1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2009-2013, 2016 Chelsio, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include "opt_inet.h" 38 39 #ifdef TCP_OFFLOAD 40 #include <sys/types.h> 41 #include <sys/malloc.h> 42 #include <sys/socket.h> 43 #include <sys/socketvar.h> 44 #include <sys/sockio.h> 45 #include <sys/taskqueue.h> 46 #include <netinet/in.h> 47 #include <net/route.h> 48 49 #include <netinet/in_systm.h> 50 #include <netinet/in_pcb.h> 51 #include <netinet6/in6_pcb.h> 52 #include <netinet/ip.h> 53 #include <netinet/in_fib.h> 54 #include <netinet6/in6_fib.h> 55 #include <netinet6/scope6_var.h> 56 #include <netinet/ip_var.h> 57 #include <netinet/tcp_var.h> 58 #include <netinet/tcp.h> 59 #include <netinet/tcpip.h> 60 61 #include <netinet/toecore.h> 62 63 struct sge_iq; 64 struct rss_header; 65 struct cpl_set_tcb_rpl; 66 #include <linux/types.h> 67 #include "offload.h" 68 #include "tom/t4_tom.h" 69 70 #define TOEPCB(so) ((struct toepcb *)(so_sototcpcb((so))->t_toe)) 71 72 #include "iw_cxgbe.h" 73 #include <linux/module.h> 74 #include <linux/workqueue.h> 75 #include <linux/notifier.h> 76 #include <linux/inetdevice.h> 77 #include <linux/if_vlan.h> 78 #include <net/netevent.h> 79 80 static spinlock_t req_lock; 81 static TAILQ_HEAD(c4iw_ep_list, c4iw_ep_common) req_list; 82 static struct work_struct c4iw_task; 83 static struct workqueue_struct *c4iw_taskq; 84 static LIST_HEAD(err_cqe_list); 85 static spinlock_t err_cqe_lock; 86 static LIST_HEAD(listen_port_list); 87 static DEFINE_MUTEX(listen_port_mutex); 88 89 static void process_req(struct work_struct *ctx); 90 static void start_ep_timer(struct c4iw_ep *ep); 91 static int stop_ep_timer(struct c4iw_ep *ep); 92 static int set_tcpinfo(struct c4iw_ep *ep); 93 static void process_timeout(struct c4iw_ep *ep); 94 static void process_err_cqes(void); 95 static void *alloc_ep(int size, gfp_t flags); 96 static void close_socket(struct socket *so); 97 static int send_mpa_req(struct c4iw_ep *ep); 98 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen); 99 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen); 100 static void close_complete_upcall(struct c4iw_ep *ep, int status); 101 static int send_abort(struct c4iw_ep *ep); 102 static void peer_close_upcall(struct c4iw_ep *ep); 103 static void peer_abort_upcall(struct c4iw_ep *ep); 104 static void connect_reply_upcall(struct c4iw_ep *ep, int status); 105 static int connect_request_upcall(struct c4iw_ep *ep); 106 static void established_upcall(struct c4iw_ep *ep); 107 static int process_mpa_reply(struct c4iw_ep *ep); 108 static int process_mpa_request(struct c4iw_ep *ep); 109 static void process_peer_close(struct c4iw_ep *ep); 110 static void process_conn_error(struct c4iw_ep *ep); 111 static void process_close_complete(struct c4iw_ep *ep); 112 static void ep_timeout(unsigned long arg); 113 static void setiwsockopt(struct socket *so); 114 static void init_iwarp_socket(struct socket *so, void *arg); 115 static void uninit_iwarp_socket(struct socket *so); 116 static void process_data(struct c4iw_ep *ep); 117 static void process_connected(struct c4iw_ep *ep); 118 static int c4iw_so_upcall(struct socket *so, void *arg, int waitflag); 119 static void process_socket_event(struct c4iw_ep *ep); 120 static void release_ep_resources(struct c4iw_ep *ep); 121 static int process_terminate(struct c4iw_ep *ep); 122 static int terminate(struct sge_iq *iq, const struct rss_header *rss, 123 struct mbuf *m); 124 static int add_ep_to_req_list(struct c4iw_ep *ep, int ep_events); 125 static struct listen_port_info * 126 add_ep_to_listenlist(struct c4iw_listen_ep *lep); 127 static int rem_ep_from_listenlist(struct c4iw_listen_ep *lep); 128 static struct c4iw_listen_ep * 129 find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so); 130 static int get_ifnet_from_raddr(struct sockaddr_storage *raddr, 131 struct ifnet **ifp); 132 static void process_newconn(struct c4iw_listen_ep *master_lep, 133 struct socket *new_so); 134 #define START_EP_TIMER(ep) \ 135 do { \ 136 CTR3(KTR_IW_CXGBE, "start_ep_timer (%s:%d) ep %p", \ 137 __func__, __LINE__, (ep)); \ 138 start_ep_timer(ep); \ 139 } while (0) 140 141 #define STOP_EP_TIMER(ep) \ 142 ({ \ 143 CTR3(KTR_IW_CXGBE, "stop_ep_timer (%s:%d) ep %p", \ 144 __func__, __LINE__, (ep)); \ 145 stop_ep_timer(ep); \ 146 }) 147 148 #define GET_LOCAL_ADDR(pladdr, so) \ 149 do { \ 150 struct sockaddr_storage *__a = NULL; \ 151 struct inpcb *__inp = sotoinpcb(so); \ 152 KASSERT(__inp != NULL, \ 153 ("GET_LOCAL_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 154 if (__inp->inp_vflag & INP_IPV4) \ 155 in_getsockaddr(so, (struct sockaddr **)&__a); \ 156 else \ 157 in6_getsockaddr(so, (struct sockaddr **)&__a); \ 158 *(pladdr) = *__a; \ 159 free(__a, M_SONAME); \ 160 } while (0) 161 162 #define GET_REMOTE_ADDR(praddr, so) \ 163 do { \ 164 struct sockaddr_storage *__a = NULL; \ 165 struct inpcb *__inp = sotoinpcb(so); \ 166 KASSERT(__inp != NULL, \ 167 ("GET_REMOTE_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 168 if (__inp->inp_vflag & INP_IPV4) \ 169 in_getpeeraddr(so, (struct sockaddr **)&__a); \ 170 else \ 171 in6_getpeeraddr(so, (struct sockaddr **)&__a); \ 172 *(praddr) = *__a; \ 173 free(__a, M_SONAME); \ 174 } while (0) 175 176 #ifdef KTR 177 static char *states[] = { 178 "idle", 179 "listen", 180 "connecting", 181 "mpa_wait_req", 182 "mpa_req_sent", 183 "mpa_req_rcvd", 184 "mpa_rep_sent", 185 "fpdu_mode", 186 "aborting", 187 "closing", 188 "moribund", 189 "dead", 190 NULL, 191 }; 192 #endif 193 194 static void deref_cm_id(struct c4iw_ep_common *epc) 195 { 196 epc->cm_id->rem_ref(epc->cm_id); 197 epc->cm_id = NULL; 198 set_bit(CM_ID_DEREFED, &epc->history); 199 } 200 201 static void ref_cm_id(struct c4iw_ep_common *epc) 202 { 203 set_bit(CM_ID_REFED, &epc->history); 204 epc->cm_id->add_ref(epc->cm_id); 205 } 206 207 static void deref_qp(struct c4iw_ep *ep) 208 { 209 c4iw_qp_rem_ref(&ep->com.qp->ibqp); 210 clear_bit(QP_REFERENCED, &ep->com.flags); 211 set_bit(QP_DEREFED, &ep->com.history); 212 } 213 214 static void ref_qp(struct c4iw_ep *ep) 215 { 216 set_bit(QP_REFERENCED, &ep->com.flags); 217 set_bit(QP_REFED, &ep->com.history); 218 c4iw_qp_add_ref(&ep->com.qp->ibqp); 219 } 220 /* allocated per TCP port while listening */ 221 struct listen_port_info { 222 uint16_t port_num; /* TCP port address */ 223 struct list_head list; /* belongs to listen_port_list */ 224 struct list_head lep_list; /* per port lep list */ 225 uint32_t refcnt; /* number of lep's listening */ 226 }; 227 228 /* 229 * Following two lists are used to manage INADDR_ANY listeners: 230 * 1)listen_port_list 231 * 2)lep_list 232 * 233 * Below is the INADDR_ANY listener lists overview on a system with a two port 234 * adapter: 235 * |------------------| 236 * |listen_port_list | 237 * |------------------| 238 * | 239 * | |-----------| |-----------| 240 * | | port_num:X| | port_num:X| 241 * |--------------|-list------|-------|-list------|-------.... 242 * | lep_list----| | lep_list----| 243 * | refcnt | | | refcnt | | 244 * | | | | | | 245 * | | | | | | 246 * |-----------| | |-----------| | 247 * | | 248 * | | 249 * | | 250 * | | lep1 lep2 251 * | | |----------------| |----------------| 252 * | |----| listen_ep_list |----| listen_ep_list | 253 * | |----------------| |----------------| 254 * | 255 * | 256 * | lep1 lep2 257 * | |----------------| |----------------| 258 * |---| listen_ep_list |----| listen_ep_list | 259 * |----------------| |----------------| 260 * 261 * Because of two port adapter, the number of lep's are two(lep1 & lep2) for 262 * each TCP port number. 263 * 264 * Here 'lep1' is always marked as Master lep, because solisten() is always 265 * called through first lep. 266 * 267 */ 268 static struct listen_port_info * 269 add_ep_to_listenlist(struct c4iw_listen_ep *lep) 270 { 271 uint16_t port; 272 struct listen_port_info *port_info = NULL; 273 struct sockaddr_storage *laddr = &lep->com.local_addr; 274 275 port = (laddr->ss_family == AF_INET) ? 276 ((struct sockaddr_in *)laddr)->sin_port : 277 ((struct sockaddr_in6 *)laddr)->sin6_port; 278 279 mutex_lock(&listen_port_mutex); 280 281 list_for_each_entry(port_info, &listen_port_list, list) 282 if (port_info->port_num == port) 283 goto found_port; 284 285 port_info = malloc(sizeof(*port_info), M_CXGBE, M_WAITOK); 286 port_info->port_num = port; 287 port_info->refcnt = 0; 288 289 list_add_tail(&port_info->list, &listen_port_list); 290 INIT_LIST_HEAD(&port_info->lep_list); 291 292 found_port: 293 port_info->refcnt++; 294 list_add_tail(&lep->listen_ep_list, &port_info->lep_list); 295 mutex_unlock(&listen_port_mutex); 296 return port_info; 297 } 298 299 static int 300 rem_ep_from_listenlist(struct c4iw_listen_ep *lep) 301 { 302 uint16_t port; 303 struct listen_port_info *port_info = NULL; 304 struct sockaddr_storage *laddr = &lep->com.local_addr; 305 int refcnt = 0; 306 307 port = (laddr->ss_family == AF_INET) ? 308 ((struct sockaddr_in *)laddr)->sin_port : 309 ((struct sockaddr_in6 *)laddr)->sin6_port; 310 311 mutex_lock(&listen_port_mutex); 312 313 /* get the port_info structure based on the lep's port address */ 314 list_for_each_entry(port_info, &listen_port_list, list) { 315 if (port_info->port_num == port) { 316 port_info->refcnt--; 317 refcnt = port_info->refcnt; 318 /* remove the current lep from the listen list */ 319 list_del(&lep->listen_ep_list); 320 if (port_info->refcnt == 0) { 321 /* Remove this entry from the list as there 322 * are no more listeners for this port_num. 323 */ 324 list_del(&port_info->list); 325 kfree(port_info); 326 } 327 break; 328 } 329 } 330 mutex_unlock(&listen_port_mutex); 331 return refcnt; 332 } 333 334 /* 335 * Find the lep that belongs to the ifnet on which the SYN frame was received. 336 */ 337 struct c4iw_listen_ep * 338 find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so) 339 { 340 struct adapter *adap = NULL; 341 struct c4iw_listen_ep *lep = NULL; 342 struct sockaddr_storage remote = { 0 }; 343 struct ifnet *new_conn_ifp = NULL; 344 struct listen_port_info *port_info = NULL; 345 int err = 0, i = 0, 346 found_portinfo = 0, found_lep = 0; 347 uint16_t port; 348 349 /* STEP 1: get 'ifnet' based on socket's remote address */ 350 GET_REMOTE_ADDR(&remote, so); 351 352 err = get_ifnet_from_raddr(&remote, &new_conn_ifp); 353 if (err) { 354 CTR4(KTR_IW_CXGBE, "%s: Failed to get ifnet, sock %p, " 355 "master_lep %p err %d", 356 __func__, so, master_lep, err); 357 return (NULL); 358 } 359 360 /* STEP 2: Find 'port_info' with listener local port address. */ 361 port = (master_lep->com.local_addr.ss_family == AF_INET) ? 362 ((struct sockaddr_in *)&master_lep->com.local_addr)->sin_port : 363 ((struct sockaddr_in6 *)&master_lep->com.local_addr)->sin6_port; 364 365 366 mutex_lock(&listen_port_mutex); 367 list_for_each_entry(port_info, &listen_port_list, list) 368 if (port_info->port_num == port) { 369 found_portinfo =1; 370 break; 371 } 372 if (!found_portinfo) 373 goto out; 374 375 /* STEP 3: Traverse through list of lep's that are bound to the current 376 * TCP port address and find the lep that belongs to the ifnet on which 377 * the SYN frame was received. 378 */ 379 list_for_each_entry(lep, &port_info->lep_list, listen_ep_list) { 380 adap = lep->com.dev->rdev.adap; 381 for_each_port(adap, i) { 382 if (new_conn_ifp == adap->port[i]->vi[0].ifp) { 383 found_lep =1; 384 goto out; 385 } 386 } 387 } 388 out: 389 mutex_unlock(&listen_port_mutex); 390 return found_lep ? lep : (NULL); 391 } 392 393 static void process_timeout(struct c4iw_ep *ep) 394 { 395 struct c4iw_qp_attributes attrs = {0}; 396 int abort = 1; 397 398 CTR4(KTR_IW_CXGBE, "%s ep :%p, tid:%u, state %d", __func__, 399 ep, ep->hwtid, ep->com.state); 400 set_bit(TIMEDOUT, &ep->com.history); 401 switch (ep->com.state) { 402 case MPA_REQ_SENT: 403 connect_reply_upcall(ep, -ETIMEDOUT); 404 break; 405 case MPA_REQ_WAIT: 406 case MPA_REQ_RCVD: 407 case MPA_REP_SENT: 408 case FPDU_MODE: 409 break; 410 case CLOSING: 411 case MORIBUND: 412 if (ep->com.cm_id && ep->com.qp) { 413 attrs.next_state = C4IW_QP_STATE_ERROR; 414 c4iw_modify_qp(ep->com.dev, ep->com.qp, 415 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 416 } 417 close_complete_upcall(ep, -ETIMEDOUT); 418 break; 419 case ABORTING: 420 case DEAD: 421 /* 422 * These states are expected if the ep timed out at the same 423 * time as another thread was calling stop_ep_timer(). 424 * So we silently do nothing for these states. 425 */ 426 abort = 0; 427 break; 428 default: 429 CTR4(KTR_IW_CXGBE, "%s unexpected state ep %p tid %u state %u\n" 430 , __func__, ep, ep->hwtid, ep->com.state); 431 abort = 0; 432 } 433 if (abort) 434 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 435 c4iw_put_ep(&ep->com); 436 return; 437 } 438 439 struct cqe_list_entry { 440 struct list_head entry; 441 struct c4iw_dev *rhp; 442 struct t4_cqe err_cqe; 443 }; 444 445 static void 446 process_err_cqes(void) 447 { 448 unsigned long flag; 449 struct cqe_list_entry *cle; 450 451 spin_lock_irqsave(&err_cqe_lock, flag); 452 while (!list_empty(&err_cqe_list)) { 453 struct list_head *tmp; 454 tmp = err_cqe_list.next; 455 list_del(tmp); 456 tmp->next = tmp->prev = NULL; 457 spin_unlock_irqrestore(&err_cqe_lock, flag); 458 cle = list_entry(tmp, struct cqe_list_entry, entry); 459 c4iw_ev_dispatch(cle->rhp, &cle->err_cqe); 460 free(cle, M_CXGBE); 461 spin_lock_irqsave(&err_cqe_lock, flag); 462 } 463 spin_unlock_irqrestore(&err_cqe_lock, flag); 464 465 return; 466 } 467 468 static void 469 process_req(struct work_struct *ctx) 470 { 471 struct c4iw_ep_common *epc; 472 unsigned long flag; 473 int ep_events; 474 475 process_err_cqes(); 476 spin_lock_irqsave(&req_lock, flag); 477 while (!TAILQ_EMPTY(&req_list)) { 478 epc = TAILQ_FIRST(&req_list); 479 TAILQ_REMOVE(&req_list, epc, entry); 480 epc->entry.tqe_prev = NULL; 481 ep_events = epc->ep_events; 482 epc->ep_events = 0; 483 spin_unlock_irqrestore(&req_lock, flag); 484 mutex_lock(&epc->mutex); 485 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, ep_state %s events 0x%x", 486 __func__, epc->so, epc, states[epc->state], ep_events); 487 if (ep_events & C4IW_EVENT_TERM) 488 process_terminate((struct c4iw_ep *)epc); 489 if (ep_events & C4IW_EVENT_TIMEOUT) 490 process_timeout((struct c4iw_ep *)epc); 491 if (ep_events & C4IW_EVENT_SOCKET) 492 process_socket_event((struct c4iw_ep *)epc); 493 mutex_unlock(&epc->mutex); 494 c4iw_put_ep(epc); 495 process_err_cqes(); 496 spin_lock_irqsave(&req_lock, flag); 497 } 498 spin_unlock_irqrestore(&req_lock, flag); 499 } 500 501 /* 502 * XXX: doesn't belong here in the iWARP driver. 503 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is 504 * set. Is this a valid assumption for active open? 505 */ 506 static int 507 set_tcpinfo(struct c4iw_ep *ep) 508 { 509 struct socket *so = ep->com.so; 510 struct inpcb *inp = sotoinpcb(so); 511 struct tcpcb *tp; 512 struct toepcb *toep; 513 int rc = 0; 514 515 INP_WLOCK(inp); 516 tp = intotcpcb(inp); 517 if ((tp->t_flags & TF_TOE) == 0) { 518 rc = EINVAL; 519 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n", 520 __func__, so, ep); 521 goto done; 522 } 523 toep = TOEPCB(so); 524 525 ep->hwtid = toep->tid; 526 ep->snd_seq = tp->snd_nxt; 527 ep->rcv_seq = tp->rcv_nxt; 528 ep->emss = max(tp->t_maxseg, 128); 529 done: 530 INP_WUNLOCK(inp); 531 return (rc); 532 533 } 534 static int 535 get_ifnet_from_raddr(struct sockaddr_storage *raddr, struct ifnet **ifp) 536 { 537 int err = 0; 538 539 if (raddr->ss_family == AF_INET) { 540 struct sockaddr_in *raddr4 = (struct sockaddr_in *)raddr; 541 struct nhop4_extended nh4 = {0}; 542 543 err = fib4_lookup_nh_ext(RT_DEFAULT_FIB, raddr4->sin_addr, 544 NHR_REF, 0, &nh4); 545 *ifp = nh4.nh_ifp; 546 if (err) 547 fib4_free_nh_ext(RT_DEFAULT_FIB, &nh4); 548 } else { 549 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)raddr; 550 struct nhop6_extended nh6 = {0}; 551 struct in6_addr addr6; 552 uint32_t scopeid; 553 554 memset(&addr6, 0, sizeof(addr6)); 555 in6_splitscope((struct in6_addr *)&raddr6->sin6_addr, 556 &addr6, &scopeid); 557 err = fib6_lookup_nh_ext(RT_DEFAULT_FIB, &addr6, scopeid, 558 NHR_REF, 0, &nh6); 559 *ifp = nh6.nh_ifp; 560 if (err) 561 fib6_free_nh_ext(RT_DEFAULT_FIB, &nh6); 562 } 563 564 CTR2(KTR_IW_CXGBE, "%s: return: %d", __func__, err); 565 return err; 566 } 567 568 static void 569 close_socket(struct socket *so) 570 { 571 uninit_iwarp_socket(so); 572 soclose(so); 573 } 574 575 static void 576 process_peer_close(struct c4iw_ep *ep) 577 { 578 struct c4iw_qp_attributes attrs = {0}; 579 int disconnect = 1; 580 int release = 0; 581 582 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep, 583 ep->com.so, states[ep->com.state]); 584 585 switch (ep->com.state) { 586 587 case MPA_REQ_WAIT: 588 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT DEAD", 589 __func__, ep); 590 /* Fallthrough */ 591 case MPA_REQ_SENT: 592 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT DEAD", 593 __func__, ep); 594 ep->com.state = DEAD; 595 connect_reply_upcall(ep, -ECONNABORTED); 596 597 disconnect = 0; 598 STOP_EP_TIMER(ep); 599 close_socket(ep->com.so); 600 deref_cm_id(&ep->com); 601 release = 1; 602 break; 603 604 case MPA_REQ_RCVD: 605 606 /* 607 * We're gonna mark this puppy DEAD, but keep 608 * the reference on it until the ULP accepts or 609 * rejects the CR. 610 */ 611 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING", 612 __func__, ep); 613 ep->com.state = CLOSING; 614 break; 615 616 case MPA_REP_SENT: 617 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING", 618 __func__, ep); 619 ep->com.state = CLOSING; 620 break; 621 622 case FPDU_MODE: 623 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING", 624 __func__, ep); 625 START_EP_TIMER(ep); 626 ep->com.state = CLOSING; 627 attrs.next_state = C4IW_QP_STATE_CLOSING; 628 c4iw_modify_qp(ep->com.dev, ep->com.qp, 629 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 630 peer_close_upcall(ep); 631 break; 632 633 case ABORTING: 634 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)", 635 __func__, ep); 636 disconnect = 0; 637 break; 638 639 case CLOSING: 640 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND", 641 __func__, ep); 642 ep->com.state = MORIBUND; 643 disconnect = 0; 644 break; 645 646 case MORIBUND: 647 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__, 648 ep); 649 STOP_EP_TIMER(ep); 650 if (ep->com.cm_id && ep->com.qp) { 651 attrs.next_state = C4IW_QP_STATE_IDLE; 652 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 653 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 654 } 655 close_socket(ep->com.so); 656 close_complete_upcall(ep, 0); 657 ep->com.state = DEAD; 658 release = 1; 659 disconnect = 0; 660 break; 661 662 case DEAD: 663 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)", 664 __func__, ep); 665 disconnect = 0; 666 break; 667 668 default: 669 panic("%s: ep %p state %d", __func__, ep, 670 ep->com.state); 671 break; 672 } 673 674 675 if (disconnect) { 676 677 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep); 678 c4iw_ep_disconnect(ep, 0, M_NOWAIT); 679 } 680 if (release) { 681 682 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep); 683 c4iw_put_ep(&ep->com); 684 } 685 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep); 686 return; 687 } 688 689 static void 690 process_conn_error(struct c4iw_ep *ep) 691 { 692 struct c4iw_qp_attributes attrs = {0}; 693 int ret; 694 int state; 695 696 state = ep->com.state; 697 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s", 698 __func__, ep, ep->com.so, ep->com.so->so_error, 699 states[ep->com.state]); 700 701 switch (state) { 702 703 case MPA_REQ_WAIT: 704 STOP_EP_TIMER(ep); 705 c4iw_put_ep(&ep->parent_ep->com); 706 break; 707 708 case MPA_REQ_SENT: 709 STOP_EP_TIMER(ep); 710 connect_reply_upcall(ep, -ECONNRESET); 711 break; 712 713 case MPA_REP_SENT: 714 ep->com.rpl_err = ECONNRESET; 715 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep); 716 break; 717 718 case MPA_REQ_RCVD: 719 break; 720 721 case MORIBUND: 722 case CLOSING: 723 STOP_EP_TIMER(ep); 724 /*FALLTHROUGH*/ 725 case FPDU_MODE: 726 727 if (ep->com.cm_id && ep->com.qp) { 728 729 attrs.next_state = C4IW_QP_STATE_ERROR; 730 ret = c4iw_modify_qp(ep->com.qp->rhp, 731 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 732 &attrs, 1); 733 if (ret) 734 log(LOG_ERR, 735 "%s - qp <- error failed!\n", 736 __func__); 737 } 738 peer_abort_upcall(ep); 739 break; 740 741 case ABORTING: 742 break; 743 744 case DEAD: 745 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!", 746 __func__, ep->com.so->so_error); 747 return; 748 749 default: 750 panic("%s: ep %p state %d", __func__, ep, state); 751 break; 752 } 753 754 if (state != ABORTING) { 755 close_socket(ep->com.so); 756 ep->com.state = DEAD; 757 c4iw_put_ep(&ep->com); 758 } 759 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep); 760 return; 761 } 762 763 static void 764 process_close_complete(struct c4iw_ep *ep) 765 { 766 struct c4iw_qp_attributes attrs = {0}; 767 int release = 0; 768 769 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep, 770 ep->com.so, states[ep->com.state]); 771 772 /* The cm_id may be null if we failed to connect */ 773 set_bit(CLOSE_CON_RPL, &ep->com.history); 774 775 switch (ep->com.state) { 776 777 case CLOSING: 778 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND", 779 __func__, ep); 780 ep->com.state = MORIBUND; 781 break; 782 783 case MORIBUND: 784 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__, 785 ep); 786 STOP_EP_TIMER(ep); 787 788 if ((ep->com.cm_id) && (ep->com.qp)) { 789 790 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE", 791 __func__, ep); 792 attrs.next_state = C4IW_QP_STATE_IDLE; 793 c4iw_modify_qp(ep->com.dev, 794 ep->com.qp, 795 C4IW_QP_ATTR_NEXT_STATE, 796 &attrs, 1); 797 } 798 799 close_socket(ep->com.so); 800 close_complete_upcall(ep, 0); 801 ep->com.state = DEAD; 802 release = 1; 803 break; 804 805 case ABORTING: 806 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep); 807 break; 808 809 case DEAD: 810 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep); 811 break; 812 default: 813 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p unknown ep state", 814 __func__, ep); 815 panic("%s:pcc6 %p unknown ep state", __func__, ep); 816 break; 817 } 818 819 if (release) { 820 821 CTR2(KTR_IW_CXGBE, "%s:pcc8 %p", __func__, ep); 822 release_ep_resources(ep); 823 } 824 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep); 825 return; 826 } 827 828 static void 829 setiwsockopt(struct socket *so) 830 { 831 int rc; 832 struct sockopt sopt; 833 int on = 1; 834 835 sopt.sopt_dir = SOPT_SET; 836 sopt.sopt_level = IPPROTO_TCP; 837 sopt.sopt_name = TCP_NODELAY; 838 sopt.sopt_val = (caddr_t)&on; 839 sopt.sopt_valsize = sizeof on; 840 sopt.sopt_td = NULL; 841 rc = sosetopt(so, &sopt); 842 if (rc) { 843 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n", 844 __func__, so, rc); 845 } 846 } 847 848 static void 849 init_iwarp_socket(struct socket *so, void *arg) 850 { 851 if (SOLISTENING(so)) { 852 SOLISTEN_LOCK(so); 853 solisten_upcall_set(so, c4iw_so_upcall, arg); 854 so->so_state |= SS_NBIO; 855 SOLISTEN_UNLOCK(so); 856 } else { 857 SOCKBUF_LOCK(&so->so_rcv); 858 soupcall_set(so, SO_RCV, c4iw_so_upcall, arg); 859 so->so_state |= SS_NBIO; 860 SOCKBUF_UNLOCK(&so->so_rcv); 861 } 862 } 863 864 static void 865 uninit_iwarp_socket(struct socket *so) 866 { 867 if (SOLISTENING(so)) { 868 SOLISTEN_LOCK(so); 869 solisten_upcall_set(so, NULL, NULL); 870 SOLISTEN_UNLOCK(so); 871 } else { 872 SOCKBUF_LOCK(&so->so_rcv); 873 soupcall_clear(so, SO_RCV); 874 SOCKBUF_UNLOCK(&so->so_rcv); 875 } 876 } 877 878 static void 879 process_data(struct c4iw_ep *ep) 880 { 881 int disconnect = 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 default: 897 if (sbused(&ep->com.so->so_rcv)) 898 log(LOG_ERR, "%s: Unexpected streaming data. ep %p, " 899 "state %d, so %p, so_state 0x%x, sbused %u\n", 900 __func__, ep, ep->com.state, ep->com.so, 901 ep->com.so->so_state, sbused(&ep->com.so->so_rcv)); 902 break; 903 } 904 if (disconnect) 905 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); 906 907 } 908 909 static void 910 process_connected(struct c4iw_ep *ep) 911 { 912 struct socket *so = ep->com.so; 913 914 if ((so->so_state & SS_ISCONNECTED) && !so->so_error) { 915 if (send_mpa_req(ep)) 916 goto err; 917 } else { 918 connect_reply_upcall(ep, -so->so_error); 919 goto err; 920 } 921 return; 922 err: 923 close_socket(so); 924 ep->com.state = DEAD; 925 c4iw_put_ep(&ep->com); 926 return; 927 } 928 929 static inline int c4iw_zero_addr(struct sockaddr *addr) 930 { 931 struct in6_addr *ip6; 932 933 if (addr->sa_family == AF_INET) 934 return IN_ZERONET( 935 ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr)); 936 else { 937 ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; 938 return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | 939 ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; 940 } 941 } 942 943 static inline int c4iw_loopback_addr(struct sockaddr *addr) 944 { 945 if (addr->sa_family == AF_INET) 946 return IN_LOOPBACK( 947 ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 948 else 949 return IN6_IS_ADDR_LOOPBACK( 950 &((struct sockaddr_in6 *) addr)->sin6_addr); 951 } 952 953 static inline int c4iw_any_addr(struct sockaddr *addr) 954 { 955 return c4iw_zero_addr(addr) || c4iw_loopback_addr(addr); 956 } 957 958 static void 959 process_newconn(struct c4iw_listen_ep *master_lep, struct socket *new_so) 960 { 961 struct c4iw_listen_ep *real_lep = NULL; 962 struct c4iw_ep *new_ep = NULL; 963 struct sockaddr_in *remote = NULL; 964 int ret = 0; 965 966 MPASS(new_so != NULL); 967 968 if (c4iw_any_addr((struct sockaddr *)&master_lep->com.local_addr)) { 969 /* Here we need to find the 'real_lep' that belongs to the 970 * incomming socket's network interface, such that the newly 971 * created 'ep' can be attached to the real 'lep'. 972 */ 973 real_lep = find_real_listen_ep(master_lep, new_so); 974 if (real_lep == NULL) { 975 CTR2(KTR_IW_CXGBE, "%s: Could not find the real listen " 976 "ep for sock: %p", __func__, new_so); 977 log(LOG_ERR,"%s: Could not find the real listen ep for " 978 "sock: %p\n", __func__, new_so); 979 /* FIXME: properly free the 'new_so' in failure case. 980 * Use of soabort() and soclose() are not legal 981 * here(before soaccept()). 982 */ 983 return; 984 } 985 } else /* for Non-Wildcard address, master_lep is always the real_lep */ 986 real_lep = master_lep; 987 988 new_ep = alloc_ep(sizeof(*new_ep), GFP_KERNEL); 989 990 CTR6(KTR_IW_CXGBE, "%s: master_lep %p, real_lep: %p, new ep %p, " 991 "listening so %p, new so %p", __func__, master_lep, real_lep, 992 new_ep, master_lep->com.so, new_so); 993 994 new_ep->com.dev = real_lep->com.dev; 995 new_ep->com.so = new_so; 996 new_ep->com.cm_id = NULL; 997 new_ep->com.thread = real_lep->com.thread; 998 new_ep->parent_ep = real_lep; 999 1000 GET_LOCAL_ADDR(&new_ep->com.local_addr, new_so); 1001 GET_REMOTE_ADDR(&new_ep->com.remote_addr, new_so); 1002 c4iw_get_ep(&real_lep->com); 1003 init_timer(&new_ep->timer); 1004 new_ep->com.state = MPA_REQ_WAIT; 1005 START_EP_TIMER(new_ep); 1006 1007 setiwsockopt(new_so); 1008 ret = soaccept(new_so, (struct sockaddr **)&remote); 1009 if (ret != 0) { 1010 CTR4(KTR_IW_CXGBE, 1011 "%s:listen sock:%p, new sock:%p, ret:%d\n", 1012 __func__, master_lep->com.so, new_so, ret); 1013 if (remote != NULL) 1014 free(remote, M_SONAME); 1015 uninit_iwarp_socket(new_so); 1016 soclose(new_so); 1017 c4iw_put_ep(&new_ep->com); 1018 c4iw_put_ep(&real_lep->com); 1019 return; 1020 } 1021 free(remote, M_SONAME); 1022 1023 /* MPA request might have been queued up on the socket already, so we 1024 * initialize the socket/upcall_handler under lock to prevent processing 1025 * MPA request on another thread(via process_req()) simultaniously. 1026 */ 1027 c4iw_get_ep(&new_ep->com); /* Dereferenced at the end below, this is to 1028 avoid freeing of ep before ep unlock. */ 1029 mutex_lock(&new_ep->com.mutex); 1030 init_iwarp_socket(new_so, &new_ep->com); 1031 1032 ret = process_mpa_request(new_ep); 1033 if (ret) { 1034 /* ABORT */ 1035 c4iw_ep_disconnect(new_ep, 1, GFP_KERNEL); 1036 c4iw_put_ep(&real_lep->com); 1037 } 1038 mutex_unlock(&new_ep->com.mutex); 1039 c4iw_put_ep(&new_ep->com); 1040 return; 1041 } 1042 1043 static int 1044 add_ep_to_req_list(struct c4iw_ep *ep, int new_ep_event) 1045 { 1046 unsigned long flag; 1047 1048 spin_lock_irqsave(&req_lock, flag); 1049 if (ep && ep->com.so) { 1050 ep->com.ep_events |= new_ep_event; 1051 if (!ep->com.entry.tqe_prev) { 1052 c4iw_get_ep(&ep->com); 1053 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry); 1054 queue_work(c4iw_taskq, &c4iw_task); 1055 } 1056 } 1057 spin_unlock_irqrestore(&req_lock, flag); 1058 1059 return (0); 1060 } 1061 1062 static int 1063 c4iw_so_upcall(struct socket *so, void *arg, int waitflag) 1064 { 1065 struct c4iw_ep *ep = arg; 1066 1067 CTR6(KTR_IW_CXGBE, 1068 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p", 1069 __func__, so, so->so_state, ep, states[ep->com.state], 1070 ep->com.entry.tqe_prev); 1071 1072 MPASS(ep->com.so == so); 1073 /* 1074 * Wake up any threads waiting in rdma_init()/rdma_fini(), 1075 * with locks held. 1076 */ 1077 if (so->so_error) 1078 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 1079 add_ep_to_req_list(ep, C4IW_EVENT_SOCKET); 1080 1081 return (SU_OK); 1082 } 1083 1084 1085 static int 1086 terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) 1087 { 1088 struct adapter *sc = iq->adapter; 1089 const struct cpl_rdma_terminate *cpl = mtod(m, const void *); 1090 unsigned int tid = GET_TID(cpl); 1091 struct toepcb *toep = lookup_tid(sc, tid); 1092 struct socket *so; 1093 struct c4iw_ep *ep; 1094 1095 INP_WLOCK(toep->inp); 1096 so = inp_inpcbtosocket(toep->inp); 1097 ep = so->so_rcv.sb_upcallarg; 1098 INP_WUNLOCK(toep->inp); 1099 1100 CTR3(KTR_IW_CXGBE, "%s: so %p, ep %p", __func__, so, ep); 1101 add_ep_to_req_list(ep, C4IW_EVENT_TERM); 1102 1103 return 0; 1104 } 1105 1106 static void 1107 process_socket_event(struct c4iw_ep *ep) 1108 { 1109 int state = ep->com.state; 1110 struct socket *so = ep->com.so; 1111 1112 if (ep->com.state == DEAD) { 1113 CTR3(KTR_IW_CXGBE, "%s: Pending socket event discarded " 1114 "ep %p ep_state %s", __func__, ep, states[state]); 1115 return; 1116 } 1117 1118 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, " 1119 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state, 1120 so->so_error, so->so_rcv.sb_state, ep, states[state]); 1121 1122 if (state == CONNECTING) { 1123 process_connected(ep); 1124 return; 1125 } 1126 1127 if (state == LISTEN) { 1128 struct c4iw_listen_ep *lep = (struct c4iw_listen_ep *)ep; 1129 struct socket *listen_so = so, *new_so = NULL; 1130 int error = 0; 1131 1132 SOLISTEN_LOCK(listen_so); 1133 do { 1134 error = solisten_dequeue(listen_so, &new_so, 1135 SOCK_NONBLOCK); 1136 if (error) { 1137 CTR4(KTR_IW_CXGBE, "%s: lep %p listen_so %p " 1138 "error %d", __func__, lep, listen_so, 1139 error); 1140 return; 1141 } 1142 process_newconn(lep, new_so); 1143 1144 /* solisten_dequeue() unlocks while return, so aquire 1145 * lock again for sol_qlen and also for next iteration. 1146 */ 1147 SOLISTEN_LOCK(listen_so); 1148 } while (listen_so->sol_qlen); 1149 SOLISTEN_UNLOCK(listen_so); 1150 1151 return; 1152 } 1153 1154 /* connection error */ 1155 if (so->so_error) { 1156 process_conn_error(ep); 1157 return; 1158 } 1159 1160 /* peer close */ 1161 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state <= CLOSING) { 1162 process_peer_close(ep); 1163 /* 1164 * check whether socket disconnect event is pending before 1165 * returning. Fallthrough if yes. 1166 */ 1167 if (!(so->so_state & SS_ISDISCONNECTED)) 1168 return; 1169 } 1170 1171 /* close complete */ 1172 if (so->so_state & SS_ISDISCONNECTED) { 1173 process_close_complete(ep); 1174 return; 1175 } 1176 1177 /* rx data */ 1178 process_data(ep); 1179 } 1180 1181 SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD, 0, "iw_cxgbe driver parameters"); 1182 1183 static int dack_mode = 0; 1184 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RWTUN, &dack_mode, 0, 1185 "Delayed ack mode (default = 0)"); 1186 1187 int c4iw_max_read_depth = 8; 1188 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RWTUN, &c4iw_max_read_depth, 0, 1189 "Per-connection max ORD/IRD (default = 8)"); 1190 1191 static int enable_tcp_timestamps; 1192 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RWTUN, &enable_tcp_timestamps, 0, 1193 "Enable tcp timestamps (default = 0)"); 1194 1195 static int enable_tcp_sack; 1196 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RWTUN, &enable_tcp_sack, 0, 1197 "Enable tcp SACK (default = 0)"); 1198 1199 static int enable_tcp_window_scaling = 1; 1200 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RWTUN, &enable_tcp_window_scaling, 0, 1201 "Enable tcp window scaling (default = 1)"); 1202 1203 int c4iw_debug = 0; 1204 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RWTUN, &c4iw_debug, 0, 1205 "Enable debug logging (default = 0)"); 1206 1207 static int peer2peer = 1; 1208 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RWTUN, &peer2peer, 0, 1209 "Support peer2peer ULPs (default = 1)"); 1210 1211 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 1212 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RWTUN, &p2p_type, 0, 1213 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)"); 1214 1215 static int ep_timeout_secs = 60; 1216 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RWTUN, &ep_timeout_secs, 0, 1217 "CM Endpoint operation timeout in seconds (default = 60)"); 1218 1219 static int mpa_rev = 1; 1220 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RWTUN, &mpa_rev, 0, 1221 "MPA Revision, 0 supports amso1100, 1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)"); 1222 1223 static int markers_enabled; 1224 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RWTUN, &markers_enabled, 0, 1225 "Enable MPA MARKERS (default(0) = disabled)"); 1226 1227 static int crc_enabled = 1; 1228 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RWTUN, &crc_enabled, 0, 1229 "Enable MPA CRC (default(1) = enabled)"); 1230 1231 static int rcv_win = 256 * 1024; 1232 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RWTUN, &rcv_win, 0, 1233 "TCP receive window in bytes (default = 256KB)"); 1234 1235 static int snd_win = 128 * 1024; 1236 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RWTUN, &snd_win, 0, 1237 "TCP send window in bytes (default = 128KB)"); 1238 1239 static void 1240 start_ep_timer(struct c4iw_ep *ep) 1241 { 1242 1243 if (timer_pending(&ep->timer)) { 1244 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep); 1245 printk(KERN_ERR "%s timer already started! ep %p\n", __func__, 1246 ep); 1247 return; 1248 } 1249 clear_bit(TIMEOUT, &ep->com.flags); 1250 c4iw_get_ep(&ep->com); 1251 ep->timer.expires = jiffies + ep_timeout_secs * HZ; 1252 ep->timer.data = (unsigned long)ep; 1253 ep->timer.function = ep_timeout; 1254 add_timer(&ep->timer); 1255 } 1256 1257 static int 1258 stop_ep_timer(struct c4iw_ep *ep) 1259 { 1260 1261 del_timer_sync(&ep->timer); 1262 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 1263 c4iw_put_ep(&ep->com); 1264 return 0; 1265 } 1266 return 1; 1267 } 1268 1269 static void * 1270 alloc_ep(int size, gfp_t gfp) 1271 { 1272 struct c4iw_ep_common *epc; 1273 1274 epc = kzalloc(size, gfp); 1275 if (epc == NULL) 1276 return (NULL); 1277 1278 kref_init(&epc->kref); 1279 mutex_init(&epc->mutex); 1280 c4iw_init_wr_wait(&epc->wr_wait); 1281 1282 return (epc); 1283 } 1284 1285 void _c4iw_free_ep(struct kref *kref) 1286 { 1287 struct c4iw_ep *ep; 1288 struct c4iw_ep_common *epc; 1289 1290 ep = container_of(kref, struct c4iw_ep, com.kref); 1291 epc = &ep->com; 1292 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list", 1293 __func__, epc)); 1294 if (test_bit(QP_REFERENCED, &ep->com.flags)) 1295 deref_qp(ep); 1296 CTR4(KTR_IW_CXGBE, "%s: ep %p, history 0x%lx, flags 0x%lx", 1297 __func__, ep, epc->history, epc->flags); 1298 kfree(ep); 1299 } 1300 1301 static void release_ep_resources(struct c4iw_ep *ep) 1302 { 1303 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep); 1304 set_bit(RELEASE_RESOURCES, &ep->com.flags); 1305 c4iw_put_ep(&ep->com); 1306 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep); 1307 } 1308 1309 static int 1310 send_mpa_req(struct c4iw_ep *ep) 1311 { 1312 int mpalen; 1313 struct mpa_message *mpa; 1314 struct mpa_v2_conn_params mpa_v2_params; 1315 struct mbuf *m; 1316 char mpa_rev_to_use = mpa_rev; 1317 int err = 0; 1318 1319 if (ep->retry_with_mpa_v1) 1320 mpa_rev_to_use = 1; 1321 mpalen = sizeof(*mpa) + ep->plen; 1322 if (mpa_rev_to_use == 2) 1323 mpalen += sizeof(struct mpa_v2_conn_params); 1324 1325 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1326 if (mpa == NULL) { 1327 err = -ENOMEM; 1328 CTR3(KTR_IW_CXGBE, "%s:smr1 ep: %p , error: %d", 1329 __func__, ep, err); 1330 goto err; 1331 } 1332 1333 memset(mpa, 0, mpalen); 1334 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 1335 mpa->flags = (crc_enabled ? MPA_CRC : 0) | 1336 (markers_enabled ? MPA_MARKERS : 0) | 1337 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); 1338 mpa->private_data_size = htons(ep->plen); 1339 mpa->revision = mpa_rev_to_use; 1340 1341 if (mpa_rev_to_use == 1) { 1342 ep->tried_with_mpa_v1 = 1; 1343 ep->retry_with_mpa_v1 = 0; 1344 } 1345 1346 if (mpa_rev_to_use == 2) { 1347 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1348 sizeof(struct mpa_v2_conn_params)); 1349 mpa_v2_params.ird = htons((u16)ep->ird); 1350 mpa_v2_params.ord = htons((u16)ep->ord); 1351 1352 if (peer2peer) { 1353 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1354 1355 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1356 mpa_v2_params.ord |= 1357 htons(MPA_V2_RDMA_WRITE_RTR); 1358 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1359 mpa_v2_params.ord |= 1360 htons(MPA_V2_RDMA_READ_RTR); 1361 } 1362 } 1363 memcpy(mpa->private_data, &mpa_v2_params, 1364 sizeof(struct mpa_v2_conn_params)); 1365 1366 if (ep->plen) { 1367 1368 memcpy(mpa->private_data + 1369 sizeof(struct mpa_v2_conn_params), 1370 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1371 } 1372 } else { 1373 1374 if (ep->plen) 1375 memcpy(mpa->private_data, 1376 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1377 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep); 1378 } 1379 1380 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1381 if (m == NULL) { 1382 err = -ENOMEM; 1383 CTR3(KTR_IW_CXGBE, "%s:smr2 ep: %p , error: %d", 1384 __func__, ep, err); 1385 free(mpa, M_CXGBE); 1386 goto err; 1387 } 1388 m_copyback(m, 0, mpalen, (void *)mpa); 1389 free(mpa, M_CXGBE); 1390 1391 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1392 ep->com.thread); 1393 if (err) { 1394 CTR3(KTR_IW_CXGBE, "%s:smr3 ep: %p , error: %d", 1395 __func__, ep, err); 1396 goto err; 1397 } 1398 1399 START_EP_TIMER(ep); 1400 ep->com.state = MPA_REQ_SENT; 1401 ep->mpa_attr.initiator = 1; 1402 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1403 return 0; 1404 err: 1405 connect_reply_upcall(ep, err); 1406 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1407 return err; 1408 } 1409 1410 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 1411 { 1412 int mpalen ; 1413 struct mpa_message *mpa; 1414 struct mpa_v2_conn_params mpa_v2_params; 1415 struct mbuf *m; 1416 int err; 1417 1418 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid, 1419 ep->plen); 1420 1421 mpalen = sizeof(*mpa) + plen; 1422 1423 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1424 1425 mpalen += sizeof(struct mpa_v2_conn_params); 1426 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep, 1427 ep->mpa_attr.version, mpalen); 1428 } 1429 1430 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1431 if (mpa == NULL) 1432 return (-ENOMEM); 1433 1434 memset(mpa, 0, mpalen); 1435 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1436 mpa->flags = MPA_REJECT; 1437 mpa->revision = mpa_rev; 1438 mpa->private_data_size = htons(plen); 1439 1440 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1441 1442 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1443 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1444 sizeof(struct mpa_v2_conn_params)); 1445 mpa_v2_params.ird = htons(((u16)ep->ird) | 1446 (peer2peer ? MPA_V2_PEER2PEER_MODEL : 1447 0)); 1448 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 1449 (p2p_type == 1450 FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 1451 MPA_V2_RDMA_WRITE_RTR : p2p_type == 1452 FW_RI_INIT_P2PTYPE_READ_REQ ? 1453 MPA_V2_RDMA_READ_RTR : 0) : 0)); 1454 memcpy(mpa->private_data, &mpa_v2_params, 1455 sizeof(struct mpa_v2_conn_params)); 1456 1457 if (ep->plen) 1458 memcpy(mpa->private_data + 1459 sizeof(struct mpa_v2_conn_params), pdata, plen); 1460 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep, 1461 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen); 1462 } else 1463 if (plen) 1464 memcpy(mpa->private_data, pdata, plen); 1465 1466 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1467 if (m == NULL) { 1468 free(mpa, M_CXGBE); 1469 return (-ENOMEM); 1470 } 1471 m_copyback(m, 0, mpalen, (void *)mpa); 1472 free(mpa, M_CXGBE); 1473 1474 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread); 1475 if (!err) 1476 ep->snd_seq += mpalen; 1477 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err); 1478 return err; 1479 } 1480 1481 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 1482 { 1483 int mpalen; 1484 struct mpa_message *mpa; 1485 struct mbuf *m; 1486 struct mpa_v2_conn_params mpa_v2_params; 1487 int err; 1488 1489 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep); 1490 1491 mpalen = sizeof(*mpa) + plen; 1492 1493 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1494 1495 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep, 1496 ep->mpa_attr.version); 1497 mpalen += sizeof(struct mpa_v2_conn_params); 1498 } 1499 1500 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1501 if (mpa == NULL) 1502 return (-ENOMEM); 1503 1504 memset(mpa, 0, sizeof(*mpa)); 1505 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1506 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 1507 (markers_enabled ? MPA_MARKERS : 0); 1508 mpa->revision = ep->mpa_attr.version; 1509 mpa->private_data_size = htons(plen); 1510 1511 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1512 1513 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1514 mpa->private_data_size += 1515 htons(sizeof(struct mpa_v2_conn_params)); 1516 mpa_v2_params.ird = htons((u16)ep->ird); 1517 mpa_v2_params.ord = htons((u16)ep->ord); 1518 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep, 1519 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord); 1520 1521 if (peer2peer && (ep->mpa_attr.p2p_type != 1522 FW_RI_INIT_P2PTYPE_DISABLED)) { 1523 1524 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1525 1526 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1527 1528 mpa_v2_params.ord |= 1529 htons(MPA_V2_RDMA_WRITE_RTR); 1530 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d", 1531 __func__, ep, p2p_type, mpa_v2_params.ird, 1532 mpa_v2_params.ord); 1533 } 1534 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1535 1536 mpa_v2_params.ord |= 1537 htons(MPA_V2_RDMA_READ_RTR); 1538 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d", 1539 __func__, ep, p2p_type, mpa_v2_params.ird, 1540 mpa_v2_params.ord); 1541 } 1542 } 1543 1544 memcpy(mpa->private_data, &mpa_v2_params, 1545 sizeof(struct mpa_v2_conn_params)); 1546 1547 if (ep->plen) 1548 memcpy(mpa->private_data + 1549 sizeof(struct mpa_v2_conn_params), pdata, plen); 1550 } else 1551 if (plen) 1552 memcpy(mpa->private_data, pdata, plen); 1553 1554 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1555 if (m == NULL) { 1556 free(mpa, M_CXGBE); 1557 return (-ENOMEM); 1558 } 1559 m_copyback(m, 0, mpalen, (void *)mpa); 1560 free(mpa, M_CXGBE); 1561 1562 1563 ep->com.state = MPA_REP_SENT; 1564 ep->snd_seq += mpalen; 1565 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1566 ep->com.thread); 1567 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err); 1568 return err; 1569 } 1570 1571 1572 1573 static void close_complete_upcall(struct c4iw_ep *ep, int status) 1574 { 1575 struct iw_cm_event event; 1576 1577 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep); 1578 memset(&event, 0, sizeof(event)); 1579 event.event = IW_CM_EVENT_CLOSE; 1580 event.status = status; 1581 1582 if (ep->com.cm_id) { 1583 1584 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep); 1585 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1586 deref_cm_id(&ep->com); 1587 set_bit(CLOSE_UPCALL, &ep->com.history); 1588 } 1589 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep); 1590 } 1591 1592 static int 1593 send_abort(struct c4iw_ep *ep) 1594 { 1595 struct socket *so = ep->com.so; 1596 struct sockopt sopt; 1597 int rc; 1598 struct linger l; 1599 1600 CTR5(KTR_IW_CXGBE, "%s ep %p so %p state %s tid %d", __func__, ep, so, 1601 states[ep->com.state], ep->hwtid); 1602 1603 l.l_onoff = 1; 1604 l.l_linger = 0; 1605 1606 /* linger_time of 0 forces RST to be sent */ 1607 sopt.sopt_dir = SOPT_SET; 1608 sopt.sopt_level = SOL_SOCKET; 1609 sopt.sopt_name = SO_LINGER; 1610 sopt.sopt_val = (caddr_t)&l; 1611 sopt.sopt_valsize = sizeof l; 1612 sopt.sopt_td = NULL; 1613 rc = sosetopt(so, &sopt); 1614 if (rc != 0) { 1615 log(LOG_ERR, "%s: sosetopt(%p, linger = 0) failed with %d.\n", 1616 __func__, so, rc); 1617 } 1618 1619 uninit_iwarp_socket(so); 1620 soclose(so); 1621 set_bit(ABORT_CONN, &ep->com.history); 1622 1623 /* 1624 * TBD: iw_cxgbe driver should receive ABORT reply for every ABORT 1625 * request it has sent. But the current TOE driver is not propagating 1626 * this ABORT reply event (via do_abort_rpl) to iw_cxgbe. So as a work- 1627 * around de-refererece 'ep' here instead of doing it in abort_rpl() 1628 * handler(not yet implemented) of iw_cxgbe driver. 1629 */ 1630 release_ep_resources(ep); 1631 1632 return (0); 1633 } 1634 1635 static void peer_close_upcall(struct c4iw_ep *ep) 1636 { 1637 struct iw_cm_event event; 1638 1639 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep); 1640 memset(&event, 0, sizeof(event)); 1641 event.event = IW_CM_EVENT_DISCONNECT; 1642 1643 if (ep->com.cm_id) { 1644 1645 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep); 1646 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1647 set_bit(DISCONN_UPCALL, &ep->com.history); 1648 } 1649 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep); 1650 } 1651 1652 static void peer_abort_upcall(struct c4iw_ep *ep) 1653 { 1654 struct iw_cm_event event; 1655 1656 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep); 1657 memset(&event, 0, sizeof(event)); 1658 event.event = IW_CM_EVENT_CLOSE; 1659 event.status = -ECONNRESET; 1660 1661 if (ep->com.cm_id) { 1662 1663 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep); 1664 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1665 deref_cm_id(&ep->com); 1666 set_bit(ABORT_UPCALL, &ep->com.history); 1667 } 1668 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep); 1669 } 1670 1671 static void connect_reply_upcall(struct c4iw_ep *ep, int status) 1672 { 1673 struct iw_cm_event event; 1674 1675 CTR3(KTR_IW_CXGBE, "%s:cruB %p, status: %d", __func__, ep, status); 1676 memset(&event, 0, sizeof(event)); 1677 event.event = IW_CM_EVENT_CONNECT_REPLY; 1678 event.status = ((status == -ECONNABORTED) || (status == -EPIPE)) ? 1679 -ECONNRESET : status; 1680 event.local_addr = ep->com.local_addr; 1681 event.remote_addr = ep->com.remote_addr; 1682 1683 if ((status == 0) || (status == -ECONNREFUSED)) { 1684 1685 if (!ep->tried_with_mpa_v1) { 1686 1687 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep); 1688 /* this means MPA_v2 is used */ 1689 event.ord = ep->ird; 1690 event.ird = ep->ord; 1691 event.private_data_len = ep->plen - 1692 sizeof(struct mpa_v2_conn_params); 1693 event.private_data = ep->mpa_pkt + 1694 sizeof(struct mpa_message) + 1695 sizeof(struct mpa_v2_conn_params); 1696 } else { 1697 1698 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep); 1699 /* this means MPA_v1 is used */ 1700 event.ord = c4iw_max_read_depth; 1701 event.ird = c4iw_max_read_depth; 1702 event.private_data_len = ep->plen; 1703 event.private_data = ep->mpa_pkt + 1704 sizeof(struct mpa_message); 1705 } 1706 } 1707 1708 if (ep->com.cm_id) { 1709 1710 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep); 1711 set_bit(CONN_RPL_UPCALL, &ep->com.history); 1712 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1713 } 1714 1715 if(status == -ECONNABORTED) { 1716 1717 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status); 1718 return; 1719 } 1720 1721 if (status < 0) { 1722 1723 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status); 1724 deref_cm_id(&ep->com); 1725 } 1726 1727 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep); 1728 } 1729 1730 static int connect_request_upcall(struct c4iw_ep *ep) 1731 { 1732 struct iw_cm_event event; 1733 int ret; 1734 1735 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep, 1736 ep->tried_with_mpa_v1); 1737 1738 memset(&event, 0, sizeof(event)); 1739 event.event = IW_CM_EVENT_CONNECT_REQUEST; 1740 event.local_addr = ep->com.local_addr; 1741 event.remote_addr = ep->com.remote_addr; 1742 event.provider_data = ep; 1743 1744 if (!ep->tried_with_mpa_v1) { 1745 /* this means MPA_v2 is used */ 1746 event.ord = ep->ord; 1747 event.ird = ep->ird; 1748 event.private_data_len = ep->plen - 1749 sizeof(struct mpa_v2_conn_params); 1750 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 1751 sizeof(struct mpa_v2_conn_params); 1752 } else { 1753 1754 /* this means MPA_v1 is used. Send max supported */ 1755 event.ord = c4iw_max_read_depth; 1756 event.ird = c4iw_max_read_depth; 1757 event.private_data_len = ep->plen; 1758 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 1759 } 1760 1761 c4iw_get_ep(&ep->com); 1762 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, 1763 &event); 1764 if(ret) { 1765 CTR3(KTR_IW_CXGBE, "%s: ep %p, Failure while notifying event to" 1766 " IWCM, err:%d", __func__, ep, ret); 1767 c4iw_put_ep(&ep->com); 1768 } else 1769 /* Dereference parent_ep only in success case. 1770 * In case of failure, parent_ep is dereferenced by the caller 1771 * of process_mpa_request(). 1772 */ 1773 c4iw_put_ep(&ep->parent_ep->com); 1774 1775 set_bit(CONNREQ_UPCALL, &ep->com.history); 1776 return ret; 1777 } 1778 1779 static void established_upcall(struct c4iw_ep *ep) 1780 { 1781 struct iw_cm_event event; 1782 1783 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep); 1784 memset(&event, 0, sizeof(event)); 1785 event.event = IW_CM_EVENT_ESTABLISHED; 1786 event.ird = ep->ord; 1787 event.ord = ep->ird; 1788 1789 if (ep->com.cm_id) { 1790 1791 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep); 1792 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1793 set_bit(ESTAB_UPCALL, &ep->com.history); 1794 } 1795 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep); 1796 } 1797 1798 1799 #define RELAXED_IRD_NEGOTIATION 1 1800 1801 /* 1802 * process_mpa_reply - process streaming mode MPA reply 1803 * 1804 * Returns: 1805 * 1806 * 0 upon success indicating a connect request was delivered to the ULP 1807 * or the mpa request is incomplete but valid so far. 1808 * 1809 * 1 if a failure requires the caller to close the connection. 1810 * 1811 * 2 if a failure requires the caller to abort the connection. 1812 */ 1813 static int process_mpa_reply(struct c4iw_ep *ep) 1814 { 1815 struct mpa_message *mpa; 1816 struct mpa_v2_conn_params *mpa_v2_params; 1817 u16 plen; 1818 u16 resp_ird, resp_ord; 1819 u8 rtr_mismatch = 0, insuff_ird = 0; 1820 struct c4iw_qp_attributes attrs = {0}; 1821 enum c4iw_qp_attr_mask mask; 1822 int err; 1823 struct mbuf *top, *m; 1824 int flags = MSG_DONTWAIT; 1825 struct uio uio; 1826 int disconnect = 0; 1827 1828 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep); 1829 1830 /* 1831 * Stop mpa timer. If it expired, then 1832 * we ignore the MPA reply. process_timeout() 1833 * will abort the connection. 1834 */ 1835 if (STOP_EP_TIMER(ep)) 1836 return 0; 1837 1838 uio.uio_resid = 1000000; 1839 uio.uio_td = ep->com.thread; 1840 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags); 1841 1842 if (err) { 1843 1844 if (err == EWOULDBLOCK) { 1845 1846 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep); 1847 START_EP_TIMER(ep); 1848 return 0; 1849 } 1850 err = -err; 1851 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep); 1852 goto err; 1853 } 1854 1855 if (ep->com.so->so_rcv.sb_mb) { 1856 1857 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep); 1858 printf("%s data after soreceive called! so %p sb_mb %p top %p\n", 1859 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top); 1860 } 1861 1862 m = top; 1863 1864 do { 1865 1866 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep); 1867 /* 1868 * If we get more than the supported amount of private data 1869 * then we must fail this connection. 1870 */ 1871 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) { 1872 1873 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep, 1874 ep->mpa_pkt_len + m->m_len); 1875 err = (-EINVAL); 1876 goto err_stop_timer; 1877 } 1878 1879 /* 1880 * copy the new data into our accumulation buffer. 1881 */ 1882 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len])); 1883 ep->mpa_pkt_len += m->m_len; 1884 if (!m->m_next) 1885 m = m->m_nextpkt; 1886 else 1887 m = m->m_next; 1888 } while (m); 1889 1890 m_freem(top); 1891 /* 1892 * if we don't even have the mpa message, then bail. 1893 */ 1894 if (ep->mpa_pkt_len < sizeof(*mpa)) { 1895 return 0; 1896 } 1897 mpa = (struct mpa_message *) ep->mpa_pkt; 1898 1899 /* Validate MPA header. */ 1900 if (mpa->revision > mpa_rev) { 1901 1902 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep, 1903 mpa->revision, mpa_rev); 1904 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, " 1905 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1906 err = -EPROTO; 1907 goto err_stop_timer; 1908 } 1909 1910 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1911 1912 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep); 1913 err = -EPROTO; 1914 goto err_stop_timer; 1915 } 1916 1917 plen = ntohs(mpa->private_data_size); 1918 1919 /* 1920 * Fail if there's too much private data. 1921 */ 1922 if (plen > MPA_MAX_PRIVATE_DATA) { 1923 1924 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep); 1925 err = -EPROTO; 1926 goto err_stop_timer; 1927 } 1928 1929 /* 1930 * If plen does not account for pkt size 1931 */ 1932 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1933 1934 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep); 1935 STOP_EP_TIMER(ep); 1936 err = -EPROTO; 1937 goto err_stop_timer; 1938 } 1939 1940 ep->plen = (u8) plen; 1941 1942 /* 1943 * If we don't have all the pdata yet, then bail. 1944 * We'll continue process when more data arrives. 1945 */ 1946 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) { 1947 1948 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep); 1949 return 0; 1950 } 1951 1952 if (mpa->flags & MPA_REJECT) { 1953 1954 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep); 1955 err = -ECONNREFUSED; 1956 goto err_stop_timer; 1957 } 1958 1959 /* 1960 * If we get here we have accumulated the entire mpa 1961 * start reply message including private data. And 1962 * the MPA header is valid. 1963 */ 1964 ep->com.state = FPDU_MODE; 1965 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 1966 ep->mpa_attr.recv_marker_enabled = markers_enabled; 1967 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 1968 ep->mpa_attr.version = mpa->revision; 1969 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1970 1971 if (mpa->revision == 2) { 1972 1973 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep); 1974 ep->mpa_attr.enhanced_rdma_conn = 1975 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 1976 1977 if (ep->mpa_attr.enhanced_rdma_conn) { 1978 1979 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep); 1980 mpa_v2_params = (struct mpa_v2_conn_params *) 1981 (ep->mpa_pkt + sizeof(*mpa)); 1982 resp_ird = ntohs(mpa_v2_params->ird) & 1983 MPA_V2_IRD_ORD_MASK; 1984 resp_ord = ntohs(mpa_v2_params->ord) & 1985 MPA_V2_IRD_ORD_MASK; 1986 1987 /* 1988 * This is a double-check. Ideally, below checks are 1989 * not required since ird/ord stuff has been taken 1990 * care of in c4iw_accept_cr 1991 */ 1992 if (ep->ird < resp_ord) { 1993 if (RELAXED_IRD_NEGOTIATION && resp_ord <= 1994 ep->com.dev->rdev.adap->params.max_ordird_qp) 1995 ep->ird = resp_ord; 1996 else 1997 insuff_ird = 1; 1998 } else if (ep->ird > resp_ord) { 1999 ep->ird = resp_ord; 2000 } 2001 if (ep->ord > resp_ird) { 2002 if (RELAXED_IRD_NEGOTIATION) 2003 ep->ord = resp_ird; 2004 else 2005 insuff_ird = 1; 2006 } 2007 if (insuff_ird) { 2008 err = -ENOMEM; 2009 ep->ird = resp_ord; 2010 ep->ord = resp_ird; 2011 } 2012 2013 if (ntohs(mpa_v2_params->ird) & 2014 MPA_V2_PEER2PEER_MODEL) { 2015 2016 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep); 2017 if (ntohs(mpa_v2_params->ord) & 2018 MPA_V2_RDMA_WRITE_RTR) { 2019 2020 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep); 2021 ep->mpa_attr.p2p_type = 2022 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2023 } 2024 else if (ntohs(mpa_v2_params->ord) & 2025 MPA_V2_RDMA_READ_RTR) { 2026 2027 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep); 2028 ep->mpa_attr.p2p_type = 2029 FW_RI_INIT_P2PTYPE_READ_REQ; 2030 } 2031 } 2032 } 2033 } else { 2034 2035 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep); 2036 2037 if (mpa->revision == 1) { 2038 2039 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep); 2040 2041 if (peer2peer) { 2042 2043 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep); 2044 ep->mpa_attr.p2p_type = p2p_type; 2045 } 2046 } 2047 } 2048 2049 if (set_tcpinfo(ep)) { 2050 2051 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep); 2052 printf("%s set_tcpinfo error\n", __func__); 2053 err = -ECONNRESET; 2054 goto err; 2055 } 2056 2057 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, " 2058 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__, 2059 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2060 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 2061 ep->mpa_attr.p2p_type); 2062 2063 /* 2064 * If responder's RTR does not match with that of initiator, assign 2065 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 2066 * generated when moving QP to RTS state. 2067 * A TERM message will be sent after QP has moved to RTS state 2068 */ 2069 if ((ep->mpa_attr.version == 2) && peer2peer && 2070 (ep->mpa_attr.p2p_type != p2p_type)) { 2071 2072 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep); 2073 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2074 rtr_mismatch = 1; 2075 } 2076 2077 2078 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2079 attrs.mpa_attr = ep->mpa_attr; 2080 attrs.max_ird = ep->ird; 2081 attrs.max_ord = ep->ord; 2082 attrs.llp_stream_handle = ep; 2083 attrs.next_state = C4IW_QP_STATE_RTS; 2084 2085 mask = C4IW_QP_ATTR_NEXT_STATE | 2086 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 2087 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 2088 2089 /* bind QP and TID with INIT_WR */ 2090 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2091 2092 if (err) { 2093 2094 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep); 2095 goto err; 2096 } 2097 2098 /* 2099 * If responder's RTR requirement did not match with what initiator 2100 * supports, generate TERM message 2101 */ 2102 if (rtr_mismatch) { 2103 2104 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep); 2105 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 2106 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2107 attrs.ecode = MPA_NOMATCH_RTR; 2108 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2109 attrs.send_term = 1; 2110 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2111 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2112 err = -ENOMEM; 2113 disconnect = 1; 2114 goto out; 2115 } 2116 2117 /* 2118 * Generate TERM if initiator IRD is not sufficient for responder 2119 * provided ORD. Currently, we do the same behaviour even when 2120 * responder provided IRD is also not sufficient as regards to 2121 * initiator ORD. 2122 */ 2123 if (insuff_ird) { 2124 2125 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep); 2126 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 2127 __func__); 2128 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2129 attrs.ecode = MPA_INSUFF_IRD; 2130 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2131 attrs.send_term = 1; 2132 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2133 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2134 err = -ENOMEM; 2135 disconnect = 1; 2136 goto out; 2137 } 2138 goto out; 2139 err_stop_timer: 2140 STOP_EP_TIMER(ep); 2141 err: 2142 disconnect = 2; 2143 out: 2144 connect_reply_upcall(ep, err); 2145 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep); 2146 return disconnect; 2147 } 2148 2149 /* 2150 * process_mpa_request - process streaming mode MPA request 2151 * 2152 * Returns: 2153 * 2154 * 0 upon success indicating a connect request was delivered to the ULP 2155 * or the mpa request is incomplete but valid so far. 2156 * 2157 * 1 if a failure requires the caller to close the connection. 2158 * 2159 * 2 if a failure requires the caller to abort the connection. 2160 */ 2161 static int 2162 process_mpa_request(struct c4iw_ep *ep) 2163 { 2164 struct mpa_message *mpa; 2165 struct mpa_v2_conn_params *mpa_v2_params; 2166 u16 plen; 2167 int flags = MSG_DONTWAIT; 2168 int rc; 2169 struct iovec iov; 2170 struct uio uio; 2171 enum c4iw_ep_state state = ep->com.state; 2172 2173 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]); 2174 2175 if (state != MPA_REQ_WAIT) 2176 return 0; 2177 2178 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len]; 2179 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2180 uio.uio_iov = &iov; 2181 uio.uio_iovcnt = 1; 2182 uio.uio_offset = 0; 2183 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2184 uio.uio_segflg = UIO_SYSSPACE; 2185 uio.uio_rw = UIO_READ; 2186 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */ 2187 2188 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags); 2189 if (rc == EAGAIN) 2190 return 0; 2191 else if (rc) 2192 goto err_stop_timer; 2193 2194 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data", 2195 __func__, ep->com.so)); 2196 ep->mpa_pkt_len += uio.uio_offset; 2197 2198 /* 2199 * If we get more than the supported amount of private data then we must 2200 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another 2201 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last 2202 * byte is filled by the soreceive above. 2203 */ 2204 2205 /* Don't even have the MPA message. Wait for more data to arrive. */ 2206 if (ep->mpa_pkt_len < sizeof(*mpa)) 2207 return 0; 2208 mpa = (struct mpa_message *) ep->mpa_pkt; 2209 2210 /* 2211 * Validate MPA Header. 2212 */ 2213 if (mpa->revision > mpa_rev) { 2214 log(LOG_ERR, "%s: MPA version mismatch. Local = %d," 2215 " Received = %d\n", __func__, mpa_rev, mpa->revision); 2216 goto err_stop_timer; 2217 } 2218 2219 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) 2220 goto err_stop_timer; 2221 2222 /* 2223 * Fail if there's too much private data. 2224 */ 2225 plen = ntohs(mpa->private_data_size); 2226 if (plen > MPA_MAX_PRIVATE_DATA) 2227 goto err_stop_timer; 2228 2229 /* 2230 * If plen does not account for pkt size 2231 */ 2232 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) 2233 goto err_stop_timer; 2234 2235 ep->plen = (u8) plen; 2236 2237 /* 2238 * If we don't have all the pdata yet, then bail. 2239 */ 2240 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 2241 return 0; 2242 2243 /* 2244 * If we get here we have accumulated the entire mpa 2245 * start reply message including private data. 2246 */ 2247 ep->mpa_attr.initiator = 0; 2248 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2249 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2250 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2251 ep->mpa_attr.version = mpa->revision; 2252 if (mpa->revision == 1) 2253 ep->tried_with_mpa_v1 = 1; 2254 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2255 2256 if (mpa->revision == 2) { 2257 ep->mpa_attr.enhanced_rdma_conn = 2258 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2259 if (ep->mpa_attr.enhanced_rdma_conn) { 2260 mpa_v2_params = (struct mpa_v2_conn_params *) 2261 (ep->mpa_pkt + sizeof(*mpa)); 2262 ep->ird = ntohs(mpa_v2_params->ird) & 2263 MPA_V2_IRD_ORD_MASK; 2264 ep->ird = min_t(u32, ep->ird, 2265 cur_max_read_depth(ep->com.dev)); 2266 ep->ord = ntohs(mpa_v2_params->ord) & 2267 MPA_V2_IRD_ORD_MASK; 2268 ep->ord = min_t(u32, ep->ord, 2269 cur_max_read_depth(ep->com.dev)); 2270 CTR3(KTR_IW_CXGBE, "%s initiator ird %u ord %u\n", 2271 __func__, ep->ird, ep->ord); 2272 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) 2273 if (peer2peer) { 2274 if (ntohs(mpa_v2_params->ord) & 2275 MPA_V2_RDMA_WRITE_RTR) 2276 ep->mpa_attr.p2p_type = 2277 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2278 else if (ntohs(mpa_v2_params->ord) & 2279 MPA_V2_RDMA_READ_RTR) 2280 ep->mpa_attr.p2p_type = 2281 FW_RI_INIT_P2PTYPE_READ_REQ; 2282 } 2283 } 2284 } else if (mpa->revision == 1 && peer2peer) 2285 ep->mpa_attr.p2p_type = p2p_type; 2286 2287 if (set_tcpinfo(ep)) 2288 goto err_stop_timer; 2289 2290 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, " 2291 "xmit_marker_enabled = %d, version = %d", __func__, 2292 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2293 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); 2294 2295 ep->com.state = MPA_REQ_RCVD; 2296 STOP_EP_TIMER(ep); 2297 2298 /* drive upcall */ 2299 if (ep->parent_ep->com.state != DEAD) 2300 if (connect_request_upcall(ep)) 2301 goto err_out; 2302 return 0; 2303 2304 err_stop_timer: 2305 STOP_EP_TIMER(ep); 2306 err_out: 2307 return 2; 2308 } 2309 2310 /* 2311 * Upcall from the adapter indicating data has been transmitted. 2312 * For us its just the single MPA request or reply. We can now free 2313 * the skb holding the mpa message. 2314 */ 2315 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 2316 { 2317 int err; 2318 struct c4iw_ep *ep = to_ep(cm_id); 2319 int abort = 0; 2320 2321 mutex_lock(&ep->com.mutex); 2322 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep); 2323 2324 if ((ep->com.state == DEAD) || 2325 (ep->com.state != MPA_REQ_RCVD)) { 2326 2327 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep); 2328 mutex_unlock(&ep->com.mutex); 2329 c4iw_put_ep(&ep->com); 2330 return -ECONNRESET; 2331 } 2332 set_bit(ULP_REJECT, &ep->com.history); 2333 2334 if (mpa_rev == 0) { 2335 2336 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep); 2337 abort = 1; 2338 } 2339 else { 2340 2341 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep); 2342 abort = send_mpa_reject(ep, pdata, pdata_len); 2343 } 2344 STOP_EP_TIMER(ep); 2345 err = c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2346 mutex_unlock(&ep->com.mutex); 2347 c4iw_put_ep(&ep->com); 2348 CTR3(KTR_IW_CXGBE, "%s:crc4 %p, err: %d", __func__, ep, err); 2349 return 0; 2350 } 2351 2352 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2353 { 2354 int err; 2355 struct c4iw_qp_attributes attrs = {0}; 2356 enum c4iw_qp_attr_mask mask; 2357 struct c4iw_ep *ep = to_ep(cm_id); 2358 struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 2359 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 2360 int abort = 0; 2361 2362 mutex_lock(&ep->com.mutex); 2363 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep); 2364 2365 if ((ep->com.state == DEAD) || 2366 (ep->com.state != MPA_REQ_RCVD)) { 2367 2368 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep); 2369 err = -ECONNRESET; 2370 goto err_out; 2371 } 2372 2373 BUG_ON(!qp); 2374 2375 set_bit(ULP_ACCEPT, &ep->com.history); 2376 2377 if ((conn_param->ord > c4iw_max_read_depth) || 2378 (conn_param->ird > c4iw_max_read_depth)) { 2379 2380 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep); 2381 err = -EINVAL; 2382 goto err_abort; 2383 } 2384 2385 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 2386 2387 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep); 2388 2389 if (conn_param->ord > ep->ird) { 2390 if (RELAXED_IRD_NEGOTIATION) { 2391 conn_param->ord = ep->ird; 2392 } else { 2393 ep->ird = conn_param->ird; 2394 ep->ord = conn_param->ord; 2395 send_mpa_reject(ep, conn_param->private_data, 2396 conn_param->private_data_len); 2397 err = -ENOMEM; 2398 goto err_abort; 2399 } 2400 } 2401 if (conn_param->ird < ep->ord) { 2402 if (RELAXED_IRD_NEGOTIATION && 2403 ep->ord <= h->rdev.adap->params.max_ordird_qp) { 2404 conn_param->ird = ep->ord; 2405 } else { 2406 err = -ENOMEM; 2407 goto err_abort; 2408 } 2409 } 2410 } 2411 ep->ird = conn_param->ird; 2412 ep->ord = conn_param->ord; 2413 2414 if (ep->mpa_attr.version == 1) { 2415 if (peer2peer && ep->ird == 0) 2416 ep->ird = 1; 2417 } else { 2418 if (peer2peer && 2419 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) && 2420 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0) 2421 ep->ird = 1; 2422 } 2423 2424 CTR4(KTR_IW_CXGBE, "%s %d ird %d ord %d\n", __func__, __LINE__, 2425 ep->ird, ep->ord); 2426 2427 ep->com.cm_id = cm_id; 2428 ref_cm_id(&ep->com); 2429 ep->com.qp = qp; 2430 ref_qp(ep); 2431 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2432 2433 /* bind QP to EP and move to RTS */ 2434 attrs.mpa_attr = ep->mpa_attr; 2435 attrs.max_ird = ep->ird; 2436 attrs.max_ord = ep->ord; 2437 attrs.llp_stream_handle = ep; 2438 attrs.next_state = C4IW_QP_STATE_RTS; 2439 2440 /* bind QP and TID with INIT_WR */ 2441 mask = C4IW_QP_ATTR_NEXT_STATE | 2442 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 2443 C4IW_QP_ATTR_MPA_ATTR | 2444 C4IW_QP_ATTR_MAX_IRD | 2445 C4IW_QP_ATTR_MAX_ORD; 2446 2447 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2448 if (err) { 2449 CTR3(KTR_IW_CXGBE, "%s:caca %p, err: %d", __func__, ep, err); 2450 goto err_defef_cm_id; 2451 } 2452 2453 err = send_mpa_reply(ep, conn_param->private_data, 2454 conn_param->private_data_len); 2455 if (err) { 2456 CTR3(KTR_IW_CXGBE, "%s:cacb %p, err: %d", __func__, ep, err); 2457 goto err_defef_cm_id; 2458 } 2459 2460 ep->com.state = FPDU_MODE; 2461 established_upcall(ep); 2462 mutex_unlock(&ep->com.mutex); 2463 c4iw_put_ep(&ep->com); 2464 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep); 2465 return 0; 2466 err_defef_cm_id: 2467 deref_cm_id(&ep->com); 2468 err_abort: 2469 abort = 1; 2470 err_out: 2471 if (abort) 2472 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 2473 mutex_unlock(&ep->com.mutex); 2474 c4iw_put_ep(&ep->com); 2475 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep); 2476 return err; 2477 } 2478 2479 static int 2480 c4iw_sock_create(struct sockaddr_storage *laddr, struct socket **so) 2481 { 2482 int ret; 2483 int size; 2484 struct socket *sock = NULL; 2485 2486 ret = sock_create_kern(laddr->ss_family, 2487 SOCK_STREAM, IPPROTO_TCP, &sock); 2488 if (ret) { 2489 CTR2(KTR_IW_CXGBE, "%s:Failed to create TCP socket. err %d", 2490 __func__, ret); 2491 return ret; 2492 } 2493 2494 ret = sobind(sock, (struct sockaddr *)laddr, curthread); 2495 if (ret) { 2496 CTR2(KTR_IW_CXGBE, "%s:Failed to bind socket. err %p", 2497 __func__, ret); 2498 sock_release(sock); 2499 return ret; 2500 } 2501 2502 size = laddr->ss_family == AF_INET6 ? 2503 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 2504 ret = sock_getname(sock, (struct sockaddr *)laddr, &size, 0); 2505 if (ret) { 2506 CTR2(KTR_IW_CXGBE, "%s:sock_getname failed. err %p", 2507 __func__, ret); 2508 sock_release(sock); 2509 return ret; 2510 } 2511 2512 *so = sock; 2513 return 0; 2514 } 2515 2516 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2517 { 2518 int err = 0; 2519 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2520 struct c4iw_ep *ep = NULL; 2521 struct ifnet *nh_ifp; /* Logical egress interface */ 2522 2523 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id); 2524 2525 2526 if ((conn_param->ord > c4iw_max_read_depth) || 2527 (conn_param->ird > c4iw_max_read_depth)) { 2528 2529 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id); 2530 err = -EINVAL; 2531 goto out; 2532 } 2533 ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2534 2535 init_timer(&ep->timer); 2536 ep->plen = conn_param->private_data_len; 2537 2538 if (ep->plen) { 2539 2540 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep); 2541 memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 2542 conn_param->private_data, ep->plen); 2543 } 2544 ep->ird = conn_param->ird; 2545 ep->ord = conn_param->ord; 2546 2547 if (peer2peer && ep->ord == 0) { 2548 2549 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep); 2550 ep->ord = 1; 2551 } 2552 2553 ep->com.dev = dev; 2554 ep->com.cm_id = cm_id; 2555 ref_cm_id(&ep->com); 2556 ep->com.qp = get_qhp(dev, conn_param->qpn); 2557 2558 if (!ep->com.qp) { 2559 2560 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep); 2561 err = -EINVAL; 2562 goto fail; 2563 } 2564 ref_qp(ep); 2565 ep->com.thread = curthread; 2566 2567 err = get_ifnet_from_raddr(&cm_id->remote_addr, &nh_ifp); 2568 if (err) { 2569 2570 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep); 2571 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 2572 err = EHOSTUNREACH; 2573 return err; 2574 } 2575 2576 if (!(nh_ifp->if_capenable & IFCAP_TOE) || 2577 TOEDEV(nh_ifp) == NULL) { 2578 err = -ENOPROTOOPT; 2579 goto fail; 2580 } 2581 ep->com.state = CONNECTING; 2582 ep->tos = 0; 2583 ep->com.local_addr = cm_id->local_addr; 2584 ep->com.remote_addr = cm_id->remote_addr; 2585 2586 err = c4iw_sock_create(&cm_id->local_addr, &ep->com.so); 2587 if (err) 2588 goto fail; 2589 2590 setiwsockopt(ep->com.so); 2591 err = -soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr, 2592 ep->com.thread); 2593 if (!err) { 2594 init_iwarp_socket(ep->com.so, &ep->com); 2595 goto out; 2596 } else 2597 goto fail_free_so; 2598 2599 fail_free_so: 2600 sock_release(ep->com.so); 2601 fail: 2602 deref_cm_id(&ep->com); 2603 c4iw_put_ep(&ep->com); 2604 ep = NULL; 2605 out: 2606 CTR2(KTR_IW_CXGBE, "%s:ccE ret:%d", __func__, err); 2607 return err; 2608 } 2609 2610 /* 2611 * iwcm->create_listen. Returns -errno on failure. 2612 */ 2613 int 2614 c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 2615 { 2616 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2617 struct c4iw_listen_ep *lep = NULL; 2618 struct listen_port_info *port_info = NULL; 2619 int rc = 0; 2620 2621 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, backlog %s", __func__, cm_id, 2622 backlog); 2623 lep = alloc_ep(sizeof(*lep), GFP_KERNEL); 2624 lep->com.cm_id = cm_id; 2625 ref_cm_id(&lep->com); 2626 lep->com.dev = dev; 2627 lep->backlog = backlog; 2628 lep->com.local_addr = cm_id->local_addr; 2629 lep->com.thread = curthread; 2630 cm_id->provider_data = lep; 2631 lep->com.state = LISTEN; 2632 2633 /* In case of INDADDR_ANY, ibcore creates cmid for each device and 2634 * invokes iw_cxgbe listener callbacks assuming that iw_cxgbe creates 2635 * HW listeners for each device seperately. But toecore expects single 2636 * solisten() call with INADDR_ANY address to create HW listeners on 2637 * all devices for a given port number. So iw_cxgbe driver calls 2638 * solisten() only once for INADDR_ANY(usually done at first time 2639 * listener callback from ibcore). And all the subsequent INADDR_ANY 2640 * listener callbacks from ibcore(for the same port address) do not 2641 * invoke solisten() as first listener callback has already created 2642 * listeners for all other devices(via solisten). 2643 */ 2644 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr)) { 2645 port_info = add_ep_to_listenlist(lep); 2646 /* skip solisten() if refcnt > 1, as the listeners were 2647 * alredy created by 'Master lep' 2648 */ 2649 if (port_info->refcnt > 1) { 2650 /* As there will be only one listener socket for a TCP 2651 * port, copy Master lep's socket pointer to other lep's 2652 * that are belonging to same TCP port. 2653 */ 2654 struct c4iw_listen_ep *head_lep = 2655 container_of(port_info->lep_list.next, 2656 struct c4iw_listen_ep, listen_ep_list); 2657 lep->com.so = head_lep->com.so; 2658 goto out; 2659 } 2660 } 2661 rc = c4iw_sock_create(&cm_id->local_addr, &lep->com.so); 2662 if (rc) { 2663 CTR2(KTR_IW_CXGBE, "%s:Failed to create socket. err %d", 2664 __func__, rc); 2665 goto fail; 2666 } 2667 2668 rc = solisten(lep->com.so, backlog, curthread); 2669 if (rc) { 2670 CTR3(KTR_IW_CXGBE, "%s:Failed to listen on sock:%p. err %d", 2671 __func__, lep->com.so, rc); 2672 goto fail_free_so; 2673 } 2674 init_iwarp_socket(lep->com.so, &lep->com); 2675 out: 2676 return 0; 2677 2678 fail_free_so: 2679 sock_release(lep->com.so); 2680 fail: 2681 if (port_info) 2682 rem_ep_from_listenlist(lep); 2683 deref_cm_id(&lep->com); 2684 c4iw_put_ep(&lep->com); 2685 return rc; 2686 } 2687 2688 int 2689 c4iw_destroy_listen(struct iw_cm_id *cm_id) 2690 { 2691 struct c4iw_listen_ep *lep = to_listen_ep(cm_id); 2692 2693 mutex_lock(&lep->com.mutex); 2694 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, state %s", __func__, cm_id, 2695 states[lep->com.state]); 2696 2697 lep->com.state = DEAD; 2698 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr)) { 2699 /* if no refcount then close listen socket */ 2700 if (!rem_ep_from_listenlist(lep)) 2701 close_socket(lep->com.so); 2702 } else 2703 close_socket(lep->com.so); 2704 deref_cm_id(&lep->com); 2705 mutex_unlock(&lep->com.mutex); 2706 c4iw_put_ep(&lep->com); 2707 return 0; 2708 } 2709 2710 int __c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2711 { 2712 int ret; 2713 mutex_lock(&ep->com.mutex); 2714 ret = c4iw_ep_disconnect(ep, abrupt, gfp); 2715 mutex_unlock(&ep->com.mutex); 2716 return ret; 2717 } 2718 2719 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2720 { 2721 int ret = 0; 2722 int close = 0; 2723 int fatal = 0; 2724 struct c4iw_rdev *rdev; 2725 2726 2727 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep); 2728 2729 rdev = &ep->com.dev->rdev; 2730 2731 if (c4iw_fatal_error(rdev)) { 2732 2733 CTR2(KTR_IW_CXGBE, "%s:ced1 %p", __func__, ep); 2734 fatal = 1; 2735 close_complete_upcall(ep, -ECONNRESET); 2736 send_abort(ep); 2737 ep->com.state = DEAD; 2738 } 2739 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep, 2740 states[ep->com.state]); 2741 2742 /* 2743 * Ref the ep here in case we have fatal errors causing the 2744 * ep to be released and freed. 2745 */ 2746 c4iw_get_ep(&ep->com); 2747 switch (ep->com.state) { 2748 2749 case MPA_REQ_WAIT: 2750 case MPA_REQ_SENT: 2751 case MPA_REQ_RCVD: 2752 case MPA_REP_SENT: 2753 case FPDU_MODE: 2754 close = 1; 2755 if (abrupt) 2756 ep->com.state = ABORTING; 2757 else { 2758 ep->com.state = CLOSING; 2759 START_EP_TIMER(ep); 2760 } 2761 set_bit(CLOSE_SENT, &ep->com.flags); 2762 break; 2763 2764 case CLOSING: 2765 2766 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2767 2768 close = 1; 2769 if (abrupt) { 2770 STOP_EP_TIMER(ep); 2771 ep->com.state = ABORTING; 2772 } else 2773 ep->com.state = MORIBUND; 2774 } 2775 break; 2776 2777 case MORIBUND: 2778 case ABORTING: 2779 case DEAD: 2780 CTR3(KTR_IW_CXGBE, 2781 "%s ignoring disconnect ep %p state %u", __func__, 2782 ep, ep->com.state); 2783 break; 2784 2785 default: 2786 BUG(); 2787 break; 2788 } 2789 2790 2791 if (close) { 2792 2793 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep); 2794 2795 if (abrupt) { 2796 2797 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep); 2798 set_bit(EP_DISC_ABORT, &ep->com.history); 2799 close_complete_upcall(ep, -ECONNRESET); 2800 ret = send_abort(ep); 2801 if (ret) 2802 fatal = 1; 2803 } else { 2804 2805 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep); 2806 set_bit(EP_DISC_CLOSE, &ep->com.history); 2807 2808 if (!ep->parent_ep) 2809 ep->com.state = MORIBUND; 2810 sodisconnect(ep->com.so); 2811 } 2812 2813 } 2814 2815 if (fatal) { 2816 set_bit(EP_DISC_FAIL, &ep->com.history); 2817 if (!abrupt) { 2818 STOP_EP_TIMER(ep); 2819 close_complete_upcall(ep, -EIO); 2820 } 2821 if (ep->com.qp) { 2822 struct c4iw_qp_attributes attrs = {0}; 2823 2824 attrs.next_state = C4IW_QP_STATE_ERROR; 2825 ret = c4iw_modify_qp(ep->com.dev, ep->com.qp, 2826 C4IW_QP_ATTR_NEXT_STATE, 2827 &attrs, 1); 2828 if (ret) { 2829 CTR2(KTR_IW_CXGBE, "%s:ced7 %p", __func__, ep); 2830 printf("%s - qp <- error failed!\n", __func__); 2831 } 2832 } 2833 release_ep_resources(ep); 2834 ep->com.state = DEAD; 2835 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep); 2836 } 2837 c4iw_put_ep(&ep->com); 2838 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep); 2839 return ret; 2840 } 2841 2842 #ifdef C4IW_EP_REDIRECT 2843 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, 2844 struct l2t_entry *l2t) 2845 { 2846 struct c4iw_ep *ep = ctx; 2847 2848 if (ep->dst != old) 2849 return 0; 2850 2851 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, 2852 l2t); 2853 dst_hold(new); 2854 cxgb4_l2t_release(ep->l2t); 2855 ep->l2t = l2t; 2856 dst_release(old); 2857 ep->dst = new; 2858 return 1; 2859 } 2860 #endif 2861 2862 2863 2864 static void ep_timeout(unsigned long arg) 2865 { 2866 struct c4iw_ep *ep = (struct c4iw_ep *)arg; 2867 2868 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 2869 2870 /* 2871 * Only insert if it is not already on the list. 2872 */ 2873 if (!(ep->com.ep_events & C4IW_EVENT_TIMEOUT)) { 2874 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep); 2875 add_ep_to_req_list(ep, C4IW_EVENT_TIMEOUT); 2876 } 2877 } 2878 } 2879 2880 static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl) 2881 { 2882 uint64_t val = be64toh(*rpl); 2883 int ret; 2884 struct c4iw_wr_wait *wr_waitp; 2885 2886 ret = (int)((val >> 8) & 0xff); 2887 wr_waitp = (struct c4iw_wr_wait *)rpl[1]; 2888 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret); 2889 if (wr_waitp) 2890 c4iw_wake_up(wr_waitp, ret ? -ret : 0); 2891 2892 return (0); 2893 } 2894 2895 static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl) 2896 { 2897 struct cqe_list_entry *cle; 2898 unsigned long flag; 2899 2900 cle = malloc(sizeof(*cle), M_CXGBE, M_NOWAIT); 2901 cle->rhp = sc->iwarp_softc; 2902 cle->err_cqe = *(const struct t4_cqe *)(&rpl[0]); 2903 2904 spin_lock_irqsave(&err_cqe_lock, flag); 2905 list_add_tail(&cle->entry, &err_cqe_list); 2906 queue_work(c4iw_taskq, &c4iw_task); 2907 spin_unlock_irqrestore(&err_cqe_lock, flag); 2908 2909 return (0); 2910 } 2911 2912 static int 2913 process_terminate(struct c4iw_ep *ep) 2914 { 2915 struct c4iw_qp_attributes attrs = {0}; 2916 2917 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep); 2918 2919 if (ep && ep->com.qp) { 2920 2921 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", 2922 ep->hwtid, ep->com.qp->wq.sq.qid); 2923 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2924 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 2925 1); 2926 } else 2927 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", 2928 ep->hwtid); 2929 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep); 2930 2931 return 0; 2932 } 2933 2934 int __init c4iw_cm_init(void) 2935 { 2936 2937 t4_register_cpl_handler(CPL_RDMA_TERMINATE, terminate); 2938 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, fw6_wr_rpl); 2939 t4_register_fw_msg_handler(FW6_TYPE_CQE, fw6_cqe_handler); 2940 t4_register_an_handler(c4iw_ev_handler); 2941 2942 TAILQ_INIT(&req_list); 2943 spin_lock_init(&req_lock); 2944 INIT_LIST_HEAD(&err_cqe_list); 2945 spin_lock_init(&err_cqe_lock); 2946 2947 INIT_WORK(&c4iw_task, process_req); 2948 2949 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe"); 2950 if (!c4iw_taskq) 2951 return -ENOMEM; 2952 2953 return 0; 2954 } 2955 2956 void __exit c4iw_cm_term(void) 2957 { 2958 WARN_ON(!TAILQ_EMPTY(&req_list)); 2959 WARN_ON(!list_empty(&err_cqe_list)); 2960 flush_workqueue(c4iw_taskq); 2961 destroy_workqueue(c4iw_taskq); 2962 2963 t4_register_cpl_handler(CPL_RDMA_TERMINATE, NULL); 2964 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, NULL); 2965 t4_register_fw_msg_handler(FW6_TYPE_CQE, NULL); 2966 t4_register_an_handler(NULL); 2967 } 2968 #endif 2969