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e3cf00d0 UM |
1 | /* |
2 | * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved. | |
3 | * | |
3805eade JS |
4 | * This software is available to you under a choice of one of two |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and/or other materials | |
21 | * provided with the distribution. | |
e3cf00d0 UM |
22 | * |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | * | |
32 | */ | |
256d6a6a | 33 | #include <linux/bug.h> |
e3cf00d0 | 34 | #include <linux/errno.h> |
e3cf00d0 UM |
35 | #include <linux/spinlock.h> |
36 | ||
37 | #include "usnic_log.h" | |
38 | #include "usnic_vnic.h" | |
39 | #include "usnic_fwd.h" | |
40 | #include "usnic_uiom.h" | |
9f637f79 | 41 | #include "usnic_debugfs.h" |
e3cf00d0 UM |
42 | #include "usnic_ib_qp_grp.h" |
43 | #include "usnic_ib_sysfs.h" | |
44 | #include "usnic_transport.h" | |
45 | ||
256d6a6a UM |
46 | #define DFLT_RQ_IDX 0 |
47 | ||
e3cf00d0 UM |
48 | const char *usnic_ib_qp_grp_state_to_string(enum ib_qp_state state) |
49 | { | |
50 | switch (state) { | |
51 | case IB_QPS_RESET: | |
52 | return "Rst"; | |
53 | case IB_QPS_INIT: | |
54 | return "Init"; | |
55 | case IB_QPS_RTR: | |
56 | return "RTR"; | |
57 | case IB_QPS_RTS: | |
58 | return "RTS"; | |
59 | case IB_QPS_SQD: | |
60 | return "SQD"; | |
61 | case IB_QPS_SQE: | |
62 | return "SQE"; | |
63 | case IB_QPS_ERR: | |
64 | return "ERR"; | |
65 | default: | |
fc4fa6e1 | 66 | return "UNKNOWN STATE"; |
e3cf00d0 UM |
67 | |
68 | } | |
69 | } | |
70 | ||
71 | int usnic_ib_qp_grp_dump_hdr(char *buf, int buf_sz) | |
72 | { | |
73 | return scnprintf(buf, buf_sz, "|QPN\t|State\t|PID\t|VF Idx\t|Fil ID"); | |
74 | } | |
75 | ||
76 | int usnic_ib_qp_grp_dump_rows(void *obj, char *buf, int buf_sz) | |
77 | { | |
78 | struct usnic_ib_qp_grp *qp_grp = obj; | |
256d6a6a | 79 | struct usnic_ib_qp_grp_flow *default_flow; |
e3cf00d0 | 80 | if (obj) { |
256d6a6a UM |
81 | default_flow = list_first_entry(&qp_grp->flows_lst, |
82 | struct usnic_ib_qp_grp_flow, link); | |
e3cf00d0 UM |
83 | return scnprintf(buf, buf_sz, "|%d\t|%s\t|%d\t|%hu\t|%d", |
84 | qp_grp->ibqp.qp_num, | |
85 | usnic_ib_qp_grp_state_to_string( | |
86 | qp_grp->state), | |
87 | qp_grp->owner_pid, | |
88 | usnic_vnic_get_index(qp_grp->vf->vnic), | |
256d6a6a | 89 | default_flow->flow->flow_id); |
e3cf00d0 UM |
90 | } else { |
91 | return scnprintf(buf, buf_sz, "|N/A\t|N/A\t|N/A\t|N/A\t|N/A"); | |
92 | } | |
93 | } | |
94 | ||
256d6a6a UM |
95 | static struct usnic_vnic_res_chunk * |
96 | get_qp_res_chunk(struct usnic_ib_qp_grp *qp_grp) | |
e3cf00d0 | 97 | { |
8192d4ac | 98 | lockdep_assert_held(&qp_grp->lock); |
256d6a6a UM |
99 | /* |
100 | * The QP res chunk, used to derive qp indices, | |
101 | * are just indices of the RQs | |
102 | */ | |
103 | return usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ); | |
e3cf00d0 UM |
104 | } |
105 | ||
106 | static int enable_qp_grp(struct usnic_ib_qp_grp *qp_grp) | |
107 | { | |
108 | ||
109 | int status; | |
110 | int i, vnic_idx; | |
111 | struct usnic_vnic_res_chunk *res_chunk; | |
112 | struct usnic_vnic_res *res; | |
113 | ||
8192d4ac | 114 | lockdep_assert_held(&qp_grp->lock); |
e3cf00d0 UM |
115 | |
116 | vnic_idx = usnic_vnic_get_index(qp_grp->vf->vnic); | |
117 | ||
256d6a6a | 118 | res_chunk = get_qp_res_chunk(qp_grp); |
5f4c7e4e | 119 | if (IS_ERR(res_chunk)) { |
256d6a6a UM |
120 | usnic_err("Unable to get qp res with err %ld\n", |
121 | PTR_ERR(res_chunk)); | |
5f4c7e4e | 122 | return PTR_ERR(res_chunk); |
e3cf00d0 UM |
123 | } |
124 | ||
125 | for (i = 0; i < res_chunk->cnt; i++) { | |
126 | res = res_chunk->res[i]; | |
256d6a6a | 127 | status = usnic_fwd_enable_qp(qp_grp->ufdev, vnic_idx, |
e3cf00d0 UM |
128 | res->vnic_idx); |
129 | if (status) { | |
256d6a6a UM |
130 | usnic_err("Failed to enable qp %d of %s:%d\n with err %d\n", |
131 | res->vnic_idx, qp_grp->ufdev->name, | |
e3cf00d0 UM |
132 | vnic_idx, status); |
133 | goto out_err; | |
134 | } | |
135 | } | |
136 | ||
137 | return 0; | |
138 | ||
139 | out_err: | |
140 | for (i--; i >= 0; i--) { | |
141 | res = res_chunk->res[i]; | |
256d6a6a | 142 | usnic_fwd_disable_qp(qp_grp->ufdev, vnic_idx, |
e3cf00d0 UM |
143 | res->vnic_idx); |
144 | } | |
145 | ||
146 | return status; | |
147 | } | |
148 | ||
149 | static int disable_qp_grp(struct usnic_ib_qp_grp *qp_grp) | |
150 | { | |
151 | int i, vnic_idx; | |
152 | struct usnic_vnic_res_chunk *res_chunk; | |
153 | struct usnic_vnic_res *res; | |
154 | int status = 0; | |
155 | ||
8192d4ac | 156 | lockdep_assert_held(&qp_grp->lock); |
e3cf00d0 UM |
157 | vnic_idx = usnic_vnic_get_index(qp_grp->vf->vnic); |
158 | ||
256d6a6a | 159 | res_chunk = get_qp_res_chunk(qp_grp); |
5f4c7e4e | 160 | if (IS_ERR(res_chunk)) { |
256d6a6a | 161 | usnic_err("Unable to get qp res with err %ld\n", |
e3cf00d0 | 162 | PTR_ERR(res_chunk)); |
5f4c7e4e | 163 | return PTR_ERR(res_chunk); |
e3cf00d0 UM |
164 | } |
165 | ||
166 | for (i = 0; i < res_chunk->cnt; i++) { | |
167 | res = res_chunk->res[i]; | |
256d6a6a | 168 | status = usnic_fwd_disable_qp(qp_grp->ufdev, vnic_idx, |
e3cf00d0 UM |
169 | res->vnic_idx); |
170 | if (status) { | |
171 | usnic_err("Failed to disable rq %d of %s:%d\n with err %d\n", | |
172 | res->vnic_idx, | |
256d6a6a | 173 | qp_grp->ufdev->name, |
e3cf00d0 UM |
174 | vnic_idx, status); |
175 | } | |
176 | } | |
177 | ||
178 | return status; | |
179 | ||
180 | } | |
181 | ||
256d6a6a UM |
182 | static int init_filter_action(struct usnic_ib_qp_grp *qp_grp, |
183 | struct usnic_filter_action *uaction) | |
184 | { | |
185 | struct usnic_vnic_res_chunk *res_chunk; | |
186 | ||
187 | res_chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ); | |
5f4c7e4e | 188 | if (IS_ERR(res_chunk)) { |
256d6a6a UM |
189 | usnic_err("Unable to get %s with err %ld\n", |
190 | usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_RQ), | |
191 | PTR_ERR(res_chunk)); | |
5f4c7e4e | 192 | return PTR_ERR(res_chunk); |
256d6a6a UM |
193 | } |
194 | ||
195 | uaction->vnic_idx = usnic_vnic_get_index(qp_grp->vf->vnic); | |
196 | uaction->action.type = FILTER_ACTION_RQ_STEERING; | |
197 | uaction->action.u.rq_idx = res_chunk->res[DFLT_RQ_IDX]->vnic_idx; | |
198 | ||
199 | return 0; | |
200 | } | |
201 | ||
202 | static struct usnic_ib_qp_grp_flow* | |
203 | create_roce_custom_flow(struct usnic_ib_qp_grp *qp_grp, | |
204 | struct usnic_transport_spec *trans_spec) | |
205 | { | |
206 | uint16_t port_num; | |
207 | int err; | |
208 | struct filter filter; | |
209 | struct usnic_filter_action uaction; | |
210 | struct usnic_ib_qp_grp_flow *qp_flow; | |
211 | struct usnic_fwd_flow *flow; | |
212 | enum usnic_transport_type trans_type; | |
213 | ||
214 | trans_type = trans_spec->trans_type; | |
215 | port_num = trans_spec->usnic_roce.port_num; | |
216 | ||
217 | /* Reserve Port */ | |
218 | port_num = usnic_transport_rsrv_port(trans_type, port_num); | |
219 | if (port_num == 0) | |
220 | return ERR_PTR(-EINVAL); | |
221 | ||
222 | /* Create Flow */ | |
223 | usnic_fwd_init_usnic_filter(&filter, port_num); | |
224 | err = init_filter_action(qp_grp, &uaction); | |
225 | if (err) | |
226 | goto out_unreserve_port; | |
227 | ||
228 | flow = usnic_fwd_alloc_flow(qp_grp->ufdev, &filter, &uaction); | |
229 | if (IS_ERR_OR_NULL(flow)) { | |
6a54d9f9 | 230 | err = flow ? PTR_ERR(flow) : -EFAULT; |
256d6a6a UM |
231 | goto out_unreserve_port; |
232 | } | |
233 | ||
234 | /* Create Flow Handle */ | |
235 | qp_flow = kzalloc(sizeof(*qp_flow), GFP_ATOMIC); | |
fe274c5a IY |
236 | if (!qp_flow) { |
237 | err = -ENOMEM; | |
256d6a6a UM |
238 | goto out_dealloc_flow; |
239 | } | |
240 | qp_flow->flow = flow; | |
241 | qp_flow->trans_type = trans_type; | |
242 | qp_flow->usnic_roce.port_num = port_num; | |
243 | qp_flow->qp_grp = qp_grp; | |
244 | return qp_flow; | |
245 | ||
246 | out_dealloc_flow: | |
247 | usnic_fwd_dealloc_flow(flow); | |
248 | out_unreserve_port: | |
249 | usnic_transport_unrsrv_port(trans_type, port_num); | |
250 | return ERR_PTR(err); | |
251 | } | |
252 | ||
253 | static void release_roce_custom_flow(struct usnic_ib_qp_grp_flow *qp_flow) | |
254 | { | |
255 | usnic_fwd_dealloc_flow(qp_flow->flow); | |
256 | usnic_transport_unrsrv_port(qp_flow->trans_type, | |
257 | qp_flow->usnic_roce.port_num); | |
258 | kfree(qp_flow); | |
259 | } | |
260 | ||
e45e614e UM |
261 | static struct usnic_ib_qp_grp_flow* |
262 | create_udp_flow(struct usnic_ib_qp_grp *qp_grp, | |
263 | struct usnic_transport_spec *trans_spec) | |
264 | { | |
265 | struct socket *sock; | |
266 | int sock_fd; | |
267 | int err; | |
268 | struct filter filter; | |
269 | struct usnic_filter_action uaction; | |
270 | struct usnic_ib_qp_grp_flow *qp_flow; | |
271 | struct usnic_fwd_flow *flow; | |
272 | enum usnic_transport_type trans_type; | |
273 | uint32_t addr; | |
274 | uint16_t port_num; | |
275 | int proto; | |
276 | ||
277 | trans_type = trans_spec->trans_type; | |
278 | sock_fd = trans_spec->udp.sock_fd; | |
279 | ||
280 | /* Get and check socket */ | |
281 | sock = usnic_transport_get_socket(sock_fd); | |
282 | if (IS_ERR_OR_NULL(sock)) | |
283 | return ERR_CAST(sock); | |
284 | ||
285 | err = usnic_transport_sock_get_addr(sock, &proto, &addr, &port_num); | |
286 | if (err) | |
287 | goto out_put_sock; | |
288 | ||
289 | if (proto != IPPROTO_UDP) { | |
290 | usnic_err("Protocol for fd %d is not UDP", sock_fd); | |
291 | err = -EPERM; | |
292 | goto out_put_sock; | |
293 | } | |
294 | ||
295 | /* Create flow */ | |
296 | usnic_fwd_init_udp_filter(&filter, addr, port_num); | |
297 | err = init_filter_action(qp_grp, &uaction); | |
298 | if (err) | |
299 | goto out_put_sock; | |
300 | ||
301 | flow = usnic_fwd_alloc_flow(qp_grp->ufdev, &filter, &uaction); | |
302 | if (IS_ERR_OR_NULL(flow)) { | |
6a54d9f9 | 303 | err = flow ? PTR_ERR(flow) : -EFAULT; |
e45e614e UM |
304 | goto out_put_sock; |
305 | } | |
306 | ||
307 | /* Create qp_flow */ | |
308 | qp_flow = kzalloc(sizeof(*qp_flow), GFP_ATOMIC); | |
fe274c5a IY |
309 | if (!qp_flow) { |
310 | err = -ENOMEM; | |
e45e614e UM |
311 | goto out_dealloc_flow; |
312 | } | |
313 | qp_flow->flow = flow; | |
314 | qp_flow->trans_type = trans_type; | |
315 | qp_flow->udp.sock = sock; | |
316 | qp_flow->qp_grp = qp_grp; | |
317 | return qp_flow; | |
318 | ||
319 | out_dealloc_flow: | |
320 | usnic_fwd_dealloc_flow(flow); | |
321 | out_put_sock: | |
322 | usnic_transport_put_socket(sock); | |
323 | return ERR_PTR(err); | |
324 | } | |
325 | ||
326 | static void release_udp_flow(struct usnic_ib_qp_grp_flow *qp_flow) | |
327 | { | |
328 | usnic_fwd_dealloc_flow(qp_flow->flow); | |
329 | usnic_transport_put_socket(qp_flow->udp.sock); | |
330 | kfree(qp_flow); | |
331 | } | |
332 | ||
256d6a6a UM |
333 | static struct usnic_ib_qp_grp_flow* |
334 | create_and_add_flow(struct usnic_ib_qp_grp *qp_grp, | |
335 | struct usnic_transport_spec *trans_spec) | |
336 | { | |
337 | struct usnic_ib_qp_grp_flow *qp_flow; | |
338 | enum usnic_transport_type trans_type; | |
339 | ||
340 | trans_type = trans_spec->trans_type; | |
341 | switch (trans_type) { | |
342 | case USNIC_TRANSPORT_ROCE_CUSTOM: | |
343 | qp_flow = create_roce_custom_flow(qp_grp, trans_spec); | |
344 | break; | |
e45e614e UM |
345 | case USNIC_TRANSPORT_IPV4_UDP: |
346 | qp_flow = create_udp_flow(qp_grp, trans_spec); | |
347 | break; | |
256d6a6a UM |
348 | default: |
349 | usnic_err("Unsupported transport %u\n", | |
350 | trans_spec->trans_type); | |
351 | return ERR_PTR(-EINVAL); | |
352 | } | |
353 | ||
9f637f79 | 354 | if (!IS_ERR_OR_NULL(qp_flow)) { |
256d6a6a | 355 | list_add_tail(&qp_flow->link, &qp_grp->flows_lst); |
9f637f79 UM |
356 | usnic_debugfs_flow_add(qp_flow); |
357 | } | |
256d6a6a UM |
358 | |
359 | ||
360 | return qp_flow; | |
361 | } | |
362 | ||
363 | static void release_and_remove_flow(struct usnic_ib_qp_grp_flow *qp_flow) | |
364 | { | |
9f637f79 | 365 | usnic_debugfs_flow_remove(qp_flow); |
256d6a6a UM |
366 | list_del(&qp_flow->link); |
367 | ||
368 | switch (qp_flow->trans_type) { | |
369 | case USNIC_TRANSPORT_ROCE_CUSTOM: | |
370 | release_roce_custom_flow(qp_flow); | |
371 | break; | |
e45e614e UM |
372 | case USNIC_TRANSPORT_IPV4_UDP: |
373 | release_udp_flow(qp_flow); | |
374 | break; | |
256d6a6a UM |
375 | default: |
376 | WARN(1, "Unsupported transport %u\n", | |
377 | qp_flow->trans_type); | |
378 | break; | |
379 | } | |
380 | } | |
381 | ||
382 | static void release_and_remove_all_flows(struct usnic_ib_qp_grp *qp_grp) | |
383 | { | |
384 | struct usnic_ib_qp_grp_flow *qp_flow, *tmp; | |
385 | list_for_each_entry_safe(qp_flow, tmp, &qp_grp->flows_lst, link) | |
386 | release_and_remove_flow(qp_flow); | |
387 | } | |
388 | ||
e3cf00d0 UM |
389 | int usnic_ib_qp_grp_modify(struct usnic_ib_qp_grp *qp_grp, |
390 | enum ib_qp_state new_state, | |
256d6a6a | 391 | void *data) |
e3cf00d0 UM |
392 | { |
393 | int status = 0; | |
e3cf00d0 UM |
394 | struct ib_event ib_event; |
395 | enum ib_qp_state old_state; | |
256d6a6a UM |
396 | struct usnic_transport_spec *trans_spec; |
397 | struct usnic_ib_qp_grp_flow *qp_flow; | |
e3cf00d0 UM |
398 | |
399 | old_state = qp_grp->state; | |
256d6a6a | 400 | trans_spec = (struct usnic_transport_spec *) data; |
e3cf00d0 UM |
401 | |
402 | spin_lock(&qp_grp->lock); | |
403 | switch (new_state) { | |
404 | case IB_QPS_RESET: | |
405 | switch (old_state) { | |
406 | case IB_QPS_RESET: | |
407 | /* NO-OP */ | |
408 | break; | |
409 | case IB_QPS_INIT: | |
256d6a6a UM |
410 | release_and_remove_all_flows(qp_grp); |
411 | status = 0; | |
e3cf00d0 UM |
412 | break; |
413 | case IB_QPS_RTR: | |
414 | case IB_QPS_RTS: | |
415 | case IB_QPS_ERR: | |
416 | status = disable_qp_grp(qp_grp); | |
256d6a6a | 417 | release_and_remove_all_flows(qp_grp); |
e3cf00d0 UM |
418 | break; |
419 | default: | |
420 | status = -EINVAL; | |
421 | } | |
422 | break; | |
423 | case IB_QPS_INIT: | |
424 | switch (old_state) { | |
425 | case IB_QPS_RESET: | |
256d6a6a UM |
426 | if (trans_spec) { |
427 | qp_flow = create_and_add_flow(qp_grp, | |
428 | trans_spec); | |
429 | if (IS_ERR_OR_NULL(qp_flow)) { | |
6a54d9f9 | 430 | status = qp_flow ? PTR_ERR(qp_flow) : -EFAULT; |
256d6a6a UM |
431 | break; |
432 | } | |
433 | } else { | |
434 | /* | |
435 | * Optional to specify filters. | |
436 | */ | |
437 | status = 0; | |
438 | } | |
e3cf00d0 UM |
439 | break; |
440 | case IB_QPS_INIT: | |
256d6a6a UM |
441 | if (trans_spec) { |
442 | qp_flow = create_and_add_flow(qp_grp, | |
443 | trans_spec); | |
444 | if (IS_ERR_OR_NULL(qp_flow)) { | |
6a54d9f9 | 445 | status = qp_flow ? PTR_ERR(qp_flow) : -EFAULT; |
256d6a6a UM |
446 | break; |
447 | } | |
448 | } else { | |
449 | /* | |
450 | * Doesn't make sense to go into INIT state | |
451 | * from INIT state w/o adding filters. | |
452 | */ | |
453 | status = -EINVAL; | |
454 | } | |
e3cf00d0 UM |
455 | break; |
456 | case IB_QPS_RTR: | |
457 | status = disable_qp_grp(qp_grp); | |
458 | break; | |
459 | case IB_QPS_RTS: | |
460 | status = disable_qp_grp(qp_grp); | |
461 | break; | |
462 | default: | |
463 | status = -EINVAL; | |
464 | } | |
465 | break; | |
466 | case IB_QPS_RTR: | |
467 | switch (old_state) { | |
468 | case IB_QPS_INIT: | |
469 | status = enable_qp_grp(qp_grp); | |
470 | break; | |
471 | default: | |
472 | status = -EINVAL; | |
473 | } | |
474 | break; | |
475 | case IB_QPS_RTS: | |
476 | switch (old_state) { | |
477 | case IB_QPS_RTR: | |
478 | /* NO-OP FOR NOW */ | |
479 | break; | |
480 | default: | |
481 | status = -EINVAL; | |
482 | } | |
483 | break; | |
484 | case IB_QPS_ERR: | |
485 | ib_event.device = &qp_grp->vf->pf->ib_dev; | |
486 | ib_event.element.qp = &qp_grp->ibqp; | |
487 | ib_event.event = IB_EVENT_QP_FATAL; | |
488 | ||
489 | switch (old_state) { | |
490 | case IB_QPS_RESET: | |
491 | qp_grp->ibqp.event_handler(&ib_event, | |
492 | qp_grp->ibqp.qp_context); | |
493 | break; | |
494 | case IB_QPS_INIT: | |
256d6a6a | 495 | release_and_remove_all_flows(qp_grp); |
e3cf00d0 UM |
496 | qp_grp->ibqp.event_handler(&ib_event, |
497 | qp_grp->ibqp.qp_context); | |
498 | break; | |
499 | case IB_QPS_RTR: | |
500 | case IB_QPS_RTS: | |
501 | status = disable_qp_grp(qp_grp); | |
256d6a6a | 502 | release_and_remove_all_flows(qp_grp); |
e3cf00d0 UM |
503 | qp_grp->ibqp.event_handler(&ib_event, |
504 | qp_grp->ibqp.qp_context); | |
505 | break; | |
506 | default: | |
507 | status = -EINVAL; | |
508 | } | |
509 | break; | |
510 | default: | |
511 | status = -EINVAL; | |
512 | } | |
513 | spin_unlock(&qp_grp->lock); | |
514 | ||
515 | if (!status) { | |
516 | qp_grp->state = new_state; | |
2547a366 | 517 | usnic_info("Transitioned %u from %s to %s", |
e3cf00d0 UM |
518 | qp_grp->grp_id, |
519 | usnic_ib_qp_grp_state_to_string(old_state), | |
520 | usnic_ib_qp_grp_state_to_string(new_state)); | |
521 | } else { | |
9b13494c | 522 | usnic_err("Failed to transition %u from %s to %s", |
e3cf00d0 UM |
523 | qp_grp->grp_id, |
524 | usnic_ib_qp_grp_state_to_string(old_state), | |
525 | usnic_ib_qp_grp_state_to_string(new_state)); | |
526 | } | |
527 | ||
528 | return status; | |
529 | } | |
530 | ||
531 | static struct usnic_vnic_res_chunk** | |
532 | alloc_res_chunk_list(struct usnic_vnic *vnic, | |
533 | struct usnic_vnic_res_spec *res_spec, void *owner_obj) | |
534 | { | |
535 | enum usnic_vnic_res_type res_type; | |
536 | struct usnic_vnic_res_chunk **res_chunk_list; | |
537 | int err, i, res_cnt, res_lst_sz; | |
538 | ||
539 | for (res_lst_sz = 0; | |
540 | res_spec->resources[res_lst_sz].type != USNIC_VNIC_RES_TYPE_EOL; | |
541 | res_lst_sz++) { | |
542 | /* Do Nothing */ | |
543 | } | |
544 | ||
6396bb22 | 545 | res_chunk_list = kcalloc(res_lst_sz + 1, sizeof(*res_chunk_list), |
e3cf00d0 UM |
546 | GFP_ATOMIC); |
547 | if (!res_chunk_list) | |
548 | return ERR_PTR(-ENOMEM); | |
549 | ||
550 | for (i = 0; res_spec->resources[i].type != USNIC_VNIC_RES_TYPE_EOL; | |
551 | i++) { | |
552 | res_type = res_spec->resources[i].type; | |
553 | res_cnt = res_spec->resources[i].cnt; | |
554 | ||
555 | res_chunk_list[i] = usnic_vnic_get_resources(vnic, res_type, | |
556 | res_cnt, owner_obj); | |
557 | if (IS_ERR_OR_NULL(res_chunk_list[i])) { | |
6a54d9f9 UM |
558 | err = res_chunk_list[i] ? |
559 | PTR_ERR(res_chunk_list[i]) : -ENOMEM; | |
e3cf00d0 UM |
560 | usnic_err("Failed to get %s from %s with err %d\n", |
561 | usnic_vnic_res_type_to_str(res_type), | |
562 | usnic_vnic_pci_name(vnic), | |
563 | err); | |
564 | goto out_free_res; | |
565 | } | |
566 | } | |
567 | ||
568 | return res_chunk_list; | |
569 | ||
570 | out_free_res: | |
dc92d146 | 571 | for (i--; i >= 0; i--) |
e3cf00d0 UM |
572 | usnic_vnic_put_resources(res_chunk_list[i]); |
573 | kfree(res_chunk_list); | |
574 | return ERR_PTR(err); | |
575 | } | |
576 | ||
577 | static void free_qp_grp_res(struct usnic_vnic_res_chunk **res_chunk_list) | |
578 | { | |
579 | int i; | |
580 | for (i = 0; res_chunk_list[i]; i++) | |
581 | usnic_vnic_put_resources(res_chunk_list[i]); | |
582 | kfree(res_chunk_list); | |
583 | } | |
584 | ||
585 | static int qp_grp_and_vf_bind(struct usnic_ib_vf *vf, | |
586 | struct usnic_ib_pd *pd, | |
587 | struct usnic_ib_qp_grp *qp_grp) | |
588 | { | |
589 | int err; | |
590 | struct pci_dev *pdev; | |
591 | ||
8192d4ac | 592 | lockdep_assert_held(&vf->lock); |
e3cf00d0 UM |
593 | |
594 | pdev = usnic_vnic_get_pdev(vf->vnic); | |
595 | if (vf->qp_grp_ref_cnt == 0) { | |
596 | err = usnic_uiom_attach_dev_to_pd(pd->umem_pd, &pdev->dev); | |
597 | if (err) { | |
598 | usnic_err("Failed to attach %s to domain\n", | |
599 | pci_name(pdev)); | |
600 | return err; | |
601 | } | |
602 | vf->pd = pd; | |
603 | } | |
604 | vf->qp_grp_ref_cnt++; | |
605 | ||
606 | WARN_ON(vf->pd != pd); | |
607 | qp_grp->vf = vf; | |
608 | ||
609 | return 0; | |
610 | } | |
611 | ||
612 | static void qp_grp_and_vf_unbind(struct usnic_ib_qp_grp *qp_grp) | |
613 | { | |
614 | struct pci_dev *pdev; | |
615 | struct usnic_ib_pd *pd; | |
616 | ||
8192d4ac | 617 | lockdep_assert_held(&qp_grp->vf->lock); |
e3cf00d0 UM |
618 | |
619 | pd = qp_grp->vf->pd; | |
620 | pdev = usnic_vnic_get_pdev(qp_grp->vf->vnic); | |
621 | if (--qp_grp->vf->qp_grp_ref_cnt == 0) { | |
622 | qp_grp->vf->pd = NULL; | |
623 | usnic_uiom_detach_dev_from_pd(pd->umem_pd, &pdev->dev); | |
624 | } | |
625 | qp_grp->vf = NULL; | |
626 | } | |
627 | ||
628 | static void log_spec(struct usnic_vnic_res_spec *res_spec) | |
629 | { | |
630 | char buf[512]; | |
631 | usnic_vnic_spec_dump(buf, sizeof(buf), res_spec); | |
632 | usnic_dbg("%s\n", buf); | |
633 | } | |
634 | ||
256d6a6a UM |
635 | static int qp_grp_id_from_flow(struct usnic_ib_qp_grp_flow *qp_flow, |
636 | uint32_t *id) | |
637 | { | |
638 | enum usnic_transport_type trans_type = qp_flow->trans_type; | |
e45e614e | 639 | int err; |
f809309a | 640 | uint16_t port_num = 0; |
256d6a6a UM |
641 | |
642 | switch (trans_type) { | |
643 | case USNIC_TRANSPORT_ROCE_CUSTOM: | |
644 | *id = qp_flow->usnic_roce.port_num; | |
645 | break; | |
e45e614e UM |
646 | case USNIC_TRANSPORT_IPV4_UDP: |
647 | err = usnic_transport_sock_get_addr(qp_flow->udp.sock, | |
648 | NULL, NULL, | |
f809309a | 649 | &port_num); |
e45e614e UM |
650 | if (err) |
651 | return err; | |
f809309a UM |
652 | /* |
653 | * Copy port_num to stack first and then to *id, | |
654 | * so that the short to int cast works for little | |
655 | * and big endian systems. | |
656 | */ | |
657 | *id = port_num; | |
e45e614e | 658 | break; |
256d6a6a UM |
659 | default: |
660 | usnic_err("Unsupported transport %u\n", trans_type); | |
661 | return -EINVAL; | |
662 | } | |
663 | ||
664 | return 0; | |
665 | } | |
666 | ||
514aee66 LR |
667 | int usnic_ib_qp_grp_create(struct usnic_ib_qp_grp *qp_grp, |
668 | struct usnic_fwd_dev *ufdev, struct usnic_ib_vf *vf, | |
669 | struct usnic_ib_pd *pd, | |
670 | struct usnic_vnic_res_spec *res_spec, | |
671 | struct usnic_transport_spec *transport_spec) | |
e3cf00d0 | 672 | { |
e3cf00d0 | 673 | int err; |
256d6a6a UM |
674 | enum usnic_transport_type transport = transport_spec->trans_type; |
675 | struct usnic_ib_qp_grp_flow *qp_flow; | |
e3cf00d0 | 676 | |
8192d4ac | 677 | lockdep_assert_held(&vf->lock); |
e3cf00d0 UM |
678 | |
679 | err = usnic_vnic_res_spec_satisfied(&min_transport_spec[transport], | |
680 | res_spec); | |
681 | if (err) { | |
d12c416d | 682 | usnic_err("Spec does not meet minimum req for transport %d\n", |
e3cf00d0 UM |
683 | transport); |
684 | log_spec(res_spec); | |
514aee66 | 685 | return err; |
e3cf00d0 UM |
686 | } |
687 | ||
e3cf00d0 UM |
688 | qp_grp->res_chunk_list = alloc_res_chunk_list(vf->vnic, res_spec, |
689 | qp_grp); | |
514aee66 LR |
690 | if (IS_ERR_OR_NULL(qp_grp->res_chunk_list)) |
691 | return qp_grp->res_chunk_list ? | |
692 | PTR_ERR(qp_grp->res_chunk_list) : | |
693 | -ENOMEM; | |
e3cf00d0 | 694 | |
256d6a6a UM |
695 | err = qp_grp_and_vf_bind(vf, pd, qp_grp); |
696 | if (err) | |
697 | goto out_free_res; | |
698 | ||
699 | INIT_LIST_HEAD(&qp_grp->flows_lst); | |
e3cf00d0 UM |
700 | spin_lock_init(&qp_grp->lock); |
701 | qp_grp->ufdev = ufdev; | |
e3cf00d0 UM |
702 | qp_grp->state = IB_QPS_RESET; |
703 | qp_grp->owner_pid = current->pid; | |
704 | ||
256d6a6a UM |
705 | qp_flow = create_and_add_flow(qp_grp, transport_spec); |
706 | if (IS_ERR_OR_NULL(qp_flow)) { | |
707 | usnic_err("Unable to create and add flow with err %ld\n", | |
708 | PTR_ERR(qp_flow)); | |
6a54d9f9 | 709 | err = qp_flow ? PTR_ERR(qp_flow) : -EFAULT; |
256d6a6a UM |
710 | goto out_qp_grp_vf_unbind; |
711 | } | |
e3cf00d0 | 712 | |
256d6a6a | 713 | err = qp_grp_id_from_flow(qp_flow, &qp_grp->grp_id); |
e3cf00d0 | 714 | if (err) |
256d6a6a UM |
715 | goto out_release_flow; |
716 | qp_grp->ibqp.qp_num = qp_grp->grp_id; | |
e3cf00d0 UM |
717 | |
718 | usnic_ib_sysfs_qpn_add(qp_grp); | |
719 | ||
514aee66 | 720 | return 0; |
e3cf00d0 | 721 | |
256d6a6a UM |
722 | out_release_flow: |
723 | release_and_remove_flow(qp_flow); | |
724 | out_qp_grp_vf_unbind: | |
725 | qp_grp_and_vf_unbind(qp_grp); | |
726 | out_free_res: | |
727 | free_qp_grp_res(qp_grp->res_chunk_list); | |
514aee66 | 728 | return err; |
e3cf00d0 UM |
729 | } |
730 | ||
731 | void usnic_ib_qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp) | |
732 | { | |
e3cf00d0 UM |
733 | |
734 | WARN_ON(qp_grp->state != IB_QPS_RESET); | |
8192d4ac | 735 | lockdep_assert_held(&qp_grp->vf->lock); |
e3cf00d0 | 736 | |
9f637f79 | 737 | release_and_remove_all_flows(qp_grp); |
e3cf00d0 UM |
738 | usnic_ib_sysfs_qpn_remove(qp_grp); |
739 | qp_grp_and_vf_unbind(qp_grp); | |
740 | free_qp_grp_res(qp_grp->res_chunk_list); | |
e3cf00d0 UM |
741 | } |
742 | ||
743 | struct usnic_vnic_res_chunk* | |
744 | usnic_ib_qp_grp_get_chunk(struct usnic_ib_qp_grp *qp_grp, | |
745 | enum usnic_vnic_res_type res_type) | |
746 | { | |
747 | int i; | |
748 | ||
749 | for (i = 0; qp_grp->res_chunk_list[i]; i++) { | |
750 | if (qp_grp->res_chunk_list[i]->type == res_type) | |
751 | return qp_grp->res_chunk_list[i]; | |
752 | } | |
753 | ||
754 | return ERR_PTR(-EINVAL); | |
755 | } |