device *dev)
1273 {
1274 struct mlx4_en_priv *priv = netdev_priv(dev);
1275 struct mlx4_en_cq *cq;
1276 int i;
1277
1278 for (i = 0; i < priv->rx_ring_num; i++) {
1279 cq = priv->rx_cq[i];
1280 napi_schedule(&cq->napi);
1281 }
1282 }
1283 #endif
1284
1285 static void mlx4_en_tx_timeout(struct net_device *dev)
1286 {
1287 struct mlx4_en_priv *priv = netdev_priv(dev);
1288 struct mlx4_en_dev *mdev = priv->mdev;
1289 int i;
1290
1291 if (netif_msg_timer(priv))
1292 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1293
1294 for (i = 0; i < priv->tx_ring_num; i++) {
1295 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1296 continue;
1297 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1298 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1299 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1300 }
1301
1302 priv->port_stats.tx_timeout++;
1303 en_dbg(DRV, priv, "Scheduling watchdog\n");
1304 queue_work(mdev->workqueue, &priv->watchdog_task);
1305 }
1306
1307
1308 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1309 {
1310 struct mlx4_en_priv *priv = netdev_priv(dev);
1311
1312 spin_lock_bh(&priv->stats_lock);
1313 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1314 spin_unlock_bh(&priv->stats_lock);
1315
1316 return &priv->ret_stats;
1317 }
1318
1319 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1320 {
1321 struct mlx4_en_cq *cq;
1322 int i;
1323
1324 /* If we haven't received a specific coalescing setting
1325 * (module param), we set the moderation parameters as follows:
1326 * - moder_cnt is set to the number of mtu sized packets to
1327 * satisfy our coalescing target.
1328 * - moder_time is set to a fixed value.
1329 */
1330 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1331 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1332 priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1333 priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1334 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1335 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1336
1337 /* Setup cq moderation params */
1338 for (i = 0; i < priv->rx_ring_num; i++) {
1339 cq = priv->rx_cq[i];
1340 cq->moder_cnt = priv->rx_frames;
1341 cq->moder_time = priv->rx_usecs;
1342 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1343 priv->last_moder_packets[i] = 0;
1344 priv->last_moder_bytes[i] = 0;
1345 }
1346
1347 for (i = 0; i < priv->tx_ring_num; i++) {
1348 cq = priv->tx_cq[i];
1349 cq->moder_cnt = priv->tx_frames;
1350 cq->moder_time = priv->tx_usecs;
1351 }
1352
1353 /* Reset auto-moderation params */
1354 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1355 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1356 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1357 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1358 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1359 priv->adaptive_rx_coal = 1;
1360 priv->last_moder_jiffies = 0;
1361 priv->last_moder_tx_packets = 0;
1362 }
1363
1364 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1365 {
1366 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1367 struct mlx4_en_cq *cq;
1368 unsigned long packets;
1369 unsigned long rate;
1370 unsigned long avg_pkt_size;
1371 unsigned long rx_packets;
1372 unsigned long rx_bytes;
1373 unsigned long rx_pkt_diff;
1374 int moder_time;
1375 int ring, err;
1376
1377 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1378 return;
1379
1380 for (ring = 0; ring < priv->rx_ring_num; ring++) {
1381 spin_lock_bh(&priv->stats_lock);
1382 rx_packets = priv->rx_ring[ring]->packets;
1383 rx_bytes = priv->rx_ring[ring]->bytes;
1384 spin_unlock_bh(&priv->stats_lock);
1385
1386 rx_pkt_diff = ((unsigned long) (rx_packets -
1387 priv->last_moder_packets[ring]));
1388 packets = rx_pkt_diff;
1389 rate = packets * HZ / period;
1390 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1391 priv->last_moder_bytes[ring])) / packets : 0;
1392
1393 /* Apply auto-moderation only when packet rate
1394 * exceeds a rate that it matters */
1395 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1396 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1397 if (rate < priv->pkt_rate_low)
1398 moder_time = priv->rx_usecs_low;
1399 else if (rate > priv->pkt_rate_high)
1400 moder_time = priv->rx_usecs_high;
1401 else
1402 moder_time = (rate - priv->pkt_rate_low) *
1403 (priv->rx_usecs_high - priv->rx_usecs_low) /
1404 (priv->pkt_rate_high - priv->pkt_rate_low) +
1405 priv->rx_usecs_low;
1406 } else {
1407 moder_time = priv->rx_usecs_low;
1408 }
1409
1410 if (moder_time != priv->last_moder_time[ring]) {
1411 priv->last_moder_time[ring] = moder_time;
1412 cq = priv->rx_cq[ring];
1413 cq->moder_time = moder_time;
1414 cq->moder_cnt = priv->rx_frames;
1415 err = mlx4_en_set_cq_moder(priv, cq);
1416 if (err)
1417 en_err(priv, "Failed modifying moderation for cq:%d\n",
1418 ring);
1419 }
1420 priv->last_moder_packets[ring] = rx_packets;
1421 priv->last_moder_bytes[ring] = rx_bytes;
1422 }
1423
1424 priv->last_moder_jiffies = jiffies;
1425 }
1426
1427 static void mlx4_en_do_get_stats(struct work_struct *work)
1428 {
1429 struct delayed_work *delay = to_delayed_work(work);
1430 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1431 stats_task);
1432 struct mlx4_en_dev *mdev = priv->mdev;
1433 int err;
1434
1435 mutex_lock(&mdev->state_lock);
1436 if (mdev->device_up) {
1437 if (priv->port_up) {
1438 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1439 if (err)
1440 en_dbg(HW, priv, "Could not update stats\n");
1441
1442 mlx4_en_auto_moderation(priv);
1443 }
1444
1445 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1446 }
1447 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1448 mlx4_en_do_set_mac(priv, priv->current_mac);
1449 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1450 }
1451 mutex_unlock(&mdev->state_lock);
1452 }
1453
1454 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1455 * periodically
1456 */
1457 static void mlx4_en_service_task(struct work_struct *work)
1458 {
1459 struct delayed_work *delay = to_delayed_work(work);
1460 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1461 service_task);
1462 struct mlx4_en_dev *mdev = priv->mdev;
1463
1464 mutex_lock(&mdev->state_lock);
1465 if (mdev->device_up) {
1466 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1467 mlx4_en_ptp_overflow_check(mdev);
1468
1469 mlx4_en_recover_from_oom(priv);
1470 queue_delayed_work(mdev->workqueue, &priv->service_task,
1471 SERVICE_TASK_DELAY);
1472 }
1473 mutex_unlock(&mdev->state_lock);
1474 }
1475
1476 static void mlx4_en_linkstate(struct work_struct *work)
1477 {
1478 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1479 linkstate_task);
1480 struct mlx4_en_dev *mdev = priv->mdev;
1481 int linkstate = priv->link_state;
1482
1483 mutex_lock(&mdev->state_lock);
1484 /* If observable port state changed set carrier state and
1485 * report to system log */
1486 if (priv->last_link_state != linkstate) {
1487 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1488 en_info(priv, "Link Down\n");
1489 netif_carrier_off(priv->dev);
1490 } else {
1491 en_info(priv, "Link Up\n");
1492 netif_carrier_on(priv->dev);
1493 }
1494 }
1495 priv->last_link_state = linkstate;
1496 mutex_unlock(&mdev->state_lock);
1497 }
1498
1499 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1500 {
1501 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1502 int numa_node = priv->mdev->dev->numa_node;
1503
1504 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1505 return -ENOMEM;
1506
1507 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1508 ring->affinity_mask);
1509 return 0;
1510 }
1511
1512 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1513 {
1514 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1515 }
1516
1517 int mlx4_en_start_port(struct net_device *dev)
1518 {
1519 struct mlx4_en_priv *priv = netdev_priv(dev);
1520 struct mlx4_en_dev *mdev = priv->mdev;
1521 struct mlx4_en_cq *cq;
1522 struct mlx4_en_tx_ring *tx_ring;
1523 int rx_index = 0;
1524 int tx_index = 0;
1525 int err = 0;
1526 int i;
1527 int j;
1528 u8 mc_list[16] = {0};
1529
1530 if (priv->port_up) {
1531 en_dbg(DRV, priv, "start port called while port already up\n");
1532 return 0;
1533 }
1534
1535 INIT_LIST_HEAD(&priv->mc_list);
1536 INIT_LIST_HEAD(&priv->curr_list);
1537 INIT_LIST_HEAD(&priv->ethtool_list);
1538 memset(&priv->ethtool_rules[0], 0,
1539 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1540
1541 /* Calculate Rx buf size */
1542 dev->mtu = min(dev->mtu, priv->max_mtu);
1543 mlx4_en_calc_rx_buf(dev);
1544 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1545
1546 /* Configure rx cq's and rings */
1547 err = mlx4_en_activate_rx_rings(priv);
1548 if (err) {
1549 en_err(priv, "Failed to activate RX rings\n");
1550 return err;
1551 }
1552 for (i = 0; i < priv->rx_ring_num; i++) {
1553 cq = priv->rx_cq[i];
1554
1555 mlx4_en_cq_init_lock(cq);
1556
1557 err = mlx4_en_init_affinity_hint(priv, i);
1558 if (err) {
1559 en_err(priv, "Failed preparing IRQ affinity hint\n");
1560 goto cq_err;
1561 }
1562
1563 err = mlx4_en_activate_cq(priv, cq, i);
1564 if (err) {
1565 en_err(priv, "Failed activating Rx CQ\n");
1566 mlx4_en_free_affinity_hint(priv, i);
1567 goto cq_err;
1568 }
1569
1570 for (j = 0; j < cq->size; j++) {
1571 struct mlx4_cqe *cqe = NULL;
1572
1573 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1574 priv->cqe_factor;
1575 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1576 }
1577
1578 err = mlx4_en_set_cq_moder(priv, cq);
1579 if (err) {
1580 en_err(priv, "Failed setting cq moderation parameters\n");
1581 mlx4_en_deactivate_cq(priv, cq);
1582 mlx4_en_free_affinity_hint(priv, i);
1583 goto cq_err;
1584 }
1585 mlx4_en_arm_cq(priv, cq);
1586 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1587 ++rx_index;
1588 }
1589
1590 /* Set qp number */
1591 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1592 err = mlx4_en_get_qp(priv);
1593 if (err) {
1594 en_err(priv, "Failed getting eth qp\n");
1595 goto cq_err;
1596 }
1597 mdev->mac_removed[priv->port] = 0;
1598
1599 err = mlx4_en_config_rss_steer(priv);
1600 if (err) {
1601 en_err(priv, "Failed configuring rss steering\n");
1602 goto mac_err;
1603 }
1604
1605 err = mlx4_en_create_drop_qp(priv);
1606 if (err)
1607 goto rss_err;
1608
1609 /* Configure tx cq's and rings */
1610 for (i = 0; i < priv->tx_ring_num; i++) {
1611 /* Configure cq */
1612 cq = priv->tx_cq[i];
1613 err = mlx4_en_activate_cq(priv, cq, i);
1614 if (err) {
1615 en_err(priv, "Failed allocating Tx CQ\n");
1616 goto tx_err;
1617 }
1618 err = mlx4_en_set_cq_moder(priv, cq);
1619 if (err) {
1620 en_err(priv, "Failed setting cq moderation parameters\n");
1621 mlx4_en_deactivate_cq(priv, cq);
1622 goto tx_err;
1623 }
1624 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1625 cq->buf->wqe_index = cpu_to_be16(0xffff);
1626
1627 /* Configure ring */
1628 tx_ring = priv->tx_ring[i];
1629 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1630 i / priv->num_tx_rings_p_up);
1631 if (err) {
1632 en_err(priv, "Failed allocating Tx ring\n");
1633 mlx4_en_deactivate_cq(priv, cq);
1634 goto tx_err;
1635 }
1636 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1637
1638 /* Arm CQ for TX completions */
1639 mlx4_en_arm_cq(priv, cq);
1640
1641 /* Set initial ownership of all Tx TXBBs to SW (1) */
1642 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1643 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1644 ++tx_index;
1645 }
1646
1647 /* Configure port */
1648 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1649 priv->rx_skb_size + ETH_FCS_LEN,
1650 priv->prof->tx_pause,
1651 priv->prof->tx_ppp,
1652 priv->prof->rx_pause,
1653 priv->prof->rx_ppp);
1654 if (err) {
1655 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1656 priv->port, err);
1657 goto tx_err;
1658 }
1659 /* Set default qp number */
1660 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1661 if (err) {
1662 en_err(priv, "Failed setting default qp numbers\n");
1663 goto tx_err;
1664 }
1665
1666 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1667 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1668 if (err) {
1669 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1670 err);
1671 goto tx_err;
1672 }
1673 }
1674
1675 /* Init port */
1676 en_dbg(HW, priv, "Initializing port\n");
1677 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1678 if (err) {
1679 en_err(priv, "Failed Initializing port\n");
1680 goto tx_err;
1681 }
1682
1683 /* Attach rx QP to bradcast address */
1684 memset(&mc_list[10], 0xff, ETH_ALEN);
1685 mc_list[5] = priv->port; /* needed for B0 steering support */
1686 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1687 priv->port, 0, MLX4_PROT_ETH,
1688 &priv->broadcast_id))
1689 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1690
1691 /* Must redo promiscuous mode setup. */
1692 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1693
1694 /* Schedule multicast task to populate multicast list */
1695 queue_work(mdev->workqueue, &priv->rx_mode_task);
1696
1697 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1698
1699 #ifdef CONFIG_MLX4_EN_VXLAN
1700 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1701 vxlan_get_rx_port(dev);
1702 #endif
1703 priv->port_up = true;
1704 netif_tx_start_all_queues(dev);
1705 netif_device_attach(dev);
1706
1707 return 0;
1708
1709 tx_err:
1710 while (tx_index--) {
1711 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1712 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1713 }
1714 mlx4_en_destroy_drop_qp(priv);
1715 rss_err:
1716 mlx4_en_release_rss_steer(priv);
1717 mac_err:
1718 mlx4_en_put_qp(priv);
1719 cq_err:
1720 while (rx_index--) {
1721 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1722 mlx4_en_free_affinity_hint(priv, i);
1723 }
1724 for (i = 0; i < priv->rx_ring_num; i++)
1725 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1726
1727 return err; /* need to close devices */
1728 }
1729
1730
1731 void mlx4_en_stop_port(struct net_device *dev, int detach)
1732 {
1733 struct mlx4_en_priv *priv = netdev_priv(dev);
1734 struct mlx4_en_dev *mdev = priv->mdev;
1735 struct mlx4_en_mc_list *mclist, *tmp;
1736 struct ethtool_flow_id *flow, *tmp_flow;
1737 int i;
1738 u8 mc_list[16] = {0};
1739
1740 if (!priv->port_up) {
1741 en_dbg(DRV, priv, "stop port called while port already down\n");
1742 return;
1743 }
1744
1745 /* close port*/
1746 mlx4_CLOSE_PORT(mdev->dev, priv->port);
1747
1748 /* Synchronize with tx routine */
1749 netif_tx_lock_bh(dev);
1750 if (detach)
1751 netif_device_detach(dev);
1752 netif_tx_stop_all_queues(dev);
1753 netif_tx_unlock_bh(dev);
1754
1755 netif_tx_disable(dev);
1756
1757 /* Set port as not active */
1758 priv->port_up = false;
1759
1760 /* Promsicuous mode */
1761 if (mdev->dev->caps.steering_mode ==
1762 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1763 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1764 MLX4_EN_FLAG_MC_PROMISC);
1765 mlx4_flow_steer_promisc_remove(mdev->dev,
1766 priv->port,
1767 MLX4_FS_ALL_DEFAULT);
1768 mlx4_flow_steer_promisc_remove(mdev->dev,
1769 priv->port,
1770 MLX4_FS_MC_DEFAULT);
1771 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1772 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1773
1774 /* Disable promiscouos mode */
1775 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1776 priv->port);
1777
1778 /* Disable Multicast promisc */
1779 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1780 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1781 priv->port);
1782 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1783 }
1784 }
1785
1786 /* Detach All multicasts */
1787 memset(&mc_list[10], 0xff, ETH_ALEN);
1788 mc_list[5] = priv->port; /* needed for B0 steering support */
1789 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1790 MLX4_PROT_ETH, priv->broadcast_id);
1791 list_for_each_entry(mclist, &priv->curr_list, list) {
1792 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1793 mc_list[5] = priv->port;
1794 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1795 mc_list, MLX4_PROT_ETH, mclist->reg_id);
1796 if (mclist->tunnel_reg_id)
1797 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1798 }
1799 mlx4_en_clear_list(dev);
1800 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1801 list_del(&mclist->list);
1802 kfree(mclist);
1803 }
1804
1805 /* Flush multicast filter */
1806 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1807
1808 /* Remove flow steering rules for the port*/
1809 if (mdev->dev->caps.steering_mode ==
1810 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1811 ASSERT_RTNL();
1812 list_for_each_entry_safe(flow, tmp_flow,
1813 &priv->ethtool_list, list) {
1814 mlx4_flow_detach(mdev->dev, flow->id);
1815 list_del(&flow->list);
1816 }
1817 }
1818
1819 mlx4_en_destroy_drop_qp(priv);
1820
1821 /* Free TX Rings */
1822 for (i = 0; i < priv->tx_ring_num; i++) {
1823 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1824 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1825 }
1826 msleep(10);
1827
1828 for (i = 0; i < priv->tx_ring_num; i++)
1829 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1830
1831 /* Free RSS qps */
1832 mlx4_en_release_rss_steer(priv);
1833
1834 /* Unregister Mac address for the port */
1835 mlx4_en_put_qp(priv);
1836 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1837 mdev->mac_removed[priv->port] = 1;
1838
1839 /* Free RX Rings */
1840 for (i = 0; i < priv->rx_ring_num; i++) {
1841 struct mlx4_en_cq *cq = priv->rx_cq[i];
1842
1843 local_bh_disable();
1844 while (!mlx4_en_cq_lock_napi(cq)) {
1845 pr_info("CQ %d locked\n", i);
1846 mdelay(1);
1847 }
1848 local_bh_enable();
1849
1850 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state))
1851 msleep(1);
1852 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1853 mlx4_en_deactivate_cq(priv, cq);
1854
1855 mlx4_en_free_affinity_hint(priv, i);
1856 }
1857 }
1858
1859 static void mlx4_en_restart(struct work_struct *work)
1860 {
1861 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1862 watchdog_task);
1863 struct mlx4_en_dev *mdev = priv->mdev;
1864 struct net_device *dev = priv->dev;
1865
1866 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1867
1868 mutex_lock(&mdev->state_lock);
1869 if (priv->port_up) {
1870 mlx4_en_stop_port(dev, 1);
1871 if (mlx4_en_start_port(dev))
1872 en_err(priv, "Failed restarting port %d\n", priv->port);
1873 }
1874 mutex_unlock(&mdev->state_lock);
1875 }
1876
1877 static void mlx4_en_clear_stats(struct net_device *dev)
1878 {
1879 struct mlx4_en_priv *priv = netdev_priv(dev);
1880 struct mlx4_en_dev *mdev = priv->mdev;
1881 int i;
1882
1883 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1884 en_dbg(HW, priv, "Failed dumping statistics\n");
1885
1886 memset(&priv->stats, 0, sizeof(priv->stats));
1887 memset(&priv->pstats, 0, sizeof(priv->pstats));
1888 memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1889 memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1890
1891 for (i = 0; i < priv->tx_ring_num; i++) {
1892 priv->tx_ring[i]->bytes = 0;
1893 priv->tx_ring[i]->packets = 0;
1894 priv->tx_ring[i]->tx_csum = 0;
1895 }
1896 for (i = 0; i < priv->rx_ring_num; i++) {
1897 priv->rx_ring[i]->bytes = 0;
1898 priv->rx_ring[i]->packets = 0;
1899 priv->rx_ring[i]->csum_ok = 0;
1900 priv->rx_ring[i]->csum_none = 0;
1901 }
1902 }
1903
1904 static int mlx4_en_open(struct net_device *dev)
1905 {
1906 struct mlx4_en_priv *priv = netdev_priv(dev);
1907 struct mlx4_en_dev *mdev = priv->mdev;
1908 int err = 0;
1909
1910 mutex_lock(&mdev->state_lock);
1911
1912 if (!mdev->device_up) {
1913 en_err(priv, "Cannot open - device down/disabled\n");
1914 err = -EBUSY;
1915 goto out;
1916 }
1917
1918 /* Reset HW statistics and SW counters */
1919 mlx4_en_clear_stats(dev);
1920
1921 err = mlx4_en_start_port(dev);
1922 if (err)
1923 en_err(priv, "Failed starting port:%d\n", priv->port);
1924
1925 out:
1926 mutex_unlock(&mdev->state_lock);
1927 return err;
1928 }
1929
1930
1931 static int mlx4_en_close(struct net_device *dev)
1932 {
1933 struct mlx4_en_priv *priv = netdev_priv(dev);
1934 struct mlx4_en_dev *mdev = priv->mdev;
1935
1936 en_dbg(IFDOWN, priv, "Close port called\n");
1937
1938 mutex_lock(&mdev->state_lock);
1939
1940 mlx4_en_stop_port(dev, 0);
1941 netif_carrier_off(dev);
1942
1943 mutex_unlock(&mdev->state_lock);
1944 return 0;
1945 }
1946
1947 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1948 {
1949 int i;
1950
1951 #ifdef CONFIG_RFS_ACCEL
1952 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1953 priv->dev->rx_cpu_rmap = NULL;
1954 #endif
1955
1956 for (i = 0; i < priv->tx_ring_num; i++) {
1957 if (priv->tx_ring && priv->tx_ring[i])
1958 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1959 if (priv->tx_cq && priv->tx_cq[i])
1960 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1961 }
1962
1963 for (i = 0; i < priv->rx_ring_num; i++) {
1964 if (priv->rx_ring[i])
1965 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1966 priv->prof->rx_ring_size, priv->stride);
1967 if (priv->rx_cq[i])
1968 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1969 }
1970
1971 if (priv->base_tx_qpn) {
1972 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1973 priv->base_tx_qpn = 0;
1974 }
1975 }
1976
1977 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1978 {
1979 struct mlx4_en_port_profile *prof = priv->prof;
1980 int i;
1981 int err;
1982 int node;
1983
1984 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1985 if (err) {
1986 en_err(priv, "failed reserving range for TX rings\n");
1987 return err;
1988 }
1989
1990 /* Create tx Rings */
1991 for (i = 0; i < priv->tx_ring_num; i++) {
1992 node = cpu_to_node(i % num_online_cpus());
1993 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1994 prof->tx_ring_size, i, TX, node))
1995 goto err;
1996
1997 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1998 priv->base_tx_qpn + i,
1999 prof->tx_ring_size, TXBB_SIZE,
2000 node, i))
2001 goto err;
2002 }
2003
2004 /* Create rx Rings */
2005 for (i = 0; i < priv->rx_ring_num; i++) {
2006 node = cpu_to_node(i % num_online_cpus());
2007 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2008 prof->rx_ring_size, i, RX, node))
2009 goto err;
2010
2011 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2012 prof->rx_ring_size, priv->stride,
2013 node))
2014 goto err;
2015 }
2016
2017 #ifdef CONFIG_RFS_ACCEL
2018 if (priv->mdev->dev->caps.comp_pool) {
2019 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
2020 if (!priv->dev->rx_cpu_rmap)
2021 goto err;
2022 }
2023 #endif
2024
2025 return 0;
2026
2027 err:
2028 en_err(priv, "Failed to allocate NIC resources\n");
2029 for (i = 0; i < priv->rx_ring_num; i++) {
2030 if (priv->rx_ring[i])
2031 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2032 prof->rx_ring_size,
2033 priv->stride);
2034 if (priv->rx_cq[i])
2035 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2036 }
2037 for (i = 0; i < priv->tx_ring_num; i++) {
2038 if (priv->tx_ring[i])
2039 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2040 if (priv->tx_cq[i])
2041 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2042 }
2043 return -ENOMEM;
2044 }
2045
2046
2047 void mlx4_en_destroy_netdev(struct net_device *dev)
2048 {
2049 struct mlx4_en_priv *priv = netdev_priv(dev);
2050 struct mlx4_en_dev *mdev = priv->mdev;
2051
2052 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2053
2054 /* Unregister device - this will close the port if it was up */
2055 if (priv->registered)
2056 unregister_netdev(dev);
2057
2058 if (priv->allocated)
2059 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2060
2061 cancel_delayed_work(&priv->stats_task);
2062 cancel_delayed_work(&priv->service_task);
2063 /* flush any pending task for this netdev */
2064 flush_workqueue(mdev->workqueue);
2065
2066 /* Detach the netdev so tasks would not attempt to access it */
2067 mutex_lock(&mdev->state_lock);
2068 mdev->pndev[priv->port] = NULL;
2069 mutex_unlock(&mdev->state_lock);
2070
2071 mlx4_en_free_resources(priv);
2072
2073 kfree(priv->tx_ring);
2074 kfree(priv->tx_cq);
2075
2076 free_netdev(dev);
2077 }
2078
2079 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2080 {
2081 struct mlx4_en_priv *priv = netdev_priv(dev);
2082 struct mlx4_en_dev *mdev = priv->mdev;
2083 int err = 0;
2084
2085 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2086 dev->mtu, new_mtu);
2087
2088 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2089 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2090 return -EPERM;
2091 }
2092 dev->mtu = new_mtu;
2093
2094 if (netif_running(dev)) {
2095 mutex_lock(&mdev->state_lock);
2096 if (!mdev->device_up) {
2097 /* NIC is probably restarting - let watchdog task reset
2098 * the port */
2099 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2100 } else {
2101 mlx4_en_stop_port(dev, 1);
2102 err = mlx4_en_start_port(dev);
2103 if (err) {
2104 en_err(priv, "Failed restarting port:%d\n",
2105 priv->port);
2106 queue_work(mdev->workqueue, &priv->watchdog_task);
2107 }
2108 }
2109 mutex_unlock(&mdev->state_lock);
2110 }
2111 return 0;
2112 }
2113
2114 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2115 {
2116 struct mlx4_en_priv *priv = netdev_priv(dev);
2117 struct mlx4_en_dev *mdev = priv->mdev;
2118 struct hwtstamp_config config;
2119
2120 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2121 return -EFAULT;
2122
2123 /* reserved for future extensions */
2124 if (config.flags)
2125 return -EINVAL;
2126
2127 /* device doesn't support time stamping */
2128 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2129 return -EINVAL;
2130
2131 /* TX HW timestamp */
2132 switch (config.tx_type) {
2133 case HWTSTAMP_TX_OFF:
2134 case HWTSTAMP_TX_ON:
2135 break;
2136 default:
2137 return -ERANGE;
2138 }
2139
2140 /* RX HW timestamp */
2141 switch (config.rx_filter) {
2142 case HWTSTAMP_FILTER_NONE:
2143 break;
2144 case HWTSTAMP_FILTER_ALL:
2145 case HWTSTAMP_FILTER_SOME:
2146 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2147 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2148 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2149 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2150 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2151 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2152 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2153 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2154 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2155 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2156 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2157 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2158 config.rx_filter = HWTSTAMP_FILTER_ALL;
2159 break;
2160 default:
2161 return -ERANGE;
2162 }
2163
2164 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
2165 config.tx_type = HWTSTAMP_TX_OFF;
2166 config.rx_filter = HWTSTAMP_FILTER_NONE;
2167 }
2168
2169 return copy_to_user(ifr->ifr_data, &config,
2170 sizeof(config)) ? -EFAULT : 0;
2171 }
2172
2173 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2174 {
2175 struct mlx4_en_priv *priv = netdev_priv(dev);
2176
2177 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2178 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2179 }
2180
2181 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2182 {
2183 switch (cmd) {
2184 case SIOCSHWTSTAMP:
2185 return mlx4_en_hwtstamp_set(dev, ifr);
2186 case SIOCGHWTSTAMP:
2187 return mlx4_en_hwtstamp_get(dev, ifr);
2188 default:
2189 return -EOPNOTSUPP;
2190 }
2191 }
2192
2193 static int mlx4_en_set_features(struct net_device *netdev,
2194 netdev_features_t features)
2195 {
2196 struct mlx4_en_priv *priv = netdev_priv(netdev);
2197
2198 if (features & NETIF_F_LOOPBACK)
2199 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2200 else
2201 priv->ctrl_flags &=
2202 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2203
2204 mlx4_en_update_loopback_state(netdev, features);
2205
2206 return 0;
2207
2208 }
2209
2210 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2211 {
2212 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2213 struct mlx4_en_dev *mdev = en_priv->mdev;
2214 u64 mac_u64 = mlx4_mac_to_u64(mac);
2215
2216 if (!is_valid_ether_addr(mac))
2217 return -EINVAL;
2218
2219 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2220 }
2221
2222 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2223 {
2224 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2225 struct mlx4_en_dev *mdev = en_priv->mdev;
2226
2227 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2228 }
2229
2230 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2231 {
2232 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2233 struct mlx4_en_dev *mdev = en_priv->mdev;
2234
2235 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2236 }
2237
2238 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2239 {
2240 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2241 struct mlx4_en_dev *mdev = en_priv->mdev;
2242
2243 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2244 }
2245
2246 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2247 {
2248 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2249 struct mlx4_en_dev *mdev = en_priv->mdev;
2250
2251 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2252 }
2253
2254 #define PORT_ID_BYTE_LEN 8
2255 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2256 struct netdev_phys_port_id *ppid)
2257 {
2258 struct mlx4_en_priv *priv = netdev_priv(dev);
2259 struct mlx4_dev *mdev = priv->mdev->dev;
2260 int i;
2261 u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2262
2263 if (!phys_port_id)
2264 return -EOPNOTSUPP;
2265
2266 ppid->id_len = sizeof(phys_port_id);
2267 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2268 ppid->id[i] = phys_port_id & 0xff;
2269 phys_port_id >>= 8;
2270 }
2271 return 0;
2272 }
2273
2274 #ifdef CONFIG_MLX4_EN_VXLAN
2275 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2276 {
2277 int ret;
2278 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2279 vxlan_add_task);
2280
2281 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2282 if (ret)
2283 goto out;
2284
2285 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2286 VXLAN_STEER_BY_OUTER_MAC, 1);
2287 out:
2288 if (ret) {
2289 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2290 return;
2291 }
2292
2293 /* set offloads */
2294 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2295 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
2296 priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
2297 priv->dev->features |= NETIF_F_GSO_UDP_TUNNEL;
2298 }
2299
2300 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2301 {
2302 int ret;
2303 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2304 vxlan_del_task);
2305 /* unset offloads */
2306 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2307 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL);
2308 priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL;
2309 priv->dev->features &= ~NETIF_F_GSO_UDP_TUNNEL;
2310
2311 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2312 VXLAN_STEER_BY_OUTER_MAC, 0);
2313 if (ret)
2314 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2315
2316 priv->vxlan_port = 0;
2317 }
2318
2319 static void mlx4_en_add_vxlan_port(struct net_device *dev,
2320 sa_family_t sa_family, __be16 port)
2321 {
2322 struct mlx4_en_priv *priv = netdev_priv(dev);
2323 __be16 current_port;
2324
2325 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2326 return;
2327
2328 if (sa_family == AF_INET6)
2329 return;
2330
2331 current_port = priv->vxlan_port;
2332 if (current_port && current_port != port) {
2333 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2334 ntohs(current_port), ntohs(port));
2335 return;
2336 }
2337
2338 priv->vxlan_port = port;
2339 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2340 }
2341
2342 static void mlx4_en_del_vxlan_port(struct net_device *dev,
2343 sa_family_t sa_family, __be16 port)
2344 {
2345 struct mlx4_en_priv *priv = netdev_priv(dev);
2346 __be16 current_port;
2347
2348 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2349 return;
2350
2351 if (sa_family == AF_INET6)
2352 return;
2353
2354 current_port = priv->vxlan_port;
2355 if (current_port != port) {
2356 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2357 return;
2358 }
2359
2360 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2361 }
2362
2363 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2364 struct net_device *dev,
2365 netdev_features_t features)
2366 {
2367 return vxlan_features_check(skb, features);
2368 }
2369 #endif
2370
2371 static const struct net_device_ops mlx4_netdev_ops = {
2372 .ndo_open = mlx4_en_open,
2373 .ndo_stop = mlx4_en_close,
2374 .ndo_start_xmit = mlx4_en_xmit,
2375 .ndo_select_queue = mlx4_en_select_queue,
2376 .ndo_get_stats = mlx4_en_get_stats,
2377 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2378 .ndo_set_mac_address = mlx4_en_set_mac,
2379 .ndo_validate_addr = eth_validate_addr,
2380 .ndo_change_mtu = mlx4_en_change_mtu,
2381 .ndo_do_ioctl = mlx4_en_ioctl,
2382 .ndo_tx_timeout = mlx4_en_tx_timeout,
2383 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2384 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2385 #ifdef CONFIG_NET_POLL_CONTROLLER
2386 .ndo_poll_controller = mlx4_en_netpoll,
2387 #endif
2388 .ndo_set_features = mlx4_en_set_features,
2389 .ndo_setup_tc = mlx4_en_setup_tc,
2390 #ifdef CONFIG_RFS_ACCEL
2391 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2392 #endif
2393 #ifdef CONFIG_NET_RX_BUSY_POLL
2394 .ndo_busy_poll = mlx4_en_low_latency_recv,
2395 #endif
2396 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2397 #ifdef CONFIG_MLX4_EN_VXLAN
2398 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
2399 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
2400 .ndo_features_check = mlx4_en_features_check,
2401 #endif
2402 };
2403
2404 static const struct net_device_ops mlx4_netdev_ops_master = {
2405 .ndo_open = mlx4_en_open,
2406 .ndo_stop = mlx4_en_close,
2407 .ndo_start_xmit = mlx4_en_xmit,
2408 .ndo_select_queue = mlx4_en_select_queue,
2409 .ndo_get_stats = mlx4_en_get_stats,
2410 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2411 .ndo_set_mac_address = mlx4_en_set_mac,
2412 .ndo_validate_addr = eth_validate_addr,
2413 .ndo_change_mtu = mlx4_en_change_mtu,
2414 .ndo_tx_timeout = mlx4_en_tx_timeout,
2415 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2416 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2417 .ndo_set_vf_mac = mlx4_en_set_vf_mac,
2418 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2419 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2420 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2421 .ndo_get_vf_config = mlx4_en_get_vf_config,
2422 #ifdef CONFIG_NET_POLL_CONTROLLER
2423 .ndo_poll_controller = mlx4_en_netpoll,
2424 #endif
2425 .ndo_set_features = mlx4_en_set_features,
2426 .ndo_setup_tc = mlx4_en_setup_tc,
2427 #ifdef CONFIG_RFS_ACCEL
2428 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2429 #endif
2430 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2431 #ifdef CONFIG_MLX4_EN_VXLAN
2432 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
2433 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
2434 .ndo_features_check = mlx4_en_features_check,
2435 #endif
2436 };
2437
2438 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2439 struct mlx4_en_port_profile *prof)
2440 {
2441 struct net_device *dev;
2442 struct mlx4_en_priv *priv;
2443 int i;
2444 int err;
2445 u64 mac_u64;
2446
2447 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2448 MAX_TX_RINGS, MAX_RX_RINGS);
2449 if (dev == NULL)
2450 return -ENOMEM;
2451
2452 netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2453 netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2454
2455 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2456 dev->dev_port = port - 1;
2457
2458 /*
2459 * Initialize driver private data
2460 */
2461
2462 priv = netdev_priv(dev);
2463 memset(priv, 0, sizeof(struct mlx4_en_priv));
2464 priv->dev = dev;
2465 priv->mdev = mdev;
2466 priv->ddev = &mdev->pdev->dev;
2467 priv->prof = prof;
2468 priv->port = port;
2469 priv->port_up = false;
2470 priv->flags = prof->flags;
2471 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
2472 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2473 MLX4_WQE_CTRL_SOLICITED);
2474 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2475 priv->tx_ring_num = prof->tx_ring_num;
2476 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
2477
2478 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2479 GFP_KERNEL);
2480 if (!priv->tx_ring) {
2481 err = -ENOMEM;
2482 goto out;
2483 }
2484 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2485 GFP_KERNEL);
2486 if (!priv->tx_cq) {
2487 err = -ENOMEM;
2488 goto out;
2489 }
2490 priv->rx_ring_num = prof->rx_ring_num;
2491 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2492 priv->cqe_size = mdev->dev->caps.cqe_size;
2493 priv->mac_index = -1;
2494 priv->msg_enable = MLX4_EN_MSG_LEVEL;
2495 spin_lock_init(&priv->stats_lock);
2496 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2497 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2498 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2499 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2500 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2501 #ifdef CONFIG_MLX4_EN_VXLAN
2502 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2503 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2504 #endif
2505 #ifdef CONFIG_MLX4_EN_DCB
2506 if (!mlx4_is_slave(priv->mdev->dev)) {
2507 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2508 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2509 } else {
2510 en_info(priv, "enabling only PFC DCB ops\n");
2511 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2512 }
2513 }
2514 #endif
2515
2516 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2517 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2518
2519 /* Query for default mac and max mtu */
2520 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2521
2522 /* Set default MAC */
2523 dev->addr_len = ETH_ALEN;
2524 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2525 if (!is_valid_ether_addr(dev->dev_addr)) {
2526 if (mlx4_is_slave(priv->mdev->dev)) {
2527 eth_hw_addr_random(dev);
2528 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2529 mac_u64 = mlx4_mac_to_u64(dev->dev_addr);
2530 mdev->dev->caps.def_mac[priv->port] = mac_u64;
2531 } else {
2532 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2533 priv->port, dev->dev_addr);
2534 err = -EINVAL;
2535 goto out;
2536 }
2537 }
2538
2539 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
2540
2541 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2542 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2543 err = mlx4_en_alloc_resources(priv);
2544 if (err)
2545 goto out;
2546
2547 #ifdef CONFIG_RFS_ACCEL
2548 INIT_LIST_HEAD(&priv->filters);
2549 spin_lock_init(&priv->filters_lock);
2550 #endif
2551
2552 /* Initialize time stamping config */
2553 priv->hwtstamp_config.flags = 0;
2554 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2555 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2556
2557 /* Allocate page for receive rings */
2558 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2559 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2560 if (err) {
2561 en_err(priv, "Failed to allocate page for rx qps\n");
2562 goto out;
2563 }
2564 priv->allocated = 1;
2565
2566 /*
2567 * Initialize netdev entry points
2568 */
2569 if (mlx4_is_master(priv->mdev->dev))
2570 dev->netdev_ops = &mlx4_netdev_ops_master;
2571 else
2572 dev->netdev_ops = &mlx4_netdev_ops;
2573 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2574 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2575 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2576
2577 dev->ethtool_ops = &mlx4_en_ethtool_ops;
2578
2579 /*
2580 * Set driver features
2581 */
2582 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2583 if (mdev->LSO_support)
2584 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2585
2586 dev->vlan_features = dev->hw_features;
2587
2588 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2589 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2590 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2591 NETIF_F_HW_VLAN_CTAG_FILTER;
2592 dev->hw_features |= NETIF_F_LOOPBACK;
2593
2594 if (mdev->dev->caps.steering_mode ==
2595 MLX4_STEERING_MODE_DEVICE_MANAGED)
2596 dev->hw_features |= NETIF_F_NTUPLE;
2597
2598 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2599 dev->priv_flags |= IFF_UNICAST_FLT;
2600
2601 mdev->pndev[port] = dev;
2602
2603 netif_carrier_off(dev);
2604 mlx4_en_set_default_moderation(priv);
2605
2606 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2607 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2608
2609 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2610
2611 /* Configure port */
2612 mlx4_en_calc_rx_buf(dev);
2613 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2614 priv->rx_skb_size + ETH_FCS_LEN,
2615 prof->tx_pause, prof->tx_ppp,
2616 prof->rx_pause, prof->rx_ppp);
2617 if (err) {
2618 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
2619 priv->port, err);
2620 goto out;
2621 }
2622
2623 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2624 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
2625 if (err) {
2626 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
2627 err);
2628 goto out;
2629 }
2630 }
2631
2632 /* Init port */
2633 en_warn(priv, "Initializing port\n");
2634 err = mlx4_INIT_PORT(mdev->dev, priv->port);
2635 if (err) {
2636 en_err(priv, "Failed Initializing port\n");
2637 goto out;
2638 }
2639 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2640
2641 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2642 queue_delayed_work(mdev->workqueue, &priv->service_task,
2643 SERVICE_TASK_DELAY);
2644
2645 err = register_netdev(dev);
2646 if (err) {
2647 en_err(priv, "Netdev registration failed for port %d\n", port);
2648 goto out;
2649 }
2650
2651 priv->registered = 1;
2652
2653 return 0;
2654
2655 out:
2656 mlx4_en_destroy_netdev(dev);
2657 return err;
2658 }
2659
Linux with added FPC-III support