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[mirror_ubuntu-hirsute-kernel.git] / drivers / net / ethernet / qlogic / qed / qed_iwarp.c
1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
2 /* QLogic qed NIC Driver
3 * Copyright (c) 2015-2017 QLogic Corporation
4 * Copyright (c) 2019-2020 Marvell International Ltd.
5 */
6
7 #include <linux/if_ether.h>
8 #include <linux/if_vlan.h>
9 #include <linux/ip.h>
10 #include <linux/ipv6.h>
11 #include <linux/spinlock.h>
12 #include <linux/tcp.h>
13 #include "qed_cxt.h"
14 #include "qed_hw.h"
15 #include "qed_ll2.h"
16 #include "qed_rdma.h"
17 #include "qed_reg_addr.h"
18 #include "qed_sp.h"
19 #include "qed_ooo.h"
20
21 #define QED_IWARP_ORD_DEFAULT 32
22 #define QED_IWARP_IRD_DEFAULT 32
23 #define QED_IWARP_MAX_FW_MSS 4120
24
25 #define QED_EP_SIG 0xecabcdef
26
27 struct mpa_v2_hdr {
28 __be16 ird;
29 __be16 ord;
30 };
31
32 #define MPA_V2_PEER2PEER_MODEL 0x8000
33 #define MPA_V2_SEND_RTR 0x4000 /* on ird */
34 #define MPA_V2_READ_RTR 0x4000 /* on ord */
35 #define MPA_V2_WRITE_RTR 0x8000
36 #define MPA_V2_IRD_ORD_MASK 0x3FFF
37
38 #define MPA_REV2(_mpa_rev) ((_mpa_rev) == MPA_NEGOTIATION_TYPE_ENHANCED)
39
40 #define QED_IWARP_INVALID_TCP_CID 0xffffffff
41
42 #define QED_IWARP_RCV_WND_SIZE_DEF_BB_2P (200 * 1024)
43 #define QED_IWARP_RCV_WND_SIZE_DEF_BB_4P (100 * 1024)
44 #define QED_IWARP_RCV_WND_SIZE_DEF_AH_2P (150 * 1024)
45 #define QED_IWARP_RCV_WND_SIZE_DEF_AH_4P (90 * 1024)
46
47 #define QED_IWARP_RCV_WND_SIZE_MIN (0xffff)
48 #define TIMESTAMP_HEADER_SIZE (12)
49 #define QED_IWARP_MAX_FIN_RT_DEFAULT (2)
50
51 #define QED_IWARP_TS_EN BIT(0)
52 #define QED_IWARP_DA_EN BIT(1)
53 #define QED_IWARP_PARAM_CRC_NEEDED (1)
54 #define QED_IWARP_PARAM_P2P (1)
55
56 #define QED_IWARP_DEF_MAX_RT_TIME (0)
57 #define QED_IWARP_DEF_CWND_FACTOR (4)
58 #define QED_IWARP_DEF_KA_MAX_PROBE_CNT (5)
59 #define QED_IWARP_DEF_KA_TIMEOUT (1200000) /* 20 min */
60 #define QED_IWARP_DEF_KA_INTERVAL (1000) /* 1 sec */
61
62 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
63 __le16 echo, union event_ring_data *data,
64 u8 fw_return_code);
65
66 /* Override devinfo with iWARP specific values */
67 void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn)
68 {
69 struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;
70
71 dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE;
72 dev->max_qp = min_t(u32,
73 IWARP_MAX_QPS,
74 p_hwfn->p_rdma_info->num_qps) -
75 QED_IWARP_PREALLOC_CNT;
76
77 dev->max_cq = dev->max_qp;
78
79 dev->max_qp_resp_rd_atomic_resc = QED_IWARP_IRD_DEFAULT;
80 dev->max_qp_req_rd_atomic_resc = QED_IWARP_ORD_DEFAULT;
81 }
82
83 void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
84 {
85 p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP;
86 qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1);
87 p_hwfn->b_rdma_enabled_in_prs = true;
88 }
89
90 /* We have two cid maps, one for tcp which should be used only from passive
91 * syn processing and replacing a pre-allocated ep in the list. The second
92 * for active tcp and for QPs.
93 */
94 static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid)
95 {
96 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
97
98 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
99
100 if (cid < QED_IWARP_PREALLOC_CNT)
101 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
102 cid);
103 else
104 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
105
106 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
107 }
108
109 void
110 qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
111 struct iwarp_init_func_ramrod_data *p_ramrod)
112 {
113 p_ramrod->iwarp.ll2_ooo_q_index =
114 RESC_START(p_hwfn, QED_LL2_RAM_QUEUE) +
115 p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle;
116
117 p_ramrod->tcp.max_fin_rt = QED_IWARP_MAX_FIN_RT_DEFAULT;
118
119 return;
120 }
121
122 static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid)
123 {
124 int rc;
125
126 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
127 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
128 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
129 if (rc) {
130 DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n");
131 return rc;
132 }
133 *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
134
135 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid);
136 if (rc)
137 qed_iwarp_cid_cleaned(p_hwfn, *cid);
138
139 return rc;
140 }
141
142 static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid)
143 {
144 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
145
146 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
147 qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid);
148 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
149 }
150
151 /* This function allocates a cid for passive tcp (called from syn receive)
152 * the reason it's separate from the regular cid allocation is because it
153 * is assured that these cids already have ilt allocated. They are preallocated
154 * to ensure that we won't need to allocate memory during syn processing
155 */
156 static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid)
157 {
158 int rc;
159
160 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
161
162 rc = qed_rdma_bmap_alloc_id(p_hwfn,
163 &p_hwfn->p_rdma_info->tcp_cid_map, cid);
164
165 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
166
167 if (rc) {
168 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
169 "can't allocate iwarp tcp cid max-count=%d\n",
170 p_hwfn->p_rdma_info->tcp_cid_map.max_count);
171
172 *cid = QED_IWARP_INVALID_TCP_CID;
173 return rc;
174 }
175
176 *cid += qed_cxt_get_proto_cid_start(p_hwfn,
177 p_hwfn->p_rdma_info->proto);
178 return 0;
179 }
180
181 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
182 struct qed_rdma_qp *qp,
183 struct qed_rdma_create_qp_out_params *out_params)
184 {
185 struct iwarp_create_qp_ramrod_data *p_ramrod;
186 struct qed_sp_init_data init_data;
187 struct qed_spq_entry *p_ent;
188 u16 physical_queue;
189 u32 cid;
190 int rc;
191
192 qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
193 IWARP_SHARED_QUEUE_PAGE_SIZE,
194 &qp->shared_queue_phys_addr,
195 GFP_KERNEL);
196 if (!qp->shared_queue)
197 return -ENOMEM;
198
199 out_params->sq_pbl_virt = (u8 *)qp->shared_queue +
200 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
201 out_params->sq_pbl_phys = qp->shared_queue_phys_addr +
202 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
203 out_params->rq_pbl_virt = (u8 *)qp->shared_queue +
204 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
205 out_params->rq_pbl_phys = qp->shared_queue_phys_addr +
206 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
207
208 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
209 if (rc)
210 goto err1;
211
212 qp->icid = (u16)cid;
213
214 memset(&init_data, 0, sizeof(init_data));
215 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
216 init_data.cid = qp->icid;
217 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
218
219 rc = qed_sp_init_request(p_hwfn, &p_ent,
220 IWARP_RAMROD_CMD_ID_CREATE_QP,
221 PROTOCOLID_IWARP, &init_data);
222 if (rc)
223 goto err2;
224
225 p_ramrod = &p_ent->ramrod.iwarp_create_qp;
226
227 SET_FIELD(p_ramrod->flags,
228 IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN,
229 qp->fmr_and_reserved_lkey);
230
231 SET_FIELD(p_ramrod->flags,
232 IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all);
233
234 SET_FIELD(p_ramrod->flags,
235 IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN,
236 qp->incoming_rdma_read_en);
237
238 SET_FIELD(p_ramrod->flags,
239 IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN,
240 qp->incoming_rdma_write_en);
241
242 SET_FIELD(p_ramrod->flags,
243 IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN,
244 qp->incoming_atomic_en);
245
246 SET_FIELD(p_ramrod->flags,
247 IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq);
248
249 p_ramrod->pd = cpu_to_le16(qp->pd);
250 p_ramrod->sq_num_pages = cpu_to_le16(qp->sq_num_pages);
251 p_ramrod->rq_num_pages = cpu_to_le16(qp->rq_num_pages);
252
253 p_ramrod->srq_id.srq_idx = cpu_to_le16(qp->srq_id);
254 p_ramrod->srq_id.opaque_fid = cpu_to_le16(p_hwfn->hw_info.opaque_fid);
255 p_ramrod->qp_handle_for_cqe.hi = qp->qp_handle.hi;
256 p_ramrod->qp_handle_for_cqe.lo = qp->qp_handle.lo;
257
258 p_ramrod->cq_cid_for_sq =
259 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id);
260 p_ramrod->cq_cid_for_rq =
261 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id);
262
263 p_ramrod->dpi = cpu_to_le16(qp->dpi);
264
265 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
266 p_ramrod->physical_q0 = cpu_to_le16(physical_queue);
267 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
268 p_ramrod->physical_q1 = cpu_to_le16(physical_queue);
269
270 rc = qed_spq_post(p_hwfn, p_ent, NULL);
271 if (rc)
272 goto err2;
273
274 return rc;
275
276 err2:
277 qed_iwarp_cid_cleaned(p_hwfn, cid);
278 err1:
279 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
280 IWARP_SHARED_QUEUE_PAGE_SIZE,
281 qp->shared_queue, qp->shared_queue_phys_addr);
282
283 return rc;
284 }
285
286 static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
287 {
288 struct iwarp_modify_qp_ramrod_data *p_ramrod;
289 struct qed_sp_init_data init_data;
290 struct qed_spq_entry *p_ent;
291 u16 flags, trans_to_state;
292 int rc;
293
294 /* Get SPQ entry */
295 memset(&init_data, 0, sizeof(init_data));
296 init_data.cid = qp->icid;
297 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
298 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
299
300 rc = qed_sp_init_request(p_hwfn, &p_ent,
301 IWARP_RAMROD_CMD_ID_MODIFY_QP,
302 p_hwfn->p_rdma_info->proto, &init_data);
303 if (rc)
304 return rc;
305
306 p_ramrod = &p_ent->ramrod.iwarp_modify_qp;
307
308 flags = le16_to_cpu(p_ramrod->flags);
309 SET_FIELD(flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN, 0x1);
310 p_ramrod->flags = cpu_to_le16(flags);
311
312 if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING)
313 trans_to_state = IWARP_MODIFY_QP_STATE_CLOSING;
314 else
315 trans_to_state = IWARP_MODIFY_QP_STATE_ERROR;
316
317 p_ramrod->transition_to_state = cpu_to_le16(trans_to_state);
318
319 rc = qed_spq_post(p_hwfn, p_ent, NULL);
320
321 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc);
322
323 return rc;
324 }
325
326 enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state)
327 {
328 switch (state) {
329 case QED_ROCE_QP_STATE_RESET:
330 case QED_ROCE_QP_STATE_INIT:
331 case QED_ROCE_QP_STATE_RTR:
332 return QED_IWARP_QP_STATE_IDLE;
333 case QED_ROCE_QP_STATE_RTS:
334 return QED_IWARP_QP_STATE_RTS;
335 case QED_ROCE_QP_STATE_SQD:
336 return QED_IWARP_QP_STATE_CLOSING;
337 case QED_ROCE_QP_STATE_ERR:
338 return QED_IWARP_QP_STATE_ERROR;
339 case QED_ROCE_QP_STATE_SQE:
340 return QED_IWARP_QP_STATE_TERMINATE;
341 default:
342 return QED_IWARP_QP_STATE_ERROR;
343 }
344 }
345
346 static enum qed_roce_qp_state
347 qed_iwarp2roce_state(enum qed_iwarp_qp_state state)
348 {
349 switch (state) {
350 case QED_IWARP_QP_STATE_IDLE:
351 return QED_ROCE_QP_STATE_INIT;
352 case QED_IWARP_QP_STATE_RTS:
353 return QED_ROCE_QP_STATE_RTS;
354 case QED_IWARP_QP_STATE_TERMINATE:
355 return QED_ROCE_QP_STATE_SQE;
356 case QED_IWARP_QP_STATE_CLOSING:
357 return QED_ROCE_QP_STATE_SQD;
358 case QED_IWARP_QP_STATE_ERROR:
359 return QED_ROCE_QP_STATE_ERR;
360 default:
361 return QED_ROCE_QP_STATE_ERR;
362 }
363 }
364
365 static const char * const iwarp_state_names[] = {
366 "IDLE",
367 "RTS",
368 "TERMINATE",
369 "CLOSING",
370 "ERROR",
371 };
372
373 int
374 qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn,
375 struct qed_rdma_qp *qp,
376 enum qed_iwarp_qp_state new_state, bool internal)
377 {
378 enum qed_iwarp_qp_state prev_iw_state;
379 bool modify_fw = false;
380 int rc = 0;
381
382 /* modify QP can be called from upper-layer or as a result of async
383 * RST/FIN... therefore need to protect
384 */
385 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
386 prev_iw_state = qp->iwarp_state;
387
388 if (prev_iw_state == new_state) {
389 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
390 return 0;
391 }
392
393 switch (prev_iw_state) {
394 case QED_IWARP_QP_STATE_IDLE:
395 switch (new_state) {
396 case QED_IWARP_QP_STATE_RTS:
397 qp->iwarp_state = QED_IWARP_QP_STATE_RTS;
398 break;
399 case QED_IWARP_QP_STATE_ERROR:
400 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
401 if (!internal)
402 modify_fw = true;
403 break;
404 default:
405 break;
406 }
407 break;
408 case QED_IWARP_QP_STATE_RTS:
409 switch (new_state) {
410 case QED_IWARP_QP_STATE_CLOSING:
411 if (!internal)
412 modify_fw = true;
413
414 qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING;
415 break;
416 case QED_IWARP_QP_STATE_ERROR:
417 if (!internal)
418 modify_fw = true;
419 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
420 break;
421 default:
422 break;
423 }
424 break;
425 case QED_IWARP_QP_STATE_ERROR:
426 switch (new_state) {
427 case QED_IWARP_QP_STATE_IDLE:
428
429 qp->iwarp_state = new_state;
430 break;
431 case QED_IWARP_QP_STATE_CLOSING:
432 /* could happen due to race... do nothing.... */
433 break;
434 default:
435 rc = -EINVAL;
436 }
437 break;
438 case QED_IWARP_QP_STATE_TERMINATE:
439 case QED_IWARP_QP_STATE_CLOSING:
440 qp->iwarp_state = new_state;
441 break;
442 default:
443 break;
444 }
445
446 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n",
447 qp->icid,
448 iwarp_state_names[prev_iw_state],
449 iwarp_state_names[qp->iwarp_state],
450 internal ? "internal" : "");
451
452 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
453
454 if (modify_fw)
455 rc = qed_iwarp_modify_fw(p_hwfn, qp);
456
457 return rc;
458 }
459
460 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
461 {
462 struct qed_sp_init_data init_data;
463 struct qed_spq_entry *p_ent;
464 int rc;
465
466 /* Get SPQ entry */
467 memset(&init_data, 0, sizeof(init_data));
468 init_data.cid = qp->icid;
469 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
470 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
471
472 rc = qed_sp_init_request(p_hwfn, &p_ent,
473 IWARP_RAMROD_CMD_ID_DESTROY_QP,
474 p_hwfn->p_rdma_info->proto, &init_data);
475 if (rc)
476 return rc;
477
478 rc = qed_spq_post(p_hwfn, p_ent, NULL);
479
480 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc);
481
482 return rc;
483 }
484
485 static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn,
486 struct qed_iwarp_ep *ep,
487 bool remove_from_active_list)
488 {
489 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
490 sizeof(*ep->ep_buffer_virt),
491 ep->ep_buffer_virt, ep->ep_buffer_phys);
492
493 if (remove_from_active_list) {
494 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
495 list_del(&ep->list_entry);
496 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
497 }
498
499 if (ep->qp)
500 ep->qp->ep = NULL;
501
502 kfree(ep);
503 }
504
505 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
506 {
507 struct qed_iwarp_ep *ep = qp->ep;
508 int wait_count = 0;
509 int rc = 0;
510
511 if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) {
512 rc = qed_iwarp_modify_qp(p_hwfn, qp,
513 QED_IWARP_QP_STATE_ERROR, false);
514 if (rc)
515 return rc;
516 }
517
518 /* Make sure ep is closed before returning and freeing memory. */
519 if (ep) {
520 while (READ_ONCE(ep->state) != QED_IWARP_EP_CLOSED &&
521 wait_count++ < 200)
522 msleep(100);
523
524 if (ep->state != QED_IWARP_EP_CLOSED)
525 DP_NOTICE(p_hwfn, "ep state close timeout state=%x\n",
526 ep->state);
527
528 qed_iwarp_destroy_ep(p_hwfn, ep, false);
529 }
530
531 rc = qed_iwarp_fw_destroy(p_hwfn, qp);
532
533 if (qp->shared_queue)
534 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
535 IWARP_SHARED_QUEUE_PAGE_SIZE,
536 qp->shared_queue, qp->shared_queue_phys_addr);
537
538 return rc;
539 }
540
541 static int
542 qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out)
543 {
544 struct qed_iwarp_ep *ep;
545 int rc;
546
547 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
548 if (!ep)
549 return -ENOMEM;
550
551 ep->state = QED_IWARP_EP_INIT;
552
553 ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
554 sizeof(*ep->ep_buffer_virt),
555 &ep->ep_buffer_phys,
556 GFP_KERNEL);
557 if (!ep->ep_buffer_virt) {
558 rc = -ENOMEM;
559 goto err;
560 }
561
562 ep->sig = QED_EP_SIG;
563
564 *ep_out = ep;
565
566 return 0;
567
568 err:
569 kfree(ep);
570 return rc;
571 }
572
573 static void
574 qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn,
575 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod)
576 {
577 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n",
578 p_tcp_ramrod->tcp.local_mac_addr_lo,
579 p_tcp_ramrod->tcp.local_mac_addr_mid,
580 p_tcp_ramrod->tcp.local_mac_addr_hi,
581 p_tcp_ramrod->tcp.remote_mac_addr_lo,
582 p_tcp_ramrod->tcp.remote_mac_addr_mid,
583 p_tcp_ramrod->tcp.remote_mac_addr_hi);
584
585 if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) {
586 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
587 "local_ip=%pI4h:%x, remote_ip=%pI4h:%x, vlan=%x\n",
588 p_tcp_ramrod->tcp.local_ip,
589 p_tcp_ramrod->tcp.local_port,
590 p_tcp_ramrod->tcp.remote_ip,
591 p_tcp_ramrod->tcp.remote_port,
592 p_tcp_ramrod->tcp.vlan_id);
593 } else {
594 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
595 "local_ip=%pI6:%x, remote_ip=%pI6:%x, vlan=%x\n",
596 p_tcp_ramrod->tcp.local_ip,
597 p_tcp_ramrod->tcp.local_port,
598 p_tcp_ramrod->tcp.remote_ip,
599 p_tcp_ramrod->tcp.remote_port,
600 p_tcp_ramrod->tcp.vlan_id);
601 }
602
603 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
604 "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n",
605 p_tcp_ramrod->tcp.flow_label,
606 p_tcp_ramrod->tcp.ttl,
607 p_tcp_ramrod->tcp.tos_or_tc,
608 p_tcp_ramrod->tcp.mss,
609 p_tcp_ramrod->tcp.rcv_wnd_scale,
610 p_tcp_ramrod->tcp.connect_mode,
611 p_tcp_ramrod->tcp.flags);
612
613 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n",
614 p_tcp_ramrod->tcp.syn_ip_payload_length,
615 p_tcp_ramrod->tcp.syn_phy_addr_lo,
616 p_tcp_ramrod->tcp.syn_phy_addr_hi);
617 }
618
619 static int
620 qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
621 {
622 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
623 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod;
624 struct tcp_offload_params_opt2 *tcp;
625 struct qed_sp_init_data init_data;
626 struct qed_spq_entry *p_ent;
627 dma_addr_t async_output_phys;
628 dma_addr_t in_pdata_phys;
629 u16 physical_q;
630 u16 flags = 0;
631 u8 tcp_flags;
632 int rc;
633 int i;
634
635 memset(&init_data, 0, sizeof(init_data));
636 init_data.cid = ep->tcp_cid;
637 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
638 if (ep->connect_mode == TCP_CONNECT_PASSIVE)
639 init_data.comp_mode = QED_SPQ_MODE_CB;
640 else
641 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
642
643 rc = qed_sp_init_request(p_hwfn, &p_ent,
644 IWARP_RAMROD_CMD_ID_TCP_OFFLOAD,
645 PROTOCOLID_IWARP, &init_data);
646 if (rc)
647 return rc;
648
649 p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload;
650
651 in_pdata_phys = ep->ep_buffer_phys +
652 offsetof(struct qed_iwarp_ep_memory, in_pdata);
653 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr,
654 in_pdata_phys);
655
656 p_tcp_ramrod->iwarp.incoming_ulp_buffer.len =
657 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
658
659 async_output_phys = ep->ep_buffer_phys +
660 offsetof(struct qed_iwarp_ep_memory, async_output);
661 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf,
662 async_output_phys);
663
664 p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
665 p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
666
667 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
668 p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q);
669 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
670 p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q);
671 p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev;
672
673 tcp = &p_tcp_ramrod->tcp;
674 qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi,
675 &tcp->remote_mac_addr_mid,
676 &tcp->remote_mac_addr_lo, ep->remote_mac_addr);
677 qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid,
678 &tcp->local_mac_addr_lo, ep->local_mac_addr);
679
680 tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan);
681
682 tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags;
683
684 SET_FIELD(flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN,
685 !!(tcp_flags & QED_IWARP_TS_EN));
686
687 SET_FIELD(flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN,
688 !!(tcp_flags & QED_IWARP_DA_EN));
689
690 tcp->flags = cpu_to_le16(flags);
691 tcp->ip_version = ep->cm_info.ip_version;
692
693 for (i = 0; i < 4; i++) {
694 tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]);
695 tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]);
696 }
697
698 tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port);
699 tcp->local_port = cpu_to_le16(ep->cm_info.local_port);
700 tcp->mss = cpu_to_le16(ep->mss);
701 tcp->flow_label = 0;
702 tcp->ttl = 0x40;
703 tcp->tos_or_tc = 0;
704
705 tcp->max_rt_time = QED_IWARP_DEF_MAX_RT_TIME;
706 tcp->cwnd = cpu_to_le32(QED_IWARP_DEF_CWND_FACTOR * ep->mss);
707 tcp->ka_max_probe_cnt = QED_IWARP_DEF_KA_MAX_PROBE_CNT;
708 tcp->ka_timeout = cpu_to_le32(QED_IWARP_DEF_KA_TIMEOUT);
709 tcp->ka_interval = cpu_to_le32(QED_IWARP_DEF_KA_INTERVAL);
710
711 tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale;
712 tcp->connect_mode = ep->connect_mode;
713
714 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
715 tcp->syn_ip_payload_length =
716 cpu_to_le16(ep->syn_ip_payload_length);
717 tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr);
718 tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr);
719 }
720
721 qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod);
722
723 rc = qed_spq_post(p_hwfn, p_ent, NULL);
724
725 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
726 "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc);
727
728 return rc;
729 }
730
731 static void
732 qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
733 {
734 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
735 struct qed_iwarp_cm_event_params params;
736 struct mpa_v2_hdr *mpa_v2;
737 union async_output *async_data;
738 u16 mpa_ord, mpa_ird;
739 u8 mpa_hdr_size = 0;
740 u16 ulp_data_len;
741 u8 mpa_rev;
742
743 async_data = &ep->ep_buffer_virt->async_output;
744
745 mpa_rev = async_data->mpa_request.mpa_handshake_mode;
746 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
747 "private_data_len=%x handshake_mode=%x private_data=(%x)\n",
748 async_data->mpa_request.ulp_data_len,
749 mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata)));
750
751 if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
752 /* Read ord/ird values from private data buffer */
753 mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata;
754 mpa_hdr_size = sizeof(*mpa_v2);
755
756 mpa_ord = ntohs(mpa_v2->ord);
757 mpa_ird = ntohs(mpa_v2->ird);
758
759 /* Temprary store in cm_info incoming ord/ird requested, later
760 * replace with negotiated value during accept
761 */
762 ep->cm_info.ord = (u8)min_t(u16,
763 (mpa_ord & MPA_V2_IRD_ORD_MASK),
764 QED_IWARP_ORD_DEFAULT);
765
766 ep->cm_info.ird = (u8)min_t(u16,
767 (mpa_ird & MPA_V2_IRD_ORD_MASK),
768 QED_IWARP_IRD_DEFAULT);
769
770 /* Peer2Peer negotiation */
771 ep->rtr_type = MPA_RTR_TYPE_NONE;
772 if (mpa_ird & MPA_V2_PEER2PEER_MODEL) {
773 if (mpa_ord & MPA_V2_WRITE_RTR)
774 ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE;
775
776 if (mpa_ord & MPA_V2_READ_RTR)
777 ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ;
778
779 if (mpa_ird & MPA_V2_SEND_RTR)
780 ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND;
781
782 ep->rtr_type &= iwarp_info->rtr_type;
783
784 /* if we're left with no match send our capabilities */
785 if (ep->rtr_type == MPA_RTR_TYPE_NONE)
786 ep->rtr_type = iwarp_info->rtr_type;
787 }
788
789 ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
790 } else {
791 ep->cm_info.ord = QED_IWARP_ORD_DEFAULT;
792 ep->cm_info.ird = QED_IWARP_IRD_DEFAULT;
793 ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC;
794 }
795
796 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
797 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n",
798 mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type,
799 async_data->mpa_request.ulp_data_len, mpa_hdr_size);
800
801 /* Strip mpa v2 hdr from private data before sending to upper layer */
802 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size;
803
804 ulp_data_len = le16_to_cpu(async_data->mpa_request.ulp_data_len);
805 ep->cm_info.private_data_len = ulp_data_len - mpa_hdr_size;
806
807 params.event = QED_IWARP_EVENT_MPA_REQUEST;
808 params.cm_info = &ep->cm_info;
809 params.ep_context = ep;
810 params.status = 0;
811
812 ep->state = QED_IWARP_EP_MPA_REQ_RCVD;
813 ep->event_cb(ep->cb_context, &params);
814 }
815
816 static int
817 qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
818 {
819 struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod;
820 struct mpa_outgoing_params *common;
821 struct qed_iwarp_info *iwarp_info;
822 struct qed_sp_init_data init_data;
823 dma_addr_t async_output_phys;
824 struct qed_spq_entry *p_ent;
825 dma_addr_t out_pdata_phys;
826 dma_addr_t in_pdata_phys;
827 struct qed_rdma_qp *qp;
828 bool reject;
829 u32 val;
830 int rc;
831
832 if (!ep)
833 return -EINVAL;
834
835 qp = ep->qp;
836 reject = !qp;
837
838 memset(&init_data, 0, sizeof(init_data));
839 init_data.cid = reject ? ep->tcp_cid : qp->icid;
840 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
841
842 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
843 init_data.comp_mode = QED_SPQ_MODE_CB;
844 else
845 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
846
847 rc = qed_sp_init_request(p_hwfn, &p_ent,
848 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD,
849 PROTOCOLID_IWARP, &init_data);
850 if (rc)
851 return rc;
852
853 p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload;
854 common = &p_mpa_ramrod->common;
855
856 out_pdata_phys = ep->ep_buffer_phys +
857 offsetof(struct qed_iwarp_ep_memory, out_pdata);
858 DMA_REGPAIR_LE(common->outgoing_ulp_buffer.addr, out_pdata_phys);
859
860 val = ep->cm_info.private_data_len;
861 common->outgoing_ulp_buffer.len = cpu_to_le16(val);
862 common->crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed;
863
864 common->out_rq.ord = cpu_to_le32(ep->cm_info.ord);
865 common->out_rq.ird = cpu_to_le32(ep->cm_info.ird);
866
867 val = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid;
868 p_mpa_ramrod->tcp_cid = cpu_to_le32(val);
869
870 in_pdata_phys = ep->ep_buffer_phys +
871 offsetof(struct qed_iwarp_ep_memory, in_pdata);
872 p_mpa_ramrod->tcp_connect_side = ep->connect_mode;
873 DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr,
874 in_pdata_phys);
875 p_mpa_ramrod->incoming_ulp_buffer.len =
876 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
877 async_output_phys = ep->ep_buffer_phys +
878 offsetof(struct qed_iwarp_ep_memory, async_output);
879 DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf,
880 async_output_phys);
881 p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
882 p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
883
884 if (!reject) {
885 DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr,
886 qp->shared_queue_phys_addr);
887 p_mpa_ramrod->stats_counter_id =
888 RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue;
889 } else {
890 common->reject = 1;
891 }
892
893 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
894 p_mpa_ramrod->rcv_wnd = cpu_to_le16(iwarp_info->rcv_wnd_size);
895 p_mpa_ramrod->mode = ep->mpa_rev;
896 SET_FIELD(p_mpa_ramrod->rtr_pref,
897 IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type);
898
899 ep->state = QED_IWARP_EP_MPA_OFFLOADED;
900 rc = qed_spq_post(p_hwfn, p_ent, NULL);
901 if (!reject)
902 ep->cid = qp->icid; /* Now they're migrated. */
903
904 DP_VERBOSE(p_hwfn,
905 QED_MSG_RDMA,
906 "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",
907 reject ? 0xffff : qp->icid,
908 ep->tcp_cid,
909 rc,
910 ep->cm_info.ird,
911 ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject);
912 return rc;
913 }
914
915 static void
916 qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
917 {
918 ep->state = QED_IWARP_EP_INIT;
919 if (ep->qp)
920 ep->qp->ep = NULL;
921 ep->qp = NULL;
922 memset(&ep->cm_info, 0, sizeof(ep->cm_info));
923
924 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
925 /* We don't care about the return code, it's ok if tcp_cid
926 * remains invalid...in this case we'll defer allocation
927 */
928 qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
929 }
930 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
931
932 list_move_tail(&ep->list_entry,
933 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
934
935 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
936 }
937
938 static void
939 qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
940 {
941 struct mpa_v2_hdr *mpa_v2_params;
942 union async_output *async_data;
943 u16 mpa_ird, mpa_ord;
944 u8 mpa_data_size = 0;
945 u16 ulp_data_len;
946
947 if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) {
948 mpa_v2_params =
949 (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata);
950 mpa_data_size = sizeof(*mpa_v2_params);
951 mpa_ird = ntohs(mpa_v2_params->ird);
952 mpa_ord = ntohs(mpa_v2_params->ord);
953
954 ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK);
955 ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK);
956 }
957
958 async_data = &ep->ep_buffer_virt->async_output;
959 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size;
960
961 ulp_data_len = le16_to_cpu(async_data->mpa_response.ulp_data_len);
962 ep->cm_info.private_data_len = ulp_data_len - mpa_data_size;
963 }
964
965 static void
966 qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
967 {
968 struct qed_iwarp_cm_event_params params;
969
970 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
971 DP_NOTICE(p_hwfn,
972 "MPA reply event not expected on passive side!\n");
973 return;
974 }
975
976 params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY;
977
978 qed_iwarp_parse_private_data(p_hwfn, ep);
979
980 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
981 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
982 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
983
984 params.cm_info = &ep->cm_info;
985 params.ep_context = ep;
986 params.status = 0;
987
988 ep->mpa_reply_processed = true;
989
990 ep->event_cb(ep->cb_context, &params);
991 }
992
993 #define QED_IWARP_CONNECT_MODE_STRING(ep) \
994 ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active"
995
996 /* Called as a result of the event:
997 * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE
998 */
999 static void
1000 qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn,
1001 struct qed_iwarp_ep *ep, u8 fw_return_code)
1002 {
1003 struct qed_iwarp_cm_event_params params;
1004
1005 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
1006 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
1007 else
1008 params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE;
1009
1010 if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed)
1011 qed_iwarp_parse_private_data(p_hwfn, ep);
1012
1013 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1014 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
1015 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
1016
1017 params.cm_info = &ep->cm_info;
1018
1019 params.ep_context = ep;
1020
1021 switch (fw_return_code) {
1022 case RDMA_RETURN_OK:
1023 ep->qp->max_rd_atomic_req = ep->cm_info.ord;
1024 ep->qp->max_rd_atomic_resp = ep->cm_info.ird;
1025 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1);
1026 ep->state = QED_IWARP_EP_ESTABLISHED;
1027 params.status = 0;
1028 break;
1029 case IWARP_CONN_ERROR_MPA_TIMEOUT:
1030 DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n",
1031 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1032 params.status = -EBUSY;
1033 break;
1034 case IWARP_CONN_ERROR_MPA_ERROR_REJECT:
1035 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n",
1036 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1037 params.status = -ECONNREFUSED;
1038 break;
1039 case IWARP_CONN_ERROR_MPA_RST:
1040 DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n",
1041 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid,
1042 ep->tcp_cid);
1043 params.status = -ECONNRESET;
1044 break;
1045 case IWARP_CONN_ERROR_MPA_FIN:
1046 DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n",
1047 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1048 params.status = -ECONNREFUSED;
1049 break;
1050 case IWARP_CONN_ERROR_MPA_INSUF_IRD:
1051 DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n",
1052 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1053 params.status = -ECONNREFUSED;
1054 break;
1055 case IWARP_CONN_ERROR_MPA_RTR_MISMATCH:
1056 DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n",
1057 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1058 params.status = -ECONNREFUSED;
1059 break;
1060 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
1061 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
1062 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1063 params.status = -ECONNREFUSED;
1064 break;
1065 case IWARP_CONN_ERROR_MPA_LOCAL_ERROR:
1066 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n",
1067 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1068 params.status = -ECONNREFUSED;
1069 break;
1070 case IWARP_CONN_ERROR_MPA_TERMINATE:
1071 DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n",
1072 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1073 params.status = -ECONNREFUSED;
1074 break;
1075 default:
1076 params.status = -ECONNRESET;
1077 break;
1078 }
1079
1080 if (fw_return_code != RDMA_RETURN_OK)
1081 /* paired with READ_ONCE in destroy_qp */
1082 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
1083
1084 ep->event_cb(ep->cb_context, &params);
1085
1086 /* on passive side, if there is no associated QP (REJECT) we need to
1087 * return the ep to the pool, (in the regular case we add an element
1088 * in accept instead of this one.
1089 * In both cases we need to remove it from the ep_list.
1090 */
1091 if (fw_return_code != RDMA_RETURN_OK) {
1092 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1093 if ((ep->connect_mode == TCP_CONNECT_PASSIVE) &&
1094 (!ep->qp)) { /* Rejected */
1095 qed_iwarp_return_ep(p_hwfn, ep);
1096 } else {
1097 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1098 list_del(&ep->list_entry);
1099 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1100 }
1101 }
1102 }
1103
1104 static void
1105 qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn,
1106 struct qed_iwarp_ep *ep, u8 *mpa_data_size)
1107 {
1108 struct mpa_v2_hdr *mpa_v2_params;
1109 u16 mpa_ird, mpa_ord;
1110
1111 *mpa_data_size = 0;
1112 if (MPA_REV2(ep->mpa_rev)) {
1113 mpa_v2_params =
1114 (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata;
1115 *mpa_data_size = sizeof(*mpa_v2_params);
1116
1117 mpa_ird = (u16)ep->cm_info.ird;
1118 mpa_ord = (u16)ep->cm_info.ord;
1119
1120 if (ep->rtr_type != MPA_RTR_TYPE_NONE) {
1121 mpa_ird |= MPA_V2_PEER2PEER_MODEL;
1122
1123 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND)
1124 mpa_ird |= MPA_V2_SEND_RTR;
1125
1126 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE)
1127 mpa_ord |= MPA_V2_WRITE_RTR;
1128
1129 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ)
1130 mpa_ord |= MPA_V2_READ_RTR;
1131 }
1132
1133 mpa_v2_params->ird = htons(mpa_ird);
1134 mpa_v2_params->ord = htons(mpa_ord);
1135
1136 DP_VERBOSE(p_hwfn,
1137 QED_MSG_RDMA,
1138 "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n",
1139 mpa_v2_params->ird,
1140 mpa_v2_params->ord,
1141 *((u32 *)mpa_v2_params),
1142 mpa_ord & MPA_V2_IRD_ORD_MASK,
1143 mpa_ird & MPA_V2_IRD_ORD_MASK,
1144 !!(mpa_ird & MPA_V2_PEER2PEER_MODEL),
1145 !!(mpa_ird & MPA_V2_SEND_RTR),
1146 !!(mpa_ord & MPA_V2_WRITE_RTR),
1147 !!(mpa_ord & MPA_V2_READ_RTR));
1148 }
1149 }
1150
1151 int qed_iwarp_connect(void *rdma_cxt,
1152 struct qed_iwarp_connect_in *iparams,
1153 struct qed_iwarp_connect_out *oparams)
1154 {
1155 struct qed_hwfn *p_hwfn = rdma_cxt;
1156 struct qed_iwarp_info *iwarp_info;
1157 struct qed_iwarp_ep *ep;
1158 u8 mpa_data_size = 0;
1159 u32 cid;
1160 int rc;
1161
1162 if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) ||
1163 (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) {
1164 DP_NOTICE(p_hwfn,
1165 "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1166 iparams->qp->icid, iparams->cm_info.ord,
1167 iparams->cm_info.ird);
1168
1169 return -EINVAL;
1170 }
1171
1172 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1173
1174 /* Allocate ep object */
1175 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1176 if (rc)
1177 return rc;
1178
1179 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1180 if (rc)
1181 goto err;
1182
1183 ep->tcp_cid = cid;
1184
1185 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1186 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
1187 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1188
1189 ep->qp = iparams->qp;
1190 ep->qp->ep = ep;
1191 ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr);
1192 ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr);
1193 memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info));
1194
1195 ep->cm_info.ord = iparams->cm_info.ord;
1196 ep->cm_info.ird = iparams->cm_info.ird;
1197
1198 ep->rtr_type = iwarp_info->rtr_type;
1199 if (!iwarp_info->peer2peer)
1200 ep->rtr_type = MPA_RTR_TYPE_NONE;
1201
1202 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0))
1203 ep->cm_info.ord = 1;
1204
1205 ep->mpa_rev = iwarp_info->mpa_rev;
1206
1207 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1208
1209 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1210 ep->cm_info.private_data_len = iparams->cm_info.private_data_len +
1211 mpa_data_size;
1212
1213 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1214 iparams->cm_info.private_data,
1215 iparams->cm_info.private_data_len);
1216
1217 ep->mss = iparams->mss;
1218 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
1219
1220 ep->event_cb = iparams->event_cb;
1221 ep->cb_context = iparams->cb_context;
1222 ep->connect_mode = TCP_CONNECT_ACTIVE;
1223
1224 oparams->ep_context = ep;
1225
1226 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
1227
1228 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n",
1229 iparams->qp->icid, ep->tcp_cid, rc);
1230
1231 if (rc) {
1232 qed_iwarp_destroy_ep(p_hwfn, ep, true);
1233 goto err;
1234 }
1235
1236 return rc;
1237 err:
1238 qed_iwarp_cid_cleaned(p_hwfn, cid);
1239
1240 return rc;
1241 }
1242
1243 static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn)
1244 {
1245 struct qed_iwarp_ep *ep = NULL;
1246 int rc;
1247
1248 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1249
1250 if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1251 DP_ERR(p_hwfn, "Ep list is empty\n");
1252 goto out;
1253 }
1254
1255 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1256 struct qed_iwarp_ep, list_entry);
1257
1258 /* in some cases we could have failed allocating a tcp cid when added
1259 * from accept / failure... retry now..this is not the common case.
1260 */
1261 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
1262 rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
1263
1264 /* if we fail we could look for another entry with a valid
1265 * tcp_cid, but since we don't expect to reach this anyway
1266 * it's not worth the handling
1267 */
1268 if (rc) {
1269 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1270 ep = NULL;
1271 goto out;
1272 }
1273 }
1274
1275 list_del(&ep->list_entry);
1276
1277 out:
1278 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1279 return ep;
1280 }
1281
1282 #define QED_IWARP_MAX_CID_CLEAN_TIME 100
1283 #define QED_IWARP_MAX_NO_PROGRESS_CNT 5
1284
1285 /* This function waits for all the bits of a bmap to be cleared, as long as
1286 * there is progress ( i.e. the number of bits left to be cleared decreases )
1287 * the function continues.
1288 */
1289 static int
1290 qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap)
1291 {
1292 int prev_weight = 0;
1293 int wait_count = 0;
1294 int weight = 0;
1295
1296 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1297 prev_weight = weight;
1298
1299 while (weight) {
1300 msleep(QED_IWARP_MAX_CID_CLEAN_TIME);
1301
1302 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1303
1304 if (prev_weight == weight) {
1305 wait_count++;
1306 } else {
1307 prev_weight = weight;
1308 wait_count = 0;
1309 }
1310
1311 if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) {
1312 DP_NOTICE(p_hwfn,
1313 "%s bitmap wait timed out (%d cids pending)\n",
1314 bmap->name, weight);
1315 return -EBUSY;
1316 }
1317 }
1318 return 0;
1319 }
1320
1321 static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn)
1322 {
1323 int rc;
1324 int i;
1325
1326 rc = qed_iwarp_wait_cid_map_cleared(p_hwfn,
1327 &p_hwfn->p_rdma_info->tcp_cid_map);
1328 if (rc)
1329 return rc;
1330
1331 /* Now free the tcp cids from the main cid map */
1332 for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++)
1333 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i);
1334
1335 /* Now wait for all cids to be completed */
1336 return qed_iwarp_wait_cid_map_cleared(p_hwfn,
1337 &p_hwfn->p_rdma_info->cid_map);
1338 }
1339
1340 static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn)
1341 {
1342 struct qed_iwarp_ep *ep;
1343
1344 while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1345 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1346
1347 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1348 struct qed_iwarp_ep, list_entry);
1349
1350 if (!ep) {
1351 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1352 break;
1353 }
1354 list_del(&ep->list_entry);
1355
1356 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1357
1358 if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID)
1359 qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid);
1360
1361 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1362 }
1363 }
1364
1365 static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init)
1366 {
1367 struct qed_iwarp_ep *ep;
1368 int rc = 0;
1369 int count;
1370 u32 cid;
1371 int i;
1372
1373 count = init ? QED_IWARP_PREALLOC_CNT : 1;
1374 for (i = 0; i < count; i++) {
1375 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1376 if (rc)
1377 return rc;
1378
1379 /* During initialization we allocate from the main pool,
1380 * afterwards we allocate only from the tcp_cid.
1381 */
1382 if (init) {
1383 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1384 if (rc)
1385 goto err;
1386 qed_iwarp_set_tcp_cid(p_hwfn, cid);
1387 } else {
1388 /* We don't care about the return code, it's ok if
1389 * tcp_cid remains invalid...in this case we'll
1390 * defer allocation
1391 */
1392 qed_iwarp_alloc_tcp_cid(p_hwfn, &cid);
1393 }
1394
1395 ep->tcp_cid = cid;
1396
1397 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1398 list_add_tail(&ep->list_entry,
1399 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
1400 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1401 }
1402
1403 return rc;
1404
1405 err:
1406 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1407
1408 return rc;
1409 }
1410
1411 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn)
1412 {
1413 int rc;
1414
1415 /* Allocate bitmap for tcp cid. These are used by passive side
1416 * to ensure it can allocate a tcp cid during dpc that was
1417 * pre-acquired and doesn't require dynamic allocation of ilt
1418 */
1419 rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
1420 QED_IWARP_PREALLOC_CNT, "TCP_CID");
1421 if (rc) {
1422 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1423 "Failed to allocate tcp cid, rc = %d\n", rc);
1424 return rc;
1425 }
1426
1427 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list);
1428 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1429
1430 rc = qed_iwarp_prealloc_ep(p_hwfn, true);
1431 if (rc)
1432 return rc;
1433
1434 return qed_ooo_alloc(p_hwfn);
1435 }
1436
1437 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn)
1438 {
1439 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1440
1441 qed_ooo_free(p_hwfn);
1442 qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1);
1443 kfree(iwarp_info->mpa_bufs);
1444 kfree(iwarp_info->partial_fpdus);
1445 kfree(iwarp_info->mpa_intermediate_buf);
1446 }
1447
1448 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams)
1449 {
1450 struct qed_hwfn *p_hwfn = rdma_cxt;
1451 struct qed_iwarp_ep *ep;
1452 u8 mpa_data_size = 0;
1453 int rc;
1454
1455 ep = iparams->ep_context;
1456 if (!ep) {
1457 DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n");
1458 return -EINVAL;
1459 }
1460
1461 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
1462 iparams->qp->icid, ep->tcp_cid);
1463
1464 if ((iparams->ord > QED_IWARP_ORD_DEFAULT) ||
1465 (iparams->ird > QED_IWARP_IRD_DEFAULT)) {
1466 DP_VERBOSE(p_hwfn,
1467 QED_MSG_RDMA,
1468 "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1469 iparams->qp->icid,
1470 ep->tcp_cid, iparams->ord, iparams->ord);
1471 return -EINVAL;
1472 }
1473
1474 qed_iwarp_prealloc_ep(p_hwfn, false);
1475
1476 ep->cb_context = iparams->cb_context;
1477 ep->qp = iparams->qp;
1478 ep->qp->ep = ep;
1479
1480 if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
1481 /* Negotiate ord/ird: if upperlayer requested ord larger than
1482 * ird advertised by remote, we need to decrease our ord
1483 */
1484 if (iparams->ord > ep->cm_info.ird)
1485 iparams->ord = ep->cm_info.ird;
1486
1487 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) &&
1488 (iparams->ird == 0))
1489 iparams->ird = 1;
1490 }
1491
1492 /* Update cm_info ord/ird to be negotiated values */
1493 ep->cm_info.ord = iparams->ord;
1494 ep->cm_info.ird = iparams->ird;
1495
1496 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1497
1498 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1499 ep->cm_info.private_data_len = iparams->private_data_len +
1500 mpa_data_size;
1501
1502 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1503 iparams->private_data, iparams->private_data_len);
1504
1505 rc = qed_iwarp_mpa_offload(p_hwfn, ep);
1506 if (rc)
1507 qed_iwarp_modify_qp(p_hwfn,
1508 iparams->qp, QED_IWARP_QP_STATE_ERROR, 1);
1509
1510 return rc;
1511 }
1512
1513 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams)
1514 {
1515 struct qed_hwfn *p_hwfn = rdma_cxt;
1516 struct qed_iwarp_ep *ep;
1517 u8 mpa_data_size = 0;
1518
1519 ep = iparams->ep_context;
1520 if (!ep) {
1521 DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n");
1522 return -EINVAL;
1523 }
1524
1525 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid);
1526
1527 ep->cb_context = iparams->cb_context;
1528 ep->qp = NULL;
1529
1530 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1531
1532 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1533 ep->cm_info.private_data_len = iparams->private_data_len +
1534 mpa_data_size;
1535
1536 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1537 iparams->private_data, iparams->private_data_len);
1538
1539 return qed_iwarp_mpa_offload(p_hwfn, ep);
1540 }
1541
1542 static void
1543 qed_iwarp_print_cm_info(struct qed_hwfn *p_hwfn,
1544 struct qed_iwarp_cm_info *cm_info)
1545 {
1546 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "ip_version = %d\n",
1547 cm_info->ip_version);
1548
1549 if (cm_info->ip_version == QED_TCP_IPV4)
1550 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1551 "remote_ip %pI4h:%x, local_ip %pI4h:%x vlan=%x\n",
1552 cm_info->remote_ip, cm_info->remote_port,
1553 cm_info->local_ip, cm_info->local_port,
1554 cm_info->vlan);
1555 else
1556 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1557 "remote_ip %pI6:%x, local_ip %pI6:%x vlan=%x\n",
1558 cm_info->remote_ip, cm_info->remote_port,
1559 cm_info->local_ip, cm_info->local_port,
1560 cm_info->vlan);
1561
1562 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1563 "private_data_len = %x ord = %d, ird = %d\n",
1564 cm_info->private_data_len, cm_info->ord, cm_info->ird);
1565 }
1566
1567 static int
1568 qed_iwarp_ll2_post_rx(struct qed_hwfn *p_hwfn,
1569 struct qed_iwarp_ll2_buff *buf, u8 handle)
1570 {
1571 int rc;
1572
1573 rc = qed_ll2_post_rx_buffer(p_hwfn, handle, buf->data_phys_addr,
1574 (u16)buf->buff_size, buf, 1);
1575 if (rc) {
1576 DP_NOTICE(p_hwfn,
1577 "Failed to repost rx buffer to ll2 rc = %d, handle=%d\n",
1578 rc, handle);
1579 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buf->buff_size,
1580 buf->data, buf->data_phys_addr);
1581 kfree(buf);
1582 }
1583
1584 return rc;
1585 }
1586
1587 static bool
1588 qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info)
1589 {
1590 struct qed_iwarp_ep *ep = NULL;
1591 bool found = false;
1592
1593 list_for_each_entry(ep,
1594 &p_hwfn->p_rdma_info->iwarp.ep_list,
1595 list_entry) {
1596 if ((ep->cm_info.local_port == cm_info->local_port) &&
1597 (ep->cm_info.remote_port == cm_info->remote_port) &&
1598 (ep->cm_info.vlan == cm_info->vlan) &&
1599 !memcmp(&ep->cm_info.local_ip, cm_info->local_ip,
1600 sizeof(cm_info->local_ip)) &&
1601 !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip,
1602 sizeof(cm_info->remote_ip))) {
1603 found = true;
1604 break;
1605 }
1606 }
1607
1608 if (found) {
1609 DP_NOTICE(p_hwfn,
1610 "SYN received on active connection - dropping\n");
1611 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1612
1613 return true;
1614 }
1615
1616 return false;
1617 }
1618
1619 static struct qed_iwarp_listener *
1620 qed_iwarp_get_listener(struct qed_hwfn *p_hwfn,
1621 struct qed_iwarp_cm_info *cm_info)
1622 {
1623 struct qed_iwarp_listener *listener = NULL;
1624 static const u32 ip_zero[4] = { 0, 0, 0, 0 };
1625 bool found = false;
1626
1627 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1628
1629 list_for_each_entry(listener,
1630 &p_hwfn->p_rdma_info->iwarp.listen_list,
1631 list_entry) {
1632 if (listener->port == cm_info->local_port) {
1633 if (!memcmp(listener->ip_addr,
1634 ip_zero, sizeof(ip_zero))) {
1635 found = true;
1636 break;
1637 }
1638
1639 if (!memcmp(listener->ip_addr,
1640 cm_info->local_ip,
1641 sizeof(cm_info->local_ip)) &&
1642 (listener->vlan == cm_info->vlan)) {
1643 found = true;
1644 break;
1645 }
1646 }
1647 }
1648
1649 if (found) {
1650 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener found = %p\n",
1651 listener);
1652 return listener;
1653 }
1654
1655 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener not found\n");
1656 return NULL;
1657 }
1658
1659 static int
1660 qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
1661 struct qed_iwarp_cm_info *cm_info,
1662 void *buf,
1663 u8 *remote_mac_addr,
1664 u8 *local_mac_addr,
1665 int *payload_len, int *tcp_start_offset)
1666 {
1667 struct vlan_ethhdr *vethh;
1668 bool vlan_valid = false;
1669 struct ipv6hdr *ip6h;
1670 struct ethhdr *ethh;
1671 struct tcphdr *tcph;
1672 struct iphdr *iph;
1673 int eth_hlen;
1674 int ip_hlen;
1675 int eth_type;
1676 int i;
1677
1678 ethh = buf;
1679 eth_type = ntohs(ethh->h_proto);
1680 if (eth_type == ETH_P_8021Q) {
1681 vlan_valid = true;
1682 vethh = (struct vlan_ethhdr *)ethh;
1683 cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK;
1684 eth_type = ntohs(vethh->h_vlan_encapsulated_proto);
1685 }
1686
1687 eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
1688
1689 if (!ether_addr_equal(ethh->h_dest,
1690 p_hwfn->p_rdma_info->iwarp.mac_addr)) {
1691 DP_VERBOSE(p_hwfn,
1692 QED_MSG_RDMA,
1693 "Got unexpected mac %pM instead of %pM\n",
1694 ethh->h_dest, p_hwfn->p_rdma_info->iwarp.mac_addr);
1695 return -EINVAL;
1696 }
1697
1698 ether_addr_copy(remote_mac_addr, ethh->h_source);
1699 ether_addr_copy(local_mac_addr, ethh->h_dest);
1700
1701 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n",
1702 eth_type, ethh->h_source);
1703
1704 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_hlen=%d destination mac: %pM\n",
1705 eth_hlen, ethh->h_dest);
1706
1707 iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen);
1708
1709 if (eth_type == ETH_P_IP) {
1710 if (iph->protocol != IPPROTO_TCP) {
1711 DP_NOTICE(p_hwfn,
1712 "Unexpected ip protocol on ll2 %x\n",
1713 iph->protocol);
1714 return -EINVAL;
1715 }
1716
1717 cm_info->local_ip[0] = ntohl(iph->daddr);
1718 cm_info->remote_ip[0] = ntohl(iph->saddr);
1719 cm_info->ip_version = QED_TCP_IPV4;
1720
1721 ip_hlen = (iph->ihl) * sizeof(u32);
1722 *payload_len = ntohs(iph->tot_len) - ip_hlen;
1723 } else if (eth_type == ETH_P_IPV6) {
1724 ip6h = (struct ipv6hdr *)iph;
1725
1726 if (ip6h->nexthdr != IPPROTO_TCP) {
1727 DP_NOTICE(p_hwfn,
1728 "Unexpected ip protocol on ll2 %x\n",
1729 iph->protocol);
1730 return -EINVAL;
1731 }
1732
1733 for (i = 0; i < 4; i++) {
1734 cm_info->local_ip[i] =
1735 ntohl(ip6h->daddr.in6_u.u6_addr32[i]);
1736 cm_info->remote_ip[i] =
1737 ntohl(ip6h->saddr.in6_u.u6_addr32[i]);
1738 }
1739 cm_info->ip_version = QED_TCP_IPV6;
1740
1741 ip_hlen = sizeof(*ip6h);
1742 *payload_len = ntohs(ip6h->payload_len);
1743 } else {
1744 DP_NOTICE(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type);
1745 return -EINVAL;
1746 }
1747
1748 tcph = (struct tcphdr *)((u8 *)iph + ip_hlen);
1749
1750 if (!tcph->syn) {
1751 DP_NOTICE(p_hwfn,
1752 "Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n",
1753 iph->ihl, tcph->source, tcph->dest);
1754 return -EINVAL;
1755 }
1756
1757 cm_info->local_port = ntohs(tcph->dest);
1758 cm_info->remote_port = ntohs(tcph->source);
1759
1760 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1761
1762 *tcp_start_offset = eth_hlen + ip_hlen;
1763
1764 return 0;
1765 }
1766
1767 static struct qed_iwarp_fpdu *qed_iwarp_get_curr_fpdu(struct qed_hwfn *p_hwfn,
1768 u16 cid)
1769 {
1770 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1771 struct qed_iwarp_fpdu *partial_fpdu;
1772 u32 idx;
1773
1774 idx = cid - qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP);
1775 if (idx >= iwarp_info->max_num_partial_fpdus) {
1776 DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid,
1777 iwarp_info->max_num_partial_fpdus);
1778 return NULL;
1779 }
1780
1781 partial_fpdu = &iwarp_info->partial_fpdus[idx];
1782
1783 return partial_fpdu;
1784 }
1785
1786 enum qed_iwarp_mpa_pkt_type {
1787 QED_IWARP_MPA_PKT_PACKED,
1788 QED_IWARP_MPA_PKT_PARTIAL,
1789 QED_IWARP_MPA_PKT_UNALIGNED
1790 };
1791
1792 #define QED_IWARP_INVALID_FPDU_LENGTH 0xffff
1793 #define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2)
1794 #define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4)
1795
1796 /* Pad to multiple of 4 */
1797 #define QED_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) ALIGN(data_len, 4)
1798 #define QED_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \
1799 (QED_IWARP_PDU_DATA_LEN_WITH_PAD((_mpa_len) + \
1800 QED_IWARP_MPA_FPDU_LENGTH_SIZE) + \
1801 QED_IWARP_MPA_CRC32_DIGEST_SIZE)
1802
1803 /* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */
1804 #define QED_IWARP_MAX_BDS_PER_FPDU 3
1805
1806 static const char * const pkt_type_str[] = {
1807 "QED_IWARP_MPA_PKT_PACKED",
1808 "QED_IWARP_MPA_PKT_PARTIAL",
1809 "QED_IWARP_MPA_PKT_UNALIGNED"
1810 };
1811
1812 static int
1813 qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
1814 struct qed_iwarp_fpdu *fpdu,
1815 struct qed_iwarp_ll2_buff *buf);
1816
1817 static enum qed_iwarp_mpa_pkt_type
1818 qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn,
1819 struct qed_iwarp_fpdu *fpdu,
1820 u16 tcp_payload_len, u8 *mpa_data)
1821 {
1822 enum qed_iwarp_mpa_pkt_type pkt_type;
1823 u16 mpa_len;
1824
1825 if (fpdu->incomplete_bytes) {
1826 pkt_type = QED_IWARP_MPA_PKT_UNALIGNED;
1827 goto out;
1828 }
1829
1830 /* special case of one byte remaining...
1831 * lower byte will be read next packet
1832 */
1833 if (tcp_payload_len == 1) {
1834 fpdu->fpdu_length = *mpa_data << BITS_PER_BYTE;
1835 pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
1836 goto out;
1837 }
1838
1839 mpa_len = ntohs(*(__force __be16 *)mpa_data);
1840 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
1841
1842 if (fpdu->fpdu_length <= tcp_payload_len)
1843 pkt_type = QED_IWARP_MPA_PKT_PACKED;
1844 else
1845 pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
1846
1847 out:
1848 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1849 "MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n",
1850 pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len);
1851
1852 return pkt_type;
1853 }
1854
1855 static void
1856 qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf,
1857 struct qed_iwarp_fpdu *fpdu,
1858 struct unaligned_opaque_data *pkt_data,
1859 u16 tcp_payload_size, u8 placement_offset)
1860 {
1861 u16 first_mpa_offset = le16_to_cpu(pkt_data->first_mpa_offset);
1862
1863 fpdu->mpa_buf = buf;
1864 fpdu->pkt_hdr = buf->data_phys_addr + placement_offset;
1865 fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset;
1866 fpdu->mpa_frag = buf->data_phys_addr + first_mpa_offset;
1867 fpdu->mpa_frag_virt = (u8 *)(buf->data) + first_mpa_offset;
1868
1869 if (tcp_payload_size == 1)
1870 fpdu->incomplete_bytes = QED_IWARP_INVALID_FPDU_LENGTH;
1871 else if (tcp_payload_size < fpdu->fpdu_length)
1872 fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size;
1873 else
1874 fpdu->incomplete_bytes = 0; /* complete fpdu */
1875
1876 fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes;
1877 }
1878
1879 static int
1880 qed_iwarp_cp_pkt(struct qed_hwfn *p_hwfn,
1881 struct qed_iwarp_fpdu *fpdu,
1882 struct unaligned_opaque_data *pkt_data,
1883 struct qed_iwarp_ll2_buff *buf, u16 tcp_payload_size)
1884 {
1885 u16 first_mpa_offset = le16_to_cpu(pkt_data->first_mpa_offset);
1886 u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf;
1887 int rc;
1888
1889 /* need to copy the data from the partial packet stored in fpdu
1890 * to the new buf, for this we also need to move the data currently
1891 * placed on the buf. The assumption is that the buffer is big enough
1892 * since fpdu_length <= mss, we use an intermediate buffer since
1893 * we may need to copy the new data to an overlapping location
1894 */
1895 if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) {
1896 DP_ERR(p_hwfn,
1897 "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",
1898 buf->buff_size, fpdu->mpa_frag_len,
1899 tcp_payload_size, fpdu->incomplete_bytes);
1900 return -EINVAL;
1901 }
1902
1903 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1904 "MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n",
1905 fpdu->mpa_frag_virt, fpdu->mpa_frag_len,
1906 (u8 *)(buf->data) + first_mpa_offset, tcp_payload_size);
1907
1908 memcpy(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len);
1909 memcpy(tmp_buf + fpdu->mpa_frag_len,
1910 (u8 *)(buf->data) + first_mpa_offset, tcp_payload_size);
1911
1912 rc = qed_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf);
1913 if (rc)
1914 return rc;
1915
1916 /* If we managed to post the buffer copy the data to the new buffer
1917 * o/w this will occur in the next round...
1918 */
1919 memcpy((u8 *)(buf->data), tmp_buf,
1920 fpdu->mpa_frag_len + tcp_payload_size);
1921
1922 fpdu->mpa_buf = buf;
1923 /* fpdu->pkt_hdr remains as is */
1924 /* fpdu->mpa_frag is overridden with new buf */
1925 fpdu->mpa_frag = buf->data_phys_addr;
1926 fpdu->mpa_frag_virt = buf->data;
1927 fpdu->mpa_frag_len += tcp_payload_size;
1928
1929 fpdu->incomplete_bytes -= tcp_payload_size;
1930
1931 DP_VERBOSE(p_hwfn,
1932 QED_MSG_RDMA,
1933 "MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n",
1934 buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size,
1935 fpdu->incomplete_bytes);
1936
1937 return 0;
1938 }
1939
1940 static void
1941 qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn,
1942 struct qed_iwarp_fpdu *fpdu, u8 *mpa_data)
1943 {
1944 u16 mpa_len;
1945
1946 /* Update incomplete packets if needed */
1947 if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) {
1948 /* Missing lower byte is now available */
1949 mpa_len = fpdu->fpdu_length | *mpa_data;
1950 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
1951 /* one byte of hdr */
1952 fpdu->mpa_frag_len = 1;
1953 fpdu->incomplete_bytes = fpdu->fpdu_length - 1;
1954 DP_VERBOSE(p_hwfn,
1955 QED_MSG_RDMA,
1956 "MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n",
1957 mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes);
1958 }
1959 }
1960
1961 #define QED_IWARP_IS_RIGHT_EDGE(_curr_pkt) \
1962 (GET_FIELD((_curr_pkt)->flags, \
1963 UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE))
1964
1965 /* This function is used to recycle a buffer using the ll2 drop option. It
1966 * uses the mechanism to ensure that all buffers posted to tx before this one
1967 * were completed. The buffer sent here will be sent as a cookie in the tx
1968 * completion function and can then be reposted to rx chain when done. The flow
1969 * that requires this is the flow where a FPDU splits over more than 3 tcp
1970 * segments. In this case the driver needs to re-post a rx buffer instead of
1971 * the one received, but driver can't simply repost a buffer it copied from
1972 * as there is a case where the buffer was originally a packed FPDU, and is
1973 * partially posted to FW. Driver needs to ensure FW is done with it.
1974 */
1975 static int
1976 qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
1977 struct qed_iwarp_fpdu *fpdu,
1978 struct qed_iwarp_ll2_buff *buf)
1979 {
1980 struct qed_ll2_tx_pkt_info tx_pkt;
1981 u8 ll2_handle;
1982 int rc;
1983
1984 memset(&tx_pkt, 0, sizeof(tx_pkt));
1985 tx_pkt.num_of_bds = 1;
1986 tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP;
1987 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
1988 tx_pkt.first_frag = fpdu->pkt_hdr;
1989 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
1990 buf->piggy_buf = NULL;
1991 tx_pkt.cookie = buf;
1992
1993 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
1994
1995 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
1996 if (rc)
1997 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1998 "Can't drop packet rc=%d\n", rc);
1999
2000 DP_VERBOSE(p_hwfn,
2001 QED_MSG_RDMA,
2002 "MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n",
2003 (unsigned long int)tx_pkt.first_frag,
2004 tx_pkt.first_frag_len, buf, rc);
2005
2006 return rc;
2007 }
2008
2009 static int
2010 qed_iwarp_win_right_edge(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu)
2011 {
2012 struct qed_ll2_tx_pkt_info tx_pkt;
2013 u8 ll2_handle;
2014 int rc;
2015
2016 memset(&tx_pkt, 0, sizeof(tx_pkt));
2017 tx_pkt.num_of_bds = 1;
2018 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2019 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
2020
2021 tx_pkt.first_frag = fpdu->pkt_hdr;
2022 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
2023 tx_pkt.enable_ip_cksum = true;
2024 tx_pkt.enable_l4_cksum = true;
2025 tx_pkt.calc_ip_len = true;
2026 /* vlan overload with enum iwarp_ll2_tx_queues */
2027 tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE;
2028
2029 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2030
2031 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2032 if (rc)
2033 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2034 "Can't send right edge rc=%d\n", rc);
2035 DP_VERBOSE(p_hwfn,
2036 QED_MSG_RDMA,
2037 "MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n",
2038 tx_pkt.num_of_bds,
2039 (unsigned long int)tx_pkt.first_frag,
2040 tx_pkt.first_frag_len, rc);
2041
2042 return rc;
2043 }
2044
2045 static int
2046 qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn,
2047 struct qed_iwarp_fpdu *fpdu,
2048 struct unaligned_opaque_data *curr_pkt,
2049 struct qed_iwarp_ll2_buff *buf,
2050 u16 tcp_payload_size, enum qed_iwarp_mpa_pkt_type pkt_type)
2051 {
2052 struct qed_ll2_tx_pkt_info tx_pkt;
2053 u16 first_mpa_offset;
2054 u8 ll2_handle;
2055 int rc;
2056
2057 memset(&tx_pkt, 0, sizeof(tx_pkt));
2058
2059 /* An unaligned packet means it's split over two tcp segments. So the
2060 * complete packet requires 3 bds, one for the header, one for the
2061 * part of the fpdu of the first tcp segment, and the last fragment
2062 * will point to the remainder of the fpdu. A packed pdu, requires only
2063 * two bds, one for the header and one for the data.
2064 */
2065 tx_pkt.num_of_bds = (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2;
2066 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2067 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; /* offset in words */
2068
2069 /* Send the mpa_buf only with the last fpdu (in case of packed) */
2070 if (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED ||
2071 tcp_payload_size <= fpdu->fpdu_length)
2072 tx_pkt.cookie = fpdu->mpa_buf;
2073
2074 tx_pkt.first_frag = fpdu->pkt_hdr;
2075 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
2076 tx_pkt.enable_ip_cksum = true;
2077 tx_pkt.enable_l4_cksum = true;
2078 tx_pkt.calc_ip_len = true;
2079 /* vlan overload with enum iwarp_ll2_tx_queues */
2080 tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE;
2081
2082 /* special case of unaligned packet and not packed, need to send
2083 * both buffers as cookie to release.
2084 */
2085 if (tcp_payload_size == fpdu->incomplete_bytes)
2086 fpdu->mpa_buf->piggy_buf = buf;
2087
2088 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2089
2090 /* Set first fragment to header */
2091 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2092 if (rc)
2093 goto out;
2094
2095 /* Set second fragment to first part of packet */
2096 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle,
2097 fpdu->mpa_frag,
2098 fpdu->mpa_frag_len);
2099 if (rc)
2100 goto out;
2101
2102 if (!fpdu->incomplete_bytes)
2103 goto out;
2104
2105 first_mpa_offset = le16_to_cpu(curr_pkt->first_mpa_offset);
2106
2107 /* Set third fragment to second part of the packet */
2108 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn,
2109 ll2_handle,
2110 buf->data_phys_addr +
2111 first_mpa_offset,
2112 fpdu->incomplete_bytes);
2113 out:
2114 DP_VERBOSE(p_hwfn,
2115 QED_MSG_RDMA,
2116 "MPA_ALIGN: Sent FPDU num_bds=%d first_frag_len=%x, mpa_frag_len=0x%x, incomplete_bytes:0x%x rc=%d\n",
2117 tx_pkt.num_of_bds,
2118 tx_pkt.first_frag_len,
2119 fpdu->mpa_frag_len,
2120 fpdu->incomplete_bytes, rc);
2121
2122 return rc;
2123 }
2124
2125 static void
2126 qed_iwarp_mpa_get_data(struct qed_hwfn *p_hwfn,
2127 struct unaligned_opaque_data *curr_pkt,
2128 u32 opaque_data0, u32 opaque_data1)
2129 {
2130 u64 opaque_data;
2131
2132 opaque_data = HILO_64(cpu_to_le32(opaque_data1),
2133 cpu_to_le32(opaque_data0));
2134 *curr_pkt = *((struct unaligned_opaque_data *)&opaque_data);
2135
2136 le16_add_cpu(&curr_pkt->first_mpa_offset,
2137 curr_pkt->tcp_payload_offset);
2138 }
2139
2140 /* This function is called when an unaligned or incomplete MPA packet arrives
2141 * driver needs to align the packet, perhaps using previous data and send
2142 * it down to FW once it is aligned.
2143 */
2144 static int
2145 qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn,
2146 struct qed_iwarp_ll2_mpa_buf *mpa_buf)
2147 {
2148 struct unaligned_opaque_data *curr_pkt = &mpa_buf->data;
2149 struct qed_iwarp_ll2_buff *buf = mpa_buf->ll2_buf;
2150 enum qed_iwarp_mpa_pkt_type pkt_type;
2151 struct qed_iwarp_fpdu *fpdu;
2152 u16 cid, first_mpa_offset;
2153 int rc = -EINVAL;
2154 u8 *mpa_data;
2155
2156 cid = le32_to_cpu(curr_pkt->cid);
2157
2158 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)cid);
2159 if (!fpdu) { /* something corrupt with cid, post rx back */
2160 DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n",
2161 cid);
2162 goto err;
2163 }
2164
2165 do {
2166 first_mpa_offset = le16_to_cpu(curr_pkt->first_mpa_offset);
2167 mpa_data = ((u8 *)(buf->data) + first_mpa_offset);
2168
2169 pkt_type = qed_iwarp_mpa_classify(p_hwfn, fpdu,
2170 mpa_buf->tcp_payload_len,
2171 mpa_data);
2172
2173 switch (pkt_type) {
2174 case QED_IWARP_MPA_PKT_PARTIAL:
2175 qed_iwarp_init_fpdu(buf, fpdu,
2176 curr_pkt,
2177 mpa_buf->tcp_payload_len,
2178 mpa_buf->placement_offset);
2179
2180 if (!QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
2181 mpa_buf->tcp_payload_len = 0;
2182 break;
2183 }
2184
2185 rc = qed_iwarp_win_right_edge(p_hwfn, fpdu);
2186
2187 if (rc) {
2188 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2189 "Can't send FPDU:reset rc=%d\n", rc);
2190 memset(fpdu, 0, sizeof(*fpdu));
2191 break;
2192 }
2193
2194 mpa_buf->tcp_payload_len = 0;
2195 break;
2196 case QED_IWARP_MPA_PKT_PACKED:
2197 qed_iwarp_init_fpdu(buf, fpdu,
2198 curr_pkt,
2199 mpa_buf->tcp_payload_len,
2200 mpa_buf->placement_offset);
2201
2202 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
2203 mpa_buf->tcp_payload_len,
2204 pkt_type);
2205 if (rc) {
2206 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2207 "Can't send FPDU:reset rc=%d\n", rc);
2208 memset(fpdu, 0, sizeof(*fpdu));
2209 break;
2210 }
2211
2212 mpa_buf->tcp_payload_len -= fpdu->fpdu_length;
2213 le16_add_cpu(&curr_pkt->first_mpa_offset,
2214 fpdu->fpdu_length);
2215 break;
2216 case QED_IWARP_MPA_PKT_UNALIGNED:
2217 qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data);
2218 if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) {
2219 /* special handling of fpdu split over more
2220 * than 2 segments
2221 */
2222 if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
2223 rc = qed_iwarp_win_right_edge(p_hwfn,
2224 fpdu);
2225 /* packet will be re-processed later */
2226 if (rc)
2227 return rc;
2228 }
2229
2230 rc = qed_iwarp_cp_pkt(p_hwfn, fpdu, curr_pkt,
2231 buf,
2232 mpa_buf->tcp_payload_len);
2233 if (rc) /* packet will be re-processed later */
2234 return rc;
2235
2236 mpa_buf->tcp_payload_len = 0;
2237 break;
2238 }
2239
2240 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
2241 mpa_buf->tcp_payload_len,
2242 pkt_type);
2243 if (rc) {
2244 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2245 "Can't send FPDU:delay rc=%d\n", rc);
2246 /* don't reset fpdu -> we need it for next
2247 * classify
2248 */
2249 break;
2250 }
2251
2252 mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes;
2253 le16_add_cpu(&curr_pkt->first_mpa_offset,
2254 fpdu->incomplete_bytes);
2255
2256 /* The framed PDU was sent - no more incomplete bytes */
2257 fpdu->incomplete_bytes = 0;
2258 break;
2259 }
2260 } while (mpa_buf->tcp_payload_len && !rc);
2261
2262 return rc;
2263
2264 err:
2265 qed_iwarp_ll2_post_rx(p_hwfn,
2266 buf,
2267 p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle);
2268 return rc;
2269 }
2270
2271 static void qed_iwarp_process_pending_pkts(struct qed_hwfn *p_hwfn)
2272 {
2273 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2274 struct qed_iwarp_ll2_mpa_buf *mpa_buf = NULL;
2275 int rc;
2276
2277 while (!list_empty(&iwarp_info->mpa_buf_pending_list)) {
2278 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_pending_list,
2279 struct qed_iwarp_ll2_mpa_buf,
2280 list_entry);
2281
2282 rc = qed_iwarp_process_mpa_pkt(p_hwfn, mpa_buf);
2283
2284 /* busy means break and continue processing later, don't
2285 * remove the buf from the pending list.
2286 */
2287 if (rc == -EBUSY)
2288 break;
2289
2290 list_move_tail(&mpa_buf->list_entry,
2291 &iwarp_info->mpa_buf_list);
2292
2293 if (rc) { /* different error, don't continue */
2294 DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc);
2295 break;
2296 }
2297 }
2298 }
2299
2300 static void
2301 qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
2302 {
2303 struct qed_iwarp_ll2_mpa_buf *mpa_buf;
2304 struct qed_iwarp_info *iwarp_info;
2305 struct qed_hwfn *p_hwfn = cxt;
2306 u16 first_mpa_offset;
2307
2308 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2309 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_list,
2310 struct qed_iwarp_ll2_mpa_buf, list_entry);
2311 if (!mpa_buf) {
2312 DP_ERR(p_hwfn, "No free mpa buf\n");
2313 goto err;
2314 }
2315
2316 list_del(&mpa_buf->list_entry);
2317 qed_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data,
2318 data->opaque_data_0, data->opaque_data_1);
2319
2320 first_mpa_offset = le16_to_cpu(mpa_buf->data.first_mpa_offset);
2321
2322 DP_VERBOSE(p_hwfn,
2323 QED_MSG_RDMA,
2324 "LL2 MPA CompRx payload_len:0x%x\tfirst_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n",
2325 data->length.packet_length, first_mpa_offset,
2326 mpa_buf->data.tcp_payload_offset, mpa_buf->data.flags,
2327 mpa_buf->data.cid);
2328
2329 mpa_buf->ll2_buf = data->cookie;
2330 mpa_buf->tcp_payload_len = data->length.packet_length -
2331 first_mpa_offset;
2332
2333 first_mpa_offset += data->u.placement_offset;
2334 mpa_buf->data.first_mpa_offset = cpu_to_le16(first_mpa_offset);
2335 mpa_buf->placement_offset = data->u.placement_offset;
2336
2337 list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_pending_list);
2338
2339 qed_iwarp_process_pending_pkts(p_hwfn);
2340 return;
2341 err:
2342 qed_iwarp_ll2_post_rx(p_hwfn, data->cookie,
2343 iwarp_info->ll2_mpa_handle);
2344 }
2345
2346 static void
2347 qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
2348 {
2349 struct qed_iwarp_ll2_buff *buf = data->cookie;
2350 struct qed_iwarp_listener *listener;
2351 struct qed_ll2_tx_pkt_info tx_pkt;
2352 struct qed_iwarp_cm_info cm_info;
2353 struct qed_hwfn *p_hwfn = cxt;
2354 u8 remote_mac_addr[ETH_ALEN];
2355 u8 local_mac_addr[ETH_ALEN];
2356 struct qed_iwarp_ep *ep;
2357 int tcp_start_offset;
2358 u8 ll2_syn_handle;
2359 int payload_len;
2360 u32 hdr_size;
2361 int rc;
2362
2363 memset(&cm_info, 0, sizeof(cm_info));
2364 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
2365
2366 /* Check if packet was received with errors... */
2367 if (data->err_flags) {
2368 DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n",
2369 data->err_flags);
2370 goto err;
2371 }
2372
2373 if (GET_FIELD(data->parse_flags,
2374 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) &&
2375 GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) {
2376 DP_NOTICE(p_hwfn, "Syn packet received with checksum error\n");
2377 goto err;
2378 }
2379
2380 rc = qed_iwarp_parse_rx_pkt(p_hwfn, &cm_info, (u8 *)(buf->data) +
2381 data->u.placement_offset, remote_mac_addr,
2382 local_mac_addr, &payload_len,
2383 &tcp_start_offset);
2384 if (rc)
2385 goto err;
2386
2387 /* Check if there is a listener for this 4-tuple+vlan */
2388 listener = qed_iwarp_get_listener(p_hwfn, &cm_info);
2389 if (!listener) {
2390 DP_VERBOSE(p_hwfn,
2391 QED_MSG_RDMA,
2392 "SYN received on tuple not listened on parse_flags=%d packet len=%d\n",
2393 data->parse_flags, data->length.packet_length);
2394
2395 memset(&tx_pkt, 0, sizeof(tx_pkt));
2396 tx_pkt.num_of_bds = 1;
2397 tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2;
2398 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2399 tx_pkt.first_frag = buf->data_phys_addr +
2400 data->u.placement_offset;
2401 tx_pkt.first_frag_len = data->length.packet_length;
2402 tx_pkt.cookie = buf;
2403
2404 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_syn_handle,
2405 &tx_pkt, true);
2406
2407 if (rc) {
2408 DP_NOTICE(p_hwfn,
2409 "Can't post SYN back to chip rc=%d\n", rc);
2410 goto err;
2411 }
2412 return;
2413 }
2414
2415 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n");
2416 /* There may be an open ep on this connection if this is a syn
2417 * retrasnmit... need to make sure there isn't...
2418 */
2419 if (qed_iwarp_ep_exists(p_hwfn, &cm_info))
2420 goto err;
2421
2422 ep = qed_iwarp_get_free_ep(p_hwfn);
2423 if (!ep)
2424 goto err;
2425
2426 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2427 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
2428 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2429
2430 ether_addr_copy(ep->remote_mac_addr, remote_mac_addr);
2431 ether_addr_copy(ep->local_mac_addr, local_mac_addr);
2432
2433 memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info));
2434
2435 hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60);
2436 ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size;
2437 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
2438
2439 ep->event_cb = listener->event_cb;
2440 ep->cb_context = listener->cb_context;
2441 ep->connect_mode = TCP_CONNECT_PASSIVE;
2442
2443 ep->syn = buf;
2444 ep->syn_ip_payload_length = (u16)payload_len;
2445 ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset +
2446 tcp_start_offset;
2447
2448 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
2449 if (rc) {
2450 qed_iwarp_return_ep(p_hwfn, ep);
2451 goto err;
2452 }
2453
2454 return;
2455 err:
2456 qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle);
2457 }
2458
2459 static void qed_iwarp_ll2_rel_rx_pkt(void *cxt, u8 connection_handle,
2460 void *cookie, dma_addr_t rx_buf_addr,
2461 bool b_last_packet)
2462 {
2463 struct qed_iwarp_ll2_buff *buffer = cookie;
2464 struct qed_hwfn *p_hwfn = cxt;
2465
2466 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
2467 buffer->data, buffer->data_phys_addr);
2468 kfree(buffer);
2469 }
2470
2471 static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle,
2472 void *cookie, dma_addr_t first_frag_addr,
2473 bool b_last_fragment, bool b_last_packet)
2474 {
2475 struct qed_iwarp_ll2_buff *buffer = cookie;
2476 struct qed_iwarp_ll2_buff *piggy;
2477 struct qed_hwfn *p_hwfn = cxt;
2478
2479 if (!buffer) /* can happen in packed mpa unaligned... */
2480 return;
2481
2482 /* this was originally an rx packet, post it back */
2483 piggy = buffer->piggy_buf;
2484 if (piggy) {
2485 buffer->piggy_buf = NULL;
2486 qed_iwarp_ll2_post_rx(p_hwfn, piggy, connection_handle);
2487 }
2488
2489 qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle);
2490
2491 if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle)
2492 qed_iwarp_process_pending_pkts(p_hwfn);
2493
2494 return;
2495 }
2496
2497 static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle,
2498 void *cookie, dma_addr_t first_frag_addr,
2499 bool b_last_fragment, bool b_last_packet)
2500 {
2501 struct qed_iwarp_ll2_buff *buffer = cookie;
2502 struct qed_hwfn *p_hwfn = cxt;
2503
2504 if (!buffer)
2505 return;
2506
2507 if (buffer->piggy_buf) {
2508 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
2509 buffer->piggy_buf->buff_size,
2510 buffer->piggy_buf->data,
2511 buffer->piggy_buf->data_phys_addr);
2512
2513 kfree(buffer->piggy_buf);
2514 }
2515
2516 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
2517 buffer->data, buffer->data_phys_addr);
2518
2519 kfree(buffer);
2520 }
2521
2522 /* The only slowpath for iwarp ll2 is unalign flush. When this completion
2523 * is received, need to reset the FPDU.
2524 */
2525 static void
2526 qed_iwarp_ll2_slowpath(void *cxt,
2527 u8 connection_handle,
2528 u32 opaque_data_0, u32 opaque_data_1)
2529 {
2530 struct unaligned_opaque_data unalign_data;
2531 struct qed_hwfn *p_hwfn = cxt;
2532 struct qed_iwarp_fpdu *fpdu;
2533 u32 cid;
2534
2535 qed_iwarp_mpa_get_data(p_hwfn, &unalign_data,
2536 opaque_data_0, opaque_data_1);
2537
2538 cid = le32_to_cpu(unalign_data.cid);
2539
2540 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "(0x%x) Flush fpdu\n", cid);
2541
2542 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)cid);
2543 if (fpdu)
2544 memset(fpdu, 0, sizeof(*fpdu));
2545 }
2546
2547 static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn)
2548 {
2549 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2550 int rc = 0;
2551
2552 if (iwarp_info->ll2_syn_handle != QED_IWARP_HANDLE_INVAL) {
2553 rc = qed_ll2_terminate_connection(p_hwfn,
2554 iwarp_info->ll2_syn_handle);
2555 if (rc)
2556 DP_INFO(p_hwfn, "Failed to terminate syn connection\n");
2557
2558 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_syn_handle);
2559 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
2560 }
2561
2562 if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) {
2563 rc = qed_ll2_terminate_connection(p_hwfn,
2564 iwarp_info->ll2_ooo_handle);
2565 if (rc)
2566 DP_INFO(p_hwfn, "Failed to terminate ooo connection\n");
2567
2568 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
2569 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
2570 }
2571
2572 if (iwarp_info->ll2_mpa_handle != QED_IWARP_HANDLE_INVAL) {
2573 rc = qed_ll2_terminate_connection(p_hwfn,
2574 iwarp_info->ll2_mpa_handle);
2575 if (rc)
2576 DP_INFO(p_hwfn, "Failed to terminate mpa connection\n");
2577
2578 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
2579 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
2580 }
2581
2582 qed_llh_remove_mac_filter(p_hwfn->cdev, 0,
2583 p_hwfn->p_rdma_info->iwarp.mac_addr);
2584
2585 return rc;
2586 }
2587
2588 static int
2589 qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn,
2590 int num_rx_bufs, int buff_size, u8 ll2_handle)
2591 {
2592 struct qed_iwarp_ll2_buff *buffer;
2593 int rc = 0;
2594 int i;
2595
2596 for (i = 0; i < num_rx_bufs; i++) {
2597 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
2598 if (!buffer) {
2599 rc = -ENOMEM;
2600 break;
2601 }
2602
2603 buffer->data = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
2604 buff_size,
2605 &buffer->data_phys_addr,
2606 GFP_KERNEL);
2607 if (!buffer->data) {
2608 kfree(buffer);
2609 rc = -ENOMEM;
2610 break;
2611 }
2612
2613 buffer->buff_size = buff_size;
2614 rc = qed_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle);
2615 if (rc)
2616 /* buffers will be deallocated by qed_ll2 */
2617 break;
2618 }
2619 return rc;
2620 }
2621
2622 #define QED_IWARP_MAX_BUF_SIZE(mtu) \
2623 ALIGN((mtu) + ETH_HLEN + 2 * VLAN_HLEN + 2 + ETH_CACHE_LINE_SIZE, \
2624 ETH_CACHE_LINE_SIZE)
2625
2626 static int
2627 qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
2628 struct qed_rdma_start_in_params *params,
2629 u32 rcv_wnd_size)
2630 {
2631 struct qed_iwarp_info *iwarp_info;
2632 struct qed_ll2_acquire_data data;
2633 struct qed_ll2_cbs cbs;
2634 u32 buff_size;
2635 u16 n_ooo_bufs;
2636 int rc = 0;
2637 int i;
2638
2639 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2640 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
2641 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
2642 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
2643
2644 iwarp_info->max_mtu = params->max_mtu;
2645
2646 ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr);
2647
2648 rc = qed_llh_add_mac_filter(p_hwfn->cdev, 0, params->mac_addr);
2649 if (rc)
2650 return rc;
2651
2652 /* Start SYN connection */
2653 cbs.rx_comp_cb = qed_iwarp_ll2_comp_syn_pkt;
2654 cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt;
2655 cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt;
2656 cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt;
2657 cbs.slowpath_cb = NULL;
2658 cbs.cookie = p_hwfn;
2659
2660 memset(&data, 0, sizeof(data));
2661 data.input.conn_type = QED_LL2_TYPE_IWARP;
2662 /* SYN will use ctx based queues */
2663 data.input.rx_conn_type = QED_LL2_RX_TYPE_CTX;
2664 data.input.mtu = params->max_mtu;
2665 data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE;
2666 data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE;
2667 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
2668 data.input.tx_tc = PKT_LB_TC;
2669 data.input.tx_dest = QED_LL2_TX_DEST_LB;
2670 data.p_connection_handle = &iwarp_info->ll2_syn_handle;
2671 data.cbs = &cbs;
2672
2673 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2674 if (rc) {
2675 DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n");
2676 qed_llh_remove_mac_filter(p_hwfn->cdev, 0, params->mac_addr);
2677 return rc;
2678 }
2679
2680 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle);
2681 if (rc) {
2682 DP_NOTICE(p_hwfn, "Failed to establish LL2 connection\n");
2683 goto err;
2684 }
2685
2686 buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu);
2687 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
2688 QED_IWARP_LL2_SYN_RX_SIZE,
2689 buff_size,
2690 iwarp_info->ll2_syn_handle);
2691 if (rc)
2692 goto err;
2693
2694 /* Start OOO connection */
2695 data.input.conn_type = QED_LL2_TYPE_OOO;
2696 /* OOO/unaligned will use legacy ll2 queues (ram based) */
2697 data.input.rx_conn_type = QED_LL2_RX_TYPE_LEGACY;
2698 data.input.mtu = params->max_mtu;
2699
2700 n_ooo_bufs = (QED_IWARP_MAX_OOO * rcv_wnd_size) /
2701 iwarp_info->max_mtu;
2702 n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE);
2703
2704 data.input.rx_num_desc = n_ooo_bufs;
2705 data.input.rx_num_ooo_buffers = n_ooo_bufs;
2706
2707 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
2708 data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE;
2709 data.p_connection_handle = &iwarp_info->ll2_ooo_handle;
2710
2711 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2712 if (rc)
2713 goto err;
2714
2715 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
2716 if (rc)
2717 goto err;
2718
2719 /* Start Unaligned MPA connection */
2720 cbs.rx_comp_cb = qed_iwarp_ll2_comp_mpa_pkt;
2721 cbs.slowpath_cb = qed_iwarp_ll2_slowpath;
2722
2723 memset(&data, 0, sizeof(data));
2724 data.input.conn_type = QED_LL2_TYPE_IWARP;
2725 data.input.mtu = params->max_mtu;
2726 /* FW requires that once a packet arrives OOO, it must have at
2727 * least 2 rx buffers available on the unaligned connection
2728 * for handling the case that it is a partial fpdu.
2729 */
2730 data.input.rx_num_desc = n_ooo_bufs * 2;
2731 data.input.tx_num_desc = data.input.rx_num_desc;
2732 data.input.tx_max_bds_per_packet = QED_IWARP_MAX_BDS_PER_FPDU;
2733 data.input.tx_tc = PKT_LB_TC;
2734 data.input.tx_dest = QED_LL2_TX_DEST_LB;
2735 data.p_connection_handle = &iwarp_info->ll2_mpa_handle;
2736 data.input.secondary_queue = true;
2737 data.cbs = &cbs;
2738
2739 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2740 if (rc)
2741 goto err;
2742
2743 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
2744 if (rc)
2745 goto err;
2746
2747 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
2748 data.input.rx_num_desc,
2749 buff_size,
2750 iwarp_info->ll2_mpa_handle);
2751 if (rc)
2752 goto err;
2753
2754 iwarp_info->partial_fpdus = kcalloc((u16)p_hwfn->p_rdma_info->num_qps,
2755 sizeof(*iwarp_info->partial_fpdus),
2756 GFP_KERNEL);
2757 if (!iwarp_info->partial_fpdus) {
2758 rc = -ENOMEM;
2759 goto err;
2760 }
2761
2762 iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps;
2763
2764 iwarp_info->mpa_intermediate_buf = kzalloc(buff_size, GFP_KERNEL);
2765 if (!iwarp_info->mpa_intermediate_buf) {
2766 rc = -ENOMEM;
2767 goto err;
2768 }
2769
2770 /* The mpa_bufs array serves for pending RX packets received on the
2771 * mpa ll2 that don't have place on the tx ring and require later
2772 * processing. We can't fail on allocation of such a struct therefore
2773 * we allocate enough to take care of all rx packets
2774 */
2775 iwarp_info->mpa_bufs = kcalloc(data.input.rx_num_desc,
2776 sizeof(*iwarp_info->mpa_bufs),
2777 GFP_KERNEL);
2778 if (!iwarp_info->mpa_bufs) {
2779 rc = -ENOMEM;
2780 goto err;
2781 }
2782
2783 INIT_LIST_HEAD(&iwarp_info->mpa_buf_pending_list);
2784 INIT_LIST_HEAD(&iwarp_info->mpa_buf_list);
2785 for (i = 0; i < data.input.rx_num_desc; i++)
2786 list_add_tail(&iwarp_info->mpa_bufs[i].list_entry,
2787 &iwarp_info->mpa_buf_list);
2788 return rc;
2789 err:
2790 qed_iwarp_ll2_stop(p_hwfn);
2791
2792 return rc;
2793 }
2794
2795 static struct {
2796 u32 two_ports;
2797 u32 four_ports;
2798 } qed_iwarp_rcv_wnd_size[MAX_CHIP_IDS] = {
2799 {QED_IWARP_RCV_WND_SIZE_DEF_BB_2P, QED_IWARP_RCV_WND_SIZE_DEF_BB_4P},
2800 {QED_IWARP_RCV_WND_SIZE_DEF_AH_2P, QED_IWARP_RCV_WND_SIZE_DEF_AH_4P}
2801 };
2802
2803 int qed_iwarp_setup(struct qed_hwfn *p_hwfn,
2804 struct qed_rdma_start_in_params *params)
2805 {
2806 struct qed_dev *cdev = p_hwfn->cdev;
2807 struct qed_iwarp_info *iwarp_info;
2808 enum chip_ids chip_id;
2809 u32 rcv_wnd_size;
2810
2811 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2812
2813 iwarp_info->tcp_flags = QED_IWARP_TS_EN;
2814
2815 chip_id = QED_IS_BB(cdev) ? CHIP_BB : CHIP_K2;
2816 rcv_wnd_size = (qed_device_num_ports(cdev) == 4) ?
2817 qed_iwarp_rcv_wnd_size[chip_id].four_ports :
2818 qed_iwarp_rcv_wnd_size[chip_id].two_ports;
2819
2820 /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */
2821 iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) -
2822 ilog2(QED_IWARP_RCV_WND_SIZE_MIN);
2823 iwarp_info->rcv_wnd_size = rcv_wnd_size >> iwarp_info->rcv_wnd_scale;
2824 iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED;
2825 iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
2826
2827 iwarp_info->peer2peer = QED_IWARP_PARAM_P2P;
2828
2829 iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND |
2830 MPA_RTR_TYPE_ZERO_WRITE |
2831 MPA_RTR_TYPE_ZERO_READ;
2832
2833 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock);
2834 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list);
2835 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list);
2836
2837 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP,
2838 qed_iwarp_async_event);
2839 qed_ooo_setup(p_hwfn);
2840
2841 return qed_iwarp_ll2_start(p_hwfn, params, rcv_wnd_size);
2842 }
2843
2844 int qed_iwarp_stop(struct qed_hwfn *p_hwfn)
2845 {
2846 int rc;
2847
2848 qed_iwarp_free_prealloc_ep(p_hwfn);
2849 rc = qed_iwarp_wait_for_all_cids(p_hwfn);
2850 if (rc)
2851 return rc;
2852
2853 return qed_iwarp_ll2_stop(p_hwfn);
2854 }
2855
2856 static void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn,
2857 struct qed_iwarp_ep *ep,
2858 u8 fw_return_code)
2859 {
2860 struct qed_iwarp_cm_event_params params;
2861
2862 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_ERROR, true);
2863
2864 params.event = QED_IWARP_EVENT_CLOSE;
2865 params.ep_context = ep;
2866 params.cm_info = &ep->cm_info;
2867 params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ?
2868 0 : -ECONNRESET;
2869
2870 /* paired with READ_ONCE in destroy_qp */
2871 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
2872
2873 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2874 list_del(&ep->list_entry);
2875 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2876
2877 ep->event_cb(ep->cb_context, &params);
2878 }
2879
2880 static void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn,
2881 struct qed_iwarp_ep *ep,
2882 int fw_ret_code)
2883 {
2884 struct qed_iwarp_cm_event_params params;
2885 bool event_cb = false;
2886
2887 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n",
2888 ep->cid, fw_ret_code);
2889
2890 switch (fw_ret_code) {
2891 case IWARP_EXCEPTION_DETECTED_LLP_CLOSED:
2892 params.status = 0;
2893 params.event = QED_IWARP_EVENT_DISCONNECT;
2894 event_cb = true;
2895 break;
2896 case IWARP_EXCEPTION_DETECTED_LLP_RESET:
2897 params.status = -ECONNRESET;
2898 params.event = QED_IWARP_EVENT_DISCONNECT;
2899 event_cb = true;
2900 break;
2901 case IWARP_EXCEPTION_DETECTED_RQ_EMPTY:
2902 params.event = QED_IWARP_EVENT_RQ_EMPTY;
2903 event_cb = true;
2904 break;
2905 case IWARP_EXCEPTION_DETECTED_IRQ_FULL:
2906 params.event = QED_IWARP_EVENT_IRQ_FULL;
2907 event_cb = true;
2908 break;
2909 case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT:
2910 params.event = QED_IWARP_EVENT_LLP_TIMEOUT;
2911 event_cb = true;
2912 break;
2913 case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR:
2914 params.event = QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR;
2915 event_cb = true;
2916 break;
2917 case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW:
2918 params.event = QED_IWARP_EVENT_CQ_OVERFLOW;
2919 event_cb = true;
2920 break;
2921 case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC:
2922 params.event = QED_IWARP_EVENT_QP_CATASTROPHIC;
2923 event_cb = true;
2924 break;
2925 case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR:
2926 params.event = QED_IWARP_EVENT_LOCAL_ACCESS_ERROR;
2927 event_cb = true;
2928 break;
2929 case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR:
2930 params.event = QED_IWARP_EVENT_REMOTE_OPERATION_ERROR;
2931 event_cb = true;
2932 break;
2933 case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED:
2934 params.event = QED_IWARP_EVENT_TERMINATE_RECEIVED;
2935 event_cb = true;
2936 break;
2937 default:
2938 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2939 "Unhandled exception received...fw_ret_code=%d\n",
2940 fw_ret_code);
2941 break;
2942 }
2943
2944 if (event_cb) {
2945 params.ep_context = ep;
2946 params.cm_info = &ep->cm_info;
2947 ep->event_cb(ep->cb_context, &params);
2948 }
2949 }
2950
2951 static void
2952 qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn,
2953 struct qed_iwarp_ep *ep, u8 fw_return_code)
2954 {
2955 struct qed_iwarp_cm_event_params params;
2956
2957 memset(&params, 0, sizeof(params));
2958 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
2959 params.ep_context = ep;
2960 params.cm_info = &ep->cm_info;
2961 /* paired with READ_ONCE in destroy_qp */
2962 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
2963
2964 switch (fw_return_code) {
2965 case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET:
2966 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2967 "%s(0x%x) TCP connect got invalid packet\n",
2968 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2969 params.status = -ECONNRESET;
2970 break;
2971 case IWARP_CONN_ERROR_TCP_CONNECTION_RST:
2972 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2973 "%s(0x%x) TCP Connection Reset\n",
2974 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2975 params.status = -ECONNRESET;
2976 break;
2977 case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT:
2978 DP_NOTICE(p_hwfn, "%s(0x%x) TCP timeout\n",
2979 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2980 params.status = -EBUSY;
2981 break;
2982 case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER:
2983 DP_NOTICE(p_hwfn, "%s(0x%x) MPA not supported VER\n",
2984 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2985 params.status = -ECONNREFUSED;
2986 break;
2987 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
2988 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
2989 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2990 params.status = -ECONNRESET;
2991 break;
2992 default:
2993 DP_ERR(p_hwfn,
2994 "%s(0x%x) Unexpected return code tcp connect: %d\n",
2995 QED_IWARP_CONNECT_MODE_STRING(ep),
2996 ep->tcp_cid, fw_return_code);
2997 params.status = -ECONNRESET;
2998 break;
2999 }
3000
3001 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
3002 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
3003 qed_iwarp_return_ep(p_hwfn, ep);
3004 } else {
3005 ep->event_cb(ep->cb_context, &params);
3006 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3007 list_del(&ep->list_entry);
3008 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3009 }
3010 }
3011
3012 static void
3013 qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn,
3014 struct qed_iwarp_ep *ep, u8 fw_return_code)
3015 {
3016 u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
3017
3018 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
3019 /* Done with the SYN packet, post back to ll2 rx */
3020 qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle);
3021
3022 ep->syn = NULL;
3023
3024 /* If connect failed - upper layer doesn't know about it */
3025 if (fw_return_code == RDMA_RETURN_OK)
3026 qed_iwarp_mpa_received(p_hwfn, ep);
3027 else
3028 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
3029 fw_return_code);
3030 } else {
3031 if (fw_return_code == RDMA_RETURN_OK)
3032 qed_iwarp_mpa_offload(p_hwfn, ep);
3033 else
3034 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
3035 fw_return_code);
3036 }
3037 }
3038
3039 static inline bool
3040 qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
3041 {
3042 if (!ep || (ep->sig != QED_EP_SIG)) {
3043 DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep);
3044 return false;
3045 }
3046
3047 return true;
3048 }
3049
3050 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
3051 __le16 echo, union event_ring_data *data,
3052 u8 fw_return_code)
3053 {
3054 struct qed_rdma_events events = p_hwfn->p_rdma_info->events;
3055 struct regpair *fw_handle = &data->rdma_data.async_handle;
3056 struct qed_iwarp_ep *ep = NULL;
3057 u16 srq_offset;
3058 u16 srq_id;
3059 u16 cid;
3060
3061 ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi,
3062 fw_handle->lo);
3063
3064 switch (fw_event_code) {
3065 case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE:
3066 /* Async completion after TCP 3-way handshake */
3067 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3068 return -EINVAL;
3069 DP_VERBOSE(p_hwfn,
3070 QED_MSG_RDMA,
3071 "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n",
3072 ep->tcp_cid, fw_return_code);
3073 qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code);
3074 break;
3075 case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED:
3076 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3077 return -EINVAL;
3078 DP_VERBOSE(p_hwfn,
3079 QED_MSG_RDMA,
3080 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n",
3081 ep->cid, fw_return_code);
3082 qed_iwarp_exception_received(p_hwfn, ep, fw_return_code);
3083 break;
3084 case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE:
3085 /* Async completion for Close Connection ramrod */
3086 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3087 return -EINVAL;
3088 DP_VERBOSE(p_hwfn,
3089 QED_MSG_RDMA,
3090 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n",
3091 ep->cid, fw_return_code);
3092 qed_iwarp_qp_in_error(p_hwfn, ep, fw_return_code);
3093 break;
3094 case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED:
3095 /* Async event for active side only */
3096 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3097 return -EINVAL;
3098 DP_VERBOSE(p_hwfn,
3099 QED_MSG_RDMA,
3100 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n",
3101 ep->cid, fw_return_code);
3102 qed_iwarp_mpa_reply_arrived(p_hwfn, ep);
3103 break;
3104 case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE:
3105 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3106 return -EINVAL;
3107 DP_VERBOSE(p_hwfn,
3108 QED_MSG_RDMA,
3109 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n",
3110 ep->cid, fw_return_code);
3111 qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code);
3112 break;
3113 case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED:
3114 cid = (u16)le32_to_cpu(fw_handle->lo);
3115 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
3116 "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid);
3117 qed_iwarp_cid_cleaned(p_hwfn, cid);
3118
3119 break;
3120 case IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY:
3121 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY\n");
3122 srq_offset = p_hwfn->p_rdma_info->srq_id_offset;
3123 /* FW assigns value that is no greater than u16 */
3124 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset;
3125 events.affiliated_event(events.context,
3126 QED_IWARP_EVENT_SRQ_EMPTY,
3127 &srq_id);
3128 break;
3129 case IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT:
3130 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT\n");
3131 srq_offset = p_hwfn->p_rdma_info->srq_id_offset;
3132 /* FW assigns value that is no greater than u16 */
3133 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset;
3134 events.affiliated_event(events.context,
3135 QED_IWARP_EVENT_SRQ_LIMIT,
3136 &srq_id);
3137 break;
3138 case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW:
3139 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n");
3140
3141 p_hwfn->p_rdma_info->events.affiliated_event(
3142 p_hwfn->p_rdma_info->events.context,
3143 QED_IWARP_EVENT_CQ_OVERFLOW,
3144 (void *)fw_handle);
3145 break;
3146 default:
3147 DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n",
3148 fw_event_code);
3149 return -EINVAL;
3150 }
3151 return 0;
3152 }
3153
3154 int
3155 qed_iwarp_create_listen(void *rdma_cxt,
3156 struct qed_iwarp_listen_in *iparams,
3157 struct qed_iwarp_listen_out *oparams)
3158 {
3159 struct qed_hwfn *p_hwfn = rdma_cxt;
3160 struct qed_iwarp_listener *listener;
3161
3162 listener = kzalloc(sizeof(*listener), GFP_KERNEL);
3163 if (!listener)
3164 return -ENOMEM;
3165
3166 listener->ip_version = iparams->ip_version;
3167 memcpy(listener->ip_addr, iparams->ip_addr, sizeof(listener->ip_addr));
3168 listener->port = iparams->port;
3169 listener->vlan = iparams->vlan;
3170
3171 listener->event_cb = iparams->event_cb;
3172 listener->cb_context = iparams->cb_context;
3173 listener->max_backlog = iparams->max_backlog;
3174 oparams->handle = listener;
3175
3176 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3177 list_add_tail(&listener->list_entry,
3178 &p_hwfn->p_rdma_info->iwarp.listen_list);
3179 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3180
3181 DP_VERBOSE(p_hwfn,
3182 QED_MSG_RDMA,
3183 "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n",
3184 listener->event_cb,
3185 listener,
3186 listener->ip_addr[0],
3187 listener->ip_addr[1],
3188 listener->ip_addr[2],
3189 listener->ip_addr[3], listener->port, listener->vlan);
3190
3191 return 0;
3192 }
3193
3194 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle)
3195 {
3196 struct qed_iwarp_listener *listener = handle;
3197 struct qed_hwfn *p_hwfn = rdma_cxt;
3198
3199 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "handle=%p\n", handle);
3200
3201 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3202 list_del(&listener->list_entry);
3203 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3204
3205 kfree(listener);
3206
3207 return 0;
3208 }
3209
3210 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams)
3211 {
3212 struct qed_hwfn *p_hwfn = rdma_cxt;
3213 struct qed_sp_init_data init_data;
3214 struct qed_spq_entry *p_ent;
3215 struct qed_iwarp_ep *ep;
3216 struct qed_rdma_qp *qp;
3217 int rc;
3218
3219 ep = iparams->ep_context;
3220 if (!ep) {
3221 DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n");
3222 return -EINVAL;
3223 }
3224
3225 qp = ep->qp;
3226
3227 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
3228 qp->icid, ep->tcp_cid);
3229
3230 memset(&init_data, 0, sizeof(init_data));
3231 init_data.cid = qp->icid;
3232 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
3233 init_data.comp_mode = QED_SPQ_MODE_CB;
3234
3235 rc = qed_sp_init_request(p_hwfn, &p_ent,
3236 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR,
3237 PROTOCOLID_IWARP, &init_data);
3238
3239 if (rc)
3240 return rc;
3241
3242 rc = qed_spq_post(p_hwfn, p_ent, NULL);
3243
3244 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc);
3245
3246 return rc;
3247 }
3248
3249 void
3250 qed_iwarp_query_qp(struct qed_rdma_qp *qp,
3251 struct qed_rdma_query_qp_out_params *out_params)
3252 {
3253 out_params->state = qed_iwarp2roce_state(qp->iwarp_state);
3254 }
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