1 /* 2 * Copyright (c) 2016 Chelsio Communications, Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 */ 8 9 #include <linux/module.h> 10 #include <linux/list.h> 11 #include <linux/workqueue.h> 12 #include <linux/skbuff.h> 13 #include <linux/timer.h> 14 #include <linux/notifier.h> 15 #include <linux/inetdevice.h> 16 #include <linux/ip.h> 17 #include <linux/tcp.h> 18 #include <linux/if_vlan.h> 19 20 #include <net/neighbour.h> 21 #include <net/netevent.h> 22 #include <net/route.h> 23 #include <net/tcp.h> 24 #include <net/ip6_route.h> 25 #include <net/addrconf.h> 26 27 #include <libcxgb_cm.h> 28 #include "cxgbit.h" 29 #include "clip_tbl.h" 30 31 static void cxgbit_init_wr_wait(struct cxgbit_wr_wait *wr_waitp) 32 { 33 wr_waitp->ret = 0; 34 reinit_completion(&wr_waitp->completion); 35 } 36 37 static void 38 cxgbit_wake_up(struct cxgbit_wr_wait *wr_waitp, const char *func, u8 ret) 39 { 40 if (ret == CPL_ERR_NONE) 41 wr_waitp->ret = 0; 42 else 43 wr_waitp->ret = -EIO; 44 45 if (wr_waitp->ret) 46 pr_err("%s: err:%u", func, ret); 47 48 complete(&wr_waitp->completion); 49 } 50 51 static int 52 cxgbit_wait_for_reply(struct cxgbit_device *cdev, 53 struct cxgbit_wr_wait *wr_waitp, u32 tid, u32 timeout, 54 const char *func) 55 { 56 int ret; 57 58 if (!test_bit(CDEV_STATE_UP, &cdev->flags)) { 59 wr_waitp->ret = -EIO; 60 goto out; 61 } 62 63 ret = wait_for_completion_timeout(&wr_waitp->completion, timeout * HZ); 64 if (!ret) { 65 pr_info("%s - Device %s not responding tid %u\n", 66 func, pci_name(cdev->lldi.pdev), tid); 67 wr_waitp->ret = -ETIMEDOUT; 68 } 69 out: 70 if (wr_waitp->ret) 71 pr_info("%s: FW reply %d tid %u\n", 72 pci_name(cdev->lldi.pdev), wr_waitp->ret, tid); 73 return wr_waitp->ret; 74 } 75 76 static int cxgbit_np_hashfn(const struct cxgbit_np *cnp) 77 { 78 return ((unsigned long)cnp >> 10) & (NP_INFO_HASH_SIZE - 1); 79 } 80 81 static struct np_info * 82 cxgbit_np_hash_add(struct cxgbit_device *cdev, struct cxgbit_np *cnp, 83 unsigned int stid) 84 { 85 struct np_info *p = kzalloc(sizeof(*p), GFP_KERNEL); 86 87 if (p) { 88 int bucket = cxgbit_np_hashfn(cnp); 89 90 p->cnp = cnp; 91 p->stid = stid; 92 spin_lock(&cdev->np_lock); 93 p->next = cdev->np_hash_tab[bucket]; 94 cdev->np_hash_tab[bucket] = p; 95 spin_unlock(&cdev->np_lock); 96 } 97 98 return p; 99 } 100 101 static int 102 cxgbit_np_hash_find(struct cxgbit_device *cdev, struct cxgbit_np *cnp) 103 { 104 int stid = -1, bucket = cxgbit_np_hashfn(cnp); 105 struct np_info *p; 106 107 spin_lock(&cdev->np_lock); 108 for (p = cdev->np_hash_tab[bucket]; p; p = p->next) { 109 if (p->cnp == cnp) { 110 stid = p->stid; 111 break; 112 } 113 } 114 spin_unlock(&cdev->np_lock); 115 116 return stid; 117 } 118 119 static int cxgbit_np_hash_del(struct cxgbit_device *cdev, struct cxgbit_np *cnp) 120 { 121 int stid = -1, bucket = cxgbit_np_hashfn(cnp); 122 struct np_info *p, **prev = &cdev->np_hash_tab[bucket]; 123 124 spin_lock(&cdev->np_lock); 125 for (p = *prev; p; prev = &p->next, p = p->next) { 126 if (p->cnp == cnp) { 127 stid = p->stid; 128 *prev = p->next; 129 kfree(p); 130 break; 131 } 132 } 133 spin_unlock(&cdev->np_lock); 134 135 return stid; 136 } 137 138 void _cxgbit_free_cnp(struct kref *kref) 139 { 140 struct cxgbit_np *cnp; 141 142 cnp = container_of(kref, struct cxgbit_np, kref); 143 kfree(cnp); 144 } 145 146 static int 147 cxgbit_create_server6(struct cxgbit_device *cdev, unsigned int stid, 148 struct cxgbit_np *cnp) 149 { 150 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) 151 &cnp->com.local_addr; 152 int addr_type; 153 int ret; 154 155 pr_debug("%s: dev = %s; stid = %u; sin6_port = %u\n", 156 __func__, cdev->lldi.ports[0]->name, stid, sin6->sin6_port); 157 158 addr_type = ipv6_addr_type((const struct in6_addr *) 159 &sin6->sin6_addr); 160 if (addr_type != IPV6_ADDR_ANY) { 161 ret = cxgb4_clip_get(cdev->lldi.ports[0], 162 (const u32 *)&sin6->sin6_addr.s6_addr, 1); 163 if (ret) { 164 pr_err("Unable to find clip table entry. laddr %pI6. Error:%d.\n", 165 sin6->sin6_addr.s6_addr, ret); 166 return -ENOMEM; 167 } 168 } 169 170 cxgbit_get_cnp(cnp); 171 cxgbit_init_wr_wait(&cnp->com.wr_wait); 172 173 ret = cxgb4_create_server6(cdev->lldi.ports[0], 174 stid, &sin6->sin6_addr, 175 sin6->sin6_port, 176 cdev->lldi.rxq_ids[0]); 177 if (!ret) 178 ret = cxgbit_wait_for_reply(cdev, &cnp->com.wr_wait, 179 0, 10, __func__); 180 else if (ret > 0) 181 ret = net_xmit_errno(ret); 182 else 183 cxgbit_put_cnp(cnp); 184 185 if (ret) { 186 if (ret != -ETIMEDOUT) 187 cxgb4_clip_release(cdev->lldi.ports[0], 188 (const u32 *)&sin6->sin6_addr.s6_addr, 1); 189 190 pr_err("create server6 err %d stid %d laddr %pI6 lport %d\n", 191 ret, stid, sin6->sin6_addr.s6_addr, 192 ntohs(sin6->sin6_port)); 193 } 194 195 return ret; 196 } 197 198 static int 199 cxgbit_create_server4(struct cxgbit_device *cdev, unsigned int stid, 200 struct cxgbit_np *cnp) 201 { 202 struct sockaddr_in *sin = (struct sockaddr_in *) 203 &cnp->com.local_addr; 204 int ret; 205 206 pr_debug("%s: dev = %s; stid = %u; sin_port = %u\n", 207 __func__, cdev->lldi.ports[0]->name, stid, sin->sin_port); 208 209 cxgbit_get_cnp(cnp); 210 cxgbit_init_wr_wait(&cnp->com.wr_wait); 211 212 ret = cxgb4_create_server(cdev->lldi.ports[0], 213 stid, sin->sin_addr.s_addr, 214 sin->sin_port, 0, 215 cdev->lldi.rxq_ids[0]); 216 if (!ret) 217 ret = cxgbit_wait_for_reply(cdev, 218 &cnp->com.wr_wait, 219 0, 10, __func__); 220 else if (ret > 0) 221 ret = net_xmit_errno(ret); 222 else 223 cxgbit_put_cnp(cnp); 224 225 if (ret) 226 pr_err("create server failed err %d stid %d laddr %pI4 lport %d\n", 227 ret, stid, &sin->sin_addr, ntohs(sin->sin_port)); 228 return ret; 229 } 230 231 struct cxgbit_device *cxgbit_find_device(struct net_device *ndev, u8 *port_id) 232 { 233 struct cxgbit_device *cdev; 234 u8 i; 235 236 list_for_each_entry(cdev, &cdev_list_head, list) { 237 struct cxgb4_lld_info *lldi = &cdev->lldi; 238 239 for (i = 0; i < lldi->nports; i++) { 240 if (lldi->ports[i] == ndev) { 241 if (port_id) 242 *port_id = i; 243 return cdev; 244 } 245 } 246 } 247 248 return NULL; 249 } 250 251 static struct net_device *cxgbit_get_real_dev(struct net_device *ndev) 252 { 253 if (ndev->priv_flags & IFF_BONDING) { 254 pr_err("Bond devices are not supported. Interface:%s\n", 255 ndev->name); 256 return NULL; 257 } 258 259 if (is_vlan_dev(ndev)) 260 return vlan_dev_real_dev(ndev); 261 262 return ndev; 263 } 264 265 static struct net_device *cxgbit_ipv4_netdev(__be32 saddr) 266 { 267 struct net_device *ndev; 268 269 ndev = __ip_dev_find(&init_net, saddr, false); 270 if (!ndev) 271 return NULL; 272 273 return cxgbit_get_real_dev(ndev); 274 } 275 276 static struct net_device *cxgbit_ipv6_netdev(struct in6_addr *addr6) 277 { 278 struct net_device *ndev = NULL; 279 bool found = false; 280 281 if (IS_ENABLED(CONFIG_IPV6)) { 282 for_each_netdev_rcu(&init_net, ndev) 283 if (ipv6_chk_addr(&init_net, addr6, ndev, 1)) { 284 found = true; 285 break; 286 } 287 } 288 if (!found) 289 return NULL; 290 return cxgbit_get_real_dev(ndev); 291 } 292 293 static struct cxgbit_device *cxgbit_find_np_cdev(struct cxgbit_np *cnp) 294 { 295 struct sockaddr_storage *sockaddr = &cnp->com.local_addr; 296 int ss_family = sockaddr->ss_family; 297 struct net_device *ndev = NULL; 298 struct cxgbit_device *cdev = NULL; 299 300 rcu_read_lock(); 301 if (ss_family == AF_INET) { 302 struct sockaddr_in *sin; 303 304 sin = (struct sockaddr_in *)sockaddr; 305 ndev = cxgbit_ipv4_netdev(sin->sin_addr.s_addr); 306 } else if (ss_family == AF_INET6) { 307 struct sockaddr_in6 *sin6; 308 309 sin6 = (struct sockaddr_in6 *)sockaddr; 310 ndev = cxgbit_ipv6_netdev(&sin6->sin6_addr); 311 } 312 if (!ndev) 313 goto out; 314 315 cdev = cxgbit_find_device(ndev, NULL); 316 out: 317 rcu_read_unlock(); 318 return cdev; 319 } 320 321 static bool cxgbit_inaddr_any(struct cxgbit_np *cnp) 322 { 323 struct sockaddr_storage *sockaddr = &cnp->com.local_addr; 324 int ss_family = sockaddr->ss_family; 325 int addr_type; 326 327 if (ss_family == AF_INET) { 328 struct sockaddr_in *sin; 329 330 sin = (struct sockaddr_in *)sockaddr; 331 if (sin->sin_addr.s_addr == htonl(INADDR_ANY)) 332 return true; 333 } else if (ss_family == AF_INET6) { 334 struct sockaddr_in6 *sin6; 335 336 sin6 = (struct sockaddr_in6 *)sockaddr; 337 addr_type = ipv6_addr_type((const struct in6_addr *) 338 &sin6->sin6_addr); 339 if (addr_type == IPV6_ADDR_ANY) 340 return true; 341 } 342 return false; 343 } 344 345 static int 346 __cxgbit_setup_cdev_np(struct cxgbit_device *cdev, struct cxgbit_np *cnp) 347 { 348 int stid, ret; 349 int ss_family = cnp->com.local_addr.ss_family; 350 351 if (!test_bit(CDEV_STATE_UP, &cdev->flags)) 352 return -EINVAL; 353 354 stid = cxgb4_alloc_stid(cdev->lldi.tids, ss_family, cnp); 355 if (stid < 0) 356 return -EINVAL; 357 358 if (!cxgbit_np_hash_add(cdev, cnp, stid)) { 359 cxgb4_free_stid(cdev->lldi.tids, stid, ss_family); 360 return -EINVAL; 361 } 362 363 if (ss_family == AF_INET) 364 ret = cxgbit_create_server4(cdev, stid, cnp); 365 else 366 ret = cxgbit_create_server6(cdev, stid, cnp); 367 368 if (ret) { 369 if (ret != -ETIMEDOUT) 370 cxgb4_free_stid(cdev->lldi.tids, stid, 371 ss_family); 372 cxgbit_np_hash_del(cdev, cnp); 373 return ret; 374 } 375 return ret; 376 } 377 378 static int cxgbit_setup_cdev_np(struct cxgbit_np *cnp) 379 { 380 struct cxgbit_device *cdev; 381 int ret = -1; 382 383 mutex_lock(&cdev_list_lock); 384 cdev = cxgbit_find_np_cdev(cnp); 385 if (!cdev) 386 goto out; 387 388 if (cxgbit_np_hash_find(cdev, cnp) >= 0) 389 goto out; 390 391 if (__cxgbit_setup_cdev_np(cdev, cnp)) 392 goto out; 393 394 cnp->com.cdev = cdev; 395 ret = 0; 396 out: 397 mutex_unlock(&cdev_list_lock); 398 return ret; 399 } 400 401 static int cxgbit_setup_all_np(struct cxgbit_np *cnp) 402 { 403 struct cxgbit_device *cdev; 404 int ret; 405 u32 count = 0; 406 407 mutex_lock(&cdev_list_lock); 408 list_for_each_entry(cdev, &cdev_list_head, list) { 409 if (cxgbit_np_hash_find(cdev, cnp) >= 0) { 410 mutex_unlock(&cdev_list_lock); 411 return -1; 412 } 413 } 414 415 list_for_each_entry(cdev, &cdev_list_head, list) { 416 ret = __cxgbit_setup_cdev_np(cdev, cnp); 417 if (ret == -ETIMEDOUT) 418 break; 419 if (ret != 0) 420 continue; 421 count++; 422 } 423 mutex_unlock(&cdev_list_lock); 424 425 return count ? 0 : -1; 426 } 427 428 int cxgbit_setup_np(struct iscsi_np *np, struct sockaddr_storage *ksockaddr) 429 { 430 struct cxgbit_np *cnp; 431 int ret; 432 433 if ((ksockaddr->ss_family != AF_INET) && 434 (ksockaddr->ss_family != AF_INET6)) 435 return -EINVAL; 436 437 cnp = kzalloc(sizeof(*cnp), GFP_KERNEL); 438 if (!cnp) 439 return -ENOMEM; 440 441 init_waitqueue_head(&cnp->accept_wait); 442 init_completion(&cnp->com.wr_wait.completion); 443 init_completion(&cnp->accept_comp); 444 INIT_LIST_HEAD(&cnp->np_accept_list); 445 spin_lock_init(&cnp->np_accept_lock); 446 kref_init(&cnp->kref); 447 memcpy(&np->np_sockaddr, ksockaddr, 448 sizeof(struct sockaddr_storage)); 449 memcpy(&cnp->com.local_addr, &np->np_sockaddr, 450 sizeof(cnp->com.local_addr)); 451 452 cnp->np = np; 453 cnp->com.cdev = NULL; 454 455 if (cxgbit_inaddr_any(cnp)) 456 ret = cxgbit_setup_all_np(cnp); 457 else 458 ret = cxgbit_setup_cdev_np(cnp); 459 460 if (ret) { 461 cxgbit_put_cnp(cnp); 462 return -EINVAL; 463 } 464 465 np->np_context = cnp; 466 cnp->com.state = CSK_STATE_LISTEN; 467 return 0; 468 } 469 470 static void 471 cxgbit_set_conn_info(struct iscsi_np *np, struct iscsi_conn *conn, 472 struct cxgbit_sock *csk) 473 { 474 conn->login_family = np->np_sockaddr.ss_family; 475 conn->login_sockaddr = csk->com.remote_addr; 476 conn->local_sockaddr = csk->com.local_addr; 477 } 478 479 int cxgbit_accept_np(struct iscsi_np *np, struct iscsi_conn *conn) 480 { 481 struct cxgbit_np *cnp = np->np_context; 482 struct cxgbit_sock *csk; 483 int ret = 0; 484 485 accept_wait: 486 ret = wait_for_completion_interruptible(&cnp->accept_comp); 487 if (ret) 488 return -ENODEV; 489 490 spin_lock_bh(&np->np_thread_lock); 491 if (np->np_thread_state >= ISCSI_NP_THREAD_RESET) { 492 spin_unlock_bh(&np->np_thread_lock); 493 /** 494 * No point in stalling here when np_thread 495 * is in state RESET/SHUTDOWN/EXIT - bail 496 **/ 497 return -ENODEV; 498 } 499 spin_unlock_bh(&np->np_thread_lock); 500 501 spin_lock_bh(&cnp->np_accept_lock); 502 if (list_empty(&cnp->np_accept_list)) { 503 spin_unlock_bh(&cnp->np_accept_lock); 504 goto accept_wait; 505 } 506 507 csk = list_first_entry(&cnp->np_accept_list, 508 struct cxgbit_sock, 509 accept_node); 510 511 list_del_init(&csk->accept_node); 512 spin_unlock_bh(&cnp->np_accept_lock); 513 conn->context = csk; 514 csk->conn = conn; 515 516 cxgbit_set_conn_info(np, conn, csk); 517 return 0; 518 } 519 520 static int 521 __cxgbit_free_cdev_np(struct cxgbit_device *cdev, struct cxgbit_np *cnp) 522 { 523 int stid, ret; 524 bool ipv6 = false; 525 526 stid = cxgbit_np_hash_del(cdev, cnp); 527 if (stid < 0) 528 return -EINVAL; 529 if (!test_bit(CDEV_STATE_UP, &cdev->flags)) 530 return -EINVAL; 531 532 if (cnp->np->np_sockaddr.ss_family == AF_INET6) 533 ipv6 = true; 534 535 cxgbit_get_cnp(cnp); 536 cxgbit_init_wr_wait(&cnp->com.wr_wait); 537 ret = cxgb4_remove_server(cdev->lldi.ports[0], stid, 538 cdev->lldi.rxq_ids[0], ipv6); 539 540 if (ret > 0) 541 ret = net_xmit_errno(ret); 542 543 if (ret) { 544 cxgbit_put_cnp(cnp); 545 return ret; 546 } 547 548 ret = cxgbit_wait_for_reply(cdev, &cnp->com.wr_wait, 549 0, 10, __func__); 550 if (ret == -ETIMEDOUT) 551 return ret; 552 553 if (ipv6 && cnp->com.cdev) { 554 struct sockaddr_in6 *sin6; 555 556 sin6 = (struct sockaddr_in6 *)&cnp->com.local_addr; 557 cxgb4_clip_release(cdev->lldi.ports[0], 558 (const u32 *)&sin6->sin6_addr.s6_addr, 559 1); 560 } 561 562 cxgb4_free_stid(cdev->lldi.tids, stid, 563 cnp->com.local_addr.ss_family); 564 return 0; 565 } 566 567 static void cxgbit_free_all_np(struct cxgbit_np *cnp) 568 { 569 struct cxgbit_device *cdev; 570 int ret; 571 572 mutex_lock(&cdev_list_lock); 573 list_for_each_entry(cdev, &cdev_list_head, list) { 574 ret = __cxgbit_free_cdev_np(cdev, cnp); 575 if (ret == -ETIMEDOUT) 576 break; 577 } 578 mutex_unlock(&cdev_list_lock); 579 } 580 581 static void cxgbit_free_cdev_np(struct cxgbit_np *cnp) 582 { 583 struct cxgbit_device *cdev; 584 bool found = false; 585 586 mutex_lock(&cdev_list_lock); 587 list_for_each_entry(cdev, &cdev_list_head, list) { 588 if (cdev == cnp->com.cdev) { 589 found = true; 590 break; 591 } 592 } 593 if (!found) 594 goto out; 595 596 __cxgbit_free_cdev_np(cdev, cnp); 597 out: 598 mutex_unlock(&cdev_list_lock); 599 } 600 601 void cxgbit_free_np(struct iscsi_np *np) 602 { 603 struct cxgbit_np *cnp = np->np_context; 604 605 cnp->com.state = CSK_STATE_DEAD; 606 if (cnp->com.cdev) 607 cxgbit_free_cdev_np(cnp); 608 else 609 cxgbit_free_all_np(cnp); 610 611 np->np_context = NULL; 612 cxgbit_put_cnp(cnp); 613 } 614 615 static void cxgbit_send_halfclose(struct cxgbit_sock *csk) 616 { 617 struct sk_buff *skb; 618 u32 len = roundup(sizeof(struct cpl_close_con_req), 16); 619 620 skb = alloc_skb(len, GFP_ATOMIC); 621 if (!skb) 622 return; 623 624 cxgb_mk_close_con_req(skb, len, csk->tid, csk->txq_idx, 625 NULL, NULL); 626 627 cxgbit_skcb_flags(skb) |= SKCBF_TX_FLAG_COMPL; 628 __skb_queue_tail(&csk->txq, skb); 629 cxgbit_push_tx_frames(csk); 630 } 631 632 static void cxgbit_arp_failure_discard(void *handle, struct sk_buff *skb) 633 { 634 pr_debug("%s cxgbit_device %p\n", __func__, handle); 635 kfree_skb(skb); 636 } 637 638 static void cxgbit_abort_arp_failure(void *handle, struct sk_buff *skb) 639 { 640 struct cxgbit_device *cdev = handle; 641 struct cpl_abort_req *req = cplhdr(skb); 642 643 pr_debug("%s cdev %p\n", __func__, cdev); 644 req->cmd = CPL_ABORT_NO_RST; 645 cxgbit_ofld_send(cdev, skb); 646 } 647 648 static int cxgbit_send_abort_req(struct cxgbit_sock *csk) 649 { 650 struct sk_buff *skb; 651 u32 len = roundup(sizeof(struct cpl_abort_req), 16); 652 653 pr_debug("%s: csk %p tid %u; state %d\n", 654 __func__, csk, csk->tid, csk->com.state); 655 656 __skb_queue_purge(&csk->txq); 657 658 if (!test_and_set_bit(CSK_TX_DATA_SENT, &csk->com.flags)) 659 cxgbit_send_tx_flowc_wr(csk); 660 661 skb = __skb_dequeue(&csk->skbq); 662 cxgb_mk_abort_req(skb, len, csk->tid, csk->txq_idx, 663 csk->com.cdev, cxgbit_abort_arp_failure); 664 665 return cxgbit_l2t_send(csk->com.cdev, skb, csk->l2t); 666 } 667 668 void cxgbit_free_conn(struct iscsi_conn *conn) 669 { 670 struct cxgbit_sock *csk = conn->context; 671 bool release = false; 672 673 pr_debug("%s: state %d\n", 674 __func__, csk->com.state); 675 676 spin_lock_bh(&csk->lock); 677 switch (csk->com.state) { 678 case CSK_STATE_ESTABLISHED: 679 if (conn->conn_state == TARG_CONN_STATE_IN_LOGOUT) { 680 csk->com.state = CSK_STATE_CLOSING; 681 cxgbit_send_halfclose(csk); 682 } else { 683 csk->com.state = CSK_STATE_ABORTING; 684 cxgbit_send_abort_req(csk); 685 } 686 break; 687 case CSK_STATE_CLOSING: 688 csk->com.state = CSK_STATE_MORIBUND; 689 cxgbit_send_halfclose(csk); 690 break; 691 case CSK_STATE_DEAD: 692 release = true; 693 break; 694 default: 695 pr_err("%s: csk %p; state %d\n", 696 __func__, csk, csk->com.state); 697 } 698 spin_unlock_bh(&csk->lock); 699 700 if (release) 701 cxgbit_put_csk(csk); 702 } 703 704 static void cxgbit_set_emss(struct cxgbit_sock *csk, u16 opt) 705 { 706 csk->emss = csk->com.cdev->lldi.mtus[TCPOPT_MSS_G(opt)] - 707 ((csk->com.remote_addr.ss_family == AF_INET) ? 708 sizeof(struct iphdr) : sizeof(struct ipv6hdr)) - 709 sizeof(struct tcphdr); 710 csk->mss = csk->emss; 711 if (TCPOPT_TSTAMP_G(opt)) 712 csk->emss -= round_up(TCPOLEN_TIMESTAMP, 4); 713 if (csk->emss < 128) 714 csk->emss = 128; 715 if (csk->emss & 7) 716 pr_info("Warning: misaligned mtu idx %u mss %u emss=%u\n", 717 TCPOPT_MSS_G(opt), csk->mss, csk->emss); 718 pr_debug("%s mss_idx %u mss %u emss=%u\n", __func__, TCPOPT_MSS_G(opt), 719 csk->mss, csk->emss); 720 } 721 722 static void cxgbit_free_skb(struct cxgbit_sock *csk) 723 { 724 struct sk_buff *skb; 725 726 __skb_queue_purge(&csk->txq); 727 __skb_queue_purge(&csk->rxq); 728 __skb_queue_purge(&csk->backlogq); 729 __skb_queue_purge(&csk->ppodq); 730 __skb_queue_purge(&csk->skbq); 731 732 while ((skb = cxgbit_sock_dequeue_wr(csk))) 733 kfree_skb(skb); 734 735 __kfree_skb(csk->lro_hskb); 736 } 737 738 void _cxgbit_free_csk(struct kref *kref) 739 { 740 struct cxgbit_sock *csk; 741 struct cxgbit_device *cdev; 742 743 csk = container_of(kref, struct cxgbit_sock, kref); 744 745 pr_debug("%s csk %p state %d\n", __func__, csk, csk->com.state); 746 747 if (csk->com.local_addr.ss_family == AF_INET6) { 748 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) 749 &csk->com.local_addr; 750 cxgb4_clip_release(csk->com.cdev->lldi.ports[0], 751 (const u32 *) 752 &sin6->sin6_addr.s6_addr, 1); 753 } 754 755 cxgb4_remove_tid(csk->com.cdev->lldi.tids, 0, csk->tid); 756 dst_release(csk->dst); 757 cxgb4_l2t_release(csk->l2t); 758 759 cdev = csk->com.cdev; 760 spin_lock_bh(&cdev->cskq.lock); 761 list_del(&csk->list); 762 spin_unlock_bh(&cdev->cskq.lock); 763 764 cxgbit_free_skb(csk); 765 cxgbit_put_cdev(cdev); 766 767 kfree(csk); 768 } 769 770 static void cxgbit_set_tcp_window(struct cxgbit_sock *csk, struct port_info *pi) 771 { 772 unsigned int linkspeed; 773 u8 scale; 774 775 linkspeed = pi->link_cfg.speed; 776 scale = linkspeed / SPEED_10000; 777 778 #define CXGBIT_10G_RCV_WIN (256 * 1024) 779 csk->rcv_win = CXGBIT_10G_RCV_WIN; 780 if (scale) 781 csk->rcv_win *= scale; 782 783 #define CXGBIT_10G_SND_WIN (256 * 1024) 784 csk->snd_win = CXGBIT_10G_SND_WIN; 785 if (scale) 786 csk->snd_win *= scale; 787 788 pr_debug("%s snd_win %d rcv_win %d\n", 789 __func__, csk->snd_win, csk->rcv_win); 790 } 791 792 #ifdef CONFIG_CHELSIO_T4_DCB 793 static u8 cxgbit_get_iscsi_dcb_state(struct net_device *ndev) 794 { 795 return ndev->dcbnl_ops->getstate(ndev); 796 } 797 798 static int cxgbit_select_priority(int pri_mask) 799 { 800 if (!pri_mask) 801 return 0; 802 803 return (ffs(pri_mask) - 1); 804 } 805 806 static u8 cxgbit_get_iscsi_dcb_priority(struct net_device *ndev, u16 local_port) 807 { 808 int ret; 809 u8 caps; 810 811 struct dcb_app iscsi_dcb_app = { 812 .protocol = local_port 813 }; 814 815 ret = (int)ndev->dcbnl_ops->getcap(ndev, DCB_CAP_ATTR_DCBX, &caps); 816 817 if (ret) 818 return 0; 819 820 if (caps & DCB_CAP_DCBX_VER_IEEE) { 821 iscsi_dcb_app.selector = IEEE_8021QAZ_APP_SEL_ANY; 822 823 ret = dcb_ieee_getapp_mask(ndev, &iscsi_dcb_app); 824 825 } else if (caps & DCB_CAP_DCBX_VER_CEE) { 826 iscsi_dcb_app.selector = DCB_APP_IDTYPE_PORTNUM; 827 828 ret = dcb_getapp(ndev, &iscsi_dcb_app); 829 } 830 831 pr_info("iSCSI priority is set to %u\n", cxgbit_select_priority(ret)); 832 833 return cxgbit_select_priority(ret); 834 } 835 #endif 836 837 static int 838 cxgbit_offload_init(struct cxgbit_sock *csk, int iptype, __u8 *peer_ip, 839 u16 local_port, struct dst_entry *dst, 840 struct cxgbit_device *cdev) 841 { 842 struct neighbour *n; 843 int ret, step; 844 struct net_device *ndev; 845 u16 rxq_idx, port_id; 846 #ifdef CONFIG_CHELSIO_T4_DCB 847 u8 priority = 0; 848 #endif 849 850 n = dst_neigh_lookup(dst, peer_ip); 851 if (!n) 852 return -ENODEV; 853 854 rcu_read_lock(); 855 ret = -ENOMEM; 856 if (n->dev->flags & IFF_LOOPBACK) { 857 if (iptype == 4) 858 ndev = cxgbit_ipv4_netdev(*(__be32 *)peer_ip); 859 else if (IS_ENABLED(CONFIG_IPV6)) 860 ndev = cxgbit_ipv6_netdev((struct in6_addr *)peer_ip); 861 else 862 ndev = NULL; 863 864 if (!ndev) { 865 ret = -ENODEV; 866 goto out; 867 } 868 869 csk->l2t = cxgb4_l2t_get(cdev->lldi.l2t, 870 n, ndev, 0); 871 if (!csk->l2t) 872 goto out; 873 csk->mtu = ndev->mtu; 874 csk->tx_chan = cxgb4_port_chan(ndev); 875 csk->smac_idx = (cxgb4_port_viid(ndev) & 0x7F) << 1; 876 step = cdev->lldi.ntxq / 877 cdev->lldi.nchan; 878 csk->txq_idx = cxgb4_port_idx(ndev) * step; 879 step = cdev->lldi.nrxq / 880 cdev->lldi.nchan; 881 csk->ctrlq_idx = cxgb4_port_idx(ndev); 882 csk->rss_qid = cdev->lldi.rxq_ids[ 883 cxgb4_port_idx(ndev) * step]; 884 csk->port_id = cxgb4_port_idx(ndev); 885 cxgbit_set_tcp_window(csk, 886 (struct port_info *)netdev_priv(ndev)); 887 } else { 888 ndev = cxgbit_get_real_dev(n->dev); 889 if (!ndev) { 890 ret = -ENODEV; 891 goto out; 892 } 893 894 #ifdef CONFIG_CHELSIO_T4_DCB 895 if (cxgbit_get_iscsi_dcb_state(ndev)) 896 priority = cxgbit_get_iscsi_dcb_priority(ndev, 897 local_port); 898 899 csk->dcb_priority = priority; 900 901 csk->l2t = cxgb4_l2t_get(cdev->lldi.l2t, n, ndev, priority); 902 #else 903 csk->l2t = cxgb4_l2t_get(cdev->lldi.l2t, n, ndev, 0); 904 #endif 905 if (!csk->l2t) 906 goto out; 907 port_id = cxgb4_port_idx(ndev); 908 csk->mtu = dst_mtu(dst); 909 csk->tx_chan = cxgb4_port_chan(ndev); 910 csk->smac_idx = (cxgb4_port_viid(ndev) & 0x7F) << 1; 911 step = cdev->lldi.ntxq / 912 cdev->lldi.nports; 913 csk->txq_idx = (port_id * step) + 914 (cdev->selectq[port_id][0]++ % step); 915 csk->ctrlq_idx = cxgb4_port_idx(ndev); 916 step = cdev->lldi.nrxq / 917 cdev->lldi.nports; 918 rxq_idx = (port_id * step) + 919 (cdev->selectq[port_id][1]++ % step); 920 csk->rss_qid = cdev->lldi.rxq_ids[rxq_idx]; 921 csk->port_id = port_id; 922 cxgbit_set_tcp_window(csk, 923 (struct port_info *)netdev_priv(ndev)); 924 } 925 ret = 0; 926 out: 927 rcu_read_unlock(); 928 neigh_release(n); 929 return ret; 930 } 931 932 int cxgbit_ofld_send(struct cxgbit_device *cdev, struct sk_buff *skb) 933 { 934 int ret = 0; 935 936 if (!test_bit(CDEV_STATE_UP, &cdev->flags)) { 937 kfree_skb(skb); 938 pr_err("%s - device not up - dropping\n", __func__); 939 return -EIO; 940 } 941 942 ret = cxgb4_ofld_send(cdev->lldi.ports[0], skb); 943 if (ret < 0) 944 kfree_skb(skb); 945 return ret < 0 ? ret : 0; 946 } 947 948 static void cxgbit_release_tid(struct cxgbit_device *cdev, u32 tid) 949 { 950 u32 len = roundup(sizeof(struct cpl_tid_release), 16); 951 struct sk_buff *skb; 952 953 skb = alloc_skb(len, GFP_ATOMIC); 954 if (!skb) 955 return; 956 957 cxgb_mk_tid_release(skb, len, tid, 0); 958 cxgbit_ofld_send(cdev, skb); 959 } 960 961 int 962 cxgbit_l2t_send(struct cxgbit_device *cdev, struct sk_buff *skb, 963 struct l2t_entry *l2e) 964 { 965 int ret = 0; 966 967 if (!test_bit(CDEV_STATE_UP, &cdev->flags)) { 968 kfree_skb(skb); 969 pr_err("%s - device not up - dropping\n", __func__); 970 return -EIO; 971 } 972 973 ret = cxgb4_l2t_send(cdev->lldi.ports[0], skb, l2e); 974 if (ret < 0) 975 kfree_skb(skb); 976 return ret < 0 ? ret : 0; 977 } 978 979 static void cxgbit_send_rx_credits(struct cxgbit_sock *csk, struct sk_buff *skb) 980 { 981 if (csk->com.state != CSK_STATE_ESTABLISHED) { 982 __kfree_skb(skb); 983 return; 984 } 985 986 cxgbit_ofld_send(csk->com.cdev, skb); 987 } 988 989 /* 990 * CPL connection rx data ack: host -> 991 * Send RX credits through an RX_DATA_ACK CPL message. 992 * Returns the number of credits sent. 993 */ 994 int cxgbit_rx_data_ack(struct cxgbit_sock *csk) 995 { 996 struct sk_buff *skb; 997 u32 len = roundup(sizeof(struct cpl_rx_data_ack), 16); 998 u32 credit_dack; 999 1000 skb = alloc_skb(len, GFP_KERNEL); 1001 if (!skb) 1002 return -1; 1003 1004 credit_dack = RX_DACK_CHANGE_F | RX_DACK_MODE_V(1) | 1005 RX_CREDITS_V(csk->rx_credits); 1006 1007 cxgb_mk_rx_data_ack(skb, len, csk->tid, csk->ctrlq_idx, 1008 credit_dack); 1009 1010 csk->rx_credits = 0; 1011 1012 spin_lock_bh(&csk->lock); 1013 if (csk->lock_owner) { 1014 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_send_rx_credits; 1015 __skb_queue_tail(&csk->backlogq, skb); 1016 spin_unlock_bh(&csk->lock); 1017 return 0; 1018 } 1019 1020 cxgbit_send_rx_credits(csk, skb); 1021 spin_unlock_bh(&csk->lock); 1022 1023 return 0; 1024 } 1025 1026 #define FLOWC_WR_NPARAMS_MIN 9 1027 #define FLOWC_WR_NPARAMS_MAX 11 1028 static int cxgbit_alloc_csk_skb(struct cxgbit_sock *csk) 1029 { 1030 struct sk_buff *skb; 1031 u32 len, flowclen; 1032 u8 i; 1033 1034 flowclen = offsetof(struct fw_flowc_wr, 1035 mnemval[FLOWC_WR_NPARAMS_MAX]); 1036 1037 len = max_t(u32, sizeof(struct cpl_abort_req), 1038 sizeof(struct cpl_abort_rpl)); 1039 1040 len = max(len, flowclen); 1041 len = roundup(len, 16); 1042 1043 for (i = 0; i < 3; i++) { 1044 skb = alloc_skb(len, GFP_ATOMIC); 1045 if (!skb) 1046 goto out; 1047 __skb_queue_tail(&csk->skbq, skb); 1048 } 1049 1050 skb = alloc_skb(LRO_SKB_MIN_HEADROOM, GFP_ATOMIC); 1051 if (!skb) 1052 goto out; 1053 1054 memset(skb->data, 0, LRO_SKB_MIN_HEADROOM); 1055 csk->lro_hskb = skb; 1056 1057 return 0; 1058 out: 1059 __skb_queue_purge(&csk->skbq); 1060 return -ENOMEM; 1061 } 1062 1063 static void 1064 cxgbit_pass_accept_rpl(struct cxgbit_sock *csk, struct cpl_pass_accept_req *req) 1065 { 1066 struct sk_buff *skb; 1067 const struct tcphdr *tcph; 1068 struct cpl_t5_pass_accept_rpl *rpl5; 1069 unsigned int len = roundup(sizeof(*rpl5), 16); 1070 unsigned int mtu_idx; 1071 u64 opt0; 1072 u32 opt2, hlen; 1073 u32 wscale; 1074 u32 win; 1075 1076 pr_debug("%s csk %p tid %u\n", __func__, csk, csk->tid); 1077 1078 skb = alloc_skb(len, GFP_ATOMIC); 1079 if (!skb) { 1080 cxgbit_put_csk(csk); 1081 return; 1082 } 1083 1084 rpl5 = (struct cpl_t5_pass_accept_rpl *)__skb_put(skb, len); 1085 memset(rpl5, 0, len); 1086 1087 INIT_TP_WR(rpl5, csk->tid); 1088 OPCODE_TID(rpl5) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, 1089 csk->tid)); 1090 cxgb_best_mtu(csk->com.cdev->lldi.mtus, csk->mtu, &mtu_idx, 1091 req->tcpopt.tstamp, 1092 (csk->com.remote_addr.ss_family == AF_INET) ? 0 : 1); 1093 wscale = cxgb_compute_wscale(csk->rcv_win); 1094 /* 1095 * Specify the largest window that will fit in opt0. The 1096 * remainder will be specified in the rx_data_ack. 1097 */ 1098 win = csk->rcv_win >> 10; 1099 if (win > RCV_BUFSIZ_M) 1100 win = RCV_BUFSIZ_M; 1101 opt0 = TCAM_BYPASS_F | 1102 WND_SCALE_V(wscale) | 1103 MSS_IDX_V(mtu_idx) | 1104 L2T_IDX_V(csk->l2t->idx) | 1105 TX_CHAN_V(csk->tx_chan) | 1106 SMAC_SEL_V(csk->smac_idx) | 1107 DSCP_V(csk->tos >> 2) | 1108 ULP_MODE_V(ULP_MODE_ISCSI) | 1109 RCV_BUFSIZ_V(win); 1110 1111 opt2 = RX_CHANNEL_V(0) | 1112 RSS_QUEUE_VALID_F | RSS_QUEUE_V(csk->rss_qid); 1113 1114 if (req->tcpopt.tstamp) 1115 opt2 |= TSTAMPS_EN_F; 1116 if (req->tcpopt.sack) 1117 opt2 |= SACK_EN_F; 1118 if (wscale) 1119 opt2 |= WND_SCALE_EN_F; 1120 1121 hlen = ntohl(req->hdr_len); 1122 tcph = (const void *)(req + 1) + ETH_HDR_LEN_G(hlen) + 1123 IP_HDR_LEN_G(hlen); 1124 1125 if (tcph->ece && tcph->cwr) 1126 opt2 |= CCTRL_ECN_V(1); 1127 1128 opt2 |= RX_COALESCE_V(3); 1129 opt2 |= CONG_CNTRL_V(CONG_ALG_NEWRENO); 1130 1131 opt2 |= T5_ISS_F; 1132 rpl5->iss = cpu_to_be32((prandom_u32() & ~7UL) - 1); 1133 1134 opt2 |= T5_OPT_2_VALID_F; 1135 1136 rpl5->opt0 = cpu_to_be64(opt0); 1137 rpl5->opt2 = cpu_to_be32(opt2); 1138 set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->ctrlq_idx); 1139 t4_set_arp_err_handler(skb, NULL, cxgbit_arp_failure_discard); 1140 cxgbit_l2t_send(csk->com.cdev, skb, csk->l2t); 1141 } 1142 1143 static void 1144 cxgbit_pass_accept_req(struct cxgbit_device *cdev, struct sk_buff *skb) 1145 { 1146 struct cxgbit_sock *csk = NULL; 1147 struct cxgbit_np *cnp; 1148 struct cpl_pass_accept_req *req = cplhdr(skb); 1149 unsigned int stid = PASS_OPEN_TID_G(ntohl(req->tos_stid)); 1150 struct tid_info *t = cdev->lldi.tids; 1151 unsigned int tid = GET_TID(req); 1152 u16 peer_mss = ntohs(req->tcpopt.mss); 1153 unsigned short hdrs; 1154 1155 struct dst_entry *dst; 1156 __u8 local_ip[16], peer_ip[16]; 1157 __be16 local_port, peer_port; 1158 int ret; 1159 int iptype; 1160 1161 pr_debug("%s: cdev = %p; stid = %u; tid = %u\n", 1162 __func__, cdev, stid, tid); 1163 1164 cnp = lookup_stid(t, stid); 1165 if (!cnp) { 1166 pr_err("%s connect request on invalid stid %d\n", 1167 __func__, stid); 1168 goto rel_skb; 1169 } 1170 1171 if (cnp->com.state != CSK_STATE_LISTEN) { 1172 pr_err("%s - listening parent not in CSK_STATE_LISTEN\n", 1173 __func__); 1174 goto reject; 1175 } 1176 1177 csk = lookup_tid(t, tid); 1178 if (csk) { 1179 pr_err("%s csk not null tid %u\n", 1180 __func__, tid); 1181 goto rel_skb; 1182 } 1183 1184 cxgb_get_4tuple(req, cdev->lldi.adapter_type, &iptype, local_ip, 1185 peer_ip, &local_port, &peer_port); 1186 1187 /* Find output route */ 1188 if (iptype == 4) { 1189 pr_debug("%s parent sock %p tid %u laddr %pI4 raddr %pI4 " 1190 "lport %d rport %d peer_mss %d\n" 1191 , __func__, cnp, tid, 1192 local_ip, peer_ip, ntohs(local_port), 1193 ntohs(peer_port), peer_mss); 1194 dst = cxgb_find_route(&cdev->lldi, cxgbit_get_real_dev, 1195 *(__be32 *)local_ip, 1196 *(__be32 *)peer_ip, 1197 local_port, peer_port, 1198 PASS_OPEN_TOS_G(ntohl(req->tos_stid))); 1199 } else { 1200 pr_debug("%s parent sock %p tid %u laddr %pI6 raddr %pI6 " 1201 "lport %d rport %d peer_mss %d\n" 1202 , __func__, cnp, tid, 1203 local_ip, peer_ip, ntohs(local_port), 1204 ntohs(peer_port), peer_mss); 1205 dst = cxgb_find_route6(&cdev->lldi, cxgbit_get_real_dev, 1206 local_ip, peer_ip, 1207 local_port, peer_port, 1208 PASS_OPEN_TOS_G(ntohl(req->tos_stid)), 1209 ((struct sockaddr_in6 *) 1210 &cnp->com.local_addr)->sin6_scope_id); 1211 } 1212 if (!dst) { 1213 pr_err("%s - failed to find dst entry!\n", 1214 __func__); 1215 goto reject; 1216 } 1217 1218 csk = kzalloc(sizeof(*csk), GFP_ATOMIC); 1219 if (!csk) { 1220 dst_release(dst); 1221 goto rel_skb; 1222 } 1223 1224 ret = cxgbit_offload_init(csk, iptype, peer_ip, ntohs(local_port), 1225 dst, cdev); 1226 if (ret) { 1227 pr_err("%s - failed to allocate l2t entry!\n", 1228 __func__); 1229 dst_release(dst); 1230 kfree(csk); 1231 goto reject; 1232 } 1233 1234 kref_init(&csk->kref); 1235 init_completion(&csk->com.wr_wait.completion); 1236 1237 INIT_LIST_HEAD(&csk->accept_node); 1238 1239 hdrs = (iptype == 4 ? sizeof(struct iphdr) : sizeof(struct ipv6hdr)) + 1240 sizeof(struct tcphdr) + (req->tcpopt.tstamp ? 12 : 0); 1241 if (peer_mss && csk->mtu > (peer_mss + hdrs)) 1242 csk->mtu = peer_mss + hdrs; 1243 1244 csk->com.state = CSK_STATE_CONNECTING; 1245 csk->com.cdev = cdev; 1246 csk->cnp = cnp; 1247 csk->tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid)); 1248 csk->dst = dst; 1249 csk->tid = tid; 1250 csk->wr_cred = cdev->lldi.wr_cred - 1251 DIV_ROUND_UP(sizeof(struct cpl_abort_req), 16); 1252 csk->wr_max_cred = csk->wr_cred; 1253 csk->wr_una_cred = 0; 1254 1255 if (iptype == 4) { 1256 struct sockaddr_in *sin = (struct sockaddr_in *) 1257 &csk->com.local_addr; 1258 sin->sin_family = AF_INET; 1259 sin->sin_port = local_port; 1260 sin->sin_addr.s_addr = *(__be32 *)local_ip; 1261 1262 sin = (struct sockaddr_in *)&csk->com.remote_addr; 1263 sin->sin_family = AF_INET; 1264 sin->sin_port = peer_port; 1265 sin->sin_addr.s_addr = *(__be32 *)peer_ip; 1266 } else { 1267 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) 1268 &csk->com.local_addr; 1269 1270 sin6->sin6_family = PF_INET6; 1271 sin6->sin6_port = local_port; 1272 memcpy(sin6->sin6_addr.s6_addr, local_ip, 16); 1273 cxgb4_clip_get(cdev->lldi.ports[0], 1274 (const u32 *)&sin6->sin6_addr.s6_addr, 1275 1); 1276 1277 sin6 = (struct sockaddr_in6 *)&csk->com.remote_addr; 1278 sin6->sin6_family = PF_INET6; 1279 sin6->sin6_port = peer_port; 1280 memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16); 1281 } 1282 1283 skb_queue_head_init(&csk->rxq); 1284 skb_queue_head_init(&csk->txq); 1285 skb_queue_head_init(&csk->ppodq); 1286 skb_queue_head_init(&csk->backlogq); 1287 skb_queue_head_init(&csk->skbq); 1288 cxgbit_sock_reset_wr_list(csk); 1289 spin_lock_init(&csk->lock); 1290 init_waitqueue_head(&csk->waitq); 1291 init_waitqueue_head(&csk->ack_waitq); 1292 csk->lock_owner = false; 1293 1294 if (cxgbit_alloc_csk_skb(csk)) { 1295 dst_release(dst); 1296 kfree(csk); 1297 goto rel_skb; 1298 } 1299 1300 cxgbit_get_cdev(cdev); 1301 1302 spin_lock(&cdev->cskq.lock); 1303 list_add_tail(&csk->list, &cdev->cskq.list); 1304 spin_unlock(&cdev->cskq.lock); 1305 1306 cxgb4_insert_tid(t, csk, tid); 1307 cxgbit_pass_accept_rpl(csk, req); 1308 goto rel_skb; 1309 1310 reject: 1311 cxgbit_release_tid(cdev, tid); 1312 rel_skb: 1313 __kfree_skb(skb); 1314 } 1315 1316 static u32 1317 cxgbit_tx_flowc_wr_credits(struct cxgbit_sock *csk, u32 *nparamsp, 1318 u32 *flowclenp) 1319 { 1320 u32 nparams, flowclen16, flowclen; 1321 1322 nparams = FLOWC_WR_NPARAMS_MIN; 1323 1324 if (csk->snd_wscale) 1325 nparams++; 1326 1327 #ifdef CONFIG_CHELSIO_T4_DCB 1328 nparams++; 1329 #endif 1330 flowclen = offsetof(struct fw_flowc_wr, mnemval[nparams]); 1331 flowclen16 = DIV_ROUND_UP(flowclen, 16); 1332 flowclen = flowclen16 * 16; 1333 /* 1334 * Return the number of 16-byte credits used by the flowc request. 1335 * Pass back the nparams and actual flowc length if requested. 1336 */ 1337 if (nparamsp) 1338 *nparamsp = nparams; 1339 if (flowclenp) 1340 *flowclenp = flowclen; 1341 return flowclen16; 1342 } 1343 1344 u32 cxgbit_send_tx_flowc_wr(struct cxgbit_sock *csk) 1345 { 1346 struct cxgbit_device *cdev = csk->com.cdev; 1347 struct fw_flowc_wr *flowc; 1348 u32 nparams, flowclen16, flowclen; 1349 struct sk_buff *skb; 1350 u8 index; 1351 1352 #ifdef CONFIG_CHELSIO_T4_DCB 1353 u16 vlan = ((struct l2t_entry *)csk->l2t)->vlan; 1354 #endif 1355 1356 flowclen16 = cxgbit_tx_flowc_wr_credits(csk, &nparams, &flowclen); 1357 1358 skb = __skb_dequeue(&csk->skbq); 1359 flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen); 1360 memset(flowc, 0, flowclen); 1361 1362 flowc->op_to_nparams = cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) | 1363 FW_FLOWC_WR_NPARAMS_V(nparams)); 1364 flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(flowclen16) | 1365 FW_WR_FLOWID_V(csk->tid)); 1366 flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; 1367 flowc->mnemval[0].val = cpu_to_be32(FW_PFVF_CMD_PFN_V 1368 (csk->com.cdev->lldi.pf)); 1369 flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; 1370 flowc->mnemval[1].val = cpu_to_be32(csk->tx_chan); 1371 flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; 1372 flowc->mnemval[2].val = cpu_to_be32(csk->tx_chan); 1373 flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; 1374 flowc->mnemval[3].val = cpu_to_be32(csk->rss_qid); 1375 flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; 1376 flowc->mnemval[4].val = cpu_to_be32(csk->snd_nxt); 1377 flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; 1378 flowc->mnemval[5].val = cpu_to_be32(csk->rcv_nxt); 1379 flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; 1380 flowc->mnemval[6].val = cpu_to_be32(csk->snd_win); 1381 flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; 1382 flowc->mnemval[7].val = cpu_to_be32(csk->emss); 1383 1384 flowc->mnemval[8].mnemonic = FW_FLOWC_MNEM_TXDATAPLEN_MAX; 1385 if (test_bit(CDEV_ISO_ENABLE, &cdev->flags)) 1386 flowc->mnemval[8].val = cpu_to_be32(CXGBIT_MAX_ISO_PAYLOAD); 1387 else 1388 flowc->mnemval[8].val = cpu_to_be32(16384); 1389 1390 index = 9; 1391 1392 if (csk->snd_wscale) { 1393 flowc->mnemval[index].mnemonic = FW_FLOWC_MNEM_RCV_SCALE; 1394 flowc->mnemval[index].val = cpu_to_be32(csk->snd_wscale); 1395 index++; 1396 } 1397 1398 #ifdef CONFIG_CHELSIO_T4_DCB 1399 flowc->mnemval[index].mnemonic = FW_FLOWC_MNEM_DCBPRIO; 1400 if (vlan == VLAN_NONE) { 1401 pr_warn("csk %u without VLAN Tag on DCB Link\n", csk->tid); 1402 flowc->mnemval[index].val = cpu_to_be32(0); 1403 } else 1404 flowc->mnemval[index].val = cpu_to_be32( 1405 (vlan & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT); 1406 #endif 1407 1408 pr_debug("%s: csk %p; tx_chan = %u; rss_qid = %u; snd_seq = %u;" 1409 " rcv_seq = %u; snd_win = %u; emss = %u\n", 1410 __func__, csk, csk->tx_chan, csk->rss_qid, csk->snd_nxt, 1411 csk->rcv_nxt, csk->snd_win, csk->emss); 1412 set_wr_txq(skb, CPL_PRIORITY_DATA, csk->txq_idx); 1413 cxgbit_ofld_send(csk->com.cdev, skb); 1414 return flowclen16; 1415 } 1416 1417 int cxgbit_setup_conn_digest(struct cxgbit_sock *csk) 1418 { 1419 struct sk_buff *skb; 1420 struct cpl_set_tcb_field *req; 1421 u8 hcrc = csk->submode & CXGBIT_SUBMODE_HCRC; 1422 u8 dcrc = csk->submode & CXGBIT_SUBMODE_DCRC; 1423 unsigned int len = roundup(sizeof(*req), 16); 1424 int ret; 1425 1426 skb = alloc_skb(len, GFP_KERNEL); 1427 if (!skb) 1428 return -ENOMEM; 1429 1430 /* set up ulp submode */ 1431 req = (struct cpl_set_tcb_field *)__skb_put(skb, len); 1432 memset(req, 0, len); 1433 1434 INIT_TP_WR(req, csk->tid); 1435 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, csk->tid)); 1436 req->reply_ctrl = htons(NO_REPLY_V(0) | QUEUENO_V(csk->rss_qid)); 1437 req->word_cookie = htons(0); 1438 req->mask = cpu_to_be64(0x3 << 4); 1439 req->val = cpu_to_be64(((hcrc ? ULP_CRC_HEADER : 0) | 1440 (dcrc ? ULP_CRC_DATA : 0)) << 4); 1441 set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->ctrlq_idx); 1442 1443 cxgbit_get_csk(csk); 1444 cxgbit_init_wr_wait(&csk->com.wr_wait); 1445 1446 cxgbit_ofld_send(csk->com.cdev, skb); 1447 1448 ret = cxgbit_wait_for_reply(csk->com.cdev, 1449 &csk->com.wr_wait, 1450 csk->tid, 5, __func__); 1451 if (ret) 1452 return -1; 1453 1454 return 0; 1455 } 1456 1457 int cxgbit_setup_conn_pgidx(struct cxgbit_sock *csk, u32 pg_idx) 1458 { 1459 struct sk_buff *skb; 1460 struct cpl_set_tcb_field *req; 1461 unsigned int len = roundup(sizeof(*req), 16); 1462 int ret; 1463 1464 skb = alloc_skb(len, GFP_KERNEL); 1465 if (!skb) 1466 return -ENOMEM; 1467 1468 req = (struct cpl_set_tcb_field *)__skb_put(skb, len); 1469 memset(req, 0, len); 1470 1471 INIT_TP_WR(req, csk->tid); 1472 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, csk->tid)); 1473 req->reply_ctrl = htons(NO_REPLY_V(0) | QUEUENO_V(csk->rss_qid)); 1474 req->word_cookie = htons(0); 1475 req->mask = cpu_to_be64(0x3 << 8); 1476 req->val = cpu_to_be64(pg_idx << 8); 1477 set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->ctrlq_idx); 1478 1479 cxgbit_get_csk(csk); 1480 cxgbit_init_wr_wait(&csk->com.wr_wait); 1481 1482 cxgbit_ofld_send(csk->com.cdev, skb); 1483 1484 ret = cxgbit_wait_for_reply(csk->com.cdev, 1485 &csk->com.wr_wait, 1486 csk->tid, 5, __func__); 1487 if (ret) 1488 return -1; 1489 1490 return 0; 1491 } 1492 1493 static void 1494 cxgbit_pass_open_rpl(struct cxgbit_device *cdev, struct sk_buff *skb) 1495 { 1496 struct cpl_pass_open_rpl *rpl = cplhdr(skb); 1497 struct tid_info *t = cdev->lldi.tids; 1498 unsigned int stid = GET_TID(rpl); 1499 struct cxgbit_np *cnp = lookup_stid(t, stid); 1500 1501 pr_debug("%s: cnp = %p; stid = %u; status = %d\n", 1502 __func__, cnp, stid, rpl->status); 1503 1504 if (!cnp) { 1505 pr_info("%s stid %d lookup failure\n", __func__, stid); 1506 return; 1507 } 1508 1509 cxgbit_wake_up(&cnp->com.wr_wait, __func__, rpl->status); 1510 cxgbit_put_cnp(cnp); 1511 } 1512 1513 static void 1514 cxgbit_close_listsrv_rpl(struct cxgbit_device *cdev, struct sk_buff *skb) 1515 { 1516 struct cpl_close_listsvr_rpl *rpl = cplhdr(skb); 1517 struct tid_info *t = cdev->lldi.tids; 1518 unsigned int stid = GET_TID(rpl); 1519 struct cxgbit_np *cnp = lookup_stid(t, stid); 1520 1521 pr_debug("%s: cnp = %p; stid = %u; status = %d\n", 1522 __func__, cnp, stid, rpl->status); 1523 1524 if (!cnp) { 1525 pr_info("%s stid %d lookup failure\n", __func__, stid); 1526 return; 1527 } 1528 1529 cxgbit_wake_up(&cnp->com.wr_wait, __func__, rpl->status); 1530 cxgbit_put_cnp(cnp); 1531 } 1532 1533 static void 1534 cxgbit_pass_establish(struct cxgbit_device *cdev, struct sk_buff *skb) 1535 { 1536 struct cpl_pass_establish *req = cplhdr(skb); 1537 struct tid_info *t = cdev->lldi.tids; 1538 unsigned int tid = GET_TID(req); 1539 struct cxgbit_sock *csk; 1540 struct cxgbit_np *cnp; 1541 u16 tcp_opt = be16_to_cpu(req->tcp_opt); 1542 u32 snd_isn = be32_to_cpu(req->snd_isn); 1543 u32 rcv_isn = be32_to_cpu(req->rcv_isn); 1544 1545 csk = lookup_tid(t, tid); 1546 if (unlikely(!csk)) { 1547 pr_err("can't find connection for tid %u.\n", tid); 1548 goto rel_skb; 1549 } 1550 cnp = csk->cnp; 1551 1552 pr_debug("%s: csk %p; tid %u; cnp %p\n", 1553 __func__, csk, tid, cnp); 1554 1555 csk->write_seq = snd_isn; 1556 csk->snd_una = snd_isn; 1557 csk->snd_nxt = snd_isn; 1558 1559 csk->rcv_nxt = rcv_isn; 1560 1561 if (csk->rcv_win > (RCV_BUFSIZ_M << 10)) 1562 csk->rx_credits = (csk->rcv_win - (RCV_BUFSIZ_M << 10)); 1563 1564 csk->snd_wscale = TCPOPT_SND_WSCALE_G(tcp_opt); 1565 cxgbit_set_emss(csk, tcp_opt); 1566 dst_confirm(csk->dst); 1567 csk->com.state = CSK_STATE_ESTABLISHED; 1568 spin_lock_bh(&cnp->np_accept_lock); 1569 list_add_tail(&csk->accept_node, &cnp->np_accept_list); 1570 spin_unlock_bh(&cnp->np_accept_lock); 1571 complete(&cnp->accept_comp); 1572 rel_skb: 1573 __kfree_skb(skb); 1574 } 1575 1576 static void cxgbit_queue_rx_skb(struct cxgbit_sock *csk, struct sk_buff *skb) 1577 { 1578 cxgbit_skcb_flags(skb) = 0; 1579 spin_lock_bh(&csk->rxq.lock); 1580 __skb_queue_tail(&csk->rxq, skb); 1581 spin_unlock_bh(&csk->rxq.lock); 1582 wake_up(&csk->waitq); 1583 } 1584 1585 static void cxgbit_peer_close(struct cxgbit_sock *csk, struct sk_buff *skb) 1586 { 1587 pr_debug("%s: csk %p; tid %u; state %d\n", 1588 __func__, csk, csk->tid, csk->com.state); 1589 1590 switch (csk->com.state) { 1591 case CSK_STATE_ESTABLISHED: 1592 csk->com.state = CSK_STATE_CLOSING; 1593 cxgbit_queue_rx_skb(csk, skb); 1594 return; 1595 case CSK_STATE_CLOSING: 1596 /* simultaneous close */ 1597 csk->com.state = CSK_STATE_MORIBUND; 1598 break; 1599 case CSK_STATE_MORIBUND: 1600 csk->com.state = CSK_STATE_DEAD; 1601 cxgbit_put_csk(csk); 1602 break; 1603 case CSK_STATE_ABORTING: 1604 break; 1605 default: 1606 pr_info("%s: cpl_peer_close in bad state %d\n", 1607 __func__, csk->com.state); 1608 } 1609 1610 __kfree_skb(skb); 1611 } 1612 1613 static void cxgbit_close_con_rpl(struct cxgbit_sock *csk, struct sk_buff *skb) 1614 { 1615 pr_debug("%s: csk %p; tid %u; state %d\n", 1616 __func__, csk, csk->tid, csk->com.state); 1617 1618 switch (csk->com.state) { 1619 case CSK_STATE_CLOSING: 1620 csk->com.state = CSK_STATE_MORIBUND; 1621 break; 1622 case CSK_STATE_MORIBUND: 1623 csk->com.state = CSK_STATE_DEAD; 1624 cxgbit_put_csk(csk); 1625 break; 1626 case CSK_STATE_ABORTING: 1627 case CSK_STATE_DEAD: 1628 break; 1629 default: 1630 pr_info("%s: cpl_close_con_rpl in bad state %d\n", 1631 __func__, csk->com.state); 1632 } 1633 1634 __kfree_skb(skb); 1635 } 1636 1637 static void cxgbit_abort_req_rss(struct cxgbit_sock *csk, struct sk_buff *skb) 1638 { 1639 struct cpl_abort_req_rss *hdr = cplhdr(skb); 1640 unsigned int tid = GET_TID(hdr); 1641 struct sk_buff *rpl_skb; 1642 bool release = false; 1643 bool wakeup_thread = false; 1644 u32 len = roundup(sizeof(struct cpl_abort_rpl), 16); 1645 1646 pr_debug("%s: csk %p; tid %u; state %d\n", 1647 __func__, csk, tid, csk->com.state); 1648 1649 if (cxgb_is_neg_adv(hdr->status)) { 1650 pr_err("%s: got neg advise %d on tid %u\n", 1651 __func__, hdr->status, tid); 1652 goto rel_skb; 1653 } 1654 1655 switch (csk->com.state) { 1656 case CSK_STATE_CONNECTING: 1657 case CSK_STATE_MORIBUND: 1658 csk->com.state = CSK_STATE_DEAD; 1659 release = true; 1660 break; 1661 case CSK_STATE_ESTABLISHED: 1662 csk->com.state = CSK_STATE_DEAD; 1663 wakeup_thread = true; 1664 break; 1665 case CSK_STATE_CLOSING: 1666 csk->com.state = CSK_STATE_DEAD; 1667 if (!csk->conn) 1668 release = true; 1669 break; 1670 case CSK_STATE_ABORTING: 1671 break; 1672 default: 1673 pr_info("%s: cpl_abort_req_rss in bad state %d\n", 1674 __func__, csk->com.state); 1675 csk->com.state = CSK_STATE_DEAD; 1676 } 1677 1678 __skb_queue_purge(&csk->txq); 1679 1680 if (!test_and_set_bit(CSK_TX_DATA_SENT, &csk->com.flags)) 1681 cxgbit_send_tx_flowc_wr(csk); 1682 1683 rpl_skb = __skb_dequeue(&csk->skbq); 1684 1685 cxgb_mk_abort_rpl(rpl_skb, len, csk->tid, csk->txq_idx); 1686 cxgbit_ofld_send(csk->com.cdev, rpl_skb); 1687 1688 if (wakeup_thread) { 1689 cxgbit_queue_rx_skb(csk, skb); 1690 return; 1691 } 1692 1693 if (release) 1694 cxgbit_put_csk(csk); 1695 rel_skb: 1696 __kfree_skb(skb); 1697 } 1698 1699 static void cxgbit_abort_rpl_rss(struct cxgbit_sock *csk, struct sk_buff *skb) 1700 { 1701 pr_debug("%s: csk %p; tid %u; state %d\n", 1702 __func__, csk, csk->tid, csk->com.state); 1703 1704 switch (csk->com.state) { 1705 case CSK_STATE_ABORTING: 1706 csk->com.state = CSK_STATE_DEAD; 1707 cxgbit_put_csk(csk); 1708 break; 1709 default: 1710 pr_info("%s: cpl_abort_rpl_rss in state %d\n", 1711 __func__, csk->com.state); 1712 } 1713 1714 __kfree_skb(skb); 1715 } 1716 1717 static bool cxgbit_credit_err(const struct cxgbit_sock *csk) 1718 { 1719 const struct sk_buff *skb = csk->wr_pending_head; 1720 u32 credit = 0; 1721 1722 if (unlikely(csk->wr_cred > csk->wr_max_cred)) { 1723 pr_err("csk 0x%p, tid %u, credit %u > %u\n", 1724 csk, csk->tid, csk->wr_cred, csk->wr_max_cred); 1725 return true; 1726 } 1727 1728 while (skb) { 1729 credit += skb->csum; 1730 skb = cxgbit_skcb_tx_wr_next(skb); 1731 } 1732 1733 if (unlikely((csk->wr_cred + credit) != csk->wr_max_cred)) { 1734 pr_err("csk 0x%p, tid %u, credit %u + %u != %u.\n", 1735 csk, csk->tid, csk->wr_cred, 1736 credit, csk->wr_max_cred); 1737 1738 return true; 1739 } 1740 1741 return false; 1742 } 1743 1744 static void cxgbit_fw4_ack(struct cxgbit_sock *csk, struct sk_buff *skb) 1745 { 1746 struct cpl_fw4_ack *rpl = (struct cpl_fw4_ack *)cplhdr(skb); 1747 u32 credits = rpl->credits; 1748 u32 snd_una = ntohl(rpl->snd_una); 1749 1750 csk->wr_cred += credits; 1751 if (csk->wr_una_cred > (csk->wr_max_cred - csk->wr_cred)) 1752 csk->wr_una_cred = csk->wr_max_cred - csk->wr_cred; 1753 1754 while (credits) { 1755 struct sk_buff *p = cxgbit_sock_peek_wr(csk); 1756 1757 if (unlikely(!p)) { 1758 pr_err("csk 0x%p,%u, cr %u,%u+%u, empty.\n", 1759 csk, csk->tid, credits, 1760 csk->wr_cred, csk->wr_una_cred); 1761 break; 1762 } 1763 1764 if (unlikely(credits < p->csum)) { 1765 pr_warn("csk 0x%p,%u, cr %u,%u+%u, < %u.\n", 1766 csk, csk->tid, 1767 credits, csk->wr_cred, csk->wr_una_cred, 1768 p->csum); 1769 p->csum -= credits; 1770 break; 1771 } 1772 1773 cxgbit_sock_dequeue_wr(csk); 1774 credits -= p->csum; 1775 kfree_skb(p); 1776 } 1777 1778 if (unlikely(cxgbit_credit_err(csk))) { 1779 cxgbit_queue_rx_skb(csk, skb); 1780 return; 1781 } 1782 1783 if (rpl->seq_vld & CPL_FW4_ACK_FLAGS_SEQVAL) { 1784 if (unlikely(before(snd_una, csk->snd_una))) { 1785 pr_warn("csk 0x%p,%u, snd_una %u/%u.", 1786 csk, csk->tid, snd_una, 1787 csk->snd_una); 1788 goto rel_skb; 1789 } 1790 1791 if (csk->snd_una != snd_una) { 1792 csk->snd_una = snd_una; 1793 dst_confirm(csk->dst); 1794 wake_up(&csk->ack_waitq); 1795 } 1796 } 1797 1798 if (skb_queue_len(&csk->txq)) 1799 cxgbit_push_tx_frames(csk); 1800 1801 rel_skb: 1802 __kfree_skb(skb); 1803 } 1804 1805 static void cxgbit_set_tcb_rpl(struct cxgbit_device *cdev, struct sk_buff *skb) 1806 { 1807 struct cxgbit_sock *csk; 1808 struct cpl_set_tcb_rpl *rpl = (struct cpl_set_tcb_rpl *)skb->data; 1809 unsigned int tid = GET_TID(rpl); 1810 struct cxgb4_lld_info *lldi = &cdev->lldi; 1811 struct tid_info *t = lldi->tids; 1812 1813 csk = lookup_tid(t, tid); 1814 if (unlikely(!csk)) 1815 pr_err("can't find connection for tid %u.\n", tid); 1816 else 1817 cxgbit_wake_up(&csk->com.wr_wait, __func__, rpl->status); 1818 1819 cxgbit_put_csk(csk); 1820 } 1821 1822 static void cxgbit_rx_data(struct cxgbit_device *cdev, struct sk_buff *skb) 1823 { 1824 struct cxgbit_sock *csk; 1825 struct cpl_rx_data *cpl = cplhdr(skb); 1826 unsigned int tid = GET_TID(cpl); 1827 struct cxgb4_lld_info *lldi = &cdev->lldi; 1828 struct tid_info *t = lldi->tids; 1829 1830 csk = lookup_tid(t, tid); 1831 if (unlikely(!csk)) { 1832 pr_err("can't find conn. for tid %u.\n", tid); 1833 goto rel_skb; 1834 } 1835 1836 cxgbit_queue_rx_skb(csk, skb); 1837 return; 1838 rel_skb: 1839 __kfree_skb(skb); 1840 } 1841 1842 static void 1843 __cxgbit_process_rx_cpl(struct cxgbit_sock *csk, struct sk_buff *skb) 1844 { 1845 spin_lock(&csk->lock); 1846 if (csk->lock_owner) { 1847 __skb_queue_tail(&csk->backlogq, skb); 1848 spin_unlock(&csk->lock); 1849 return; 1850 } 1851 1852 cxgbit_skcb_rx_backlog_fn(skb)(csk, skb); 1853 spin_unlock(&csk->lock); 1854 } 1855 1856 static void cxgbit_process_rx_cpl(struct cxgbit_sock *csk, struct sk_buff *skb) 1857 { 1858 cxgbit_get_csk(csk); 1859 __cxgbit_process_rx_cpl(csk, skb); 1860 cxgbit_put_csk(csk); 1861 } 1862 1863 static void cxgbit_rx_cpl(struct cxgbit_device *cdev, struct sk_buff *skb) 1864 { 1865 struct cxgbit_sock *csk; 1866 struct cpl_tx_data *cpl = cplhdr(skb); 1867 struct cxgb4_lld_info *lldi = &cdev->lldi; 1868 struct tid_info *t = lldi->tids; 1869 unsigned int tid = GET_TID(cpl); 1870 u8 opcode = cxgbit_skcb_rx_opcode(skb); 1871 bool ref = true; 1872 1873 switch (opcode) { 1874 case CPL_FW4_ACK: 1875 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_fw4_ack; 1876 ref = false; 1877 break; 1878 case CPL_PEER_CLOSE: 1879 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_peer_close; 1880 break; 1881 case CPL_CLOSE_CON_RPL: 1882 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_close_con_rpl; 1883 break; 1884 case CPL_ABORT_REQ_RSS: 1885 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_abort_req_rss; 1886 break; 1887 case CPL_ABORT_RPL_RSS: 1888 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_abort_rpl_rss; 1889 break; 1890 default: 1891 goto rel_skb; 1892 } 1893 1894 csk = lookup_tid(t, tid); 1895 if (unlikely(!csk)) { 1896 pr_err("can't find conn. for tid %u.\n", tid); 1897 goto rel_skb; 1898 } 1899 1900 if (ref) 1901 cxgbit_process_rx_cpl(csk, skb); 1902 else 1903 __cxgbit_process_rx_cpl(csk, skb); 1904 1905 return; 1906 rel_skb: 1907 __kfree_skb(skb); 1908 } 1909 1910 cxgbit_cplhandler_func cxgbit_cplhandlers[NUM_CPL_CMDS] = { 1911 [CPL_PASS_OPEN_RPL] = cxgbit_pass_open_rpl, 1912 [CPL_CLOSE_LISTSRV_RPL] = cxgbit_close_listsrv_rpl, 1913 [CPL_PASS_ACCEPT_REQ] = cxgbit_pass_accept_req, 1914 [CPL_PASS_ESTABLISH] = cxgbit_pass_establish, 1915 [CPL_SET_TCB_RPL] = cxgbit_set_tcb_rpl, 1916 [CPL_RX_DATA] = cxgbit_rx_data, 1917 [CPL_FW4_ACK] = cxgbit_rx_cpl, 1918 [CPL_PEER_CLOSE] = cxgbit_rx_cpl, 1919 [CPL_CLOSE_CON_RPL] = cxgbit_rx_cpl, 1920 [CPL_ABORT_REQ_RSS] = cxgbit_rx_cpl, 1921 [CPL_ABORT_RPL_RSS] = cxgbit_rx_cpl, 1922 }; 1923