1/*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2009-2013, 2016 Chelsio, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34#include <sys/cdefs.h> 35#include "opt_inet.h" 36 37#ifdef TCP_OFFLOAD 38#include <sys/types.h> 39#include <sys/malloc.h> 40#include <sys/socket.h> 41#include <sys/socketvar.h> 42#include <sys/sockio.h> 43#include <sys/taskqueue.h> 44#include <netinet/in.h> 45#include <net/route.h> 46#include <net/route/nhop.h> 47 48#include <netinet/in_systm.h> 49#include <netinet/in_pcb.h> 50#include <netinet6/in6_pcb.h> 51#include <netinet/ip.h> 52#include <netinet/in_fib.h> 53#include <netinet6/in6_fib.h> 54#include <netinet6/scope6_var.h> 55#include <netinet/ip_var.h> 56#include <netinet/tcp_var.h> 57#include <netinet/tcp.h> 58#include <netinet/tcpip.h> 59 60#include <netinet/toecore.h> 61 62struct sge_iq; 63struct rss_header; 64struct cpl_set_tcb_rpl; 65#include <linux/types.h> 66#include "offload.h" 67#include "tom/t4_tom.h" 68 69#define TOEPCB(so) ((struct toepcb *)(sototcpcb((so))->t_toe)) 70 71#include "iw_cxgbe.h" 72#include <linux/module.h> 73#include <linux/workqueue.h> 74#include <linux/if_vlan.h> 75#include <net/netevent.h> 76#include <rdma/rdma_cm.h> 77 78static spinlock_t req_lock; 79static TAILQ_HEAD(c4iw_ep_list, c4iw_ep_common) req_list; 80static struct work_struct c4iw_task; 81static struct workqueue_struct *c4iw_taskq; 82static LIST_HEAD(err_cqe_list); 83static spinlock_t err_cqe_lock; 84static LIST_HEAD(listen_port_list); 85static DEFINE_MUTEX(listen_port_mutex); 86 87static void process_req(struct work_struct *ctx); 88static void start_ep_timer(struct c4iw_ep *ep); 89static int stop_ep_timer(struct c4iw_ep *ep); 90static int set_tcpinfo(struct c4iw_ep *ep); 91static void process_timeout(struct c4iw_ep *ep); 92static void process_err_cqes(void); 93static void *alloc_ep(int size, gfp_t flags); 94static void close_socket(struct socket *so); 95static int send_mpa_req(struct c4iw_ep *ep); 96static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen); 97static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen); 98static void close_complete_upcall(struct c4iw_ep *ep, int status); 99static int send_abort(struct c4iw_ep *ep); 100static void peer_close_upcall(struct c4iw_ep *ep); 101static void peer_abort_upcall(struct c4iw_ep *ep); 102static void connect_reply_upcall(struct c4iw_ep *ep, int status); 103static int connect_request_upcall(struct c4iw_ep *ep); 104static void established_upcall(struct c4iw_ep *ep); 105static int process_mpa_reply(struct c4iw_ep *ep); 106static int process_mpa_request(struct c4iw_ep *ep); 107static void process_peer_close(struct c4iw_ep *ep); 108static void process_conn_error(struct c4iw_ep *ep); 109static void process_close_complete(struct c4iw_ep *ep); 110static void ep_timeout(unsigned long arg); 111static void setiwsockopt(struct socket *so); 112static void init_iwarp_socket(struct socket *so, void *arg); 113static void uninit_iwarp_socket(struct socket *so); 114static void process_data(struct c4iw_ep *ep); 115static void process_connected(struct c4iw_ep *ep); 116static int c4iw_so_upcall(struct socket *so, void *arg, int waitflag); 117static void process_socket_event(struct c4iw_ep *ep); 118static void release_ep_resources(struct c4iw_ep *ep); 119static int process_terminate(struct c4iw_ep *ep); 120static int terminate(struct sge_iq *iq, const struct rss_header *rss, 121 struct mbuf *m); 122static int add_ep_to_req_list(struct c4iw_ep *ep, int ep_events); 123static struct listen_port_info * 124add_ep_to_listenlist(struct c4iw_listen_ep *lep); 125static int rem_ep_from_listenlist(struct c4iw_listen_ep *lep); 126static struct c4iw_listen_ep * 127find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so); 128static int get_ifnet_from_raddr(struct sockaddr_storage *raddr, 129 if_t *ifp); 130static void process_newconn(struct c4iw_listen_ep *master_lep, 131 struct socket *new_so); 132#define START_EP_TIMER(ep) \ 133 do { \ 134 CTR3(KTR_IW_CXGBE, "start_ep_timer (%s:%d) ep %p", \ 135 __func__, __LINE__, (ep)); \ 136 start_ep_timer(ep); \ 137 } while (0) 138 139#define STOP_EP_TIMER(ep) \ 140 ({ \ 141 CTR3(KTR_IW_CXGBE, "stop_ep_timer (%s:%d) ep %p", \ 142 __func__, __LINE__, (ep)); \ 143 stop_ep_timer(ep); \ 144 }) 145 146#define GET_LOCAL_ADDR(pladdr, so) \ 147 do { \ 148 struct inpcb *__inp = sotoinpcb(so); \ 149 KASSERT(__inp != NULL, \ 150 ("GET_LOCAL_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 151 if (__inp->inp_vflag & INP_IPV4) \ 152 in_getsockaddr(so, (struct sockaddr *)pladdr); \ 153 else \ 154 in6_getsockaddr(so, (struct sockaddr *)pladdr); \ 155 } while (0) 156 157#define GET_REMOTE_ADDR(praddr, so) \ 158 do { \ 159 struct inpcb *__inp = sotoinpcb(so); \ 160 KASSERT(__inp != NULL, \ 161 ("GET_REMOTE_ADDR(%s):so:%p, inp = NULL", __func__, so)); \ 162 if (__inp->inp_vflag & INP_IPV4) \ 163 in_getpeeraddr(so, (struct sockaddr *)praddr); \ 164 else \ 165 in6_getpeeraddr(so, (struct sockaddr *)praddr); \ 166 } while (0) 167 168static char *states[] = { 169 "idle", 170 "listen", 171 "connecting", 172 "mpa_wait_req", 173 "mpa_req_sent", 174 "mpa_req_rcvd", 175 "mpa_rep_sent", 176 "fpdu_mode", 177 "aborting", 178 "closing", 179 "moribund", 180 "dead", 181 NULL, 182}; 183 184static void deref_cm_id(struct c4iw_ep_common *epc) 185{ 186 epc->cm_id->rem_ref(epc->cm_id); 187 epc->cm_id = NULL; 188 set_bit(CM_ID_DEREFED, &epc->history); 189} 190 191static void ref_cm_id(struct c4iw_ep_common *epc) 192{ 193 set_bit(CM_ID_REFED, &epc->history); 194 epc->cm_id->add_ref(epc->cm_id); 195} 196 197static void deref_qp(struct c4iw_ep *ep) 198{ 199 c4iw_qp_rem_ref(&ep->com.qp->ibqp); 200 clear_bit(QP_REFERENCED, &ep->com.flags); 201 set_bit(QP_DEREFED, &ep->com.history); 202} 203 204static void ref_qp(struct c4iw_ep *ep) 205{ 206 set_bit(QP_REFERENCED, &ep->com.flags); 207 set_bit(QP_REFED, &ep->com.history); 208 c4iw_qp_add_ref(&ep->com.qp->ibqp); 209} 210/* allocated per TCP port while listening */ 211struct listen_port_info { 212 uint16_t port_num; /* TCP port address */ 213 struct list_head list; /* belongs to listen_port_list */ 214 struct list_head lep_list; /* per port lep list */ 215 uint32_t refcnt; /* number of lep's listening */ 216}; 217 218/* 219 * Following two lists are used to manage INADDR_ANY listeners: 220 * 1)listen_port_list 221 * 2)lep_list 222 * 223 * Below is the INADDR_ANY listener lists overview on a system with a two port 224 * adapter: 225 * |------------------| 226 * |listen_port_list | 227 * |------------------| 228 * | 229 * | |-----------| |-----------| 230 * | | port_num:X| | port_num:X| 231 * |--------------|-list------|-------|-list------|-------.... 232 * | lep_list----| | lep_list----| 233 * | refcnt | | | refcnt | | 234 * | | | | | | 235 * | | | | | | 236 * |-----------| | |-----------| | 237 * | | 238 * | | 239 * | | 240 * | | lep1 lep2 241 * | | |----------------| |----------------| 242 * | |----| listen_ep_list |----| listen_ep_list | 243 * | |----------------| |----------------| 244 * | 245 * | 246 * | lep1 lep2 247 * | |----------------| |----------------| 248 * |---| listen_ep_list |----| listen_ep_list | 249 * |----------------| |----------------| 250 * 251 * Because of two port adapter, the number of lep's are two(lep1 & lep2) for 252 * each TCP port number. 253 * 254 * Here 'lep1' is always marked as Master lep, because solisten() is always 255 * called through first lep. 256 * 257 */ 258static struct listen_port_info * 259add_ep_to_listenlist(struct c4iw_listen_ep *lep) 260{ 261 uint16_t port; 262 struct listen_port_info *port_info = NULL; 263 struct sockaddr_storage *laddr = &lep->com.local_addr; 264 265 port = (laddr->ss_family == AF_INET) ? 266 ((struct sockaddr_in *)laddr)->sin_port : 267 ((struct sockaddr_in6 *)laddr)->sin6_port; 268 269 mutex_lock(&listen_port_mutex); 270 271 list_for_each_entry(port_info, &listen_port_list, list) 272 if (port_info->port_num == port) 273 goto found_port; 274 275 port_info = malloc(sizeof(*port_info), M_CXGBE, M_WAITOK); 276 port_info->port_num = port; 277 port_info->refcnt = 0; 278 279 list_add_tail(&port_info->list, &listen_port_list); 280 INIT_LIST_HEAD(&port_info->lep_list); 281 282found_port: 283 port_info->refcnt++; 284 list_add_tail(&lep->listen_ep_list, &port_info->lep_list); 285 mutex_unlock(&listen_port_mutex); 286 return port_info; 287} 288 289static int 290rem_ep_from_listenlist(struct c4iw_listen_ep *lep) 291{ 292 uint16_t port; 293 struct listen_port_info *port_info = NULL; 294 struct sockaddr_storage *laddr = &lep->com.local_addr; 295 int refcnt = 0; 296 297 port = (laddr->ss_family == AF_INET) ? 298 ((struct sockaddr_in *)laddr)->sin_port : 299 ((struct sockaddr_in6 *)laddr)->sin6_port; 300 301 mutex_lock(&listen_port_mutex); 302 303 /* get the port_info structure based on the lep's port address */ 304 list_for_each_entry(port_info, &listen_port_list, list) { 305 if (port_info->port_num == port) { 306 port_info->refcnt--; 307 refcnt = port_info->refcnt; 308 /* remove the current lep from the listen list */ 309 list_del(&lep->listen_ep_list); 310 if (port_info->refcnt == 0) { 311 /* Remove this entry from the list as there 312 * are no more listeners for this port_num. 313 */ 314 list_del(&port_info->list); 315 kfree(port_info); 316 } 317 break; 318 } 319 } 320 mutex_unlock(&listen_port_mutex); 321 return refcnt; 322} 323 324/* 325 * Find the lep that belongs to the ifnet on which the SYN frame was received. 326 */ 327struct c4iw_listen_ep * 328find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so) 329{ 330 struct adapter *adap = NULL; 331 struct c4iw_listen_ep *lep = NULL; 332 if_t ifp = NULL, hw_ifp = NULL; 333 struct listen_port_info *port_info = NULL; 334 int i = 0, found_portinfo = 0, found_lep = 0; 335 uint16_t port; 336 337 /* 338 * STEP 1: Figure out 'ifp' of the physical interface, not pseudo 339 * interfaces like vlan, lagg, etc.. 340 * TBD: lagg support, lagg + vlan support. 341 */ 342 ifp = TOEPCB(so)->l2te->ifp; 343 if (if_gettype(ifp) == IFT_L2VLAN) { 344 hw_ifp = VLAN_TRUNKDEV(ifp); 345 if (hw_ifp == NULL) { 346 CTR4(KTR_IW_CXGBE, "%s: Failed to get parent ifnet of " 347 "vlan ifnet %p, sock %p, master_lep %p", 348 __func__, ifp, so, master_lep); 349 return (NULL); 350 } 351 } else 352 hw_ifp = ifp; 353 354 /* STEP 2: Find 'port_info' with listener local port address. */ 355 port = (master_lep->com.local_addr.ss_family == AF_INET) ? 356 ((struct sockaddr_in *)&master_lep->com.local_addr)->sin_port : 357 ((struct sockaddr_in6 *)&master_lep->com.local_addr)->sin6_port; 358 359 360 mutex_lock(&listen_port_mutex); 361 list_for_each_entry(port_info, &listen_port_list, list) 362 if (port_info->port_num == port) { 363 found_portinfo =1; 364 break; 365 } 366 if (!found_portinfo) 367 goto out; 368 369 /* STEP 3: Traverse through list of lep's that are bound to the current 370 * TCP port address and find the lep that belongs to the ifnet on which 371 * the SYN frame was received. 372 */ 373 list_for_each_entry(lep, &port_info->lep_list, listen_ep_list) { 374 adap = lep->com.dev->rdev.adap; 375 for_each_port(adap, i) { 376 if (hw_ifp == adap->port[i]->vi[0].ifp) { 377 found_lep =1; 378 goto out; 379 } 380 } 381 } 382out: 383 mutex_unlock(&listen_port_mutex); 384 return found_lep ? lep : (NULL); 385} 386 387static void process_timeout(struct c4iw_ep *ep) 388{ 389 struct c4iw_qp_attributes attrs = {0}; 390 int abort = 1; 391 392 CTR4(KTR_IW_CXGBE, "%s ep :%p, tid:%u, state %d", __func__, 393 ep, ep->hwtid, ep->com.state); 394 set_bit(TIMEDOUT, &ep->com.history); 395 switch (ep->com.state) { 396 case MPA_REQ_SENT: 397 connect_reply_upcall(ep, -ETIMEDOUT); 398 break; 399 case MPA_REQ_WAIT: 400 case MPA_REQ_RCVD: 401 case MPA_REP_SENT: 402 case FPDU_MODE: 403 break; 404 case CLOSING: 405 case MORIBUND: 406 if (ep->com.cm_id && ep->com.qp) { 407 attrs.next_state = C4IW_QP_STATE_ERROR; 408 c4iw_modify_qp(ep->com.dev, ep->com.qp, 409 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 410 } 411 close_complete_upcall(ep, -ETIMEDOUT); 412 break; 413 case ABORTING: 414 case DEAD: 415 /* 416 * These states are expected if the ep timed out at the same 417 * time as another thread was calling stop_ep_timer(). 418 * So we silently do nothing for these states. 419 */ 420 abort = 0; 421 break; 422 default: 423 CTR4(KTR_IW_CXGBE, "%s unexpected state ep %p tid %u state %u" 424 , __func__, ep, ep->hwtid, ep->com.state); 425 abort = 0; 426 } 427 if (abort) 428 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 429 c4iw_put_ep(&ep->com); 430 return; 431} 432 433struct cqe_list_entry { 434 struct list_head entry; 435 struct c4iw_dev *rhp; 436 struct t4_cqe err_cqe; 437}; 438 439static void 440process_err_cqes(void) 441{ 442 unsigned long flag; 443 struct cqe_list_entry *cle; 444 445 spin_lock_irqsave(&err_cqe_lock, flag); 446 while (!list_empty(&err_cqe_list)) { 447 struct list_head *tmp; 448 tmp = err_cqe_list.next; 449 list_del(tmp); 450 tmp->next = tmp->prev = NULL; 451 spin_unlock_irqrestore(&err_cqe_lock, flag); 452 cle = list_entry(tmp, struct cqe_list_entry, entry); 453 c4iw_ev_dispatch(cle->rhp, &cle->err_cqe); 454 free(cle, M_CXGBE); 455 spin_lock_irqsave(&err_cqe_lock, flag); 456 } 457 spin_unlock_irqrestore(&err_cqe_lock, flag); 458 459 return; 460} 461 462static void 463process_req(struct work_struct *ctx) 464{ 465 struct c4iw_ep_common *epc; 466 unsigned long flag; 467 int ep_events; 468 469 process_err_cqes(); 470 spin_lock_irqsave(&req_lock, flag); 471 while (!TAILQ_EMPTY(&req_list)) { 472 epc = TAILQ_FIRST(&req_list); 473 TAILQ_REMOVE(&req_list, epc, entry); 474 epc->entry.tqe_prev = NULL; 475 ep_events = epc->ep_events; 476 epc->ep_events = 0; 477 spin_unlock_irqrestore(&req_lock, flag); 478 mutex_lock(&epc->mutex); 479 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, ep_state %s events 0x%x", 480 __func__, epc->so, epc, states[epc->state], ep_events); 481 if (ep_events & C4IW_EVENT_TERM) 482 process_terminate((struct c4iw_ep *)epc); 483 if (ep_events & C4IW_EVENT_TIMEOUT) 484 process_timeout((struct c4iw_ep *)epc); 485 if (ep_events & C4IW_EVENT_SOCKET) 486 process_socket_event((struct c4iw_ep *)epc); 487 mutex_unlock(&epc->mutex); 488 c4iw_put_ep(epc); 489 process_err_cqes(); 490 spin_lock_irqsave(&req_lock, flag); 491 } 492 spin_unlock_irqrestore(&req_lock, flag); 493} 494 495/* 496 * XXX: doesn't belong here in the iWARP driver. 497 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is 498 * set. Is this a valid assumption for active open? 499 */ 500static int 501set_tcpinfo(struct c4iw_ep *ep) 502{ 503 struct socket *so = ep->com.so; 504 struct inpcb *inp = sotoinpcb(so); 505 struct tcpcb *tp; 506 struct toepcb *toep; 507 int rc = 0; 508 509 INP_WLOCK(inp); 510 tp = intotcpcb(inp); 511 if ((tp->t_flags & TF_TOE) == 0) { 512 rc = EINVAL; 513 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n", 514 __func__, so, ep); 515 goto done; 516 } 517 toep = TOEPCB(so); 518 519 ep->hwtid = toep->tid; 520 ep->snd_seq = tp->snd_nxt; 521 ep->rcv_seq = tp->rcv_nxt; 522done: 523 INP_WUNLOCK(inp); 524 return (rc); 525 526} 527static int 528get_ifnet_from_raddr(struct sockaddr_storage *raddr, if_t *ifp) 529{ 530 int err = 0; 531 struct nhop_object *nh; 532 533 if (raddr->ss_family == AF_INET) { 534 struct sockaddr_in *raddr4 = (struct sockaddr_in *)raddr; 535 536 nh = fib4_lookup(RT_DEFAULT_FIB, raddr4->sin_addr, 0, 537 NHR_NONE, 0); 538 } else { 539 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)raddr; 540 struct in6_addr addr6; 541 uint32_t scopeid; 542 543 memset(&addr6, 0, sizeof(addr6)); 544 in6_splitscope((struct in6_addr *)&raddr6->sin6_addr, 545 &addr6, &scopeid); 546 nh = fib6_lookup(RT_DEFAULT_FIB, &addr6, scopeid, 547 NHR_NONE, 0); 548 } 549 550 if (nh == NULL) 551 err = EHOSTUNREACH; 552 else 553 *ifp = nh->nh_ifp; 554 CTR2(KTR_IW_CXGBE, "%s: return: %d", __func__, err); 555 return err; 556} 557 558static void 559close_socket(struct socket *so) 560{ 561 uninit_iwarp_socket(so); 562 soclose(so); 563} 564 565static void 566process_peer_close(struct c4iw_ep *ep) 567{ 568 struct c4iw_qp_attributes attrs = {0}; 569 int disconnect = 1; 570 int release = 0; 571 572 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep, 573 ep->com.so, states[ep->com.state]); 574 575 switch (ep->com.state) { 576 577 case MPA_REQ_WAIT: 578 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT DEAD", 579 __func__, ep); 580 /* Fallthrough */ 581 case MPA_REQ_SENT: 582 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT DEAD", 583 __func__, ep); 584 ep->com.state = DEAD; 585 connect_reply_upcall(ep, -ECONNABORTED); 586 587 disconnect = 0; 588 STOP_EP_TIMER(ep); 589 close_socket(ep->com.so); 590 deref_cm_id(&ep->com); 591 release = 1; 592 break; 593 594 case MPA_REQ_RCVD: 595 596 /* 597 * We're gonna mark this puppy DEAD, but keep 598 * the reference on it until the ULP accepts or 599 * rejects the CR. 600 */ 601 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING", 602 __func__, ep); 603 ep->com.state = CLOSING; 604 break; 605 606 case MPA_REP_SENT: 607 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING", 608 __func__, ep); 609 ep->com.state = CLOSING; 610 break; 611 612 case FPDU_MODE: 613 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING", 614 __func__, ep); 615 START_EP_TIMER(ep); 616 ep->com.state = CLOSING; 617 attrs.next_state = C4IW_QP_STATE_CLOSING; 618 c4iw_modify_qp(ep->com.dev, ep->com.qp, 619 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 620 peer_close_upcall(ep); 621 break; 622 623 case ABORTING: 624 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)", 625 __func__, ep); 626 disconnect = 0; 627 break; 628 629 case CLOSING: 630 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND", 631 __func__, ep); 632 ep->com.state = MORIBUND; 633 disconnect = 0; 634 break; 635 636 case MORIBUND: 637 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__, 638 ep); 639 STOP_EP_TIMER(ep); 640 if (ep->com.cm_id && ep->com.qp) { 641 attrs.next_state = C4IW_QP_STATE_IDLE; 642 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 643 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 644 } 645 close_socket(ep->com.so); 646 close_complete_upcall(ep, 0); 647 ep->com.state = DEAD; 648 release = 1; 649 disconnect = 0; 650 break; 651 652 case DEAD: 653 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)", 654 __func__, ep); 655 disconnect = 0; 656 break; 657 658 default: 659 panic("%s: ep %p state %d", __func__, ep, 660 ep->com.state); 661 break; 662 } 663 664 665 if (disconnect) { 666 667 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep); 668 c4iw_ep_disconnect(ep, 0, M_NOWAIT); 669 } 670 if (release) { 671 672 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep); 673 c4iw_put_ep(&ep->com); 674 } 675 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep); 676 return; 677} 678 679static void 680process_conn_error(struct c4iw_ep *ep) 681{ 682 struct c4iw_qp_attributes attrs = {0}; 683 int ret; 684 int state; 685 686 state = ep->com.state; 687 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s", 688 __func__, ep, ep->com.so, ep->com.so->so_error, 689 states[ep->com.state]); 690 691 switch (state) { 692 693 case MPA_REQ_WAIT: 694 STOP_EP_TIMER(ep); 695 c4iw_put_ep(&ep->parent_ep->com); 696 break; 697 698 case MPA_REQ_SENT: 699 STOP_EP_TIMER(ep); 700 connect_reply_upcall(ep, -ECONNRESET); 701 break; 702 703 case MPA_REP_SENT: 704 ep->com.rpl_err = ECONNRESET; 705 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep); 706 break; 707 708 case MPA_REQ_RCVD: 709 break; 710 711 case MORIBUND: 712 case CLOSING: 713 STOP_EP_TIMER(ep); 714 /*FALLTHROUGH*/ 715 case FPDU_MODE: 716 717 if (ep->com.cm_id && ep->com.qp) { 718 719 attrs.next_state = C4IW_QP_STATE_ERROR; 720 ret = c4iw_modify_qp(ep->com.qp->rhp, 721 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 722 &attrs, 1); 723 if (ret) 724 log(LOG_ERR, 725 "%s - qp <- error failed!\n", 726 __func__); 727 } 728 peer_abort_upcall(ep); 729 break; 730 731 case ABORTING: 732 break; 733 734 case DEAD: 735 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!", 736 __func__, ep->com.so->so_error); 737 return; 738 739 default: 740 panic("%s: ep %p state %d", __func__, ep, state); 741 break; 742 } 743 744 if (state != ABORTING) { 745 close_socket(ep->com.so); 746 ep->com.state = DEAD; 747 c4iw_put_ep(&ep->com); 748 } 749 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep); 750 return; 751} 752 753static void 754process_close_complete(struct c4iw_ep *ep) 755{ 756 struct c4iw_qp_attributes attrs = {0}; 757 int release = 0; 758 759 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep, 760 ep->com.so, states[ep->com.state]); 761 762 /* The cm_id may be null if we failed to connect */ 763 set_bit(CLOSE_CON_RPL, &ep->com.history); 764 765 switch (ep->com.state) { 766 767 case CLOSING: 768 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND", 769 __func__, ep); 770 ep->com.state = MORIBUND; 771 break; 772 773 case MORIBUND: 774 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__, 775 ep); 776 STOP_EP_TIMER(ep); 777 778 if ((ep->com.cm_id) && (ep->com.qp)) { 779 780 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE", 781 __func__, ep); 782 attrs.next_state = C4IW_QP_STATE_IDLE; 783 c4iw_modify_qp(ep->com.dev, 784 ep->com.qp, 785 C4IW_QP_ATTR_NEXT_STATE, 786 &attrs, 1); 787 } 788 789 close_socket(ep->com.so); 790 close_complete_upcall(ep, 0); 791 ep->com.state = DEAD; 792 release = 1; 793 break; 794 795 case ABORTING: 796 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep); 797 break; 798 799 case DEAD: 800 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep); 801 break; 802 default: 803 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p unknown ep state", 804 __func__, ep); 805 panic("%s:pcc6 %p unknown ep state", __func__, ep); 806 break; 807 } 808 809 if (release) { 810 811 CTR2(KTR_IW_CXGBE, "%s:pcc8 %p", __func__, ep); 812 release_ep_resources(ep); 813 } 814 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep); 815 return; 816} 817 818static void 819setiwsockopt(struct socket *so) 820{ 821 int rc; 822 struct sockopt sopt; 823 int on = 1; 824 825 sopt.sopt_dir = SOPT_SET; 826 sopt.sopt_level = IPPROTO_TCP; 827 sopt.sopt_name = TCP_NODELAY; 828 sopt.sopt_val = (caddr_t)&on; 829 sopt.sopt_valsize = sizeof on; 830 sopt.sopt_td = NULL; 831 rc = -sosetopt(so, &sopt); 832 if (rc) { 833 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n", 834 __func__, so, rc); 835 } 836} 837 838static void 839init_iwarp_socket(struct socket *so, void *arg) 840{ 841 if (SOLISTENING(so)) { 842 SOLISTEN_LOCK(so); 843 solisten_upcall_set(so, c4iw_so_upcall, arg); 844 so->so_state |= SS_NBIO; 845 SOLISTEN_UNLOCK(so); 846 } else { 847 SOCKBUF_LOCK(&so->so_rcv); 848 soupcall_set(so, SO_RCV, c4iw_so_upcall, arg); 849 so->so_state |= SS_NBIO; 850 SOCKBUF_UNLOCK(&so->so_rcv); 851 } 852} 853 854static void 855uninit_iwarp_socket(struct socket *so) 856{ 857 if (SOLISTENING(so)) { 858 SOLISTEN_LOCK(so); 859 solisten_upcall_set(so, NULL, NULL); 860 SOLISTEN_UNLOCK(so); 861 } else { 862 SOCKBUF_LOCK(&so->so_rcv); 863 soupcall_clear(so, SO_RCV); 864 SOCKBUF_UNLOCK(&so->so_rcv); 865 } 866} 867 868static void 869process_data(struct c4iw_ep *ep) 870{ 871 int ret = 0; 872 int disconnect = 0; 873 struct c4iw_qp_attributes attrs = {0}; 874 875 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sbused %d", __func__, 876 ep->com.so, ep, states[ep->com.state], sbused(&ep->com.so->so_rcv)); 877 878 switch (ep->com.state) { 879 case MPA_REQ_SENT: 880 disconnect = process_mpa_reply(ep); 881 break; 882 case MPA_REQ_WAIT: 883 disconnect = process_mpa_request(ep); 884 if (disconnect) 885 /* Refered in process_newconn() */ 886 c4iw_put_ep(&ep->parent_ep->com); 887 break; 888 case FPDU_MODE: 889 MPASS(ep->com.qp != NULL); 890 attrs.next_state = C4IW_QP_STATE_TERMINATE; 891 ret = c4iw_modify_qp(ep->com.dev, ep->com.qp, 892 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 893 if (ret != -EINPROGRESS) 894 disconnect = 1; 895 break; 896 default: 897 log(LOG_ERR, "%s: Unexpected streaming data. ep %p, " 898 "state %d, so %p, so_state 0x%x, sbused %u\n", 899 __func__, ep, ep->com.state, ep->com.so, 900 ep->com.so->so_state, sbused(&ep->com.so->so_rcv)); 901 break; 902 } 903 if (disconnect) 904 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); 905 906} 907 908static void 909process_connected(struct c4iw_ep *ep) 910{ 911 struct socket *so = ep->com.so; 912 913 if ((so->so_state & SS_ISCONNECTED) && !so->so_error) { 914 if (send_mpa_req(ep)) 915 goto err; 916 } else { 917 connect_reply_upcall(ep, -so->so_error); 918 goto err; 919 } 920 return; 921err: 922 close_socket(so); 923 ep->com.state = DEAD; 924 c4iw_put_ep(&ep->com); 925 return; 926} 927 928static inline bool c4iw_zero_addr(struct sockaddr *addr) 929{ 930 struct in6_addr *ip6; 931 932 if (addr->sa_family == AF_INET) 933 return (((struct sockaddr_in *)addr)->sin_addr.s_addr == 0); 934 else { 935 ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; 936 return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | 937 ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; 938 } 939} 940 941#define _IN_LOOPBACK(i) (((in_addr_t)(i) & 0xff000000) == 0x7f000000) 942static inline bool c4iw_loopback_addr(struct sockaddr *addr, struct vnet *vnet) 943{ 944 bool ret; 945 946 if (addr->sa_family == AF_INET) { 947 if (vnet == NULL) 948 ret = _IN_LOOPBACK(ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 949 else { 950 CURVNET_SET_QUIET(vnet); 951 ret = IN_LOOPBACK(ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr)); 952 CURVNET_RESTORE(); 953 } 954 } else { 955 ret = IN6_IS_ADDR_LOOPBACK(&((struct sockaddr_in6 *) addr)->sin6_addr); 956 } 957 return (ret); 958} 959#undef _IN_LOOPBACK 960 961static inline bool c4iw_any_addr(struct sockaddr *addr, struct vnet *vnet) 962{ 963 return c4iw_zero_addr(addr) || c4iw_loopback_addr(addr, vnet); 964} 965 966static void 967process_newconn(struct c4iw_listen_ep *master_lep, struct socket *new_so) 968{ 969 struct c4iw_listen_ep *real_lep = NULL; 970 struct c4iw_ep *new_ep = NULL; 971 struct sockaddr_storage remote = { .ss_len = sizeof(remote) }; 972 int ret = 0; 973 974 MPASS(new_so != NULL); 975 976 if (c4iw_any_addr((struct sockaddr *)&master_lep->com.local_addr, 977 new_so->so_vnet)) { 978 /* Here we need to find the 'real_lep' that belongs to the 979 * incomming socket's network interface, such that the newly 980 * created 'ep' can be attached to the real 'lep'. 981 */ 982 real_lep = find_real_listen_ep(master_lep, new_so); 983 if (real_lep == NULL) { 984 CTR2(KTR_IW_CXGBE, "%s: Could not find the real listen " 985 "ep for sock: %p", __func__, new_so); 986 log(LOG_ERR,"%s: Could not find the real listen ep for " 987 "sock: %p\n", __func__, new_so); 988 /* FIXME: properly free the 'new_so' in failure case. 989 * Use of soabort() and soclose() are not legal 990 * here(before soaccept()). 991 */ 992 return; 993 } 994 } else /* for Non-Wildcard address, master_lep is always the real_lep */ 995 real_lep = master_lep; 996 997 new_ep = alloc_ep(sizeof(*new_ep), GFP_KERNEL); 998 999 CTR6(KTR_IW_CXGBE, "%s: master_lep %p, real_lep: %p, new ep %p, " 1000 "listening so %p, new so %p", __func__, master_lep, real_lep, 1001 new_ep, master_lep->com.so, new_so); 1002 1003 new_ep->com.dev = real_lep->com.dev; 1004 new_ep->com.so = new_so; 1005 new_ep->com.cm_id = NULL; 1006 new_ep->com.thread = real_lep->com.thread; 1007 new_ep->parent_ep = real_lep; 1008 1009 GET_LOCAL_ADDR(&new_ep->com.local_addr, new_so); 1010 GET_REMOTE_ADDR(&new_ep->com.remote_addr, new_so); 1011 c4iw_get_ep(&real_lep->com); 1012 init_timer(&new_ep->timer); 1013 new_ep->com.state = MPA_REQ_WAIT; 1014 1015 setiwsockopt(new_so); 1016 ret = soaccept(new_so, (struct sockaddr *)&remote); 1017 if (ret != 0) { 1018 CTR4(KTR_IW_CXGBE, 1019 "%s:listen sock:%p, new sock:%p, ret:%d", 1020 __func__, master_lep->com.so, new_so, ret); 1021 soclose(new_so); 1022 c4iw_put_ep(&new_ep->com); 1023 c4iw_put_ep(&real_lep->com); 1024 return; 1025 } 1026 1027 START_EP_TIMER(new_ep); 1028 1029 /* MPA request might have been queued up on the socket already, so we 1030 * initialize the socket/upcall_handler under lock to prevent processing 1031 * MPA request on another thread(via process_req()) simultaneously. 1032 */ 1033 c4iw_get_ep(&new_ep->com); /* Dereferenced at the end below, this is to 1034 avoid freeing of ep before ep unlock. */ 1035 mutex_lock(&new_ep->com.mutex); 1036 init_iwarp_socket(new_so, &new_ep->com); 1037 1038 ret = process_mpa_request(new_ep); 1039 if (ret) { 1040 /* ABORT */ 1041 c4iw_ep_disconnect(new_ep, 1, GFP_KERNEL); 1042 c4iw_put_ep(&real_lep->com); 1043 } 1044 mutex_unlock(&new_ep->com.mutex); 1045 c4iw_put_ep(&new_ep->com); 1046 return; 1047} 1048 1049static int 1050add_ep_to_req_list(struct c4iw_ep *ep, int new_ep_event) 1051{ 1052 unsigned long flag; 1053 1054 spin_lock_irqsave(&req_lock, flag); 1055 if (ep && ep->com.so) { 1056 ep->com.ep_events |= new_ep_event; 1057 if (!ep->com.entry.tqe_prev) { 1058 c4iw_get_ep(&ep->com); 1059 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry); 1060 queue_work(c4iw_taskq, &c4iw_task); 1061 } 1062 } 1063 spin_unlock_irqrestore(&req_lock, flag); 1064 1065 return (0); 1066} 1067 1068static int 1069c4iw_so_upcall(struct socket *so, void *arg, int waitflag) 1070{ 1071 struct c4iw_ep *ep = arg; 1072 1073 CTR6(KTR_IW_CXGBE, 1074 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p", 1075 __func__, so, so->so_state, ep, states[ep->com.state], 1076 ep->com.entry.tqe_prev); 1077 1078 MPASS(ep->com.so == so); 1079 /* 1080 * Wake up any threads waiting in rdma_init()/rdma_fini(), 1081 * with locks held. 1082 */ 1083 if (so->so_error || (ep->com.dev->rdev.flags & T4_FATAL_ERROR)) 1084 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 1085 add_ep_to_req_list(ep, C4IW_EVENT_SOCKET); 1086 1087 return (SU_OK); 1088} 1089 1090 1091static int 1092terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) 1093{ 1094 struct adapter *sc = iq->adapter; 1095 const struct cpl_rdma_terminate *cpl = mtod(m, const void *); 1096 unsigned int tid = GET_TID(cpl); 1097 struct toepcb *toep = lookup_tid(sc, tid); 1098 struct socket *so; 1099 struct c4iw_ep *ep; 1100 1101 INP_WLOCK(toep->inp); 1102 so = inp_inpcbtosocket(toep->inp); 1103 ep = so->so_rcv.sb_upcallarg; 1104 INP_WUNLOCK(toep->inp); 1105 1106 CTR3(KTR_IW_CXGBE, "%s: so %p, ep %p", __func__, so, ep); 1107 add_ep_to_req_list(ep, C4IW_EVENT_TERM); 1108 1109 return 0; 1110} 1111 1112static void 1113process_socket_event(struct c4iw_ep *ep) 1114{ 1115 int state = ep->com.state; 1116 struct socket *so = ep->com.so; 1117 1118 if (ep->com.state == DEAD) { 1119 CTR3(KTR_IW_CXGBE, "%s: Pending socket event discarded " 1120 "ep %p ep_state %s", __func__, ep, states[state]); 1121 return; 1122 } 1123 1124 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, " 1125 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state, 1126 so->so_error, so->so_rcv.sb_state, ep, states[state]); 1127 1128 if (state == CONNECTING) { 1129 process_connected(ep); 1130 return; 1131 } 1132 1133 if (state == LISTEN) { 1134 struct c4iw_listen_ep *lep = (struct c4iw_listen_ep *)ep; 1135 struct socket *listen_so = so, *new_so = NULL; 1136 int error = 0; 1137 1138 SOLISTEN_LOCK(listen_so); 1139 do { 1140 error = solisten_dequeue(listen_so, &new_so, 1141 SOCK_NONBLOCK); 1142 if (error) { 1143 CTR4(KTR_IW_CXGBE, "%s: lep %p listen_so %p " 1144 "error %d", __func__, lep, listen_so, 1145 error); 1146 return; 1147 } 1148 process_newconn(lep, new_so); 1149 1150 /* solisten_dequeue() unlocks while return, so aquire 1151 * lock again for sol_qlen and also for next iteration. 1152 */ 1153 SOLISTEN_LOCK(listen_so); 1154 } while (listen_so->sol_qlen); 1155 SOLISTEN_UNLOCK(listen_so); 1156 1157 return; 1158 } 1159 1160 /* connection error */ 1161 if (so->so_error) { 1162 process_conn_error(ep); 1163 return; 1164 } 1165 1166 /* peer close */ 1167 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state <= CLOSING) { 1168 process_peer_close(ep); 1169 /* 1170 * check whether socket disconnect event is pending before 1171 * returning. Fallthrough if yes. 1172 */ 1173 if (!(so->so_state & SS_ISDISCONNECTED)) 1174 return; 1175 } 1176 1177 /* close complete */ 1178 if (so->so_state & SS_ISDISCONNECTED) { 1179 process_close_complete(ep); 1180 return; 1181 } 1182 1183 /* rx data */ 1184 if (sbused(&ep->com.so->so_rcv)) { 1185 process_data(ep); 1186 return; 1187 } 1188 1189 /* Socket events for 'MPA Request Received' and 'Close Complete' 1190 * were already processed earlier in their previous events handlers. 1191 * Hence, these socket events are skipped. 1192 * And any other socket events must have handled above. 1193 */ 1194 MPASS((ep->com.state == MPA_REQ_RCVD) || (ep->com.state == MORIBUND)); 1195 1196 if ((ep->com.state != MPA_REQ_RCVD) && (ep->com.state != MORIBUND)) 1197 log(LOG_ERR, "%s: Unprocessed socket event so %p, " 1198 "so_state 0x%x, so_err %d, sb_state 0x%x, ep %p, ep_state %s\n", 1199 __func__, so, so->so_state, so->so_error, so->so_rcv.sb_state, 1200 ep, states[state]); 1201 1202} 1203 1204SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 1205 "iw_cxgbe driver parameters"); 1206 1207static int dack_mode = 0; 1208SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RWTUN, &dack_mode, 0, 1209 "Delayed ack mode (default = 0)"); 1210 1211int c4iw_max_read_depth = 8; 1212SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RWTUN, &c4iw_max_read_depth, 0, 1213 "Per-connection max ORD/IRD (default = 8)"); 1214 1215static int enable_tcp_timestamps; 1216SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RWTUN, &enable_tcp_timestamps, 0, 1217 "Enable tcp timestamps (default = 0)"); 1218 1219static int enable_tcp_sack; 1220SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RWTUN, &enable_tcp_sack, 0, 1221 "Enable tcp SACK (default = 0)"); 1222 1223static int enable_tcp_window_scaling = 1; 1224SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RWTUN, &enable_tcp_window_scaling, 0, 1225 "Enable tcp window scaling (default = 1)"); 1226 1227int c4iw_debug = 0; 1228SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RWTUN, &c4iw_debug, 0, 1229 "Enable debug logging (default = 0)"); 1230 1231static int peer2peer = 1; 1232SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RWTUN, &peer2peer, 0, 1233 "Support peer2peer ULPs (default = 1)"); 1234 1235static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 1236SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RWTUN, &p2p_type, 0, 1237 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)"); 1238 1239static int ep_timeout_secs = 60; 1240SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RWTUN, &ep_timeout_secs, 0, 1241 "CM Endpoint operation timeout in seconds (default = 60)"); 1242 1243static int mpa_rev = 1; 1244SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RWTUN, &mpa_rev, 0, 1245 "MPA Revision, 0 supports amso1100, 1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)"); 1246 1247static int markers_enabled; 1248SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RWTUN, &markers_enabled, 0, 1249 "Enable MPA MARKERS (default(0) = disabled)"); 1250 1251static int crc_enabled = 1; 1252SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RWTUN, &crc_enabled, 0, 1253 "Enable MPA CRC (default(1) = enabled)"); 1254 1255static int rcv_win = 256 * 1024; 1256SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RWTUN, &rcv_win, 0, 1257 "TCP receive window in bytes (default = 256KB)"); 1258 1259static int snd_win = 128 * 1024; 1260SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RWTUN, &snd_win, 0, 1261 "TCP send window in bytes (default = 128KB)"); 1262 1263int use_dsgl = 1; 1264SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, use_dsgl, CTLFLAG_RWTUN, &use_dsgl, 0, 1265 "Use DSGL for PBL/FastReg (default=1)"); 1266 1267int inline_threshold = 128; 1268SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, inline_threshold, CTLFLAG_RWTUN, &inline_threshold, 0, 1269 "inline vs dsgl threshold (default=128)"); 1270 1271static int reuseaddr = 0; 1272SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, reuseaddr, CTLFLAG_RWTUN, &reuseaddr, 0, 1273 "Enable SO_REUSEADDR & SO_REUSEPORT socket options on all iWARP client connections(default = 0)"); 1274 1275static void 1276start_ep_timer(struct c4iw_ep *ep) 1277{ 1278 1279 if (timer_pending(&ep->timer)) { 1280 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep); 1281 printk(KERN_ERR "%s timer already started! ep %p\n", __func__, 1282 ep); 1283 return; 1284 } 1285 clear_bit(TIMEOUT, &ep->com.flags); 1286 c4iw_get_ep(&ep->com); 1287 ep->timer.expires = jiffies + ep_timeout_secs * HZ; 1288 ep->timer.data = (unsigned long)ep; 1289 ep->timer.function = ep_timeout; 1290 add_timer(&ep->timer); 1291} 1292 1293static int 1294stop_ep_timer(struct c4iw_ep *ep) 1295{ 1296 1297 del_timer_sync(&ep->timer); 1298 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 1299 c4iw_put_ep(&ep->com); 1300 return 0; 1301 } 1302 return 1; 1303} 1304 1305static void * 1306alloc_ep(int size, gfp_t gfp) 1307{ 1308 struct c4iw_ep_common *epc; 1309 1310 epc = kzalloc(size, gfp); 1311 if (epc == NULL) 1312 return (NULL); 1313 1314 kref_init(&epc->kref); 1315 mutex_init(&epc->mutex); 1316 c4iw_init_wr_wait(&epc->wr_wait); 1317 1318 return (epc); 1319} 1320 1321void _c4iw_free_ep(struct kref *kref) 1322{ 1323 struct c4iw_ep *ep; 1324#if defined(KTR) || defined(INVARIANTS) 1325 struct c4iw_ep_common *epc; 1326#endif 1327 1328 ep = container_of(kref, struct c4iw_ep, com.kref); 1329#if defined(KTR) || defined(INVARIANTS) 1330 epc = &ep->com; 1331#endif 1332 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list", 1333 __func__, epc)); 1334 if (test_bit(QP_REFERENCED, &ep->com.flags)) 1335 deref_qp(ep); 1336 CTR4(KTR_IW_CXGBE, "%s: ep %p, history 0x%lx, flags 0x%lx", 1337 __func__, ep, epc->history, epc->flags); 1338 kfree(ep); 1339} 1340 1341static void release_ep_resources(struct c4iw_ep *ep) 1342{ 1343 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep); 1344 set_bit(RELEASE_RESOURCES, &ep->com.flags); 1345 c4iw_put_ep(&ep->com); 1346 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep); 1347} 1348 1349static int 1350send_mpa_req(struct c4iw_ep *ep) 1351{ 1352 int mpalen; 1353 struct mpa_message *mpa; 1354 struct mpa_v2_conn_params mpa_v2_params; 1355 struct mbuf *m; 1356 char mpa_rev_to_use = mpa_rev; 1357 int err = 0; 1358 1359 if (ep->retry_with_mpa_v1) 1360 mpa_rev_to_use = 1; 1361 mpalen = sizeof(*mpa) + ep->plen; 1362 if (mpa_rev_to_use == 2) 1363 mpalen += sizeof(struct mpa_v2_conn_params); 1364 1365 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1366 if (mpa == NULL) { 1367 err = -ENOMEM; 1368 CTR3(KTR_IW_CXGBE, "%s:smr1 ep: %p , error: %d", 1369 __func__, ep, err); 1370 goto err; 1371 } 1372 1373 memset(mpa, 0, mpalen); 1374 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 1375 mpa->flags = (crc_enabled ? MPA_CRC : 0) | 1376 (markers_enabled ? MPA_MARKERS : 0) | 1377 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); 1378 mpa->private_data_size = htons(ep->plen); 1379 mpa->revision = mpa_rev_to_use; 1380 1381 if (mpa_rev_to_use == 1) { 1382 ep->tried_with_mpa_v1 = 1; 1383 ep->retry_with_mpa_v1 = 0; 1384 } 1385 1386 if (mpa_rev_to_use == 2) { 1387 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1388 sizeof(struct mpa_v2_conn_params)); 1389 mpa_v2_params.ird = htons((u16)ep->ird); 1390 mpa_v2_params.ord = htons((u16)ep->ord); 1391 1392 if (peer2peer) { 1393 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1394 1395 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1396 mpa_v2_params.ord |= 1397 htons(MPA_V2_RDMA_WRITE_RTR); 1398 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1399 mpa_v2_params.ord |= 1400 htons(MPA_V2_RDMA_READ_RTR); 1401 } 1402 } 1403 memcpy(mpa->private_data, &mpa_v2_params, 1404 sizeof(struct mpa_v2_conn_params)); 1405 1406 if (ep->plen) { 1407 1408 memcpy(mpa->private_data + 1409 sizeof(struct mpa_v2_conn_params), 1410 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1411 } 1412 } else { 1413 1414 if (ep->plen) 1415 memcpy(mpa->private_data, 1416 ep->mpa_pkt + sizeof(*mpa), ep->plen); 1417 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep); 1418 } 1419 1420 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1421 if (m == NULL) { 1422 err = -ENOMEM; 1423 CTR3(KTR_IW_CXGBE, "%s:smr2 ep: %p , error: %d", 1424 __func__, ep, err); 1425 free(mpa, M_CXGBE); 1426 goto err; 1427 } 1428 m_copyback(m, 0, mpalen, (void *)mpa); 1429 free(mpa, M_CXGBE); 1430 1431 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1432 ep->com.thread); 1433 if (err) { 1434 CTR3(KTR_IW_CXGBE, "%s:smr3 ep: %p , error: %d", 1435 __func__, ep, err); 1436 goto err; 1437 } 1438 1439 START_EP_TIMER(ep); 1440 ep->com.state = MPA_REQ_SENT; 1441 ep->mpa_attr.initiator = 1; 1442 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1443 return 0; 1444err: 1445 connect_reply_upcall(ep, err); 1446 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err); 1447 return err; 1448} 1449 1450static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 1451{ 1452 int mpalen ; 1453 struct mpa_message *mpa; 1454 struct mpa_v2_conn_params mpa_v2_params; 1455 struct mbuf *m; 1456 int err; 1457 1458 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid, 1459 ep->plen); 1460 1461 mpalen = sizeof(*mpa) + plen; 1462 1463 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1464 1465 mpalen += sizeof(struct mpa_v2_conn_params); 1466 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep, 1467 ep->mpa_attr.version, mpalen); 1468 } 1469 1470 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1471 if (mpa == NULL) 1472 return (-ENOMEM); 1473 1474 memset(mpa, 0, mpalen); 1475 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1476 mpa->flags = MPA_REJECT; 1477 mpa->revision = mpa_rev; 1478 mpa->private_data_size = htons(plen); 1479 1480 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1481 1482 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1483 mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1484 sizeof(struct mpa_v2_conn_params)); 1485 mpa_v2_params.ird = htons(((u16)ep->ird) | 1486 (peer2peer ? MPA_V2_PEER2PEER_MODEL : 1487 0)); 1488 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 1489 (p2p_type == 1490 FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 1491 MPA_V2_RDMA_WRITE_RTR : p2p_type == 1492 FW_RI_INIT_P2PTYPE_READ_REQ ? 1493 MPA_V2_RDMA_READ_RTR : 0) : 0)); 1494 memcpy(mpa->private_data, &mpa_v2_params, 1495 sizeof(struct mpa_v2_conn_params)); 1496 1497 if (ep->plen) 1498 memcpy(mpa->private_data + 1499 sizeof(struct mpa_v2_conn_params), pdata, plen); 1500 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep, 1501 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen); 1502 } else 1503 if (plen) 1504 memcpy(mpa->private_data, pdata, plen); 1505 1506 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1507 if (m == NULL) { 1508 free(mpa, M_CXGBE); 1509 return (-ENOMEM); 1510 } 1511 m_copyback(m, 0, mpalen, (void *)mpa); 1512 free(mpa, M_CXGBE); 1513 1514 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread); 1515 if (!err) 1516 ep->snd_seq += mpalen; 1517 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err); 1518 return err; 1519} 1520 1521static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 1522{ 1523 int mpalen; 1524 struct mpa_message *mpa; 1525 struct mbuf *m; 1526 struct mpa_v2_conn_params mpa_v2_params; 1527 int err; 1528 1529 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep); 1530 1531 mpalen = sizeof(*mpa) + plen; 1532 1533 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1534 1535 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep, 1536 ep->mpa_attr.version); 1537 mpalen += sizeof(struct mpa_v2_conn_params); 1538 } 1539 1540 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT); 1541 if (mpa == NULL) 1542 return (-ENOMEM); 1543 1544 memset(mpa, 0, sizeof(*mpa)); 1545 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1546 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 1547 (markers_enabled ? MPA_MARKERS : 0); 1548 mpa->revision = ep->mpa_attr.version; 1549 mpa->private_data_size = htons(plen); 1550 1551 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1552 1553 mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1554 mpa->private_data_size += 1555 htons(sizeof(struct mpa_v2_conn_params)); 1556 mpa_v2_params.ird = htons((u16)ep->ird); 1557 mpa_v2_params.ord = htons((u16)ep->ord); 1558 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep, 1559 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord); 1560 1561 if (peer2peer && (ep->mpa_attr.p2p_type != 1562 FW_RI_INIT_P2PTYPE_DISABLED)) { 1563 1564 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1565 1566 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) { 1567 1568 mpa_v2_params.ord |= 1569 htons(MPA_V2_RDMA_WRITE_RTR); 1570 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d", 1571 __func__, ep, p2p_type, mpa_v2_params.ird, 1572 mpa_v2_params.ord); 1573 } 1574 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) { 1575 1576 mpa_v2_params.ord |= 1577 htons(MPA_V2_RDMA_READ_RTR); 1578 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d", 1579 __func__, ep, p2p_type, mpa_v2_params.ird, 1580 mpa_v2_params.ord); 1581 } 1582 } 1583 1584 memcpy(mpa->private_data, &mpa_v2_params, 1585 sizeof(struct mpa_v2_conn_params)); 1586 1587 if (ep->plen) 1588 memcpy(mpa->private_data + 1589 sizeof(struct mpa_v2_conn_params), pdata, plen); 1590 } else 1591 if (plen) 1592 memcpy(mpa->private_data, pdata, plen); 1593 1594 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA); 1595 if (m == NULL) { 1596 free(mpa, M_CXGBE); 1597 return (-ENOMEM); 1598 } 1599 m_copyback(m, 0, mpalen, (void *)mpa); 1600 free(mpa, M_CXGBE); 1601 1602 1603 ep->com.state = MPA_REP_SENT; 1604 ep->snd_seq += mpalen; 1605 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, 1606 ep->com.thread); 1607 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err); 1608 return err; 1609} 1610 1611 1612 1613static void close_complete_upcall(struct c4iw_ep *ep, int status) 1614{ 1615 struct iw_cm_event event; 1616 1617 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep); 1618 memset(&event, 0, sizeof(event)); 1619 event.event = IW_CM_EVENT_CLOSE; 1620 event.status = status; 1621 1622 if (ep->com.cm_id) { 1623 1624 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep); 1625 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1626 deref_cm_id(&ep->com); 1627 set_bit(CLOSE_UPCALL, &ep->com.history); 1628 } 1629 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep); 1630} 1631 1632static int 1633send_abort(struct c4iw_ep *ep) 1634{ 1635 struct socket *so = ep->com.so; 1636 struct sockopt sopt; 1637 int rc; 1638 struct linger l; 1639 1640 CTR5(KTR_IW_CXGBE, "%s ep %p so %p state %s tid %d", __func__, ep, so, 1641 states[ep->com.state], ep->hwtid); 1642 1643 l.l_onoff = 1; 1644 l.l_linger = 0; 1645 1646 /* linger_time of 0 forces RST to be sent */ 1647 sopt.sopt_dir = SOPT_SET; 1648 sopt.sopt_level = SOL_SOCKET; 1649 sopt.sopt_name = SO_LINGER; 1650 sopt.sopt_val = (caddr_t)&l; 1651 sopt.sopt_valsize = sizeof l; 1652 sopt.sopt_td = NULL; 1653 rc = -sosetopt(so, &sopt); 1654 if (rc != 0) { 1655 log(LOG_ERR, "%s: sosetopt(%p, linger = 0) failed with %d.\n", 1656 __func__, so, rc); 1657 } 1658 1659 uninit_iwarp_socket(so); 1660 soclose(so); 1661 set_bit(ABORT_CONN, &ep->com.history); 1662 1663 /* 1664 * TBD: iw_cxgbe driver should receive ABORT reply for every ABORT 1665 * request it has sent. But the current TOE driver is not propagating 1666 * this ABORT reply event (via do_abort_rpl) to iw_cxgbe. So as a work- 1667 * around de-refererece 'ep' here instead of doing it in abort_rpl() 1668 * handler(not yet implemented) of iw_cxgbe driver. 1669 */ 1670 release_ep_resources(ep); 1671 ep->com.state = DEAD; 1672 1673 return (0); 1674} 1675 1676static void peer_close_upcall(struct c4iw_ep *ep) 1677{ 1678 struct iw_cm_event event; 1679 1680 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep); 1681 memset(&event, 0, sizeof(event)); 1682 event.event = IW_CM_EVENT_DISCONNECT; 1683 1684 if (ep->com.cm_id) { 1685 1686 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep); 1687 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1688 set_bit(DISCONN_UPCALL, &ep->com.history); 1689 } 1690 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep); 1691} 1692 1693static void peer_abort_upcall(struct c4iw_ep *ep) 1694{ 1695 struct iw_cm_event event; 1696 1697 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep); 1698 memset(&event, 0, sizeof(event)); 1699 event.event = IW_CM_EVENT_CLOSE; 1700 event.status = -ECONNRESET; 1701 1702 if (ep->com.cm_id) { 1703 1704 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep); 1705 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1706 deref_cm_id(&ep->com); 1707 set_bit(ABORT_UPCALL, &ep->com.history); 1708 } 1709 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep); 1710} 1711 1712static void connect_reply_upcall(struct c4iw_ep *ep, int status) 1713{ 1714 struct iw_cm_event event; 1715 1716 CTR3(KTR_IW_CXGBE, "%s:cruB %p, status: %d", __func__, ep, status); 1717 memset(&event, 0, sizeof(event)); 1718 event.event = IW_CM_EVENT_CONNECT_REPLY; 1719 event.status = ((status == -ECONNABORTED) || (status == -EPIPE)) ? 1720 -ECONNRESET : status; 1721 event.local_addr = ep->com.local_addr; 1722 event.remote_addr = ep->com.remote_addr; 1723 1724 if ((status == 0) || (status == -ECONNREFUSED)) { 1725 1726 if (!ep->tried_with_mpa_v1) { 1727 1728 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep); 1729 /* this means MPA_v2 is used */ 1730 event.ord = ep->ird; 1731 event.ird = ep->ord; 1732 event.private_data_len = ep->plen - 1733 sizeof(struct mpa_v2_conn_params); 1734 event.private_data = ep->mpa_pkt + 1735 sizeof(struct mpa_message) + 1736 sizeof(struct mpa_v2_conn_params); 1737 } else { 1738 1739 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep); 1740 /* this means MPA_v1 is used */ 1741 event.ord = c4iw_max_read_depth; 1742 event.ird = c4iw_max_read_depth; 1743 event.private_data_len = ep->plen; 1744 event.private_data = ep->mpa_pkt + 1745 sizeof(struct mpa_message); 1746 } 1747 } 1748 1749 if (ep->com.cm_id) { 1750 1751 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep); 1752 set_bit(CONN_RPL_UPCALL, &ep->com.history); 1753 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1754 } 1755 1756 if(status == -ECONNABORTED) { 1757 1758 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status); 1759 return; 1760 } 1761 1762 if (status < 0) { 1763 1764 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status); 1765 deref_cm_id(&ep->com); 1766 } 1767 1768 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep); 1769} 1770 1771static int connect_request_upcall(struct c4iw_ep *ep) 1772{ 1773 struct iw_cm_event event; 1774 int ret; 1775 1776 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep, 1777 ep->tried_with_mpa_v1); 1778 1779 memset(&event, 0, sizeof(event)); 1780 event.event = IW_CM_EVENT_CONNECT_REQUEST; 1781 event.local_addr = ep->com.local_addr; 1782 event.remote_addr = ep->com.remote_addr; 1783 event.provider_data = ep; 1784 1785 if (!ep->tried_with_mpa_v1) { 1786 /* this means MPA_v2 is used */ 1787 event.ord = ep->ord; 1788 event.ird = ep->ird; 1789 event.private_data_len = ep->plen - 1790 sizeof(struct mpa_v2_conn_params); 1791 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 1792 sizeof(struct mpa_v2_conn_params); 1793 } else { 1794 1795 /* this means MPA_v1 is used. Send max supported */ 1796 event.ord = c4iw_max_read_depth; 1797 event.ird = c4iw_max_read_depth; 1798 event.private_data_len = ep->plen; 1799 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 1800 } 1801 1802 c4iw_get_ep(&ep->com); 1803 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, 1804 &event); 1805 if(ret) { 1806 CTR3(KTR_IW_CXGBE, "%s: ep %p, Failure while notifying event to" 1807 " IWCM, err:%d", __func__, ep, ret); 1808 c4iw_put_ep(&ep->com); 1809 } else 1810 /* Dereference parent_ep only in success case. 1811 * In case of failure, parent_ep is dereferenced by the caller 1812 * of process_mpa_request(). 1813 */ 1814 c4iw_put_ep(&ep->parent_ep->com); 1815 1816 set_bit(CONNREQ_UPCALL, &ep->com.history); 1817 return ret; 1818} 1819 1820static void established_upcall(struct c4iw_ep *ep) 1821{ 1822 struct iw_cm_event event; 1823 1824 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep); 1825 memset(&event, 0, sizeof(event)); 1826 event.event = IW_CM_EVENT_ESTABLISHED; 1827 event.ird = ep->ord; 1828 event.ord = ep->ird; 1829 1830 if (ep->com.cm_id) { 1831 1832 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep); 1833 ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1834 set_bit(ESTAB_UPCALL, &ep->com.history); 1835 } 1836 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep); 1837} 1838 1839 1840#define RELAXED_IRD_NEGOTIATION 1 1841 1842/* 1843 * process_mpa_reply - process streaming mode MPA reply 1844 * 1845 * Returns: 1846 * 1847 * 0 upon success indicating a connect request was delivered to the ULP 1848 * or the mpa request is incomplete but valid so far. 1849 * 1850 * 1 if a failure requires the caller to close the connection. 1851 * 1852 * 2 if a failure requires the caller to abort the connection. 1853 */ 1854static int process_mpa_reply(struct c4iw_ep *ep) 1855{ 1856 struct mpa_message *mpa; 1857 struct mpa_v2_conn_params *mpa_v2_params; 1858 u16 plen; 1859 u16 resp_ird, resp_ord; 1860 u8 rtr_mismatch = 0, insuff_ird = 0; 1861 struct c4iw_qp_attributes attrs = {0}; 1862 enum c4iw_qp_attr_mask mask; 1863 int err; 1864 struct mbuf *top, *m; 1865 int flags = MSG_DONTWAIT; 1866 struct uio uio; 1867 int disconnect = 0; 1868 1869 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep); 1870 1871 /* 1872 * Stop mpa timer. If it expired, then 1873 * we ignore the MPA reply. process_timeout() 1874 * will abort the connection. 1875 */ 1876 if (STOP_EP_TIMER(ep)) 1877 return 0; 1878 1879 uio.uio_resid = 1000000; 1880 uio.uio_td = ep->com.thread; 1881 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags); 1882 1883 if (err) { 1884 1885 if (err == EWOULDBLOCK) { 1886 1887 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep); 1888 START_EP_TIMER(ep); 1889 return 0; 1890 } 1891 err = -err; 1892 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep); 1893 goto err; 1894 } 1895 1896 if (ep->com.so->so_rcv.sb_mb) { 1897 1898 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep); 1899 printf("%s data after soreceive called! so %p sb_mb %p top %p\n", 1900 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top); 1901 } 1902 1903 m = top; 1904 1905 do { 1906 1907 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep); 1908 /* 1909 * If we get more than the supported amount of private data 1910 * then we must fail this connection. 1911 */ 1912 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) { 1913 1914 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep, 1915 ep->mpa_pkt_len + m->m_len); 1916 err = (-EINVAL); 1917 goto err_stop_timer; 1918 } 1919 1920 /* 1921 * copy the new data into our accumulation buffer. 1922 */ 1923 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len])); 1924 ep->mpa_pkt_len += m->m_len; 1925 if (!m->m_next) 1926 m = m->m_nextpkt; 1927 else 1928 m = m->m_next; 1929 } while (m); 1930 1931 m_freem(top); 1932 /* 1933 * if we don't even have the mpa message, then bail. 1934 */ 1935 if (ep->mpa_pkt_len < sizeof(*mpa)) { 1936 return 0; 1937 } 1938 mpa = (struct mpa_message *) ep->mpa_pkt; 1939 1940 /* Validate MPA header. */ 1941 if (mpa->revision > mpa_rev) { 1942 1943 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep, 1944 mpa->revision, mpa_rev); 1945 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, " 1946 " Received = %d\n", __func__, mpa_rev, mpa->revision); 1947 err = -EPROTO; 1948 goto err_stop_timer; 1949 } 1950 1951 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1952 1953 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep); 1954 err = -EPROTO; 1955 goto err_stop_timer; 1956 } 1957 1958 plen = ntohs(mpa->private_data_size); 1959 1960 /* 1961 * Fail if there's too much private data. 1962 */ 1963 if (plen > MPA_MAX_PRIVATE_DATA) { 1964 1965 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep); 1966 err = -EPROTO; 1967 goto err_stop_timer; 1968 } 1969 1970 /* 1971 * If plen does not account for pkt size 1972 */ 1973 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1974 1975 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep); 1976 STOP_EP_TIMER(ep); 1977 err = -EPROTO; 1978 goto err_stop_timer; 1979 } 1980 1981 ep->plen = (u8) plen; 1982 1983 /* 1984 * If we don't have all the pdata yet, then bail. 1985 * We'll continue process when more data arrives. 1986 */ 1987 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) { 1988 1989 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep); 1990 return 0; 1991 } 1992 1993 if (mpa->flags & MPA_REJECT) { 1994 1995 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep); 1996 err = -ECONNREFUSED; 1997 goto err_stop_timer; 1998 } 1999 2000 /* 2001 * If we get here we have accumulated the entire mpa 2002 * start reply message including private data. And 2003 * the MPA header is valid. 2004 */ 2005 ep->com.state = FPDU_MODE; 2006 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2007 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2008 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2009 ep->mpa_attr.version = mpa->revision; 2010 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2011 2012 if (mpa->revision == 2) { 2013 2014 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep); 2015 ep->mpa_attr.enhanced_rdma_conn = 2016 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2017 2018 if (ep->mpa_attr.enhanced_rdma_conn) { 2019 2020 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep); 2021 mpa_v2_params = (struct mpa_v2_conn_params *) 2022 (ep->mpa_pkt + sizeof(*mpa)); 2023 resp_ird = ntohs(mpa_v2_params->ird) & 2024 MPA_V2_IRD_ORD_MASK; 2025 resp_ord = ntohs(mpa_v2_params->ord) & 2026 MPA_V2_IRD_ORD_MASK; 2027 2028 /* 2029 * This is a double-check. Ideally, below checks are 2030 * not required since ird/ord stuff has been taken 2031 * care of in c4iw_accept_cr 2032 */ 2033 if (ep->ird < resp_ord) { 2034 if (RELAXED_IRD_NEGOTIATION && resp_ord <= 2035 ep->com.dev->rdev.adap->params.max_ordird_qp) 2036 ep->ird = resp_ord; 2037 else 2038 insuff_ird = 1; 2039 } else if (ep->ird > resp_ord) { 2040 ep->ird = resp_ord; 2041 } 2042 if (ep->ord > resp_ird) { 2043 if (RELAXED_IRD_NEGOTIATION) 2044 ep->ord = resp_ird; 2045 else 2046 insuff_ird = 1; 2047 } 2048 if (insuff_ird) { 2049 err = -ENOMEM; 2050 ep->ird = resp_ord; 2051 ep->ord = resp_ird; 2052 } 2053 2054 if (ntohs(mpa_v2_params->ird) & 2055 MPA_V2_PEER2PEER_MODEL) { 2056 2057 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep); 2058 if (ntohs(mpa_v2_params->ord) & 2059 MPA_V2_RDMA_WRITE_RTR) { 2060 2061 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep); 2062 ep->mpa_attr.p2p_type = 2063 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2064 } 2065 else if (ntohs(mpa_v2_params->ord) & 2066 MPA_V2_RDMA_READ_RTR) { 2067 2068 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep); 2069 ep->mpa_attr.p2p_type = 2070 FW_RI_INIT_P2PTYPE_READ_REQ; 2071 } 2072 } 2073 } 2074 } else { 2075 2076 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep); 2077 2078 if (mpa->revision == 1) { 2079 2080 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep); 2081 2082 if (peer2peer) { 2083 2084 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep); 2085 ep->mpa_attr.p2p_type = p2p_type; 2086 } 2087 } 2088 } 2089 2090 if (set_tcpinfo(ep)) { 2091 2092 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep); 2093 printf("%s set_tcpinfo error\n", __func__); 2094 err = -ECONNRESET; 2095 goto err; 2096 } 2097 2098 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, " 2099 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__, 2100 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2101 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 2102 ep->mpa_attr.p2p_type); 2103 2104 /* 2105 * If responder's RTR does not match with that of initiator, assign 2106 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 2107 * generated when moving QP to RTS state. 2108 * A TERM message will be sent after QP has moved to RTS state 2109 */ 2110 if ((ep->mpa_attr.version == 2) && peer2peer && 2111 (ep->mpa_attr.p2p_type != p2p_type)) { 2112 2113 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep); 2114 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2115 rtr_mismatch = 1; 2116 } 2117 2118 2119 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2120 attrs.mpa_attr = ep->mpa_attr; 2121 attrs.max_ird = ep->ird; 2122 attrs.max_ord = ep->ord; 2123 attrs.llp_stream_handle = ep; 2124 attrs.next_state = C4IW_QP_STATE_RTS; 2125 2126 mask = C4IW_QP_ATTR_NEXT_STATE | 2127 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 2128 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 2129 2130 /* bind QP and TID with INIT_WR */ 2131 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2132 2133 if (err) { 2134 2135 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep); 2136 goto err; 2137 } 2138 2139 /* 2140 * If responder's RTR requirement did not match with what initiator 2141 * supports, generate TERM message 2142 */ 2143 if (rtr_mismatch) { 2144 2145 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep); 2146 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 2147 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2148 attrs.ecode = MPA_NOMATCH_RTR; 2149 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2150 attrs.send_term = 1; 2151 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2152 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2153 err = -ENOMEM; 2154 disconnect = 1; 2155 goto out; 2156 } 2157 2158 /* 2159 * Generate TERM if initiator IRD is not sufficient for responder 2160 * provided ORD. Currently, we do the same behaviour even when 2161 * responder provided IRD is also not sufficient as regards to 2162 * initiator ORD. 2163 */ 2164 if (insuff_ird) { 2165 2166 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep); 2167 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 2168 __func__); 2169 attrs.layer_etype = LAYER_MPA | DDP_LLP; 2170 attrs.ecode = MPA_INSUFF_IRD; 2171 attrs.next_state = C4IW_QP_STATE_TERMINATE; 2172 attrs.send_term = 1; 2173 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2174 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2175 err = -ENOMEM; 2176 disconnect = 1; 2177 goto out; 2178 } 2179 goto out; 2180err_stop_timer: 2181 STOP_EP_TIMER(ep); 2182err: 2183 disconnect = 2; 2184out: 2185 connect_reply_upcall(ep, err); 2186 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep); 2187 return disconnect; 2188} 2189 2190/* 2191 * process_mpa_request - process streaming mode MPA request 2192 * 2193 * Returns: 2194 * 2195 * 0 upon success indicating a connect request was delivered to the ULP 2196 * or the mpa request is incomplete but valid so far. 2197 * 2198 * 1 if a failure requires the caller to close the connection. 2199 * 2200 * 2 if a failure requires the caller to abort the connection. 2201 */ 2202static int 2203process_mpa_request(struct c4iw_ep *ep) 2204{ 2205 struct mpa_message *mpa; 2206 struct mpa_v2_conn_params *mpa_v2_params; 2207 u16 plen; 2208 int flags = MSG_DONTWAIT; 2209 int rc; 2210 struct iovec iov; 2211 struct uio uio; 2212 enum c4iw_ep_state state = ep->com.state; 2213 2214 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]); 2215 2216 if (state != MPA_REQ_WAIT) 2217 return 0; 2218 2219 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len]; 2220 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2221 uio.uio_iov = &iov; 2222 uio.uio_iovcnt = 1; 2223 uio.uio_offset = 0; 2224 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len; 2225 uio.uio_segflg = UIO_SYSSPACE; 2226 uio.uio_rw = UIO_READ; 2227 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */ 2228 2229 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags); 2230 if (rc == EAGAIN) 2231 return 0; 2232 else if (rc) 2233 goto err_stop_timer; 2234 2235 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data", 2236 __func__, ep->com.so)); 2237 ep->mpa_pkt_len += uio.uio_offset; 2238 2239 /* 2240 * If we get more than the supported amount of private data then we must 2241 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another 2242 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last 2243 * byte is filled by the soreceive above. 2244 */ 2245 2246 /* Don't even have the MPA message. Wait for more data to arrive. */ 2247 if (ep->mpa_pkt_len < sizeof(*mpa)) 2248 return 0; 2249 mpa = (struct mpa_message *) ep->mpa_pkt; 2250 2251 /* 2252 * Validate MPA Header. 2253 */ 2254 if (mpa->revision > mpa_rev) { 2255 log(LOG_ERR, "%s: MPA version mismatch. Local = %d," 2256 " Received = %d\n", __func__, mpa_rev, mpa->revision); 2257 goto err_stop_timer; 2258 } 2259 2260 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) 2261 goto err_stop_timer; 2262 2263 /* 2264 * Fail if there's too much private data. 2265 */ 2266 plen = ntohs(mpa->private_data_size); 2267 if (plen > MPA_MAX_PRIVATE_DATA) 2268 goto err_stop_timer; 2269 2270 /* 2271 * If plen does not account for pkt size 2272 */ 2273 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) 2274 goto err_stop_timer; 2275 2276 ep->plen = (u8) plen; 2277 2278 /* 2279 * If we don't have all the pdata yet, then bail. 2280 */ 2281 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 2282 return 0; 2283 2284 /* 2285 * If we get here we have accumulated the entire mpa 2286 * start reply message including private data. 2287 */ 2288 ep->mpa_attr.initiator = 0; 2289 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 2290 ep->mpa_attr.recv_marker_enabled = markers_enabled; 2291 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 2292 ep->mpa_attr.version = mpa->revision; 2293 if (mpa->revision == 1) 2294 ep->tried_with_mpa_v1 = 1; 2295 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 2296 2297 if (mpa->revision == 2) { 2298 ep->mpa_attr.enhanced_rdma_conn = 2299 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 2300 if (ep->mpa_attr.enhanced_rdma_conn) { 2301 mpa_v2_params = (struct mpa_v2_conn_params *) 2302 (ep->mpa_pkt + sizeof(*mpa)); 2303 ep->ird = ntohs(mpa_v2_params->ird) & 2304 MPA_V2_IRD_ORD_MASK; 2305 ep->ird = min_t(u32, ep->ird, 2306 cur_max_read_depth(ep->com.dev)); 2307 ep->ord = ntohs(mpa_v2_params->ord) & 2308 MPA_V2_IRD_ORD_MASK; 2309 ep->ord = min_t(u32, ep->ord, 2310 cur_max_read_depth(ep->com.dev)); 2311 CTR3(KTR_IW_CXGBE, "%s initiator ird %u ord %u", 2312 __func__, ep->ird, ep->ord); 2313 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) 2314 if (peer2peer) { 2315 if (ntohs(mpa_v2_params->ord) & 2316 MPA_V2_RDMA_WRITE_RTR) 2317 ep->mpa_attr.p2p_type = 2318 FW_RI_INIT_P2PTYPE_RDMA_WRITE; 2319 else if (ntohs(mpa_v2_params->ord) & 2320 MPA_V2_RDMA_READ_RTR) 2321 ep->mpa_attr.p2p_type = 2322 FW_RI_INIT_P2PTYPE_READ_REQ; 2323 } 2324 } 2325 } else if (mpa->revision == 1 && peer2peer) 2326 ep->mpa_attr.p2p_type = p2p_type; 2327 2328 if (set_tcpinfo(ep)) 2329 goto err_stop_timer; 2330 2331 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, " 2332 "xmit_marker_enabled = %d, version = %d", __func__, 2333 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 2334 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); 2335 2336 ep->com.state = MPA_REQ_RCVD; 2337 STOP_EP_TIMER(ep); 2338 2339 /* drive upcall */ 2340 if (ep->parent_ep->com.state != DEAD) 2341 if (connect_request_upcall(ep)) 2342 goto err_out; 2343 return 0; 2344 2345err_stop_timer: 2346 STOP_EP_TIMER(ep); 2347err_out: 2348 return 2; 2349} 2350 2351/* 2352 * Upcall from the adapter indicating data has been transmitted. 2353 * For us its just the single MPA request or reply. We can now free 2354 * the skb holding the mpa message. 2355 */ 2356int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 2357{ 2358#ifdef KTR 2359 int err; 2360#endif 2361 struct c4iw_ep *ep = to_ep(cm_id); 2362 int abort = 0; 2363 2364 mutex_lock(&ep->com.mutex); 2365 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep); 2366 2367 if ((ep->com.state == DEAD) || 2368 (ep->com.state != MPA_REQ_RCVD)) { 2369 2370 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep); 2371 mutex_unlock(&ep->com.mutex); 2372 c4iw_put_ep(&ep->com); 2373 return -ECONNRESET; 2374 } 2375 set_bit(ULP_REJECT, &ep->com.history); 2376 2377 if (mpa_rev == 0) { 2378 2379 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep); 2380 abort = 1; 2381 } 2382 else { 2383 2384 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep); 2385 abort = send_mpa_reject(ep, pdata, pdata_len); 2386 } 2387 STOP_EP_TIMER(ep); 2388#ifdef KTR 2389 err = c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2390#else 2391 c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 2392#endif 2393 mutex_unlock(&ep->com.mutex); 2394 c4iw_put_ep(&ep->com); 2395 CTR3(KTR_IW_CXGBE, "%s:crc4 %p, err: %d", __func__, ep, err); 2396 return 0; 2397} 2398 2399int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2400{ 2401 int err; 2402 struct c4iw_qp_attributes attrs = {0}; 2403 enum c4iw_qp_attr_mask mask; 2404 struct c4iw_ep *ep = to_ep(cm_id); 2405 struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 2406 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 2407 int abort = 0; 2408 2409 mutex_lock(&ep->com.mutex); 2410 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep); 2411 2412 if ((ep->com.state == DEAD) || 2413 (ep->com.state != MPA_REQ_RCVD)) { 2414 2415 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep); 2416 err = -ECONNRESET; 2417 goto err_out; 2418 } 2419 2420 BUG_ON(!qp); 2421 2422 set_bit(ULP_ACCEPT, &ep->com.history); 2423 2424 if ((conn_param->ord > c4iw_max_read_depth) || 2425 (conn_param->ird > c4iw_max_read_depth)) { 2426 2427 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep); 2428 err = -EINVAL; 2429 goto err_abort; 2430 } 2431 2432 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 2433 2434 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep); 2435 2436 if (conn_param->ord > ep->ird) { 2437 if (RELAXED_IRD_NEGOTIATION) { 2438 conn_param->ord = ep->ird; 2439 } else { 2440 ep->ird = conn_param->ird; 2441 ep->ord = conn_param->ord; 2442 send_mpa_reject(ep, conn_param->private_data, 2443 conn_param->private_data_len); 2444 err = -ENOMEM; 2445 goto err_abort; 2446 } 2447 } 2448 if (conn_param->ird < ep->ord) { 2449 if (RELAXED_IRD_NEGOTIATION && 2450 ep->ord <= h->rdev.adap->params.max_ordird_qp) { 2451 conn_param->ird = ep->ord; 2452 } else { 2453 err = -ENOMEM; 2454 goto err_abort; 2455 } 2456 } 2457 } 2458 ep->ird = conn_param->ird; 2459 ep->ord = conn_param->ord; 2460 2461 if (ep->mpa_attr.version == 1) { 2462 if (peer2peer && ep->ird == 0) 2463 ep->ird = 1; 2464 } else { 2465 if (peer2peer && 2466 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) && 2467 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0) 2468 ep->ird = 1; 2469 } 2470 2471 CTR4(KTR_IW_CXGBE, "%s %d ird %d ord %d", __func__, __LINE__, 2472 ep->ird, ep->ord); 2473 2474 ep->com.cm_id = cm_id; 2475 ref_cm_id(&ep->com); 2476 ep->com.qp = qp; 2477 ref_qp(ep); 2478 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq; 2479 2480 /* bind QP to EP and move to RTS */ 2481 attrs.mpa_attr = ep->mpa_attr; 2482 attrs.max_ird = ep->ird; 2483 attrs.max_ord = ep->ord; 2484 attrs.llp_stream_handle = ep; 2485 attrs.next_state = C4IW_QP_STATE_RTS; 2486 2487 /* bind QP and TID with INIT_WR */ 2488 mask = C4IW_QP_ATTR_NEXT_STATE | 2489 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 2490 C4IW_QP_ATTR_MPA_ATTR | 2491 C4IW_QP_ATTR_MAX_IRD | 2492 C4IW_QP_ATTR_MAX_ORD; 2493 2494 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1); 2495 if (err) { 2496 CTR3(KTR_IW_CXGBE, "%s:caca %p, err: %d", __func__, ep, err); 2497 goto err_defef_cm_id; 2498 } 2499 2500 err = send_mpa_reply(ep, conn_param->private_data, 2501 conn_param->private_data_len); 2502 if (err) { 2503 CTR3(KTR_IW_CXGBE, "%s:cacb %p, err: %d", __func__, ep, err); 2504 goto err_defef_cm_id; 2505 } 2506 2507 ep->com.state = FPDU_MODE; 2508 established_upcall(ep); 2509 mutex_unlock(&ep->com.mutex); 2510 c4iw_put_ep(&ep->com); 2511 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep); 2512 return 0; 2513err_defef_cm_id: 2514 deref_cm_id(&ep->com); 2515err_abort: 2516 abort = 1; 2517err_out: 2518 if (abort) 2519 c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 2520 mutex_unlock(&ep->com.mutex); 2521 c4iw_put_ep(&ep->com); 2522 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep); 2523 return err; 2524} 2525 2526static int 2527c4iw_sock_create(struct sockaddr_storage *laddr, struct socket **so) 2528{ 2529 int ret; 2530 int size, on; 2531 struct socket *sock = NULL; 2532 struct sockopt sopt; 2533 2534 ret = sock_create_kern(laddr->ss_family, 2535 SOCK_STREAM, IPPROTO_TCP, &sock); 2536 if (ret) { 2537 CTR2(KTR_IW_CXGBE, "%s:Failed to create TCP socket. err %d", 2538 __func__, ret); 2539 return ret; 2540 } 2541 2542 if (reuseaddr) { 2543 bzero(&sopt, sizeof(struct sockopt)); 2544 sopt.sopt_dir = SOPT_SET; 2545 sopt.sopt_level = SOL_SOCKET; 2546 sopt.sopt_name = SO_REUSEADDR; 2547 on = 1; 2548 sopt.sopt_val = &on; 2549 sopt.sopt_valsize = sizeof(on); 2550 ret = -sosetopt(sock, &sopt); 2551 if (ret != 0) { 2552 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEADDR) " 2553 "failed with %d.\n", __func__, sock, ret); 2554 } 2555 bzero(&sopt, sizeof(struct sockopt)); 2556 sopt.sopt_dir = SOPT_SET; 2557 sopt.sopt_level = SOL_SOCKET; 2558 sopt.sopt_name = SO_REUSEPORT; 2559 on = 1; 2560 sopt.sopt_val = &on; 2561 sopt.sopt_valsize = sizeof(on); 2562 ret = -sosetopt(sock, &sopt); 2563 if (ret != 0) { 2564 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEPORT) " 2565 "failed with %d.\n", __func__, sock, ret); 2566 } 2567 } 2568 2569 ret = -sobind(sock, (struct sockaddr *)laddr, curthread); 2570 if (ret) { 2571 CTR2(KTR_IW_CXGBE, "%s:Failed to bind socket. err %p", 2572 __func__, ret); 2573 sock_release(sock); 2574 return ret; 2575 } 2576 2577 size = laddr->ss_family == AF_INET6 ? 2578 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); 2579 ret = sock_getname(sock, (struct sockaddr *)laddr, &size, 0); 2580 if (ret) { 2581 CTR2(KTR_IW_CXGBE, "%s:sock_getname failed. err %p", 2582 __func__, ret); 2583 sock_release(sock); 2584 return ret; 2585 } 2586 2587 *so = sock; 2588 return 0; 2589} 2590 2591int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2592{ 2593 int err = 0; 2594 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2595 struct c4iw_ep *ep = NULL; 2596 if_t nh_ifp; /* Logical egress interface */ 2597 struct epoch_tracker et; 2598#ifdef VIMAGE 2599 struct rdma_cm_id *rdma_id = (struct rdma_cm_id*)cm_id->context; 2600 struct vnet *vnet = rdma_id->route.addr.dev_addr.net; 2601#endif 2602 2603 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id); 2604 2605 2606 if ((conn_param->ord > c4iw_max_read_depth) || 2607 (conn_param->ird > c4iw_max_read_depth)) { 2608 2609 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id); 2610 err = -EINVAL; 2611 goto out; 2612 } 2613 ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2614 cm_id->provider_data = ep; 2615 2616 init_timer(&ep->timer); 2617 ep->plen = conn_param->private_data_len; 2618 2619 if (ep->plen) { 2620 2621 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep); 2622 memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 2623 conn_param->private_data, ep->plen); 2624 } 2625 ep->ird = conn_param->ird; 2626 ep->ord = conn_param->ord; 2627 2628 if (peer2peer && ep->ord == 0) { 2629 2630 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep); 2631 ep->ord = 1; 2632 } 2633 2634 ep->com.dev = dev; 2635 ep->com.cm_id = cm_id; 2636 ref_cm_id(&ep->com); 2637 ep->com.qp = get_qhp(dev, conn_param->qpn); 2638 2639 if (!ep->com.qp) { 2640 2641 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep); 2642 err = -EINVAL; 2643 goto fail; 2644 } 2645 ref_qp(ep); 2646 ep->com.thread = curthread; 2647 2648 NET_EPOCH_ENTER(et); 2649 CURVNET_SET(vnet); 2650 err = get_ifnet_from_raddr(&cm_id->remote_addr, &nh_ifp); 2651 CURVNET_RESTORE(); 2652 NET_EPOCH_EXIT(et); 2653 2654 if (err) { 2655 2656 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep); 2657 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 2658 err = EHOSTUNREACH; 2659 return err; 2660 } 2661 2662 if (!(if_getcapenable(nh_ifp) & IFCAP_TOE) || 2663 TOEDEV(nh_ifp) == NULL) { 2664 err = -ENOPROTOOPT; 2665 goto fail; 2666 } 2667 ep->com.state = CONNECTING; 2668 ep->tos = 0; 2669 ep->com.local_addr = cm_id->local_addr; 2670 ep->com.remote_addr = cm_id->remote_addr; 2671 2672 err = c4iw_sock_create(&cm_id->local_addr, &ep->com.so); 2673 if (err) 2674 goto fail; 2675 2676 setiwsockopt(ep->com.so); 2677 init_iwarp_socket(ep->com.so, &ep->com); 2678 err = -soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr, 2679 ep->com.thread); 2680 if (err) 2681 goto fail_free_so; 2682 CTR2(KTR_IW_CXGBE, "%s:ccE, ep %p", __func__, ep); 2683 return 0; 2684 2685fail_free_so: 2686 uninit_iwarp_socket(ep->com.so); 2687 ep->com.state = DEAD; 2688 sock_release(ep->com.so); 2689fail: 2690 deref_cm_id(&ep->com); 2691 c4iw_put_ep(&ep->com); 2692 ep = NULL; 2693out: 2694 CTR2(KTR_IW_CXGBE, "%s:ccE Error %d", __func__, err); 2695 return err; 2696} 2697 2698/* 2699 * iwcm->create_listen. Returns -errno on failure. 2700 */ 2701int 2702c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 2703{ 2704 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2705 struct c4iw_listen_ep *lep = NULL; 2706 struct listen_port_info *port_info = NULL; 2707 int rc = 0; 2708 2709 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, backlog %s", __func__, cm_id, 2710 backlog); 2711 if (c4iw_fatal_error(&dev->rdev)) { 2712 CTR2(KTR_IW_CXGBE, "%s: cm_id %p, fatal error", __func__, 2713 cm_id); 2714 return -EIO; 2715 } 2716 lep = alloc_ep(sizeof(*lep), GFP_KERNEL); 2717 lep->com.cm_id = cm_id; 2718 ref_cm_id(&lep->com); 2719 lep->com.dev = dev; 2720 lep->backlog = backlog; 2721 lep->com.local_addr = cm_id->local_addr; 2722 lep->com.thread = curthread; 2723 cm_id->provider_data = lep; 2724 lep->com.state = LISTEN; 2725 2726 /* In case of INDADDR_ANY, ibcore creates cmid for each device and 2727 * invokes iw_cxgbe listener callbacks assuming that iw_cxgbe creates 2728 * HW listeners for each device seperately. But toecore expects single 2729 * solisten() call with INADDR_ANY address to create HW listeners on 2730 * all devices for a given port number. So iw_cxgbe driver calls 2731 * solisten() only once for INADDR_ANY(usually done at first time 2732 * listener callback from ibcore). And all the subsequent INADDR_ANY 2733 * listener callbacks from ibcore(for the same port address) do not 2734 * invoke solisten() as first listener callback has already created 2735 * listeners for all other devices(via solisten). 2736 */ 2737 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr, NULL)) { 2738 port_info = add_ep_to_listenlist(lep); 2739 /* skip solisten() if refcnt > 1, as the listeners were 2740 * already created by 'Master lep' 2741 */ 2742 if (port_info->refcnt > 1) { 2743 /* As there will be only one listener socket for a TCP 2744 * port, copy Master lep's socket pointer to other lep's 2745 * that are belonging to same TCP port. 2746 */ 2747 struct c4iw_listen_ep *head_lep = 2748 container_of(port_info->lep_list.next, 2749 struct c4iw_listen_ep, listen_ep_list); 2750 lep->com.so = head_lep->com.so; 2751 goto out; 2752 } 2753 } 2754 rc = c4iw_sock_create(&cm_id->local_addr, &lep->com.so); 2755 if (rc) { 2756 CTR2(KTR_IW_CXGBE, "%s:Failed to create socket. err %d", 2757 __func__, rc); 2758 goto fail; 2759 } 2760 2761 rc = -solisten(lep->com.so, backlog, curthread); 2762 if (rc) { 2763 CTR3(KTR_IW_CXGBE, "%s:Failed to listen on sock:%p. err %d", 2764 __func__, lep->com.so, rc); 2765 goto fail_free_so; 2766 } 2767 init_iwarp_socket(lep->com.so, &lep->com); 2768out: 2769 return 0; 2770 2771fail_free_so: 2772 sock_release(lep->com.so); 2773fail: 2774 if (port_info) 2775 rem_ep_from_listenlist(lep); 2776 deref_cm_id(&lep->com); 2777 c4iw_put_ep(&lep->com); 2778 return rc; 2779} 2780 2781int 2782c4iw_destroy_listen(struct iw_cm_id *cm_id) 2783{ 2784 struct c4iw_listen_ep *lep = to_listen_ep(cm_id); 2785 2786 mutex_lock(&lep->com.mutex); 2787 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, state %s", __func__, cm_id, 2788 states[lep->com.state]); 2789 2790 lep->com.state = DEAD; 2791 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr, 2792 lep->com.so->so_vnet)) { 2793 /* if no refcount then close listen socket */ 2794 if (!rem_ep_from_listenlist(lep)) 2795 close_socket(lep->com.so); 2796 } else 2797 close_socket(lep->com.so); 2798 deref_cm_id(&lep->com); 2799 mutex_unlock(&lep->com.mutex); 2800 c4iw_put_ep(&lep->com); 2801 return 0; 2802} 2803 2804int __c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2805{ 2806 int ret; 2807 mutex_lock(&ep->com.mutex); 2808 ret = c4iw_ep_disconnect(ep, abrupt, gfp); 2809 mutex_unlock(&ep->com.mutex); 2810 return ret; 2811} 2812 2813int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2814{ 2815 int ret = 0; 2816 int close = 0; 2817 struct c4iw_rdev *rdev; 2818 2819 2820 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep); 2821 2822 rdev = &ep->com.dev->rdev; 2823 2824 if (c4iw_fatal_error(rdev)) { 2825 CTR3(KTR_IW_CXGBE, "%s:ced1 fatal error %p %s", __func__, ep, 2826 states[ep->com.state]); 2827 if (ep->com.state != DEAD) { 2828 send_abort(ep); 2829 ep->com.state = DEAD; 2830 } 2831 close_complete_upcall(ep, -ECONNRESET); 2832 return ECONNRESET; 2833 } 2834 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep, 2835 states[ep->com.state]); 2836 2837 /* 2838 * Ref the ep here in case we have fatal errors causing the 2839 * ep to be released and freed. 2840 */ 2841 c4iw_get_ep(&ep->com); 2842 switch (ep->com.state) { 2843 2844 case MPA_REQ_WAIT: 2845 case MPA_REQ_SENT: 2846 case MPA_REQ_RCVD: 2847 case MPA_REP_SENT: 2848 case FPDU_MODE: 2849 close = 1; 2850 if (abrupt) 2851 ep->com.state = ABORTING; 2852 else { 2853 ep->com.state = CLOSING; 2854 START_EP_TIMER(ep); 2855 } 2856 set_bit(CLOSE_SENT, &ep->com.flags); 2857 break; 2858 2859 case CLOSING: 2860 2861 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2862 2863 close = 1; 2864 if (abrupt) { 2865 STOP_EP_TIMER(ep); 2866 ep->com.state = ABORTING; 2867 } else 2868 ep->com.state = MORIBUND; 2869 } 2870 break; 2871 2872 case MORIBUND: 2873 case ABORTING: 2874 case DEAD: 2875 CTR3(KTR_IW_CXGBE, 2876 "%s ignoring disconnect ep %p state %u", __func__, 2877 ep, ep->com.state); 2878 break; 2879 2880 default: 2881 BUG(); 2882 break; 2883 } 2884 2885 2886 if (close) { 2887 2888 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep); 2889 2890 if (abrupt) { 2891 2892 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep); 2893 set_bit(EP_DISC_ABORT, &ep->com.history); 2894 close_complete_upcall(ep, -ECONNRESET); 2895 send_abort(ep); 2896 } else { 2897 2898 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep); 2899 set_bit(EP_DISC_CLOSE, &ep->com.history); 2900 2901 if (!ep->parent_ep) 2902 ep->com.state = MORIBUND; 2903 2904 CURVNET_SET(ep->com.so->so_vnet); 2905 ret = sodisconnect(ep->com.so); 2906 CURVNET_RESTORE(); 2907 if (ret) { 2908 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep); 2909 STOP_EP_TIMER(ep); 2910 send_abort(ep); 2911 ep->com.state = DEAD; 2912 close_complete_upcall(ep, -ECONNRESET); 2913 set_bit(EP_DISC_FAIL, &ep->com.history); 2914 if (ep->com.qp) { 2915 struct c4iw_qp_attributes attrs = {0}; 2916 2917 attrs.next_state = C4IW_QP_STATE_ERROR; 2918 ret = c4iw_modify_qp( 2919 ep->com.dev, ep->com.qp, 2920 C4IW_QP_ATTR_NEXT_STATE, 2921 &attrs, 1); 2922 CTR3(KTR_IW_CXGBE, "%s:ced7 %p ret %d", 2923 __func__, ep, ret); 2924 } 2925 } 2926 } 2927 } 2928 c4iw_put_ep(&ep->com); 2929 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep); 2930 return ret; 2931} 2932 2933#ifdef C4IW_EP_REDIRECT 2934int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, 2935 struct l2t_entry *l2t) 2936{ 2937 struct c4iw_ep *ep = ctx; 2938 2939 if (ep->dst != old) 2940 return 0; 2941 2942 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, 2943 l2t); 2944 dst_hold(new); 2945 cxgb4_l2t_release(ep->l2t); 2946 ep->l2t = l2t; 2947 dst_release(old); 2948 ep->dst = new; 2949 return 1; 2950} 2951#endif 2952 2953 2954 2955static void ep_timeout(unsigned long arg) 2956{ 2957 struct c4iw_ep *ep = (struct c4iw_ep *)arg; 2958 2959 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 2960 2961 /* 2962 * Only insert if it is not already on the list. 2963 */ 2964 if (!(ep->com.ep_events & C4IW_EVENT_TIMEOUT)) { 2965 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep); 2966 add_ep_to_req_list(ep, C4IW_EVENT_TIMEOUT); 2967 } 2968 } 2969} 2970 2971static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl) 2972{ 2973 uint64_t val = be64toh(*rpl); 2974 int ret; 2975 struct c4iw_wr_wait *wr_waitp; 2976 2977 ret = (int)((val >> 8) & 0xff); 2978 wr_waitp = (struct c4iw_wr_wait *)rpl[1]; 2979 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret); 2980 if (wr_waitp) 2981 c4iw_wake_up(wr_waitp, ret ? -ret : 0); 2982 2983 return (0); 2984} 2985 2986static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl) 2987{ 2988 struct cqe_list_entry *cle; 2989 unsigned long flag; 2990 2991 cle = malloc(sizeof(*cle), M_CXGBE, M_NOWAIT); 2992 cle->rhp = sc->iwarp_softc; 2993 cle->err_cqe = *(const struct t4_cqe *)(&rpl[0]); 2994 2995 spin_lock_irqsave(&err_cqe_lock, flag); 2996 list_add_tail(&cle->entry, &err_cqe_list); 2997 queue_work(c4iw_taskq, &c4iw_task); 2998 spin_unlock_irqrestore(&err_cqe_lock, flag); 2999 3000 return (0); 3001} 3002 3003static int 3004process_terminate(struct c4iw_ep *ep) 3005{ 3006 struct c4iw_qp_attributes attrs = {0}; 3007 3008 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep); 3009 3010 if (ep && ep->com.qp) { 3011 3012 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", 3013 ep->hwtid, ep->com.qp->wq.sq.qid); 3014 attrs.next_state = C4IW_QP_STATE_TERMINATE; 3015 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 3016 1); 3017 } else 3018 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", 3019 ep->hwtid); 3020 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep); 3021 3022 return 0; 3023} 3024 3025int __init c4iw_cm_init(void) 3026{ 3027 3028 t4_register_cpl_handler(CPL_RDMA_TERMINATE, terminate); 3029 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, fw6_wr_rpl); 3030 t4_register_fw_msg_handler(FW6_TYPE_CQE, fw6_cqe_handler); 3031 t4_register_an_handler(c4iw_ev_handler); 3032 3033 TAILQ_INIT(&req_list); 3034 spin_lock_init(&req_lock); 3035 INIT_LIST_HEAD(&err_cqe_list); 3036 spin_lock_init(&err_cqe_lock); 3037 3038 INIT_WORK(&c4iw_task, process_req); 3039 3040 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe"); 3041 if (!c4iw_taskq) 3042 return -ENOMEM; 3043 3044 return 0; 3045} 3046 3047void __exit c4iw_cm_term(void) 3048{ 3049 WARN_ON(!TAILQ_EMPTY(&req_list)); 3050 WARN_ON(!list_empty(&err_cqe_list)); 3051 flush_workqueue(c4iw_taskq); 3052 destroy_workqueue(c4iw_taskq); 3053 3054 t4_register_cpl_handler(CPL_RDMA_TERMINATE, NULL); 3055 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, NULL); 3056 t4_register_fw_msg_handler(FW6_TYPE_CQE, NULL); 3057 t4_register_an_handler(NULL); 3058} 3059#endif 3060