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