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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. | |
3 | * Copyright (c) 2004 Infinicon Corporation. All rights reserved. | |
4 | * Copyright (c) 2004 Intel Corporation. All rights reserved. | |
5 | * Copyright (c) 2004 Topspin Corporation. All rights reserved. | |
6 | * Copyright (c) 2004 Voltaire Corporation. All rights reserved. | |
2a1d9b7f | 7 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
33b9b3ee | 8 | * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. |
1da177e4 LT |
9 | * |
10 | * This software is available to you under a choice of one of two | |
11 | * licenses. You may choose to be licensed under the terms of the GNU | |
12 | * General Public License (GPL) Version 2, available from the file | |
13 | * COPYING in the main directory of this source tree, or the | |
14 | * OpenIB.org BSD license below: | |
15 | * | |
16 | * Redistribution and use in source and binary forms, with or | |
17 | * without modification, are permitted provided that the following | |
18 | * conditions are met: | |
19 | * | |
20 | * - Redistributions of source code must retain the above | |
21 | * copyright notice, this list of conditions and the following | |
22 | * disclaimer. | |
23 | * | |
24 | * - Redistributions in binary form must reproduce the above | |
25 | * copyright notice, this list of conditions and the following | |
26 | * disclaimer in the documentation and/or other materials | |
27 | * provided with the distribution. | |
28 | * | |
29 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
30 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
31 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
32 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
33 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
34 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
35 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
36 | * SOFTWARE. | |
1da177e4 LT |
37 | */ |
38 | ||
39 | #include <linux/errno.h> | |
40 | #include <linux/err.h> | |
b108d976 | 41 | #include <linux/export.h> |
8c65b4a6 | 42 | #include <linux/string.h> |
0e0ec7e0 | 43 | #include <linux/slab.h> |
dbf727de MB |
44 | #include <linux/in.h> |
45 | #include <linux/in6.h> | |
46 | #include <net/addrconf.h> | |
d291f1a6 | 47 | #include <linux/security.h> |
1da177e4 | 48 | |
a4d61e84 RD |
49 | #include <rdma/ib_verbs.h> |
50 | #include <rdma/ib_cache.h> | |
dd5f03be | 51 | #include <rdma/ib_addr.h> |
a060b562 | 52 | #include <rdma/rw.h> |
1da177e4 | 53 | |
ed4c54e5 | 54 | #include "core_priv.h" |
1da177e4 | 55 | |
c0348eb0 PP |
56 | static int ib_resolve_eth_dmac(struct ib_device *device, |
57 | struct rdma_ah_attr *ah_attr); | |
58 | ||
2b1b5b60 SG |
59 | static const char * const ib_events[] = { |
60 | [IB_EVENT_CQ_ERR] = "CQ error", | |
61 | [IB_EVENT_QP_FATAL] = "QP fatal error", | |
62 | [IB_EVENT_QP_REQ_ERR] = "QP request error", | |
63 | [IB_EVENT_QP_ACCESS_ERR] = "QP access error", | |
64 | [IB_EVENT_COMM_EST] = "communication established", | |
65 | [IB_EVENT_SQ_DRAINED] = "send queue drained", | |
66 | [IB_EVENT_PATH_MIG] = "path migration successful", | |
67 | [IB_EVENT_PATH_MIG_ERR] = "path migration error", | |
68 | [IB_EVENT_DEVICE_FATAL] = "device fatal error", | |
69 | [IB_EVENT_PORT_ACTIVE] = "port active", | |
70 | [IB_EVENT_PORT_ERR] = "port error", | |
71 | [IB_EVENT_LID_CHANGE] = "LID change", | |
72 | [IB_EVENT_PKEY_CHANGE] = "P_key change", | |
73 | [IB_EVENT_SM_CHANGE] = "SM change", | |
74 | [IB_EVENT_SRQ_ERR] = "SRQ error", | |
75 | [IB_EVENT_SRQ_LIMIT_REACHED] = "SRQ limit reached", | |
76 | [IB_EVENT_QP_LAST_WQE_REACHED] = "last WQE reached", | |
77 | [IB_EVENT_CLIENT_REREGISTER] = "client reregister", | |
78 | [IB_EVENT_GID_CHANGE] = "GID changed", | |
79 | }; | |
80 | ||
db7489e0 | 81 | const char *__attribute_const__ ib_event_msg(enum ib_event_type event) |
2b1b5b60 SG |
82 | { |
83 | size_t index = event; | |
84 | ||
85 | return (index < ARRAY_SIZE(ib_events) && ib_events[index]) ? | |
86 | ib_events[index] : "unrecognized event"; | |
87 | } | |
88 | EXPORT_SYMBOL(ib_event_msg); | |
89 | ||
90 | static const char * const wc_statuses[] = { | |
91 | [IB_WC_SUCCESS] = "success", | |
92 | [IB_WC_LOC_LEN_ERR] = "local length error", | |
93 | [IB_WC_LOC_QP_OP_ERR] = "local QP operation error", | |
94 | [IB_WC_LOC_EEC_OP_ERR] = "local EE context operation error", | |
95 | [IB_WC_LOC_PROT_ERR] = "local protection error", | |
96 | [IB_WC_WR_FLUSH_ERR] = "WR flushed", | |
97 | [IB_WC_MW_BIND_ERR] = "memory management operation error", | |
98 | [IB_WC_BAD_RESP_ERR] = "bad response error", | |
99 | [IB_WC_LOC_ACCESS_ERR] = "local access error", | |
100 | [IB_WC_REM_INV_REQ_ERR] = "invalid request error", | |
101 | [IB_WC_REM_ACCESS_ERR] = "remote access error", | |
102 | [IB_WC_REM_OP_ERR] = "remote operation error", | |
103 | [IB_WC_RETRY_EXC_ERR] = "transport retry counter exceeded", | |
104 | [IB_WC_RNR_RETRY_EXC_ERR] = "RNR retry counter exceeded", | |
105 | [IB_WC_LOC_RDD_VIOL_ERR] = "local RDD violation error", | |
106 | [IB_WC_REM_INV_RD_REQ_ERR] = "remote invalid RD request", | |
107 | [IB_WC_REM_ABORT_ERR] = "operation aborted", | |
108 | [IB_WC_INV_EECN_ERR] = "invalid EE context number", | |
109 | [IB_WC_INV_EEC_STATE_ERR] = "invalid EE context state", | |
110 | [IB_WC_FATAL_ERR] = "fatal error", | |
111 | [IB_WC_RESP_TIMEOUT_ERR] = "response timeout error", | |
112 | [IB_WC_GENERAL_ERR] = "general error", | |
113 | }; | |
114 | ||
db7489e0 | 115 | const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status) |
2b1b5b60 SG |
116 | { |
117 | size_t index = status; | |
118 | ||
119 | return (index < ARRAY_SIZE(wc_statuses) && wc_statuses[index]) ? | |
120 | wc_statuses[index] : "unrecognized status"; | |
121 | } | |
122 | EXPORT_SYMBOL(ib_wc_status_msg); | |
123 | ||
8385fd84 | 124 | __attribute_const__ int ib_rate_to_mult(enum ib_rate rate) |
bf6a9e31 JM |
125 | { |
126 | switch (rate) { | |
e2dda368 HWR |
127 | case IB_RATE_2_5_GBPS: return 1; |
128 | case IB_RATE_5_GBPS: return 2; | |
129 | case IB_RATE_10_GBPS: return 4; | |
130 | case IB_RATE_20_GBPS: return 8; | |
131 | case IB_RATE_30_GBPS: return 12; | |
132 | case IB_RATE_40_GBPS: return 16; | |
133 | case IB_RATE_60_GBPS: return 24; | |
134 | case IB_RATE_80_GBPS: return 32; | |
135 | case IB_RATE_120_GBPS: return 48; | |
136 | case IB_RATE_14_GBPS: return 6; | |
137 | case IB_RATE_56_GBPS: return 22; | |
138 | case IB_RATE_112_GBPS: return 45; | |
139 | case IB_RATE_168_GBPS: return 67; | |
140 | case IB_RATE_25_GBPS: return 10; | |
141 | case IB_RATE_100_GBPS: return 40; | |
142 | case IB_RATE_200_GBPS: return 80; | |
143 | case IB_RATE_300_GBPS: return 120; | |
a5a5d199 MG |
144 | case IB_RATE_28_GBPS: return 11; |
145 | case IB_RATE_50_GBPS: return 20; | |
146 | case IB_RATE_400_GBPS: return 160; | |
147 | case IB_RATE_600_GBPS: return 240; | |
e2dda368 | 148 | default: return -1; |
bf6a9e31 JM |
149 | } |
150 | } | |
151 | EXPORT_SYMBOL(ib_rate_to_mult); | |
152 | ||
8385fd84 | 153 | __attribute_const__ enum ib_rate mult_to_ib_rate(int mult) |
bf6a9e31 JM |
154 | { |
155 | switch (mult) { | |
e2dda368 HWR |
156 | case 1: return IB_RATE_2_5_GBPS; |
157 | case 2: return IB_RATE_5_GBPS; | |
158 | case 4: return IB_RATE_10_GBPS; | |
159 | case 8: return IB_RATE_20_GBPS; | |
160 | case 12: return IB_RATE_30_GBPS; | |
161 | case 16: return IB_RATE_40_GBPS; | |
162 | case 24: return IB_RATE_60_GBPS; | |
163 | case 32: return IB_RATE_80_GBPS; | |
164 | case 48: return IB_RATE_120_GBPS; | |
165 | case 6: return IB_RATE_14_GBPS; | |
166 | case 22: return IB_RATE_56_GBPS; | |
167 | case 45: return IB_RATE_112_GBPS; | |
168 | case 67: return IB_RATE_168_GBPS; | |
169 | case 10: return IB_RATE_25_GBPS; | |
170 | case 40: return IB_RATE_100_GBPS; | |
171 | case 80: return IB_RATE_200_GBPS; | |
172 | case 120: return IB_RATE_300_GBPS; | |
a5a5d199 MG |
173 | case 11: return IB_RATE_28_GBPS; |
174 | case 20: return IB_RATE_50_GBPS; | |
175 | case 160: return IB_RATE_400_GBPS; | |
176 | case 240: return IB_RATE_600_GBPS; | |
e2dda368 | 177 | default: return IB_RATE_PORT_CURRENT; |
bf6a9e31 JM |
178 | } |
179 | } | |
180 | EXPORT_SYMBOL(mult_to_ib_rate); | |
181 | ||
8385fd84 | 182 | __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate) |
71eeba16 MA |
183 | { |
184 | switch (rate) { | |
185 | case IB_RATE_2_5_GBPS: return 2500; | |
186 | case IB_RATE_5_GBPS: return 5000; | |
187 | case IB_RATE_10_GBPS: return 10000; | |
188 | case IB_RATE_20_GBPS: return 20000; | |
189 | case IB_RATE_30_GBPS: return 30000; | |
190 | case IB_RATE_40_GBPS: return 40000; | |
191 | case IB_RATE_60_GBPS: return 60000; | |
192 | case IB_RATE_80_GBPS: return 80000; | |
193 | case IB_RATE_120_GBPS: return 120000; | |
194 | case IB_RATE_14_GBPS: return 14062; | |
195 | case IB_RATE_56_GBPS: return 56250; | |
196 | case IB_RATE_112_GBPS: return 112500; | |
197 | case IB_RATE_168_GBPS: return 168750; | |
198 | case IB_RATE_25_GBPS: return 25781; | |
199 | case IB_RATE_100_GBPS: return 103125; | |
200 | case IB_RATE_200_GBPS: return 206250; | |
201 | case IB_RATE_300_GBPS: return 309375; | |
a5a5d199 MG |
202 | case IB_RATE_28_GBPS: return 28125; |
203 | case IB_RATE_50_GBPS: return 53125; | |
204 | case IB_RATE_400_GBPS: return 425000; | |
205 | case IB_RATE_600_GBPS: return 637500; | |
71eeba16 MA |
206 | default: return -1; |
207 | } | |
208 | } | |
209 | EXPORT_SYMBOL(ib_rate_to_mbps); | |
210 | ||
8385fd84 | 211 | __attribute_const__ enum rdma_transport_type |
07ebafba TT |
212 | rdma_node_get_transport(enum rdma_node_type node_type) |
213 | { | |
cdc596d8 LR |
214 | |
215 | if (node_type == RDMA_NODE_USNIC) | |
5db5765e | 216 | return RDMA_TRANSPORT_USNIC; |
cdc596d8 | 217 | if (node_type == RDMA_NODE_USNIC_UDP) |
248567f7 | 218 | return RDMA_TRANSPORT_USNIC_UDP; |
cdc596d8 LR |
219 | if (node_type == RDMA_NODE_RNIC) |
220 | return RDMA_TRANSPORT_IWARP; | |
221 | ||
222 | return RDMA_TRANSPORT_IB; | |
07ebafba TT |
223 | } |
224 | EXPORT_SYMBOL(rdma_node_get_transport); | |
225 | ||
a3f5adaf EC |
226 | enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) |
227 | { | |
82901e3e | 228 | enum rdma_transport_type lt; |
3023a1e9 KH |
229 | if (device->ops.get_link_layer) |
230 | return device->ops.get_link_layer(device, port_num); | |
a3f5adaf | 231 | |
82901e3e LR |
232 | lt = rdma_node_get_transport(device->node_type); |
233 | if (lt == RDMA_TRANSPORT_IB) | |
a3f5adaf | 234 | return IB_LINK_LAYER_INFINIBAND; |
82901e3e LR |
235 | |
236 | return IB_LINK_LAYER_ETHERNET; | |
a3f5adaf EC |
237 | } |
238 | EXPORT_SYMBOL(rdma_port_get_link_layer); | |
239 | ||
1da177e4 LT |
240 | /* Protection domains */ |
241 | ||
96249d70 JG |
242 | /** |
243 | * ib_alloc_pd - Allocates an unused protection domain. | |
244 | * @device: The device on which to allocate the protection domain. | |
245 | * | |
246 | * A protection domain object provides an association between QPs, shared | |
247 | * receive queues, address handles, memory regions, and memory windows. | |
248 | * | |
249 | * Every PD has a local_dma_lkey which can be used as the lkey value for local | |
250 | * memory operations. | |
251 | */ | |
ed082d36 CH |
252 | struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, |
253 | const char *caller) | |
1da177e4 LT |
254 | { |
255 | struct ib_pd *pd; | |
ed082d36 | 256 | int mr_access_flags = 0; |
21a428a0 | 257 | int ret; |
1da177e4 | 258 | |
21a428a0 LR |
259 | pd = rdma_zalloc_drv_obj(device, ib_pd); |
260 | if (!pd) | |
261 | return ERR_PTR(-ENOMEM); | |
1da177e4 | 262 | |
96249d70 JG |
263 | pd->device = device; |
264 | pd->uobject = NULL; | |
50d46335 | 265 | pd->__internal_mr = NULL; |
96249d70 | 266 | atomic_set(&pd->usecnt, 0); |
ed082d36 | 267 | pd->flags = flags; |
1da177e4 | 268 | |
21a428a0 LR |
269 | pd->res.type = RDMA_RESTRACK_PD; |
270 | rdma_restrack_set_task(&pd->res, caller); | |
271 | ||
272 | ret = device->ops.alloc_pd(pd, NULL, NULL); | |
273 | if (ret) { | |
274 | kfree(pd); | |
275 | return ERR_PTR(ret); | |
276 | } | |
277 | rdma_restrack_kadd(&pd->res); | |
278 | ||
86bee4c9 | 279 | if (device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY) |
96249d70 | 280 | pd->local_dma_lkey = device->local_dma_lkey; |
ed082d36 CH |
281 | else |
282 | mr_access_flags |= IB_ACCESS_LOCAL_WRITE; | |
283 | ||
284 | if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) { | |
285 | pr_warn("%s: enabling unsafe global rkey\n", caller); | |
286 | mr_access_flags |= IB_ACCESS_REMOTE_READ | IB_ACCESS_REMOTE_WRITE; | |
287 | } | |
288 | ||
289 | if (mr_access_flags) { | |
96249d70 JG |
290 | struct ib_mr *mr; |
291 | ||
3023a1e9 | 292 | mr = pd->device->ops.get_dma_mr(pd, mr_access_flags); |
96249d70 JG |
293 | if (IS_ERR(mr)) { |
294 | ib_dealloc_pd(pd); | |
5ef990f0 | 295 | return ERR_CAST(mr); |
96249d70 | 296 | } |
1da177e4 | 297 | |
5ef990f0 CH |
298 | mr->device = pd->device; |
299 | mr->pd = pd; | |
300 | mr->uobject = NULL; | |
301 | mr->need_inval = false; | |
302 | ||
50d46335 | 303 | pd->__internal_mr = mr; |
ed082d36 CH |
304 | |
305 | if (!(device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) | |
306 | pd->local_dma_lkey = pd->__internal_mr->lkey; | |
307 | ||
308 | if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) | |
309 | pd->unsafe_global_rkey = pd->__internal_mr->rkey; | |
1da177e4 | 310 | } |
ed082d36 | 311 | |
1da177e4 LT |
312 | return pd; |
313 | } | |
ed082d36 | 314 | EXPORT_SYMBOL(__ib_alloc_pd); |
1da177e4 | 315 | |
7dd78647 JG |
316 | /** |
317 | * ib_dealloc_pd - Deallocates a protection domain. | |
318 | * @pd: The protection domain to deallocate. | |
319 | * | |
320 | * It is an error to call this function while any resources in the pd still | |
321 | * exist. The caller is responsible to synchronously destroy them and | |
322 | * guarantee no new allocations will happen. | |
323 | */ | |
324 | void ib_dealloc_pd(struct ib_pd *pd) | |
1da177e4 | 325 | { |
7dd78647 JG |
326 | int ret; |
327 | ||
50d46335 | 328 | if (pd->__internal_mr) { |
3023a1e9 | 329 | ret = pd->device->ops.dereg_mr(pd->__internal_mr); |
7dd78647 | 330 | WARN_ON(ret); |
50d46335 | 331 | pd->__internal_mr = NULL; |
96249d70 | 332 | } |
1da177e4 | 333 | |
7dd78647 JG |
334 | /* uverbs manipulates usecnt with proper locking, while the kabi |
335 | requires the caller to guarantee we can't race here. */ | |
336 | WARN_ON(atomic_read(&pd->usecnt)); | |
1da177e4 | 337 | |
9d5f8c20 | 338 | rdma_restrack_del(&pd->res); |
21a428a0 LR |
339 | pd->device->ops.dealloc_pd(pd); |
340 | kfree(pd); | |
1da177e4 LT |
341 | } |
342 | EXPORT_SYMBOL(ib_dealloc_pd); | |
343 | ||
344 | /* Address handles */ | |
345 | ||
d97099fe JG |
346 | /** |
347 | * rdma_copy_ah_attr - Copy rdma ah attribute from source to destination. | |
348 | * @dest: Pointer to destination ah_attr. Contents of the destination | |
349 | * pointer is assumed to be invalid and attribute are overwritten. | |
350 | * @src: Pointer to source ah_attr. | |
351 | */ | |
352 | void rdma_copy_ah_attr(struct rdma_ah_attr *dest, | |
353 | const struct rdma_ah_attr *src) | |
354 | { | |
355 | *dest = *src; | |
356 | if (dest->grh.sgid_attr) | |
357 | rdma_hold_gid_attr(dest->grh.sgid_attr); | |
358 | } | |
359 | EXPORT_SYMBOL(rdma_copy_ah_attr); | |
360 | ||
361 | /** | |
362 | * rdma_replace_ah_attr - Replace valid ah_attr with new new one. | |
363 | * @old: Pointer to existing ah_attr which needs to be replaced. | |
364 | * old is assumed to be valid or zero'd | |
365 | * @new: Pointer to the new ah_attr. | |
366 | * | |
367 | * rdma_replace_ah_attr() first releases any reference in the old ah_attr if | |
368 | * old the ah_attr is valid; after that it copies the new attribute and holds | |
369 | * the reference to the replaced ah_attr. | |
370 | */ | |
371 | void rdma_replace_ah_attr(struct rdma_ah_attr *old, | |
372 | const struct rdma_ah_attr *new) | |
373 | { | |
374 | rdma_destroy_ah_attr(old); | |
375 | *old = *new; | |
376 | if (old->grh.sgid_attr) | |
377 | rdma_hold_gid_attr(old->grh.sgid_attr); | |
378 | } | |
379 | EXPORT_SYMBOL(rdma_replace_ah_attr); | |
380 | ||
381 | /** | |
382 | * rdma_move_ah_attr - Move ah_attr pointed by source to destination. | |
383 | * @dest: Pointer to destination ah_attr to copy to. | |
384 | * dest is assumed to be valid or zero'd | |
385 | * @src: Pointer to the new ah_attr. | |
386 | * | |
387 | * rdma_move_ah_attr() first releases any reference in the destination ah_attr | |
388 | * if it is valid. This also transfers ownership of internal references from | |
389 | * src to dest, making src invalid in the process. No new reference of the src | |
390 | * ah_attr is taken. | |
391 | */ | |
392 | void rdma_move_ah_attr(struct rdma_ah_attr *dest, struct rdma_ah_attr *src) | |
393 | { | |
394 | rdma_destroy_ah_attr(dest); | |
395 | *dest = *src; | |
396 | src->grh.sgid_attr = NULL; | |
397 | } | |
398 | EXPORT_SYMBOL(rdma_move_ah_attr); | |
399 | ||
8d9ec9ad JG |
400 | /* |
401 | * Validate that the rdma_ah_attr is valid for the device before passing it | |
402 | * off to the driver. | |
403 | */ | |
404 | static int rdma_check_ah_attr(struct ib_device *device, | |
405 | struct rdma_ah_attr *ah_attr) | |
406 | { | |
407 | if (!rdma_is_port_valid(device, ah_attr->port_num)) | |
408 | return -EINVAL; | |
409 | ||
b02289b3 AK |
410 | if ((rdma_is_grh_required(device, ah_attr->port_num) || |
411 | ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) && | |
8d9ec9ad JG |
412 | !(ah_attr->ah_flags & IB_AH_GRH)) |
413 | return -EINVAL; | |
414 | ||
415 | if (ah_attr->grh.sgid_attr) { | |
416 | /* | |
417 | * Make sure the passed sgid_attr is consistent with the | |
418 | * parameters | |
419 | */ | |
420 | if (ah_attr->grh.sgid_attr->index != ah_attr->grh.sgid_index || | |
421 | ah_attr->grh.sgid_attr->port_num != ah_attr->port_num) | |
422 | return -EINVAL; | |
423 | } | |
424 | return 0; | |
425 | } | |
426 | ||
427 | /* | |
428 | * If the ah requires a GRH then ensure that sgid_attr pointer is filled in. | |
429 | * On success the caller is responsible to call rdma_unfill_sgid_attr(). | |
430 | */ | |
431 | static int rdma_fill_sgid_attr(struct ib_device *device, | |
432 | struct rdma_ah_attr *ah_attr, | |
433 | const struct ib_gid_attr **old_sgid_attr) | |
434 | { | |
435 | const struct ib_gid_attr *sgid_attr; | |
436 | struct ib_global_route *grh; | |
437 | int ret; | |
438 | ||
439 | *old_sgid_attr = ah_attr->grh.sgid_attr; | |
440 | ||
441 | ret = rdma_check_ah_attr(device, ah_attr); | |
442 | if (ret) | |
443 | return ret; | |
444 | ||
445 | if (!(ah_attr->ah_flags & IB_AH_GRH)) | |
446 | return 0; | |
447 | ||
448 | grh = rdma_ah_retrieve_grh(ah_attr); | |
449 | if (grh->sgid_attr) | |
450 | return 0; | |
451 | ||
452 | sgid_attr = | |
453 | rdma_get_gid_attr(device, ah_attr->port_num, grh->sgid_index); | |
454 | if (IS_ERR(sgid_attr)) | |
455 | return PTR_ERR(sgid_attr); | |
456 | ||
457 | /* Move ownerhip of the kref into the ah_attr */ | |
458 | grh->sgid_attr = sgid_attr; | |
459 | return 0; | |
460 | } | |
461 | ||
462 | static void rdma_unfill_sgid_attr(struct rdma_ah_attr *ah_attr, | |
463 | const struct ib_gid_attr *old_sgid_attr) | |
464 | { | |
465 | /* | |
466 | * Fill didn't change anything, the caller retains ownership of | |
467 | * whatever it passed | |
468 | */ | |
469 | if (ah_attr->grh.sgid_attr == old_sgid_attr) | |
470 | return; | |
471 | ||
472 | /* | |
473 | * Otherwise, we need to undo what rdma_fill_sgid_attr so the caller | |
474 | * doesn't see any change in the rdma_ah_attr. If we get here | |
475 | * old_sgid_attr is NULL. | |
476 | */ | |
477 | rdma_destroy_ah_attr(ah_attr); | |
478 | } | |
479 | ||
1a1f460f JG |
480 | static const struct ib_gid_attr * |
481 | rdma_update_sgid_attr(struct rdma_ah_attr *ah_attr, | |
482 | const struct ib_gid_attr *old_attr) | |
483 | { | |
484 | if (old_attr) | |
485 | rdma_put_gid_attr(old_attr); | |
486 | if (ah_attr->ah_flags & IB_AH_GRH) { | |
487 | rdma_hold_gid_attr(ah_attr->grh.sgid_attr); | |
488 | return ah_attr->grh.sgid_attr; | |
489 | } | |
490 | return NULL; | |
491 | } | |
492 | ||
5cda6587 PP |
493 | static struct ib_ah *_rdma_create_ah(struct ib_pd *pd, |
494 | struct rdma_ah_attr *ah_attr, | |
b090c4e3 | 495 | u32 flags, |
5cda6587 | 496 | struct ib_udata *udata) |
1da177e4 LT |
497 | { |
498 | struct ib_ah *ah; | |
499 | ||
b090c4e3 GP |
500 | might_sleep_if(flags & RDMA_CREATE_AH_SLEEPABLE); |
501 | ||
3023a1e9 | 502 | if (!pd->device->ops.create_ah) |
0584c47b KH |
503 | return ERR_PTR(-EOPNOTSUPP); |
504 | ||
b090c4e3 | 505 | ah = pd->device->ops.create_ah(pd, ah_attr, flags, udata); |
1da177e4 LT |
506 | |
507 | if (!IS_ERR(ah)) { | |
b5e81bf5 RD |
508 | ah->device = pd->device; |
509 | ah->pd = pd; | |
510 | ah->uobject = NULL; | |
44c58487 | 511 | ah->type = ah_attr->type; |
1a1f460f JG |
512 | ah->sgid_attr = rdma_update_sgid_attr(ah_attr, NULL); |
513 | ||
1da177e4 LT |
514 | atomic_inc(&pd->usecnt); |
515 | } | |
516 | ||
517 | return ah; | |
518 | } | |
5cda6587 | 519 | |
8d9ec9ad JG |
520 | /** |
521 | * rdma_create_ah - Creates an address handle for the | |
522 | * given address vector. | |
523 | * @pd: The protection domain associated with the address handle. | |
524 | * @ah_attr: The attributes of the address vector. | |
b090c4e3 | 525 | * @flags: Create address handle flags (see enum rdma_create_ah_flags). |
8d9ec9ad JG |
526 | * |
527 | * It returns 0 on success and returns appropriate error code on error. | |
528 | * The address handle is used to reference a local or global destination | |
529 | * in all UD QP post sends. | |
530 | */ | |
b090c4e3 GP |
531 | struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr, |
532 | u32 flags) | |
5cda6587 | 533 | { |
8d9ec9ad JG |
534 | const struct ib_gid_attr *old_sgid_attr; |
535 | struct ib_ah *ah; | |
536 | int ret; | |
537 | ||
538 | ret = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); | |
539 | if (ret) | |
540 | return ERR_PTR(ret); | |
541 | ||
b090c4e3 | 542 | ah = _rdma_create_ah(pd, ah_attr, flags, NULL); |
8d9ec9ad JG |
543 | |
544 | rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); | |
545 | return ah; | |
5cda6587 | 546 | } |
0a18cfe4 | 547 | EXPORT_SYMBOL(rdma_create_ah); |
1da177e4 | 548 | |
5cda6587 PP |
549 | /** |
550 | * rdma_create_user_ah - Creates an address handle for the | |
551 | * given address vector. | |
552 | * It resolves destination mac address for ah attribute of RoCE type. | |
553 | * @pd: The protection domain associated with the address handle. | |
554 | * @ah_attr: The attributes of the address vector. | |
555 | * @udata: pointer to user's input output buffer information need by | |
556 | * provider driver. | |
557 | * | |
558 | * It returns 0 on success and returns appropriate error code on error. | |
559 | * The address handle is used to reference a local or global destination | |
560 | * in all UD QP post sends. | |
561 | */ | |
562 | struct ib_ah *rdma_create_user_ah(struct ib_pd *pd, | |
563 | struct rdma_ah_attr *ah_attr, | |
564 | struct ib_udata *udata) | |
565 | { | |
8d9ec9ad JG |
566 | const struct ib_gid_attr *old_sgid_attr; |
567 | struct ib_ah *ah; | |
5cda6587 PP |
568 | int err; |
569 | ||
8d9ec9ad JG |
570 | err = rdma_fill_sgid_attr(pd->device, ah_attr, &old_sgid_attr); |
571 | if (err) | |
572 | return ERR_PTR(err); | |
573 | ||
5cda6587 PP |
574 | if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) { |
575 | err = ib_resolve_eth_dmac(pd->device, ah_attr); | |
8d9ec9ad JG |
576 | if (err) { |
577 | ah = ERR_PTR(err); | |
578 | goto out; | |
579 | } | |
5cda6587 PP |
580 | } |
581 | ||
b090c4e3 | 582 | ah = _rdma_create_ah(pd, ah_attr, RDMA_CREATE_AH_SLEEPABLE, udata); |
8d9ec9ad JG |
583 | |
584 | out: | |
585 | rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); | |
586 | return ah; | |
5cda6587 PP |
587 | } |
588 | EXPORT_SYMBOL(rdma_create_user_ah); | |
589 | ||
850d8fd7 | 590 | int ib_get_rdma_header_version(const union rdma_network_hdr *hdr) |
c865f246 SK |
591 | { |
592 | const struct iphdr *ip4h = (struct iphdr *)&hdr->roce4grh; | |
593 | struct iphdr ip4h_checked; | |
594 | const struct ipv6hdr *ip6h = (struct ipv6hdr *)&hdr->ibgrh; | |
595 | ||
596 | /* If it's IPv6, the version must be 6, otherwise, the first | |
597 | * 20 bytes (before the IPv4 header) are garbled. | |
598 | */ | |
599 | if (ip6h->version != 6) | |
600 | return (ip4h->version == 4) ? 4 : 0; | |
601 | /* version may be 6 or 4 because the first 20 bytes could be garbled */ | |
602 | ||
603 | /* RoCE v2 requires no options, thus header length | |
604 | * must be 5 words | |
605 | */ | |
606 | if (ip4h->ihl != 5) | |
607 | return 6; | |
608 | ||
609 | /* Verify checksum. | |
610 | * We can't write on scattered buffers so we need to copy to | |
611 | * temp buffer. | |
612 | */ | |
613 | memcpy(&ip4h_checked, ip4h, sizeof(ip4h_checked)); | |
614 | ip4h_checked.check = 0; | |
615 | ip4h_checked.check = ip_fast_csum((u8 *)&ip4h_checked, 5); | |
616 | /* if IPv4 header checksum is OK, believe it */ | |
617 | if (ip4h->check == ip4h_checked.check) | |
618 | return 4; | |
619 | return 6; | |
620 | } | |
850d8fd7 | 621 | EXPORT_SYMBOL(ib_get_rdma_header_version); |
c865f246 SK |
622 | |
623 | static enum rdma_network_type ib_get_net_type_by_grh(struct ib_device *device, | |
624 | u8 port_num, | |
625 | const struct ib_grh *grh) | |
626 | { | |
627 | int grh_version; | |
628 | ||
629 | if (rdma_protocol_ib(device, port_num)) | |
630 | return RDMA_NETWORK_IB; | |
631 | ||
850d8fd7 | 632 | grh_version = ib_get_rdma_header_version((union rdma_network_hdr *)grh); |
c865f246 SK |
633 | |
634 | if (grh_version == 4) | |
635 | return RDMA_NETWORK_IPV4; | |
636 | ||
637 | if (grh->next_hdr == IPPROTO_UDP) | |
638 | return RDMA_NETWORK_IPV6; | |
639 | ||
640 | return RDMA_NETWORK_ROCE_V1; | |
641 | } | |
642 | ||
dbf727de MB |
643 | struct find_gid_index_context { |
644 | u16 vlan_id; | |
c865f246 | 645 | enum ib_gid_type gid_type; |
dbf727de MB |
646 | }; |
647 | ||
648 | static bool find_gid_index(const union ib_gid *gid, | |
649 | const struct ib_gid_attr *gid_attr, | |
650 | void *context) | |
651 | { | |
b0dd0d33 | 652 | struct find_gid_index_context *ctx = context; |
dbf727de | 653 | |
c865f246 SK |
654 | if (ctx->gid_type != gid_attr->gid_type) |
655 | return false; | |
656 | ||
dbf727de MB |
657 | if ((!!(ctx->vlan_id != 0xffff) == !is_vlan_dev(gid_attr->ndev)) || |
658 | (is_vlan_dev(gid_attr->ndev) && | |
659 | vlan_dev_vlan_id(gid_attr->ndev) != ctx->vlan_id)) | |
660 | return false; | |
661 | ||
662 | return true; | |
663 | } | |
664 | ||
b7403217 PP |
665 | static const struct ib_gid_attr * |
666 | get_sgid_attr_from_eth(struct ib_device *device, u8 port_num, | |
667 | u16 vlan_id, const union ib_gid *sgid, | |
668 | enum ib_gid_type gid_type) | |
dbf727de | 669 | { |
c865f246 SK |
670 | struct find_gid_index_context context = {.vlan_id = vlan_id, |
671 | .gid_type = gid_type}; | |
dbf727de | 672 | |
b7403217 PP |
673 | return rdma_find_gid_by_filter(device, sgid, port_num, find_gid_index, |
674 | &context); | |
dbf727de MB |
675 | } |
676 | ||
850d8fd7 MS |
677 | int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, |
678 | enum rdma_network_type net_type, | |
679 | union ib_gid *sgid, union ib_gid *dgid) | |
c865f246 SK |
680 | { |
681 | struct sockaddr_in src_in; | |
682 | struct sockaddr_in dst_in; | |
683 | __be32 src_saddr, dst_saddr; | |
684 | ||
685 | if (!sgid || !dgid) | |
686 | return -EINVAL; | |
687 | ||
688 | if (net_type == RDMA_NETWORK_IPV4) { | |
689 | memcpy(&src_in.sin_addr.s_addr, | |
690 | &hdr->roce4grh.saddr, 4); | |
691 | memcpy(&dst_in.sin_addr.s_addr, | |
692 | &hdr->roce4grh.daddr, 4); | |
693 | src_saddr = src_in.sin_addr.s_addr; | |
694 | dst_saddr = dst_in.sin_addr.s_addr; | |
695 | ipv6_addr_set_v4mapped(src_saddr, | |
696 | (struct in6_addr *)sgid); | |
697 | ipv6_addr_set_v4mapped(dst_saddr, | |
698 | (struct in6_addr *)dgid); | |
699 | return 0; | |
700 | } else if (net_type == RDMA_NETWORK_IPV6 || | |
701 | net_type == RDMA_NETWORK_IB) { | |
702 | *dgid = hdr->ibgrh.dgid; | |
703 | *sgid = hdr->ibgrh.sgid; | |
704 | return 0; | |
705 | } else { | |
706 | return -EINVAL; | |
707 | } | |
708 | } | |
850d8fd7 | 709 | EXPORT_SYMBOL(ib_get_gids_from_rdma_hdr); |
c865f246 | 710 | |
1060f865 PP |
711 | /* Resolve destination mac address and hop limit for unicast destination |
712 | * GID entry, considering the source GID entry as well. | |
713 | * ah_attribute must have have valid port_num, sgid_index. | |
714 | */ | |
715 | static int ib_resolve_unicast_gid_dmac(struct ib_device *device, | |
716 | struct rdma_ah_attr *ah_attr) | |
717 | { | |
b7403217 PP |
718 | struct ib_global_route *grh = rdma_ah_retrieve_grh(ah_attr); |
719 | const struct ib_gid_attr *sgid_attr = grh->sgid_attr; | |
1060f865 | 720 | int hop_limit = 0xff; |
b7403217 | 721 | int ret = 0; |
1060f865 | 722 | |
56d0a7d9 PP |
723 | /* If destination is link local and source GID is RoCEv1, |
724 | * IP stack is not used. | |
725 | */ | |
726 | if (rdma_link_local_addr((struct in6_addr *)grh->dgid.raw) && | |
b7403217 | 727 | sgid_attr->gid_type == IB_GID_TYPE_ROCE) { |
56d0a7d9 PP |
728 | rdma_get_ll_mac((struct in6_addr *)grh->dgid.raw, |
729 | ah_attr->roce.dmac); | |
b7403217 | 730 | return ret; |
56d0a7d9 PP |
731 | } |
732 | ||
b7403217 | 733 | ret = rdma_addr_find_l2_eth_by_grh(&sgid_attr->gid, &grh->dgid, |
1060f865 | 734 | ah_attr->roce.dmac, |
0e9d2c19 | 735 | sgid_attr, &hop_limit); |
1060f865 PP |
736 | |
737 | grh->hop_limit = hop_limit; | |
738 | return ret; | |
739 | } | |
740 | ||
28b5b3a2 | 741 | /* |
f6bdb142 | 742 | * This function initializes address handle attributes from the incoming packet. |
28b5b3a2 GS |
743 | * Incoming packet has dgid of the receiver node on which this code is |
744 | * getting executed and, sgid contains the GID of the sender. | |
745 | * | |
746 | * When resolving mac address of destination, the arrived dgid is used | |
747 | * as sgid and, sgid is used as dgid because sgid contains destinations | |
748 | * GID whom to respond to. | |
749 | * | |
b7403217 PP |
750 | * On success the caller is responsible to call rdma_destroy_ah_attr on the |
751 | * attr. | |
28b5b3a2 | 752 | */ |
f6bdb142 PP |
753 | int ib_init_ah_attr_from_wc(struct ib_device *device, u8 port_num, |
754 | const struct ib_wc *wc, const struct ib_grh *grh, | |
755 | struct rdma_ah_attr *ah_attr) | |
513789ed | 756 | { |
513789ed | 757 | u32 flow_class; |
513789ed | 758 | int ret; |
c865f246 SK |
759 | enum rdma_network_type net_type = RDMA_NETWORK_IB; |
760 | enum ib_gid_type gid_type = IB_GID_TYPE_IB; | |
b7403217 | 761 | const struct ib_gid_attr *sgid_attr; |
c3efe750 | 762 | int hoplimit = 0xff; |
c865f246 SK |
763 | union ib_gid dgid; |
764 | union ib_gid sgid; | |
513789ed | 765 | |
79364227 RD |
766 | might_sleep(); |
767 | ||
4e00d694 | 768 | memset(ah_attr, 0, sizeof *ah_attr); |
44c58487 | 769 | ah_attr->type = rdma_ah_find_type(device, port_num); |
227128fc | 770 | if (rdma_cap_eth_ah(device, port_num)) { |
c865f246 SK |
771 | if (wc->wc_flags & IB_WC_WITH_NETWORK_HDR_TYPE) |
772 | net_type = wc->network_hdr_type; | |
773 | else | |
774 | net_type = ib_get_net_type_by_grh(device, port_num, grh); | |
775 | gid_type = ib_network_to_gid_type(net_type); | |
776 | } | |
850d8fd7 MS |
777 | ret = ib_get_gids_from_rdma_hdr((union rdma_network_hdr *)grh, net_type, |
778 | &sgid, &dgid); | |
c865f246 SK |
779 | if (ret) |
780 | return ret; | |
781 | ||
1060f865 PP |
782 | rdma_ah_set_sl(ah_attr, wc->sl); |
783 | rdma_ah_set_port_num(ah_attr, port_num); | |
784 | ||
c865f246 | 785 | if (rdma_protocol_roce(device, port_num)) { |
dbf727de MB |
786 | u16 vlan_id = wc->wc_flags & IB_WC_WITH_VLAN ? |
787 | wc->vlan_id : 0xffff; | |
788 | ||
dd5f03be MB |
789 | if (!(wc->wc_flags & IB_WC_GRH)) |
790 | return -EPROTOTYPE; | |
791 | ||
b7403217 PP |
792 | sgid_attr = get_sgid_attr_from_eth(device, port_num, |
793 | vlan_id, &dgid, | |
794 | gid_type); | |
795 | if (IS_ERR(sgid_attr)) | |
796 | return PTR_ERR(sgid_attr); | |
dd5f03be | 797 | |
1060f865 | 798 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
b7403217 PP |
799 | rdma_move_grh_sgid_attr(ah_attr, |
800 | &sgid, | |
801 | flow_class & 0xFFFFF, | |
802 | hoplimit, | |
803 | (flow_class >> 20) & 0xFF, | |
804 | sgid_attr); | |
805 | ||
806 | ret = ib_resolve_unicast_gid_dmac(device, ah_attr); | |
807 | if (ret) | |
808 | rdma_destroy_ah_attr(ah_attr); | |
809 | ||
810 | return ret; | |
1060f865 PP |
811 | } else { |
812 | rdma_ah_set_dlid(ah_attr, wc->slid); | |
813 | rdma_ah_set_path_bits(ah_attr, wc->dlid_path_bits); | |
513789ed | 814 | |
b7403217 PP |
815 | if ((wc->wc_flags & IB_WC_GRH) == 0) |
816 | return 0; | |
817 | ||
818 | if (dgid.global.interface_id != | |
819 | cpu_to_be64(IB_SA_WELL_KNOWN_GUID)) { | |
820 | sgid_attr = rdma_find_gid_by_port( | |
821 | device, &dgid, IB_GID_TYPE_IB, port_num, NULL); | |
822 | } else | |
823 | sgid_attr = rdma_get_gid_attr(device, port_num, 0); | |
824 | ||
825 | if (IS_ERR(sgid_attr)) | |
826 | return PTR_ERR(sgid_attr); | |
827 | flow_class = be32_to_cpu(grh->version_tclass_flow); | |
828 | rdma_move_grh_sgid_attr(ah_attr, | |
829 | &sgid, | |
1060f865 | 830 | flow_class & 0xFFFFF, |
b7403217 PP |
831 | hoplimit, |
832 | (flow_class >> 20) & 0xFF, | |
833 | sgid_attr); | |
834 | ||
1060f865 | 835 | return 0; |
513789ed | 836 | } |
4e00d694 | 837 | } |
f6bdb142 | 838 | EXPORT_SYMBOL(ib_init_ah_attr_from_wc); |
4e00d694 | 839 | |
8d9ec9ad JG |
840 | /** |
841 | * rdma_move_grh_sgid_attr - Sets the sgid attribute of GRH, taking ownership | |
842 | * of the reference | |
843 | * | |
844 | * @attr: Pointer to AH attribute structure | |
845 | * @dgid: Destination GID | |
846 | * @flow_label: Flow label | |
847 | * @hop_limit: Hop limit | |
848 | * @traffic_class: traffic class | |
849 | * @sgid_attr: Pointer to SGID attribute | |
850 | * | |
851 | * This takes ownership of the sgid_attr reference. The caller must ensure | |
852 | * rdma_destroy_ah_attr() is called before destroying the rdma_ah_attr after | |
853 | * calling this function. | |
854 | */ | |
855 | void rdma_move_grh_sgid_attr(struct rdma_ah_attr *attr, union ib_gid *dgid, | |
856 | u32 flow_label, u8 hop_limit, u8 traffic_class, | |
857 | const struct ib_gid_attr *sgid_attr) | |
858 | { | |
859 | rdma_ah_set_grh(attr, dgid, flow_label, sgid_attr->index, hop_limit, | |
860 | traffic_class); | |
861 | attr->grh.sgid_attr = sgid_attr; | |
862 | } | |
863 | EXPORT_SYMBOL(rdma_move_grh_sgid_attr); | |
864 | ||
865 | /** | |
866 | * rdma_destroy_ah_attr - Release reference to SGID attribute of | |
867 | * ah attribute. | |
868 | * @ah_attr: Pointer to ah attribute | |
869 | * | |
870 | * Release reference to the SGID attribute of the ah attribute if it is | |
871 | * non NULL. It is safe to call this multiple times, and safe to call it on | |
872 | * a zero initialized ah_attr. | |
873 | */ | |
874 | void rdma_destroy_ah_attr(struct rdma_ah_attr *ah_attr) | |
875 | { | |
876 | if (ah_attr->grh.sgid_attr) { | |
877 | rdma_put_gid_attr(ah_attr->grh.sgid_attr); | |
878 | ah_attr->grh.sgid_attr = NULL; | |
879 | } | |
880 | } | |
881 | EXPORT_SYMBOL(rdma_destroy_ah_attr); | |
882 | ||
73cdaaee IW |
883 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, |
884 | const struct ib_grh *grh, u8 port_num) | |
4e00d694 | 885 | { |
90898850 | 886 | struct rdma_ah_attr ah_attr; |
b7403217 | 887 | struct ib_ah *ah; |
4e00d694 SH |
888 | int ret; |
889 | ||
f6bdb142 | 890 | ret = ib_init_ah_attr_from_wc(pd->device, port_num, wc, grh, &ah_attr); |
4e00d694 SH |
891 | if (ret) |
892 | return ERR_PTR(ret); | |
513789ed | 893 | |
b090c4e3 | 894 | ah = rdma_create_ah(pd, &ah_attr, RDMA_CREATE_AH_SLEEPABLE); |
b7403217 PP |
895 | |
896 | rdma_destroy_ah_attr(&ah_attr); | |
897 | return ah; | |
513789ed HR |
898 | } |
899 | EXPORT_SYMBOL(ib_create_ah_from_wc); | |
900 | ||
67b985b6 | 901 | int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) |
1da177e4 | 902 | { |
8d9ec9ad JG |
903 | const struct ib_gid_attr *old_sgid_attr; |
904 | int ret; | |
905 | ||
44c58487 DC |
906 | if (ah->type != ah_attr->type) |
907 | return -EINVAL; | |
908 | ||
8d9ec9ad JG |
909 | ret = rdma_fill_sgid_attr(ah->device, ah_attr, &old_sgid_attr); |
910 | if (ret) | |
911 | return ret; | |
912 | ||
3023a1e9 KH |
913 | ret = ah->device->ops.modify_ah ? |
914 | ah->device->ops.modify_ah(ah, ah_attr) : | |
87915bf8 | 915 | -EOPNOTSUPP; |
8d9ec9ad | 916 | |
1a1f460f | 917 | ah->sgid_attr = rdma_update_sgid_attr(ah_attr, ah->sgid_attr); |
8d9ec9ad JG |
918 | rdma_unfill_sgid_attr(ah_attr, old_sgid_attr); |
919 | return ret; | |
1da177e4 | 920 | } |
67b985b6 | 921 | EXPORT_SYMBOL(rdma_modify_ah); |
1da177e4 | 922 | |
bfbfd661 | 923 | int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr) |
1da177e4 | 924 | { |
8d9ec9ad JG |
925 | ah_attr->grh.sgid_attr = NULL; |
926 | ||
3023a1e9 KH |
927 | return ah->device->ops.query_ah ? |
928 | ah->device->ops.query_ah(ah, ah_attr) : | |
87915bf8 | 929 | -EOPNOTSUPP; |
1da177e4 | 930 | } |
bfbfd661 | 931 | EXPORT_SYMBOL(rdma_query_ah); |
1da177e4 | 932 | |
2553ba21 | 933 | int rdma_destroy_ah(struct ib_ah *ah, u32 flags) |
1da177e4 | 934 | { |
1a1f460f | 935 | const struct ib_gid_attr *sgid_attr = ah->sgid_attr; |
1da177e4 LT |
936 | struct ib_pd *pd; |
937 | int ret; | |
938 | ||
2553ba21 GP |
939 | might_sleep_if(flags & RDMA_DESTROY_AH_SLEEPABLE); |
940 | ||
1da177e4 | 941 | pd = ah->pd; |
2553ba21 | 942 | ret = ah->device->ops.destroy_ah(ah, flags); |
1a1f460f | 943 | if (!ret) { |
1da177e4 | 944 | atomic_dec(&pd->usecnt); |
1a1f460f JG |
945 | if (sgid_attr) |
946 | rdma_put_gid_attr(sgid_attr); | |
947 | } | |
1da177e4 LT |
948 | |
949 | return ret; | |
950 | } | |
36523159 | 951 | EXPORT_SYMBOL(rdma_destroy_ah); |
1da177e4 | 952 | |
d41fcc67 RD |
953 | /* Shared receive queues */ |
954 | ||
955 | struct ib_srq *ib_create_srq(struct ib_pd *pd, | |
956 | struct ib_srq_init_attr *srq_init_attr) | |
957 | { | |
958 | struct ib_srq *srq; | |
959 | ||
3023a1e9 | 960 | if (!pd->device->ops.create_srq) |
87915bf8 | 961 | return ERR_PTR(-EOPNOTSUPP); |
d41fcc67 | 962 | |
3023a1e9 | 963 | srq = pd->device->ops.create_srq(pd, srq_init_attr, NULL); |
d41fcc67 RD |
964 | |
965 | if (!IS_ERR(srq)) { | |
966 | srq->device = pd->device; | |
967 | srq->pd = pd; | |
968 | srq->uobject = NULL; | |
969 | srq->event_handler = srq_init_attr->event_handler; | |
970 | srq->srq_context = srq_init_attr->srq_context; | |
96104eda | 971 | srq->srq_type = srq_init_attr->srq_type; |
1a56ff6d AK |
972 | if (ib_srq_has_cq(srq->srq_type)) { |
973 | srq->ext.cq = srq_init_attr->ext.cq; | |
974 | atomic_inc(&srq->ext.cq->usecnt); | |
975 | } | |
418d5130 SH |
976 | if (srq->srq_type == IB_SRQT_XRC) { |
977 | srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; | |
418d5130 | 978 | atomic_inc(&srq->ext.xrc.xrcd->usecnt); |
418d5130 | 979 | } |
d41fcc67 RD |
980 | atomic_inc(&pd->usecnt); |
981 | atomic_set(&srq->usecnt, 0); | |
982 | } | |
983 | ||
984 | return srq; | |
985 | } | |
986 | EXPORT_SYMBOL(ib_create_srq); | |
987 | ||
988 | int ib_modify_srq(struct ib_srq *srq, | |
989 | struct ib_srq_attr *srq_attr, | |
990 | enum ib_srq_attr_mask srq_attr_mask) | |
991 | { | |
3023a1e9 KH |
992 | return srq->device->ops.modify_srq ? |
993 | srq->device->ops.modify_srq(srq, srq_attr, srq_attr_mask, | |
994 | NULL) : -EOPNOTSUPP; | |
d41fcc67 RD |
995 | } |
996 | EXPORT_SYMBOL(ib_modify_srq); | |
997 | ||
998 | int ib_query_srq(struct ib_srq *srq, | |
999 | struct ib_srq_attr *srq_attr) | |
1000 | { | |
3023a1e9 KH |
1001 | return srq->device->ops.query_srq ? |
1002 | srq->device->ops.query_srq(srq, srq_attr) : -EOPNOTSUPP; | |
d41fcc67 RD |
1003 | } |
1004 | EXPORT_SYMBOL(ib_query_srq); | |
1005 | ||
1006 | int ib_destroy_srq(struct ib_srq *srq) | |
1007 | { | |
1008 | struct ib_pd *pd; | |
418d5130 SH |
1009 | enum ib_srq_type srq_type; |
1010 | struct ib_xrcd *uninitialized_var(xrcd); | |
1011 | struct ib_cq *uninitialized_var(cq); | |
d41fcc67 RD |
1012 | int ret; |
1013 | ||
1014 | if (atomic_read(&srq->usecnt)) | |
1015 | return -EBUSY; | |
1016 | ||
1017 | pd = srq->pd; | |
418d5130 | 1018 | srq_type = srq->srq_type; |
1a56ff6d AK |
1019 | if (ib_srq_has_cq(srq_type)) |
1020 | cq = srq->ext.cq; | |
1021 | if (srq_type == IB_SRQT_XRC) | |
418d5130 | 1022 | xrcd = srq->ext.xrc.xrcd; |
d41fcc67 | 1023 | |
3023a1e9 | 1024 | ret = srq->device->ops.destroy_srq(srq); |
418d5130 | 1025 | if (!ret) { |
d41fcc67 | 1026 | atomic_dec(&pd->usecnt); |
1a56ff6d | 1027 | if (srq_type == IB_SRQT_XRC) |
418d5130 | 1028 | atomic_dec(&xrcd->usecnt); |
1a56ff6d | 1029 | if (ib_srq_has_cq(srq_type)) |
418d5130 | 1030 | atomic_dec(&cq->usecnt); |
418d5130 | 1031 | } |
d41fcc67 RD |
1032 | |
1033 | return ret; | |
1034 | } | |
1035 | EXPORT_SYMBOL(ib_destroy_srq); | |
1036 | ||
1da177e4 LT |
1037 | /* Queue pairs */ |
1038 | ||
0e0ec7e0 SH |
1039 | static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) |
1040 | { | |
1041 | struct ib_qp *qp = context; | |
73c40c61 | 1042 | unsigned long flags; |
0e0ec7e0 | 1043 | |
73c40c61 | 1044 | spin_lock_irqsave(&qp->device->event_handler_lock, flags); |
0e0ec7e0 | 1045 | list_for_each_entry(event->element.qp, &qp->open_list, open_list) |
eec9e29f SP |
1046 | if (event->element.qp->event_handler) |
1047 | event->element.qp->event_handler(event, event->element.qp->qp_context); | |
73c40c61 | 1048 | spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); |
0e0ec7e0 SH |
1049 | } |
1050 | ||
d3d72d90 SH |
1051 | static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) |
1052 | { | |
1053 | mutex_lock(&xrcd->tgt_qp_mutex); | |
1054 | list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); | |
1055 | mutex_unlock(&xrcd->tgt_qp_mutex); | |
1056 | } | |
1057 | ||
0e0ec7e0 SH |
1058 | static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, |
1059 | void (*event_handler)(struct ib_event *, void *), | |
1060 | void *qp_context) | |
d3d72d90 | 1061 | { |
0e0ec7e0 SH |
1062 | struct ib_qp *qp; |
1063 | unsigned long flags; | |
d291f1a6 | 1064 | int err; |
0e0ec7e0 SH |
1065 | |
1066 | qp = kzalloc(sizeof *qp, GFP_KERNEL); | |
1067 | if (!qp) | |
1068 | return ERR_PTR(-ENOMEM); | |
1069 | ||
d291f1a6 DJ |
1070 | qp->real_qp = real_qp; |
1071 | err = ib_open_shared_qp_security(qp, real_qp->device); | |
1072 | if (err) { | |
1073 | kfree(qp); | |
1074 | return ERR_PTR(err); | |
1075 | } | |
1076 | ||
0e0ec7e0 SH |
1077 | qp->real_qp = real_qp; |
1078 | atomic_inc(&real_qp->usecnt); | |
1079 | qp->device = real_qp->device; | |
1080 | qp->event_handler = event_handler; | |
1081 | qp->qp_context = qp_context; | |
1082 | qp->qp_num = real_qp->qp_num; | |
1083 | qp->qp_type = real_qp->qp_type; | |
1084 | ||
1085 | spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); | |
1086 | list_add(&qp->open_list, &real_qp->open_list); | |
1087 | spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); | |
1088 | ||
1089 | return qp; | |
1090 | } | |
1091 | ||
1092 | struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, | |
1093 | struct ib_qp_open_attr *qp_open_attr) | |
1094 | { | |
1095 | struct ib_qp *qp, *real_qp; | |
1096 | ||
1097 | if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) | |
1098 | return ERR_PTR(-EINVAL); | |
1099 | ||
1100 | qp = ERR_PTR(-EINVAL); | |
d3d72d90 | 1101 | mutex_lock(&xrcd->tgt_qp_mutex); |
0e0ec7e0 SH |
1102 | list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { |
1103 | if (real_qp->qp_num == qp_open_attr->qp_num) { | |
1104 | qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, | |
1105 | qp_open_attr->qp_context); | |
1106 | break; | |
1107 | } | |
1108 | } | |
d3d72d90 | 1109 | mutex_unlock(&xrcd->tgt_qp_mutex); |
0e0ec7e0 | 1110 | return qp; |
d3d72d90 | 1111 | } |
0e0ec7e0 | 1112 | EXPORT_SYMBOL(ib_open_qp); |
d3d72d90 | 1113 | |
535005ca YA |
1114 | static struct ib_qp *create_xrc_qp(struct ib_qp *qp, |
1115 | struct ib_qp_init_attr *qp_init_attr) | |
04c41bf3 CH |
1116 | { |
1117 | struct ib_qp *real_qp = qp; | |
1118 | ||
1119 | qp->event_handler = __ib_shared_qp_event_handler; | |
1120 | qp->qp_context = qp; | |
1121 | qp->pd = NULL; | |
1122 | qp->send_cq = qp->recv_cq = NULL; | |
1123 | qp->srq = NULL; | |
1124 | qp->xrcd = qp_init_attr->xrcd; | |
1125 | atomic_inc(&qp_init_attr->xrcd->usecnt); | |
1126 | INIT_LIST_HEAD(&qp->open_list); | |
1127 | ||
1128 | qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, | |
1129 | qp_init_attr->qp_context); | |
535005ca YA |
1130 | if (IS_ERR(qp)) |
1131 | return qp; | |
1132 | ||
1133 | __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); | |
04c41bf3 CH |
1134 | return qp; |
1135 | } | |
1136 | ||
1da177e4 LT |
1137 | struct ib_qp *ib_create_qp(struct ib_pd *pd, |
1138 | struct ib_qp_init_attr *qp_init_attr) | |
1139 | { | |
04c41bf3 CH |
1140 | struct ib_device *device = pd ? pd->device : qp_init_attr->xrcd->device; |
1141 | struct ib_qp *qp; | |
a060b562 CH |
1142 | int ret; |
1143 | ||
a9017e23 YH |
1144 | if (qp_init_attr->rwq_ind_tbl && |
1145 | (qp_init_attr->recv_cq || | |
1146 | qp_init_attr->srq || qp_init_attr->cap.max_recv_wr || | |
1147 | qp_init_attr->cap.max_recv_sge)) | |
1148 | return ERR_PTR(-EINVAL); | |
1149 | ||
a060b562 CH |
1150 | /* |
1151 | * If the callers is using the RDMA API calculate the resources | |
1152 | * needed for the RDMA READ/WRITE operations. | |
1153 | * | |
1154 | * Note that these callers need to pass in a port number. | |
1155 | */ | |
1156 | if (qp_init_attr->cap.max_rdma_ctxs) | |
1157 | rdma_rw_init_qp(device, qp_init_attr); | |
1da177e4 | 1158 | |
2f08ee36 | 1159 | qp = _ib_create_qp(device, pd, qp_init_attr, NULL, NULL); |
04c41bf3 CH |
1160 | if (IS_ERR(qp)) |
1161 | return qp; | |
1162 | ||
d291f1a6 | 1163 | ret = ib_create_qp_security(qp, device); |
535005ca YA |
1164 | if (ret) |
1165 | goto err; | |
d291f1a6 | 1166 | |
04c41bf3 | 1167 | qp->real_qp = qp; |
04c41bf3 | 1168 | qp->qp_type = qp_init_attr->qp_type; |
a9017e23 | 1169 | qp->rwq_ind_tbl = qp_init_attr->rwq_ind_tbl; |
04c41bf3 CH |
1170 | |
1171 | atomic_set(&qp->usecnt, 0); | |
fffb0383 CH |
1172 | qp->mrs_used = 0; |
1173 | spin_lock_init(&qp->mr_lock); | |
a060b562 | 1174 | INIT_LIST_HEAD(&qp->rdma_mrs); |
0e353e34 | 1175 | INIT_LIST_HEAD(&qp->sig_mrs); |
498ca3c8 | 1176 | qp->port = 0; |
fffb0383 | 1177 | |
535005ca YA |
1178 | if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { |
1179 | struct ib_qp *xrc_qp = create_xrc_qp(qp, qp_init_attr); | |
1180 | ||
1181 | if (IS_ERR(xrc_qp)) { | |
1182 | ret = PTR_ERR(xrc_qp); | |
1183 | goto err; | |
1184 | } | |
1185 | return xrc_qp; | |
1186 | } | |
04c41bf3 CH |
1187 | |
1188 | qp->event_handler = qp_init_attr->event_handler; | |
1189 | qp->qp_context = qp_init_attr->qp_context; | |
1190 | if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { | |
1191 | qp->recv_cq = NULL; | |
1192 | qp->srq = NULL; | |
1193 | } else { | |
1194 | qp->recv_cq = qp_init_attr->recv_cq; | |
a9017e23 YH |
1195 | if (qp_init_attr->recv_cq) |
1196 | atomic_inc(&qp_init_attr->recv_cq->usecnt); | |
04c41bf3 CH |
1197 | qp->srq = qp_init_attr->srq; |
1198 | if (qp->srq) | |
1199 | atomic_inc(&qp_init_attr->srq->usecnt); | |
1da177e4 LT |
1200 | } |
1201 | ||
04c41bf3 CH |
1202 | qp->send_cq = qp_init_attr->send_cq; |
1203 | qp->xrcd = NULL; | |
1204 | ||
1205 | atomic_inc(&pd->usecnt); | |
a9017e23 YH |
1206 | if (qp_init_attr->send_cq) |
1207 | atomic_inc(&qp_init_attr->send_cq->usecnt); | |
1208 | if (qp_init_attr->rwq_ind_tbl) | |
1209 | atomic_inc(&qp->rwq_ind_tbl->usecnt); | |
a060b562 CH |
1210 | |
1211 | if (qp_init_attr->cap.max_rdma_ctxs) { | |
1212 | ret = rdma_rw_init_mrs(qp, qp_init_attr); | |
535005ca YA |
1213 | if (ret) |
1214 | goto err; | |
a060b562 CH |
1215 | } |
1216 | ||
632bc3f6 BVA |
1217 | /* |
1218 | * Note: all hw drivers guarantee that max_send_sge is lower than | |
1219 | * the device RDMA WRITE SGE limit but not all hw drivers ensure that | |
1220 | * max_send_sge <= max_sge_rd. | |
1221 | */ | |
1222 | qp->max_write_sge = qp_init_attr->cap.max_send_sge; | |
1223 | qp->max_read_sge = min_t(u32, qp_init_attr->cap.max_send_sge, | |
1224 | device->attrs.max_sge_rd); | |
1225 | ||
1da177e4 | 1226 | return qp; |
535005ca YA |
1227 | |
1228 | err: | |
1229 | ib_destroy_qp(qp); | |
1230 | return ERR_PTR(ret); | |
1231 | ||
1da177e4 LT |
1232 | } |
1233 | EXPORT_SYMBOL(ib_create_qp); | |
1234 | ||
8a51866f RD |
1235 | static const struct { |
1236 | int valid; | |
b42b63cf SH |
1237 | enum ib_qp_attr_mask req_param[IB_QPT_MAX]; |
1238 | enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; | |
8a51866f RD |
1239 | } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { |
1240 | [IB_QPS_RESET] = { | |
1241 | [IB_QPS_RESET] = { .valid = 1 }, | |
8a51866f RD |
1242 | [IB_QPS_INIT] = { |
1243 | .valid = 1, | |
1244 | .req_param = { | |
1245 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
1246 | IB_QP_PORT | | |
1247 | IB_QP_QKEY), | |
c938a616 | 1248 | [IB_QPT_RAW_PACKET] = IB_QP_PORT, |
8a51866f RD |
1249 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | |
1250 | IB_QP_PORT | | |
1251 | IB_QP_ACCESS_FLAGS), | |
1252 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
1253 | IB_QP_PORT | | |
1254 | IB_QP_ACCESS_FLAGS), | |
b42b63cf SH |
1255 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
1256 | IB_QP_PORT | | |
1257 | IB_QP_ACCESS_FLAGS), | |
1258 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | | |
1259 | IB_QP_PORT | | |
1260 | IB_QP_ACCESS_FLAGS), | |
8a51866f RD |
1261 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
1262 | IB_QP_QKEY), | |
1263 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
1264 | IB_QP_QKEY), | |
1265 | } | |
1266 | }, | |
1267 | }, | |
1268 | [IB_QPS_INIT] = { | |
1269 | [IB_QPS_RESET] = { .valid = 1 }, | |
1270 | [IB_QPS_ERR] = { .valid = 1 }, | |
1271 | [IB_QPS_INIT] = { | |
1272 | .valid = 1, | |
1273 | .opt_param = { | |
1274 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
1275 | IB_QP_PORT | | |
1276 | IB_QP_QKEY), | |
1277 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
1278 | IB_QP_PORT | | |
1279 | IB_QP_ACCESS_FLAGS), | |
1280 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
1281 | IB_QP_PORT | | |
1282 | IB_QP_ACCESS_FLAGS), | |
b42b63cf SH |
1283 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
1284 | IB_QP_PORT | | |
1285 | IB_QP_ACCESS_FLAGS), | |
1286 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | | |
1287 | IB_QP_PORT | | |
1288 | IB_QP_ACCESS_FLAGS), | |
8a51866f RD |
1289 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
1290 | IB_QP_QKEY), | |
1291 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
1292 | IB_QP_QKEY), | |
1293 | } | |
1294 | }, | |
1295 | [IB_QPS_RTR] = { | |
1296 | .valid = 1, | |
1297 | .req_param = { | |
1298 | [IB_QPT_UC] = (IB_QP_AV | | |
1299 | IB_QP_PATH_MTU | | |
1300 | IB_QP_DEST_QPN | | |
1301 | IB_QP_RQ_PSN), | |
1302 | [IB_QPT_RC] = (IB_QP_AV | | |
1303 | IB_QP_PATH_MTU | | |
1304 | IB_QP_DEST_QPN | | |
1305 | IB_QP_RQ_PSN | | |
1306 | IB_QP_MAX_DEST_RD_ATOMIC | | |
1307 | IB_QP_MIN_RNR_TIMER), | |
b42b63cf SH |
1308 | [IB_QPT_XRC_INI] = (IB_QP_AV | |
1309 | IB_QP_PATH_MTU | | |
1310 | IB_QP_DEST_QPN | | |
1311 | IB_QP_RQ_PSN), | |
1312 | [IB_QPT_XRC_TGT] = (IB_QP_AV | | |
1313 | IB_QP_PATH_MTU | | |
1314 | IB_QP_DEST_QPN | | |
1315 | IB_QP_RQ_PSN | | |
1316 | IB_QP_MAX_DEST_RD_ATOMIC | | |
1317 | IB_QP_MIN_RNR_TIMER), | |
8a51866f RD |
1318 | }, |
1319 | .opt_param = { | |
1320 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
1321 | IB_QP_QKEY), | |
1322 | [IB_QPT_UC] = (IB_QP_ALT_PATH | | |
1323 | IB_QP_ACCESS_FLAGS | | |
1324 | IB_QP_PKEY_INDEX), | |
1325 | [IB_QPT_RC] = (IB_QP_ALT_PATH | | |
1326 | IB_QP_ACCESS_FLAGS | | |
1327 | IB_QP_PKEY_INDEX), | |
b42b63cf SH |
1328 | [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | |
1329 | IB_QP_ACCESS_FLAGS | | |
1330 | IB_QP_PKEY_INDEX), | |
1331 | [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | | |
1332 | IB_QP_ACCESS_FLAGS | | |
1333 | IB_QP_PKEY_INDEX), | |
8a51866f RD |
1334 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
1335 | IB_QP_QKEY), | |
1336 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
1337 | IB_QP_QKEY), | |
dd5f03be | 1338 | }, |
dbf727de | 1339 | }, |
8a51866f RD |
1340 | }, |
1341 | [IB_QPS_RTR] = { | |
1342 | [IB_QPS_RESET] = { .valid = 1 }, | |
1343 | [IB_QPS_ERR] = { .valid = 1 }, | |
1344 | [IB_QPS_RTS] = { | |
1345 | .valid = 1, | |
1346 | .req_param = { | |
1347 | [IB_QPT_UD] = IB_QP_SQ_PSN, | |
1348 | [IB_QPT_UC] = IB_QP_SQ_PSN, | |
1349 | [IB_QPT_RC] = (IB_QP_TIMEOUT | | |
1350 | IB_QP_RETRY_CNT | | |
1351 | IB_QP_RNR_RETRY | | |
1352 | IB_QP_SQ_PSN | | |
1353 | IB_QP_MAX_QP_RD_ATOMIC), | |
b42b63cf SH |
1354 | [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | |
1355 | IB_QP_RETRY_CNT | | |
1356 | IB_QP_RNR_RETRY | | |
1357 | IB_QP_SQ_PSN | | |
1358 | IB_QP_MAX_QP_RD_ATOMIC), | |
1359 | [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | | |
1360 | IB_QP_SQ_PSN), | |
8a51866f RD |
1361 | [IB_QPT_SMI] = IB_QP_SQ_PSN, |
1362 | [IB_QPT_GSI] = IB_QP_SQ_PSN, | |
1363 | }, | |
1364 | .opt_param = { | |
1365 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
1366 | IB_QP_QKEY), | |
1367 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
1368 | IB_QP_ALT_PATH | | |
1369 | IB_QP_ACCESS_FLAGS | | |
1370 | IB_QP_PATH_MIG_STATE), | |
1371 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
1372 | IB_QP_ALT_PATH | | |
1373 | IB_QP_ACCESS_FLAGS | | |
1374 | IB_QP_MIN_RNR_TIMER | | |
1375 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
1376 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
1377 | IB_QP_ALT_PATH | | |
1378 | IB_QP_ACCESS_FLAGS | | |
1379 | IB_QP_PATH_MIG_STATE), | |
1380 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
1381 | IB_QP_ALT_PATH | | |
1382 | IB_QP_ACCESS_FLAGS | | |
1383 | IB_QP_MIN_RNR_TIMER | | |
1384 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
1385 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
1386 | IB_QP_QKEY), | |
1387 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
1388 | IB_QP_QKEY), | |
528e5a1b | 1389 | [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, |
8a51866f RD |
1390 | } |
1391 | } | |
1392 | }, | |
1393 | [IB_QPS_RTS] = { | |
1394 | [IB_QPS_RESET] = { .valid = 1 }, | |
1395 | [IB_QPS_ERR] = { .valid = 1 }, | |
1396 | [IB_QPS_RTS] = { | |
1397 | .valid = 1, | |
1398 | .opt_param = { | |
1399 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
1400 | IB_QP_QKEY), | |
4546d31d DB |
1401 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
1402 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
1403 | IB_QP_ALT_PATH | |
1404 | IB_QP_PATH_MIG_STATE), | |
4546d31d DB |
1405 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
1406 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
1407 | IB_QP_ALT_PATH | |
1408 | IB_QP_PATH_MIG_STATE | | |
1409 | IB_QP_MIN_RNR_TIMER), | |
b42b63cf SH |
1410 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
1411 | IB_QP_ACCESS_FLAGS | | |
1412 | IB_QP_ALT_PATH | | |
1413 | IB_QP_PATH_MIG_STATE), | |
1414 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
1415 | IB_QP_ACCESS_FLAGS | | |
1416 | IB_QP_ALT_PATH | | |
1417 | IB_QP_PATH_MIG_STATE | | |
1418 | IB_QP_MIN_RNR_TIMER), | |
8a51866f RD |
1419 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
1420 | IB_QP_QKEY), | |
1421 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
1422 | IB_QP_QKEY), | |
528e5a1b | 1423 | [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, |
8a51866f RD |
1424 | } |
1425 | }, | |
1426 | [IB_QPS_SQD] = { | |
1427 | .valid = 1, | |
1428 | .opt_param = { | |
1429 | [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
1430 | [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
1431 | [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
b42b63cf SH |
1432 | [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
1433 | [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ | |
8a51866f RD |
1434 | [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
1435 | [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY | |
1436 | } | |
1437 | }, | |
1438 | }, | |
1439 | [IB_QPS_SQD] = { | |
1440 | [IB_QPS_RESET] = { .valid = 1 }, | |
1441 | [IB_QPS_ERR] = { .valid = 1 }, | |
1442 | [IB_QPS_RTS] = { | |
1443 | .valid = 1, | |
1444 | .opt_param = { | |
1445 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
1446 | IB_QP_QKEY), | |
1447 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
1448 | IB_QP_ALT_PATH | | |
1449 | IB_QP_ACCESS_FLAGS | | |
1450 | IB_QP_PATH_MIG_STATE), | |
1451 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
1452 | IB_QP_ALT_PATH | | |
1453 | IB_QP_ACCESS_FLAGS | | |
1454 | IB_QP_MIN_RNR_TIMER | | |
1455 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
1456 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
1457 | IB_QP_ALT_PATH | | |
1458 | IB_QP_ACCESS_FLAGS | | |
1459 | IB_QP_PATH_MIG_STATE), | |
1460 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
1461 | IB_QP_ALT_PATH | | |
1462 | IB_QP_ACCESS_FLAGS | | |
1463 | IB_QP_MIN_RNR_TIMER | | |
1464 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
1465 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
1466 | IB_QP_QKEY), | |
1467 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
1468 | IB_QP_QKEY), | |
1469 | } | |
1470 | }, | |
1471 | [IB_QPS_SQD] = { | |
1472 | .valid = 1, | |
1473 | .opt_param = { | |
1474 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
1475 | IB_QP_QKEY), | |
1476 | [IB_QPT_UC] = (IB_QP_AV | | |
8a51866f RD |
1477 | IB_QP_ALT_PATH | |
1478 | IB_QP_ACCESS_FLAGS | | |
1479 | IB_QP_PKEY_INDEX | | |
1480 | IB_QP_PATH_MIG_STATE), | |
1481 | [IB_QPT_RC] = (IB_QP_PORT | | |
1482 | IB_QP_AV | | |
1483 | IB_QP_TIMEOUT | | |
1484 | IB_QP_RETRY_CNT | | |
1485 | IB_QP_RNR_RETRY | | |
1486 | IB_QP_MAX_QP_RD_ATOMIC | | |
1487 | IB_QP_MAX_DEST_RD_ATOMIC | | |
8a51866f RD |
1488 | IB_QP_ALT_PATH | |
1489 | IB_QP_ACCESS_FLAGS | | |
1490 | IB_QP_PKEY_INDEX | | |
1491 | IB_QP_MIN_RNR_TIMER | | |
1492 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
1493 | [IB_QPT_XRC_INI] = (IB_QP_PORT | |
1494 | IB_QP_AV | | |
1495 | IB_QP_TIMEOUT | | |
1496 | IB_QP_RETRY_CNT | | |
1497 | IB_QP_RNR_RETRY | | |
1498 | IB_QP_MAX_QP_RD_ATOMIC | | |
1499 | IB_QP_ALT_PATH | | |
1500 | IB_QP_ACCESS_FLAGS | | |
1501 | IB_QP_PKEY_INDEX | | |
1502 | IB_QP_PATH_MIG_STATE), | |
1503 | [IB_QPT_XRC_TGT] = (IB_QP_PORT | | |
1504 | IB_QP_AV | | |
1505 | IB_QP_TIMEOUT | | |
1506 | IB_QP_MAX_DEST_RD_ATOMIC | | |
1507 | IB_QP_ALT_PATH | | |
1508 | IB_QP_ACCESS_FLAGS | | |
1509 | IB_QP_PKEY_INDEX | | |
1510 | IB_QP_MIN_RNR_TIMER | | |
1511 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
1512 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
1513 | IB_QP_QKEY), | |
1514 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
1515 | IB_QP_QKEY), | |
1516 | } | |
1517 | } | |
1518 | }, | |
1519 | [IB_QPS_SQE] = { | |
1520 | [IB_QPS_RESET] = { .valid = 1 }, | |
1521 | [IB_QPS_ERR] = { .valid = 1 }, | |
1522 | [IB_QPS_RTS] = { | |
1523 | .valid = 1, | |
1524 | .opt_param = { | |
1525 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
1526 | IB_QP_QKEY), | |
1527 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
1528 | IB_QP_ACCESS_FLAGS), | |
1529 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
1530 | IB_QP_QKEY), | |
1531 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
1532 | IB_QP_QKEY), | |
1533 | } | |
1534 | } | |
1535 | }, | |
1536 | [IB_QPS_ERR] = { | |
1537 | [IB_QPS_RESET] = { .valid = 1 }, | |
1538 | [IB_QPS_ERR] = { .valid = 1 } | |
1539 | } | |
1540 | }; | |
1541 | ||
19b1f540 | 1542 | bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, |
d31131bb | 1543 | enum ib_qp_type type, enum ib_qp_attr_mask mask) |
8a51866f RD |
1544 | { |
1545 | enum ib_qp_attr_mask req_param, opt_param; | |
1546 | ||
8a51866f RD |
1547 | if (mask & IB_QP_CUR_STATE && |
1548 | cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && | |
1549 | cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) | |
19b1f540 | 1550 | return false; |
8a51866f RD |
1551 | |
1552 | if (!qp_state_table[cur_state][next_state].valid) | |
19b1f540 | 1553 | return false; |
8a51866f RD |
1554 | |
1555 | req_param = qp_state_table[cur_state][next_state].req_param[type]; | |
1556 | opt_param = qp_state_table[cur_state][next_state].opt_param[type]; | |
1557 | ||
1558 | if ((mask & req_param) != req_param) | |
19b1f540 | 1559 | return false; |
8a51866f RD |
1560 | |
1561 | if (mask & ~(req_param | opt_param | IB_QP_STATE)) | |
19b1f540 | 1562 | return false; |
8a51866f | 1563 | |
19b1f540 | 1564 | return true; |
8a51866f RD |
1565 | } |
1566 | EXPORT_SYMBOL(ib_modify_qp_is_ok); | |
1567 | ||
947c99ec PP |
1568 | /** |
1569 | * ib_resolve_eth_dmac - Resolve destination mac address | |
1570 | * @device: Device to consider | |
1571 | * @ah_attr: address handle attribute which describes the | |
1572 | * source and destination parameters | |
1573 | * ib_resolve_eth_dmac() resolves destination mac address and L3 hop limit It | |
1574 | * returns 0 on success or appropriate error code. It initializes the | |
1575 | * necessary ah_attr fields when call is successful. | |
1576 | */ | |
c0348eb0 PP |
1577 | static int ib_resolve_eth_dmac(struct ib_device *device, |
1578 | struct rdma_ah_attr *ah_attr) | |
ed4c54e5 | 1579 | { |
947c99ec | 1580 | int ret = 0; |
d8966fcd | 1581 | |
9636a56f NO |
1582 | if (rdma_is_multicast_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) { |
1583 | if (ipv6_addr_v4mapped((struct in6_addr *)ah_attr->grh.dgid.raw)) { | |
1584 | __be32 addr = 0; | |
1585 | ||
1586 | memcpy(&addr, ah_attr->grh.dgid.raw + 12, 4); | |
1587 | ip_eth_mc_map(addr, (char *)ah_attr->roce.dmac); | |
1588 | } else { | |
1589 | ipv6_eth_mc_map((struct in6_addr *)ah_attr->grh.dgid.raw, | |
1590 | (char *)ah_attr->roce.dmac); | |
1591 | } | |
c90ea9d8 | 1592 | } else { |
1060f865 | 1593 | ret = ib_resolve_unicast_gid_dmac(device, ah_attr); |
ed4c54e5 | 1594 | } |
ed4c54e5 OG |
1595 | return ret; |
1596 | } | |
ed4c54e5 | 1597 | |
8d9ec9ad JG |
1598 | static bool is_qp_type_connected(const struct ib_qp *qp) |
1599 | { | |
1600 | return (qp->qp_type == IB_QPT_UC || | |
1601 | qp->qp_type == IB_QPT_RC || | |
1602 | qp->qp_type == IB_QPT_XRC_INI || | |
1603 | qp->qp_type == IB_QPT_XRC_TGT); | |
1604 | } | |
1605 | ||
a512c2fb | 1606 | /** |
b96ac05a | 1607 | * IB core internal function to perform QP attributes modification. |
a512c2fb | 1608 | */ |
b96ac05a PP |
1609 | static int _ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr, |
1610 | int attr_mask, struct ib_udata *udata) | |
1da177e4 | 1611 | { |
727b7e9a | 1612 | u8 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; |
8d9ec9ad JG |
1613 | const struct ib_gid_attr *old_sgid_attr_av; |
1614 | const struct ib_gid_attr *old_sgid_attr_alt_av; | |
a512c2fb | 1615 | int ret; |
ed4c54e5 | 1616 | |
8d9ec9ad JG |
1617 | if (attr_mask & IB_QP_AV) { |
1618 | ret = rdma_fill_sgid_attr(qp->device, &attr->ah_attr, | |
1619 | &old_sgid_attr_av); | |
1620 | if (ret) | |
1621 | return ret; | |
1622 | } | |
1623 | if (attr_mask & IB_QP_ALT_PATH) { | |
1a1f460f JG |
1624 | /* |
1625 | * FIXME: This does not track the migration state, so if the | |
1626 | * user loads a new alternate path after the HW has migrated | |
1627 | * from primary->alternate we will keep the wrong | |
1628 | * references. This is OK for IB because the reference | |
1629 | * counting does not serve any functional purpose. | |
1630 | */ | |
8d9ec9ad JG |
1631 | ret = rdma_fill_sgid_attr(qp->device, &attr->alt_ah_attr, |
1632 | &old_sgid_attr_alt_av); | |
1633 | if (ret) | |
1634 | goto out_av; | |
7a5c938b JG |
1635 | |
1636 | /* | |
1637 | * Today the core code can only handle alternate paths and APM | |
1638 | * for IB. Ban them in roce mode. | |
1639 | */ | |
1640 | if (!(rdma_protocol_ib(qp->device, | |
1641 | attr->alt_ah_attr.port_num) && | |
1642 | rdma_protocol_ib(qp->device, port))) { | |
1643 | ret = EINVAL; | |
1644 | goto out; | |
1645 | } | |
8d9ec9ad JG |
1646 | } |
1647 | ||
1648 | /* | |
1649 | * If the user provided the qp_attr then we have to resolve it. Kernel | |
1650 | * users have to provide already resolved rdma_ah_attr's | |
1651 | */ | |
1652 | if (udata && (attr_mask & IB_QP_AV) && | |
1653 | attr->ah_attr.type == RDMA_AH_ATTR_TYPE_ROCE && | |
1654 | is_qp_type_connected(qp)) { | |
1655 | ret = ib_resolve_eth_dmac(qp->device, &attr->ah_attr); | |
1656 | if (ret) | |
1657 | goto out; | |
1658 | } | |
1659 | ||
727b7e9a MD |
1660 | if (rdma_ib_or_roce(qp->device, port)) { |
1661 | if (attr_mask & IB_QP_RQ_PSN && attr->rq_psn & ~0xffffff) { | |
43c7c851 JG |
1662 | dev_warn(&qp->device->dev, |
1663 | "%s rq_psn overflow, masking to 24 bits\n", | |
1664 | __func__); | |
727b7e9a MD |
1665 | attr->rq_psn &= 0xffffff; |
1666 | } | |
1667 | ||
1668 | if (attr_mask & IB_QP_SQ_PSN && attr->sq_psn & ~0xffffff) { | |
43c7c851 JG |
1669 | dev_warn(&qp->device->dev, |
1670 | " %s sq_psn overflow, masking to 24 bits\n", | |
1671 | __func__); | |
727b7e9a MD |
1672 | attr->sq_psn &= 0xffffff; |
1673 | } | |
1674 | } | |
1675 | ||
498ca3c8 | 1676 | ret = ib_security_modify_qp(qp, attr, attr_mask, udata); |
1a1f460f JG |
1677 | if (ret) |
1678 | goto out; | |
1679 | ||
1680 | if (attr_mask & IB_QP_PORT) | |
498ca3c8 | 1681 | qp->port = attr->port_num; |
1a1f460f JG |
1682 | if (attr_mask & IB_QP_AV) |
1683 | qp->av_sgid_attr = | |
1684 | rdma_update_sgid_attr(&attr->ah_attr, qp->av_sgid_attr); | |
1685 | if (attr_mask & IB_QP_ALT_PATH) | |
1686 | qp->alt_path_sgid_attr = rdma_update_sgid_attr( | |
1687 | &attr->alt_ah_attr, qp->alt_path_sgid_attr); | |
498ca3c8 | 1688 | |
8d9ec9ad JG |
1689 | out: |
1690 | if (attr_mask & IB_QP_ALT_PATH) | |
1691 | rdma_unfill_sgid_attr(&attr->alt_ah_attr, old_sgid_attr_alt_av); | |
1692 | out_av: | |
1693 | if (attr_mask & IB_QP_AV) | |
1694 | rdma_unfill_sgid_attr(&attr->ah_attr, old_sgid_attr_av); | |
498ca3c8 | 1695 | return ret; |
a512c2fb | 1696 | } |
b96ac05a PP |
1697 | |
1698 | /** | |
1699 | * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. | |
1700 | * @ib_qp: The QP to modify. | |
1701 | * @attr: On input, specifies the QP attributes to modify. On output, | |
1702 | * the current values of selected QP attributes are returned. | |
1703 | * @attr_mask: A bit-mask used to specify which attributes of the QP | |
1704 | * are being modified. | |
1705 | * @udata: pointer to user's input output buffer information | |
1706 | * are being modified. | |
1707 | * It returns 0 on success and returns appropriate error code on error. | |
1708 | */ | |
1709 | int ib_modify_qp_with_udata(struct ib_qp *ib_qp, struct ib_qp_attr *attr, | |
1710 | int attr_mask, struct ib_udata *udata) | |
1711 | { | |
8d9ec9ad | 1712 | return _ib_modify_qp(ib_qp->real_qp, attr, attr_mask, udata); |
b96ac05a | 1713 | } |
a512c2fb | 1714 | EXPORT_SYMBOL(ib_modify_qp_with_udata); |
ed4c54e5 | 1715 | |
d4186194 YS |
1716 | int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u8 *speed, u8 *width) |
1717 | { | |
1718 | int rc; | |
1719 | u32 netdev_speed; | |
1720 | struct net_device *netdev; | |
1721 | struct ethtool_link_ksettings lksettings; | |
1722 | ||
1723 | if (rdma_port_get_link_layer(dev, port_num) != IB_LINK_LAYER_ETHERNET) | |
1724 | return -EINVAL; | |
1725 | ||
c2261dd7 | 1726 | netdev = ib_device_get_netdev(dev, port_num); |
d4186194 YS |
1727 | if (!netdev) |
1728 | return -ENODEV; | |
1729 | ||
1730 | rtnl_lock(); | |
1731 | rc = __ethtool_get_link_ksettings(netdev, &lksettings); | |
1732 | rtnl_unlock(); | |
1733 | ||
1734 | dev_put(netdev); | |
1735 | ||
1736 | if (!rc) { | |
1737 | netdev_speed = lksettings.base.speed; | |
1738 | } else { | |
1739 | netdev_speed = SPEED_1000; | |
1740 | pr_warn("%s speed is unknown, defaulting to %d\n", netdev->name, | |
1741 | netdev_speed); | |
1742 | } | |
1743 | ||
1744 | if (netdev_speed <= SPEED_1000) { | |
1745 | *width = IB_WIDTH_1X; | |
1746 | *speed = IB_SPEED_SDR; | |
1747 | } else if (netdev_speed <= SPEED_10000) { | |
1748 | *width = IB_WIDTH_1X; | |
1749 | *speed = IB_SPEED_FDR10; | |
1750 | } else if (netdev_speed <= SPEED_20000) { | |
1751 | *width = IB_WIDTH_4X; | |
1752 | *speed = IB_SPEED_DDR; | |
1753 | } else if (netdev_speed <= SPEED_25000) { | |
1754 | *width = IB_WIDTH_1X; | |
1755 | *speed = IB_SPEED_EDR; | |
1756 | } else if (netdev_speed <= SPEED_40000) { | |
1757 | *width = IB_WIDTH_4X; | |
1758 | *speed = IB_SPEED_FDR10; | |
1759 | } else { | |
1760 | *width = IB_WIDTH_4X; | |
1761 | *speed = IB_SPEED_EDR; | |
1762 | } | |
1763 | ||
1764 | return 0; | |
1765 | } | |
1766 | EXPORT_SYMBOL(ib_get_eth_speed); | |
1767 | ||
a512c2fb PP |
1768 | int ib_modify_qp(struct ib_qp *qp, |
1769 | struct ib_qp_attr *qp_attr, | |
1770 | int qp_attr_mask) | |
1771 | { | |
b96ac05a | 1772 | return _ib_modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); |
1da177e4 LT |
1773 | } |
1774 | EXPORT_SYMBOL(ib_modify_qp); | |
1775 | ||
1776 | int ib_query_qp(struct ib_qp *qp, | |
1777 | struct ib_qp_attr *qp_attr, | |
1778 | int qp_attr_mask, | |
1779 | struct ib_qp_init_attr *qp_init_attr) | |
1780 | { | |
8d9ec9ad JG |
1781 | qp_attr->ah_attr.grh.sgid_attr = NULL; |
1782 | qp_attr->alt_ah_attr.grh.sgid_attr = NULL; | |
1783 | ||
3023a1e9 KH |
1784 | return qp->device->ops.query_qp ? |
1785 | qp->device->ops.query_qp(qp->real_qp, qp_attr, qp_attr_mask, | |
1786 | qp_init_attr) : -EOPNOTSUPP; | |
1da177e4 LT |
1787 | } |
1788 | EXPORT_SYMBOL(ib_query_qp); | |
1789 | ||
0e0ec7e0 SH |
1790 | int ib_close_qp(struct ib_qp *qp) |
1791 | { | |
1792 | struct ib_qp *real_qp; | |
1793 | unsigned long flags; | |
1794 | ||
1795 | real_qp = qp->real_qp; | |
1796 | if (real_qp == qp) | |
1797 | return -EINVAL; | |
1798 | ||
1799 | spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); | |
1800 | list_del(&qp->open_list); | |
1801 | spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); | |
1802 | ||
1803 | atomic_dec(&real_qp->usecnt); | |
4a50881b MS |
1804 | if (qp->qp_sec) |
1805 | ib_close_shared_qp_security(qp->qp_sec); | |
0e0ec7e0 SH |
1806 | kfree(qp); |
1807 | ||
1808 | return 0; | |
1809 | } | |
1810 | EXPORT_SYMBOL(ib_close_qp); | |
1811 | ||
1812 | static int __ib_destroy_shared_qp(struct ib_qp *qp) | |
1813 | { | |
1814 | struct ib_xrcd *xrcd; | |
1815 | struct ib_qp *real_qp; | |
1816 | int ret; | |
1817 | ||
1818 | real_qp = qp->real_qp; | |
1819 | xrcd = real_qp->xrcd; | |
1820 | ||
1821 | mutex_lock(&xrcd->tgt_qp_mutex); | |
1822 | ib_close_qp(qp); | |
1823 | if (atomic_read(&real_qp->usecnt) == 0) | |
1824 | list_del(&real_qp->xrcd_list); | |
1825 | else | |
1826 | real_qp = NULL; | |
1827 | mutex_unlock(&xrcd->tgt_qp_mutex); | |
1828 | ||
1829 | if (real_qp) { | |
1830 | ret = ib_destroy_qp(real_qp); | |
1831 | if (!ret) | |
1832 | atomic_dec(&xrcd->usecnt); | |
1833 | else | |
1834 | __ib_insert_xrcd_qp(xrcd, real_qp); | |
1835 | } | |
1836 | ||
1837 | return 0; | |
1838 | } | |
1839 | ||
1da177e4 LT |
1840 | int ib_destroy_qp(struct ib_qp *qp) |
1841 | { | |
1a1f460f JG |
1842 | const struct ib_gid_attr *alt_path_sgid_attr = qp->alt_path_sgid_attr; |
1843 | const struct ib_gid_attr *av_sgid_attr = qp->av_sgid_attr; | |
1da177e4 LT |
1844 | struct ib_pd *pd; |
1845 | struct ib_cq *scq, *rcq; | |
1846 | struct ib_srq *srq; | |
a9017e23 | 1847 | struct ib_rwq_ind_table *ind_tbl; |
d291f1a6 | 1848 | struct ib_qp_security *sec; |
1da177e4 LT |
1849 | int ret; |
1850 | ||
fffb0383 CH |
1851 | WARN_ON_ONCE(qp->mrs_used > 0); |
1852 | ||
0e0ec7e0 SH |
1853 | if (atomic_read(&qp->usecnt)) |
1854 | return -EBUSY; | |
1855 | ||
1856 | if (qp->real_qp != qp) | |
1857 | return __ib_destroy_shared_qp(qp); | |
1858 | ||
b42b63cf SH |
1859 | pd = qp->pd; |
1860 | scq = qp->send_cq; | |
1861 | rcq = qp->recv_cq; | |
1862 | srq = qp->srq; | |
a9017e23 | 1863 | ind_tbl = qp->rwq_ind_tbl; |
d291f1a6 DJ |
1864 | sec = qp->qp_sec; |
1865 | if (sec) | |
1866 | ib_destroy_qp_security_begin(sec); | |
1da177e4 | 1867 | |
a060b562 CH |
1868 | if (!qp->uobject) |
1869 | rdma_rw_cleanup_mrs(qp); | |
1870 | ||
78a0cd64 | 1871 | rdma_restrack_del(&qp->res); |
3023a1e9 | 1872 | ret = qp->device->ops.destroy_qp(qp); |
1da177e4 | 1873 | if (!ret) { |
1a1f460f JG |
1874 | if (alt_path_sgid_attr) |
1875 | rdma_put_gid_attr(alt_path_sgid_attr); | |
1876 | if (av_sgid_attr) | |
1877 | rdma_put_gid_attr(av_sgid_attr); | |
b42b63cf SH |
1878 | if (pd) |
1879 | atomic_dec(&pd->usecnt); | |
1880 | if (scq) | |
1881 | atomic_dec(&scq->usecnt); | |
1882 | if (rcq) | |
1883 | atomic_dec(&rcq->usecnt); | |
1da177e4 LT |
1884 | if (srq) |
1885 | atomic_dec(&srq->usecnt); | |
a9017e23 YH |
1886 | if (ind_tbl) |
1887 | atomic_dec(&ind_tbl->usecnt); | |
d291f1a6 DJ |
1888 | if (sec) |
1889 | ib_destroy_qp_security_end(sec); | |
1890 | } else { | |
1891 | if (sec) | |
1892 | ib_destroy_qp_security_abort(sec); | |
1da177e4 LT |
1893 | } |
1894 | ||
1895 | return ret; | |
1896 | } | |
1897 | EXPORT_SYMBOL(ib_destroy_qp); | |
1898 | ||
1899 | /* Completion queues */ | |
1900 | ||
7350cdd0 BP |
1901 | struct ib_cq *__ib_create_cq(struct ib_device *device, |
1902 | ib_comp_handler comp_handler, | |
1903 | void (*event_handler)(struct ib_event *, void *), | |
1904 | void *cq_context, | |
1905 | const struct ib_cq_init_attr *cq_attr, | |
1906 | const char *caller) | |
1da177e4 LT |
1907 | { |
1908 | struct ib_cq *cq; | |
1909 | ||
3023a1e9 | 1910 | cq = device->ops.create_cq(device, cq_attr, NULL, NULL); |
1da177e4 LT |
1911 | |
1912 | if (!IS_ERR(cq)) { | |
1913 | cq->device = device; | |
b5e81bf5 | 1914 | cq->uobject = NULL; |
1da177e4 LT |
1915 | cq->comp_handler = comp_handler; |
1916 | cq->event_handler = event_handler; | |
1917 | cq->cq_context = cq_context; | |
1918 | atomic_set(&cq->usecnt, 0); | |
08f294a1 | 1919 | cq->res.type = RDMA_RESTRACK_CQ; |
2165fc26 | 1920 | rdma_restrack_set_task(&cq->res, caller); |
af8d7037 | 1921 | rdma_restrack_kadd(&cq->res); |
1da177e4 LT |
1922 | } |
1923 | ||
1924 | return cq; | |
1925 | } | |
7350cdd0 | 1926 | EXPORT_SYMBOL(__ib_create_cq); |
1da177e4 | 1927 | |
4190b4e9 | 1928 | int rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period) |
2dd57162 | 1929 | { |
3023a1e9 KH |
1930 | return cq->device->ops.modify_cq ? |
1931 | cq->device->ops.modify_cq(cq, cq_count, | |
1932 | cq_period) : -EOPNOTSUPP; | |
2dd57162 | 1933 | } |
4190b4e9 | 1934 | EXPORT_SYMBOL(rdma_set_cq_moderation); |
2dd57162 | 1935 | |
1da177e4 LT |
1936 | int ib_destroy_cq(struct ib_cq *cq) |
1937 | { | |
1938 | if (atomic_read(&cq->usecnt)) | |
1939 | return -EBUSY; | |
1940 | ||
08f294a1 | 1941 | rdma_restrack_del(&cq->res); |
3023a1e9 | 1942 | return cq->device->ops.destroy_cq(cq); |
1da177e4 LT |
1943 | } |
1944 | EXPORT_SYMBOL(ib_destroy_cq); | |
1945 | ||
a74cd4af | 1946 | int ib_resize_cq(struct ib_cq *cq, int cqe) |
1da177e4 | 1947 | { |
3023a1e9 KH |
1948 | return cq->device->ops.resize_cq ? |
1949 | cq->device->ops.resize_cq(cq, cqe, NULL) : -EOPNOTSUPP; | |
1da177e4 LT |
1950 | } |
1951 | EXPORT_SYMBOL(ib_resize_cq); | |
1952 | ||
1953 | /* Memory regions */ | |
1954 | ||
1da177e4 LT |
1955 | int ib_dereg_mr(struct ib_mr *mr) |
1956 | { | |
ab67ed8d | 1957 | struct ib_pd *pd = mr->pd; |
be934cca | 1958 | struct ib_dm *dm = mr->dm; |
1da177e4 LT |
1959 | int ret; |
1960 | ||
fccec5b8 | 1961 | rdma_restrack_del(&mr->res); |
3023a1e9 | 1962 | ret = mr->device->ops.dereg_mr(mr); |
be934cca | 1963 | if (!ret) { |
1da177e4 | 1964 | atomic_dec(&pd->usecnt); |
be934cca AL |
1965 | if (dm) |
1966 | atomic_dec(&dm->usecnt); | |
1967 | } | |
1da177e4 LT |
1968 | |
1969 | return ret; | |
1970 | } | |
1971 | EXPORT_SYMBOL(ib_dereg_mr); | |
1972 | ||
9bee178b SG |
1973 | /** |
1974 | * ib_alloc_mr() - Allocates a memory region | |
1975 | * @pd: protection domain associated with the region | |
1976 | * @mr_type: memory region type | |
1977 | * @max_num_sg: maximum sg entries available for registration. | |
1978 | * | |
1979 | * Notes: | |
1980 | * Memory registeration page/sg lists must not exceed max_num_sg. | |
1981 | * For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed | |
1982 | * max_num_sg * used_page_size. | |
1983 | * | |
1984 | */ | |
1985 | struct ib_mr *ib_alloc_mr(struct ib_pd *pd, | |
1986 | enum ib_mr_type mr_type, | |
1987 | u32 max_num_sg) | |
00f7ec36 SW |
1988 | { |
1989 | struct ib_mr *mr; | |
1990 | ||
3023a1e9 | 1991 | if (!pd->device->ops.alloc_mr) |
87915bf8 | 1992 | return ERR_PTR(-EOPNOTSUPP); |
00f7ec36 | 1993 | |
3023a1e9 | 1994 | mr = pd->device->ops.alloc_mr(pd, mr_type, max_num_sg); |
00f7ec36 SW |
1995 | if (!IS_ERR(mr)) { |
1996 | mr->device = pd->device; | |
1997 | mr->pd = pd; | |
54e7e48b | 1998 | mr->dm = NULL; |
00f7ec36 SW |
1999 | mr->uobject = NULL; |
2000 | atomic_inc(&pd->usecnt); | |
d4a85c30 | 2001 | mr->need_inval = false; |
fccec5b8 | 2002 | mr->res.type = RDMA_RESTRACK_MR; |
af8d7037 | 2003 | rdma_restrack_kadd(&mr->res); |
00f7ec36 SW |
2004 | } |
2005 | ||
2006 | return mr; | |
2007 | } | |
d9f272c5 | 2008 | EXPORT_SYMBOL(ib_alloc_mr); |
00f7ec36 | 2009 | |
1da177e4 LT |
2010 | /* "Fast" memory regions */ |
2011 | ||
2012 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, | |
2013 | int mr_access_flags, | |
2014 | struct ib_fmr_attr *fmr_attr) | |
2015 | { | |
2016 | struct ib_fmr *fmr; | |
2017 | ||
3023a1e9 | 2018 | if (!pd->device->ops.alloc_fmr) |
87915bf8 | 2019 | return ERR_PTR(-EOPNOTSUPP); |
1da177e4 | 2020 | |
3023a1e9 | 2021 | fmr = pd->device->ops.alloc_fmr(pd, mr_access_flags, fmr_attr); |
1da177e4 LT |
2022 | if (!IS_ERR(fmr)) { |
2023 | fmr->device = pd->device; | |
2024 | fmr->pd = pd; | |
2025 | atomic_inc(&pd->usecnt); | |
2026 | } | |
2027 | ||
2028 | return fmr; | |
2029 | } | |
2030 | EXPORT_SYMBOL(ib_alloc_fmr); | |
2031 | ||
2032 | int ib_unmap_fmr(struct list_head *fmr_list) | |
2033 | { | |
2034 | struct ib_fmr *fmr; | |
2035 | ||
2036 | if (list_empty(fmr_list)) | |
2037 | return 0; | |
2038 | ||
2039 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); | |
3023a1e9 | 2040 | return fmr->device->ops.unmap_fmr(fmr_list); |
1da177e4 LT |
2041 | } |
2042 | EXPORT_SYMBOL(ib_unmap_fmr); | |
2043 | ||
2044 | int ib_dealloc_fmr(struct ib_fmr *fmr) | |
2045 | { | |
2046 | struct ib_pd *pd; | |
2047 | int ret; | |
2048 | ||
2049 | pd = fmr->pd; | |
3023a1e9 | 2050 | ret = fmr->device->ops.dealloc_fmr(fmr); |
1da177e4 LT |
2051 | if (!ret) |
2052 | atomic_dec(&pd->usecnt); | |
2053 | ||
2054 | return ret; | |
2055 | } | |
2056 | EXPORT_SYMBOL(ib_dealloc_fmr); | |
2057 | ||
2058 | /* Multicast groups */ | |
2059 | ||
52363335 NO |
2060 | static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid) |
2061 | { | |
2062 | struct ib_qp_init_attr init_attr = {}; | |
2063 | struct ib_qp_attr attr = {}; | |
2064 | int num_eth_ports = 0; | |
2065 | int port; | |
2066 | ||
2067 | /* If QP state >= init, it is assigned to a port and we can check this | |
2068 | * port only. | |
2069 | */ | |
2070 | if (!ib_query_qp(qp, &attr, IB_QP_STATE | IB_QP_PORT, &init_attr)) { | |
2071 | if (attr.qp_state >= IB_QPS_INIT) { | |
e6f9bc34 | 2072 | if (rdma_port_get_link_layer(qp->device, attr.port_num) != |
52363335 NO |
2073 | IB_LINK_LAYER_INFINIBAND) |
2074 | return true; | |
2075 | goto lid_check; | |
2076 | } | |
2077 | } | |
2078 | ||
2079 | /* Can't get a quick answer, iterate over all ports */ | |
2080 | for (port = 0; port < qp->device->phys_port_cnt; port++) | |
e6f9bc34 | 2081 | if (rdma_port_get_link_layer(qp->device, port) != |
52363335 NO |
2082 | IB_LINK_LAYER_INFINIBAND) |
2083 | num_eth_ports++; | |
2084 | ||
2085 | /* If we have at lease one Ethernet port, RoCE annex declares that | |
2086 | * multicast LID should be ignored. We can't tell at this step if the | |
2087 | * QP belongs to an IB or Ethernet port. | |
2088 | */ | |
2089 | if (num_eth_ports) | |
2090 | return true; | |
2091 | ||
2092 | /* If all the ports are IB, we can check according to IB spec. */ | |
2093 | lid_check: | |
2094 | return !(lid < be16_to_cpu(IB_MULTICAST_LID_BASE) || | |
2095 | lid == be16_to_cpu(IB_LID_PERMISSIVE)); | |
2096 | } | |
2097 | ||
1da177e4 LT |
2098 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) |
2099 | { | |
c3bccbfb OG |
2100 | int ret; |
2101 | ||
3023a1e9 | 2102 | if (!qp->device->ops.attach_mcast) |
87915bf8 | 2103 | return -EOPNOTSUPP; |
be1d325a NO |
2104 | |
2105 | if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || | |
2106 | qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) | |
0c33aeed JM |
2107 | return -EINVAL; |
2108 | ||
3023a1e9 | 2109 | ret = qp->device->ops.attach_mcast(qp, gid, lid); |
c3bccbfb OG |
2110 | if (!ret) |
2111 | atomic_inc(&qp->usecnt); | |
2112 | return ret; | |
1da177e4 LT |
2113 | } |
2114 | EXPORT_SYMBOL(ib_attach_mcast); | |
2115 | ||
2116 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
2117 | { | |
c3bccbfb OG |
2118 | int ret; |
2119 | ||
3023a1e9 | 2120 | if (!qp->device->ops.detach_mcast) |
87915bf8 | 2121 | return -EOPNOTSUPP; |
be1d325a NO |
2122 | |
2123 | if (!rdma_is_multicast_addr((struct in6_addr *)gid->raw) || | |
2124 | qp->qp_type != IB_QPT_UD || !is_valid_mcast_lid(qp, lid)) | |
0c33aeed JM |
2125 | return -EINVAL; |
2126 | ||
3023a1e9 | 2127 | ret = qp->device->ops.detach_mcast(qp, gid, lid); |
c3bccbfb OG |
2128 | if (!ret) |
2129 | atomic_dec(&qp->usecnt); | |
2130 | return ret; | |
1da177e4 LT |
2131 | } |
2132 | EXPORT_SYMBOL(ib_detach_mcast); | |
59991f94 | 2133 | |
f66c8ba4 | 2134 | struct ib_xrcd *__ib_alloc_xrcd(struct ib_device *device, const char *caller) |
59991f94 SH |
2135 | { |
2136 | struct ib_xrcd *xrcd; | |
2137 | ||
3023a1e9 | 2138 | if (!device->ops.alloc_xrcd) |
87915bf8 | 2139 | return ERR_PTR(-EOPNOTSUPP); |
59991f94 | 2140 | |
3023a1e9 | 2141 | xrcd = device->ops.alloc_xrcd(device, NULL, NULL); |
59991f94 SH |
2142 | if (!IS_ERR(xrcd)) { |
2143 | xrcd->device = device; | |
53d0bd1e | 2144 | xrcd->inode = NULL; |
59991f94 | 2145 | atomic_set(&xrcd->usecnt, 0); |
d3d72d90 SH |
2146 | mutex_init(&xrcd->tgt_qp_mutex); |
2147 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); | |
59991f94 SH |
2148 | } |
2149 | ||
2150 | return xrcd; | |
2151 | } | |
f66c8ba4 | 2152 | EXPORT_SYMBOL(__ib_alloc_xrcd); |
59991f94 SH |
2153 | |
2154 | int ib_dealloc_xrcd(struct ib_xrcd *xrcd) | |
2155 | { | |
d3d72d90 SH |
2156 | struct ib_qp *qp; |
2157 | int ret; | |
2158 | ||
59991f94 SH |
2159 | if (atomic_read(&xrcd->usecnt)) |
2160 | return -EBUSY; | |
2161 | ||
d3d72d90 SH |
2162 | while (!list_empty(&xrcd->tgt_qp_list)) { |
2163 | qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); | |
2164 | ret = ib_destroy_qp(qp); | |
2165 | if (ret) | |
2166 | return ret; | |
2167 | } | |
2168 | ||
3023a1e9 | 2169 | return xrcd->device->ops.dealloc_xrcd(xrcd); |
59991f94 SH |
2170 | } |
2171 | EXPORT_SYMBOL(ib_dealloc_xrcd); | |
319a441d | 2172 | |
5fd251c8 YH |
2173 | /** |
2174 | * ib_create_wq - Creates a WQ associated with the specified protection | |
2175 | * domain. | |
2176 | * @pd: The protection domain associated with the WQ. | |
1f58621e | 2177 | * @wq_attr: A list of initial attributes required to create the |
5fd251c8 YH |
2178 | * WQ. If WQ creation succeeds, then the attributes are updated to |
2179 | * the actual capabilities of the created WQ. | |
2180 | * | |
1f58621e | 2181 | * wq_attr->max_wr and wq_attr->max_sge determine |
5fd251c8 YH |
2182 | * the requested size of the WQ, and set to the actual values allocated |
2183 | * on return. | |
2184 | * If ib_create_wq() succeeds, then max_wr and max_sge will always be | |
2185 | * at least as large as the requested values. | |
2186 | */ | |
2187 | struct ib_wq *ib_create_wq(struct ib_pd *pd, | |
2188 | struct ib_wq_init_attr *wq_attr) | |
2189 | { | |
2190 | struct ib_wq *wq; | |
2191 | ||
3023a1e9 | 2192 | if (!pd->device->ops.create_wq) |
87915bf8 | 2193 | return ERR_PTR(-EOPNOTSUPP); |
5fd251c8 | 2194 | |
3023a1e9 | 2195 | wq = pd->device->ops.create_wq(pd, wq_attr, NULL); |
5fd251c8 YH |
2196 | if (!IS_ERR(wq)) { |
2197 | wq->event_handler = wq_attr->event_handler; | |
2198 | wq->wq_context = wq_attr->wq_context; | |
2199 | wq->wq_type = wq_attr->wq_type; | |
2200 | wq->cq = wq_attr->cq; | |
2201 | wq->device = pd->device; | |
2202 | wq->pd = pd; | |
2203 | wq->uobject = NULL; | |
2204 | atomic_inc(&pd->usecnt); | |
2205 | atomic_inc(&wq_attr->cq->usecnt); | |
2206 | atomic_set(&wq->usecnt, 0); | |
2207 | } | |
2208 | return wq; | |
2209 | } | |
2210 | EXPORT_SYMBOL(ib_create_wq); | |
2211 | ||
2212 | /** | |
2213 | * ib_destroy_wq - Destroys the specified WQ. | |
2214 | * @wq: The WQ to destroy. | |
2215 | */ | |
2216 | int ib_destroy_wq(struct ib_wq *wq) | |
2217 | { | |
2218 | int err; | |
2219 | struct ib_cq *cq = wq->cq; | |
2220 | struct ib_pd *pd = wq->pd; | |
2221 | ||
2222 | if (atomic_read(&wq->usecnt)) | |
2223 | return -EBUSY; | |
2224 | ||
3023a1e9 | 2225 | err = wq->device->ops.destroy_wq(wq); |
5fd251c8 YH |
2226 | if (!err) { |
2227 | atomic_dec(&pd->usecnt); | |
2228 | atomic_dec(&cq->usecnt); | |
2229 | } | |
2230 | return err; | |
2231 | } | |
2232 | EXPORT_SYMBOL(ib_destroy_wq); | |
2233 | ||
2234 | /** | |
2235 | * ib_modify_wq - Modifies the specified WQ. | |
2236 | * @wq: The WQ to modify. | |
2237 | * @wq_attr: On input, specifies the WQ attributes to modify. | |
2238 | * @wq_attr_mask: A bit-mask used to specify which attributes of the WQ | |
2239 | * are being modified. | |
2240 | * On output, the current values of selected WQ attributes are returned. | |
2241 | */ | |
2242 | int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr, | |
2243 | u32 wq_attr_mask) | |
2244 | { | |
2245 | int err; | |
2246 | ||
3023a1e9 | 2247 | if (!wq->device->ops.modify_wq) |
87915bf8 | 2248 | return -EOPNOTSUPP; |
5fd251c8 | 2249 | |
3023a1e9 | 2250 | err = wq->device->ops.modify_wq(wq, wq_attr, wq_attr_mask, NULL); |
5fd251c8 YH |
2251 | return err; |
2252 | } | |
2253 | EXPORT_SYMBOL(ib_modify_wq); | |
2254 | ||
6d39786b YH |
2255 | /* |
2256 | * ib_create_rwq_ind_table - Creates a RQ Indirection Table. | |
2257 | * @device: The device on which to create the rwq indirection table. | |
2258 | * @ib_rwq_ind_table_init_attr: A list of initial attributes required to | |
2259 | * create the Indirection Table. | |
2260 | * | |
2261 | * Note: The life time of ib_rwq_ind_table_init_attr->ind_tbl is not less | |
2262 | * than the created ib_rwq_ind_table object and the caller is responsible | |
2263 | * for its memory allocation/free. | |
2264 | */ | |
2265 | struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device, | |
2266 | struct ib_rwq_ind_table_init_attr *init_attr) | |
2267 | { | |
2268 | struct ib_rwq_ind_table *rwq_ind_table; | |
2269 | int i; | |
2270 | u32 table_size; | |
2271 | ||
3023a1e9 | 2272 | if (!device->ops.create_rwq_ind_table) |
87915bf8 | 2273 | return ERR_PTR(-EOPNOTSUPP); |
6d39786b YH |
2274 | |
2275 | table_size = (1 << init_attr->log_ind_tbl_size); | |
3023a1e9 KH |
2276 | rwq_ind_table = device->ops.create_rwq_ind_table(device, |
2277 | init_attr, NULL); | |
6d39786b YH |
2278 | if (IS_ERR(rwq_ind_table)) |
2279 | return rwq_ind_table; | |
2280 | ||
2281 | rwq_ind_table->ind_tbl = init_attr->ind_tbl; | |
2282 | rwq_ind_table->log_ind_tbl_size = init_attr->log_ind_tbl_size; | |
2283 | rwq_ind_table->device = device; | |
2284 | rwq_ind_table->uobject = NULL; | |
2285 | atomic_set(&rwq_ind_table->usecnt, 0); | |
2286 | ||
2287 | for (i = 0; i < table_size; i++) | |
2288 | atomic_inc(&rwq_ind_table->ind_tbl[i]->usecnt); | |
2289 | ||
2290 | return rwq_ind_table; | |
2291 | } | |
2292 | EXPORT_SYMBOL(ib_create_rwq_ind_table); | |
2293 | ||
2294 | /* | |
2295 | * ib_destroy_rwq_ind_table - Destroys the specified Indirection Table. | |
2296 | * @wq_ind_table: The Indirection Table to destroy. | |
2297 | */ | |
2298 | int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *rwq_ind_table) | |
2299 | { | |
2300 | int err, i; | |
2301 | u32 table_size = (1 << rwq_ind_table->log_ind_tbl_size); | |
2302 | struct ib_wq **ind_tbl = rwq_ind_table->ind_tbl; | |
2303 | ||
2304 | if (atomic_read(&rwq_ind_table->usecnt)) | |
2305 | return -EBUSY; | |
2306 | ||
3023a1e9 | 2307 | err = rwq_ind_table->device->ops.destroy_rwq_ind_table(rwq_ind_table); |
6d39786b YH |
2308 | if (!err) { |
2309 | for (i = 0; i < table_size; i++) | |
2310 | atomic_dec(&ind_tbl[i]->usecnt); | |
2311 | } | |
2312 | ||
2313 | return err; | |
2314 | } | |
2315 | EXPORT_SYMBOL(ib_destroy_rwq_ind_table); | |
2316 | ||
1b01d335 SG |
2317 | int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, |
2318 | struct ib_mr_status *mr_status) | |
2319 | { | |
3023a1e9 KH |
2320 | if (!mr->device->ops.check_mr_status) |
2321 | return -EOPNOTSUPP; | |
2322 | ||
2323 | return mr->device->ops.check_mr_status(mr, check_mask, mr_status); | |
1b01d335 SG |
2324 | } |
2325 | EXPORT_SYMBOL(ib_check_mr_status); | |
4c67e2bf | 2326 | |
50174a7f EC |
2327 | int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, |
2328 | int state) | |
2329 | { | |
3023a1e9 | 2330 | if (!device->ops.set_vf_link_state) |
87915bf8 | 2331 | return -EOPNOTSUPP; |
50174a7f | 2332 | |
3023a1e9 | 2333 | return device->ops.set_vf_link_state(device, vf, port, state); |
50174a7f EC |
2334 | } |
2335 | EXPORT_SYMBOL(ib_set_vf_link_state); | |
2336 | ||
2337 | int ib_get_vf_config(struct ib_device *device, int vf, u8 port, | |
2338 | struct ifla_vf_info *info) | |
2339 | { | |
3023a1e9 | 2340 | if (!device->ops.get_vf_config) |
87915bf8 | 2341 | return -EOPNOTSUPP; |
50174a7f | 2342 | |
3023a1e9 | 2343 | return device->ops.get_vf_config(device, vf, port, info); |
50174a7f EC |
2344 | } |
2345 | EXPORT_SYMBOL(ib_get_vf_config); | |
2346 | ||
2347 | int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, | |
2348 | struct ifla_vf_stats *stats) | |
2349 | { | |
3023a1e9 | 2350 | if (!device->ops.get_vf_stats) |
87915bf8 | 2351 | return -EOPNOTSUPP; |
50174a7f | 2352 | |
3023a1e9 | 2353 | return device->ops.get_vf_stats(device, vf, port, stats); |
50174a7f EC |
2354 | } |
2355 | EXPORT_SYMBOL(ib_get_vf_stats); | |
2356 | ||
2357 | int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, | |
2358 | int type) | |
2359 | { | |
3023a1e9 | 2360 | if (!device->ops.set_vf_guid) |
87915bf8 | 2361 | return -EOPNOTSUPP; |
50174a7f | 2362 | |
3023a1e9 | 2363 | return device->ops.set_vf_guid(device, vf, port, guid, type); |
50174a7f EC |
2364 | } |
2365 | EXPORT_SYMBOL(ib_set_vf_guid); | |
2366 | ||
4c67e2bf SG |
2367 | /** |
2368 | * ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list | |
2369 | * and set it the memory region. | |
2370 | * @mr: memory region | |
2371 | * @sg: dma mapped scatterlist | |
2372 | * @sg_nents: number of entries in sg | |
ff2ba993 | 2373 | * @sg_offset: offset in bytes into sg |
4c67e2bf SG |
2374 | * @page_size: page vector desired page size |
2375 | * | |
2376 | * Constraints: | |
2377 | * - The first sg element is allowed to have an offset. | |
52746129 BVA |
2378 | * - Each sg element must either be aligned to page_size or virtually |
2379 | * contiguous to the previous element. In case an sg element has a | |
2380 | * non-contiguous offset, the mapping prefix will not include it. | |
4c67e2bf SG |
2381 | * - The last sg element is allowed to have length less than page_size. |
2382 | * - If sg_nents total byte length exceeds the mr max_num_sge * page_size | |
2383 | * then only max_num_sg entries will be mapped. | |
52746129 | 2384 | * - If the MR was allocated with type IB_MR_TYPE_SG_GAPS, none of these |
f5aa9159 | 2385 | * constraints holds and the page_size argument is ignored. |
4c67e2bf SG |
2386 | * |
2387 | * Returns the number of sg elements that were mapped to the memory region. | |
2388 | * | |
2389 | * After this completes successfully, the memory region | |
2390 | * is ready for registration. | |
2391 | */ | |
ff2ba993 | 2392 | int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, |
9aa8b321 | 2393 | unsigned int *sg_offset, unsigned int page_size) |
4c67e2bf | 2394 | { |
3023a1e9 | 2395 | if (unlikely(!mr->device->ops.map_mr_sg)) |
87915bf8 | 2396 | return -EOPNOTSUPP; |
4c67e2bf SG |
2397 | |
2398 | mr->page_size = page_size; | |
2399 | ||
3023a1e9 | 2400 | return mr->device->ops.map_mr_sg(mr, sg, sg_nents, sg_offset); |
4c67e2bf SG |
2401 | } |
2402 | EXPORT_SYMBOL(ib_map_mr_sg); | |
2403 | ||
2404 | /** | |
2405 | * ib_sg_to_pages() - Convert the largest prefix of a sg list | |
2406 | * to a page vector | |
2407 | * @mr: memory region | |
2408 | * @sgl: dma mapped scatterlist | |
2409 | * @sg_nents: number of entries in sg | |
9aa8b321 BVA |
2410 | * @sg_offset_p: IN: start offset in bytes into sg |
2411 | * OUT: offset in bytes for element n of the sg of the first | |
2412 | * byte that has not been processed where n is the return | |
2413 | * value of this function. | |
4c67e2bf SG |
2414 | * @set_page: driver page assignment function pointer |
2415 | * | |
8f5ba10e | 2416 | * Core service helper for drivers to convert the largest |
4c67e2bf SG |
2417 | * prefix of given sg list to a page vector. The sg list |
2418 | * prefix converted is the prefix that meet the requirements | |
2419 | * of ib_map_mr_sg. | |
2420 | * | |
2421 | * Returns the number of sg elements that were assigned to | |
2422 | * a page vector. | |
2423 | */ | |
ff2ba993 | 2424 | int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, |
9aa8b321 | 2425 | unsigned int *sg_offset_p, int (*set_page)(struct ib_mr *, u64)) |
4c67e2bf SG |
2426 | { |
2427 | struct scatterlist *sg; | |
b6aeb980 | 2428 | u64 last_end_dma_addr = 0; |
9aa8b321 | 2429 | unsigned int sg_offset = sg_offset_p ? *sg_offset_p : 0; |
4c67e2bf SG |
2430 | unsigned int last_page_off = 0; |
2431 | u64 page_mask = ~((u64)mr->page_size - 1); | |
8f5ba10e | 2432 | int i, ret; |
4c67e2bf | 2433 | |
9aa8b321 BVA |
2434 | if (unlikely(sg_nents <= 0 || sg_offset > sg_dma_len(&sgl[0]))) |
2435 | return -EINVAL; | |
2436 | ||
ff2ba993 | 2437 | mr->iova = sg_dma_address(&sgl[0]) + sg_offset; |
4c67e2bf SG |
2438 | mr->length = 0; |
2439 | ||
2440 | for_each_sg(sgl, sg, sg_nents, i) { | |
ff2ba993 | 2441 | u64 dma_addr = sg_dma_address(sg) + sg_offset; |
9aa8b321 | 2442 | u64 prev_addr = dma_addr; |
ff2ba993 | 2443 | unsigned int dma_len = sg_dma_len(sg) - sg_offset; |
4c67e2bf SG |
2444 | u64 end_dma_addr = dma_addr + dma_len; |
2445 | u64 page_addr = dma_addr & page_mask; | |
2446 | ||
8f5ba10e BVA |
2447 | /* |
2448 | * For the second and later elements, check whether either the | |
2449 | * end of element i-1 or the start of element i is not aligned | |
2450 | * on a page boundary. | |
2451 | */ | |
2452 | if (i && (last_page_off != 0 || page_addr != dma_addr)) { | |
2453 | /* Stop mapping if there is a gap. */ | |
2454 | if (last_end_dma_addr != dma_addr) | |
2455 | break; | |
2456 | ||
2457 | /* | |
2458 | * Coalesce this element with the last. If it is small | |
2459 | * enough just update mr->length. Otherwise start | |
2460 | * mapping from the next page. | |
2461 | */ | |
2462 | goto next_page; | |
4c67e2bf SG |
2463 | } |
2464 | ||
2465 | do { | |
8f5ba10e | 2466 | ret = set_page(mr, page_addr); |
9aa8b321 BVA |
2467 | if (unlikely(ret < 0)) { |
2468 | sg_offset = prev_addr - sg_dma_address(sg); | |
2469 | mr->length += prev_addr - dma_addr; | |
2470 | if (sg_offset_p) | |
2471 | *sg_offset_p = sg_offset; | |
2472 | return i || sg_offset ? i : ret; | |
2473 | } | |
2474 | prev_addr = page_addr; | |
8f5ba10e | 2475 | next_page: |
4c67e2bf SG |
2476 | page_addr += mr->page_size; |
2477 | } while (page_addr < end_dma_addr); | |
2478 | ||
2479 | mr->length += dma_len; | |
2480 | last_end_dma_addr = end_dma_addr; | |
4c67e2bf | 2481 | last_page_off = end_dma_addr & ~page_mask; |
ff2ba993 CH |
2482 | |
2483 | sg_offset = 0; | |
4c67e2bf SG |
2484 | } |
2485 | ||
9aa8b321 BVA |
2486 | if (sg_offset_p) |
2487 | *sg_offset_p = 0; | |
4c67e2bf SG |
2488 | return i; |
2489 | } | |
2490 | EXPORT_SYMBOL(ib_sg_to_pages); | |
765d6774 SW |
2491 | |
2492 | struct ib_drain_cqe { | |
2493 | struct ib_cqe cqe; | |
2494 | struct completion done; | |
2495 | }; | |
2496 | ||
2497 | static void ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc) | |
2498 | { | |
2499 | struct ib_drain_cqe *cqe = container_of(wc->wr_cqe, struct ib_drain_cqe, | |
2500 | cqe); | |
2501 | ||
2502 | complete(&cqe->done); | |
2503 | } | |
2504 | ||
2505 | /* | |
2506 | * Post a WR and block until its completion is reaped for the SQ. | |
2507 | */ | |
2508 | static void __ib_drain_sq(struct ib_qp *qp) | |
2509 | { | |
f039f44f | 2510 | struct ib_cq *cq = qp->send_cq; |
765d6774 SW |
2511 | struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; |
2512 | struct ib_drain_cqe sdrain; | |
a1ae7d03 BVA |
2513 | struct ib_rdma_wr swr = { |
2514 | .wr = { | |
6ee68773 AM |
2515 | .next = NULL, |
2516 | { .wr_cqe = &sdrain.cqe, }, | |
a1ae7d03 | 2517 | .opcode = IB_WR_RDMA_WRITE, |
a1ae7d03 BVA |
2518 | }, |
2519 | }; | |
765d6774 SW |
2520 | int ret; |
2521 | ||
765d6774 SW |
2522 | ret = ib_modify_qp(qp, &attr, IB_QP_STATE); |
2523 | if (ret) { | |
2524 | WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); | |
2525 | return; | |
2526 | } | |
2527 | ||
aaebd377 MG |
2528 | sdrain.cqe.done = ib_drain_qp_done; |
2529 | init_completion(&sdrain.done); | |
2530 | ||
1fec77bf | 2531 | ret = ib_post_send(qp, &swr.wr, NULL); |
765d6774 SW |
2532 | if (ret) { |
2533 | WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); | |
2534 | return; | |
2535 | } | |
2536 | ||
f039f44f BVA |
2537 | if (cq->poll_ctx == IB_POLL_DIRECT) |
2538 | while (wait_for_completion_timeout(&sdrain.done, HZ / 10) <= 0) | |
2539 | ib_process_cq_direct(cq, -1); | |
2540 | else | |
2541 | wait_for_completion(&sdrain.done); | |
765d6774 SW |
2542 | } |
2543 | ||
2544 | /* | |
2545 | * Post a WR and block until its completion is reaped for the RQ. | |
2546 | */ | |
2547 | static void __ib_drain_rq(struct ib_qp *qp) | |
2548 | { | |
f039f44f | 2549 | struct ib_cq *cq = qp->recv_cq; |
765d6774 SW |
2550 | struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; |
2551 | struct ib_drain_cqe rdrain; | |
1fec77bf | 2552 | struct ib_recv_wr rwr = {}; |
765d6774 SW |
2553 | int ret; |
2554 | ||
765d6774 SW |
2555 | ret = ib_modify_qp(qp, &attr, IB_QP_STATE); |
2556 | if (ret) { | |
2557 | WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); | |
2558 | return; | |
2559 | } | |
2560 | ||
aaebd377 MG |
2561 | rwr.wr_cqe = &rdrain.cqe; |
2562 | rdrain.cqe.done = ib_drain_qp_done; | |
2563 | init_completion(&rdrain.done); | |
2564 | ||
1fec77bf | 2565 | ret = ib_post_recv(qp, &rwr, NULL); |
765d6774 SW |
2566 | if (ret) { |
2567 | WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); | |
2568 | return; | |
2569 | } | |
2570 | ||
f039f44f BVA |
2571 | if (cq->poll_ctx == IB_POLL_DIRECT) |
2572 | while (wait_for_completion_timeout(&rdrain.done, HZ / 10) <= 0) | |
2573 | ib_process_cq_direct(cq, -1); | |
2574 | else | |
2575 | wait_for_completion(&rdrain.done); | |
765d6774 SW |
2576 | } |
2577 | ||
2578 | /** | |
2579 | * ib_drain_sq() - Block until all SQ CQEs have been consumed by the | |
2580 | * application. | |
2581 | * @qp: queue pair to drain | |
2582 | * | |
2583 | * If the device has a provider-specific drain function, then | |
2584 | * call that. Otherwise call the generic drain function | |
2585 | * __ib_drain_sq(). | |
2586 | * | |
2587 | * The caller must: | |
2588 | * | |
2589 | * ensure there is room in the CQ and SQ for the drain work request and | |
2590 | * completion. | |
2591 | * | |
f039f44f | 2592 | * allocate the CQ using ib_alloc_cq(). |
765d6774 SW |
2593 | * |
2594 | * ensure that there are no other contexts that are posting WRs concurrently. | |
2595 | * Otherwise the drain is not guaranteed. | |
2596 | */ | |
2597 | void ib_drain_sq(struct ib_qp *qp) | |
2598 | { | |
3023a1e9 KH |
2599 | if (qp->device->ops.drain_sq) |
2600 | qp->device->ops.drain_sq(qp); | |
765d6774 SW |
2601 | else |
2602 | __ib_drain_sq(qp); | |
2603 | } | |
2604 | EXPORT_SYMBOL(ib_drain_sq); | |
2605 | ||
2606 | /** | |
2607 | * ib_drain_rq() - Block until all RQ CQEs have been consumed by the | |
2608 | * application. | |
2609 | * @qp: queue pair to drain | |
2610 | * | |
2611 | * If the device has a provider-specific drain function, then | |
2612 | * call that. Otherwise call the generic drain function | |
2613 | * __ib_drain_rq(). | |
2614 | * | |
2615 | * The caller must: | |
2616 | * | |
2617 | * ensure there is room in the CQ and RQ for the drain work request and | |
2618 | * completion. | |
2619 | * | |
f039f44f | 2620 | * allocate the CQ using ib_alloc_cq(). |
765d6774 SW |
2621 | * |
2622 | * ensure that there are no other contexts that are posting WRs concurrently. | |
2623 | * Otherwise the drain is not guaranteed. | |
2624 | */ | |
2625 | void ib_drain_rq(struct ib_qp *qp) | |
2626 | { | |
3023a1e9 KH |
2627 | if (qp->device->ops.drain_rq) |
2628 | qp->device->ops.drain_rq(qp); | |
765d6774 SW |
2629 | else |
2630 | __ib_drain_rq(qp); | |
2631 | } | |
2632 | EXPORT_SYMBOL(ib_drain_rq); | |
2633 | ||
2634 | /** | |
2635 | * ib_drain_qp() - Block until all CQEs have been consumed by the | |
2636 | * application on both the RQ and SQ. | |
2637 | * @qp: queue pair to drain | |
2638 | * | |
2639 | * The caller must: | |
2640 | * | |
2641 | * ensure there is room in the CQ(s), SQ, and RQ for drain work requests | |
2642 | * and completions. | |
2643 | * | |
f039f44f | 2644 | * allocate the CQs using ib_alloc_cq(). |
765d6774 SW |
2645 | * |
2646 | * ensure that there are no other contexts that are posting WRs concurrently. | |
2647 | * Otherwise the drain is not guaranteed. | |
2648 | */ | |
2649 | void ib_drain_qp(struct ib_qp *qp) | |
2650 | { | |
2651 | ib_drain_sq(qp); | |
42235f80 SG |
2652 | if (!qp->srq) |
2653 | ib_drain_rq(qp); | |
765d6774 SW |
2654 | } |
2655 | EXPORT_SYMBOL(ib_drain_qp); | |
f6a8a19b DD |
2656 | |
2657 | struct net_device *rdma_alloc_netdev(struct ib_device *device, u8 port_num, | |
2658 | enum rdma_netdev_t type, const char *name, | |
2659 | unsigned char name_assign_type, | |
2660 | void (*setup)(struct net_device *)) | |
2661 | { | |
2662 | struct rdma_netdev_alloc_params params; | |
2663 | struct net_device *netdev; | |
2664 | int rc; | |
2665 | ||
3023a1e9 | 2666 | if (!device->ops.rdma_netdev_get_params) |
f6a8a19b DD |
2667 | return ERR_PTR(-EOPNOTSUPP); |
2668 | ||
3023a1e9 KH |
2669 | rc = device->ops.rdma_netdev_get_params(device, port_num, type, |
2670 | ¶ms); | |
f6a8a19b DD |
2671 | if (rc) |
2672 | return ERR_PTR(rc); | |
2673 | ||
2674 | netdev = alloc_netdev_mqs(params.sizeof_priv, name, name_assign_type, | |
2675 | setup, params.txqs, params.rxqs); | |
2676 | if (!netdev) | |
2677 | return ERR_PTR(-ENOMEM); | |
2678 | ||
f6a8a19b DD |
2679 | return netdev; |
2680 | } | |
2681 | EXPORT_SYMBOL(rdma_alloc_netdev); | |
5d6b0cb3 DD |
2682 | |
2683 | int rdma_init_netdev(struct ib_device *device, u8 port_num, | |
2684 | enum rdma_netdev_t type, const char *name, | |
2685 | unsigned char name_assign_type, | |
2686 | void (*setup)(struct net_device *), | |
2687 | struct net_device *netdev) | |
2688 | { | |
2689 | struct rdma_netdev_alloc_params params; | |
2690 | int rc; | |
2691 | ||
3023a1e9 | 2692 | if (!device->ops.rdma_netdev_get_params) |
5d6b0cb3 DD |
2693 | return -EOPNOTSUPP; |
2694 | ||
3023a1e9 KH |
2695 | rc = device->ops.rdma_netdev_get_params(device, port_num, type, |
2696 | ¶ms); | |
5d6b0cb3 DD |
2697 | if (rc) |
2698 | return rc; | |
2699 | ||
2700 | return params.initialize_rdma_netdev(device, port_num, | |
2701 | netdev, params.param); | |
2702 | } | |
2703 | EXPORT_SYMBOL(rdma_init_netdev); |