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fa619a77 HR |
1 | /* |
2 | * Copyright (c) 2005 Intel Inc. All rights reserved. | |
618a3c03 | 3 | * Copyright (c) 2005-2006 Voltaire, Inc. All rights reserved. |
fa619a77 HR |
4 | * |
5 | * This software is available to you under a choice of one of two | |
6 | * licenses. You may choose to be licensed under the terms of the GNU | |
7 | * General Public License (GPL) Version 2, available from the file | |
8 | * COPYING in the main directory of this source tree, or the | |
9 | * OpenIB.org BSD license below: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or | |
12 | * without modification, are permitted provided that the following | |
13 | * conditions are met: | |
14 | * | |
15 | * - Redistributions of source code must retain the above | |
16 | * copyright notice, this list of conditions and the following | |
17 | * disclaimer. | |
18 | * | |
19 | * - Redistributions in binary form must reproduce the above | |
20 | * copyright notice, this list of conditions and the following | |
21 | * disclaimer in the documentation and/or other materials | |
22 | * provided with the distribution. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
31 | * SOFTWARE. | |
32 | * | |
33 | * $Id: mad_rmpp.c 1921 2005-03-02 22:58:44Z sean.hefty $ | |
34 | */ | |
35 | ||
fa619a77 HR |
36 | #include "mad_priv.h" |
37 | #include "mad_rmpp.h" | |
38 | ||
39 | enum rmpp_state { | |
40 | RMPP_STATE_ACTIVE, | |
41 | RMPP_STATE_TIMEOUT, | |
42 | RMPP_STATE_COMPLETE | |
43 | }; | |
44 | ||
45 | struct mad_rmpp_recv { | |
46 | struct ib_mad_agent_private *agent; | |
47 | struct list_head list; | |
c4028958 DH |
48 | struct delayed_work timeout_work; |
49 | struct delayed_work cleanup_work; | |
1b52fa98 | 50 | struct completion comp; |
fa619a77 HR |
51 | enum rmpp_state state; |
52 | spinlock_t lock; | |
53 | atomic_t refcount; | |
54 | ||
55 | struct ib_ah *ah; | |
56 | struct ib_mad_recv_wc *rmpp_wc; | |
57 | struct ib_mad_recv_buf *cur_seg_buf; | |
58 | int last_ack; | |
59 | int seg_num; | |
60 | int newwin; | |
75ab1344 | 61 | int repwin; |
fa619a77 | 62 | |
97f52eb4 | 63 | __be64 tid; |
fa619a77 HR |
64 | u32 src_qp; |
65 | u16 slid; | |
66 | u8 mgmt_class; | |
67 | u8 class_version; | |
68 | u8 method; | |
69 | }; | |
70 | ||
1b52fa98 SH |
71 | static inline void deref_rmpp_recv(struct mad_rmpp_recv *rmpp_recv) |
72 | { | |
73 | if (atomic_dec_and_test(&rmpp_recv->refcount)) | |
74 | complete(&rmpp_recv->comp); | |
75 | } | |
76 | ||
fa619a77 HR |
77 | static void destroy_rmpp_recv(struct mad_rmpp_recv *rmpp_recv) |
78 | { | |
1b52fa98 SH |
79 | deref_rmpp_recv(rmpp_recv); |
80 | wait_for_completion(&rmpp_recv->comp); | |
fa619a77 HR |
81 | ib_destroy_ah(rmpp_recv->ah); |
82 | kfree(rmpp_recv); | |
83 | } | |
84 | ||
85 | void ib_cancel_rmpp_recvs(struct ib_mad_agent_private *agent) | |
86 | { | |
87 | struct mad_rmpp_recv *rmpp_recv, *temp_rmpp_recv; | |
88 | unsigned long flags; | |
89 | ||
90 | spin_lock_irqsave(&agent->lock, flags); | |
91 | list_for_each_entry(rmpp_recv, &agent->rmpp_list, list) { | |
92 | cancel_delayed_work(&rmpp_recv->timeout_work); | |
93 | cancel_delayed_work(&rmpp_recv->cleanup_work); | |
94 | } | |
95 | spin_unlock_irqrestore(&agent->lock, flags); | |
96 | ||
97 | flush_workqueue(agent->qp_info->port_priv->wq); | |
98 | ||
99 | list_for_each_entry_safe(rmpp_recv, temp_rmpp_recv, | |
100 | &agent->rmpp_list, list) { | |
101 | list_del(&rmpp_recv->list); | |
102 | if (rmpp_recv->state != RMPP_STATE_COMPLETE) | |
103 | ib_free_recv_mad(rmpp_recv->rmpp_wc); | |
104 | destroy_rmpp_recv(rmpp_recv); | |
105 | } | |
106 | } | |
107 | ||
f36e1793 | 108 | static void format_ack(struct ib_mad_send_buf *msg, |
fe9e08e1 SH |
109 | struct ib_rmpp_mad *data, |
110 | struct mad_rmpp_recv *rmpp_recv) | |
111 | { | |
f36e1793 | 112 | struct ib_rmpp_mad *ack = msg->mad; |
fe9e08e1 SH |
113 | unsigned long flags; |
114 | ||
f36e1793 | 115 | memcpy(ack, &data->mad_hdr, msg->hdr_len); |
fe9e08e1 SH |
116 | |
117 | ack->mad_hdr.method ^= IB_MGMT_METHOD_RESP; | |
118 | ack->rmpp_hdr.rmpp_type = IB_MGMT_RMPP_TYPE_ACK; | |
119 | ib_set_rmpp_flags(&ack->rmpp_hdr, IB_MGMT_RMPP_FLAG_ACTIVE); | |
120 | ||
121 | spin_lock_irqsave(&rmpp_recv->lock, flags); | |
122 | rmpp_recv->last_ack = rmpp_recv->seg_num; | |
123 | ack->rmpp_hdr.seg_num = cpu_to_be32(rmpp_recv->seg_num); | |
124 | ack->rmpp_hdr.paylen_newwin = cpu_to_be32(rmpp_recv->newwin); | |
125 | spin_unlock_irqrestore(&rmpp_recv->lock, flags); | |
126 | } | |
127 | ||
128 | static void ack_recv(struct mad_rmpp_recv *rmpp_recv, | |
129 | struct ib_mad_recv_wc *recv_wc) | |
130 | { | |
131 | struct ib_mad_send_buf *msg; | |
f36e1793 | 132 | int ret, hdr_len; |
fe9e08e1 | 133 | |
618a3c03 | 134 | hdr_len = ib_get_mad_data_offset(recv_wc->recv_buf.mad->mad_hdr.mgmt_class); |
fe9e08e1 | 135 | msg = ib_create_send_mad(&rmpp_recv->agent->agent, recv_wc->wc->src_qp, |
f36e1793 JM |
136 | recv_wc->wc->pkey_index, 1, hdr_len, |
137 | 0, GFP_KERNEL); | |
fe9e08e1 SH |
138 | if (!msg) |
139 | return; | |
140 | ||
f36e1793 | 141 | format_ack(msg, (struct ib_rmpp_mad *) recv_wc->recv_buf.mad, rmpp_recv); |
34816ad9 SH |
142 | msg->ah = rmpp_recv->ah; |
143 | ret = ib_post_send_mad(msg, NULL); | |
fe9e08e1 SH |
144 | if (ret) |
145 | ib_free_send_mad(msg); | |
146 | } | |
147 | ||
7cc656ef RD |
148 | static struct ib_mad_send_buf *alloc_response_msg(struct ib_mad_agent *agent, |
149 | struct ib_mad_recv_wc *recv_wc) | |
fe9e08e1 | 150 | { |
7cc656ef | 151 | struct ib_mad_send_buf *msg; |
fe9e08e1 | 152 | struct ib_ah *ah; |
f36e1793 | 153 | int hdr_len; |
fe9e08e1 SH |
154 | |
155 | ah = ib_create_ah_from_wc(agent->qp->pd, recv_wc->wc, | |
156 | recv_wc->recv_buf.grh, agent->port_num); | |
157 | if (IS_ERR(ah)) | |
7cc656ef | 158 | return (void *) ah; |
fe9e08e1 | 159 | |
618a3c03 | 160 | hdr_len = ib_get_mad_data_offset(recv_wc->recv_buf.mad->mad_hdr.mgmt_class); |
7cc656ef RD |
161 | msg = ib_create_send_mad(agent, recv_wc->wc->src_qp, |
162 | recv_wc->wc->pkey_index, 1, | |
f36e1793 | 163 | hdr_len, 0, GFP_KERNEL); |
7cc656ef | 164 | if (IS_ERR(msg)) |
fe9e08e1 | 165 | ib_destroy_ah(ah); |
7cc656ef RD |
166 | else |
167 | msg->ah = ah; | |
168 | ||
169 | return msg; | |
fe9e08e1 SH |
170 | } |
171 | ||
75ab1344 SH |
172 | static void ack_ds_ack(struct ib_mad_agent_private *agent, |
173 | struct ib_mad_recv_wc *recv_wc) | |
174 | { | |
175 | struct ib_mad_send_buf *msg; | |
176 | struct ib_rmpp_mad *rmpp_mad; | |
177 | int ret; | |
178 | ||
179 | msg = alloc_response_msg(&agent->agent, recv_wc); | |
180 | if (IS_ERR(msg)) | |
181 | return; | |
182 | ||
183 | rmpp_mad = msg->mad; | |
184 | memcpy(rmpp_mad, recv_wc->recv_buf.mad, msg->hdr_len); | |
185 | ||
186 | rmpp_mad->mad_hdr.method ^= IB_MGMT_METHOD_RESP; | |
187 | ib_set_rmpp_flags(&rmpp_mad->rmpp_hdr, IB_MGMT_RMPP_FLAG_ACTIVE); | |
188 | rmpp_mad->rmpp_hdr.seg_num = 0; | |
189 | rmpp_mad->rmpp_hdr.paylen_newwin = cpu_to_be32(1); | |
190 | ||
191 | ret = ib_post_send_mad(msg, NULL); | |
192 | if (ret) { | |
193 | ib_destroy_ah(msg->ah); | |
194 | ib_free_send_mad(msg); | |
195 | } | |
196 | } | |
197 | ||
34816ad9 | 198 | void ib_rmpp_send_handler(struct ib_mad_send_wc *mad_send_wc) |
fe9e08e1 | 199 | { |
34816ad9 SH |
200 | struct ib_rmpp_mad *rmpp_mad = mad_send_wc->send_buf->mad; |
201 | ||
202 | if (rmpp_mad->rmpp_hdr.rmpp_type != IB_MGMT_RMPP_TYPE_ACK) | |
203 | ib_destroy_ah(mad_send_wc->send_buf->ah); | |
204 | ib_free_send_mad(mad_send_wc->send_buf); | |
fe9e08e1 SH |
205 | } |
206 | ||
207 | static void nack_recv(struct ib_mad_agent_private *agent, | |
208 | struct ib_mad_recv_wc *recv_wc, u8 rmpp_status) | |
209 | { | |
210 | struct ib_mad_send_buf *msg; | |
211 | struct ib_rmpp_mad *rmpp_mad; | |
fe9e08e1 SH |
212 | int ret; |
213 | ||
7cc656ef RD |
214 | msg = alloc_response_msg(&agent->agent, recv_wc); |
215 | if (IS_ERR(msg)) | |
fe9e08e1 SH |
216 | return; |
217 | ||
34816ad9 | 218 | rmpp_mad = msg->mad; |
f36e1793 | 219 | memcpy(rmpp_mad, recv_wc->recv_buf.mad, msg->hdr_len); |
fe9e08e1 SH |
220 | |
221 | rmpp_mad->mad_hdr.method ^= IB_MGMT_METHOD_RESP; | |
222 | rmpp_mad->rmpp_hdr.rmpp_version = IB_MGMT_RMPP_VERSION; | |
223 | rmpp_mad->rmpp_hdr.rmpp_type = IB_MGMT_RMPP_TYPE_ABORT; | |
224 | ib_set_rmpp_flags(&rmpp_mad->rmpp_hdr, IB_MGMT_RMPP_FLAG_ACTIVE); | |
225 | rmpp_mad->rmpp_hdr.rmpp_status = rmpp_status; | |
226 | rmpp_mad->rmpp_hdr.seg_num = 0; | |
227 | rmpp_mad->rmpp_hdr.paylen_newwin = 0; | |
228 | ||
34816ad9 SH |
229 | ret = ib_post_send_mad(msg, NULL); |
230 | if (ret) { | |
231 | ib_destroy_ah(msg->ah); | |
232 | ib_free_send_mad(msg); | |
233 | } | |
fe9e08e1 SH |
234 | } |
235 | ||
c4028958 | 236 | static void recv_timeout_handler(struct work_struct *work) |
fa619a77 | 237 | { |
c4028958 DH |
238 | struct mad_rmpp_recv *rmpp_recv = |
239 | container_of(work, struct mad_rmpp_recv, timeout_work.work); | |
fa619a77 HR |
240 | struct ib_mad_recv_wc *rmpp_wc; |
241 | unsigned long flags; | |
242 | ||
243 | spin_lock_irqsave(&rmpp_recv->agent->lock, flags); | |
244 | if (rmpp_recv->state != RMPP_STATE_ACTIVE) { | |
245 | spin_unlock_irqrestore(&rmpp_recv->agent->lock, flags); | |
246 | return; | |
247 | } | |
248 | rmpp_recv->state = RMPP_STATE_TIMEOUT; | |
249 | list_del(&rmpp_recv->list); | |
250 | spin_unlock_irqrestore(&rmpp_recv->agent->lock, flags); | |
251 | ||
fa619a77 | 252 | rmpp_wc = rmpp_recv->rmpp_wc; |
fe9e08e1 | 253 | nack_recv(rmpp_recv->agent, rmpp_wc, IB_MGMT_RMPP_STATUS_T2L); |
fa619a77 HR |
254 | destroy_rmpp_recv(rmpp_recv); |
255 | ib_free_recv_mad(rmpp_wc); | |
256 | } | |
257 | ||
c4028958 | 258 | static void recv_cleanup_handler(struct work_struct *work) |
fa619a77 | 259 | { |
c4028958 DH |
260 | struct mad_rmpp_recv *rmpp_recv = |
261 | container_of(work, struct mad_rmpp_recv, cleanup_work.work); | |
fa619a77 HR |
262 | unsigned long flags; |
263 | ||
264 | spin_lock_irqsave(&rmpp_recv->agent->lock, flags); | |
265 | list_del(&rmpp_recv->list); | |
266 | spin_unlock_irqrestore(&rmpp_recv->agent->lock, flags); | |
267 | destroy_rmpp_recv(rmpp_recv); | |
268 | } | |
269 | ||
270 | static struct mad_rmpp_recv * | |
271 | create_rmpp_recv(struct ib_mad_agent_private *agent, | |
272 | struct ib_mad_recv_wc *mad_recv_wc) | |
273 | { | |
274 | struct mad_rmpp_recv *rmpp_recv; | |
275 | struct ib_mad_hdr *mad_hdr; | |
276 | ||
277 | rmpp_recv = kmalloc(sizeof *rmpp_recv, GFP_KERNEL); | |
278 | if (!rmpp_recv) | |
279 | return NULL; | |
280 | ||
281 | rmpp_recv->ah = ib_create_ah_from_wc(agent->agent.qp->pd, | |
282 | mad_recv_wc->wc, | |
283 | mad_recv_wc->recv_buf.grh, | |
284 | agent->agent.port_num); | |
285 | if (IS_ERR(rmpp_recv->ah)) | |
286 | goto error; | |
287 | ||
288 | rmpp_recv->agent = agent; | |
1b52fa98 | 289 | init_completion(&rmpp_recv->comp); |
c4028958 DH |
290 | INIT_DELAYED_WORK(&rmpp_recv->timeout_work, recv_timeout_handler); |
291 | INIT_DELAYED_WORK(&rmpp_recv->cleanup_work, recv_cleanup_handler); | |
fa619a77 HR |
292 | spin_lock_init(&rmpp_recv->lock); |
293 | rmpp_recv->state = RMPP_STATE_ACTIVE; | |
294 | atomic_set(&rmpp_recv->refcount, 1); | |
295 | ||
296 | rmpp_recv->rmpp_wc = mad_recv_wc; | |
297 | rmpp_recv->cur_seg_buf = &mad_recv_wc->recv_buf; | |
298 | rmpp_recv->newwin = 1; | |
299 | rmpp_recv->seg_num = 1; | |
300 | rmpp_recv->last_ack = 0; | |
75ab1344 | 301 | rmpp_recv->repwin = 1; |
fa619a77 HR |
302 | |
303 | mad_hdr = &mad_recv_wc->recv_buf.mad->mad_hdr; | |
304 | rmpp_recv->tid = mad_hdr->tid; | |
305 | rmpp_recv->src_qp = mad_recv_wc->wc->src_qp; | |
306 | rmpp_recv->slid = mad_recv_wc->wc->slid; | |
307 | rmpp_recv->mgmt_class = mad_hdr->mgmt_class; | |
308 | rmpp_recv->class_version = mad_hdr->class_version; | |
309 | rmpp_recv->method = mad_hdr->method; | |
310 | return rmpp_recv; | |
311 | ||
312 | error: kfree(rmpp_recv); | |
313 | return NULL; | |
314 | } | |
315 | ||
fa619a77 HR |
316 | static struct mad_rmpp_recv * |
317 | find_rmpp_recv(struct ib_mad_agent_private *agent, | |
318 | struct ib_mad_recv_wc *mad_recv_wc) | |
319 | { | |
320 | struct mad_rmpp_recv *rmpp_recv; | |
321 | struct ib_mad_hdr *mad_hdr = &mad_recv_wc->recv_buf.mad->mad_hdr; | |
322 | ||
323 | list_for_each_entry(rmpp_recv, &agent->rmpp_list, list) { | |
324 | if (rmpp_recv->tid == mad_hdr->tid && | |
325 | rmpp_recv->src_qp == mad_recv_wc->wc->src_qp && | |
326 | rmpp_recv->slid == mad_recv_wc->wc->slid && | |
327 | rmpp_recv->mgmt_class == mad_hdr->mgmt_class && | |
328 | rmpp_recv->class_version == mad_hdr->class_version && | |
329 | rmpp_recv->method == mad_hdr->method) | |
330 | return rmpp_recv; | |
331 | } | |
332 | return NULL; | |
333 | } | |
334 | ||
335 | static struct mad_rmpp_recv * | |
336 | acquire_rmpp_recv(struct ib_mad_agent_private *agent, | |
337 | struct ib_mad_recv_wc *mad_recv_wc) | |
338 | { | |
339 | struct mad_rmpp_recv *rmpp_recv; | |
340 | unsigned long flags; | |
341 | ||
342 | spin_lock_irqsave(&agent->lock, flags); | |
343 | rmpp_recv = find_rmpp_recv(agent, mad_recv_wc); | |
344 | if (rmpp_recv) | |
345 | atomic_inc(&rmpp_recv->refcount); | |
346 | spin_unlock_irqrestore(&agent->lock, flags); | |
347 | return rmpp_recv; | |
348 | } | |
349 | ||
350 | static struct mad_rmpp_recv * | |
351 | insert_rmpp_recv(struct ib_mad_agent_private *agent, | |
352 | struct mad_rmpp_recv *rmpp_recv) | |
353 | { | |
354 | struct mad_rmpp_recv *cur_rmpp_recv; | |
355 | ||
356 | cur_rmpp_recv = find_rmpp_recv(agent, rmpp_recv->rmpp_wc); | |
357 | if (!cur_rmpp_recv) | |
358 | list_add_tail(&rmpp_recv->list, &agent->rmpp_list); | |
359 | ||
360 | return cur_rmpp_recv; | |
361 | } | |
362 | ||
fa619a77 HR |
363 | static inline int get_last_flag(struct ib_mad_recv_buf *seg) |
364 | { | |
365 | struct ib_rmpp_mad *rmpp_mad; | |
366 | ||
367 | rmpp_mad = (struct ib_rmpp_mad *) seg->mad; | |
368 | return ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & IB_MGMT_RMPP_FLAG_LAST; | |
369 | } | |
370 | ||
371 | static inline int get_seg_num(struct ib_mad_recv_buf *seg) | |
372 | { | |
373 | struct ib_rmpp_mad *rmpp_mad; | |
374 | ||
375 | rmpp_mad = (struct ib_rmpp_mad *) seg->mad; | |
376 | return be32_to_cpu(rmpp_mad->rmpp_hdr.seg_num); | |
377 | } | |
378 | ||
379 | static inline struct ib_mad_recv_buf * get_next_seg(struct list_head *rmpp_list, | |
380 | struct ib_mad_recv_buf *seg) | |
381 | { | |
382 | if (seg->list.next == rmpp_list) | |
383 | return NULL; | |
384 | ||
385 | return container_of(seg->list.next, struct ib_mad_recv_buf, list); | |
386 | } | |
387 | ||
388 | static inline int window_size(struct ib_mad_agent_private *agent) | |
389 | { | |
390 | return max(agent->qp_info->recv_queue.max_active >> 3, 1); | |
391 | } | |
392 | ||
393 | static struct ib_mad_recv_buf * find_seg_location(struct list_head *rmpp_list, | |
394 | int seg_num) | |
395 | { | |
3cd96564 | 396 | struct ib_mad_recv_buf *seg_buf; |
fa619a77 HR |
397 | int cur_seg_num; |
398 | ||
399 | list_for_each_entry_reverse(seg_buf, rmpp_list, list) { | |
400 | cur_seg_num = get_seg_num(seg_buf); | |
401 | if (seg_num > cur_seg_num) | |
402 | return seg_buf; | |
403 | if (seg_num == cur_seg_num) | |
404 | break; | |
405 | } | |
406 | return NULL; | |
407 | } | |
408 | ||
409 | static void update_seg_num(struct mad_rmpp_recv *rmpp_recv, | |
410 | struct ib_mad_recv_buf *new_buf) | |
411 | { | |
412 | struct list_head *rmpp_list = &rmpp_recv->rmpp_wc->rmpp_list; | |
413 | ||
414 | while (new_buf && (get_seg_num(new_buf) == rmpp_recv->seg_num + 1)) { | |
415 | rmpp_recv->cur_seg_buf = new_buf; | |
416 | rmpp_recv->seg_num++; | |
417 | new_buf = get_next_seg(rmpp_list, new_buf); | |
418 | } | |
419 | } | |
420 | ||
421 | static inline int get_mad_len(struct mad_rmpp_recv *rmpp_recv) | |
422 | { | |
423 | struct ib_rmpp_mad *rmpp_mad; | |
424 | int hdr_size, data_size, pad; | |
425 | ||
426 | rmpp_mad = (struct ib_rmpp_mad *)rmpp_recv->cur_seg_buf->mad; | |
427 | ||
618a3c03 | 428 | hdr_size = ib_get_mad_data_offset(rmpp_mad->mad_hdr.mgmt_class); |
fa619a77 | 429 | data_size = sizeof(struct ib_rmpp_mad) - hdr_size; |
f2065e42 HR |
430 | pad = IB_MGMT_RMPP_DATA - be32_to_cpu(rmpp_mad->rmpp_hdr.paylen_newwin); |
431 | if (pad > IB_MGMT_RMPP_DATA || pad < 0) | |
fa619a77 HR |
432 | pad = 0; |
433 | ||
434 | return hdr_size + rmpp_recv->seg_num * data_size - pad; | |
435 | } | |
436 | ||
437 | static struct ib_mad_recv_wc * complete_rmpp(struct mad_rmpp_recv *rmpp_recv) | |
438 | { | |
439 | struct ib_mad_recv_wc *rmpp_wc; | |
440 | ||
441 | ack_recv(rmpp_recv, rmpp_recv->rmpp_wc); | |
442 | if (rmpp_recv->seg_num > 1) | |
443 | cancel_delayed_work(&rmpp_recv->timeout_work); | |
444 | ||
445 | rmpp_wc = rmpp_recv->rmpp_wc; | |
446 | rmpp_wc->mad_len = get_mad_len(rmpp_recv); | |
447 | /* 10 seconds until we can find the packet lifetime */ | |
448 | queue_delayed_work(rmpp_recv->agent->qp_info->port_priv->wq, | |
449 | &rmpp_recv->cleanup_work, msecs_to_jiffies(10000)); | |
450 | return rmpp_wc; | |
451 | } | |
452 | ||
fa619a77 HR |
453 | static struct ib_mad_recv_wc * |
454 | continue_rmpp(struct ib_mad_agent_private *agent, | |
455 | struct ib_mad_recv_wc *mad_recv_wc) | |
456 | { | |
457 | struct mad_rmpp_recv *rmpp_recv; | |
458 | struct ib_mad_recv_buf *prev_buf; | |
459 | struct ib_mad_recv_wc *done_wc; | |
460 | int seg_num; | |
461 | unsigned long flags; | |
462 | ||
463 | rmpp_recv = acquire_rmpp_recv(agent, mad_recv_wc); | |
464 | if (!rmpp_recv) | |
465 | goto drop1; | |
466 | ||
467 | seg_num = get_seg_num(&mad_recv_wc->recv_buf); | |
468 | ||
469 | spin_lock_irqsave(&rmpp_recv->lock, flags); | |
470 | if ((rmpp_recv->state == RMPP_STATE_TIMEOUT) || | |
471 | (seg_num > rmpp_recv->newwin)) | |
472 | goto drop3; | |
473 | ||
474 | if ((seg_num <= rmpp_recv->last_ack) || | |
475 | (rmpp_recv->state == RMPP_STATE_COMPLETE)) { | |
476 | spin_unlock_irqrestore(&rmpp_recv->lock, flags); | |
477 | ack_recv(rmpp_recv, mad_recv_wc); | |
478 | goto drop2; | |
479 | } | |
480 | ||
481 | prev_buf = find_seg_location(&rmpp_recv->rmpp_wc->rmpp_list, seg_num); | |
482 | if (!prev_buf) | |
483 | goto drop3; | |
484 | ||
485 | done_wc = NULL; | |
486 | list_add(&mad_recv_wc->recv_buf.list, &prev_buf->list); | |
487 | if (rmpp_recv->cur_seg_buf == prev_buf) { | |
488 | update_seg_num(rmpp_recv, &mad_recv_wc->recv_buf); | |
489 | if (get_last_flag(rmpp_recv->cur_seg_buf)) { | |
490 | rmpp_recv->state = RMPP_STATE_COMPLETE; | |
491 | spin_unlock_irqrestore(&rmpp_recv->lock, flags); | |
492 | done_wc = complete_rmpp(rmpp_recv); | |
493 | goto out; | |
494 | } else if (rmpp_recv->seg_num == rmpp_recv->newwin) { | |
495 | rmpp_recv->newwin += window_size(agent); | |
496 | spin_unlock_irqrestore(&rmpp_recv->lock, flags); | |
497 | ack_recv(rmpp_recv, mad_recv_wc); | |
498 | goto out; | |
499 | } | |
500 | } | |
501 | spin_unlock_irqrestore(&rmpp_recv->lock, flags); | |
502 | out: | |
503 | deref_rmpp_recv(rmpp_recv); | |
504 | return done_wc; | |
505 | ||
506 | drop3: spin_unlock_irqrestore(&rmpp_recv->lock, flags); | |
507 | drop2: deref_rmpp_recv(rmpp_recv); | |
508 | drop1: ib_free_recv_mad(mad_recv_wc); | |
509 | return NULL; | |
510 | } | |
511 | ||
512 | static struct ib_mad_recv_wc * | |
513 | start_rmpp(struct ib_mad_agent_private *agent, | |
514 | struct ib_mad_recv_wc *mad_recv_wc) | |
515 | { | |
516 | struct mad_rmpp_recv *rmpp_recv; | |
517 | unsigned long flags; | |
518 | ||
519 | rmpp_recv = create_rmpp_recv(agent, mad_recv_wc); | |
520 | if (!rmpp_recv) { | |
521 | ib_free_recv_mad(mad_recv_wc); | |
522 | return NULL; | |
523 | } | |
524 | ||
525 | spin_lock_irqsave(&agent->lock, flags); | |
526 | if (insert_rmpp_recv(agent, rmpp_recv)) { | |
527 | spin_unlock_irqrestore(&agent->lock, flags); | |
528 | /* duplicate first MAD */ | |
529 | destroy_rmpp_recv(rmpp_recv); | |
530 | return continue_rmpp(agent, mad_recv_wc); | |
531 | } | |
532 | atomic_inc(&rmpp_recv->refcount); | |
533 | ||
534 | if (get_last_flag(&mad_recv_wc->recv_buf)) { | |
535 | rmpp_recv->state = RMPP_STATE_COMPLETE; | |
536 | spin_unlock_irqrestore(&agent->lock, flags); | |
537 | complete_rmpp(rmpp_recv); | |
538 | } else { | |
539 | spin_unlock_irqrestore(&agent->lock, flags); | |
540 | /* 40 seconds until we can find the packet lifetimes */ | |
541 | queue_delayed_work(agent->qp_info->port_priv->wq, | |
542 | &rmpp_recv->timeout_work, | |
543 | msecs_to_jiffies(40000)); | |
544 | rmpp_recv->newwin += window_size(agent); | |
545 | ack_recv(rmpp_recv, mad_recv_wc); | |
546 | mad_recv_wc = NULL; | |
547 | } | |
548 | deref_rmpp_recv(rmpp_recv); | |
549 | return mad_recv_wc; | |
550 | } | |
551 | ||
fa619a77 HR |
552 | static int send_next_seg(struct ib_mad_send_wr_private *mad_send_wr) |
553 | { | |
554 | struct ib_rmpp_mad *rmpp_mad; | |
555 | int timeout; | |
f36e1793 | 556 | u32 paylen = 0; |
fa619a77 | 557 | |
34816ad9 | 558 | rmpp_mad = mad_send_wr->send_buf.mad; |
fa619a77 | 559 | ib_set_rmpp_flags(&rmpp_mad->rmpp_hdr, IB_MGMT_RMPP_FLAG_ACTIVE); |
f36e1793 | 560 | rmpp_mad->rmpp_hdr.seg_num = cpu_to_be32(++mad_send_wr->seg_num); |
fa619a77 HR |
561 | |
562 | if (mad_send_wr->seg_num == 1) { | |
563 | rmpp_mad->rmpp_hdr.rmpp_rtime_flags |= IB_MGMT_RMPP_FLAG_FIRST; | |
f36e1793 | 564 | paylen = mad_send_wr->send_buf.seg_count * IB_MGMT_RMPP_DATA - |
972d512a | 565 | mad_send_wr->pad; |
fa619a77 HR |
566 | } |
567 | ||
f36e1793 | 568 | if (mad_send_wr->seg_num == mad_send_wr->send_buf.seg_count) { |
fa619a77 | 569 | rmpp_mad->rmpp_hdr.rmpp_rtime_flags |= IB_MGMT_RMPP_FLAG_LAST; |
972d512a | 570 | paylen = IB_MGMT_RMPP_DATA - mad_send_wr->pad; |
fa619a77 | 571 | } |
f36e1793 | 572 | rmpp_mad->rmpp_hdr.paylen_newwin = cpu_to_be32(paylen); |
fa619a77 HR |
573 | |
574 | /* 2 seconds for an ACK until we can find the packet lifetime */ | |
34816ad9 | 575 | timeout = mad_send_wr->send_buf.timeout_ms; |
fa619a77 HR |
576 | if (!timeout || timeout > 2000) |
577 | mad_send_wr->timeout = msecs_to_jiffies(2000); | |
f36e1793 | 578 | |
fa619a77 HR |
579 | return ib_send_mad(mad_send_wr); |
580 | } | |
581 | ||
fa9656bb JM |
582 | static void abort_send(struct ib_mad_agent_private *agent, |
583 | struct ib_mad_recv_wc *mad_recv_wc, u8 rmpp_status) | |
fe9e08e1 SH |
584 | { |
585 | struct ib_mad_send_wr_private *mad_send_wr; | |
586 | struct ib_mad_send_wc wc; | |
587 | unsigned long flags; | |
588 | ||
589 | spin_lock_irqsave(&agent->lock, flags); | |
fa9656bb | 590 | mad_send_wr = ib_find_send_mad(agent, mad_recv_wc); |
fe9e08e1 SH |
591 | if (!mad_send_wr) |
592 | goto out; /* Unmatched send */ | |
593 | ||
f36e1793 | 594 | if ((mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) || |
fe9e08e1 SH |
595 | (!mad_send_wr->timeout) || (mad_send_wr->status != IB_WC_SUCCESS)) |
596 | goto out; /* Send is already done */ | |
597 | ||
598 | ib_mark_mad_done(mad_send_wr); | |
599 | spin_unlock_irqrestore(&agent->lock, flags); | |
600 | ||
601 | wc.status = IB_WC_REM_ABORT_ERR; | |
602 | wc.vendor_err = rmpp_status; | |
34816ad9 | 603 | wc.send_buf = &mad_send_wr->send_buf; |
fe9e08e1 SH |
604 | ib_mad_complete_send_wr(mad_send_wr, &wc); |
605 | return; | |
606 | out: | |
607 | spin_unlock_irqrestore(&agent->lock, flags); | |
608 | } | |
609 | ||
f36e1793 JM |
610 | static inline void adjust_last_ack(struct ib_mad_send_wr_private *wr, |
611 | int seg_num) | |
612 | { | |
613 | struct list_head *list; | |
614 | ||
615 | wr->last_ack = seg_num; | |
616 | list = &wr->last_ack_seg->list; | |
617 | list_for_each_entry(wr->last_ack_seg, list, list) | |
618 | if (wr->last_ack_seg->num == seg_num) | |
619 | break; | |
620 | } | |
621 | ||
75ab1344 SH |
622 | static void process_ds_ack(struct ib_mad_agent_private *agent, |
623 | struct ib_mad_recv_wc *mad_recv_wc, int newwin) | |
624 | { | |
625 | struct mad_rmpp_recv *rmpp_recv; | |
626 | ||
627 | rmpp_recv = find_rmpp_recv(agent, mad_recv_wc); | |
628 | if (rmpp_recv && rmpp_recv->state == RMPP_STATE_COMPLETE) | |
629 | rmpp_recv->repwin = newwin; | |
630 | } | |
631 | ||
fa619a77 HR |
632 | static void process_rmpp_ack(struct ib_mad_agent_private *agent, |
633 | struct ib_mad_recv_wc *mad_recv_wc) | |
634 | { | |
635 | struct ib_mad_send_wr_private *mad_send_wr; | |
636 | struct ib_rmpp_mad *rmpp_mad; | |
637 | unsigned long flags; | |
638 | int seg_num, newwin, ret; | |
639 | ||
640 | rmpp_mad = (struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad; | |
fe9e08e1 | 641 | if (rmpp_mad->rmpp_hdr.rmpp_status) { |
fa9656bb | 642 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
fe9e08e1 | 643 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
fa619a77 | 644 | return; |
fe9e08e1 | 645 | } |
fa619a77 HR |
646 | |
647 | seg_num = be32_to_cpu(rmpp_mad->rmpp_hdr.seg_num); | |
648 | newwin = be32_to_cpu(rmpp_mad->rmpp_hdr.paylen_newwin); | |
fe9e08e1 | 649 | if (newwin < seg_num) { |
fa9656bb | 650 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_W2S); |
fe9e08e1 SH |
651 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_W2S); |
652 | return; | |
653 | } | |
fa619a77 HR |
654 | |
655 | spin_lock_irqsave(&agent->lock, flags); | |
fa9656bb | 656 | mad_send_wr = ib_find_send_mad(agent, mad_recv_wc); |
75ab1344 SH |
657 | if (!mad_send_wr) { |
658 | if (!seg_num) | |
659 | process_ds_ack(agent, mad_recv_wc, newwin); | |
660 | goto out; /* Unmatched or DS RMPP ACK */ | |
661 | } | |
662 | ||
663 | if ((mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) && | |
664 | (mad_send_wr->timeout)) { | |
665 | spin_unlock_irqrestore(&agent->lock, flags); | |
666 | ack_ds_ack(agent, mad_recv_wc); | |
667 | return; /* Repeated ACK for DS RMPP transaction */ | |
668 | } | |
fa619a77 | 669 | |
f36e1793 | 670 | if ((mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) || |
fa619a77 HR |
671 | (!mad_send_wr->timeout) || (mad_send_wr->status != IB_WC_SUCCESS)) |
672 | goto out; /* Send is already done */ | |
673 | ||
f36e1793 JM |
674 | if (seg_num > mad_send_wr->send_buf.seg_count || |
675 | seg_num > mad_send_wr->newwin) { | |
fe9e08e1 | 676 | spin_unlock_irqrestore(&agent->lock, flags); |
fa9656bb | 677 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_S2B); |
fe9e08e1 SH |
678 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_S2B); |
679 | return; | |
680 | } | |
fa619a77 HR |
681 | |
682 | if (newwin < mad_send_wr->newwin || seg_num < mad_send_wr->last_ack) | |
683 | goto out; /* Old ACK */ | |
684 | ||
685 | if (seg_num > mad_send_wr->last_ack) { | |
f36e1793 | 686 | adjust_last_ack(mad_send_wr, seg_num); |
34816ad9 | 687 | mad_send_wr->retries = mad_send_wr->send_buf.retries; |
fa619a77 HR |
688 | } |
689 | mad_send_wr->newwin = newwin; | |
f36e1793 | 690 | if (mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) { |
fa619a77 | 691 | /* If no response is expected, the ACK completes the send */ |
34816ad9 | 692 | if (!mad_send_wr->send_buf.timeout_ms) { |
fa619a77 HR |
693 | struct ib_mad_send_wc wc; |
694 | ||
695 | ib_mark_mad_done(mad_send_wr); | |
696 | spin_unlock_irqrestore(&agent->lock, flags); | |
697 | ||
698 | wc.status = IB_WC_SUCCESS; | |
699 | wc.vendor_err = 0; | |
34816ad9 | 700 | wc.send_buf = &mad_send_wr->send_buf; |
fa619a77 HR |
701 | ib_mad_complete_send_wr(mad_send_wr, &wc); |
702 | return; | |
703 | } | |
704 | if (mad_send_wr->refcount == 1) | |
34816ad9 SH |
705 | ib_reset_mad_timeout(mad_send_wr, |
706 | mad_send_wr->send_buf.timeout_ms); | |
75ab1344 SH |
707 | spin_unlock_irqrestore(&agent->lock, flags); |
708 | ack_ds_ack(agent, mad_recv_wc); | |
709 | return; | |
fa619a77 HR |
710 | } else if (mad_send_wr->refcount == 1 && |
711 | mad_send_wr->seg_num < mad_send_wr->newwin && | |
f36e1793 | 712 | mad_send_wr->seg_num < mad_send_wr->send_buf.seg_count) { |
fa619a77 HR |
713 | /* Send failure will just result in a timeout/retry */ |
714 | ret = send_next_seg(mad_send_wr); | |
715 | if (ret) | |
716 | goto out; | |
717 | ||
718 | mad_send_wr->refcount++; | |
179e0917 | 719 | list_move_tail(&mad_send_wr->agent_list, |
fa619a77 HR |
720 | &mad_send_wr->mad_agent_priv->send_list); |
721 | } | |
722 | out: | |
723 | spin_unlock_irqrestore(&agent->lock, flags); | |
724 | } | |
725 | ||
fe9e08e1 SH |
726 | static struct ib_mad_recv_wc * |
727 | process_rmpp_data(struct ib_mad_agent_private *agent, | |
728 | struct ib_mad_recv_wc *mad_recv_wc) | |
729 | { | |
730 | struct ib_rmpp_hdr *rmpp_hdr; | |
731 | u8 rmpp_status; | |
732 | ||
733 | rmpp_hdr = &((struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad)->rmpp_hdr; | |
734 | ||
735 | if (rmpp_hdr->rmpp_status) { | |
736 | rmpp_status = IB_MGMT_RMPP_STATUS_BAD_STATUS; | |
737 | goto bad; | |
738 | } | |
739 | ||
740 | if (rmpp_hdr->seg_num == __constant_htonl(1)) { | |
741 | if (!(ib_get_rmpp_flags(rmpp_hdr) & IB_MGMT_RMPP_FLAG_FIRST)) { | |
742 | rmpp_status = IB_MGMT_RMPP_STATUS_BAD_SEG; | |
743 | goto bad; | |
744 | } | |
745 | return start_rmpp(agent, mad_recv_wc); | |
746 | } else { | |
747 | if (ib_get_rmpp_flags(rmpp_hdr) & IB_MGMT_RMPP_FLAG_FIRST) { | |
748 | rmpp_status = IB_MGMT_RMPP_STATUS_BAD_SEG; | |
749 | goto bad; | |
750 | } | |
751 | return continue_rmpp(agent, mad_recv_wc); | |
752 | } | |
753 | bad: | |
754 | nack_recv(agent, mad_recv_wc, rmpp_status); | |
755 | ib_free_recv_mad(mad_recv_wc); | |
756 | return NULL; | |
757 | } | |
758 | ||
759 | static void process_rmpp_stop(struct ib_mad_agent_private *agent, | |
760 | struct ib_mad_recv_wc *mad_recv_wc) | |
761 | { | |
762 | struct ib_rmpp_mad *rmpp_mad; | |
763 | ||
764 | rmpp_mad = (struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad; | |
765 | ||
766 | if (rmpp_mad->rmpp_hdr.rmpp_status != IB_MGMT_RMPP_STATUS_RESX) { | |
fa9656bb | 767 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
fe9e08e1 SH |
768 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
769 | } else | |
fa9656bb | 770 | abort_send(agent, mad_recv_wc, rmpp_mad->rmpp_hdr.rmpp_status); |
fe9e08e1 SH |
771 | } |
772 | ||
773 | static void process_rmpp_abort(struct ib_mad_agent_private *agent, | |
774 | struct ib_mad_recv_wc *mad_recv_wc) | |
775 | { | |
776 | struct ib_rmpp_mad *rmpp_mad; | |
777 | ||
778 | rmpp_mad = (struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad; | |
779 | ||
780 | if (rmpp_mad->rmpp_hdr.rmpp_status < IB_MGMT_RMPP_STATUS_ABORT_MIN || | |
781 | rmpp_mad->rmpp_hdr.rmpp_status > IB_MGMT_RMPP_STATUS_ABORT_MAX) { | |
fa9656bb | 782 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
fe9e08e1 SH |
783 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BAD_STATUS); |
784 | } else | |
fa9656bb | 785 | abort_send(agent, mad_recv_wc, rmpp_mad->rmpp_hdr.rmpp_status); |
fe9e08e1 SH |
786 | } |
787 | ||
fa619a77 HR |
788 | struct ib_mad_recv_wc * |
789 | ib_process_rmpp_recv_wc(struct ib_mad_agent_private *agent, | |
790 | struct ib_mad_recv_wc *mad_recv_wc) | |
791 | { | |
792 | struct ib_rmpp_mad *rmpp_mad; | |
793 | ||
794 | rmpp_mad = (struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad; | |
795 | if (!(rmpp_mad->rmpp_hdr.rmpp_rtime_flags & IB_MGMT_RMPP_FLAG_ACTIVE)) | |
796 | return mad_recv_wc; | |
797 | ||
fe9e08e1 | 798 | if (rmpp_mad->rmpp_hdr.rmpp_version != IB_MGMT_RMPP_VERSION) { |
fa9656bb | 799 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_UNV); |
fe9e08e1 | 800 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_UNV); |
fa619a77 | 801 | goto out; |
fe9e08e1 | 802 | } |
fa619a77 HR |
803 | |
804 | switch (rmpp_mad->rmpp_hdr.rmpp_type) { | |
805 | case IB_MGMT_RMPP_TYPE_DATA: | |
fe9e08e1 | 806 | return process_rmpp_data(agent, mad_recv_wc); |
fa619a77 HR |
807 | case IB_MGMT_RMPP_TYPE_ACK: |
808 | process_rmpp_ack(agent, mad_recv_wc); | |
809 | break; | |
810 | case IB_MGMT_RMPP_TYPE_STOP: | |
fe9e08e1 SH |
811 | process_rmpp_stop(agent, mad_recv_wc); |
812 | break; | |
fa619a77 | 813 | case IB_MGMT_RMPP_TYPE_ABORT: |
fe9e08e1 | 814 | process_rmpp_abort(agent, mad_recv_wc); |
fa619a77 HR |
815 | break; |
816 | default: | |
fa9656bb | 817 | abort_send(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BADT); |
fe9e08e1 | 818 | nack_recv(agent, mad_recv_wc, IB_MGMT_RMPP_STATUS_BADT); |
fa619a77 HR |
819 | break; |
820 | } | |
821 | out: | |
822 | ib_free_recv_mad(mad_recv_wc); | |
823 | return NULL; | |
824 | } | |
825 | ||
75ab1344 SH |
826 | static int init_newwin(struct ib_mad_send_wr_private *mad_send_wr) |
827 | { | |
828 | struct ib_mad_agent_private *agent = mad_send_wr->mad_agent_priv; | |
829 | struct ib_mad_hdr *mad_hdr = mad_send_wr->send_buf.mad; | |
830 | struct mad_rmpp_recv *rmpp_recv; | |
831 | struct ib_ah_attr ah_attr; | |
832 | unsigned long flags; | |
833 | int newwin = 1; | |
834 | ||
835 | if (!(mad_hdr->method & IB_MGMT_METHOD_RESP)) | |
836 | goto out; | |
837 | ||
838 | spin_lock_irqsave(&agent->lock, flags); | |
839 | list_for_each_entry(rmpp_recv, &agent->rmpp_list, list) { | |
840 | if (rmpp_recv->tid != mad_hdr->tid || | |
841 | rmpp_recv->mgmt_class != mad_hdr->mgmt_class || | |
842 | rmpp_recv->class_version != mad_hdr->class_version || | |
843 | (rmpp_recv->method & IB_MGMT_METHOD_RESP)) | |
844 | continue; | |
845 | ||
846 | if (ib_query_ah(mad_send_wr->send_buf.ah, &ah_attr)) | |
847 | continue; | |
848 | ||
849 | if (rmpp_recv->slid == ah_attr.dlid) { | |
850 | newwin = rmpp_recv->repwin; | |
851 | break; | |
852 | } | |
853 | } | |
854 | spin_unlock_irqrestore(&agent->lock, flags); | |
855 | out: | |
856 | return newwin; | |
857 | } | |
858 | ||
fa619a77 HR |
859 | int ib_send_rmpp_mad(struct ib_mad_send_wr_private *mad_send_wr) |
860 | { | |
861 | struct ib_rmpp_mad *rmpp_mad; | |
f36e1793 | 862 | int ret; |
fa619a77 | 863 | |
34816ad9 | 864 | rmpp_mad = mad_send_wr->send_buf.mad; |
fa619a77 HR |
865 | if (!(ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & |
866 | IB_MGMT_RMPP_FLAG_ACTIVE)) | |
867 | return IB_RMPP_RESULT_UNHANDLED; | |
868 | ||
f36e1793 JM |
869 | if (rmpp_mad->rmpp_hdr.rmpp_type != IB_MGMT_RMPP_TYPE_DATA) { |
870 | mad_send_wr->seg_num = 1; | |
fa619a77 | 871 | return IB_RMPP_RESULT_INTERNAL; |
f36e1793 | 872 | } |
fa619a77 | 873 | |
75ab1344 | 874 | mad_send_wr->newwin = init_newwin(mad_send_wr); |
fa619a77 HR |
875 | |
876 | /* We need to wait for the final ACK even if there isn't a response */ | |
877 | mad_send_wr->refcount += (mad_send_wr->timeout == 0); | |
878 | ret = send_next_seg(mad_send_wr); | |
879 | if (!ret) | |
880 | return IB_RMPP_RESULT_CONSUMED; | |
881 | return ret; | |
882 | } | |
883 | ||
884 | int ib_process_rmpp_send_wc(struct ib_mad_send_wr_private *mad_send_wr, | |
885 | struct ib_mad_send_wc *mad_send_wc) | |
886 | { | |
887 | struct ib_rmpp_mad *rmpp_mad; | |
fa619a77 HR |
888 | int ret; |
889 | ||
34816ad9 | 890 | rmpp_mad = mad_send_wr->send_buf.mad; |
fa619a77 HR |
891 | if (!(ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & |
892 | IB_MGMT_RMPP_FLAG_ACTIVE)) | |
893 | return IB_RMPP_RESULT_UNHANDLED; /* RMPP not active */ | |
894 | ||
34816ad9 | 895 | if (rmpp_mad->rmpp_hdr.rmpp_type != IB_MGMT_RMPP_TYPE_DATA) |
fa619a77 | 896 | return IB_RMPP_RESULT_INTERNAL; /* ACK, STOP, or ABORT */ |
fa619a77 HR |
897 | |
898 | if (mad_send_wc->status != IB_WC_SUCCESS || | |
899 | mad_send_wr->status != IB_WC_SUCCESS) | |
900 | return IB_RMPP_RESULT_PROCESSED; /* Canceled or send error */ | |
901 | ||
902 | if (!mad_send_wr->timeout) | |
903 | return IB_RMPP_RESULT_PROCESSED; /* Response received */ | |
904 | ||
f36e1793 | 905 | if (mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) { |
fa619a77 | 906 | mad_send_wr->timeout = |
34816ad9 | 907 | msecs_to_jiffies(mad_send_wr->send_buf.timeout_ms); |
fa619a77 HR |
908 | return IB_RMPP_RESULT_PROCESSED; /* Send done */ |
909 | } | |
910 | ||
f36e1793 JM |
911 | if (mad_send_wr->seg_num == mad_send_wr->newwin || |
912 | mad_send_wr->seg_num == mad_send_wr->send_buf.seg_count) | |
fa619a77 HR |
913 | return IB_RMPP_RESULT_PROCESSED; /* Wait for ACK */ |
914 | ||
915 | ret = send_next_seg(mad_send_wr); | |
916 | if (ret) { | |
917 | mad_send_wc->status = IB_WC_GENERAL_ERR; | |
918 | return IB_RMPP_RESULT_PROCESSED; | |
919 | } | |
920 | return IB_RMPP_RESULT_CONSUMED; | |
921 | } | |
922 | ||
923 | int ib_retry_rmpp(struct ib_mad_send_wr_private *mad_send_wr) | |
924 | { | |
925 | struct ib_rmpp_mad *rmpp_mad; | |
926 | int ret; | |
927 | ||
34816ad9 | 928 | rmpp_mad = mad_send_wr->send_buf.mad; |
fa619a77 HR |
929 | if (!(ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & |
930 | IB_MGMT_RMPP_FLAG_ACTIVE)) | |
931 | return IB_RMPP_RESULT_UNHANDLED; /* RMPP not active */ | |
932 | ||
f36e1793 | 933 | if (mad_send_wr->last_ack == mad_send_wr->send_buf.seg_count) |
fa619a77 HR |
934 | return IB_RMPP_RESULT_PROCESSED; |
935 | ||
f36e1793 JM |
936 | mad_send_wr->seg_num = mad_send_wr->last_ack; |
937 | mad_send_wr->cur_seg = mad_send_wr->last_ack_seg; | |
938 | ||
fa619a77 HR |
939 | ret = send_next_seg(mad_send_wr); |
940 | if (ret) | |
941 | return IB_RMPP_RESULT_PROCESSED; | |
942 | ||
943 | return IB_RMPP_RESULT_CONSUMED; | |
944 | } |