1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 /* QLogic qed NIC Driver 3 * Copyright (c) 2015-2017 QLogic Corporation 4 * Copyright (c) 2019-2020 Marvell International Ltd. 5 */ 6 7 #include <linux/if_ether.h> 8 #include <linux/if_vlan.h> 9 #include <linux/ip.h> 10 #include <linux/ipv6.h> 11 #include <linux/spinlock.h> 12 #include <linux/tcp.h> 13 #include "qed_cxt.h" 14 #include "qed_hw.h" 15 #include "qed_ll2.h" 16 #include "qed_rdma.h" 17 #include "qed_reg_addr.h" 18 #include "qed_sp.h" 19 #include "qed_ooo.h" 20 21 #define QED_IWARP_ORD_DEFAULT 32 22 #define QED_IWARP_IRD_DEFAULT 32 23 #define QED_IWARP_MAX_FW_MSS 4120 24 25 #define QED_EP_SIG 0xecabcdef 26 27 struct mpa_v2_hdr { 28 __be16 ird; 29 __be16 ord; 30 }; 31 32 #define MPA_V2_PEER2PEER_MODEL 0x8000 33 #define MPA_V2_SEND_RTR 0x4000 /* on ird */ 34 #define MPA_V2_READ_RTR 0x4000 /* on ord */ 35 #define MPA_V2_WRITE_RTR 0x8000 36 #define MPA_V2_IRD_ORD_MASK 0x3FFF 37 38 #define MPA_REV2(_mpa_rev) ((_mpa_rev) == MPA_NEGOTIATION_TYPE_ENHANCED) 39 40 #define QED_IWARP_INVALID_TCP_CID 0xffffffff 41 42 #define QED_IWARP_RCV_WND_SIZE_DEF_BB_2P (200 * 1024) 43 #define QED_IWARP_RCV_WND_SIZE_DEF_BB_4P (100 * 1024) 44 #define QED_IWARP_RCV_WND_SIZE_DEF_AH_2P (150 * 1024) 45 #define QED_IWARP_RCV_WND_SIZE_DEF_AH_4P (90 * 1024) 46 47 #define QED_IWARP_RCV_WND_SIZE_MIN (0xffff) 48 #define TIMESTAMP_HEADER_SIZE (12) 49 #define QED_IWARP_MAX_FIN_RT_DEFAULT (2) 50 51 #define QED_IWARP_TS_EN BIT(0) 52 #define QED_IWARP_DA_EN BIT(1) 53 #define QED_IWARP_PARAM_CRC_NEEDED (1) 54 #define QED_IWARP_PARAM_P2P (1) 55 56 #define QED_IWARP_DEF_MAX_RT_TIME (0) 57 #define QED_IWARP_DEF_CWND_FACTOR (4) 58 #define QED_IWARP_DEF_KA_MAX_PROBE_CNT (5) 59 #define QED_IWARP_DEF_KA_TIMEOUT (1200000) /* 20 min */ 60 #define QED_IWARP_DEF_KA_INTERVAL (1000) /* 1 sec */ 61 62 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code, 63 __le16 echo, union event_ring_data *data, 64 u8 fw_return_code); 65 66 /* Override devinfo with iWARP specific values */ 67 void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn) 68 { 69 struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev; 70 71 dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE; 72 dev->max_qp = min_t(u32, 73 IWARP_MAX_QPS, 74 p_hwfn->p_rdma_info->num_qps) - 75 QED_IWARP_PREALLOC_CNT; 76 77 dev->max_cq = dev->max_qp; 78 79 dev->max_qp_resp_rd_atomic_resc = QED_IWARP_IRD_DEFAULT; 80 dev->max_qp_req_rd_atomic_resc = QED_IWARP_ORD_DEFAULT; 81 } 82 83 void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 84 { 85 p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP; 86 qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1); 87 p_hwfn->b_rdma_enabled_in_prs = true; 88 } 89 90 /* We have two cid maps, one for tcp which should be used only from passive 91 * syn processing and replacing a pre-allocated ep in the list. The second 92 * for active tcp and for QPs. 93 */ 94 static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid) 95 { 96 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 97 98 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 99 100 if (cid < QED_IWARP_PREALLOC_CNT) 101 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 102 cid); 103 else 104 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); 105 106 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 107 } 108 109 void 110 qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn, 111 struct iwarp_init_func_ramrod_data *p_ramrod) 112 { 113 p_ramrod->iwarp.ll2_ooo_q_index = 114 RESC_START(p_hwfn, QED_LL2_RAM_QUEUE) + 115 p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle; 116 117 p_ramrod->tcp.max_fin_rt = QED_IWARP_MAX_FIN_RT_DEFAULT; 118 119 return; 120 } 121 122 static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid) 123 { 124 int rc; 125 126 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 127 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); 128 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 129 if (rc) { 130 DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n"); 131 return rc; 132 } 133 *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 134 135 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid); 136 if (rc) 137 qed_iwarp_cid_cleaned(p_hwfn, *cid); 138 139 return rc; 140 } 141 142 static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid) 143 { 144 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 145 146 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 147 qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid); 148 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 149 } 150 151 /* This function allocates a cid for passive tcp (called from syn receive) 152 * the reason it's separate from the regular cid allocation is because it 153 * is assured that these cids already have ilt allocated. They are preallocated 154 * to ensure that we won't need to allocate memory during syn processing 155 */ 156 static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid) 157 { 158 int rc; 159 160 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 161 162 rc = qed_rdma_bmap_alloc_id(p_hwfn, 163 &p_hwfn->p_rdma_info->tcp_cid_map, cid); 164 165 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 166 167 if (rc) { 168 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 169 "can't allocate iwarp tcp cid max-count=%d\n", 170 p_hwfn->p_rdma_info->tcp_cid_map.max_count); 171 172 *cid = QED_IWARP_INVALID_TCP_CID; 173 return rc; 174 } 175 176 *cid += qed_cxt_get_proto_cid_start(p_hwfn, 177 p_hwfn->p_rdma_info->proto); 178 return 0; 179 } 180 181 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, 182 struct qed_rdma_qp *qp, 183 struct qed_rdma_create_qp_out_params *out_params) 184 { 185 struct iwarp_create_qp_ramrod_data *p_ramrod; 186 struct qed_sp_init_data init_data; 187 struct qed_spq_entry *p_ent; 188 u16 physical_queue; 189 u32 cid; 190 int rc; 191 192 qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 193 IWARP_SHARED_QUEUE_PAGE_SIZE, 194 &qp->shared_queue_phys_addr, 195 GFP_KERNEL); 196 if (!qp->shared_queue) 197 return -ENOMEM; 198 199 out_params->sq_pbl_virt = (u8 *)qp->shared_queue + 200 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; 201 out_params->sq_pbl_phys = qp->shared_queue_phys_addr + 202 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; 203 out_params->rq_pbl_virt = (u8 *)qp->shared_queue + 204 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; 205 out_params->rq_pbl_phys = qp->shared_queue_phys_addr + 206 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; 207 208 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 209 if (rc) 210 goto err1; 211 212 qp->icid = (u16)cid; 213 214 memset(&init_data, 0, sizeof(init_data)); 215 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 216 init_data.cid = qp->icid; 217 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 218 219 rc = qed_sp_init_request(p_hwfn, &p_ent, 220 IWARP_RAMROD_CMD_ID_CREATE_QP, 221 PROTOCOLID_IWARP, &init_data); 222 if (rc) 223 goto err2; 224 225 p_ramrod = &p_ent->ramrod.iwarp_create_qp; 226 227 SET_FIELD(p_ramrod->flags, 228 IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN, 229 qp->fmr_and_reserved_lkey); 230 231 SET_FIELD(p_ramrod->flags, 232 IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all); 233 234 SET_FIELD(p_ramrod->flags, 235 IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN, 236 qp->incoming_rdma_read_en); 237 238 SET_FIELD(p_ramrod->flags, 239 IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN, 240 qp->incoming_rdma_write_en); 241 242 SET_FIELD(p_ramrod->flags, 243 IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN, 244 qp->incoming_atomic_en); 245 246 SET_FIELD(p_ramrod->flags, 247 IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq); 248 249 p_ramrod->pd = cpu_to_le16(qp->pd); 250 p_ramrod->sq_num_pages = cpu_to_le16(qp->sq_num_pages); 251 p_ramrod->rq_num_pages = cpu_to_le16(qp->rq_num_pages); 252 253 p_ramrod->srq_id.srq_idx = cpu_to_le16(qp->srq_id); 254 p_ramrod->srq_id.opaque_fid = cpu_to_le16(p_hwfn->hw_info.opaque_fid); 255 p_ramrod->qp_handle_for_cqe.hi = qp->qp_handle.hi; 256 p_ramrod->qp_handle_for_cqe.lo = qp->qp_handle.lo; 257 258 p_ramrod->cq_cid_for_sq = 259 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id); 260 p_ramrod->cq_cid_for_rq = 261 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id); 262 263 p_ramrod->dpi = cpu_to_le16(qp->dpi); 264 265 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 266 p_ramrod->physical_q0 = cpu_to_le16(physical_queue); 267 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 268 p_ramrod->physical_q1 = cpu_to_le16(physical_queue); 269 270 rc = qed_spq_post(p_hwfn, p_ent, NULL); 271 if (rc) 272 goto err2; 273 274 return rc; 275 276 err2: 277 qed_iwarp_cid_cleaned(p_hwfn, cid); 278 err1: 279 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 280 IWARP_SHARED_QUEUE_PAGE_SIZE, 281 qp->shared_queue, qp->shared_queue_phys_addr); 282 283 return rc; 284 } 285 286 static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 287 { 288 struct iwarp_modify_qp_ramrod_data *p_ramrod; 289 struct qed_sp_init_data init_data; 290 struct qed_spq_entry *p_ent; 291 u16 flags, trans_to_state; 292 int rc; 293 294 /* Get SPQ entry */ 295 memset(&init_data, 0, sizeof(init_data)); 296 init_data.cid = qp->icid; 297 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 298 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 299 300 rc = qed_sp_init_request(p_hwfn, &p_ent, 301 IWARP_RAMROD_CMD_ID_MODIFY_QP, 302 p_hwfn->p_rdma_info->proto, &init_data); 303 if (rc) 304 return rc; 305 306 p_ramrod = &p_ent->ramrod.iwarp_modify_qp; 307 308 flags = le16_to_cpu(p_ramrod->flags); 309 SET_FIELD(flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN, 0x1); 310 p_ramrod->flags = cpu_to_le16(flags); 311 312 if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING) 313 trans_to_state = IWARP_MODIFY_QP_STATE_CLOSING; 314 else 315 trans_to_state = IWARP_MODIFY_QP_STATE_ERROR; 316 317 p_ramrod->transition_to_state = cpu_to_le16(trans_to_state); 318 319 rc = qed_spq_post(p_hwfn, p_ent, NULL); 320 321 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc); 322 323 return rc; 324 } 325 326 enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state) 327 { 328 switch (state) { 329 case QED_ROCE_QP_STATE_RESET: 330 case QED_ROCE_QP_STATE_INIT: 331 case QED_ROCE_QP_STATE_RTR: 332 return QED_IWARP_QP_STATE_IDLE; 333 case QED_ROCE_QP_STATE_RTS: 334 return QED_IWARP_QP_STATE_RTS; 335 case QED_ROCE_QP_STATE_SQD: 336 return QED_IWARP_QP_STATE_CLOSING; 337 case QED_ROCE_QP_STATE_ERR: 338 return QED_IWARP_QP_STATE_ERROR; 339 case QED_ROCE_QP_STATE_SQE: 340 return QED_IWARP_QP_STATE_TERMINATE; 341 default: 342 return QED_IWARP_QP_STATE_ERROR; 343 } 344 } 345 346 static enum qed_roce_qp_state 347 qed_iwarp2roce_state(enum qed_iwarp_qp_state state) 348 { 349 switch (state) { 350 case QED_IWARP_QP_STATE_IDLE: 351 return QED_ROCE_QP_STATE_INIT; 352 case QED_IWARP_QP_STATE_RTS: 353 return QED_ROCE_QP_STATE_RTS; 354 case QED_IWARP_QP_STATE_TERMINATE: 355 return QED_ROCE_QP_STATE_SQE; 356 case QED_IWARP_QP_STATE_CLOSING: 357 return QED_ROCE_QP_STATE_SQD; 358 case QED_IWARP_QP_STATE_ERROR: 359 return QED_ROCE_QP_STATE_ERR; 360 default: 361 return QED_ROCE_QP_STATE_ERR; 362 } 363 } 364 365 static const char * const iwarp_state_names[] = { 366 "IDLE", 367 "RTS", 368 "TERMINATE", 369 "CLOSING", 370 "ERROR", 371 }; 372 373 int 374 qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, 375 struct qed_rdma_qp *qp, 376 enum qed_iwarp_qp_state new_state, bool internal) 377 { 378 enum qed_iwarp_qp_state prev_iw_state; 379 bool modify_fw = false; 380 int rc = 0; 381 382 /* modify QP can be called from upper-layer or as a result of async 383 * RST/FIN... therefore need to protect 384 */ 385 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 386 prev_iw_state = qp->iwarp_state; 387 388 if (prev_iw_state == new_state) { 389 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 390 return 0; 391 } 392 393 switch (prev_iw_state) { 394 case QED_IWARP_QP_STATE_IDLE: 395 switch (new_state) { 396 case QED_IWARP_QP_STATE_RTS: 397 qp->iwarp_state = QED_IWARP_QP_STATE_RTS; 398 break; 399 case QED_IWARP_QP_STATE_ERROR: 400 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; 401 if (!internal) 402 modify_fw = true; 403 break; 404 default: 405 break; 406 } 407 break; 408 case QED_IWARP_QP_STATE_RTS: 409 switch (new_state) { 410 case QED_IWARP_QP_STATE_CLOSING: 411 if (!internal) 412 modify_fw = true; 413 414 qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING; 415 break; 416 case QED_IWARP_QP_STATE_ERROR: 417 if (!internal) 418 modify_fw = true; 419 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; 420 break; 421 default: 422 break; 423 } 424 break; 425 case QED_IWARP_QP_STATE_ERROR: 426 switch (new_state) { 427 case QED_IWARP_QP_STATE_IDLE: 428 429 qp->iwarp_state = new_state; 430 break; 431 case QED_IWARP_QP_STATE_CLOSING: 432 /* could happen due to race... do nothing.... */ 433 break; 434 default: 435 rc = -EINVAL; 436 } 437 break; 438 case QED_IWARP_QP_STATE_TERMINATE: 439 case QED_IWARP_QP_STATE_CLOSING: 440 qp->iwarp_state = new_state; 441 break; 442 default: 443 break; 444 } 445 446 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n", 447 qp->icid, 448 iwarp_state_names[prev_iw_state], 449 iwarp_state_names[qp->iwarp_state], 450 internal ? "internal" : ""); 451 452 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 453 454 if (modify_fw) 455 rc = qed_iwarp_modify_fw(p_hwfn, qp); 456 457 return rc; 458 } 459 460 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 461 { 462 struct qed_sp_init_data init_data; 463 struct qed_spq_entry *p_ent; 464 int rc; 465 466 /* Get SPQ entry */ 467 memset(&init_data, 0, sizeof(init_data)); 468 init_data.cid = qp->icid; 469 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 470 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 471 472 rc = qed_sp_init_request(p_hwfn, &p_ent, 473 IWARP_RAMROD_CMD_ID_DESTROY_QP, 474 p_hwfn->p_rdma_info->proto, &init_data); 475 if (rc) 476 return rc; 477 478 rc = qed_spq_post(p_hwfn, p_ent, NULL); 479 480 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc); 481 482 return rc; 483 } 484 485 static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn, 486 struct qed_iwarp_ep *ep, 487 bool remove_from_active_list) 488 { 489 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 490 sizeof(*ep->ep_buffer_virt), 491 ep->ep_buffer_virt, ep->ep_buffer_phys); 492 493 if (remove_from_active_list) { 494 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 495 list_del(&ep->list_entry); 496 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 497 } 498 499 if (ep->qp) 500 ep->qp->ep = NULL; 501 502 kfree(ep); 503 } 504 505 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 506 { 507 struct qed_iwarp_ep *ep = qp->ep; 508 int wait_count = 0; 509 int rc = 0; 510 511 if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) { 512 rc = qed_iwarp_modify_qp(p_hwfn, qp, 513 QED_IWARP_QP_STATE_ERROR, false); 514 if (rc) 515 return rc; 516 } 517 518 /* Make sure ep is closed before returning and freeing memory. */ 519 if (ep) { 520 while (READ_ONCE(ep->state) != QED_IWARP_EP_CLOSED && 521 wait_count++ < 200) 522 msleep(100); 523 524 if (ep->state != QED_IWARP_EP_CLOSED) 525 DP_NOTICE(p_hwfn, "ep state close timeout state=%x\n", 526 ep->state); 527 528 qed_iwarp_destroy_ep(p_hwfn, ep, false); 529 } 530 531 rc = qed_iwarp_fw_destroy(p_hwfn, qp); 532 533 if (qp->shared_queue) 534 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 535 IWARP_SHARED_QUEUE_PAGE_SIZE, 536 qp->shared_queue, qp->shared_queue_phys_addr); 537 538 return rc; 539 } 540 541 static int 542 qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out) 543 { 544 struct qed_iwarp_ep *ep; 545 int rc; 546 547 ep = kzalloc(sizeof(*ep), GFP_KERNEL); 548 if (!ep) 549 return -ENOMEM; 550 551 ep->state = QED_IWARP_EP_INIT; 552 553 ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 554 sizeof(*ep->ep_buffer_virt), 555 &ep->ep_buffer_phys, 556 GFP_KERNEL); 557 if (!ep->ep_buffer_virt) { 558 rc = -ENOMEM; 559 goto err; 560 } 561 562 ep->sig = QED_EP_SIG; 563 564 *ep_out = ep; 565 566 return 0; 567 568 err: 569 kfree(ep); 570 return rc; 571 } 572 573 static void 574 qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn, 575 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod) 576 { 577 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n", 578 p_tcp_ramrod->tcp.local_mac_addr_lo, 579 p_tcp_ramrod->tcp.local_mac_addr_mid, 580 p_tcp_ramrod->tcp.local_mac_addr_hi, 581 p_tcp_ramrod->tcp.remote_mac_addr_lo, 582 p_tcp_ramrod->tcp.remote_mac_addr_mid, 583 p_tcp_ramrod->tcp.remote_mac_addr_hi); 584 585 if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) { 586 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 587 "local_ip=%pI4h:%x, remote_ip=%pI4h:%x, vlan=%x\n", 588 p_tcp_ramrod->tcp.local_ip, 589 p_tcp_ramrod->tcp.local_port, 590 p_tcp_ramrod->tcp.remote_ip, 591 p_tcp_ramrod->tcp.remote_port, 592 p_tcp_ramrod->tcp.vlan_id); 593 } else { 594 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 595 "local_ip=%pI6:%x, remote_ip=%pI6:%x, vlan=%x\n", 596 p_tcp_ramrod->tcp.local_ip, 597 p_tcp_ramrod->tcp.local_port, 598 p_tcp_ramrod->tcp.remote_ip, 599 p_tcp_ramrod->tcp.remote_port, 600 p_tcp_ramrod->tcp.vlan_id); 601 } 602 603 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 604 "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n", 605 p_tcp_ramrod->tcp.flow_label, 606 p_tcp_ramrod->tcp.ttl, 607 p_tcp_ramrod->tcp.tos_or_tc, 608 p_tcp_ramrod->tcp.mss, 609 p_tcp_ramrod->tcp.rcv_wnd_scale, 610 p_tcp_ramrod->tcp.connect_mode, 611 p_tcp_ramrod->tcp.flags); 612 613 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n", 614 p_tcp_ramrod->tcp.syn_ip_payload_length, 615 p_tcp_ramrod->tcp.syn_phy_addr_lo, 616 p_tcp_ramrod->tcp.syn_phy_addr_hi); 617 } 618 619 static int 620 qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 621 { 622 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 623 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod; 624 struct tcp_offload_params_opt2 *tcp; 625 struct qed_sp_init_data init_data; 626 struct qed_spq_entry *p_ent; 627 dma_addr_t async_output_phys; 628 dma_addr_t in_pdata_phys; 629 u16 physical_q; 630 u16 flags = 0; 631 u8 tcp_flags; 632 int rc; 633 int i; 634 635 memset(&init_data, 0, sizeof(init_data)); 636 init_data.cid = ep->tcp_cid; 637 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 638 if (ep->connect_mode == TCP_CONNECT_PASSIVE) 639 init_data.comp_mode = QED_SPQ_MODE_CB; 640 else 641 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 642 643 rc = qed_sp_init_request(p_hwfn, &p_ent, 644 IWARP_RAMROD_CMD_ID_TCP_OFFLOAD, 645 PROTOCOLID_IWARP, &init_data); 646 if (rc) 647 return rc; 648 649 p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload; 650 651 in_pdata_phys = ep->ep_buffer_phys + 652 offsetof(struct qed_iwarp_ep_memory, in_pdata); 653 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr, 654 in_pdata_phys); 655 656 p_tcp_ramrod->iwarp.incoming_ulp_buffer.len = 657 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata)); 658 659 async_output_phys = ep->ep_buffer_phys + 660 offsetof(struct qed_iwarp_ep_memory, async_output); 661 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf, 662 async_output_phys); 663 664 p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep)); 665 p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep)); 666 667 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 668 p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q); 669 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 670 p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q); 671 p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev; 672 673 tcp = &p_tcp_ramrod->tcp; 674 qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi, 675 &tcp->remote_mac_addr_mid, 676 &tcp->remote_mac_addr_lo, ep->remote_mac_addr); 677 qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid, 678 &tcp->local_mac_addr_lo, ep->local_mac_addr); 679 680 tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan); 681 682 tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags; 683 684 SET_FIELD(flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN, 685 !!(tcp_flags & QED_IWARP_TS_EN)); 686 687 SET_FIELD(flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN, 688 !!(tcp_flags & QED_IWARP_DA_EN)); 689 690 tcp->flags = cpu_to_le16(flags); 691 tcp->ip_version = ep->cm_info.ip_version; 692 693 for (i = 0; i < 4; i++) { 694 tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]); 695 tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]); 696 } 697 698 tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port); 699 tcp->local_port = cpu_to_le16(ep->cm_info.local_port); 700 tcp->mss = cpu_to_le16(ep->mss); 701 tcp->flow_label = 0; 702 tcp->ttl = 0x40; 703 tcp->tos_or_tc = 0; 704 705 tcp->max_rt_time = QED_IWARP_DEF_MAX_RT_TIME; 706 tcp->cwnd = cpu_to_le32(QED_IWARP_DEF_CWND_FACTOR * ep->mss); 707 tcp->ka_max_probe_cnt = QED_IWARP_DEF_KA_MAX_PROBE_CNT; 708 tcp->ka_timeout = cpu_to_le32(QED_IWARP_DEF_KA_TIMEOUT); 709 tcp->ka_interval = cpu_to_le32(QED_IWARP_DEF_KA_INTERVAL); 710 711 tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale; 712 tcp->connect_mode = ep->connect_mode; 713 714 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 715 tcp->syn_ip_payload_length = 716 cpu_to_le16(ep->syn_ip_payload_length); 717 tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr); 718 tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr); 719 } 720 721 qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod); 722 723 rc = qed_spq_post(p_hwfn, p_ent, NULL); 724 725 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 726 "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc); 727 728 return rc; 729 } 730 731 static void 732 qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 733 { 734 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 735 struct qed_iwarp_cm_event_params params; 736 struct mpa_v2_hdr *mpa_v2; 737 union async_output *async_data; 738 u16 mpa_ord, mpa_ird; 739 u8 mpa_hdr_size = 0; 740 u16 ulp_data_len; 741 u8 mpa_rev; 742 743 async_data = &ep->ep_buffer_virt->async_output; 744 745 mpa_rev = async_data->mpa_request.mpa_handshake_mode; 746 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 747 "private_data_len=%x handshake_mode=%x private_data=(%x)\n", 748 async_data->mpa_request.ulp_data_len, 749 mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata))); 750 751 if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) { 752 /* Read ord/ird values from private data buffer */ 753 mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata; 754 mpa_hdr_size = sizeof(*mpa_v2); 755 756 mpa_ord = ntohs(mpa_v2->ord); 757 mpa_ird = ntohs(mpa_v2->ird); 758 759 /* Temprary store in cm_info incoming ord/ird requested, later 760 * replace with negotiated value during accept 761 */ 762 ep->cm_info.ord = (u8)min_t(u16, 763 (mpa_ord & MPA_V2_IRD_ORD_MASK), 764 QED_IWARP_ORD_DEFAULT); 765 766 ep->cm_info.ird = (u8)min_t(u16, 767 (mpa_ird & MPA_V2_IRD_ORD_MASK), 768 QED_IWARP_IRD_DEFAULT); 769 770 /* Peer2Peer negotiation */ 771 ep->rtr_type = MPA_RTR_TYPE_NONE; 772 if (mpa_ird & MPA_V2_PEER2PEER_MODEL) { 773 if (mpa_ord & MPA_V2_WRITE_RTR) 774 ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE; 775 776 if (mpa_ord & MPA_V2_READ_RTR) 777 ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ; 778 779 if (mpa_ird & MPA_V2_SEND_RTR) 780 ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND; 781 782 ep->rtr_type &= iwarp_info->rtr_type; 783 784 /* if we're left with no match send our capabilities */ 785 if (ep->rtr_type == MPA_RTR_TYPE_NONE) 786 ep->rtr_type = iwarp_info->rtr_type; 787 } 788 789 ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED; 790 } else { 791 ep->cm_info.ord = QED_IWARP_ORD_DEFAULT; 792 ep->cm_info.ird = QED_IWARP_IRD_DEFAULT; 793 ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC; 794 } 795 796 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 797 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n", 798 mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type, 799 async_data->mpa_request.ulp_data_len, mpa_hdr_size); 800 801 /* Strip mpa v2 hdr from private data before sending to upper layer */ 802 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size; 803 804 ulp_data_len = le16_to_cpu(async_data->mpa_request.ulp_data_len); 805 ep->cm_info.private_data_len = ulp_data_len - mpa_hdr_size; 806 807 params.event = QED_IWARP_EVENT_MPA_REQUEST; 808 params.cm_info = &ep->cm_info; 809 params.ep_context = ep; 810 params.status = 0; 811 812 ep->state = QED_IWARP_EP_MPA_REQ_RCVD; 813 ep->event_cb(ep->cb_context, ¶ms); 814 } 815 816 static int 817 qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 818 { 819 struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod; 820 struct mpa_outgoing_params *common; 821 struct qed_iwarp_info *iwarp_info; 822 struct qed_sp_init_data init_data; 823 dma_addr_t async_output_phys; 824 struct qed_spq_entry *p_ent; 825 dma_addr_t out_pdata_phys; 826 dma_addr_t in_pdata_phys; 827 struct qed_rdma_qp *qp; 828 bool reject; 829 u32 val; 830 int rc; 831 832 if (!ep) 833 return -EINVAL; 834 835 qp = ep->qp; 836 reject = !qp; 837 838 memset(&init_data, 0, sizeof(init_data)); 839 init_data.cid = reject ? ep->tcp_cid : qp->icid; 840 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 841 842 if (ep->connect_mode == TCP_CONNECT_ACTIVE) 843 init_data.comp_mode = QED_SPQ_MODE_CB; 844 else 845 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 846 847 rc = qed_sp_init_request(p_hwfn, &p_ent, 848 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD, 849 PROTOCOLID_IWARP, &init_data); 850 if (rc) 851 return rc; 852 853 p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload; 854 common = &p_mpa_ramrod->common; 855 856 out_pdata_phys = ep->ep_buffer_phys + 857 offsetof(struct qed_iwarp_ep_memory, out_pdata); 858 DMA_REGPAIR_LE(common->outgoing_ulp_buffer.addr, out_pdata_phys); 859 860 val = ep->cm_info.private_data_len; 861 common->outgoing_ulp_buffer.len = cpu_to_le16(val); 862 common->crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed; 863 864 common->out_rq.ord = cpu_to_le32(ep->cm_info.ord); 865 common->out_rq.ird = cpu_to_le32(ep->cm_info.ird); 866 867 val = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid; 868 p_mpa_ramrod->tcp_cid = cpu_to_le32(val); 869 870 in_pdata_phys = ep->ep_buffer_phys + 871 offsetof(struct qed_iwarp_ep_memory, in_pdata); 872 p_mpa_ramrod->tcp_connect_side = ep->connect_mode; 873 DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr, 874 in_pdata_phys); 875 p_mpa_ramrod->incoming_ulp_buffer.len = 876 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata)); 877 async_output_phys = ep->ep_buffer_phys + 878 offsetof(struct qed_iwarp_ep_memory, async_output); 879 DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf, 880 async_output_phys); 881 p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep)); 882 p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep)); 883 884 if (!reject) { 885 DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr, 886 qp->shared_queue_phys_addr); 887 p_mpa_ramrod->stats_counter_id = 888 RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue; 889 } else { 890 common->reject = 1; 891 } 892 893 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 894 p_mpa_ramrod->rcv_wnd = cpu_to_le16(iwarp_info->rcv_wnd_size); 895 p_mpa_ramrod->mode = ep->mpa_rev; 896 SET_FIELD(p_mpa_ramrod->rtr_pref, 897 IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type); 898 899 ep->state = QED_IWARP_EP_MPA_OFFLOADED; 900 rc = qed_spq_post(p_hwfn, p_ent, NULL); 901 if (!reject) 902 ep->cid = qp->icid; /* Now they're migrated. */ 903 904 DP_VERBOSE(p_hwfn, 905 QED_MSG_RDMA, 906 "QP(0x%x) EP(0x%x) MPA Offload rc = %d IRD=0x%x ORD=0x%x rtr_type=%d mpa_rev=%d reject=%d\n", 907 reject ? 0xffff : qp->icid, 908 ep->tcp_cid, 909 rc, 910 ep->cm_info.ird, 911 ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject); 912 return rc; 913 } 914 915 static void 916 qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 917 { 918 ep->state = QED_IWARP_EP_INIT; 919 if (ep->qp) 920 ep->qp->ep = NULL; 921 ep->qp = NULL; 922 memset(&ep->cm_info, 0, sizeof(ep->cm_info)); 923 924 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) { 925 /* We don't care about the return code, it's ok if tcp_cid 926 * remains invalid...in this case we'll defer allocation 927 */ 928 qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid); 929 } 930 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 931 932 list_move_tail(&ep->list_entry, 933 &p_hwfn->p_rdma_info->iwarp.ep_free_list); 934 935 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 936 } 937 938 static void 939 qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 940 { 941 struct mpa_v2_hdr *mpa_v2_params; 942 union async_output *async_data; 943 u16 mpa_ird, mpa_ord; 944 u8 mpa_data_size = 0; 945 u16 ulp_data_len; 946 947 if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) { 948 mpa_v2_params = 949 (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata); 950 mpa_data_size = sizeof(*mpa_v2_params); 951 mpa_ird = ntohs(mpa_v2_params->ird); 952 mpa_ord = ntohs(mpa_v2_params->ord); 953 954 ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK); 955 ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK); 956 } 957 958 async_data = &ep->ep_buffer_virt->async_output; 959 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size; 960 961 ulp_data_len = le16_to_cpu(async_data->mpa_response.ulp_data_len); 962 ep->cm_info.private_data_len = ulp_data_len - mpa_data_size; 963 } 964 965 static void 966 qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 967 { 968 struct qed_iwarp_cm_event_params params; 969 970 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 971 DP_NOTICE(p_hwfn, 972 "MPA reply event not expected on passive side!\n"); 973 return; 974 } 975 976 params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY; 977 978 qed_iwarp_parse_private_data(p_hwfn, ep); 979 980 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 981 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 982 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 983 984 params.cm_info = &ep->cm_info; 985 params.ep_context = ep; 986 params.status = 0; 987 988 ep->mpa_reply_processed = true; 989 990 ep->event_cb(ep->cb_context, ¶ms); 991 } 992 993 #define QED_IWARP_CONNECT_MODE_STRING(ep) \ 994 ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active" 995 996 /* Called as a result of the event: 997 * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE 998 */ 999 static void 1000 qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn, 1001 struct qed_iwarp_ep *ep, u8 fw_return_code) 1002 { 1003 struct qed_iwarp_cm_event_params params; 1004 1005 if (ep->connect_mode == TCP_CONNECT_ACTIVE) 1006 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE; 1007 else 1008 params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE; 1009 1010 if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed) 1011 qed_iwarp_parse_private_data(p_hwfn, ep); 1012 1013 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1014 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 1015 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 1016 1017 params.cm_info = &ep->cm_info; 1018 1019 params.ep_context = ep; 1020 1021 switch (fw_return_code) { 1022 case RDMA_RETURN_OK: 1023 ep->qp->max_rd_atomic_req = ep->cm_info.ord; 1024 ep->qp->max_rd_atomic_resp = ep->cm_info.ird; 1025 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1); 1026 ep->state = QED_IWARP_EP_ESTABLISHED; 1027 params.status = 0; 1028 break; 1029 case IWARP_CONN_ERROR_MPA_TIMEOUT: 1030 DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n", 1031 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1032 params.status = -EBUSY; 1033 break; 1034 case IWARP_CONN_ERROR_MPA_ERROR_REJECT: 1035 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n", 1036 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1037 params.status = -ECONNREFUSED; 1038 break; 1039 case IWARP_CONN_ERROR_MPA_RST: 1040 DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n", 1041 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid, 1042 ep->tcp_cid); 1043 params.status = -ECONNRESET; 1044 break; 1045 case IWARP_CONN_ERROR_MPA_FIN: 1046 DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n", 1047 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1048 params.status = -ECONNREFUSED; 1049 break; 1050 case IWARP_CONN_ERROR_MPA_INSUF_IRD: 1051 DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n", 1052 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1053 params.status = -ECONNREFUSED; 1054 break; 1055 case IWARP_CONN_ERROR_MPA_RTR_MISMATCH: 1056 DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n", 1057 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1058 params.status = -ECONNREFUSED; 1059 break; 1060 case IWARP_CONN_ERROR_MPA_INVALID_PACKET: 1061 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n", 1062 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1063 params.status = -ECONNREFUSED; 1064 break; 1065 case IWARP_CONN_ERROR_MPA_LOCAL_ERROR: 1066 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n", 1067 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1068 params.status = -ECONNREFUSED; 1069 break; 1070 case IWARP_CONN_ERROR_MPA_TERMINATE: 1071 DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n", 1072 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1073 params.status = -ECONNREFUSED; 1074 break; 1075 default: 1076 params.status = -ECONNRESET; 1077 break; 1078 } 1079 1080 if (fw_return_code != RDMA_RETURN_OK) 1081 /* paired with READ_ONCE in destroy_qp */ 1082 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED); 1083 1084 ep->event_cb(ep->cb_context, ¶ms); 1085 1086 /* on passive side, if there is no associated QP (REJECT) we need to 1087 * return the ep to the pool, (in the regular case we add an element 1088 * in accept instead of this one. 1089 * In both cases we need to remove it from the ep_list. 1090 */ 1091 if (fw_return_code != RDMA_RETURN_OK) { 1092 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 1093 if ((ep->connect_mode == TCP_CONNECT_PASSIVE) && 1094 (!ep->qp)) { /* Rejected */ 1095 qed_iwarp_return_ep(p_hwfn, ep); 1096 } else { 1097 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1098 list_del(&ep->list_entry); 1099 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1100 } 1101 } 1102 } 1103 1104 static void 1105 qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn, 1106 struct qed_iwarp_ep *ep, u8 *mpa_data_size) 1107 { 1108 struct mpa_v2_hdr *mpa_v2_params; 1109 u16 mpa_ird, mpa_ord; 1110 1111 *mpa_data_size = 0; 1112 if (MPA_REV2(ep->mpa_rev)) { 1113 mpa_v2_params = 1114 (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata; 1115 *mpa_data_size = sizeof(*mpa_v2_params); 1116 1117 mpa_ird = (u16)ep->cm_info.ird; 1118 mpa_ord = (u16)ep->cm_info.ord; 1119 1120 if (ep->rtr_type != MPA_RTR_TYPE_NONE) { 1121 mpa_ird |= MPA_V2_PEER2PEER_MODEL; 1122 1123 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND) 1124 mpa_ird |= MPA_V2_SEND_RTR; 1125 1126 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE) 1127 mpa_ord |= MPA_V2_WRITE_RTR; 1128 1129 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) 1130 mpa_ord |= MPA_V2_READ_RTR; 1131 } 1132 1133 mpa_v2_params->ird = htons(mpa_ird); 1134 mpa_v2_params->ord = htons(mpa_ord); 1135 1136 DP_VERBOSE(p_hwfn, 1137 QED_MSG_RDMA, 1138 "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n", 1139 mpa_v2_params->ird, 1140 mpa_v2_params->ord, 1141 *((u32 *)mpa_v2_params), 1142 mpa_ord & MPA_V2_IRD_ORD_MASK, 1143 mpa_ird & MPA_V2_IRD_ORD_MASK, 1144 !!(mpa_ird & MPA_V2_PEER2PEER_MODEL), 1145 !!(mpa_ird & MPA_V2_SEND_RTR), 1146 !!(mpa_ord & MPA_V2_WRITE_RTR), 1147 !!(mpa_ord & MPA_V2_READ_RTR)); 1148 } 1149 } 1150 1151 int qed_iwarp_connect(void *rdma_cxt, 1152 struct qed_iwarp_connect_in *iparams, 1153 struct qed_iwarp_connect_out *oparams) 1154 { 1155 struct qed_hwfn *p_hwfn = rdma_cxt; 1156 struct qed_iwarp_info *iwarp_info; 1157 struct qed_iwarp_ep *ep; 1158 u8 mpa_data_size = 0; 1159 u32 cid; 1160 int rc; 1161 1162 if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) || 1163 (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) { 1164 DP_NOTICE(p_hwfn, 1165 "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n", 1166 iparams->qp->icid, iparams->cm_info.ord, 1167 iparams->cm_info.ird); 1168 1169 return -EINVAL; 1170 } 1171 1172 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1173 1174 /* Allocate ep object */ 1175 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 1176 if (rc) 1177 return rc; 1178 1179 rc = qed_iwarp_create_ep(p_hwfn, &ep); 1180 if (rc) 1181 goto err; 1182 1183 ep->tcp_cid = cid; 1184 1185 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1186 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list); 1187 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1188 1189 ep->qp = iparams->qp; 1190 ep->qp->ep = ep; 1191 ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr); 1192 ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr); 1193 memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info)); 1194 1195 ep->cm_info.ord = iparams->cm_info.ord; 1196 ep->cm_info.ird = iparams->cm_info.ird; 1197 1198 ep->rtr_type = iwarp_info->rtr_type; 1199 if (!iwarp_info->peer2peer) 1200 ep->rtr_type = MPA_RTR_TYPE_NONE; 1201 1202 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0)) 1203 ep->cm_info.ord = 1; 1204 1205 ep->mpa_rev = iwarp_info->mpa_rev; 1206 1207 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1208 1209 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1210 ep->cm_info.private_data_len = iparams->cm_info.private_data_len + 1211 mpa_data_size; 1212 1213 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1214 iparams->cm_info.private_data, 1215 iparams->cm_info.private_data_len); 1216 1217 ep->mss = iparams->mss; 1218 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss); 1219 1220 ep->event_cb = iparams->event_cb; 1221 ep->cb_context = iparams->cb_context; 1222 ep->connect_mode = TCP_CONNECT_ACTIVE; 1223 1224 oparams->ep_context = ep; 1225 1226 rc = qed_iwarp_tcp_offload(p_hwfn, ep); 1227 1228 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n", 1229 iparams->qp->icid, ep->tcp_cid, rc); 1230 1231 if (rc) { 1232 qed_iwarp_destroy_ep(p_hwfn, ep, true); 1233 goto err; 1234 } 1235 1236 return rc; 1237 err: 1238 qed_iwarp_cid_cleaned(p_hwfn, cid); 1239 1240 return rc; 1241 } 1242 1243 static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn) 1244 { 1245 struct qed_iwarp_ep *ep = NULL; 1246 int rc; 1247 1248 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1249 1250 if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) { 1251 DP_ERR(p_hwfn, "Ep list is empty\n"); 1252 goto out; 1253 } 1254 1255 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list, 1256 struct qed_iwarp_ep, list_entry); 1257 1258 /* in some cases we could have failed allocating a tcp cid when added 1259 * from accept / failure... retry now..this is not the common case. 1260 */ 1261 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) { 1262 rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid); 1263 1264 /* if we fail we could look for another entry with a valid 1265 * tcp_cid, but since we don't expect to reach this anyway 1266 * it's not worth the handling 1267 */ 1268 if (rc) { 1269 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 1270 ep = NULL; 1271 goto out; 1272 } 1273 } 1274 1275 list_del(&ep->list_entry); 1276 1277 out: 1278 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1279 return ep; 1280 } 1281 1282 #define QED_IWARP_MAX_CID_CLEAN_TIME 100 1283 #define QED_IWARP_MAX_NO_PROGRESS_CNT 5 1284 1285 /* This function waits for all the bits of a bmap to be cleared, as long as 1286 * there is progress ( i.e. the number of bits left to be cleared decreases ) 1287 * the function continues. 1288 */ 1289 static int 1290 qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap) 1291 { 1292 int prev_weight = 0; 1293 int wait_count = 0; 1294 int weight = 0; 1295 1296 weight = bitmap_weight(bmap->bitmap, bmap->max_count); 1297 prev_weight = weight; 1298 1299 while (weight) { 1300 /* If the HW device is during recovery, all resources are 1301 * immediately reset without receiving a per-cid indication 1302 * from HW. In this case we don't expect the cid_map to be 1303 * cleared. 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 1329 static 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 /* Now free the tcp cids from the main cid map */ 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 /* Now wait for all cids to be completed */ 1344 return qed_iwarp_wait_cid_map_cleared(p_hwfn, 1345 &p_hwfn->p_rdma_info->cid_map); 1346 } 1347 1348 static 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 1373 static 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 /* During initialization we allocate from the main pool, 1388 * afterwards we allocate only from the tcp_cid. 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 /* We don't care about the return code, it's ok if 1397 * tcp_cid remains invalid...in this case we'll 1398 * defer allocation 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 1413 err: 1414 qed_iwarp_destroy_ep(p_hwfn, ep, false); 1415 1416 return rc; 1417 } 1418 1419 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn) 1420 { 1421 int rc; 1422 1423 /* Allocate bitmap for tcp cid. These are used by passive side 1424 * to ensure it can allocate a tcp cid during dpc that was 1425 * pre-acquired and doesn't require dynamic allocation of ilt 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 1445 void 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 1456 int 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 /* Negotiate ord/ird: if upperlayer requested ord larger than 1490 * ird advertised by remote, we need to decrease our ord 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 /* Update cm_info ord/ird to be negotiated values */ 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 1521 int 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 1550 static void 1551 qed_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 1575 static int 1576 qed_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 1595 static bool 1596 qed_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 1627 static struct qed_iwarp_listener * 1628 qed_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 1665 static int 1666 qed_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 1773 static 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 1792 enum 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 /* Pad to multiple of 4 */ 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 /* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */ 1810 #define QED_IWARP_MAX_BDS_PER_FPDU 3 1811 1812 static 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 1818 static int 1819 qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn, 1820 struct qed_iwarp_fpdu *fpdu, 1821 struct qed_iwarp_ll2_buff *buf); 1822 1823 static enum qed_iwarp_mpa_pkt_type 1824 qed_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 /* special case of one byte remaining... 1837 * lower byte will be read next packet 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 1853 out: 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 1861 static void 1862 qed_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; /* complete fpdu */ 1881 1882 fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes; 1883 } 1884 1885 static int 1886 qed_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 /* need to copy the data from the partial packet stored in fpdu 1896 * to the new buf, for this we also need to move the data currently 1897 * placed on the buf. The assumption is that the buffer is big enough 1898 * since fpdu_length <= mss, we use an intermediate buffer since 1899 * we may need to copy the new data to an overlapping location 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 /* If we managed to post the buffer copy the data to the new buffer 1923 * o/w this will occur in the next round... 1924 */ 1925 memcpy((u8 *)(buf->data), tmp_buf, 1926 fpdu->mpa_frag_len + tcp_payload_size); 1927 1928 fpdu->mpa_buf = buf; 1929 /* fpdu->pkt_hdr remains as is */ 1930 /* fpdu->mpa_frag is overridden with new buf */ 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 1946 static void 1947 qed_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 /* Update incomplete packets if needed */ 1953 if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) { 1954 /* Missing lower byte is now available */ 1955 mpa_len = fpdu->fpdu_length | *mpa_data; 1956 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); 1957 /* one byte of hdr */ 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 /* This function is used to recycle a buffer using the ll2 drop option. It 1972 * uses the mechanism to ensure that all buffers posted to tx before this one 1973 * were completed. The buffer sent here will be sent as a cookie in the tx 1974 * completion function and can then be reposted to rx chain when done. The flow 1975 * that requires this is the flow where a FPDU splits over more than 3 tcp 1976 * segments. In this case the driver needs to re-post a rx buffer instead of 1977 * the one received, but driver can't simply repost a buffer it copied from 1978 * as there is a case where the buffer was originally a packed FPDU, and is 1979 * partially posted to FW. Driver needs to ensure FW is done with it. 1980 */ 1981 static int 1982 qed_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 2015 static int 2016 qed_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 /* vlan overload with enum iwarp_ll2_tx_queues */ 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 2051 static int 2052 qed_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 /* An unaligned packet means it's split over two tcp segments. So the 2066 * complete packet requires 3 bds, one for the header, one for the 2067 * part of the fpdu of the first tcp segment, and the last fragment 2068 * will point to the remainder of the fpdu. A packed pdu, requires only 2069 * two bds, one for the header and one for the data. 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; /* offset in words */ 2074 2075 /* Send the mpa_buf only with the last fpdu (in case of packed) */ 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 /* vlan overload with enum iwarp_ll2_tx_queues */ 2086 tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE; 2087 2088 /* special case of unaligned packet and not packed, need to send 2089 * both buffers as cookie to release. 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 /* Set first fragment to header */ 2097 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 2098 if (rc) 2099 goto out; 2100 2101 /* Set second fragment to first part of packet */ 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 /* Set third fragment to second part of the packet */ 2114 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, 2115 ll2_handle, 2116 buf->data_phys_addr + 2117 first_mpa_offset, 2118 fpdu->incomplete_bytes); 2119 out: 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 2131 static void 2132 qed_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 /* This function is called when an unaligned or incomplete MPA packet arrives 2147 * driver needs to align the packet, perhaps using previous data and send 2148 * it down to FW once it is aligned. 2149 */ 2150 static int 2151 qed_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) { /* something corrupt with cid, post rx back */ 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 /* special handling of fpdu split over more 2226 * than 2 segments 2227 */ 2228 if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) { 2229 rc = qed_iwarp_win_right_edge(p_hwfn, 2230 fpdu); 2231 /* packet will be re-processed later */ 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) /* packet will be re-processed later */ 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 /* don't reset fpdu -> we need it for next 2253 * classify 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 /* The framed PDU was sent - no more incomplete bytes */ 2263 fpdu->incomplete_bytes = 0; 2264 break; 2265 } 2266 } while (mpa_buf->tcp_payload_len && !rc); 2267 2268 return rc; 2269 2270 err: 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 2277 static 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 /* busy means break and continue processing later, don't 2291 * remove the buf from the pending list. 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) { /* different error, don't continue */ 2300 DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc); 2301 break; 2302 } 2303 } 2304 } 2305 2306 static void 2307 qed_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; 2347 err: 2348 qed_iwarp_ll2_post_rx(p_hwfn, data->cookie, 2349 iwarp_info->ll2_mpa_handle); 2350 } 2351 2352 static void 2353 qed_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 /* Check if packet was received with errors... */ 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 /* Check if there is a listener for this 4-tuple+vlan */ 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 /* There may be an open ep on this connection if this is a syn 2423 * retrasnmit... need to make sure there isn't... 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; 2461 err: 2462 qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle); 2463 } 2464 2465 static 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 2477 static 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) /* can happen in packed mpa unaligned... */ 2486 return; 2487 2488 /* this was originally an rx packet, post it back */ 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 2503 static 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 /* The only slowpath for iwarp ll2 is unalign flush. When this completion 2529 * is received, need to reset the FPDU. 2530 */ 2531 static void 2532 qed_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 2553 static 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 2594 static int 2595 qed_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 /* buffers will be deallocated by qed_ll2 */ 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 2632 static int 2633 qed_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 /* Start SYN connection */ 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 /* SYN will use ctx based queues */ 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; /* will never be fragmented */ 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 /* Start OOO connection */ 2701 data.input.conn_type = QED_LL2_TYPE_OOO; 2702 /* OOO/unaligned will use legacy ll2 queues (ram based) */ 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; /* will never be fragmented */ 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 /* Start Unaligned MPA connection */ 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 /* FW requires that once a packet arrives OOO, it must have at 2733 * least 2 rx buffers available on the unaligned connection 2734 * for handling the case that it is a partial fpdu. 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 /* The mpa_bufs array serves for pending RX packets received on the 2777 * mpa ll2 that don't have place on the tx ring and require later 2778 * processing. We can't fail on allocation of such a struct therefore 2779 * we allocate enough to take care of all rx packets 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; 2795 err: 2796 qed_iwarp_ll2_stop(p_hwfn); 2797 2798 return rc; 2799 } 2800 2801 static 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 2809 int 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 /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */ 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 2850 int 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 2862 static 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 /* paired with READ_ONCE in destroy_qp */ 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 2886 static 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 2957 static void 2958 qed_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 /* paired with READ_ONCE in destroy_qp */ 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 3018 static void 3019 qed_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 /* Done with the SYN packet, post back to ll2 rx */ 3026 qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle); 3027 3028 ep->syn = NULL; 3029 3030 /* If connect failed - upper layer doesn't know about it */ 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 3045 static inline bool 3046 qed_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 3056 static 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 /* Async completion after TCP 3-way handshake */ 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 /* Async completion for Close Connection ramrod */ 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 /* Async event for active side only */ 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 /* FW assigns value that is no greater than u16 */ 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 /* FW assigns value that is no greater than u16 */ 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 3160 int 3161 qed_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 3200 int 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 3216 int 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 3255 void 3256 qed_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