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