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 __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 *)(sototcpcb((so))->t_toe)) 72 73 #include "iw_cxgbe.h" 74 #include <linux/module.h> 75 #include <linux/workqueue.h> 76 #include <linux/if_vlan.h> 77 #include <net/netevent.h> 78 #include <rdma/rdma_cm.h> 79 80 static spinlock_t req_lock; 81 static TAILQ_HEAD(c4iw_ep_list, c4iw_ep_common) req_list; 82 static struct work_struct c4iw_task; 83 static struct workqueue_struct *c4iw_taskq; 84 static LIST_HEAD(err_cqe_list); 85 static spinlock_t err_cqe_lock; 86 static LIST_HEAD(listen_port_list); 87 static DEFINE_MUTEX(listen_port_mutex); 88 89 static void process_req(struct work_struct *ctx); 90 static void start_ep_timer(struct c4iw_ep *ep); 91 static int stop_ep_timer(struct c4iw_ep *ep); 92 static int set_tcpinfo(struct c4iw_ep *ep); 93 static void process_timeout(struct c4iw_ep *ep); 94 static void process_err_cqes(void); 95 static void *alloc_ep(int size, gfp_t flags); 96 static void close_socket(struct socket *so); 97 static int send_mpa_req(struct c4iw_ep *ep); 98 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen); 99 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen); 100 static void close_complete_upcall(struct c4iw_ep *ep, int status); 101 static int send_abort(struct c4iw_ep *ep); 102 static void peer_close_upcall(struct c4iw_ep *ep); 103 static void peer_abort_upcall(struct c4iw_ep *ep); 104 static void connect_reply_upcall(struct c4iw_ep *ep, int status); 105 static int connect_request_upcall(struct c4iw_ep *ep); 106 static void established_upcall(struct c4iw_ep *ep); 107 static int process_mpa_reply(struct c4iw_ep *ep); 108 static int process_mpa_request(struct c4iw_ep *ep); 109 static void process_peer_close(struct c4iw_ep *ep); 110 static void process_conn_error(struct c4iw_ep *ep); 111 static void process_close_complete(struct c4iw_ep *ep); 112 static void ep_timeout(unsigned long arg); 113 static void setiwsockopt(struct socket *so); 114 static void init_iwarp_socket(struct socket *so, void *arg); 115 static void uninit_iwarp_socket(struct socket *so); 116 static void process_data(struct c4iw_ep *ep); 117 static void process_connected(struct c4iw_ep *ep); 118 static int c4iw_so_upcall(struct socket *so, void *arg, int waitflag); 119 static void process_socket_event(struct c4iw_ep *ep); 120 static void release_ep_resources(struct c4iw_ep *ep); 121 static int process_terminate(struct c4iw_ep *ep); 122 static int terminate(struct sge_iq *iq, const struct rss_header *rss, 123 struct mbuf *m); 124 static int add_ep_to_req_list(struct c4iw_ep *ep, int ep_events); 125 static struct listen_port_info * 126 add_ep_to_listenlist(struct c4iw_listen_ep *lep); 127 static int rem_ep_from_listenlist(struct c4iw_listen_ep *lep); 128 static struct c4iw_listen_ep * 129 find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so); 130 static int get_ifnet_from_raddr(struct sockaddr_storage *raddr, 131 if_t *ifp); 132 static void process_newconn(struct c4iw_listen_ep *master_lep, 133 struct socket *new_so); 134 #define START_EP_TIMER(ep) \ 135 do { \ 136 CTR3(KTR_IW_CXGBE, "start_ep_timer (%s:%d) ep %p", \ 137 __func__, __LINE__, (ep)); \ 138 start_ep_timer(ep); \ 139 } while (0) 140 141 #define STOP_EP_TIMER(ep) \ 142 ({ \ 143 CTR3(KTR_IW_CXGBE, "stop_ep_timer (%s:%d) ep %p", \ 144 __func__, __LINE__, (ep)); \ 145 stop_ep_timer(ep); \ 146 }) 147 148 #define GET_LOCAL_ADDR(pladdr, so) \ 149 do { \ 150 struct sockaddr_storage *__a = NULL; \ 151 struct inpcb *__inp = sotoinpcb(so); \ 152 KASSERT(__inp != NULL, \ 153 ("GET_LOCAL_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 154 if (__inp->inp_vflag & INP_IPV4) \ 155 in_getsockaddr(so, (struct sockaddr **)&__a); \ 156 else \ 157 in6_getsockaddr(so, (struct sockaddr **)&__a); \ 158 *(pladdr) = *__a; \ 159 free(__a, M_SONAME); \ 160 } while (0) 161 162 #define GET_REMOTE_ADDR(praddr, so) \ 163 do { \ 164 struct sockaddr_storage *__a = NULL; \ 165 struct inpcb *__inp = sotoinpcb(so); \ 166 KASSERT(__inp != NULL, \ 167 ("GET_REMOTE_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 168 if (__inp->inp_vflag & INP_IPV4) \ 169 in_getpeeraddr(so, (struct sockaddr **)&__a); \ 170 else \ 171 in6_getpeeraddr(so, (struct sockaddr **)&__a); \ 172 *(praddr) = *__a; \ 173 free(__a, M_SONAME); \ 174 } while (0) 175 176 static char *states[] = { 177 "idle", 178 "listen", 179 "connecting", 180 "mpa_wait_req", 181 "mpa_req_sent", 182 "mpa_req_rcvd", 183 "mpa_rep_sent", 184 "fpdu_mode", 185 "aborting", 186 "closing", 187 "moribund", 188 "dead", 189 NULL, 190 }; 191 192 static void deref_cm_id(struct c4iw_ep_common *epc) 193 { 194 epc->cm_id->rem_ref(epc->cm_id); 195 epc->cm_id = NULL; 196 set_bit(CM_ID_DEREFED, &epc->history); 197 } 198 199 static void ref_cm_id(struct c4iw_ep_common *epc) 200 { 201 set_bit(CM_ID_REFED, &epc->history); 202 epc->cm_id->add_ref(epc->cm_id); 203 } 204 205 static void deref_qp(struct c4iw_ep *ep) 206 { 207 c4iw_qp_rem_ref(&ep->com.qp->ibqp); 208 clear_bit(QP_REFERENCED, &ep->com.flags); 209 set_bit(QP_DEREFED, &ep->com.history); 210 } 211 212 static void ref_qp(struct c4iw_ep *ep) 213 { 214 set_bit(QP_REFERENCED, &ep->com.flags); 215 set_bit(QP_REFED, &ep->com.history); 216 c4iw_qp_add_ref(&ep->com.qp->ibqp); 217 } 218 /* allocated per TCP port while listening */ 219 struct listen_port_info { 220 uint16_t port_num; /* TCP port address */ 221 struct list_head list; /* belongs to listen_port_list */ 222 struct list_head lep_list; /* per port lep list */ 223 uint32_t refcnt; /* number of lep's listening */ 224 }; 225 226 /* 227 * Following two lists are used to manage INADDR_ANY listeners: 228 * 1)listen_port_list 229 * 2)lep_list 230 * 231 * Below is the INADDR_ANY listener lists overview on a system with a two port 232 * adapter: 233 * |------------------| 234 * |listen_port_list | 235 * |------------------| 236 * | 237 * | |-----------| |-----------| 238 * | | port_num:X| | port_num:X| 239 * |--------------|-list------|-------|-list------|-------.... 240 * | lep_list----| | lep_list----| 241 * | refcnt | | | refcnt | | 242 * | | | | | | 243 * | | | | | | 244 * |-----------| | |-----------| | 245 * | | 246 * | | 247 * | | 248 * | | lep1 lep2 249 * | | |----------------| |----------------| 250 * | |----| listen_ep_list |----| listen_ep_list | 251 * | |----------------| |----------------| 252 * | 253 * | 254 * | lep1 lep2 255 * | |----------------| |----------------| 256 * |---| listen_ep_list |----| listen_ep_list | 257 * |----------------| |----------------| 258 * 259 * Because of two port adapter, the number of lep's are two(lep1 & lep2) for 260 * each TCP port number. 261 * 262 * Here 'lep1' is always marked as Master lep, because solisten() is always 263 * called through first lep. 264 * 265 */ 266 static struct listen_port_info * 267 add_ep_to_listenlist(struct c4iw_listen_ep *lep) 268 { 269 uint16_t port; 270 struct listen_port_info *port_info = NULL; 271 struct sockaddr_storage *laddr = &lep->com.local_addr; 272 273 port = (laddr->ss_family == AF_INET) ? 274 ((struct sockaddr_in *)laddr)->sin_port : 275 ((struct sockaddr_in6 *)laddr)->sin6_port; 276 277 mutex_lock(&listen_port_mutex); 278 279 list_for_each_entry(port_info, &listen_port_list, list) 280 if (port_info->port_num == port) 281 goto found_port; 282 283 port_info = malloc(sizeof(*port_info), M_CXGBE, M_WAITOK); 284 port_info->port_num = port; 285 port_info->refcnt = 0; 286 287 list_add_tail(&port_info->list, &listen_port_list); 288 INIT_LIST_HEAD(&port_info->lep_list); 289 290 found_port: 291 port_info->refcnt++; 292 list_add_tail(&lep->listen_ep_list, &port_info->lep_list); 293 mutex_unlock(&listen_port_mutex); 294 return port_info; 295 } 296 297 static int 298 rem_ep_from_listenlist(struct c4iw_listen_ep *lep) 299 { 300 uint16_t port; 301 struct listen_port_info *port_info = NULL; 302 struct sockaddr_storage *laddr = &lep->com.local_addr; 303 int refcnt = 0; 304 305 port = (laddr->ss_family == AF_INET) ? 306 ((struct sockaddr_in *)laddr)->sin_port : 307 ((struct sockaddr_in6 *)laddr)->sin6_port; 308 309 mutex_lock(&listen_port_mutex); 310 311 /* get the port_info structure based on the lep's port address */ 312 list_for_each_entry(port_info, &listen_port_list, list) { 313 if (port_info->port_num == port) { 314 port_info->refcnt--; 315 refcnt = port_info->refcnt; 316 /* remove the current lep from the listen list */ 317 list_del(&lep->listen_ep_list); 318 if (port_info->refcnt == 0) { 319 /* Remove this entry from the list as there 320 * are no more listeners for this port_num. 321 */ 322 list_del(&port_info->list); 323 kfree(port_info); 324 } 325 break; 326 } 327 } 328 mutex_unlock(&listen_port_mutex); 329 return refcnt; 330 } 331 332 /* 333 * Find the lep that belongs to the ifnet on which the SYN frame was received. 334 */ 335 struct c4iw_listen_ep * 336 find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so) 337 { 338 struct adapter *adap = NULL; 339 struct c4iw_listen_ep *lep = NULL; 340 if_t ifp = NULL, hw_ifp = NULL; 341 struct listen_port_info *port_info = NULL; 342 int i = 0, found_portinfo = 0, found_lep = 0; 343 uint16_t port; 344 345 /* 346 * STEP 1: Figure out 'ifp' of the physical interface, not pseudo 347 * interfaces like vlan, lagg, etc.. 348 * TBD: lagg support, lagg + vlan support. 349 */ 350 ifp = TOEPCB(so)->l2te->ifp; 351 if (if_gettype(ifp) == IFT_L2VLAN) { 352 hw_ifp = VLAN_TRUNKDEV(ifp); 353 if (hw_ifp == NULL) { 354 CTR4(KTR_IW_CXGBE, "%s: Failed to get parent ifnet of " 355 "vlan ifnet %p, sock %p, master_lep %p", 356 __func__, ifp, so, master_lep); 357 return (NULL); 358 } 359 } else 360 hw_ifp = ifp; 361 362 /* STEP 2: Find 'port_info' with listener local port address. */ 363 port = (master_lep->com.local_addr.ss_family == AF_INET) ? 364 ((struct sockaddr_in *)&master_lep->com.local_addr)->sin_port : 365 ((struct sockaddr_in6 *)&master_lep->com.local_addr)->sin6_port; 366 367 368 mutex_lock(&listen_port_mutex); 369 list_for_each_entry(port_info, &listen_port_list, list) 370 if (port_info->port_num == port) { 371 found_portinfo =1; 372 break; 373 } 374 if (!found_portinfo) 375 goto out; 376 377 /* STEP 3: Traverse through list of lep's that are bound to the current 378 * TCP port address and find the lep that belongs to the ifnet on which 379 * the SYN frame was received. 380 */ 381 list_for_each_entry(lep, &port_info->lep_list, listen_ep_list) { 382 adap = lep->com.dev->rdev.adap; 383 for_each_port(adap, i) { 384 if (hw_ifp == adap->port[i]->vi[0].ifp) { 385 found_lep =1; 386 goto out; 387 } 388 } 389 } 390 out: 391 mutex_unlock(&listen_port_mutex); 392 return found_lep ? lep : (NULL); 393 } 394 395 static void process_timeout(struct c4iw_ep *ep) 396 { 397 struct c4iw_qp_attributes attrs = {0}; 398 int abort = 1; 399 400 CTR4(KTR_IW_CXGBE, "%s ep :%p, tid:%u, state %d", __func__, 401 ep, ep->hwtid, ep->com.state); 402 set_bit(TIMEDOUT, &ep->com.history); 403 switch (ep->com.state) { 404 case MPA_REQ_SENT: 405 connect_reply_upcall(ep, -ETIMEDOUT); 406 break; 407 case MPA_REQ_WAIT: 408 case MPA_REQ_RCVD: 409 case MPA_REP_SENT: 410 case FPDU_MODE: 411 break; 412 case CLOSING: 413 case MORIBUND: 414 if (ep->com.cm_id && ep->com.qp) { 415 attrs.next_state = C4IW_QP_STATE_ERROR; 416 c4iw_modify_qp(ep->com.dev, ep->com.qp, 417 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 418 } 419 close_complete_upcall(ep, -ETIMEDOUT); 420 break; 421 case ABORTING: 422 case DEAD: 423 /* 424 * These states are expected if the ep timed out at the same 425 * time as another thread was calling stop_ep_timer(). 426 * So we silently do nothing for these states. 427 */ 428 abort = 0; 429 break; 430 default: 431 CTR4(KTR_IW_CXGBE, "%s unexpected state ep %p tid %u state %u" 432 , __func__, ep, ep->hwtid, ep->com.state); 433 abort = 0; 434 } 435 if (abort) 436 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 437 c4iw_put_ep(&ep->com); 438 return; 439 } 440 441 struct cqe_list_entry { 442 struct list_head entry; 443 struct c4iw_dev *rhp; 444 struct t4_cqe err_cqe; 445 }; 446 447 static void 448 process_err_cqes(void) 449 { 450 unsigned long flag; 451 struct cqe_list_entry *cle; 452 453 spin_lock_irqsave(&err_cqe_lock, flag); 454 while (!list_empty(&err_cqe_list)) { 455 struct list_head *tmp; 456 tmp = err_cqe_list.next; 457 list_del(tmp); 458 tmp->next = tmp->prev = NULL; 459 spin_unlock_irqrestore(&err_cqe_lock, flag); 460 cle = list_entry(tmp, struct cqe_list_entry, entry); 461 c4iw_ev_dispatch(cle->rhp, &cle->err_cqe); 462 free(cle, M_CXGBE); 463 spin_lock_irqsave(&err_cqe_lock, flag); 464 } 465 spin_unlock_irqrestore(&err_cqe_lock, flag); 466 467 return; 468 } 469 470 static void 471 process_req(struct work_struct *ctx) 472 { 473 struct c4iw_ep_common *epc; 474 unsigned long flag; 475 int ep_events; 476 477 process_err_cqes(); 478 spin_lock_irqsave(&req_lock, flag); 479 while (!TAILQ_EMPTY(&req_list)) { 480 epc = TAILQ_FIRST(&req_list); 481 TAILQ_REMOVE(&req_list, epc, entry); 482 epc->entry.tqe_prev = NULL; 483 ep_events = epc->ep_events; 484 epc->ep_events = 0; 485 spin_unlock_irqrestore(&req_lock, flag); 486 mutex_lock(&epc->mutex); 487 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, ep_state %s events 0x%x", 488 __func__, epc->so, epc, states[epc->state], ep_events); 489 if (ep_events & C4IW_EVENT_TERM) 490 process_terminate((struct c4iw_ep *)epc); 491 if (ep_events & C4IW_EVENT_TIMEOUT) 492 process_timeout((struct c4iw_ep *)epc); 493 if (ep_events & C4IW_EVENT_SOCKET) 494 process_socket_event((struct c4iw_ep *)epc); 495 mutex_unlock(&epc->mutex); 496 c4iw_put_ep(epc); 497 process_err_cqes(); 498 spin_lock_irqsave(&req_lock, flag); 499 } 500 spin_unlock_irqrestore(&req_lock, flag); 501 } 502 503 /* 504 * XXX: doesn't belong here in the iWARP driver. 505 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is 506 * set. Is this a valid assumption for active open? 507 */ 508 static int 509 set_tcpinfo(struct c4iw_ep *ep) 510 { 511 struct socket *so = ep->com.so; 512 struct inpcb *inp = sotoinpcb(so); 513 struct tcpcb *tp; 514 struct toepcb *toep; 515 int rc = 0; 516 517 INP_WLOCK(inp); 518 tp = intotcpcb(inp); 519 if ((tp->t_flags & TF_TOE) == 0) { 520 rc = EINVAL; 521 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n", 522 __func__, so, ep); 523 goto done; 524 } 525 toep = TOEPCB(so); 526 527 ep->hwtid = toep->tid; 528 ep->snd_seq = tp->snd_nxt; 529 ep->rcv_seq = tp->rcv_nxt; 530 done: 531 INP_WUNLOCK(inp); 532 return (rc); 533 534 } 535 static int 536 get_ifnet_from_raddr(struct sockaddr_storage *raddr, if_t *ifp) 537 { 538 int err = 0; 539 struct nhop_object *nh; 540 541 if (raddr->ss_family == AF_INET) { 542 struct sockaddr_in *raddr4 = (struct sockaddr_in *)raddr; 543 544 nh = fib4_lookup(RT_DEFAULT_FIB, raddr4->sin_addr, 0, 545 NHR_NONE, 0); 546 } else { 547 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)raddr; 548 struct in6_addr addr6; 549 uint32_t scopeid; 550 551 memset(&addr6, 0, sizeof(addr6)); 552 in6_splitscope((struct in6_addr *)&raddr6->sin6_addr, 553 &addr6, &scopeid); 554 nh = fib6_lookup(RT_DEFAULT_FIB, &addr6, scopeid, 555 NHR_NONE, 0); 556 } 557 558 if (nh == NULL) 559 err = EHOSTUNREACH; 560 else 561 *ifp = nh->nh_ifp; 562 CTR2(KTR_IW_CXGBE, "%s: return: %d", __func__, err); 563 return err; 564 } 565 566 static void 567 close_socket(struct socket *so) 568 { 569 uninit_iwarp_socket(so); 570 soclose(so); 571 } 572 573 static void 574 process_peer_close(struct c4iw_ep *ep) 575 { 576 struct c4iw_qp_attributes attrs = {0}; 577 int disconnect = 1; 578 int release = 0; 579 580 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep, 581 ep->com.so, states[ep->com.state]); 582 583 switch (ep->com.state) { 584 585 case MPA_REQ_WAIT: 586 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT DEAD", 587 __func__, ep); 588 /* Fallthrough */ 589 case MPA_REQ_SENT: 590 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT DEAD", 591 __func__, ep); 592 ep->com.state = DEAD; 593 connect_reply_upcall(ep, -ECONNABORTED); 594 595 disconnect = 0; 596 STOP_EP_TIMER(ep); 597 close_socket(ep->com.so); 598 deref_cm_id(&ep->com); 599 release = 1; 600 break; 601 602 case MPA_REQ_RCVD: 603 604 /* 605 * We're gonna mark this puppy DEAD, but keep 606 * the reference on it until the ULP accepts or 607 * rejects the CR. 608 */ 609 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING", 610 __func__, ep); 611 ep->com.state = CLOSING; 612 break; 613 614 case MPA_REP_SENT: 615 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING", 616 __func__, ep); 617 ep->com.state = CLOSING; 618 break; 619 620 case FPDU_MODE: 621 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING", 622 __func__, ep); 623 START_EP_TIMER(ep); 624 ep->com.state = CLOSING; 625 attrs.next_state = C4IW_QP_STATE_CLOSING; 626 c4iw_modify_qp(ep->com.dev, ep->com.qp, 627 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 628 peer_close_upcall(ep); 629 break; 630 631 case ABORTING: 632 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)", 633 __func__, ep); 634 disconnect = 0; 635 break; 636 637 case CLOSING: 638 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND", 639 __func__, ep); 640 ep->com.state = MORIBUND; 641 disconnect = 0; 642 break; 643 644 case MORIBUND: 645 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__, 646 ep); 647 STOP_EP_TIMER(ep); 648 if (ep->com.cm_id && ep->com.qp) { 649 attrs.next_state = C4IW_QP_STATE_IDLE; 650 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 651 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 652 } 653 close_socket(ep->com.so); 654 close_complete_upcall(ep, 0); 655 ep->com.state = DEAD; 656 release = 1; 657 disconnect = 0; 658 break; 659 660 case DEAD: 661 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)", 662 __func__, ep); 663 disconnect = 0; 664 break; 665 666 default: 667 panic("%s: ep %p state %d", __func__, ep, 668 ep->com.state); 669 break; 670 } 671 672 673 if (disconnect) { 674 675 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep); 676 c4iw_ep_disconnect(ep, 0, M_NOWAIT); 677 } 678 if (release) { 679 680 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep); 681 c4iw_put_ep(&ep->com); 682 } 683 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep); 684 return; 685 } 686 687 static void 688 process_conn_error(struct c4iw_ep *ep) 689 { 690 struct c4iw_qp_attributes attrs = {0}; 691 int ret; 692 int state; 693 694 state = ep->com.state; 695 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s", 696 __func__, ep, ep->com.so, ep->com.so->so_error, 697 states[ep->com.state]); 698 699 switch (state) { 700 701 case MPA_REQ_WAIT: 702 STOP_EP_TIMER(ep); 703 c4iw_put_ep(&ep->parent_ep->com); 704 break; 705 706 case MPA_REQ_SENT: 707 STOP_EP_TIMER(ep); 708 connect_reply_upcall(ep, -ECONNRESET); 709 break; 710 711 case MPA_REP_SENT: 712 ep->com.rpl_err = ECONNRESET; 713 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep); 714 break; 715 716 case MPA_REQ_RCVD: 717 break; 718 719 case MORIBUND: 720 case CLOSING: 721 STOP_EP_TIMER(ep); 722 /*FALLTHROUGH*/ 723 case FPDU_MODE: 724 725 if (ep->com.cm_id && ep->com.qp) { 726 727 attrs.next_state = C4IW_QP_STATE_ERROR; 728 ret = c4iw_modify_qp(ep->com.qp->rhp, 729 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 730 &attrs, 1); 731 if (ret) 732 log(LOG_ERR, 733 "%s - qp <- error failed!\n", 734 __func__); 735 } 736 peer_abort_upcall(ep); 737 break; 738 739 case ABORTING: 740 break; 741 742 case DEAD: 743 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!", 744 __func__, ep->com.so->so_error); 745 return; 746 747 default: 748 panic("%s: ep %p state %d", __func__, ep, state); 749 break; 750 } 751 752 if (state != ABORTING) { 753 close_socket(ep->com.so); 754 ep->com.state = DEAD; 755 c4iw_put_ep(&ep->com); 756 } 757 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep); 758 return; 759 } 760 761 static void 762 process_close_complete(struct c4iw_ep *ep) 763 { 764 struct c4iw_qp_attributes attrs = {0}; 765 int release = 0; 766 767 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep, 768 ep->com.so, states[ep->com.state]); 769 770 /* The cm_id may be null if we failed to connect */ 771 set_bit(CLOSE_CON_RPL, &ep->com.history); 772 773 switch (ep->com.state) { 774 775 case CLOSING: 776 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND", 777 __func__, ep); 778 ep->com.state = MORIBUND; 779 break; 780 781 case MORIBUND: 782 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__, 783 ep); 784 STOP_EP_TIMER(ep); 785 786 if ((ep->com.cm_id) && (ep->com.qp)) { 787 788 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE", 789 __func__, ep); 790 attrs.next_state = C4IW_QP_STATE_IDLE; 791 c4iw_modify_qp(ep->com.dev, 792 ep->com.qp, 793 C4IW_QP_ATTR_NEXT_STATE, 794 &attrs, 1); 795 } 796 797 close_socket(ep->com.so); 798 close_complete_upcall(ep, 0); 799 ep->com.state = DEAD; 800 release = 1; 801 break; 802 803 case ABORTING: 804 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep); 805 break; 806 807 case DEAD: 808 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep); 809 break; 810 default: 811 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p unknown ep state", 812 __func__, ep); 813 panic("%s:pcc6 %p unknown ep state", __func__, ep); 814 break; 815 } 816 817 if (release) { 818 819 CTR2(KTR_IW_CXGBE, "%s:pcc8 %p", __func__, ep); 820 release_ep_resources(ep); 821 } 822 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep); 823 return; 824 } 825 826 static void 827 setiwsockopt(struct socket *so) 828 { 829 int rc; 830 struct sockopt sopt; 831 int on = 1; 832 833 sopt.sopt_dir = SOPT_SET; 834 sopt.sopt_level = IPPROTO_TCP; 835 sopt.sopt_name = TCP_NODELAY; 836 sopt.sopt_val = (caddr_t)&on; 837 sopt.sopt_valsize = sizeof on; 838 sopt.sopt_td = NULL; 839 rc = -sosetopt(so, &sopt); 840 if (rc) { 841 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n", 842 __func__, so, rc); 843 } 844 } 845 846 static void 847 init_iwarp_socket(struct socket *so, void *arg) 848 { 849 if (SOLISTENING(so)) { 850 SOLISTEN_LOCK(so); 851 solisten_upcall_set(so, c4iw_so_upcall, arg); 852 so->so_state |= SS_NBIO; 853 SOLISTEN_UNLOCK(so); 854 } else { 855 SOCKBUF_LOCK(&so->so_rcv); 856 soupcall_set(so, SO_RCV, c4iw_so_upcall, arg); 857 so->so_state |= SS_NBIO; 858 SOCKBUF_UNLOCK(&so->so_rcv); 859 } 860 } 861 862 static void 863 uninit_iwarp_socket(struct socket *so) 864 { 865 if (SOLISTENING(so)) { 866 SOLISTEN_LOCK(so); 867 solisten_upcall_set(so, NULL, NULL); 868 SOLISTEN_UNLOCK(so); 869 } else { 870 SOCKBUF_LOCK(&so->so_rcv); 871 soupcall_clear(so, SO_RCV); 872 SOCKBUF_UNLOCK(&so->so_rcv); 873 } 874 } 875 876 static void 877 process_data(struct c4iw_ep *ep) 878 { 879 int ret = 0; 880 int disconnect = 0; 881 struct c4iw_qp_attributes attrs = {0}; 882 883 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sbused %d", __func__, 884 ep->com.so, ep, states[ep->com.state], sbused(&ep->com.so->so_rcv)); 885 886 switch (ep->com.state) { 887 case MPA_REQ_SENT: 888 disconnect = process_mpa_reply(ep); 889 break; 890 case MPA_REQ_WAIT: 891 disconnect = process_mpa_request(ep); 892 if (disconnect) 893 /* Refered in process_newconn() */ 894 c4iw_put_ep(&ep->parent_ep->com); 895 break; 896 case FPDU_MODE: 897 MPASS(ep->com.qp != NULL); 898 attrs.next_state = C4IW_QP_STATE_TERMINATE; 899 ret = c4iw_modify_qp(ep->com.dev, ep->com.qp, 900 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 901 if (ret != -EINPROGRESS) 902 disconnect = 1; 903 break; 904 default: 905 log(LOG_ERR, "%s: Unexpected streaming data. ep %p, " 906 "state %d, so %p, so_state 0x%x, sbused %u\n", 907 __func__, ep, ep->com.state, ep->com.so, 908 ep->com.so->so_state, sbused(&ep->com.so->so_rcv)); 909 break; 910 } 911 if (disconnect) 912 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); 913 914 } 915 916 static void 917 process_connected(struct c4iw_ep *ep) 918 { 919 struct socket *so = ep->com.so; 920 921 if ((so->so_state & SS_ISCONNECTED) && !so->so_error) { 922 if (send_mpa_req(ep)) 923 goto err; 924 } else { 925 connect_reply_upcall(ep, -so->so_error); 926 goto err; 927 } 928 return; 929 err: 930 close_socket(so); 931 ep->com.state = DEAD; 932 c4iw_put_ep(&ep->com); 933 return; 934 } 935 936 static inline bool c4iw_zero_addr(struct sockaddr *addr) 937 { 938 struct in6_addr *ip6; 939 940 if (addr->sa_family == AF_INET) 941 return (((struct sockaddr_in *)addr)->sin_addr.s_addr == 0); 942 else { 943 ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; 944 return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | 945 ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; 946 } 947 } 948 949 #define _IN_LOOPBACK(i) (((in_addr_t)(i) & 0xff000000) == 0x7f000000) 950 static inline bool c4iw_loopback_addr(struct sockaddr *addr, struct vnet *vnet) 951 { 952 bool ret; 953 954 if (addr->sa_family == AF_INET) { 955 if (vnet == NULL) 956 ret = _IN_LOOPBACK(ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 957 else { 958 CURVNET_SET_QUIET(vnet); 959 ret = IN_LOOPBACK(ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 960 CURVNET_RESTORE(); 961 } 962 } else { 963 ret = IN6_IS_ADDR_LOOPBACK(&((struct sockaddr_in6 *) addr)->sin6_addr); 964 } 965 return (ret); 966 } 967 #undef _IN_LOOPBACK 968 969 static inline bool c4iw_any_addr(struct sockaddr *addr, struct vnet *vnet) 970 { 971 return c4iw_zero_addr(addr) || c4iw_loopback_addr(addr, vnet); 972 } 973 974 static void 975 process_newconn(struct c4iw_listen_ep *master_lep, struct socket *new_so) 976 { 977 struct c4iw_listen_ep *real_lep = NULL; 978 struct c4iw_ep *new_ep = NULL; 979 struct sockaddr_in *remote = NULL; 980 int ret = 0; 981 982 MPASS(new_so != NULL); 983 984 if (c4iw_any_addr((struct sockaddr *)&master_lep->com.local_addr, 985 new_so->so_vnet)) { 986 /* Here we need to find the 'real_lep' that belongs to the 987 * incomming socket's network interface, such that the newly 988 * created 'ep' can be attached to the real 'lep'. 989 */ 990 real_lep = find_real_listen_ep(master_lep, new_so); 991 if (real_lep == NULL) { 992 CTR2(KTR_IW_CXGBE, "%s: Could not find the real listen " 993 "ep for sock: %p", __func__, new_so); 994 log(LOG_ERR,"%s: Could not find the real listen ep for " 995 "sock: %p\n", __func__, new_so); 996 /* FIXME: properly free the 'new_so' in failure case. 997 * Use of soabort() and soclose() are not legal 998 * here(before soaccept()). 999 */ 1000 return; 1001 } 1002 } else /* for Non-Wildcard address, master_lep is always the real_lep */ 1003 real_lep = master_lep; 1004 1005 new_ep = alloc_ep(sizeof(*new_ep), GFP_KERNEL); 1006 1007 CTR6(KTR_IW_CXGBE, "%s: master_lep %p, real_lep: %p, new ep %p, " 1008 "listening so %p, new so %p", __func__, master_lep, real_lep, 1009 new_ep, master_lep->com.so, new_so); 1010 1011 new_ep->com.dev = real_lep->com.dev; 1012 new_ep->com.so = new_so; 1013 new_ep->com.cm_id = NULL; 1014 new_ep->com.thread = real_lep->com.thread; 1015 new_ep->parent_ep = real_lep; 1016 1017 GET_LOCAL_ADDR(&new_ep->com.local_addr, new_so); 1018 GET_REMOTE_ADDR(&new_ep->com.remote_addr, new_so); 1019 c4iw_get_ep(&real_lep->com); 1020 init_timer(&new_ep->timer); 1021 new_ep->com.state = MPA_REQ_WAIT; 1022 1023 setiwsockopt(new_so); 1024 ret = soaccept(new_so, (struct sockaddr **)&remote); 1025 if (ret != 0) { 1026 CTR4(KTR_IW_CXGBE, 1027 "%s:listen sock:%p, new sock:%p, ret:%d", 1028 __func__, master_lep->com.so, new_so, ret); 1029 if (remote != NULL) 1030 free(remote, M_SONAME); 1031 soclose(new_so); 1032 c4iw_put_ep(&new_ep->com); 1033 c4iw_put_ep(&real_lep->com); 1034 return; 1035 } 1036 free(remote, M_SONAME); 1037 1038 START_EP_TIMER(new_ep); 1039 1040 /* MPA request might have been queued up on the socket already, so we 1041 * initialize the socket/upcall_handler under lock to prevent processing 1042 * MPA request on another thread(via process_req()) simultaneously. 1043 */ 1044 c4iw_get_ep(&new_ep->com); /* Dereferenced at the end below, this is to 1045 avoid freeing of ep before ep unlock. */ 1046 mutex_lock(&new_ep->com.mutex); 1047 init_iwarp_socket(new_so, &new_ep->com); 1048 1049 ret = process_mpa_request(new_ep); 1050 if (ret) { 1051 /* ABORT */ 1052 c4iw_ep_disconnect(new_ep, 1, GFP_KERNEL); 1053 c4iw_put_ep(&real_lep->com); 1054 } 1055 mutex_unlock(&new_ep->com.mutex); 1056 c4iw_put_ep(&new_ep->com); 1057 return; 1058 } 1059 1060 static int 1061 add_ep_to_req_list(struct c4iw_ep *ep, int new_ep_event) 1062 { 1063 unsigned long flag; 1064 1065 spin_lock_irqsave(&req_lock, flag); 1066 if (ep && ep->com.so) { 1067 ep->com.ep_events |= new_ep_event; 1068 if (!ep->com.entry.tqe_prev) { 1069 c4iw_get_ep(&ep->com); 1070 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry); 1071 queue_work(c4iw_taskq, &c4iw_task); 1072 } 1073 } 1074 spin_unlock_irqrestore(&req_lock, flag); 1075 1076 return (0); 1077 } 1078 1079 static int 1080 c4iw_so_upcall(struct socket *so, void *arg, int waitflag) 1081 { 1082 struct c4iw_ep *ep = arg; 1083 1084 CTR6(KTR_IW_CXGBE, 1085 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p", 1086 __func__, so, so->so_state, ep, states[ep->com.state], 1087 ep->com.entry.tqe_prev); 1088 1089 MPASS(ep->com.so == so); 1090 /* 1091 * Wake up any threads waiting in rdma_init()/rdma_fini(), 1092 * with locks held. 1093 */ 1094 if (so->so_error || (ep->com.dev->rdev.flags & T4_FATAL_ERROR)) 1095 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 1096 add_ep_to_req_list(ep, C4IW_EVENT_SOCKET); 1097 1098 return (SU_OK); 1099 } 1100 1101 1102 static int 1103 terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) 1104 { 1105 struct adapter *sc = iq->adapter; 1106 const struct cpl_rdma_terminate *cpl = mtod(m, const void *); 1107 unsigned int tid = GET_TID(cpl); 1108 struct toepcb *toep = lookup_tid(sc, tid); 1109 struct socket *so; 1110 struct c4iw_ep *ep; 1111 1112 INP_WLOCK(toep->inp); 1113 so = inp_inpcbtosocket(toep->inp); 1114 ep = so->so_rcv.sb_upcallarg; 1115 INP_WUNLOCK(toep->inp); 1116 1117 CTR3(KTR_IW_CXGBE, "%s: so %p, ep %p", __func__, so, ep); 1118 add_ep_to_req_list(ep, C4IW_EVENT_TERM); 1119 1120 return 0; 1121 } 1122 1123 static void 1124 process_socket_event(struct c4iw_ep *ep) 1125 { 1126 int state = ep->com.state; 1127 struct socket *so = ep->com.so; 1128 1129 if (ep->com.state == DEAD) { 1130 CTR3(KTR_IW_CXGBE, "%s: Pending socket event discarded " 1131 "ep %p ep_state %s", __func__, ep, states[state]); 1132 return; 1133 } 1134 1135 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, " 1136 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state, 1137 so->so_error, so->so_rcv.sb_state, ep, states[state]); 1138 1139 if (state == CONNECTING) { 1140 process_connected(ep); 1141 return; 1142 } 1143 1144 if (state == LISTEN) { 1145 struct c4iw_listen_ep *lep = (struct c4iw_listen_ep *)ep; 1146 struct socket *listen_so = so, *new_so = NULL; 1147 int error = 0; 1148 1149 SOLISTEN_LOCK(listen_so); 1150 do { 1151 error = solisten_dequeue(listen_so, &new_so, 1152 SOCK_NONBLOCK); 1153 if (error) { 1154 CTR4(KTR_IW_CXGBE, "%s: lep %p listen_so %p " 1155 "error %d", __func__, lep, listen_so, 1156 error); 1157 return; 1158 } 1159 process_newconn(lep, new_so); 1160 1161 /* solisten_dequeue() unlocks while return, so aquire 1162 * lock again for sol_qlen and also for next iteration. 1163 */ 1164 SOLISTEN_LOCK(listen_so); 1165 } while (listen_so->sol_qlen); 1166 SOLISTEN_UNLOCK(listen_so); 1167 1168 return; 1169 } 1170 1171 /* connection error */ 1172 if (so->so_error) { 1173 process_conn_error(ep); 1174 return; 1175 } 1176 1177 /* peer close */ 1178 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state <= CLOSING) { 1179 process_peer_close(ep); 1180 /* 1181 * check whether socket disconnect event is pending before 1182 * returning. Fallthrough if yes. 1183 */ 1184 if (!(so->so_state & SS_ISDISCONNECTED)) 1185 return; 1186 } 1187 1188 /* close complete */ 1189 if (so->so_state & SS_ISDISCONNECTED) { 1190 process_close_complete(ep); 1191 return; 1192 } 1193 1194 /* rx data */ 1195 if (sbused(&ep->com.so->so_rcv)) { 1196 process_data(ep); 1197 return; 1198 } 1199 1200 /* Socket events for 'MPA Request Received' and 'Close Complete' 1201 * were already processed earlier in their previous events handlers. 1202 * Hence, these socket events are skipped. 1203 * And any other socket events must have handled above. 1204 */ 1205 MPASS((ep->com.state == MPA_REQ_RCVD) || (ep->com.state == MORIBUND)); 1206 1207 if ((ep->com.state != MPA_REQ_RCVD) && (ep->com.state != MORIBUND)) 1208 log(LOG_ERR, "%s: Unprocessed socket event so %p, " 1209 "so_state 0x%x, so_err %d, sb_state 0x%x, ep %p, ep_state %s\n", 1210 __func__, so, so->so_state, so->so_error, so->so_rcv.sb_state, 1211 ep, states[state]); 1212 1213 } 1214 1215 SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 1216 "iw_cxgbe driver parameters"); 1217 1218 static int dack_mode = 0; 1219 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RWTUN, &dack_mode, 0, 1220 "Delayed ack mode (default = 0)"); 1221 1222 int c4iw_max_read_depth = 8; 1223 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RWTUN, &c4iw_max_read_depth, 0, 1224 "Per-connection max ORD/IRD (default = 8)"); 1225 1226 static int enable_tcp_timestamps; 1227 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RWTUN, &enable_tcp_timestamps, 0, 1228 "Enable tcp timestamps (default = 0)"); 1229 1230 static int enable_tcp_sack; 1231 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RWTUN, &enable_tcp_sack, 0, 1232 "Enable tcp SACK (default = 0)"); 1233 1234 static int enable_tcp_window_scaling = 1; 1235 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RWTUN, &enable_tcp_window_scaling, 0, 1236 "Enable tcp window scaling (default = 1)"); 1237 1238 int c4iw_debug = 0; 1239 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RWTUN, &c4iw_debug, 0, 1240 "Enable debug logging (default = 0)"); 1241 1242 static int peer2peer = 1; 1243 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RWTUN, &peer2peer, 0, 1244 "Support peer2peer ULPs (default = 1)"); 1245 1246 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 1247 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RWTUN, &p2p_type, 0, 1248 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)"); 1249 1250 static int ep_timeout_secs = 60; 1251 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RWTUN, &ep_timeout_secs, 0, 1252 "CM Endpoint operation timeout in seconds (default = 60)"); 1253 1254 static int mpa_rev = 1; 1255 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RWTUN, &mpa_rev, 0, 1256 "MPA Revision, 0 supports amso1100, 1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)"); 1257 1258 static int markers_enabled; 1259 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RWTUN, &markers_enabled, 0, 1260 "Enable MPA MARKERS (default(0) = disabled)"); 1261 1262 static int crc_enabled = 1; 1263 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RWTUN, &crc_enabled, 0, 1264 "Enable MPA CRC (default(1) = enabled)"); 1265 1266 static int rcv_win = 256 * 1024; 1267 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RWTUN, &rcv_win, 0, 1268 "TCP receive window in bytes (default = 256KB)"); 1269 1270 static int snd_win = 128 * 1024; 1271 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RWTUN, &snd_win, 0, 1272 "TCP send window in bytes (default = 128KB)"); 1273 1274 int use_dsgl = 1; 1275 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, use_dsgl, CTLFLAG_RWTUN, &use_dsgl, 0, 1276 "Use DSGL for PBL/FastReg (default=1)"); 1277 1278 int inline_threshold = 128; 1279 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, inline_threshold, CTLFLAG_RWTUN, &inline_threshold, 0, 1280 "inline vs dsgl threshold (default=128)"); 1281 1282 static int reuseaddr = 0; 1283 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, reuseaddr, CTLFLAG_RWTUN, &reuseaddr, 0, 1284 "Enable SO_REUSEADDR & SO_REUSEPORT socket options on all iWARP client connections(default = 0)"); 1285 1286 static void 1287 start_ep_timer(struct c4iw_ep *ep) 1288 { 1289 1290 if (timer_pending(&ep->timer)) { 1291 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep); 1292 printk(KERN_ERR "%s timer already started! ep %p\n", __func__, 1293 ep); 1294 return; 1295 } 1296 clear_bit(TIMEOUT, &ep->com.flags); 1297 c4iw_get_ep(&ep->com); 1298 ep->timer.expires = jiffies + ep_timeout_secs * HZ; 1299 ep->timer.data = (unsigned long)ep; 1300 ep->timer.function = ep_timeout; 1301 add_timer(&ep->timer); 1302 } 1303 1304 static int 1305 stop_ep_timer(struct c4iw_ep *ep) 1306 { 1307 1308 del_timer_sync(&ep->timer); 1309 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 1310 c4iw_put_ep(&ep->com); 1311 return 0; 1312 } 1313 return 1; 1314 } 1315 1316 static void * 1317 alloc_ep(int size, gfp_t gfp) 1318 { 1319 struct c4iw_ep_common *epc; 1320 1321 epc = kzalloc(size, gfp); 1322 if (epc == NULL) 1323 return (NULL); 1324 1325 kref_init(&epc->kref); 1326 mutex_init(&epc->mutex); 1327 c4iw_init_wr_wait(&epc->wr_wait); 1328 1329 return (epc); 1330 } 1331 1332 void _c4iw_free_ep(struct kref *kref) 1333 { 1334 struct c4iw_ep *ep; 1335 #if defined(KTR) || defined(INVARIANTS) 1336 struct c4iw_ep_common *epc; 1337 #endif 1338 1339 ep = container_of(kref, struct c4iw_ep, com.kref); 1340 #if defined(KTR) || defined(INVARIANTS) 1341 epc = &ep->com; 1342 #endif 1343 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list", 1344 __func__, epc)); 1345 if (test_bit(QP_REFERENCED, &ep->com.flags)) 1346 deref_qp(ep); 1347 CTR4(KTR_IW_CXGBE, "%s: ep %p, history 0x%lx, flags 0x%lx", 1348 __func__, ep, epc->history, epc->flags); 1349 kfree(ep); 1350 } 1351 1352 static void release_ep_resources(struct c4iw_ep *ep) 1353 { 1354 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep); 1355 set_bit(RELEASE_RESOURCES, &ep->com.flags); 1356 c4iw_put_ep(&ep->com); 1357 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep); 1358 } 1359 1360 static int 1361 send_mpa_req(struct c4iw_ep *ep) 1362 { 1363 int mpalen; 1364 struct mpa_message *mpa; 1365 struct mpa_v2_conn_params mpa_v2_params; 1366 struct mbuf *m; 1367 char mpa_rev_to_use = mpa_rev; 1368 int err = 0; 1369 1370 if (ep->retry_with_mpa_v1) 1371 mpa_rev_to_use = 1; 1372 mpalen = sizeof(*mpa) + ep->plen; 1373 if (mpa_rev_to_use == 2) 1374 mpalen += sizeof(struct mpa_v2_conn_params); 1375 1376 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1377 if (mpa == NULL) { 1378 err = -ENOMEM; 1379 CTR3(KTR_IW_CXGBE, "%s:smr1 ep: %p , error: %d", 1380 __func__, ep, err); 1381 goto err; 1382 } 1383 1384 memset(mpa, 0, mpalen); 1385 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 1386 mpa->flags = (crc_enabled ? MPA_CRC : 0) | 1387 (markers_enabled ? MPA_MARKERS : 0) | 1388 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); 1389 mpa->private_data_size = htons(ep->plen); 1390 mpa->revision = mpa_rev_to_use; 1391 1392 if (mpa_rev_to_use == 1) { 1393 ep->tried_with_mpa_v1 = 1; 1394 ep->retry_with_mpa_v1 = 0; 1395 } 1396 1397 if (mpa_rev_to_use == 2) { 1398 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1399 sizeof(struct mpa_v2_conn_params)); 1400 mpa_v2_params.ird = htons((u16)ep->ird); 1401 mpa_v2_params.ord = htons((u16)ep->ord); 1402 1403 if (peer2peer) { 1404 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1405 1406 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1407 mpa_v2_params.ord |= 1408 htons(MPA_V2_RDMA_WRITE_RTR); 1409 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1410 mpa_v2_params.ord |= 1411 htons(MPA_V2_RDMA_READ_RTR); 1412 } 1413 } 1414 memcpy(mpa->private_data, &mpa_v2_params, 1415 sizeof(struct mpa_v2_conn_params)); 1416 1417 if (ep->plen) { 1418 1419 memcpy(mpa->private_data + 1420 sizeof(struct mpa_v2_conn_params), 1421 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1422 } 1423 } else { 1424 1425 if (ep->plen) 1426 memcpy(mpa->private_data, 1427 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1428 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep); 1429 } 1430 1431 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1432 if (m == NULL) { 1433 err = -ENOMEM; 1434 CTR3(KTR_IW_CXGBE, "%s:smr2 ep: %p , error: %d", 1435 __func__, ep, err); 1436 free(mpa, M_CXGBE); 1437 goto err; 1438 } 1439 m_copyback(m, 0, mpalen, (void *)mpa); 1440 free(mpa, M_CXGBE); 1441 1442 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1443 ep->com.thread); 1444 if (err) { 1445 CTR3(KTR_IW_CXGBE, "%s:smr3 ep: %p , error: %d", 1446 __func__, ep, err); 1447 goto err; 1448 } 1449 1450 START_EP_TIMER(ep); 1451 ep->com.state = MPA_REQ_SENT; 1452 ep->mpa_attr.initiator = 1; 1453 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1454 return 0; 1455 err: 1456 connect_reply_upcall(ep, err); 1457 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1458 return err; 1459 } 1460 1461 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 1462 { 1463 int mpalen ; 1464 struct mpa_message *mpa; 1465 struct mpa_v2_conn_params mpa_v2_params; 1466 struct mbuf *m; 1467 int err; 1468 1469 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid, 1470 ep->plen); 1471 1472 mpalen = sizeof(*mpa) + plen; 1473 1474 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1475 1476 mpalen += sizeof(struct mpa_v2_conn_params); 1477 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep, 1478 ep->mpa_attr.version, mpalen); 1479 } 1480 1481 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1482 if (mpa == NULL) 1483 return (-ENOMEM); 1484 1485 memset(mpa, 0, mpalen); 1486 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1487 mpa->flags = MPA_REJECT; 1488 mpa->revision = mpa_rev; 1489 mpa->private_data_size = htons(plen); 1490 1491 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1492 1493 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1494 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1495 sizeof(struct mpa_v2_conn_params)); 1496 mpa_v2_params.ird = htons(((u16)ep->ird) | 1497 (peer2peer ? MPA_V2_PEER2PEER_MODEL : 1498 0)); 1499 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 1500 (p2p_type == 1501 FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 1502 MPA_V2_RDMA_WRITE_RTR : p2p_type == 1503 FW_RI_INIT_P2PTYPE_READ_REQ ? 1504 MPA_V2_RDMA_READ_RTR : 0) : 0)); 1505 memcpy(mpa->private_data, &mpa_v2_params, 1506 sizeof(struct mpa_v2_conn_params)); 1507 1508 if (ep->plen) 1509 memcpy(mpa->private_data + 1510 sizeof(struct mpa_v2_conn_params), pdata, plen); 1511 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep, 1512 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen); 1513 } else 1514 if (plen) 1515 memcpy(mpa->private_data, pdata, plen); 1516 1517 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1518 if (m == NULL) { 1519 free(mpa, M_CXGBE); 1520 return (-ENOMEM); 1521 } 1522 m_copyback(m, 0, mpalen, (void *)mpa); 1523 free(mpa, M_CXGBE); 1524 1525 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread); 1526 if (!err) 1527 ep->snd_seq += mpalen; 1528 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err); 1529 return err; 1530 } 1531 1532 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 1533 { 1534 int mpalen; 1535 struct mpa_message *mpa; 1536 struct mbuf *m; 1537 struct mpa_v2_conn_params mpa_v2_params; 1538 int err; 1539 1540 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep); 1541 1542 mpalen = sizeof(*mpa) + plen; 1543 1544 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1545 1546 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep, 1547 ep->mpa_attr.version); 1548 mpalen += sizeof(struct mpa_v2_conn_params); 1549 } 1550 1551 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1552 if (mpa == NULL) 1553 return (-ENOMEM); 1554 1555 memset(mpa, 0, sizeof(*mpa)); 1556 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1557 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 1558 (markers_enabled ? MPA_MARKERS : 0); 1559 mpa->revision = ep->mpa_attr.version; 1560 mpa->private_data_size = htons(plen); 1561 1562 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1563 1564 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1565 mpa->private_data_size += 1566 htons(sizeof(struct mpa_v2_conn_params)); 1567 mpa_v2_params.ird = htons((u16)ep->ird); 1568 mpa_v2_params.ord = htons((u16)ep->ord); 1569 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep, 1570 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord); 1571 1572 if (peer2peer && (ep->mpa_attr.p2p_type != 1573 FW_RI_INIT_P2PTYPE_DISABLED)) { 1574 1575 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1576 1577 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1578 1579 mpa_v2_params.ord |= 1580 htons(MPA_V2_RDMA_WRITE_RTR); 1581 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d", 1582 __func__, ep, p2p_type, mpa_v2_params.ird, 1583 mpa_v2_params.ord); 1584 } 1585 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1586 1587 mpa_v2_params.ord |= 1588 htons(MPA_V2_RDMA_READ_RTR); 1589 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d", 1590 __func__, ep, p2p_type, mpa_v2_params.ird, 1591 mpa_v2_params.ord); 1592 } 1593 } 1594 1595 memcpy(mpa->private_data, &mpa_v2_params, 1596 sizeof(struct mpa_v2_conn_params)); 1597 1598 if (ep->plen) 1599 memcpy(mpa->private_data + 1600 sizeof(struct mpa_v2_conn_params), pdata, plen); 1601 } else 1602 if (plen) 1603 memcpy(mpa->private_data, pdata, plen); 1604 1605 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1606 if (m == NULL) { 1607 free(mpa, M_CXGBE); 1608 return (-ENOMEM); 1609 } 1610 m_copyback(m, 0, mpalen, (void *)mpa); 1611 free(mpa, M_CXGBE); 1612 1613 1614 ep->com.state = MPA_REP_SENT; 1615 ep->snd_seq += mpalen; 1616 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1617 ep->com.thread); 1618 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err); 1619 return err; 1620 } 1621 1622 1623 1624 static void close_complete_upcall(struct c4iw_ep *ep, int status) 1625 { 1626 struct iw_cm_event event; 1627 1628 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep); 1629 memset(&event, 0, sizeof(event)); 1630 event.event = IW_CM_EVENT_CLOSE; 1631 event.status = status; 1632 1633 if (ep->com.cm_id) { 1634 1635 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep); 1636 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1637 deref_cm_id(&ep->com); 1638 set_bit(CLOSE_UPCALL, &ep->com.history); 1639 } 1640 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep); 1641 } 1642 1643 static int 1644 send_abort(struct c4iw_ep *ep) 1645 { 1646 struct socket *so = ep->com.so; 1647 struct sockopt sopt; 1648 int rc; 1649 struct linger l; 1650 1651 CTR5(KTR_IW_CXGBE, "%s ep %p so %p state %s tid %d", __func__, ep, so, 1652 states[ep->com.state], ep->hwtid); 1653 1654 l.l_onoff = 1; 1655 l.l_linger = 0; 1656 1657 /* linger_time of 0 forces RST to be sent */ 1658 sopt.sopt_dir = SOPT_SET; 1659 sopt.sopt_level = SOL_SOCKET; 1660 sopt.sopt_name = SO_LINGER; 1661 sopt.sopt_val = (caddr_t)&l; 1662 sopt.sopt_valsize = sizeof l; 1663 sopt.sopt_td = NULL; 1664 rc = -sosetopt(so, &sopt); 1665 if (rc != 0) { 1666 log(LOG_ERR, "%s: sosetopt(%p, linger = 0) failed with %d.\n", 1667 __func__, so, rc); 1668 } 1669 1670 uninit_iwarp_socket(so); 1671 soclose(so); 1672 set_bit(ABORT_CONN, &ep->com.history); 1673 1674 /* 1675 * TBD: iw_cxgbe driver should receive ABORT reply for every ABORT 1676 * request it has sent. But the current TOE driver is not propagating 1677 * this ABORT reply event (via do_abort_rpl) to iw_cxgbe. So as a work- 1678 * around de-refererece 'ep' here instead of doing it in abort_rpl() 1679 * handler(not yet implemented) of iw_cxgbe driver. 1680 */ 1681 release_ep_resources(ep); 1682 ep->com.state = DEAD; 1683 1684 return (0); 1685 } 1686 1687 static void peer_close_upcall(struct c4iw_ep *ep) 1688 { 1689 struct iw_cm_event event; 1690 1691 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep); 1692 memset(&event, 0, sizeof(event)); 1693 event.event = IW_CM_EVENT_DISCONNECT; 1694 1695 if (ep->com.cm_id) { 1696 1697 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep); 1698 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1699 set_bit(DISCONN_UPCALL, &ep->com.history); 1700 } 1701 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep); 1702 } 1703 1704 static void peer_abort_upcall(struct c4iw_ep *ep) 1705 { 1706 struct iw_cm_event event; 1707 1708 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep); 1709 memset(&event, 0, sizeof(event)); 1710 event.event = IW_CM_EVENT_CLOSE; 1711 event.status = -ECONNRESET; 1712 1713 if (ep->com.cm_id) { 1714 1715 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep); 1716 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1717 deref_cm_id(&ep->com); 1718 set_bit(ABORT_UPCALL, &ep->com.history); 1719 } 1720 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep); 1721 } 1722 1723 static void connect_reply_upcall(struct c4iw_ep *ep, int status) 1724 { 1725 struct iw_cm_event event; 1726 1727 CTR3(KTR_IW_CXGBE, "%s:cruB %p, status: %d", __func__, ep, status); 1728 memset(&event, 0, sizeof(event)); 1729 event.event = IW_CM_EVENT_CONNECT_REPLY; 1730 event.status = ((status == -ECONNABORTED) || (status == -EPIPE)) ? 1731 -ECONNRESET : status; 1732 event.local_addr = ep->com.local_addr; 1733 event.remote_addr = ep->com.remote_addr; 1734 1735 if ((status == 0) || (status == -ECONNREFUSED)) { 1736 1737 if (!ep->tried_with_mpa_v1) { 1738 1739 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep); 1740 /* this means MPA_v2 is used */ 1741 event.ord = ep->ird; 1742 event.ird = ep->ord; 1743 event.private_data_len = ep->plen - 1744 sizeof(struct mpa_v2_conn_params); 1745 event.private_data = ep->mpa_pkt + 1746 sizeof(struct mpa_message) + 1747 sizeof(struct mpa_v2_conn_params); 1748 } else { 1749 1750 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep); 1751 /* this means MPA_v1 is used */ 1752 event.ord = c4iw_max_read_depth; 1753 event.ird = c4iw_max_read_depth; 1754 event.private_data_len = ep->plen; 1755 event.private_data = ep->mpa_pkt + 1756 sizeof(struct mpa_message); 1757 } 1758 } 1759 1760 if (ep->com.cm_id) { 1761 1762 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep); 1763 set_bit(CONN_RPL_UPCALL, &ep->com.history); 1764 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1765 } 1766 1767 if(status == -ECONNABORTED) { 1768 1769 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status); 1770 return; 1771 } 1772 1773 if (status < 0) { 1774 1775 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status); 1776 deref_cm_id(&ep->com); 1777 } 1778 1779 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep); 1780 } 1781 1782 static int connect_request_upcall(struct c4iw_ep *ep) 1783 { 1784 struct iw_cm_event event; 1785 int ret; 1786 1787 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep, 1788 ep->tried_with_mpa_v1); 1789 1790 memset(&event, 0, sizeof(event)); 1791 event.event = IW_CM_EVENT_CONNECT_REQUEST; 1792 event.local_addr = ep->com.local_addr; 1793 event.remote_addr = ep->com.remote_addr; 1794 event.provider_data = ep; 1795 1796 if (!ep->tried_with_mpa_v1) { 1797 /* this means MPA_v2 is used */ 1798 event.ord = ep->ord; 1799 event.ird = ep->ird; 1800 event.private_data_len = ep->plen - 1801 sizeof(struct mpa_v2_conn_params); 1802 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 1803 sizeof(struct mpa_v2_conn_params); 1804 } else { 1805 1806 /* this means MPA_v1 is used. Send max supported */ 1807 event.ord = c4iw_max_read_depth; 1808 event.ird = c4iw_max_read_depth; 1809 event.private_data_len = ep->plen; 1810 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 1811 } 1812 1813 c4iw_get_ep(&ep->com); 1814 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, 1815 &event); 1816 if(ret) { 1817 CTR3(KTR_IW_CXGBE, "%s: ep %p, Failure while notifying event to" 1818 " IWCM, err:%d", __func__, ep, ret); 1819 c4iw_put_ep(&ep->com); 1820 } else 1821 /* Dereference parent_ep only in success case. 1822 * In case of failure, parent_ep is dereferenced by the caller 1823 * of process_mpa_request(). 1824 */ 1825 c4iw_put_ep(&ep->parent_ep->com); 1826 1827 set_bit(CONNREQ_UPCALL, &ep->com.history); 1828 return ret; 1829 } 1830 1831 static void established_upcall(struct c4iw_ep *ep) 1832 { 1833 struct iw_cm_event event; 1834 1835 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep); 1836 memset(&event, 0, sizeof(event)); 1837 event.event = IW_CM_EVENT_ESTABLISHED; 1838 event.ird = ep->ord; 1839 event.ord = ep->ird; 1840 1841 if (ep->com.cm_id) { 1842 1843 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep); 1844 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1845 set_bit(ESTAB_UPCALL, &ep->com.history); 1846 } 1847 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep); 1848 } 1849 1850 1851 #define RELAXED_IRD_NEGOTIATION 1 1852 1853 /* 1854 * process_mpa_reply - process streaming mode MPA reply 1855 * 1856 * Returns: 1857 * 1858 * 0 upon success indicating a connect request was delivered to the ULP 1859 * or the mpa request is incomplete but valid so far. 1860 * 1861 * 1 if a failure requires the caller to close the connection. 1862 * 1863 * 2 if a failure requires the caller to abort the connection. 1864 */ 1865 static int process_mpa_reply(struct c4iw_ep *ep) 1866 { 1867 struct mpa_message *mpa; 1868 struct mpa_v2_conn_params *mpa_v2_params; 1869 u16 plen; 1870 u16 resp_ird, resp_ord; 1871 u8 rtr_mismatch = 0, insuff_ird = 0; 1872 struct c4iw_qp_attributes attrs = {0}; 1873 enum c4iw_qp_attr_mask mask; 1874 int err; 1875 struct mbuf *top, *m; 1876 int flags = MSG_DONTWAIT; 1877 struct uio uio; 1878 int disconnect = 0; 1879 1880 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep); 1881 1882 /* 1883 * Stop mpa timer. If it expired, then 1884 * we ignore the MPA reply. process_timeout() 1885 * will abort the connection. 1886 */ 1887 if (STOP_EP_TIMER(ep)) 1888 return 0; 1889 1890 uio.uio_resid = 1000000; 1891 uio.uio_td = ep->com.thread; 1892 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags); 1893 1894 if (err) { 1895 1896 if (err == EWOULDBLOCK) { 1897 1898 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep); 1899 START_EP_TIMER(ep); 1900 return 0; 1901 } 1902 err = -err; 1903 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep); 1904 goto err; 1905 } 1906 1907 if (ep->com.so->so_rcv.sb_mb) { 1908 1909 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep); 1910 printf("%s data after soreceive called! so %p sb_mb %p top %p\n", 1911 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top); 1912 } 1913 1914 m = top; 1915 1916 do { 1917 1918 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep); 1919 /* 1920 * If we get more than the supported amount of private data 1921 * then we must fail this connection. 1922 */ 1923 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) { 1924 1925 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep, 1926 ep->mpa_pkt_len + m->m_len); 1927 err = (-EINVAL); 1928 goto err_stop_timer; 1929 } 1930 1931 /* 1932 * copy the new data into our accumulation buffer. 1933 */ 1934 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len])); 1935 ep->mpa_pkt_len += m->m_len; 1936 if (!m->m_next) 1937 m = m->m_nextpkt; 1938 else 1939 m = m->m_next; 1940 } while (m); 1941 1942 m_freem(top); 1943 /* 1944 * if we don't even have the mpa message, then bail. 1945 */ 1946 if (ep->mpa_pkt_len < sizeof(*mpa)) { 1947 return 0; 1948 } 1949 mpa = (struct mpa_message *) ep->mpa_pkt; 1950 1951 /* Validate MPA header. */ 1952 if (mpa->revision > mpa_rev) { 1953 1954 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep, 1955 mpa->revision, mpa_rev); 1956 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, " 1957 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1958 err = -EPROTO; 1959 goto err_stop_timer; 1960 } 1961 1962 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1963 1964 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep); 1965 err = -EPROTO; 1966 goto err_stop_timer; 1967 } 1968 1969 plen = ntohs(mpa->private_data_size); 1970 1971 /* 1972 * Fail if there's too much private data. 1973 */ 1974 if (plen > MPA_MAX_PRIVATE_DATA) { 1975 1976 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep); 1977 err = -EPROTO; 1978 goto err_stop_timer; 1979 } 1980 1981 /* 1982 * If plen does not account for pkt size 1983 */ 1984 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1985 1986 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep); 1987 STOP_EP_TIMER(ep); 1988 err = -EPROTO; 1989 goto err_stop_timer; 1990 } 1991 1992 ep->plen = (u8) plen; 1993 1994 /* 1995 * If we don't have all the pdata yet, then bail. 1996 * We'll continue process when more data arrives. 1997 */ 1998 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) { 1999 2000 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep); 2001 return 0; 2002 } 2003 2004 if (mpa->flags & MPA_REJECT) { 2005 2006 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep); 2007 err = -ECONNREFUSED; 2008 goto err_stop_timer; 2009 } 2010 2011 /* 2012 * If we get here we have accumulated the entire mpa 2013 * start reply message including private data. And 2014 * the MPA header is valid. 2015 */ 2016 ep->com.state = FPDU_MODE; 2017 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2018 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2019 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2020 ep->mpa_attr.version = mpa->revision; 2021 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2022 2023 if (mpa->revision == 2) { 2024 2025 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep); 2026 ep->mpa_attr.enhanced_rdma_conn = 2027 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2028 2029 if (ep->mpa_attr.enhanced_rdma_conn) { 2030 2031 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep); 2032 mpa_v2_params = (struct mpa_v2_conn_params *) 2033 (ep->mpa_pkt + sizeof(*mpa)); 2034 resp_ird = ntohs(mpa_v2_params->ird) & 2035 MPA_V2_IRD_ORD_MASK; 2036 resp_ord = ntohs(mpa_v2_params->ord) & 2037 MPA_V2_IRD_ORD_MASK; 2038 2039 /* 2040 * This is a double-check. Ideally, below checks are 2041 * not required since ird/ord stuff has been taken 2042 * care of in c4iw_accept_cr 2043 */ 2044 if (ep->ird < resp_ord) { 2045 if (RELAXED_IRD_NEGOTIATION && resp_ord <= 2046 ep->com.dev->rdev.adap->params.max_ordird_qp) 2047 ep->ird = resp_ord; 2048 else 2049 insuff_ird = 1; 2050 } else if (ep->ird > resp_ord) { 2051 ep->ird = resp_ord; 2052 } 2053 if (ep->ord > resp_ird) { 2054 if (RELAXED_IRD_NEGOTIATION) 2055 ep->ord = resp_ird; 2056 else 2057 insuff_ird = 1; 2058 } 2059 if (insuff_ird) { 2060 err = -ENOMEM; 2061 ep->ird = resp_ord; 2062 ep->ord = resp_ird; 2063 } 2064 2065 if (ntohs(mpa_v2_params->ird) & 2066 MPA_V2_PEER2PEER_MODEL) { 2067 2068 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep); 2069 if (ntohs(mpa_v2_params->ord) & 2070 MPA_V2_RDMA_WRITE_RTR) { 2071 2072 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep); 2073 ep->mpa_attr.p2p_type = 2074 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2075 } 2076 else if (ntohs(mpa_v2_params->ord) & 2077 MPA_V2_RDMA_READ_RTR) { 2078 2079 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep); 2080 ep->mpa_attr.p2p_type = 2081 FW_RI_INIT_P2PTYPE_READ_REQ; 2082 } 2083 } 2084 } 2085 } else { 2086 2087 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep); 2088 2089 if (mpa->revision == 1) { 2090 2091 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep); 2092 2093 if (peer2peer) { 2094 2095 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep); 2096 ep->mpa_attr.p2p_type = p2p_type; 2097 } 2098 } 2099 } 2100 2101 if (set_tcpinfo(ep)) { 2102 2103 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep); 2104 printf("%s set_tcpinfo error\n", __func__); 2105 err = -ECONNRESET; 2106 goto err; 2107 } 2108 2109 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, " 2110 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__, 2111 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2112 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 2113 ep->mpa_attr.p2p_type); 2114 2115 /* 2116 * If responder's RTR does not match with that of initiator, assign 2117 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 2118 * generated when moving QP to RTS state. 2119 * A TERM message will be sent after QP has moved to RTS state 2120 */ 2121 if ((ep->mpa_attr.version == 2) && peer2peer && 2122 (ep->mpa_attr.p2p_type != p2p_type)) { 2123 2124 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep); 2125 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2126 rtr_mismatch = 1; 2127 } 2128 2129 2130 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2131 attrs.mpa_attr = ep->mpa_attr; 2132 attrs.max_ird = ep->ird; 2133 attrs.max_ord = ep->ord; 2134 attrs.llp_stream_handle = ep; 2135 attrs.next_state = C4IW_QP_STATE_RTS; 2136 2137 mask = C4IW_QP_ATTR_NEXT_STATE | 2138 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 2139 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 2140 2141 /* bind QP and TID with INIT_WR */ 2142 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2143 2144 if (err) { 2145 2146 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep); 2147 goto err; 2148 } 2149 2150 /* 2151 * If responder's RTR requirement did not match with what initiator 2152 * supports, generate TERM message 2153 */ 2154 if (rtr_mismatch) { 2155 2156 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep); 2157 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 2158 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2159 attrs.ecode = MPA_NOMATCH_RTR; 2160 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2161 attrs.send_term = 1; 2162 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2163 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2164 err = -ENOMEM; 2165 disconnect = 1; 2166 goto out; 2167 } 2168 2169 /* 2170 * Generate TERM if initiator IRD is not sufficient for responder 2171 * provided ORD. Currently, we do the same behaviour even when 2172 * responder provided IRD is also not sufficient as regards to 2173 * initiator ORD. 2174 */ 2175 if (insuff_ird) { 2176 2177 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep); 2178 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 2179 __func__); 2180 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2181 attrs.ecode = MPA_INSUFF_IRD; 2182 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2183 attrs.send_term = 1; 2184 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2185 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2186 err = -ENOMEM; 2187 disconnect = 1; 2188 goto out; 2189 } 2190 goto out; 2191 err_stop_timer: 2192 STOP_EP_TIMER(ep); 2193 err: 2194 disconnect = 2; 2195 out: 2196 connect_reply_upcall(ep, err); 2197 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep); 2198 return disconnect; 2199 } 2200 2201 /* 2202 * process_mpa_request - process streaming mode MPA request 2203 * 2204 * Returns: 2205 * 2206 * 0 upon success indicating a connect request was delivered to the ULP 2207 * or the mpa request is incomplete but valid so far. 2208 * 2209 * 1 if a failure requires the caller to close the connection. 2210 * 2211 * 2 if a failure requires the caller to abort the connection. 2212 */ 2213 static int 2214 process_mpa_request(struct c4iw_ep *ep) 2215 { 2216 struct mpa_message *mpa; 2217 struct mpa_v2_conn_params *mpa_v2_params; 2218 u16 plen; 2219 int flags = MSG_DONTWAIT; 2220 int rc; 2221 struct iovec iov; 2222 struct uio uio; 2223 enum c4iw_ep_state state = ep->com.state; 2224 2225 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]); 2226 2227 if (state != MPA_REQ_WAIT) 2228 return 0; 2229 2230 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len]; 2231 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2232 uio.uio_iov = &iov; 2233 uio.uio_iovcnt = 1; 2234 uio.uio_offset = 0; 2235 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2236 uio.uio_segflg = UIO_SYSSPACE; 2237 uio.uio_rw = UIO_READ; 2238 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */ 2239 2240 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags); 2241 if (rc == EAGAIN) 2242 return 0; 2243 else if (rc) 2244 goto err_stop_timer; 2245 2246 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data", 2247 __func__, ep->com.so)); 2248 ep->mpa_pkt_len += uio.uio_offset; 2249 2250 /* 2251 * If we get more than the supported amount of private data then we must 2252 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another 2253 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last 2254 * byte is filled by the soreceive above. 2255 */ 2256 2257 /* Don't even have the MPA message. Wait for more data to arrive. */ 2258 if (ep->mpa_pkt_len < sizeof(*mpa)) 2259 return 0; 2260 mpa = (struct mpa_message *) ep->mpa_pkt; 2261 2262 /* 2263 * Validate MPA Header. 2264 */ 2265 if (mpa->revision > mpa_rev) { 2266 log(LOG_ERR, "%s: MPA version mismatch. Local = %d," 2267 " Received = %d\n", __func__, mpa_rev, mpa->revision); 2268 goto err_stop_timer; 2269 } 2270 2271 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) 2272 goto err_stop_timer; 2273 2274 /* 2275 * Fail if there's too much private data. 2276 */ 2277 plen = ntohs(mpa->private_data_size); 2278 if (plen > MPA_MAX_PRIVATE_DATA) 2279 goto err_stop_timer; 2280 2281 /* 2282 * If plen does not account for pkt size 2283 */ 2284 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) 2285 goto err_stop_timer; 2286 2287 ep->plen = (u8) plen; 2288 2289 /* 2290 * If we don't have all the pdata yet, then bail. 2291 */ 2292 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 2293 return 0; 2294 2295 /* 2296 * If we get here we have accumulated the entire mpa 2297 * start reply message including private data. 2298 */ 2299 ep->mpa_attr.initiator = 0; 2300 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2301 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2302 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2303 ep->mpa_attr.version = mpa->revision; 2304 if (mpa->revision == 1) 2305 ep->tried_with_mpa_v1 = 1; 2306 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2307 2308 if (mpa->revision == 2) { 2309 ep->mpa_attr.enhanced_rdma_conn = 2310 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2311 if (ep->mpa_attr.enhanced_rdma_conn) { 2312 mpa_v2_params = (struct mpa_v2_conn_params *) 2313 (ep->mpa_pkt + sizeof(*mpa)); 2314 ep->ird = ntohs(mpa_v2_params->ird) & 2315 MPA_V2_IRD_ORD_MASK; 2316 ep->ird = min_t(u32, ep->ird, 2317 cur_max_read_depth(ep->com.dev)); 2318 ep->ord = ntohs(mpa_v2_params->ord) & 2319 MPA_V2_IRD_ORD_MASK; 2320 ep->ord = min_t(u32, ep->ord, 2321 cur_max_read_depth(ep->com.dev)); 2322 CTR3(KTR_IW_CXGBE, "%s initiator ird %u ord %u", 2323 __func__, ep->ird, ep->ord); 2324 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) 2325 if (peer2peer) { 2326 if (ntohs(mpa_v2_params->ord) & 2327 MPA_V2_RDMA_WRITE_RTR) 2328 ep->mpa_attr.p2p_type = 2329 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2330 else if (ntohs(mpa_v2_params->ord) & 2331 MPA_V2_RDMA_READ_RTR) 2332 ep->mpa_attr.p2p_type = 2333 FW_RI_INIT_P2PTYPE_READ_REQ; 2334 } 2335 } 2336 } else if (mpa->revision == 1 && peer2peer) 2337 ep->mpa_attr.p2p_type = p2p_type; 2338 2339 if (set_tcpinfo(ep)) 2340 goto err_stop_timer; 2341 2342 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, " 2343 "xmit_marker_enabled = %d, version = %d", __func__, 2344 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2345 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); 2346 2347 ep->com.state = MPA_REQ_RCVD; 2348 STOP_EP_TIMER(ep); 2349 2350 /* drive upcall */ 2351 if (ep->parent_ep->com.state != DEAD) 2352 if (connect_request_upcall(ep)) 2353 goto err_out; 2354 return 0; 2355 2356 err_stop_timer: 2357 STOP_EP_TIMER(ep); 2358 err_out: 2359 return 2; 2360 } 2361 2362 /* 2363 * Upcall from the adapter indicating data has been transmitted. 2364 * For us its just the single MPA request or reply. We can now free 2365 * the skb holding the mpa message. 2366 */ 2367 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 2368 { 2369 #ifdef KTR 2370 int err; 2371 #endif 2372 struct c4iw_ep *ep = to_ep(cm_id); 2373 int abort = 0; 2374 2375 mutex_lock(&ep->com.mutex); 2376 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep); 2377 2378 if ((ep->com.state == DEAD) || 2379 (ep->com.state != MPA_REQ_RCVD)) { 2380 2381 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep); 2382 mutex_unlock(&ep->com.mutex); 2383 c4iw_put_ep(&ep->com); 2384 return -ECONNRESET; 2385 } 2386 set_bit(ULP_REJECT, &ep->com.history); 2387 2388 if (mpa_rev == 0) { 2389 2390 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep); 2391 abort = 1; 2392 } 2393 else { 2394 2395 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep); 2396 abort = send_mpa_reject(ep, pdata, pdata_len); 2397 } 2398 STOP_EP_TIMER(ep); 2399 #ifdef KTR 2400 err = c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2401 #else 2402 c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2403 #endif 2404 mutex_unlock(&ep->com.mutex); 2405 c4iw_put_ep(&ep->com); 2406 CTR3(KTR_IW_CXGBE, "%s:crc4 %p, err: %d", __func__, ep, err); 2407 return 0; 2408 } 2409 2410 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2411 { 2412 int err; 2413 struct c4iw_qp_attributes attrs = {0}; 2414 enum c4iw_qp_attr_mask mask; 2415 struct c4iw_ep *ep = to_ep(cm_id); 2416 struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 2417 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 2418 int abort = 0; 2419 2420 mutex_lock(&ep->com.mutex); 2421 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep); 2422 2423 if ((ep->com.state == DEAD) || 2424 (ep->com.state != MPA_REQ_RCVD)) { 2425 2426 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep); 2427 err = -ECONNRESET; 2428 goto err_out; 2429 } 2430 2431 BUG_ON(!qp); 2432 2433 set_bit(ULP_ACCEPT, &ep->com.history); 2434 2435 if ((conn_param->ord > c4iw_max_read_depth) || 2436 (conn_param->ird > c4iw_max_read_depth)) { 2437 2438 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep); 2439 err = -EINVAL; 2440 goto err_abort; 2441 } 2442 2443 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 2444 2445 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep); 2446 2447 if (conn_param->ord > ep->ird) { 2448 if (RELAXED_IRD_NEGOTIATION) { 2449 conn_param->ord = ep->ird; 2450 } else { 2451 ep->ird = conn_param->ird; 2452 ep->ord = conn_param->ord; 2453 send_mpa_reject(ep, conn_param->private_data, 2454 conn_param->private_data_len); 2455 err = -ENOMEM; 2456 goto err_abort; 2457 } 2458 } 2459 if (conn_param->ird < ep->ord) { 2460 if (RELAXED_IRD_NEGOTIATION && 2461 ep->ord <= h->rdev.adap->params.max_ordird_qp) { 2462 conn_param->ird = ep->ord; 2463 } else { 2464 err = -ENOMEM; 2465 goto err_abort; 2466 } 2467 } 2468 } 2469 ep->ird = conn_param->ird; 2470 ep->ord = conn_param->ord; 2471 2472 if (ep->mpa_attr.version == 1) { 2473 if (peer2peer && ep->ird == 0) 2474 ep->ird = 1; 2475 } else { 2476 if (peer2peer && 2477 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) && 2478 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0) 2479 ep->ird = 1; 2480 } 2481 2482 CTR4(KTR_IW_CXGBE, "%s %d ird %d ord %d", __func__, __LINE__, 2483 ep->ird, ep->ord); 2484 2485 ep->com.cm_id = cm_id; 2486 ref_cm_id(&ep->com); 2487 ep->com.qp = qp; 2488 ref_qp(ep); 2489 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2490 2491 /* bind QP to EP and move to RTS */ 2492 attrs.mpa_attr = ep->mpa_attr; 2493 attrs.max_ird = ep->ird; 2494 attrs.max_ord = ep->ord; 2495 attrs.llp_stream_handle = ep; 2496 attrs.next_state = C4IW_QP_STATE_RTS; 2497 2498 /* bind QP and TID with INIT_WR */ 2499 mask = C4IW_QP_ATTR_NEXT_STATE | 2500 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 2501 C4IW_QP_ATTR_MPA_ATTR | 2502 C4IW_QP_ATTR_MAX_IRD | 2503 C4IW_QP_ATTR_MAX_ORD; 2504 2505 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2506 if (err) { 2507 CTR3(KTR_IW_CXGBE, "%s:caca %p, err: %d", __func__, ep, err); 2508 goto err_defef_cm_id; 2509 } 2510 2511 err = send_mpa_reply(ep, conn_param->private_data, 2512 conn_param->private_data_len); 2513 if (err) { 2514 CTR3(KTR_IW_CXGBE, "%s:cacb %p, err: %d", __func__, ep, err); 2515 goto err_defef_cm_id; 2516 } 2517 2518 ep->com.state = FPDU_MODE; 2519 established_upcall(ep); 2520 mutex_unlock(&ep->com.mutex); 2521 c4iw_put_ep(&ep->com); 2522 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep); 2523 return 0; 2524 err_defef_cm_id: 2525 deref_cm_id(&ep->com); 2526 err_abort: 2527 abort = 1; 2528 err_out: 2529 if (abort) 2530 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 2531 mutex_unlock(&ep->com.mutex); 2532 c4iw_put_ep(&ep->com); 2533 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep); 2534 return err; 2535 } 2536 2537 static int 2538 c4iw_sock_create(struct sockaddr_storage *laddr, struct socket **so) 2539 { 2540 int ret; 2541 int size, on; 2542 struct socket *sock = NULL; 2543 struct sockopt sopt; 2544 2545 ret = sock_create_kern(laddr->ss_family, 2546 SOCK_STREAM, IPPROTO_TCP, &sock); 2547 if (ret) { 2548 CTR2(KTR_IW_CXGBE, "%s:Failed to create TCP socket. err %d", 2549 __func__, ret); 2550 return ret; 2551 } 2552 2553 if (reuseaddr) { 2554 bzero(&sopt, sizeof(struct sockopt)); 2555 sopt.sopt_dir = SOPT_SET; 2556 sopt.sopt_level = SOL_SOCKET; 2557 sopt.sopt_name = SO_REUSEADDR; 2558 on = 1; 2559 sopt.sopt_val = &on; 2560 sopt.sopt_valsize = sizeof(on); 2561 ret = -sosetopt(sock, &sopt); 2562 if (ret != 0) { 2563 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEADDR) " 2564 "failed with %d.\n", __func__, sock, ret); 2565 } 2566 bzero(&sopt, sizeof(struct sockopt)); 2567 sopt.sopt_dir = SOPT_SET; 2568 sopt.sopt_level = SOL_SOCKET; 2569 sopt.sopt_name = SO_REUSEPORT; 2570 on = 1; 2571 sopt.sopt_val = &on; 2572 sopt.sopt_valsize = sizeof(on); 2573 ret = -sosetopt(sock, &sopt); 2574 if (ret != 0) { 2575 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEPORT) " 2576 "failed with %d.\n", __func__, sock, ret); 2577 } 2578 } 2579 2580 ret = -sobind(sock, (struct sockaddr *)laddr, curthread); 2581 if (ret) { 2582 CTR2(KTR_IW_CXGBE, "%s:Failed to bind socket. err %p", 2583 __func__, ret); 2584 sock_release(sock); 2585 return ret; 2586 } 2587 2588 size = laddr->ss_family == AF_INET6 ? 2589 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 2590 ret = sock_getname(sock, (struct sockaddr *)laddr, &size, 0); 2591 if (ret) { 2592 CTR2(KTR_IW_CXGBE, "%s:sock_getname failed. err %p", 2593 __func__, ret); 2594 sock_release(sock); 2595 return ret; 2596 } 2597 2598 *so = sock; 2599 return 0; 2600 } 2601 2602 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2603 { 2604 int err = 0; 2605 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2606 struct c4iw_ep *ep = NULL; 2607 if_t nh_ifp; /* Logical egress interface */ 2608 struct epoch_tracker et; 2609 #ifdef VIMAGE 2610 struct rdma_cm_id *rdma_id = (struct rdma_cm_id*)cm_id->context; 2611 struct vnet *vnet = rdma_id->route.addr.dev_addr.net; 2612 #endif 2613 2614 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id); 2615 2616 2617 if ((conn_param->ord > c4iw_max_read_depth) || 2618 (conn_param->ird > c4iw_max_read_depth)) { 2619 2620 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id); 2621 err = -EINVAL; 2622 goto out; 2623 } 2624 ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2625 cm_id->provider_data = ep; 2626 2627 init_timer(&ep->timer); 2628 ep->plen = conn_param->private_data_len; 2629 2630 if (ep->plen) { 2631 2632 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep); 2633 memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 2634 conn_param->private_data, ep->plen); 2635 } 2636 ep->ird = conn_param->ird; 2637 ep->ord = conn_param->ord; 2638 2639 if (peer2peer && ep->ord == 0) { 2640 2641 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep); 2642 ep->ord = 1; 2643 } 2644 2645 ep->com.dev = dev; 2646 ep->com.cm_id = cm_id; 2647 ref_cm_id(&ep->com); 2648 ep->com.qp = get_qhp(dev, conn_param->qpn); 2649 2650 if (!ep->com.qp) { 2651 2652 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep); 2653 err = -EINVAL; 2654 goto fail; 2655 } 2656 ref_qp(ep); 2657 ep->com.thread = curthread; 2658 2659 NET_EPOCH_ENTER(et); 2660 CURVNET_SET(vnet); 2661 err = get_ifnet_from_raddr(&cm_id->remote_addr, &nh_ifp); 2662 CURVNET_RESTORE(); 2663 NET_EPOCH_EXIT(et); 2664 2665 if (err) { 2666 2667 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep); 2668 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 2669 err = EHOSTUNREACH; 2670 return err; 2671 } 2672 2673 if (!(if_getcapenable(nh_ifp) & IFCAP_TOE) || 2674 TOEDEV(nh_ifp) == NULL) { 2675 err = -ENOPROTOOPT; 2676 goto fail; 2677 } 2678 ep->com.state = CONNECTING; 2679 ep->tos = 0; 2680 ep->com.local_addr = cm_id->local_addr; 2681 ep->com.remote_addr = cm_id->remote_addr; 2682 2683 err = c4iw_sock_create(&cm_id->local_addr, &ep->com.so); 2684 if (err) 2685 goto fail; 2686 2687 setiwsockopt(ep->com.so); 2688 init_iwarp_socket(ep->com.so, &ep->com); 2689 err = -soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr, 2690 ep->com.thread); 2691 if (err) 2692 goto fail_free_so; 2693 CTR2(KTR_IW_CXGBE, "%s:ccE, ep %p", __func__, ep); 2694 return 0; 2695 2696 fail_free_so: 2697 uninit_iwarp_socket(ep->com.so); 2698 ep->com.state = DEAD; 2699 sock_release(ep->com.so); 2700 fail: 2701 deref_cm_id(&ep->com); 2702 c4iw_put_ep(&ep->com); 2703 ep = NULL; 2704 out: 2705 CTR2(KTR_IW_CXGBE, "%s:ccE Error %d", __func__, err); 2706 return err; 2707 } 2708 2709 /* 2710 * iwcm->create_listen. Returns -errno on failure. 2711 */ 2712 int 2713 c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 2714 { 2715 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2716 struct c4iw_listen_ep *lep = NULL; 2717 struct listen_port_info *port_info = NULL; 2718 int rc = 0; 2719 2720 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, backlog %s", __func__, cm_id, 2721 backlog); 2722 if (c4iw_fatal_error(&dev->rdev)) { 2723 CTR2(KTR_IW_CXGBE, "%s: cm_id %p, fatal error", __func__, 2724 cm_id); 2725 return -EIO; 2726 } 2727 lep = alloc_ep(sizeof(*lep), GFP_KERNEL); 2728 lep->com.cm_id = cm_id; 2729 ref_cm_id(&lep->com); 2730 lep->com.dev = dev; 2731 lep->backlog = backlog; 2732 lep->com.local_addr = cm_id->local_addr; 2733 lep->com.thread = curthread; 2734 cm_id->provider_data = lep; 2735 lep->com.state = LISTEN; 2736 2737 /* In case of INDADDR_ANY, ibcore creates cmid for each device and 2738 * invokes iw_cxgbe listener callbacks assuming that iw_cxgbe creates 2739 * HW listeners for each device seperately. But toecore expects single 2740 * solisten() call with INADDR_ANY address to create HW listeners on 2741 * all devices for a given port number. So iw_cxgbe driver calls 2742 * solisten() only once for INADDR_ANY(usually done at first time 2743 * listener callback from ibcore). And all the subsequent INADDR_ANY 2744 * listener callbacks from ibcore(for the same port address) do not 2745 * invoke solisten() as first listener callback has already created 2746 * listeners for all other devices(via solisten). 2747 */ 2748 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr, NULL)) { 2749 port_info = add_ep_to_listenlist(lep); 2750 /* skip solisten() if refcnt > 1, as the listeners were 2751 * already created by 'Master lep' 2752 */ 2753 if (port_info->refcnt > 1) { 2754 /* As there will be only one listener socket for a TCP 2755 * port, copy Master lep's socket pointer to other lep's 2756 * that are belonging to same TCP port. 2757 */ 2758 struct c4iw_listen_ep *head_lep = 2759 container_of(port_info->lep_list.next, 2760 struct c4iw_listen_ep, listen_ep_list); 2761 lep->com.so = head_lep->com.so; 2762 goto out; 2763 } 2764 } 2765 rc = c4iw_sock_create(&cm_id->local_addr, &lep->com.so); 2766 if (rc) { 2767 CTR2(KTR_IW_CXGBE, "%s:Failed to create socket. err %d", 2768 __func__, rc); 2769 goto fail; 2770 } 2771 2772 rc = -solisten(lep->com.so, backlog, curthread); 2773 if (rc) { 2774 CTR3(KTR_IW_CXGBE, "%s:Failed to listen on sock:%p. err %d", 2775 __func__, lep->com.so, rc); 2776 goto fail_free_so; 2777 } 2778 init_iwarp_socket(lep->com.so, &lep->com); 2779 out: 2780 return 0; 2781 2782 fail_free_so: 2783 sock_release(lep->com.so); 2784 fail: 2785 if (port_info) 2786 rem_ep_from_listenlist(lep); 2787 deref_cm_id(&lep->com); 2788 c4iw_put_ep(&lep->com); 2789 return rc; 2790 } 2791 2792 int 2793 c4iw_destroy_listen(struct iw_cm_id *cm_id) 2794 { 2795 struct c4iw_listen_ep *lep = to_listen_ep(cm_id); 2796 2797 mutex_lock(&lep->com.mutex); 2798 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, state %s", __func__, cm_id, 2799 states[lep->com.state]); 2800 2801 lep->com.state = DEAD; 2802 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr, 2803 lep->com.so->so_vnet)) { 2804 /* if no refcount then close listen socket */ 2805 if (!rem_ep_from_listenlist(lep)) 2806 close_socket(lep->com.so); 2807 } else 2808 close_socket(lep->com.so); 2809 deref_cm_id(&lep->com); 2810 mutex_unlock(&lep->com.mutex); 2811 c4iw_put_ep(&lep->com); 2812 return 0; 2813 } 2814 2815 int __c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2816 { 2817 int ret; 2818 mutex_lock(&ep->com.mutex); 2819 ret = c4iw_ep_disconnect(ep, abrupt, gfp); 2820 mutex_unlock(&ep->com.mutex); 2821 return ret; 2822 } 2823 2824 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2825 { 2826 int ret = 0; 2827 int close = 0; 2828 struct c4iw_rdev *rdev; 2829 2830 2831 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep); 2832 2833 rdev = &ep->com.dev->rdev; 2834 2835 if (c4iw_fatal_error(rdev)) { 2836 CTR3(KTR_IW_CXGBE, "%s:ced1 fatal error %p %s", __func__, ep, 2837 states[ep->com.state]); 2838 if (ep->com.state != DEAD) { 2839 send_abort(ep); 2840 ep->com.state = DEAD; 2841 } 2842 close_complete_upcall(ep, -ECONNRESET); 2843 return ECONNRESET; 2844 } 2845 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep, 2846 states[ep->com.state]); 2847 2848 /* 2849 * Ref the ep here in case we have fatal errors causing the 2850 * ep to be released and freed. 2851 */ 2852 c4iw_get_ep(&ep->com); 2853 switch (ep->com.state) { 2854 2855 case MPA_REQ_WAIT: 2856 case MPA_REQ_SENT: 2857 case MPA_REQ_RCVD: 2858 case MPA_REP_SENT: 2859 case FPDU_MODE: 2860 close = 1; 2861 if (abrupt) 2862 ep->com.state = ABORTING; 2863 else { 2864 ep->com.state = CLOSING; 2865 START_EP_TIMER(ep); 2866 } 2867 set_bit(CLOSE_SENT, &ep->com.flags); 2868 break; 2869 2870 case CLOSING: 2871 2872 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2873 2874 close = 1; 2875 if (abrupt) { 2876 STOP_EP_TIMER(ep); 2877 ep->com.state = ABORTING; 2878 } else 2879 ep->com.state = MORIBUND; 2880 } 2881 break; 2882 2883 case MORIBUND: 2884 case ABORTING: 2885 case DEAD: 2886 CTR3(KTR_IW_CXGBE, 2887 "%s ignoring disconnect ep %p state %u", __func__, 2888 ep, ep->com.state); 2889 break; 2890 2891 default: 2892 BUG(); 2893 break; 2894 } 2895 2896 2897 if (close) { 2898 2899 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep); 2900 2901 if (abrupt) { 2902 2903 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep); 2904 set_bit(EP_DISC_ABORT, &ep->com.history); 2905 close_complete_upcall(ep, -ECONNRESET); 2906 send_abort(ep); 2907 } else { 2908 2909 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep); 2910 set_bit(EP_DISC_CLOSE, &ep->com.history); 2911 2912 if (!ep->parent_ep) 2913 ep->com.state = MORIBUND; 2914 2915 CURVNET_SET(ep->com.so->so_vnet); 2916 ret = sodisconnect(ep->com.so); 2917 CURVNET_RESTORE(); 2918 if (ret) { 2919 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep); 2920 STOP_EP_TIMER(ep); 2921 send_abort(ep); 2922 ep->com.state = DEAD; 2923 close_complete_upcall(ep, -ECONNRESET); 2924 set_bit(EP_DISC_FAIL, &ep->com.history); 2925 if (ep->com.qp) { 2926 struct c4iw_qp_attributes attrs = {0}; 2927 2928 attrs.next_state = C4IW_QP_STATE_ERROR; 2929 ret = c4iw_modify_qp( 2930 ep->com.dev, ep->com.qp, 2931 C4IW_QP_ATTR_NEXT_STATE, 2932 &attrs, 1); 2933 CTR3(KTR_IW_CXGBE, "%s:ced7 %p ret %d", 2934 __func__, ep, ret); 2935 } 2936 } 2937 } 2938 } 2939 c4iw_put_ep(&ep->com); 2940 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep); 2941 return ret; 2942 } 2943 2944 #ifdef C4IW_EP_REDIRECT 2945 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, 2946 struct l2t_entry *l2t) 2947 { 2948 struct c4iw_ep *ep = ctx; 2949 2950 if (ep->dst != old) 2951 return 0; 2952 2953 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, 2954 l2t); 2955 dst_hold(new); 2956 cxgb4_l2t_release(ep->l2t); 2957 ep->l2t = l2t; 2958 dst_release(old); 2959 ep->dst = new; 2960 return 1; 2961 } 2962 #endif 2963 2964 2965 2966 static void ep_timeout(unsigned long arg) 2967 { 2968 struct c4iw_ep *ep = (struct c4iw_ep *)arg; 2969 2970 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 2971 2972 /* 2973 * Only insert if it is not already on the list. 2974 */ 2975 if (!(ep->com.ep_events & C4IW_EVENT_TIMEOUT)) { 2976 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep); 2977 add_ep_to_req_list(ep, C4IW_EVENT_TIMEOUT); 2978 } 2979 } 2980 } 2981 2982 static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl) 2983 { 2984 uint64_t val = be64toh(*rpl); 2985 int ret; 2986 struct c4iw_wr_wait *wr_waitp; 2987 2988 ret = (int)((val >> 8) & 0xff); 2989 wr_waitp = (struct c4iw_wr_wait *)rpl[1]; 2990 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret); 2991 if (wr_waitp) 2992 c4iw_wake_up(wr_waitp, ret ? -ret : 0); 2993 2994 return (0); 2995 } 2996 2997 static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl) 2998 { 2999 struct cqe_list_entry *cle; 3000 unsigned long flag; 3001 3002 cle = malloc(sizeof(*cle), M_CXGBE, M_NOWAIT); 3003 cle->rhp = sc->iwarp_softc; 3004 cle->err_cqe = *(const struct t4_cqe *)(&rpl[0]); 3005 3006 spin_lock_irqsave(&err_cqe_lock, flag); 3007 list_add_tail(&cle->entry, &err_cqe_list); 3008 queue_work(c4iw_taskq, &c4iw_task); 3009 spin_unlock_irqrestore(&err_cqe_lock, flag); 3010 3011 return (0); 3012 } 3013 3014 static int 3015 process_terminate(struct c4iw_ep *ep) 3016 { 3017 struct c4iw_qp_attributes attrs = {0}; 3018 3019 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep); 3020 3021 if (ep && ep->com.qp) { 3022 3023 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", 3024 ep->hwtid, ep->com.qp->wq.sq.qid); 3025 attrs.next_state = C4IW_QP_STATE_TERMINATE; 3026 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 3027 1); 3028 } else 3029 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", 3030 ep->hwtid); 3031 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep); 3032 3033 return 0; 3034 } 3035 3036 int __init c4iw_cm_init(void) 3037 { 3038 3039 t4_register_cpl_handler(CPL_RDMA_TERMINATE, terminate); 3040 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, fw6_wr_rpl); 3041 t4_register_fw_msg_handler(FW6_TYPE_CQE, fw6_cqe_handler); 3042 t4_register_an_handler(c4iw_ev_handler); 3043 3044 TAILQ_INIT(&req_list); 3045 spin_lock_init(&req_lock); 3046 INIT_LIST_HEAD(&err_cqe_list); 3047 spin_lock_init(&err_cqe_lock); 3048 3049 INIT_WORK(&c4iw_task, process_req); 3050 3051 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe"); 3052 if (!c4iw_taskq) 3053 return -ENOMEM; 3054 3055 return 0; 3056 } 3057 3058 void __exit c4iw_cm_term(void) 3059 { 3060 WARN_ON(!TAILQ_EMPTY(&req_list)); 3061 WARN_ON(!list_empty(&err_cqe_list)); 3062 flush_workqueue(c4iw_taskq); 3063 destroy_workqueue(c4iw_taskq); 3064 3065 t4_register_cpl_handler(CPL_RDMA_TERMINATE, NULL); 3066 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, NULL); 3067 t4_register_fw_msg_handler(FW6_TYPE_CQE, NULL); 3068 t4_register_an_handler(NULL); 3069 } 3070 #endif 3071