Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. | |
2a1d9b7f RD |
3 | * Copyright (c) 2005 Intel Corporation. All rights reserved. |
4 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. | |
5 | * Copyright (c) 2005 Voltaire, Inc. All rights reserved. | |
1da177e4 LT |
6 | * |
7 | * This software is available to you under a choice of one of two | |
8 | * licenses. You may choose to be licensed under the terms of the GNU | |
9 | * General Public License (GPL) Version 2, available from the file | |
10 | * COPYING in the main directory of this source tree, or the | |
11 | * OpenIB.org BSD license below: | |
12 | * | |
13 | * Redistribution and use in source and binary forms, with or | |
14 | * without modification, are permitted provided that the following | |
15 | * conditions are met: | |
16 | * | |
17 | * - Redistributions of source code must retain the above | |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer. | |
20 | * | |
21 | * - Redistributions in binary form must reproduce the above | |
22 | * copyright notice, this list of conditions and the following | |
23 | * disclaimer in the documentation and/or other materials | |
24 | * provided with the distribution. | |
25 | * | |
26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
33 | * SOFTWARE. | |
1da177e4 LT |
34 | */ |
35 | ||
1da177e4 LT |
36 | #include <linux/module.h> |
37 | #include <linux/errno.h> | |
38 | #include <linux/slab.h> | |
e8edc6e0 | 39 | #include <linux/workqueue.h> |
03db3a2d MB |
40 | #include <linux/netdevice.h> |
41 | #include <net/addrconf.h> | |
1da177e4 | 42 | |
a4d61e84 | 43 | #include <rdma/ib_cache.h> |
1da177e4 LT |
44 | |
45 | #include "core_priv.h" | |
46 | ||
47 | struct ib_pkey_cache { | |
48 | int table_len; | |
49 | u16 table[0]; | |
50 | }; | |
51 | ||
1da177e4 LT |
52 | struct ib_update_work { |
53 | struct work_struct work; | |
54 | struct ib_device *device; | |
55 | u8 port_num; | |
56 | }; | |
57 | ||
e26be1bf MS |
58 | union ib_gid zgid; |
59 | EXPORT_SYMBOL(zgid); | |
03db3a2d MB |
60 | |
61 | static const struct ib_gid_attr zattr; | |
62 | ||
63 | enum gid_attr_find_mask { | |
64 | GID_ATTR_FIND_MASK_GID = 1UL << 0, | |
65 | GID_ATTR_FIND_MASK_NETDEV = 1UL << 1, | |
66 | GID_ATTR_FIND_MASK_DEFAULT = 1UL << 2, | |
b39ffa1d | 67 | GID_ATTR_FIND_MASK_GID_TYPE = 1UL << 3, |
03db3a2d MB |
68 | }; |
69 | ||
70 | enum gid_table_entry_props { | |
71 | GID_TABLE_ENTRY_INVALID = 1UL << 0, | |
72 | GID_TABLE_ENTRY_DEFAULT = 1UL << 1, | |
73 | }; | |
74 | ||
75 | enum gid_table_write_action { | |
76 | GID_TABLE_WRITE_ACTION_ADD, | |
77 | GID_TABLE_WRITE_ACTION_DEL, | |
78 | /* MODIFY only updates the GID table. Currently only used by | |
79 | * ib_cache_update. | |
80 | */ | |
81 | GID_TABLE_WRITE_ACTION_MODIFY | |
82 | }; | |
83 | ||
84 | struct ib_gid_table_entry { | |
03db3a2d MB |
85 | unsigned long props; |
86 | union ib_gid gid; | |
87 | struct ib_gid_attr attr; | |
88 | void *context; | |
89 | }; | |
90 | ||
91 | struct ib_gid_table { | |
92 | int sz; | |
93 | /* In RoCE, adding a GID to the table requires: | |
94 | * (a) Find if this GID is already exists. | |
95 | * (b) Find a free space. | |
96 | * (c) Write the new GID | |
97 | * | |
98 | * Delete requires different set of operations: | |
99 | * (a) Find the GID | |
100 | * (b) Delete it. | |
101 | * | |
102 | * Add/delete should be carried out atomically. | |
103 | * This is done by locking this mutex from multiple | |
104 | * writers. We don't need this lock for IB, as the MAD | |
105 | * layer replaces all entries. All data_vec entries | |
106 | * are locked by this lock. | |
107 | **/ | |
108 | struct mutex lock; | |
9c584f04 MB |
109 | /* This lock protects the table entries from being |
110 | * read and written simultaneously. | |
111 | */ | |
112 | rwlock_t rwlock; | |
03db3a2d MB |
113 | struct ib_gid_table_entry *data_vec; |
114 | }; | |
115 | ||
f3906bd3 MB |
116 | static void dispatch_gid_change_event(struct ib_device *ib_dev, u8 port) |
117 | { | |
118 | if (rdma_cap_roce_gid_table(ib_dev, port)) { | |
119 | struct ib_event event; | |
120 | ||
121 | event.device = ib_dev; | |
122 | event.element.port_num = port; | |
123 | event.event = IB_EVENT_GID_CHANGE; | |
124 | ||
125 | ib_dispatch_event(&event); | |
126 | } | |
127 | } | |
128 | ||
b39ffa1d MB |
129 | static const char * const gid_type_str[] = { |
130 | [IB_GID_TYPE_IB] = "IB/RoCE v1", | |
7766a99f | 131 | [IB_GID_TYPE_ROCE_UDP_ENCAP] = "RoCE v2", |
b39ffa1d MB |
132 | }; |
133 | ||
134 | const char *ib_cache_gid_type_str(enum ib_gid_type gid_type) | |
135 | { | |
136 | if (gid_type < ARRAY_SIZE(gid_type_str) && gid_type_str[gid_type]) | |
137 | return gid_type_str[gid_type]; | |
138 | ||
139 | return "Invalid GID type"; | |
140 | } | |
141 | EXPORT_SYMBOL(ib_cache_gid_type_str); | |
142 | ||
045959db MB |
143 | int ib_cache_gid_parse_type_str(const char *buf) |
144 | { | |
145 | unsigned int i; | |
146 | size_t len; | |
147 | int err = -EINVAL; | |
148 | ||
149 | len = strlen(buf); | |
150 | if (len == 0) | |
151 | return -EINVAL; | |
152 | ||
153 | if (buf[len - 1] == '\n') | |
154 | len--; | |
155 | ||
156 | for (i = 0; i < ARRAY_SIZE(gid_type_str); ++i) | |
157 | if (gid_type_str[i] && !strncmp(buf, gid_type_str[i], len) && | |
158 | len == strlen(gid_type_str[i])) { | |
159 | err = i; | |
160 | break; | |
161 | } | |
162 | ||
163 | return err; | |
164 | } | |
165 | EXPORT_SYMBOL(ib_cache_gid_parse_type_str); | |
166 | ||
9c584f04 MB |
167 | /* This function expects that rwlock will be write locked in all |
168 | * scenarios and that lock will be locked in sleep-able (RoCE) | |
169 | * scenarios. | |
170 | */ | |
03db3a2d MB |
171 | static int write_gid(struct ib_device *ib_dev, u8 port, |
172 | struct ib_gid_table *table, int ix, | |
173 | const union ib_gid *gid, | |
174 | const struct ib_gid_attr *attr, | |
175 | enum gid_table_write_action action, | |
176 | bool default_gid) | |
2e2cdace | 177 | __releases(&table->rwlock) __acquires(&table->rwlock) |
1da177e4 | 178 | { |
03db3a2d MB |
179 | int ret = 0; |
180 | struct net_device *old_net_dev; | |
8e787646 | 181 | enum ib_gid_type old_gid_type; |
03db3a2d MB |
182 | |
183 | /* in rdma_cap_roce_gid_table, this funciton should be protected by a | |
184 | * sleep-able lock. | |
185 | */ | |
03db3a2d MB |
186 | |
187 | if (rdma_cap_roce_gid_table(ib_dev, port)) { | |
188 | table->data_vec[ix].props |= GID_TABLE_ENTRY_INVALID; | |
9c584f04 | 189 | write_unlock_irq(&table->rwlock); |
03db3a2d MB |
190 | /* GID_TABLE_WRITE_ACTION_MODIFY currently isn't supported by |
191 | * RoCE providers and thus only updates the cache. | |
192 | */ | |
193 | if (action == GID_TABLE_WRITE_ACTION_ADD) | |
194 | ret = ib_dev->add_gid(ib_dev, port, ix, gid, attr, | |
195 | &table->data_vec[ix].context); | |
196 | else if (action == GID_TABLE_WRITE_ACTION_DEL) | |
197 | ret = ib_dev->del_gid(ib_dev, port, ix, | |
198 | &table->data_vec[ix].context); | |
9c584f04 | 199 | write_lock_irq(&table->rwlock); |
03db3a2d MB |
200 | } |
201 | ||
202 | old_net_dev = table->data_vec[ix].attr.ndev; | |
8e787646 | 203 | old_gid_type = table->data_vec[ix].attr.gid_type; |
03db3a2d MB |
204 | if (old_net_dev && old_net_dev != attr->ndev) |
205 | dev_put(old_net_dev); | |
206 | /* if modify_gid failed, just delete the old gid */ | |
207 | if (ret || action == GID_TABLE_WRITE_ACTION_DEL) { | |
208 | gid = &zgid; | |
209 | attr = &zattr; | |
210 | table->data_vec[ix].context = NULL; | |
211 | } | |
8e787646 | 212 | |
03db3a2d MB |
213 | memcpy(&table->data_vec[ix].gid, gid, sizeof(*gid)); |
214 | memcpy(&table->data_vec[ix].attr, attr, sizeof(*attr)); | |
8e787646 AH |
215 | if (default_gid) { |
216 | table->data_vec[ix].props |= GID_TABLE_ENTRY_DEFAULT; | |
217 | if (action == GID_TABLE_WRITE_ACTION_DEL) | |
218 | table->data_vec[ix].attr.gid_type = old_gid_type; | |
219 | } | |
03db3a2d MB |
220 | if (table->data_vec[ix].attr.ndev && |
221 | table->data_vec[ix].attr.ndev != old_net_dev) | |
222 | dev_hold(table->data_vec[ix].attr.ndev); | |
223 | ||
224 | table->data_vec[ix].props &= ~GID_TABLE_ENTRY_INVALID; | |
225 | ||
03db3a2d MB |
226 | return ret; |
227 | } | |
228 | ||
229 | static int add_gid(struct ib_device *ib_dev, u8 port, | |
230 | struct ib_gid_table *table, int ix, | |
231 | const union ib_gid *gid, | |
232 | const struct ib_gid_attr *attr, | |
233 | bool default_gid) { | |
234 | return write_gid(ib_dev, port, table, ix, gid, attr, | |
235 | GID_TABLE_WRITE_ACTION_ADD, default_gid); | |
236 | } | |
237 | ||
238 | static int modify_gid(struct ib_device *ib_dev, u8 port, | |
239 | struct ib_gid_table *table, int ix, | |
240 | const union ib_gid *gid, | |
241 | const struct ib_gid_attr *attr, | |
242 | bool default_gid) { | |
243 | return write_gid(ib_dev, port, table, ix, gid, attr, | |
244 | GID_TABLE_WRITE_ACTION_MODIFY, default_gid); | |
245 | } | |
246 | ||
247 | static int del_gid(struct ib_device *ib_dev, u8 port, | |
248 | struct ib_gid_table *table, int ix, | |
249 | bool default_gid) { | |
250 | return write_gid(ib_dev, port, table, ix, &zgid, &zattr, | |
251 | GID_TABLE_WRITE_ACTION_DEL, default_gid); | |
252 | } | |
253 | ||
9c584f04 | 254 | /* rwlock should be read locked */ |
03db3a2d MB |
255 | static int find_gid(struct ib_gid_table *table, const union ib_gid *gid, |
256 | const struct ib_gid_attr *val, bool default_gid, | |
cee3c4d0 | 257 | unsigned long mask, int *pempty) |
03db3a2d | 258 | { |
cee3c4d0 MB |
259 | int i = 0; |
260 | int found = -1; | |
261 | int empty = pempty ? -1 : 0; | |
03db3a2d | 262 | |
cee3c4d0 MB |
263 | while (i < table->sz && (found < 0 || empty < 0)) { |
264 | struct ib_gid_table_entry *data = &table->data_vec[i]; | |
265 | struct ib_gid_attr *attr = &data->attr; | |
266 | int curr_index = i; | |
03db3a2d | 267 | |
cee3c4d0 | 268 | i++; |
03db3a2d | 269 | |
cee3c4d0 MB |
270 | if (data->props & GID_TABLE_ENTRY_INVALID) |
271 | continue; | |
272 | ||
273 | if (empty < 0) | |
274 | if (!memcmp(&data->gid, &zgid, sizeof(*gid)) && | |
275 | !memcmp(attr, &zattr, sizeof(*attr)) && | |
276 | !data->props) | |
277 | empty = curr_index; | |
278 | ||
279 | if (found >= 0) | |
9c584f04 | 280 | continue; |
03db3a2d | 281 | |
b39ffa1d MB |
282 | if (mask & GID_ATTR_FIND_MASK_GID_TYPE && |
283 | attr->gid_type != val->gid_type) | |
284 | continue; | |
285 | ||
03db3a2d | 286 | if (mask & GID_ATTR_FIND_MASK_GID && |
cee3c4d0 | 287 | memcmp(gid, &data->gid, sizeof(*gid))) |
9c584f04 | 288 | continue; |
03db3a2d MB |
289 | |
290 | if (mask & GID_ATTR_FIND_MASK_NETDEV && | |
291 | attr->ndev != val->ndev) | |
9c584f04 | 292 | continue; |
03db3a2d MB |
293 | |
294 | if (mask & GID_ATTR_FIND_MASK_DEFAULT && | |
cee3c4d0 | 295 | !!(data->props & GID_TABLE_ENTRY_DEFAULT) != |
03db3a2d | 296 | default_gid) |
9c584f04 | 297 | continue; |
03db3a2d | 298 | |
cee3c4d0 | 299 | found = curr_index; |
03db3a2d MB |
300 | } |
301 | ||
cee3c4d0 MB |
302 | if (pempty) |
303 | *pempty = empty; | |
304 | ||
305 | return found; | |
03db3a2d MB |
306 | } |
307 | ||
308 | static void make_default_gid(struct net_device *dev, union ib_gid *gid) | |
309 | { | |
310 | gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); | |
311 | addrconf_ifid_eui48(&gid->raw[8], dev); | |
312 | } | |
313 | ||
314 | int ib_cache_gid_add(struct ib_device *ib_dev, u8 port, | |
315 | union ib_gid *gid, struct ib_gid_attr *attr) | |
316 | { | |
317 | struct ib_gid_table **ports_table = ib_dev->cache.gid_cache; | |
318 | struct ib_gid_table *table; | |
319 | int ix; | |
1da177e4 | 320 | int ret = 0; |
03db3a2d | 321 | struct net_device *idev; |
cee3c4d0 | 322 | int empty; |
1da177e4 | 323 | |
03db3a2d MB |
324 | table = ports_table[port - rdma_start_port(ib_dev)]; |
325 | ||
326 | if (!memcmp(gid, &zgid, sizeof(*gid))) | |
1da177e4 LT |
327 | return -EINVAL; |
328 | ||
03db3a2d MB |
329 | if (ib_dev->get_netdev) { |
330 | idev = ib_dev->get_netdev(ib_dev, port); | |
331 | if (idev && attr->ndev != idev) { | |
332 | union ib_gid default_gid; | |
1da177e4 | 333 | |
03db3a2d MB |
334 | /* Adding default GIDs in not permitted */ |
335 | make_default_gid(idev, &default_gid); | |
336 | if (!memcmp(gid, &default_gid, sizeof(*gid))) { | |
337 | dev_put(idev); | |
338 | return -EPERM; | |
339 | } | |
340 | } | |
341 | if (idev) | |
342 | dev_put(idev); | |
343 | } | |
1da177e4 | 344 | |
03db3a2d | 345 | mutex_lock(&table->lock); |
9c584f04 | 346 | write_lock_irq(&table->rwlock); |
1da177e4 | 347 | |
03db3a2d | 348 | ix = find_gid(table, gid, attr, false, GID_ATTR_FIND_MASK_GID | |
b39ffa1d | 349 | GID_ATTR_FIND_MASK_GID_TYPE | |
cee3c4d0 | 350 | GID_ATTR_FIND_MASK_NETDEV, &empty); |
03db3a2d MB |
351 | if (ix >= 0) |
352 | goto out_unlock; | |
1da177e4 | 353 | |
cee3c4d0 | 354 | if (empty < 0) { |
03db3a2d MB |
355 | ret = -ENOSPC; |
356 | goto out_unlock; | |
357 | } | |
358 | ||
cee3c4d0 | 359 | ret = add_gid(ib_dev, port, table, empty, gid, attr, false); |
9c584f04 MB |
360 | if (!ret) |
361 | dispatch_gid_change_event(ib_dev, port); | |
03db3a2d MB |
362 | |
363 | out_unlock: | |
9c584f04 | 364 | write_unlock_irq(&table->rwlock); |
03db3a2d | 365 | mutex_unlock(&table->lock); |
1da177e4 LT |
366 | return ret; |
367 | } | |
1da177e4 | 368 | |
03db3a2d MB |
369 | int ib_cache_gid_del(struct ib_device *ib_dev, u8 port, |
370 | union ib_gid *gid, struct ib_gid_attr *attr) | |
1da177e4 | 371 | { |
03db3a2d MB |
372 | struct ib_gid_table **ports_table = ib_dev->cache.gid_cache; |
373 | struct ib_gid_table *table; | |
374 | int ix; | |
375 | ||
376 | table = ports_table[port - rdma_start_port(ib_dev)]; | |
377 | ||
378 | mutex_lock(&table->lock); | |
9c584f04 | 379 | write_lock_irq(&table->rwlock); |
03db3a2d MB |
380 | |
381 | ix = find_gid(table, gid, attr, false, | |
382 | GID_ATTR_FIND_MASK_GID | | |
b39ffa1d | 383 | GID_ATTR_FIND_MASK_GID_TYPE | |
03db3a2d | 384 | GID_ATTR_FIND_MASK_NETDEV | |
cee3c4d0 MB |
385 | GID_ATTR_FIND_MASK_DEFAULT, |
386 | NULL); | |
03db3a2d MB |
387 | if (ix < 0) |
388 | goto out_unlock; | |
389 | ||
9c584f04 MB |
390 | if (!del_gid(ib_dev, port, table, ix, false)) |
391 | dispatch_gid_change_event(ib_dev, port); | |
03db3a2d MB |
392 | |
393 | out_unlock: | |
9c584f04 | 394 | write_unlock_irq(&table->rwlock); |
03db3a2d MB |
395 | mutex_unlock(&table->lock); |
396 | return 0; | |
397 | } | |
398 | ||
399 | int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port, | |
400 | struct net_device *ndev) | |
401 | { | |
402 | struct ib_gid_table **ports_table = ib_dev->cache.gid_cache; | |
403 | struct ib_gid_table *table; | |
404 | int ix; | |
9c584f04 | 405 | bool deleted = false; |
03db3a2d MB |
406 | |
407 | table = ports_table[port - rdma_start_port(ib_dev)]; | |
408 | ||
409 | mutex_lock(&table->lock); | |
9c584f04 | 410 | write_lock_irq(&table->rwlock); |
03db3a2d MB |
411 | |
412 | for (ix = 0; ix < table->sz; ix++) | |
413 | if (table->data_vec[ix].attr.ndev == ndev) | |
f336ae03 TB |
414 | if (!del_gid(ib_dev, port, table, ix, |
415 | !!(table->data_vec[ix].props & | |
416 | GID_TABLE_ENTRY_DEFAULT))) | |
9c584f04 | 417 | deleted = true; |
03db3a2d | 418 | |
9c584f04 | 419 | write_unlock_irq(&table->rwlock); |
03db3a2d | 420 | mutex_unlock(&table->lock); |
9c584f04 MB |
421 | |
422 | if (deleted) | |
423 | dispatch_gid_change_event(ib_dev, port); | |
424 | ||
03db3a2d MB |
425 | return 0; |
426 | } | |
427 | ||
428 | static int __ib_cache_gid_get(struct ib_device *ib_dev, u8 port, int index, | |
429 | union ib_gid *gid, struct ib_gid_attr *attr) | |
430 | { | |
431 | struct ib_gid_table **ports_table = ib_dev->cache.gid_cache; | |
432 | struct ib_gid_table *table; | |
1da177e4 | 433 | |
03db3a2d | 434 | table = ports_table[port - rdma_start_port(ib_dev)]; |
1da177e4 | 435 | |
03db3a2d MB |
436 | if (index < 0 || index >= table->sz) |
437 | return -EINVAL; | |
1da177e4 | 438 | |
9c584f04 | 439 | if (table->data_vec[index].props & GID_TABLE_ENTRY_INVALID) |
03db3a2d | 440 | return -EAGAIN; |
03db3a2d MB |
441 | |
442 | memcpy(gid, &table->data_vec[index].gid, sizeof(*gid)); | |
443 | if (attr) { | |
444 | memcpy(attr, &table->data_vec[index].attr, sizeof(*attr)); | |
445 | if (attr->ndev) | |
446 | dev_hold(attr->ndev); | |
447 | } | |
448 | ||
03db3a2d MB |
449 | return 0; |
450 | } | |
451 | ||
452 | static int _ib_cache_gid_table_find(struct ib_device *ib_dev, | |
453 | const union ib_gid *gid, | |
454 | const struct ib_gid_attr *val, | |
455 | unsigned long mask, | |
456 | u8 *port, u16 *index) | |
457 | { | |
458 | struct ib_gid_table **ports_table = ib_dev->cache.gid_cache; | |
459 | struct ib_gid_table *table; | |
460 | u8 p; | |
461 | int local_index; | |
9c584f04 | 462 | unsigned long flags; |
03db3a2d MB |
463 | |
464 | for (p = 0; p < ib_dev->phys_port_cnt; p++) { | |
465 | table = ports_table[p]; | |
9c584f04 | 466 | read_lock_irqsave(&table->rwlock, flags); |
cee3c4d0 | 467 | local_index = find_gid(table, gid, val, false, mask, NULL); |
03db3a2d MB |
468 | if (local_index >= 0) { |
469 | if (index) | |
470 | *index = local_index; | |
471 | if (port) | |
472 | *port = p + rdma_start_port(ib_dev); | |
9c584f04 | 473 | read_unlock_irqrestore(&table->rwlock, flags); |
03db3a2d | 474 | return 0; |
1da177e4 | 475 | } |
9c584f04 | 476 | read_unlock_irqrestore(&table->rwlock, flags); |
1da177e4 | 477 | } |
1da177e4 | 478 | |
03db3a2d MB |
479 | return -ENOENT; |
480 | } | |
481 | ||
482 | static int ib_cache_gid_find(struct ib_device *ib_dev, | |
483 | const union ib_gid *gid, | |
b39ffa1d | 484 | enum ib_gid_type gid_type, |
03db3a2d MB |
485 | struct net_device *ndev, u8 *port, |
486 | u16 *index) | |
487 | { | |
b39ffa1d MB |
488 | unsigned long mask = GID_ATTR_FIND_MASK_GID | |
489 | GID_ATTR_FIND_MASK_GID_TYPE; | |
490 | struct ib_gid_attr gid_attr_val = {.ndev = ndev, .gid_type = gid_type}; | |
03db3a2d MB |
491 | |
492 | if (ndev) | |
493 | mask |= GID_ATTR_FIND_MASK_NETDEV; | |
494 | ||
495 | return _ib_cache_gid_table_find(ib_dev, gid, &gid_attr_val, | |
496 | mask, port, index); | |
497 | } | |
498 | ||
d300ec52 MB |
499 | int ib_find_cached_gid_by_port(struct ib_device *ib_dev, |
500 | const union ib_gid *gid, | |
b39ffa1d | 501 | enum ib_gid_type gid_type, |
d300ec52 MB |
502 | u8 port, struct net_device *ndev, |
503 | u16 *index) | |
03db3a2d MB |
504 | { |
505 | int local_index; | |
506 | struct ib_gid_table **ports_table = ib_dev->cache.gid_cache; | |
507 | struct ib_gid_table *table; | |
b39ffa1d MB |
508 | unsigned long mask = GID_ATTR_FIND_MASK_GID | |
509 | GID_ATTR_FIND_MASK_GID_TYPE; | |
510 | struct ib_gid_attr val = {.ndev = ndev, .gid_type = gid_type}; | |
9c584f04 | 511 | unsigned long flags; |
03db3a2d MB |
512 | |
513 | if (port < rdma_start_port(ib_dev) || | |
514 | port > rdma_end_port(ib_dev)) | |
515 | return -ENOENT; | |
516 | ||
517 | table = ports_table[port - rdma_start_port(ib_dev)]; | |
518 | ||
519 | if (ndev) | |
520 | mask |= GID_ATTR_FIND_MASK_NETDEV; | |
521 | ||
9c584f04 | 522 | read_lock_irqsave(&table->rwlock, flags); |
cee3c4d0 | 523 | local_index = find_gid(table, gid, &val, false, mask, NULL); |
03db3a2d MB |
524 | if (local_index >= 0) { |
525 | if (index) | |
526 | *index = local_index; | |
9c584f04 | 527 | read_unlock_irqrestore(&table->rwlock, flags); |
03db3a2d MB |
528 | return 0; |
529 | } | |
530 | ||
9c584f04 | 531 | read_unlock_irqrestore(&table->rwlock, flags); |
03db3a2d MB |
532 | return -ENOENT; |
533 | } | |
d300ec52 | 534 | EXPORT_SYMBOL(ib_find_cached_gid_by_port); |
03db3a2d | 535 | |
99b27e3b MB |
536 | /** |
537 | * ib_find_gid_by_filter - Returns the GID table index where a specified | |
538 | * GID value occurs | |
539 | * @device: The device to query. | |
540 | * @gid: The GID value to search for. | |
541 | * @port_num: The port number of the device where the GID value could be | |
542 | * searched. | |
543 | * @filter: The filter function is executed on any matching GID in the table. | |
544 | * If the filter function returns true, the corresponding index is returned, | |
545 | * otherwise, we continue searching the GID table. It's guaranteed that | |
546 | * while filter is executed, ndev field is valid and the structure won't | |
547 | * change. filter is executed in an atomic context. filter must not be NULL. | |
548 | * @index: The index into the cached GID table where the GID was found. This | |
549 | * parameter may be NULL. | |
550 | * | |
551 | * ib_cache_gid_find_by_filter() searches for the specified GID value | |
552 | * of which the filter function returns true in the port's GID table. | |
553 | * This function is only supported on RoCE ports. | |
554 | * | |
555 | */ | |
556 | static int ib_cache_gid_find_by_filter(struct ib_device *ib_dev, | |
557 | const union ib_gid *gid, | |
558 | u8 port, | |
559 | bool (*filter)(const union ib_gid *, | |
560 | const struct ib_gid_attr *, | |
561 | void *), | |
562 | void *context, | |
563 | u16 *index) | |
564 | { | |
565 | struct ib_gid_table **ports_table = ib_dev->cache.gid_cache; | |
566 | struct ib_gid_table *table; | |
567 | unsigned int i; | |
9c584f04 | 568 | unsigned long flags; |
99b27e3b MB |
569 | bool found = false; |
570 | ||
571 | if (!ports_table) | |
572 | return -EOPNOTSUPP; | |
573 | ||
574 | if (port < rdma_start_port(ib_dev) || | |
575 | port > rdma_end_port(ib_dev) || | |
576 | !rdma_protocol_roce(ib_dev, port)) | |
577 | return -EPROTONOSUPPORT; | |
578 | ||
579 | table = ports_table[port - rdma_start_port(ib_dev)]; | |
580 | ||
9c584f04 | 581 | read_lock_irqsave(&table->rwlock, flags); |
99b27e3b MB |
582 | for (i = 0; i < table->sz; i++) { |
583 | struct ib_gid_attr attr; | |
99b27e3b | 584 | |
99b27e3b MB |
585 | if (table->data_vec[i].props & GID_TABLE_ENTRY_INVALID) |
586 | goto next; | |
587 | ||
588 | if (memcmp(gid, &table->data_vec[i].gid, sizeof(*gid))) | |
589 | goto next; | |
590 | ||
591 | memcpy(&attr, &table->data_vec[i].attr, sizeof(attr)); | |
592 | ||
593 | if (filter(gid, &attr, context)) | |
594 | found = true; | |
595 | ||
596 | next: | |
99b27e3b MB |
597 | if (found) |
598 | break; | |
599 | } | |
9c584f04 | 600 | read_unlock_irqrestore(&table->rwlock, flags); |
99b27e3b MB |
601 | |
602 | if (!found) | |
603 | return -ENOENT; | |
604 | ||
605 | if (index) | |
606 | *index = i; | |
607 | return 0; | |
608 | } | |
609 | ||
03db3a2d MB |
610 | static struct ib_gid_table *alloc_gid_table(int sz) |
611 | { | |
03db3a2d MB |
612 | struct ib_gid_table *table = |
613 | kzalloc(sizeof(struct ib_gid_table), GFP_KERNEL); | |
9c584f04 | 614 | |
03db3a2d MB |
615 | if (!table) |
616 | return NULL; | |
617 | ||
618 | table->data_vec = kcalloc(sz, sizeof(*table->data_vec), GFP_KERNEL); | |
619 | if (!table->data_vec) | |
620 | goto err_free_table; | |
621 | ||
622 | mutex_init(&table->lock); | |
623 | ||
624 | table->sz = sz; | |
9c584f04 | 625 | rwlock_init(&table->rwlock); |
03db3a2d MB |
626 | |
627 | return table; | |
628 | ||
629 | err_free_table: | |
630 | kfree(table); | |
631 | return NULL; | |
632 | } | |
633 | ||
634 | static void release_gid_table(struct ib_gid_table *table) | |
635 | { | |
636 | if (table) { | |
637 | kfree(table->data_vec); | |
638 | kfree(table); | |
639 | } | |
640 | } | |
641 | ||
642 | static void cleanup_gid_table_port(struct ib_device *ib_dev, u8 port, | |
643 | struct ib_gid_table *table) | |
644 | { | |
645 | int i; | |
9c584f04 | 646 | bool deleted = false; |
03db3a2d MB |
647 | |
648 | if (!table) | |
649 | return; | |
650 | ||
9c584f04 | 651 | write_lock_irq(&table->rwlock); |
03db3a2d MB |
652 | for (i = 0; i < table->sz; ++i) { |
653 | if (memcmp(&table->data_vec[i].gid, &zgid, | |
654 | sizeof(table->data_vec[i].gid))) | |
9c584f04 MB |
655 | if (!del_gid(ib_dev, port, table, i, |
656 | table->data_vec[i].props & | |
657 | GID_ATTR_FIND_MASK_DEFAULT)) | |
658 | deleted = true; | |
03db3a2d | 659 | } |
9c584f04 MB |
660 | write_unlock_irq(&table->rwlock); |
661 | ||
662 | if (deleted) | |
663 | dispatch_gid_change_event(ib_dev, port); | |
03db3a2d MB |
664 | } |
665 | ||
666 | void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port, | |
667 | struct net_device *ndev, | |
b39ffa1d | 668 | unsigned long gid_type_mask, |
03db3a2d MB |
669 | enum ib_cache_gid_default_mode mode) |
670 | { | |
671 | struct ib_gid_table **ports_table = ib_dev->cache.gid_cache; | |
672 | union ib_gid gid; | |
673 | struct ib_gid_attr gid_attr; | |
b39ffa1d | 674 | struct ib_gid_attr zattr_type = zattr; |
03db3a2d | 675 | struct ib_gid_table *table; |
b39ffa1d | 676 | unsigned int gid_type; |
03db3a2d MB |
677 | |
678 | table = ports_table[port - rdma_start_port(ib_dev)]; | |
679 | ||
680 | make_default_gid(ndev, &gid); | |
681 | memset(&gid_attr, 0, sizeof(gid_attr)); | |
682 | gid_attr.ndev = ndev; | |
683 | ||
b39ffa1d MB |
684 | for (gid_type = 0; gid_type < IB_GID_TYPE_SIZE; ++gid_type) { |
685 | int ix; | |
686 | union ib_gid current_gid; | |
687 | struct ib_gid_attr current_gid_attr = {}; | |
688 | ||
689 | if (1UL << gid_type & ~gid_type_mask) | |
690 | continue; | |
691 | ||
692 | gid_attr.gid_type = gid_type; | |
693 | ||
694 | mutex_lock(&table->lock); | |
695 | write_lock_irq(&table->rwlock); | |
696 | ix = find_gid(table, NULL, &gid_attr, true, | |
697 | GID_ATTR_FIND_MASK_GID_TYPE | | |
698 | GID_ATTR_FIND_MASK_DEFAULT, | |
699 | NULL); | |
700 | ||
701 | /* Coudn't find default GID location */ | |
f4e7de63 DL |
702 | if (WARN_ON(ix < 0)) |
703 | goto release; | |
b39ffa1d MB |
704 | |
705 | zattr_type.gid_type = gid_type; | |
706 | ||
707 | if (!__ib_cache_gid_get(ib_dev, port, ix, | |
708 | ¤t_gid, ¤t_gid_attr) && | |
709 | mode == IB_CACHE_GID_DEFAULT_MODE_SET && | |
710 | !memcmp(&gid, ¤t_gid, sizeof(gid)) && | |
711 | !memcmp(&gid_attr, ¤t_gid_attr, sizeof(gid_attr))) | |
712 | goto release; | |
713 | ||
714 | if (memcmp(¤t_gid, &zgid, sizeof(current_gid)) || | |
715 | memcmp(¤t_gid_attr, &zattr_type, | |
716 | sizeof(current_gid_attr))) { | |
717 | if (del_gid(ib_dev, port, table, ix, true)) { | |
718 | pr_warn("ib_cache_gid: can't delete index %d for default gid %pI6\n", | |
719 | ix, gid.raw); | |
720 | goto release; | |
721 | } else { | |
722 | dispatch_gid_change_event(ib_dev, port); | |
723 | } | |
9c584f04 | 724 | } |
03db3a2d | 725 | |
b39ffa1d MB |
726 | if (mode == IB_CACHE_GID_DEFAULT_MODE_SET) { |
727 | if (add_gid(ib_dev, port, table, ix, &gid, &gid_attr, true)) | |
728 | pr_warn("ib_cache_gid: unable to add default gid %pI6\n", | |
729 | gid.raw); | |
730 | else | |
731 | dispatch_gid_change_event(ib_dev, port); | |
9c584f04 | 732 | } |
03db3a2d | 733 | |
b39ffa1d MB |
734 | release: |
735 | if (current_gid_attr.ndev) | |
736 | dev_put(current_gid_attr.ndev); | |
737 | write_unlock_irq(&table->rwlock); | |
738 | mutex_unlock(&table->lock); | |
739 | } | |
03db3a2d MB |
740 | } |
741 | ||
742 | static int gid_table_reserve_default(struct ib_device *ib_dev, u8 port, | |
743 | struct ib_gid_table *table) | |
744 | { | |
b39ffa1d MB |
745 | unsigned int i; |
746 | unsigned long roce_gid_type_mask; | |
747 | unsigned int num_default_gids; | |
748 | unsigned int current_gid = 0; | |
749 | ||
750 | roce_gid_type_mask = roce_gid_type_mask_support(ib_dev, port); | |
751 | num_default_gids = hweight_long(roce_gid_type_mask); | |
752 | for (i = 0; i < num_default_gids && i < table->sz; i++) { | |
753 | struct ib_gid_table_entry *entry = | |
754 | &table->data_vec[i]; | |
03db3a2d MB |
755 | |
756 | entry->props |= GID_TABLE_ENTRY_DEFAULT; | |
b39ffa1d MB |
757 | current_gid = find_next_bit(&roce_gid_type_mask, |
758 | BITS_PER_LONG, | |
759 | current_gid); | |
760 | entry->attr.gid_type = current_gid++; | |
03db3a2d MB |
761 | } |
762 | ||
763 | return 0; | |
764 | } | |
765 | ||
766 | static int _gid_table_setup_one(struct ib_device *ib_dev) | |
767 | { | |
768 | u8 port; | |
769 | struct ib_gid_table **table; | |
770 | int err = 0; | |
771 | ||
772 | table = kcalloc(ib_dev->phys_port_cnt, sizeof(*table), GFP_KERNEL); | |
773 | ||
774 | if (!table) { | |
775 | pr_warn("failed to allocate ib gid cache for %s\n", | |
776 | ib_dev->name); | |
777 | return -ENOMEM; | |
778 | } | |
779 | ||
780 | for (port = 0; port < ib_dev->phys_port_cnt; port++) { | |
781 | u8 rdma_port = port + rdma_start_port(ib_dev); | |
782 | ||
783 | table[port] = | |
784 | alloc_gid_table( | |
785 | ib_dev->port_immutable[rdma_port].gid_tbl_len); | |
786 | if (!table[port]) { | |
787 | err = -ENOMEM; | |
788 | goto rollback_table_setup; | |
789 | } | |
790 | ||
791 | err = gid_table_reserve_default(ib_dev, | |
792 | port + rdma_start_port(ib_dev), | |
793 | table[port]); | |
794 | if (err) | |
795 | goto rollback_table_setup; | |
796 | } | |
797 | ||
798 | ib_dev->cache.gid_cache = table; | |
799 | return 0; | |
800 | ||
801 | rollback_table_setup: | |
802 | for (port = 0; port < ib_dev->phys_port_cnt; port++) { | |
803 | cleanup_gid_table_port(ib_dev, port + rdma_start_port(ib_dev), | |
804 | table[port]); | |
805 | release_gid_table(table[port]); | |
806 | } | |
807 | ||
808 | kfree(table); | |
809 | return err; | |
810 | } | |
811 | ||
812 | static void gid_table_release_one(struct ib_device *ib_dev) | |
813 | { | |
814 | struct ib_gid_table **table = ib_dev->cache.gid_cache; | |
815 | u8 port; | |
816 | ||
817 | if (!table) | |
818 | return; | |
819 | ||
820 | for (port = 0; port < ib_dev->phys_port_cnt; port++) | |
821 | release_gid_table(table[port]); | |
822 | ||
823 | kfree(table); | |
824 | ib_dev->cache.gid_cache = NULL; | |
825 | } | |
826 | ||
827 | static void gid_table_cleanup_one(struct ib_device *ib_dev) | |
828 | { | |
829 | struct ib_gid_table **table = ib_dev->cache.gid_cache; | |
830 | u8 port; | |
831 | ||
832 | if (!table) | |
833 | return; | |
834 | ||
835 | for (port = 0; port < ib_dev->phys_port_cnt; port++) | |
836 | cleanup_gid_table_port(ib_dev, port + rdma_start_port(ib_dev), | |
837 | table[port]); | |
838 | } | |
839 | ||
840 | static int gid_table_setup_one(struct ib_device *ib_dev) | |
841 | { | |
842 | int err; | |
843 | ||
844 | err = _gid_table_setup_one(ib_dev); | |
845 | ||
846 | if (err) | |
847 | return err; | |
848 | ||
849 | err = roce_rescan_device(ib_dev); | |
850 | ||
851 | if (err) { | |
852 | gid_table_cleanup_one(ib_dev); | |
853 | gid_table_release_one(ib_dev); | |
854 | } | |
855 | ||
856 | return err; | |
857 | } | |
858 | ||
859 | int ib_get_cached_gid(struct ib_device *device, | |
860 | u8 port_num, | |
861 | int index, | |
55ee3ab2 MB |
862 | union ib_gid *gid, |
863 | struct ib_gid_attr *gid_attr) | |
03db3a2d | 864 | { |
9c584f04 MB |
865 | int res; |
866 | unsigned long flags; | |
867 | struct ib_gid_table **ports_table = device->cache.gid_cache; | |
868 | struct ib_gid_table *table = ports_table[port_num - rdma_start_port(device)]; | |
869 | ||
03db3a2d MB |
870 | if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device)) |
871 | return -EINVAL; | |
872 | ||
9c584f04 MB |
873 | read_lock_irqsave(&table->rwlock, flags); |
874 | res = __ib_cache_gid_get(device, port_num, index, gid, gid_attr); | |
875 | read_unlock_irqrestore(&table->rwlock, flags); | |
876 | ||
877 | return res; | |
03db3a2d MB |
878 | } |
879 | EXPORT_SYMBOL(ib_get_cached_gid); | |
880 | ||
881 | int ib_find_cached_gid(struct ib_device *device, | |
882 | const union ib_gid *gid, | |
b39ffa1d | 883 | enum ib_gid_type gid_type, |
55ee3ab2 | 884 | struct net_device *ndev, |
03db3a2d MB |
885 | u8 *port_num, |
886 | u16 *index) | |
887 | { | |
b39ffa1d | 888 | return ib_cache_gid_find(device, gid, gid_type, ndev, port_num, index); |
1da177e4 LT |
889 | } |
890 | EXPORT_SYMBOL(ib_find_cached_gid); | |
891 | ||
99b27e3b MB |
892 | int ib_find_gid_by_filter(struct ib_device *device, |
893 | const union ib_gid *gid, | |
894 | u8 port_num, | |
895 | bool (*filter)(const union ib_gid *gid, | |
896 | const struct ib_gid_attr *, | |
897 | void *), | |
898 | void *context, u16 *index) | |
899 | { | |
900 | /* Only RoCE GID table supports filter function */ | |
901 | if (!rdma_cap_roce_gid_table(device, port_num) && filter) | |
902 | return -EPROTONOSUPPORT; | |
903 | ||
904 | return ib_cache_gid_find_by_filter(device, gid, | |
905 | port_num, filter, | |
906 | context, index); | |
907 | } | |
908 | EXPORT_SYMBOL(ib_find_gid_by_filter); | |
909 | ||
1da177e4 LT |
910 | int ib_get_cached_pkey(struct ib_device *device, |
911 | u8 port_num, | |
912 | int index, | |
913 | u16 *pkey) | |
914 | { | |
915 | struct ib_pkey_cache *cache; | |
916 | unsigned long flags; | |
917 | int ret = 0; | |
918 | ||
0cf18d77 | 919 | if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device)) |
1da177e4 LT |
920 | return -EINVAL; |
921 | ||
922 | read_lock_irqsave(&device->cache.lock, flags); | |
923 | ||
0cf18d77 | 924 | cache = device->cache.pkey_cache[port_num - rdma_start_port(device)]; |
1da177e4 LT |
925 | |
926 | if (index < 0 || index >= cache->table_len) | |
927 | ret = -EINVAL; | |
928 | else | |
929 | *pkey = cache->table[index]; | |
930 | ||
931 | read_unlock_irqrestore(&device->cache.lock, flags); | |
932 | ||
933 | return ret; | |
934 | } | |
935 | EXPORT_SYMBOL(ib_get_cached_pkey); | |
936 | ||
937 | int ib_find_cached_pkey(struct ib_device *device, | |
938 | u8 port_num, | |
939 | u16 pkey, | |
940 | u16 *index) | |
941 | { | |
942 | struct ib_pkey_cache *cache; | |
943 | unsigned long flags; | |
944 | int i; | |
945 | int ret = -ENOENT; | |
ff7166c4 | 946 | int partial_ix = -1; |
1da177e4 | 947 | |
0cf18d77 | 948 | if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device)) |
1da177e4 LT |
949 | return -EINVAL; |
950 | ||
951 | read_lock_irqsave(&device->cache.lock, flags); | |
952 | ||
0cf18d77 | 953 | cache = device->cache.pkey_cache[port_num - rdma_start_port(device)]; |
1da177e4 LT |
954 | |
955 | *index = -1; | |
956 | ||
957 | for (i = 0; i < cache->table_len; ++i) | |
958 | if ((cache->table[i] & 0x7fff) == (pkey & 0x7fff)) { | |
ff7166c4 JM |
959 | if (cache->table[i] & 0x8000) { |
960 | *index = i; | |
961 | ret = 0; | |
962 | break; | |
963 | } else | |
964 | partial_ix = i; | |
1da177e4 LT |
965 | } |
966 | ||
ff7166c4 JM |
967 | if (ret && partial_ix >= 0) { |
968 | *index = partial_ix; | |
969 | ret = 0; | |
970 | } | |
971 | ||
1da177e4 LT |
972 | read_unlock_irqrestore(&device->cache.lock, flags); |
973 | ||
974 | return ret; | |
975 | } | |
976 | EXPORT_SYMBOL(ib_find_cached_pkey); | |
977 | ||
73aaa741 JM |
978 | int ib_find_exact_cached_pkey(struct ib_device *device, |
979 | u8 port_num, | |
980 | u16 pkey, | |
981 | u16 *index) | |
982 | { | |
983 | struct ib_pkey_cache *cache; | |
984 | unsigned long flags; | |
985 | int i; | |
986 | int ret = -ENOENT; | |
987 | ||
0cf18d77 | 988 | if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device)) |
73aaa741 JM |
989 | return -EINVAL; |
990 | ||
991 | read_lock_irqsave(&device->cache.lock, flags); | |
992 | ||
0cf18d77 | 993 | cache = device->cache.pkey_cache[port_num - rdma_start_port(device)]; |
73aaa741 JM |
994 | |
995 | *index = -1; | |
996 | ||
997 | for (i = 0; i < cache->table_len; ++i) | |
998 | if (cache->table[i] == pkey) { | |
999 | *index = i; | |
1000 | ret = 0; | |
1001 | break; | |
1002 | } | |
1003 | ||
1004 | read_unlock_irqrestore(&device->cache.lock, flags); | |
1005 | ||
1006 | return ret; | |
1007 | } | |
1008 | EXPORT_SYMBOL(ib_find_exact_cached_pkey); | |
1009 | ||
6fb9cdbf JM |
1010 | int ib_get_cached_lmc(struct ib_device *device, |
1011 | u8 port_num, | |
1012 | u8 *lmc) | |
1013 | { | |
1014 | unsigned long flags; | |
1015 | int ret = 0; | |
1016 | ||
0cf18d77 | 1017 | if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device)) |
6fb9cdbf JM |
1018 | return -EINVAL; |
1019 | ||
1020 | read_lock_irqsave(&device->cache.lock, flags); | |
0cf18d77 | 1021 | *lmc = device->cache.lmc_cache[port_num - rdma_start_port(device)]; |
6fb9cdbf JM |
1022 | read_unlock_irqrestore(&device->cache.lock, flags); |
1023 | ||
1024 | return ret; | |
1025 | } | |
1026 | EXPORT_SYMBOL(ib_get_cached_lmc); | |
1027 | ||
1da177e4 LT |
1028 | static void ib_cache_update(struct ib_device *device, |
1029 | u8 port) | |
1030 | { | |
1031 | struct ib_port_attr *tprops = NULL; | |
1032 | struct ib_pkey_cache *pkey_cache = NULL, *old_pkey_cache; | |
03db3a2d MB |
1033 | struct ib_gid_cache { |
1034 | int table_len; | |
1035 | union ib_gid table[0]; | |
1036 | } *gid_cache = NULL; | |
1da177e4 LT |
1037 | int i; |
1038 | int ret; | |
03db3a2d MB |
1039 | struct ib_gid_table *table; |
1040 | struct ib_gid_table **ports_table = device->cache.gid_cache; | |
1041 | bool use_roce_gid_table = | |
1042 | rdma_cap_roce_gid_table(device, port); | |
1043 | ||
1044 | if (port < rdma_start_port(device) || port > rdma_end_port(device)) | |
1045 | return; | |
1046 | ||
1047 | table = ports_table[port - rdma_start_port(device)]; | |
1da177e4 LT |
1048 | |
1049 | tprops = kmalloc(sizeof *tprops, GFP_KERNEL); | |
1050 | if (!tprops) | |
1051 | return; | |
1052 | ||
1053 | ret = ib_query_port(device, port, tprops); | |
1054 | if (ret) { | |
aba25a3e PP |
1055 | pr_warn("ib_query_port failed (%d) for %s\n", |
1056 | ret, device->name); | |
1da177e4 LT |
1057 | goto err; |
1058 | } | |
1059 | ||
1060 | pkey_cache = kmalloc(sizeof *pkey_cache + tprops->pkey_tbl_len * | |
1061 | sizeof *pkey_cache->table, GFP_KERNEL); | |
1062 | if (!pkey_cache) | |
1063 | goto err; | |
1064 | ||
1065 | pkey_cache->table_len = tprops->pkey_tbl_len; | |
1066 | ||
03db3a2d MB |
1067 | if (!use_roce_gid_table) { |
1068 | gid_cache = kmalloc(sizeof(*gid_cache) + tprops->gid_tbl_len * | |
1069 | sizeof(*gid_cache->table), GFP_KERNEL); | |
1070 | if (!gid_cache) | |
1071 | goto err; | |
1da177e4 | 1072 | |
03db3a2d MB |
1073 | gid_cache->table_len = tprops->gid_tbl_len; |
1074 | } | |
1da177e4 LT |
1075 | |
1076 | for (i = 0; i < pkey_cache->table_len; ++i) { | |
1077 | ret = ib_query_pkey(device, port, i, pkey_cache->table + i); | |
1078 | if (ret) { | |
aba25a3e PP |
1079 | pr_warn("ib_query_pkey failed (%d) for %s (index %d)\n", |
1080 | ret, device->name, i); | |
1da177e4 LT |
1081 | goto err; |
1082 | } | |
1083 | } | |
1084 | ||
03db3a2d MB |
1085 | if (!use_roce_gid_table) { |
1086 | for (i = 0; i < gid_cache->table_len; ++i) { | |
1087 | ret = ib_query_gid(device, port, i, | |
55ee3ab2 | 1088 | gid_cache->table + i, NULL); |
03db3a2d | 1089 | if (ret) { |
aba25a3e PP |
1090 | pr_warn("ib_query_gid failed (%d) for %s (index %d)\n", |
1091 | ret, device->name, i); | |
03db3a2d MB |
1092 | goto err; |
1093 | } | |
1da177e4 LT |
1094 | } |
1095 | } | |
1096 | ||
1097 | write_lock_irq(&device->cache.lock); | |
1098 | ||
0cf18d77 | 1099 | old_pkey_cache = device->cache.pkey_cache[port - rdma_start_port(device)]; |
1da177e4 | 1100 | |
0cf18d77 | 1101 | device->cache.pkey_cache[port - rdma_start_port(device)] = pkey_cache; |
03db3a2d | 1102 | if (!use_roce_gid_table) { |
9c584f04 | 1103 | write_lock(&table->rwlock); |
03db3a2d MB |
1104 | for (i = 0; i < gid_cache->table_len; i++) { |
1105 | modify_gid(device, port, table, i, gid_cache->table + i, | |
1106 | &zattr, false); | |
1107 | } | |
9c584f04 | 1108 | write_unlock(&table->rwlock); |
03db3a2d | 1109 | } |
1da177e4 | 1110 | |
0cf18d77 | 1111 | device->cache.lmc_cache[port - rdma_start_port(device)] = tprops->lmc; |
6fb9cdbf | 1112 | |
1da177e4 LT |
1113 | write_unlock_irq(&device->cache.lock); |
1114 | ||
03db3a2d | 1115 | kfree(gid_cache); |
1da177e4 | 1116 | kfree(old_pkey_cache); |
1da177e4 LT |
1117 | kfree(tprops); |
1118 | return; | |
1119 | ||
1120 | err: | |
1121 | kfree(pkey_cache); | |
1122 | kfree(gid_cache); | |
1123 | kfree(tprops); | |
1124 | } | |
1125 | ||
c4028958 | 1126 | static void ib_cache_task(struct work_struct *_work) |
1da177e4 | 1127 | { |
c4028958 DH |
1128 | struct ib_update_work *work = |
1129 | container_of(_work, struct ib_update_work, work); | |
1da177e4 LT |
1130 | |
1131 | ib_cache_update(work->device, work->port_num); | |
1132 | kfree(work); | |
1133 | } | |
1134 | ||
1135 | static void ib_cache_event(struct ib_event_handler *handler, | |
1136 | struct ib_event *event) | |
1137 | { | |
1138 | struct ib_update_work *work; | |
1139 | ||
1140 | if (event->event == IB_EVENT_PORT_ERR || | |
1141 | event->event == IB_EVENT_PORT_ACTIVE || | |
1142 | event->event == IB_EVENT_LID_CHANGE || | |
1143 | event->event == IB_EVENT_PKEY_CHANGE || | |
acaea9ee | 1144 | event->event == IB_EVENT_SM_CHANGE || |
761d90ed OG |
1145 | event->event == IB_EVENT_CLIENT_REREGISTER || |
1146 | event->event == IB_EVENT_GID_CHANGE) { | |
1da177e4 LT |
1147 | work = kmalloc(sizeof *work, GFP_ATOMIC); |
1148 | if (work) { | |
c4028958 | 1149 | INIT_WORK(&work->work, ib_cache_task); |
1da177e4 LT |
1150 | work->device = event->device; |
1151 | work->port_num = event->element.port_num; | |
f0626710 | 1152 | queue_work(ib_wq, &work->work); |
1da177e4 LT |
1153 | } |
1154 | } | |
1155 | } | |
1156 | ||
03db3a2d | 1157 | int ib_cache_setup_one(struct ib_device *device) |
1da177e4 LT |
1158 | { |
1159 | int p; | |
03db3a2d | 1160 | int err; |
1da177e4 LT |
1161 | |
1162 | rwlock_init(&device->cache.lock); | |
1163 | ||
1164 | device->cache.pkey_cache = | |
55aeed06 | 1165 | kzalloc(sizeof *device->cache.pkey_cache * |
0cf18d77 | 1166 | (rdma_end_port(device) - rdma_start_port(device) + 1), GFP_KERNEL); |
6fb9cdbf | 1167 | device->cache.lmc_cache = kmalloc(sizeof *device->cache.lmc_cache * |
0cf18d77 IW |
1168 | (rdma_end_port(device) - |
1169 | rdma_start_port(device) + 1), | |
6fb9cdbf | 1170 | GFP_KERNEL); |
03db3a2d | 1171 | if (!device->cache.pkey_cache || |
6fb9cdbf | 1172 | !device->cache.lmc_cache) { |
aba25a3e | 1173 | pr_warn("Couldn't allocate cache for %s\n", device->name); |
03db3a2d | 1174 | return -ENOMEM; |
1da177e4 LT |
1175 | } |
1176 | ||
03db3a2d MB |
1177 | err = gid_table_setup_one(device); |
1178 | if (err) | |
1179 | /* Allocated memory will be cleaned in the release function */ | |
1180 | return err; | |
1181 | ||
55aeed06 | 1182 | for (p = 0; p <= rdma_end_port(device) - rdma_start_port(device); ++p) |
0cf18d77 | 1183 | ib_cache_update(device, p + rdma_start_port(device)); |
1da177e4 LT |
1184 | |
1185 | INIT_IB_EVENT_HANDLER(&device->cache.event_handler, | |
1186 | device, ib_cache_event); | |
03db3a2d MB |
1187 | err = ib_register_event_handler(&device->cache.event_handler); |
1188 | if (err) | |
1189 | goto err; | |
1da177e4 | 1190 | |
03db3a2d | 1191 | return 0; |
1da177e4 LT |
1192 | |
1193 | err: | |
03db3a2d MB |
1194 | gid_table_cleanup_one(device); |
1195 | return err; | |
1da177e4 LT |
1196 | } |
1197 | ||
03db3a2d | 1198 | void ib_cache_release_one(struct ib_device *device) |
1da177e4 LT |
1199 | { |
1200 | int p; | |
1201 | ||
03db3a2d MB |
1202 | /* |
1203 | * The release function frees all the cache elements. | |
1204 | * This function should be called as part of freeing | |
1205 | * all the device's resources when the cache could no | |
1206 | * longer be accessed. | |
1207 | */ | |
1208 | if (device->cache.pkey_cache) | |
1209 | for (p = 0; | |
1210 | p <= rdma_end_port(device) - rdma_start_port(device); ++p) | |
1211 | kfree(device->cache.pkey_cache[p]); | |
1212 | ||
1213 | gid_table_release_one(device); | |
1da177e4 | 1214 | kfree(device->cache.pkey_cache); |
6fb9cdbf | 1215 | kfree(device->cache.lmc_cache); |
1da177e4 LT |
1216 | } |
1217 | ||
03db3a2d MB |
1218 | void ib_cache_cleanup_one(struct ib_device *device) |
1219 | { | |
1220 | /* The cleanup function unregisters the event handler, | |
1221 | * waits for all in-progress workqueue elements and cleans | |
1222 | * up the GID cache. This function should be called after | |
1223 | * the device was removed from the devices list and all | |
1224 | * clients were removed, so the cache exists but is | |
1225 | * non-functional and shouldn't be updated anymore. | |
1226 | */ | |
1227 | ib_unregister_event_handler(&device->cache.event_handler); | |
1228 | flush_workqueue(ib_wq); | |
1229 | gid_table_cleanup_one(device); | |
1230 | } | |
1da177e4 | 1231 | |
03db3a2d | 1232 | void __init ib_cache_setup(void) |
1da177e4 | 1233 | { |
03db3a2d | 1234 | roce_gid_mgmt_init(); |
1da177e4 LT |
1235 | } |
1236 | ||
1237 | void __exit ib_cache_cleanup(void) | |
1238 | { | |
03db3a2d | 1239 | roce_gid_mgmt_cleanup(); |
1da177e4 | 1240 | } |