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 (64 * 1024) 68 #define TIMESTAMP_HEADER_SIZE (12) 69 70 #define QED_IWARP_TS_EN BIT(0) 71 #define QED_IWARP_DA_EN BIT(1) 72 #define QED_IWARP_PARAM_CRC_NEEDED (1) 73 #define QED_IWARP_PARAM_P2P (1) 74 75 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, 76 u8 fw_event_code, u16 echo, 77 union event_ring_data *data, 78 u8 fw_return_code); 79 80 /* Override devinfo with iWARP specific values */ 81 void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn) 82 { 83 struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev; 84 85 dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE; 86 dev->max_qp = min_t(u32, 87 IWARP_MAX_QPS, 88 p_hwfn->p_rdma_info->num_qps) - 89 QED_IWARP_PREALLOC_CNT; 90 91 dev->max_cq = dev->max_qp; 92 93 dev->max_qp_resp_rd_atomic_resc = QED_IWARP_IRD_DEFAULT; 94 dev->max_qp_req_rd_atomic_resc = QED_IWARP_ORD_DEFAULT; 95 } 96 97 void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 98 { 99 p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP; 100 qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1); 101 p_hwfn->b_rdma_enabled_in_prs = true; 102 } 103 104 /* We have two cid maps, one for tcp which should be used only from passive 105 * syn processing and replacing a pre-allocated ep in the list. The second 106 * for active tcp and for QPs. 107 */ 108 static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid) 109 { 110 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 111 112 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 113 114 if (cid < QED_IWARP_PREALLOC_CNT) 115 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 116 cid); 117 else 118 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); 119 120 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 121 } 122 123 void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn, 124 struct iwarp_init_func_params *p_ramrod) 125 { 126 p_ramrod->ll2_ooo_q_index = RESC_START(p_hwfn, QED_LL2_QUEUE) + 127 p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle; 128 } 129 130 static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid) 131 { 132 int rc; 133 134 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 135 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); 136 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 137 if (rc) { 138 DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n"); 139 return rc; 140 } 141 *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 142 143 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid); 144 if (rc) 145 qed_iwarp_cid_cleaned(p_hwfn, *cid); 146 147 return rc; 148 } 149 150 static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid) 151 { 152 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 153 154 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 155 qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid); 156 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 157 } 158 159 /* This function allocates a cid for passive tcp (called from syn receive) 160 * the reason it's separate from the regular cid allocation is because it 161 * is assured that these cids already have ilt allocated. They are preallocated 162 * to ensure that we won't need to allocate memory during syn processing 163 */ 164 static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid) 165 { 166 int rc; 167 168 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 169 170 rc = qed_rdma_bmap_alloc_id(p_hwfn, 171 &p_hwfn->p_rdma_info->tcp_cid_map, cid); 172 173 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 174 175 if (rc) { 176 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 177 "can't allocate iwarp tcp cid max-count=%d\n", 178 p_hwfn->p_rdma_info->tcp_cid_map.max_count); 179 180 *cid = QED_IWARP_INVALID_TCP_CID; 181 return rc; 182 } 183 184 *cid += qed_cxt_get_proto_cid_start(p_hwfn, 185 p_hwfn->p_rdma_info->proto); 186 return 0; 187 } 188 189 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, 190 struct qed_rdma_qp *qp, 191 struct qed_rdma_create_qp_out_params *out_params) 192 { 193 struct iwarp_create_qp_ramrod_data *p_ramrod; 194 struct qed_sp_init_data init_data; 195 struct qed_spq_entry *p_ent; 196 u16 physical_queue; 197 u32 cid; 198 int rc; 199 200 qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 201 IWARP_SHARED_QUEUE_PAGE_SIZE, 202 &qp->shared_queue_phys_addr, 203 GFP_KERNEL); 204 if (!qp->shared_queue) 205 return -ENOMEM; 206 207 out_params->sq_pbl_virt = (u8 *)qp->shared_queue + 208 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; 209 out_params->sq_pbl_phys = qp->shared_queue_phys_addr + 210 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; 211 out_params->rq_pbl_virt = (u8 *)qp->shared_queue + 212 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; 213 out_params->rq_pbl_phys = qp->shared_queue_phys_addr + 214 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; 215 216 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 217 if (rc) 218 goto err1; 219 220 qp->icid = (u16)cid; 221 222 memset(&init_data, 0, sizeof(init_data)); 223 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 224 init_data.cid = qp->icid; 225 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 226 227 rc = qed_sp_init_request(p_hwfn, &p_ent, 228 IWARP_RAMROD_CMD_ID_CREATE_QP, 229 PROTOCOLID_IWARP, &init_data); 230 if (rc) 231 goto err2; 232 233 p_ramrod = &p_ent->ramrod.iwarp_create_qp; 234 235 SET_FIELD(p_ramrod->flags, 236 IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN, 237 qp->fmr_and_reserved_lkey); 238 239 SET_FIELD(p_ramrod->flags, 240 IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all); 241 242 SET_FIELD(p_ramrod->flags, 243 IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN, 244 qp->incoming_rdma_read_en); 245 246 SET_FIELD(p_ramrod->flags, 247 IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN, 248 qp->incoming_rdma_write_en); 249 250 SET_FIELD(p_ramrod->flags, 251 IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN, 252 qp->incoming_atomic_en); 253 254 SET_FIELD(p_ramrod->flags, 255 IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq); 256 257 p_ramrod->pd = qp->pd; 258 p_ramrod->sq_num_pages = qp->sq_num_pages; 259 p_ramrod->rq_num_pages = qp->rq_num_pages; 260 261 p_ramrod->qp_handle_for_cqe.hi = cpu_to_le32(qp->qp_handle.hi); 262 p_ramrod->qp_handle_for_cqe.lo = cpu_to_le32(qp->qp_handle.lo); 263 264 p_ramrod->cq_cid_for_sq = 265 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id); 266 p_ramrod->cq_cid_for_rq = 267 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id); 268 269 p_ramrod->dpi = cpu_to_le16(qp->dpi); 270 271 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 272 p_ramrod->physical_q0 = cpu_to_le16(physical_queue); 273 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 274 p_ramrod->physical_q1 = cpu_to_le16(physical_queue); 275 276 rc = qed_spq_post(p_hwfn, p_ent, NULL); 277 if (rc) 278 goto err2; 279 280 return rc; 281 282 err2: 283 qed_iwarp_cid_cleaned(p_hwfn, cid); 284 err1: 285 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 286 IWARP_SHARED_QUEUE_PAGE_SIZE, 287 qp->shared_queue, qp->shared_queue_phys_addr); 288 289 return rc; 290 } 291 292 static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 293 { 294 struct iwarp_modify_qp_ramrod_data *p_ramrod; 295 struct qed_sp_init_data init_data; 296 struct qed_spq_entry *p_ent; 297 int rc; 298 299 /* Get SPQ entry */ 300 memset(&init_data, 0, sizeof(init_data)); 301 init_data.cid = qp->icid; 302 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 303 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 304 305 rc = qed_sp_init_request(p_hwfn, &p_ent, 306 IWARP_RAMROD_CMD_ID_MODIFY_QP, 307 p_hwfn->p_rdma_info->proto, &init_data); 308 if (rc) 309 return rc; 310 311 p_ramrod = &p_ent->ramrod.iwarp_modify_qp; 312 SET_FIELD(p_ramrod->flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN, 313 0x1); 314 if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING) 315 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_CLOSING; 316 else 317 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_ERROR; 318 319 rc = qed_spq_post(p_hwfn, p_ent, NULL); 320 321 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc); 322 323 return rc; 324 } 325 326 enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state) 327 { 328 switch (state) { 329 case QED_ROCE_QP_STATE_RESET: 330 case QED_ROCE_QP_STATE_INIT: 331 case QED_ROCE_QP_STATE_RTR: 332 return QED_IWARP_QP_STATE_IDLE; 333 case QED_ROCE_QP_STATE_RTS: 334 return QED_IWARP_QP_STATE_RTS; 335 case QED_ROCE_QP_STATE_SQD: 336 return QED_IWARP_QP_STATE_CLOSING; 337 case QED_ROCE_QP_STATE_ERR: 338 return QED_IWARP_QP_STATE_ERROR; 339 case QED_ROCE_QP_STATE_SQE: 340 return QED_IWARP_QP_STATE_TERMINATE; 341 default: 342 return QED_IWARP_QP_STATE_ERROR; 343 } 344 } 345 346 static enum qed_roce_qp_state 347 qed_iwarp2roce_state(enum qed_iwarp_qp_state state) 348 { 349 switch (state) { 350 case QED_IWARP_QP_STATE_IDLE: 351 return QED_ROCE_QP_STATE_INIT; 352 case QED_IWARP_QP_STATE_RTS: 353 return QED_ROCE_QP_STATE_RTS; 354 case QED_IWARP_QP_STATE_TERMINATE: 355 return QED_ROCE_QP_STATE_SQE; 356 case QED_IWARP_QP_STATE_CLOSING: 357 return QED_ROCE_QP_STATE_SQD; 358 case QED_IWARP_QP_STATE_ERROR: 359 return QED_ROCE_QP_STATE_ERR; 360 default: 361 return QED_ROCE_QP_STATE_ERR; 362 } 363 } 364 365 const char *iwarp_state_names[] = { 366 "IDLE", 367 "RTS", 368 "TERMINATE", 369 "CLOSING", 370 "ERROR", 371 }; 372 373 int 374 qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, 375 struct qed_rdma_qp *qp, 376 enum qed_iwarp_qp_state new_state, bool internal) 377 { 378 enum qed_iwarp_qp_state prev_iw_state; 379 bool modify_fw = false; 380 int rc = 0; 381 382 /* modify QP can be called from upper-layer or as a result of async 383 * RST/FIN... therefore need to protect 384 */ 385 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 386 prev_iw_state = qp->iwarp_state; 387 388 if (prev_iw_state == new_state) { 389 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 390 return 0; 391 } 392 393 switch (prev_iw_state) { 394 case QED_IWARP_QP_STATE_IDLE: 395 switch (new_state) { 396 case QED_IWARP_QP_STATE_RTS: 397 qp->iwarp_state = QED_IWARP_QP_STATE_RTS; 398 break; 399 case QED_IWARP_QP_STATE_ERROR: 400 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; 401 if (!internal) 402 modify_fw = true; 403 break; 404 default: 405 break; 406 } 407 break; 408 case QED_IWARP_QP_STATE_RTS: 409 switch (new_state) { 410 case QED_IWARP_QP_STATE_CLOSING: 411 if (!internal) 412 modify_fw = true; 413 414 qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING; 415 break; 416 case QED_IWARP_QP_STATE_ERROR: 417 if (!internal) 418 modify_fw = true; 419 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; 420 break; 421 default: 422 break; 423 } 424 break; 425 case QED_IWARP_QP_STATE_ERROR: 426 switch (new_state) { 427 case QED_IWARP_QP_STATE_IDLE: 428 429 qp->iwarp_state = new_state; 430 break; 431 case QED_IWARP_QP_STATE_CLOSING: 432 /* could happen due to race... do nothing.... */ 433 break; 434 default: 435 rc = -EINVAL; 436 } 437 break; 438 case QED_IWARP_QP_STATE_TERMINATE: 439 case QED_IWARP_QP_STATE_CLOSING: 440 qp->iwarp_state = new_state; 441 break; 442 default: 443 break; 444 } 445 446 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n", 447 qp->icid, 448 iwarp_state_names[prev_iw_state], 449 iwarp_state_names[qp->iwarp_state], 450 internal ? "internal" : ""); 451 452 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 453 454 if (modify_fw) 455 rc = qed_iwarp_modify_fw(p_hwfn, qp); 456 457 return rc; 458 } 459 460 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 461 { 462 struct qed_sp_init_data init_data; 463 struct qed_spq_entry *p_ent; 464 int rc; 465 466 /* Get SPQ entry */ 467 memset(&init_data, 0, sizeof(init_data)); 468 init_data.cid = qp->icid; 469 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 470 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 471 472 rc = qed_sp_init_request(p_hwfn, &p_ent, 473 IWARP_RAMROD_CMD_ID_DESTROY_QP, 474 p_hwfn->p_rdma_info->proto, &init_data); 475 if (rc) 476 return rc; 477 478 rc = qed_spq_post(p_hwfn, p_ent, NULL); 479 480 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc); 481 482 return rc; 483 } 484 485 static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn, 486 struct qed_iwarp_ep *ep, 487 bool remove_from_active_list) 488 { 489 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 490 sizeof(*ep->ep_buffer_virt), 491 ep->ep_buffer_virt, ep->ep_buffer_phys); 492 493 if (remove_from_active_list) { 494 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 495 list_del(&ep->list_entry); 496 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 497 } 498 499 if (ep->qp) 500 ep->qp->ep = NULL; 501 502 kfree(ep); 503 } 504 505 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 506 { 507 struct qed_iwarp_ep *ep = qp->ep; 508 int wait_count = 0; 509 int rc = 0; 510 511 if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) { 512 rc = qed_iwarp_modify_qp(p_hwfn, qp, 513 QED_IWARP_QP_STATE_ERROR, false); 514 if (rc) 515 return rc; 516 } 517 518 /* Make sure ep is closed before returning and freeing memory. */ 519 if (ep) { 520 while (ep->state != QED_IWARP_EP_CLOSED && wait_count++ < 200) 521 msleep(100); 522 523 if (ep->state != QED_IWARP_EP_CLOSED) 524 DP_NOTICE(p_hwfn, "ep state close timeout state=%x\n", 525 ep->state); 526 527 qed_iwarp_destroy_ep(p_hwfn, ep, false); 528 } 529 530 rc = qed_iwarp_fw_destroy(p_hwfn, qp); 531 532 if (qp->shared_queue) 533 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 534 IWARP_SHARED_QUEUE_PAGE_SIZE, 535 qp->shared_queue, qp->shared_queue_phys_addr); 536 537 return rc; 538 } 539 540 static int 541 qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out) 542 { 543 struct qed_iwarp_ep *ep; 544 int rc; 545 546 ep = kzalloc(sizeof(*ep), GFP_KERNEL); 547 if (!ep) 548 return -ENOMEM; 549 550 ep->state = QED_IWARP_EP_INIT; 551 552 ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 553 sizeof(*ep->ep_buffer_virt), 554 &ep->ep_buffer_phys, 555 GFP_KERNEL); 556 if (!ep->ep_buffer_virt) { 557 rc = -ENOMEM; 558 goto err; 559 } 560 561 ep->sig = QED_EP_SIG; 562 563 *ep_out = ep; 564 565 return 0; 566 567 err: 568 kfree(ep); 569 return rc; 570 } 571 572 static void 573 qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn, 574 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod) 575 { 576 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n", 577 p_tcp_ramrod->tcp.local_mac_addr_lo, 578 p_tcp_ramrod->tcp.local_mac_addr_mid, 579 p_tcp_ramrod->tcp.local_mac_addr_hi, 580 p_tcp_ramrod->tcp.remote_mac_addr_lo, 581 p_tcp_ramrod->tcp.remote_mac_addr_mid, 582 p_tcp_ramrod->tcp.remote_mac_addr_hi); 583 584 if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) { 585 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 586 "local_ip=%pI4h:%x, remote_ip=%pI4h:%x, vlan=%x\n", 587 p_tcp_ramrod->tcp.local_ip, 588 p_tcp_ramrod->tcp.local_port, 589 p_tcp_ramrod->tcp.remote_ip, 590 p_tcp_ramrod->tcp.remote_port, 591 p_tcp_ramrod->tcp.vlan_id); 592 } else { 593 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 594 "local_ip=%pI6:%x, remote_ip=%pI6:%x, vlan=%x\n", 595 p_tcp_ramrod->tcp.local_ip, 596 p_tcp_ramrod->tcp.local_port, 597 p_tcp_ramrod->tcp.remote_ip, 598 p_tcp_ramrod->tcp.remote_port, 599 p_tcp_ramrod->tcp.vlan_id); 600 } 601 602 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 603 "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n", 604 p_tcp_ramrod->tcp.flow_label, 605 p_tcp_ramrod->tcp.ttl, 606 p_tcp_ramrod->tcp.tos_or_tc, 607 p_tcp_ramrod->tcp.mss, 608 p_tcp_ramrod->tcp.rcv_wnd_scale, 609 p_tcp_ramrod->tcp.connect_mode, 610 p_tcp_ramrod->tcp.flags); 611 612 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n", 613 p_tcp_ramrod->tcp.syn_ip_payload_length, 614 p_tcp_ramrod->tcp.syn_phy_addr_lo, 615 p_tcp_ramrod->tcp.syn_phy_addr_hi); 616 } 617 618 static int 619 qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 620 { 621 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 622 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod; 623 struct tcp_offload_params_opt2 *tcp; 624 struct qed_sp_init_data init_data; 625 struct qed_spq_entry *p_ent; 626 dma_addr_t async_output_phys; 627 dma_addr_t in_pdata_phys; 628 u16 physical_q; 629 u8 tcp_flags; 630 int rc; 631 int i; 632 633 memset(&init_data, 0, sizeof(init_data)); 634 init_data.cid = ep->tcp_cid; 635 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 636 if (ep->connect_mode == TCP_CONNECT_PASSIVE) 637 init_data.comp_mode = QED_SPQ_MODE_CB; 638 else 639 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 640 641 rc = qed_sp_init_request(p_hwfn, &p_ent, 642 IWARP_RAMROD_CMD_ID_TCP_OFFLOAD, 643 PROTOCOLID_IWARP, &init_data); 644 if (rc) 645 return rc; 646 647 p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload; 648 649 in_pdata_phys = ep->ep_buffer_phys + 650 offsetof(struct qed_iwarp_ep_memory, in_pdata); 651 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr, 652 in_pdata_phys); 653 654 p_tcp_ramrod->iwarp.incoming_ulp_buffer.len = 655 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata)); 656 657 async_output_phys = ep->ep_buffer_phys + 658 offsetof(struct qed_iwarp_ep_memory, async_output); 659 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf, 660 async_output_phys); 661 662 p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep)); 663 p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep)); 664 665 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 666 p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q); 667 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 668 p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q); 669 p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev; 670 671 tcp = &p_tcp_ramrod->tcp; 672 qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi, 673 &tcp->remote_mac_addr_mid, 674 &tcp->remote_mac_addr_lo, ep->remote_mac_addr); 675 qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid, 676 &tcp->local_mac_addr_lo, ep->local_mac_addr); 677 678 tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan); 679 680 tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags; 681 tcp->flags = 0; 682 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN, 683 !!(tcp_flags & QED_IWARP_TS_EN)); 684 685 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN, 686 !!(tcp_flags & QED_IWARP_DA_EN)); 687 688 tcp->ip_version = ep->cm_info.ip_version; 689 690 for (i = 0; i < 4; i++) { 691 tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]); 692 tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]); 693 } 694 695 tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port); 696 tcp->local_port = cpu_to_le16(ep->cm_info.local_port); 697 tcp->mss = cpu_to_le16(ep->mss); 698 tcp->flow_label = 0; 699 tcp->ttl = 0x40; 700 tcp->tos_or_tc = 0; 701 702 tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale; 703 tcp->connect_mode = ep->connect_mode; 704 705 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 706 tcp->syn_ip_payload_length = 707 cpu_to_le16(ep->syn_ip_payload_length); 708 tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr); 709 tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr); 710 } 711 712 qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod); 713 714 rc = qed_spq_post(p_hwfn, p_ent, NULL); 715 716 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 717 "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc); 718 719 return rc; 720 } 721 722 static void 723 qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 724 { 725 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 726 struct qed_iwarp_cm_event_params params; 727 struct mpa_v2_hdr *mpa_v2; 728 union async_output *async_data; 729 u16 mpa_ord, mpa_ird; 730 u8 mpa_hdr_size = 0; 731 u8 mpa_rev; 732 733 async_data = &ep->ep_buffer_virt->async_output; 734 735 mpa_rev = async_data->mpa_request.mpa_handshake_mode; 736 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 737 "private_data_len=%x handshake_mode=%x private_data=(%x)\n", 738 async_data->mpa_request.ulp_data_len, 739 mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata))); 740 741 if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) { 742 /* Read ord/ird values from private data buffer */ 743 mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata; 744 mpa_hdr_size = sizeof(*mpa_v2); 745 746 mpa_ord = ntohs(mpa_v2->ord); 747 mpa_ird = ntohs(mpa_v2->ird); 748 749 /* Temprary store in cm_info incoming ord/ird requested, later 750 * replace with negotiated value during accept 751 */ 752 ep->cm_info.ord = (u8)min_t(u16, 753 (mpa_ord & MPA_V2_IRD_ORD_MASK), 754 QED_IWARP_ORD_DEFAULT); 755 756 ep->cm_info.ird = (u8)min_t(u16, 757 (mpa_ird & MPA_V2_IRD_ORD_MASK), 758 QED_IWARP_IRD_DEFAULT); 759 760 /* Peer2Peer negotiation */ 761 ep->rtr_type = MPA_RTR_TYPE_NONE; 762 if (mpa_ird & MPA_V2_PEER2PEER_MODEL) { 763 if (mpa_ord & MPA_V2_WRITE_RTR) 764 ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE; 765 766 if (mpa_ord & MPA_V2_READ_RTR) 767 ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ; 768 769 if (mpa_ird & MPA_V2_SEND_RTR) 770 ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND; 771 772 ep->rtr_type &= iwarp_info->rtr_type; 773 774 /* if we're left with no match send our capabilities */ 775 if (ep->rtr_type == MPA_RTR_TYPE_NONE) 776 ep->rtr_type = iwarp_info->rtr_type; 777 } 778 779 ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED; 780 } else { 781 ep->cm_info.ord = QED_IWARP_ORD_DEFAULT; 782 ep->cm_info.ird = QED_IWARP_IRD_DEFAULT; 783 ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC; 784 } 785 786 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 787 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n", 788 mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type, 789 async_data->mpa_request.ulp_data_len, mpa_hdr_size); 790 791 /* Strip mpa v2 hdr from private data before sending to upper layer */ 792 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size; 793 794 ep->cm_info.private_data_len = async_data->mpa_request.ulp_data_len - 795 mpa_hdr_size; 796 797 params.event = QED_IWARP_EVENT_MPA_REQUEST; 798 params.cm_info = &ep->cm_info; 799 params.ep_context = ep; 800 params.status = 0; 801 802 ep->state = QED_IWARP_EP_MPA_REQ_RCVD; 803 ep->event_cb(ep->cb_context, ¶ms); 804 } 805 806 static int 807 qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 808 { 809 struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod; 810 struct qed_sp_init_data init_data; 811 dma_addr_t async_output_phys; 812 struct qed_spq_entry *p_ent; 813 dma_addr_t out_pdata_phys; 814 dma_addr_t in_pdata_phys; 815 struct qed_rdma_qp *qp; 816 bool reject; 817 int rc; 818 819 if (!ep) 820 return -EINVAL; 821 822 qp = ep->qp; 823 reject = !qp; 824 825 memset(&init_data, 0, sizeof(init_data)); 826 init_data.cid = reject ? ep->tcp_cid : qp->icid; 827 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 828 829 if (ep->connect_mode == TCP_CONNECT_ACTIVE) 830 init_data.comp_mode = QED_SPQ_MODE_CB; 831 else 832 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 833 834 rc = qed_sp_init_request(p_hwfn, &p_ent, 835 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD, 836 PROTOCOLID_IWARP, &init_data); 837 if (rc) 838 return rc; 839 840 p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload; 841 out_pdata_phys = ep->ep_buffer_phys + 842 offsetof(struct qed_iwarp_ep_memory, out_pdata); 843 DMA_REGPAIR_LE(p_mpa_ramrod->common.outgoing_ulp_buffer.addr, 844 out_pdata_phys); 845 p_mpa_ramrod->common.outgoing_ulp_buffer.len = 846 ep->cm_info.private_data_len; 847 p_mpa_ramrod->common.crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed; 848 849 p_mpa_ramrod->common.out_rq.ord = ep->cm_info.ord; 850 p_mpa_ramrod->common.out_rq.ird = ep->cm_info.ird; 851 852 p_mpa_ramrod->tcp_cid = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid; 853 854 in_pdata_phys = ep->ep_buffer_phys + 855 offsetof(struct qed_iwarp_ep_memory, in_pdata); 856 p_mpa_ramrod->tcp_connect_side = ep->connect_mode; 857 DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr, 858 in_pdata_phys); 859 p_mpa_ramrod->incoming_ulp_buffer.len = 860 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata)); 861 async_output_phys = ep->ep_buffer_phys + 862 offsetof(struct qed_iwarp_ep_memory, async_output); 863 DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf, 864 async_output_phys); 865 p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep)); 866 p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep)); 867 868 if (!reject) { 869 DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr, 870 qp->shared_queue_phys_addr); 871 p_mpa_ramrod->stats_counter_id = 872 RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue; 873 } else { 874 p_mpa_ramrod->common.reject = 1; 875 } 876 877 p_mpa_ramrod->mode = ep->mpa_rev; 878 SET_FIELD(p_mpa_ramrod->rtr_pref, 879 IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type); 880 881 ep->state = QED_IWARP_EP_MPA_OFFLOADED; 882 rc = qed_spq_post(p_hwfn, p_ent, NULL); 883 if (!reject) 884 ep->cid = qp->icid; /* Now they're migrated. */ 885 886 DP_VERBOSE(p_hwfn, 887 QED_MSG_RDMA, 888 "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", 889 reject ? 0xffff : qp->icid, 890 ep->tcp_cid, 891 rc, 892 ep->cm_info.ird, 893 ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject); 894 return rc; 895 } 896 897 static void 898 qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 899 { 900 ep->state = QED_IWARP_EP_INIT; 901 if (ep->qp) 902 ep->qp->ep = NULL; 903 ep->qp = NULL; 904 memset(&ep->cm_info, 0, sizeof(ep->cm_info)); 905 906 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) { 907 /* We don't care about the return code, it's ok if tcp_cid 908 * remains invalid...in this case we'll defer allocation 909 */ 910 qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid); 911 } 912 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 913 914 list_del(&ep->list_entry); 915 list_add_tail(&ep->list_entry, 916 &p_hwfn->p_rdma_info->iwarp.ep_free_list); 917 918 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 919 } 920 921 void 922 qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 923 { 924 struct mpa_v2_hdr *mpa_v2_params; 925 union async_output *async_data; 926 u16 mpa_ird, mpa_ord; 927 u8 mpa_data_size = 0; 928 929 if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) { 930 mpa_v2_params = 931 (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata); 932 mpa_data_size = sizeof(*mpa_v2_params); 933 mpa_ird = ntohs(mpa_v2_params->ird); 934 mpa_ord = ntohs(mpa_v2_params->ord); 935 936 ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK); 937 ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK); 938 } 939 async_data = &ep->ep_buffer_virt->async_output; 940 941 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size; 942 ep->cm_info.private_data_len = async_data->mpa_response.ulp_data_len - 943 mpa_data_size; 944 } 945 946 void 947 qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 948 { 949 struct qed_iwarp_cm_event_params params; 950 951 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 952 DP_NOTICE(p_hwfn, 953 "MPA reply event not expected on passive side!\n"); 954 return; 955 } 956 957 params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY; 958 959 qed_iwarp_parse_private_data(p_hwfn, ep); 960 961 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 962 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 963 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 964 965 params.cm_info = &ep->cm_info; 966 params.ep_context = ep; 967 params.status = 0; 968 969 ep->mpa_reply_processed = true; 970 971 ep->event_cb(ep->cb_context, ¶ms); 972 } 973 974 #define QED_IWARP_CONNECT_MODE_STRING(ep) \ 975 ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active" 976 977 /* Called as a result of the event: 978 * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE 979 */ 980 static void 981 qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn, 982 struct qed_iwarp_ep *ep, u8 fw_return_code) 983 { 984 struct qed_iwarp_cm_event_params params; 985 986 if (ep->connect_mode == TCP_CONNECT_ACTIVE) 987 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE; 988 else 989 params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE; 990 991 if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed) 992 qed_iwarp_parse_private_data(p_hwfn, ep); 993 994 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 995 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 996 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 997 998 params.cm_info = &ep->cm_info; 999 1000 params.ep_context = ep; 1001 1002 ep->state = QED_IWARP_EP_CLOSED; 1003 1004 switch (fw_return_code) { 1005 case RDMA_RETURN_OK: 1006 ep->qp->max_rd_atomic_req = ep->cm_info.ord; 1007 ep->qp->max_rd_atomic_resp = ep->cm_info.ird; 1008 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1); 1009 ep->state = QED_IWARP_EP_ESTABLISHED; 1010 params.status = 0; 1011 break; 1012 case IWARP_CONN_ERROR_MPA_TIMEOUT: 1013 DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n", 1014 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1015 params.status = -EBUSY; 1016 break; 1017 case IWARP_CONN_ERROR_MPA_ERROR_REJECT: 1018 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n", 1019 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1020 params.status = -ECONNREFUSED; 1021 break; 1022 case IWARP_CONN_ERROR_MPA_RST: 1023 DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n", 1024 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid, 1025 ep->tcp_cid); 1026 params.status = -ECONNRESET; 1027 break; 1028 case IWARP_CONN_ERROR_MPA_FIN: 1029 DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n", 1030 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1031 params.status = -ECONNREFUSED; 1032 break; 1033 case IWARP_CONN_ERROR_MPA_INSUF_IRD: 1034 DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n", 1035 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1036 params.status = -ECONNREFUSED; 1037 break; 1038 case IWARP_CONN_ERROR_MPA_RTR_MISMATCH: 1039 DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n", 1040 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1041 params.status = -ECONNREFUSED; 1042 break; 1043 case IWARP_CONN_ERROR_MPA_INVALID_PACKET: 1044 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n", 1045 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1046 params.status = -ECONNREFUSED; 1047 break; 1048 case IWARP_CONN_ERROR_MPA_LOCAL_ERROR: 1049 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n", 1050 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1051 params.status = -ECONNREFUSED; 1052 break; 1053 case IWARP_CONN_ERROR_MPA_TERMINATE: 1054 DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n", 1055 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1056 params.status = -ECONNREFUSED; 1057 break; 1058 default: 1059 params.status = -ECONNRESET; 1060 break; 1061 } 1062 1063 ep->event_cb(ep->cb_context, ¶ms); 1064 1065 /* on passive side, if there is no associated QP (REJECT) we need to 1066 * return the ep to the pool, (in the regular case we add an element 1067 * in accept instead of this one. 1068 * In both cases we need to remove it from the ep_list. 1069 */ 1070 if (fw_return_code != RDMA_RETURN_OK) { 1071 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 1072 if ((ep->connect_mode == TCP_CONNECT_PASSIVE) && 1073 (!ep->qp)) { /* Rejected */ 1074 qed_iwarp_return_ep(p_hwfn, ep); 1075 } else { 1076 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1077 list_del(&ep->list_entry); 1078 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1079 } 1080 } 1081 } 1082 1083 static void 1084 qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn, 1085 struct qed_iwarp_ep *ep, u8 *mpa_data_size) 1086 { 1087 struct mpa_v2_hdr *mpa_v2_params; 1088 u16 mpa_ird, mpa_ord; 1089 1090 *mpa_data_size = 0; 1091 if (MPA_REV2(ep->mpa_rev)) { 1092 mpa_v2_params = 1093 (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata; 1094 *mpa_data_size = sizeof(*mpa_v2_params); 1095 1096 mpa_ird = (u16)ep->cm_info.ird; 1097 mpa_ord = (u16)ep->cm_info.ord; 1098 1099 if (ep->rtr_type != MPA_RTR_TYPE_NONE) { 1100 mpa_ird |= MPA_V2_PEER2PEER_MODEL; 1101 1102 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND) 1103 mpa_ird |= MPA_V2_SEND_RTR; 1104 1105 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE) 1106 mpa_ord |= MPA_V2_WRITE_RTR; 1107 1108 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) 1109 mpa_ord |= MPA_V2_READ_RTR; 1110 } 1111 1112 mpa_v2_params->ird = htons(mpa_ird); 1113 mpa_v2_params->ord = htons(mpa_ord); 1114 1115 DP_VERBOSE(p_hwfn, 1116 QED_MSG_RDMA, 1117 "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n", 1118 mpa_v2_params->ird, 1119 mpa_v2_params->ord, 1120 *((u32 *)mpa_v2_params), 1121 mpa_ord & MPA_V2_IRD_ORD_MASK, 1122 mpa_ird & MPA_V2_IRD_ORD_MASK, 1123 !!(mpa_ird & MPA_V2_PEER2PEER_MODEL), 1124 !!(mpa_ird & MPA_V2_SEND_RTR), 1125 !!(mpa_ord & MPA_V2_WRITE_RTR), 1126 !!(mpa_ord & MPA_V2_READ_RTR)); 1127 } 1128 } 1129 1130 int qed_iwarp_connect(void *rdma_cxt, 1131 struct qed_iwarp_connect_in *iparams, 1132 struct qed_iwarp_connect_out *oparams) 1133 { 1134 struct qed_hwfn *p_hwfn = rdma_cxt; 1135 struct qed_iwarp_info *iwarp_info; 1136 struct qed_iwarp_ep *ep; 1137 u8 mpa_data_size = 0; 1138 u8 ts_hdr_size = 0; 1139 u32 cid; 1140 int rc; 1141 1142 if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) || 1143 (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) { 1144 DP_NOTICE(p_hwfn, 1145 "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n", 1146 iparams->qp->icid, iparams->cm_info.ord, 1147 iparams->cm_info.ird); 1148 1149 return -EINVAL; 1150 } 1151 1152 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1153 1154 /* Allocate ep object */ 1155 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 1156 if (rc) 1157 return rc; 1158 1159 rc = qed_iwarp_create_ep(p_hwfn, &ep); 1160 if (rc) 1161 goto err; 1162 1163 ep->tcp_cid = cid; 1164 1165 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1166 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list); 1167 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1168 1169 ep->qp = iparams->qp; 1170 ep->qp->ep = ep; 1171 ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr); 1172 ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr); 1173 memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info)); 1174 1175 ep->cm_info.ord = iparams->cm_info.ord; 1176 ep->cm_info.ird = iparams->cm_info.ird; 1177 1178 ep->rtr_type = iwarp_info->rtr_type; 1179 if (!iwarp_info->peer2peer) 1180 ep->rtr_type = MPA_RTR_TYPE_NONE; 1181 1182 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0)) 1183 ep->cm_info.ord = 1; 1184 1185 ep->mpa_rev = iwarp_info->mpa_rev; 1186 1187 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1188 1189 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1190 ep->cm_info.private_data_len = iparams->cm_info.private_data_len + 1191 mpa_data_size; 1192 1193 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1194 iparams->cm_info.private_data, 1195 iparams->cm_info.private_data_len); 1196 1197 if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN) 1198 ts_hdr_size = TIMESTAMP_HEADER_SIZE; 1199 1200 ep->mss = iparams->mss - ts_hdr_size; 1201 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss); 1202 1203 ep->event_cb = iparams->event_cb; 1204 ep->cb_context = iparams->cb_context; 1205 ep->connect_mode = TCP_CONNECT_ACTIVE; 1206 1207 oparams->ep_context = ep; 1208 1209 rc = qed_iwarp_tcp_offload(p_hwfn, ep); 1210 1211 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n", 1212 iparams->qp->icid, ep->tcp_cid, rc); 1213 1214 if (rc) { 1215 qed_iwarp_destroy_ep(p_hwfn, ep, true); 1216 goto err; 1217 } 1218 1219 return rc; 1220 err: 1221 qed_iwarp_cid_cleaned(p_hwfn, cid); 1222 1223 return rc; 1224 } 1225 1226 static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn) 1227 { 1228 struct qed_iwarp_ep *ep = NULL; 1229 int rc; 1230 1231 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1232 1233 if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) { 1234 DP_ERR(p_hwfn, "Ep list is empty\n"); 1235 goto out; 1236 } 1237 1238 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list, 1239 struct qed_iwarp_ep, list_entry); 1240 1241 /* in some cases we could have failed allocating a tcp cid when added 1242 * from accept / failure... retry now..this is not the common case. 1243 */ 1244 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) { 1245 rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid); 1246 1247 /* if we fail we could look for another entry with a valid 1248 * tcp_cid, but since we don't expect to reach this anyway 1249 * it's not worth the handling 1250 */ 1251 if (rc) { 1252 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 1253 ep = NULL; 1254 goto out; 1255 } 1256 } 1257 1258 list_del(&ep->list_entry); 1259 1260 out: 1261 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1262 return ep; 1263 } 1264 1265 #define QED_IWARP_MAX_CID_CLEAN_TIME 100 1266 #define QED_IWARP_MAX_NO_PROGRESS_CNT 5 1267 1268 /* This function waits for all the bits of a bmap to be cleared, as long as 1269 * there is progress ( i.e. the number of bits left to be cleared decreases ) 1270 * the function continues. 1271 */ 1272 static int 1273 qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap) 1274 { 1275 int prev_weight = 0; 1276 int wait_count = 0; 1277 int weight = 0; 1278 1279 weight = bitmap_weight(bmap->bitmap, bmap->max_count); 1280 prev_weight = weight; 1281 1282 while (weight) { 1283 msleep(QED_IWARP_MAX_CID_CLEAN_TIME); 1284 1285 weight = bitmap_weight(bmap->bitmap, bmap->max_count); 1286 1287 if (prev_weight == weight) { 1288 wait_count++; 1289 } else { 1290 prev_weight = weight; 1291 wait_count = 0; 1292 } 1293 1294 if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) { 1295 DP_NOTICE(p_hwfn, 1296 "%s bitmap wait timed out (%d cids pending)\n", 1297 bmap->name, weight); 1298 return -EBUSY; 1299 } 1300 } 1301 return 0; 1302 } 1303 1304 static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn) 1305 { 1306 int rc; 1307 int i; 1308 1309 rc = qed_iwarp_wait_cid_map_cleared(p_hwfn, 1310 &p_hwfn->p_rdma_info->tcp_cid_map); 1311 if (rc) 1312 return rc; 1313 1314 /* Now free the tcp cids from the main cid map */ 1315 for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++) 1316 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i); 1317 1318 /* Now wait for all cids to be completed */ 1319 return qed_iwarp_wait_cid_map_cleared(p_hwfn, 1320 &p_hwfn->p_rdma_info->cid_map); 1321 } 1322 1323 static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn) 1324 { 1325 struct qed_iwarp_ep *ep; 1326 1327 while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) { 1328 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1329 1330 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list, 1331 struct qed_iwarp_ep, list_entry); 1332 1333 if (!ep) { 1334 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1335 break; 1336 } 1337 list_del(&ep->list_entry); 1338 1339 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1340 1341 if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID) 1342 qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid); 1343 1344 qed_iwarp_destroy_ep(p_hwfn, ep, false); 1345 } 1346 } 1347 1348 static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init) 1349 { 1350 struct qed_iwarp_ep *ep; 1351 int rc = 0; 1352 int count; 1353 u32 cid; 1354 int i; 1355 1356 count = init ? QED_IWARP_PREALLOC_CNT : 1; 1357 for (i = 0; i < count; i++) { 1358 rc = qed_iwarp_create_ep(p_hwfn, &ep); 1359 if (rc) 1360 return rc; 1361 1362 /* During initialization we allocate from the main pool, 1363 * afterwards we allocate only from the tcp_cid. 1364 */ 1365 if (init) { 1366 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 1367 if (rc) 1368 goto err; 1369 qed_iwarp_set_tcp_cid(p_hwfn, cid); 1370 } else { 1371 /* We don't care about the return code, it's ok if 1372 * tcp_cid remains invalid...in this case we'll 1373 * defer allocation 1374 */ 1375 qed_iwarp_alloc_tcp_cid(p_hwfn, &cid); 1376 } 1377 1378 ep->tcp_cid = cid; 1379 1380 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1381 list_add_tail(&ep->list_entry, 1382 &p_hwfn->p_rdma_info->iwarp.ep_free_list); 1383 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1384 } 1385 1386 return rc; 1387 1388 err: 1389 qed_iwarp_destroy_ep(p_hwfn, ep, false); 1390 1391 return rc; 1392 } 1393 1394 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn) 1395 { 1396 int rc; 1397 1398 /* Allocate bitmap for tcp cid. These are used by passive side 1399 * to ensure it can allocate a tcp cid during dpc that was 1400 * pre-acquired and doesn't require dynamic allocation of ilt 1401 */ 1402 rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1403 QED_IWARP_PREALLOC_CNT, "TCP_CID"); 1404 if (rc) { 1405 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1406 "Failed to allocate tcp cid, rc = %d\n", rc); 1407 return rc; 1408 } 1409 1410 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list); 1411 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1412 1413 return qed_iwarp_prealloc_ep(p_hwfn, true); 1414 } 1415 1416 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn) 1417 { 1418 qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1); 1419 } 1420 1421 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams) 1422 { 1423 struct qed_hwfn *p_hwfn = rdma_cxt; 1424 struct qed_iwarp_ep *ep; 1425 u8 mpa_data_size = 0; 1426 int rc; 1427 1428 ep = iparams->ep_context; 1429 if (!ep) { 1430 DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n"); 1431 return -EINVAL; 1432 } 1433 1434 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n", 1435 iparams->qp->icid, ep->tcp_cid); 1436 1437 if ((iparams->ord > QED_IWARP_ORD_DEFAULT) || 1438 (iparams->ird > QED_IWARP_IRD_DEFAULT)) { 1439 DP_VERBOSE(p_hwfn, 1440 QED_MSG_RDMA, 1441 "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n", 1442 iparams->qp->icid, 1443 ep->tcp_cid, iparams->ord, iparams->ord); 1444 return -EINVAL; 1445 } 1446 1447 qed_iwarp_prealloc_ep(p_hwfn, false); 1448 1449 ep->cb_context = iparams->cb_context; 1450 ep->qp = iparams->qp; 1451 ep->qp->ep = ep; 1452 1453 if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) { 1454 /* Negotiate ord/ird: if upperlayer requested ord larger than 1455 * ird advertised by remote, we need to decrease our ord 1456 */ 1457 if (iparams->ord > ep->cm_info.ird) 1458 iparams->ord = ep->cm_info.ird; 1459 1460 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && 1461 (iparams->ird == 0)) 1462 iparams->ird = 1; 1463 } 1464 1465 /* Update cm_info ord/ird to be negotiated values */ 1466 ep->cm_info.ord = iparams->ord; 1467 ep->cm_info.ird = iparams->ird; 1468 1469 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1470 1471 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1472 ep->cm_info.private_data_len = iparams->private_data_len + 1473 mpa_data_size; 1474 1475 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1476 iparams->private_data, iparams->private_data_len); 1477 1478 rc = qed_iwarp_mpa_offload(p_hwfn, ep); 1479 if (rc) 1480 qed_iwarp_modify_qp(p_hwfn, 1481 iparams->qp, QED_IWARP_QP_STATE_ERROR, 1); 1482 1483 return rc; 1484 } 1485 1486 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams) 1487 { 1488 struct qed_hwfn *p_hwfn = rdma_cxt; 1489 struct qed_iwarp_ep *ep; 1490 u8 mpa_data_size = 0; 1491 1492 ep = iparams->ep_context; 1493 if (!ep) { 1494 DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n"); 1495 return -EINVAL; 1496 } 1497 1498 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid); 1499 1500 ep->cb_context = iparams->cb_context; 1501 ep->qp = NULL; 1502 1503 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1504 1505 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1506 ep->cm_info.private_data_len = iparams->private_data_len + 1507 mpa_data_size; 1508 1509 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1510 iparams->private_data, iparams->private_data_len); 1511 1512 return qed_iwarp_mpa_offload(p_hwfn, ep); 1513 } 1514 1515 static void 1516 qed_iwarp_print_cm_info(struct qed_hwfn *p_hwfn, 1517 struct qed_iwarp_cm_info *cm_info) 1518 { 1519 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "ip_version = %d\n", 1520 cm_info->ip_version); 1521 1522 if (cm_info->ip_version == QED_TCP_IPV4) 1523 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1524 "remote_ip %pI4h:%x, local_ip %pI4h:%x vlan=%x\n", 1525 cm_info->remote_ip, cm_info->remote_port, 1526 cm_info->local_ip, cm_info->local_port, 1527 cm_info->vlan); 1528 else 1529 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1530 "remote_ip %pI6:%x, local_ip %pI6:%x vlan=%x\n", 1531 cm_info->remote_ip, cm_info->remote_port, 1532 cm_info->local_ip, cm_info->local_port, 1533 cm_info->vlan); 1534 1535 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1536 "private_data_len = %x ord = %d, ird = %d\n", 1537 cm_info->private_data_len, cm_info->ord, cm_info->ird); 1538 } 1539 1540 static int 1541 qed_iwarp_ll2_post_rx(struct qed_hwfn *p_hwfn, 1542 struct qed_iwarp_ll2_buff *buf, u8 handle) 1543 { 1544 int rc; 1545 1546 rc = qed_ll2_post_rx_buffer(p_hwfn, handle, buf->data_phys_addr, 1547 (u16)buf->buff_size, buf, 1); 1548 if (rc) { 1549 DP_NOTICE(p_hwfn, 1550 "Failed to repost rx buffer to ll2 rc = %d, handle=%d\n", 1551 rc, handle); 1552 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buf->buff_size, 1553 buf->data, buf->data_phys_addr); 1554 kfree(buf); 1555 } 1556 1557 return rc; 1558 } 1559 1560 static bool 1561 qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info) 1562 { 1563 struct qed_iwarp_ep *ep = NULL; 1564 bool found = false; 1565 1566 list_for_each_entry(ep, 1567 &p_hwfn->p_rdma_info->iwarp.ep_list, 1568 list_entry) { 1569 if ((ep->cm_info.local_port == cm_info->local_port) && 1570 (ep->cm_info.remote_port == cm_info->remote_port) && 1571 (ep->cm_info.vlan == cm_info->vlan) && 1572 !memcmp(&ep->cm_info.local_ip, cm_info->local_ip, 1573 sizeof(cm_info->local_ip)) && 1574 !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip, 1575 sizeof(cm_info->remote_ip))) { 1576 found = true; 1577 break; 1578 } 1579 } 1580 1581 if (found) { 1582 DP_NOTICE(p_hwfn, 1583 "SYN received on active connection - dropping\n"); 1584 qed_iwarp_print_cm_info(p_hwfn, cm_info); 1585 1586 return true; 1587 } 1588 1589 return false; 1590 } 1591 1592 static struct qed_iwarp_listener * 1593 qed_iwarp_get_listener(struct qed_hwfn *p_hwfn, 1594 struct qed_iwarp_cm_info *cm_info) 1595 { 1596 struct qed_iwarp_listener *listener = NULL; 1597 static const u32 ip_zero[4] = { 0, 0, 0, 0 }; 1598 bool found = false; 1599 1600 qed_iwarp_print_cm_info(p_hwfn, cm_info); 1601 1602 list_for_each_entry(listener, 1603 &p_hwfn->p_rdma_info->iwarp.listen_list, 1604 list_entry) { 1605 if (listener->port == cm_info->local_port) { 1606 if (!memcmp(listener->ip_addr, 1607 ip_zero, sizeof(ip_zero))) { 1608 found = true; 1609 break; 1610 } 1611 1612 if (!memcmp(listener->ip_addr, 1613 cm_info->local_ip, 1614 sizeof(cm_info->local_ip)) && 1615 (listener->vlan == cm_info->vlan)) { 1616 found = true; 1617 break; 1618 } 1619 } 1620 } 1621 1622 if (found) { 1623 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener found = %p\n", 1624 listener); 1625 return listener; 1626 } 1627 1628 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener not found\n"); 1629 return NULL; 1630 } 1631 1632 static int 1633 qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn, 1634 struct qed_iwarp_cm_info *cm_info, 1635 void *buf, 1636 u8 *remote_mac_addr, 1637 u8 *local_mac_addr, 1638 int *payload_len, int *tcp_start_offset) 1639 { 1640 struct vlan_ethhdr *vethh; 1641 bool vlan_valid = false; 1642 struct ipv6hdr *ip6h; 1643 struct ethhdr *ethh; 1644 struct tcphdr *tcph; 1645 struct iphdr *iph; 1646 int eth_hlen; 1647 int ip_hlen; 1648 int eth_type; 1649 int i; 1650 1651 ethh = buf; 1652 eth_type = ntohs(ethh->h_proto); 1653 if (eth_type == ETH_P_8021Q) { 1654 vlan_valid = true; 1655 vethh = (struct vlan_ethhdr *)ethh; 1656 cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK; 1657 eth_type = ntohs(vethh->h_vlan_encapsulated_proto); 1658 } 1659 1660 eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0); 1661 1662 ether_addr_copy(remote_mac_addr, ethh->h_source); 1663 ether_addr_copy(local_mac_addr, ethh->h_dest); 1664 1665 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n", 1666 eth_type, ethh->h_source); 1667 1668 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_hlen=%d destination mac: %pM\n", 1669 eth_hlen, ethh->h_dest); 1670 1671 iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen); 1672 1673 if (eth_type == ETH_P_IP) { 1674 cm_info->local_ip[0] = ntohl(iph->daddr); 1675 cm_info->remote_ip[0] = ntohl(iph->saddr); 1676 cm_info->ip_version = TCP_IPV4; 1677 1678 ip_hlen = (iph->ihl) * sizeof(u32); 1679 *payload_len = ntohs(iph->tot_len) - ip_hlen; 1680 } else if (eth_type == ETH_P_IPV6) { 1681 ip6h = (struct ipv6hdr *)iph; 1682 for (i = 0; i < 4; i++) { 1683 cm_info->local_ip[i] = 1684 ntohl(ip6h->daddr.in6_u.u6_addr32[i]); 1685 cm_info->remote_ip[i] = 1686 ntohl(ip6h->saddr.in6_u.u6_addr32[i]); 1687 } 1688 cm_info->ip_version = TCP_IPV6; 1689 1690 ip_hlen = sizeof(*ip6h); 1691 *payload_len = ntohs(ip6h->payload_len); 1692 } else { 1693 DP_NOTICE(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type); 1694 return -EINVAL; 1695 } 1696 1697 tcph = (struct tcphdr *)((u8 *)iph + ip_hlen); 1698 1699 if (!tcph->syn) { 1700 DP_NOTICE(p_hwfn, 1701 "Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n", 1702 iph->ihl, tcph->source, tcph->dest); 1703 return -EINVAL; 1704 } 1705 1706 cm_info->local_port = ntohs(tcph->dest); 1707 cm_info->remote_port = ntohs(tcph->source); 1708 1709 qed_iwarp_print_cm_info(p_hwfn, cm_info); 1710 1711 *tcp_start_offset = eth_hlen + ip_hlen; 1712 1713 return 0; 1714 } 1715 1716 static void 1717 qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) 1718 { 1719 struct qed_iwarp_ll2_buff *buf = data->cookie; 1720 struct qed_iwarp_listener *listener; 1721 struct qed_ll2_tx_pkt_info tx_pkt; 1722 struct qed_iwarp_cm_info cm_info; 1723 struct qed_hwfn *p_hwfn = cxt; 1724 u8 remote_mac_addr[ETH_ALEN]; 1725 u8 local_mac_addr[ETH_ALEN]; 1726 struct qed_iwarp_ep *ep; 1727 int tcp_start_offset; 1728 u8 ts_hdr_size = 0; 1729 u8 ll2_syn_handle; 1730 int payload_len; 1731 u32 hdr_size; 1732 int rc; 1733 1734 memset(&cm_info, 0, sizeof(cm_info)); 1735 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle; 1736 1737 /* Check if packet was received with errors... */ 1738 if (data->err_flags) { 1739 DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n", 1740 data->err_flags); 1741 goto err; 1742 } 1743 1744 if (GET_FIELD(data->parse_flags, 1745 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) && 1746 GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) { 1747 DP_NOTICE(p_hwfn, "Syn packet received with checksum error\n"); 1748 goto err; 1749 } 1750 1751 rc = qed_iwarp_parse_rx_pkt(p_hwfn, &cm_info, (u8 *)(buf->data) + 1752 data->u.placement_offset, remote_mac_addr, 1753 local_mac_addr, &payload_len, 1754 &tcp_start_offset); 1755 if (rc) 1756 goto err; 1757 1758 /* Check if there is a listener for this 4-tuple+vlan */ 1759 listener = qed_iwarp_get_listener(p_hwfn, &cm_info); 1760 if (!listener) { 1761 DP_VERBOSE(p_hwfn, 1762 QED_MSG_RDMA, 1763 "SYN received on tuple not listened on parse_flags=%d packet len=%d\n", 1764 data->parse_flags, data->length.packet_length); 1765 1766 memset(&tx_pkt, 0, sizeof(tx_pkt)); 1767 tx_pkt.num_of_bds = 1; 1768 tx_pkt.vlan = data->vlan; 1769 1770 if (GET_FIELD(data->parse_flags, 1771 PARSING_AND_ERR_FLAGS_TAG8021QEXIST)) 1772 SET_FIELD(tx_pkt.bd_flags, 1773 CORE_TX_BD_DATA_VLAN_INSERTION, 1); 1774 1775 tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2; 1776 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 1777 tx_pkt.first_frag = buf->data_phys_addr + 1778 data->u.placement_offset; 1779 tx_pkt.first_frag_len = data->length.packet_length; 1780 tx_pkt.cookie = buf; 1781 1782 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_syn_handle, 1783 &tx_pkt, true); 1784 1785 if (rc) { 1786 DP_NOTICE(p_hwfn, 1787 "Can't post SYN back to chip rc=%d\n", rc); 1788 goto err; 1789 } 1790 return; 1791 } 1792 1793 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n"); 1794 /* There may be an open ep on this connection if this is a syn 1795 * retrasnmit... need to make sure there isn't... 1796 */ 1797 if (qed_iwarp_ep_exists(p_hwfn, &cm_info)) 1798 goto err; 1799 1800 ep = qed_iwarp_get_free_ep(p_hwfn); 1801 if (!ep) 1802 goto err; 1803 1804 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1805 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list); 1806 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1807 1808 ether_addr_copy(ep->remote_mac_addr, remote_mac_addr); 1809 ether_addr_copy(ep->local_mac_addr, local_mac_addr); 1810 1811 memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info)); 1812 1813 if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN) 1814 ts_hdr_size = TIMESTAMP_HEADER_SIZE; 1815 1816 hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60) + 1817 ts_hdr_size; 1818 ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size; 1819 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss); 1820 1821 ep->event_cb = listener->event_cb; 1822 ep->cb_context = listener->cb_context; 1823 ep->connect_mode = TCP_CONNECT_PASSIVE; 1824 1825 ep->syn = buf; 1826 ep->syn_ip_payload_length = (u16)payload_len; 1827 ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset + 1828 tcp_start_offset; 1829 1830 rc = qed_iwarp_tcp_offload(p_hwfn, ep); 1831 if (rc) { 1832 qed_iwarp_return_ep(p_hwfn, ep); 1833 goto err; 1834 } 1835 1836 return; 1837 err: 1838 qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle); 1839 } 1840 1841 static void qed_iwarp_ll2_rel_rx_pkt(void *cxt, u8 connection_handle, 1842 void *cookie, dma_addr_t rx_buf_addr, 1843 bool b_last_packet) 1844 { 1845 struct qed_iwarp_ll2_buff *buffer = cookie; 1846 struct qed_hwfn *p_hwfn = cxt; 1847 1848 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size, 1849 buffer->data, buffer->data_phys_addr); 1850 kfree(buffer); 1851 } 1852 1853 static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle, 1854 void *cookie, dma_addr_t first_frag_addr, 1855 bool b_last_fragment, bool b_last_packet) 1856 { 1857 struct qed_iwarp_ll2_buff *buffer = cookie; 1858 struct qed_hwfn *p_hwfn = cxt; 1859 1860 /* this was originally an rx packet, post it back */ 1861 qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle); 1862 } 1863 1864 static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle, 1865 void *cookie, dma_addr_t first_frag_addr, 1866 bool b_last_fragment, bool b_last_packet) 1867 { 1868 struct qed_iwarp_ll2_buff *buffer = cookie; 1869 struct qed_hwfn *p_hwfn = cxt; 1870 1871 if (!buffer) 1872 return; 1873 1874 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size, 1875 buffer->data, buffer->data_phys_addr); 1876 1877 kfree(buffer); 1878 } 1879 1880 static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 1881 { 1882 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1883 int rc = 0; 1884 1885 if (iwarp_info->ll2_syn_handle != QED_IWARP_HANDLE_INVAL) { 1886 rc = qed_ll2_terminate_connection(p_hwfn, 1887 iwarp_info->ll2_syn_handle); 1888 if (rc) 1889 DP_INFO(p_hwfn, "Failed to terminate syn connection\n"); 1890 1891 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_syn_handle); 1892 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; 1893 } 1894 1895 if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) { 1896 rc = qed_ll2_terminate_connection(p_hwfn, 1897 iwarp_info->ll2_ooo_handle); 1898 if (rc) 1899 DP_INFO(p_hwfn, "Failed to terminate ooo connection\n"); 1900 1901 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle); 1902 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; 1903 } 1904 1905 qed_llh_remove_mac_filter(p_hwfn, 1906 p_ptt, p_hwfn->p_rdma_info->iwarp.mac_addr); 1907 return rc; 1908 } 1909 1910 static int 1911 qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn, 1912 int num_rx_bufs, int buff_size, u8 ll2_handle) 1913 { 1914 struct qed_iwarp_ll2_buff *buffer; 1915 int rc = 0; 1916 int i; 1917 1918 for (i = 0; i < num_rx_bufs; i++) { 1919 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 1920 if (!buffer) { 1921 rc = -ENOMEM; 1922 break; 1923 } 1924 1925 buffer->data = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 1926 buff_size, 1927 &buffer->data_phys_addr, 1928 GFP_KERNEL); 1929 if (!buffer->data) { 1930 kfree(buffer); 1931 rc = -ENOMEM; 1932 break; 1933 } 1934 1935 buffer->buff_size = buff_size; 1936 rc = qed_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle); 1937 if (rc) 1938 /* buffers will be deallocated by qed_ll2 */ 1939 break; 1940 } 1941 return rc; 1942 } 1943 1944 #define QED_IWARP_MAX_BUF_SIZE(mtu) \ 1945 ALIGN((mtu) + ETH_HLEN + 2 * VLAN_HLEN + 2 + ETH_CACHE_LINE_SIZE, \ 1946 ETH_CACHE_LINE_SIZE) 1947 1948 static int 1949 qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, 1950 struct qed_rdma_start_in_params *params, 1951 struct qed_ptt *p_ptt) 1952 { 1953 struct qed_iwarp_info *iwarp_info; 1954 struct qed_ll2_acquire_data data; 1955 struct qed_ll2_cbs cbs; 1956 u16 n_ooo_bufs; 1957 int rc = 0; 1958 1959 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1960 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; 1961 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; 1962 1963 iwarp_info->max_mtu = params->max_mtu; 1964 1965 ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr); 1966 1967 rc = qed_llh_add_mac_filter(p_hwfn, p_ptt, params->mac_addr); 1968 if (rc) 1969 return rc; 1970 1971 /* Start SYN connection */ 1972 cbs.rx_comp_cb = qed_iwarp_ll2_comp_syn_pkt; 1973 cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt; 1974 cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt; 1975 cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt; 1976 cbs.cookie = p_hwfn; 1977 1978 memset(&data, 0, sizeof(data)); 1979 data.input.conn_type = QED_LL2_TYPE_IWARP; 1980 data.input.mtu = QED_IWARP_MAX_SYN_PKT_SIZE; 1981 data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE; 1982 data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE; 1983 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */ 1984 data.input.tx_tc = PKT_LB_TC; 1985 data.input.tx_dest = QED_LL2_TX_DEST_LB; 1986 data.p_connection_handle = &iwarp_info->ll2_syn_handle; 1987 data.cbs = &cbs; 1988 1989 rc = qed_ll2_acquire_connection(p_hwfn, &data); 1990 if (rc) { 1991 DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n"); 1992 qed_llh_remove_mac_filter(p_hwfn, p_ptt, params->mac_addr); 1993 return rc; 1994 } 1995 1996 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle); 1997 if (rc) { 1998 DP_NOTICE(p_hwfn, "Failed to establish LL2 connection\n"); 1999 goto err; 2000 } 2001 2002 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn, 2003 QED_IWARP_LL2_SYN_RX_SIZE, 2004 QED_IWARP_MAX_SYN_PKT_SIZE, 2005 iwarp_info->ll2_syn_handle); 2006 if (rc) 2007 goto err; 2008 2009 /* Start OOO connection */ 2010 data.input.conn_type = QED_LL2_TYPE_OOO; 2011 data.input.mtu = params->max_mtu; 2012 2013 n_ooo_bufs = (QED_IWARP_MAX_OOO * QED_IWARP_RCV_WND_SIZE_DEF) / 2014 iwarp_info->max_mtu; 2015 n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE); 2016 2017 data.input.rx_num_desc = n_ooo_bufs; 2018 data.input.rx_num_ooo_buffers = n_ooo_bufs; 2019 2020 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */ 2021 data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE; 2022 data.p_connection_handle = &iwarp_info->ll2_ooo_handle; 2023 2024 rc = qed_ll2_acquire_connection(p_hwfn, &data); 2025 if (rc) 2026 goto err; 2027 2028 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle); 2029 if (rc) 2030 goto err; 2031 2032 return rc; 2033 err: 2034 qed_iwarp_ll2_stop(p_hwfn, p_ptt); 2035 2036 return rc; 2037 } 2038 2039 int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, 2040 struct qed_rdma_start_in_params *params) 2041 { 2042 struct qed_iwarp_info *iwarp_info; 2043 u32 rcv_wnd_size; 2044 2045 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2046 2047 iwarp_info->tcp_flags = QED_IWARP_TS_EN; 2048 rcv_wnd_size = QED_IWARP_RCV_WND_SIZE_DEF; 2049 2050 /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */ 2051 iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) - 2052 ilog2(QED_IWARP_RCV_WND_SIZE_MIN); 2053 iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED; 2054 iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED; 2055 2056 iwarp_info->peer2peer = QED_IWARP_PARAM_P2P; 2057 2058 iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND | 2059 MPA_RTR_TYPE_ZERO_WRITE | 2060 MPA_RTR_TYPE_ZERO_READ; 2061 2062 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock); 2063 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list); 2064 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list); 2065 2066 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP, 2067 qed_iwarp_async_event); 2068 qed_ooo_setup(p_hwfn); 2069 2070 return qed_iwarp_ll2_start(p_hwfn, params, p_ptt); 2071 } 2072 2073 int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 2074 { 2075 int rc; 2076 2077 qed_iwarp_free_prealloc_ep(p_hwfn); 2078 rc = qed_iwarp_wait_for_all_cids(p_hwfn); 2079 if (rc) 2080 return rc; 2081 2082 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP); 2083 2084 return qed_iwarp_ll2_stop(p_hwfn, p_ptt); 2085 } 2086 2087 void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn, 2088 struct qed_iwarp_ep *ep, u8 fw_return_code) 2089 { 2090 struct qed_iwarp_cm_event_params params; 2091 2092 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_ERROR, true); 2093 2094 params.event = QED_IWARP_EVENT_CLOSE; 2095 params.ep_context = ep; 2096 params.cm_info = &ep->cm_info; 2097 params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ? 2098 0 : -ECONNRESET; 2099 2100 ep->state = QED_IWARP_EP_CLOSED; 2101 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2102 list_del(&ep->list_entry); 2103 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2104 2105 ep->event_cb(ep->cb_context, ¶ms); 2106 } 2107 2108 void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn, 2109 struct qed_iwarp_ep *ep, int fw_ret_code) 2110 { 2111 struct qed_iwarp_cm_event_params params; 2112 bool event_cb = false; 2113 2114 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n", 2115 ep->cid, fw_ret_code); 2116 2117 switch (fw_ret_code) { 2118 case IWARP_EXCEPTION_DETECTED_LLP_CLOSED: 2119 params.status = 0; 2120 params.event = QED_IWARP_EVENT_DISCONNECT; 2121 event_cb = true; 2122 break; 2123 case IWARP_EXCEPTION_DETECTED_LLP_RESET: 2124 params.status = -ECONNRESET; 2125 params.event = QED_IWARP_EVENT_DISCONNECT; 2126 event_cb = true; 2127 break; 2128 case IWARP_EXCEPTION_DETECTED_RQ_EMPTY: 2129 params.event = QED_IWARP_EVENT_RQ_EMPTY; 2130 event_cb = true; 2131 break; 2132 case IWARP_EXCEPTION_DETECTED_IRQ_FULL: 2133 params.event = QED_IWARP_EVENT_IRQ_FULL; 2134 event_cb = true; 2135 break; 2136 case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT: 2137 params.event = QED_IWARP_EVENT_LLP_TIMEOUT; 2138 event_cb = true; 2139 break; 2140 case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR: 2141 params.event = QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR; 2142 event_cb = true; 2143 break; 2144 case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW: 2145 params.event = QED_IWARP_EVENT_CQ_OVERFLOW; 2146 event_cb = true; 2147 break; 2148 case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC: 2149 params.event = QED_IWARP_EVENT_QP_CATASTROPHIC; 2150 event_cb = true; 2151 break; 2152 case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR: 2153 params.event = QED_IWARP_EVENT_LOCAL_ACCESS_ERROR; 2154 event_cb = true; 2155 break; 2156 case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR: 2157 params.event = QED_IWARP_EVENT_REMOTE_OPERATION_ERROR; 2158 event_cb = true; 2159 break; 2160 case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED: 2161 params.event = QED_IWARP_EVENT_TERMINATE_RECEIVED; 2162 event_cb = true; 2163 break; 2164 default: 2165 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2166 "Unhandled exception received...fw_ret_code=%d\n", 2167 fw_ret_code); 2168 break; 2169 } 2170 2171 if (event_cb) { 2172 params.ep_context = ep; 2173 params.cm_info = &ep->cm_info; 2174 ep->event_cb(ep->cb_context, ¶ms); 2175 } 2176 } 2177 2178 static void 2179 qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn, 2180 struct qed_iwarp_ep *ep, u8 fw_return_code) 2181 { 2182 struct qed_iwarp_cm_event_params params; 2183 2184 memset(¶ms, 0, sizeof(params)); 2185 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE; 2186 params.ep_context = ep; 2187 params.cm_info = &ep->cm_info; 2188 ep->state = QED_IWARP_EP_CLOSED; 2189 2190 switch (fw_return_code) { 2191 case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET: 2192 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2193 "%s(0x%x) TCP connect got invalid packet\n", 2194 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2195 params.status = -ECONNRESET; 2196 break; 2197 case IWARP_CONN_ERROR_TCP_CONNECTION_RST: 2198 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2199 "%s(0x%x) TCP Connection Reset\n", 2200 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2201 params.status = -ECONNRESET; 2202 break; 2203 case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT: 2204 DP_NOTICE(p_hwfn, "%s(0x%x) TCP timeout\n", 2205 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2206 params.status = -EBUSY; 2207 break; 2208 case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER: 2209 DP_NOTICE(p_hwfn, "%s(0x%x) MPA not supported VER\n", 2210 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2211 params.status = -ECONNREFUSED; 2212 break; 2213 case IWARP_CONN_ERROR_MPA_INVALID_PACKET: 2214 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n", 2215 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2216 params.status = -ECONNRESET; 2217 break; 2218 default: 2219 DP_ERR(p_hwfn, 2220 "%s(0x%x) Unexpected return code tcp connect: %d\n", 2221 QED_IWARP_CONNECT_MODE_STRING(ep), 2222 ep->tcp_cid, fw_return_code); 2223 params.status = -ECONNRESET; 2224 break; 2225 } 2226 2227 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 2228 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 2229 qed_iwarp_return_ep(p_hwfn, ep); 2230 } else { 2231 ep->event_cb(ep->cb_context, ¶ms); 2232 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2233 list_del(&ep->list_entry); 2234 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2235 } 2236 } 2237 2238 void 2239 qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn, 2240 struct qed_iwarp_ep *ep, u8 fw_return_code) 2241 { 2242 u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle; 2243 2244 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 2245 /* Done with the SYN packet, post back to ll2 rx */ 2246 qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle); 2247 2248 ep->syn = NULL; 2249 2250 /* If connect failed - upper layer doesn't know about it */ 2251 if (fw_return_code == RDMA_RETURN_OK) 2252 qed_iwarp_mpa_received(p_hwfn, ep); 2253 else 2254 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep, 2255 fw_return_code); 2256 } else { 2257 if (fw_return_code == RDMA_RETURN_OK) 2258 qed_iwarp_mpa_offload(p_hwfn, ep); 2259 else 2260 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep, 2261 fw_return_code); 2262 } 2263 } 2264 2265 static inline bool 2266 qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 2267 { 2268 if (!ep || (ep->sig != QED_EP_SIG)) { 2269 DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep); 2270 return false; 2271 } 2272 2273 return true; 2274 } 2275 2276 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, 2277 u8 fw_event_code, u16 echo, 2278 union event_ring_data *data, 2279 u8 fw_return_code) 2280 { 2281 struct regpair *fw_handle = &data->rdma_data.async_handle; 2282 struct qed_iwarp_ep *ep = NULL; 2283 u16 cid; 2284 2285 ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi, 2286 fw_handle->lo); 2287 2288 switch (fw_event_code) { 2289 case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE: 2290 /* Async completion after TCP 3-way handshake */ 2291 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 2292 return -EINVAL; 2293 DP_VERBOSE(p_hwfn, 2294 QED_MSG_RDMA, 2295 "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n", 2296 ep->tcp_cid, fw_return_code); 2297 qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code); 2298 break; 2299 case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED: 2300 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 2301 return -EINVAL; 2302 DP_VERBOSE(p_hwfn, 2303 QED_MSG_RDMA, 2304 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n", 2305 ep->cid, fw_return_code); 2306 qed_iwarp_exception_received(p_hwfn, ep, fw_return_code); 2307 break; 2308 case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE: 2309 /* Async completion for Close Connection ramrod */ 2310 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 2311 return -EINVAL; 2312 DP_VERBOSE(p_hwfn, 2313 QED_MSG_RDMA, 2314 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n", 2315 ep->cid, fw_return_code); 2316 qed_iwarp_qp_in_error(p_hwfn, ep, fw_return_code); 2317 break; 2318 case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED: 2319 /* Async event for active side only */ 2320 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 2321 return -EINVAL; 2322 DP_VERBOSE(p_hwfn, 2323 QED_MSG_RDMA, 2324 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n", 2325 ep->cid, fw_return_code); 2326 qed_iwarp_mpa_reply_arrived(p_hwfn, ep); 2327 break; 2328 case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE: 2329 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 2330 return -EINVAL; 2331 DP_VERBOSE(p_hwfn, 2332 QED_MSG_RDMA, 2333 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n", 2334 ep->cid, fw_return_code); 2335 qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code); 2336 break; 2337 case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED: 2338 cid = (u16)le32_to_cpu(fw_handle->lo); 2339 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2340 "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid); 2341 qed_iwarp_cid_cleaned(p_hwfn, cid); 2342 2343 break; 2344 case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW: 2345 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n"); 2346 2347 p_hwfn->p_rdma_info->events.affiliated_event( 2348 p_hwfn->p_rdma_info->events.context, 2349 QED_IWARP_EVENT_CQ_OVERFLOW, 2350 (void *)fw_handle); 2351 break; 2352 default: 2353 DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n", 2354 fw_event_code); 2355 return -EINVAL; 2356 } 2357 return 0; 2358 } 2359 2360 int 2361 qed_iwarp_create_listen(void *rdma_cxt, 2362 struct qed_iwarp_listen_in *iparams, 2363 struct qed_iwarp_listen_out *oparams) 2364 { 2365 struct qed_hwfn *p_hwfn = rdma_cxt; 2366 struct qed_iwarp_listener *listener; 2367 2368 listener = kzalloc(sizeof(*listener), GFP_KERNEL); 2369 if (!listener) 2370 return -ENOMEM; 2371 2372 listener->ip_version = iparams->ip_version; 2373 memcpy(listener->ip_addr, iparams->ip_addr, sizeof(listener->ip_addr)); 2374 listener->port = iparams->port; 2375 listener->vlan = iparams->vlan; 2376 2377 listener->event_cb = iparams->event_cb; 2378 listener->cb_context = iparams->cb_context; 2379 listener->max_backlog = iparams->max_backlog; 2380 oparams->handle = listener; 2381 2382 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2383 list_add_tail(&listener->list_entry, 2384 &p_hwfn->p_rdma_info->iwarp.listen_list); 2385 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2386 2387 DP_VERBOSE(p_hwfn, 2388 QED_MSG_RDMA, 2389 "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n", 2390 listener->event_cb, 2391 listener, 2392 listener->ip_addr[0], 2393 listener->ip_addr[1], 2394 listener->ip_addr[2], 2395 listener->ip_addr[3], listener->port, listener->vlan); 2396 2397 return 0; 2398 } 2399 2400 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle) 2401 { 2402 struct qed_iwarp_listener *listener = handle; 2403 struct qed_hwfn *p_hwfn = rdma_cxt; 2404 2405 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "handle=%p\n", handle); 2406 2407 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2408 list_del(&listener->list_entry); 2409 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2410 2411 kfree(listener); 2412 2413 return 0; 2414 } 2415 2416 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams) 2417 { 2418 struct qed_hwfn *p_hwfn = rdma_cxt; 2419 struct qed_sp_init_data init_data; 2420 struct qed_spq_entry *p_ent; 2421 struct qed_iwarp_ep *ep; 2422 struct qed_rdma_qp *qp; 2423 int rc; 2424 2425 ep = iparams->ep_context; 2426 if (!ep) { 2427 DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n"); 2428 return -EINVAL; 2429 } 2430 2431 qp = ep->qp; 2432 2433 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n", 2434 qp->icid, ep->tcp_cid); 2435 2436 memset(&init_data, 0, sizeof(init_data)); 2437 init_data.cid = qp->icid; 2438 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 2439 init_data.comp_mode = QED_SPQ_MODE_CB; 2440 2441 rc = qed_sp_init_request(p_hwfn, &p_ent, 2442 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR, 2443 PROTOCOLID_IWARP, &init_data); 2444 2445 if (rc) 2446 return rc; 2447 2448 rc = qed_spq_post(p_hwfn, p_ent, NULL); 2449 2450 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc); 2451 2452 return rc; 2453 } 2454 2455 void 2456 qed_iwarp_query_qp(struct qed_rdma_qp *qp, 2457 struct qed_rdma_query_qp_out_params *out_params) 2458 { 2459 out_params->state = qed_iwarp2roce_state(qp->iwarp_state); 2460 } 2461