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staging: rtl8188eu: Replace function name in string with __func__
[linux/fpc-iii.git] / drivers / net / ethernet / qlogic / qed / qed_iwarp.c
blobca4a81dc1ace685f4bb1cda85dc0e85746b4583a
1 /* QLogic qed NIC Driver
2 * Copyright (c) 2015-2017 QLogic Corporation
3 *
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 * OpenIB.org 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.
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 #include <linux/if_ether.h>
33 #include <linux/if_vlan.h>
34 #include <linux/ip.h>
35 #include <linux/ipv6.h>
36 #include <linux/spinlock.h>
37 #include <linux/tcp.h>
38 #include "qed_cxt.h"
39 #include "qed_hw.h"
40 #include "qed_ll2.h"
41 #include "qed_rdma.h"
42 #include "qed_reg_addr.h"
43 #include "qed_sp.h"
44 #include "qed_ooo.h"
45
46 #define QED_IWARP_ORD_DEFAULT 32
47 #define QED_IWARP_IRD_DEFAULT 32
48 #define QED_IWARP_MAX_FW_MSS 4120
49
50 #define QED_EP_SIG 0xecabcdef
51
52 struct mpa_v2_hdr {
53 __be16 ird;
54 __be16 ord;
55 };
56
57 #define MPA_V2_PEER2PEER_MODEL 0x8000
58 #define MPA_V2_SEND_RTR 0x4000 /* on ird */
59 #define MPA_V2_READ_RTR 0x4000 /* on ord */
60 #define MPA_V2_WRITE_RTR 0x8000
61 #define MPA_V2_IRD_ORD_MASK 0x3FFF
62
63 #define MPA_REV2(_mpa_rev) ((_mpa_rev) == MPA_NEGOTIATION_TYPE_ENHANCED)
64
65 #define QED_IWARP_INVALID_TCP_CID 0xffffffff
66 #define QED_IWARP_RCV_WND_SIZE_DEF (256 * 1024)
67 #define QED_IWARP_RCV_WND_SIZE_MIN (0xffff)
68 #define TIMESTAMP_HEADER_SIZE (12)
69 #define QED_IWARP_MAX_FIN_RT_DEFAULT (2)
70
71 #define QED_IWARP_TS_EN BIT(0)
72 #define QED_IWARP_DA_EN BIT(1)
73 #define QED_IWARP_PARAM_CRC_NEEDED (1)
74 #define QED_IWARP_PARAM_P2P (1)
75
76 #define QED_IWARP_DEF_MAX_RT_TIME (0)
77 #define QED_IWARP_DEF_CWND_FACTOR (4)
78 #define QED_IWARP_DEF_KA_MAX_PROBE_CNT (5)
79 #define QED_IWARP_DEF_KA_TIMEOUT (1200000) /* 20 min */
80 #define QED_IWARP_DEF_KA_INTERVAL (1000) /* 1 sec */
81
82 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
83 u8 fw_event_code, u16 echo,
84 union event_ring_data *data,
85 u8 fw_return_code);
86
87 /* Override devinfo with iWARP specific values */
88 void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn)
89 {
90 struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;
91
92 dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE;
93 dev->max_qp = min_t(u32,
94 IWARP_MAX_QPS,
95 p_hwfn->p_rdma_info->num_qps) -
96 QED_IWARP_PREALLOC_CNT;
97
98 dev->max_cq = dev->max_qp;
99
100 dev->max_qp_resp_rd_atomic_resc = QED_IWARP_IRD_DEFAULT;
101 dev->max_qp_req_rd_atomic_resc = QED_IWARP_ORD_DEFAULT;
102 }
103
104 void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
105 {
106 p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP;
107 qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1);
108 p_hwfn->b_rdma_enabled_in_prs = true;
109 }
110
111 /* We have two cid maps, one for tcp which should be used only from passive
112 * syn processing and replacing a pre-allocated ep in the list. The second
113 * for active tcp and for QPs.
114 */
115 static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid)
116 {
117 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
118
119 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
120
121 if (cid < QED_IWARP_PREALLOC_CNT)
122 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
123 cid);
124 else
125 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
126
127 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
128 }
129
130 void
131 qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
132 struct iwarp_init_func_ramrod_data *p_ramrod)
133 {
134 p_ramrod->iwarp.ll2_ooo_q_index =
135 RESC_START(p_hwfn, QED_LL2_QUEUE) +
136 p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle;
137
138 p_ramrod->tcp.max_fin_rt = QED_IWARP_MAX_FIN_RT_DEFAULT;
139
140 return;
141 }
142
143 static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid)
144 {
145 int rc;
146
147 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
148 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
149 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
150 if (rc) {
151 DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n");
152 return rc;
153 }
154 *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
155
156 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid);
157 if (rc)
158 qed_iwarp_cid_cleaned(p_hwfn, *cid);
159
160 return rc;
161 }
162
163 static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid)
164 {
165 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
166
167 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
168 qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid);
169 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
170 }
171
172 /* This function allocates a cid for passive tcp (called from syn receive)
173 * the reason it's separate from the regular cid allocation is because it
174 * is assured that these cids already have ilt allocated. They are preallocated
175 * to ensure that we won't need to allocate memory during syn processing
176 */
177 static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid)
178 {
179 int rc;
180
181 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
182
183 rc = qed_rdma_bmap_alloc_id(p_hwfn,
184 &p_hwfn->p_rdma_info->tcp_cid_map, cid);
185
186 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
187
188 if (rc) {
189 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
190 "can't allocate iwarp tcp cid max-count=%d\n",
191 p_hwfn->p_rdma_info->tcp_cid_map.max_count);
192
193 *cid = QED_IWARP_INVALID_TCP_CID;
194 return rc;
195 }
196
197 *cid += qed_cxt_get_proto_cid_start(p_hwfn,
198 p_hwfn->p_rdma_info->proto);
199 return 0;
200 }
201
202 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
203 struct qed_rdma_qp *qp,
204 struct qed_rdma_create_qp_out_params *out_params)
205 {
206 struct iwarp_create_qp_ramrod_data *p_ramrod;
207 struct qed_sp_init_data init_data;
208 struct qed_spq_entry *p_ent;
209 u16 physical_queue;
210 u32 cid;
211 int rc;
212
213 qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
214 IWARP_SHARED_QUEUE_PAGE_SIZE,
215 &qp->shared_queue_phys_addr,
216 GFP_KERNEL);
217 if (!qp->shared_queue)
218 return -ENOMEM;
219
220 out_params->sq_pbl_virt = (u8 *)qp->shared_queue +
221 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
222 out_params->sq_pbl_phys = qp->shared_queue_phys_addr +
223 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
224 out_params->rq_pbl_virt = (u8 *)qp->shared_queue +
225 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
226 out_params->rq_pbl_phys = qp->shared_queue_phys_addr +
227 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
228
229 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
230 if (rc)
231 goto err1;
232
233 qp->icid = (u16)cid;
234
235 memset(&init_data, 0, sizeof(init_data));
236 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
237 init_data.cid = qp->icid;
238 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
239
240 rc = qed_sp_init_request(p_hwfn, &p_ent,
241 IWARP_RAMROD_CMD_ID_CREATE_QP,
242 PROTOCOLID_IWARP, &init_data);
243 if (rc)
244 goto err2;
245
246 p_ramrod = &p_ent->ramrod.iwarp_create_qp;
247
248 SET_FIELD(p_ramrod->flags,
249 IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN,
250 qp->fmr_and_reserved_lkey);
251
252 SET_FIELD(p_ramrod->flags,
253 IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all);
254
255 SET_FIELD(p_ramrod->flags,
256 IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN,
257 qp->incoming_rdma_read_en);
258
259 SET_FIELD(p_ramrod->flags,
260 IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN,
261 qp->incoming_rdma_write_en);
262
263 SET_FIELD(p_ramrod->flags,
264 IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN,
265 qp->incoming_atomic_en);
266
267 SET_FIELD(p_ramrod->flags,
268 IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq);
269
270 p_ramrod->pd = qp->pd;
271 p_ramrod->sq_num_pages = qp->sq_num_pages;
272 p_ramrod->rq_num_pages = qp->rq_num_pages;
273
274 p_ramrod->qp_handle_for_cqe.hi = cpu_to_le32(qp->qp_handle.hi);
275 p_ramrod->qp_handle_for_cqe.lo = cpu_to_le32(qp->qp_handle.lo);
276
277 p_ramrod->cq_cid_for_sq =
278 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id);
279 p_ramrod->cq_cid_for_rq =
280 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id);
281
282 p_ramrod->dpi = cpu_to_le16(qp->dpi);
283
284 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
285 p_ramrod->physical_q0 = cpu_to_le16(physical_queue);
286 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
287 p_ramrod->physical_q1 = cpu_to_le16(physical_queue);
288
289 rc = qed_spq_post(p_hwfn, p_ent, NULL);
290 if (rc)
291 goto err2;
292
293 return rc;
294
295 err2:
296 qed_iwarp_cid_cleaned(p_hwfn, cid);
297 err1:
298 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
299 IWARP_SHARED_QUEUE_PAGE_SIZE,
300 qp->shared_queue, qp->shared_queue_phys_addr);
301
302 return rc;
303 }
304
305 static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
306 {
307 struct iwarp_modify_qp_ramrod_data *p_ramrod;
308 struct qed_sp_init_data init_data;
309 struct qed_spq_entry *p_ent;
310 int rc;
311
312 /* Get SPQ entry */
313 memset(&init_data, 0, sizeof(init_data));
314 init_data.cid = qp->icid;
315 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
316 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
317
318 rc = qed_sp_init_request(p_hwfn, &p_ent,
319 IWARP_RAMROD_CMD_ID_MODIFY_QP,
320 p_hwfn->p_rdma_info->proto, &init_data);
321 if (rc)
322 return rc;
323
324 p_ramrod = &p_ent->ramrod.iwarp_modify_qp;
325 SET_FIELD(p_ramrod->flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN,
326 0x1);
327 if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING)
328 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_CLOSING;
329 else
330 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_ERROR;
331
332 rc = qed_spq_post(p_hwfn, p_ent, NULL);
333
334 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc);
335
336 return rc;
337 }
338
339 enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state)
340 {
341 switch (state) {
342 case QED_ROCE_QP_STATE_RESET:
343 case QED_ROCE_QP_STATE_INIT:
344 case QED_ROCE_QP_STATE_RTR:
345 return QED_IWARP_QP_STATE_IDLE;
346 case QED_ROCE_QP_STATE_RTS:
347 return QED_IWARP_QP_STATE_RTS;
348 case QED_ROCE_QP_STATE_SQD:
349 return QED_IWARP_QP_STATE_CLOSING;
350 case QED_ROCE_QP_STATE_ERR:
351 return QED_IWARP_QP_STATE_ERROR;
352 case QED_ROCE_QP_STATE_SQE:
353 return QED_IWARP_QP_STATE_TERMINATE;
354 default:
355 return QED_IWARP_QP_STATE_ERROR;
356 }
357 }
358
359 static enum qed_roce_qp_state
360 qed_iwarp2roce_state(enum qed_iwarp_qp_state state)
361 {
362 switch (state) {
363 case QED_IWARP_QP_STATE_IDLE:
364 return QED_ROCE_QP_STATE_INIT;
365 case QED_IWARP_QP_STATE_RTS:
366 return QED_ROCE_QP_STATE_RTS;
367 case QED_IWARP_QP_STATE_TERMINATE:
368 return QED_ROCE_QP_STATE_SQE;
369 case QED_IWARP_QP_STATE_CLOSING:
370 return QED_ROCE_QP_STATE_SQD;
371 case QED_IWARP_QP_STATE_ERROR:
372 return QED_ROCE_QP_STATE_ERR;
373 default:
374 return QED_ROCE_QP_STATE_ERR;
375 }
376 }
377
378 const char *iwarp_state_names[] = {
379 "IDLE",
380 "RTS",
381 "TERMINATE",
382 "CLOSING",
383 "ERROR",
384 };
385
386 int
387 qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn,
388 struct qed_rdma_qp *qp,
389 enum qed_iwarp_qp_state new_state, bool internal)
390 {
391 enum qed_iwarp_qp_state prev_iw_state;
392 bool modify_fw = false;
393 int rc = 0;
394
395 /* modify QP can be called from upper-layer or as a result of async
396 * RST/FIN... therefore need to protect
397 */
398 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
399 prev_iw_state = qp->iwarp_state;
400
401 if (prev_iw_state == new_state) {
402 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
403 return 0;
404 }
405
406 switch (prev_iw_state) {
407 case QED_IWARP_QP_STATE_IDLE:
408 switch (new_state) {
409 case QED_IWARP_QP_STATE_RTS:
410 qp->iwarp_state = QED_IWARP_QP_STATE_RTS;
411 break;
412 case QED_IWARP_QP_STATE_ERROR:
413 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
414 if (!internal)
415 modify_fw = true;
416 break;
417 default:
418 break;
419 }
420 break;
421 case QED_IWARP_QP_STATE_RTS:
422 switch (new_state) {
423 case QED_IWARP_QP_STATE_CLOSING:
424 if (!internal)
425 modify_fw = true;
426
427 qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING;
428 break;
429 case QED_IWARP_QP_STATE_ERROR:
430 if (!internal)
431 modify_fw = true;
432 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
433 break;
434 default:
435 break;
436 }
437 break;
438 case QED_IWARP_QP_STATE_ERROR:
439 switch (new_state) {
440 case QED_IWARP_QP_STATE_IDLE:
441
442 qp->iwarp_state = new_state;
443 break;
444 case QED_IWARP_QP_STATE_CLOSING:
445 /* could happen due to race... do nothing.... */
446 break;
447 default:
448 rc = -EINVAL;
449 }
450 break;
451 case QED_IWARP_QP_STATE_TERMINATE:
452 case QED_IWARP_QP_STATE_CLOSING:
453 qp->iwarp_state = new_state;
454 break;
455 default:
456 break;
457 }
458
459 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n",
460 qp->icid,
461 iwarp_state_names[prev_iw_state],
462 iwarp_state_names[qp->iwarp_state],
463 internal ? "internal" : "");
464
465 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
466
467 if (modify_fw)
468 rc = qed_iwarp_modify_fw(p_hwfn, qp);
469
470 return rc;
471 }
472
473 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
474 {
475 struct qed_sp_init_data init_data;
476 struct qed_spq_entry *p_ent;
477 int rc;
478
479 /* Get SPQ entry */
480 memset(&init_data, 0, sizeof(init_data));
481 init_data.cid = qp->icid;
482 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
483 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
484
485 rc = qed_sp_init_request(p_hwfn, &p_ent,
486 IWARP_RAMROD_CMD_ID_DESTROY_QP,
487 p_hwfn->p_rdma_info->proto, &init_data);
488 if (rc)
489 return rc;
490
491 rc = qed_spq_post(p_hwfn, p_ent, NULL);
492
493 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc);
494
495 return rc;
496 }
497
498 static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn,
499 struct qed_iwarp_ep *ep,
500 bool remove_from_active_list)
501 {
502 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
503 sizeof(*ep->ep_buffer_virt),
504 ep->ep_buffer_virt, ep->ep_buffer_phys);
505
506 if (remove_from_active_list) {
507 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
508 list_del(&ep->list_entry);
509 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
510 }
511
512 if (ep->qp)
513 ep->qp->ep = NULL;
514
515 kfree(ep);
516 }
517
518 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
519 {
520 struct qed_iwarp_ep *ep = qp->ep;
521 int wait_count = 0;
522 int rc = 0;
523
524 if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) {
525 rc = qed_iwarp_modify_qp(p_hwfn, qp,
526 QED_IWARP_QP_STATE_ERROR, false);
527 if (rc)
528 return rc;
529 }
530
531 /* Make sure ep is closed before returning and freeing memory. */
532 if (ep) {
533 while (ep->state != QED_IWARP_EP_CLOSED && wait_count++ < 200)
534 msleep(100);
535
536 if (ep->state != QED_IWARP_EP_CLOSED)
537 DP_NOTICE(p_hwfn, "ep state close timeout state=%x\n",
538 ep->state);
539
540 qed_iwarp_destroy_ep(p_hwfn, ep, false);
541 }
542
543 rc = qed_iwarp_fw_destroy(p_hwfn, qp);
544
545 if (qp->shared_queue)
546 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
547 IWARP_SHARED_QUEUE_PAGE_SIZE,
548 qp->shared_queue, qp->shared_queue_phys_addr);
549
550 return rc;
551 }
552
553 static int
554 qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out)
555 {
556 struct qed_iwarp_ep *ep;
557 int rc;
558
559 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
560 if (!ep)
561 return -ENOMEM;
562
563 ep->state = QED_IWARP_EP_INIT;
564
565 ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
566 sizeof(*ep->ep_buffer_virt),
567 &ep->ep_buffer_phys,
568 GFP_KERNEL);
569 if (!ep->ep_buffer_virt) {
570 rc = -ENOMEM;
571 goto err;
572 }
573
574 ep->sig = QED_EP_SIG;
575
576 *ep_out = ep;
577
578 return 0;
579
580 err:
581 kfree(ep);
582 return rc;
583 }
584
585 static void
586 qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn,
587 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod)
588 {
589 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n",
590 p_tcp_ramrod->tcp.local_mac_addr_lo,
591 p_tcp_ramrod->tcp.local_mac_addr_mid,
592 p_tcp_ramrod->tcp.local_mac_addr_hi,
593 p_tcp_ramrod->tcp.remote_mac_addr_lo,
594 p_tcp_ramrod->tcp.remote_mac_addr_mid,
595 p_tcp_ramrod->tcp.remote_mac_addr_hi);
596
597 if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) {
598 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
599 "local_ip=%pI4h:%x, remote_ip=%pI4h:%x, vlan=%x\n",
600 p_tcp_ramrod->tcp.local_ip,
601 p_tcp_ramrod->tcp.local_port,
602 p_tcp_ramrod->tcp.remote_ip,
603 p_tcp_ramrod->tcp.remote_port,
604 p_tcp_ramrod->tcp.vlan_id);
605 } else {
606 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
607 "local_ip=%pI6:%x, remote_ip=%pI6:%x, vlan=%x\n",
608 p_tcp_ramrod->tcp.local_ip,
609 p_tcp_ramrod->tcp.local_port,
610 p_tcp_ramrod->tcp.remote_ip,
611 p_tcp_ramrod->tcp.remote_port,
612 p_tcp_ramrod->tcp.vlan_id);
613 }
614
615 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
616 "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n",
617 p_tcp_ramrod->tcp.flow_label,
618 p_tcp_ramrod->tcp.ttl,
619 p_tcp_ramrod->tcp.tos_or_tc,
620 p_tcp_ramrod->tcp.mss,
621 p_tcp_ramrod->tcp.rcv_wnd_scale,
622 p_tcp_ramrod->tcp.connect_mode,
623 p_tcp_ramrod->tcp.flags);
624
625 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n",
626 p_tcp_ramrod->tcp.syn_ip_payload_length,
627 p_tcp_ramrod->tcp.syn_phy_addr_lo,
628 p_tcp_ramrod->tcp.syn_phy_addr_hi);
629 }
630
631 static int
632 qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
633 {
634 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
635 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod;
636 struct tcp_offload_params_opt2 *tcp;
637 struct qed_sp_init_data init_data;
638 struct qed_spq_entry *p_ent;
639 dma_addr_t async_output_phys;
640 dma_addr_t in_pdata_phys;
641 u16 physical_q;
642 u8 tcp_flags;
643 int rc;
644 int i;
645
646 memset(&init_data, 0, sizeof(init_data));
647 init_data.cid = ep->tcp_cid;
648 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
649 if (ep->connect_mode == TCP_CONNECT_PASSIVE)
650 init_data.comp_mode = QED_SPQ_MODE_CB;
651 else
652 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
653
654 rc = qed_sp_init_request(p_hwfn, &p_ent,
655 IWARP_RAMROD_CMD_ID_TCP_OFFLOAD,
656 PROTOCOLID_IWARP, &init_data);
657 if (rc)
658 return rc;
659
660 p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload;
661
662 in_pdata_phys = ep->ep_buffer_phys +
663 offsetof(struct qed_iwarp_ep_memory, in_pdata);
664 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr,
665 in_pdata_phys);
666
667 p_tcp_ramrod->iwarp.incoming_ulp_buffer.len =
668 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
669
670 async_output_phys = ep->ep_buffer_phys +
671 offsetof(struct qed_iwarp_ep_memory, async_output);
672 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf,
673 async_output_phys);
674
675 p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
676 p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
677
678 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
679 p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q);
680 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
681 p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q);
682 p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev;
683
684 tcp = &p_tcp_ramrod->tcp;
685 qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi,
686 &tcp->remote_mac_addr_mid,
687 &tcp->remote_mac_addr_lo, ep->remote_mac_addr);
688 qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid,
689 &tcp->local_mac_addr_lo, ep->local_mac_addr);
690
691 tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan);
692
693 tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags;
694 tcp->flags = 0;
695 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN,
696 !!(tcp_flags & QED_IWARP_TS_EN));
697
698 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN,
699 !!(tcp_flags & QED_IWARP_DA_EN));
700
701 tcp->ip_version = ep->cm_info.ip_version;
702
703 for (i = 0; i < 4; i++) {
704 tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]);
705 tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]);
706 }
707
708 tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port);
709 tcp->local_port = cpu_to_le16(ep->cm_info.local_port);
710 tcp->mss = cpu_to_le16(ep->mss);
711 tcp->flow_label = 0;
712 tcp->ttl = 0x40;
713 tcp->tos_or_tc = 0;
714
715 tcp->max_rt_time = QED_IWARP_DEF_MAX_RT_TIME;
716 tcp->cwnd = QED_IWARP_DEF_CWND_FACTOR * tcp->mss;
717 tcp->ka_max_probe_cnt = QED_IWARP_DEF_KA_MAX_PROBE_CNT;
718 tcp->ka_timeout = QED_IWARP_DEF_KA_TIMEOUT;
719 tcp->ka_interval = QED_IWARP_DEF_KA_INTERVAL;
720
721 tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale;
722 tcp->connect_mode = ep->connect_mode;
723
724 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
725 tcp->syn_ip_payload_length =
726 cpu_to_le16(ep->syn_ip_payload_length);
727 tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr);
728 tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr);
729 }
730
731 qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod);
732
733 rc = qed_spq_post(p_hwfn, p_ent, NULL);
734
735 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
736 "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc);
737
738 return rc;
739 }
740
741 static void
742 qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
743 {
744 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
745 struct qed_iwarp_cm_event_params params;
746 struct mpa_v2_hdr *mpa_v2;
747 union async_output *async_data;
748 u16 mpa_ord, mpa_ird;
749 u8 mpa_hdr_size = 0;
750 u8 mpa_rev;
751
752 async_data = &ep->ep_buffer_virt->async_output;
753
754 mpa_rev = async_data->mpa_request.mpa_handshake_mode;
755 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
756 "private_data_len=%x handshake_mode=%x private_data=(%x)\n",
757 async_data->mpa_request.ulp_data_len,
758 mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata)));
759
760 if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
761 /* Read ord/ird values from private data buffer */
762 mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata;
763 mpa_hdr_size = sizeof(*mpa_v2);
764
765 mpa_ord = ntohs(mpa_v2->ord);
766 mpa_ird = ntohs(mpa_v2->ird);
767
768 /* Temprary store in cm_info incoming ord/ird requested, later
769 * replace with negotiated value during accept
770 */
771 ep->cm_info.ord = (u8)min_t(u16,
772 (mpa_ord & MPA_V2_IRD_ORD_MASK),
773 QED_IWARP_ORD_DEFAULT);
774
775 ep->cm_info.ird = (u8)min_t(u16,
776 (mpa_ird & MPA_V2_IRD_ORD_MASK),
777 QED_IWARP_IRD_DEFAULT);
778
779 /* Peer2Peer negotiation */
780 ep->rtr_type = MPA_RTR_TYPE_NONE;
781 if (mpa_ird & MPA_V2_PEER2PEER_MODEL) {
782 if (mpa_ord & MPA_V2_WRITE_RTR)
783 ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE;
784
785 if (mpa_ord & MPA_V2_READ_RTR)
786 ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ;
787
788 if (mpa_ird & MPA_V2_SEND_RTR)
789 ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND;
790
791 ep->rtr_type &= iwarp_info->rtr_type;
792
793 /* if we're left with no match send our capabilities */
794 if (ep->rtr_type == MPA_RTR_TYPE_NONE)
795 ep->rtr_type = iwarp_info->rtr_type;
796 }
797
798 ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
799 } else {
800 ep->cm_info.ord = QED_IWARP_ORD_DEFAULT;
801 ep->cm_info.ird = QED_IWARP_IRD_DEFAULT;
802 ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC;
803 }
804
805 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
806 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n",
807 mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type,
808 async_data->mpa_request.ulp_data_len, mpa_hdr_size);
809
810 /* Strip mpa v2 hdr from private data before sending to upper layer */
811 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size;
812
813 ep->cm_info.private_data_len = async_data->mpa_request.ulp_data_len -
814 mpa_hdr_size;
815
816 params.event = QED_IWARP_EVENT_MPA_REQUEST;
817 params.cm_info = &ep->cm_info;
818 params.ep_context = ep;
819 params.status = 0;
820
821 ep->state = QED_IWARP_EP_MPA_REQ_RCVD;
822 ep->event_cb(ep->cb_context, &params);
823 }
824
825 static int
826 qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
827 {
828 struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod;
829 struct qed_iwarp_info *iwarp_info;
830 struct qed_sp_init_data init_data;
831 dma_addr_t async_output_phys;
832 struct qed_spq_entry *p_ent;
833 dma_addr_t out_pdata_phys;
834 dma_addr_t in_pdata_phys;
835 struct qed_rdma_qp *qp;
836 bool reject;
837 int rc;
838
839 if (!ep)
840 return -EINVAL;
841
842 qp = ep->qp;
843 reject = !qp;
844
845 memset(&init_data, 0, sizeof(init_data));
846 init_data.cid = reject ? ep->tcp_cid : qp->icid;
847 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
848
849 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
850 init_data.comp_mode = QED_SPQ_MODE_CB;
851 else
852 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
853
854 rc = qed_sp_init_request(p_hwfn, &p_ent,
855 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD,
856 PROTOCOLID_IWARP, &init_data);
857 if (rc)
858 return rc;
859
860 p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload;
861 out_pdata_phys = ep->ep_buffer_phys +
862 offsetof(struct qed_iwarp_ep_memory, out_pdata);
863 DMA_REGPAIR_LE(p_mpa_ramrod->common.outgoing_ulp_buffer.addr,
864 out_pdata_phys);
865 p_mpa_ramrod->common.outgoing_ulp_buffer.len =
866 ep->cm_info.private_data_len;
867 p_mpa_ramrod->common.crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed;
868
869 p_mpa_ramrod->common.out_rq.ord = ep->cm_info.ord;
870 p_mpa_ramrod->common.out_rq.ird = ep->cm_info.ird;
871
872 p_mpa_ramrod->tcp_cid = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid;
873
874 in_pdata_phys = ep->ep_buffer_phys +
875 offsetof(struct qed_iwarp_ep_memory, in_pdata);
876 p_mpa_ramrod->tcp_connect_side = ep->connect_mode;
877 DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr,
878 in_pdata_phys);
879 p_mpa_ramrod->incoming_ulp_buffer.len =
880 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
881 async_output_phys = ep->ep_buffer_phys +
882 offsetof(struct qed_iwarp_ep_memory, async_output);
883 DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf,
884 async_output_phys);
885 p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
886 p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
887
888 if (!reject) {
889 DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr,
890 qp->shared_queue_phys_addr);
891 p_mpa_ramrod->stats_counter_id =
892 RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue;
893 } else {
894 p_mpa_ramrod->common.reject = 1;
895 }
896
897 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
898 p_mpa_ramrod->rcv_wnd = iwarp_info->rcv_wnd_size;
899 p_mpa_ramrod->mode = ep->mpa_rev;
900 SET_FIELD(p_mpa_ramrod->rtr_pref,
901 IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type);
902
903 ep->state = QED_IWARP_EP_MPA_OFFLOADED;
904 rc = qed_spq_post(p_hwfn, p_ent, NULL);
905 if (!reject)
906 ep->cid = qp->icid; /* Now they're migrated. */
907
908 DP_VERBOSE(p_hwfn,
909 QED_MSG_RDMA,
910 "QP(0x%x) EP(0x%x) MPA Offload rc = %d IRD=0x%x ORD=0x%x rtr_type=%d mpa_rev=%d reject=%d\n",
911 reject ? 0xffff : qp->icid,
912 ep->tcp_cid,
913 rc,
914 ep->cm_info.ird,
915 ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject);
916 return rc;
917 }
918
919 static void
920 qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
921 {
922 ep->state = QED_IWARP_EP_INIT;
923 if (ep->qp)
924 ep->qp->ep = NULL;
925 ep->qp = NULL;
926 memset(&ep->cm_info, 0, sizeof(ep->cm_info));
927
928 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
929 /* We don't care about the return code, it's ok if tcp_cid
930 * remains invalid...in this case we'll defer allocation
931 */
932 qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
933 }
934 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
935
936 list_del(&ep->list_entry);
937 list_add_tail(&ep->list_entry,
938 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
939
940 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
941 }
942
943 void
944 qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
945 {
946 struct mpa_v2_hdr *mpa_v2_params;
947 union async_output *async_data;
948 u16 mpa_ird, mpa_ord;
949 u8 mpa_data_size = 0;
950
951 if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) {
952 mpa_v2_params =
953 (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata);
954 mpa_data_size = sizeof(*mpa_v2_params);
955 mpa_ird = ntohs(mpa_v2_params->ird);
956 mpa_ord = ntohs(mpa_v2_params->ord);
957
958 ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK);
959 ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK);
960 }
961 async_data = &ep->ep_buffer_virt->async_output;
962
963 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size;
964 ep->cm_info.private_data_len = async_data->mpa_response.ulp_data_len -
965 mpa_data_size;
966 }
967
968 void
969 qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
970 {
971 struct qed_iwarp_cm_event_params params;
972
973 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
974 DP_NOTICE(p_hwfn,
975 "MPA reply event not expected on passive side!\n");
976 return;
977 }
978
979 params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY;
980
981 qed_iwarp_parse_private_data(p_hwfn, ep);
982
983 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
984 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
985 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
986
987 params.cm_info = &ep->cm_info;
988 params.ep_context = ep;
989 params.status = 0;
990
991 ep->mpa_reply_processed = true;
992
993 ep->event_cb(ep->cb_context, &params);
994 }
995
996 #define QED_IWARP_CONNECT_MODE_STRING(ep) \
997 ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active"
998
999 /* Called as a result of the event:
1000 * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE
1001 */
1002 static void
1003 qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn,
1004 struct qed_iwarp_ep *ep, u8 fw_return_code)
1005 {
1006 struct qed_iwarp_cm_event_params params;
1007
1008 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
1009 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
1010 else
1011 params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE;
1012
1013 if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed)
1014 qed_iwarp_parse_private_data(p_hwfn, ep);
1015
1016 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1017 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
1018 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
1019
1020 params.cm_info = &ep->cm_info;
1021
1022 params.ep_context = ep;
1023
1024 ep->state = QED_IWARP_EP_CLOSED;
1025
1026 switch (fw_return_code) {
1027 case RDMA_RETURN_OK:
1028 ep->qp->max_rd_atomic_req = ep->cm_info.ord;
1029 ep->qp->max_rd_atomic_resp = ep->cm_info.ird;
1030 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1);
1031 ep->state = QED_IWARP_EP_ESTABLISHED;
1032 params.status = 0;
1033 break;
1034 case IWARP_CONN_ERROR_MPA_TIMEOUT:
1035 DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n",
1036 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1037 params.status = -EBUSY;
1038 break;
1039 case IWARP_CONN_ERROR_MPA_ERROR_REJECT:
1040 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n",
1041 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1042 params.status = -ECONNREFUSED;
1043 break;
1044 case IWARP_CONN_ERROR_MPA_RST:
1045 DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n",
1046 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid,
1047 ep->tcp_cid);
1048 params.status = -ECONNRESET;
1049 break;
1050 case IWARP_CONN_ERROR_MPA_FIN:
1051 DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n",
1052 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1053 params.status = -ECONNREFUSED;
1054 break;
1055 case IWARP_CONN_ERROR_MPA_INSUF_IRD:
1056 DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n",
1057 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1058 params.status = -ECONNREFUSED;
1059 break;
1060 case IWARP_CONN_ERROR_MPA_RTR_MISMATCH:
1061 DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n",
1062 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1063 params.status = -ECONNREFUSED;
1064 break;
1065 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
1066 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
1067 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1068 params.status = -ECONNREFUSED;
1069 break;
1070 case IWARP_CONN_ERROR_MPA_LOCAL_ERROR:
1071 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n",
1072 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1073 params.status = -ECONNREFUSED;
1074 break;
1075 case IWARP_CONN_ERROR_MPA_TERMINATE:
1076 DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n",
1077 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1078 params.status = -ECONNREFUSED;
1079 break;
1080 default:
1081 params.status = -ECONNRESET;
1082 break;
1083 }
1084
1085 ep->event_cb(ep->cb_context, &params);
1086
1087 /* on passive side, if there is no associated QP (REJECT) we need to
1088 * return the ep to the pool, (in the regular case we add an element
1089 * in accept instead of this one.
1090 * In both cases we need to remove it from the ep_list.
1091 */
1092 if (fw_return_code != RDMA_RETURN_OK) {
1093 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1094 if ((ep->connect_mode == TCP_CONNECT_PASSIVE) &&
1095 (!ep->qp)) { /* Rejected */
1096 qed_iwarp_return_ep(p_hwfn, ep);
1097 } else {
1098 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1099 list_del(&ep->list_entry);
1100 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1101 }
1102 }
1103 }
1104
1105 static void
1106 qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn,
1107 struct qed_iwarp_ep *ep, u8 *mpa_data_size)
1108 {
1109 struct mpa_v2_hdr *mpa_v2_params;
1110 u16 mpa_ird, mpa_ord;
1111
1112 *mpa_data_size = 0;
1113 if (MPA_REV2(ep->mpa_rev)) {
1114 mpa_v2_params =
1115 (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata;
1116 *mpa_data_size = sizeof(*mpa_v2_params);
1117
1118 mpa_ird = (u16)ep->cm_info.ird;
1119 mpa_ord = (u16)ep->cm_info.ord;
1120
1121 if (ep->rtr_type != MPA_RTR_TYPE_NONE) {
1122 mpa_ird |= MPA_V2_PEER2PEER_MODEL;
1123
1124 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND)
1125 mpa_ird |= MPA_V2_SEND_RTR;
1126
1127 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE)
1128 mpa_ord |= MPA_V2_WRITE_RTR;
1129
1130 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ)
1131 mpa_ord |= MPA_V2_READ_RTR;
1132 }
1133
1134 mpa_v2_params->ird = htons(mpa_ird);
1135 mpa_v2_params->ord = htons(mpa_ord);
1136
1137 DP_VERBOSE(p_hwfn,
1138 QED_MSG_RDMA,
1139 "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n",
1140 mpa_v2_params->ird,
1141 mpa_v2_params->ord,
1142 *((u32 *)mpa_v2_params),
1143 mpa_ord & MPA_V2_IRD_ORD_MASK,
1144 mpa_ird & MPA_V2_IRD_ORD_MASK,
1145 !!(mpa_ird & MPA_V2_PEER2PEER_MODEL),
1146 !!(mpa_ird & MPA_V2_SEND_RTR),
1147 !!(mpa_ord & MPA_V2_WRITE_RTR),
1148 !!(mpa_ord & MPA_V2_READ_RTR));
1149 }
1150 }
1151
1152 int qed_iwarp_connect(void *rdma_cxt,
1153 struct qed_iwarp_connect_in *iparams,
1154 struct qed_iwarp_connect_out *oparams)
1155 {
1156 struct qed_hwfn *p_hwfn = rdma_cxt;
1157 struct qed_iwarp_info *iwarp_info;
1158 struct qed_iwarp_ep *ep;
1159 u8 mpa_data_size = 0;
1160 u8 ts_hdr_size = 0;
1161 u32 cid;
1162 int rc;
1163
1164 if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) ||
1165 (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) {
1166 DP_NOTICE(p_hwfn,
1167 "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1168 iparams->qp->icid, iparams->cm_info.ord,
1169 iparams->cm_info.ird);
1170
1171 return -EINVAL;
1172 }
1173
1174 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1175
1176 /* Allocate ep object */
1177 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1178 if (rc)
1179 return rc;
1180
1181 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1182 if (rc)
1183 goto err;
1184
1185 ep->tcp_cid = cid;
1186
1187 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1188 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
1189 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1190
1191 ep->qp = iparams->qp;
1192 ep->qp->ep = ep;
1193 ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr);
1194 ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr);
1195 memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info));
1196
1197 ep->cm_info.ord = iparams->cm_info.ord;
1198 ep->cm_info.ird = iparams->cm_info.ird;
1199
1200 ep->rtr_type = iwarp_info->rtr_type;
1201 if (!iwarp_info->peer2peer)
1202 ep->rtr_type = MPA_RTR_TYPE_NONE;
1203
1204 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0))
1205 ep->cm_info.ord = 1;
1206
1207 ep->mpa_rev = iwarp_info->mpa_rev;
1208
1209 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1210
1211 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1212 ep->cm_info.private_data_len = iparams->cm_info.private_data_len +
1213 mpa_data_size;
1214
1215 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1216 iparams->cm_info.private_data,
1217 iparams->cm_info.private_data_len);
1218
1219 if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN)
1220 ts_hdr_size = TIMESTAMP_HEADER_SIZE;
1221
1222 ep->mss = iparams->mss - ts_hdr_size;
1223 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
1224
1225 ep->event_cb = iparams->event_cb;
1226 ep->cb_context = iparams->cb_context;
1227 ep->connect_mode = TCP_CONNECT_ACTIVE;
1228
1229 oparams->ep_context = ep;
1230
1231 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
1232
1233 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n",
1234 iparams->qp->icid, ep->tcp_cid, rc);
1235
1236 if (rc) {
1237 qed_iwarp_destroy_ep(p_hwfn, ep, true);
1238 goto err;
1239 }
1240
1241 return rc;
1242 err:
1243 qed_iwarp_cid_cleaned(p_hwfn, cid);
1244
1245 return rc;
1246 }
1247
1248 static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn)
1249 {
1250 struct qed_iwarp_ep *ep = NULL;
1251 int rc;
1252
1253 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1254
1255 if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1256 DP_ERR(p_hwfn, "Ep list is empty\n");
1257 goto out;
1258 }
1259
1260 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1261 struct qed_iwarp_ep, list_entry);
1262
1263 /* in some cases we could have failed allocating a tcp cid when added
1264 * from accept / failure... retry now..this is not the common case.
1265 */
1266 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
1267 rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
1268
1269 /* if we fail we could look for another entry with a valid
1270 * tcp_cid, but since we don't expect to reach this anyway
1271 * it's not worth the handling
1272 */
1273 if (rc) {
1274 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1275 ep = NULL;
1276 goto out;
1277 }
1278 }
1279
1280 list_del(&ep->list_entry);
1281
1282 out:
1283 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1284 return ep;
1285 }
1286
1287 #define QED_IWARP_MAX_CID_CLEAN_TIME 100
1288 #define QED_IWARP_MAX_NO_PROGRESS_CNT 5
1289
1290 /* This function waits for all the bits of a bmap to be cleared, as long as
1291 * there is progress ( i.e. the number of bits left to be cleared decreases )
1292 * the function continues.
1293 */
1294 static int
1295 qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap)
1296 {
1297 int prev_weight = 0;
1298 int wait_count = 0;
1299 int weight = 0;
1300
1301 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1302 prev_weight = weight;
1303
1304 while (weight) {
1305 msleep(QED_IWARP_MAX_CID_CLEAN_TIME);
1306
1307 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1308
1309 if (prev_weight == weight) {
1310 wait_count++;
1311 } else {
1312 prev_weight = weight;
1313 wait_count = 0;
1314 }
1315
1316 if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) {
1317 DP_NOTICE(p_hwfn,
1318 "%s bitmap wait timed out (%d cids pending)\n",
1319 bmap->name, weight);
1320 return -EBUSY;
1321 }
1322 }
1323 return 0;
1324 }
1325
1326 static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn)
1327 {
1328 int rc;
1329 int i;
1330
1331 rc = qed_iwarp_wait_cid_map_cleared(p_hwfn,
1332 &p_hwfn->p_rdma_info->tcp_cid_map);
1333 if (rc)
1334 return rc;
1335
1336 /* Now free the tcp cids from the main cid map */
1337 for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++)
1338 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i);
1339
1340 /* Now wait for all cids to be completed */
1341 return qed_iwarp_wait_cid_map_cleared(p_hwfn,
1342 &p_hwfn->p_rdma_info->cid_map);
1343 }
1344
1345 static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn)
1346 {
1347 struct qed_iwarp_ep *ep;
1348
1349 while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1350 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1351
1352 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1353 struct qed_iwarp_ep, list_entry);
1354
1355 if (!ep) {
1356 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1357 break;
1358 }
1359 list_del(&ep->list_entry);
1360
1361 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1362
1363 if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID)
1364 qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid);
1365
1366 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1367 }
1368 }
1369
1370 static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init)
1371 {
1372 struct qed_iwarp_ep *ep;
1373 int rc = 0;
1374 int count;
1375 u32 cid;
1376 int i;
1377
1378 count = init ? QED_IWARP_PREALLOC_CNT : 1;
1379 for (i = 0; i < count; i++) {
1380 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1381 if (rc)
1382 return rc;
1383
1384 /* During initialization we allocate from the main pool,
1385 * afterwards we allocate only from the tcp_cid.
1386 */
1387 if (init) {
1388 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1389 if (rc)
1390 goto err;
1391 qed_iwarp_set_tcp_cid(p_hwfn, cid);
1392 } else {
1393 /* We don't care about the return code, it's ok if
1394 * tcp_cid remains invalid...in this case we'll
1395 * defer allocation
1396 */
1397 qed_iwarp_alloc_tcp_cid(p_hwfn, &cid);
1398 }
1399
1400 ep->tcp_cid = cid;
1401
1402 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1403 list_add_tail(&ep->list_entry,
1404 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
1405 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1406 }
1407
1408 return rc;
1409
1410 err:
1411 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1412
1413 return rc;
1414 }
1415
1416 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn)
1417 {
1418 int rc;
1419
1420 /* Allocate bitmap for tcp cid. These are used by passive side
1421 * to ensure it can allocate a tcp cid during dpc that was
1422 * pre-acquired and doesn't require dynamic allocation of ilt
1423 */
1424 rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
1425 QED_IWARP_PREALLOC_CNT, "TCP_CID");
1426 if (rc) {
1427 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1428 "Failed to allocate tcp cid, rc = %d\n", rc);
1429 return rc;
1430 }
1431
1432 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list);
1433 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1434
1435 rc = qed_iwarp_prealloc_ep(p_hwfn, true);
1436 if (rc)
1437 return rc;
1438
1439 return qed_ooo_alloc(p_hwfn);
1440 }
1441
1442 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn)
1443 {
1444 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1445
1446 qed_ooo_free(p_hwfn);
1447 qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1);
1448 kfree(iwarp_info->mpa_bufs);
1449 kfree(iwarp_info->partial_fpdus);
1450 kfree(iwarp_info->mpa_intermediate_buf);
1451 }
1452
1453 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams)
1454 {
1455 struct qed_hwfn *p_hwfn = rdma_cxt;
1456 struct qed_iwarp_ep *ep;
1457 u8 mpa_data_size = 0;
1458 int rc;
1459
1460 ep = iparams->ep_context;
1461 if (!ep) {
1462 DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n");
1463 return -EINVAL;
1464 }
1465
1466 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
1467 iparams->qp->icid, ep->tcp_cid);
1468
1469 if ((iparams->ord > QED_IWARP_ORD_DEFAULT) ||
1470 (iparams->ird > QED_IWARP_IRD_DEFAULT)) {
1471 DP_VERBOSE(p_hwfn,
1472 QED_MSG_RDMA,
1473 "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1474 iparams->qp->icid,
1475 ep->tcp_cid, iparams->ord, iparams->ord);
1476 return -EINVAL;
1477 }
1478
1479 qed_iwarp_prealloc_ep(p_hwfn, false);
1480
1481 ep->cb_context = iparams->cb_context;
1482 ep->qp = iparams->qp;
1483 ep->qp->ep = ep;
1484
1485 if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
1486 /* Negotiate ord/ird: if upperlayer requested ord larger than
1487 * ird advertised by remote, we need to decrease our ord
1488 */
1489 if (iparams->ord > ep->cm_info.ird)
1490 iparams->ord = ep->cm_info.ird;
1491
1492 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) &&
1493 (iparams->ird == 0))
1494 iparams->ird = 1;
1495 }
1496
1497 /* Update cm_info ord/ird to be negotiated values */
1498 ep->cm_info.ord = iparams->ord;
1499 ep->cm_info.ird = iparams->ird;
1500
1501 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1502
1503 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1504 ep->cm_info.private_data_len = iparams->private_data_len +
1505 mpa_data_size;
1506
1507 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1508 iparams->private_data, iparams->private_data_len);
1509
1510 rc = qed_iwarp_mpa_offload(p_hwfn, ep);
1511 if (rc)
1512 qed_iwarp_modify_qp(p_hwfn,
1513 iparams->qp, QED_IWARP_QP_STATE_ERROR, 1);
1514
1515 return rc;
1516 }
1517
1518 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams)
1519 {
1520 struct qed_hwfn *p_hwfn = rdma_cxt;
1521 struct qed_iwarp_ep *ep;
1522 u8 mpa_data_size = 0;
1523
1524 ep = iparams->ep_context;
1525 if (!ep) {
1526 DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n");
1527 return -EINVAL;
1528 }
1529
1530 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid);
1531
1532 ep->cb_context = iparams->cb_context;
1533 ep->qp = NULL;
1534
1535 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1536
1537 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1538 ep->cm_info.private_data_len = iparams->private_data_len +
1539 mpa_data_size;
1540
1541 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1542 iparams->private_data, iparams->private_data_len);
1543
1544 return qed_iwarp_mpa_offload(p_hwfn, ep);
1545 }
1546
1547 static void
1548 qed_iwarp_print_cm_info(struct qed_hwfn *p_hwfn,
1549 struct qed_iwarp_cm_info *cm_info)
1550 {
1551 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "ip_version = %d\n",
1552 cm_info->ip_version);
1553
1554 if (cm_info->ip_version == QED_TCP_IPV4)
1555 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1556 "remote_ip %pI4h:%x, local_ip %pI4h:%x vlan=%x\n",
1557 cm_info->remote_ip, cm_info->remote_port,
1558 cm_info->local_ip, cm_info->local_port,
1559 cm_info->vlan);
1560 else
1561 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1562 "remote_ip %pI6:%x, local_ip %pI6:%x vlan=%x\n",
1563 cm_info->remote_ip, cm_info->remote_port,
1564 cm_info->local_ip, cm_info->local_port,
1565 cm_info->vlan);
1566
1567 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1568 "private_data_len = %x ord = %d, ird = %d\n",
1569 cm_info->private_data_len, cm_info->ord, cm_info->ird);
1570 }
1571
1572 static int
1573 qed_iwarp_ll2_post_rx(struct qed_hwfn *p_hwfn,
1574 struct qed_iwarp_ll2_buff *buf, u8 handle)
1575 {
1576 int rc;
1577
1578 rc = qed_ll2_post_rx_buffer(p_hwfn, handle, buf->data_phys_addr,
1579 (u16)buf->buff_size, buf, 1);
1580 if (rc) {
1581 DP_NOTICE(p_hwfn,
1582 "Failed to repost rx buffer to ll2 rc = %d, handle=%d\n",
1583 rc, handle);
1584 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buf->buff_size,
1585 buf->data, buf->data_phys_addr);
1586 kfree(buf);
1587 }
1588
1589 return rc;
1590 }
1591
1592 static bool
1593 qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info)
1594 {
1595 struct qed_iwarp_ep *ep = NULL;
1596 bool found = false;
1597
1598 list_for_each_entry(ep,
1599 &p_hwfn->p_rdma_info->iwarp.ep_list,
1600 list_entry) {
1601 if ((ep->cm_info.local_port == cm_info->local_port) &&
1602 (ep->cm_info.remote_port == cm_info->remote_port) &&
1603 (ep->cm_info.vlan == cm_info->vlan) &&
1604 !memcmp(&ep->cm_info.local_ip, cm_info->local_ip,
1605 sizeof(cm_info->local_ip)) &&
1606 !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip,
1607 sizeof(cm_info->remote_ip))) {
1608 found = true;
1609 break;
1610 }
1611 }
1612
1613 if (found) {
1614 DP_NOTICE(p_hwfn,
1615 "SYN received on active connection - dropping\n");
1616 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1617
1618 return true;
1619 }
1620
1621 return false;
1622 }
1623
1624 static struct qed_iwarp_listener *
1625 qed_iwarp_get_listener(struct qed_hwfn *p_hwfn,
1626 struct qed_iwarp_cm_info *cm_info)
1627 {
1628 struct qed_iwarp_listener *listener = NULL;
1629 static const u32 ip_zero[4] = { 0, 0, 0, 0 };
1630 bool found = false;
1631
1632 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1633
1634 list_for_each_entry(listener,
1635 &p_hwfn->p_rdma_info->iwarp.listen_list,
1636 list_entry) {
1637 if (listener->port == cm_info->local_port) {
1638 if (!memcmp(listener->ip_addr,
1639 ip_zero, sizeof(ip_zero))) {
1640 found = true;
1641 break;
1642 }
1643
1644 if (!memcmp(listener->ip_addr,
1645 cm_info->local_ip,
1646 sizeof(cm_info->local_ip)) &&
1647 (listener->vlan == cm_info->vlan)) {
1648 found = true;
1649 break;
1650 }
1651 }
1652 }
1653
1654 if (found) {
1655 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener found = %p\n",
1656 listener);
1657 return listener;
1658 }
1659
1660 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener not found\n");
1661 return NULL;
1662 }
1663
1664 static int
1665 qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
1666 struct qed_iwarp_cm_info *cm_info,
1667 void *buf,
1668 u8 *remote_mac_addr,
1669 u8 *local_mac_addr,
1670 int *payload_len, int *tcp_start_offset)
1671 {
1672 struct vlan_ethhdr *vethh;
1673 bool vlan_valid = false;
1674 struct ipv6hdr *ip6h;
1675 struct ethhdr *ethh;
1676 struct tcphdr *tcph;
1677 struct iphdr *iph;
1678 int eth_hlen;
1679 int ip_hlen;
1680 int eth_type;
1681 int i;
1682
1683 ethh = buf;
1684 eth_type = ntohs(ethh->h_proto);
1685 if (eth_type == ETH_P_8021Q) {
1686 vlan_valid = true;
1687 vethh = (struct vlan_ethhdr *)ethh;
1688 cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK;
1689 eth_type = ntohs(vethh->h_vlan_encapsulated_proto);
1690 }
1691
1692 eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
1693
1694 ether_addr_copy(remote_mac_addr, ethh->h_source);
1695 ether_addr_copy(local_mac_addr, ethh->h_dest);
1696
1697 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n",
1698 eth_type, ethh->h_source);
1699
1700 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_hlen=%d destination mac: %pM\n",
1701 eth_hlen, ethh->h_dest);
1702
1703 iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen);
1704
1705 if (eth_type == ETH_P_IP) {
1706 cm_info->local_ip[0] = ntohl(iph->daddr);
1707 cm_info->remote_ip[0] = ntohl(iph->saddr);
1708 cm_info->ip_version = TCP_IPV4;
1709
1710 ip_hlen = (iph->ihl) * sizeof(u32);
1711 *payload_len = ntohs(iph->tot_len) - ip_hlen;
1712 } else if (eth_type == ETH_P_IPV6) {
1713 ip6h = (struct ipv6hdr *)iph;
1714 for (i = 0; i < 4; i++) {
1715 cm_info->local_ip[i] =
1716 ntohl(ip6h->daddr.in6_u.u6_addr32[i]);
1717 cm_info->remote_ip[i] =
1718 ntohl(ip6h->saddr.in6_u.u6_addr32[i]);
1719 }
1720 cm_info->ip_version = TCP_IPV6;
1721
1722 ip_hlen = sizeof(*ip6h);
1723 *payload_len = ntohs(ip6h->payload_len);
1724 } else {
1725 DP_NOTICE(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type);
1726 return -EINVAL;
1727 }
1728
1729 tcph = (struct tcphdr *)((u8 *)iph + ip_hlen);
1730
1731 if (!tcph->syn) {
1732 DP_NOTICE(p_hwfn,
1733 "Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n",
1734 iph->ihl, tcph->source, tcph->dest);
1735 return -EINVAL;
1736 }
1737
1738 cm_info->local_port = ntohs(tcph->dest);
1739 cm_info->remote_port = ntohs(tcph->source);
1740
1741 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1742
1743 *tcp_start_offset = eth_hlen + ip_hlen;
1744
1745 return 0;
1746 }
1747
1748 static struct qed_iwarp_fpdu *qed_iwarp_get_curr_fpdu(struct qed_hwfn *p_hwfn,
1749 u16 cid)
1750 {
1751 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1752 struct qed_iwarp_fpdu *partial_fpdu;
1753 u32 idx;
1754
1755 idx = cid - qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP);
1756 if (idx >= iwarp_info->max_num_partial_fpdus) {
1757 DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid,
1758 iwarp_info->max_num_partial_fpdus);
1759 return NULL;
1760 }
1761
1762 partial_fpdu = &iwarp_info->partial_fpdus[idx];
1763
1764 return partial_fpdu;
1765 }
1766
1767 enum qed_iwarp_mpa_pkt_type {
1768 QED_IWARP_MPA_PKT_PACKED,
1769 QED_IWARP_MPA_PKT_PARTIAL,
1770 QED_IWARP_MPA_PKT_UNALIGNED
1771 };
1772
1773 #define QED_IWARP_INVALID_FPDU_LENGTH 0xffff
1774 #define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2)
1775 #define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4)
1776
1777 /* Pad to multiple of 4 */
1778 #define QED_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) ALIGN(data_len, 4)
1779 #define QED_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \
1780 (QED_IWARP_PDU_DATA_LEN_WITH_PAD((_mpa_len) + \
1781 QED_IWARP_MPA_FPDU_LENGTH_SIZE) + \
1782 QED_IWARP_MPA_CRC32_DIGEST_SIZE)
1783
1784 /* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */
1785 #define QED_IWARP_MAX_BDS_PER_FPDU 3
1786
1787 char *pkt_type_str[] = {
1788 "QED_IWARP_MPA_PKT_PACKED",
1789 "QED_IWARP_MPA_PKT_PARTIAL",
1790 "QED_IWARP_MPA_PKT_UNALIGNED"
1791 };
1792
1793 static int
1794 qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
1795 struct qed_iwarp_fpdu *fpdu,
1796 struct qed_iwarp_ll2_buff *buf);
1797
1798 static enum qed_iwarp_mpa_pkt_type
1799 qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn,
1800 struct qed_iwarp_fpdu *fpdu,
1801 u16 tcp_payload_len, u8 *mpa_data)
1802 {
1803 enum qed_iwarp_mpa_pkt_type pkt_type;
1804 u16 mpa_len;
1805
1806 if (fpdu->incomplete_bytes) {
1807 pkt_type = QED_IWARP_MPA_PKT_UNALIGNED;
1808 goto out;
1809 }
1810
1811 /* special case of one byte remaining...
1812 * lower byte will be read next packet
1813 */
1814 if (tcp_payload_len == 1) {
1815 fpdu->fpdu_length = *mpa_data << BITS_PER_BYTE;
1816 pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
1817 goto out;
1818 }
1819
1820 mpa_len = ntohs(*((u16 *)(mpa_data)));
1821 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
1822
1823 if (fpdu->fpdu_length <= tcp_payload_len)
1824 pkt_type = QED_IWARP_MPA_PKT_PACKED;
1825 else
1826 pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
1827
1828 out:
1829 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1830 "MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n",
1831 pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len);
1832
1833 return pkt_type;
1834 }
1835
1836 static void
1837 qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf,
1838 struct qed_iwarp_fpdu *fpdu,
1839 struct unaligned_opaque_data *pkt_data,
1840 u16 tcp_payload_size, u8 placement_offset)
1841 {
1842 fpdu->mpa_buf = buf;
1843 fpdu->pkt_hdr = buf->data_phys_addr + placement_offset;
1844 fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset;
1845 fpdu->mpa_frag = buf->data_phys_addr + pkt_data->first_mpa_offset;
1846 fpdu->mpa_frag_virt = (u8 *)(buf->data) + pkt_data->first_mpa_offset;
1847
1848 if (tcp_payload_size == 1)
1849 fpdu->incomplete_bytes = QED_IWARP_INVALID_FPDU_LENGTH;
1850 else if (tcp_payload_size < fpdu->fpdu_length)
1851 fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size;
1852 else
1853 fpdu->incomplete_bytes = 0; /* complete fpdu */
1854
1855 fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes;
1856 }
1857
1858 static int
1859 qed_iwarp_cp_pkt(struct qed_hwfn *p_hwfn,
1860 struct qed_iwarp_fpdu *fpdu,
1861 struct unaligned_opaque_data *pkt_data,
1862 struct qed_iwarp_ll2_buff *buf, u16 tcp_payload_size)
1863 {
1864 u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf;
1865 int rc;
1866
1867 /* need to copy the data from the partial packet stored in fpdu
1868 * to the new buf, for this we also need to move the data currently
1869 * placed on the buf. The assumption is that the buffer is big enough
1870 * since fpdu_length <= mss, we use an intermediate buffer since
1871 * we may need to copy the new data to an overlapping location
1872 */
1873 if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) {
1874 DP_ERR(p_hwfn,
1875 "MPA ALIGN: Unexpected: buffer is not large enough for split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n",
1876 buf->buff_size, fpdu->mpa_frag_len,
1877 tcp_payload_size, fpdu->incomplete_bytes);
1878 return -EINVAL;
1879 }
1880
1881 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1882 "MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n",
1883 fpdu->mpa_frag_virt, fpdu->mpa_frag_len,
1884 (u8 *)(buf->data) + pkt_data->first_mpa_offset,
1885 tcp_payload_size);
1886
1887 memcpy(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len);
1888 memcpy(tmp_buf + fpdu->mpa_frag_len,
1889 (u8 *)(buf->data) + pkt_data->first_mpa_offset,
1890 tcp_payload_size);
1891
1892 rc = qed_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf);
1893 if (rc)
1894 return rc;
1895
1896 /* If we managed to post the buffer copy the data to the new buffer
1897 * o/w this will occur in the next round...
1898 */
1899 memcpy((u8 *)(buf->data), tmp_buf,
1900 fpdu->mpa_frag_len + tcp_payload_size);
1901
1902 fpdu->mpa_buf = buf;
1903 /* fpdu->pkt_hdr remains as is */
1904 /* fpdu->mpa_frag is overridden with new buf */
1905 fpdu->mpa_frag = buf->data_phys_addr;
1906 fpdu->mpa_frag_virt = buf->data;
1907 fpdu->mpa_frag_len += tcp_payload_size;
1908
1909 fpdu->incomplete_bytes -= tcp_payload_size;
1910
1911 DP_VERBOSE(p_hwfn,
1912 QED_MSG_RDMA,
1913 "MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n",
1914 buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size,
1915 fpdu->incomplete_bytes);
1916
1917 return 0;
1918 }
1919
1920 static void
1921 qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn,
1922 struct qed_iwarp_fpdu *fpdu, u8 *mpa_data)
1923 {
1924 u16 mpa_len;
1925
1926 /* Update incomplete packets if needed */
1927 if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) {
1928 /* Missing lower byte is now available */
1929 mpa_len = fpdu->fpdu_length | *mpa_data;
1930 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
1931 fpdu->mpa_frag_len = fpdu->fpdu_length;
1932 /* one byte of hdr */
1933 fpdu->incomplete_bytes = fpdu->fpdu_length - 1;
1934 DP_VERBOSE(p_hwfn,
1935 QED_MSG_RDMA,
1936 "MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n",
1937 mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes);
1938 }
1939 }
1940
1941 #define QED_IWARP_IS_RIGHT_EDGE(_curr_pkt) \
1942 (GET_FIELD((_curr_pkt)->flags, \
1943 UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE))
1944
1945 /* This function is used to recycle a buffer using the ll2 drop option. It
1946 * uses the mechanism to ensure that all buffers posted to tx before this one
1947 * were completed. The buffer sent here will be sent as a cookie in the tx
1948 * completion function and can then be reposted to rx chain when done. The flow
1949 * that requires this is the flow where a FPDU splits over more than 3 tcp
1950 * segments. In this case the driver needs to re-post a rx buffer instead of
1951 * the one received, but driver can't simply repost a buffer it copied from
1952 * as there is a case where the buffer was originally a packed FPDU, and is
1953 * partially posted to FW. Driver needs to ensure FW is done with it.
1954 */
1955 static int
1956 qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
1957 struct qed_iwarp_fpdu *fpdu,
1958 struct qed_iwarp_ll2_buff *buf)
1959 {
1960 struct qed_ll2_tx_pkt_info tx_pkt;
1961 u8 ll2_handle;
1962 int rc;
1963
1964 memset(&tx_pkt, 0, sizeof(tx_pkt));
1965 tx_pkt.num_of_bds = 1;
1966 tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP;
1967 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
1968 tx_pkt.first_frag = fpdu->pkt_hdr;
1969 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
1970 buf->piggy_buf = NULL;
1971 tx_pkt.cookie = buf;
1972
1973 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
1974
1975 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
1976 if (rc)
1977 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1978 "Can't drop packet rc=%d\n", rc);
1979
1980 DP_VERBOSE(p_hwfn,
1981 QED_MSG_RDMA,
1982 "MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n",
1983 (unsigned long int)tx_pkt.first_frag,
1984 tx_pkt.first_frag_len, buf, rc);
1985
1986 return rc;
1987 }
1988
1989 static int
1990 qed_iwarp_win_right_edge(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu)
1991 {
1992 struct qed_ll2_tx_pkt_info tx_pkt;
1993 u8 ll2_handle;
1994 int rc;
1995
1996 memset(&tx_pkt, 0, sizeof(tx_pkt));
1997 tx_pkt.num_of_bds = 1;
1998 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
1999 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
2000
2001 tx_pkt.first_frag = fpdu->pkt_hdr;
2002 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
2003 tx_pkt.enable_ip_cksum = true;
2004 tx_pkt.enable_l4_cksum = true;
2005 tx_pkt.calc_ip_len = true;
2006 /* vlan overload with enum iwarp_ll2_tx_queues */
2007 tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE;
2008
2009 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2010
2011 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2012 if (rc)
2013 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2014 "Can't send right edge rc=%d\n", rc);
2015 DP_VERBOSE(p_hwfn,
2016 QED_MSG_RDMA,
2017 "MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n",
2018 tx_pkt.num_of_bds,
2019 (unsigned long int)tx_pkt.first_frag,
2020 tx_pkt.first_frag_len, rc);
2021
2022 return rc;
2023 }
2024
2025 static int
2026 qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn,
2027 struct qed_iwarp_fpdu *fpdu,
2028 struct unaligned_opaque_data *curr_pkt,
2029 struct qed_iwarp_ll2_buff *buf,
2030 u16 tcp_payload_size, enum qed_iwarp_mpa_pkt_type pkt_type)
2031 {
2032 struct qed_ll2_tx_pkt_info tx_pkt;
2033 u8 ll2_handle;
2034 int rc;
2035
2036 memset(&tx_pkt, 0, sizeof(tx_pkt));
2037
2038 /* An unaligned packet means it's split over two tcp segments. So the
2039 * complete packet requires 3 bds, one for the header, one for the
2040 * part of the fpdu of the first tcp segment, and the last fragment
2041 * will point to the remainder of the fpdu. A packed pdu, requires only
2042 * two bds, one for the header and one for the data.
2043 */
2044 tx_pkt.num_of_bds = (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2;
2045 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2046 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; /* offset in words */
2047
2048 /* Send the mpa_buf only with the last fpdu (in case of packed) */
2049 if (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED ||
2050 tcp_payload_size <= fpdu->fpdu_length)
2051 tx_pkt.cookie = fpdu->mpa_buf;
2052
2053 tx_pkt.first_frag = fpdu->pkt_hdr;
2054 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
2055 tx_pkt.enable_ip_cksum = true;
2056 tx_pkt.enable_l4_cksum = true;
2057 tx_pkt.calc_ip_len = true;
2058 /* vlan overload with enum iwarp_ll2_tx_queues */
2059 tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE;
2060
2061 /* special case of unaligned packet and not packed, need to send
2062 * both buffers as cookie to release.
2063 */
2064 if (tcp_payload_size == fpdu->incomplete_bytes)
2065 fpdu->mpa_buf->piggy_buf = buf;
2066
2067 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2068
2069 /* Set first fragment to header */
2070 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2071 if (rc)
2072 goto out;
2073
2074 /* Set second fragment to first part of packet */
2075 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle,
2076 fpdu->mpa_frag,
2077 fpdu->mpa_frag_len);
2078 if (rc)
2079 goto out;
2080
2081 if (!fpdu->incomplete_bytes)
2082 goto out;
2083
2084 /* Set third fragment to second part of the packet */
2085 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn,
2086 ll2_handle,
2087 buf->data_phys_addr +
2088 curr_pkt->first_mpa_offset,
2089 fpdu->incomplete_bytes);
2090 out:
2091 DP_VERBOSE(p_hwfn,
2092 QED_MSG_RDMA,
2093 "MPA_ALIGN: Sent FPDU num_bds=%d first_frag_len=%x, mpa_frag_len=0x%x, incomplete_bytes:0x%x rc=%d\n",
2094 tx_pkt.num_of_bds,
2095 tx_pkt.first_frag_len,
2096 fpdu->mpa_frag_len,
2097 fpdu->incomplete_bytes, rc);
2098
2099 return rc;
2100 }
2101
2102 static void
2103 qed_iwarp_mpa_get_data(struct qed_hwfn *p_hwfn,
2104 struct unaligned_opaque_data *curr_pkt,
2105 u32 opaque_data0, u32 opaque_data1)
2106 {
2107 u64 opaque_data;
2108
2109 opaque_data = HILO_64(opaque_data1, opaque_data0);
2110 *curr_pkt = *((struct unaligned_opaque_data *)&opaque_data);
2111
2112 curr_pkt->first_mpa_offset = curr_pkt->tcp_payload_offset +
2113 le16_to_cpu(curr_pkt->first_mpa_offset);
2114 curr_pkt->cid = le32_to_cpu(curr_pkt->cid);
2115 }
2116
2117 /* This function is called when an unaligned or incomplete MPA packet arrives
2118 * driver needs to align the packet, perhaps using previous data and send
2119 * it down to FW once it is aligned.
2120 */
2121 static int
2122 qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn,
2123 struct qed_iwarp_ll2_mpa_buf *mpa_buf)
2124 {
2125 struct unaligned_opaque_data *curr_pkt = &mpa_buf->data;
2126 struct qed_iwarp_ll2_buff *buf = mpa_buf->ll2_buf;
2127 enum qed_iwarp_mpa_pkt_type pkt_type;
2128 struct qed_iwarp_fpdu *fpdu;
2129 int rc = -EINVAL;
2130 u8 *mpa_data;
2131
2132 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, curr_pkt->cid & 0xffff);
2133 if (!fpdu) { /* something corrupt with cid, post rx back */
2134 DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n",
2135 curr_pkt->cid);
2136 goto err;
2137 }
2138
2139 do {
2140 mpa_data = ((u8 *)(buf->data) + curr_pkt->first_mpa_offset);
2141
2142 pkt_type = qed_iwarp_mpa_classify(p_hwfn, fpdu,
2143 mpa_buf->tcp_payload_len,
2144 mpa_data);
2145
2146 switch (pkt_type) {
2147 case QED_IWARP_MPA_PKT_PARTIAL:
2148 qed_iwarp_init_fpdu(buf, fpdu,
2149 curr_pkt,
2150 mpa_buf->tcp_payload_len,
2151 mpa_buf->placement_offset);
2152
2153 if (!QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
2154 mpa_buf->tcp_payload_len = 0;
2155 break;
2156 }
2157
2158 rc = qed_iwarp_win_right_edge(p_hwfn, fpdu);
2159
2160 if (rc) {
2161 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2162 "Can't send FPDU:reset rc=%d\n", rc);
2163 memset(fpdu, 0, sizeof(*fpdu));
2164 break;
2165 }
2166
2167 mpa_buf->tcp_payload_len = 0;
2168 break;
2169 case QED_IWARP_MPA_PKT_PACKED:
2170 qed_iwarp_init_fpdu(buf, fpdu,
2171 curr_pkt,
2172 mpa_buf->tcp_payload_len,
2173 mpa_buf->placement_offset);
2174
2175 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
2176 mpa_buf->tcp_payload_len,
2177 pkt_type);
2178 if (rc) {
2179 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2180 "Can't send FPDU:reset rc=%d\n", rc);
2181 memset(fpdu, 0, sizeof(*fpdu));
2182 break;
2183 }
2184
2185 mpa_buf->tcp_payload_len -= fpdu->fpdu_length;
2186 curr_pkt->first_mpa_offset += fpdu->fpdu_length;
2187 break;
2188 case QED_IWARP_MPA_PKT_UNALIGNED:
2189 qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data);
2190 if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) {
2191 /* special handling of fpdu split over more
2192 * than 2 segments
2193 */
2194 if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
2195 rc = qed_iwarp_win_right_edge(p_hwfn,
2196 fpdu);
2197 /* packet will be re-processed later */
2198 if (rc)
2199 return rc;
2200 }
2201
2202 rc = qed_iwarp_cp_pkt(p_hwfn, fpdu, curr_pkt,
2203 buf,
2204 mpa_buf->tcp_payload_len);
2205 if (rc) /* packet will be re-processed later */
2206 return rc;
2207
2208 mpa_buf->tcp_payload_len = 0;
2209 break;
2210 }
2211
2212 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
2213 mpa_buf->tcp_payload_len,
2214 pkt_type);
2215 if (rc) {
2216 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2217 "Can't send FPDU:delay rc=%d\n", rc);
2218 /* don't reset fpdu -> we need it for next
2219 * classify
2220 */
2221 break;
2222 }
2223
2224 mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes;
2225 curr_pkt->first_mpa_offset += fpdu->incomplete_bytes;
2226 /* The framed PDU was sent - no more incomplete bytes */
2227 fpdu->incomplete_bytes = 0;
2228 break;
2229 }
2230 } while (mpa_buf->tcp_payload_len && !rc);
2231
2232 return rc;
2233
2234 err:
2235 qed_iwarp_ll2_post_rx(p_hwfn,
2236 buf,
2237 p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle);
2238 return rc;
2239 }
2240
2241 static void qed_iwarp_process_pending_pkts(struct qed_hwfn *p_hwfn)
2242 {
2243 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2244 struct qed_iwarp_ll2_mpa_buf *mpa_buf = NULL;
2245 int rc;
2246
2247 while (!list_empty(&iwarp_info->mpa_buf_pending_list)) {
2248 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_pending_list,
2249 struct qed_iwarp_ll2_mpa_buf,
2250 list_entry);
2251
2252 rc = qed_iwarp_process_mpa_pkt(p_hwfn, mpa_buf);
2253
2254 /* busy means break and continue processing later, don't
2255 * remove the buf from the pending list.
2256 */
2257 if (rc == -EBUSY)
2258 break;
2259
2260 list_del(&mpa_buf->list_entry);
2261 list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_list);
2262
2263 if (rc) { /* different error, don't continue */
2264 DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc);
2265 break;
2266 }
2267 }
2268 }
2269
2270 static void
2271 qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
2272 {
2273 struct qed_iwarp_ll2_mpa_buf *mpa_buf;
2274 struct qed_iwarp_info *iwarp_info;
2275 struct qed_hwfn *p_hwfn = cxt;
2276
2277 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2278 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_list,
2279 struct qed_iwarp_ll2_mpa_buf, list_entry);
2280 if (!mpa_buf) {
2281 DP_ERR(p_hwfn, "No free mpa buf\n");
2282 goto err;
2283 }
2284
2285 list_del(&mpa_buf->list_entry);
2286 qed_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data,
2287 data->opaque_data_0, data->opaque_data_1);
2288
2289 DP_VERBOSE(p_hwfn,
2290 QED_MSG_RDMA,
2291 "LL2 MPA CompRx payload_len:0x%x\tfirst_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n",
2292 data->length.packet_length, mpa_buf->data.first_mpa_offset,
2293 mpa_buf->data.tcp_payload_offset, mpa_buf->data.flags,
2294 mpa_buf->data.cid);
2295
2296 mpa_buf->ll2_buf = data->cookie;
2297 mpa_buf->tcp_payload_len = data->length.packet_length -
2298 mpa_buf->data.first_mpa_offset;
2299 mpa_buf->data.first_mpa_offset += data->u.placement_offset;
2300 mpa_buf->placement_offset = data->u.placement_offset;
2301
2302 list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_pending_list);
2303
2304 qed_iwarp_process_pending_pkts(p_hwfn);
2305 return;
2306 err:
2307 qed_iwarp_ll2_post_rx(p_hwfn, data->cookie,
2308 iwarp_info->ll2_mpa_handle);
2309 }
2310
2311 static void
2312 qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
2313 {
2314 struct qed_iwarp_ll2_buff *buf = data->cookie;
2315 struct qed_iwarp_listener *listener;
2316 struct qed_ll2_tx_pkt_info tx_pkt;
2317 struct qed_iwarp_cm_info cm_info;
2318 struct qed_hwfn *p_hwfn = cxt;
2319 u8 remote_mac_addr[ETH_ALEN];
2320 u8 local_mac_addr[ETH_ALEN];
2321 struct qed_iwarp_ep *ep;
2322 int tcp_start_offset;
2323 u8 ts_hdr_size = 0;
2324 u8 ll2_syn_handle;
2325 int payload_len;
2326 u32 hdr_size;
2327 int rc;
2328
2329 memset(&cm_info, 0, sizeof(cm_info));
2330 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
2331
2332 /* Check if packet was received with errors... */
2333 if (data->err_flags) {
2334 DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n",
2335 data->err_flags);
2336 goto err;
2337 }
2338
2339 if (GET_FIELD(data->parse_flags,
2340 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) &&
2341 GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) {
2342 DP_NOTICE(p_hwfn, "Syn packet received with checksum error\n");
2343 goto err;
2344 }
2345
2346 rc = qed_iwarp_parse_rx_pkt(p_hwfn, &cm_info, (u8 *)(buf->data) +
2347 data->u.placement_offset, remote_mac_addr,
2348 local_mac_addr, &payload_len,
2349 &tcp_start_offset);
2350 if (rc)
2351 goto err;
2352
2353 /* Check if there is a listener for this 4-tuple+vlan */
2354 listener = qed_iwarp_get_listener(p_hwfn, &cm_info);
2355 if (!listener) {
2356 DP_VERBOSE(p_hwfn,
2357 QED_MSG_RDMA,
2358 "SYN received on tuple not listened on parse_flags=%d packet len=%d\n",
2359 data->parse_flags, data->length.packet_length);
2360
2361 memset(&tx_pkt, 0, sizeof(tx_pkt));
2362 tx_pkt.num_of_bds = 1;
2363 tx_pkt.vlan = data->vlan;
2364
2365 if (GET_FIELD(data->parse_flags,
2366 PARSING_AND_ERR_FLAGS_TAG8021QEXIST))
2367 SET_FIELD(tx_pkt.bd_flags,
2368 CORE_TX_BD_DATA_VLAN_INSERTION, 1);
2369
2370 tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2;
2371 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2372 tx_pkt.first_frag = buf->data_phys_addr +
2373 data->u.placement_offset;
2374 tx_pkt.first_frag_len = data->length.packet_length;
2375 tx_pkt.cookie = buf;
2376
2377 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_syn_handle,
2378 &tx_pkt, true);
2379
2380 if (rc) {
2381 DP_NOTICE(p_hwfn,
2382 "Can't post SYN back to chip rc=%d\n", rc);
2383 goto err;
2384 }
2385 return;
2386 }
2387
2388 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n");
2389 /* There may be an open ep on this connection if this is a syn
2390 * retrasnmit... need to make sure there isn't...
2391 */
2392 if (qed_iwarp_ep_exists(p_hwfn, &cm_info))
2393 goto err;
2394
2395 ep = qed_iwarp_get_free_ep(p_hwfn);
2396 if (!ep)
2397 goto err;
2398
2399 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2400 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
2401 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2402
2403 ether_addr_copy(ep->remote_mac_addr, remote_mac_addr);
2404 ether_addr_copy(ep->local_mac_addr, local_mac_addr);
2405
2406 memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info));
2407
2408 if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN)
2409 ts_hdr_size = TIMESTAMP_HEADER_SIZE;
2410
2411 hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60) +
2412 ts_hdr_size;
2413 ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size;
2414 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
2415
2416 ep->event_cb = listener->event_cb;
2417 ep->cb_context = listener->cb_context;
2418 ep->connect_mode = TCP_CONNECT_PASSIVE;
2419
2420 ep->syn = buf;
2421 ep->syn_ip_payload_length = (u16)payload_len;
2422 ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset +
2423 tcp_start_offset;
2424
2425 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
2426 if (rc) {
2427 qed_iwarp_return_ep(p_hwfn, ep);
2428 goto err;
2429 }
2430
2431 return;
2432 err:
2433 qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle);
2434 }
2435
2436 static void qed_iwarp_ll2_rel_rx_pkt(void *cxt, u8 connection_handle,
2437 void *cookie, dma_addr_t rx_buf_addr,
2438 bool b_last_packet)
2439 {
2440 struct qed_iwarp_ll2_buff *buffer = cookie;
2441 struct qed_hwfn *p_hwfn = cxt;
2442
2443 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
2444 buffer->data, buffer->data_phys_addr);
2445 kfree(buffer);
2446 }
2447
2448 static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle,
2449 void *cookie, dma_addr_t first_frag_addr,
2450 bool b_last_fragment, bool b_last_packet)
2451 {
2452 struct qed_iwarp_ll2_buff *buffer = cookie;
2453 struct qed_iwarp_ll2_buff *piggy;
2454 struct qed_hwfn *p_hwfn = cxt;
2455
2456 if (!buffer) /* can happen in packed mpa unaligned... */
2457 return;
2458
2459 /* this was originally an rx packet, post it back */
2460 piggy = buffer->piggy_buf;
2461 if (piggy) {
2462 buffer->piggy_buf = NULL;
2463 qed_iwarp_ll2_post_rx(p_hwfn, piggy, connection_handle);
2464 }
2465
2466 qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle);
2467
2468 if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle)
2469 qed_iwarp_process_pending_pkts(p_hwfn);
2470
2471 return;
2472 }
2473
2474 static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle,
2475 void *cookie, dma_addr_t first_frag_addr,
2476 bool b_last_fragment, bool b_last_packet)
2477 {
2478 struct qed_iwarp_ll2_buff *buffer = cookie;
2479 struct qed_hwfn *p_hwfn = cxt;
2480
2481 if (!buffer)
2482 return;
2483
2484 if (buffer->piggy_buf) {
2485 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
2486 buffer->piggy_buf->buff_size,
2487 buffer->piggy_buf->data,
2488 buffer->piggy_buf->data_phys_addr);
2489
2490 kfree(buffer->piggy_buf);
2491 }
2492
2493 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
2494 buffer->data, buffer->data_phys_addr);
2495
2496 kfree(buffer);
2497 }
2498
2499 /* The only slowpath for iwarp ll2 is unalign flush. When this completion
2500 * is received, need to reset the FPDU.
2501 */
2502 void
2503 qed_iwarp_ll2_slowpath(void *cxt,
2504 u8 connection_handle,
2505 u32 opaque_data_0, u32 opaque_data_1)
2506 {
2507 struct unaligned_opaque_data unalign_data;
2508 struct qed_hwfn *p_hwfn = cxt;
2509 struct qed_iwarp_fpdu *fpdu;
2510
2511 qed_iwarp_mpa_get_data(p_hwfn, &unalign_data,
2512 opaque_data_0, opaque_data_1);
2513
2514 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "(0x%x) Flush fpdu\n",
2515 unalign_data.cid);
2516
2517 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)unalign_data.cid);
2518 if (fpdu)
2519 memset(fpdu, 0, sizeof(*fpdu));
2520 }
2521
2522 static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
2523 {
2524 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2525 int rc = 0;
2526
2527 if (iwarp_info->ll2_syn_handle != QED_IWARP_HANDLE_INVAL) {
2528 rc = qed_ll2_terminate_connection(p_hwfn,
2529 iwarp_info->ll2_syn_handle);
2530 if (rc)
2531 DP_INFO(p_hwfn, "Failed to terminate syn connection\n");
2532
2533 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_syn_handle);
2534 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
2535 }
2536
2537 if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) {
2538 rc = qed_ll2_terminate_connection(p_hwfn,
2539 iwarp_info->ll2_ooo_handle);
2540 if (rc)
2541 DP_INFO(p_hwfn, "Failed to terminate ooo connection\n");
2542
2543 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
2544 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
2545 }
2546
2547 if (iwarp_info->ll2_mpa_handle != QED_IWARP_HANDLE_INVAL) {
2548 rc = qed_ll2_terminate_connection(p_hwfn,
2549 iwarp_info->ll2_mpa_handle);
2550 if (rc)
2551 DP_INFO(p_hwfn, "Failed to terminate mpa connection\n");
2552
2553 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
2554 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
2555 }
2556
2557 qed_llh_remove_mac_filter(p_hwfn,
2558 p_ptt, p_hwfn->p_rdma_info->iwarp.mac_addr);
2559 return rc;
2560 }
2561
2562 static int
2563 qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn,
2564 int num_rx_bufs, int buff_size, u8 ll2_handle)
2565 {
2566 struct qed_iwarp_ll2_buff *buffer;
2567 int rc = 0;
2568 int i;
2569
2570 for (i = 0; i < num_rx_bufs; i++) {
2571 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
2572 if (!buffer) {
2573 rc = -ENOMEM;
2574 break;
2575 }
2576
2577 buffer->data = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
2578 buff_size,
2579 &buffer->data_phys_addr,
2580 GFP_KERNEL);
2581 if (!buffer->data) {
2582 kfree(buffer);
2583 rc = -ENOMEM;
2584 break;
2585 }
2586
2587 buffer->buff_size = buff_size;
2588 rc = qed_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle);
2589 if (rc)
2590 /* buffers will be deallocated by qed_ll2 */
2591 break;
2592 }
2593 return rc;
2594 }
2595
2596 #define QED_IWARP_MAX_BUF_SIZE(mtu) \
2597 ALIGN((mtu) + ETH_HLEN + 2 * VLAN_HLEN + 2 + ETH_CACHE_LINE_SIZE, \
2598 ETH_CACHE_LINE_SIZE)
2599
2600 static int
2601 qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
2602 struct qed_rdma_start_in_params *params,
2603 struct qed_ptt *p_ptt)
2604 {
2605 struct qed_iwarp_info *iwarp_info;
2606 struct qed_ll2_acquire_data data;
2607 struct qed_ll2_cbs cbs;
2608 u32 mpa_buff_size;
2609 u16 n_ooo_bufs;
2610 int rc = 0;
2611 int i;
2612
2613 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2614 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
2615 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
2616 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
2617
2618 iwarp_info->max_mtu = params->max_mtu;
2619
2620 ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr);
2621
2622 rc = qed_llh_add_mac_filter(p_hwfn, p_ptt, params->mac_addr);
2623 if (rc)
2624 return rc;
2625
2626 /* Start SYN connection */
2627 cbs.rx_comp_cb = qed_iwarp_ll2_comp_syn_pkt;
2628 cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt;
2629 cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt;
2630 cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt;
2631 cbs.cookie = p_hwfn;
2632
2633 memset(&data, 0, sizeof(data));
2634 data.input.conn_type = QED_LL2_TYPE_IWARP;
2635 data.input.mtu = QED_IWARP_MAX_SYN_PKT_SIZE;
2636 data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE;
2637 data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE;
2638 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
2639 data.input.tx_tc = PKT_LB_TC;
2640 data.input.tx_dest = QED_LL2_TX_DEST_LB;
2641 data.p_connection_handle = &iwarp_info->ll2_syn_handle;
2642 data.cbs = &cbs;
2643
2644 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2645 if (rc) {
2646 DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n");
2647 qed_llh_remove_mac_filter(p_hwfn, p_ptt, params->mac_addr);
2648 return rc;
2649 }
2650
2651 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle);
2652 if (rc) {
2653 DP_NOTICE(p_hwfn, "Failed to establish LL2 connection\n");
2654 goto err;
2655 }
2656
2657 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
2658 QED_IWARP_LL2_SYN_RX_SIZE,
2659 QED_IWARP_MAX_SYN_PKT_SIZE,
2660 iwarp_info->ll2_syn_handle);
2661 if (rc)
2662 goto err;
2663
2664 /* Start OOO connection */
2665 data.input.conn_type = QED_LL2_TYPE_OOO;
2666 data.input.mtu = params->max_mtu;
2667
2668 n_ooo_bufs = (QED_IWARP_MAX_OOO * QED_IWARP_RCV_WND_SIZE_DEF) /
2669 iwarp_info->max_mtu;
2670 n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE);
2671
2672 data.input.rx_num_desc = n_ooo_bufs;
2673 data.input.rx_num_ooo_buffers = n_ooo_bufs;
2674
2675 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
2676 data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE;
2677 data.p_connection_handle = &iwarp_info->ll2_ooo_handle;
2678
2679 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2680 if (rc)
2681 goto err;
2682
2683 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
2684 if (rc)
2685 goto err;
2686
2687 /* Start Unaligned MPA connection */
2688 cbs.rx_comp_cb = qed_iwarp_ll2_comp_mpa_pkt;
2689 cbs.slowpath_cb = qed_iwarp_ll2_slowpath;
2690
2691 memset(&data, 0, sizeof(data));
2692 data.input.conn_type = QED_LL2_TYPE_IWARP;
2693 data.input.mtu = params->max_mtu;
2694 /* FW requires that once a packet arrives OOO, it must have at
2695 * least 2 rx buffers available on the unaligned connection
2696 * for handling the case that it is a partial fpdu.
2697 */
2698 data.input.rx_num_desc = n_ooo_bufs * 2;
2699 data.input.tx_num_desc = data.input.rx_num_desc;
2700 data.input.tx_max_bds_per_packet = QED_IWARP_MAX_BDS_PER_FPDU;
2701 data.p_connection_handle = &iwarp_info->ll2_mpa_handle;
2702 data.input.secondary_queue = true;
2703 data.cbs = &cbs;
2704
2705 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2706 if (rc)
2707 goto err;
2708
2709 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
2710 if (rc)
2711 goto err;
2712
2713 mpa_buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu);
2714 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
2715 data.input.rx_num_desc,
2716 mpa_buff_size,
2717 iwarp_info->ll2_mpa_handle);
2718 if (rc)
2719 goto err;
2720
2721 iwarp_info->partial_fpdus = kcalloc((u16)p_hwfn->p_rdma_info->num_qps,
2722 sizeof(*iwarp_info->partial_fpdus),
2723 GFP_KERNEL);
2724 if (!iwarp_info->partial_fpdus)
2725 goto err;
2726
2727 iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps;
2728
2729 iwarp_info->mpa_intermediate_buf = kzalloc(mpa_buff_size, GFP_KERNEL);
2730 if (!iwarp_info->mpa_intermediate_buf)
2731 goto err;
2732
2733 /* The mpa_bufs array serves for pending RX packets received on the
2734 * mpa ll2 that don't have place on the tx ring and require later
2735 * processing. We can't fail on allocation of such a struct therefore
2736 * we allocate enough to take care of all rx packets
2737 */
2738 iwarp_info->mpa_bufs = kcalloc(data.input.rx_num_desc,
2739 sizeof(*iwarp_info->mpa_bufs),
2740 GFP_KERNEL);
2741 if (!iwarp_info->mpa_bufs)
2742 goto err;
2743
2744 INIT_LIST_HEAD(&iwarp_info->mpa_buf_pending_list);
2745 INIT_LIST_HEAD(&iwarp_info->mpa_buf_list);
2746 for (i = 0; i < data.input.rx_num_desc; i++)
2747 list_add_tail(&iwarp_info->mpa_bufs[i].list_entry,
2748 &iwarp_info->mpa_buf_list);
2749 return rc;
2750 err:
2751 qed_iwarp_ll2_stop(p_hwfn, p_ptt);
2752
2753 return rc;
2754 }
2755
2756 int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
2757 struct qed_rdma_start_in_params *params)
2758 {
2759 struct qed_iwarp_info *iwarp_info;
2760 u32 rcv_wnd_size;
2761
2762 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2763
2764 iwarp_info->tcp_flags = QED_IWARP_TS_EN;
2765 rcv_wnd_size = QED_IWARP_RCV_WND_SIZE_DEF;
2766
2767 /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */
2768 iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) -
2769 ilog2(QED_IWARP_RCV_WND_SIZE_MIN);
2770 iwarp_info->rcv_wnd_size = rcv_wnd_size >> iwarp_info->rcv_wnd_scale;
2771 iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED;
2772 iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
2773
2774 iwarp_info->peer2peer = QED_IWARP_PARAM_P2P;
2775
2776 iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND |
2777 MPA_RTR_TYPE_ZERO_WRITE |
2778 MPA_RTR_TYPE_ZERO_READ;
2779
2780 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock);
2781 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list);
2782 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list);
2783
2784 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP,
2785 qed_iwarp_async_event);
2786 qed_ooo_setup(p_hwfn);
2787
2788 return qed_iwarp_ll2_start(p_hwfn, params, p_ptt);
2789 }
2790
2791 int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
2792 {
2793 int rc;
2794
2795 qed_iwarp_free_prealloc_ep(p_hwfn);
2796 rc = qed_iwarp_wait_for_all_cids(p_hwfn);
2797 if (rc)
2798 return rc;
2799
2800 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP);
2801
2802 return qed_iwarp_ll2_stop(p_hwfn, p_ptt);
2803 }
2804
2805 void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn,
2806 struct qed_iwarp_ep *ep, u8 fw_return_code)
2807 {
2808 struct qed_iwarp_cm_event_params params;
2809
2810 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_ERROR, true);
2811
2812 params.event = QED_IWARP_EVENT_CLOSE;
2813 params.ep_context = ep;
2814 params.cm_info = &ep->cm_info;
2815 params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ?
2816 0 : -ECONNRESET;
2817
2818 ep->state = QED_IWARP_EP_CLOSED;
2819 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2820 list_del(&ep->list_entry);
2821 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2822
2823 ep->event_cb(ep->cb_context, &params);
2824 }
2825
2826 void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn,
2827 struct qed_iwarp_ep *ep, int fw_ret_code)
2828 {
2829 struct qed_iwarp_cm_event_params params;
2830 bool event_cb = false;
2831
2832 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n",
2833 ep->cid, fw_ret_code);
2834
2835 switch (fw_ret_code) {
2836 case IWARP_EXCEPTION_DETECTED_LLP_CLOSED:
2837 params.status = 0;
2838 params.event = QED_IWARP_EVENT_DISCONNECT;
2839 event_cb = true;
2840 break;
2841 case IWARP_EXCEPTION_DETECTED_LLP_RESET:
2842 params.status = -ECONNRESET;
2843 params.event = QED_IWARP_EVENT_DISCONNECT;
2844 event_cb = true;
2845 break;
2846 case IWARP_EXCEPTION_DETECTED_RQ_EMPTY:
2847 params.event = QED_IWARP_EVENT_RQ_EMPTY;
2848 event_cb = true;
2849 break;
2850 case IWARP_EXCEPTION_DETECTED_IRQ_FULL:
2851 params.event = QED_IWARP_EVENT_IRQ_FULL;
2852 event_cb = true;
2853 break;
2854 case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT:
2855 params.event = QED_IWARP_EVENT_LLP_TIMEOUT;
2856 event_cb = true;
2857 break;
2858 case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR:
2859 params.event = QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR;
2860 event_cb = true;
2861 break;
2862 case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW:
2863 params.event = QED_IWARP_EVENT_CQ_OVERFLOW;
2864 event_cb = true;
2865 break;
2866 case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC:
2867 params.event = QED_IWARP_EVENT_QP_CATASTROPHIC;
2868 event_cb = true;
2869 break;
2870 case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR:
2871 params.event = QED_IWARP_EVENT_LOCAL_ACCESS_ERROR;
2872 event_cb = true;
2873 break;
2874 case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR:
2875 params.event = QED_IWARP_EVENT_REMOTE_OPERATION_ERROR;
2876 event_cb = true;
2877 break;
2878 case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED:
2879 params.event = QED_IWARP_EVENT_TERMINATE_RECEIVED;
2880 event_cb = true;
2881 break;
2882 default:
2883 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2884 "Unhandled exception received...fw_ret_code=%d\n",
2885 fw_ret_code);
2886 break;
2887 }
2888
2889 if (event_cb) {
2890 params.ep_context = ep;
2891 params.cm_info = &ep->cm_info;
2892 ep->event_cb(ep->cb_context, &params);
2893 }
2894 }
2895
2896 static void
2897 qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn,
2898 struct qed_iwarp_ep *ep, u8 fw_return_code)
2899 {
2900 struct qed_iwarp_cm_event_params params;
2901
2902 memset(&params, 0, sizeof(params));
2903 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
2904 params.ep_context = ep;
2905 params.cm_info = &ep->cm_info;
2906 ep->state = QED_IWARP_EP_CLOSED;
2907
2908 switch (fw_return_code) {
2909 case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET:
2910 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2911 "%s(0x%x) TCP connect got invalid packet\n",
2912 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2913 params.status = -ECONNRESET;
2914 break;
2915 case IWARP_CONN_ERROR_TCP_CONNECTION_RST:
2916 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2917 "%s(0x%x) TCP Connection Reset\n",
2918 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2919 params.status = -ECONNRESET;
2920 break;
2921 case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT:
2922 DP_NOTICE(p_hwfn, "%s(0x%x) TCP timeout\n",
2923 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2924 params.status = -EBUSY;
2925 break;
2926 case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER:
2927 DP_NOTICE(p_hwfn, "%s(0x%x) MPA not supported VER\n",
2928 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2929 params.status = -ECONNREFUSED;
2930 break;
2931 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
2932 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
2933 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2934 params.status = -ECONNRESET;
2935 break;
2936 default:
2937 DP_ERR(p_hwfn,
2938 "%s(0x%x) Unexpected return code tcp connect: %d\n",
2939 QED_IWARP_CONNECT_MODE_STRING(ep),
2940 ep->tcp_cid, fw_return_code);
2941 params.status = -ECONNRESET;
2942 break;
2943 }
2944
2945 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
2946 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
2947 qed_iwarp_return_ep(p_hwfn, ep);
2948 } else {
2949 ep->event_cb(ep->cb_context, &params);
2950 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2951 list_del(&ep->list_entry);
2952 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2953 }
2954 }
2955
2956 void
2957 qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn,
2958 struct qed_iwarp_ep *ep, u8 fw_return_code)
2959 {
2960 u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
2961
2962 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
2963 /* Done with the SYN packet, post back to ll2 rx */
2964 qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle);
2965
2966 ep->syn = NULL;
2967
2968 /* If connect failed - upper layer doesn't know about it */
2969 if (fw_return_code == RDMA_RETURN_OK)
2970 qed_iwarp_mpa_received(p_hwfn, ep);
2971 else
2972 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
2973 fw_return_code);
2974 } else {
2975 if (fw_return_code == RDMA_RETURN_OK)
2976 qed_iwarp_mpa_offload(p_hwfn, ep);
2977 else
2978 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
2979 fw_return_code);
2980 }
2981 }
2982
2983 static inline bool
2984 qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
2985 {
2986 if (!ep || (ep->sig != QED_EP_SIG)) {
2987 DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep);
2988 return false;
2989 }
2990
2991 return true;
2992 }
2993
2994 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
2995 u8 fw_event_code, u16 echo,
2996 union event_ring_data *data,
2997 u8 fw_return_code)
2998 {
2999 struct regpair *fw_handle = &data->rdma_data.async_handle;
3000 struct qed_iwarp_ep *ep = NULL;
3001 u16 cid;
3002
3003 ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi,
3004 fw_handle->lo);
3005
3006 switch (fw_event_code) {
3007 case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE:
3008 /* Async completion after TCP 3-way handshake */
3009 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3010 return -EINVAL;
3011 DP_VERBOSE(p_hwfn,
3012 QED_MSG_RDMA,
3013 "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n",
3014 ep->tcp_cid, fw_return_code);
3015 qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code);
3016 break;
3017 case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED:
3018 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3019 return -EINVAL;
3020 DP_VERBOSE(p_hwfn,
3021 QED_MSG_RDMA,
3022 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n",
3023 ep->cid, fw_return_code);
3024 qed_iwarp_exception_received(p_hwfn, ep, fw_return_code);
3025 break;
3026 case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE:
3027 /* Async completion for Close Connection ramrod */
3028 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3029 return -EINVAL;
3030 DP_VERBOSE(p_hwfn,
3031 QED_MSG_RDMA,
3032 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n",
3033 ep->cid, fw_return_code);
3034 qed_iwarp_qp_in_error(p_hwfn, ep, fw_return_code);
3035 break;
3036 case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED:
3037 /* Async event for active side only */
3038 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3039 return -EINVAL;
3040 DP_VERBOSE(p_hwfn,
3041 QED_MSG_RDMA,
3042 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n",
3043 ep->cid, fw_return_code);
3044 qed_iwarp_mpa_reply_arrived(p_hwfn, ep);
3045 break;
3046 case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE:
3047 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3048 return -EINVAL;
3049 DP_VERBOSE(p_hwfn,
3050 QED_MSG_RDMA,
3051 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n",
3052 ep->cid, fw_return_code);
3053 qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code);
3054 break;
3055 case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED:
3056 cid = (u16)le32_to_cpu(fw_handle->lo);
3057 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
3058 "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid);
3059 qed_iwarp_cid_cleaned(p_hwfn, cid);
3060
3061 break;
3062 case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW:
3063 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n");
3064
3065 p_hwfn->p_rdma_info->events.affiliated_event(
3066 p_hwfn->p_rdma_info->events.context,
3067 QED_IWARP_EVENT_CQ_OVERFLOW,
3068 (void *)fw_handle);
3069 break;
3070 default:
3071 DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n",
3072 fw_event_code);
3073 return -EINVAL;
3074 }
3075 return 0;
3076 }
3077
3078 int
3079 qed_iwarp_create_listen(void *rdma_cxt,
3080 struct qed_iwarp_listen_in *iparams,
3081 struct qed_iwarp_listen_out *oparams)
3082 {
3083 struct qed_hwfn *p_hwfn = rdma_cxt;
3084 struct qed_iwarp_listener *listener;
3085
3086 listener = kzalloc(sizeof(*listener), GFP_KERNEL);
3087 if (!listener)
3088 return -ENOMEM;
3089
3090 listener->ip_version = iparams->ip_version;
3091 memcpy(listener->ip_addr, iparams->ip_addr, sizeof(listener->ip_addr));
3092 listener->port = iparams->port;
3093 listener->vlan = iparams->vlan;
3094
3095 listener->event_cb = iparams->event_cb;
3096 listener->cb_context = iparams->cb_context;
3097 listener->max_backlog = iparams->max_backlog;
3098 oparams->handle = listener;
3099
3100 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3101 list_add_tail(&listener->list_entry,
3102 &p_hwfn->p_rdma_info->iwarp.listen_list);
3103 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3104
3105 DP_VERBOSE(p_hwfn,
3106 QED_MSG_RDMA,
3107 "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n",
3108 listener->event_cb,
3109 listener,
3110 listener->ip_addr[0],
3111 listener->ip_addr[1],
3112 listener->ip_addr[2],
3113 listener->ip_addr[3], listener->port, listener->vlan);
3114
3115 return 0;
3116 }
3117
3118 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle)
3119 {
3120 struct qed_iwarp_listener *listener = handle;
3121 struct qed_hwfn *p_hwfn = rdma_cxt;
3122
3123 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "handle=%p\n", handle);
3124
3125 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3126 list_del(&listener->list_entry);
3127 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3128
3129 kfree(listener);
3130
3131 return 0;
3132 }
3133
3134 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams)
3135 {
3136 struct qed_hwfn *p_hwfn = rdma_cxt;
3137 struct qed_sp_init_data init_data;
3138 struct qed_spq_entry *p_ent;
3139 struct qed_iwarp_ep *ep;
3140 struct qed_rdma_qp *qp;
3141 int rc;
3142
3143 ep = iparams->ep_context;
3144 if (!ep) {
3145 DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n");
3146 return -EINVAL;
3147 }
3148
3149 qp = ep->qp;
3150
3151 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
3152 qp->icid, ep->tcp_cid);
3153
3154 memset(&init_data, 0, sizeof(init_data));
3155 init_data.cid = qp->icid;
3156 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
3157 init_data.comp_mode = QED_SPQ_MODE_CB;
3158
3159 rc = qed_sp_init_request(p_hwfn, &p_ent,
3160 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR,
3161 PROTOCOLID_IWARP, &init_data);
3162
3163 if (rc)
3164 return rc;
3165
3166 rc = qed_spq_post(p_hwfn, p_ent, NULL);
3167
3168 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc);
3169
3170 return rc;
3171 }
3172
3173 void
3174 qed_iwarp_query_qp(struct qed_rdma_qp *qp,
3175 struct qed_rdma_query_qp_out_params *out_params)
3176 {
3177 out_params->state = qed_iwarp2roce_state(qp->iwarp_state);
3178 }
Linux with added FPC-III support