1 /* 2 * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved. 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 * - Redistributions in binary form must reproduce the above 18 * copyright notice, this list of conditions and the following 19 * disclaimer in the documentation and/or other materials 20 * provided with the distribution. 21 * 22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 23 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 25 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 26 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 27 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 28 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 29 * SOFTWARE. 30 */ 31 #ifndef __IW_CXGB4_H__ 32 #define __IW_CXGB4_H__ 33 34 #include <linux/mutex.h> 35 #include <linux/list.h> 36 #include <linux/spinlock.h> 37 #include <linux/idr.h> 38 #include <linux/completion.h> 39 #include <linux/netdevice.h> 40 #include <linux/sched.h> 41 #include <linux/pci.h> 42 #include <linux/dma-mapping.h> 43 #include <linux/inet.h> 44 #include <linux/wait.h> 45 #include <linux/kref.h> 46 #include <linux/timer.h> 47 #include <linux/io.h> 48 49 #include <asm/byteorder.h> 50 51 #include <net/net_namespace.h> 52 53 #include <rdma/ib_verbs.h> 54 #include <rdma/iw_cm.h> 55 #include <rdma/rdma_netlink.h> 56 #include <rdma/iw_portmap.h> 57 58 #include "cxgb4.h" 59 #include "cxgb4_uld.h" 60 #include "l2t.h" 61 #include "user.h" 62 63 #define DRV_NAME "iw_cxgb4" 64 #define MOD DRV_NAME ":" 65 66 extern int c4iw_debug; 67 #define PDBG(fmt, args...) \ 68 do { \ 69 if (c4iw_debug) \ 70 printk(MOD fmt, ## args); \ 71 } while (0) 72 73 #include "t4.h" 74 75 #define PBL_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->pbl.start) 76 #define RQT_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->rq.start) 77 78 static inline void *cplhdr(struct sk_buff *skb) 79 { 80 return skb->data; 81 } 82 83 #define C4IW_ID_TABLE_F_RANDOM 1 /* Pseudo-randomize the id's returned */ 84 #define C4IW_ID_TABLE_F_EMPTY 2 /* Table is initially empty */ 85 86 struct c4iw_id_table { 87 u32 flags; 88 u32 start; /* logical minimal id */ 89 u32 last; /* hint for find */ 90 u32 max; 91 spinlock_t lock; 92 unsigned long *table; 93 }; 94 95 struct c4iw_resource { 96 struct c4iw_id_table tpt_table; 97 struct c4iw_id_table qid_table; 98 struct c4iw_id_table pdid_table; 99 }; 100 101 struct c4iw_qid_list { 102 struct list_head entry; 103 u32 qid; 104 }; 105 106 struct c4iw_dev_ucontext { 107 struct list_head qpids; 108 struct list_head cqids; 109 struct mutex lock; 110 }; 111 112 enum c4iw_rdev_flags { 113 T4_FATAL_ERROR = (1<<0), 114 T4_STATUS_PAGE_DISABLED = (1<<1), 115 }; 116 117 struct c4iw_stat { 118 u64 total; 119 u64 cur; 120 u64 max; 121 u64 fail; 122 }; 123 124 struct c4iw_stats { 125 struct mutex lock; 126 struct c4iw_stat qid; 127 struct c4iw_stat pd; 128 struct c4iw_stat stag; 129 struct c4iw_stat pbl; 130 struct c4iw_stat rqt; 131 struct c4iw_stat ocqp; 132 u64 db_full; 133 u64 db_empty; 134 u64 db_drop; 135 u64 db_state_transitions; 136 u64 db_fc_interruptions; 137 u64 tcam_full; 138 u64 act_ofld_conn_fails; 139 u64 pas_ofld_conn_fails; 140 }; 141 142 struct c4iw_hw_queue { 143 int t4_eq_status_entries; 144 int t4_max_eq_size; 145 int t4_max_iq_size; 146 int t4_max_rq_size; 147 int t4_max_sq_size; 148 int t4_max_qp_depth; 149 int t4_max_cq_depth; 150 int t4_stat_len; 151 }; 152 153 struct wr_log_entry { 154 struct timespec post_host_ts; 155 struct timespec poll_host_ts; 156 u64 post_sge_ts; 157 u64 cqe_sge_ts; 158 u64 poll_sge_ts; 159 u16 qid; 160 u16 wr_id; 161 u8 opcode; 162 u8 valid; 163 }; 164 165 struct c4iw_rdev { 166 struct c4iw_resource resource; 167 unsigned long qpshift; 168 u32 qpmask; 169 unsigned long cqshift; 170 u32 cqmask; 171 struct c4iw_dev_ucontext uctx; 172 struct gen_pool *pbl_pool; 173 struct gen_pool *rqt_pool; 174 struct gen_pool *ocqp_pool; 175 u32 flags; 176 struct cxgb4_lld_info lldi; 177 unsigned long bar2_pa; 178 void __iomem *bar2_kva; 179 unsigned long oc_mw_pa; 180 void __iomem *oc_mw_kva; 181 struct c4iw_stats stats; 182 struct c4iw_hw_queue hw_queue; 183 struct t4_dev_status_page *status_page; 184 atomic_t wr_log_idx; 185 struct wr_log_entry *wr_log; 186 int wr_log_size; 187 }; 188 189 static inline int c4iw_fatal_error(struct c4iw_rdev *rdev) 190 { 191 return rdev->flags & T4_FATAL_ERROR; 192 } 193 194 static inline int c4iw_num_stags(struct c4iw_rdev *rdev) 195 { 196 return (int)(rdev->lldi.vr->stag.size >> 5); 197 } 198 199 #define C4IW_WR_TO (30*HZ) 200 201 struct c4iw_wr_wait { 202 struct completion completion; 203 int ret; 204 }; 205 206 static inline void c4iw_init_wr_wait(struct c4iw_wr_wait *wr_waitp) 207 { 208 wr_waitp->ret = 0; 209 init_completion(&wr_waitp->completion); 210 } 211 212 static inline void c4iw_wake_up(struct c4iw_wr_wait *wr_waitp, int ret) 213 { 214 wr_waitp->ret = ret; 215 complete(&wr_waitp->completion); 216 } 217 218 static inline int c4iw_wait_for_reply(struct c4iw_rdev *rdev, 219 struct c4iw_wr_wait *wr_waitp, 220 u32 hwtid, u32 qpid, 221 const char *func) 222 { 223 unsigned to = C4IW_WR_TO; 224 int ret; 225 226 do { 227 ret = wait_for_completion_timeout(&wr_waitp->completion, to); 228 if (!ret) { 229 printk(KERN_ERR MOD "%s - Device %s not responding - " 230 "tid %u qpid %u\n", func, 231 pci_name(rdev->lldi.pdev), hwtid, qpid); 232 if (c4iw_fatal_error(rdev)) { 233 wr_waitp->ret = -EIO; 234 break; 235 } 236 to = to << 2; 237 } 238 } while (!ret); 239 if (wr_waitp->ret) 240 PDBG("%s: FW reply %d tid %u qpid %u\n", 241 pci_name(rdev->lldi.pdev), wr_waitp->ret, hwtid, qpid); 242 return wr_waitp->ret; 243 } 244 245 enum db_state { 246 NORMAL = 0, 247 FLOW_CONTROL = 1, 248 RECOVERY = 2, 249 STOPPED = 3 250 }; 251 252 struct c4iw_dev { 253 struct ib_device ibdev; 254 struct c4iw_rdev rdev; 255 u32 device_cap_flags; 256 struct idr cqidr; 257 struct idr qpidr; 258 struct idr mmidr; 259 spinlock_t lock; 260 struct mutex db_mutex; 261 struct dentry *debugfs_root; 262 enum db_state db_state; 263 struct idr hwtid_idr; 264 struct idr atid_idr; 265 struct idr stid_idr; 266 struct list_head db_fc_list; 267 u32 avail_ird; 268 }; 269 270 static inline struct c4iw_dev *to_c4iw_dev(struct ib_device *ibdev) 271 { 272 return container_of(ibdev, struct c4iw_dev, ibdev); 273 } 274 275 static inline struct c4iw_dev *rdev_to_c4iw_dev(struct c4iw_rdev *rdev) 276 { 277 return container_of(rdev, struct c4iw_dev, rdev); 278 } 279 280 static inline struct c4iw_cq *get_chp(struct c4iw_dev *rhp, u32 cqid) 281 { 282 return idr_find(&rhp->cqidr, cqid); 283 } 284 285 static inline struct c4iw_qp *get_qhp(struct c4iw_dev *rhp, u32 qpid) 286 { 287 return idr_find(&rhp->qpidr, qpid); 288 } 289 290 static inline struct c4iw_mr *get_mhp(struct c4iw_dev *rhp, u32 mmid) 291 { 292 return idr_find(&rhp->mmidr, mmid); 293 } 294 295 static inline int _insert_handle(struct c4iw_dev *rhp, struct idr *idr, 296 void *handle, u32 id, int lock) 297 { 298 int ret; 299 300 if (lock) { 301 idr_preload(GFP_KERNEL); 302 spin_lock_irq(&rhp->lock); 303 } 304 305 ret = idr_alloc(idr, handle, id, id + 1, GFP_ATOMIC); 306 307 if (lock) { 308 spin_unlock_irq(&rhp->lock); 309 idr_preload_end(); 310 } 311 312 BUG_ON(ret == -ENOSPC); 313 return ret < 0 ? ret : 0; 314 } 315 316 static inline int insert_handle(struct c4iw_dev *rhp, struct idr *idr, 317 void *handle, u32 id) 318 { 319 return _insert_handle(rhp, idr, handle, id, 1); 320 } 321 322 static inline int insert_handle_nolock(struct c4iw_dev *rhp, struct idr *idr, 323 void *handle, u32 id) 324 { 325 return _insert_handle(rhp, idr, handle, id, 0); 326 } 327 328 static inline void _remove_handle(struct c4iw_dev *rhp, struct idr *idr, 329 u32 id, int lock) 330 { 331 if (lock) 332 spin_lock_irq(&rhp->lock); 333 idr_remove(idr, id); 334 if (lock) 335 spin_unlock_irq(&rhp->lock); 336 } 337 338 static inline void remove_handle(struct c4iw_dev *rhp, struct idr *idr, u32 id) 339 { 340 _remove_handle(rhp, idr, id, 1); 341 } 342 343 static inline void remove_handle_nolock(struct c4iw_dev *rhp, 344 struct idr *idr, u32 id) 345 { 346 _remove_handle(rhp, idr, id, 0); 347 } 348 349 extern uint c4iw_max_read_depth; 350 351 static inline int cur_max_read_depth(struct c4iw_dev *dev) 352 { 353 return min(dev->rdev.lldi.max_ordird_qp, c4iw_max_read_depth); 354 } 355 356 struct c4iw_pd { 357 struct ib_pd ibpd; 358 u32 pdid; 359 struct c4iw_dev *rhp; 360 }; 361 362 static inline struct c4iw_pd *to_c4iw_pd(struct ib_pd *ibpd) 363 { 364 return container_of(ibpd, struct c4iw_pd, ibpd); 365 } 366 367 struct tpt_attributes { 368 u64 len; 369 u64 va_fbo; 370 enum fw_ri_mem_perms perms; 371 u32 stag; 372 u32 pdid; 373 u32 qpid; 374 u32 pbl_addr; 375 u32 pbl_size; 376 u32 state:1; 377 u32 type:2; 378 u32 rsvd:1; 379 u32 remote_invaliate_disable:1; 380 u32 zbva:1; 381 u32 mw_bind_enable:1; 382 u32 page_size:5; 383 }; 384 385 struct c4iw_mr { 386 struct ib_mr ibmr; 387 struct ib_umem *umem; 388 struct c4iw_dev *rhp; 389 u64 kva; 390 struct tpt_attributes attr; 391 }; 392 393 static inline struct c4iw_mr *to_c4iw_mr(struct ib_mr *ibmr) 394 { 395 return container_of(ibmr, struct c4iw_mr, ibmr); 396 } 397 398 struct c4iw_mw { 399 struct ib_mw ibmw; 400 struct c4iw_dev *rhp; 401 u64 kva; 402 struct tpt_attributes attr; 403 }; 404 405 static inline struct c4iw_mw *to_c4iw_mw(struct ib_mw *ibmw) 406 { 407 return container_of(ibmw, struct c4iw_mw, ibmw); 408 } 409 410 struct c4iw_fr_page_list { 411 struct ib_fast_reg_page_list ibpl; 412 DEFINE_DMA_UNMAP_ADDR(mapping); 413 dma_addr_t dma_addr; 414 struct c4iw_dev *dev; 415 int pll_len; 416 }; 417 418 static inline struct c4iw_fr_page_list *to_c4iw_fr_page_list( 419 struct ib_fast_reg_page_list *ibpl) 420 { 421 return container_of(ibpl, struct c4iw_fr_page_list, ibpl); 422 } 423 424 struct c4iw_cq { 425 struct ib_cq ibcq; 426 struct c4iw_dev *rhp; 427 struct t4_cq cq; 428 spinlock_t lock; 429 spinlock_t comp_handler_lock; 430 atomic_t refcnt; 431 wait_queue_head_t wait; 432 }; 433 434 static inline struct c4iw_cq *to_c4iw_cq(struct ib_cq *ibcq) 435 { 436 return container_of(ibcq, struct c4iw_cq, ibcq); 437 } 438 439 struct c4iw_mpa_attributes { 440 u8 initiator; 441 u8 recv_marker_enabled; 442 u8 xmit_marker_enabled; 443 u8 crc_enabled; 444 u8 enhanced_rdma_conn; 445 u8 version; 446 u8 p2p_type; 447 }; 448 449 struct c4iw_qp_attributes { 450 u32 scq; 451 u32 rcq; 452 u32 sq_num_entries; 453 u32 rq_num_entries; 454 u32 sq_max_sges; 455 u32 sq_max_sges_rdma_write; 456 u32 rq_max_sges; 457 u32 state; 458 u8 enable_rdma_read; 459 u8 enable_rdma_write; 460 u8 enable_bind; 461 u8 enable_mmid0_fastreg; 462 u32 max_ord; 463 u32 max_ird; 464 u32 pd; 465 u32 next_state; 466 char terminate_buffer[52]; 467 u32 terminate_msg_len; 468 u8 is_terminate_local; 469 struct c4iw_mpa_attributes mpa_attr; 470 struct c4iw_ep *llp_stream_handle; 471 u8 layer_etype; 472 u8 ecode; 473 u16 sq_db_inc; 474 u16 rq_db_inc; 475 u8 send_term; 476 }; 477 478 struct c4iw_qp { 479 struct ib_qp ibqp; 480 struct list_head db_fc_entry; 481 struct c4iw_dev *rhp; 482 struct c4iw_ep *ep; 483 struct c4iw_qp_attributes attr; 484 struct t4_wq wq; 485 spinlock_t lock; 486 struct mutex mutex; 487 atomic_t refcnt; 488 wait_queue_head_t wait; 489 struct timer_list timer; 490 int sq_sig_all; 491 }; 492 493 static inline struct c4iw_qp *to_c4iw_qp(struct ib_qp *ibqp) 494 { 495 return container_of(ibqp, struct c4iw_qp, ibqp); 496 } 497 498 struct c4iw_ucontext { 499 struct ib_ucontext ibucontext; 500 struct c4iw_dev_ucontext uctx; 501 u32 key; 502 spinlock_t mmap_lock; 503 struct list_head mmaps; 504 }; 505 506 static inline struct c4iw_ucontext *to_c4iw_ucontext(struct ib_ucontext *c) 507 { 508 return container_of(c, struct c4iw_ucontext, ibucontext); 509 } 510 511 struct c4iw_mm_entry { 512 struct list_head entry; 513 u64 addr; 514 u32 key; 515 unsigned len; 516 }; 517 518 static inline struct c4iw_mm_entry *remove_mmap(struct c4iw_ucontext *ucontext, 519 u32 key, unsigned len) 520 { 521 struct list_head *pos, *nxt; 522 struct c4iw_mm_entry *mm; 523 524 spin_lock(&ucontext->mmap_lock); 525 list_for_each_safe(pos, nxt, &ucontext->mmaps) { 526 527 mm = list_entry(pos, struct c4iw_mm_entry, entry); 528 if (mm->key == key && mm->len == len) { 529 list_del_init(&mm->entry); 530 spin_unlock(&ucontext->mmap_lock); 531 PDBG("%s key 0x%x addr 0x%llx len %d\n", __func__, 532 key, (unsigned long long) mm->addr, mm->len); 533 return mm; 534 } 535 } 536 spin_unlock(&ucontext->mmap_lock); 537 return NULL; 538 } 539 540 static inline void insert_mmap(struct c4iw_ucontext *ucontext, 541 struct c4iw_mm_entry *mm) 542 { 543 spin_lock(&ucontext->mmap_lock); 544 PDBG("%s key 0x%x addr 0x%llx len %d\n", __func__, 545 mm->key, (unsigned long long) mm->addr, mm->len); 546 list_add_tail(&mm->entry, &ucontext->mmaps); 547 spin_unlock(&ucontext->mmap_lock); 548 } 549 550 enum c4iw_qp_attr_mask { 551 C4IW_QP_ATTR_NEXT_STATE = 1 << 0, 552 C4IW_QP_ATTR_SQ_DB = 1<<1, 553 C4IW_QP_ATTR_RQ_DB = 1<<2, 554 C4IW_QP_ATTR_ENABLE_RDMA_READ = 1 << 7, 555 C4IW_QP_ATTR_ENABLE_RDMA_WRITE = 1 << 8, 556 C4IW_QP_ATTR_ENABLE_RDMA_BIND = 1 << 9, 557 C4IW_QP_ATTR_MAX_ORD = 1 << 11, 558 C4IW_QP_ATTR_MAX_IRD = 1 << 12, 559 C4IW_QP_ATTR_LLP_STREAM_HANDLE = 1 << 22, 560 C4IW_QP_ATTR_STREAM_MSG_BUFFER = 1 << 23, 561 C4IW_QP_ATTR_MPA_ATTR = 1 << 24, 562 C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE = 1 << 25, 563 C4IW_QP_ATTR_VALID_MODIFY = (C4IW_QP_ATTR_ENABLE_RDMA_READ | 564 C4IW_QP_ATTR_ENABLE_RDMA_WRITE | 565 C4IW_QP_ATTR_MAX_ORD | 566 C4IW_QP_ATTR_MAX_IRD | 567 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 568 C4IW_QP_ATTR_STREAM_MSG_BUFFER | 569 C4IW_QP_ATTR_MPA_ATTR | 570 C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE) 571 }; 572 573 int c4iw_modify_qp(struct c4iw_dev *rhp, 574 struct c4iw_qp *qhp, 575 enum c4iw_qp_attr_mask mask, 576 struct c4iw_qp_attributes *attrs, 577 int internal); 578 579 enum c4iw_qp_state { 580 C4IW_QP_STATE_IDLE, 581 C4IW_QP_STATE_RTS, 582 C4IW_QP_STATE_ERROR, 583 C4IW_QP_STATE_TERMINATE, 584 C4IW_QP_STATE_CLOSING, 585 C4IW_QP_STATE_TOT 586 }; 587 588 static inline int c4iw_convert_state(enum ib_qp_state ib_state) 589 { 590 switch (ib_state) { 591 case IB_QPS_RESET: 592 case IB_QPS_INIT: 593 return C4IW_QP_STATE_IDLE; 594 case IB_QPS_RTS: 595 return C4IW_QP_STATE_RTS; 596 case IB_QPS_SQD: 597 return C4IW_QP_STATE_CLOSING; 598 case IB_QPS_SQE: 599 return C4IW_QP_STATE_TERMINATE; 600 case IB_QPS_ERR: 601 return C4IW_QP_STATE_ERROR; 602 default: 603 return -1; 604 } 605 } 606 607 static inline int to_ib_qp_state(int c4iw_qp_state) 608 { 609 switch (c4iw_qp_state) { 610 case C4IW_QP_STATE_IDLE: 611 return IB_QPS_INIT; 612 case C4IW_QP_STATE_RTS: 613 return IB_QPS_RTS; 614 case C4IW_QP_STATE_CLOSING: 615 return IB_QPS_SQD; 616 case C4IW_QP_STATE_TERMINATE: 617 return IB_QPS_SQE; 618 case C4IW_QP_STATE_ERROR: 619 return IB_QPS_ERR; 620 } 621 return IB_QPS_ERR; 622 } 623 624 static inline u32 c4iw_ib_to_tpt_access(int a) 625 { 626 return (a & IB_ACCESS_REMOTE_WRITE ? FW_RI_MEM_ACCESS_REM_WRITE : 0) | 627 (a & IB_ACCESS_REMOTE_READ ? FW_RI_MEM_ACCESS_REM_READ : 0) | 628 (a & IB_ACCESS_LOCAL_WRITE ? FW_RI_MEM_ACCESS_LOCAL_WRITE : 0) | 629 FW_RI_MEM_ACCESS_LOCAL_READ; 630 } 631 632 static inline u32 c4iw_ib_to_tpt_bind_access(int acc) 633 { 634 return (acc & IB_ACCESS_REMOTE_WRITE ? FW_RI_MEM_ACCESS_REM_WRITE : 0) | 635 (acc & IB_ACCESS_REMOTE_READ ? FW_RI_MEM_ACCESS_REM_READ : 0); 636 } 637 638 enum c4iw_mmid_state { 639 C4IW_STAG_STATE_VALID, 640 C4IW_STAG_STATE_INVALID 641 }; 642 643 #define C4IW_NODE_DESC "cxgb4 Chelsio Communications" 644 645 #define MPA_KEY_REQ "MPA ID Req Frame" 646 #define MPA_KEY_REP "MPA ID Rep Frame" 647 648 #define MPA_MAX_PRIVATE_DATA 256 649 #define MPA_ENHANCED_RDMA_CONN 0x10 650 #define MPA_REJECT 0x20 651 #define MPA_CRC 0x40 652 #define MPA_MARKERS 0x80 653 #define MPA_FLAGS_MASK 0xE0 654 655 #define MPA_V2_PEER2PEER_MODEL 0x8000 656 #define MPA_V2_ZERO_LEN_FPDU_RTR 0x4000 657 #define MPA_V2_RDMA_WRITE_RTR 0x8000 658 #define MPA_V2_RDMA_READ_RTR 0x4000 659 #define MPA_V2_IRD_ORD_MASK 0x3FFF 660 661 #define c4iw_put_ep(ep) { \ 662 PDBG("put_ep (via %s:%u) ep %p refcnt %d\n", __func__, __LINE__, \ 663 ep, atomic_read(&((ep)->kref.refcount))); \ 664 WARN_ON(atomic_read(&((ep)->kref.refcount)) < 1); \ 665 kref_put(&((ep)->kref), _c4iw_free_ep); \ 666 } 667 668 #define c4iw_get_ep(ep) { \ 669 PDBG("get_ep (via %s:%u) ep %p, refcnt %d\n", __func__, __LINE__, \ 670 ep, atomic_read(&((ep)->kref.refcount))); \ 671 kref_get(&((ep)->kref)); \ 672 } 673 void _c4iw_free_ep(struct kref *kref); 674 675 struct mpa_message { 676 u8 key[16]; 677 u8 flags; 678 u8 revision; 679 __be16 private_data_size; 680 u8 private_data[0]; 681 }; 682 683 struct mpa_v2_conn_params { 684 __be16 ird; 685 __be16 ord; 686 }; 687 688 struct terminate_message { 689 u8 layer_etype; 690 u8 ecode; 691 __be16 hdrct_rsvd; 692 u8 len_hdrs[0]; 693 }; 694 695 #define TERM_MAX_LENGTH (sizeof(struct terminate_message) + 2 + 18 + 28) 696 697 enum c4iw_layers_types { 698 LAYER_RDMAP = 0x00, 699 LAYER_DDP = 0x10, 700 LAYER_MPA = 0x20, 701 RDMAP_LOCAL_CATA = 0x00, 702 RDMAP_REMOTE_PROT = 0x01, 703 RDMAP_REMOTE_OP = 0x02, 704 DDP_LOCAL_CATA = 0x00, 705 DDP_TAGGED_ERR = 0x01, 706 DDP_UNTAGGED_ERR = 0x02, 707 DDP_LLP = 0x03 708 }; 709 710 enum c4iw_rdma_ecodes { 711 RDMAP_INV_STAG = 0x00, 712 RDMAP_BASE_BOUNDS = 0x01, 713 RDMAP_ACC_VIOL = 0x02, 714 RDMAP_STAG_NOT_ASSOC = 0x03, 715 RDMAP_TO_WRAP = 0x04, 716 RDMAP_INV_VERS = 0x05, 717 RDMAP_INV_OPCODE = 0x06, 718 RDMAP_STREAM_CATA = 0x07, 719 RDMAP_GLOBAL_CATA = 0x08, 720 RDMAP_CANT_INV_STAG = 0x09, 721 RDMAP_UNSPECIFIED = 0xff 722 }; 723 724 enum c4iw_ddp_ecodes { 725 DDPT_INV_STAG = 0x00, 726 DDPT_BASE_BOUNDS = 0x01, 727 DDPT_STAG_NOT_ASSOC = 0x02, 728 DDPT_TO_WRAP = 0x03, 729 DDPT_INV_VERS = 0x04, 730 DDPU_INV_QN = 0x01, 731 DDPU_INV_MSN_NOBUF = 0x02, 732 DDPU_INV_MSN_RANGE = 0x03, 733 DDPU_INV_MO = 0x04, 734 DDPU_MSG_TOOBIG = 0x05, 735 DDPU_INV_VERS = 0x06 736 }; 737 738 enum c4iw_mpa_ecodes { 739 MPA_CRC_ERR = 0x02, 740 MPA_MARKER_ERR = 0x03, 741 MPA_LOCAL_CATA = 0x05, 742 MPA_INSUFF_IRD = 0x06, 743 MPA_NOMATCH_RTR = 0x07, 744 }; 745 746 enum c4iw_ep_state { 747 IDLE = 0, 748 LISTEN, 749 CONNECTING, 750 MPA_REQ_WAIT, 751 MPA_REQ_SENT, 752 MPA_REQ_RCVD, 753 MPA_REP_SENT, 754 FPDU_MODE, 755 ABORTING, 756 CLOSING, 757 MORIBUND, 758 DEAD, 759 }; 760 761 enum c4iw_ep_flags { 762 PEER_ABORT_IN_PROGRESS = 0, 763 ABORT_REQ_IN_PROGRESS = 1, 764 RELEASE_RESOURCES = 2, 765 CLOSE_SENT = 3, 766 TIMEOUT = 4, 767 QP_REFERENCED = 5, 768 RELEASE_MAPINFO = 6, 769 }; 770 771 enum c4iw_ep_history { 772 ACT_OPEN_REQ = 0, 773 ACT_OFLD_CONN = 1, 774 ACT_OPEN_RPL = 2, 775 ACT_ESTAB = 3, 776 PASS_ACCEPT_REQ = 4, 777 PASS_ESTAB = 5, 778 ABORT_UPCALL = 6, 779 ESTAB_UPCALL = 7, 780 CLOSE_UPCALL = 8, 781 ULP_ACCEPT = 9, 782 ULP_REJECT = 10, 783 TIMEDOUT = 11, 784 PEER_ABORT = 12, 785 PEER_CLOSE = 13, 786 CONNREQ_UPCALL = 14, 787 ABORT_CONN = 15, 788 DISCONN_UPCALL = 16, 789 EP_DISC_CLOSE = 17, 790 EP_DISC_ABORT = 18, 791 CONN_RPL_UPCALL = 19, 792 ACT_RETRY_NOMEM = 20, 793 ACT_RETRY_INUSE = 21 794 }; 795 796 struct c4iw_ep_common { 797 struct iw_cm_id *cm_id; 798 struct c4iw_qp *qp; 799 struct c4iw_dev *dev; 800 enum c4iw_ep_state state; 801 struct kref kref; 802 struct mutex mutex; 803 struct sockaddr_storage local_addr; 804 struct sockaddr_storage remote_addr; 805 struct sockaddr_storage mapped_local_addr; 806 struct sockaddr_storage mapped_remote_addr; 807 struct c4iw_wr_wait wr_wait; 808 unsigned long flags; 809 unsigned long history; 810 }; 811 812 struct c4iw_listen_ep { 813 struct c4iw_ep_common com; 814 unsigned int stid; 815 int backlog; 816 }; 817 818 struct c4iw_ep { 819 struct c4iw_ep_common com; 820 struct c4iw_ep *parent_ep; 821 struct timer_list timer; 822 struct list_head entry; 823 unsigned int atid; 824 u32 hwtid; 825 u32 snd_seq; 826 u32 rcv_seq; 827 struct l2t_entry *l2t; 828 struct dst_entry *dst; 829 struct sk_buff *mpa_skb; 830 struct c4iw_mpa_attributes mpa_attr; 831 u8 mpa_pkt[sizeof(struct mpa_message) + MPA_MAX_PRIVATE_DATA]; 832 unsigned int mpa_pkt_len; 833 u32 ird; 834 u32 ord; 835 u32 smac_idx; 836 u32 tx_chan; 837 u32 mtu; 838 u16 mss; 839 u16 emss; 840 u16 plen; 841 u16 rss_qid; 842 u16 txq_idx; 843 u16 ctrlq_idx; 844 u8 tos; 845 u8 retry_with_mpa_v1; 846 u8 tried_with_mpa_v1; 847 unsigned int retry_count; 848 int snd_win; 849 int rcv_win; 850 }; 851 852 static inline void print_addr(struct c4iw_ep_common *epc, const char *func, 853 const char *msg) 854 { 855 856 #define SINA(a) (&(((struct sockaddr_in *)(a))->sin_addr.s_addr)) 857 #define SINP(a) ntohs(((struct sockaddr_in *)(a))->sin_port) 858 #define SIN6A(a) (&(((struct sockaddr_in6 *)(a))->sin6_addr)) 859 #define SIN6P(a) ntohs(((struct sockaddr_in6 *)(a))->sin6_port) 860 861 if (c4iw_debug) { 862 switch (epc->local_addr.ss_family) { 863 case AF_INET: 864 PDBG("%s %s %pI4:%u/%u <-> %pI4:%u/%u\n", 865 func, msg, SINA(&epc->local_addr), 866 SINP(&epc->local_addr), 867 SINP(&epc->mapped_local_addr), 868 SINA(&epc->remote_addr), 869 SINP(&epc->remote_addr), 870 SINP(&epc->mapped_remote_addr)); 871 break; 872 case AF_INET6: 873 PDBG("%s %s %pI6:%u/%u <-> %pI6:%u/%u\n", 874 func, msg, SIN6A(&epc->local_addr), 875 SIN6P(&epc->local_addr), 876 SIN6P(&epc->mapped_local_addr), 877 SIN6A(&epc->remote_addr), 878 SIN6P(&epc->remote_addr), 879 SIN6P(&epc->mapped_remote_addr)); 880 break; 881 default: 882 break; 883 } 884 } 885 #undef SINA 886 #undef SINP 887 #undef SIN6A 888 #undef SIN6P 889 } 890 891 static inline struct c4iw_ep *to_ep(struct iw_cm_id *cm_id) 892 { 893 return cm_id->provider_data; 894 } 895 896 static inline struct c4iw_listen_ep *to_listen_ep(struct iw_cm_id *cm_id) 897 { 898 return cm_id->provider_data; 899 } 900 901 static inline int compute_wscale(int win) 902 { 903 int wscale = 0; 904 905 while (wscale < 14 && (65535<<wscale) < win) 906 wscale++; 907 return wscale; 908 } 909 910 static inline int ocqp_supported(const struct cxgb4_lld_info *infop) 911 { 912 #if defined(__i386__) || defined(__x86_64__) || defined(CONFIG_PPC64) 913 return infop->vr->ocq.size > 0; 914 #else 915 return 0; 916 #endif 917 } 918 919 u32 c4iw_id_alloc(struct c4iw_id_table *alloc); 920 void c4iw_id_free(struct c4iw_id_table *alloc, u32 obj); 921 int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num, 922 u32 reserved, u32 flags); 923 void c4iw_id_table_free(struct c4iw_id_table *alloc); 924 925 typedef int (*c4iw_handler_func)(struct c4iw_dev *dev, struct sk_buff *skb); 926 927 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, 928 struct l2t_entry *l2t); 929 void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qpid, 930 struct c4iw_dev_ucontext *uctx); 931 u32 c4iw_get_resource(struct c4iw_id_table *id_table); 932 void c4iw_put_resource(struct c4iw_id_table *id_table, u32 entry); 933 int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt, u32 nr_pdid); 934 int c4iw_init_ctrl_qp(struct c4iw_rdev *rdev); 935 int c4iw_pblpool_create(struct c4iw_rdev *rdev); 936 int c4iw_rqtpool_create(struct c4iw_rdev *rdev); 937 int c4iw_ocqp_pool_create(struct c4iw_rdev *rdev); 938 void c4iw_pblpool_destroy(struct c4iw_rdev *rdev); 939 void c4iw_rqtpool_destroy(struct c4iw_rdev *rdev); 940 void c4iw_ocqp_pool_destroy(struct c4iw_rdev *rdev); 941 void c4iw_destroy_resource(struct c4iw_resource *rscp); 942 int c4iw_destroy_ctrl_qp(struct c4iw_rdev *rdev); 943 int c4iw_register_device(struct c4iw_dev *dev); 944 void c4iw_unregister_device(struct c4iw_dev *dev); 945 int __init c4iw_cm_init(void); 946 void c4iw_cm_term(void); 947 void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev, 948 struct c4iw_dev_ucontext *uctx); 949 void c4iw_init_dev_ucontext(struct c4iw_rdev *rdev, 950 struct c4iw_dev_ucontext *uctx); 951 int c4iw_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc); 952 int c4iw_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, 953 struct ib_send_wr **bad_wr); 954 int c4iw_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr, 955 struct ib_recv_wr **bad_wr); 956 int c4iw_bind_mw(struct ib_qp *qp, struct ib_mw *mw, 957 struct ib_mw_bind *mw_bind); 958 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param); 959 int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog); 960 int c4iw_destroy_listen(struct iw_cm_id *cm_id); 961 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param); 962 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len); 963 void c4iw_qp_add_ref(struct ib_qp *qp); 964 void c4iw_qp_rem_ref(struct ib_qp *qp); 965 void c4iw_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list); 966 struct ib_fast_reg_page_list *c4iw_alloc_fastreg_pbl( 967 struct ib_device *device, 968 int page_list_len); 969 struct ib_mr *c4iw_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth); 970 int c4iw_dealloc_mw(struct ib_mw *mw); 971 struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type); 972 struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start, 973 u64 length, u64 virt, int acc, 974 struct ib_udata *udata); 975 struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc); 976 struct ib_mr *c4iw_register_phys_mem(struct ib_pd *pd, 977 struct ib_phys_buf *buffer_list, 978 int num_phys_buf, 979 int acc, 980 u64 *iova_start); 981 int c4iw_reregister_phys_mem(struct ib_mr *mr, 982 int mr_rereg_mask, 983 struct ib_pd *pd, 984 struct ib_phys_buf *buffer_list, 985 int num_phys_buf, 986 int acc, u64 *iova_start); 987 int c4iw_dereg_mr(struct ib_mr *ib_mr); 988 int c4iw_destroy_cq(struct ib_cq *ib_cq); 989 struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries, 990 int vector, 991 struct ib_ucontext *ib_context, 992 struct ib_udata *udata); 993 int c4iw_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata); 994 int c4iw_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags); 995 int c4iw_destroy_qp(struct ib_qp *ib_qp); 996 struct ib_qp *c4iw_create_qp(struct ib_pd *pd, 997 struct ib_qp_init_attr *attrs, 998 struct ib_udata *udata); 999 int c4iw_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 1000 int attr_mask, struct ib_udata *udata); 1001 int c4iw_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 1002 int attr_mask, struct ib_qp_init_attr *init_attr); 1003 struct ib_qp *c4iw_get_qp(struct ib_device *dev, int qpn); 1004 u32 c4iw_rqtpool_alloc(struct c4iw_rdev *rdev, int size); 1005 void c4iw_rqtpool_free(struct c4iw_rdev *rdev, u32 addr, int size); 1006 u32 c4iw_pblpool_alloc(struct c4iw_rdev *rdev, int size); 1007 void c4iw_pblpool_free(struct c4iw_rdev *rdev, u32 addr, int size); 1008 u32 c4iw_ocqp_pool_alloc(struct c4iw_rdev *rdev, int size); 1009 void c4iw_ocqp_pool_free(struct c4iw_rdev *rdev, u32 addr, int size); 1010 int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb); 1011 void c4iw_flush_hw_cq(struct c4iw_cq *chp); 1012 void c4iw_count_rcqes(struct t4_cq *cq, struct t4_wq *wq, int *count); 1013 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp); 1014 int c4iw_flush_rq(struct t4_wq *wq, struct t4_cq *cq, int count); 1015 int c4iw_flush_sq(struct c4iw_qp *qhp); 1016 int c4iw_ev_handler(struct c4iw_dev *rnicp, u32 qid); 1017 u16 c4iw_rqes_posted(struct c4iw_qp *qhp); 1018 int c4iw_post_terminate(struct c4iw_qp *qhp, struct t4_cqe *err_cqe); 1019 u32 c4iw_get_cqid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx); 1020 void c4iw_put_cqid(struct c4iw_rdev *rdev, u32 qid, 1021 struct c4iw_dev_ucontext *uctx); 1022 u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx); 1023 void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qid, 1024 struct c4iw_dev_ucontext *uctx); 1025 void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe); 1026 1027 extern struct cxgb4_client t4c_client; 1028 extern c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS]; 1029 extern void c4iw_log_wr_stats(struct t4_wq *wq, struct t4_cqe *cqe); 1030 extern int c4iw_wr_log; 1031 extern int db_fc_threshold; 1032 extern int db_coalescing_threshold; 1033 extern int use_dsgl; 1034 1035 1036 #endif 1037