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7#include <linux/if_ether.h>
8#include <linux/if_vlan.h>
9#include <linux/ip.h>
10#include <linux/ipv6.h>
11#include <linux/spinlock.h>
12#include <linux/tcp.h>
13#include "qed_cxt.h"
14#include "qed_hw.h"
15#include "qed_ll2.h"
16#include "qed_rdma.h"
17#include "qed_reg_addr.h"
18#include "qed_sp.h"
19#include "qed_ooo.h"
20
21#define QED_IWARP_ORD_DEFAULT 32
22#define QED_IWARP_IRD_DEFAULT 32
23#define QED_IWARP_MAX_FW_MSS 4120
24
25#define QED_EP_SIG 0xecabcdef
26
27struct mpa_v2_hdr {
28 __be16 ird;
29 __be16 ord;
30};
31
32#define MPA_V2_PEER2PEER_MODEL 0x8000
33#define MPA_V2_SEND_RTR 0x4000
34#define MPA_V2_READ_RTR 0x4000
35#define MPA_V2_WRITE_RTR 0x8000
36#define MPA_V2_IRD_ORD_MASK 0x3FFF
37
38#define MPA_REV2(_mpa_rev) ((_mpa_rev) == MPA_NEGOTIATION_TYPE_ENHANCED)
39
40#define QED_IWARP_INVALID_TCP_CID 0xffffffff
41
42#define QED_IWARP_RCV_WND_SIZE_DEF_BB_2P (200 * 1024)
43#define QED_IWARP_RCV_WND_SIZE_DEF_BB_4P (100 * 1024)
44#define QED_IWARP_RCV_WND_SIZE_DEF_AH_2P (150 * 1024)
45#define QED_IWARP_RCV_WND_SIZE_DEF_AH_4P (90 * 1024)
46
47#define QED_IWARP_RCV_WND_SIZE_MIN (0xffff)
48#define TIMESTAMP_HEADER_SIZE (12)
49#define QED_IWARP_MAX_FIN_RT_DEFAULT (2)
50
51#define QED_IWARP_TS_EN BIT(0)
52#define QED_IWARP_DA_EN BIT(1)
53#define QED_IWARP_PARAM_CRC_NEEDED (1)
54#define QED_IWARP_PARAM_P2P (1)
55
56#define QED_IWARP_DEF_MAX_RT_TIME (0)
57#define QED_IWARP_DEF_CWND_FACTOR (4)
58#define QED_IWARP_DEF_KA_MAX_PROBE_CNT (5)
59#define QED_IWARP_DEF_KA_TIMEOUT (1200000)
60#define QED_IWARP_DEF_KA_INTERVAL (1000)
61
62static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
63 __le16 echo, union event_ring_data *data,
64 u8 fw_return_code);
65
66
67void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn)
68{
69 struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;
70
71 dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE;
72 dev->max_qp = min_t(u32,
73 IWARP_MAX_QPS,
74 p_hwfn->p_rdma_info->num_qps) -
75 QED_IWARP_PREALLOC_CNT;
76
77 dev->max_cq = dev->max_qp;
78
79 dev->max_qp_resp_rd_atomic_resc = QED_IWARP_IRD_DEFAULT;
80 dev->max_qp_req_rd_atomic_resc = QED_IWARP_ORD_DEFAULT;
81}
82
83void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
84{
85 p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP;
86 qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1);
87 p_hwfn->b_rdma_enabled_in_prs = true;
88}
89
90
91
92
93
94static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid)
95{
96 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
97
98 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
99
100 if (cid < QED_IWARP_PREALLOC_CNT)
101 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
102 cid);
103 else
104 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
105
106 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
107}
108
109void
110qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
111 struct iwarp_init_func_ramrod_data *p_ramrod)
112{
113 p_ramrod->iwarp.ll2_ooo_q_index =
114 RESC_START(p_hwfn, QED_LL2_RAM_QUEUE) +
115 p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle;
116
117 p_ramrod->tcp.max_fin_rt = QED_IWARP_MAX_FIN_RT_DEFAULT;
118
119 return;
120}
121
122static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid)
123{
124 int rc;
125
126 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
127 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
128 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
129 if (rc) {
130 DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n");
131 return rc;
132 }
133 *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
134
135 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid);
136 if (rc)
137 qed_iwarp_cid_cleaned(p_hwfn, *cid);
138
139 return rc;
140}
141
142static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid)
143{
144 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
145
146 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
147 qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid);
148 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
149}
150
151
152
153
154
155
156static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid)
157{
158 int rc;
159
160 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
161
162 rc = qed_rdma_bmap_alloc_id(p_hwfn,
163 &p_hwfn->p_rdma_info->tcp_cid_map, cid);
164
165 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
166
167 if (rc) {
168 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
169 "can't allocate iwarp tcp cid max-count=%d\n",
170 p_hwfn->p_rdma_info->tcp_cid_map.max_count);
171
172 *cid = QED_IWARP_INVALID_TCP_CID;
173 return rc;
174 }
175
176 *cid += qed_cxt_get_proto_cid_start(p_hwfn,
177 p_hwfn->p_rdma_info->proto);
178 return 0;
179}
180
181int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
182 struct qed_rdma_qp *qp,
183 struct qed_rdma_create_qp_out_params *out_params)
184{
185 struct iwarp_create_qp_ramrod_data *p_ramrod;
186 struct qed_sp_init_data init_data;
187 struct qed_spq_entry *p_ent;
188 u16 physical_queue;
189 u32 cid;
190 int rc;
191
192 qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
193 IWARP_SHARED_QUEUE_PAGE_SIZE,
194 &qp->shared_queue_phys_addr,
195 GFP_KERNEL);
196 if (!qp->shared_queue)
197 return -ENOMEM;
198
199 out_params->sq_pbl_virt = (u8 *)qp->shared_queue +
200 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
201 out_params->sq_pbl_phys = qp->shared_queue_phys_addr +
202 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
203 out_params->rq_pbl_virt = (u8 *)qp->shared_queue +
204 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
205 out_params->rq_pbl_phys = qp->shared_queue_phys_addr +
206 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
207
208 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
209 if (rc)
210 goto err1;
211
212 qp->icid = (u16)cid;
213
214 memset(&init_data, 0, sizeof(init_data));
215 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
216 init_data.cid = qp->icid;
217 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
218
219 rc = qed_sp_init_request(p_hwfn, &p_ent,
220 IWARP_RAMROD_CMD_ID_CREATE_QP,
221 PROTOCOLID_IWARP, &init_data);
222 if (rc)
223 goto err2;
224
225 p_ramrod = &p_ent->ramrod.iwarp_create_qp;
226
227 SET_FIELD(p_ramrod->flags,
228 IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN,
229 qp->fmr_and_reserved_lkey);
230
231 SET_FIELD(p_ramrod->flags,
232 IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all);
233
234 SET_FIELD(p_ramrod->flags,
235 IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN,
236 qp->incoming_rdma_read_en);
237
238 SET_FIELD(p_ramrod->flags,
239 IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN,
240 qp->incoming_rdma_write_en);
241
242 SET_FIELD(p_ramrod->flags,
243 IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN,
244 qp->incoming_atomic_en);
245
246 SET_FIELD(p_ramrod->flags,
247 IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq);
248
249 p_ramrod->pd = cpu_to_le16(qp->pd);
250 p_ramrod->sq_num_pages = cpu_to_le16(qp->sq_num_pages);
251 p_ramrod->rq_num_pages = cpu_to_le16(qp->rq_num_pages);
252
253 p_ramrod->srq_id.srq_idx = cpu_to_le16(qp->srq_id);
254 p_ramrod->srq_id.opaque_fid = cpu_to_le16(p_hwfn->hw_info.opaque_fid);
255 p_ramrod->qp_handle_for_cqe.hi = qp->qp_handle.hi;
256 p_ramrod->qp_handle_for_cqe.lo = qp->qp_handle.lo;
257
258 p_ramrod->cq_cid_for_sq =
259 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id);
260 p_ramrod->cq_cid_for_rq =
261 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id);
262
263 p_ramrod->dpi = cpu_to_le16(qp->dpi);
264
265 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
266 p_ramrod->physical_q0 = cpu_to_le16(physical_queue);
267 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
268 p_ramrod->physical_q1 = cpu_to_le16(physical_queue);
269
270 rc = qed_spq_post(p_hwfn, p_ent, NULL);
271 if (rc)
272 goto err2;
273
274 return rc;
275
276err2:
277 qed_iwarp_cid_cleaned(p_hwfn, cid);
278err1:
279 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
280 IWARP_SHARED_QUEUE_PAGE_SIZE,
281 qp->shared_queue, qp->shared_queue_phys_addr);
282
283 return rc;
284}
285
286static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
287{
288 struct iwarp_modify_qp_ramrod_data *p_ramrod;
289 struct qed_sp_init_data init_data;
290 struct qed_spq_entry *p_ent;
291 u16 flags, trans_to_state;
292 int rc;
293
294
295 memset(&init_data, 0, sizeof(init_data));
296 init_data.cid = qp->icid;
297 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
298 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
299
300 rc = qed_sp_init_request(p_hwfn, &p_ent,
301 IWARP_RAMROD_CMD_ID_MODIFY_QP,
302 p_hwfn->p_rdma_info->proto, &init_data);
303 if (rc)
304 return rc;
305
306 p_ramrod = &p_ent->ramrod.iwarp_modify_qp;
307
308 flags = le16_to_cpu(p_ramrod->flags);
309 SET_FIELD(flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN, 0x1);
310 p_ramrod->flags = cpu_to_le16(flags);
311
312 if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING)
313 trans_to_state = IWARP_MODIFY_QP_STATE_CLOSING;
314 else
315 trans_to_state = IWARP_MODIFY_QP_STATE_ERROR;
316
317 p_ramrod->transition_to_state = cpu_to_le16(trans_to_state);
318
319 rc = qed_spq_post(p_hwfn, p_ent, NULL);
320
321 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc);
322
323 return rc;
324}
325
326enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state)
327{
328 switch (state) {
329 case QED_ROCE_QP_STATE_RESET:
330 case QED_ROCE_QP_STATE_INIT:
331 case QED_ROCE_QP_STATE_RTR:
332 return QED_IWARP_QP_STATE_IDLE;
333 case QED_ROCE_QP_STATE_RTS:
334 return QED_IWARP_QP_STATE_RTS;
335 case QED_ROCE_QP_STATE_SQD:
336 return QED_IWARP_QP_STATE_CLOSING;
337 case QED_ROCE_QP_STATE_ERR:
338 return QED_IWARP_QP_STATE_ERROR;
339 case QED_ROCE_QP_STATE_SQE:
340 return QED_IWARP_QP_STATE_TERMINATE;
341 default:
342 return QED_IWARP_QP_STATE_ERROR;
343 }
344}
345
346static enum qed_roce_qp_state
347qed_iwarp2roce_state(enum qed_iwarp_qp_state state)
348{
349 switch (state) {
350 case QED_IWARP_QP_STATE_IDLE:
351 return QED_ROCE_QP_STATE_INIT;
352 case QED_IWARP_QP_STATE_RTS:
353 return QED_ROCE_QP_STATE_RTS;
354 case QED_IWARP_QP_STATE_TERMINATE:
355 return QED_ROCE_QP_STATE_SQE;
356 case QED_IWARP_QP_STATE_CLOSING:
357 return QED_ROCE_QP_STATE_SQD;
358 case QED_IWARP_QP_STATE_ERROR:
359 return QED_ROCE_QP_STATE_ERR;
360 default:
361 return QED_ROCE_QP_STATE_ERR;
362 }
363}
364
365static const char * const iwarp_state_names[] = {
366 "IDLE",
367 "RTS",
368 "TERMINATE",
369 "CLOSING",
370 "ERROR",
371};
372
373int
374qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn,
375 struct qed_rdma_qp *qp,
376 enum qed_iwarp_qp_state new_state, bool internal)
377{
378 enum qed_iwarp_qp_state prev_iw_state;
379 bool modify_fw = false;
380 int rc = 0;
381
382
383
384
385 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
386 prev_iw_state = qp->iwarp_state;
387
388 if (prev_iw_state == new_state) {
389 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
390 return 0;
391 }
392
393 switch (prev_iw_state) {
394 case QED_IWARP_QP_STATE_IDLE:
395 switch (new_state) {
396 case QED_IWARP_QP_STATE_RTS:
397 qp->iwarp_state = QED_IWARP_QP_STATE_RTS;
398 break;
399 case QED_IWARP_QP_STATE_ERROR:
400 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
401 if (!internal)
402 modify_fw = true;
403 break;
404 default:
405 break;
406 }
407 break;
408 case QED_IWARP_QP_STATE_RTS:
409 switch (new_state) {
410 case QED_IWARP_QP_STATE_CLOSING:
411 if (!internal)
412 modify_fw = true;
413
414 qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING;
415 break;
416 case QED_IWARP_QP_STATE_ERROR:
417 if (!internal)
418 modify_fw = true;
419 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
420 break;
421 default:
422 break;
423 }
424 break;
425 case QED_IWARP_QP_STATE_ERROR:
426 switch (new_state) {
427 case QED_IWARP_QP_STATE_IDLE:
428
429 qp->iwarp_state = new_state;
430 break;
431 case QED_IWARP_QP_STATE_CLOSING:
432
433 break;
434 default:
435 rc = -EINVAL;
436 }
437 break;
438 case QED_IWARP_QP_STATE_TERMINATE:
439 case QED_IWARP_QP_STATE_CLOSING:
440 qp->iwarp_state = new_state;
441 break;
442 default:
443 break;
444 }
445
446 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n",
447 qp->icid,
448 iwarp_state_names[prev_iw_state],
449 iwarp_state_names[qp->iwarp_state],
450 internal ? "internal" : "");
451
452 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
453
454 if (modify_fw)
455 rc = qed_iwarp_modify_fw(p_hwfn, qp);
456
457 return rc;
458}
459
460int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
461{
462 struct qed_sp_init_data init_data;
463 struct qed_spq_entry *p_ent;
464 int rc;
465
466
467 memset(&init_data, 0, sizeof(init_data));
468 init_data.cid = qp->icid;
469 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
470 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
471
472 rc = qed_sp_init_request(p_hwfn, &p_ent,
473 IWARP_RAMROD_CMD_ID_DESTROY_QP,
474 p_hwfn->p_rdma_info->proto, &init_data);
475 if (rc)
476 return rc;
477
478 rc = qed_spq_post(p_hwfn, p_ent, NULL);
479
480 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc);
481
482 return rc;
483}
484
485static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn,
486 struct qed_iwarp_ep *ep,
487 bool remove_from_active_list)
488{
489 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
490 sizeof(*ep->ep_buffer_virt),
491 ep->ep_buffer_virt, ep->ep_buffer_phys);
492
493 if (remove_from_active_list) {
494 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
495 list_del(&ep->list_entry);
496 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
497 }
498
499 if (ep->qp)
500 ep->qp->ep = NULL;
501
502 kfree(ep);
503}
504
505int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
506{
507 struct qed_iwarp_ep *ep = qp->ep;
508 int wait_count = 0;
509 int rc = 0;
510
511 if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) {
512 rc = qed_iwarp_modify_qp(p_hwfn, qp,
513 QED_IWARP_QP_STATE_ERROR, false);
514 if (rc)
515 return rc;
516 }
517
518
519 if (ep) {
520 while (READ_ONCE(ep->state) != QED_IWARP_EP_CLOSED &&
521 wait_count++ < 200)
522 msleep(100);
523
524 if (ep->state != QED_IWARP_EP_CLOSED)
525 DP_NOTICE(p_hwfn, "ep state close timeout state=%x\n",
526 ep->state);
527
528 qed_iwarp_destroy_ep(p_hwfn, ep, false);
529 }
530
531 rc = qed_iwarp_fw_destroy(p_hwfn, qp);
532
533 if (qp->shared_queue)
534 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
535 IWARP_SHARED_QUEUE_PAGE_SIZE,
536 qp->shared_queue, qp->shared_queue_phys_addr);
537
538 return rc;
539}
540
541static int
542qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out)
543{
544 struct qed_iwarp_ep *ep;
545 int rc;
546
547 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
548 if (!ep)
549 return -ENOMEM;
550
551 ep->state = QED_IWARP_EP_INIT;
552
553 ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
554 sizeof(*ep->ep_buffer_virt),
555 &ep->ep_buffer_phys,
556 GFP_KERNEL);
557 if (!ep->ep_buffer_virt) {
558 rc = -ENOMEM;
559 goto err;
560 }
561
562 ep->sig = QED_EP_SIG;
563
564 *ep_out = ep;
565
566 return 0;
567
568err:
569 kfree(ep);
570 return rc;
571}
572
573static void
574qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn,
575 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod)
576{
577 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n",
578 p_tcp_ramrod->tcp.local_mac_addr_lo,
579 p_tcp_ramrod->tcp.local_mac_addr_mid,
580 p_tcp_ramrod->tcp.local_mac_addr_hi,
581 p_tcp_ramrod->tcp.remote_mac_addr_lo,
582 p_tcp_ramrod->tcp.remote_mac_addr_mid,
583 p_tcp_ramrod->tcp.remote_mac_addr_hi);
584
585 if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) {
586 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
587 "local_ip=%pI4h:%x, remote_ip=%pI4h:%x, vlan=%x\n",
588 p_tcp_ramrod->tcp.local_ip,
589 p_tcp_ramrod->tcp.local_port,
590 p_tcp_ramrod->tcp.remote_ip,
591 p_tcp_ramrod->tcp.remote_port,
592 p_tcp_ramrod->tcp.vlan_id);
593 } else {
594 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
595 "local_ip=%pI6:%x, remote_ip=%pI6:%x, vlan=%x\n",
596 p_tcp_ramrod->tcp.local_ip,
597 p_tcp_ramrod->tcp.local_port,
598 p_tcp_ramrod->tcp.remote_ip,
599 p_tcp_ramrod->tcp.remote_port,
600 p_tcp_ramrod->tcp.vlan_id);
601 }
602
603 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
604 "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n",
605 p_tcp_ramrod->tcp.flow_label,
606 p_tcp_ramrod->tcp.ttl,
607 p_tcp_ramrod->tcp.tos_or_tc,
608 p_tcp_ramrod->tcp.mss,
609 p_tcp_ramrod->tcp.rcv_wnd_scale,
610 p_tcp_ramrod->tcp.connect_mode,
611 p_tcp_ramrod->tcp.flags);
612
613 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n",
614 p_tcp_ramrod->tcp.syn_ip_payload_length,
615 p_tcp_ramrod->tcp.syn_phy_addr_lo,
616 p_tcp_ramrod->tcp.syn_phy_addr_hi);
617}
618
619static int
620qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
621{
622 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
623 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod;
624 struct tcp_offload_params_opt2 *tcp;
625 struct qed_sp_init_data init_data;
626 struct qed_spq_entry *p_ent;
627 dma_addr_t async_output_phys;
628 dma_addr_t in_pdata_phys;
629 u16 physical_q;
630 u16 flags = 0;
631 u8 tcp_flags;
632 int rc;
633 int i;
634
635 memset(&init_data, 0, sizeof(init_data));
636 init_data.cid = ep->tcp_cid;
637 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
638 if (ep->connect_mode == TCP_CONNECT_PASSIVE)
639 init_data.comp_mode = QED_SPQ_MODE_CB;
640 else
641 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
642
643 rc = qed_sp_init_request(p_hwfn, &p_ent,
644 IWARP_RAMROD_CMD_ID_TCP_OFFLOAD,
645 PROTOCOLID_IWARP, &init_data);
646 if (rc)
647 return rc;
648
649 p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload;
650
651 in_pdata_phys = ep->ep_buffer_phys +
652 offsetof(struct qed_iwarp_ep_memory, in_pdata);
653 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr,
654 in_pdata_phys);
655
656 p_tcp_ramrod->iwarp.incoming_ulp_buffer.len =
657 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
658
659 async_output_phys = ep->ep_buffer_phys +
660 offsetof(struct qed_iwarp_ep_memory, async_output);
661 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf,
662 async_output_phys);
663
664 p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
665 p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
666
667 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
668 p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q);
669 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
670 p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q);
671 p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev;
672
673 tcp = &p_tcp_ramrod->tcp;
674 qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi,
675 &tcp->remote_mac_addr_mid,
676 &tcp->remote_mac_addr_lo, ep->remote_mac_addr);
677 qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid,
678 &tcp->local_mac_addr_lo, ep->local_mac_addr);
679
680 tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan);
681
682 tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags;
683
684 SET_FIELD(flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN,
685 !!(tcp_flags & QED_IWARP_TS_EN));
686
687 SET_FIELD(flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN,
688 !!(tcp_flags & QED_IWARP_DA_EN));
689
690 tcp->flags = cpu_to_le16(flags);
691 tcp->ip_version = ep->cm_info.ip_version;
692
693 for (i = 0; i < 4; i++) {
694 tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]);
695 tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]);
696 }
697
698 tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port);
699 tcp->local_port = cpu_to_le16(ep->cm_info.local_port);
700 tcp->mss = cpu_to_le16(ep->mss);
701 tcp->flow_label = 0;
702 tcp->ttl = 0x40;
703 tcp->tos_or_tc = 0;
704
705 tcp->max_rt_time = QED_IWARP_DEF_MAX_RT_TIME;
706 tcp->cwnd = cpu_to_le32(QED_IWARP_DEF_CWND_FACTOR * ep->mss);
707 tcp->ka_max_probe_cnt = QED_IWARP_DEF_KA_MAX_PROBE_CNT;
708 tcp->ka_timeout = cpu_to_le32(QED_IWARP_DEF_KA_TIMEOUT);
709 tcp->ka_interval = cpu_to_le32(QED_IWARP_DEF_KA_INTERVAL);
710
711 tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale;
712 tcp->connect_mode = ep->connect_mode;
713
714 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
715 tcp->syn_ip_payload_length =
716 cpu_to_le16(ep->syn_ip_payload_length);
717 tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr);
718 tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr);
719 }
720
721 qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod);
722
723 rc = qed_spq_post(p_hwfn, p_ent, NULL);
724
725 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
726 "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc);
727
728 return rc;
729}
730
731static void
732qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
733{
734 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
735 struct qed_iwarp_cm_event_params params;
736 struct mpa_v2_hdr *mpa_v2;
737 union async_output *async_data;
738 u16 mpa_ord, mpa_ird;
739 u8 mpa_hdr_size = 0;
740 u16 ulp_data_len;
741 u8 mpa_rev;
742
743 async_data = &ep->ep_buffer_virt->async_output;
744
745 mpa_rev = async_data->mpa_request.mpa_handshake_mode;
746 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
747 "private_data_len=%x handshake_mode=%x private_data=(%x)\n",
748 async_data->mpa_request.ulp_data_len,
749 mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata)));
750
751 if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
752
753 mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata;
754 mpa_hdr_size = sizeof(*mpa_v2);
755
756 mpa_ord = ntohs(mpa_v2->ord);
757 mpa_ird = ntohs(mpa_v2->ird);
758
759
760
761
762 ep->cm_info.ord = (u8)min_t(u16,
763 (mpa_ord & MPA_V2_IRD_ORD_MASK),
764 QED_IWARP_ORD_DEFAULT);
765
766 ep->cm_info.ird = (u8)min_t(u16,
767 (mpa_ird & MPA_V2_IRD_ORD_MASK),
768 QED_IWARP_IRD_DEFAULT);
769
770
771 ep->rtr_type = MPA_RTR_TYPE_NONE;
772 if (mpa_ird & MPA_V2_PEER2PEER_MODEL) {
773 if (mpa_ord & MPA_V2_WRITE_RTR)
774 ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE;
775
776 if (mpa_ord & MPA_V2_READ_RTR)
777 ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ;
778
779 if (mpa_ird & MPA_V2_SEND_RTR)
780 ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND;
781
782 ep->rtr_type &= iwarp_info->rtr_type;
783
784
785 if (ep->rtr_type == MPA_RTR_TYPE_NONE)
786 ep->rtr_type = iwarp_info->rtr_type;
787 }
788
789 ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
790 } else {
791 ep->cm_info.ord = QED_IWARP_ORD_DEFAULT;
792 ep->cm_info.ird = QED_IWARP_IRD_DEFAULT;
793 ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC;
794 }
795
796 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
797 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n",
798 mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type,
799 async_data->mpa_request.ulp_data_len, mpa_hdr_size);
800
801
802 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size;
803
804 ulp_data_len = le16_to_cpu(async_data->mpa_request.ulp_data_len);
805 ep->cm_info.private_data_len = ulp_data_len - mpa_hdr_size;
806
807 params.event = QED_IWARP_EVENT_MPA_REQUEST;
808 params.cm_info = &ep->cm_info;
809 params.ep_context = ep;
810 params.status = 0;
811
812 ep->state = QED_IWARP_EP_MPA_REQ_RCVD;
813 ep->event_cb(ep->cb_context, ¶ms);
814}
815
816static int
817qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
818{
819 struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod;
820 struct mpa_outgoing_params *common;
821 struct qed_iwarp_info *iwarp_info;
822 struct qed_sp_init_data init_data;
823 dma_addr_t async_output_phys;
824 struct qed_spq_entry *p_ent;
825 dma_addr_t out_pdata_phys;
826 dma_addr_t in_pdata_phys;
827 struct qed_rdma_qp *qp;
828 bool reject;
829 u32 val;
830 int rc;
831
832 if (!ep)
833 return -EINVAL;
834
835 qp = ep->qp;
836 reject = !qp;
837
838 memset(&init_data, 0, sizeof(init_data));
839 init_data.cid = reject ? ep->tcp_cid : qp->icid;
840 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
841
842 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
843 init_data.comp_mode = QED_SPQ_MODE_CB;
844 else
845 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
846
847 rc = qed_sp_init_request(p_hwfn, &p_ent,
848 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD,
849 PROTOCOLID_IWARP, &init_data);
850 if (rc)
851 return rc;
852
853 p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload;
854 common = &p_mpa_ramrod->common;
855
856 out_pdata_phys = ep->ep_buffer_phys +
857 offsetof(struct qed_iwarp_ep_memory, out_pdata);
858 DMA_REGPAIR_LE(common->outgoing_ulp_buffer.addr, out_pdata_phys);
859
860 val = ep->cm_info.private_data_len;
861 common->outgoing_ulp_buffer.len = cpu_to_le16(val);
862 common->crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed;
863
864 common->out_rq.ord = cpu_to_le32(ep->cm_info.ord);
865 common->out_rq.ird = cpu_to_le32(ep->cm_info.ird);
866
867 val = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid;
868 p_mpa_ramrod->tcp_cid = cpu_to_le32(val);
869
870 in_pdata_phys = ep->ep_buffer_phys +
871 offsetof(struct qed_iwarp_ep_memory, in_pdata);
872 p_mpa_ramrod->tcp_connect_side = ep->connect_mode;
873 DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr,
874 in_pdata_phys);
875 p_mpa_ramrod->incoming_ulp_buffer.len =
876 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
877 async_output_phys = ep->ep_buffer_phys +
878 offsetof(struct qed_iwarp_ep_memory, async_output);
879 DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf,
880 async_output_phys);
881 p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
882 p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
883
884 if (!reject) {
885 DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr,
886 qp->shared_queue_phys_addr);
887 p_mpa_ramrod->stats_counter_id =
888 RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue;
889 } else {
890 common->reject = 1;
891 }
892
893 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
894 p_mpa_ramrod->rcv_wnd = cpu_to_le16(iwarp_info->rcv_wnd_size);
895 p_mpa_ramrod->mode = ep->mpa_rev;
896 SET_FIELD(p_mpa_ramrod->rtr_pref,
897 IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type);
898
899 ep->state = QED_IWARP_EP_MPA_OFFLOADED;
900 rc = qed_spq_post(p_hwfn, p_ent, NULL);
901 if (!reject)
902 ep->cid = qp->icid;
903
904 DP_VERBOSE(p_hwfn,
905 QED_MSG_RDMA,
906 "QP(0x%x) EP(0x%x) MPA Offload rc = %d IRD=0x%x ORD=0x%x rtr_type=%d mpa_rev=%d reject=%d\n",
907 reject ? 0xffff : qp->icid,
908 ep->tcp_cid,
909 rc,
910 ep->cm_info.ird,
911 ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject);
912 return rc;
913}
914
915static void
916qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
917{
918 ep->state = QED_IWARP_EP_INIT;
919 if (ep->qp)
920 ep->qp->ep = NULL;
921 ep->qp = NULL;
922 memset(&ep->cm_info, 0, sizeof(ep->cm_info));
923
924 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
925
926
927
928 qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
929 }
930 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
931
932 list_move_tail(&ep->list_entry,
933 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
934
935 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
936}
937
938static void
939qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
940{
941 struct mpa_v2_hdr *mpa_v2_params;
942 union async_output *async_data;
943 u16 mpa_ird, mpa_ord;
944 u8 mpa_data_size = 0;
945 u16 ulp_data_len;
946
947 if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) {
948 mpa_v2_params =
949 (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata);
950 mpa_data_size = sizeof(*mpa_v2_params);
951 mpa_ird = ntohs(mpa_v2_params->ird);
952 mpa_ord = ntohs(mpa_v2_params->ord);
953
954 ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK);
955 ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK);
956 }
957
958 async_data = &ep->ep_buffer_virt->async_output;
959 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size;
960
961 ulp_data_len = le16_to_cpu(async_data->mpa_response.ulp_data_len);
962 ep->cm_info.private_data_len = ulp_data_len - mpa_data_size;
963}
964
965static void
966qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
967{
968 struct qed_iwarp_cm_event_params params;
969
970 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
971 DP_NOTICE(p_hwfn,
972 "MPA reply event not expected on passive side!\n");
973 return;
974 }
975
976 params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY;
977
978 qed_iwarp_parse_private_data(p_hwfn, ep);
979
980 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
981 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
982 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
983
984 params.cm_info = &ep->cm_info;
985 params.ep_context = ep;
986 params.status = 0;
987
988 ep->mpa_reply_processed = true;
989
990 ep->event_cb(ep->cb_context, ¶ms);
991}
992
993#define QED_IWARP_CONNECT_MODE_STRING(ep) \
994 ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active"
995
996
997
998
999static void
1000qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn,
1001 struct qed_iwarp_ep *ep, u8 fw_return_code)
1002{
1003 struct qed_iwarp_cm_event_params params;
1004
1005 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
1006 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
1007 else
1008 params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE;
1009
1010 if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed)
1011 qed_iwarp_parse_private_data(p_hwfn, ep);
1012
1013 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1014 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
1015 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
1016
1017 params.cm_info = &ep->cm_info;
1018
1019 params.ep_context = ep;
1020
1021 switch (fw_return_code) {
1022 case RDMA_RETURN_OK:
1023 ep->qp->max_rd_atomic_req = ep->cm_info.ord;
1024 ep->qp->max_rd_atomic_resp = ep->cm_info.ird;
1025 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1);
1026 ep->state = QED_IWARP_EP_ESTABLISHED;
1027 params.status = 0;
1028 break;
1029 case IWARP_CONN_ERROR_MPA_TIMEOUT:
1030 DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n",
1031 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1032 params.status = -EBUSY;
1033 break;
1034 case IWARP_CONN_ERROR_MPA_ERROR_REJECT:
1035 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n",
1036 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1037 params.status = -ECONNREFUSED;
1038 break;
1039 case IWARP_CONN_ERROR_MPA_RST:
1040 DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n",
1041 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid,
1042 ep->tcp_cid);
1043 params.status = -ECONNRESET;
1044 break;
1045 case IWARP_CONN_ERROR_MPA_FIN:
1046 DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n",
1047 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1048 params.status = -ECONNREFUSED;
1049 break;
1050 case IWARP_CONN_ERROR_MPA_INSUF_IRD:
1051 DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n",
1052 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1053 params.status = -ECONNREFUSED;
1054 break;
1055 case IWARP_CONN_ERROR_MPA_RTR_MISMATCH:
1056 DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n",
1057 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1058 params.status = -ECONNREFUSED;
1059 break;
1060 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
1061 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
1062 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1063 params.status = -ECONNREFUSED;
1064 break;
1065 case IWARP_CONN_ERROR_MPA_LOCAL_ERROR:
1066 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n",
1067 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1068 params.status = -ECONNREFUSED;
1069 break;
1070 case IWARP_CONN_ERROR_MPA_TERMINATE:
1071 DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n",
1072 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1073 params.status = -ECONNREFUSED;
1074 break;
1075 default:
1076 params.status = -ECONNRESET;
1077 break;
1078 }
1079
1080 if (fw_return_code != RDMA_RETURN_OK)
1081
1082 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
1083
1084 ep->event_cb(ep->cb_context, ¶ms);
1085
1086
1087
1088
1089
1090
1091 if (fw_return_code != RDMA_RETURN_OK) {
1092 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1093 if ((ep->connect_mode == TCP_CONNECT_PASSIVE) &&
1094 (!ep->qp)) {
1095 qed_iwarp_return_ep(p_hwfn, ep);
1096 } else {
1097 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1098 list_del(&ep->list_entry);
1099 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1100 }
1101 }
1102}
1103
1104static void
1105qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn,
1106 struct qed_iwarp_ep *ep, u8 *mpa_data_size)
1107{
1108 struct mpa_v2_hdr *mpa_v2_params;
1109 u16 mpa_ird, mpa_ord;
1110
1111 *mpa_data_size = 0;
1112 if (MPA_REV2(ep->mpa_rev)) {
1113 mpa_v2_params =
1114 (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata;
1115 *mpa_data_size = sizeof(*mpa_v2_params);
1116
1117 mpa_ird = (u16)ep->cm_info.ird;
1118 mpa_ord = (u16)ep->cm_info.ord;
1119
1120 if (ep->rtr_type != MPA_RTR_TYPE_NONE) {
1121 mpa_ird |= MPA_V2_PEER2PEER_MODEL;
1122
1123 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND)
1124 mpa_ird |= MPA_V2_SEND_RTR;
1125
1126 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE)
1127 mpa_ord |= MPA_V2_WRITE_RTR;
1128
1129 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ)
1130 mpa_ord |= MPA_V2_READ_RTR;
1131 }
1132
1133 mpa_v2_params->ird = htons(mpa_ird);
1134 mpa_v2_params->ord = htons(mpa_ord);
1135
1136 DP_VERBOSE(p_hwfn,
1137 QED_MSG_RDMA,
1138 "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n",
1139 mpa_v2_params->ird,
1140 mpa_v2_params->ord,
1141 *((u32 *)mpa_v2_params),
1142 mpa_ord & MPA_V2_IRD_ORD_MASK,
1143 mpa_ird & MPA_V2_IRD_ORD_MASK,
1144 !!(mpa_ird & MPA_V2_PEER2PEER_MODEL),
1145 !!(mpa_ird & MPA_V2_SEND_RTR),
1146 !!(mpa_ord & MPA_V2_WRITE_RTR),
1147 !!(mpa_ord & MPA_V2_READ_RTR));
1148 }
1149}
1150
1151int qed_iwarp_connect(void *rdma_cxt,
1152 struct qed_iwarp_connect_in *iparams,
1153 struct qed_iwarp_connect_out *oparams)
1154{
1155 struct qed_hwfn *p_hwfn = rdma_cxt;
1156 struct qed_iwarp_info *iwarp_info;
1157 struct qed_iwarp_ep *ep;
1158 u8 mpa_data_size = 0;
1159 u32 cid;
1160 int rc;
1161
1162 if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) ||
1163 (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) {
1164 DP_NOTICE(p_hwfn,
1165 "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1166 iparams->qp->icid, iparams->cm_info.ord,
1167 iparams->cm_info.ird);
1168
1169 return -EINVAL;
1170 }
1171
1172 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1173
1174
1175 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1176 if (rc)
1177 return rc;
1178
1179 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1180 if (rc)
1181 goto err;
1182
1183 ep->tcp_cid = cid;
1184
1185 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1186 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
1187 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1188
1189 ep->qp = iparams->qp;
1190 ep->qp->ep = ep;
1191 ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr);
1192 ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr);
1193 memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info));
1194
1195 ep->cm_info.ord = iparams->cm_info.ord;
1196 ep->cm_info.ird = iparams->cm_info.ird;
1197
1198 ep->rtr_type = iwarp_info->rtr_type;
1199 if (!iwarp_info->peer2peer)
1200 ep->rtr_type = MPA_RTR_TYPE_NONE;
1201
1202 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0))
1203 ep->cm_info.ord = 1;
1204
1205 ep->mpa_rev = iwarp_info->mpa_rev;
1206
1207 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1208
1209 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1210 ep->cm_info.private_data_len = iparams->cm_info.private_data_len +
1211 mpa_data_size;
1212
1213 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1214 iparams->cm_info.private_data,
1215 iparams->cm_info.private_data_len);
1216
1217 ep->mss = iparams->mss;
1218 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
1219
1220 ep->event_cb = iparams->event_cb;
1221 ep->cb_context = iparams->cb_context;
1222 ep->connect_mode = TCP_CONNECT_ACTIVE;
1223
1224 oparams->ep_context = ep;
1225
1226 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
1227
1228 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n",
1229 iparams->qp->icid, ep->tcp_cid, rc);
1230
1231 if (rc) {
1232 qed_iwarp_destroy_ep(p_hwfn, ep, true);
1233 goto err;
1234 }
1235
1236 return rc;
1237err:
1238 qed_iwarp_cid_cleaned(p_hwfn, cid);
1239
1240 return rc;
1241}
1242
1243static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn)
1244{
1245 struct qed_iwarp_ep *ep = NULL;
1246 int rc;
1247
1248 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1249
1250 if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1251 DP_ERR(p_hwfn, "Ep list is empty\n");
1252 goto out;
1253 }
1254
1255 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1256 struct qed_iwarp_ep, list_entry);
1257
1258
1259
1260
1261 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
1262 rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
1263
1264
1265
1266
1267
1268 if (rc) {
1269 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1270 ep = NULL;
1271 goto out;
1272 }
1273 }
1274
1275 list_del(&ep->list_entry);
1276
1277out:
1278 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1279 return ep;
1280}
1281
1282#define QED_IWARP_MAX_CID_CLEAN_TIME 100
1283#define QED_IWARP_MAX_NO_PROGRESS_CNT 5
1284
1285
1286
1287
1288
1289static int
1290qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap)
1291{
1292 int prev_weight = 0;
1293 int wait_count = 0;
1294 int weight = 0;
1295
1296 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1297 prev_weight = weight;
1298
1299 while (weight) {
1300
1301
1302
1303
1304
1305 if (p_hwfn->cdev->recov_in_prog)
1306 return 0;
1307
1308 msleep(QED_IWARP_MAX_CID_CLEAN_TIME);
1309
1310 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1311
1312 if (prev_weight == weight) {
1313 wait_count++;
1314 } else {
1315 prev_weight = weight;
1316 wait_count = 0;
1317 }
1318
1319 if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) {
1320 DP_NOTICE(p_hwfn,
1321 "%s bitmap wait timed out (%d cids pending)\n",
1322 bmap->name, weight);
1323 return -EBUSY;
1324 }
1325 }
1326 return 0;
1327}
1328
1329static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn)
1330{
1331 int rc;
1332 int i;
1333
1334 rc = qed_iwarp_wait_cid_map_cleared(p_hwfn,
1335 &p_hwfn->p_rdma_info->tcp_cid_map);
1336 if (rc)
1337 return rc;
1338
1339
1340 for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++)
1341 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i);
1342
1343
1344 return qed_iwarp_wait_cid_map_cleared(p_hwfn,
1345 &p_hwfn->p_rdma_info->cid_map);
1346}
1347
1348static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn)
1349{
1350 struct qed_iwarp_ep *ep;
1351
1352 while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1353 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1354
1355 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1356 struct qed_iwarp_ep, list_entry);
1357
1358 if (!ep) {
1359 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1360 break;
1361 }
1362 list_del(&ep->list_entry);
1363
1364 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1365
1366 if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID)
1367 qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid);
1368
1369 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1370 }
1371}
1372
1373static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init)
1374{
1375 struct qed_iwarp_ep *ep;
1376 int rc = 0;
1377 int count;
1378 u32 cid;
1379 int i;
1380
1381 count = init ? QED_IWARP_PREALLOC_CNT : 1;
1382 for (i = 0; i < count; i++) {
1383 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1384 if (rc)
1385 return rc;
1386
1387
1388
1389
1390 if (init) {
1391 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1392 if (rc)
1393 goto err;
1394 qed_iwarp_set_tcp_cid(p_hwfn, cid);
1395 } else {
1396
1397
1398
1399
1400 qed_iwarp_alloc_tcp_cid(p_hwfn, &cid);
1401 }
1402
1403 ep->tcp_cid = cid;
1404
1405 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1406 list_add_tail(&ep->list_entry,
1407 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
1408 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1409 }
1410
1411 return rc;
1412
1413err:
1414 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1415
1416 return rc;
1417}
1418
1419int qed_iwarp_alloc(struct qed_hwfn *p_hwfn)
1420{
1421 int rc;
1422
1423
1424
1425
1426
1427 rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
1428 QED_IWARP_PREALLOC_CNT, "TCP_CID");
1429 if (rc) {
1430 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1431 "Failed to allocate tcp cid, rc = %d\n", rc);
1432 return rc;
1433 }
1434
1435 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list);
1436 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1437
1438 rc = qed_iwarp_prealloc_ep(p_hwfn, true);
1439 if (rc)
1440 return rc;
1441
1442 return qed_ooo_alloc(p_hwfn);
1443}
1444
1445void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn)
1446{
1447 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1448
1449 qed_ooo_free(p_hwfn);
1450 qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1);
1451 kfree(iwarp_info->mpa_bufs);
1452 kfree(iwarp_info->partial_fpdus);
1453 kfree(iwarp_info->mpa_intermediate_buf);
1454}
1455
1456int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams)
1457{
1458 struct qed_hwfn *p_hwfn = rdma_cxt;
1459 struct qed_iwarp_ep *ep;
1460 u8 mpa_data_size = 0;
1461 int rc;
1462
1463 ep = iparams->ep_context;
1464 if (!ep) {
1465 DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n");
1466 return -EINVAL;
1467 }
1468
1469 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
1470 iparams->qp->icid, ep->tcp_cid);
1471
1472 if ((iparams->ord > QED_IWARP_ORD_DEFAULT) ||
1473 (iparams->ird > QED_IWARP_IRD_DEFAULT)) {
1474 DP_VERBOSE(p_hwfn,
1475 QED_MSG_RDMA,
1476 "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1477 iparams->qp->icid,
1478 ep->tcp_cid, iparams->ord, iparams->ord);
1479 return -EINVAL;
1480 }
1481
1482 qed_iwarp_prealloc_ep(p_hwfn, false);
1483
1484 ep->cb_context = iparams->cb_context;
1485 ep->qp = iparams->qp;
1486 ep->qp->ep = ep;
1487
1488 if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
1489
1490
1491
1492 if (iparams->ord > ep->cm_info.ird)
1493 iparams->ord = ep->cm_info.ird;
1494
1495 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) &&
1496 (iparams->ird == 0))
1497 iparams->ird = 1;
1498 }
1499
1500
1501 ep->cm_info.ord = iparams->ord;
1502 ep->cm_info.ird = iparams->ird;
1503
1504 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1505
1506 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1507 ep->cm_info.private_data_len = iparams->private_data_len +
1508 mpa_data_size;
1509
1510 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1511 iparams->private_data, iparams->private_data_len);
1512
1513 rc = qed_iwarp_mpa_offload(p_hwfn, ep);
1514 if (rc)
1515 qed_iwarp_modify_qp(p_hwfn,
1516 iparams->qp, QED_IWARP_QP_STATE_ERROR, 1);
1517
1518 return rc;
1519}
1520
1521int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams)
1522{
1523 struct qed_hwfn *p_hwfn = rdma_cxt;
1524 struct qed_iwarp_ep *ep;
1525 u8 mpa_data_size = 0;
1526
1527 ep = iparams->ep_context;
1528 if (!ep) {
1529 DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n");
1530 return -EINVAL;
1531 }
1532
1533 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid);
1534
1535 ep->cb_context = iparams->cb_context;
1536 ep->qp = NULL;
1537
1538 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1539
1540 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1541 ep->cm_info.private_data_len = iparams->private_data_len +
1542 mpa_data_size;
1543
1544 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1545 iparams->private_data, iparams->private_data_len);
1546
1547 return qed_iwarp_mpa_offload(p_hwfn, ep);
1548}
1549
1550static void
1551qed_iwarp_print_cm_info(struct qed_hwfn *p_hwfn,
1552 struct qed_iwarp_cm_info *cm_info)
1553{
1554 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "ip_version = %d\n",
1555 cm_info->ip_version);
1556
1557 if (cm_info->ip_version == QED_TCP_IPV4)
1558 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1559 "remote_ip %pI4h:%x, local_ip %pI4h:%x vlan=%x\n",
1560 cm_info->remote_ip, cm_info->remote_port,
1561 cm_info->local_ip, cm_info->local_port,
1562 cm_info->vlan);
1563 else
1564 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1565 "remote_ip %pI6:%x, local_ip %pI6:%x vlan=%x\n",
1566 cm_info->remote_ip, cm_info->remote_port,
1567 cm_info->local_ip, cm_info->local_port,
1568 cm_info->vlan);
1569
1570 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1571 "private_data_len = %x ord = %d, ird = %d\n",
1572 cm_info->private_data_len, cm_info->ord, cm_info->ird);
1573}
1574
1575static int
1576qed_iwarp_ll2_post_rx(struct qed_hwfn *p_hwfn,
1577 struct qed_iwarp_ll2_buff *buf, u8 handle)
1578{
1579 int rc;
1580
1581 rc = qed_ll2_post_rx_buffer(p_hwfn, handle, buf->data_phys_addr,
1582 (u16)buf->buff_size, buf, 1);
1583 if (rc) {
1584 DP_NOTICE(p_hwfn,
1585 "Failed to repost rx buffer to ll2 rc = %d, handle=%d\n",
1586 rc, handle);
1587 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buf->buff_size,
1588 buf->data, buf->data_phys_addr);
1589 kfree(buf);
1590 }
1591
1592 return rc;
1593}
1594
1595static bool
1596qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info)
1597{
1598 struct qed_iwarp_ep *ep = NULL;
1599 bool found = false;
1600
1601 list_for_each_entry(ep,
1602 &p_hwfn->p_rdma_info->iwarp.ep_list,
1603 list_entry) {
1604 if ((ep->cm_info.local_port == cm_info->local_port) &&
1605 (ep->cm_info.remote_port == cm_info->remote_port) &&
1606 (ep->cm_info.vlan == cm_info->vlan) &&
1607 !memcmp(&ep->cm_info.local_ip, cm_info->local_ip,
1608 sizeof(cm_info->local_ip)) &&
1609 !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip,
1610 sizeof(cm_info->remote_ip))) {
1611 found = true;
1612 break;
1613 }
1614 }
1615
1616 if (found) {
1617 DP_NOTICE(p_hwfn,
1618 "SYN received on active connection - dropping\n");
1619 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1620
1621 return true;
1622 }
1623
1624 return false;
1625}
1626
1627static struct qed_iwarp_listener *
1628qed_iwarp_get_listener(struct qed_hwfn *p_hwfn,
1629 struct qed_iwarp_cm_info *cm_info)
1630{
1631 struct qed_iwarp_listener *listener = NULL;
1632 static const u32 ip_zero[4] = { 0, 0, 0, 0 };
1633 bool found = false;
1634
1635 list_for_each_entry(listener,
1636 &p_hwfn->p_rdma_info->iwarp.listen_list,
1637 list_entry) {
1638 if (listener->port == cm_info->local_port) {
1639 if (!memcmp(listener->ip_addr,
1640 ip_zero, sizeof(ip_zero))) {
1641 found = true;
1642 break;
1643 }
1644
1645 if (!memcmp(listener->ip_addr,
1646 cm_info->local_ip,
1647 sizeof(cm_info->local_ip)) &&
1648 (listener->vlan == cm_info->vlan)) {
1649 found = true;
1650 break;
1651 }
1652 }
1653 }
1654
1655 if (found) {
1656 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener found = %p\n",
1657 listener);
1658 return listener;
1659 }
1660
1661 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener not found\n");
1662 return NULL;
1663}
1664
1665static int
1666qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
1667 struct qed_iwarp_cm_info *cm_info,
1668 void *buf,
1669 u8 *remote_mac_addr,
1670 u8 *local_mac_addr,
1671 int *payload_len, int *tcp_start_offset)
1672{
1673 struct vlan_ethhdr *vethh;
1674 bool vlan_valid = false;
1675 struct ipv6hdr *ip6h;
1676 struct ethhdr *ethh;
1677 struct tcphdr *tcph;
1678 struct iphdr *iph;
1679 int eth_hlen;
1680 int ip_hlen;
1681 int eth_type;
1682 int i;
1683
1684 ethh = buf;
1685 eth_type = ntohs(ethh->h_proto);
1686 if (eth_type == ETH_P_8021Q) {
1687 vlan_valid = true;
1688 vethh = (struct vlan_ethhdr *)ethh;
1689 cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK;
1690 eth_type = ntohs(vethh->h_vlan_encapsulated_proto);
1691 }
1692
1693 eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
1694
1695 if (!ether_addr_equal(ethh->h_dest,
1696 p_hwfn->p_rdma_info->iwarp.mac_addr)) {
1697 DP_VERBOSE(p_hwfn,
1698 QED_MSG_RDMA,
1699 "Got unexpected mac %pM instead of %pM\n",
1700 ethh->h_dest, p_hwfn->p_rdma_info->iwarp.mac_addr);
1701 return -EINVAL;
1702 }
1703
1704 ether_addr_copy(remote_mac_addr, ethh->h_source);
1705 ether_addr_copy(local_mac_addr, ethh->h_dest);
1706
1707 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n",
1708 eth_type, ethh->h_source);
1709
1710 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_hlen=%d destination mac: %pM\n",
1711 eth_hlen, ethh->h_dest);
1712
1713 iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen);
1714
1715 if (eth_type == ETH_P_IP) {
1716 if (iph->protocol != IPPROTO_TCP) {
1717 DP_NOTICE(p_hwfn,
1718 "Unexpected ip protocol on ll2 %x\n",
1719 iph->protocol);
1720 return -EINVAL;
1721 }
1722
1723 cm_info->local_ip[0] = ntohl(iph->daddr);
1724 cm_info->remote_ip[0] = ntohl(iph->saddr);
1725 cm_info->ip_version = QED_TCP_IPV4;
1726
1727 ip_hlen = (iph->ihl) * sizeof(u32);
1728 *payload_len = ntohs(iph->tot_len) - ip_hlen;
1729 } else if (eth_type == ETH_P_IPV6) {
1730 ip6h = (struct ipv6hdr *)iph;
1731
1732 if (ip6h->nexthdr != IPPROTO_TCP) {
1733 DP_NOTICE(p_hwfn,
1734 "Unexpected ip protocol on ll2 %x\n",
1735 iph->protocol);
1736 return -EINVAL;
1737 }
1738
1739 for (i = 0; i < 4; i++) {
1740 cm_info->local_ip[i] =
1741 ntohl(ip6h->daddr.in6_u.u6_addr32[i]);
1742 cm_info->remote_ip[i] =
1743 ntohl(ip6h->saddr.in6_u.u6_addr32[i]);
1744 }
1745 cm_info->ip_version = QED_TCP_IPV6;
1746
1747 ip_hlen = sizeof(*ip6h);
1748 *payload_len = ntohs(ip6h->payload_len);
1749 } else {
1750 DP_NOTICE(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type);
1751 return -EINVAL;
1752 }
1753
1754 tcph = (struct tcphdr *)((u8 *)iph + ip_hlen);
1755
1756 if (!tcph->syn) {
1757 DP_NOTICE(p_hwfn,
1758 "Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n",
1759 iph->ihl, tcph->source, tcph->dest);
1760 return -EINVAL;
1761 }
1762
1763 cm_info->local_port = ntohs(tcph->dest);
1764 cm_info->remote_port = ntohs(tcph->source);
1765
1766 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1767
1768 *tcp_start_offset = eth_hlen + ip_hlen;
1769
1770 return 0;
1771}
1772
1773static struct qed_iwarp_fpdu *qed_iwarp_get_curr_fpdu(struct qed_hwfn *p_hwfn,
1774 u16 cid)
1775{
1776 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1777 struct qed_iwarp_fpdu *partial_fpdu;
1778 u32 idx;
1779
1780 idx = cid - qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP);
1781 if (idx >= iwarp_info->max_num_partial_fpdus) {
1782 DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid,
1783 iwarp_info->max_num_partial_fpdus);
1784 return NULL;
1785 }
1786
1787 partial_fpdu = &iwarp_info->partial_fpdus[idx];
1788
1789 return partial_fpdu;
1790}
1791
1792enum qed_iwarp_mpa_pkt_type {
1793 QED_IWARP_MPA_PKT_PACKED,
1794 QED_IWARP_MPA_PKT_PARTIAL,
1795 QED_IWARP_MPA_PKT_UNALIGNED
1796};
1797
1798#define QED_IWARP_INVALID_FPDU_LENGTH 0xffff
1799#define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2)
1800#define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4)
1801
1802
1803#define QED_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) ALIGN(data_len, 4)
1804#define QED_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \
1805 (QED_IWARP_PDU_DATA_LEN_WITH_PAD((_mpa_len) + \
1806 QED_IWARP_MPA_FPDU_LENGTH_SIZE) + \
1807 QED_IWARP_MPA_CRC32_DIGEST_SIZE)
1808
1809
1810#define QED_IWARP_MAX_BDS_PER_FPDU 3
1811
1812static const char * const pkt_type_str[] = {
1813 "QED_IWARP_MPA_PKT_PACKED",
1814 "QED_IWARP_MPA_PKT_PARTIAL",
1815 "QED_IWARP_MPA_PKT_UNALIGNED"
1816};
1817
1818static int
1819qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
1820 struct qed_iwarp_fpdu *fpdu,
1821 struct qed_iwarp_ll2_buff *buf);
1822
1823static enum qed_iwarp_mpa_pkt_type
1824qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn,
1825 struct qed_iwarp_fpdu *fpdu,
1826 u16 tcp_payload_len, u8 *mpa_data)
1827{
1828 enum qed_iwarp_mpa_pkt_type pkt_type;
1829 u16 mpa_len;
1830
1831 if (fpdu->incomplete_bytes) {
1832 pkt_type = QED_IWARP_MPA_PKT_UNALIGNED;
1833 goto out;
1834 }
1835
1836
1837
1838
1839 if (tcp_payload_len == 1) {
1840 fpdu->fpdu_length = *mpa_data << BITS_PER_BYTE;
1841 pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
1842 goto out;
1843 }
1844
1845 mpa_len = ntohs(*(__force __be16 *)mpa_data);
1846 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
1847
1848 if (fpdu->fpdu_length <= tcp_payload_len)
1849 pkt_type = QED_IWARP_MPA_PKT_PACKED;
1850 else
1851 pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
1852
1853out:
1854 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1855 "MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n",
1856 pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len);
1857
1858 return pkt_type;
1859}
1860
1861static void
1862qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf,
1863 struct qed_iwarp_fpdu *fpdu,
1864 struct unaligned_opaque_data *pkt_data,
1865 u16 tcp_payload_size, u8 placement_offset)
1866{
1867 u16 first_mpa_offset = le16_to_cpu(pkt_data->first_mpa_offset);
1868
1869 fpdu->mpa_buf = buf;
1870 fpdu->pkt_hdr = buf->data_phys_addr + placement_offset;
1871 fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset;
1872 fpdu->mpa_frag = buf->data_phys_addr + first_mpa_offset;
1873 fpdu->mpa_frag_virt = (u8 *)(buf->data) + first_mpa_offset;
1874
1875 if (tcp_payload_size == 1)
1876 fpdu->incomplete_bytes = QED_IWARP_INVALID_FPDU_LENGTH;
1877 else if (tcp_payload_size < fpdu->fpdu_length)
1878 fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size;
1879 else
1880 fpdu->incomplete_bytes = 0;
1881
1882 fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes;
1883}
1884
1885static int
1886qed_iwarp_cp_pkt(struct qed_hwfn *p_hwfn,
1887 struct qed_iwarp_fpdu *fpdu,
1888 struct unaligned_opaque_data *pkt_data,
1889 struct qed_iwarp_ll2_buff *buf, u16 tcp_payload_size)
1890{
1891 u16 first_mpa_offset = le16_to_cpu(pkt_data->first_mpa_offset);
1892 u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf;
1893 int rc;
1894
1895
1896
1897
1898
1899
1900
1901 if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) {
1902 DP_ERR(p_hwfn,
1903 "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",
1904 buf->buff_size, fpdu->mpa_frag_len,
1905 tcp_payload_size, fpdu->incomplete_bytes);
1906 return -EINVAL;
1907 }
1908
1909 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1910 "MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n",
1911 fpdu->mpa_frag_virt, fpdu->mpa_frag_len,
1912 (u8 *)(buf->data) + first_mpa_offset, tcp_payload_size);
1913
1914 memcpy(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len);
1915 memcpy(tmp_buf + fpdu->mpa_frag_len,
1916 (u8 *)(buf->data) + first_mpa_offset, tcp_payload_size);
1917
1918 rc = qed_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf);
1919 if (rc)
1920 return rc;
1921
1922
1923
1924
1925 memcpy((u8 *)(buf->data), tmp_buf,
1926 fpdu->mpa_frag_len + tcp_payload_size);
1927
1928 fpdu->mpa_buf = buf;
1929
1930
1931 fpdu->mpa_frag = buf->data_phys_addr;
1932 fpdu->mpa_frag_virt = buf->data;
1933 fpdu->mpa_frag_len += tcp_payload_size;
1934
1935 fpdu->incomplete_bytes -= tcp_payload_size;
1936
1937 DP_VERBOSE(p_hwfn,
1938 QED_MSG_RDMA,
1939 "MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n",
1940 buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size,
1941 fpdu->incomplete_bytes);
1942
1943 return 0;
1944}
1945
1946static void
1947qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn,
1948 struct qed_iwarp_fpdu *fpdu, u8 *mpa_data)
1949{
1950 u16 mpa_len;
1951
1952
1953 if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) {
1954
1955 mpa_len = fpdu->fpdu_length | *mpa_data;
1956 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
1957
1958 fpdu->mpa_frag_len = 1;
1959 fpdu->incomplete_bytes = fpdu->fpdu_length - 1;
1960 DP_VERBOSE(p_hwfn,
1961 QED_MSG_RDMA,
1962 "MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n",
1963 mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes);
1964 }
1965}
1966
1967#define QED_IWARP_IS_RIGHT_EDGE(_curr_pkt) \
1968 (GET_FIELD((_curr_pkt)->flags, \
1969 UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE))
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981static int
1982qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
1983 struct qed_iwarp_fpdu *fpdu,
1984 struct qed_iwarp_ll2_buff *buf)
1985{
1986 struct qed_ll2_tx_pkt_info tx_pkt;
1987 u8 ll2_handle;
1988 int rc;
1989
1990 memset(&tx_pkt, 0, sizeof(tx_pkt));
1991 tx_pkt.num_of_bds = 1;
1992 tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP;
1993 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
1994 tx_pkt.first_frag = fpdu->pkt_hdr;
1995 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
1996 buf->piggy_buf = NULL;
1997 tx_pkt.cookie = buf;
1998
1999 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2000
2001 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2002 if (rc)
2003 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2004 "Can't drop packet rc=%d\n", rc);
2005
2006 DP_VERBOSE(p_hwfn,
2007 QED_MSG_RDMA,
2008 "MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n",
2009 (unsigned long int)tx_pkt.first_frag,
2010 tx_pkt.first_frag_len, buf, rc);
2011
2012 return rc;
2013}
2014
2015static int
2016qed_iwarp_win_right_edge(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu)
2017{
2018 struct qed_ll2_tx_pkt_info tx_pkt;
2019 u8 ll2_handle;
2020 int rc;
2021
2022 memset(&tx_pkt, 0, sizeof(tx_pkt));
2023 tx_pkt.num_of_bds = 1;
2024 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2025 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
2026
2027 tx_pkt.first_frag = fpdu->pkt_hdr;
2028 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
2029 tx_pkt.enable_ip_cksum = true;
2030 tx_pkt.enable_l4_cksum = true;
2031 tx_pkt.calc_ip_len = true;
2032
2033 tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE;
2034
2035 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2036
2037 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2038 if (rc)
2039 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2040 "Can't send right edge rc=%d\n", rc);
2041 DP_VERBOSE(p_hwfn,
2042 QED_MSG_RDMA,
2043 "MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n",
2044 tx_pkt.num_of_bds,
2045 (unsigned long int)tx_pkt.first_frag,
2046 tx_pkt.first_frag_len, rc);
2047
2048 return rc;
2049}
2050
2051static int
2052qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn,
2053 struct qed_iwarp_fpdu *fpdu,
2054 struct unaligned_opaque_data *curr_pkt,
2055 struct qed_iwarp_ll2_buff *buf,
2056 u16 tcp_payload_size, enum qed_iwarp_mpa_pkt_type pkt_type)
2057{
2058 struct qed_ll2_tx_pkt_info tx_pkt;
2059 u16 first_mpa_offset;
2060 u8 ll2_handle;
2061 int rc;
2062
2063 memset(&tx_pkt, 0, sizeof(tx_pkt));
2064
2065
2066
2067
2068
2069
2070
2071 tx_pkt.num_of_bds = (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2;
2072 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2073 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
2074
2075
2076 if (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED ||
2077 tcp_payload_size <= fpdu->fpdu_length)
2078 tx_pkt.cookie = fpdu->mpa_buf;
2079
2080 tx_pkt.first_frag = fpdu->pkt_hdr;
2081 tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
2082 tx_pkt.enable_ip_cksum = true;
2083 tx_pkt.enable_l4_cksum = true;
2084 tx_pkt.calc_ip_len = true;
2085
2086 tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE;
2087
2088
2089
2090
2091 if (tcp_payload_size == fpdu->incomplete_bytes)
2092 fpdu->mpa_buf->piggy_buf = buf;
2093
2094 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
2095
2096
2097 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
2098 if (rc)
2099 goto out;
2100
2101
2102 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle,
2103 fpdu->mpa_frag,
2104 fpdu->mpa_frag_len);
2105 if (rc)
2106 goto out;
2107
2108 if (!fpdu->incomplete_bytes)
2109 goto out;
2110
2111 first_mpa_offset = le16_to_cpu(curr_pkt->first_mpa_offset);
2112
2113
2114 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn,
2115 ll2_handle,
2116 buf->data_phys_addr +
2117 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(cpu_to_le32(opaque_data1),
2139 cpu_to_le32(opaque_data0));
2140 *curr_pkt = *((struct unaligned_opaque_data *)&opaque_data);
2141
2142 le16_add_cpu(&curr_pkt->first_mpa_offset,
2143 curr_pkt->tcp_payload_offset);
2144}
2145
2146
2147
2148
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 u16 cid, first_mpa_offset;
2159 int rc = -EINVAL;
2160 u8 *mpa_data;
2161
2162 cid = le32_to_cpu(curr_pkt->cid);
2163
2164 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)cid);
2165 if (!fpdu) {
2166 DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n",
2167 cid);
2168 goto err;
2169 }
2170
2171 do {
2172 first_mpa_offset = le16_to_cpu(curr_pkt->first_mpa_offset);
2173 mpa_data = ((u8 *)(buf->data) + first_mpa_offset);
2174
2175 pkt_type = qed_iwarp_mpa_classify(p_hwfn, fpdu,
2176 mpa_buf->tcp_payload_len,
2177 mpa_data);
2178
2179 switch (pkt_type) {
2180 case QED_IWARP_MPA_PKT_PARTIAL:
2181 qed_iwarp_init_fpdu(buf, fpdu,
2182 curr_pkt,
2183 mpa_buf->tcp_payload_len,
2184 mpa_buf->placement_offset);
2185
2186 if (!QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
2187 mpa_buf->tcp_payload_len = 0;
2188 break;
2189 }
2190
2191 rc = qed_iwarp_win_right_edge(p_hwfn, fpdu);
2192
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 = 0;
2201 break;
2202 case QED_IWARP_MPA_PKT_PACKED:
2203 qed_iwarp_init_fpdu(buf, fpdu,
2204 curr_pkt,
2205 mpa_buf->tcp_payload_len,
2206 mpa_buf->placement_offset);
2207
2208 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
2209 mpa_buf->tcp_payload_len,
2210 pkt_type);
2211 if (rc) {
2212 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2213 "Can't send FPDU:reset rc=%d\n", rc);
2214 memset(fpdu, 0, sizeof(*fpdu));
2215 break;
2216 }
2217
2218 mpa_buf->tcp_payload_len -= fpdu->fpdu_length;
2219 le16_add_cpu(&curr_pkt->first_mpa_offset,
2220 fpdu->fpdu_length);
2221 break;
2222 case QED_IWARP_MPA_PKT_UNALIGNED:
2223 qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data);
2224 if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) {
2225
2226
2227
2228 if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
2229 rc = qed_iwarp_win_right_edge(p_hwfn,
2230 fpdu);
2231
2232 if (rc)
2233 return rc;
2234 }
2235
2236 rc = qed_iwarp_cp_pkt(p_hwfn, fpdu, curr_pkt,
2237 buf,
2238 mpa_buf->tcp_payload_len);
2239 if (rc)
2240 return rc;
2241
2242 mpa_buf->tcp_payload_len = 0;
2243 break;
2244 }
2245
2246 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
2247 mpa_buf->tcp_payload_len,
2248 pkt_type);
2249 if (rc) {
2250 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2251 "Can't send FPDU:delay rc=%d\n", rc);
2252
2253
2254
2255 break;
2256 }
2257
2258 mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes;
2259 le16_add_cpu(&curr_pkt->first_mpa_offset,
2260 fpdu->incomplete_bytes);
2261
2262
2263 fpdu->incomplete_bytes = 0;
2264 break;
2265 }
2266 } while (mpa_buf->tcp_payload_len && !rc);
2267
2268 return rc;
2269
2270err:
2271 qed_iwarp_ll2_post_rx(p_hwfn,
2272 buf,
2273 p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle);
2274 return rc;
2275}
2276
2277static void qed_iwarp_process_pending_pkts(struct qed_hwfn *p_hwfn)
2278{
2279 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2280 struct qed_iwarp_ll2_mpa_buf *mpa_buf = NULL;
2281 int rc;
2282
2283 while (!list_empty(&iwarp_info->mpa_buf_pending_list)) {
2284 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_pending_list,
2285 struct qed_iwarp_ll2_mpa_buf,
2286 list_entry);
2287
2288 rc = qed_iwarp_process_mpa_pkt(p_hwfn, mpa_buf);
2289
2290
2291
2292
2293 if (rc == -EBUSY)
2294 break;
2295
2296 list_move_tail(&mpa_buf->list_entry,
2297 &iwarp_info->mpa_buf_list);
2298
2299 if (rc) {
2300 DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc);
2301 break;
2302 }
2303 }
2304}
2305
2306static void
2307qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
2308{
2309 struct qed_iwarp_ll2_mpa_buf *mpa_buf;
2310 struct qed_iwarp_info *iwarp_info;
2311 struct qed_hwfn *p_hwfn = cxt;
2312 u16 first_mpa_offset;
2313
2314 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2315 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_list,
2316 struct qed_iwarp_ll2_mpa_buf, list_entry);
2317 if (!mpa_buf) {
2318 DP_ERR(p_hwfn, "No free mpa buf\n");
2319 goto err;
2320 }
2321
2322 list_del(&mpa_buf->list_entry);
2323 qed_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data,
2324 data->opaque_data_0, data->opaque_data_1);
2325
2326 first_mpa_offset = le16_to_cpu(mpa_buf->data.first_mpa_offset);
2327
2328 DP_VERBOSE(p_hwfn,
2329 QED_MSG_RDMA,
2330 "LL2 MPA CompRx payload_len:0x%x\tfirst_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n",
2331 data->length.packet_length, first_mpa_offset,
2332 mpa_buf->data.tcp_payload_offset, mpa_buf->data.flags,
2333 mpa_buf->data.cid);
2334
2335 mpa_buf->ll2_buf = data->cookie;
2336 mpa_buf->tcp_payload_len = data->length.packet_length -
2337 first_mpa_offset;
2338
2339 first_mpa_offset += data->u.placement_offset;
2340 mpa_buf->data.first_mpa_offset = cpu_to_le16(first_mpa_offset);
2341 mpa_buf->placement_offset = data->u.placement_offset;
2342
2343 list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_pending_list);
2344
2345 qed_iwarp_process_pending_pkts(p_hwfn);
2346 return;
2347err:
2348 qed_iwarp_ll2_post_rx(p_hwfn, data->cookie,
2349 iwarp_info->ll2_mpa_handle);
2350}
2351
2352static void
2353qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
2354{
2355 struct qed_iwarp_ll2_buff *buf = data->cookie;
2356 struct qed_iwarp_listener *listener;
2357 struct qed_ll2_tx_pkt_info tx_pkt;
2358 struct qed_iwarp_cm_info cm_info;
2359 struct qed_hwfn *p_hwfn = cxt;
2360 u8 remote_mac_addr[ETH_ALEN];
2361 u8 local_mac_addr[ETH_ALEN];
2362 struct qed_iwarp_ep *ep;
2363 int tcp_start_offset;
2364 u8 ll2_syn_handle;
2365 int payload_len;
2366 u32 hdr_size;
2367 int rc;
2368
2369 memset(&cm_info, 0, sizeof(cm_info));
2370 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
2371
2372
2373 if (data->err_flags) {
2374 DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n",
2375 data->err_flags);
2376 goto err;
2377 }
2378
2379 if (GET_FIELD(data->parse_flags,
2380 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) &&
2381 GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) {
2382 DP_NOTICE(p_hwfn, "Syn packet received with checksum error\n");
2383 goto err;
2384 }
2385
2386 rc = qed_iwarp_parse_rx_pkt(p_hwfn, &cm_info, (u8 *)(buf->data) +
2387 data->u.placement_offset, remote_mac_addr,
2388 local_mac_addr, &payload_len,
2389 &tcp_start_offset);
2390 if (rc)
2391 goto err;
2392
2393
2394 listener = qed_iwarp_get_listener(p_hwfn, &cm_info);
2395 if (!listener) {
2396 DP_VERBOSE(p_hwfn,
2397 QED_MSG_RDMA,
2398 "SYN received on tuple not listened on parse_flags=%d packet len=%d\n",
2399 data->parse_flags, data->length.packet_length);
2400
2401 memset(&tx_pkt, 0, sizeof(tx_pkt));
2402 tx_pkt.num_of_bds = 1;
2403 tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2;
2404 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
2405 tx_pkt.first_frag = buf->data_phys_addr +
2406 data->u.placement_offset;
2407 tx_pkt.first_frag_len = data->length.packet_length;
2408 tx_pkt.cookie = buf;
2409
2410 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_syn_handle,
2411 &tx_pkt, true);
2412
2413 if (rc) {
2414 DP_NOTICE(p_hwfn,
2415 "Can't post SYN back to chip rc=%d\n", rc);
2416 goto err;
2417 }
2418 return;
2419 }
2420
2421 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n");
2422
2423
2424
2425 if (qed_iwarp_ep_exists(p_hwfn, &cm_info))
2426 goto err;
2427
2428 ep = qed_iwarp_get_free_ep(p_hwfn);
2429 if (!ep)
2430 goto err;
2431
2432 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2433 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
2434 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2435
2436 ether_addr_copy(ep->remote_mac_addr, remote_mac_addr);
2437 ether_addr_copy(ep->local_mac_addr, local_mac_addr);
2438
2439 memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info));
2440
2441 hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60);
2442 ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size;
2443 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
2444
2445 ep->event_cb = listener->event_cb;
2446 ep->cb_context = listener->cb_context;
2447 ep->connect_mode = TCP_CONNECT_PASSIVE;
2448
2449 ep->syn = buf;
2450 ep->syn_ip_payload_length = (u16)payload_len;
2451 ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset +
2452 tcp_start_offset;
2453
2454 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
2455 if (rc) {
2456 qed_iwarp_return_ep(p_hwfn, ep);
2457 goto err;
2458 }
2459
2460 return;
2461err:
2462 qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle);
2463}
2464
2465static void qed_iwarp_ll2_rel_rx_pkt(void *cxt, u8 connection_handle,
2466 void *cookie, dma_addr_t rx_buf_addr,
2467 bool b_last_packet)
2468{
2469 struct qed_iwarp_ll2_buff *buffer = cookie;
2470 struct qed_hwfn *p_hwfn = cxt;
2471
2472 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
2473 buffer->data, buffer->data_phys_addr);
2474 kfree(buffer);
2475}
2476
2477static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle,
2478 void *cookie, dma_addr_t first_frag_addr,
2479 bool b_last_fragment, bool b_last_packet)
2480{
2481 struct qed_iwarp_ll2_buff *buffer = cookie;
2482 struct qed_iwarp_ll2_buff *piggy;
2483 struct qed_hwfn *p_hwfn = cxt;
2484
2485 if (!buffer)
2486 return;
2487
2488
2489 piggy = buffer->piggy_buf;
2490 if (piggy) {
2491 buffer->piggy_buf = NULL;
2492 qed_iwarp_ll2_post_rx(p_hwfn, piggy, connection_handle);
2493 }
2494
2495 qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle);
2496
2497 if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle)
2498 qed_iwarp_process_pending_pkts(p_hwfn);
2499
2500 return;
2501}
2502
2503static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle,
2504 void *cookie, dma_addr_t first_frag_addr,
2505 bool b_last_fragment, bool b_last_packet)
2506{
2507 struct qed_iwarp_ll2_buff *buffer = cookie;
2508 struct qed_hwfn *p_hwfn = cxt;
2509
2510 if (!buffer)
2511 return;
2512
2513 if (buffer->piggy_buf) {
2514 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
2515 buffer->piggy_buf->buff_size,
2516 buffer->piggy_buf->data,
2517 buffer->piggy_buf->data_phys_addr);
2518
2519 kfree(buffer->piggy_buf);
2520 }
2521
2522 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
2523 buffer->data, buffer->data_phys_addr);
2524
2525 kfree(buffer);
2526}
2527
2528
2529
2530
2531static void
2532qed_iwarp_ll2_slowpath(void *cxt,
2533 u8 connection_handle,
2534 u32 opaque_data_0, u32 opaque_data_1)
2535{
2536 struct unaligned_opaque_data unalign_data;
2537 struct qed_hwfn *p_hwfn = cxt;
2538 struct qed_iwarp_fpdu *fpdu;
2539 u32 cid;
2540
2541 qed_iwarp_mpa_get_data(p_hwfn, &unalign_data,
2542 opaque_data_0, opaque_data_1);
2543
2544 cid = le32_to_cpu(unalign_data.cid);
2545
2546 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "(0x%x) Flush fpdu\n", cid);
2547
2548 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)cid);
2549 if (fpdu)
2550 memset(fpdu, 0, sizeof(*fpdu));
2551}
2552
2553static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn)
2554{
2555 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2556 int rc = 0;
2557
2558 if (iwarp_info->ll2_syn_handle != QED_IWARP_HANDLE_INVAL) {
2559 rc = qed_ll2_terminate_connection(p_hwfn,
2560 iwarp_info->ll2_syn_handle);
2561 if (rc)
2562 DP_INFO(p_hwfn, "Failed to terminate syn connection\n");
2563
2564 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_syn_handle);
2565 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
2566 }
2567
2568 if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) {
2569 rc = qed_ll2_terminate_connection(p_hwfn,
2570 iwarp_info->ll2_ooo_handle);
2571 if (rc)
2572 DP_INFO(p_hwfn, "Failed to terminate ooo connection\n");
2573
2574 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
2575 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
2576 }
2577
2578 if (iwarp_info->ll2_mpa_handle != QED_IWARP_HANDLE_INVAL) {
2579 rc = qed_ll2_terminate_connection(p_hwfn,
2580 iwarp_info->ll2_mpa_handle);
2581 if (rc)
2582 DP_INFO(p_hwfn, "Failed to terminate mpa connection\n");
2583
2584 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
2585 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
2586 }
2587
2588 qed_llh_remove_mac_filter(p_hwfn->cdev, 0,
2589 p_hwfn->p_rdma_info->iwarp.mac_addr);
2590
2591 return rc;
2592}
2593
2594static int
2595qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn,
2596 int num_rx_bufs, int buff_size, u8 ll2_handle)
2597{
2598 struct qed_iwarp_ll2_buff *buffer;
2599 int rc = 0;
2600 int i;
2601
2602 for (i = 0; i < num_rx_bufs; i++) {
2603 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
2604 if (!buffer) {
2605 rc = -ENOMEM;
2606 break;
2607 }
2608
2609 buffer->data = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
2610 buff_size,
2611 &buffer->data_phys_addr,
2612 GFP_KERNEL);
2613 if (!buffer->data) {
2614 kfree(buffer);
2615 rc = -ENOMEM;
2616 break;
2617 }
2618
2619 buffer->buff_size = buff_size;
2620 rc = qed_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle);
2621 if (rc)
2622
2623 break;
2624 }
2625 return rc;
2626}
2627
2628#define QED_IWARP_MAX_BUF_SIZE(mtu) \
2629 ALIGN((mtu) + ETH_HLEN + 2 * VLAN_HLEN + 2 + ETH_CACHE_LINE_SIZE, \
2630 ETH_CACHE_LINE_SIZE)
2631
2632static int
2633qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
2634 struct qed_rdma_start_in_params *params,
2635 u32 rcv_wnd_size)
2636{
2637 struct qed_iwarp_info *iwarp_info;
2638 struct qed_ll2_acquire_data data;
2639 struct qed_ll2_cbs cbs;
2640 u32 buff_size;
2641 u16 n_ooo_bufs;
2642 int rc = 0;
2643 int i;
2644
2645 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2646 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
2647 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
2648 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
2649
2650 iwarp_info->max_mtu = params->max_mtu;
2651
2652 ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr);
2653
2654 rc = qed_llh_add_mac_filter(p_hwfn->cdev, 0, params->mac_addr);
2655 if (rc)
2656 return rc;
2657
2658
2659 cbs.rx_comp_cb = qed_iwarp_ll2_comp_syn_pkt;
2660 cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt;
2661 cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt;
2662 cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt;
2663 cbs.slowpath_cb = NULL;
2664 cbs.cookie = p_hwfn;
2665
2666 memset(&data, 0, sizeof(data));
2667 data.input.conn_type = QED_LL2_TYPE_IWARP;
2668
2669 data.input.rx_conn_type = QED_LL2_RX_TYPE_CTX;
2670 data.input.mtu = params->max_mtu;
2671 data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE;
2672 data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE;
2673 data.input.tx_max_bds_per_packet = 1;
2674 data.input.tx_tc = PKT_LB_TC;
2675 data.input.tx_dest = QED_LL2_TX_DEST_LB;
2676 data.p_connection_handle = &iwarp_info->ll2_syn_handle;
2677 data.cbs = &cbs;
2678
2679 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2680 if (rc) {
2681 DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n");
2682 qed_llh_remove_mac_filter(p_hwfn->cdev, 0, params->mac_addr);
2683 return rc;
2684 }
2685
2686 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle);
2687 if (rc) {
2688 DP_NOTICE(p_hwfn, "Failed to establish LL2 connection\n");
2689 goto err;
2690 }
2691
2692 buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu);
2693 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
2694 QED_IWARP_LL2_SYN_RX_SIZE,
2695 buff_size,
2696 iwarp_info->ll2_syn_handle);
2697 if (rc)
2698 goto err;
2699
2700
2701 data.input.conn_type = QED_LL2_TYPE_OOO;
2702
2703 data.input.rx_conn_type = QED_LL2_RX_TYPE_LEGACY;
2704 data.input.mtu = params->max_mtu;
2705
2706 n_ooo_bufs = (QED_IWARP_MAX_OOO * rcv_wnd_size) /
2707 iwarp_info->max_mtu;
2708 n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE);
2709
2710 data.input.rx_num_desc = n_ooo_bufs;
2711 data.input.rx_num_ooo_buffers = n_ooo_bufs;
2712
2713 data.input.tx_max_bds_per_packet = 1;
2714 data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE;
2715 data.p_connection_handle = &iwarp_info->ll2_ooo_handle;
2716
2717 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2718 if (rc)
2719 goto err;
2720
2721 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
2722 if (rc)
2723 goto err;
2724
2725
2726 cbs.rx_comp_cb = qed_iwarp_ll2_comp_mpa_pkt;
2727 cbs.slowpath_cb = qed_iwarp_ll2_slowpath;
2728
2729 memset(&data, 0, sizeof(data));
2730 data.input.conn_type = QED_LL2_TYPE_IWARP;
2731 data.input.mtu = params->max_mtu;
2732
2733
2734
2735
2736 data.input.rx_num_desc = n_ooo_bufs * 2;
2737 data.input.tx_num_desc = data.input.rx_num_desc;
2738 data.input.tx_max_bds_per_packet = QED_IWARP_MAX_BDS_PER_FPDU;
2739 data.input.tx_tc = PKT_LB_TC;
2740 data.input.tx_dest = QED_LL2_TX_DEST_LB;
2741 data.p_connection_handle = &iwarp_info->ll2_mpa_handle;
2742 data.input.secondary_queue = true;
2743 data.cbs = &cbs;
2744
2745 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2746 if (rc)
2747 goto err;
2748
2749 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
2750 if (rc)
2751 goto err;
2752
2753 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
2754 data.input.rx_num_desc,
2755 buff_size,
2756 iwarp_info->ll2_mpa_handle);
2757 if (rc)
2758 goto err;
2759
2760 iwarp_info->partial_fpdus = kcalloc((u16)p_hwfn->p_rdma_info->num_qps,
2761 sizeof(*iwarp_info->partial_fpdus),
2762 GFP_KERNEL);
2763 if (!iwarp_info->partial_fpdus) {
2764 rc = -ENOMEM;
2765 goto err;
2766 }
2767
2768 iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps;
2769
2770 iwarp_info->mpa_intermediate_buf = kzalloc(buff_size, GFP_KERNEL);
2771 if (!iwarp_info->mpa_intermediate_buf) {
2772 rc = -ENOMEM;
2773 goto err;
2774 }
2775
2776
2777
2778
2779
2780
2781 iwarp_info->mpa_bufs = kcalloc(data.input.rx_num_desc,
2782 sizeof(*iwarp_info->mpa_bufs),
2783 GFP_KERNEL);
2784 if (!iwarp_info->mpa_bufs) {
2785 rc = -ENOMEM;
2786 goto err;
2787 }
2788
2789 INIT_LIST_HEAD(&iwarp_info->mpa_buf_pending_list);
2790 INIT_LIST_HEAD(&iwarp_info->mpa_buf_list);
2791 for (i = 0; i < data.input.rx_num_desc; i++)
2792 list_add_tail(&iwarp_info->mpa_bufs[i].list_entry,
2793 &iwarp_info->mpa_buf_list);
2794 return rc;
2795err:
2796 qed_iwarp_ll2_stop(p_hwfn);
2797
2798 return rc;
2799}
2800
2801static struct {
2802 u32 two_ports;
2803 u32 four_ports;
2804} qed_iwarp_rcv_wnd_size[MAX_CHIP_IDS] = {
2805 {QED_IWARP_RCV_WND_SIZE_DEF_BB_2P, QED_IWARP_RCV_WND_SIZE_DEF_BB_4P},
2806 {QED_IWARP_RCV_WND_SIZE_DEF_AH_2P, QED_IWARP_RCV_WND_SIZE_DEF_AH_4P}
2807};
2808
2809int qed_iwarp_setup(struct qed_hwfn *p_hwfn,
2810 struct qed_rdma_start_in_params *params)
2811{
2812 struct qed_dev *cdev = p_hwfn->cdev;
2813 struct qed_iwarp_info *iwarp_info;
2814 enum chip_ids chip_id;
2815 u32 rcv_wnd_size;
2816
2817 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
2818
2819 iwarp_info->tcp_flags = QED_IWARP_TS_EN;
2820
2821 chip_id = QED_IS_BB(cdev) ? CHIP_BB : CHIP_K2;
2822 rcv_wnd_size = (qed_device_num_ports(cdev) == 4) ?
2823 qed_iwarp_rcv_wnd_size[chip_id].four_ports :
2824 qed_iwarp_rcv_wnd_size[chip_id].two_ports;
2825
2826
2827 iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) -
2828 ilog2(QED_IWARP_RCV_WND_SIZE_MIN);
2829 iwarp_info->rcv_wnd_size = rcv_wnd_size >> iwarp_info->rcv_wnd_scale;
2830 iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED;
2831 iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
2832
2833 iwarp_info->peer2peer = QED_IWARP_PARAM_P2P;
2834
2835 iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND |
2836 MPA_RTR_TYPE_ZERO_WRITE |
2837 MPA_RTR_TYPE_ZERO_READ;
2838
2839 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock);
2840 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list);
2841 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list);
2842
2843 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP,
2844 qed_iwarp_async_event);
2845 qed_ooo_setup(p_hwfn);
2846
2847 return qed_iwarp_ll2_start(p_hwfn, params, rcv_wnd_size);
2848}
2849
2850int qed_iwarp_stop(struct qed_hwfn *p_hwfn)
2851{
2852 int rc;
2853
2854 qed_iwarp_free_prealloc_ep(p_hwfn);
2855 rc = qed_iwarp_wait_for_all_cids(p_hwfn);
2856 if (rc)
2857 return rc;
2858
2859 return qed_iwarp_ll2_stop(p_hwfn);
2860}
2861
2862static void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn,
2863 struct qed_iwarp_ep *ep,
2864 u8 fw_return_code)
2865{
2866 struct qed_iwarp_cm_event_params params;
2867
2868 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_ERROR, true);
2869
2870 params.event = QED_IWARP_EVENT_CLOSE;
2871 params.ep_context = ep;
2872 params.cm_info = &ep->cm_info;
2873 params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ?
2874 0 : -ECONNRESET;
2875
2876
2877 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
2878
2879 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2880 list_del(&ep->list_entry);
2881 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2882
2883 ep->event_cb(ep->cb_context, ¶ms);
2884}
2885
2886static void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn,
2887 struct qed_iwarp_ep *ep,
2888 int fw_ret_code)
2889{
2890 struct qed_iwarp_cm_event_params params;
2891 bool event_cb = false;
2892
2893 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n",
2894 ep->cid, fw_ret_code);
2895
2896 switch (fw_ret_code) {
2897 case IWARP_EXCEPTION_DETECTED_LLP_CLOSED:
2898 params.status = 0;
2899 params.event = QED_IWARP_EVENT_DISCONNECT;
2900 event_cb = true;
2901 break;
2902 case IWARP_EXCEPTION_DETECTED_LLP_RESET:
2903 params.status = -ECONNRESET;
2904 params.event = QED_IWARP_EVENT_DISCONNECT;
2905 event_cb = true;
2906 break;
2907 case IWARP_EXCEPTION_DETECTED_RQ_EMPTY:
2908 params.event = QED_IWARP_EVENT_RQ_EMPTY;
2909 event_cb = true;
2910 break;
2911 case IWARP_EXCEPTION_DETECTED_IRQ_FULL:
2912 params.event = QED_IWARP_EVENT_IRQ_FULL;
2913 event_cb = true;
2914 break;
2915 case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT:
2916 params.event = QED_IWARP_EVENT_LLP_TIMEOUT;
2917 event_cb = true;
2918 break;
2919 case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR:
2920 params.event = QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR;
2921 event_cb = true;
2922 break;
2923 case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW:
2924 params.event = QED_IWARP_EVENT_CQ_OVERFLOW;
2925 event_cb = true;
2926 break;
2927 case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC:
2928 params.event = QED_IWARP_EVENT_QP_CATASTROPHIC;
2929 event_cb = true;
2930 break;
2931 case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR:
2932 params.event = QED_IWARP_EVENT_LOCAL_ACCESS_ERROR;
2933 event_cb = true;
2934 break;
2935 case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR:
2936 params.event = QED_IWARP_EVENT_REMOTE_OPERATION_ERROR;
2937 event_cb = true;
2938 break;
2939 case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED:
2940 params.event = QED_IWARP_EVENT_TERMINATE_RECEIVED;
2941 event_cb = true;
2942 break;
2943 default:
2944 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2945 "Unhandled exception received...fw_ret_code=%d\n",
2946 fw_ret_code);
2947 break;
2948 }
2949
2950 if (event_cb) {
2951 params.ep_context = ep;
2952 params.cm_info = &ep->cm_info;
2953 ep->event_cb(ep->cb_context, ¶ms);
2954 }
2955}
2956
2957static void
2958qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn,
2959 struct qed_iwarp_ep *ep, u8 fw_return_code)
2960{
2961 struct qed_iwarp_cm_event_params params;
2962
2963 memset(¶ms, 0, sizeof(params));
2964 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
2965 params.ep_context = ep;
2966 params.cm_info = &ep->cm_info;
2967
2968 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
2969
2970 switch (fw_return_code) {
2971 case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET:
2972 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2973 "%s(0x%x) TCP connect got invalid packet\n",
2974 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2975 params.status = -ECONNRESET;
2976 break;
2977 case IWARP_CONN_ERROR_TCP_CONNECTION_RST:
2978 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2979 "%s(0x%x) TCP Connection Reset\n",
2980 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2981 params.status = -ECONNRESET;
2982 break;
2983 case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT:
2984 DP_NOTICE(p_hwfn, "%s(0x%x) TCP timeout\n",
2985 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2986 params.status = -EBUSY;
2987 break;
2988 case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER:
2989 DP_NOTICE(p_hwfn, "%s(0x%x) MPA not supported VER\n",
2990 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2991 params.status = -ECONNREFUSED;
2992 break;
2993 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
2994 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
2995 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2996 params.status = -ECONNRESET;
2997 break;
2998 default:
2999 DP_ERR(p_hwfn,
3000 "%s(0x%x) Unexpected return code tcp connect: %d\n",
3001 QED_IWARP_CONNECT_MODE_STRING(ep),
3002 ep->tcp_cid, fw_return_code);
3003 params.status = -ECONNRESET;
3004 break;
3005 }
3006
3007 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
3008 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
3009 qed_iwarp_return_ep(p_hwfn, ep);
3010 } else {
3011 ep->event_cb(ep->cb_context, ¶ms);
3012 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3013 list_del(&ep->list_entry);
3014 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3015 }
3016}
3017
3018static void
3019qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn,
3020 struct qed_iwarp_ep *ep, u8 fw_return_code)
3021{
3022 u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
3023
3024 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
3025
3026 qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle);
3027
3028 ep->syn = NULL;
3029
3030
3031 if (fw_return_code == RDMA_RETURN_OK)
3032 qed_iwarp_mpa_received(p_hwfn, ep);
3033 else
3034 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
3035 fw_return_code);
3036 } else {
3037 if (fw_return_code == RDMA_RETURN_OK)
3038 qed_iwarp_mpa_offload(p_hwfn, ep);
3039 else
3040 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
3041 fw_return_code);
3042 }
3043}
3044
3045static inline bool
3046qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
3047{
3048 if (!ep || (ep->sig != QED_EP_SIG)) {
3049 DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep);
3050 return false;
3051 }
3052
3053 return true;
3054}
3055
3056static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
3057 __le16 echo, union event_ring_data *data,
3058 u8 fw_return_code)
3059{
3060 struct qed_rdma_events events = p_hwfn->p_rdma_info->events;
3061 struct regpair *fw_handle = &data->rdma_data.async_handle;
3062 struct qed_iwarp_ep *ep = NULL;
3063 u16 srq_offset;
3064 u16 srq_id;
3065 u16 cid;
3066
3067 ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi,
3068 fw_handle->lo);
3069
3070 switch (fw_event_code) {
3071 case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE:
3072
3073 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3074 return -EINVAL;
3075 DP_VERBOSE(p_hwfn,
3076 QED_MSG_RDMA,
3077 "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n",
3078 ep->tcp_cid, fw_return_code);
3079 qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code);
3080 break;
3081 case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED:
3082 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3083 return -EINVAL;
3084 DP_VERBOSE(p_hwfn,
3085 QED_MSG_RDMA,
3086 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n",
3087 ep->cid, fw_return_code);
3088 qed_iwarp_exception_received(p_hwfn, ep, fw_return_code);
3089 break;
3090 case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE:
3091
3092 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3093 return -EINVAL;
3094 DP_VERBOSE(p_hwfn,
3095 QED_MSG_RDMA,
3096 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n",
3097 ep->cid, fw_return_code);
3098 qed_iwarp_qp_in_error(p_hwfn, ep, fw_return_code);
3099 break;
3100 case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED:
3101
3102 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3103 return -EINVAL;
3104 DP_VERBOSE(p_hwfn,
3105 QED_MSG_RDMA,
3106 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n",
3107 ep->cid, fw_return_code);
3108 qed_iwarp_mpa_reply_arrived(p_hwfn, ep);
3109 break;
3110 case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE:
3111 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
3112 return -EINVAL;
3113 DP_VERBOSE(p_hwfn,
3114 QED_MSG_RDMA,
3115 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n",
3116 ep->cid, fw_return_code);
3117 qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code);
3118 break;
3119 case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED:
3120 cid = (u16)le32_to_cpu(fw_handle->lo);
3121 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
3122 "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid);
3123 qed_iwarp_cid_cleaned(p_hwfn, cid);
3124
3125 break;
3126 case IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY:
3127 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY\n");
3128 srq_offset = p_hwfn->p_rdma_info->srq_id_offset;
3129
3130 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset;
3131 events.affiliated_event(events.context,
3132 QED_IWARP_EVENT_SRQ_EMPTY,
3133 &srq_id);
3134 break;
3135 case IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT:
3136 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT\n");
3137 srq_offset = p_hwfn->p_rdma_info->srq_id_offset;
3138
3139 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset;
3140 events.affiliated_event(events.context,
3141 QED_IWARP_EVENT_SRQ_LIMIT,
3142 &srq_id);
3143 break;
3144 case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW:
3145 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n");
3146
3147 p_hwfn->p_rdma_info->events.affiliated_event(
3148 p_hwfn->p_rdma_info->events.context,
3149 QED_IWARP_EVENT_CQ_OVERFLOW,
3150 (void *)fw_handle);
3151 break;
3152 default:
3153 DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n",
3154 fw_event_code);
3155 return -EINVAL;
3156 }
3157 return 0;
3158}
3159
3160int
3161qed_iwarp_create_listen(void *rdma_cxt,
3162 struct qed_iwarp_listen_in *iparams,
3163 struct qed_iwarp_listen_out *oparams)
3164{
3165 struct qed_hwfn *p_hwfn = rdma_cxt;
3166 struct qed_iwarp_listener *listener;
3167
3168 listener = kzalloc(sizeof(*listener), GFP_KERNEL);
3169 if (!listener)
3170 return -ENOMEM;
3171
3172 listener->ip_version = iparams->ip_version;
3173 memcpy(listener->ip_addr, iparams->ip_addr, sizeof(listener->ip_addr));
3174 listener->port = iparams->port;
3175 listener->vlan = iparams->vlan;
3176
3177 listener->event_cb = iparams->event_cb;
3178 listener->cb_context = iparams->cb_context;
3179 listener->max_backlog = iparams->max_backlog;
3180 oparams->handle = listener;
3181
3182 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3183 list_add_tail(&listener->list_entry,
3184 &p_hwfn->p_rdma_info->iwarp.listen_list);
3185 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3186
3187 DP_VERBOSE(p_hwfn,
3188 QED_MSG_RDMA,
3189 "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n",
3190 listener->event_cb,
3191 listener,
3192 listener->ip_addr[0],
3193 listener->ip_addr[1],
3194 listener->ip_addr[2],
3195 listener->ip_addr[3], listener->port, listener->vlan);
3196
3197 return 0;
3198}
3199
3200int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle)
3201{
3202 struct qed_iwarp_listener *listener = handle;
3203 struct qed_hwfn *p_hwfn = rdma_cxt;
3204
3205 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "handle=%p\n", handle);
3206
3207 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3208 list_del(&listener->list_entry);
3209 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
3210
3211 kfree(listener);
3212
3213 return 0;
3214}
3215
3216int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams)
3217{
3218 struct qed_hwfn *p_hwfn = rdma_cxt;
3219 struct qed_sp_init_data init_data;
3220 struct qed_spq_entry *p_ent;
3221 struct qed_iwarp_ep *ep;
3222 struct qed_rdma_qp *qp;
3223 int rc;
3224
3225 ep = iparams->ep_context;
3226 if (!ep) {
3227 DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n");
3228 return -EINVAL;
3229 }
3230
3231 qp = ep->qp;
3232
3233 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
3234 qp->icid, ep->tcp_cid);
3235
3236 memset(&init_data, 0, sizeof(init_data));
3237 init_data.cid = qp->icid;
3238 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
3239 init_data.comp_mode = QED_SPQ_MODE_CB;
3240
3241 rc = qed_sp_init_request(p_hwfn, &p_ent,
3242 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR,
3243 PROTOCOLID_IWARP, &init_data);
3244
3245 if (rc)
3246 return rc;
3247
3248 rc = qed_spq_post(p_hwfn, p_ent, NULL);
3249
3250 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc);
3251
3252 return rc;
3253}
3254
3255void
3256qed_iwarp_query_qp(struct qed_rdma_qp *qp,
3257 struct qed_rdma_query_qp_out_params *out_params)
3258{
3259 out_params->state = qed_iwarp2roce_state(qp->iwarp_state);
3260}
3261