]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. | |
2a1d9b7f RD |
3 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
4 | * Copyright (c) 2004 Voltaire, Inc. All rights reserved. | |
1da177e4 LT |
5 | * |
6 | * This software is available to you under a choice of one of two | |
7 | * licenses. You may choose to be licensed under the terms of the GNU | |
8 | * General Public License (GPL) Version 2, available from the file | |
9 | * COPYING in the main directory of this source tree, or the | |
10 | * OpenIB.org BSD license below: | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or | |
13 | * without modification, are permitted provided that the following | |
14 | * conditions are met: | |
15 | * | |
16 | * - Redistributions of source code must retain the above | |
17 | * copyright notice, this list of conditions and the following | |
18 | * disclaimer. | |
19 | * | |
20 | * - Redistributions in binary form must reproduce the above | |
21 | * copyright notice, this list of conditions and the following | |
22 | * disclaimer in the documentation and/or other materials | |
23 | * provided with the distribution. | |
24 | * | |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
32 | * SOFTWARE. | |
1da177e4 LT |
33 | */ |
34 | ||
35 | #include "ipoib.h" | |
36 | ||
1da177e4 LT |
37 | #include <linux/module.h> |
38 | ||
39 | #include <linux/init.h> | |
40 | #include <linux/slab.h> | |
0f485251 | 41 | #include <linux/kernel.h> |
10313cbb | 42 | #include <linux/vmalloc.h> |
1da177e4 LT |
43 | |
44 | #include <linux/if_arp.h> /* For ARPHRD_xxx */ | |
45 | ||
46 | #include <linux/ip.h> | |
47 | #include <linux/in.h> | |
48 | ||
b63b70d8 SP |
49 | #include <linux/jhash.h> |
50 | #include <net/arp.h> | |
ddde896e GS |
51 | #include <net/addrconf.h> |
52 | #include <linux/inetdevice.h> | |
53 | #include <rdma/ib_cache.h> | |
9c3c5f8e | 54 | #include <linux/pci.h> |
14c85021 | 55 | |
4b48680b YB |
56 | #define DRV_VERSION "1.0.0" |
57 | ||
58 | const char ipoib_driver_version[] = DRV_VERSION; | |
59 | ||
1da177e4 LT |
60 | MODULE_AUTHOR("Roland Dreier"); |
61 | MODULE_DESCRIPTION("IP-over-InfiniBand net driver"); | |
62 | MODULE_LICENSE("Dual BSD/GPL"); | |
4b48680b | 63 | MODULE_VERSION(DRV_VERSION); |
1da177e4 | 64 | |
0f485251 SM |
65 | int ipoib_sendq_size __read_mostly = IPOIB_TX_RING_SIZE; |
66 | int ipoib_recvq_size __read_mostly = IPOIB_RX_RING_SIZE; | |
67 | ||
68 | module_param_named(send_queue_size, ipoib_sendq_size, int, 0444); | |
69 | MODULE_PARM_DESC(send_queue_size, "Number of descriptors in send queue"); | |
70 | module_param_named(recv_queue_size, ipoib_recvq_size, int, 0444); | |
71 | MODULE_PARM_DESC(recv_queue_size, "Number of descriptors in receive queue"); | |
72 | ||
1da177e4 LT |
73 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
74 | int ipoib_debug_level; | |
75 | ||
76 | module_param_named(debug_level, ipoib_debug_level, int, 0644); | |
77 | MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0"); | |
78 | #endif | |
79 | ||
1732b0ef RD |
80 | struct ipoib_path_iter { |
81 | struct net_device *dev; | |
82 | struct ipoib_path path; | |
83 | }; | |
84 | ||
1da177e4 LT |
85 | static const u8 ipv4_bcast_addr[] = { |
86 | 0x00, 0xff, 0xff, 0xff, | |
87 | 0xff, 0x12, 0x40, 0x1b, 0x00, 0x00, 0x00, 0x00, | |
88 | 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff | |
89 | }; | |
90 | ||
91 | struct workqueue_struct *ipoib_workqueue; | |
92 | ||
c1a0b23b MT |
93 | struct ib_sa_client ipoib_sa_client; |
94 | ||
1da177e4 | 95 | static void ipoib_add_one(struct ib_device *device); |
7c1eb45a | 96 | static void ipoib_remove_one(struct ib_device *device, void *client_data); |
b63b70d8 | 97 | static void ipoib_neigh_reclaim(struct rcu_head *rp); |
ddde896e GS |
98 | static struct net_device *ipoib_get_net_dev_by_params( |
99 | struct ib_device *dev, u8 port, u16 pkey, | |
100 | const union ib_gid *gid, const struct sockaddr *addr, | |
101 | void *client_data); | |
492a7e67 | 102 | static int ipoib_set_mac(struct net_device *dev, void *addr); |
1da177e4 LT |
103 | |
104 | static struct ib_client ipoib_client = { | |
105 | .name = "ipoib", | |
106 | .add = ipoib_add_one, | |
ddde896e GS |
107 | .remove = ipoib_remove_one, |
108 | .get_net_dev_by_params = ipoib_get_net_dev_by_params, | |
1da177e4 LT |
109 | }; |
110 | ||
771a5258 SR |
111 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
112 | static int ipoib_netdev_event(struct notifier_block *this, | |
113 | unsigned long event, void *ptr) | |
114 | { | |
115 | struct netdev_notifier_info *ni = ptr; | |
116 | struct net_device *dev = ni->dev; | |
117 | ||
118 | if (dev->netdev_ops->ndo_open != ipoib_open) | |
119 | return NOTIFY_DONE; | |
120 | ||
121 | switch (event) { | |
122 | case NETDEV_REGISTER: | |
123 | ipoib_create_debug_files(dev); | |
124 | break; | |
125 | case NETDEV_CHANGENAME: | |
126 | ipoib_delete_debug_files(dev); | |
127 | ipoib_create_debug_files(dev); | |
128 | break; | |
129 | case NETDEV_UNREGISTER: | |
130 | ipoib_delete_debug_files(dev); | |
131 | break; | |
132 | } | |
133 | ||
134 | return NOTIFY_DONE; | |
135 | } | |
136 | #endif | |
137 | ||
1da177e4 LT |
138 | int ipoib_open(struct net_device *dev) |
139 | { | |
c1048aff | 140 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 LT |
141 | |
142 | ipoib_dbg(priv, "bringing up interface\n"); | |
143 | ||
437708c4 MS |
144 | netif_carrier_off(dev); |
145 | ||
e028cc55 | 146 | set_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags); |
1da177e4 | 147 | |
3b561130 ES |
148 | priv->sm_fullmember_sendonly_support = false; |
149 | ||
efc82eee | 150 | if (ipoib_ib_dev_open(dev)) { |
dd57c930 AE |
151 | if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) |
152 | return 0; | |
b8a1b1ce | 153 | goto err_disable; |
dd57c930 | 154 | } |
fe25c561 | 155 | |
5c37077f | 156 | ipoib_ib_dev_up(dev); |
1da177e4 LT |
157 | |
158 | if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) { | |
159 | struct ipoib_dev_priv *cpriv; | |
160 | ||
161 | /* Bring up any child interfaces too */ | |
f47944cc | 162 | down_read(&priv->vlan_rwsem); |
1da177e4 LT |
163 | list_for_each_entry(cpriv, &priv->child_intfs, list) { |
164 | int flags; | |
165 | ||
166 | flags = cpriv->dev->flags; | |
167 | if (flags & IFF_UP) | |
168 | continue; | |
169 | ||
170 | dev_change_flags(cpriv->dev, flags | IFF_UP); | |
171 | } | |
f47944cc | 172 | up_read(&priv->vlan_rwsem); |
1da177e4 LT |
173 | } |
174 | ||
175 | netif_start_queue(dev); | |
176 | ||
177 | return 0; | |
b8a1b1ce | 178 | |
b8a1b1ce | 179 | err_disable: |
b8a1b1ce RD |
180 | clear_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags); |
181 | ||
182 | return -EINVAL; | |
1da177e4 LT |
183 | } |
184 | ||
185 | static int ipoib_stop(struct net_device *dev) | |
186 | { | |
c1048aff | 187 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 LT |
188 | |
189 | ipoib_dbg(priv, "stopping interface\n"); | |
190 | ||
191 | clear_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags); | |
192 | ||
193 | netif_stop_queue(dev); | |
194 | ||
efc82eee | 195 | ipoib_ib_dev_down(dev); |
cd565b4b | 196 | ipoib_ib_dev_stop(dev); |
1da177e4 LT |
197 | |
198 | if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) { | |
199 | struct ipoib_dev_priv *cpriv; | |
200 | ||
201 | /* Bring down any child interfaces too */ | |
f47944cc | 202 | down_read(&priv->vlan_rwsem); |
1da177e4 LT |
203 | list_for_each_entry(cpriv, &priv->child_intfs, list) { |
204 | int flags; | |
205 | ||
206 | flags = cpriv->dev->flags; | |
207 | if (!(flags & IFF_UP)) | |
208 | continue; | |
209 | ||
210 | dev_change_flags(cpriv->dev, flags & ~IFF_UP); | |
211 | } | |
f47944cc | 212 | up_read(&priv->vlan_rwsem); |
1da177e4 LT |
213 | } |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
9baa0b03 OG |
218 | static void ipoib_uninit(struct net_device *dev) |
219 | { | |
220 | ipoib_dev_cleanup(dev); | |
221 | } | |
222 | ||
9ca36f7d | 223 | static netdev_features_t ipoib_fix_features(struct net_device *dev, netdev_features_t features) |
3d96c74d | 224 | { |
c1048aff | 225 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
3d96c74d MM |
226 | |
227 | if (test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags)) | |
c4268778 | 228 | features &= ~(NETIF_F_IP_CSUM | NETIF_F_TSO); |
3d96c74d MM |
229 | |
230 | return features; | |
231 | } | |
232 | ||
1da177e4 LT |
233 | static int ipoib_change_mtu(struct net_device *dev, int new_mtu) |
234 | { | |
c1048aff | 235 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 | 236 | |
839fcaba | 237 | /* dev->mtu > 2K ==> connected mode */ |
586a6934 PS |
238 | if (ipoib_cm_admin_enabled(dev)) { |
239 | if (new_mtu > ipoib_cm_max_mtu(dev)) | |
240 | return -EINVAL; | |
241 | ||
839fcaba MT |
242 | if (new_mtu > priv->mcast_mtu) |
243 | ipoib_warn(priv, "mtu > %d will cause multicast packet drops.\n", | |
244 | priv->mcast_mtu); | |
586a6934 | 245 | |
839fcaba MT |
246 | dev->mtu = new_mtu; |
247 | return 0; | |
248 | } | |
249 | ||
bc7b3a36 | 250 | if (new_mtu > IPOIB_UD_MTU(priv->max_ib_mtu)) |
1da177e4 LT |
251 | return -EINVAL; |
252 | ||
253 | priv->admin_mtu = new_mtu; | |
254 | ||
29da686d FD |
255 | if (priv->mcast_mtu < priv->admin_mtu) |
256 | ipoib_dbg(priv, "MTU must be smaller than the underlying " | |
257 | "link layer MTU - 4 (%u)\n", priv->mcast_mtu); | |
258 | ||
1da177e4 LT |
259 | dev->mtu = min(priv->mcast_mtu, priv->admin_mtu); |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
ddde896e GS |
264 | /* Called with an RCU read lock taken */ |
265 | static bool ipoib_is_dev_match_addr_rcu(const struct sockaddr *addr, | |
266 | struct net_device *dev) | |
267 | { | |
268 | struct net *net = dev_net(dev); | |
269 | struct in_device *in_dev; | |
270 | struct sockaddr_in *addr_in = (struct sockaddr_in *)addr; | |
271 | struct sockaddr_in6 *addr_in6 = (struct sockaddr_in6 *)addr; | |
272 | __be32 ret_addr; | |
273 | ||
274 | switch (addr->sa_family) { | |
275 | case AF_INET: | |
276 | in_dev = in_dev_get(dev); | |
277 | if (!in_dev) | |
278 | return false; | |
279 | ||
280 | ret_addr = inet_confirm_addr(net, in_dev, 0, | |
281 | addr_in->sin_addr.s_addr, | |
282 | RT_SCOPE_HOST); | |
283 | in_dev_put(in_dev); | |
284 | if (ret_addr) | |
285 | return true; | |
286 | ||
287 | break; | |
288 | case AF_INET6: | |
289 | if (IS_ENABLED(CONFIG_IPV6) && | |
290 | ipv6_chk_addr(net, &addr_in6->sin6_addr, dev, 1)) | |
291 | return true; | |
292 | ||
293 | break; | |
294 | } | |
295 | return false; | |
296 | } | |
297 | ||
298 | /** | |
299 | * Find the master net_device on top of the given net_device. | |
300 | * @dev: base IPoIB net_device | |
301 | * | |
302 | * Returns the master net_device with a reference held, or the same net_device | |
303 | * if no master exists. | |
304 | */ | |
305 | static struct net_device *ipoib_get_master_net_dev(struct net_device *dev) | |
306 | { | |
307 | struct net_device *master; | |
308 | ||
309 | rcu_read_lock(); | |
310 | master = netdev_master_upper_dev_get_rcu(dev); | |
311 | if (master) | |
312 | dev_hold(master); | |
313 | rcu_read_unlock(); | |
314 | ||
315 | if (master) | |
316 | return master; | |
317 | ||
318 | dev_hold(dev); | |
319 | return dev; | |
320 | } | |
321 | ||
e0e79c8e DA |
322 | struct ipoib_walk_data { |
323 | const struct sockaddr *addr; | |
324 | struct net_device *result; | |
325 | }; | |
326 | ||
327 | static int ipoib_upper_walk(struct net_device *upper, void *_data) | |
328 | { | |
329 | struct ipoib_walk_data *data = _data; | |
330 | int ret = 0; | |
331 | ||
332 | if (ipoib_is_dev_match_addr_rcu(data->addr, upper)) { | |
333 | dev_hold(upper); | |
334 | data->result = upper; | |
335 | ret = 1; | |
336 | } | |
337 | ||
338 | return ret; | |
339 | } | |
340 | ||
ddde896e GS |
341 | /** |
342 | * Find a net_device matching the given address, which is an upper device of | |
343 | * the given net_device. | |
344 | * @addr: IP address to look for. | |
345 | * @dev: base IPoIB net_device | |
346 | * | |
347 | * If found, returns the net_device with a reference held. Otherwise return | |
348 | * NULL. | |
349 | */ | |
350 | static struct net_device *ipoib_get_net_dev_match_addr( | |
351 | const struct sockaddr *addr, struct net_device *dev) | |
352 | { | |
e0e79c8e DA |
353 | struct ipoib_walk_data data = { |
354 | .addr = addr, | |
355 | }; | |
ddde896e GS |
356 | |
357 | rcu_read_lock(); | |
358 | if (ipoib_is_dev_match_addr_rcu(addr, dev)) { | |
359 | dev_hold(dev); | |
e0e79c8e | 360 | data.result = dev; |
ddde896e GS |
361 | goto out; |
362 | } | |
363 | ||
e0e79c8e | 364 | netdev_walk_all_upper_dev_rcu(dev, ipoib_upper_walk, &data); |
ddde896e GS |
365 | out: |
366 | rcu_read_unlock(); | |
e0e79c8e | 367 | return data.result; |
ddde896e GS |
368 | } |
369 | ||
370 | /* returns the number of IPoIB netdevs on top a given ipoib device matching a | |
371 | * pkey_index and address, if one exists. | |
372 | * | |
373 | * @found_net_dev: contains a matching net_device if the return value >= 1, | |
374 | * with a reference held. */ | |
375 | static int ipoib_match_gid_pkey_addr(struct ipoib_dev_priv *priv, | |
376 | const union ib_gid *gid, | |
377 | u16 pkey_index, | |
378 | const struct sockaddr *addr, | |
379 | int nesting, | |
380 | struct net_device **found_net_dev) | |
381 | { | |
382 | struct ipoib_dev_priv *child_priv; | |
383 | struct net_device *net_dev = NULL; | |
384 | int matches = 0; | |
385 | ||
386 | if (priv->pkey_index == pkey_index && | |
387 | (!gid || !memcmp(gid, &priv->local_gid, sizeof(*gid)))) { | |
388 | if (!addr) { | |
389 | net_dev = ipoib_get_master_net_dev(priv->dev); | |
390 | } else { | |
391 | /* Verify the net_device matches the IP address, as | |
392 | * IPoIB child devices currently share a GID. */ | |
393 | net_dev = ipoib_get_net_dev_match_addr(addr, priv->dev); | |
394 | } | |
395 | if (net_dev) { | |
396 | if (!*found_net_dev) | |
397 | *found_net_dev = net_dev; | |
398 | else | |
399 | dev_put(net_dev); | |
400 | ++matches; | |
401 | } | |
402 | } | |
403 | ||
404 | /* Check child interfaces */ | |
405 | down_read_nested(&priv->vlan_rwsem, nesting); | |
406 | list_for_each_entry(child_priv, &priv->child_intfs, list) { | |
407 | matches += ipoib_match_gid_pkey_addr(child_priv, gid, | |
408 | pkey_index, addr, | |
409 | nesting + 1, | |
410 | found_net_dev); | |
411 | if (matches > 1) | |
412 | break; | |
413 | } | |
414 | up_read(&priv->vlan_rwsem); | |
415 | ||
416 | return matches; | |
417 | } | |
418 | ||
419 | /* Returns the number of matching net_devs found (between 0 and 2). Also | |
420 | * return the matching net_device in the @net_dev parameter, holding a | |
421 | * reference to the net_device, if the number of matches >= 1 */ | |
422 | static int __ipoib_get_net_dev_by_params(struct list_head *dev_list, u8 port, | |
423 | u16 pkey_index, | |
424 | const union ib_gid *gid, | |
425 | const struct sockaddr *addr, | |
426 | struct net_device **net_dev) | |
427 | { | |
428 | struct ipoib_dev_priv *priv; | |
429 | int matches = 0; | |
430 | ||
431 | *net_dev = NULL; | |
432 | ||
433 | list_for_each_entry(priv, dev_list, list) { | |
434 | if (priv->port != port) | |
435 | continue; | |
436 | ||
437 | matches += ipoib_match_gid_pkey_addr(priv, gid, pkey_index, | |
438 | addr, 0, net_dev); | |
439 | if (matches > 1) | |
440 | break; | |
441 | } | |
442 | ||
443 | return matches; | |
444 | } | |
445 | ||
446 | static struct net_device *ipoib_get_net_dev_by_params( | |
447 | struct ib_device *dev, u8 port, u16 pkey, | |
448 | const union ib_gid *gid, const struct sockaddr *addr, | |
449 | void *client_data) | |
450 | { | |
451 | struct net_device *net_dev; | |
452 | struct list_head *dev_list = client_data; | |
453 | u16 pkey_index; | |
454 | int matches; | |
455 | int ret; | |
456 | ||
457 | if (!rdma_protocol_ib(dev, port)) | |
458 | return NULL; | |
459 | ||
460 | ret = ib_find_cached_pkey(dev, port, pkey, &pkey_index); | |
461 | if (ret) | |
462 | return NULL; | |
463 | ||
464 | if (!dev_list) | |
465 | return NULL; | |
466 | ||
467 | /* See if we can find a unique device matching the L2 parameters */ | |
468 | matches = __ipoib_get_net_dev_by_params(dev_list, port, pkey_index, | |
469 | gid, NULL, &net_dev); | |
470 | ||
471 | switch (matches) { | |
472 | case 0: | |
473 | return NULL; | |
474 | case 1: | |
475 | return net_dev; | |
476 | } | |
477 | ||
478 | dev_put(net_dev); | |
479 | ||
480 | /* Couldn't find a unique device with L2 parameters only. Use L3 | |
481 | * address to uniquely match the net device */ | |
482 | matches = __ipoib_get_net_dev_by_params(dev_list, port, pkey_index, | |
483 | gid, addr, &net_dev); | |
484 | switch (matches) { | |
485 | case 0: | |
486 | return NULL; | |
487 | default: | |
488 | dev_warn_ratelimited(&dev->dev, | |
489 | "duplicate IP address detected\n"); | |
490 | /* Fall through */ | |
491 | case 1: | |
492 | return net_dev; | |
493 | } | |
494 | } | |
495 | ||
71d9c5f9 RD |
496 | int ipoib_set_mode(struct net_device *dev, const char *buf) |
497 | { | |
c1048aff | 498 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
71d9c5f9 | 499 | |
80b5b35a FD |
500 | if ((test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags) && |
501 | !strcmp(buf, "connected\n")) || | |
502 | (!test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags) && | |
503 | !strcmp(buf, "datagram\n"))) { | |
504 | return 0; | |
505 | } | |
506 | ||
71d9c5f9 RD |
507 | /* flush paths if we switch modes so that connections are restarted */ |
508 | if (IPOIB_CM_SUPPORTED(dev->dev_addr) && !strcmp(buf, "connected\n")) { | |
509 | set_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); | |
510 | ipoib_warn(priv, "enabling connected mode " | |
511 | "will cause multicast packet drops\n"); | |
512 | netdev_update_features(dev); | |
edcd2a74 | 513 | dev_set_mtu(dev, ipoib_cm_max_mtu(dev)); |
71d9c5f9 | 514 | rtnl_unlock(); |
e622f2f4 | 515 | priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM; |
71d9c5f9 RD |
516 | |
517 | ipoib_flush_paths(dev); | |
0a0007f2 | 518 | return (!rtnl_trylock()) ? -EBUSY : 0; |
71d9c5f9 RD |
519 | } |
520 | ||
521 | if (!strcmp(buf, "datagram\n")) { | |
522 | clear_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); | |
523 | netdev_update_features(dev); | |
524 | dev_set_mtu(dev, min(priv->mcast_mtu, dev->mtu)); | |
525 | rtnl_unlock(); | |
526 | ipoib_flush_paths(dev); | |
0a0007f2 | 527 | return (!rtnl_trylock()) ? -EBUSY : 0; |
71d9c5f9 RD |
528 | } |
529 | ||
530 | return -EINVAL; | |
531 | } | |
532 | ||
546481c2 | 533 | struct ipoib_path *__path_find(struct net_device *dev, void *gid) |
1da177e4 | 534 | { |
c1048aff | 535 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 LT |
536 | struct rb_node *n = priv->path_tree.rb_node; |
537 | struct ipoib_path *path; | |
538 | int ret; | |
539 | ||
540 | while (n) { | |
541 | path = rb_entry(n, struct ipoib_path, rb_node); | |
542 | ||
37c22a77 | 543 | ret = memcmp(gid, path->pathrec.dgid.raw, |
1da177e4 LT |
544 | sizeof (union ib_gid)); |
545 | ||
546 | if (ret < 0) | |
547 | n = n->rb_left; | |
548 | else if (ret > 0) | |
549 | n = n->rb_right; | |
550 | else | |
551 | return path; | |
552 | } | |
553 | ||
554 | return NULL; | |
555 | } | |
556 | ||
557 | static int __path_add(struct net_device *dev, struct ipoib_path *path) | |
558 | { | |
c1048aff | 559 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 LT |
560 | struct rb_node **n = &priv->path_tree.rb_node; |
561 | struct rb_node *pn = NULL; | |
562 | struct ipoib_path *tpath; | |
563 | int ret; | |
564 | ||
565 | while (*n) { | |
566 | pn = *n; | |
567 | tpath = rb_entry(pn, struct ipoib_path, rb_node); | |
568 | ||
569 | ret = memcmp(path->pathrec.dgid.raw, tpath->pathrec.dgid.raw, | |
570 | sizeof (union ib_gid)); | |
571 | if (ret < 0) | |
572 | n = &pn->rb_left; | |
573 | else if (ret > 0) | |
574 | n = &pn->rb_right; | |
575 | else | |
576 | return -EEXIST; | |
577 | } | |
578 | ||
579 | rb_link_node(&path->rb_node, pn, n); | |
580 | rb_insert_color(&path->rb_node, &priv->path_tree); | |
581 | ||
582 | list_add_tail(&path->list, &priv->path_list); | |
583 | ||
584 | return 0; | |
585 | } | |
586 | ||
587 | static void path_free(struct net_device *dev, struct ipoib_path *path) | |
588 | { | |
1da177e4 | 589 | struct sk_buff *skb; |
1da177e4 LT |
590 | |
591 | while ((skb = __skb_dequeue(&path->queue))) | |
592 | dev_kfree_skb_irq(skb); | |
593 | ||
c1048aff | 594 | ipoib_dbg(ipoib_priv(dev), "path_free\n"); |
1da177e4 | 595 | |
b63b70d8 SP |
596 | /* remove all neigh connected to this path */ |
597 | ipoib_del_neighs_by_gid(dev, path->pathrec.dgid.raw); | |
1da177e4 LT |
598 | |
599 | if (path->ah) | |
600 | ipoib_put_ah(path->ah); | |
601 | ||
602 | kfree(path); | |
603 | } | |
604 | ||
1732b0ef RD |
605 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
606 | ||
607 | struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev) | |
608 | { | |
609 | struct ipoib_path_iter *iter; | |
610 | ||
611 | iter = kmalloc(sizeof *iter, GFP_KERNEL); | |
612 | if (!iter) | |
613 | return NULL; | |
614 | ||
615 | iter->dev = dev; | |
616 | memset(iter->path.pathrec.dgid.raw, 0, 16); | |
617 | ||
618 | if (ipoib_path_iter_next(iter)) { | |
619 | kfree(iter); | |
620 | return NULL; | |
621 | } | |
622 | ||
623 | return iter; | |
624 | } | |
625 | ||
626 | int ipoib_path_iter_next(struct ipoib_path_iter *iter) | |
627 | { | |
c1048aff | 628 | struct ipoib_dev_priv *priv = ipoib_priv(iter->dev); |
1732b0ef RD |
629 | struct rb_node *n; |
630 | struct ipoib_path *path; | |
631 | int ret = 1; | |
632 | ||
633 | spin_lock_irq(&priv->lock); | |
634 | ||
635 | n = rb_first(&priv->path_tree); | |
636 | ||
637 | while (n) { | |
638 | path = rb_entry(n, struct ipoib_path, rb_node); | |
639 | ||
640 | if (memcmp(iter->path.pathrec.dgid.raw, path->pathrec.dgid.raw, | |
641 | sizeof (union ib_gid)) < 0) { | |
642 | iter->path = *path; | |
643 | ret = 0; | |
644 | break; | |
645 | } | |
646 | ||
647 | n = rb_next(n); | |
648 | } | |
649 | ||
650 | spin_unlock_irq(&priv->lock); | |
651 | ||
652 | return ret; | |
653 | } | |
654 | ||
655 | void ipoib_path_iter_read(struct ipoib_path_iter *iter, | |
656 | struct ipoib_path *path) | |
657 | { | |
658 | *path = iter->path; | |
659 | } | |
660 | ||
661 | #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ | |
662 | ||
ee1e2c82 MS |
663 | void ipoib_mark_paths_invalid(struct net_device *dev) |
664 | { | |
c1048aff | 665 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
ee1e2c82 MS |
666 | struct ipoib_path *path, *tp; |
667 | ||
668 | spin_lock_irq(&priv->lock); | |
669 | ||
670 | list_for_each_entry_safe(path, tp, &priv->path_list, list) { | |
57520751 DC |
671 | ipoib_dbg(priv, "mark path LID 0x%08x GID %pI6 invalid\n", |
672 | be32_to_cpu(sa_path_get_dlid(&path->pathrec)), | |
673 | path->pathrec.dgid.raw); | |
ee1e2c82 MS |
674 | path->valid = 0; |
675 | } | |
676 | ||
677 | spin_unlock_irq(&priv->lock); | |
678 | } | |
679 | ||
2b084176 ES |
680 | static void push_pseudo_header(struct sk_buff *skb, const char *daddr) |
681 | { | |
682 | struct ipoib_pseudo_header *phdr; | |
683 | ||
684 | phdr = (struct ipoib_pseudo_header *)skb_push(skb, sizeof(*phdr)); | |
685 | memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN); | |
686 | } | |
687 | ||
1da177e4 LT |
688 | void ipoib_flush_paths(struct net_device *dev) |
689 | { | |
c1048aff | 690 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 LT |
691 | struct ipoib_path *path, *tp; |
692 | LIST_HEAD(remove_list); | |
943c246e | 693 | unsigned long flags; |
1da177e4 | 694 | |
943c246e RD |
695 | netif_tx_lock_bh(dev); |
696 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 697 | |
157de229 | 698 | list_splice_init(&priv->path_list, &remove_list); |
1da177e4 LT |
699 | |
700 | list_for_each_entry(path, &remove_list, list) | |
701 | rb_erase(&path->rb_node, &priv->path_tree); | |
702 | ||
1da177e4 LT |
703 | list_for_each_entry_safe(path, tp, &remove_list, list) { |
704 | if (path->query) | |
705 | ib_sa_cancel_query(path->query_id, path->query); | |
943c246e RD |
706 | spin_unlock_irqrestore(&priv->lock, flags); |
707 | netif_tx_unlock_bh(dev); | |
1da177e4 LT |
708 | wait_for_completion(&path->done); |
709 | path_free(dev, path); | |
943c246e RD |
710 | netif_tx_lock_bh(dev); |
711 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 712 | } |
943c246e RD |
713 | |
714 | spin_unlock_irqrestore(&priv->lock, flags); | |
715 | netif_tx_unlock_bh(dev); | |
1da177e4 LT |
716 | } |
717 | ||
718 | static void path_rec_completion(int status, | |
c2f8fc4e | 719 | struct sa_path_rec *pathrec, |
1da177e4 LT |
720 | void *path_ptr) |
721 | { | |
722 | struct ipoib_path *path = path_ptr; | |
723 | struct net_device *dev = path->dev; | |
c1048aff | 724 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 | 725 | struct ipoib_ah *ah = NULL; |
c9da4bad | 726 | struct ipoib_ah *old_ah = NULL; |
d04d01b1 | 727 | struct ipoib_neigh *neigh, *tn; |
1da177e4 LT |
728 | struct sk_buff_head skqueue; |
729 | struct sk_buff *skb; | |
730 | unsigned long flags; | |
731 | ||
843613b0 | 732 | if (!status) |
5b095d98 | 733 | ipoib_dbg(priv, "PathRec LID 0x%04x for GID %pI6\n", |
57520751 | 734 | be32_to_cpu(sa_path_get_dlid(pathrec)), |
9fdca4da | 735 | pathrec->dgid.raw); |
1da177e4 | 736 | else |
5b095d98 | 737 | ipoib_dbg(priv, "PathRec status %d for GID %pI6\n", |
fcace2fe | 738 | status, path->pathrec.dgid.raw); |
1da177e4 LT |
739 | |
740 | skb_queue_head_init(&skqueue); | |
741 | ||
742 | if (!status) { | |
90898850 | 743 | struct rdma_ah_attr av; |
46f1b3d7 SH |
744 | |
745 | if (!ib_init_ah_from_path(priv->ca, priv->port, pathrec, &av)) | |
746 | ah = ipoib_create_ah(dev, priv->pd, &av); | |
1da177e4 LT |
747 | } |
748 | ||
749 | spin_lock_irqsave(&priv->lock, flags); | |
750 | ||
3874397c | 751 | if (!IS_ERR_OR_NULL(ah)) { |
1da177e4 LT |
752 | path->pathrec = *pathrec; |
753 | ||
c9da4bad RD |
754 | old_ah = path->ah; |
755 | path->ah = ah; | |
756 | ||
1da177e4 | 757 | ipoib_dbg(priv, "created address handle %p for LID 0x%04x, SL %d\n", |
57520751 | 758 | ah, be32_to_cpu(sa_path_get_dlid(pathrec)), |
9fdca4da | 759 | pathrec->sl); |
1da177e4 LT |
760 | |
761 | while ((skb = __skb_dequeue(&path->queue))) | |
762 | __skb_queue_tail(&skqueue, skb); | |
763 | ||
d04d01b1 | 764 | list_for_each_entry_safe(neigh, tn, &path->neigh_list, list) { |
ee1e2c82 MS |
765 | if (neigh->ah) { |
766 | WARN_ON(neigh->ah != old_ah); | |
767 | /* | |
768 | * Dropping the ah reference inside | |
769 | * priv->lock is safe here, because we | |
770 | * will hold one more reference from | |
771 | * the original value of path->ah (ie | |
772 | * old_ah). | |
773 | */ | |
774 | ipoib_put_ah(neigh->ah); | |
775 | } | |
1da177e4 LT |
776 | kref_get(&path->ah->ref); |
777 | neigh->ah = path->ah; | |
778 | ||
b63b70d8 | 779 | if (ipoib_cm_enabled(dev, neigh->daddr)) { |
839fcaba MT |
780 | if (!ipoib_cm_get(neigh)) |
781 | ipoib_cm_set(neigh, ipoib_cm_create_tx(dev, | |
782 | path, | |
783 | neigh)); | |
784 | if (!ipoib_cm_get(neigh)) { | |
b63b70d8 | 785 | ipoib_neigh_free(neigh); |
839fcaba MT |
786 | continue; |
787 | } | |
788 | } | |
789 | ||
1da177e4 LT |
790 | while ((skb = __skb_dequeue(&neigh->queue))) |
791 | __skb_queue_tail(&skqueue, skb); | |
792 | } | |
ee1e2c82 | 793 | path->valid = 1; |
5872a9fc | 794 | } |
1da177e4 | 795 | |
5872a9fc | 796 | path->query = NULL; |
1da177e4 LT |
797 | complete(&path->done); |
798 | ||
799 | spin_unlock_irqrestore(&priv->lock, flags); | |
800 | ||
f72dd566 RD |
801 | if (IS_ERR_OR_NULL(ah)) |
802 | ipoib_del_neighs_by_gid(dev, path->pathrec.dgid.raw); | |
803 | ||
ee1e2c82 MS |
804 | if (old_ah) |
805 | ipoib_put_ah(old_ah); | |
806 | ||
1da177e4 | 807 | while ((skb = __skb_dequeue(&skqueue))) { |
d32b9a81 | 808 | int ret; |
1da177e4 | 809 | skb->dev = dev; |
d32b9a81 FD |
810 | ret = dev_queue_xmit(skb); |
811 | if (ret) | |
812 | ipoib_warn(priv, "%s: dev_queue_xmit failed to re-queue packet, ret:%d\n", | |
813 | __func__, ret); | |
1da177e4 LT |
814 | } |
815 | } | |
816 | ||
37c22a77 | 817 | static struct ipoib_path *path_rec_create(struct net_device *dev, void *gid) |
1da177e4 | 818 | { |
c1048aff | 819 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 LT |
820 | struct ipoib_path *path; |
821 | ||
1401b53a JM |
822 | if (!priv->broadcast) |
823 | return NULL; | |
824 | ||
21a38489 | 825 | path = kzalloc(sizeof *path, GFP_ATOMIC); |
1da177e4 LT |
826 | if (!path) |
827 | return NULL; | |
828 | ||
21a38489 | 829 | path->dev = dev; |
1da177e4 LT |
830 | |
831 | skb_queue_head_init(&path->queue); | |
832 | ||
833 | INIT_LIST_HEAD(&path->neigh_list); | |
1da177e4 | 834 | |
4c33bd19 DC |
835 | if (rdma_cap_opa_ah(priv->ca, priv->port)) |
836 | path->pathrec.rec_type = SA_PATH_REC_TYPE_OPA; | |
837 | else | |
838 | path->pathrec.rec_type = SA_PATH_REC_TYPE_IB; | |
37c22a77 | 839 | memcpy(path->pathrec.dgid.raw, gid, sizeof (union ib_gid)); |
2337f809 RD |
840 | path->pathrec.sgid = priv->local_gid; |
841 | path->pathrec.pkey = cpu_to_be16(priv->pkey); | |
81668838 SH |
842 | path->pathrec.numb_path = 1; |
843 | path->pathrec.traffic_class = priv->broadcast->mcmember.traffic_class; | |
1da177e4 LT |
844 | |
845 | return path; | |
846 | } | |
847 | ||
848 | static int path_rec_start(struct net_device *dev, | |
849 | struct ipoib_path *path) | |
850 | { | |
c1048aff | 851 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 | 852 | |
5b095d98 | 853 | ipoib_dbg(priv, "Start path record lookup for %pI6\n", |
fcace2fe | 854 | path->pathrec.dgid.raw); |
1da177e4 | 855 | |
65c7edda RD |
856 | init_completion(&path->done); |
857 | ||
1da177e4 | 858 | path->query_id = |
c1a0b23b | 859 | ib_sa_path_rec_get(&ipoib_sa_client, priv->ca, priv->port, |
1da177e4 LT |
860 | &path->pathrec, |
861 | IB_SA_PATH_REC_DGID | | |
862 | IB_SA_PATH_REC_SGID | | |
863 | IB_SA_PATH_REC_NUMB_PATH | | |
81668838 | 864 | IB_SA_PATH_REC_TRAFFIC_CLASS | |
1da177e4 LT |
865 | IB_SA_PATH_REC_PKEY, |
866 | 1000, GFP_ATOMIC, | |
867 | path_rec_completion, | |
868 | path, &path->query); | |
869 | if (path->query_id < 0) { | |
01b3fc8b | 870 | ipoib_warn(priv, "ib_sa_path_rec_get failed: %d\n", path->query_id); |
1da177e4 | 871 | path->query = NULL; |
93a3ab93 | 872 | complete(&path->done); |
1da177e4 LT |
873 | return path->query_id; |
874 | } | |
875 | ||
876 | return 0; | |
877 | } | |
878 | ||
b63b70d8 SP |
879 | static void neigh_add_path(struct sk_buff *skb, u8 *daddr, |
880 | struct net_device *dev) | |
1da177e4 | 881 | { |
c1048aff | 882 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
cd565b4b | 883 | struct rdma_netdev *rn = netdev_priv(dev); |
1da177e4 LT |
884 | struct ipoib_path *path; |
885 | struct ipoib_neigh *neigh; | |
943c246e | 886 | unsigned long flags; |
1da177e4 | 887 | |
b5120a6e | 888 | spin_lock_irqsave(&priv->lock, flags); |
b63b70d8 | 889 | neigh = ipoib_neigh_alloc(daddr, dev); |
1da177e4 | 890 | if (!neigh) { |
b5120a6e | 891 | spin_unlock_irqrestore(&priv->lock, flags); |
de903512 | 892 | ++dev->stats.tx_dropped; |
1da177e4 LT |
893 | dev_kfree_skb_any(skb); |
894 | return; | |
895 | } | |
896 | ||
b63b70d8 | 897 | path = __path_find(dev, daddr + 4); |
1da177e4 | 898 | if (!path) { |
b63b70d8 | 899 | path = path_rec_create(dev, daddr + 4); |
1da177e4 | 900 | if (!path) |
d2e0655e | 901 | goto err_path; |
1da177e4 LT |
902 | |
903 | __path_add(dev, path); | |
904 | } | |
905 | ||
906 | list_add_tail(&neigh->list, &path->neigh_list); | |
907 | ||
47f7a071 | 908 | if (path->ah) { |
1da177e4 LT |
909 | kref_get(&path->ah->ref); |
910 | neigh->ah = path->ah; | |
911 | ||
b63b70d8 | 912 | if (ipoib_cm_enabled(dev, neigh->daddr)) { |
839fcaba MT |
913 | if (!ipoib_cm_get(neigh)) |
914 | ipoib_cm_set(neigh, ipoib_cm_create_tx(dev, path, neigh)); | |
915 | if (!ipoib_cm_get(neigh)) { | |
b63b70d8 | 916 | ipoib_neigh_free(neigh); |
839fcaba MT |
917 | goto err_drop; |
918 | } | |
fc791b63 PA |
919 | if (skb_queue_len(&neigh->queue) < |
920 | IPOIB_MAX_PATH_REC_QUEUE) { | |
2b084176 | 921 | push_pseudo_header(skb, neigh->daddr); |
839fcaba | 922 | __skb_queue_tail(&neigh->queue, skb); |
fc791b63 | 923 | } else { |
839fcaba MT |
924 | ipoib_warn(priv, "queue length limit %d. Packet drop.\n", |
925 | skb_queue_len(&neigh->queue)); | |
926 | goto err_drop; | |
927 | } | |
721d67cd RD |
928 | } else { |
929 | spin_unlock_irqrestore(&priv->lock, flags); | |
cd565b4b ES |
930 | path->ah->last_send = rn->send(dev, skb, path->ah->ah, |
931 | IPOIB_QPN(daddr)); | |
b63b70d8 | 932 | ipoib_neigh_put(neigh); |
721d67cd RD |
933 | return; |
934 | } | |
1da177e4 LT |
935 | } else { |
936 | neigh->ah = NULL; | |
1da177e4 LT |
937 | |
938 | if (!path->query && path_rec_start(dev, path)) | |
49b8e744 | 939 | goto err_path; |
2b084176 ES |
940 | if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) { |
941 | push_pseudo_header(skb, neigh->daddr); | |
1e85b806 | 942 | __skb_queue_tail(&neigh->queue, skb); |
2b084176 | 943 | } else { |
1e85b806 | 944 | goto err_drop; |
2b084176 | 945 | } |
1da177e4 LT |
946 | } |
947 | ||
943c246e | 948 | spin_unlock_irqrestore(&priv->lock, flags); |
b63b70d8 | 949 | ipoib_neigh_put(neigh); |
1da177e4 LT |
950 | return; |
951 | ||
d2e0655e | 952 | err_path: |
b63b70d8 | 953 | ipoib_neigh_free(neigh); |
839fcaba | 954 | err_drop: |
de903512 | 955 | ++dev->stats.tx_dropped; |
1da177e4 LT |
956 | dev_kfree_skb_any(skb); |
957 | ||
943c246e | 958 | spin_unlock_irqrestore(&priv->lock, flags); |
b63b70d8 | 959 | ipoib_neigh_put(neigh); |
1da177e4 LT |
960 | } |
961 | ||
962 | static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev, | |
fc791b63 | 963 | struct ipoib_pseudo_header *phdr) |
1da177e4 | 964 | { |
c1048aff | 965 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
cd565b4b | 966 | struct rdma_netdev *rn = netdev_priv(dev); |
1da177e4 | 967 | struct ipoib_path *path; |
943c246e | 968 | unsigned long flags; |
1da177e4 | 969 | |
943c246e | 970 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 971 | |
fc791b63 | 972 | path = __path_find(dev, phdr->hwaddr + 4); |
ee1e2c82 | 973 | if (!path || !path->valid) { |
71d98b46 JM |
974 | int new_path = 0; |
975 | ||
976 | if (!path) { | |
fc791b63 | 977 | path = path_rec_create(dev, phdr->hwaddr + 4); |
71d98b46 JM |
978 | new_path = 1; |
979 | } | |
1da177e4 | 980 | if (path) { |
1e85b806 | 981 | if (skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) { |
2b084176 | 982 | push_pseudo_header(skb, phdr->hwaddr); |
1e85b806 ES |
983 | __skb_queue_tail(&path->queue, skb); |
984 | } else { | |
985 | ++dev->stats.tx_dropped; | |
986 | dev_kfree_skb_any(skb); | |
987 | } | |
1da177e4 | 988 | |
ff79ae80 | 989 | if (!path->query && path_rec_start(dev, path)) { |
943c246e | 990 | spin_unlock_irqrestore(&priv->lock, flags); |
71d98b46 JM |
991 | if (new_path) |
992 | path_free(dev, path); | |
1da177e4 LT |
993 | return; |
994 | } else | |
995 | __path_add(dev, path); | |
996 | } else { | |
de903512 | 997 | ++dev->stats.tx_dropped; |
1da177e4 LT |
998 | dev_kfree_skb_any(skb); |
999 | } | |
1000 | ||
943c246e | 1001 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
1002 | return; |
1003 | } | |
1004 | ||
47f7a071 | 1005 | if (path->ah) { |
57520751 DC |
1006 | ipoib_dbg(priv, "Send unicast ARP to %08x\n", |
1007 | be32_to_cpu(sa_path_get_dlid(&path->pathrec))); | |
1da177e4 | 1008 | |
721d67cd | 1009 | spin_unlock_irqrestore(&priv->lock, flags); |
cd565b4b ES |
1010 | path->ah->last_send = rn->send(dev, skb, path->ah->ah, |
1011 | IPOIB_QPN(phdr->hwaddr)); | |
721d67cd | 1012 | return; |
1da177e4 LT |
1013 | } else if ((path->query || !path_rec_start(dev, path)) && |
1014 | skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) { | |
2b084176 | 1015 | push_pseudo_header(skb, phdr->hwaddr); |
1da177e4 LT |
1016 | __skb_queue_tail(&path->queue, skb); |
1017 | } else { | |
de903512 | 1018 | ++dev->stats.tx_dropped; |
1da177e4 LT |
1019 | dev_kfree_skb_any(skb); |
1020 | } | |
1021 | ||
943c246e | 1022 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
1023 | } |
1024 | ||
1025 | static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1026 | { | |
c1048aff | 1027 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
cd565b4b | 1028 | struct rdma_netdev *rn = netdev_priv(dev); |
1da177e4 | 1029 | struct ipoib_neigh *neigh; |
fc791b63 | 1030 | struct ipoib_pseudo_header *phdr; |
b63b70d8 | 1031 | struct ipoib_header *header; |
1da177e4 LT |
1032 | unsigned long flags; |
1033 | ||
fc791b63 PA |
1034 | phdr = (struct ipoib_pseudo_header *) skb->data; |
1035 | skb_pull(skb, sizeof(*phdr)); | |
b63b70d8 SP |
1036 | header = (struct ipoib_header *) skb->data; |
1037 | ||
fc791b63 | 1038 | if (unlikely(phdr->hwaddr[4] == 0xff)) { |
b63b70d8 SP |
1039 | /* multicast, arrange "if" according to probability */ |
1040 | if ((header->proto != htons(ETH_P_IP)) && | |
1041 | (header->proto != htons(ETH_P_IPV6)) && | |
1042 | (header->proto != htons(ETH_P_ARP)) && | |
dc850b0e PM |
1043 | (header->proto != htons(ETH_P_RARP)) && |
1044 | (header->proto != htons(ETH_P_TIPC))) { | |
b63b70d8 | 1045 | /* ethertype not supported by IPoIB */ |
17e6abee DM |
1046 | ++dev->stats.tx_dropped; |
1047 | dev_kfree_skb_any(skb); | |
b63b70d8 | 1048 | return NETDEV_TX_OK; |
17e6abee | 1049 | } |
b63b70d8 | 1050 | /* Add in the P_Key for multicast*/ |
fc791b63 PA |
1051 | phdr->hwaddr[8] = (priv->pkey >> 8) & 0xff; |
1052 | phdr->hwaddr[9] = priv->pkey & 0xff; | |
b63b70d8 | 1053 | |
fc791b63 | 1054 | neigh = ipoib_neigh_get(dev, phdr->hwaddr); |
b63b70d8 SP |
1055 | if (likely(neigh)) |
1056 | goto send_using_neigh; | |
fc791b63 | 1057 | ipoib_mcast_send(dev, phdr->hwaddr, skb); |
b63b70d8 | 1058 | return NETDEV_TX_OK; |
17e6abee | 1059 | } |
1da177e4 | 1060 | |
b63b70d8 SP |
1061 | /* unicast, arrange "switch" according to probability */ |
1062 | switch (header->proto) { | |
1063 | case htons(ETH_P_IP): | |
1064 | case htons(ETH_P_IPV6): | |
dc850b0e | 1065 | case htons(ETH_P_TIPC): |
fc791b63 | 1066 | neigh = ipoib_neigh_get(dev, phdr->hwaddr); |
b63b70d8 | 1067 | if (unlikely(!neigh)) { |
fc791b63 | 1068 | neigh_add_path(skb, phdr->hwaddr, dev); |
b63b70d8 | 1069 | return NETDEV_TX_OK; |
a50df398 | 1070 | } |
b63b70d8 SP |
1071 | break; |
1072 | case htons(ETH_P_ARP): | |
1073 | case htons(ETH_P_RARP): | |
1074 | /* for unicast ARP and RARP should always perform path find */ | |
fc791b63 | 1075 | unicast_arp_send(skb, dev, phdr); |
b63b70d8 SP |
1076 | return NETDEV_TX_OK; |
1077 | default: | |
1078 | /* ethertype not supported by IPoIB */ | |
1079 | ++dev->stats.tx_dropped; | |
1080 | dev_kfree_skb_any(skb); | |
1081 | return NETDEV_TX_OK; | |
1082 | } | |
8a7f7521 | 1083 | |
b63b70d8 SP |
1084 | send_using_neigh: |
1085 | /* note we now hold a ref to neigh */ | |
1086 | if (ipoib_cm_get(neigh)) { | |
1087 | if (ipoib_cm_up(neigh)) { | |
1088 | ipoib_cm_send(dev, skb, ipoib_cm_get(neigh)); | |
1089 | goto unref; | |
1da177e4 | 1090 | } |
b63b70d8 | 1091 | } else if (neigh->ah) { |
cd565b4b ES |
1092 | neigh->ah->last_send = rn->send(dev, skb, neigh->ah->ah, |
1093 | IPOIB_QPN(phdr->hwaddr)); | |
b63b70d8 SP |
1094 | goto unref; |
1095 | } | |
1da177e4 | 1096 | |
b63b70d8 | 1097 | if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) { |
2b084176 | 1098 | push_pseudo_header(skb, phdr->hwaddr); |
b63b70d8 SP |
1099 | spin_lock_irqsave(&priv->lock, flags); |
1100 | __skb_queue_tail(&neigh->queue, skb); | |
1101 | spin_unlock_irqrestore(&priv->lock, flags); | |
1da177e4 | 1102 | } else { |
b63b70d8 SP |
1103 | ++dev->stats.tx_dropped; |
1104 | dev_kfree_skb_any(skb); | |
1105 | } | |
1da177e4 | 1106 | |
b63b70d8 SP |
1107 | unref: |
1108 | ipoib_neigh_put(neigh); | |
1da177e4 | 1109 | |
1da177e4 LT |
1110 | return NETDEV_TX_OK; |
1111 | } | |
1112 | ||
1da177e4 LT |
1113 | static void ipoib_timeout(struct net_device *dev) |
1114 | { | |
c1048aff | 1115 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 | 1116 | |
4b2d319b | 1117 | ipoib_warn(priv, "transmit timeout: latency %d msecs\n", |
4d0e9657 | 1118 | jiffies_to_msecs(jiffies - dev_trans_start(dev))); |
4b2d319b RD |
1119 | ipoib_warn(priv, "queue stopped %d, tx_head %u, tx_tail %u\n", |
1120 | netif_queue_stopped(dev), | |
1121 | priv->tx_head, priv->tx_tail); | |
1da177e4 LT |
1122 | /* XXX reset QP, etc. */ |
1123 | } | |
1124 | ||
1125 | static int ipoib_hard_header(struct sk_buff *skb, | |
1126 | struct net_device *dev, | |
1127 | unsigned short type, | |
3b04ddde | 1128 | const void *daddr, const void *saddr, unsigned len) |
1da177e4 LT |
1129 | { |
1130 | struct ipoib_header *header; | |
1131 | ||
1132 | header = (struct ipoib_header *) skb_push(skb, sizeof *header); | |
1133 | ||
1134 | header->proto = htons(type); | |
1135 | header->reserved = 0; | |
1136 | ||
1137 | /* | |
b63b70d8 | 1138 | * we don't rely on dst_entry structure, always stuff the |
fc791b63 | 1139 | * destination address into skb hard header so we can figure out where |
936d7de3 | 1140 | * to send the packet later. |
1da177e4 | 1141 | */ |
2b084176 | 1142 | push_pseudo_header(skb, daddr); |
1da177e4 | 1143 | |
fc791b63 | 1144 | return IPOIB_HARD_LEN; |
1da177e4 LT |
1145 | } |
1146 | ||
1147 | static void ipoib_set_mcast_list(struct net_device *dev) | |
1148 | { | |
c1048aff | 1149 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 | 1150 | |
7a343d4c LA |
1151 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) { |
1152 | ipoib_dbg(priv, "IPOIB_FLAG_OPER_UP not set"); | |
1153 | return; | |
1154 | } | |
1155 | ||
0b39578b | 1156 | queue_work(priv->wq, &priv->restart_task); |
1da177e4 LT |
1157 | } |
1158 | ||
5aa7add8 ND |
1159 | static int ipoib_get_iflink(const struct net_device *dev) |
1160 | { | |
c1048aff | 1161 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
5aa7add8 | 1162 | |
2c153959 ES |
1163 | /* parent interface */ |
1164 | if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) | |
1165 | return dev->ifindex; | |
1166 | ||
1167 | /* child/vlan interface */ | |
5aa7add8 ND |
1168 | return priv->parent->ifindex; |
1169 | } | |
1170 | ||
b63b70d8 | 1171 | static u32 ipoib_addr_hash(struct ipoib_neigh_hash *htbl, u8 *daddr) |
1da177e4 | 1172 | { |
b63b70d8 SP |
1173 | /* |
1174 | * Use only the address parts that contributes to spreading | |
1175 | * The subnet prefix is not used as one can not connect to | |
1176 | * same remote port (GUID) using the same remote QPN via two | |
1177 | * different subnets. | |
1178 | */ | |
1179 | /* qpn octets[1:4) & port GUID octets[12:20) */ | |
9d1ad66e | 1180 | u32 *d32 = (u32 *) daddr; |
b63b70d8 SP |
1181 | u32 hv; |
1182 | ||
9d1ad66e | 1183 | hv = jhash_3words(d32[3], d32[4], IPOIB_QPN_MASK & d32[0], 0); |
b63b70d8 SP |
1184 | return hv & htbl->mask; |
1185 | } | |
1186 | ||
1187 | struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr) | |
1188 | { | |
c1048aff | 1189 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
b63b70d8 SP |
1190 | struct ipoib_neigh_table *ntbl = &priv->ntbl; |
1191 | struct ipoib_neigh_hash *htbl; | |
1192 | struct ipoib_neigh *neigh = NULL; | |
1193 | u32 hash_val; | |
1194 | ||
1195 | rcu_read_lock_bh(); | |
1196 | ||
1197 | htbl = rcu_dereference_bh(ntbl->htbl); | |
1198 | ||
1199 | if (!htbl) | |
1200 | goto out_unlock; | |
1201 | ||
1202 | hash_val = ipoib_addr_hash(htbl, daddr); | |
1203 | for (neigh = rcu_dereference_bh(htbl->buckets[hash_val]); | |
1204 | neigh != NULL; | |
1205 | neigh = rcu_dereference_bh(neigh->hnext)) { | |
1206 | if (memcmp(daddr, neigh->daddr, INFINIBAND_ALEN) == 0) { | |
1207 | /* found, take one ref on behalf of the caller */ | |
1208 | if (!atomic_inc_not_zero(&neigh->refcnt)) { | |
1209 | /* deleted */ | |
1210 | neigh = NULL; | |
1211 | goto out_unlock; | |
1212 | } | |
61c78eea ES |
1213 | |
1214 | if (likely(skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE)) | |
1215 | neigh->alive = jiffies; | |
b63b70d8 SP |
1216 | goto out_unlock; |
1217 | } | |
1218 | } | |
1219 | ||
1220 | out_unlock: | |
1221 | rcu_read_unlock_bh(); | |
1222 | return neigh; | |
1223 | } | |
1224 | ||
1225 | static void __ipoib_reap_neigh(struct ipoib_dev_priv *priv) | |
1226 | { | |
1227 | struct ipoib_neigh_table *ntbl = &priv->ntbl; | |
1228 | struct ipoib_neigh_hash *htbl; | |
1229 | unsigned long neigh_obsolete; | |
1230 | unsigned long dt; | |
1da177e4 | 1231 | unsigned long flags; |
b63b70d8 | 1232 | int i; |
bd99b2e0 | 1233 | LIST_HEAD(remove_list); |
1da177e4 | 1234 | |
b63b70d8 | 1235 | if (test_bit(IPOIB_STOP_NEIGH_GC, &priv->flags)) |
732a2170 | 1236 | return; |
1da177e4 | 1237 | |
b5120a6e | 1238 | spin_lock_irqsave(&priv->lock, flags); |
b63b70d8 SP |
1239 | |
1240 | htbl = rcu_dereference_protected(ntbl->htbl, | |
b5120a6e | 1241 | lockdep_is_held(&priv->lock)); |
b63b70d8 SP |
1242 | |
1243 | if (!htbl) | |
1244 | goto out_unlock; | |
1245 | ||
1246 | /* neigh is obsolete if it was idle for two GC periods */ | |
1247 | dt = 2 * arp_tbl.gc_interval; | |
1248 | neigh_obsolete = jiffies - dt; | |
1249 | /* handle possible race condition */ | |
1250 | if (test_bit(IPOIB_STOP_NEIGH_GC, &priv->flags)) | |
1251 | goto out_unlock; | |
1252 | ||
1253 | for (i = 0; i < htbl->size; i++) { | |
1254 | struct ipoib_neigh *neigh; | |
1255 | struct ipoib_neigh __rcu **np = &htbl->buckets[i]; | |
1256 | ||
1257 | while ((neigh = rcu_dereference_protected(*np, | |
b5120a6e | 1258 | lockdep_is_held(&priv->lock))) != NULL) { |
b63b70d8 SP |
1259 | /* was the neigh idle for two GC periods */ |
1260 | if (time_after(neigh_obsolete, neigh->alive)) { | |
bd99b2e0 | 1261 | |
432c55ff | 1262 | ipoib_check_and_add_mcast_sendonly(priv, neigh->daddr + 4, &remove_list); |
bd99b2e0 | 1263 | |
b63b70d8 SP |
1264 | rcu_assign_pointer(*np, |
1265 | rcu_dereference_protected(neigh->hnext, | |
b5120a6e | 1266 | lockdep_is_held(&priv->lock))); |
b63b70d8 | 1267 | /* remove from path/mc list */ |
c586071d | 1268 | list_del_init(&neigh->list); |
b63b70d8 SP |
1269 | call_rcu(&neigh->rcu, ipoib_neigh_reclaim); |
1270 | } else { | |
1271 | np = &neigh->hnext; | |
1272 | } | |
1da177e4 | 1273 | |
b63b70d8 SP |
1274 | } |
1275 | } | |
1da177e4 | 1276 | |
b63b70d8 | 1277 | out_unlock: |
b5120a6e | 1278 | spin_unlock_irqrestore(&priv->lock, flags); |
50be28de | 1279 | ipoib_mcast_remove_list(&remove_list); |
b63b70d8 | 1280 | } |
1da177e4 | 1281 | |
b63b70d8 SP |
1282 | static void ipoib_reap_neigh(struct work_struct *work) |
1283 | { | |
1284 | struct ipoib_dev_priv *priv = | |
1285 | container_of(work, struct ipoib_dev_priv, neigh_reap_task.work); | |
1286 | ||
1287 | __ipoib_reap_neigh(priv); | |
1288 | ||
1289 | if (!test_bit(IPOIB_STOP_NEIGH_GC, &priv->flags)) | |
0b39578b | 1290 | queue_delayed_work(priv->wq, &priv->neigh_reap_task, |
b63b70d8 | 1291 | arp_tbl.gc_interval); |
1da177e4 LT |
1292 | } |
1293 | ||
b63b70d8 SP |
1294 | |
1295 | static struct ipoib_neigh *ipoib_neigh_ctor(u8 *daddr, | |
732a2170 | 1296 | struct net_device *dev) |
d2e0655e MT |
1297 | { |
1298 | struct ipoib_neigh *neigh; | |
1299 | ||
b63b70d8 | 1300 | neigh = kzalloc(sizeof *neigh, GFP_ATOMIC); |
d2e0655e MT |
1301 | if (!neigh) |
1302 | return NULL; | |
1303 | ||
732a2170 | 1304 | neigh->dev = dev; |
b63b70d8 | 1305 | memcpy(&neigh->daddr, daddr, sizeof(neigh->daddr)); |
82b39913 | 1306 | skb_queue_head_init(&neigh->queue); |
b63b70d8 | 1307 | INIT_LIST_HEAD(&neigh->list); |
839fcaba | 1308 | ipoib_cm_set(neigh, NULL); |
b63b70d8 SP |
1309 | /* one ref on behalf of the caller */ |
1310 | atomic_set(&neigh->refcnt, 1); | |
1311 | ||
1312 | return neigh; | |
1313 | } | |
1314 | ||
1315 | struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr, | |
1316 | struct net_device *dev) | |
1317 | { | |
c1048aff | 1318 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
b63b70d8 SP |
1319 | struct ipoib_neigh_table *ntbl = &priv->ntbl; |
1320 | struct ipoib_neigh_hash *htbl; | |
1321 | struct ipoib_neigh *neigh; | |
1322 | u32 hash_val; | |
1323 | ||
b63b70d8 | 1324 | htbl = rcu_dereference_protected(ntbl->htbl, |
b5120a6e | 1325 | lockdep_is_held(&priv->lock)); |
b63b70d8 SP |
1326 | if (!htbl) { |
1327 | neigh = NULL; | |
1328 | goto out_unlock; | |
1329 | } | |
1330 | ||
1331 | /* need to add a new neigh, but maybe some other thread succeeded? | |
1332 | * recalc hash, maybe hash resize took place so we do a search | |
1333 | */ | |
1334 | hash_val = ipoib_addr_hash(htbl, daddr); | |
1335 | for (neigh = rcu_dereference_protected(htbl->buckets[hash_val], | |
b5120a6e | 1336 | lockdep_is_held(&priv->lock)); |
b63b70d8 SP |
1337 | neigh != NULL; |
1338 | neigh = rcu_dereference_protected(neigh->hnext, | |
b5120a6e | 1339 | lockdep_is_held(&priv->lock))) { |
b63b70d8 SP |
1340 | if (memcmp(daddr, neigh->daddr, INFINIBAND_ALEN) == 0) { |
1341 | /* found, take one ref on behalf of the caller */ | |
1342 | if (!atomic_inc_not_zero(&neigh->refcnt)) { | |
1343 | /* deleted */ | |
1344 | neigh = NULL; | |
1345 | break; | |
1346 | } | |
1347 | neigh->alive = jiffies; | |
1348 | goto out_unlock; | |
1349 | } | |
1350 | } | |
1351 | ||
1352 | neigh = ipoib_neigh_ctor(daddr, dev); | |
1353 | if (!neigh) | |
1354 | goto out_unlock; | |
1355 | ||
1356 | /* one ref on behalf of the hash table */ | |
1357 | atomic_inc(&neigh->refcnt); | |
1358 | neigh->alive = jiffies; | |
1359 | /* put in hash */ | |
1360 | rcu_assign_pointer(neigh->hnext, | |
1361 | rcu_dereference_protected(htbl->buckets[hash_val], | |
b5120a6e | 1362 | lockdep_is_held(&priv->lock))); |
b63b70d8 SP |
1363 | rcu_assign_pointer(htbl->buckets[hash_val], neigh); |
1364 | atomic_inc(&ntbl->entries); | |
1365 | ||
1366 | out_unlock: | |
d2e0655e MT |
1367 | |
1368 | return neigh; | |
1369 | } | |
1370 | ||
b63b70d8 | 1371 | void ipoib_neigh_dtor(struct ipoib_neigh *neigh) |
d2e0655e | 1372 | { |
b63b70d8 SP |
1373 | /* neigh reference count was dropprd to zero */ |
1374 | struct net_device *dev = neigh->dev; | |
c1048aff | 1375 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
2745b5b7 | 1376 | struct sk_buff *skb; |
b63b70d8 SP |
1377 | if (neigh->ah) |
1378 | ipoib_put_ah(neigh->ah); | |
2745b5b7 | 1379 | while ((skb = __skb_dequeue(&neigh->queue))) { |
de903512 | 1380 | ++dev->stats.tx_dropped; |
2745b5b7 MT |
1381 | dev_kfree_skb_any(skb); |
1382 | } | |
839fcaba MT |
1383 | if (ipoib_cm_get(neigh)) |
1384 | ipoib_cm_destroy_tx(ipoib_cm_get(neigh)); | |
c1048aff | 1385 | ipoib_dbg(ipoib_priv(dev), |
b63b70d8 SP |
1386 | "neigh free for %06x %pI6\n", |
1387 | IPOIB_QPN(neigh->daddr), | |
1388 | neigh->daddr + 4); | |
d2e0655e | 1389 | kfree(neigh); |
b63b70d8 SP |
1390 | if (atomic_dec_and_test(&priv->ntbl.entries)) { |
1391 | if (test_bit(IPOIB_NEIGH_TBL_FLUSH, &priv->flags)) | |
1392 | complete(&priv->ntbl.flushed); | |
1393 | } | |
1394 | } | |
1395 | ||
1396 | static void ipoib_neigh_reclaim(struct rcu_head *rp) | |
1397 | { | |
1398 | /* Called as a result of removal from hash table */ | |
1399 | struct ipoib_neigh *neigh = container_of(rp, struct ipoib_neigh, rcu); | |
1400 | /* note TX context may hold another ref */ | |
1401 | ipoib_neigh_put(neigh); | |
d2e0655e MT |
1402 | } |
1403 | ||
b63b70d8 | 1404 | void ipoib_neigh_free(struct ipoib_neigh *neigh) |
1da177e4 | 1405 | { |
b63b70d8 | 1406 | struct net_device *dev = neigh->dev; |
c1048aff | 1407 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
b63b70d8 SP |
1408 | struct ipoib_neigh_table *ntbl = &priv->ntbl; |
1409 | struct ipoib_neigh_hash *htbl; | |
1410 | struct ipoib_neigh __rcu **np; | |
1411 | struct ipoib_neigh *n; | |
1412 | u32 hash_val; | |
1413 | ||
b63b70d8 | 1414 | htbl = rcu_dereference_protected(ntbl->htbl, |
b5120a6e | 1415 | lockdep_is_held(&priv->lock)); |
b63b70d8 | 1416 | if (!htbl) |
b5120a6e | 1417 | return; |
b63b70d8 SP |
1418 | |
1419 | hash_val = ipoib_addr_hash(htbl, neigh->daddr); | |
1420 | np = &htbl->buckets[hash_val]; | |
1421 | for (n = rcu_dereference_protected(*np, | |
b5120a6e | 1422 | lockdep_is_held(&priv->lock)); |
b63b70d8 | 1423 | n != NULL; |
6c723a68 | 1424 | n = rcu_dereference_protected(*np, |
b5120a6e | 1425 | lockdep_is_held(&priv->lock))) { |
b63b70d8 SP |
1426 | if (n == neigh) { |
1427 | /* found */ | |
1428 | rcu_assign_pointer(*np, | |
1429 | rcu_dereference_protected(neigh->hnext, | |
b5120a6e | 1430 | lockdep_is_held(&priv->lock))); |
49b8e744 | 1431 | /* remove from parent list */ |
c586071d | 1432 | list_del_init(&neigh->list); |
b63b70d8 | 1433 | call_rcu(&neigh->rcu, ipoib_neigh_reclaim); |
b5120a6e | 1434 | return; |
b63b70d8 SP |
1435 | } else { |
1436 | np = &n->hnext; | |
1437 | } | |
1438 | } | |
b63b70d8 SP |
1439 | } |
1440 | ||
1441 | static int ipoib_neigh_hash_init(struct ipoib_dev_priv *priv) | |
1442 | { | |
1443 | struct ipoib_neigh_table *ntbl = &priv->ntbl; | |
1444 | struct ipoib_neigh_hash *htbl; | |
52374967 | 1445 | struct ipoib_neigh __rcu **buckets; |
b63b70d8 SP |
1446 | u32 size; |
1447 | ||
1448 | clear_bit(IPOIB_NEIGH_TBL_FLUSH, &priv->flags); | |
1449 | ntbl->htbl = NULL; | |
b63b70d8 SP |
1450 | htbl = kzalloc(sizeof(*htbl), GFP_KERNEL); |
1451 | if (!htbl) | |
1452 | return -ENOMEM; | |
1453 | set_bit(IPOIB_STOP_NEIGH_GC, &priv->flags); | |
1454 | size = roundup_pow_of_two(arp_tbl.gc_thresh3); | |
1455 | buckets = kzalloc(size * sizeof(*buckets), GFP_KERNEL); | |
1456 | if (!buckets) { | |
1457 | kfree(htbl); | |
1458 | return -ENOMEM; | |
1459 | } | |
1460 | htbl->size = size; | |
1461 | htbl->mask = (size - 1); | |
1462 | htbl->buckets = buckets; | |
52374967 | 1463 | RCU_INIT_POINTER(ntbl->htbl, htbl); |
66172c09 | 1464 | htbl->ntbl = ntbl; |
b63b70d8 SP |
1465 | atomic_set(&ntbl->entries, 0); |
1466 | ||
1467 | /* start garbage collection */ | |
1468 | clear_bit(IPOIB_STOP_NEIGH_GC, &priv->flags); | |
0b39578b | 1469 | queue_delayed_work(priv->wq, &priv->neigh_reap_task, |
b63b70d8 | 1470 | arp_tbl.gc_interval); |
1da177e4 LT |
1471 | |
1472 | return 0; | |
1473 | } | |
1474 | ||
b63b70d8 SP |
1475 | static void neigh_hash_free_rcu(struct rcu_head *head) |
1476 | { | |
1477 | struct ipoib_neigh_hash *htbl = container_of(head, | |
1478 | struct ipoib_neigh_hash, | |
1479 | rcu); | |
1480 | struct ipoib_neigh __rcu **buckets = htbl->buckets; | |
66172c09 | 1481 | struct ipoib_neigh_table *ntbl = htbl->ntbl; |
b63b70d8 SP |
1482 | |
1483 | kfree(buckets); | |
1484 | kfree(htbl); | |
66172c09 | 1485 | complete(&ntbl->deleted); |
b63b70d8 SP |
1486 | } |
1487 | ||
1488 | void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid) | |
1489 | { | |
c1048aff | 1490 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
b63b70d8 SP |
1491 | struct ipoib_neigh_table *ntbl = &priv->ntbl; |
1492 | struct ipoib_neigh_hash *htbl; | |
1493 | unsigned long flags; | |
1494 | int i; | |
1495 | ||
1496 | /* remove all neigh connected to a given path or mcast */ | |
b5120a6e | 1497 | spin_lock_irqsave(&priv->lock, flags); |
b63b70d8 SP |
1498 | |
1499 | htbl = rcu_dereference_protected(ntbl->htbl, | |
b5120a6e | 1500 | lockdep_is_held(&priv->lock)); |
b63b70d8 SP |
1501 | |
1502 | if (!htbl) | |
1503 | goto out_unlock; | |
1504 | ||
1505 | for (i = 0; i < htbl->size; i++) { | |
1506 | struct ipoib_neigh *neigh; | |
1507 | struct ipoib_neigh __rcu **np = &htbl->buckets[i]; | |
1508 | ||
1509 | while ((neigh = rcu_dereference_protected(*np, | |
b5120a6e | 1510 | lockdep_is_held(&priv->lock))) != NULL) { |
b63b70d8 SP |
1511 | /* delete neighs belong to this parent */ |
1512 | if (!memcmp(gid, neigh->daddr + 4, sizeof (union ib_gid))) { | |
1513 | rcu_assign_pointer(*np, | |
1514 | rcu_dereference_protected(neigh->hnext, | |
b5120a6e | 1515 | lockdep_is_held(&priv->lock))); |
b63b70d8 | 1516 | /* remove from parent list */ |
c586071d | 1517 | list_del_init(&neigh->list); |
b63b70d8 SP |
1518 | call_rcu(&neigh->rcu, ipoib_neigh_reclaim); |
1519 | } else { | |
1520 | np = &neigh->hnext; | |
1521 | } | |
1522 | ||
1523 | } | |
1524 | } | |
1525 | out_unlock: | |
b5120a6e | 1526 | spin_unlock_irqrestore(&priv->lock, flags); |
b63b70d8 SP |
1527 | } |
1528 | ||
1529 | static void ipoib_flush_neighs(struct ipoib_dev_priv *priv) | |
1530 | { | |
1531 | struct ipoib_neigh_table *ntbl = &priv->ntbl; | |
1532 | struct ipoib_neigh_hash *htbl; | |
1533 | unsigned long flags; | |
66172c09 | 1534 | int i, wait_flushed = 0; |
b63b70d8 | 1535 | |
66172c09 | 1536 | init_completion(&priv->ntbl.flushed); |
b63b70d8 | 1537 | |
b5120a6e | 1538 | spin_lock_irqsave(&priv->lock, flags); |
b63b70d8 SP |
1539 | |
1540 | htbl = rcu_dereference_protected(ntbl->htbl, | |
b5120a6e | 1541 | lockdep_is_held(&priv->lock)); |
b63b70d8 SP |
1542 | if (!htbl) |
1543 | goto out_unlock; | |
1544 | ||
66172c09 SP |
1545 | wait_flushed = atomic_read(&priv->ntbl.entries); |
1546 | if (!wait_flushed) | |
1547 | goto free_htbl; | |
1548 | ||
b63b70d8 SP |
1549 | for (i = 0; i < htbl->size; i++) { |
1550 | struct ipoib_neigh *neigh; | |
1551 | struct ipoib_neigh __rcu **np = &htbl->buckets[i]; | |
1552 | ||
1553 | while ((neigh = rcu_dereference_protected(*np, | |
b5120a6e | 1554 | lockdep_is_held(&priv->lock))) != NULL) { |
b63b70d8 SP |
1555 | rcu_assign_pointer(*np, |
1556 | rcu_dereference_protected(neigh->hnext, | |
b5120a6e | 1557 | lockdep_is_held(&priv->lock))); |
b63b70d8 | 1558 | /* remove from path/mc list */ |
c586071d | 1559 | list_del_init(&neigh->list); |
b63b70d8 SP |
1560 | call_rcu(&neigh->rcu, ipoib_neigh_reclaim); |
1561 | } | |
1562 | } | |
1563 | ||
66172c09 | 1564 | free_htbl: |
b63b70d8 SP |
1565 | rcu_assign_pointer(ntbl->htbl, NULL); |
1566 | call_rcu(&htbl->rcu, neigh_hash_free_rcu); | |
1567 | ||
1568 | out_unlock: | |
b5120a6e | 1569 | spin_unlock_irqrestore(&priv->lock, flags); |
66172c09 SP |
1570 | if (wait_flushed) |
1571 | wait_for_completion(&priv->ntbl.flushed); | |
b63b70d8 SP |
1572 | } |
1573 | ||
1574 | static void ipoib_neigh_hash_uninit(struct net_device *dev) | |
1575 | { | |
c1048aff | 1576 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
b63b70d8 SP |
1577 | int stopped; |
1578 | ||
1579 | ipoib_dbg(priv, "ipoib_neigh_hash_uninit\n"); | |
66172c09 | 1580 | init_completion(&priv->ntbl.deleted); |
b63b70d8 SP |
1581 | set_bit(IPOIB_NEIGH_TBL_FLUSH, &priv->flags); |
1582 | ||
1583 | /* Stop GC if called at init fail need to cancel work */ | |
1584 | stopped = test_and_set_bit(IPOIB_STOP_NEIGH_GC, &priv->flags); | |
1585 | if (!stopped) | |
1586 | cancel_delayed_work(&priv->neigh_reap_task); | |
1587 | ||
66172c09 SP |
1588 | ipoib_flush_neighs(priv); |
1589 | ||
1590 | wait_for_completion(&priv->ntbl.deleted); | |
b63b70d8 SP |
1591 | } |
1592 | ||
0a1a9726 | 1593 | static void ipoib_dev_uninit_default(struct net_device *dev) |
515ed4f3 | 1594 | { |
c1048aff | 1595 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
b63b70d8 | 1596 | |
515ed4f3 ES |
1597 | ipoib_transport_dev_cleanup(dev); |
1598 | ||
b53d4566 AV |
1599 | netif_napi_del(&priv->napi); |
1600 | ||
515ed4f3 ES |
1601 | ipoib_cm_dev_cleanup(dev); |
1602 | ||
1603 | kfree(priv->rx_ring); | |
1604 | vfree(priv->tx_ring); | |
1605 | ||
1606 | priv->rx_ring = NULL; | |
1607 | priv->tx_ring = NULL; | |
1608 | } | |
1609 | ||
cd565b4b | 1610 | static int ipoib_dev_init_default(struct net_device *dev) |
1da177e4 | 1611 | { |
c1048aff | 1612 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
1da177e4 | 1613 | |
cd565b4b ES |
1614 | netif_napi_add(dev, &priv->napi, ipoib_poll, NAPI_POLL_WEIGHT); |
1615 | ||
1da177e4 | 1616 | /* Allocate RX/TX "rings" to hold queued skbs */ |
0f485251 | 1617 | priv->rx_ring = kzalloc(ipoib_recvq_size * sizeof *priv->rx_ring, |
1da177e4 | 1618 | GFP_KERNEL); |
74226649 | 1619 | if (!priv->rx_ring) |
be7aa663 | 1620 | goto out; |
1da177e4 | 1621 | |
948579cd | 1622 | priv->tx_ring = vzalloc(ipoib_sendq_size * sizeof *priv->tx_ring); |
1da177e4 LT |
1623 | if (!priv->tx_ring) { |
1624 | printk(KERN_WARNING "%s: failed to allocate TX ring (%d entries)\n", | |
cd565b4b | 1625 | priv->ca->name, ipoib_sendq_size); |
1da177e4 LT |
1626 | goto out_rx_ring_cleanup; |
1627 | } | |
1da177e4 | 1628 | |
1b524963 | 1629 | /* priv->tx_head, tx_tail & tx_outstanding are already 0 */ |
1da177e4 | 1630 | |
cd565b4b ES |
1631 | if (ipoib_transport_dev_init(dev, priv->ca)) { |
1632 | pr_warn("%s: ipoib_transport_dev_init failed\n", | |
1633 | priv->ca->name); | |
1da177e4 | 1634 | goto out_tx_ring_cleanup; |
515ed4f3 ES |
1635 | } |
1636 | ||
cd565b4b ES |
1637 | /* after qp created set dev address */ |
1638 | priv->dev->dev_addr[1] = (priv->qp->qp_num >> 16) & 0xff; | |
1639 | priv->dev->dev_addr[2] = (priv->qp->qp_num >> 8) & 0xff; | |
1640 | priv->dev->dev_addr[3] = (priv->qp->qp_num) & 0xff; | |
1641 | ||
515ed4f3 ES |
1642 | setup_timer(&priv->poll_timer, ipoib_ib_tx_timer_func, |
1643 | (unsigned long)dev); | |
1644 | ||
1645 | return 0; | |
1646 | ||
1647 | out_tx_ring_cleanup: | |
1648 | vfree(priv->tx_ring); | |
1649 | ||
1650 | out_rx_ring_cleanup: | |
1651 | kfree(priv->rx_ring); | |
1652 | ||
1653 | out: | |
b53d4566 | 1654 | netif_napi_del(&priv->napi); |
515ed4f3 ES |
1655 | return -ENOMEM; |
1656 | } | |
1657 | ||
1658 | int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port) | |
1659 | { | |
c1048aff | 1660 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
515ed4f3 ES |
1661 | int ret = -ENOMEM; |
1662 | ||
1663 | priv->ca = ca; | |
1664 | priv->port = port; | |
1665 | priv->qp = NULL; | |
1da177e4 | 1666 | |
be7aa663 | 1667 | /* |
515ed4f3 ES |
1668 | * the various IPoIB tasks assume they will never race against |
1669 | * themselves, so always use a single thread workqueue | |
be7aa663 | 1670 | */ |
515ed4f3 ES |
1671 | priv->wq = alloc_ordered_workqueue("ipoib_wq", WQ_MEM_RECLAIM); |
1672 | if (!priv->wq) { | |
1673 | pr_warn("%s: failed to allocate device WQ\n", dev->name); | |
1674 | goto out; | |
1675 | } | |
1676 | ||
1677 | /* create pd, which used both for control and datapath*/ | |
1678 | priv->pd = ib_alloc_pd(priv->ca, 0); | |
1679 | if (IS_ERR(priv->pd)) { | |
1680 | pr_warn("%s: failed to allocate PD\n", ca->name); | |
1681 | goto clean_wq; | |
1682 | } | |
1683 | ||
cd565b4b | 1684 | ret = priv->rn_ops->ndo_init(dev); |
515ed4f3 ES |
1685 | if (ret) { |
1686 | pr_warn("%s failed to init HW resource\n", dev->name); | |
1687 | goto out_free_pd; | |
1688 | } | |
1689 | ||
515ed4f3 ES |
1690 | if (ipoib_neigh_hash_init(priv) < 0) { |
1691 | pr_warn("%s failed to init neigh hash\n", dev->name); | |
be7aa663 | 1692 | goto out_dev_uninit; |
515ed4f3 ES |
1693 | } |
1694 | ||
1695 | if (dev->flags & IFF_UP) { | |
1696 | if (ipoib_ib_dev_open(dev)) { | |
1697 | pr_warn("%s failed to open device\n", dev->name); | |
1698 | ret = -ENODEV; | |
1699 | goto out_dev_uninit; | |
1700 | } | |
1701 | } | |
be7aa663 | 1702 | |
1da177e4 LT |
1703 | return 0; |
1704 | ||
be7aa663 DL |
1705 | out_dev_uninit: |
1706 | ipoib_ib_dev_cleanup(dev); | |
1707 | ||
515ed4f3 ES |
1708 | out_free_pd: |
1709 | if (priv->pd) { | |
1710 | ib_dealloc_pd(priv->pd); | |
1711 | priv->pd = NULL; | |
1712 | } | |
1da177e4 | 1713 | |
515ed4f3 ES |
1714 | clean_wq: |
1715 | if (priv->wq) { | |
1716 | destroy_workqueue(priv->wq); | |
1717 | priv->wq = NULL; | |
1718 | } | |
1da177e4 LT |
1719 | |
1720 | out: | |
515ed4f3 | 1721 | return ret; |
1da177e4 LT |
1722 | } |
1723 | ||
1724 | void ipoib_dev_cleanup(struct net_device *dev) | |
1725 | { | |
c1048aff | 1726 | struct ipoib_dev_priv *priv = ipoib_priv(dev), *cpriv, *tcpriv; |
9baa0b03 OG |
1727 | LIST_HEAD(head); |
1728 | ||
1729 | ASSERT_RTNL(); | |
1da177e4 | 1730 | |
1da177e4 LT |
1731 | /* Delete any child interfaces first */ |
1732 | list_for_each_entry_safe(cpriv, tcpriv, &priv->child_intfs, list) { | |
b63b70d8 SP |
1733 | /* Stop GC on child */ |
1734 | set_bit(IPOIB_STOP_NEIGH_GC, &cpriv->flags); | |
1735 | cancel_delayed_work(&cpriv->neigh_reap_task); | |
9baa0b03 | 1736 | unregister_netdevice_queue(cpriv->dev, &head); |
1da177e4 | 1737 | } |
9baa0b03 | 1738 | unregister_netdevice_many(&head); |
1da177e4 | 1739 | |
be7aa663 DL |
1740 | ipoib_neigh_hash_uninit(dev); |
1741 | ||
1da177e4 LT |
1742 | ipoib_ib_dev_cleanup(dev); |
1743 | ||
515ed4f3 ES |
1744 | /* no more works over the priv->wq */ |
1745 | if (priv->wq) { | |
1746 | flush_workqueue(priv->wq); | |
1747 | destroy_workqueue(priv->wq); | |
1748 | priv->wq = NULL; | |
1749 | } | |
1da177e4 LT |
1750 | } |
1751 | ||
9c3c5f8e EC |
1752 | static int ipoib_set_vf_link_state(struct net_device *dev, int vf, int link_state) |
1753 | { | |
c1048aff | 1754 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
9c3c5f8e EC |
1755 | |
1756 | return ib_set_vf_link_state(priv->ca, vf, priv->port, link_state); | |
1757 | } | |
1758 | ||
1759 | static int ipoib_get_vf_config(struct net_device *dev, int vf, | |
1760 | struct ifla_vf_info *ivf) | |
1761 | { | |
c1048aff | 1762 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
9c3c5f8e EC |
1763 | int err; |
1764 | ||
1765 | err = ib_get_vf_config(priv->ca, vf, priv->port, ivf); | |
1766 | if (err) | |
1767 | return err; | |
1768 | ||
1769 | ivf->vf = vf; | |
1770 | ||
1771 | return 0; | |
1772 | } | |
1773 | ||
1774 | static int ipoib_set_vf_guid(struct net_device *dev, int vf, u64 guid, int type) | |
1775 | { | |
c1048aff | 1776 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
9c3c5f8e EC |
1777 | |
1778 | if (type != IFLA_VF_IB_NODE_GUID && type != IFLA_VF_IB_PORT_GUID) | |
1779 | return -EINVAL; | |
1780 | ||
1781 | return ib_set_vf_guid(priv->ca, vf, priv->port, guid, type); | |
1782 | } | |
1783 | ||
1784 | static int ipoib_get_vf_stats(struct net_device *dev, int vf, | |
1785 | struct ifla_vf_stats *vf_stats) | |
1786 | { | |
c1048aff | 1787 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
9c3c5f8e EC |
1788 | |
1789 | return ib_get_vf_stats(priv->ca, vf, priv->port, vf_stats); | |
1790 | } | |
1791 | ||
3b04ddde SH |
1792 | static const struct header_ops ipoib_header_ops = { |
1793 | .create = ipoib_hard_header, | |
1794 | }; | |
1795 | ||
9c3c5f8e EC |
1796 | static const struct net_device_ops ipoib_netdev_ops_pf = { |
1797 | .ndo_uninit = ipoib_uninit, | |
1798 | .ndo_open = ipoib_open, | |
1799 | .ndo_stop = ipoib_stop, | |
1800 | .ndo_change_mtu = ipoib_change_mtu, | |
1801 | .ndo_fix_features = ipoib_fix_features, | |
1802 | .ndo_start_xmit = ipoib_start_xmit, | |
1803 | .ndo_tx_timeout = ipoib_timeout, | |
1804 | .ndo_set_rx_mode = ipoib_set_mcast_list, | |
1805 | .ndo_get_iflink = ipoib_get_iflink, | |
1806 | .ndo_set_vf_link_state = ipoib_set_vf_link_state, | |
1807 | .ndo_get_vf_config = ipoib_get_vf_config, | |
1808 | .ndo_get_vf_stats = ipoib_get_vf_stats, | |
1809 | .ndo_set_vf_guid = ipoib_set_vf_guid, | |
492a7e67 | 1810 | .ndo_set_mac_address = ipoib_set_mac, |
9c3c5f8e EC |
1811 | }; |
1812 | ||
1813 | static const struct net_device_ops ipoib_netdev_ops_vf = { | |
9baa0b03 | 1814 | .ndo_uninit = ipoib_uninit, |
fe8114e8 SH |
1815 | .ndo_open = ipoib_open, |
1816 | .ndo_stop = ipoib_stop, | |
1817 | .ndo_change_mtu = ipoib_change_mtu, | |
3d96c74d | 1818 | .ndo_fix_features = ipoib_fix_features, |
fe8114e8 SH |
1819 | .ndo_start_xmit = ipoib_start_xmit, |
1820 | .ndo_tx_timeout = ipoib_timeout, | |
afc4b13d | 1821 | .ndo_set_rx_mode = ipoib_set_mcast_list, |
5aa7add8 | 1822 | .ndo_get_iflink = ipoib_get_iflink, |
fe8114e8 SH |
1823 | }; |
1824 | ||
cd565b4b | 1825 | void ipoib_setup_common(struct net_device *dev) |
1da177e4 | 1826 | { |
2337f809 | 1827 | dev->header_ops = &ipoib_header_ops; |
bea3348e | 1828 | |
82c24c18 EC |
1829 | ipoib_set_ethtool_ops(dev); |
1830 | ||
2337f809 | 1831 | dev->watchdog_timeo = HZ; |
1da177e4 | 1832 | |
2337f809 | 1833 | dev->flags |= IFF_BROADCAST | IFF_MULTICAST; |
1da177e4 | 1834 | |
fc791b63 | 1835 | dev->hard_header_len = IPOIB_HARD_LEN; |
2337f809 RD |
1836 | dev->addr_len = INFINIBAND_ALEN; |
1837 | dev->type = ARPHRD_INFINIBAND; | |
1838 | dev->tx_queue_len = ipoib_sendq_size * 2; | |
eb14032f | 1839 | dev->features = (NETIF_F_VLAN_CHALLENGED | |
eb14032f | 1840 | NETIF_F_HIGHDMA); |
02875878 | 1841 | netif_keep_dst(dev); |
1da177e4 | 1842 | |
1da177e4 | 1843 | memcpy(dev->broadcast, ipv4_bcast_addr, INFINIBAND_ALEN); |
cd565b4b | 1844 | } |
1da177e4 | 1845 | |
cd565b4b ES |
1846 | static void ipoib_build_priv(struct net_device *dev) |
1847 | { | |
1848 | struct ipoib_dev_priv *priv = ipoib_priv(dev); | |
1da177e4 | 1849 | |
cd565b4b | 1850 | priv->dev = dev; |
1da177e4 | 1851 | spin_lock_init(&priv->lock); |
f47944cc | 1852 | init_rwsem(&priv->vlan_rwsem); |
1da177e4 LT |
1853 | |
1854 | INIT_LIST_HEAD(&priv->path_list); | |
1855 | INIT_LIST_HEAD(&priv->child_intfs); | |
1856 | INIT_LIST_HEAD(&priv->dead_ahs); | |
1857 | INIT_LIST_HEAD(&priv->multicast_list); | |
1858 | ||
c4028958 | 1859 | INIT_DELAYED_WORK(&priv->mcast_task, ipoib_mcast_join_task); |
e8224e4b | 1860 | INIT_WORK(&priv->carrier_on_task, ipoib_mcast_carrier_on_task); |
ee1e2c82 MS |
1861 | INIT_WORK(&priv->flush_light, ipoib_ib_dev_flush_light); |
1862 | INIT_WORK(&priv->flush_normal, ipoib_ib_dev_flush_normal); | |
1863 | INIT_WORK(&priv->flush_heavy, ipoib_ib_dev_flush_heavy); | |
c4028958 DH |
1864 | INIT_WORK(&priv->restart_task, ipoib_mcast_restart_task); |
1865 | INIT_DELAYED_WORK(&priv->ah_reap_task, ipoib_reap_ah); | |
b63b70d8 | 1866 | INIT_DELAYED_WORK(&priv->neigh_reap_task, ipoib_reap_neigh); |
1da177e4 LT |
1867 | } |
1868 | ||
cd565b4b ES |
1869 | static const struct net_device_ops ipoib_netdev_default_pf = { |
1870 | .ndo_init = ipoib_dev_init_default, | |
1871 | .ndo_uninit = ipoib_dev_uninit_default, | |
1872 | .ndo_open = ipoib_ib_dev_open_default, | |
1873 | .ndo_stop = ipoib_ib_dev_stop_default, | |
1874 | }; | |
1875 | ||
1876 | static struct net_device | |
1877 | *ipoib_create_netdev_default(struct ib_device *hca, | |
1878 | const char *name, | |
1879 | unsigned char name_assign_type, | |
1880 | void (*setup)(struct net_device *)) | |
1da177e4 LT |
1881 | { |
1882 | struct net_device *dev; | |
cd565b4b | 1883 | struct rdma_netdev *rn; |
1da177e4 | 1884 | |
cd565b4b ES |
1885 | dev = alloc_netdev((int)sizeof(struct rdma_netdev), |
1886 | name, | |
1887 | name_assign_type, setup); | |
1da177e4 LT |
1888 | if (!dev) |
1889 | return NULL; | |
1890 | ||
cd565b4b ES |
1891 | rn = netdev_priv(dev); |
1892 | ||
1893 | rn->send = ipoib_send; | |
1894 | rn->attach_mcast = ipoib_mcast_attach; | |
1895 | rn->detach_mcast = ipoib_mcast_detach; | |
1896 | rn->hca = hca; | |
1897 | ||
1898 | dev->netdev_ops = &ipoib_netdev_default_pf; | |
1899 | ||
1900 | return dev; | |
1901 | } | |
1902 | ||
1903 | static struct net_device *ipoib_get_netdev(struct ib_device *hca, u8 port, | |
1904 | const char *name) | |
1905 | { | |
1906 | struct net_device *dev; | |
1907 | ||
1908 | if (hca->alloc_rdma_netdev) { | |
1909 | dev = hca->alloc_rdma_netdev(hca, port, | |
1910 | RDMA_NETDEV_IPOIB, name, | |
1911 | NET_NAME_UNKNOWN, | |
1912 | ipoib_setup_common); | |
1913 | if (IS_ERR_OR_NULL(dev) && PTR_ERR(dev) != -EOPNOTSUPP) | |
1914 | return NULL; | |
1915 | } | |
1916 | ||
1917 | if (!hca->alloc_rdma_netdev || PTR_ERR(dev) == -EOPNOTSUPP) | |
1918 | dev = ipoib_create_netdev_default(hca, name, NET_NAME_UNKNOWN, | |
1919 | ipoib_setup_common); | |
1920 | ||
1921 | return dev; | |
1922 | } | |
1923 | ||
1924 | struct ipoib_dev_priv *ipoib_intf_alloc(struct ib_device *hca, u8 port, | |
1925 | const char *name) | |
1926 | { | |
1927 | struct net_device *dev; | |
1928 | struct ipoib_dev_priv *priv; | |
1929 | struct rdma_netdev *rn; | |
1930 | ||
1931 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
1932 | if (!priv) | |
1933 | return NULL; | |
1934 | ||
1935 | dev = ipoib_get_netdev(hca, port, name); | |
1936 | if (!dev) | |
1937 | goto free_priv; | |
1938 | ||
1939 | priv->rn_ops = dev->netdev_ops; | |
1940 | ||
1941 | /* fixme : should be after the query_cap */ | |
1942 | if (priv->hca_caps & IB_DEVICE_VIRTUAL_FUNCTION) | |
1943 | dev->netdev_ops = &ipoib_netdev_ops_vf; | |
1944 | else | |
1945 | dev->netdev_ops = &ipoib_netdev_ops_pf; | |
1946 | ||
1947 | rn = netdev_priv(dev); | |
1948 | rn->clnt_priv = priv; | |
1949 | ipoib_build_priv(dev); | |
1950 | ||
1951 | return priv; | |
1952 | free_priv: | |
1953 | kfree(priv); | |
1954 | return NULL; | |
1da177e4 LT |
1955 | } |
1956 | ||
43cb76d9 GKH |
1957 | static ssize_t show_pkey(struct device *dev, |
1958 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1959 | { |
c1048aff ES |
1960 | struct net_device *ndev = to_net_dev(dev); |
1961 | struct ipoib_dev_priv *priv = ipoib_priv(ndev); | |
1da177e4 LT |
1962 | |
1963 | return sprintf(buf, "0x%04x\n", priv->pkey); | |
1964 | } | |
43cb76d9 | 1965 | static DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL); |
1da177e4 | 1966 | |
335a64a5 OG |
1967 | static ssize_t show_umcast(struct device *dev, |
1968 | struct device_attribute *attr, char *buf) | |
1969 | { | |
c1048aff ES |
1970 | struct net_device *ndev = to_net_dev(dev); |
1971 | struct ipoib_dev_priv *priv = ipoib_priv(ndev); | |
335a64a5 OG |
1972 | |
1973 | return sprintf(buf, "%d\n", test_bit(IPOIB_FLAG_UMCAST, &priv->flags)); | |
1974 | } | |
1975 | ||
862096a8 | 1976 | void ipoib_set_umcast(struct net_device *ndev, int umcast_val) |
335a64a5 | 1977 | { |
c1048aff | 1978 | struct ipoib_dev_priv *priv = ipoib_priv(ndev); |
335a64a5 OG |
1979 | |
1980 | if (umcast_val > 0) { | |
1981 | set_bit(IPOIB_FLAG_UMCAST, &priv->flags); | |
1982 | ipoib_warn(priv, "ignoring multicast groups joined directly " | |
1983 | "by userspace\n"); | |
1984 | } else | |
1985 | clear_bit(IPOIB_FLAG_UMCAST, &priv->flags); | |
862096a8 OG |
1986 | } |
1987 | ||
1988 | static ssize_t set_umcast(struct device *dev, | |
1989 | struct device_attribute *attr, | |
1990 | const char *buf, size_t count) | |
1991 | { | |
1992 | unsigned long umcast_val = simple_strtoul(buf, NULL, 0); | |
1993 | ||
1994 | ipoib_set_umcast(to_net_dev(dev), umcast_val); | |
335a64a5 OG |
1995 | |
1996 | return count; | |
1997 | } | |
1998 | static DEVICE_ATTR(umcast, S_IWUSR | S_IRUGO, show_umcast, set_umcast); | |
1999 | ||
2000 | int ipoib_add_umcast_attr(struct net_device *dev) | |
2001 | { | |
2002 | return device_create_file(&dev->dev, &dev_attr_umcast); | |
2003 | } | |
2004 | ||
492a7e67 MB |
2005 | static void set_base_guid(struct ipoib_dev_priv *priv, union ib_gid *gid) |
2006 | { | |
2007 | struct ipoib_dev_priv *child_priv; | |
2008 | struct net_device *netdev = priv->dev; | |
2009 | ||
9b29953b | 2010 | netif_addr_lock_bh(netdev); |
492a7e67 MB |
2011 | |
2012 | memcpy(&priv->local_gid.global.interface_id, | |
2013 | &gid->global.interface_id, | |
2014 | sizeof(gid->global.interface_id)); | |
2015 | memcpy(netdev->dev_addr + 4, &priv->local_gid, sizeof(priv->local_gid)); | |
2016 | clear_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags); | |
2017 | ||
9b29953b | 2018 | netif_addr_unlock_bh(netdev); |
492a7e67 MB |
2019 | |
2020 | if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) { | |
2021 | down_read(&priv->vlan_rwsem); | |
2022 | list_for_each_entry(child_priv, &priv->child_intfs, list) | |
2023 | set_base_guid(child_priv, gid); | |
2024 | up_read(&priv->vlan_rwsem); | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | static int ipoib_check_lladdr(struct net_device *dev, | |
2029 | struct sockaddr_storage *ss) | |
2030 | { | |
2031 | union ib_gid *gid = (union ib_gid *)(ss->__data + 4); | |
2032 | int ret = 0; | |
2033 | ||
9b29953b | 2034 | netif_addr_lock_bh(dev); |
492a7e67 MB |
2035 | |
2036 | /* Make sure the QPN, reserved and subnet prefix match the current | |
2037 | * lladdr, it also makes sure the lladdr is unicast. | |
2038 | */ | |
2039 | if (memcmp(dev->dev_addr, ss->__data, | |
2040 | 4 + sizeof(gid->global.subnet_prefix)) || | |
2041 | gid->global.interface_id == 0) | |
2042 | ret = -EINVAL; | |
2043 | ||
9b29953b | 2044 | netif_addr_unlock_bh(dev); |
492a7e67 MB |
2045 | |
2046 | return ret; | |
2047 | } | |
2048 | ||
2049 | static int ipoib_set_mac(struct net_device *dev, void *addr) | |
2050 | { | |
c1048aff | 2051 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
492a7e67 MB |
2052 | struct sockaddr_storage *ss = addr; |
2053 | int ret; | |
2054 | ||
2055 | if (!(dev->priv_flags & IFF_LIVE_ADDR_CHANGE) && netif_running(dev)) | |
2056 | return -EBUSY; | |
2057 | ||
2058 | ret = ipoib_check_lladdr(dev, ss); | |
2059 | if (ret) | |
2060 | return ret; | |
2061 | ||
2062 | set_base_guid(priv, (union ib_gid *)(ss->__data + 4)); | |
2063 | ||
2064 | queue_work(ipoib_workqueue, &priv->flush_light); | |
2065 | ||
2066 | return 0; | |
2067 | } | |
2068 | ||
43cb76d9 GKH |
2069 | static ssize_t create_child(struct device *dev, |
2070 | struct device_attribute *attr, | |
1da177e4 LT |
2071 | const char *buf, size_t count) |
2072 | { | |
2073 | int pkey; | |
2074 | int ret; | |
2075 | ||
2076 | if (sscanf(buf, "%i", &pkey) != 1) | |
2077 | return -EINVAL; | |
2078 | ||
3d790a4c | 2079 | if (pkey <= 0 || pkey > 0xffff || pkey == 0x8000) |
1da177e4 LT |
2080 | return -EINVAL; |
2081 | ||
4ce05937 RD |
2082 | /* |
2083 | * Set the full membership bit, so that we join the right | |
2084 | * broadcast group, etc. | |
2085 | */ | |
2086 | pkey |= 0x8000; | |
2087 | ||
43cb76d9 | 2088 | ret = ipoib_vlan_add(to_net_dev(dev), pkey); |
1da177e4 LT |
2089 | |
2090 | return ret ? ret : count; | |
2091 | } | |
7a52b34b | 2092 | static DEVICE_ATTR(create_child, S_IWUSR, NULL, create_child); |
1da177e4 | 2093 | |
43cb76d9 GKH |
2094 | static ssize_t delete_child(struct device *dev, |
2095 | struct device_attribute *attr, | |
1da177e4 LT |
2096 | const char *buf, size_t count) |
2097 | { | |
2098 | int pkey; | |
2099 | int ret; | |
2100 | ||
2101 | if (sscanf(buf, "%i", &pkey) != 1) | |
2102 | return -EINVAL; | |
2103 | ||
2104 | if (pkey < 0 || pkey > 0xffff) | |
2105 | return -EINVAL; | |
2106 | ||
43cb76d9 | 2107 | ret = ipoib_vlan_delete(to_net_dev(dev), pkey); |
1da177e4 LT |
2108 | |
2109 | return ret ? ret : count; | |
2110 | ||
2111 | } | |
7a52b34b | 2112 | static DEVICE_ATTR(delete_child, S_IWUSR, NULL, delete_child); |
1da177e4 LT |
2113 | |
2114 | int ipoib_add_pkey_attr(struct net_device *dev) | |
2115 | { | |
43cb76d9 | 2116 | return device_create_file(&dev->dev, &dev_attr_pkey); |
1da177e4 LT |
2117 | } |
2118 | ||
f7534f45 | 2119 | void ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca) |
83bb63f6 | 2120 | { |
4a061b28 | 2121 | priv->hca_caps = hca->attrs.device_cap_flags; |
83bb63f6 OG |
2122 | |
2123 | if (priv->hca_caps & IB_DEVICE_UD_IP_CSUM) { | |
cd565b4b | 2124 | priv->dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM; |
83bb63f6 | 2125 | |
3d96c74d MM |
2126 | if (priv->hca_caps & IB_DEVICE_UD_TSO) |
2127 | priv->dev->hw_features |= NETIF_F_TSO; | |
8ae31e5b | 2128 | |
3d96c74d MM |
2129 | priv->dev->features |= priv->dev->hw_features; |
2130 | } | |
83bb63f6 OG |
2131 | } |
2132 | ||
1da177e4 LT |
2133 | static struct net_device *ipoib_add_port(const char *format, |
2134 | struct ib_device *hca, u8 port) | |
2135 | { | |
2136 | struct ipoib_dev_priv *priv; | |
bc7b3a36 | 2137 | struct ib_port_attr attr; |
1da177e4 LT |
2138 | int result = -ENOMEM; |
2139 | ||
cd565b4b | 2140 | priv = ipoib_intf_alloc(hca, port, format); |
1da177e4 LT |
2141 | if (!priv) |
2142 | goto alloc_mem_failed; | |
2143 | ||
db97ed0a | 2144 | SET_NETDEV_DEV(priv->dev, hca->dev.parent); |
c3aa9b18 | 2145 | priv->dev->dev_id = port - 1; |
1da177e4 | 2146 | |
58e9cc90 AV |
2147 | result = ib_query_port(hca, port, &attr); |
2148 | if (!result) | |
bc7b3a36 SM |
2149 | priv->max_ib_mtu = ib_mtu_enum_to_int(attr.max_mtu); |
2150 | else { | |
2151 | printk(KERN_WARNING "%s: ib_query_port %d failed\n", | |
2152 | hca->name, port); | |
2153 | goto device_init_failed; | |
2154 | } | |
2155 | ||
2156 | /* MTU will be reset when mcast join happens */ | |
2157 | priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu); | |
2158 | priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu; | |
b3e3893e | 2159 | priv->dev->max_mtu = IPOIB_CM_MTU; |
bc7b3a36 | 2160 | |
596b9b68 DM |
2161 | priv->dev->neigh_priv_len = sizeof(struct ipoib_neigh); |
2162 | ||
1da177e4 LT |
2163 | result = ib_query_pkey(hca, port, 0, &priv->pkey); |
2164 | if (result) { | |
2165 | printk(KERN_WARNING "%s: ib_query_pkey port %d failed (ret = %d)\n", | |
2166 | hca->name, port, result); | |
ca6de177 | 2167 | goto device_init_failed; |
1da177e4 LT |
2168 | } |
2169 | ||
f7534f45 | 2170 | ipoib_set_dev_features(priv, hca); |
af40da89 | 2171 | |
4ce05937 RD |
2172 | /* |
2173 | * Set the full membership bit, so that we join the right | |
2174 | * broadcast group, etc. | |
2175 | */ | |
2176 | priv->pkey |= 0x8000; | |
2177 | ||
1da177e4 LT |
2178 | priv->dev->broadcast[8] = priv->pkey >> 8; |
2179 | priv->dev->broadcast[9] = priv->pkey & 0xff; | |
2180 | ||
55ee3ab2 | 2181 | result = ib_query_gid(hca, port, 0, &priv->local_gid, NULL); |
1da177e4 LT |
2182 | if (result) { |
2183 | printk(KERN_WARNING "%s: ib_query_gid port %d failed (ret = %d)\n", | |
2184 | hca->name, port, result); | |
ca6de177 | 2185 | goto device_init_failed; |
1da177e4 LT |
2186 | } else |
2187 | memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid)); | |
492a7e67 | 2188 | set_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags); |
1da177e4 | 2189 | |
1da177e4 LT |
2190 | result = ipoib_dev_init(priv->dev, hca, port); |
2191 | if (result < 0) { | |
2192 | printk(KERN_WARNING "%s: failed to initialize port %d (ret = %d)\n", | |
2193 | hca->name, port, result); | |
2194 | goto device_init_failed; | |
2195 | } | |
2196 | ||
2197 | INIT_IB_EVENT_HANDLER(&priv->event_handler, | |
2198 | priv->ca, ipoib_event); | |
2199 | result = ib_register_event_handler(&priv->event_handler); | |
2200 | if (result < 0) { | |
2201 | printk(KERN_WARNING "%s: ib_register_event_handler failed for " | |
2202 | "port %d (ret = %d)\n", | |
2203 | hca->name, port, result); | |
2204 | goto event_failed; | |
2205 | } | |
2206 | ||
2207 | result = register_netdev(priv->dev); | |
2208 | if (result) { | |
2209 | printk(KERN_WARNING "%s: couldn't register ipoib port %d; error %d\n", | |
2210 | hca->name, port, result); | |
2211 | goto register_failed; | |
2212 | } | |
2213 | ||
839fcaba MT |
2214 | if (ipoib_cm_add_mode_attr(priv->dev)) |
2215 | goto sysfs_failed; | |
1da177e4 LT |
2216 | if (ipoib_add_pkey_attr(priv->dev)) |
2217 | goto sysfs_failed; | |
335a64a5 OG |
2218 | if (ipoib_add_umcast_attr(priv->dev)) |
2219 | goto sysfs_failed; | |
43cb76d9 | 2220 | if (device_create_file(&priv->dev->dev, &dev_attr_create_child)) |
1da177e4 | 2221 | goto sysfs_failed; |
43cb76d9 | 2222 | if (device_create_file(&priv->dev->dev, &dev_attr_delete_child)) |
1da177e4 LT |
2223 | goto sysfs_failed; |
2224 | ||
2225 | return priv->dev; | |
2226 | ||
2227 | sysfs_failed: | |
1da177e4 LT |
2228 | unregister_netdev(priv->dev); |
2229 | ||
2230 | register_failed: | |
2231 | ib_unregister_event_handler(&priv->event_handler); | |
0b39578b | 2232 | flush_workqueue(ipoib_workqueue); |
b63b70d8 SP |
2233 | /* Stop GC if started before flush */ |
2234 | set_bit(IPOIB_STOP_NEIGH_GC, &priv->flags); | |
2235 | cancel_delayed_work(&priv->neigh_reap_task); | |
0b39578b | 2236 | flush_workqueue(priv->wq); |
1da177e4 LT |
2237 | |
2238 | event_failed: | |
2239 | ipoib_dev_cleanup(priv->dev); | |
2240 | ||
2241 | device_init_failed: | |
2242 | free_netdev(priv->dev); | |
ab156afd | 2243 | kfree(priv); |
1da177e4 LT |
2244 | |
2245 | alloc_mem_failed: | |
2246 | return ERR_PTR(result); | |
2247 | } | |
2248 | ||
2249 | static void ipoib_add_one(struct ib_device *device) | |
2250 | { | |
2251 | struct list_head *dev_list; | |
2252 | struct net_device *dev; | |
2253 | struct ipoib_dev_priv *priv; | |
4139032b | 2254 | int p; |
8e37ab68 | 2255 | int count = 0; |
07ebafba | 2256 | |
1da177e4 LT |
2257 | dev_list = kmalloc(sizeof *dev_list, GFP_KERNEL); |
2258 | if (!dev_list) | |
2259 | return; | |
2260 | ||
2261 | INIT_LIST_HEAD(dev_list); | |
2262 | ||
4139032b | 2263 | for (p = rdma_start_port(device); p <= rdma_end_port(device); ++p) { |
8e37ab68 | 2264 | if (!rdma_protocol_ib(device, p)) |
7b4c8769 | 2265 | continue; |
1da177e4 LT |
2266 | dev = ipoib_add_port("ib%d", device, p); |
2267 | if (!IS_ERR(dev)) { | |
c1048aff | 2268 | priv = ipoib_priv(dev); |
1da177e4 | 2269 | list_add_tail(&priv->list, dev_list); |
8e37ab68 | 2270 | count++; |
1da177e4 LT |
2271 | } |
2272 | } | |
2273 | ||
8e37ab68 MW |
2274 | if (!count) { |
2275 | kfree(dev_list); | |
2276 | return; | |
2277 | } | |
2278 | ||
1da177e4 LT |
2279 | ib_set_client_data(device, &ipoib_client, dev_list); |
2280 | } | |
2281 | ||
7c1eb45a | 2282 | static void ipoib_remove_one(struct ib_device *device, void *client_data) |
1da177e4 | 2283 | { |
ab156afd | 2284 | struct ipoib_dev_priv *priv, *tmp, *cpriv, *tcpriv; |
7c1eb45a | 2285 | struct list_head *dev_list = client_data; |
1da177e4 | 2286 | |
5a2815f0 IG |
2287 | if (!dev_list) |
2288 | return; | |
1da177e4 LT |
2289 | |
2290 | list_for_each_entry_safe(priv, tmp, dev_list, list) { | |
2291 | ib_unregister_event_handler(&priv->event_handler); | |
0b39578b | 2292 | flush_workqueue(ipoib_workqueue); |
a77a57a1 | 2293 | |
198b12f7 ES |
2294 | /* mark interface in the middle of destruction */ |
2295 | set_bit(IPOIB_FLAG_GOING_DOWN, &priv->flags); | |
2296 | ||
a77a57a1 RD |
2297 | rtnl_lock(); |
2298 | dev_change_flags(priv->dev, priv->dev->flags & ~IFF_UP); | |
2299 | rtnl_unlock(); | |
2300 | ||
b63b70d8 SP |
2301 | /* Stop GC */ |
2302 | set_bit(IPOIB_STOP_NEIGH_GC, &priv->flags); | |
2303 | cancel_delayed_work(&priv->neigh_reap_task); | |
0b39578b | 2304 | flush_workqueue(priv->wq); |
1da177e4 LT |
2305 | |
2306 | unregister_netdev(priv->dev); | |
022d038a AV |
2307 | if (device->free_rdma_netdev) |
2308 | device->free_rdma_netdev(priv->dev); | |
2309 | else | |
2310 | free_netdev(priv->dev); | |
ab156afd AV |
2311 | |
2312 | list_for_each_entry_safe(cpriv, tcpriv, &priv->child_intfs, list) | |
2313 | kfree(cpriv); | |
2314 | ||
cd565b4b | 2315 | kfree(priv); |
1da177e4 | 2316 | } |
06c56e44 MT |
2317 | |
2318 | kfree(dev_list); | |
1da177e4 LT |
2319 | } |
2320 | ||
771a5258 SR |
2321 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
2322 | static struct notifier_block ipoib_netdev_notifier = { | |
2323 | .notifier_call = ipoib_netdev_event, | |
2324 | }; | |
2325 | #endif | |
2326 | ||
1da177e4 LT |
2327 | static int __init ipoib_init_module(void) |
2328 | { | |
2329 | int ret; | |
2330 | ||
0f485251 SM |
2331 | ipoib_recvq_size = roundup_pow_of_two(ipoib_recvq_size); |
2332 | ipoib_recvq_size = min(ipoib_recvq_size, IPOIB_MAX_QUEUE_SIZE); | |
2333 | ipoib_recvq_size = max(ipoib_recvq_size, IPOIB_MIN_QUEUE_SIZE); | |
2334 | ||
2335 | ipoib_sendq_size = roundup_pow_of_two(ipoib_sendq_size); | |
2336 | ipoib_sendq_size = min(ipoib_sendq_size, IPOIB_MAX_QUEUE_SIZE); | |
732eacc0 | 2337 | ipoib_sendq_size = max3(ipoib_sendq_size, 2 * MAX_SEND_CQE, IPOIB_MIN_QUEUE_SIZE); |
68e995a2 PS |
2338 | #ifdef CONFIG_INFINIBAND_IPOIB_CM |
2339 | ipoib_max_conn_qp = min(ipoib_max_conn_qp, IPOIB_CM_MAX_CONN_QP); | |
2340 | #endif | |
0f485251 | 2341 | |
f89271da EC |
2342 | /* |
2343 | * When copying small received packets, we only copy from the | |
2344 | * linear data part of the SKB, so we rely on this condition. | |
2345 | */ | |
2346 | BUILD_BUG_ON(IPOIB_CM_COPYBREAK > IPOIB_CM_HEAD_SIZE); | |
2347 | ||
1da177e4 LT |
2348 | ret = ipoib_register_debugfs(); |
2349 | if (ret) | |
2350 | return ret; | |
2351 | ||
2352 | /* | |
0b39578b DL |
2353 | * We create a global workqueue here that is used for all flush |
2354 | * operations. However, if you attempt to flush a workqueue | |
2355 | * from a task on that same workqueue, it deadlocks the system. | |
2356 | * We want to be able to flush the tasks associated with a | |
2357 | * specific net device, so we also create a workqueue for each | |
2358 | * netdevice. We queue up the tasks for that device only on | |
2359 | * its private workqueue, and we only queue up flush events | |
2360 | * on our global flush workqueue. This avoids the deadlocks. | |
1da177e4 | 2361 | */ |
855cda68 BS |
2362 | ipoib_workqueue = alloc_ordered_workqueue("ipoib_flush", |
2363 | WQ_MEM_RECLAIM); | |
1da177e4 LT |
2364 | if (!ipoib_workqueue) { |
2365 | ret = -ENOMEM; | |
2366 | goto err_fs; | |
2367 | } | |
2368 | ||
c1a0b23b MT |
2369 | ib_sa_register_client(&ipoib_sa_client); |
2370 | ||
1da177e4 LT |
2371 | ret = ib_register_client(&ipoib_client); |
2372 | if (ret) | |
c1a0b23b | 2373 | goto err_sa; |
1da177e4 | 2374 | |
9baa0b03 OG |
2375 | ret = ipoib_netlink_init(); |
2376 | if (ret) | |
2377 | goto err_client; | |
2378 | ||
771a5258 SR |
2379 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
2380 | register_netdevice_notifier(&ipoib_netdev_notifier); | |
2381 | #endif | |
1da177e4 LT |
2382 | return 0; |
2383 | ||
9baa0b03 OG |
2384 | err_client: |
2385 | ib_unregister_client(&ipoib_client); | |
2386 | ||
c1a0b23b MT |
2387 | err_sa: |
2388 | ib_sa_unregister_client(&ipoib_sa_client); | |
1da177e4 LT |
2389 | destroy_workqueue(ipoib_workqueue); |
2390 | ||
9adec1a8 RD |
2391 | err_fs: |
2392 | ipoib_unregister_debugfs(); | |
2393 | ||
1da177e4 LT |
2394 | return ret; |
2395 | } | |
2396 | ||
2397 | static void __exit ipoib_cleanup_module(void) | |
2398 | { | |
771a5258 SR |
2399 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
2400 | unregister_netdevice_notifier(&ipoib_netdev_notifier); | |
2401 | #endif | |
9baa0b03 | 2402 | ipoib_netlink_fini(); |
1da177e4 | 2403 | ib_unregister_client(&ipoib_client); |
c1a0b23b | 2404 | ib_sa_unregister_client(&ipoib_sa_client); |
9adec1a8 | 2405 | ipoib_unregister_debugfs(); |
1da177e4 LT |
2406 | destroy_workqueue(ipoib_workqueue); |
2407 | } | |
2408 | ||
2409 | module_init(ipoib_init_module); | |
2410 | module_exit(ipoib_cleanup_module); |