1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 /* Copyright (C) 2018 Netronome Systems, Inc. */
3
4 #include "main.h"
5
6 /* LAG group config flags. */
7 #define NFP_FL_LAG_LAST BIT(1)
8 #define NFP_FL_LAG_FIRST BIT(2)
9 #define NFP_FL_LAG_DATA BIT(3)
10 #define NFP_FL_LAG_XON BIT(4)
11 #define NFP_FL_LAG_SYNC BIT(5)
12 #define NFP_FL_LAG_SWITCH BIT(6)
13 #define NFP_FL_LAG_RESET BIT(7)
14
15 /* LAG port state flags. */
16 #define NFP_PORT_LAG_LINK_UP BIT(0)
17 #define NFP_PORT_LAG_TX_ENABLED BIT(1)
18 #define NFP_PORT_LAG_CHANGED BIT(2)
19
20 enum nfp_fl_lag_batch {
21 NFP_FL_LAG_BATCH_FIRST,
22 NFP_FL_LAG_BATCH_MEMBER,
23 NFP_FL_LAG_BATCH_FINISHED
24 };
25
26 /**
27 * struct nfp_flower_cmsg_lag_config - control message payload for LAG config
28 * @ctrl_flags: Configuration flags
29 * @reserved: Reserved for future use
30 * @ttl: Time to live of packet - host always sets to 0xff
31 * @pkt_number: Config message packet number - increment for each message
32 * @batch_ver: Batch version of messages - increment for each batch of messages
33 * @group_id: Group ID applicable
34 * @group_inst: Group instance number - increment when group is reused
35 * @members: Array of 32-bit words listing all active group members
36 */
37 struct nfp_flower_cmsg_lag_config {
38 u8 ctrl_flags;
39 u8 reserved[2];
40 u8 ttl;
41 __be32 pkt_number;
42 __be32 batch_ver;
43 __be32 group_id;
44 __be32 group_inst;
45 __be32 members[];
46 };
47
48 /**
49 * struct nfp_fl_lag_group - list entry for each LAG group
50 * @group_id: Assigned group ID for host/kernel sync
51 * @group_inst: Group instance in case of ID reuse
52 * @list: List entry
53 * @master_ndev: Group master Netdev
54 * @dirty: Marked if the group needs synced to HW
55 * @offloaded: Marked if the group is currently offloaded to NIC
56 * @to_remove: Marked if the group should be removed from NIC
57 * @to_destroy: Marked if the group should be removed from driver
58 * @slave_cnt: Number of slaves in group
59 */
60 struct nfp_fl_lag_group {
61 unsigned int group_id;
62 u8 group_inst;
63 struct list_head list;
64 struct net_device *master_ndev;
65 bool dirty;
66 bool offloaded;
67 bool to_remove;
68 bool to_destroy;
69 unsigned int slave_cnt;
70 };
71
72 #define NFP_FL_LAG_PKT_NUMBER_MASK GENMASK(30, 0)
73 #define NFP_FL_LAG_VERSION_MASK GENMASK(22, 0)
74 #define NFP_FL_LAG_HOST_TTL 0xff
75
76 /* Use this ID with zero members to ack a batch config */
77 #define NFP_FL_LAG_SYNC_ID 0
78 #define NFP_FL_LAG_GROUP_MIN 1 /* ID 0 reserved */
79 #define NFP_FL_LAG_GROUP_MAX 32 /* IDs 1 to 31 are valid */
80
81 /* wait for more config */
82 #define NFP_FL_LAG_DELAY (msecs_to_jiffies(2))
83
84 #define NFP_FL_LAG_RETRANS_LIMIT 100 /* max retrans cmsgs to store */
85
nfp_fl_get_next_pkt_number(struct nfp_fl_lag * lag)86 static unsigned int nfp_fl_get_next_pkt_number(struct nfp_fl_lag *lag)
87 {
88 lag->pkt_num++;
89 lag->pkt_num &= NFP_FL_LAG_PKT_NUMBER_MASK;
90
91 return lag->pkt_num;
92 }
93
nfp_fl_increment_version(struct nfp_fl_lag * lag)94 static void nfp_fl_increment_version(struct nfp_fl_lag *lag)
95 {
96 /* LSB is not considered by firmware so add 2 for each increment. */
97 lag->batch_ver += 2;
98 lag->batch_ver &= NFP_FL_LAG_VERSION_MASK;
99
100 /* Zero is reserved by firmware. */
101 if (!lag->batch_ver)
102 lag->batch_ver += 2;
103 }
104
105 static struct nfp_fl_lag_group *
nfp_fl_lag_group_create(struct nfp_fl_lag * lag,struct net_device * master)106 nfp_fl_lag_group_create(struct nfp_fl_lag *lag, struct net_device *master)
107 {
108 struct nfp_fl_lag_group *group;
109 struct nfp_flower_priv *priv;
110 int id;
111
112 priv = container_of(lag, struct nfp_flower_priv, nfp_lag);
113
114 id = ida_simple_get(&lag->ida_handle, NFP_FL_LAG_GROUP_MIN,
115 NFP_FL_LAG_GROUP_MAX, GFP_KERNEL);
116 if (id < 0) {
117 nfp_flower_cmsg_warn(priv->app,
118 "No more bonding groups available\n");
119 return ERR_PTR(id);
120 }
121
122 group = kmalloc(sizeof(*group), GFP_KERNEL);
123 if (!group) {
124 ida_simple_remove(&lag->ida_handle, id);
125 return ERR_PTR(-ENOMEM);
126 }
127
128 group->group_id = id;
129 group->master_ndev = master;
130 group->dirty = true;
131 group->offloaded = false;
132 group->to_remove = false;
133 group->to_destroy = false;
134 group->slave_cnt = 0;
135 group->group_inst = ++lag->global_inst;
136 list_add_tail(&group->list, &lag->group_list);
137
138 return group;
139 }
140
141 static struct nfp_fl_lag_group *
nfp_fl_lag_find_group_for_master_with_lag(struct nfp_fl_lag * lag,struct net_device * master)142 nfp_fl_lag_find_group_for_master_with_lag(struct nfp_fl_lag *lag,
143 struct net_device *master)
144 {
145 struct nfp_fl_lag_group *entry;
146
147 if (!master)
148 return NULL;
149
150 list_for_each_entry(entry, &lag->group_list, list)
151 if (entry->master_ndev == master)
152 return entry;
153
154 return NULL;
155 }
156
nfp_flower_lag_populate_pre_action(struct nfp_app * app,struct net_device * master,struct nfp_fl_pre_lag * pre_act,struct netlink_ext_ack * extack)157 int nfp_flower_lag_populate_pre_action(struct nfp_app *app,
158 struct net_device *master,
159 struct nfp_fl_pre_lag *pre_act,
160 struct netlink_ext_ack *extack)
161 {
162 struct nfp_flower_priv *priv = app->priv;
163 struct nfp_fl_lag_group *group = NULL;
164 __be32 temp_vers;
165
166 mutex_lock(&priv->nfp_lag.lock);
167 group = nfp_fl_lag_find_group_for_master_with_lag(&priv->nfp_lag,
168 master);
169 if (!group) {
170 mutex_unlock(&priv->nfp_lag.lock);
171 NL_SET_ERR_MSG_MOD(extack, "invalid entry: group does not exist for LAG action");
172 return -ENOENT;
173 }
174
175 pre_act->group_id = cpu_to_be16(group->group_id);
176 temp_vers = cpu_to_be32(priv->nfp_lag.batch_ver <<
177 NFP_FL_PRE_LAG_VER_OFF);
178 memcpy(pre_act->lag_version, &temp_vers, 3);
179 pre_act->instance = group->group_inst;
180 mutex_unlock(&priv->nfp_lag.lock);
181
182 return 0;
183 }
184
nfp_flower_lag_get_output_id(struct nfp_app * app,struct net_device * master)185 int nfp_flower_lag_get_output_id(struct nfp_app *app, struct net_device *master)
186 {
187 struct nfp_flower_priv *priv = app->priv;
188 struct nfp_fl_lag_group *group = NULL;
189 int group_id = -ENOENT;
190
191 mutex_lock(&priv->nfp_lag.lock);
192 group = nfp_fl_lag_find_group_for_master_with_lag(&priv->nfp_lag,
193 master);
194 if (group)
195 group_id = group->group_id;
196 mutex_unlock(&priv->nfp_lag.lock);
197
198 return group_id;
199 }
200
201 static int
nfp_fl_lag_config_group(struct nfp_fl_lag * lag,struct nfp_fl_lag_group * group,struct net_device ** active_members,unsigned int member_cnt,enum nfp_fl_lag_batch * batch)202 nfp_fl_lag_config_group(struct nfp_fl_lag *lag, struct nfp_fl_lag_group *group,
203 struct net_device **active_members,
204 unsigned int member_cnt, enum nfp_fl_lag_batch *batch)
205 {
206 struct nfp_flower_cmsg_lag_config *cmsg_payload;
207 struct nfp_flower_priv *priv;
208 unsigned long int flags;
209 unsigned int size, i;
210 struct sk_buff *skb;
211
212 priv = container_of(lag, struct nfp_flower_priv, nfp_lag);
213 size = sizeof(*cmsg_payload) + sizeof(__be32) * member_cnt;
214 skb = nfp_flower_cmsg_alloc(priv->app, size,
215 NFP_FLOWER_CMSG_TYPE_LAG_CONFIG,
216 GFP_KERNEL);
217 if (!skb)
218 return -ENOMEM;
219
220 cmsg_payload = nfp_flower_cmsg_get_data(skb);
221 flags = 0;
222
223 /* Increment batch version for each new batch of config messages. */
224 if (*batch == NFP_FL_LAG_BATCH_FIRST) {
225 flags |= NFP_FL_LAG_FIRST;
226 nfp_fl_increment_version(lag);
227 *batch = NFP_FL_LAG_BATCH_MEMBER;
228 }
229
230 /* If it is a reset msg then it is also the end of the batch. */
231 if (lag->rst_cfg) {
232 flags |= NFP_FL_LAG_RESET;
233 *batch = NFP_FL_LAG_BATCH_FINISHED;
234 }
235
236 /* To signal the end of a batch, both the switch and last flags are set
237 * and the the reserved SYNC group ID is used.
238 */
239 if (*batch == NFP_FL_LAG_BATCH_FINISHED) {
240 flags |= NFP_FL_LAG_SWITCH | NFP_FL_LAG_LAST;
241 lag->rst_cfg = false;
242 cmsg_payload->group_id = cpu_to_be32(NFP_FL_LAG_SYNC_ID);
243 cmsg_payload->group_inst = 0;
244 } else {
245 cmsg_payload->group_id = cpu_to_be32(group->group_id);
246 cmsg_payload->group_inst = cpu_to_be32(group->group_inst);
247 }
248
249 cmsg_payload->reserved[0] = 0;
250 cmsg_payload->reserved[1] = 0;
251 cmsg_payload->ttl = NFP_FL_LAG_HOST_TTL;
252 cmsg_payload->ctrl_flags = flags;
253 cmsg_payload->batch_ver = cpu_to_be32(lag->batch_ver);
254 cmsg_payload->pkt_number = cpu_to_be32(nfp_fl_get_next_pkt_number(lag));
255
256 for (i = 0; i < member_cnt; i++)
257 cmsg_payload->members[i] =
258 cpu_to_be32(nfp_repr_get_port_id(active_members[i]));
259
260 nfp_ctrl_tx(priv->app->ctrl, skb);
261 return 0;
262 }
263
nfp_fl_lag_do_work(struct work_struct * work)264 static void nfp_fl_lag_do_work(struct work_struct *work)
265 {
266 enum nfp_fl_lag_batch batch = NFP_FL_LAG_BATCH_FIRST;
267 struct nfp_fl_lag_group *entry, *storage;
268 struct delayed_work *delayed_work;
269 struct nfp_flower_priv *priv;
270 struct nfp_fl_lag *lag;
271 int err;
272
273 delayed_work = to_delayed_work(work);
274 lag = container_of(delayed_work, struct nfp_fl_lag, work);
275 priv = container_of(lag, struct nfp_flower_priv, nfp_lag);
276
277 mutex_lock(&lag->lock);
278 list_for_each_entry_safe(entry, storage, &lag->group_list, list) {
279 struct net_device *iter_netdev, **acti_netdevs;
280 struct nfp_flower_repr_priv *repr_priv;
281 int active_count = 0, slaves = 0;
282 struct nfp_repr *repr;
283 unsigned long *flags;
284
285 if (entry->to_remove) {
286 /* Active count of 0 deletes group on hw. */
287 err = nfp_fl_lag_config_group(lag, entry, NULL, 0,
288 &batch);
289 if (!err) {
290 entry->to_remove = false;
291 entry->offloaded = false;
292 } else {
293 nfp_flower_cmsg_warn(priv->app,
294 "group delete failed\n");
295 schedule_delayed_work(&lag->work,
296 NFP_FL_LAG_DELAY);
297 continue;
298 }
299
300 if (entry->to_destroy) {
301 ida_simple_remove(&lag->ida_handle,
302 entry->group_id);
303 list_del(&entry->list);
304 kfree(entry);
305 }
306 continue;
307 }
308
309 acti_netdevs = kmalloc_array(entry->slave_cnt,
310 sizeof(*acti_netdevs), GFP_KERNEL);
311
312 /* Include sanity check in the loop. It may be that a bond has
313 * changed between processing the last notification and the
314 * work queue triggering. If the number of slaves has changed
315 * or it now contains netdevs that cannot be offloaded, ignore
316 * the group until pending notifications are processed.
317 */
318 rcu_read_lock();
319 for_each_netdev_in_bond_rcu(entry->master_ndev, iter_netdev) {
320 if (!nfp_netdev_is_nfp_repr(iter_netdev)) {
321 slaves = 0;
322 break;
323 }
324
325 repr = netdev_priv(iter_netdev);
326
327 if (repr->app != priv->app) {
328 slaves = 0;
329 break;
330 }
331
332 slaves++;
333 if (slaves > entry->slave_cnt)
334 break;
335
336 /* Check the ports for state changes. */
337 repr_priv = repr->app_priv;
338 flags = &repr_priv->lag_port_flags;
339
340 if (*flags & NFP_PORT_LAG_CHANGED) {
341 *flags &= ~NFP_PORT_LAG_CHANGED;
342 entry->dirty = true;
343 }
344
345 if ((*flags & NFP_PORT_LAG_TX_ENABLED) &&
346 (*flags & NFP_PORT_LAG_LINK_UP))
347 acti_netdevs[active_count++] = iter_netdev;
348 }
349 rcu_read_unlock();
350
351 if (slaves != entry->slave_cnt || !entry->dirty) {
352 kfree(acti_netdevs);
353 continue;
354 }
355
356 err = nfp_fl_lag_config_group(lag, entry, acti_netdevs,
357 active_count, &batch);
358 if (!err) {
359 entry->offloaded = true;
360 entry->dirty = false;
361 } else {
362 nfp_flower_cmsg_warn(priv->app,
363 "group offload failed\n");
364 schedule_delayed_work(&lag->work, NFP_FL_LAG_DELAY);
365 }
366
367 kfree(acti_netdevs);
368 }
369
370 /* End the config batch if at least one packet has been batched. */
371 if (batch == NFP_FL_LAG_BATCH_MEMBER) {
372 batch = NFP_FL_LAG_BATCH_FINISHED;
373 err = nfp_fl_lag_config_group(lag, NULL, NULL, 0, &batch);
374 if (err)
375 nfp_flower_cmsg_warn(priv->app,
376 "group batch end cmsg failed\n");
377 }
378
379 mutex_unlock(&lag->lock);
380 }
381
382 static int
nfp_fl_lag_put_unprocessed(struct nfp_fl_lag * lag,struct sk_buff * skb)383 nfp_fl_lag_put_unprocessed(struct nfp_fl_lag *lag, struct sk_buff *skb)
384 {
385 struct nfp_flower_cmsg_lag_config *cmsg_payload;
386
387 cmsg_payload = nfp_flower_cmsg_get_data(skb);
388 if (be32_to_cpu(cmsg_payload->group_id) >= NFP_FL_LAG_GROUP_MAX)
389 return -EINVAL;
390
391 /* Drop cmsg retrans if storage limit is exceeded to prevent
392 * overloading. If the fw notices that expected messages have not been
393 * received in a given time block, it will request a full resync.
394 */
395 if (skb_queue_len(&lag->retrans_skbs) >= NFP_FL_LAG_RETRANS_LIMIT)
396 return -ENOSPC;
397
398 __skb_queue_tail(&lag->retrans_skbs, skb);
399
400 return 0;
401 }
402
nfp_fl_send_unprocessed(struct nfp_fl_lag * lag)403 static void nfp_fl_send_unprocessed(struct nfp_fl_lag *lag)
404 {
405 struct nfp_flower_priv *priv;
406 struct sk_buff *skb;
407
408 priv = container_of(lag, struct nfp_flower_priv, nfp_lag);
409
410 while ((skb = __skb_dequeue(&lag->retrans_skbs)))
411 nfp_ctrl_tx(priv->app->ctrl, skb);
412 }
413
nfp_flower_lag_unprocessed_msg(struct nfp_app * app,struct sk_buff * skb)414 bool nfp_flower_lag_unprocessed_msg(struct nfp_app *app, struct sk_buff *skb)
415 {
416 struct nfp_flower_cmsg_lag_config *cmsg_payload;
417 struct nfp_flower_priv *priv = app->priv;
418 struct nfp_fl_lag_group *group_entry;
419 unsigned long int flags;
420 bool store_skb = false;
421 int err;
422
423 cmsg_payload = nfp_flower_cmsg_get_data(skb);
424 flags = cmsg_payload->ctrl_flags;
425
426 /* Note the intentional fall through below. If DATA and XON are both
427 * set, the message will stored and sent again with the rest of the
428 * unprocessed messages list.
429 */
430
431 /* Store */
432 if (flags & NFP_FL_LAG_DATA)
433 if (!nfp_fl_lag_put_unprocessed(&priv->nfp_lag, skb))
434 store_skb = true;
435
436 /* Send stored */
437 if (flags & NFP_FL_LAG_XON)
438 nfp_fl_send_unprocessed(&priv->nfp_lag);
439
440 /* Resend all */
441 if (flags & NFP_FL_LAG_SYNC) {
442 /* To resend all config:
443 * 1) Clear all unprocessed messages
444 * 2) Mark all groups dirty
445 * 3) Reset NFP group config
446 * 4) Schedule a LAG config update
447 */
448
449 __skb_queue_purge(&priv->nfp_lag.retrans_skbs);
450
451 mutex_lock(&priv->nfp_lag.lock);
452 list_for_each_entry(group_entry, &priv->nfp_lag.group_list,
453 list)
454 group_entry->dirty = true;
455
456 err = nfp_flower_lag_reset(&priv->nfp_lag);
457 if (err)
458 nfp_flower_cmsg_warn(priv->app,
459 "mem err in group reset msg\n");
460 mutex_unlock(&priv->nfp_lag.lock);
461
462 schedule_delayed_work(&priv->nfp_lag.work, 0);
463 }
464
465 return store_skb;
466 }
467
468 static void
nfp_fl_lag_schedule_group_remove(struct nfp_fl_lag * lag,struct nfp_fl_lag_group * group)469 nfp_fl_lag_schedule_group_remove(struct nfp_fl_lag *lag,
470 struct nfp_fl_lag_group *group)
471 {
472 group->to_remove = true;
473
474 schedule_delayed_work(&lag->work, NFP_FL_LAG_DELAY);
475 }
476
477 static void
nfp_fl_lag_schedule_group_delete(struct nfp_fl_lag * lag,struct net_device * master)478 nfp_fl_lag_schedule_group_delete(struct nfp_fl_lag *lag,
479 struct net_device *master)
480 {
481 struct nfp_fl_lag_group *group;
482 struct nfp_flower_priv *priv;
483
484 priv = container_of(lag, struct nfp_flower_priv, nfp_lag);
485
486 if (!netif_is_bond_master(master))
487 return;
488
489 mutex_lock(&lag->lock);
490 group = nfp_fl_lag_find_group_for_master_with_lag(lag, master);
491 if (!group) {
492 mutex_unlock(&lag->lock);
493 nfp_warn(priv->app->cpp, "untracked bond got unregistered %s\n",
494 netdev_name(master));
495 return;
496 }
497
498 group->to_remove = true;
499 group->to_destroy = true;
500 mutex_unlock(&lag->lock);
501
502 schedule_delayed_work(&lag->work, NFP_FL_LAG_DELAY);
503 }
504
505 static int
nfp_fl_lag_changeupper_event(struct nfp_fl_lag * lag,struct netdev_notifier_changeupper_info * info)506 nfp_fl_lag_changeupper_event(struct nfp_fl_lag *lag,
507 struct netdev_notifier_changeupper_info *info)
508 {
509 struct net_device *upper = info->upper_dev, *iter_netdev;
510 struct netdev_lag_upper_info *lag_upper_info;
511 struct nfp_fl_lag_group *group;
512 struct nfp_flower_priv *priv;
513 unsigned int slave_count = 0;
514 bool can_offload = true;
515 struct nfp_repr *repr;
516
517 if (!netif_is_lag_master(upper))
518 return 0;
519
520 priv = container_of(lag, struct nfp_flower_priv, nfp_lag);
521
522 rcu_read_lock();
523 for_each_netdev_in_bond_rcu(upper, iter_netdev) {
524 if (!nfp_netdev_is_nfp_repr(iter_netdev)) {
525 can_offload = false;
526 break;
527 }
528 repr = netdev_priv(iter_netdev);
529
530 /* Ensure all ports are created by the same app/on same card. */
531 if (repr->app != priv->app) {
532 can_offload = false;
533 break;
534 }
535
536 slave_count++;
537 }
538 rcu_read_unlock();
539
540 lag_upper_info = info->upper_info;
541
542 /* Firmware supports active/backup and L3/L4 hash bonds. */
543 if (lag_upper_info &&
544 lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_ACTIVEBACKUP &&
545 (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH ||
546 (lag_upper_info->hash_type != NETDEV_LAG_HASH_L34 &&
547 lag_upper_info->hash_type != NETDEV_LAG_HASH_E34 &&
548 lag_upper_info->hash_type != NETDEV_LAG_HASH_UNKNOWN))) {
549 can_offload = false;
550 nfp_flower_cmsg_warn(priv->app,
551 "Unable to offload tx_type %u hash %u\n",
552 lag_upper_info->tx_type,
553 lag_upper_info->hash_type);
554 }
555
556 mutex_lock(&lag->lock);
557 group = nfp_fl_lag_find_group_for_master_with_lag(lag, upper);
558
559 if (slave_count == 0 || !can_offload) {
560 /* Cannot offload the group - remove if previously offloaded. */
561 if (group && group->offloaded)
562 nfp_fl_lag_schedule_group_remove(lag, group);
563
564 mutex_unlock(&lag->lock);
565 return 0;
566 }
567
568 if (!group) {
569 group = nfp_fl_lag_group_create(lag, upper);
570 if (IS_ERR(group)) {
571 mutex_unlock(&lag->lock);
572 return PTR_ERR(group);
573 }
574 }
575
576 group->dirty = true;
577 group->slave_cnt = slave_count;
578
579 /* Group may have been on queue for removal but is now offfloable. */
580 group->to_remove = false;
581 mutex_unlock(&lag->lock);
582
583 schedule_delayed_work(&lag->work, NFP_FL_LAG_DELAY);
584 return 0;
585 }
586
587 static void
nfp_fl_lag_changels_event(struct nfp_fl_lag * lag,struct net_device * netdev,struct netdev_notifier_changelowerstate_info * info)588 nfp_fl_lag_changels_event(struct nfp_fl_lag *lag, struct net_device *netdev,
589 struct netdev_notifier_changelowerstate_info *info)
590 {
591 struct netdev_lag_lower_state_info *lag_lower_info;
592 struct nfp_flower_repr_priv *repr_priv;
593 struct nfp_flower_priv *priv;
594 struct nfp_repr *repr;
595 unsigned long *flags;
596
597 if (!netif_is_lag_port(netdev) || !nfp_netdev_is_nfp_repr(netdev))
598 return;
599
600 lag_lower_info = info->lower_state_info;
601 if (!lag_lower_info)
602 return;
603
604 priv = container_of(lag, struct nfp_flower_priv, nfp_lag);
605 repr = netdev_priv(netdev);
606
607 /* Verify that the repr is associated with this app. */
608 if (repr->app != priv->app)
609 return;
610
611 repr_priv = repr->app_priv;
612 flags = &repr_priv->lag_port_flags;
613
614 mutex_lock(&lag->lock);
615 if (lag_lower_info->link_up)
616 *flags |= NFP_PORT_LAG_LINK_UP;
617 else
618 *flags &= ~NFP_PORT_LAG_LINK_UP;
619
620 if (lag_lower_info->tx_enabled)
621 *flags |= NFP_PORT_LAG_TX_ENABLED;
622 else
623 *flags &= ~NFP_PORT_LAG_TX_ENABLED;
624
625 *flags |= NFP_PORT_LAG_CHANGED;
626 mutex_unlock(&lag->lock);
627
628 schedule_delayed_work(&lag->work, NFP_FL_LAG_DELAY);
629 }
630
nfp_flower_lag_netdev_event(struct nfp_flower_priv * priv,struct net_device * netdev,unsigned long event,void * ptr)631 int nfp_flower_lag_netdev_event(struct nfp_flower_priv *priv,
632 struct net_device *netdev,
633 unsigned long event, void *ptr)
634 {
635 struct nfp_fl_lag *lag = &priv->nfp_lag;
636 int err;
637
638 switch (event) {
639 case NETDEV_CHANGEUPPER:
640 err = nfp_fl_lag_changeupper_event(lag, ptr);
641 if (err)
642 return NOTIFY_BAD;
643 return NOTIFY_OK;
644 case NETDEV_CHANGELOWERSTATE:
645 nfp_fl_lag_changels_event(lag, netdev, ptr);
646 return NOTIFY_OK;
647 case NETDEV_UNREGISTER:
648 nfp_fl_lag_schedule_group_delete(lag, netdev);
649 return NOTIFY_OK;
650 }
651
652 return NOTIFY_DONE;
653 }
654
nfp_flower_lag_reset(struct nfp_fl_lag * lag)655 int nfp_flower_lag_reset(struct nfp_fl_lag *lag)
656 {
657 enum nfp_fl_lag_batch batch = NFP_FL_LAG_BATCH_FIRST;
658
659 lag->rst_cfg = true;
660 return nfp_fl_lag_config_group(lag, NULL, NULL, 0, &batch);
661 }
662
nfp_flower_lag_init(struct nfp_fl_lag * lag)663 void nfp_flower_lag_init(struct nfp_fl_lag *lag)
664 {
665 INIT_DELAYED_WORK(&lag->work, nfp_fl_lag_do_work);
666 INIT_LIST_HEAD(&lag->group_list);
667 mutex_init(&lag->lock);
668 ida_init(&lag->ida_handle);
669
670 __skb_queue_head_init(&lag->retrans_skbs);
671
672 /* 0 is a reserved batch version so increment to first valid value. */
673 nfp_fl_increment_version(lag);
674 }
675
nfp_flower_lag_cleanup(struct nfp_fl_lag * lag)676 void nfp_flower_lag_cleanup(struct nfp_fl_lag *lag)
677 {
678 struct nfp_fl_lag_group *entry, *storage;
679
680 cancel_delayed_work_sync(&lag->work);
681
682 __skb_queue_purge(&lag->retrans_skbs);
683
684 /* Remove all groups. */
685 mutex_lock(&lag->lock);
686 list_for_each_entry_safe(entry, storage, &lag->group_list, list) {
687 list_del(&entry->list);
688 kfree(entry);
689 }
690 mutex_unlock(&lag->lock);
691 mutex_destroy(&lag->lock);
692 ida_destroy(&lag->ida_handle);
693 }
694
