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