1 /* 2 * Copyright (c) 2009-2013, 2016 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 * 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 <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include "opt_inet.h" 36 37 #ifdef TCP_OFFLOAD 38 #include <sys/types.h> 39 #include <sys/malloc.h> 40 #include <sys/socket.h> 41 #include <sys/socketvar.h> 42 #include <sys/sockio.h> 43 #include <sys/taskqueue.h> 44 #include <netinet/in.h> 45 #include <net/route.h> 46 47 #include <netinet/in_systm.h> 48 #include <netinet/in_pcb.h> 49 #include <netinet/ip.h> 50 #include <netinet/in_fib.h> 51 #include <netinet/ip_var.h> 52 #include <netinet/tcp_var.h> 53 #include <netinet/tcp.h> 54 #include <netinet/tcpip.h> 55 56 #include <netinet/toecore.h> 57 58 struct sge_iq; 59 struct rss_header; 60 struct cpl_set_tcb_rpl; 61 #include <linux/types.h> 62 #include "offload.h" 63 #include "tom/t4_tom.h" 64 65 #define TOEPCB(so) ((struct toepcb *)(so_sototcpcb((so))->t_toe)) 66 67 #include "iw_cxgbe.h" 68 #include <linux/module.h> 69 #include <linux/workqueue.h> 70 #include <linux/notifier.h> 71 #include <linux/inetdevice.h> 72 #include <linux/if_vlan.h> 73 #include <net/netevent.h> 74 75 static spinlock_t req_lock; 76 static TAILQ_HEAD(c4iw_ep_list, c4iw_ep_common) req_list; 77 static struct work_struct c4iw_task; 78 static struct workqueue_struct *c4iw_taskq; 79 static LIST_HEAD(timeout_list); 80 static spinlock_t timeout_lock; 81 82 static void process_req(struct work_struct *ctx); 83 static void start_ep_timer(struct c4iw_ep *ep); 84 static int stop_ep_timer(struct c4iw_ep *ep); 85 static int set_tcpinfo(struct c4iw_ep *ep); 86 static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc); 87 static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state tostate); 88 static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state tostate); 89 static void *alloc_ep(int size, gfp_t flags); 90 void __free_ep(struct c4iw_ep_common *epc); 91 static int find_route(__be32 local_ip, __be32 peer_ip, __be16 local_port, 92 __be16 peer_port, u8 tos, struct nhop4_extended *pnh4); 93 static int close_socket(struct c4iw_ep_common *epc, int close); 94 static int shutdown_socket(struct c4iw_ep_common *epc); 95 static void abort_socket(struct c4iw_ep *ep); 96 static void send_mpa_req(struct c4iw_ep *ep); 97 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen); 98 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen); 99 static void close_complete_upcall(struct c4iw_ep *ep, int status); 100 static int send_abort(struct c4iw_ep *ep); 101 static void peer_close_upcall(struct c4iw_ep *ep); 102 static void peer_abort_upcall(struct c4iw_ep *ep); 103 static void connect_reply_upcall(struct c4iw_ep *ep, int status); 104 static int connect_request_upcall(struct c4iw_ep *ep); 105 static void established_upcall(struct c4iw_ep *ep); 106 static int process_mpa_reply(struct c4iw_ep *ep); 107 static int process_mpa_request(struct c4iw_ep *ep); 108 static void process_peer_close(struct c4iw_ep *ep); 109 static void process_conn_error(struct c4iw_ep *ep); 110 static void process_close_complete(struct c4iw_ep *ep); 111 static void ep_timeout(unsigned long arg); 112 static void init_sock(struct c4iw_ep_common *epc); 113 static void process_data(struct c4iw_ep *ep); 114 static void process_connected(struct c4iw_ep *ep); 115 static int c4iw_so_upcall(struct socket *so, void *arg, int waitflag); 116 static void process_socket_event(struct c4iw_ep *ep); 117 static void release_ep_resources(struct c4iw_ep *ep); 118 119 #define START_EP_TIMER(ep) \ 120 do { \ 121 CTR3(KTR_IW_CXGBE, "start_ep_timer (%s:%d) ep %p", \ 122 __func__, __LINE__, (ep)); \ 123 start_ep_timer(ep); \ 124 } while (0) 125 126 #define STOP_EP_TIMER(ep) \ 127 ({ \ 128 CTR3(KTR_IW_CXGBE, "stop_ep_timer (%s:%d) ep %p", \ 129 __func__, __LINE__, (ep)); \ 130 stop_ep_timer(ep); \ 131 }) 132 133 #ifdef KTR 134 static char *states[] = { 135 "idle", 136 "listen", 137 "connecting", 138 "mpa_wait_req", 139 "mpa_req_sent", 140 "mpa_req_rcvd", 141 "mpa_rep_sent", 142 "fpdu_mode", 143 "aborting", 144 "closing", 145 "moribund", 146 "dead", 147 NULL, 148 }; 149 #endif 150 151 152 static void deref_cm_id(struct c4iw_ep_common *epc) 153 { 154 epc->cm_id->rem_ref(epc->cm_id); 155 epc->cm_id = NULL; 156 set_bit(CM_ID_DEREFED, &epc->history); 157 } 158 159 static void ref_cm_id(struct c4iw_ep_common *epc) 160 { 161 set_bit(CM_ID_REFED, &epc->history); 162 epc->cm_id->add_ref(epc->cm_id); 163 } 164 165 static void deref_qp(struct c4iw_ep *ep) 166 { 167 c4iw_qp_rem_ref(&ep->com.qp->ibqp); 168 clear_bit(QP_REFERENCED, &ep->com.flags); 169 set_bit(QP_DEREFED, &ep->com.history); 170 } 171 172 static void ref_qp(struct c4iw_ep *ep) 173 { 174 set_bit(QP_REFERENCED, &ep->com.flags); 175 set_bit(QP_REFED, &ep->com.history); 176 c4iw_qp_add_ref(&ep->com.qp->ibqp); 177 } 178 179 static void 180 process_req(struct work_struct *ctx) 181 { 182 struct c4iw_ep_common *epc; 183 184 spin_lock(&req_lock); 185 while (!TAILQ_EMPTY(&req_list)) { 186 epc = TAILQ_FIRST(&req_list); 187 TAILQ_REMOVE(&req_list, epc, entry); 188 epc->entry.tqe_prev = NULL; 189 spin_unlock(&req_lock); 190 if (epc->so) 191 process_socket_event((struct c4iw_ep *)epc); 192 c4iw_put_ep(epc); 193 spin_lock(&req_lock); 194 } 195 spin_unlock(&req_lock); 196 } 197 198 /* 199 * XXX: doesn't belong here in the iWARP driver. 200 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is 201 * set. Is this a valid assumption for active open? 202 */ 203 static int 204 set_tcpinfo(struct c4iw_ep *ep) 205 { 206 struct socket *so = ep->com.so; 207 struct inpcb *inp = sotoinpcb(so); 208 struct tcpcb *tp; 209 struct toepcb *toep; 210 int rc = 0; 211 212 INP_WLOCK(inp); 213 tp = intotcpcb(inp); 214 if ((tp->t_flags & TF_TOE) == 0) { 215 rc = EINVAL; 216 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n", 217 __func__, so, ep); 218 goto done; 219 } 220 toep = TOEPCB(so); 221 222 ep->hwtid = toep->tid; 223 ep->snd_seq = tp->snd_nxt; 224 ep->rcv_seq = tp->rcv_nxt; 225 ep->emss = max(tp->t_maxseg, 128); 226 done: 227 INP_WUNLOCK(inp); 228 return (rc); 229 230 } 231 232 static int 233 find_route(__be32 local_ip, __be32 peer_ip, __be16 local_port, 234 __be16 peer_port, u8 tos, struct nhop4_extended *pnh4) 235 { 236 struct in_addr addr; 237 int err; 238 239 CTR5(KTR_IW_CXGBE, "%s:frtB %x, %x, %d, %d", __func__, local_ip, 240 peer_ip, ntohs(local_port), ntohs(peer_port)); 241 242 addr.s_addr = peer_ip; 243 err = fib4_lookup_nh_ext(RT_DEFAULT_FIB, addr, NHR_REF, 0, pnh4); 244 245 CTR2(KTR_IW_CXGBE, "%s:frtE %d", __func__, err); 246 return err; 247 } 248 249 static int 250 close_socket(struct c4iw_ep_common *epc, int close) 251 { 252 struct socket *so = epc->so; 253 int rc; 254 255 CTR4(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s", __func__, epc, so, 256 states[epc->state]); 257 258 SOCK_LOCK(so); 259 soupcall_clear(so, SO_RCV); 260 SOCK_UNLOCK(so); 261 262 if (close) 263 rc = soclose(so); 264 else 265 rc = soshutdown(so, SHUT_WR | SHUT_RD); 266 epc->so = NULL; 267 268 return (rc); 269 } 270 271 static int 272 shutdown_socket(struct c4iw_ep_common *epc) 273 { 274 275 CTR4(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s", __func__, epc->so, epc, 276 states[epc->state]); 277 278 return (soshutdown(epc->so, SHUT_WR)); 279 } 280 281 static void 282 abort_socket(struct c4iw_ep *ep) 283 { 284 struct sockopt sopt; 285 int rc; 286 struct linger l; 287 288 CTR4(KTR_IW_CXGBE, "%s ep %p so %p state %s", __func__, ep, ep->com.so, 289 states[ep->com.state]); 290 291 l.l_onoff = 1; 292 l.l_linger = 0; 293 294 /* linger_time of 0 forces RST to be sent */ 295 sopt.sopt_dir = SOPT_SET; 296 sopt.sopt_level = SOL_SOCKET; 297 sopt.sopt_name = SO_LINGER; 298 sopt.sopt_val = (caddr_t)&l; 299 sopt.sopt_valsize = sizeof l; 300 sopt.sopt_td = NULL; 301 rc = sosetopt(ep->com.so, &sopt); 302 if (rc) { 303 log(LOG_ERR, "%s: can't set linger to 0, no RST! err %d\n", 304 __func__, rc); 305 } 306 } 307 308 static void 309 process_peer_close(struct c4iw_ep *ep) 310 { 311 struct c4iw_qp_attributes attrs; 312 int disconnect = 1; 313 int release = 0; 314 315 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep, 316 ep->com.so, states[ep->com.state]); 317 318 mutex_lock(&ep->com.mutex); 319 switch (ep->com.state) { 320 321 case MPA_REQ_WAIT: 322 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT CLOSING", 323 __func__, ep); 324 __state_set(&ep->com, CLOSING); 325 break; 326 327 case MPA_REQ_SENT: 328 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT CLOSING", 329 __func__, ep); 330 __state_set(&ep->com, DEAD); 331 connect_reply_upcall(ep, -ECONNABORTED); 332 333 disconnect = 0; 334 STOP_EP_TIMER(ep); 335 close_socket(&ep->com, 0); 336 deref_cm_id(&ep->com); 337 release = 1; 338 break; 339 340 case MPA_REQ_RCVD: 341 342 /* 343 * We're gonna mark this puppy DEAD, but keep 344 * the reference on it until the ULP accepts or 345 * rejects the CR. 346 */ 347 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING", 348 __func__, ep); 349 __state_set(&ep->com, CLOSING); 350 c4iw_get_ep(&ep->com); 351 break; 352 353 case MPA_REP_SENT: 354 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING", 355 __func__, ep); 356 __state_set(&ep->com, CLOSING); 357 break; 358 359 case FPDU_MODE: 360 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING", 361 __func__, ep); 362 START_EP_TIMER(ep); 363 __state_set(&ep->com, CLOSING); 364 attrs.next_state = C4IW_QP_STATE_CLOSING; 365 c4iw_modify_qp(ep->com.dev, ep->com.qp, 366 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 367 peer_close_upcall(ep); 368 break; 369 370 case ABORTING: 371 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)", 372 __func__, ep); 373 disconnect = 0; 374 break; 375 376 case CLOSING: 377 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND", 378 __func__, ep); 379 __state_set(&ep->com, MORIBUND); 380 disconnect = 0; 381 break; 382 383 case MORIBUND: 384 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__, 385 ep); 386 STOP_EP_TIMER(ep); 387 if (ep->com.cm_id && ep->com.qp) { 388 attrs.next_state = C4IW_QP_STATE_IDLE; 389 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 390 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 391 } 392 close_socket(&ep->com, 0); 393 close_complete_upcall(ep, 0); 394 __state_set(&ep->com, DEAD); 395 release = 1; 396 disconnect = 0; 397 break; 398 399 case DEAD: 400 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)", 401 __func__, ep); 402 disconnect = 0; 403 break; 404 405 default: 406 panic("%s: ep %p state %d", __func__, ep, 407 ep->com.state); 408 break; 409 } 410 411 mutex_unlock(&ep->com.mutex); 412 413 if (disconnect) { 414 415 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep); 416 c4iw_ep_disconnect(ep, 0, M_NOWAIT); 417 } 418 if (release) { 419 420 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep); 421 c4iw_put_ep(&ep->com); 422 } 423 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep); 424 return; 425 } 426 427 static void 428 process_conn_error(struct c4iw_ep *ep) 429 { 430 struct c4iw_qp_attributes attrs; 431 int ret; 432 int state; 433 434 state = state_read(&ep->com); 435 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s", 436 __func__, ep, ep->com.so, ep->com.so->so_error, 437 states[ep->com.state]); 438 439 switch (state) { 440 441 case MPA_REQ_WAIT: 442 STOP_EP_TIMER(ep); 443 break; 444 445 case MPA_REQ_SENT: 446 STOP_EP_TIMER(ep); 447 connect_reply_upcall(ep, -ECONNRESET); 448 break; 449 450 case MPA_REP_SENT: 451 ep->com.rpl_err = ECONNRESET; 452 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep); 453 break; 454 455 case MPA_REQ_RCVD: 456 457 /* 458 * We're gonna mark this puppy DEAD, but keep 459 * the reference on it until the ULP accepts or 460 * rejects the CR. 461 */ 462 c4iw_get_ep(&ep->com); 463 break; 464 465 case MORIBUND: 466 case CLOSING: 467 STOP_EP_TIMER(ep); 468 /*FALLTHROUGH*/ 469 case FPDU_MODE: 470 471 if (ep->com.cm_id && ep->com.qp) { 472 473 attrs.next_state = C4IW_QP_STATE_ERROR; 474 ret = c4iw_modify_qp(ep->com.qp->rhp, 475 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 476 &attrs, 1); 477 if (ret) 478 log(LOG_ERR, 479 "%s - qp <- error failed!\n", 480 __func__); 481 } 482 peer_abort_upcall(ep); 483 break; 484 485 case ABORTING: 486 break; 487 488 case DEAD: 489 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!", 490 __func__, ep->com.so->so_error); 491 return; 492 493 default: 494 panic("%s: ep %p state %d", __func__, ep, state); 495 break; 496 } 497 498 if (state != ABORTING) { 499 500 CTR2(KTR_IW_CXGBE, "%s:pce1 %p", __func__, ep); 501 close_socket(&ep->com, 0); 502 state_set(&ep->com, DEAD); 503 c4iw_put_ep(&ep->com); 504 } 505 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep); 506 return; 507 } 508 509 static void 510 process_close_complete(struct c4iw_ep *ep) 511 { 512 struct c4iw_qp_attributes attrs; 513 int release = 0; 514 515 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep, 516 ep->com.so, states[ep->com.state]); 517 518 /* The cm_id may be null if we failed to connect */ 519 mutex_lock(&ep->com.mutex); 520 set_bit(CLOSE_CON_RPL, &ep->com.history); 521 522 switch (ep->com.state) { 523 524 case CLOSING: 525 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND", 526 __func__, ep); 527 __state_set(&ep->com, MORIBUND); 528 break; 529 530 case MORIBUND: 531 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__, 532 ep); 533 STOP_EP_TIMER(ep); 534 535 if ((ep->com.cm_id) && (ep->com.qp)) { 536 537 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE", 538 __func__, ep); 539 attrs.next_state = C4IW_QP_STATE_IDLE; 540 c4iw_modify_qp(ep->com.dev, 541 ep->com.qp, 542 C4IW_QP_ATTR_NEXT_STATE, 543 &attrs, 1); 544 } 545 546 if (ep->parent_ep) { 547 548 CTR2(KTR_IW_CXGBE, "%s:pcc3 %p", __func__, ep); 549 close_socket(&ep->com, 1); 550 } 551 else { 552 553 CTR2(KTR_IW_CXGBE, "%s:pcc4 %p", __func__, ep); 554 close_socket(&ep->com, 0); 555 } 556 close_complete_upcall(ep, 0); 557 __state_set(&ep->com, DEAD); 558 release = 1; 559 break; 560 561 case ABORTING: 562 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep); 563 break; 564 565 case DEAD: 566 default: 567 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep); 568 panic("%s:pcc6 %p DEAD", __func__, ep); 569 break; 570 } 571 mutex_unlock(&ep->com.mutex); 572 573 if (release) { 574 575 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p", __func__, ep); 576 c4iw_put_ep(&ep->com); 577 } 578 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep); 579 return; 580 } 581 582 static void 583 init_sock(struct c4iw_ep_common *epc) 584 { 585 int rc; 586 struct sockopt sopt; 587 struct socket *so = epc->so; 588 int on = 1; 589 590 SOCK_LOCK(so); 591 soupcall_set(so, SO_RCV, c4iw_so_upcall, epc); 592 so->so_state |= SS_NBIO; 593 SOCK_UNLOCK(so); 594 sopt.sopt_dir = SOPT_SET; 595 sopt.sopt_level = IPPROTO_TCP; 596 sopt.sopt_name = TCP_NODELAY; 597 sopt.sopt_val = (caddr_t)&on; 598 sopt.sopt_valsize = sizeof on; 599 sopt.sopt_td = NULL; 600 rc = sosetopt(so, &sopt); 601 if (rc) { 602 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n", 603 __func__, so, rc); 604 } 605 } 606 607 static void 608 process_data(struct c4iw_ep *ep) 609 { 610 struct sockaddr_in *local, *remote; 611 int disconnect = 0; 612 613 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sbused %d", __func__, 614 ep->com.so, ep, states[ep->com.state], sbused(&ep->com.so->so_rcv)); 615 616 switch (state_read(&ep->com)) { 617 case MPA_REQ_SENT: 618 disconnect = process_mpa_reply(ep); 619 break; 620 case MPA_REQ_WAIT: 621 in_getsockaddr(ep->com.so, (struct sockaddr **)&local); 622 in_getpeeraddr(ep->com.so, (struct sockaddr **)&remote); 623 ep->com.local_addr = *local; 624 ep->com.remote_addr = *remote; 625 free(local, M_SONAME); 626 free(remote, M_SONAME); 627 disconnect = process_mpa_request(ep); 628 break; 629 default: 630 if (sbused(&ep->com.so->so_rcv)) 631 log(LOG_ERR, "%s: Unexpected streaming data. ep %p, " 632 "state %d, so %p, so_state 0x%x, sbused %u\n", 633 __func__, ep, state_read(&ep->com), ep->com.so, 634 ep->com.so->so_state, sbused(&ep->com.so->so_rcv)); 635 break; 636 } 637 if (disconnect) 638 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); 639 640 } 641 642 static void 643 process_connected(struct c4iw_ep *ep) 644 { 645 646 if ((ep->com.so->so_state & SS_ISCONNECTED) && !ep->com.so->so_error) 647 send_mpa_req(ep); 648 else { 649 connect_reply_upcall(ep, -ep->com.so->so_error); 650 close_socket(&ep->com, 0); 651 state_set(&ep->com, DEAD); 652 c4iw_put_ep(&ep->com); 653 } 654 } 655 656 void 657 process_newconn(struct iw_cm_id *parent_cm_id, struct socket *child_so) 658 { 659 struct c4iw_ep *child_ep; 660 struct sockaddr_in *local; 661 struct sockaddr_in *remote; 662 struct c4iw_ep *parent_ep = parent_cm_id->provider_data; 663 664 if (!child_so) { 665 CTR4(KTR_IW_CXGBE, 666 "%s: parent so %p, parent ep %p, child so %p, invalid so", 667 __func__, parent_ep->com.so, parent_ep, child_so); 668 log(LOG_ERR, "%s: invalid child socket\n", __func__); 669 return; 670 } 671 child_ep = alloc_ep(sizeof(*child_ep), M_NOWAIT); 672 if (!child_ep) { 673 CTR3(KTR_IW_CXGBE, "%s: parent so %p, parent ep %p, ENOMEM", 674 __func__, parent_ep->com.so, parent_ep); 675 log(LOG_ERR, "%s: failed to allocate ep entry\n", __func__); 676 return; 677 } 678 SOCKBUF_LOCK(&child_so->so_rcv); 679 soupcall_set(child_so, SO_RCV, c4iw_so_upcall, child_ep); 680 SOCKBUF_UNLOCK(&child_so->so_rcv); 681 682 CTR5(KTR_IW_CXGBE, 683 "%s: parent so %p, parent ep %p, child so %p, child ep %p", 684 __func__, parent_ep->com.so, parent_ep, child_so, child_ep); 685 686 in_getsockaddr(child_so, (struct sockaddr **)&local); 687 in_getpeeraddr(child_so, (struct sockaddr **)&remote); 688 689 child_ep->com.local_addr = *local; 690 child_ep->com.remote_addr = *remote; 691 child_ep->com.dev = parent_ep->com.dev; 692 child_ep->com.so = child_so; 693 child_ep->com.cm_id = NULL; 694 child_ep->com.thread = parent_ep->com.thread; 695 child_ep->parent_ep = parent_ep; 696 697 free(local, M_SONAME); 698 free(remote, M_SONAME); 699 700 c4iw_get_ep(&parent_ep->com); 701 init_timer(&child_ep->timer); 702 state_set(&child_ep->com, MPA_REQ_WAIT); 703 START_EP_TIMER(child_ep); 704 705 /* maybe the request has already been queued up on the socket... */ 706 process_mpa_request(child_ep); 707 return; 708 } 709 710 static int 711 c4iw_so_upcall(struct socket *so, void *arg, int waitflag) 712 { 713 struct c4iw_ep *ep = arg; 714 715 spin_lock(&req_lock); 716 717 CTR6(KTR_IW_CXGBE, 718 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p", 719 __func__, so, so->so_state, ep, states[ep->com.state], 720 ep->com.entry.tqe_prev); 721 722 if (ep && ep->com.so && !ep->com.entry.tqe_prev) { 723 KASSERT(ep->com.so == so, ("%s: XXX review.", __func__)); 724 c4iw_get_ep(&ep->com); 725 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry); 726 queue_work(c4iw_taskq, &c4iw_task); 727 } 728 729 spin_unlock(&req_lock); 730 return (SU_OK); 731 } 732 733 static void 734 process_socket_event(struct c4iw_ep *ep) 735 { 736 int state = state_read(&ep->com); 737 struct socket *so = ep->com.so; 738 739 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, " 740 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state, 741 so->so_error, so->so_rcv.sb_state, ep, states[state]); 742 743 if (state == CONNECTING) { 744 process_connected(ep); 745 return; 746 } 747 748 if (state == LISTEN) { 749 /* socket listening events are handled at IWCM */ 750 CTR3(KTR_IW_CXGBE, "%s Invalid ep state:%u, ep:%p", __func__, 751 ep->com.state, ep); 752 BUG(); 753 return; 754 } 755 756 /* connection error */ 757 if (so->so_error) { 758 process_conn_error(ep); 759 return; 760 } 761 762 /* peer close */ 763 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state < CLOSING) { 764 process_peer_close(ep); 765 return; 766 } 767 768 /* close complete */ 769 if (so->so_state & SS_ISDISCONNECTED) { 770 process_close_complete(ep); 771 return; 772 } 773 774 /* rx data */ 775 process_data(ep); 776 } 777 778 SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD, 0, "iw_cxgbe driver parameters"); 779 780 int db_delay_usecs = 1; 781 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, db_delay_usecs, CTLFLAG_RWTUN, &db_delay_usecs, 0, 782 "Usecs to delay awaiting db fifo to drain"); 783 784 static int dack_mode = 0; 785 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RWTUN, &dack_mode, 0, 786 "Delayed ack mode (default = 0)"); 787 788 int c4iw_max_read_depth = 8; 789 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RWTUN, &c4iw_max_read_depth, 0, 790 "Per-connection max ORD/IRD (default = 8)"); 791 792 static int enable_tcp_timestamps; 793 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RWTUN, &enable_tcp_timestamps, 0, 794 "Enable tcp timestamps (default = 0)"); 795 796 static int enable_tcp_sack; 797 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RWTUN, &enable_tcp_sack, 0, 798 "Enable tcp SACK (default = 0)"); 799 800 static int enable_tcp_window_scaling = 1; 801 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RWTUN, &enable_tcp_window_scaling, 0, 802 "Enable tcp window scaling (default = 1)"); 803 804 int c4iw_debug = 1; 805 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RWTUN, &c4iw_debug, 0, 806 "Enable debug logging (default = 0)"); 807 808 static int peer2peer = 1; 809 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RWTUN, &peer2peer, 0, 810 "Support peer2peer ULPs (default = 1)"); 811 812 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 813 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RWTUN, &p2p_type, 0, 814 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)"); 815 816 static int ep_timeout_secs = 60; 817 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RWTUN, &ep_timeout_secs, 0, 818 "CM Endpoint operation timeout in seconds (default = 60)"); 819 820 static int mpa_rev = 1; 821 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RWTUN, &mpa_rev, 0, 822 "MPA Revision, 0 supports amso1100, 1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)"); 823 824 static int markers_enabled; 825 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RWTUN, &markers_enabled, 0, 826 "Enable MPA MARKERS (default(0) = disabled)"); 827 828 static int crc_enabled = 1; 829 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RWTUN, &crc_enabled, 0, 830 "Enable MPA CRC (default(1) = enabled)"); 831 832 static int rcv_win = 256 * 1024; 833 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RWTUN, &rcv_win, 0, 834 "TCP receive window in bytes (default = 256KB)"); 835 836 static int snd_win = 128 * 1024; 837 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RWTUN, &snd_win, 0, 838 "TCP send window in bytes (default = 128KB)"); 839 840 int db_fc_threshold = 2000; 841 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, db_fc_threshold, CTLFLAG_RWTUN, &db_fc_threshold, 0, 842 "QP count/threshold that triggers automatic"); 843 844 static void 845 start_ep_timer(struct c4iw_ep *ep) 846 { 847 848 if (timer_pending(&ep->timer)) { 849 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep); 850 printk(KERN_ERR "%s timer already started! ep %p\n", __func__, 851 ep); 852 return; 853 } 854 clear_bit(TIMEOUT, &ep->com.flags); 855 c4iw_get_ep(&ep->com); 856 ep->timer.expires = jiffies + ep_timeout_secs * HZ; 857 ep->timer.data = (unsigned long)ep; 858 ep->timer.function = ep_timeout; 859 add_timer(&ep->timer); 860 } 861 862 static int 863 stop_ep_timer(struct c4iw_ep *ep) 864 { 865 866 del_timer_sync(&ep->timer); 867 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 868 c4iw_put_ep(&ep->com); 869 return 0; 870 } 871 return 1; 872 } 873 874 static enum 875 c4iw_ep_state state_read(struct c4iw_ep_common *epc) 876 { 877 enum c4iw_ep_state state; 878 879 mutex_lock(&epc->mutex); 880 state = epc->state; 881 mutex_unlock(&epc->mutex); 882 883 return (state); 884 } 885 886 static void 887 __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) 888 { 889 890 epc->state = new; 891 } 892 893 static void 894 state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) 895 { 896 897 mutex_lock(&epc->mutex); 898 __state_set(epc, new); 899 mutex_unlock(&epc->mutex); 900 } 901 902 static void * 903 alloc_ep(int size, gfp_t gfp) 904 { 905 struct c4iw_ep_common *epc; 906 907 epc = kzalloc(size, gfp); 908 if (epc == NULL) 909 return (NULL); 910 911 kref_init(&epc->kref); 912 mutex_init(&epc->mutex); 913 c4iw_init_wr_wait(&epc->wr_wait); 914 915 return (epc); 916 } 917 918 void 919 __free_ep(struct c4iw_ep_common *epc) 920 { 921 CTR2(KTR_IW_CXGBE, "%s:feB %p", __func__, epc); 922 KASSERT(!epc->so, ("%s warning ep->so %p \n", __func__, epc->so)); 923 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list!\n", __func__, epc)); 924 free(epc, M_DEVBUF); 925 CTR2(KTR_IW_CXGBE, "%s:feE %p", __func__, epc); 926 } 927 928 void _c4iw_free_ep(struct kref *kref) 929 { 930 struct c4iw_ep *ep; 931 struct c4iw_ep_common *epc; 932 933 ep = container_of(kref, struct c4iw_ep, com.kref); 934 epc = &ep->com; 935 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list", 936 __func__, epc)); 937 if (test_bit(QP_REFERENCED, &ep->com.flags)) 938 deref_qp(ep); 939 kfree(ep); 940 } 941 942 static void release_ep_resources(struct c4iw_ep *ep) 943 { 944 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep); 945 set_bit(RELEASE_RESOURCES, &ep->com.flags); 946 c4iw_put_ep(&ep->com); 947 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep); 948 } 949 950 static void 951 send_mpa_req(struct c4iw_ep *ep) 952 { 953 int mpalen; 954 struct mpa_message *mpa; 955 struct mpa_v2_conn_params mpa_v2_params; 956 struct mbuf *m; 957 char mpa_rev_to_use = mpa_rev; 958 int err; 959 960 if (ep->retry_with_mpa_v1) 961 mpa_rev_to_use = 1; 962 mpalen = sizeof(*mpa) + ep->plen; 963 if (mpa_rev_to_use == 2) 964 mpalen += sizeof(struct mpa_v2_conn_params); 965 966 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 967 if (mpa == NULL) { 968 failed: 969 connect_reply_upcall(ep, -ENOMEM); 970 return; 971 } 972 973 memset(mpa, 0, mpalen); 974 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 975 mpa->flags = (crc_enabled ? MPA_CRC : 0) | 976 (markers_enabled ? MPA_MARKERS : 0) | 977 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); 978 mpa->private_data_size = htons(ep->plen); 979 mpa->revision = mpa_rev_to_use; 980 981 if (mpa_rev_to_use == 1) { 982 ep->tried_with_mpa_v1 = 1; 983 ep->retry_with_mpa_v1 = 0; 984 } 985 986 if (mpa_rev_to_use == 2) { 987 mpa->private_data_size += 988 htons(sizeof(struct mpa_v2_conn_params)); 989 mpa_v2_params.ird = htons((u16)ep->ird); 990 mpa_v2_params.ord = htons((u16)ep->ord); 991 992 if (peer2peer) { 993 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 994 995 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 996 mpa_v2_params.ord |= 997 htons(MPA_V2_RDMA_WRITE_RTR); 998 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 999 mpa_v2_params.ord |= 1000 htons(MPA_V2_RDMA_READ_RTR); 1001 } 1002 } 1003 memcpy(mpa->private_data, &mpa_v2_params, 1004 sizeof(struct mpa_v2_conn_params)); 1005 1006 if (ep->plen) { 1007 1008 memcpy(mpa->private_data + 1009 sizeof(struct mpa_v2_conn_params), 1010 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1011 } 1012 } else { 1013 1014 if (ep->plen) 1015 memcpy(mpa->private_data, 1016 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1017 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep); 1018 } 1019 1020 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1021 if (m == NULL) { 1022 free(mpa, M_CXGBE); 1023 goto failed; 1024 } 1025 m_copyback(m, 0, mpalen, (void *)mpa); 1026 free(mpa, M_CXGBE); 1027 1028 err = sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1029 ep->com.thread); 1030 if (err) 1031 goto failed; 1032 1033 START_EP_TIMER(ep); 1034 state_set(&ep->com, MPA_REQ_SENT); 1035 ep->mpa_attr.initiator = 1; 1036 } 1037 1038 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 1039 { 1040 int mpalen ; 1041 struct mpa_message *mpa; 1042 struct mpa_v2_conn_params mpa_v2_params; 1043 struct mbuf *m; 1044 int err; 1045 1046 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid, 1047 ep->plen); 1048 1049 mpalen = sizeof(*mpa) + plen; 1050 1051 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1052 1053 mpalen += sizeof(struct mpa_v2_conn_params); 1054 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep, 1055 ep->mpa_attr.version, mpalen); 1056 } 1057 1058 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1059 if (mpa == NULL) 1060 return (-ENOMEM); 1061 1062 memset(mpa, 0, mpalen); 1063 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1064 mpa->flags = MPA_REJECT; 1065 mpa->revision = mpa_rev; 1066 mpa->private_data_size = htons(plen); 1067 1068 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1069 1070 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1071 mpa->private_data_size += 1072 htons(sizeof(struct mpa_v2_conn_params)); 1073 mpa_v2_params.ird = htons(((u16)ep->ird) | 1074 (peer2peer ? MPA_V2_PEER2PEER_MODEL : 1075 0)); 1076 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 1077 (p2p_type == 1078 FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 1079 MPA_V2_RDMA_WRITE_RTR : p2p_type == 1080 FW_RI_INIT_P2PTYPE_READ_REQ ? 1081 MPA_V2_RDMA_READ_RTR : 0) : 0)); 1082 memcpy(mpa->private_data, &mpa_v2_params, 1083 sizeof(struct mpa_v2_conn_params)); 1084 1085 if (ep->plen) 1086 memcpy(mpa->private_data + 1087 sizeof(struct mpa_v2_conn_params), pdata, plen); 1088 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep, 1089 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen); 1090 } else 1091 if (plen) 1092 memcpy(mpa->private_data, pdata, plen); 1093 1094 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1095 if (m == NULL) { 1096 free(mpa, M_CXGBE); 1097 return (-ENOMEM); 1098 } 1099 m_copyback(m, 0, mpalen, (void *)mpa); 1100 free(mpa, M_CXGBE); 1101 1102 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread); 1103 if (!err) 1104 ep->snd_seq += mpalen; 1105 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err); 1106 return err; 1107 } 1108 1109 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 1110 { 1111 int mpalen; 1112 struct mpa_message *mpa; 1113 struct mbuf *m; 1114 struct mpa_v2_conn_params mpa_v2_params; 1115 int err; 1116 1117 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep); 1118 1119 mpalen = sizeof(*mpa) + plen; 1120 1121 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1122 1123 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep, 1124 ep->mpa_attr.version); 1125 mpalen += sizeof(struct mpa_v2_conn_params); 1126 } 1127 1128 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1129 if (mpa == NULL) 1130 return (-ENOMEM); 1131 1132 memset(mpa, 0, sizeof(*mpa)); 1133 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1134 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 1135 (markers_enabled ? MPA_MARKERS : 0); 1136 mpa->revision = ep->mpa_attr.version; 1137 mpa->private_data_size = htons(plen); 1138 1139 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1140 1141 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1142 mpa->private_data_size += 1143 htons(sizeof(struct mpa_v2_conn_params)); 1144 mpa_v2_params.ird = htons((u16)ep->ird); 1145 mpa_v2_params.ord = htons((u16)ep->ord); 1146 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep, 1147 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord); 1148 1149 if (peer2peer && (ep->mpa_attr.p2p_type != 1150 FW_RI_INIT_P2PTYPE_DISABLED)) { 1151 1152 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1153 1154 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1155 1156 mpa_v2_params.ord |= 1157 htons(MPA_V2_RDMA_WRITE_RTR); 1158 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d", 1159 __func__, ep, p2p_type, mpa_v2_params.ird, 1160 mpa_v2_params.ord); 1161 } 1162 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1163 1164 mpa_v2_params.ord |= 1165 htons(MPA_V2_RDMA_READ_RTR); 1166 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d", 1167 __func__, ep, p2p_type, mpa_v2_params.ird, 1168 mpa_v2_params.ord); 1169 } 1170 } 1171 1172 memcpy(mpa->private_data, &mpa_v2_params, 1173 sizeof(struct mpa_v2_conn_params)); 1174 1175 if (ep->plen) 1176 memcpy(mpa->private_data + 1177 sizeof(struct mpa_v2_conn_params), pdata, plen); 1178 } else 1179 if (plen) 1180 memcpy(mpa->private_data, pdata, plen); 1181 1182 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1183 if (m == NULL) { 1184 free(mpa, M_CXGBE); 1185 return (-ENOMEM); 1186 } 1187 m_copyback(m, 0, mpalen, (void *)mpa); 1188 free(mpa, M_CXGBE); 1189 1190 1191 state_set(&ep->com, MPA_REP_SENT); 1192 ep->snd_seq += mpalen; 1193 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1194 ep->com.thread); 1195 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err); 1196 return err; 1197 } 1198 1199 1200 1201 static void close_complete_upcall(struct c4iw_ep *ep, int status) 1202 { 1203 struct iw_cm_event event; 1204 1205 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep); 1206 memset(&event, 0, sizeof(event)); 1207 event.event = IW_CM_EVENT_CLOSE; 1208 event.status = status; 1209 1210 if (ep->com.cm_id) { 1211 1212 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep); 1213 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1214 deref_cm_id(&ep->com); 1215 set_bit(CLOSE_UPCALL, &ep->com.history); 1216 } 1217 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep); 1218 } 1219 1220 static int send_abort(struct c4iw_ep *ep) 1221 { 1222 int err; 1223 1224 CTR2(KTR_IW_CXGBE, "%s:abB %p", __func__, ep); 1225 abort_socket(ep); 1226 err = close_socket(&ep->com, 0); 1227 set_bit(ABORT_CONN, &ep->com.history); 1228 CTR2(KTR_IW_CXGBE, "%s:abE %p", __func__, ep); 1229 return err; 1230 } 1231 1232 static void peer_close_upcall(struct c4iw_ep *ep) 1233 { 1234 struct iw_cm_event event; 1235 1236 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep); 1237 memset(&event, 0, sizeof(event)); 1238 event.event = IW_CM_EVENT_DISCONNECT; 1239 1240 if (ep->com.cm_id) { 1241 1242 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep); 1243 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1244 set_bit(DISCONN_UPCALL, &ep->com.history); 1245 } 1246 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep); 1247 } 1248 1249 static void peer_abort_upcall(struct c4iw_ep *ep) 1250 { 1251 struct iw_cm_event event; 1252 1253 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep); 1254 memset(&event, 0, sizeof(event)); 1255 event.event = IW_CM_EVENT_CLOSE; 1256 event.status = -ECONNRESET; 1257 1258 if (ep->com.cm_id) { 1259 1260 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep); 1261 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1262 deref_cm_id(&ep->com); 1263 set_bit(ABORT_UPCALL, &ep->com.history); 1264 } 1265 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep); 1266 } 1267 1268 static void connect_reply_upcall(struct c4iw_ep *ep, int status) 1269 { 1270 struct iw_cm_event event; 1271 1272 CTR3(KTR_IW_CXGBE, "%s:cruB %p", __func__, ep, status); 1273 memset(&event, 0, sizeof(event)); 1274 event.event = IW_CM_EVENT_CONNECT_REPLY; 1275 event.status = (status ==-ECONNABORTED)?-ECONNRESET: status; 1276 event.local_addr = ep->com.local_addr; 1277 event.remote_addr = ep->com.remote_addr; 1278 1279 if ((status == 0) || (status == -ECONNREFUSED)) { 1280 1281 if (!ep->tried_with_mpa_v1) { 1282 1283 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep); 1284 /* this means MPA_v2 is used */ 1285 event.private_data_len = ep->plen - 1286 sizeof(struct mpa_v2_conn_params); 1287 event.private_data = ep->mpa_pkt + 1288 sizeof(struct mpa_message) + 1289 sizeof(struct mpa_v2_conn_params); 1290 } else { 1291 1292 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep); 1293 /* this means MPA_v1 is used */ 1294 event.private_data_len = ep->plen; 1295 event.private_data = ep->mpa_pkt + 1296 sizeof(struct mpa_message); 1297 } 1298 } 1299 1300 if (ep->com.cm_id) { 1301 1302 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep); 1303 set_bit(CONN_RPL_UPCALL, &ep->com.history); 1304 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1305 } 1306 1307 if(status == -ECONNABORTED) { 1308 1309 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status); 1310 return; 1311 } 1312 1313 if (status < 0) { 1314 1315 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status); 1316 deref_cm_id(&ep->com); 1317 } 1318 1319 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep); 1320 } 1321 1322 static int connect_request_upcall(struct c4iw_ep *ep) 1323 { 1324 struct iw_cm_event event; 1325 int ret; 1326 1327 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep, 1328 ep->tried_with_mpa_v1); 1329 1330 memset(&event, 0, sizeof(event)); 1331 event.event = IW_CM_EVENT_CONNECT_REQUEST; 1332 event.local_addr = ep->com.local_addr; 1333 event.remote_addr = ep->com.remote_addr; 1334 event.provider_data = ep; 1335 event.so = ep->com.so; 1336 1337 if (!ep->tried_with_mpa_v1) { 1338 /* this means MPA_v2 is used */ 1339 event.ord = ep->ord; 1340 event.ird = ep->ird; 1341 event.private_data_len = ep->plen - 1342 sizeof(struct mpa_v2_conn_params); 1343 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 1344 sizeof(struct mpa_v2_conn_params); 1345 } else { 1346 1347 /* this means MPA_v1 is used. Send max supported */ 1348 event.ord = c4iw_max_read_depth; 1349 event.ird = c4iw_max_read_depth; 1350 event.private_data_len = ep->plen; 1351 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 1352 } 1353 1354 c4iw_get_ep(&ep->com); 1355 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, 1356 &event); 1357 if(ret) 1358 c4iw_put_ep(&ep->com); 1359 1360 set_bit(CONNREQ_UPCALL, &ep->com.history); 1361 c4iw_put_ep(&ep->parent_ep->com); 1362 return ret; 1363 } 1364 1365 static void established_upcall(struct c4iw_ep *ep) 1366 { 1367 struct iw_cm_event event; 1368 1369 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep); 1370 memset(&event, 0, sizeof(event)); 1371 event.event = IW_CM_EVENT_ESTABLISHED; 1372 event.ird = ep->ird; 1373 event.ord = ep->ord; 1374 1375 if (ep->com.cm_id) { 1376 1377 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep); 1378 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1379 set_bit(ESTAB_UPCALL, &ep->com.history); 1380 } 1381 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep); 1382 } 1383 1384 1385 /* 1386 * process_mpa_reply - process streaming mode MPA reply 1387 * 1388 * Returns: 1389 * 1390 * 0 upon success indicating a connect request was delivered to the ULP 1391 * or the mpa request is incomplete but valid so far. 1392 * 1393 * 1 if a failure requires the caller to close the connection. 1394 * 1395 * 2 if a failure requires the caller to abort the connection. 1396 */ 1397 static int process_mpa_reply(struct c4iw_ep *ep) 1398 { 1399 struct mpa_message *mpa; 1400 struct mpa_v2_conn_params *mpa_v2_params; 1401 u16 plen; 1402 u16 resp_ird, resp_ord; 1403 u8 rtr_mismatch = 0, insuff_ird = 0; 1404 struct c4iw_qp_attributes attrs; 1405 enum c4iw_qp_attr_mask mask; 1406 int err; 1407 struct mbuf *top, *m; 1408 int flags = MSG_DONTWAIT; 1409 struct uio uio; 1410 int disconnect = 0; 1411 1412 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep); 1413 1414 /* 1415 * Stop mpa timer. If it expired, then 1416 * we ignore the MPA reply. process_timeout() 1417 * will abort the connection. 1418 */ 1419 if (STOP_EP_TIMER(ep)) 1420 return 0; 1421 1422 uio.uio_resid = 1000000; 1423 uio.uio_td = ep->com.thread; 1424 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags); 1425 1426 if (err) { 1427 1428 if (err == EWOULDBLOCK) { 1429 1430 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep); 1431 START_EP_TIMER(ep); 1432 return 0; 1433 } 1434 err = -err; 1435 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep); 1436 goto err; 1437 } 1438 1439 if (ep->com.so->so_rcv.sb_mb) { 1440 1441 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep); 1442 printf("%s data after soreceive called! so %p sb_mb %p top %p\n", 1443 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top); 1444 } 1445 1446 m = top; 1447 1448 do { 1449 1450 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep); 1451 /* 1452 * If we get more than the supported amount of private data 1453 * then we must fail this connection. 1454 */ 1455 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) { 1456 1457 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep, 1458 ep->mpa_pkt_len + m->m_len); 1459 err = (-EINVAL); 1460 goto err_stop_timer; 1461 } 1462 1463 /* 1464 * copy the new data into our accumulation buffer. 1465 */ 1466 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len])); 1467 ep->mpa_pkt_len += m->m_len; 1468 if (!m->m_next) 1469 m = m->m_nextpkt; 1470 else 1471 m = m->m_next; 1472 } while (m); 1473 1474 m_freem(top); 1475 /* 1476 * if we don't even have the mpa message, then bail. 1477 */ 1478 if (ep->mpa_pkt_len < sizeof(*mpa)) { 1479 return 0; 1480 } 1481 mpa = (struct mpa_message *) ep->mpa_pkt; 1482 1483 /* Validate MPA header. */ 1484 if (mpa->revision > mpa_rev) { 1485 1486 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep, 1487 mpa->revision, mpa_rev); 1488 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, " 1489 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1490 err = -EPROTO; 1491 goto err_stop_timer; 1492 } 1493 1494 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1495 1496 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep); 1497 err = -EPROTO; 1498 goto err_stop_timer; 1499 } 1500 1501 plen = ntohs(mpa->private_data_size); 1502 1503 /* 1504 * Fail if there's too much private data. 1505 */ 1506 if (plen > MPA_MAX_PRIVATE_DATA) { 1507 1508 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep); 1509 err = -EPROTO; 1510 goto err_stop_timer; 1511 } 1512 1513 /* 1514 * If plen does not account for pkt size 1515 */ 1516 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1517 1518 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep); 1519 STOP_EP_TIMER(ep); 1520 err = -EPROTO; 1521 goto err_stop_timer; 1522 } 1523 1524 ep->plen = (u8) plen; 1525 1526 /* 1527 * If we don't have all the pdata yet, then bail. 1528 * We'll continue process when more data arrives. 1529 */ 1530 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) { 1531 1532 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep); 1533 return 0; 1534 } 1535 1536 if (mpa->flags & MPA_REJECT) { 1537 1538 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep); 1539 err = -ECONNREFUSED; 1540 goto err_stop_timer; 1541 } 1542 1543 /* 1544 * If we get here we have accumulated the entire mpa 1545 * start reply message including private data. And 1546 * the MPA header is valid. 1547 */ 1548 state_set(&ep->com, FPDU_MODE); 1549 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 1550 ep->mpa_attr.recv_marker_enabled = markers_enabled; 1551 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 1552 ep->mpa_attr.version = mpa->revision; 1553 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1554 1555 if (mpa->revision == 2) { 1556 1557 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep); 1558 ep->mpa_attr.enhanced_rdma_conn = 1559 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 1560 1561 if (ep->mpa_attr.enhanced_rdma_conn) { 1562 1563 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep); 1564 mpa_v2_params = (struct mpa_v2_conn_params *) 1565 (ep->mpa_pkt + sizeof(*mpa)); 1566 resp_ird = ntohs(mpa_v2_params->ird) & 1567 MPA_V2_IRD_ORD_MASK; 1568 resp_ord = ntohs(mpa_v2_params->ord) & 1569 MPA_V2_IRD_ORD_MASK; 1570 1571 /* 1572 * This is a double-check. Ideally, below checks are 1573 * not required since ird/ord stuff has been taken 1574 * care of in c4iw_accept_cr 1575 */ 1576 if ((ep->ird < resp_ord) || (ep->ord > resp_ird)) { 1577 1578 CTR2(KTR_IW_CXGBE, "%s:pmre %p", __func__, ep); 1579 err = -ENOMEM; 1580 ep->ird = resp_ord; 1581 ep->ord = resp_ird; 1582 insuff_ird = 1; 1583 } 1584 1585 if (ntohs(mpa_v2_params->ird) & 1586 MPA_V2_PEER2PEER_MODEL) { 1587 1588 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep); 1589 if (ntohs(mpa_v2_params->ord) & 1590 MPA_V2_RDMA_WRITE_RTR) { 1591 1592 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep); 1593 ep->mpa_attr.p2p_type = 1594 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 1595 } 1596 else if (ntohs(mpa_v2_params->ord) & 1597 MPA_V2_RDMA_READ_RTR) { 1598 1599 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep); 1600 ep->mpa_attr.p2p_type = 1601 FW_RI_INIT_P2PTYPE_READ_REQ; 1602 } 1603 } 1604 } 1605 } else { 1606 1607 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep); 1608 1609 if (mpa->revision == 1) { 1610 1611 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep); 1612 1613 if (peer2peer) { 1614 1615 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep); 1616 ep->mpa_attr.p2p_type = p2p_type; 1617 } 1618 } 1619 } 1620 1621 if (set_tcpinfo(ep)) { 1622 1623 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep); 1624 printf("%s set_tcpinfo error\n", __func__); 1625 goto err; 1626 } 1627 1628 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, " 1629 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__, 1630 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 1631 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 1632 ep->mpa_attr.p2p_type); 1633 1634 /* 1635 * If responder's RTR does not match with that of initiator, assign 1636 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 1637 * generated when moving QP to RTS state. 1638 * A TERM message will be sent after QP has moved to RTS state 1639 */ 1640 if ((ep->mpa_attr.version == 2) && peer2peer && 1641 (ep->mpa_attr.p2p_type != p2p_type)) { 1642 1643 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep); 1644 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1645 rtr_mismatch = 1; 1646 } 1647 1648 1649 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 1650 attrs.mpa_attr = ep->mpa_attr; 1651 attrs.max_ird = ep->ird; 1652 attrs.max_ord = ep->ord; 1653 attrs.llp_stream_handle = ep; 1654 attrs.next_state = C4IW_QP_STATE_RTS; 1655 1656 mask = C4IW_QP_ATTR_NEXT_STATE | 1657 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 1658 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 1659 1660 /* bind QP and TID with INIT_WR */ 1661 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 1662 1663 if (err) { 1664 1665 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep); 1666 goto err; 1667 } 1668 1669 /* 1670 * If responder's RTR requirement did not match with what initiator 1671 * supports, generate TERM message 1672 */ 1673 if (rtr_mismatch) { 1674 1675 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep); 1676 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 1677 attrs.layer_etype = LAYER_MPA | DDP_LLP; 1678 attrs.ecode = MPA_NOMATCH_RTR; 1679 attrs.next_state = C4IW_QP_STATE_TERMINATE; 1680 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1681 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); 1682 err = -ENOMEM; 1683 disconnect = 1; 1684 goto out; 1685 } 1686 1687 /* 1688 * Generate TERM if initiator IRD is not sufficient for responder 1689 * provided ORD. Currently, we do the same behaviour even when 1690 * responder provided IRD is also not sufficient as regards to 1691 * initiator ORD. 1692 */ 1693 if (insuff_ird) { 1694 1695 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep); 1696 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 1697 __func__); 1698 attrs.layer_etype = LAYER_MPA | DDP_LLP; 1699 attrs.ecode = MPA_INSUFF_IRD; 1700 attrs.next_state = C4IW_QP_STATE_TERMINATE; 1701 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1702 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); 1703 err = -ENOMEM; 1704 disconnect = 1; 1705 goto out; 1706 } 1707 goto out; 1708 err_stop_timer: 1709 STOP_EP_TIMER(ep); 1710 err: 1711 disconnect = 2; 1712 out: 1713 connect_reply_upcall(ep, err); 1714 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep); 1715 return disconnect; 1716 } 1717 1718 /* 1719 * process_mpa_request - process streaming mode MPA request 1720 * 1721 * Returns: 1722 * 1723 * 0 upon success indicating a connect request was delivered to the ULP 1724 * or the mpa request is incomplete but valid so far. 1725 * 1726 * 1 if a failure requires the caller to close the connection. 1727 * 1728 * 2 if a failure requires the caller to abort the connection. 1729 */ 1730 static int 1731 process_mpa_request(struct c4iw_ep *ep) 1732 { 1733 struct mpa_message *mpa; 1734 u16 plen; 1735 int flags = MSG_DONTWAIT; 1736 int rc; 1737 struct iovec iov; 1738 struct uio uio; 1739 enum c4iw_ep_state state = state_read(&ep->com); 1740 1741 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]); 1742 1743 if (state != MPA_REQ_WAIT) 1744 return 0; 1745 1746 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len]; 1747 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 1748 uio.uio_iov = &iov; 1749 uio.uio_iovcnt = 1; 1750 uio.uio_offset = 0; 1751 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 1752 uio.uio_segflg = UIO_SYSSPACE; 1753 uio.uio_rw = UIO_READ; 1754 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */ 1755 1756 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags); 1757 if (rc == EAGAIN) 1758 return 0; 1759 else if (rc) 1760 goto err_stop_timer; 1761 1762 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data", 1763 __func__, ep->com.so)); 1764 ep->mpa_pkt_len += uio.uio_offset; 1765 1766 /* 1767 * If we get more than the supported amount of private data then we must 1768 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another 1769 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last 1770 * byte is filled by the soreceive above. 1771 */ 1772 1773 /* Don't even have the MPA message. Wait for more data to arrive. */ 1774 if (ep->mpa_pkt_len < sizeof(*mpa)) 1775 return 0; 1776 mpa = (struct mpa_message *) ep->mpa_pkt; 1777 1778 /* 1779 * Validate MPA Header. 1780 */ 1781 if (mpa->revision > mpa_rev) { 1782 log(LOG_ERR, "%s: MPA version mismatch. Local = %d," 1783 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1784 goto err_stop_timer; 1785 } 1786 1787 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) 1788 goto err_stop_timer; 1789 1790 /* 1791 * Fail if there's too much private data. 1792 */ 1793 plen = ntohs(mpa->private_data_size); 1794 if (plen > MPA_MAX_PRIVATE_DATA) 1795 goto err_stop_timer; 1796 1797 /* 1798 * If plen does not account for pkt size 1799 */ 1800 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) 1801 goto err_stop_timer; 1802 1803 ep->plen = (u8) plen; 1804 1805 /* 1806 * If we don't have all the pdata yet, then bail. 1807 */ 1808 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 1809 return 0; 1810 1811 /* 1812 * If we get here we have accumulated the entire mpa 1813 * start reply message including private data. 1814 */ 1815 ep->mpa_attr.initiator = 0; 1816 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 1817 ep->mpa_attr.recv_marker_enabled = markers_enabled; 1818 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 1819 ep->mpa_attr.version = mpa->revision; 1820 if (mpa->revision == 1) 1821 ep->tried_with_mpa_v1 = 1; 1822 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1823 1824 if (mpa->revision == 2) { 1825 ep->mpa_attr.enhanced_rdma_conn = 1826 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 1827 if (ep->mpa_attr.enhanced_rdma_conn) { 1828 struct mpa_v2_conn_params *mpa_v2_params; 1829 u16 ird, ord; 1830 1831 mpa_v2_params = (void *)&ep->mpa_pkt[sizeof(*mpa)]; 1832 ird = ntohs(mpa_v2_params->ird); 1833 ord = ntohs(mpa_v2_params->ord); 1834 1835 ep->ird = ird & MPA_V2_IRD_ORD_MASK; 1836 ep->ord = ord & MPA_V2_IRD_ORD_MASK; 1837 if (ird & MPA_V2_PEER2PEER_MODEL && peer2peer) { 1838 if (ord & MPA_V2_RDMA_WRITE_RTR) { 1839 ep->mpa_attr.p2p_type = 1840 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 1841 } else if (ord & MPA_V2_RDMA_READ_RTR) { 1842 ep->mpa_attr.p2p_type = 1843 FW_RI_INIT_P2PTYPE_READ_REQ; 1844 } 1845 } 1846 } 1847 } else if (mpa->revision == 1 && peer2peer) 1848 ep->mpa_attr.p2p_type = p2p_type; 1849 1850 if (set_tcpinfo(ep)) 1851 goto err_stop_timer; 1852 1853 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, " 1854 "xmit_marker_enabled = %d, version = %d", __func__, 1855 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 1856 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); 1857 1858 state_set(&ep->com, MPA_REQ_RCVD); 1859 STOP_EP_TIMER(ep); 1860 1861 /* drive upcall */ 1862 mutex_lock(&ep->parent_ep->com.mutex); 1863 if (ep->parent_ep->com.state != DEAD) { 1864 if(connect_request_upcall(ep)) 1865 goto err_out; 1866 }else { 1867 goto err_out; 1868 } 1869 mutex_unlock(&ep->parent_ep->com.mutex); 1870 return 0; 1871 1872 err_stop_timer: 1873 STOP_EP_TIMER(ep); 1874 err_out: 1875 return 2; 1876 } 1877 1878 /* 1879 * Upcall from the adapter indicating data has been transmitted. 1880 * For us its just the single MPA request or reply. We can now free 1881 * the skb holding the mpa message. 1882 */ 1883 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 1884 { 1885 int err; 1886 struct c4iw_ep *ep = to_ep(cm_id); 1887 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep); 1888 int disconnect = 0; 1889 1890 if (state_read(&ep->com) == DEAD) { 1891 1892 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep); 1893 c4iw_put_ep(&ep->com); 1894 return -ECONNRESET; 1895 } 1896 set_bit(ULP_REJECT, &ep->com.history); 1897 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); 1898 1899 if (mpa_rev == 0) { 1900 1901 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep); 1902 disconnect = 2; 1903 } 1904 else { 1905 1906 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep); 1907 err = send_mpa_reject(ep, pdata, pdata_len); 1908 err = soshutdown(ep->com.so, 3); 1909 } 1910 c4iw_put_ep(&ep->com); 1911 if (disconnect) 1912 err = c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); 1913 CTR2(KTR_IW_CXGBE, "%s:crc4 %p", __func__, ep); 1914 return 0; 1915 } 1916 1917 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 1918 { 1919 int err; 1920 struct c4iw_qp_attributes attrs; 1921 enum c4iw_qp_attr_mask mask; 1922 struct c4iw_ep *ep = to_ep(cm_id); 1923 struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 1924 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 1925 int abort = 0; 1926 1927 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep); 1928 1929 if (state_read(&ep->com) == DEAD) { 1930 1931 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep); 1932 err = -ECONNRESET; 1933 goto err_out; 1934 } 1935 1936 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); 1937 BUG_ON(!qp); 1938 1939 set_bit(ULP_ACCEPT, &ep->com.history); 1940 1941 if ((conn_param->ord > c4iw_max_read_depth) || 1942 (conn_param->ird > c4iw_max_read_depth)) { 1943 1944 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep); 1945 err = -EINVAL; 1946 goto err_abort; 1947 } 1948 1949 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1950 1951 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep); 1952 1953 if (conn_param->ord > ep->ird) { 1954 1955 CTR2(KTR_IW_CXGBE, "%s:cac4 %p", __func__, ep); 1956 ep->ird = conn_param->ird; 1957 ep->ord = conn_param->ord; 1958 send_mpa_reject(ep, conn_param->private_data, 1959 conn_param->private_data_len); 1960 err = -ENOMEM; 1961 goto err_abort; 1962 } 1963 1964 if (conn_param->ird > ep->ord) { 1965 1966 CTR2(KTR_IW_CXGBE, "%s:cac5 %p", __func__, ep); 1967 1968 if (!ep->ord) { 1969 1970 CTR2(KTR_IW_CXGBE, "%s:cac6 %p", __func__, ep); 1971 conn_param->ird = 1; 1972 } 1973 else { 1974 CTR2(KTR_IW_CXGBE, "%s:cac7 %p", __func__, ep); 1975 err = -ENOMEM; 1976 goto err_abort; 1977 } 1978 } 1979 1980 } 1981 ep->ird = conn_param->ird; 1982 ep->ord = conn_param->ord; 1983 1984 if (ep->mpa_attr.version != 2) { 1985 1986 CTR2(KTR_IW_CXGBE, "%s:cac8 %p", __func__, ep); 1987 1988 if (peer2peer && ep->ird == 0) { 1989 1990 CTR2(KTR_IW_CXGBE, "%s:cac9 %p", __func__, ep); 1991 ep->ird = 1; 1992 } 1993 } 1994 1995 1996 ep->com.cm_id = cm_id; 1997 ref_cm_id(&ep->com); 1998 ep->com.qp = qp; 1999 ref_qp(ep); 2000 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2001 2002 /* bind QP to EP and move to RTS */ 2003 attrs.mpa_attr = ep->mpa_attr; 2004 attrs.max_ird = ep->ird; 2005 attrs.max_ord = ep->ord; 2006 attrs.llp_stream_handle = ep; 2007 attrs.next_state = C4IW_QP_STATE_RTS; 2008 2009 /* bind QP and TID with INIT_WR */ 2010 mask = C4IW_QP_ATTR_NEXT_STATE | 2011 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 2012 C4IW_QP_ATTR_MPA_ATTR | 2013 C4IW_QP_ATTR_MAX_IRD | 2014 C4IW_QP_ATTR_MAX_ORD; 2015 2016 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2017 2018 if (err) { 2019 2020 CTR2(KTR_IW_CXGBE, "%s:caca %p", __func__, ep); 2021 goto err_defef_cm_id; 2022 } 2023 err = send_mpa_reply(ep, conn_param->private_data, 2024 conn_param->private_data_len); 2025 2026 if (err) { 2027 2028 CTR2(KTR_IW_CXGBE, "%s:caca %p", __func__, ep); 2029 goto err_defef_cm_id; 2030 } 2031 2032 state_set(&ep->com, FPDU_MODE); 2033 established_upcall(ep); 2034 c4iw_put_ep(&ep->com); 2035 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep); 2036 return 0; 2037 err_defef_cm_id: 2038 deref_cm_id(&ep->com); 2039 err_abort: 2040 abort = 1; 2041 err_out: 2042 if (abort) 2043 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 2044 c4iw_put_ep(&ep->com); 2045 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep); 2046 return err; 2047 } 2048 2049 2050 2051 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2052 { 2053 int err = 0; 2054 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2055 struct c4iw_ep *ep = NULL; 2056 struct nhop4_extended nh4; 2057 struct toedev *tdev; 2058 2059 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id); 2060 2061 if ((conn_param->ord > c4iw_max_read_depth) || 2062 (conn_param->ird > c4iw_max_read_depth)) { 2063 2064 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id); 2065 err = -EINVAL; 2066 goto out; 2067 } 2068 ep = alloc_ep(sizeof(*ep), M_NOWAIT); 2069 2070 if (!ep) { 2071 2072 CTR2(KTR_IW_CXGBE, "%s:cc2 %p", __func__, cm_id); 2073 printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); 2074 err = -ENOMEM; 2075 goto out; 2076 } 2077 init_timer(&ep->timer); 2078 ep->plen = conn_param->private_data_len; 2079 2080 if (ep->plen) { 2081 2082 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep); 2083 memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 2084 conn_param->private_data, ep->plen); 2085 } 2086 ep->ird = conn_param->ird; 2087 ep->ord = conn_param->ord; 2088 2089 if (peer2peer && ep->ord == 0) { 2090 2091 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep); 2092 ep->ord = 1; 2093 } 2094 2095 ep->com.dev = dev; 2096 ep->com.cm_id = cm_id; 2097 ref_cm_id(&ep->com); 2098 ep->com.qp = get_qhp(dev, conn_param->qpn); 2099 2100 if (!ep->com.qp) { 2101 2102 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep); 2103 err = -EINVAL; 2104 goto fail2; 2105 } 2106 ref_qp(ep); 2107 ep->com.thread = curthread; 2108 ep->com.so = cm_id->so; 2109 2110 init_sock(&ep->com); 2111 2112 /* find a route */ 2113 err = find_route( 2114 cm_id->local_addr.sin_addr.s_addr, 2115 cm_id->remote_addr.sin_addr.s_addr, 2116 cm_id->local_addr.sin_port, 2117 cm_id->remote_addr.sin_port, 0, &nh4); 2118 2119 if (err) { 2120 2121 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep); 2122 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 2123 err = -EHOSTUNREACH; 2124 goto fail2; 2125 } 2126 2127 if (!(nh4.nh_ifp->if_capenable & IFCAP_TOE)) { 2128 2129 CTR2(KTR_IW_CXGBE, "%s:cc8 %p", __func__, ep); 2130 printf("%s - interface not TOE capable.\n", __func__); 2131 close_socket(&ep->com, 0); 2132 err = -ENOPROTOOPT; 2133 goto fail3; 2134 } 2135 tdev = TOEDEV(nh4.nh_ifp); 2136 2137 if (tdev == NULL) { 2138 2139 CTR2(KTR_IW_CXGBE, "%s:cc9 %p", __func__, ep); 2140 printf("%s - No toedev for interface.\n", __func__); 2141 goto fail3; 2142 } 2143 fib4_free_nh_ext(RT_DEFAULT_FIB, &nh4); 2144 2145 state_set(&ep->com, CONNECTING); 2146 ep->tos = 0; 2147 ep->com.local_addr = cm_id->local_addr; 2148 ep->com.remote_addr = cm_id->remote_addr; 2149 err = soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr, 2150 ep->com.thread); 2151 2152 if (!err) { 2153 CTR2(KTR_IW_CXGBE, "%s:cca %p", __func__, ep); 2154 goto out; 2155 } else { 2156 close_socket(&ep->com, 0); 2157 goto fail2; 2158 } 2159 2160 fail3: 2161 CTR2(KTR_IW_CXGBE, "%s:ccb %p", __func__, ep); 2162 fib4_free_nh_ext(RT_DEFAULT_FIB, &nh4); 2163 fail2: 2164 deref_cm_id(&ep->com); 2165 c4iw_put_ep(&ep->com); 2166 out: 2167 CTR2(KTR_IW_CXGBE, "%s:ccE %p", __func__, ep); 2168 return err; 2169 } 2170 2171 /* 2172 * iwcm->create_listen_ep. Returns -errno on failure. 2173 */ 2174 int 2175 c4iw_create_listen_ep(struct iw_cm_id *cm_id, int backlog) 2176 { 2177 int rc; 2178 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2179 struct c4iw_listen_ep *ep; 2180 struct socket *so = cm_id->so; 2181 2182 ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2183 CTR5(KTR_IW_CXGBE, "%s: cm_id %p, lso %p, ep %p, inp %p", __func__, 2184 cm_id, so, ep, so->so_pcb); 2185 if (ep == NULL) { 2186 log(LOG_ERR, "%s: failed to alloc memory for endpoint\n", 2187 __func__); 2188 rc = ENOMEM; 2189 goto failed; 2190 } 2191 2192 ep->com.cm_id = cm_id; 2193 ref_cm_id(&ep->com); 2194 ep->com.dev = dev; 2195 ep->backlog = backlog; 2196 ep->com.local_addr = cm_id->local_addr; 2197 ep->com.thread = curthread; 2198 state_set(&ep->com, LISTEN); 2199 ep->com.so = so; 2200 2201 cm_id->provider_data = ep; 2202 return (0); 2203 2204 failed: 2205 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, FAILED (%d)", __func__, cm_id, rc); 2206 return (-rc); 2207 } 2208 2209 void 2210 c4iw_destroy_listen_ep(struct iw_cm_id *cm_id) 2211 { 2212 struct c4iw_listen_ep *ep = to_listen_ep(cm_id); 2213 2214 CTR4(KTR_IW_CXGBE, "%s: cm_id %p, so %p, state %s", __func__, cm_id, 2215 cm_id->so, states[ep->com.state]); 2216 2217 state_set(&ep->com, DEAD); 2218 deref_cm_id(&ep->com); 2219 c4iw_put_ep(&ep->com); 2220 2221 return; 2222 } 2223 2224 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2225 { 2226 int ret = 0; 2227 int close = 0; 2228 int fatal = 0; 2229 struct c4iw_rdev *rdev; 2230 2231 mutex_lock(&ep->com.mutex); 2232 2233 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep); 2234 2235 rdev = &ep->com.dev->rdev; 2236 2237 if (c4iw_fatal_error(rdev)) { 2238 2239 CTR2(KTR_IW_CXGBE, "%s:ced1 %p", __func__, ep); 2240 fatal = 1; 2241 close_complete_upcall(ep, -ECONNRESET); 2242 ep->com.state = DEAD; 2243 } 2244 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep, 2245 states[ep->com.state]); 2246 2247 switch (ep->com.state) { 2248 2249 case MPA_REQ_WAIT: 2250 case MPA_REQ_SENT: 2251 case MPA_REQ_RCVD: 2252 case MPA_REP_SENT: 2253 case FPDU_MODE: 2254 close = 1; 2255 if (abrupt) 2256 ep->com.state = ABORTING; 2257 else { 2258 ep->com.state = CLOSING; 2259 START_EP_TIMER(ep); 2260 } 2261 set_bit(CLOSE_SENT, &ep->com.flags); 2262 break; 2263 2264 case CLOSING: 2265 2266 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2267 2268 close = 1; 2269 if (abrupt) { 2270 STOP_EP_TIMER(ep); 2271 ep->com.state = ABORTING; 2272 } else 2273 ep->com.state = MORIBUND; 2274 } 2275 break; 2276 2277 case MORIBUND: 2278 case ABORTING: 2279 case DEAD: 2280 CTR3(KTR_IW_CXGBE, 2281 "%s ignoring disconnect ep %p state %u", __func__, 2282 ep, ep->com.state); 2283 break; 2284 2285 default: 2286 BUG(); 2287 break; 2288 } 2289 2290 mutex_unlock(&ep->com.mutex); 2291 2292 if (close) { 2293 2294 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep); 2295 2296 if (abrupt) { 2297 2298 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep); 2299 set_bit(EP_DISC_ABORT, &ep->com.history); 2300 close_complete_upcall(ep, -ECONNRESET); 2301 ret = send_abort(ep); 2302 } else { 2303 2304 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep); 2305 set_bit(EP_DISC_CLOSE, &ep->com.history); 2306 2307 if (!ep->parent_ep) 2308 __state_set(&ep->com, MORIBUND); 2309 ret = shutdown_socket(&ep->com); 2310 } 2311 2312 if (ret) { 2313 2314 fatal = 1; 2315 } 2316 } 2317 2318 if (fatal) { 2319 set_bit(EP_DISC_FAIL, &ep->com.history); 2320 if (!abrupt) { 2321 STOP_EP_TIMER(ep); 2322 close_complete_upcall(ep, -EIO); 2323 } 2324 if (ep->com.qp) { 2325 struct c4iw_qp_attributes attrs; 2326 2327 attrs.next_state = C4IW_QP_STATE_ERROR; 2328 ret = c4iw_modify_qp(ep->com.dev, ep->com.qp, 2329 C4IW_QP_ATTR_NEXT_STATE, 2330 &attrs, 1); 2331 if (ret) { 2332 CTR2(KTR_IW_CXGBE, "%s:ced7 %p", __func__, ep); 2333 printf("%s - qp <- error failed!\n", __func__); 2334 } 2335 } 2336 release_ep_resources(ep); 2337 ep->com.state = DEAD; 2338 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep); 2339 } 2340 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep); 2341 return ret; 2342 } 2343 2344 #ifdef C4IW_EP_REDIRECT 2345 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, 2346 struct l2t_entry *l2t) 2347 { 2348 struct c4iw_ep *ep = ctx; 2349 2350 if (ep->dst != old) 2351 return 0; 2352 2353 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, 2354 l2t); 2355 dst_hold(new); 2356 cxgb4_l2t_release(ep->l2t); 2357 ep->l2t = l2t; 2358 dst_release(old); 2359 ep->dst = new; 2360 return 1; 2361 } 2362 #endif 2363 2364 2365 2366 static void ep_timeout(unsigned long arg) 2367 { 2368 struct c4iw_ep *ep = (struct c4iw_ep *)arg; 2369 int kickit = 0; 2370 2371 CTR2(KTR_IW_CXGBE, "%s:etB %p", __func__, ep); 2372 spin_lock(&timeout_lock); 2373 2374 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 2375 2376 /* 2377 * Only insert if it is not already on the list. 2378 */ 2379 if (!ep->entry.next) { 2380 list_add_tail(&ep->entry, &timeout_list); 2381 kickit = 1; 2382 } 2383 } 2384 spin_unlock(&timeout_lock); 2385 2386 if (kickit) { 2387 2388 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep); 2389 queue_work(c4iw_taskq, &c4iw_task); 2390 } 2391 CTR2(KTR_IW_CXGBE, "%s:etE %p", __func__, ep); 2392 } 2393 2394 static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl) 2395 { 2396 uint64_t val = be64toh(*rpl); 2397 int ret; 2398 struct c4iw_wr_wait *wr_waitp; 2399 2400 ret = (int)((val >> 8) & 0xff); 2401 wr_waitp = (struct c4iw_wr_wait *)rpl[1]; 2402 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret); 2403 if (wr_waitp) 2404 c4iw_wake_up(wr_waitp, ret ? -ret : 0); 2405 2406 return (0); 2407 } 2408 2409 static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl) 2410 { 2411 struct t4_cqe cqe =*(const struct t4_cqe *)(&rpl[0]); 2412 2413 CTR2(KTR_IW_CXGBE, "%s rpl %p", __func__, rpl); 2414 c4iw_ev_dispatch(sc->iwarp_softc, &cqe); 2415 2416 return (0); 2417 } 2418 2419 static int terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) 2420 { 2421 struct adapter *sc = iq->adapter; 2422 const struct cpl_rdma_terminate *cpl = mtod(m, const void *); 2423 unsigned int tid = GET_TID(cpl); 2424 struct c4iw_qp_attributes attrs; 2425 struct toepcb *toep = lookup_tid(sc, tid); 2426 struct socket *so; 2427 struct c4iw_ep *ep; 2428 2429 INP_WLOCK(toep->inp); 2430 so = inp_inpcbtosocket(toep->inp); 2431 ep = so->so_rcv.sb_upcallarg; 2432 INP_WUNLOCK(toep->inp); 2433 2434 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep); 2435 2436 if (ep && ep->com.qp) { 2437 2438 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid, 2439 ep->com.qp->wq.sq.qid); 2440 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2441 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 2442 1); 2443 } else 2444 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid); 2445 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep); 2446 2447 return 0; 2448 } 2449 2450 void 2451 c4iw_cm_init_cpl(struct adapter *sc) 2452 { 2453 2454 t4_register_cpl_handler(sc, CPL_RDMA_TERMINATE, terminate); 2455 t4_register_fw_msg_handler(sc, FW6_TYPE_WR_RPL, fw6_wr_rpl); 2456 t4_register_fw_msg_handler(sc, FW6_TYPE_CQE, fw6_cqe_handler); 2457 t4_register_an_handler(sc, c4iw_ev_handler); 2458 } 2459 2460 void 2461 c4iw_cm_term_cpl(struct adapter *sc) 2462 { 2463 2464 t4_register_cpl_handler(sc, CPL_RDMA_TERMINATE, NULL); 2465 t4_register_fw_msg_handler(sc, FW6_TYPE_WR_RPL, NULL); 2466 t4_register_fw_msg_handler(sc, FW6_TYPE_CQE, NULL); 2467 } 2468 2469 int __init c4iw_cm_init(void) 2470 { 2471 2472 TAILQ_INIT(&req_list); 2473 spin_lock_init(&req_lock); 2474 INIT_LIST_HEAD(&timeout_list); 2475 spin_lock_init(&timeout_lock); 2476 2477 INIT_WORK(&c4iw_task, process_req); 2478 2479 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe"); 2480 if (!c4iw_taskq) 2481 return -ENOMEM; 2482 2483 2484 return 0; 2485 } 2486 2487 void __exit c4iw_cm_term(void) 2488 { 2489 WARN_ON(!TAILQ_EMPTY(&req_list)); 2490 WARN_ON(!list_empty(&timeout_list)); 2491 flush_workqueue(c4iw_taskq); 2492 destroy_workqueue(c4iw_taskq); 2493 } 2494 #endif 2495