]>
Commit | Line | Data |
---|---|---|
7907f23a AH |
1 | /* |
2 | * Copyright (c) 2016, 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 | #include <linux/netdevice.h> | |
34 | #include <linux/mlx5/driver.h> | |
35 | #include <linux/mlx5/vport.h> | |
36 | #include "mlx5_core.h" | |
37 | ||
38 | enum { | |
39 | MLX5_LAG_FLAG_BONDED = 1 << 0, | |
40 | }; | |
41 | ||
42 | struct lag_func { | |
43 | struct mlx5_core_dev *dev; | |
44 | struct net_device *netdev; | |
45 | }; | |
46 | ||
47 | /* Used for collection of netdev event info. */ | |
48 | struct lag_tracker { | |
49 | enum netdev_lag_tx_type tx_type; | |
50 | struct netdev_lag_lower_state_info netdev_state[MLX5_MAX_PORTS]; | |
51 | bool is_bonded; | |
52 | }; | |
53 | ||
54 | /* LAG data of a ConnectX card. | |
55 | * It serves both its phys functions. | |
56 | */ | |
57 | struct mlx5_lag { | |
58 | u8 flags; | |
59 | u8 v2p_map[MLX5_MAX_PORTS]; | |
60 | struct lag_func pf[MLX5_MAX_PORTS]; | |
61 | struct lag_tracker tracker; | |
62 | struct delayed_work bond_work; | |
63 | struct notifier_block nb; | |
552db7bc MS |
64 | |
65 | /* Admin state. Allow lag only if allowed is true | |
66 | * even if network conditions for lag were met | |
67 | */ | |
68 | bool allowed; | |
7907f23a AH |
69 | }; |
70 | ||
71 | /* General purpose, use for short periods of time. | |
72 | * Beware of lock dependencies (preferably, no locks should be acquired | |
73 | * under it). | |
74 | */ | |
75 | static DEFINE_MUTEX(lag_mutex); | |
76 | ||
77 | static int mlx5_cmd_create_lag(struct mlx5_core_dev *dev, u8 remap_port1, | |
78 | u8 remap_port2) | |
79 | { | |
80 | u32 in[MLX5_ST_SZ_DW(create_lag_in)] = {0}; | |
81 | u32 out[MLX5_ST_SZ_DW(create_lag_out)] = {0}; | |
82 | void *lag_ctx = MLX5_ADDR_OF(create_lag_in, in, ctx); | |
83 | ||
84 | MLX5_SET(create_lag_in, in, opcode, MLX5_CMD_OP_CREATE_LAG); | |
85 | ||
86 | MLX5_SET(lagc, lag_ctx, tx_remap_affinity_1, remap_port1); | |
87 | MLX5_SET(lagc, lag_ctx, tx_remap_affinity_2, remap_port2); | |
88 | ||
89 | return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); | |
90 | } | |
91 | ||
92 | static int mlx5_cmd_modify_lag(struct mlx5_core_dev *dev, u8 remap_port1, | |
93 | u8 remap_port2) | |
94 | { | |
95 | u32 in[MLX5_ST_SZ_DW(modify_lag_in)] = {0}; | |
96 | u32 out[MLX5_ST_SZ_DW(modify_lag_out)] = {0}; | |
97 | void *lag_ctx = MLX5_ADDR_OF(modify_lag_in, in, ctx); | |
98 | ||
99 | MLX5_SET(modify_lag_in, in, opcode, MLX5_CMD_OP_MODIFY_LAG); | |
100 | MLX5_SET(modify_lag_in, in, field_select, 0x1); | |
101 | ||
102 | MLX5_SET(lagc, lag_ctx, tx_remap_affinity_1, remap_port1); | |
103 | MLX5_SET(lagc, lag_ctx, tx_remap_affinity_2, remap_port2); | |
104 | ||
105 | return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); | |
106 | } | |
107 | ||
108 | static int mlx5_cmd_destroy_lag(struct mlx5_core_dev *dev) | |
109 | { | |
110 | u32 in[MLX5_ST_SZ_DW(destroy_lag_in)] = {0}; | |
111 | u32 out[MLX5_ST_SZ_DW(destroy_lag_out)] = {0}; | |
112 | ||
113 | MLX5_SET(destroy_lag_in, in, opcode, MLX5_CMD_OP_DESTROY_LAG); | |
114 | ||
115 | return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); | |
116 | } | |
117 | ||
3bc34f3b AH |
118 | int mlx5_cmd_create_vport_lag(struct mlx5_core_dev *dev) |
119 | { | |
120 | u32 in[MLX5_ST_SZ_DW(create_vport_lag_in)] = {0}; | |
121 | u32 out[MLX5_ST_SZ_DW(create_vport_lag_out)] = {0}; | |
122 | ||
123 | MLX5_SET(create_vport_lag_in, in, opcode, MLX5_CMD_OP_CREATE_VPORT_LAG); | |
124 | ||
125 | return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); | |
126 | } | |
127 | EXPORT_SYMBOL(mlx5_cmd_create_vport_lag); | |
128 | ||
129 | int mlx5_cmd_destroy_vport_lag(struct mlx5_core_dev *dev) | |
130 | { | |
131 | u32 in[MLX5_ST_SZ_DW(destroy_vport_lag_in)] = {0}; | |
132 | u32 out[MLX5_ST_SZ_DW(destroy_vport_lag_out)] = {0}; | |
133 | ||
134 | MLX5_SET(destroy_vport_lag_in, in, opcode, MLX5_CMD_OP_DESTROY_VPORT_LAG); | |
135 | ||
136 | return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); | |
137 | } | |
138 | EXPORT_SYMBOL(mlx5_cmd_destroy_vport_lag); | |
139 | ||
71a0ff65 MD |
140 | static int mlx5_cmd_query_cong_counter(struct mlx5_core_dev *dev, |
141 | bool reset, void *out, int out_size) | |
142 | { | |
143 | u32 in[MLX5_ST_SZ_DW(query_cong_statistics_in)] = { }; | |
144 | ||
145 | MLX5_SET(query_cong_statistics_in, in, opcode, | |
146 | MLX5_CMD_OP_QUERY_CONG_STATISTICS); | |
147 | MLX5_SET(query_cong_statistics_in, in, clear, reset); | |
148 | return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size); | |
149 | } | |
150 | ||
7907f23a AH |
151 | static struct mlx5_lag *mlx5_lag_dev_get(struct mlx5_core_dev *dev) |
152 | { | |
153 | return dev->priv.lag; | |
154 | } | |
155 | ||
156 | static int mlx5_lag_dev_get_netdev_idx(struct mlx5_lag *ldev, | |
157 | struct net_device *ndev) | |
158 | { | |
159 | int i; | |
160 | ||
161 | for (i = 0; i < MLX5_MAX_PORTS; i++) | |
162 | if (ldev->pf[i].netdev == ndev) | |
163 | return i; | |
164 | ||
165 | return -1; | |
166 | } | |
167 | ||
168 | static bool mlx5_lag_is_bonded(struct mlx5_lag *ldev) | |
169 | { | |
170 | return !!(ldev->flags & MLX5_LAG_FLAG_BONDED); | |
171 | } | |
172 | ||
173 | static void mlx5_infer_tx_affinity_mapping(struct lag_tracker *tracker, | |
174 | u8 *port1, u8 *port2) | |
175 | { | |
dc798b4c AH |
176 | *port1 = 1; |
177 | *port2 = 2; | |
178 | if (!tracker->netdev_state[0].tx_enabled || | |
179 | !tracker->netdev_state[0].link_up) { | |
180 | *port1 = 2; | |
181 | return; | |
7907f23a | 182 | } |
dc798b4c AH |
183 | |
184 | if (!tracker->netdev_state[1].tx_enabled || | |
185 | !tracker->netdev_state[1].link_up) | |
186 | *port2 = 1; | |
7907f23a AH |
187 | } |
188 | ||
189 | static void mlx5_activate_lag(struct mlx5_lag *ldev, | |
190 | struct lag_tracker *tracker) | |
191 | { | |
192 | struct mlx5_core_dev *dev0 = ldev->pf[0].dev; | |
193 | int err; | |
194 | ||
195 | ldev->flags |= MLX5_LAG_FLAG_BONDED; | |
196 | ||
197 | mlx5_infer_tx_affinity_mapping(tracker, &ldev->v2p_map[0], | |
198 | &ldev->v2p_map[1]); | |
199 | ||
200 | err = mlx5_cmd_create_lag(dev0, ldev->v2p_map[0], ldev->v2p_map[1]); | |
201 | if (err) | |
202 | mlx5_core_err(dev0, | |
203 | "Failed to create LAG (%d)\n", | |
204 | err); | |
205 | } | |
206 | ||
207 | static void mlx5_deactivate_lag(struct mlx5_lag *ldev) | |
208 | { | |
209 | struct mlx5_core_dev *dev0 = ldev->pf[0].dev; | |
210 | int err; | |
211 | ||
212 | ldev->flags &= ~MLX5_LAG_FLAG_BONDED; | |
213 | ||
214 | err = mlx5_cmd_destroy_lag(dev0); | |
215 | if (err) | |
216 | mlx5_core_err(dev0, | |
217 | "Failed to destroy LAG (%d)\n", | |
218 | err); | |
219 | } | |
220 | ||
221 | static void mlx5_do_bond(struct mlx5_lag *ldev) | |
222 | { | |
223 | struct mlx5_core_dev *dev0 = ldev->pf[0].dev; | |
224 | struct mlx5_core_dev *dev1 = ldev->pf[1].dev; | |
225 | struct lag_tracker tracker; | |
226 | u8 v2p_port1, v2p_port2; | |
227 | int i, err; | |
552db7bc | 228 | bool do_bond; |
7907f23a AH |
229 | |
230 | if (!dev0 || !dev1) | |
231 | return; | |
232 | ||
233 | mutex_lock(&lag_mutex); | |
234 | tracker = ldev->tracker; | |
235 | mutex_unlock(&lag_mutex); | |
236 | ||
552db7bc | 237 | do_bond = tracker.is_bonded && ldev->allowed; |
edb31b16 | 238 | |
552db7bc | 239 | if (do_bond && !mlx5_lag_is_bonded(ldev)) { |
7907f23a AH |
240 | for (i = 0; i < MLX5_MAX_PORTS; i++) |
241 | mlx5_remove_dev_by_protocol(ldev->pf[i].dev, | |
242 | MLX5_INTERFACE_PROTOCOL_IB); | |
243 | ||
244 | mlx5_activate_lag(ldev, &tracker); | |
245 | ||
246 | mlx5_add_dev_by_protocol(dev0, MLX5_INTERFACE_PROTOCOL_IB); | |
247 | mlx5_nic_vport_enable_roce(dev1); | |
552db7bc | 248 | } else if (do_bond && mlx5_lag_is_bonded(ldev)) { |
7907f23a AH |
249 | mlx5_infer_tx_affinity_mapping(&tracker, &v2p_port1, |
250 | &v2p_port2); | |
251 | ||
252 | if ((v2p_port1 != ldev->v2p_map[0]) || | |
253 | (v2p_port2 != ldev->v2p_map[1])) { | |
254 | ldev->v2p_map[0] = v2p_port1; | |
255 | ldev->v2p_map[1] = v2p_port2; | |
256 | ||
257 | err = mlx5_cmd_modify_lag(dev0, v2p_port1, v2p_port2); | |
258 | if (err) | |
259 | mlx5_core_err(dev0, | |
260 | "Failed to modify LAG (%d)\n", | |
261 | err); | |
262 | } | |
552db7bc | 263 | } else if (!do_bond && mlx5_lag_is_bonded(ldev)) { |
7907f23a AH |
264 | mlx5_remove_dev_by_protocol(dev0, MLX5_INTERFACE_PROTOCOL_IB); |
265 | mlx5_nic_vport_disable_roce(dev1); | |
266 | ||
267 | mlx5_deactivate_lag(ldev); | |
268 | ||
269 | for (i = 0; i < MLX5_MAX_PORTS; i++) | |
270 | if (ldev->pf[i].dev) | |
271 | mlx5_add_dev_by_protocol(ldev->pf[i].dev, | |
272 | MLX5_INTERFACE_PROTOCOL_IB); | |
273 | } | |
274 | } | |
275 | ||
276 | static void mlx5_queue_bond_work(struct mlx5_lag *ldev, unsigned long delay) | |
277 | { | |
278 | schedule_delayed_work(&ldev->bond_work, delay); | |
279 | } | |
280 | ||
281 | static void mlx5_do_bond_work(struct work_struct *work) | |
282 | { | |
283 | struct delayed_work *delayed_work = to_delayed_work(work); | |
284 | struct mlx5_lag *ldev = container_of(delayed_work, struct mlx5_lag, | |
285 | bond_work); | |
286 | int status; | |
287 | ||
f1ee87fe | 288 | status = mlx5_dev_list_trylock(); |
7907f23a AH |
289 | if (!status) { |
290 | /* 1 sec delay. */ | |
291 | mlx5_queue_bond_work(ldev, HZ); | |
292 | return; | |
293 | } | |
294 | ||
295 | mlx5_do_bond(ldev); | |
f1ee87fe | 296 | mlx5_dev_list_unlock(); |
7907f23a AH |
297 | } |
298 | ||
299 | static int mlx5_handle_changeupper_event(struct mlx5_lag *ldev, | |
300 | struct lag_tracker *tracker, | |
301 | struct net_device *ndev, | |
302 | struct netdev_notifier_changeupper_info *info) | |
303 | { | |
304 | struct net_device *upper = info->upper_dev, *ndev_tmp; | |
e497ec68 | 305 | struct netdev_lag_upper_info *lag_upper_info = NULL; |
7907f23a AH |
306 | bool is_bonded; |
307 | int bond_status = 0; | |
308 | int num_slaves = 0; | |
309 | int idx; | |
310 | ||
311 | if (!netif_is_lag_master(upper)) | |
312 | return 0; | |
313 | ||
e497ec68 TB |
314 | if (info->linking) |
315 | lag_upper_info = info->upper_info; | |
7907f23a AH |
316 | |
317 | /* The event may still be of interest if the slave does not belong to | |
318 | * us, but is enslaved to a master which has one or more of our netdevs | |
319 | * as slaves (e.g., if a new slave is added to a master that bonds two | |
320 | * of our netdevs, we should unbond). | |
321 | */ | |
322 | rcu_read_lock(); | |
323 | for_each_netdev_in_bond_rcu(upper, ndev_tmp) { | |
324 | idx = mlx5_lag_dev_get_netdev_idx(ldev, ndev_tmp); | |
325 | if (idx > -1) | |
326 | bond_status |= (1 << idx); | |
327 | ||
328 | num_slaves++; | |
329 | } | |
330 | rcu_read_unlock(); | |
331 | ||
332 | /* None of this lagdev's netdevs are slaves of this master. */ | |
333 | if (!(bond_status & 0x3)) | |
334 | return 0; | |
335 | ||
336 | if (lag_upper_info) | |
337 | tracker->tx_type = lag_upper_info->tx_type; | |
338 | ||
339 | /* Determine bonding status: | |
340 | * A device is considered bonded if both its physical ports are slaves | |
341 | * of the same lag master, and only them. | |
342 | * Lag mode must be activebackup or hash. | |
343 | */ | |
344 | is_bonded = (num_slaves == MLX5_MAX_PORTS) && | |
345 | (bond_status == 0x3) && | |
346 | ((tracker->tx_type == NETDEV_LAG_TX_TYPE_ACTIVEBACKUP) || | |
347 | (tracker->tx_type == NETDEV_LAG_TX_TYPE_HASH)); | |
348 | ||
349 | if (tracker->is_bonded != is_bonded) { | |
350 | tracker->is_bonded = is_bonded; | |
351 | return 1; | |
352 | } | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
357 | static int mlx5_handle_changelowerstate_event(struct mlx5_lag *ldev, | |
358 | struct lag_tracker *tracker, | |
359 | struct net_device *ndev, | |
360 | struct netdev_notifier_changelowerstate_info *info) | |
361 | { | |
362 | struct netdev_lag_lower_state_info *lag_lower_info; | |
363 | int idx; | |
364 | ||
365 | if (!netif_is_lag_port(ndev)) | |
366 | return 0; | |
367 | ||
368 | idx = mlx5_lag_dev_get_netdev_idx(ldev, ndev); | |
369 | if (idx == -1) | |
370 | return 0; | |
371 | ||
372 | /* This information is used to determine virtual to physical | |
373 | * port mapping. | |
374 | */ | |
375 | lag_lower_info = info->lower_state_info; | |
376 | if (!lag_lower_info) | |
377 | return 0; | |
378 | ||
379 | tracker->netdev_state[idx] = *lag_lower_info; | |
380 | ||
381 | return 1; | |
382 | } | |
383 | ||
384 | static int mlx5_lag_netdev_event(struct notifier_block *this, | |
385 | unsigned long event, void *ptr) | |
386 | { | |
387 | struct net_device *ndev = netdev_notifier_info_to_dev(ptr); | |
388 | struct lag_tracker tracker; | |
389 | struct mlx5_lag *ldev; | |
390 | int changed = 0; | |
391 | ||
392 | if (!net_eq(dev_net(ndev), &init_net)) | |
393 | return NOTIFY_DONE; | |
394 | ||
395 | if ((event != NETDEV_CHANGEUPPER) && (event != NETDEV_CHANGELOWERSTATE)) | |
396 | return NOTIFY_DONE; | |
397 | ||
398 | ldev = container_of(this, struct mlx5_lag, nb); | |
399 | tracker = ldev->tracker; | |
400 | ||
401 | switch (event) { | |
402 | case NETDEV_CHANGEUPPER: | |
403 | changed = mlx5_handle_changeupper_event(ldev, &tracker, ndev, | |
404 | ptr); | |
405 | break; | |
406 | case NETDEV_CHANGELOWERSTATE: | |
407 | changed = mlx5_handle_changelowerstate_event(ldev, &tracker, | |
408 | ndev, ptr); | |
409 | break; | |
410 | } | |
411 | ||
412 | mutex_lock(&lag_mutex); | |
413 | ldev->tracker = tracker; | |
414 | mutex_unlock(&lag_mutex); | |
415 | ||
416 | if (changed) | |
417 | mlx5_queue_bond_work(ldev, 0); | |
418 | ||
419 | return NOTIFY_DONE; | |
420 | } | |
421 | ||
552db7bc MS |
422 | static bool mlx5_lag_check_prereq(struct mlx5_lag *ldev) |
423 | { | |
424 | if ((ldev->pf[0].dev && mlx5_sriov_is_enabled(ldev->pf[0].dev)) || | |
425 | (ldev->pf[1].dev && mlx5_sriov_is_enabled(ldev->pf[1].dev))) | |
426 | return false; | |
427 | else | |
428 | return true; | |
429 | } | |
430 | ||
7907f23a AH |
431 | static struct mlx5_lag *mlx5_lag_dev_alloc(void) |
432 | { | |
433 | struct mlx5_lag *ldev; | |
434 | ||
435 | ldev = kzalloc(sizeof(*ldev), GFP_KERNEL); | |
436 | if (!ldev) | |
437 | return NULL; | |
438 | ||
439 | INIT_DELAYED_WORK(&ldev->bond_work, mlx5_do_bond_work); | |
552db7bc | 440 | ldev->allowed = mlx5_lag_check_prereq(ldev); |
7907f23a AH |
441 | |
442 | return ldev; | |
443 | } | |
444 | ||
445 | static void mlx5_lag_dev_free(struct mlx5_lag *ldev) | |
446 | { | |
447 | kfree(ldev); | |
448 | } | |
449 | ||
450 | static void mlx5_lag_dev_add_pf(struct mlx5_lag *ldev, | |
451 | struct mlx5_core_dev *dev, | |
452 | struct net_device *netdev) | |
453 | { | |
454 | unsigned int fn = PCI_FUNC(dev->pdev->devfn); | |
455 | ||
456 | if (fn >= MLX5_MAX_PORTS) | |
457 | return; | |
458 | ||
459 | mutex_lock(&lag_mutex); | |
460 | ldev->pf[fn].dev = dev; | |
461 | ldev->pf[fn].netdev = netdev; | |
462 | ldev->tracker.netdev_state[fn].link_up = 0; | |
463 | ldev->tracker.netdev_state[fn].tx_enabled = 0; | |
464 | ||
552db7bc | 465 | ldev->allowed = mlx5_lag_check_prereq(ldev); |
7907f23a | 466 | dev->priv.lag = ldev; |
552db7bc | 467 | |
7907f23a AH |
468 | mutex_unlock(&lag_mutex); |
469 | } | |
470 | ||
471 | static void mlx5_lag_dev_remove_pf(struct mlx5_lag *ldev, | |
472 | struct mlx5_core_dev *dev) | |
473 | { | |
474 | int i; | |
475 | ||
476 | for (i = 0; i < MLX5_MAX_PORTS; i++) | |
477 | if (ldev->pf[i].dev == dev) | |
478 | break; | |
479 | ||
480 | if (i == MLX5_MAX_PORTS) | |
481 | return; | |
482 | ||
483 | mutex_lock(&lag_mutex); | |
484 | memset(&ldev->pf[i], 0, sizeof(*ldev->pf)); | |
485 | ||
486 | dev->priv.lag = NULL; | |
552db7bc | 487 | ldev->allowed = mlx5_lag_check_prereq(ldev); |
7907f23a AH |
488 | mutex_unlock(&lag_mutex); |
489 | } | |
490 | ||
7907f23a AH |
491 | /* Must be called with intf_mutex held */ |
492 | void mlx5_lag_add(struct mlx5_core_dev *dev, struct net_device *netdev) | |
493 | { | |
494 | struct mlx5_lag *ldev = NULL; | |
495 | struct mlx5_core_dev *tmp_dev; | |
7907f23a AH |
496 | |
497 | if (!MLX5_CAP_GEN(dev, vport_group_manager) || | |
498 | !MLX5_CAP_GEN(dev, lag_master) || | |
499 | (MLX5_CAP_GEN(dev, num_lag_ports) != MLX5_MAX_PORTS)) | |
500 | return; | |
501 | ||
f1ee87fe MHY |
502 | tmp_dev = mlx5_get_next_phys_dev(dev); |
503 | if (tmp_dev) | |
504 | ldev = tmp_dev->priv.lag; | |
7907f23a AH |
505 | |
506 | if (!ldev) { | |
507 | ldev = mlx5_lag_dev_alloc(); | |
508 | if (!ldev) { | |
509 | mlx5_core_err(dev, "Failed to alloc lag dev\n"); | |
510 | return; | |
511 | } | |
512 | } | |
513 | ||
514 | mlx5_lag_dev_add_pf(ldev, dev, netdev); | |
515 | ||
516 | if (!ldev->nb.notifier_call) { | |
517 | ldev->nb.notifier_call = mlx5_lag_netdev_event; | |
518 | if (register_netdevice_notifier(&ldev->nb)) { | |
519 | ldev->nb.notifier_call = NULL; | |
520 | mlx5_core_err(dev, "Failed to register LAG netdev notifier\n"); | |
521 | } | |
522 | } | |
523 | } | |
524 | ||
525 | /* Must be called with intf_mutex held */ | |
526 | void mlx5_lag_remove(struct mlx5_core_dev *dev) | |
527 | { | |
528 | struct mlx5_lag *ldev; | |
529 | int i; | |
530 | ||
531 | ldev = mlx5_lag_dev_get(dev); | |
532 | if (!ldev) | |
533 | return; | |
534 | ||
535 | if (mlx5_lag_is_bonded(ldev)) | |
536 | mlx5_deactivate_lag(ldev); | |
537 | ||
538 | mlx5_lag_dev_remove_pf(ldev, dev); | |
539 | ||
540 | for (i = 0; i < MLX5_MAX_PORTS; i++) | |
541 | if (ldev->pf[i].dev) | |
542 | break; | |
543 | ||
544 | if (i == MLX5_MAX_PORTS) { | |
545 | if (ldev->nb.notifier_call) | |
546 | unregister_netdevice_notifier(&ldev->nb); | |
547 | cancel_delayed_work_sync(&ldev->bond_work); | |
548 | mlx5_lag_dev_free(ldev); | |
549 | } | |
550 | } | |
551 | ||
552 | bool mlx5_lag_is_active(struct mlx5_core_dev *dev) | |
553 | { | |
554 | struct mlx5_lag *ldev; | |
555 | bool res; | |
556 | ||
557 | mutex_lock(&lag_mutex); | |
558 | ldev = mlx5_lag_dev_get(dev); | |
559 | res = ldev && mlx5_lag_is_bonded(ldev); | |
560 | mutex_unlock(&lag_mutex); | |
561 | ||
562 | return res; | |
563 | } | |
564 | EXPORT_SYMBOL(mlx5_lag_is_active); | |
565 | ||
552db7bc MS |
566 | static int mlx5_lag_set_state(struct mlx5_core_dev *dev, bool allow) |
567 | { | |
568 | struct mlx5_lag *ldev; | |
569 | int ret = 0; | |
570 | bool lag_active; | |
571 | ||
572 | mlx5_dev_list_lock(); | |
573 | ||
574 | ldev = mlx5_lag_dev_get(dev); | |
575 | if (!ldev) { | |
576 | ret = -ENODEV; | |
577 | goto unlock; | |
578 | } | |
579 | lag_active = mlx5_lag_is_bonded(ldev); | |
580 | if (!mlx5_lag_check_prereq(ldev) && allow) { | |
581 | ret = -EINVAL; | |
582 | goto unlock; | |
583 | } | |
584 | if (ldev->allowed == allow) | |
585 | goto unlock; | |
586 | ldev->allowed = allow; | |
587 | if ((lag_active && !allow) || allow) | |
588 | mlx5_do_bond(ldev); | |
589 | unlock: | |
590 | mlx5_dev_list_unlock(); | |
591 | return ret; | |
592 | } | |
593 | ||
594 | int mlx5_lag_forbid(struct mlx5_core_dev *dev) | |
595 | { | |
596 | return mlx5_lag_set_state(dev, false); | |
597 | } | |
598 | ||
599 | int mlx5_lag_allow(struct mlx5_core_dev *dev) | |
600 | { | |
601 | return mlx5_lag_set_state(dev, true); | |
602 | } | |
603 | ||
6a32047a AH |
604 | struct net_device *mlx5_lag_get_roce_netdev(struct mlx5_core_dev *dev) |
605 | { | |
606 | struct net_device *ndev = NULL; | |
607 | struct mlx5_lag *ldev; | |
608 | ||
609 | mutex_lock(&lag_mutex); | |
610 | ldev = mlx5_lag_dev_get(dev); | |
611 | ||
612 | if (!(ldev && mlx5_lag_is_bonded(ldev))) | |
613 | goto unlock; | |
614 | ||
615 | if (ldev->tracker.tx_type == NETDEV_LAG_TX_TYPE_ACTIVEBACKUP) { | |
616 | ndev = ldev->tracker.netdev_state[0].tx_enabled ? | |
617 | ldev->pf[0].netdev : ldev->pf[1].netdev; | |
618 | } else { | |
619 | ndev = ldev->pf[0].netdev; | |
620 | } | |
621 | if (ndev) | |
622 | dev_hold(ndev); | |
623 | ||
624 | unlock: | |
625 | mutex_unlock(&lag_mutex); | |
626 | ||
627 | return ndev; | |
628 | } | |
629 | EXPORT_SYMBOL(mlx5_lag_get_roce_netdev); | |
630 | ||
917b41aa AH |
631 | bool mlx5_lag_intf_add(struct mlx5_interface *intf, struct mlx5_priv *priv) |
632 | { | |
633 | struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, | |
634 | priv); | |
635 | struct mlx5_lag *ldev; | |
636 | ||
637 | if (intf->protocol != MLX5_INTERFACE_PROTOCOL_IB) | |
638 | return true; | |
639 | ||
640 | ldev = mlx5_lag_dev_get(dev); | |
641 | if (!ldev || !mlx5_lag_is_bonded(ldev) || ldev->pf[0].dev == dev) | |
642 | return true; | |
643 | ||
644 | /* If bonded, we do not add an IB device for PF1. */ | |
645 | return false; | |
646 | } | |
71a0ff65 MD |
647 | |
648 | int mlx5_lag_query_cong_counters(struct mlx5_core_dev *dev, | |
649 | u64 *values, | |
650 | int num_counters, | |
651 | size_t *offsets) | |
652 | { | |
653 | int outlen = MLX5_ST_SZ_BYTES(query_cong_statistics_out); | |
654 | struct mlx5_core_dev *mdev[MLX5_MAX_PORTS]; | |
655 | struct mlx5_lag *ldev; | |
656 | int num_ports; | |
657 | int ret, i, j; | |
658 | void *out; | |
659 | ||
660 | out = kvzalloc(outlen, GFP_KERNEL); | |
661 | if (!out) | |
662 | return -ENOMEM; | |
663 | ||
664 | memset(values, 0, sizeof(*values) * num_counters); | |
665 | ||
666 | mutex_lock(&lag_mutex); | |
667 | ldev = mlx5_lag_dev_get(dev); | |
668 | if (ldev && mlx5_lag_is_bonded(ldev)) { | |
669 | num_ports = MLX5_MAX_PORTS; | |
670 | mdev[0] = ldev->pf[0].dev; | |
671 | mdev[1] = ldev->pf[1].dev; | |
672 | } else { | |
673 | num_ports = 1; | |
674 | mdev[0] = dev; | |
675 | } | |
676 | ||
677 | for (i = 0; i < num_ports; ++i) { | |
678 | ret = mlx5_cmd_query_cong_counter(mdev[i], false, out, outlen); | |
679 | if (ret) | |
680 | goto unlock; | |
681 | ||
682 | for (j = 0; j < num_counters; ++j) | |
683 | values[j] += be64_to_cpup((__be64 *)(out + offsets[j])); | |
684 | } | |
685 | ||
686 | unlock: | |
687 | mutex_unlock(&lag_mutex); | |
688 | kvfree(out); | |
689 | return ret; | |
690 | } | |
691 | EXPORT_SYMBOL(mlx5_lag_query_cong_counters); |