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net/mlx4_en: Implement ndo_get_phys_port_id
[deliverable/linux.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
43 #include <linux/mlx4/driver.h>
44 #include <linux/mlx4/device.h>
45 #include <linux/mlx4/cmd.h>
46 #include <linux/mlx4/cq.h>
47
48 #include "mlx4_en.h"
49 #include "en_port.h"
50
51 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
52 {
53 struct mlx4_en_priv *priv = netdev_priv(dev);
54 int i;
55 unsigned int offset = 0;
56
57 if (up && up != MLX4_EN_NUM_UP)
58 return -EINVAL;
59
60 netdev_set_num_tc(dev, up);
61
62 /* Partition Tx queues evenly amongst UP's */
63 for (i = 0; i < up; i++) {
64 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
65 offset += priv->num_tx_rings_p_up;
66 }
67
68 return 0;
69 }
70
71 #ifdef CONFIG_NET_RX_BUSY_POLL
72 /* must be called with local_bh_disable()d */
73 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
74 {
75 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
76 struct net_device *dev = cq->dev;
77 struct mlx4_en_priv *priv = netdev_priv(dev);
78 struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
79 int done;
80
81 if (!priv->port_up)
82 return LL_FLUSH_FAILED;
83
84 if (!mlx4_en_cq_lock_poll(cq))
85 return LL_FLUSH_BUSY;
86
87 done = mlx4_en_process_rx_cq(dev, cq, 4);
88 if (likely(done))
89 rx_ring->cleaned += done;
90 else
91 rx_ring->misses++;
92
93 mlx4_en_cq_unlock_poll(cq);
94
95 return done;
96 }
97 #endif /* CONFIG_NET_RX_BUSY_POLL */
98
99 #ifdef CONFIG_RFS_ACCEL
100
101 struct mlx4_en_filter {
102 struct list_head next;
103 struct work_struct work;
104
105 u8 ip_proto;
106 __be32 src_ip;
107 __be32 dst_ip;
108 __be16 src_port;
109 __be16 dst_port;
110
111 int rxq_index;
112 struct mlx4_en_priv *priv;
113 u32 flow_id; /* RFS infrastructure id */
114 int id; /* mlx4_en driver id */
115 u64 reg_id; /* Flow steering API id */
116 u8 activated; /* Used to prevent expiry before filter
117 * is attached
118 */
119 struct hlist_node filter_chain;
120 };
121
122 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
123
124 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
125 {
126 switch (ip_proto) {
127 case IPPROTO_UDP:
128 return MLX4_NET_TRANS_RULE_ID_UDP;
129 case IPPROTO_TCP:
130 return MLX4_NET_TRANS_RULE_ID_TCP;
131 default:
132 return -EPROTONOSUPPORT;
133 }
134 };
135
136 static void mlx4_en_filter_work(struct work_struct *work)
137 {
138 struct mlx4_en_filter *filter = container_of(work,
139 struct mlx4_en_filter,
140 work);
141 struct mlx4_en_priv *priv = filter->priv;
142 struct mlx4_spec_list spec_tcp_udp = {
143 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
144 {
145 .tcp_udp = {
146 .dst_port = filter->dst_port,
147 .dst_port_msk = (__force __be16)-1,
148 .src_port = filter->src_port,
149 .src_port_msk = (__force __be16)-1,
150 },
151 },
152 };
153 struct mlx4_spec_list spec_ip = {
154 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
155 {
156 .ipv4 = {
157 .dst_ip = filter->dst_ip,
158 .dst_ip_msk = (__force __be32)-1,
159 .src_ip = filter->src_ip,
160 .src_ip_msk = (__force __be32)-1,
161 },
162 },
163 };
164 struct mlx4_spec_list spec_eth = {
165 .id = MLX4_NET_TRANS_RULE_ID_ETH,
166 };
167 struct mlx4_net_trans_rule rule = {
168 .list = LIST_HEAD_INIT(rule.list),
169 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
170 .exclusive = 1,
171 .allow_loopback = 1,
172 .promisc_mode = MLX4_FS_REGULAR,
173 .port = priv->port,
174 .priority = MLX4_DOMAIN_RFS,
175 };
176 int rc;
177 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
178
179 if (spec_tcp_udp.id < 0) {
180 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
181 filter->ip_proto);
182 goto ignore;
183 }
184 list_add_tail(&spec_eth.list, &rule.list);
185 list_add_tail(&spec_ip.list, &rule.list);
186 list_add_tail(&spec_tcp_udp.list, &rule.list);
187
188 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
189 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
190 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
191
192 filter->activated = 0;
193
194 if (filter->reg_id) {
195 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
196 if (rc && rc != -ENOENT)
197 en_err(priv, "Error detaching flow. rc = %d\n", rc);
198 }
199
200 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
201 if (rc)
202 en_err(priv, "Error attaching flow. err = %d\n", rc);
203
204 ignore:
205 mlx4_en_filter_rfs_expire(priv);
206
207 filter->activated = 1;
208 }
209
210 static inline struct hlist_head *
211 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
212 __be16 src_port, __be16 dst_port)
213 {
214 unsigned long l;
215 int bucket_idx;
216
217 l = (__force unsigned long)src_port |
218 ((__force unsigned long)dst_port << 2);
219 l ^= (__force unsigned long)(src_ip ^ dst_ip);
220
221 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
222
223 return &priv->filter_hash[bucket_idx];
224 }
225
226 static struct mlx4_en_filter *
227 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
228 __be32 dst_ip, u8 ip_proto, __be16 src_port,
229 __be16 dst_port, u32 flow_id)
230 {
231 struct mlx4_en_filter *filter = NULL;
232
233 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
234 if (!filter)
235 return NULL;
236
237 filter->priv = priv;
238 filter->rxq_index = rxq_index;
239 INIT_WORK(&filter->work, mlx4_en_filter_work);
240
241 filter->src_ip = src_ip;
242 filter->dst_ip = dst_ip;
243 filter->ip_proto = ip_proto;
244 filter->src_port = src_port;
245 filter->dst_port = dst_port;
246
247 filter->flow_id = flow_id;
248
249 filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
250
251 list_add_tail(&filter->next, &priv->filters);
252 hlist_add_head(&filter->filter_chain,
253 filter_hash_bucket(priv, src_ip, dst_ip, src_port,
254 dst_port));
255
256 return filter;
257 }
258
259 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
260 {
261 struct mlx4_en_priv *priv = filter->priv;
262 int rc;
263
264 list_del(&filter->next);
265
266 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
267 if (rc && rc != -ENOENT)
268 en_err(priv, "Error detaching flow. rc = %d\n", rc);
269
270 kfree(filter);
271 }
272
273 static inline struct mlx4_en_filter *
274 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
275 u8 ip_proto, __be16 src_port, __be16 dst_port)
276 {
277 struct mlx4_en_filter *filter;
278 struct mlx4_en_filter *ret = NULL;
279
280 hlist_for_each_entry(filter,
281 filter_hash_bucket(priv, src_ip, dst_ip,
282 src_port, dst_port),
283 filter_chain) {
284 if (filter->src_ip == src_ip &&
285 filter->dst_ip == dst_ip &&
286 filter->ip_proto == ip_proto &&
287 filter->src_port == src_port &&
288 filter->dst_port == dst_port) {
289 ret = filter;
290 break;
291 }
292 }
293
294 return ret;
295 }
296
297 static int
298 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
299 u16 rxq_index, u32 flow_id)
300 {
301 struct mlx4_en_priv *priv = netdev_priv(net_dev);
302 struct mlx4_en_filter *filter;
303 const struct iphdr *ip;
304 const __be16 *ports;
305 u8 ip_proto;
306 __be32 src_ip;
307 __be32 dst_ip;
308 __be16 src_port;
309 __be16 dst_port;
310 int nhoff = skb_network_offset(skb);
311 int ret = 0;
312
313 if (skb->protocol != htons(ETH_P_IP))
314 return -EPROTONOSUPPORT;
315
316 ip = (const struct iphdr *)(skb->data + nhoff);
317 if (ip_is_fragment(ip))
318 return -EPROTONOSUPPORT;
319
320 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
321 return -EPROTONOSUPPORT;
322 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
323
324 ip_proto = ip->protocol;
325 src_ip = ip->saddr;
326 dst_ip = ip->daddr;
327 src_port = ports[0];
328 dst_port = ports[1];
329
330 spin_lock_bh(&priv->filters_lock);
331 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
332 src_port, dst_port);
333 if (filter) {
334 if (filter->rxq_index == rxq_index)
335 goto out;
336
337 filter->rxq_index = rxq_index;
338 } else {
339 filter = mlx4_en_filter_alloc(priv, rxq_index,
340 src_ip, dst_ip, ip_proto,
341 src_port, dst_port, flow_id);
342 if (!filter) {
343 ret = -ENOMEM;
344 goto err;
345 }
346 }
347
348 queue_work(priv->mdev->workqueue, &filter->work);
349
350 out:
351 ret = filter->id;
352 err:
353 spin_unlock_bh(&priv->filters_lock);
354
355 return ret;
356 }
357
358 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
359 {
360 struct mlx4_en_filter *filter, *tmp;
361 LIST_HEAD(del_list);
362
363 spin_lock_bh(&priv->filters_lock);
364 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
365 list_move(&filter->next, &del_list);
366 hlist_del(&filter->filter_chain);
367 }
368 spin_unlock_bh(&priv->filters_lock);
369
370 list_for_each_entry_safe(filter, tmp, &del_list, next) {
371 cancel_work_sync(&filter->work);
372 mlx4_en_filter_free(filter);
373 }
374 }
375
376 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
377 {
378 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
379 LIST_HEAD(del_list);
380 int i = 0;
381
382 spin_lock_bh(&priv->filters_lock);
383 list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
384 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
385 break;
386
387 if (filter->activated &&
388 !work_pending(&filter->work) &&
389 rps_may_expire_flow(priv->dev,
390 filter->rxq_index, filter->flow_id,
391 filter->id)) {
392 list_move(&filter->next, &del_list);
393 hlist_del(&filter->filter_chain);
394 } else
395 last_filter = filter;
396
397 i++;
398 }
399
400 if (last_filter && (&last_filter->next != priv->filters.next))
401 list_move(&priv->filters, &last_filter->next);
402
403 spin_unlock_bh(&priv->filters_lock);
404
405 list_for_each_entry_safe(filter, tmp, &del_list, next)
406 mlx4_en_filter_free(filter);
407 }
408 #endif
409
410 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
411 __be16 proto, u16 vid)
412 {
413 struct mlx4_en_priv *priv = netdev_priv(dev);
414 struct mlx4_en_dev *mdev = priv->mdev;
415 int err;
416 int idx;
417
418 en_dbg(HW, priv, "adding VLAN:%d\n", vid);
419
420 set_bit(vid, priv->active_vlans);
421
422 /* Add VID to port VLAN filter */
423 mutex_lock(&mdev->state_lock);
424 if (mdev->device_up && priv->port_up) {
425 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
426 if (err)
427 en_err(priv, "Failed configuring VLAN filter\n");
428 }
429 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
430 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
431 mutex_unlock(&mdev->state_lock);
432
433 return 0;
434 }
435
436 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
437 __be16 proto, u16 vid)
438 {
439 struct mlx4_en_priv *priv = netdev_priv(dev);
440 struct mlx4_en_dev *mdev = priv->mdev;
441 int err;
442
443 en_dbg(HW, priv, "Killing VID:%d\n", vid);
444
445 clear_bit(vid, priv->active_vlans);
446
447 /* Remove VID from port VLAN filter */
448 mutex_lock(&mdev->state_lock);
449 mlx4_unregister_vlan(mdev->dev, priv->port, vid);
450
451 if (mdev->device_up && priv->port_up) {
452 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
453 if (err)
454 en_err(priv, "Failed configuring VLAN filter\n");
455 }
456 mutex_unlock(&mdev->state_lock);
457
458 return 0;
459 }
460
461 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
462 {
463 int i;
464 for (i = ETH_ALEN - 1; i >= 0; --i) {
465 dst_mac[i] = src_mac & 0xff;
466 src_mac >>= 8;
467 }
468 memset(&dst_mac[ETH_ALEN], 0, 2);
469 }
470
471 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
472 unsigned char *mac, int *qpn, u64 *reg_id)
473 {
474 struct mlx4_en_dev *mdev = priv->mdev;
475 struct mlx4_dev *dev = mdev->dev;
476 int err;
477
478 switch (dev->caps.steering_mode) {
479 case MLX4_STEERING_MODE_B0: {
480 struct mlx4_qp qp;
481 u8 gid[16] = {0};
482
483 qp.qpn = *qpn;
484 memcpy(&gid[10], mac, ETH_ALEN);
485 gid[5] = priv->port;
486
487 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
488 break;
489 }
490 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
491 struct mlx4_spec_list spec_eth = { {NULL} };
492 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
493
494 struct mlx4_net_trans_rule rule = {
495 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
496 .exclusive = 0,
497 .allow_loopback = 1,
498 .promisc_mode = MLX4_FS_REGULAR,
499 .priority = MLX4_DOMAIN_NIC,
500 };
501
502 rule.port = priv->port;
503 rule.qpn = *qpn;
504 INIT_LIST_HEAD(&rule.list);
505
506 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
507 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
508 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
509 list_add_tail(&spec_eth.list, &rule.list);
510
511 err = mlx4_flow_attach(dev, &rule, reg_id);
512 break;
513 }
514 default:
515 return -EINVAL;
516 }
517 if (err)
518 en_warn(priv, "Failed Attaching Unicast\n");
519
520 return err;
521 }
522
523 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
524 unsigned char *mac, int qpn, u64 reg_id)
525 {
526 struct mlx4_en_dev *mdev = priv->mdev;
527 struct mlx4_dev *dev = mdev->dev;
528
529 switch (dev->caps.steering_mode) {
530 case MLX4_STEERING_MODE_B0: {
531 struct mlx4_qp qp;
532 u8 gid[16] = {0};
533
534 qp.qpn = qpn;
535 memcpy(&gid[10], mac, ETH_ALEN);
536 gid[5] = priv->port;
537
538 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
539 break;
540 }
541 case MLX4_STEERING_MODE_DEVICE_MANAGED: {
542 mlx4_flow_detach(dev, reg_id);
543 break;
544 }
545 default:
546 en_err(priv, "Invalid steering mode.\n");
547 }
548 }
549
550 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
551 {
552 struct mlx4_en_dev *mdev = priv->mdev;
553 struct mlx4_dev *dev = mdev->dev;
554 struct mlx4_mac_entry *entry;
555 int index = 0;
556 int err = 0;
557 u64 reg_id;
558 int *qpn = &priv->base_qpn;
559 u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
560
561 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
562 priv->dev->dev_addr);
563 index = mlx4_register_mac(dev, priv->port, mac);
564 if (index < 0) {
565 err = index;
566 en_err(priv, "Failed adding MAC: %pM\n",
567 priv->dev->dev_addr);
568 return err;
569 }
570
571 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
572 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
573 *qpn = base_qpn + index;
574 return 0;
575 }
576
577 err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
578 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
579 if (err) {
580 en_err(priv, "Failed to reserve qp for mac registration\n");
581 goto qp_err;
582 }
583
584 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
585 if (err)
586 goto steer_err;
587
588 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
589 if (!entry) {
590 err = -ENOMEM;
591 goto alloc_err;
592 }
593 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
594 entry->reg_id = reg_id;
595
596 hlist_add_head_rcu(&entry->hlist,
597 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
598
599 return 0;
600
601 alloc_err:
602 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
603
604 steer_err:
605 mlx4_qp_release_range(dev, *qpn, 1);
606
607 qp_err:
608 mlx4_unregister_mac(dev, priv->port, mac);
609 return err;
610 }
611
612 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
613 {
614 struct mlx4_en_dev *mdev = priv->mdev;
615 struct mlx4_dev *dev = mdev->dev;
616 int qpn = priv->base_qpn;
617 u64 mac;
618
619 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
620 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
621 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
622 priv->dev->dev_addr);
623 mlx4_unregister_mac(dev, priv->port, mac);
624 } else {
625 struct mlx4_mac_entry *entry;
626 struct hlist_node *tmp;
627 struct hlist_head *bucket;
628 unsigned int i;
629
630 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
631 bucket = &priv->mac_hash[i];
632 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
633 mac = mlx4_en_mac_to_u64(entry->mac);
634 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
635 entry->mac);
636 mlx4_en_uc_steer_release(priv, entry->mac,
637 qpn, entry->reg_id);
638
639 mlx4_unregister_mac(dev, priv->port, mac);
640 hlist_del_rcu(&entry->hlist);
641 kfree_rcu(entry, rcu);
642 }
643 }
644
645 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
646 priv->port, qpn);
647 mlx4_qp_release_range(dev, qpn, 1);
648 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
649 }
650 }
651
652 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
653 unsigned char *new_mac, unsigned char *prev_mac)
654 {
655 struct mlx4_en_dev *mdev = priv->mdev;
656 struct mlx4_dev *dev = mdev->dev;
657 int err = 0;
658 u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac);
659
660 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
661 struct hlist_head *bucket;
662 unsigned int mac_hash;
663 struct mlx4_mac_entry *entry;
664 struct hlist_node *tmp;
665 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac);
666
667 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
668 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
669 if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
670 mlx4_en_uc_steer_release(priv, entry->mac,
671 qpn, entry->reg_id);
672 mlx4_unregister_mac(dev, priv->port,
673 prev_mac_u64);
674 hlist_del_rcu(&entry->hlist);
675 synchronize_rcu();
676 memcpy(entry->mac, new_mac, ETH_ALEN);
677 entry->reg_id = 0;
678 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
679 hlist_add_head_rcu(&entry->hlist,
680 &priv->mac_hash[mac_hash]);
681 mlx4_register_mac(dev, priv->port, new_mac_u64);
682 err = mlx4_en_uc_steer_add(priv, new_mac,
683 &qpn,
684 &entry->reg_id);
685 return err;
686 }
687 }
688 return -EINVAL;
689 }
690
691 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
692 }
693
694 u64 mlx4_en_mac_to_u64(u8 *addr)
695 {
696 u64 mac = 0;
697 int i;
698
699 for (i = 0; i < ETH_ALEN; i++) {
700 mac <<= 8;
701 mac |= addr[i];
702 }
703 return mac;
704 }
705
706 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
707 {
708 int err = 0;
709
710 if (priv->port_up) {
711 /* Remove old MAC and insert the new one */
712 err = mlx4_en_replace_mac(priv, priv->base_qpn,
713 priv->dev->dev_addr, priv->prev_mac);
714 if (err)
715 en_err(priv, "Failed changing HW MAC address\n");
716 memcpy(priv->prev_mac, priv->dev->dev_addr,
717 sizeof(priv->prev_mac));
718 } else
719 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
720
721 return err;
722 }
723
724 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
725 {
726 struct mlx4_en_priv *priv = netdev_priv(dev);
727 struct mlx4_en_dev *mdev = priv->mdev;
728 struct sockaddr *saddr = addr;
729 int err;
730
731 if (!is_valid_ether_addr(saddr->sa_data))
732 return -EADDRNOTAVAIL;
733
734 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
735
736 mutex_lock(&mdev->state_lock);
737 err = mlx4_en_do_set_mac(priv);
738 mutex_unlock(&mdev->state_lock);
739
740 return err;
741 }
742
743 static void mlx4_en_clear_list(struct net_device *dev)
744 {
745 struct mlx4_en_priv *priv = netdev_priv(dev);
746 struct mlx4_en_mc_list *tmp, *mc_to_del;
747
748 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
749 list_del(&mc_to_del->list);
750 kfree(mc_to_del);
751 }
752 }
753
754 static void mlx4_en_cache_mclist(struct net_device *dev)
755 {
756 struct mlx4_en_priv *priv = netdev_priv(dev);
757 struct netdev_hw_addr *ha;
758 struct mlx4_en_mc_list *tmp;
759
760 mlx4_en_clear_list(dev);
761 netdev_for_each_mc_addr(ha, dev) {
762 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
763 if (!tmp) {
764 mlx4_en_clear_list(dev);
765 return;
766 }
767 memcpy(tmp->addr, ha->addr, ETH_ALEN);
768 list_add_tail(&tmp->list, &priv->mc_list);
769 }
770 }
771
772 static void update_mclist_flags(struct mlx4_en_priv *priv,
773 struct list_head *dst,
774 struct list_head *src)
775 {
776 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
777 bool found;
778
779 /* Find all the entries that should be removed from dst,
780 * These are the entries that are not found in src
781 */
782 list_for_each_entry(dst_tmp, dst, list) {
783 found = false;
784 list_for_each_entry(src_tmp, src, list) {
785 if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
786 found = true;
787 break;
788 }
789 }
790 if (!found)
791 dst_tmp->action = MCLIST_REM;
792 }
793
794 /* Add entries that exist in src but not in dst
795 * mark them as need to add
796 */
797 list_for_each_entry(src_tmp, src, list) {
798 found = false;
799 list_for_each_entry(dst_tmp, dst, list) {
800 if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
801 dst_tmp->action = MCLIST_NONE;
802 found = true;
803 break;
804 }
805 }
806 if (!found) {
807 new_mc = kmemdup(src_tmp,
808 sizeof(struct mlx4_en_mc_list),
809 GFP_KERNEL);
810 if (!new_mc)
811 return;
812
813 new_mc->action = MCLIST_ADD;
814 list_add_tail(&new_mc->list, dst);
815 }
816 }
817 }
818
819 static void mlx4_en_set_rx_mode(struct net_device *dev)
820 {
821 struct mlx4_en_priv *priv = netdev_priv(dev);
822
823 if (!priv->port_up)
824 return;
825
826 queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
827 }
828
829 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
830 struct mlx4_en_dev *mdev)
831 {
832 int err = 0;
833
834 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
835 if (netif_msg_rx_status(priv))
836 en_warn(priv, "Entering promiscuous mode\n");
837 priv->flags |= MLX4_EN_FLAG_PROMISC;
838
839 /* Enable promiscouos mode */
840 switch (mdev->dev->caps.steering_mode) {
841 case MLX4_STEERING_MODE_DEVICE_MANAGED:
842 err = mlx4_flow_steer_promisc_add(mdev->dev,
843 priv->port,
844 priv->base_qpn,
845 MLX4_FS_ALL_DEFAULT);
846 if (err)
847 en_err(priv, "Failed enabling promiscuous mode\n");
848 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
849 break;
850
851 case MLX4_STEERING_MODE_B0:
852 err = mlx4_unicast_promisc_add(mdev->dev,
853 priv->base_qpn,
854 priv->port);
855 if (err)
856 en_err(priv, "Failed enabling unicast promiscuous mode\n");
857
858 /* Add the default qp number as multicast
859 * promisc
860 */
861 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
862 err = mlx4_multicast_promisc_add(mdev->dev,
863 priv->base_qpn,
864 priv->port);
865 if (err)
866 en_err(priv, "Failed enabling multicast promiscuous mode\n");
867 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
868 }
869 break;
870
871 case MLX4_STEERING_MODE_A0:
872 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
873 priv->port,
874 priv->base_qpn,
875 1);
876 if (err)
877 en_err(priv, "Failed enabling promiscuous mode\n");
878 break;
879 }
880
881 /* Disable port multicast filter (unconditionally) */
882 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
883 0, MLX4_MCAST_DISABLE);
884 if (err)
885 en_err(priv, "Failed disabling multicast filter\n");
886
887 /* Disable port VLAN filter */
888 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
889 if (err)
890 en_err(priv, "Failed disabling VLAN filter\n");
891 }
892 }
893
894 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
895 struct mlx4_en_dev *mdev)
896 {
897 int err = 0;
898
899 if (netif_msg_rx_status(priv))
900 en_warn(priv, "Leaving promiscuous mode\n");
901 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
902
903 /* Disable promiscouos mode */
904 switch (mdev->dev->caps.steering_mode) {
905 case MLX4_STEERING_MODE_DEVICE_MANAGED:
906 err = mlx4_flow_steer_promisc_remove(mdev->dev,
907 priv->port,
908 MLX4_FS_ALL_DEFAULT);
909 if (err)
910 en_err(priv, "Failed disabling promiscuous mode\n");
911 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
912 break;
913
914 case MLX4_STEERING_MODE_B0:
915 err = mlx4_unicast_promisc_remove(mdev->dev,
916 priv->base_qpn,
917 priv->port);
918 if (err)
919 en_err(priv, "Failed disabling unicast promiscuous mode\n");
920 /* Disable Multicast promisc */
921 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
922 err = mlx4_multicast_promisc_remove(mdev->dev,
923 priv->base_qpn,
924 priv->port);
925 if (err)
926 en_err(priv, "Failed disabling multicast promiscuous mode\n");
927 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
928 }
929 break;
930
931 case MLX4_STEERING_MODE_A0:
932 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
933 priv->port,
934 priv->base_qpn, 0);
935 if (err)
936 en_err(priv, "Failed disabling promiscuous mode\n");
937 break;
938 }
939
940 /* Enable port VLAN filter */
941 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
942 if (err)
943 en_err(priv, "Failed enabling VLAN filter\n");
944 }
945
946 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
947 struct net_device *dev,
948 struct mlx4_en_dev *mdev)
949 {
950 struct mlx4_en_mc_list *mclist, *tmp;
951 u64 mcast_addr = 0;
952 u8 mc_list[16] = {0};
953 int err = 0;
954
955 /* Enable/disable the multicast filter according to IFF_ALLMULTI */
956 if (dev->flags & IFF_ALLMULTI) {
957 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
958 0, MLX4_MCAST_DISABLE);
959 if (err)
960 en_err(priv, "Failed disabling multicast filter\n");
961
962 /* Add the default qp number as multicast promisc */
963 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
964 switch (mdev->dev->caps.steering_mode) {
965 case MLX4_STEERING_MODE_DEVICE_MANAGED:
966 err = mlx4_flow_steer_promisc_add(mdev->dev,
967 priv->port,
968 priv->base_qpn,
969 MLX4_FS_MC_DEFAULT);
970 break;
971
972 case MLX4_STEERING_MODE_B0:
973 err = mlx4_multicast_promisc_add(mdev->dev,
974 priv->base_qpn,
975 priv->port);
976 break;
977
978 case MLX4_STEERING_MODE_A0:
979 break;
980 }
981 if (err)
982 en_err(priv, "Failed entering multicast promisc mode\n");
983 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
984 }
985 } else {
986 /* Disable Multicast promisc */
987 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
988 switch (mdev->dev->caps.steering_mode) {
989 case MLX4_STEERING_MODE_DEVICE_MANAGED:
990 err = mlx4_flow_steer_promisc_remove(mdev->dev,
991 priv->port,
992 MLX4_FS_MC_DEFAULT);
993 break;
994
995 case MLX4_STEERING_MODE_B0:
996 err = mlx4_multicast_promisc_remove(mdev->dev,
997 priv->base_qpn,
998 priv->port);
999 break;
1000
1001 case MLX4_STEERING_MODE_A0:
1002 break;
1003 }
1004 if (err)
1005 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1006 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1007 }
1008
1009 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1010 0, MLX4_MCAST_DISABLE);
1011 if (err)
1012 en_err(priv, "Failed disabling multicast filter\n");
1013
1014 /* Flush mcast filter and init it with broadcast address */
1015 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1016 1, MLX4_MCAST_CONFIG);
1017
1018 /* Update multicast list - we cache all addresses so they won't
1019 * change while HW is updated holding the command semaphor */
1020 netif_addr_lock_bh(dev);
1021 mlx4_en_cache_mclist(dev);
1022 netif_addr_unlock_bh(dev);
1023 list_for_each_entry(mclist, &priv->mc_list, list) {
1024 mcast_addr = mlx4_en_mac_to_u64(mclist->addr);
1025 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1026 mcast_addr, 0, MLX4_MCAST_CONFIG);
1027 }
1028 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1029 0, MLX4_MCAST_ENABLE);
1030 if (err)
1031 en_err(priv, "Failed enabling multicast filter\n");
1032
1033 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1034 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1035 if (mclist->action == MCLIST_REM) {
1036 /* detach this address and delete from list */
1037 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1038 mc_list[5] = priv->port;
1039 err = mlx4_multicast_detach(mdev->dev,
1040 &priv->rss_map.indir_qp,
1041 mc_list,
1042 MLX4_PROT_ETH,
1043 mclist->reg_id);
1044 if (err)
1045 en_err(priv, "Fail to detach multicast address\n");
1046
1047 /* remove from list */
1048 list_del(&mclist->list);
1049 kfree(mclist);
1050 } else if (mclist->action == MCLIST_ADD) {
1051 /* attach the address */
1052 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1053 /* needed for B0 steering support */
1054 mc_list[5] = priv->port;
1055 err = mlx4_multicast_attach(mdev->dev,
1056 &priv->rss_map.indir_qp,
1057 mc_list,
1058 priv->port, 0,
1059 MLX4_PROT_ETH,
1060 &mclist->reg_id);
1061 if (err)
1062 en_err(priv, "Fail to attach multicast address\n");
1063
1064 }
1065 }
1066 }
1067 }
1068
1069 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1070 struct net_device *dev,
1071 struct mlx4_en_dev *mdev)
1072 {
1073 struct netdev_hw_addr *ha;
1074 struct mlx4_mac_entry *entry;
1075 struct hlist_node *tmp;
1076 bool found;
1077 u64 mac;
1078 int err = 0;
1079 struct hlist_head *bucket;
1080 unsigned int i;
1081 int removed = 0;
1082 u32 prev_flags;
1083
1084 /* Note that we do not need to protect our mac_hash traversal with rcu,
1085 * since all modification code is protected by mdev->state_lock
1086 */
1087
1088 /* find what to remove */
1089 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1090 bucket = &priv->mac_hash[i];
1091 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1092 found = false;
1093 netdev_for_each_uc_addr(ha, dev) {
1094 if (ether_addr_equal_64bits(entry->mac,
1095 ha->addr)) {
1096 found = true;
1097 break;
1098 }
1099 }
1100
1101 /* MAC address of the port is not in uc list */
1102 if (ether_addr_equal_64bits(entry->mac, dev->dev_addr))
1103 found = true;
1104
1105 if (!found) {
1106 mac = mlx4_en_mac_to_u64(entry->mac);
1107 mlx4_en_uc_steer_release(priv, entry->mac,
1108 priv->base_qpn,
1109 entry->reg_id);
1110 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1111
1112 hlist_del_rcu(&entry->hlist);
1113 kfree_rcu(entry, rcu);
1114 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1115 entry->mac, priv->port);
1116 ++removed;
1117 }
1118 }
1119 }
1120
1121 /* if we didn't remove anything, there is no use in trying to add
1122 * again once we are in a forced promisc mode state
1123 */
1124 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1125 return;
1126
1127 prev_flags = priv->flags;
1128 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1129
1130 /* find what to add */
1131 netdev_for_each_uc_addr(ha, dev) {
1132 found = false;
1133 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1134 hlist_for_each_entry(entry, bucket, hlist) {
1135 if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1136 found = true;
1137 break;
1138 }
1139 }
1140
1141 if (!found) {
1142 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1143 if (!entry) {
1144 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1145 ha->addr, priv->port);
1146 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1147 break;
1148 }
1149 mac = mlx4_en_mac_to_u64(ha->addr);
1150 memcpy(entry->mac, ha->addr, ETH_ALEN);
1151 err = mlx4_register_mac(mdev->dev, priv->port, mac);
1152 if (err < 0) {
1153 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1154 ha->addr, priv->port, err);
1155 kfree(entry);
1156 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1157 break;
1158 }
1159 err = mlx4_en_uc_steer_add(priv, ha->addr,
1160 &priv->base_qpn,
1161 &entry->reg_id);
1162 if (err) {
1163 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1164 ha->addr, priv->port, err);
1165 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1166 kfree(entry);
1167 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1168 break;
1169 } else {
1170 unsigned int mac_hash;
1171 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1172 ha->addr, priv->port);
1173 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1174 bucket = &priv->mac_hash[mac_hash];
1175 hlist_add_head_rcu(&entry->hlist, bucket);
1176 }
1177 }
1178 }
1179
1180 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1181 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1182 priv->port);
1183 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1184 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1185 priv->port);
1186 }
1187 }
1188
1189 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1190 {
1191 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1192 rx_mode_task);
1193 struct mlx4_en_dev *mdev = priv->mdev;
1194 struct net_device *dev = priv->dev;
1195
1196 mutex_lock(&mdev->state_lock);
1197 if (!mdev->device_up) {
1198 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1199 goto out;
1200 }
1201 if (!priv->port_up) {
1202 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1203 goto out;
1204 }
1205
1206 if (!netif_carrier_ok(dev)) {
1207 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1208 if (priv->port_state.link_state) {
1209 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1210 netif_carrier_on(dev);
1211 en_dbg(LINK, priv, "Link Up\n");
1212 }
1213 }
1214 }
1215
1216 if (dev->priv_flags & IFF_UNICAST_FLT)
1217 mlx4_en_do_uc_filter(priv, dev, mdev);
1218
1219 /* Promsicuous mode: disable all filters */
1220 if ((dev->flags & IFF_PROMISC) ||
1221 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1222 mlx4_en_set_promisc_mode(priv, mdev);
1223 goto out;
1224 }
1225
1226 /* Not in promiscuous mode */
1227 if (priv->flags & MLX4_EN_FLAG_PROMISC)
1228 mlx4_en_clear_promisc_mode(priv, mdev);
1229
1230 mlx4_en_do_multicast(priv, dev, mdev);
1231 out:
1232 mutex_unlock(&mdev->state_lock);
1233 }
1234
1235 #ifdef CONFIG_NET_POLL_CONTROLLER
1236 static void mlx4_en_netpoll(struct net_device *dev)
1237 {
1238 struct mlx4_en_priv *priv = netdev_priv(dev);
1239 struct mlx4_en_cq *cq;
1240 unsigned long flags;
1241 int i;
1242
1243 for (i = 0; i < priv->rx_ring_num; i++) {
1244 cq = priv->rx_cq[i];
1245 spin_lock_irqsave(&cq->lock, flags);
1246 napi_synchronize(&cq->napi);
1247 mlx4_en_process_rx_cq(dev, cq, 0);
1248 spin_unlock_irqrestore(&cq->lock, flags);
1249 }
1250 }
1251 #endif
1252
1253 static void mlx4_en_tx_timeout(struct net_device *dev)
1254 {
1255 struct mlx4_en_priv *priv = netdev_priv(dev);
1256 struct mlx4_en_dev *mdev = priv->mdev;
1257 int i;
1258
1259 if (netif_msg_timer(priv))
1260 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1261
1262 for (i = 0; i < priv->tx_ring_num; i++) {
1263 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1264 continue;
1265 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1266 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1267 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1268 }
1269
1270 priv->port_stats.tx_timeout++;
1271 en_dbg(DRV, priv, "Scheduling watchdog\n");
1272 queue_work(mdev->workqueue, &priv->watchdog_task);
1273 }
1274
1275
1276 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1277 {
1278 struct mlx4_en_priv *priv = netdev_priv(dev);
1279
1280 spin_lock_bh(&priv->stats_lock);
1281 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1282 spin_unlock_bh(&priv->stats_lock);
1283
1284 return &priv->ret_stats;
1285 }
1286
1287 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1288 {
1289 struct mlx4_en_cq *cq;
1290 int i;
1291
1292 /* If we haven't received a specific coalescing setting
1293 * (module param), we set the moderation parameters as follows:
1294 * - moder_cnt is set to the number of mtu sized packets to
1295 * satisfy our coalescing target.
1296 * - moder_time is set to a fixed value.
1297 */
1298 priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1299 priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1300 priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1301 priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1302 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1303 priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1304
1305 /* Setup cq moderation params */
1306 for (i = 0; i < priv->rx_ring_num; i++) {
1307 cq = priv->rx_cq[i];
1308 cq->moder_cnt = priv->rx_frames;
1309 cq->moder_time = priv->rx_usecs;
1310 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1311 priv->last_moder_packets[i] = 0;
1312 priv->last_moder_bytes[i] = 0;
1313 }
1314
1315 for (i = 0; i < priv->tx_ring_num; i++) {
1316 cq = priv->tx_cq[i];
1317 cq->moder_cnt = priv->tx_frames;
1318 cq->moder_time = priv->tx_usecs;
1319 }
1320
1321 /* Reset auto-moderation params */
1322 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1323 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1324 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1325 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1326 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1327 priv->adaptive_rx_coal = 1;
1328 priv->last_moder_jiffies = 0;
1329 priv->last_moder_tx_packets = 0;
1330 }
1331
1332 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1333 {
1334 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1335 struct mlx4_en_cq *cq;
1336 unsigned long packets;
1337 unsigned long rate;
1338 unsigned long avg_pkt_size;
1339 unsigned long rx_packets;
1340 unsigned long rx_bytes;
1341 unsigned long rx_pkt_diff;
1342 int moder_time;
1343 int ring, err;
1344
1345 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1346 return;
1347
1348 for (ring = 0; ring < priv->rx_ring_num; ring++) {
1349 spin_lock_bh(&priv->stats_lock);
1350 rx_packets = priv->rx_ring[ring]->packets;
1351 rx_bytes = priv->rx_ring[ring]->bytes;
1352 spin_unlock_bh(&priv->stats_lock);
1353
1354 rx_pkt_diff = ((unsigned long) (rx_packets -
1355 priv->last_moder_packets[ring]));
1356 packets = rx_pkt_diff;
1357 rate = packets * HZ / period;
1358 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1359 priv->last_moder_bytes[ring])) / packets : 0;
1360
1361 /* Apply auto-moderation only when packet rate
1362 * exceeds a rate that it matters */
1363 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1364 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1365 if (rate < priv->pkt_rate_low)
1366 moder_time = priv->rx_usecs_low;
1367 else if (rate > priv->pkt_rate_high)
1368 moder_time = priv->rx_usecs_high;
1369 else
1370 moder_time = (rate - priv->pkt_rate_low) *
1371 (priv->rx_usecs_high - priv->rx_usecs_low) /
1372 (priv->pkt_rate_high - priv->pkt_rate_low) +
1373 priv->rx_usecs_low;
1374 } else {
1375 moder_time = priv->rx_usecs_low;
1376 }
1377
1378 if (moder_time != priv->last_moder_time[ring]) {
1379 priv->last_moder_time[ring] = moder_time;
1380 cq = priv->rx_cq[ring];
1381 cq->moder_time = moder_time;
1382 cq->moder_cnt = priv->rx_frames;
1383 err = mlx4_en_set_cq_moder(priv, cq);
1384 if (err)
1385 en_err(priv, "Failed modifying moderation for cq:%d\n",
1386 ring);
1387 }
1388 priv->last_moder_packets[ring] = rx_packets;
1389 priv->last_moder_bytes[ring] = rx_bytes;
1390 }
1391
1392 priv->last_moder_jiffies = jiffies;
1393 }
1394
1395 static void mlx4_en_do_get_stats(struct work_struct *work)
1396 {
1397 struct delayed_work *delay = to_delayed_work(work);
1398 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1399 stats_task);
1400 struct mlx4_en_dev *mdev = priv->mdev;
1401 int err;
1402
1403 mutex_lock(&mdev->state_lock);
1404 if (mdev->device_up) {
1405 if (priv->port_up) {
1406 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1407 if (err)
1408 en_dbg(HW, priv, "Could not update stats\n");
1409
1410 mlx4_en_auto_moderation(priv);
1411 }
1412
1413 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1414 }
1415 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1416 mlx4_en_do_set_mac(priv);
1417 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1418 }
1419 mutex_unlock(&mdev->state_lock);
1420 }
1421
1422 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1423 * periodically
1424 */
1425 static void mlx4_en_service_task(struct work_struct *work)
1426 {
1427 struct delayed_work *delay = to_delayed_work(work);
1428 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1429 service_task);
1430 struct mlx4_en_dev *mdev = priv->mdev;
1431
1432 mutex_lock(&mdev->state_lock);
1433 if (mdev->device_up) {
1434 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1435 mlx4_en_ptp_overflow_check(mdev);
1436
1437 queue_delayed_work(mdev->workqueue, &priv->service_task,
1438 SERVICE_TASK_DELAY);
1439 }
1440 mutex_unlock(&mdev->state_lock);
1441 }
1442
1443 static void mlx4_en_linkstate(struct work_struct *work)
1444 {
1445 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1446 linkstate_task);
1447 struct mlx4_en_dev *mdev = priv->mdev;
1448 int linkstate = priv->link_state;
1449
1450 mutex_lock(&mdev->state_lock);
1451 /* If observable port state changed set carrier state and
1452 * report to system log */
1453 if (priv->last_link_state != linkstate) {
1454 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1455 en_info(priv, "Link Down\n");
1456 netif_carrier_off(priv->dev);
1457 } else {
1458 en_info(priv, "Link Up\n");
1459 netif_carrier_on(priv->dev);
1460 }
1461 }
1462 priv->last_link_state = linkstate;
1463 mutex_unlock(&mdev->state_lock);
1464 }
1465
1466
1467 int mlx4_en_start_port(struct net_device *dev)
1468 {
1469 struct mlx4_en_priv *priv = netdev_priv(dev);
1470 struct mlx4_en_dev *mdev = priv->mdev;
1471 struct mlx4_en_cq *cq;
1472 struct mlx4_en_tx_ring *tx_ring;
1473 int rx_index = 0;
1474 int tx_index = 0;
1475 int err = 0;
1476 int i;
1477 int j;
1478 u8 mc_list[16] = {0};
1479
1480 if (priv->port_up) {
1481 en_dbg(DRV, priv, "start port called while port already up\n");
1482 return 0;
1483 }
1484
1485 INIT_LIST_HEAD(&priv->mc_list);
1486 INIT_LIST_HEAD(&priv->curr_list);
1487 INIT_LIST_HEAD(&priv->ethtool_list);
1488 memset(&priv->ethtool_rules[0], 0,
1489 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1490
1491 /* Calculate Rx buf size */
1492 dev->mtu = min(dev->mtu, priv->max_mtu);
1493 mlx4_en_calc_rx_buf(dev);
1494 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1495
1496 /* Configure rx cq's and rings */
1497 err = mlx4_en_activate_rx_rings(priv);
1498 if (err) {
1499 en_err(priv, "Failed to activate RX rings\n");
1500 return err;
1501 }
1502 for (i = 0; i < priv->rx_ring_num; i++) {
1503 cq = priv->rx_cq[i];
1504
1505 mlx4_en_cq_init_lock(cq);
1506
1507 err = mlx4_en_activate_cq(priv, cq, i);
1508 if (err) {
1509 en_err(priv, "Failed activating Rx CQ\n");
1510 goto cq_err;
1511 }
1512 for (j = 0; j < cq->size; j++)
1513 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1514 err = mlx4_en_set_cq_moder(priv, cq);
1515 if (err) {
1516 en_err(priv, "Failed setting cq moderation parameters");
1517 mlx4_en_deactivate_cq(priv, cq);
1518 goto cq_err;
1519 }
1520 mlx4_en_arm_cq(priv, cq);
1521 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1522 ++rx_index;
1523 }
1524
1525 /* Set qp number */
1526 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1527 err = mlx4_en_get_qp(priv);
1528 if (err) {
1529 en_err(priv, "Failed getting eth qp\n");
1530 goto cq_err;
1531 }
1532 mdev->mac_removed[priv->port] = 0;
1533
1534 err = mlx4_en_config_rss_steer(priv);
1535 if (err) {
1536 en_err(priv, "Failed configuring rss steering\n");
1537 goto mac_err;
1538 }
1539
1540 err = mlx4_en_create_drop_qp(priv);
1541 if (err)
1542 goto rss_err;
1543
1544 /* Configure tx cq's and rings */
1545 for (i = 0; i < priv->tx_ring_num; i++) {
1546 /* Configure cq */
1547 cq = priv->tx_cq[i];
1548 err = mlx4_en_activate_cq(priv, cq, i);
1549 if (err) {
1550 en_err(priv, "Failed allocating Tx CQ\n");
1551 goto tx_err;
1552 }
1553 err = mlx4_en_set_cq_moder(priv, cq);
1554 if (err) {
1555 en_err(priv, "Failed setting cq moderation parameters");
1556 mlx4_en_deactivate_cq(priv, cq);
1557 goto tx_err;
1558 }
1559 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1560 cq->buf->wqe_index = cpu_to_be16(0xffff);
1561
1562 /* Configure ring */
1563 tx_ring = priv->tx_ring[i];
1564 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1565 i / priv->num_tx_rings_p_up);
1566 if (err) {
1567 en_err(priv, "Failed allocating Tx ring\n");
1568 mlx4_en_deactivate_cq(priv, cq);
1569 goto tx_err;
1570 }
1571 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1572
1573 /* Arm CQ for TX completions */
1574 mlx4_en_arm_cq(priv, cq);
1575
1576 /* Set initial ownership of all Tx TXBBs to SW (1) */
1577 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1578 *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1579 ++tx_index;
1580 }
1581
1582 /* Configure port */
1583 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1584 priv->rx_skb_size + ETH_FCS_LEN,
1585 priv->prof->tx_pause,
1586 priv->prof->tx_ppp,
1587 priv->prof->rx_pause,
1588 priv->prof->rx_ppp);
1589 if (err) {
1590 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1591 priv->port, err);
1592 goto tx_err;
1593 }
1594 /* Set default qp number */
1595 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1596 if (err) {
1597 en_err(priv, "Failed setting default qp numbers\n");
1598 goto tx_err;
1599 }
1600
1601 /* Init port */
1602 en_dbg(HW, priv, "Initializing port\n");
1603 err = mlx4_INIT_PORT(mdev->dev, priv->port);
1604 if (err) {
1605 en_err(priv, "Failed Initializing port\n");
1606 goto tx_err;
1607 }
1608
1609 /* Attach rx QP to bradcast address */
1610 memset(&mc_list[10], 0xff, ETH_ALEN);
1611 mc_list[5] = priv->port; /* needed for B0 steering support */
1612 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1613 priv->port, 0, MLX4_PROT_ETH,
1614 &priv->broadcast_id))
1615 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1616
1617 /* Must redo promiscuous mode setup. */
1618 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1619
1620 /* Schedule multicast task to populate multicast list */
1621 queue_work(mdev->workqueue, &priv->rx_mode_task);
1622
1623 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1624
1625 priv->port_up = true;
1626 netif_tx_start_all_queues(dev);
1627 netif_device_attach(dev);
1628
1629 return 0;
1630
1631 tx_err:
1632 while (tx_index--) {
1633 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1634 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1635 }
1636 mlx4_en_destroy_drop_qp(priv);
1637 rss_err:
1638 mlx4_en_release_rss_steer(priv);
1639 mac_err:
1640 mlx4_en_put_qp(priv);
1641 cq_err:
1642 while (rx_index--)
1643 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1644 for (i = 0; i < priv->rx_ring_num; i++)
1645 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1646
1647 return err; /* need to close devices */
1648 }
1649
1650
1651 void mlx4_en_stop_port(struct net_device *dev, int detach)
1652 {
1653 struct mlx4_en_priv *priv = netdev_priv(dev);
1654 struct mlx4_en_dev *mdev = priv->mdev;
1655 struct mlx4_en_mc_list *mclist, *tmp;
1656 struct ethtool_flow_id *flow, *tmp_flow;
1657 int i;
1658 u8 mc_list[16] = {0};
1659
1660 if (!priv->port_up) {
1661 en_dbg(DRV, priv, "stop port called while port already down\n");
1662 return;
1663 }
1664
1665 /* close port*/
1666 mlx4_CLOSE_PORT(mdev->dev, priv->port);
1667
1668 /* Synchronize with tx routine */
1669 netif_tx_lock_bh(dev);
1670 if (detach)
1671 netif_device_detach(dev);
1672 netif_tx_stop_all_queues(dev);
1673 netif_tx_unlock_bh(dev);
1674
1675 netif_tx_disable(dev);
1676
1677 /* Set port as not active */
1678 priv->port_up = false;
1679
1680 /* Promsicuous mode */
1681 if (mdev->dev->caps.steering_mode ==
1682 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1683 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1684 MLX4_EN_FLAG_MC_PROMISC);
1685 mlx4_flow_steer_promisc_remove(mdev->dev,
1686 priv->port,
1687 MLX4_FS_ALL_DEFAULT);
1688 mlx4_flow_steer_promisc_remove(mdev->dev,
1689 priv->port,
1690 MLX4_FS_MC_DEFAULT);
1691 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1692 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1693
1694 /* Disable promiscouos mode */
1695 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1696 priv->port);
1697
1698 /* Disable Multicast promisc */
1699 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1700 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1701 priv->port);
1702 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1703 }
1704 }
1705
1706 /* Detach All multicasts */
1707 memset(&mc_list[10], 0xff, ETH_ALEN);
1708 mc_list[5] = priv->port; /* needed for B0 steering support */
1709 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1710 MLX4_PROT_ETH, priv->broadcast_id);
1711 list_for_each_entry(mclist, &priv->curr_list, list) {
1712 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1713 mc_list[5] = priv->port;
1714 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1715 mc_list, MLX4_PROT_ETH, mclist->reg_id);
1716 }
1717 mlx4_en_clear_list(dev);
1718 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1719 list_del(&mclist->list);
1720 kfree(mclist);
1721 }
1722
1723 /* Flush multicast filter */
1724 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1725
1726 /* Remove flow steering rules for the port*/
1727 if (mdev->dev->caps.steering_mode ==
1728 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1729 ASSERT_RTNL();
1730 list_for_each_entry_safe(flow, tmp_flow,
1731 &priv->ethtool_list, list) {
1732 mlx4_flow_detach(mdev->dev, flow->id);
1733 list_del(&flow->list);
1734 }
1735 }
1736
1737 mlx4_en_destroy_drop_qp(priv);
1738
1739 /* Free TX Rings */
1740 for (i = 0; i < priv->tx_ring_num; i++) {
1741 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1742 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1743 }
1744 msleep(10);
1745
1746 for (i = 0; i < priv->tx_ring_num; i++)
1747 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1748
1749 /* Free RSS qps */
1750 mlx4_en_release_rss_steer(priv);
1751
1752 /* Unregister Mac address for the port */
1753 mlx4_en_put_qp(priv);
1754 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1755 mdev->mac_removed[priv->port] = 1;
1756
1757 /* Free RX Rings */
1758 for (i = 0; i < priv->rx_ring_num; i++) {
1759 struct mlx4_en_cq *cq = priv->rx_cq[i];
1760
1761 local_bh_disable();
1762 while (!mlx4_en_cq_lock_napi(cq)) {
1763 pr_info("CQ %d locked\n", i);
1764 mdelay(1);
1765 }
1766 local_bh_enable();
1767
1768 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state))
1769 msleep(1);
1770 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1771 mlx4_en_deactivate_cq(priv, cq);
1772 }
1773 }
1774
1775 static void mlx4_en_restart(struct work_struct *work)
1776 {
1777 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1778 watchdog_task);
1779 struct mlx4_en_dev *mdev = priv->mdev;
1780 struct net_device *dev = priv->dev;
1781
1782 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1783
1784 mutex_lock(&mdev->state_lock);
1785 if (priv->port_up) {
1786 mlx4_en_stop_port(dev, 1);
1787 if (mlx4_en_start_port(dev))
1788 en_err(priv, "Failed restarting port %d\n", priv->port);
1789 }
1790 mutex_unlock(&mdev->state_lock);
1791 }
1792
1793 static void mlx4_en_clear_stats(struct net_device *dev)
1794 {
1795 struct mlx4_en_priv *priv = netdev_priv(dev);
1796 struct mlx4_en_dev *mdev = priv->mdev;
1797 int i;
1798
1799 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1800 en_dbg(HW, priv, "Failed dumping statistics\n");
1801
1802 memset(&priv->stats, 0, sizeof(priv->stats));
1803 memset(&priv->pstats, 0, sizeof(priv->pstats));
1804 memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1805 memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1806
1807 for (i = 0; i < priv->tx_ring_num; i++) {
1808 priv->tx_ring[i]->bytes = 0;
1809 priv->tx_ring[i]->packets = 0;
1810 priv->tx_ring[i]->tx_csum = 0;
1811 }
1812 for (i = 0; i < priv->rx_ring_num; i++) {
1813 priv->rx_ring[i]->bytes = 0;
1814 priv->rx_ring[i]->packets = 0;
1815 priv->rx_ring[i]->csum_ok = 0;
1816 priv->rx_ring[i]->csum_none = 0;
1817 }
1818 }
1819
1820 static int mlx4_en_open(struct net_device *dev)
1821 {
1822 struct mlx4_en_priv *priv = netdev_priv(dev);
1823 struct mlx4_en_dev *mdev = priv->mdev;
1824 int err = 0;
1825
1826 mutex_lock(&mdev->state_lock);
1827
1828 if (!mdev->device_up) {
1829 en_err(priv, "Cannot open - device down/disabled\n");
1830 err = -EBUSY;
1831 goto out;
1832 }
1833
1834 /* Reset HW statistics and SW counters */
1835 mlx4_en_clear_stats(dev);
1836
1837 err = mlx4_en_start_port(dev);
1838 if (err)
1839 en_err(priv, "Failed starting port:%d\n", priv->port);
1840
1841 out:
1842 mutex_unlock(&mdev->state_lock);
1843 return err;
1844 }
1845
1846
1847 static int mlx4_en_close(struct net_device *dev)
1848 {
1849 struct mlx4_en_priv *priv = netdev_priv(dev);
1850 struct mlx4_en_dev *mdev = priv->mdev;
1851
1852 en_dbg(IFDOWN, priv, "Close port called\n");
1853
1854 mutex_lock(&mdev->state_lock);
1855
1856 mlx4_en_stop_port(dev, 0);
1857 netif_carrier_off(dev);
1858
1859 mutex_unlock(&mdev->state_lock);
1860 return 0;
1861 }
1862
1863 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1864 {
1865 int i;
1866
1867 #ifdef CONFIG_RFS_ACCEL
1868 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1869 priv->dev->rx_cpu_rmap = NULL;
1870 #endif
1871
1872 for (i = 0; i < priv->tx_ring_num; i++) {
1873 if (priv->tx_ring && priv->tx_ring[i])
1874 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1875 if (priv->tx_cq && priv->tx_cq[i])
1876 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1877 }
1878
1879 for (i = 0; i < priv->rx_ring_num; i++) {
1880 if (priv->rx_ring[i])
1881 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1882 priv->prof->rx_ring_size, priv->stride);
1883 if (priv->rx_cq[i])
1884 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1885 }
1886
1887 if (priv->base_tx_qpn) {
1888 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1889 priv->base_tx_qpn = 0;
1890 }
1891 }
1892
1893 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1894 {
1895 struct mlx4_en_port_profile *prof = priv->prof;
1896 int i;
1897 int err;
1898 int node;
1899
1900 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1901 if (err) {
1902 en_err(priv, "failed reserving range for TX rings\n");
1903 return err;
1904 }
1905
1906 /* Create tx Rings */
1907 for (i = 0; i < priv->tx_ring_num; i++) {
1908 node = cpu_to_node(i % num_online_cpus());
1909 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1910 prof->tx_ring_size, i, TX, node))
1911 goto err;
1912
1913 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], priv->base_tx_qpn + i,
1914 prof->tx_ring_size, TXBB_SIZE, node))
1915 goto err;
1916 }
1917
1918 /* Create rx Rings */
1919 for (i = 0; i < priv->rx_ring_num; i++) {
1920 node = cpu_to_node(i % num_online_cpus());
1921 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1922 prof->rx_ring_size, i, RX, node))
1923 goto err;
1924
1925 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1926 prof->rx_ring_size, priv->stride,
1927 node))
1928 goto err;
1929 }
1930
1931 #ifdef CONFIG_RFS_ACCEL
1932 if (priv->mdev->dev->caps.comp_pool) {
1933 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
1934 if (!priv->dev->rx_cpu_rmap)
1935 goto err;
1936 }
1937 #endif
1938
1939 return 0;
1940
1941 err:
1942 en_err(priv, "Failed to allocate NIC resources\n");
1943 for (i = 0; i < priv->rx_ring_num; i++) {
1944 if (priv->rx_ring[i])
1945 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1946 prof->rx_ring_size,
1947 priv->stride);
1948 if (priv->rx_cq[i])
1949 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1950 }
1951 for (i = 0; i < priv->tx_ring_num; i++) {
1952 if (priv->tx_ring[i])
1953 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1954 if (priv->tx_cq[i])
1955 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1956 }
1957 return -ENOMEM;
1958 }
1959
1960
1961 void mlx4_en_destroy_netdev(struct net_device *dev)
1962 {
1963 struct mlx4_en_priv *priv = netdev_priv(dev);
1964 struct mlx4_en_dev *mdev = priv->mdev;
1965
1966 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1967
1968 /* Unregister device - this will close the port if it was up */
1969 if (priv->registered)
1970 unregister_netdev(dev);
1971
1972 if (priv->allocated)
1973 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1974
1975 cancel_delayed_work(&priv->stats_task);
1976 cancel_delayed_work(&priv->service_task);
1977 /* flush any pending task for this netdev */
1978 flush_workqueue(mdev->workqueue);
1979
1980 /* Detach the netdev so tasks would not attempt to access it */
1981 mutex_lock(&mdev->state_lock);
1982 mdev->pndev[priv->port] = NULL;
1983 mutex_unlock(&mdev->state_lock);
1984
1985 mlx4_en_free_resources(priv);
1986
1987 kfree(priv->tx_ring);
1988 kfree(priv->tx_cq);
1989
1990 free_netdev(dev);
1991 }
1992
1993 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1994 {
1995 struct mlx4_en_priv *priv = netdev_priv(dev);
1996 struct mlx4_en_dev *mdev = priv->mdev;
1997 int err = 0;
1998
1999 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2000 dev->mtu, new_mtu);
2001
2002 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2003 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2004 return -EPERM;
2005 }
2006 dev->mtu = new_mtu;
2007
2008 if (netif_running(dev)) {
2009 mutex_lock(&mdev->state_lock);
2010 if (!mdev->device_up) {
2011 /* NIC is probably restarting - let watchdog task reset
2012 * the port */
2013 en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2014 } else {
2015 mlx4_en_stop_port(dev, 1);
2016 err = mlx4_en_start_port(dev);
2017 if (err) {
2018 en_err(priv, "Failed restarting port:%d\n",
2019 priv->port);
2020 queue_work(mdev->workqueue, &priv->watchdog_task);
2021 }
2022 }
2023 mutex_unlock(&mdev->state_lock);
2024 }
2025 return 0;
2026 }
2027
2028 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2029 {
2030 struct mlx4_en_priv *priv = netdev_priv(dev);
2031 struct mlx4_en_dev *mdev = priv->mdev;
2032 struct hwtstamp_config config;
2033
2034 if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2035 return -EFAULT;
2036
2037 /* reserved for future extensions */
2038 if (config.flags)
2039 return -EINVAL;
2040
2041 /* device doesn't support time stamping */
2042 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2043 return -EINVAL;
2044
2045 /* TX HW timestamp */
2046 switch (config.tx_type) {
2047 case HWTSTAMP_TX_OFF:
2048 case HWTSTAMP_TX_ON:
2049 break;
2050 default:
2051 return -ERANGE;
2052 }
2053
2054 /* RX HW timestamp */
2055 switch (config.rx_filter) {
2056 case HWTSTAMP_FILTER_NONE:
2057 break;
2058 case HWTSTAMP_FILTER_ALL:
2059 case HWTSTAMP_FILTER_SOME:
2060 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2061 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2062 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2063 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2064 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2065 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2066 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2067 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2068 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2069 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2070 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2071 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2072 config.rx_filter = HWTSTAMP_FILTER_ALL;
2073 break;
2074 default:
2075 return -ERANGE;
2076 }
2077
2078 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
2079 config.tx_type = HWTSTAMP_TX_OFF;
2080 config.rx_filter = HWTSTAMP_FILTER_NONE;
2081 }
2082
2083 return copy_to_user(ifr->ifr_data, &config,
2084 sizeof(config)) ? -EFAULT : 0;
2085 }
2086
2087 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2088 {
2089 struct mlx4_en_priv *priv = netdev_priv(dev);
2090
2091 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2092 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2093 }
2094
2095 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2096 {
2097 switch (cmd) {
2098 case SIOCSHWTSTAMP:
2099 return mlx4_en_hwtstamp_set(dev, ifr);
2100 case SIOCGHWTSTAMP:
2101 return mlx4_en_hwtstamp_get(dev, ifr);
2102 default:
2103 return -EOPNOTSUPP;
2104 }
2105 }
2106
2107 static int mlx4_en_set_features(struct net_device *netdev,
2108 netdev_features_t features)
2109 {
2110 struct mlx4_en_priv *priv = netdev_priv(netdev);
2111
2112 if (features & NETIF_F_LOOPBACK)
2113 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2114 else
2115 priv->ctrl_flags &=
2116 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2117
2118 mlx4_en_update_loopback_state(netdev, features);
2119
2120 return 0;
2121
2122 }
2123
2124 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2125 {
2126 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2127 struct mlx4_en_dev *mdev = en_priv->mdev;
2128 u64 mac_u64 = mlx4_en_mac_to_u64(mac);
2129
2130 if (!is_valid_ether_addr(mac))
2131 return -EINVAL;
2132
2133 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2134 }
2135
2136 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2137 {
2138 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2139 struct mlx4_en_dev *mdev = en_priv->mdev;
2140
2141 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2142 }
2143
2144 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2145 {
2146 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2147 struct mlx4_en_dev *mdev = en_priv->mdev;
2148
2149 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2150 }
2151
2152 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2153 {
2154 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2155 struct mlx4_en_dev *mdev = en_priv->mdev;
2156
2157 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2158 }
2159
2160 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2161 {
2162 struct mlx4_en_priv *en_priv = netdev_priv(dev);
2163 struct mlx4_en_dev *mdev = en_priv->mdev;
2164
2165 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2166 }
2167
2168 #define PORT_ID_BYTE_LEN 8
2169 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2170 struct netdev_phys_port_id *ppid)
2171 {
2172 struct mlx4_en_priv *priv = netdev_priv(dev);
2173 struct mlx4_dev *mdev = priv->mdev->dev;
2174 int i;
2175 u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2176
2177 if (!phys_port_id)
2178 return -EOPNOTSUPP;
2179
2180 ppid->id_len = sizeof(phys_port_id);
2181 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2182 ppid->id[i] = phys_port_id & 0xff;
2183 phys_port_id >>= 8;
2184 }
2185 return 0;
2186 }
2187
2188 static const struct net_device_ops mlx4_netdev_ops = {
2189 .ndo_open = mlx4_en_open,
2190 .ndo_stop = mlx4_en_close,
2191 .ndo_start_xmit = mlx4_en_xmit,
2192 .ndo_select_queue = mlx4_en_select_queue,
2193 .ndo_get_stats = mlx4_en_get_stats,
2194 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2195 .ndo_set_mac_address = mlx4_en_set_mac,
2196 .ndo_validate_addr = eth_validate_addr,
2197 .ndo_change_mtu = mlx4_en_change_mtu,
2198 .ndo_do_ioctl = mlx4_en_ioctl,
2199 .ndo_tx_timeout = mlx4_en_tx_timeout,
2200 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2201 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2202 #ifdef CONFIG_NET_POLL_CONTROLLER
2203 .ndo_poll_controller = mlx4_en_netpoll,
2204 #endif
2205 .ndo_set_features = mlx4_en_set_features,
2206 .ndo_setup_tc = mlx4_en_setup_tc,
2207 #ifdef CONFIG_RFS_ACCEL
2208 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2209 #endif
2210 #ifdef CONFIG_NET_RX_BUSY_POLL
2211 .ndo_busy_poll = mlx4_en_low_latency_recv,
2212 #endif
2213 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2214 };
2215
2216 static const struct net_device_ops mlx4_netdev_ops_master = {
2217 .ndo_open = mlx4_en_open,
2218 .ndo_stop = mlx4_en_close,
2219 .ndo_start_xmit = mlx4_en_xmit,
2220 .ndo_select_queue = mlx4_en_select_queue,
2221 .ndo_get_stats = mlx4_en_get_stats,
2222 .ndo_set_rx_mode = mlx4_en_set_rx_mode,
2223 .ndo_set_mac_address = mlx4_en_set_mac,
2224 .ndo_validate_addr = eth_validate_addr,
2225 .ndo_change_mtu = mlx4_en_change_mtu,
2226 .ndo_tx_timeout = mlx4_en_tx_timeout,
2227 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
2228 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
2229 .ndo_set_vf_mac = mlx4_en_set_vf_mac,
2230 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
2231 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
2232 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
2233 .ndo_get_vf_config = mlx4_en_get_vf_config,
2234 #ifdef CONFIG_NET_POLL_CONTROLLER
2235 .ndo_poll_controller = mlx4_en_netpoll,
2236 #endif
2237 .ndo_set_features = mlx4_en_set_features,
2238 .ndo_setup_tc = mlx4_en_setup_tc,
2239 #ifdef CONFIG_RFS_ACCEL
2240 .ndo_rx_flow_steer = mlx4_en_filter_rfs,
2241 #endif
2242 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
2243 };
2244
2245 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2246 struct mlx4_en_port_profile *prof)
2247 {
2248 struct net_device *dev;
2249 struct mlx4_en_priv *priv;
2250 int i;
2251 int err;
2252 u64 mac_u64;
2253
2254 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2255 MAX_TX_RINGS, MAX_RX_RINGS);
2256 if (dev == NULL)
2257 return -ENOMEM;
2258
2259 netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2260 netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2261
2262 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2263 dev->dev_id = port - 1;
2264
2265 /*
2266 * Initialize driver private data
2267 */
2268
2269 priv = netdev_priv(dev);
2270 memset(priv, 0, sizeof(struct mlx4_en_priv));
2271 priv->dev = dev;
2272 priv->mdev = mdev;
2273 priv->ddev = &mdev->pdev->dev;
2274 priv->prof = prof;
2275 priv->port = port;
2276 priv->port_up = false;
2277 priv->flags = prof->flags;
2278 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2279 MLX4_WQE_CTRL_SOLICITED);
2280 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2281 priv->tx_ring_num = prof->tx_ring_num;
2282
2283 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2284 GFP_KERNEL);
2285 if (!priv->tx_ring) {
2286 err = -ENOMEM;
2287 goto out;
2288 }
2289 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2290 GFP_KERNEL);
2291 if (!priv->tx_cq) {
2292 err = -ENOMEM;
2293 goto out;
2294 }
2295 priv->rx_ring_num = prof->rx_ring_num;
2296 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2297 priv->mac_index = -1;
2298 priv->msg_enable = MLX4_EN_MSG_LEVEL;
2299 spin_lock_init(&priv->stats_lock);
2300 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2301 INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2302 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2303 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2304 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2305 #ifdef CONFIG_MLX4_EN_DCB
2306 if (!mlx4_is_slave(priv->mdev->dev)) {
2307 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2308 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2309 } else {
2310 en_info(priv, "enabling only PFC DCB ops\n");
2311 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2312 }
2313 }
2314 #endif
2315
2316 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2317 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2318
2319 /* Query for default mac and max mtu */
2320 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2321
2322 /* Set default MAC */
2323 dev->addr_len = ETH_ALEN;
2324 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2325 if (!is_valid_ether_addr(dev->dev_addr)) {
2326 if (mlx4_is_slave(priv->mdev->dev)) {
2327 eth_hw_addr_random(dev);
2328 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2329 mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr);
2330 mdev->dev->caps.def_mac[priv->port] = mac_u64;
2331 } else {
2332 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2333 priv->port, dev->dev_addr);
2334 err = -EINVAL;
2335 goto out;
2336 }
2337 }
2338
2339 memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
2340
2341 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2342 DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2343 err = mlx4_en_alloc_resources(priv);
2344 if (err)
2345 goto out;
2346
2347 #ifdef CONFIG_RFS_ACCEL
2348 INIT_LIST_HEAD(&priv->filters);
2349 spin_lock_init(&priv->filters_lock);
2350 #endif
2351
2352 /* Initialize time stamping config */
2353 priv->hwtstamp_config.flags = 0;
2354 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2355 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2356
2357 /* Allocate page for receive rings */
2358 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2359 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2360 if (err) {
2361 en_err(priv, "Failed to allocate page for rx qps\n");
2362 goto out;
2363 }
2364 priv->allocated = 1;
2365
2366 /*
2367 * Initialize netdev entry points
2368 */
2369 if (mlx4_is_master(priv->mdev->dev))
2370 dev->netdev_ops = &mlx4_netdev_ops_master;
2371 else
2372 dev->netdev_ops = &mlx4_netdev_ops;
2373 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2374 netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2375 netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2376
2377 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
2378
2379 /*
2380 * Set driver features
2381 */
2382 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2383 if (mdev->LSO_support)
2384 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2385
2386 dev->vlan_features = dev->hw_features;
2387
2388 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2389 dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2390 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2391 NETIF_F_HW_VLAN_CTAG_FILTER;
2392 dev->hw_features |= NETIF_F_LOOPBACK;
2393
2394 if (mdev->dev->caps.steering_mode ==
2395 MLX4_STEERING_MODE_DEVICE_MANAGED)
2396 dev->hw_features |= NETIF_F_NTUPLE;
2397
2398 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2399 dev->priv_flags |= IFF_UNICAST_FLT;
2400
2401 mdev->pndev[port] = dev;
2402
2403 netif_carrier_off(dev);
2404 mlx4_en_set_default_moderation(priv);
2405
2406 err = register_netdev(dev);
2407 if (err) {
2408 en_err(priv, "Netdev registration failed for port %d\n", port);
2409 goto out;
2410 }
2411 priv->registered = 1;
2412
2413 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2414 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2415
2416 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2417
2418 /* Configure port */
2419 mlx4_en_calc_rx_buf(dev);
2420 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2421 priv->rx_skb_size + ETH_FCS_LEN,
2422 prof->tx_pause, prof->tx_ppp,
2423 prof->rx_pause, prof->rx_ppp);
2424 if (err) {
2425 en_err(priv, "Failed setting port general configurations "
2426 "for port %d, with error %d\n", priv->port, err);
2427 goto out;
2428 }
2429
2430 /* Init port */
2431 en_warn(priv, "Initializing port\n");
2432 err = mlx4_INIT_PORT(mdev->dev, priv->port);
2433 if (err) {
2434 en_err(priv, "Failed Initializing port\n");
2435 goto out;
2436 }
2437 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2438
2439 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2440 queue_delayed_work(mdev->workqueue, &priv->service_task,
2441 SERVICE_TASK_DELAY);
2442
2443 return 0;
2444
2445 out:
2446 mlx4_en_destroy_netdev(dev);
2447 return err;
2448 }
2449
Linux kernel - Deliverables
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