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 <net/if_types.h> 55 #include <net/if_vlan_var.h> 56 #include <netinet/in.h> 57 #include <netinet/in_pcb.h> 58 #include <netinet/in_var.h> 59 #include <netinet/ip.h> 60 #include <netinet/ip6.h> 61 #include <netinet6/scope6_var.h> 62 #define TCPSTATES 63 #include <netinet/tcp_fsm.h> 64 #include <netinet/tcp_timer.h> 65 #include <netinet/tcp_var.h> 66 #include <netinet/toecore.h> 67 68 #ifdef TCP_OFFLOAD 69 #include "common/common.h" 70 #include "common/t4_msg.h" 71 #include "common/t4_regs.h" 72 #include "common/t4_regs_values.h" 73 #include "common/t4_tcb.h" 74 #include "t4_clip.h" 75 #include "tom/t4_tom_l2t.h" 76 #include "tom/t4_tom.h" 77 #include "tom/t4_tls.h" 78 79 static struct protosw toe_protosw; 80 static struct pr_usrreqs toe_usrreqs; 81 82 static struct protosw toe6_protosw; 83 static struct pr_usrreqs toe6_usrreqs; 84 85 /* Module ops */ 86 static int t4_tom_mod_load(void); 87 static int t4_tom_mod_unload(void); 88 static int t4_tom_modevent(module_t, int, void *); 89 90 /* ULD ops and helpers */ 91 static int t4_tom_activate(struct adapter *); 92 static int t4_tom_deactivate(struct adapter *); 93 94 static struct uld_info tom_uld_info = { 95 .uld_id = ULD_TOM, 96 .activate = t4_tom_activate, 97 .deactivate = t4_tom_deactivate, 98 }; 99 100 static void release_offload_resources(struct toepcb *); 101 static int alloc_tid_tabs(struct tid_info *); 102 static void free_tid_tabs(struct tid_info *); 103 static void free_tom_data(struct adapter *, struct tom_data *); 104 static void reclaim_wr_resources(void *, int); 105 106 struct toepcb * 107 alloc_toepcb(struct vi_info *vi, int txqid, int rxqid, int flags) 108 { 109 struct port_info *pi = vi->pi; 110 struct adapter *sc = pi->adapter; 111 struct toepcb *toep; 112 int tx_credits, txsd_total, len; 113 114 /* 115 * The firmware counts tx work request credits in units of 16 bytes 116 * each. Reserve room for an ABORT_REQ so the driver never has to worry 117 * about tx credits if it wants to abort a connection. 118 */ 119 tx_credits = sc->params.ofldq_wr_cred; 120 tx_credits -= howmany(sizeof(struct cpl_abort_req), 16); 121 122 /* 123 * Shortest possible tx work request is a fw_ofld_tx_data_wr + 1 byte 124 * immediate payload, and firmware counts tx work request credits in 125 * units of 16 byte. Calculate the maximum work requests possible. 126 */ 127 txsd_total = tx_credits / 128 howmany(sizeof(struct fw_ofld_tx_data_wr) + 1, 16); 129 130 KASSERT(txqid >= vi->first_ofld_txq && 131 txqid < vi->first_ofld_txq + vi->nofldtxq, 132 ("%s: txqid %d for vi %p (first %d, n %d)", __func__, txqid, vi, 133 vi->first_ofld_txq, vi->nofldtxq)); 134 135 KASSERT(rxqid >= vi->first_ofld_rxq && 136 rxqid < vi->first_ofld_rxq + vi->nofldrxq, 137 ("%s: rxqid %d for vi %p (first %d, n %d)", __func__, rxqid, vi, 138 vi->first_ofld_rxq, vi->nofldrxq)); 139 140 len = offsetof(struct toepcb, txsd) + 141 txsd_total * sizeof(struct ofld_tx_sdesc); 142 143 toep = malloc(len, M_CXGBE, M_ZERO | flags); 144 if (toep == NULL) 145 return (NULL); 146 147 refcount_init(&toep->refcount, 1); 148 toep->td = sc->tom_softc; 149 toep->vi = vi; 150 toep->tc_idx = -1; 151 toep->tx_total = tx_credits; 152 toep->tx_credits = tx_credits; 153 toep->ofld_txq = &sc->sge.ofld_txq[txqid]; 154 toep->ofld_rxq = &sc->sge.ofld_rxq[rxqid]; 155 toep->ctrlq = &sc->sge.ctrlq[pi->port_id]; 156 mbufq_init(&toep->ulp_pduq, INT_MAX); 157 mbufq_init(&toep->ulp_pdu_reclaimq, INT_MAX); 158 toep->txsd_total = txsd_total; 159 toep->txsd_avail = txsd_total; 160 toep->txsd_pidx = 0; 161 toep->txsd_cidx = 0; 162 aiotx_init_toep(toep); 163 164 return (toep); 165 } 166 167 struct toepcb * 168 hold_toepcb(struct toepcb *toep) 169 { 170 171 refcount_acquire(&toep->refcount); 172 return (toep); 173 } 174 175 void 176 free_toepcb(struct toepcb *toep) 177 { 178 179 if (refcount_release(&toep->refcount) == 0) 180 return; 181 182 KASSERT(!(toep->flags & TPF_ATTACHED), 183 ("%s: attached to an inpcb", __func__)); 184 KASSERT(!(toep->flags & TPF_CPL_PENDING), 185 ("%s: CPL pending", __func__)); 186 187 if (toep->ulp_mode == ULP_MODE_TCPDDP) 188 ddp_uninit_toep(toep); 189 tls_uninit_toep(toep); 190 free(toep, M_CXGBE); 191 } 192 193 /* 194 * Set up the socket for TCP offload. 195 */ 196 void 197 offload_socket(struct socket *so, struct toepcb *toep) 198 { 199 struct tom_data *td = toep->td; 200 struct inpcb *inp = sotoinpcb(so); 201 struct tcpcb *tp = intotcpcb(inp); 202 struct sockbuf *sb; 203 204 INP_WLOCK_ASSERT(inp); 205 206 /* Update socket */ 207 sb = &so->so_snd; 208 SOCKBUF_LOCK(sb); 209 sb->sb_flags |= SB_NOCOALESCE; 210 SOCKBUF_UNLOCK(sb); 211 sb = &so->so_rcv; 212 SOCKBUF_LOCK(sb); 213 sb->sb_flags |= SB_NOCOALESCE; 214 if (inp->inp_vflag & INP_IPV6) 215 so->so_proto = &toe6_protosw; 216 else 217 so->so_proto = &toe_protosw; 218 SOCKBUF_UNLOCK(sb); 219 220 /* Update TCP PCB */ 221 tp->tod = &td->tod; 222 tp->t_toe = toep; 223 tp->t_flags |= TF_TOE; 224 225 /* Install an extra hold on inp */ 226 toep->inp = inp; 227 toep->flags |= TPF_ATTACHED; 228 in_pcbref(inp); 229 230 /* Add the TOE PCB to the active list */ 231 mtx_lock(&td->toep_list_lock); 232 TAILQ_INSERT_HEAD(&td->toep_list, toep, link); 233 mtx_unlock(&td->toep_list_lock); 234 } 235 236 /* This is _not_ the normal way to "unoffload" a socket. */ 237 void 238 undo_offload_socket(struct socket *so) 239 { 240 struct inpcb *inp = sotoinpcb(so); 241 struct tcpcb *tp = intotcpcb(inp); 242 struct toepcb *toep = tp->t_toe; 243 struct tom_data *td = toep->td; 244 struct sockbuf *sb; 245 246 INP_WLOCK_ASSERT(inp); 247 248 sb = &so->so_snd; 249 SOCKBUF_LOCK(sb); 250 sb->sb_flags &= ~SB_NOCOALESCE; 251 SOCKBUF_UNLOCK(sb); 252 sb = &so->so_rcv; 253 SOCKBUF_LOCK(sb); 254 sb->sb_flags &= ~SB_NOCOALESCE; 255 SOCKBUF_UNLOCK(sb); 256 257 tp->tod = NULL; 258 tp->t_toe = NULL; 259 tp->t_flags &= ~TF_TOE; 260 261 toep->inp = NULL; 262 toep->flags &= ~TPF_ATTACHED; 263 if (in_pcbrele_wlocked(inp)) 264 panic("%s: inp freed.", __func__); 265 266 mtx_lock(&td->toep_list_lock); 267 TAILQ_REMOVE(&td->toep_list, toep, link); 268 mtx_unlock(&td->toep_list_lock); 269 } 270 271 static void 272 release_offload_resources(struct toepcb *toep) 273 { 274 struct tom_data *td = toep->td; 275 struct adapter *sc = td_adapter(td); 276 int tid = toep->tid; 277 278 KASSERT(!(toep->flags & TPF_CPL_PENDING), 279 ("%s: %p has CPL pending.", __func__, toep)); 280 KASSERT(!(toep->flags & TPF_ATTACHED), 281 ("%s: %p is still attached.", __func__, toep)); 282 283 CTR5(KTR_CXGBE, "%s: toep %p (tid %d, l2te %p, ce %p)", 284 __func__, toep, tid, toep->l2te, toep->ce); 285 286 /* 287 * These queues should have been emptied at approximately the same time 288 * that a normal connection's socket's so_snd would have been purged or 289 * drained. Do _not_ clean up here. 290 */ 291 MPASS(mbufq_len(&toep->ulp_pduq) == 0); 292 MPASS(mbufq_len(&toep->ulp_pdu_reclaimq) == 0); 293 #ifdef INVARIANTS 294 if (toep->ulp_mode == ULP_MODE_TCPDDP) 295 ddp_assert_empty(toep); 296 #endif 297 298 if (toep->l2te) 299 t4_l2t_release(toep->l2te); 300 301 if (tid >= 0) { 302 remove_tid(sc, tid, toep->ce ? 2 : 1); 303 release_tid(sc, tid, toep->ctrlq); 304 } 305 306 if (toep->ce) 307 t4_release_lip(sc, toep->ce); 308 309 if (toep->tc_idx != -1) 310 t4_release_cl_rl(sc, toep->vi->pi->port_id, toep->tc_idx); 311 312 mtx_lock(&td->toep_list_lock); 313 TAILQ_REMOVE(&td->toep_list, toep, link); 314 mtx_unlock(&td->toep_list_lock); 315 316 free_toepcb(toep); 317 } 318 319 /* 320 * The kernel is done with the TCP PCB and this is our opportunity to unhook the 321 * toepcb hanging off of it. If the TOE driver is also done with the toepcb (no 322 * pending CPL) then it is time to release all resources tied to the toepcb. 323 * 324 * Also gets called when an offloaded active open fails and the TOM wants the 325 * kernel to take the TCP PCB back. 326 */ 327 static void 328 t4_pcb_detach(struct toedev *tod __unused, struct tcpcb *tp) 329 { 330 #if defined(KTR) || defined(INVARIANTS) 331 struct inpcb *inp = tp->t_inpcb; 332 #endif 333 struct toepcb *toep = tp->t_toe; 334 335 INP_WLOCK_ASSERT(inp); 336 337 KASSERT(toep != NULL, ("%s: toep is NULL", __func__)); 338 KASSERT(toep->flags & TPF_ATTACHED, 339 ("%s: not attached", __func__)); 340 341 #ifdef KTR 342 if (tp->t_state == TCPS_SYN_SENT) { 343 CTR6(KTR_CXGBE, "%s: atid %d, toep %p (0x%x), inp %p (0x%x)", 344 __func__, toep->tid, toep, toep->flags, inp, 345 inp->inp_flags); 346 } else { 347 CTR6(KTR_CXGBE, 348 "t4_pcb_detach: tid %d (%s), toep %p (0x%x), inp %p (0x%x)", 349 toep->tid, tcpstates[tp->t_state], toep, toep->flags, inp, 350 inp->inp_flags); 351 } 352 #endif 353 354 tp->t_toe = NULL; 355 tp->t_flags &= ~TF_TOE; 356 toep->flags &= ~TPF_ATTACHED; 357 358 if (!(toep->flags & TPF_CPL_PENDING)) 359 release_offload_resources(toep); 360 } 361 362 /* 363 * setsockopt handler. 364 */ 365 static void 366 t4_ctloutput(struct toedev *tod, struct tcpcb *tp, int dir, int name) 367 { 368 struct adapter *sc = tod->tod_softc; 369 struct toepcb *toep = tp->t_toe; 370 371 if (dir == SOPT_GET) 372 return; 373 374 CTR4(KTR_CXGBE, "%s: tp %p, dir %u, name %u", __func__, tp, dir, name); 375 376 switch (name) { 377 case TCP_NODELAY: 378 if (tp->t_state != TCPS_ESTABLISHED) 379 break; 380 t4_set_tcb_field(sc, toep->ctrlq, toep, W_TCB_T_FLAGS, 381 V_TF_NAGLE(1), V_TF_NAGLE(tp->t_flags & TF_NODELAY ? 0 : 1), 382 0, 0); 383 break; 384 default: 385 break; 386 } 387 } 388 389 static inline int 390 get_tcb_bit(u_char *tcb, int bit) 391 { 392 int ix, shift; 393 394 ix = 127 - (bit >> 3); 395 shift = bit & 0x7; 396 397 return ((tcb[ix] >> shift) & 1); 398 } 399 400 static inline uint64_t 401 get_tcb_bits(u_char *tcb, int hi, int lo) 402 { 403 uint64_t rc = 0; 404 405 while (hi >= lo) { 406 rc = (rc << 1) | get_tcb_bit(tcb, hi); 407 --hi; 408 } 409 410 return (rc); 411 } 412 413 /* 414 * Called by the kernel to allow the TOE driver to "refine" values filled up in 415 * the tcp_info for an offloaded connection. 416 */ 417 static void 418 t4_tcp_info(struct toedev *tod, struct tcpcb *tp, struct tcp_info *ti) 419 { 420 int i, j, k, rc; 421 struct adapter *sc = tod->tod_softc; 422 struct toepcb *toep = tp->t_toe; 423 uint32_t addr, v; 424 uint32_t buf[TCB_SIZE / sizeof(uint32_t)]; 425 u_char *tcb, tmp; 426 427 INP_WLOCK_ASSERT(tp->t_inpcb); 428 MPASS(ti != NULL); 429 430 ti->tcpi_toe_tid = toep->tid; 431 432 addr = t4_read_reg(sc, A_TP_CMM_TCB_BASE) + toep->tid * TCB_SIZE; 433 rc = read_via_memwin(sc, 2, addr, &buf[0], TCB_SIZE); 434 if (rc != 0) 435 return; 436 437 tcb = (u_char *)&buf[0]; 438 for (i = 0, j = TCB_SIZE - 16; i < j; i += 16, j -= 16) { 439 for (k = 0; k < 16; k++) { 440 tmp = tcb[i + k]; 441 tcb[i + k] = tcb[j + k]; 442 tcb[j + k] = tmp; 443 } 444 } 445 446 ti->tcpi_state = get_tcb_bits(tcb, 115, 112); 447 448 v = get_tcb_bits(tcb, 271, 256); 449 ti->tcpi_rtt = tcp_ticks_to_us(sc, v); 450 451 v = get_tcb_bits(tcb, 287, 272); 452 ti->tcpi_rttvar = tcp_ticks_to_us(sc, v); 453 454 ti->tcpi_snd_ssthresh = get_tcb_bits(tcb, 487, 460); 455 ti->tcpi_snd_cwnd = get_tcb_bits(tcb, 459, 432); 456 ti->tcpi_rcv_nxt = get_tcb_bits(tcb, 553, 522); 457 458 ti->tcpi_snd_nxt = get_tcb_bits(tcb, 319, 288) - 459 get_tcb_bits(tcb, 375, 348); 460 461 /* Receive window being advertised by us. */ 462 ti->tcpi_rcv_space = get_tcb_bits(tcb, 581, 554); 463 464 /* Send window ceiling. */ 465 v = get_tcb_bits(tcb, 159, 144) << get_tcb_bits(tcb, 131, 128); 466 ti->tcpi_snd_wnd = min(v, ti->tcpi_snd_cwnd); 467 } 468 469 /* 470 * The TOE driver will not receive any more CPLs for the tid associated with the 471 * toepcb; release the hold on the inpcb. 472 */ 473 void 474 final_cpl_received(struct toepcb *toep) 475 { 476 struct inpcb *inp = toep->inp; 477 478 KASSERT(inp != NULL, ("%s: inp is NULL", __func__)); 479 INP_WLOCK_ASSERT(inp); 480 KASSERT(toep->flags & TPF_CPL_PENDING, 481 ("%s: CPL not pending already?", __func__)); 482 483 CTR6(KTR_CXGBE, "%s: tid %d, toep %p (0x%x), inp %p (0x%x)", 484 __func__, toep->tid, toep, toep->flags, inp, inp->inp_flags); 485 486 if (toep->ulp_mode == ULP_MODE_TCPDDP) 487 release_ddp_resources(toep); 488 toep->inp = NULL; 489 toep->flags &= ~TPF_CPL_PENDING; 490 mbufq_drain(&toep->ulp_pdu_reclaimq); 491 492 if (!(toep->flags & TPF_ATTACHED)) 493 release_offload_resources(toep); 494 495 if (!in_pcbrele_wlocked(inp)) 496 INP_WUNLOCK(inp); 497 } 498 499 void 500 insert_tid(struct adapter *sc, int tid, void *ctx, int ntids) 501 { 502 struct tid_info *t = &sc->tids; 503 504 MPASS(tid >= t->tid_base); 505 MPASS(tid - t->tid_base < t->ntids); 506 507 t->tid_tab[tid - t->tid_base] = ctx; 508 atomic_add_int(&t->tids_in_use, ntids); 509 } 510 511 void * 512 lookup_tid(struct adapter *sc, int tid) 513 { 514 struct tid_info *t = &sc->tids; 515 516 return (t->tid_tab[tid - t->tid_base]); 517 } 518 519 void 520 update_tid(struct adapter *sc, int tid, void *ctx) 521 { 522 struct tid_info *t = &sc->tids; 523 524 t->tid_tab[tid - t->tid_base] = ctx; 525 } 526 527 void 528 remove_tid(struct adapter *sc, int tid, int ntids) 529 { 530 struct tid_info *t = &sc->tids; 531 532 t->tid_tab[tid - t->tid_base] = NULL; 533 atomic_subtract_int(&t->tids_in_use, ntids); 534 } 535 536 /* 537 * What mtu_idx to use, given a 4-tuple. Note that both s->mss and tcp_mssopt 538 * have the MSS that we should advertise in our SYN. Advertised MSS doesn't 539 * account for any TCP options so the effective MSS (only payload, no headers or 540 * options) could be different. We fill up tp->t_maxseg with the effective MSS 541 * at the end of the 3-way handshake. 542 */ 543 int 544 find_best_mtu_idx(struct adapter *sc, struct in_conninfo *inc, 545 struct offload_settings *s) 546 { 547 unsigned short *mtus = &sc->params.mtus[0]; 548 int i, mss, mtu; 549 550 MPASS(inc != NULL); 551 552 mss = s->mss > 0 ? s->mss : tcp_mssopt(inc); 553 if (inc->inc_flags & INC_ISIPV6) 554 mtu = mss + sizeof(struct ip6_hdr) + sizeof(struct tcphdr); 555 else 556 mtu = mss + sizeof(struct ip) + sizeof(struct tcphdr); 557 558 for (i = 0; i < NMTUS - 1 && mtus[i + 1] <= mtu; i++) 559 continue; 560 561 return (i); 562 } 563 564 /* 565 * Determine the receive window size for a socket. 566 */ 567 u_long 568 select_rcv_wnd(struct socket *so) 569 { 570 unsigned long wnd; 571 572 SOCKBUF_LOCK_ASSERT(&so->so_rcv); 573 574 wnd = sbspace(&so->so_rcv); 575 if (wnd < MIN_RCV_WND) 576 wnd = MIN_RCV_WND; 577 578 return min(wnd, MAX_RCV_WND); 579 } 580 581 int 582 select_rcv_wscale(void) 583 { 584 int wscale = 0; 585 unsigned long space = sb_max; 586 587 if (space > MAX_RCV_WND) 588 space = MAX_RCV_WND; 589 590 while (wscale < TCP_MAX_WINSHIFT && (TCP_MAXWIN << wscale) < space) 591 wscale++; 592 593 return (wscale); 594 } 595 596 /* 597 * socket so could be a listening socket too. 598 */ 599 uint64_t 600 calc_opt0(struct socket *so, struct vi_info *vi, struct l2t_entry *e, 601 int mtu_idx, int rscale, int rx_credits, int ulp_mode, 602 struct offload_settings *s) 603 { 604 int keepalive; 605 uint64_t opt0; 606 607 MPASS(so != NULL); 608 MPASS(vi != NULL); 609 KASSERT(rx_credits <= M_RCV_BUFSIZ, 610 ("%s: rcv_bufsiz too high", __func__)); 611 612 opt0 = F_TCAM_BYPASS | V_WND_SCALE(rscale) | V_MSS_IDX(mtu_idx) | 613 V_ULP_MODE(ulp_mode) | V_RCV_BUFSIZ(rx_credits) | 614 V_L2T_IDX(e->idx) | V_SMAC_SEL(vi->smt_idx) | 615 V_TX_CHAN(vi->pi->tx_chan); 616 617 keepalive = tcp_always_keepalive || so_options_get(so) & SO_KEEPALIVE; 618 opt0 |= V_KEEP_ALIVE(keepalive != 0); 619 620 if (s->nagle < 0) { 621 struct inpcb *inp = sotoinpcb(so); 622 struct tcpcb *tp = intotcpcb(inp); 623 624 opt0 |= V_NAGLE((tp->t_flags & TF_NODELAY) == 0); 625 } else 626 opt0 |= V_NAGLE(s->nagle != 0); 627 628 return htobe64(opt0); 629 } 630 631 uint64_t 632 select_ntuple(struct vi_info *vi, struct l2t_entry *e) 633 { 634 struct adapter *sc = vi->pi->adapter; 635 struct tp_params *tp = &sc->params.tp; 636 uint16_t viid = vi->viid; 637 uint64_t ntuple = 0; 638 639 /* 640 * Initialize each of the fields which we care about which are present 641 * in the Compressed Filter Tuple. 642 */ 643 if (tp->vlan_shift >= 0 && EVL_VLANOFTAG(e->vlan) != CPL_L2T_VLAN_NONE) 644 ntuple |= (uint64_t)(F_FT_VLAN_VLD | e->vlan) << tp->vlan_shift; 645 646 if (tp->port_shift >= 0) 647 ntuple |= (uint64_t)e->lport << tp->port_shift; 648 649 if (tp->protocol_shift >= 0) 650 ntuple |= (uint64_t)IPPROTO_TCP << tp->protocol_shift; 651 652 if (tp->vnic_shift >= 0 && tp->ingress_config & F_VNIC) { 653 uint32_t vf = G_FW_VIID_VIN(viid); 654 uint32_t pf = G_FW_VIID_PFN(viid); 655 uint32_t vld = G_FW_VIID_VIVLD(viid); 656 657 ntuple |= (uint64_t)(V_FT_VNID_ID_VF(vf) | V_FT_VNID_ID_PF(pf) | 658 V_FT_VNID_ID_VLD(vld)) << tp->vnic_shift; 659 } 660 661 if (is_t4(sc)) 662 return (htobe32((uint32_t)ntuple)); 663 else 664 return (htobe64(V_FILTER_TUPLE(ntuple))); 665 } 666 667 static int 668 is_tls_sock(struct socket *so, struct adapter *sc) 669 { 670 struct inpcb *inp = sotoinpcb(so); 671 int i, rc; 672 673 /* XXX: Eventually add a SO_WANT_TLS socket option perhaps? */ 674 rc = 0; 675 ADAPTER_LOCK(sc); 676 for (i = 0; i < sc->tt.num_tls_rx_ports; i++) { 677 if (inp->inp_lport == htons(sc->tt.tls_rx_ports[i]) || 678 inp->inp_fport == htons(sc->tt.tls_rx_ports[i])) { 679 rc = 1; 680 break; 681 } 682 } 683 ADAPTER_UNLOCK(sc); 684 return (rc); 685 } 686 687 int 688 select_ulp_mode(struct socket *so, struct adapter *sc, 689 struct offload_settings *s) 690 { 691 692 if (can_tls_offload(sc) && 693 (s->tls > 0 || (s->tls < 0 && is_tls_sock(so, sc)))) 694 return (ULP_MODE_TLS); 695 else if (s->ddp > 0 || 696 (s->ddp < 0 && sc->tt.ddp && (so->so_options & SO_NO_DDP) == 0)) 697 return (ULP_MODE_TCPDDP); 698 else 699 return (ULP_MODE_NONE); 700 } 701 702 void 703 set_ulp_mode(struct toepcb *toep, int ulp_mode) 704 { 705 706 CTR4(KTR_CXGBE, "%s: toep %p (tid %d) ulp_mode %d", 707 __func__, toep, toep->tid, ulp_mode); 708 toep->ulp_mode = ulp_mode; 709 tls_init_toep(toep); 710 if (toep->ulp_mode == ULP_MODE_TCPDDP) 711 ddp_init_toep(toep); 712 } 713 714 int 715 negative_advice(int status) 716 { 717 718 return (status == CPL_ERR_RTX_NEG_ADVICE || 719 status == CPL_ERR_PERSIST_NEG_ADVICE || 720 status == CPL_ERR_KEEPALV_NEG_ADVICE); 721 } 722 723 static int 724 alloc_tid_tab(struct tid_info *t, int flags) 725 { 726 727 MPASS(t->ntids > 0); 728 MPASS(t->tid_tab == NULL); 729 730 t->tid_tab = malloc(t->ntids * sizeof(*t->tid_tab), M_CXGBE, 731 M_ZERO | flags); 732 if (t->tid_tab == NULL) 733 return (ENOMEM); 734 atomic_store_rel_int(&t->tids_in_use, 0); 735 736 return (0); 737 } 738 739 static void 740 free_tid_tab(struct tid_info *t) 741 { 742 743 KASSERT(t->tids_in_use == 0, 744 ("%s: %d tids still in use.", __func__, t->tids_in_use)); 745 746 free(t->tid_tab, M_CXGBE); 747 t->tid_tab = NULL; 748 } 749 750 static int 751 alloc_stid_tab(struct tid_info *t, int flags) 752 { 753 754 MPASS(t->nstids > 0); 755 MPASS(t->stid_tab == NULL); 756 757 t->stid_tab = malloc(t->nstids * sizeof(*t->stid_tab), M_CXGBE, 758 M_ZERO | flags); 759 if (t->stid_tab == NULL) 760 return (ENOMEM); 761 mtx_init(&t->stid_lock, "stid lock", NULL, MTX_DEF); 762 t->stids_in_use = 0; 763 TAILQ_INIT(&t->stids); 764 t->nstids_free_head = t->nstids; 765 766 return (0); 767 } 768 769 static void 770 free_stid_tab(struct tid_info *t) 771 { 772 773 KASSERT(t->stids_in_use == 0, 774 ("%s: %d tids still in use.", __func__, t->stids_in_use)); 775 776 if (mtx_initialized(&t->stid_lock)) 777 mtx_destroy(&t->stid_lock); 778 free(t->stid_tab, M_CXGBE); 779 t->stid_tab = NULL; 780 } 781 782 static void 783 free_tid_tabs(struct tid_info *t) 784 { 785 786 free_tid_tab(t); 787 free_atid_tab(t); 788 free_stid_tab(t); 789 } 790 791 static int 792 alloc_tid_tabs(struct tid_info *t) 793 { 794 int rc; 795 796 rc = alloc_tid_tab(t, M_NOWAIT); 797 if (rc != 0) 798 goto failed; 799 800 rc = alloc_atid_tab(t, M_NOWAIT); 801 if (rc != 0) 802 goto failed; 803 804 rc = alloc_stid_tab(t, M_NOWAIT); 805 if (rc != 0) 806 goto failed; 807 808 return (0); 809 failed: 810 free_tid_tabs(t); 811 return (rc); 812 } 813 814 static void 815 free_tom_data(struct adapter *sc, struct tom_data *td) 816 { 817 818 ASSERT_SYNCHRONIZED_OP(sc); 819 820 KASSERT(TAILQ_EMPTY(&td->toep_list), 821 ("%s: TOE PCB list is not empty.", __func__)); 822 KASSERT(td->lctx_count == 0, 823 ("%s: lctx hash table is not empty.", __func__)); 824 825 t4_free_ppod_region(&td->pr); 826 827 if (td->listen_mask != 0) 828 hashdestroy(td->listen_hash, M_CXGBE, td->listen_mask); 829 830 if (mtx_initialized(&td->unsent_wr_lock)) 831 mtx_destroy(&td->unsent_wr_lock); 832 if (mtx_initialized(&td->lctx_hash_lock)) 833 mtx_destroy(&td->lctx_hash_lock); 834 if (mtx_initialized(&td->toep_list_lock)) 835 mtx_destroy(&td->toep_list_lock); 836 837 free_tid_tabs(&sc->tids); 838 free(td, M_CXGBE); 839 } 840 841 static char * 842 prepare_pkt(int open_type, uint16_t vtag, struct inpcb *inp, int *pktlen, 843 int *buflen) 844 { 845 char *pkt; 846 struct tcphdr *th; 847 int ipv6, len; 848 const int maxlen = 849 max(sizeof(struct ether_header), sizeof(struct ether_vlan_header)) + 850 max(sizeof(struct ip), sizeof(struct ip6_hdr)) + 851 sizeof(struct tcphdr); 852 853 MPASS(open_type == OPEN_TYPE_ACTIVE || open_type == OPEN_TYPE_LISTEN); 854 855 pkt = malloc(maxlen, M_CXGBE, M_ZERO | M_NOWAIT); 856 if (pkt == NULL) 857 return (NULL); 858 859 ipv6 = inp->inp_vflag & INP_IPV6; 860 len = 0; 861 862 if (EVL_VLANOFTAG(vtag) == 0xfff) { 863 struct ether_header *eh = (void *)pkt; 864 865 if (ipv6) 866 eh->ether_type = htons(ETHERTYPE_IPV6); 867 else 868 eh->ether_type = htons(ETHERTYPE_IP); 869 870 len += sizeof(*eh); 871 } else { 872 struct ether_vlan_header *evh = (void *)pkt; 873 874 evh->evl_encap_proto = htons(ETHERTYPE_VLAN); 875 evh->evl_tag = htons(vtag); 876 if (ipv6) 877 evh->evl_proto = htons(ETHERTYPE_IPV6); 878 else 879 evh->evl_proto = htons(ETHERTYPE_IP); 880 881 len += sizeof(*evh); 882 } 883 884 if (ipv6) { 885 struct ip6_hdr *ip6 = (void *)&pkt[len]; 886 887 ip6->ip6_vfc = IPV6_VERSION; 888 ip6->ip6_plen = htons(sizeof(struct tcphdr)); 889 ip6->ip6_nxt = IPPROTO_TCP; 890 if (open_type == OPEN_TYPE_ACTIVE) { 891 ip6->ip6_src = inp->in6p_laddr; 892 ip6->ip6_dst = inp->in6p_faddr; 893 } else if (open_type == OPEN_TYPE_LISTEN) { 894 ip6->ip6_src = inp->in6p_laddr; 895 ip6->ip6_dst = ip6->ip6_src; 896 } 897 898 len += sizeof(*ip6); 899 } else { 900 struct ip *ip = (void *)&pkt[len]; 901 902 ip->ip_v = IPVERSION; 903 ip->ip_hl = sizeof(*ip) >> 2; 904 ip->ip_tos = inp->inp_ip_tos; 905 ip->ip_len = htons(sizeof(struct ip) + sizeof(struct tcphdr)); 906 ip->ip_ttl = inp->inp_ip_ttl; 907 ip->ip_p = IPPROTO_TCP; 908 if (open_type == OPEN_TYPE_ACTIVE) { 909 ip->ip_src = inp->inp_laddr; 910 ip->ip_dst = inp->inp_faddr; 911 } else if (open_type == OPEN_TYPE_LISTEN) { 912 ip->ip_src = inp->inp_laddr; 913 ip->ip_dst = ip->ip_src; 914 } 915 916 len += sizeof(*ip); 917 } 918 919 th = (void *)&pkt[len]; 920 if (open_type == OPEN_TYPE_ACTIVE) { 921 th->th_sport = inp->inp_lport; /* network byte order already */ 922 th->th_dport = inp->inp_fport; /* ditto */ 923 } else if (open_type == OPEN_TYPE_LISTEN) { 924 th->th_sport = inp->inp_lport; /* network byte order already */ 925 th->th_dport = th->th_sport; 926 } 927 len += sizeof(th); 928 929 *pktlen = *buflen = len; 930 return (pkt); 931 } 932 933 const struct offload_settings * 934 lookup_offload_policy(struct adapter *sc, int open_type, struct mbuf *m, 935 uint16_t vtag, struct inpcb *inp) 936 { 937 const struct t4_offload_policy *op; 938 char *pkt; 939 struct offload_rule *r; 940 int i, matched, pktlen, buflen; 941 static const struct offload_settings allow_offloading_settings = { 942 .offload = 1, 943 .rx_coalesce = -1, 944 .cong_algo = -1, 945 .sched_class = -1, 946 .tstamp = -1, 947 .sack = -1, 948 .nagle = -1, 949 .ecn = -1, 950 .ddp = -1, 951 .tls = -1, 952 .txq = -1, 953 .rxq = -1, 954 .mss = -1, 955 }; 956 static const struct offload_settings disallow_offloading_settings = { 957 .offload = 0, 958 /* rest is irrelevant when offload is off. */ 959 }; 960 961 rw_assert(&sc->policy_lock, RA_LOCKED); 962 963 /* 964 * If there's no Connection Offloading Policy attached to the device 965 * then we need to return a default static policy. If 966 * "cop_managed_offloading" is true, then we need to disallow 967 * offloading until a COP is attached to the device. Otherwise we 968 * allow offloading ... 969 */ 970 op = sc->policy; 971 if (op == NULL) { 972 if (sc->tt.cop_managed_offloading) 973 return (&disallow_offloading_settings); 974 else 975 return (&allow_offloading_settings); 976 } 977 978 switch (open_type) { 979 case OPEN_TYPE_ACTIVE: 980 case OPEN_TYPE_LISTEN: 981 pkt = prepare_pkt(open_type, vtag, inp, &pktlen, &buflen); 982 break; 983 case OPEN_TYPE_PASSIVE: 984 MPASS(m != NULL); 985 pkt = mtod(m, char *); 986 MPASS(*pkt == CPL_PASS_ACCEPT_REQ); 987 pkt += sizeof(struct cpl_pass_accept_req); 988 pktlen = m->m_pkthdr.len - sizeof(struct cpl_pass_accept_req); 989 buflen = m->m_len - sizeof(struct cpl_pass_accept_req); 990 break; 991 default: 992 MPASS(0); 993 return (&disallow_offloading_settings); 994 } 995 996 if (pkt == NULL || pktlen == 0 || buflen == 0) 997 return (&disallow_offloading_settings); 998 999 matched = 0; 1000 r = &op->rule[0]; 1001 for (i = 0; i < op->nrules; i++, r++) { 1002 if (r->open_type != open_type && 1003 r->open_type != OPEN_TYPE_DONTCARE) { 1004 continue; 1005 } 1006 matched = bpf_filter(r->bpf_prog.bf_insns, pkt, pktlen, buflen); 1007 if (matched) 1008 break; 1009 } 1010 1011 if (open_type == OPEN_TYPE_ACTIVE || open_type == OPEN_TYPE_LISTEN) 1012 free(pkt, M_CXGBE); 1013 1014 return (matched ? &r->settings : &disallow_offloading_settings); 1015 } 1016 1017 static void 1018 reclaim_wr_resources(void *arg, int count) 1019 { 1020 struct tom_data *td = arg; 1021 STAILQ_HEAD(, wrqe) twr_list = STAILQ_HEAD_INITIALIZER(twr_list); 1022 struct cpl_act_open_req *cpl; 1023 u_int opcode, atid, tid; 1024 struct wrqe *wr; 1025 struct adapter *sc = td_adapter(td); 1026 1027 mtx_lock(&td->unsent_wr_lock); 1028 STAILQ_SWAP(&td->unsent_wr_list, &twr_list, wrqe); 1029 mtx_unlock(&td->unsent_wr_lock); 1030 1031 while ((wr = STAILQ_FIRST(&twr_list)) != NULL) { 1032 STAILQ_REMOVE_HEAD(&twr_list, link); 1033 1034 cpl = wrtod(wr); 1035 opcode = GET_OPCODE(cpl); 1036 1037 switch (opcode) { 1038 case CPL_ACT_OPEN_REQ: 1039 case CPL_ACT_OPEN_REQ6: 1040 atid = G_TID_TID(be32toh(OPCODE_TID(cpl))); 1041 CTR2(KTR_CXGBE, "%s: atid %u ", __func__, atid); 1042 act_open_failure_cleanup(sc, atid, EHOSTUNREACH); 1043 free(wr, M_CXGBE); 1044 break; 1045 case CPL_PASS_ACCEPT_RPL: 1046 tid = GET_TID(cpl); 1047 CTR2(KTR_CXGBE, "%s: tid %u ", __func__, tid); 1048 synack_failure_cleanup(sc, tid); 1049 free(wr, M_CXGBE); 1050 break; 1051 default: 1052 log(LOG_ERR, "%s: leaked work request %p, wr_len %d, " 1053 "opcode %x\n", __func__, wr, wr->wr_len, opcode); 1054 /* WR not freed here; go look at it with a debugger. */ 1055 } 1056 } 1057 } 1058 1059 /* 1060 * Ground control to Major TOM 1061 * Commencing countdown, engines on 1062 */ 1063 static int 1064 t4_tom_activate(struct adapter *sc) 1065 { 1066 struct tom_data *td; 1067 struct toedev *tod; 1068 struct vi_info *vi; 1069 int i, rc, v; 1070 1071 ASSERT_SYNCHRONIZED_OP(sc); 1072 1073 /* per-adapter softc for TOM */ 1074 td = malloc(sizeof(*td), M_CXGBE, M_ZERO | M_NOWAIT); 1075 if (td == NULL) 1076 return (ENOMEM); 1077 1078 /* List of TOE PCBs and associated lock */ 1079 mtx_init(&td->toep_list_lock, "PCB list lock", NULL, MTX_DEF); 1080 TAILQ_INIT(&td->toep_list); 1081 1082 /* Listen context */ 1083 mtx_init(&td->lctx_hash_lock, "lctx hash lock", NULL, MTX_DEF); 1084 td->listen_hash = hashinit_flags(LISTEN_HASH_SIZE, M_CXGBE, 1085 &td->listen_mask, HASH_NOWAIT); 1086 1087 /* List of WRs for which L2 resolution failed */ 1088 mtx_init(&td->unsent_wr_lock, "Unsent WR list lock", NULL, MTX_DEF); 1089 STAILQ_INIT(&td->unsent_wr_list); 1090 TASK_INIT(&td->reclaim_wr_resources, 0, reclaim_wr_resources, td); 1091 1092 /* TID tables */ 1093 rc = alloc_tid_tabs(&sc->tids); 1094 if (rc != 0) 1095 goto done; 1096 1097 rc = t4_init_ppod_region(&td->pr, &sc->vres.ddp, 1098 t4_read_reg(sc, A_ULP_RX_TDDP_PSZ), "TDDP page pods"); 1099 if (rc != 0) 1100 goto done; 1101 t4_set_reg_field(sc, A_ULP_RX_TDDP_TAGMASK, 1102 V_TDDPTAGMASK(M_TDDPTAGMASK), td->pr.pr_tag_mask); 1103 1104 /* toedev ops */ 1105 tod = &td->tod; 1106 init_toedev(tod); 1107 tod->tod_softc = sc; 1108 tod->tod_connect = t4_connect; 1109 tod->tod_listen_start = t4_listen_start; 1110 tod->tod_listen_stop = t4_listen_stop; 1111 tod->tod_rcvd = t4_rcvd; 1112 tod->tod_output = t4_tod_output; 1113 tod->tod_send_rst = t4_send_rst; 1114 tod->tod_send_fin = t4_send_fin; 1115 tod->tod_pcb_detach = t4_pcb_detach; 1116 tod->tod_l2_update = t4_l2_update; 1117 tod->tod_syncache_added = t4_syncache_added; 1118 tod->tod_syncache_removed = t4_syncache_removed; 1119 tod->tod_syncache_respond = t4_syncache_respond; 1120 tod->tod_offload_socket = t4_offload_socket; 1121 tod->tod_ctloutput = t4_ctloutput; 1122 tod->tod_tcp_info = t4_tcp_info; 1123 1124 for_each_port(sc, i) { 1125 for_each_vi(sc->port[i], v, vi) { 1126 TOEDEV(vi->ifp) = &td->tod; 1127 } 1128 } 1129 1130 sc->tom_softc = td; 1131 register_toedev(sc->tom_softc); 1132 1133 done: 1134 if (rc != 0) 1135 free_tom_data(sc, td); 1136 return (rc); 1137 } 1138 1139 static int 1140 t4_tom_deactivate(struct adapter *sc) 1141 { 1142 int rc = 0; 1143 struct tom_data *td = sc->tom_softc; 1144 1145 ASSERT_SYNCHRONIZED_OP(sc); 1146 1147 if (td == NULL) 1148 return (0); /* XXX. KASSERT? */ 1149 1150 if (sc->offload_map != 0) 1151 return (EBUSY); /* at least one port has IFCAP_TOE enabled */ 1152 1153 if (uld_active(sc, ULD_IWARP) || uld_active(sc, ULD_ISCSI)) 1154 return (EBUSY); /* both iWARP and iSCSI rely on the TOE. */ 1155 1156 mtx_lock(&td->toep_list_lock); 1157 if (!TAILQ_EMPTY(&td->toep_list)) 1158 rc = EBUSY; 1159 mtx_unlock(&td->toep_list_lock); 1160 1161 mtx_lock(&td->lctx_hash_lock); 1162 if (td->lctx_count > 0) 1163 rc = EBUSY; 1164 mtx_unlock(&td->lctx_hash_lock); 1165 1166 taskqueue_drain(taskqueue_thread, &td->reclaim_wr_resources); 1167 mtx_lock(&td->unsent_wr_lock); 1168 if (!STAILQ_EMPTY(&td->unsent_wr_list)) 1169 rc = EBUSY; 1170 mtx_unlock(&td->unsent_wr_lock); 1171 1172 if (rc == 0) { 1173 unregister_toedev(sc->tom_softc); 1174 free_tom_data(sc, td); 1175 sc->tom_softc = NULL; 1176 } 1177 1178 return (rc); 1179 } 1180 1181 static int 1182 t4_aio_queue_tom(struct socket *so, struct kaiocb *job) 1183 { 1184 struct tcpcb *tp = so_sototcpcb(so); 1185 struct toepcb *toep = tp->t_toe; 1186 int error; 1187 1188 if (toep->ulp_mode == ULP_MODE_TCPDDP) { 1189 error = t4_aio_queue_ddp(so, job); 1190 if (error != EOPNOTSUPP) 1191 return (error); 1192 } 1193 1194 return (t4_aio_queue_aiotx(so, job)); 1195 } 1196 1197 static int 1198 t4_ctloutput_tom(struct socket *so, struct sockopt *sopt) 1199 { 1200 1201 if (sopt->sopt_level != IPPROTO_TCP) 1202 return (tcp_ctloutput(so, sopt)); 1203 1204 switch (sopt->sopt_name) { 1205 case TCP_TLSOM_SET_TLS_CONTEXT: 1206 case TCP_TLSOM_GET_TLS_TOM: 1207 case TCP_TLSOM_CLR_TLS_TOM: 1208 case TCP_TLSOM_CLR_QUIES: 1209 return (t4_ctloutput_tls(so, sopt)); 1210 default: 1211 return (tcp_ctloutput(so, sopt)); 1212 } 1213 } 1214 1215 static int 1216 t4_tom_mod_load(void) 1217 { 1218 struct protosw *tcp_protosw, *tcp6_protosw; 1219 1220 /* CPL handlers */ 1221 t4_register_shared_cpl_handler(CPL_L2T_WRITE_RPL, do_l2t_write_rpl2, 1222 CPL_COOKIE_TOM); 1223 t4_init_connect_cpl_handlers(); 1224 t4_init_listen_cpl_handlers(); 1225 t4_init_cpl_io_handlers(); 1226 1227 t4_ddp_mod_load(); 1228 t4_tls_mod_load(); 1229 1230 tcp_protosw = pffindproto(PF_INET, IPPROTO_TCP, SOCK_STREAM); 1231 if (tcp_protosw == NULL) 1232 return (ENOPROTOOPT); 1233 bcopy(tcp_protosw, &toe_protosw, sizeof(toe_protosw)); 1234 bcopy(tcp_protosw->pr_usrreqs, &toe_usrreqs, sizeof(toe_usrreqs)); 1235 toe_usrreqs.pru_aio_queue = t4_aio_queue_tom; 1236 toe_protosw.pr_ctloutput = t4_ctloutput_tom; 1237 toe_protosw.pr_usrreqs = &toe_usrreqs; 1238 1239 tcp6_protosw = pffindproto(PF_INET6, IPPROTO_TCP, SOCK_STREAM); 1240 if (tcp6_protosw == NULL) 1241 return (ENOPROTOOPT); 1242 bcopy(tcp6_protosw, &toe6_protosw, sizeof(toe6_protosw)); 1243 bcopy(tcp6_protosw->pr_usrreqs, &toe6_usrreqs, sizeof(toe6_usrreqs)); 1244 toe6_usrreqs.pru_aio_queue = t4_aio_queue_tom; 1245 toe6_protosw.pr_ctloutput = t4_ctloutput_tom; 1246 toe6_protosw.pr_usrreqs = &toe6_usrreqs; 1247 1248 return (t4_register_uld(&tom_uld_info)); 1249 } 1250 1251 static void 1252 tom_uninit(struct adapter *sc, void *arg __unused) 1253 { 1254 if (begin_synchronized_op(sc, NULL, SLEEP_OK | INTR_OK, "t4tomun")) 1255 return; 1256 1257 /* Try to free resources (works only if no port has IFCAP_TOE) */ 1258 if (uld_active(sc, ULD_TOM)) 1259 t4_deactivate_uld(sc, ULD_TOM); 1260 1261 end_synchronized_op(sc, 0); 1262 } 1263 1264 static int 1265 t4_tom_mod_unload(void) 1266 { 1267 t4_iterate(tom_uninit, NULL); 1268 1269 if (t4_unregister_uld(&tom_uld_info) == EBUSY) 1270 return (EBUSY); 1271 1272 t4_tls_mod_unload(); 1273 t4_ddp_mod_unload(); 1274 1275 t4_uninit_connect_cpl_handlers(); 1276 t4_uninit_listen_cpl_handlers(); 1277 t4_uninit_cpl_io_handlers(); 1278 t4_register_shared_cpl_handler(CPL_L2T_WRITE_RPL, NULL, CPL_COOKIE_TOM); 1279 1280 return (0); 1281 } 1282 #endif /* TCP_OFFLOAD */ 1283 1284 static int 1285 t4_tom_modevent(module_t mod, int cmd, void *arg) 1286 { 1287 int rc = 0; 1288 1289 #ifdef TCP_OFFLOAD 1290 switch (cmd) { 1291 case MOD_LOAD: 1292 rc = t4_tom_mod_load(); 1293 break; 1294 1295 case MOD_UNLOAD: 1296 rc = t4_tom_mod_unload(); 1297 break; 1298 1299 default: 1300 rc = EINVAL; 1301 } 1302 #else 1303 printf("t4_tom: compiled without TCP_OFFLOAD support.\n"); 1304 rc = EOPNOTSUPP; 1305 #endif 1306 return (rc); 1307 } 1308 1309 static moduledata_t t4_tom_moddata= { 1310 "t4_tom", 1311 t4_tom_modevent, 1312 0 1313 }; 1314 1315 MODULE_VERSION(t4_tom, 1); 1316 MODULE_DEPEND(t4_tom, toecore, 1, 1, 1); 1317 MODULE_DEPEND(t4_tom, t4nex, 1, 1, 1); 1318 DECLARE_MODULE(t4_tom, t4_tom_moddata, SI_SUB_EXEC, SI_ORDER_ANY); 1319