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_del(&ep->list_entry); 939 list_add_tail(&ep->list_entry, 940 &p_hwfn->p_rdma_info->iwarp.ep_free_list); 941 942 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 943 } 944 945 static void 946 qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 947 { 948 struct mpa_v2_hdr *mpa_v2_params; 949 union async_output *async_data; 950 u16 mpa_ird, mpa_ord; 951 u8 mpa_data_size = 0; 952 953 if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) { 954 mpa_v2_params = 955 (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata); 956 mpa_data_size = sizeof(*mpa_v2_params); 957 mpa_ird = ntohs(mpa_v2_params->ird); 958 mpa_ord = ntohs(mpa_v2_params->ord); 959 960 ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK); 961 ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK); 962 } 963 async_data = &ep->ep_buffer_virt->async_output; 964 965 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size; 966 ep->cm_info.private_data_len = async_data->mpa_response.ulp_data_len - 967 mpa_data_size; 968 } 969 970 static void 971 qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 972 { 973 struct qed_iwarp_cm_event_params params; 974 975 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 976 DP_NOTICE(p_hwfn, 977 "MPA reply event not expected on passive side!\n"); 978 return; 979 } 980 981 params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY; 982 983 qed_iwarp_parse_private_data(p_hwfn, ep); 984 985 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 986 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 987 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 988 989 params.cm_info = &ep->cm_info; 990 params.ep_context = ep; 991 params.status = 0; 992 993 ep->mpa_reply_processed = true; 994 995 ep->event_cb(ep->cb_context, ¶ms); 996 } 997 998 #define QED_IWARP_CONNECT_MODE_STRING(ep) \ 999 ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active" 1000 1001 /* Called as a result of the event: 1002 * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE 1003 */ 1004 static void 1005 qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn, 1006 struct qed_iwarp_ep *ep, u8 fw_return_code) 1007 { 1008 struct qed_iwarp_cm_event_params params; 1009 1010 if (ep->connect_mode == TCP_CONNECT_ACTIVE) 1011 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE; 1012 else 1013 params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE; 1014 1015 if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed) 1016 qed_iwarp_parse_private_data(p_hwfn, ep); 1017 1018 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1019 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 1020 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 1021 1022 params.cm_info = &ep->cm_info; 1023 1024 params.ep_context = ep; 1025 1026 ep->state = QED_IWARP_EP_CLOSED; 1027 1028 switch (fw_return_code) { 1029 case RDMA_RETURN_OK: 1030 ep->qp->max_rd_atomic_req = ep->cm_info.ord; 1031 ep->qp->max_rd_atomic_resp = ep->cm_info.ird; 1032 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1); 1033 ep->state = QED_IWARP_EP_ESTABLISHED; 1034 params.status = 0; 1035 break; 1036 case IWARP_CONN_ERROR_MPA_TIMEOUT: 1037 DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n", 1038 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1039 params.status = -EBUSY; 1040 break; 1041 case IWARP_CONN_ERROR_MPA_ERROR_REJECT: 1042 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n", 1043 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1044 params.status = -ECONNREFUSED; 1045 break; 1046 case IWARP_CONN_ERROR_MPA_RST: 1047 DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n", 1048 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid, 1049 ep->tcp_cid); 1050 params.status = -ECONNRESET; 1051 break; 1052 case IWARP_CONN_ERROR_MPA_FIN: 1053 DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n", 1054 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1055 params.status = -ECONNREFUSED; 1056 break; 1057 case IWARP_CONN_ERROR_MPA_INSUF_IRD: 1058 DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n", 1059 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1060 params.status = -ECONNREFUSED; 1061 break; 1062 case IWARP_CONN_ERROR_MPA_RTR_MISMATCH: 1063 DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n", 1064 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1065 params.status = -ECONNREFUSED; 1066 break; 1067 case IWARP_CONN_ERROR_MPA_INVALID_PACKET: 1068 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n", 1069 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1070 params.status = -ECONNREFUSED; 1071 break; 1072 case IWARP_CONN_ERROR_MPA_LOCAL_ERROR: 1073 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n", 1074 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1075 params.status = -ECONNREFUSED; 1076 break; 1077 case IWARP_CONN_ERROR_MPA_TERMINATE: 1078 DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n", 1079 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1080 params.status = -ECONNREFUSED; 1081 break; 1082 default: 1083 params.status = -ECONNRESET; 1084 break; 1085 } 1086 1087 ep->event_cb(ep->cb_context, ¶ms); 1088 1089 /* on passive side, if there is no associated QP (REJECT) we need to 1090 * return the ep to the pool, (in the regular case we add an element 1091 * in accept instead of this one. 1092 * In both cases we need to remove it from the ep_list. 1093 */ 1094 if (fw_return_code != RDMA_RETURN_OK) { 1095 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 1096 if ((ep->connect_mode == TCP_CONNECT_PASSIVE) && 1097 (!ep->qp)) { /* Rejected */ 1098 qed_iwarp_return_ep(p_hwfn, ep); 1099 } else { 1100 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1101 list_del(&ep->list_entry); 1102 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1103 } 1104 } 1105 } 1106 1107 static void 1108 qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn, 1109 struct qed_iwarp_ep *ep, u8 *mpa_data_size) 1110 { 1111 struct mpa_v2_hdr *mpa_v2_params; 1112 u16 mpa_ird, mpa_ord; 1113 1114 *mpa_data_size = 0; 1115 if (MPA_REV2(ep->mpa_rev)) { 1116 mpa_v2_params = 1117 (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata; 1118 *mpa_data_size = sizeof(*mpa_v2_params); 1119 1120 mpa_ird = (u16)ep->cm_info.ird; 1121 mpa_ord = (u16)ep->cm_info.ord; 1122 1123 if (ep->rtr_type != MPA_RTR_TYPE_NONE) { 1124 mpa_ird |= MPA_V2_PEER2PEER_MODEL; 1125 1126 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND) 1127 mpa_ird |= MPA_V2_SEND_RTR; 1128 1129 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE) 1130 mpa_ord |= MPA_V2_WRITE_RTR; 1131 1132 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) 1133 mpa_ord |= MPA_V2_READ_RTR; 1134 } 1135 1136 mpa_v2_params->ird = htons(mpa_ird); 1137 mpa_v2_params->ord = htons(mpa_ord); 1138 1139 DP_VERBOSE(p_hwfn, 1140 QED_MSG_RDMA, 1141 "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n", 1142 mpa_v2_params->ird, 1143 mpa_v2_params->ord, 1144 *((u32 *)mpa_v2_params), 1145 mpa_ord & MPA_V2_IRD_ORD_MASK, 1146 mpa_ird & MPA_V2_IRD_ORD_MASK, 1147 !!(mpa_ird & MPA_V2_PEER2PEER_MODEL), 1148 !!(mpa_ird & MPA_V2_SEND_RTR), 1149 !!(mpa_ord & MPA_V2_WRITE_RTR), 1150 !!(mpa_ord & MPA_V2_READ_RTR)); 1151 } 1152 } 1153 1154 int qed_iwarp_connect(void *rdma_cxt, 1155 struct qed_iwarp_connect_in *iparams, 1156 struct qed_iwarp_connect_out *oparams) 1157 { 1158 struct qed_hwfn *p_hwfn = rdma_cxt; 1159 struct qed_iwarp_info *iwarp_info; 1160 struct qed_iwarp_ep *ep; 1161 u8 mpa_data_size = 0; 1162 u32 cid; 1163 int rc; 1164 1165 if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) || 1166 (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) { 1167 DP_NOTICE(p_hwfn, 1168 "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n", 1169 iparams->qp->icid, iparams->cm_info.ord, 1170 iparams->cm_info.ird); 1171 1172 return -EINVAL; 1173 } 1174 1175 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1176 1177 /* Allocate ep object */ 1178 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 1179 if (rc) 1180 return rc; 1181 1182 rc = qed_iwarp_create_ep(p_hwfn, &ep); 1183 if (rc) 1184 goto err; 1185 1186 ep->tcp_cid = cid; 1187 1188 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1189 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list); 1190 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1191 1192 ep->qp = iparams->qp; 1193 ep->qp->ep = ep; 1194 ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr); 1195 ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr); 1196 memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info)); 1197 1198 ep->cm_info.ord = iparams->cm_info.ord; 1199 ep->cm_info.ird = iparams->cm_info.ird; 1200 1201 ep->rtr_type = iwarp_info->rtr_type; 1202 if (!iwarp_info->peer2peer) 1203 ep->rtr_type = MPA_RTR_TYPE_NONE; 1204 1205 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0)) 1206 ep->cm_info.ord = 1; 1207 1208 ep->mpa_rev = iwarp_info->mpa_rev; 1209 1210 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1211 1212 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1213 ep->cm_info.private_data_len = iparams->cm_info.private_data_len + 1214 mpa_data_size; 1215 1216 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1217 iparams->cm_info.private_data, 1218 iparams->cm_info.private_data_len); 1219 1220 ep->mss = iparams->mss; 1221 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss); 1222 1223 ep->event_cb = iparams->event_cb; 1224 ep->cb_context = iparams->cb_context; 1225 ep->connect_mode = TCP_CONNECT_ACTIVE; 1226 1227 oparams->ep_context = ep; 1228 1229 rc = qed_iwarp_tcp_offload(p_hwfn, ep); 1230 1231 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n", 1232 iparams->qp->icid, ep->tcp_cid, rc); 1233 1234 if (rc) { 1235 qed_iwarp_destroy_ep(p_hwfn, ep, true); 1236 goto err; 1237 } 1238 1239 return rc; 1240 err: 1241 qed_iwarp_cid_cleaned(p_hwfn, cid); 1242 1243 return rc; 1244 } 1245 1246 static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn) 1247 { 1248 struct qed_iwarp_ep *ep = NULL; 1249 int rc; 1250 1251 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1252 1253 if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) { 1254 DP_ERR(p_hwfn, "Ep list is empty\n"); 1255 goto out; 1256 } 1257 1258 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list, 1259 struct qed_iwarp_ep, list_entry); 1260 1261 /* in some cases we could have failed allocating a tcp cid when added 1262 * from accept / failure... retry now..this is not the common case. 1263 */ 1264 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) { 1265 rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid); 1266 1267 /* if we fail we could look for another entry with a valid 1268 * tcp_cid, but since we don't expect to reach this anyway 1269 * it's not worth the handling 1270 */ 1271 if (rc) { 1272 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 1273 ep = NULL; 1274 goto out; 1275 } 1276 } 1277 1278 list_del(&ep->list_entry); 1279 1280 out: 1281 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1282 return ep; 1283 } 1284 1285 #define QED_IWARP_MAX_CID_CLEAN_TIME 100 1286 #define QED_IWARP_MAX_NO_PROGRESS_CNT 5 1287 1288 /* This function waits for all the bits of a bmap to be cleared, as long as 1289 * there is progress ( i.e. the number of bits left to be cleared decreases ) 1290 * the function continues. 1291 */ 1292 static int 1293 qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap) 1294 { 1295 int prev_weight = 0; 1296 int wait_count = 0; 1297 int weight = 0; 1298 1299 weight = bitmap_weight(bmap->bitmap, bmap->max_count); 1300 prev_weight = weight; 1301 1302 while (weight) { 1303 msleep(QED_IWARP_MAX_CID_CLEAN_TIME); 1304 1305 weight = bitmap_weight(bmap->bitmap, bmap->max_count); 1306 1307 if (prev_weight == weight) { 1308 wait_count++; 1309 } else { 1310 prev_weight = weight; 1311 wait_count = 0; 1312 } 1313 1314 if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) { 1315 DP_NOTICE(p_hwfn, 1316 "%s bitmap wait timed out (%d cids pending)\n", 1317 bmap->name, weight); 1318 return -EBUSY; 1319 } 1320 } 1321 return 0; 1322 } 1323 1324 static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn) 1325 { 1326 int rc; 1327 int i; 1328 1329 rc = qed_iwarp_wait_cid_map_cleared(p_hwfn, 1330 &p_hwfn->p_rdma_info->tcp_cid_map); 1331 if (rc) 1332 return rc; 1333 1334 /* Now free the tcp cids from the main cid map */ 1335 for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++) 1336 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i); 1337 1338 /* Now wait for all cids to be completed */ 1339 return qed_iwarp_wait_cid_map_cleared(p_hwfn, 1340 &p_hwfn->p_rdma_info->cid_map); 1341 } 1342 1343 static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn) 1344 { 1345 struct qed_iwarp_ep *ep; 1346 1347 while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) { 1348 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1349 1350 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list, 1351 struct qed_iwarp_ep, list_entry); 1352 1353 if (!ep) { 1354 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1355 break; 1356 } 1357 list_del(&ep->list_entry); 1358 1359 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1360 1361 if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID) 1362 qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid); 1363 1364 qed_iwarp_destroy_ep(p_hwfn, ep, false); 1365 } 1366 } 1367 1368 static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init) 1369 { 1370 struct qed_iwarp_ep *ep; 1371 int rc = 0; 1372 int count; 1373 u32 cid; 1374 int i; 1375 1376 count = init ? QED_IWARP_PREALLOC_CNT : 1; 1377 for (i = 0; i < count; i++) { 1378 rc = qed_iwarp_create_ep(p_hwfn, &ep); 1379 if (rc) 1380 return rc; 1381 1382 /* During initialization we allocate from the main pool, 1383 * afterwards we allocate only from the tcp_cid. 1384 */ 1385 if (init) { 1386 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 1387 if (rc) 1388 goto err; 1389 qed_iwarp_set_tcp_cid(p_hwfn, cid); 1390 } else { 1391 /* We don't care about the return code, it's ok if 1392 * tcp_cid remains invalid...in this case we'll 1393 * defer allocation 1394 */ 1395 qed_iwarp_alloc_tcp_cid(p_hwfn, &cid); 1396 } 1397 1398 ep->tcp_cid = cid; 1399 1400 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1401 list_add_tail(&ep->list_entry, 1402 &p_hwfn->p_rdma_info->iwarp.ep_free_list); 1403 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1404 } 1405 1406 return rc; 1407 1408 err: 1409 qed_iwarp_destroy_ep(p_hwfn, ep, false); 1410 1411 return rc; 1412 } 1413 1414 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn) 1415 { 1416 int rc; 1417 1418 /* Allocate bitmap for tcp cid. These are used by passive side 1419 * to ensure it can allocate a tcp cid during dpc that was 1420 * pre-acquired and doesn't require dynamic allocation of ilt 1421 */ 1422 rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1423 QED_IWARP_PREALLOC_CNT, "TCP_CID"); 1424 if (rc) { 1425 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1426 "Failed to allocate tcp cid, rc = %d\n", rc); 1427 return rc; 1428 } 1429 1430 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list); 1431 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1432 1433 rc = qed_iwarp_prealloc_ep(p_hwfn, true); 1434 if (rc) 1435 return rc; 1436 1437 return qed_ooo_alloc(p_hwfn); 1438 } 1439 1440 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn) 1441 { 1442 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1443 1444 qed_ooo_free(p_hwfn); 1445 qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1); 1446 kfree(iwarp_info->mpa_bufs); 1447 kfree(iwarp_info->partial_fpdus); 1448 kfree(iwarp_info->mpa_intermediate_buf); 1449 } 1450 1451 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams) 1452 { 1453 struct qed_hwfn *p_hwfn = rdma_cxt; 1454 struct qed_iwarp_ep *ep; 1455 u8 mpa_data_size = 0; 1456 int rc; 1457 1458 ep = iparams->ep_context; 1459 if (!ep) { 1460 DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n"); 1461 return -EINVAL; 1462 } 1463 1464 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n", 1465 iparams->qp->icid, ep->tcp_cid); 1466 1467 if ((iparams->ord > QED_IWARP_ORD_DEFAULT) || 1468 (iparams->ird > QED_IWARP_IRD_DEFAULT)) { 1469 DP_VERBOSE(p_hwfn, 1470 QED_MSG_RDMA, 1471 "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n", 1472 iparams->qp->icid, 1473 ep->tcp_cid, iparams->ord, iparams->ord); 1474 return -EINVAL; 1475 } 1476 1477 qed_iwarp_prealloc_ep(p_hwfn, false); 1478 1479 ep->cb_context = iparams->cb_context; 1480 ep->qp = iparams->qp; 1481 ep->qp->ep = ep; 1482 1483 if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) { 1484 /* Negotiate ord/ird: if upperlayer requested ord larger than 1485 * ird advertised by remote, we need to decrease our ord 1486 */ 1487 if (iparams->ord > ep->cm_info.ird) 1488 iparams->ord = ep->cm_info.ird; 1489 1490 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && 1491 (iparams->ird == 0)) 1492 iparams->ird = 1; 1493 } 1494 1495 /* Update cm_info ord/ird to be negotiated values */ 1496 ep->cm_info.ord = iparams->ord; 1497 ep->cm_info.ird = iparams->ird; 1498 1499 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1500 1501 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1502 ep->cm_info.private_data_len = iparams->private_data_len + 1503 mpa_data_size; 1504 1505 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1506 iparams->private_data, iparams->private_data_len); 1507 1508 rc = qed_iwarp_mpa_offload(p_hwfn, ep); 1509 if (rc) 1510 qed_iwarp_modify_qp(p_hwfn, 1511 iparams->qp, QED_IWARP_QP_STATE_ERROR, 1); 1512 1513 return rc; 1514 } 1515 1516 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams) 1517 { 1518 struct qed_hwfn *p_hwfn = rdma_cxt; 1519 struct qed_iwarp_ep *ep; 1520 u8 mpa_data_size = 0; 1521 1522 ep = iparams->ep_context; 1523 if (!ep) { 1524 DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n"); 1525 return -EINVAL; 1526 } 1527 1528 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid); 1529 1530 ep->cb_context = iparams->cb_context; 1531 ep->qp = NULL; 1532 1533 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1534 1535 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1536 ep->cm_info.private_data_len = iparams->private_data_len + 1537 mpa_data_size; 1538 1539 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1540 iparams->private_data, iparams->private_data_len); 1541 1542 return qed_iwarp_mpa_offload(p_hwfn, ep); 1543 } 1544 1545 static void 1546 qed_iwarp_print_cm_info(struct qed_hwfn *p_hwfn, 1547 struct qed_iwarp_cm_info *cm_info) 1548 { 1549 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "ip_version = %d\n", 1550 cm_info->ip_version); 1551 1552 if (cm_info->ip_version == QED_TCP_IPV4) 1553 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1554 "remote_ip %pI4h:%x, local_ip %pI4h:%x vlan=%x\n", 1555 cm_info->remote_ip, cm_info->remote_port, 1556 cm_info->local_ip, cm_info->local_port, 1557 cm_info->vlan); 1558 else 1559 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1560 "remote_ip %pI6:%x, local_ip %pI6:%x vlan=%x\n", 1561 cm_info->remote_ip, cm_info->remote_port, 1562 cm_info->local_ip, cm_info->local_port, 1563 cm_info->vlan); 1564 1565 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1566 "private_data_len = %x ord = %d, ird = %d\n", 1567 cm_info->private_data_len, cm_info->ord, cm_info->ird); 1568 } 1569 1570 static int 1571 qed_iwarp_ll2_post_rx(struct qed_hwfn *p_hwfn, 1572 struct qed_iwarp_ll2_buff *buf, u8 handle) 1573 { 1574 int rc; 1575 1576 rc = qed_ll2_post_rx_buffer(p_hwfn, handle, buf->data_phys_addr, 1577 (u16)buf->buff_size, buf, 1); 1578 if (rc) { 1579 DP_NOTICE(p_hwfn, 1580 "Failed to repost rx buffer to ll2 rc = %d, handle=%d\n", 1581 rc, handle); 1582 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buf->buff_size, 1583 buf->data, buf->data_phys_addr); 1584 kfree(buf); 1585 } 1586 1587 return rc; 1588 } 1589 1590 static bool 1591 qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info) 1592 { 1593 struct qed_iwarp_ep *ep = NULL; 1594 bool found = false; 1595 1596 list_for_each_entry(ep, 1597 &p_hwfn->p_rdma_info->iwarp.ep_list, 1598 list_entry) { 1599 if ((ep->cm_info.local_port == cm_info->local_port) && 1600 (ep->cm_info.remote_port == cm_info->remote_port) && 1601 (ep->cm_info.vlan == cm_info->vlan) && 1602 !memcmp(&ep->cm_info.local_ip, cm_info->local_ip, 1603 sizeof(cm_info->local_ip)) && 1604 !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip, 1605 sizeof(cm_info->remote_ip))) { 1606 found = true; 1607 break; 1608 } 1609 } 1610 1611 if (found) { 1612 DP_NOTICE(p_hwfn, 1613 "SYN received on active connection - dropping\n"); 1614 qed_iwarp_print_cm_info(p_hwfn, cm_info); 1615 1616 return true; 1617 } 1618 1619 return false; 1620 } 1621 1622 static struct qed_iwarp_listener * 1623 qed_iwarp_get_listener(struct qed_hwfn *p_hwfn, 1624 struct qed_iwarp_cm_info *cm_info) 1625 { 1626 struct qed_iwarp_listener *listener = NULL; 1627 static const u32 ip_zero[4] = { 0, 0, 0, 0 }; 1628 bool found = false; 1629 1630 qed_iwarp_print_cm_info(p_hwfn, cm_info); 1631 1632 list_for_each_entry(listener, 1633 &p_hwfn->p_rdma_info->iwarp.listen_list, 1634 list_entry) { 1635 if (listener->port == cm_info->local_port) { 1636 if (!memcmp(listener->ip_addr, 1637 ip_zero, sizeof(ip_zero))) { 1638 found = true; 1639 break; 1640 } 1641 1642 if (!memcmp(listener->ip_addr, 1643 cm_info->local_ip, 1644 sizeof(cm_info->local_ip)) && 1645 (listener->vlan == cm_info->vlan)) { 1646 found = true; 1647 break; 1648 } 1649 } 1650 } 1651 1652 if (found) { 1653 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener found = %p\n", 1654 listener); 1655 return listener; 1656 } 1657 1658 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener not found\n"); 1659 return NULL; 1660 } 1661 1662 static int 1663 qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn, 1664 struct qed_iwarp_cm_info *cm_info, 1665 void *buf, 1666 u8 *remote_mac_addr, 1667 u8 *local_mac_addr, 1668 int *payload_len, int *tcp_start_offset) 1669 { 1670 struct vlan_ethhdr *vethh; 1671 bool vlan_valid = false; 1672 struct ipv6hdr *ip6h; 1673 struct ethhdr *ethh; 1674 struct tcphdr *tcph; 1675 struct iphdr *iph; 1676 int eth_hlen; 1677 int ip_hlen; 1678 int eth_type; 1679 int i; 1680 1681 ethh = buf; 1682 eth_type = ntohs(ethh->h_proto); 1683 if (eth_type == ETH_P_8021Q) { 1684 vlan_valid = true; 1685 vethh = (struct vlan_ethhdr *)ethh; 1686 cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK; 1687 eth_type = ntohs(vethh->h_vlan_encapsulated_proto); 1688 } 1689 1690 eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0); 1691 1692 ether_addr_copy(remote_mac_addr, ethh->h_source); 1693 ether_addr_copy(local_mac_addr, ethh->h_dest); 1694 1695 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n", 1696 eth_type, ethh->h_source); 1697 1698 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_hlen=%d destination mac: %pM\n", 1699 eth_hlen, ethh->h_dest); 1700 1701 iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen); 1702 1703 if (eth_type == ETH_P_IP) { 1704 if (iph->protocol != IPPROTO_TCP) { 1705 DP_NOTICE(p_hwfn, 1706 "Unexpected ip protocol on ll2 %x\n", 1707 iph->protocol); 1708 return -EINVAL; 1709 } 1710 1711 cm_info->local_ip[0] = ntohl(iph->daddr); 1712 cm_info->remote_ip[0] = ntohl(iph->saddr); 1713 cm_info->ip_version = TCP_IPV4; 1714 1715 ip_hlen = (iph->ihl) * sizeof(u32); 1716 *payload_len = ntohs(iph->tot_len) - ip_hlen; 1717 } else if (eth_type == ETH_P_IPV6) { 1718 ip6h = (struct ipv6hdr *)iph; 1719 1720 if (ip6h->nexthdr != IPPROTO_TCP) { 1721 DP_NOTICE(p_hwfn, 1722 "Unexpected ip protocol on ll2 %x\n", 1723 iph->protocol); 1724 return -EINVAL; 1725 } 1726 1727 for (i = 0; i < 4; i++) { 1728 cm_info->local_ip[i] = 1729 ntohl(ip6h->daddr.in6_u.u6_addr32[i]); 1730 cm_info->remote_ip[i] = 1731 ntohl(ip6h->saddr.in6_u.u6_addr32[i]); 1732 } 1733 cm_info->ip_version = TCP_IPV6; 1734 1735 ip_hlen = sizeof(*ip6h); 1736 *payload_len = ntohs(ip6h->payload_len); 1737 } else { 1738 DP_NOTICE(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type); 1739 return -EINVAL; 1740 } 1741 1742 tcph = (struct tcphdr *)((u8 *)iph + ip_hlen); 1743 1744 if (!tcph->syn) { 1745 DP_NOTICE(p_hwfn, 1746 "Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n", 1747 iph->ihl, tcph->source, tcph->dest); 1748 return -EINVAL; 1749 } 1750 1751 cm_info->local_port = ntohs(tcph->dest); 1752 cm_info->remote_port = ntohs(tcph->source); 1753 1754 qed_iwarp_print_cm_info(p_hwfn, cm_info); 1755 1756 *tcp_start_offset = eth_hlen + ip_hlen; 1757 1758 return 0; 1759 } 1760 1761 static struct qed_iwarp_fpdu *qed_iwarp_get_curr_fpdu(struct qed_hwfn *p_hwfn, 1762 u16 cid) 1763 { 1764 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1765 struct qed_iwarp_fpdu *partial_fpdu; 1766 u32 idx; 1767 1768 idx = cid - qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP); 1769 if (idx >= iwarp_info->max_num_partial_fpdus) { 1770 DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid, 1771 iwarp_info->max_num_partial_fpdus); 1772 return NULL; 1773 } 1774 1775 partial_fpdu = &iwarp_info->partial_fpdus[idx]; 1776 1777 return partial_fpdu; 1778 } 1779 1780 enum qed_iwarp_mpa_pkt_type { 1781 QED_IWARP_MPA_PKT_PACKED, 1782 QED_IWARP_MPA_PKT_PARTIAL, 1783 QED_IWARP_MPA_PKT_UNALIGNED 1784 }; 1785 1786 #define QED_IWARP_INVALID_FPDU_LENGTH 0xffff 1787 #define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2) 1788 #define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4) 1789 1790 /* Pad to multiple of 4 */ 1791 #define QED_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) ALIGN(data_len, 4) 1792 #define QED_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \ 1793 (QED_IWARP_PDU_DATA_LEN_WITH_PAD((_mpa_len) + \ 1794 QED_IWARP_MPA_FPDU_LENGTH_SIZE) + \ 1795 QED_IWARP_MPA_CRC32_DIGEST_SIZE) 1796 1797 /* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */ 1798 #define QED_IWARP_MAX_BDS_PER_FPDU 3 1799 1800 static const char * const pkt_type_str[] = { 1801 "QED_IWARP_MPA_PKT_PACKED", 1802 "QED_IWARP_MPA_PKT_PARTIAL", 1803 "QED_IWARP_MPA_PKT_UNALIGNED" 1804 }; 1805 1806 static int 1807 qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn, 1808 struct qed_iwarp_fpdu *fpdu, 1809 struct qed_iwarp_ll2_buff *buf); 1810 1811 static enum qed_iwarp_mpa_pkt_type 1812 qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn, 1813 struct qed_iwarp_fpdu *fpdu, 1814 u16 tcp_payload_len, u8 *mpa_data) 1815 { 1816 enum qed_iwarp_mpa_pkt_type pkt_type; 1817 u16 mpa_len; 1818 1819 if (fpdu->incomplete_bytes) { 1820 pkt_type = QED_IWARP_MPA_PKT_UNALIGNED; 1821 goto out; 1822 } 1823 1824 /* special case of one byte remaining... 1825 * lower byte will be read next packet 1826 */ 1827 if (tcp_payload_len == 1) { 1828 fpdu->fpdu_length = *mpa_data << BITS_PER_BYTE; 1829 pkt_type = QED_IWARP_MPA_PKT_PARTIAL; 1830 goto out; 1831 } 1832 1833 mpa_len = ntohs(*((u16 *)(mpa_data))); 1834 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); 1835 1836 if (fpdu->fpdu_length <= tcp_payload_len) 1837 pkt_type = QED_IWARP_MPA_PKT_PACKED; 1838 else 1839 pkt_type = QED_IWARP_MPA_PKT_PARTIAL; 1840 1841 out: 1842 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1843 "MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n", 1844 pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len); 1845 1846 return pkt_type; 1847 } 1848 1849 static void 1850 qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf, 1851 struct qed_iwarp_fpdu *fpdu, 1852 struct unaligned_opaque_data *pkt_data, 1853 u16 tcp_payload_size, u8 placement_offset) 1854 { 1855 fpdu->mpa_buf = buf; 1856 fpdu->pkt_hdr = buf->data_phys_addr + placement_offset; 1857 fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset; 1858 fpdu->mpa_frag = buf->data_phys_addr + pkt_data->first_mpa_offset; 1859 fpdu->mpa_frag_virt = (u8 *)(buf->data) + pkt_data->first_mpa_offset; 1860 1861 if (tcp_payload_size == 1) 1862 fpdu->incomplete_bytes = QED_IWARP_INVALID_FPDU_LENGTH; 1863 else if (tcp_payload_size < fpdu->fpdu_length) 1864 fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size; 1865 else 1866 fpdu->incomplete_bytes = 0; /* complete fpdu */ 1867 1868 fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes; 1869 } 1870 1871 static int 1872 qed_iwarp_cp_pkt(struct qed_hwfn *p_hwfn, 1873 struct qed_iwarp_fpdu *fpdu, 1874 struct unaligned_opaque_data *pkt_data, 1875 struct qed_iwarp_ll2_buff *buf, u16 tcp_payload_size) 1876 { 1877 u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf; 1878 int rc; 1879 1880 /* need to copy the data from the partial packet stored in fpdu 1881 * to the new buf, for this we also need to move the data currently 1882 * placed on the buf. The assumption is that the buffer is big enough 1883 * since fpdu_length <= mss, we use an intermediate buffer since 1884 * we may need to copy the new data to an overlapping location 1885 */ 1886 if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) { 1887 DP_ERR(p_hwfn, 1888 "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", 1889 buf->buff_size, fpdu->mpa_frag_len, 1890 tcp_payload_size, fpdu->incomplete_bytes); 1891 return -EINVAL; 1892 } 1893 1894 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1895 "MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n", 1896 fpdu->mpa_frag_virt, fpdu->mpa_frag_len, 1897 (u8 *)(buf->data) + pkt_data->first_mpa_offset, 1898 tcp_payload_size); 1899 1900 memcpy(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len); 1901 memcpy(tmp_buf + fpdu->mpa_frag_len, 1902 (u8 *)(buf->data) + pkt_data->first_mpa_offset, 1903 tcp_payload_size); 1904 1905 rc = qed_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf); 1906 if (rc) 1907 return rc; 1908 1909 /* If we managed to post the buffer copy the data to the new buffer 1910 * o/w this will occur in the next round... 1911 */ 1912 memcpy((u8 *)(buf->data), tmp_buf, 1913 fpdu->mpa_frag_len + tcp_payload_size); 1914 1915 fpdu->mpa_buf = buf; 1916 /* fpdu->pkt_hdr remains as is */ 1917 /* fpdu->mpa_frag is overridden with new buf */ 1918 fpdu->mpa_frag = buf->data_phys_addr; 1919 fpdu->mpa_frag_virt = buf->data; 1920 fpdu->mpa_frag_len += tcp_payload_size; 1921 1922 fpdu->incomplete_bytes -= tcp_payload_size; 1923 1924 DP_VERBOSE(p_hwfn, 1925 QED_MSG_RDMA, 1926 "MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n", 1927 buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size, 1928 fpdu->incomplete_bytes); 1929 1930 return 0; 1931 } 1932 1933 static void 1934 qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn, 1935 struct qed_iwarp_fpdu *fpdu, u8 *mpa_data) 1936 { 1937 u16 mpa_len; 1938 1939 /* Update incomplete packets if needed */ 1940 if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) { 1941 /* Missing lower byte is now available */ 1942 mpa_len = fpdu->fpdu_length | *mpa_data; 1943 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); 1944 /* one byte of hdr */ 1945 fpdu->mpa_frag_len = 1; 1946 fpdu->incomplete_bytes = fpdu->fpdu_length - 1; 1947 DP_VERBOSE(p_hwfn, 1948 QED_MSG_RDMA, 1949 "MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n", 1950 mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes); 1951 } 1952 } 1953 1954 #define QED_IWARP_IS_RIGHT_EDGE(_curr_pkt) \ 1955 (GET_FIELD((_curr_pkt)->flags, \ 1956 UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE)) 1957 1958 /* This function is used to recycle a buffer using the ll2 drop option. It 1959 * uses the mechanism to ensure that all buffers posted to tx before this one 1960 * were completed. The buffer sent here will be sent as a cookie in the tx 1961 * completion function and can then be reposted to rx chain when done. The flow 1962 * that requires this is the flow where a FPDU splits over more than 3 tcp 1963 * segments. In this case the driver needs to re-post a rx buffer instead of 1964 * the one received, but driver can't simply repost a buffer it copied from 1965 * as there is a case where the buffer was originally a packed FPDU, and is 1966 * partially posted to FW. Driver needs to ensure FW is done with it. 1967 */ 1968 static int 1969 qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn, 1970 struct qed_iwarp_fpdu *fpdu, 1971 struct qed_iwarp_ll2_buff *buf) 1972 { 1973 struct qed_ll2_tx_pkt_info tx_pkt; 1974 u8 ll2_handle; 1975 int rc; 1976 1977 memset(&tx_pkt, 0, sizeof(tx_pkt)); 1978 tx_pkt.num_of_bds = 1; 1979 tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP; 1980 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; 1981 tx_pkt.first_frag = fpdu->pkt_hdr; 1982 tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 1983 buf->piggy_buf = NULL; 1984 tx_pkt.cookie = buf; 1985 1986 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 1987 1988 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 1989 if (rc) 1990 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1991 "Can't drop packet rc=%d\n", rc); 1992 1993 DP_VERBOSE(p_hwfn, 1994 QED_MSG_RDMA, 1995 "MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n", 1996 (unsigned long int)tx_pkt.first_frag, 1997 tx_pkt.first_frag_len, buf, rc); 1998 1999 return rc; 2000 } 2001 2002 static int 2003 qed_iwarp_win_right_edge(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu) 2004 { 2005 struct qed_ll2_tx_pkt_info tx_pkt; 2006 u8 ll2_handle; 2007 int rc; 2008 2009 memset(&tx_pkt, 0, sizeof(tx_pkt)); 2010 tx_pkt.num_of_bds = 1; 2011 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 2012 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; 2013 2014 tx_pkt.first_frag = fpdu->pkt_hdr; 2015 tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 2016 tx_pkt.enable_ip_cksum = true; 2017 tx_pkt.enable_l4_cksum = true; 2018 tx_pkt.calc_ip_len = true; 2019 /* vlan overload with enum iwarp_ll2_tx_queues */ 2020 tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE; 2021 2022 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 2023 2024 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 2025 if (rc) 2026 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2027 "Can't send right edge rc=%d\n", rc); 2028 DP_VERBOSE(p_hwfn, 2029 QED_MSG_RDMA, 2030 "MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n", 2031 tx_pkt.num_of_bds, 2032 (unsigned long int)tx_pkt.first_frag, 2033 tx_pkt.first_frag_len, rc); 2034 2035 return rc; 2036 } 2037 2038 static int 2039 qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn, 2040 struct qed_iwarp_fpdu *fpdu, 2041 struct unaligned_opaque_data *curr_pkt, 2042 struct qed_iwarp_ll2_buff *buf, 2043 u16 tcp_payload_size, enum qed_iwarp_mpa_pkt_type pkt_type) 2044 { 2045 struct qed_ll2_tx_pkt_info tx_pkt; 2046 u8 ll2_handle; 2047 int rc; 2048 2049 memset(&tx_pkt, 0, sizeof(tx_pkt)); 2050 2051 /* An unaligned packet means it's split over two tcp segments. So the 2052 * complete packet requires 3 bds, one for the header, one for the 2053 * part of the fpdu of the first tcp segment, and the last fragment 2054 * will point to the remainder of the fpdu. A packed pdu, requires only 2055 * two bds, one for the header and one for the data. 2056 */ 2057 tx_pkt.num_of_bds = (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2; 2058 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 2059 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; /* offset in words */ 2060 2061 /* Send the mpa_buf only with the last fpdu (in case of packed) */ 2062 if (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED || 2063 tcp_payload_size <= fpdu->fpdu_length) 2064 tx_pkt.cookie = fpdu->mpa_buf; 2065 2066 tx_pkt.first_frag = fpdu->pkt_hdr; 2067 tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 2068 tx_pkt.enable_ip_cksum = true; 2069 tx_pkt.enable_l4_cksum = true; 2070 tx_pkt.calc_ip_len = true; 2071 /* vlan overload with enum iwarp_ll2_tx_queues */ 2072 tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE; 2073 2074 /* special case of unaligned packet and not packed, need to send 2075 * both buffers as cookie to release. 2076 */ 2077 if (tcp_payload_size == fpdu->incomplete_bytes) 2078 fpdu->mpa_buf->piggy_buf = buf; 2079 2080 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 2081 2082 /* Set first fragment to header */ 2083 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 2084 if (rc) 2085 goto out; 2086 2087 /* Set second fragment to first part of packet */ 2088 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle, 2089 fpdu->mpa_frag, 2090 fpdu->mpa_frag_len); 2091 if (rc) 2092 goto out; 2093 2094 if (!fpdu->incomplete_bytes) 2095 goto out; 2096 2097 /* Set third fragment to second part of the packet */ 2098 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, 2099 ll2_handle, 2100 buf->data_phys_addr + 2101 curr_pkt->first_mpa_offset, 2102 fpdu->incomplete_bytes); 2103 out: 2104 DP_VERBOSE(p_hwfn, 2105 QED_MSG_RDMA, 2106 "MPA_ALIGN: Sent FPDU num_bds=%d first_frag_len=%x, mpa_frag_len=0x%x, incomplete_bytes:0x%x rc=%d\n", 2107 tx_pkt.num_of_bds, 2108 tx_pkt.first_frag_len, 2109 fpdu->mpa_frag_len, 2110 fpdu->incomplete_bytes, rc); 2111 2112 return rc; 2113 } 2114 2115 static void 2116 qed_iwarp_mpa_get_data(struct qed_hwfn *p_hwfn, 2117 struct unaligned_opaque_data *curr_pkt, 2118 u32 opaque_data0, u32 opaque_data1) 2119 { 2120 u64 opaque_data; 2121 2122 opaque_data = HILO_64(opaque_data1, opaque_data0); 2123 *curr_pkt = *((struct unaligned_opaque_data *)&opaque_data); 2124 2125 curr_pkt->first_mpa_offset = curr_pkt->tcp_payload_offset + 2126 le16_to_cpu(curr_pkt->first_mpa_offset); 2127 curr_pkt->cid = le32_to_cpu(curr_pkt->cid); 2128 } 2129 2130 /* This function is called when an unaligned or incomplete MPA packet arrives 2131 * driver needs to align the packet, perhaps using previous data and send 2132 * it down to FW once it is aligned. 2133 */ 2134 static int 2135 qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn, 2136 struct qed_iwarp_ll2_mpa_buf *mpa_buf) 2137 { 2138 struct unaligned_opaque_data *curr_pkt = &mpa_buf->data; 2139 struct qed_iwarp_ll2_buff *buf = mpa_buf->ll2_buf; 2140 enum qed_iwarp_mpa_pkt_type pkt_type; 2141 struct qed_iwarp_fpdu *fpdu; 2142 int rc = -EINVAL; 2143 u8 *mpa_data; 2144 2145 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, curr_pkt->cid & 0xffff); 2146 if (!fpdu) { /* something corrupt with cid, post rx back */ 2147 DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n", 2148 curr_pkt->cid); 2149 goto err; 2150 } 2151 2152 do { 2153 mpa_data = ((u8 *)(buf->data) + curr_pkt->first_mpa_offset); 2154 2155 pkt_type = qed_iwarp_mpa_classify(p_hwfn, fpdu, 2156 mpa_buf->tcp_payload_len, 2157 mpa_data); 2158 2159 switch (pkt_type) { 2160 case QED_IWARP_MPA_PKT_PARTIAL: 2161 qed_iwarp_init_fpdu(buf, fpdu, 2162 curr_pkt, 2163 mpa_buf->tcp_payload_len, 2164 mpa_buf->placement_offset); 2165 2166 if (!QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) { 2167 mpa_buf->tcp_payload_len = 0; 2168 break; 2169 } 2170 2171 rc = qed_iwarp_win_right_edge(p_hwfn, fpdu); 2172 2173 if (rc) { 2174 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2175 "Can't send FPDU:reset rc=%d\n", rc); 2176 memset(fpdu, 0, sizeof(*fpdu)); 2177 break; 2178 } 2179 2180 mpa_buf->tcp_payload_len = 0; 2181 break; 2182 case QED_IWARP_MPA_PKT_PACKED: 2183 qed_iwarp_init_fpdu(buf, fpdu, 2184 curr_pkt, 2185 mpa_buf->tcp_payload_len, 2186 mpa_buf->placement_offset); 2187 2188 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, 2189 mpa_buf->tcp_payload_len, 2190 pkt_type); 2191 if (rc) { 2192 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2193 "Can't send FPDU:reset rc=%d\n", rc); 2194 memset(fpdu, 0, sizeof(*fpdu)); 2195 break; 2196 } 2197 2198 mpa_buf->tcp_payload_len -= fpdu->fpdu_length; 2199 curr_pkt->first_mpa_offset += fpdu->fpdu_length; 2200 break; 2201 case QED_IWARP_MPA_PKT_UNALIGNED: 2202 qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data); 2203 if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) { 2204 /* special handling of fpdu split over more 2205 * than 2 segments 2206 */ 2207 if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) { 2208 rc = qed_iwarp_win_right_edge(p_hwfn, 2209 fpdu); 2210 /* packet will be re-processed later */ 2211 if (rc) 2212 return rc; 2213 } 2214 2215 rc = qed_iwarp_cp_pkt(p_hwfn, fpdu, curr_pkt, 2216 buf, 2217 mpa_buf->tcp_payload_len); 2218 if (rc) /* packet will be re-processed later */ 2219 return rc; 2220 2221 mpa_buf->tcp_payload_len = 0; 2222 break; 2223 } 2224 2225 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, 2226 mpa_buf->tcp_payload_len, 2227 pkt_type); 2228 if (rc) { 2229 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2230 "Can't send FPDU:delay rc=%d\n", rc); 2231 /* don't reset fpdu -> we need it for next 2232 * classify 2233 */ 2234 break; 2235 } 2236 2237 mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes; 2238 curr_pkt->first_mpa_offset += fpdu->incomplete_bytes; 2239 /* The framed PDU was sent - no more incomplete bytes */ 2240 fpdu->incomplete_bytes = 0; 2241 break; 2242 } 2243 } while (mpa_buf->tcp_payload_len && !rc); 2244 2245 return rc; 2246 2247 err: 2248 qed_iwarp_ll2_post_rx(p_hwfn, 2249 buf, 2250 p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle); 2251 return rc; 2252 } 2253 2254 static void qed_iwarp_process_pending_pkts(struct qed_hwfn *p_hwfn) 2255 { 2256 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2257 struct qed_iwarp_ll2_mpa_buf *mpa_buf = NULL; 2258 int rc; 2259 2260 while (!list_empty(&iwarp_info->mpa_buf_pending_list)) { 2261 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_pending_list, 2262 struct qed_iwarp_ll2_mpa_buf, 2263 list_entry); 2264 2265 rc = qed_iwarp_process_mpa_pkt(p_hwfn, mpa_buf); 2266 2267 /* busy means break and continue processing later, don't 2268 * remove the buf from the pending list. 2269 */ 2270 if (rc == -EBUSY) 2271 break; 2272 2273 list_del(&mpa_buf->list_entry); 2274 list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_list); 2275 2276 if (rc) { /* different error, don't continue */ 2277 DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc); 2278 break; 2279 } 2280 } 2281 } 2282 2283 static void 2284 qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) 2285 { 2286 struct qed_iwarp_ll2_mpa_buf *mpa_buf; 2287 struct qed_iwarp_info *iwarp_info; 2288 struct qed_hwfn *p_hwfn = cxt; 2289 2290 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2291 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_list, 2292 struct qed_iwarp_ll2_mpa_buf, list_entry); 2293 if (!mpa_buf) { 2294 DP_ERR(p_hwfn, "No free mpa buf\n"); 2295 goto err; 2296 } 2297 2298 list_del(&mpa_buf->list_entry); 2299 qed_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data, 2300 data->opaque_data_0, data->opaque_data_1); 2301 2302 DP_VERBOSE(p_hwfn, 2303 QED_MSG_RDMA, 2304 "LL2 MPA CompRx payload_len:0x%x\tfirst_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n", 2305 data->length.packet_length, mpa_buf->data.first_mpa_offset, 2306 mpa_buf->data.tcp_payload_offset, mpa_buf->data.flags, 2307 mpa_buf->data.cid); 2308 2309 mpa_buf->ll2_buf = data->cookie; 2310 mpa_buf->tcp_payload_len = data->length.packet_length - 2311 mpa_buf->data.first_mpa_offset; 2312 mpa_buf->data.first_mpa_offset += data->u.placement_offset; 2313 mpa_buf->placement_offset = data->u.placement_offset; 2314 2315 list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_pending_list); 2316 2317 qed_iwarp_process_pending_pkts(p_hwfn); 2318 return; 2319 err: 2320 qed_iwarp_ll2_post_rx(p_hwfn, data->cookie, 2321 iwarp_info->ll2_mpa_handle); 2322 } 2323 2324 static void 2325 qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) 2326 { 2327 struct qed_iwarp_ll2_buff *buf = data->cookie; 2328 struct qed_iwarp_listener *listener; 2329 struct qed_ll2_tx_pkt_info tx_pkt; 2330 struct qed_iwarp_cm_info cm_info; 2331 struct qed_hwfn *p_hwfn = cxt; 2332 u8 remote_mac_addr[ETH_ALEN]; 2333 u8 local_mac_addr[ETH_ALEN]; 2334 struct qed_iwarp_ep *ep; 2335 int tcp_start_offset; 2336 u8 ll2_syn_handle; 2337 int payload_len; 2338 u32 hdr_size; 2339 int rc; 2340 2341 memset(&cm_info, 0, sizeof(cm_info)); 2342 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle; 2343 2344 /* Check if packet was received with errors... */ 2345 if (data->err_flags) { 2346 DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n", 2347 data->err_flags); 2348 goto err; 2349 } 2350 2351 if (GET_FIELD(data->parse_flags, 2352 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) && 2353 GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) { 2354 DP_NOTICE(p_hwfn, "Syn packet received with checksum error\n"); 2355 goto err; 2356 } 2357 2358 rc = qed_iwarp_parse_rx_pkt(p_hwfn, &cm_info, (u8 *)(buf->data) + 2359 data->u.placement_offset, remote_mac_addr, 2360 local_mac_addr, &payload_len, 2361 &tcp_start_offset); 2362 if (rc) 2363 goto err; 2364 2365 /* Check if there is a listener for this 4-tuple+vlan */ 2366 listener = qed_iwarp_get_listener(p_hwfn, &cm_info); 2367 if (!listener) { 2368 DP_VERBOSE(p_hwfn, 2369 QED_MSG_RDMA, 2370 "SYN received on tuple not listened on parse_flags=%d packet len=%d\n", 2371 data->parse_flags, data->length.packet_length); 2372 2373 memset(&tx_pkt, 0, sizeof(tx_pkt)); 2374 tx_pkt.num_of_bds = 1; 2375 tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2; 2376 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 2377 tx_pkt.first_frag = buf->data_phys_addr + 2378 data->u.placement_offset; 2379 tx_pkt.first_frag_len = data->length.packet_length; 2380 tx_pkt.cookie = buf; 2381 2382 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_syn_handle, 2383 &tx_pkt, true); 2384 2385 if (rc) { 2386 DP_NOTICE(p_hwfn, 2387 "Can't post SYN back to chip rc=%d\n", rc); 2388 goto err; 2389 } 2390 return; 2391 } 2392 2393 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n"); 2394 /* There may be an open ep on this connection if this is a syn 2395 * retrasnmit... need to make sure there isn't... 2396 */ 2397 if (qed_iwarp_ep_exists(p_hwfn, &cm_info)) 2398 goto err; 2399 2400 ep = qed_iwarp_get_free_ep(p_hwfn); 2401 if (!ep) 2402 goto err; 2403 2404 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2405 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list); 2406 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2407 2408 ether_addr_copy(ep->remote_mac_addr, remote_mac_addr); 2409 ether_addr_copy(ep->local_mac_addr, local_mac_addr); 2410 2411 memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info)); 2412 2413 hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60); 2414 ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size; 2415 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss); 2416 2417 ep->event_cb = listener->event_cb; 2418 ep->cb_context = listener->cb_context; 2419 ep->connect_mode = TCP_CONNECT_PASSIVE; 2420 2421 ep->syn = buf; 2422 ep->syn_ip_payload_length = (u16)payload_len; 2423 ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset + 2424 tcp_start_offset; 2425 2426 rc = qed_iwarp_tcp_offload(p_hwfn, ep); 2427 if (rc) { 2428 qed_iwarp_return_ep(p_hwfn, ep); 2429 goto err; 2430 } 2431 2432 return; 2433 err: 2434 qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle); 2435 } 2436 2437 static void qed_iwarp_ll2_rel_rx_pkt(void *cxt, u8 connection_handle, 2438 void *cookie, dma_addr_t rx_buf_addr, 2439 bool b_last_packet) 2440 { 2441 struct qed_iwarp_ll2_buff *buffer = cookie; 2442 struct qed_hwfn *p_hwfn = cxt; 2443 2444 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size, 2445 buffer->data, buffer->data_phys_addr); 2446 kfree(buffer); 2447 } 2448 2449 static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle, 2450 void *cookie, dma_addr_t first_frag_addr, 2451 bool b_last_fragment, bool b_last_packet) 2452 { 2453 struct qed_iwarp_ll2_buff *buffer = cookie; 2454 struct qed_iwarp_ll2_buff *piggy; 2455 struct qed_hwfn *p_hwfn = cxt; 2456 2457 if (!buffer) /* can happen in packed mpa unaligned... */ 2458 return; 2459 2460 /* this was originally an rx packet, post it back */ 2461 piggy = buffer->piggy_buf; 2462 if (piggy) { 2463 buffer->piggy_buf = NULL; 2464 qed_iwarp_ll2_post_rx(p_hwfn, piggy, connection_handle); 2465 } 2466 2467 qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle); 2468 2469 if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle) 2470 qed_iwarp_process_pending_pkts(p_hwfn); 2471 2472 return; 2473 } 2474 2475 static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle, 2476 void *cookie, dma_addr_t first_frag_addr, 2477 bool b_last_fragment, bool b_last_packet) 2478 { 2479 struct qed_iwarp_ll2_buff *buffer = cookie; 2480 struct qed_hwfn *p_hwfn = cxt; 2481 2482 if (!buffer) 2483 return; 2484 2485 if (buffer->piggy_buf) { 2486 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 2487 buffer->piggy_buf->buff_size, 2488 buffer->piggy_buf->data, 2489 buffer->piggy_buf->data_phys_addr); 2490 2491 kfree(buffer->piggy_buf); 2492 } 2493 2494 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size, 2495 buffer->data, buffer->data_phys_addr); 2496 2497 kfree(buffer); 2498 } 2499 2500 /* The only slowpath for iwarp ll2 is unalign flush. When this completion 2501 * is received, need to reset the FPDU. 2502 */ 2503 static void 2504 qed_iwarp_ll2_slowpath(void *cxt, 2505 u8 connection_handle, 2506 u32 opaque_data_0, u32 opaque_data_1) 2507 { 2508 struct unaligned_opaque_data unalign_data; 2509 struct qed_hwfn *p_hwfn = cxt; 2510 struct qed_iwarp_fpdu *fpdu; 2511 2512 qed_iwarp_mpa_get_data(p_hwfn, &unalign_data, 2513 opaque_data_0, opaque_data_1); 2514 2515 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "(0x%x) Flush fpdu\n", 2516 unalign_data.cid); 2517 2518 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)unalign_data.cid); 2519 if (fpdu) 2520 memset(fpdu, 0, sizeof(*fpdu)); 2521 } 2522 2523 static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 2524 { 2525 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2526 int rc = 0; 2527 2528 if (iwarp_info->ll2_syn_handle != QED_IWARP_HANDLE_INVAL) { 2529 rc = qed_ll2_terminate_connection(p_hwfn, 2530 iwarp_info->ll2_syn_handle); 2531 if (rc) 2532 DP_INFO(p_hwfn, "Failed to terminate syn connection\n"); 2533 2534 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_syn_handle); 2535 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; 2536 } 2537 2538 if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) { 2539 rc = qed_ll2_terminate_connection(p_hwfn, 2540 iwarp_info->ll2_ooo_handle); 2541 if (rc) 2542 DP_INFO(p_hwfn, "Failed to terminate ooo connection\n"); 2543 2544 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle); 2545 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; 2546 } 2547 2548 if (iwarp_info->ll2_mpa_handle != QED_IWARP_HANDLE_INVAL) { 2549 rc = qed_ll2_terminate_connection(p_hwfn, 2550 iwarp_info->ll2_mpa_handle); 2551 if (rc) 2552 DP_INFO(p_hwfn, "Failed to terminate mpa connection\n"); 2553 2554 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_mpa_handle); 2555 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL; 2556 } 2557 2558 qed_llh_remove_mac_filter(p_hwfn, 2559 p_ptt, p_hwfn->p_rdma_info->iwarp.mac_addr); 2560 return rc; 2561 } 2562 2563 static int 2564 qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn, 2565 int num_rx_bufs, int buff_size, u8 ll2_handle) 2566 { 2567 struct qed_iwarp_ll2_buff *buffer; 2568 int rc = 0; 2569 int i; 2570 2571 for (i = 0; i < num_rx_bufs; i++) { 2572 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 2573 if (!buffer) { 2574 rc = -ENOMEM; 2575 break; 2576 } 2577 2578 buffer->data = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 2579 buff_size, 2580 &buffer->data_phys_addr, 2581 GFP_KERNEL); 2582 if (!buffer->data) { 2583 kfree(buffer); 2584 rc = -ENOMEM; 2585 break; 2586 } 2587 2588 buffer->buff_size = buff_size; 2589 rc = qed_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle); 2590 if (rc) 2591 /* buffers will be deallocated by qed_ll2 */ 2592 break; 2593 } 2594 return rc; 2595 } 2596 2597 #define QED_IWARP_MAX_BUF_SIZE(mtu) \ 2598 ALIGN((mtu) + ETH_HLEN + 2 * VLAN_HLEN + 2 + ETH_CACHE_LINE_SIZE, \ 2599 ETH_CACHE_LINE_SIZE) 2600 2601 static int 2602 qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, 2603 struct qed_rdma_start_in_params *params, 2604 struct qed_ptt *p_ptt) 2605 { 2606 struct qed_iwarp_info *iwarp_info; 2607 struct qed_ll2_acquire_data data; 2608 struct qed_ll2_cbs cbs; 2609 u32 mpa_buff_size; 2610 u16 n_ooo_bufs; 2611 int rc = 0; 2612 int i; 2613 2614 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2615 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; 2616 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; 2617 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL; 2618 2619 iwarp_info->max_mtu = params->max_mtu; 2620 2621 ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr); 2622 2623 rc = qed_llh_add_mac_filter(p_hwfn, p_ptt, params->mac_addr); 2624 if (rc) 2625 return rc; 2626 2627 /* Start SYN connection */ 2628 cbs.rx_comp_cb = qed_iwarp_ll2_comp_syn_pkt; 2629 cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt; 2630 cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt; 2631 cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt; 2632 cbs.cookie = p_hwfn; 2633 2634 memset(&data, 0, sizeof(data)); 2635 data.input.conn_type = QED_LL2_TYPE_IWARP; 2636 data.input.mtu = QED_IWARP_MAX_SYN_PKT_SIZE; 2637 data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE; 2638 data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE; 2639 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */ 2640 data.input.tx_tc = PKT_LB_TC; 2641 data.input.tx_dest = QED_LL2_TX_DEST_LB; 2642 data.p_connection_handle = &iwarp_info->ll2_syn_handle; 2643 data.cbs = &cbs; 2644 2645 rc = qed_ll2_acquire_connection(p_hwfn, &data); 2646 if (rc) { 2647 DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n"); 2648 qed_llh_remove_mac_filter(p_hwfn, p_ptt, params->mac_addr); 2649 return rc; 2650 } 2651 2652 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle); 2653 if (rc) { 2654 DP_NOTICE(p_hwfn, "Failed to establish LL2 connection\n"); 2655 goto err; 2656 } 2657 2658 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn, 2659 QED_IWARP_LL2_SYN_RX_SIZE, 2660 QED_IWARP_MAX_SYN_PKT_SIZE, 2661 iwarp_info->ll2_syn_handle); 2662 if (rc) 2663 goto err; 2664 2665 /* Start OOO connection */ 2666 data.input.conn_type = QED_LL2_TYPE_OOO; 2667 data.input.mtu = params->max_mtu; 2668 2669 n_ooo_bufs = (QED_IWARP_MAX_OOO * QED_IWARP_RCV_WND_SIZE_DEF) / 2670 iwarp_info->max_mtu; 2671 n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE); 2672 2673 data.input.rx_num_desc = n_ooo_bufs; 2674 data.input.rx_num_ooo_buffers = n_ooo_bufs; 2675 2676 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */ 2677 data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE; 2678 data.p_connection_handle = &iwarp_info->ll2_ooo_handle; 2679 2680 rc = qed_ll2_acquire_connection(p_hwfn, &data); 2681 if (rc) 2682 goto err; 2683 2684 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle); 2685 if (rc) 2686 goto err; 2687 2688 /* Start Unaligned MPA connection */ 2689 cbs.rx_comp_cb = qed_iwarp_ll2_comp_mpa_pkt; 2690 cbs.slowpath_cb = qed_iwarp_ll2_slowpath; 2691 2692 memset(&data, 0, sizeof(data)); 2693 data.input.conn_type = QED_LL2_TYPE_IWARP; 2694 data.input.mtu = params->max_mtu; 2695 /* FW requires that once a packet arrives OOO, it must have at 2696 * least 2 rx buffers available on the unaligned connection 2697 * for handling the case that it is a partial fpdu. 2698 */ 2699 data.input.rx_num_desc = n_ooo_bufs * 2; 2700 data.input.tx_num_desc = data.input.rx_num_desc; 2701 data.input.tx_max_bds_per_packet = QED_IWARP_MAX_BDS_PER_FPDU; 2702 data.p_connection_handle = &iwarp_info->ll2_mpa_handle; 2703 data.input.secondary_queue = true; 2704 data.cbs = &cbs; 2705 2706 rc = qed_ll2_acquire_connection(p_hwfn, &data); 2707 if (rc) 2708 goto err; 2709 2710 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle); 2711 if (rc) 2712 goto err; 2713 2714 mpa_buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu); 2715 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn, 2716 data.input.rx_num_desc, 2717 mpa_buff_size, 2718 iwarp_info->ll2_mpa_handle); 2719 if (rc) 2720 goto err; 2721 2722 iwarp_info->partial_fpdus = kcalloc((u16)p_hwfn->p_rdma_info->num_qps, 2723 sizeof(*iwarp_info->partial_fpdus), 2724 GFP_KERNEL); 2725 if (!iwarp_info->partial_fpdus) 2726 goto err; 2727 2728 iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps; 2729 2730 iwarp_info->mpa_intermediate_buf = kzalloc(mpa_buff_size, GFP_KERNEL); 2731 if (!iwarp_info->mpa_intermediate_buf) 2732 goto err; 2733 2734 /* The mpa_bufs array serves for pending RX packets received on the 2735 * mpa ll2 that don't have place on the tx ring and require later 2736 * processing. We can't fail on allocation of such a struct therefore 2737 * we allocate enough to take care of all rx packets 2738 */ 2739 iwarp_info->mpa_bufs = kcalloc(data.input.rx_num_desc, 2740 sizeof(*iwarp_info->mpa_bufs), 2741 GFP_KERNEL); 2742 if (!iwarp_info->mpa_bufs) 2743 goto err; 2744 2745 INIT_LIST_HEAD(&iwarp_info->mpa_buf_pending_list); 2746 INIT_LIST_HEAD(&iwarp_info->mpa_buf_list); 2747 for (i = 0; i < data.input.rx_num_desc; i++) 2748 list_add_tail(&iwarp_info->mpa_bufs[i].list_entry, 2749 &iwarp_info->mpa_buf_list); 2750 return rc; 2751 err: 2752 qed_iwarp_ll2_stop(p_hwfn, p_ptt); 2753 2754 return rc; 2755 } 2756 2757 int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, 2758 struct qed_rdma_start_in_params *params) 2759 { 2760 struct qed_iwarp_info *iwarp_info; 2761 u32 rcv_wnd_size; 2762 2763 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2764 2765 iwarp_info->tcp_flags = QED_IWARP_TS_EN; 2766 rcv_wnd_size = QED_IWARP_RCV_WND_SIZE_DEF; 2767 2768 /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */ 2769 iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) - 2770 ilog2(QED_IWARP_RCV_WND_SIZE_MIN); 2771 iwarp_info->rcv_wnd_size = rcv_wnd_size >> iwarp_info->rcv_wnd_scale; 2772 iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED; 2773 iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED; 2774 2775 iwarp_info->peer2peer = QED_IWARP_PARAM_P2P; 2776 2777 iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND | 2778 MPA_RTR_TYPE_ZERO_WRITE | 2779 MPA_RTR_TYPE_ZERO_READ; 2780 2781 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock); 2782 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list); 2783 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list); 2784 2785 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP, 2786 qed_iwarp_async_event); 2787 qed_ooo_setup(p_hwfn); 2788 2789 return qed_iwarp_ll2_start(p_hwfn, params, p_ptt); 2790 } 2791 2792 int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 2793 { 2794 int rc; 2795 2796 qed_iwarp_free_prealloc_ep(p_hwfn); 2797 rc = qed_iwarp_wait_for_all_cids(p_hwfn); 2798 if (rc) 2799 return rc; 2800 2801 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP); 2802 2803 return qed_iwarp_ll2_stop(p_hwfn, p_ptt); 2804 } 2805 2806 static void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn, 2807 struct qed_iwarp_ep *ep, 2808 u8 fw_return_code) 2809 { 2810 struct qed_iwarp_cm_event_params params; 2811 2812 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_ERROR, true); 2813 2814 params.event = QED_IWARP_EVENT_CLOSE; 2815 params.ep_context = ep; 2816 params.cm_info = &ep->cm_info; 2817 params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ? 2818 0 : -ECONNRESET; 2819 2820 ep->state = QED_IWARP_EP_CLOSED; 2821 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2822 list_del(&ep->list_entry); 2823 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2824 2825 ep->event_cb(ep->cb_context, ¶ms); 2826 } 2827 2828 static void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn, 2829 struct qed_iwarp_ep *ep, 2830 int fw_ret_code) 2831 { 2832 struct qed_iwarp_cm_event_params params; 2833 bool event_cb = false; 2834 2835 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n", 2836 ep->cid, fw_ret_code); 2837 2838 switch (fw_ret_code) { 2839 case IWARP_EXCEPTION_DETECTED_LLP_CLOSED: 2840 params.status = 0; 2841 params.event = QED_IWARP_EVENT_DISCONNECT; 2842 event_cb = true; 2843 break; 2844 case IWARP_EXCEPTION_DETECTED_LLP_RESET: 2845 params.status = -ECONNRESET; 2846 params.event = QED_IWARP_EVENT_DISCONNECT; 2847 event_cb = true; 2848 break; 2849 case IWARP_EXCEPTION_DETECTED_RQ_EMPTY: 2850 params.event = QED_IWARP_EVENT_RQ_EMPTY; 2851 event_cb = true; 2852 break; 2853 case IWARP_EXCEPTION_DETECTED_IRQ_FULL: 2854 params.event = QED_IWARP_EVENT_IRQ_FULL; 2855 event_cb = true; 2856 break; 2857 case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT: 2858 params.event = QED_IWARP_EVENT_LLP_TIMEOUT; 2859 event_cb = true; 2860 break; 2861 case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR: 2862 params.event = QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR; 2863 event_cb = true; 2864 break; 2865 case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW: 2866 params.event = QED_IWARP_EVENT_CQ_OVERFLOW; 2867 event_cb = true; 2868 break; 2869 case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC: 2870 params.event = QED_IWARP_EVENT_QP_CATASTROPHIC; 2871 event_cb = true; 2872 break; 2873 case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR: 2874 params.event = QED_IWARP_EVENT_LOCAL_ACCESS_ERROR; 2875 event_cb = true; 2876 break; 2877 case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR: 2878 params.event = QED_IWARP_EVENT_REMOTE_OPERATION_ERROR; 2879 event_cb = true; 2880 break; 2881 case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED: 2882 params.event = QED_IWARP_EVENT_TERMINATE_RECEIVED; 2883 event_cb = true; 2884 break; 2885 default: 2886 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2887 "Unhandled exception received...fw_ret_code=%d\n", 2888 fw_ret_code); 2889 break; 2890 } 2891 2892 if (event_cb) { 2893 params.ep_context = ep; 2894 params.cm_info = &ep->cm_info; 2895 ep->event_cb(ep->cb_context, ¶ms); 2896 } 2897 } 2898 2899 static void 2900 qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn, 2901 struct qed_iwarp_ep *ep, u8 fw_return_code) 2902 { 2903 struct qed_iwarp_cm_event_params params; 2904 2905 memset(¶ms, 0, sizeof(params)); 2906 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE; 2907 params.ep_context = ep; 2908 params.cm_info = &ep->cm_info; 2909 ep->state = QED_IWARP_EP_CLOSED; 2910 2911 switch (fw_return_code) { 2912 case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET: 2913 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2914 "%s(0x%x) TCP connect got invalid packet\n", 2915 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2916 params.status = -ECONNRESET; 2917 break; 2918 case IWARP_CONN_ERROR_TCP_CONNECTION_RST: 2919 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2920 "%s(0x%x) TCP Connection Reset\n", 2921 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2922 params.status = -ECONNRESET; 2923 break; 2924 case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT: 2925 DP_NOTICE(p_hwfn, "%s(0x%x) TCP timeout\n", 2926 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2927 params.status = -EBUSY; 2928 break; 2929 case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER: 2930 DP_NOTICE(p_hwfn, "%s(0x%x) MPA not supported VER\n", 2931 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2932 params.status = -ECONNREFUSED; 2933 break; 2934 case IWARP_CONN_ERROR_MPA_INVALID_PACKET: 2935 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n", 2936 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2937 params.status = -ECONNRESET; 2938 break; 2939 default: 2940 DP_ERR(p_hwfn, 2941 "%s(0x%x) Unexpected return code tcp connect: %d\n", 2942 QED_IWARP_CONNECT_MODE_STRING(ep), 2943 ep->tcp_cid, fw_return_code); 2944 params.status = -ECONNRESET; 2945 break; 2946 } 2947 2948 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 2949 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 2950 qed_iwarp_return_ep(p_hwfn, ep); 2951 } else { 2952 ep->event_cb(ep->cb_context, ¶ms); 2953 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2954 list_del(&ep->list_entry); 2955 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2956 } 2957 } 2958 2959 static void 2960 qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn, 2961 struct qed_iwarp_ep *ep, u8 fw_return_code) 2962 { 2963 u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle; 2964 2965 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 2966 /* Done with the SYN packet, post back to ll2 rx */ 2967 qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle); 2968 2969 ep->syn = NULL; 2970 2971 /* If connect failed - upper layer doesn't know about it */ 2972 if (fw_return_code == RDMA_RETURN_OK) 2973 qed_iwarp_mpa_received(p_hwfn, ep); 2974 else 2975 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep, 2976 fw_return_code); 2977 } else { 2978 if (fw_return_code == RDMA_RETURN_OK) 2979 qed_iwarp_mpa_offload(p_hwfn, ep); 2980 else 2981 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep, 2982 fw_return_code); 2983 } 2984 } 2985 2986 static inline bool 2987 qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 2988 { 2989 if (!ep || (ep->sig != QED_EP_SIG)) { 2990 DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep); 2991 return false; 2992 } 2993 2994 return true; 2995 } 2996 2997 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, 2998 u8 fw_event_code, u16 echo, 2999 union event_ring_data *data, 3000 u8 fw_return_code) 3001 { 3002 struct qed_rdma_events events = p_hwfn->p_rdma_info->events; 3003 struct regpair *fw_handle = &data->rdma_data.async_handle; 3004 struct qed_iwarp_ep *ep = NULL; 3005 u16 srq_offset; 3006 u16 srq_id; 3007 u16 cid; 3008 3009 ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi, 3010 fw_handle->lo); 3011 3012 switch (fw_event_code) { 3013 case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE: 3014 /* Async completion after TCP 3-way handshake */ 3015 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3016 return -EINVAL; 3017 DP_VERBOSE(p_hwfn, 3018 QED_MSG_RDMA, 3019 "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n", 3020 ep->tcp_cid, fw_return_code); 3021 qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code); 3022 break; 3023 case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED: 3024 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3025 return -EINVAL; 3026 DP_VERBOSE(p_hwfn, 3027 QED_MSG_RDMA, 3028 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n", 3029 ep->cid, fw_return_code); 3030 qed_iwarp_exception_received(p_hwfn, ep, fw_return_code); 3031 break; 3032 case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE: 3033 /* Async completion for Close Connection ramrod */ 3034 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3035 return -EINVAL; 3036 DP_VERBOSE(p_hwfn, 3037 QED_MSG_RDMA, 3038 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n", 3039 ep->cid, fw_return_code); 3040 qed_iwarp_qp_in_error(p_hwfn, ep, fw_return_code); 3041 break; 3042 case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED: 3043 /* Async event for active side only */ 3044 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3045 return -EINVAL; 3046 DP_VERBOSE(p_hwfn, 3047 QED_MSG_RDMA, 3048 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n", 3049 ep->cid, fw_return_code); 3050 qed_iwarp_mpa_reply_arrived(p_hwfn, ep); 3051 break; 3052 case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE: 3053 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3054 return -EINVAL; 3055 DP_VERBOSE(p_hwfn, 3056 QED_MSG_RDMA, 3057 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n", 3058 ep->cid, fw_return_code); 3059 qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code); 3060 break; 3061 case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED: 3062 cid = (u16)le32_to_cpu(fw_handle->lo); 3063 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 3064 "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid); 3065 qed_iwarp_cid_cleaned(p_hwfn, cid); 3066 3067 break; 3068 case IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY: 3069 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY\n"); 3070 srq_offset = p_hwfn->p_rdma_info->srq_id_offset; 3071 /* FW assigns value that is no greater than u16 */ 3072 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset; 3073 events.affiliated_event(events.context, 3074 QED_IWARP_EVENT_SRQ_EMPTY, 3075 &srq_id); 3076 break; 3077 case IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT: 3078 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT\n"); 3079 srq_offset = p_hwfn->p_rdma_info->srq_id_offset; 3080 /* FW assigns value that is no greater than u16 */ 3081 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset; 3082 events.affiliated_event(events.context, 3083 QED_IWARP_EVENT_SRQ_LIMIT, 3084 &srq_id); 3085 break; 3086 case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW: 3087 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n"); 3088 3089 p_hwfn->p_rdma_info->events.affiliated_event( 3090 p_hwfn->p_rdma_info->events.context, 3091 QED_IWARP_EVENT_CQ_OVERFLOW, 3092 (void *)fw_handle); 3093 break; 3094 default: 3095 DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n", 3096 fw_event_code); 3097 return -EINVAL; 3098 } 3099 return 0; 3100 } 3101 3102 int 3103 qed_iwarp_create_listen(void *rdma_cxt, 3104 struct qed_iwarp_listen_in *iparams, 3105 struct qed_iwarp_listen_out *oparams) 3106 { 3107 struct qed_hwfn *p_hwfn = rdma_cxt; 3108 struct qed_iwarp_listener *listener; 3109 3110 listener = kzalloc(sizeof(*listener), GFP_KERNEL); 3111 if (!listener) 3112 return -ENOMEM; 3113 3114 listener->ip_version = iparams->ip_version; 3115 memcpy(listener->ip_addr, iparams->ip_addr, sizeof(listener->ip_addr)); 3116 listener->port = iparams->port; 3117 listener->vlan = iparams->vlan; 3118 3119 listener->event_cb = iparams->event_cb; 3120 listener->cb_context = iparams->cb_context; 3121 listener->max_backlog = iparams->max_backlog; 3122 oparams->handle = listener; 3123 3124 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3125 list_add_tail(&listener->list_entry, 3126 &p_hwfn->p_rdma_info->iwarp.listen_list); 3127 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3128 3129 DP_VERBOSE(p_hwfn, 3130 QED_MSG_RDMA, 3131 "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n", 3132 listener->event_cb, 3133 listener, 3134 listener->ip_addr[0], 3135 listener->ip_addr[1], 3136 listener->ip_addr[2], 3137 listener->ip_addr[3], listener->port, listener->vlan); 3138 3139 return 0; 3140 } 3141 3142 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle) 3143 { 3144 struct qed_iwarp_listener *listener = handle; 3145 struct qed_hwfn *p_hwfn = rdma_cxt; 3146 3147 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "handle=%p\n", handle); 3148 3149 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3150 list_del(&listener->list_entry); 3151 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3152 3153 kfree(listener); 3154 3155 return 0; 3156 } 3157 3158 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams) 3159 { 3160 struct qed_hwfn *p_hwfn = rdma_cxt; 3161 struct qed_sp_init_data init_data; 3162 struct qed_spq_entry *p_ent; 3163 struct qed_iwarp_ep *ep; 3164 struct qed_rdma_qp *qp; 3165 int rc; 3166 3167 ep = iparams->ep_context; 3168 if (!ep) { 3169 DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n"); 3170 return -EINVAL; 3171 } 3172 3173 qp = ep->qp; 3174 3175 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n", 3176 qp->icid, ep->tcp_cid); 3177 3178 memset(&init_data, 0, sizeof(init_data)); 3179 init_data.cid = qp->icid; 3180 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 3181 init_data.comp_mode = QED_SPQ_MODE_CB; 3182 3183 rc = qed_sp_init_request(p_hwfn, &p_ent, 3184 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR, 3185 PROTOCOLID_IWARP, &init_data); 3186 3187 if (rc) 3188 return rc; 3189 3190 rc = qed_spq_post(p_hwfn, p_ent, NULL); 3191 3192 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc); 3193 3194 return rc; 3195 } 3196 3197 void 3198 qed_iwarp_query_qp(struct qed_rdma_qp *qp, 3199 struct qed_rdma_query_qp_out_params *out_params) 3200 { 3201 out_params->state = qed_iwarp2roce_state(qp->iwarp_state); 3202 } 3203