1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 #include "opt_inet.h" 36 37 #ifdef TCP_OFFLOAD 38 #include <sys/types.h> 39 #include <sys/malloc.h> 40 #include <sys/socket.h> 41 #include <sys/socketvar.h> 42 #include <sys/sockio.h> 43 #include <sys/taskqueue.h> 44 #include <netinet/in.h> 45 #include <net/route.h> 46 #include <net/route/nhop.h> 47 48 #include <netinet/in_systm.h> 49 #include <netinet/in_pcb.h> 50 #include <netinet6/in6_pcb.h> 51 #include <netinet/ip.h> 52 #include <netinet/in_fib.h> 53 #include <netinet6/in6_fib.h> 54 #include <netinet6/scope6_var.h> 55 #include <netinet/ip_var.h> 56 #include <netinet/tcp_var.h> 57 #include <netinet/tcp.h> 58 #include <netinet/tcpip.h> 59 60 #include <netinet/toecore.h> 61 62 struct sge_iq; 63 struct rss_header; 64 struct cpl_set_tcb_rpl; 65 #include <linux/types.h> 66 #include "offload.h" 67 #include "tom/t4_tom.h" 68 69 #define TOEPCB(so) ((struct toepcb *)(sototcpcb((so))->t_toe)) 70 71 #include "iw_cxgbe.h" 72 #include <linux/module.h> 73 #include <linux/workqueue.h> 74 #include <linux/if_vlan.h> 75 #include <net/netevent.h> 76 #include <rdma/rdma_cm.h> 77 78 static spinlock_t req_lock; 79 static TAILQ_HEAD(c4iw_ep_list, c4iw_ep_common) req_list; 80 static struct work_struct c4iw_task; 81 static struct workqueue_struct *c4iw_taskq; 82 static LIST_HEAD(err_cqe_list); 83 static spinlock_t err_cqe_lock; 84 static LIST_HEAD(listen_port_list); 85 static DEFINE_MUTEX(listen_port_mutex); 86 87 static void process_req(struct work_struct *ctx); 88 static void start_ep_timer(struct c4iw_ep *ep); 89 static int stop_ep_timer(struct c4iw_ep *ep); 90 static int set_tcpinfo(struct c4iw_ep *ep); 91 static void process_timeout(struct c4iw_ep *ep); 92 static void process_err_cqes(void); 93 static void *alloc_ep(int size, gfp_t flags); 94 static void close_socket(struct socket *so); 95 static int send_mpa_req(struct c4iw_ep *ep); 96 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen); 97 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen); 98 static void close_complete_upcall(struct c4iw_ep *ep, int status); 99 static int send_abort(struct c4iw_ep *ep); 100 static void peer_close_upcall(struct c4iw_ep *ep); 101 static void peer_abort_upcall(struct c4iw_ep *ep); 102 static void connect_reply_upcall(struct c4iw_ep *ep, int status); 103 static int connect_request_upcall(struct c4iw_ep *ep); 104 static void established_upcall(struct c4iw_ep *ep); 105 static int process_mpa_reply(struct c4iw_ep *ep); 106 static int process_mpa_request(struct c4iw_ep *ep); 107 static void process_peer_close(struct c4iw_ep *ep); 108 static void process_conn_error(struct c4iw_ep *ep); 109 static void process_close_complete(struct c4iw_ep *ep); 110 static void ep_timeout(unsigned long arg); 111 static void setiwsockopt(struct socket *so); 112 static void init_iwarp_socket(struct socket *so, void *arg); 113 static void uninit_iwarp_socket(struct socket *so); 114 static void process_data(struct c4iw_ep *ep); 115 static void process_connected(struct c4iw_ep *ep); 116 static int c4iw_so_upcall(struct socket *so, void *arg, int waitflag); 117 static void process_socket_event(struct c4iw_ep *ep); 118 static void release_ep_resources(struct c4iw_ep *ep); 119 static int process_terminate(struct c4iw_ep *ep); 120 static int terminate(struct sge_iq *iq, const struct rss_header *rss, 121 struct mbuf *m); 122 static int add_ep_to_req_list(struct c4iw_ep *ep, int ep_events); 123 static struct listen_port_info * 124 add_ep_to_listenlist(struct c4iw_listen_ep *lep); 125 static int rem_ep_from_listenlist(struct c4iw_listen_ep *lep); 126 static struct c4iw_listen_ep * 127 find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so); 128 static int get_ifnet_from_raddr(struct sockaddr_storage *raddr, 129 if_t *ifp); 130 static void process_newconn(struct c4iw_listen_ep *master_lep, 131 struct socket *new_so); 132 #define START_EP_TIMER(ep) \ 133 do { \ 134 CTR3(KTR_IW_CXGBE, "start_ep_timer (%s:%d) ep %p", \ 135 __func__, __LINE__, (ep)); \ 136 start_ep_timer(ep); \ 137 } while (0) 138 139 #define STOP_EP_TIMER(ep) \ 140 ({ \ 141 CTR3(KTR_IW_CXGBE, "stop_ep_timer (%s:%d) ep %p", \ 142 __func__, __LINE__, (ep)); \ 143 stop_ep_timer(ep); \ 144 }) 145 146 #define GET_LOCAL_ADDR(pladdr, so) \ 147 do { \ 148 struct sockaddr_storage *__a = NULL; \ 149 struct inpcb *__inp = sotoinpcb(so); \ 150 KASSERT(__inp != NULL, \ 151 ("GET_LOCAL_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 152 if (__inp->inp_vflag & INP_IPV4) \ 153 in_getsockaddr(so, (struct sockaddr **)&__a); \ 154 else \ 155 in6_getsockaddr(so, (struct sockaddr **)&__a); \ 156 *(pladdr) = *__a; \ 157 free(__a, M_SONAME); \ 158 } while (0) 159 160 #define GET_REMOTE_ADDR(praddr, so) \ 161 do { \ 162 struct sockaddr_storage *__a = NULL; \ 163 struct inpcb *__inp = sotoinpcb(so); \ 164 KASSERT(__inp != NULL, \ 165 ("GET_REMOTE_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 166 if (__inp->inp_vflag & INP_IPV4) \ 167 in_getpeeraddr(so, (struct sockaddr **)&__a); \ 168 else \ 169 in6_getpeeraddr(so, (struct sockaddr **)&__a); \ 170 *(praddr) = *__a; \ 171 free(__a, M_SONAME); \ 172 } while (0) 173 174 static char *states[] = { 175 "idle", 176 "listen", 177 "connecting", 178 "mpa_wait_req", 179 "mpa_req_sent", 180 "mpa_req_rcvd", 181 "mpa_rep_sent", 182 "fpdu_mode", 183 "aborting", 184 "closing", 185 "moribund", 186 "dead", 187 NULL, 188 }; 189 190 static void deref_cm_id(struct c4iw_ep_common *epc) 191 { 192 epc->cm_id->rem_ref(epc->cm_id); 193 epc->cm_id = NULL; 194 set_bit(CM_ID_DEREFED, &epc->history); 195 } 196 197 static void ref_cm_id(struct c4iw_ep_common *epc) 198 { 199 set_bit(CM_ID_REFED, &epc->history); 200 epc->cm_id->add_ref(epc->cm_id); 201 } 202 203 static void deref_qp(struct c4iw_ep *ep) 204 { 205 c4iw_qp_rem_ref(&ep->com.qp->ibqp); 206 clear_bit(QP_REFERENCED, &ep->com.flags); 207 set_bit(QP_DEREFED, &ep->com.history); 208 } 209 210 static void ref_qp(struct c4iw_ep *ep) 211 { 212 set_bit(QP_REFERENCED, &ep->com.flags); 213 set_bit(QP_REFED, &ep->com.history); 214 c4iw_qp_add_ref(&ep->com.qp->ibqp); 215 } 216 /* allocated per TCP port while listening */ 217 struct listen_port_info { 218 uint16_t port_num; /* TCP port address */ 219 struct list_head list; /* belongs to listen_port_list */ 220 struct list_head lep_list; /* per port lep list */ 221 uint32_t refcnt; /* number of lep's listening */ 222 }; 223 224 /* 225 * Following two lists are used to manage INADDR_ANY listeners: 226 * 1)listen_port_list 227 * 2)lep_list 228 * 229 * Below is the INADDR_ANY listener lists overview on a system with a two port 230 * adapter: 231 * |------------------| 232 * |listen_port_list | 233 * |------------------| 234 * | 235 * | |-----------| |-----------| 236 * | | port_num:X| | port_num:X| 237 * |--------------|-list------|-------|-list------|-------.... 238 * | lep_list----| | lep_list----| 239 * | refcnt | | | refcnt | | 240 * | | | | | | 241 * | | | | | | 242 * |-----------| | |-----------| | 243 * | | 244 * | | 245 * | | 246 * | | lep1 lep2 247 * | | |----------------| |----------------| 248 * | |----| listen_ep_list |----| listen_ep_list | 249 * | |----------------| |----------------| 250 * | 251 * | 252 * | lep1 lep2 253 * | |----------------| |----------------| 254 * |---| listen_ep_list |----| listen_ep_list | 255 * |----------------| |----------------| 256 * 257 * Because of two port adapter, the number of lep's are two(lep1 & lep2) for 258 * each TCP port number. 259 * 260 * Here 'lep1' is always marked as Master lep, because solisten() is always 261 * called through first lep. 262 * 263 */ 264 static struct listen_port_info * 265 add_ep_to_listenlist(struct c4iw_listen_ep *lep) 266 { 267 uint16_t port; 268 struct listen_port_info *port_info = NULL; 269 struct sockaddr_storage *laddr = &lep->com.local_addr; 270 271 port = (laddr->ss_family == AF_INET) ? 272 ((struct sockaddr_in *)laddr)->sin_port : 273 ((struct sockaddr_in6 *)laddr)->sin6_port; 274 275 mutex_lock(&listen_port_mutex); 276 277 list_for_each_entry(port_info, &listen_port_list, list) 278 if (port_info->port_num == port) 279 goto found_port; 280 281 port_info = malloc(sizeof(*port_info), M_CXGBE, M_WAITOK); 282 port_info->port_num = port; 283 port_info->refcnt = 0; 284 285 list_add_tail(&port_info->list, &listen_port_list); 286 INIT_LIST_HEAD(&port_info->lep_list); 287 288 found_port: 289 port_info->refcnt++; 290 list_add_tail(&lep->listen_ep_list, &port_info->lep_list); 291 mutex_unlock(&listen_port_mutex); 292 return port_info; 293 } 294 295 static int 296 rem_ep_from_listenlist(struct c4iw_listen_ep *lep) 297 { 298 uint16_t port; 299 struct listen_port_info *port_info = NULL; 300 struct sockaddr_storage *laddr = &lep->com.local_addr; 301 int refcnt = 0; 302 303 port = (laddr->ss_family == AF_INET) ? 304 ((struct sockaddr_in *)laddr)->sin_port : 305 ((struct sockaddr_in6 *)laddr)->sin6_port; 306 307 mutex_lock(&listen_port_mutex); 308 309 /* get the port_info structure based on the lep's port address */ 310 list_for_each_entry(port_info, &listen_port_list, list) { 311 if (port_info->port_num == port) { 312 port_info->refcnt--; 313 refcnt = port_info->refcnt; 314 /* remove the current lep from the listen list */ 315 list_del(&lep->listen_ep_list); 316 if (port_info->refcnt == 0) { 317 /* Remove this entry from the list as there 318 * are no more listeners for this port_num. 319 */ 320 list_del(&port_info->list); 321 kfree(port_info); 322 } 323 break; 324 } 325 } 326 mutex_unlock(&listen_port_mutex); 327 return refcnt; 328 } 329 330 /* 331 * Find the lep that belongs to the ifnet on which the SYN frame was received. 332 */ 333 struct c4iw_listen_ep * 334 find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so) 335 { 336 struct adapter *adap = NULL; 337 struct c4iw_listen_ep *lep = NULL; 338 if_t ifp = NULL, hw_ifp = NULL; 339 struct listen_port_info *port_info = NULL; 340 int i = 0, found_portinfo = 0, found_lep = 0; 341 uint16_t port; 342 343 /* 344 * STEP 1: Figure out 'ifp' of the physical interface, not pseudo 345 * interfaces like vlan, lagg, etc.. 346 * TBD: lagg support, lagg + vlan support. 347 */ 348 ifp = TOEPCB(so)->l2te->ifp; 349 if (if_gettype(ifp) == IFT_L2VLAN) { 350 hw_ifp = VLAN_TRUNKDEV(ifp); 351 if (hw_ifp == NULL) { 352 CTR4(KTR_IW_CXGBE, "%s: Failed to get parent ifnet of " 353 "vlan ifnet %p, sock %p, master_lep %p", 354 __func__, ifp, so, master_lep); 355 return (NULL); 356 } 357 } else 358 hw_ifp = ifp; 359 360 /* STEP 2: Find 'port_info' with listener local port address. */ 361 port = (master_lep->com.local_addr.ss_family == AF_INET) ? 362 ((struct sockaddr_in *)&master_lep->com.local_addr)->sin_port : 363 ((struct sockaddr_in6 *)&master_lep->com.local_addr)->sin6_port; 364 365 366 mutex_lock(&listen_port_mutex); 367 list_for_each_entry(port_info, &listen_port_list, list) 368 if (port_info->port_num == port) { 369 found_portinfo =1; 370 break; 371 } 372 if (!found_portinfo) 373 goto out; 374 375 /* STEP 3: Traverse through list of lep's that are bound to the current 376 * TCP port address and find the lep that belongs to the ifnet on which 377 * the SYN frame was received. 378 */ 379 list_for_each_entry(lep, &port_info->lep_list, listen_ep_list) { 380 adap = lep->com.dev->rdev.adap; 381 for_each_port(adap, i) { 382 if (hw_ifp == adap->port[i]->vi[0].ifp) { 383 found_lep =1; 384 goto out; 385 } 386 } 387 } 388 out: 389 mutex_unlock(&listen_port_mutex); 390 return found_lep ? lep : (NULL); 391 } 392 393 static void process_timeout(struct c4iw_ep *ep) 394 { 395 struct c4iw_qp_attributes attrs = {0}; 396 int abort = 1; 397 398 CTR4(KTR_IW_CXGBE, "%s ep :%p, tid:%u, state %d", __func__, 399 ep, ep->hwtid, ep->com.state); 400 set_bit(TIMEDOUT, &ep->com.history); 401 switch (ep->com.state) { 402 case MPA_REQ_SENT: 403 connect_reply_upcall(ep, -ETIMEDOUT); 404 break; 405 case MPA_REQ_WAIT: 406 case MPA_REQ_RCVD: 407 case MPA_REP_SENT: 408 case FPDU_MODE: 409 break; 410 case CLOSING: 411 case MORIBUND: 412 if (ep->com.cm_id && ep->com.qp) { 413 attrs.next_state = C4IW_QP_STATE_ERROR; 414 c4iw_modify_qp(ep->com.dev, ep->com.qp, 415 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 416 } 417 close_complete_upcall(ep, -ETIMEDOUT); 418 break; 419 case ABORTING: 420 case DEAD: 421 /* 422 * These states are expected if the ep timed out at the same 423 * time as another thread was calling stop_ep_timer(). 424 * So we silently do nothing for these states. 425 */ 426 abort = 0; 427 break; 428 default: 429 CTR4(KTR_IW_CXGBE, "%s unexpected state ep %p tid %u state %u" 430 , __func__, ep, ep->hwtid, ep->com.state); 431 abort = 0; 432 } 433 if (abort) 434 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 435 c4iw_put_ep(&ep->com); 436 return; 437 } 438 439 struct cqe_list_entry { 440 struct list_head entry; 441 struct c4iw_dev *rhp; 442 struct t4_cqe err_cqe; 443 }; 444 445 static void 446 process_err_cqes(void) 447 { 448 unsigned long flag; 449 struct cqe_list_entry *cle; 450 451 spin_lock_irqsave(&err_cqe_lock, flag); 452 while (!list_empty(&err_cqe_list)) { 453 struct list_head *tmp; 454 tmp = err_cqe_list.next; 455 list_del(tmp); 456 tmp->next = tmp->prev = NULL; 457 spin_unlock_irqrestore(&err_cqe_lock, flag); 458 cle = list_entry(tmp, struct cqe_list_entry, entry); 459 c4iw_ev_dispatch(cle->rhp, &cle->err_cqe); 460 free(cle, M_CXGBE); 461 spin_lock_irqsave(&err_cqe_lock, flag); 462 } 463 spin_unlock_irqrestore(&err_cqe_lock, flag); 464 465 return; 466 } 467 468 static void 469 process_req(struct work_struct *ctx) 470 { 471 struct c4iw_ep_common *epc; 472 unsigned long flag; 473 int ep_events; 474 475 process_err_cqes(); 476 spin_lock_irqsave(&req_lock, flag); 477 while (!TAILQ_EMPTY(&req_list)) { 478 epc = TAILQ_FIRST(&req_list); 479 TAILQ_REMOVE(&req_list, epc, entry); 480 epc->entry.tqe_prev = NULL; 481 ep_events = epc->ep_events; 482 epc->ep_events = 0; 483 spin_unlock_irqrestore(&req_lock, flag); 484 mutex_lock(&epc->mutex); 485 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, ep_state %s events 0x%x", 486 __func__, epc->so, epc, states[epc->state], ep_events); 487 if (ep_events & C4IW_EVENT_TERM) 488 process_terminate((struct c4iw_ep *)epc); 489 if (ep_events & C4IW_EVENT_TIMEOUT) 490 process_timeout((struct c4iw_ep *)epc); 491 if (ep_events & C4IW_EVENT_SOCKET) 492 process_socket_event((struct c4iw_ep *)epc); 493 mutex_unlock(&epc->mutex); 494 c4iw_put_ep(epc); 495 process_err_cqes(); 496 spin_lock_irqsave(&req_lock, flag); 497 } 498 spin_unlock_irqrestore(&req_lock, flag); 499 } 500 501 /* 502 * XXX: doesn't belong here in the iWARP driver. 503 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is 504 * set. Is this a valid assumption for active open? 505 */ 506 static int 507 set_tcpinfo(struct c4iw_ep *ep) 508 { 509 struct socket *so = ep->com.so; 510 struct inpcb *inp = sotoinpcb(so); 511 struct tcpcb *tp; 512 struct toepcb *toep; 513 int rc = 0; 514 515 INP_WLOCK(inp); 516 tp = intotcpcb(inp); 517 if ((tp->t_flags & TF_TOE) == 0) { 518 rc = EINVAL; 519 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n", 520 __func__, so, ep); 521 goto done; 522 } 523 toep = TOEPCB(so); 524 525 ep->hwtid = toep->tid; 526 ep->snd_seq = tp->snd_nxt; 527 ep->rcv_seq = tp->rcv_nxt; 528 done: 529 INP_WUNLOCK(inp); 530 return (rc); 531 532 } 533 static int 534 get_ifnet_from_raddr(struct sockaddr_storage *raddr, if_t *ifp) 535 { 536 int err = 0; 537 struct nhop_object *nh; 538 539 if (raddr->ss_family == AF_INET) { 540 struct sockaddr_in *raddr4 = (struct sockaddr_in *)raddr; 541 542 nh = fib4_lookup(RT_DEFAULT_FIB, raddr4->sin_addr, 0, 543 NHR_NONE, 0); 544 } else { 545 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)raddr; 546 struct in6_addr addr6; 547 uint32_t scopeid; 548 549 memset(&addr6, 0, sizeof(addr6)); 550 in6_splitscope((struct in6_addr *)&raddr6->sin6_addr, 551 &addr6, &scopeid); 552 nh = fib6_lookup(RT_DEFAULT_FIB, &addr6, scopeid, 553 NHR_NONE, 0); 554 } 555 556 if (nh == NULL) 557 err = EHOSTUNREACH; 558 else 559 *ifp = nh->nh_ifp; 560 CTR2(KTR_IW_CXGBE, "%s: return: %d", __func__, err); 561 return err; 562 } 563 564 static void 565 close_socket(struct socket *so) 566 { 567 uninit_iwarp_socket(so); 568 soclose(so); 569 } 570 571 static void 572 process_peer_close(struct c4iw_ep *ep) 573 { 574 struct c4iw_qp_attributes attrs = {0}; 575 int disconnect = 1; 576 int release = 0; 577 578 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep, 579 ep->com.so, states[ep->com.state]); 580 581 switch (ep->com.state) { 582 583 case MPA_REQ_WAIT: 584 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT DEAD", 585 __func__, ep); 586 /* Fallthrough */ 587 case MPA_REQ_SENT: 588 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT DEAD", 589 __func__, ep); 590 ep->com.state = DEAD; 591 connect_reply_upcall(ep, -ECONNABORTED); 592 593 disconnect = 0; 594 STOP_EP_TIMER(ep); 595 close_socket(ep->com.so); 596 deref_cm_id(&ep->com); 597 release = 1; 598 break; 599 600 case MPA_REQ_RCVD: 601 602 /* 603 * We're gonna mark this puppy DEAD, but keep 604 * the reference on it until the ULP accepts or 605 * rejects the CR. 606 */ 607 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING", 608 __func__, ep); 609 ep->com.state = CLOSING; 610 break; 611 612 case MPA_REP_SENT: 613 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING", 614 __func__, ep); 615 ep->com.state = CLOSING; 616 break; 617 618 case FPDU_MODE: 619 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING", 620 __func__, ep); 621 START_EP_TIMER(ep); 622 ep->com.state = CLOSING; 623 attrs.next_state = C4IW_QP_STATE_CLOSING; 624 c4iw_modify_qp(ep->com.dev, ep->com.qp, 625 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 626 peer_close_upcall(ep); 627 break; 628 629 case ABORTING: 630 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)", 631 __func__, ep); 632 disconnect = 0; 633 break; 634 635 case CLOSING: 636 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND", 637 __func__, ep); 638 ep->com.state = MORIBUND; 639 disconnect = 0; 640 break; 641 642 case MORIBUND: 643 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__, 644 ep); 645 STOP_EP_TIMER(ep); 646 if (ep->com.cm_id && ep->com.qp) { 647 attrs.next_state = C4IW_QP_STATE_IDLE; 648 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 649 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 650 } 651 close_socket(ep->com.so); 652 close_complete_upcall(ep, 0); 653 ep->com.state = DEAD; 654 release = 1; 655 disconnect = 0; 656 break; 657 658 case DEAD: 659 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)", 660 __func__, ep); 661 disconnect = 0; 662 break; 663 664 default: 665 panic("%s: ep %p state %d", __func__, ep, 666 ep->com.state); 667 break; 668 } 669 670 671 if (disconnect) { 672 673 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep); 674 c4iw_ep_disconnect(ep, 0, M_NOWAIT); 675 } 676 if (release) { 677 678 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep); 679 c4iw_put_ep(&ep->com); 680 } 681 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep); 682 return; 683 } 684 685 static void 686 process_conn_error(struct c4iw_ep *ep) 687 { 688 struct c4iw_qp_attributes attrs = {0}; 689 int ret; 690 int state; 691 692 state = ep->com.state; 693 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s", 694 __func__, ep, ep->com.so, ep->com.so->so_error, 695 states[ep->com.state]); 696 697 switch (state) { 698 699 case MPA_REQ_WAIT: 700 STOP_EP_TIMER(ep); 701 c4iw_put_ep(&ep->parent_ep->com); 702 break; 703 704 case MPA_REQ_SENT: 705 STOP_EP_TIMER(ep); 706 connect_reply_upcall(ep, -ECONNRESET); 707 break; 708 709 case MPA_REP_SENT: 710 ep->com.rpl_err = ECONNRESET; 711 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep); 712 break; 713 714 case MPA_REQ_RCVD: 715 break; 716 717 case MORIBUND: 718 case CLOSING: 719 STOP_EP_TIMER(ep); 720 /*FALLTHROUGH*/ 721 case FPDU_MODE: 722 723 if (ep->com.cm_id && ep->com.qp) { 724 725 attrs.next_state = C4IW_QP_STATE_ERROR; 726 ret = c4iw_modify_qp(ep->com.qp->rhp, 727 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 728 &attrs, 1); 729 if (ret) 730 log(LOG_ERR, 731 "%s - qp <- error failed!\n", 732 __func__); 733 } 734 peer_abort_upcall(ep); 735 break; 736 737 case ABORTING: 738 break; 739 740 case DEAD: 741 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!", 742 __func__, ep->com.so->so_error); 743 return; 744 745 default: 746 panic("%s: ep %p state %d", __func__, ep, state); 747 break; 748 } 749 750 if (state != ABORTING) { 751 close_socket(ep->com.so); 752 ep->com.state = DEAD; 753 c4iw_put_ep(&ep->com); 754 } 755 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep); 756 return; 757 } 758 759 static void 760 process_close_complete(struct c4iw_ep *ep) 761 { 762 struct c4iw_qp_attributes attrs = {0}; 763 int release = 0; 764 765 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep, 766 ep->com.so, states[ep->com.state]); 767 768 /* The cm_id may be null if we failed to connect */ 769 set_bit(CLOSE_CON_RPL, &ep->com.history); 770 771 switch (ep->com.state) { 772 773 case CLOSING: 774 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND", 775 __func__, ep); 776 ep->com.state = MORIBUND; 777 break; 778 779 case MORIBUND: 780 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__, 781 ep); 782 STOP_EP_TIMER(ep); 783 784 if ((ep->com.cm_id) && (ep->com.qp)) { 785 786 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE", 787 __func__, ep); 788 attrs.next_state = C4IW_QP_STATE_IDLE; 789 c4iw_modify_qp(ep->com.dev, 790 ep->com.qp, 791 C4IW_QP_ATTR_NEXT_STATE, 792 &attrs, 1); 793 } 794 795 close_socket(ep->com.so); 796 close_complete_upcall(ep, 0); 797 ep->com.state = DEAD; 798 release = 1; 799 break; 800 801 case ABORTING: 802 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep); 803 break; 804 805 case DEAD: 806 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep); 807 break; 808 default: 809 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p unknown ep state", 810 __func__, ep); 811 panic("%s:pcc6 %p unknown ep state", __func__, ep); 812 break; 813 } 814 815 if (release) { 816 817 CTR2(KTR_IW_CXGBE, "%s:pcc8 %p", __func__, ep); 818 release_ep_resources(ep); 819 } 820 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep); 821 return; 822 } 823 824 static void 825 setiwsockopt(struct socket *so) 826 { 827 int rc; 828 struct sockopt sopt; 829 int on = 1; 830 831 sopt.sopt_dir = SOPT_SET; 832 sopt.sopt_level = IPPROTO_TCP; 833 sopt.sopt_name = TCP_NODELAY; 834 sopt.sopt_val = (caddr_t)&on; 835 sopt.sopt_valsize = sizeof on; 836 sopt.sopt_td = NULL; 837 rc = -sosetopt(so, &sopt); 838 if (rc) { 839 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n", 840 __func__, so, rc); 841 } 842 } 843 844 static void 845 init_iwarp_socket(struct socket *so, void *arg) 846 { 847 if (SOLISTENING(so)) { 848 SOLISTEN_LOCK(so); 849 solisten_upcall_set(so, c4iw_so_upcall, arg); 850 so->so_state |= SS_NBIO; 851 SOLISTEN_UNLOCK(so); 852 } else { 853 SOCKBUF_LOCK(&so->so_rcv); 854 soupcall_set(so, SO_RCV, c4iw_so_upcall, arg); 855 so->so_state |= SS_NBIO; 856 SOCKBUF_UNLOCK(&so->so_rcv); 857 } 858 } 859 860 static void 861 uninit_iwarp_socket(struct socket *so) 862 { 863 if (SOLISTENING(so)) { 864 SOLISTEN_LOCK(so); 865 solisten_upcall_set(so, NULL, NULL); 866 SOLISTEN_UNLOCK(so); 867 } else { 868 SOCKBUF_LOCK(&so->so_rcv); 869 soupcall_clear(so, SO_RCV); 870 SOCKBUF_UNLOCK(&so->so_rcv); 871 } 872 } 873 874 static void 875 process_data(struct c4iw_ep *ep) 876 { 877 int ret = 0; 878 int disconnect = 0; 879 struct c4iw_qp_attributes attrs = {0}; 880 881 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sbused %d", __func__, 882 ep->com.so, ep, states[ep->com.state], sbused(&ep->com.so->so_rcv)); 883 884 switch (ep->com.state) { 885 case MPA_REQ_SENT: 886 disconnect = process_mpa_reply(ep); 887 break; 888 case MPA_REQ_WAIT: 889 disconnect = process_mpa_request(ep); 890 if (disconnect) 891 /* Refered in process_newconn() */ 892 c4iw_put_ep(&ep->parent_ep->com); 893 break; 894 case FPDU_MODE: 895 MPASS(ep->com.qp != NULL); 896 attrs.next_state = C4IW_QP_STATE_TERMINATE; 897 ret = c4iw_modify_qp(ep->com.dev, ep->com.qp, 898 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 899 if (ret != -EINPROGRESS) 900 disconnect = 1; 901 break; 902 default: 903 log(LOG_ERR, "%s: Unexpected streaming data. ep %p, " 904 "state %d, so %p, so_state 0x%x, sbused %u\n", 905 __func__, ep, ep->com.state, ep->com.so, 906 ep->com.so->so_state, sbused(&ep->com.so->so_rcv)); 907 break; 908 } 909 if (disconnect) 910 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); 911 912 } 913 914 static void 915 process_connected(struct c4iw_ep *ep) 916 { 917 struct socket *so = ep->com.so; 918 919 if ((so->so_state & SS_ISCONNECTED) && !so->so_error) { 920 if (send_mpa_req(ep)) 921 goto err; 922 } else { 923 connect_reply_upcall(ep, -so->so_error); 924 goto err; 925 } 926 return; 927 err: 928 close_socket(so); 929 ep->com.state = DEAD; 930 c4iw_put_ep(&ep->com); 931 return; 932 } 933 934 static inline bool c4iw_zero_addr(struct sockaddr *addr) 935 { 936 struct in6_addr *ip6; 937 938 if (addr->sa_family == AF_INET) 939 return (((struct sockaddr_in *)addr)->sin_addr.s_addr == 0); 940 else { 941 ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; 942 return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | 943 ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; 944 } 945 } 946 947 #define _IN_LOOPBACK(i) (((in_addr_t)(i) & 0xff000000) == 0x7f000000) 948 static inline bool c4iw_loopback_addr(struct sockaddr *addr, struct vnet *vnet) 949 { 950 bool ret; 951 952 if (addr->sa_family == AF_INET) { 953 if (vnet == NULL) 954 ret = _IN_LOOPBACK(ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 955 else { 956 CURVNET_SET_QUIET(vnet); 957 ret = IN_LOOPBACK(ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 958 CURVNET_RESTORE(); 959 } 960 } else { 961 ret = IN6_IS_ADDR_LOOPBACK(&((struct sockaddr_in6 *) addr)->sin6_addr); 962 } 963 return (ret); 964 } 965 #undef _IN_LOOPBACK 966 967 static inline bool c4iw_any_addr(struct sockaddr *addr, struct vnet *vnet) 968 { 969 return c4iw_zero_addr(addr) || c4iw_loopback_addr(addr, vnet); 970 } 971 972 static void 973 process_newconn(struct c4iw_listen_ep *master_lep, struct socket *new_so) 974 { 975 struct c4iw_listen_ep *real_lep = NULL; 976 struct c4iw_ep *new_ep = NULL; 977 struct sockaddr_in *remote = NULL; 978 int ret = 0; 979 980 MPASS(new_so != NULL); 981 982 if (c4iw_any_addr((struct sockaddr *)&master_lep->com.local_addr, 983 new_so->so_vnet)) { 984 /* Here we need to find the 'real_lep' that belongs to the 985 * incomming socket's network interface, such that the newly 986 * created 'ep' can be attached to the real 'lep'. 987 */ 988 real_lep = find_real_listen_ep(master_lep, new_so); 989 if (real_lep == NULL) { 990 CTR2(KTR_IW_CXGBE, "%s: Could not find the real listen " 991 "ep for sock: %p", __func__, new_so); 992 log(LOG_ERR,"%s: Could not find the real listen ep for " 993 "sock: %p\n", __func__, new_so); 994 /* FIXME: properly free the 'new_so' in failure case. 995 * Use of soabort() and soclose() are not legal 996 * here(before soaccept()). 997 */ 998 return; 999 } 1000 } else /* for Non-Wildcard address, master_lep is always the real_lep */ 1001 real_lep = master_lep; 1002 1003 new_ep = alloc_ep(sizeof(*new_ep), GFP_KERNEL); 1004 1005 CTR6(KTR_IW_CXGBE, "%s: master_lep %p, real_lep: %p, new ep %p, " 1006 "listening so %p, new so %p", __func__, master_lep, real_lep, 1007 new_ep, master_lep->com.so, new_so); 1008 1009 new_ep->com.dev = real_lep->com.dev; 1010 new_ep->com.so = new_so; 1011 new_ep->com.cm_id = NULL; 1012 new_ep->com.thread = real_lep->com.thread; 1013 new_ep->parent_ep = real_lep; 1014 1015 GET_LOCAL_ADDR(&new_ep->com.local_addr, new_so); 1016 GET_REMOTE_ADDR(&new_ep->com.remote_addr, new_so); 1017 c4iw_get_ep(&real_lep->com); 1018 init_timer(&new_ep->timer); 1019 new_ep->com.state = MPA_REQ_WAIT; 1020 1021 setiwsockopt(new_so); 1022 ret = soaccept(new_so, (struct sockaddr **)&remote); 1023 if (ret != 0) { 1024 CTR4(KTR_IW_CXGBE, 1025 "%s:listen sock:%p, new sock:%p, ret:%d", 1026 __func__, master_lep->com.so, new_so, ret); 1027 if (remote != NULL) 1028 free(remote, M_SONAME); 1029 soclose(new_so); 1030 c4iw_put_ep(&new_ep->com); 1031 c4iw_put_ep(&real_lep->com); 1032 return; 1033 } 1034 free(remote, M_SONAME); 1035 1036 START_EP_TIMER(new_ep); 1037 1038 /* MPA request might have been queued up on the socket already, so we 1039 * initialize the socket/upcall_handler under lock to prevent processing 1040 * MPA request on another thread(via process_req()) simultaneously. 1041 */ 1042 c4iw_get_ep(&new_ep->com); /* Dereferenced at the end below, this is to 1043 avoid freeing of ep before ep unlock. */ 1044 mutex_lock(&new_ep->com.mutex); 1045 init_iwarp_socket(new_so, &new_ep->com); 1046 1047 ret = process_mpa_request(new_ep); 1048 if (ret) { 1049 /* ABORT */ 1050 c4iw_ep_disconnect(new_ep, 1, GFP_KERNEL); 1051 c4iw_put_ep(&real_lep->com); 1052 } 1053 mutex_unlock(&new_ep->com.mutex); 1054 c4iw_put_ep(&new_ep->com); 1055 return; 1056 } 1057 1058 static int 1059 add_ep_to_req_list(struct c4iw_ep *ep, int new_ep_event) 1060 { 1061 unsigned long flag; 1062 1063 spin_lock_irqsave(&req_lock, flag); 1064 if (ep && ep->com.so) { 1065 ep->com.ep_events |= new_ep_event; 1066 if (!ep->com.entry.tqe_prev) { 1067 c4iw_get_ep(&ep->com); 1068 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry); 1069 queue_work(c4iw_taskq, &c4iw_task); 1070 } 1071 } 1072 spin_unlock_irqrestore(&req_lock, flag); 1073 1074 return (0); 1075 } 1076 1077 static int 1078 c4iw_so_upcall(struct socket *so, void *arg, int waitflag) 1079 { 1080 struct c4iw_ep *ep = arg; 1081 1082 CTR6(KTR_IW_CXGBE, 1083 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p", 1084 __func__, so, so->so_state, ep, states[ep->com.state], 1085 ep->com.entry.tqe_prev); 1086 1087 MPASS(ep->com.so == so); 1088 /* 1089 * Wake up any threads waiting in rdma_init()/rdma_fini(), 1090 * with locks held. 1091 */ 1092 if (so->so_error || (ep->com.dev->rdev.flags & T4_FATAL_ERROR)) 1093 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 1094 add_ep_to_req_list(ep, C4IW_EVENT_SOCKET); 1095 1096 return (SU_OK); 1097 } 1098 1099 1100 static int 1101 terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) 1102 { 1103 struct adapter *sc = iq->adapter; 1104 const struct cpl_rdma_terminate *cpl = mtod(m, const void *); 1105 unsigned int tid = GET_TID(cpl); 1106 struct toepcb *toep = lookup_tid(sc, tid); 1107 struct socket *so; 1108 struct c4iw_ep *ep; 1109 1110 INP_WLOCK(toep->inp); 1111 so = inp_inpcbtosocket(toep->inp); 1112 ep = so->so_rcv.sb_upcallarg; 1113 INP_WUNLOCK(toep->inp); 1114 1115 CTR3(KTR_IW_CXGBE, "%s: so %p, ep %p", __func__, so, ep); 1116 add_ep_to_req_list(ep, C4IW_EVENT_TERM); 1117 1118 return 0; 1119 } 1120 1121 static void 1122 process_socket_event(struct c4iw_ep *ep) 1123 { 1124 int state = ep->com.state; 1125 struct socket *so = ep->com.so; 1126 1127 if (ep->com.state == DEAD) { 1128 CTR3(KTR_IW_CXGBE, "%s: Pending socket event discarded " 1129 "ep %p ep_state %s", __func__, ep, states[state]); 1130 return; 1131 } 1132 1133 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, " 1134 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state, 1135 so->so_error, so->so_rcv.sb_state, ep, states[state]); 1136 1137 if (state == CONNECTING) { 1138 process_connected(ep); 1139 return; 1140 } 1141 1142 if (state == LISTEN) { 1143 struct c4iw_listen_ep *lep = (struct c4iw_listen_ep *)ep; 1144 struct socket *listen_so = so, *new_so = NULL; 1145 int error = 0; 1146 1147 SOLISTEN_LOCK(listen_so); 1148 do { 1149 error = solisten_dequeue(listen_so, &new_so, 1150 SOCK_NONBLOCK); 1151 if (error) { 1152 CTR4(KTR_IW_CXGBE, "%s: lep %p listen_so %p " 1153 "error %d", __func__, lep, listen_so, 1154 error); 1155 return; 1156 } 1157 process_newconn(lep, new_so); 1158 1159 /* solisten_dequeue() unlocks while return, so aquire 1160 * lock again for sol_qlen and also for next iteration. 1161 */ 1162 SOLISTEN_LOCK(listen_so); 1163 } while (listen_so->sol_qlen); 1164 SOLISTEN_UNLOCK(listen_so); 1165 1166 return; 1167 } 1168 1169 /* connection error */ 1170 if (so->so_error) { 1171 process_conn_error(ep); 1172 return; 1173 } 1174 1175 /* peer close */ 1176 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state <= CLOSING) { 1177 process_peer_close(ep); 1178 /* 1179 * check whether socket disconnect event is pending before 1180 * returning. Fallthrough if yes. 1181 */ 1182 if (!(so->so_state & SS_ISDISCONNECTED)) 1183 return; 1184 } 1185 1186 /* close complete */ 1187 if (so->so_state & SS_ISDISCONNECTED) { 1188 process_close_complete(ep); 1189 return; 1190 } 1191 1192 /* rx data */ 1193 if (sbused(&ep->com.so->so_rcv)) { 1194 process_data(ep); 1195 return; 1196 } 1197 1198 /* Socket events for 'MPA Request Received' and 'Close Complete' 1199 * were already processed earlier in their previous events handlers. 1200 * Hence, these socket events are skipped. 1201 * And any other socket events must have handled above. 1202 */ 1203 MPASS((ep->com.state == MPA_REQ_RCVD) || (ep->com.state == MORIBUND)); 1204 1205 if ((ep->com.state != MPA_REQ_RCVD) && (ep->com.state != MORIBUND)) 1206 log(LOG_ERR, "%s: Unprocessed socket event so %p, " 1207 "so_state 0x%x, so_err %d, sb_state 0x%x, ep %p, ep_state %s\n", 1208 __func__, so, so->so_state, so->so_error, so->so_rcv.sb_state, 1209 ep, states[state]); 1210 1211 } 1212 1213 SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 1214 "iw_cxgbe driver parameters"); 1215 1216 static int dack_mode = 0; 1217 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RWTUN, &dack_mode, 0, 1218 "Delayed ack mode (default = 0)"); 1219 1220 int c4iw_max_read_depth = 8; 1221 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RWTUN, &c4iw_max_read_depth, 0, 1222 "Per-connection max ORD/IRD (default = 8)"); 1223 1224 static int enable_tcp_timestamps; 1225 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RWTUN, &enable_tcp_timestamps, 0, 1226 "Enable tcp timestamps (default = 0)"); 1227 1228 static int enable_tcp_sack; 1229 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RWTUN, &enable_tcp_sack, 0, 1230 "Enable tcp SACK (default = 0)"); 1231 1232 static int enable_tcp_window_scaling = 1; 1233 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RWTUN, &enable_tcp_window_scaling, 0, 1234 "Enable tcp window scaling (default = 1)"); 1235 1236 int c4iw_debug = 0; 1237 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RWTUN, &c4iw_debug, 0, 1238 "Enable debug logging (default = 0)"); 1239 1240 static int peer2peer = 1; 1241 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RWTUN, &peer2peer, 0, 1242 "Support peer2peer ULPs (default = 1)"); 1243 1244 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 1245 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RWTUN, &p2p_type, 0, 1246 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)"); 1247 1248 static int ep_timeout_secs = 60; 1249 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RWTUN, &ep_timeout_secs, 0, 1250 "CM Endpoint operation timeout in seconds (default = 60)"); 1251 1252 static int mpa_rev = 1; 1253 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RWTUN, &mpa_rev, 0, 1254 "MPA Revision, 0 supports amso1100, 1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)"); 1255 1256 static int markers_enabled; 1257 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RWTUN, &markers_enabled, 0, 1258 "Enable MPA MARKERS (default(0) = disabled)"); 1259 1260 static int crc_enabled = 1; 1261 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RWTUN, &crc_enabled, 0, 1262 "Enable MPA CRC (default(1) = enabled)"); 1263 1264 static int rcv_win = 256 * 1024; 1265 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RWTUN, &rcv_win, 0, 1266 "TCP receive window in bytes (default = 256KB)"); 1267 1268 static int snd_win = 128 * 1024; 1269 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RWTUN, &snd_win, 0, 1270 "TCP send window in bytes (default = 128KB)"); 1271 1272 int use_dsgl = 1; 1273 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, use_dsgl, CTLFLAG_RWTUN, &use_dsgl, 0, 1274 "Use DSGL for PBL/FastReg (default=1)"); 1275 1276 int inline_threshold = 128; 1277 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, inline_threshold, CTLFLAG_RWTUN, &inline_threshold, 0, 1278 "inline vs dsgl threshold (default=128)"); 1279 1280 static int reuseaddr = 0; 1281 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, reuseaddr, CTLFLAG_RWTUN, &reuseaddr, 0, 1282 "Enable SO_REUSEADDR & SO_REUSEPORT socket options on all iWARP client connections(default = 0)"); 1283 1284 static void 1285 start_ep_timer(struct c4iw_ep *ep) 1286 { 1287 1288 if (timer_pending(&ep->timer)) { 1289 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep); 1290 printk(KERN_ERR "%s timer already started! ep %p\n", __func__, 1291 ep); 1292 return; 1293 } 1294 clear_bit(TIMEOUT, &ep->com.flags); 1295 c4iw_get_ep(&ep->com); 1296 ep->timer.expires = jiffies + ep_timeout_secs * HZ; 1297 ep->timer.data = (unsigned long)ep; 1298 ep->timer.function = ep_timeout; 1299 add_timer(&ep->timer); 1300 } 1301 1302 static int 1303 stop_ep_timer(struct c4iw_ep *ep) 1304 { 1305 1306 del_timer_sync(&ep->timer); 1307 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 1308 c4iw_put_ep(&ep->com); 1309 return 0; 1310 } 1311 return 1; 1312 } 1313 1314 static void * 1315 alloc_ep(int size, gfp_t gfp) 1316 { 1317 struct c4iw_ep_common *epc; 1318 1319 epc = kzalloc(size, gfp); 1320 if (epc == NULL) 1321 return (NULL); 1322 1323 kref_init(&epc->kref); 1324 mutex_init(&epc->mutex); 1325 c4iw_init_wr_wait(&epc->wr_wait); 1326 1327 return (epc); 1328 } 1329 1330 void _c4iw_free_ep(struct kref *kref) 1331 { 1332 struct c4iw_ep *ep; 1333 #if defined(KTR) || defined(INVARIANTS) 1334 struct c4iw_ep_common *epc; 1335 #endif 1336 1337 ep = container_of(kref, struct c4iw_ep, com.kref); 1338 #if defined(KTR) || defined(INVARIANTS) 1339 epc = &ep->com; 1340 #endif 1341 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list", 1342 __func__, epc)); 1343 if (test_bit(QP_REFERENCED, &ep->com.flags)) 1344 deref_qp(ep); 1345 CTR4(KTR_IW_CXGBE, "%s: ep %p, history 0x%lx, flags 0x%lx", 1346 __func__, ep, epc->history, epc->flags); 1347 kfree(ep); 1348 } 1349 1350 static void release_ep_resources(struct c4iw_ep *ep) 1351 { 1352 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep); 1353 set_bit(RELEASE_RESOURCES, &ep->com.flags); 1354 c4iw_put_ep(&ep->com); 1355 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep); 1356 } 1357 1358 static int 1359 send_mpa_req(struct c4iw_ep *ep) 1360 { 1361 int mpalen; 1362 struct mpa_message *mpa; 1363 struct mpa_v2_conn_params mpa_v2_params; 1364 struct mbuf *m; 1365 char mpa_rev_to_use = mpa_rev; 1366 int err = 0; 1367 1368 if (ep->retry_with_mpa_v1) 1369 mpa_rev_to_use = 1; 1370 mpalen = sizeof(*mpa) + ep->plen; 1371 if (mpa_rev_to_use == 2) 1372 mpalen += sizeof(struct mpa_v2_conn_params); 1373 1374 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1375 if (mpa == NULL) { 1376 err = -ENOMEM; 1377 CTR3(KTR_IW_CXGBE, "%s:smr1 ep: %p , error: %d", 1378 __func__, ep, err); 1379 goto err; 1380 } 1381 1382 memset(mpa, 0, mpalen); 1383 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 1384 mpa->flags = (crc_enabled ? MPA_CRC : 0) | 1385 (markers_enabled ? MPA_MARKERS : 0) | 1386 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); 1387 mpa->private_data_size = htons(ep->plen); 1388 mpa->revision = mpa_rev_to_use; 1389 1390 if (mpa_rev_to_use == 1) { 1391 ep->tried_with_mpa_v1 = 1; 1392 ep->retry_with_mpa_v1 = 0; 1393 } 1394 1395 if (mpa_rev_to_use == 2) { 1396 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1397 sizeof(struct mpa_v2_conn_params)); 1398 mpa_v2_params.ird = htons((u16)ep->ird); 1399 mpa_v2_params.ord = htons((u16)ep->ord); 1400 1401 if (peer2peer) { 1402 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1403 1404 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1405 mpa_v2_params.ord |= 1406 htons(MPA_V2_RDMA_WRITE_RTR); 1407 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1408 mpa_v2_params.ord |= 1409 htons(MPA_V2_RDMA_READ_RTR); 1410 } 1411 } 1412 memcpy(mpa->private_data, &mpa_v2_params, 1413 sizeof(struct mpa_v2_conn_params)); 1414 1415 if (ep->plen) { 1416 1417 memcpy(mpa->private_data + 1418 sizeof(struct mpa_v2_conn_params), 1419 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1420 } 1421 } else { 1422 1423 if (ep->plen) 1424 memcpy(mpa->private_data, 1425 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1426 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep); 1427 } 1428 1429 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1430 if (m == NULL) { 1431 err = -ENOMEM; 1432 CTR3(KTR_IW_CXGBE, "%s:smr2 ep: %p , error: %d", 1433 __func__, ep, err); 1434 free(mpa, M_CXGBE); 1435 goto err; 1436 } 1437 m_copyback(m, 0, mpalen, (void *)mpa); 1438 free(mpa, M_CXGBE); 1439 1440 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1441 ep->com.thread); 1442 if (err) { 1443 CTR3(KTR_IW_CXGBE, "%s:smr3 ep: %p , error: %d", 1444 __func__, ep, err); 1445 goto err; 1446 } 1447 1448 START_EP_TIMER(ep); 1449 ep->com.state = MPA_REQ_SENT; 1450 ep->mpa_attr.initiator = 1; 1451 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1452 return 0; 1453 err: 1454 connect_reply_upcall(ep, err); 1455 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1456 return err; 1457 } 1458 1459 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 1460 { 1461 int mpalen ; 1462 struct mpa_message *mpa; 1463 struct mpa_v2_conn_params mpa_v2_params; 1464 struct mbuf *m; 1465 int err; 1466 1467 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid, 1468 ep->plen); 1469 1470 mpalen = sizeof(*mpa) + plen; 1471 1472 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1473 1474 mpalen += sizeof(struct mpa_v2_conn_params); 1475 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep, 1476 ep->mpa_attr.version, mpalen); 1477 } 1478 1479 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1480 if (mpa == NULL) 1481 return (-ENOMEM); 1482 1483 memset(mpa, 0, mpalen); 1484 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1485 mpa->flags = MPA_REJECT; 1486 mpa->revision = mpa_rev; 1487 mpa->private_data_size = htons(plen); 1488 1489 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1490 1491 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1492 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1493 sizeof(struct mpa_v2_conn_params)); 1494 mpa_v2_params.ird = htons(((u16)ep->ird) | 1495 (peer2peer ? MPA_V2_PEER2PEER_MODEL : 1496 0)); 1497 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 1498 (p2p_type == 1499 FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 1500 MPA_V2_RDMA_WRITE_RTR : p2p_type == 1501 FW_RI_INIT_P2PTYPE_READ_REQ ? 1502 MPA_V2_RDMA_READ_RTR : 0) : 0)); 1503 memcpy(mpa->private_data, &mpa_v2_params, 1504 sizeof(struct mpa_v2_conn_params)); 1505 1506 if (ep->plen) 1507 memcpy(mpa->private_data + 1508 sizeof(struct mpa_v2_conn_params), pdata, plen); 1509 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep, 1510 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen); 1511 } else 1512 if (plen) 1513 memcpy(mpa->private_data, pdata, plen); 1514 1515 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1516 if (m == NULL) { 1517 free(mpa, M_CXGBE); 1518 return (-ENOMEM); 1519 } 1520 m_copyback(m, 0, mpalen, (void *)mpa); 1521 free(mpa, M_CXGBE); 1522 1523 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread); 1524 if (!err) 1525 ep->snd_seq += mpalen; 1526 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err); 1527 return err; 1528 } 1529 1530 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 1531 { 1532 int mpalen; 1533 struct mpa_message *mpa; 1534 struct mbuf *m; 1535 struct mpa_v2_conn_params mpa_v2_params; 1536 int err; 1537 1538 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep); 1539 1540 mpalen = sizeof(*mpa) + plen; 1541 1542 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1543 1544 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep, 1545 ep->mpa_attr.version); 1546 mpalen += sizeof(struct mpa_v2_conn_params); 1547 } 1548 1549 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1550 if (mpa == NULL) 1551 return (-ENOMEM); 1552 1553 memset(mpa, 0, sizeof(*mpa)); 1554 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1555 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 1556 (markers_enabled ? MPA_MARKERS : 0); 1557 mpa->revision = ep->mpa_attr.version; 1558 mpa->private_data_size = htons(plen); 1559 1560 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1561 1562 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1563 mpa->private_data_size += 1564 htons(sizeof(struct mpa_v2_conn_params)); 1565 mpa_v2_params.ird = htons((u16)ep->ird); 1566 mpa_v2_params.ord = htons((u16)ep->ord); 1567 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep, 1568 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord); 1569 1570 if (peer2peer && (ep->mpa_attr.p2p_type != 1571 FW_RI_INIT_P2PTYPE_DISABLED)) { 1572 1573 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1574 1575 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1576 1577 mpa_v2_params.ord |= 1578 htons(MPA_V2_RDMA_WRITE_RTR); 1579 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d", 1580 __func__, ep, p2p_type, mpa_v2_params.ird, 1581 mpa_v2_params.ord); 1582 } 1583 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1584 1585 mpa_v2_params.ord |= 1586 htons(MPA_V2_RDMA_READ_RTR); 1587 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d", 1588 __func__, ep, p2p_type, mpa_v2_params.ird, 1589 mpa_v2_params.ord); 1590 } 1591 } 1592 1593 memcpy(mpa->private_data, &mpa_v2_params, 1594 sizeof(struct mpa_v2_conn_params)); 1595 1596 if (ep->plen) 1597 memcpy(mpa->private_data + 1598 sizeof(struct mpa_v2_conn_params), pdata, plen); 1599 } else 1600 if (plen) 1601 memcpy(mpa->private_data, pdata, plen); 1602 1603 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1604 if (m == NULL) { 1605 free(mpa, M_CXGBE); 1606 return (-ENOMEM); 1607 } 1608 m_copyback(m, 0, mpalen, (void *)mpa); 1609 free(mpa, M_CXGBE); 1610 1611 1612 ep->com.state = MPA_REP_SENT; 1613 ep->snd_seq += mpalen; 1614 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1615 ep->com.thread); 1616 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err); 1617 return err; 1618 } 1619 1620 1621 1622 static void close_complete_upcall(struct c4iw_ep *ep, int status) 1623 { 1624 struct iw_cm_event event; 1625 1626 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep); 1627 memset(&event, 0, sizeof(event)); 1628 event.event = IW_CM_EVENT_CLOSE; 1629 event.status = status; 1630 1631 if (ep->com.cm_id) { 1632 1633 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep); 1634 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1635 deref_cm_id(&ep->com); 1636 set_bit(CLOSE_UPCALL, &ep->com.history); 1637 } 1638 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep); 1639 } 1640 1641 static int 1642 send_abort(struct c4iw_ep *ep) 1643 { 1644 struct socket *so = ep->com.so; 1645 struct sockopt sopt; 1646 int rc; 1647 struct linger l; 1648 1649 CTR5(KTR_IW_CXGBE, "%s ep %p so %p state %s tid %d", __func__, ep, so, 1650 states[ep->com.state], ep->hwtid); 1651 1652 l.l_onoff = 1; 1653 l.l_linger = 0; 1654 1655 /* linger_time of 0 forces RST to be sent */ 1656 sopt.sopt_dir = SOPT_SET; 1657 sopt.sopt_level = SOL_SOCKET; 1658 sopt.sopt_name = SO_LINGER; 1659 sopt.sopt_val = (caddr_t)&l; 1660 sopt.sopt_valsize = sizeof l; 1661 sopt.sopt_td = NULL; 1662 rc = -sosetopt(so, &sopt); 1663 if (rc != 0) { 1664 log(LOG_ERR, "%s: sosetopt(%p, linger = 0) failed with %d.\n", 1665 __func__, so, rc); 1666 } 1667 1668 uninit_iwarp_socket(so); 1669 soclose(so); 1670 set_bit(ABORT_CONN, &ep->com.history); 1671 1672 /* 1673 * TBD: iw_cxgbe driver should receive ABORT reply for every ABORT 1674 * request it has sent. But the current TOE driver is not propagating 1675 * this ABORT reply event (via do_abort_rpl) to iw_cxgbe. So as a work- 1676 * around de-refererece 'ep' here instead of doing it in abort_rpl() 1677 * handler(not yet implemented) of iw_cxgbe driver. 1678 */ 1679 release_ep_resources(ep); 1680 ep->com.state = DEAD; 1681 1682 return (0); 1683 } 1684 1685 static void peer_close_upcall(struct c4iw_ep *ep) 1686 { 1687 struct iw_cm_event event; 1688 1689 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep); 1690 memset(&event, 0, sizeof(event)); 1691 event.event = IW_CM_EVENT_DISCONNECT; 1692 1693 if (ep->com.cm_id) { 1694 1695 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep); 1696 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1697 set_bit(DISCONN_UPCALL, &ep->com.history); 1698 } 1699 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep); 1700 } 1701 1702 static void peer_abort_upcall(struct c4iw_ep *ep) 1703 { 1704 struct iw_cm_event event; 1705 1706 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep); 1707 memset(&event, 0, sizeof(event)); 1708 event.event = IW_CM_EVENT_CLOSE; 1709 event.status = -ECONNRESET; 1710 1711 if (ep->com.cm_id) { 1712 1713 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep); 1714 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1715 deref_cm_id(&ep->com); 1716 set_bit(ABORT_UPCALL, &ep->com.history); 1717 } 1718 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep); 1719 } 1720 1721 static void connect_reply_upcall(struct c4iw_ep *ep, int status) 1722 { 1723 struct iw_cm_event event; 1724 1725 CTR3(KTR_IW_CXGBE, "%s:cruB %p, status: %d", __func__, ep, status); 1726 memset(&event, 0, sizeof(event)); 1727 event.event = IW_CM_EVENT_CONNECT_REPLY; 1728 event.status = ((status == -ECONNABORTED) || (status == -EPIPE)) ? 1729 -ECONNRESET : status; 1730 event.local_addr = ep->com.local_addr; 1731 event.remote_addr = ep->com.remote_addr; 1732 1733 if ((status == 0) || (status == -ECONNREFUSED)) { 1734 1735 if (!ep->tried_with_mpa_v1) { 1736 1737 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep); 1738 /* this means MPA_v2 is used */ 1739 event.ord = ep->ird; 1740 event.ird = ep->ord; 1741 event.private_data_len = ep->plen - 1742 sizeof(struct mpa_v2_conn_params); 1743 event.private_data = ep->mpa_pkt + 1744 sizeof(struct mpa_message) + 1745 sizeof(struct mpa_v2_conn_params); 1746 } else { 1747 1748 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep); 1749 /* this means MPA_v1 is used */ 1750 event.ord = c4iw_max_read_depth; 1751 event.ird = c4iw_max_read_depth; 1752 event.private_data_len = ep->plen; 1753 event.private_data = ep->mpa_pkt + 1754 sizeof(struct mpa_message); 1755 } 1756 } 1757 1758 if (ep->com.cm_id) { 1759 1760 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep); 1761 set_bit(CONN_RPL_UPCALL, &ep->com.history); 1762 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1763 } 1764 1765 if(status == -ECONNABORTED) { 1766 1767 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status); 1768 return; 1769 } 1770 1771 if (status < 0) { 1772 1773 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status); 1774 deref_cm_id(&ep->com); 1775 } 1776 1777 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep); 1778 } 1779 1780 static int connect_request_upcall(struct c4iw_ep *ep) 1781 { 1782 struct iw_cm_event event; 1783 int ret; 1784 1785 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep, 1786 ep->tried_with_mpa_v1); 1787 1788 memset(&event, 0, sizeof(event)); 1789 event.event = IW_CM_EVENT_CONNECT_REQUEST; 1790 event.local_addr = ep->com.local_addr; 1791 event.remote_addr = ep->com.remote_addr; 1792 event.provider_data = ep; 1793 1794 if (!ep->tried_with_mpa_v1) { 1795 /* this means MPA_v2 is used */ 1796 event.ord = ep->ord; 1797 event.ird = ep->ird; 1798 event.private_data_len = ep->plen - 1799 sizeof(struct mpa_v2_conn_params); 1800 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 1801 sizeof(struct mpa_v2_conn_params); 1802 } else { 1803 1804 /* this means MPA_v1 is used. Send max supported */ 1805 event.ord = c4iw_max_read_depth; 1806 event.ird = c4iw_max_read_depth; 1807 event.private_data_len = ep->plen; 1808 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 1809 } 1810 1811 c4iw_get_ep(&ep->com); 1812 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, 1813 &event); 1814 if(ret) { 1815 CTR3(KTR_IW_CXGBE, "%s: ep %p, Failure while notifying event to" 1816 " IWCM, err:%d", __func__, ep, ret); 1817 c4iw_put_ep(&ep->com); 1818 } else 1819 /* Dereference parent_ep only in success case. 1820 * In case of failure, parent_ep is dereferenced by the caller 1821 * of process_mpa_request(). 1822 */ 1823 c4iw_put_ep(&ep->parent_ep->com); 1824 1825 set_bit(CONNREQ_UPCALL, &ep->com.history); 1826 return ret; 1827 } 1828 1829 static void established_upcall(struct c4iw_ep *ep) 1830 { 1831 struct iw_cm_event event; 1832 1833 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep); 1834 memset(&event, 0, sizeof(event)); 1835 event.event = IW_CM_EVENT_ESTABLISHED; 1836 event.ird = ep->ord; 1837 event.ord = ep->ird; 1838 1839 if (ep->com.cm_id) { 1840 1841 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep); 1842 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1843 set_bit(ESTAB_UPCALL, &ep->com.history); 1844 } 1845 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep); 1846 } 1847 1848 1849 #define RELAXED_IRD_NEGOTIATION 1 1850 1851 /* 1852 * process_mpa_reply - process streaming mode MPA reply 1853 * 1854 * Returns: 1855 * 1856 * 0 upon success indicating a connect request was delivered to the ULP 1857 * or the mpa request is incomplete but valid so far. 1858 * 1859 * 1 if a failure requires the caller to close the connection. 1860 * 1861 * 2 if a failure requires the caller to abort the connection. 1862 */ 1863 static int process_mpa_reply(struct c4iw_ep *ep) 1864 { 1865 struct mpa_message *mpa; 1866 struct mpa_v2_conn_params *mpa_v2_params; 1867 u16 plen; 1868 u16 resp_ird, resp_ord; 1869 u8 rtr_mismatch = 0, insuff_ird = 0; 1870 struct c4iw_qp_attributes attrs = {0}; 1871 enum c4iw_qp_attr_mask mask; 1872 int err; 1873 struct mbuf *top, *m; 1874 int flags = MSG_DONTWAIT; 1875 struct uio uio; 1876 int disconnect = 0; 1877 1878 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep); 1879 1880 /* 1881 * Stop mpa timer. If it expired, then 1882 * we ignore the MPA reply. process_timeout() 1883 * will abort the connection. 1884 */ 1885 if (STOP_EP_TIMER(ep)) 1886 return 0; 1887 1888 uio.uio_resid = 1000000; 1889 uio.uio_td = ep->com.thread; 1890 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags); 1891 1892 if (err) { 1893 1894 if (err == EWOULDBLOCK) { 1895 1896 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep); 1897 START_EP_TIMER(ep); 1898 return 0; 1899 } 1900 err = -err; 1901 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep); 1902 goto err; 1903 } 1904 1905 if (ep->com.so->so_rcv.sb_mb) { 1906 1907 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep); 1908 printf("%s data after soreceive called! so %p sb_mb %p top %p\n", 1909 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top); 1910 } 1911 1912 m = top; 1913 1914 do { 1915 1916 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep); 1917 /* 1918 * If we get more than the supported amount of private data 1919 * then we must fail this connection. 1920 */ 1921 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) { 1922 1923 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep, 1924 ep->mpa_pkt_len + m->m_len); 1925 err = (-EINVAL); 1926 goto err_stop_timer; 1927 } 1928 1929 /* 1930 * copy the new data into our accumulation buffer. 1931 */ 1932 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len])); 1933 ep->mpa_pkt_len += m->m_len; 1934 if (!m->m_next) 1935 m = m->m_nextpkt; 1936 else 1937 m = m->m_next; 1938 } while (m); 1939 1940 m_freem(top); 1941 /* 1942 * if we don't even have the mpa message, then bail. 1943 */ 1944 if (ep->mpa_pkt_len < sizeof(*mpa)) { 1945 return 0; 1946 } 1947 mpa = (struct mpa_message *) ep->mpa_pkt; 1948 1949 /* Validate MPA header. */ 1950 if (mpa->revision > mpa_rev) { 1951 1952 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep, 1953 mpa->revision, mpa_rev); 1954 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, " 1955 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1956 err = -EPROTO; 1957 goto err_stop_timer; 1958 } 1959 1960 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1961 1962 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep); 1963 err = -EPROTO; 1964 goto err_stop_timer; 1965 } 1966 1967 plen = ntohs(mpa->private_data_size); 1968 1969 /* 1970 * Fail if there's too much private data. 1971 */ 1972 if (plen > MPA_MAX_PRIVATE_DATA) { 1973 1974 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep); 1975 err = -EPROTO; 1976 goto err_stop_timer; 1977 } 1978 1979 /* 1980 * If plen does not account for pkt size 1981 */ 1982 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1983 1984 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep); 1985 STOP_EP_TIMER(ep); 1986 err = -EPROTO; 1987 goto err_stop_timer; 1988 } 1989 1990 ep->plen = (u8) plen; 1991 1992 /* 1993 * If we don't have all the pdata yet, then bail. 1994 * We'll continue process when more data arrives. 1995 */ 1996 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) { 1997 1998 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep); 1999 return 0; 2000 } 2001 2002 if (mpa->flags & MPA_REJECT) { 2003 2004 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep); 2005 err = -ECONNREFUSED; 2006 goto err_stop_timer; 2007 } 2008 2009 /* 2010 * If we get here we have accumulated the entire mpa 2011 * start reply message including private data. And 2012 * the MPA header is valid. 2013 */ 2014 ep->com.state = FPDU_MODE; 2015 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2016 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2017 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2018 ep->mpa_attr.version = mpa->revision; 2019 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2020 2021 if (mpa->revision == 2) { 2022 2023 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep); 2024 ep->mpa_attr.enhanced_rdma_conn = 2025 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2026 2027 if (ep->mpa_attr.enhanced_rdma_conn) { 2028 2029 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep); 2030 mpa_v2_params = (struct mpa_v2_conn_params *) 2031 (ep->mpa_pkt + sizeof(*mpa)); 2032 resp_ird = ntohs(mpa_v2_params->ird) & 2033 MPA_V2_IRD_ORD_MASK; 2034 resp_ord = ntohs(mpa_v2_params->ord) & 2035 MPA_V2_IRD_ORD_MASK; 2036 2037 /* 2038 * This is a double-check. Ideally, below checks are 2039 * not required since ird/ord stuff has been taken 2040 * care of in c4iw_accept_cr 2041 */ 2042 if (ep->ird < resp_ord) { 2043 if (RELAXED_IRD_NEGOTIATION && resp_ord <= 2044 ep->com.dev->rdev.adap->params.max_ordird_qp) 2045 ep->ird = resp_ord; 2046 else 2047 insuff_ird = 1; 2048 } else if (ep->ird > resp_ord) { 2049 ep->ird = resp_ord; 2050 } 2051 if (ep->ord > resp_ird) { 2052 if (RELAXED_IRD_NEGOTIATION) 2053 ep->ord = resp_ird; 2054 else 2055 insuff_ird = 1; 2056 } 2057 if (insuff_ird) { 2058 err = -ENOMEM; 2059 ep->ird = resp_ord; 2060 ep->ord = resp_ird; 2061 } 2062 2063 if (ntohs(mpa_v2_params->ird) & 2064 MPA_V2_PEER2PEER_MODEL) { 2065 2066 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep); 2067 if (ntohs(mpa_v2_params->ord) & 2068 MPA_V2_RDMA_WRITE_RTR) { 2069 2070 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep); 2071 ep->mpa_attr.p2p_type = 2072 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2073 } 2074 else if (ntohs(mpa_v2_params->ord) & 2075 MPA_V2_RDMA_READ_RTR) { 2076 2077 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep); 2078 ep->mpa_attr.p2p_type = 2079 FW_RI_INIT_P2PTYPE_READ_REQ; 2080 } 2081 } 2082 } 2083 } else { 2084 2085 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep); 2086 2087 if (mpa->revision == 1) { 2088 2089 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep); 2090 2091 if (peer2peer) { 2092 2093 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep); 2094 ep->mpa_attr.p2p_type = p2p_type; 2095 } 2096 } 2097 } 2098 2099 if (set_tcpinfo(ep)) { 2100 2101 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep); 2102 printf("%s set_tcpinfo error\n", __func__); 2103 err = -ECONNRESET; 2104 goto err; 2105 } 2106 2107 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, " 2108 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__, 2109 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2110 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 2111 ep->mpa_attr.p2p_type); 2112 2113 /* 2114 * If responder's RTR does not match with that of initiator, assign 2115 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 2116 * generated when moving QP to RTS state. 2117 * A TERM message will be sent after QP has moved to RTS state 2118 */ 2119 if ((ep->mpa_attr.version == 2) && peer2peer && 2120 (ep->mpa_attr.p2p_type != p2p_type)) { 2121 2122 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep); 2123 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2124 rtr_mismatch = 1; 2125 } 2126 2127 2128 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2129 attrs.mpa_attr = ep->mpa_attr; 2130 attrs.max_ird = ep->ird; 2131 attrs.max_ord = ep->ord; 2132 attrs.llp_stream_handle = ep; 2133 attrs.next_state = C4IW_QP_STATE_RTS; 2134 2135 mask = C4IW_QP_ATTR_NEXT_STATE | 2136 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 2137 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 2138 2139 /* bind QP and TID with INIT_WR */ 2140 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2141 2142 if (err) { 2143 2144 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep); 2145 goto err; 2146 } 2147 2148 /* 2149 * If responder's RTR requirement did not match with what initiator 2150 * supports, generate TERM message 2151 */ 2152 if (rtr_mismatch) { 2153 2154 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep); 2155 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 2156 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2157 attrs.ecode = MPA_NOMATCH_RTR; 2158 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2159 attrs.send_term = 1; 2160 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2161 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2162 err = -ENOMEM; 2163 disconnect = 1; 2164 goto out; 2165 } 2166 2167 /* 2168 * Generate TERM if initiator IRD is not sufficient for responder 2169 * provided ORD. Currently, we do the same behaviour even when 2170 * responder provided IRD is also not sufficient as regards to 2171 * initiator ORD. 2172 */ 2173 if (insuff_ird) { 2174 2175 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep); 2176 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 2177 __func__); 2178 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2179 attrs.ecode = MPA_INSUFF_IRD; 2180 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2181 attrs.send_term = 1; 2182 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2183 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2184 err = -ENOMEM; 2185 disconnect = 1; 2186 goto out; 2187 } 2188 goto out; 2189 err_stop_timer: 2190 STOP_EP_TIMER(ep); 2191 err: 2192 disconnect = 2; 2193 out: 2194 connect_reply_upcall(ep, err); 2195 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep); 2196 return disconnect; 2197 } 2198 2199 /* 2200 * process_mpa_request - process streaming mode MPA request 2201 * 2202 * Returns: 2203 * 2204 * 0 upon success indicating a connect request was delivered to the ULP 2205 * or the mpa request is incomplete but valid so far. 2206 * 2207 * 1 if a failure requires the caller to close the connection. 2208 * 2209 * 2 if a failure requires the caller to abort the connection. 2210 */ 2211 static int 2212 process_mpa_request(struct c4iw_ep *ep) 2213 { 2214 struct mpa_message *mpa; 2215 struct mpa_v2_conn_params *mpa_v2_params; 2216 u16 plen; 2217 int flags = MSG_DONTWAIT; 2218 int rc; 2219 struct iovec iov; 2220 struct uio uio; 2221 enum c4iw_ep_state state = ep->com.state; 2222 2223 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]); 2224 2225 if (state != MPA_REQ_WAIT) 2226 return 0; 2227 2228 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len]; 2229 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2230 uio.uio_iov = &iov; 2231 uio.uio_iovcnt = 1; 2232 uio.uio_offset = 0; 2233 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2234 uio.uio_segflg = UIO_SYSSPACE; 2235 uio.uio_rw = UIO_READ; 2236 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */ 2237 2238 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags); 2239 if (rc == EAGAIN) 2240 return 0; 2241 else if (rc) 2242 goto err_stop_timer; 2243 2244 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data", 2245 __func__, ep->com.so)); 2246 ep->mpa_pkt_len += uio.uio_offset; 2247 2248 /* 2249 * If we get more than the supported amount of private data then we must 2250 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another 2251 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last 2252 * byte is filled by the soreceive above. 2253 */ 2254 2255 /* Don't even have the MPA message. Wait for more data to arrive. */ 2256 if (ep->mpa_pkt_len < sizeof(*mpa)) 2257 return 0; 2258 mpa = (struct mpa_message *) ep->mpa_pkt; 2259 2260 /* 2261 * Validate MPA Header. 2262 */ 2263 if (mpa->revision > mpa_rev) { 2264 log(LOG_ERR, "%s: MPA version mismatch. Local = %d," 2265 " Received = %d\n", __func__, mpa_rev, mpa->revision); 2266 goto err_stop_timer; 2267 } 2268 2269 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) 2270 goto err_stop_timer; 2271 2272 /* 2273 * Fail if there's too much private data. 2274 */ 2275 plen = ntohs(mpa->private_data_size); 2276 if (plen > MPA_MAX_PRIVATE_DATA) 2277 goto err_stop_timer; 2278 2279 /* 2280 * If plen does not account for pkt size 2281 */ 2282 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) 2283 goto err_stop_timer; 2284 2285 ep->plen = (u8) plen; 2286 2287 /* 2288 * If we don't have all the pdata yet, then bail. 2289 */ 2290 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 2291 return 0; 2292 2293 /* 2294 * If we get here we have accumulated the entire mpa 2295 * start reply message including private data. 2296 */ 2297 ep->mpa_attr.initiator = 0; 2298 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2299 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2300 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2301 ep->mpa_attr.version = mpa->revision; 2302 if (mpa->revision == 1) 2303 ep->tried_with_mpa_v1 = 1; 2304 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2305 2306 if (mpa->revision == 2) { 2307 ep->mpa_attr.enhanced_rdma_conn = 2308 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2309 if (ep->mpa_attr.enhanced_rdma_conn) { 2310 mpa_v2_params = (struct mpa_v2_conn_params *) 2311 (ep->mpa_pkt + sizeof(*mpa)); 2312 ep->ird = ntohs(mpa_v2_params->ird) & 2313 MPA_V2_IRD_ORD_MASK; 2314 ep->ird = min_t(u32, ep->ird, 2315 cur_max_read_depth(ep->com.dev)); 2316 ep->ord = ntohs(mpa_v2_params->ord) & 2317 MPA_V2_IRD_ORD_MASK; 2318 ep->ord = min_t(u32, ep->ord, 2319 cur_max_read_depth(ep->com.dev)); 2320 CTR3(KTR_IW_CXGBE, "%s initiator ird %u ord %u", 2321 __func__, ep->ird, ep->ord); 2322 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) 2323 if (peer2peer) { 2324 if (ntohs(mpa_v2_params->ord) & 2325 MPA_V2_RDMA_WRITE_RTR) 2326 ep->mpa_attr.p2p_type = 2327 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2328 else if (ntohs(mpa_v2_params->ord) & 2329 MPA_V2_RDMA_READ_RTR) 2330 ep->mpa_attr.p2p_type = 2331 FW_RI_INIT_P2PTYPE_READ_REQ; 2332 } 2333 } 2334 } else if (mpa->revision == 1 && peer2peer) 2335 ep->mpa_attr.p2p_type = p2p_type; 2336 2337 if (set_tcpinfo(ep)) 2338 goto err_stop_timer; 2339 2340 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, " 2341 "xmit_marker_enabled = %d, version = %d", __func__, 2342 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2343 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); 2344 2345 ep->com.state = MPA_REQ_RCVD; 2346 STOP_EP_TIMER(ep); 2347 2348 /* drive upcall */ 2349 if (ep->parent_ep->com.state != DEAD) 2350 if (connect_request_upcall(ep)) 2351 goto err_out; 2352 return 0; 2353 2354 err_stop_timer: 2355 STOP_EP_TIMER(ep); 2356 err_out: 2357 return 2; 2358 } 2359 2360 /* 2361 * Upcall from the adapter indicating data has been transmitted. 2362 * For us its just the single MPA request or reply. We can now free 2363 * the skb holding the mpa message. 2364 */ 2365 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 2366 { 2367 #ifdef KTR 2368 int err; 2369 #endif 2370 struct c4iw_ep *ep = to_ep(cm_id); 2371 int abort = 0; 2372 2373 mutex_lock(&ep->com.mutex); 2374 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep); 2375 2376 if ((ep->com.state == DEAD) || 2377 (ep->com.state != MPA_REQ_RCVD)) { 2378 2379 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep); 2380 mutex_unlock(&ep->com.mutex); 2381 c4iw_put_ep(&ep->com); 2382 return -ECONNRESET; 2383 } 2384 set_bit(ULP_REJECT, &ep->com.history); 2385 2386 if (mpa_rev == 0) { 2387 2388 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep); 2389 abort = 1; 2390 } 2391 else { 2392 2393 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep); 2394 abort = send_mpa_reject(ep, pdata, pdata_len); 2395 } 2396 STOP_EP_TIMER(ep); 2397 #ifdef KTR 2398 err = c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2399 #else 2400 c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2401 #endif 2402 mutex_unlock(&ep->com.mutex); 2403 c4iw_put_ep(&ep->com); 2404 CTR3(KTR_IW_CXGBE, "%s:crc4 %p, err: %d", __func__, ep, err); 2405 return 0; 2406 } 2407 2408 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2409 { 2410 int err; 2411 struct c4iw_qp_attributes attrs = {0}; 2412 enum c4iw_qp_attr_mask mask; 2413 struct c4iw_ep *ep = to_ep(cm_id); 2414 struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 2415 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 2416 int abort = 0; 2417 2418 mutex_lock(&ep->com.mutex); 2419 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep); 2420 2421 if ((ep->com.state == DEAD) || 2422 (ep->com.state != MPA_REQ_RCVD)) { 2423 2424 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep); 2425 err = -ECONNRESET; 2426 goto err_out; 2427 } 2428 2429 BUG_ON(!qp); 2430 2431 set_bit(ULP_ACCEPT, &ep->com.history); 2432 2433 if ((conn_param->ord > c4iw_max_read_depth) || 2434 (conn_param->ird > c4iw_max_read_depth)) { 2435 2436 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep); 2437 err = -EINVAL; 2438 goto err_abort; 2439 } 2440 2441 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 2442 2443 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep); 2444 2445 if (conn_param->ord > ep->ird) { 2446 if (RELAXED_IRD_NEGOTIATION) { 2447 conn_param->ord = ep->ird; 2448 } else { 2449 ep->ird = conn_param->ird; 2450 ep->ord = conn_param->ord; 2451 send_mpa_reject(ep, conn_param->private_data, 2452 conn_param->private_data_len); 2453 err = -ENOMEM; 2454 goto err_abort; 2455 } 2456 } 2457 if (conn_param->ird < ep->ord) { 2458 if (RELAXED_IRD_NEGOTIATION && 2459 ep->ord <= h->rdev.adap->params.max_ordird_qp) { 2460 conn_param->ird = ep->ord; 2461 } else { 2462 err = -ENOMEM; 2463 goto err_abort; 2464 } 2465 } 2466 } 2467 ep->ird = conn_param->ird; 2468 ep->ord = conn_param->ord; 2469 2470 if (ep->mpa_attr.version == 1) { 2471 if (peer2peer && ep->ird == 0) 2472 ep->ird = 1; 2473 } else { 2474 if (peer2peer && 2475 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) && 2476 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0) 2477 ep->ird = 1; 2478 } 2479 2480 CTR4(KTR_IW_CXGBE, "%s %d ird %d ord %d", __func__, __LINE__, 2481 ep->ird, ep->ord); 2482 2483 ep->com.cm_id = cm_id; 2484 ref_cm_id(&ep->com); 2485 ep->com.qp = qp; 2486 ref_qp(ep); 2487 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2488 2489 /* bind QP to EP and move to RTS */ 2490 attrs.mpa_attr = ep->mpa_attr; 2491 attrs.max_ird = ep->ird; 2492 attrs.max_ord = ep->ord; 2493 attrs.llp_stream_handle = ep; 2494 attrs.next_state = C4IW_QP_STATE_RTS; 2495 2496 /* bind QP and TID with INIT_WR */ 2497 mask = C4IW_QP_ATTR_NEXT_STATE | 2498 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 2499 C4IW_QP_ATTR_MPA_ATTR | 2500 C4IW_QP_ATTR_MAX_IRD | 2501 C4IW_QP_ATTR_MAX_ORD; 2502 2503 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2504 if (err) { 2505 CTR3(KTR_IW_CXGBE, "%s:caca %p, err: %d", __func__, ep, err); 2506 goto err_defef_cm_id; 2507 } 2508 2509 err = send_mpa_reply(ep, conn_param->private_data, 2510 conn_param->private_data_len); 2511 if (err) { 2512 CTR3(KTR_IW_CXGBE, "%s:cacb %p, err: %d", __func__, ep, err); 2513 goto err_defef_cm_id; 2514 } 2515 2516 ep->com.state = FPDU_MODE; 2517 established_upcall(ep); 2518 mutex_unlock(&ep->com.mutex); 2519 c4iw_put_ep(&ep->com); 2520 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep); 2521 return 0; 2522 err_defef_cm_id: 2523 deref_cm_id(&ep->com); 2524 err_abort: 2525 abort = 1; 2526 err_out: 2527 if (abort) 2528 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 2529 mutex_unlock(&ep->com.mutex); 2530 c4iw_put_ep(&ep->com); 2531 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep); 2532 return err; 2533 } 2534 2535 static int 2536 c4iw_sock_create(struct sockaddr_storage *laddr, struct socket **so) 2537 { 2538 int ret; 2539 int size, on; 2540 struct socket *sock = NULL; 2541 struct sockopt sopt; 2542 2543 ret = sock_create_kern(laddr->ss_family, 2544 SOCK_STREAM, IPPROTO_TCP, &sock); 2545 if (ret) { 2546 CTR2(KTR_IW_CXGBE, "%s:Failed to create TCP socket. err %d", 2547 __func__, ret); 2548 return ret; 2549 } 2550 2551 if (reuseaddr) { 2552 bzero(&sopt, sizeof(struct sockopt)); 2553 sopt.sopt_dir = SOPT_SET; 2554 sopt.sopt_level = SOL_SOCKET; 2555 sopt.sopt_name = SO_REUSEADDR; 2556 on = 1; 2557 sopt.sopt_val = &on; 2558 sopt.sopt_valsize = sizeof(on); 2559 ret = -sosetopt(sock, &sopt); 2560 if (ret != 0) { 2561 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEADDR) " 2562 "failed with %d.\n", __func__, sock, ret); 2563 } 2564 bzero(&sopt, sizeof(struct sockopt)); 2565 sopt.sopt_dir = SOPT_SET; 2566 sopt.sopt_level = SOL_SOCKET; 2567 sopt.sopt_name = SO_REUSEPORT; 2568 on = 1; 2569 sopt.sopt_val = &on; 2570 sopt.sopt_valsize = sizeof(on); 2571 ret = -sosetopt(sock, &sopt); 2572 if (ret != 0) { 2573 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEPORT) " 2574 "failed with %d.\n", __func__, sock, ret); 2575 } 2576 } 2577 2578 ret = -sobind(sock, (struct sockaddr *)laddr, curthread); 2579 if (ret) { 2580 CTR2(KTR_IW_CXGBE, "%s:Failed to bind socket. err %p", 2581 __func__, ret); 2582 sock_release(sock); 2583 return ret; 2584 } 2585 2586 size = laddr->ss_family == AF_INET6 ? 2587 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 2588 ret = sock_getname(sock, (struct sockaddr *)laddr, &size, 0); 2589 if (ret) { 2590 CTR2(KTR_IW_CXGBE, "%s:sock_getname failed. err %p", 2591 __func__, ret); 2592 sock_release(sock); 2593 return ret; 2594 } 2595 2596 *so = sock; 2597 return 0; 2598 } 2599 2600 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2601 { 2602 int err = 0; 2603 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2604 struct c4iw_ep *ep = NULL; 2605 if_t nh_ifp; /* Logical egress interface */ 2606 struct epoch_tracker et; 2607 #ifdef VIMAGE 2608 struct rdma_cm_id *rdma_id = (struct rdma_cm_id*)cm_id->context; 2609 struct vnet *vnet = rdma_id->route.addr.dev_addr.net; 2610 #endif 2611 2612 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id); 2613 2614 2615 if ((conn_param->ord > c4iw_max_read_depth) || 2616 (conn_param->ird > c4iw_max_read_depth)) { 2617 2618 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id); 2619 err = -EINVAL; 2620 goto out; 2621 } 2622 ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2623 cm_id->provider_data = ep; 2624 2625 init_timer(&ep->timer); 2626 ep->plen = conn_param->private_data_len; 2627 2628 if (ep->plen) { 2629 2630 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep); 2631 memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 2632 conn_param->private_data, ep->plen); 2633 } 2634 ep->ird = conn_param->ird; 2635 ep->ord = conn_param->ord; 2636 2637 if (peer2peer && ep->ord == 0) { 2638 2639 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep); 2640 ep->ord = 1; 2641 } 2642 2643 ep->com.dev = dev; 2644 ep->com.cm_id = cm_id; 2645 ref_cm_id(&ep->com); 2646 ep->com.qp = get_qhp(dev, conn_param->qpn); 2647 2648 if (!ep->com.qp) { 2649 2650 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep); 2651 err = -EINVAL; 2652 goto fail; 2653 } 2654 ref_qp(ep); 2655 ep->com.thread = curthread; 2656 2657 NET_EPOCH_ENTER(et); 2658 CURVNET_SET(vnet); 2659 err = get_ifnet_from_raddr(&cm_id->remote_addr, &nh_ifp); 2660 CURVNET_RESTORE(); 2661 NET_EPOCH_EXIT(et); 2662 2663 if (err) { 2664 2665 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep); 2666 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 2667 err = EHOSTUNREACH; 2668 return err; 2669 } 2670 2671 if (!(if_getcapenable(nh_ifp) & IFCAP_TOE) || 2672 TOEDEV(nh_ifp) == NULL) { 2673 err = -ENOPROTOOPT; 2674 goto fail; 2675 } 2676 ep->com.state = CONNECTING; 2677 ep->tos = 0; 2678 ep->com.local_addr = cm_id->local_addr; 2679 ep->com.remote_addr = cm_id->remote_addr; 2680 2681 err = c4iw_sock_create(&cm_id->local_addr, &ep->com.so); 2682 if (err) 2683 goto fail; 2684 2685 setiwsockopt(ep->com.so); 2686 init_iwarp_socket(ep->com.so, &ep->com); 2687 err = -soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr, 2688 ep->com.thread); 2689 if (err) 2690 goto fail_free_so; 2691 CTR2(KTR_IW_CXGBE, "%s:ccE, ep %p", __func__, ep); 2692 return 0; 2693 2694 fail_free_so: 2695 uninit_iwarp_socket(ep->com.so); 2696 ep->com.state = DEAD; 2697 sock_release(ep->com.so); 2698 fail: 2699 deref_cm_id(&ep->com); 2700 c4iw_put_ep(&ep->com); 2701 ep = NULL; 2702 out: 2703 CTR2(KTR_IW_CXGBE, "%s:ccE Error %d", __func__, err); 2704 return err; 2705 } 2706 2707 /* 2708 * iwcm->create_listen. Returns -errno on failure. 2709 */ 2710 int 2711 c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 2712 { 2713 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2714 struct c4iw_listen_ep *lep = NULL; 2715 struct listen_port_info *port_info = NULL; 2716 int rc = 0; 2717 2718 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, backlog %s", __func__, cm_id, 2719 backlog); 2720 if (c4iw_fatal_error(&dev->rdev)) { 2721 CTR2(KTR_IW_CXGBE, "%s: cm_id %p, fatal error", __func__, 2722 cm_id); 2723 return -EIO; 2724 } 2725 lep = alloc_ep(sizeof(*lep), GFP_KERNEL); 2726 lep->com.cm_id = cm_id; 2727 ref_cm_id(&lep->com); 2728 lep->com.dev = dev; 2729 lep->backlog = backlog; 2730 lep->com.local_addr = cm_id->local_addr; 2731 lep->com.thread = curthread; 2732 cm_id->provider_data = lep; 2733 lep->com.state = LISTEN; 2734 2735 /* In case of INDADDR_ANY, ibcore creates cmid for each device and 2736 * invokes iw_cxgbe listener callbacks assuming that iw_cxgbe creates 2737 * HW listeners for each device seperately. But toecore expects single 2738 * solisten() call with INADDR_ANY address to create HW listeners on 2739 * all devices for a given port number. So iw_cxgbe driver calls 2740 * solisten() only once for INADDR_ANY(usually done at first time 2741 * listener callback from ibcore). And all the subsequent INADDR_ANY 2742 * listener callbacks from ibcore(for the same port address) do not 2743 * invoke solisten() as first listener callback has already created 2744 * listeners for all other devices(via solisten). 2745 */ 2746 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr, NULL)) { 2747 port_info = add_ep_to_listenlist(lep); 2748 /* skip solisten() if refcnt > 1, as the listeners were 2749 * already created by 'Master lep' 2750 */ 2751 if (port_info->refcnt > 1) { 2752 /* As there will be only one listener socket for a TCP 2753 * port, copy Master lep's socket pointer to other lep's 2754 * that are belonging to same TCP port. 2755 */ 2756 struct c4iw_listen_ep *head_lep = 2757 container_of(port_info->lep_list.next, 2758 struct c4iw_listen_ep, listen_ep_list); 2759 lep->com.so = head_lep->com.so; 2760 goto out; 2761 } 2762 } 2763 rc = c4iw_sock_create(&cm_id->local_addr, &lep->com.so); 2764 if (rc) { 2765 CTR2(KTR_IW_CXGBE, "%s:Failed to create socket. err %d", 2766 __func__, rc); 2767 goto fail; 2768 } 2769 2770 rc = -solisten(lep->com.so, backlog, curthread); 2771 if (rc) { 2772 CTR3(KTR_IW_CXGBE, "%s:Failed to listen on sock:%p. err %d", 2773 __func__, lep->com.so, rc); 2774 goto fail_free_so; 2775 } 2776 init_iwarp_socket(lep->com.so, &lep->com); 2777 out: 2778 return 0; 2779 2780 fail_free_so: 2781 sock_release(lep->com.so); 2782 fail: 2783 if (port_info) 2784 rem_ep_from_listenlist(lep); 2785 deref_cm_id(&lep->com); 2786 c4iw_put_ep(&lep->com); 2787 return rc; 2788 } 2789 2790 int 2791 c4iw_destroy_listen(struct iw_cm_id *cm_id) 2792 { 2793 struct c4iw_listen_ep *lep = to_listen_ep(cm_id); 2794 2795 mutex_lock(&lep->com.mutex); 2796 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, state %s", __func__, cm_id, 2797 states[lep->com.state]); 2798 2799 lep->com.state = DEAD; 2800 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr, 2801 lep->com.so->so_vnet)) { 2802 /* if no refcount then close listen socket */ 2803 if (!rem_ep_from_listenlist(lep)) 2804 close_socket(lep->com.so); 2805 } else 2806 close_socket(lep->com.so); 2807 deref_cm_id(&lep->com); 2808 mutex_unlock(&lep->com.mutex); 2809 c4iw_put_ep(&lep->com); 2810 return 0; 2811 } 2812 2813 int __c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2814 { 2815 int ret; 2816 mutex_lock(&ep->com.mutex); 2817 ret = c4iw_ep_disconnect(ep, abrupt, gfp); 2818 mutex_unlock(&ep->com.mutex); 2819 return ret; 2820 } 2821 2822 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2823 { 2824 int ret = 0; 2825 int close = 0; 2826 struct c4iw_rdev *rdev; 2827 2828 2829 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep); 2830 2831 rdev = &ep->com.dev->rdev; 2832 2833 if (c4iw_fatal_error(rdev)) { 2834 CTR3(KTR_IW_CXGBE, "%s:ced1 fatal error %p %s", __func__, ep, 2835 states[ep->com.state]); 2836 if (ep->com.state != DEAD) { 2837 send_abort(ep); 2838 ep->com.state = DEAD; 2839 } 2840 close_complete_upcall(ep, -ECONNRESET); 2841 return ECONNRESET; 2842 } 2843 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep, 2844 states[ep->com.state]); 2845 2846 /* 2847 * Ref the ep here in case we have fatal errors causing the 2848 * ep to be released and freed. 2849 */ 2850 c4iw_get_ep(&ep->com); 2851 switch (ep->com.state) { 2852 2853 case MPA_REQ_WAIT: 2854 case MPA_REQ_SENT: 2855 case MPA_REQ_RCVD: 2856 case MPA_REP_SENT: 2857 case FPDU_MODE: 2858 close = 1; 2859 if (abrupt) 2860 ep->com.state = ABORTING; 2861 else { 2862 ep->com.state = CLOSING; 2863 START_EP_TIMER(ep); 2864 } 2865 set_bit(CLOSE_SENT, &ep->com.flags); 2866 break; 2867 2868 case CLOSING: 2869 2870 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2871 2872 close = 1; 2873 if (abrupt) { 2874 STOP_EP_TIMER(ep); 2875 ep->com.state = ABORTING; 2876 } else 2877 ep->com.state = MORIBUND; 2878 } 2879 break; 2880 2881 case MORIBUND: 2882 case ABORTING: 2883 case DEAD: 2884 CTR3(KTR_IW_CXGBE, 2885 "%s ignoring disconnect ep %p state %u", __func__, 2886 ep, ep->com.state); 2887 break; 2888 2889 default: 2890 BUG(); 2891 break; 2892 } 2893 2894 2895 if (close) { 2896 2897 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep); 2898 2899 if (abrupt) { 2900 2901 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep); 2902 set_bit(EP_DISC_ABORT, &ep->com.history); 2903 close_complete_upcall(ep, -ECONNRESET); 2904 send_abort(ep); 2905 } else { 2906 2907 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep); 2908 set_bit(EP_DISC_CLOSE, &ep->com.history); 2909 2910 if (!ep->parent_ep) 2911 ep->com.state = MORIBUND; 2912 2913 CURVNET_SET(ep->com.so->so_vnet); 2914 ret = sodisconnect(ep->com.so); 2915 CURVNET_RESTORE(); 2916 if (ret) { 2917 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep); 2918 STOP_EP_TIMER(ep); 2919 send_abort(ep); 2920 ep->com.state = DEAD; 2921 close_complete_upcall(ep, -ECONNRESET); 2922 set_bit(EP_DISC_FAIL, &ep->com.history); 2923 if (ep->com.qp) { 2924 struct c4iw_qp_attributes attrs = {0}; 2925 2926 attrs.next_state = C4IW_QP_STATE_ERROR; 2927 ret = c4iw_modify_qp( 2928 ep->com.dev, ep->com.qp, 2929 C4IW_QP_ATTR_NEXT_STATE, 2930 &attrs, 1); 2931 CTR3(KTR_IW_CXGBE, "%s:ced7 %p ret %d", 2932 __func__, ep, ret); 2933 } 2934 } 2935 } 2936 } 2937 c4iw_put_ep(&ep->com); 2938 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep); 2939 return ret; 2940 } 2941 2942 #ifdef C4IW_EP_REDIRECT 2943 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, 2944 struct l2t_entry *l2t) 2945 { 2946 struct c4iw_ep *ep = ctx; 2947 2948 if (ep->dst != old) 2949 return 0; 2950 2951 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, 2952 l2t); 2953 dst_hold(new); 2954 cxgb4_l2t_release(ep->l2t); 2955 ep->l2t = l2t; 2956 dst_release(old); 2957 ep->dst = new; 2958 return 1; 2959 } 2960 #endif 2961 2962 2963 2964 static void ep_timeout(unsigned long arg) 2965 { 2966 struct c4iw_ep *ep = (struct c4iw_ep *)arg; 2967 2968 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 2969 2970 /* 2971 * Only insert if it is not already on the list. 2972 */ 2973 if (!(ep->com.ep_events & C4IW_EVENT_TIMEOUT)) { 2974 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep); 2975 add_ep_to_req_list(ep, C4IW_EVENT_TIMEOUT); 2976 } 2977 } 2978 } 2979 2980 static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl) 2981 { 2982 uint64_t val = be64toh(*rpl); 2983 int ret; 2984 struct c4iw_wr_wait *wr_waitp; 2985 2986 ret = (int)((val >> 8) & 0xff); 2987 wr_waitp = (struct c4iw_wr_wait *)rpl[1]; 2988 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret); 2989 if (wr_waitp) 2990 c4iw_wake_up(wr_waitp, ret ? -ret : 0); 2991 2992 return (0); 2993 } 2994 2995 static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl) 2996 { 2997 struct cqe_list_entry *cle; 2998 unsigned long flag; 2999 3000 cle = malloc(sizeof(*cle), M_CXGBE, M_NOWAIT); 3001 cle->rhp = sc->iwarp_softc; 3002 cle->err_cqe = *(const struct t4_cqe *)(&rpl[0]); 3003 3004 spin_lock_irqsave(&err_cqe_lock, flag); 3005 list_add_tail(&cle->entry, &err_cqe_list); 3006 queue_work(c4iw_taskq, &c4iw_task); 3007 spin_unlock_irqrestore(&err_cqe_lock, flag); 3008 3009 return (0); 3010 } 3011 3012 static int 3013 process_terminate(struct c4iw_ep *ep) 3014 { 3015 struct c4iw_qp_attributes attrs = {0}; 3016 3017 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep); 3018 3019 if (ep && ep->com.qp) { 3020 3021 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", 3022 ep->hwtid, ep->com.qp->wq.sq.qid); 3023 attrs.next_state = C4IW_QP_STATE_TERMINATE; 3024 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 3025 1); 3026 } else 3027 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", 3028 ep->hwtid); 3029 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep); 3030 3031 return 0; 3032 } 3033 3034 int __init c4iw_cm_init(void) 3035 { 3036 3037 t4_register_cpl_handler(CPL_RDMA_TERMINATE, terminate); 3038 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, fw6_wr_rpl); 3039 t4_register_fw_msg_handler(FW6_TYPE_CQE, fw6_cqe_handler); 3040 t4_register_an_handler(c4iw_ev_handler); 3041 3042 TAILQ_INIT(&req_list); 3043 spin_lock_init(&req_lock); 3044 INIT_LIST_HEAD(&err_cqe_list); 3045 spin_lock_init(&err_cqe_lock); 3046 3047 INIT_WORK(&c4iw_task, process_req); 3048 3049 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe"); 3050 if (!c4iw_taskq) 3051 return -ENOMEM; 3052 3053 return 0; 3054 } 3055 3056 void __exit c4iw_cm_term(void) 3057 { 3058 WARN_ON(!TAILQ_EMPTY(&req_list)); 3059 WARN_ON(!list_empty(&err_cqe_list)); 3060 flush_workqueue(c4iw_taskq); 3061 destroy_workqueue(c4iw_taskq); 3062 3063 t4_register_cpl_handler(CPL_RDMA_TERMINATE, NULL); 3064 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, NULL); 3065 t4_register_fw_msg_handler(FW6_TYPE_CQE, NULL); 3066 t4_register_an_handler(NULL); 3067 } 3068 #endif 3069