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 ifnet *ifp = NULL, *hw_ifp = NULL; 343 struct listen_port_info *port_info = NULL; 344 int i = 0, found_portinfo = 0, found_lep = 0; 345 uint16_t port; 346 347 /* 348 * STEP 1: Figure out 'ifp' of the physical interface, not pseudo 349 * interfaces like vlan, lagg, etc.. 350 * TBD: lagg support, lagg + vlan support. 351 */ 352 ifp = TOEPCB(so)->l2te->ifp; 353 if (ifp->if_type == IFT_L2VLAN) { 354 hw_ifp = VLAN_TRUNKDEV(ifp); 355 if (hw_ifp == NULL) { 356 CTR4(KTR_IW_CXGBE, "%s: Failed to get parent ifnet of " 357 "vlan ifnet %p, sock %p, master_lep %p", 358 __func__, ifp, so, master_lep); 359 return (NULL); 360 } 361 } else 362 hw_ifp = ifp; 363 364 /* STEP 2: Find 'port_info' with listener local port address. */ 365 port = (master_lep->com.local_addr.ss_family == AF_INET) ? 366 ((struct sockaddr_in *)&master_lep->com.local_addr)->sin_port : 367 ((struct sockaddr_in6 *)&master_lep->com.local_addr)->sin6_port; 368 369 370 mutex_lock(&listen_port_mutex); 371 list_for_each_entry(port_info, &listen_port_list, list) 372 if (port_info->port_num == port) { 373 found_portinfo =1; 374 break; 375 } 376 if (!found_portinfo) 377 goto out; 378 379 /* STEP 3: Traverse through list of lep's that are bound to the current 380 * TCP port address and find the lep that belongs to the ifnet on which 381 * the SYN frame was received. 382 */ 383 list_for_each_entry(lep, &port_info->lep_list, listen_ep_list) { 384 adap = lep->com.dev->rdev.adap; 385 for_each_port(adap, i) { 386 if (hw_ifp == adap->port[i]->vi[0].ifp) { 387 found_lep =1; 388 goto out; 389 } 390 } 391 } 392 out: 393 mutex_unlock(&listen_port_mutex); 394 return found_lep ? lep : (NULL); 395 } 396 397 static void process_timeout(struct c4iw_ep *ep) 398 { 399 struct c4iw_qp_attributes attrs = {0}; 400 int abort = 1; 401 402 CTR4(KTR_IW_CXGBE, "%s ep :%p, tid:%u, state %d", __func__, 403 ep, ep->hwtid, ep->com.state); 404 set_bit(TIMEDOUT, &ep->com.history); 405 switch (ep->com.state) { 406 case MPA_REQ_SENT: 407 connect_reply_upcall(ep, -ETIMEDOUT); 408 break; 409 case MPA_REQ_WAIT: 410 case MPA_REQ_RCVD: 411 case MPA_REP_SENT: 412 case FPDU_MODE: 413 break; 414 case CLOSING: 415 case MORIBUND: 416 if (ep->com.cm_id && ep->com.qp) { 417 attrs.next_state = C4IW_QP_STATE_ERROR; 418 c4iw_modify_qp(ep->com.dev, ep->com.qp, 419 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 420 } 421 close_complete_upcall(ep, -ETIMEDOUT); 422 break; 423 case ABORTING: 424 case DEAD: 425 /* 426 * These states are expected if the ep timed out at the same 427 * time as another thread was calling stop_ep_timer(). 428 * So we silently do nothing for these states. 429 */ 430 abort = 0; 431 break; 432 default: 433 CTR4(KTR_IW_CXGBE, "%s unexpected state ep %p tid %u state %u\n" 434 , __func__, ep, ep->hwtid, ep->com.state); 435 abort = 0; 436 } 437 if (abort) 438 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 439 c4iw_put_ep(&ep->com); 440 return; 441 } 442 443 struct cqe_list_entry { 444 struct list_head entry; 445 struct c4iw_dev *rhp; 446 struct t4_cqe err_cqe; 447 }; 448 449 static void 450 process_err_cqes(void) 451 { 452 unsigned long flag; 453 struct cqe_list_entry *cle; 454 455 spin_lock_irqsave(&err_cqe_lock, flag); 456 while (!list_empty(&err_cqe_list)) { 457 struct list_head *tmp; 458 tmp = err_cqe_list.next; 459 list_del(tmp); 460 tmp->next = tmp->prev = NULL; 461 spin_unlock_irqrestore(&err_cqe_lock, flag); 462 cle = list_entry(tmp, struct cqe_list_entry, entry); 463 c4iw_ev_dispatch(cle->rhp, &cle->err_cqe); 464 free(cle, M_CXGBE); 465 spin_lock_irqsave(&err_cqe_lock, flag); 466 } 467 spin_unlock_irqrestore(&err_cqe_lock, flag); 468 469 return; 470 } 471 472 static void 473 process_req(struct work_struct *ctx) 474 { 475 struct c4iw_ep_common *epc; 476 unsigned long flag; 477 int ep_events; 478 479 process_err_cqes(); 480 spin_lock_irqsave(&req_lock, flag); 481 while (!TAILQ_EMPTY(&req_list)) { 482 epc = TAILQ_FIRST(&req_list); 483 TAILQ_REMOVE(&req_list, epc, entry); 484 epc->entry.tqe_prev = NULL; 485 ep_events = epc->ep_events; 486 epc->ep_events = 0; 487 spin_unlock_irqrestore(&req_lock, flag); 488 mutex_lock(&epc->mutex); 489 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, ep_state %s events 0x%x", 490 __func__, epc->so, epc, states[epc->state], ep_events); 491 if (ep_events & C4IW_EVENT_TERM) 492 process_terminate((struct c4iw_ep *)epc); 493 if (ep_events & C4IW_EVENT_TIMEOUT) 494 process_timeout((struct c4iw_ep *)epc); 495 if (ep_events & C4IW_EVENT_SOCKET) 496 process_socket_event((struct c4iw_ep *)epc); 497 mutex_unlock(&epc->mutex); 498 c4iw_put_ep(epc); 499 process_err_cqes(); 500 spin_lock_irqsave(&req_lock, flag); 501 } 502 spin_unlock_irqrestore(&req_lock, flag); 503 } 504 505 /* 506 * XXX: doesn't belong here in the iWARP driver. 507 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is 508 * set. Is this a valid assumption for active open? 509 */ 510 static int 511 set_tcpinfo(struct c4iw_ep *ep) 512 { 513 struct socket *so = ep->com.so; 514 struct inpcb *inp = sotoinpcb(so); 515 struct tcpcb *tp; 516 struct toepcb *toep; 517 int rc = 0; 518 519 INP_WLOCK(inp); 520 tp = intotcpcb(inp); 521 if ((tp->t_flags & TF_TOE) == 0) { 522 rc = EINVAL; 523 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n", 524 __func__, so, ep); 525 goto done; 526 } 527 toep = TOEPCB(so); 528 529 ep->hwtid = toep->tid; 530 ep->snd_seq = tp->snd_nxt; 531 ep->rcv_seq = tp->rcv_nxt; 532 ep->emss = max(tp->t_maxseg, 128); 533 done: 534 INP_WUNLOCK(inp); 535 return (rc); 536 537 } 538 static int 539 get_ifnet_from_raddr(struct sockaddr_storage *raddr, struct ifnet **ifp) 540 { 541 int err = 0; 542 543 if (raddr->ss_family == AF_INET) { 544 struct sockaddr_in *raddr4 = (struct sockaddr_in *)raddr; 545 struct nhop4_extended nh4 = {0}; 546 547 err = fib4_lookup_nh_ext(RT_DEFAULT_FIB, raddr4->sin_addr, 548 NHR_REF, 0, &nh4); 549 *ifp = nh4.nh_ifp; 550 if (err) 551 fib4_free_nh_ext(RT_DEFAULT_FIB, &nh4); 552 } else { 553 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)raddr; 554 struct nhop6_extended nh6 = {0}; 555 struct in6_addr addr6; 556 uint32_t scopeid; 557 558 memset(&addr6, 0, sizeof(addr6)); 559 in6_splitscope((struct in6_addr *)&raddr6->sin6_addr, 560 &addr6, &scopeid); 561 err = fib6_lookup_nh_ext(RT_DEFAULT_FIB, &addr6, scopeid, 562 NHR_REF, 0, &nh6); 563 *ifp = nh6.nh_ifp; 564 if (err) 565 fib6_free_nh_ext(RT_DEFAULT_FIB, &nh6); 566 } 567 568 CTR2(KTR_IW_CXGBE, "%s: return: %d", __func__, err); 569 return err; 570 } 571 572 static void 573 close_socket(struct socket *so) 574 { 575 uninit_iwarp_socket(so); 576 soclose(so); 577 } 578 579 static void 580 process_peer_close(struct c4iw_ep *ep) 581 { 582 struct c4iw_qp_attributes attrs = {0}; 583 int disconnect = 1; 584 int release = 0; 585 586 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep, 587 ep->com.so, states[ep->com.state]); 588 589 switch (ep->com.state) { 590 591 case MPA_REQ_WAIT: 592 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT DEAD", 593 __func__, ep); 594 /* Fallthrough */ 595 case MPA_REQ_SENT: 596 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT DEAD", 597 __func__, ep); 598 ep->com.state = DEAD; 599 connect_reply_upcall(ep, -ECONNABORTED); 600 601 disconnect = 0; 602 STOP_EP_TIMER(ep); 603 close_socket(ep->com.so); 604 deref_cm_id(&ep->com); 605 release = 1; 606 break; 607 608 case MPA_REQ_RCVD: 609 610 /* 611 * We're gonna mark this puppy DEAD, but keep 612 * the reference on it until the ULP accepts or 613 * rejects the CR. 614 */ 615 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING", 616 __func__, ep); 617 ep->com.state = CLOSING; 618 break; 619 620 case MPA_REP_SENT: 621 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING", 622 __func__, ep); 623 ep->com.state = CLOSING; 624 break; 625 626 case FPDU_MODE: 627 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING", 628 __func__, ep); 629 START_EP_TIMER(ep); 630 ep->com.state = CLOSING; 631 attrs.next_state = C4IW_QP_STATE_CLOSING; 632 c4iw_modify_qp(ep->com.dev, ep->com.qp, 633 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 634 peer_close_upcall(ep); 635 break; 636 637 case ABORTING: 638 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)", 639 __func__, ep); 640 disconnect = 0; 641 break; 642 643 case CLOSING: 644 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND", 645 __func__, ep); 646 ep->com.state = MORIBUND; 647 disconnect = 0; 648 break; 649 650 case MORIBUND: 651 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__, 652 ep); 653 STOP_EP_TIMER(ep); 654 if (ep->com.cm_id && ep->com.qp) { 655 attrs.next_state = C4IW_QP_STATE_IDLE; 656 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 657 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 658 } 659 close_socket(ep->com.so); 660 close_complete_upcall(ep, 0); 661 ep->com.state = DEAD; 662 release = 1; 663 disconnect = 0; 664 break; 665 666 case DEAD: 667 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)", 668 __func__, ep); 669 disconnect = 0; 670 break; 671 672 default: 673 panic("%s: ep %p state %d", __func__, ep, 674 ep->com.state); 675 break; 676 } 677 678 679 if (disconnect) { 680 681 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep); 682 c4iw_ep_disconnect(ep, 0, M_NOWAIT); 683 } 684 if (release) { 685 686 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep); 687 c4iw_put_ep(&ep->com); 688 } 689 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep); 690 return; 691 } 692 693 static void 694 process_conn_error(struct c4iw_ep *ep) 695 { 696 struct c4iw_qp_attributes attrs = {0}; 697 int ret; 698 int state; 699 700 state = ep->com.state; 701 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s", 702 __func__, ep, ep->com.so, ep->com.so->so_error, 703 states[ep->com.state]); 704 705 switch (state) { 706 707 case MPA_REQ_WAIT: 708 STOP_EP_TIMER(ep); 709 c4iw_put_ep(&ep->parent_ep->com); 710 break; 711 712 case MPA_REQ_SENT: 713 STOP_EP_TIMER(ep); 714 connect_reply_upcall(ep, -ECONNRESET); 715 break; 716 717 case MPA_REP_SENT: 718 ep->com.rpl_err = ECONNRESET; 719 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep); 720 break; 721 722 case MPA_REQ_RCVD: 723 break; 724 725 case MORIBUND: 726 case CLOSING: 727 STOP_EP_TIMER(ep); 728 /*FALLTHROUGH*/ 729 case FPDU_MODE: 730 731 if (ep->com.cm_id && ep->com.qp) { 732 733 attrs.next_state = C4IW_QP_STATE_ERROR; 734 ret = c4iw_modify_qp(ep->com.qp->rhp, 735 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 736 &attrs, 1); 737 if (ret) 738 log(LOG_ERR, 739 "%s - qp <- error failed!\n", 740 __func__); 741 } 742 peer_abort_upcall(ep); 743 break; 744 745 case ABORTING: 746 break; 747 748 case DEAD: 749 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!", 750 __func__, ep->com.so->so_error); 751 return; 752 753 default: 754 panic("%s: ep %p state %d", __func__, ep, state); 755 break; 756 } 757 758 if (state != ABORTING) { 759 close_socket(ep->com.so); 760 ep->com.state = DEAD; 761 c4iw_put_ep(&ep->com); 762 } 763 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep); 764 return; 765 } 766 767 static void 768 process_close_complete(struct c4iw_ep *ep) 769 { 770 struct c4iw_qp_attributes attrs = {0}; 771 int release = 0; 772 773 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep, 774 ep->com.so, states[ep->com.state]); 775 776 /* The cm_id may be null if we failed to connect */ 777 set_bit(CLOSE_CON_RPL, &ep->com.history); 778 779 switch (ep->com.state) { 780 781 case CLOSING: 782 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND", 783 __func__, ep); 784 ep->com.state = MORIBUND; 785 break; 786 787 case MORIBUND: 788 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__, 789 ep); 790 STOP_EP_TIMER(ep); 791 792 if ((ep->com.cm_id) && (ep->com.qp)) { 793 794 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE", 795 __func__, ep); 796 attrs.next_state = C4IW_QP_STATE_IDLE; 797 c4iw_modify_qp(ep->com.dev, 798 ep->com.qp, 799 C4IW_QP_ATTR_NEXT_STATE, 800 &attrs, 1); 801 } 802 803 close_socket(ep->com.so); 804 close_complete_upcall(ep, 0); 805 ep->com.state = DEAD; 806 release = 1; 807 break; 808 809 case ABORTING: 810 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep); 811 break; 812 813 case DEAD: 814 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep); 815 break; 816 default: 817 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p unknown ep state", 818 __func__, ep); 819 panic("%s:pcc6 %p unknown ep state", __func__, ep); 820 break; 821 } 822 823 if (release) { 824 825 CTR2(KTR_IW_CXGBE, "%s:pcc8 %p", __func__, ep); 826 release_ep_resources(ep); 827 } 828 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep); 829 return; 830 } 831 832 static void 833 setiwsockopt(struct socket *so) 834 { 835 int rc; 836 struct sockopt sopt; 837 int on = 1; 838 839 sopt.sopt_dir = SOPT_SET; 840 sopt.sopt_level = IPPROTO_TCP; 841 sopt.sopt_name = TCP_NODELAY; 842 sopt.sopt_val = (caddr_t)&on; 843 sopt.sopt_valsize = sizeof on; 844 sopt.sopt_td = NULL; 845 rc = sosetopt(so, &sopt); 846 if (rc) { 847 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n", 848 __func__, so, rc); 849 } 850 } 851 852 static void 853 init_iwarp_socket(struct socket *so, void *arg) 854 { 855 if (SOLISTENING(so)) { 856 SOLISTEN_LOCK(so); 857 solisten_upcall_set(so, c4iw_so_upcall, arg); 858 so->so_state |= SS_NBIO; 859 SOLISTEN_UNLOCK(so); 860 } else { 861 SOCKBUF_LOCK(&so->so_rcv); 862 soupcall_set(so, SO_RCV, c4iw_so_upcall, arg); 863 so->so_state |= SS_NBIO; 864 SOCKBUF_UNLOCK(&so->so_rcv); 865 } 866 } 867 868 static void 869 uninit_iwarp_socket(struct socket *so) 870 { 871 if (SOLISTENING(so)) { 872 SOLISTEN_LOCK(so); 873 solisten_upcall_set(so, NULL, NULL); 874 SOLISTEN_UNLOCK(so); 875 } else { 876 SOCKBUF_LOCK(&so->so_rcv); 877 soupcall_clear(so, SO_RCV); 878 SOCKBUF_UNLOCK(&so->so_rcv); 879 } 880 } 881 882 static void 883 process_data(struct c4iw_ep *ep) 884 { 885 int disconnect = 0; 886 887 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sbused %d", __func__, 888 ep->com.so, ep, states[ep->com.state], sbused(&ep->com.so->so_rcv)); 889 890 switch (ep->com.state) { 891 case MPA_REQ_SENT: 892 disconnect = process_mpa_reply(ep); 893 break; 894 case MPA_REQ_WAIT: 895 disconnect = process_mpa_request(ep); 896 if (disconnect) 897 /* Refered in process_newconn() */ 898 c4iw_put_ep(&ep->parent_ep->com); 899 break; 900 default: 901 if (sbused(&ep->com.so->so_rcv)) 902 log(LOG_ERR, "%s: Unexpected streaming data. ep %p, " 903 "state %d, so %p, so_state 0x%x, sbused %u\n", 904 __func__, ep, ep->com.state, ep->com.so, 905 ep->com.so->so_state, sbused(&ep->com.so->so_rcv)); 906 break; 907 } 908 if (disconnect) 909 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); 910 911 } 912 913 static void 914 process_connected(struct c4iw_ep *ep) 915 { 916 struct socket *so = ep->com.so; 917 918 if ((so->so_state & SS_ISCONNECTED) && !so->so_error) { 919 if (send_mpa_req(ep)) 920 goto err; 921 } else { 922 connect_reply_upcall(ep, -so->so_error); 923 goto err; 924 } 925 return; 926 err: 927 close_socket(so); 928 ep->com.state = DEAD; 929 c4iw_put_ep(&ep->com); 930 return; 931 } 932 933 static inline int c4iw_zero_addr(struct sockaddr *addr) 934 { 935 struct in6_addr *ip6; 936 937 if (addr->sa_family == AF_INET) 938 return IN_ZERONET( 939 ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr)); 940 else { 941 ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; 942 return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | 943 ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; 944 } 945 } 946 947 static inline int c4iw_loopback_addr(struct sockaddr *addr) 948 { 949 if (addr->sa_family == AF_INET) 950 return IN_LOOPBACK( 951 ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 952 else 953 return IN6_IS_ADDR_LOOPBACK( 954 &((struct sockaddr_in6 *) addr)->sin6_addr); 955 } 956 957 static inline int c4iw_any_addr(struct sockaddr *addr) 958 { 959 return c4iw_zero_addr(addr) || c4iw_loopback_addr(addr); 960 } 961 962 static void 963 process_newconn(struct c4iw_listen_ep *master_lep, struct socket *new_so) 964 { 965 struct c4iw_listen_ep *real_lep = NULL; 966 struct c4iw_ep *new_ep = NULL; 967 struct sockaddr_in *remote = NULL; 968 int ret = 0; 969 970 MPASS(new_so != NULL); 971 972 if (c4iw_any_addr((struct sockaddr *)&master_lep->com.local_addr)) { 973 /* Here we need to find the 'real_lep' that belongs to the 974 * incomming socket's network interface, such that the newly 975 * created 'ep' can be attached to the real 'lep'. 976 */ 977 real_lep = find_real_listen_ep(master_lep, new_so); 978 if (real_lep == NULL) { 979 CTR2(KTR_IW_CXGBE, "%s: Could not find the real listen " 980 "ep for sock: %p", __func__, new_so); 981 log(LOG_ERR,"%s: Could not find the real listen ep for " 982 "sock: %p\n", __func__, new_so); 983 /* FIXME: properly free the 'new_so' in failure case. 984 * Use of soabort() and soclose() are not legal 985 * here(before soaccept()). 986 */ 987 return; 988 } 989 } else /* for Non-Wildcard address, master_lep is always the real_lep */ 990 real_lep = master_lep; 991 992 new_ep = alloc_ep(sizeof(*new_ep), GFP_KERNEL); 993 994 CTR6(KTR_IW_CXGBE, "%s: master_lep %p, real_lep: %p, new ep %p, " 995 "listening so %p, new so %p", __func__, master_lep, real_lep, 996 new_ep, master_lep->com.so, new_so); 997 998 new_ep->com.dev = real_lep->com.dev; 999 new_ep->com.so = new_so; 1000 new_ep->com.cm_id = NULL; 1001 new_ep->com.thread = real_lep->com.thread; 1002 new_ep->parent_ep = real_lep; 1003 1004 GET_LOCAL_ADDR(&new_ep->com.local_addr, new_so); 1005 GET_REMOTE_ADDR(&new_ep->com.remote_addr, new_so); 1006 c4iw_get_ep(&real_lep->com); 1007 init_timer(&new_ep->timer); 1008 new_ep->com.state = MPA_REQ_WAIT; 1009 START_EP_TIMER(new_ep); 1010 1011 setiwsockopt(new_so); 1012 ret = soaccept(new_so, (struct sockaddr **)&remote); 1013 if (ret != 0) { 1014 CTR4(KTR_IW_CXGBE, 1015 "%s:listen sock:%p, new sock:%p, ret:%d\n", 1016 __func__, master_lep->com.so, new_so, ret); 1017 if (remote != NULL) 1018 free(remote, M_SONAME); 1019 uninit_iwarp_socket(new_so); 1020 soclose(new_so); 1021 c4iw_put_ep(&new_ep->com); 1022 c4iw_put_ep(&real_lep->com); 1023 return; 1024 } 1025 free(remote, M_SONAME); 1026 1027 /* MPA request might have been queued up on the socket already, so we 1028 * initialize the socket/upcall_handler under lock to prevent processing 1029 * MPA request on another thread(via process_req()) simultaniously. 1030 */ 1031 c4iw_get_ep(&new_ep->com); /* Dereferenced at the end below, this is to 1032 avoid freeing of ep before ep unlock. */ 1033 mutex_lock(&new_ep->com.mutex); 1034 init_iwarp_socket(new_so, &new_ep->com); 1035 1036 ret = process_mpa_request(new_ep); 1037 if (ret) { 1038 /* ABORT */ 1039 c4iw_ep_disconnect(new_ep, 1, GFP_KERNEL); 1040 c4iw_put_ep(&real_lep->com); 1041 } 1042 mutex_unlock(&new_ep->com.mutex); 1043 c4iw_put_ep(&new_ep->com); 1044 return; 1045 } 1046 1047 static int 1048 add_ep_to_req_list(struct c4iw_ep *ep, int new_ep_event) 1049 { 1050 unsigned long flag; 1051 1052 spin_lock_irqsave(&req_lock, flag); 1053 if (ep && ep->com.so) { 1054 ep->com.ep_events |= new_ep_event; 1055 if (!ep->com.entry.tqe_prev) { 1056 c4iw_get_ep(&ep->com); 1057 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry); 1058 queue_work(c4iw_taskq, &c4iw_task); 1059 } 1060 } 1061 spin_unlock_irqrestore(&req_lock, flag); 1062 1063 return (0); 1064 } 1065 1066 static int 1067 c4iw_so_upcall(struct socket *so, void *arg, int waitflag) 1068 { 1069 struct c4iw_ep *ep = arg; 1070 1071 CTR6(KTR_IW_CXGBE, 1072 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p", 1073 __func__, so, so->so_state, ep, states[ep->com.state], 1074 ep->com.entry.tqe_prev); 1075 1076 MPASS(ep->com.so == so); 1077 /* 1078 * Wake up any threads waiting in rdma_init()/rdma_fini(), 1079 * with locks held. 1080 */ 1081 if (so->so_error) 1082 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 1083 add_ep_to_req_list(ep, C4IW_EVENT_SOCKET); 1084 1085 return (SU_OK); 1086 } 1087 1088 1089 static int 1090 terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) 1091 { 1092 struct adapter *sc = iq->adapter; 1093 const struct cpl_rdma_terminate *cpl = mtod(m, const void *); 1094 unsigned int tid = GET_TID(cpl); 1095 struct toepcb *toep = lookup_tid(sc, tid); 1096 struct socket *so; 1097 struct c4iw_ep *ep; 1098 1099 INP_WLOCK(toep->inp); 1100 so = inp_inpcbtosocket(toep->inp); 1101 ep = so->so_rcv.sb_upcallarg; 1102 INP_WUNLOCK(toep->inp); 1103 1104 CTR3(KTR_IW_CXGBE, "%s: so %p, ep %p", __func__, so, ep); 1105 add_ep_to_req_list(ep, C4IW_EVENT_TERM); 1106 1107 return 0; 1108 } 1109 1110 static void 1111 process_socket_event(struct c4iw_ep *ep) 1112 { 1113 int state = ep->com.state; 1114 struct socket *so = ep->com.so; 1115 1116 if (ep->com.state == DEAD) { 1117 CTR3(KTR_IW_CXGBE, "%s: Pending socket event discarded " 1118 "ep %p ep_state %s", __func__, ep, states[state]); 1119 return; 1120 } 1121 1122 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, " 1123 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state, 1124 so->so_error, so->so_rcv.sb_state, ep, states[state]); 1125 1126 if (state == CONNECTING) { 1127 process_connected(ep); 1128 return; 1129 } 1130 1131 if (state == LISTEN) { 1132 struct c4iw_listen_ep *lep = (struct c4iw_listen_ep *)ep; 1133 struct socket *listen_so = so, *new_so = NULL; 1134 int error = 0; 1135 1136 SOLISTEN_LOCK(listen_so); 1137 do { 1138 error = solisten_dequeue(listen_so, &new_so, 1139 SOCK_NONBLOCK); 1140 if (error) { 1141 CTR4(KTR_IW_CXGBE, "%s: lep %p listen_so %p " 1142 "error %d", __func__, lep, listen_so, 1143 error); 1144 return; 1145 } 1146 process_newconn(lep, new_so); 1147 1148 /* solisten_dequeue() unlocks while return, so aquire 1149 * lock again for sol_qlen and also for next iteration. 1150 */ 1151 SOLISTEN_LOCK(listen_so); 1152 } while (listen_so->sol_qlen); 1153 SOLISTEN_UNLOCK(listen_so); 1154 1155 return; 1156 } 1157 1158 /* connection error */ 1159 if (so->so_error) { 1160 process_conn_error(ep); 1161 return; 1162 } 1163 1164 /* peer close */ 1165 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state <= CLOSING) { 1166 process_peer_close(ep); 1167 /* 1168 * check whether socket disconnect event is pending before 1169 * returning. Fallthrough if yes. 1170 */ 1171 if (!(so->so_state & SS_ISDISCONNECTED)) 1172 return; 1173 } 1174 1175 /* close complete */ 1176 if (so->so_state & SS_ISDISCONNECTED) { 1177 process_close_complete(ep); 1178 return; 1179 } 1180 1181 /* rx data */ 1182 process_data(ep); 1183 } 1184 1185 SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD, 0, "iw_cxgbe driver parameters"); 1186 1187 static int dack_mode = 0; 1188 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RWTUN, &dack_mode, 0, 1189 "Delayed ack mode (default = 0)"); 1190 1191 int c4iw_max_read_depth = 8; 1192 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RWTUN, &c4iw_max_read_depth, 0, 1193 "Per-connection max ORD/IRD (default = 8)"); 1194 1195 static int enable_tcp_timestamps; 1196 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RWTUN, &enable_tcp_timestamps, 0, 1197 "Enable tcp timestamps (default = 0)"); 1198 1199 static int enable_tcp_sack; 1200 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RWTUN, &enable_tcp_sack, 0, 1201 "Enable tcp SACK (default = 0)"); 1202 1203 static int enable_tcp_window_scaling = 1; 1204 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RWTUN, &enable_tcp_window_scaling, 0, 1205 "Enable tcp window scaling (default = 1)"); 1206 1207 int c4iw_debug = 0; 1208 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RWTUN, &c4iw_debug, 0, 1209 "Enable debug logging (default = 0)"); 1210 1211 static int peer2peer = 1; 1212 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RWTUN, &peer2peer, 0, 1213 "Support peer2peer ULPs (default = 1)"); 1214 1215 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 1216 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RWTUN, &p2p_type, 0, 1217 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)"); 1218 1219 static int ep_timeout_secs = 60; 1220 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RWTUN, &ep_timeout_secs, 0, 1221 "CM Endpoint operation timeout in seconds (default = 60)"); 1222 1223 static int mpa_rev = 1; 1224 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RWTUN, &mpa_rev, 0, 1225 "MPA Revision, 0 supports amso1100, 1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)"); 1226 1227 static int markers_enabled; 1228 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RWTUN, &markers_enabled, 0, 1229 "Enable MPA MARKERS (default(0) = disabled)"); 1230 1231 static int crc_enabled = 1; 1232 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RWTUN, &crc_enabled, 0, 1233 "Enable MPA CRC (default(1) = enabled)"); 1234 1235 static int rcv_win = 256 * 1024; 1236 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RWTUN, &rcv_win, 0, 1237 "TCP receive window in bytes (default = 256KB)"); 1238 1239 static int snd_win = 128 * 1024; 1240 SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RWTUN, &snd_win, 0, 1241 "TCP send window in bytes (default = 128KB)"); 1242 1243 static void 1244 start_ep_timer(struct c4iw_ep *ep) 1245 { 1246 1247 if (timer_pending(&ep->timer)) { 1248 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep); 1249 printk(KERN_ERR "%s timer already started! ep %p\n", __func__, 1250 ep); 1251 return; 1252 } 1253 clear_bit(TIMEOUT, &ep->com.flags); 1254 c4iw_get_ep(&ep->com); 1255 ep->timer.expires = jiffies + ep_timeout_secs * HZ; 1256 ep->timer.data = (unsigned long)ep; 1257 ep->timer.function = ep_timeout; 1258 add_timer(&ep->timer); 1259 } 1260 1261 static int 1262 stop_ep_timer(struct c4iw_ep *ep) 1263 { 1264 1265 del_timer_sync(&ep->timer); 1266 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 1267 c4iw_put_ep(&ep->com); 1268 return 0; 1269 } 1270 return 1; 1271 } 1272 1273 static void * 1274 alloc_ep(int size, gfp_t gfp) 1275 { 1276 struct c4iw_ep_common *epc; 1277 1278 epc = kzalloc(size, gfp); 1279 if (epc == NULL) 1280 return (NULL); 1281 1282 kref_init(&epc->kref); 1283 mutex_init(&epc->mutex); 1284 c4iw_init_wr_wait(&epc->wr_wait); 1285 1286 return (epc); 1287 } 1288 1289 void _c4iw_free_ep(struct kref *kref) 1290 { 1291 struct c4iw_ep *ep; 1292 struct c4iw_ep_common *epc; 1293 1294 ep = container_of(kref, struct c4iw_ep, com.kref); 1295 epc = &ep->com; 1296 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list", 1297 __func__, epc)); 1298 if (test_bit(QP_REFERENCED, &ep->com.flags)) 1299 deref_qp(ep); 1300 CTR4(KTR_IW_CXGBE, "%s: ep %p, history 0x%lx, flags 0x%lx", 1301 __func__, ep, epc->history, epc->flags); 1302 kfree(ep); 1303 } 1304 1305 static void release_ep_resources(struct c4iw_ep *ep) 1306 { 1307 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep); 1308 set_bit(RELEASE_RESOURCES, &ep->com.flags); 1309 c4iw_put_ep(&ep->com); 1310 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep); 1311 } 1312 1313 static int 1314 send_mpa_req(struct c4iw_ep *ep) 1315 { 1316 int mpalen; 1317 struct mpa_message *mpa; 1318 struct mpa_v2_conn_params mpa_v2_params; 1319 struct mbuf *m; 1320 char mpa_rev_to_use = mpa_rev; 1321 int err = 0; 1322 1323 if (ep->retry_with_mpa_v1) 1324 mpa_rev_to_use = 1; 1325 mpalen = sizeof(*mpa) + ep->plen; 1326 if (mpa_rev_to_use == 2) 1327 mpalen += sizeof(struct mpa_v2_conn_params); 1328 1329 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1330 if (mpa == NULL) { 1331 err = -ENOMEM; 1332 CTR3(KTR_IW_CXGBE, "%s:smr1 ep: %p , error: %d", 1333 __func__, ep, err); 1334 goto err; 1335 } 1336 1337 memset(mpa, 0, mpalen); 1338 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 1339 mpa->flags = (crc_enabled ? MPA_CRC : 0) | 1340 (markers_enabled ? MPA_MARKERS : 0) | 1341 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); 1342 mpa->private_data_size = htons(ep->plen); 1343 mpa->revision = mpa_rev_to_use; 1344 1345 if (mpa_rev_to_use == 1) { 1346 ep->tried_with_mpa_v1 = 1; 1347 ep->retry_with_mpa_v1 = 0; 1348 } 1349 1350 if (mpa_rev_to_use == 2) { 1351 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1352 sizeof(struct mpa_v2_conn_params)); 1353 mpa_v2_params.ird = htons((u16)ep->ird); 1354 mpa_v2_params.ord = htons((u16)ep->ord); 1355 1356 if (peer2peer) { 1357 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1358 1359 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1360 mpa_v2_params.ord |= 1361 htons(MPA_V2_RDMA_WRITE_RTR); 1362 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1363 mpa_v2_params.ord |= 1364 htons(MPA_V2_RDMA_READ_RTR); 1365 } 1366 } 1367 memcpy(mpa->private_data, &mpa_v2_params, 1368 sizeof(struct mpa_v2_conn_params)); 1369 1370 if (ep->plen) { 1371 1372 memcpy(mpa->private_data + 1373 sizeof(struct mpa_v2_conn_params), 1374 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1375 } 1376 } else { 1377 1378 if (ep->plen) 1379 memcpy(mpa->private_data, 1380 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1381 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep); 1382 } 1383 1384 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1385 if (m == NULL) { 1386 err = -ENOMEM; 1387 CTR3(KTR_IW_CXGBE, "%s:smr2 ep: %p , error: %d", 1388 __func__, ep, err); 1389 free(mpa, M_CXGBE); 1390 goto err; 1391 } 1392 m_copyback(m, 0, mpalen, (void *)mpa); 1393 free(mpa, M_CXGBE); 1394 1395 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1396 ep->com.thread); 1397 if (err) { 1398 CTR3(KTR_IW_CXGBE, "%s:smr3 ep: %p , error: %d", 1399 __func__, ep, err); 1400 goto err; 1401 } 1402 1403 START_EP_TIMER(ep); 1404 ep->com.state = MPA_REQ_SENT; 1405 ep->mpa_attr.initiator = 1; 1406 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1407 return 0; 1408 err: 1409 connect_reply_upcall(ep, err); 1410 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1411 return err; 1412 } 1413 1414 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 1415 { 1416 int mpalen ; 1417 struct mpa_message *mpa; 1418 struct mpa_v2_conn_params mpa_v2_params; 1419 struct mbuf *m; 1420 int err; 1421 1422 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid, 1423 ep->plen); 1424 1425 mpalen = sizeof(*mpa) + plen; 1426 1427 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1428 1429 mpalen += sizeof(struct mpa_v2_conn_params); 1430 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep, 1431 ep->mpa_attr.version, mpalen); 1432 } 1433 1434 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1435 if (mpa == NULL) 1436 return (-ENOMEM); 1437 1438 memset(mpa, 0, mpalen); 1439 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1440 mpa->flags = MPA_REJECT; 1441 mpa->revision = mpa_rev; 1442 mpa->private_data_size = htons(plen); 1443 1444 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1445 1446 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1447 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1448 sizeof(struct mpa_v2_conn_params)); 1449 mpa_v2_params.ird = htons(((u16)ep->ird) | 1450 (peer2peer ? MPA_V2_PEER2PEER_MODEL : 1451 0)); 1452 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 1453 (p2p_type == 1454 FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 1455 MPA_V2_RDMA_WRITE_RTR : p2p_type == 1456 FW_RI_INIT_P2PTYPE_READ_REQ ? 1457 MPA_V2_RDMA_READ_RTR : 0) : 0)); 1458 memcpy(mpa->private_data, &mpa_v2_params, 1459 sizeof(struct mpa_v2_conn_params)); 1460 1461 if (ep->plen) 1462 memcpy(mpa->private_data + 1463 sizeof(struct mpa_v2_conn_params), pdata, plen); 1464 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep, 1465 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen); 1466 } else 1467 if (plen) 1468 memcpy(mpa->private_data, pdata, plen); 1469 1470 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1471 if (m == NULL) { 1472 free(mpa, M_CXGBE); 1473 return (-ENOMEM); 1474 } 1475 m_copyback(m, 0, mpalen, (void *)mpa); 1476 free(mpa, M_CXGBE); 1477 1478 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread); 1479 if (!err) 1480 ep->snd_seq += mpalen; 1481 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err); 1482 return err; 1483 } 1484 1485 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 1486 { 1487 int mpalen; 1488 struct mpa_message *mpa; 1489 struct mbuf *m; 1490 struct mpa_v2_conn_params mpa_v2_params; 1491 int err; 1492 1493 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep); 1494 1495 mpalen = sizeof(*mpa) + plen; 1496 1497 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1498 1499 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep, 1500 ep->mpa_attr.version); 1501 mpalen += sizeof(struct mpa_v2_conn_params); 1502 } 1503 1504 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1505 if (mpa == NULL) 1506 return (-ENOMEM); 1507 1508 memset(mpa, 0, sizeof(*mpa)); 1509 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1510 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 1511 (markers_enabled ? MPA_MARKERS : 0); 1512 mpa->revision = ep->mpa_attr.version; 1513 mpa->private_data_size = htons(plen); 1514 1515 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1516 1517 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1518 mpa->private_data_size += 1519 htons(sizeof(struct mpa_v2_conn_params)); 1520 mpa_v2_params.ird = htons((u16)ep->ird); 1521 mpa_v2_params.ord = htons((u16)ep->ord); 1522 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep, 1523 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord); 1524 1525 if (peer2peer && (ep->mpa_attr.p2p_type != 1526 FW_RI_INIT_P2PTYPE_DISABLED)) { 1527 1528 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1529 1530 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1531 1532 mpa_v2_params.ord |= 1533 htons(MPA_V2_RDMA_WRITE_RTR); 1534 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d", 1535 __func__, ep, p2p_type, mpa_v2_params.ird, 1536 mpa_v2_params.ord); 1537 } 1538 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1539 1540 mpa_v2_params.ord |= 1541 htons(MPA_V2_RDMA_READ_RTR); 1542 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d", 1543 __func__, ep, p2p_type, mpa_v2_params.ird, 1544 mpa_v2_params.ord); 1545 } 1546 } 1547 1548 memcpy(mpa->private_data, &mpa_v2_params, 1549 sizeof(struct mpa_v2_conn_params)); 1550 1551 if (ep->plen) 1552 memcpy(mpa->private_data + 1553 sizeof(struct mpa_v2_conn_params), pdata, plen); 1554 } else 1555 if (plen) 1556 memcpy(mpa->private_data, pdata, plen); 1557 1558 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1559 if (m == NULL) { 1560 free(mpa, M_CXGBE); 1561 return (-ENOMEM); 1562 } 1563 m_copyback(m, 0, mpalen, (void *)mpa); 1564 free(mpa, M_CXGBE); 1565 1566 1567 ep->com.state = MPA_REP_SENT; 1568 ep->snd_seq += mpalen; 1569 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1570 ep->com.thread); 1571 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err); 1572 return err; 1573 } 1574 1575 1576 1577 static void close_complete_upcall(struct c4iw_ep *ep, int status) 1578 { 1579 struct iw_cm_event event; 1580 1581 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep); 1582 memset(&event, 0, sizeof(event)); 1583 event.event = IW_CM_EVENT_CLOSE; 1584 event.status = status; 1585 1586 if (ep->com.cm_id) { 1587 1588 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep); 1589 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1590 deref_cm_id(&ep->com); 1591 set_bit(CLOSE_UPCALL, &ep->com.history); 1592 } 1593 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep); 1594 } 1595 1596 static int 1597 send_abort(struct c4iw_ep *ep) 1598 { 1599 struct socket *so = ep->com.so; 1600 struct sockopt sopt; 1601 int rc; 1602 struct linger l; 1603 1604 CTR5(KTR_IW_CXGBE, "%s ep %p so %p state %s tid %d", __func__, ep, so, 1605 states[ep->com.state], ep->hwtid); 1606 1607 l.l_onoff = 1; 1608 l.l_linger = 0; 1609 1610 /* linger_time of 0 forces RST to be sent */ 1611 sopt.sopt_dir = SOPT_SET; 1612 sopt.sopt_level = SOL_SOCKET; 1613 sopt.sopt_name = SO_LINGER; 1614 sopt.sopt_val = (caddr_t)&l; 1615 sopt.sopt_valsize = sizeof l; 1616 sopt.sopt_td = NULL; 1617 rc = sosetopt(so, &sopt); 1618 if (rc != 0) { 1619 log(LOG_ERR, "%s: sosetopt(%p, linger = 0) failed with %d.\n", 1620 __func__, so, rc); 1621 } 1622 1623 uninit_iwarp_socket(so); 1624 soclose(so); 1625 set_bit(ABORT_CONN, &ep->com.history); 1626 1627 /* 1628 * TBD: iw_cxgbe driver should receive ABORT reply for every ABORT 1629 * request it has sent. But the current TOE driver is not propagating 1630 * this ABORT reply event (via do_abort_rpl) to iw_cxgbe. So as a work- 1631 * around de-refererece 'ep' here instead of doing it in abort_rpl() 1632 * handler(not yet implemented) of iw_cxgbe driver. 1633 */ 1634 release_ep_resources(ep); 1635 1636 return (0); 1637 } 1638 1639 static void peer_close_upcall(struct c4iw_ep *ep) 1640 { 1641 struct iw_cm_event event; 1642 1643 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep); 1644 memset(&event, 0, sizeof(event)); 1645 event.event = IW_CM_EVENT_DISCONNECT; 1646 1647 if (ep->com.cm_id) { 1648 1649 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep); 1650 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1651 set_bit(DISCONN_UPCALL, &ep->com.history); 1652 } 1653 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep); 1654 } 1655 1656 static void peer_abort_upcall(struct c4iw_ep *ep) 1657 { 1658 struct iw_cm_event event; 1659 1660 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep); 1661 memset(&event, 0, sizeof(event)); 1662 event.event = IW_CM_EVENT_CLOSE; 1663 event.status = -ECONNRESET; 1664 1665 if (ep->com.cm_id) { 1666 1667 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep); 1668 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1669 deref_cm_id(&ep->com); 1670 set_bit(ABORT_UPCALL, &ep->com.history); 1671 } 1672 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep); 1673 } 1674 1675 static void connect_reply_upcall(struct c4iw_ep *ep, int status) 1676 { 1677 struct iw_cm_event event; 1678 1679 CTR3(KTR_IW_CXGBE, "%s:cruB %p, status: %d", __func__, ep, status); 1680 memset(&event, 0, sizeof(event)); 1681 event.event = IW_CM_EVENT_CONNECT_REPLY; 1682 event.status = ((status == -ECONNABORTED) || (status == -EPIPE)) ? 1683 -ECONNRESET : status; 1684 event.local_addr = ep->com.local_addr; 1685 event.remote_addr = ep->com.remote_addr; 1686 1687 if ((status == 0) || (status == -ECONNREFUSED)) { 1688 1689 if (!ep->tried_with_mpa_v1) { 1690 1691 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep); 1692 /* this means MPA_v2 is used */ 1693 event.ord = ep->ird; 1694 event.ird = ep->ord; 1695 event.private_data_len = ep->plen - 1696 sizeof(struct mpa_v2_conn_params); 1697 event.private_data = ep->mpa_pkt + 1698 sizeof(struct mpa_message) + 1699 sizeof(struct mpa_v2_conn_params); 1700 } else { 1701 1702 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep); 1703 /* this means MPA_v1 is used */ 1704 event.ord = c4iw_max_read_depth; 1705 event.ird = c4iw_max_read_depth; 1706 event.private_data_len = ep->plen; 1707 event.private_data = ep->mpa_pkt + 1708 sizeof(struct mpa_message); 1709 } 1710 } 1711 1712 if (ep->com.cm_id) { 1713 1714 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep); 1715 set_bit(CONN_RPL_UPCALL, &ep->com.history); 1716 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1717 } 1718 1719 if(status == -ECONNABORTED) { 1720 1721 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status); 1722 return; 1723 } 1724 1725 if (status < 0) { 1726 1727 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status); 1728 deref_cm_id(&ep->com); 1729 } 1730 1731 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep); 1732 } 1733 1734 static int connect_request_upcall(struct c4iw_ep *ep) 1735 { 1736 struct iw_cm_event event; 1737 int ret; 1738 1739 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep, 1740 ep->tried_with_mpa_v1); 1741 1742 memset(&event, 0, sizeof(event)); 1743 event.event = IW_CM_EVENT_CONNECT_REQUEST; 1744 event.local_addr = ep->com.local_addr; 1745 event.remote_addr = ep->com.remote_addr; 1746 event.provider_data = ep; 1747 1748 if (!ep->tried_with_mpa_v1) { 1749 /* this means MPA_v2 is used */ 1750 event.ord = ep->ord; 1751 event.ird = ep->ird; 1752 event.private_data_len = ep->plen - 1753 sizeof(struct mpa_v2_conn_params); 1754 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 1755 sizeof(struct mpa_v2_conn_params); 1756 } else { 1757 1758 /* this means MPA_v1 is used. Send max supported */ 1759 event.ord = c4iw_max_read_depth; 1760 event.ird = c4iw_max_read_depth; 1761 event.private_data_len = ep->plen; 1762 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 1763 } 1764 1765 c4iw_get_ep(&ep->com); 1766 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, 1767 &event); 1768 if(ret) { 1769 CTR3(KTR_IW_CXGBE, "%s: ep %p, Failure while notifying event to" 1770 " IWCM, err:%d", __func__, ep, ret); 1771 c4iw_put_ep(&ep->com); 1772 } else 1773 /* Dereference parent_ep only in success case. 1774 * In case of failure, parent_ep is dereferenced by the caller 1775 * of process_mpa_request(). 1776 */ 1777 c4iw_put_ep(&ep->parent_ep->com); 1778 1779 set_bit(CONNREQ_UPCALL, &ep->com.history); 1780 return ret; 1781 } 1782 1783 static void established_upcall(struct c4iw_ep *ep) 1784 { 1785 struct iw_cm_event event; 1786 1787 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep); 1788 memset(&event, 0, sizeof(event)); 1789 event.event = IW_CM_EVENT_ESTABLISHED; 1790 event.ird = ep->ord; 1791 event.ord = ep->ird; 1792 1793 if (ep->com.cm_id) { 1794 1795 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep); 1796 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1797 set_bit(ESTAB_UPCALL, &ep->com.history); 1798 } 1799 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep); 1800 } 1801 1802 1803 #define RELAXED_IRD_NEGOTIATION 1 1804 1805 /* 1806 * process_mpa_reply - process streaming mode MPA reply 1807 * 1808 * Returns: 1809 * 1810 * 0 upon success indicating a connect request was delivered to the ULP 1811 * or the mpa request is incomplete but valid so far. 1812 * 1813 * 1 if a failure requires the caller to close the connection. 1814 * 1815 * 2 if a failure requires the caller to abort the connection. 1816 */ 1817 static int process_mpa_reply(struct c4iw_ep *ep) 1818 { 1819 struct mpa_message *mpa; 1820 struct mpa_v2_conn_params *mpa_v2_params; 1821 u16 plen; 1822 u16 resp_ird, resp_ord; 1823 u8 rtr_mismatch = 0, insuff_ird = 0; 1824 struct c4iw_qp_attributes attrs = {0}; 1825 enum c4iw_qp_attr_mask mask; 1826 int err; 1827 struct mbuf *top, *m; 1828 int flags = MSG_DONTWAIT; 1829 struct uio uio; 1830 int disconnect = 0; 1831 1832 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep); 1833 1834 /* 1835 * Stop mpa timer. If it expired, then 1836 * we ignore the MPA reply. process_timeout() 1837 * will abort the connection. 1838 */ 1839 if (STOP_EP_TIMER(ep)) 1840 return 0; 1841 1842 uio.uio_resid = 1000000; 1843 uio.uio_td = ep->com.thread; 1844 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags); 1845 1846 if (err) { 1847 1848 if (err == EWOULDBLOCK) { 1849 1850 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep); 1851 START_EP_TIMER(ep); 1852 return 0; 1853 } 1854 err = -err; 1855 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep); 1856 goto err; 1857 } 1858 1859 if (ep->com.so->so_rcv.sb_mb) { 1860 1861 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep); 1862 printf("%s data after soreceive called! so %p sb_mb %p top %p\n", 1863 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top); 1864 } 1865 1866 m = top; 1867 1868 do { 1869 1870 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep); 1871 /* 1872 * If we get more than the supported amount of private data 1873 * then we must fail this connection. 1874 */ 1875 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) { 1876 1877 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep, 1878 ep->mpa_pkt_len + m->m_len); 1879 err = (-EINVAL); 1880 goto err_stop_timer; 1881 } 1882 1883 /* 1884 * copy the new data into our accumulation buffer. 1885 */ 1886 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len])); 1887 ep->mpa_pkt_len += m->m_len; 1888 if (!m->m_next) 1889 m = m->m_nextpkt; 1890 else 1891 m = m->m_next; 1892 } while (m); 1893 1894 m_freem(top); 1895 /* 1896 * if we don't even have the mpa message, then bail. 1897 */ 1898 if (ep->mpa_pkt_len < sizeof(*mpa)) { 1899 return 0; 1900 } 1901 mpa = (struct mpa_message *) ep->mpa_pkt; 1902 1903 /* Validate MPA header. */ 1904 if (mpa->revision > mpa_rev) { 1905 1906 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep, 1907 mpa->revision, mpa_rev); 1908 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, " 1909 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1910 err = -EPROTO; 1911 goto err_stop_timer; 1912 } 1913 1914 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1915 1916 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep); 1917 err = -EPROTO; 1918 goto err_stop_timer; 1919 } 1920 1921 plen = ntohs(mpa->private_data_size); 1922 1923 /* 1924 * Fail if there's too much private data. 1925 */ 1926 if (plen > MPA_MAX_PRIVATE_DATA) { 1927 1928 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep); 1929 err = -EPROTO; 1930 goto err_stop_timer; 1931 } 1932 1933 /* 1934 * If plen does not account for pkt size 1935 */ 1936 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1937 1938 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep); 1939 STOP_EP_TIMER(ep); 1940 err = -EPROTO; 1941 goto err_stop_timer; 1942 } 1943 1944 ep->plen = (u8) plen; 1945 1946 /* 1947 * If we don't have all the pdata yet, then bail. 1948 * We'll continue process when more data arrives. 1949 */ 1950 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) { 1951 1952 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep); 1953 return 0; 1954 } 1955 1956 if (mpa->flags & MPA_REJECT) { 1957 1958 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep); 1959 err = -ECONNREFUSED; 1960 goto err_stop_timer; 1961 } 1962 1963 /* 1964 * If we get here we have accumulated the entire mpa 1965 * start reply message including private data. And 1966 * the MPA header is valid. 1967 */ 1968 ep->com.state = FPDU_MODE; 1969 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 1970 ep->mpa_attr.recv_marker_enabled = markers_enabled; 1971 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 1972 ep->mpa_attr.version = mpa->revision; 1973 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1974 1975 if (mpa->revision == 2) { 1976 1977 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep); 1978 ep->mpa_attr.enhanced_rdma_conn = 1979 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 1980 1981 if (ep->mpa_attr.enhanced_rdma_conn) { 1982 1983 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep); 1984 mpa_v2_params = (struct mpa_v2_conn_params *) 1985 (ep->mpa_pkt + sizeof(*mpa)); 1986 resp_ird = ntohs(mpa_v2_params->ird) & 1987 MPA_V2_IRD_ORD_MASK; 1988 resp_ord = ntohs(mpa_v2_params->ord) & 1989 MPA_V2_IRD_ORD_MASK; 1990 1991 /* 1992 * This is a double-check. Ideally, below checks are 1993 * not required since ird/ord stuff has been taken 1994 * care of in c4iw_accept_cr 1995 */ 1996 if (ep->ird < resp_ord) { 1997 if (RELAXED_IRD_NEGOTIATION && resp_ord <= 1998 ep->com.dev->rdev.adap->params.max_ordird_qp) 1999 ep->ird = resp_ord; 2000 else 2001 insuff_ird = 1; 2002 } else if (ep->ird > resp_ord) { 2003 ep->ird = resp_ord; 2004 } 2005 if (ep->ord > resp_ird) { 2006 if (RELAXED_IRD_NEGOTIATION) 2007 ep->ord = resp_ird; 2008 else 2009 insuff_ird = 1; 2010 } 2011 if (insuff_ird) { 2012 err = -ENOMEM; 2013 ep->ird = resp_ord; 2014 ep->ord = resp_ird; 2015 } 2016 2017 if (ntohs(mpa_v2_params->ird) & 2018 MPA_V2_PEER2PEER_MODEL) { 2019 2020 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep); 2021 if (ntohs(mpa_v2_params->ord) & 2022 MPA_V2_RDMA_WRITE_RTR) { 2023 2024 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep); 2025 ep->mpa_attr.p2p_type = 2026 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2027 } 2028 else if (ntohs(mpa_v2_params->ord) & 2029 MPA_V2_RDMA_READ_RTR) { 2030 2031 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep); 2032 ep->mpa_attr.p2p_type = 2033 FW_RI_INIT_P2PTYPE_READ_REQ; 2034 } 2035 } 2036 } 2037 } else { 2038 2039 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep); 2040 2041 if (mpa->revision == 1) { 2042 2043 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep); 2044 2045 if (peer2peer) { 2046 2047 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep); 2048 ep->mpa_attr.p2p_type = p2p_type; 2049 } 2050 } 2051 } 2052 2053 if (set_tcpinfo(ep)) { 2054 2055 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep); 2056 printf("%s set_tcpinfo error\n", __func__); 2057 err = -ECONNRESET; 2058 goto err; 2059 } 2060 2061 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, " 2062 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__, 2063 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2064 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 2065 ep->mpa_attr.p2p_type); 2066 2067 /* 2068 * If responder's RTR does not match with that of initiator, assign 2069 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 2070 * generated when moving QP to RTS state. 2071 * A TERM message will be sent after QP has moved to RTS state 2072 */ 2073 if ((ep->mpa_attr.version == 2) && peer2peer && 2074 (ep->mpa_attr.p2p_type != p2p_type)) { 2075 2076 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep); 2077 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2078 rtr_mismatch = 1; 2079 } 2080 2081 2082 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2083 attrs.mpa_attr = ep->mpa_attr; 2084 attrs.max_ird = ep->ird; 2085 attrs.max_ord = ep->ord; 2086 attrs.llp_stream_handle = ep; 2087 attrs.next_state = C4IW_QP_STATE_RTS; 2088 2089 mask = C4IW_QP_ATTR_NEXT_STATE | 2090 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 2091 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 2092 2093 /* bind QP and TID with INIT_WR */ 2094 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2095 2096 if (err) { 2097 2098 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep); 2099 goto err; 2100 } 2101 2102 /* 2103 * If responder's RTR requirement did not match with what initiator 2104 * supports, generate TERM message 2105 */ 2106 if (rtr_mismatch) { 2107 2108 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep); 2109 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 2110 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2111 attrs.ecode = MPA_NOMATCH_RTR; 2112 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2113 attrs.send_term = 1; 2114 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2115 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2116 err = -ENOMEM; 2117 disconnect = 1; 2118 goto out; 2119 } 2120 2121 /* 2122 * Generate TERM if initiator IRD is not sufficient for responder 2123 * provided ORD. Currently, we do the same behaviour even when 2124 * responder provided IRD is also not sufficient as regards to 2125 * initiator ORD. 2126 */ 2127 if (insuff_ird) { 2128 2129 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep); 2130 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 2131 __func__); 2132 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2133 attrs.ecode = MPA_INSUFF_IRD; 2134 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2135 attrs.send_term = 1; 2136 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2137 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2138 err = -ENOMEM; 2139 disconnect = 1; 2140 goto out; 2141 } 2142 goto out; 2143 err_stop_timer: 2144 STOP_EP_TIMER(ep); 2145 err: 2146 disconnect = 2; 2147 out: 2148 connect_reply_upcall(ep, err); 2149 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep); 2150 return disconnect; 2151 } 2152 2153 /* 2154 * process_mpa_request - process streaming mode MPA request 2155 * 2156 * Returns: 2157 * 2158 * 0 upon success indicating a connect request was delivered to the ULP 2159 * or the mpa request is incomplete but valid so far. 2160 * 2161 * 1 if a failure requires the caller to close the connection. 2162 * 2163 * 2 if a failure requires the caller to abort the connection. 2164 */ 2165 static int 2166 process_mpa_request(struct c4iw_ep *ep) 2167 { 2168 struct mpa_message *mpa; 2169 struct mpa_v2_conn_params *mpa_v2_params; 2170 u16 plen; 2171 int flags = MSG_DONTWAIT; 2172 int rc; 2173 struct iovec iov; 2174 struct uio uio; 2175 enum c4iw_ep_state state = ep->com.state; 2176 2177 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]); 2178 2179 if (state != MPA_REQ_WAIT) 2180 return 0; 2181 2182 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len]; 2183 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2184 uio.uio_iov = &iov; 2185 uio.uio_iovcnt = 1; 2186 uio.uio_offset = 0; 2187 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2188 uio.uio_segflg = UIO_SYSSPACE; 2189 uio.uio_rw = UIO_READ; 2190 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */ 2191 2192 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags); 2193 if (rc == EAGAIN) 2194 return 0; 2195 else if (rc) 2196 goto err_stop_timer; 2197 2198 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data", 2199 __func__, ep->com.so)); 2200 ep->mpa_pkt_len += uio.uio_offset; 2201 2202 /* 2203 * If we get more than the supported amount of private data then we must 2204 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another 2205 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last 2206 * byte is filled by the soreceive above. 2207 */ 2208 2209 /* Don't even have the MPA message. Wait for more data to arrive. */ 2210 if (ep->mpa_pkt_len < sizeof(*mpa)) 2211 return 0; 2212 mpa = (struct mpa_message *) ep->mpa_pkt; 2213 2214 /* 2215 * Validate MPA Header. 2216 */ 2217 if (mpa->revision > mpa_rev) { 2218 log(LOG_ERR, "%s: MPA version mismatch. Local = %d," 2219 " Received = %d\n", __func__, mpa_rev, mpa->revision); 2220 goto err_stop_timer; 2221 } 2222 2223 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) 2224 goto err_stop_timer; 2225 2226 /* 2227 * Fail if there's too much private data. 2228 */ 2229 plen = ntohs(mpa->private_data_size); 2230 if (plen > MPA_MAX_PRIVATE_DATA) 2231 goto err_stop_timer; 2232 2233 /* 2234 * If plen does not account for pkt size 2235 */ 2236 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) 2237 goto err_stop_timer; 2238 2239 ep->plen = (u8) plen; 2240 2241 /* 2242 * If we don't have all the pdata yet, then bail. 2243 */ 2244 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 2245 return 0; 2246 2247 /* 2248 * If we get here we have accumulated the entire mpa 2249 * start reply message including private data. 2250 */ 2251 ep->mpa_attr.initiator = 0; 2252 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2253 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2254 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2255 ep->mpa_attr.version = mpa->revision; 2256 if (mpa->revision == 1) 2257 ep->tried_with_mpa_v1 = 1; 2258 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2259 2260 if (mpa->revision == 2) { 2261 ep->mpa_attr.enhanced_rdma_conn = 2262 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2263 if (ep->mpa_attr.enhanced_rdma_conn) { 2264 mpa_v2_params = (struct mpa_v2_conn_params *) 2265 (ep->mpa_pkt + sizeof(*mpa)); 2266 ep->ird = ntohs(mpa_v2_params->ird) & 2267 MPA_V2_IRD_ORD_MASK; 2268 ep->ird = min_t(u32, ep->ird, 2269 cur_max_read_depth(ep->com.dev)); 2270 ep->ord = ntohs(mpa_v2_params->ord) & 2271 MPA_V2_IRD_ORD_MASK; 2272 ep->ord = min_t(u32, ep->ord, 2273 cur_max_read_depth(ep->com.dev)); 2274 CTR3(KTR_IW_CXGBE, "%s initiator ird %u ord %u\n", 2275 __func__, ep->ird, ep->ord); 2276 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) 2277 if (peer2peer) { 2278 if (ntohs(mpa_v2_params->ord) & 2279 MPA_V2_RDMA_WRITE_RTR) 2280 ep->mpa_attr.p2p_type = 2281 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2282 else if (ntohs(mpa_v2_params->ord) & 2283 MPA_V2_RDMA_READ_RTR) 2284 ep->mpa_attr.p2p_type = 2285 FW_RI_INIT_P2PTYPE_READ_REQ; 2286 } 2287 } 2288 } else if (mpa->revision == 1 && peer2peer) 2289 ep->mpa_attr.p2p_type = p2p_type; 2290 2291 if (set_tcpinfo(ep)) 2292 goto err_stop_timer; 2293 2294 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, " 2295 "xmit_marker_enabled = %d, version = %d", __func__, 2296 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2297 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); 2298 2299 ep->com.state = MPA_REQ_RCVD; 2300 STOP_EP_TIMER(ep); 2301 2302 /* drive upcall */ 2303 if (ep->parent_ep->com.state != DEAD) 2304 if (connect_request_upcall(ep)) 2305 goto err_out; 2306 return 0; 2307 2308 err_stop_timer: 2309 STOP_EP_TIMER(ep); 2310 err_out: 2311 return 2; 2312 } 2313 2314 /* 2315 * Upcall from the adapter indicating data has been transmitted. 2316 * For us its just the single MPA request or reply. We can now free 2317 * the skb holding the mpa message. 2318 */ 2319 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 2320 { 2321 int err; 2322 struct c4iw_ep *ep = to_ep(cm_id); 2323 int abort = 0; 2324 2325 mutex_lock(&ep->com.mutex); 2326 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep); 2327 2328 if ((ep->com.state == DEAD) || 2329 (ep->com.state != MPA_REQ_RCVD)) { 2330 2331 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep); 2332 mutex_unlock(&ep->com.mutex); 2333 c4iw_put_ep(&ep->com); 2334 return -ECONNRESET; 2335 } 2336 set_bit(ULP_REJECT, &ep->com.history); 2337 2338 if (mpa_rev == 0) { 2339 2340 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep); 2341 abort = 1; 2342 } 2343 else { 2344 2345 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep); 2346 abort = send_mpa_reject(ep, pdata, pdata_len); 2347 } 2348 STOP_EP_TIMER(ep); 2349 err = c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2350 mutex_unlock(&ep->com.mutex); 2351 c4iw_put_ep(&ep->com); 2352 CTR3(KTR_IW_CXGBE, "%s:crc4 %p, err: %d", __func__, ep, err); 2353 return 0; 2354 } 2355 2356 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2357 { 2358 int err; 2359 struct c4iw_qp_attributes attrs = {0}; 2360 enum c4iw_qp_attr_mask mask; 2361 struct c4iw_ep *ep = to_ep(cm_id); 2362 struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 2363 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 2364 int abort = 0; 2365 2366 mutex_lock(&ep->com.mutex); 2367 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep); 2368 2369 if ((ep->com.state == DEAD) || 2370 (ep->com.state != MPA_REQ_RCVD)) { 2371 2372 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep); 2373 err = -ECONNRESET; 2374 goto err_out; 2375 } 2376 2377 BUG_ON(!qp); 2378 2379 set_bit(ULP_ACCEPT, &ep->com.history); 2380 2381 if ((conn_param->ord > c4iw_max_read_depth) || 2382 (conn_param->ird > c4iw_max_read_depth)) { 2383 2384 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep); 2385 err = -EINVAL; 2386 goto err_abort; 2387 } 2388 2389 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 2390 2391 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep); 2392 2393 if (conn_param->ord > ep->ird) { 2394 if (RELAXED_IRD_NEGOTIATION) { 2395 conn_param->ord = ep->ird; 2396 } else { 2397 ep->ird = conn_param->ird; 2398 ep->ord = conn_param->ord; 2399 send_mpa_reject(ep, conn_param->private_data, 2400 conn_param->private_data_len); 2401 err = -ENOMEM; 2402 goto err_abort; 2403 } 2404 } 2405 if (conn_param->ird < ep->ord) { 2406 if (RELAXED_IRD_NEGOTIATION && 2407 ep->ord <= h->rdev.adap->params.max_ordird_qp) { 2408 conn_param->ird = ep->ord; 2409 } else { 2410 err = -ENOMEM; 2411 goto err_abort; 2412 } 2413 } 2414 } 2415 ep->ird = conn_param->ird; 2416 ep->ord = conn_param->ord; 2417 2418 if (ep->mpa_attr.version == 1) { 2419 if (peer2peer && ep->ird == 0) 2420 ep->ird = 1; 2421 } else { 2422 if (peer2peer && 2423 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) && 2424 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0) 2425 ep->ird = 1; 2426 } 2427 2428 CTR4(KTR_IW_CXGBE, "%s %d ird %d ord %d\n", __func__, __LINE__, 2429 ep->ird, ep->ord); 2430 2431 ep->com.cm_id = cm_id; 2432 ref_cm_id(&ep->com); 2433 ep->com.qp = qp; 2434 ref_qp(ep); 2435 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2436 2437 /* bind QP to EP and move to RTS */ 2438 attrs.mpa_attr = ep->mpa_attr; 2439 attrs.max_ird = ep->ird; 2440 attrs.max_ord = ep->ord; 2441 attrs.llp_stream_handle = ep; 2442 attrs.next_state = C4IW_QP_STATE_RTS; 2443 2444 /* bind QP and TID with INIT_WR */ 2445 mask = C4IW_QP_ATTR_NEXT_STATE | 2446 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 2447 C4IW_QP_ATTR_MPA_ATTR | 2448 C4IW_QP_ATTR_MAX_IRD | 2449 C4IW_QP_ATTR_MAX_ORD; 2450 2451 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2452 if (err) { 2453 CTR3(KTR_IW_CXGBE, "%s:caca %p, err: %d", __func__, ep, err); 2454 goto err_defef_cm_id; 2455 } 2456 2457 err = send_mpa_reply(ep, conn_param->private_data, 2458 conn_param->private_data_len); 2459 if (err) { 2460 CTR3(KTR_IW_CXGBE, "%s:cacb %p, err: %d", __func__, ep, err); 2461 goto err_defef_cm_id; 2462 } 2463 2464 ep->com.state = FPDU_MODE; 2465 established_upcall(ep); 2466 mutex_unlock(&ep->com.mutex); 2467 c4iw_put_ep(&ep->com); 2468 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep); 2469 return 0; 2470 err_defef_cm_id: 2471 deref_cm_id(&ep->com); 2472 err_abort: 2473 abort = 1; 2474 err_out: 2475 if (abort) 2476 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 2477 mutex_unlock(&ep->com.mutex); 2478 c4iw_put_ep(&ep->com); 2479 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep); 2480 return err; 2481 } 2482 2483 static int 2484 c4iw_sock_create(struct sockaddr_storage *laddr, struct socket **so) 2485 { 2486 int ret; 2487 int size; 2488 struct socket *sock = NULL; 2489 2490 ret = sock_create_kern(laddr->ss_family, 2491 SOCK_STREAM, IPPROTO_TCP, &sock); 2492 if (ret) { 2493 CTR2(KTR_IW_CXGBE, "%s:Failed to create TCP socket. err %d", 2494 __func__, ret); 2495 return ret; 2496 } 2497 2498 ret = sobind(sock, (struct sockaddr *)laddr, curthread); 2499 if (ret) { 2500 CTR2(KTR_IW_CXGBE, "%s:Failed to bind socket. err %p", 2501 __func__, ret); 2502 sock_release(sock); 2503 return ret; 2504 } 2505 2506 size = laddr->ss_family == AF_INET6 ? 2507 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 2508 ret = sock_getname(sock, (struct sockaddr *)laddr, &size, 0); 2509 if (ret) { 2510 CTR2(KTR_IW_CXGBE, "%s:sock_getname failed. err %p", 2511 __func__, ret); 2512 sock_release(sock); 2513 return ret; 2514 } 2515 2516 *so = sock; 2517 return 0; 2518 } 2519 2520 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2521 { 2522 int err = 0; 2523 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2524 struct c4iw_ep *ep = NULL; 2525 struct ifnet *nh_ifp; /* Logical egress interface */ 2526 2527 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id); 2528 2529 2530 if ((conn_param->ord > c4iw_max_read_depth) || 2531 (conn_param->ird > c4iw_max_read_depth)) { 2532 2533 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id); 2534 err = -EINVAL; 2535 goto out; 2536 } 2537 ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2538 2539 init_timer(&ep->timer); 2540 ep->plen = conn_param->private_data_len; 2541 2542 if (ep->plen) { 2543 2544 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep); 2545 memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 2546 conn_param->private_data, ep->plen); 2547 } 2548 ep->ird = conn_param->ird; 2549 ep->ord = conn_param->ord; 2550 2551 if (peer2peer && ep->ord == 0) { 2552 2553 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep); 2554 ep->ord = 1; 2555 } 2556 2557 ep->com.dev = dev; 2558 ep->com.cm_id = cm_id; 2559 ref_cm_id(&ep->com); 2560 ep->com.qp = get_qhp(dev, conn_param->qpn); 2561 2562 if (!ep->com.qp) { 2563 2564 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep); 2565 err = -EINVAL; 2566 goto fail; 2567 } 2568 ref_qp(ep); 2569 ep->com.thread = curthread; 2570 2571 err = get_ifnet_from_raddr(&cm_id->remote_addr, &nh_ifp); 2572 if (err) { 2573 2574 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep); 2575 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 2576 err = EHOSTUNREACH; 2577 return err; 2578 } 2579 2580 if (!(nh_ifp->if_capenable & IFCAP_TOE) || 2581 TOEDEV(nh_ifp) == NULL) { 2582 err = -ENOPROTOOPT; 2583 goto fail; 2584 } 2585 ep->com.state = CONNECTING; 2586 ep->tos = 0; 2587 ep->com.local_addr = cm_id->local_addr; 2588 ep->com.remote_addr = cm_id->remote_addr; 2589 2590 err = c4iw_sock_create(&cm_id->local_addr, &ep->com.so); 2591 if (err) 2592 goto fail; 2593 2594 setiwsockopt(ep->com.so); 2595 err = -soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr, 2596 ep->com.thread); 2597 if (!err) { 2598 init_iwarp_socket(ep->com.so, &ep->com); 2599 goto out; 2600 } else 2601 goto fail_free_so; 2602 2603 fail_free_so: 2604 sock_release(ep->com.so); 2605 fail: 2606 deref_cm_id(&ep->com); 2607 c4iw_put_ep(&ep->com); 2608 ep = NULL; 2609 out: 2610 CTR2(KTR_IW_CXGBE, "%s:ccE ret:%d", __func__, err); 2611 return err; 2612 } 2613 2614 /* 2615 * iwcm->create_listen. Returns -errno on failure. 2616 */ 2617 int 2618 c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 2619 { 2620 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2621 struct c4iw_listen_ep *lep = NULL; 2622 struct listen_port_info *port_info = NULL; 2623 int rc = 0; 2624 2625 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, backlog %s", __func__, cm_id, 2626 backlog); 2627 lep = alloc_ep(sizeof(*lep), GFP_KERNEL); 2628 lep->com.cm_id = cm_id; 2629 ref_cm_id(&lep->com); 2630 lep->com.dev = dev; 2631 lep->backlog = backlog; 2632 lep->com.local_addr = cm_id->local_addr; 2633 lep->com.thread = curthread; 2634 cm_id->provider_data = lep; 2635 lep->com.state = LISTEN; 2636 2637 /* In case of INDADDR_ANY, ibcore creates cmid for each device and 2638 * invokes iw_cxgbe listener callbacks assuming that iw_cxgbe creates 2639 * HW listeners for each device seperately. But toecore expects single 2640 * solisten() call with INADDR_ANY address to create HW listeners on 2641 * all devices for a given port number. So iw_cxgbe driver calls 2642 * solisten() only once for INADDR_ANY(usually done at first time 2643 * listener callback from ibcore). And all the subsequent INADDR_ANY 2644 * listener callbacks from ibcore(for the same port address) do not 2645 * invoke solisten() as first listener callback has already created 2646 * listeners for all other devices(via solisten). 2647 */ 2648 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr)) { 2649 port_info = add_ep_to_listenlist(lep); 2650 /* skip solisten() if refcnt > 1, as the listeners were 2651 * alredy created by 'Master lep' 2652 */ 2653 if (port_info->refcnt > 1) { 2654 /* As there will be only one listener socket for a TCP 2655 * port, copy Master lep's socket pointer to other lep's 2656 * that are belonging to same TCP port. 2657 */ 2658 struct c4iw_listen_ep *head_lep = 2659 container_of(port_info->lep_list.next, 2660 struct c4iw_listen_ep, listen_ep_list); 2661 lep->com.so = head_lep->com.so; 2662 goto out; 2663 } 2664 } 2665 rc = c4iw_sock_create(&cm_id->local_addr, &lep->com.so); 2666 if (rc) { 2667 CTR2(KTR_IW_CXGBE, "%s:Failed to create socket. err %d", 2668 __func__, rc); 2669 goto fail; 2670 } 2671 2672 rc = solisten(lep->com.so, backlog, curthread); 2673 if (rc) { 2674 CTR3(KTR_IW_CXGBE, "%s:Failed to listen on sock:%p. err %d", 2675 __func__, lep->com.so, rc); 2676 goto fail_free_so; 2677 } 2678 init_iwarp_socket(lep->com.so, &lep->com); 2679 out: 2680 return 0; 2681 2682 fail_free_so: 2683 sock_release(lep->com.so); 2684 fail: 2685 if (port_info) 2686 rem_ep_from_listenlist(lep); 2687 deref_cm_id(&lep->com); 2688 c4iw_put_ep(&lep->com); 2689 return rc; 2690 } 2691 2692 int 2693 c4iw_destroy_listen(struct iw_cm_id *cm_id) 2694 { 2695 struct c4iw_listen_ep *lep = to_listen_ep(cm_id); 2696 2697 mutex_lock(&lep->com.mutex); 2698 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, state %s", __func__, cm_id, 2699 states[lep->com.state]); 2700 2701 lep->com.state = DEAD; 2702 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr)) { 2703 /* if no refcount then close listen socket */ 2704 if (!rem_ep_from_listenlist(lep)) 2705 close_socket(lep->com.so); 2706 } else 2707 close_socket(lep->com.so); 2708 deref_cm_id(&lep->com); 2709 mutex_unlock(&lep->com.mutex); 2710 c4iw_put_ep(&lep->com); 2711 return 0; 2712 } 2713 2714 int __c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2715 { 2716 int ret; 2717 mutex_lock(&ep->com.mutex); 2718 ret = c4iw_ep_disconnect(ep, abrupt, gfp); 2719 mutex_unlock(&ep->com.mutex); 2720 return ret; 2721 } 2722 2723 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2724 { 2725 int ret = 0; 2726 int close = 0; 2727 int fatal = 0; 2728 struct c4iw_rdev *rdev; 2729 2730 2731 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep); 2732 2733 rdev = &ep->com.dev->rdev; 2734 2735 if (c4iw_fatal_error(rdev)) { 2736 2737 CTR2(KTR_IW_CXGBE, "%s:ced1 %p", __func__, ep); 2738 fatal = 1; 2739 close_complete_upcall(ep, -ECONNRESET); 2740 send_abort(ep); 2741 ep->com.state = DEAD; 2742 } 2743 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep, 2744 states[ep->com.state]); 2745 2746 /* 2747 * Ref the ep here in case we have fatal errors causing the 2748 * ep to be released and freed. 2749 */ 2750 c4iw_get_ep(&ep->com); 2751 switch (ep->com.state) { 2752 2753 case MPA_REQ_WAIT: 2754 case MPA_REQ_SENT: 2755 case MPA_REQ_RCVD: 2756 case MPA_REP_SENT: 2757 case FPDU_MODE: 2758 close = 1; 2759 if (abrupt) 2760 ep->com.state = ABORTING; 2761 else { 2762 ep->com.state = CLOSING; 2763 START_EP_TIMER(ep); 2764 } 2765 set_bit(CLOSE_SENT, &ep->com.flags); 2766 break; 2767 2768 case CLOSING: 2769 2770 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2771 2772 close = 1; 2773 if (abrupt) { 2774 STOP_EP_TIMER(ep); 2775 ep->com.state = ABORTING; 2776 } else 2777 ep->com.state = MORIBUND; 2778 } 2779 break; 2780 2781 case MORIBUND: 2782 case ABORTING: 2783 case DEAD: 2784 CTR3(KTR_IW_CXGBE, 2785 "%s ignoring disconnect ep %p state %u", __func__, 2786 ep, ep->com.state); 2787 break; 2788 2789 default: 2790 BUG(); 2791 break; 2792 } 2793 2794 2795 if (close) { 2796 2797 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep); 2798 2799 if (abrupt) { 2800 2801 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep); 2802 set_bit(EP_DISC_ABORT, &ep->com.history); 2803 close_complete_upcall(ep, -ECONNRESET); 2804 ret = send_abort(ep); 2805 if (ret) 2806 fatal = 1; 2807 } else { 2808 2809 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep); 2810 set_bit(EP_DISC_CLOSE, &ep->com.history); 2811 2812 if (!ep->parent_ep) 2813 ep->com.state = MORIBUND; 2814 sodisconnect(ep->com.so); 2815 } 2816 2817 } 2818 2819 if (fatal) { 2820 set_bit(EP_DISC_FAIL, &ep->com.history); 2821 if (!abrupt) { 2822 STOP_EP_TIMER(ep); 2823 close_complete_upcall(ep, -EIO); 2824 } 2825 if (ep->com.qp) { 2826 struct c4iw_qp_attributes attrs = {0}; 2827 2828 attrs.next_state = C4IW_QP_STATE_ERROR; 2829 ret = c4iw_modify_qp(ep->com.dev, ep->com.qp, 2830 C4IW_QP_ATTR_NEXT_STATE, 2831 &attrs, 1); 2832 if (ret) { 2833 CTR2(KTR_IW_CXGBE, "%s:ced7 %p", __func__, ep); 2834 printf("%s - qp <- error failed!\n", __func__); 2835 } 2836 } 2837 release_ep_resources(ep); 2838 ep->com.state = DEAD; 2839 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep); 2840 } 2841 c4iw_put_ep(&ep->com); 2842 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep); 2843 return ret; 2844 } 2845 2846 #ifdef C4IW_EP_REDIRECT 2847 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, 2848 struct l2t_entry *l2t) 2849 { 2850 struct c4iw_ep *ep = ctx; 2851 2852 if (ep->dst != old) 2853 return 0; 2854 2855 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, 2856 l2t); 2857 dst_hold(new); 2858 cxgb4_l2t_release(ep->l2t); 2859 ep->l2t = l2t; 2860 dst_release(old); 2861 ep->dst = new; 2862 return 1; 2863 } 2864 #endif 2865 2866 2867 2868 static void ep_timeout(unsigned long arg) 2869 { 2870 struct c4iw_ep *ep = (struct c4iw_ep *)arg; 2871 2872 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 2873 2874 /* 2875 * Only insert if it is not already on the list. 2876 */ 2877 if (!(ep->com.ep_events & C4IW_EVENT_TIMEOUT)) { 2878 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep); 2879 add_ep_to_req_list(ep, C4IW_EVENT_TIMEOUT); 2880 } 2881 } 2882 } 2883 2884 static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl) 2885 { 2886 uint64_t val = be64toh(*rpl); 2887 int ret; 2888 struct c4iw_wr_wait *wr_waitp; 2889 2890 ret = (int)((val >> 8) & 0xff); 2891 wr_waitp = (struct c4iw_wr_wait *)rpl[1]; 2892 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret); 2893 if (wr_waitp) 2894 c4iw_wake_up(wr_waitp, ret ? -ret : 0); 2895 2896 return (0); 2897 } 2898 2899 static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl) 2900 { 2901 struct cqe_list_entry *cle; 2902 unsigned long flag; 2903 2904 cle = malloc(sizeof(*cle), M_CXGBE, M_NOWAIT); 2905 cle->rhp = sc->iwarp_softc; 2906 cle->err_cqe = *(const struct t4_cqe *)(&rpl[0]); 2907 2908 spin_lock_irqsave(&err_cqe_lock, flag); 2909 list_add_tail(&cle->entry, &err_cqe_list); 2910 queue_work(c4iw_taskq, &c4iw_task); 2911 spin_unlock_irqrestore(&err_cqe_lock, flag); 2912 2913 return (0); 2914 } 2915 2916 static int 2917 process_terminate(struct c4iw_ep *ep) 2918 { 2919 struct c4iw_qp_attributes attrs = {0}; 2920 2921 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep); 2922 2923 if (ep && ep->com.qp) { 2924 2925 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", 2926 ep->hwtid, ep->com.qp->wq.sq.qid); 2927 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2928 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 2929 1); 2930 } else 2931 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", 2932 ep->hwtid); 2933 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep); 2934 2935 return 0; 2936 } 2937 2938 int __init c4iw_cm_init(void) 2939 { 2940 2941 t4_register_cpl_handler(CPL_RDMA_TERMINATE, terminate); 2942 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, fw6_wr_rpl); 2943 t4_register_fw_msg_handler(FW6_TYPE_CQE, fw6_cqe_handler); 2944 t4_register_an_handler(c4iw_ev_handler); 2945 2946 TAILQ_INIT(&req_list); 2947 spin_lock_init(&req_lock); 2948 INIT_LIST_HEAD(&err_cqe_list); 2949 spin_lock_init(&err_cqe_lock); 2950 2951 INIT_WORK(&c4iw_task, process_req); 2952 2953 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe"); 2954 if (!c4iw_taskq) 2955 return -ENOMEM; 2956 2957 return 0; 2958 } 2959 2960 void __exit c4iw_cm_term(void) 2961 { 2962 WARN_ON(!TAILQ_EMPTY(&req_list)); 2963 WARN_ON(!list_empty(&err_cqe_list)); 2964 flush_workqueue(c4iw_taskq); 2965 destroy_workqueue(c4iw_taskq); 2966 2967 t4_register_cpl_handler(CPL_RDMA_TERMINATE, NULL); 2968 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, NULL); 2969 t4_register_fw_msg_handler(FW6_TYPE_CQE, NULL); 2970 t4_register_an_handler(NULL); 2971 } 2972 #endif 2973