Commit | Line | Data |
---|---|---|
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 UM |
34 | #include <linux/errno.h> |
35 | #include <linux/module.h> | |
36 | #include <linux/spinlock.h> | |
37 | ||
38 | #include "usnic_log.h" | |
39 | #include "usnic_vnic.h" | |
40 | #include "usnic_fwd.h" | |
41 | #include "usnic_uiom.h" | |
9f637f79 | 42 | #include "usnic_debugfs.h" |
e3cf00d0 UM |
43 | #include "usnic_ib_qp_grp.h" |
44 | #include "usnic_ib_sysfs.h" | |
45 | #include "usnic_transport.h" | |
46 | ||
256d6a6a UM |
47 | #define DFLT_RQ_IDX 0 |
48 | ||
e3cf00d0 UM |
49 | const char *usnic_ib_qp_grp_state_to_string(enum ib_qp_state state) |
50 | { | |
51 | switch (state) { | |
52 | case IB_QPS_RESET: | |
53 | return "Rst"; | |
54 | case IB_QPS_INIT: | |
55 | return "Init"; | |
56 | case IB_QPS_RTR: | |
57 | return "RTR"; | |
58 | case IB_QPS_RTS: | |
59 | return "RTS"; | |
60 | case IB_QPS_SQD: | |
61 | return "SQD"; | |
62 | case IB_QPS_SQE: | |
63 | return "SQE"; | |
64 | case IB_QPS_ERR: | |
65 | return "ERR"; | |
66 | default: | |
fc4fa6e1 | 67 | return "UNKNOWN STATE"; |
e3cf00d0 UM |
68 | |
69 | } | |
70 | } | |
71 | ||
72 | int usnic_ib_qp_grp_dump_hdr(char *buf, int buf_sz) | |
73 | { | |
74 | return scnprintf(buf, buf_sz, "|QPN\t|State\t|PID\t|VF Idx\t|Fil ID"); | |
75 | } | |
76 | ||
77 | int usnic_ib_qp_grp_dump_rows(void *obj, char *buf, int buf_sz) | |
78 | { | |
79 | struct usnic_ib_qp_grp *qp_grp = obj; | |
256d6a6a | 80 | struct usnic_ib_qp_grp_flow *default_flow; |
e3cf00d0 | 81 | if (obj) { |
256d6a6a UM |
82 | default_flow = list_first_entry(&qp_grp->flows_lst, |
83 | struct usnic_ib_qp_grp_flow, link); | |
e3cf00d0 UM |
84 | return scnprintf(buf, buf_sz, "|%d\t|%s\t|%d\t|%hu\t|%d", |
85 | qp_grp->ibqp.qp_num, | |
86 | usnic_ib_qp_grp_state_to_string( | |
87 | qp_grp->state), | |
88 | qp_grp->owner_pid, | |
89 | usnic_vnic_get_index(qp_grp->vf->vnic), | |
256d6a6a | 90 | default_flow->flow->flow_id); |
e3cf00d0 UM |
91 | } else { |
92 | return scnprintf(buf, buf_sz, "|N/A\t|N/A\t|N/A\t|N/A\t|N/A"); | |
93 | } | |
94 | } | |
95 | ||
256d6a6a UM |
96 | static struct usnic_vnic_res_chunk * |
97 | get_qp_res_chunk(struct usnic_ib_qp_grp *qp_grp) | |
e3cf00d0 | 98 | { |
8192d4ac | 99 | lockdep_assert_held(&qp_grp->lock); |
256d6a6a UM |
100 | /* |
101 | * The QP res chunk, used to derive qp indices, | |
102 | * are just indices of the RQs | |
103 | */ | |
104 | return usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ); | |
e3cf00d0 UM |
105 | } |
106 | ||
107 | static int enable_qp_grp(struct usnic_ib_qp_grp *qp_grp) | |
108 | { | |
109 | ||
110 | int status; | |
111 | int i, vnic_idx; | |
112 | struct usnic_vnic_res_chunk *res_chunk; | |
113 | struct usnic_vnic_res *res; | |
114 | ||
8192d4ac | 115 | lockdep_assert_held(&qp_grp->lock); |
e3cf00d0 UM |
116 | |
117 | vnic_idx = usnic_vnic_get_index(qp_grp->vf->vnic); | |
118 | ||
256d6a6a | 119 | res_chunk = get_qp_res_chunk(qp_grp); |
5f4c7e4e | 120 | if (IS_ERR(res_chunk)) { |
256d6a6a UM |
121 | usnic_err("Unable to get qp res with err %ld\n", |
122 | PTR_ERR(res_chunk)); | |
5f4c7e4e | 123 | return PTR_ERR(res_chunk); |
e3cf00d0 UM |
124 | } |
125 | ||
126 | for (i = 0; i < res_chunk->cnt; i++) { | |
127 | res = res_chunk->res[i]; | |
256d6a6a | 128 | status = usnic_fwd_enable_qp(qp_grp->ufdev, vnic_idx, |
e3cf00d0 UM |
129 | res->vnic_idx); |
130 | if (status) { | |
256d6a6a UM |
131 | usnic_err("Failed to enable qp %d of %s:%d\n with err %d\n", |
132 | res->vnic_idx, qp_grp->ufdev->name, | |
e3cf00d0 UM |
133 | vnic_idx, status); |
134 | goto out_err; | |
135 | } | |
136 | } | |
137 | ||
138 | return 0; | |
139 | ||
140 | out_err: | |
141 | for (i--; i >= 0; i--) { | |
142 | res = res_chunk->res[i]; | |
256d6a6a | 143 | usnic_fwd_disable_qp(qp_grp->ufdev, vnic_idx, |
e3cf00d0 UM |
144 | res->vnic_idx); |
145 | } | |
146 | ||
147 | return status; | |
148 | } | |
149 | ||
150 | static int disable_qp_grp(struct usnic_ib_qp_grp *qp_grp) | |
151 | { | |
152 | int i, vnic_idx; | |
153 | struct usnic_vnic_res_chunk *res_chunk; | |
154 | struct usnic_vnic_res *res; | |
155 | int status = 0; | |
156 | ||
8192d4ac | 157 | lockdep_assert_held(&qp_grp->lock); |
e3cf00d0 UM |
158 | vnic_idx = usnic_vnic_get_index(qp_grp->vf->vnic); |
159 | ||
256d6a6a | 160 | res_chunk = get_qp_res_chunk(qp_grp); |
5f4c7e4e | 161 | if (IS_ERR(res_chunk)) { |
256d6a6a | 162 | usnic_err("Unable to get qp res with err %ld\n", |
e3cf00d0 | 163 | PTR_ERR(res_chunk)); |
5f4c7e4e | 164 | return PTR_ERR(res_chunk); |
e3cf00d0 UM |
165 | } |
166 | ||
167 | for (i = 0; i < res_chunk->cnt; i++) { | |
168 | res = res_chunk->res[i]; | |
256d6a6a | 169 | status = usnic_fwd_disable_qp(qp_grp->ufdev, vnic_idx, |
e3cf00d0 UM |
170 | res->vnic_idx); |
171 | if (status) { | |
172 | usnic_err("Failed to disable rq %d of %s:%d\n with err %d\n", | |
173 | res->vnic_idx, | |
256d6a6a | 174 | qp_grp->ufdev->name, |
e3cf00d0 UM |
175 | vnic_idx, status); |
176 | } | |
177 | } | |
178 | ||
179 | return status; | |
180 | ||
181 | } | |
182 | ||
256d6a6a UM |
183 | static int init_filter_action(struct usnic_ib_qp_grp *qp_grp, |
184 | struct usnic_filter_action *uaction) | |
185 | { | |
186 | struct usnic_vnic_res_chunk *res_chunk; | |
187 | ||
188 | res_chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ); | |
5f4c7e4e | 189 | if (IS_ERR(res_chunk)) { |
256d6a6a UM |
190 | usnic_err("Unable to get %s with err %ld\n", |
191 | usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_RQ), | |
192 | PTR_ERR(res_chunk)); | |
5f4c7e4e | 193 | return PTR_ERR(res_chunk); |
256d6a6a UM |
194 | } |
195 | ||
196 | uaction->vnic_idx = usnic_vnic_get_index(qp_grp->vf->vnic); | |
197 | uaction->action.type = FILTER_ACTION_RQ_STEERING; | |
198 | uaction->action.u.rq_idx = res_chunk->res[DFLT_RQ_IDX]->vnic_idx; | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | static struct usnic_ib_qp_grp_flow* | |
204 | create_roce_custom_flow(struct usnic_ib_qp_grp *qp_grp, | |
205 | struct usnic_transport_spec *trans_spec) | |
206 | { | |
207 | uint16_t port_num; | |
208 | int err; | |
209 | struct filter filter; | |
210 | struct usnic_filter_action uaction; | |
211 | struct usnic_ib_qp_grp_flow *qp_flow; | |
212 | struct usnic_fwd_flow *flow; | |
213 | enum usnic_transport_type trans_type; | |
214 | ||
215 | trans_type = trans_spec->trans_type; | |
216 | port_num = trans_spec->usnic_roce.port_num; | |
217 | ||
218 | /* Reserve Port */ | |
219 | port_num = usnic_transport_rsrv_port(trans_type, port_num); | |
220 | if (port_num == 0) | |
221 | return ERR_PTR(-EINVAL); | |
222 | ||
223 | /* Create Flow */ | |
224 | usnic_fwd_init_usnic_filter(&filter, port_num); | |
225 | err = init_filter_action(qp_grp, &uaction); | |
226 | if (err) | |
227 | goto out_unreserve_port; | |
228 | ||
229 | flow = usnic_fwd_alloc_flow(qp_grp->ufdev, &filter, &uaction); | |
230 | if (IS_ERR_OR_NULL(flow)) { | |
6a54d9f9 | 231 | err = flow ? PTR_ERR(flow) : -EFAULT; |
256d6a6a UM |
232 | goto out_unreserve_port; |
233 | } | |
234 | ||
235 | /* Create Flow Handle */ | |
236 | qp_flow = kzalloc(sizeof(*qp_flow), GFP_ATOMIC); | |
fe274c5a IY |
237 | if (!qp_flow) { |
238 | err = -ENOMEM; | |
256d6a6a UM |
239 | goto out_dealloc_flow; |
240 | } | |
241 | qp_flow->flow = flow; | |
242 | qp_flow->trans_type = trans_type; | |
243 | qp_flow->usnic_roce.port_num = port_num; | |
244 | qp_flow->qp_grp = qp_grp; | |
245 | return qp_flow; | |
246 | ||
247 | out_dealloc_flow: | |
248 | usnic_fwd_dealloc_flow(flow); | |
249 | out_unreserve_port: | |
250 | usnic_transport_unrsrv_port(trans_type, port_num); | |
251 | return ERR_PTR(err); | |
252 | } | |
253 | ||
254 | static void release_roce_custom_flow(struct usnic_ib_qp_grp_flow *qp_flow) | |
255 | { | |
256 | usnic_fwd_dealloc_flow(qp_flow->flow); | |
257 | usnic_transport_unrsrv_port(qp_flow->trans_type, | |
258 | qp_flow->usnic_roce.port_num); | |
259 | kfree(qp_flow); | |
260 | } | |
261 | ||
e45e614e UM |
262 | static struct usnic_ib_qp_grp_flow* |
263 | create_udp_flow(struct usnic_ib_qp_grp *qp_grp, | |
264 | struct usnic_transport_spec *trans_spec) | |
265 | { | |
266 | struct socket *sock; | |
267 | int sock_fd; | |
268 | int err; | |
269 | struct filter filter; | |
270 | struct usnic_filter_action uaction; | |
271 | struct usnic_ib_qp_grp_flow *qp_flow; | |
272 | struct usnic_fwd_flow *flow; | |
273 | enum usnic_transport_type trans_type; | |
274 | uint32_t addr; | |
275 | uint16_t port_num; | |
276 | int proto; | |
277 | ||
278 | trans_type = trans_spec->trans_type; | |
279 | sock_fd = trans_spec->udp.sock_fd; | |
280 | ||
281 | /* Get and check socket */ | |
282 | sock = usnic_transport_get_socket(sock_fd); | |
283 | if (IS_ERR_OR_NULL(sock)) | |
284 | return ERR_CAST(sock); | |
285 | ||
286 | err = usnic_transport_sock_get_addr(sock, &proto, &addr, &port_num); | |
287 | if (err) | |
288 | goto out_put_sock; | |
289 | ||
290 | if (proto != IPPROTO_UDP) { | |
291 | usnic_err("Protocol for fd %d is not UDP", sock_fd); | |
292 | err = -EPERM; | |
293 | goto out_put_sock; | |
294 | } | |
295 | ||
296 | /* Create flow */ | |
297 | usnic_fwd_init_udp_filter(&filter, addr, port_num); | |
298 | err = init_filter_action(qp_grp, &uaction); | |
299 | if (err) | |
300 | goto out_put_sock; | |
301 | ||
302 | flow = usnic_fwd_alloc_flow(qp_grp->ufdev, &filter, &uaction); | |
303 | if (IS_ERR_OR_NULL(flow)) { | |
6a54d9f9 | 304 | err = flow ? PTR_ERR(flow) : -EFAULT; |
e45e614e UM |
305 | goto out_put_sock; |
306 | } | |
307 | ||
308 | /* Create qp_flow */ | |
309 | qp_flow = kzalloc(sizeof(*qp_flow), GFP_ATOMIC); | |
fe274c5a IY |
310 | if (!qp_flow) { |
311 | err = -ENOMEM; | |
e45e614e UM |
312 | goto out_dealloc_flow; |
313 | } | |
314 | qp_flow->flow = flow; | |
315 | qp_flow->trans_type = trans_type; | |
316 | qp_flow->udp.sock = sock; | |
317 | qp_flow->qp_grp = qp_grp; | |
318 | return qp_flow; | |
319 | ||
320 | out_dealloc_flow: | |
321 | usnic_fwd_dealloc_flow(flow); | |
322 | out_put_sock: | |
323 | usnic_transport_put_socket(sock); | |
324 | return ERR_PTR(err); | |
325 | } | |
326 | ||
327 | static void release_udp_flow(struct usnic_ib_qp_grp_flow *qp_flow) | |
328 | { | |
329 | usnic_fwd_dealloc_flow(qp_flow->flow); | |
330 | usnic_transport_put_socket(qp_flow->udp.sock); | |
331 | kfree(qp_flow); | |
332 | } | |
333 | ||
256d6a6a UM |
334 | static struct usnic_ib_qp_grp_flow* |
335 | create_and_add_flow(struct usnic_ib_qp_grp *qp_grp, | |
336 | struct usnic_transport_spec *trans_spec) | |
337 | { | |
338 | struct usnic_ib_qp_grp_flow *qp_flow; | |
339 | enum usnic_transport_type trans_type; | |
340 | ||
341 | trans_type = trans_spec->trans_type; | |
342 | switch (trans_type) { | |
343 | case USNIC_TRANSPORT_ROCE_CUSTOM: | |
344 | qp_flow = create_roce_custom_flow(qp_grp, trans_spec); | |
345 | break; | |
e45e614e UM |
346 | case USNIC_TRANSPORT_IPV4_UDP: |
347 | qp_flow = create_udp_flow(qp_grp, trans_spec); | |
348 | break; | |
256d6a6a UM |
349 | default: |
350 | usnic_err("Unsupported transport %u\n", | |
351 | trans_spec->trans_type); | |
352 | return ERR_PTR(-EINVAL); | |
353 | } | |
354 | ||
9f637f79 | 355 | if (!IS_ERR_OR_NULL(qp_flow)) { |
256d6a6a | 356 | list_add_tail(&qp_flow->link, &qp_grp->flows_lst); |
9f637f79 UM |
357 | usnic_debugfs_flow_add(qp_flow); |
358 | } | |
256d6a6a UM |
359 | |
360 | ||
361 | return qp_flow; | |
362 | } | |
363 | ||
364 | static void release_and_remove_flow(struct usnic_ib_qp_grp_flow *qp_flow) | |
365 | { | |
9f637f79 | 366 | usnic_debugfs_flow_remove(qp_flow); |
256d6a6a UM |
367 | list_del(&qp_flow->link); |
368 | ||
369 | switch (qp_flow->trans_type) { | |
370 | case USNIC_TRANSPORT_ROCE_CUSTOM: | |
371 | release_roce_custom_flow(qp_flow); | |
372 | break; | |
e45e614e UM |
373 | case USNIC_TRANSPORT_IPV4_UDP: |
374 | release_udp_flow(qp_flow); | |
375 | break; | |
256d6a6a UM |
376 | default: |
377 | WARN(1, "Unsupported transport %u\n", | |
378 | qp_flow->trans_type); | |
379 | break; | |
380 | } | |
381 | } | |
382 | ||
383 | static void release_and_remove_all_flows(struct usnic_ib_qp_grp *qp_grp) | |
384 | { | |
385 | struct usnic_ib_qp_grp_flow *qp_flow, *tmp; | |
386 | list_for_each_entry_safe(qp_flow, tmp, &qp_grp->flows_lst, link) | |
387 | release_and_remove_flow(qp_flow); | |
388 | } | |
389 | ||
e3cf00d0 UM |
390 | int usnic_ib_qp_grp_modify(struct usnic_ib_qp_grp *qp_grp, |
391 | enum ib_qp_state new_state, | |
256d6a6a | 392 | void *data) |
e3cf00d0 UM |
393 | { |
394 | int status = 0; | |
e3cf00d0 UM |
395 | struct ib_event ib_event; |
396 | enum ib_qp_state old_state; | |
256d6a6a UM |
397 | struct usnic_transport_spec *trans_spec; |
398 | struct usnic_ib_qp_grp_flow *qp_flow; | |
e3cf00d0 UM |
399 | |
400 | old_state = qp_grp->state; | |
256d6a6a | 401 | trans_spec = (struct usnic_transport_spec *) data; |
e3cf00d0 UM |
402 | |
403 | spin_lock(&qp_grp->lock); | |
404 | switch (new_state) { | |
405 | case IB_QPS_RESET: | |
406 | switch (old_state) { | |
407 | case IB_QPS_RESET: | |
408 | /* NO-OP */ | |
409 | break; | |
410 | case IB_QPS_INIT: | |
256d6a6a UM |
411 | release_and_remove_all_flows(qp_grp); |
412 | status = 0; | |
e3cf00d0 UM |
413 | break; |
414 | case IB_QPS_RTR: | |
415 | case IB_QPS_RTS: | |
416 | case IB_QPS_ERR: | |
417 | status = disable_qp_grp(qp_grp); | |
256d6a6a | 418 | release_and_remove_all_flows(qp_grp); |
e3cf00d0 UM |
419 | break; |
420 | default: | |
421 | status = -EINVAL; | |
422 | } | |
423 | break; | |
424 | case IB_QPS_INIT: | |
425 | switch (old_state) { | |
426 | case IB_QPS_RESET: | |
256d6a6a UM |
427 | if (trans_spec) { |
428 | qp_flow = create_and_add_flow(qp_grp, | |
429 | trans_spec); | |
430 | if (IS_ERR_OR_NULL(qp_flow)) { | |
6a54d9f9 | 431 | status = qp_flow ? PTR_ERR(qp_flow) : -EFAULT; |
256d6a6a UM |
432 | break; |
433 | } | |
434 | } else { | |
435 | /* | |
436 | * Optional to specify filters. | |
437 | */ | |
438 | status = 0; | |
439 | } | |
e3cf00d0 UM |
440 | break; |
441 | case IB_QPS_INIT: | |
256d6a6a UM |
442 | if (trans_spec) { |
443 | qp_flow = create_and_add_flow(qp_grp, | |
444 | trans_spec); | |
445 | if (IS_ERR_OR_NULL(qp_flow)) { | |
6a54d9f9 | 446 | status = qp_flow ? PTR_ERR(qp_flow) : -EFAULT; |
256d6a6a UM |
447 | break; |
448 | } | |
449 | } else { | |
450 | /* | |
451 | * Doesn't make sense to go into INIT state | |
452 | * from INIT state w/o adding filters. | |
453 | */ | |
454 | status = -EINVAL; | |
455 | } | |
e3cf00d0 UM |
456 | break; |
457 | case IB_QPS_RTR: | |
458 | status = disable_qp_grp(qp_grp); | |
459 | break; | |
460 | case IB_QPS_RTS: | |
461 | status = disable_qp_grp(qp_grp); | |
462 | break; | |
463 | default: | |
464 | status = -EINVAL; | |
465 | } | |
466 | break; | |
467 | case IB_QPS_RTR: | |
468 | switch (old_state) { | |
469 | case IB_QPS_INIT: | |
470 | status = enable_qp_grp(qp_grp); | |
471 | break; | |
472 | default: | |
473 | status = -EINVAL; | |
474 | } | |
475 | break; | |
476 | case IB_QPS_RTS: | |
477 | switch (old_state) { | |
478 | case IB_QPS_RTR: | |
479 | /* NO-OP FOR NOW */ | |
480 | break; | |
481 | default: | |
482 | status = -EINVAL; | |
483 | } | |
484 | break; | |
485 | case IB_QPS_ERR: | |
486 | ib_event.device = &qp_grp->vf->pf->ib_dev; | |
487 | ib_event.element.qp = &qp_grp->ibqp; | |
488 | ib_event.event = IB_EVENT_QP_FATAL; | |
489 | ||
490 | switch (old_state) { | |
491 | case IB_QPS_RESET: | |
492 | qp_grp->ibqp.event_handler(&ib_event, | |
493 | qp_grp->ibqp.qp_context); | |
494 | break; | |
495 | case IB_QPS_INIT: | |
256d6a6a | 496 | release_and_remove_all_flows(qp_grp); |
e3cf00d0 UM |
497 | qp_grp->ibqp.event_handler(&ib_event, |
498 | qp_grp->ibqp.qp_context); | |
499 | break; | |
500 | case IB_QPS_RTR: | |
501 | case IB_QPS_RTS: | |
502 | status = disable_qp_grp(qp_grp); | |
256d6a6a | 503 | release_and_remove_all_flows(qp_grp); |
e3cf00d0 UM |
504 | qp_grp->ibqp.event_handler(&ib_event, |
505 | qp_grp->ibqp.qp_context); | |
506 | break; | |
507 | default: | |
508 | status = -EINVAL; | |
509 | } | |
510 | break; | |
511 | default: | |
512 | status = -EINVAL; | |
513 | } | |
514 | spin_unlock(&qp_grp->lock); | |
515 | ||
516 | if (!status) { | |
517 | qp_grp->state = new_state; | |
2547a366 | 518 | usnic_info("Transitioned %u from %s to %s", |
e3cf00d0 UM |
519 | qp_grp->grp_id, |
520 | usnic_ib_qp_grp_state_to_string(old_state), | |
521 | usnic_ib_qp_grp_state_to_string(new_state)); | |
522 | } else { | |
9b13494c | 523 | usnic_err("Failed to transition %u from %s to %s", |
e3cf00d0 UM |
524 | qp_grp->grp_id, |
525 | usnic_ib_qp_grp_state_to_string(old_state), | |
526 | usnic_ib_qp_grp_state_to_string(new_state)); | |
527 | } | |
528 | ||
529 | return status; | |
530 | } | |
531 | ||
532 | static struct usnic_vnic_res_chunk** | |
533 | alloc_res_chunk_list(struct usnic_vnic *vnic, | |
534 | struct usnic_vnic_res_spec *res_spec, void *owner_obj) | |
535 | { | |
536 | enum usnic_vnic_res_type res_type; | |
537 | struct usnic_vnic_res_chunk **res_chunk_list; | |
538 | int err, i, res_cnt, res_lst_sz; | |
539 | ||
540 | for (res_lst_sz = 0; | |
541 | res_spec->resources[res_lst_sz].type != USNIC_VNIC_RES_TYPE_EOL; | |
542 | res_lst_sz++) { | |
543 | /* Do Nothing */ | |
544 | } | |
545 | ||
6396bb22 | 546 | res_chunk_list = kcalloc(res_lst_sz + 1, sizeof(*res_chunk_list), |
e3cf00d0 UM |
547 | GFP_ATOMIC); |
548 | if (!res_chunk_list) | |
549 | return ERR_PTR(-ENOMEM); | |
550 | ||
551 | for (i = 0; res_spec->resources[i].type != USNIC_VNIC_RES_TYPE_EOL; | |
552 | i++) { | |
553 | res_type = res_spec->resources[i].type; | |
554 | res_cnt = res_spec->resources[i].cnt; | |
555 | ||
556 | res_chunk_list[i] = usnic_vnic_get_resources(vnic, res_type, | |
557 | res_cnt, owner_obj); | |
558 | if (IS_ERR_OR_NULL(res_chunk_list[i])) { | |
6a54d9f9 UM |
559 | err = res_chunk_list[i] ? |
560 | PTR_ERR(res_chunk_list[i]) : -ENOMEM; | |
e3cf00d0 UM |
561 | usnic_err("Failed to get %s from %s with err %d\n", |
562 | usnic_vnic_res_type_to_str(res_type), | |
563 | usnic_vnic_pci_name(vnic), | |
564 | err); | |
565 | goto out_free_res; | |
566 | } | |
567 | } | |
568 | ||
569 | return res_chunk_list; | |
570 | ||
571 | out_free_res: | |
dc92d146 | 572 | for (i--; i >= 0; i--) |
e3cf00d0 UM |
573 | usnic_vnic_put_resources(res_chunk_list[i]); |
574 | kfree(res_chunk_list); | |
575 | return ERR_PTR(err); | |
576 | } | |
577 | ||
578 | static void free_qp_grp_res(struct usnic_vnic_res_chunk **res_chunk_list) | |
579 | { | |
580 | int i; | |
581 | for (i = 0; res_chunk_list[i]; i++) | |
582 | usnic_vnic_put_resources(res_chunk_list[i]); | |
583 | kfree(res_chunk_list); | |
584 | } | |
585 | ||
586 | static int qp_grp_and_vf_bind(struct usnic_ib_vf *vf, | |
587 | struct usnic_ib_pd *pd, | |
588 | struct usnic_ib_qp_grp *qp_grp) | |
589 | { | |
590 | int err; | |
591 | struct pci_dev *pdev; | |
592 | ||
8192d4ac | 593 | lockdep_assert_held(&vf->lock); |
e3cf00d0 UM |
594 | |
595 | pdev = usnic_vnic_get_pdev(vf->vnic); | |
596 | if (vf->qp_grp_ref_cnt == 0) { | |
597 | err = usnic_uiom_attach_dev_to_pd(pd->umem_pd, &pdev->dev); | |
598 | if (err) { | |
599 | usnic_err("Failed to attach %s to domain\n", | |
600 | pci_name(pdev)); | |
601 | return err; | |
602 | } | |
603 | vf->pd = pd; | |
604 | } | |
605 | vf->qp_grp_ref_cnt++; | |
606 | ||
607 | WARN_ON(vf->pd != pd); | |
608 | qp_grp->vf = vf; | |
609 | ||
610 | return 0; | |
611 | } | |
612 | ||
613 | static void qp_grp_and_vf_unbind(struct usnic_ib_qp_grp *qp_grp) | |
614 | { | |
615 | struct pci_dev *pdev; | |
616 | struct usnic_ib_pd *pd; | |
617 | ||
8192d4ac | 618 | lockdep_assert_held(&qp_grp->vf->lock); |
e3cf00d0 UM |
619 | |
620 | pd = qp_grp->vf->pd; | |
621 | pdev = usnic_vnic_get_pdev(qp_grp->vf->vnic); | |
622 | if (--qp_grp->vf->qp_grp_ref_cnt == 0) { | |
623 | qp_grp->vf->pd = NULL; | |
624 | usnic_uiom_detach_dev_from_pd(pd->umem_pd, &pdev->dev); | |
625 | } | |
626 | qp_grp->vf = NULL; | |
627 | } | |
628 | ||
629 | static void log_spec(struct usnic_vnic_res_spec *res_spec) | |
630 | { | |
631 | char buf[512]; | |
632 | usnic_vnic_spec_dump(buf, sizeof(buf), res_spec); | |
633 | usnic_dbg("%s\n", buf); | |
634 | } | |
635 | ||
256d6a6a UM |
636 | static int qp_grp_id_from_flow(struct usnic_ib_qp_grp_flow *qp_flow, |
637 | uint32_t *id) | |
638 | { | |
639 | enum usnic_transport_type trans_type = qp_flow->trans_type; | |
e45e614e | 640 | int err; |
f809309a | 641 | uint16_t port_num = 0; |
256d6a6a UM |
642 | |
643 | switch (trans_type) { | |
644 | case USNIC_TRANSPORT_ROCE_CUSTOM: | |
645 | *id = qp_flow->usnic_roce.port_num; | |
646 | break; | |
e45e614e UM |
647 | case USNIC_TRANSPORT_IPV4_UDP: |
648 | err = usnic_transport_sock_get_addr(qp_flow->udp.sock, | |
649 | NULL, NULL, | |
f809309a | 650 | &port_num); |
e45e614e UM |
651 | if (err) |
652 | return err; | |
f809309a UM |
653 | /* |
654 | * Copy port_num to stack first and then to *id, | |
655 | * so that the short to int cast works for little | |
656 | * and big endian systems. | |
657 | */ | |
658 | *id = port_num; | |
e45e614e | 659 | break; |
256d6a6a UM |
660 | default: |
661 | usnic_err("Unsupported transport %u\n", trans_type); | |
662 | return -EINVAL; | |
663 | } | |
664 | ||
665 | return 0; | |
666 | } | |
667 | ||
e3cf00d0 | 668 | struct usnic_ib_qp_grp * |
256d6a6a | 669 | usnic_ib_qp_grp_create(struct usnic_fwd_dev *ufdev, struct usnic_ib_vf *vf, |
e3cf00d0 UM |
670 | struct usnic_ib_pd *pd, |
671 | struct usnic_vnic_res_spec *res_spec, | |
256d6a6a | 672 | struct usnic_transport_spec *transport_spec) |
e3cf00d0 UM |
673 | { |
674 | struct usnic_ib_qp_grp *qp_grp; | |
e3cf00d0 | 675 | int err; |
256d6a6a UM |
676 | enum usnic_transport_type transport = transport_spec->trans_type; |
677 | struct usnic_ib_qp_grp_flow *qp_flow; | |
e3cf00d0 | 678 | |
8192d4ac | 679 | lockdep_assert_held(&vf->lock); |
e3cf00d0 UM |
680 | |
681 | err = usnic_vnic_res_spec_satisfied(&min_transport_spec[transport], | |
682 | res_spec); | |
683 | if (err) { | |
684 | usnic_err("Spec does not meet miniumum req for transport %d\n", | |
685 | transport); | |
686 | log_spec(res_spec); | |
687 | return ERR_PTR(err); | |
688 | } | |
689 | ||
e3cf00d0 | 690 | qp_grp = kzalloc(sizeof(*qp_grp), GFP_ATOMIC); |
02d93f8e | 691 | if (!qp_grp) |
e3cf00d0 | 692 | return NULL; |
e3cf00d0 UM |
693 | |
694 | qp_grp->res_chunk_list = alloc_res_chunk_list(vf->vnic, res_spec, | |
695 | qp_grp); | |
696 | if (IS_ERR_OR_NULL(qp_grp->res_chunk_list)) { | |
697 | err = qp_grp->res_chunk_list ? | |
698 | PTR_ERR(qp_grp->res_chunk_list) : -ENOMEM; | |
256d6a6a | 699 | goto out_free_qp_grp; |
e3cf00d0 UM |
700 | } |
701 | ||
256d6a6a UM |
702 | err = qp_grp_and_vf_bind(vf, pd, qp_grp); |
703 | if (err) | |
704 | goto out_free_res; | |
705 | ||
706 | INIT_LIST_HEAD(&qp_grp->flows_lst); | |
e3cf00d0 UM |
707 | spin_lock_init(&qp_grp->lock); |
708 | qp_grp->ufdev = ufdev; | |
e3cf00d0 UM |
709 | qp_grp->state = IB_QPS_RESET; |
710 | qp_grp->owner_pid = current->pid; | |
711 | ||
256d6a6a UM |
712 | qp_flow = create_and_add_flow(qp_grp, transport_spec); |
713 | if (IS_ERR_OR_NULL(qp_flow)) { | |
714 | usnic_err("Unable to create and add flow with err %ld\n", | |
715 | PTR_ERR(qp_flow)); | |
6a54d9f9 | 716 | err = qp_flow ? PTR_ERR(qp_flow) : -EFAULT; |
256d6a6a UM |
717 | goto out_qp_grp_vf_unbind; |
718 | } | |
e3cf00d0 | 719 | |
256d6a6a | 720 | err = qp_grp_id_from_flow(qp_flow, &qp_grp->grp_id); |
e3cf00d0 | 721 | if (err) |
256d6a6a UM |
722 | goto out_release_flow; |
723 | qp_grp->ibqp.qp_num = qp_grp->grp_id; | |
e3cf00d0 UM |
724 | |
725 | usnic_ib_sysfs_qpn_add(qp_grp); | |
726 | ||
727 | return qp_grp; | |
728 | ||
256d6a6a UM |
729 | out_release_flow: |
730 | release_and_remove_flow(qp_flow); | |
731 | out_qp_grp_vf_unbind: | |
732 | qp_grp_and_vf_unbind(qp_grp); | |
733 | out_free_res: | |
734 | free_qp_grp_res(qp_grp->res_chunk_list); | |
735 | out_free_qp_grp: | |
e3cf00d0 | 736 | kfree(qp_grp); |
e3cf00d0 UM |
737 | |
738 | return ERR_PTR(err); | |
739 | } | |
740 | ||
741 | void usnic_ib_qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp) | |
742 | { | |
e3cf00d0 UM |
743 | |
744 | WARN_ON(qp_grp->state != IB_QPS_RESET); | |
8192d4ac | 745 | lockdep_assert_held(&qp_grp->vf->lock); |
e3cf00d0 | 746 | |
9f637f79 | 747 | release_and_remove_all_flows(qp_grp); |
e3cf00d0 UM |
748 | usnic_ib_sysfs_qpn_remove(qp_grp); |
749 | qp_grp_and_vf_unbind(qp_grp); | |
750 | free_qp_grp_res(qp_grp->res_chunk_list); | |
751 | kfree(qp_grp); | |
e3cf00d0 UM |
752 | } |
753 | ||
754 | struct usnic_vnic_res_chunk* | |
755 | usnic_ib_qp_grp_get_chunk(struct usnic_ib_qp_grp *qp_grp, | |
756 | enum usnic_vnic_res_type res_type) | |
757 | { | |
758 | int i; | |
759 | ||
760 | for (i = 0; qp_grp->res_chunk_list[i]; i++) { | |
761 | if (qp_grp->res_chunk_list[i]->type == res_type) | |
762 | return qp_grp->res_chunk_list[i]; | |
763 | } | |
764 | ||
765 | return ERR_PTR(-EINVAL); | |
766 | } |