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(struct timer_list *t); 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 inpcb *__inp = sotoinpcb(so); \ 149 KASSERT(__inp != NULL, \ 150 ("GET_LOCAL_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 151 if (__inp->inp_vflag & INP_IPV4) \ 152 in_getsockaddr(so, (struct sockaddr *)pladdr); \ 153 else \ 154 in6_getsockaddr(so, (struct sockaddr *)pladdr); \ 155 } while (0) 156 157 #define GET_REMOTE_ADDR(praddr, so) \ 158 do { \ 159 struct inpcb *__inp = sotoinpcb(so); \ 160 KASSERT(__inp != NULL, \ 161 ("GET_REMOTE_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 162 if (__inp->inp_vflag & INP_IPV4) \ 163 in_getpeeraddr(so, (struct sockaddr *)praddr); \ 164 else \ 165 in6_getpeeraddr(so, (struct sockaddr *)praddr); \ 166 } while (0) 167 168 static char *states[] = { 169 "idle", 170 "listen", 171 "connecting", 172 "mpa_wait_req", 173 "mpa_req_sent", 174 "mpa_req_rcvd", 175 "mpa_rep_sent", 176 "fpdu_mode", 177 "aborting", 178 "closing", 179 "moribund", 180 "dead", 181 NULL, 182 }; 183 184 static void deref_cm_id(struct c4iw_ep_common *epc) 185 { 186 epc->cm_id->rem_ref(epc->cm_id); 187 epc->cm_id = NULL; 188 set_bit(CM_ID_DEREFED, &epc->history); 189 } 190 191 static void ref_cm_id(struct c4iw_ep_common *epc) 192 { 193 set_bit(CM_ID_REFED, &epc->history); 194 epc->cm_id->add_ref(epc->cm_id); 195 } 196 197 static void deref_qp(struct c4iw_ep *ep) 198 { 199 c4iw_qp_rem_ref(&ep->com.qp->ibqp); 200 clear_bit(QP_REFERENCED, &ep->com.flags); 201 set_bit(QP_DEREFED, &ep->com.history); 202 } 203 204 static void ref_qp(struct c4iw_ep *ep) 205 { 206 set_bit(QP_REFERENCED, &ep->com.flags); 207 set_bit(QP_REFED, &ep->com.history); 208 c4iw_qp_add_ref(&ep->com.qp->ibqp); 209 } 210 /* allocated per TCP port while listening */ 211 struct listen_port_info { 212 uint16_t port_num; /* TCP port address */ 213 struct list_head list; /* belongs to listen_port_list */ 214 struct list_head lep_list; /* per port lep list */ 215 uint32_t refcnt; /* number of lep's listening */ 216 }; 217 218 /* 219 * Following two lists are used to manage INADDR_ANY listeners: 220 * 1)listen_port_list 221 * 2)lep_list 222 * 223 * Below is the INADDR_ANY listener lists overview on a system with a two port 224 * adapter: 225 * |------------------| 226 * |listen_port_list | 227 * |------------------| 228 * | 229 * | |-----------| |-----------| 230 * | | port_num:X| | port_num:X| 231 * |--------------|-list------|-------|-list------|-------.... 232 * | lep_list----| | lep_list----| 233 * | refcnt | | | refcnt | | 234 * | | | | | | 235 * | | | | | | 236 * |-----------| | |-----------| | 237 * | | 238 * | | 239 * | | 240 * | | lep1 lep2 241 * | | |----------------| |----------------| 242 * | |----| listen_ep_list |----| listen_ep_list | 243 * | |----------------| |----------------| 244 * | 245 * | 246 * | lep1 lep2 247 * | |----------------| |----------------| 248 * |---| listen_ep_list |----| listen_ep_list | 249 * |----------------| |----------------| 250 * 251 * Because of two port adapter, the number of lep's are two(lep1 & lep2) for 252 * each TCP port number. 253 * 254 * Here 'lep1' is always marked as Master lep, because solisten() is always 255 * called through first lep. 256 * 257 */ 258 static struct listen_port_info * 259 add_ep_to_listenlist(struct c4iw_listen_ep *lep) 260 { 261 uint16_t port; 262 struct listen_port_info *port_info = NULL; 263 struct sockaddr_storage *laddr = &lep->com.local_addr; 264 265 port = (laddr->ss_family == AF_INET) ? 266 ((struct sockaddr_in *)laddr)->sin_port : 267 ((struct sockaddr_in6 *)laddr)->sin6_port; 268 269 mutex_lock(&listen_port_mutex); 270 271 list_for_each_entry(port_info, &listen_port_list, list) 272 if (port_info->port_num == port) 273 goto found_port; 274 275 port_info = malloc(sizeof(*port_info), M_CXGBE, M_WAITOK); 276 port_info->port_num = port; 277 port_info->refcnt = 0; 278 279 list_add_tail(&port_info->list, &listen_port_list); 280 INIT_LIST_HEAD(&port_info->lep_list); 281 282 found_port: 283 port_info->refcnt++; 284 list_add_tail(&lep->listen_ep_list, &port_info->lep_list); 285 mutex_unlock(&listen_port_mutex); 286 return port_info; 287 } 288 289 static int 290 rem_ep_from_listenlist(struct c4iw_listen_ep *lep) 291 { 292 uint16_t port; 293 struct listen_port_info *port_info = NULL; 294 struct sockaddr_storage *laddr = &lep->com.local_addr; 295 int refcnt = 0; 296 297 port = (laddr->ss_family == AF_INET) ? 298 ((struct sockaddr_in *)laddr)->sin_port : 299 ((struct sockaddr_in6 *)laddr)->sin6_port; 300 301 mutex_lock(&listen_port_mutex); 302 303 /* get the port_info structure based on the lep's port address */ 304 list_for_each_entry(port_info, &listen_port_list, list) { 305 if (port_info->port_num == port) { 306 port_info->refcnt--; 307 refcnt = port_info->refcnt; 308 /* remove the current lep from the listen list */ 309 list_del(&lep->listen_ep_list); 310 if (port_info->refcnt == 0) { 311 /* Remove this entry from the list as there 312 * are no more listeners for this port_num. 313 */ 314 list_del(&port_info->list); 315 kfree(port_info); 316 } 317 break; 318 } 319 } 320 mutex_unlock(&listen_port_mutex); 321 return refcnt; 322 } 323 324 /* 325 * Find the lep that belongs to the ifnet on which the SYN frame was received. 326 */ 327 struct c4iw_listen_ep * 328 find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so) 329 { 330 struct adapter *adap = NULL; 331 struct c4iw_listen_ep *lep = NULL; 332 if_t ifp = NULL, hw_ifp = NULL; 333 struct listen_port_info *port_info = NULL; 334 int i = 0, found_portinfo = 0, found_lep = 0; 335 uint16_t port; 336 337 /* 338 * STEP 1: Figure out 'ifp' of the physical interface, not pseudo 339 * interfaces like vlan, lagg, etc.. 340 * TBD: lagg support, lagg + vlan support. 341 */ 342 ifp = TOEPCB(so)->l2te->ifp; 343 if (if_gettype(ifp) == IFT_L2VLAN) { 344 hw_ifp = VLAN_TRUNKDEV(ifp); 345 if (hw_ifp == NULL) { 346 CTR4(KTR_IW_CXGBE, "%s: Failed to get parent ifnet of " 347 "vlan ifnet %p, sock %p, master_lep %p", 348 __func__, ifp, so, master_lep); 349 return (NULL); 350 } 351 } else 352 hw_ifp = ifp; 353 354 /* STEP 2: Find 'port_info' with listener local port address. */ 355 port = (master_lep->com.local_addr.ss_family == AF_INET) ? 356 ((struct sockaddr_in *)&master_lep->com.local_addr)->sin_port : 357 ((struct sockaddr_in6 *)&master_lep->com.local_addr)->sin6_port; 358 359 360 mutex_lock(&listen_port_mutex); 361 list_for_each_entry(port_info, &listen_port_list, list) 362 if (port_info->port_num == port) { 363 found_portinfo =1; 364 break; 365 } 366 if (!found_portinfo) 367 goto out; 368 369 /* STEP 3: Traverse through list of lep's that are bound to the current 370 * TCP port address and find the lep that belongs to the ifnet on which 371 * the SYN frame was received. 372 */ 373 list_for_each_entry(lep, &port_info->lep_list, listen_ep_list) { 374 adap = lep->com.dev->rdev.adap; 375 for_each_port(adap, i) { 376 if (hw_ifp == adap->port[i]->vi[0].ifp) { 377 found_lep =1; 378 goto out; 379 } 380 } 381 } 382 out: 383 mutex_unlock(&listen_port_mutex); 384 return found_lep ? lep : (NULL); 385 } 386 387 static void process_timeout(struct c4iw_ep *ep) 388 { 389 struct c4iw_qp_attributes attrs = {0}; 390 int abort = 1; 391 392 CTR4(KTR_IW_CXGBE, "%s ep :%p, tid:%u, state %d", __func__, 393 ep, ep->hwtid, ep->com.state); 394 set_bit(TIMEDOUT, &ep->com.history); 395 switch (ep->com.state) { 396 case MPA_REQ_SENT: 397 connect_reply_upcall(ep, -ETIMEDOUT); 398 break; 399 case MPA_REQ_WAIT: 400 case MPA_REQ_RCVD: 401 case MPA_REP_SENT: 402 case FPDU_MODE: 403 break; 404 case CLOSING: 405 case MORIBUND: 406 if (ep->com.cm_id && ep->com.qp) { 407 attrs.next_state = C4IW_QP_STATE_ERROR; 408 c4iw_modify_qp(ep->com.dev, ep->com.qp, 409 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 410 } 411 close_complete_upcall(ep, -ETIMEDOUT); 412 break; 413 case ABORTING: 414 case DEAD: 415 /* 416 * These states are expected if the ep timed out at the same 417 * time as another thread was calling stop_ep_timer(). 418 * So we silently do nothing for these states. 419 */ 420 abort = 0; 421 break; 422 default: 423 CTR4(KTR_IW_CXGBE, "%s unexpected state ep %p tid %u state %u" 424 , __func__, ep, ep->hwtid, ep->com.state); 425 abort = 0; 426 } 427 if (abort) 428 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 429 c4iw_put_ep(&ep->com); 430 return; 431 } 432 433 struct cqe_list_entry { 434 struct list_head entry; 435 struct c4iw_dev *rhp; 436 struct t4_cqe err_cqe; 437 }; 438 439 static void 440 process_err_cqes(void) 441 { 442 unsigned long flag; 443 struct cqe_list_entry *cle; 444 445 spin_lock_irqsave(&err_cqe_lock, flag); 446 while (!list_empty(&err_cqe_list)) { 447 struct list_head *tmp; 448 tmp = err_cqe_list.next; 449 list_del(tmp); 450 tmp->next = tmp->prev = NULL; 451 spin_unlock_irqrestore(&err_cqe_lock, flag); 452 cle = list_entry(tmp, struct cqe_list_entry, entry); 453 c4iw_ev_dispatch(cle->rhp, &cle->err_cqe); 454 free(cle, M_CXGBE); 455 spin_lock_irqsave(&err_cqe_lock, flag); 456 } 457 spin_unlock_irqrestore(&err_cqe_lock, flag); 458 459 return; 460 } 461 462 static void 463 process_req(struct work_struct *ctx) 464 { 465 struct c4iw_ep_common *epc; 466 unsigned long flag; 467 int ep_events; 468 469 process_err_cqes(); 470 spin_lock_irqsave(&req_lock, flag); 471 while (!TAILQ_EMPTY(&req_list)) { 472 epc = TAILQ_FIRST(&req_list); 473 TAILQ_REMOVE(&req_list, epc, entry); 474 epc->entry.tqe_prev = NULL; 475 ep_events = epc->ep_events; 476 epc->ep_events = 0; 477 spin_unlock_irqrestore(&req_lock, flag); 478 mutex_lock(&epc->mutex); 479 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, ep_state %s events 0x%x", 480 __func__, epc->so, epc, states[epc->state], ep_events); 481 if (ep_events & C4IW_EVENT_TERM) 482 process_terminate((struct c4iw_ep *)epc); 483 if (ep_events & C4IW_EVENT_TIMEOUT) 484 process_timeout((struct c4iw_ep *)epc); 485 if (ep_events & C4IW_EVENT_SOCKET) 486 process_socket_event((struct c4iw_ep *)epc); 487 mutex_unlock(&epc->mutex); 488 c4iw_put_ep(epc); 489 process_err_cqes(); 490 spin_lock_irqsave(&req_lock, flag); 491 } 492 spin_unlock_irqrestore(&req_lock, flag); 493 } 494 495 /* 496 * XXX: doesn't belong here in the iWARP driver. 497 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is 498 * set. Is this a valid assumption for active open? 499 */ 500 static int 501 set_tcpinfo(struct c4iw_ep *ep) 502 { 503 struct socket *so = ep->com.so; 504 struct inpcb *inp = sotoinpcb(so); 505 struct tcpcb *tp; 506 struct toepcb *toep; 507 int rc = 0; 508 509 INP_WLOCK(inp); 510 tp = intotcpcb(inp); 511 if ((tp->t_flags & TF_TOE) == 0) { 512 rc = EINVAL; 513 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n", 514 __func__, so, ep); 515 goto done; 516 } 517 toep = TOEPCB(so); 518 519 ep->hwtid = toep->tid; 520 ep->snd_seq = tp->snd_nxt; 521 ep->rcv_seq = tp->rcv_nxt; 522 done: 523 INP_WUNLOCK(inp); 524 return (rc); 525 526 } 527 static int 528 get_ifnet_from_raddr(struct sockaddr_storage *raddr, if_t *ifp) 529 { 530 int err = 0; 531 struct nhop_object *nh; 532 533 if (raddr->ss_family == AF_INET) { 534 struct sockaddr_in *raddr4 = (struct sockaddr_in *)raddr; 535 536 nh = fib4_lookup(RT_DEFAULT_FIB, raddr4->sin_addr, 0, 537 NHR_NONE, 0); 538 } else { 539 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)raddr; 540 struct in6_addr addr6; 541 uint32_t scopeid; 542 543 memset(&addr6, 0, sizeof(addr6)); 544 in6_splitscope((struct in6_addr *)&raddr6->sin6_addr, 545 &addr6, &scopeid); 546 nh = fib6_lookup(RT_DEFAULT_FIB, &addr6, scopeid, 547 NHR_NONE, 0); 548 } 549 550 if (nh == NULL) 551 err = EHOSTUNREACH; 552 else 553 *ifp = nh->nh_ifp; 554 CTR2(KTR_IW_CXGBE, "%s: return: %d", __func__, err); 555 return err; 556 } 557 558 static void 559 close_socket(struct socket *so) 560 { 561 uninit_iwarp_socket(so); 562 soclose(so); 563 } 564 565 static void 566 process_peer_close(struct c4iw_ep *ep) 567 { 568 struct c4iw_qp_attributes attrs = {0}; 569 int disconnect = 1; 570 int release = 0; 571 572 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep, 573 ep->com.so, states[ep->com.state]); 574 575 switch (ep->com.state) { 576 577 case MPA_REQ_WAIT: 578 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT DEAD", 579 __func__, ep); 580 /* Fallthrough */ 581 case MPA_REQ_SENT: 582 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT DEAD", 583 __func__, ep); 584 ep->com.state = DEAD; 585 connect_reply_upcall(ep, -ECONNABORTED); 586 587 disconnect = 0; 588 STOP_EP_TIMER(ep); 589 close_socket(ep->com.so); 590 deref_cm_id(&ep->com); 591 release = 1; 592 break; 593 594 case MPA_REQ_RCVD: 595 596 /* 597 * We're gonna mark this puppy DEAD, but keep 598 * the reference on it until the ULP accepts or 599 * rejects the CR. 600 */ 601 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING", 602 __func__, ep); 603 ep->com.state = CLOSING; 604 break; 605 606 case MPA_REP_SENT: 607 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING", 608 __func__, ep); 609 ep->com.state = CLOSING; 610 break; 611 612 case FPDU_MODE: 613 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING", 614 __func__, ep); 615 START_EP_TIMER(ep); 616 ep->com.state = CLOSING; 617 attrs.next_state = C4IW_QP_STATE_CLOSING; 618 c4iw_modify_qp(ep->com.dev, ep->com.qp, 619 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 620 peer_close_upcall(ep); 621 break; 622 623 case ABORTING: 624 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)", 625 __func__, ep); 626 disconnect = 0; 627 break; 628 629 case CLOSING: 630 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND", 631 __func__, ep); 632 ep->com.state = MORIBUND; 633 disconnect = 0; 634 break; 635 636 case MORIBUND: 637 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__, 638 ep); 639 STOP_EP_TIMER(ep); 640 if (ep->com.cm_id && ep->com.qp) { 641 attrs.next_state = C4IW_QP_STATE_IDLE; 642 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 643 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 644 } 645 close_socket(ep->com.so); 646 close_complete_upcall(ep, 0); 647 ep->com.state = DEAD; 648 release = 1; 649 disconnect = 0; 650 break; 651 652 case DEAD: 653 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)", 654 __func__, ep); 655 disconnect = 0; 656 break; 657 658 default: 659 panic("%s: ep %p state %d", __func__, ep, 660 ep->com.state); 661 break; 662 } 663 664 665 if (disconnect) { 666 667 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep); 668 c4iw_ep_disconnect(ep, 0, M_NOWAIT); 669 } 670 if (release) { 671 672 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep); 673 c4iw_put_ep(&ep->com); 674 } 675 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep); 676 return; 677 } 678 679 static void 680 process_conn_error(struct c4iw_ep *ep) 681 { 682 struct c4iw_qp_attributes attrs = {0}; 683 int ret; 684 int state; 685 686 state = ep->com.state; 687 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s", 688 __func__, ep, ep->com.so, ep->com.so->so_error, 689 states[ep->com.state]); 690 691 switch (state) { 692 693 case MPA_REQ_WAIT: 694 STOP_EP_TIMER(ep); 695 c4iw_put_ep(&ep->parent_ep->com); 696 break; 697 698 case MPA_REQ_SENT: 699 STOP_EP_TIMER(ep); 700 connect_reply_upcall(ep, -ECONNRESET); 701 break; 702 703 case MPA_REP_SENT: 704 ep->com.rpl_err = ECONNRESET; 705 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep); 706 break; 707 708 case MPA_REQ_RCVD: 709 break; 710 711 case MORIBUND: 712 case CLOSING: 713 STOP_EP_TIMER(ep); 714 /*FALLTHROUGH*/ 715 case FPDU_MODE: 716 717 if (ep->com.cm_id && ep->com.qp) { 718 719 attrs.next_state = C4IW_QP_STATE_ERROR; 720 ret = c4iw_modify_qp(ep->com.qp->rhp, 721 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 722 &attrs, 1); 723 if (ret) 724 log(LOG_ERR, 725 "%s - qp <- error failed!\n", 726 __func__); 727 } 728 peer_abort_upcall(ep); 729 break; 730 731 case ABORTING: 732 break; 733 734 case DEAD: 735 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!", 736 __func__, ep->com.so->so_error); 737 return; 738 739 default: 740 panic("%s: ep %p state %d", __func__, ep, state); 741 break; 742 } 743 744 if (state != ABORTING) { 745 close_socket(ep->com.so); 746 ep->com.state = DEAD; 747 c4iw_put_ep(&ep->com); 748 } 749 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep); 750 return; 751 } 752 753 static void 754 process_close_complete(struct c4iw_ep *ep) 755 { 756 struct c4iw_qp_attributes attrs = {0}; 757 int release = 0; 758 759 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep, 760 ep->com.so, states[ep->com.state]); 761 762 /* The cm_id may be null if we failed to connect */ 763 set_bit(CLOSE_CON_RPL, &ep->com.history); 764 765 switch (ep->com.state) { 766 767 case CLOSING: 768 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND", 769 __func__, ep); 770 ep->com.state = MORIBUND; 771 break; 772 773 case MORIBUND: 774 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__, 775 ep); 776 STOP_EP_TIMER(ep); 777 778 if ((ep->com.cm_id) && (ep->com.qp)) { 779 780 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE", 781 __func__, ep); 782 attrs.next_state = C4IW_QP_STATE_IDLE; 783 c4iw_modify_qp(ep->com.dev, 784 ep->com.qp, 785 C4IW_QP_ATTR_NEXT_STATE, 786 &attrs, 1); 787 } 788 789 close_socket(ep->com.so); 790 close_complete_upcall(ep, 0); 791 ep->com.state = DEAD; 792 release = 1; 793 break; 794 795 case ABORTING: 796 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep); 797 break; 798 799 case DEAD: 800 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep); 801 break; 802 default: 803 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p unknown ep state", 804 __func__, ep); 805 panic("%s:pcc6 %p unknown ep state", __func__, ep); 806 break; 807 } 808 809 if (release) { 810 811 CTR2(KTR_IW_CXGBE, "%s:pcc8 %p", __func__, ep); 812 release_ep_resources(ep); 813 } 814 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep); 815 return; 816 } 817 818 static void 819 setiwsockopt(struct socket *so) 820 { 821 int rc; 822 struct sockopt sopt; 823 int on = 1; 824 825 sopt.sopt_dir = SOPT_SET; 826 sopt.sopt_level = IPPROTO_TCP; 827 sopt.sopt_name = TCP_NODELAY; 828 sopt.sopt_val = (caddr_t)&on; 829 sopt.sopt_valsize = sizeof on; 830 sopt.sopt_td = NULL; 831 rc = -sosetopt(so, &sopt); 832 if (rc) { 833 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n", 834 __func__, so, rc); 835 } 836 } 837 838 static void 839 init_iwarp_socket(struct socket *so, void *arg) 840 { 841 if (SOLISTENING(so)) { 842 SOLISTEN_LOCK(so); 843 solisten_upcall_set(so, c4iw_so_upcall, arg); 844 so->so_state |= SS_NBIO; 845 SOLISTEN_UNLOCK(so); 846 } else { 847 SOCKBUF_LOCK(&so->so_rcv); 848 soupcall_set(so, SO_RCV, c4iw_so_upcall, arg); 849 so->so_state |= SS_NBIO; 850 SOCKBUF_UNLOCK(&so->so_rcv); 851 } 852 } 853 854 static void 855 uninit_iwarp_socket(struct socket *so) 856 { 857 if (SOLISTENING(so)) { 858 SOLISTEN_LOCK(so); 859 solisten_upcall_set(so, NULL, NULL); 860 SOLISTEN_UNLOCK(so); 861 } else { 862 SOCKBUF_LOCK(&so->so_rcv); 863 soupcall_clear(so, SO_RCV); 864 SOCKBUF_UNLOCK(&so->so_rcv); 865 } 866 } 867 868 static void 869 process_data(struct c4iw_ep *ep) 870 { 871 int ret = 0; 872 int disconnect = 0; 873 struct c4iw_qp_attributes attrs = {0}; 874 875 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sbused %d", __func__, 876 ep->com.so, ep, states[ep->com.state], sbused(&ep->com.so->so_rcv)); 877 878 switch (ep->com.state) { 879 case MPA_REQ_SENT: 880 disconnect = process_mpa_reply(ep); 881 break; 882 case MPA_REQ_WAIT: 883 disconnect = process_mpa_request(ep); 884 if (disconnect) 885 /* Refered in process_newconn() */ 886 c4iw_put_ep(&ep->parent_ep->com); 887 break; 888 case FPDU_MODE: 889 MPASS(ep->com.qp != NULL); 890 attrs.next_state = C4IW_QP_STATE_TERMINATE; 891 ret = c4iw_modify_qp(ep->com.dev, ep->com.qp, 892 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 893 if (ret != -EINPROGRESS) 894 disconnect = 1; 895 break; 896 default: 897 log(LOG_ERR, "%s: Unexpected streaming data. ep %p, " 898 "state %d, so %p, so_state 0x%x, sbused %u\n", 899 __func__, ep, ep->com.state, ep->com.so, 900 ep->com.so->so_state, sbused(&ep->com.so->so_rcv)); 901 break; 902 } 903 if (disconnect) 904 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); 905 906 } 907 908 static void 909 process_connected(struct c4iw_ep *ep) 910 { 911 struct socket *so = ep->com.so; 912 913 if ((so->so_state & SS_ISCONNECTED) && !so->so_error) { 914 if (send_mpa_req(ep)) 915 goto err; 916 } else { 917 connect_reply_upcall(ep, -so->so_error); 918 goto err; 919 } 920 return; 921 err: 922 close_socket(so); 923 ep->com.state = DEAD; 924 c4iw_put_ep(&ep->com); 925 return; 926 } 927 928 static inline bool c4iw_zero_addr(struct sockaddr *addr) 929 { 930 struct in6_addr *ip6; 931 932 if (addr->sa_family == AF_INET) 933 return (((struct sockaddr_in *)addr)->sin_addr.s_addr == 0); 934 else { 935 ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; 936 return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | 937 ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; 938 } 939 } 940 941 #define _IN_LOOPBACK(i) (((in_addr_t)(i) & 0xff000000) == 0x7f000000) 942 static inline bool c4iw_loopback_addr(struct sockaddr *addr, struct vnet *vnet) 943 { 944 bool ret; 945 946 if (addr->sa_family == AF_INET) { 947 if (vnet == NULL) 948 ret = _IN_LOOPBACK(ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 949 else { 950 CURVNET_SET_QUIET(vnet); 951 ret = IN_LOOPBACK(ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 952 CURVNET_RESTORE(); 953 } 954 } else { 955 ret = IN6_IS_ADDR_LOOPBACK(&((struct sockaddr_in6 *) addr)->sin6_addr); 956 } 957 return (ret); 958 } 959 #undef _IN_LOOPBACK 960 961 static inline bool c4iw_any_addr(struct sockaddr *addr, struct vnet *vnet) 962 { 963 return c4iw_zero_addr(addr) || c4iw_loopback_addr(addr, vnet); 964 } 965 966 static void 967 process_newconn(struct c4iw_listen_ep *master_lep, struct socket *new_so) 968 { 969 struct c4iw_listen_ep *real_lep = NULL; 970 struct c4iw_ep *new_ep = NULL; 971 struct sockaddr_storage remote = { .ss_len = sizeof(remote) }; 972 int ret = 0; 973 974 MPASS(new_so != NULL); 975 976 if (c4iw_any_addr((struct sockaddr *)&master_lep->com.local_addr, 977 new_so->so_vnet)) { 978 /* Here we need to find the 'real_lep' that belongs to the 979 * incomming socket's network interface, such that the newly 980 * created 'ep' can be attached to the real 'lep'. 981 */ 982 real_lep = find_real_listen_ep(master_lep, new_so); 983 if (real_lep == NULL) { 984 CTR2(KTR_IW_CXGBE, "%s: Could not find the real listen " 985 "ep for sock: %p", __func__, new_so); 986 log(LOG_ERR,"%s: Could not find the real listen ep for " 987 "sock: %p\n", __func__, new_so); 988 /* FIXME: properly free the 'new_so' in failure case. 989 * Use of soabort() and soclose() are not legal 990 * here(before soaccept()). 991 */ 992 return; 993 } 994 } else /* for Non-Wildcard address, master_lep is always the real_lep */ 995 real_lep = master_lep; 996 997 new_ep = alloc_ep(sizeof(*new_ep), GFP_KERNEL); 998 999 CTR6(KTR_IW_CXGBE, "%s: master_lep %p, real_lep: %p, new ep %p, " 1000 "listening so %p, new so %p", __func__, master_lep, real_lep, 1001 new_ep, master_lep->com.so, new_so); 1002 1003 new_ep->com.dev = real_lep->com.dev; 1004 new_ep->com.so = new_so; 1005 new_ep->com.cm_id = NULL; 1006 new_ep->com.thread = real_lep->com.thread; 1007 new_ep->parent_ep = real_lep; 1008 1009 GET_LOCAL_ADDR(&new_ep->com.local_addr, new_so); 1010 GET_REMOTE_ADDR(&new_ep->com.remote_addr, new_so); 1011 c4iw_get_ep(&real_lep->com); 1012 timer_setup(&new_ep->timer, ep_timeout, 0); 1013 new_ep->com.state = MPA_REQ_WAIT; 1014 1015 setiwsockopt(new_so); 1016 ret = soaccept(new_so, (struct sockaddr *)&remote); 1017 if (ret != 0) { 1018 CTR4(KTR_IW_CXGBE, 1019 "%s:listen sock:%p, new sock:%p, ret:%d", 1020 __func__, master_lep->com.so, new_so, ret); 1021 soclose(new_so); 1022 c4iw_put_ep(&new_ep->com); 1023 c4iw_put_ep(&real_lep->com); 1024 return; 1025 } 1026 1027 START_EP_TIMER(new_ep); 1028 1029 /* MPA request might have been queued up on the socket already, so we 1030 * initialize the socket/upcall_handler under lock to prevent processing 1031 * MPA request on another thread(via process_req()) simultaneously. 1032 */ 1033 c4iw_get_ep(&new_ep->com); /* Dereferenced at the end below, this is to 1034 avoid freeing of ep before ep unlock. */ 1035 mutex_lock(&new_ep->com.mutex); 1036 init_iwarp_socket(new_so, &new_ep->com); 1037 1038 ret = process_mpa_request(new_ep); 1039 if (ret) { 1040 /* ABORT */ 1041 c4iw_ep_disconnect(new_ep, 1, GFP_KERNEL); 1042 c4iw_put_ep(&real_lep->com); 1043 } 1044 mutex_unlock(&new_ep->com.mutex); 1045 c4iw_put_ep(&new_ep->com); 1046 return; 1047 } 1048 1049 static int 1050 add_ep_to_req_list(struct c4iw_ep *ep, int new_ep_event) 1051 { 1052 unsigned long flag; 1053 1054 spin_lock_irqsave(&req_lock, flag); 1055 if (ep && ep->com.so) { 1056 ep->com.ep_events |= new_ep_event; 1057 if (!ep->com.entry.tqe_prev) { 1058 c4iw_get_ep(&ep->com); 1059 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry); 1060 queue_work(c4iw_taskq, &c4iw_task); 1061 } 1062 } 1063 spin_unlock_irqrestore(&req_lock, flag); 1064 1065 return (0); 1066 } 1067 1068 static int 1069 c4iw_so_upcall(struct socket *so, void *arg, int waitflag) 1070 { 1071 struct c4iw_ep *ep = arg; 1072 1073 CTR6(KTR_IW_CXGBE, 1074 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p", 1075 __func__, so, so->so_state, ep, states[ep->com.state], 1076 ep->com.entry.tqe_prev); 1077 1078 MPASS(ep->com.so == so); 1079 /* 1080 * Wake up any threads waiting in rdma_init()/rdma_fini(), 1081 * with locks held. 1082 */ 1083 if (so->so_error || c4iw_stopped(&ep->com.dev->rdev)) 1084 c4iw_wake_up_noref(ep->com.wr_waitp, -ECONNRESET); 1085 add_ep_to_req_list(ep, C4IW_EVENT_SOCKET); 1086 1087 return (SU_OK); 1088 } 1089 1090 1091 static int 1092 terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) 1093 { 1094 struct adapter *sc = iq->adapter; 1095 const struct cpl_rdma_terminate *cpl = mtod(m, const void *); 1096 unsigned int tid = GET_TID(cpl); 1097 struct toepcb *toep = lookup_tid(sc, tid); 1098 struct socket *so; 1099 struct c4iw_ep *ep; 1100 1101 INP_WLOCK(toep->inp); 1102 so = inp_inpcbtosocket(toep->inp); 1103 ep = so->so_rcv.sb_upcallarg; 1104 INP_WUNLOCK(toep->inp); 1105 1106 CTR3(KTR_IW_CXGBE, "%s: so %p, ep %p", __func__, so, ep); 1107 add_ep_to_req_list(ep, C4IW_EVENT_TERM); 1108 1109 return 0; 1110 } 1111 1112 static void 1113 process_socket_event(struct c4iw_ep *ep) 1114 { 1115 int state = ep->com.state; 1116 struct socket *so = ep->com.so; 1117 1118 if (ep->com.state == DEAD) { 1119 CTR3(KTR_IW_CXGBE, "%s: Pending socket event discarded " 1120 "ep %p ep_state %s", __func__, ep, states[state]); 1121 return; 1122 } 1123 1124 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, " 1125 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state, 1126 so->so_error, so->so_rcv.sb_state, ep, states[state]); 1127 1128 if (state == CONNECTING) { 1129 process_connected(ep); 1130 return; 1131 } 1132 1133 if (state == LISTEN) { 1134 struct c4iw_listen_ep *lep = (struct c4iw_listen_ep *)ep; 1135 struct socket *listen_so = so, *new_so = NULL; 1136 int error = 0; 1137 1138 SOLISTEN_LOCK(listen_so); 1139 do { 1140 error = solisten_dequeue(listen_so, &new_so, 1141 SOCK_NONBLOCK); 1142 if (error) { 1143 CTR4(KTR_IW_CXGBE, "%s: lep %p listen_so %p " 1144 "error %d", __func__, lep, listen_so, 1145 error); 1146 return; 1147 } 1148 process_newconn(lep, new_so); 1149 1150 /* solisten_dequeue() unlocks while return, so aquire 1151 * lock again for sol_qlen and also for next iteration. 1152 */ 1153 SOLISTEN_LOCK(listen_so); 1154 } while (listen_so->sol_qlen); 1155 SOLISTEN_UNLOCK(listen_so); 1156 1157 return; 1158 } 1159 1160 /* connection error */ 1161 if (so->so_error) { 1162 process_conn_error(ep); 1163 return; 1164 } 1165 1166 /* peer close */ 1167 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state <= CLOSING) { 1168 process_peer_close(ep); 1169 /* 1170 * check whether socket disconnect event is pending before 1171 * returning. Fallthrough if yes. 1172 */ 1173 if (!(so->so_state & SS_ISDISCONNECTED)) 1174 return; 1175 } 1176 1177 /* close complete */ 1178 if (so->so_state & SS_ISDISCONNECTED) { 1179 process_close_complete(ep); 1180 return; 1181 } 1182 1183 /* rx data */ 1184 if (sbused(&ep->com.so->so_rcv)) { 1185 process_data(ep); 1186 return; 1187 } 1188 1189 /* Socket events for 'MPA Request Received' and 'Close Complete' 1190 * were already processed earlier in their previous events handlers. 1191 * Hence, these socket events are skipped. 1192 * And any other socket events must have handled above. 1193 */ 1194 MPASS((ep->com.state == MPA_REQ_RCVD) || (ep->com.state == MORIBUND)); 1195 1196 if ((ep->com.state != MPA_REQ_RCVD) && (ep->com.state != MORIBUND)) 1197 log(LOG_ERR, "%s: Unprocessed socket event so %p, " 1198 "so_state 0x%x, so_err %d, sb_state 0x%x, ep %p, ep_state %s\n", 1199 __func__, so, so->so_state, so->so_error, so->so_rcv.sb_state, 1200 ep, states[state]); 1201 1202 } 1203 1204 SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 1205 "iw_cxgbe driver parameters"); 1206 1207 static int dack_mode = 0; 1208 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RWTUN, &dack_mode, 0, 1209 "Delayed ack mode (default = 0)"); 1210 1211 int c4iw_max_read_depth = 8; 1212 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RWTUN, &c4iw_max_read_depth, 0, 1213 "Per-connection max ORD/IRD (default = 8)"); 1214 1215 static int enable_tcp_timestamps; 1216 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RWTUN, &enable_tcp_timestamps, 0, 1217 "Enable tcp timestamps (default = 0)"); 1218 1219 static int enable_tcp_sack; 1220 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RWTUN, &enable_tcp_sack, 0, 1221 "Enable tcp SACK (default = 0)"); 1222 1223 static int enable_tcp_window_scaling = 1; 1224 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RWTUN, &enable_tcp_window_scaling, 0, 1225 "Enable tcp window scaling (default = 1)"); 1226 1227 int c4iw_debug = 0; 1228 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RWTUN, &c4iw_debug, 0, 1229 "Enable debug logging (default = 0)"); 1230 1231 static int peer2peer = 1; 1232 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RWTUN, &peer2peer, 0, 1233 "Support peer2peer ULPs (default = 1)"); 1234 1235 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 1236 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RWTUN, &p2p_type, 0, 1237 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)"); 1238 1239 static int ep_timeout_secs = 60; 1240 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RWTUN, &ep_timeout_secs, 0, 1241 "CM Endpoint operation timeout in seconds (default = 60)"); 1242 1243 static int mpa_rev = 1; 1244 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RWTUN, &mpa_rev, 0, 1245 "MPA Revision, 0 supports amso1100, 1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)"); 1246 1247 static int markers_enabled; 1248 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RWTUN, &markers_enabled, 0, 1249 "Enable MPA MARKERS (default(0) = disabled)"); 1250 1251 static int crc_enabled = 1; 1252 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RWTUN, &crc_enabled, 0, 1253 "Enable MPA CRC (default(1) = enabled)"); 1254 1255 static int rcv_win = 256 * 1024; 1256 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RWTUN, &rcv_win, 0, 1257 "TCP receive window in bytes (default = 256KB)"); 1258 1259 static int snd_win = 128 * 1024; 1260 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RWTUN, &snd_win, 0, 1261 "TCP send window in bytes (default = 128KB)"); 1262 1263 int use_dsgl = 1; 1264 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, use_dsgl, CTLFLAG_RWTUN, &use_dsgl, 0, 1265 "Use DSGL for PBL/FastReg (default=1)"); 1266 1267 int inline_threshold = 128; 1268 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, inline_threshold, CTLFLAG_RWTUN, &inline_threshold, 0, 1269 "inline vs dsgl threshold (default=128)"); 1270 1271 static int reuseaddr = 0; 1272 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, reuseaddr, CTLFLAG_RWTUN, &reuseaddr, 0, 1273 "Enable SO_REUSEADDR & SO_REUSEPORT socket options on all iWARP client connections(default = 0)"); 1274 1275 static void 1276 start_ep_timer(struct c4iw_ep *ep) 1277 { 1278 1279 if (timer_pending(&ep->timer)) { 1280 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep); 1281 printk(KERN_ERR "%s timer already started! ep %p\n", __func__, 1282 ep); 1283 return; 1284 } 1285 clear_bit(TIMEOUT, &ep->com.flags); 1286 c4iw_get_ep(&ep->com); 1287 ep->timer.expires = jiffies + ep_timeout_secs * HZ; 1288 add_timer(&ep->timer); 1289 } 1290 1291 static int 1292 stop_ep_timer(struct c4iw_ep *ep) 1293 { 1294 1295 del_timer_sync(&ep->timer); 1296 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 1297 c4iw_put_ep(&ep->com); 1298 return 0; 1299 } 1300 return 1; 1301 } 1302 1303 static void * 1304 alloc_ep(int size, gfp_t gfp) 1305 { 1306 struct c4iw_ep_common *epc; 1307 1308 epc = kzalloc(size, gfp); 1309 if (epc == NULL) 1310 return (NULL); 1311 1312 epc->wr_waitp = c4iw_alloc_wr_wait(gfp); 1313 if (!epc->wr_waitp) { 1314 kfree(epc); 1315 return (NULL); 1316 } 1317 kref_init(&epc->kref); 1318 mutex_init(&epc->mutex); 1319 c4iw_init_wr_wait(epc->wr_waitp); 1320 1321 return (epc); 1322 } 1323 1324 void _c4iw_free_ep(struct kref *kref) 1325 { 1326 struct c4iw_ep *ep; 1327 #if defined(KTR) || defined(INVARIANTS) 1328 struct c4iw_ep_common *epc; 1329 #endif 1330 1331 ep = container_of(kref, struct c4iw_ep, com.kref); 1332 #if defined(KTR) || defined(INVARIANTS) 1333 epc = &ep->com; 1334 #endif 1335 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list", 1336 __func__, epc)); 1337 if (test_bit(QP_REFERENCED, &ep->com.flags)) 1338 deref_qp(ep); 1339 CTR4(KTR_IW_CXGBE, "%s: ep %p, history 0x%lx, flags 0x%lx", 1340 __func__, ep, epc->history, epc->flags); 1341 c4iw_put_wr_wait(ep->com.wr_waitp); 1342 kfree(ep); 1343 } 1344 1345 static void release_ep_resources(struct c4iw_ep *ep) 1346 { 1347 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep); 1348 set_bit(RELEASE_RESOURCES, &ep->com.flags); 1349 c4iw_put_ep(&ep->com); 1350 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep); 1351 } 1352 1353 static int 1354 send_mpa_req(struct c4iw_ep *ep) 1355 { 1356 int mpalen; 1357 struct mpa_message *mpa; 1358 struct mpa_v2_conn_params mpa_v2_params; 1359 struct mbuf *m; 1360 char mpa_rev_to_use = mpa_rev; 1361 int err = 0; 1362 1363 if (ep->retry_with_mpa_v1) 1364 mpa_rev_to_use = 1; 1365 mpalen = sizeof(*mpa) + ep->plen; 1366 if (mpa_rev_to_use == 2) 1367 mpalen += sizeof(struct mpa_v2_conn_params); 1368 1369 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1370 if (mpa == NULL) { 1371 err = -ENOMEM; 1372 CTR3(KTR_IW_CXGBE, "%s:smr1 ep: %p , error: %d", 1373 __func__, ep, err); 1374 goto err; 1375 } 1376 1377 memset(mpa, 0, mpalen); 1378 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 1379 mpa->flags = (crc_enabled ? MPA_CRC : 0) | 1380 (markers_enabled ? MPA_MARKERS : 0) | 1381 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); 1382 mpa->private_data_size = htons(ep->plen); 1383 mpa->revision = mpa_rev_to_use; 1384 1385 if (mpa_rev_to_use == 1) { 1386 ep->tried_with_mpa_v1 = 1; 1387 ep->retry_with_mpa_v1 = 0; 1388 } 1389 1390 if (mpa_rev_to_use == 2) { 1391 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1392 sizeof(struct mpa_v2_conn_params)); 1393 mpa_v2_params.ird = htons((u16)ep->ird); 1394 mpa_v2_params.ord = htons((u16)ep->ord); 1395 1396 if (peer2peer) { 1397 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1398 1399 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1400 mpa_v2_params.ord |= 1401 htons(MPA_V2_RDMA_WRITE_RTR); 1402 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1403 mpa_v2_params.ord |= 1404 htons(MPA_V2_RDMA_READ_RTR); 1405 } 1406 } 1407 memcpy(mpa->private_data, &mpa_v2_params, 1408 sizeof(struct mpa_v2_conn_params)); 1409 1410 if (ep->plen) { 1411 1412 memcpy(mpa->private_data + 1413 sizeof(struct mpa_v2_conn_params), 1414 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1415 } 1416 } else { 1417 1418 if (ep->plen) 1419 memcpy(mpa->private_data, 1420 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1421 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep); 1422 } 1423 1424 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1425 if (m == NULL) { 1426 err = -ENOMEM; 1427 CTR3(KTR_IW_CXGBE, "%s:smr2 ep: %p , error: %d", 1428 __func__, ep, err); 1429 free(mpa, M_CXGBE); 1430 goto err; 1431 } 1432 m_copyback(m, 0, mpalen, (void *)mpa); 1433 free(mpa, M_CXGBE); 1434 1435 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1436 ep->com.thread); 1437 if (err) { 1438 CTR3(KTR_IW_CXGBE, "%s:smr3 ep: %p , error: %d", 1439 __func__, ep, err); 1440 goto err; 1441 } 1442 1443 START_EP_TIMER(ep); 1444 ep->com.state = MPA_REQ_SENT; 1445 ep->mpa_attr.initiator = 1; 1446 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1447 return 0; 1448 err: 1449 connect_reply_upcall(ep, err); 1450 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1451 return err; 1452 } 1453 1454 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 1455 { 1456 int mpalen ; 1457 struct mpa_message *mpa; 1458 struct mpa_v2_conn_params mpa_v2_params; 1459 struct mbuf *m; 1460 int err; 1461 1462 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid, 1463 ep->plen); 1464 1465 mpalen = sizeof(*mpa) + plen; 1466 1467 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1468 1469 mpalen += sizeof(struct mpa_v2_conn_params); 1470 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep, 1471 ep->mpa_attr.version, mpalen); 1472 } 1473 1474 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1475 if (mpa == NULL) 1476 return (-ENOMEM); 1477 1478 memset(mpa, 0, mpalen); 1479 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1480 mpa->flags = MPA_REJECT; 1481 mpa->revision = mpa_rev; 1482 mpa->private_data_size = htons(plen); 1483 1484 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1485 1486 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1487 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1488 sizeof(struct mpa_v2_conn_params)); 1489 mpa_v2_params.ird = htons(((u16)ep->ird) | 1490 (peer2peer ? MPA_V2_PEER2PEER_MODEL : 1491 0)); 1492 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 1493 (p2p_type == 1494 FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 1495 MPA_V2_RDMA_WRITE_RTR : p2p_type == 1496 FW_RI_INIT_P2PTYPE_READ_REQ ? 1497 MPA_V2_RDMA_READ_RTR : 0) : 0)); 1498 memcpy(mpa->private_data, &mpa_v2_params, 1499 sizeof(struct mpa_v2_conn_params)); 1500 1501 if (ep->plen) 1502 memcpy(mpa->private_data + 1503 sizeof(struct mpa_v2_conn_params), pdata, plen); 1504 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep, 1505 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen); 1506 } else 1507 if (plen) 1508 memcpy(mpa->private_data, pdata, plen); 1509 1510 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1511 if (m == NULL) { 1512 free(mpa, M_CXGBE); 1513 return (-ENOMEM); 1514 } 1515 m_copyback(m, 0, mpalen, (void *)mpa); 1516 free(mpa, M_CXGBE); 1517 1518 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread); 1519 if (!err) 1520 ep->snd_seq += mpalen; 1521 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err); 1522 return err; 1523 } 1524 1525 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 1526 { 1527 int mpalen; 1528 struct mpa_message *mpa; 1529 struct mbuf *m; 1530 struct mpa_v2_conn_params mpa_v2_params; 1531 int err; 1532 1533 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep); 1534 1535 mpalen = sizeof(*mpa) + plen; 1536 1537 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1538 1539 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep, 1540 ep->mpa_attr.version); 1541 mpalen += sizeof(struct mpa_v2_conn_params); 1542 } 1543 1544 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1545 if (mpa == NULL) 1546 return (-ENOMEM); 1547 1548 memset(mpa, 0, sizeof(*mpa)); 1549 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1550 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 1551 (markers_enabled ? MPA_MARKERS : 0); 1552 mpa->revision = ep->mpa_attr.version; 1553 mpa->private_data_size = htons(plen); 1554 1555 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1556 1557 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1558 mpa->private_data_size += 1559 htons(sizeof(struct mpa_v2_conn_params)); 1560 mpa_v2_params.ird = htons((u16)ep->ird); 1561 mpa_v2_params.ord = htons((u16)ep->ord); 1562 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep, 1563 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord); 1564 1565 if (peer2peer && (ep->mpa_attr.p2p_type != 1566 FW_RI_INIT_P2PTYPE_DISABLED)) { 1567 1568 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1569 1570 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1571 1572 mpa_v2_params.ord |= 1573 htons(MPA_V2_RDMA_WRITE_RTR); 1574 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d", 1575 __func__, ep, p2p_type, mpa_v2_params.ird, 1576 mpa_v2_params.ord); 1577 } 1578 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1579 1580 mpa_v2_params.ord |= 1581 htons(MPA_V2_RDMA_READ_RTR); 1582 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d", 1583 __func__, ep, p2p_type, mpa_v2_params.ird, 1584 mpa_v2_params.ord); 1585 } 1586 } 1587 1588 memcpy(mpa->private_data, &mpa_v2_params, 1589 sizeof(struct mpa_v2_conn_params)); 1590 1591 if (ep->plen) 1592 memcpy(mpa->private_data + 1593 sizeof(struct mpa_v2_conn_params), pdata, plen); 1594 } else 1595 if (plen) 1596 memcpy(mpa->private_data, pdata, plen); 1597 1598 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1599 if (m == NULL) { 1600 free(mpa, M_CXGBE); 1601 return (-ENOMEM); 1602 } 1603 m_copyback(m, 0, mpalen, (void *)mpa); 1604 free(mpa, M_CXGBE); 1605 1606 1607 ep->com.state = MPA_REP_SENT; 1608 ep->snd_seq += mpalen; 1609 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1610 ep->com.thread); 1611 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err); 1612 return err; 1613 } 1614 1615 1616 1617 static void close_complete_upcall(struct c4iw_ep *ep, int status) 1618 { 1619 struct iw_cm_event event; 1620 1621 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep); 1622 memset(&event, 0, sizeof(event)); 1623 event.event = IW_CM_EVENT_CLOSE; 1624 event.status = status; 1625 1626 if (ep->com.cm_id) { 1627 1628 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep); 1629 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1630 deref_cm_id(&ep->com); 1631 set_bit(CLOSE_UPCALL, &ep->com.history); 1632 } 1633 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep); 1634 } 1635 1636 static int 1637 send_abort(struct c4iw_ep *ep) 1638 { 1639 struct socket *so = ep->com.so; 1640 struct sockopt sopt; 1641 int rc; 1642 struct linger l; 1643 1644 CTR5(KTR_IW_CXGBE, "%s ep %p so %p state %s tid %d", __func__, ep, so, 1645 states[ep->com.state], ep->hwtid); 1646 1647 l.l_onoff = 1; 1648 l.l_linger = 0; 1649 1650 /* linger_time of 0 forces RST to be sent */ 1651 sopt.sopt_dir = SOPT_SET; 1652 sopt.sopt_level = SOL_SOCKET; 1653 sopt.sopt_name = SO_LINGER; 1654 sopt.sopt_val = (caddr_t)&l; 1655 sopt.sopt_valsize = sizeof l; 1656 sopt.sopt_td = NULL; 1657 rc = -sosetopt(so, &sopt); 1658 if (rc != 0) { 1659 log(LOG_ERR, "%s: sosetopt(%p, linger = 0) failed with %d.\n", 1660 __func__, so, rc); 1661 } 1662 1663 uninit_iwarp_socket(so); 1664 soclose(so); 1665 set_bit(ABORT_CONN, &ep->com.history); 1666 1667 /* 1668 * TBD: iw_cxgbe driver should receive ABORT reply for every ABORT 1669 * request it has sent. But the current TOE driver is not propagating 1670 * this ABORT reply event (via do_abort_rpl) to iw_cxgbe. So as a work- 1671 * around de-refererece 'ep' here instead of doing it in abort_rpl() 1672 * handler(not yet implemented) of iw_cxgbe driver. 1673 */ 1674 release_ep_resources(ep); 1675 ep->com.state = DEAD; 1676 1677 return (0); 1678 } 1679 1680 static void peer_close_upcall(struct c4iw_ep *ep) 1681 { 1682 struct iw_cm_event event; 1683 1684 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep); 1685 memset(&event, 0, sizeof(event)); 1686 event.event = IW_CM_EVENT_DISCONNECT; 1687 1688 if (ep->com.cm_id) { 1689 1690 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep); 1691 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1692 set_bit(DISCONN_UPCALL, &ep->com.history); 1693 } 1694 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep); 1695 } 1696 1697 static void peer_abort_upcall(struct c4iw_ep *ep) 1698 { 1699 struct iw_cm_event event; 1700 1701 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep); 1702 memset(&event, 0, sizeof(event)); 1703 event.event = IW_CM_EVENT_CLOSE; 1704 event.status = -ECONNRESET; 1705 1706 if (ep->com.cm_id) { 1707 1708 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep); 1709 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1710 deref_cm_id(&ep->com); 1711 set_bit(ABORT_UPCALL, &ep->com.history); 1712 } 1713 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep); 1714 } 1715 1716 static void connect_reply_upcall(struct c4iw_ep *ep, int status) 1717 { 1718 struct iw_cm_event event; 1719 1720 CTR3(KTR_IW_CXGBE, "%s:cruB %p, status: %d", __func__, ep, status); 1721 memset(&event, 0, sizeof(event)); 1722 event.event = IW_CM_EVENT_CONNECT_REPLY; 1723 event.status = ((status == -ECONNABORTED) || (status == -EPIPE)) ? 1724 -ECONNRESET : status; 1725 event.local_addr = ep->com.local_addr; 1726 event.remote_addr = ep->com.remote_addr; 1727 1728 if ((status == 0) || (status == -ECONNREFUSED)) { 1729 1730 if (!ep->tried_with_mpa_v1) { 1731 1732 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep); 1733 /* this means MPA_v2 is used */ 1734 event.ord = ep->ird; 1735 event.ird = ep->ord; 1736 event.private_data_len = ep->plen - 1737 sizeof(struct mpa_v2_conn_params); 1738 event.private_data = ep->mpa_pkt + 1739 sizeof(struct mpa_message) + 1740 sizeof(struct mpa_v2_conn_params); 1741 } else { 1742 1743 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep); 1744 /* this means MPA_v1 is used */ 1745 event.ord = c4iw_max_read_depth; 1746 event.ird = c4iw_max_read_depth; 1747 event.private_data_len = ep->plen; 1748 event.private_data = ep->mpa_pkt + 1749 sizeof(struct mpa_message); 1750 } 1751 } 1752 1753 if (ep->com.cm_id) { 1754 1755 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep); 1756 set_bit(CONN_RPL_UPCALL, &ep->com.history); 1757 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1758 } 1759 1760 if(status == -ECONNABORTED) { 1761 1762 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status); 1763 return; 1764 } 1765 1766 if (status < 0) { 1767 1768 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status); 1769 deref_cm_id(&ep->com); 1770 } 1771 1772 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep); 1773 } 1774 1775 static int connect_request_upcall(struct c4iw_ep *ep) 1776 { 1777 struct iw_cm_event event; 1778 int ret; 1779 1780 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep, 1781 ep->tried_with_mpa_v1); 1782 1783 memset(&event, 0, sizeof(event)); 1784 event.event = IW_CM_EVENT_CONNECT_REQUEST; 1785 event.local_addr = ep->com.local_addr; 1786 event.remote_addr = ep->com.remote_addr; 1787 event.provider_data = ep; 1788 1789 if (!ep->tried_with_mpa_v1) { 1790 /* this means MPA_v2 is used */ 1791 event.ord = ep->ord; 1792 event.ird = ep->ird; 1793 event.private_data_len = ep->plen - 1794 sizeof(struct mpa_v2_conn_params); 1795 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 1796 sizeof(struct mpa_v2_conn_params); 1797 } else { 1798 1799 /* this means MPA_v1 is used. Send max supported */ 1800 event.ord = c4iw_max_read_depth; 1801 event.ird = c4iw_max_read_depth; 1802 event.private_data_len = ep->plen; 1803 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 1804 } 1805 1806 c4iw_get_ep(&ep->com); 1807 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, 1808 &event); 1809 if(ret) { 1810 CTR3(KTR_IW_CXGBE, "%s: ep %p, Failure while notifying event to" 1811 " IWCM, err:%d", __func__, ep, ret); 1812 c4iw_put_ep(&ep->com); 1813 } else 1814 /* Dereference parent_ep only in success case. 1815 * In case of failure, parent_ep is dereferenced by the caller 1816 * of process_mpa_request(). 1817 */ 1818 c4iw_put_ep(&ep->parent_ep->com); 1819 1820 set_bit(CONNREQ_UPCALL, &ep->com.history); 1821 return ret; 1822 } 1823 1824 static void established_upcall(struct c4iw_ep *ep) 1825 { 1826 struct iw_cm_event event; 1827 1828 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep); 1829 memset(&event, 0, sizeof(event)); 1830 event.event = IW_CM_EVENT_ESTABLISHED; 1831 event.ird = ep->ord; 1832 event.ord = ep->ird; 1833 1834 if (ep->com.cm_id) { 1835 1836 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep); 1837 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1838 set_bit(ESTAB_UPCALL, &ep->com.history); 1839 } 1840 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep); 1841 } 1842 1843 1844 #define RELAXED_IRD_NEGOTIATION 1 1845 1846 /* 1847 * process_mpa_reply - process streaming mode MPA reply 1848 * 1849 * Returns: 1850 * 1851 * 0 upon success indicating a connect request was delivered to the ULP 1852 * or the mpa request is incomplete but valid so far. 1853 * 1854 * 1 if a failure requires the caller to close the connection. 1855 * 1856 * 2 if a failure requires the caller to abort the connection. 1857 */ 1858 static int process_mpa_reply(struct c4iw_ep *ep) 1859 { 1860 struct mpa_message *mpa; 1861 struct mpa_v2_conn_params *mpa_v2_params; 1862 u16 plen; 1863 u16 resp_ird, resp_ord; 1864 u8 rtr_mismatch = 0, insuff_ird = 0; 1865 struct c4iw_qp_attributes attrs = {0}; 1866 enum c4iw_qp_attr_mask mask; 1867 int err; 1868 struct mbuf *top, *m; 1869 int flags = MSG_DONTWAIT; 1870 struct uio uio; 1871 int disconnect = 0; 1872 1873 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep); 1874 1875 /* 1876 * Stop mpa timer. If it expired, then 1877 * we ignore the MPA reply. process_timeout() 1878 * will abort the connection. 1879 */ 1880 if (STOP_EP_TIMER(ep)) 1881 return 0; 1882 1883 uio.uio_resid = 1000000; 1884 uio.uio_td = ep->com.thread; 1885 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags); 1886 1887 if (err) { 1888 1889 if (err == EWOULDBLOCK) { 1890 1891 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep); 1892 START_EP_TIMER(ep); 1893 return 0; 1894 } 1895 err = -err; 1896 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep); 1897 goto err; 1898 } 1899 1900 if (ep->com.so->so_rcv.sb_mb) { 1901 1902 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep); 1903 printf("%s data after soreceive called! so %p sb_mb %p top %p\n", 1904 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top); 1905 } 1906 1907 m = top; 1908 1909 do { 1910 1911 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep); 1912 /* 1913 * If we get more than the supported amount of private data 1914 * then we must fail this connection. 1915 */ 1916 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) { 1917 1918 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep, 1919 ep->mpa_pkt_len + m->m_len); 1920 err = (-EINVAL); 1921 goto err_stop_timer; 1922 } 1923 1924 /* 1925 * copy the new data into our accumulation buffer. 1926 */ 1927 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len])); 1928 ep->mpa_pkt_len += m->m_len; 1929 if (!m->m_next) 1930 m = m->m_nextpkt; 1931 else 1932 m = m->m_next; 1933 } while (m); 1934 1935 m_freem(top); 1936 /* 1937 * if we don't even have the mpa message, then bail. 1938 */ 1939 if (ep->mpa_pkt_len < sizeof(*mpa)) { 1940 return 0; 1941 } 1942 mpa = (struct mpa_message *) ep->mpa_pkt; 1943 1944 /* Validate MPA header. */ 1945 if (mpa->revision > mpa_rev) { 1946 1947 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep, 1948 mpa->revision, mpa_rev); 1949 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, " 1950 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1951 err = -EPROTO; 1952 goto err_stop_timer; 1953 } 1954 1955 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1956 1957 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep); 1958 err = -EPROTO; 1959 goto err_stop_timer; 1960 } 1961 1962 plen = ntohs(mpa->private_data_size); 1963 1964 /* 1965 * Fail if there's too much private data. 1966 */ 1967 if (plen > MPA_MAX_PRIVATE_DATA) { 1968 1969 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep); 1970 err = -EPROTO; 1971 goto err_stop_timer; 1972 } 1973 1974 /* 1975 * If plen does not account for pkt size 1976 */ 1977 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1978 1979 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep); 1980 STOP_EP_TIMER(ep); 1981 err = -EPROTO; 1982 goto err_stop_timer; 1983 } 1984 1985 ep->plen = (u8) plen; 1986 1987 /* 1988 * If we don't have all the pdata yet, then bail. 1989 * We'll continue process when more data arrives. 1990 */ 1991 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) { 1992 1993 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep); 1994 return 0; 1995 } 1996 1997 if (mpa->flags & MPA_REJECT) { 1998 1999 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep); 2000 err = -ECONNREFUSED; 2001 goto err_stop_timer; 2002 } 2003 2004 /* 2005 * If we get here we have accumulated the entire mpa 2006 * start reply message including private data. And 2007 * the MPA header is valid. 2008 */ 2009 ep->com.state = FPDU_MODE; 2010 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2011 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2012 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2013 ep->mpa_attr.version = mpa->revision; 2014 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2015 2016 if (mpa->revision == 2) { 2017 2018 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep); 2019 ep->mpa_attr.enhanced_rdma_conn = 2020 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2021 2022 if (ep->mpa_attr.enhanced_rdma_conn) { 2023 2024 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep); 2025 mpa_v2_params = (struct mpa_v2_conn_params *) 2026 (ep->mpa_pkt + sizeof(*mpa)); 2027 resp_ird = ntohs(mpa_v2_params->ird) & 2028 MPA_V2_IRD_ORD_MASK; 2029 resp_ord = ntohs(mpa_v2_params->ord) & 2030 MPA_V2_IRD_ORD_MASK; 2031 2032 /* 2033 * This is a double-check. Ideally, below checks are 2034 * not required since ird/ord stuff has been taken 2035 * care of in c4iw_accept_cr 2036 */ 2037 if (ep->ird < resp_ord) { 2038 if (RELAXED_IRD_NEGOTIATION && resp_ord <= 2039 ep->com.dev->rdev.adap->params.max_ordird_qp) 2040 ep->ird = resp_ord; 2041 else 2042 insuff_ird = 1; 2043 } else if (ep->ird > resp_ord) { 2044 ep->ird = resp_ord; 2045 } 2046 if (ep->ord > resp_ird) { 2047 if (RELAXED_IRD_NEGOTIATION) 2048 ep->ord = resp_ird; 2049 else 2050 insuff_ird = 1; 2051 } 2052 if (insuff_ird) { 2053 err = -ENOMEM; 2054 ep->ird = resp_ord; 2055 ep->ord = resp_ird; 2056 } 2057 2058 if (ntohs(mpa_v2_params->ird) & 2059 MPA_V2_PEER2PEER_MODEL) { 2060 2061 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep); 2062 if (ntohs(mpa_v2_params->ord) & 2063 MPA_V2_RDMA_WRITE_RTR) { 2064 2065 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep); 2066 ep->mpa_attr.p2p_type = 2067 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2068 } 2069 else if (ntohs(mpa_v2_params->ord) & 2070 MPA_V2_RDMA_READ_RTR) { 2071 2072 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep); 2073 ep->mpa_attr.p2p_type = 2074 FW_RI_INIT_P2PTYPE_READ_REQ; 2075 } 2076 } 2077 } 2078 } else { 2079 2080 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep); 2081 2082 if (mpa->revision == 1) { 2083 2084 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep); 2085 2086 if (peer2peer) { 2087 2088 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep); 2089 ep->mpa_attr.p2p_type = p2p_type; 2090 } 2091 } 2092 } 2093 2094 if (set_tcpinfo(ep)) { 2095 2096 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep); 2097 printf("%s set_tcpinfo error\n", __func__); 2098 err = -ECONNRESET; 2099 goto err; 2100 } 2101 2102 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, " 2103 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__, 2104 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2105 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 2106 ep->mpa_attr.p2p_type); 2107 2108 /* 2109 * If responder's RTR does not match with that of initiator, assign 2110 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 2111 * generated when moving QP to RTS state. 2112 * A TERM message will be sent after QP has moved to RTS state 2113 */ 2114 if ((ep->mpa_attr.version == 2) && peer2peer && 2115 (ep->mpa_attr.p2p_type != p2p_type)) { 2116 2117 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep); 2118 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2119 rtr_mismatch = 1; 2120 } 2121 2122 2123 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2124 attrs.mpa_attr = ep->mpa_attr; 2125 attrs.max_ird = ep->ird; 2126 attrs.max_ord = ep->ord; 2127 attrs.llp_stream_handle = ep; 2128 attrs.next_state = C4IW_QP_STATE_RTS; 2129 2130 mask = C4IW_QP_ATTR_NEXT_STATE | 2131 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 2132 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 2133 2134 /* bind QP and TID with INIT_WR */ 2135 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2136 2137 if (err) { 2138 2139 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep); 2140 goto err; 2141 } 2142 2143 /* 2144 * If responder's RTR requirement did not match with what initiator 2145 * supports, generate TERM message 2146 */ 2147 if (rtr_mismatch) { 2148 2149 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep); 2150 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 2151 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2152 attrs.ecode = MPA_NOMATCH_RTR; 2153 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2154 attrs.send_term = 1; 2155 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2156 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2157 err = -ENOMEM; 2158 disconnect = 1; 2159 goto out; 2160 } 2161 2162 /* 2163 * Generate TERM if initiator IRD is not sufficient for responder 2164 * provided ORD. Currently, we do the same behaviour even when 2165 * responder provided IRD is also not sufficient as regards to 2166 * initiator ORD. 2167 */ 2168 if (insuff_ird) { 2169 2170 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep); 2171 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 2172 __func__); 2173 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2174 attrs.ecode = MPA_INSUFF_IRD; 2175 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2176 attrs.send_term = 1; 2177 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2178 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2179 err = -ENOMEM; 2180 disconnect = 1; 2181 goto out; 2182 } 2183 goto out; 2184 err_stop_timer: 2185 STOP_EP_TIMER(ep); 2186 err: 2187 disconnect = 2; 2188 out: 2189 connect_reply_upcall(ep, err); 2190 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep); 2191 return disconnect; 2192 } 2193 2194 /* 2195 * process_mpa_request - process streaming mode MPA request 2196 * 2197 * Returns: 2198 * 2199 * 0 upon success indicating a connect request was delivered to the ULP 2200 * or the mpa request is incomplete but valid so far. 2201 * 2202 * 1 if a failure requires the caller to close the connection. 2203 * 2204 * 2 if a failure requires the caller to abort the connection. 2205 */ 2206 static int 2207 process_mpa_request(struct c4iw_ep *ep) 2208 { 2209 struct mpa_message *mpa; 2210 struct mpa_v2_conn_params *mpa_v2_params; 2211 u16 plen; 2212 int flags = MSG_DONTWAIT; 2213 int rc; 2214 struct iovec iov; 2215 struct uio uio; 2216 enum c4iw_ep_state state = ep->com.state; 2217 2218 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]); 2219 2220 if (state != MPA_REQ_WAIT) 2221 return 0; 2222 2223 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len]; 2224 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2225 uio.uio_iov = &iov; 2226 uio.uio_iovcnt = 1; 2227 uio.uio_offset = 0; 2228 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2229 uio.uio_segflg = UIO_SYSSPACE; 2230 uio.uio_rw = UIO_READ; 2231 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */ 2232 2233 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags); 2234 if (rc == EAGAIN) 2235 return 0; 2236 else if (rc) 2237 goto err_stop_timer; 2238 2239 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data", 2240 __func__, ep->com.so)); 2241 ep->mpa_pkt_len += uio.uio_offset; 2242 2243 /* 2244 * If we get more than the supported amount of private data then we must 2245 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another 2246 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last 2247 * byte is filled by the soreceive above. 2248 */ 2249 2250 /* Don't even have the MPA message. Wait for more data to arrive. */ 2251 if (ep->mpa_pkt_len < sizeof(*mpa)) 2252 return 0; 2253 mpa = (struct mpa_message *) ep->mpa_pkt; 2254 2255 /* 2256 * Validate MPA Header. 2257 */ 2258 if (mpa->revision > mpa_rev) { 2259 log(LOG_ERR, "%s: MPA version mismatch. Local = %d," 2260 " Received = %d\n", __func__, mpa_rev, mpa->revision); 2261 goto err_stop_timer; 2262 } 2263 2264 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) 2265 goto err_stop_timer; 2266 2267 /* 2268 * Fail if there's too much private data. 2269 */ 2270 plen = ntohs(mpa->private_data_size); 2271 if (plen > MPA_MAX_PRIVATE_DATA) 2272 goto err_stop_timer; 2273 2274 /* 2275 * If plen does not account for pkt size 2276 */ 2277 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) 2278 goto err_stop_timer; 2279 2280 ep->plen = (u8) plen; 2281 2282 /* 2283 * If we don't have all the pdata yet, then bail. 2284 */ 2285 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 2286 return 0; 2287 2288 /* 2289 * If we get here we have accumulated the entire mpa 2290 * start reply message including private data. 2291 */ 2292 ep->mpa_attr.initiator = 0; 2293 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2294 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2295 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2296 ep->mpa_attr.version = mpa->revision; 2297 if (mpa->revision == 1) 2298 ep->tried_with_mpa_v1 = 1; 2299 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2300 2301 if (mpa->revision == 2) { 2302 ep->mpa_attr.enhanced_rdma_conn = 2303 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2304 if (ep->mpa_attr.enhanced_rdma_conn) { 2305 mpa_v2_params = (struct mpa_v2_conn_params *) 2306 (ep->mpa_pkt + sizeof(*mpa)); 2307 ep->ird = ntohs(mpa_v2_params->ird) & 2308 MPA_V2_IRD_ORD_MASK; 2309 ep->ird = min_t(u32, ep->ird, 2310 cur_max_read_depth(ep->com.dev)); 2311 ep->ord = ntohs(mpa_v2_params->ord) & 2312 MPA_V2_IRD_ORD_MASK; 2313 ep->ord = min_t(u32, ep->ord, 2314 cur_max_read_depth(ep->com.dev)); 2315 CTR3(KTR_IW_CXGBE, "%s initiator ird %u ord %u", 2316 __func__, ep->ird, ep->ord); 2317 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) 2318 if (peer2peer) { 2319 if (ntohs(mpa_v2_params->ord) & 2320 MPA_V2_RDMA_WRITE_RTR) 2321 ep->mpa_attr.p2p_type = 2322 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2323 else if (ntohs(mpa_v2_params->ord) & 2324 MPA_V2_RDMA_READ_RTR) 2325 ep->mpa_attr.p2p_type = 2326 FW_RI_INIT_P2PTYPE_READ_REQ; 2327 } 2328 } 2329 } else if (mpa->revision == 1 && peer2peer) 2330 ep->mpa_attr.p2p_type = p2p_type; 2331 2332 if (set_tcpinfo(ep)) 2333 goto err_stop_timer; 2334 2335 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, " 2336 "xmit_marker_enabled = %d, version = %d", __func__, 2337 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2338 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); 2339 2340 ep->com.state = MPA_REQ_RCVD; 2341 STOP_EP_TIMER(ep); 2342 2343 /* drive upcall */ 2344 if (ep->parent_ep->com.state != DEAD) 2345 if (connect_request_upcall(ep)) 2346 goto err_out; 2347 return 0; 2348 2349 err_stop_timer: 2350 STOP_EP_TIMER(ep); 2351 err_out: 2352 return 2; 2353 } 2354 2355 /* 2356 * Upcall from the adapter indicating data has been transmitted. 2357 * For us its just the single MPA request or reply. We can now free 2358 * the skb holding the mpa message. 2359 */ 2360 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 2361 { 2362 #ifdef KTR 2363 int err; 2364 #endif 2365 struct c4iw_ep *ep = to_ep(cm_id); 2366 int abort = 0; 2367 2368 mutex_lock(&ep->com.mutex); 2369 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep); 2370 2371 if (ep->com.state != MPA_REQ_RCVD) { 2372 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep); 2373 mutex_unlock(&ep->com.mutex); 2374 c4iw_put_ep(&ep->com); 2375 return -ECONNRESET; 2376 } 2377 set_bit(ULP_REJECT, &ep->com.history); 2378 2379 if (mpa_rev == 0) { 2380 2381 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep); 2382 abort = 1; 2383 } 2384 else { 2385 2386 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep); 2387 abort = send_mpa_reject(ep, pdata, pdata_len); 2388 } 2389 mutex_unlock(&ep->com.mutex); 2390 2391 STOP_EP_TIMER(ep); 2392 #ifdef KTR 2393 err = c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2394 #else 2395 c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2396 #endif 2397 c4iw_put_ep(&ep->com); 2398 CTR3(KTR_IW_CXGBE, "%s:crc4 %p, err: %d", __func__, ep, err); 2399 return 0; 2400 } 2401 2402 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2403 { 2404 int err; 2405 struct c4iw_qp_attributes attrs = {0}; 2406 enum c4iw_qp_attr_mask mask; 2407 struct c4iw_ep *ep = to_ep(cm_id); 2408 struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 2409 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 2410 int abort = 0; 2411 2412 mutex_lock(&ep->com.mutex); 2413 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep); 2414 2415 if ((ep->com.state == DEAD) || 2416 (ep->com.state != MPA_REQ_RCVD)) { 2417 2418 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep); 2419 err = -ECONNRESET; 2420 goto err_out; 2421 } 2422 2423 BUG_ON(!qp); 2424 2425 set_bit(ULP_ACCEPT, &ep->com.history); 2426 2427 if ((conn_param->ord > c4iw_max_read_depth) || 2428 (conn_param->ird > c4iw_max_read_depth)) { 2429 2430 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep); 2431 err = -EINVAL; 2432 goto err_abort; 2433 } 2434 2435 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 2436 2437 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep); 2438 2439 if (conn_param->ord > ep->ird) { 2440 if (RELAXED_IRD_NEGOTIATION) { 2441 conn_param->ord = ep->ird; 2442 } else { 2443 ep->ird = conn_param->ird; 2444 ep->ord = conn_param->ord; 2445 send_mpa_reject(ep, conn_param->private_data, 2446 conn_param->private_data_len); 2447 err = -ENOMEM; 2448 goto err_abort; 2449 } 2450 } 2451 if (conn_param->ird < ep->ord) { 2452 if (RELAXED_IRD_NEGOTIATION && 2453 ep->ord <= h->rdev.adap->params.max_ordird_qp) { 2454 conn_param->ird = ep->ord; 2455 } else { 2456 err = -ENOMEM; 2457 goto err_abort; 2458 } 2459 } 2460 } 2461 ep->ird = conn_param->ird; 2462 ep->ord = conn_param->ord; 2463 2464 if (ep->mpa_attr.version == 1) { 2465 if (peer2peer && ep->ird == 0) 2466 ep->ird = 1; 2467 } else { 2468 if (peer2peer && 2469 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) && 2470 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0) 2471 ep->ird = 1; 2472 } 2473 2474 CTR4(KTR_IW_CXGBE, "%s %d ird %d ord %d", __func__, __LINE__, 2475 ep->ird, ep->ord); 2476 2477 ep->com.cm_id = cm_id; 2478 ref_cm_id(&ep->com); 2479 ep->com.qp = qp; 2480 ref_qp(ep); 2481 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2482 2483 /* bind QP to EP and move to RTS */ 2484 attrs.mpa_attr = ep->mpa_attr; 2485 attrs.max_ird = ep->ird; 2486 attrs.max_ord = ep->ord; 2487 attrs.llp_stream_handle = ep; 2488 attrs.next_state = C4IW_QP_STATE_RTS; 2489 2490 /* bind QP and TID with INIT_WR */ 2491 mask = C4IW_QP_ATTR_NEXT_STATE | 2492 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 2493 C4IW_QP_ATTR_MPA_ATTR | 2494 C4IW_QP_ATTR_MAX_IRD | 2495 C4IW_QP_ATTR_MAX_ORD; 2496 2497 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2498 if (err) { 2499 CTR3(KTR_IW_CXGBE, "%s:caca %p, err: %d", __func__, ep, err); 2500 goto err_defef_cm_id; 2501 } 2502 2503 err = send_mpa_reply(ep, conn_param->private_data, 2504 conn_param->private_data_len); 2505 if (err) { 2506 CTR3(KTR_IW_CXGBE, "%s:cacb %p, err: %d", __func__, ep, err); 2507 goto err_defef_cm_id; 2508 } 2509 2510 ep->com.state = FPDU_MODE; 2511 established_upcall(ep); 2512 mutex_unlock(&ep->com.mutex); 2513 c4iw_put_ep(&ep->com); 2514 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep); 2515 return 0; 2516 err_defef_cm_id: 2517 deref_cm_id(&ep->com); 2518 err_abort: 2519 abort = 1; 2520 err_out: 2521 mutex_unlock(&ep->com.mutex); 2522 if (abort) 2523 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 2524 c4iw_put_ep(&ep->com); 2525 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep); 2526 return err; 2527 } 2528 2529 static int 2530 c4iw_sock_create(struct sockaddr_storage *laddr, struct socket **so) 2531 { 2532 int ret; 2533 int size, on; 2534 struct socket *sock = NULL; 2535 struct sockopt sopt; 2536 2537 ret = sock_create_kern(laddr->ss_family, 2538 SOCK_STREAM, IPPROTO_TCP, &sock); 2539 if (ret) { 2540 CTR2(KTR_IW_CXGBE, "%s:Failed to create TCP socket. err %d", 2541 __func__, ret); 2542 return ret; 2543 } 2544 2545 if (reuseaddr) { 2546 bzero(&sopt, sizeof(struct sockopt)); 2547 sopt.sopt_dir = SOPT_SET; 2548 sopt.sopt_level = SOL_SOCKET; 2549 sopt.sopt_name = SO_REUSEADDR; 2550 on = 1; 2551 sopt.sopt_val = &on; 2552 sopt.sopt_valsize = sizeof(on); 2553 ret = -sosetopt(sock, &sopt); 2554 if (ret != 0) { 2555 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEADDR) " 2556 "failed with %d.\n", __func__, sock, ret); 2557 } 2558 bzero(&sopt, sizeof(struct sockopt)); 2559 sopt.sopt_dir = SOPT_SET; 2560 sopt.sopt_level = SOL_SOCKET; 2561 sopt.sopt_name = SO_REUSEPORT; 2562 on = 1; 2563 sopt.sopt_val = &on; 2564 sopt.sopt_valsize = sizeof(on); 2565 ret = -sosetopt(sock, &sopt); 2566 if (ret != 0) { 2567 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEPORT) " 2568 "failed with %d.\n", __func__, sock, ret); 2569 } 2570 } 2571 2572 ret = -sobind(sock, (struct sockaddr *)laddr, curthread); 2573 if (ret) { 2574 CTR2(KTR_IW_CXGBE, "%s:Failed to bind socket. err %p", 2575 __func__, ret); 2576 sock_release(sock); 2577 return ret; 2578 } 2579 2580 size = laddr->ss_family == AF_INET6 ? 2581 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 2582 ret = sock_getname(sock, (struct sockaddr *)laddr, &size, 0); 2583 if (ret) { 2584 CTR2(KTR_IW_CXGBE, "%s:sock_getname failed. err %p", 2585 __func__, ret); 2586 sock_release(sock); 2587 return ret; 2588 } 2589 2590 *so = sock; 2591 return 0; 2592 } 2593 2594 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2595 { 2596 int err = 0; 2597 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2598 struct c4iw_ep *ep = NULL; 2599 if_t nh_ifp; /* Logical egress interface */ 2600 struct epoch_tracker et; 2601 #ifdef VIMAGE 2602 struct rdma_cm_id *rdma_id = (struct rdma_cm_id*)cm_id->context; 2603 struct vnet *vnet = rdma_id->route.addr.dev_addr.net; 2604 #endif 2605 2606 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id); 2607 2608 if (__predict_false(c4iw_stopped(&dev->rdev))) 2609 return -EIO; 2610 2611 if ((conn_param->ord > c4iw_max_read_depth) || 2612 (conn_param->ird > c4iw_max_read_depth)) { 2613 2614 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id); 2615 err = -EINVAL; 2616 goto out; 2617 } 2618 ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2619 cm_id->provider_data = ep; 2620 2621 timer_setup(&ep->timer, ep_timeout, 0); 2622 ep->plen = conn_param->private_data_len; 2623 2624 if (ep->plen) { 2625 2626 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep); 2627 memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 2628 conn_param->private_data, ep->plen); 2629 } 2630 ep->ird = conn_param->ird; 2631 ep->ord = conn_param->ord; 2632 2633 if (peer2peer && ep->ord == 0) { 2634 2635 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep); 2636 ep->ord = 1; 2637 } 2638 2639 ep->com.dev = dev; 2640 ep->com.cm_id = cm_id; 2641 ref_cm_id(&ep->com); 2642 ep->com.qp = get_qhp(dev, conn_param->qpn); 2643 2644 if (!ep->com.qp) { 2645 2646 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep); 2647 err = -EINVAL; 2648 goto fail; 2649 } 2650 ref_qp(ep); 2651 ep->com.thread = curthread; 2652 2653 NET_EPOCH_ENTER(et); 2654 CURVNET_SET(vnet); 2655 err = get_ifnet_from_raddr(&cm_id->remote_addr, &nh_ifp); 2656 CURVNET_RESTORE(); 2657 NET_EPOCH_EXIT(et); 2658 2659 if (err) { 2660 2661 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep); 2662 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 2663 return -EHOSTUNREACH; 2664 } 2665 2666 if (!(if_getcapenable(nh_ifp) & IFCAP_TOE) || 2667 TOEDEV(nh_ifp) == NULL) { 2668 err = -ENOPROTOOPT; 2669 goto fail; 2670 } 2671 ep->com.state = CONNECTING; 2672 ep->tos = 0; 2673 ep->com.local_addr = cm_id->m_local_addr; 2674 ep->com.remote_addr = cm_id->m_remote_addr; 2675 2676 err = c4iw_sock_create(&cm_id->m_local_addr, &ep->com.so); 2677 if (err) 2678 goto fail; 2679 2680 setiwsockopt(ep->com.so); 2681 init_iwarp_socket(ep->com.so, &ep->com); 2682 err = -soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr, 2683 ep->com.thread); 2684 if (err) 2685 goto fail_free_so; 2686 CTR2(KTR_IW_CXGBE, "%s:ccE, ep %p", __func__, ep); 2687 return 0; 2688 2689 fail_free_so: 2690 uninit_iwarp_socket(ep->com.so); 2691 ep->com.state = DEAD; 2692 sock_release(ep->com.so); 2693 fail: 2694 deref_cm_id(&ep->com); 2695 c4iw_put_ep(&ep->com); 2696 ep = NULL; 2697 out: 2698 CTR2(KTR_IW_CXGBE, "%s:ccE Error %d", __func__, err); 2699 return err; 2700 } 2701 2702 /* 2703 * iwcm->create_listen. Returns -errno on failure. 2704 */ 2705 int 2706 c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 2707 { 2708 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2709 struct c4iw_listen_ep *lep = NULL; 2710 struct listen_port_info *port_info = NULL; 2711 int rc = 0; 2712 2713 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, backlog %d", __func__, cm_id, 2714 backlog); 2715 if (c4iw_stopped(&dev->rdev)) { 2716 CTR2(KTR_IW_CXGBE, "%s: cm_id %p, stopped", __func__, cm_id); 2717 return -EIO; 2718 } 2719 lep = alloc_ep(sizeof(*lep), GFP_KERNEL); 2720 lep->com.cm_id = cm_id; 2721 ref_cm_id(&lep->com); 2722 lep->com.dev = dev; 2723 lep->backlog = backlog; 2724 lep->com.local_addr = cm_id->m_local_addr; 2725 lep->com.thread = curthread; 2726 cm_id->provider_data = lep; 2727 lep->com.state = LISTEN; 2728 2729 /* In case of INDADDR_ANY, ibcore creates cmid for each device and 2730 * invokes iw_cxgbe listener callbacks assuming that iw_cxgbe creates 2731 * HW listeners for each device seperately. But toecore expects single 2732 * solisten() call with INADDR_ANY address to create HW listeners on 2733 * all devices for a given port number. So iw_cxgbe driver calls 2734 * solisten() only once for INADDR_ANY(usually done at first time 2735 * listener callback from ibcore). And all the subsequent INADDR_ANY 2736 * listener callbacks from ibcore(for the same port address) do not 2737 * invoke solisten() as first listener callback has already created 2738 * listeners for all other devices(via solisten). 2739 */ 2740 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr, NULL)) { 2741 port_info = add_ep_to_listenlist(lep); 2742 /* skip solisten() if refcnt > 1, as the listeners were 2743 * already created by 'Master lep' 2744 */ 2745 if (port_info->refcnt > 1) { 2746 /* As there will be only one listener socket for a TCP 2747 * port, copy Master lep's socket pointer to other lep's 2748 * that are belonging to same TCP port. 2749 */ 2750 struct c4iw_listen_ep *head_lep = 2751 container_of(port_info->lep_list.next, 2752 struct c4iw_listen_ep, listen_ep_list); 2753 lep->com.so = head_lep->com.so; 2754 goto out; 2755 } 2756 } 2757 rc = c4iw_sock_create(&cm_id->m_local_addr, &lep->com.so); 2758 if (rc) { 2759 CTR2(KTR_IW_CXGBE, "%s:Failed to create socket. err %d", 2760 __func__, rc); 2761 goto fail; 2762 } 2763 2764 rc = -solisten(lep->com.so, backlog, curthread); 2765 if (rc) { 2766 CTR3(KTR_IW_CXGBE, "%s:Failed to listen on sock:%p. err %d", 2767 __func__, lep->com.so, rc); 2768 goto fail_free_so; 2769 } 2770 init_iwarp_socket(lep->com.so, &lep->com); 2771 out: 2772 return 0; 2773 2774 fail_free_so: 2775 sock_release(lep->com.so); 2776 fail: 2777 if (port_info) 2778 rem_ep_from_listenlist(lep); 2779 deref_cm_id(&lep->com); 2780 c4iw_put_ep(&lep->com); 2781 return rc; 2782 } 2783 2784 int 2785 c4iw_destroy_listen(struct iw_cm_id *cm_id) 2786 { 2787 struct c4iw_listen_ep *lep = to_listen_ep(cm_id); 2788 2789 mutex_lock(&lep->com.mutex); 2790 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, state %s", __func__, cm_id, 2791 states[lep->com.state]); 2792 2793 lep->com.state = DEAD; 2794 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr, 2795 lep->com.so->so_vnet)) { 2796 /* if no refcount then close listen socket */ 2797 if (!rem_ep_from_listenlist(lep)) 2798 close_socket(lep->com.so); 2799 } else 2800 close_socket(lep->com.so); 2801 deref_cm_id(&lep->com); 2802 mutex_unlock(&lep->com.mutex); 2803 c4iw_put_ep(&lep->com); 2804 return 0; 2805 } 2806 2807 int __c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2808 { 2809 int ret; 2810 mutex_lock(&ep->com.mutex); 2811 ret = c4iw_ep_disconnect(ep, abrupt, gfp); 2812 mutex_unlock(&ep->com.mutex); 2813 return ret; 2814 } 2815 2816 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2817 { 2818 int ret = 0; 2819 int close = 0; 2820 struct c4iw_rdev *rdev; 2821 2822 2823 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep); 2824 2825 rdev = &ep->com.dev->rdev; 2826 2827 if (c4iw_stopped(rdev)) { 2828 CTR3(KTR_IW_CXGBE, "%s:ced1 stopped %p %s", __func__, ep, 2829 states[ep->com.state]); 2830 if (ep->com.state != DEAD) { 2831 send_abort(ep); 2832 ep->com.state = DEAD; 2833 } 2834 close_complete_upcall(ep, -ECONNRESET); 2835 return ECONNRESET; 2836 } 2837 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep, 2838 states[ep->com.state]); 2839 2840 /* 2841 * Ref the ep here in case we have fatal errors causing the 2842 * ep to be released and freed. 2843 */ 2844 c4iw_get_ep(&ep->com); 2845 switch (ep->com.state) { 2846 2847 case MPA_REQ_WAIT: 2848 case MPA_REQ_SENT: 2849 case MPA_REQ_RCVD: 2850 case MPA_REP_SENT: 2851 case FPDU_MODE: 2852 close = 1; 2853 if (abrupt) 2854 ep->com.state = ABORTING; 2855 else { 2856 ep->com.state = CLOSING; 2857 START_EP_TIMER(ep); 2858 } 2859 set_bit(CLOSE_SENT, &ep->com.flags); 2860 break; 2861 2862 case CLOSING: 2863 2864 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2865 2866 close = 1; 2867 if (abrupt) { 2868 STOP_EP_TIMER(ep); 2869 ep->com.state = ABORTING; 2870 } else 2871 ep->com.state = MORIBUND; 2872 } 2873 break; 2874 2875 case MORIBUND: 2876 case ABORTING: 2877 case DEAD: 2878 CTR3(KTR_IW_CXGBE, 2879 "%s ignoring disconnect ep %p state %u", __func__, 2880 ep, ep->com.state); 2881 break; 2882 2883 default: 2884 BUG(); 2885 break; 2886 } 2887 2888 2889 if (close) { 2890 2891 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep); 2892 2893 if (abrupt) { 2894 2895 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep); 2896 set_bit(EP_DISC_ABORT, &ep->com.history); 2897 close_complete_upcall(ep, -ECONNRESET); 2898 send_abort(ep); 2899 } else { 2900 2901 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep); 2902 set_bit(EP_DISC_CLOSE, &ep->com.history); 2903 2904 if (!ep->parent_ep) 2905 ep->com.state = MORIBUND; 2906 2907 CURVNET_SET(ep->com.so->so_vnet); 2908 ret = sodisconnect(ep->com.so); 2909 CURVNET_RESTORE(); 2910 if (ret) { 2911 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep); 2912 STOP_EP_TIMER(ep); 2913 send_abort(ep); 2914 ep->com.state = DEAD; 2915 close_complete_upcall(ep, -ECONNRESET); 2916 set_bit(EP_DISC_FAIL, &ep->com.history); 2917 if (ep->com.qp) { 2918 struct c4iw_qp_attributes attrs = {0}; 2919 2920 attrs.next_state = C4IW_QP_STATE_ERROR; 2921 ret = c4iw_modify_qp( 2922 ep->com.dev, ep->com.qp, 2923 C4IW_QP_ATTR_NEXT_STATE, 2924 &attrs, 1); 2925 CTR3(KTR_IW_CXGBE, "%s:ced7 %p ret %d", 2926 __func__, ep, ret); 2927 } 2928 } 2929 } 2930 } 2931 c4iw_put_ep(&ep->com); 2932 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep); 2933 return ret; 2934 } 2935 2936 #ifdef C4IW_EP_REDIRECT 2937 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, 2938 struct l2t_entry *l2t) 2939 { 2940 struct c4iw_ep *ep = ctx; 2941 2942 if (ep->dst != old) 2943 return 0; 2944 2945 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, 2946 l2t); 2947 dst_hold(new); 2948 cxgb4_l2t_release(ep->l2t); 2949 ep->l2t = l2t; 2950 dst_release(old); 2951 ep->dst = new; 2952 return 1; 2953 } 2954 #endif 2955 2956 2957 2958 static void ep_timeout(struct timer_list *t) 2959 { 2960 struct c4iw_ep *ep = timer_container_of(ep, t, timer); 2961 2962 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 2963 2964 /* 2965 * Only insert if it is not already on the list. 2966 */ 2967 if (!(ep->com.ep_events & C4IW_EVENT_TIMEOUT)) { 2968 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep); 2969 add_ep_to_req_list(ep, C4IW_EVENT_TIMEOUT); 2970 } 2971 } 2972 } 2973 2974 static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl) 2975 { 2976 uint64_t val = be64toh(*rpl); 2977 int ret; 2978 struct c4iw_wr_wait *wr_waitp; 2979 2980 ret = (int)((val >> 8) & 0xff); 2981 wr_waitp = (struct c4iw_wr_wait *)rpl[1]; 2982 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret); 2983 if (wr_waitp) 2984 c4iw_wake_up_deref(wr_waitp, ret ? -ret : 0); 2985 2986 return (0); 2987 } 2988 2989 static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl) 2990 { 2991 struct cqe_list_entry *cle; 2992 unsigned long flag; 2993 2994 cle = malloc(sizeof(*cle), M_CXGBE, M_NOWAIT); 2995 cle->rhp = sc->iwarp_softc; 2996 cle->err_cqe = *(const struct t4_cqe *)(&rpl[0]); 2997 2998 spin_lock_irqsave(&err_cqe_lock, flag); 2999 list_add_tail(&cle->entry, &err_cqe_list); 3000 queue_work(c4iw_taskq, &c4iw_task); 3001 spin_unlock_irqrestore(&err_cqe_lock, flag); 3002 3003 return (0); 3004 } 3005 3006 static int 3007 process_terminate(struct c4iw_ep *ep) 3008 { 3009 struct c4iw_qp_attributes attrs = {0}; 3010 unsigned int tid = ep->hwtid; 3011 3012 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep); 3013 3014 if (ep && ep->com.qp) { 3015 pr_warn("TERM received tid %u qpid %u\n", tid, 3016 ep->com.qp->wq.sq.qid); 3017 attrs.next_state = C4IW_QP_STATE_TERMINATE; 3018 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 3019 &attrs, 1); 3020 } else 3021 pr_warn("TERM received tid %u no ep/qp\n", tid); 3022 3023 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep); 3024 3025 return 0; 3026 } 3027 3028 int __init c4iw_cm_init(void) 3029 { 3030 3031 t4_register_cpl_handler(CPL_RDMA_TERMINATE, terminate); 3032 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, fw6_wr_rpl); 3033 t4_register_fw_msg_handler(FW6_TYPE_CQE, fw6_cqe_handler); 3034 t4_register_an_handler(c4iw_ev_handler); 3035 3036 TAILQ_INIT(&req_list); 3037 spin_lock_init(&req_lock); 3038 INIT_LIST_HEAD(&err_cqe_list); 3039 spin_lock_init(&err_cqe_lock); 3040 3041 INIT_WORK(&c4iw_task, process_req); 3042 3043 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe"); 3044 if (!c4iw_taskq) 3045 return -ENOMEM; 3046 3047 return 0; 3048 } 3049 3050 void __exit c4iw_cm_term(void) 3051 { 3052 WARN_ON(!TAILQ_EMPTY(&req_list)); 3053 WARN_ON(!list_empty(&err_cqe_list)); 3054 flush_workqueue(c4iw_taskq); 3055 destroy_workqueue(c4iw_taskq); 3056 3057 t4_register_cpl_handler(CPL_RDMA_TERMINATE, NULL); 3058 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, NULL); 3059 t4_register_fw_msg_handler(FW6_TYPE_CQE, NULL); 3060 t4_register_an_handler(NULL); 3061 } 3062 #endif 3063