1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2009-2013, 2016 Chelsio, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include "opt_inet.h" 38 39 #ifdef TCP_OFFLOAD 40 #include <sys/types.h> 41 #include <sys/malloc.h> 42 #include <sys/socket.h> 43 #include <sys/socketvar.h> 44 #include <sys/sockio.h> 45 #include <sys/taskqueue.h> 46 #include <netinet/in.h> 47 #include <net/route.h> 48 #include <net/route/nhop.h> 49 50 #include <netinet/in_systm.h> 51 #include <netinet/in_pcb.h> 52 #include <netinet6/in6_pcb.h> 53 #include <netinet/ip.h> 54 #include <netinet/in_fib.h> 55 #include <netinet6/in6_fib.h> 56 #include <netinet6/scope6_var.h> 57 #include <netinet/ip_var.h> 58 #include <netinet/tcp_var.h> 59 #include <netinet/tcp.h> 60 #include <netinet/tcpip.h> 61 62 #include <netinet/toecore.h> 63 64 struct sge_iq; 65 struct rss_header; 66 struct cpl_set_tcb_rpl; 67 #include <linux/types.h> 68 #include "offload.h" 69 #include "tom/t4_tom.h" 70 71 #define TOEPCB(so) ((struct toepcb *)(so_sototcpcb((so))->t_toe)) 72 73 #include "iw_cxgbe.h" 74 #include <linux/module.h> 75 #include <linux/workqueue.h> 76 #include <linux/if_vlan.h> 77 #include <net/netevent.h> 78 #include <rdma/rdma_cm.h> 79 80 static spinlock_t req_lock; 81 static TAILQ_HEAD(c4iw_ep_list, c4iw_ep_common) req_list; 82 static struct work_struct c4iw_task; 83 static struct workqueue_struct *c4iw_taskq; 84 static LIST_HEAD(err_cqe_list); 85 static spinlock_t err_cqe_lock; 86 static LIST_HEAD(listen_port_list); 87 static DEFINE_MUTEX(listen_port_mutex); 88 89 static void process_req(struct work_struct *ctx); 90 static void start_ep_timer(struct c4iw_ep *ep); 91 static int stop_ep_timer(struct c4iw_ep *ep); 92 static int set_tcpinfo(struct c4iw_ep *ep); 93 static void process_timeout(struct c4iw_ep *ep); 94 static void process_err_cqes(void); 95 static void *alloc_ep(int size, gfp_t flags); 96 static void close_socket(struct socket *so); 97 static int send_mpa_req(struct c4iw_ep *ep); 98 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen); 99 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen); 100 static void close_complete_upcall(struct c4iw_ep *ep, int status); 101 static int send_abort(struct c4iw_ep *ep); 102 static void peer_close_upcall(struct c4iw_ep *ep); 103 static void peer_abort_upcall(struct c4iw_ep *ep); 104 static void connect_reply_upcall(struct c4iw_ep *ep, int status); 105 static int connect_request_upcall(struct c4iw_ep *ep); 106 static void established_upcall(struct c4iw_ep *ep); 107 static int process_mpa_reply(struct c4iw_ep *ep); 108 static int process_mpa_request(struct c4iw_ep *ep); 109 static void process_peer_close(struct c4iw_ep *ep); 110 static void process_conn_error(struct c4iw_ep *ep); 111 static void process_close_complete(struct c4iw_ep *ep); 112 static void ep_timeout(unsigned long arg); 113 static void setiwsockopt(struct socket *so); 114 static void init_iwarp_socket(struct socket *so, void *arg); 115 static void uninit_iwarp_socket(struct socket *so); 116 static void process_data(struct c4iw_ep *ep); 117 static void process_connected(struct c4iw_ep *ep); 118 static int c4iw_so_upcall(struct socket *so, void *arg, int waitflag); 119 static void process_socket_event(struct c4iw_ep *ep); 120 static void release_ep_resources(struct c4iw_ep *ep); 121 static int process_terminate(struct c4iw_ep *ep); 122 static int terminate(struct sge_iq *iq, const struct rss_header *rss, 123 struct mbuf *m); 124 static int add_ep_to_req_list(struct c4iw_ep *ep, int ep_events); 125 static struct listen_port_info * 126 add_ep_to_listenlist(struct c4iw_listen_ep *lep); 127 static int rem_ep_from_listenlist(struct c4iw_listen_ep *lep); 128 static struct c4iw_listen_ep * 129 find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so); 130 static int get_ifnet_from_raddr(struct sockaddr_storage *raddr, 131 struct ifnet **ifp); 132 static void process_newconn(struct c4iw_listen_ep *master_lep, 133 struct socket *new_so); 134 #define START_EP_TIMER(ep) \ 135 do { \ 136 CTR3(KTR_IW_CXGBE, "start_ep_timer (%s:%d) ep %p", \ 137 __func__, __LINE__, (ep)); \ 138 start_ep_timer(ep); \ 139 } while (0) 140 141 #define STOP_EP_TIMER(ep) \ 142 ({ \ 143 CTR3(KTR_IW_CXGBE, "stop_ep_timer (%s:%d) ep %p", \ 144 __func__, __LINE__, (ep)); \ 145 stop_ep_timer(ep); \ 146 }) 147 148 #define GET_LOCAL_ADDR(pladdr, so) \ 149 do { \ 150 struct sockaddr_storage *__a = NULL; \ 151 struct inpcb *__inp = sotoinpcb(so); \ 152 KASSERT(__inp != NULL, \ 153 ("GET_LOCAL_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 154 if (__inp->inp_vflag & INP_IPV4) \ 155 in_getsockaddr(so, (struct sockaddr **)&__a); \ 156 else \ 157 in6_getsockaddr(so, (struct sockaddr **)&__a); \ 158 *(pladdr) = *__a; \ 159 free(__a, M_SONAME); \ 160 } while (0) 161 162 #define GET_REMOTE_ADDR(praddr, so) \ 163 do { \ 164 struct sockaddr_storage *__a = NULL; \ 165 struct inpcb *__inp = sotoinpcb(so); \ 166 KASSERT(__inp != NULL, \ 167 ("GET_REMOTE_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 168 if (__inp->inp_vflag & INP_IPV4) \ 169 in_getpeeraddr(so, (struct sockaddr **)&__a); \ 170 else \ 171 in6_getpeeraddr(so, (struct sockaddr **)&__a); \ 172 *(praddr) = *__a; \ 173 free(__a, M_SONAME); \ 174 } while (0) 175 176 static char *states[] = { 177 "idle", 178 "listen", 179 "connecting", 180 "mpa_wait_req", 181 "mpa_req_sent", 182 "mpa_req_rcvd", 183 "mpa_rep_sent", 184 "fpdu_mode", 185 "aborting", 186 "closing", 187 "moribund", 188 "dead", 189 NULL, 190 }; 191 192 static void deref_cm_id(struct c4iw_ep_common *epc) 193 { 194 epc->cm_id->rem_ref(epc->cm_id); 195 epc->cm_id = NULL; 196 set_bit(CM_ID_DEREFED, &epc->history); 197 } 198 199 static void ref_cm_id(struct c4iw_ep_common *epc) 200 { 201 set_bit(CM_ID_REFED, &epc->history); 202 epc->cm_id->add_ref(epc->cm_id); 203 } 204 205 static void deref_qp(struct c4iw_ep *ep) 206 { 207 c4iw_qp_rem_ref(&ep->com.qp->ibqp); 208 clear_bit(QP_REFERENCED, &ep->com.flags); 209 set_bit(QP_DEREFED, &ep->com.history); 210 } 211 212 static void ref_qp(struct c4iw_ep *ep) 213 { 214 set_bit(QP_REFERENCED, &ep->com.flags); 215 set_bit(QP_REFED, &ep->com.history); 216 c4iw_qp_add_ref(&ep->com.qp->ibqp); 217 } 218 /* allocated per TCP port while listening */ 219 struct listen_port_info { 220 uint16_t port_num; /* TCP port address */ 221 struct list_head list; /* belongs to listen_port_list */ 222 struct list_head lep_list; /* per port lep list */ 223 uint32_t refcnt; /* number of lep's listening */ 224 }; 225 226 /* 227 * Following two lists are used to manage INADDR_ANY listeners: 228 * 1)listen_port_list 229 * 2)lep_list 230 * 231 * Below is the INADDR_ANY listener lists overview on a system with a two port 232 * adapter: 233 * |------------------| 234 * |listen_port_list | 235 * |------------------| 236 * | 237 * | |-----------| |-----------| 238 * | | port_num:X| | port_num:X| 239 * |--------------|-list------|-------|-list------|-------.... 240 * | lep_list----| | lep_list----| 241 * | refcnt | | | refcnt | | 242 * | | | | | | 243 * | | | | | | 244 * |-----------| | |-----------| | 245 * | | 246 * | | 247 * | | 248 * | | lep1 lep2 249 * | | |----------------| |----------------| 250 * | |----| listen_ep_list |----| listen_ep_list | 251 * | |----------------| |----------------| 252 * | 253 * | 254 * | lep1 lep2 255 * | |----------------| |----------------| 256 * |---| listen_ep_list |----| listen_ep_list | 257 * |----------------| |----------------| 258 * 259 * Because of two port adapter, the number of lep's are two(lep1 & lep2) for 260 * each TCP port number. 261 * 262 * Here 'lep1' is always marked as Master lep, because solisten() is always 263 * called through first lep. 264 * 265 */ 266 static struct listen_port_info * 267 add_ep_to_listenlist(struct c4iw_listen_ep *lep) 268 { 269 uint16_t port; 270 struct listen_port_info *port_info = NULL; 271 struct sockaddr_storage *laddr = &lep->com.local_addr; 272 273 port = (laddr->ss_family == AF_INET) ? 274 ((struct sockaddr_in *)laddr)->sin_port : 275 ((struct sockaddr_in6 *)laddr)->sin6_port; 276 277 mutex_lock(&listen_port_mutex); 278 279 list_for_each_entry(port_info, &listen_port_list, list) 280 if (port_info->port_num == port) 281 goto found_port; 282 283 port_info = malloc(sizeof(*port_info), M_CXGBE, M_WAITOK); 284 port_info->port_num = port; 285 port_info->refcnt = 0; 286 287 list_add_tail(&port_info->list, &listen_port_list); 288 INIT_LIST_HEAD(&port_info->lep_list); 289 290 found_port: 291 port_info->refcnt++; 292 list_add_tail(&lep->listen_ep_list, &port_info->lep_list); 293 mutex_unlock(&listen_port_mutex); 294 return port_info; 295 } 296 297 static int 298 rem_ep_from_listenlist(struct c4iw_listen_ep *lep) 299 { 300 uint16_t port; 301 struct listen_port_info *port_info = NULL; 302 struct sockaddr_storage *laddr = &lep->com.local_addr; 303 int refcnt = 0; 304 305 port = (laddr->ss_family == AF_INET) ? 306 ((struct sockaddr_in *)laddr)->sin_port : 307 ((struct sockaddr_in6 *)laddr)->sin6_port; 308 309 mutex_lock(&listen_port_mutex); 310 311 /* get the port_info structure based on the lep's port address */ 312 list_for_each_entry(port_info, &listen_port_list, list) { 313 if (port_info->port_num == port) { 314 port_info->refcnt--; 315 refcnt = port_info->refcnt; 316 /* remove the current lep from the listen list */ 317 list_del(&lep->listen_ep_list); 318 if (port_info->refcnt == 0) { 319 /* Remove this entry from the list as there 320 * are no more listeners for this port_num. 321 */ 322 list_del(&port_info->list); 323 kfree(port_info); 324 } 325 break; 326 } 327 } 328 mutex_unlock(&listen_port_mutex); 329 return refcnt; 330 } 331 332 /* 333 * Find the lep that belongs to the ifnet on which the SYN frame was received. 334 */ 335 struct c4iw_listen_ep * 336 find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so) 337 { 338 struct adapter *adap = NULL; 339 struct c4iw_listen_ep *lep = NULL; 340 struct ifnet *ifp = NULL, *hw_ifp = NULL; 341 struct listen_port_info *port_info = NULL; 342 int i = 0, found_portinfo = 0, found_lep = 0; 343 uint16_t port; 344 345 /* 346 * STEP 1: Figure out 'ifp' of the physical interface, not pseudo 347 * interfaces like vlan, lagg, etc.. 348 * TBD: lagg support, lagg + vlan support. 349 */ 350 ifp = TOEPCB(so)->l2te->ifp; 351 if (ifp->if_type == IFT_L2VLAN) { 352 hw_ifp = VLAN_TRUNKDEV(ifp); 353 if (hw_ifp == NULL) { 354 CTR4(KTR_IW_CXGBE, "%s: Failed to get parent ifnet of " 355 "vlan ifnet %p, sock %p, master_lep %p", 356 __func__, ifp, so, master_lep); 357 return (NULL); 358 } 359 } else 360 hw_ifp = ifp; 361 362 /* STEP 2: Find 'port_info' with listener local port address. */ 363 port = (master_lep->com.local_addr.ss_family == AF_INET) ? 364 ((struct sockaddr_in *)&master_lep->com.local_addr)->sin_port : 365 ((struct sockaddr_in6 *)&master_lep->com.local_addr)->sin6_port; 366 367 368 mutex_lock(&listen_port_mutex); 369 list_for_each_entry(port_info, &listen_port_list, list) 370 if (port_info->port_num == port) { 371 found_portinfo =1; 372 break; 373 } 374 if (!found_portinfo) 375 goto out; 376 377 /* STEP 3: Traverse through list of lep's that are bound to the current 378 * TCP port address and find the lep that belongs to the ifnet on which 379 * the SYN frame was received. 380 */ 381 list_for_each_entry(lep, &port_info->lep_list, listen_ep_list) { 382 adap = lep->com.dev->rdev.adap; 383 for_each_port(adap, i) { 384 if (hw_ifp == adap->port[i]->vi[0].ifp) { 385 found_lep =1; 386 goto out; 387 } 388 } 389 } 390 out: 391 mutex_unlock(&listen_port_mutex); 392 return found_lep ? lep : (NULL); 393 } 394 395 static void process_timeout(struct c4iw_ep *ep) 396 { 397 struct c4iw_qp_attributes attrs = {0}; 398 int abort = 1; 399 400 CTR4(KTR_IW_CXGBE, "%s ep :%p, tid:%u, state %d", __func__, 401 ep, ep->hwtid, ep->com.state); 402 set_bit(TIMEDOUT, &ep->com.history); 403 switch (ep->com.state) { 404 case MPA_REQ_SENT: 405 connect_reply_upcall(ep, -ETIMEDOUT); 406 break; 407 case MPA_REQ_WAIT: 408 case MPA_REQ_RCVD: 409 case MPA_REP_SENT: 410 case FPDU_MODE: 411 break; 412 case CLOSING: 413 case MORIBUND: 414 if (ep->com.cm_id && ep->com.qp) { 415 attrs.next_state = C4IW_QP_STATE_ERROR; 416 c4iw_modify_qp(ep->com.dev, ep->com.qp, 417 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 418 } 419 close_complete_upcall(ep, -ETIMEDOUT); 420 break; 421 case ABORTING: 422 case DEAD: 423 /* 424 * These states are expected if the ep timed out at the same 425 * time as another thread was calling stop_ep_timer(). 426 * So we silently do nothing for these states. 427 */ 428 abort = 0; 429 break; 430 default: 431 CTR4(KTR_IW_CXGBE, "%s unexpected state ep %p tid %u state %u" 432 , __func__, ep, ep->hwtid, ep->com.state); 433 abort = 0; 434 } 435 if (abort) 436 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 437 c4iw_put_ep(&ep->com); 438 return; 439 } 440 441 struct cqe_list_entry { 442 struct list_head entry; 443 struct c4iw_dev *rhp; 444 struct t4_cqe err_cqe; 445 }; 446 447 static void 448 process_err_cqes(void) 449 { 450 unsigned long flag; 451 struct cqe_list_entry *cle; 452 453 spin_lock_irqsave(&err_cqe_lock, flag); 454 while (!list_empty(&err_cqe_list)) { 455 struct list_head *tmp; 456 tmp = err_cqe_list.next; 457 list_del(tmp); 458 tmp->next = tmp->prev = NULL; 459 spin_unlock_irqrestore(&err_cqe_lock, flag); 460 cle = list_entry(tmp, struct cqe_list_entry, entry); 461 c4iw_ev_dispatch(cle->rhp, &cle->err_cqe); 462 free(cle, M_CXGBE); 463 spin_lock_irqsave(&err_cqe_lock, flag); 464 } 465 spin_unlock_irqrestore(&err_cqe_lock, flag); 466 467 return; 468 } 469 470 static void 471 process_req(struct work_struct *ctx) 472 { 473 struct c4iw_ep_common *epc; 474 unsigned long flag; 475 int ep_events; 476 477 process_err_cqes(); 478 spin_lock_irqsave(&req_lock, flag); 479 while (!TAILQ_EMPTY(&req_list)) { 480 epc = TAILQ_FIRST(&req_list); 481 TAILQ_REMOVE(&req_list, epc, entry); 482 epc->entry.tqe_prev = NULL; 483 ep_events = epc->ep_events; 484 epc->ep_events = 0; 485 spin_unlock_irqrestore(&req_lock, flag); 486 mutex_lock(&epc->mutex); 487 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, ep_state %s events 0x%x", 488 __func__, epc->so, epc, states[epc->state], ep_events); 489 if (ep_events & C4IW_EVENT_TERM) 490 process_terminate((struct c4iw_ep *)epc); 491 if (ep_events & C4IW_EVENT_TIMEOUT) 492 process_timeout((struct c4iw_ep *)epc); 493 if (ep_events & C4IW_EVENT_SOCKET) 494 process_socket_event((struct c4iw_ep *)epc); 495 mutex_unlock(&epc->mutex); 496 c4iw_put_ep(epc); 497 process_err_cqes(); 498 spin_lock_irqsave(&req_lock, flag); 499 } 500 spin_unlock_irqrestore(&req_lock, flag); 501 } 502 503 /* 504 * XXX: doesn't belong here in the iWARP driver. 505 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is 506 * set. Is this a valid assumption for active open? 507 */ 508 static int 509 set_tcpinfo(struct c4iw_ep *ep) 510 { 511 struct socket *so = ep->com.so; 512 struct inpcb *inp = sotoinpcb(so); 513 struct tcpcb *tp; 514 struct toepcb *toep; 515 int rc = 0; 516 517 INP_WLOCK(inp); 518 tp = intotcpcb(inp); 519 if ((tp->t_flags & TF_TOE) == 0) { 520 rc = EINVAL; 521 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n", 522 __func__, so, ep); 523 goto done; 524 } 525 toep = TOEPCB(so); 526 527 ep->hwtid = toep->tid; 528 ep->snd_seq = tp->snd_nxt; 529 ep->rcv_seq = tp->rcv_nxt; 530 done: 531 INP_WUNLOCK(inp); 532 return (rc); 533 534 } 535 static int 536 get_ifnet_from_raddr(struct sockaddr_storage *raddr, struct ifnet **ifp) 537 { 538 int err = 0; 539 struct nhop_object *nh; 540 541 if (raddr->ss_family == AF_INET) { 542 struct sockaddr_in *raddr4 = (struct sockaddr_in *)raddr; 543 544 nh = fib4_lookup(RT_DEFAULT_FIB, raddr4->sin_addr, 0, 545 NHR_NONE, 0); 546 } else { 547 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)raddr; 548 struct in6_addr addr6; 549 uint32_t scopeid; 550 551 memset(&addr6, 0, sizeof(addr6)); 552 in6_splitscope((struct in6_addr *)&raddr6->sin6_addr, 553 &addr6, &scopeid); 554 nh = fib6_lookup(RT_DEFAULT_FIB, &addr6, scopeid, 555 NHR_NONE, 0); 556 } 557 558 if (nh == NULL) 559 err = EHOSTUNREACH; 560 else 561 *ifp = nh->nh_ifp; 562 CTR2(KTR_IW_CXGBE, "%s: return: %d", __func__, err); 563 return err; 564 } 565 566 static void 567 close_socket(struct socket *so) 568 { 569 uninit_iwarp_socket(so); 570 soclose(so); 571 } 572 573 static void 574 process_peer_close(struct c4iw_ep *ep) 575 { 576 struct c4iw_qp_attributes attrs = {0}; 577 int disconnect = 1; 578 int release = 0; 579 580 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep, 581 ep->com.so, states[ep->com.state]); 582 583 switch (ep->com.state) { 584 585 case MPA_REQ_WAIT: 586 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT DEAD", 587 __func__, ep); 588 /* Fallthrough */ 589 case MPA_REQ_SENT: 590 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT DEAD", 591 __func__, ep); 592 ep->com.state = DEAD; 593 connect_reply_upcall(ep, -ECONNABORTED); 594 595 disconnect = 0; 596 STOP_EP_TIMER(ep); 597 close_socket(ep->com.so); 598 deref_cm_id(&ep->com); 599 release = 1; 600 break; 601 602 case MPA_REQ_RCVD: 603 604 /* 605 * We're gonna mark this puppy DEAD, but keep 606 * the reference on it until the ULP accepts or 607 * rejects the CR. 608 */ 609 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING", 610 __func__, ep); 611 ep->com.state = CLOSING; 612 break; 613 614 case MPA_REP_SENT: 615 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING", 616 __func__, ep); 617 ep->com.state = CLOSING; 618 break; 619 620 case FPDU_MODE: 621 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING", 622 __func__, ep); 623 START_EP_TIMER(ep); 624 ep->com.state = CLOSING; 625 attrs.next_state = C4IW_QP_STATE_CLOSING; 626 c4iw_modify_qp(ep->com.dev, ep->com.qp, 627 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 628 peer_close_upcall(ep); 629 break; 630 631 case ABORTING: 632 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)", 633 __func__, ep); 634 disconnect = 0; 635 break; 636 637 case CLOSING: 638 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND", 639 __func__, ep); 640 ep->com.state = MORIBUND; 641 disconnect = 0; 642 break; 643 644 case MORIBUND: 645 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__, 646 ep); 647 STOP_EP_TIMER(ep); 648 if (ep->com.cm_id && ep->com.qp) { 649 attrs.next_state = C4IW_QP_STATE_IDLE; 650 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 651 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 652 } 653 close_socket(ep->com.so); 654 close_complete_upcall(ep, 0); 655 ep->com.state = DEAD; 656 release = 1; 657 disconnect = 0; 658 break; 659 660 case DEAD: 661 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)", 662 __func__, ep); 663 disconnect = 0; 664 break; 665 666 default: 667 panic("%s: ep %p state %d", __func__, ep, 668 ep->com.state); 669 break; 670 } 671 672 673 if (disconnect) { 674 675 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep); 676 c4iw_ep_disconnect(ep, 0, M_NOWAIT); 677 } 678 if (release) { 679 680 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep); 681 c4iw_put_ep(&ep->com); 682 } 683 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep); 684 return; 685 } 686 687 static void 688 process_conn_error(struct c4iw_ep *ep) 689 { 690 struct c4iw_qp_attributes attrs = {0}; 691 int ret; 692 int state; 693 694 state = ep->com.state; 695 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s", 696 __func__, ep, ep->com.so, ep->com.so->so_error, 697 states[ep->com.state]); 698 699 switch (state) { 700 701 case MPA_REQ_WAIT: 702 STOP_EP_TIMER(ep); 703 c4iw_put_ep(&ep->parent_ep->com); 704 break; 705 706 case MPA_REQ_SENT: 707 STOP_EP_TIMER(ep); 708 connect_reply_upcall(ep, -ECONNRESET); 709 break; 710 711 case MPA_REP_SENT: 712 ep->com.rpl_err = ECONNRESET; 713 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep); 714 break; 715 716 case MPA_REQ_RCVD: 717 break; 718 719 case MORIBUND: 720 case CLOSING: 721 STOP_EP_TIMER(ep); 722 /*FALLTHROUGH*/ 723 case FPDU_MODE: 724 725 if (ep->com.cm_id && ep->com.qp) { 726 727 attrs.next_state = C4IW_QP_STATE_ERROR; 728 ret = c4iw_modify_qp(ep->com.qp->rhp, 729 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 730 &attrs, 1); 731 if (ret) 732 log(LOG_ERR, 733 "%s - qp <- error failed!\n", 734 __func__); 735 } 736 peer_abort_upcall(ep); 737 break; 738 739 case ABORTING: 740 break; 741 742 case DEAD: 743 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!", 744 __func__, ep->com.so->so_error); 745 return; 746 747 default: 748 panic("%s: ep %p state %d", __func__, ep, state); 749 break; 750 } 751 752 if (state != ABORTING) { 753 close_socket(ep->com.so); 754 ep->com.state = DEAD; 755 c4iw_put_ep(&ep->com); 756 } 757 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep); 758 return; 759 } 760 761 static void 762 process_close_complete(struct c4iw_ep *ep) 763 { 764 struct c4iw_qp_attributes attrs = {0}; 765 int release = 0; 766 767 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep, 768 ep->com.so, states[ep->com.state]); 769 770 /* The cm_id may be null if we failed to connect */ 771 set_bit(CLOSE_CON_RPL, &ep->com.history); 772 773 switch (ep->com.state) { 774 775 case CLOSING: 776 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND", 777 __func__, ep); 778 ep->com.state = MORIBUND; 779 break; 780 781 case MORIBUND: 782 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__, 783 ep); 784 STOP_EP_TIMER(ep); 785 786 if ((ep->com.cm_id) && (ep->com.qp)) { 787 788 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE", 789 __func__, ep); 790 attrs.next_state = C4IW_QP_STATE_IDLE; 791 c4iw_modify_qp(ep->com.dev, 792 ep->com.qp, 793 C4IW_QP_ATTR_NEXT_STATE, 794 &attrs, 1); 795 } 796 797 close_socket(ep->com.so); 798 close_complete_upcall(ep, 0); 799 ep->com.state = DEAD; 800 release = 1; 801 break; 802 803 case ABORTING: 804 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep); 805 break; 806 807 case DEAD: 808 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep); 809 break; 810 default: 811 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p unknown ep state", 812 __func__, ep); 813 panic("%s:pcc6 %p unknown ep state", __func__, ep); 814 break; 815 } 816 817 if (release) { 818 819 CTR2(KTR_IW_CXGBE, "%s:pcc8 %p", __func__, ep); 820 release_ep_resources(ep); 821 } 822 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep); 823 return; 824 } 825 826 static void 827 setiwsockopt(struct socket *so) 828 { 829 int rc; 830 struct sockopt sopt; 831 int on = 1; 832 833 sopt.sopt_dir = SOPT_SET; 834 sopt.sopt_level = IPPROTO_TCP; 835 sopt.sopt_name = TCP_NODELAY; 836 sopt.sopt_val = (caddr_t)&on; 837 sopt.sopt_valsize = sizeof on; 838 sopt.sopt_td = NULL; 839 rc = -sosetopt(so, &sopt); 840 if (rc) { 841 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n", 842 __func__, so, rc); 843 } 844 } 845 846 static void 847 init_iwarp_socket(struct socket *so, void *arg) 848 { 849 if (SOLISTENING(so)) { 850 SOLISTEN_LOCK(so); 851 solisten_upcall_set(so, c4iw_so_upcall, arg); 852 so->so_state |= SS_NBIO; 853 SOLISTEN_UNLOCK(so); 854 } else { 855 SOCKBUF_LOCK(&so->so_rcv); 856 soupcall_set(so, SO_RCV, c4iw_so_upcall, arg); 857 so->so_state |= SS_NBIO; 858 SOCKBUF_UNLOCK(&so->so_rcv); 859 } 860 } 861 862 static void 863 uninit_iwarp_socket(struct socket *so) 864 { 865 if (SOLISTENING(so)) { 866 SOLISTEN_LOCK(so); 867 solisten_upcall_set(so, NULL, NULL); 868 SOLISTEN_UNLOCK(so); 869 } else { 870 SOCKBUF_LOCK(&so->so_rcv); 871 soupcall_clear(so, SO_RCV); 872 SOCKBUF_UNLOCK(&so->so_rcv); 873 } 874 } 875 876 static void 877 process_data(struct c4iw_ep *ep) 878 { 879 int ret = 0; 880 int disconnect = 0; 881 struct c4iw_qp_attributes attrs = {0}; 882 883 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sbused %d", __func__, 884 ep->com.so, ep, states[ep->com.state], sbused(&ep->com.so->so_rcv)); 885 886 switch (ep->com.state) { 887 case MPA_REQ_SENT: 888 disconnect = process_mpa_reply(ep); 889 break; 890 case MPA_REQ_WAIT: 891 disconnect = process_mpa_request(ep); 892 if (disconnect) 893 /* Refered in process_newconn() */ 894 c4iw_put_ep(&ep->parent_ep->com); 895 break; 896 case FPDU_MODE: 897 MPASS(ep->com.qp != NULL); 898 attrs.next_state = C4IW_QP_STATE_TERMINATE; 899 ret = c4iw_modify_qp(ep->com.dev, ep->com.qp, 900 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 901 if (ret != -EINPROGRESS) 902 disconnect = 1; 903 break; 904 default: 905 log(LOG_ERR, "%s: Unexpected streaming data. ep %p, " 906 "state %d, so %p, so_state 0x%x, sbused %u\n", 907 __func__, ep, ep->com.state, ep->com.so, 908 ep->com.so->so_state, sbused(&ep->com.so->so_rcv)); 909 break; 910 } 911 if (disconnect) 912 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); 913 914 } 915 916 static void 917 process_connected(struct c4iw_ep *ep) 918 { 919 struct socket *so = ep->com.so; 920 921 if ((so->so_state & SS_ISCONNECTED) && !so->so_error) { 922 if (send_mpa_req(ep)) 923 goto err; 924 } else { 925 connect_reply_upcall(ep, -so->so_error); 926 goto err; 927 } 928 return; 929 err: 930 close_socket(so); 931 ep->com.state = DEAD; 932 c4iw_put_ep(&ep->com); 933 return; 934 } 935 936 static inline int c4iw_zero_addr(struct sockaddr *addr) 937 { 938 struct in6_addr *ip6; 939 940 if (addr->sa_family == AF_INET) 941 return IN_ZERONET( 942 ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr)); 943 else { 944 ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; 945 return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | 946 ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; 947 } 948 } 949 950 static inline int c4iw_loopback_addr(struct sockaddr *addr) 951 { 952 if (addr->sa_family == AF_INET) 953 return IN_LOOPBACK( 954 ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 955 else 956 return IN6_IS_ADDR_LOOPBACK( 957 &((struct sockaddr_in6 *) addr)->sin6_addr); 958 } 959 960 static inline int c4iw_any_addr(struct sockaddr *addr) 961 { 962 return c4iw_zero_addr(addr) || c4iw_loopback_addr(addr); 963 } 964 965 static void 966 process_newconn(struct c4iw_listen_ep *master_lep, struct socket *new_so) 967 { 968 struct c4iw_listen_ep *real_lep = NULL; 969 struct c4iw_ep *new_ep = NULL; 970 struct sockaddr_in *remote = NULL; 971 int ret = 0; 972 973 MPASS(new_so != NULL); 974 975 if (c4iw_any_addr((struct sockaddr *)&master_lep->com.local_addr)) { 976 /* Here we need to find the 'real_lep' that belongs to the 977 * incomming socket's network interface, such that the newly 978 * created 'ep' can be attached to the real 'lep'. 979 */ 980 real_lep = find_real_listen_ep(master_lep, new_so); 981 if (real_lep == NULL) { 982 CTR2(KTR_IW_CXGBE, "%s: Could not find the real listen " 983 "ep for sock: %p", __func__, new_so); 984 log(LOG_ERR,"%s: Could not find the real listen ep for " 985 "sock: %p\n", __func__, new_so); 986 /* FIXME: properly free the 'new_so' in failure case. 987 * Use of soabort() and soclose() are not legal 988 * here(before soaccept()). 989 */ 990 return; 991 } 992 } else /* for Non-Wildcard address, master_lep is always the real_lep */ 993 real_lep = master_lep; 994 995 new_ep = alloc_ep(sizeof(*new_ep), GFP_KERNEL); 996 997 CTR6(KTR_IW_CXGBE, "%s: master_lep %p, real_lep: %p, new ep %p, " 998 "listening so %p, new so %p", __func__, master_lep, real_lep, 999 new_ep, master_lep->com.so, new_so); 1000 1001 new_ep->com.dev = real_lep->com.dev; 1002 new_ep->com.so = new_so; 1003 new_ep->com.cm_id = NULL; 1004 new_ep->com.thread = real_lep->com.thread; 1005 new_ep->parent_ep = real_lep; 1006 1007 GET_LOCAL_ADDR(&new_ep->com.local_addr, new_so); 1008 GET_REMOTE_ADDR(&new_ep->com.remote_addr, new_so); 1009 c4iw_get_ep(&real_lep->com); 1010 init_timer(&new_ep->timer); 1011 new_ep->com.state = MPA_REQ_WAIT; 1012 1013 setiwsockopt(new_so); 1014 ret = soaccept(new_so, (struct sockaddr **)&remote); 1015 if (ret != 0) { 1016 CTR4(KTR_IW_CXGBE, 1017 "%s:listen sock:%p, new sock:%p, ret:%d", 1018 __func__, master_lep->com.so, new_so, ret); 1019 if (remote != NULL) 1020 free(remote, M_SONAME); 1021 soclose(new_so); 1022 c4iw_put_ep(&new_ep->com); 1023 c4iw_put_ep(&real_lep->com); 1024 return; 1025 } 1026 free(remote, M_SONAME); 1027 1028 START_EP_TIMER(new_ep); 1029 1030 /* MPA request might have been queued up on the socket already, so we 1031 * initialize the socket/upcall_handler under lock to prevent processing 1032 * MPA request on another thread(via process_req()) simultaniously. 1033 */ 1034 c4iw_get_ep(&new_ep->com); /* Dereferenced at the end below, this is to 1035 avoid freeing of ep before ep unlock. */ 1036 mutex_lock(&new_ep->com.mutex); 1037 init_iwarp_socket(new_so, &new_ep->com); 1038 1039 ret = process_mpa_request(new_ep); 1040 if (ret) { 1041 /* ABORT */ 1042 c4iw_ep_disconnect(new_ep, 1, GFP_KERNEL); 1043 c4iw_put_ep(&real_lep->com); 1044 } 1045 mutex_unlock(&new_ep->com.mutex); 1046 c4iw_put_ep(&new_ep->com); 1047 return; 1048 } 1049 1050 static int 1051 add_ep_to_req_list(struct c4iw_ep *ep, int new_ep_event) 1052 { 1053 unsigned long flag; 1054 1055 spin_lock_irqsave(&req_lock, flag); 1056 if (ep && ep->com.so) { 1057 ep->com.ep_events |= new_ep_event; 1058 if (!ep->com.entry.tqe_prev) { 1059 c4iw_get_ep(&ep->com); 1060 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry); 1061 queue_work(c4iw_taskq, &c4iw_task); 1062 } 1063 } 1064 spin_unlock_irqrestore(&req_lock, flag); 1065 1066 return (0); 1067 } 1068 1069 static int 1070 c4iw_so_upcall(struct socket *so, void *arg, int waitflag) 1071 { 1072 struct c4iw_ep *ep = arg; 1073 1074 CTR6(KTR_IW_CXGBE, 1075 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p", 1076 __func__, so, so->so_state, ep, states[ep->com.state], 1077 ep->com.entry.tqe_prev); 1078 1079 MPASS(ep->com.so == so); 1080 /* 1081 * Wake up any threads waiting in rdma_init()/rdma_fini(), 1082 * with locks held. 1083 */ 1084 if (so->so_error || (ep->com.dev->rdev.flags & T4_FATAL_ERROR)) 1085 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 1086 add_ep_to_req_list(ep, C4IW_EVENT_SOCKET); 1087 1088 return (SU_OK); 1089 } 1090 1091 1092 static int 1093 terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) 1094 { 1095 struct adapter *sc = iq->adapter; 1096 const struct cpl_rdma_terminate *cpl = mtod(m, const void *); 1097 unsigned int tid = GET_TID(cpl); 1098 struct toepcb *toep = lookup_tid(sc, tid); 1099 struct socket *so; 1100 struct c4iw_ep *ep; 1101 1102 INP_WLOCK(toep->inp); 1103 so = inp_inpcbtosocket(toep->inp); 1104 ep = so->so_rcv.sb_upcallarg; 1105 INP_WUNLOCK(toep->inp); 1106 1107 CTR3(KTR_IW_CXGBE, "%s: so %p, ep %p", __func__, so, ep); 1108 add_ep_to_req_list(ep, C4IW_EVENT_TERM); 1109 1110 return 0; 1111 } 1112 1113 static void 1114 process_socket_event(struct c4iw_ep *ep) 1115 { 1116 int state = ep->com.state; 1117 struct socket *so = ep->com.so; 1118 1119 if (ep->com.state == DEAD) { 1120 CTR3(KTR_IW_CXGBE, "%s: Pending socket event discarded " 1121 "ep %p ep_state %s", __func__, ep, states[state]); 1122 return; 1123 } 1124 1125 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, " 1126 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state, 1127 so->so_error, so->so_rcv.sb_state, ep, states[state]); 1128 1129 if (state == CONNECTING) { 1130 process_connected(ep); 1131 return; 1132 } 1133 1134 if (state == LISTEN) { 1135 struct c4iw_listen_ep *lep = (struct c4iw_listen_ep *)ep; 1136 struct socket *listen_so = so, *new_so = NULL; 1137 int error = 0; 1138 1139 SOLISTEN_LOCK(listen_so); 1140 do { 1141 error = solisten_dequeue(listen_so, &new_so, 1142 SOCK_NONBLOCK); 1143 if (error) { 1144 CTR4(KTR_IW_CXGBE, "%s: lep %p listen_so %p " 1145 "error %d", __func__, lep, listen_so, 1146 error); 1147 return; 1148 } 1149 process_newconn(lep, new_so); 1150 1151 /* solisten_dequeue() unlocks while return, so aquire 1152 * lock again for sol_qlen and also for next iteration. 1153 */ 1154 SOLISTEN_LOCK(listen_so); 1155 } while (listen_so->sol_qlen); 1156 SOLISTEN_UNLOCK(listen_so); 1157 1158 return; 1159 } 1160 1161 /* connection error */ 1162 if (so->so_error) { 1163 process_conn_error(ep); 1164 return; 1165 } 1166 1167 /* peer close */ 1168 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state <= CLOSING) { 1169 process_peer_close(ep); 1170 /* 1171 * check whether socket disconnect event is pending before 1172 * returning. Fallthrough if yes. 1173 */ 1174 if (!(so->so_state & SS_ISDISCONNECTED)) 1175 return; 1176 } 1177 1178 /* close complete */ 1179 if (so->so_state & SS_ISDISCONNECTED) { 1180 process_close_complete(ep); 1181 return; 1182 } 1183 1184 /* rx data */ 1185 if (sbused(&ep->com.so->so_rcv)) { 1186 process_data(ep); 1187 return; 1188 } 1189 1190 /* Socket events for 'MPA Request Received' and 'Close Complete' 1191 * were already processed earlier in their previous events handlers. 1192 * Hence, these socket events are skipped. 1193 * And any other socket events must have handled above. 1194 */ 1195 MPASS((ep->com.state == MPA_REQ_RCVD) || (ep->com.state == MORIBUND)); 1196 1197 if ((ep->com.state != MPA_REQ_RCVD) && (ep->com.state != MORIBUND)) 1198 log(LOG_ERR, "%s: Unprocessed socket event so %p, " 1199 "so_state 0x%x, so_err %d, sb_state 0x%x, ep %p, ep_state %s\n", 1200 __func__, so, so->so_state, so->so_error, so->so_rcv.sb_state, 1201 ep, states[state]); 1202 1203 } 1204 1205 SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 1206 "iw_cxgbe driver parameters"); 1207 1208 static int dack_mode = 0; 1209 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RWTUN, &dack_mode, 0, 1210 "Delayed ack mode (default = 0)"); 1211 1212 int c4iw_max_read_depth = 8; 1213 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RWTUN, &c4iw_max_read_depth, 0, 1214 "Per-connection max ORD/IRD (default = 8)"); 1215 1216 static int enable_tcp_timestamps; 1217 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RWTUN, &enable_tcp_timestamps, 0, 1218 "Enable tcp timestamps (default = 0)"); 1219 1220 static int enable_tcp_sack; 1221 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RWTUN, &enable_tcp_sack, 0, 1222 "Enable tcp SACK (default = 0)"); 1223 1224 static int enable_tcp_window_scaling = 1; 1225 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RWTUN, &enable_tcp_window_scaling, 0, 1226 "Enable tcp window scaling (default = 1)"); 1227 1228 int c4iw_debug = 0; 1229 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RWTUN, &c4iw_debug, 0, 1230 "Enable debug logging (default = 0)"); 1231 1232 static int peer2peer = 1; 1233 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RWTUN, &peer2peer, 0, 1234 "Support peer2peer ULPs (default = 1)"); 1235 1236 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 1237 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RWTUN, &p2p_type, 0, 1238 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)"); 1239 1240 static int ep_timeout_secs = 60; 1241 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RWTUN, &ep_timeout_secs, 0, 1242 "CM Endpoint operation timeout in seconds (default = 60)"); 1243 1244 static int mpa_rev = 1; 1245 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RWTUN, &mpa_rev, 0, 1246 "MPA Revision, 0 supports amso1100, 1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)"); 1247 1248 static int markers_enabled; 1249 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RWTUN, &markers_enabled, 0, 1250 "Enable MPA MARKERS (default(0) = disabled)"); 1251 1252 static int crc_enabled = 1; 1253 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RWTUN, &crc_enabled, 0, 1254 "Enable MPA CRC (default(1) = enabled)"); 1255 1256 static int rcv_win = 256 * 1024; 1257 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RWTUN, &rcv_win, 0, 1258 "TCP receive window in bytes (default = 256KB)"); 1259 1260 static int snd_win = 128 * 1024; 1261 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RWTUN, &snd_win, 0, 1262 "TCP send window in bytes (default = 128KB)"); 1263 1264 int use_dsgl = 1; 1265 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, use_dsgl, CTLFLAG_RWTUN, &use_dsgl, 0, 1266 "Use DSGL for PBL/FastReg (default=1)"); 1267 1268 int inline_threshold = 128; 1269 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, inline_threshold, CTLFLAG_RWTUN, &inline_threshold, 0, 1270 "inline vs dsgl threshold (default=128)"); 1271 1272 static int reuseaddr = 0; 1273 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, reuseaddr, CTLFLAG_RWTUN, &reuseaddr, 0, 1274 "Enable SO_REUSEADDR & SO_REUSEPORT socket options on all iWARP client connections(default = 0)"); 1275 1276 static void 1277 start_ep_timer(struct c4iw_ep *ep) 1278 { 1279 1280 if (timer_pending(&ep->timer)) { 1281 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep); 1282 printk(KERN_ERR "%s timer already started! ep %p\n", __func__, 1283 ep); 1284 return; 1285 } 1286 clear_bit(TIMEOUT, &ep->com.flags); 1287 c4iw_get_ep(&ep->com); 1288 ep->timer.expires = jiffies + ep_timeout_secs * HZ; 1289 ep->timer.data = (unsigned long)ep; 1290 ep->timer.function = ep_timeout; 1291 add_timer(&ep->timer); 1292 } 1293 1294 static int 1295 stop_ep_timer(struct c4iw_ep *ep) 1296 { 1297 1298 del_timer_sync(&ep->timer); 1299 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 1300 c4iw_put_ep(&ep->com); 1301 return 0; 1302 } 1303 return 1; 1304 } 1305 1306 static void * 1307 alloc_ep(int size, gfp_t gfp) 1308 { 1309 struct c4iw_ep_common *epc; 1310 1311 epc = kzalloc(size, gfp); 1312 if (epc == NULL) 1313 return (NULL); 1314 1315 kref_init(&epc->kref); 1316 mutex_init(&epc->mutex); 1317 c4iw_init_wr_wait(&epc->wr_wait); 1318 1319 return (epc); 1320 } 1321 1322 void _c4iw_free_ep(struct kref *kref) 1323 { 1324 struct c4iw_ep *ep; 1325 struct c4iw_ep_common *epc; 1326 1327 ep = container_of(kref, struct c4iw_ep, com.kref); 1328 epc = &ep->com; 1329 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list", 1330 __func__, epc)); 1331 if (test_bit(QP_REFERENCED, &ep->com.flags)) 1332 deref_qp(ep); 1333 CTR4(KTR_IW_CXGBE, "%s: ep %p, history 0x%lx, flags 0x%lx", 1334 __func__, ep, epc->history, epc->flags); 1335 kfree(ep); 1336 } 1337 1338 static void release_ep_resources(struct c4iw_ep *ep) 1339 { 1340 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep); 1341 set_bit(RELEASE_RESOURCES, &ep->com.flags); 1342 c4iw_put_ep(&ep->com); 1343 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep); 1344 } 1345 1346 static int 1347 send_mpa_req(struct c4iw_ep *ep) 1348 { 1349 int mpalen; 1350 struct mpa_message *mpa; 1351 struct mpa_v2_conn_params mpa_v2_params; 1352 struct mbuf *m; 1353 char mpa_rev_to_use = mpa_rev; 1354 int err = 0; 1355 1356 if (ep->retry_with_mpa_v1) 1357 mpa_rev_to_use = 1; 1358 mpalen = sizeof(*mpa) + ep->plen; 1359 if (mpa_rev_to_use == 2) 1360 mpalen += sizeof(struct mpa_v2_conn_params); 1361 1362 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1363 if (mpa == NULL) { 1364 err = -ENOMEM; 1365 CTR3(KTR_IW_CXGBE, "%s:smr1 ep: %p , error: %d", 1366 __func__, ep, err); 1367 goto err; 1368 } 1369 1370 memset(mpa, 0, mpalen); 1371 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 1372 mpa->flags = (crc_enabled ? MPA_CRC : 0) | 1373 (markers_enabled ? MPA_MARKERS : 0) | 1374 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); 1375 mpa->private_data_size = htons(ep->plen); 1376 mpa->revision = mpa_rev_to_use; 1377 1378 if (mpa_rev_to_use == 1) { 1379 ep->tried_with_mpa_v1 = 1; 1380 ep->retry_with_mpa_v1 = 0; 1381 } 1382 1383 if (mpa_rev_to_use == 2) { 1384 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1385 sizeof(struct mpa_v2_conn_params)); 1386 mpa_v2_params.ird = htons((u16)ep->ird); 1387 mpa_v2_params.ord = htons((u16)ep->ord); 1388 1389 if (peer2peer) { 1390 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1391 1392 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1393 mpa_v2_params.ord |= 1394 htons(MPA_V2_RDMA_WRITE_RTR); 1395 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1396 mpa_v2_params.ord |= 1397 htons(MPA_V2_RDMA_READ_RTR); 1398 } 1399 } 1400 memcpy(mpa->private_data, &mpa_v2_params, 1401 sizeof(struct mpa_v2_conn_params)); 1402 1403 if (ep->plen) { 1404 1405 memcpy(mpa->private_data + 1406 sizeof(struct mpa_v2_conn_params), 1407 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1408 } 1409 } else { 1410 1411 if (ep->plen) 1412 memcpy(mpa->private_data, 1413 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1414 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep); 1415 } 1416 1417 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1418 if (m == NULL) { 1419 err = -ENOMEM; 1420 CTR3(KTR_IW_CXGBE, "%s:smr2 ep: %p , error: %d", 1421 __func__, ep, err); 1422 free(mpa, M_CXGBE); 1423 goto err; 1424 } 1425 m_copyback(m, 0, mpalen, (void *)mpa); 1426 free(mpa, M_CXGBE); 1427 1428 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1429 ep->com.thread); 1430 if (err) { 1431 CTR3(KTR_IW_CXGBE, "%s:smr3 ep: %p , error: %d", 1432 __func__, ep, err); 1433 goto err; 1434 } 1435 1436 START_EP_TIMER(ep); 1437 ep->com.state = MPA_REQ_SENT; 1438 ep->mpa_attr.initiator = 1; 1439 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1440 return 0; 1441 err: 1442 connect_reply_upcall(ep, err); 1443 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1444 return err; 1445 } 1446 1447 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 1448 { 1449 int mpalen ; 1450 struct mpa_message *mpa; 1451 struct mpa_v2_conn_params mpa_v2_params; 1452 struct mbuf *m; 1453 int err; 1454 1455 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid, 1456 ep->plen); 1457 1458 mpalen = sizeof(*mpa) + plen; 1459 1460 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1461 1462 mpalen += sizeof(struct mpa_v2_conn_params); 1463 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep, 1464 ep->mpa_attr.version, mpalen); 1465 } 1466 1467 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1468 if (mpa == NULL) 1469 return (-ENOMEM); 1470 1471 memset(mpa, 0, mpalen); 1472 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1473 mpa->flags = MPA_REJECT; 1474 mpa->revision = mpa_rev; 1475 mpa->private_data_size = htons(plen); 1476 1477 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1478 1479 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1480 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1481 sizeof(struct mpa_v2_conn_params)); 1482 mpa_v2_params.ird = htons(((u16)ep->ird) | 1483 (peer2peer ? MPA_V2_PEER2PEER_MODEL : 1484 0)); 1485 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 1486 (p2p_type == 1487 FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 1488 MPA_V2_RDMA_WRITE_RTR : p2p_type == 1489 FW_RI_INIT_P2PTYPE_READ_REQ ? 1490 MPA_V2_RDMA_READ_RTR : 0) : 0)); 1491 memcpy(mpa->private_data, &mpa_v2_params, 1492 sizeof(struct mpa_v2_conn_params)); 1493 1494 if (ep->plen) 1495 memcpy(mpa->private_data + 1496 sizeof(struct mpa_v2_conn_params), pdata, plen); 1497 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep, 1498 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen); 1499 } else 1500 if (plen) 1501 memcpy(mpa->private_data, pdata, plen); 1502 1503 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1504 if (m == NULL) { 1505 free(mpa, M_CXGBE); 1506 return (-ENOMEM); 1507 } 1508 m_copyback(m, 0, mpalen, (void *)mpa); 1509 free(mpa, M_CXGBE); 1510 1511 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread); 1512 if (!err) 1513 ep->snd_seq += mpalen; 1514 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err); 1515 return err; 1516 } 1517 1518 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 1519 { 1520 int mpalen; 1521 struct mpa_message *mpa; 1522 struct mbuf *m; 1523 struct mpa_v2_conn_params mpa_v2_params; 1524 int err; 1525 1526 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep); 1527 1528 mpalen = sizeof(*mpa) + plen; 1529 1530 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1531 1532 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep, 1533 ep->mpa_attr.version); 1534 mpalen += sizeof(struct mpa_v2_conn_params); 1535 } 1536 1537 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1538 if (mpa == NULL) 1539 return (-ENOMEM); 1540 1541 memset(mpa, 0, sizeof(*mpa)); 1542 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1543 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 1544 (markers_enabled ? MPA_MARKERS : 0); 1545 mpa->revision = ep->mpa_attr.version; 1546 mpa->private_data_size = htons(plen); 1547 1548 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1549 1550 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1551 mpa->private_data_size += 1552 htons(sizeof(struct mpa_v2_conn_params)); 1553 mpa_v2_params.ird = htons((u16)ep->ird); 1554 mpa_v2_params.ord = htons((u16)ep->ord); 1555 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep, 1556 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord); 1557 1558 if (peer2peer && (ep->mpa_attr.p2p_type != 1559 FW_RI_INIT_P2PTYPE_DISABLED)) { 1560 1561 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1562 1563 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1564 1565 mpa_v2_params.ord |= 1566 htons(MPA_V2_RDMA_WRITE_RTR); 1567 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d", 1568 __func__, ep, p2p_type, mpa_v2_params.ird, 1569 mpa_v2_params.ord); 1570 } 1571 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1572 1573 mpa_v2_params.ord |= 1574 htons(MPA_V2_RDMA_READ_RTR); 1575 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d", 1576 __func__, ep, p2p_type, mpa_v2_params.ird, 1577 mpa_v2_params.ord); 1578 } 1579 } 1580 1581 memcpy(mpa->private_data, &mpa_v2_params, 1582 sizeof(struct mpa_v2_conn_params)); 1583 1584 if (ep->plen) 1585 memcpy(mpa->private_data + 1586 sizeof(struct mpa_v2_conn_params), pdata, plen); 1587 } else 1588 if (plen) 1589 memcpy(mpa->private_data, pdata, plen); 1590 1591 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1592 if (m == NULL) { 1593 free(mpa, M_CXGBE); 1594 return (-ENOMEM); 1595 } 1596 m_copyback(m, 0, mpalen, (void *)mpa); 1597 free(mpa, M_CXGBE); 1598 1599 1600 ep->com.state = MPA_REP_SENT; 1601 ep->snd_seq += mpalen; 1602 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1603 ep->com.thread); 1604 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err); 1605 return err; 1606 } 1607 1608 1609 1610 static void close_complete_upcall(struct c4iw_ep *ep, int status) 1611 { 1612 struct iw_cm_event event; 1613 1614 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep); 1615 memset(&event, 0, sizeof(event)); 1616 event.event = IW_CM_EVENT_CLOSE; 1617 event.status = status; 1618 1619 if (ep->com.cm_id) { 1620 1621 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep); 1622 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1623 deref_cm_id(&ep->com); 1624 set_bit(CLOSE_UPCALL, &ep->com.history); 1625 } 1626 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep); 1627 } 1628 1629 static int 1630 send_abort(struct c4iw_ep *ep) 1631 { 1632 struct socket *so = ep->com.so; 1633 struct sockopt sopt; 1634 int rc; 1635 struct linger l; 1636 1637 CTR5(KTR_IW_CXGBE, "%s ep %p so %p state %s tid %d", __func__, ep, so, 1638 states[ep->com.state], ep->hwtid); 1639 1640 l.l_onoff = 1; 1641 l.l_linger = 0; 1642 1643 /* linger_time of 0 forces RST to be sent */ 1644 sopt.sopt_dir = SOPT_SET; 1645 sopt.sopt_level = SOL_SOCKET; 1646 sopt.sopt_name = SO_LINGER; 1647 sopt.sopt_val = (caddr_t)&l; 1648 sopt.sopt_valsize = sizeof l; 1649 sopt.sopt_td = NULL; 1650 rc = -sosetopt(so, &sopt); 1651 if (rc != 0) { 1652 log(LOG_ERR, "%s: sosetopt(%p, linger = 0) failed with %d.\n", 1653 __func__, so, rc); 1654 } 1655 1656 uninit_iwarp_socket(so); 1657 soclose(so); 1658 set_bit(ABORT_CONN, &ep->com.history); 1659 1660 /* 1661 * TBD: iw_cxgbe driver should receive ABORT reply for every ABORT 1662 * request it has sent. But the current TOE driver is not propagating 1663 * this ABORT reply event (via do_abort_rpl) to iw_cxgbe. So as a work- 1664 * around de-refererece 'ep' here instead of doing it in abort_rpl() 1665 * handler(not yet implemented) of iw_cxgbe driver. 1666 */ 1667 release_ep_resources(ep); 1668 ep->com.state = DEAD; 1669 1670 return (0); 1671 } 1672 1673 static void peer_close_upcall(struct c4iw_ep *ep) 1674 { 1675 struct iw_cm_event event; 1676 1677 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep); 1678 memset(&event, 0, sizeof(event)); 1679 event.event = IW_CM_EVENT_DISCONNECT; 1680 1681 if (ep->com.cm_id) { 1682 1683 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep); 1684 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1685 set_bit(DISCONN_UPCALL, &ep->com.history); 1686 } 1687 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep); 1688 } 1689 1690 static void peer_abort_upcall(struct c4iw_ep *ep) 1691 { 1692 struct iw_cm_event event; 1693 1694 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep); 1695 memset(&event, 0, sizeof(event)); 1696 event.event = IW_CM_EVENT_CLOSE; 1697 event.status = -ECONNRESET; 1698 1699 if (ep->com.cm_id) { 1700 1701 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep); 1702 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1703 deref_cm_id(&ep->com); 1704 set_bit(ABORT_UPCALL, &ep->com.history); 1705 } 1706 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep); 1707 } 1708 1709 static void connect_reply_upcall(struct c4iw_ep *ep, int status) 1710 { 1711 struct iw_cm_event event; 1712 1713 CTR3(KTR_IW_CXGBE, "%s:cruB %p, status: %d", __func__, ep, status); 1714 memset(&event, 0, sizeof(event)); 1715 event.event = IW_CM_EVENT_CONNECT_REPLY; 1716 event.status = ((status == -ECONNABORTED) || (status == -EPIPE)) ? 1717 -ECONNRESET : status; 1718 event.local_addr = ep->com.local_addr; 1719 event.remote_addr = ep->com.remote_addr; 1720 1721 if ((status == 0) || (status == -ECONNREFUSED)) { 1722 1723 if (!ep->tried_with_mpa_v1) { 1724 1725 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep); 1726 /* this means MPA_v2 is used */ 1727 event.ord = ep->ird; 1728 event.ird = ep->ord; 1729 event.private_data_len = ep->plen - 1730 sizeof(struct mpa_v2_conn_params); 1731 event.private_data = ep->mpa_pkt + 1732 sizeof(struct mpa_message) + 1733 sizeof(struct mpa_v2_conn_params); 1734 } else { 1735 1736 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep); 1737 /* this means MPA_v1 is used */ 1738 event.ord = c4iw_max_read_depth; 1739 event.ird = c4iw_max_read_depth; 1740 event.private_data_len = ep->plen; 1741 event.private_data = ep->mpa_pkt + 1742 sizeof(struct mpa_message); 1743 } 1744 } 1745 1746 if (ep->com.cm_id) { 1747 1748 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep); 1749 set_bit(CONN_RPL_UPCALL, &ep->com.history); 1750 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1751 } 1752 1753 if(status == -ECONNABORTED) { 1754 1755 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status); 1756 return; 1757 } 1758 1759 if (status < 0) { 1760 1761 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status); 1762 deref_cm_id(&ep->com); 1763 } 1764 1765 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep); 1766 } 1767 1768 static int connect_request_upcall(struct c4iw_ep *ep) 1769 { 1770 struct iw_cm_event event; 1771 int ret; 1772 1773 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep, 1774 ep->tried_with_mpa_v1); 1775 1776 memset(&event, 0, sizeof(event)); 1777 event.event = IW_CM_EVENT_CONNECT_REQUEST; 1778 event.local_addr = ep->com.local_addr; 1779 event.remote_addr = ep->com.remote_addr; 1780 event.provider_data = ep; 1781 1782 if (!ep->tried_with_mpa_v1) { 1783 /* this means MPA_v2 is used */ 1784 event.ord = ep->ord; 1785 event.ird = ep->ird; 1786 event.private_data_len = ep->plen - 1787 sizeof(struct mpa_v2_conn_params); 1788 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 1789 sizeof(struct mpa_v2_conn_params); 1790 } else { 1791 1792 /* this means MPA_v1 is used. Send max supported */ 1793 event.ord = c4iw_max_read_depth; 1794 event.ird = c4iw_max_read_depth; 1795 event.private_data_len = ep->plen; 1796 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 1797 } 1798 1799 c4iw_get_ep(&ep->com); 1800 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, 1801 &event); 1802 if(ret) { 1803 CTR3(KTR_IW_CXGBE, "%s: ep %p, Failure while notifying event to" 1804 " IWCM, err:%d", __func__, ep, ret); 1805 c4iw_put_ep(&ep->com); 1806 } else 1807 /* Dereference parent_ep only in success case. 1808 * In case of failure, parent_ep is dereferenced by the caller 1809 * of process_mpa_request(). 1810 */ 1811 c4iw_put_ep(&ep->parent_ep->com); 1812 1813 set_bit(CONNREQ_UPCALL, &ep->com.history); 1814 return ret; 1815 } 1816 1817 static void established_upcall(struct c4iw_ep *ep) 1818 { 1819 struct iw_cm_event event; 1820 1821 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep); 1822 memset(&event, 0, sizeof(event)); 1823 event.event = IW_CM_EVENT_ESTABLISHED; 1824 event.ird = ep->ord; 1825 event.ord = ep->ird; 1826 1827 if (ep->com.cm_id) { 1828 1829 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep); 1830 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1831 set_bit(ESTAB_UPCALL, &ep->com.history); 1832 } 1833 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep); 1834 } 1835 1836 1837 #define RELAXED_IRD_NEGOTIATION 1 1838 1839 /* 1840 * process_mpa_reply - process streaming mode MPA reply 1841 * 1842 * Returns: 1843 * 1844 * 0 upon success indicating a connect request was delivered to the ULP 1845 * or the mpa request is incomplete but valid so far. 1846 * 1847 * 1 if a failure requires the caller to close the connection. 1848 * 1849 * 2 if a failure requires the caller to abort the connection. 1850 */ 1851 static int process_mpa_reply(struct c4iw_ep *ep) 1852 { 1853 struct mpa_message *mpa; 1854 struct mpa_v2_conn_params *mpa_v2_params; 1855 u16 plen; 1856 u16 resp_ird, resp_ord; 1857 u8 rtr_mismatch = 0, insuff_ird = 0; 1858 struct c4iw_qp_attributes attrs = {0}; 1859 enum c4iw_qp_attr_mask mask; 1860 int err; 1861 struct mbuf *top, *m; 1862 int flags = MSG_DONTWAIT; 1863 struct uio uio; 1864 int disconnect = 0; 1865 1866 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep); 1867 1868 /* 1869 * Stop mpa timer. If it expired, then 1870 * we ignore the MPA reply. process_timeout() 1871 * will abort the connection. 1872 */ 1873 if (STOP_EP_TIMER(ep)) 1874 return 0; 1875 1876 uio.uio_resid = 1000000; 1877 uio.uio_td = ep->com.thread; 1878 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags); 1879 1880 if (err) { 1881 1882 if (err == EWOULDBLOCK) { 1883 1884 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep); 1885 START_EP_TIMER(ep); 1886 return 0; 1887 } 1888 err = -err; 1889 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep); 1890 goto err; 1891 } 1892 1893 if (ep->com.so->so_rcv.sb_mb) { 1894 1895 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep); 1896 printf("%s data after soreceive called! so %p sb_mb %p top %p\n", 1897 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top); 1898 } 1899 1900 m = top; 1901 1902 do { 1903 1904 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep); 1905 /* 1906 * If we get more than the supported amount of private data 1907 * then we must fail this connection. 1908 */ 1909 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) { 1910 1911 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep, 1912 ep->mpa_pkt_len + m->m_len); 1913 err = (-EINVAL); 1914 goto err_stop_timer; 1915 } 1916 1917 /* 1918 * copy the new data into our accumulation buffer. 1919 */ 1920 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len])); 1921 ep->mpa_pkt_len += m->m_len; 1922 if (!m->m_next) 1923 m = m->m_nextpkt; 1924 else 1925 m = m->m_next; 1926 } while (m); 1927 1928 m_freem(top); 1929 /* 1930 * if we don't even have the mpa message, then bail. 1931 */ 1932 if (ep->mpa_pkt_len < sizeof(*mpa)) { 1933 return 0; 1934 } 1935 mpa = (struct mpa_message *) ep->mpa_pkt; 1936 1937 /* Validate MPA header. */ 1938 if (mpa->revision > mpa_rev) { 1939 1940 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep, 1941 mpa->revision, mpa_rev); 1942 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, " 1943 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1944 err = -EPROTO; 1945 goto err_stop_timer; 1946 } 1947 1948 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1949 1950 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep); 1951 err = -EPROTO; 1952 goto err_stop_timer; 1953 } 1954 1955 plen = ntohs(mpa->private_data_size); 1956 1957 /* 1958 * Fail if there's too much private data. 1959 */ 1960 if (plen > MPA_MAX_PRIVATE_DATA) { 1961 1962 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep); 1963 err = -EPROTO; 1964 goto err_stop_timer; 1965 } 1966 1967 /* 1968 * If plen does not account for pkt size 1969 */ 1970 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1971 1972 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep); 1973 STOP_EP_TIMER(ep); 1974 err = -EPROTO; 1975 goto err_stop_timer; 1976 } 1977 1978 ep->plen = (u8) plen; 1979 1980 /* 1981 * If we don't have all the pdata yet, then bail. 1982 * We'll continue process when more data arrives. 1983 */ 1984 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) { 1985 1986 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep); 1987 return 0; 1988 } 1989 1990 if (mpa->flags & MPA_REJECT) { 1991 1992 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep); 1993 err = -ECONNREFUSED; 1994 goto err_stop_timer; 1995 } 1996 1997 /* 1998 * If we get here we have accumulated the entire mpa 1999 * start reply message including private data. And 2000 * the MPA header is valid. 2001 */ 2002 ep->com.state = FPDU_MODE; 2003 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2004 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2005 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2006 ep->mpa_attr.version = mpa->revision; 2007 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2008 2009 if (mpa->revision == 2) { 2010 2011 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep); 2012 ep->mpa_attr.enhanced_rdma_conn = 2013 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2014 2015 if (ep->mpa_attr.enhanced_rdma_conn) { 2016 2017 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep); 2018 mpa_v2_params = (struct mpa_v2_conn_params *) 2019 (ep->mpa_pkt + sizeof(*mpa)); 2020 resp_ird = ntohs(mpa_v2_params->ird) & 2021 MPA_V2_IRD_ORD_MASK; 2022 resp_ord = ntohs(mpa_v2_params->ord) & 2023 MPA_V2_IRD_ORD_MASK; 2024 2025 /* 2026 * This is a double-check. Ideally, below checks are 2027 * not required since ird/ord stuff has been taken 2028 * care of in c4iw_accept_cr 2029 */ 2030 if (ep->ird < resp_ord) { 2031 if (RELAXED_IRD_NEGOTIATION && resp_ord <= 2032 ep->com.dev->rdev.adap->params.max_ordird_qp) 2033 ep->ird = resp_ord; 2034 else 2035 insuff_ird = 1; 2036 } else if (ep->ird > resp_ord) { 2037 ep->ird = resp_ord; 2038 } 2039 if (ep->ord > resp_ird) { 2040 if (RELAXED_IRD_NEGOTIATION) 2041 ep->ord = resp_ird; 2042 else 2043 insuff_ird = 1; 2044 } 2045 if (insuff_ird) { 2046 err = -ENOMEM; 2047 ep->ird = resp_ord; 2048 ep->ord = resp_ird; 2049 } 2050 2051 if (ntohs(mpa_v2_params->ird) & 2052 MPA_V2_PEER2PEER_MODEL) { 2053 2054 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep); 2055 if (ntohs(mpa_v2_params->ord) & 2056 MPA_V2_RDMA_WRITE_RTR) { 2057 2058 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep); 2059 ep->mpa_attr.p2p_type = 2060 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2061 } 2062 else if (ntohs(mpa_v2_params->ord) & 2063 MPA_V2_RDMA_READ_RTR) { 2064 2065 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep); 2066 ep->mpa_attr.p2p_type = 2067 FW_RI_INIT_P2PTYPE_READ_REQ; 2068 } 2069 } 2070 } 2071 } else { 2072 2073 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep); 2074 2075 if (mpa->revision == 1) { 2076 2077 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep); 2078 2079 if (peer2peer) { 2080 2081 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep); 2082 ep->mpa_attr.p2p_type = p2p_type; 2083 } 2084 } 2085 } 2086 2087 if (set_tcpinfo(ep)) { 2088 2089 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep); 2090 printf("%s set_tcpinfo error\n", __func__); 2091 err = -ECONNRESET; 2092 goto err; 2093 } 2094 2095 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, " 2096 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__, 2097 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2098 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 2099 ep->mpa_attr.p2p_type); 2100 2101 /* 2102 * If responder's RTR does not match with that of initiator, assign 2103 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 2104 * generated when moving QP to RTS state. 2105 * A TERM message will be sent after QP has moved to RTS state 2106 */ 2107 if ((ep->mpa_attr.version == 2) && peer2peer && 2108 (ep->mpa_attr.p2p_type != p2p_type)) { 2109 2110 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep); 2111 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2112 rtr_mismatch = 1; 2113 } 2114 2115 2116 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2117 attrs.mpa_attr = ep->mpa_attr; 2118 attrs.max_ird = ep->ird; 2119 attrs.max_ord = ep->ord; 2120 attrs.llp_stream_handle = ep; 2121 attrs.next_state = C4IW_QP_STATE_RTS; 2122 2123 mask = C4IW_QP_ATTR_NEXT_STATE | 2124 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 2125 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 2126 2127 /* bind QP and TID with INIT_WR */ 2128 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2129 2130 if (err) { 2131 2132 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep); 2133 goto err; 2134 } 2135 2136 /* 2137 * If responder's RTR requirement did not match with what initiator 2138 * supports, generate TERM message 2139 */ 2140 if (rtr_mismatch) { 2141 2142 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep); 2143 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 2144 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2145 attrs.ecode = MPA_NOMATCH_RTR; 2146 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2147 attrs.send_term = 1; 2148 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2149 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2150 err = -ENOMEM; 2151 disconnect = 1; 2152 goto out; 2153 } 2154 2155 /* 2156 * Generate TERM if initiator IRD is not sufficient for responder 2157 * provided ORD. Currently, we do the same behaviour even when 2158 * responder provided IRD is also not sufficient as regards to 2159 * initiator ORD. 2160 */ 2161 if (insuff_ird) { 2162 2163 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep); 2164 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 2165 __func__); 2166 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2167 attrs.ecode = MPA_INSUFF_IRD; 2168 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2169 attrs.send_term = 1; 2170 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2171 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2172 err = -ENOMEM; 2173 disconnect = 1; 2174 goto out; 2175 } 2176 goto out; 2177 err_stop_timer: 2178 STOP_EP_TIMER(ep); 2179 err: 2180 disconnect = 2; 2181 out: 2182 connect_reply_upcall(ep, err); 2183 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep); 2184 return disconnect; 2185 } 2186 2187 /* 2188 * process_mpa_request - process streaming mode MPA request 2189 * 2190 * Returns: 2191 * 2192 * 0 upon success indicating a connect request was delivered to the ULP 2193 * or the mpa request is incomplete but valid so far. 2194 * 2195 * 1 if a failure requires the caller to close the connection. 2196 * 2197 * 2 if a failure requires the caller to abort the connection. 2198 */ 2199 static int 2200 process_mpa_request(struct c4iw_ep *ep) 2201 { 2202 struct mpa_message *mpa; 2203 struct mpa_v2_conn_params *mpa_v2_params; 2204 u16 plen; 2205 int flags = MSG_DONTWAIT; 2206 int rc; 2207 struct iovec iov; 2208 struct uio uio; 2209 enum c4iw_ep_state state = ep->com.state; 2210 2211 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]); 2212 2213 if (state != MPA_REQ_WAIT) 2214 return 0; 2215 2216 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len]; 2217 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2218 uio.uio_iov = &iov; 2219 uio.uio_iovcnt = 1; 2220 uio.uio_offset = 0; 2221 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2222 uio.uio_segflg = UIO_SYSSPACE; 2223 uio.uio_rw = UIO_READ; 2224 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */ 2225 2226 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags); 2227 if (rc == EAGAIN) 2228 return 0; 2229 else if (rc) 2230 goto err_stop_timer; 2231 2232 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data", 2233 __func__, ep->com.so)); 2234 ep->mpa_pkt_len += uio.uio_offset; 2235 2236 /* 2237 * If we get more than the supported amount of private data then we must 2238 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another 2239 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last 2240 * byte is filled by the soreceive above. 2241 */ 2242 2243 /* Don't even have the MPA message. Wait for more data to arrive. */ 2244 if (ep->mpa_pkt_len < sizeof(*mpa)) 2245 return 0; 2246 mpa = (struct mpa_message *) ep->mpa_pkt; 2247 2248 /* 2249 * Validate MPA Header. 2250 */ 2251 if (mpa->revision > mpa_rev) { 2252 log(LOG_ERR, "%s: MPA version mismatch. Local = %d," 2253 " Received = %d\n", __func__, mpa_rev, mpa->revision); 2254 goto err_stop_timer; 2255 } 2256 2257 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) 2258 goto err_stop_timer; 2259 2260 /* 2261 * Fail if there's too much private data. 2262 */ 2263 plen = ntohs(mpa->private_data_size); 2264 if (plen > MPA_MAX_PRIVATE_DATA) 2265 goto err_stop_timer; 2266 2267 /* 2268 * If plen does not account for pkt size 2269 */ 2270 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) 2271 goto err_stop_timer; 2272 2273 ep->plen = (u8) plen; 2274 2275 /* 2276 * If we don't have all the pdata yet, then bail. 2277 */ 2278 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 2279 return 0; 2280 2281 /* 2282 * If we get here we have accumulated the entire mpa 2283 * start reply message including private data. 2284 */ 2285 ep->mpa_attr.initiator = 0; 2286 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2287 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2288 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2289 ep->mpa_attr.version = mpa->revision; 2290 if (mpa->revision == 1) 2291 ep->tried_with_mpa_v1 = 1; 2292 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2293 2294 if (mpa->revision == 2) { 2295 ep->mpa_attr.enhanced_rdma_conn = 2296 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2297 if (ep->mpa_attr.enhanced_rdma_conn) { 2298 mpa_v2_params = (struct mpa_v2_conn_params *) 2299 (ep->mpa_pkt + sizeof(*mpa)); 2300 ep->ird = ntohs(mpa_v2_params->ird) & 2301 MPA_V2_IRD_ORD_MASK; 2302 ep->ird = min_t(u32, ep->ird, 2303 cur_max_read_depth(ep->com.dev)); 2304 ep->ord = ntohs(mpa_v2_params->ord) & 2305 MPA_V2_IRD_ORD_MASK; 2306 ep->ord = min_t(u32, ep->ord, 2307 cur_max_read_depth(ep->com.dev)); 2308 CTR3(KTR_IW_CXGBE, "%s initiator ird %u ord %u", 2309 __func__, ep->ird, ep->ord); 2310 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) 2311 if (peer2peer) { 2312 if (ntohs(mpa_v2_params->ord) & 2313 MPA_V2_RDMA_WRITE_RTR) 2314 ep->mpa_attr.p2p_type = 2315 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2316 else if (ntohs(mpa_v2_params->ord) & 2317 MPA_V2_RDMA_READ_RTR) 2318 ep->mpa_attr.p2p_type = 2319 FW_RI_INIT_P2PTYPE_READ_REQ; 2320 } 2321 } 2322 } else if (mpa->revision == 1 && peer2peer) 2323 ep->mpa_attr.p2p_type = p2p_type; 2324 2325 if (set_tcpinfo(ep)) 2326 goto err_stop_timer; 2327 2328 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, " 2329 "xmit_marker_enabled = %d, version = %d", __func__, 2330 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2331 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); 2332 2333 ep->com.state = MPA_REQ_RCVD; 2334 STOP_EP_TIMER(ep); 2335 2336 /* drive upcall */ 2337 if (ep->parent_ep->com.state != DEAD) 2338 if (connect_request_upcall(ep)) 2339 goto err_out; 2340 return 0; 2341 2342 err_stop_timer: 2343 STOP_EP_TIMER(ep); 2344 err_out: 2345 return 2; 2346 } 2347 2348 /* 2349 * Upcall from the adapter indicating data has been transmitted. 2350 * For us its just the single MPA request or reply. We can now free 2351 * the skb holding the mpa message. 2352 */ 2353 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 2354 { 2355 int err; 2356 struct c4iw_ep *ep = to_ep(cm_id); 2357 int abort = 0; 2358 2359 mutex_lock(&ep->com.mutex); 2360 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep); 2361 2362 if ((ep->com.state == DEAD) || 2363 (ep->com.state != MPA_REQ_RCVD)) { 2364 2365 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep); 2366 mutex_unlock(&ep->com.mutex); 2367 c4iw_put_ep(&ep->com); 2368 return -ECONNRESET; 2369 } 2370 set_bit(ULP_REJECT, &ep->com.history); 2371 2372 if (mpa_rev == 0) { 2373 2374 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep); 2375 abort = 1; 2376 } 2377 else { 2378 2379 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep); 2380 abort = send_mpa_reject(ep, pdata, pdata_len); 2381 } 2382 STOP_EP_TIMER(ep); 2383 err = c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2384 mutex_unlock(&ep->com.mutex); 2385 c4iw_put_ep(&ep->com); 2386 CTR3(KTR_IW_CXGBE, "%s:crc4 %p, err: %d", __func__, ep, err); 2387 return 0; 2388 } 2389 2390 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2391 { 2392 int err; 2393 struct c4iw_qp_attributes attrs = {0}; 2394 enum c4iw_qp_attr_mask mask; 2395 struct c4iw_ep *ep = to_ep(cm_id); 2396 struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 2397 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 2398 int abort = 0; 2399 2400 mutex_lock(&ep->com.mutex); 2401 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep); 2402 2403 if ((ep->com.state == DEAD) || 2404 (ep->com.state != MPA_REQ_RCVD)) { 2405 2406 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep); 2407 err = -ECONNRESET; 2408 goto err_out; 2409 } 2410 2411 BUG_ON(!qp); 2412 2413 set_bit(ULP_ACCEPT, &ep->com.history); 2414 2415 if ((conn_param->ord > c4iw_max_read_depth) || 2416 (conn_param->ird > c4iw_max_read_depth)) { 2417 2418 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep); 2419 err = -EINVAL; 2420 goto err_abort; 2421 } 2422 2423 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 2424 2425 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep); 2426 2427 if (conn_param->ord > ep->ird) { 2428 if (RELAXED_IRD_NEGOTIATION) { 2429 conn_param->ord = ep->ird; 2430 } else { 2431 ep->ird = conn_param->ird; 2432 ep->ord = conn_param->ord; 2433 send_mpa_reject(ep, conn_param->private_data, 2434 conn_param->private_data_len); 2435 err = -ENOMEM; 2436 goto err_abort; 2437 } 2438 } 2439 if (conn_param->ird < ep->ord) { 2440 if (RELAXED_IRD_NEGOTIATION && 2441 ep->ord <= h->rdev.adap->params.max_ordird_qp) { 2442 conn_param->ird = ep->ord; 2443 } else { 2444 err = -ENOMEM; 2445 goto err_abort; 2446 } 2447 } 2448 } 2449 ep->ird = conn_param->ird; 2450 ep->ord = conn_param->ord; 2451 2452 if (ep->mpa_attr.version == 1) { 2453 if (peer2peer && ep->ird == 0) 2454 ep->ird = 1; 2455 } else { 2456 if (peer2peer && 2457 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) && 2458 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0) 2459 ep->ird = 1; 2460 } 2461 2462 CTR4(KTR_IW_CXGBE, "%s %d ird %d ord %d", __func__, __LINE__, 2463 ep->ird, ep->ord); 2464 2465 ep->com.cm_id = cm_id; 2466 ref_cm_id(&ep->com); 2467 ep->com.qp = qp; 2468 ref_qp(ep); 2469 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2470 2471 /* bind QP to EP and move to RTS */ 2472 attrs.mpa_attr = ep->mpa_attr; 2473 attrs.max_ird = ep->ird; 2474 attrs.max_ord = ep->ord; 2475 attrs.llp_stream_handle = ep; 2476 attrs.next_state = C4IW_QP_STATE_RTS; 2477 2478 /* bind QP and TID with INIT_WR */ 2479 mask = C4IW_QP_ATTR_NEXT_STATE | 2480 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 2481 C4IW_QP_ATTR_MPA_ATTR | 2482 C4IW_QP_ATTR_MAX_IRD | 2483 C4IW_QP_ATTR_MAX_ORD; 2484 2485 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2486 if (err) { 2487 CTR3(KTR_IW_CXGBE, "%s:caca %p, err: %d", __func__, ep, err); 2488 goto err_defef_cm_id; 2489 } 2490 2491 err = send_mpa_reply(ep, conn_param->private_data, 2492 conn_param->private_data_len); 2493 if (err) { 2494 CTR3(KTR_IW_CXGBE, "%s:cacb %p, err: %d", __func__, ep, err); 2495 goto err_defef_cm_id; 2496 } 2497 2498 ep->com.state = FPDU_MODE; 2499 established_upcall(ep); 2500 mutex_unlock(&ep->com.mutex); 2501 c4iw_put_ep(&ep->com); 2502 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep); 2503 return 0; 2504 err_defef_cm_id: 2505 deref_cm_id(&ep->com); 2506 err_abort: 2507 abort = 1; 2508 err_out: 2509 if (abort) 2510 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 2511 mutex_unlock(&ep->com.mutex); 2512 c4iw_put_ep(&ep->com); 2513 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep); 2514 return err; 2515 } 2516 2517 static int 2518 c4iw_sock_create(struct sockaddr_storage *laddr, struct socket **so) 2519 { 2520 int ret; 2521 int size, on; 2522 struct socket *sock = NULL; 2523 struct sockopt sopt; 2524 2525 ret = sock_create_kern(laddr->ss_family, 2526 SOCK_STREAM, IPPROTO_TCP, &sock); 2527 if (ret) { 2528 CTR2(KTR_IW_CXGBE, "%s:Failed to create TCP socket. err %d", 2529 __func__, ret); 2530 return ret; 2531 } 2532 2533 if (reuseaddr) { 2534 bzero(&sopt, sizeof(struct sockopt)); 2535 sopt.sopt_dir = SOPT_SET; 2536 sopt.sopt_level = SOL_SOCKET; 2537 sopt.sopt_name = SO_REUSEADDR; 2538 on = 1; 2539 sopt.sopt_val = &on; 2540 sopt.sopt_valsize = sizeof(on); 2541 ret = -sosetopt(sock, &sopt); 2542 if (ret != 0) { 2543 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEADDR) " 2544 "failed with %d.\n", __func__, sock, ret); 2545 } 2546 bzero(&sopt, sizeof(struct sockopt)); 2547 sopt.sopt_dir = SOPT_SET; 2548 sopt.sopt_level = SOL_SOCKET; 2549 sopt.sopt_name = SO_REUSEPORT; 2550 on = 1; 2551 sopt.sopt_val = &on; 2552 sopt.sopt_valsize = sizeof(on); 2553 ret = -sosetopt(sock, &sopt); 2554 if (ret != 0) { 2555 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEPORT) " 2556 "failed with %d.\n", __func__, sock, ret); 2557 } 2558 } 2559 2560 ret = -sobind(sock, (struct sockaddr *)laddr, curthread); 2561 if (ret) { 2562 CTR2(KTR_IW_CXGBE, "%s:Failed to bind socket. err %p", 2563 __func__, ret); 2564 sock_release(sock); 2565 return ret; 2566 } 2567 2568 size = laddr->ss_family == AF_INET6 ? 2569 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 2570 ret = sock_getname(sock, (struct sockaddr *)laddr, &size, 0); 2571 if (ret) { 2572 CTR2(KTR_IW_CXGBE, "%s:sock_getname failed. err %p", 2573 __func__, ret); 2574 sock_release(sock); 2575 return ret; 2576 } 2577 2578 *so = sock; 2579 return 0; 2580 } 2581 2582 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2583 { 2584 int err = 0; 2585 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2586 struct c4iw_ep *ep = NULL; 2587 struct ifnet *nh_ifp; /* Logical egress interface */ 2588 struct epoch_tracker et; 2589 #ifdef VIMAGE 2590 struct rdma_cm_id *rdma_id = (struct rdma_cm_id*)cm_id->context; 2591 struct vnet *vnet = rdma_id->route.addr.dev_addr.net; 2592 #endif 2593 2594 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id); 2595 2596 2597 if ((conn_param->ord > c4iw_max_read_depth) || 2598 (conn_param->ird > c4iw_max_read_depth)) { 2599 2600 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id); 2601 err = -EINVAL; 2602 goto out; 2603 } 2604 ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2605 cm_id->provider_data = ep; 2606 2607 init_timer(&ep->timer); 2608 ep->plen = conn_param->private_data_len; 2609 2610 if (ep->plen) { 2611 2612 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep); 2613 memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 2614 conn_param->private_data, ep->plen); 2615 } 2616 ep->ird = conn_param->ird; 2617 ep->ord = conn_param->ord; 2618 2619 if (peer2peer && ep->ord == 0) { 2620 2621 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep); 2622 ep->ord = 1; 2623 } 2624 2625 ep->com.dev = dev; 2626 ep->com.cm_id = cm_id; 2627 ref_cm_id(&ep->com); 2628 ep->com.qp = get_qhp(dev, conn_param->qpn); 2629 2630 if (!ep->com.qp) { 2631 2632 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep); 2633 err = -EINVAL; 2634 goto fail; 2635 } 2636 ref_qp(ep); 2637 ep->com.thread = curthread; 2638 2639 NET_EPOCH_ENTER(et); 2640 CURVNET_SET(vnet); 2641 err = get_ifnet_from_raddr(&cm_id->remote_addr, &nh_ifp); 2642 CURVNET_RESTORE(); 2643 NET_EPOCH_EXIT(et); 2644 2645 if (err) { 2646 2647 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep); 2648 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 2649 err = EHOSTUNREACH; 2650 return err; 2651 } 2652 2653 if (!(nh_ifp->if_capenable & IFCAP_TOE) || 2654 TOEDEV(nh_ifp) == NULL) { 2655 err = -ENOPROTOOPT; 2656 goto fail; 2657 } 2658 ep->com.state = CONNECTING; 2659 ep->tos = 0; 2660 ep->com.local_addr = cm_id->local_addr; 2661 ep->com.remote_addr = cm_id->remote_addr; 2662 2663 err = c4iw_sock_create(&cm_id->local_addr, &ep->com.so); 2664 if (err) 2665 goto fail; 2666 2667 setiwsockopt(ep->com.so); 2668 init_iwarp_socket(ep->com.so, &ep->com); 2669 err = -soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr, 2670 ep->com.thread); 2671 if (err) 2672 goto fail_free_so; 2673 CTR2(KTR_IW_CXGBE, "%s:ccE, ep %p", __func__, ep); 2674 return 0; 2675 2676 fail_free_so: 2677 uninit_iwarp_socket(ep->com.so); 2678 ep->com.state = DEAD; 2679 sock_release(ep->com.so); 2680 fail: 2681 deref_cm_id(&ep->com); 2682 c4iw_put_ep(&ep->com); 2683 ep = NULL; 2684 out: 2685 CTR2(KTR_IW_CXGBE, "%s:ccE Error %d", __func__, err); 2686 return err; 2687 } 2688 2689 /* 2690 * iwcm->create_listen. Returns -errno on failure. 2691 */ 2692 int 2693 c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 2694 { 2695 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2696 struct c4iw_listen_ep *lep = NULL; 2697 struct listen_port_info *port_info = NULL; 2698 int rc = 0; 2699 2700 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, backlog %s", __func__, cm_id, 2701 backlog); 2702 if (c4iw_fatal_error(&dev->rdev)) { 2703 CTR2(KTR_IW_CXGBE, "%s: cm_id %p, fatal error", __func__, 2704 cm_id); 2705 return -EIO; 2706 } 2707 lep = alloc_ep(sizeof(*lep), GFP_KERNEL); 2708 lep->com.cm_id = cm_id; 2709 ref_cm_id(&lep->com); 2710 lep->com.dev = dev; 2711 lep->backlog = backlog; 2712 lep->com.local_addr = cm_id->local_addr; 2713 lep->com.thread = curthread; 2714 cm_id->provider_data = lep; 2715 lep->com.state = LISTEN; 2716 2717 /* In case of INDADDR_ANY, ibcore creates cmid for each device and 2718 * invokes iw_cxgbe listener callbacks assuming that iw_cxgbe creates 2719 * HW listeners for each device seperately. But toecore expects single 2720 * solisten() call with INADDR_ANY address to create HW listeners on 2721 * all devices for a given port number. So iw_cxgbe driver calls 2722 * solisten() only once for INADDR_ANY(usually done at first time 2723 * listener callback from ibcore). And all the subsequent INADDR_ANY 2724 * listener callbacks from ibcore(for the same port address) do not 2725 * invoke solisten() as first listener callback has already created 2726 * listeners for all other devices(via solisten). 2727 */ 2728 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr)) { 2729 port_info = add_ep_to_listenlist(lep); 2730 /* skip solisten() if refcnt > 1, as the listeners were 2731 * alredy created by 'Master lep' 2732 */ 2733 if (port_info->refcnt > 1) { 2734 /* As there will be only one listener socket for a TCP 2735 * port, copy Master lep's socket pointer to other lep's 2736 * that are belonging to same TCP port. 2737 */ 2738 struct c4iw_listen_ep *head_lep = 2739 container_of(port_info->lep_list.next, 2740 struct c4iw_listen_ep, listen_ep_list); 2741 lep->com.so = head_lep->com.so; 2742 goto out; 2743 } 2744 } 2745 rc = c4iw_sock_create(&cm_id->local_addr, &lep->com.so); 2746 if (rc) { 2747 CTR2(KTR_IW_CXGBE, "%s:Failed to create socket. err %d", 2748 __func__, rc); 2749 goto fail; 2750 } 2751 2752 rc = -solisten(lep->com.so, backlog, curthread); 2753 if (rc) { 2754 CTR3(KTR_IW_CXGBE, "%s:Failed to listen on sock:%p. err %d", 2755 __func__, lep->com.so, rc); 2756 goto fail_free_so; 2757 } 2758 init_iwarp_socket(lep->com.so, &lep->com); 2759 out: 2760 return 0; 2761 2762 fail_free_so: 2763 sock_release(lep->com.so); 2764 fail: 2765 if (port_info) 2766 rem_ep_from_listenlist(lep); 2767 deref_cm_id(&lep->com); 2768 c4iw_put_ep(&lep->com); 2769 return rc; 2770 } 2771 2772 int 2773 c4iw_destroy_listen(struct iw_cm_id *cm_id) 2774 { 2775 struct c4iw_listen_ep *lep = to_listen_ep(cm_id); 2776 2777 mutex_lock(&lep->com.mutex); 2778 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, state %s", __func__, cm_id, 2779 states[lep->com.state]); 2780 2781 lep->com.state = DEAD; 2782 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr)) { 2783 /* if no refcount then close listen socket */ 2784 if (!rem_ep_from_listenlist(lep)) 2785 close_socket(lep->com.so); 2786 } else 2787 close_socket(lep->com.so); 2788 deref_cm_id(&lep->com); 2789 mutex_unlock(&lep->com.mutex); 2790 c4iw_put_ep(&lep->com); 2791 return 0; 2792 } 2793 2794 int __c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2795 { 2796 int ret; 2797 mutex_lock(&ep->com.mutex); 2798 ret = c4iw_ep_disconnect(ep, abrupt, gfp); 2799 mutex_unlock(&ep->com.mutex); 2800 return ret; 2801 } 2802 2803 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2804 { 2805 int ret = 0; 2806 int close = 0; 2807 struct c4iw_rdev *rdev; 2808 2809 2810 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep); 2811 2812 rdev = &ep->com.dev->rdev; 2813 2814 if (c4iw_fatal_error(rdev)) { 2815 CTR3(KTR_IW_CXGBE, "%s:ced1 fatal error %p %s", __func__, ep, 2816 states[ep->com.state]); 2817 if (ep->com.state != DEAD) { 2818 send_abort(ep); 2819 ep->com.state = DEAD; 2820 } 2821 close_complete_upcall(ep, -ECONNRESET); 2822 return ECONNRESET; 2823 } 2824 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep, 2825 states[ep->com.state]); 2826 2827 /* 2828 * Ref the ep here in case we have fatal errors causing the 2829 * ep to be released and freed. 2830 */ 2831 c4iw_get_ep(&ep->com); 2832 switch (ep->com.state) { 2833 2834 case MPA_REQ_WAIT: 2835 case MPA_REQ_SENT: 2836 case MPA_REQ_RCVD: 2837 case MPA_REP_SENT: 2838 case FPDU_MODE: 2839 close = 1; 2840 if (abrupt) 2841 ep->com.state = ABORTING; 2842 else { 2843 ep->com.state = CLOSING; 2844 START_EP_TIMER(ep); 2845 } 2846 set_bit(CLOSE_SENT, &ep->com.flags); 2847 break; 2848 2849 case CLOSING: 2850 2851 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2852 2853 close = 1; 2854 if (abrupt) { 2855 STOP_EP_TIMER(ep); 2856 ep->com.state = ABORTING; 2857 } else 2858 ep->com.state = MORIBUND; 2859 } 2860 break; 2861 2862 case MORIBUND: 2863 case ABORTING: 2864 case DEAD: 2865 CTR3(KTR_IW_CXGBE, 2866 "%s ignoring disconnect ep %p state %u", __func__, 2867 ep, ep->com.state); 2868 break; 2869 2870 default: 2871 BUG(); 2872 break; 2873 } 2874 2875 2876 if (close) { 2877 2878 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep); 2879 2880 if (abrupt) { 2881 2882 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep); 2883 set_bit(EP_DISC_ABORT, &ep->com.history); 2884 close_complete_upcall(ep, -ECONNRESET); 2885 send_abort(ep); 2886 } else { 2887 2888 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep); 2889 set_bit(EP_DISC_CLOSE, &ep->com.history); 2890 2891 if (!ep->parent_ep) 2892 ep->com.state = MORIBUND; 2893 2894 CURVNET_SET(ep->com.so->so_vnet); 2895 ret = sodisconnect(ep->com.so); 2896 CURVNET_RESTORE(); 2897 if (ret) { 2898 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep); 2899 STOP_EP_TIMER(ep); 2900 send_abort(ep); 2901 ep->com.state = DEAD; 2902 close_complete_upcall(ep, -ECONNRESET); 2903 set_bit(EP_DISC_FAIL, &ep->com.history); 2904 if (ep->com.qp) { 2905 struct c4iw_qp_attributes attrs = {0}; 2906 2907 attrs.next_state = C4IW_QP_STATE_ERROR; 2908 ret = c4iw_modify_qp( 2909 ep->com.dev, ep->com.qp, 2910 C4IW_QP_ATTR_NEXT_STATE, 2911 &attrs, 1); 2912 CTR3(KTR_IW_CXGBE, "%s:ced7 %p ret %d", 2913 __func__, ep, ret); 2914 } 2915 } 2916 } 2917 } 2918 c4iw_put_ep(&ep->com); 2919 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep); 2920 return ret; 2921 } 2922 2923 #ifdef C4IW_EP_REDIRECT 2924 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, 2925 struct l2t_entry *l2t) 2926 { 2927 struct c4iw_ep *ep = ctx; 2928 2929 if (ep->dst != old) 2930 return 0; 2931 2932 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, 2933 l2t); 2934 dst_hold(new); 2935 cxgb4_l2t_release(ep->l2t); 2936 ep->l2t = l2t; 2937 dst_release(old); 2938 ep->dst = new; 2939 return 1; 2940 } 2941 #endif 2942 2943 2944 2945 static void ep_timeout(unsigned long arg) 2946 { 2947 struct c4iw_ep *ep = (struct c4iw_ep *)arg; 2948 2949 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 2950 2951 /* 2952 * Only insert if it is not already on the list. 2953 */ 2954 if (!(ep->com.ep_events & C4IW_EVENT_TIMEOUT)) { 2955 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep); 2956 add_ep_to_req_list(ep, C4IW_EVENT_TIMEOUT); 2957 } 2958 } 2959 } 2960 2961 static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl) 2962 { 2963 uint64_t val = be64toh(*rpl); 2964 int ret; 2965 struct c4iw_wr_wait *wr_waitp; 2966 2967 ret = (int)((val >> 8) & 0xff); 2968 wr_waitp = (struct c4iw_wr_wait *)rpl[1]; 2969 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret); 2970 if (wr_waitp) 2971 c4iw_wake_up(wr_waitp, ret ? -ret : 0); 2972 2973 return (0); 2974 } 2975 2976 static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl) 2977 { 2978 struct cqe_list_entry *cle; 2979 unsigned long flag; 2980 2981 cle = malloc(sizeof(*cle), M_CXGBE, M_NOWAIT); 2982 cle->rhp = sc->iwarp_softc; 2983 cle->err_cqe = *(const struct t4_cqe *)(&rpl[0]); 2984 2985 spin_lock_irqsave(&err_cqe_lock, flag); 2986 list_add_tail(&cle->entry, &err_cqe_list); 2987 queue_work(c4iw_taskq, &c4iw_task); 2988 spin_unlock_irqrestore(&err_cqe_lock, flag); 2989 2990 return (0); 2991 } 2992 2993 static int 2994 process_terminate(struct c4iw_ep *ep) 2995 { 2996 struct c4iw_qp_attributes attrs = {0}; 2997 2998 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep); 2999 3000 if (ep && ep->com.qp) { 3001 3002 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", 3003 ep->hwtid, ep->com.qp->wq.sq.qid); 3004 attrs.next_state = C4IW_QP_STATE_TERMINATE; 3005 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 3006 1); 3007 } else 3008 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", 3009 ep->hwtid); 3010 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep); 3011 3012 return 0; 3013 } 3014 3015 int __init c4iw_cm_init(void) 3016 { 3017 3018 t4_register_cpl_handler(CPL_RDMA_TERMINATE, terminate); 3019 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, fw6_wr_rpl); 3020 t4_register_fw_msg_handler(FW6_TYPE_CQE, fw6_cqe_handler); 3021 t4_register_an_handler(c4iw_ev_handler); 3022 3023 TAILQ_INIT(&req_list); 3024 spin_lock_init(&req_lock); 3025 INIT_LIST_HEAD(&err_cqe_list); 3026 spin_lock_init(&err_cqe_lock); 3027 3028 INIT_WORK(&c4iw_task, process_req); 3029 3030 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe"); 3031 if (!c4iw_taskq) 3032 return -ENOMEM; 3033 3034 return 0; 3035 } 3036 3037 void __exit c4iw_cm_term(void) 3038 { 3039 WARN_ON(!TAILQ_EMPTY(&req_list)); 3040 WARN_ON(!list_empty(&err_cqe_list)); 3041 flush_workqueue(c4iw_taskq); 3042 destroy_workqueue(c4iw_taskq); 3043 3044 t4_register_cpl_handler(CPL_RDMA_TERMINATE, NULL); 3045 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, NULL); 3046 t4_register_fw_msg_handler(FW6_TYPE_CQE, NULL); 3047 t4_register_an_handler(NULL); 3048 } 3049 #endif 3050