1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012 Chelsio Communications, Inc. 5 * All rights reserved. 6 * Written by: Navdeep Parhar <np@FreeBSD.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include "opt_inet.h" 34 #include "opt_inet6.h" 35 #include "opt_ratelimit.h" 36 37 #include <sys/param.h> 38 #include <sys/types.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/ktr.h> 42 #include <sys/lock.h> 43 #include <sys/limits.h> 44 #include <sys/module.h> 45 #include <sys/protosw.h> 46 #include <sys/domain.h> 47 #include <sys/refcount.h> 48 #include <sys/rmlock.h> 49 #include <sys/socket.h> 50 #include <sys/socketvar.h> 51 #include <sys/taskqueue.h> 52 #include <net/if.h> 53 #include <net/if_var.h> 54 #include <netinet/in.h> 55 #include <netinet/in_pcb.h> 56 #include <netinet/in_var.h> 57 #include <netinet/ip.h> 58 #include <netinet/ip6.h> 59 #include <netinet6/scope6_var.h> 60 #define TCPSTATES 61 #include <netinet/tcp_fsm.h> 62 #include <netinet/tcp_timer.h> 63 #include <netinet/tcp_var.h> 64 #include <netinet/toecore.h> 65 66 #ifdef TCP_OFFLOAD 67 #include "common/common.h" 68 #include "common/t4_msg.h" 69 #include "common/t4_regs.h" 70 #include "common/t4_regs_values.h" 71 #include "common/t4_tcb.h" 72 #include "tom/t4_tom_l2t.h" 73 #include "tom/t4_tom.h" 74 75 static struct protosw toe_protosw; 76 static struct pr_usrreqs toe_usrreqs; 77 78 static struct protosw toe6_protosw; 79 static struct pr_usrreqs toe6_usrreqs; 80 81 /* Module ops */ 82 static int t4_tom_mod_load(void); 83 static int t4_tom_mod_unload(void); 84 static int t4_tom_modevent(module_t, int, void *); 85 86 /* ULD ops and helpers */ 87 static int t4_tom_activate(struct adapter *); 88 static int t4_tom_deactivate(struct adapter *); 89 90 static struct uld_info tom_uld_info = { 91 .uld_id = ULD_TOM, 92 .activate = t4_tom_activate, 93 .deactivate = t4_tom_deactivate, 94 }; 95 96 static void queue_tid_release(struct adapter *, int); 97 static void release_offload_resources(struct toepcb *); 98 static int alloc_tid_tabs(struct tid_info *); 99 static void free_tid_tabs(struct tid_info *); 100 static int add_lip(struct adapter *, struct in6_addr *); 101 static int delete_lip(struct adapter *, struct in6_addr *); 102 static struct clip_entry *search_lip(struct tom_data *, struct in6_addr *); 103 static void init_clip_table(struct adapter *, struct tom_data *); 104 static void update_clip(struct adapter *, void *); 105 static void t4_clip_task(void *, int); 106 static void update_clip_table(struct adapter *, struct tom_data *); 107 static void destroy_clip_table(struct adapter *, struct tom_data *); 108 static void free_tom_data(struct adapter *, struct tom_data *); 109 static void reclaim_wr_resources(void *, int); 110 111 static int in6_ifaddr_gen; 112 static eventhandler_tag ifaddr_evhandler; 113 static struct timeout_task clip_task; 114 115 struct toepcb * 116 alloc_toepcb(struct vi_info *vi, int txqid, int rxqid, int flags) 117 { 118 struct port_info *pi = vi->pi; 119 struct adapter *sc = pi->adapter; 120 struct toepcb *toep; 121 int tx_credits, txsd_total, len; 122 123 /* 124 * The firmware counts tx work request credits in units of 16 bytes 125 * each. Reserve room for an ABORT_REQ so the driver never has to worry 126 * about tx credits if it wants to abort a connection. 127 */ 128 tx_credits = sc->params.ofldq_wr_cred; 129 tx_credits -= howmany(sizeof(struct cpl_abort_req), 16); 130 131 /* 132 * Shortest possible tx work request is a fw_ofld_tx_data_wr + 1 byte 133 * immediate payload, and firmware counts tx work request credits in 134 * units of 16 byte. Calculate the maximum work requests possible. 135 */ 136 txsd_total = tx_credits / 137 howmany(sizeof(struct fw_ofld_tx_data_wr) + 1, 16); 138 139 if (txqid < 0) 140 txqid = (arc4random() % vi->nofldtxq) + vi->first_ofld_txq; 141 KASSERT(txqid >= vi->first_ofld_txq && 142 txqid < vi->first_ofld_txq + vi->nofldtxq, 143 ("%s: txqid %d for vi %p (first %d, n %d)", __func__, txqid, vi, 144 vi->first_ofld_txq, vi->nofldtxq)); 145 146 if (rxqid < 0) 147 rxqid = (arc4random() % vi->nofldrxq) + vi->first_ofld_rxq; 148 KASSERT(rxqid >= vi->first_ofld_rxq && 149 rxqid < vi->first_ofld_rxq + vi->nofldrxq, 150 ("%s: rxqid %d for vi %p (first %d, n %d)", __func__, rxqid, vi, 151 vi->first_ofld_rxq, vi->nofldrxq)); 152 153 len = offsetof(struct toepcb, txsd) + 154 txsd_total * sizeof(struct ofld_tx_sdesc); 155 156 toep = malloc(len, M_CXGBE, M_ZERO | flags); 157 if (toep == NULL) 158 return (NULL); 159 160 refcount_init(&toep->refcount, 1); 161 toep->td = sc->tom_softc; 162 toep->vi = vi; 163 toep->tc_idx = -1; 164 toep->tx_total = tx_credits; 165 toep->tx_credits = tx_credits; 166 toep->ofld_txq = &sc->sge.ofld_txq[txqid]; 167 toep->ofld_rxq = &sc->sge.ofld_rxq[rxqid]; 168 toep->ctrlq = &sc->sge.ctrlq[pi->port_id]; 169 mbufq_init(&toep->ulp_pduq, INT_MAX); 170 mbufq_init(&toep->ulp_pdu_reclaimq, INT_MAX); 171 toep->txsd_total = txsd_total; 172 toep->txsd_avail = txsd_total; 173 toep->txsd_pidx = 0; 174 toep->txsd_cidx = 0; 175 aiotx_init_toep(toep); 176 177 return (toep); 178 } 179 180 struct toepcb * 181 hold_toepcb(struct toepcb *toep) 182 { 183 184 refcount_acquire(&toep->refcount); 185 return (toep); 186 } 187 188 void 189 free_toepcb(struct toepcb *toep) 190 { 191 192 if (refcount_release(&toep->refcount) == 0) 193 return; 194 195 KASSERT(!(toep->flags & TPF_ATTACHED), 196 ("%s: attached to an inpcb", __func__)); 197 KASSERT(!(toep->flags & TPF_CPL_PENDING), 198 ("%s: CPL pending", __func__)); 199 200 if (toep->ulp_mode == ULP_MODE_TCPDDP) 201 ddp_uninit_toep(toep); 202 free(toep, M_CXGBE); 203 } 204 205 /* 206 * Set up the socket for TCP offload. 207 */ 208 void 209 offload_socket(struct socket *so, struct toepcb *toep) 210 { 211 struct tom_data *td = toep->td; 212 struct inpcb *inp = sotoinpcb(so); 213 struct tcpcb *tp = intotcpcb(inp); 214 struct sockbuf *sb; 215 216 INP_WLOCK_ASSERT(inp); 217 218 /* Update socket */ 219 sb = &so->so_snd; 220 SOCKBUF_LOCK(sb); 221 sb->sb_flags |= SB_NOCOALESCE; 222 SOCKBUF_UNLOCK(sb); 223 sb = &so->so_rcv; 224 SOCKBUF_LOCK(sb); 225 sb->sb_flags |= SB_NOCOALESCE; 226 if (inp->inp_vflag & INP_IPV6) 227 so->so_proto = &toe6_protosw; 228 else 229 so->so_proto = &toe_protosw; 230 SOCKBUF_UNLOCK(sb); 231 232 /* Update TCP PCB */ 233 tp->tod = &td->tod; 234 tp->t_toe = toep; 235 tp->t_flags |= TF_TOE; 236 237 /* Install an extra hold on inp */ 238 toep->inp = inp; 239 toep->flags |= TPF_ATTACHED; 240 in_pcbref(inp); 241 242 /* Add the TOE PCB to the active list */ 243 mtx_lock(&td->toep_list_lock); 244 TAILQ_INSERT_HEAD(&td->toep_list, toep, link); 245 mtx_unlock(&td->toep_list_lock); 246 } 247 248 /* This is _not_ the normal way to "unoffload" a socket. */ 249 void 250 undo_offload_socket(struct socket *so) 251 { 252 struct inpcb *inp = sotoinpcb(so); 253 struct tcpcb *tp = intotcpcb(inp); 254 struct toepcb *toep = tp->t_toe; 255 struct tom_data *td = toep->td; 256 struct sockbuf *sb; 257 258 INP_WLOCK_ASSERT(inp); 259 260 sb = &so->so_snd; 261 SOCKBUF_LOCK(sb); 262 sb->sb_flags &= ~SB_NOCOALESCE; 263 SOCKBUF_UNLOCK(sb); 264 sb = &so->so_rcv; 265 SOCKBUF_LOCK(sb); 266 sb->sb_flags &= ~SB_NOCOALESCE; 267 SOCKBUF_UNLOCK(sb); 268 269 tp->tod = NULL; 270 tp->t_toe = NULL; 271 tp->t_flags &= ~TF_TOE; 272 273 toep->inp = NULL; 274 toep->flags &= ~TPF_ATTACHED; 275 if (in_pcbrele_wlocked(inp)) 276 panic("%s: inp freed.", __func__); 277 278 mtx_lock(&td->toep_list_lock); 279 TAILQ_REMOVE(&td->toep_list, toep, link); 280 mtx_unlock(&td->toep_list_lock); 281 } 282 283 static void 284 release_offload_resources(struct toepcb *toep) 285 { 286 struct tom_data *td = toep->td; 287 struct adapter *sc = td_adapter(td); 288 int tid = toep->tid; 289 290 KASSERT(!(toep->flags & TPF_CPL_PENDING), 291 ("%s: %p has CPL pending.", __func__, toep)); 292 KASSERT(!(toep->flags & TPF_ATTACHED), 293 ("%s: %p is still attached.", __func__, toep)); 294 295 CTR5(KTR_CXGBE, "%s: toep %p (tid %d, l2te %p, ce %p)", 296 __func__, toep, tid, toep->l2te, toep->ce); 297 298 /* 299 * These queues should have been emptied at approximately the same time 300 * that a normal connection's socket's so_snd would have been purged or 301 * drained. Do _not_ clean up here. 302 */ 303 MPASS(mbufq_len(&toep->ulp_pduq) == 0); 304 MPASS(mbufq_len(&toep->ulp_pdu_reclaimq) == 0); 305 #ifdef INVARIANTS 306 if (toep->ulp_mode == ULP_MODE_TCPDDP) 307 ddp_assert_empty(toep); 308 #endif 309 310 if (toep->l2te) 311 t4_l2t_release(toep->l2te); 312 313 if (tid >= 0) { 314 remove_tid(sc, tid, toep->ce ? 2 : 1); 315 release_tid(sc, tid, toep->ctrlq); 316 } 317 318 if (toep->ce) 319 release_lip(td, toep->ce); 320 321 #ifdef RATELIMIT 322 if (toep->tc_idx != -1) 323 t4_release_cl_rl_kbps(sc, toep->vi->pi->port_id, toep->tc_idx); 324 #endif 325 mtx_lock(&td->toep_list_lock); 326 TAILQ_REMOVE(&td->toep_list, toep, link); 327 mtx_unlock(&td->toep_list_lock); 328 329 free_toepcb(toep); 330 } 331 332 /* 333 * The kernel is done with the TCP PCB and this is our opportunity to unhook the 334 * toepcb hanging off of it. If the TOE driver is also done with the toepcb (no 335 * pending CPL) then it is time to release all resources tied to the toepcb. 336 * 337 * Also gets called when an offloaded active open fails and the TOM wants the 338 * kernel to take the TCP PCB back. 339 */ 340 static void 341 t4_pcb_detach(struct toedev *tod __unused, struct tcpcb *tp) 342 { 343 #if defined(KTR) || defined(INVARIANTS) 344 struct inpcb *inp = tp->t_inpcb; 345 #endif 346 struct toepcb *toep = tp->t_toe; 347 348 INP_WLOCK_ASSERT(inp); 349 350 KASSERT(toep != NULL, ("%s: toep is NULL", __func__)); 351 KASSERT(toep->flags & TPF_ATTACHED, 352 ("%s: not attached", __func__)); 353 354 #ifdef KTR 355 if (tp->t_state == TCPS_SYN_SENT) { 356 CTR6(KTR_CXGBE, "%s: atid %d, toep %p (0x%x), inp %p (0x%x)", 357 __func__, toep->tid, toep, toep->flags, inp, 358 inp->inp_flags); 359 } else { 360 CTR6(KTR_CXGBE, 361 "t4_pcb_detach: tid %d (%s), toep %p (0x%x), inp %p (0x%x)", 362 toep->tid, tcpstates[tp->t_state], toep, toep->flags, inp, 363 inp->inp_flags); 364 } 365 #endif 366 367 tp->t_toe = NULL; 368 tp->t_flags &= ~TF_TOE; 369 toep->flags &= ~TPF_ATTACHED; 370 371 if (!(toep->flags & TPF_CPL_PENDING)) 372 release_offload_resources(toep); 373 } 374 375 /* 376 * setsockopt handler. 377 */ 378 static void 379 t4_ctloutput(struct toedev *tod, struct tcpcb *tp, int dir, int name) 380 { 381 struct adapter *sc = tod->tod_softc; 382 struct toepcb *toep = tp->t_toe; 383 384 if (dir == SOPT_GET) 385 return; 386 387 CTR4(KTR_CXGBE, "%s: tp %p, dir %u, name %u", __func__, tp, dir, name); 388 389 switch (name) { 390 case TCP_NODELAY: 391 if (tp->t_state != TCPS_ESTABLISHED) 392 break; 393 t4_set_tcb_field(sc, toep->ctrlq, toep->tid, W_TCB_T_FLAGS, 394 V_TF_NAGLE(1), V_TF_NAGLE(tp->t_flags & TF_NODELAY ? 0 : 1), 395 0, 0, toep->ofld_rxq->iq.abs_id); 396 break; 397 default: 398 break; 399 } 400 } 401 402 /* 403 * The TOE driver will not receive any more CPLs for the tid associated with the 404 * toepcb; release the hold on the inpcb. 405 */ 406 void 407 final_cpl_received(struct toepcb *toep) 408 { 409 struct inpcb *inp = toep->inp; 410 411 KASSERT(inp != NULL, ("%s: inp is NULL", __func__)); 412 INP_WLOCK_ASSERT(inp); 413 KASSERT(toep->flags & TPF_CPL_PENDING, 414 ("%s: CPL not pending already?", __func__)); 415 416 CTR6(KTR_CXGBE, "%s: tid %d, toep %p (0x%x), inp %p (0x%x)", 417 __func__, toep->tid, toep, toep->flags, inp, inp->inp_flags); 418 419 if (toep->ulp_mode == ULP_MODE_TCPDDP) 420 release_ddp_resources(toep); 421 toep->inp = NULL; 422 toep->flags &= ~TPF_CPL_PENDING; 423 mbufq_drain(&toep->ulp_pdu_reclaimq); 424 425 if (!(toep->flags & TPF_ATTACHED)) 426 release_offload_resources(toep); 427 428 if (!in_pcbrele_wlocked(inp)) 429 INP_WUNLOCK(inp); 430 } 431 432 void 433 insert_tid(struct adapter *sc, int tid, void *ctx, int ntids) 434 { 435 struct tid_info *t = &sc->tids; 436 437 t->tid_tab[tid] = ctx; 438 atomic_add_int(&t->tids_in_use, ntids); 439 } 440 441 void * 442 lookup_tid(struct adapter *sc, int tid) 443 { 444 struct tid_info *t = &sc->tids; 445 446 return (t->tid_tab[tid]); 447 } 448 449 void 450 update_tid(struct adapter *sc, int tid, void *ctx) 451 { 452 struct tid_info *t = &sc->tids; 453 454 t->tid_tab[tid] = ctx; 455 } 456 457 void 458 remove_tid(struct adapter *sc, int tid, int ntids) 459 { 460 struct tid_info *t = &sc->tids; 461 462 t->tid_tab[tid] = NULL; 463 atomic_subtract_int(&t->tids_in_use, ntids); 464 } 465 466 void 467 release_tid(struct adapter *sc, int tid, struct sge_wrq *ctrlq) 468 { 469 struct wrqe *wr; 470 struct cpl_tid_release *req; 471 472 wr = alloc_wrqe(sizeof(*req), ctrlq); 473 if (wr == NULL) { 474 queue_tid_release(sc, tid); /* defer */ 475 return; 476 } 477 req = wrtod(wr); 478 479 INIT_TP_WR_MIT_CPL(req, CPL_TID_RELEASE, tid); 480 481 t4_wrq_tx(sc, wr); 482 } 483 484 static void 485 queue_tid_release(struct adapter *sc, int tid) 486 { 487 488 CXGBE_UNIMPLEMENTED("deferred tid release"); 489 } 490 491 /* 492 * What mtu_idx to use, given a 4-tuple and/or an MSS cap 493 */ 494 int 495 find_best_mtu_idx(struct adapter *sc, struct in_conninfo *inc, int pmss) 496 { 497 unsigned short *mtus = &sc->params.mtus[0]; 498 int i, mss, n; 499 500 KASSERT(inc != NULL || pmss > 0, 501 ("%s: at least one of inc/pmss must be specified", __func__)); 502 503 mss = inc ? tcp_mssopt(inc) : pmss; 504 if (pmss > 0 && mss > pmss) 505 mss = pmss; 506 507 if (inc->inc_flags & INC_ISIPV6) 508 n = sizeof(struct ip6_hdr) + sizeof(struct tcphdr); 509 else 510 n = sizeof(struct ip) + sizeof(struct tcphdr); 511 512 for (i = 0; i < NMTUS - 1 && mtus[i + 1] <= mss + n; i++) 513 continue; 514 515 return (i); 516 } 517 518 /* 519 * Determine the receive window size for a socket. 520 */ 521 u_long 522 select_rcv_wnd(struct socket *so) 523 { 524 unsigned long wnd; 525 526 SOCKBUF_LOCK_ASSERT(&so->so_rcv); 527 528 wnd = sbspace(&so->so_rcv); 529 if (wnd < MIN_RCV_WND) 530 wnd = MIN_RCV_WND; 531 532 return min(wnd, MAX_RCV_WND); 533 } 534 535 int 536 select_rcv_wscale(void) 537 { 538 int wscale = 0; 539 unsigned long space = sb_max; 540 541 if (space > MAX_RCV_WND) 542 space = MAX_RCV_WND; 543 544 while (wscale < TCP_MAX_WINSHIFT && (TCP_MAXWIN << wscale) < space) 545 wscale++; 546 547 return (wscale); 548 } 549 550 /* 551 * socket so could be a listening socket too. 552 */ 553 uint64_t 554 calc_opt0(struct socket *so, struct vi_info *vi, struct l2t_entry *e, 555 int mtu_idx, int rscale, int rx_credits, int ulp_mode) 556 { 557 uint64_t opt0; 558 559 KASSERT(rx_credits <= M_RCV_BUFSIZ, 560 ("%s: rcv_bufsiz too high", __func__)); 561 562 opt0 = F_TCAM_BYPASS | V_WND_SCALE(rscale) | V_MSS_IDX(mtu_idx) | 563 V_ULP_MODE(ulp_mode) | V_RCV_BUFSIZ(rx_credits); 564 565 if (so != NULL) { 566 struct inpcb *inp = sotoinpcb(so); 567 struct tcpcb *tp = intotcpcb(inp); 568 int keepalive = tcp_always_keepalive || 569 so_options_get(so) & SO_KEEPALIVE; 570 571 opt0 |= V_NAGLE((tp->t_flags & TF_NODELAY) == 0); 572 opt0 |= V_KEEP_ALIVE(keepalive != 0); 573 } 574 575 if (e != NULL) 576 opt0 |= V_L2T_IDX(e->idx); 577 578 if (vi != NULL) { 579 opt0 |= V_SMAC_SEL(vi->smt_idx); 580 opt0 |= V_TX_CHAN(vi->pi->tx_chan); 581 } 582 583 return htobe64(opt0); 584 } 585 586 uint64_t 587 select_ntuple(struct vi_info *vi, struct l2t_entry *e) 588 { 589 struct adapter *sc = vi->pi->adapter; 590 struct tp_params *tp = &sc->params.tp; 591 uint16_t viid = vi->viid; 592 uint64_t ntuple = 0; 593 594 /* 595 * Initialize each of the fields which we care about which are present 596 * in the Compressed Filter Tuple. 597 */ 598 if (tp->vlan_shift >= 0 && e->vlan != CPL_L2T_VLAN_NONE) 599 ntuple |= (uint64_t)(F_FT_VLAN_VLD | e->vlan) << tp->vlan_shift; 600 601 if (tp->port_shift >= 0) 602 ntuple |= (uint64_t)e->lport << tp->port_shift; 603 604 if (tp->protocol_shift >= 0) 605 ntuple |= (uint64_t)IPPROTO_TCP << tp->protocol_shift; 606 607 if (tp->vnic_shift >= 0) { 608 uint32_t vf = G_FW_VIID_VIN(viid); 609 uint32_t pf = G_FW_VIID_PFN(viid); 610 uint32_t vld = G_FW_VIID_VIVLD(viid); 611 612 ntuple |= (uint64_t)(V_FT_VNID_ID_VF(vf) | V_FT_VNID_ID_PF(pf) | 613 V_FT_VNID_ID_VLD(vld)) << tp->vnic_shift; 614 } 615 616 if (is_t4(sc)) 617 return (htobe32((uint32_t)ntuple)); 618 else 619 return (htobe64(V_FILTER_TUPLE(ntuple))); 620 } 621 622 void 623 set_tcpddp_ulp_mode(struct toepcb *toep) 624 { 625 626 toep->ulp_mode = ULP_MODE_TCPDDP; 627 ddp_init_toep(toep); 628 } 629 630 int 631 negative_advice(int status) 632 { 633 634 return (status == CPL_ERR_RTX_NEG_ADVICE || 635 status == CPL_ERR_PERSIST_NEG_ADVICE || 636 status == CPL_ERR_KEEPALV_NEG_ADVICE); 637 } 638 639 static int 640 alloc_tid_tabs(struct tid_info *t) 641 { 642 size_t size; 643 unsigned int i; 644 645 size = t->ntids * sizeof(*t->tid_tab) + 646 t->natids * sizeof(*t->atid_tab) + 647 t->nstids * sizeof(*t->stid_tab); 648 649 t->tid_tab = malloc(size, M_CXGBE, M_ZERO | M_NOWAIT); 650 if (t->tid_tab == NULL) 651 return (ENOMEM); 652 653 mtx_init(&t->atid_lock, "atid lock", NULL, MTX_DEF); 654 t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids]; 655 t->afree = t->atid_tab; 656 t->atids_in_use = 0; 657 for (i = 1; i < t->natids; i++) 658 t->atid_tab[i - 1].next = &t->atid_tab[i]; 659 t->atid_tab[t->natids - 1].next = NULL; 660 661 mtx_init(&t->stid_lock, "stid lock", NULL, MTX_DEF); 662 t->stid_tab = (struct listen_ctx **)&t->atid_tab[t->natids]; 663 t->stids_in_use = 0; 664 TAILQ_INIT(&t->stids); 665 t->nstids_free_head = t->nstids; 666 667 atomic_store_rel_int(&t->tids_in_use, 0); 668 669 return (0); 670 } 671 672 static void 673 free_tid_tabs(struct tid_info *t) 674 { 675 KASSERT(t->tids_in_use == 0, 676 ("%s: %d tids still in use.", __func__, t->tids_in_use)); 677 KASSERT(t->atids_in_use == 0, 678 ("%s: %d atids still in use.", __func__, t->atids_in_use)); 679 KASSERT(t->stids_in_use == 0, 680 ("%s: %d tids still in use.", __func__, t->stids_in_use)); 681 682 free(t->tid_tab, M_CXGBE); 683 t->tid_tab = NULL; 684 685 if (mtx_initialized(&t->atid_lock)) 686 mtx_destroy(&t->atid_lock); 687 if (mtx_initialized(&t->stid_lock)) 688 mtx_destroy(&t->stid_lock); 689 } 690 691 static int 692 add_lip(struct adapter *sc, struct in6_addr *lip) 693 { 694 struct fw_clip_cmd c; 695 696 ASSERT_SYNCHRONIZED_OP(sc); 697 /* mtx_assert(&td->clip_table_lock, MA_OWNED); */ 698 699 memset(&c, 0, sizeof(c)); 700 c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST | 701 F_FW_CMD_WRITE); 702 c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_ALLOC | FW_LEN16(c)); 703 c.ip_hi = *(uint64_t *)&lip->s6_addr[0]; 704 c.ip_lo = *(uint64_t *)&lip->s6_addr[8]; 705 706 return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c)); 707 } 708 709 static int 710 delete_lip(struct adapter *sc, struct in6_addr *lip) 711 { 712 struct fw_clip_cmd c; 713 714 ASSERT_SYNCHRONIZED_OP(sc); 715 /* mtx_assert(&td->clip_table_lock, MA_OWNED); */ 716 717 memset(&c, 0, sizeof(c)); 718 c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST | 719 F_FW_CMD_READ); 720 c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_FREE | FW_LEN16(c)); 721 c.ip_hi = *(uint64_t *)&lip->s6_addr[0]; 722 c.ip_lo = *(uint64_t *)&lip->s6_addr[8]; 723 724 return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c)); 725 } 726 727 static struct clip_entry * 728 search_lip(struct tom_data *td, struct in6_addr *lip) 729 { 730 struct clip_entry *ce; 731 732 mtx_assert(&td->clip_table_lock, MA_OWNED); 733 734 TAILQ_FOREACH(ce, &td->clip_table, link) { 735 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) 736 return (ce); 737 } 738 739 return (NULL); 740 } 741 742 struct clip_entry * 743 hold_lip(struct tom_data *td, struct in6_addr *lip, struct clip_entry *ce) 744 { 745 746 mtx_lock(&td->clip_table_lock); 747 if (ce == NULL) 748 ce = search_lip(td, lip); 749 if (ce != NULL) 750 ce->refcount++; 751 mtx_unlock(&td->clip_table_lock); 752 753 return (ce); 754 } 755 756 void 757 release_lip(struct tom_data *td, struct clip_entry *ce) 758 { 759 760 mtx_lock(&td->clip_table_lock); 761 KASSERT(search_lip(td, &ce->lip) == ce, 762 ("%s: CLIP entry %p p not in CLIP table.", __func__, ce)); 763 KASSERT(ce->refcount > 0, 764 ("%s: CLIP entry %p has refcount 0", __func__, ce)); 765 --ce->refcount; 766 mtx_unlock(&td->clip_table_lock); 767 } 768 769 static void 770 init_clip_table(struct adapter *sc, struct tom_data *td) 771 { 772 773 ASSERT_SYNCHRONIZED_OP(sc); 774 775 mtx_init(&td->clip_table_lock, "CLIP table lock", NULL, MTX_DEF); 776 TAILQ_INIT(&td->clip_table); 777 td->clip_gen = -1; 778 779 update_clip_table(sc, td); 780 } 781 782 static void 783 update_clip(struct adapter *sc, void *arg __unused) 784 { 785 786 if (begin_synchronized_op(sc, NULL, HOLD_LOCK, "t4tomuc")) 787 return; 788 789 if (uld_active(sc, ULD_TOM)) 790 update_clip_table(sc, sc->tom_softc); 791 792 end_synchronized_op(sc, LOCK_HELD); 793 } 794 795 static void 796 t4_clip_task(void *arg, int count) 797 { 798 799 t4_iterate(update_clip, NULL); 800 } 801 802 static void 803 update_clip_table(struct adapter *sc, struct tom_data *td) 804 { 805 struct rm_priotracker in6_ifa_tracker; 806 struct in6_ifaddr *ia; 807 struct in6_addr *lip, tlip; 808 struct clip_head stale; 809 struct clip_entry *ce, *ce_temp; 810 struct vi_info *vi; 811 int rc, gen, i, j; 812 uintptr_t last_vnet; 813 814 ASSERT_SYNCHRONIZED_OP(sc); 815 816 IN6_IFADDR_RLOCK(&in6_ifa_tracker); 817 mtx_lock(&td->clip_table_lock); 818 819 gen = atomic_load_acq_int(&in6_ifaddr_gen); 820 if (gen == td->clip_gen) 821 goto done; 822 823 TAILQ_INIT(&stale); 824 TAILQ_CONCAT(&stale, &td->clip_table, link); 825 826 /* 827 * last_vnet optimizes the common cases where all if_vnet = NULL (no 828 * VIMAGE) or all if_vnet = vnet0. 829 */ 830 last_vnet = (uintptr_t)(-1); 831 for_each_port(sc, i) 832 for_each_vi(sc->port[i], j, vi) { 833 if (last_vnet == (uintptr_t)vi->ifp->if_vnet) 834 continue; 835 836 /* XXX: races with if_vmove */ 837 CURVNET_SET(vi->ifp->if_vnet); 838 TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) { 839 lip = &ia->ia_addr.sin6_addr; 840 841 KASSERT(!IN6_IS_ADDR_MULTICAST(lip), 842 ("%s: mcast address in in6_ifaddr list", __func__)); 843 844 if (IN6_IS_ADDR_LOOPBACK(lip)) 845 continue; 846 if (IN6_IS_SCOPE_EMBED(lip)) { 847 /* Remove the embedded scope */ 848 tlip = *lip; 849 lip = &tlip; 850 in6_clearscope(lip); 851 } 852 /* 853 * XXX: how to weed out the link local address for the 854 * loopback interface? It's fe80::1 usually (always?). 855 */ 856 857 /* 858 * If it's in the main list then we already know it's 859 * not stale. 860 */ 861 TAILQ_FOREACH(ce, &td->clip_table, link) { 862 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) 863 goto next; 864 } 865 866 /* 867 * If it's in the stale list we should move it to the 868 * main list. 869 */ 870 TAILQ_FOREACH(ce, &stale, link) { 871 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) { 872 TAILQ_REMOVE(&stale, ce, link); 873 TAILQ_INSERT_TAIL(&td->clip_table, ce, 874 link); 875 goto next; 876 } 877 } 878 879 /* A new IP6 address; add it to the CLIP table */ 880 ce = malloc(sizeof(*ce), M_CXGBE, M_NOWAIT); 881 memcpy(&ce->lip, lip, sizeof(ce->lip)); 882 ce->refcount = 0; 883 rc = add_lip(sc, lip); 884 if (rc == 0) 885 TAILQ_INSERT_TAIL(&td->clip_table, ce, link); 886 else { 887 char ip[INET6_ADDRSTRLEN]; 888 889 inet_ntop(AF_INET6, &ce->lip, &ip[0], 890 sizeof(ip)); 891 log(LOG_ERR, "%s: could not add %s (%d)\n", 892 __func__, ip, rc); 893 free(ce, M_CXGBE); 894 } 895 next: 896 continue; 897 } 898 CURVNET_RESTORE(); 899 last_vnet = (uintptr_t)vi->ifp->if_vnet; 900 } 901 902 /* 903 * Remove stale addresses (those no longer in V_in6_ifaddrhead) that are 904 * no longer referenced by the driver. 905 */ 906 TAILQ_FOREACH_SAFE(ce, &stale, link, ce_temp) { 907 if (ce->refcount == 0) { 908 rc = delete_lip(sc, &ce->lip); 909 if (rc == 0) { 910 TAILQ_REMOVE(&stale, ce, link); 911 free(ce, M_CXGBE); 912 } else { 913 char ip[INET6_ADDRSTRLEN]; 914 915 inet_ntop(AF_INET6, &ce->lip, &ip[0], 916 sizeof(ip)); 917 log(LOG_ERR, "%s: could not delete %s (%d)\n", 918 __func__, ip, rc); 919 } 920 } 921 } 922 /* The ones that are still referenced need to stay in the CLIP table */ 923 TAILQ_CONCAT(&td->clip_table, &stale, link); 924 925 td->clip_gen = gen; 926 done: 927 mtx_unlock(&td->clip_table_lock); 928 IN6_IFADDR_RUNLOCK(&in6_ifa_tracker); 929 } 930 931 static void 932 destroy_clip_table(struct adapter *sc, struct tom_data *td) 933 { 934 struct clip_entry *ce, *ce_temp; 935 936 if (mtx_initialized(&td->clip_table_lock)) { 937 mtx_lock(&td->clip_table_lock); 938 TAILQ_FOREACH_SAFE(ce, &td->clip_table, link, ce_temp) { 939 KASSERT(ce->refcount == 0, 940 ("%s: CLIP entry %p still in use (%d)", __func__, 941 ce, ce->refcount)); 942 TAILQ_REMOVE(&td->clip_table, ce, link); 943 delete_lip(sc, &ce->lip); 944 free(ce, M_CXGBE); 945 } 946 mtx_unlock(&td->clip_table_lock); 947 mtx_destroy(&td->clip_table_lock); 948 } 949 } 950 951 static void 952 free_tom_data(struct adapter *sc, struct tom_data *td) 953 { 954 955 ASSERT_SYNCHRONIZED_OP(sc); 956 957 KASSERT(TAILQ_EMPTY(&td->toep_list), 958 ("%s: TOE PCB list is not empty.", __func__)); 959 KASSERT(td->lctx_count == 0, 960 ("%s: lctx hash table is not empty.", __func__)); 961 962 t4_free_ppod_region(&td->pr); 963 destroy_clip_table(sc, td); 964 965 if (td->listen_mask != 0) 966 hashdestroy(td->listen_hash, M_CXGBE, td->listen_mask); 967 968 if (mtx_initialized(&td->unsent_wr_lock)) 969 mtx_destroy(&td->unsent_wr_lock); 970 if (mtx_initialized(&td->lctx_hash_lock)) 971 mtx_destroy(&td->lctx_hash_lock); 972 if (mtx_initialized(&td->toep_list_lock)) 973 mtx_destroy(&td->toep_list_lock); 974 975 free_tid_tabs(&sc->tids); 976 free(td, M_CXGBE); 977 } 978 979 static void 980 reclaim_wr_resources(void *arg, int count) 981 { 982 struct tom_data *td = arg; 983 STAILQ_HEAD(, wrqe) twr_list = STAILQ_HEAD_INITIALIZER(twr_list); 984 struct cpl_act_open_req *cpl; 985 u_int opcode, atid; 986 struct wrqe *wr; 987 struct adapter *sc; 988 989 mtx_lock(&td->unsent_wr_lock); 990 STAILQ_SWAP(&td->unsent_wr_list, &twr_list, wrqe); 991 mtx_unlock(&td->unsent_wr_lock); 992 993 while ((wr = STAILQ_FIRST(&twr_list)) != NULL) { 994 STAILQ_REMOVE_HEAD(&twr_list, link); 995 996 cpl = wrtod(wr); 997 opcode = GET_OPCODE(cpl); 998 999 switch (opcode) { 1000 case CPL_ACT_OPEN_REQ: 1001 case CPL_ACT_OPEN_REQ6: 1002 atid = G_TID_TID(be32toh(OPCODE_TID(cpl))); 1003 sc = td_adapter(td); 1004 1005 CTR2(KTR_CXGBE, "%s: atid %u ", __func__, atid); 1006 act_open_failure_cleanup(sc, atid, EHOSTUNREACH); 1007 free(wr, M_CXGBE); 1008 break; 1009 default: 1010 log(LOG_ERR, "%s: leaked work request %p, wr_len %d, " 1011 "opcode %x\n", __func__, wr, wr->wr_len, opcode); 1012 /* WR not freed here; go look at it with a debugger. */ 1013 } 1014 } 1015 } 1016 1017 /* 1018 * Ground control to Major TOM 1019 * Commencing countdown, engines on 1020 */ 1021 static int 1022 t4_tom_activate(struct adapter *sc) 1023 { 1024 struct tom_data *td; 1025 struct toedev *tod; 1026 struct vi_info *vi; 1027 struct sge_ofld_rxq *ofld_rxq; 1028 int i, j, rc, v; 1029 1030 ASSERT_SYNCHRONIZED_OP(sc); 1031 1032 /* per-adapter softc for TOM */ 1033 td = malloc(sizeof(*td), M_CXGBE, M_ZERO | M_NOWAIT); 1034 if (td == NULL) 1035 return (ENOMEM); 1036 1037 /* List of TOE PCBs and associated lock */ 1038 mtx_init(&td->toep_list_lock, "PCB list lock", NULL, MTX_DEF); 1039 TAILQ_INIT(&td->toep_list); 1040 1041 /* Listen context */ 1042 mtx_init(&td->lctx_hash_lock, "lctx hash lock", NULL, MTX_DEF); 1043 td->listen_hash = hashinit_flags(LISTEN_HASH_SIZE, M_CXGBE, 1044 &td->listen_mask, HASH_NOWAIT); 1045 1046 /* List of WRs for which L2 resolution failed */ 1047 mtx_init(&td->unsent_wr_lock, "Unsent WR list lock", NULL, MTX_DEF); 1048 STAILQ_INIT(&td->unsent_wr_list); 1049 TASK_INIT(&td->reclaim_wr_resources, 0, reclaim_wr_resources, td); 1050 1051 /* TID tables */ 1052 rc = alloc_tid_tabs(&sc->tids); 1053 if (rc != 0) 1054 goto done; 1055 1056 rc = t4_init_ppod_region(&td->pr, &sc->vres.ddp, 1057 t4_read_reg(sc, A_ULP_RX_TDDP_PSZ), "TDDP page pods"); 1058 if (rc != 0) 1059 goto done; 1060 t4_set_reg_field(sc, A_ULP_RX_TDDP_TAGMASK, 1061 V_TDDPTAGMASK(M_TDDPTAGMASK), td->pr.pr_tag_mask); 1062 1063 /* CLIP table for IPv6 offload */ 1064 init_clip_table(sc, td); 1065 1066 /* toedev ops */ 1067 tod = &td->tod; 1068 init_toedev(tod); 1069 tod->tod_softc = sc; 1070 tod->tod_connect = t4_connect; 1071 tod->tod_listen_start = t4_listen_start; 1072 tod->tod_listen_stop = t4_listen_stop; 1073 tod->tod_rcvd = t4_rcvd; 1074 tod->tod_output = t4_tod_output; 1075 tod->tod_send_rst = t4_send_rst; 1076 tod->tod_send_fin = t4_send_fin; 1077 tod->tod_pcb_detach = t4_pcb_detach; 1078 tod->tod_l2_update = t4_l2_update; 1079 tod->tod_syncache_added = t4_syncache_added; 1080 tod->tod_syncache_removed = t4_syncache_removed; 1081 tod->tod_syncache_respond = t4_syncache_respond; 1082 tod->tod_offload_socket = t4_offload_socket; 1083 tod->tod_ctloutput = t4_ctloutput; 1084 1085 for_each_port(sc, i) { 1086 for_each_vi(sc->port[i], v, vi) { 1087 TOEDEV(vi->ifp) = &td->tod; 1088 for_each_ofld_rxq(vi, j, ofld_rxq) { 1089 ofld_rxq->iq.set_tcb_rpl = do_set_tcb_rpl; 1090 ofld_rxq->iq.l2t_write_rpl = do_l2t_write_rpl2; 1091 } 1092 } 1093 } 1094 1095 sc->tom_softc = td; 1096 register_toedev(sc->tom_softc); 1097 1098 done: 1099 if (rc != 0) 1100 free_tom_data(sc, td); 1101 return (rc); 1102 } 1103 1104 static int 1105 t4_tom_deactivate(struct adapter *sc) 1106 { 1107 int rc = 0; 1108 struct tom_data *td = sc->tom_softc; 1109 1110 ASSERT_SYNCHRONIZED_OP(sc); 1111 1112 if (td == NULL) 1113 return (0); /* XXX. KASSERT? */ 1114 1115 if (sc->offload_map != 0) 1116 return (EBUSY); /* at least one port has IFCAP_TOE enabled */ 1117 1118 if (uld_active(sc, ULD_IWARP) || uld_active(sc, ULD_ISCSI)) 1119 return (EBUSY); /* both iWARP and iSCSI rely on the TOE. */ 1120 1121 mtx_lock(&td->toep_list_lock); 1122 if (!TAILQ_EMPTY(&td->toep_list)) 1123 rc = EBUSY; 1124 mtx_unlock(&td->toep_list_lock); 1125 1126 mtx_lock(&td->lctx_hash_lock); 1127 if (td->lctx_count > 0) 1128 rc = EBUSY; 1129 mtx_unlock(&td->lctx_hash_lock); 1130 1131 taskqueue_drain(taskqueue_thread, &td->reclaim_wr_resources); 1132 mtx_lock(&td->unsent_wr_lock); 1133 if (!STAILQ_EMPTY(&td->unsent_wr_list)) 1134 rc = EBUSY; 1135 mtx_unlock(&td->unsent_wr_lock); 1136 1137 if (rc == 0) { 1138 unregister_toedev(sc->tom_softc); 1139 free_tom_data(sc, td); 1140 sc->tom_softc = NULL; 1141 } 1142 1143 return (rc); 1144 } 1145 1146 static void 1147 t4_tom_ifaddr_event(void *arg __unused, struct ifnet *ifp) 1148 { 1149 1150 atomic_add_rel_int(&in6_ifaddr_gen, 1); 1151 taskqueue_enqueue_timeout(taskqueue_thread, &clip_task, -hz / 4); 1152 } 1153 1154 static int 1155 t4_aio_queue_tom(struct socket *so, struct kaiocb *job) 1156 { 1157 struct tcpcb *tp = so_sototcpcb(so); 1158 struct toepcb *toep = tp->t_toe; 1159 int error; 1160 1161 if (toep->ulp_mode == ULP_MODE_TCPDDP) { 1162 error = t4_aio_queue_ddp(so, job); 1163 if (error != EOPNOTSUPP) 1164 return (error); 1165 } 1166 1167 return (t4_aio_queue_aiotx(so, job)); 1168 } 1169 1170 static int 1171 t4_tom_mod_load(void) 1172 { 1173 int rc; 1174 struct protosw *tcp_protosw, *tcp6_protosw; 1175 1176 /* CPL handlers */ 1177 t4_init_connect_cpl_handlers(); 1178 t4_init_listen_cpl_handlers(); 1179 t4_init_cpl_io_handlers(); 1180 1181 rc = t4_ddp_mod_load(); 1182 if (rc != 0) 1183 return (rc); 1184 1185 tcp_protosw = pffindproto(PF_INET, IPPROTO_TCP, SOCK_STREAM); 1186 if (tcp_protosw == NULL) 1187 return (ENOPROTOOPT); 1188 bcopy(tcp_protosw, &toe_protosw, sizeof(toe_protosw)); 1189 bcopy(tcp_protosw->pr_usrreqs, &toe_usrreqs, sizeof(toe_usrreqs)); 1190 toe_usrreqs.pru_aio_queue = t4_aio_queue_tom; 1191 toe_protosw.pr_usrreqs = &toe_usrreqs; 1192 1193 tcp6_protosw = pffindproto(PF_INET6, IPPROTO_TCP, SOCK_STREAM); 1194 if (tcp6_protosw == NULL) 1195 return (ENOPROTOOPT); 1196 bcopy(tcp6_protosw, &toe6_protosw, sizeof(toe6_protosw)); 1197 bcopy(tcp6_protosw->pr_usrreqs, &toe6_usrreqs, sizeof(toe6_usrreqs)); 1198 toe6_usrreqs.pru_aio_queue = t4_aio_queue_tom; 1199 toe6_protosw.pr_usrreqs = &toe6_usrreqs; 1200 1201 TIMEOUT_TASK_INIT(taskqueue_thread, &clip_task, 0, t4_clip_task, NULL); 1202 ifaddr_evhandler = EVENTHANDLER_REGISTER(ifaddr_event, 1203 t4_tom_ifaddr_event, NULL, EVENTHANDLER_PRI_ANY); 1204 1205 rc = t4_register_uld(&tom_uld_info); 1206 if (rc != 0) 1207 t4_tom_mod_unload(); 1208 1209 return (rc); 1210 } 1211 1212 static void 1213 tom_uninit(struct adapter *sc, void *arg __unused) 1214 { 1215 if (begin_synchronized_op(sc, NULL, SLEEP_OK | INTR_OK, "t4tomun")) 1216 return; 1217 1218 /* Try to free resources (works only if no port has IFCAP_TOE) */ 1219 if (uld_active(sc, ULD_TOM)) 1220 t4_deactivate_uld(sc, ULD_TOM); 1221 1222 end_synchronized_op(sc, 0); 1223 } 1224 1225 static int 1226 t4_tom_mod_unload(void) 1227 { 1228 t4_iterate(tom_uninit, NULL); 1229 1230 if (t4_unregister_uld(&tom_uld_info) == EBUSY) 1231 return (EBUSY); 1232 1233 if (ifaddr_evhandler) { 1234 EVENTHANDLER_DEREGISTER(ifaddr_event, ifaddr_evhandler); 1235 taskqueue_cancel_timeout(taskqueue_thread, &clip_task, NULL); 1236 } 1237 1238 t4_ddp_mod_unload(); 1239 1240 t4_uninit_connect_cpl_handlers(); 1241 t4_uninit_listen_cpl_handlers(); 1242 t4_uninit_cpl_io_handlers(); 1243 1244 return (0); 1245 } 1246 #endif /* TCP_OFFLOAD */ 1247 1248 static int 1249 t4_tom_modevent(module_t mod, int cmd, void *arg) 1250 { 1251 int rc = 0; 1252 1253 #ifdef TCP_OFFLOAD 1254 switch (cmd) { 1255 case MOD_LOAD: 1256 rc = t4_tom_mod_load(); 1257 break; 1258 1259 case MOD_UNLOAD: 1260 rc = t4_tom_mod_unload(); 1261 break; 1262 1263 default: 1264 rc = EINVAL; 1265 } 1266 #else 1267 printf("t4_tom: compiled without TCP_OFFLOAD support.\n"); 1268 rc = EOPNOTSUPP; 1269 #endif 1270 return (rc); 1271 } 1272 1273 static moduledata_t t4_tom_moddata= { 1274 "t4_tom", 1275 t4_tom_modevent, 1276 0 1277 }; 1278 1279 MODULE_VERSION(t4_tom, 1); 1280 MODULE_DEPEND(t4_tom, toecore, 1, 1, 1); 1281 MODULE_DEPEND(t4_tom, t4nex, 1, 1, 1); 1282 DECLARE_MODULE(t4_tom, t4_tom_moddata, SI_SUB_EXEC, SI_ORDER_ANY); 1283