cm.c revision 271127
1/* 2 * Copyright (c) 2009-2013 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: stable/10/sys/dev/cxgbe/iw_cxgbe/cm.c 271127 2014-09-04 20:12:36Z hselasky $"); 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/ip_var.h> 51#include <netinet/tcp_var.h> 52#include <netinet/tcp.h> 53#include <netinet/tcpip.h> 54 55#include <netinet/toecore.h> 56 57struct sge_iq; 58struct rss_header; 59#include <linux/types.h> 60#include "offload.h" 61#include "tom/t4_tom.h" 62 63#define TOEPCB(so) ((struct toepcb *)(so_sototcpcb((so))->t_toe)) 64 65#include "iw_cxgbe.h" 66#include <linux/module.h> 67#include <linux/workqueue.h> 68#include <linux/notifier.h> 69#include <linux/inetdevice.h> 70#include <linux/if_vlan.h> 71#include <net/netevent.h> 72 73static spinlock_t req_lock; 74static TAILQ_HEAD(c4iw_ep_list, c4iw_ep_common) req_list; 75static struct work_struct c4iw_task; 76static struct workqueue_struct *c4iw_taskq; 77static LIST_HEAD(timeout_list); 78static spinlock_t timeout_lock; 79 80static void process_req(struct work_struct *ctx); 81static void start_ep_timer(struct c4iw_ep *ep); 82static void stop_ep_timer(struct c4iw_ep *ep); 83static int set_tcpinfo(struct c4iw_ep *ep); 84static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc); 85static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state tostate); 86static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state tostate); 87static void *alloc_ep(int size, gfp_t flags); 88void __free_ep(struct c4iw_ep_common *epc); 89static struct rtentry * find_route(__be32 local_ip, __be32 peer_ip, __be16 local_port, 90 __be16 peer_port, u8 tos); 91static int close_socket(struct c4iw_ep_common *epc, int close); 92static int shutdown_socket(struct c4iw_ep_common *epc); 93static void abort_socket(struct c4iw_ep *ep); 94static void send_mpa_req(struct c4iw_ep *ep); 95static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen); 96static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen); 97static void close_complete_upcall(struct c4iw_ep *ep); 98static int abort_connection(struct c4iw_ep *ep); 99static void peer_close_upcall(struct c4iw_ep *ep); 100static void peer_abort_upcall(struct c4iw_ep *ep); 101static void connect_reply_upcall(struct c4iw_ep *ep, int status); 102static void connect_request_upcall(struct c4iw_ep *ep); 103static void established_upcall(struct c4iw_ep *ep); 104static void process_mpa_reply(struct c4iw_ep *ep); 105static void process_mpa_request(struct c4iw_ep *ep); 106static void process_peer_close(struct c4iw_ep *ep); 107static void process_conn_error(struct c4iw_ep *ep); 108static void process_close_complete(struct c4iw_ep *ep); 109static void ep_timeout(unsigned long arg); 110static void init_sock(struct c4iw_ep_common *epc); 111static void process_data(struct c4iw_ep *ep); 112static void process_connected(struct c4iw_ep *ep); 113static struct socket * dequeue_socket(struct socket *head, struct sockaddr_in **remote, struct c4iw_ep *child_ep); 114static void process_newconn(struct c4iw_ep *parent_ep); 115static int c4iw_so_upcall(struct socket *so, void *arg, int waitflag); 116static void process_socket_event(struct c4iw_ep *ep); 117static 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 do { \ 128 CTR3(KTR_IW_CXGBE, "stop_ep_timer (%s:%d) ep %p", \ 129 __func__, __LINE__, (ep)); \ 130 stop_ep_timer(ep); \ 131 } while (0) 132 133#ifdef KTR 134static 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 151static void 152process_req(struct work_struct *ctx) 153{ 154 struct c4iw_ep_common *epc; 155 156 spin_lock(&req_lock); 157 while (!TAILQ_EMPTY(&req_list)) { 158 epc = TAILQ_FIRST(&req_list); 159 TAILQ_REMOVE(&req_list, epc, entry); 160 epc->entry.tqe_prev = NULL; 161 spin_unlock(&req_lock); 162 if (epc->so) 163 process_socket_event((struct c4iw_ep *)epc); 164 c4iw_put_ep(epc); 165 spin_lock(&req_lock); 166 } 167 spin_unlock(&req_lock); 168} 169 170/* 171 * XXX: doesn't belong here in the iWARP driver. 172 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is 173 * set. Is this a valid assumption for active open? 174 */ 175static int 176set_tcpinfo(struct c4iw_ep *ep) 177{ 178 struct socket *so = ep->com.so; 179 struct inpcb *inp = sotoinpcb(so); 180 struct tcpcb *tp; 181 struct toepcb *toep; 182 int rc = 0; 183 184 INP_WLOCK(inp); 185 tp = intotcpcb(inp); 186 if ((tp->t_flags & TF_TOE) == 0) { 187 rc = EINVAL; 188 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n", 189 __func__, so, ep); 190 goto done; 191 } 192 toep = TOEPCB(so); 193 194 ep->hwtid = toep->tid; 195 ep->snd_seq = tp->snd_nxt; 196 ep->rcv_seq = tp->rcv_nxt; 197 ep->emss = max(tp->t_maxseg, 128); 198done: 199 INP_WUNLOCK(inp); 200 return (rc); 201 202} 203 204static struct rtentry * 205find_route(__be32 local_ip, __be32 peer_ip, __be16 local_port, 206 __be16 peer_port, u8 tos) 207{ 208 struct route iproute; 209 struct sockaddr_in *dst = (struct sockaddr_in *)&iproute.ro_dst; 210 211 CTR5(KTR_IW_CXGBE, "%s:frtB %x, %x, %d, %d", __func__, local_ip, 212 peer_ip, ntohs(local_port), ntohs(peer_port)); 213 bzero(&iproute, sizeof iproute); 214 dst->sin_family = AF_INET; 215 dst->sin_len = sizeof *dst; 216 dst->sin_addr.s_addr = peer_ip; 217 218 rtalloc(&iproute); 219 CTR2(KTR_IW_CXGBE, "%s:frtE %p", __func__, (uint64_t)iproute.ro_rt); 220 return iproute.ro_rt; 221} 222 223static int 224close_socket(struct c4iw_ep_common *epc, int close) 225{ 226 struct socket *so = epc->so; 227 int rc; 228 229 CTR4(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s", __func__, epc, so, 230 states[epc->state]); 231 232 SOCK_LOCK(so); 233 soupcall_clear(so, SO_RCV); 234 SOCK_UNLOCK(so); 235 236 if (close) 237 rc = soclose(so); 238 else 239 rc = soshutdown(so, SHUT_WR | SHUT_RD); 240 epc->so = NULL; 241 242 return (rc); 243} 244 245static int 246shutdown_socket(struct c4iw_ep_common *epc) 247{ 248 249 CTR4(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s", __func__, epc->so, epc, 250 states[epc->state]); 251 252 return (soshutdown(epc->so, SHUT_WR)); 253} 254 255static void 256abort_socket(struct c4iw_ep *ep) 257{ 258 struct sockopt sopt; 259 int rc; 260 struct linger l; 261 262 CTR4(KTR_IW_CXGBE, "%s ep %p so %p state %s", __func__, ep, ep->com.so, 263 states[ep->com.state]); 264 265 l.l_onoff = 1; 266 l.l_linger = 0; 267 268 /* linger_time of 0 forces RST to be sent */ 269 sopt.sopt_dir = SOPT_SET; 270 sopt.sopt_level = SOL_SOCKET; 271 sopt.sopt_name = SO_LINGER; 272 sopt.sopt_val = (caddr_t)&l; 273 sopt.sopt_valsize = sizeof l; 274 sopt.sopt_td = NULL; 275 rc = sosetopt(ep->com.so, &sopt); 276 if (rc) { 277 log(LOG_ERR, "%s: can't set linger to 0, no RST! err %d\n", 278 __func__, rc); 279 } 280} 281 282static void 283process_peer_close(struct c4iw_ep *ep) 284{ 285 struct c4iw_qp_attributes attrs; 286 int disconnect = 1; 287 int release = 0; 288 289 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep, 290 ep->com.so, states[ep->com.state]); 291 292 mutex_lock(&ep->com.mutex); 293 switch (ep->com.state) { 294 295 case MPA_REQ_WAIT: 296 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT CLOSING", 297 __func__, ep); 298 __state_set(&ep->com, CLOSING); 299 break; 300 301 case MPA_REQ_SENT: 302 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT CLOSING", 303 __func__, ep); 304 __state_set(&ep->com, DEAD); 305 connect_reply_upcall(ep, -ECONNABORTED); 306 307 disconnect = 0; 308 STOP_EP_TIMER(ep); 309 close_socket(&ep->com, 0); 310 ep->com.cm_id->rem_ref(ep->com.cm_id); 311 ep->com.cm_id = NULL; 312 ep->com.qp = NULL; 313 release = 1; 314 break; 315 316 case MPA_REQ_RCVD: 317 318 /* 319 * We're gonna mark this puppy DEAD, but keep 320 * the reference on it until the ULP accepts or 321 * rejects the CR. 322 */ 323 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING", 324 __func__, ep); 325 __state_set(&ep->com, CLOSING); 326 c4iw_get_ep(&ep->com); 327 break; 328 329 case MPA_REP_SENT: 330 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING", 331 __func__, ep); 332 __state_set(&ep->com, CLOSING); 333 break; 334 335 case FPDU_MODE: 336 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING", 337 __func__, ep); 338 START_EP_TIMER(ep); 339 __state_set(&ep->com, CLOSING); 340 attrs.next_state = C4IW_QP_STATE_CLOSING; 341 c4iw_modify_qp(ep->com.dev, ep->com.qp, 342 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 343 peer_close_upcall(ep); 344 break; 345 346 case ABORTING: 347 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)", 348 __func__, ep); 349 disconnect = 0; 350 break; 351 352 case CLOSING: 353 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND", 354 __func__, ep); 355 __state_set(&ep->com, MORIBUND); 356 disconnect = 0; 357 break; 358 359 case MORIBUND: 360 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__, 361 ep); 362 STOP_EP_TIMER(ep); 363 if (ep->com.cm_id && ep->com.qp) { 364 attrs.next_state = C4IW_QP_STATE_IDLE; 365 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 366 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 367 } 368 close_socket(&ep->com, 0); 369 close_complete_upcall(ep); 370 __state_set(&ep->com, DEAD); 371 release = 1; 372 disconnect = 0; 373 break; 374 375 case DEAD: 376 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)", 377 __func__, ep); 378 disconnect = 0; 379 break; 380 381 default: 382 panic("%s: ep %p state %d", __func__, ep, 383 ep->com.state); 384 break; 385 } 386 387 mutex_unlock(&ep->com.mutex); 388 389 if (disconnect) { 390 391 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep); 392 c4iw_ep_disconnect(ep, 0, M_NOWAIT); 393 } 394 if (release) { 395 396 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep); 397 c4iw_put_ep(&ep->com); 398 } 399 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep); 400 return; 401} 402 403static void 404process_conn_error(struct c4iw_ep *ep) 405{ 406 struct c4iw_qp_attributes attrs; 407 int ret; 408 int state; 409 410 state = state_read(&ep->com); 411 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s", 412 __func__, ep, ep->com.so, ep->com.so->so_error, 413 states[ep->com.state]); 414 415 switch (state) { 416 417 case MPA_REQ_WAIT: 418 STOP_EP_TIMER(ep); 419 break; 420 421 case MPA_REQ_SENT: 422 STOP_EP_TIMER(ep); 423 connect_reply_upcall(ep, -ECONNRESET); 424 break; 425 426 case MPA_REP_SENT: 427 ep->com.rpl_err = ECONNRESET; 428 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep); 429 break; 430 431 case MPA_REQ_RCVD: 432 433 /* 434 * We're gonna mark this puppy DEAD, but keep 435 * the reference on it until the ULP accepts or 436 * rejects the CR. 437 */ 438 c4iw_get_ep(&ep->com); 439 break; 440 441 case MORIBUND: 442 case CLOSING: 443 STOP_EP_TIMER(ep); 444 /*FALLTHROUGH*/ 445 case FPDU_MODE: 446 447 if (ep->com.cm_id && ep->com.qp) { 448 449 attrs.next_state = C4IW_QP_STATE_ERROR; 450 ret = c4iw_modify_qp(ep->com.qp->rhp, 451 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 452 &attrs, 1); 453 if (ret) 454 log(LOG_ERR, 455 "%s - qp <- error failed!\n", 456 __func__); 457 } 458 peer_abort_upcall(ep); 459 break; 460 461 case ABORTING: 462 break; 463 464 case DEAD: 465 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!", 466 __func__, ep->com.so->so_error); 467 return; 468 469 default: 470 panic("%s: ep %p state %d", __func__, ep, state); 471 break; 472 } 473 474 if (state != ABORTING) { 475 476 CTR2(KTR_IW_CXGBE, "%s:pce1 %p", __func__, ep); 477 close_socket(&ep->com, 0); 478 state_set(&ep->com, DEAD); 479 c4iw_put_ep(&ep->com); 480 } 481 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep); 482 return; 483} 484 485static void 486process_close_complete(struct c4iw_ep *ep) 487{ 488 struct c4iw_qp_attributes attrs; 489 int release = 0; 490 491 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep, 492 ep->com.so, states[ep->com.state]); 493 494 /* The cm_id may be null if we failed to connect */ 495 mutex_lock(&ep->com.mutex); 496 497 switch (ep->com.state) { 498 499 case CLOSING: 500 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND", 501 __func__, ep); 502 __state_set(&ep->com, MORIBUND); 503 break; 504 505 case MORIBUND: 506 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__, 507 ep); 508 STOP_EP_TIMER(ep); 509 510 if ((ep->com.cm_id) && (ep->com.qp)) { 511 512 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE", 513 __func__, ep); 514 attrs.next_state = C4IW_QP_STATE_IDLE; 515 c4iw_modify_qp(ep->com.dev, 516 ep->com.qp, 517 C4IW_QP_ATTR_NEXT_STATE, 518 &attrs, 1); 519 } 520 521 if (ep->parent_ep) { 522 523 CTR2(KTR_IW_CXGBE, "%s:pcc3 %p", __func__, ep); 524 close_socket(&ep->com, 1); 525 } 526 else { 527 528 CTR2(KTR_IW_CXGBE, "%s:pcc4 %p", __func__, ep); 529 close_socket(&ep->com, 0); 530 } 531 close_complete_upcall(ep); 532 __state_set(&ep->com, DEAD); 533 release = 1; 534 break; 535 536 case ABORTING: 537 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep); 538 break; 539 540 case DEAD: 541 default: 542 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep); 543 panic("%s:pcc6 %p DEAD", __func__, ep); 544 break; 545 } 546 mutex_unlock(&ep->com.mutex); 547 548 if (release) { 549 550 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p", __func__, ep); 551 c4iw_put_ep(&ep->com); 552 } 553 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep); 554 return; 555} 556 557static void 558init_sock(struct c4iw_ep_common *epc) 559{ 560 int rc; 561 struct sockopt sopt; 562 struct socket *so = epc->so; 563 int on = 1; 564 565 SOCK_LOCK(so); 566 soupcall_set(so, SO_RCV, c4iw_so_upcall, epc); 567 so->so_state |= SS_NBIO; 568 SOCK_UNLOCK(so); 569 sopt.sopt_dir = SOPT_SET; 570 sopt.sopt_level = IPPROTO_TCP; 571 sopt.sopt_name = TCP_NODELAY; 572 sopt.sopt_val = (caddr_t)&on; 573 sopt.sopt_valsize = sizeof on; 574 sopt.sopt_td = NULL; 575 rc = sosetopt(so, &sopt); 576 if (rc) { 577 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n", 578 __func__, so, rc); 579 } 580} 581 582static void 583process_data(struct c4iw_ep *ep) 584{ 585 struct sockaddr_in *local, *remote; 586 587 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sb_cc %d", __func__, 588 ep->com.so, ep, states[ep->com.state], ep->com.so->so_rcv.sb_cc); 589 590 switch (state_read(&ep->com)) { 591 case MPA_REQ_SENT: 592 process_mpa_reply(ep); 593 break; 594 case MPA_REQ_WAIT: 595 in_getsockaddr(ep->com.so, (struct sockaddr **)&local); 596 in_getpeeraddr(ep->com.so, (struct sockaddr **)&remote); 597 ep->com.local_addr = *local; 598 ep->com.remote_addr = *remote; 599 free(local, M_SONAME); 600 free(remote, M_SONAME); 601 process_mpa_request(ep); 602 break; 603 default: 604 if (ep->com.so->so_rcv.sb_cc) 605 log(LOG_ERR, "%s: Unexpected streaming data. " 606 "ep %p, state %d, so %p, so_state 0x%x, sb_cc %u\n", 607 __func__, ep, state_read(&ep->com), ep->com.so, 608 ep->com.so->so_state, ep->com.so->so_rcv.sb_cc); 609 break; 610 } 611} 612 613static void 614process_connected(struct c4iw_ep *ep) 615{ 616 617 if ((ep->com.so->so_state & SS_ISCONNECTED) && !ep->com.so->so_error) 618 send_mpa_req(ep); 619 else { 620 connect_reply_upcall(ep, -ep->com.so->so_error); 621 close_socket(&ep->com, 0); 622 state_set(&ep->com, DEAD); 623 c4iw_put_ep(&ep->com); 624 } 625} 626 627static struct socket * 628dequeue_socket(struct socket *head, struct sockaddr_in **remote, 629 struct c4iw_ep *child_ep) 630{ 631 struct socket *so; 632 633 ACCEPT_LOCK(); 634 so = TAILQ_FIRST(&head->so_comp); 635 if (!so) { 636 ACCEPT_UNLOCK(); 637 return (NULL); 638 } 639 TAILQ_REMOVE(&head->so_comp, so, so_list); 640 head->so_qlen--; 641 SOCK_LOCK(so); 642 so->so_qstate &= ~SQ_COMP; 643 so->so_head = NULL; 644 soref(so); 645 soupcall_set(so, SO_RCV, c4iw_so_upcall, child_ep); 646 so->so_state |= SS_NBIO; 647 SOCK_UNLOCK(so); 648 ACCEPT_UNLOCK(); 649 soaccept(so, (struct sockaddr **)remote); 650 651 return (so); 652} 653 654static void 655process_newconn(struct c4iw_ep *parent_ep) 656{ 657 struct socket *child_so; 658 struct c4iw_ep *child_ep; 659 struct sockaddr_in *remote; 660 661 child_ep = alloc_ep(sizeof(*child_ep), M_NOWAIT); 662 if (!child_ep) { 663 CTR3(KTR_IW_CXGBE, "%s: parent so %p, parent ep %p, ENOMEM", 664 __func__, parent_ep->com.so, parent_ep); 665 log(LOG_ERR, "%s: failed to allocate ep entry\n", __func__); 666 return; 667 } 668 669 child_so = dequeue_socket(parent_ep->com.so, &remote, child_ep); 670 if (!child_so) { 671 CTR4(KTR_IW_CXGBE, 672 "%s: parent so %p, parent ep %p, child ep %p, dequeue err", 673 __func__, parent_ep->com.so, parent_ep, child_ep); 674 log(LOG_ERR, "%s: failed to dequeue child socket\n", __func__); 675 __free_ep(&child_ep->com); 676 return; 677 678 } 679 680 CTR5(KTR_IW_CXGBE, 681 "%s: parent so %p, parent ep %p, child so %p, child ep %p", 682 __func__, parent_ep->com.so, parent_ep, child_so, child_ep); 683 684 child_ep->com.local_addr = parent_ep->com.local_addr; 685 child_ep->com.remote_addr = *remote; 686 child_ep->com.dev = parent_ep->com.dev; 687 child_ep->com.so = child_so; 688 child_ep->com.cm_id = NULL; 689 child_ep->com.thread = parent_ep->com.thread; 690 child_ep->parent_ep = parent_ep; 691 692 free(remote, M_SONAME); 693 c4iw_get_ep(&parent_ep->com); 694 child_ep->parent_ep = parent_ep; 695 init_timer(&child_ep->timer); 696 state_set(&child_ep->com, MPA_REQ_WAIT); 697 START_EP_TIMER(child_ep); 698 699 /* maybe the request has already been queued up on the socket... */ 700 process_mpa_request(child_ep); 701} 702 703static int 704c4iw_so_upcall(struct socket *so, void *arg, int waitflag) 705{ 706 struct c4iw_ep *ep = arg; 707 708 spin_lock(&req_lock); 709 710 CTR6(KTR_IW_CXGBE, 711 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p", 712 __func__, so, so->so_state, ep, states[ep->com.state], 713 ep->com.entry.tqe_prev); 714 715 if (ep && ep->com.so && !ep->com.entry.tqe_prev) { 716 KASSERT(ep->com.so == so, ("%s: XXX review.", __func__)); 717 c4iw_get_ep(&ep->com); 718 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry); 719 queue_work(c4iw_taskq, &c4iw_task); 720 } 721 722 spin_unlock(&req_lock); 723 return (SU_OK); 724} 725 726static void 727process_socket_event(struct c4iw_ep *ep) 728{ 729 int state = state_read(&ep->com); 730 struct socket *so = ep->com.so; 731 732 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, " 733 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state, 734 so->so_error, so->so_rcv.sb_state, ep, states[state]); 735 736 if (state == CONNECTING) { 737 process_connected(ep); 738 return; 739 } 740 741 if (state == LISTEN) { 742 process_newconn(ep); 743 return; 744 } 745 746 /* connection error */ 747 if (so->so_error) { 748 process_conn_error(ep); 749 return; 750 } 751 752 /* peer close */ 753 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state < CLOSING) { 754 process_peer_close(ep); 755 return; 756 } 757 758 /* close complete */ 759 if (so->so_state & SS_ISDISCONNECTED) { 760 process_close_complete(ep); 761 return; 762 } 763 764 /* rx data */ 765 process_data(ep); 766} 767 768SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD, 0, "iw_cxgbe driver parameters"); 769 770int db_delay_usecs = 1; 771TUNABLE_INT("hw.iw_cxgbe.db_delay_usecs", &db_delay_usecs); 772SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, db_delay_usecs, CTLFLAG_RW, &db_delay_usecs, 0, 773 "Usecs to delay awaiting db fifo to drain"); 774 775static int dack_mode = 1; 776TUNABLE_INT("hw.iw_cxgbe.dack_mode", &dack_mode); 777SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RW, &dack_mode, 0, 778 "Delayed ack mode (default = 1)"); 779 780int c4iw_max_read_depth = 8; 781TUNABLE_INT("hw.iw_cxgbe.c4iw_max_read_depth", &c4iw_max_read_depth); 782SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RW, &c4iw_max_read_depth, 0, 783 "Per-connection max ORD/IRD (default = 8)"); 784 785static int enable_tcp_timestamps; 786TUNABLE_INT("hw.iw_cxgbe.enable_tcp_timestamps", &enable_tcp_timestamps); 787SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RW, &enable_tcp_timestamps, 0, 788 "Enable tcp timestamps (default = 0)"); 789 790static int enable_tcp_sack; 791TUNABLE_INT("hw.iw_cxgbe.enable_tcp_sack", &enable_tcp_sack); 792SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RW, &enable_tcp_sack, 0, 793 "Enable tcp SACK (default = 0)"); 794 795static int enable_tcp_window_scaling = 1; 796TUNABLE_INT("hw.iw_cxgbe.enable_tcp_window_scaling", &enable_tcp_window_scaling); 797SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RW, &enable_tcp_window_scaling, 0, 798 "Enable tcp window scaling (default = 1)"); 799 800int c4iw_debug = 1; 801TUNABLE_INT("hw.iw_cxgbe.c4iw_debug", &c4iw_debug); 802SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RW, &c4iw_debug, 0, 803 "Enable debug logging (default = 0)"); 804 805static int peer2peer; 806TUNABLE_INT("hw.iw_cxgbe.peer2peer", &peer2peer); 807SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RW, &peer2peer, 0, 808 "Support peer2peer ULPs (default = 0)"); 809 810static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 811TUNABLE_INT("hw.iw_cxgbe.p2p_type", &p2p_type); 812SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RW, &p2p_type, 0, 813 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)"); 814 815static int ep_timeout_secs = 60; 816TUNABLE_INT("hw.iw_cxgbe.ep_timeout_secs", &ep_timeout_secs); 817SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RW, &ep_timeout_secs, 0, 818 "CM Endpoint operation timeout in seconds (default = 60)"); 819 820static int mpa_rev = 1; 821TUNABLE_INT("hw.iw_cxgbe.mpa_rev", &mpa_rev); 822#ifdef IW_CM_MPAV2 823SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RW, &mpa_rev, 0, 824 "MPA Revision, 0 supports amso1100, 1 is RFC0544 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)"); 825#else 826SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RW, &mpa_rev, 0, 827 "MPA Revision, 0 supports amso1100, 1 is RFC0544 spec compliant (default = 1)"); 828#endif 829 830static int markers_enabled; 831TUNABLE_INT("hw.iw_cxgbe.markers_enabled", &markers_enabled); 832SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RW, &markers_enabled, 0, 833 "Enable MPA MARKERS (default(0) = disabled)"); 834 835static int crc_enabled = 1; 836TUNABLE_INT("hw.iw_cxgbe.crc_enabled", &crc_enabled); 837SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RW, &crc_enabled, 0, 838 "Enable MPA CRC (default(1) = enabled)"); 839 840static int rcv_win = 256 * 1024; 841TUNABLE_INT("hw.iw_cxgbe.rcv_win", &rcv_win); 842SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RW, &rcv_win, 0, 843 "TCP receive window in bytes (default = 256KB)"); 844 845static int snd_win = 128 * 1024; 846TUNABLE_INT("hw.iw_cxgbe.snd_win", &snd_win); 847SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RW, &snd_win, 0, 848 "TCP send window in bytes (default = 128KB)"); 849 850int db_fc_threshold = 2000; 851TUNABLE_INT("hw.iw_cxgbe.db_fc_threshold", &db_fc_threshold); 852SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, db_fc_threshold, CTLFLAG_RW, &db_fc_threshold, 0, 853 "QP count/threshold that triggers automatic"); 854 855static void 856start_ep_timer(struct c4iw_ep *ep) 857{ 858 859 if (timer_pending(&ep->timer)) { 860 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep); 861 printk(KERN_ERR "%s timer already started! ep %p\n", __func__, 862 ep); 863 return; 864 } 865 clear_bit(TIMEOUT, &ep->com.flags); 866 c4iw_get_ep(&ep->com); 867 ep->timer.expires = jiffies + ep_timeout_secs * HZ; 868 ep->timer.data = (unsigned long)ep; 869 ep->timer.function = ep_timeout; 870 add_timer(&ep->timer); 871} 872 873static void 874stop_ep_timer(struct c4iw_ep *ep) 875{ 876 877 del_timer_sync(&ep->timer); 878 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 879 c4iw_put_ep(&ep->com); 880 } 881} 882 883static enum 884c4iw_ep_state state_read(struct c4iw_ep_common *epc) 885{ 886 enum c4iw_ep_state state; 887 888 mutex_lock(&epc->mutex); 889 state = epc->state; 890 mutex_unlock(&epc->mutex); 891 892 return (state); 893} 894 895static void 896__state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) 897{ 898 899 epc->state = new; 900} 901 902static void 903state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) 904{ 905 906 mutex_lock(&epc->mutex); 907 __state_set(epc, new); 908 mutex_unlock(&epc->mutex); 909} 910 911static void * 912alloc_ep(int size, gfp_t gfp) 913{ 914 struct c4iw_ep_common *epc; 915 916 epc = kzalloc(size, gfp); 917 if (epc == NULL) 918 return (NULL); 919 920 kref_init(&epc->kref); 921 mutex_init(&epc->mutex); 922 c4iw_init_wr_wait(&epc->wr_wait); 923 924 return (epc); 925} 926 927void 928__free_ep(struct c4iw_ep_common *epc) 929{ 930 CTR2(KTR_IW_CXGBE, "%s:feB %p", __func__, epc); 931 KASSERT(!epc->so, ("%s warning ep->so %p \n", __func__, epc->so)); 932 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list!\n", __func__, epc)); 933 free(epc, M_DEVBUF); 934 CTR2(KTR_IW_CXGBE, "%s:feE %p", __func__, epc); 935} 936 937void _c4iw_free_ep(struct kref *kref) 938{ 939 struct c4iw_ep *ep; 940 struct c4iw_ep_common *epc; 941 942 ep = container_of(kref, struct c4iw_ep, com.kref); 943 epc = &ep->com; 944 KASSERT(!epc->so, ("%s ep->so %p", __func__, epc->so)); 945 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list", 946 __func__, epc)); 947 kfree(ep); 948} 949 950static void release_ep_resources(struct c4iw_ep *ep) 951{ 952 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep); 953 set_bit(RELEASE_RESOURCES, &ep->com.flags); 954 c4iw_put_ep(&ep->com); 955 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep); 956} 957 958static void 959send_mpa_req(struct c4iw_ep *ep) 960{ 961 int mpalen; 962 struct mpa_message *mpa; 963 struct mpa_v2_conn_params mpa_v2_params; 964 struct mbuf *m; 965 char mpa_rev_to_use = mpa_rev; 966 int err; 967 968 if (ep->retry_with_mpa_v1) 969 mpa_rev_to_use = 1; 970 mpalen = sizeof(*mpa) + ep->plen; 971 if (mpa_rev_to_use == 2) 972 mpalen += sizeof(struct mpa_v2_conn_params); 973 974 if (mpalen > MHLEN) 975 CXGBE_UNIMPLEMENTED(__func__); 976 977 m = m_gethdr(M_NOWAIT, MT_DATA); 978 if (m == NULL) { 979 connect_reply_upcall(ep, -ENOMEM); 980 return; 981 } 982 983 mpa = mtod(m, struct mpa_message *); 984 m->m_len = mpalen; 985 m->m_pkthdr.len = mpalen; 986 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 987 mpa->flags = (crc_enabled ? MPA_CRC : 0) | 988 (markers_enabled ? MPA_MARKERS : 0) | 989 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); 990 mpa->private_data_size = htons(ep->plen); 991 mpa->revision = mpa_rev_to_use; 992 993 if (mpa_rev_to_use == 1) { 994 ep->tried_with_mpa_v1 = 1; 995 ep->retry_with_mpa_v1 = 0; 996 } 997 998 if (mpa_rev_to_use == 2) { 999 mpa->private_data_size += 1000 htons(sizeof(struct mpa_v2_conn_params)); 1001 mpa_v2_params.ird = htons((u16)ep->ird); 1002 mpa_v2_params.ord = htons((u16)ep->ord); 1003 1004 if (peer2peer) { 1005 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1006 1007 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1008 mpa_v2_params.ord |= 1009 htons(MPA_V2_RDMA_WRITE_RTR); 1010 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1011 mpa_v2_params.ord |= 1012 htons(MPA_V2_RDMA_READ_RTR); 1013 } 1014 } 1015 memcpy(mpa->private_data, &mpa_v2_params, 1016 sizeof(struct mpa_v2_conn_params)); 1017 1018 if (ep->plen) { 1019 1020 memcpy(mpa->private_data + 1021 sizeof(struct mpa_v2_conn_params), 1022 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1023 } 1024 } else { 1025 1026 if (ep->plen) 1027 memcpy(mpa->private_data, 1028 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1029 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep); 1030 } 1031 1032 err = sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread); 1033 if (err) { 1034 connect_reply_upcall(ep, -ENOMEM); 1035 return; 1036 } 1037 1038 START_EP_TIMER(ep); 1039 state_set(&ep->com, MPA_REQ_SENT); 1040 ep->mpa_attr.initiator = 1; 1041} 1042 1043static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 1044{ 1045 int mpalen ; 1046 struct mpa_message *mpa; 1047 struct mpa_v2_conn_params mpa_v2_params; 1048 struct mbuf *m; 1049 int err; 1050 1051 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid, 1052 ep->plen); 1053 1054 mpalen = sizeof(*mpa) + plen; 1055 1056 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1057 1058 mpalen += sizeof(struct mpa_v2_conn_params); 1059 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep, 1060 ep->mpa_attr.version, mpalen); 1061 } 1062 1063 if (mpalen > MHLEN) 1064 CXGBE_UNIMPLEMENTED(__func__); 1065 1066 m = m_gethdr(M_NOWAIT, MT_DATA); 1067 if (m == NULL) { 1068 1069 printf("%s - cannot alloc mbuf!\n", __func__); 1070 CTR2(KTR_IW_CXGBE, "%s:smrej2 %p", __func__, ep); 1071 return (-ENOMEM); 1072 } 1073 1074 1075 mpa = mtod(m, struct mpa_message *); 1076 m->m_len = mpalen; 1077 m->m_pkthdr.len = mpalen; 1078 memset(mpa, 0, sizeof(*mpa)); 1079 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1080 mpa->flags = MPA_REJECT; 1081 mpa->revision = mpa_rev; 1082 mpa->private_data_size = htons(plen); 1083 1084 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1085 1086 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1087 mpa->private_data_size += 1088 htons(sizeof(struct mpa_v2_conn_params)); 1089 mpa_v2_params.ird = htons(((u16)ep->ird) | 1090 (peer2peer ? MPA_V2_PEER2PEER_MODEL : 1091 0)); 1092 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 1093 (p2p_type == 1094 FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 1095 MPA_V2_RDMA_WRITE_RTR : p2p_type == 1096 FW_RI_INIT_P2PTYPE_READ_REQ ? 1097 MPA_V2_RDMA_READ_RTR : 0) : 0)); 1098 memcpy(mpa->private_data, &mpa_v2_params, 1099 sizeof(struct mpa_v2_conn_params)); 1100 1101 if (ep->plen) 1102 memcpy(mpa->private_data + 1103 sizeof(struct mpa_v2_conn_params), pdata, plen); 1104 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep, 1105 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen); 1106 } else 1107 if (plen) 1108 memcpy(mpa->private_data, pdata, plen); 1109 1110 err = sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread); 1111 if (!err) 1112 ep->snd_seq += mpalen; 1113 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err); 1114 return err; 1115} 1116 1117static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 1118{ 1119 int mpalen; 1120 struct mpa_message *mpa; 1121 struct mbuf *m; 1122 struct mpa_v2_conn_params mpa_v2_params; 1123 int err; 1124 1125 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep); 1126 1127 mpalen = sizeof(*mpa) + plen; 1128 1129 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1130 1131 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep, 1132 ep->mpa_attr.version); 1133 mpalen += sizeof(struct mpa_v2_conn_params); 1134 } 1135 1136 if (mpalen > MHLEN) 1137 CXGBE_UNIMPLEMENTED(__func__); 1138 1139 m = m_gethdr(M_NOWAIT, MT_DATA); 1140 if (m == NULL) { 1141 1142 CTR2(KTR_IW_CXGBE, "%s:smrep2 %p", __func__, ep); 1143 printf("%s - cannot alloc mbuf!\n", __func__); 1144 return (-ENOMEM); 1145 } 1146 1147 1148 mpa = mtod(m, struct mpa_message *); 1149 m->m_len = mpalen; 1150 m->m_pkthdr.len = mpalen; 1151 memset(mpa, 0, sizeof(*mpa)); 1152 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1153 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 1154 (markers_enabled ? MPA_MARKERS : 0); 1155 mpa->revision = ep->mpa_attr.version; 1156 mpa->private_data_size = htons(plen); 1157 1158 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1159 1160 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1161 mpa->private_data_size += 1162 htons(sizeof(struct mpa_v2_conn_params)); 1163 mpa_v2_params.ird = htons((u16)ep->ird); 1164 mpa_v2_params.ord = htons((u16)ep->ord); 1165 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep, 1166 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord); 1167 1168 if (peer2peer && (ep->mpa_attr.p2p_type != 1169 FW_RI_INIT_P2PTYPE_DISABLED)) { 1170 1171 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1172 1173 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1174 1175 mpa_v2_params.ord |= 1176 htons(MPA_V2_RDMA_WRITE_RTR); 1177 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d", 1178 __func__, ep, p2p_type, mpa_v2_params.ird, 1179 mpa_v2_params.ord); 1180 } 1181 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1182 1183 mpa_v2_params.ord |= 1184 htons(MPA_V2_RDMA_READ_RTR); 1185 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d", 1186 __func__, ep, p2p_type, mpa_v2_params.ird, 1187 mpa_v2_params.ord); 1188 } 1189 } 1190 1191 memcpy(mpa->private_data, &mpa_v2_params, 1192 sizeof(struct mpa_v2_conn_params)); 1193 1194 if (ep->plen) 1195 memcpy(mpa->private_data + 1196 sizeof(struct mpa_v2_conn_params), pdata, plen); 1197 } else 1198 if (plen) 1199 memcpy(mpa->private_data, pdata, plen); 1200 1201 state_set(&ep->com, MPA_REP_SENT); 1202 ep->snd_seq += mpalen; 1203 err = sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1204 ep->com.thread); 1205 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err); 1206 return err; 1207} 1208 1209 1210 1211static void close_complete_upcall(struct c4iw_ep *ep) 1212{ 1213 struct iw_cm_event event; 1214 1215 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep); 1216 memset(&event, 0, sizeof(event)); 1217 event.event = IW_CM_EVENT_CLOSE; 1218 1219 if (ep->com.cm_id) { 1220 1221 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep); 1222 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1223 ep->com.cm_id->rem_ref(ep->com.cm_id); 1224 ep->com.cm_id = NULL; 1225 ep->com.qp = NULL; 1226 set_bit(CLOSE_UPCALL, &ep->com.history); 1227 } 1228 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep); 1229} 1230 1231static int abort_connection(struct c4iw_ep *ep) 1232{ 1233 int err; 1234 1235 CTR2(KTR_IW_CXGBE, "%s:abB %p", __func__, ep); 1236 close_complete_upcall(ep); 1237 state_set(&ep->com, ABORTING); 1238 abort_socket(ep); 1239 err = close_socket(&ep->com, 0); 1240 set_bit(ABORT_CONN, &ep->com.history); 1241 CTR2(KTR_IW_CXGBE, "%s:abE %p", __func__, ep); 1242 return err; 1243} 1244 1245static void peer_close_upcall(struct c4iw_ep *ep) 1246{ 1247 struct iw_cm_event event; 1248 1249 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep); 1250 memset(&event, 0, sizeof(event)); 1251 event.event = IW_CM_EVENT_DISCONNECT; 1252 1253 if (ep->com.cm_id) { 1254 1255 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep); 1256 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1257 set_bit(DISCONN_UPCALL, &ep->com.history); 1258 } 1259 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep); 1260} 1261 1262static void peer_abort_upcall(struct c4iw_ep *ep) 1263{ 1264 struct iw_cm_event event; 1265 1266 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep); 1267 memset(&event, 0, sizeof(event)); 1268 event.event = IW_CM_EVENT_CLOSE; 1269 event.status = -ECONNRESET; 1270 1271 if (ep->com.cm_id) { 1272 1273 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep); 1274 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1275 ep->com.cm_id->rem_ref(ep->com.cm_id); 1276 ep->com.cm_id = NULL; 1277 ep->com.qp = NULL; 1278 set_bit(ABORT_UPCALL, &ep->com.history); 1279 } 1280 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep); 1281} 1282 1283static void connect_reply_upcall(struct c4iw_ep *ep, int status) 1284{ 1285 struct iw_cm_event event; 1286 1287 CTR3(KTR_IW_CXGBE, "%s:cruB %p", __func__, ep, status); 1288 memset(&event, 0, sizeof(event)); 1289 event.event = IW_CM_EVENT_CONNECT_REPLY; 1290 event.status = (status ==-ECONNABORTED)?-ECONNRESET: status; 1291 event.local_addr = ep->com.local_addr; 1292 event.remote_addr = ep->com.remote_addr; 1293 1294 if ((status == 0) || (status == -ECONNREFUSED)) { 1295 1296 if (!ep->tried_with_mpa_v1) { 1297 1298 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep); 1299 /* this means MPA_v2 is used */ 1300 event.private_data_len = ep->plen - 1301 sizeof(struct mpa_v2_conn_params); 1302 event.private_data = ep->mpa_pkt + 1303 sizeof(struct mpa_message) + 1304 sizeof(struct mpa_v2_conn_params); 1305 } else { 1306 1307 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep); 1308 /* this means MPA_v1 is used */ 1309 event.private_data_len = ep->plen; 1310 event.private_data = ep->mpa_pkt + 1311 sizeof(struct mpa_message); 1312 } 1313 } 1314 1315 if (ep->com.cm_id) { 1316 1317 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep); 1318 set_bit(CONN_RPL_UPCALL, &ep->com.history); 1319 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1320 } 1321 1322 if(status == -ECONNABORTED) { 1323 1324 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status); 1325 return; 1326 } 1327 1328 if (status < 0) { 1329 1330 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status); 1331 ep->com.cm_id->rem_ref(ep->com.cm_id); 1332 ep->com.cm_id = NULL; 1333 ep->com.qp = NULL; 1334 } 1335 1336 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep); 1337} 1338 1339static void connect_request_upcall(struct c4iw_ep *ep) 1340{ 1341 struct iw_cm_event event; 1342 1343 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep, 1344 ep->tried_with_mpa_v1); 1345 1346 memset(&event, 0, sizeof(event)); 1347 event.event = IW_CM_EVENT_CONNECT_REQUEST; 1348 event.local_addr = ep->com.local_addr; 1349 event.remote_addr = ep->com.remote_addr; 1350 event.provider_data = ep; 1351 event.so = ep->com.so; 1352 1353 if (!ep->tried_with_mpa_v1) { 1354 /* this means MPA_v2 is used */ 1355#ifdef IW_CM_MPAV2 1356 event.ord = ep->ord; 1357 event.ird = ep->ird; 1358#endif 1359 event.private_data_len = ep->plen - 1360 sizeof(struct mpa_v2_conn_params); 1361 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 1362 sizeof(struct mpa_v2_conn_params); 1363 } else { 1364 1365 /* this means MPA_v1 is used. Send max supported */ 1366#ifdef IW_CM_MPAV2 1367 event.ord = c4iw_max_read_depth; 1368 event.ird = c4iw_max_read_depth; 1369#endif 1370 event.private_data_len = ep->plen; 1371 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 1372 } 1373 1374 c4iw_get_ep(&ep->com); 1375 ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, 1376 &event); 1377 set_bit(CONNREQ_UPCALL, &ep->com.history); 1378 c4iw_put_ep(&ep->parent_ep->com); 1379} 1380 1381static void established_upcall(struct c4iw_ep *ep) 1382{ 1383 struct iw_cm_event event; 1384 1385 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep); 1386 memset(&event, 0, sizeof(event)); 1387 event.event = IW_CM_EVENT_ESTABLISHED; 1388#ifdef IW_CM_MPAV2 1389 event.ird = ep->ird; 1390 event.ord = ep->ord; 1391#endif 1392 if (ep->com.cm_id) { 1393 1394 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep); 1395 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1396 set_bit(ESTAB_UPCALL, &ep->com.history); 1397 } 1398 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep); 1399} 1400 1401 1402 1403static void process_mpa_reply(struct c4iw_ep *ep) 1404{ 1405 struct mpa_message *mpa; 1406 struct mpa_v2_conn_params *mpa_v2_params; 1407 u16 plen; 1408 u16 resp_ird, resp_ord; 1409 u8 rtr_mismatch = 0, insuff_ird = 0; 1410 struct c4iw_qp_attributes attrs; 1411 enum c4iw_qp_attr_mask mask; 1412 int err; 1413 struct mbuf *top, *m; 1414 int flags = MSG_DONTWAIT; 1415 struct uio uio; 1416 1417 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep); 1418 1419 /* 1420 * Stop mpa timer. If it expired, then the state has 1421 * changed and we bail since ep_timeout already aborted 1422 * the connection. 1423 */ 1424 STOP_EP_TIMER(ep); 1425 if (state_read(&ep->com) != MPA_REQ_SENT) 1426 return; 1427 1428 uio.uio_resid = 1000000; 1429 uio.uio_td = ep->com.thread; 1430 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags); 1431 1432 if (err) { 1433 1434 if (err == EWOULDBLOCK) { 1435 1436 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep); 1437 START_EP_TIMER(ep); 1438 return; 1439 } 1440 err = -err; 1441 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep); 1442 goto err; 1443 } 1444 1445 if (ep->com.so->so_rcv.sb_mb) { 1446 1447 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep); 1448 printf("%s data after soreceive called! so %p sb_mb %p top %p\n", 1449 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top); 1450 } 1451 1452 m = top; 1453 1454 do { 1455 1456 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep); 1457 /* 1458 * If we get more than the supported amount of private data 1459 * then we must fail this connection. 1460 */ 1461 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) { 1462 1463 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep, 1464 ep->mpa_pkt_len + m->m_len); 1465 err = (-EINVAL); 1466 goto err; 1467 } 1468 1469 /* 1470 * copy the new data into our accumulation buffer. 1471 */ 1472 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len])); 1473 ep->mpa_pkt_len += m->m_len; 1474 if (!m->m_next) 1475 m = m->m_nextpkt; 1476 else 1477 m = m->m_next; 1478 } while (m); 1479 1480 m_freem(top); 1481 /* 1482 * if we don't even have the mpa message, then bail. 1483 */ 1484 if (ep->mpa_pkt_len < sizeof(*mpa)) 1485 return; 1486 mpa = (struct mpa_message *) ep->mpa_pkt; 1487 1488 /* Validate MPA header. */ 1489 if (mpa->revision > mpa_rev) { 1490 1491 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep, 1492 mpa->revision, mpa_rev); 1493 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, " 1494 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1495 err = -EPROTO; 1496 goto err; 1497 } 1498 1499 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1500 1501 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep); 1502 err = -EPROTO; 1503 goto err; 1504 } 1505 1506 plen = ntohs(mpa->private_data_size); 1507 1508 /* 1509 * Fail if there's too much private data. 1510 */ 1511 if (plen > MPA_MAX_PRIVATE_DATA) { 1512 1513 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep); 1514 err = -EPROTO; 1515 goto err; 1516 } 1517 1518 /* 1519 * If plen does not account for pkt size 1520 */ 1521 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1522 1523 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep); 1524 err = -EPROTO; 1525 goto err; 1526 } 1527 1528 ep->plen = (u8) plen; 1529 1530 /* 1531 * If we don't have all the pdata yet, then bail. 1532 * We'll continue process when more data arrives. 1533 */ 1534 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) { 1535 1536 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep); 1537 return; 1538 } 1539 1540 if (mpa->flags & MPA_REJECT) { 1541 1542 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep); 1543 err = -ECONNREFUSED; 1544 goto err; 1545 } 1546 1547 /* 1548 * If we get here we have accumulated the entire mpa 1549 * start reply message including private data. And 1550 * the MPA header is valid. 1551 */ 1552 state_set(&ep->com, FPDU_MODE); 1553 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 1554 ep->mpa_attr.recv_marker_enabled = markers_enabled; 1555 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 1556 ep->mpa_attr.version = mpa->revision; 1557 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1558 1559 if (mpa->revision == 2) { 1560 1561 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep); 1562 ep->mpa_attr.enhanced_rdma_conn = 1563 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 1564 1565 if (ep->mpa_attr.enhanced_rdma_conn) { 1566 1567 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep); 1568 mpa_v2_params = (struct mpa_v2_conn_params *) 1569 (ep->mpa_pkt + sizeof(*mpa)); 1570 resp_ird = ntohs(mpa_v2_params->ird) & 1571 MPA_V2_IRD_ORD_MASK; 1572 resp_ord = ntohs(mpa_v2_params->ord) & 1573 MPA_V2_IRD_ORD_MASK; 1574 1575 /* 1576 * This is a double-check. Ideally, below checks are 1577 * not required since ird/ord stuff has been taken 1578 * care of in c4iw_accept_cr 1579 */ 1580 if ((ep->ird < resp_ord) || (ep->ord > resp_ird)) { 1581 1582 CTR2(KTR_IW_CXGBE, "%s:pmre %p", __func__, ep); 1583 err = -ENOMEM; 1584 ep->ird = resp_ord; 1585 ep->ord = resp_ird; 1586 insuff_ird = 1; 1587 } 1588 1589 if (ntohs(mpa_v2_params->ird) & 1590 MPA_V2_PEER2PEER_MODEL) { 1591 1592 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep); 1593 if (ntohs(mpa_v2_params->ord) & 1594 MPA_V2_RDMA_WRITE_RTR) { 1595 1596 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep); 1597 ep->mpa_attr.p2p_type = 1598 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 1599 } 1600 else if (ntohs(mpa_v2_params->ord) & 1601 MPA_V2_RDMA_READ_RTR) { 1602 1603 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep); 1604 ep->mpa_attr.p2p_type = 1605 FW_RI_INIT_P2PTYPE_READ_REQ; 1606 } 1607 } 1608 } 1609 } else { 1610 1611 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep); 1612 1613 if (mpa->revision == 1) { 1614 1615 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep); 1616 1617 if (peer2peer) { 1618 1619 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep); 1620 ep->mpa_attr.p2p_type = p2p_type; 1621 } 1622 } 1623 } 1624 1625 if (set_tcpinfo(ep)) { 1626 1627 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep); 1628 printf("%s set_tcpinfo error\n", __func__); 1629 goto err; 1630 } 1631 1632 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, " 1633 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__, 1634 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 1635 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 1636 ep->mpa_attr.p2p_type); 1637 1638 /* 1639 * If responder's RTR does not match with that of initiator, assign 1640 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 1641 * generated when moving QP to RTS state. 1642 * A TERM message will be sent after QP has moved to RTS state 1643 */ 1644 if ((ep->mpa_attr.version == 2) && peer2peer && 1645 (ep->mpa_attr.p2p_type != p2p_type)) { 1646 1647 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep); 1648 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1649 rtr_mismatch = 1; 1650 } 1651 1652 1653 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 1654 attrs.mpa_attr = ep->mpa_attr; 1655 attrs.max_ird = ep->ird; 1656 attrs.max_ord = ep->ord; 1657 attrs.llp_stream_handle = ep; 1658 attrs.next_state = C4IW_QP_STATE_RTS; 1659 1660 mask = C4IW_QP_ATTR_NEXT_STATE | 1661 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 1662 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 1663 1664 /* bind QP and TID with INIT_WR */ 1665 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 1666 1667 if (err) { 1668 1669 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep); 1670 goto err; 1671 } 1672 1673 /* 1674 * If responder's RTR requirement did not match with what initiator 1675 * supports, generate TERM message 1676 */ 1677 if (rtr_mismatch) { 1678 1679 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep); 1680 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 1681 attrs.layer_etype = LAYER_MPA | DDP_LLP; 1682 attrs.ecode = MPA_NOMATCH_RTR; 1683 attrs.next_state = C4IW_QP_STATE_TERMINATE; 1684 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1685 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); 1686 err = -ENOMEM; 1687 goto out; 1688 } 1689 1690 /* 1691 * Generate TERM if initiator IRD is not sufficient for responder 1692 * provided ORD. Currently, we do the same behaviour even when 1693 * responder provided IRD is also not sufficient as regards to 1694 * initiator ORD. 1695 */ 1696 if (insuff_ird) { 1697 1698 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep); 1699 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 1700 __func__); 1701 attrs.layer_etype = LAYER_MPA | DDP_LLP; 1702 attrs.ecode = MPA_INSUFF_IRD; 1703 attrs.next_state = C4IW_QP_STATE_TERMINATE; 1704 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1705 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); 1706 err = -ENOMEM; 1707 goto out; 1708 } 1709 goto out; 1710err: 1711 state_set(&ep->com, ABORTING); 1712 abort_connection(ep); 1713out: 1714 connect_reply_upcall(ep, err); 1715 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep); 1716 return; 1717} 1718 1719static void 1720process_mpa_request(struct c4iw_ep *ep) 1721{ 1722 struct mpa_message *mpa; 1723 u16 plen; 1724 int flags = MSG_DONTWAIT; 1725 int rc; 1726 struct iovec iov; 1727 struct uio uio; 1728 enum c4iw_ep_state state = state_read(&ep->com); 1729 1730 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]); 1731 1732 if (state != MPA_REQ_WAIT) 1733 return; 1734 1735 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len]; 1736 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 1737 uio.uio_iov = &iov; 1738 uio.uio_iovcnt = 1; 1739 uio.uio_offset = 0; 1740 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 1741 uio.uio_segflg = UIO_SYSSPACE; 1742 uio.uio_rw = UIO_READ; 1743 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */ 1744 1745 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags); 1746 if (rc == EAGAIN) 1747 return; 1748 else if (rc) { 1749abort: 1750 STOP_EP_TIMER(ep); 1751 abort_connection(ep); 1752 return; 1753 } 1754 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data", 1755 __func__, ep->com.so)); 1756 ep->mpa_pkt_len += uio.uio_offset; 1757 1758 /* 1759 * If we get more than the supported amount of private data then we must 1760 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another 1761 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last 1762 * byte is filled by the soreceive above. 1763 */ 1764 1765 /* Don't even have the MPA message. Wait for more data to arrive. */ 1766 if (ep->mpa_pkt_len < sizeof(*mpa)) 1767 return; 1768 mpa = (struct mpa_message *) ep->mpa_pkt; 1769 1770 /* 1771 * Validate MPA Header. 1772 */ 1773 if (mpa->revision > mpa_rev) { 1774 log(LOG_ERR, "%s: MPA version mismatch. Local = %d," 1775 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1776 goto abort; 1777 } 1778 1779 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) 1780 goto abort; 1781 1782 /* 1783 * Fail if there's too much private data. 1784 */ 1785 plen = ntohs(mpa->private_data_size); 1786 if (plen > MPA_MAX_PRIVATE_DATA) 1787 goto abort; 1788 1789 /* 1790 * If plen does not account for pkt size 1791 */ 1792 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) 1793 goto abort; 1794 1795 ep->plen = (u8) plen; 1796 1797 /* 1798 * If we don't have all the pdata yet, then bail. 1799 */ 1800 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 1801 return; 1802 1803 /* 1804 * If we get here we have accumulated the entire mpa 1805 * start reply message including private data. 1806 */ 1807 ep->mpa_attr.initiator = 0; 1808 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 1809 ep->mpa_attr.recv_marker_enabled = markers_enabled; 1810 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 1811 ep->mpa_attr.version = mpa->revision; 1812 if (mpa->revision == 1) 1813 ep->tried_with_mpa_v1 = 1; 1814 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1815 1816 if (mpa->revision == 2) { 1817 ep->mpa_attr.enhanced_rdma_conn = 1818 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 1819 if (ep->mpa_attr.enhanced_rdma_conn) { 1820 struct mpa_v2_conn_params *mpa_v2_params; 1821 u16 ird, ord; 1822 1823 mpa_v2_params = (void *)&ep->mpa_pkt[sizeof(*mpa)]; 1824 ird = ntohs(mpa_v2_params->ird); 1825 ord = ntohs(mpa_v2_params->ord); 1826 1827 ep->ird = ird & MPA_V2_IRD_ORD_MASK; 1828 ep->ord = ord & MPA_V2_IRD_ORD_MASK; 1829 if (ird & MPA_V2_PEER2PEER_MODEL && peer2peer) { 1830 if (ord & MPA_V2_RDMA_WRITE_RTR) { 1831 ep->mpa_attr.p2p_type = 1832 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 1833 } else if (ord & MPA_V2_RDMA_READ_RTR) { 1834 ep->mpa_attr.p2p_type = 1835 FW_RI_INIT_P2PTYPE_READ_REQ; 1836 } 1837 } 1838 } 1839 } else if (mpa->revision == 1 && peer2peer) 1840 ep->mpa_attr.p2p_type = p2p_type; 1841 1842 if (set_tcpinfo(ep)) 1843 goto abort; 1844 1845 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, " 1846 "xmit_marker_enabled = %d, version = %d", __func__, 1847 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 1848 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); 1849 1850 state_set(&ep->com, MPA_REQ_RCVD); 1851 STOP_EP_TIMER(ep); 1852 1853 /* drive upcall */ 1854 mutex_lock(&ep->parent_ep->com.mutex); 1855 if (ep->parent_ep->com.state != DEAD) 1856 connect_request_upcall(ep); 1857 else 1858 abort_connection(ep); 1859 mutex_unlock(&ep->parent_ep->com.mutex); 1860} 1861 1862/* 1863 * Upcall from the adapter indicating data has been transmitted. 1864 * For us its just the single MPA request or reply. We can now free 1865 * the skb holding the mpa message. 1866 */ 1867int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 1868{ 1869 int err; 1870 struct c4iw_ep *ep = to_ep(cm_id); 1871 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep); 1872 1873 if (state_read(&ep->com) == DEAD) { 1874 1875 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep); 1876 c4iw_put_ep(&ep->com); 1877 return -ECONNRESET; 1878 } 1879 set_bit(ULP_REJECT, &ep->com.history); 1880 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); 1881 1882 if (mpa_rev == 0) { 1883 1884 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep); 1885 abort_connection(ep); 1886 } 1887 else { 1888 1889 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep); 1890 err = send_mpa_reject(ep, pdata, pdata_len); 1891 err = soshutdown(ep->com.so, 3); 1892 } 1893 c4iw_put_ep(&ep->com); 1894 CTR2(KTR_IW_CXGBE, "%s:crc4 %p", __func__, ep); 1895 return 0; 1896} 1897 1898int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 1899{ 1900 int err; 1901 struct c4iw_qp_attributes attrs; 1902 enum c4iw_qp_attr_mask mask; 1903 struct c4iw_ep *ep = to_ep(cm_id); 1904 struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 1905 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 1906 1907 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep); 1908 1909 if (state_read(&ep->com) == DEAD) { 1910 1911 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep); 1912 err = -ECONNRESET; 1913 goto err; 1914 } 1915 1916 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); 1917 BUG_ON(!qp); 1918 1919 set_bit(ULP_ACCEPT, &ep->com.history); 1920 1921 if ((conn_param->ord > c4iw_max_read_depth) || 1922 (conn_param->ird > c4iw_max_read_depth)) { 1923 1924 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep); 1925 abort_connection(ep); 1926 err = -EINVAL; 1927 goto err; 1928 } 1929 1930 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1931 1932 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep); 1933 1934 if (conn_param->ord > ep->ird) { 1935 1936 CTR2(KTR_IW_CXGBE, "%s:cac4 %p", __func__, ep); 1937 ep->ird = conn_param->ird; 1938 ep->ord = conn_param->ord; 1939 send_mpa_reject(ep, conn_param->private_data, 1940 conn_param->private_data_len); 1941 abort_connection(ep); 1942 err = -ENOMEM; 1943 goto err; 1944 } 1945 1946 if (conn_param->ird > ep->ord) { 1947 1948 CTR2(KTR_IW_CXGBE, "%s:cac5 %p", __func__, ep); 1949 1950 if (!ep->ord) { 1951 1952 CTR2(KTR_IW_CXGBE, "%s:cac6 %p", __func__, ep); 1953 conn_param->ird = 1; 1954 } 1955 else { 1956 CTR2(KTR_IW_CXGBE, "%s:cac7 %p", __func__, ep); 1957 abort_connection(ep); 1958 err = -ENOMEM; 1959 goto err; 1960 } 1961 } 1962 1963 } 1964 ep->ird = conn_param->ird; 1965 ep->ord = conn_param->ord; 1966 1967 if (ep->mpa_attr.version != 2) { 1968 1969 CTR2(KTR_IW_CXGBE, "%s:cac8 %p", __func__, ep); 1970 1971 if (peer2peer && ep->ird == 0) { 1972 1973 CTR2(KTR_IW_CXGBE, "%s:cac9 %p", __func__, ep); 1974 ep->ird = 1; 1975 } 1976 } 1977 1978 1979 cm_id->add_ref(cm_id); 1980 ep->com.cm_id = cm_id; 1981 ep->com.qp = qp; 1982 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 1983 1984 /* bind QP to EP and move to RTS */ 1985 attrs.mpa_attr = ep->mpa_attr; 1986 attrs.max_ird = ep->ird; 1987 attrs.max_ord = ep->ord; 1988 attrs.llp_stream_handle = ep; 1989 attrs.next_state = C4IW_QP_STATE_RTS; 1990 1991 /* bind QP and TID with INIT_WR */ 1992 mask = C4IW_QP_ATTR_NEXT_STATE | 1993 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 1994 C4IW_QP_ATTR_MPA_ATTR | 1995 C4IW_QP_ATTR_MAX_IRD | 1996 C4IW_QP_ATTR_MAX_ORD; 1997 1998 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 1999 2000 if (err) { 2001 2002 CTR2(KTR_IW_CXGBE, "%s:caca %p", __func__, ep); 2003 goto err1; 2004 } 2005 err = send_mpa_reply(ep, conn_param->private_data, 2006 conn_param->private_data_len); 2007 2008 if (err) { 2009 2010 CTR2(KTR_IW_CXGBE, "%s:caca %p", __func__, ep); 2011 goto err1; 2012 } 2013 2014 state_set(&ep->com, FPDU_MODE); 2015 established_upcall(ep); 2016 c4iw_put_ep(&ep->com); 2017 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep); 2018 return 0; 2019err1: 2020 ep->com.cm_id = NULL; 2021 ep->com.qp = NULL; 2022 cm_id->rem_ref(cm_id); 2023err: 2024 c4iw_put_ep(&ep->com); 2025 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep); 2026 return err; 2027} 2028 2029 2030 2031int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2032{ 2033 int err = 0; 2034 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2035 struct c4iw_ep *ep = NULL; 2036 struct rtentry *rt; 2037 struct toedev *tdev; 2038 2039 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id); 2040 2041 if ((conn_param->ord > c4iw_max_read_depth) || 2042 (conn_param->ird > c4iw_max_read_depth)) { 2043 2044 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id); 2045 err = -EINVAL; 2046 goto out; 2047 } 2048 ep = alloc_ep(sizeof(*ep), M_NOWAIT); 2049 2050 if (!ep) { 2051 2052 CTR2(KTR_IW_CXGBE, "%s:cc2 %p", __func__, cm_id); 2053 printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); 2054 err = -ENOMEM; 2055 goto out; 2056 } 2057 init_timer(&ep->timer); 2058 ep->plen = conn_param->private_data_len; 2059 2060 if (ep->plen) { 2061 2062 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep); 2063 memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 2064 conn_param->private_data, ep->plen); 2065 } 2066 ep->ird = conn_param->ird; 2067 ep->ord = conn_param->ord; 2068 2069 if (peer2peer && ep->ord == 0) { 2070 2071 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep); 2072 ep->ord = 1; 2073 } 2074 2075 cm_id->add_ref(cm_id); 2076 ep->com.dev = dev; 2077 ep->com.cm_id = cm_id; 2078 ep->com.qp = get_qhp(dev, conn_param->qpn); 2079 2080 if (!ep->com.qp) { 2081 2082 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep); 2083 err = -EINVAL; 2084 goto fail2; 2085 } 2086 ep->com.thread = curthread; 2087 ep->com.so = cm_id->so; 2088 2089 init_sock(&ep->com); 2090 2091 /* find a route */ 2092 rt = find_route( 2093 cm_id->local_addr.sin_addr.s_addr, 2094 cm_id->remote_addr.sin_addr.s_addr, 2095 cm_id->local_addr.sin_port, 2096 cm_id->remote_addr.sin_port, 0); 2097 2098 if (!rt) { 2099 2100 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep); 2101 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 2102 err = -EHOSTUNREACH; 2103 goto fail3; 2104 } 2105 2106 2107 if (!(rt->rt_ifp->if_flags & IFCAP_TOE)) { 2108 2109 CTR2(KTR_IW_CXGBE, "%s:cc8 %p", __func__, ep); 2110 printf("%s - interface not TOE capable.\n", __func__); 2111 goto fail3; 2112 } 2113 tdev = TOEDEV(rt->rt_ifp); 2114 2115 if (tdev == NULL) { 2116 2117 CTR2(KTR_IW_CXGBE, "%s:cc9 %p", __func__, ep); 2118 printf("%s - No toedev for interface.\n", __func__); 2119 goto fail3; 2120 } 2121 RTFREE(rt); 2122 2123 state_set(&ep->com, CONNECTING); 2124 ep->tos = 0; 2125 ep->com.local_addr = cm_id->local_addr; 2126 ep->com.remote_addr = cm_id->remote_addr; 2127 err = soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr, 2128 ep->com.thread); 2129 2130 if (!err) { 2131 2132 CTR2(KTR_IW_CXGBE, "%s:cca %p", __func__, ep); 2133 goto out; 2134 } 2135 2136fail3: 2137 CTR2(KTR_IW_CXGBE, "%s:ccb %p", __func__, ep); 2138 RTFREE(rt); 2139fail2: 2140 cm_id->rem_ref(cm_id); 2141 c4iw_put_ep(&ep->com); 2142out: 2143 CTR2(KTR_IW_CXGBE, "%s:ccE %p", __func__, ep); 2144 return err; 2145} 2146 2147/* 2148 * iwcm->create_listen. Returns -errno on failure. 2149 */ 2150int 2151c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 2152{ 2153 int rc; 2154 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2155 struct c4iw_listen_ep *ep; 2156 struct socket *so = cm_id->so; 2157 2158 ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2159 CTR5(KTR_IW_CXGBE, "%s: cm_id %p, lso %p, ep %p, inp %p", __func__, 2160 cm_id, so, ep, so->so_pcb); 2161 if (ep == NULL) { 2162 log(LOG_ERR, "%s: failed to alloc memory for endpoint\n", 2163 __func__); 2164 rc = ENOMEM; 2165 goto failed; 2166 } 2167 2168 cm_id->add_ref(cm_id); 2169 ep->com.cm_id = cm_id; 2170 ep->com.dev = dev; 2171 ep->backlog = backlog; 2172 ep->com.local_addr = cm_id->local_addr; 2173 ep->com.thread = curthread; 2174 state_set(&ep->com, LISTEN); 2175 ep->com.so = so; 2176 init_sock(&ep->com); 2177 2178 rc = solisten(so, ep->backlog, ep->com.thread); 2179 if (rc != 0) { 2180 log(LOG_ERR, "%s: failed to start listener: %d\n", __func__, 2181 rc); 2182 close_socket(&ep->com, 0); 2183 cm_id->rem_ref(cm_id); 2184 c4iw_put_ep(&ep->com); 2185 goto failed; 2186 } 2187 2188 cm_id->provider_data = ep; 2189 return (0); 2190 2191failed: 2192 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, FAILED (%d)", __func__, cm_id, rc); 2193 return (-rc); 2194} 2195 2196int 2197c4iw_destroy_listen(struct iw_cm_id *cm_id) 2198{ 2199 int rc; 2200 struct c4iw_listen_ep *ep = to_listen_ep(cm_id); 2201 2202 CTR4(KTR_IW_CXGBE, "%s: cm_id %p, so %p, inp %p", __func__, cm_id, 2203 cm_id->so, cm_id->so->so_pcb); 2204 2205 state_set(&ep->com, DEAD); 2206 rc = close_socket(&ep->com, 0); 2207 cm_id->rem_ref(cm_id); 2208 c4iw_put_ep(&ep->com); 2209 2210 return (rc); 2211} 2212 2213int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2214{ 2215 int ret = 0; 2216 int close = 0; 2217 int fatal = 0; 2218 struct c4iw_rdev *rdev; 2219 2220 mutex_lock(&ep->com.mutex); 2221 2222 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep); 2223 2224 rdev = &ep->com.dev->rdev; 2225 2226 if (c4iw_fatal_error(rdev)) { 2227 2228 CTR2(KTR_IW_CXGBE, "%s:ced1 %p", __func__, ep); 2229 fatal = 1; 2230 close_complete_upcall(ep); 2231 ep->com.state = DEAD; 2232 } 2233 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep, 2234 states[ep->com.state]); 2235 2236 switch (ep->com.state) { 2237 2238 case MPA_REQ_WAIT: 2239 case MPA_REQ_SENT: 2240 case MPA_REQ_RCVD: 2241 case MPA_REP_SENT: 2242 case FPDU_MODE: 2243 close = 1; 2244 if (abrupt) 2245 ep->com.state = ABORTING; 2246 else { 2247 ep->com.state = CLOSING; 2248 START_EP_TIMER(ep); 2249 } 2250 set_bit(CLOSE_SENT, &ep->com.flags); 2251 break; 2252 2253 case CLOSING: 2254 2255 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2256 2257 close = 1; 2258 if (abrupt) { 2259 STOP_EP_TIMER(ep); 2260 ep->com.state = ABORTING; 2261 } else 2262 ep->com.state = MORIBUND; 2263 } 2264 break; 2265 2266 case MORIBUND: 2267 case ABORTING: 2268 case DEAD: 2269 CTR3(KTR_IW_CXGBE, 2270 "%s ignoring disconnect ep %p state %u", __func__, 2271 ep, ep->com.state); 2272 break; 2273 2274 default: 2275 BUG(); 2276 break; 2277 } 2278 2279 mutex_unlock(&ep->com.mutex); 2280 2281 if (close) { 2282 2283 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep); 2284 2285 if (abrupt) { 2286 2287 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep); 2288 set_bit(EP_DISC_ABORT, &ep->com.history); 2289 ret = abort_connection(ep); 2290 } else { 2291 2292 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep); 2293 set_bit(EP_DISC_CLOSE, &ep->com.history); 2294 2295 if (!ep->parent_ep) 2296 __state_set(&ep->com, MORIBUND); 2297 ret = shutdown_socket(&ep->com); 2298 } 2299 2300 if (ret) { 2301 2302 fatal = 1; 2303 } 2304 } 2305 2306 if (fatal) { 2307 2308 release_ep_resources(ep); 2309 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep); 2310 } 2311 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep); 2312 return ret; 2313} 2314 2315#ifdef C4IW_EP_REDIRECT 2316int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, 2317 struct l2t_entry *l2t) 2318{ 2319 struct c4iw_ep *ep = ctx; 2320 2321 if (ep->dst != old) 2322 return 0; 2323 2324 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, 2325 l2t); 2326 dst_hold(new); 2327 cxgb4_l2t_release(ep->l2t); 2328 ep->l2t = l2t; 2329 dst_release(old); 2330 ep->dst = new; 2331 return 1; 2332} 2333#endif 2334 2335 2336 2337static void ep_timeout(unsigned long arg) 2338{ 2339 struct c4iw_ep *ep = (struct c4iw_ep *)arg; 2340 int kickit = 0; 2341 2342 CTR2(KTR_IW_CXGBE, "%s:etB %p", __func__, ep); 2343 spin_lock(&timeout_lock); 2344 2345 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 2346 2347 list_add_tail(&ep->entry, &timeout_list); 2348 kickit = 1; 2349 } 2350 spin_unlock(&timeout_lock); 2351 2352 if (kickit) { 2353 2354 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep); 2355 queue_work(c4iw_taskq, &c4iw_task); 2356 } 2357 CTR2(KTR_IW_CXGBE, "%s:etE %p", __func__, ep); 2358} 2359 2360static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl) 2361{ 2362 uint64_t val = be64toh(*rpl); 2363 int ret; 2364 struct c4iw_wr_wait *wr_waitp; 2365 2366 ret = (int)((val >> 8) & 0xff); 2367 wr_waitp = (struct c4iw_wr_wait *)rpl[1]; 2368 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret); 2369 if (wr_waitp) 2370 c4iw_wake_up(wr_waitp, ret ? -ret : 0); 2371 2372 return (0); 2373} 2374 2375static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl) 2376{ 2377 struct t4_cqe cqe =*(const struct t4_cqe *)(&rpl[0]); 2378 2379 CTR2(KTR_IW_CXGBE, "%s rpl %p", __func__, rpl); 2380 c4iw_ev_dispatch(sc->iwarp_softc, &cqe); 2381 2382 return (0); 2383} 2384 2385static int terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) 2386{ 2387 2388 struct adapter *sc = iq->adapter; 2389 2390 const struct cpl_rdma_terminate *rpl = (const void *)(rss + 1); 2391 unsigned int tid = GET_TID(rpl); 2392 struct c4iw_qp_attributes attrs; 2393 struct toepcb *toep = lookup_tid(sc, tid); 2394 struct socket *so = inp_inpcbtosocket(toep->inp); 2395 struct c4iw_ep *ep = so->so_rcv.sb_upcallarg; 2396 2397 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep); 2398 2399 if (ep && ep->com.qp) { 2400 2401 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid, 2402 ep->com.qp->wq.sq.qid); 2403 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2404 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 2405 1); 2406 } else 2407 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid); 2408 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep); 2409 2410 return 0; 2411} 2412 2413 void 2414c4iw_cm_init_cpl(struct adapter *sc) 2415{ 2416 2417 t4_register_cpl_handler(sc, CPL_RDMA_TERMINATE, terminate); 2418 t4_register_fw_msg_handler(sc, FW6_TYPE_WR_RPL, fw6_wr_rpl); 2419 t4_register_fw_msg_handler(sc, FW6_TYPE_CQE, fw6_cqe_handler); 2420 t4_register_an_handler(sc, c4iw_ev_handler); 2421} 2422 2423 void 2424c4iw_cm_term_cpl(struct adapter *sc) 2425{ 2426 2427 t4_register_cpl_handler(sc, CPL_RDMA_TERMINATE, NULL); 2428 t4_register_fw_msg_handler(sc, FW6_TYPE_WR_RPL, NULL); 2429 t4_register_fw_msg_handler(sc, FW6_TYPE_CQE, NULL); 2430} 2431 2432int __init c4iw_cm_init(void) 2433{ 2434 2435 TAILQ_INIT(&req_list); 2436 spin_lock_init(&req_lock); 2437 INIT_LIST_HEAD(&timeout_list); 2438 spin_lock_init(&timeout_lock); 2439 2440 INIT_WORK(&c4iw_task, process_req); 2441 2442 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe"); 2443 if (!c4iw_taskq) 2444 return -ENOMEM; 2445 2446 2447 return 0; 2448} 2449 2450void __exit c4iw_cm_term(void) 2451{ 2452 WARN_ON(!TAILQ_EMPTY(&req_list)); 2453 WARN_ON(!list_empty(&timeout_list)); 2454 flush_workqueue(c4iw_taskq); 2455 destroy_workqueue(c4iw_taskq); 2456} 2457#endif 2458