Commit | Line | Data |
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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> |
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 | |
ed4c54e5 | 49 | #include "core_priv.h" |
1da177e4 | 50 | |
bf6a9e31 JM |
51 | int ib_rate_to_mult(enum ib_rate rate) |
52 | { | |
53 | switch (rate) { | |
54 | case IB_RATE_2_5_GBPS: return 1; | |
55 | case IB_RATE_5_GBPS: return 2; | |
56 | case IB_RATE_10_GBPS: return 4; | |
57 | case IB_RATE_20_GBPS: return 8; | |
58 | case IB_RATE_30_GBPS: return 12; | |
59 | case IB_RATE_40_GBPS: return 16; | |
60 | case IB_RATE_60_GBPS: return 24; | |
61 | case IB_RATE_80_GBPS: return 32; | |
62 | case IB_RATE_120_GBPS: return 48; | |
63 | default: return -1; | |
64 | } | |
65 | } | |
66 | EXPORT_SYMBOL(ib_rate_to_mult); | |
67 | ||
68 | enum ib_rate mult_to_ib_rate(int mult) | |
69 | { | |
70 | switch (mult) { | |
71 | case 1: return IB_RATE_2_5_GBPS; | |
72 | case 2: return IB_RATE_5_GBPS; | |
73 | case 4: return IB_RATE_10_GBPS; | |
74 | case 8: return IB_RATE_20_GBPS; | |
75 | case 12: return IB_RATE_30_GBPS; | |
76 | case 16: return IB_RATE_40_GBPS; | |
77 | case 24: return IB_RATE_60_GBPS; | |
78 | case 32: return IB_RATE_80_GBPS; | |
79 | case 48: return IB_RATE_120_GBPS; | |
80 | default: return IB_RATE_PORT_CURRENT; | |
81 | } | |
82 | } | |
83 | EXPORT_SYMBOL(mult_to_ib_rate); | |
84 | ||
71eeba16 MA |
85 | int ib_rate_to_mbps(enum ib_rate rate) |
86 | { | |
87 | switch (rate) { | |
88 | case IB_RATE_2_5_GBPS: return 2500; | |
89 | case IB_RATE_5_GBPS: return 5000; | |
90 | case IB_RATE_10_GBPS: return 10000; | |
91 | case IB_RATE_20_GBPS: return 20000; | |
92 | case IB_RATE_30_GBPS: return 30000; | |
93 | case IB_RATE_40_GBPS: return 40000; | |
94 | case IB_RATE_60_GBPS: return 60000; | |
95 | case IB_RATE_80_GBPS: return 80000; | |
96 | case IB_RATE_120_GBPS: return 120000; | |
97 | case IB_RATE_14_GBPS: return 14062; | |
98 | case IB_RATE_56_GBPS: return 56250; | |
99 | case IB_RATE_112_GBPS: return 112500; | |
100 | case IB_RATE_168_GBPS: return 168750; | |
101 | case IB_RATE_25_GBPS: return 25781; | |
102 | case IB_RATE_100_GBPS: return 103125; | |
103 | case IB_RATE_200_GBPS: return 206250; | |
104 | case IB_RATE_300_GBPS: return 309375; | |
105 | default: return -1; | |
106 | } | |
107 | } | |
108 | EXPORT_SYMBOL(ib_rate_to_mbps); | |
109 | ||
07ebafba TT |
110 | enum rdma_transport_type |
111 | rdma_node_get_transport(enum rdma_node_type node_type) | |
112 | { | |
113 | switch (node_type) { | |
114 | case RDMA_NODE_IB_CA: | |
115 | case RDMA_NODE_IB_SWITCH: | |
116 | case RDMA_NODE_IB_ROUTER: | |
117 | return RDMA_TRANSPORT_IB; | |
118 | case RDMA_NODE_RNIC: | |
119 | return RDMA_TRANSPORT_IWARP; | |
180771a3 | 120 | case RDMA_NODE_USNIC: |
5db5765e UM |
121 | return RDMA_TRANSPORT_USNIC; |
122 | case RDMA_NODE_USNIC_UDP: | |
248567f7 | 123 | return RDMA_TRANSPORT_USNIC_UDP; |
07ebafba TT |
124 | default: |
125 | BUG(); | |
126 | return 0; | |
127 | } | |
128 | } | |
129 | EXPORT_SYMBOL(rdma_node_get_transport); | |
130 | ||
a3f5adaf EC |
131 | enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) |
132 | { | |
133 | if (device->get_link_layer) | |
134 | return device->get_link_layer(device, port_num); | |
135 | ||
136 | switch (rdma_node_get_transport(device->node_type)) { | |
137 | case RDMA_TRANSPORT_IB: | |
138 | return IB_LINK_LAYER_INFINIBAND; | |
139 | case RDMA_TRANSPORT_IWARP: | |
180771a3 | 140 | case RDMA_TRANSPORT_USNIC: |
248567f7 | 141 | case RDMA_TRANSPORT_USNIC_UDP: |
a3f5adaf EC |
142 | return IB_LINK_LAYER_ETHERNET; |
143 | default: | |
144 | return IB_LINK_LAYER_UNSPECIFIED; | |
145 | } | |
146 | } | |
147 | EXPORT_SYMBOL(rdma_port_get_link_layer); | |
148 | ||
1da177e4 LT |
149 | /* Protection domains */ |
150 | ||
151 | struct ib_pd *ib_alloc_pd(struct ib_device *device) | |
152 | { | |
153 | struct ib_pd *pd; | |
154 | ||
b5e81bf5 | 155 | pd = device->alloc_pd(device, NULL, NULL); |
1da177e4 LT |
156 | |
157 | if (!IS_ERR(pd)) { | |
b5e81bf5 RD |
158 | pd->device = device; |
159 | pd->uobject = NULL; | |
1da177e4 LT |
160 | atomic_set(&pd->usecnt, 0); |
161 | } | |
162 | ||
163 | return pd; | |
164 | } | |
165 | EXPORT_SYMBOL(ib_alloc_pd); | |
166 | ||
167 | int ib_dealloc_pd(struct ib_pd *pd) | |
168 | { | |
169 | if (atomic_read(&pd->usecnt)) | |
170 | return -EBUSY; | |
171 | ||
172 | return pd->device->dealloc_pd(pd); | |
173 | } | |
174 | EXPORT_SYMBOL(ib_dealloc_pd); | |
175 | ||
176 | /* Address handles */ | |
177 | ||
178 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
179 | { | |
180 | struct ib_ah *ah; | |
181 | ||
182 | ah = pd->device->create_ah(pd, ah_attr); | |
183 | ||
184 | if (!IS_ERR(ah)) { | |
b5e81bf5 RD |
185 | ah->device = pd->device; |
186 | ah->pd = pd; | |
187 | ah->uobject = NULL; | |
1da177e4 LT |
188 | atomic_inc(&pd->usecnt); |
189 | } | |
190 | ||
191 | return ah; | |
192 | } | |
193 | EXPORT_SYMBOL(ib_create_ah); | |
194 | ||
4e00d694 SH |
195 | int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, |
196 | struct ib_grh *grh, struct ib_ah_attr *ah_attr) | |
513789ed | 197 | { |
513789ed HR |
198 | u32 flow_class; |
199 | u16 gid_index; | |
200 | int ret; | |
dd5f03be MB |
201 | int is_eth = (rdma_port_get_link_layer(device, port_num) == |
202 | IB_LINK_LAYER_ETHERNET); | |
513789ed | 203 | |
4e00d694 | 204 | memset(ah_attr, 0, sizeof *ah_attr); |
dd5f03be MB |
205 | if (is_eth) { |
206 | if (!(wc->wc_flags & IB_WC_GRH)) | |
207 | return -EPROTOTYPE; | |
208 | ||
209 | if (wc->wc_flags & IB_WC_WITH_SMAC && | |
210 | wc->wc_flags & IB_WC_WITH_VLAN) { | |
211 | memcpy(ah_attr->dmac, wc->smac, ETH_ALEN); | |
212 | ah_attr->vlan_id = wc->vlan_id; | |
213 | } else { | |
214 | ret = rdma_addr_find_dmac_by_grh(&grh->dgid, &grh->sgid, | |
215 | ah_attr->dmac, &ah_attr->vlan_id); | |
216 | if (ret) | |
217 | return ret; | |
218 | } | |
219 | } else { | |
220 | ah_attr->vlan_id = 0xffff; | |
221 | } | |
222 | ||
4e00d694 SH |
223 | ah_attr->dlid = wc->slid; |
224 | ah_attr->sl = wc->sl; | |
225 | ah_attr->src_path_bits = wc->dlid_path_bits; | |
226 | ah_attr->port_num = port_num; | |
513789ed HR |
227 | |
228 | if (wc->wc_flags & IB_WC_GRH) { | |
4e00d694 SH |
229 | ah_attr->ah_flags = IB_AH_GRH; |
230 | ah_attr->grh.dgid = grh->sgid; | |
513789ed | 231 | |
4e00d694 | 232 | ret = ib_find_cached_gid(device, &grh->dgid, &port_num, |
513789ed HR |
233 | &gid_index); |
234 | if (ret) | |
4e00d694 | 235 | return ret; |
513789ed | 236 | |
4e00d694 | 237 | ah_attr->grh.sgid_index = (u8) gid_index; |
497677ab | 238 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
4e00d694 | 239 | ah_attr->grh.flow_label = flow_class & 0xFFFFF; |
47645d8d | 240 | ah_attr->grh.hop_limit = 0xFF; |
4e00d694 | 241 | ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF; |
513789ed | 242 | } |
4e00d694 SH |
243 | return 0; |
244 | } | |
245 | EXPORT_SYMBOL(ib_init_ah_from_wc); | |
246 | ||
247 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, | |
248 | struct ib_grh *grh, u8 port_num) | |
249 | { | |
250 | struct ib_ah_attr ah_attr; | |
251 | int ret; | |
252 | ||
253 | ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); | |
254 | if (ret) | |
255 | return ERR_PTR(ret); | |
513789ed HR |
256 | |
257 | return ib_create_ah(pd, &ah_attr); | |
258 | } | |
259 | EXPORT_SYMBOL(ib_create_ah_from_wc); | |
260 | ||
1da177e4 LT |
261 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
262 | { | |
263 | return ah->device->modify_ah ? | |
264 | ah->device->modify_ah(ah, ah_attr) : | |
265 | -ENOSYS; | |
266 | } | |
267 | EXPORT_SYMBOL(ib_modify_ah); | |
268 | ||
269 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) | |
270 | { | |
271 | return ah->device->query_ah ? | |
272 | ah->device->query_ah(ah, ah_attr) : | |
273 | -ENOSYS; | |
274 | } | |
275 | EXPORT_SYMBOL(ib_query_ah); | |
276 | ||
277 | int ib_destroy_ah(struct ib_ah *ah) | |
278 | { | |
279 | struct ib_pd *pd; | |
280 | int ret; | |
281 | ||
282 | pd = ah->pd; | |
283 | ret = ah->device->destroy_ah(ah); | |
284 | if (!ret) | |
285 | atomic_dec(&pd->usecnt); | |
286 | ||
287 | return ret; | |
288 | } | |
289 | EXPORT_SYMBOL(ib_destroy_ah); | |
290 | ||
d41fcc67 RD |
291 | /* Shared receive queues */ |
292 | ||
293 | struct ib_srq *ib_create_srq(struct ib_pd *pd, | |
294 | struct ib_srq_init_attr *srq_init_attr) | |
295 | { | |
296 | struct ib_srq *srq; | |
297 | ||
298 | if (!pd->device->create_srq) | |
299 | return ERR_PTR(-ENOSYS); | |
300 | ||
301 | srq = pd->device->create_srq(pd, srq_init_attr, NULL); | |
302 | ||
303 | if (!IS_ERR(srq)) { | |
304 | srq->device = pd->device; | |
305 | srq->pd = pd; | |
306 | srq->uobject = NULL; | |
307 | srq->event_handler = srq_init_attr->event_handler; | |
308 | srq->srq_context = srq_init_attr->srq_context; | |
96104eda | 309 | srq->srq_type = srq_init_attr->srq_type; |
418d5130 SH |
310 | if (srq->srq_type == IB_SRQT_XRC) { |
311 | srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; | |
312 | srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq; | |
313 | atomic_inc(&srq->ext.xrc.xrcd->usecnt); | |
314 | atomic_inc(&srq->ext.xrc.cq->usecnt); | |
315 | } | |
d41fcc67 RD |
316 | atomic_inc(&pd->usecnt); |
317 | atomic_set(&srq->usecnt, 0); | |
318 | } | |
319 | ||
320 | return srq; | |
321 | } | |
322 | EXPORT_SYMBOL(ib_create_srq); | |
323 | ||
324 | int ib_modify_srq(struct ib_srq *srq, | |
325 | struct ib_srq_attr *srq_attr, | |
326 | enum ib_srq_attr_mask srq_attr_mask) | |
327 | { | |
7ce5eacb DB |
328 | return srq->device->modify_srq ? |
329 | srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : | |
330 | -ENOSYS; | |
d41fcc67 RD |
331 | } |
332 | EXPORT_SYMBOL(ib_modify_srq); | |
333 | ||
334 | int ib_query_srq(struct ib_srq *srq, | |
335 | struct ib_srq_attr *srq_attr) | |
336 | { | |
337 | return srq->device->query_srq ? | |
338 | srq->device->query_srq(srq, srq_attr) : -ENOSYS; | |
339 | } | |
340 | EXPORT_SYMBOL(ib_query_srq); | |
341 | ||
342 | int ib_destroy_srq(struct ib_srq *srq) | |
343 | { | |
344 | struct ib_pd *pd; | |
418d5130 SH |
345 | enum ib_srq_type srq_type; |
346 | struct ib_xrcd *uninitialized_var(xrcd); | |
347 | struct ib_cq *uninitialized_var(cq); | |
d41fcc67 RD |
348 | int ret; |
349 | ||
350 | if (atomic_read(&srq->usecnt)) | |
351 | return -EBUSY; | |
352 | ||
353 | pd = srq->pd; | |
418d5130 SH |
354 | srq_type = srq->srq_type; |
355 | if (srq_type == IB_SRQT_XRC) { | |
356 | xrcd = srq->ext.xrc.xrcd; | |
357 | cq = srq->ext.xrc.cq; | |
358 | } | |
d41fcc67 RD |
359 | |
360 | ret = srq->device->destroy_srq(srq); | |
418d5130 | 361 | if (!ret) { |
d41fcc67 | 362 | atomic_dec(&pd->usecnt); |
418d5130 SH |
363 | if (srq_type == IB_SRQT_XRC) { |
364 | atomic_dec(&xrcd->usecnt); | |
365 | atomic_dec(&cq->usecnt); | |
366 | } | |
367 | } | |
d41fcc67 RD |
368 | |
369 | return ret; | |
370 | } | |
371 | EXPORT_SYMBOL(ib_destroy_srq); | |
372 | ||
1da177e4 LT |
373 | /* Queue pairs */ |
374 | ||
0e0ec7e0 SH |
375 | static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) |
376 | { | |
377 | struct ib_qp *qp = context; | |
73c40c61 | 378 | unsigned long flags; |
0e0ec7e0 | 379 | |
73c40c61 | 380 | spin_lock_irqsave(&qp->device->event_handler_lock, flags); |
0e0ec7e0 | 381 | list_for_each_entry(event->element.qp, &qp->open_list, open_list) |
eec9e29f SP |
382 | if (event->element.qp->event_handler) |
383 | event->element.qp->event_handler(event, event->element.qp->qp_context); | |
73c40c61 | 384 | spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); |
0e0ec7e0 SH |
385 | } |
386 | ||
d3d72d90 SH |
387 | static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) |
388 | { | |
389 | mutex_lock(&xrcd->tgt_qp_mutex); | |
390 | list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); | |
391 | mutex_unlock(&xrcd->tgt_qp_mutex); | |
392 | } | |
393 | ||
0e0ec7e0 SH |
394 | static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, |
395 | void (*event_handler)(struct ib_event *, void *), | |
396 | void *qp_context) | |
d3d72d90 | 397 | { |
0e0ec7e0 SH |
398 | struct ib_qp *qp; |
399 | unsigned long flags; | |
400 | ||
401 | qp = kzalloc(sizeof *qp, GFP_KERNEL); | |
402 | if (!qp) | |
403 | return ERR_PTR(-ENOMEM); | |
404 | ||
405 | qp->real_qp = real_qp; | |
406 | atomic_inc(&real_qp->usecnt); | |
407 | qp->device = real_qp->device; | |
408 | qp->event_handler = event_handler; | |
409 | qp->qp_context = qp_context; | |
410 | qp->qp_num = real_qp->qp_num; | |
411 | qp->qp_type = real_qp->qp_type; | |
412 | ||
413 | spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); | |
414 | list_add(&qp->open_list, &real_qp->open_list); | |
415 | spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); | |
416 | ||
417 | return qp; | |
418 | } | |
419 | ||
420 | struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, | |
421 | struct ib_qp_open_attr *qp_open_attr) | |
422 | { | |
423 | struct ib_qp *qp, *real_qp; | |
424 | ||
425 | if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) | |
426 | return ERR_PTR(-EINVAL); | |
427 | ||
428 | qp = ERR_PTR(-EINVAL); | |
d3d72d90 | 429 | mutex_lock(&xrcd->tgt_qp_mutex); |
0e0ec7e0 SH |
430 | list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { |
431 | if (real_qp->qp_num == qp_open_attr->qp_num) { | |
432 | qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, | |
433 | qp_open_attr->qp_context); | |
434 | break; | |
435 | } | |
436 | } | |
d3d72d90 | 437 | mutex_unlock(&xrcd->tgt_qp_mutex); |
0e0ec7e0 | 438 | return qp; |
d3d72d90 | 439 | } |
0e0ec7e0 | 440 | EXPORT_SYMBOL(ib_open_qp); |
d3d72d90 | 441 | |
1da177e4 LT |
442 | struct ib_qp *ib_create_qp(struct ib_pd *pd, |
443 | struct ib_qp_init_attr *qp_init_attr) | |
444 | { | |
0e0ec7e0 | 445 | struct ib_qp *qp, *real_qp; |
b42b63cf | 446 | struct ib_device *device; |
1da177e4 | 447 | |
b42b63cf SH |
448 | device = pd ? pd->device : qp_init_attr->xrcd->device; |
449 | qp = device->create_qp(pd, qp_init_attr, NULL); | |
1da177e4 LT |
450 | |
451 | if (!IS_ERR(qp)) { | |
0e0ec7e0 SH |
452 | qp->device = device; |
453 | qp->real_qp = qp; | |
454 | qp->uobject = NULL; | |
455 | qp->qp_type = qp_init_attr->qp_type; | |
b42b63cf | 456 | |
e47e321a | 457 | atomic_set(&qp->usecnt, 0); |
b42b63cf | 458 | if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { |
0e0ec7e0 SH |
459 | qp->event_handler = __ib_shared_qp_event_handler; |
460 | qp->qp_context = qp; | |
b42b63cf SH |
461 | qp->pd = NULL; |
462 | qp->send_cq = qp->recv_cq = NULL; | |
463 | qp->srq = NULL; | |
464 | qp->xrcd = qp_init_attr->xrcd; | |
465 | atomic_inc(&qp_init_attr->xrcd->usecnt); | |
0e0ec7e0 | 466 | INIT_LIST_HEAD(&qp->open_list); |
0e0ec7e0 SH |
467 | |
468 | real_qp = qp; | |
469 | qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, | |
470 | qp_init_attr->qp_context); | |
471 | if (!IS_ERR(qp)) | |
472 | __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); | |
473 | else | |
474 | real_qp->device->destroy_qp(real_qp); | |
b42b63cf | 475 | } else { |
0e0ec7e0 SH |
476 | qp->event_handler = qp_init_attr->event_handler; |
477 | qp->qp_context = qp_init_attr->qp_context; | |
b42b63cf SH |
478 | if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { |
479 | qp->recv_cq = NULL; | |
480 | qp->srq = NULL; | |
481 | } else { | |
482 | qp->recv_cq = qp_init_attr->recv_cq; | |
483 | atomic_inc(&qp_init_attr->recv_cq->usecnt); | |
484 | qp->srq = qp_init_attr->srq; | |
485 | if (qp->srq) | |
486 | atomic_inc(&qp_init_attr->srq->usecnt); | |
487 | } | |
488 | ||
489 | qp->pd = pd; | |
490 | qp->send_cq = qp_init_attr->send_cq; | |
491 | qp->xrcd = NULL; | |
492 | ||
493 | atomic_inc(&pd->usecnt); | |
494 | atomic_inc(&qp_init_attr->send_cq->usecnt); | |
495 | } | |
1da177e4 LT |
496 | } |
497 | ||
498 | return qp; | |
499 | } | |
500 | EXPORT_SYMBOL(ib_create_qp); | |
501 | ||
8a51866f RD |
502 | static const struct { |
503 | int valid; | |
b42b63cf | 504 | enum ib_qp_attr_mask req_param[IB_QPT_MAX]; |
dd5f03be | 505 | enum ib_qp_attr_mask req_param_add_eth[IB_QPT_MAX]; |
b42b63cf | 506 | enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; |
dd5f03be | 507 | enum ib_qp_attr_mask opt_param_add_eth[IB_QPT_MAX]; |
8a51866f RD |
508 | } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { |
509 | [IB_QPS_RESET] = { | |
510 | [IB_QPS_RESET] = { .valid = 1 }, | |
8a51866f RD |
511 | [IB_QPS_INIT] = { |
512 | .valid = 1, | |
513 | .req_param = { | |
514 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
515 | IB_QP_PORT | | |
516 | IB_QP_QKEY), | |
c938a616 | 517 | [IB_QPT_RAW_PACKET] = IB_QP_PORT, |
8a51866f RD |
518 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | |
519 | IB_QP_PORT | | |
520 | IB_QP_ACCESS_FLAGS), | |
521 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
522 | IB_QP_PORT | | |
523 | IB_QP_ACCESS_FLAGS), | |
b42b63cf SH |
524 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
525 | IB_QP_PORT | | |
526 | IB_QP_ACCESS_FLAGS), | |
527 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | | |
528 | IB_QP_PORT | | |
529 | IB_QP_ACCESS_FLAGS), | |
8a51866f RD |
530 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
531 | IB_QP_QKEY), | |
532 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
533 | IB_QP_QKEY), | |
534 | } | |
535 | }, | |
536 | }, | |
537 | [IB_QPS_INIT] = { | |
538 | [IB_QPS_RESET] = { .valid = 1 }, | |
539 | [IB_QPS_ERR] = { .valid = 1 }, | |
540 | [IB_QPS_INIT] = { | |
541 | .valid = 1, | |
542 | .opt_param = { | |
543 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
544 | IB_QP_PORT | | |
545 | IB_QP_QKEY), | |
546 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
547 | IB_QP_PORT | | |
548 | IB_QP_ACCESS_FLAGS), | |
549 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
550 | IB_QP_PORT | | |
551 | IB_QP_ACCESS_FLAGS), | |
b42b63cf SH |
552 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
553 | IB_QP_PORT | | |
554 | IB_QP_ACCESS_FLAGS), | |
555 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | | |
556 | IB_QP_PORT | | |
557 | IB_QP_ACCESS_FLAGS), | |
8a51866f RD |
558 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
559 | IB_QP_QKEY), | |
560 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
561 | IB_QP_QKEY), | |
562 | } | |
563 | }, | |
564 | [IB_QPS_RTR] = { | |
565 | .valid = 1, | |
566 | .req_param = { | |
567 | [IB_QPT_UC] = (IB_QP_AV | | |
568 | IB_QP_PATH_MTU | | |
569 | IB_QP_DEST_QPN | | |
570 | IB_QP_RQ_PSN), | |
571 | [IB_QPT_RC] = (IB_QP_AV | | |
572 | IB_QP_PATH_MTU | | |
573 | IB_QP_DEST_QPN | | |
574 | IB_QP_RQ_PSN | | |
575 | IB_QP_MAX_DEST_RD_ATOMIC | | |
576 | IB_QP_MIN_RNR_TIMER), | |
b42b63cf SH |
577 | [IB_QPT_XRC_INI] = (IB_QP_AV | |
578 | IB_QP_PATH_MTU | | |
579 | IB_QP_DEST_QPN | | |
580 | IB_QP_RQ_PSN), | |
581 | [IB_QPT_XRC_TGT] = (IB_QP_AV | | |
582 | IB_QP_PATH_MTU | | |
583 | IB_QP_DEST_QPN | | |
584 | IB_QP_RQ_PSN | | |
585 | IB_QP_MAX_DEST_RD_ATOMIC | | |
586 | IB_QP_MIN_RNR_TIMER), | |
8a51866f | 587 | }, |
dd5f03be MB |
588 | .req_param_add_eth = { |
589 | [IB_QPT_RC] = (IB_QP_SMAC), | |
590 | [IB_QPT_UC] = (IB_QP_SMAC), | |
591 | [IB_QPT_XRC_INI] = (IB_QP_SMAC), | |
592 | [IB_QPT_XRC_TGT] = (IB_QP_SMAC) | |
593 | }, | |
8a51866f RD |
594 | .opt_param = { |
595 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
596 | IB_QP_QKEY), | |
597 | [IB_QPT_UC] = (IB_QP_ALT_PATH | | |
598 | IB_QP_ACCESS_FLAGS | | |
599 | IB_QP_PKEY_INDEX), | |
600 | [IB_QPT_RC] = (IB_QP_ALT_PATH | | |
601 | IB_QP_ACCESS_FLAGS | | |
602 | IB_QP_PKEY_INDEX), | |
b42b63cf SH |
603 | [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | |
604 | IB_QP_ACCESS_FLAGS | | |
605 | IB_QP_PKEY_INDEX), | |
606 | [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | | |
607 | IB_QP_ACCESS_FLAGS | | |
608 | IB_QP_PKEY_INDEX), | |
8a51866f RD |
609 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
610 | IB_QP_QKEY), | |
611 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
612 | IB_QP_QKEY), | |
dd5f03be MB |
613 | }, |
614 | .opt_param_add_eth = { | |
615 | [IB_QPT_RC] = (IB_QP_ALT_SMAC | | |
616 | IB_QP_VID | | |
617 | IB_QP_ALT_VID), | |
618 | [IB_QPT_UC] = (IB_QP_ALT_SMAC | | |
619 | IB_QP_VID | | |
620 | IB_QP_ALT_VID), | |
621 | [IB_QPT_XRC_INI] = (IB_QP_ALT_SMAC | | |
622 | IB_QP_VID | | |
623 | IB_QP_ALT_VID), | |
624 | [IB_QPT_XRC_TGT] = (IB_QP_ALT_SMAC | | |
625 | IB_QP_VID | | |
626 | IB_QP_ALT_VID) | |
627 | } | |
8a51866f RD |
628 | } |
629 | }, | |
630 | [IB_QPS_RTR] = { | |
631 | [IB_QPS_RESET] = { .valid = 1 }, | |
632 | [IB_QPS_ERR] = { .valid = 1 }, | |
633 | [IB_QPS_RTS] = { | |
634 | .valid = 1, | |
635 | .req_param = { | |
636 | [IB_QPT_UD] = IB_QP_SQ_PSN, | |
637 | [IB_QPT_UC] = IB_QP_SQ_PSN, | |
638 | [IB_QPT_RC] = (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), | |
b42b63cf SH |
643 | [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | |
644 | IB_QP_RETRY_CNT | | |
645 | IB_QP_RNR_RETRY | | |
646 | IB_QP_SQ_PSN | | |
647 | IB_QP_MAX_QP_RD_ATOMIC), | |
648 | [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | | |
649 | IB_QP_SQ_PSN), | |
8a51866f RD |
650 | [IB_QPT_SMI] = IB_QP_SQ_PSN, |
651 | [IB_QPT_GSI] = IB_QP_SQ_PSN, | |
652 | }, | |
653 | .opt_param = { | |
654 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
655 | IB_QP_QKEY), | |
656 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
657 | IB_QP_ALT_PATH | | |
658 | IB_QP_ACCESS_FLAGS | | |
659 | IB_QP_PATH_MIG_STATE), | |
660 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
661 | IB_QP_ALT_PATH | | |
662 | IB_QP_ACCESS_FLAGS | | |
663 | IB_QP_MIN_RNR_TIMER | | |
664 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
665 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
666 | IB_QP_ALT_PATH | | |
667 | IB_QP_ACCESS_FLAGS | | |
668 | IB_QP_PATH_MIG_STATE), | |
669 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
670 | IB_QP_ALT_PATH | | |
671 | IB_QP_ACCESS_FLAGS | | |
672 | IB_QP_MIN_RNR_TIMER | | |
673 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
674 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
675 | IB_QP_QKEY), | |
676 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
677 | IB_QP_QKEY), | |
678 | } | |
679 | } | |
680 | }, | |
681 | [IB_QPS_RTS] = { | |
682 | [IB_QPS_RESET] = { .valid = 1 }, | |
683 | [IB_QPS_ERR] = { .valid = 1 }, | |
684 | [IB_QPS_RTS] = { | |
685 | .valid = 1, | |
686 | .opt_param = { | |
687 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
688 | IB_QP_QKEY), | |
4546d31d DB |
689 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
690 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
691 | IB_QP_ALT_PATH | |
692 | IB_QP_PATH_MIG_STATE), | |
4546d31d DB |
693 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
694 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
695 | IB_QP_ALT_PATH | |
696 | IB_QP_PATH_MIG_STATE | | |
697 | IB_QP_MIN_RNR_TIMER), | |
b42b63cf SH |
698 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
699 | IB_QP_ACCESS_FLAGS | | |
700 | IB_QP_ALT_PATH | | |
701 | IB_QP_PATH_MIG_STATE), | |
702 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
703 | IB_QP_ACCESS_FLAGS | | |
704 | IB_QP_ALT_PATH | | |
705 | IB_QP_PATH_MIG_STATE | | |
706 | IB_QP_MIN_RNR_TIMER), | |
8a51866f RD |
707 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
708 | IB_QP_QKEY), | |
709 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
710 | IB_QP_QKEY), | |
711 | } | |
712 | }, | |
713 | [IB_QPS_SQD] = { | |
714 | .valid = 1, | |
715 | .opt_param = { | |
716 | [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
717 | [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
718 | [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
b42b63cf SH |
719 | [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
720 | [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ | |
8a51866f RD |
721 | [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
722 | [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY | |
723 | } | |
724 | }, | |
725 | }, | |
726 | [IB_QPS_SQD] = { | |
727 | [IB_QPS_RESET] = { .valid = 1 }, | |
728 | [IB_QPS_ERR] = { .valid = 1 }, | |
729 | [IB_QPS_RTS] = { | |
730 | .valid = 1, | |
731 | .opt_param = { | |
732 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
733 | IB_QP_QKEY), | |
734 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
735 | IB_QP_ALT_PATH | | |
736 | IB_QP_ACCESS_FLAGS | | |
737 | IB_QP_PATH_MIG_STATE), | |
738 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
739 | IB_QP_ALT_PATH | | |
740 | IB_QP_ACCESS_FLAGS | | |
741 | IB_QP_MIN_RNR_TIMER | | |
742 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
743 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
744 | IB_QP_ALT_PATH | | |
745 | IB_QP_ACCESS_FLAGS | | |
746 | IB_QP_PATH_MIG_STATE), | |
747 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
748 | IB_QP_ALT_PATH | | |
749 | IB_QP_ACCESS_FLAGS | | |
750 | IB_QP_MIN_RNR_TIMER | | |
751 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
752 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
753 | IB_QP_QKEY), | |
754 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
755 | IB_QP_QKEY), | |
756 | } | |
757 | }, | |
758 | [IB_QPS_SQD] = { | |
759 | .valid = 1, | |
760 | .opt_param = { | |
761 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
762 | IB_QP_QKEY), | |
763 | [IB_QPT_UC] = (IB_QP_AV | | |
8a51866f RD |
764 | IB_QP_ALT_PATH | |
765 | IB_QP_ACCESS_FLAGS | | |
766 | IB_QP_PKEY_INDEX | | |
767 | IB_QP_PATH_MIG_STATE), | |
768 | [IB_QPT_RC] = (IB_QP_PORT | | |
769 | IB_QP_AV | | |
770 | IB_QP_TIMEOUT | | |
771 | IB_QP_RETRY_CNT | | |
772 | IB_QP_RNR_RETRY | | |
773 | IB_QP_MAX_QP_RD_ATOMIC | | |
774 | IB_QP_MAX_DEST_RD_ATOMIC | | |
8a51866f RD |
775 | IB_QP_ALT_PATH | |
776 | IB_QP_ACCESS_FLAGS | | |
777 | IB_QP_PKEY_INDEX | | |
778 | IB_QP_MIN_RNR_TIMER | | |
779 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
780 | [IB_QPT_XRC_INI] = (IB_QP_PORT | |
781 | IB_QP_AV | | |
782 | IB_QP_TIMEOUT | | |
783 | IB_QP_RETRY_CNT | | |
784 | IB_QP_RNR_RETRY | | |
785 | IB_QP_MAX_QP_RD_ATOMIC | | |
786 | IB_QP_ALT_PATH | | |
787 | IB_QP_ACCESS_FLAGS | | |
788 | IB_QP_PKEY_INDEX | | |
789 | IB_QP_PATH_MIG_STATE), | |
790 | [IB_QPT_XRC_TGT] = (IB_QP_PORT | | |
791 | IB_QP_AV | | |
792 | IB_QP_TIMEOUT | | |
793 | IB_QP_MAX_DEST_RD_ATOMIC | | |
794 | IB_QP_ALT_PATH | | |
795 | IB_QP_ACCESS_FLAGS | | |
796 | IB_QP_PKEY_INDEX | | |
797 | IB_QP_MIN_RNR_TIMER | | |
798 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
799 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
800 | IB_QP_QKEY), | |
801 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
802 | IB_QP_QKEY), | |
803 | } | |
804 | } | |
805 | }, | |
806 | [IB_QPS_SQE] = { | |
807 | [IB_QPS_RESET] = { .valid = 1 }, | |
808 | [IB_QPS_ERR] = { .valid = 1 }, | |
809 | [IB_QPS_RTS] = { | |
810 | .valid = 1, | |
811 | .opt_param = { | |
812 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
813 | IB_QP_QKEY), | |
814 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
815 | IB_QP_ACCESS_FLAGS), | |
816 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
817 | IB_QP_QKEY), | |
818 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
819 | IB_QP_QKEY), | |
820 | } | |
821 | } | |
822 | }, | |
823 | [IB_QPS_ERR] = { | |
824 | [IB_QPS_RESET] = { .valid = 1 }, | |
825 | [IB_QPS_ERR] = { .valid = 1 } | |
826 | } | |
827 | }; | |
828 | ||
829 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, | |
dd5f03be MB |
830 | enum ib_qp_type type, enum ib_qp_attr_mask mask, |
831 | enum rdma_link_layer ll) | |
8a51866f RD |
832 | { |
833 | enum ib_qp_attr_mask req_param, opt_param; | |
834 | ||
835 | if (cur_state < 0 || cur_state > IB_QPS_ERR || | |
836 | next_state < 0 || next_state > IB_QPS_ERR) | |
837 | return 0; | |
838 | ||
839 | if (mask & IB_QP_CUR_STATE && | |
840 | cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && | |
841 | cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) | |
842 | return 0; | |
843 | ||
844 | if (!qp_state_table[cur_state][next_state].valid) | |
845 | return 0; | |
846 | ||
847 | req_param = qp_state_table[cur_state][next_state].req_param[type]; | |
848 | opt_param = qp_state_table[cur_state][next_state].opt_param[type]; | |
849 | ||
dd5f03be MB |
850 | if (ll == IB_LINK_LAYER_ETHERNET) { |
851 | req_param |= qp_state_table[cur_state][next_state]. | |
852 | req_param_add_eth[type]; | |
853 | opt_param |= qp_state_table[cur_state][next_state]. | |
854 | opt_param_add_eth[type]; | |
855 | } | |
856 | ||
8a51866f RD |
857 | if ((mask & req_param) != req_param) |
858 | return 0; | |
859 | ||
860 | if (mask & ~(req_param | opt_param | IB_QP_STATE)) | |
861 | return 0; | |
862 | ||
863 | return 1; | |
864 | } | |
865 | EXPORT_SYMBOL(ib_modify_qp_is_ok); | |
866 | ||
ed4c54e5 OG |
867 | int ib_resolve_eth_l2_attrs(struct ib_qp *qp, |
868 | struct ib_qp_attr *qp_attr, int *qp_attr_mask) | |
869 | { | |
870 | int ret = 0; | |
871 | union ib_gid sgid; | |
872 | ||
873 | if ((*qp_attr_mask & IB_QP_AV) && | |
874 | (rdma_port_get_link_layer(qp->device, qp_attr->ah_attr.port_num) == IB_LINK_LAYER_ETHERNET)) { | |
875 | ret = ib_query_gid(qp->device, qp_attr->ah_attr.port_num, | |
876 | qp_attr->ah_attr.grh.sgid_index, &sgid); | |
877 | if (ret) | |
878 | goto out; | |
879 | if (rdma_link_local_addr((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw)) { | |
880 | rdma_get_ll_mac((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw, qp_attr->ah_attr.dmac); | |
881 | rdma_get_ll_mac((struct in6_addr *)sgid.raw, qp_attr->smac); | |
882 | qp_attr->vlan_id = rdma_get_vlan_id(&sgid); | |
883 | } else { | |
884 | ret = rdma_addr_find_dmac_by_grh(&sgid, &qp_attr->ah_attr.grh.dgid, | |
885 | qp_attr->ah_attr.dmac, &qp_attr->vlan_id); | |
886 | if (ret) | |
887 | goto out; | |
888 | ret = rdma_addr_find_smac_by_sgid(&sgid, qp_attr->smac, NULL); | |
889 | if (ret) | |
890 | goto out; | |
891 | } | |
892 | *qp_attr_mask |= IB_QP_SMAC; | |
893 | if (qp_attr->vlan_id < 0xFFFF) | |
894 | *qp_attr_mask |= IB_QP_VID; | |
895 | } | |
896 | out: | |
897 | return ret; | |
898 | } | |
899 | EXPORT_SYMBOL(ib_resolve_eth_l2_attrs); | |
900 | ||
901 | ||
1da177e4 LT |
902 | int ib_modify_qp(struct ib_qp *qp, |
903 | struct ib_qp_attr *qp_attr, | |
904 | int qp_attr_mask) | |
905 | { | |
ed4c54e5 OG |
906 | int ret; |
907 | ||
908 | ret = ib_resolve_eth_l2_attrs(qp, qp_attr, &qp_attr_mask); | |
909 | if (ret) | |
910 | return ret; | |
911 | ||
0e0ec7e0 | 912 | return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); |
1da177e4 LT |
913 | } |
914 | EXPORT_SYMBOL(ib_modify_qp); | |
915 | ||
916 | int ib_query_qp(struct ib_qp *qp, | |
917 | struct ib_qp_attr *qp_attr, | |
918 | int qp_attr_mask, | |
919 | struct ib_qp_init_attr *qp_init_attr) | |
920 | { | |
921 | return qp->device->query_qp ? | |
0e0ec7e0 | 922 | qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) : |
1da177e4 LT |
923 | -ENOSYS; |
924 | } | |
925 | EXPORT_SYMBOL(ib_query_qp); | |
926 | ||
0e0ec7e0 SH |
927 | int ib_close_qp(struct ib_qp *qp) |
928 | { | |
929 | struct ib_qp *real_qp; | |
930 | unsigned long flags; | |
931 | ||
932 | real_qp = qp->real_qp; | |
933 | if (real_qp == qp) | |
934 | return -EINVAL; | |
935 | ||
936 | spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); | |
937 | list_del(&qp->open_list); | |
938 | spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); | |
939 | ||
940 | atomic_dec(&real_qp->usecnt); | |
941 | kfree(qp); | |
942 | ||
943 | return 0; | |
944 | } | |
945 | EXPORT_SYMBOL(ib_close_qp); | |
946 | ||
947 | static int __ib_destroy_shared_qp(struct ib_qp *qp) | |
948 | { | |
949 | struct ib_xrcd *xrcd; | |
950 | struct ib_qp *real_qp; | |
951 | int ret; | |
952 | ||
953 | real_qp = qp->real_qp; | |
954 | xrcd = real_qp->xrcd; | |
955 | ||
956 | mutex_lock(&xrcd->tgt_qp_mutex); | |
957 | ib_close_qp(qp); | |
958 | if (atomic_read(&real_qp->usecnt) == 0) | |
959 | list_del(&real_qp->xrcd_list); | |
960 | else | |
961 | real_qp = NULL; | |
962 | mutex_unlock(&xrcd->tgt_qp_mutex); | |
963 | ||
964 | if (real_qp) { | |
965 | ret = ib_destroy_qp(real_qp); | |
966 | if (!ret) | |
967 | atomic_dec(&xrcd->usecnt); | |
968 | else | |
969 | __ib_insert_xrcd_qp(xrcd, real_qp); | |
970 | } | |
971 | ||
972 | return 0; | |
973 | } | |
974 | ||
1da177e4 LT |
975 | int ib_destroy_qp(struct ib_qp *qp) |
976 | { | |
977 | struct ib_pd *pd; | |
978 | struct ib_cq *scq, *rcq; | |
979 | struct ib_srq *srq; | |
980 | int ret; | |
981 | ||
0e0ec7e0 SH |
982 | if (atomic_read(&qp->usecnt)) |
983 | return -EBUSY; | |
984 | ||
985 | if (qp->real_qp != qp) | |
986 | return __ib_destroy_shared_qp(qp); | |
987 | ||
b42b63cf SH |
988 | pd = qp->pd; |
989 | scq = qp->send_cq; | |
990 | rcq = qp->recv_cq; | |
991 | srq = qp->srq; | |
1da177e4 LT |
992 | |
993 | ret = qp->device->destroy_qp(qp); | |
994 | if (!ret) { | |
b42b63cf SH |
995 | if (pd) |
996 | atomic_dec(&pd->usecnt); | |
997 | if (scq) | |
998 | atomic_dec(&scq->usecnt); | |
999 | if (rcq) | |
1000 | atomic_dec(&rcq->usecnt); | |
1da177e4 LT |
1001 | if (srq) |
1002 | atomic_dec(&srq->usecnt); | |
1003 | } | |
1004 | ||
1005 | return ret; | |
1006 | } | |
1007 | EXPORT_SYMBOL(ib_destroy_qp); | |
1008 | ||
1009 | /* Completion queues */ | |
1010 | ||
1011 | struct ib_cq *ib_create_cq(struct ib_device *device, | |
1012 | ib_comp_handler comp_handler, | |
1013 | void (*event_handler)(struct ib_event *, void *), | |
f4fd0b22 | 1014 | void *cq_context, int cqe, int comp_vector) |
1da177e4 LT |
1015 | { |
1016 | struct ib_cq *cq; | |
1017 | ||
f4fd0b22 | 1018 | cq = device->create_cq(device, cqe, comp_vector, NULL, NULL); |
1da177e4 LT |
1019 | |
1020 | if (!IS_ERR(cq)) { | |
1021 | cq->device = device; | |
b5e81bf5 | 1022 | cq->uobject = NULL; |
1da177e4 LT |
1023 | cq->comp_handler = comp_handler; |
1024 | cq->event_handler = event_handler; | |
1025 | cq->cq_context = cq_context; | |
1026 | atomic_set(&cq->usecnt, 0); | |
1027 | } | |
1028 | ||
1029 | return cq; | |
1030 | } | |
1031 | EXPORT_SYMBOL(ib_create_cq); | |
1032 | ||
2dd57162 EC |
1033 | int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) |
1034 | { | |
1035 | return cq->device->modify_cq ? | |
1036 | cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS; | |
1037 | } | |
1038 | EXPORT_SYMBOL(ib_modify_cq); | |
1039 | ||
1da177e4 LT |
1040 | int ib_destroy_cq(struct ib_cq *cq) |
1041 | { | |
1042 | if (atomic_read(&cq->usecnt)) | |
1043 | return -EBUSY; | |
1044 | ||
1045 | return cq->device->destroy_cq(cq); | |
1046 | } | |
1047 | EXPORT_SYMBOL(ib_destroy_cq); | |
1048 | ||
a74cd4af | 1049 | int ib_resize_cq(struct ib_cq *cq, int cqe) |
1da177e4 | 1050 | { |
40de2e54 | 1051 | return cq->device->resize_cq ? |
33b9b3ee | 1052 | cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; |
1da177e4 LT |
1053 | } |
1054 | EXPORT_SYMBOL(ib_resize_cq); | |
1055 | ||
1056 | /* Memory regions */ | |
1057 | ||
1058 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) | |
1059 | { | |
1060 | struct ib_mr *mr; | |
1c636f80 EC |
1061 | int err; |
1062 | ||
1063 | err = ib_check_mr_access(mr_access_flags); | |
1064 | if (err) | |
1065 | return ERR_PTR(err); | |
1da177e4 LT |
1066 | |
1067 | mr = pd->device->get_dma_mr(pd, mr_access_flags); | |
1068 | ||
1069 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
1070 | mr->device = pd->device; |
1071 | mr->pd = pd; | |
1072 | mr->uobject = NULL; | |
1da177e4 LT |
1073 | atomic_inc(&pd->usecnt); |
1074 | atomic_set(&mr->usecnt, 0); | |
1075 | } | |
1076 | ||
1077 | return mr; | |
1078 | } | |
1079 | EXPORT_SYMBOL(ib_get_dma_mr); | |
1080 | ||
1081 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, | |
1082 | struct ib_phys_buf *phys_buf_array, | |
1083 | int num_phys_buf, | |
1084 | int mr_access_flags, | |
1085 | u64 *iova_start) | |
1086 | { | |
1087 | struct ib_mr *mr; | |
1c636f80 EC |
1088 | int err; |
1089 | ||
1090 | err = ib_check_mr_access(mr_access_flags); | |
1091 | if (err) | |
1092 | return ERR_PTR(err); | |
1da177e4 | 1093 | |
7ce5eacb DB |
1094 | if (!pd->device->reg_phys_mr) |
1095 | return ERR_PTR(-ENOSYS); | |
1096 | ||
1da177e4 LT |
1097 | mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, |
1098 | mr_access_flags, iova_start); | |
1099 | ||
1100 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
1101 | mr->device = pd->device; |
1102 | mr->pd = pd; | |
1103 | mr->uobject = NULL; | |
1da177e4 LT |
1104 | atomic_inc(&pd->usecnt); |
1105 | atomic_set(&mr->usecnt, 0); | |
1106 | } | |
1107 | ||
1108 | return mr; | |
1109 | } | |
1110 | EXPORT_SYMBOL(ib_reg_phys_mr); | |
1111 | ||
1112 | int ib_rereg_phys_mr(struct ib_mr *mr, | |
1113 | int mr_rereg_mask, | |
1114 | struct ib_pd *pd, | |
1115 | struct ib_phys_buf *phys_buf_array, | |
1116 | int num_phys_buf, | |
1117 | int mr_access_flags, | |
1118 | u64 *iova_start) | |
1119 | { | |
1120 | struct ib_pd *old_pd; | |
1121 | int ret; | |
1122 | ||
1c636f80 EC |
1123 | ret = ib_check_mr_access(mr_access_flags); |
1124 | if (ret) | |
1125 | return ret; | |
1126 | ||
1da177e4 LT |
1127 | if (!mr->device->rereg_phys_mr) |
1128 | return -ENOSYS; | |
1129 | ||
1130 | if (atomic_read(&mr->usecnt)) | |
1131 | return -EBUSY; | |
1132 | ||
1133 | old_pd = mr->pd; | |
1134 | ||
1135 | ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, | |
1136 | phys_buf_array, num_phys_buf, | |
1137 | mr_access_flags, iova_start); | |
1138 | ||
1139 | if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { | |
1140 | atomic_dec(&old_pd->usecnt); | |
1141 | atomic_inc(&pd->usecnt); | |
1142 | } | |
1143 | ||
1144 | return ret; | |
1145 | } | |
1146 | EXPORT_SYMBOL(ib_rereg_phys_mr); | |
1147 | ||
1148 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) | |
1149 | { | |
1150 | return mr->device->query_mr ? | |
1151 | mr->device->query_mr(mr, mr_attr) : -ENOSYS; | |
1152 | } | |
1153 | EXPORT_SYMBOL(ib_query_mr); | |
1154 | ||
1155 | int ib_dereg_mr(struct ib_mr *mr) | |
1156 | { | |
1157 | struct ib_pd *pd; | |
1158 | int ret; | |
1159 | ||
1160 | if (atomic_read(&mr->usecnt)) | |
1161 | return -EBUSY; | |
1162 | ||
1163 | pd = mr->pd; | |
1164 | ret = mr->device->dereg_mr(mr); | |
1165 | if (!ret) | |
1166 | atomic_dec(&pd->usecnt); | |
1167 | ||
1168 | return ret; | |
1169 | } | |
1170 | EXPORT_SYMBOL(ib_dereg_mr); | |
1171 | ||
00f7ec36 SW |
1172 | struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len) |
1173 | { | |
1174 | struct ib_mr *mr; | |
1175 | ||
1176 | if (!pd->device->alloc_fast_reg_mr) | |
1177 | return ERR_PTR(-ENOSYS); | |
1178 | ||
1179 | mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len); | |
1180 | ||
1181 | if (!IS_ERR(mr)) { | |
1182 | mr->device = pd->device; | |
1183 | mr->pd = pd; | |
1184 | mr->uobject = NULL; | |
1185 | atomic_inc(&pd->usecnt); | |
1186 | atomic_set(&mr->usecnt, 0); | |
1187 | } | |
1188 | ||
1189 | return mr; | |
1190 | } | |
1191 | EXPORT_SYMBOL(ib_alloc_fast_reg_mr); | |
1192 | ||
1193 | struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device, | |
1194 | int max_page_list_len) | |
1195 | { | |
1196 | struct ib_fast_reg_page_list *page_list; | |
1197 | ||
1198 | if (!device->alloc_fast_reg_page_list) | |
1199 | return ERR_PTR(-ENOSYS); | |
1200 | ||
1201 | page_list = device->alloc_fast_reg_page_list(device, max_page_list_len); | |
1202 | ||
1203 | if (!IS_ERR(page_list)) { | |
1204 | page_list->device = device; | |
1205 | page_list->max_page_list_len = max_page_list_len; | |
1206 | } | |
1207 | ||
1208 | return page_list; | |
1209 | } | |
1210 | EXPORT_SYMBOL(ib_alloc_fast_reg_page_list); | |
1211 | ||
1212 | void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list) | |
1213 | { | |
1214 | page_list->device->free_fast_reg_page_list(page_list); | |
1215 | } | |
1216 | EXPORT_SYMBOL(ib_free_fast_reg_page_list); | |
1217 | ||
1da177e4 LT |
1218 | /* Memory windows */ |
1219 | ||
7083e42e | 1220 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type) |
1da177e4 LT |
1221 | { |
1222 | struct ib_mw *mw; | |
1223 | ||
1224 | if (!pd->device->alloc_mw) | |
1225 | return ERR_PTR(-ENOSYS); | |
1226 | ||
7083e42e | 1227 | mw = pd->device->alloc_mw(pd, type); |
1da177e4 | 1228 | if (!IS_ERR(mw)) { |
b5e81bf5 RD |
1229 | mw->device = pd->device; |
1230 | mw->pd = pd; | |
1231 | mw->uobject = NULL; | |
7083e42e | 1232 | mw->type = type; |
1da177e4 LT |
1233 | atomic_inc(&pd->usecnt); |
1234 | } | |
1235 | ||
1236 | return mw; | |
1237 | } | |
1238 | EXPORT_SYMBOL(ib_alloc_mw); | |
1239 | ||
1240 | int ib_dealloc_mw(struct ib_mw *mw) | |
1241 | { | |
1242 | struct ib_pd *pd; | |
1243 | int ret; | |
1244 | ||
1245 | pd = mw->pd; | |
1246 | ret = mw->device->dealloc_mw(mw); | |
1247 | if (!ret) | |
1248 | atomic_dec(&pd->usecnt); | |
1249 | ||
1250 | return ret; | |
1251 | } | |
1252 | EXPORT_SYMBOL(ib_dealloc_mw); | |
1253 | ||
1254 | /* "Fast" memory regions */ | |
1255 | ||
1256 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, | |
1257 | int mr_access_flags, | |
1258 | struct ib_fmr_attr *fmr_attr) | |
1259 | { | |
1260 | struct ib_fmr *fmr; | |
1261 | ||
1262 | if (!pd->device->alloc_fmr) | |
1263 | return ERR_PTR(-ENOSYS); | |
1264 | ||
1265 | fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); | |
1266 | if (!IS_ERR(fmr)) { | |
1267 | fmr->device = pd->device; | |
1268 | fmr->pd = pd; | |
1269 | atomic_inc(&pd->usecnt); | |
1270 | } | |
1271 | ||
1272 | return fmr; | |
1273 | } | |
1274 | EXPORT_SYMBOL(ib_alloc_fmr); | |
1275 | ||
1276 | int ib_unmap_fmr(struct list_head *fmr_list) | |
1277 | { | |
1278 | struct ib_fmr *fmr; | |
1279 | ||
1280 | if (list_empty(fmr_list)) | |
1281 | return 0; | |
1282 | ||
1283 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); | |
1284 | return fmr->device->unmap_fmr(fmr_list); | |
1285 | } | |
1286 | EXPORT_SYMBOL(ib_unmap_fmr); | |
1287 | ||
1288 | int ib_dealloc_fmr(struct ib_fmr *fmr) | |
1289 | { | |
1290 | struct ib_pd *pd; | |
1291 | int ret; | |
1292 | ||
1293 | pd = fmr->pd; | |
1294 | ret = fmr->device->dealloc_fmr(fmr); | |
1295 | if (!ret) | |
1296 | atomic_dec(&pd->usecnt); | |
1297 | ||
1298 | return ret; | |
1299 | } | |
1300 | EXPORT_SYMBOL(ib_dealloc_fmr); | |
1301 | ||
1302 | /* Multicast groups */ | |
1303 | ||
1304 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
1305 | { | |
c3bccbfb OG |
1306 | int ret; |
1307 | ||
0c33aeed JM |
1308 | if (!qp->device->attach_mcast) |
1309 | return -ENOSYS; | |
1310 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
1311 | return -EINVAL; | |
1312 | ||
c3bccbfb OG |
1313 | ret = qp->device->attach_mcast(qp, gid, lid); |
1314 | if (!ret) | |
1315 | atomic_inc(&qp->usecnt); | |
1316 | return ret; | |
1da177e4 LT |
1317 | } |
1318 | EXPORT_SYMBOL(ib_attach_mcast); | |
1319 | ||
1320 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
1321 | { | |
c3bccbfb OG |
1322 | int ret; |
1323 | ||
0c33aeed JM |
1324 | if (!qp->device->detach_mcast) |
1325 | return -ENOSYS; | |
1326 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
1327 | return -EINVAL; | |
1328 | ||
c3bccbfb OG |
1329 | ret = qp->device->detach_mcast(qp, gid, lid); |
1330 | if (!ret) | |
1331 | atomic_dec(&qp->usecnt); | |
1332 | return ret; | |
1da177e4 LT |
1333 | } |
1334 | EXPORT_SYMBOL(ib_detach_mcast); | |
59991f94 SH |
1335 | |
1336 | struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device) | |
1337 | { | |
1338 | struct ib_xrcd *xrcd; | |
1339 | ||
1340 | if (!device->alloc_xrcd) | |
1341 | return ERR_PTR(-ENOSYS); | |
1342 | ||
1343 | xrcd = device->alloc_xrcd(device, NULL, NULL); | |
1344 | if (!IS_ERR(xrcd)) { | |
1345 | xrcd->device = device; | |
53d0bd1e | 1346 | xrcd->inode = NULL; |
59991f94 | 1347 | atomic_set(&xrcd->usecnt, 0); |
d3d72d90 SH |
1348 | mutex_init(&xrcd->tgt_qp_mutex); |
1349 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); | |
59991f94 SH |
1350 | } |
1351 | ||
1352 | return xrcd; | |
1353 | } | |
1354 | EXPORT_SYMBOL(ib_alloc_xrcd); | |
1355 | ||
1356 | int ib_dealloc_xrcd(struct ib_xrcd *xrcd) | |
1357 | { | |
d3d72d90 SH |
1358 | struct ib_qp *qp; |
1359 | int ret; | |
1360 | ||
59991f94 SH |
1361 | if (atomic_read(&xrcd->usecnt)) |
1362 | return -EBUSY; | |
1363 | ||
d3d72d90 SH |
1364 | while (!list_empty(&xrcd->tgt_qp_list)) { |
1365 | qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); | |
1366 | ret = ib_destroy_qp(qp); | |
1367 | if (ret) | |
1368 | return ret; | |
1369 | } | |
1370 | ||
59991f94 SH |
1371 | return xrcd->device->dealloc_xrcd(xrcd); |
1372 | } | |
1373 | EXPORT_SYMBOL(ib_dealloc_xrcd); | |
319a441d HHZ |
1374 | |
1375 | struct ib_flow *ib_create_flow(struct ib_qp *qp, | |
1376 | struct ib_flow_attr *flow_attr, | |
1377 | int domain) | |
1378 | { | |
1379 | struct ib_flow *flow_id; | |
1380 | if (!qp->device->create_flow) | |
1381 | return ERR_PTR(-ENOSYS); | |
1382 | ||
1383 | flow_id = qp->device->create_flow(qp, flow_attr, domain); | |
1384 | if (!IS_ERR(flow_id)) | |
1385 | atomic_inc(&qp->usecnt); | |
1386 | return flow_id; | |
1387 | } | |
1388 | EXPORT_SYMBOL(ib_create_flow); | |
1389 | ||
1390 | int ib_destroy_flow(struct ib_flow *flow_id) | |
1391 | { | |
1392 | int err; | |
1393 | struct ib_qp *qp = flow_id->qp; | |
1394 | ||
1395 | err = qp->device->destroy_flow(flow_id); | |
1396 | if (!err) | |
1397 | atomic_dec(&qp->usecnt); | |
1398 | return err; | |
1399 | } | |
1400 | EXPORT_SYMBOL(ib_destroy_flow); |