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 t4_set_tcb_field(sc, toep->ctrlq, toep->tid, W_TCB_T_FLAGS, 388 V_TF_NAGLE(1), V_TF_NAGLE(tp->t_flags & TF_NODELAY ? 0 : 1), 389 0, 0, toep->ofld_rxq->iq.abs_id); 390 break; 391 default: 392 break; 393 } 394 } 395 396 /* 397 * The TOE driver will not receive any more CPLs for the tid associated with the 398 * toepcb; release the hold on the inpcb. 399 */ 400 void 401 final_cpl_received(struct toepcb *toep) 402 { 403 struct inpcb *inp = toep->inp; 404 405 KASSERT(inp != NULL, ("%s: inp is NULL", __func__)); 406 INP_WLOCK_ASSERT(inp); 407 KASSERT(toep->flags & TPF_CPL_PENDING, 408 ("%s: CPL not pending already?", __func__)); 409 410 CTR6(KTR_CXGBE, "%s: tid %d, toep %p (0x%x), inp %p (0x%x)", 411 __func__, toep->tid, toep, toep->flags, inp, inp->inp_flags); 412 413 if (toep->ulp_mode == ULP_MODE_TCPDDP) 414 release_ddp_resources(toep); 415 toep->inp = NULL; 416 toep->flags &= ~TPF_CPL_PENDING; 417 mbufq_drain(&toep->ulp_pdu_reclaimq); 418 419 if (!(toep->flags & TPF_ATTACHED)) 420 release_offload_resources(toep); 421 422 if (!in_pcbrele_wlocked(inp)) 423 INP_WUNLOCK(inp); 424 } 425 426 void 427 insert_tid(struct adapter *sc, int tid, void *ctx, int ntids) 428 { 429 struct tid_info *t = &sc->tids; 430 431 t->tid_tab[tid] = ctx; 432 atomic_add_int(&t->tids_in_use, ntids); 433 } 434 435 void * 436 lookup_tid(struct adapter *sc, int tid) 437 { 438 struct tid_info *t = &sc->tids; 439 440 return (t->tid_tab[tid]); 441 } 442 443 void 444 update_tid(struct adapter *sc, int tid, void *ctx) 445 { 446 struct tid_info *t = &sc->tids; 447 448 t->tid_tab[tid] = ctx; 449 } 450 451 void 452 remove_tid(struct adapter *sc, int tid, int ntids) 453 { 454 struct tid_info *t = &sc->tids; 455 456 t->tid_tab[tid] = NULL; 457 atomic_subtract_int(&t->tids_in_use, ntids); 458 } 459 460 void 461 release_tid(struct adapter *sc, int tid, struct sge_wrq *ctrlq) 462 { 463 struct wrqe *wr; 464 struct cpl_tid_release *req; 465 466 wr = alloc_wrqe(sizeof(*req), ctrlq); 467 if (wr == NULL) { 468 queue_tid_release(sc, tid); /* defer */ 469 return; 470 } 471 req = wrtod(wr); 472 473 INIT_TP_WR_MIT_CPL(req, CPL_TID_RELEASE, tid); 474 475 t4_wrq_tx(sc, wr); 476 } 477 478 static void 479 queue_tid_release(struct adapter *sc, int tid) 480 { 481 482 CXGBE_UNIMPLEMENTED("deferred tid release"); 483 } 484 485 /* 486 * What mtu_idx to use, given a 4-tuple and/or an MSS cap 487 */ 488 int 489 find_best_mtu_idx(struct adapter *sc, struct in_conninfo *inc, int pmss) 490 { 491 unsigned short *mtus = &sc->params.mtus[0]; 492 int i, mss, n; 493 494 KASSERT(inc != NULL || pmss > 0, 495 ("%s: at least one of inc/pmss must be specified", __func__)); 496 497 mss = inc ? tcp_mssopt(inc) : pmss; 498 if (pmss > 0 && mss > pmss) 499 mss = pmss; 500 501 if (inc->inc_flags & INC_ISIPV6) 502 n = sizeof(struct ip6_hdr) + sizeof(struct tcphdr); 503 else 504 n = sizeof(struct ip) + sizeof(struct tcphdr); 505 506 for (i = 0; i < NMTUS - 1 && mtus[i + 1] <= mss + n; i++) 507 continue; 508 509 return (i); 510 } 511 512 /* 513 * Determine the receive window size for a socket. 514 */ 515 u_long 516 select_rcv_wnd(struct socket *so) 517 { 518 unsigned long wnd; 519 520 SOCKBUF_LOCK_ASSERT(&so->so_rcv); 521 522 wnd = sbspace(&so->so_rcv); 523 if (wnd < MIN_RCV_WND) 524 wnd = MIN_RCV_WND; 525 526 return min(wnd, MAX_RCV_WND); 527 } 528 529 int 530 select_rcv_wscale(void) 531 { 532 int wscale = 0; 533 unsigned long space = sb_max; 534 535 if (space > MAX_RCV_WND) 536 space = MAX_RCV_WND; 537 538 while (wscale < TCP_MAX_WINSHIFT && (TCP_MAXWIN << wscale) < space) 539 wscale++; 540 541 return (wscale); 542 } 543 544 extern int always_keepalive; 545 546 /* 547 * socket so could be a listening socket too. 548 */ 549 uint64_t 550 calc_opt0(struct socket *so, struct vi_info *vi, struct l2t_entry *e, 551 int mtu_idx, int rscale, int rx_credits, int ulp_mode) 552 { 553 uint64_t opt0; 554 555 KASSERT(rx_credits <= M_RCV_BUFSIZ, 556 ("%s: rcv_bufsiz too high", __func__)); 557 558 opt0 = F_TCAM_BYPASS | V_WND_SCALE(rscale) | V_MSS_IDX(mtu_idx) | 559 V_ULP_MODE(ulp_mode) | V_RCV_BUFSIZ(rx_credits); 560 561 if (so != NULL) { 562 struct inpcb *inp = sotoinpcb(so); 563 struct tcpcb *tp = intotcpcb(inp); 564 int keepalive = always_keepalive || 565 so_options_get(so) & SO_KEEPALIVE; 566 567 opt0 |= V_NAGLE((tp->t_flags & TF_NODELAY) == 0); 568 opt0 |= V_KEEP_ALIVE(keepalive != 0); 569 } 570 571 if (e != NULL) 572 opt0 |= V_L2T_IDX(e->idx); 573 574 if (vi != NULL) { 575 opt0 |= V_SMAC_SEL(vi->smt_idx); 576 opt0 |= V_TX_CHAN(vi->pi->tx_chan); 577 } 578 579 return htobe64(opt0); 580 } 581 582 uint64_t 583 select_ntuple(struct vi_info *vi, struct l2t_entry *e) 584 { 585 struct adapter *sc = vi->pi->adapter; 586 struct tp_params *tp = &sc->params.tp; 587 uint16_t viid = vi->viid; 588 uint64_t ntuple = 0; 589 590 /* 591 * Initialize each of the fields which we care about which are present 592 * in the Compressed Filter Tuple. 593 */ 594 if (tp->vlan_shift >= 0 && e->vlan != CPL_L2T_VLAN_NONE) 595 ntuple |= (uint64_t)(F_FT_VLAN_VLD | e->vlan) << tp->vlan_shift; 596 597 if (tp->port_shift >= 0) 598 ntuple |= (uint64_t)e->lport << tp->port_shift; 599 600 if (tp->protocol_shift >= 0) 601 ntuple |= (uint64_t)IPPROTO_TCP << tp->protocol_shift; 602 603 if (tp->vnic_shift >= 0) { 604 uint32_t vf = G_FW_VIID_VIN(viid); 605 uint32_t pf = G_FW_VIID_PFN(viid); 606 uint32_t vld = G_FW_VIID_VIVLD(viid); 607 608 ntuple |= (uint64_t)(V_FT_VNID_ID_VF(vf) | V_FT_VNID_ID_PF(pf) | 609 V_FT_VNID_ID_VLD(vld)) << tp->vnic_shift; 610 } 611 612 if (is_t4(sc)) 613 return (htobe32((uint32_t)ntuple)); 614 else 615 return (htobe64(V_FILTER_TUPLE(ntuple))); 616 } 617 618 void 619 set_tcpddp_ulp_mode(struct toepcb *toep) 620 { 621 622 toep->ulp_mode = ULP_MODE_TCPDDP; 623 toep->ddp_flags = DDP_OK; 624 } 625 626 int 627 negative_advice(int status) 628 { 629 630 return (status == CPL_ERR_RTX_NEG_ADVICE || 631 status == CPL_ERR_PERSIST_NEG_ADVICE || 632 status == CPL_ERR_KEEPALV_NEG_ADVICE); 633 } 634 635 static int 636 alloc_tid_tabs(struct tid_info *t) 637 { 638 size_t size; 639 unsigned int i; 640 641 size = t->ntids * sizeof(*t->tid_tab) + 642 t->natids * sizeof(*t->atid_tab) + 643 t->nstids * sizeof(*t->stid_tab); 644 645 t->tid_tab = malloc(size, M_CXGBE, M_ZERO | M_NOWAIT); 646 if (t->tid_tab == NULL) 647 return (ENOMEM); 648 649 mtx_init(&t->atid_lock, "atid lock", NULL, MTX_DEF); 650 t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids]; 651 t->afree = t->atid_tab; 652 t->atids_in_use = 0; 653 for (i = 1; i < t->natids; i++) 654 t->atid_tab[i - 1].next = &t->atid_tab[i]; 655 t->atid_tab[t->natids - 1].next = NULL; 656 657 mtx_init(&t->stid_lock, "stid lock", NULL, MTX_DEF); 658 t->stid_tab = (struct listen_ctx **)&t->atid_tab[t->natids]; 659 t->stids_in_use = 0; 660 TAILQ_INIT(&t->stids); 661 t->nstids_free_head = t->nstids; 662 663 atomic_store_rel_int(&t->tids_in_use, 0); 664 665 return (0); 666 } 667 668 static void 669 free_tid_tabs(struct tid_info *t) 670 { 671 KASSERT(t->tids_in_use == 0, 672 ("%s: %d tids still in use.", __func__, t->tids_in_use)); 673 KASSERT(t->atids_in_use == 0, 674 ("%s: %d atids still in use.", __func__, t->atids_in_use)); 675 KASSERT(t->stids_in_use == 0, 676 ("%s: %d tids still in use.", __func__, t->stids_in_use)); 677 678 free(t->tid_tab, M_CXGBE); 679 t->tid_tab = NULL; 680 681 if (mtx_initialized(&t->atid_lock)) 682 mtx_destroy(&t->atid_lock); 683 if (mtx_initialized(&t->stid_lock)) 684 mtx_destroy(&t->stid_lock); 685 } 686 687 static int 688 add_lip(struct adapter *sc, struct in6_addr *lip) 689 { 690 struct fw_clip_cmd c; 691 692 ASSERT_SYNCHRONIZED_OP(sc); 693 /* mtx_assert(&td->clip_table_lock, MA_OWNED); */ 694 695 memset(&c, 0, sizeof(c)); 696 c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST | 697 F_FW_CMD_WRITE); 698 c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_ALLOC | FW_LEN16(c)); 699 c.ip_hi = *(uint64_t *)&lip->s6_addr[0]; 700 c.ip_lo = *(uint64_t *)&lip->s6_addr[8]; 701 702 return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c)); 703 } 704 705 static int 706 delete_lip(struct adapter *sc, struct in6_addr *lip) 707 { 708 struct fw_clip_cmd c; 709 710 ASSERT_SYNCHRONIZED_OP(sc); 711 /* mtx_assert(&td->clip_table_lock, MA_OWNED); */ 712 713 memset(&c, 0, sizeof(c)); 714 c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST | 715 F_FW_CMD_READ); 716 c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_FREE | FW_LEN16(c)); 717 c.ip_hi = *(uint64_t *)&lip->s6_addr[0]; 718 c.ip_lo = *(uint64_t *)&lip->s6_addr[8]; 719 720 return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c)); 721 } 722 723 static struct clip_entry * 724 search_lip(struct tom_data *td, struct in6_addr *lip) 725 { 726 struct clip_entry *ce; 727 728 mtx_assert(&td->clip_table_lock, MA_OWNED); 729 730 TAILQ_FOREACH(ce, &td->clip_table, link) { 731 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) 732 return (ce); 733 } 734 735 return (NULL); 736 } 737 738 struct clip_entry * 739 hold_lip(struct tom_data *td, struct in6_addr *lip, struct clip_entry *ce) 740 { 741 742 mtx_lock(&td->clip_table_lock); 743 if (ce == NULL) 744 ce = search_lip(td, lip); 745 if (ce != NULL) 746 ce->refcount++; 747 mtx_unlock(&td->clip_table_lock); 748 749 return (ce); 750 } 751 752 void 753 release_lip(struct tom_data *td, struct clip_entry *ce) 754 { 755 756 mtx_lock(&td->clip_table_lock); 757 KASSERT(search_lip(td, &ce->lip) == ce, 758 ("%s: CLIP entry %p p not in CLIP table.", __func__, ce)); 759 KASSERT(ce->refcount > 0, 760 ("%s: CLIP entry %p has refcount 0", __func__, ce)); 761 --ce->refcount; 762 mtx_unlock(&td->clip_table_lock); 763 } 764 765 static void 766 init_clip_table(struct adapter *sc, struct tom_data *td) 767 { 768 769 ASSERT_SYNCHRONIZED_OP(sc); 770 771 mtx_init(&td->clip_table_lock, "CLIP table lock", NULL, MTX_DEF); 772 TAILQ_INIT(&td->clip_table); 773 td->clip_gen = -1; 774 775 update_clip_table(sc, td); 776 } 777 778 static void 779 update_clip(struct adapter *sc, void *arg __unused) 780 { 781 782 if (begin_synchronized_op(sc, NULL, HOLD_LOCK, "t4tomuc")) 783 return; 784 785 if (uld_active(sc, ULD_TOM)) 786 update_clip_table(sc, sc->tom_softc); 787 788 end_synchronized_op(sc, LOCK_HELD); 789 } 790 791 static void 792 t4_clip_task(void *arg, int count) 793 { 794 795 t4_iterate(update_clip, NULL); 796 } 797 798 static void 799 update_clip_table(struct adapter *sc, struct tom_data *td) 800 { 801 struct rm_priotracker in6_ifa_tracker; 802 struct in6_ifaddr *ia; 803 struct in6_addr *lip, tlip; 804 struct clip_head stale; 805 struct clip_entry *ce, *ce_temp; 806 struct vi_info *vi; 807 int rc, gen, i, j; 808 uintptr_t last_vnet; 809 810 ASSERT_SYNCHRONIZED_OP(sc); 811 812 IN6_IFADDR_RLOCK(&in6_ifa_tracker); 813 mtx_lock(&td->clip_table_lock); 814 815 gen = atomic_load_acq_int(&in6_ifaddr_gen); 816 if (gen == td->clip_gen) 817 goto done; 818 819 TAILQ_INIT(&stale); 820 TAILQ_CONCAT(&stale, &td->clip_table, link); 821 822 /* 823 * last_vnet optimizes the common cases where all if_vnet = NULL (no 824 * VIMAGE) or all if_vnet = vnet0. 825 */ 826 last_vnet = (uintptr_t)(-1); 827 for_each_port(sc, i) 828 for_each_vi(sc->port[i], j, vi) { 829 if (last_vnet == (uintptr_t)vi->ifp->if_vnet) 830 continue; 831 832 /* XXX: races with if_vmove */ 833 CURVNET_SET(vi->ifp->if_vnet); 834 TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) { 835 lip = &ia->ia_addr.sin6_addr; 836 837 KASSERT(!IN6_IS_ADDR_MULTICAST(lip), 838 ("%s: mcast address in in6_ifaddr list", __func__)); 839 840 if (IN6_IS_ADDR_LOOPBACK(lip)) 841 continue; 842 if (IN6_IS_SCOPE_EMBED(lip)) { 843 /* Remove the embedded scope */ 844 tlip = *lip; 845 lip = &tlip; 846 in6_clearscope(lip); 847 } 848 /* 849 * XXX: how to weed out the link local address for the 850 * loopback interface? It's fe80::1 usually (always?). 851 */ 852 853 /* 854 * If it's in the main list then we already know it's 855 * not stale. 856 */ 857 TAILQ_FOREACH(ce, &td->clip_table, link) { 858 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) 859 goto next; 860 } 861 862 /* 863 * If it's in the stale list we should move it to the 864 * main list. 865 */ 866 TAILQ_FOREACH(ce, &stale, link) { 867 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) { 868 TAILQ_REMOVE(&stale, ce, link); 869 TAILQ_INSERT_TAIL(&td->clip_table, ce, 870 link); 871 goto next; 872 } 873 } 874 875 /* A new IP6 address; add it to the CLIP table */ 876 ce = malloc(sizeof(*ce), M_CXGBE, M_NOWAIT); 877 memcpy(&ce->lip, lip, sizeof(ce->lip)); 878 ce->refcount = 0; 879 rc = add_lip(sc, lip); 880 if (rc == 0) 881 TAILQ_INSERT_TAIL(&td->clip_table, ce, link); 882 else { 883 char ip[INET6_ADDRSTRLEN]; 884 885 inet_ntop(AF_INET6, &ce->lip, &ip[0], 886 sizeof(ip)); 887 log(LOG_ERR, "%s: could not add %s (%d)\n", 888 __func__, ip, rc); 889 free(ce, M_CXGBE); 890 } 891 next: 892 continue; 893 } 894 CURVNET_RESTORE(); 895 last_vnet = (uintptr_t)vi->ifp->if_vnet; 896 } 897 898 /* 899 * Remove stale addresses (those no longer in V_in6_ifaddrhead) that are 900 * no longer referenced by the driver. 901 */ 902 TAILQ_FOREACH_SAFE(ce, &stale, link, ce_temp) { 903 if (ce->refcount == 0) { 904 rc = delete_lip(sc, &ce->lip); 905 if (rc == 0) { 906 TAILQ_REMOVE(&stale, ce, link); 907 free(ce, M_CXGBE); 908 } else { 909 char ip[INET6_ADDRSTRLEN]; 910 911 inet_ntop(AF_INET6, &ce->lip, &ip[0], 912 sizeof(ip)); 913 log(LOG_ERR, "%s: could not delete %s (%d)\n", 914 __func__, ip, rc); 915 } 916 } 917 } 918 /* The ones that are still referenced need to stay in the CLIP table */ 919 TAILQ_CONCAT(&td->clip_table, &stale, link); 920 921 td->clip_gen = gen; 922 done: 923 mtx_unlock(&td->clip_table_lock); 924 IN6_IFADDR_RUNLOCK(&in6_ifa_tracker); 925 } 926 927 static void 928 destroy_clip_table(struct adapter *sc, struct tom_data *td) 929 { 930 struct clip_entry *ce, *ce_temp; 931 932 if (mtx_initialized(&td->clip_table_lock)) { 933 mtx_lock(&td->clip_table_lock); 934 TAILQ_FOREACH_SAFE(ce, &td->clip_table, link, ce_temp) { 935 KASSERT(ce->refcount == 0, 936 ("%s: CLIP entry %p still in use (%d)", __func__, 937 ce, ce->refcount)); 938 TAILQ_REMOVE(&td->clip_table, ce, link); 939 delete_lip(sc, &ce->lip); 940 free(ce, M_CXGBE); 941 } 942 mtx_unlock(&td->clip_table_lock); 943 mtx_destroy(&td->clip_table_lock); 944 } 945 } 946 947 static void 948 free_tom_data(struct adapter *sc, struct tom_data *td) 949 { 950 951 ASSERT_SYNCHRONIZED_OP(sc); 952 953 KASSERT(TAILQ_EMPTY(&td->toep_list), 954 ("%s: TOE PCB list is not empty.", __func__)); 955 KASSERT(td->lctx_count == 0, 956 ("%s: lctx hash table is not empty.", __func__)); 957 958 t4_free_ppod_region(&td->pr); 959 destroy_clip_table(sc, td); 960 961 if (td->listen_mask != 0) 962 hashdestroy(td->listen_hash, M_CXGBE, td->listen_mask); 963 964 if (mtx_initialized(&td->unsent_wr_lock)) 965 mtx_destroy(&td->unsent_wr_lock); 966 if (mtx_initialized(&td->lctx_hash_lock)) 967 mtx_destroy(&td->lctx_hash_lock); 968 if (mtx_initialized(&td->toep_list_lock)) 969 mtx_destroy(&td->toep_list_lock); 970 971 free_tid_tabs(&sc->tids); 972 free(td, M_CXGBE); 973 } 974 975 static void 976 reclaim_wr_resources(void *arg, int count) 977 { 978 struct tom_data *td = arg; 979 STAILQ_HEAD(, wrqe) twr_list = STAILQ_HEAD_INITIALIZER(twr_list); 980 struct cpl_act_open_req *cpl; 981 u_int opcode, atid; 982 struct wrqe *wr; 983 struct adapter *sc; 984 985 mtx_lock(&td->unsent_wr_lock); 986 STAILQ_SWAP(&td->unsent_wr_list, &twr_list, wrqe); 987 mtx_unlock(&td->unsent_wr_lock); 988 989 while ((wr = STAILQ_FIRST(&twr_list)) != NULL) { 990 STAILQ_REMOVE_HEAD(&twr_list, link); 991 992 cpl = wrtod(wr); 993 opcode = GET_OPCODE(cpl); 994 995 switch (opcode) { 996 case CPL_ACT_OPEN_REQ: 997 case CPL_ACT_OPEN_REQ6: 998 atid = G_TID_TID(be32toh(OPCODE_TID(cpl))); 999 sc = td_adapter(td); 1000 1001 CTR2(KTR_CXGBE, "%s: atid %u ", __func__, atid); 1002 act_open_failure_cleanup(sc, atid, EHOSTUNREACH); 1003 free(wr, M_CXGBE); 1004 break; 1005 default: 1006 log(LOG_ERR, "%s: leaked work request %p, wr_len %d, " 1007 "opcode %x\n", __func__, wr, wr->wr_len, opcode); 1008 /* WR not freed here; go look at it with a debugger. */ 1009 } 1010 } 1011 } 1012 1013 /* 1014 * Ground control to Major TOM 1015 * Commencing countdown, engines on 1016 */ 1017 static int 1018 t4_tom_activate(struct adapter *sc) 1019 { 1020 struct tom_data *td; 1021 struct toedev *tod; 1022 struct vi_info *vi; 1023 struct sge_ofld_rxq *ofld_rxq; 1024 int i, j, rc, v; 1025 1026 ASSERT_SYNCHRONIZED_OP(sc); 1027 1028 /* per-adapter softc for TOM */ 1029 td = malloc(sizeof(*td), M_CXGBE, M_ZERO | M_NOWAIT); 1030 if (td == NULL) 1031 return (ENOMEM); 1032 1033 /* List of TOE PCBs and associated lock */ 1034 mtx_init(&td->toep_list_lock, "PCB list lock", NULL, MTX_DEF); 1035 TAILQ_INIT(&td->toep_list); 1036 1037 /* Listen context */ 1038 mtx_init(&td->lctx_hash_lock, "lctx hash lock", NULL, MTX_DEF); 1039 td->listen_hash = hashinit_flags(LISTEN_HASH_SIZE, M_CXGBE, 1040 &td->listen_mask, HASH_NOWAIT); 1041 1042 /* List of WRs for which L2 resolution failed */ 1043 mtx_init(&td->unsent_wr_lock, "Unsent WR list lock", NULL, MTX_DEF); 1044 STAILQ_INIT(&td->unsent_wr_list); 1045 TASK_INIT(&td->reclaim_wr_resources, 0, reclaim_wr_resources, td); 1046 1047 /* TID tables */ 1048 rc = alloc_tid_tabs(&sc->tids); 1049 if (rc != 0) 1050 goto done; 1051 1052 rc = t4_init_ppod_region(&td->pr, &sc->vres.ddp, 1053 t4_read_reg(sc, A_ULP_RX_TDDP_PSZ), "TDDP page pods"); 1054 if (rc != 0) 1055 goto done; 1056 t4_set_reg_field(sc, A_ULP_RX_TDDP_TAGMASK, 1057 V_TDDPTAGMASK(M_TDDPTAGMASK), td->pr.pr_tag_mask); 1058 1059 /* CLIP table for IPv6 offload */ 1060 init_clip_table(sc, td); 1061 1062 /* toedev ops */ 1063 tod = &td->tod; 1064 init_toedev(tod); 1065 tod->tod_softc = sc; 1066 tod->tod_connect = t4_connect; 1067 tod->tod_listen_start = t4_listen_start; 1068 tod->tod_listen_stop = t4_listen_stop; 1069 tod->tod_rcvd = t4_rcvd; 1070 tod->tod_output = t4_tod_output; 1071 tod->tod_send_rst = t4_send_rst; 1072 tod->tod_send_fin = t4_send_fin; 1073 tod->tod_pcb_detach = t4_pcb_detach; 1074 tod->tod_l2_update = t4_l2_update; 1075 tod->tod_syncache_added = t4_syncache_added; 1076 tod->tod_syncache_removed = t4_syncache_removed; 1077 tod->tod_syncache_respond = t4_syncache_respond; 1078 tod->tod_offload_socket = t4_offload_socket; 1079 tod->tod_ctloutput = t4_ctloutput; 1080 1081 for_each_port(sc, i) { 1082 for_each_vi(sc->port[i], v, vi) { 1083 TOEDEV(vi->ifp) = &td->tod; 1084 for_each_ofld_rxq(vi, j, ofld_rxq) { 1085 ofld_rxq->iq.set_tcb_rpl = do_set_tcb_rpl; 1086 ofld_rxq->iq.l2t_write_rpl = do_l2t_write_rpl2; 1087 } 1088 } 1089 } 1090 1091 sc->tom_softc = td; 1092 register_toedev(sc->tom_softc); 1093 1094 done: 1095 if (rc != 0) 1096 free_tom_data(sc, td); 1097 return (rc); 1098 } 1099 1100 static int 1101 t4_tom_deactivate(struct adapter *sc) 1102 { 1103 int rc = 0; 1104 struct tom_data *td = sc->tom_softc; 1105 1106 ASSERT_SYNCHRONIZED_OP(sc); 1107 1108 if (td == NULL) 1109 return (0); /* XXX. KASSERT? */ 1110 1111 if (sc->offload_map != 0) 1112 return (EBUSY); /* at least one port has IFCAP_TOE enabled */ 1113 1114 if (uld_active(sc, ULD_IWARP) || uld_active(sc, ULD_ISCSI)) 1115 return (EBUSY); /* both iWARP and iSCSI rely on the TOE. */ 1116 1117 mtx_lock(&td->toep_list_lock); 1118 if (!TAILQ_EMPTY(&td->toep_list)) 1119 rc = EBUSY; 1120 mtx_unlock(&td->toep_list_lock); 1121 1122 mtx_lock(&td->lctx_hash_lock); 1123 if (td->lctx_count > 0) 1124 rc = EBUSY; 1125 mtx_unlock(&td->lctx_hash_lock); 1126 1127 taskqueue_drain(taskqueue_thread, &td->reclaim_wr_resources); 1128 mtx_lock(&td->unsent_wr_lock); 1129 if (!STAILQ_EMPTY(&td->unsent_wr_list)) 1130 rc = EBUSY; 1131 mtx_unlock(&td->unsent_wr_lock); 1132 1133 if (rc == 0) { 1134 unregister_toedev(sc->tom_softc); 1135 free_tom_data(sc, td); 1136 sc->tom_softc = NULL; 1137 } 1138 1139 return (rc); 1140 } 1141 1142 static void 1143 t4_tom_ifaddr_event(void *arg __unused, struct ifnet *ifp) 1144 { 1145 1146 atomic_add_rel_int(&in6_ifaddr_gen, 1); 1147 taskqueue_enqueue_timeout(taskqueue_thread, &clip_task, -hz / 4); 1148 } 1149 1150 static int 1151 t4_aio_queue_tom(struct socket *so, struct kaiocb *job) 1152 { 1153 struct tcpcb *tp = so_sototcpcb(so); 1154 struct toepcb *toep = tp->t_toe; 1155 int error; 1156 1157 if (toep->ulp_mode == ULP_MODE_TCPDDP) { 1158 error = t4_aio_queue_ddp(so, job); 1159 if (error != EOPNOTSUPP) 1160 return (error); 1161 } 1162 1163 return (t4_aio_queue_aiotx(so, job)); 1164 } 1165 1166 static int 1167 t4_tom_mod_load(void) 1168 { 1169 int rc; 1170 struct protosw *tcp_protosw, *tcp6_protosw; 1171 1172 /* CPL handlers */ 1173 t4_init_connect_cpl_handlers(); 1174 t4_init_listen_cpl_handlers(); 1175 t4_init_cpl_io_handlers(); 1176 1177 rc = t4_ddp_mod_load(); 1178 if (rc != 0) 1179 return (rc); 1180 1181 tcp_protosw = pffindproto(PF_INET, IPPROTO_TCP, SOCK_STREAM); 1182 if (tcp_protosw == NULL) 1183 return (ENOPROTOOPT); 1184 bcopy(tcp_protosw, &toe_protosw, sizeof(toe_protosw)); 1185 bcopy(tcp_protosw->pr_usrreqs, &toe_usrreqs, sizeof(toe_usrreqs)); 1186 toe_usrreqs.pru_aio_queue = t4_aio_queue_tom; 1187 toe_protosw.pr_usrreqs = &toe_usrreqs; 1188 1189 tcp6_protosw = pffindproto(PF_INET6, IPPROTO_TCP, SOCK_STREAM); 1190 if (tcp6_protosw == NULL) 1191 return (ENOPROTOOPT); 1192 bcopy(tcp6_protosw, &toe6_protosw, sizeof(toe6_protosw)); 1193 bcopy(tcp6_protosw->pr_usrreqs, &toe6_usrreqs, sizeof(toe6_usrreqs)); 1194 toe6_usrreqs.pru_aio_queue = t4_aio_queue_tom; 1195 toe6_protosw.pr_usrreqs = &toe6_usrreqs; 1196 1197 TIMEOUT_TASK_INIT(taskqueue_thread, &clip_task, 0, t4_clip_task, NULL); 1198 ifaddr_evhandler = EVENTHANDLER_REGISTER(ifaddr_event, 1199 t4_tom_ifaddr_event, NULL, EVENTHANDLER_PRI_ANY); 1200 1201 rc = t4_register_uld(&tom_uld_info); 1202 if (rc != 0) 1203 t4_tom_mod_unload(); 1204 1205 return (rc); 1206 } 1207 1208 static void 1209 tom_uninit(struct adapter *sc, void *arg __unused) 1210 { 1211 if (begin_synchronized_op(sc, NULL, SLEEP_OK | INTR_OK, "t4tomun")) 1212 return; 1213 1214 /* Try to free resources (works only if no port has IFCAP_TOE) */ 1215 if (uld_active(sc, ULD_TOM)) 1216 t4_deactivate_uld(sc, ULD_TOM); 1217 1218 end_synchronized_op(sc, 0); 1219 } 1220 1221 static int 1222 t4_tom_mod_unload(void) 1223 { 1224 t4_iterate(tom_uninit, NULL); 1225 1226 if (t4_unregister_uld(&tom_uld_info) == EBUSY) 1227 return (EBUSY); 1228 1229 if (ifaddr_evhandler) { 1230 EVENTHANDLER_DEREGISTER(ifaddr_event, ifaddr_evhandler); 1231 taskqueue_cancel_timeout(taskqueue_thread, &clip_task, NULL); 1232 } 1233 1234 t4_ddp_mod_unload(); 1235 1236 t4_uninit_connect_cpl_handlers(); 1237 t4_uninit_listen_cpl_handlers(); 1238 t4_uninit_cpl_io_handlers(); 1239 1240 return (0); 1241 } 1242 #endif /* TCP_OFFLOAD */ 1243 1244 static int 1245 t4_tom_modevent(module_t mod, int cmd, void *arg) 1246 { 1247 int rc = 0; 1248 1249 #ifdef TCP_OFFLOAD 1250 switch (cmd) { 1251 case MOD_LOAD: 1252 rc = t4_tom_mod_load(); 1253 break; 1254 1255 case MOD_UNLOAD: 1256 rc = t4_tom_mod_unload(); 1257 break; 1258 1259 default: 1260 rc = EINVAL; 1261 } 1262 #else 1263 printf("t4_tom: compiled without TCP_OFFLOAD support.\n"); 1264 rc = EOPNOTSUPP; 1265 #endif 1266 return (rc); 1267 } 1268 1269 static moduledata_t t4_tom_moddata= { 1270 "t4_tom", 1271 t4_tom_modevent, 1272 0 1273 }; 1274 1275 MODULE_VERSION(t4_tom, 1); 1276 MODULE_DEPEND(t4_tom, toecore, 1, 1, 1); 1277 MODULE_DEPEND(t4_tom, t4nex, 1, 1, 1); 1278 DECLARE_MODULE(t4_tom, t4_tom_moddata, SI_SUB_EXEC, SI_ORDER_ANY); 1279