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