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.tx_sws_timer = cpu_to_le16(QED_TX_SWS_TIMER_DFLT); 118 p_ramrod->tcp.two_msl_timer = cpu_to_le32(QED_TWO_MSL_TIMER_DFLT); 119 p_ramrod->tcp.max_fin_rt = QED_IWARP_MAX_FIN_RT_DEFAULT; 120 121 return; 122 } 123 124 static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid) 125 { 126 int rc; 127 128 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 129 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); 130 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 131 if (rc) { 132 DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n"); 133 return rc; 134 } 135 *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 136 137 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid); 138 if (rc) 139 qed_iwarp_cid_cleaned(p_hwfn, *cid); 140 141 return rc; 142 } 143 144 static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid) 145 { 146 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 147 148 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 149 qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid); 150 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 151 } 152 153 /* This function allocates a cid for passive tcp (called from syn receive) 154 * the reason it's separate from the regular cid allocation is because it 155 * is assured that these cids already have ilt allocated. They are preallocated 156 * to ensure that we won't need to allocate memory during syn processing 157 */ 158 static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid) 159 { 160 int rc; 161 162 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 163 164 rc = qed_rdma_bmap_alloc_id(p_hwfn, 165 &p_hwfn->p_rdma_info->tcp_cid_map, cid); 166 167 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 168 169 if (rc) { 170 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 171 "can't allocate iwarp tcp cid max-count=%d\n", 172 p_hwfn->p_rdma_info->tcp_cid_map.max_count); 173 174 *cid = QED_IWARP_INVALID_TCP_CID; 175 return rc; 176 } 177 178 *cid += qed_cxt_get_proto_cid_start(p_hwfn, 179 p_hwfn->p_rdma_info->proto); 180 return 0; 181 } 182 183 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, 184 struct qed_rdma_qp *qp, 185 struct qed_rdma_create_qp_out_params *out_params) 186 { 187 struct iwarp_create_qp_ramrod_data *p_ramrod; 188 struct qed_sp_init_data init_data; 189 struct qed_spq_entry *p_ent; 190 u16 physical_queue; 191 u32 cid; 192 int rc; 193 194 qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 195 IWARP_SHARED_QUEUE_PAGE_SIZE, 196 &qp->shared_queue_phys_addr, 197 GFP_KERNEL); 198 if (!qp->shared_queue) 199 return -ENOMEM; 200 201 out_params->sq_pbl_virt = (u8 *)qp->shared_queue + 202 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; 203 out_params->sq_pbl_phys = qp->shared_queue_phys_addr + 204 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; 205 out_params->rq_pbl_virt = (u8 *)qp->shared_queue + 206 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; 207 out_params->rq_pbl_phys = qp->shared_queue_phys_addr + 208 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; 209 210 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 211 if (rc) 212 goto err1; 213 214 qp->icid = (u16)cid; 215 216 memset(&init_data, 0, sizeof(init_data)); 217 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 218 init_data.cid = qp->icid; 219 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 220 221 rc = qed_sp_init_request(p_hwfn, &p_ent, 222 IWARP_RAMROD_CMD_ID_CREATE_QP, 223 PROTOCOLID_IWARP, &init_data); 224 if (rc) 225 goto err2; 226 227 p_ramrod = &p_ent->ramrod.iwarp_create_qp; 228 229 SET_FIELD(p_ramrod->flags, 230 IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN, 231 qp->fmr_and_reserved_lkey); 232 233 SET_FIELD(p_ramrod->flags, 234 IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all); 235 236 SET_FIELD(p_ramrod->flags, 237 IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN, 238 qp->incoming_rdma_read_en); 239 240 SET_FIELD(p_ramrod->flags, 241 IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN, 242 qp->incoming_rdma_write_en); 243 244 SET_FIELD(p_ramrod->flags, 245 IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN, 246 qp->incoming_atomic_en); 247 248 SET_FIELD(p_ramrod->flags, 249 IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq); 250 251 p_ramrod->pd = cpu_to_le16(qp->pd); 252 p_ramrod->sq_num_pages = cpu_to_le16(qp->sq_num_pages); 253 p_ramrod->rq_num_pages = cpu_to_le16(qp->rq_num_pages); 254 255 p_ramrod->srq_id.srq_idx = cpu_to_le16(qp->srq_id); 256 p_ramrod->srq_id.opaque_fid = cpu_to_le16(p_hwfn->hw_info.opaque_fid); 257 p_ramrod->qp_handle_for_cqe.hi = qp->qp_handle.hi; 258 p_ramrod->qp_handle_for_cqe.lo = qp->qp_handle.lo; 259 260 p_ramrod->cq_cid_for_sq = 261 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id); 262 p_ramrod->cq_cid_for_rq = 263 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id); 264 265 p_ramrod->dpi = cpu_to_le16(qp->dpi); 266 267 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 268 p_ramrod->physical_q0 = cpu_to_le16(physical_queue); 269 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 270 p_ramrod->physical_q1 = cpu_to_le16(physical_queue); 271 272 rc = qed_spq_post(p_hwfn, p_ent, NULL); 273 if (rc) 274 goto err2; 275 276 return rc; 277 278 err2: 279 qed_iwarp_cid_cleaned(p_hwfn, cid); 280 err1: 281 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 282 IWARP_SHARED_QUEUE_PAGE_SIZE, 283 qp->shared_queue, qp->shared_queue_phys_addr); 284 285 return rc; 286 } 287 288 static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 289 { 290 struct iwarp_modify_qp_ramrod_data *p_ramrod; 291 struct qed_sp_init_data init_data; 292 struct qed_spq_entry *p_ent; 293 u16 flags, trans_to_state; 294 int rc; 295 296 /* Get SPQ entry */ 297 memset(&init_data, 0, sizeof(init_data)); 298 init_data.cid = qp->icid; 299 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 300 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 301 302 rc = qed_sp_init_request(p_hwfn, &p_ent, 303 IWARP_RAMROD_CMD_ID_MODIFY_QP, 304 p_hwfn->p_rdma_info->proto, &init_data); 305 if (rc) 306 return rc; 307 308 p_ramrod = &p_ent->ramrod.iwarp_modify_qp; 309 310 flags = le16_to_cpu(p_ramrod->flags); 311 SET_FIELD(flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN, 0x1); 312 p_ramrod->flags = cpu_to_le16(flags); 313 314 if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING) 315 trans_to_state = IWARP_MODIFY_QP_STATE_CLOSING; 316 else 317 trans_to_state = IWARP_MODIFY_QP_STATE_ERROR; 318 319 p_ramrod->transition_to_state = cpu_to_le16(trans_to_state); 320 321 rc = qed_spq_post(p_hwfn, p_ent, NULL); 322 323 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc); 324 325 return rc; 326 } 327 328 enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state) 329 { 330 switch (state) { 331 case QED_ROCE_QP_STATE_RESET: 332 case QED_ROCE_QP_STATE_INIT: 333 case QED_ROCE_QP_STATE_RTR: 334 return QED_IWARP_QP_STATE_IDLE; 335 case QED_ROCE_QP_STATE_RTS: 336 return QED_IWARP_QP_STATE_RTS; 337 case QED_ROCE_QP_STATE_SQD: 338 return QED_IWARP_QP_STATE_CLOSING; 339 case QED_ROCE_QP_STATE_ERR: 340 return QED_IWARP_QP_STATE_ERROR; 341 case QED_ROCE_QP_STATE_SQE: 342 return QED_IWARP_QP_STATE_TERMINATE; 343 default: 344 return QED_IWARP_QP_STATE_ERROR; 345 } 346 } 347 348 static enum qed_roce_qp_state 349 qed_iwarp2roce_state(enum qed_iwarp_qp_state state) 350 { 351 switch (state) { 352 case QED_IWARP_QP_STATE_IDLE: 353 return QED_ROCE_QP_STATE_INIT; 354 case QED_IWARP_QP_STATE_RTS: 355 return QED_ROCE_QP_STATE_RTS; 356 case QED_IWARP_QP_STATE_TERMINATE: 357 return QED_ROCE_QP_STATE_SQE; 358 case QED_IWARP_QP_STATE_CLOSING: 359 return QED_ROCE_QP_STATE_SQD; 360 case QED_IWARP_QP_STATE_ERROR: 361 return QED_ROCE_QP_STATE_ERR; 362 default: 363 return QED_ROCE_QP_STATE_ERR; 364 } 365 } 366 367 static const char * const iwarp_state_names[] = { 368 "IDLE", 369 "RTS", 370 "TERMINATE", 371 "CLOSING", 372 "ERROR", 373 }; 374 375 int 376 qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, 377 struct qed_rdma_qp *qp, 378 enum qed_iwarp_qp_state new_state, bool internal) 379 { 380 enum qed_iwarp_qp_state prev_iw_state; 381 bool modify_fw = false; 382 int rc = 0; 383 384 /* modify QP can be called from upper-layer or as a result of async 385 * RST/FIN... therefore need to protect 386 */ 387 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 388 prev_iw_state = qp->iwarp_state; 389 390 if (prev_iw_state == new_state) { 391 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 392 return 0; 393 } 394 395 switch (prev_iw_state) { 396 case QED_IWARP_QP_STATE_IDLE: 397 switch (new_state) { 398 case QED_IWARP_QP_STATE_RTS: 399 qp->iwarp_state = QED_IWARP_QP_STATE_RTS; 400 break; 401 case QED_IWARP_QP_STATE_ERROR: 402 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; 403 if (!internal) 404 modify_fw = true; 405 break; 406 default: 407 break; 408 } 409 break; 410 case QED_IWARP_QP_STATE_RTS: 411 switch (new_state) { 412 case QED_IWARP_QP_STATE_CLOSING: 413 if (!internal) 414 modify_fw = true; 415 416 qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING; 417 break; 418 case QED_IWARP_QP_STATE_ERROR: 419 if (!internal) 420 modify_fw = true; 421 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; 422 break; 423 default: 424 break; 425 } 426 break; 427 case QED_IWARP_QP_STATE_ERROR: 428 switch (new_state) { 429 case QED_IWARP_QP_STATE_IDLE: 430 431 qp->iwarp_state = new_state; 432 break; 433 case QED_IWARP_QP_STATE_CLOSING: 434 /* could happen due to race... do nothing.... */ 435 break; 436 default: 437 rc = -EINVAL; 438 } 439 break; 440 case QED_IWARP_QP_STATE_TERMINATE: 441 case QED_IWARP_QP_STATE_CLOSING: 442 qp->iwarp_state = new_state; 443 break; 444 default: 445 break; 446 } 447 448 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n", 449 qp->icid, 450 iwarp_state_names[prev_iw_state], 451 iwarp_state_names[qp->iwarp_state], 452 internal ? "internal" : ""); 453 454 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 455 456 if (modify_fw) 457 rc = qed_iwarp_modify_fw(p_hwfn, qp); 458 459 return rc; 460 } 461 462 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 463 { 464 struct qed_sp_init_data init_data; 465 struct qed_spq_entry *p_ent; 466 int rc; 467 468 /* Get SPQ entry */ 469 memset(&init_data, 0, sizeof(init_data)); 470 init_data.cid = qp->icid; 471 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 472 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 473 474 rc = qed_sp_init_request(p_hwfn, &p_ent, 475 IWARP_RAMROD_CMD_ID_DESTROY_QP, 476 p_hwfn->p_rdma_info->proto, &init_data); 477 if (rc) 478 return rc; 479 480 rc = qed_spq_post(p_hwfn, p_ent, NULL); 481 482 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc); 483 484 return rc; 485 } 486 487 static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn, 488 struct qed_iwarp_ep *ep, 489 bool remove_from_active_list) 490 { 491 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 492 sizeof(*ep->ep_buffer_virt), 493 ep->ep_buffer_virt, ep->ep_buffer_phys); 494 495 if (remove_from_active_list) { 496 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 497 list_del(&ep->list_entry); 498 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 499 } 500 501 if (ep->qp) 502 ep->qp->ep = NULL; 503 504 kfree(ep); 505 } 506 507 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 508 { 509 struct qed_iwarp_ep *ep = qp->ep; 510 int wait_count = 0; 511 int rc = 0; 512 513 if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) { 514 rc = qed_iwarp_modify_qp(p_hwfn, qp, 515 QED_IWARP_QP_STATE_ERROR, false); 516 if (rc) 517 return rc; 518 } 519 520 /* Make sure ep is closed before returning and freeing memory. */ 521 if (ep) { 522 while (READ_ONCE(ep->state) != QED_IWARP_EP_CLOSED && 523 wait_count++ < 200) 524 msleep(100); 525 526 if (ep->state != QED_IWARP_EP_CLOSED) 527 DP_NOTICE(p_hwfn, "ep state close timeout state=%x\n", 528 ep->state); 529 530 qed_iwarp_destroy_ep(p_hwfn, ep, false); 531 } 532 533 rc = qed_iwarp_fw_destroy(p_hwfn, qp); 534 535 if (qp->shared_queue) 536 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 537 IWARP_SHARED_QUEUE_PAGE_SIZE, 538 qp->shared_queue, qp->shared_queue_phys_addr); 539 540 return rc; 541 } 542 543 static int 544 qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out) 545 { 546 struct qed_iwarp_ep *ep; 547 int rc; 548 549 ep = kzalloc(sizeof(*ep), GFP_KERNEL); 550 if (!ep) 551 return -ENOMEM; 552 553 ep->state = QED_IWARP_EP_INIT; 554 555 ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 556 sizeof(*ep->ep_buffer_virt), 557 &ep->ep_buffer_phys, 558 GFP_KERNEL); 559 if (!ep->ep_buffer_virt) { 560 rc = -ENOMEM; 561 goto err; 562 } 563 564 ep->sig = QED_EP_SIG; 565 566 *ep_out = ep; 567 568 return 0; 569 570 err: 571 kfree(ep); 572 return rc; 573 } 574 575 static void 576 qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn, 577 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod) 578 { 579 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n", 580 p_tcp_ramrod->tcp.local_mac_addr_lo, 581 p_tcp_ramrod->tcp.local_mac_addr_mid, 582 p_tcp_ramrod->tcp.local_mac_addr_hi, 583 p_tcp_ramrod->tcp.remote_mac_addr_lo, 584 p_tcp_ramrod->tcp.remote_mac_addr_mid, 585 p_tcp_ramrod->tcp.remote_mac_addr_hi); 586 587 if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) { 588 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 589 "local_ip=%pI4h:%x, remote_ip=%pI4h:%x, vlan=%x\n", 590 p_tcp_ramrod->tcp.local_ip, 591 p_tcp_ramrod->tcp.local_port, 592 p_tcp_ramrod->tcp.remote_ip, 593 p_tcp_ramrod->tcp.remote_port, 594 p_tcp_ramrod->tcp.vlan_id); 595 } else { 596 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 597 "local_ip=%pI6:%x, remote_ip=%pI6:%x, vlan=%x\n", 598 p_tcp_ramrod->tcp.local_ip, 599 p_tcp_ramrod->tcp.local_port, 600 p_tcp_ramrod->tcp.remote_ip, 601 p_tcp_ramrod->tcp.remote_port, 602 p_tcp_ramrod->tcp.vlan_id); 603 } 604 605 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 606 "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n", 607 p_tcp_ramrod->tcp.flow_label, 608 p_tcp_ramrod->tcp.ttl, 609 p_tcp_ramrod->tcp.tos_or_tc, 610 p_tcp_ramrod->tcp.mss, 611 p_tcp_ramrod->tcp.rcv_wnd_scale, 612 p_tcp_ramrod->tcp.connect_mode, 613 p_tcp_ramrod->tcp.flags); 614 615 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n", 616 p_tcp_ramrod->tcp.syn_ip_payload_length, 617 p_tcp_ramrod->tcp.syn_phy_addr_lo, 618 p_tcp_ramrod->tcp.syn_phy_addr_hi); 619 } 620 621 static int 622 qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 623 { 624 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 625 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod; 626 struct tcp_offload_params_opt2 *tcp; 627 struct qed_sp_init_data init_data; 628 struct qed_spq_entry *p_ent; 629 dma_addr_t async_output_phys; 630 dma_addr_t in_pdata_phys; 631 u16 physical_q; 632 u16 flags = 0; 633 u8 tcp_flags; 634 int rc; 635 int i; 636 637 memset(&init_data, 0, sizeof(init_data)); 638 init_data.cid = ep->tcp_cid; 639 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 640 if (ep->connect_mode == TCP_CONNECT_PASSIVE) 641 init_data.comp_mode = QED_SPQ_MODE_CB; 642 else 643 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 644 645 rc = qed_sp_init_request(p_hwfn, &p_ent, 646 IWARP_RAMROD_CMD_ID_TCP_OFFLOAD, 647 PROTOCOLID_IWARP, &init_data); 648 if (rc) 649 return rc; 650 651 p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload; 652 653 in_pdata_phys = ep->ep_buffer_phys + 654 offsetof(struct qed_iwarp_ep_memory, in_pdata); 655 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr, 656 in_pdata_phys); 657 658 p_tcp_ramrod->iwarp.incoming_ulp_buffer.len = 659 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata)); 660 661 async_output_phys = ep->ep_buffer_phys + 662 offsetof(struct qed_iwarp_ep_memory, async_output); 663 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf, 664 async_output_phys); 665 666 p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep)); 667 p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep)); 668 669 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 670 p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q); 671 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 672 p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q); 673 p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev; 674 675 tcp = &p_tcp_ramrod->tcp; 676 qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi, 677 &tcp->remote_mac_addr_mid, 678 &tcp->remote_mac_addr_lo, ep->remote_mac_addr); 679 qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid, 680 &tcp->local_mac_addr_lo, ep->local_mac_addr); 681 682 tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan); 683 684 tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags; 685 686 SET_FIELD(flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN, 687 !!(tcp_flags & QED_IWARP_TS_EN)); 688 689 SET_FIELD(flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN, 690 !!(tcp_flags & QED_IWARP_DA_EN)); 691 692 tcp->flags = cpu_to_le16(flags); 693 tcp->ip_version = ep->cm_info.ip_version; 694 695 for (i = 0; i < 4; i++) { 696 tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]); 697 tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]); 698 } 699 700 tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port); 701 tcp->local_port = cpu_to_le16(ep->cm_info.local_port); 702 tcp->mss = cpu_to_le16(ep->mss); 703 tcp->flow_label = 0; 704 tcp->ttl = 0x40; 705 tcp->tos_or_tc = 0; 706 707 tcp->max_rt_time = QED_IWARP_DEF_MAX_RT_TIME; 708 tcp->cwnd = cpu_to_le32(QED_IWARP_DEF_CWND_FACTOR * ep->mss); 709 tcp->ka_max_probe_cnt = QED_IWARP_DEF_KA_MAX_PROBE_CNT; 710 tcp->ka_timeout = cpu_to_le32(QED_IWARP_DEF_KA_TIMEOUT); 711 tcp->ka_interval = cpu_to_le32(QED_IWARP_DEF_KA_INTERVAL); 712 713 tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale; 714 tcp->connect_mode = ep->connect_mode; 715 716 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 717 tcp->syn_ip_payload_length = 718 cpu_to_le16(ep->syn_ip_payload_length); 719 tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr); 720 tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr); 721 } 722 723 qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod); 724 725 rc = qed_spq_post(p_hwfn, p_ent, NULL); 726 727 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 728 "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc); 729 730 return rc; 731 } 732 733 static void 734 qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 735 { 736 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 737 struct qed_iwarp_cm_event_params params; 738 struct mpa_v2_hdr *mpa_v2; 739 union async_output *async_data; 740 u16 mpa_ord, mpa_ird; 741 u8 mpa_hdr_size = 0; 742 u16 ulp_data_len; 743 u8 mpa_rev; 744 745 async_data = &ep->ep_buffer_virt->async_output; 746 747 mpa_rev = async_data->mpa_request.mpa_handshake_mode; 748 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 749 "private_data_len=%x handshake_mode=%x private_data=(%x)\n", 750 async_data->mpa_request.ulp_data_len, 751 mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata))); 752 753 if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) { 754 /* Read ord/ird values from private data buffer */ 755 mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata; 756 mpa_hdr_size = sizeof(*mpa_v2); 757 758 mpa_ord = ntohs(mpa_v2->ord); 759 mpa_ird = ntohs(mpa_v2->ird); 760 761 /* Temprary store in cm_info incoming ord/ird requested, later 762 * replace with negotiated value during accept 763 */ 764 ep->cm_info.ord = (u8)min_t(u16, 765 (mpa_ord & MPA_V2_IRD_ORD_MASK), 766 QED_IWARP_ORD_DEFAULT); 767 768 ep->cm_info.ird = (u8)min_t(u16, 769 (mpa_ird & MPA_V2_IRD_ORD_MASK), 770 QED_IWARP_IRD_DEFAULT); 771 772 /* Peer2Peer negotiation */ 773 ep->rtr_type = MPA_RTR_TYPE_NONE; 774 if (mpa_ird & MPA_V2_PEER2PEER_MODEL) { 775 if (mpa_ord & MPA_V2_WRITE_RTR) 776 ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE; 777 778 if (mpa_ord & MPA_V2_READ_RTR) 779 ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ; 780 781 if (mpa_ird & MPA_V2_SEND_RTR) 782 ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND; 783 784 ep->rtr_type &= iwarp_info->rtr_type; 785 786 /* if we're left with no match send our capabilities */ 787 if (ep->rtr_type == MPA_RTR_TYPE_NONE) 788 ep->rtr_type = iwarp_info->rtr_type; 789 } 790 791 ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED; 792 } else { 793 ep->cm_info.ord = QED_IWARP_ORD_DEFAULT; 794 ep->cm_info.ird = QED_IWARP_IRD_DEFAULT; 795 ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC; 796 } 797 798 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 799 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n", 800 mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type, 801 async_data->mpa_request.ulp_data_len, mpa_hdr_size); 802 803 /* Strip mpa v2 hdr from private data before sending to upper layer */ 804 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size; 805 806 ulp_data_len = le16_to_cpu(async_data->mpa_request.ulp_data_len); 807 ep->cm_info.private_data_len = ulp_data_len - mpa_hdr_size; 808 809 params.event = QED_IWARP_EVENT_MPA_REQUEST; 810 params.cm_info = &ep->cm_info; 811 params.ep_context = ep; 812 params.status = 0; 813 814 ep->state = QED_IWARP_EP_MPA_REQ_RCVD; 815 ep->event_cb(ep->cb_context, ¶ms); 816 } 817 818 static int 819 qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 820 { 821 struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod; 822 struct mpa_outgoing_params *common; 823 struct qed_iwarp_info *iwarp_info; 824 struct qed_sp_init_data init_data; 825 dma_addr_t async_output_phys; 826 struct qed_spq_entry *p_ent; 827 dma_addr_t out_pdata_phys; 828 dma_addr_t in_pdata_phys; 829 struct qed_rdma_qp *qp; 830 bool reject; 831 u32 val; 832 int rc; 833 834 if (!ep) 835 return -EINVAL; 836 837 qp = ep->qp; 838 reject = !qp; 839 840 memset(&init_data, 0, sizeof(init_data)); 841 init_data.cid = reject ? ep->tcp_cid : qp->icid; 842 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 843 844 if (ep->connect_mode == TCP_CONNECT_ACTIVE) 845 init_data.comp_mode = QED_SPQ_MODE_CB; 846 else 847 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 848 849 rc = qed_sp_init_request(p_hwfn, &p_ent, 850 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD, 851 PROTOCOLID_IWARP, &init_data); 852 if (rc) 853 return rc; 854 855 p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload; 856 common = &p_mpa_ramrod->common; 857 858 out_pdata_phys = ep->ep_buffer_phys + 859 offsetof(struct qed_iwarp_ep_memory, out_pdata); 860 DMA_REGPAIR_LE(common->outgoing_ulp_buffer.addr, out_pdata_phys); 861 862 val = ep->cm_info.private_data_len; 863 common->outgoing_ulp_buffer.len = cpu_to_le16(val); 864 common->crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed; 865 866 common->out_rq.ord = cpu_to_le32(ep->cm_info.ord); 867 common->out_rq.ird = cpu_to_le32(ep->cm_info.ird); 868 869 val = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid; 870 p_mpa_ramrod->tcp_cid = cpu_to_le32(val); 871 872 in_pdata_phys = ep->ep_buffer_phys + 873 offsetof(struct qed_iwarp_ep_memory, in_pdata); 874 p_mpa_ramrod->tcp_connect_side = ep->connect_mode; 875 DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr, 876 in_pdata_phys); 877 p_mpa_ramrod->incoming_ulp_buffer.len = 878 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata)); 879 async_output_phys = ep->ep_buffer_phys + 880 offsetof(struct qed_iwarp_ep_memory, async_output); 881 DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf, 882 async_output_phys); 883 p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep)); 884 p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep)); 885 886 if (!reject) { 887 DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr, 888 qp->shared_queue_phys_addr); 889 p_mpa_ramrod->stats_counter_id = 890 RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue; 891 } else { 892 common->reject = 1; 893 } 894 895 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 896 p_mpa_ramrod->rcv_wnd = cpu_to_le16(iwarp_info->rcv_wnd_size); 897 p_mpa_ramrod->mode = ep->mpa_rev; 898 SET_FIELD(p_mpa_ramrod->rtr_pref, 899 IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type); 900 901 ep->state = QED_IWARP_EP_MPA_OFFLOADED; 902 rc = qed_spq_post(p_hwfn, p_ent, NULL); 903 if (!reject) 904 ep->cid = qp->icid; /* Now they're migrated. */ 905 906 DP_VERBOSE(p_hwfn, 907 QED_MSG_RDMA, 908 "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", 909 reject ? 0xffff : qp->icid, 910 ep->tcp_cid, 911 rc, 912 ep->cm_info.ird, 913 ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject); 914 return rc; 915 } 916 917 static void 918 qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 919 { 920 ep->state = QED_IWARP_EP_INIT; 921 if (ep->qp) 922 ep->qp->ep = NULL; 923 ep->qp = NULL; 924 memset(&ep->cm_info, 0, sizeof(ep->cm_info)); 925 926 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) { 927 /* We don't care about the return code, it's ok if tcp_cid 928 * remains invalid...in this case we'll defer allocation 929 */ 930 qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid); 931 } 932 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 933 934 list_move_tail(&ep->list_entry, 935 &p_hwfn->p_rdma_info->iwarp.ep_free_list); 936 937 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 938 } 939 940 static void 941 qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 942 { 943 struct mpa_v2_hdr *mpa_v2_params; 944 union async_output *async_data; 945 u16 mpa_ird, mpa_ord; 946 u8 mpa_data_size = 0; 947 u16 ulp_data_len; 948 949 if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) { 950 mpa_v2_params = 951 (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata); 952 mpa_data_size = sizeof(*mpa_v2_params); 953 mpa_ird = ntohs(mpa_v2_params->ird); 954 mpa_ord = ntohs(mpa_v2_params->ord); 955 956 ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK); 957 ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK); 958 } 959 960 async_data = &ep->ep_buffer_virt->async_output; 961 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size; 962 963 ulp_data_len = le16_to_cpu(async_data->mpa_response.ulp_data_len); 964 ep->cm_info.private_data_len = ulp_data_len - mpa_data_size; 965 } 966 967 static void 968 qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 969 { 970 struct qed_iwarp_cm_event_params params; 971 972 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 973 DP_NOTICE(p_hwfn, 974 "MPA reply event not expected on passive side!\n"); 975 return; 976 } 977 978 params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY; 979 980 qed_iwarp_parse_private_data(p_hwfn, ep); 981 982 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 983 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 984 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 985 986 params.cm_info = &ep->cm_info; 987 params.ep_context = ep; 988 params.status = 0; 989 990 ep->mpa_reply_processed = true; 991 992 ep->event_cb(ep->cb_context, ¶ms); 993 } 994 995 #define QED_IWARP_CONNECT_MODE_STRING(ep) \ 996 ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active" 997 998 /* Called as a result of the event: 999 * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE 1000 */ 1001 static void 1002 qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn, 1003 struct qed_iwarp_ep *ep, u8 fw_return_code) 1004 { 1005 struct qed_iwarp_cm_event_params params; 1006 1007 if (ep->connect_mode == TCP_CONNECT_ACTIVE) 1008 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE; 1009 else 1010 params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE; 1011 1012 if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed) 1013 qed_iwarp_parse_private_data(p_hwfn, ep); 1014 1015 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1016 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 1017 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 1018 1019 params.cm_info = &ep->cm_info; 1020 1021 params.ep_context = ep; 1022 1023 switch (fw_return_code) { 1024 case RDMA_RETURN_OK: 1025 ep->qp->max_rd_atomic_req = ep->cm_info.ord; 1026 ep->qp->max_rd_atomic_resp = ep->cm_info.ird; 1027 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1); 1028 ep->state = QED_IWARP_EP_ESTABLISHED; 1029 params.status = 0; 1030 break; 1031 case IWARP_CONN_ERROR_MPA_TIMEOUT: 1032 DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n", 1033 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1034 params.status = -EBUSY; 1035 break; 1036 case IWARP_CONN_ERROR_MPA_ERROR_REJECT: 1037 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n", 1038 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1039 params.status = -ECONNREFUSED; 1040 break; 1041 case IWARP_CONN_ERROR_MPA_RST: 1042 DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n", 1043 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid, 1044 ep->tcp_cid); 1045 params.status = -ECONNRESET; 1046 break; 1047 case IWARP_CONN_ERROR_MPA_FIN: 1048 DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n", 1049 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1050 params.status = -ECONNREFUSED; 1051 break; 1052 case IWARP_CONN_ERROR_MPA_INSUF_IRD: 1053 DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n", 1054 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1055 params.status = -ECONNREFUSED; 1056 break; 1057 case IWARP_CONN_ERROR_MPA_RTR_MISMATCH: 1058 DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n", 1059 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1060 params.status = -ECONNREFUSED; 1061 break; 1062 case IWARP_CONN_ERROR_MPA_INVALID_PACKET: 1063 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n", 1064 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1065 params.status = -ECONNREFUSED; 1066 break; 1067 case IWARP_CONN_ERROR_MPA_LOCAL_ERROR: 1068 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n", 1069 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1070 params.status = -ECONNREFUSED; 1071 break; 1072 case IWARP_CONN_ERROR_MPA_TERMINATE: 1073 DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n", 1074 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1075 params.status = -ECONNREFUSED; 1076 break; 1077 default: 1078 params.status = -ECONNRESET; 1079 break; 1080 } 1081 1082 if (fw_return_code != RDMA_RETURN_OK) 1083 /* paired with READ_ONCE in destroy_qp */ 1084 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED); 1085 1086 ep->event_cb(ep->cb_context, ¶ms); 1087 1088 /* on passive side, if there is no associated QP (REJECT) we need to 1089 * return the ep to the pool, (in the regular case we add an element 1090 * in accept instead of this one. 1091 * In both cases we need to remove it from the ep_list. 1092 */ 1093 if (fw_return_code != RDMA_RETURN_OK) { 1094 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 1095 if ((ep->connect_mode == TCP_CONNECT_PASSIVE) && 1096 (!ep->qp)) { /* Rejected */ 1097 qed_iwarp_return_ep(p_hwfn, ep); 1098 } else { 1099 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1100 list_del(&ep->list_entry); 1101 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1102 } 1103 } 1104 } 1105 1106 static void 1107 qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn, 1108 struct qed_iwarp_ep *ep, u8 *mpa_data_size) 1109 { 1110 struct mpa_v2_hdr *mpa_v2_params; 1111 u16 mpa_ird, mpa_ord; 1112 1113 *mpa_data_size = 0; 1114 if (MPA_REV2(ep->mpa_rev)) { 1115 mpa_v2_params = 1116 (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata; 1117 *mpa_data_size = sizeof(*mpa_v2_params); 1118 1119 mpa_ird = (u16)ep->cm_info.ird; 1120 mpa_ord = (u16)ep->cm_info.ord; 1121 1122 if (ep->rtr_type != MPA_RTR_TYPE_NONE) { 1123 mpa_ird |= MPA_V2_PEER2PEER_MODEL; 1124 1125 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND) 1126 mpa_ird |= MPA_V2_SEND_RTR; 1127 1128 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE) 1129 mpa_ord |= MPA_V2_WRITE_RTR; 1130 1131 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) 1132 mpa_ord |= MPA_V2_READ_RTR; 1133 } 1134 1135 mpa_v2_params->ird = htons(mpa_ird); 1136 mpa_v2_params->ord = htons(mpa_ord); 1137 1138 DP_VERBOSE(p_hwfn, 1139 QED_MSG_RDMA, 1140 "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n", 1141 mpa_v2_params->ird, 1142 mpa_v2_params->ord, 1143 *((u32 *)mpa_v2_params), 1144 mpa_ord & MPA_V2_IRD_ORD_MASK, 1145 mpa_ird & MPA_V2_IRD_ORD_MASK, 1146 !!(mpa_ird & MPA_V2_PEER2PEER_MODEL), 1147 !!(mpa_ird & MPA_V2_SEND_RTR), 1148 !!(mpa_ord & MPA_V2_WRITE_RTR), 1149 !!(mpa_ord & MPA_V2_READ_RTR)); 1150 } 1151 } 1152 1153 int qed_iwarp_connect(void *rdma_cxt, 1154 struct qed_iwarp_connect_in *iparams, 1155 struct qed_iwarp_connect_out *oparams) 1156 { 1157 struct qed_hwfn *p_hwfn = rdma_cxt; 1158 struct qed_iwarp_info *iwarp_info; 1159 struct qed_iwarp_ep *ep; 1160 u8 mpa_data_size = 0; 1161 u32 cid; 1162 int rc; 1163 1164 if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) || 1165 (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) { 1166 DP_NOTICE(p_hwfn, 1167 "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n", 1168 iparams->qp->icid, iparams->cm_info.ord, 1169 iparams->cm_info.ird); 1170 1171 return -EINVAL; 1172 } 1173 1174 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1175 1176 /* Allocate ep object */ 1177 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 1178 if (rc) 1179 return rc; 1180 1181 rc = qed_iwarp_create_ep(p_hwfn, &ep); 1182 if (rc) 1183 goto err; 1184 1185 ep->tcp_cid = cid; 1186 1187 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1188 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list); 1189 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1190 1191 ep->qp = iparams->qp; 1192 ep->qp->ep = ep; 1193 ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr); 1194 ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr); 1195 memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info)); 1196 1197 ep->cm_info.ord = iparams->cm_info.ord; 1198 ep->cm_info.ird = iparams->cm_info.ird; 1199 1200 ep->rtr_type = iwarp_info->rtr_type; 1201 if (!iwarp_info->peer2peer) 1202 ep->rtr_type = MPA_RTR_TYPE_NONE; 1203 1204 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0)) 1205 ep->cm_info.ord = 1; 1206 1207 ep->mpa_rev = iwarp_info->mpa_rev; 1208 1209 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1210 1211 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1212 ep->cm_info.private_data_len = iparams->cm_info.private_data_len + 1213 mpa_data_size; 1214 1215 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1216 iparams->cm_info.private_data, 1217 iparams->cm_info.private_data_len); 1218 1219 ep->mss = iparams->mss; 1220 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss); 1221 1222 ep->event_cb = iparams->event_cb; 1223 ep->cb_context = iparams->cb_context; 1224 ep->connect_mode = TCP_CONNECT_ACTIVE; 1225 1226 oparams->ep_context = ep; 1227 1228 rc = qed_iwarp_tcp_offload(p_hwfn, ep); 1229 1230 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n", 1231 iparams->qp->icid, ep->tcp_cid, rc); 1232 1233 if (rc) { 1234 qed_iwarp_destroy_ep(p_hwfn, ep, true); 1235 goto err; 1236 } 1237 1238 return rc; 1239 err: 1240 qed_iwarp_cid_cleaned(p_hwfn, cid); 1241 1242 return rc; 1243 } 1244 1245 static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn) 1246 { 1247 struct qed_iwarp_ep *ep = NULL; 1248 int rc; 1249 1250 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1251 1252 if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) { 1253 DP_ERR(p_hwfn, "Ep list is empty\n"); 1254 goto out; 1255 } 1256 1257 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list, 1258 struct qed_iwarp_ep, list_entry); 1259 1260 /* in some cases we could have failed allocating a tcp cid when added 1261 * from accept / failure... retry now..this is not the common case. 1262 */ 1263 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) { 1264 rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid); 1265 1266 /* if we fail we could look for another entry with a valid 1267 * tcp_cid, but since we don't expect to reach this anyway 1268 * it's not worth the handling 1269 */ 1270 if (rc) { 1271 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 1272 ep = NULL; 1273 goto out; 1274 } 1275 } 1276 1277 list_del(&ep->list_entry); 1278 1279 out: 1280 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1281 return ep; 1282 } 1283 1284 #define QED_IWARP_MAX_CID_CLEAN_TIME 100 1285 #define QED_IWARP_MAX_NO_PROGRESS_CNT 5 1286 1287 /* This function waits for all the bits of a bmap to be cleared, as long as 1288 * there is progress ( i.e. the number of bits left to be cleared decreases ) 1289 * the function continues. 1290 */ 1291 static int 1292 qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap) 1293 { 1294 int prev_weight = 0; 1295 int wait_count = 0; 1296 int weight = 0; 1297 1298 weight = bitmap_weight(bmap->bitmap, bmap->max_count); 1299 prev_weight = weight; 1300 1301 while (weight) { 1302 /* If the HW device is during recovery, all resources are 1303 * immediately reset without receiving a per-cid indication 1304 * from HW. In this case we don't expect the cid_map to be 1305 * cleared. 1306 */ 1307 if (p_hwfn->cdev->recov_in_prog) 1308 return 0; 1309 1310 msleep(QED_IWARP_MAX_CID_CLEAN_TIME); 1311 1312 weight = bitmap_weight(bmap->bitmap, bmap->max_count); 1313 1314 if (prev_weight == weight) { 1315 wait_count++; 1316 } else { 1317 prev_weight = weight; 1318 wait_count = 0; 1319 } 1320 1321 if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) { 1322 DP_NOTICE(p_hwfn, 1323 "%s bitmap wait timed out (%d cids pending)\n", 1324 bmap->name, weight); 1325 return -EBUSY; 1326 } 1327 } 1328 return 0; 1329 } 1330 1331 static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn) 1332 { 1333 int rc; 1334 int i; 1335 1336 rc = qed_iwarp_wait_cid_map_cleared(p_hwfn, 1337 &p_hwfn->p_rdma_info->tcp_cid_map); 1338 if (rc) 1339 return rc; 1340 1341 /* Now free the tcp cids from the main cid map */ 1342 for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++) 1343 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i); 1344 1345 /* Now wait for all cids to be completed */ 1346 return qed_iwarp_wait_cid_map_cleared(p_hwfn, 1347 &p_hwfn->p_rdma_info->cid_map); 1348 } 1349 1350 static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn) 1351 { 1352 struct qed_iwarp_ep *ep; 1353 1354 while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) { 1355 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1356 1357 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list, 1358 struct qed_iwarp_ep, list_entry); 1359 1360 if (!ep) { 1361 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1362 break; 1363 } 1364 list_del(&ep->list_entry); 1365 1366 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1367 1368 if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID) 1369 qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid); 1370 1371 qed_iwarp_destroy_ep(p_hwfn, ep, false); 1372 } 1373 } 1374 1375 static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init) 1376 { 1377 struct qed_iwarp_ep *ep; 1378 int rc = 0; 1379 int count; 1380 u32 cid; 1381 int i; 1382 1383 count = init ? QED_IWARP_PREALLOC_CNT : 1; 1384 for (i = 0; i < count; i++) { 1385 rc = qed_iwarp_create_ep(p_hwfn, &ep); 1386 if (rc) 1387 return rc; 1388 1389 /* During initialization we allocate from the main pool, 1390 * afterwards we allocate only from the tcp_cid. 1391 */ 1392 if (init) { 1393 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 1394 if (rc) 1395 goto err; 1396 qed_iwarp_set_tcp_cid(p_hwfn, cid); 1397 } else { 1398 /* We don't care about the return code, it's ok if 1399 * tcp_cid remains invalid...in this case we'll 1400 * defer allocation 1401 */ 1402 qed_iwarp_alloc_tcp_cid(p_hwfn, &cid); 1403 } 1404 1405 ep->tcp_cid = cid; 1406 1407 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1408 list_add_tail(&ep->list_entry, 1409 &p_hwfn->p_rdma_info->iwarp.ep_free_list); 1410 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1411 } 1412 1413 return rc; 1414 1415 err: 1416 qed_iwarp_destroy_ep(p_hwfn, ep, false); 1417 1418 return rc; 1419 } 1420 1421 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn) 1422 { 1423 int rc; 1424 1425 /* Allocate bitmap for tcp cid. These are used by passive side 1426 * to ensure it can allocate a tcp cid during dpc that was 1427 * pre-acquired and doesn't require dynamic allocation of ilt 1428 */ 1429 rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1430 QED_IWARP_PREALLOC_CNT, "TCP_CID"); 1431 if (rc) { 1432 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1433 "Failed to allocate tcp cid, rc = %d\n", rc); 1434 return rc; 1435 } 1436 1437 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list); 1438 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1439 1440 rc = qed_iwarp_prealloc_ep(p_hwfn, true); 1441 if (rc) 1442 return rc; 1443 1444 return qed_ooo_alloc(p_hwfn); 1445 } 1446 1447 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn) 1448 { 1449 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1450 1451 qed_ooo_free(p_hwfn); 1452 qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1); 1453 kfree(iwarp_info->mpa_bufs); 1454 kfree(iwarp_info->partial_fpdus); 1455 kfree(iwarp_info->mpa_intermediate_buf); 1456 } 1457 1458 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams) 1459 { 1460 struct qed_hwfn *p_hwfn = rdma_cxt; 1461 struct qed_iwarp_ep *ep; 1462 u8 mpa_data_size = 0; 1463 int rc; 1464 1465 ep = iparams->ep_context; 1466 if (!ep) { 1467 DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n"); 1468 return -EINVAL; 1469 } 1470 1471 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n", 1472 iparams->qp->icid, ep->tcp_cid); 1473 1474 if ((iparams->ord > QED_IWARP_ORD_DEFAULT) || 1475 (iparams->ird > QED_IWARP_IRD_DEFAULT)) { 1476 DP_VERBOSE(p_hwfn, 1477 QED_MSG_RDMA, 1478 "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n", 1479 iparams->qp->icid, 1480 ep->tcp_cid, iparams->ord, iparams->ord); 1481 return -EINVAL; 1482 } 1483 1484 qed_iwarp_prealloc_ep(p_hwfn, false); 1485 1486 ep->cb_context = iparams->cb_context; 1487 ep->qp = iparams->qp; 1488 ep->qp->ep = ep; 1489 1490 if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) { 1491 /* Negotiate ord/ird: if upperlayer requested ord larger than 1492 * ird advertised by remote, we need to decrease our ord 1493 */ 1494 if (iparams->ord > ep->cm_info.ird) 1495 iparams->ord = ep->cm_info.ird; 1496 1497 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && 1498 (iparams->ird == 0)) 1499 iparams->ird = 1; 1500 } 1501 1502 /* Update cm_info ord/ird to be negotiated values */ 1503 ep->cm_info.ord = iparams->ord; 1504 ep->cm_info.ird = iparams->ird; 1505 1506 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1507 1508 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1509 ep->cm_info.private_data_len = iparams->private_data_len + 1510 mpa_data_size; 1511 1512 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1513 iparams->private_data, iparams->private_data_len); 1514 1515 rc = qed_iwarp_mpa_offload(p_hwfn, ep); 1516 if (rc) 1517 qed_iwarp_modify_qp(p_hwfn, 1518 iparams->qp, QED_IWARP_QP_STATE_ERROR, 1); 1519 1520 return rc; 1521 } 1522 1523 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams) 1524 { 1525 struct qed_hwfn *p_hwfn = rdma_cxt; 1526 struct qed_iwarp_ep *ep; 1527 u8 mpa_data_size = 0; 1528 1529 ep = iparams->ep_context; 1530 if (!ep) { 1531 DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n"); 1532 return -EINVAL; 1533 } 1534 1535 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid); 1536 1537 ep->cb_context = iparams->cb_context; 1538 ep->qp = NULL; 1539 1540 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1541 1542 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1543 ep->cm_info.private_data_len = iparams->private_data_len + 1544 mpa_data_size; 1545 1546 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1547 iparams->private_data, iparams->private_data_len); 1548 1549 return qed_iwarp_mpa_offload(p_hwfn, ep); 1550 } 1551 1552 static void 1553 qed_iwarp_print_cm_info(struct qed_hwfn *p_hwfn, 1554 struct qed_iwarp_cm_info *cm_info) 1555 { 1556 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "ip_version = %d\n", 1557 cm_info->ip_version); 1558 1559 if (cm_info->ip_version == QED_TCP_IPV4) 1560 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1561 "remote_ip %pI4h:%x, local_ip %pI4h:%x vlan=%x\n", 1562 cm_info->remote_ip, cm_info->remote_port, 1563 cm_info->local_ip, cm_info->local_port, 1564 cm_info->vlan); 1565 else 1566 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1567 "remote_ip %pI6:%x, local_ip %pI6:%x vlan=%x\n", 1568 cm_info->remote_ip, cm_info->remote_port, 1569 cm_info->local_ip, cm_info->local_port, 1570 cm_info->vlan); 1571 1572 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1573 "private_data_len = %x ord = %d, ird = %d\n", 1574 cm_info->private_data_len, cm_info->ord, cm_info->ird); 1575 } 1576 1577 static int 1578 qed_iwarp_ll2_post_rx(struct qed_hwfn *p_hwfn, 1579 struct qed_iwarp_ll2_buff *buf, u8 handle) 1580 { 1581 int rc; 1582 1583 rc = qed_ll2_post_rx_buffer(p_hwfn, handle, buf->data_phys_addr, 1584 (u16)buf->buff_size, buf, 1); 1585 if (rc) { 1586 DP_NOTICE(p_hwfn, 1587 "Failed to repost rx buffer to ll2 rc = %d, handle=%d\n", 1588 rc, handle); 1589 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buf->buff_size, 1590 buf->data, buf->data_phys_addr); 1591 kfree(buf); 1592 } 1593 1594 return rc; 1595 } 1596 1597 static bool 1598 qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info) 1599 { 1600 struct qed_iwarp_ep *ep = NULL; 1601 bool found = false; 1602 1603 list_for_each_entry(ep, 1604 &p_hwfn->p_rdma_info->iwarp.ep_list, 1605 list_entry) { 1606 if ((ep->cm_info.local_port == cm_info->local_port) && 1607 (ep->cm_info.remote_port == cm_info->remote_port) && 1608 (ep->cm_info.vlan == cm_info->vlan) && 1609 !memcmp(&ep->cm_info.local_ip, cm_info->local_ip, 1610 sizeof(cm_info->local_ip)) && 1611 !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip, 1612 sizeof(cm_info->remote_ip))) { 1613 found = true; 1614 break; 1615 } 1616 } 1617 1618 if (found) { 1619 DP_NOTICE(p_hwfn, 1620 "SYN received on active connection - dropping\n"); 1621 qed_iwarp_print_cm_info(p_hwfn, cm_info); 1622 1623 return true; 1624 } 1625 1626 return false; 1627 } 1628 1629 static struct qed_iwarp_listener * 1630 qed_iwarp_get_listener(struct qed_hwfn *p_hwfn, 1631 struct qed_iwarp_cm_info *cm_info) 1632 { 1633 struct qed_iwarp_listener *listener = NULL; 1634 static const u32 ip_zero[4] = { 0, 0, 0, 0 }; 1635 bool found = false; 1636 1637 list_for_each_entry(listener, 1638 &p_hwfn->p_rdma_info->iwarp.listen_list, 1639 list_entry) { 1640 if (listener->port == cm_info->local_port) { 1641 if (!memcmp(listener->ip_addr, 1642 ip_zero, sizeof(ip_zero))) { 1643 found = true; 1644 break; 1645 } 1646 1647 if (!memcmp(listener->ip_addr, 1648 cm_info->local_ip, 1649 sizeof(cm_info->local_ip)) && 1650 (listener->vlan == cm_info->vlan)) { 1651 found = true; 1652 break; 1653 } 1654 } 1655 } 1656 1657 if (found) { 1658 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener found = %p\n", 1659 listener); 1660 return listener; 1661 } 1662 1663 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener not found\n"); 1664 return NULL; 1665 } 1666 1667 static int 1668 qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn, 1669 struct qed_iwarp_cm_info *cm_info, 1670 void *buf, 1671 u8 *remote_mac_addr, 1672 u8 *local_mac_addr, 1673 int *payload_len, int *tcp_start_offset) 1674 { 1675 struct vlan_ethhdr *vethh; 1676 bool vlan_valid = false; 1677 struct ipv6hdr *ip6h; 1678 struct ethhdr *ethh; 1679 struct tcphdr *tcph; 1680 struct iphdr *iph; 1681 int eth_hlen; 1682 int ip_hlen; 1683 int eth_type; 1684 int i; 1685 1686 ethh = buf; 1687 eth_type = ntohs(ethh->h_proto); 1688 if (eth_type == ETH_P_8021Q) { 1689 vlan_valid = true; 1690 vethh = (struct vlan_ethhdr *)ethh; 1691 cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK; 1692 eth_type = ntohs(vethh->h_vlan_encapsulated_proto); 1693 } 1694 1695 eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0); 1696 1697 if (!ether_addr_equal(ethh->h_dest, 1698 p_hwfn->p_rdma_info->iwarp.mac_addr)) { 1699 DP_VERBOSE(p_hwfn, 1700 QED_MSG_RDMA, 1701 "Got unexpected mac %pM instead of %pM\n", 1702 ethh->h_dest, p_hwfn->p_rdma_info->iwarp.mac_addr); 1703 return -EINVAL; 1704 } 1705 1706 ether_addr_copy(remote_mac_addr, ethh->h_source); 1707 ether_addr_copy(local_mac_addr, ethh->h_dest); 1708 1709 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n", 1710 eth_type, ethh->h_source); 1711 1712 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_hlen=%d destination mac: %pM\n", 1713 eth_hlen, ethh->h_dest); 1714 1715 iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen); 1716 1717 if (eth_type == ETH_P_IP) { 1718 if (iph->protocol != IPPROTO_TCP) { 1719 DP_NOTICE(p_hwfn, 1720 "Unexpected ip protocol on ll2 %x\n", 1721 iph->protocol); 1722 return -EINVAL; 1723 } 1724 1725 cm_info->local_ip[0] = ntohl(iph->daddr); 1726 cm_info->remote_ip[0] = ntohl(iph->saddr); 1727 cm_info->ip_version = QED_TCP_IPV4; 1728 1729 ip_hlen = (iph->ihl) * sizeof(u32); 1730 *payload_len = ntohs(iph->tot_len) - ip_hlen; 1731 } else if (eth_type == ETH_P_IPV6) { 1732 ip6h = (struct ipv6hdr *)iph; 1733 1734 if (ip6h->nexthdr != IPPROTO_TCP) { 1735 DP_NOTICE(p_hwfn, 1736 "Unexpected ip protocol on ll2 %x\n", 1737 iph->protocol); 1738 return -EINVAL; 1739 } 1740 1741 for (i = 0; i < 4; i++) { 1742 cm_info->local_ip[i] = 1743 ntohl(ip6h->daddr.in6_u.u6_addr32[i]); 1744 cm_info->remote_ip[i] = 1745 ntohl(ip6h->saddr.in6_u.u6_addr32[i]); 1746 } 1747 cm_info->ip_version = QED_TCP_IPV6; 1748 1749 ip_hlen = sizeof(*ip6h); 1750 *payload_len = ntohs(ip6h->payload_len); 1751 } else { 1752 DP_NOTICE(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type); 1753 return -EINVAL; 1754 } 1755 1756 tcph = (struct tcphdr *)((u8 *)iph + ip_hlen); 1757 1758 if (!tcph->syn) { 1759 DP_NOTICE(p_hwfn, 1760 "Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n", 1761 iph->ihl, tcph->source, tcph->dest); 1762 return -EINVAL; 1763 } 1764 1765 cm_info->local_port = ntohs(tcph->dest); 1766 cm_info->remote_port = ntohs(tcph->source); 1767 1768 qed_iwarp_print_cm_info(p_hwfn, cm_info); 1769 1770 *tcp_start_offset = eth_hlen + ip_hlen; 1771 1772 return 0; 1773 } 1774 1775 static struct qed_iwarp_fpdu *qed_iwarp_get_curr_fpdu(struct qed_hwfn *p_hwfn, 1776 u16 cid) 1777 { 1778 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1779 struct qed_iwarp_fpdu *partial_fpdu; 1780 u32 idx; 1781 1782 idx = cid - qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP); 1783 if (idx >= iwarp_info->max_num_partial_fpdus) { 1784 DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid, 1785 iwarp_info->max_num_partial_fpdus); 1786 return NULL; 1787 } 1788 1789 partial_fpdu = &iwarp_info->partial_fpdus[idx]; 1790 1791 return partial_fpdu; 1792 } 1793 1794 enum qed_iwarp_mpa_pkt_type { 1795 QED_IWARP_MPA_PKT_PACKED, 1796 QED_IWARP_MPA_PKT_PARTIAL, 1797 QED_IWARP_MPA_PKT_UNALIGNED 1798 }; 1799 1800 #define QED_IWARP_INVALID_FPDU_LENGTH 0xffff 1801 #define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2) 1802 #define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4) 1803 1804 /* Pad to multiple of 4 */ 1805 #define QED_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) ALIGN(data_len, 4) 1806 #define QED_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \ 1807 (QED_IWARP_PDU_DATA_LEN_WITH_PAD((_mpa_len) + \ 1808 QED_IWARP_MPA_FPDU_LENGTH_SIZE) + \ 1809 QED_IWARP_MPA_CRC32_DIGEST_SIZE) 1810 1811 /* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */ 1812 #define QED_IWARP_MAX_BDS_PER_FPDU 3 1813 1814 static const char * const pkt_type_str[] = { 1815 "QED_IWARP_MPA_PKT_PACKED", 1816 "QED_IWARP_MPA_PKT_PARTIAL", 1817 "QED_IWARP_MPA_PKT_UNALIGNED" 1818 }; 1819 1820 static int 1821 qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn, 1822 struct qed_iwarp_fpdu *fpdu, 1823 struct qed_iwarp_ll2_buff *buf); 1824 1825 static enum qed_iwarp_mpa_pkt_type 1826 qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn, 1827 struct qed_iwarp_fpdu *fpdu, 1828 u16 tcp_payload_len, u8 *mpa_data) 1829 { 1830 enum qed_iwarp_mpa_pkt_type pkt_type; 1831 u16 mpa_len; 1832 1833 if (fpdu->incomplete_bytes) { 1834 pkt_type = QED_IWARP_MPA_PKT_UNALIGNED; 1835 goto out; 1836 } 1837 1838 /* special case of one byte remaining... 1839 * lower byte will be read next packet 1840 */ 1841 if (tcp_payload_len == 1) { 1842 fpdu->fpdu_length = *mpa_data << BITS_PER_BYTE; 1843 pkt_type = QED_IWARP_MPA_PKT_PARTIAL; 1844 goto out; 1845 } 1846 1847 mpa_len = ntohs(*(__force __be16 *)mpa_data); 1848 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); 1849 1850 if (fpdu->fpdu_length <= tcp_payload_len) 1851 pkt_type = QED_IWARP_MPA_PKT_PACKED; 1852 else 1853 pkt_type = QED_IWARP_MPA_PKT_PARTIAL; 1854 1855 out: 1856 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1857 "MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n", 1858 pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len); 1859 1860 return pkt_type; 1861 } 1862 1863 static void 1864 qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf, 1865 struct qed_iwarp_fpdu *fpdu, 1866 struct unaligned_opaque_data *pkt_data, 1867 u16 tcp_payload_size, u8 placement_offset) 1868 { 1869 u16 first_mpa_offset = le16_to_cpu(pkt_data->first_mpa_offset); 1870 1871 fpdu->mpa_buf = buf; 1872 fpdu->pkt_hdr = buf->data_phys_addr + placement_offset; 1873 fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset; 1874 fpdu->mpa_frag = buf->data_phys_addr + first_mpa_offset; 1875 fpdu->mpa_frag_virt = (u8 *)(buf->data) + first_mpa_offset; 1876 1877 if (tcp_payload_size == 1) 1878 fpdu->incomplete_bytes = QED_IWARP_INVALID_FPDU_LENGTH; 1879 else if (tcp_payload_size < fpdu->fpdu_length) 1880 fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size; 1881 else 1882 fpdu->incomplete_bytes = 0; /* complete fpdu */ 1883 1884 fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes; 1885 } 1886 1887 static int 1888 qed_iwarp_cp_pkt(struct qed_hwfn *p_hwfn, 1889 struct qed_iwarp_fpdu *fpdu, 1890 struct unaligned_opaque_data *pkt_data, 1891 struct qed_iwarp_ll2_buff *buf, u16 tcp_payload_size) 1892 { 1893 u16 first_mpa_offset = le16_to_cpu(pkt_data->first_mpa_offset); 1894 u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf; 1895 int rc; 1896 1897 /* need to copy the data from the partial packet stored in fpdu 1898 * to the new buf, for this we also need to move the data currently 1899 * placed on the buf. The assumption is that the buffer is big enough 1900 * since fpdu_length <= mss, we use an intermediate buffer since 1901 * we may need to copy the new data to an overlapping location 1902 */ 1903 if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) { 1904 DP_ERR(p_hwfn, 1905 "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", 1906 buf->buff_size, fpdu->mpa_frag_len, 1907 tcp_payload_size, fpdu->incomplete_bytes); 1908 return -EINVAL; 1909 } 1910 1911 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1912 "MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n", 1913 fpdu->mpa_frag_virt, fpdu->mpa_frag_len, 1914 (u8 *)(buf->data) + first_mpa_offset, tcp_payload_size); 1915 1916 memcpy(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len); 1917 memcpy(tmp_buf + fpdu->mpa_frag_len, 1918 (u8 *)(buf->data) + first_mpa_offset, tcp_payload_size); 1919 1920 rc = qed_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf); 1921 if (rc) 1922 return rc; 1923 1924 /* If we managed to post the buffer copy the data to the new buffer 1925 * o/w this will occur in the next round... 1926 */ 1927 memcpy((u8 *)(buf->data), tmp_buf, 1928 fpdu->mpa_frag_len + tcp_payload_size); 1929 1930 fpdu->mpa_buf = buf; 1931 /* fpdu->pkt_hdr remains as is */ 1932 /* fpdu->mpa_frag is overridden with new buf */ 1933 fpdu->mpa_frag = buf->data_phys_addr; 1934 fpdu->mpa_frag_virt = buf->data; 1935 fpdu->mpa_frag_len += tcp_payload_size; 1936 1937 fpdu->incomplete_bytes -= tcp_payload_size; 1938 1939 DP_VERBOSE(p_hwfn, 1940 QED_MSG_RDMA, 1941 "MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n", 1942 buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size, 1943 fpdu->incomplete_bytes); 1944 1945 return 0; 1946 } 1947 1948 static void 1949 qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn, 1950 struct qed_iwarp_fpdu *fpdu, u8 *mpa_data) 1951 { 1952 u16 mpa_len; 1953 1954 /* Update incomplete packets if needed */ 1955 if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) { 1956 /* Missing lower byte is now available */ 1957 mpa_len = fpdu->fpdu_length | *mpa_data; 1958 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); 1959 /* one byte of hdr */ 1960 fpdu->mpa_frag_len = 1; 1961 fpdu->incomplete_bytes = fpdu->fpdu_length - 1; 1962 DP_VERBOSE(p_hwfn, 1963 QED_MSG_RDMA, 1964 "MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n", 1965 mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes); 1966 } 1967 } 1968 1969 #define QED_IWARP_IS_RIGHT_EDGE(_curr_pkt) \ 1970 (GET_FIELD((_curr_pkt)->flags, \ 1971 UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE)) 1972 1973 /* This function is used to recycle a buffer using the ll2 drop option. It 1974 * uses the mechanism to ensure that all buffers posted to tx before this one 1975 * were completed. The buffer sent here will be sent as a cookie in the tx 1976 * completion function and can then be reposted to rx chain when done. The flow 1977 * that requires this is the flow where a FPDU splits over more than 3 tcp 1978 * segments. In this case the driver needs to re-post a rx buffer instead of 1979 * the one received, but driver can't simply repost a buffer it copied from 1980 * as there is a case where the buffer was originally a packed FPDU, and is 1981 * partially posted to FW. Driver needs to ensure FW is done with it. 1982 */ 1983 static int 1984 qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn, 1985 struct qed_iwarp_fpdu *fpdu, 1986 struct qed_iwarp_ll2_buff *buf) 1987 { 1988 struct qed_ll2_tx_pkt_info tx_pkt; 1989 u8 ll2_handle; 1990 int rc; 1991 1992 memset(&tx_pkt, 0, sizeof(tx_pkt)); 1993 tx_pkt.num_of_bds = 1; 1994 tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP; 1995 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; 1996 tx_pkt.first_frag = fpdu->pkt_hdr; 1997 tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 1998 buf->piggy_buf = NULL; 1999 tx_pkt.cookie = buf; 2000 2001 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 2002 2003 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 2004 if (rc) 2005 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2006 "Can't drop packet rc=%d\n", rc); 2007 2008 DP_VERBOSE(p_hwfn, 2009 QED_MSG_RDMA, 2010 "MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n", 2011 (unsigned long int)tx_pkt.first_frag, 2012 tx_pkt.first_frag_len, buf, rc); 2013 2014 return rc; 2015 } 2016 2017 static int 2018 qed_iwarp_win_right_edge(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu) 2019 { 2020 struct qed_ll2_tx_pkt_info tx_pkt; 2021 u8 ll2_handle; 2022 int rc; 2023 2024 memset(&tx_pkt, 0, sizeof(tx_pkt)); 2025 tx_pkt.num_of_bds = 1; 2026 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 2027 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; 2028 2029 tx_pkt.first_frag = fpdu->pkt_hdr; 2030 tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 2031 tx_pkt.enable_ip_cksum = true; 2032 tx_pkt.enable_l4_cksum = true; 2033 tx_pkt.calc_ip_len = true; 2034 /* vlan overload with enum iwarp_ll2_tx_queues */ 2035 tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE; 2036 2037 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 2038 2039 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 2040 if (rc) 2041 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2042 "Can't send right edge rc=%d\n", rc); 2043 DP_VERBOSE(p_hwfn, 2044 QED_MSG_RDMA, 2045 "MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n", 2046 tx_pkt.num_of_bds, 2047 (unsigned long int)tx_pkt.first_frag, 2048 tx_pkt.first_frag_len, rc); 2049 2050 return rc; 2051 } 2052 2053 static int 2054 qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn, 2055 struct qed_iwarp_fpdu *fpdu, 2056 struct unaligned_opaque_data *curr_pkt, 2057 struct qed_iwarp_ll2_buff *buf, 2058 u16 tcp_payload_size, enum qed_iwarp_mpa_pkt_type pkt_type) 2059 { 2060 struct qed_ll2_tx_pkt_info tx_pkt; 2061 u16 first_mpa_offset; 2062 u8 ll2_handle; 2063 int rc; 2064 2065 memset(&tx_pkt, 0, sizeof(tx_pkt)); 2066 2067 /* An unaligned packet means it's split over two tcp segments. So the 2068 * complete packet requires 3 bds, one for the header, one for the 2069 * part of the fpdu of the first tcp segment, and the last fragment 2070 * will point to the remainder of the fpdu. A packed pdu, requires only 2071 * two bds, one for the header and one for the data. 2072 */ 2073 tx_pkt.num_of_bds = (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2; 2074 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 2075 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; /* offset in words */ 2076 2077 /* Send the mpa_buf only with the last fpdu (in case of packed) */ 2078 if (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED || 2079 tcp_payload_size <= fpdu->fpdu_length) 2080 tx_pkt.cookie = fpdu->mpa_buf; 2081 2082 tx_pkt.first_frag = fpdu->pkt_hdr; 2083 tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 2084 tx_pkt.enable_ip_cksum = true; 2085 tx_pkt.enable_l4_cksum = true; 2086 tx_pkt.calc_ip_len = true; 2087 /* vlan overload with enum iwarp_ll2_tx_queues */ 2088 tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE; 2089 2090 /* special case of unaligned packet and not packed, need to send 2091 * both buffers as cookie to release. 2092 */ 2093 if (tcp_payload_size == fpdu->incomplete_bytes) 2094 fpdu->mpa_buf->piggy_buf = buf; 2095 2096 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 2097 2098 /* Set first fragment to header */ 2099 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 2100 if (rc) 2101 goto out; 2102 2103 /* Set second fragment to first part of packet */ 2104 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle, 2105 fpdu->mpa_frag, 2106 fpdu->mpa_frag_len); 2107 if (rc) 2108 goto out; 2109 2110 if (!fpdu->incomplete_bytes) 2111 goto out; 2112 2113 first_mpa_offset = le16_to_cpu(curr_pkt->first_mpa_offset); 2114 2115 /* Set third fragment to second part of the packet */ 2116 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, 2117 ll2_handle, 2118 buf->data_phys_addr + 2119 first_mpa_offset, 2120 fpdu->incomplete_bytes); 2121 out: 2122 DP_VERBOSE(p_hwfn, 2123 QED_MSG_RDMA, 2124 "MPA_ALIGN: Sent FPDU num_bds=%d first_frag_len=%x, mpa_frag_len=0x%x, incomplete_bytes:0x%x rc=%d\n", 2125 tx_pkt.num_of_bds, 2126 tx_pkt.first_frag_len, 2127 fpdu->mpa_frag_len, 2128 fpdu->incomplete_bytes, rc); 2129 2130 return rc; 2131 } 2132 2133 static void 2134 qed_iwarp_mpa_get_data(struct qed_hwfn *p_hwfn, 2135 struct unaligned_opaque_data *curr_pkt, 2136 u32 opaque_data0, u32 opaque_data1) 2137 { 2138 u64 opaque_data; 2139 2140 opaque_data = HILO_64(cpu_to_le32(opaque_data1), 2141 cpu_to_le32(opaque_data0)); 2142 *curr_pkt = *((struct unaligned_opaque_data *)&opaque_data); 2143 2144 le16_add_cpu(&curr_pkt->first_mpa_offset, 2145 curr_pkt->tcp_payload_offset); 2146 } 2147 2148 /* This function is called when an unaligned or incomplete MPA packet arrives 2149 * driver needs to align the packet, perhaps using previous data and send 2150 * it down to FW once it is aligned. 2151 */ 2152 static int 2153 qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn, 2154 struct qed_iwarp_ll2_mpa_buf *mpa_buf) 2155 { 2156 struct unaligned_opaque_data *curr_pkt = &mpa_buf->data; 2157 struct qed_iwarp_ll2_buff *buf = mpa_buf->ll2_buf; 2158 enum qed_iwarp_mpa_pkt_type pkt_type; 2159 struct qed_iwarp_fpdu *fpdu; 2160 u16 cid, first_mpa_offset; 2161 int rc = -EINVAL; 2162 u8 *mpa_data; 2163 2164 cid = le32_to_cpu(curr_pkt->cid); 2165 2166 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)cid); 2167 if (!fpdu) { /* something corrupt with cid, post rx back */ 2168 DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n", 2169 cid); 2170 goto err; 2171 } 2172 2173 do { 2174 first_mpa_offset = le16_to_cpu(curr_pkt->first_mpa_offset); 2175 mpa_data = ((u8 *)(buf->data) + first_mpa_offset); 2176 2177 pkt_type = qed_iwarp_mpa_classify(p_hwfn, fpdu, 2178 mpa_buf->tcp_payload_len, 2179 mpa_data); 2180 2181 switch (pkt_type) { 2182 case QED_IWARP_MPA_PKT_PARTIAL: 2183 qed_iwarp_init_fpdu(buf, fpdu, 2184 curr_pkt, 2185 mpa_buf->tcp_payload_len, 2186 mpa_buf->placement_offset); 2187 2188 if (!QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) { 2189 mpa_buf->tcp_payload_len = 0; 2190 break; 2191 } 2192 2193 rc = qed_iwarp_win_right_edge(p_hwfn, fpdu); 2194 2195 if (rc) { 2196 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2197 "Can't send FPDU:reset rc=%d\n", rc); 2198 memset(fpdu, 0, sizeof(*fpdu)); 2199 break; 2200 } 2201 2202 mpa_buf->tcp_payload_len = 0; 2203 break; 2204 case QED_IWARP_MPA_PKT_PACKED: 2205 qed_iwarp_init_fpdu(buf, fpdu, 2206 curr_pkt, 2207 mpa_buf->tcp_payload_len, 2208 mpa_buf->placement_offset); 2209 2210 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, 2211 mpa_buf->tcp_payload_len, 2212 pkt_type); 2213 if (rc) { 2214 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2215 "Can't send FPDU:reset rc=%d\n", rc); 2216 memset(fpdu, 0, sizeof(*fpdu)); 2217 break; 2218 } 2219 2220 mpa_buf->tcp_payload_len -= fpdu->fpdu_length; 2221 le16_add_cpu(&curr_pkt->first_mpa_offset, 2222 fpdu->fpdu_length); 2223 break; 2224 case QED_IWARP_MPA_PKT_UNALIGNED: 2225 qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data); 2226 if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) { 2227 /* special handling of fpdu split over more 2228 * than 2 segments 2229 */ 2230 if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) { 2231 rc = qed_iwarp_win_right_edge(p_hwfn, 2232 fpdu); 2233 /* packet will be re-processed later */ 2234 if (rc) 2235 return rc; 2236 } 2237 2238 rc = qed_iwarp_cp_pkt(p_hwfn, fpdu, curr_pkt, 2239 buf, 2240 mpa_buf->tcp_payload_len); 2241 if (rc) /* packet will be re-processed later */ 2242 return rc; 2243 2244 mpa_buf->tcp_payload_len = 0; 2245 break; 2246 } 2247 2248 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, 2249 mpa_buf->tcp_payload_len, 2250 pkt_type); 2251 if (rc) { 2252 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2253 "Can't send FPDU:delay rc=%d\n", rc); 2254 /* don't reset fpdu -> we need it for next 2255 * classify 2256 */ 2257 break; 2258 } 2259 2260 mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes; 2261 le16_add_cpu(&curr_pkt->first_mpa_offset, 2262 fpdu->incomplete_bytes); 2263 2264 /* The framed PDU was sent - no more incomplete bytes */ 2265 fpdu->incomplete_bytes = 0; 2266 break; 2267 } 2268 } while (mpa_buf->tcp_payload_len && !rc); 2269 2270 return rc; 2271 2272 err: 2273 qed_iwarp_ll2_post_rx(p_hwfn, 2274 buf, 2275 p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle); 2276 return rc; 2277 } 2278 2279 static void qed_iwarp_process_pending_pkts(struct qed_hwfn *p_hwfn) 2280 { 2281 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2282 struct qed_iwarp_ll2_mpa_buf *mpa_buf = NULL; 2283 int rc; 2284 2285 while (!list_empty(&iwarp_info->mpa_buf_pending_list)) { 2286 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_pending_list, 2287 struct qed_iwarp_ll2_mpa_buf, 2288 list_entry); 2289 2290 rc = qed_iwarp_process_mpa_pkt(p_hwfn, mpa_buf); 2291 2292 /* busy means break and continue processing later, don't 2293 * remove the buf from the pending list. 2294 */ 2295 if (rc == -EBUSY) 2296 break; 2297 2298 list_move_tail(&mpa_buf->list_entry, 2299 &iwarp_info->mpa_buf_list); 2300 2301 if (rc) { /* different error, don't continue */ 2302 DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc); 2303 break; 2304 } 2305 } 2306 } 2307 2308 static void 2309 qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) 2310 { 2311 struct qed_iwarp_ll2_mpa_buf *mpa_buf; 2312 struct qed_iwarp_info *iwarp_info; 2313 struct qed_hwfn *p_hwfn = cxt; 2314 u16 first_mpa_offset; 2315 2316 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2317 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_list, 2318 struct qed_iwarp_ll2_mpa_buf, list_entry); 2319 if (!mpa_buf) { 2320 DP_ERR(p_hwfn, "No free mpa buf\n"); 2321 goto err; 2322 } 2323 2324 list_del(&mpa_buf->list_entry); 2325 qed_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data, 2326 data->opaque_data_0, data->opaque_data_1); 2327 2328 first_mpa_offset = le16_to_cpu(mpa_buf->data.first_mpa_offset); 2329 2330 DP_VERBOSE(p_hwfn, 2331 QED_MSG_RDMA, 2332 "LL2 MPA CompRx payload_len:0x%x\tfirst_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n", 2333 data->length.packet_length, first_mpa_offset, 2334 mpa_buf->data.tcp_payload_offset, mpa_buf->data.flags, 2335 mpa_buf->data.cid); 2336 2337 mpa_buf->ll2_buf = data->cookie; 2338 mpa_buf->tcp_payload_len = data->length.packet_length - 2339 first_mpa_offset; 2340 2341 first_mpa_offset += data->u.placement_offset; 2342 mpa_buf->data.first_mpa_offset = cpu_to_le16(first_mpa_offset); 2343 mpa_buf->placement_offset = data->u.placement_offset; 2344 2345 list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_pending_list); 2346 2347 qed_iwarp_process_pending_pkts(p_hwfn); 2348 return; 2349 err: 2350 qed_iwarp_ll2_post_rx(p_hwfn, data->cookie, 2351 iwarp_info->ll2_mpa_handle); 2352 } 2353 2354 static void 2355 qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) 2356 { 2357 struct qed_iwarp_ll2_buff *buf = data->cookie; 2358 struct qed_iwarp_listener *listener; 2359 struct qed_ll2_tx_pkt_info tx_pkt; 2360 struct qed_iwarp_cm_info cm_info; 2361 struct qed_hwfn *p_hwfn = cxt; 2362 u8 remote_mac_addr[ETH_ALEN]; 2363 u8 local_mac_addr[ETH_ALEN]; 2364 struct qed_iwarp_ep *ep; 2365 int tcp_start_offset; 2366 u8 ll2_syn_handle; 2367 int payload_len; 2368 u32 hdr_size; 2369 int rc; 2370 2371 memset(&cm_info, 0, sizeof(cm_info)); 2372 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle; 2373 2374 /* Check if packet was received with errors... */ 2375 if (data->err_flags) { 2376 DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n", 2377 data->err_flags); 2378 goto err; 2379 } 2380 2381 if (GET_FIELD(data->parse_flags, 2382 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) && 2383 GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) { 2384 DP_NOTICE(p_hwfn, "Syn packet received with checksum error\n"); 2385 goto err; 2386 } 2387 2388 rc = qed_iwarp_parse_rx_pkt(p_hwfn, &cm_info, (u8 *)(buf->data) + 2389 data->u.placement_offset, remote_mac_addr, 2390 local_mac_addr, &payload_len, 2391 &tcp_start_offset); 2392 if (rc) 2393 goto err; 2394 2395 /* Check if there is a listener for this 4-tuple+vlan */ 2396 listener = qed_iwarp_get_listener(p_hwfn, &cm_info); 2397 if (!listener) { 2398 DP_VERBOSE(p_hwfn, 2399 QED_MSG_RDMA, 2400 "SYN received on tuple not listened on parse_flags=%d packet len=%d\n", 2401 data->parse_flags, data->length.packet_length); 2402 2403 memset(&tx_pkt, 0, sizeof(tx_pkt)); 2404 tx_pkt.num_of_bds = 1; 2405 tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2; 2406 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 2407 tx_pkt.first_frag = buf->data_phys_addr + 2408 data->u.placement_offset; 2409 tx_pkt.first_frag_len = data->length.packet_length; 2410 tx_pkt.cookie = buf; 2411 2412 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_syn_handle, 2413 &tx_pkt, true); 2414 2415 if (rc) { 2416 DP_NOTICE(p_hwfn, 2417 "Can't post SYN back to chip rc=%d\n", rc); 2418 goto err; 2419 } 2420 return; 2421 } 2422 2423 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n"); 2424 /* There may be an open ep on this connection if this is a syn 2425 * retrasnmit... need to make sure there isn't... 2426 */ 2427 if (qed_iwarp_ep_exists(p_hwfn, &cm_info)) 2428 goto err; 2429 2430 ep = qed_iwarp_get_free_ep(p_hwfn); 2431 if (!ep) 2432 goto err; 2433 2434 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2435 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list); 2436 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2437 2438 ether_addr_copy(ep->remote_mac_addr, remote_mac_addr); 2439 ether_addr_copy(ep->local_mac_addr, local_mac_addr); 2440 2441 memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info)); 2442 2443 hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60); 2444 ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size; 2445 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss); 2446 2447 ep->event_cb = listener->event_cb; 2448 ep->cb_context = listener->cb_context; 2449 ep->connect_mode = TCP_CONNECT_PASSIVE; 2450 2451 ep->syn = buf; 2452 ep->syn_ip_payload_length = (u16)payload_len; 2453 ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset + 2454 tcp_start_offset; 2455 2456 rc = qed_iwarp_tcp_offload(p_hwfn, ep); 2457 if (rc) { 2458 qed_iwarp_return_ep(p_hwfn, ep); 2459 goto err; 2460 } 2461 2462 return; 2463 err: 2464 qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle); 2465 } 2466 2467 static void qed_iwarp_ll2_rel_rx_pkt(void *cxt, u8 connection_handle, 2468 void *cookie, dma_addr_t rx_buf_addr, 2469 bool b_last_packet) 2470 { 2471 struct qed_iwarp_ll2_buff *buffer = cookie; 2472 struct qed_hwfn *p_hwfn = cxt; 2473 2474 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size, 2475 buffer->data, buffer->data_phys_addr); 2476 kfree(buffer); 2477 } 2478 2479 static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle, 2480 void *cookie, dma_addr_t first_frag_addr, 2481 bool b_last_fragment, bool b_last_packet) 2482 { 2483 struct qed_iwarp_ll2_buff *buffer = cookie; 2484 struct qed_iwarp_ll2_buff *piggy; 2485 struct qed_hwfn *p_hwfn = cxt; 2486 2487 if (!buffer) /* can happen in packed mpa unaligned... */ 2488 return; 2489 2490 /* this was originally an rx packet, post it back */ 2491 piggy = buffer->piggy_buf; 2492 if (piggy) { 2493 buffer->piggy_buf = NULL; 2494 qed_iwarp_ll2_post_rx(p_hwfn, piggy, connection_handle); 2495 } 2496 2497 qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle); 2498 2499 if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle) 2500 qed_iwarp_process_pending_pkts(p_hwfn); 2501 2502 return; 2503 } 2504 2505 static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle, 2506 void *cookie, dma_addr_t first_frag_addr, 2507 bool b_last_fragment, bool b_last_packet) 2508 { 2509 struct qed_iwarp_ll2_buff *buffer = cookie; 2510 struct qed_hwfn *p_hwfn = cxt; 2511 2512 if (!buffer) 2513 return; 2514 2515 if (buffer->piggy_buf) { 2516 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 2517 buffer->piggy_buf->buff_size, 2518 buffer->piggy_buf->data, 2519 buffer->piggy_buf->data_phys_addr); 2520 2521 kfree(buffer->piggy_buf); 2522 } 2523 2524 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size, 2525 buffer->data, buffer->data_phys_addr); 2526 2527 kfree(buffer); 2528 } 2529 2530 /* The only slowpath for iwarp ll2 is unalign flush. When this completion 2531 * is received, need to reset the FPDU. 2532 */ 2533 static void 2534 qed_iwarp_ll2_slowpath(void *cxt, 2535 u8 connection_handle, 2536 u32 opaque_data_0, u32 opaque_data_1) 2537 { 2538 struct unaligned_opaque_data unalign_data; 2539 struct qed_hwfn *p_hwfn = cxt; 2540 struct qed_iwarp_fpdu *fpdu; 2541 u32 cid; 2542 2543 qed_iwarp_mpa_get_data(p_hwfn, &unalign_data, 2544 opaque_data_0, opaque_data_1); 2545 2546 cid = le32_to_cpu(unalign_data.cid); 2547 2548 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "(0x%x) Flush fpdu\n", cid); 2549 2550 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)cid); 2551 if (fpdu) 2552 memset(fpdu, 0, sizeof(*fpdu)); 2553 } 2554 2555 static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn) 2556 { 2557 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2558 int rc = 0; 2559 2560 if (iwarp_info->ll2_syn_handle != QED_IWARP_HANDLE_INVAL) { 2561 rc = qed_ll2_terminate_connection(p_hwfn, 2562 iwarp_info->ll2_syn_handle); 2563 if (rc) 2564 DP_INFO(p_hwfn, "Failed to terminate syn connection\n"); 2565 2566 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_syn_handle); 2567 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; 2568 } 2569 2570 if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) { 2571 rc = qed_ll2_terminate_connection(p_hwfn, 2572 iwarp_info->ll2_ooo_handle); 2573 if (rc) 2574 DP_INFO(p_hwfn, "Failed to terminate ooo connection\n"); 2575 2576 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle); 2577 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; 2578 } 2579 2580 if (iwarp_info->ll2_mpa_handle != QED_IWARP_HANDLE_INVAL) { 2581 rc = qed_ll2_terminate_connection(p_hwfn, 2582 iwarp_info->ll2_mpa_handle); 2583 if (rc) 2584 DP_INFO(p_hwfn, "Failed to terminate mpa connection\n"); 2585 2586 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_mpa_handle); 2587 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL; 2588 } 2589 2590 qed_llh_remove_mac_filter(p_hwfn->cdev, 0, 2591 p_hwfn->p_rdma_info->iwarp.mac_addr); 2592 2593 return rc; 2594 } 2595 2596 static int 2597 qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn, 2598 int num_rx_bufs, int buff_size, u8 ll2_handle) 2599 { 2600 struct qed_iwarp_ll2_buff *buffer; 2601 int rc = 0; 2602 int i; 2603 2604 for (i = 0; i < num_rx_bufs; i++) { 2605 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 2606 if (!buffer) { 2607 rc = -ENOMEM; 2608 break; 2609 } 2610 2611 buffer->data = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 2612 buff_size, 2613 &buffer->data_phys_addr, 2614 GFP_KERNEL); 2615 if (!buffer->data) { 2616 kfree(buffer); 2617 rc = -ENOMEM; 2618 break; 2619 } 2620 2621 buffer->buff_size = buff_size; 2622 rc = qed_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle); 2623 if (rc) 2624 /* buffers will be deallocated by qed_ll2 */ 2625 break; 2626 } 2627 return rc; 2628 } 2629 2630 #define QED_IWARP_MAX_BUF_SIZE(mtu) \ 2631 ALIGN((mtu) + ETH_HLEN + 2 * VLAN_HLEN + 2 + ETH_CACHE_LINE_SIZE, \ 2632 ETH_CACHE_LINE_SIZE) 2633 2634 static int 2635 qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, 2636 struct qed_rdma_start_in_params *params, 2637 u32 rcv_wnd_size) 2638 { 2639 struct qed_iwarp_info *iwarp_info; 2640 struct qed_ll2_acquire_data data; 2641 struct qed_ll2_cbs cbs; 2642 u32 buff_size; 2643 u16 n_ooo_bufs; 2644 int rc = 0; 2645 int i; 2646 2647 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2648 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; 2649 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; 2650 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL; 2651 2652 iwarp_info->max_mtu = params->max_mtu; 2653 2654 ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr); 2655 2656 rc = qed_llh_add_mac_filter(p_hwfn->cdev, 0, params->mac_addr); 2657 if (rc) 2658 return rc; 2659 2660 /* Start SYN connection */ 2661 cbs.rx_comp_cb = qed_iwarp_ll2_comp_syn_pkt; 2662 cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt; 2663 cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt; 2664 cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt; 2665 cbs.slowpath_cb = NULL; 2666 cbs.cookie = p_hwfn; 2667 2668 memset(&data, 0, sizeof(data)); 2669 data.input.conn_type = QED_LL2_TYPE_IWARP; 2670 /* SYN will use ctx based queues */ 2671 data.input.rx_conn_type = QED_LL2_RX_TYPE_CTX; 2672 data.input.mtu = params->max_mtu; 2673 data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE; 2674 data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE; 2675 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */ 2676 data.input.tx_tc = PKT_LB_TC; 2677 data.input.tx_dest = QED_LL2_TX_DEST_LB; 2678 data.p_connection_handle = &iwarp_info->ll2_syn_handle; 2679 data.cbs = &cbs; 2680 2681 rc = qed_ll2_acquire_connection(p_hwfn, &data); 2682 if (rc) { 2683 DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n"); 2684 qed_llh_remove_mac_filter(p_hwfn->cdev, 0, params->mac_addr); 2685 return rc; 2686 } 2687 2688 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle); 2689 if (rc) { 2690 DP_NOTICE(p_hwfn, "Failed to establish LL2 connection\n"); 2691 goto err; 2692 } 2693 2694 buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu); 2695 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn, 2696 QED_IWARP_LL2_SYN_RX_SIZE, 2697 buff_size, 2698 iwarp_info->ll2_syn_handle); 2699 if (rc) 2700 goto err; 2701 2702 /* Start OOO connection */ 2703 data.input.conn_type = QED_LL2_TYPE_OOO; 2704 /* OOO/unaligned will use legacy ll2 queues (ram based) */ 2705 data.input.rx_conn_type = QED_LL2_RX_TYPE_LEGACY; 2706 data.input.mtu = params->max_mtu; 2707 2708 n_ooo_bufs = (QED_IWARP_MAX_OOO * rcv_wnd_size) / 2709 iwarp_info->max_mtu; 2710 n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE); 2711 2712 data.input.rx_num_desc = n_ooo_bufs; 2713 data.input.rx_num_ooo_buffers = n_ooo_bufs; 2714 2715 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */ 2716 data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE; 2717 data.p_connection_handle = &iwarp_info->ll2_ooo_handle; 2718 2719 rc = qed_ll2_acquire_connection(p_hwfn, &data); 2720 if (rc) 2721 goto err; 2722 2723 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle); 2724 if (rc) 2725 goto err; 2726 2727 /* Start Unaligned MPA connection */ 2728 cbs.rx_comp_cb = qed_iwarp_ll2_comp_mpa_pkt; 2729 cbs.slowpath_cb = qed_iwarp_ll2_slowpath; 2730 2731 memset(&data, 0, sizeof(data)); 2732 data.input.conn_type = QED_LL2_TYPE_IWARP; 2733 data.input.mtu = params->max_mtu; 2734 /* FW requires that once a packet arrives OOO, it must have at 2735 * least 2 rx buffers available on the unaligned connection 2736 * for handling the case that it is a partial fpdu. 2737 */ 2738 data.input.rx_num_desc = n_ooo_bufs * 2; 2739 data.input.tx_num_desc = data.input.rx_num_desc; 2740 data.input.tx_max_bds_per_packet = QED_IWARP_MAX_BDS_PER_FPDU; 2741 data.input.tx_tc = PKT_LB_TC; 2742 data.input.tx_dest = QED_LL2_TX_DEST_LB; 2743 data.p_connection_handle = &iwarp_info->ll2_mpa_handle; 2744 data.input.secondary_queue = true; 2745 data.cbs = &cbs; 2746 2747 rc = qed_ll2_acquire_connection(p_hwfn, &data); 2748 if (rc) 2749 goto err; 2750 2751 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle); 2752 if (rc) 2753 goto err; 2754 2755 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn, 2756 data.input.rx_num_desc, 2757 buff_size, 2758 iwarp_info->ll2_mpa_handle); 2759 if (rc) 2760 goto err; 2761 2762 iwarp_info->partial_fpdus = kcalloc((u16)p_hwfn->p_rdma_info->num_qps, 2763 sizeof(*iwarp_info->partial_fpdus), 2764 GFP_KERNEL); 2765 if (!iwarp_info->partial_fpdus) { 2766 rc = -ENOMEM; 2767 goto err; 2768 } 2769 2770 iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps; 2771 2772 iwarp_info->mpa_intermediate_buf = kzalloc(buff_size, GFP_KERNEL); 2773 if (!iwarp_info->mpa_intermediate_buf) { 2774 rc = -ENOMEM; 2775 goto err; 2776 } 2777 2778 /* The mpa_bufs array serves for pending RX packets received on the 2779 * mpa ll2 that don't have place on the tx ring and require later 2780 * processing. We can't fail on allocation of such a struct therefore 2781 * we allocate enough to take care of all rx packets 2782 */ 2783 iwarp_info->mpa_bufs = kcalloc(data.input.rx_num_desc, 2784 sizeof(*iwarp_info->mpa_bufs), 2785 GFP_KERNEL); 2786 if (!iwarp_info->mpa_bufs) { 2787 rc = -ENOMEM; 2788 goto err; 2789 } 2790 2791 INIT_LIST_HEAD(&iwarp_info->mpa_buf_pending_list); 2792 INIT_LIST_HEAD(&iwarp_info->mpa_buf_list); 2793 for (i = 0; i < data.input.rx_num_desc; i++) 2794 list_add_tail(&iwarp_info->mpa_bufs[i].list_entry, 2795 &iwarp_info->mpa_buf_list); 2796 return rc; 2797 err: 2798 qed_iwarp_ll2_stop(p_hwfn); 2799 2800 return rc; 2801 } 2802 2803 static struct { 2804 u32 two_ports; 2805 u32 four_ports; 2806 } qed_iwarp_rcv_wnd_size[MAX_CHIP_IDS] = { 2807 {QED_IWARP_RCV_WND_SIZE_DEF_BB_2P, QED_IWARP_RCV_WND_SIZE_DEF_BB_4P}, 2808 {QED_IWARP_RCV_WND_SIZE_DEF_AH_2P, QED_IWARP_RCV_WND_SIZE_DEF_AH_4P} 2809 }; 2810 2811 int qed_iwarp_setup(struct qed_hwfn *p_hwfn, 2812 struct qed_rdma_start_in_params *params) 2813 { 2814 struct qed_dev *cdev = p_hwfn->cdev; 2815 struct qed_iwarp_info *iwarp_info; 2816 enum chip_ids chip_id; 2817 u32 rcv_wnd_size; 2818 2819 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2820 2821 iwarp_info->tcp_flags = QED_IWARP_TS_EN; 2822 2823 chip_id = QED_IS_BB(cdev) ? CHIP_BB : CHIP_K2; 2824 rcv_wnd_size = (qed_device_num_ports(cdev) == 4) ? 2825 qed_iwarp_rcv_wnd_size[chip_id].four_ports : 2826 qed_iwarp_rcv_wnd_size[chip_id].two_ports; 2827 2828 /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */ 2829 iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) - 2830 ilog2(QED_IWARP_RCV_WND_SIZE_MIN); 2831 iwarp_info->rcv_wnd_size = rcv_wnd_size >> iwarp_info->rcv_wnd_scale; 2832 iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED; 2833 iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED; 2834 2835 iwarp_info->peer2peer = QED_IWARP_PARAM_P2P; 2836 2837 iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND | 2838 MPA_RTR_TYPE_ZERO_WRITE | 2839 MPA_RTR_TYPE_ZERO_READ; 2840 2841 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock); 2842 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list); 2843 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list); 2844 2845 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP, 2846 qed_iwarp_async_event); 2847 qed_ooo_setup(p_hwfn); 2848 2849 return qed_iwarp_ll2_start(p_hwfn, params, rcv_wnd_size); 2850 } 2851 2852 int qed_iwarp_stop(struct qed_hwfn *p_hwfn) 2853 { 2854 int rc; 2855 2856 qed_iwarp_free_prealloc_ep(p_hwfn); 2857 rc = qed_iwarp_wait_for_all_cids(p_hwfn); 2858 if (rc) 2859 return rc; 2860 2861 return qed_iwarp_ll2_stop(p_hwfn); 2862 } 2863 2864 static void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn, 2865 struct qed_iwarp_ep *ep, 2866 u8 fw_return_code) 2867 { 2868 struct qed_iwarp_cm_event_params params; 2869 2870 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_ERROR, true); 2871 2872 params.event = QED_IWARP_EVENT_CLOSE; 2873 params.ep_context = ep; 2874 params.cm_info = &ep->cm_info; 2875 params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ? 2876 0 : -ECONNRESET; 2877 2878 /* paired with READ_ONCE in destroy_qp */ 2879 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED); 2880 2881 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2882 list_del(&ep->list_entry); 2883 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2884 2885 ep->event_cb(ep->cb_context, ¶ms); 2886 } 2887 2888 static void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn, 2889 struct qed_iwarp_ep *ep, 2890 int fw_ret_code) 2891 { 2892 struct qed_iwarp_cm_event_params params; 2893 bool event_cb = false; 2894 2895 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n", 2896 ep->cid, fw_ret_code); 2897 2898 switch (fw_ret_code) { 2899 case IWARP_EXCEPTION_DETECTED_LLP_CLOSED: 2900 params.status = 0; 2901 params.event = QED_IWARP_EVENT_DISCONNECT; 2902 event_cb = true; 2903 break; 2904 case IWARP_EXCEPTION_DETECTED_LLP_RESET: 2905 params.status = -ECONNRESET; 2906 params.event = QED_IWARP_EVENT_DISCONNECT; 2907 event_cb = true; 2908 break; 2909 case IWARP_EXCEPTION_DETECTED_RQ_EMPTY: 2910 params.event = QED_IWARP_EVENT_RQ_EMPTY; 2911 event_cb = true; 2912 break; 2913 case IWARP_EXCEPTION_DETECTED_IRQ_FULL: 2914 params.event = QED_IWARP_EVENT_IRQ_FULL; 2915 event_cb = true; 2916 break; 2917 case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT: 2918 params.event = QED_IWARP_EVENT_LLP_TIMEOUT; 2919 event_cb = true; 2920 break; 2921 case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR: 2922 params.event = QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR; 2923 event_cb = true; 2924 break; 2925 case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW: 2926 params.event = QED_IWARP_EVENT_CQ_OVERFLOW; 2927 event_cb = true; 2928 break; 2929 case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC: 2930 params.event = QED_IWARP_EVENT_QP_CATASTROPHIC; 2931 event_cb = true; 2932 break; 2933 case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR: 2934 params.event = QED_IWARP_EVENT_LOCAL_ACCESS_ERROR; 2935 event_cb = true; 2936 break; 2937 case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR: 2938 params.event = QED_IWARP_EVENT_REMOTE_OPERATION_ERROR; 2939 event_cb = true; 2940 break; 2941 case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED: 2942 params.event = QED_IWARP_EVENT_TERMINATE_RECEIVED; 2943 event_cb = true; 2944 break; 2945 default: 2946 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2947 "Unhandled exception received...fw_ret_code=%d\n", 2948 fw_ret_code); 2949 break; 2950 } 2951 2952 if (event_cb) { 2953 params.ep_context = ep; 2954 params.cm_info = &ep->cm_info; 2955 ep->event_cb(ep->cb_context, ¶ms); 2956 } 2957 } 2958 2959 static void 2960 qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn, 2961 struct qed_iwarp_ep *ep, u8 fw_return_code) 2962 { 2963 struct qed_iwarp_cm_event_params params; 2964 2965 memset(¶ms, 0, sizeof(params)); 2966 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE; 2967 params.ep_context = ep; 2968 params.cm_info = &ep->cm_info; 2969 /* paired with READ_ONCE in destroy_qp */ 2970 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED); 2971 2972 switch (fw_return_code) { 2973 case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET: 2974 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2975 "%s(0x%x) TCP connect got invalid packet\n", 2976 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2977 params.status = -ECONNRESET; 2978 break; 2979 case IWARP_CONN_ERROR_TCP_CONNECTION_RST: 2980 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2981 "%s(0x%x) TCP Connection Reset\n", 2982 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2983 params.status = -ECONNRESET; 2984 break; 2985 case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT: 2986 DP_NOTICE(p_hwfn, "%s(0x%x) TCP timeout\n", 2987 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2988 params.status = -EBUSY; 2989 break; 2990 case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER: 2991 DP_NOTICE(p_hwfn, "%s(0x%x) MPA not supported VER\n", 2992 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2993 params.status = -ECONNREFUSED; 2994 break; 2995 case IWARP_CONN_ERROR_MPA_INVALID_PACKET: 2996 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n", 2997 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2998 params.status = -ECONNRESET; 2999 break; 3000 default: 3001 DP_ERR(p_hwfn, 3002 "%s(0x%x) Unexpected return code tcp connect: %d\n", 3003 QED_IWARP_CONNECT_MODE_STRING(ep), 3004 ep->tcp_cid, fw_return_code); 3005 params.status = -ECONNRESET; 3006 break; 3007 } 3008 3009 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 3010 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 3011 qed_iwarp_return_ep(p_hwfn, ep); 3012 } else { 3013 ep->event_cb(ep->cb_context, ¶ms); 3014 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3015 list_del(&ep->list_entry); 3016 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3017 } 3018 } 3019 3020 static void 3021 qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn, 3022 struct qed_iwarp_ep *ep, u8 fw_return_code) 3023 { 3024 u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle; 3025 3026 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 3027 /* Done with the SYN packet, post back to ll2 rx */ 3028 qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle); 3029 3030 ep->syn = NULL; 3031 3032 /* If connect failed - upper layer doesn't know about it */ 3033 if (fw_return_code == RDMA_RETURN_OK) 3034 qed_iwarp_mpa_received(p_hwfn, ep); 3035 else 3036 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep, 3037 fw_return_code); 3038 } else { 3039 if (fw_return_code == RDMA_RETURN_OK) 3040 qed_iwarp_mpa_offload(p_hwfn, ep); 3041 else 3042 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep, 3043 fw_return_code); 3044 } 3045 } 3046 3047 static inline bool 3048 qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 3049 { 3050 if (!ep || (ep->sig != QED_EP_SIG)) { 3051 DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep); 3052 return false; 3053 } 3054 3055 return true; 3056 } 3057 3058 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code, 3059 __le16 echo, union event_ring_data *data, 3060 u8 fw_return_code) 3061 { 3062 struct qed_rdma_events events = p_hwfn->p_rdma_info->events; 3063 struct regpair *fw_handle = &data->rdma_data.async_handle; 3064 struct qed_iwarp_ep *ep = NULL; 3065 u16 srq_offset; 3066 u16 srq_id; 3067 u16 cid; 3068 3069 ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi, 3070 fw_handle->lo); 3071 3072 switch (fw_event_code) { 3073 case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE: 3074 /* Async completion after TCP 3-way handshake */ 3075 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3076 return -EINVAL; 3077 DP_VERBOSE(p_hwfn, 3078 QED_MSG_RDMA, 3079 "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n", 3080 ep->tcp_cid, fw_return_code); 3081 qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code); 3082 break; 3083 case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED: 3084 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3085 return -EINVAL; 3086 DP_VERBOSE(p_hwfn, 3087 QED_MSG_RDMA, 3088 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n", 3089 ep->cid, fw_return_code); 3090 qed_iwarp_exception_received(p_hwfn, ep, fw_return_code); 3091 break; 3092 case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE: 3093 /* Async completion for Close Connection ramrod */ 3094 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3095 return -EINVAL; 3096 DP_VERBOSE(p_hwfn, 3097 QED_MSG_RDMA, 3098 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n", 3099 ep->cid, fw_return_code); 3100 qed_iwarp_qp_in_error(p_hwfn, ep, fw_return_code); 3101 break; 3102 case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED: 3103 /* Async event for active side only */ 3104 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3105 return -EINVAL; 3106 DP_VERBOSE(p_hwfn, 3107 QED_MSG_RDMA, 3108 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n", 3109 ep->cid, fw_return_code); 3110 qed_iwarp_mpa_reply_arrived(p_hwfn, ep); 3111 break; 3112 case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE: 3113 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3114 return -EINVAL; 3115 DP_VERBOSE(p_hwfn, 3116 QED_MSG_RDMA, 3117 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n", 3118 ep->cid, fw_return_code); 3119 qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code); 3120 break; 3121 case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED: 3122 cid = (u16)le32_to_cpu(fw_handle->lo); 3123 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 3124 "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid); 3125 qed_iwarp_cid_cleaned(p_hwfn, cid); 3126 3127 break; 3128 case IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY: 3129 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY\n"); 3130 srq_offset = p_hwfn->p_rdma_info->srq_id_offset; 3131 /* FW assigns value that is no greater than u16 */ 3132 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset; 3133 events.affiliated_event(events.context, 3134 QED_IWARP_EVENT_SRQ_EMPTY, 3135 &srq_id); 3136 break; 3137 case IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT: 3138 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT\n"); 3139 srq_offset = p_hwfn->p_rdma_info->srq_id_offset; 3140 /* FW assigns value that is no greater than u16 */ 3141 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset; 3142 events.affiliated_event(events.context, 3143 QED_IWARP_EVENT_SRQ_LIMIT, 3144 &srq_id); 3145 break; 3146 case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW: 3147 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n"); 3148 3149 p_hwfn->p_rdma_info->events.affiliated_event( 3150 p_hwfn->p_rdma_info->events.context, 3151 QED_IWARP_EVENT_CQ_OVERFLOW, 3152 (void *)fw_handle); 3153 break; 3154 default: 3155 DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n", 3156 fw_event_code); 3157 return -EINVAL; 3158 } 3159 return 0; 3160 } 3161 3162 int 3163 qed_iwarp_create_listen(void *rdma_cxt, 3164 struct qed_iwarp_listen_in *iparams, 3165 struct qed_iwarp_listen_out *oparams) 3166 { 3167 struct qed_hwfn *p_hwfn = rdma_cxt; 3168 struct qed_iwarp_listener *listener; 3169 3170 listener = kzalloc(sizeof(*listener), GFP_KERNEL); 3171 if (!listener) 3172 return -ENOMEM; 3173 3174 listener->ip_version = iparams->ip_version; 3175 memcpy(listener->ip_addr, iparams->ip_addr, sizeof(listener->ip_addr)); 3176 listener->port = iparams->port; 3177 listener->vlan = iparams->vlan; 3178 3179 listener->event_cb = iparams->event_cb; 3180 listener->cb_context = iparams->cb_context; 3181 listener->max_backlog = iparams->max_backlog; 3182 oparams->handle = listener; 3183 3184 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3185 list_add_tail(&listener->list_entry, 3186 &p_hwfn->p_rdma_info->iwarp.listen_list); 3187 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3188 3189 DP_VERBOSE(p_hwfn, 3190 QED_MSG_RDMA, 3191 "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n", 3192 listener->event_cb, 3193 listener, 3194 listener->ip_addr[0], 3195 listener->ip_addr[1], 3196 listener->ip_addr[2], 3197 listener->ip_addr[3], listener->port, listener->vlan); 3198 3199 return 0; 3200 } 3201 3202 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle) 3203 { 3204 struct qed_iwarp_listener *listener = handle; 3205 struct qed_hwfn *p_hwfn = rdma_cxt; 3206 3207 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "handle=%p\n", handle); 3208 3209 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3210 list_del(&listener->list_entry); 3211 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3212 3213 kfree(listener); 3214 3215 return 0; 3216 } 3217 3218 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams) 3219 { 3220 struct qed_hwfn *p_hwfn = rdma_cxt; 3221 struct qed_sp_init_data init_data; 3222 struct qed_spq_entry *p_ent; 3223 struct qed_iwarp_ep *ep; 3224 struct qed_rdma_qp *qp; 3225 int rc; 3226 3227 ep = iparams->ep_context; 3228 if (!ep) { 3229 DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n"); 3230 return -EINVAL; 3231 } 3232 3233 qp = ep->qp; 3234 3235 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n", 3236 qp->icid, ep->tcp_cid); 3237 3238 memset(&init_data, 0, sizeof(init_data)); 3239 init_data.cid = qp->icid; 3240 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 3241 init_data.comp_mode = QED_SPQ_MODE_CB; 3242 3243 rc = qed_sp_init_request(p_hwfn, &p_ent, 3244 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR, 3245 PROTOCOLID_IWARP, &init_data); 3246 3247 if (rc) 3248 return rc; 3249 3250 rc = qed_spq_post(p_hwfn, p_ent, NULL); 3251 3252 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc); 3253 3254 return rc; 3255 } 3256 3257 void 3258 qed_iwarp_query_qp(struct qed_rdma_qp *qp, 3259 struct qed_rdma_query_qp_out_params *out_params) 3260 { 3261 out_params->state = qed_iwarp2roce_state(qp->iwarp_state); 3262 } 3263