]>
Commit | Line | Data |
---|---|---|
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> |
1da177e4 | 44 | |
a4d61e84 RD |
45 | #include <rdma/ib_verbs.h> |
46 | #include <rdma/ib_cache.h> | |
dd5f03be | 47 | #include <rdma/ib_addr.h> |
1da177e4 | 48 | |
bf6a9e31 JM |
49 | int ib_rate_to_mult(enum ib_rate rate) |
50 | { | |
51 | switch (rate) { | |
52 | case IB_RATE_2_5_GBPS: return 1; | |
53 | case IB_RATE_5_GBPS: return 2; | |
54 | case IB_RATE_10_GBPS: return 4; | |
55 | case IB_RATE_20_GBPS: return 8; | |
56 | case IB_RATE_30_GBPS: return 12; | |
57 | case IB_RATE_40_GBPS: return 16; | |
58 | case IB_RATE_60_GBPS: return 24; | |
59 | case IB_RATE_80_GBPS: return 32; | |
60 | case IB_RATE_120_GBPS: return 48; | |
61 | default: return -1; | |
62 | } | |
63 | } | |
64 | EXPORT_SYMBOL(ib_rate_to_mult); | |
65 | ||
66 | enum ib_rate mult_to_ib_rate(int mult) | |
67 | { | |
68 | switch (mult) { | |
69 | case 1: return IB_RATE_2_5_GBPS; | |
70 | case 2: return IB_RATE_5_GBPS; | |
71 | case 4: return IB_RATE_10_GBPS; | |
72 | case 8: return IB_RATE_20_GBPS; | |
73 | case 12: return IB_RATE_30_GBPS; | |
74 | case 16: return IB_RATE_40_GBPS; | |
75 | case 24: return IB_RATE_60_GBPS; | |
76 | case 32: return IB_RATE_80_GBPS; | |
77 | case 48: return IB_RATE_120_GBPS; | |
78 | default: return IB_RATE_PORT_CURRENT; | |
79 | } | |
80 | } | |
81 | EXPORT_SYMBOL(mult_to_ib_rate); | |
82 | ||
71eeba16 MA |
83 | int ib_rate_to_mbps(enum ib_rate rate) |
84 | { | |
85 | switch (rate) { | |
86 | case IB_RATE_2_5_GBPS: return 2500; | |
87 | case IB_RATE_5_GBPS: return 5000; | |
88 | case IB_RATE_10_GBPS: return 10000; | |
89 | case IB_RATE_20_GBPS: return 20000; | |
90 | case IB_RATE_30_GBPS: return 30000; | |
91 | case IB_RATE_40_GBPS: return 40000; | |
92 | case IB_RATE_60_GBPS: return 60000; | |
93 | case IB_RATE_80_GBPS: return 80000; | |
94 | case IB_RATE_120_GBPS: return 120000; | |
95 | case IB_RATE_14_GBPS: return 14062; | |
96 | case IB_RATE_56_GBPS: return 56250; | |
97 | case IB_RATE_112_GBPS: return 112500; | |
98 | case IB_RATE_168_GBPS: return 168750; | |
99 | case IB_RATE_25_GBPS: return 25781; | |
100 | case IB_RATE_100_GBPS: return 103125; | |
101 | case IB_RATE_200_GBPS: return 206250; | |
102 | case IB_RATE_300_GBPS: return 309375; | |
103 | default: return -1; | |
104 | } | |
105 | } | |
106 | EXPORT_SYMBOL(ib_rate_to_mbps); | |
107 | ||
07ebafba TT |
108 | enum rdma_transport_type |
109 | rdma_node_get_transport(enum rdma_node_type node_type) | |
110 | { | |
111 | switch (node_type) { | |
112 | case RDMA_NODE_IB_CA: | |
113 | case RDMA_NODE_IB_SWITCH: | |
114 | case RDMA_NODE_IB_ROUTER: | |
115 | return RDMA_TRANSPORT_IB; | |
116 | case RDMA_NODE_RNIC: | |
117 | return RDMA_TRANSPORT_IWARP; | |
180771a3 UM |
118 | case RDMA_NODE_USNIC: |
119 | return RDMA_TRANSPORT_USNIC; | |
07ebafba TT |
120 | default: |
121 | BUG(); | |
122 | return 0; | |
123 | } | |
124 | } | |
125 | EXPORT_SYMBOL(rdma_node_get_transport); | |
126 | ||
a3f5adaf EC |
127 | enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) |
128 | { | |
129 | if (device->get_link_layer) | |
130 | return device->get_link_layer(device, port_num); | |
131 | ||
132 | switch (rdma_node_get_transport(device->node_type)) { | |
133 | case RDMA_TRANSPORT_IB: | |
134 | return IB_LINK_LAYER_INFINIBAND; | |
135 | case RDMA_TRANSPORT_IWARP: | |
180771a3 | 136 | case RDMA_TRANSPORT_USNIC: |
a3f5adaf EC |
137 | return IB_LINK_LAYER_ETHERNET; |
138 | default: | |
139 | return IB_LINK_LAYER_UNSPECIFIED; | |
140 | } | |
141 | } | |
142 | EXPORT_SYMBOL(rdma_port_get_link_layer); | |
143 | ||
1da177e4 LT |
144 | /* Protection domains */ |
145 | ||
146 | struct ib_pd *ib_alloc_pd(struct ib_device *device) | |
147 | { | |
148 | struct ib_pd *pd; | |
149 | ||
b5e81bf5 | 150 | pd = device->alloc_pd(device, NULL, NULL); |
1da177e4 LT |
151 | |
152 | if (!IS_ERR(pd)) { | |
b5e81bf5 RD |
153 | pd->device = device; |
154 | pd->uobject = NULL; | |
1da177e4 LT |
155 | atomic_set(&pd->usecnt, 0); |
156 | } | |
157 | ||
158 | return pd; | |
159 | } | |
160 | EXPORT_SYMBOL(ib_alloc_pd); | |
161 | ||
162 | int ib_dealloc_pd(struct ib_pd *pd) | |
163 | { | |
164 | if (atomic_read(&pd->usecnt)) | |
165 | return -EBUSY; | |
166 | ||
167 | return pd->device->dealloc_pd(pd); | |
168 | } | |
169 | EXPORT_SYMBOL(ib_dealloc_pd); | |
170 | ||
171 | /* Address handles */ | |
172 | ||
173 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
174 | { | |
175 | struct ib_ah *ah; | |
176 | ||
177 | ah = pd->device->create_ah(pd, ah_attr); | |
178 | ||
179 | if (!IS_ERR(ah)) { | |
b5e81bf5 RD |
180 | ah->device = pd->device; |
181 | ah->pd = pd; | |
182 | ah->uobject = NULL; | |
1da177e4 LT |
183 | atomic_inc(&pd->usecnt); |
184 | } | |
185 | ||
186 | return ah; | |
187 | } | |
188 | EXPORT_SYMBOL(ib_create_ah); | |
189 | ||
4e00d694 SH |
190 | int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, |
191 | struct ib_grh *grh, struct ib_ah_attr *ah_attr) | |
513789ed | 192 | { |
513789ed HR |
193 | u32 flow_class; |
194 | u16 gid_index; | |
195 | int ret; | |
dd5f03be MB |
196 | int is_eth = (rdma_port_get_link_layer(device, port_num) == |
197 | IB_LINK_LAYER_ETHERNET); | |
513789ed | 198 | |
4e00d694 | 199 | memset(ah_attr, 0, sizeof *ah_attr); |
dd5f03be MB |
200 | if (is_eth) { |
201 | if (!(wc->wc_flags & IB_WC_GRH)) | |
202 | return -EPROTOTYPE; | |
203 | ||
204 | if (wc->wc_flags & IB_WC_WITH_SMAC && | |
205 | wc->wc_flags & IB_WC_WITH_VLAN) { | |
206 | memcpy(ah_attr->dmac, wc->smac, ETH_ALEN); | |
207 | ah_attr->vlan_id = wc->vlan_id; | |
208 | } else { | |
209 | ret = rdma_addr_find_dmac_by_grh(&grh->dgid, &grh->sgid, | |
210 | ah_attr->dmac, &ah_attr->vlan_id); | |
211 | if (ret) | |
212 | return ret; | |
213 | } | |
214 | } else { | |
215 | ah_attr->vlan_id = 0xffff; | |
216 | } | |
217 | ||
4e00d694 SH |
218 | ah_attr->dlid = wc->slid; |
219 | ah_attr->sl = wc->sl; | |
220 | ah_attr->src_path_bits = wc->dlid_path_bits; | |
221 | ah_attr->port_num = port_num; | |
513789ed HR |
222 | |
223 | if (wc->wc_flags & IB_WC_GRH) { | |
4e00d694 SH |
224 | ah_attr->ah_flags = IB_AH_GRH; |
225 | ah_attr->grh.dgid = grh->sgid; | |
513789ed | 226 | |
4e00d694 | 227 | ret = ib_find_cached_gid(device, &grh->dgid, &port_num, |
513789ed HR |
228 | &gid_index); |
229 | if (ret) | |
4e00d694 | 230 | return ret; |
513789ed | 231 | |
4e00d694 | 232 | ah_attr->grh.sgid_index = (u8) gid_index; |
497677ab | 233 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
4e00d694 | 234 | ah_attr->grh.flow_label = flow_class & 0xFFFFF; |
47645d8d | 235 | ah_attr->grh.hop_limit = 0xFF; |
4e00d694 | 236 | ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF; |
513789ed | 237 | } |
4e00d694 SH |
238 | return 0; |
239 | } | |
240 | EXPORT_SYMBOL(ib_init_ah_from_wc); | |
241 | ||
242 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, | |
243 | struct ib_grh *grh, u8 port_num) | |
244 | { | |
245 | struct ib_ah_attr ah_attr; | |
246 | int ret; | |
247 | ||
248 | ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); | |
249 | if (ret) | |
250 | return ERR_PTR(ret); | |
513789ed HR |
251 | |
252 | return ib_create_ah(pd, &ah_attr); | |
253 | } | |
254 | EXPORT_SYMBOL(ib_create_ah_from_wc); | |
255 | ||
1da177e4 LT |
256 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
257 | { | |
258 | return ah->device->modify_ah ? | |
259 | ah->device->modify_ah(ah, ah_attr) : | |
260 | -ENOSYS; | |
261 | } | |
262 | EXPORT_SYMBOL(ib_modify_ah); | |
263 | ||
264 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) | |
265 | { | |
266 | return ah->device->query_ah ? | |
267 | ah->device->query_ah(ah, ah_attr) : | |
268 | -ENOSYS; | |
269 | } | |
270 | EXPORT_SYMBOL(ib_query_ah); | |
271 | ||
272 | int ib_destroy_ah(struct ib_ah *ah) | |
273 | { | |
274 | struct ib_pd *pd; | |
275 | int ret; | |
276 | ||
277 | pd = ah->pd; | |
278 | ret = ah->device->destroy_ah(ah); | |
279 | if (!ret) | |
280 | atomic_dec(&pd->usecnt); | |
281 | ||
282 | return ret; | |
283 | } | |
284 | EXPORT_SYMBOL(ib_destroy_ah); | |
285 | ||
d41fcc67 RD |
286 | /* Shared receive queues */ |
287 | ||
288 | struct ib_srq *ib_create_srq(struct ib_pd *pd, | |
289 | struct ib_srq_init_attr *srq_init_attr) | |
290 | { | |
291 | struct ib_srq *srq; | |
292 | ||
293 | if (!pd->device->create_srq) | |
294 | return ERR_PTR(-ENOSYS); | |
295 | ||
296 | srq = pd->device->create_srq(pd, srq_init_attr, NULL); | |
297 | ||
298 | if (!IS_ERR(srq)) { | |
299 | srq->device = pd->device; | |
300 | srq->pd = pd; | |
301 | srq->uobject = NULL; | |
302 | srq->event_handler = srq_init_attr->event_handler; | |
303 | srq->srq_context = srq_init_attr->srq_context; | |
96104eda | 304 | srq->srq_type = srq_init_attr->srq_type; |
418d5130 SH |
305 | if (srq->srq_type == IB_SRQT_XRC) { |
306 | srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; | |
307 | srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq; | |
308 | atomic_inc(&srq->ext.xrc.xrcd->usecnt); | |
309 | atomic_inc(&srq->ext.xrc.cq->usecnt); | |
310 | } | |
d41fcc67 RD |
311 | atomic_inc(&pd->usecnt); |
312 | atomic_set(&srq->usecnt, 0); | |
313 | } | |
314 | ||
315 | return srq; | |
316 | } | |
317 | EXPORT_SYMBOL(ib_create_srq); | |
318 | ||
319 | int ib_modify_srq(struct ib_srq *srq, | |
320 | struct ib_srq_attr *srq_attr, | |
321 | enum ib_srq_attr_mask srq_attr_mask) | |
322 | { | |
7ce5eacb DB |
323 | return srq->device->modify_srq ? |
324 | srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : | |
325 | -ENOSYS; | |
d41fcc67 RD |
326 | } |
327 | EXPORT_SYMBOL(ib_modify_srq); | |
328 | ||
329 | int ib_query_srq(struct ib_srq *srq, | |
330 | struct ib_srq_attr *srq_attr) | |
331 | { | |
332 | return srq->device->query_srq ? | |
333 | srq->device->query_srq(srq, srq_attr) : -ENOSYS; | |
334 | } | |
335 | EXPORT_SYMBOL(ib_query_srq); | |
336 | ||
337 | int ib_destroy_srq(struct ib_srq *srq) | |
338 | { | |
339 | struct ib_pd *pd; | |
418d5130 SH |
340 | enum ib_srq_type srq_type; |
341 | struct ib_xrcd *uninitialized_var(xrcd); | |
342 | struct ib_cq *uninitialized_var(cq); | |
d41fcc67 RD |
343 | int ret; |
344 | ||
345 | if (atomic_read(&srq->usecnt)) | |
346 | return -EBUSY; | |
347 | ||
348 | pd = srq->pd; | |
418d5130 SH |
349 | srq_type = srq->srq_type; |
350 | if (srq_type == IB_SRQT_XRC) { | |
351 | xrcd = srq->ext.xrc.xrcd; | |
352 | cq = srq->ext.xrc.cq; | |
353 | } | |
d41fcc67 RD |
354 | |
355 | ret = srq->device->destroy_srq(srq); | |
418d5130 | 356 | if (!ret) { |
d41fcc67 | 357 | atomic_dec(&pd->usecnt); |
418d5130 SH |
358 | if (srq_type == IB_SRQT_XRC) { |
359 | atomic_dec(&xrcd->usecnt); | |
360 | atomic_dec(&cq->usecnt); | |
361 | } | |
362 | } | |
d41fcc67 RD |
363 | |
364 | return ret; | |
365 | } | |
366 | EXPORT_SYMBOL(ib_destroy_srq); | |
367 | ||
1da177e4 LT |
368 | /* Queue pairs */ |
369 | ||
0e0ec7e0 SH |
370 | static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) |
371 | { | |
372 | struct ib_qp *qp = context; | |
73c40c61 | 373 | unsigned long flags; |
0e0ec7e0 | 374 | |
73c40c61 | 375 | spin_lock_irqsave(&qp->device->event_handler_lock, flags); |
0e0ec7e0 | 376 | list_for_each_entry(event->element.qp, &qp->open_list, open_list) |
eec9e29f SP |
377 | if (event->element.qp->event_handler) |
378 | event->element.qp->event_handler(event, event->element.qp->qp_context); | |
73c40c61 | 379 | spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); |
0e0ec7e0 SH |
380 | } |
381 | ||
d3d72d90 SH |
382 | static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) |
383 | { | |
384 | mutex_lock(&xrcd->tgt_qp_mutex); | |
385 | list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); | |
386 | mutex_unlock(&xrcd->tgt_qp_mutex); | |
387 | } | |
388 | ||
0e0ec7e0 SH |
389 | static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, |
390 | void (*event_handler)(struct ib_event *, void *), | |
391 | void *qp_context) | |
d3d72d90 | 392 | { |
0e0ec7e0 SH |
393 | struct ib_qp *qp; |
394 | unsigned long flags; | |
395 | ||
396 | qp = kzalloc(sizeof *qp, GFP_KERNEL); | |
397 | if (!qp) | |
398 | return ERR_PTR(-ENOMEM); | |
399 | ||
400 | qp->real_qp = real_qp; | |
401 | atomic_inc(&real_qp->usecnt); | |
402 | qp->device = real_qp->device; | |
403 | qp->event_handler = event_handler; | |
404 | qp->qp_context = qp_context; | |
405 | qp->qp_num = real_qp->qp_num; | |
406 | qp->qp_type = real_qp->qp_type; | |
407 | ||
408 | spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); | |
409 | list_add(&qp->open_list, &real_qp->open_list); | |
410 | spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); | |
411 | ||
412 | return qp; | |
413 | } | |
414 | ||
415 | struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, | |
416 | struct ib_qp_open_attr *qp_open_attr) | |
417 | { | |
418 | struct ib_qp *qp, *real_qp; | |
419 | ||
420 | if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) | |
421 | return ERR_PTR(-EINVAL); | |
422 | ||
423 | qp = ERR_PTR(-EINVAL); | |
d3d72d90 | 424 | mutex_lock(&xrcd->tgt_qp_mutex); |
0e0ec7e0 SH |
425 | list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { |
426 | if (real_qp->qp_num == qp_open_attr->qp_num) { | |
427 | qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, | |
428 | qp_open_attr->qp_context); | |
429 | break; | |
430 | } | |
431 | } | |
d3d72d90 | 432 | mutex_unlock(&xrcd->tgt_qp_mutex); |
0e0ec7e0 | 433 | return qp; |
d3d72d90 | 434 | } |
0e0ec7e0 | 435 | EXPORT_SYMBOL(ib_open_qp); |
d3d72d90 | 436 | |
1da177e4 LT |
437 | struct ib_qp *ib_create_qp(struct ib_pd *pd, |
438 | struct ib_qp_init_attr *qp_init_attr) | |
439 | { | |
0e0ec7e0 | 440 | struct ib_qp *qp, *real_qp; |
b42b63cf | 441 | struct ib_device *device; |
1da177e4 | 442 | |
b42b63cf SH |
443 | device = pd ? pd->device : qp_init_attr->xrcd->device; |
444 | qp = device->create_qp(pd, qp_init_attr, NULL); | |
1da177e4 LT |
445 | |
446 | if (!IS_ERR(qp)) { | |
0e0ec7e0 SH |
447 | qp->device = device; |
448 | qp->real_qp = qp; | |
449 | qp->uobject = NULL; | |
450 | qp->qp_type = qp_init_attr->qp_type; | |
b42b63cf | 451 | |
e47e321a | 452 | atomic_set(&qp->usecnt, 0); |
b42b63cf | 453 | if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { |
0e0ec7e0 SH |
454 | qp->event_handler = __ib_shared_qp_event_handler; |
455 | qp->qp_context = qp; | |
b42b63cf SH |
456 | qp->pd = NULL; |
457 | qp->send_cq = qp->recv_cq = NULL; | |
458 | qp->srq = NULL; | |
459 | qp->xrcd = qp_init_attr->xrcd; | |
460 | atomic_inc(&qp_init_attr->xrcd->usecnt); | |
0e0ec7e0 | 461 | INIT_LIST_HEAD(&qp->open_list); |
0e0ec7e0 SH |
462 | |
463 | real_qp = qp; | |
464 | qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, | |
465 | qp_init_attr->qp_context); | |
466 | if (!IS_ERR(qp)) | |
467 | __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); | |
468 | else | |
469 | real_qp->device->destroy_qp(real_qp); | |
b42b63cf | 470 | } else { |
0e0ec7e0 SH |
471 | qp->event_handler = qp_init_attr->event_handler; |
472 | qp->qp_context = qp_init_attr->qp_context; | |
b42b63cf SH |
473 | if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { |
474 | qp->recv_cq = NULL; | |
475 | qp->srq = NULL; | |
476 | } else { | |
477 | qp->recv_cq = qp_init_attr->recv_cq; | |
478 | atomic_inc(&qp_init_attr->recv_cq->usecnt); | |
479 | qp->srq = qp_init_attr->srq; | |
480 | if (qp->srq) | |
481 | atomic_inc(&qp_init_attr->srq->usecnt); | |
482 | } | |
483 | ||
484 | qp->pd = pd; | |
485 | qp->send_cq = qp_init_attr->send_cq; | |
486 | qp->xrcd = NULL; | |
487 | ||
488 | atomic_inc(&pd->usecnt); | |
489 | atomic_inc(&qp_init_attr->send_cq->usecnt); | |
490 | } | |
1da177e4 LT |
491 | } |
492 | ||
493 | return qp; | |
494 | } | |
495 | EXPORT_SYMBOL(ib_create_qp); | |
496 | ||
8a51866f RD |
497 | static const struct { |
498 | int valid; | |
b42b63cf | 499 | enum ib_qp_attr_mask req_param[IB_QPT_MAX]; |
dd5f03be | 500 | enum ib_qp_attr_mask req_param_add_eth[IB_QPT_MAX]; |
b42b63cf | 501 | enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; |
dd5f03be | 502 | enum ib_qp_attr_mask opt_param_add_eth[IB_QPT_MAX]; |
8a51866f RD |
503 | } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { |
504 | [IB_QPS_RESET] = { | |
505 | [IB_QPS_RESET] = { .valid = 1 }, | |
8a51866f RD |
506 | [IB_QPS_INIT] = { |
507 | .valid = 1, | |
508 | .req_param = { | |
509 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
510 | IB_QP_PORT | | |
511 | IB_QP_QKEY), | |
c938a616 | 512 | [IB_QPT_RAW_PACKET] = IB_QP_PORT, |
8a51866f RD |
513 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | |
514 | IB_QP_PORT | | |
515 | IB_QP_ACCESS_FLAGS), | |
516 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
517 | IB_QP_PORT | | |
518 | IB_QP_ACCESS_FLAGS), | |
b42b63cf SH |
519 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
520 | IB_QP_PORT | | |
521 | IB_QP_ACCESS_FLAGS), | |
522 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | | |
523 | IB_QP_PORT | | |
524 | IB_QP_ACCESS_FLAGS), | |
8a51866f RD |
525 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
526 | IB_QP_QKEY), | |
527 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
528 | IB_QP_QKEY), | |
529 | } | |
530 | }, | |
531 | }, | |
532 | [IB_QPS_INIT] = { | |
533 | [IB_QPS_RESET] = { .valid = 1 }, | |
534 | [IB_QPS_ERR] = { .valid = 1 }, | |
535 | [IB_QPS_INIT] = { | |
536 | .valid = 1, | |
537 | .opt_param = { | |
538 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
539 | IB_QP_PORT | | |
540 | IB_QP_QKEY), | |
541 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
542 | IB_QP_PORT | | |
543 | IB_QP_ACCESS_FLAGS), | |
544 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
545 | IB_QP_PORT | | |
546 | IB_QP_ACCESS_FLAGS), | |
b42b63cf SH |
547 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
548 | IB_QP_PORT | | |
549 | IB_QP_ACCESS_FLAGS), | |
550 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | | |
551 | IB_QP_PORT | | |
552 | IB_QP_ACCESS_FLAGS), | |
8a51866f RD |
553 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
554 | IB_QP_QKEY), | |
555 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
556 | IB_QP_QKEY), | |
557 | } | |
558 | }, | |
559 | [IB_QPS_RTR] = { | |
560 | .valid = 1, | |
561 | .req_param = { | |
562 | [IB_QPT_UC] = (IB_QP_AV | | |
563 | IB_QP_PATH_MTU | | |
564 | IB_QP_DEST_QPN | | |
565 | IB_QP_RQ_PSN), | |
566 | [IB_QPT_RC] = (IB_QP_AV | | |
567 | IB_QP_PATH_MTU | | |
568 | IB_QP_DEST_QPN | | |
569 | IB_QP_RQ_PSN | | |
570 | IB_QP_MAX_DEST_RD_ATOMIC | | |
571 | IB_QP_MIN_RNR_TIMER), | |
b42b63cf SH |
572 | [IB_QPT_XRC_INI] = (IB_QP_AV | |
573 | IB_QP_PATH_MTU | | |
574 | IB_QP_DEST_QPN | | |
575 | IB_QP_RQ_PSN), | |
576 | [IB_QPT_XRC_TGT] = (IB_QP_AV | | |
577 | IB_QP_PATH_MTU | | |
578 | IB_QP_DEST_QPN | | |
579 | IB_QP_RQ_PSN | | |
580 | IB_QP_MAX_DEST_RD_ATOMIC | | |
581 | IB_QP_MIN_RNR_TIMER), | |
8a51866f | 582 | }, |
dd5f03be MB |
583 | .req_param_add_eth = { |
584 | [IB_QPT_RC] = (IB_QP_SMAC), | |
585 | [IB_QPT_UC] = (IB_QP_SMAC), | |
586 | [IB_QPT_XRC_INI] = (IB_QP_SMAC), | |
587 | [IB_QPT_XRC_TGT] = (IB_QP_SMAC) | |
588 | }, | |
8a51866f RD |
589 | .opt_param = { |
590 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
591 | IB_QP_QKEY), | |
592 | [IB_QPT_UC] = (IB_QP_ALT_PATH | | |
593 | IB_QP_ACCESS_FLAGS | | |
594 | IB_QP_PKEY_INDEX), | |
595 | [IB_QPT_RC] = (IB_QP_ALT_PATH | | |
596 | IB_QP_ACCESS_FLAGS | | |
597 | IB_QP_PKEY_INDEX), | |
b42b63cf SH |
598 | [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | |
599 | IB_QP_ACCESS_FLAGS | | |
600 | IB_QP_PKEY_INDEX), | |
601 | [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | | |
602 | IB_QP_ACCESS_FLAGS | | |
603 | IB_QP_PKEY_INDEX), | |
8a51866f RD |
604 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
605 | IB_QP_QKEY), | |
606 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
607 | IB_QP_QKEY), | |
dd5f03be MB |
608 | }, |
609 | .opt_param_add_eth = { | |
610 | [IB_QPT_RC] = (IB_QP_ALT_SMAC | | |
611 | IB_QP_VID | | |
612 | IB_QP_ALT_VID), | |
613 | [IB_QPT_UC] = (IB_QP_ALT_SMAC | | |
614 | IB_QP_VID | | |
615 | IB_QP_ALT_VID), | |
616 | [IB_QPT_XRC_INI] = (IB_QP_ALT_SMAC | | |
617 | IB_QP_VID | | |
618 | IB_QP_ALT_VID), | |
619 | [IB_QPT_XRC_TGT] = (IB_QP_ALT_SMAC | | |
620 | IB_QP_VID | | |
621 | IB_QP_ALT_VID) | |
622 | } | |
8a51866f RD |
623 | } |
624 | }, | |
625 | [IB_QPS_RTR] = { | |
626 | [IB_QPS_RESET] = { .valid = 1 }, | |
627 | [IB_QPS_ERR] = { .valid = 1 }, | |
628 | [IB_QPS_RTS] = { | |
629 | .valid = 1, | |
630 | .req_param = { | |
631 | [IB_QPT_UD] = IB_QP_SQ_PSN, | |
632 | [IB_QPT_UC] = IB_QP_SQ_PSN, | |
633 | [IB_QPT_RC] = (IB_QP_TIMEOUT | | |
634 | IB_QP_RETRY_CNT | | |
635 | IB_QP_RNR_RETRY | | |
636 | IB_QP_SQ_PSN | | |
637 | IB_QP_MAX_QP_RD_ATOMIC), | |
b42b63cf SH |
638 | [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | |
639 | IB_QP_RETRY_CNT | | |
640 | IB_QP_RNR_RETRY | | |
641 | IB_QP_SQ_PSN | | |
642 | IB_QP_MAX_QP_RD_ATOMIC), | |
643 | [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | | |
644 | IB_QP_SQ_PSN), | |
8a51866f RD |
645 | [IB_QPT_SMI] = IB_QP_SQ_PSN, |
646 | [IB_QPT_GSI] = IB_QP_SQ_PSN, | |
647 | }, | |
648 | .opt_param = { | |
649 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
650 | IB_QP_QKEY), | |
651 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
652 | IB_QP_ALT_PATH | | |
653 | IB_QP_ACCESS_FLAGS | | |
654 | IB_QP_PATH_MIG_STATE), | |
655 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
656 | IB_QP_ALT_PATH | | |
657 | IB_QP_ACCESS_FLAGS | | |
658 | IB_QP_MIN_RNR_TIMER | | |
659 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
660 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
661 | IB_QP_ALT_PATH | | |
662 | IB_QP_ACCESS_FLAGS | | |
663 | IB_QP_PATH_MIG_STATE), | |
664 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
665 | IB_QP_ALT_PATH | | |
666 | IB_QP_ACCESS_FLAGS | | |
667 | IB_QP_MIN_RNR_TIMER | | |
668 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
669 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
670 | IB_QP_QKEY), | |
671 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
672 | IB_QP_QKEY), | |
673 | } | |
674 | } | |
675 | }, | |
676 | [IB_QPS_RTS] = { | |
677 | [IB_QPS_RESET] = { .valid = 1 }, | |
678 | [IB_QPS_ERR] = { .valid = 1 }, | |
679 | [IB_QPS_RTS] = { | |
680 | .valid = 1, | |
681 | .opt_param = { | |
682 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
683 | IB_QP_QKEY), | |
4546d31d DB |
684 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
685 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
686 | IB_QP_ALT_PATH | |
687 | IB_QP_PATH_MIG_STATE), | |
4546d31d DB |
688 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
689 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
690 | IB_QP_ALT_PATH | |
691 | IB_QP_PATH_MIG_STATE | | |
692 | IB_QP_MIN_RNR_TIMER), | |
b42b63cf SH |
693 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
694 | IB_QP_ACCESS_FLAGS | | |
695 | IB_QP_ALT_PATH | | |
696 | IB_QP_PATH_MIG_STATE), | |
697 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
698 | IB_QP_ACCESS_FLAGS | | |
699 | IB_QP_ALT_PATH | | |
700 | IB_QP_PATH_MIG_STATE | | |
701 | IB_QP_MIN_RNR_TIMER), | |
8a51866f RD |
702 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
703 | IB_QP_QKEY), | |
704 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
705 | IB_QP_QKEY), | |
706 | } | |
707 | }, | |
708 | [IB_QPS_SQD] = { | |
709 | .valid = 1, | |
710 | .opt_param = { | |
711 | [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
712 | [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
713 | [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
b42b63cf SH |
714 | [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
715 | [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ | |
8a51866f RD |
716 | [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
717 | [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY | |
718 | } | |
719 | }, | |
720 | }, | |
721 | [IB_QPS_SQD] = { | |
722 | [IB_QPS_RESET] = { .valid = 1 }, | |
723 | [IB_QPS_ERR] = { .valid = 1 }, | |
724 | [IB_QPS_RTS] = { | |
725 | .valid = 1, | |
726 | .opt_param = { | |
727 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
728 | IB_QP_QKEY), | |
729 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
730 | IB_QP_ALT_PATH | | |
731 | IB_QP_ACCESS_FLAGS | | |
732 | IB_QP_PATH_MIG_STATE), | |
733 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
734 | IB_QP_ALT_PATH | | |
735 | IB_QP_ACCESS_FLAGS | | |
736 | IB_QP_MIN_RNR_TIMER | | |
737 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
738 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
739 | IB_QP_ALT_PATH | | |
740 | IB_QP_ACCESS_FLAGS | | |
741 | IB_QP_PATH_MIG_STATE), | |
742 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
743 | IB_QP_ALT_PATH | | |
744 | IB_QP_ACCESS_FLAGS | | |
745 | IB_QP_MIN_RNR_TIMER | | |
746 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
747 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
748 | IB_QP_QKEY), | |
749 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
750 | IB_QP_QKEY), | |
751 | } | |
752 | }, | |
753 | [IB_QPS_SQD] = { | |
754 | .valid = 1, | |
755 | .opt_param = { | |
756 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
757 | IB_QP_QKEY), | |
758 | [IB_QPT_UC] = (IB_QP_AV | | |
8a51866f RD |
759 | IB_QP_ALT_PATH | |
760 | IB_QP_ACCESS_FLAGS | | |
761 | IB_QP_PKEY_INDEX | | |
762 | IB_QP_PATH_MIG_STATE), | |
763 | [IB_QPT_RC] = (IB_QP_PORT | | |
764 | IB_QP_AV | | |
765 | IB_QP_TIMEOUT | | |
766 | IB_QP_RETRY_CNT | | |
767 | IB_QP_RNR_RETRY | | |
768 | IB_QP_MAX_QP_RD_ATOMIC | | |
769 | IB_QP_MAX_DEST_RD_ATOMIC | | |
8a51866f RD |
770 | IB_QP_ALT_PATH | |
771 | IB_QP_ACCESS_FLAGS | | |
772 | IB_QP_PKEY_INDEX | | |
773 | IB_QP_MIN_RNR_TIMER | | |
774 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
775 | [IB_QPT_XRC_INI] = (IB_QP_PORT | |
776 | IB_QP_AV | | |
777 | IB_QP_TIMEOUT | | |
778 | IB_QP_RETRY_CNT | | |
779 | IB_QP_RNR_RETRY | | |
780 | IB_QP_MAX_QP_RD_ATOMIC | | |
781 | IB_QP_ALT_PATH | | |
782 | IB_QP_ACCESS_FLAGS | | |
783 | IB_QP_PKEY_INDEX | | |
784 | IB_QP_PATH_MIG_STATE), | |
785 | [IB_QPT_XRC_TGT] = (IB_QP_PORT | | |
786 | IB_QP_AV | | |
787 | IB_QP_TIMEOUT | | |
788 | IB_QP_MAX_DEST_RD_ATOMIC | | |
789 | IB_QP_ALT_PATH | | |
790 | IB_QP_ACCESS_FLAGS | | |
791 | IB_QP_PKEY_INDEX | | |
792 | IB_QP_MIN_RNR_TIMER | | |
793 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
794 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
795 | IB_QP_QKEY), | |
796 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
797 | IB_QP_QKEY), | |
798 | } | |
799 | } | |
800 | }, | |
801 | [IB_QPS_SQE] = { | |
802 | [IB_QPS_RESET] = { .valid = 1 }, | |
803 | [IB_QPS_ERR] = { .valid = 1 }, | |
804 | [IB_QPS_RTS] = { | |
805 | .valid = 1, | |
806 | .opt_param = { | |
807 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
808 | IB_QP_QKEY), | |
809 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
810 | IB_QP_ACCESS_FLAGS), | |
811 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
812 | IB_QP_QKEY), | |
813 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
814 | IB_QP_QKEY), | |
815 | } | |
816 | } | |
817 | }, | |
818 | [IB_QPS_ERR] = { | |
819 | [IB_QPS_RESET] = { .valid = 1 }, | |
820 | [IB_QPS_ERR] = { .valid = 1 } | |
821 | } | |
822 | }; | |
823 | ||
824 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, | |
dd5f03be MB |
825 | enum ib_qp_type type, enum ib_qp_attr_mask mask, |
826 | enum rdma_link_layer ll) | |
8a51866f RD |
827 | { |
828 | enum ib_qp_attr_mask req_param, opt_param; | |
829 | ||
830 | if (cur_state < 0 || cur_state > IB_QPS_ERR || | |
831 | next_state < 0 || next_state > IB_QPS_ERR) | |
832 | return 0; | |
833 | ||
834 | if (mask & IB_QP_CUR_STATE && | |
835 | cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && | |
836 | cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) | |
837 | return 0; | |
838 | ||
839 | if (!qp_state_table[cur_state][next_state].valid) | |
840 | return 0; | |
841 | ||
842 | req_param = qp_state_table[cur_state][next_state].req_param[type]; | |
843 | opt_param = qp_state_table[cur_state][next_state].opt_param[type]; | |
844 | ||
dd5f03be MB |
845 | if (ll == IB_LINK_LAYER_ETHERNET) { |
846 | req_param |= qp_state_table[cur_state][next_state]. | |
847 | req_param_add_eth[type]; | |
848 | opt_param |= qp_state_table[cur_state][next_state]. | |
849 | opt_param_add_eth[type]; | |
850 | } | |
851 | ||
8a51866f RD |
852 | if ((mask & req_param) != req_param) |
853 | return 0; | |
854 | ||
855 | if (mask & ~(req_param | opt_param | IB_QP_STATE)) | |
856 | return 0; | |
857 | ||
858 | return 1; | |
859 | } | |
860 | EXPORT_SYMBOL(ib_modify_qp_is_ok); | |
861 | ||
1da177e4 LT |
862 | int ib_modify_qp(struct ib_qp *qp, |
863 | struct ib_qp_attr *qp_attr, | |
864 | int qp_attr_mask) | |
865 | { | |
0e0ec7e0 | 866 | return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); |
1da177e4 LT |
867 | } |
868 | EXPORT_SYMBOL(ib_modify_qp); | |
869 | ||
870 | int ib_query_qp(struct ib_qp *qp, | |
871 | struct ib_qp_attr *qp_attr, | |
872 | int qp_attr_mask, | |
873 | struct ib_qp_init_attr *qp_init_attr) | |
874 | { | |
875 | return qp->device->query_qp ? | |
0e0ec7e0 | 876 | qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) : |
1da177e4 LT |
877 | -ENOSYS; |
878 | } | |
879 | EXPORT_SYMBOL(ib_query_qp); | |
880 | ||
0e0ec7e0 SH |
881 | int ib_close_qp(struct ib_qp *qp) |
882 | { | |
883 | struct ib_qp *real_qp; | |
884 | unsigned long flags; | |
885 | ||
886 | real_qp = qp->real_qp; | |
887 | if (real_qp == qp) | |
888 | return -EINVAL; | |
889 | ||
890 | spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); | |
891 | list_del(&qp->open_list); | |
892 | spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); | |
893 | ||
894 | atomic_dec(&real_qp->usecnt); | |
895 | kfree(qp); | |
896 | ||
897 | return 0; | |
898 | } | |
899 | EXPORT_SYMBOL(ib_close_qp); | |
900 | ||
901 | static int __ib_destroy_shared_qp(struct ib_qp *qp) | |
902 | { | |
903 | struct ib_xrcd *xrcd; | |
904 | struct ib_qp *real_qp; | |
905 | int ret; | |
906 | ||
907 | real_qp = qp->real_qp; | |
908 | xrcd = real_qp->xrcd; | |
909 | ||
910 | mutex_lock(&xrcd->tgt_qp_mutex); | |
911 | ib_close_qp(qp); | |
912 | if (atomic_read(&real_qp->usecnt) == 0) | |
913 | list_del(&real_qp->xrcd_list); | |
914 | else | |
915 | real_qp = NULL; | |
916 | mutex_unlock(&xrcd->tgt_qp_mutex); | |
917 | ||
918 | if (real_qp) { | |
919 | ret = ib_destroy_qp(real_qp); | |
920 | if (!ret) | |
921 | atomic_dec(&xrcd->usecnt); | |
922 | else | |
923 | __ib_insert_xrcd_qp(xrcd, real_qp); | |
924 | } | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
1da177e4 LT |
929 | int ib_destroy_qp(struct ib_qp *qp) |
930 | { | |
931 | struct ib_pd *pd; | |
932 | struct ib_cq *scq, *rcq; | |
933 | struct ib_srq *srq; | |
934 | int ret; | |
935 | ||
0e0ec7e0 SH |
936 | if (atomic_read(&qp->usecnt)) |
937 | return -EBUSY; | |
938 | ||
939 | if (qp->real_qp != qp) | |
940 | return __ib_destroy_shared_qp(qp); | |
941 | ||
b42b63cf SH |
942 | pd = qp->pd; |
943 | scq = qp->send_cq; | |
944 | rcq = qp->recv_cq; | |
945 | srq = qp->srq; | |
1da177e4 LT |
946 | |
947 | ret = qp->device->destroy_qp(qp); | |
948 | if (!ret) { | |
b42b63cf SH |
949 | if (pd) |
950 | atomic_dec(&pd->usecnt); | |
951 | if (scq) | |
952 | atomic_dec(&scq->usecnt); | |
953 | if (rcq) | |
954 | atomic_dec(&rcq->usecnt); | |
1da177e4 LT |
955 | if (srq) |
956 | atomic_dec(&srq->usecnt); | |
957 | } | |
958 | ||
959 | return ret; | |
960 | } | |
961 | EXPORT_SYMBOL(ib_destroy_qp); | |
962 | ||
963 | /* Completion queues */ | |
964 | ||
965 | struct ib_cq *ib_create_cq(struct ib_device *device, | |
966 | ib_comp_handler comp_handler, | |
967 | void (*event_handler)(struct ib_event *, void *), | |
f4fd0b22 | 968 | void *cq_context, int cqe, int comp_vector) |
1da177e4 LT |
969 | { |
970 | struct ib_cq *cq; | |
971 | ||
f4fd0b22 | 972 | cq = device->create_cq(device, cqe, comp_vector, NULL, NULL); |
1da177e4 LT |
973 | |
974 | if (!IS_ERR(cq)) { | |
975 | cq->device = device; | |
b5e81bf5 | 976 | cq->uobject = NULL; |
1da177e4 LT |
977 | cq->comp_handler = comp_handler; |
978 | cq->event_handler = event_handler; | |
979 | cq->cq_context = cq_context; | |
980 | atomic_set(&cq->usecnt, 0); | |
981 | } | |
982 | ||
983 | return cq; | |
984 | } | |
985 | EXPORT_SYMBOL(ib_create_cq); | |
986 | ||
2dd57162 EC |
987 | int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) |
988 | { | |
989 | return cq->device->modify_cq ? | |
990 | cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS; | |
991 | } | |
992 | EXPORT_SYMBOL(ib_modify_cq); | |
993 | ||
1da177e4 LT |
994 | int ib_destroy_cq(struct ib_cq *cq) |
995 | { | |
996 | if (atomic_read(&cq->usecnt)) | |
997 | return -EBUSY; | |
998 | ||
999 | return cq->device->destroy_cq(cq); | |
1000 | } | |
1001 | EXPORT_SYMBOL(ib_destroy_cq); | |
1002 | ||
a74cd4af | 1003 | int ib_resize_cq(struct ib_cq *cq, int cqe) |
1da177e4 | 1004 | { |
40de2e54 | 1005 | return cq->device->resize_cq ? |
33b9b3ee | 1006 | cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; |
1da177e4 LT |
1007 | } |
1008 | EXPORT_SYMBOL(ib_resize_cq); | |
1009 | ||
1010 | /* Memory regions */ | |
1011 | ||
1012 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) | |
1013 | { | |
1014 | struct ib_mr *mr; | |
1c636f80 EC |
1015 | int err; |
1016 | ||
1017 | err = ib_check_mr_access(mr_access_flags); | |
1018 | if (err) | |
1019 | return ERR_PTR(err); | |
1da177e4 LT |
1020 | |
1021 | mr = pd->device->get_dma_mr(pd, mr_access_flags); | |
1022 | ||
1023 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
1024 | mr->device = pd->device; |
1025 | mr->pd = pd; | |
1026 | mr->uobject = NULL; | |
1da177e4 LT |
1027 | atomic_inc(&pd->usecnt); |
1028 | atomic_set(&mr->usecnt, 0); | |
1029 | } | |
1030 | ||
1031 | return mr; | |
1032 | } | |
1033 | EXPORT_SYMBOL(ib_get_dma_mr); | |
1034 | ||
1035 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, | |
1036 | struct ib_phys_buf *phys_buf_array, | |
1037 | int num_phys_buf, | |
1038 | int mr_access_flags, | |
1039 | u64 *iova_start) | |
1040 | { | |
1041 | struct ib_mr *mr; | |
1c636f80 EC |
1042 | int err; |
1043 | ||
1044 | err = ib_check_mr_access(mr_access_flags); | |
1045 | if (err) | |
1046 | return ERR_PTR(err); | |
1da177e4 | 1047 | |
7ce5eacb DB |
1048 | if (!pd->device->reg_phys_mr) |
1049 | return ERR_PTR(-ENOSYS); | |
1050 | ||
1da177e4 LT |
1051 | mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, |
1052 | mr_access_flags, iova_start); | |
1053 | ||
1054 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
1055 | mr->device = pd->device; |
1056 | mr->pd = pd; | |
1057 | mr->uobject = NULL; | |
1da177e4 LT |
1058 | atomic_inc(&pd->usecnt); |
1059 | atomic_set(&mr->usecnt, 0); | |
1060 | } | |
1061 | ||
1062 | return mr; | |
1063 | } | |
1064 | EXPORT_SYMBOL(ib_reg_phys_mr); | |
1065 | ||
1066 | int ib_rereg_phys_mr(struct ib_mr *mr, | |
1067 | int mr_rereg_mask, | |
1068 | struct ib_pd *pd, | |
1069 | struct ib_phys_buf *phys_buf_array, | |
1070 | int num_phys_buf, | |
1071 | int mr_access_flags, | |
1072 | u64 *iova_start) | |
1073 | { | |
1074 | struct ib_pd *old_pd; | |
1075 | int ret; | |
1076 | ||
1c636f80 EC |
1077 | ret = ib_check_mr_access(mr_access_flags); |
1078 | if (ret) | |
1079 | return ret; | |
1080 | ||
1da177e4 LT |
1081 | if (!mr->device->rereg_phys_mr) |
1082 | return -ENOSYS; | |
1083 | ||
1084 | if (atomic_read(&mr->usecnt)) | |
1085 | return -EBUSY; | |
1086 | ||
1087 | old_pd = mr->pd; | |
1088 | ||
1089 | ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, | |
1090 | phys_buf_array, num_phys_buf, | |
1091 | mr_access_flags, iova_start); | |
1092 | ||
1093 | if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { | |
1094 | atomic_dec(&old_pd->usecnt); | |
1095 | atomic_inc(&pd->usecnt); | |
1096 | } | |
1097 | ||
1098 | return ret; | |
1099 | } | |
1100 | EXPORT_SYMBOL(ib_rereg_phys_mr); | |
1101 | ||
1102 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) | |
1103 | { | |
1104 | return mr->device->query_mr ? | |
1105 | mr->device->query_mr(mr, mr_attr) : -ENOSYS; | |
1106 | } | |
1107 | EXPORT_SYMBOL(ib_query_mr); | |
1108 | ||
1109 | int ib_dereg_mr(struct ib_mr *mr) | |
1110 | { | |
1111 | struct ib_pd *pd; | |
1112 | int ret; | |
1113 | ||
1114 | if (atomic_read(&mr->usecnt)) | |
1115 | return -EBUSY; | |
1116 | ||
1117 | pd = mr->pd; | |
1118 | ret = mr->device->dereg_mr(mr); | |
1119 | if (!ret) | |
1120 | atomic_dec(&pd->usecnt); | |
1121 | ||
1122 | return ret; | |
1123 | } | |
1124 | EXPORT_SYMBOL(ib_dereg_mr); | |
1125 | ||
00f7ec36 SW |
1126 | struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len) |
1127 | { | |
1128 | struct ib_mr *mr; | |
1129 | ||
1130 | if (!pd->device->alloc_fast_reg_mr) | |
1131 | return ERR_PTR(-ENOSYS); | |
1132 | ||
1133 | mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len); | |
1134 | ||
1135 | if (!IS_ERR(mr)) { | |
1136 | mr->device = pd->device; | |
1137 | mr->pd = pd; | |
1138 | mr->uobject = NULL; | |
1139 | atomic_inc(&pd->usecnt); | |
1140 | atomic_set(&mr->usecnt, 0); | |
1141 | } | |
1142 | ||
1143 | return mr; | |
1144 | } | |
1145 | EXPORT_SYMBOL(ib_alloc_fast_reg_mr); | |
1146 | ||
1147 | struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device, | |
1148 | int max_page_list_len) | |
1149 | { | |
1150 | struct ib_fast_reg_page_list *page_list; | |
1151 | ||
1152 | if (!device->alloc_fast_reg_page_list) | |
1153 | return ERR_PTR(-ENOSYS); | |
1154 | ||
1155 | page_list = device->alloc_fast_reg_page_list(device, max_page_list_len); | |
1156 | ||
1157 | if (!IS_ERR(page_list)) { | |
1158 | page_list->device = device; | |
1159 | page_list->max_page_list_len = max_page_list_len; | |
1160 | } | |
1161 | ||
1162 | return page_list; | |
1163 | } | |
1164 | EXPORT_SYMBOL(ib_alloc_fast_reg_page_list); | |
1165 | ||
1166 | void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list) | |
1167 | { | |
1168 | page_list->device->free_fast_reg_page_list(page_list); | |
1169 | } | |
1170 | EXPORT_SYMBOL(ib_free_fast_reg_page_list); | |
1171 | ||
1da177e4 LT |
1172 | /* Memory windows */ |
1173 | ||
7083e42e | 1174 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type) |
1da177e4 LT |
1175 | { |
1176 | struct ib_mw *mw; | |
1177 | ||
1178 | if (!pd->device->alloc_mw) | |
1179 | return ERR_PTR(-ENOSYS); | |
1180 | ||
7083e42e | 1181 | mw = pd->device->alloc_mw(pd, type); |
1da177e4 | 1182 | if (!IS_ERR(mw)) { |
b5e81bf5 RD |
1183 | mw->device = pd->device; |
1184 | mw->pd = pd; | |
1185 | mw->uobject = NULL; | |
7083e42e | 1186 | mw->type = type; |
1da177e4 LT |
1187 | atomic_inc(&pd->usecnt); |
1188 | } | |
1189 | ||
1190 | return mw; | |
1191 | } | |
1192 | EXPORT_SYMBOL(ib_alloc_mw); | |
1193 | ||
1194 | int ib_dealloc_mw(struct ib_mw *mw) | |
1195 | { | |
1196 | struct ib_pd *pd; | |
1197 | int ret; | |
1198 | ||
1199 | pd = mw->pd; | |
1200 | ret = mw->device->dealloc_mw(mw); | |
1201 | if (!ret) | |
1202 | atomic_dec(&pd->usecnt); | |
1203 | ||
1204 | return ret; | |
1205 | } | |
1206 | EXPORT_SYMBOL(ib_dealloc_mw); | |
1207 | ||
1208 | /* "Fast" memory regions */ | |
1209 | ||
1210 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, | |
1211 | int mr_access_flags, | |
1212 | struct ib_fmr_attr *fmr_attr) | |
1213 | { | |
1214 | struct ib_fmr *fmr; | |
1215 | ||
1216 | if (!pd->device->alloc_fmr) | |
1217 | return ERR_PTR(-ENOSYS); | |
1218 | ||
1219 | fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); | |
1220 | if (!IS_ERR(fmr)) { | |
1221 | fmr->device = pd->device; | |
1222 | fmr->pd = pd; | |
1223 | atomic_inc(&pd->usecnt); | |
1224 | } | |
1225 | ||
1226 | return fmr; | |
1227 | } | |
1228 | EXPORT_SYMBOL(ib_alloc_fmr); | |
1229 | ||
1230 | int ib_unmap_fmr(struct list_head *fmr_list) | |
1231 | { | |
1232 | struct ib_fmr *fmr; | |
1233 | ||
1234 | if (list_empty(fmr_list)) | |
1235 | return 0; | |
1236 | ||
1237 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); | |
1238 | return fmr->device->unmap_fmr(fmr_list); | |
1239 | } | |
1240 | EXPORT_SYMBOL(ib_unmap_fmr); | |
1241 | ||
1242 | int ib_dealloc_fmr(struct ib_fmr *fmr) | |
1243 | { | |
1244 | struct ib_pd *pd; | |
1245 | int ret; | |
1246 | ||
1247 | pd = fmr->pd; | |
1248 | ret = fmr->device->dealloc_fmr(fmr); | |
1249 | if (!ret) | |
1250 | atomic_dec(&pd->usecnt); | |
1251 | ||
1252 | return ret; | |
1253 | } | |
1254 | EXPORT_SYMBOL(ib_dealloc_fmr); | |
1255 | ||
1256 | /* Multicast groups */ | |
1257 | ||
1258 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
1259 | { | |
c3bccbfb OG |
1260 | int ret; |
1261 | ||
0c33aeed JM |
1262 | if (!qp->device->attach_mcast) |
1263 | return -ENOSYS; | |
1264 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
1265 | return -EINVAL; | |
1266 | ||
c3bccbfb OG |
1267 | ret = qp->device->attach_mcast(qp, gid, lid); |
1268 | if (!ret) | |
1269 | atomic_inc(&qp->usecnt); | |
1270 | return ret; | |
1da177e4 LT |
1271 | } |
1272 | EXPORT_SYMBOL(ib_attach_mcast); | |
1273 | ||
1274 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
1275 | { | |
c3bccbfb OG |
1276 | int ret; |
1277 | ||
0c33aeed JM |
1278 | if (!qp->device->detach_mcast) |
1279 | return -ENOSYS; | |
1280 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
1281 | return -EINVAL; | |
1282 | ||
c3bccbfb OG |
1283 | ret = qp->device->detach_mcast(qp, gid, lid); |
1284 | if (!ret) | |
1285 | atomic_dec(&qp->usecnt); | |
1286 | return ret; | |
1da177e4 LT |
1287 | } |
1288 | EXPORT_SYMBOL(ib_detach_mcast); | |
59991f94 SH |
1289 | |
1290 | struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device) | |
1291 | { | |
1292 | struct ib_xrcd *xrcd; | |
1293 | ||
1294 | if (!device->alloc_xrcd) | |
1295 | return ERR_PTR(-ENOSYS); | |
1296 | ||
1297 | xrcd = device->alloc_xrcd(device, NULL, NULL); | |
1298 | if (!IS_ERR(xrcd)) { | |
1299 | xrcd->device = device; | |
53d0bd1e | 1300 | xrcd->inode = NULL; |
59991f94 | 1301 | atomic_set(&xrcd->usecnt, 0); |
d3d72d90 SH |
1302 | mutex_init(&xrcd->tgt_qp_mutex); |
1303 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); | |
59991f94 SH |
1304 | } |
1305 | ||
1306 | return xrcd; | |
1307 | } | |
1308 | EXPORT_SYMBOL(ib_alloc_xrcd); | |
1309 | ||
1310 | int ib_dealloc_xrcd(struct ib_xrcd *xrcd) | |
1311 | { | |
d3d72d90 SH |
1312 | struct ib_qp *qp; |
1313 | int ret; | |
1314 | ||
59991f94 SH |
1315 | if (atomic_read(&xrcd->usecnt)) |
1316 | return -EBUSY; | |
1317 | ||
d3d72d90 SH |
1318 | while (!list_empty(&xrcd->tgt_qp_list)) { |
1319 | qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); | |
1320 | ret = ib_destroy_qp(qp); | |
1321 | if (ret) | |
1322 | return ret; | |
1323 | } | |
1324 | ||
59991f94 SH |
1325 | return xrcd->device->dealloc_xrcd(xrcd); |
1326 | } | |
1327 | EXPORT_SYMBOL(ib_dealloc_xrcd); | |
319a441d HHZ |
1328 | |
1329 | struct ib_flow *ib_create_flow(struct ib_qp *qp, | |
1330 | struct ib_flow_attr *flow_attr, | |
1331 | int domain) | |
1332 | { | |
1333 | struct ib_flow *flow_id; | |
1334 | if (!qp->device->create_flow) | |
1335 | return ERR_PTR(-ENOSYS); | |
1336 | ||
1337 | flow_id = qp->device->create_flow(qp, flow_attr, domain); | |
1338 | if (!IS_ERR(flow_id)) | |
1339 | atomic_inc(&qp->usecnt); | |
1340 | return flow_id; | |
1341 | } | |
1342 | EXPORT_SYMBOL(ib_create_flow); | |
1343 | ||
1344 | int ib_destroy_flow(struct ib_flow *flow_id) | |
1345 | { | |
1346 | int err; | |
1347 | struct ib_qp *qp = flow_id->qp; | |
1348 | ||
1349 | err = qp->device->destroy_flow(flow_id); | |
1350 | if (!err) | |
1351 | atomic_dec(&qp->usecnt); | |
1352 | return err; | |
1353 | } | |
1354 | EXPORT_SYMBOL(ib_destroy_flow); |