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1/* QLogic qed NIC Driver
2 * Copyright (c) 2015-2017 QLogic Corporation
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and /or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32#include <linux/if_ether.h>
33#include <linux/if_vlan.h>
34#include <linux/ip.h>
35#include <linux/ipv6.h>
36#include <linux/spinlock.h>
37#include <linux/tcp.h>
38#include "qed_cxt.h"
39#include "qed_hw.h"
40#include "qed_ll2.h"
41#include "qed_rdma.h"
42#include "qed_reg_addr.h"
43#include "qed_sp.h"
44#include "qed_ooo.h"
45
46#define QED_IWARP_ORD_DEFAULT 32
47#define QED_IWARP_IRD_DEFAULT 32
48#define QED_IWARP_MAX_FW_MSS 4120
49
50#define QED_EP_SIG 0xecabcdef
51
52struct mpa_v2_hdr {
53 __be16 ird;
54 __be16 ord;
55};
56
57#define MPA_V2_PEER2PEER_MODEL 0x8000
58#define MPA_V2_SEND_RTR 0x4000 /* on ird */
59#define MPA_V2_READ_RTR 0x4000 /* on ord */
60#define MPA_V2_WRITE_RTR 0x8000
61#define MPA_V2_IRD_ORD_MASK 0x3FFF
62
63#define MPA_REV2(_mpa_rev) ((_mpa_rev) == MPA_NEGOTIATION_TYPE_ENHANCED)
64
65#define QED_IWARP_INVALID_TCP_CID 0xffffffff
66#define QED_IWARP_RCV_WND_SIZE_DEF (256 * 1024)
67#define QED_IWARP_RCV_WND_SIZE_MIN (0xffff)
68#define TIMESTAMP_HEADER_SIZE (12)
69#define QED_IWARP_MAX_FIN_RT_DEFAULT (2)
70
71#define QED_IWARP_TS_EN BIT(0)
72#define QED_IWARP_DA_EN BIT(1)
73#define QED_IWARP_PARAM_CRC_NEEDED (1)
74#define QED_IWARP_PARAM_P2P (1)
75
76#define QED_IWARP_DEF_MAX_RT_TIME (0)
77#define QED_IWARP_DEF_CWND_FACTOR (4)
78#define QED_IWARP_DEF_KA_MAX_PROBE_CNT (5)
79#define QED_IWARP_DEF_KA_TIMEOUT (1200000) /* 20 min */
80#define QED_IWARP_DEF_KA_INTERVAL (1000) /* 1 sec */
81
82static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
83 u8 fw_event_code, u16 echo,
84 union event_ring_data *data,
85 u8 fw_return_code);
86
87/* Override devinfo with iWARP specific values */
88void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn)
89{
90 struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;
91
92 dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE;
93 dev->max_qp = min_t(u32,
94 IWARP_MAX_QPS,
95 p_hwfn->p_rdma_info->num_qps) -
96 QED_IWARP_PREALLOC_CNT;
97
98 dev->max_cq = dev->max_qp;
99
100 dev->max_qp_resp_rd_atomic_resc = QED_IWARP_IRD_DEFAULT;
101 dev->max_qp_req_rd_atomic_resc = QED_IWARP_ORD_DEFAULT;
102}
103
104void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
105{
106 p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP;
107 qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1);
108 p_hwfn->b_rdma_enabled_in_prs = true;
109}
110
111/* We have two cid maps, one for tcp which should be used only from passive
112 * syn processing and replacing a pre-allocated ep in the list. The second
113 * for active tcp and for QPs.
114 */
115static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid)
116{
117 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
118
119 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
120
121 if (cid < QED_IWARP_PREALLOC_CNT)
122 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
123 cid);
124 else
125 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
126
127 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
128}
129
130void
131qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
132 struct iwarp_init_func_ramrod_data *p_ramrod)
133{
134 p_ramrod->iwarp.ll2_ooo_q_index =
135 RESC_START(p_hwfn, QED_LL2_QUEUE) +
136 p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle;
137
138 p_ramrod->tcp.max_fin_rt = QED_IWARP_MAX_FIN_RT_DEFAULT;
139
140 return;
141}
142
143static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid)
144{
145 int rc;
146
147 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
148 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
149 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
150 if (rc) {
151 DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n");
152 return rc;
153 }
154 *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
155
156 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid);
157 if (rc)
158 qed_iwarp_cid_cleaned(p_hwfn, *cid);
159
160 return rc;
161}
162
163static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid)
164{
165 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
166
167 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
168 qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid);
169 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
170}
171
172/* This function allocates a cid for passive tcp (called from syn receive)
173 * the reason it's separate from the regular cid allocation is because it
174 * is assured that these cids already have ilt allocated. They are preallocated
175 * to ensure that we won't need to allocate memory during syn processing
176 */
177static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid)
178{
179 int rc;
180
181 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
182
183 rc = qed_rdma_bmap_alloc_id(p_hwfn,
184 &p_hwfn->p_rdma_info->tcp_cid_map, cid);
185
186 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
187
188 if (rc) {
189 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
190 "can't allocate iwarp tcp cid max-count=%d\n",
191 p_hwfn->p_rdma_info->tcp_cid_map.max_count);
192
193 *cid = QED_IWARP_INVALID_TCP_CID;
194 return rc;
195 }
196
197 *cid += qed_cxt_get_proto_cid_start(p_hwfn,
198 p_hwfn->p_rdma_info->proto);
199 return 0;
200}
201
202int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
203 struct qed_rdma_qp *qp,
204 struct qed_rdma_create_qp_out_params *out_params)
205{
206 struct iwarp_create_qp_ramrod_data *p_ramrod;
207 struct qed_sp_init_data init_data;
208 struct qed_spq_entry *p_ent;
209 u16 physical_queue;
210 u32 cid;
211 int rc;
212
213 qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
214 IWARP_SHARED_QUEUE_PAGE_SIZE,
215 &qp->shared_queue_phys_addr,
216 GFP_KERNEL);
217 if (!qp->shared_queue)
218 return -ENOMEM;
219
220 out_params->sq_pbl_virt = (u8 *)qp->shared_queue +
221 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
222 out_params->sq_pbl_phys = qp->shared_queue_phys_addr +
223 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
224 out_params->rq_pbl_virt = (u8 *)qp->shared_queue +
225 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
226 out_params->rq_pbl_phys = qp->shared_queue_phys_addr +
227 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
228
229 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
230 if (rc)
231 goto err1;
232
233 qp->icid = (u16)cid;
234
235 memset(&init_data, 0, sizeof(init_data));
236 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
237 init_data.cid = qp->icid;
238 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
239
240 rc = qed_sp_init_request(p_hwfn, &p_ent,
241 IWARP_RAMROD_CMD_ID_CREATE_QP,
242 PROTOCOLID_IWARP, &init_data);
243 if (rc)
244 goto err2;
245
246 p_ramrod = &p_ent->ramrod.iwarp_create_qp;
247
248 SET_FIELD(p_ramrod->flags,
249 IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN,
250 qp->fmr_and_reserved_lkey);
251
252 SET_FIELD(p_ramrod->flags,
253 IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all);
254
255 SET_FIELD(p_ramrod->flags,
256 IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN,
257 qp->incoming_rdma_read_en);
258
259 SET_FIELD(p_ramrod->flags,
260 IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN,
261 qp->incoming_rdma_write_en);
262
263 SET_FIELD(p_ramrod->flags,
264 IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN,
265 qp->incoming_atomic_en);
266
267 SET_FIELD(p_ramrod->flags,
268 IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq);
269
270 p_ramrod->pd = qp->pd;
271 p_ramrod->sq_num_pages = qp->sq_num_pages;
272 p_ramrod->rq_num_pages = qp->rq_num_pages;
273
274 p_ramrod->qp_handle_for_cqe.hi = cpu_to_le32(qp->qp_handle.hi);
275 p_ramrod->qp_handle_for_cqe.lo = cpu_to_le32(qp->qp_handle.lo);
276
277 p_ramrod->cq_cid_for_sq =
278 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id);
279 p_ramrod->cq_cid_for_rq =
280 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id);
281
282 p_ramrod->dpi = cpu_to_le16(qp->dpi);
283
284 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
285 p_ramrod->physical_q0 = cpu_to_le16(physical_queue);
286 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
287 p_ramrod->physical_q1 = cpu_to_le16(physical_queue);
288
289 rc = qed_spq_post(p_hwfn, p_ent, NULL);
290 if (rc)
291 goto err2;
292
293 return rc;
294
295err2:
296 qed_iwarp_cid_cleaned(p_hwfn, cid);
297err1:
298 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
299 IWARP_SHARED_QUEUE_PAGE_SIZE,
300 qp->shared_queue, qp->shared_queue_phys_addr);
301
302 return rc;
303}
304
305static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
306{
307 struct iwarp_modify_qp_ramrod_data *p_ramrod;
308 struct qed_sp_init_data init_data;
309 struct qed_spq_entry *p_ent;
310 int rc;
311
312 /* Get SPQ entry */
313 memset(&init_data, 0, sizeof(init_data));
314 init_data.cid = qp->icid;
315 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
316 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
317
318 rc = qed_sp_init_request(p_hwfn, &p_ent,
319 IWARP_RAMROD_CMD_ID_MODIFY_QP,
320 p_hwfn->p_rdma_info->proto, &init_data);
321 if (rc)
322 return rc;
323
324 p_ramrod = &p_ent->ramrod.iwarp_modify_qp;
325 SET_FIELD(p_ramrod->flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN,
326 0x1);
327 if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING)
328 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_CLOSING;
329 else
330 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_ERROR;
331
332 rc = qed_spq_post(p_hwfn, p_ent, NULL);
333
334 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc);
335
336 return rc;
337}
338
339enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state)
340{
341 switch (state) {
342 case QED_ROCE_QP_STATE_RESET:
343 case QED_ROCE_QP_STATE_INIT:
344 case QED_ROCE_QP_STATE_RTR:
345 return QED_IWARP_QP_STATE_IDLE;
346 case QED_ROCE_QP_STATE_RTS:
347 return QED_IWARP_QP_STATE_RTS;
348 case QED_ROCE_QP_STATE_SQD:
349 return QED_IWARP_QP_STATE_CLOSING;
350 case QED_ROCE_QP_STATE_ERR:
351 return QED_IWARP_QP_STATE_ERROR;
352 case QED_ROCE_QP_STATE_SQE:
353 return QED_IWARP_QP_STATE_TERMINATE;
354 default:
355 return QED_IWARP_QP_STATE_ERROR;
356 }
357}
358
359static enum qed_roce_qp_state
360qed_iwarp2roce_state(enum qed_iwarp_qp_state state)
361{
362 switch (state) {
363 case QED_IWARP_QP_STATE_IDLE:
364 return QED_ROCE_QP_STATE_INIT;
365 case QED_IWARP_QP_STATE_RTS:
366 return QED_ROCE_QP_STATE_RTS;
367 case QED_IWARP_QP_STATE_TERMINATE:
368 return QED_ROCE_QP_STATE_SQE;
369 case QED_IWARP_QP_STATE_CLOSING:
370 return QED_ROCE_QP_STATE_SQD;
371 case QED_IWARP_QP_STATE_ERROR:
372 return QED_ROCE_QP_STATE_ERR;
373 default:
374 return QED_ROCE_QP_STATE_ERR;
375 }
376}
377
378const char *iwarp_state_names[] = {
379 "IDLE",
380 "RTS",
381 "TERMINATE",
382 "CLOSING",
383 "ERROR",
384};
385
386int
387qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn,
388 struct qed_rdma_qp *qp,
389 enum qed_iwarp_qp_state new_state, bool internal)
390{
391 enum qed_iwarp_qp_state prev_iw_state;
392 bool modify_fw = false;
393 int rc = 0;
394
395 /* modify QP can be called from upper-layer or as a result of async
396 * RST/FIN... therefore need to protect
397 */
398 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
399 prev_iw_state = qp->iwarp_state;
400
401 if (prev_iw_state == new_state) {
402 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
403 return 0;
404 }
405
406 switch (prev_iw_state) {
407 case QED_IWARP_QP_STATE_IDLE:
408 switch (new_state) {
409 case QED_IWARP_QP_STATE_RTS:
410 qp->iwarp_state = QED_IWARP_QP_STATE_RTS;
411 break;
412 case QED_IWARP_QP_STATE_ERROR:
413 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
414 if (!internal)
415 modify_fw = true;
416 break;
417 default:
418 break;
419 }
420 break;
421 case QED_IWARP_QP_STATE_RTS:
422 switch (new_state) {
423 case QED_IWARP_QP_STATE_CLOSING:
424 if (!internal)
425 modify_fw = true;
426
427 qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING;
428 break;
429 case QED_IWARP_QP_STATE_ERROR:
430 if (!internal)
431 modify_fw = true;
432 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
433 break;
434 default:
435 break;
436 }
437 break;
438 case QED_IWARP_QP_STATE_ERROR:
439 switch (new_state) {
440 case QED_IWARP_QP_STATE_IDLE:
441
442 qp->iwarp_state = new_state;
443 break;
444 case QED_IWARP_QP_STATE_CLOSING:
445 /* could happen due to race... do nothing.... */
446 break;
447 default:
448 rc = -EINVAL;
449 }
450 break;
451 case QED_IWARP_QP_STATE_TERMINATE:
452 case QED_IWARP_QP_STATE_CLOSING:
453 qp->iwarp_state = new_state;
454 break;
455 default:
456 break;
457 }
458
459 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n",
460 qp->icid,
461 iwarp_state_names[prev_iw_state],
462 iwarp_state_names[qp->iwarp_state],
463 internal ? "internal" : "");
464
465 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
466
467 if (modify_fw)
468 rc = qed_iwarp_modify_fw(p_hwfn, qp);
469
470 return rc;
471}
472
473int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
474{
475 struct qed_sp_init_data init_data;
476 struct qed_spq_entry *p_ent;
477 int rc;
478
479 /* Get SPQ entry */
480 memset(&init_data, 0, sizeof(init_data));
481 init_data.cid = qp->icid;
482 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
483 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
484
485 rc = qed_sp_init_request(p_hwfn, &p_ent,
486 IWARP_RAMROD_CMD_ID_DESTROY_QP,
487 p_hwfn->p_rdma_info->proto, &init_data);
488 if (rc)
489 return rc;
490
491 rc = qed_spq_post(p_hwfn, p_ent, NULL);
492
493 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc);
494
495 return rc;
496}
497
498static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn,
499 struct qed_iwarp_ep *ep,
500 bool remove_from_active_list)
501{
502 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
503 sizeof(*ep->ep_buffer_virt),
504 ep->ep_buffer_virt, ep->ep_buffer_phys);
505
506 if (remove_from_active_list) {
507 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
508 list_del(&ep->list_entry);
509 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
510 }
511
512 if (ep->qp)
513 ep->qp->ep = NULL;
514
515 kfree(ep);
516}
517
518int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
519{
520 struct qed_iwarp_ep *ep = qp->ep;
521 int wait_count = 0;
522 int rc = 0;
523
524 if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) {
525 rc = qed_iwarp_modify_qp(p_hwfn, qp,
526 QED_IWARP_QP_STATE_ERROR, false);
527 if (rc)
528 return rc;
529 }
530
531 /* Make sure ep is closed before returning and freeing memory. */
532 if (ep) {
533 while (ep->state != QED_IWARP_EP_CLOSED && wait_count++ < 200)
534 msleep(100);
535
536 if (ep->state != QED_IWARP_EP_CLOSED)
537 DP_NOTICE(p_hwfn, "ep state close timeout state=%x\n",
538 ep->state);
539
540 qed_iwarp_destroy_ep(p_hwfn, ep, false);
541 }
542
543 rc = qed_iwarp_fw_destroy(p_hwfn, qp);
544
545 if (qp->shared_queue)
546 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
547 IWARP_SHARED_QUEUE_PAGE_SIZE,
548 qp->shared_queue, qp->shared_queue_phys_addr);
549
550 return rc;
551}
552
553static int
554qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out)
555{
556 struct qed_iwarp_ep *ep;
557 int rc;
558
559 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
560 if (!ep)
561 return -ENOMEM;
562
563 ep->state = QED_IWARP_EP_INIT;
564
565 ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
566 sizeof(*ep->ep_buffer_virt),
567 &ep->ep_buffer_phys,
568 GFP_KERNEL);
569 if (!ep->ep_buffer_virt) {
570 rc = -ENOMEM;
571 goto err;
572 }
573
574 ep->sig = QED_EP_SIG;
575
576 *ep_out = ep;
577
578 return 0;
579
580err:
581 kfree(ep);
582 return rc;
583}
584
585static void
586qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn,
587 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod)
588{
589 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n",
590 p_tcp_ramrod->tcp.local_mac_addr_lo,
591 p_tcp_ramrod->tcp.local_mac_addr_mid,
592 p_tcp_ramrod->tcp.local_mac_addr_hi,
593 p_tcp_ramrod->tcp.remote_mac_addr_lo,
594 p_tcp_ramrod->tcp.remote_mac_addr_mid,
595 p_tcp_ramrod->tcp.remote_mac_addr_hi);
596
597 if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) {
598 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
599 "local_ip=%pI4h:%x, remote_ip=%pI4h:%x, vlan=%x\n",
600 p_tcp_ramrod->tcp.local_ip,
601 p_tcp_ramrod->tcp.local_port,
602 p_tcp_ramrod->tcp.remote_ip,
603 p_tcp_ramrod->tcp.remote_port,
604 p_tcp_ramrod->tcp.vlan_id);
605 } else {
606 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
607 "local_ip=%pI6:%x, remote_ip=%pI6:%x, vlan=%x\n",
608 p_tcp_ramrod->tcp.local_ip,
609 p_tcp_ramrod->tcp.local_port,
610 p_tcp_ramrod->tcp.remote_ip,
611 p_tcp_ramrod->tcp.remote_port,
612 p_tcp_ramrod->tcp.vlan_id);
613 }
614
615 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
616 "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n",
617 p_tcp_ramrod->tcp.flow_label,
618 p_tcp_ramrod->tcp.ttl,
619 p_tcp_ramrod->tcp.tos_or_tc,
620 p_tcp_ramrod->tcp.mss,
621 p_tcp_ramrod->tcp.rcv_wnd_scale,
622 p_tcp_ramrod->tcp.connect_mode,
623 p_tcp_ramrod->tcp.flags);
624
625 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n",
626 p_tcp_ramrod->tcp.syn_ip_payload_length,
627 p_tcp_ramrod->tcp.syn_phy_addr_lo,
628 p_tcp_ramrod->tcp.syn_phy_addr_hi);
629}
630
631static int
632qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
633{
634 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
635 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod;
636 struct tcp_offload_params_opt2 *tcp;
637 struct qed_sp_init_data init_data;
638 struct qed_spq_entry *p_ent;
639 dma_addr_t async_output_phys;
640 dma_addr_t in_pdata_phys;
641 u16 physical_q;
642 u8 tcp_flags;
643 int rc;
644 int i;
645
646 memset(&init_data, 0, sizeof(init_data));
647 init_data.cid = ep->tcp_cid;
648 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
649 if (ep->connect_mode == TCP_CONNECT_PASSIVE)
650 init_data.comp_mode = QED_SPQ_MODE_CB;
651 else
652 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
653
654 rc = qed_sp_init_request(p_hwfn, &p_ent,
655 IWARP_RAMROD_CMD_ID_TCP_OFFLOAD,
656 PROTOCOLID_IWARP, &init_data);
657 if (rc)
658 return rc;
659
660 p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload;
661
662 in_pdata_phys = ep->ep_buffer_phys +
663 offsetof(struct qed_iwarp_ep_memory, in_pdata);
664 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr,
665 in_pdata_phys);
666
667 p_tcp_ramrod->iwarp.incoming_ulp_buffer.len =
668 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
669
670 async_output_phys = ep->ep_buffer_phys +
671 offsetof(struct qed_iwarp_ep_memory, async_output);
672 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf,
673 async_output_phys);
674
675 p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
676 p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
677
678 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
679 p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q);
680 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
681 p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q);
682 p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev;
683
684 tcp = &p_tcp_ramrod->tcp;
685 qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi,
686 &tcp->remote_mac_addr_mid,
687 &tcp->remote_mac_addr_lo, ep->remote_mac_addr);
688 qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid,
689 &tcp->local_mac_addr_lo, ep->local_mac_addr);
690
691 tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan);
692
693 tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags;
694 tcp->flags = 0;
695 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN,
696 !!(tcp_flags & QED_IWARP_TS_EN));
697
698 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN,
699 !!(tcp_flags & QED_IWARP_DA_EN));
700
701 tcp->ip_version = ep->cm_info.ip_version;
702
703 for (i = 0; i < 4; i++) {
704 tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]);
705 tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]);
706 }
707
708 tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port);
709 tcp->local_port = cpu_to_le16(ep->cm_info.local_port);
710 tcp->mss = cpu_to_le16(ep->mss);
711 tcp->flow_label = 0;
712 tcp->ttl = 0x40;
713 tcp->tos_or_tc = 0;
714
715 tcp->max_rt_time = QED_IWARP_DEF_MAX_RT_TIME;
716 tcp->cwnd = QED_IWARP_DEF_CWND_FACTOR * tcp->mss;
717 tcp->ka_max_probe_cnt = QED_IWARP_DEF_KA_MAX_PROBE_CNT;
718 tcp->ka_timeout = QED_IWARP_DEF_KA_TIMEOUT;
719 tcp->ka_interval = QED_IWARP_DEF_KA_INTERVAL;
720
721 tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale;
722 tcp->connect_mode = ep->connect_mode;
723
724 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
725 tcp->syn_ip_payload_length =
726 cpu_to_le16(ep->syn_ip_payload_length);
727 tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr);
728 tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr);
729 }
730
731 qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod);
732
733 rc = qed_spq_post(p_hwfn, p_ent, NULL);
734
735 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
736 "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc);
737
738 return rc;
739}
740
741static void
742qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
743{
744 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
745 struct qed_iwarp_cm_event_params params;
746 struct mpa_v2_hdr *mpa_v2;
747 union async_output *async_data;
748 u16 mpa_ord, mpa_ird;
749 u8 mpa_hdr_size = 0;
750 u8 mpa_rev;
751
752 async_data = &ep->ep_buffer_virt->async_output;
753
754 mpa_rev = async_data->mpa_request.mpa_handshake_mode;
755 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
756 "private_data_len=%x handshake_mode=%x private_data=(%x)\n",
757 async_data->mpa_request.ulp_data_len,
758 mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata)));
759
760 if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
761 /* Read ord/ird values from private data buffer */
762 mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata;
763 mpa_hdr_size = sizeof(*mpa_v2);
764
765 mpa_ord = ntohs(mpa_v2->ord);
766 mpa_ird = ntohs(mpa_v2->ird);
767
768 /* Temprary store in cm_info incoming ord/ird requested, later
769 * replace with negotiated value during accept
770 */
771 ep->cm_info.ord = (u8)min_t(u16,
772 (mpa_ord & MPA_V2_IRD_ORD_MASK),
773 QED_IWARP_ORD_DEFAULT);
774
775 ep->cm_info.ird = (u8)min_t(u16,
776 (mpa_ird & MPA_V2_IRD_ORD_MASK),
777 QED_IWARP_IRD_DEFAULT);
778
779 /* Peer2Peer negotiation */
780 ep->rtr_type = MPA_RTR_TYPE_NONE;
781 if (mpa_ird & MPA_V2_PEER2PEER_MODEL) {
782 if (mpa_ord & MPA_V2_WRITE_RTR)
783 ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE;
784
785 if (mpa_ord & MPA_V2_READ_RTR)
786 ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ;
787
788 if (mpa_ird & MPA_V2_SEND_RTR)
789 ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND;
790
791 ep->rtr_type &= iwarp_info->rtr_type;
792
793 /* if we're left with no match send our capabilities */
794 if (ep->rtr_type == MPA_RTR_TYPE_NONE)
795 ep->rtr_type = iwarp_info->rtr_type;
796 }
797
798 ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
799 } else {
800 ep->cm_info.ord = QED_IWARP_ORD_DEFAULT;
801 ep->cm_info.ird = QED_IWARP_IRD_DEFAULT;
802 ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC;
803 }
804
805 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
806 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n",
807 mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type,
808 async_data->mpa_request.ulp_data_len, mpa_hdr_size);
809
810 /* Strip mpa v2 hdr from private data before sending to upper layer */
811 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size;
812
813 ep->cm_info.private_data_len = async_data->mpa_request.ulp_data_len -
814 mpa_hdr_size;
815
816 params.event = QED_IWARP_EVENT_MPA_REQUEST;
817 params.cm_info = &ep->cm_info;
818 params.ep_context = ep;
819 params.status = 0;
820
821 ep->state = QED_IWARP_EP_MPA_REQ_RCVD;
822 ep->event_cb(ep->cb_context, ¶ms);
823}
824
825static int
826qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
827{
828 struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod;
829 struct qed_iwarp_info *iwarp_info;
830 struct qed_sp_init_data init_data;
831 dma_addr_t async_output_phys;
832 struct qed_spq_entry *p_ent;
833 dma_addr_t out_pdata_phys;
834 dma_addr_t in_pdata_phys;
835 struct qed_rdma_qp *qp;
836 bool reject;
837 int rc;
838
839 if (!ep)
840 return -EINVAL;
841
842 qp = ep->qp;
843 reject = !qp;
844
845 memset(&init_data, 0, sizeof(init_data));
846 init_data.cid = reject ? ep->tcp_cid : qp->icid;
847 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
848
849 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
850 init_data.comp_mode = QED_SPQ_MODE_CB;
851 else
852 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
853
854 rc = qed_sp_init_request(p_hwfn, &p_ent,
855 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD,
856 PROTOCOLID_IWARP, &init_data);
857 if (rc)
858 return rc;
859
860 p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload;
861 out_pdata_phys = ep->ep_buffer_phys +
862 offsetof(struct qed_iwarp_ep_memory, out_pdata);
863 DMA_REGPAIR_LE(p_mpa_ramrod->common.outgoing_ulp_buffer.addr,
864 out_pdata_phys);
865 p_mpa_ramrod->common.outgoing_ulp_buffer.len =
866 ep->cm_info.private_data_len;
867 p_mpa_ramrod->common.crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed;
868
869 p_mpa_ramrod->common.out_rq.ord = ep->cm_info.ord;
870 p_mpa_ramrod->common.out_rq.ird = ep->cm_info.ird;
871
872 p_mpa_ramrod->tcp_cid = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid;
873
874 in_pdata_phys = ep->ep_buffer_phys +
875 offsetof(struct qed_iwarp_ep_memory, in_pdata);
876 p_mpa_ramrod->tcp_connect_side = ep->connect_mode;
877 DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr,
878 in_pdata_phys);
879 p_mpa_ramrod->incoming_ulp_buffer.len =
880 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
881 async_output_phys = ep->ep_buffer_phys +
882 offsetof(struct qed_iwarp_ep_memory, async_output);
883 DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf,
884 async_output_phys);
885 p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
886 p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
887
888 if (!reject) {
889 DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr,
890 qp->shared_queue_phys_addr);
891 p_mpa_ramrod->stats_counter_id =
892 RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue;
893 } else {
894 p_mpa_ramrod->common.reject = 1;
895 }
896
897 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
898 p_mpa_ramrod->rcv_wnd = iwarp_info->rcv_wnd_size;
899 p_mpa_ramrod->mode = ep->mpa_rev;
900 SET_FIELD(p_mpa_ramrod->rtr_pref,
901 IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type);
902
903 ep->state = QED_IWARP_EP_MPA_OFFLOADED;
904 rc = qed_spq_post(p_hwfn, p_ent, NULL);
905 if (!reject)
906 ep->cid = qp->icid; /* Now they're migrated. */
907
908 DP_VERBOSE(p_hwfn,
909 QED_MSG_RDMA,
910 "QP(0x%x) EP(0x%x) MPA Offload rc = %d IRD=0x%x ORD=0x%x rtr_type=%d mpa_rev=%d reject=%d\n",
911 reject ? 0xffff : qp->icid,
912 ep->tcp_cid,
913 rc,
914 ep->cm_info.ird,
915 ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject);
916 return rc;
917}
918
919static void
920qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
921{
922 ep->state = QED_IWARP_EP_INIT;
923 if (ep->qp)
924 ep->qp->ep = NULL;
925 ep->qp = NULL;
926 memset(&ep->cm_info, 0, sizeof(ep->cm_info));
927
928 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
929 /* We don't care about the return code, it's ok if tcp_cid
930 * remains invalid...in this case we'll defer allocation
931 */
932 qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
933 }
934 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
935
936 list_del(&ep->list_entry);
937 list_add_tail(&ep->list_entry,
938 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
939
940 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
941}
942
943void
944qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
945{
946 struct mpa_v2_hdr *mpa_v2_params;
947 union async_output *async_data;
948 u16 mpa_ird, mpa_ord;
949 u8 mpa_data_size = 0;
950
951 if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) {
952 mpa_v2_params =
953 (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata);
954 mpa_data_size = sizeof(*mpa_v2_params);
955 mpa_ird = ntohs(mpa_v2_params->ird);
956 mpa_ord = ntohs(mpa_v2_params->ord);
957
958 ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK);
959 ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK);
960 }
961 async_data = &ep->ep_buffer_virt->async_output;
962
963 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size;
964 ep->cm_info.private_data_len = async_data->mpa_response.ulp_data_len -
965 mpa_data_size;
966}
967
968void
969qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
970{
971 struct qed_iwarp_cm_event_params params;
972
973 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
974 DP_NOTICE(p_hwfn,
975 "MPA reply event not expected on passive side!\n");
976 return;
977 }
978
979 params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY;
980
981 qed_iwarp_parse_private_data(p_hwfn, ep);
982
983 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
984 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
985 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
986
987 params.cm_info = &ep->cm_info;
988 params.ep_context = ep;
989 params.status = 0;
990
991 ep->mpa_reply_processed = true;
992
993 ep->event_cb(ep->cb_context, ¶ms);
994}
995
996#define QED_IWARP_CONNECT_MODE_STRING(ep) \
997 ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active"
998
999/* Called as a result of the event:
1000 * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE
1001 */
1002static void
1003qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn,
1004 struct qed_iwarp_ep *ep, u8 fw_return_code)
1005{
1006 struct qed_iwarp_cm_event_params params;
1007
1008 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
1009 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
1010 else
1011 params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE;
1012
1013 if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed)
1014 qed_iwarp_parse_private_data(p_hwfn, ep);
1015
1016 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1017 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
1018 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
1019
1020 params.cm_info = &ep->cm_info;
1021
1022 params.ep_context = ep;
1023
1024 ep->state = QED_IWARP_EP_CLOSED;
1025
1026 switch (fw_return_code) {
1027 case RDMA_RETURN_OK:
1028 ep->qp->max_rd_atomic_req = ep->cm_info.ord;
1029 ep->qp->max_rd_atomic_resp = ep->cm_info.ird;
1030 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1);
1031 ep->state = QED_IWARP_EP_ESTABLISHED;
1032 params.status = 0;
1033 break;
1034 case IWARP_CONN_ERROR_MPA_TIMEOUT:
1035 DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n",
1036 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1037 params.status = -EBUSY;
1038 break;
1039 case IWARP_CONN_ERROR_MPA_ERROR_REJECT:
1040 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n",
1041 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1042 params.status = -ECONNREFUSED;
1043 break;
1044 case IWARP_CONN_ERROR_MPA_RST:
1045 DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n",
1046 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid,
1047 ep->tcp_cid);
1048 params.status = -ECONNRESET;
1049 break;
1050 case IWARP_CONN_ERROR_MPA_FIN:
1051 DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n",
1052 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1053 params.status = -ECONNREFUSED;
1054 break;
1055 case IWARP_CONN_ERROR_MPA_INSUF_IRD:
1056 DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n",
1057 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1058 params.status = -ECONNREFUSED;
1059 break;
1060 case IWARP_CONN_ERROR_MPA_RTR_MISMATCH:
1061 DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n",
1062 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1063 params.status = -ECONNREFUSED;
1064 break;
1065 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
1066 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
1067 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1068 params.status = -ECONNREFUSED;
1069 break;
1070 case IWARP_CONN_ERROR_MPA_LOCAL_ERROR:
1071 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n",
1072 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1073 params.status = -ECONNREFUSED;
1074 break;
1075 case IWARP_CONN_ERROR_MPA_TERMINATE:
1076 DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n",
1077 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1078 params.status = -ECONNREFUSED;
1079 break;
1080 default:
1081 params.status = -ECONNRESET;
1082 break;
1083 }
1084
1085 ep->event_cb(ep->cb_context, ¶ms);
1086
1087 /* on passive side, if there is no associated QP (REJECT) we need to
1088 * return the ep to the pool, (in the regular case we add an element
1089 * in accept instead of this one.
1090 * In both cases we need to remove it from the ep_list.
1091 */
1092 if (fw_return_code != RDMA_RETURN_OK) {
1093 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1094 if ((ep->connect_mode == TCP_CONNECT_PASSIVE) &&
1095 (!ep->qp)) { /* Rejected */
1096 qed_iwarp_return_ep(p_hwfn, ep);
1097 } else {
1098 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1099 list_del(&ep->list_entry);
1100 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1101 }
1102 }
1103}
1104
1105static void
1106qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn,
1107 struct qed_iwarp_ep *ep, u8 *mpa_data_size)
1108{
1109 struct mpa_v2_hdr *mpa_v2_params;
1110 u16 mpa_ird, mpa_ord;
1111
1112 *mpa_data_size = 0;
1113 if (MPA_REV2(ep->mpa_rev)) {
1114 mpa_v2_params =
1115 (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata;
1116 *mpa_data_size = sizeof(*mpa_v2_params);
1117
1118 mpa_ird = (u16)ep->cm_info.ird;
1119 mpa_ord = (u16)ep->cm_info.ord;
1120
1121 if (ep->rtr_type != MPA_RTR_TYPE_NONE) {
1122 mpa_ird |= MPA_V2_PEER2PEER_MODEL;
1123
1124 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND)
1125 mpa_ird |= MPA_V2_SEND_RTR;
1126
1127 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE)
1128 mpa_ord |= MPA_V2_WRITE_RTR;
1129
1130 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ)
1131 mpa_ord |= MPA_V2_READ_RTR;
1132 }
1133
1134 mpa_v2_params->ird = htons(mpa_ird);
1135 mpa_v2_params->ord = htons(mpa_ord);
1136
1137 DP_VERBOSE(p_hwfn,
1138 QED_MSG_RDMA,
1139 "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n",
1140 mpa_v2_params->ird,
1141 mpa_v2_params->ord,
1142 *((u32 *)mpa_v2_params),
1143 mpa_ord & MPA_V2_IRD_ORD_MASK,
1144 mpa_ird & MPA_V2_IRD_ORD_MASK,
1145 !!(mpa_ird & MPA_V2_PEER2PEER_MODEL),
1146 !!(mpa_ird & MPA_V2_SEND_RTR),
1147 !!(mpa_ord & MPA_V2_WRITE_RTR),
1148 !!(mpa_ord & MPA_V2_READ_RTR));
1149 }
1150}
1151
1152int qed_iwarp_connect(void *rdma_cxt,
1153 struct qed_iwarp_connect_in *iparams,
1154 struct qed_iwarp_connect_out *oparams)
1155{
1156 struct qed_hwfn *p_hwfn = rdma_cxt;
1157 struct qed_iwarp_info *iwarp_info;
1158 struct qed_iwarp_ep *ep;
1159 u8 mpa_data_size = 0;
1160 u8 ts_hdr_size = 0;
1161 u32 cid;
1162 int rc;
1163
1164 if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) ||
1165 (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) {
1166 DP_NOTICE(p_hwfn,
1167 "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1168 iparams->qp->icid, iparams->cm_info.ord,
1169 iparams->cm_info.ird);
1170
1171 return -EINVAL;
1172 }
1173
1174 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1175
1176 /* Allocate ep object */
1177 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1178 if (rc)
1179 return rc;
1180
1181 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1182 if (rc)
1183 goto err;
1184
1185 ep->tcp_cid = cid;
1186
1187 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1188 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
1189 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1190
1191 ep->qp = iparams->qp;
1192 ep->qp->ep = ep;
1193 ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr);
1194 ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr);
1195 memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info));
1196
1197 ep->cm_info.ord = iparams->cm_info.ord;
1198 ep->cm_info.ird = iparams->cm_info.ird;
1199
1200 ep->rtr_type = iwarp_info->rtr_type;
1201 if (!iwarp_info->peer2peer)
1202 ep->rtr_type = MPA_RTR_TYPE_NONE;
1203
1204 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0))
1205 ep->cm_info.ord = 1;
1206
1207 ep->mpa_rev = iwarp_info->mpa_rev;
1208
1209 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1210
1211 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1212 ep->cm_info.private_data_len = iparams->cm_info.private_data_len +
1213 mpa_data_size;
1214
1215 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1216 iparams->cm_info.private_data,
1217 iparams->cm_info.private_data_len);
1218
1219 if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN)
1220 ts_hdr_size = TIMESTAMP_HEADER_SIZE;
1221
1222 ep->mss = iparams->mss - ts_hdr_size;
1223 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
1224
1225 ep->event_cb = iparams->event_cb;
1226 ep->cb_context = iparams->cb_context;
1227 ep->connect_mode = TCP_CONNECT_ACTIVE;
1228
1229 oparams->ep_context = ep;
1230
1231 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
1232
1233 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n",
1234 iparams->qp->icid, ep->tcp_cid, rc);
1235
1236 if (rc) {
1237 qed_iwarp_destroy_ep(p_hwfn, ep, true);
1238 goto err;
1239 }
1240
1241 return rc;
1242err:
1243 qed_iwarp_cid_cleaned(p_hwfn, cid);
1244
1245 return rc;
1246}
1247
1248static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn)
1249{
1250 struct qed_iwarp_ep *ep = NULL;
1251 int rc;
1252
1253 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1254
1255 if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1256 DP_ERR(p_hwfn, "Ep list is empty\n");
1257 goto out;
1258 }
1259
1260 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1261 struct qed_iwarp_ep, list_entry);
1262
1263 /* in some cases we could have failed allocating a tcp cid when added
1264 * from accept / failure... retry now..this is not the common case.
1265 */
1266 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
1267 rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
1268
1269 /* if we fail we could look for another entry with a valid
1270 * tcp_cid, but since we don't expect to reach this anyway
1271 * it's not worth the handling
1272 */
1273 if (rc) {
1274 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1275 ep = NULL;
1276 goto out;
1277 }
1278 }
1279
1280 list_del(&ep->list_entry);
1281
1282out:
1283 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1284 return ep;
1285}
1286
1287#define QED_IWARP_MAX_CID_CLEAN_TIME 100
1288#define QED_IWARP_MAX_NO_PROGRESS_CNT 5
1289
1290/* This function waits for all the bits of a bmap to be cleared, as long as
1291 * there is progress ( i.e. the number of bits left to be cleared decreases )
1292 * the function continues.
1293 */
1294static int
1295qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap)
1296{
1297 int prev_weight = 0;
1298 int wait_count = 0;
1299 int weight = 0;
1300
1301 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1302 prev_weight = weight;
1303
1304 while (weight) {
1305 msleep(QED_IWARP_MAX_CID_CLEAN_TIME);
1306
1307 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1308
1309 if (prev_weight == weight) {
1310 wait_count++;
1311 } else {
1312 prev_weight = weight;
1313 wait_count = 0;
1314 }
1315
1316 if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) {
1317 DP_NOTICE(p_hwfn,
1318 "%s bitmap wait timed out (%d cids pending)\n",
1319 bmap->name, weight);
1320 return -EBUSY;
1321 }
1322 }
1323 return 0;
1324}
1325
1326static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn)
1327{
1328 int rc;
1329 int i;
1330
1331 rc = qed_iwarp_wait_cid_map_cleared(p_hwfn,
1332 &p_hwfn->p_rdma_info->tcp_cid_map);
1333 if (rc)
1334 return rc;
1335
1336 /* Now free the tcp cids from the main cid map */
1337 for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++)
1338 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i);
1339
1340 /* Now wait for all cids to be completed */
1341 return qed_iwarp_wait_cid_map_cleared(p_hwfn,
1342 &p_hwfn->p_rdma_info->cid_map);
1343}
1344
1345static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn)
1346{
1347 struct qed_iwarp_ep *ep;
1348
1349 while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1350 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1351
1352 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1353 struct qed_iwarp_ep, list_entry);
1354
1355 if (!ep) {
1356 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1357 break;
1358 }
1359 list_del(&ep->list_entry);
1360
1361 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1362
1363 if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID)
1364 qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid);
1365
1366 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1367 }
1368}
1369
1370static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init)
1371{
1372 struct qed_iwarp_ep *ep;
1373 int rc = 0;
1374 int count;
1375 u32 cid;
1376 int i;
1377
1378 count = init ? QED_IWARP_PREALLOC_CNT : 1;
1379 for (i = 0; i < count; i++) {
1380 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1381 if (rc)
1382 return rc;
1383
1384 /* During initialization we allocate from the main pool,
1385 * afterwards we allocate only from the tcp_cid.
1386 */
1387 if (init) {
1388 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1389 if (rc)
1390 goto err;
1391 qed_iwarp_set_tcp_cid(p_hwfn, cid);
1392 } else {
1393 /* We don't care about the return code, it's ok if
1394 * tcp_cid remains invalid...in this case we'll
1395 * defer allocation
1396 */
1397 qed_iwarp_alloc_tcp_cid(p_hwfn, &cid);
1398 }
1399
1400 ep->tcp_cid = cid;
1401
1402 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1403 list_add_tail(&ep->list_entry,
1404 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
1405 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1406 }
1407
1408 return rc;
1409
1410err:
1411 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1412
1413 return rc;
1414}
1415
1416int qed_iwarp_alloc(struct qed_hwfn *p_hwfn)
1417{
1418 int rc;
1419
1420 /* Allocate bitmap for tcp cid. These are used by passive side
1421 * to ensure it can allocate a tcp cid during dpc that was
1422 * pre-acquired and doesn't require dynamic allocation of ilt
1423 */
1424 rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
1425 QED_IWARP_PREALLOC_CNT, "TCP_CID");
1426 if (rc) {
1427 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1428 "Failed to allocate tcp cid, rc = %d\n", rc);
1429 return rc;
1430 }
1431
1432 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list);
1433 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1434
1435 rc = qed_iwarp_prealloc_ep(p_hwfn, true);
1436 if (rc)
1437 return rc;
1438
1439 return qed_ooo_alloc(p_hwfn);
1440}
1441
1442void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn)
1443{
1444 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1445
1446 qed_ooo_free(p_hwfn);
1447 qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1);
1448 kfree(iwarp_info->mpa_bufs);
1449 kfree(iwarp_info->partial_fpdus);
1450 kfree(iwarp_info->mpa_intermediate_buf);
1451}
1452
1453int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams)
1454{
1455 struct qed_hwfn *p_hwfn = rdma_cxt;
1456 struct qed_iwarp_ep *ep;
1457 u8 mpa_data_size = 0;
1458 int rc;
1459
1460 ep = iparams->ep_context;
1461 if (!ep) {
1462 DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n");
1463 return -EINVAL;
1464 }
1465
1466 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
1467 iparams->qp->icid, ep->tcp_cid);
1468
1469 if ((iparams->ord > QED_IWARP_ORD_DEFAULT) ||
1470 (iparams->ird > QED_IWARP_IRD_DEFAULT)) {
1471 DP_VERBOSE(p_hwfn,
1472 QED_MSG_RDMA,
1473 "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1474 iparams->qp->icid,
1475 ep->tcp_cid, iparams->ord, iparams->ord);
1476 return -EINVAL;
1477 }
1478
1479 qed_iwarp_prealloc_ep(p_hwfn, false);
1480
1481 ep->cb_context = iparams->cb_context;
1482 ep->qp = iparams->qp;
1483 ep->qp->ep = ep;
1484
1485 if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
1486 /* Negotiate ord/ird: if upperlayer requested ord larger than
1487 * ird advertised by remote, we need to decrease our ord
1488 */
1489 if (iparams->ord > ep->cm_info.ird)
1490 iparams->ord = ep->cm_info.ird;
1491
1492 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) &&
1493 (iparams->ird == 0))
1494 iparams->ird = 1;
1495 }
1496
1497 /* Update cm_info ord/ird to be negotiated values */
1498 ep->cm_info.ord = iparams->ord;
1499 ep->cm_info.ird = iparams->ird;
1500
1501 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1502
1503 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1504 ep->cm_info.private_data_len = iparams->private_data_len +
1505 mpa_data_size;
1506
1507 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1508 iparams->private_data, iparams->private_data_len);
1509
1510 rc = qed_iwarp_mpa_offload(p_hwfn, ep);
1511 if (rc)
1512 qed_iwarp_modify_qp(p_hwfn,
1513 iparams->qp, QED_IWARP_QP_STATE_ERROR, 1);
1514
1515 return rc;
1516}
1517
1518int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams)
1519{
1520 struct qed_hwfn *p_hwfn = rdma_cxt;
1521 struct qed_iwarp_ep *ep;
1522 u8 mpa_data_size = 0;
1523
1524 ep = iparams->ep_context;
1525 if (!ep) {
1526 DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n");
1527 return -EINVAL;
1528 }
1529
1530 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid);
1531
1532 ep->cb_context = iparams->cb_context;
1533 ep->qp = NULL;
1534
1535 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1536
1537 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1538 ep->cm_info.private_data_len = iparams->private_data_len +
1539 mpa_data_size;
1540
1541 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1542 iparams->private_data, iparams->private_data_len);
1543
1544 return qed_iwarp_mpa_offload(p_hwfn, ep);
1545}
1546
1547static void
1548qed_iwarp_print_cm_info(struct qed_hwfn *p_hwfn,
1549 struct qed_iwarp_cm_info *cm_info)
1550{
1551 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "ip_version = %d\n",
1552 cm_info->ip_version);
1553
1554 if (cm_info->ip_version == QED_TCP_IPV4)
1555 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1556 "remote_ip %pI4h:%x, local_ip %pI4h:%x vlan=%x\n",
1557 cm_info->remote_ip, cm_info->remote_port,
1558 cm_info->local_ip, cm_info->local_port,
1559 cm_info->vlan);
1560 else
1561 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1562 "remote_ip %pI6:%x, local_ip %pI6:%x vlan=%x\n",
1563 cm_info->remote_ip, cm_info->remote_port,
1564 cm_info->local_ip, cm_info->local_port,
1565 cm_info->vlan);
1566
1567 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1568 "private_data_len = %x ord = %d, ird = %d\n",
1569 cm_info->private_data_len, cm_info->ord, cm_info->ird);
1570}
1571
1572static int
1573qed_iwarp_ll2_post_rx(struct qed_hwfn *p_hwfn,
1574 struct qed_iwarp_ll2_buff *buf, u8 handle)
1575{
1576 int rc;
1577
1578 rc = qed_ll2_post_rx_buffer(p_hwfn, handle, buf->data_phys_addr,
1579 (u16)buf->buff_size, buf, 1);
1580 if (rc) {
1581 DP_NOTICE(p_hwfn,
1582 "Failed to repost rx buffer to ll2 rc = %d, handle=%d\n",
1583 rc, handle);
1584 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buf->buff_size,
1585 buf->data, buf->data_phys_addr);
1586 kfree(buf);
1587 }
1588
1589 return rc;
1590}
1591
1592static bool
1593qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info)
1594{
1595 struct qed_iwarp_ep *ep = NULL;
1596 bool found = false;
1597
1598 list_for_each_entry(ep,
1599 &p_hwfn->p_rdma_info->iwarp.ep_list,
1600 list_entry) {
1601 if ((ep->cm_info.local_port == cm_info->local_port) &&
1602 (ep->cm_info.remote_port == cm_info->remote_port) &&
1603 (ep->cm_info.vlan == cm_info->vlan) &&
1604 !memcmp(&ep->cm_info.local_ip, cm_info->local_ip,
1605 sizeof(cm_info->local_ip)) &&
1606 !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip,
1607 sizeof(cm_info->remote_ip))) {
1608 found = true;
1609 break;
1610 }
1611 }
1612
1613 if (found) {
1614 DP_NOTICE(p_hwfn,
1615 "SYN received on active connection - dropping\n");
1616 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1617
1618 return true;
1619 }
1620
1621 return false;
1622}
1623
1624static struct qed_iwarp_listener *
1625qed_iwarp_get_listener(struct qed_hwfn *p_hwfn,
1626 struct qed_iwarp_cm_info *cm_info)
1627{
1628 struct qed_iwarp_listener *listener = NULL;
1629 static const u32 ip_zero[4] = { 0, 0, 0, 0 };
1630 bool found = false;
1631
1632 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1633
1634 list_for_each_entry(listener,
1635 &p_hwfn->p_rdma_info->iwarp.listen_list,
1636 list_entry) {
1637 if (listener->port == cm_info->local_port) {
1638 if (!memcmp(listener->ip_addr,
1639 ip_zero, sizeof(ip_zero))) {
1640 found = true;
1641 break;
1642 }
1643
1644 if (!memcmp(listener->ip_addr,
1645 cm_info->local_ip,
1646 sizeof(cm_info->local_ip)) &&
1647 (listener->vlan == cm_info->vlan)) {
1648 found = true;
1649 break;
1650 }
1651 }
1652 }
1653
1654 if (found) {
1655 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener found = %p\n",
1656 listener);
1657 return listener;
1658 }
1659
1660 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener not found\n");
1661 return NULL;
1662}
1663
1664static int
1665qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
1666 struct qed_iwarp_cm_info *cm_info,
1667 void *buf,
1668 u8 *remote_mac_addr,
1669 u8 *local_mac_addr,
1670 int *payload_len, int *tcp_start_offset)
1671{
1672 struct vlan_ethhdr *vethh;
1673 bool vlan_valid = false;
1674 struct ipv6hdr *ip6h;
1675 struct ethhdr *ethh;
1676 struct tcphdr *tcph;
1677 struct iphdr *iph;
1678 int eth_hlen;
1679 int ip_hlen;
1680 int eth_type;
1681 int i;
1682
1683 ethh = buf;
1684 eth_type = ntohs(ethh->h_proto);
1685 if (eth_type == ETH_P_8021Q) {
1686 vlan_valid = true;
1687 vethh = (struct vlan_ethhdr *)ethh;
1688 cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK;
1689 eth_type = ntohs(vethh->h_vlan_encapsulated_proto);
1690 }
1691
1692 eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
1693
1694 ether_addr_copy(remote_mac_addr, ethh->h_source);
1695 ether_addr_copy(local_mac_addr, ethh->h_dest);
1696
1697 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n",
1698 eth_type, ethh->h_source);
1699
1700 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_hlen=%d destination mac: %pM\n",
1701 eth_hlen, ethh->h_dest);
1702
1703 iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen);
1704
1705 if (eth_type == ETH_P_IP) {
1706 if (iph->protocol != IPPROTO_TCP) {
1707 DP_NOTICE(p_hwfn,
1708 "Unexpected ip protocol on ll2 %x\n",
1709 iph->protocol);
1710 return -EINVAL;
1711 }
1712
1713 cm_info->local_ip[0] = ntohl(iph->daddr);
1714 cm_info->remote_ip[0] = ntohl(iph->saddr);
1715 cm_info->ip_version = TCP_IPV4;
1716
1717 ip_hlen = (iph->ihl) * sizeof(u32);
1718 *payload_len = ntohs(iph->tot_len) - ip_hlen;
1719 } else if (eth_type == ETH_P_IPV6) {
1720 ip6h = (struct ipv6hdr *)iph;
1721
1722 if (ip6h->nexthdr != IPPROTO_TCP) {
1723 DP_NOTICE(p_hwfn,
1724 "Unexpected ip protocol on ll2 %x\n",
1725 iph->protocol);
1726 return -EINVAL;
1727 }
1728
1729 for (i = 0; i < 4; i++) {
1730 cm_info->local_ip[i] =
1731 ntohl(ip6h->daddr.in6_u.u6_addr32[i]);
1732 cm_info->remote_ip[i] =
1733 ntohl(ip6h->saddr.in6_u.u6_addr32[i]);
1734 }
1735 cm_info->ip_version = TCP_IPV6;
1736
1737 ip_hlen = sizeof(*ip6h);
1738 *payload_len = ntohs(ip6h->payload_len);
1739 } else {
1740 DP_NOTICE(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type);
1741 return -EINVAL;
1742 }
1743
1744 tcph = (struct tcphdr *)((u8 *)iph + ip_hlen);
1745
1746 if (!tcph->syn) {
1747 DP_NOTICE(p_hwfn,
1748 "Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n",
1749 iph->ihl, tcph->source, tcph->dest);
1750 return -EINVAL;
1751 }
1752
1753 cm_info->local_port = ntohs(tcph->dest);
1754 cm_info->remote_port = ntohs(tcph->source);
1755
1756 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1757
1758 *tcp_start_offset = eth_hlen + ip_hlen;
1759
1760 return 0;
1761}
1762
1763static struct qed_iwarp_fpdu *qed_iwarp_get_curr_fpdu(struct qed_hwfn *p_hwfn,
1764 u16 cid)
1765{
1766 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1767 struct qed_iwarp_fpdu *partial_fpdu;
1768 u32 idx;
1769
1770 idx = cid - qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP);
1771 if (idx >= iwarp_info->max_num_partial_fpdus) {
1772 DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid,
1773 iwarp_info->max_num_partial_fpdus);
1774 return NULL;
1775 }
1776
1777 partial_fpdu = &iwarp_info->partial_fpdus[idx];
1778
1779 return partial_fpdu;
1780}
1781
1782enum qed_iwarp_mpa_pkt_type {
1783 QED_IWARP_MPA_PKT_PACKED,
1784 QED_IWARP_MPA_PKT_PARTIAL,
1785 QED_IWARP_MPA_PKT_UNALIGNED
1786};
1787
1788#define QED_IWARP_INVALID_FPDU_LENGTH 0xffff
1789#define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2)
1790#define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4)
1791
1792/* Pad to multiple of 4 */
1793#define QED_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) ALIGN(data_len, 4)
1794#define QED_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \
1795 (QED_IWARP_PDU_DATA_LEN_WITH_PAD((_mpa_len) + \
1796 QED_IWARP_MPA_FPDU_LENGTH_SIZE) + \
1797 QED_IWARP_MPA_CRC32_DIGEST_SIZE)
1798
1799/* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */
1800#define QED_IWARP_MAX_BDS_PER_FPDU 3
1801
1802static const char * const pkt_type_str[] = {
1803 "QED_IWARP_MPA_PKT_PACKED",
1804 "QED_IWARP_MPA_PKT_PARTIAL",
1805 "QED_IWARP_MPA_PKT_UNALIGNED"
1806};
1807
1808static int
1809qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
1810 struct qed_iwarp_fpdu *fpdu,
1811 struct qed_iwarp_ll2_buff *buf);
1812
1813static enum qed_iwarp_mpa_pkt_type
1814qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn,
1815 struct qed_iwarp_fpdu *fpdu,
1816 u16 tcp_payload_len, u8 *mpa_data)
1817{
1818 enum qed_iwarp_mpa_pkt_type pkt_type;
1819 u16 mpa_len;
1820
1821 if (fpdu->incomplete_bytes) {
1822 pkt_type = QED_IWARP_MPA_PKT_UNALIGNED;
1823 goto out;
1824 }
1825
1826 /* special case of one byte remaining...
1827 * lower byte will be read next packet
1828 */
1829 if (tcp_payload_len == 1) {
1830 fpdu->fpdu_length = *mpa_data << BITS_PER_BYTE;
1831 pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
1832 goto out;
1833 }
1834
1835 mpa_len = ntohs(*((u16 *)(mpa_data)));
1836 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
1837
1838 if (fpdu->fpdu_length <= tcp_payload_len)
1839 pkt_type = QED_IWARP_MPA_PKT_PACKED;
1840 else
1841 pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
1842
1843out:
1844 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1845 "MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n",
1846 pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len);
1847
1848 return pkt_type;
1849}
1850
1851static void
1852qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf,
1853 struct qed_iwarp_fpdu *fpdu,
1854 struct unaligned_opaque_data *pkt_data,
1855 u16 tcp_payload_size, u8 placement_offset)
1856{
1857 fpdu->mpa_buf = buf;
1858 fpdu->pkt_hdr = buf->data_phys_addr + placement_offset;
1859 fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset;
1860 fpdu->mpa_frag = buf->data_phys_addr + pkt_data->first_mpa_offset;
1861 fpdu->mpa_frag_virt = (u8 *)(buf->data) + pkt_data->first_mpa_offset;
1862
1863 if (tcp_payload_size == 1)
1864 fpdu->incomplete_bytes = QED_IWARP_INVALID_FPDU_LENGTH;
1865 else if (tcp_payload_size < fpdu->fpdu_length)
1866 fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size;
1867 else
1868 fpdu->incomplete_bytes = 0; /* complete fpdu */
1869
1870 fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes;
1871}
1872
1873static int
1874qed_iwarp_cp_pkt(struct qed_hwfn *p_hwfn,
1875 struct qed_iwarp_fpdu *fpdu,
1876 struct unaligned_opaque_data *pkt_data,
1877 struct qed_iwarp_ll2_buff *buf, u16 tcp_payload_size)
1878{
1879 u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf;
1880 int rc;
1881
1882 /* need to copy the data from the partial packet stored in fpdu
1883 * to the new buf, for this we also need to move the data currently
1884 * placed on the buf. The assumption is that the buffer is big enough
1885 * since fpdu_length <= mss, we use an intermediate buffer since
1886 * we may need to copy the new data to an overlapping location
1887 */
1888 if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) {
1889 DP_ERR(p_hwfn,
1890 "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",
1891 buf->buff_size, fpdu->mpa_frag_len,
1892 tcp_payload_size, fpdu->incomplete_bytes);
1893 return -EINVAL;
1894 }
1895
1896 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1897 "MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n",
1898 fpdu->mpa_frag_virt, fpdu->mpa_frag_len,
1899 (u8 *)(buf->data) + pkt_data->first_mpa_offset,
1900 tcp_payload_size);
1901
1902 memcpy(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len);
1903 memcpy(tmp_buf + fpdu->mpa_frag_len,
1904 (u8 *)(buf->data) + pkt_data->first_mpa_offset,
1905 tcp_payload_size);
1906
1907 rc = qed_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf);
1908 if (rc)
1909 return rc;
1910
1911 /* If we managed to post the buffer copy the data to the new buffer
1912 * o/w this will occur in the next round...
1913 */
1914 memcpy((u8 *)(buf->data), tmp_buf,
1915 fpdu->mpa_frag_len + tcp_payload_size);
1916
1917 fpdu->mpa_buf = buf;
1918 /* fpdu->pkt_hdr remains as is */
1919 /* fpdu->mpa_frag is overridden with new buf */
1920 fpdu->mpa_frag = buf->data_phys_addr;
1921 fpdu->mpa_frag_virt = buf->data;
1922 fpdu->mpa_frag_len += tcp_payload_size;
1923
1924 fpdu->incomplete_bytes -= tcp_payload_size;
1925
1926 DP_VERBOSE(p_hwfn,
1927 QED_MSG_RDMA,
1928 "MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n",
1929 buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size,
1930 fpdu->incomplete_bytes);
1931
1932 return 0;
1933}
1934
1935static void
1936qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn,
1937 struct qed_iwarp_fpdu *fpdu, u8 *mpa_data)
1938{
1939 u16 mpa_len;
1940
1941 /* Update incomplete packets if needed */
1942 if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) {
1943 /* Missing lower byte is now available */
1944 mpa_len = fpdu->fpdu_length | *mpa_data;
1945 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
1946 /* one byte of hdr */
1947 fpdu->mpa_frag_len = 1;
1948 fpdu->incomplete_bytes = fpdu->fpdu_length - 1;
1949 DP_VERBOSE(p_hwfn,
1950 QED_MSG_RDMA,
1951 "MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n",
1952 mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes);
1953 }
1954}
1955
1956#define QED_IWARP_IS_RIGHT_EDGE(_curr_pkt) \
1957 (GET_FIELD((_curr_pkt)->flags, \
1958 UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE))
1959
1960/* This function is used to recycle a buffer using the ll2 drop option. It
1961 * uses the mechanism to ensure that all buffers posted to tx before this one
1962 * were completed. The buffer sent here will be sent as a cookie in the tx
1963 * completion function and can then be reposted to rx chain when done. The flow
1964 * that requires this is the flow where a FPDU splits over more than 3 tcp
1965 * segments. In this case the driver needs to re-post a rx buffer instead of
1966 * the one received, but driver can't simply repost a buffer it copied from
1967 * as there is a case where the buffer was originally a packed FPDU, and is
1968 * partially posted to FW. Driver needs to ensure FW is done with it.
1969 */
1970static int
1971qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
1972 struct qed_iwarp_fpdu *fpdu,
1973 struct qed_iwarp_ll2_buff *buf)
1974{
1975 struct qed_ll2_tx_pkt_info tx_pkt;
1976 u8 ll2_handle;
1977 int rc;
1978
1979 memset(&tx_pkt, 0, sizeof(tx_pkt));
1980 tx_pkt.num_of_bds = 1;
1981 tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP;
1982 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
1983 tx_pkt.first_frag = fpdu->pkt_hdr;
1984 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
1985 buf->piggy_buf = NULL;
1986 tx_pkt.cookie = buf;
1987
1988 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
1989
1990 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
1991 if (rc)
1992 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1993 "Can't drop packet rc=%d\n", rc);
1994
1995 DP_VERBOSE(p_hwfn,
1996 QED_MSG_RDMA,
1997 "MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n",
1998 (unsigned long int)tx_pkt.first_frag,
1999 tx_pkt.first_frag_len, buf, rc);
2000
2001 return rc;
2002}
2003
2004static int
2005qed_iwarp_win_right_edge(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu)
2006{
2007 struct qed_ll2_tx_pkt_info tx_pkt;
2008 u8 ll2_handle;
2009 int rc;
2010
2011 memset(&tx_pkt, 0, sizeof(tx_pkt));
2012 tx_pkt.num_of_bds = 1;
2013 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2014 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
2015
2016 tx_pkt.first_frag = fpdu->pkt_hdr;
2017 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
2018 tx_pkt.enable_ip_cksum = true;
2019 tx_pkt.enable_l4_cksum = true;
2020 tx_pkt.calc_ip_len = true;
2021 /* vlan overload with enum iwarp_ll2_tx_queues */
2022 tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE;
2023
2024 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2025
2026 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2027 if (rc)
2028 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2029 "Can't send right edge rc=%d\n", rc);
2030 DP_VERBOSE(p_hwfn,
2031 QED_MSG_RDMA,
2032 "MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n",
2033 tx_pkt.num_of_bds,
2034 (unsigned long int)tx_pkt.first_frag,
2035 tx_pkt.first_frag_len, rc);
2036
2037 return rc;
2038}
2039
2040static int
2041qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn,
2042 struct qed_iwarp_fpdu *fpdu,
2043 struct unaligned_opaque_data *curr_pkt,
2044 struct qed_iwarp_ll2_buff *buf,
2045 u16 tcp_payload_size, enum qed_iwarp_mpa_pkt_type pkt_type)
2046{
2047 struct qed_ll2_tx_pkt_info tx_pkt;
2048 u8 ll2_handle;
2049 int rc;
2050
2051 memset(&tx_pkt, 0, sizeof(tx_pkt));
2052
2053 /* An unaligned packet means it's split over two tcp segments. So the
2054 * complete packet requires 3 bds, one for the header, one for the
2055 * part of the fpdu of the first tcp segment, and the last fragment
2056 * will point to the remainder of the fpdu. A packed pdu, requires only
2057 * two bds, one for the header and one for the data.
2058 */
2059 tx_pkt.num_of_bds = (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2;
2060 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2061 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; /* offset in words */
2062
2063 /* Send the mpa_buf only with the last fpdu (in case of packed) */
2064 if (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED ||
2065 tcp_payload_size <= fpdu->fpdu_length)
2066 tx_pkt.cookie = fpdu->mpa_buf;
2067
2068 tx_pkt.first_frag = fpdu->pkt_hdr;
2069 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
2070 tx_pkt.enable_ip_cksum = true;
2071 tx_pkt.enable_l4_cksum = true;
2072 tx_pkt.calc_ip_len = true;
2073 /* vlan overload with enum iwarp_ll2_tx_queues */
2074 tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE;
2075
2076 /* special case of unaligned packet and not packed, need to send
2077 * both buffers as cookie to release.
2078 */
2079 if (tcp_payload_size == fpdu->incomplete_bytes)
2080 fpdu->mpa_buf->piggy_buf = buf;
2081
2082 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2083
2084 /* Set first fragment to header */
2085 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2086 if (rc)
2087 goto out;
2088
2089 /* Set second fragment to first part of packet */
2090 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle,
2091 fpdu->mpa_frag,
2092 fpdu->mpa_frag_len);
2093 if (rc)
2094 goto out;
2095
2096 if (!fpdu->incomplete_bytes)
2097 goto out;
2098
2099 /* Set third fragment to second part of the packet */
2100 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn,
2101 ll2_handle,
2102 buf->data_phys_addr +
2103 curr_pkt->first_mpa_offset,
2104 fpdu->incomplete_bytes);
2105out:
2106 DP_VERBOSE(p_hwfn,
2107 QED_MSG_RDMA,
2108 "MPA_ALIGN: Sent FPDU num_bds=%d first_frag_len=%x, mpa_frag_len=0x%x, incomplete_bytes:0x%x rc=%d\n",
2109 tx_pkt.num_of_bds,
2110 tx_pkt.first_frag_len,
2111 fpdu->mpa_frag_len,
2112 fpdu->incomplete_bytes, rc);
2113
2114 return rc;
2115}
2116
2117static void
2118qed_iwarp_mpa_get_data(struct qed_hwfn *p_hwfn,
2119 struct unaligned_opaque_data *curr_pkt,
2120 u32 opaque_data0, u32 opaque_data1)
2121{
2122 u64 opaque_data;
2123
2124 opaque_data = HILO_64(opaque_data1, opaque_data0);
2125 *curr_pkt = *((struct unaligned_opaque_data *)&opaque_data);
2126
2127 curr_pkt->first_mpa_offset = curr_pkt->tcp_payload_offset +
2128 le16_to_cpu(curr_pkt->first_mpa_offset);
2129 curr_pkt->cid = le32_to_cpu(curr_pkt->cid);
2130}
2131
2132/* This function is called when an unaligned or incomplete MPA packet arrives
2133 * driver needs to align the packet, perhaps using previous data and send
2134 * it down to FW once it is aligned.
2135 */
2136static int
2137qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn,
2138 struct qed_iwarp_ll2_mpa_buf *mpa_buf)
2139{
2140 struct unaligned_opaque_data *curr_pkt = &mpa_buf->data;
2141 struct qed_iwarp_ll2_buff *buf = mpa_buf->ll2_buf;
2142 enum qed_iwarp_mpa_pkt_type pkt_type;
2143 struct qed_iwarp_fpdu *fpdu;
2144 int rc = -EINVAL;
2145 u8 *mpa_data;
2146
2147 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, curr_pkt->cid & 0xffff);
2148 if (!fpdu) { /* something corrupt with cid, post rx back */
2149 DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n",
2150 curr_pkt->cid);
2151 goto err;
2152 }
2153
2154 do {
2155 mpa_data = ((u8 *)(buf->data) + curr_pkt->first_mpa_offset);
2156
2157 pkt_type = qed_iwarp_mpa_classify(p_hwfn, fpdu,
2158 mpa_buf->tcp_payload_len,
2159 mpa_data);
2160
2161 switch (pkt_type) {
2162 case QED_IWARP_MPA_PKT_PARTIAL:
2163 qed_iwarp_init_fpdu(buf, fpdu,
2164 curr_pkt,
2165 mpa_buf->tcp_payload_len,
2166 mpa_buf->placement_offset);
2167
2168 if (!QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
2169 mpa_buf->tcp_payload_len = 0;
2170 break;
2171 }
2172
2173 rc = qed_iwarp_win_right_edge(p_hwfn, fpdu);
2174
2175 if (rc) {
2176 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2177 "Can't send FPDU:reset rc=%d\n", rc);
2178 memset(fpdu, 0, sizeof(*fpdu));
2179 break;
2180 }
2181
2182 mpa_buf->tcp_payload_len = 0;
2183 break;
2184 case QED_IWARP_MPA_PKT_PACKED:
2185 qed_iwarp_init_fpdu(buf, fpdu,
2186 curr_pkt,
2187 mpa_buf->tcp_payload_len,
2188 mpa_buf->placement_offset);
2189
2190 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
2191 mpa_buf->tcp_payload_len,
2192 pkt_type);
2193 if (rc) {
2194 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2195 "Can't send FPDU:reset rc=%d\n", rc);
2196 memset(fpdu, 0, sizeof(*fpdu));
2197 break;
2198 }
2199
2200 mpa_buf->tcp_payload_len -= fpdu->fpdu_length;
2201 curr_pkt->first_mpa_offset += fpdu->fpdu_length;
2202 break;
2203 case QED_IWARP_MPA_PKT_UNALIGNED:
2204 qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data);
2205 if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) {
2206 /* special handling of fpdu split over more
2207 * than 2 segments
2208 */
2209 if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
2210 rc = qed_iwarp_win_right_edge(p_hwfn,
2211 fpdu);
2212 /* packet will be re-processed later */
2213 if (rc)
2214 return rc;
2215 }
2216
2217 rc = qed_iwarp_cp_pkt(p_hwfn, fpdu, curr_pkt,
2218 buf,
2219 mpa_buf->tcp_payload_len);
2220 if (rc) /* packet will be re-processed later */
2221 return rc;
2222
2223 mpa_buf->tcp_payload_len = 0;
2224 break;
2225 }
2226
2227 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
2228 mpa_buf->tcp_payload_len,
2229 pkt_type);
2230 if (rc) {
2231 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2232 "Can't send FPDU:delay rc=%d\n", rc);
2233 /* don't reset fpdu -> we need it for next
2234 * classify
2235 */
2236 break;
2237 }
2238
2239 mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes;
2240 curr_pkt->first_mpa_offset += fpdu->incomplete_bytes;
2241 /* The framed PDU was sent - no more incomplete bytes */
2242 fpdu->incomplete_bytes = 0;
2243 break;
2244 }
2245 } while (mpa_buf->tcp_payload_len && !rc);
2246
2247 return rc;
2248
2249err:
2250 qed_iwarp_ll2_post_rx(p_hwfn,
2251 buf,
2252 p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle);
2253 return rc;
2254}
2255
2256static void qed_iwarp_process_pending_pkts(struct qed_hwfn *p_hwfn)
2257{
2258 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2259 struct qed_iwarp_ll2_mpa_buf *mpa_buf = NULL;
2260 int rc;
2261
2262 while (!list_empty(&iwarp_info->mpa_buf_pending_list)) {
2263 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_pending_list,
2264 struct qed_iwarp_ll2_mpa_buf,
2265 list_entry);
2266
2267 rc = qed_iwarp_process_mpa_pkt(p_hwfn, mpa_buf);
2268
2269 /* busy means break and continue processing later, don't
2270 * remove the buf from the pending list.
2271 */
2272 if (rc == -EBUSY)
2273 break;
2274
2275 list_del(&mpa_buf->list_entry);
2276 list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_list);
2277
2278 if (rc) { /* different error, don't continue */
2279 DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc);
2280 break;
2281 }
2282 }
2283}
2284
2285static void
2286qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
2287{
2288 struct qed_iwarp_ll2_mpa_buf *mpa_buf;
2289 struct qed_iwarp_info *iwarp_info;
2290 struct qed_hwfn *p_hwfn = cxt;
2291
2292 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2293 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_list,
2294 struct qed_iwarp_ll2_mpa_buf, list_entry);
2295 if (!mpa_buf) {
2296 DP_ERR(p_hwfn, "No free mpa buf\n");
2297 goto err;
2298 }
2299
2300 list_del(&mpa_buf->list_entry);
2301 qed_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data,
2302 data->opaque_data_0, data->opaque_data_1);
2303
2304 DP_VERBOSE(p_hwfn,
2305 QED_MSG_RDMA,
2306 "LL2 MPA CompRx payload_len:0x%x\tfirst_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n",
2307 data->length.packet_length, mpa_buf->data.first_mpa_offset,
2308 mpa_buf->data.tcp_payload_offset, mpa_buf->data.flags,
2309 mpa_buf->data.cid);
2310
2311 mpa_buf->ll2_buf = data->cookie;
2312 mpa_buf->tcp_payload_len = data->length.packet_length -
2313 mpa_buf->data.first_mpa_offset;
2314 mpa_buf->data.first_mpa_offset += data->u.placement_offset;
2315 mpa_buf->placement_offset = data->u.placement_offset;
2316
2317 list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_pending_list);
2318
2319 qed_iwarp_process_pending_pkts(p_hwfn);
2320 return;
2321err:
2322 qed_iwarp_ll2_post_rx(p_hwfn, data->cookie,
2323 iwarp_info->ll2_mpa_handle);
2324}
2325
2326static void
2327qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
2328{
2329 struct qed_iwarp_ll2_buff *buf = data->cookie;
2330 struct qed_iwarp_listener *listener;
2331 struct qed_ll2_tx_pkt_info tx_pkt;
2332 struct qed_iwarp_cm_info cm_info;
2333 struct qed_hwfn *p_hwfn = cxt;
2334 u8 remote_mac_addr[ETH_ALEN];
2335 u8 local_mac_addr[ETH_ALEN];
2336 struct qed_iwarp_ep *ep;
2337 int tcp_start_offset;
2338 u8 ts_hdr_size = 0;
2339 u8 ll2_syn_handle;
2340 int payload_len;
2341 u32 hdr_size;
2342 int rc;
2343
2344 memset(&cm_info, 0, sizeof(cm_info));
2345 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
2346
2347 /* Check if packet was received with errors... */
2348 if (data->err_flags) {
2349 DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n",
2350 data->err_flags);
2351 goto err;
2352 }
2353
2354 if (GET_FIELD(data->parse_flags,
2355 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) &&
2356 GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) {
2357 DP_NOTICE(p_hwfn, "Syn packet received with checksum error\n");
2358 goto err;
2359 }
2360
2361 rc = qed_iwarp_parse_rx_pkt(p_hwfn, &cm_info, (u8 *)(buf->data) +
2362 data->u.placement_offset, remote_mac_addr,
2363 local_mac_addr, &payload_len,
2364 &tcp_start_offset);
2365 if (rc)
2366 goto err;
2367
2368 /* Check if there is a listener for this 4-tuple+vlan */
2369 listener = qed_iwarp_get_listener(p_hwfn, &cm_info);
2370 if (!listener) {
2371 DP_VERBOSE(p_hwfn,
2372 QED_MSG_RDMA,
2373 "SYN received on tuple not listened on parse_flags=%d packet len=%d\n",
2374 data->parse_flags, data->length.packet_length);
2375
2376 memset(&tx_pkt, 0, sizeof(tx_pkt));
2377 tx_pkt.num_of_bds = 1;
2378 tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2;
2379 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2380 tx_pkt.first_frag = buf->data_phys_addr +
2381 data->u.placement_offset;
2382 tx_pkt.first_frag_len = data->length.packet_length;
2383 tx_pkt.cookie = buf;
2384
2385 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_syn_handle,
2386 &tx_pkt, true);
2387
2388 if (rc) {
2389 DP_NOTICE(p_hwfn,
2390 "Can't post SYN back to chip rc=%d\n", rc);
2391 goto err;
2392 }
2393 return;
2394 }
2395
2396 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n");
2397 /* There may be an open ep on this connection if this is a syn
2398 * retrasnmit... need to make sure there isn't...
2399 */
2400 if (qed_iwarp_ep_exists(p_hwfn, &cm_info))
2401 goto err;
2402
2403 ep = qed_iwarp_get_free_ep(p_hwfn);
2404 if (!ep)
2405 goto err;
2406
2407 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2408 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
2409 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2410
2411 ether_addr_copy(ep->remote_mac_addr, remote_mac_addr);
2412 ether_addr_copy(ep->local_mac_addr, local_mac_addr);
2413
2414 memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info));
2415
2416 if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN)
2417 ts_hdr_size = TIMESTAMP_HEADER_SIZE;
2418
2419 hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60) +
2420 ts_hdr_size;
2421 ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size;
2422 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
2423
2424 ep->event_cb = listener->event_cb;
2425 ep->cb_context = listener->cb_context;
2426 ep->connect_mode = TCP_CONNECT_PASSIVE;
2427
2428 ep->syn = buf;
2429 ep->syn_ip_payload_length = (u16)payload_len;
2430 ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset +
2431 tcp_start_offset;
2432
2433 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
2434 if (rc) {
2435 qed_iwarp_return_ep(p_hwfn, ep);
2436 goto err;
2437 }
2438
2439 return;
2440err:
2441 qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle);
2442}
2443
2444static void qed_iwarp_ll2_rel_rx_pkt(void *cxt, u8 connection_handle,
2445 void *cookie, dma_addr_t rx_buf_addr,
2446 bool b_last_packet)
2447{
2448 struct qed_iwarp_ll2_buff *buffer = cookie;
2449 struct qed_hwfn *p_hwfn = cxt;
2450
2451 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
2452 buffer->data, buffer->data_phys_addr);
2453 kfree(buffer);
2454}
2455
2456static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle,
2457 void *cookie, dma_addr_t first_frag_addr,
2458 bool b_last_fragment, bool b_last_packet)
2459{
2460 struct qed_iwarp_ll2_buff *buffer = cookie;
2461 struct qed_iwarp_ll2_buff *piggy;
2462 struct qed_hwfn *p_hwfn = cxt;
2463
2464 if (!buffer) /* can happen in packed mpa unaligned... */
2465 return;
2466
2467 /* this was originally an rx packet, post it back */
2468 piggy = buffer->piggy_buf;
2469 if (piggy) {
2470 buffer->piggy_buf = NULL;
2471 qed_iwarp_ll2_post_rx(p_hwfn, piggy, connection_handle);
2472 }
2473
2474 qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle);
2475
2476 if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle)
2477 qed_iwarp_process_pending_pkts(p_hwfn);
2478
2479 return;
2480}
2481
2482static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle,
2483 void *cookie, dma_addr_t first_frag_addr,
2484 bool b_last_fragment, bool b_last_packet)
2485{
2486 struct qed_iwarp_ll2_buff *buffer = cookie;
2487 struct qed_hwfn *p_hwfn = cxt;
2488
2489 if (!buffer)
2490 return;
2491
2492 if (buffer->piggy_buf) {
2493 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
2494 buffer->piggy_buf->buff_size,
2495 buffer->piggy_buf->data,
2496 buffer->piggy_buf->data_phys_addr);
2497
2498 kfree(buffer->piggy_buf);
2499 }
2500
2501 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
2502 buffer->data, buffer->data_phys_addr);
2503
2504 kfree(buffer);
2505}
2506
2507/* The only slowpath for iwarp ll2 is unalign flush. When this completion
2508 * is received, need to reset the FPDU.
2509 */
2510void
2511qed_iwarp_ll2_slowpath(void *cxt,
2512 u8 connection_handle,
2513 u32 opaque_data_0, u32 opaque_data_1)
2514{
2515 struct unaligned_opaque_data unalign_data;
2516 struct qed_hwfn *p_hwfn = cxt;
2517 struct qed_iwarp_fpdu *fpdu;
2518
2519 qed_iwarp_mpa_get_data(p_hwfn, &unalign_data,
2520 opaque_data_0, opaque_data_1);
2521
2522 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "(0x%x) Flush fpdu\n",
2523 unalign_data.cid);
2524
2525 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)unalign_data.cid);
2526 if (fpdu)
2527 memset(fpdu, 0, sizeof(*fpdu));
2528}
2529
2530static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
2531{
2532 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2533 int rc = 0;
2534
2535 if (iwarp_info->ll2_syn_handle != QED_IWARP_HANDLE_INVAL) {
2536 rc = qed_ll2_terminate_connection(p_hwfn,
2537 iwarp_info->ll2_syn_handle);
2538 if (rc)
2539 DP_INFO(p_hwfn, "Failed to terminate syn connection\n");
2540
2541 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_syn_handle);
2542 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
2543 }
2544
2545 if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) {
2546 rc = qed_ll2_terminate_connection(p_hwfn,
2547 iwarp_info->ll2_ooo_handle);
2548 if (rc)
2549 DP_INFO(p_hwfn, "Failed to terminate ooo connection\n");
2550
2551 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
2552 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
2553 }
2554
2555 if (iwarp_info->ll2_mpa_handle != QED_IWARP_HANDLE_INVAL) {
2556 rc = qed_ll2_terminate_connection(p_hwfn,
2557 iwarp_info->ll2_mpa_handle);
2558 if (rc)
2559 DP_INFO(p_hwfn, "Failed to terminate mpa connection\n");
2560
2561 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
2562 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
2563 }
2564
2565 qed_llh_remove_mac_filter(p_hwfn,
2566 p_ptt, p_hwfn->p_rdma_info->iwarp.mac_addr);
2567 return rc;
2568}
2569
2570static int
2571qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn,
2572 int num_rx_bufs, int buff_size, u8 ll2_handle)
2573{
2574 struct qed_iwarp_ll2_buff *buffer;
2575 int rc = 0;
2576 int i;
2577
2578 for (i = 0; i < num_rx_bufs; i++) {
2579 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
2580 if (!buffer) {
2581 rc = -ENOMEM;
2582 break;
2583 }
2584
2585 buffer->data = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
2586 buff_size,
2587 &buffer->data_phys_addr,
2588 GFP_KERNEL);
2589 if (!buffer->data) {
2590 kfree(buffer);
2591 rc = -ENOMEM;
2592 break;
2593 }
2594
2595 buffer->buff_size = buff_size;
2596 rc = qed_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle);
2597 if (rc)
2598 /* buffers will be deallocated by qed_ll2 */
2599 break;
2600 }
2601 return rc;
2602}
2603
2604#define QED_IWARP_MAX_BUF_SIZE(mtu) \
2605 ALIGN((mtu) + ETH_HLEN + 2 * VLAN_HLEN + 2 + ETH_CACHE_LINE_SIZE, \
2606 ETH_CACHE_LINE_SIZE)
2607
2608static int
2609qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
2610 struct qed_rdma_start_in_params *params,
2611 struct qed_ptt *p_ptt)
2612{
2613 struct qed_iwarp_info *iwarp_info;
2614 struct qed_ll2_acquire_data data;
2615 struct qed_ll2_cbs cbs;
2616 u32 mpa_buff_size;
2617 u16 n_ooo_bufs;
2618 int rc = 0;
2619 int i;
2620
2621 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2622 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
2623 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
2624 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
2625
2626 iwarp_info->max_mtu = params->max_mtu;
2627
2628 ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr);
2629
2630 rc = qed_llh_add_mac_filter(p_hwfn, p_ptt, params->mac_addr);
2631 if (rc)
2632 return rc;
2633
2634 /* Start SYN connection */
2635 cbs.rx_comp_cb = qed_iwarp_ll2_comp_syn_pkt;
2636 cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt;
2637 cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt;
2638 cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt;
2639 cbs.cookie = p_hwfn;
2640
2641 memset(&data, 0, sizeof(data));
2642 data.input.conn_type = QED_LL2_TYPE_IWARP;
2643 data.input.mtu = QED_IWARP_MAX_SYN_PKT_SIZE;
2644 data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE;
2645 data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE;
2646 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
2647 data.input.tx_tc = PKT_LB_TC;
2648 data.input.tx_dest = QED_LL2_TX_DEST_LB;
2649 data.p_connection_handle = &iwarp_info->ll2_syn_handle;
2650 data.cbs = &cbs;
2651
2652 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2653 if (rc) {
2654 DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n");
2655 qed_llh_remove_mac_filter(p_hwfn, p_ptt, params->mac_addr);
2656 return rc;
2657 }
2658
2659 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle);
2660 if (rc) {
2661 DP_NOTICE(p_hwfn, "Failed to establish LL2 connection\n");
2662 goto err;
2663 }
2664
2665 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
2666 QED_IWARP_LL2_SYN_RX_SIZE,
2667 QED_IWARP_MAX_SYN_PKT_SIZE,
2668 iwarp_info->ll2_syn_handle);
2669 if (rc)
2670 goto err;
2671
2672 /* Start OOO connection */
2673 data.input.conn_type = QED_LL2_TYPE_OOO;
2674 data.input.mtu = params->max_mtu;
2675
2676 n_ooo_bufs = (QED_IWARP_MAX_OOO * QED_IWARP_RCV_WND_SIZE_DEF) /
2677 iwarp_info->max_mtu;
2678 n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE);
2679
2680 data.input.rx_num_desc = n_ooo_bufs;
2681 data.input.rx_num_ooo_buffers = n_ooo_bufs;
2682
2683 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
2684 data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE;
2685 data.p_connection_handle = &iwarp_info->ll2_ooo_handle;
2686
2687 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2688 if (rc)
2689 goto err;
2690
2691 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
2692 if (rc)
2693 goto err;
2694
2695 /* Start Unaligned MPA connection */
2696 cbs.rx_comp_cb = qed_iwarp_ll2_comp_mpa_pkt;
2697 cbs.slowpath_cb = qed_iwarp_ll2_slowpath;
2698
2699 memset(&data, 0, sizeof(data));
2700 data.input.conn_type = QED_LL2_TYPE_IWARP;
2701 data.input.mtu = params->max_mtu;
2702 /* FW requires that once a packet arrives OOO, it must have at
2703 * least 2 rx buffers available on the unaligned connection
2704 * for handling the case that it is a partial fpdu.
2705 */
2706 data.input.rx_num_desc = n_ooo_bufs * 2;
2707 data.input.tx_num_desc = data.input.rx_num_desc;
2708 data.input.tx_max_bds_per_packet = QED_IWARP_MAX_BDS_PER_FPDU;
2709 data.p_connection_handle = &iwarp_info->ll2_mpa_handle;
2710 data.input.secondary_queue = true;
2711 data.cbs = &cbs;
2712
2713 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2714 if (rc)
2715 goto err;
2716
2717 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
2718 if (rc)
2719 goto err;
2720
2721 mpa_buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu);
2722 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
2723 data.input.rx_num_desc,
2724 mpa_buff_size,
2725 iwarp_info->ll2_mpa_handle);
2726 if (rc)
2727 goto err;
2728
2729 iwarp_info->partial_fpdus = kcalloc((u16)p_hwfn->p_rdma_info->num_qps,
2730 sizeof(*iwarp_info->partial_fpdus),
2731 GFP_KERNEL);
2732 if (!iwarp_info->partial_fpdus)
2733 goto err;
2734
2735 iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps;
2736
2737 iwarp_info->mpa_intermediate_buf = kzalloc(mpa_buff_size, GFP_KERNEL);
2738 if (!iwarp_info->mpa_intermediate_buf)
2739 goto err;
2740
2741 /* The mpa_bufs array serves for pending RX packets received on the
2742 * mpa ll2 that don't have place on the tx ring and require later
2743 * processing. We can't fail on allocation of such a struct therefore
2744 * we allocate enough to take care of all rx packets
2745 */
2746 iwarp_info->mpa_bufs = kcalloc(data.input.rx_num_desc,
2747 sizeof(*iwarp_info->mpa_bufs),
2748 GFP_KERNEL);
2749 if (!iwarp_info->mpa_bufs)
2750 goto err;
2751
2752 INIT_LIST_HEAD(&iwarp_info->mpa_buf_pending_list);
2753 INIT_LIST_HEAD(&iwarp_info->mpa_buf_list);
2754 for (i = 0; i < data.input.rx_num_desc; i++)
2755 list_add_tail(&iwarp_info->mpa_bufs[i].list_entry,
2756 &iwarp_info->mpa_buf_list);
2757 return rc;
2758err:
2759 qed_iwarp_ll2_stop(p_hwfn, p_ptt);
2760
2761 return rc;
2762}
2763
2764int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
2765 struct qed_rdma_start_in_params *params)
2766{
2767 struct qed_iwarp_info *iwarp_info;
2768 u32 rcv_wnd_size;
2769
2770 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2771
2772 iwarp_info->tcp_flags = QED_IWARP_TS_EN;
2773 rcv_wnd_size = QED_IWARP_RCV_WND_SIZE_DEF;
2774
2775 /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */
2776 iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) -
2777 ilog2(QED_IWARP_RCV_WND_SIZE_MIN);
2778 iwarp_info->rcv_wnd_size = rcv_wnd_size >> iwarp_info->rcv_wnd_scale;
2779 iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED;
2780 iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
2781
2782 iwarp_info->peer2peer = QED_IWARP_PARAM_P2P;
2783
2784 iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND |
2785 MPA_RTR_TYPE_ZERO_WRITE |
2786 MPA_RTR_TYPE_ZERO_READ;
2787
2788 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock);
2789 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list);
2790 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list);
2791
2792 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP,
2793 qed_iwarp_async_event);
2794 qed_ooo_setup(p_hwfn);
2795
2796 return qed_iwarp_ll2_start(p_hwfn, params, p_ptt);
2797}
2798
2799int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
2800{
2801 int rc;
2802
2803 qed_iwarp_free_prealloc_ep(p_hwfn);
2804 rc = qed_iwarp_wait_for_all_cids(p_hwfn);
2805 if (rc)
2806 return rc;
2807
2808 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP);
2809
2810 return qed_iwarp_ll2_stop(p_hwfn, p_ptt);
2811}
2812
2813void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn,
2814 struct qed_iwarp_ep *ep, u8 fw_return_code)
2815{
2816 struct qed_iwarp_cm_event_params params;
2817
2818 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_ERROR, true);
2819
2820 params.event = QED_IWARP_EVENT_CLOSE;
2821 params.ep_context = ep;
2822 params.cm_info = &ep->cm_info;
2823 params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ?
2824 0 : -ECONNRESET;
2825
2826 ep->state = QED_IWARP_EP_CLOSED;
2827 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2828 list_del(&ep->list_entry);
2829 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2830
2831 ep->event_cb(ep->cb_context, ¶ms);
2832}
2833
2834void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn,
2835 struct qed_iwarp_ep *ep, int fw_ret_code)
2836{
2837 struct qed_iwarp_cm_event_params params;
2838 bool event_cb = false;
2839
2840 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n",
2841 ep->cid, fw_ret_code);
2842
2843 switch (fw_ret_code) {
2844 case IWARP_EXCEPTION_DETECTED_LLP_CLOSED:
2845 params.status = 0;
2846 params.event = QED_IWARP_EVENT_DISCONNECT;
2847 event_cb = true;
2848 break;
2849 case IWARP_EXCEPTION_DETECTED_LLP_RESET:
2850 params.status = -ECONNRESET;
2851 params.event = QED_IWARP_EVENT_DISCONNECT;
2852 event_cb = true;
2853 break;
2854 case IWARP_EXCEPTION_DETECTED_RQ_EMPTY:
2855 params.event = QED_IWARP_EVENT_RQ_EMPTY;
2856 event_cb = true;
2857 break;
2858 case IWARP_EXCEPTION_DETECTED_IRQ_FULL:
2859 params.event = QED_IWARP_EVENT_IRQ_FULL;
2860 event_cb = true;
2861 break;
2862 case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT:
2863 params.event = QED_IWARP_EVENT_LLP_TIMEOUT;
2864 event_cb = true;
2865 break;
2866 case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR:
2867 params.event = QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR;
2868 event_cb = true;
2869 break;
2870 case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW:
2871 params.event = QED_IWARP_EVENT_CQ_OVERFLOW;
2872 event_cb = true;
2873 break;
2874 case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC:
2875 params.event = QED_IWARP_EVENT_QP_CATASTROPHIC;
2876 event_cb = true;
2877 break;
2878 case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR:
2879 params.event = QED_IWARP_EVENT_LOCAL_ACCESS_ERROR;
2880 event_cb = true;
2881 break;
2882 case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR:
2883 params.event = QED_IWARP_EVENT_REMOTE_OPERATION_ERROR;
2884 event_cb = true;
2885 break;
2886 case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED:
2887 params.event = QED_IWARP_EVENT_TERMINATE_RECEIVED;
2888 event_cb = true;
2889 break;
2890 default:
2891 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2892 "Unhandled exception received...fw_ret_code=%d\n",
2893 fw_ret_code);
2894 break;
2895 }
2896
2897 if (event_cb) {
2898 params.ep_context = ep;
2899 params.cm_info = &ep->cm_info;
2900 ep->event_cb(ep->cb_context, ¶ms);
2901 }
2902}
2903
2904static void
2905qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn,
2906 struct qed_iwarp_ep *ep, u8 fw_return_code)
2907{
2908 struct qed_iwarp_cm_event_params params;
2909
2910 memset(¶ms, 0, sizeof(params));
2911 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
2912 params.ep_context = ep;
2913 params.cm_info = &ep->cm_info;
2914 ep->state = QED_IWARP_EP_CLOSED;
2915
2916 switch (fw_return_code) {
2917 case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET:
2918 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2919 "%s(0x%x) TCP connect got invalid packet\n",
2920 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2921 params.status = -ECONNRESET;
2922 break;
2923 case IWARP_CONN_ERROR_TCP_CONNECTION_RST:
2924 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2925 "%s(0x%x) TCP Connection Reset\n",
2926 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2927 params.status = -ECONNRESET;
2928 break;
2929 case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT:
2930 DP_NOTICE(p_hwfn, "%s(0x%x) TCP timeout\n",
2931 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2932 params.status = -EBUSY;
2933 break;
2934 case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER:
2935 DP_NOTICE(p_hwfn, "%s(0x%x) MPA not supported VER\n",
2936 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2937 params.status = -ECONNREFUSED;
2938 break;
2939 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
2940 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
2941 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2942 params.status = -ECONNRESET;
2943 break;
2944 default:
2945 DP_ERR(p_hwfn,
2946 "%s(0x%x) Unexpected return code tcp connect: %d\n",
2947 QED_IWARP_CONNECT_MODE_STRING(ep),
2948 ep->tcp_cid, fw_return_code);
2949 params.status = -ECONNRESET;
2950 break;
2951 }
2952
2953 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
2954 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
2955 qed_iwarp_return_ep(p_hwfn, ep);
2956 } else {
2957 ep->event_cb(ep->cb_context, ¶ms);
2958 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2959 list_del(&ep->list_entry);
2960 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2961 }
2962}
2963
2964void
2965qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn,
2966 struct qed_iwarp_ep *ep, u8 fw_return_code)
2967{
2968 u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
2969
2970 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
2971 /* Done with the SYN packet, post back to ll2 rx */
2972 qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle);
2973
2974 ep->syn = NULL;
2975
2976 /* If connect failed - upper layer doesn't know about it */
2977 if (fw_return_code == RDMA_RETURN_OK)
2978 qed_iwarp_mpa_received(p_hwfn, ep);
2979 else
2980 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
2981 fw_return_code);
2982 } else {
2983 if (fw_return_code == RDMA_RETURN_OK)
2984 qed_iwarp_mpa_offload(p_hwfn, ep);
2985 else
2986 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
2987 fw_return_code);
2988 }
2989}
2990
2991static inline bool
2992qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
2993{
2994 if (!ep || (ep->sig != QED_EP_SIG)) {
2995 DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep);
2996 return false;
2997 }
2998
2999 return true;
3000}
3001
3002static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
3003 u8 fw_event_code, u16 echo,
3004 union event_ring_data *data,
3005 u8 fw_return_code)
3006{
3007 struct regpair *fw_handle = &data->rdma_data.async_handle;
3008 struct qed_iwarp_ep *ep = NULL;
3009 u16 cid;
3010
3011 ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi,
3012 fw_handle->lo);
3013
3014 switch (fw_event_code) {
3015 case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE:
3016 /* Async completion after TCP 3-way handshake */
3017 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3018 return -EINVAL;
3019 DP_VERBOSE(p_hwfn,
3020 QED_MSG_RDMA,
3021 "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n",
3022 ep->tcp_cid, fw_return_code);
3023 qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code);
3024 break;
3025 case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED:
3026 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3027 return -EINVAL;
3028 DP_VERBOSE(p_hwfn,
3029 QED_MSG_RDMA,
3030 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n",
3031 ep->cid, fw_return_code);
3032 qed_iwarp_exception_received(p_hwfn, ep, fw_return_code);
3033 break;
3034 case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE:
3035 /* Async completion for Close Connection ramrod */
3036 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3037 return -EINVAL;
3038 DP_VERBOSE(p_hwfn,
3039 QED_MSG_RDMA,
3040 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n",
3041 ep->cid, fw_return_code);
3042 qed_iwarp_qp_in_error(p_hwfn, ep, fw_return_code);
3043 break;
3044 case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED:
3045 /* Async event for active side only */
3046 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3047 return -EINVAL;
3048 DP_VERBOSE(p_hwfn,
3049 QED_MSG_RDMA,
3050 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n",
3051 ep->cid, fw_return_code);
3052 qed_iwarp_mpa_reply_arrived(p_hwfn, ep);
3053 break;
3054 case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE:
3055 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3056 return -EINVAL;
3057 DP_VERBOSE(p_hwfn,
3058 QED_MSG_RDMA,
3059 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n",
3060 ep->cid, fw_return_code);
3061 qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code);
3062 break;
3063 case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED:
3064 cid = (u16)le32_to_cpu(fw_handle->lo);
3065 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
3066 "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid);
3067 qed_iwarp_cid_cleaned(p_hwfn, cid);
3068
3069 break;
3070 case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW:
3071 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n");
3072
3073 p_hwfn->p_rdma_info->events.affiliated_event(
3074 p_hwfn->p_rdma_info->events.context,
3075 QED_IWARP_EVENT_CQ_OVERFLOW,
3076 (void *)fw_handle);
3077 break;
3078 default:
3079 DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n",
3080 fw_event_code);
3081 return -EINVAL;
3082 }
3083 return 0;
3084}
3085
3086int
3087qed_iwarp_create_listen(void *rdma_cxt,
3088 struct qed_iwarp_listen_in *iparams,
3089 struct qed_iwarp_listen_out *oparams)
3090{
3091 struct qed_hwfn *p_hwfn = rdma_cxt;
3092 struct qed_iwarp_listener *listener;
3093
3094 listener = kzalloc(sizeof(*listener), GFP_KERNEL);
3095 if (!listener)
3096 return -ENOMEM;
3097
3098 listener->ip_version = iparams->ip_version;
3099 memcpy(listener->ip_addr, iparams->ip_addr, sizeof(listener->ip_addr));
3100 listener->port = iparams->port;
3101 listener->vlan = iparams->vlan;
3102
3103 listener->event_cb = iparams->event_cb;
3104 listener->cb_context = iparams->cb_context;
3105 listener->max_backlog = iparams->max_backlog;
3106 oparams->handle = listener;
3107
3108 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3109 list_add_tail(&listener->list_entry,
3110 &p_hwfn->p_rdma_info->iwarp.listen_list);
3111 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3112
3113 DP_VERBOSE(p_hwfn,
3114 QED_MSG_RDMA,
3115 "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n",
3116 listener->event_cb,
3117 listener,
3118 listener->ip_addr[0],
3119 listener->ip_addr[1],
3120 listener->ip_addr[2],
3121 listener->ip_addr[3], listener->port, listener->vlan);
3122
3123 return 0;
3124}
3125
3126int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle)
3127{
3128 struct qed_iwarp_listener *listener = handle;
3129 struct qed_hwfn *p_hwfn = rdma_cxt;
3130
3131 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "handle=%p\n", handle);
3132
3133 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3134 list_del(&listener->list_entry);
3135 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3136
3137 kfree(listener);
3138
3139 return 0;
3140}
3141
3142int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams)
3143{
3144 struct qed_hwfn *p_hwfn = rdma_cxt;
3145 struct qed_sp_init_data init_data;
3146 struct qed_spq_entry *p_ent;
3147 struct qed_iwarp_ep *ep;
3148 struct qed_rdma_qp *qp;
3149 int rc;
3150
3151 ep = iparams->ep_context;
3152 if (!ep) {
3153 DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n");
3154 return -EINVAL;
3155 }
3156
3157 qp = ep->qp;
3158
3159 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
3160 qp->icid, ep->tcp_cid);
3161
3162 memset(&init_data, 0, sizeof(init_data));
3163 init_data.cid = qp->icid;
3164 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
3165 init_data.comp_mode = QED_SPQ_MODE_CB;
3166
3167 rc = qed_sp_init_request(p_hwfn, &p_ent,
3168 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR,
3169 PROTOCOLID_IWARP, &init_data);
3170
3171 if (rc)
3172 return rc;
3173
3174 rc = qed_spq_post(p_hwfn, p_ent, NULL);
3175
3176 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc);
3177
3178 return rc;
3179}
3180
3181void
3182qed_iwarp_query_qp(struct qed_rdma_qp *qp,
3183 struct qed_rdma_query_qp_out_params *out_params)
3184{
3185 out_params->state = qed_iwarp2roce_state(qp->iwarp_state);
3186}
1/* QLogic qed NIC Driver
2 * Copyright (c) 2015-2017 QLogic Corporation
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and /or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32#include <linux/if_ether.h>
33#include <linux/if_vlan.h>
34#include <linux/ip.h>
35#include <linux/ipv6.h>
36#include <linux/spinlock.h>
37#include <linux/tcp.h>
38#include "qed_cxt.h"
39#include "qed_hw.h"
40#include "qed_ll2.h"
41#include "qed_rdma.h"
42#include "qed_reg_addr.h"
43#include "qed_sp.h"
44#include "qed_ooo.h"
45
46#define QED_IWARP_ORD_DEFAULT 32
47#define QED_IWARP_IRD_DEFAULT 32
48#define QED_IWARP_MAX_FW_MSS 4120
49
50#define QED_EP_SIG 0xecabcdef
51
52struct mpa_v2_hdr {
53 __be16 ird;
54 __be16 ord;
55};
56
57#define MPA_V2_PEER2PEER_MODEL 0x8000
58#define MPA_V2_SEND_RTR 0x4000 /* on ird */
59#define MPA_V2_READ_RTR 0x4000 /* on ord */
60#define MPA_V2_WRITE_RTR 0x8000
61#define MPA_V2_IRD_ORD_MASK 0x3FFF
62
63#define MPA_REV2(_mpa_rev) ((_mpa_rev) == MPA_NEGOTIATION_TYPE_ENHANCED)
64
65#define QED_IWARP_INVALID_TCP_CID 0xffffffff
66
67#define QED_IWARP_RCV_WND_SIZE_DEF_BB_2P (200 * 1024)
68#define QED_IWARP_RCV_WND_SIZE_DEF_BB_4P (100 * 1024)
69#define QED_IWARP_RCV_WND_SIZE_DEF_AH_2P (150 * 1024)
70#define QED_IWARP_RCV_WND_SIZE_DEF_AH_4P (90 * 1024)
71
72#define QED_IWARP_RCV_WND_SIZE_MIN (0xffff)
73#define TIMESTAMP_HEADER_SIZE (12)
74#define QED_IWARP_MAX_FIN_RT_DEFAULT (2)
75
76#define QED_IWARP_TS_EN BIT(0)
77#define QED_IWARP_DA_EN BIT(1)
78#define QED_IWARP_PARAM_CRC_NEEDED (1)
79#define QED_IWARP_PARAM_P2P (1)
80
81#define QED_IWARP_DEF_MAX_RT_TIME (0)
82#define QED_IWARP_DEF_CWND_FACTOR (4)
83#define QED_IWARP_DEF_KA_MAX_PROBE_CNT (5)
84#define QED_IWARP_DEF_KA_TIMEOUT (1200000) /* 20 min */
85#define QED_IWARP_DEF_KA_INTERVAL (1000) /* 1 sec */
86
87static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
88 u8 fw_event_code, u16 echo,
89 union event_ring_data *data,
90 u8 fw_return_code);
91
92/* Override devinfo with iWARP specific values */
93void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn)
94{
95 struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;
96
97 dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE;
98 dev->max_qp = min_t(u32,
99 IWARP_MAX_QPS,
100 p_hwfn->p_rdma_info->num_qps) -
101 QED_IWARP_PREALLOC_CNT;
102
103 dev->max_cq = dev->max_qp;
104
105 dev->max_qp_resp_rd_atomic_resc = QED_IWARP_IRD_DEFAULT;
106 dev->max_qp_req_rd_atomic_resc = QED_IWARP_ORD_DEFAULT;
107}
108
109void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
110{
111 p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP;
112 qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1);
113 p_hwfn->b_rdma_enabled_in_prs = true;
114}
115
116/* We have two cid maps, one for tcp which should be used only from passive
117 * syn processing and replacing a pre-allocated ep in the list. The second
118 * for active tcp and for QPs.
119 */
120static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid)
121{
122 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
123
124 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
125
126 if (cid < QED_IWARP_PREALLOC_CNT)
127 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
128 cid);
129 else
130 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
131
132 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
133}
134
135void
136qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
137 struct iwarp_init_func_ramrod_data *p_ramrod)
138{
139 p_ramrod->iwarp.ll2_ooo_q_index =
140 RESC_START(p_hwfn, QED_LL2_QUEUE) +
141 p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle;
142
143 p_ramrod->tcp.max_fin_rt = QED_IWARP_MAX_FIN_RT_DEFAULT;
144
145 return;
146}
147
148static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid)
149{
150 int rc;
151
152 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
153 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
154 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
155 if (rc) {
156 DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n");
157 return rc;
158 }
159 *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
160
161 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid);
162 if (rc)
163 qed_iwarp_cid_cleaned(p_hwfn, *cid);
164
165 return rc;
166}
167
168static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid)
169{
170 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
171
172 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
173 qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid);
174 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
175}
176
177/* This function allocates a cid for passive tcp (called from syn receive)
178 * the reason it's separate from the regular cid allocation is because it
179 * is assured that these cids already have ilt allocated. They are preallocated
180 * to ensure that we won't need to allocate memory during syn processing
181 */
182static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid)
183{
184 int rc;
185
186 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
187
188 rc = qed_rdma_bmap_alloc_id(p_hwfn,
189 &p_hwfn->p_rdma_info->tcp_cid_map, cid);
190
191 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
192
193 if (rc) {
194 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
195 "can't allocate iwarp tcp cid max-count=%d\n",
196 p_hwfn->p_rdma_info->tcp_cid_map.max_count);
197
198 *cid = QED_IWARP_INVALID_TCP_CID;
199 return rc;
200 }
201
202 *cid += qed_cxt_get_proto_cid_start(p_hwfn,
203 p_hwfn->p_rdma_info->proto);
204 return 0;
205}
206
207int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
208 struct qed_rdma_qp *qp,
209 struct qed_rdma_create_qp_out_params *out_params)
210{
211 struct iwarp_create_qp_ramrod_data *p_ramrod;
212 struct qed_sp_init_data init_data;
213 struct qed_spq_entry *p_ent;
214 u16 physical_queue;
215 u32 cid;
216 int rc;
217
218 qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
219 IWARP_SHARED_QUEUE_PAGE_SIZE,
220 &qp->shared_queue_phys_addr,
221 GFP_KERNEL);
222 if (!qp->shared_queue)
223 return -ENOMEM;
224
225 out_params->sq_pbl_virt = (u8 *)qp->shared_queue +
226 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
227 out_params->sq_pbl_phys = qp->shared_queue_phys_addr +
228 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
229 out_params->rq_pbl_virt = (u8 *)qp->shared_queue +
230 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
231 out_params->rq_pbl_phys = qp->shared_queue_phys_addr +
232 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
233
234 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
235 if (rc)
236 goto err1;
237
238 qp->icid = (u16)cid;
239
240 memset(&init_data, 0, sizeof(init_data));
241 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
242 init_data.cid = qp->icid;
243 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
244
245 rc = qed_sp_init_request(p_hwfn, &p_ent,
246 IWARP_RAMROD_CMD_ID_CREATE_QP,
247 PROTOCOLID_IWARP, &init_data);
248 if (rc)
249 goto err2;
250
251 p_ramrod = &p_ent->ramrod.iwarp_create_qp;
252
253 SET_FIELD(p_ramrod->flags,
254 IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN,
255 qp->fmr_and_reserved_lkey);
256
257 SET_FIELD(p_ramrod->flags,
258 IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all);
259
260 SET_FIELD(p_ramrod->flags,
261 IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN,
262 qp->incoming_rdma_read_en);
263
264 SET_FIELD(p_ramrod->flags,
265 IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN,
266 qp->incoming_rdma_write_en);
267
268 SET_FIELD(p_ramrod->flags,
269 IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN,
270 qp->incoming_atomic_en);
271
272 SET_FIELD(p_ramrod->flags,
273 IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq);
274
275 p_ramrod->pd = qp->pd;
276 p_ramrod->sq_num_pages = qp->sq_num_pages;
277 p_ramrod->rq_num_pages = qp->rq_num_pages;
278
279 p_ramrod->srq_id.srq_idx = cpu_to_le16(qp->srq_id);
280 p_ramrod->srq_id.opaque_fid = cpu_to_le16(p_hwfn->hw_info.opaque_fid);
281 p_ramrod->qp_handle_for_cqe.hi = cpu_to_le32(qp->qp_handle.hi);
282 p_ramrod->qp_handle_for_cqe.lo = cpu_to_le32(qp->qp_handle.lo);
283
284 p_ramrod->cq_cid_for_sq =
285 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id);
286 p_ramrod->cq_cid_for_rq =
287 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id);
288
289 p_ramrod->dpi = cpu_to_le16(qp->dpi);
290
291 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
292 p_ramrod->physical_q0 = cpu_to_le16(physical_queue);
293 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
294 p_ramrod->physical_q1 = cpu_to_le16(physical_queue);
295
296 rc = qed_spq_post(p_hwfn, p_ent, NULL);
297 if (rc)
298 goto err2;
299
300 return rc;
301
302err2:
303 qed_iwarp_cid_cleaned(p_hwfn, cid);
304err1:
305 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
306 IWARP_SHARED_QUEUE_PAGE_SIZE,
307 qp->shared_queue, qp->shared_queue_phys_addr);
308
309 return rc;
310}
311
312static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
313{
314 struct iwarp_modify_qp_ramrod_data *p_ramrod;
315 struct qed_sp_init_data init_data;
316 struct qed_spq_entry *p_ent;
317 int rc;
318
319 /* Get SPQ entry */
320 memset(&init_data, 0, sizeof(init_data));
321 init_data.cid = qp->icid;
322 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
323 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
324
325 rc = qed_sp_init_request(p_hwfn, &p_ent,
326 IWARP_RAMROD_CMD_ID_MODIFY_QP,
327 p_hwfn->p_rdma_info->proto, &init_data);
328 if (rc)
329 return rc;
330
331 p_ramrod = &p_ent->ramrod.iwarp_modify_qp;
332 SET_FIELD(p_ramrod->flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN,
333 0x1);
334 if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING)
335 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_CLOSING;
336 else
337 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_ERROR;
338
339 rc = qed_spq_post(p_hwfn, p_ent, NULL);
340
341 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc);
342
343 return rc;
344}
345
346enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state)
347{
348 switch (state) {
349 case QED_ROCE_QP_STATE_RESET:
350 case QED_ROCE_QP_STATE_INIT:
351 case QED_ROCE_QP_STATE_RTR:
352 return QED_IWARP_QP_STATE_IDLE;
353 case QED_ROCE_QP_STATE_RTS:
354 return QED_IWARP_QP_STATE_RTS;
355 case QED_ROCE_QP_STATE_SQD:
356 return QED_IWARP_QP_STATE_CLOSING;
357 case QED_ROCE_QP_STATE_ERR:
358 return QED_IWARP_QP_STATE_ERROR;
359 case QED_ROCE_QP_STATE_SQE:
360 return QED_IWARP_QP_STATE_TERMINATE;
361 default:
362 return QED_IWARP_QP_STATE_ERROR;
363 }
364}
365
366static enum qed_roce_qp_state
367qed_iwarp2roce_state(enum qed_iwarp_qp_state state)
368{
369 switch (state) {
370 case QED_IWARP_QP_STATE_IDLE:
371 return QED_ROCE_QP_STATE_INIT;
372 case QED_IWARP_QP_STATE_RTS:
373 return QED_ROCE_QP_STATE_RTS;
374 case QED_IWARP_QP_STATE_TERMINATE:
375 return QED_ROCE_QP_STATE_SQE;
376 case QED_IWARP_QP_STATE_CLOSING:
377 return QED_ROCE_QP_STATE_SQD;
378 case QED_IWARP_QP_STATE_ERROR:
379 return QED_ROCE_QP_STATE_ERR;
380 default:
381 return QED_ROCE_QP_STATE_ERR;
382 }
383}
384
385static const char * const iwarp_state_names[] = {
386 "IDLE",
387 "RTS",
388 "TERMINATE",
389 "CLOSING",
390 "ERROR",
391};
392
393int
394qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn,
395 struct qed_rdma_qp *qp,
396 enum qed_iwarp_qp_state new_state, bool internal)
397{
398 enum qed_iwarp_qp_state prev_iw_state;
399 bool modify_fw = false;
400 int rc = 0;
401
402 /* modify QP can be called from upper-layer or as a result of async
403 * RST/FIN... therefore need to protect
404 */
405 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
406 prev_iw_state = qp->iwarp_state;
407
408 if (prev_iw_state == new_state) {
409 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
410 return 0;
411 }
412
413 switch (prev_iw_state) {
414 case QED_IWARP_QP_STATE_IDLE:
415 switch (new_state) {
416 case QED_IWARP_QP_STATE_RTS:
417 qp->iwarp_state = QED_IWARP_QP_STATE_RTS;
418 break;
419 case QED_IWARP_QP_STATE_ERROR:
420 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
421 if (!internal)
422 modify_fw = true;
423 break;
424 default:
425 break;
426 }
427 break;
428 case QED_IWARP_QP_STATE_RTS:
429 switch (new_state) {
430 case QED_IWARP_QP_STATE_CLOSING:
431 if (!internal)
432 modify_fw = true;
433
434 qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING;
435 break;
436 case QED_IWARP_QP_STATE_ERROR:
437 if (!internal)
438 modify_fw = true;
439 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
440 break;
441 default:
442 break;
443 }
444 break;
445 case QED_IWARP_QP_STATE_ERROR:
446 switch (new_state) {
447 case QED_IWARP_QP_STATE_IDLE:
448
449 qp->iwarp_state = new_state;
450 break;
451 case QED_IWARP_QP_STATE_CLOSING:
452 /* could happen due to race... do nothing.... */
453 break;
454 default:
455 rc = -EINVAL;
456 }
457 break;
458 case QED_IWARP_QP_STATE_TERMINATE:
459 case QED_IWARP_QP_STATE_CLOSING:
460 qp->iwarp_state = new_state;
461 break;
462 default:
463 break;
464 }
465
466 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n",
467 qp->icid,
468 iwarp_state_names[prev_iw_state],
469 iwarp_state_names[qp->iwarp_state],
470 internal ? "internal" : "");
471
472 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
473
474 if (modify_fw)
475 rc = qed_iwarp_modify_fw(p_hwfn, qp);
476
477 return rc;
478}
479
480int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
481{
482 struct qed_sp_init_data init_data;
483 struct qed_spq_entry *p_ent;
484 int rc;
485
486 /* Get SPQ entry */
487 memset(&init_data, 0, sizeof(init_data));
488 init_data.cid = qp->icid;
489 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
490 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
491
492 rc = qed_sp_init_request(p_hwfn, &p_ent,
493 IWARP_RAMROD_CMD_ID_DESTROY_QP,
494 p_hwfn->p_rdma_info->proto, &init_data);
495 if (rc)
496 return rc;
497
498 rc = qed_spq_post(p_hwfn, p_ent, NULL);
499
500 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc);
501
502 return rc;
503}
504
505static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn,
506 struct qed_iwarp_ep *ep,
507 bool remove_from_active_list)
508{
509 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
510 sizeof(*ep->ep_buffer_virt),
511 ep->ep_buffer_virt, ep->ep_buffer_phys);
512
513 if (remove_from_active_list) {
514 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
515 list_del(&ep->list_entry);
516 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
517 }
518
519 if (ep->qp)
520 ep->qp->ep = NULL;
521
522 kfree(ep);
523}
524
525int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
526{
527 struct qed_iwarp_ep *ep = qp->ep;
528 int wait_count = 0;
529 int rc = 0;
530
531 if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) {
532 rc = qed_iwarp_modify_qp(p_hwfn, qp,
533 QED_IWARP_QP_STATE_ERROR, false);
534 if (rc)
535 return rc;
536 }
537
538 /* Make sure ep is closed before returning and freeing memory. */
539 if (ep) {
540 while (READ_ONCE(ep->state) != QED_IWARP_EP_CLOSED &&
541 wait_count++ < 200)
542 msleep(100);
543
544 if (ep->state != QED_IWARP_EP_CLOSED)
545 DP_NOTICE(p_hwfn, "ep state close timeout state=%x\n",
546 ep->state);
547
548 qed_iwarp_destroy_ep(p_hwfn, ep, false);
549 }
550
551 rc = qed_iwarp_fw_destroy(p_hwfn, qp);
552
553 if (qp->shared_queue)
554 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
555 IWARP_SHARED_QUEUE_PAGE_SIZE,
556 qp->shared_queue, qp->shared_queue_phys_addr);
557
558 return rc;
559}
560
561static int
562qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out)
563{
564 struct qed_iwarp_ep *ep;
565 int rc;
566
567 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
568 if (!ep)
569 return -ENOMEM;
570
571 ep->state = QED_IWARP_EP_INIT;
572
573 ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
574 sizeof(*ep->ep_buffer_virt),
575 &ep->ep_buffer_phys,
576 GFP_KERNEL);
577 if (!ep->ep_buffer_virt) {
578 rc = -ENOMEM;
579 goto err;
580 }
581
582 ep->sig = QED_EP_SIG;
583
584 *ep_out = ep;
585
586 return 0;
587
588err:
589 kfree(ep);
590 return rc;
591}
592
593static void
594qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn,
595 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod)
596{
597 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n",
598 p_tcp_ramrod->tcp.local_mac_addr_lo,
599 p_tcp_ramrod->tcp.local_mac_addr_mid,
600 p_tcp_ramrod->tcp.local_mac_addr_hi,
601 p_tcp_ramrod->tcp.remote_mac_addr_lo,
602 p_tcp_ramrod->tcp.remote_mac_addr_mid,
603 p_tcp_ramrod->tcp.remote_mac_addr_hi);
604
605 if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) {
606 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
607 "local_ip=%pI4h:%x, remote_ip=%pI4h:%x, vlan=%x\n",
608 p_tcp_ramrod->tcp.local_ip,
609 p_tcp_ramrod->tcp.local_port,
610 p_tcp_ramrod->tcp.remote_ip,
611 p_tcp_ramrod->tcp.remote_port,
612 p_tcp_ramrod->tcp.vlan_id);
613 } else {
614 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
615 "local_ip=%pI6:%x, remote_ip=%pI6:%x, vlan=%x\n",
616 p_tcp_ramrod->tcp.local_ip,
617 p_tcp_ramrod->tcp.local_port,
618 p_tcp_ramrod->tcp.remote_ip,
619 p_tcp_ramrod->tcp.remote_port,
620 p_tcp_ramrod->tcp.vlan_id);
621 }
622
623 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
624 "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n",
625 p_tcp_ramrod->tcp.flow_label,
626 p_tcp_ramrod->tcp.ttl,
627 p_tcp_ramrod->tcp.tos_or_tc,
628 p_tcp_ramrod->tcp.mss,
629 p_tcp_ramrod->tcp.rcv_wnd_scale,
630 p_tcp_ramrod->tcp.connect_mode,
631 p_tcp_ramrod->tcp.flags);
632
633 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n",
634 p_tcp_ramrod->tcp.syn_ip_payload_length,
635 p_tcp_ramrod->tcp.syn_phy_addr_lo,
636 p_tcp_ramrod->tcp.syn_phy_addr_hi);
637}
638
639static int
640qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
641{
642 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
643 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod;
644 struct tcp_offload_params_opt2 *tcp;
645 struct qed_sp_init_data init_data;
646 struct qed_spq_entry *p_ent;
647 dma_addr_t async_output_phys;
648 dma_addr_t in_pdata_phys;
649 u16 physical_q;
650 u8 tcp_flags;
651 int rc;
652 int i;
653
654 memset(&init_data, 0, sizeof(init_data));
655 init_data.cid = ep->tcp_cid;
656 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
657 if (ep->connect_mode == TCP_CONNECT_PASSIVE)
658 init_data.comp_mode = QED_SPQ_MODE_CB;
659 else
660 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
661
662 rc = qed_sp_init_request(p_hwfn, &p_ent,
663 IWARP_RAMROD_CMD_ID_TCP_OFFLOAD,
664 PROTOCOLID_IWARP, &init_data);
665 if (rc)
666 return rc;
667
668 p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload;
669
670 in_pdata_phys = ep->ep_buffer_phys +
671 offsetof(struct qed_iwarp_ep_memory, in_pdata);
672 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr,
673 in_pdata_phys);
674
675 p_tcp_ramrod->iwarp.incoming_ulp_buffer.len =
676 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
677
678 async_output_phys = ep->ep_buffer_phys +
679 offsetof(struct qed_iwarp_ep_memory, async_output);
680 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf,
681 async_output_phys);
682
683 p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
684 p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
685
686 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
687 p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q);
688 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
689 p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q);
690 p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev;
691
692 tcp = &p_tcp_ramrod->tcp;
693 qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi,
694 &tcp->remote_mac_addr_mid,
695 &tcp->remote_mac_addr_lo, ep->remote_mac_addr);
696 qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid,
697 &tcp->local_mac_addr_lo, ep->local_mac_addr);
698
699 tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan);
700
701 tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags;
702 tcp->flags = 0;
703 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN,
704 !!(tcp_flags & QED_IWARP_TS_EN));
705
706 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN,
707 !!(tcp_flags & QED_IWARP_DA_EN));
708
709 tcp->ip_version = ep->cm_info.ip_version;
710
711 for (i = 0; i < 4; i++) {
712 tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]);
713 tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]);
714 }
715
716 tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port);
717 tcp->local_port = cpu_to_le16(ep->cm_info.local_port);
718 tcp->mss = cpu_to_le16(ep->mss);
719 tcp->flow_label = 0;
720 tcp->ttl = 0x40;
721 tcp->tos_or_tc = 0;
722
723 tcp->max_rt_time = QED_IWARP_DEF_MAX_RT_TIME;
724 tcp->cwnd = QED_IWARP_DEF_CWND_FACTOR * tcp->mss;
725 tcp->ka_max_probe_cnt = QED_IWARP_DEF_KA_MAX_PROBE_CNT;
726 tcp->ka_timeout = QED_IWARP_DEF_KA_TIMEOUT;
727 tcp->ka_interval = QED_IWARP_DEF_KA_INTERVAL;
728
729 tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale;
730 tcp->connect_mode = ep->connect_mode;
731
732 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
733 tcp->syn_ip_payload_length =
734 cpu_to_le16(ep->syn_ip_payload_length);
735 tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr);
736 tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr);
737 }
738
739 qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod);
740
741 rc = qed_spq_post(p_hwfn, p_ent, NULL);
742
743 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
744 "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc);
745
746 return rc;
747}
748
749static void
750qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
751{
752 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
753 struct qed_iwarp_cm_event_params params;
754 struct mpa_v2_hdr *mpa_v2;
755 union async_output *async_data;
756 u16 mpa_ord, mpa_ird;
757 u8 mpa_hdr_size = 0;
758 u8 mpa_rev;
759
760 async_data = &ep->ep_buffer_virt->async_output;
761
762 mpa_rev = async_data->mpa_request.mpa_handshake_mode;
763 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
764 "private_data_len=%x handshake_mode=%x private_data=(%x)\n",
765 async_data->mpa_request.ulp_data_len,
766 mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata)));
767
768 if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
769 /* Read ord/ird values from private data buffer */
770 mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata;
771 mpa_hdr_size = sizeof(*mpa_v2);
772
773 mpa_ord = ntohs(mpa_v2->ord);
774 mpa_ird = ntohs(mpa_v2->ird);
775
776 /* Temprary store in cm_info incoming ord/ird requested, later
777 * replace with negotiated value during accept
778 */
779 ep->cm_info.ord = (u8)min_t(u16,
780 (mpa_ord & MPA_V2_IRD_ORD_MASK),
781 QED_IWARP_ORD_DEFAULT);
782
783 ep->cm_info.ird = (u8)min_t(u16,
784 (mpa_ird & MPA_V2_IRD_ORD_MASK),
785 QED_IWARP_IRD_DEFAULT);
786
787 /* Peer2Peer negotiation */
788 ep->rtr_type = MPA_RTR_TYPE_NONE;
789 if (mpa_ird & MPA_V2_PEER2PEER_MODEL) {
790 if (mpa_ord & MPA_V2_WRITE_RTR)
791 ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE;
792
793 if (mpa_ord & MPA_V2_READ_RTR)
794 ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ;
795
796 if (mpa_ird & MPA_V2_SEND_RTR)
797 ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND;
798
799 ep->rtr_type &= iwarp_info->rtr_type;
800
801 /* if we're left with no match send our capabilities */
802 if (ep->rtr_type == MPA_RTR_TYPE_NONE)
803 ep->rtr_type = iwarp_info->rtr_type;
804 }
805
806 ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
807 } else {
808 ep->cm_info.ord = QED_IWARP_ORD_DEFAULT;
809 ep->cm_info.ird = QED_IWARP_IRD_DEFAULT;
810 ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC;
811 }
812
813 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
814 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n",
815 mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type,
816 async_data->mpa_request.ulp_data_len, mpa_hdr_size);
817
818 /* Strip mpa v2 hdr from private data before sending to upper layer */
819 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size;
820
821 ep->cm_info.private_data_len = async_data->mpa_request.ulp_data_len -
822 mpa_hdr_size;
823
824 params.event = QED_IWARP_EVENT_MPA_REQUEST;
825 params.cm_info = &ep->cm_info;
826 params.ep_context = ep;
827 params.status = 0;
828
829 ep->state = QED_IWARP_EP_MPA_REQ_RCVD;
830 ep->event_cb(ep->cb_context, ¶ms);
831}
832
833static int
834qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
835{
836 struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod;
837 struct qed_iwarp_info *iwarp_info;
838 struct qed_sp_init_data init_data;
839 dma_addr_t async_output_phys;
840 struct qed_spq_entry *p_ent;
841 dma_addr_t out_pdata_phys;
842 dma_addr_t in_pdata_phys;
843 struct qed_rdma_qp *qp;
844 bool reject;
845 int rc;
846
847 if (!ep)
848 return -EINVAL;
849
850 qp = ep->qp;
851 reject = !qp;
852
853 memset(&init_data, 0, sizeof(init_data));
854 init_data.cid = reject ? ep->tcp_cid : qp->icid;
855 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
856
857 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
858 init_data.comp_mode = QED_SPQ_MODE_CB;
859 else
860 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
861
862 rc = qed_sp_init_request(p_hwfn, &p_ent,
863 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD,
864 PROTOCOLID_IWARP, &init_data);
865 if (rc)
866 return rc;
867
868 p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload;
869 out_pdata_phys = ep->ep_buffer_phys +
870 offsetof(struct qed_iwarp_ep_memory, out_pdata);
871 DMA_REGPAIR_LE(p_mpa_ramrod->common.outgoing_ulp_buffer.addr,
872 out_pdata_phys);
873 p_mpa_ramrod->common.outgoing_ulp_buffer.len =
874 ep->cm_info.private_data_len;
875 p_mpa_ramrod->common.crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed;
876
877 p_mpa_ramrod->common.out_rq.ord = ep->cm_info.ord;
878 p_mpa_ramrod->common.out_rq.ird = ep->cm_info.ird;
879
880 p_mpa_ramrod->tcp_cid = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid;
881
882 in_pdata_phys = ep->ep_buffer_phys +
883 offsetof(struct qed_iwarp_ep_memory, in_pdata);
884 p_mpa_ramrod->tcp_connect_side = ep->connect_mode;
885 DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr,
886 in_pdata_phys);
887 p_mpa_ramrod->incoming_ulp_buffer.len =
888 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
889 async_output_phys = ep->ep_buffer_phys +
890 offsetof(struct qed_iwarp_ep_memory, async_output);
891 DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf,
892 async_output_phys);
893 p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
894 p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
895
896 if (!reject) {
897 DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr,
898 qp->shared_queue_phys_addr);
899 p_mpa_ramrod->stats_counter_id =
900 RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue;
901 } else {
902 p_mpa_ramrod->common.reject = 1;
903 }
904
905 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
906 p_mpa_ramrod->rcv_wnd = iwarp_info->rcv_wnd_size;
907 p_mpa_ramrod->mode = ep->mpa_rev;
908 SET_FIELD(p_mpa_ramrod->rtr_pref,
909 IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type);
910
911 ep->state = QED_IWARP_EP_MPA_OFFLOADED;
912 rc = qed_spq_post(p_hwfn, p_ent, NULL);
913 if (!reject)
914 ep->cid = qp->icid; /* Now they're migrated. */
915
916 DP_VERBOSE(p_hwfn,
917 QED_MSG_RDMA,
918 "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",
919 reject ? 0xffff : qp->icid,
920 ep->tcp_cid,
921 rc,
922 ep->cm_info.ird,
923 ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject);
924 return rc;
925}
926
927static void
928qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
929{
930 ep->state = QED_IWARP_EP_INIT;
931 if (ep->qp)
932 ep->qp->ep = NULL;
933 ep->qp = NULL;
934 memset(&ep->cm_info, 0, sizeof(ep->cm_info));
935
936 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
937 /* We don't care about the return code, it's ok if tcp_cid
938 * remains invalid...in this case we'll defer allocation
939 */
940 qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
941 }
942 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
943
944 list_move_tail(&ep->list_entry,
945 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
946
947 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
948}
949
950static void
951qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
952{
953 struct mpa_v2_hdr *mpa_v2_params;
954 union async_output *async_data;
955 u16 mpa_ird, mpa_ord;
956 u8 mpa_data_size = 0;
957
958 if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) {
959 mpa_v2_params =
960 (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata);
961 mpa_data_size = sizeof(*mpa_v2_params);
962 mpa_ird = ntohs(mpa_v2_params->ird);
963 mpa_ord = ntohs(mpa_v2_params->ord);
964
965 ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK);
966 ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK);
967 }
968 async_data = &ep->ep_buffer_virt->async_output;
969
970 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size;
971 ep->cm_info.private_data_len = async_data->mpa_response.ulp_data_len -
972 mpa_data_size;
973}
974
975static void
976qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
977{
978 struct qed_iwarp_cm_event_params params;
979
980 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
981 DP_NOTICE(p_hwfn,
982 "MPA reply event not expected on passive side!\n");
983 return;
984 }
985
986 params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY;
987
988 qed_iwarp_parse_private_data(p_hwfn, ep);
989
990 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
991 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
992 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
993
994 params.cm_info = &ep->cm_info;
995 params.ep_context = ep;
996 params.status = 0;
997
998 ep->mpa_reply_processed = true;
999
1000 ep->event_cb(ep->cb_context, ¶ms);
1001}
1002
1003#define QED_IWARP_CONNECT_MODE_STRING(ep) \
1004 ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active"
1005
1006/* Called as a result of the event:
1007 * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE
1008 */
1009static void
1010qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn,
1011 struct qed_iwarp_ep *ep, u8 fw_return_code)
1012{
1013 struct qed_iwarp_cm_event_params params;
1014
1015 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
1016 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
1017 else
1018 params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE;
1019
1020 if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed)
1021 qed_iwarp_parse_private_data(p_hwfn, ep);
1022
1023 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1024 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
1025 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
1026
1027 params.cm_info = &ep->cm_info;
1028
1029 params.ep_context = ep;
1030
1031 switch (fw_return_code) {
1032 case RDMA_RETURN_OK:
1033 ep->qp->max_rd_atomic_req = ep->cm_info.ord;
1034 ep->qp->max_rd_atomic_resp = ep->cm_info.ird;
1035 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1);
1036 ep->state = QED_IWARP_EP_ESTABLISHED;
1037 params.status = 0;
1038 break;
1039 case IWARP_CONN_ERROR_MPA_TIMEOUT:
1040 DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n",
1041 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1042 params.status = -EBUSY;
1043 break;
1044 case IWARP_CONN_ERROR_MPA_ERROR_REJECT:
1045 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n",
1046 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1047 params.status = -ECONNREFUSED;
1048 break;
1049 case IWARP_CONN_ERROR_MPA_RST:
1050 DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n",
1051 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid,
1052 ep->tcp_cid);
1053 params.status = -ECONNRESET;
1054 break;
1055 case IWARP_CONN_ERROR_MPA_FIN:
1056 DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n",
1057 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1058 params.status = -ECONNREFUSED;
1059 break;
1060 case IWARP_CONN_ERROR_MPA_INSUF_IRD:
1061 DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n",
1062 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1063 params.status = -ECONNREFUSED;
1064 break;
1065 case IWARP_CONN_ERROR_MPA_RTR_MISMATCH:
1066 DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n",
1067 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1068 params.status = -ECONNREFUSED;
1069 break;
1070 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
1071 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
1072 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1073 params.status = -ECONNREFUSED;
1074 break;
1075 case IWARP_CONN_ERROR_MPA_LOCAL_ERROR:
1076 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n",
1077 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1078 params.status = -ECONNREFUSED;
1079 break;
1080 case IWARP_CONN_ERROR_MPA_TERMINATE:
1081 DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n",
1082 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1083 params.status = -ECONNREFUSED;
1084 break;
1085 default:
1086 params.status = -ECONNRESET;
1087 break;
1088 }
1089
1090 if (fw_return_code != RDMA_RETURN_OK)
1091 /* paired with READ_ONCE in destroy_qp */
1092 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
1093
1094 ep->event_cb(ep->cb_context, ¶ms);
1095
1096 /* on passive side, if there is no associated QP (REJECT) we need to
1097 * return the ep to the pool, (in the regular case we add an element
1098 * in accept instead of this one.
1099 * In both cases we need to remove it from the ep_list.
1100 */
1101 if (fw_return_code != RDMA_RETURN_OK) {
1102 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1103 if ((ep->connect_mode == TCP_CONNECT_PASSIVE) &&
1104 (!ep->qp)) { /* Rejected */
1105 qed_iwarp_return_ep(p_hwfn, ep);
1106 } else {
1107 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1108 list_del(&ep->list_entry);
1109 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1110 }
1111 }
1112}
1113
1114static void
1115qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn,
1116 struct qed_iwarp_ep *ep, u8 *mpa_data_size)
1117{
1118 struct mpa_v2_hdr *mpa_v2_params;
1119 u16 mpa_ird, mpa_ord;
1120
1121 *mpa_data_size = 0;
1122 if (MPA_REV2(ep->mpa_rev)) {
1123 mpa_v2_params =
1124 (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata;
1125 *mpa_data_size = sizeof(*mpa_v2_params);
1126
1127 mpa_ird = (u16)ep->cm_info.ird;
1128 mpa_ord = (u16)ep->cm_info.ord;
1129
1130 if (ep->rtr_type != MPA_RTR_TYPE_NONE) {
1131 mpa_ird |= MPA_V2_PEER2PEER_MODEL;
1132
1133 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND)
1134 mpa_ird |= MPA_V2_SEND_RTR;
1135
1136 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE)
1137 mpa_ord |= MPA_V2_WRITE_RTR;
1138
1139 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ)
1140 mpa_ord |= MPA_V2_READ_RTR;
1141 }
1142
1143 mpa_v2_params->ird = htons(mpa_ird);
1144 mpa_v2_params->ord = htons(mpa_ord);
1145
1146 DP_VERBOSE(p_hwfn,
1147 QED_MSG_RDMA,
1148 "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n",
1149 mpa_v2_params->ird,
1150 mpa_v2_params->ord,
1151 *((u32 *)mpa_v2_params),
1152 mpa_ord & MPA_V2_IRD_ORD_MASK,
1153 mpa_ird & MPA_V2_IRD_ORD_MASK,
1154 !!(mpa_ird & MPA_V2_PEER2PEER_MODEL),
1155 !!(mpa_ird & MPA_V2_SEND_RTR),
1156 !!(mpa_ord & MPA_V2_WRITE_RTR),
1157 !!(mpa_ord & MPA_V2_READ_RTR));
1158 }
1159}
1160
1161int qed_iwarp_connect(void *rdma_cxt,
1162 struct qed_iwarp_connect_in *iparams,
1163 struct qed_iwarp_connect_out *oparams)
1164{
1165 struct qed_hwfn *p_hwfn = rdma_cxt;
1166 struct qed_iwarp_info *iwarp_info;
1167 struct qed_iwarp_ep *ep;
1168 u8 mpa_data_size = 0;
1169 u32 cid;
1170 int rc;
1171
1172 if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) ||
1173 (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) {
1174 DP_NOTICE(p_hwfn,
1175 "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1176 iparams->qp->icid, iparams->cm_info.ord,
1177 iparams->cm_info.ird);
1178
1179 return -EINVAL;
1180 }
1181
1182 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1183
1184 /* Allocate ep object */
1185 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1186 if (rc)
1187 return rc;
1188
1189 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1190 if (rc)
1191 goto err;
1192
1193 ep->tcp_cid = cid;
1194
1195 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1196 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
1197 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1198
1199 ep->qp = iparams->qp;
1200 ep->qp->ep = ep;
1201 ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr);
1202 ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr);
1203 memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info));
1204
1205 ep->cm_info.ord = iparams->cm_info.ord;
1206 ep->cm_info.ird = iparams->cm_info.ird;
1207
1208 ep->rtr_type = iwarp_info->rtr_type;
1209 if (!iwarp_info->peer2peer)
1210 ep->rtr_type = MPA_RTR_TYPE_NONE;
1211
1212 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0))
1213 ep->cm_info.ord = 1;
1214
1215 ep->mpa_rev = iwarp_info->mpa_rev;
1216
1217 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1218
1219 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1220 ep->cm_info.private_data_len = iparams->cm_info.private_data_len +
1221 mpa_data_size;
1222
1223 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1224 iparams->cm_info.private_data,
1225 iparams->cm_info.private_data_len);
1226
1227 ep->mss = iparams->mss;
1228 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
1229
1230 ep->event_cb = iparams->event_cb;
1231 ep->cb_context = iparams->cb_context;
1232 ep->connect_mode = TCP_CONNECT_ACTIVE;
1233
1234 oparams->ep_context = ep;
1235
1236 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
1237
1238 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n",
1239 iparams->qp->icid, ep->tcp_cid, rc);
1240
1241 if (rc) {
1242 qed_iwarp_destroy_ep(p_hwfn, ep, true);
1243 goto err;
1244 }
1245
1246 return rc;
1247err:
1248 qed_iwarp_cid_cleaned(p_hwfn, cid);
1249
1250 return rc;
1251}
1252
1253static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn)
1254{
1255 struct qed_iwarp_ep *ep = NULL;
1256 int rc;
1257
1258 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1259
1260 if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1261 DP_ERR(p_hwfn, "Ep list is empty\n");
1262 goto out;
1263 }
1264
1265 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1266 struct qed_iwarp_ep, list_entry);
1267
1268 /* in some cases we could have failed allocating a tcp cid when added
1269 * from accept / failure... retry now..this is not the common case.
1270 */
1271 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
1272 rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
1273
1274 /* if we fail we could look for another entry with a valid
1275 * tcp_cid, but since we don't expect to reach this anyway
1276 * it's not worth the handling
1277 */
1278 if (rc) {
1279 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1280 ep = NULL;
1281 goto out;
1282 }
1283 }
1284
1285 list_del(&ep->list_entry);
1286
1287out:
1288 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1289 return ep;
1290}
1291
1292#define QED_IWARP_MAX_CID_CLEAN_TIME 100
1293#define QED_IWARP_MAX_NO_PROGRESS_CNT 5
1294
1295/* This function waits for all the bits of a bmap to be cleared, as long as
1296 * there is progress ( i.e. the number of bits left to be cleared decreases )
1297 * the function continues.
1298 */
1299static int
1300qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap)
1301{
1302 int prev_weight = 0;
1303 int wait_count = 0;
1304 int weight = 0;
1305
1306 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1307 prev_weight = weight;
1308
1309 while (weight) {
1310 msleep(QED_IWARP_MAX_CID_CLEAN_TIME);
1311
1312 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1313
1314 if (prev_weight == weight) {
1315 wait_count++;
1316 } else {
1317 prev_weight = weight;
1318 wait_count = 0;
1319 }
1320
1321 if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) {
1322 DP_NOTICE(p_hwfn,
1323 "%s bitmap wait timed out (%d cids pending)\n",
1324 bmap->name, weight);
1325 return -EBUSY;
1326 }
1327 }
1328 return 0;
1329}
1330
1331static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn)
1332{
1333 int rc;
1334 int i;
1335
1336 rc = qed_iwarp_wait_cid_map_cleared(p_hwfn,
1337 &p_hwfn->p_rdma_info->tcp_cid_map);
1338 if (rc)
1339 return rc;
1340
1341 /* Now free the tcp cids from the main cid map */
1342 for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++)
1343 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i);
1344
1345 /* Now wait for all cids to be completed */
1346 return qed_iwarp_wait_cid_map_cleared(p_hwfn,
1347 &p_hwfn->p_rdma_info->cid_map);
1348}
1349
1350static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn)
1351{
1352 struct qed_iwarp_ep *ep;
1353
1354 while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1355 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1356
1357 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1358 struct qed_iwarp_ep, list_entry);
1359
1360 if (!ep) {
1361 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1362 break;
1363 }
1364 list_del(&ep->list_entry);
1365
1366 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1367
1368 if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID)
1369 qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid);
1370
1371 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1372 }
1373}
1374
1375static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init)
1376{
1377 struct qed_iwarp_ep *ep;
1378 int rc = 0;
1379 int count;
1380 u32 cid;
1381 int i;
1382
1383 count = init ? QED_IWARP_PREALLOC_CNT : 1;
1384 for (i = 0; i < count; i++) {
1385 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1386 if (rc)
1387 return rc;
1388
1389 /* During initialization we allocate from the main pool,
1390 * afterwards we allocate only from the tcp_cid.
1391 */
1392 if (init) {
1393 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1394 if (rc)
1395 goto err;
1396 qed_iwarp_set_tcp_cid(p_hwfn, cid);
1397 } else {
1398 /* We don't care about the return code, it's ok if
1399 * tcp_cid remains invalid...in this case we'll
1400 * defer allocation
1401 */
1402 qed_iwarp_alloc_tcp_cid(p_hwfn, &cid);
1403 }
1404
1405 ep->tcp_cid = cid;
1406
1407 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1408 list_add_tail(&ep->list_entry,
1409 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
1410 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1411 }
1412
1413 return rc;
1414
1415err:
1416 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1417
1418 return rc;
1419}
1420
1421int qed_iwarp_alloc(struct qed_hwfn *p_hwfn)
1422{
1423 int rc;
1424
1425 /* Allocate bitmap for tcp cid. These are used by passive side
1426 * to ensure it can allocate a tcp cid during dpc that was
1427 * pre-acquired and doesn't require dynamic allocation of ilt
1428 */
1429 rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
1430 QED_IWARP_PREALLOC_CNT, "TCP_CID");
1431 if (rc) {
1432 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1433 "Failed to allocate tcp cid, rc = %d\n", rc);
1434 return rc;
1435 }
1436
1437 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list);
1438 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1439
1440 rc = qed_iwarp_prealloc_ep(p_hwfn, true);
1441 if (rc)
1442 return rc;
1443
1444 return qed_ooo_alloc(p_hwfn);
1445}
1446
1447void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn)
1448{
1449 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1450
1451 qed_ooo_free(p_hwfn);
1452 qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1);
1453 kfree(iwarp_info->mpa_bufs);
1454 kfree(iwarp_info->partial_fpdus);
1455 kfree(iwarp_info->mpa_intermediate_buf);
1456}
1457
1458int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams)
1459{
1460 struct qed_hwfn *p_hwfn = rdma_cxt;
1461 struct qed_iwarp_ep *ep;
1462 u8 mpa_data_size = 0;
1463 int rc;
1464
1465 ep = iparams->ep_context;
1466 if (!ep) {
1467 DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n");
1468 return -EINVAL;
1469 }
1470
1471 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
1472 iparams->qp->icid, ep->tcp_cid);
1473
1474 if ((iparams->ord > QED_IWARP_ORD_DEFAULT) ||
1475 (iparams->ird > QED_IWARP_IRD_DEFAULT)) {
1476 DP_VERBOSE(p_hwfn,
1477 QED_MSG_RDMA,
1478 "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1479 iparams->qp->icid,
1480 ep->tcp_cid, iparams->ord, iparams->ord);
1481 return -EINVAL;
1482 }
1483
1484 qed_iwarp_prealloc_ep(p_hwfn, false);
1485
1486 ep->cb_context = iparams->cb_context;
1487 ep->qp = iparams->qp;
1488 ep->qp->ep = ep;
1489
1490 if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
1491 /* Negotiate ord/ird: if upperlayer requested ord larger than
1492 * ird advertised by remote, we need to decrease our ord
1493 */
1494 if (iparams->ord > ep->cm_info.ird)
1495 iparams->ord = ep->cm_info.ird;
1496
1497 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) &&
1498 (iparams->ird == 0))
1499 iparams->ird = 1;
1500 }
1501
1502 /* Update cm_info ord/ird to be negotiated values */
1503 ep->cm_info.ord = iparams->ord;
1504 ep->cm_info.ird = iparams->ird;
1505
1506 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1507
1508 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1509 ep->cm_info.private_data_len = iparams->private_data_len +
1510 mpa_data_size;
1511
1512 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1513 iparams->private_data, iparams->private_data_len);
1514
1515 rc = qed_iwarp_mpa_offload(p_hwfn, ep);
1516 if (rc)
1517 qed_iwarp_modify_qp(p_hwfn,
1518 iparams->qp, QED_IWARP_QP_STATE_ERROR, 1);
1519
1520 return rc;
1521}
1522
1523int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams)
1524{
1525 struct qed_hwfn *p_hwfn = rdma_cxt;
1526 struct qed_iwarp_ep *ep;
1527 u8 mpa_data_size = 0;
1528
1529 ep = iparams->ep_context;
1530 if (!ep) {
1531 DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n");
1532 return -EINVAL;
1533 }
1534
1535 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid);
1536
1537 ep->cb_context = iparams->cb_context;
1538 ep->qp = NULL;
1539
1540 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1541
1542 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1543 ep->cm_info.private_data_len = iparams->private_data_len +
1544 mpa_data_size;
1545
1546 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1547 iparams->private_data, iparams->private_data_len);
1548
1549 return qed_iwarp_mpa_offload(p_hwfn, ep);
1550}
1551
1552static void
1553qed_iwarp_print_cm_info(struct qed_hwfn *p_hwfn,
1554 struct qed_iwarp_cm_info *cm_info)
1555{
1556 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "ip_version = %d\n",
1557 cm_info->ip_version);
1558
1559 if (cm_info->ip_version == QED_TCP_IPV4)
1560 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1561 "remote_ip %pI4h:%x, local_ip %pI4h:%x vlan=%x\n",
1562 cm_info->remote_ip, cm_info->remote_port,
1563 cm_info->local_ip, cm_info->local_port,
1564 cm_info->vlan);
1565 else
1566 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1567 "remote_ip %pI6:%x, local_ip %pI6:%x vlan=%x\n",
1568 cm_info->remote_ip, cm_info->remote_port,
1569 cm_info->local_ip, cm_info->local_port,
1570 cm_info->vlan);
1571
1572 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1573 "private_data_len = %x ord = %d, ird = %d\n",
1574 cm_info->private_data_len, cm_info->ord, cm_info->ird);
1575}
1576
1577static int
1578qed_iwarp_ll2_post_rx(struct qed_hwfn *p_hwfn,
1579 struct qed_iwarp_ll2_buff *buf, u8 handle)
1580{
1581 int rc;
1582
1583 rc = qed_ll2_post_rx_buffer(p_hwfn, handle, buf->data_phys_addr,
1584 (u16)buf->buff_size, buf, 1);
1585 if (rc) {
1586 DP_NOTICE(p_hwfn,
1587 "Failed to repost rx buffer to ll2 rc = %d, handle=%d\n",
1588 rc, handle);
1589 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buf->buff_size,
1590 buf->data, buf->data_phys_addr);
1591 kfree(buf);
1592 }
1593
1594 return rc;
1595}
1596
1597static bool
1598qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info)
1599{
1600 struct qed_iwarp_ep *ep = NULL;
1601 bool found = false;
1602
1603 list_for_each_entry(ep,
1604 &p_hwfn->p_rdma_info->iwarp.ep_list,
1605 list_entry) {
1606 if ((ep->cm_info.local_port == cm_info->local_port) &&
1607 (ep->cm_info.remote_port == cm_info->remote_port) &&
1608 (ep->cm_info.vlan == cm_info->vlan) &&
1609 !memcmp(&ep->cm_info.local_ip, cm_info->local_ip,
1610 sizeof(cm_info->local_ip)) &&
1611 !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip,
1612 sizeof(cm_info->remote_ip))) {
1613 found = true;
1614 break;
1615 }
1616 }
1617
1618 if (found) {
1619 DP_NOTICE(p_hwfn,
1620 "SYN received on active connection - dropping\n");
1621 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1622
1623 return true;
1624 }
1625
1626 return false;
1627}
1628
1629static struct qed_iwarp_listener *
1630qed_iwarp_get_listener(struct qed_hwfn *p_hwfn,
1631 struct qed_iwarp_cm_info *cm_info)
1632{
1633 struct qed_iwarp_listener *listener = NULL;
1634 static const u32 ip_zero[4] = { 0, 0, 0, 0 };
1635 bool found = false;
1636
1637 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1638
1639 list_for_each_entry(listener,
1640 &p_hwfn->p_rdma_info->iwarp.listen_list,
1641 list_entry) {
1642 if (listener->port == cm_info->local_port) {
1643 if (!memcmp(listener->ip_addr,
1644 ip_zero, sizeof(ip_zero))) {
1645 found = true;
1646 break;
1647 }
1648
1649 if (!memcmp(listener->ip_addr,
1650 cm_info->local_ip,
1651 sizeof(cm_info->local_ip)) &&
1652 (listener->vlan == cm_info->vlan)) {
1653 found = true;
1654 break;
1655 }
1656 }
1657 }
1658
1659 if (found) {
1660 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener found = %p\n",
1661 listener);
1662 return listener;
1663 }
1664
1665 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener not found\n");
1666 return NULL;
1667}
1668
1669static int
1670qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
1671 struct qed_iwarp_cm_info *cm_info,
1672 void *buf,
1673 u8 *remote_mac_addr,
1674 u8 *local_mac_addr,
1675 int *payload_len, int *tcp_start_offset)
1676{
1677 struct vlan_ethhdr *vethh;
1678 bool vlan_valid = false;
1679 struct ipv6hdr *ip6h;
1680 struct ethhdr *ethh;
1681 struct tcphdr *tcph;
1682 struct iphdr *iph;
1683 int eth_hlen;
1684 int ip_hlen;
1685 int eth_type;
1686 int i;
1687
1688 ethh = buf;
1689 eth_type = ntohs(ethh->h_proto);
1690 if (eth_type == ETH_P_8021Q) {
1691 vlan_valid = true;
1692 vethh = (struct vlan_ethhdr *)ethh;
1693 cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK;
1694 eth_type = ntohs(vethh->h_vlan_encapsulated_proto);
1695 }
1696
1697 eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
1698
1699 if (!ether_addr_equal(ethh->h_dest,
1700 p_hwfn->p_rdma_info->iwarp.mac_addr)) {
1701 DP_VERBOSE(p_hwfn,
1702 QED_MSG_RDMA,
1703 "Got unexpected mac %pM instead of %pM\n",
1704 ethh->h_dest, p_hwfn->p_rdma_info->iwarp.mac_addr);
1705 return -EINVAL;
1706 }
1707
1708 ether_addr_copy(remote_mac_addr, ethh->h_source);
1709 ether_addr_copy(local_mac_addr, ethh->h_dest);
1710
1711 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n",
1712 eth_type, ethh->h_source);
1713
1714 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_hlen=%d destination mac: %pM\n",
1715 eth_hlen, ethh->h_dest);
1716
1717 iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen);
1718
1719 if (eth_type == ETH_P_IP) {
1720 if (iph->protocol != IPPROTO_TCP) {
1721 DP_NOTICE(p_hwfn,
1722 "Unexpected ip protocol on ll2 %x\n",
1723 iph->protocol);
1724 return -EINVAL;
1725 }
1726
1727 cm_info->local_ip[0] = ntohl(iph->daddr);
1728 cm_info->remote_ip[0] = ntohl(iph->saddr);
1729 cm_info->ip_version = QED_TCP_IPV4;
1730
1731 ip_hlen = (iph->ihl) * sizeof(u32);
1732 *payload_len = ntohs(iph->tot_len) - ip_hlen;
1733 } else if (eth_type == ETH_P_IPV6) {
1734 ip6h = (struct ipv6hdr *)iph;
1735
1736 if (ip6h->nexthdr != IPPROTO_TCP) {
1737 DP_NOTICE(p_hwfn,
1738 "Unexpected ip protocol on ll2 %x\n",
1739 iph->protocol);
1740 return -EINVAL;
1741 }
1742
1743 for (i = 0; i < 4; i++) {
1744 cm_info->local_ip[i] =
1745 ntohl(ip6h->daddr.in6_u.u6_addr32[i]);
1746 cm_info->remote_ip[i] =
1747 ntohl(ip6h->saddr.in6_u.u6_addr32[i]);
1748 }
1749 cm_info->ip_version = QED_TCP_IPV6;
1750
1751 ip_hlen = sizeof(*ip6h);
1752 *payload_len = ntohs(ip6h->payload_len);
1753 } else {
1754 DP_NOTICE(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type);
1755 return -EINVAL;
1756 }
1757
1758 tcph = (struct tcphdr *)((u8 *)iph + ip_hlen);
1759
1760 if (!tcph->syn) {
1761 DP_NOTICE(p_hwfn,
1762 "Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n",
1763 iph->ihl, tcph->source, tcph->dest);
1764 return -EINVAL;
1765 }
1766
1767 cm_info->local_port = ntohs(tcph->dest);
1768 cm_info->remote_port = ntohs(tcph->source);
1769
1770 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1771
1772 *tcp_start_offset = eth_hlen + ip_hlen;
1773
1774 return 0;
1775}
1776
1777static struct qed_iwarp_fpdu *qed_iwarp_get_curr_fpdu(struct qed_hwfn *p_hwfn,
1778 u16 cid)
1779{
1780 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1781 struct qed_iwarp_fpdu *partial_fpdu;
1782 u32 idx;
1783
1784 idx = cid - qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP);
1785 if (idx >= iwarp_info->max_num_partial_fpdus) {
1786 DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid,
1787 iwarp_info->max_num_partial_fpdus);
1788 return NULL;
1789 }
1790
1791 partial_fpdu = &iwarp_info->partial_fpdus[idx];
1792
1793 return partial_fpdu;
1794}
1795
1796enum qed_iwarp_mpa_pkt_type {
1797 QED_IWARP_MPA_PKT_PACKED,
1798 QED_IWARP_MPA_PKT_PARTIAL,
1799 QED_IWARP_MPA_PKT_UNALIGNED
1800};
1801
1802#define QED_IWARP_INVALID_FPDU_LENGTH 0xffff
1803#define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2)
1804#define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4)
1805
1806/* Pad to multiple of 4 */
1807#define QED_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) ALIGN(data_len, 4)
1808#define QED_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \
1809 (QED_IWARP_PDU_DATA_LEN_WITH_PAD((_mpa_len) + \
1810 QED_IWARP_MPA_FPDU_LENGTH_SIZE) + \
1811 QED_IWARP_MPA_CRC32_DIGEST_SIZE)
1812
1813/* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */
1814#define QED_IWARP_MAX_BDS_PER_FPDU 3
1815
1816static const char * const pkt_type_str[] = {
1817 "QED_IWARP_MPA_PKT_PACKED",
1818 "QED_IWARP_MPA_PKT_PARTIAL",
1819 "QED_IWARP_MPA_PKT_UNALIGNED"
1820};
1821
1822static int
1823qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
1824 struct qed_iwarp_fpdu *fpdu,
1825 struct qed_iwarp_ll2_buff *buf);
1826
1827static enum qed_iwarp_mpa_pkt_type
1828qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn,
1829 struct qed_iwarp_fpdu *fpdu,
1830 u16 tcp_payload_len, u8 *mpa_data)
1831{
1832 enum qed_iwarp_mpa_pkt_type pkt_type;
1833 u16 mpa_len;
1834
1835 if (fpdu->incomplete_bytes) {
1836 pkt_type = QED_IWARP_MPA_PKT_UNALIGNED;
1837 goto out;
1838 }
1839
1840 /* special case of one byte remaining...
1841 * lower byte will be read next packet
1842 */
1843 if (tcp_payload_len == 1) {
1844 fpdu->fpdu_length = *mpa_data << BITS_PER_BYTE;
1845 pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
1846 goto out;
1847 }
1848
1849 mpa_len = ntohs(*((u16 *)(mpa_data)));
1850 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
1851
1852 if (fpdu->fpdu_length <= tcp_payload_len)
1853 pkt_type = QED_IWARP_MPA_PKT_PACKED;
1854 else
1855 pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
1856
1857out:
1858 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1859 "MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n",
1860 pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len);
1861
1862 return pkt_type;
1863}
1864
1865static void
1866qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf,
1867 struct qed_iwarp_fpdu *fpdu,
1868 struct unaligned_opaque_data *pkt_data,
1869 u16 tcp_payload_size, u8 placement_offset)
1870{
1871 fpdu->mpa_buf = buf;
1872 fpdu->pkt_hdr = buf->data_phys_addr + placement_offset;
1873 fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset;
1874 fpdu->mpa_frag = buf->data_phys_addr + pkt_data->first_mpa_offset;
1875 fpdu->mpa_frag_virt = (u8 *)(buf->data) + pkt_data->first_mpa_offset;
1876
1877 if (tcp_payload_size == 1)
1878 fpdu->incomplete_bytes = QED_IWARP_INVALID_FPDU_LENGTH;
1879 else if (tcp_payload_size < fpdu->fpdu_length)
1880 fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size;
1881 else
1882 fpdu->incomplete_bytes = 0; /* complete fpdu */
1883
1884 fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes;
1885}
1886
1887static int
1888qed_iwarp_cp_pkt(struct qed_hwfn *p_hwfn,
1889 struct qed_iwarp_fpdu *fpdu,
1890 struct unaligned_opaque_data *pkt_data,
1891 struct qed_iwarp_ll2_buff *buf, u16 tcp_payload_size)
1892{
1893 u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf;
1894 int rc;
1895
1896 /* need to copy the data from the partial packet stored in fpdu
1897 * to the new buf, for this we also need to move the data currently
1898 * placed on the buf. The assumption is that the buffer is big enough
1899 * since fpdu_length <= mss, we use an intermediate buffer since
1900 * we may need to copy the new data to an overlapping location
1901 */
1902 if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) {
1903 DP_ERR(p_hwfn,
1904 "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",
1905 buf->buff_size, fpdu->mpa_frag_len,
1906 tcp_payload_size, fpdu->incomplete_bytes);
1907 return -EINVAL;
1908 }
1909
1910 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1911 "MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n",
1912 fpdu->mpa_frag_virt, fpdu->mpa_frag_len,
1913 (u8 *)(buf->data) + pkt_data->first_mpa_offset,
1914 tcp_payload_size);
1915
1916 memcpy(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len);
1917 memcpy(tmp_buf + fpdu->mpa_frag_len,
1918 (u8 *)(buf->data) + pkt_data->first_mpa_offset,
1919 tcp_payload_size);
1920
1921 rc = qed_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf);
1922 if (rc)
1923 return rc;
1924
1925 /* If we managed to post the buffer copy the data to the new buffer
1926 * o/w this will occur in the next round...
1927 */
1928 memcpy((u8 *)(buf->data), tmp_buf,
1929 fpdu->mpa_frag_len + tcp_payload_size);
1930
1931 fpdu->mpa_buf = buf;
1932 /* fpdu->pkt_hdr remains as is */
1933 /* fpdu->mpa_frag is overridden with new buf */
1934 fpdu->mpa_frag = buf->data_phys_addr;
1935 fpdu->mpa_frag_virt = buf->data;
1936 fpdu->mpa_frag_len += tcp_payload_size;
1937
1938 fpdu->incomplete_bytes -= tcp_payload_size;
1939
1940 DP_VERBOSE(p_hwfn,
1941 QED_MSG_RDMA,
1942 "MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n",
1943 buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size,
1944 fpdu->incomplete_bytes);
1945
1946 return 0;
1947}
1948
1949static void
1950qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn,
1951 struct qed_iwarp_fpdu *fpdu, u8 *mpa_data)
1952{
1953 u16 mpa_len;
1954
1955 /* Update incomplete packets if needed */
1956 if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) {
1957 /* Missing lower byte is now available */
1958 mpa_len = fpdu->fpdu_length | *mpa_data;
1959 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
1960 /* one byte of hdr */
1961 fpdu->mpa_frag_len = 1;
1962 fpdu->incomplete_bytes = fpdu->fpdu_length - 1;
1963 DP_VERBOSE(p_hwfn,
1964 QED_MSG_RDMA,
1965 "MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n",
1966 mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes);
1967 }
1968}
1969
1970#define QED_IWARP_IS_RIGHT_EDGE(_curr_pkt) \
1971 (GET_FIELD((_curr_pkt)->flags, \
1972 UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE))
1973
1974/* This function is used to recycle a buffer using the ll2 drop option. It
1975 * uses the mechanism to ensure that all buffers posted to tx before this one
1976 * were completed. The buffer sent here will be sent as a cookie in the tx
1977 * completion function and can then be reposted to rx chain when done. The flow
1978 * that requires this is the flow where a FPDU splits over more than 3 tcp
1979 * segments. In this case the driver needs to re-post a rx buffer instead of
1980 * the one received, but driver can't simply repost a buffer it copied from
1981 * as there is a case where the buffer was originally a packed FPDU, and is
1982 * partially posted to FW. Driver needs to ensure FW is done with it.
1983 */
1984static int
1985qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
1986 struct qed_iwarp_fpdu *fpdu,
1987 struct qed_iwarp_ll2_buff *buf)
1988{
1989 struct qed_ll2_tx_pkt_info tx_pkt;
1990 u8 ll2_handle;
1991 int rc;
1992
1993 memset(&tx_pkt, 0, sizeof(tx_pkt));
1994 tx_pkt.num_of_bds = 1;
1995 tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP;
1996 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
1997 tx_pkt.first_frag = fpdu->pkt_hdr;
1998 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
1999 buf->piggy_buf = NULL;
2000 tx_pkt.cookie = buf;
2001
2002 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2003
2004 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2005 if (rc)
2006 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2007 "Can't drop packet rc=%d\n", rc);
2008
2009 DP_VERBOSE(p_hwfn,
2010 QED_MSG_RDMA,
2011 "MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n",
2012 (unsigned long int)tx_pkt.first_frag,
2013 tx_pkt.first_frag_len, buf, rc);
2014
2015 return rc;
2016}
2017
2018static int
2019qed_iwarp_win_right_edge(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu)
2020{
2021 struct qed_ll2_tx_pkt_info tx_pkt;
2022 u8 ll2_handle;
2023 int rc;
2024
2025 memset(&tx_pkt, 0, sizeof(tx_pkt));
2026 tx_pkt.num_of_bds = 1;
2027 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2028 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
2029
2030 tx_pkt.first_frag = fpdu->pkt_hdr;
2031 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
2032 tx_pkt.enable_ip_cksum = true;
2033 tx_pkt.enable_l4_cksum = true;
2034 tx_pkt.calc_ip_len = true;
2035 /* vlan overload with enum iwarp_ll2_tx_queues */
2036 tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE;
2037
2038 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2039
2040 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2041 if (rc)
2042 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2043 "Can't send right edge rc=%d\n", rc);
2044 DP_VERBOSE(p_hwfn,
2045 QED_MSG_RDMA,
2046 "MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n",
2047 tx_pkt.num_of_bds,
2048 (unsigned long int)tx_pkt.first_frag,
2049 tx_pkt.first_frag_len, rc);
2050
2051 return rc;
2052}
2053
2054static int
2055qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn,
2056 struct qed_iwarp_fpdu *fpdu,
2057 struct unaligned_opaque_data *curr_pkt,
2058 struct qed_iwarp_ll2_buff *buf,
2059 u16 tcp_payload_size, enum qed_iwarp_mpa_pkt_type pkt_type)
2060{
2061 struct qed_ll2_tx_pkt_info tx_pkt;
2062 u8 ll2_handle;
2063 int rc;
2064
2065 memset(&tx_pkt, 0, sizeof(tx_pkt));
2066
2067 /* An unaligned packet means it's split over two tcp segments. So the
2068 * complete packet requires 3 bds, one for the header, one for the
2069 * part of the fpdu of the first tcp segment, and the last fragment
2070 * will point to the remainder of the fpdu. A packed pdu, requires only
2071 * two bds, one for the header and one for the data.
2072 */
2073 tx_pkt.num_of_bds = (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2;
2074 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2075 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; /* offset in words */
2076
2077 /* Send the mpa_buf only with the last fpdu (in case of packed) */
2078 if (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED ||
2079 tcp_payload_size <= fpdu->fpdu_length)
2080 tx_pkt.cookie = fpdu->mpa_buf;
2081
2082 tx_pkt.first_frag = fpdu->pkt_hdr;
2083 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
2084 tx_pkt.enable_ip_cksum = true;
2085 tx_pkt.enable_l4_cksum = true;
2086 tx_pkt.calc_ip_len = true;
2087 /* vlan overload with enum iwarp_ll2_tx_queues */
2088 tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE;
2089
2090 /* special case of unaligned packet and not packed, need to send
2091 * both buffers as cookie to release.
2092 */
2093 if (tcp_payload_size == fpdu->incomplete_bytes)
2094 fpdu->mpa_buf->piggy_buf = buf;
2095
2096 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2097
2098 /* Set first fragment to header */
2099 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2100 if (rc)
2101 goto out;
2102
2103 /* Set second fragment to first part of packet */
2104 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle,
2105 fpdu->mpa_frag,
2106 fpdu->mpa_frag_len);
2107 if (rc)
2108 goto out;
2109
2110 if (!fpdu->incomplete_bytes)
2111 goto out;
2112
2113 /* Set third fragment to second part of the packet */
2114 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn,
2115 ll2_handle,
2116 buf->data_phys_addr +
2117 curr_pkt->first_mpa_offset,
2118 fpdu->incomplete_bytes);
2119out:
2120 DP_VERBOSE(p_hwfn,
2121 QED_MSG_RDMA,
2122 "MPA_ALIGN: Sent FPDU num_bds=%d first_frag_len=%x, mpa_frag_len=0x%x, incomplete_bytes:0x%x rc=%d\n",
2123 tx_pkt.num_of_bds,
2124 tx_pkt.first_frag_len,
2125 fpdu->mpa_frag_len,
2126 fpdu->incomplete_bytes, rc);
2127
2128 return rc;
2129}
2130
2131static void
2132qed_iwarp_mpa_get_data(struct qed_hwfn *p_hwfn,
2133 struct unaligned_opaque_data *curr_pkt,
2134 u32 opaque_data0, u32 opaque_data1)
2135{
2136 u64 opaque_data;
2137
2138 opaque_data = HILO_64(opaque_data1, opaque_data0);
2139 *curr_pkt = *((struct unaligned_opaque_data *)&opaque_data);
2140
2141 curr_pkt->first_mpa_offset = curr_pkt->tcp_payload_offset +
2142 le16_to_cpu(curr_pkt->first_mpa_offset);
2143 curr_pkt->cid = le32_to_cpu(curr_pkt->cid);
2144}
2145
2146/* This function is called when an unaligned or incomplete MPA packet arrives
2147 * driver needs to align the packet, perhaps using previous data and send
2148 * it down to FW once it is aligned.
2149 */
2150static int
2151qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn,
2152 struct qed_iwarp_ll2_mpa_buf *mpa_buf)
2153{
2154 struct unaligned_opaque_data *curr_pkt = &mpa_buf->data;
2155 struct qed_iwarp_ll2_buff *buf = mpa_buf->ll2_buf;
2156 enum qed_iwarp_mpa_pkt_type pkt_type;
2157 struct qed_iwarp_fpdu *fpdu;
2158 int rc = -EINVAL;
2159 u8 *mpa_data;
2160
2161 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, curr_pkt->cid & 0xffff);
2162 if (!fpdu) { /* something corrupt with cid, post rx back */
2163 DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n",
2164 curr_pkt->cid);
2165 goto err;
2166 }
2167
2168 do {
2169 mpa_data = ((u8 *)(buf->data) + curr_pkt->first_mpa_offset);
2170
2171 pkt_type = qed_iwarp_mpa_classify(p_hwfn, fpdu,
2172 mpa_buf->tcp_payload_len,
2173 mpa_data);
2174
2175 switch (pkt_type) {
2176 case QED_IWARP_MPA_PKT_PARTIAL:
2177 qed_iwarp_init_fpdu(buf, fpdu,
2178 curr_pkt,
2179 mpa_buf->tcp_payload_len,
2180 mpa_buf->placement_offset);
2181
2182 if (!QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
2183 mpa_buf->tcp_payload_len = 0;
2184 break;
2185 }
2186
2187 rc = qed_iwarp_win_right_edge(p_hwfn, fpdu);
2188
2189 if (rc) {
2190 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2191 "Can't send FPDU:reset rc=%d\n", rc);
2192 memset(fpdu, 0, sizeof(*fpdu));
2193 break;
2194 }
2195
2196 mpa_buf->tcp_payload_len = 0;
2197 break;
2198 case QED_IWARP_MPA_PKT_PACKED:
2199 qed_iwarp_init_fpdu(buf, fpdu,
2200 curr_pkt,
2201 mpa_buf->tcp_payload_len,
2202 mpa_buf->placement_offset);
2203
2204 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
2205 mpa_buf->tcp_payload_len,
2206 pkt_type);
2207 if (rc) {
2208 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2209 "Can't send FPDU:reset rc=%d\n", rc);
2210 memset(fpdu, 0, sizeof(*fpdu));
2211 break;
2212 }
2213
2214 mpa_buf->tcp_payload_len -= fpdu->fpdu_length;
2215 curr_pkt->first_mpa_offset += fpdu->fpdu_length;
2216 break;
2217 case QED_IWARP_MPA_PKT_UNALIGNED:
2218 qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data);
2219 if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) {
2220 /* special handling of fpdu split over more
2221 * than 2 segments
2222 */
2223 if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
2224 rc = qed_iwarp_win_right_edge(p_hwfn,
2225 fpdu);
2226 /* packet will be re-processed later */
2227 if (rc)
2228 return rc;
2229 }
2230
2231 rc = qed_iwarp_cp_pkt(p_hwfn, fpdu, curr_pkt,
2232 buf,
2233 mpa_buf->tcp_payload_len);
2234 if (rc) /* packet will be re-processed later */
2235 return rc;
2236
2237 mpa_buf->tcp_payload_len = 0;
2238 break;
2239 }
2240
2241 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
2242 mpa_buf->tcp_payload_len,
2243 pkt_type);
2244 if (rc) {
2245 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2246 "Can't send FPDU:delay rc=%d\n", rc);
2247 /* don't reset fpdu -> we need it for next
2248 * classify
2249 */
2250 break;
2251 }
2252
2253 mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes;
2254 curr_pkt->first_mpa_offset += fpdu->incomplete_bytes;
2255 /* The framed PDU was sent - no more incomplete bytes */
2256 fpdu->incomplete_bytes = 0;
2257 break;
2258 }
2259 } while (mpa_buf->tcp_payload_len && !rc);
2260
2261 return rc;
2262
2263err:
2264 qed_iwarp_ll2_post_rx(p_hwfn,
2265 buf,
2266 p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle);
2267 return rc;
2268}
2269
2270static void qed_iwarp_process_pending_pkts(struct qed_hwfn *p_hwfn)
2271{
2272 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2273 struct qed_iwarp_ll2_mpa_buf *mpa_buf = NULL;
2274 int rc;
2275
2276 while (!list_empty(&iwarp_info->mpa_buf_pending_list)) {
2277 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_pending_list,
2278 struct qed_iwarp_ll2_mpa_buf,
2279 list_entry);
2280
2281 rc = qed_iwarp_process_mpa_pkt(p_hwfn, mpa_buf);
2282
2283 /* busy means break and continue processing later, don't
2284 * remove the buf from the pending list.
2285 */
2286 if (rc == -EBUSY)
2287 break;
2288
2289 list_move_tail(&mpa_buf->list_entry,
2290 &iwarp_info->mpa_buf_list);
2291
2292 if (rc) { /* different error, don't continue */
2293 DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc);
2294 break;
2295 }
2296 }
2297}
2298
2299static void
2300qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
2301{
2302 struct qed_iwarp_ll2_mpa_buf *mpa_buf;
2303 struct qed_iwarp_info *iwarp_info;
2304 struct qed_hwfn *p_hwfn = cxt;
2305
2306 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2307 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_list,
2308 struct qed_iwarp_ll2_mpa_buf, list_entry);
2309 if (!mpa_buf) {
2310 DP_ERR(p_hwfn, "No free mpa buf\n");
2311 goto err;
2312 }
2313
2314 list_del(&mpa_buf->list_entry);
2315 qed_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data,
2316 data->opaque_data_0, data->opaque_data_1);
2317
2318 DP_VERBOSE(p_hwfn,
2319 QED_MSG_RDMA,
2320 "LL2 MPA CompRx payload_len:0x%x\tfirst_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n",
2321 data->length.packet_length, mpa_buf->data.first_mpa_offset,
2322 mpa_buf->data.tcp_payload_offset, mpa_buf->data.flags,
2323 mpa_buf->data.cid);
2324
2325 mpa_buf->ll2_buf = data->cookie;
2326 mpa_buf->tcp_payload_len = data->length.packet_length -
2327 mpa_buf->data.first_mpa_offset;
2328 mpa_buf->data.first_mpa_offset += data->u.placement_offset;
2329 mpa_buf->placement_offset = data->u.placement_offset;
2330
2331 list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_pending_list);
2332
2333 qed_iwarp_process_pending_pkts(p_hwfn);
2334 return;
2335err:
2336 qed_iwarp_ll2_post_rx(p_hwfn, data->cookie,
2337 iwarp_info->ll2_mpa_handle);
2338}
2339
2340static void
2341qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
2342{
2343 struct qed_iwarp_ll2_buff *buf = data->cookie;
2344 struct qed_iwarp_listener *listener;
2345 struct qed_ll2_tx_pkt_info tx_pkt;
2346 struct qed_iwarp_cm_info cm_info;
2347 struct qed_hwfn *p_hwfn = cxt;
2348 u8 remote_mac_addr[ETH_ALEN];
2349 u8 local_mac_addr[ETH_ALEN];
2350 struct qed_iwarp_ep *ep;
2351 int tcp_start_offset;
2352 u8 ll2_syn_handle;
2353 int payload_len;
2354 u32 hdr_size;
2355 int rc;
2356
2357 memset(&cm_info, 0, sizeof(cm_info));
2358 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
2359
2360 /* Check if packet was received with errors... */
2361 if (data->err_flags) {
2362 DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n",
2363 data->err_flags);
2364 goto err;
2365 }
2366
2367 if (GET_FIELD(data->parse_flags,
2368 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) &&
2369 GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) {
2370 DP_NOTICE(p_hwfn, "Syn packet received with checksum error\n");
2371 goto err;
2372 }
2373
2374 rc = qed_iwarp_parse_rx_pkt(p_hwfn, &cm_info, (u8 *)(buf->data) +
2375 data->u.placement_offset, remote_mac_addr,
2376 local_mac_addr, &payload_len,
2377 &tcp_start_offset);
2378 if (rc)
2379 goto err;
2380
2381 /* Check if there is a listener for this 4-tuple+vlan */
2382 listener = qed_iwarp_get_listener(p_hwfn, &cm_info);
2383 if (!listener) {
2384 DP_VERBOSE(p_hwfn,
2385 QED_MSG_RDMA,
2386 "SYN received on tuple not listened on parse_flags=%d packet len=%d\n",
2387 data->parse_flags, data->length.packet_length);
2388
2389 memset(&tx_pkt, 0, sizeof(tx_pkt));
2390 tx_pkt.num_of_bds = 1;
2391 tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2;
2392 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2393 tx_pkt.first_frag = buf->data_phys_addr +
2394 data->u.placement_offset;
2395 tx_pkt.first_frag_len = data->length.packet_length;
2396 tx_pkt.cookie = buf;
2397
2398 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_syn_handle,
2399 &tx_pkt, true);
2400
2401 if (rc) {
2402 DP_NOTICE(p_hwfn,
2403 "Can't post SYN back to chip rc=%d\n", rc);
2404 goto err;
2405 }
2406 return;
2407 }
2408
2409 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n");
2410 /* There may be an open ep on this connection if this is a syn
2411 * retrasnmit... need to make sure there isn't...
2412 */
2413 if (qed_iwarp_ep_exists(p_hwfn, &cm_info))
2414 goto err;
2415
2416 ep = qed_iwarp_get_free_ep(p_hwfn);
2417 if (!ep)
2418 goto err;
2419
2420 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2421 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
2422 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2423
2424 ether_addr_copy(ep->remote_mac_addr, remote_mac_addr);
2425 ether_addr_copy(ep->local_mac_addr, local_mac_addr);
2426
2427 memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info));
2428
2429 hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60);
2430 ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size;
2431 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
2432
2433 ep->event_cb = listener->event_cb;
2434 ep->cb_context = listener->cb_context;
2435 ep->connect_mode = TCP_CONNECT_PASSIVE;
2436
2437 ep->syn = buf;
2438 ep->syn_ip_payload_length = (u16)payload_len;
2439 ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset +
2440 tcp_start_offset;
2441
2442 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
2443 if (rc) {
2444 qed_iwarp_return_ep(p_hwfn, ep);
2445 goto err;
2446 }
2447
2448 return;
2449err:
2450 qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle);
2451}
2452
2453static void qed_iwarp_ll2_rel_rx_pkt(void *cxt, u8 connection_handle,
2454 void *cookie, dma_addr_t rx_buf_addr,
2455 bool b_last_packet)
2456{
2457 struct qed_iwarp_ll2_buff *buffer = cookie;
2458 struct qed_hwfn *p_hwfn = cxt;
2459
2460 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
2461 buffer->data, buffer->data_phys_addr);
2462 kfree(buffer);
2463}
2464
2465static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle,
2466 void *cookie, dma_addr_t first_frag_addr,
2467 bool b_last_fragment, bool b_last_packet)
2468{
2469 struct qed_iwarp_ll2_buff *buffer = cookie;
2470 struct qed_iwarp_ll2_buff *piggy;
2471 struct qed_hwfn *p_hwfn = cxt;
2472
2473 if (!buffer) /* can happen in packed mpa unaligned... */
2474 return;
2475
2476 /* this was originally an rx packet, post it back */
2477 piggy = buffer->piggy_buf;
2478 if (piggy) {
2479 buffer->piggy_buf = NULL;
2480 qed_iwarp_ll2_post_rx(p_hwfn, piggy, connection_handle);
2481 }
2482
2483 qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle);
2484
2485 if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle)
2486 qed_iwarp_process_pending_pkts(p_hwfn);
2487
2488 return;
2489}
2490
2491static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle,
2492 void *cookie, dma_addr_t first_frag_addr,
2493 bool b_last_fragment, bool b_last_packet)
2494{
2495 struct qed_iwarp_ll2_buff *buffer = cookie;
2496 struct qed_hwfn *p_hwfn = cxt;
2497
2498 if (!buffer)
2499 return;
2500
2501 if (buffer->piggy_buf) {
2502 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
2503 buffer->piggy_buf->buff_size,
2504 buffer->piggy_buf->data,
2505 buffer->piggy_buf->data_phys_addr);
2506
2507 kfree(buffer->piggy_buf);
2508 }
2509
2510 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
2511 buffer->data, buffer->data_phys_addr);
2512
2513 kfree(buffer);
2514}
2515
2516/* The only slowpath for iwarp ll2 is unalign flush. When this completion
2517 * is received, need to reset the FPDU.
2518 */
2519static void
2520qed_iwarp_ll2_slowpath(void *cxt,
2521 u8 connection_handle,
2522 u32 opaque_data_0, u32 opaque_data_1)
2523{
2524 struct unaligned_opaque_data unalign_data;
2525 struct qed_hwfn *p_hwfn = cxt;
2526 struct qed_iwarp_fpdu *fpdu;
2527
2528 qed_iwarp_mpa_get_data(p_hwfn, &unalign_data,
2529 opaque_data_0, opaque_data_1);
2530
2531 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "(0x%x) Flush fpdu\n",
2532 unalign_data.cid);
2533
2534 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)unalign_data.cid);
2535 if (fpdu)
2536 memset(fpdu, 0, sizeof(*fpdu));
2537}
2538
2539static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn)
2540{
2541 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2542 int rc = 0;
2543
2544 if (iwarp_info->ll2_syn_handle != QED_IWARP_HANDLE_INVAL) {
2545 rc = qed_ll2_terminate_connection(p_hwfn,
2546 iwarp_info->ll2_syn_handle);
2547 if (rc)
2548 DP_INFO(p_hwfn, "Failed to terminate syn connection\n");
2549
2550 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_syn_handle);
2551 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
2552 }
2553
2554 if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) {
2555 rc = qed_ll2_terminate_connection(p_hwfn,
2556 iwarp_info->ll2_ooo_handle);
2557 if (rc)
2558 DP_INFO(p_hwfn, "Failed to terminate ooo connection\n");
2559
2560 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
2561 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
2562 }
2563
2564 if (iwarp_info->ll2_mpa_handle != QED_IWARP_HANDLE_INVAL) {
2565 rc = qed_ll2_terminate_connection(p_hwfn,
2566 iwarp_info->ll2_mpa_handle);
2567 if (rc)
2568 DP_INFO(p_hwfn, "Failed to terminate mpa connection\n");
2569
2570 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
2571 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
2572 }
2573
2574 qed_llh_remove_mac_filter(p_hwfn->cdev, 0,
2575 p_hwfn->p_rdma_info->iwarp.mac_addr);
2576
2577 return rc;
2578}
2579
2580static int
2581qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn,
2582 int num_rx_bufs, int buff_size, u8 ll2_handle)
2583{
2584 struct qed_iwarp_ll2_buff *buffer;
2585 int rc = 0;
2586 int i;
2587
2588 for (i = 0; i < num_rx_bufs; i++) {
2589 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
2590 if (!buffer) {
2591 rc = -ENOMEM;
2592 break;
2593 }
2594
2595 buffer->data = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
2596 buff_size,
2597 &buffer->data_phys_addr,
2598 GFP_KERNEL);
2599 if (!buffer->data) {
2600 kfree(buffer);
2601 rc = -ENOMEM;
2602 break;
2603 }
2604
2605 buffer->buff_size = buff_size;
2606 rc = qed_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle);
2607 if (rc)
2608 /* buffers will be deallocated by qed_ll2 */
2609 break;
2610 }
2611 return rc;
2612}
2613
2614#define QED_IWARP_MAX_BUF_SIZE(mtu) \
2615 ALIGN((mtu) + ETH_HLEN + 2 * VLAN_HLEN + 2 + ETH_CACHE_LINE_SIZE, \
2616 ETH_CACHE_LINE_SIZE)
2617
2618static int
2619qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
2620 struct qed_rdma_start_in_params *params,
2621 u32 rcv_wnd_size)
2622{
2623 struct qed_iwarp_info *iwarp_info;
2624 struct qed_ll2_acquire_data data;
2625 struct qed_ll2_cbs cbs;
2626 u32 buff_size;
2627 u16 n_ooo_bufs;
2628 int rc = 0;
2629 int i;
2630
2631 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2632 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
2633 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
2634 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
2635
2636 iwarp_info->max_mtu = params->max_mtu;
2637
2638 ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr);
2639
2640 rc = qed_llh_add_mac_filter(p_hwfn->cdev, 0, params->mac_addr);
2641 if (rc)
2642 return rc;
2643
2644 /* Start SYN connection */
2645 cbs.rx_comp_cb = qed_iwarp_ll2_comp_syn_pkt;
2646 cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt;
2647 cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt;
2648 cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt;
2649 cbs.slowpath_cb = NULL;
2650 cbs.cookie = p_hwfn;
2651
2652 memset(&data, 0, sizeof(data));
2653 data.input.conn_type = QED_LL2_TYPE_IWARP;
2654 data.input.mtu = params->max_mtu;
2655 data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE;
2656 data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE;
2657 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
2658 data.input.tx_tc = PKT_LB_TC;
2659 data.input.tx_dest = QED_LL2_TX_DEST_LB;
2660 data.p_connection_handle = &iwarp_info->ll2_syn_handle;
2661 data.cbs = &cbs;
2662
2663 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2664 if (rc) {
2665 DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n");
2666 qed_llh_remove_mac_filter(p_hwfn->cdev, 0, params->mac_addr);
2667 return rc;
2668 }
2669
2670 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle);
2671 if (rc) {
2672 DP_NOTICE(p_hwfn, "Failed to establish LL2 connection\n");
2673 goto err;
2674 }
2675
2676 buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu);
2677 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
2678 QED_IWARP_LL2_SYN_RX_SIZE,
2679 buff_size,
2680 iwarp_info->ll2_syn_handle);
2681 if (rc)
2682 goto err;
2683
2684 /* Start OOO connection */
2685 data.input.conn_type = QED_LL2_TYPE_OOO;
2686 data.input.mtu = params->max_mtu;
2687
2688 n_ooo_bufs = (QED_IWARP_MAX_OOO * rcv_wnd_size) /
2689 iwarp_info->max_mtu;
2690 n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE);
2691
2692 data.input.rx_num_desc = n_ooo_bufs;
2693 data.input.rx_num_ooo_buffers = n_ooo_bufs;
2694
2695 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
2696 data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE;
2697 data.p_connection_handle = &iwarp_info->ll2_ooo_handle;
2698
2699 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2700 if (rc)
2701 goto err;
2702
2703 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
2704 if (rc)
2705 goto err;
2706
2707 /* Start Unaligned MPA connection */
2708 cbs.rx_comp_cb = qed_iwarp_ll2_comp_mpa_pkt;
2709 cbs.slowpath_cb = qed_iwarp_ll2_slowpath;
2710
2711 memset(&data, 0, sizeof(data));
2712 data.input.conn_type = QED_LL2_TYPE_IWARP;
2713 data.input.mtu = params->max_mtu;
2714 /* FW requires that once a packet arrives OOO, it must have at
2715 * least 2 rx buffers available on the unaligned connection
2716 * for handling the case that it is a partial fpdu.
2717 */
2718 data.input.rx_num_desc = n_ooo_bufs * 2;
2719 data.input.tx_num_desc = data.input.rx_num_desc;
2720 data.input.tx_max_bds_per_packet = QED_IWARP_MAX_BDS_PER_FPDU;
2721 data.input.tx_tc = PKT_LB_TC;
2722 data.input.tx_dest = QED_LL2_TX_DEST_LB;
2723 data.p_connection_handle = &iwarp_info->ll2_mpa_handle;
2724 data.input.secondary_queue = true;
2725 data.cbs = &cbs;
2726
2727 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2728 if (rc)
2729 goto err;
2730
2731 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
2732 if (rc)
2733 goto err;
2734
2735 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
2736 data.input.rx_num_desc,
2737 buff_size,
2738 iwarp_info->ll2_mpa_handle);
2739 if (rc)
2740 goto err;
2741
2742 iwarp_info->partial_fpdus = kcalloc((u16)p_hwfn->p_rdma_info->num_qps,
2743 sizeof(*iwarp_info->partial_fpdus),
2744 GFP_KERNEL);
2745 if (!iwarp_info->partial_fpdus)
2746 goto err;
2747
2748 iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps;
2749
2750 iwarp_info->mpa_intermediate_buf = kzalloc(buff_size, GFP_KERNEL);
2751 if (!iwarp_info->mpa_intermediate_buf)
2752 goto err;
2753
2754 /* The mpa_bufs array serves for pending RX packets received on the
2755 * mpa ll2 that don't have place on the tx ring and require later
2756 * processing. We can't fail on allocation of such a struct therefore
2757 * we allocate enough to take care of all rx packets
2758 */
2759 iwarp_info->mpa_bufs = kcalloc(data.input.rx_num_desc,
2760 sizeof(*iwarp_info->mpa_bufs),
2761 GFP_KERNEL);
2762 if (!iwarp_info->mpa_bufs)
2763 goto err;
2764
2765 INIT_LIST_HEAD(&iwarp_info->mpa_buf_pending_list);
2766 INIT_LIST_HEAD(&iwarp_info->mpa_buf_list);
2767 for (i = 0; i < data.input.rx_num_desc; i++)
2768 list_add_tail(&iwarp_info->mpa_bufs[i].list_entry,
2769 &iwarp_info->mpa_buf_list);
2770 return rc;
2771err:
2772 qed_iwarp_ll2_stop(p_hwfn);
2773
2774 return rc;
2775}
2776
2777static struct {
2778 u32 two_ports;
2779 u32 four_ports;
2780} qed_iwarp_rcv_wnd_size[MAX_CHIP_IDS] = {
2781 {QED_IWARP_RCV_WND_SIZE_DEF_BB_2P, QED_IWARP_RCV_WND_SIZE_DEF_BB_4P},
2782 {QED_IWARP_RCV_WND_SIZE_DEF_AH_2P, QED_IWARP_RCV_WND_SIZE_DEF_AH_4P}
2783};
2784
2785int qed_iwarp_setup(struct qed_hwfn *p_hwfn,
2786 struct qed_rdma_start_in_params *params)
2787{
2788 struct qed_dev *cdev = p_hwfn->cdev;
2789 struct qed_iwarp_info *iwarp_info;
2790 enum chip_ids chip_id;
2791 u32 rcv_wnd_size;
2792
2793 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2794
2795 iwarp_info->tcp_flags = QED_IWARP_TS_EN;
2796
2797 chip_id = QED_IS_BB(cdev) ? CHIP_BB : CHIP_K2;
2798 rcv_wnd_size = (qed_device_num_ports(cdev) == 4) ?
2799 qed_iwarp_rcv_wnd_size[chip_id].four_ports :
2800 qed_iwarp_rcv_wnd_size[chip_id].two_ports;
2801
2802 /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */
2803 iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) -
2804 ilog2(QED_IWARP_RCV_WND_SIZE_MIN);
2805 iwarp_info->rcv_wnd_size = rcv_wnd_size >> iwarp_info->rcv_wnd_scale;
2806 iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED;
2807 iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
2808
2809 iwarp_info->peer2peer = QED_IWARP_PARAM_P2P;
2810
2811 iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND |
2812 MPA_RTR_TYPE_ZERO_WRITE |
2813 MPA_RTR_TYPE_ZERO_READ;
2814
2815 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock);
2816 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list);
2817 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list);
2818
2819 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP,
2820 qed_iwarp_async_event);
2821 qed_ooo_setup(p_hwfn);
2822
2823 return qed_iwarp_ll2_start(p_hwfn, params, rcv_wnd_size);
2824}
2825
2826int qed_iwarp_stop(struct qed_hwfn *p_hwfn)
2827{
2828 int rc;
2829
2830 qed_iwarp_free_prealloc_ep(p_hwfn);
2831 rc = qed_iwarp_wait_for_all_cids(p_hwfn);
2832 if (rc)
2833 return rc;
2834
2835 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP);
2836
2837 return qed_iwarp_ll2_stop(p_hwfn);
2838}
2839
2840static void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn,
2841 struct qed_iwarp_ep *ep,
2842 u8 fw_return_code)
2843{
2844 struct qed_iwarp_cm_event_params params;
2845
2846 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_ERROR, true);
2847
2848 params.event = QED_IWARP_EVENT_CLOSE;
2849 params.ep_context = ep;
2850 params.cm_info = &ep->cm_info;
2851 params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ?
2852 0 : -ECONNRESET;
2853
2854 /* paired with READ_ONCE in destroy_qp */
2855 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
2856
2857 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2858 list_del(&ep->list_entry);
2859 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2860
2861 ep->event_cb(ep->cb_context, ¶ms);
2862}
2863
2864static void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn,
2865 struct qed_iwarp_ep *ep,
2866 int fw_ret_code)
2867{
2868 struct qed_iwarp_cm_event_params params;
2869 bool event_cb = false;
2870
2871 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n",
2872 ep->cid, fw_ret_code);
2873
2874 switch (fw_ret_code) {
2875 case IWARP_EXCEPTION_DETECTED_LLP_CLOSED:
2876 params.status = 0;
2877 params.event = QED_IWARP_EVENT_DISCONNECT;
2878 event_cb = true;
2879 break;
2880 case IWARP_EXCEPTION_DETECTED_LLP_RESET:
2881 params.status = -ECONNRESET;
2882 params.event = QED_IWARP_EVENT_DISCONNECT;
2883 event_cb = true;
2884 break;
2885 case IWARP_EXCEPTION_DETECTED_RQ_EMPTY:
2886 params.event = QED_IWARP_EVENT_RQ_EMPTY;
2887 event_cb = true;
2888 break;
2889 case IWARP_EXCEPTION_DETECTED_IRQ_FULL:
2890 params.event = QED_IWARP_EVENT_IRQ_FULL;
2891 event_cb = true;
2892 break;
2893 case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT:
2894 params.event = QED_IWARP_EVENT_LLP_TIMEOUT;
2895 event_cb = true;
2896 break;
2897 case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR:
2898 params.event = QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR;
2899 event_cb = true;
2900 break;
2901 case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW:
2902 params.event = QED_IWARP_EVENT_CQ_OVERFLOW;
2903 event_cb = true;
2904 break;
2905 case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC:
2906 params.event = QED_IWARP_EVENT_QP_CATASTROPHIC;
2907 event_cb = true;
2908 break;
2909 case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR:
2910 params.event = QED_IWARP_EVENT_LOCAL_ACCESS_ERROR;
2911 event_cb = true;
2912 break;
2913 case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR:
2914 params.event = QED_IWARP_EVENT_REMOTE_OPERATION_ERROR;
2915 event_cb = true;
2916 break;
2917 case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED:
2918 params.event = QED_IWARP_EVENT_TERMINATE_RECEIVED;
2919 event_cb = true;
2920 break;
2921 default:
2922 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2923 "Unhandled exception received...fw_ret_code=%d\n",
2924 fw_ret_code);
2925 break;
2926 }
2927
2928 if (event_cb) {
2929 params.ep_context = ep;
2930 params.cm_info = &ep->cm_info;
2931 ep->event_cb(ep->cb_context, ¶ms);
2932 }
2933}
2934
2935static void
2936qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn,
2937 struct qed_iwarp_ep *ep, u8 fw_return_code)
2938{
2939 struct qed_iwarp_cm_event_params params;
2940
2941 memset(¶ms, 0, sizeof(params));
2942 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
2943 params.ep_context = ep;
2944 params.cm_info = &ep->cm_info;
2945 /* paired with READ_ONCE in destroy_qp */
2946 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
2947
2948 switch (fw_return_code) {
2949 case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET:
2950 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2951 "%s(0x%x) TCP connect got invalid packet\n",
2952 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2953 params.status = -ECONNRESET;
2954 break;
2955 case IWARP_CONN_ERROR_TCP_CONNECTION_RST:
2956 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2957 "%s(0x%x) TCP Connection Reset\n",
2958 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2959 params.status = -ECONNRESET;
2960 break;
2961 case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT:
2962 DP_NOTICE(p_hwfn, "%s(0x%x) TCP timeout\n",
2963 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2964 params.status = -EBUSY;
2965 break;
2966 case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER:
2967 DP_NOTICE(p_hwfn, "%s(0x%x) MPA not supported VER\n",
2968 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2969 params.status = -ECONNREFUSED;
2970 break;
2971 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
2972 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
2973 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2974 params.status = -ECONNRESET;
2975 break;
2976 default:
2977 DP_ERR(p_hwfn,
2978 "%s(0x%x) Unexpected return code tcp connect: %d\n",
2979 QED_IWARP_CONNECT_MODE_STRING(ep),
2980 ep->tcp_cid, fw_return_code);
2981 params.status = -ECONNRESET;
2982 break;
2983 }
2984
2985 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
2986 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
2987 qed_iwarp_return_ep(p_hwfn, ep);
2988 } else {
2989 ep->event_cb(ep->cb_context, ¶ms);
2990 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2991 list_del(&ep->list_entry);
2992 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2993 }
2994}
2995
2996static void
2997qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn,
2998 struct qed_iwarp_ep *ep, u8 fw_return_code)
2999{
3000 u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
3001
3002 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
3003 /* Done with the SYN packet, post back to ll2 rx */
3004 qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle);
3005
3006 ep->syn = NULL;
3007
3008 /* If connect failed - upper layer doesn't know about it */
3009 if (fw_return_code == RDMA_RETURN_OK)
3010 qed_iwarp_mpa_received(p_hwfn, ep);
3011 else
3012 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
3013 fw_return_code);
3014 } else {
3015 if (fw_return_code == RDMA_RETURN_OK)
3016 qed_iwarp_mpa_offload(p_hwfn, ep);
3017 else
3018 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
3019 fw_return_code);
3020 }
3021}
3022
3023static inline bool
3024qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
3025{
3026 if (!ep || (ep->sig != QED_EP_SIG)) {
3027 DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep);
3028 return false;
3029 }
3030
3031 return true;
3032}
3033
3034static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
3035 u8 fw_event_code, u16 echo,
3036 union event_ring_data *data,
3037 u8 fw_return_code)
3038{
3039 struct qed_rdma_events events = p_hwfn->p_rdma_info->events;
3040 struct regpair *fw_handle = &data->rdma_data.async_handle;
3041 struct qed_iwarp_ep *ep = NULL;
3042 u16 srq_offset;
3043 u16 srq_id;
3044 u16 cid;
3045
3046 ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi,
3047 fw_handle->lo);
3048
3049 switch (fw_event_code) {
3050 case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE:
3051 /* Async completion after TCP 3-way handshake */
3052 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3053 return -EINVAL;
3054 DP_VERBOSE(p_hwfn,
3055 QED_MSG_RDMA,
3056 "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n",
3057 ep->tcp_cid, fw_return_code);
3058 qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code);
3059 break;
3060 case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED:
3061 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3062 return -EINVAL;
3063 DP_VERBOSE(p_hwfn,
3064 QED_MSG_RDMA,
3065 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n",
3066 ep->cid, fw_return_code);
3067 qed_iwarp_exception_received(p_hwfn, ep, fw_return_code);
3068 break;
3069 case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE:
3070 /* Async completion for Close Connection ramrod */
3071 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3072 return -EINVAL;
3073 DP_VERBOSE(p_hwfn,
3074 QED_MSG_RDMA,
3075 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n",
3076 ep->cid, fw_return_code);
3077 qed_iwarp_qp_in_error(p_hwfn, ep, fw_return_code);
3078 break;
3079 case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED:
3080 /* Async event for active side only */
3081 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3082 return -EINVAL;
3083 DP_VERBOSE(p_hwfn,
3084 QED_MSG_RDMA,
3085 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n",
3086 ep->cid, fw_return_code);
3087 qed_iwarp_mpa_reply_arrived(p_hwfn, ep);
3088 break;
3089 case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE:
3090 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3091 return -EINVAL;
3092 DP_VERBOSE(p_hwfn,
3093 QED_MSG_RDMA,
3094 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n",
3095 ep->cid, fw_return_code);
3096 qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code);
3097 break;
3098 case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED:
3099 cid = (u16)le32_to_cpu(fw_handle->lo);
3100 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
3101 "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid);
3102 qed_iwarp_cid_cleaned(p_hwfn, cid);
3103
3104 break;
3105 case IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY:
3106 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY\n");
3107 srq_offset = p_hwfn->p_rdma_info->srq_id_offset;
3108 /* FW assigns value that is no greater than u16 */
3109 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset;
3110 events.affiliated_event(events.context,
3111 QED_IWARP_EVENT_SRQ_EMPTY,
3112 &srq_id);
3113 break;
3114 case IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT:
3115 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT\n");
3116 srq_offset = p_hwfn->p_rdma_info->srq_id_offset;
3117 /* FW assigns value that is no greater than u16 */
3118 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset;
3119 events.affiliated_event(events.context,
3120 QED_IWARP_EVENT_SRQ_LIMIT,
3121 &srq_id);
3122 break;
3123 case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW:
3124 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n");
3125
3126 p_hwfn->p_rdma_info->events.affiliated_event(
3127 p_hwfn->p_rdma_info->events.context,
3128 QED_IWARP_EVENT_CQ_OVERFLOW,
3129 (void *)fw_handle);
3130 break;
3131 default:
3132 DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n",
3133 fw_event_code);
3134 return -EINVAL;
3135 }
3136 return 0;
3137}
3138
3139int
3140qed_iwarp_create_listen(void *rdma_cxt,
3141 struct qed_iwarp_listen_in *iparams,
3142 struct qed_iwarp_listen_out *oparams)
3143{
3144 struct qed_hwfn *p_hwfn = rdma_cxt;
3145 struct qed_iwarp_listener *listener;
3146
3147 listener = kzalloc(sizeof(*listener), GFP_KERNEL);
3148 if (!listener)
3149 return -ENOMEM;
3150
3151 listener->ip_version = iparams->ip_version;
3152 memcpy(listener->ip_addr, iparams->ip_addr, sizeof(listener->ip_addr));
3153 listener->port = iparams->port;
3154 listener->vlan = iparams->vlan;
3155
3156 listener->event_cb = iparams->event_cb;
3157 listener->cb_context = iparams->cb_context;
3158 listener->max_backlog = iparams->max_backlog;
3159 oparams->handle = listener;
3160
3161 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3162 list_add_tail(&listener->list_entry,
3163 &p_hwfn->p_rdma_info->iwarp.listen_list);
3164 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3165
3166 DP_VERBOSE(p_hwfn,
3167 QED_MSG_RDMA,
3168 "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n",
3169 listener->event_cb,
3170 listener,
3171 listener->ip_addr[0],
3172 listener->ip_addr[1],
3173 listener->ip_addr[2],
3174 listener->ip_addr[3], listener->port, listener->vlan);
3175
3176 return 0;
3177}
3178
3179int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle)
3180{
3181 struct qed_iwarp_listener *listener = handle;
3182 struct qed_hwfn *p_hwfn = rdma_cxt;
3183
3184 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "handle=%p\n", handle);
3185
3186 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3187 list_del(&listener->list_entry);
3188 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3189
3190 kfree(listener);
3191
3192 return 0;
3193}
3194
3195int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams)
3196{
3197 struct qed_hwfn *p_hwfn = rdma_cxt;
3198 struct qed_sp_init_data init_data;
3199 struct qed_spq_entry *p_ent;
3200 struct qed_iwarp_ep *ep;
3201 struct qed_rdma_qp *qp;
3202 int rc;
3203
3204 ep = iparams->ep_context;
3205 if (!ep) {
3206 DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n");
3207 return -EINVAL;
3208 }
3209
3210 qp = ep->qp;
3211
3212 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
3213 qp->icid, ep->tcp_cid);
3214
3215 memset(&init_data, 0, sizeof(init_data));
3216 init_data.cid = qp->icid;
3217 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
3218 init_data.comp_mode = QED_SPQ_MODE_CB;
3219
3220 rc = qed_sp_init_request(p_hwfn, &p_ent,
3221 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR,
3222 PROTOCOLID_IWARP, &init_data);
3223
3224 if (rc)
3225 return rc;
3226
3227 rc = qed_spq_post(p_hwfn, p_ent, NULL);
3228
3229 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc);
3230
3231 return rc;
3232}
3233
3234void
3235qed_iwarp_query_qp(struct qed_rdma_qp *qp,
3236 struct qed_rdma_query_qp_out_params *out_params)
3237{
3238 out_params->state = qed_iwarp2roce_state(qp->iwarp_state);
3239}