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/notifier.h> 77 #include <linux/inetdevice.h> 78 #include <linux/if_vlan.h> 79 #include <net/netevent.h> 80 #include <rdma/rdma_cm.h> 81 82 static spinlock_t req_lock; 83 static TAILQ_HEAD(c4iw_ep_list, c4iw_ep_common) req_list; 84 static struct work_struct c4iw_task; 85 static struct workqueue_struct *c4iw_taskq; 86 static LIST_HEAD(err_cqe_list); 87 static spinlock_t err_cqe_lock; 88 static LIST_HEAD(listen_port_list); 89 static DEFINE_MUTEX(listen_port_mutex); 90 91 static void process_req(struct work_struct *ctx); 92 static void start_ep_timer(struct c4iw_ep *ep); 93 static int stop_ep_timer(struct c4iw_ep *ep); 94 static int set_tcpinfo(struct c4iw_ep *ep); 95 static void process_timeout(struct c4iw_ep *ep); 96 static void process_err_cqes(void); 97 static void *alloc_ep(int size, gfp_t flags); 98 static void close_socket(struct socket *so); 99 static int send_mpa_req(struct c4iw_ep *ep); 100 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen); 101 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen); 102 static void close_complete_upcall(struct c4iw_ep *ep, int status); 103 static int send_abort(struct c4iw_ep *ep); 104 static void peer_close_upcall(struct c4iw_ep *ep); 105 static void peer_abort_upcall(struct c4iw_ep *ep); 106 static void connect_reply_upcall(struct c4iw_ep *ep, int status); 107 static int connect_request_upcall(struct c4iw_ep *ep); 108 static void established_upcall(struct c4iw_ep *ep); 109 static int process_mpa_reply(struct c4iw_ep *ep); 110 static int process_mpa_request(struct c4iw_ep *ep); 111 static void process_peer_close(struct c4iw_ep *ep); 112 static void process_conn_error(struct c4iw_ep *ep); 113 static void process_close_complete(struct c4iw_ep *ep); 114 static void ep_timeout(unsigned long arg); 115 static void setiwsockopt(struct socket *so); 116 static void init_iwarp_socket(struct socket *so, void *arg); 117 static void uninit_iwarp_socket(struct socket *so); 118 static void process_data(struct c4iw_ep *ep); 119 static void process_connected(struct c4iw_ep *ep); 120 static int c4iw_so_upcall(struct socket *so, void *arg, int waitflag); 121 static void process_socket_event(struct c4iw_ep *ep); 122 static void release_ep_resources(struct c4iw_ep *ep); 123 static int process_terminate(struct c4iw_ep *ep); 124 static int terminate(struct sge_iq *iq, const struct rss_header *rss, 125 struct mbuf *m); 126 static int add_ep_to_req_list(struct c4iw_ep *ep, int ep_events); 127 static struct listen_port_info * 128 add_ep_to_listenlist(struct c4iw_listen_ep *lep); 129 static int rem_ep_from_listenlist(struct c4iw_listen_ep *lep); 130 static struct c4iw_listen_ep * 131 find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so); 132 static int get_ifnet_from_raddr(struct sockaddr_storage *raddr, 133 struct ifnet **ifp); 134 static void process_newconn(struct c4iw_listen_ep *master_lep, 135 struct socket *new_so); 136 #define START_EP_TIMER(ep) \ 137 do { \ 138 CTR3(KTR_IW_CXGBE, "start_ep_timer (%s:%d) ep %p", \ 139 __func__, __LINE__, (ep)); \ 140 start_ep_timer(ep); \ 141 } while (0) 142 143 #define STOP_EP_TIMER(ep) \ 144 ({ \ 145 CTR3(KTR_IW_CXGBE, "stop_ep_timer (%s:%d) ep %p", \ 146 __func__, __LINE__, (ep)); \ 147 stop_ep_timer(ep); \ 148 }) 149 150 #define GET_LOCAL_ADDR(pladdr, so) \ 151 do { \ 152 struct sockaddr_storage *__a = NULL; \ 153 struct inpcb *__inp = sotoinpcb(so); \ 154 KASSERT(__inp != NULL, \ 155 ("GET_LOCAL_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 156 if (__inp->inp_vflag & INP_IPV4) \ 157 in_getsockaddr(so, (struct sockaddr **)&__a); \ 158 else \ 159 in6_getsockaddr(so, (struct sockaddr **)&__a); \ 160 *(pladdr) = *__a; \ 161 free(__a, M_SONAME); \ 162 } while (0) 163 164 #define GET_REMOTE_ADDR(praddr, so) \ 165 do { \ 166 struct sockaddr_storage *__a = NULL; \ 167 struct inpcb *__inp = sotoinpcb(so); \ 168 KASSERT(__inp != NULL, \ 169 ("GET_REMOTE_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 170 if (__inp->inp_vflag & INP_IPV4) \ 171 in_getpeeraddr(so, (struct sockaddr **)&__a); \ 172 else \ 173 in6_getpeeraddr(so, (struct sockaddr **)&__a); \ 174 *(praddr) = *__a; \ 175 free(__a, M_SONAME); \ 176 } while (0) 177 178 static char *states[] = { 179 "idle", 180 "listen", 181 "connecting", 182 "mpa_wait_req", 183 "mpa_req_sent", 184 "mpa_req_rcvd", 185 "mpa_rep_sent", 186 "fpdu_mode", 187 "aborting", 188 "closing", 189 "moribund", 190 "dead", 191 NULL, 192 }; 193 194 static void deref_cm_id(struct c4iw_ep_common *epc) 195 { 196 epc->cm_id->rem_ref(epc->cm_id); 197 epc->cm_id = NULL; 198 set_bit(CM_ID_DEREFED, &epc->history); 199 } 200 201 static void ref_cm_id(struct c4iw_ep_common *epc) 202 { 203 set_bit(CM_ID_REFED, &epc->history); 204 epc->cm_id->add_ref(epc->cm_id); 205 } 206 207 static void deref_qp(struct c4iw_ep *ep) 208 { 209 c4iw_qp_rem_ref(&ep->com.qp->ibqp); 210 clear_bit(QP_REFERENCED, &ep->com.flags); 211 set_bit(QP_DEREFED, &ep->com.history); 212 } 213 214 static void ref_qp(struct c4iw_ep *ep) 215 { 216 set_bit(QP_REFERENCED, &ep->com.flags); 217 set_bit(QP_REFED, &ep->com.history); 218 c4iw_qp_add_ref(&ep->com.qp->ibqp); 219 } 220 /* allocated per TCP port while listening */ 221 struct listen_port_info { 222 uint16_t port_num; /* TCP port address */ 223 struct list_head list; /* belongs to listen_port_list */ 224 struct list_head lep_list; /* per port lep list */ 225 uint32_t refcnt; /* number of lep's listening */ 226 }; 227 228 /* 229 * Following two lists are used to manage INADDR_ANY listeners: 230 * 1)listen_port_list 231 * 2)lep_list 232 * 233 * Below is the INADDR_ANY listener lists overview on a system with a two port 234 * adapter: 235 * |------------------| 236 * |listen_port_list | 237 * |------------------| 238 * | 239 * | |-----------| |-----------| 240 * | | port_num:X| | port_num:X| 241 * |--------------|-list------|-------|-list------|-------.... 242 * | lep_list----| | lep_list----| 243 * | refcnt | | | refcnt | | 244 * | | | | | | 245 * | | | | | | 246 * |-----------| | |-----------| | 247 * | | 248 * | | 249 * | | 250 * | | lep1 lep2 251 * | | |----------------| |----------------| 252 * | |----| listen_ep_list |----| listen_ep_list | 253 * | |----------------| |----------------| 254 * | 255 * | 256 * | lep1 lep2 257 * | |----------------| |----------------| 258 * |---| listen_ep_list |----| listen_ep_list | 259 * |----------------| |----------------| 260 * 261 * Because of two port adapter, the number of lep's are two(lep1 & lep2) for 262 * each TCP port number. 263 * 264 * Here 'lep1' is always marked as Master lep, because solisten() is always 265 * called through first lep. 266 * 267 */ 268 static struct listen_port_info * 269 add_ep_to_listenlist(struct c4iw_listen_ep *lep) 270 { 271 uint16_t port; 272 struct listen_port_info *port_info = NULL; 273 struct sockaddr_storage *laddr = &lep->com.local_addr; 274 275 port = (laddr->ss_family == AF_INET) ? 276 ((struct sockaddr_in *)laddr)->sin_port : 277 ((struct sockaddr_in6 *)laddr)->sin6_port; 278 279 mutex_lock(&listen_port_mutex); 280 281 list_for_each_entry(port_info, &listen_port_list, list) 282 if (port_info->port_num == port) 283 goto found_port; 284 285 port_info = malloc(sizeof(*port_info), M_CXGBE, M_WAITOK); 286 port_info->port_num = port; 287 port_info->refcnt = 0; 288 289 list_add_tail(&port_info->list, &listen_port_list); 290 INIT_LIST_HEAD(&port_info->lep_list); 291 292 found_port: 293 port_info->refcnt++; 294 list_add_tail(&lep->listen_ep_list, &port_info->lep_list); 295 mutex_unlock(&listen_port_mutex); 296 return port_info; 297 } 298 299 static int 300 rem_ep_from_listenlist(struct c4iw_listen_ep *lep) 301 { 302 uint16_t port; 303 struct listen_port_info *port_info = NULL; 304 struct sockaddr_storage *laddr = &lep->com.local_addr; 305 int refcnt = 0; 306 307 port = (laddr->ss_family == AF_INET) ? 308 ((struct sockaddr_in *)laddr)->sin_port : 309 ((struct sockaddr_in6 *)laddr)->sin6_port; 310 311 mutex_lock(&listen_port_mutex); 312 313 /* get the port_info structure based on the lep's port address */ 314 list_for_each_entry(port_info, &listen_port_list, list) { 315 if (port_info->port_num == port) { 316 port_info->refcnt--; 317 refcnt = port_info->refcnt; 318 /* remove the current lep from the listen list */ 319 list_del(&lep->listen_ep_list); 320 if (port_info->refcnt == 0) { 321 /* Remove this entry from the list as there 322 * are no more listeners for this port_num. 323 */ 324 list_del(&port_info->list); 325 kfree(port_info); 326 } 327 break; 328 } 329 } 330 mutex_unlock(&listen_port_mutex); 331 return refcnt; 332 } 333 334 /* 335 * Find the lep that belongs to the ifnet on which the SYN frame was received. 336 */ 337 struct c4iw_listen_ep * 338 find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so) 339 { 340 struct adapter *adap = NULL; 341 struct c4iw_listen_ep *lep = NULL; 342 struct ifnet *ifp = NULL, *hw_ifp = NULL; 343 struct listen_port_info *port_info = NULL; 344 int i = 0, found_portinfo = 0, found_lep = 0; 345 uint16_t port; 346 347 /* 348 * STEP 1: Figure out 'ifp' of the physical interface, not pseudo 349 * interfaces like vlan, lagg, etc.. 350 * TBD: lagg support, lagg + vlan support. 351 */ 352 ifp = TOEPCB(so)->l2te->ifp; 353 if (ifp->if_type == IFT_L2VLAN) { 354 hw_ifp = VLAN_TRUNKDEV(ifp); 355 if (hw_ifp == NULL) { 356 CTR4(KTR_IW_CXGBE, "%s: Failed to get parent ifnet of " 357 "vlan ifnet %p, sock %p, master_lep %p", 358 __func__, ifp, so, master_lep); 359 return (NULL); 360 } 361 } else 362 hw_ifp = ifp; 363 364 /* STEP 2: Find 'port_info' with listener local port address. */ 365 port = (master_lep->com.local_addr.ss_family == AF_INET) ? 366 ((struct sockaddr_in *)&master_lep->com.local_addr)->sin_port : 367 ((struct sockaddr_in6 *)&master_lep->com.local_addr)->sin6_port; 368 369 370 mutex_lock(&listen_port_mutex); 371 list_for_each_entry(port_info, &listen_port_list, list) 372 if (port_info->port_num == port) { 373 found_portinfo =1; 374 break; 375 } 376 if (!found_portinfo) 377 goto out; 378 379 /* STEP 3: Traverse through list of lep's that are bound to the current 380 * TCP port address and find the lep that belongs to the ifnet on which 381 * the SYN frame was received. 382 */ 383 list_for_each_entry(lep, &port_info->lep_list, listen_ep_list) { 384 adap = lep->com.dev->rdev.adap; 385 for_each_port(adap, i) { 386 if (hw_ifp == adap->port[i]->vi[0].ifp) { 387 found_lep =1; 388 goto out; 389 } 390 } 391 } 392 out: 393 mutex_unlock(&listen_port_mutex); 394 return found_lep ? lep : (NULL); 395 } 396 397 static void process_timeout(struct c4iw_ep *ep) 398 { 399 struct c4iw_qp_attributes attrs = {0}; 400 int abort = 1; 401 402 CTR4(KTR_IW_CXGBE, "%s ep :%p, tid:%u, state %d", __func__, 403 ep, ep->hwtid, ep->com.state); 404 set_bit(TIMEDOUT, &ep->com.history); 405 switch (ep->com.state) { 406 case MPA_REQ_SENT: 407 connect_reply_upcall(ep, -ETIMEDOUT); 408 break; 409 case MPA_REQ_WAIT: 410 case MPA_REQ_RCVD: 411 case MPA_REP_SENT: 412 case FPDU_MODE: 413 break; 414 case CLOSING: 415 case MORIBUND: 416 if (ep->com.cm_id && ep->com.qp) { 417 attrs.next_state = C4IW_QP_STATE_ERROR; 418 c4iw_modify_qp(ep->com.dev, ep->com.qp, 419 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 420 } 421 close_complete_upcall(ep, -ETIMEDOUT); 422 break; 423 case ABORTING: 424 case DEAD: 425 /* 426 * These states are expected if the ep timed out at the same 427 * time as another thread was calling stop_ep_timer(). 428 * So we silently do nothing for these states. 429 */ 430 abort = 0; 431 break; 432 default: 433 CTR4(KTR_IW_CXGBE, "%s unexpected state ep %p tid %u state %u" 434 , __func__, ep, ep->hwtid, ep->com.state); 435 abort = 0; 436 } 437 if (abort) 438 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 439 c4iw_put_ep(&ep->com); 440 return; 441 } 442 443 struct cqe_list_entry { 444 struct list_head entry; 445 struct c4iw_dev *rhp; 446 struct t4_cqe err_cqe; 447 }; 448 449 static void 450 process_err_cqes(void) 451 { 452 unsigned long flag; 453 struct cqe_list_entry *cle; 454 455 spin_lock_irqsave(&err_cqe_lock, flag); 456 while (!list_empty(&err_cqe_list)) { 457 struct list_head *tmp; 458 tmp = err_cqe_list.next; 459 list_del(tmp); 460 tmp->next = tmp->prev = NULL; 461 spin_unlock_irqrestore(&err_cqe_lock, flag); 462 cle = list_entry(tmp, struct cqe_list_entry, entry); 463 c4iw_ev_dispatch(cle->rhp, &cle->err_cqe); 464 free(cle, M_CXGBE); 465 spin_lock_irqsave(&err_cqe_lock, flag); 466 } 467 spin_unlock_irqrestore(&err_cqe_lock, flag); 468 469 return; 470 } 471 472 static void 473 process_req(struct work_struct *ctx) 474 { 475 struct c4iw_ep_common *epc; 476 unsigned long flag; 477 int ep_events; 478 479 process_err_cqes(); 480 spin_lock_irqsave(&req_lock, flag); 481 while (!TAILQ_EMPTY(&req_list)) { 482 epc = TAILQ_FIRST(&req_list); 483 TAILQ_REMOVE(&req_list, epc, entry); 484 epc->entry.tqe_prev = NULL; 485 ep_events = epc->ep_events; 486 epc->ep_events = 0; 487 spin_unlock_irqrestore(&req_lock, flag); 488 mutex_lock(&epc->mutex); 489 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, ep_state %s events 0x%x", 490 __func__, epc->so, epc, states[epc->state], ep_events); 491 if (ep_events & C4IW_EVENT_TERM) 492 process_terminate((struct c4iw_ep *)epc); 493 if (ep_events & C4IW_EVENT_TIMEOUT) 494 process_timeout((struct c4iw_ep *)epc); 495 if (ep_events & C4IW_EVENT_SOCKET) 496 process_socket_event((struct c4iw_ep *)epc); 497 mutex_unlock(&epc->mutex); 498 c4iw_put_ep(epc); 499 process_err_cqes(); 500 spin_lock_irqsave(&req_lock, flag); 501 } 502 spin_unlock_irqrestore(&req_lock, flag); 503 } 504 505 /* 506 * XXX: doesn't belong here in the iWARP driver. 507 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is 508 * set. Is this a valid assumption for active open? 509 */ 510 static int 511 set_tcpinfo(struct c4iw_ep *ep) 512 { 513 struct socket *so = ep->com.so; 514 struct inpcb *inp = sotoinpcb(so); 515 struct tcpcb *tp; 516 struct toepcb *toep; 517 int rc = 0; 518 519 INP_WLOCK(inp); 520 tp = intotcpcb(inp); 521 if ((tp->t_flags & TF_TOE) == 0) { 522 rc = EINVAL; 523 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n", 524 __func__, so, ep); 525 goto done; 526 } 527 toep = TOEPCB(so); 528 529 ep->hwtid = toep->tid; 530 ep->snd_seq = tp->snd_nxt; 531 ep->rcv_seq = tp->rcv_nxt; 532 done: 533 INP_WUNLOCK(inp); 534 return (rc); 535 536 } 537 static int 538 get_ifnet_from_raddr(struct sockaddr_storage *raddr, struct ifnet **ifp) 539 { 540 int err = 0; 541 struct nhop_object *nh; 542 543 if (raddr->ss_family == AF_INET) { 544 struct sockaddr_in *raddr4 = (struct sockaddr_in *)raddr; 545 546 nh = fib4_lookup(RT_DEFAULT_FIB, raddr4->sin_addr, 0, 547 NHR_NONE, 0); 548 } else { 549 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)raddr; 550 struct in6_addr addr6; 551 uint32_t scopeid; 552 553 memset(&addr6, 0, sizeof(addr6)); 554 in6_splitscope((struct in6_addr *)&raddr6->sin6_addr, 555 &addr6, &scopeid); 556 nh = fib6_lookup(RT_DEFAULT_FIB, &addr6, scopeid, 557 NHR_NONE, 0); 558 } 559 560 if (nh == NULL) 561 err = EHOSTUNREACH; 562 else 563 *ifp = nh->nh_ifp; 564 CTR2(KTR_IW_CXGBE, "%s: return: %d", __func__, err); 565 return err; 566 } 567 568 static void 569 close_socket(struct socket *so) 570 { 571 uninit_iwarp_socket(so); 572 soclose(so); 573 } 574 575 static void 576 process_peer_close(struct c4iw_ep *ep) 577 { 578 struct c4iw_qp_attributes attrs = {0}; 579 int disconnect = 1; 580 int release = 0; 581 582 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep, 583 ep->com.so, states[ep->com.state]); 584 585 switch (ep->com.state) { 586 587 case MPA_REQ_WAIT: 588 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT DEAD", 589 __func__, ep); 590 /* Fallthrough */ 591 case MPA_REQ_SENT: 592 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT DEAD", 593 __func__, ep); 594 ep->com.state = DEAD; 595 connect_reply_upcall(ep, -ECONNABORTED); 596 597 disconnect = 0; 598 STOP_EP_TIMER(ep); 599 close_socket(ep->com.so); 600 deref_cm_id(&ep->com); 601 release = 1; 602 break; 603 604 case MPA_REQ_RCVD: 605 606 /* 607 * We're gonna mark this puppy DEAD, but keep 608 * the reference on it until the ULP accepts or 609 * rejects the CR. 610 */ 611 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING", 612 __func__, ep); 613 ep->com.state = CLOSING; 614 break; 615 616 case MPA_REP_SENT: 617 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING", 618 __func__, ep); 619 ep->com.state = CLOSING; 620 break; 621 622 case FPDU_MODE: 623 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING", 624 __func__, ep); 625 START_EP_TIMER(ep); 626 ep->com.state = CLOSING; 627 attrs.next_state = C4IW_QP_STATE_CLOSING; 628 c4iw_modify_qp(ep->com.dev, ep->com.qp, 629 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 630 peer_close_upcall(ep); 631 break; 632 633 case ABORTING: 634 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)", 635 __func__, ep); 636 disconnect = 0; 637 break; 638 639 case CLOSING: 640 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND", 641 __func__, ep); 642 ep->com.state = MORIBUND; 643 disconnect = 0; 644 break; 645 646 case MORIBUND: 647 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__, 648 ep); 649 STOP_EP_TIMER(ep); 650 if (ep->com.cm_id && ep->com.qp) { 651 attrs.next_state = C4IW_QP_STATE_IDLE; 652 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 653 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 654 } 655 close_socket(ep->com.so); 656 close_complete_upcall(ep, 0); 657 ep->com.state = DEAD; 658 release = 1; 659 disconnect = 0; 660 break; 661 662 case DEAD: 663 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)", 664 __func__, ep); 665 disconnect = 0; 666 break; 667 668 default: 669 panic("%s: ep %p state %d", __func__, ep, 670 ep->com.state); 671 break; 672 } 673 674 675 if (disconnect) { 676 677 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep); 678 c4iw_ep_disconnect(ep, 0, M_NOWAIT); 679 } 680 if (release) { 681 682 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep); 683 c4iw_put_ep(&ep->com); 684 } 685 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep); 686 return; 687 } 688 689 static void 690 process_conn_error(struct c4iw_ep *ep) 691 { 692 struct c4iw_qp_attributes attrs = {0}; 693 int ret; 694 int state; 695 696 state = ep->com.state; 697 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s", 698 __func__, ep, ep->com.so, ep->com.so->so_error, 699 states[ep->com.state]); 700 701 switch (state) { 702 703 case MPA_REQ_WAIT: 704 STOP_EP_TIMER(ep); 705 c4iw_put_ep(&ep->parent_ep->com); 706 break; 707 708 case MPA_REQ_SENT: 709 STOP_EP_TIMER(ep); 710 connect_reply_upcall(ep, -ECONNRESET); 711 break; 712 713 case MPA_REP_SENT: 714 ep->com.rpl_err = ECONNRESET; 715 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep); 716 break; 717 718 case MPA_REQ_RCVD: 719 break; 720 721 case MORIBUND: 722 case CLOSING: 723 STOP_EP_TIMER(ep); 724 /*FALLTHROUGH*/ 725 case FPDU_MODE: 726 727 if (ep->com.cm_id && ep->com.qp) { 728 729 attrs.next_state = C4IW_QP_STATE_ERROR; 730 ret = c4iw_modify_qp(ep->com.qp->rhp, 731 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 732 &attrs, 1); 733 if (ret) 734 log(LOG_ERR, 735 "%s - qp <- error failed!\n", 736 __func__); 737 } 738 peer_abort_upcall(ep); 739 break; 740 741 case ABORTING: 742 break; 743 744 case DEAD: 745 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!", 746 __func__, ep->com.so->so_error); 747 return; 748 749 default: 750 panic("%s: ep %p state %d", __func__, ep, state); 751 break; 752 } 753 754 if (state != ABORTING) { 755 close_socket(ep->com.so); 756 ep->com.state = DEAD; 757 c4iw_put_ep(&ep->com); 758 } 759 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep); 760 return; 761 } 762 763 static void 764 process_close_complete(struct c4iw_ep *ep) 765 { 766 struct c4iw_qp_attributes attrs = {0}; 767 int release = 0; 768 769 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep, 770 ep->com.so, states[ep->com.state]); 771 772 /* The cm_id may be null if we failed to connect */ 773 set_bit(CLOSE_CON_RPL, &ep->com.history); 774 775 switch (ep->com.state) { 776 777 case CLOSING: 778 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND", 779 __func__, ep); 780 ep->com.state = MORIBUND; 781 break; 782 783 case MORIBUND: 784 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__, 785 ep); 786 STOP_EP_TIMER(ep); 787 788 if ((ep->com.cm_id) && (ep->com.qp)) { 789 790 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE", 791 __func__, ep); 792 attrs.next_state = C4IW_QP_STATE_IDLE; 793 c4iw_modify_qp(ep->com.dev, 794 ep->com.qp, 795 C4IW_QP_ATTR_NEXT_STATE, 796 &attrs, 1); 797 } 798 799 close_socket(ep->com.so); 800 close_complete_upcall(ep, 0); 801 ep->com.state = DEAD; 802 release = 1; 803 break; 804 805 case ABORTING: 806 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep); 807 break; 808 809 case DEAD: 810 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep); 811 break; 812 default: 813 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p unknown ep state", 814 __func__, ep); 815 panic("%s:pcc6 %p unknown ep state", __func__, ep); 816 break; 817 } 818 819 if (release) { 820 821 CTR2(KTR_IW_CXGBE, "%s:pcc8 %p", __func__, ep); 822 release_ep_resources(ep); 823 } 824 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep); 825 return; 826 } 827 828 static void 829 setiwsockopt(struct socket *so) 830 { 831 int rc; 832 struct sockopt sopt; 833 int on = 1; 834 835 sopt.sopt_dir = SOPT_SET; 836 sopt.sopt_level = IPPROTO_TCP; 837 sopt.sopt_name = TCP_NODELAY; 838 sopt.sopt_val = (caddr_t)&on; 839 sopt.sopt_valsize = sizeof on; 840 sopt.sopt_td = NULL; 841 rc = -sosetopt(so, &sopt); 842 if (rc) { 843 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n", 844 __func__, so, rc); 845 } 846 } 847 848 static void 849 init_iwarp_socket(struct socket *so, void *arg) 850 { 851 if (SOLISTENING(so)) { 852 SOLISTEN_LOCK(so); 853 solisten_upcall_set(so, c4iw_so_upcall, arg); 854 so->so_state |= SS_NBIO; 855 SOLISTEN_UNLOCK(so); 856 } else { 857 SOCKBUF_LOCK(&so->so_rcv); 858 soupcall_set(so, SO_RCV, c4iw_so_upcall, arg); 859 so->so_state |= SS_NBIO; 860 SOCKBUF_UNLOCK(&so->so_rcv); 861 } 862 } 863 864 static void 865 uninit_iwarp_socket(struct socket *so) 866 { 867 if (SOLISTENING(so)) { 868 SOLISTEN_LOCK(so); 869 solisten_upcall_set(so, NULL, NULL); 870 SOLISTEN_UNLOCK(so); 871 } else { 872 SOCKBUF_LOCK(&so->so_rcv); 873 soupcall_clear(so, SO_RCV); 874 SOCKBUF_UNLOCK(&so->so_rcv); 875 } 876 } 877 878 static void 879 process_data(struct c4iw_ep *ep) 880 { 881 int ret = 0; 882 int disconnect = 0; 883 struct c4iw_qp_attributes attrs = {0}; 884 885 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sbused %d", __func__, 886 ep->com.so, ep, states[ep->com.state], sbused(&ep->com.so->so_rcv)); 887 888 switch (ep->com.state) { 889 case MPA_REQ_SENT: 890 disconnect = process_mpa_reply(ep); 891 break; 892 case MPA_REQ_WAIT: 893 disconnect = process_mpa_request(ep); 894 if (disconnect) 895 /* Refered in process_newconn() */ 896 c4iw_put_ep(&ep->parent_ep->com); 897 break; 898 case FPDU_MODE: 899 MPASS(ep->com.qp != NULL); 900 attrs.next_state = C4IW_QP_STATE_TERMINATE; 901 ret = c4iw_modify_qp(ep->com.dev, ep->com.qp, 902 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 903 if (ret != -EINPROGRESS) 904 disconnect = 1; 905 break; 906 default: 907 log(LOG_ERR, "%s: Unexpected streaming data. ep %p, " 908 "state %d, so %p, so_state 0x%x, sbused %u\n", 909 __func__, ep, ep->com.state, ep->com.so, 910 ep->com.so->so_state, sbused(&ep->com.so->so_rcv)); 911 break; 912 } 913 if (disconnect) 914 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); 915 916 } 917 918 static void 919 process_connected(struct c4iw_ep *ep) 920 { 921 struct socket *so = ep->com.so; 922 923 if ((so->so_state & SS_ISCONNECTED) && !so->so_error) { 924 if (send_mpa_req(ep)) 925 goto err; 926 } else { 927 connect_reply_upcall(ep, -so->so_error); 928 goto err; 929 } 930 return; 931 err: 932 close_socket(so); 933 ep->com.state = DEAD; 934 c4iw_put_ep(&ep->com); 935 return; 936 } 937 938 static inline int c4iw_zero_addr(struct sockaddr *addr) 939 { 940 struct in6_addr *ip6; 941 942 if (addr->sa_family == AF_INET) 943 return IN_ZERONET( 944 ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr)); 945 else { 946 ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; 947 return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | 948 ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; 949 } 950 } 951 952 static inline int c4iw_loopback_addr(struct sockaddr *addr) 953 { 954 if (addr->sa_family == AF_INET) 955 return IN_LOOPBACK( 956 ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 957 else 958 return IN6_IS_ADDR_LOOPBACK( 959 &((struct sockaddr_in6 *) addr)->sin6_addr); 960 } 961 962 static inline int c4iw_any_addr(struct sockaddr *addr) 963 { 964 return c4iw_zero_addr(addr) || c4iw_loopback_addr(addr); 965 } 966 967 static void 968 process_newconn(struct c4iw_listen_ep *master_lep, struct socket *new_so) 969 { 970 struct c4iw_listen_ep *real_lep = NULL; 971 struct c4iw_ep *new_ep = NULL; 972 struct sockaddr_in *remote = NULL; 973 int ret = 0; 974 975 MPASS(new_so != NULL); 976 977 if (c4iw_any_addr((struct sockaddr *)&master_lep->com.local_addr)) { 978 /* Here we need to find the 'real_lep' that belongs to the 979 * incomming socket's network interface, such that the newly 980 * created 'ep' can be attached to the real 'lep'. 981 */ 982 real_lep = find_real_listen_ep(master_lep, new_so); 983 if (real_lep == NULL) { 984 CTR2(KTR_IW_CXGBE, "%s: Could not find the real listen " 985 "ep for sock: %p", __func__, new_so); 986 log(LOG_ERR,"%s: Could not find the real listen ep for " 987 "sock: %p\n", __func__, new_so); 988 /* FIXME: properly free the 'new_so' in failure case. 989 * Use of soabort() and soclose() are not legal 990 * here(before soaccept()). 991 */ 992 return; 993 } 994 } else /* for Non-Wildcard address, master_lep is always the real_lep */ 995 real_lep = master_lep; 996 997 new_ep = alloc_ep(sizeof(*new_ep), GFP_KERNEL); 998 999 CTR6(KTR_IW_CXGBE, "%s: master_lep %p, real_lep: %p, new ep %p, " 1000 "listening so %p, new so %p", __func__, master_lep, real_lep, 1001 new_ep, master_lep->com.so, new_so); 1002 1003 new_ep->com.dev = real_lep->com.dev; 1004 new_ep->com.so = new_so; 1005 new_ep->com.cm_id = NULL; 1006 new_ep->com.thread = real_lep->com.thread; 1007 new_ep->parent_ep = real_lep; 1008 1009 GET_LOCAL_ADDR(&new_ep->com.local_addr, new_so); 1010 GET_REMOTE_ADDR(&new_ep->com.remote_addr, new_so); 1011 c4iw_get_ep(&real_lep->com); 1012 init_timer(&new_ep->timer); 1013 new_ep->com.state = MPA_REQ_WAIT; 1014 1015 setiwsockopt(new_so); 1016 ret = soaccept(new_so, (struct sockaddr **)&remote); 1017 if (ret != 0) { 1018 CTR4(KTR_IW_CXGBE, 1019 "%s:listen sock:%p, new sock:%p, ret:%d", 1020 __func__, master_lep->com.so, new_so, ret); 1021 if (remote != NULL) 1022 free(remote, M_SONAME); 1023 soclose(new_so); 1024 c4iw_put_ep(&new_ep->com); 1025 c4iw_put_ep(&real_lep->com); 1026 return; 1027 } 1028 free(remote, M_SONAME); 1029 1030 START_EP_TIMER(new_ep); 1031 1032 /* MPA request might have been queued up on the socket already, so we 1033 * initialize the socket/upcall_handler under lock to prevent processing 1034 * MPA request on another thread(via process_req()) simultaniously. 1035 */ 1036 c4iw_get_ep(&new_ep->com); /* Dereferenced at the end below, this is to 1037 avoid freeing of ep before ep unlock. */ 1038 mutex_lock(&new_ep->com.mutex); 1039 init_iwarp_socket(new_so, &new_ep->com); 1040 1041 ret = process_mpa_request(new_ep); 1042 if (ret) { 1043 /* ABORT */ 1044 c4iw_ep_disconnect(new_ep, 1, GFP_KERNEL); 1045 c4iw_put_ep(&real_lep->com); 1046 } 1047 mutex_unlock(&new_ep->com.mutex); 1048 c4iw_put_ep(&new_ep->com); 1049 return; 1050 } 1051 1052 static int 1053 add_ep_to_req_list(struct c4iw_ep *ep, int new_ep_event) 1054 { 1055 unsigned long flag; 1056 1057 spin_lock_irqsave(&req_lock, flag); 1058 if (ep && ep->com.so) { 1059 ep->com.ep_events |= new_ep_event; 1060 if (!ep->com.entry.tqe_prev) { 1061 c4iw_get_ep(&ep->com); 1062 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry); 1063 queue_work(c4iw_taskq, &c4iw_task); 1064 } 1065 } 1066 spin_unlock_irqrestore(&req_lock, flag); 1067 1068 return (0); 1069 } 1070 1071 static int 1072 c4iw_so_upcall(struct socket *so, void *arg, int waitflag) 1073 { 1074 struct c4iw_ep *ep = arg; 1075 1076 CTR6(KTR_IW_CXGBE, 1077 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p", 1078 __func__, so, so->so_state, ep, states[ep->com.state], 1079 ep->com.entry.tqe_prev); 1080 1081 MPASS(ep->com.so == so); 1082 /* 1083 * Wake up any threads waiting in rdma_init()/rdma_fini(), 1084 * with locks held. 1085 */ 1086 if (so->so_error || (ep->com.dev->rdev.flags & T4_FATAL_ERROR)) 1087 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 1088 add_ep_to_req_list(ep, C4IW_EVENT_SOCKET); 1089 1090 return (SU_OK); 1091 } 1092 1093 1094 static int 1095 terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) 1096 { 1097 struct adapter *sc = iq->adapter; 1098 const struct cpl_rdma_terminate *cpl = mtod(m, const void *); 1099 unsigned int tid = GET_TID(cpl); 1100 struct toepcb *toep = lookup_tid(sc, tid); 1101 struct socket *so; 1102 struct c4iw_ep *ep; 1103 1104 INP_WLOCK(toep->inp); 1105 so = inp_inpcbtosocket(toep->inp); 1106 ep = so->so_rcv.sb_upcallarg; 1107 INP_WUNLOCK(toep->inp); 1108 1109 CTR3(KTR_IW_CXGBE, "%s: so %p, ep %p", __func__, so, ep); 1110 add_ep_to_req_list(ep, C4IW_EVENT_TERM); 1111 1112 return 0; 1113 } 1114 1115 static void 1116 process_socket_event(struct c4iw_ep *ep) 1117 { 1118 int state = ep->com.state; 1119 struct socket *so = ep->com.so; 1120 1121 if (ep->com.state == DEAD) { 1122 CTR3(KTR_IW_CXGBE, "%s: Pending socket event discarded " 1123 "ep %p ep_state %s", __func__, ep, states[state]); 1124 return; 1125 } 1126 1127 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, " 1128 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state, 1129 so->so_error, so->so_rcv.sb_state, ep, states[state]); 1130 1131 if (state == CONNECTING) { 1132 process_connected(ep); 1133 return; 1134 } 1135 1136 if (state == LISTEN) { 1137 struct c4iw_listen_ep *lep = (struct c4iw_listen_ep *)ep; 1138 struct socket *listen_so = so, *new_so = NULL; 1139 int error = 0; 1140 1141 SOLISTEN_LOCK(listen_so); 1142 do { 1143 error = solisten_dequeue(listen_so, &new_so, 1144 SOCK_NONBLOCK); 1145 if (error) { 1146 CTR4(KTR_IW_CXGBE, "%s: lep %p listen_so %p " 1147 "error %d", __func__, lep, listen_so, 1148 error); 1149 return; 1150 } 1151 process_newconn(lep, new_so); 1152 1153 /* solisten_dequeue() unlocks while return, so aquire 1154 * lock again for sol_qlen and also for next iteration. 1155 */ 1156 SOLISTEN_LOCK(listen_so); 1157 } while (listen_so->sol_qlen); 1158 SOLISTEN_UNLOCK(listen_so); 1159 1160 return; 1161 } 1162 1163 /* connection error */ 1164 if (so->so_error) { 1165 process_conn_error(ep); 1166 return; 1167 } 1168 1169 /* peer close */ 1170 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state <= CLOSING) { 1171 process_peer_close(ep); 1172 /* 1173 * check whether socket disconnect event is pending before 1174 * returning. Fallthrough if yes. 1175 */ 1176 if (!(so->so_state & SS_ISDISCONNECTED)) 1177 return; 1178 } 1179 1180 /* close complete */ 1181 if (so->so_state & SS_ISDISCONNECTED) { 1182 process_close_complete(ep); 1183 return; 1184 } 1185 1186 /* rx data */ 1187 if (sbused(&ep->com.so->so_rcv)) { 1188 process_data(ep); 1189 return; 1190 } 1191 1192 /* Socket events for 'MPA Request Received' and 'Close Complete' 1193 * were already processed earlier in their previous events handlers. 1194 * Hence, these socket events are skipped. 1195 * And any other socket events must have handled above. 1196 */ 1197 MPASS((ep->com.state == MPA_REQ_RCVD) || (ep->com.state == MORIBUND)); 1198 1199 if ((ep->com.state != MPA_REQ_RCVD) && (ep->com.state != MORIBUND)) 1200 log(LOG_ERR, "%s: Unprocessed socket event so %p, " 1201 "so_state 0x%x, so_err %d, sb_state 0x%x, ep %p, ep_state %s\n", 1202 __func__, so, so->so_state, so->so_error, so->so_rcv.sb_state, 1203 ep, states[state]); 1204 1205 } 1206 1207 SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 1208 "iw_cxgbe driver parameters"); 1209 1210 static int dack_mode = 0; 1211 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RWTUN, &dack_mode, 0, 1212 "Delayed ack mode (default = 0)"); 1213 1214 int c4iw_max_read_depth = 8; 1215 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RWTUN, &c4iw_max_read_depth, 0, 1216 "Per-connection max ORD/IRD (default = 8)"); 1217 1218 static int enable_tcp_timestamps; 1219 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RWTUN, &enable_tcp_timestamps, 0, 1220 "Enable tcp timestamps (default = 0)"); 1221 1222 static int enable_tcp_sack; 1223 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RWTUN, &enable_tcp_sack, 0, 1224 "Enable tcp SACK (default = 0)"); 1225 1226 static int enable_tcp_window_scaling = 1; 1227 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RWTUN, &enable_tcp_window_scaling, 0, 1228 "Enable tcp window scaling (default = 1)"); 1229 1230 int c4iw_debug = 0; 1231 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RWTUN, &c4iw_debug, 0, 1232 "Enable debug logging (default = 0)"); 1233 1234 static int peer2peer = 1; 1235 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RWTUN, &peer2peer, 0, 1236 "Support peer2peer ULPs (default = 1)"); 1237 1238 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 1239 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RWTUN, &p2p_type, 0, 1240 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)"); 1241 1242 static int ep_timeout_secs = 60; 1243 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RWTUN, &ep_timeout_secs, 0, 1244 "CM Endpoint operation timeout in seconds (default = 60)"); 1245 1246 static int mpa_rev = 1; 1247 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RWTUN, &mpa_rev, 0, 1248 "MPA Revision, 0 supports amso1100, 1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)"); 1249 1250 static int markers_enabled; 1251 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RWTUN, &markers_enabled, 0, 1252 "Enable MPA MARKERS (default(0) = disabled)"); 1253 1254 static int crc_enabled = 1; 1255 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RWTUN, &crc_enabled, 0, 1256 "Enable MPA CRC (default(1) = enabled)"); 1257 1258 static int rcv_win = 256 * 1024; 1259 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RWTUN, &rcv_win, 0, 1260 "TCP receive window in bytes (default = 256KB)"); 1261 1262 static int snd_win = 128 * 1024; 1263 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RWTUN, &snd_win, 0, 1264 "TCP send window in bytes (default = 128KB)"); 1265 1266 int use_dsgl = 1; 1267 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, use_dsgl, CTLFLAG_RWTUN, &use_dsgl, 0, 1268 "Use DSGL for PBL/FastReg (default=1)"); 1269 1270 int inline_threshold = 128; 1271 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, inline_threshold, CTLFLAG_RWTUN, &inline_threshold, 0, 1272 "inline vs dsgl threshold (default=128)"); 1273 1274 static int reuseaddr = 0; 1275 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, reuseaddr, CTLFLAG_RWTUN, &reuseaddr, 0, 1276 "Enable SO_REUSEADDR & SO_REUSEPORT socket options on all iWARP client connections(default = 0)"); 1277 1278 static void 1279 start_ep_timer(struct c4iw_ep *ep) 1280 { 1281 1282 if (timer_pending(&ep->timer)) { 1283 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep); 1284 printk(KERN_ERR "%s timer already started! ep %p\n", __func__, 1285 ep); 1286 return; 1287 } 1288 clear_bit(TIMEOUT, &ep->com.flags); 1289 c4iw_get_ep(&ep->com); 1290 ep->timer.expires = jiffies + ep_timeout_secs * HZ; 1291 ep->timer.data = (unsigned long)ep; 1292 ep->timer.function = ep_timeout; 1293 add_timer(&ep->timer); 1294 } 1295 1296 static int 1297 stop_ep_timer(struct c4iw_ep *ep) 1298 { 1299 1300 del_timer_sync(&ep->timer); 1301 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 1302 c4iw_put_ep(&ep->com); 1303 return 0; 1304 } 1305 return 1; 1306 } 1307 1308 static void * 1309 alloc_ep(int size, gfp_t gfp) 1310 { 1311 struct c4iw_ep_common *epc; 1312 1313 epc = kzalloc(size, gfp); 1314 if (epc == NULL) 1315 return (NULL); 1316 1317 kref_init(&epc->kref); 1318 mutex_init(&epc->mutex); 1319 c4iw_init_wr_wait(&epc->wr_wait); 1320 1321 return (epc); 1322 } 1323 1324 void _c4iw_free_ep(struct kref *kref) 1325 { 1326 struct c4iw_ep *ep; 1327 struct c4iw_ep_common *epc; 1328 1329 ep = container_of(kref, struct c4iw_ep, com.kref); 1330 epc = &ep->com; 1331 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list", 1332 __func__, epc)); 1333 if (test_bit(QP_REFERENCED, &ep->com.flags)) 1334 deref_qp(ep); 1335 CTR4(KTR_IW_CXGBE, "%s: ep %p, history 0x%lx, flags 0x%lx", 1336 __func__, ep, epc->history, epc->flags); 1337 kfree(ep); 1338 } 1339 1340 static void release_ep_resources(struct c4iw_ep *ep) 1341 { 1342 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep); 1343 set_bit(RELEASE_RESOURCES, &ep->com.flags); 1344 c4iw_put_ep(&ep->com); 1345 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep); 1346 } 1347 1348 static int 1349 send_mpa_req(struct c4iw_ep *ep) 1350 { 1351 int mpalen; 1352 struct mpa_message *mpa; 1353 struct mpa_v2_conn_params mpa_v2_params; 1354 struct mbuf *m; 1355 char mpa_rev_to_use = mpa_rev; 1356 int err = 0; 1357 1358 if (ep->retry_with_mpa_v1) 1359 mpa_rev_to_use = 1; 1360 mpalen = sizeof(*mpa) + ep->plen; 1361 if (mpa_rev_to_use == 2) 1362 mpalen += sizeof(struct mpa_v2_conn_params); 1363 1364 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1365 if (mpa == NULL) { 1366 err = -ENOMEM; 1367 CTR3(KTR_IW_CXGBE, "%s:smr1 ep: %p , error: %d", 1368 __func__, ep, err); 1369 goto err; 1370 } 1371 1372 memset(mpa, 0, mpalen); 1373 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 1374 mpa->flags = (crc_enabled ? MPA_CRC : 0) | 1375 (markers_enabled ? MPA_MARKERS : 0) | 1376 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); 1377 mpa->private_data_size = htons(ep->plen); 1378 mpa->revision = mpa_rev_to_use; 1379 1380 if (mpa_rev_to_use == 1) { 1381 ep->tried_with_mpa_v1 = 1; 1382 ep->retry_with_mpa_v1 = 0; 1383 } 1384 1385 if (mpa_rev_to_use == 2) { 1386 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1387 sizeof(struct mpa_v2_conn_params)); 1388 mpa_v2_params.ird = htons((u16)ep->ird); 1389 mpa_v2_params.ord = htons((u16)ep->ord); 1390 1391 if (peer2peer) { 1392 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1393 1394 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1395 mpa_v2_params.ord |= 1396 htons(MPA_V2_RDMA_WRITE_RTR); 1397 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1398 mpa_v2_params.ord |= 1399 htons(MPA_V2_RDMA_READ_RTR); 1400 } 1401 } 1402 memcpy(mpa->private_data, &mpa_v2_params, 1403 sizeof(struct mpa_v2_conn_params)); 1404 1405 if (ep->plen) { 1406 1407 memcpy(mpa->private_data + 1408 sizeof(struct mpa_v2_conn_params), 1409 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1410 } 1411 } else { 1412 1413 if (ep->plen) 1414 memcpy(mpa->private_data, 1415 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1416 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep); 1417 } 1418 1419 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1420 if (m == NULL) { 1421 err = -ENOMEM; 1422 CTR3(KTR_IW_CXGBE, "%s:smr2 ep: %p , error: %d", 1423 __func__, ep, err); 1424 free(mpa, M_CXGBE); 1425 goto err; 1426 } 1427 m_copyback(m, 0, mpalen, (void *)mpa); 1428 free(mpa, M_CXGBE); 1429 1430 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1431 ep->com.thread); 1432 if (err) { 1433 CTR3(KTR_IW_CXGBE, "%s:smr3 ep: %p , error: %d", 1434 __func__, ep, err); 1435 goto err; 1436 } 1437 1438 START_EP_TIMER(ep); 1439 ep->com.state = MPA_REQ_SENT; 1440 ep->mpa_attr.initiator = 1; 1441 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1442 return 0; 1443 err: 1444 connect_reply_upcall(ep, err); 1445 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1446 return err; 1447 } 1448 1449 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 1450 { 1451 int mpalen ; 1452 struct mpa_message *mpa; 1453 struct mpa_v2_conn_params mpa_v2_params; 1454 struct mbuf *m; 1455 int err; 1456 1457 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid, 1458 ep->plen); 1459 1460 mpalen = sizeof(*mpa) + plen; 1461 1462 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1463 1464 mpalen += sizeof(struct mpa_v2_conn_params); 1465 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep, 1466 ep->mpa_attr.version, mpalen); 1467 } 1468 1469 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1470 if (mpa == NULL) 1471 return (-ENOMEM); 1472 1473 memset(mpa, 0, mpalen); 1474 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1475 mpa->flags = MPA_REJECT; 1476 mpa->revision = mpa_rev; 1477 mpa->private_data_size = htons(plen); 1478 1479 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1480 1481 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1482 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1483 sizeof(struct mpa_v2_conn_params)); 1484 mpa_v2_params.ird = htons(((u16)ep->ird) | 1485 (peer2peer ? MPA_V2_PEER2PEER_MODEL : 1486 0)); 1487 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 1488 (p2p_type == 1489 FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 1490 MPA_V2_RDMA_WRITE_RTR : p2p_type == 1491 FW_RI_INIT_P2PTYPE_READ_REQ ? 1492 MPA_V2_RDMA_READ_RTR : 0) : 0)); 1493 memcpy(mpa->private_data, &mpa_v2_params, 1494 sizeof(struct mpa_v2_conn_params)); 1495 1496 if (ep->plen) 1497 memcpy(mpa->private_data + 1498 sizeof(struct mpa_v2_conn_params), pdata, plen); 1499 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep, 1500 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen); 1501 } else 1502 if (plen) 1503 memcpy(mpa->private_data, pdata, plen); 1504 1505 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1506 if (m == NULL) { 1507 free(mpa, M_CXGBE); 1508 return (-ENOMEM); 1509 } 1510 m_copyback(m, 0, mpalen, (void *)mpa); 1511 free(mpa, M_CXGBE); 1512 1513 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread); 1514 if (!err) 1515 ep->snd_seq += mpalen; 1516 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err); 1517 return err; 1518 } 1519 1520 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 1521 { 1522 int mpalen; 1523 struct mpa_message *mpa; 1524 struct mbuf *m; 1525 struct mpa_v2_conn_params mpa_v2_params; 1526 int err; 1527 1528 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep); 1529 1530 mpalen = sizeof(*mpa) + plen; 1531 1532 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1533 1534 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep, 1535 ep->mpa_attr.version); 1536 mpalen += sizeof(struct mpa_v2_conn_params); 1537 } 1538 1539 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1540 if (mpa == NULL) 1541 return (-ENOMEM); 1542 1543 memset(mpa, 0, sizeof(*mpa)); 1544 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1545 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 1546 (markers_enabled ? MPA_MARKERS : 0); 1547 mpa->revision = ep->mpa_attr.version; 1548 mpa->private_data_size = htons(plen); 1549 1550 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1551 1552 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1553 mpa->private_data_size += 1554 htons(sizeof(struct mpa_v2_conn_params)); 1555 mpa_v2_params.ird = htons((u16)ep->ird); 1556 mpa_v2_params.ord = htons((u16)ep->ord); 1557 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep, 1558 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord); 1559 1560 if (peer2peer && (ep->mpa_attr.p2p_type != 1561 FW_RI_INIT_P2PTYPE_DISABLED)) { 1562 1563 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1564 1565 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1566 1567 mpa_v2_params.ord |= 1568 htons(MPA_V2_RDMA_WRITE_RTR); 1569 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d", 1570 __func__, ep, p2p_type, mpa_v2_params.ird, 1571 mpa_v2_params.ord); 1572 } 1573 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1574 1575 mpa_v2_params.ord |= 1576 htons(MPA_V2_RDMA_READ_RTR); 1577 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d", 1578 __func__, ep, p2p_type, mpa_v2_params.ird, 1579 mpa_v2_params.ord); 1580 } 1581 } 1582 1583 memcpy(mpa->private_data, &mpa_v2_params, 1584 sizeof(struct mpa_v2_conn_params)); 1585 1586 if (ep->plen) 1587 memcpy(mpa->private_data + 1588 sizeof(struct mpa_v2_conn_params), pdata, plen); 1589 } else 1590 if (plen) 1591 memcpy(mpa->private_data, pdata, plen); 1592 1593 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1594 if (m == NULL) { 1595 free(mpa, M_CXGBE); 1596 return (-ENOMEM); 1597 } 1598 m_copyback(m, 0, mpalen, (void *)mpa); 1599 free(mpa, M_CXGBE); 1600 1601 1602 ep->com.state = MPA_REP_SENT; 1603 ep->snd_seq += mpalen; 1604 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1605 ep->com.thread); 1606 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err); 1607 return err; 1608 } 1609 1610 1611 1612 static void close_complete_upcall(struct c4iw_ep *ep, int status) 1613 { 1614 struct iw_cm_event event; 1615 1616 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep); 1617 memset(&event, 0, sizeof(event)); 1618 event.event = IW_CM_EVENT_CLOSE; 1619 event.status = status; 1620 1621 if (ep->com.cm_id) { 1622 1623 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep); 1624 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1625 deref_cm_id(&ep->com); 1626 set_bit(CLOSE_UPCALL, &ep->com.history); 1627 } 1628 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep); 1629 } 1630 1631 static int 1632 send_abort(struct c4iw_ep *ep) 1633 { 1634 struct socket *so = ep->com.so; 1635 struct sockopt sopt; 1636 int rc; 1637 struct linger l; 1638 1639 CTR5(KTR_IW_CXGBE, "%s ep %p so %p state %s tid %d", __func__, ep, so, 1640 states[ep->com.state], ep->hwtid); 1641 1642 l.l_onoff = 1; 1643 l.l_linger = 0; 1644 1645 /* linger_time of 0 forces RST to be sent */ 1646 sopt.sopt_dir = SOPT_SET; 1647 sopt.sopt_level = SOL_SOCKET; 1648 sopt.sopt_name = SO_LINGER; 1649 sopt.sopt_val = (caddr_t)&l; 1650 sopt.sopt_valsize = sizeof l; 1651 sopt.sopt_td = NULL; 1652 rc = -sosetopt(so, &sopt); 1653 if (rc != 0) { 1654 log(LOG_ERR, "%s: sosetopt(%p, linger = 0) failed with %d.\n", 1655 __func__, so, rc); 1656 } 1657 1658 uninit_iwarp_socket(so); 1659 soclose(so); 1660 set_bit(ABORT_CONN, &ep->com.history); 1661 1662 /* 1663 * TBD: iw_cxgbe driver should receive ABORT reply for every ABORT 1664 * request it has sent. But the current TOE driver is not propagating 1665 * this ABORT reply event (via do_abort_rpl) to iw_cxgbe. So as a work- 1666 * around de-refererece 'ep' here instead of doing it in abort_rpl() 1667 * handler(not yet implemented) of iw_cxgbe driver. 1668 */ 1669 release_ep_resources(ep); 1670 ep->com.state = DEAD; 1671 1672 return (0); 1673 } 1674 1675 static void peer_close_upcall(struct c4iw_ep *ep) 1676 { 1677 struct iw_cm_event event; 1678 1679 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep); 1680 memset(&event, 0, sizeof(event)); 1681 event.event = IW_CM_EVENT_DISCONNECT; 1682 1683 if (ep->com.cm_id) { 1684 1685 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep); 1686 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1687 set_bit(DISCONN_UPCALL, &ep->com.history); 1688 } 1689 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep); 1690 } 1691 1692 static void peer_abort_upcall(struct c4iw_ep *ep) 1693 { 1694 struct iw_cm_event event; 1695 1696 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep); 1697 memset(&event, 0, sizeof(event)); 1698 event.event = IW_CM_EVENT_CLOSE; 1699 event.status = -ECONNRESET; 1700 1701 if (ep->com.cm_id) { 1702 1703 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep); 1704 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1705 deref_cm_id(&ep->com); 1706 set_bit(ABORT_UPCALL, &ep->com.history); 1707 } 1708 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep); 1709 } 1710 1711 static void connect_reply_upcall(struct c4iw_ep *ep, int status) 1712 { 1713 struct iw_cm_event event; 1714 1715 CTR3(KTR_IW_CXGBE, "%s:cruB %p, status: %d", __func__, ep, status); 1716 memset(&event, 0, sizeof(event)); 1717 event.event = IW_CM_EVENT_CONNECT_REPLY; 1718 event.status = ((status == -ECONNABORTED) || (status == -EPIPE)) ? 1719 -ECONNRESET : status; 1720 event.local_addr = ep->com.local_addr; 1721 event.remote_addr = ep->com.remote_addr; 1722 1723 if ((status == 0) || (status == -ECONNREFUSED)) { 1724 1725 if (!ep->tried_with_mpa_v1) { 1726 1727 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep); 1728 /* this means MPA_v2 is used */ 1729 event.ord = ep->ird; 1730 event.ird = ep->ord; 1731 event.private_data_len = ep->plen - 1732 sizeof(struct mpa_v2_conn_params); 1733 event.private_data = ep->mpa_pkt + 1734 sizeof(struct mpa_message) + 1735 sizeof(struct mpa_v2_conn_params); 1736 } else { 1737 1738 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep); 1739 /* this means MPA_v1 is used */ 1740 event.ord = c4iw_max_read_depth; 1741 event.ird = c4iw_max_read_depth; 1742 event.private_data_len = ep->plen; 1743 event.private_data = ep->mpa_pkt + 1744 sizeof(struct mpa_message); 1745 } 1746 } 1747 1748 if (ep->com.cm_id) { 1749 1750 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep); 1751 set_bit(CONN_RPL_UPCALL, &ep->com.history); 1752 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1753 } 1754 1755 if(status == -ECONNABORTED) { 1756 1757 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status); 1758 return; 1759 } 1760 1761 if (status < 0) { 1762 1763 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status); 1764 deref_cm_id(&ep->com); 1765 } 1766 1767 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep); 1768 } 1769 1770 static int connect_request_upcall(struct c4iw_ep *ep) 1771 { 1772 struct iw_cm_event event; 1773 int ret; 1774 1775 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep, 1776 ep->tried_with_mpa_v1); 1777 1778 memset(&event, 0, sizeof(event)); 1779 event.event = IW_CM_EVENT_CONNECT_REQUEST; 1780 event.local_addr = ep->com.local_addr; 1781 event.remote_addr = ep->com.remote_addr; 1782 event.provider_data = ep; 1783 1784 if (!ep->tried_with_mpa_v1) { 1785 /* this means MPA_v2 is used */ 1786 event.ord = ep->ord; 1787 event.ird = ep->ird; 1788 event.private_data_len = ep->plen - 1789 sizeof(struct mpa_v2_conn_params); 1790 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 1791 sizeof(struct mpa_v2_conn_params); 1792 } else { 1793 1794 /* this means MPA_v1 is used. Send max supported */ 1795 event.ord = c4iw_max_read_depth; 1796 event.ird = c4iw_max_read_depth; 1797 event.private_data_len = ep->plen; 1798 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 1799 } 1800 1801 c4iw_get_ep(&ep->com); 1802 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, 1803 &event); 1804 if(ret) { 1805 CTR3(KTR_IW_CXGBE, "%s: ep %p, Failure while notifying event to" 1806 " IWCM, err:%d", __func__, ep, ret); 1807 c4iw_put_ep(&ep->com); 1808 } else 1809 /* Dereference parent_ep only in success case. 1810 * In case of failure, parent_ep is dereferenced by the caller 1811 * of process_mpa_request(). 1812 */ 1813 c4iw_put_ep(&ep->parent_ep->com); 1814 1815 set_bit(CONNREQ_UPCALL, &ep->com.history); 1816 return ret; 1817 } 1818 1819 static void established_upcall(struct c4iw_ep *ep) 1820 { 1821 struct iw_cm_event event; 1822 1823 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep); 1824 memset(&event, 0, sizeof(event)); 1825 event.event = IW_CM_EVENT_ESTABLISHED; 1826 event.ird = ep->ord; 1827 event.ord = ep->ird; 1828 1829 if (ep->com.cm_id) { 1830 1831 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep); 1832 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1833 set_bit(ESTAB_UPCALL, &ep->com.history); 1834 } 1835 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep); 1836 } 1837 1838 1839 #define RELAXED_IRD_NEGOTIATION 1 1840 1841 /* 1842 * process_mpa_reply - process streaming mode MPA reply 1843 * 1844 * Returns: 1845 * 1846 * 0 upon success indicating a connect request was delivered to the ULP 1847 * or the mpa request is incomplete but valid so far. 1848 * 1849 * 1 if a failure requires the caller to close the connection. 1850 * 1851 * 2 if a failure requires the caller to abort the connection. 1852 */ 1853 static int process_mpa_reply(struct c4iw_ep *ep) 1854 { 1855 struct mpa_message *mpa; 1856 struct mpa_v2_conn_params *mpa_v2_params; 1857 u16 plen; 1858 u16 resp_ird, resp_ord; 1859 u8 rtr_mismatch = 0, insuff_ird = 0; 1860 struct c4iw_qp_attributes attrs = {0}; 1861 enum c4iw_qp_attr_mask mask; 1862 int err; 1863 struct mbuf *top, *m; 1864 int flags = MSG_DONTWAIT; 1865 struct uio uio; 1866 int disconnect = 0; 1867 1868 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep); 1869 1870 /* 1871 * Stop mpa timer. If it expired, then 1872 * we ignore the MPA reply. process_timeout() 1873 * will abort the connection. 1874 */ 1875 if (STOP_EP_TIMER(ep)) 1876 return 0; 1877 1878 uio.uio_resid = 1000000; 1879 uio.uio_td = ep->com.thread; 1880 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags); 1881 1882 if (err) { 1883 1884 if (err == EWOULDBLOCK) { 1885 1886 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep); 1887 START_EP_TIMER(ep); 1888 return 0; 1889 } 1890 err = -err; 1891 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep); 1892 goto err; 1893 } 1894 1895 if (ep->com.so->so_rcv.sb_mb) { 1896 1897 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep); 1898 printf("%s data after soreceive called! so %p sb_mb %p top %p\n", 1899 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top); 1900 } 1901 1902 m = top; 1903 1904 do { 1905 1906 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep); 1907 /* 1908 * If we get more than the supported amount of private data 1909 * then we must fail this connection. 1910 */ 1911 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) { 1912 1913 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep, 1914 ep->mpa_pkt_len + m->m_len); 1915 err = (-EINVAL); 1916 goto err_stop_timer; 1917 } 1918 1919 /* 1920 * copy the new data into our accumulation buffer. 1921 */ 1922 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len])); 1923 ep->mpa_pkt_len += m->m_len; 1924 if (!m->m_next) 1925 m = m->m_nextpkt; 1926 else 1927 m = m->m_next; 1928 } while (m); 1929 1930 m_freem(top); 1931 /* 1932 * if we don't even have the mpa message, then bail. 1933 */ 1934 if (ep->mpa_pkt_len < sizeof(*mpa)) { 1935 return 0; 1936 } 1937 mpa = (struct mpa_message *) ep->mpa_pkt; 1938 1939 /* Validate MPA header. */ 1940 if (mpa->revision > mpa_rev) { 1941 1942 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep, 1943 mpa->revision, mpa_rev); 1944 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, " 1945 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1946 err = -EPROTO; 1947 goto err_stop_timer; 1948 } 1949 1950 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1951 1952 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep); 1953 err = -EPROTO; 1954 goto err_stop_timer; 1955 } 1956 1957 plen = ntohs(mpa->private_data_size); 1958 1959 /* 1960 * Fail if there's too much private data. 1961 */ 1962 if (plen > MPA_MAX_PRIVATE_DATA) { 1963 1964 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep); 1965 err = -EPROTO; 1966 goto err_stop_timer; 1967 } 1968 1969 /* 1970 * If plen does not account for pkt size 1971 */ 1972 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1973 1974 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep); 1975 STOP_EP_TIMER(ep); 1976 err = -EPROTO; 1977 goto err_stop_timer; 1978 } 1979 1980 ep->plen = (u8) plen; 1981 1982 /* 1983 * If we don't have all the pdata yet, then bail. 1984 * We'll continue process when more data arrives. 1985 */ 1986 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) { 1987 1988 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep); 1989 return 0; 1990 } 1991 1992 if (mpa->flags & MPA_REJECT) { 1993 1994 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep); 1995 err = -ECONNREFUSED; 1996 goto err_stop_timer; 1997 } 1998 1999 /* 2000 * If we get here we have accumulated the entire mpa 2001 * start reply message including private data. And 2002 * the MPA header is valid. 2003 */ 2004 ep->com.state = FPDU_MODE; 2005 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2006 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2007 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2008 ep->mpa_attr.version = mpa->revision; 2009 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2010 2011 if (mpa->revision == 2) { 2012 2013 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep); 2014 ep->mpa_attr.enhanced_rdma_conn = 2015 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2016 2017 if (ep->mpa_attr.enhanced_rdma_conn) { 2018 2019 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep); 2020 mpa_v2_params = (struct mpa_v2_conn_params *) 2021 (ep->mpa_pkt + sizeof(*mpa)); 2022 resp_ird = ntohs(mpa_v2_params->ird) & 2023 MPA_V2_IRD_ORD_MASK; 2024 resp_ord = ntohs(mpa_v2_params->ord) & 2025 MPA_V2_IRD_ORD_MASK; 2026 2027 /* 2028 * This is a double-check. Ideally, below checks are 2029 * not required since ird/ord stuff has been taken 2030 * care of in c4iw_accept_cr 2031 */ 2032 if (ep->ird < resp_ord) { 2033 if (RELAXED_IRD_NEGOTIATION && resp_ord <= 2034 ep->com.dev->rdev.adap->params.max_ordird_qp) 2035 ep->ird = resp_ord; 2036 else 2037 insuff_ird = 1; 2038 } else if (ep->ird > resp_ord) { 2039 ep->ird = resp_ord; 2040 } 2041 if (ep->ord > resp_ird) { 2042 if (RELAXED_IRD_NEGOTIATION) 2043 ep->ord = resp_ird; 2044 else 2045 insuff_ird = 1; 2046 } 2047 if (insuff_ird) { 2048 err = -ENOMEM; 2049 ep->ird = resp_ord; 2050 ep->ord = resp_ird; 2051 } 2052 2053 if (ntohs(mpa_v2_params->ird) & 2054 MPA_V2_PEER2PEER_MODEL) { 2055 2056 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep); 2057 if (ntohs(mpa_v2_params->ord) & 2058 MPA_V2_RDMA_WRITE_RTR) { 2059 2060 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep); 2061 ep->mpa_attr.p2p_type = 2062 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2063 } 2064 else if (ntohs(mpa_v2_params->ord) & 2065 MPA_V2_RDMA_READ_RTR) { 2066 2067 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep); 2068 ep->mpa_attr.p2p_type = 2069 FW_RI_INIT_P2PTYPE_READ_REQ; 2070 } 2071 } 2072 } 2073 } else { 2074 2075 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep); 2076 2077 if (mpa->revision == 1) { 2078 2079 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep); 2080 2081 if (peer2peer) { 2082 2083 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep); 2084 ep->mpa_attr.p2p_type = p2p_type; 2085 } 2086 } 2087 } 2088 2089 if (set_tcpinfo(ep)) { 2090 2091 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep); 2092 printf("%s set_tcpinfo error\n", __func__); 2093 err = -ECONNRESET; 2094 goto err; 2095 } 2096 2097 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, " 2098 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__, 2099 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2100 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 2101 ep->mpa_attr.p2p_type); 2102 2103 /* 2104 * If responder's RTR does not match with that of initiator, assign 2105 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 2106 * generated when moving QP to RTS state. 2107 * A TERM message will be sent after QP has moved to RTS state 2108 */ 2109 if ((ep->mpa_attr.version == 2) && peer2peer && 2110 (ep->mpa_attr.p2p_type != p2p_type)) { 2111 2112 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep); 2113 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2114 rtr_mismatch = 1; 2115 } 2116 2117 2118 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2119 attrs.mpa_attr = ep->mpa_attr; 2120 attrs.max_ird = ep->ird; 2121 attrs.max_ord = ep->ord; 2122 attrs.llp_stream_handle = ep; 2123 attrs.next_state = C4IW_QP_STATE_RTS; 2124 2125 mask = C4IW_QP_ATTR_NEXT_STATE | 2126 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 2127 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 2128 2129 /* bind QP and TID with INIT_WR */ 2130 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2131 2132 if (err) { 2133 2134 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep); 2135 goto err; 2136 } 2137 2138 /* 2139 * If responder's RTR requirement did not match with what initiator 2140 * supports, generate TERM message 2141 */ 2142 if (rtr_mismatch) { 2143 2144 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep); 2145 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 2146 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2147 attrs.ecode = MPA_NOMATCH_RTR; 2148 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2149 attrs.send_term = 1; 2150 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2151 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2152 err = -ENOMEM; 2153 disconnect = 1; 2154 goto out; 2155 } 2156 2157 /* 2158 * Generate TERM if initiator IRD is not sufficient for responder 2159 * provided ORD. Currently, we do the same behaviour even when 2160 * responder provided IRD is also not sufficient as regards to 2161 * initiator ORD. 2162 */ 2163 if (insuff_ird) { 2164 2165 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep); 2166 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 2167 __func__); 2168 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2169 attrs.ecode = MPA_INSUFF_IRD; 2170 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2171 attrs.send_term = 1; 2172 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2173 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2174 err = -ENOMEM; 2175 disconnect = 1; 2176 goto out; 2177 } 2178 goto out; 2179 err_stop_timer: 2180 STOP_EP_TIMER(ep); 2181 err: 2182 disconnect = 2; 2183 out: 2184 connect_reply_upcall(ep, err); 2185 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep); 2186 return disconnect; 2187 } 2188 2189 /* 2190 * process_mpa_request - process streaming mode MPA request 2191 * 2192 * Returns: 2193 * 2194 * 0 upon success indicating a connect request was delivered to the ULP 2195 * or the mpa request is incomplete but valid so far. 2196 * 2197 * 1 if a failure requires the caller to close the connection. 2198 * 2199 * 2 if a failure requires the caller to abort the connection. 2200 */ 2201 static int 2202 process_mpa_request(struct c4iw_ep *ep) 2203 { 2204 struct mpa_message *mpa; 2205 struct mpa_v2_conn_params *mpa_v2_params; 2206 u16 plen; 2207 int flags = MSG_DONTWAIT; 2208 int rc; 2209 struct iovec iov; 2210 struct uio uio; 2211 enum c4iw_ep_state state = ep->com.state; 2212 2213 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]); 2214 2215 if (state != MPA_REQ_WAIT) 2216 return 0; 2217 2218 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len]; 2219 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2220 uio.uio_iov = &iov; 2221 uio.uio_iovcnt = 1; 2222 uio.uio_offset = 0; 2223 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2224 uio.uio_segflg = UIO_SYSSPACE; 2225 uio.uio_rw = UIO_READ; 2226 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */ 2227 2228 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags); 2229 if (rc == EAGAIN) 2230 return 0; 2231 else if (rc) 2232 goto err_stop_timer; 2233 2234 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data", 2235 __func__, ep->com.so)); 2236 ep->mpa_pkt_len += uio.uio_offset; 2237 2238 /* 2239 * If we get more than the supported amount of private data then we must 2240 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another 2241 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last 2242 * byte is filled by the soreceive above. 2243 */ 2244 2245 /* Don't even have the MPA message. Wait for more data to arrive. */ 2246 if (ep->mpa_pkt_len < sizeof(*mpa)) 2247 return 0; 2248 mpa = (struct mpa_message *) ep->mpa_pkt; 2249 2250 /* 2251 * Validate MPA Header. 2252 */ 2253 if (mpa->revision > mpa_rev) { 2254 log(LOG_ERR, "%s: MPA version mismatch. Local = %d," 2255 " Received = %d\n", __func__, mpa_rev, mpa->revision); 2256 goto err_stop_timer; 2257 } 2258 2259 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) 2260 goto err_stop_timer; 2261 2262 /* 2263 * Fail if there's too much private data. 2264 */ 2265 plen = ntohs(mpa->private_data_size); 2266 if (plen > MPA_MAX_PRIVATE_DATA) 2267 goto err_stop_timer; 2268 2269 /* 2270 * If plen does not account for pkt size 2271 */ 2272 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) 2273 goto err_stop_timer; 2274 2275 ep->plen = (u8) plen; 2276 2277 /* 2278 * If we don't have all the pdata yet, then bail. 2279 */ 2280 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 2281 return 0; 2282 2283 /* 2284 * If we get here we have accumulated the entire mpa 2285 * start reply message including private data. 2286 */ 2287 ep->mpa_attr.initiator = 0; 2288 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2289 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2290 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2291 ep->mpa_attr.version = mpa->revision; 2292 if (mpa->revision == 1) 2293 ep->tried_with_mpa_v1 = 1; 2294 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2295 2296 if (mpa->revision == 2) { 2297 ep->mpa_attr.enhanced_rdma_conn = 2298 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2299 if (ep->mpa_attr.enhanced_rdma_conn) { 2300 mpa_v2_params = (struct mpa_v2_conn_params *) 2301 (ep->mpa_pkt + sizeof(*mpa)); 2302 ep->ird = ntohs(mpa_v2_params->ird) & 2303 MPA_V2_IRD_ORD_MASK; 2304 ep->ird = min_t(u32, ep->ird, 2305 cur_max_read_depth(ep->com.dev)); 2306 ep->ord = ntohs(mpa_v2_params->ord) & 2307 MPA_V2_IRD_ORD_MASK; 2308 ep->ord = min_t(u32, ep->ord, 2309 cur_max_read_depth(ep->com.dev)); 2310 CTR3(KTR_IW_CXGBE, "%s initiator ird %u ord %u", 2311 __func__, ep->ird, ep->ord); 2312 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) 2313 if (peer2peer) { 2314 if (ntohs(mpa_v2_params->ord) & 2315 MPA_V2_RDMA_WRITE_RTR) 2316 ep->mpa_attr.p2p_type = 2317 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2318 else if (ntohs(mpa_v2_params->ord) & 2319 MPA_V2_RDMA_READ_RTR) 2320 ep->mpa_attr.p2p_type = 2321 FW_RI_INIT_P2PTYPE_READ_REQ; 2322 } 2323 } 2324 } else if (mpa->revision == 1 && peer2peer) 2325 ep->mpa_attr.p2p_type = p2p_type; 2326 2327 if (set_tcpinfo(ep)) 2328 goto err_stop_timer; 2329 2330 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, " 2331 "xmit_marker_enabled = %d, version = %d", __func__, 2332 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2333 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); 2334 2335 ep->com.state = MPA_REQ_RCVD; 2336 STOP_EP_TIMER(ep); 2337 2338 /* drive upcall */ 2339 if (ep->parent_ep->com.state != DEAD) 2340 if (connect_request_upcall(ep)) 2341 goto err_out; 2342 return 0; 2343 2344 err_stop_timer: 2345 STOP_EP_TIMER(ep); 2346 err_out: 2347 return 2; 2348 } 2349 2350 /* 2351 * Upcall from the adapter indicating data has been transmitted. 2352 * For us its just the single MPA request or reply. We can now free 2353 * the skb holding the mpa message. 2354 */ 2355 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 2356 { 2357 int err; 2358 struct c4iw_ep *ep = to_ep(cm_id); 2359 int abort = 0; 2360 2361 mutex_lock(&ep->com.mutex); 2362 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep); 2363 2364 if ((ep->com.state == DEAD) || 2365 (ep->com.state != MPA_REQ_RCVD)) { 2366 2367 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep); 2368 mutex_unlock(&ep->com.mutex); 2369 c4iw_put_ep(&ep->com); 2370 return -ECONNRESET; 2371 } 2372 set_bit(ULP_REJECT, &ep->com.history); 2373 2374 if (mpa_rev == 0) { 2375 2376 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep); 2377 abort = 1; 2378 } 2379 else { 2380 2381 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep); 2382 abort = send_mpa_reject(ep, pdata, pdata_len); 2383 } 2384 STOP_EP_TIMER(ep); 2385 err = c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2386 mutex_unlock(&ep->com.mutex); 2387 c4iw_put_ep(&ep->com); 2388 CTR3(KTR_IW_CXGBE, "%s:crc4 %p, err: %d", __func__, ep, err); 2389 return 0; 2390 } 2391 2392 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2393 { 2394 int err; 2395 struct c4iw_qp_attributes attrs = {0}; 2396 enum c4iw_qp_attr_mask mask; 2397 struct c4iw_ep *ep = to_ep(cm_id); 2398 struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 2399 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 2400 int abort = 0; 2401 2402 mutex_lock(&ep->com.mutex); 2403 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep); 2404 2405 if ((ep->com.state == DEAD) || 2406 (ep->com.state != MPA_REQ_RCVD)) { 2407 2408 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep); 2409 err = -ECONNRESET; 2410 goto err_out; 2411 } 2412 2413 BUG_ON(!qp); 2414 2415 set_bit(ULP_ACCEPT, &ep->com.history); 2416 2417 if ((conn_param->ord > c4iw_max_read_depth) || 2418 (conn_param->ird > c4iw_max_read_depth)) { 2419 2420 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep); 2421 err = -EINVAL; 2422 goto err_abort; 2423 } 2424 2425 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 2426 2427 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep); 2428 2429 if (conn_param->ord > ep->ird) { 2430 if (RELAXED_IRD_NEGOTIATION) { 2431 conn_param->ord = ep->ird; 2432 } else { 2433 ep->ird = conn_param->ird; 2434 ep->ord = conn_param->ord; 2435 send_mpa_reject(ep, conn_param->private_data, 2436 conn_param->private_data_len); 2437 err = -ENOMEM; 2438 goto err_abort; 2439 } 2440 } 2441 if (conn_param->ird < ep->ord) { 2442 if (RELAXED_IRD_NEGOTIATION && 2443 ep->ord <= h->rdev.adap->params.max_ordird_qp) { 2444 conn_param->ird = ep->ord; 2445 } else { 2446 err = -ENOMEM; 2447 goto err_abort; 2448 } 2449 } 2450 } 2451 ep->ird = conn_param->ird; 2452 ep->ord = conn_param->ord; 2453 2454 if (ep->mpa_attr.version == 1) { 2455 if (peer2peer && ep->ird == 0) 2456 ep->ird = 1; 2457 } else { 2458 if (peer2peer && 2459 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) && 2460 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0) 2461 ep->ird = 1; 2462 } 2463 2464 CTR4(KTR_IW_CXGBE, "%s %d ird %d ord %d", __func__, __LINE__, 2465 ep->ird, ep->ord); 2466 2467 ep->com.cm_id = cm_id; 2468 ref_cm_id(&ep->com); 2469 ep->com.qp = qp; 2470 ref_qp(ep); 2471 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2472 2473 /* bind QP to EP and move to RTS */ 2474 attrs.mpa_attr = ep->mpa_attr; 2475 attrs.max_ird = ep->ird; 2476 attrs.max_ord = ep->ord; 2477 attrs.llp_stream_handle = ep; 2478 attrs.next_state = C4IW_QP_STATE_RTS; 2479 2480 /* bind QP and TID with INIT_WR */ 2481 mask = C4IW_QP_ATTR_NEXT_STATE | 2482 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 2483 C4IW_QP_ATTR_MPA_ATTR | 2484 C4IW_QP_ATTR_MAX_IRD | 2485 C4IW_QP_ATTR_MAX_ORD; 2486 2487 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2488 if (err) { 2489 CTR3(KTR_IW_CXGBE, "%s:caca %p, err: %d", __func__, ep, err); 2490 goto err_defef_cm_id; 2491 } 2492 2493 err = send_mpa_reply(ep, conn_param->private_data, 2494 conn_param->private_data_len); 2495 if (err) { 2496 CTR3(KTR_IW_CXGBE, "%s:cacb %p, err: %d", __func__, ep, err); 2497 goto err_defef_cm_id; 2498 } 2499 2500 ep->com.state = FPDU_MODE; 2501 established_upcall(ep); 2502 mutex_unlock(&ep->com.mutex); 2503 c4iw_put_ep(&ep->com); 2504 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep); 2505 return 0; 2506 err_defef_cm_id: 2507 deref_cm_id(&ep->com); 2508 err_abort: 2509 abort = 1; 2510 err_out: 2511 if (abort) 2512 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 2513 mutex_unlock(&ep->com.mutex); 2514 c4iw_put_ep(&ep->com); 2515 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep); 2516 return err; 2517 } 2518 2519 static int 2520 c4iw_sock_create(struct sockaddr_storage *laddr, struct socket **so) 2521 { 2522 int ret; 2523 int size, on; 2524 struct socket *sock = NULL; 2525 struct sockopt sopt; 2526 2527 ret = sock_create_kern(laddr->ss_family, 2528 SOCK_STREAM, IPPROTO_TCP, &sock); 2529 if (ret) { 2530 CTR2(KTR_IW_CXGBE, "%s:Failed to create TCP socket. err %d", 2531 __func__, ret); 2532 return ret; 2533 } 2534 2535 if (reuseaddr) { 2536 bzero(&sopt, sizeof(struct sockopt)); 2537 sopt.sopt_dir = SOPT_SET; 2538 sopt.sopt_level = SOL_SOCKET; 2539 sopt.sopt_name = SO_REUSEADDR; 2540 on = 1; 2541 sopt.sopt_val = &on; 2542 sopt.sopt_valsize = sizeof(on); 2543 ret = -sosetopt(sock, &sopt); 2544 if (ret != 0) { 2545 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEADDR) " 2546 "failed with %d.\n", __func__, sock, ret); 2547 } 2548 bzero(&sopt, sizeof(struct sockopt)); 2549 sopt.sopt_dir = SOPT_SET; 2550 sopt.sopt_level = SOL_SOCKET; 2551 sopt.sopt_name = SO_REUSEPORT; 2552 on = 1; 2553 sopt.sopt_val = &on; 2554 sopt.sopt_valsize = sizeof(on); 2555 ret = -sosetopt(sock, &sopt); 2556 if (ret != 0) { 2557 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEPORT) " 2558 "failed with %d.\n", __func__, sock, ret); 2559 } 2560 } 2561 2562 ret = -sobind(sock, (struct sockaddr *)laddr, curthread); 2563 if (ret) { 2564 CTR2(KTR_IW_CXGBE, "%s:Failed to bind socket. err %p", 2565 __func__, ret); 2566 sock_release(sock); 2567 return ret; 2568 } 2569 2570 size = laddr->ss_family == AF_INET6 ? 2571 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 2572 ret = sock_getname(sock, (struct sockaddr *)laddr, &size, 0); 2573 if (ret) { 2574 CTR2(KTR_IW_CXGBE, "%s:sock_getname failed. err %p", 2575 __func__, ret); 2576 sock_release(sock); 2577 return ret; 2578 } 2579 2580 *so = sock; 2581 return 0; 2582 } 2583 2584 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2585 { 2586 int err = 0; 2587 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2588 struct c4iw_ep *ep = NULL; 2589 struct ifnet *nh_ifp; /* Logical egress interface */ 2590 struct epoch_tracker et; 2591 #ifdef VIMAGE 2592 struct rdma_cm_id *rdma_id = (struct rdma_cm_id*)cm_id->context; 2593 struct vnet *vnet = rdma_id->route.addr.dev_addr.net; 2594 #endif 2595 2596 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id); 2597 2598 2599 if ((conn_param->ord > c4iw_max_read_depth) || 2600 (conn_param->ird > c4iw_max_read_depth)) { 2601 2602 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id); 2603 err = -EINVAL; 2604 goto out; 2605 } 2606 ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2607 cm_id->provider_data = ep; 2608 2609 init_timer(&ep->timer); 2610 ep->plen = conn_param->private_data_len; 2611 2612 if (ep->plen) { 2613 2614 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep); 2615 memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 2616 conn_param->private_data, ep->plen); 2617 } 2618 ep->ird = conn_param->ird; 2619 ep->ord = conn_param->ord; 2620 2621 if (peer2peer && ep->ord == 0) { 2622 2623 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep); 2624 ep->ord = 1; 2625 } 2626 2627 ep->com.dev = dev; 2628 ep->com.cm_id = cm_id; 2629 ref_cm_id(&ep->com); 2630 ep->com.qp = get_qhp(dev, conn_param->qpn); 2631 2632 if (!ep->com.qp) { 2633 2634 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep); 2635 err = -EINVAL; 2636 goto fail; 2637 } 2638 ref_qp(ep); 2639 ep->com.thread = curthread; 2640 2641 NET_EPOCH_ENTER(et); 2642 CURVNET_SET(vnet); 2643 err = get_ifnet_from_raddr(&cm_id->remote_addr, &nh_ifp); 2644 CURVNET_RESTORE(); 2645 NET_EPOCH_EXIT(et); 2646 2647 if (err) { 2648 2649 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep); 2650 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 2651 err = EHOSTUNREACH; 2652 return err; 2653 } 2654 2655 if (!(nh_ifp->if_capenable & IFCAP_TOE) || 2656 TOEDEV(nh_ifp) == NULL) { 2657 err = -ENOPROTOOPT; 2658 goto fail; 2659 } 2660 ep->com.state = CONNECTING; 2661 ep->tos = 0; 2662 ep->com.local_addr = cm_id->local_addr; 2663 ep->com.remote_addr = cm_id->remote_addr; 2664 2665 err = c4iw_sock_create(&cm_id->local_addr, &ep->com.so); 2666 if (err) 2667 goto fail; 2668 2669 setiwsockopt(ep->com.so); 2670 init_iwarp_socket(ep->com.so, &ep->com); 2671 err = -soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr, 2672 ep->com.thread); 2673 if (err) 2674 goto fail_free_so; 2675 CTR2(KTR_IW_CXGBE, "%s:ccE, ep %p", __func__, ep); 2676 return 0; 2677 2678 fail_free_so: 2679 uninit_iwarp_socket(ep->com.so); 2680 ep->com.state = DEAD; 2681 sock_release(ep->com.so); 2682 fail: 2683 deref_cm_id(&ep->com); 2684 c4iw_put_ep(&ep->com); 2685 ep = NULL; 2686 out: 2687 CTR2(KTR_IW_CXGBE, "%s:ccE Error %d", __func__, err); 2688 return err; 2689 } 2690 2691 /* 2692 * iwcm->create_listen. Returns -errno on failure. 2693 */ 2694 int 2695 c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 2696 { 2697 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2698 struct c4iw_listen_ep *lep = NULL; 2699 struct listen_port_info *port_info = NULL; 2700 int rc = 0; 2701 2702 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, backlog %s", __func__, cm_id, 2703 backlog); 2704 if (c4iw_fatal_error(&dev->rdev)) { 2705 CTR2(KTR_IW_CXGBE, "%s: cm_id %p, fatal error", __func__, 2706 cm_id); 2707 return -EIO; 2708 } 2709 lep = alloc_ep(sizeof(*lep), GFP_KERNEL); 2710 lep->com.cm_id = cm_id; 2711 ref_cm_id(&lep->com); 2712 lep->com.dev = dev; 2713 lep->backlog = backlog; 2714 lep->com.local_addr = cm_id->local_addr; 2715 lep->com.thread = curthread; 2716 cm_id->provider_data = lep; 2717 lep->com.state = LISTEN; 2718 2719 /* In case of INDADDR_ANY, ibcore creates cmid for each device and 2720 * invokes iw_cxgbe listener callbacks assuming that iw_cxgbe creates 2721 * HW listeners for each device seperately. But toecore expects single 2722 * solisten() call with INADDR_ANY address to create HW listeners on 2723 * all devices for a given port number. So iw_cxgbe driver calls 2724 * solisten() only once for INADDR_ANY(usually done at first time 2725 * listener callback from ibcore). And all the subsequent INADDR_ANY 2726 * listener callbacks from ibcore(for the same port address) do not 2727 * invoke solisten() as first listener callback has already created 2728 * listeners for all other devices(via solisten). 2729 */ 2730 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr)) { 2731 port_info = add_ep_to_listenlist(lep); 2732 /* skip solisten() if refcnt > 1, as the listeners were 2733 * alredy created by 'Master lep' 2734 */ 2735 if (port_info->refcnt > 1) { 2736 /* As there will be only one listener socket for a TCP 2737 * port, copy Master lep's socket pointer to other lep's 2738 * that are belonging to same TCP port. 2739 */ 2740 struct c4iw_listen_ep *head_lep = 2741 container_of(port_info->lep_list.next, 2742 struct c4iw_listen_ep, listen_ep_list); 2743 lep->com.so = head_lep->com.so; 2744 goto out; 2745 } 2746 } 2747 rc = c4iw_sock_create(&cm_id->local_addr, &lep->com.so); 2748 if (rc) { 2749 CTR2(KTR_IW_CXGBE, "%s:Failed to create socket. err %d", 2750 __func__, rc); 2751 goto fail; 2752 } 2753 2754 rc = -solisten(lep->com.so, backlog, curthread); 2755 if (rc) { 2756 CTR3(KTR_IW_CXGBE, "%s:Failed to listen on sock:%p. err %d", 2757 __func__, lep->com.so, rc); 2758 goto fail_free_so; 2759 } 2760 init_iwarp_socket(lep->com.so, &lep->com); 2761 out: 2762 return 0; 2763 2764 fail_free_so: 2765 sock_release(lep->com.so); 2766 fail: 2767 if (port_info) 2768 rem_ep_from_listenlist(lep); 2769 deref_cm_id(&lep->com); 2770 c4iw_put_ep(&lep->com); 2771 return rc; 2772 } 2773 2774 int 2775 c4iw_destroy_listen(struct iw_cm_id *cm_id) 2776 { 2777 struct c4iw_listen_ep *lep = to_listen_ep(cm_id); 2778 2779 mutex_lock(&lep->com.mutex); 2780 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, state %s", __func__, cm_id, 2781 states[lep->com.state]); 2782 2783 lep->com.state = DEAD; 2784 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr)) { 2785 /* if no refcount then close listen socket */ 2786 if (!rem_ep_from_listenlist(lep)) 2787 close_socket(lep->com.so); 2788 } else 2789 close_socket(lep->com.so); 2790 deref_cm_id(&lep->com); 2791 mutex_unlock(&lep->com.mutex); 2792 c4iw_put_ep(&lep->com); 2793 return 0; 2794 } 2795 2796 int __c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2797 { 2798 int ret; 2799 mutex_lock(&ep->com.mutex); 2800 ret = c4iw_ep_disconnect(ep, abrupt, gfp); 2801 mutex_unlock(&ep->com.mutex); 2802 return ret; 2803 } 2804 2805 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2806 { 2807 int ret = 0; 2808 int close = 0; 2809 struct c4iw_rdev *rdev; 2810 2811 2812 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep); 2813 2814 rdev = &ep->com.dev->rdev; 2815 2816 if (c4iw_fatal_error(rdev)) { 2817 CTR3(KTR_IW_CXGBE, "%s:ced1 fatal error %p %s", __func__, ep, 2818 states[ep->com.state]); 2819 if (ep->com.state != DEAD) { 2820 send_abort(ep); 2821 ep->com.state = DEAD; 2822 } 2823 close_complete_upcall(ep, -ECONNRESET); 2824 return ECONNRESET; 2825 } 2826 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep, 2827 states[ep->com.state]); 2828 2829 /* 2830 * Ref the ep here in case we have fatal errors causing the 2831 * ep to be released and freed. 2832 */ 2833 c4iw_get_ep(&ep->com); 2834 switch (ep->com.state) { 2835 2836 case MPA_REQ_WAIT: 2837 case MPA_REQ_SENT: 2838 case MPA_REQ_RCVD: 2839 case MPA_REP_SENT: 2840 case FPDU_MODE: 2841 close = 1; 2842 if (abrupt) 2843 ep->com.state = ABORTING; 2844 else { 2845 ep->com.state = CLOSING; 2846 START_EP_TIMER(ep); 2847 } 2848 set_bit(CLOSE_SENT, &ep->com.flags); 2849 break; 2850 2851 case CLOSING: 2852 2853 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2854 2855 close = 1; 2856 if (abrupt) { 2857 STOP_EP_TIMER(ep); 2858 ep->com.state = ABORTING; 2859 } else 2860 ep->com.state = MORIBUND; 2861 } 2862 break; 2863 2864 case MORIBUND: 2865 case ABORTING: 2866 case DEAD: 2867 CTR3(KTR_IW_CXGBE, 2868 "%s ignoring disconnect ep %p state %u", __func__, 2869 ep, ep->com.state); 2870 break; 2871 2872 default: 2873 BUG(); 2874 break; 2875 } 2876 2877 2878 if (close) { 2879 2880 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep); 2881 2882 if (abrupt) { 2883 2884 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep); 2885 set_bit(EP_DISC_ABORT, &ep->com.history); 2886 close_complete_upcall(ep, -ECONNRESET); 2887 send_abort(ep); 2888 } else { 2889 2890 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep); 2891 set_bit(EP_DISC_CLOSE, &ep->com.history); 2892 2893 if (!ep->parent_ep) 2894 ep->com.state = MORIBUND; 2895 2896 CURVNET_SET(ep->com.so->so_vnet); 2897 ret = sodisconnect(ep->com.so); 2898 CURVNET_RESTORE(); 2899 if (ret) { 2900 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep); 2901 STOP_EP_TIMER(ep); 2902 send_abort(ep); 2903 ep->com.state = DEAD; 2904 close_complete_upcall(ep, -ECONNRESET); 2905 set_bit(EP_DISC_FAIL, &ep->com.history); 2906 if (ep->com.qp) { 2907 struct c4iw_qp_attributes attrs = {0}; 2908 2909 attrs.next_state = C4IW_QP_STATE_ERROR; 2910 ret = c4iw_modify_qp( 2911 ep->com.dev, ep->com.qp, 2912 C4IW_QP_ATTR_NEXT_STATE, 2913 &attrs, 1); 2914 CTR3(KTR_IW_CXGBE, "%s:ced7 %p ret %d", 2915 __func__, ep, ret); 2916 } 2917 } 2918 } 2919 } 2920 c4iw_put_ep(&ep->com); 2921 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep); 2922 return ret; 2923 } 2924 2925 #ifdef C4IW_EP_REDIRECT 2926 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, 2927 struct l2t_entry *l2t) 2928 { 2929 struct c4iw_ep *ep = ctx; 2930 2931 if (ep->dst != old) 2932 return 0; 2933 2934 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, 2935 l2t); 2936 dst_hold(new); 2937 cxgb4_l2t_release(ep->l2t); 2938 ep->l2t = l2t; 2939 dst_release(old); 2940 ep->dst = new; 2941 return 1; 2942 } 2943 #endif 2944 2945 2946 2947 static void ep_timeout(unsigned long arg) 2948 { 2949 struct c4iw_ep *ep = (struct c4iw_ep *)arg; 2950 2951 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 2952 2953 /* 2954 * Only insert if it is not already on the list. 2955 */ 2956 if (!(ep->com.ep_events & C4IW_EVENT_TIMEOUT)) { 2957 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep); 2958 add_ep_to_req_list(ep, C4IW_EVENT_TIMEOUT); 2959 } 2960 } 2961 } 2962 2963 static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl) 2964 { 2965 uint64_t val = be64toh(*rpl); 2966 int ret; 2967 struct c4iw_wr_wait *wr_waitp; 2968 2969 ret = (int)((val >> 8) & 0xff); 2970 wr_waitp = (struct c4iw_wr_wait *)rpl[1]; 2971 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret); 2972 if (wr_waitp) 2973 c4iw_wake_up(wr_waitp, ret ? -ret : 0); 2974 2975 return (0); 2976 } 2977 2978 static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl) 2979 { 2980 struct cqe_list_entry *cle; 2981 unsigned long flag; 2982 2983 cle = malloc(sizeof(*cle), M_CXGBE, M_NOWAIT); 2984 cle->rhp = sc->iwarp_softc; 2985 cle->err_cqe = *(const struct t4_cqe *)(&rpl[0]); 2986 2987 spin_lock_irqsave(&err_cqe_lock, flag); 2988 list_add_tail(&cle->entry, &err_cqe_list); 2989 queue_work(c4iw_taskq, &c4iw_task); 2990 spin_unlock_irqrestore(&err_cqe_lock, flag); 2991 2992 return (0); 2993 } 2994 2995 static int 2996 process_terminate(struct c4iw_ep *ep) 2997 { 2998 struct c4iw_qp_attributes attrs = {0}; 2999 3000 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep); 3001 3002 if (ep && ep->com.qp) { 3003 3004 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", 3005 ep->hwtid, ep->com.qp->wq.sq.qid); 3006 attrs.next_state = C4IW_QP_STATE_TERMINATE; 3007 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 3008 1); 3009 } else 3010 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", 3011 ep->hwtid); 3012 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep); 3013 3014 return 0; 3015 } 3016 3017 int __init c4iw_cm_init(void) 3018 { 3019 3020 t4_register_cpl_handler(CPL_RDMA_TERMINATE, terminate); 3021 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, fw6_wr_rpl); 3022 t4_register_fw_msg_handler(FW6_TYPE_CQE, fw6_cqe_handler); 3023 t4_register_an_handler(c4iw_ev_handler); 3024 3025 TAILQ_INIT(&req_list); 3026 spin_lock_init(&req_lock); 3027 INIT_LIST_HEAD(&err_cqe_list); 3028 spin_lock_init(&err_cqe_lock); 3029 3030 INIT_WORK(&c4iw_task, process_req); 3031 3032 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe"); 3033 if (!c4iw_taskq) 3034 return -ENOMEM; 3035 3036 return 0; 3037 } 3038 3039 void __exit c4iw_cm_term(void) 3040 { 3041 WARN_ON(!TAILQ_EMPTY(&req_list)); 3042 WARN_ON(!list_empty(&err_cqe_list)); 3043 flush_workqueue(c4iw_taskq); 3044 destroy_workqueue(c4iw_taskq); 3045 3046 t4_register_cpl_handler(CPL_RDMA_TERMINATE, NULL); 3047 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, NULL); 3048 t4_register_fw_msg_handler(FW6_TYPE_CQE, NULL); 3049 t4_register_an_handler(NULL); 3050 } 3051 #endif 3052