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 67 #define QED_IWARP_RCV_WND_SIZE_DEF_BB_2P (200 * 1024) 68 #define QED_IWARP_RCV_WND_SIZE_DEF_BB_4P (100 * 1024) 69 #define QED_IWARP_RCV_WND_SIZE_DEF_AH_2P (150 * 1024) 70 #define QED_IWARP_RCV_WND_SIZE_DEF_AH_4P (90 * 1024) 71 72 #define QED_IWARP_RCV_WND_SIZE_MIN (0xffff) 73 #define TIMESTAMP_HEADER_SIZE (12) 74 #define QED_IWARP_MAX_FIN_RT_DEFAULT (2) 75 76 #define QED_IWARP_TS_EN BIT(0) 77 #define QED_IWARP_DA_EN BIT(1) 78 #define QED_IWARP_PARAM_CRC_NEEDED (1) 79 #define QED_IWARP_PARAM_P2P (1) 80 81 #define QED_IWARP_DEF_MAX_RT_TIME (0) 82 #define QED_IWARP_DEF_CWND_FACTOR (4) 83 #define QED_IWARP_DEF_KA_MAX_PROBE_CNT (5) 84 #define QED_IWARP_DEF_KA_TIMEOUT (1200000) /* 20 min */ 85 #define QED_IWARP_DEF_KA_INTERVAL (1000) /* 1 sec */ 86 87 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, 88 u8 fw_event_code, u16 echo, 89 union event_ring_data *data, 90 u8 fw_return_code); 91 92 /* Override devinfo with iWARP specific values */ 93 void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn) 94 { 95 struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev; 96 97 dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE; 98 dev->max_qp = min_t(u32, 99 IWARP_MAX_QPS, 100 p_hwfn->p_rdma_info->num_qps) - 101 QED_IWARP_PREALLOC_CNT; 102 103 dev->max_cq = dev->max_qp; 104 105 dev->max_qp_resp_rd_atomic_resc = QED_IWARP_IRD_DEFAULT; 106 dev->max_qp_req_rd_atomic_resc = QED_IWARP_ORD_DEFAULT; 107 } 108 109 void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 110 { 111 p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP; 112 qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1); 113 p_hwfn->b_rdma_enabled_in_prs = true; 114 } 115 116 /* We have two cid maps, one for tcp which should be used only from passive 117 * syn processing and replacing a pre-allocated ep in the list. The second 118 * for active tcp and for QPs. 119 */ 120 static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid) 121 { 122 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 123 124 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 125 126 if (cid < QED_IWARP_PREALLOC_CNT) 127 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 128 cid); 129 else 130 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); 131 132 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 133 } 134 135 void 136 qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn, 137 struct iwarp_init_func_ramrod_data *p_ramrod) 138 { 139 p_ramrod->iwarp.ll2_ooo_q_index = 140 RESC_START(p_hwfn, QED_LL2_RAM_QUEUE) + 141 p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle; 142 143 p_ramrod->tcp.max_fin_rt = QED_IWARP_MAX_FIN_RT_DEFAULT; 144 145 return; 146 } 147 148 static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid) 149 { 150 int rc; 151 152 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 153 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); 154 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 155 if (rc) { 156 DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n"); 157 return rc; 158 } 159 *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 160 161 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid); 162 if (rc) 163 qed_iwarp_cid_cleaned(p_hwfn, *cid); 164 165 return rc; 166 } 167 168 static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid) 169 { 170 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 171 172 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 173 qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid); 174 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 175 } 176 177 /* This function allocates a cid for passive tcp (called from syn receive) 178 * the reason it's separate from the regular cid allocation is because it 179 * is assured that these cids already have ilt allocated. They are preallocated 180 * to ensure that we won't need to allocate memory during syn processing 181 */ 182 static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid) 183 { 184 int rc; 185 186 spin_lock_bh(&p_hwfn->p_rdma_info->lock); 187 188 rc = qed_rdma_bmap_alloc_id(p_hwfn, 189 &p_hwfn->p_rdma_info->tcp_cid_map, cid); 190 191 spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 192 193 if (rc) { 194 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 195 "can't allocate iwarp tcp cid max-count=%d\n", 196 p_hwfn->p_rdma_info->tcp_cid_map.max_count); 197 198 *cid = QED_IWARP_INVALID_TCP_CID; 199 return rc; 200 } 201 202 *cid += qed_cxt_get_proto_cid_start(p_hwfn, 203 p_hwfn->p_rdma_info->proto); 204 return 0; 205 } 206 207 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, 208 struct qed_rdma_qp *qp, 209 struct qed_rdma_create_qp_out_params *out_params) 210 { 211 struct iwarp_create_qp_ramrod_data *p_ramrod; 212 struct qed_sp_init_data init_data; 213 struct qed_spq_entry *p_ent; 214 u16 physical_queue; 215 u32 cid; 216 int rc; 217 218 qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 219 IWARP_SHARED_QUEUE_PAGE_SIZE, 220 &qp->shared_queue_phys_addr, 221 GFP_KERNEL); 222 if (!qp->shared_queue) 223 return -ENOMEM; 224 225 out_params->sq_pbl_virt = (u8 *)qp->shared_queue + 226 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; 227 out_params->sq_pbl_phys = qp->shared_queue_phys_addr + 228 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; 229 out_params->rq_pbl_virt = (u8 *)qp->shared_queue + 230 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; 231 out_params->rq_pbl_phys = qp->shared_queue_phys_addr + 232 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; 233 234 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 235 if (rc) 236 goto err1; 237 238 qp->icid = (u16)cid; 239 240 memset(&init_data, 0, sizeof(init_data)); 241 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 242 init_data.cid = qp->icid; 243 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 244 245 rc = qed_sp_init_request(p_hwfn, &p_ent, 246 IWARP_RAMROD_CMD_ID_CREATE_QP, 247 PROTOCOLID_IWARP, &init_data); 248 if (rc) 249 goto err2; 250 251 p_ramrod = &p_ent->ramrod.iwarp_create_qp; 252 253 SET_FIELD(p_ramrod->flags, 254 IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN, 255 qp->fmr_and_reserved_lkey); 256 257 SET_FIELD(p_ramrod->flags, 258 IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all); 259 260 SET_FIELD(p_ramrod->flags, 261 IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN, 262 qp->incoming_rdma_read_en); 263 264 SET_FIELD(p_ramrod->flags, 265 IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN, 266 qp->incoming_rdma_write_en); 267 268 SET_FIELD(p_ramrod->flags, 269 IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN, 270 qp->incoming_atomic_en); 271 272 SET_FIELD(p_ramrod->flags, 273 IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq); 274 275 p_ramrod->pd = qp->pd; 276 p_ramrod->sq_num_pages = qp->sq_num_pages; 277 p_ramrod->rq_num_pages = qp->rq_num_pages; 278 279 p_ramrod->srq_id.srq_idx = cpu_to_le16(qp->srq_id); 280 p_ramrod->srq_id.opaque_fid = cpu_to_le16(p_hwfn->hw_info.opaque_fid); 281 p_ramrod->qp_handle_for_cqe.hi = cpu_to_le32(qp->qp_handle.hi); 282 p_ramrod->qp_handle_for_cqe.lo = cpu_to_le32(qp->qp_handle.lo); 283 284 p_ramrod->cq_cid_for_sq = 285 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id); 286 p_ramrod->cq_cid_for_rq = 287 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id); 288 289 p_ramrod->dpi = cpu_to_le16(qp->dpi); 290 291 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 292 p_ramrod->physical_q0 = cpu_to_le16(physical_queue); 293 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 294 p_ramrod->physical_q1 = cpu_to_le16(physical_queue); 295 296 rc = qed_spq_post(p_hwfn, p_ent, NULL); 297 if (rc) 298 goto err2; 299 300 return rc; 301 302 err2: 303 qed_iwarp_cid_cleaned(p_hwfn, cid); 304 err1: 305 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 306 IWARP_SHARED_QUEUE_PAGE_SIZE, 307 qp->shared_queue, qp->shared_queue_phys_addr); 308 309 return rc; 310 } 311 312 static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 313 { 314 struct iwarp_modify_qp_ramrod_data *p_ramrod; 315 struct qed_sp_init_data init_data; 316 struct qed_spq_entry *p_ent; 317 int rc; 318 319 /* Get SPQ entry */ 320 memset(&init_data, 0, sizeof(init_data)); 321 init_data.cid = qp->icid; 322 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 323 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 324 325 rc = qed_sp_init_request(p_hwfn, &p_ent, 326 IWARP_RAMROD_CMD_ID_MODIFY_QP, 327 p_hwfn->p_rdma_info->proto, &init_data); 328 if (rc) 329 return rc; 330 331 p_ramrod = &p_ent->ramrod.iwarp_modify_qp; 332 SET_FIELD(p_ramrod->flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN, 333 0x1); 334 if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING) 335 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_CLOSING; 336 else 337 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_ERROR; 338 339 rc = qed_spq_post(p_hwfn, p_ent, NULL); 340 341 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc); 342 343 return rc; 344 } 345 346 enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state) 347 { 348 switch (state) { 349 case QED_ROCE_QP_STATE_RESET: 350 case QED_ROCE_QP_STATE_INIT: 351 case QED_ROCE_QP_STATE_RTR: 352 return QED_IWARP_QP_STATE_IDLE; 353 case QED_ROCE_QP_STATE_RTS: 354 return QED_IWARP_QP_STATE_RTS; 355 case QED_ROCE_QP_STATE_SQD: 356 return QED_IWARP_QP_STATE_CLOSING; 357 case QED_ROCE_QP_STATE_ERR: 358 return QED_IWARP_QP_STATE_ERROR; 359 case QED_ROCE_QP_STATE_SQE: 360 return QED_IWARP_QP_STATE_TERMINATE; 361 default: 362 return QED_IWARP_QP_STATE_ERROR; 363 } 364 } 365 366 static enum qed_roce_qp_state 367 qed_iwarp2roce_state(enum qed_iwarp_qp_state state) 368 { 369 switch (state) { 370 case QED_IWARP_QP_STATE_IDLE: 371 return QED_ROCE_QP_STATE_INIT; 372 case QED_IWARP_QP_STATE_RTS: 373 return QED_ROCE_QP_STATE_RTS; 374 case QED_IWARP_QP_STATE_TERMINATE: 375 return QED_ROCE_QP_STATE_SQE; 376 case QED_IWARP_QP_STATE_CLOSING: 377 return QED_ROCE_QP_STATE_SQD; 378 case QED_IWARP_QP_STATE_ERROR: 379 return QED_ROCE_QP_STATE_ERR; 380 default: 381 return QED_ROCE_QP_STATE_ERR; 382 } 383 } 384 385 static const char * const iwarp_state_names[] = { 386 "IDLE", 387 "RTS", 388 "TERMINATE", 389 "CLOSING", 390 "ERROR", 391 }; 392 393 int 394 qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, 395 struct qed_rdma_qp *qp, 396 enum qed_iwarp_qp_state new_state, bool internal) 397 { 398 enum qed_iwarp_qp_state prev_iw_state; 399 bool modify_fw = false; 400 int rc = 0; 401 402 /* modify QP can be called from upper-layer or as a result of async 403 * RST/FIN... therefore need to protect 404 */ 405 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 406 prev_iw_state = qp->iwarp_state; 407 408 if (prev_iw_state == new_state) { 409 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 410 return 0; 411 } 412 413 switch (prev_iw_state) { 414 case QED_IWARP_QP_STATE_IDLE: 415 switch (new_state) { 416 case QED_IWARP_QP_STATE_RTS: 417 qp->iwarp_state = QED_IWARP_QP_STATE_RTS; 418 break; 419 case QED_IWARP_QP_STATE_ERROR: 420 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; 421 if (!internal) 422 modify_fw = true; 423 break; 424 default: 425 break; 426 } 427 break; 428 case QED_IWARP_QP_STATE_RTS: 429 switch (new_state) { 430 case QED_IWARP_QP_STATE_CLOSING: 431 if (!internal) 432 modify_fw = true; 433 434 qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING; 435 break; 436 case QED_IWARP_QP_STATE_ERROR: 437 if (!internal) 438 modify_fw = true; 439 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; 440 break; 441 default: 442 break; 443 } 444 break; 445 case QED_IWARP_QP_STATE_ERROR: 446 switch (new_state) { 447 case QED_IWARP_QP_STATE_IDLE: 448 449 qp->iwarp_state = new_state; 450 break; 451 case QED_IWARP_QP_STATE_CLOSING: 452 /* could happen due to race... do nothing.... */ 453 break; 454 default: 455 rc = -EINVAL; 456 } 457 break; 458 case QED_IWARP_QP_STATE_TERMINATE: 459 case QED_IWARP_QP_STATE_CLOSING: 460 qp->iwarp_state = new_state; 461 break; 462 default: 463 break; 464 } 465 466 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n", 467 qp->icid, 468 iwarp_state_names[prev_iw_state], 469 iwarp_state_names[qp->iwarp_state], 470 internal ? "internal" : ""); 471 472 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 473 474 if (modify_fw) 475 rc = qed_iwarp_modify_fw(p_hwfn, qp); 476 477 return rc; 478 } 479 480 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 481 { 482 struct qed_sp_init_data init_data; 483 struct qed_spq_entry *p_ent; 484 int rc; 485 486 /* Get SPQ entry */ 487 memset(&init_data, 0, sizeof(init_data)); 488 init_data.cid = qp->icid; 489 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 490 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 491 492 rc = qed_sp_init_request(p_hwfn, &p_ent, 493 IWARP_RAMROD_CMD_ID_DESTROY_QP, 494 p_hwfn->p_rdma_info->proto, &init_data); 495 if (rc) 496 return rc; 497 498 rc = qed_spq_post(p_hwfn, p_ent, NULL); 499 500 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc); 501 502 return rc; 503 } 504 505 static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn, 506 struct qed_iwarp_ep *ep, 507 bool remove_from_active_list) 508 { 509 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 510 sizeof(*ep->ep_buffer_virt), 511 ep->ep_buffer_virt, ep->ep_buffer_phys); 512 513 if (remove_from_active_list) { 514 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 515 list_del(&ep->list_entry); 516 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 517 } 518 519 if (ep->qp) 520 ep->qp->ep = NULL; 521 522 kfree(ep); 523 } 524 525 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 526 { 527 struct qed_iwarp_ep *ep = qp->ep; 528 int wait_count = 0; 529 int rc = 0; 530 531 if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) { 532 rc = qed_iwarp_modify_qp(p_hwfn, qp, 533 QED_IWARP_QP_STATE_ERROR, false); 534 if (rc) 535 return rc; 536 } 537 538 /* Make sure ep is closed before returning and freeing memory. */ 539 if (ep) { 540 while (READ_ONCE(ep->state) != QED_IWARP_EP_CLOSED && 541 wait_count++ < 200) 542 msleep(100); 543 544 if (ep->state != QED_IWARP_EP_CLOSED) 545 DP_NOTICE(p_hwfn, "ep state close timeout state=%x\n", 546 ep->state); 547 548 qed_iwarp_destroy_ep(p_hwfn, ep, false); 549 } 550 551 rc = qed_iwarp_fw_destroy(p_hwfn, qp); 552 553 if (qp->shared_queue) 554 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 555 IWARP_SHARED_QUEUE_PAGE_SIZE, 556 qp->shared_queue, qp->shared_queue_phys_addr); 557 558 return rc; 559 } 560 561 static int 562 qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out) 563 { 564 struct qed_iwarp_ep *ep; 565 int rc; 566 567 ep = kzalloc(sizeof(*ep), GFP_KERNEL); 568 if (!ep) 569 return -ENOMEM; 570 571 ep->state = QED_IWARP_EP_INIT; 572 573 ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 574 sizeof(*ep->ep_buffer_virt), 575 &ep->ep_buffer_phys, 576 GFP_KERNEL); 577 if (!ep->ep_buffer_virt) { 578 rc = -ENOMEM; 579 goto err; 580 } 581 582 ep->sig = QED_EP_SIG; 583 584 *ep_out = ep; 585 586 return 0; 587 588 err: 589 kfree(ep); 590 return rc; 591 } 592 593 static void 594 qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn, 595 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod) 596 { 597 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n", 598 p_tcp_ramrod->tcp.local_mac_addr_lo, 599 p_tcp_ramrod->tcp.local_mac_addr_mid, 600 p_tcp_ramrod->tcp.local_mac_addr_hi, 601 p_tcp_ramrod->tcp.remote_mac_addr_lo, 602 p_tcp_ramrod->tcp.remote_mac_addr_mid, 603 p_tcp_ramrod->tcp.remote_mac_addr_hi); 604 605 if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) { 606 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 607 "local_ip=%pI4h:%x, remote_ip=%pI4h:%x, vlan=%x\n", 608 p_tcp_ramrod->tcp.local_ip, 609 p_tcp_ramrod->tcp.local_port, 610 p_tcp_ramrod->tcp.remote_ip, 611 p_tcp_ramrod->tcp.remote_port, 612 p_tcp_ramrod->tcp.vlan_id); 613 } else { 614 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 615 "local_ip=%pI6:%x, remote_ip=%pI6:%x, vlan=%x\n", 616 p_tcp_ramrod->tcp.local_ip, 617 p_tcp_ramrod->tcp.local_port, 618 p_tcp_ramrod->tcp.remote_ip, 619 p_tcp_ramrod->tcp.remote_port, 620 p_tcp_ramrod->tcp.vlan_id); 621 } 622 623 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 624 "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n", 625 p_tcp_ramrod->tcp.flow_label, 626 p_tcp_ramrod->tcp.ttl, 627 p_tcp_ramrod->tcp.tos_or_tc, 628 p_tcp_ramrod->tcp.mss, 629 p_tcp_ramrod->tcp.rcv_wnd_scale, 630 p_tcp_ramrod->tcp.connect_mode, 631 p_tcp_ramrod->tcp.flags); 632 633 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n", 634 p_tcp_ramrod->tcp.syn_ip_payload_length, 635 p_tcp_ramrod->tcp.syn_phy_addr_lo, 636 p_tcp_ramrod->tcp.syn_phy_addr_hi); 637 } 638 639 static int 640 qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 641 { 642 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 643 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod; 644 struct tcp_offload_params_opt2 *tcp; 645 struct qed_sp_init_data init_data; 646 struct qed_spq_entry *p_ent; 647 dma_addr_t async_output_phys; 648 dma_addr_t in_pdata_phys; 649 u16 physical_q; 650 u8 tcp_flags; 651 int rc; 652 int i; 653 654 memset(&init_data, 0, sizeof(init_data)); 655 init_data.cid = ep->tcp_cid; 656 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 657 if (ep->connect_mode == TCP_CONNECT_PASSIVE) 658 init_data.comp_mode = QED_SPQ_MODE_CB; 659 else 660 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 661 662 rc = qed_sp_init_request(p_hwfn, &p_ent, 663 IWARP_RAMROD_CMD_ID_TCP_OFFLOAD, 664 PROTOCOLID_IWARP, &init_data); 665 if (rc) 666 return rc; 667 668 p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload; 669 670 in_pdata_phys = ep->ep_buffer_phys + 671 offsetof(struct qed_iwarp_ep_memory, in_pdata); 672 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr, 673 in_pdata_phys); 674 675 p_tcp_ramrod->iwarp.incoming_ulp_buffer.len = 676 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata)); 677 678 async_output_phys = ep->ep_buffer_phys + 679 offsetof(struct qed_iwarp_ep_memory, async_output); 680 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf, 681 async_output_phys); 682 683 p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep)); 684 p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep)); 685 686 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 687 p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q); 688 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 689 p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q); 690 p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev; 691 692 tcp = &p_tcp_ramrod->tcp; 693 qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi, 694 &tcp->remote_mac_addr_mid, 695 &tcp->remote_mac_addr_lo, ep->remote_mac_addr); 696 qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid, 697 &tcp->local_mac_addr_lo, ep->local_mac_addr); 698 699 tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan); 700 701 tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags; 702 tcp->flags = 0; 703 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN, 704 !!(tcp_flags & QED_IWARP_TS_EN)); 705 706 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN, 707 !!(tcp_flags & QED_IWARP_DA_EN)); 708 709 tcp->ip_version = ep->cm_info.ip_version; 710 711 for (i = 0; i < 4; i++) { 712 tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]); 713 tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]); 714 } 715 716 tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port); 717 tcp->local_port = cpu_to_le16(ep->cm_info.local_port); 718 tcp->mss = cpu_to_le16(ep->mss); 719 tcp->flow_label = 0; 720 tcp->ttl = 0x40; 721 tcp->tos_or_tc = 0; 722 723 tcp->max_rt_time = QED_IWARP_DEF_MAX_RT_TIME; 724 tcp->cwnd = QED_IWARP_DEF_CWND_FACTOR * tcp->mss; 725 tcp->ka_max_probe_cnt = QED_IWARP_DEF_KA_MAX_PROBE_CNT; 726 tcp->ka_timeout = QED_IWARP_DEF_KA_TIMEOUT; 727 tcp->ka_interval = QED_IWARP_DEF_KA_INTERVAL; 728 729 tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale; 730 tcp->connect_mode = ep->connect_mode; 731 732 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 733 tcp->syn_ip_payload_length = 734 cpu_to_le16(ep->syn_ip_payload_length); 735 tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr); 736 tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr); 737 } 738 739 qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod); 740 741 rc = qed_spq_post(p_hwfn, p_ent, NULL); 742 743 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 744 "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc); 745 746 return rc; 747 } 748 749 static void 750 qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 751 { 752 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 753 struct qed_iwarp_cm_event_params params; 754 struct mpa_v2_hdr *mpa_v2; 755 union async_output *async_data; 756 u16 mpa_ord, mpa_ird; 757 u8 mpa_hdr_size = 0; 758 u8 mpa_rev; 759 760 async_data = &ep->ep_buffer_virt->async_output; 761 762 mpa_rev = async_data->mpa_request.mpa_handshake_mode; 763 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 764 "private_data_len=%x handshake_mode=%x private_data=(%x)\n", 765 async_data->mpa_request.ulp_data_len, 766 mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata))); 767 768 if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) { 769 /* Read ord/ird values from private data buffer */ 770 mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata; 771 mpa_hdr_size = sizeof(*mpa_v2); 772 773 mpa_ord = ntohs(mpa_v2->ord); 774 mpa_ird = ntohs(mpa_v2->ird); 775 776 /* Temprary store in cm_info incoming ord/ird requested, later 777 * replace with negotiated value during accept 778 */ 779 ep->cm_info.ord = (u8)min_t(u16, 780 (mpa_ord & MPA_V2_IRD_ORD_MASK), 781 QED_IWARP_ORD_DEFAULT); 782 783 ep->cm_info.ird = (u8)min_t(u16, 784 (mpa_ird & MPA_V2_IRD_ORD_MASK), 785 QED_IWARP_IRD_DEFAULT); 786 787 /* Peer2Peer negotiation */ 788 ep->rtr_type = MPA_RTR_TYPE_NONE; 789 if (mpa_ird & MPA_V2_PEER2PEER_MODEL) { 790 if (mpa_ord & MPA_V2_WRITE_RTR) 791 ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE; 792 793 if (mpa_ord & MPA_V2_READ_RTR) 794 ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ; 795 796 if (mpa_ird & MPA_V2_SEND_RTR) 797 ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND; 798 799 ep->rtr_type &= iwarp_info->rtr_type; 800 801 /* if we're left with no match send our capabilities */ 802 if (ep->rtr_type == MPA_RTR_TYPE_NONE) 803 ep->rtr_type = iwarp_info->rtr_type; 804 } 805 806 ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED; 807 } else { 808 ep->cm_info.ord = QED_IWARP_ORD_DEFAULT; 809 ep->cm_info.ird = QED_IWARP_IRD_DEFAULT; 810 ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC; 811 } 812 813 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 814 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n", 815 mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type, 816 async_data->mpa_request.ulp_data_len, mpa_hdr_size); 817 818 /* Strip mpa v2 hdr from private data before sending to upper layer */ 819 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size; 820 821 ep->cm_info.private_data_len = async_data->mpa_request.ulp_data_len - 822 mpa_hdr_size; 823 824 params.event = QED_IWARP_EVENT_MPA_REQUEST; 825 params.cm_info = &ep->cm_info; 826 params.ep_context = ep; 827 params.status = 0; 828 829 ep->state = QED_IWARP_EP_MPA_REQ_RCVD; 830 ep->event_cb(ep->cb_context, ¶ms); 831 } 832 833 static int 834 qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 835 { 836 struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod; 837 struct qed_iwarp_info *iwarp_info; 838 struct qed_sp_init_data init_data; 839 dma_addr_t async_output_phys; 840 struct qed_spq_entry *p_ent; 841 dma_addr_t out_pdata_phys; 842 dma_addr_t in_pdata_phys; 843 struct qed_rdma_qp *qp; 844 bool reject; 845 int rc; 846 847 if (!ep) 848 return -EINVAL; 849 850 qp = ep->qp; 851 reject = !qp; 852 853 memset(&init_data, 0, sizeof(init_data)); 854 init_data.cid = reject ? ep->tcp_cid : qp->icid; 855 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 856 857 if (ep->connect_mode == TCP_CONNECT_ACTIVE) 858 init_data.comp_mode = QED_SPQ_MODE_CB; 859 else 860 init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 861 862 rc = qed_sp_init_request(p_hwfn, &p_ent, 863 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD, 864 PROTOCOLID_IWARP, &init_data); 865 if (rc) 866 return rc; 867 868 p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload; 869 out_pdata_phys = ep->ep_buffer_phys + 870 offsetof(struct qed_iwarp_ep_memory, out_pdata); 871 DMA_REGPAIR_LE(p_mpa_ramrod->common.outgoing_ulp_buffer.addr, 872 out_pdata_phys); 873 p_mpa_ramrod->common.outgoing_ulp_buffer.len = 874 ep->cm_info.private_data_len; 875 p_mpa_ramrod->common.crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed; 876 877 p_mpa_ramrod->common.out_rq.ord = ep->cm_info.ord; 878 p_mpa_ramrod->common.out_rq.ird = ep->cm_info.ird; 879 880 p_mpa_ramrod->tcp_cid = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid; 881 882 in_pdata_phys = ep->ep_buffer_phys + 883 offsetof(struct qed_iwarp_ep_memory, in_pdata); 884 p_mpa_ramrod->tcp_connect_side = ep->connect_mode; 885 DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr, 886 in_pdata_phys); 887 p_mpa_ramrod->incoming_ulp_buffer.len = 888 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata)); 889 async_output_phys = ep->ep_buffer_phys + 890 offsetof(struct qed_iwarp_ep_memory, async_output); 891 DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf, 892 async_output_phys); 893 p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep)); 894 p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep)); 895 896 if (!reject) { 897 DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr, 898 qp->shared_queue_phys_addr); 899 p_mpa_ramrod->stats_counter_id = 900 RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue; 901 } else { 902 p_mpa_ramrod->common.reject = 1; 903 } 904 905 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 906 p_mpa_ramrod->rcv_wnd = iwarp_info->rcv_wnd_size; 907 p_mpa_ramrod->mode = ep->mpa_rev; 908 SET_FIELD(p_mpa_ramrod->rtr_pref, 909 IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type); 910 911 ep->state = QED_IWARP_EP_MPA_OFFLOADED; 912 rc = qed_spq_post(p_hwfn, p_ent, NULL); 913 if (!reject) 914 ep->cid = qp->icid; /* Now they're migrated. */ 915 916 DP_VERBOSE(p_hwfn, 917 QED_MSG_RDMA, 918 "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", 919 reject ? 0xffff : qp->icid, 920 ep->tcp_cid, 921 rc, 922 ep->cm_info.ird, 923 ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject); 924 return rc; 925 } 926 927 static void 928 qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 929 { 930 ep->state = QED_IWARP_EP_INIT; 931 if (ep->qp) 932 ep->qp->ep = NULL; 933 ep->qp = NULL; 934 memset(&ep->cm_info, 0, sizeof(ep->cm_info)); 935 936 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) { 937 /* We don't care about the return code, it's ok if tcp_cid 938 * remains invalid...in this case we'll defer allocation 939 */ 940 qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid); 941 } 942 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 943 944 list_move_tail(&ep->list_entry, 945 &p_hwfn->p_rdma_info->iwarp.ep_free_list); 946 947 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 948 } 949 950 static void 951 qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 952 { 953 struct mpa_v2_hdr *mpa_v2_params; 954 union async_output *async_data; 955 u16 mpa_ird, mpa_ord; 956 u8 mpa_data_size = 0; 957 958 if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) { 959 mpa_v2_params = 960 (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata); 961 mpa_data_size = sizeof(*mpa_v2_params); 962 mpa_ird = ntohs(mpa_v2_params->ird); 963 mpa_ord = ntohs(mpa_v2_params->ord); 964 965 ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK); 966 ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK); 967 } 968 async_data = &ep->ep_buffer_virt->async_output; 969 970 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size; 971 ep->cm_info.private_data_len = async_data->mpa_response.ulp_data_len - 972 mpa_data_size; 973 } 974 975 static void 976 qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 977 { 978 struct qed_iwarp_cm_event_params params; 979 980 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 981 DP_NOTICE(p_hwfn, 982 "MPA reply event not expected on passive side!\n"); 983 return; 984 } 985 986 params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY; 987 988 qed_iwarp_parse_private_data(p_hwfn, ep); 989 990 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 991 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 992 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 993 994 params.cm_info = &ep->cm_info; 995 params.ep_context = ep; 996 params.status = 0; 997 998 ep->mpa_reply_processed = true; 999 1000 ep->event_cb(ep->cb_context, ¶ms); 1001 } 1002 1003 #define QED_IWARP_CONNECT_MODE_STRING(ep) \ 1004 ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active" 1005 1006 /* Called as a result of the event: 1007 * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE 1008 */ 1009 static void 1010 qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn, 1011 struct qed_iwarp_ep *ep, u8 fw_return_code) 1012 { 1013 struct qed_iwarp_cm_event_params params; 1014 1015 if (ep->connect_mode == TCP_CONNECT_ACTIVE) 1016 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE; 1017 else 1018 params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE; 1019 1020 if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed) 1021 qed_iwarp_parse_private_data(p_hwfn, ep); 1022 1023 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1024 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 1025 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 1026 1027 params.cm_info = &ep->cm_info; 1028 1029 params.ep_context = ep; 1030 1031 switch (fw_return_code) { 1032 case RDMA_RETURN_OK: 1033 ep->qp->max_rd_atomic_req = ep->cm_info.ord; 1034 ep->qp->max_rd_atomic_resp = ep->cm_info.ird; 1035 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1); 1036 ep->state = QED_IWARP_EP_ESTABLISHED; 1037 params.status = 0; 1038 break; 1039 case IWARP_CONN_ERROR_MPA_TIMEOUT: 1040 DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n", 1041 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1042 params.status = -EBUSY; 1043 break; 1044 case IWARP_CONN_ERROR_MPA_ERROR_REJECT: 1045 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n", 1046 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1047 params.status = -ECONNREFUSED; 1048 break; 1049 case IWARP_CONN_ERROR_MPA_RST: 1050 DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n", 1051 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid, 1052 ep->tcp_cid); 1053 params.status = -ECONNRESET; 1054 break; 1055 case IWARP_CONN_ERROR_MPA_FIN: 1056 DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n", 1057 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1058 params.status = -ECONNREFUSED; 1059 break; 1060 case IWARP_CONN_ERROR_MPA_INSUF_IRD: 1061 DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n", 1062 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1063 params.status = -ECONNREFUSED; 1064 break; 1065 case IWARP_CONN_ERROR_MPA_RTR_MISMATCH: 1066 DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n", 1067 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1068 params.status = -ECONNREFUSED; 1069 break; 1070 case IWARP_CONN_ERROR_MPA_INVALID_PACKET: 1071 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n", 1072 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1073 params.status = -ECONNREFUSED; 1074 break; 1075 case IWARP_CONN_ERROR_MPA_LOCAL_ERROR: 1076 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n", 1077 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1078 params.status = -ECONNREFUSED; 1079 break; 1080 case IWARP_CONN_ERROR_MPA_TERMINATE: 1081 DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n", 1082 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 1083 params.status = -ECONNREFUSED; 1084 break; 1085 default: 1086 params.status = -ECONNRESET; 1087 break; 1088 } 1089 1090 if (fw_return_code != RDMA_RETURN_OK) 1091 /* paired with READ_ONCE in destroy_qp */ 1092 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED); 1093 1094 ep->event_cb(ep->cb_context, ¶ms); 1095 1096 /* on passive side, if there is no associated QP (REJECT) we need to 1097 * return the ep to the pool, (in the regular case we add an element 1098 * in accept instead of this one. 1099 * In both cases we need to remove it from the ep_list. 1100 */ 1101 if (fw_return_code != RDMA_RETURN_OK) { 1102 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 1103 if ((ep->connect_mode == TCP_CONNECT_PASSIVE) && 1104 (!ep->qp)) { /* Rejected */ 1105 qed_iwarp_return_ep(p_hwfn, ep); 1106 } else { 1107 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1108 list_del(&ep->list_entry); 1109 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1110 } 1111 } 1112 } 1113 1114 static void 1115 qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn, 1116 struct qed_iwarp_ep *ep, u8 *mpa_data_size) 1117 { 1118 struct mpa_v2_hdr *mpa_v2_params; 1119 u16 mpa_ird, mpa_ord; 1120 1121 *mpa_data_size = 0; 1122 if (MPA_REV2(ep->mpa_rev)) { 1123 mpa_v2_params = 1124 (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata; 1125 *mpa_data_size = sizeof(*mpa_v2_params); 1126 1127 mpa_ird = (u16)ep->cm_info.ird; 1128 mpa_ord = (u16)ep->cm_info.ord; 1129 1130 if (ep->rtr_type != MPA_RTR_TYPE_NONE) { 1131 mpa_ird |= MPA_V2_PEER2PEER_MODEL; 1132 1133 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND) 1134 mpa_ird |= MPA_V2_SEND_RTR; 1135 1136 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE) 1137 mpa_ord |= MPA_V2_WRITE_RTR; 1138 1139 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) 1140 mpa_ord |= MPA_V2_READ_RTR; 1141 } 1142 1143 mpa_v2_params->ird = htons(mpa_ird); 1144 mpa_v2_params->ord = htons(mpa_ord); 1145 1146 DP_VERBOSE(p_hwfn, 1147 QED_MSG_RDMA, 1148 "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n", 1149 mpa_v2_params->ird, 1150 mpa_v2_params->ord, 1151 *((u32 *)mpa_v2_params), 1152 mpa_ord & MPA_V2_IRD_ORD_MASK, 1153 mpa_ird & MPA_V2_IRD_ORD_MASK, 1154 !!(mpa_ird & MPA_V2_PEER2PEER_MODEL), 1155 !!(mpa_ird & MPA_V2_SEND_RTR), 1156 !!(mpa_ord & MPA_V2_WRITE_RTR), 1157 !!(mpa_ord & MPA_V2_READ_RTR)); 1158 } 1159 } 1160 1161 int qed_iwarp_connect(void *rdma_cxt, 1162 struct qed_iwarp_connect_in *iparams, 1163 struct qed_iwarp_connect_out *oparams) 1164 { 1165 struct qed_hwfn *p_hwfn = rdma_cxt; 1166 struct qed_iwarp_info *iwarp_info; 1167 struct qed_iwarp_ep *ep; 1168 u8 mpa_data_size = 0; 1169 u32 cid; 1170 int rc; 1171 1172 if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) || 1173 (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) { 1174 DP_NOTICE(p_hwfn, 1175 "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n", 1176 iparams->qp->icid, iparams->cm_info.ord, 1177 iparams->cm_info.ird); 1178 1179 return -EINVAL; 1180 } 1181 1182 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1183 1184 /* Allocate ep object */ 1185 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 1186 if (rc) 1187 return rc; 1188 1189 rc = qed_iwarp_create_ep(p_hwfn, &ep); 1190 if (rc) 1191 goto err; 1192 1193 ep->tcp_cid = cid; 1194 1195 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1196 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list); 1197 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1198 1199 ep->qp = iparams->qp; 1200 ep->qp->ep = ep; 1201 ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr); 1202 ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr); 1203 memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info)); 1204 1205 ep->cm_info.ord = iparams->cm_info.ord; 1206 ep->cm_info.ird = iparams->cm_info.ird; 1207 1208 ep->rtr_type = iwarp_info->rtr_type; 1209 if (!iwarp_info->peer2peer) 1210 ep->rtr_type = MPA_RTR_TYPE_NONE; 1211 1212 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0)) 1213 ep->cm_info.ord = 1; 1214 1215 ep->mpa_rev = iwarp_info->mpa_rev; 1216 1217 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1218 1219 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1220 ep->cm_info.private_data_len = iparams->cm_info.private_data_len + 1221 mpa_data_size; 1222 1223 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1224 iparams->cm_info.private_data, 1225 iparams->cm_info.private_data_len); 1226 1227 ep->mss = iparams->mss; 1228 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss); 1229 1230 ep->event_cb = iparams->event_cb; 1231 ep->cb_context = iparams->cb_context; 1232 ep->connect_mode = TCP_CONNECT_ACTIVE; 1233 1234 oparams->ep_context = ep; 1235 1236 rc = qed_iwarp_tcp_offload(p_hwfn, ep); 1237 1238 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n", 1239 iparams->qp->icid, ep->tcp_cid, rc); 1240 1241 if (rc) { 1242 qed_iwarp_destroy_ep(p_hwfn, ep, true); 1243 goto err; 1244 } 1245 1246 return rc; 1247 err: 1248 qed_iwarp_cid_cleaned(p_hwfn, cid); 1249 1250 return rc; 1251 } 1252 1253 static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn) 1254 { 1255 struct qed_iwarp_ep *ep = NULL; 1256 int rc; 1257 1258 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1259 1260 if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) { 1261 DP_ERR(p_hwfn, "Ep list is empty\n"); 1262 goto out; 1263 } 1264 1265 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list, 1266 struct qed_iwarp_ep, list_entry); 1267 1268 /* in some cases we could have failed allocating a tcp cid when added 1269 * from accept / failure... retry now..this is not the common case. 1270 */ 1271 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) { 1272 rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid); 1273 1274 /* if we fail we could look for another entry with a valid 1275 * tcp_cid, but since we don't expect to reach this anyway 1276 * it's not worth the handling 1277 */ 1278 if (rc) { 1279 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 1280 ep = NULL; 1281 goto out; 1282 } 1283 } 1284 1285 list_del(&ep->list_entry); 1286 1287 out: 1288 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1289 return ep; 1290 } 1291 1292 #define QED_IWARP_MAX_CID_CLEAN_TIME 100 1293 #define QED_IWARP_MAX_NO_PROGRESS_CNT 5 1294 1295 /* This function waits for all the bits of a bmap to be cleared, as long as 1296 * there is progress ( i.e. the number of bits left to be cleared decreases ) 1297 * the function continues. 1298 */ 1299 static int 1300 qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap) 1301 { 1302 int prev_weight = 0; 1303 int wait_count = 0; 1304 int weight = 0; 1305 1306 weight = bitmap_weight(bmap->bitmap, bmap->max_count); 1307 prev_weight = weight; 1308 1309 while (weight) { 1310 msleep(QED_IWARP_MAX_CID_CLEAN_TIME); 1311 1312 weight = bitmap_weight(bmap->bitmap, bmap->max_count); 1313 1314 if (prev_weight == weight) { 1315 wait_count++; 1316 } else { 1317 prev_weight = weight; 1318 wait_count = 0; 1319 } 1320 1321 if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) { 1322 DP_NOTICE(p_hwfn, 1323 "%s bitmap wait timed out (%d cids pending)\n", 1324 bmap->name, weight); 1325 return -EBUSY; 1326 } 1327 } 1328 return 0; 1329 } 1330 1331 static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn) 1332 { 1333 int rc; 1334 int i; 1335 1336 rc = qed_iwarp_wait_cid_map_cleared(p_hwfn, 1337 &p_hwfn->p_rdma_info->tcp_cid_map); 1338 if (rc) 1339 return rc; 1340 1341 /* Now free the tcp cids from the main cid map */ 1342 for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++) 1343 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i); 1344 1345 /* Now wait for all cids to be completed */ 1346 return qed_iwarp_wait_cid_map_cleared(p_hwfn, 1347 &p_hwfn->p_rdma_info->cid_map); 1348 } 1349 1350 static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn) 1351 { 1352 struct qed_iwarp_ep *ep; 1353 1354 while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) { 1355 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1356 1357 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list, 1358 struct qed_iwarp_ep, list_entry); 1359 1360 if (!ep) { 1361 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1362 break; 1363 } 1364 list_del(&ep->list_entry); 1365 1366 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1367 1368 if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID) 1369 qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid); 1370 1371 qed_iwarp_destroy_ep(p_hwfn, ep, false); 1372 } 1373 } 1374 1375 static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init) 1376 { 1377 struct qed_iwarp_ep *ep; 1378 int rc = 0; 1379 int count; 1380 u32 cid; 1381 int i; 1382 1383 count = init ? QED_IWARP_PREALLOC_CNT : 1; 1384 for (i = 0; i < count; i++) { 1385 rc = qed_iwarp_create_ep(p_hwfn, &ep); 1386 if (rc) 1387 return rc; 1388 1389 /* During initialization we allocate from the main pool, 1390 * afterwards we allocate only from the tcp_cid. 1391 */ 1392 if (init) { 1393 rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 1394 if (rc) 1395 goto err; 1396 qed_iwarp_set_tcp_cid(p_hwfn, cid); 1397 } else { 1398 /* We don't care about the return code, it's ok if 1399 * tcp_cid remains invalid...in this case we'll 1400 * defer allocation 1401 */ 1402 qed_iwarp_alloc_tcp_cid(p_hwfn, &cid); 1403 } 1404 1405 ep->tcp_cid = cid; 1406 1407 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1408 list_add_tail(&ep->list_entry, 1409 &p_hwfn->p_rdma_info->iwarp.ep_free_list); 1410 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1411 } 1412 1413 return rc; 1414 1415 err: 1416 qed_iwarp_destroy_ep(p_hwfn, ep, false); 1417 1418 return rc; 1419 } 1420 1421 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn) 1422 { 1423 int rc; 1424 1425 /* Allocate bitmap for tcp cid. These are used by passive side 1426 * to ensure it can allocate a tcp cid during dpc that was 1427 * pre-acquired and doesn't require dynamic allocation of ilt 1428 */ 1429 rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1430 QED_IWARP_PREALLOC_CNT, "TCP_CID"); 1431 if (rc) { 1432 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1433 "Failed to allocate tcp cid, rc = %d\n", rc); 1434 return rc; 1435 } 1436 1437 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list); 1438 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1439 1440 rc = qed_iwarp_prealloc_ep(p_hwfn, true); 1441 if (rc) 1442 return rc; 1443 1444 return qed_ooo_alloc(p_hwfn); 1445 } 1446 1447 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn) 1448 { 1449 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1450 1451 qed_ooo_free(p_hwfn); 1452 qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1); 1453 kfree(iwarp_info->mpa_bufs); 1454 kfree(iwarp_info->partial_fpdus); 1455 kfree(iwarp_info->mpa_intermediate_buf); 1456 } 1457 1458 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams) 1459 { 1460 struct qed_hwfn *p_hwfn = rdma_cxt; 1461 struct qed_iwarp_ep *ep; 1462 u8 mpa_data_size = 0; 1463 int rc; 1464 1465 ep = iparams->ep_context; 1466 if (!ep) { 1467 DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n"); 1468 return -EINVAL; 1469 } 1470 1471 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n", 1472 iparams->qp->icid, ep->tcp_cid); 1473 1474 if ((iparams->ord > QED_IWARP_ORD_DEFAULT) || 1475 (iparams->ird > QED_IWARP_IRD_DEFAULT)) { 1476 DP_VERBOSE(p_hwfn, 1477 QED_MSG_RDMA, 1478 "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n", 1479 iparams->qp->icid, 1480 ep->tcp_cid, iparams->ord, iparams->ord); 1481 return -EINVAL; 1482 } 1483 1484 qed_iwarp_prealloc_ep(p_hwfn, false); 1485 1486 ep->cb_context = iparams->cb_context; 1487 ep->qp = iparams->qp; 1488 ep->qp->ep = ep; 1489 1490 if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) { 1491 /* Negotiate ord/ird: if upperlayer requested ord larger than 1492 * ird advertised by remote, we need to decrease our ord 1493 */ 1494 if (iparams->ord > ep->cm_info.ird) 1495 iparams->ord = ep->cm_info.ird; 1496 1497 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && 1498 (iparams->ird == 0)) 1499 iparams->ird = 1; 1500 } 1501 1502 /* Update cm_info ord/ird to be negotiated values */ 1503 ep->cm_info.ord = iparams->ord; 1504 ep->cm_info.ird = iparams->ird; 1505 1506 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1507 1508 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1509 ep->cm_info.private_data_len = iparams->private_data_len + 1510 mpa_data_size; 1511 1512 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1513 iparams->private_data, iparams->private_data_len); 1514 1515 rc = qed_iwarp_mpa_offload(p_hwfn, ep); 1516 if (rc) 1517 qed_iwarp_modify_qp(p_hwfn, 1518 iparams->qp, QED_IWARP_QP_STATE_ERROR, 1); 1519 1520 return rc; 1521 } 1522 1523 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams) 1524 { 1525 struct qed_hwfn *p_hwfn = rdma_cxt; 1526 struct qed_iwarp_ep *ep; 1527 u8 mpa_data_size = 0; 1528 1529 ep = iparams->ep_context; 1530 if (!ep) { 1531 DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n"); 1532 return -EINVAL; 1533 } 1534 1535 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid); 1536 1537 ep->cb_context = iparams->cb_context; 1538 ep->qp = NULL; 1539 1540 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1541 1542 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1543 ep->cm_info.private_data_len = iparams->private_data_len + 1544 mpa_data_size; 1545 1546 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1547 iparams->private_data, iparams->private_data_len); 1548 1549 return qed_iwarp_mpa_offload(p_hwfn, ep); 1550 } 1551 1552 static void 1553 qed_iwarp_print_cm_info(struct qed_hwfn *p_hwfn, 1554 struct qed_iwarp_cm_info *cm_info) 1555 { 1556 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "ip_version = %d\n", 1557 cm_info->ip_version); 1558 1559 if (cm_info->ip_version == QED_TCP_IPV4) 1560 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1561 "remote_ip %pI4h:%x, local_ip %pI4h:%x vlan=%x\n", 1562 cm_info->remote_ip, cm_info->remote_port, 1563 cm_info->local_ip, cm_info->local_port, 1564 cm_info->vlan); 1565 else 1566 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1567 "remote_ip %pI6:%x, local_ip %pI6:%x vlan=%x\n", 1568 cm_info->remote_ip, cm_info->remote_port, 1569 cm_info->local_ip, cm_info->local_port, 1570 cm_info->vlan); 1571 1572 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1573 "private_data_len = %x ord = %d, ird = %d\n", 1574 cm_info->private_data_len, cm_info->ord, cm_info->ird); 1575 } 1576 1577 static int 1578 qed_iwarp_ll2_post_rx(struct qed_hwfn *p_hwfn, 1579 struct qed_iwarp_ll2_buff *buf, u8 handle) 1580 { 1581 int rc; 1582 1583 rc = qed_ll2_post_rx_buffer(p_hwfn, handle, buf->data_phys_addr, 1584 (u16)buf->buff_size, buf, 1); 1585 if (rc) { 1586 DP_NOTICE(p_hwfn, 1587 "Failed to repost rx buffer to ll2 rc = %d, handle=%d\n", 1588 rc, handle); 1589 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buf->buff_size, 1590 buf->data, buf->data_phys_addr); 1591 kfree(buf); 1592 } 1593 1594 return rc; 1595 } 1596 1597 static bool 1598 qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info) 1599 { 1600 struct qed_iwarp_ep *ep = NULL; 1601 bool found = false; 1602 1603 list_for_each_entry(ep, 1604 &p_hwfn->p_rdma_info->iwarp.ep_list, 1605 list_entry) { 1606 if ((ep->cm_info.local_port == cm_info->local_port) && 1607 (ep->cm_info.remote_port == cm_info->remote_port) && 1608 (ep->cm_info.vlan == cm_info->vlan) && 1609 !memcmp(&ep->cm_info.local_ip, cm_info->local_ip, 1610 sizeof(cm_info->local_ip)) && 1611 !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip, 1612 sizeof(cm_info->remote_ip))) { 1613 found = true; 1614 break; 1615 } 1616 } 1617 1618 if (found) { 1619 DP_NOTICE(p_hwfn, 1620 "SYN received on active connection - dropping\n"); 1621 qed_iwarp_print_cm_info(p_hwfn, cm_info); 1622 1623 return true; 1624 } 1625 1626 return false; 1627 } 1628 1629 static struct qed_iwarp_listener * 1630 qed_iwarp_get_listener(struct qed_hwfn *p_hwfn, 1631 struct qed_iwarp_cm_info *cm_info) 1632 { 1633 struct qed_iwarp_listener *listener = NULL; 1634 static const u32 ip_zero[4] = { 0, 0, 0, 0 }; 1635 bool found = false; 1636 1637 qed_iwarp_print_cm_info(p_hwfn, cm_info); 1638 1639 list_for_each_entry(listener, 1640 &p_hwfn->p_rdma_info->iwarp.listen_list, 1641 list_entry) { 1642 if (listener->port == cm_info->local_port) { 1643 if (!memcmp(listener->ip_addr, 1644 ip_zero, sizeof(ip_zero))) { 1645 found = true; 1646 break; 1647 } 1648 1649 if (!memcmp(listener->ip_addr, 1650 cm_info->local_ip, 1651 sizeof(cm_info->local_ip)) && 1652 (listener->vlan == cm_info->vlan)) { 1653 found = true; 1654 break; 1655 } 1656 } 1657 } 1658 1659 if (found) { 1660 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener found = %p\n", 1661 listener); 1662 return listener; 1663 } 1664 1665 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener not found\n"); 1666 return NULL; 1667 } 1668 1669 static int 1670 qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn, 1671 struct qed_iwarp_cm_info *cm_info, 1672 void *buf, 1673 u8 *remote_mac_addr, 1674 u8 *local_mac_addr, 1675 int *payload_len, int *tcp_start_offset) 1676 { 1677 struct vlan_ethhdr *vethh; 1678 bool vlan_valid = false; 1679 struct ipv6hdr *ip6h; 1680 struct ethhdr *ethh; 1681 struct tcphdr *tcph; 1682 struct iphdr *iph; 1683 int eth_hlen; 1684 int ip_hlen; 1685 int eth_type; 1686 int i; 1687 1688 ethh = buf; 1689 eth_type = ntohs(ethh->h_proto); 1690 if (eth_type == ETH_P_8021Q) { 1691 vlan_valid = true; 1692 vethh = (struct vlan_ethhdr *)ethh; 1693 cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK; 1694 eth_type = ntohs(vethh->h_vlan_encapsulated_proto); 1695 } 1696 1697 eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0); 1698 1699 if (!ether_addr_equal(ethh->h_dest, 1700 p_hwfn->p_rdma_info->iwarp.mac_addr)) { 1701 DP_VERBOSE(p_hwfn, 1702 QED_MSG_RDMA, 1703 "Got unexpected mac %pM instead of %pM\n", 1704 ethh->h_dest, p_hwfn->p_rdma_info->iwarp.mac_addr); 1705 return -EINVAL; 1706 } 1707 1708 ether_addr_copy(remote_mac_addr, ethh->h_source); 1709 ether_addr_copy(local_mac_addr, ethh->h_dest); 1710 1711 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n", 1712 eth_type, ethh->h_source); 1713 1714 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_hlen=%d destination mac: %pM\n", 1715 eth_hlen, ethh->h_dest); 1716 1717 iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen); 1718 1719 if (eth_type == ETH_P_IP) { 1720 if (iph->protocol != IPPROTO_TCP) { 1721 DP_NOTICE(p_hwfn, 1722 "Unexpected ip protocol on ll2 %x\n", 1723 iph->protocol); 1724 return -EINVAL; 1725 } 1726 1727 cm_info->local_ip[0] = ntohl(iph->daddr); 1728 cm_info->remote_ip[0] = ntohl(iph->saddr); 1729 cm_info->ip_version = QED_TCP_IPV4; 1730 1731 ip_hlen = (iph->ihl) * sizeof(u32); 1732 *payload_len = ntohs(iph->tot_len) - ip_hlen; 1733 } else if (eth_type == ETH_P_IPV6) { 1734 ip6h = (struct ipv6hdr *)iph; 1735 1736 if (ip6h->nexthdr != IPPROTO_TCP) { 1737 DP_NOTICE(p_hwfn, 1738 "Unexpected ip protocol on ll2 %x\n", 1739 iph->protocol); 1740 return -EINVAL; 1741 } 1742 1743 for (i = 0; i < 4; i++) { 1744 cm_info->local_ip[i] = 1745 ntohl(ip6h->daddr.in6_u.u6_addr32[i]); 1746 cm_info->remote_ip[i] = 1747 ntohl(ip6h->saddr.in6_u.u6_addr32[i]); 1748 } 1749 cm_info->ip_version = QED_TCP_IPV6; 1750 1751 ip_hlen = sizeof(*ip6h); 1752 *payload_len = ntohs(ip6h->payload_len); 1753 } else { 1754 DP_NOTICE(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type); 1755 return -EINVAL; 1756 } 1757 1758 tcph = (struct tcphdr *)((u8 *)iph + ip_hlen); 1759 1760 if (!tcph->syn) { 1761 DP_NOTICE(p_hwfn, 1762 "Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n", 1763 iph->ihl, tcph->source, tcph->dest); 1764 return -EINVAL; 1765 } 1766 1767 cm_info->local_port = ntohs(tcph->dest); 1768 cm_info->remote_port = ntohs(tcph->source); 1769 1770 qed_iwarp_print_cm_info(p_hwfn, cm_info); 1771 1772 *tcp_start_offset = eth_hlen + ip_hlen; 1773 1774 return 0; 1775 } 1776 1777 static struct qed_iwarp_fpdu *qed_iwarp_get_curr_fpdu(struct qed_hwfn *p_hwfn, 1778 u16 cid) 1779 { 1780 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1781 struct qed_iwarp_fpdu *partial_fpdu; 1782 u32 idx; 1783 1784 idx = cid - qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP); 1785 if (idx >= iwarp_info->max_num_partial_fpdus) { 1786 DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid, 1787 iwarp_info->max_num_partial_fpdus); 1788 return NULL; 1789 } 1790 1791 partial_fpdu = &iwarp_info->partial_fpdus[idx]; 1792 1793 return partial_fpdu; 1794 } 1795 1796 enum qed_iwarp_mpa_pkt_type { 1797 QED_IWARP_MPA_PKT_PACKED, 1798 QED_IWARP_MPA_PKT_PARTIAL, 1799 QED_IWARP_MPA_PKT_UNALIGNED 1800 }; 1801 1802 #define QED_IWARP_INVALID_FPDU_LENGTH 0xffff 1803 #define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2) 1804 #define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4) 1805 1806 /* Pad to multiple of 4 */ 1807 #define QED_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) ALIGN(data_len, 4) 1808 #define QED_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \ 1809 (QED_IWARP_PDU_DATA_LEN_WITH_PAD((_mpa_len) + \ 1810 QED_IWARP_MPA_FPDU_LENGTH_SIZE) + \ 1811 QED_IWARP_MPA_CRC32_DIGEST_SIZE) 1812 1813 /* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */ 1814 #define QED_IWARP_MAX_BDS_PER_FPDU 3 1815 1816 static const char * const pkt_type_str[] = { 1817 "QED_IWARP_MPA_PKT_PACKED", 1818 "QED_IWARP_MPA_PKT_PARTIAL", 1819 "QED_IWARP_MPA_PKT_UNALIGNED" 1820 }; 1821 1822 static int 1823 qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn, 1824 struct qed_iwarp_fpdu *fpdu, 1825 struct qed_iwarp_ll2_buff *buf); 1826 1827 static enum qed_iwarp_mpa_pkt_type 1828 qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn, 1829 struct qed_iwarp_fpdu *fpdu, 1830 u16 tcp_payload_len, u8 *mpa_data) 1831 { 1832 enum qed_iwarp_mpa_pkt_type pkt_type; 1833 u16 mpa_len; 1834 1835 if (fpdu->incomplete_bytes) { 1836 pkt_type = QED_IWARP_MPA_PKT_UNALIGNED; 1837 goto out; 1838 } 1839 1840 /* special case of one byte remaining... 1841 * lower byte will be read next packet 1842 */ 1843 if (tcp_payload_len == 1) { 1844 fpdu->fpdu_length = *mpa_data << BITS_PER_BYTE; 1845 pkt_type = QED_IWARP_MPA_PKT_PARTIAL; 1846 goto out; 1847 } 1848 1849 mpa_len = ntohs(*((u16 *)(mpa_data))); 1850 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); 1851 1852 if (fpdu->fpdu_length <= tcp_payload_len) 1853 pkt_type = QED_IWARP_MPA_PKT_PACKED; 1854 else 1855 pkt_type = QED_IWARP_MPA_PKT_PARTIAL; 1856 1857 out: 1858 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1859 "MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n", 1860 pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len); 1861 1862 return pkt_type; 1863 } 1864 1865 static void 1866 qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf, 1867 struct qed_iwarp_fpdu *fpdu, 1868 struct unaligned_opaque_data *pkt_data, 1869 u16 tcp_payload_size, u8 placement_offset) 1870 { 1871 fpdu->mpa_buf = buf; 1872 fpdu->pkt_hdr = buf->data_phys_addr + placement_offset; 1873 fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset; 1874 fpdu->mpa_frag = buf->data_phys_addr + pkt_data->first_mpa_offset; 1875 fpdu->mpa_frag_virt = (u8 *)(buf->data) + pkt_data->first_mpa_offset; 1876 1877 if (tcp_payload_size == 1) 1878 fpdu->incomplete_bytes = QED_IWARP_INVALID_FPDU_LENGTH; 1879 else if (tcp_payload_size < fpdu->fpdu_length) 1880 fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size; 1881 else 1882 fpdu->incomplete_bytes = 0; /* complete fpdu */ 1883 1884 fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes; 1885 } 1886 1887 static int 1888 qed_iwarp_cp_pkt(struct qed_hwfn *p_hwfn, 1889 struct qed_iwarp_fpdu *fpdu, 1890 struct unaligned_opaque_data *pkt_data, 1891 struct qed_iwarp_ll2_buff *buf, u16 tcp_payload_size) 1892 { 1893 u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf; 1894 int rc; 1895 1896 /* need to copy the data from the partial packet stored in fpdu 1897 * to the new buf, for this we also need to move the data currently 1898 * placed on the buf. The assumption is that the buffer is big enough 1899 * since fpdu_length <= mss, we use an intermediate buffer since 1900 * we may need to copy the new data to an overlapping location 1901 */ 1902 if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) { 1903 DP_ERR(p_hwfn, 1904 "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", 1905 buf->buff_size, fpdu->mpa_frag_len, 1906 tcp_payload_size, fpdu->incomplete_bytes); 1907 return -EINVAL; 1908 } 1909 1910 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1911 "MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n", 1912 fpdu->mpa_frag_virt, fpdu->mpa_frag_len, 1913 (u8 *)(buf->data) + pkt_data->first_mpa_offset, 1914 tcp_payload_size); 1915 1916 memcpy(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len); 1917 memcpy(tmp_buf + fpdu->mpa_frag_len, 1918 (u8 *)(buf->data) + pkt_data->first_mpa_offset, 1919 tcp_payload_size); 1920 1921 rc = qed_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf); 1922 if (rc) 1923 return rc; 1924 1925 /* If we managed to post the buffer copy the data to the new buffer 1926 * o/w this will occur in the next round... 1927 */ 1928 memcpy((u8 *)(buf->data), tmp_buf, 1929 fpdu->mpa_frag_len + tcp_payload_size); 1930 1931 fpdu->mpa_buf = buf; 1932 /* fpdu->pkt_hdr remains as is */ 1933 /* fpdu->mpa_frag is overridden with new buf */ 1934 fpdu->mpa_frag = buf->data_phys_addr; 1935 fpdu->mpa_frag_virt = buf->data; 1936 fpdu->mpa_frag_len += tcp_payload_size; 1937 1938 fpdu->incomplete_bytes -= tcp_payload_size; 1939 1940 DP_VERBOSE(p_hwfn, 1941 QED_MSG_RDMA, 1942 "MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n", 1943 buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size, 1944 fpdu->incomplete_bytes); 1945 1946 return 0; 1947 } 1948 1949 static void 1950 qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn, 1951 struct qed_iwarp_fpdu *fpdu, u8 *mpa_data) 1952 { 1953 u16 mpa_len; 1954 1955 /* Update incomplete packets if needed */ 1956 if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) { 1957 /* Missing lower byte is now available */ 1958 mpa_len = fpdu->fpdu_length | *mpa_data; 1959 fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); 1960 /* one byte of hdr */ 1961 fpdu->mpa_frag_len = 1; 1962 fpdu->incomplete_bytes = fpdu->fpdu_length - 1; 1963 DP_VERBOSE(p_hwfn, 1964 QED_MSG_RDMA, 1965 "MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n", 1966 mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes); 1967 } 1968 } 1969 1970 #define QED_IWARP_IS_RIGHT_EDGE(_curr_pkt) \ 1971 (GET_FIELD((_curr_pkt)->flags, \ 1972 UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE)) 1973 1974 /* This function is used to recycle a buffer using the ll2 drop option. It 1975 * uses the mechanism to ensure that all buffers posted to tx before this one 1976 * were completed. The buffer sent here will be sent as a cookie in the tx 1977 * completion function and can then be reposted to rx chain when done. The flow 1978 * that requires this is the flow where a FPDU splits over more than 3 tcp 1979 * segments. In this case the driver needs to re-post a rx buffer instead of 1980 * the one received, but driver can't simply repost a buffer it copied from 1981 * as there is a case where the buffer was originally a packed FPDU, and is 1982 * partially posted to FW. Driver needs to ensure FW is done with it. 1983 */ 1984 static int 1985 qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn, 1986 struct qed_iwarp_fpdu *fpdu, 1987 struct qed_iwarp_ll2_buff *buf) 1988 { 1989 struct qed_ll2_tx_pkt_info tx_pkt; 1990 u8 ll2_handle; 1991 int rc; 1992 1993 memset(&tx_pkt, 0, sizeof(tx_pkt)); 1994 tx_pkt.num_of_bds = 1; 1995 tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP; 1996 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; 1997 tx_pkt.first_frag = fpdu->pkt_hdr; 1998 tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 1999 buf->piggy_buf = NULL; 2000 tx_pkt.cookie = buf; 2001 2002 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 2003 2004 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 2005 if (rc) 2006 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2007 "Can't drop packet rc=%d\n", rc); 2008 2009 DP_VERBOSE(p_hwfn, 2010 QED_MSG_RDMA, 2011 "MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n", 2012 (unsigned long int)tx_pkt.first_frag, 2013 tx_pkt.first_frag_len, buf, rc); 2014 2015 return rc; 2016 } 2017 2018 static int 2019 qed_iwarp_win_right_edge(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu) 2020 { 2021 struct qed_ll2_tx_pkt_info tx_pkt; 2022 u8 ll2_handle; 2023 int rc; 2024 2025 memset(&tx_pkt, 0, sizeof(tx_pkt)); 2026 tx_pkt.num_of_bds = 1; 2027 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 2028 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; 2029 2030 tx_pkt.first_frag = fpdu->pkt_hdr; 2031 tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 2032 tx_pkt.enable_ip_cksum = true; 2033 tx_pkt.enable_l4_cksum = true; 2034 tx_pkt.calc_ip_len = true; 2035 /* vlan overload with enum iwarp_ll2_tx_queues */ 2036 tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE; 2037 2038 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 2039 2040 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 2041 if (rc) 2042 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2043 "Can't send right edge rc=%d\n", rc); 2044 DP_VERBOSE(p_hwfn, 2045 QED_MSG_RDMA, 2046 "MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n", 2047 tx_pkt.num_of_bds, 2048 (unsigned long int)tx_pkt.first_frag, 2049 tx_pkt.first_frag_len, rc); 2050 2051 return rc; 2052 } 2053 2054 static int 2055 qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn, 2056 struct qed_iwarp_fpdu *fpdu, 2057 struct unaligned_opaque_data *curr_pkt, 2058 struct qed_iwarp_ll2_buff *buf, 2059 u16 tcp_payload_size, enum qed_iwarp_mpa_pkt_type pkt_type) 2060 { 2061 struct qed_ll2_tx_pkt_info tx_pkt; 2062 u8 ll2_handle; 2063 int rc; 2064 2065 memset(&tx_pkt, 0, sizeof(tx_pkt)); 2066 2067 /* An unaligned packet means it's split over two tcp segments. So the 2068 * complete packet requires 3 bds, one for the header, one for the 2069 * part of the fpdu of the first tcp segment, and the last fragment 2070 * will point to the remainder of the fpdu. A packed pdu, requires only 2071 * two bds, one for the header and one for the data. 2072 */ 2073 tx_pkt.num_of_bds = (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2; 2074 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 2075 tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; /* offset in words */ 2076 2077 /* Send the mpa_buf only with the last fpdu (in case of packed) */ 2078 if (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED || 2079 tcp_payload_size <= fpdu->fpdu_length) 2080 tx_pkt.cookie = fpdu->mpa_buf; 2081 2082 tx_pkt.first_frag = fpdu->pkt_hdr; 2083 tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 2084 tx_pkt.enable_ip_cksum = true; 2085 tx_pkt.enable_l4_cksum = true; 2086 tx_pkt.calc_ip_len = true; 2087 /* vlan overload with enum iwarp_ll2_tx_queues */ 2088 tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE; 2089 2090 /* special case of unaligned packet and not packed, need to send 2091 * both buffers as cookie to release. 2092 */ 2093 if (tcp_payload_size == fpdu->incomplete_bytes) 2094 fpdu->mpa_buf->piggy_buf = buf; 2095 2096 ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 2097 2098 /* Set first fragment to header */ 2099 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 2100 if (rc) 2101 goto out; 2102 2103 /* Set second fragment to first part of packet */ 2104 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle, 2105 fpdu->mpa_frag, 2106 fpdu->mpa_frag_len); 2107 if (rc) 2108 goto out; 2109 2110 if (!fpdu->incomplete_bytes) 2111 goto out; 2112 2113 /* Set third fragment to second part of the packet */ 2114 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, 2115 ll2_handle, 2116 buf->data_phys_addr + 2117 curr_pkt->first_mpa_offset, 2118 fpdu->incomplete_bytes); 2119 out: 2120 DP_VERBOSE(p_hwfn, 2121 QED_MSG_RDMA, 2122 "MPA_ALIGN: Sent FPDU num_bds=%d first_frag_len=%x, mpa_frag_len=0x%x, incomplete_bytes:0x%x rc=%d\n", 2123 tx_pkt.num_of_bds, 2124 tx_pkt.first_frag_len, 2125 fpdu->mpa_frag_len, 2126 fpdu->incomplete_bytes, rc); 2127 2128 return rc; 2129 } 2130 2131 static void 2132 qed_iwarp_mpa_get_data(struct qed_hwfn *p_hwfn, 2133 struct unaligned_opaque_data *curr_pkt, 2134 u32 opaque_data0, u32 opaque_data1) 2135 { 2136 u64 opaque_data; 2137 2138 opaque_data = HILO_64(opaque_data1, opaque_data0); 2139 *curr_pkt = *((struct unaligned_opaque_data *)&opaque_data); 2140 2141 curr_pkt->first_mpa_offset = curr_pkt->tcp_payload_offset + 2142 le16_to_cpu(curr_pkt->first_mpa_offset); 2143 curr_pkt->cid = le32_to_cpu(curr_pkt->cid); 2144 } 2145 2146 /* This function is called when an unaligned or incomplete MPA packet arrives 2147 * driver needs to align the packet, perhaps using previous data and send 2148 * it down to FW once it is aligned. 2149 */ 2150 static int 2151 qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn, 2152 struct qed_iwarp_ll2_mpa_buf *mpa_buf) 2153 { 2154 struct unaligned_opaque_data *curr_pkt = &mpa_buf->data; 2155 struct qed_iwarp_ll2_buff *buf = mpa_buf->ll2_buf; 2156 enum qed_iwarp_mpa_pkt_type pkt_type; 2157 struct qed_iwarp_fpdu *fpdu; 2158 int rc = -EINVAL; 2159 u8 *mpa_data; 2160 2161 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, curr_pkt->cid & 0xffff); 2162 if (!fpdu) { /* something corrupt with cid, post rx back */ 2163 DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n", 2164 curr_pkt->cid); 2165 goto err; 2166 } 2167 2168 do { 2169 mpa_data = ((u8 *)(buf->data) + curr_pkt->first_mpa_offset); 2170 2171 pkt_type = qed_iwarp_mpa_classify(p_hwfn, fpdu, 2172 mpa_buf->tcp_payload_len, 2173 mpa_data); 2174 2175 switch (pkt_type) { 2176 case QED_IWARP_MPA_PKT_PARTIAL: 2177 qed_iwarp_init_fpdu(buf, fpdu, 2178 curr_pkt, 2179 mpa_buf->tcp_payload_len, 2180 mpa_buf->placement_offset); 2181 2182 if (!QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) { 2183 mpa_buf->tcp_payload_len = 0; 2184 break; 2185 } 2186 2187 rc = qed_iwarp_win_right_edge(p_hwfn, fpdu); 2188 2189 if (rc) { 2190 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2191 "Can't send FPDU:reset rc=%d\n", rc); 2192 memset(fpdu, 0, sizeof(*fpdu)); 2193 break; 2194 } 2195 2196 mpa_buf->tcp_payload_len = 0; 2197 break; 2198 case QED_IWARP_MPA_PKT_PACKED: 2199 qed_iwarp_init_fpdu(buf, fpdu, 2200 curr_pkt, 2201 mpa_buf->tcp_payload_len, 2202 mpa_buf->placement_offset); 2203 2204 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, 2205 mpa_buf->tcp_payload_len, 2206 pkt_type); 2207 if (rc) { 2208 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2209 "Can't send FPDU:reset rc=%d\n", rc); 2210 memset(fpdu, 0, sizeof(*fpdu)); 2211 break; 2212 } 2213 2214 mpa_buf->tcp_payload_len -= fpdu->fpdu_length; 2215 curr_pkt->first_mpa_offset += fpdu->fpdu_length; 2216 break; 2217 case QED_IWARP_MPA_PKT_UNALIGNED: 2218 qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data); 2219 if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) { 2220 /* special handling of fpdu split over more 2221 * than 2 segments 2222 */ 2223 if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) { 2224 rc = qed_iwarp_win_right_edge(p_hwfn, 2225 fpdu); 2226 /* packet will be re-processed later */ 2227 if (rc) 2228 return rc; 2229 } 2230 2231 rc = qed_iwarp_cp_pkt(p_hwfn, fpdu, curr_pkt, 2232 buf, 2233 mpa_buf->tcp_payload_len); 2234 if (rc) /* packet will be re-processed later */ 2235 return rc; 2236 2237 mpa_buf->tcp_payload_len = 0; 2238 break; 2239 } 2240 2241 rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, 2242 mpa_buf->tcp_payload_len, 2243 pkt_type); 2244 if (rc) { 2245 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2246 "Can't send FPDU:delay rc=%d\n", rc); 2247 /* don't reset fpdu -> we need it for next 2248 * classify 2249 */ 2250 break; 2251 } 2252 2253 mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes; 2254 curr_pkt->first_mpa_offset += fpdu->incomplete_bytes; 2255 /* The framed PDU was sent - no more incomplete bytes */ 2256 fpdu->incomplete_bytes = 0; 2257 break; 2258 } 2259 } while (mpa_buf->tcp_payload_len && !rc); 2260 2261 return rc; 2262 2263 err: 2264 qed_iwarp_ll2_post_rx(p_hwfn, 2265 buf, 2266 p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle); 2267 return rc; 2268 } 2269 2270 static void qed_iwarp_process_pending_pkts(struct qed_hwfn *p_hwfn) 2271 { 2272 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2273 struct qed_iwarp_ll2_mpa_buf *mpa_buf = NULL; 2274 int rc; 2275 2276 while (!list_empty(&iwarp_info->mpa_buf_pending_list)) { 2277 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_pending_list, 2278 struct qed_iwarp_ll2_mpa_buf, 2279 list_entry); 2280 2281 rc = qed_iwarp_process_mpa_pkt(p_hwfn, mpa_buf); 2282 2283 /* busy means break and continue processing later, don't 2284 * remove the buf from the pending list. 2285 */ 2286 if (rc == -EBUSY) 2287 break; 2288 2289 list_move_tail(&mpa_buf->list_entry, 2290 &iwarp_info->mpa_buf_list); 2291 2292 if (rc) { /* different error, don't continue */ 2293 DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc); 2294 break; 2295 } 2296 } 2297 } 2298 2299 static void 2300 qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) 2301 { 2302 struct qed_iwarp_ll2_mpa_buf *mpa_buf; 2303 struct qed_iwarp_info *iwarp_info; 2304 struct qed_hwfn *p_hwfn = cxt; 2305 2306 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2307 mpa_buf = list_first_entry(&iwarp_info->mpa_buf_list, 2308 struct qed_iwarp_ll2_mpa_buf, list_entry); 2309 if (!mpa_buf) { 2310 DP_ERR(p_hwfn, "No free mpa buf\n"); 2311 goto err; 2312 } 2313 2314 list_del(&mpa_buf->list_entry); 2315 qed_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data, 2316 data->opaque_data_0, data->opaque_data_1); 2317 2318 DP_VERBOSE(p_hwfn, 2319 QED_MSG_RDMA, 2320 "LL2 MPA CompRx payload_len:0x%x\tfirst_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n", 2321 data->length.packet_length, mpa_buf->data.first_mpa_offset, 2322 mpa_buf->data.tcp_payload_offset, mpa_buf->data.flags, 2323 mpa_buf->data.cid); 2324 2325 mpa_buf->ll2_buf = data->cookie; 2326 mpa_buf->tcp_payload_len = data->length.packet_length - 2327 mpa_buf->data.first_mpa_offset; 2328 mpa_buf->data.first_mpa_offset += data->u.placement_offset; 2329 mpa_buf->placement_offset = data->u.placement_offset; 2330 2331 list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_pending_list); 2332 2333 qed_iwarp_process_pending_pkts(p_hwfn); 2334 return; 2335 err: 2336 qed_iwarp_ll2_post_rx(p_hwfn, data->cookie, 2337 iwarp_info->ll2_mpa_handle); 2338 } 2339 2340 static void 2341 qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) 2342 { 2343 struct qed_iwarp_ll2_buff *buf = data->cookie; 2344 struct qed_iwarp_listener *listener; 2345 struct qed_ll2_tx_pkt_info tx_pkt; 2346 struct qed_iwarp_cm_info cm_info; 2347 struct qed_hwfn *p_hwfn = cxt; 2348 u8 remote_mac_addr[ETH_ALEN]; 2349 u8 local_mac_addr[ETH_ALEN]; 2350 struct qed_iwarp_ep *ep; 2351 int tcp_start_offset; 2352 u8 ll2_syn_handle; 2353 int payload_len; 2354 u32 hdr_size; 2355 int rc; 2356 2357 memset(&cm_info, 0, sizeof(cm_info)); 2358 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle; 2359 2360 /* Check if packet was received with errors... */ 2361 if (data->err_flags) { 2362 DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n", 2363 data->err_flags); 2364 goto err; 2365 } 2366 2367 if (GET_FIELD(data->parse_flags, 2368 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) && 2369 GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) { 2370 DP_NOTICE(p_hwfn, "Syn packet received with checksum error\n"); 2371 goto err; 2372 } 2373 2374 rc = qed_iwarp_parse_rx_pkt(p_hwfn, &cm_info, (u8 *)(buf->data) + 2375 data->u.placement_offset, remote_mac_addr, 2376 local_mac_addr, &payload_len, 2377 &tcp_start_offset); 2378 if (rc) 2379 goto err; 2380 2381 /* Check if there is a listener for this 4-tuple+vlan */ 2382 listener = qed_iwarp_get_listener(p_hwfn, &cm_info); 2383 if (!listener) { 2384 DP_VERBOSE(p_hwfn, 2385 QED_MSG_RDMA, 2386 "SYN received on tuple not listened on parse_flags=%d packet len=%d\n", 2387 data->parse_flags, data->length.packet_length); 2388 2389 memset(&tx_pkt, 0, sizeof(tx_pkt)); 2390 tx_pkt.num_of_bds = 1; 2391 tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2; 2392 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 2393 tx_pkt.first_frag = buf->data_phys_addr + 2394 data->u.placement_offset; 2395 tx_pkt.first_frag_len = data->length.packet_length; 2396 tx_pkt.cookie = buf; 2397 2398 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_syn_handle, 2399 &tx_pkt, true); 2400 2401 if (rc) { 2402 DP_NOTICE(p_hwfn, 2403 "Can't post SYN back to chip rc=%d\n", rc); 2404 goto err; 2405 } 2406 return; 2407 } 2408 2409 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n"); 2410 /* There may be an open ep on this connection if this is a syn 2411 * retrasnmit... need to make sure there isn't... 2412 */ 2413 if (qed_iwarp_ep_exists(p_hwfn, &cm_info)) 2414 goto err; 2415 2416 ep = qed_iwarp_get_free_ep(p_hwfn); 2417 if (!ep) 2418 goto err; 2419 2420 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2421 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list); 2422 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2423 2424 ether_addr_copy(ep->remote_mac_addr, remote_mac_addr); 2425 ether_addr_copy(ep->local_mac_addr, local_mac_addr); 2426 2427 memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info)); 2428 2429 hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60); 2430 ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size; 2431 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss); 2432 2433 ep->event_cb = listener->event_cb; 2434 ep->cb_context = listener->cb_context; 2435 ep->connect_mode = TCP_CONNECT_PASSIVE; 2436 2437 ep->syn = buf; 2438 ep->syn_ip_payload_length = (u16)payload_len; 2439 ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset + 2440 tcp_start_offset; 2441 2442 rc = qed_iwarp_tcp_offload(p_hwfn, ep); 2443 if (rc) { 2444 qed_iwarp_return_ep(p_hwfn, ep); 2445 goto err; 2446 } 2447 2448 return; 2449 err: 2450 qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle); 2451 } 2452 2453 static void qed_iwarp_ll2_rel_rx_pkt(void *cxt, u8 connection_handle, 2454 void *cookie, dma_addr_t rx_buf_addr, 2455 bool b_last_packet) 2456 { 2457 struct qed_iwarp_ll2_buff *buffer = cookie; 2458 struct qed_hwfn *p_hwfn = cxt; 2459 2460 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size, 2461 buffer->data, buffer->data_phys_addr); 2462 kfree(buffer); 2463 } 2464 2465 static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle, 2466 void *cookie, dma_addr_t first_frag_addr, 2467 bool b_last_fragment, bool b_last_packet) 2468 { 2469 struct qed_iwarp_ll2_buff *buffer = cookie; 2470 struct qed_iwarp_ll2_buff *piggy; 2471 struct qed_hwfn *p_hwfn = cxt; 2472 2473 if (!buffer) /* can happen in packed mpa unaligned... */ 2474 return; 2475 2476 /* this was originally an rx packet, post it back */ 2477 piggy = buffer->piggy_buf; 2478 if (piggy) { 2479 buffer->piggy_buf = NULL; 2480 qed_iwarp_ll2_post_rx(p_hwfn, piggy, connection_handle); 2481 } 2482 2483 qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle); 2484 2485 if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle) 2486 qed_iwarp_process_pending_pkts(p_hwfn); 2487 2488 return; 2489 } 2490 2491 static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle, 2492 void *cookie, dma_addr_t first_frag_addr, 2493 bool b_last_fragment, bool b_last_packet) 2494 { 2495 struct qed_iwarp_ll2_buff *buffer = cookie; 2496 struct qed_hwfn *p_hwfn = cxt; 2497 2498 if (!buffer) 2499 return; 2500 2501 if (buffer->piggy_buf) { 2502 dma_free_coherent(&p_hwfn->cdev->pdev->dev, 2503 buffer->piggy_buf->buff_size, 2504 buffer->piggy_buf->data, 2505 buffer->piggy_buf->data_phys_addr); 2506 2507 kfree(buffer->piggy_buf); 2508 } 2509 2510 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size, 2511 buffer->data, buffer->data_phys_addr); 2512 2513 kfree(buffer); 2514 } 2515 2516 /* The only slowpath for iwarp ll2 is unalign flush. When this completion 2517 * is received, need to reset the FPDU. 2518 */ 2519 static void 2520 qed_iwarp_ll2_slowpath(void *cxt, 2521 u8 connection_handle, 2522 u32 opaque_data_0, u32 opaque_data_1) 2523 { 2524 struct unaligned_opaque_data unalign_data; 2525 struct qed_hwfn *p_hwfn = cxt; 2526 struct qed_iwarp_fpdu *fpdu; 2527 2528 qed_iwarp_mpa_get_data(p_hwfn, &unalign_data, 2529 opaque_data_0, opaque_data_1); 2530 2531 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "(0x%x) Flush fpdu\n", 2532 unalign_data.cid); 2533 2534 fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)unalign_data.cid); 2535 if (fpdu) 2536 memset(fpdu, 0, sizeof(*fpdu)); 2537 } 2538 2539 static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn) 2540 { 2541 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2542 int rc = 0; 2543 2544 if (iwarp_info->ll2_syn_handle != QED_IWARP_HANDLE_INVAL) { 2545 rc = qed_ll2_terminate_connection(p_hwfn, 2546 iwarp_info->ll2_syn_handle); 2547 if (rc) 2548 DP_INFO(p_hwfn, "Failed to terminate syn connection\n"); 2549 2550 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_syn_handle); 2551 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; 2552 } 2553 2554 if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) { 2555 rc = qed_ll2_terminate_connection(p_hwfn, 2556 iwarp_info->ll2_ooo_handle); 2557 if (rc) 2558 DP_INFO(p_hwfn, "Failed to terminate ooo connection\n"); 2559 2560 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle); 2561 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; 2562 } 2563 2564 if (iwarp_info->ll2_mpa_handle != QED_IWARP_HANDLE_INVAL) { 2565 rc = qed_ll2_terminate_connection(p_hwfn, 2566 iwarp_info->ll2_mpa_handle); 2567 if (rc) 2568 DP_INFO(p_hwfn, "Failed to terminate mpa connection\n"); 2569 2570 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_mpa_handle); 2571 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL; 2572 } 2573 2574 qed_llh_remove_mac_filter(p_hwfn->cdev, 0, 2575 p_hwfn->p_rdma_info->iwarp.mac_addr); 2576 2577 return rc; 2578 } 2579 2580 static int 2581 qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn, 2582 int num_rx_bufs, int buff_size, u8 ll2_handle) 2583 { 2584 struct qed_iwarp_ll2_buff *buffer; 2585 int rc = 0; 2586 int i; 2587 2588 for (i = 0; i < num_rx_bufs; i++) { 2589 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 2590 if (!buffer) { 2591 rc = -ENOMEM; 2592 break; 2593 } 2594 2595 buffer->data = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 2596 buff_size, 2597 &buffer->data_phys_addr, 2598 GFP_KERNEL); 2599 if (!buffer->data) { 2600 kfree(buffer); 2601 rc = -ENOMEM; 2602 break; 2603 } 2604 2605 buffer->buff_size = buff_size; 2606 rc = qed_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle); 2607 if (rc) 2608 /* buffers will be deallocated by qed_ll2 */ 2609 break; 2610 } 2611 return rc; 2612 } 2613 2614 #define QED_IWARP_MAX_BUF_SIZE(mtu) \ 2615 ALIGN((mtu) + ETH_HLEN + 2 * VLAN_HLEN + 2 + ETH_CACHE_LINE_SIZE, \ 2616 ETH_CACHE_LINE_SIZE) 2617 2618 static int 2619 qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, 2620 struct qed_rdma_start_in_params *params, 2621 u32 rcv_wnd_size) 2622 { 2623 struct qed_iwarp_info *iwarp_info; 2624 struct qed_ll2_acquire_data data; 2625 struct qed_ll2_cbs cbs; 2626 u32 buff_size; 2627 u16 n_ooo_bufs; 2628 int rc = 0; 2629 int i; 2630 2631 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2632 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; 2633 iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; 2634 iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL; 2635 2636 iwarp_info->max_mtu = params->max_mtu; 2637 2638 ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr); 2639 2640 rc = qed_llh_add_mac_filter(p_hwfn->cdev, 0, params->mac_addr); 2641 if (rc) 2642 return rc; 2643 2644 /* Start SYN connection */ 2645 cbs.rx_comp_cb = qed_iwarp_ll2_comp_syn_pkt; 2646 cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt; 2647 cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt; 2648 cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt; 2649 cbs.slowpath_cb = NULL; 2650 cbs.cookie = p_hwfn; 2651 2652 memset(&data, 0, sizeof(data)); 2653 data.input.conn_type = QED_LL2_TYPE_IWARP; 2654 /* SYN will use ctx based queues */ 2655 data.input.rx_conn_type = QED_LL2_RX_TYPE_CTX; 2656 data.input.mtu = params->max_mtu; 2657 data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE; 2658 data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE; 2659 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */ 2660 data.input.tx_tc = PKT_LB_TC; 2661 data.input.tx_dest = QED_LL2_TX_DEST_LB; 2662 data.p_connection_handle = &iwarp_info->ll2_syn_handle; 2663 data.cbs = &cbs; 2664 2665 rc = qed_ll2_acquire_connection(p_hwfn, &data); 2666 if (rc) { 2667 DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n"); 2668 qed_llh_remove_mac_filter(p_hwfn->cdev, 0, params->mac_addr); 2669 return rc; 2670 } 2671 2672 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle); 2673 if (rc) { 2674 DP_NOTICE(p_hwfn, "Failed to establish LL2 connection\n"); 2675 goto err; 2676 } 2677 2678 buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu); 2679 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn, 2680 QED_IWARP_LL2_SYN_RX_SIZE, 2681 buff_size, 2682 iwarp_info->ll2_syn_handle); 2683 if (rc) 2684 goto err; 2685 2686 /* Start OOO connection */ 2687 data.input.conn_type = QED_LL2_TYPE_OOO; 2688 /* OOO/unaligned will use legacy ll2 queues (ram based) */ 2689 data.input.rx_conn_type = QED_LL2_RX_TYPE_LEGACY; 2690 data.input.mtu = params->max_mtu; 2691 2692 n_ooo_bufs = (QED_IWARP_MAX_OOO * rcv_wnd_size) / 2693 iwarp_info->max_mtu; 2694 n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE); 2695 2696 data.input.rx_num_desc = n_ooo_bufs; 2697 data.input.rx_num_ooo_buffers = n_ooo_bufs; 2698 2699 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */ 2700 data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE; 2701 data.p_connection_handle = &iwarp_info->ll2_ooo_handle; 2702 2703 rc = qed_ll2_acquire_connection(p_hwfn, &data); 2704 if (rc) 2705 goto err; 2706 2707 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle); 2708 if (rc) 2709 goto err; 2710 2711 /* Start Unaligned MPA connection */ 2712 cbs.rx_comp_cb = qed_iwarp_ll2_comp_mpa_pkt; 2713 cbs.slowpath_cb = qed_iwarp_ll2_slowpath; 2714 2715 memset(&data, 0, sizeof(data)); 2716 data.input.conn_type = QED_LL2_TYPE_IWARP; 2717 data.input.mtu = params->max_mtu; 2718 /* FW requires that once a packet arrives OOO, it must have at 2719 * least 2 rx buffers available on the unaligned connection 2720 * for handling the case that it is a partial fpdu. 2721 */ 2722 data.input.rx_num_desc = n_ooo_bufs * 2; 2723 data.input.tx_num_desc = data.input.rx_num_desc; 2724 data.input.tx_max_bds_per_packet = QED_IWARP_MAX_BDS_PER_FPDU; 2725 data.input.tx_tc = PKT_LB_TC; 2726 data.input.tx_dest = QED_LL2_TX_DEST_LB; 2727 data.p_connection_handle = &iwarp_info->ll2_mpa_handle; 2728 data.input.secondary_queue = true; 2729 data.cbs = &cbs; 2730 2731 rc = qed_ll2_acquire_connection(p_hwfn, &data); 2732 if (rc) 2733 goto err; 2734 2735 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle); 2736 if (rc) 2737 goto err; 2738 2739 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn, 2740 data.input.rx_num_desc, 2741 buff_size, 2742 iwarp_info->ll2_mpa_handle); 2743 if (rc) 2744 goto err; 2745 2746 iwarp_info->partial_fpdus = kcalloc((u16)p_hwfn->p_rdma_info->num_qps, 2747 sizeof(*iwarp_info->partial_fpdus), 2748 GFP_KERNEL); 2749 if (!iwarp_info->partial_fpdus) 2750 goto err; 2751 2752 iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps; 2753 2754 iwarp_info->mpa_intermediate_buf = kzalloc(buff_size, GFP_KERNEL); 2755 if (!iwarp_info->mpa_intermediate_buf) 2756 goto err; 2757 2758 /* The mpa_bufs array serves for pending RX packets received on the 2759 * mpa ll2 that don't have place on the tx ring and require later 2760 * processing. We can't fail on allocation of such a struct therefore 2761 * we allocate enough to take care of all rx packets 2762 */ 2763 iwarp_info->mpa_bufs = kcalloc(data.input.rx_num_desc, 2764 sizeof(*iwarp_info->mpa_bufs), 2765 GFP_KERNEL); 2766 if (!iwarp_info->mpa_bufs) 2767 goto err; 2768 2769 INIT_LIST_HEAD(&iwarp_info->mpa_buf_pending_list); 2770 INIT_LIST_HEAD(&iwarp_info->mpa_buf_list); 2771 for (i = 0; i < data.input.rx_num_desc; i++) 2772 list_add_tail(&iwarp_info->mpa_bufs[i].list_entry, 2773 &iwarp_info->mpa_buf_list); 2774 return rc; 2775 err: 2776 qed_iwarp_ll2_stop(p_hwfn); 2777 2778 return rc; 2779 } 2780 2781 static struct { 2782 u32 two_ports; 2783 u32 four_ports; 2784 } qed_iwarp_rcv_wnd_size[MAX_CHIP_IDS] = { 2785 {QED_IWARP_RCV_WND_SIZE_DEF_BB_2P, QED_IWARP_RCV_WND_SIZE_DEF_BB_4P}, 2786 {QED_IWARP_RCV_WND_SIZE_DEF_AH_2P, QED_IWARP_RCV_WND_SIZE_DEF_AH_4P} 2787 }; 2788 2789 int qed_iwarp_setup(struct qed_hwfn *p_hwfn, 2790 struct qed_rdma_start_in_params *params) 2791 { 2792 struct qed_dev *cdev = p_hwfn->cdev; 2793 struct qed_iwarp_info *iwarp_info; 2794 enum chip_ids chip_id; 2795 u32 rcv_wnd_size; 2796 2797 iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2798 2799 iwarp_info->tcp_flags = QED_IWARP_TS_EN; 2800 2801 chip_id = QED_IS_BB(cdev) ? CHIP_BB : CHIP_K2; 2802 rcv_wnd_size = (qed_device_num_ports(cdev) == 4) ? 2803 qed_iwarp_rcv_wnd_size[chip_id].four_ports : 2804 qed_iwarp_rcv_wnd_size[chip_id].two_ports; 2805 2806 /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */ 2807 iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) - 2808 ilog2(QED_IWARP_RCV_WND_SIZE_MIN); 2809 iwarp_info->rcv_wnd_size = rcv_wnd_size >> iwarp_info->rcv_wnd_scale; 2810 iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED; 2811 iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED; 2812 2813 iwarp_info->peer2peer = QED_IWARP_PARAM_P2P; 2814 2815 iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND | 2816 MPA_RTR_TYPE_ZERO_WRITE | 2817 MPA_RTR_TYPE_ZERO_READ; 2818 2819 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock); 2820 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list); 2821 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list); 2822 2823 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP, 2824 qed_iwarp_async_event); 2825 qed_ooo_setup(p_hwfn); 2826 2827 return qed_iwarp_ll2_start(p_hwfn, params, rcv_wnd_size); 2828 } 2829 2830 int qed_iwarp_stop(struct qed_hwfn *p_hwfn) 2831 { 2832 int rc; 2833 2834 qed_iwarp_free_prealloc_ep(p_hwfn); 2835 rc = qed_iwarp_wait_for_all_cids(p_hwfn); 2836 if (rc) 2837 return rc; 2838 2839 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP); 2840 2841 return qed_iwarp_ll2_stop(p_hwfn); 2842 } 2843 2844 static void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn, 2845 struct qed_iwarp_ep *ep, 2846 u8 fw_return_code) 2847 { 2848 struct qed_iwarp_cm_event_params params; 2849 2850 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_ERROR, true); 2851 2852 params.event = QED_IWARP_EVENT_CLOSE; 2853 params.ep_context = ep; 2854 params.cm_info = &ep->cm_info; 2855 params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ? 2856 0 : -ECONNRESET; 2857 2858 /* paired with READ_ONCE in destroy_qp */ 2859 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED); 2860 2861 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2862 list_del(&ep->list_entry); 2863 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2864 2865 ep->event_cb(ep->cb_context, ¶ms); 2866 } 2867 2868 static void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn, 2869 struct qed_iwarp_ep *ep, 2870 int fw_ret_code) 2871 { 2872 struct qed_iwarp_cm_event_params params; 2873 bool event_cb = false; 2874 2875 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n", 2876 ep->cid, fw_ret_code); 2877 2878 switch (fw_ret_code) { 2879 case IWARP_EXCEPTION_DETECTED_LLP_CLOSED: 2880 params.status = 0; 2881 params.event = QED_IWARP_EVENT_DISCONNECT; 2882 event_cb = true; 2883 break; 2884 case IWARP_EXCEPTION_DETECTED_LLP_RESET: 2885 params.status = -ECONNRESET; 2886 params.event = QED_IWARP_EVENT_DISCONNECT; 2887 event_cb = true; 2888 break; 2889 case IWARP_EXCEPTION_DETECTED_RQ_EMPTY: 2890 params.event = QED_IWARP_EVENT_RQ_EMPTY; 2891 event_cb = true; 2892 break; 2893 case IWARP_EXCEPTION_DETECTED_IRQ_FULL: 2894 params.event = QED_IWARP_EVENT_IRQ_FULL; 2895 event_cb = true; 2896 break; 2897 case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT: 2898 params.event = QED_IWARP_EVENT_LLP_TIMEOUT; 2899 event_cb = true; 2900 break; 2901 case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR: 2902 params.event = QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR; 2903 event_cb = true; 2904 break; 2905 case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW: 2906 params.event = QED_IWARP_EVENT_CQ_OVERFLOW; 2907 event_cb = true; 2908 break; 2909 case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC: 2910 params.event = QED_IWARP_EVENT_QP_CATASTROPHIC; 2911 event_cb = true; 2912 break; 2913 case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR: 2914 params.event = QED_IWARP_EVENT_LOCAL_ACCESS_ERROR; 2915 event_cb = true; 2916 break; 2917 case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR: 2918 params.event = QED_IWARP_EVENT_REMOTE_OPERATION_ERROR; 2919 event_cb = true; 2920 break; 2921 case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED: 2922 params.event = QED_IWARP_EVENT_TERMINATE_RECEIVED; 2923 event_cb = true; 2924 break; 2925 default: 2926 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2927 "Unhandled exception received...fw_ret_code=%d\n", 2928 fw_ret_code); 2929 break; 2930 } 2931 2932 if (event_cb) { 2933 params.ep_context = ep; 2934 params.cm_info = &ep->cm_info; 2935 ep->event_cb(ep->cb_context, ¶ms); 2936 } 2937 } 2938 2939 static void 2940 qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn, 2941 struct qed_iwarp_ep *ep, u8 fw_return_code) 2942 { 2943 struct qed_iwarp_cm_event_params params; 2944 2945 memset(¶ms, 0, sizeof(params)); 2946 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE; 2947 params.ep_context = ep; 2948 params.cm_info = &ep->cm_info; 2949 /* paired with READ_ONCE in destroy_qp */ 2950 smp_store_release(&ep->state, QED_IWARP_EP_CLOSED); 2951 2952 switch (fw_return_code) { 2953 case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET: 2954 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2955 "%s(0x%x) TCP connect got invalid packet\n", 2956 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2957 params.status = -ECONNRESET; 2958 break; 2959 case IWARP_CONN_ERROR_TCP_CONNECTION_RST: 2960 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2961 "%s(0x%x) TCP Connection Reset\n", 2962 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2963 params.status = -ECONNRESET; 2964 break; 2965 case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT: 2966 DP_NOTICE(p_hwfn, "%s(0x%x) TCP timeout\n", 2967 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2968 params.status = -EBUSY; 2969 break; 2970 case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER: 2971 DP_NOTICE(p_hwfn, "%s(0x%x) MPA not supported VER\n", 2972 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2973 params.status = -ECONNREFUSED; 2974 break; 2975 case IWARP_CONN_ERROR_MPA_INVALID_PACKET: 2976 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n", 2977 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 2978 params.status = -ECONNRESET; 2979 break; 2980 default: 2981 DP_ERR(p_hwfn, 2982 "%s(0x%x) Unexpected return code tcp connect: %d\n", 2983 QED_IWARP_CONNECT_MODE_STRING(ep), 2984 ep->tcp_cid, fw_return_code); 2985 params.status = -ECONNRESET; 2986 break; 2987 } 2988 2989 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 2990 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 2991 qed_iwarp_return_ep(p_hwfn, ep); 2992 } else { 2993 ep->event_cb(ep->cb_context, ¶ms); 2994 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2995 list_del(&ep->list_entry); 2996 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2997 } 2998 } 2999 3000 static void 3001 qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn, 3002 struct qed_iwarp_ep *ep, u8 fw_return_code) 3003 { 3004 u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle; 3005 3006 if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 3007 /* Done with the SYN packet, post back to ll2 rx */ 3008 qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle); 3009 3010 ep->syn = NULL; 3011 3012 /* If connect failed - upper layer doesn't know about it */ 3013 if (fw_return_code == RDMA_RETURN_OK) 3014 qed_iwarp_mpa_received(p_hwfn, ep); 3015 else 3016 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep, 3017 fw_return_code); 3018 } else { 3019 if (fw_return_code == RDMA_RETURN_OK) 3020 qed_iwarp_mpa_offload(p_hwfn, ep); 3021 else 3022 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep, 3023 fw_return_code); 3024 } 3025 } 3026 3027 static inline bool 3028 qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 3029 { 3030 if (!ep || (ep->sig != QED_EP_SIG)) { 3031 DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep); 3032 return false; 3033 } 3034 3035 return true; 3036 } 3037 3038 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, 3039 u8 fw_event_code, u16 echo, 3040 union event_ring_data *data, 3041 u8 fw_return_code) 3042 { 3043 struct qed_rdma_events events = p_hwfn->p_rdma_info->events; 3044 struct regpair *fw_handle = &data->rdma_data.async_handle; 3045 struct qed_iwarp_ep *ep = NULL; 3046 u16 srq_offset; 3047 u16 srq_id; 3048 u16 cid; 3049 3050 ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi, 3051 fw_handle->lo); 3052 3053 switch (fw_event_code) { 3054 case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE: 3055 /* Async completion after TCP 3-way handshake */ 3056 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3057 return -EINVAL; 3058 DP_VERBOSE(p_hwfn, 3059 QED_MSG_RDMA, 3060 "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n", 3061 ep->tcp_cid, fw_return_code); 3062 qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code); 3063 break; 3064 case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED: 3065 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3066 return -EINVAL; 3067 DP_VERBOSE(p_hwfn, 3068 QED_MSG_RDMA, 3069 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n", 3070 ep->cid, fw_return_code); 3071 qed_iwarp_exception_received(p_hwfn, ep, fw_return_code); 3072 break; 3073 case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE: 3074 /* Async completion for Close Connection ramrod */ 3075 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3076 return -EINVAL; 3077 DP_VERBOSE(p_hwfn, 3078 QED_MSG_RDMA, 3079 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n", 3080 ep->cid, fw_return_code); 3081 qed_iwarp_qp_in_error(p_hwfn, ep, fw_return_code); 3082 break; 3083 case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED: 3084 /* Async event for active side only */ 3085 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3086 return -EINVAL; 3087 DP_VERBOSE(p_hwfn, 3088 QED_MSG_RDMA, 3089 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n", 3090 ep->cid, fw_return_code); 3091 qed_iwarp_mpa_reply_arrived(p_hwfn, ep); 3092 break; 3093 case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE: 3094 if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3095 return -EINVAL; 3096 DP_VERBOSE(p_hwfn, 3097 QED_MSG_RDMA, 3098 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n", 3099 ep->cid, fw_return_code); 3100 qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code); 3101 break; 3102 case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED: 3103 cid = (u16)le32_to_cpu(fw_handle->lo); 3104 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 3105 "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid); 3106 qed_iwarp_cid_cleaned(p_hwfn, cid); 3107 3108 break; 3109 case IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY: 3110 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY\n"); 3111 srq_offset = p_hwfn->p_rdma_info->srq_id_offset; 3112 /* FW assigns value that is no greater than u16 */ 3113 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset; 3114 events.affiliated_event(events.context, 3115 QED_IWARP_EVENT_SRQ_EMPTY, 3116 &srq_id); 3117 break; 3118 case IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT: 3119 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT\n"); 3120 srq_offset = p_hwfn->p_rdma_info->srq_id_offset; 3121 /* FW assigns value that is no greater than u16 */ 3122 srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset; 3123 events.affiliated_event(events.context, 3124 QED_IWARP_EVENT_SRQ_LIMIT, 3125 &srq_id); 3126 break; 3127 case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW: 3128 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n"); 3129 3130 p_hwfn->p_rdma_info->events.affiliated_event( 3131 p_hwfn->p_rdma_info->events.context, 3132 QED_IWARP_EVENT_CQ_OVERFLOW, 3133 (void *)fw_handle); 3134 break; 3135 default: 3136 DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n", 3137 fw_event_code); 3138 return -EINVAL; 3139 } 3140 return 0; 3141 } 3142 3143 int 3144 qed_iwarp_create_listen(void *rdma_cxt, 3145 struct qed_iwarp_listen_in *iparams, 3146 struct qed_iwarp_listen_out *oparams) 3147 { 3148 struct qed_hwfn *p_hwfn = rdma_cxt; 3149 struct qed_iwarp_listener *listener; 3150 3151 listener = kzalloc(sizeof(*listener), GFP_KERNEL); 3152 if (!listener) 3153 return -ENOMEM; 3154 3155 listener->ip_version = iparams->ip_version; 3156 memcpy(listener->ip_addr, iparams->ip_addr, sizeof(listener->ip_addr)); 3157 listener->port = iparams->port; 3158 listener->vlan = iparams->vlan; 3159 3160 listener->event_cb = iparams->event_cb; 3161 listener->cb_context = iparams->cb_context; 3162 listener->max_backlog = iparams->max_backlog; 3163 oparams->handle = listener; 3164 3165 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3166 list_add_tail(&listener->list_entry, 3167 &p_hwfn->p_rdma_info->iwarp.listen_list); 3168 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3169 3170 DP_VERBOSE(p_hwfn, 3171 QED_MSG_RDMA, 3172 "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n", 3173 listener->event_cb, 3174 listener, 3175 listener->ip_addr[0], 3176 listener->ip_addr[1], 3177 listener->ip_addr[2], 3178 listener->ip_addr[3], listener->port, listener->vlan); 3179 3180 return 0; 3181 } 3182 3183 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle) 3184 { 3185 struct qed_iwarp_listener *listener = handle; 3186 struct qed_hwfn *p_hwfn = rdma_cxt; 3187 3188 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "handle=%p\n", handle); 3189 3190 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3191 list_del(&listener->list_entry); 3192 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 3193 3194 kfree(listener); 3195 3196 return 0; 3197 } 3198 3199 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams) 3200 { 3201 struct qed_hwfn *p_hwfn = rdma_cxt; 3202 struct qed_sp_init_data init_data; 3203 struct qed_spq_entry *p_ent; 3204 struct qed_iwarp_ep *ep; 3205 struct qed_rdma_qp *qp; 3206 int rc; 3207 3208 ep = iparams->ep_context; 3209 if (!ep) { 3210 DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n"); 3211 return -EINVAL; 3212 } 3213 3214 qp = ep->qp; 3215 3216 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n", 3217 qp->icid, ep->tcp_cid); 3218 3219 memset(&init_data, 0, sizeof(init_data)); 3220 init_data.cid = qp->icid; 3221 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 3222 init_data.comp_mode = QED_SPQ_MODE_CB; 3223 3224 rc = qed_sp_init_request(p_hwfn, &p_ent, 3225 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR, 3226 PROTOCOLID_IWARP, &init_data); 3227 3228 if (rc) 3229 return rc; 3230 3231 rc = qed_spq_post(p_hwfn, p_ent, NULL); 3232 3233 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc); 3234 3235 return rc; 3236 } 3237 3238 void 3239 qed_iwarp_query_qp(struct qed_rdma_qp *qp, 3240 struct qed_rdma_query_qp_out_params *out_params) 3241 { 3242 out_params->state = qed_iwarp2roce_state(qp->iwarp_state); 3243 } 3244