t4_tom.c revision 255006
1237263Snp/*- 2237263Snp * Copyright (c) 2012 Chelsio Communications, Inc. 3237263Snp * All rights reserved. 4237263Snp * Written by: Navdeep Parhar <np@FreeBSD.org> 5237263Snp * 6237263Snp * Redistribution and use in source and binary forms, with or without 7237263Snp * modification, are permitted provided that the following conditions 8237263Snp * are met: 9237263Snp * 1. Redistributions of source code must retain the above copyright 10237263Snp * notice, this list of conditions and the following disclaimer. 11237263Snp * 2. Redistributions in binary form must reproduce the above copyright 12237263Snp * notice, this list of conditions and the following disclaimer in the 13237263Snp * documentation and/or other materials provided with the distribution. 14237263Snp * 15237263Snp * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16237263Snp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17237263Snp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18237263Snp * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19237263Snp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20237263Snp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21237263Snp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22237263Snp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23237263Snp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24237263Snp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25237263Snp * SUCH DAMAGE. 26237263Snp */ 27237263Snp 28237263Snp#include <sys/cdefs.h> 29237263Snp__FBSDID("$FreeBSD: head/sys/dev/cxgbe/tom/t4_tom.c 255006 2013-08-28 20:59:22Z np $"); 30237263Snp 31237263Snp#include "opt_inet.h" 32245441Snp#include "opt_inet6.h" 33237263Snp 34237263Snp#include <sys/param.h> 35237263Snp#include <sys/types.h> 36237263Snp#include <sys/systm.h> 37237263Snp#include <sys/kernel.h> 38237263Snp#include <sys/ktr.h> 39237263Snp#include <sys/module.h> 40237263Snp#include <sys/protosw.h> 41237263Snp#include <sys/domain.h> 42237263Snp#include <sys/socket.h> 43237263Snp#include <sys/socketvar.h> 44249627Snp#include <sys/taskqueue.h> 45245448Snp#include <net/if.h> 46237263Snp#include <netinet/in.h> 47237263Snp#include <netinet/in_pcb.h> 48245448Snp#include <netinet/in_var.h> 49237263Snp#include <netinet/ip.h> 50245441Snp#include <netinet/ip6.h> 51237263Snp#include <netinet/tcp_var.h> 52245448Snp#include <netinet6/scope6_var.h> 53237263Snp#define TCPSTATES 54237263Snp#include <netinet/tcp_fsm.h> 55237263Snp#include <netinet/toecore.h> 56237263Snp 57237263Snp#ifdef TCP_OFFLOAD 58237263Snp#include "common/common.h" 59237263Snp#include "common/t4_msg.h" 60237263Snp#include "common/t4_regs.h" 61252705Snp#include "common/t4_regs_values.h" 62252716Snp#include "common/t4_tcb.h" 63237263Snp#include "tom/t4_tom_l2t.h" 64237263Snp#include "tom/t4_tom.h" 65237263Snp 66239344Snpstatic struct protosw ddp_protosw; 67239344Snpstatic struct pr_usrreqs ddp_usrreqs; 68239344Snp 69245441Snpstatic struct protosw ddp6_protosw; 70245441Snpstatic struct pr_usrreqs ddp6_usrreqs; 71245441Snp 72237263Snp/* Module ops */ 73237263Snpstatic int t4_tom_mod_load(void); 74237263Snpstatic int t4_tom_mod_unload(void); 75237263Snpstatic int t4_tom_modevent(module_t, int, void *); 76237263Snp 77237263Snp/* ULD ops and helpers */ 78237263Snpstatic int t4_tom_activate(struct adapter *); 79237263Snpstatic int t4_tom_deactivate(struct adapter *); 80237263Snp 81237263Snpstatic struct uld_info tom_uld_info = { 82237263Snp .uld_id = ULD_TOM, 83237263Snp .activate = t4_tom_activate, 84237263Snp .deactivate = t4_tom_deactivate, 85237263Snp}; 86237263Snp 87237263Snpstatic void queue_tid_release(struct adapter *, int); 88237263Snpstatic void release_offload_resources(struct toepcb *); 89237263Snpstatic int alloc_tid_tabs(struct tid_info *); 90237263Snpstatic void free_tid_tabs(struct tid_info *); 91245448Snpstatic int add_lip(struct adapter *, struct in6_addr *); 92245448Snpstatic int delete_lip(struct adapter *, struct in6_addr *); 93245448Snpstatic struct clip_entry *search_lip(struct tom_data *, struct in6_addr *); 94245448Snpstatic void init_clip_table(struct adapter *, struct tom_data *); 95249627Snpstatic void update_clip(struct adapter *, void *); 96249627Snpstatic void t4_clip_task(void *, int); 97249627Snpstatic void update_clip_table(struct adapter *, struct tom_data *); 98245448Snpstatic void destroy_clip_table(struct adapter *, struct tom_data *); 99237263Snpstatic void free_tom_data(struct adapter *, struct tom_data *); 100237263Snp 101249627Snpstatic int in6_ifaddr_gen; 102249627Snpstatic eventhandler_tag ifaddr_evhandler; 103249627Snpstatic struct timeout_task clip_task; 104249627Snp 105237263Snpstruct toepcb * 106237263Snpalloc_toepcb(struct port_info *pi, int txqid, int rxqid, int flags) 107237263Snp{ 108237263Snp struct adapter *sc = pi->adapter; 109237263Snp struct toepcb *toep; 110237263Snp int tx_credits, txsd_total, len; 111237263Snp 112237263Snp /* 113237263Snp * The firmware counts tx work request credits in units of 16 bytes 114237263Snp * each. Reserve room for an ABORT_REQ so the driver never has to worry 115237263Snp * about tx credits if it wants to abort a connection. 116237263Snp */ 117237263Snp tx_credits = sc->params.ofldq_wr_cred; 118237263Snp tx_credits -= howmany(sizeof(struct cpl_abort_req), 16); 119237263Snp 120237263Snp /* 121237263Snp * Shortest possible tx work request is a fw_ofld_tx_data_wr + 1 byte 122237263Snp * immediate payload, and firmware counts tx work request credits in 123237263Snp * units of 16 byte. Calculate the maximum work requests possible. 124237263Snp */ 125237263Snp txsd_total = tx_credits / 126237263Snp howmany((sizeof(struct fw_ofld_tx_data_wr) + 1), 16); 127237263Snp 128237263Snp if (txqid < 0) 129237263Snp txqid = (arc4random() % pi->nofldtxq) + pi->first_ofld_txq; 130237263Snp KASSERT(txqid >= pi->first_ofld_txq && 131237263Snp txqid < pi->first_ofld_txq + pi->nofldtxq, 132237263Snp ("%s: txqid %d for port %p (first %d, n %d)", __func__, txqid, pi, 133237263Snp pi->first_ofld_txq, pi->nofldtxq)); 134237263Snp 135237263Snp if (rxqid < 0) 136237263Snp rxqid = (arc4random() % pi->nofldrxq) + pi->first_ofld_rxq; 137237263Snp KASSERT(rxqid >= pi->first_ofld_rxq && 138237263Snp rxqid < pi->first_ofld_rxq + pi->nofldrxq, 139237263Snp ("%s: rxqid %d for port %p (first %d, n %d)", __func__, rxqid, pi, 140237263Snp pi->first_ofld_rxq, pi->nofldrxq)); 141237263Snp 142237263Snp len = offsetof(struct toepcb, txsd) + 143237263Snp txsd_total * sizeof(struct ofld_tx_sdesc); 144237263Snp 145237263Snp toep = malloc(len, M_CXGBE, M_ZERO | flags); 146237263Snp if (toep == NULL) 147237263Snp return (NULL); 148237263Snp 149237263Snp toep->td = sc->tom_softc; 150237263Snp toep->port = pi; 151237263Snp toep->tx_credits = tx_credits; 152237263Snp toep->ofld_txq = &sc->sge.ofld_txq[txqid]; 153237263Snp toep->ofld_rxq = &sc->sge.ofld_rxq[rxqid]; 154237263Snp toep->ctrlq = &sc->sge.ctrlq[pi->port_id]; 155237263Snp toep->txsd_total = txsd_total; 156237263Snp toep->txsd_avail = txsd_total; 157237263Snp toep->txsd_pidx = 0; 158237263Snp toep->txsd_cidx = 0; 159237263Snp 160237263Snp return (toep); 161237263Snp} 162237263Snp 163237263Snpvoid 164237263Snpfree_toepcb(struct toepcb *toep) 165237263Snp{ 166237263Snp 167239514Snp KASSERT(!(toep->flags & TPF_ATTACHED), 168237263Snp ("%s: attached to an inpcb", __func__)); 169239514Snp KASSERT(!(toep->flags & TPF_CPL_PENDING), 170237263Snp ("%s: CPL pending", __func__)); 171237263Snp 172237263Snp free(toep, M_CXGBE); 173237263Snp} 174237263Snp 175237263Snp/* 176237263Snp * Set up the socket for TCP offload. 177237263Snp */ 178237263Snpvoid 179237263Snpoffload_socket(struct socket *so, struct toepcb *toep) 180237263Snp{ 181237263Snp struct tom_data *td = toep->td; 182237263Snp struct inpcb *inp = sotoinpcb(so); 183237263Snp struct tcpcb *tp = intotcpcb(inp); 184237263Snp struct sockbuf *sb; 185237263Snp 186237263Snp INP_WLOCK_ASSERT(inp); 187237263Snp 188237263Snp /* Update socket */ 189237263Snp sb = &so->so_snd; 190237263Snp SOCKBUF_LOCK(sb); 191237263Snp sb->sb_flags |= SB_NOCOALESCE; 192237263Snp SOCKBUF_UNLOCK(sb); 193237263Snp sb = &so->so_rcv; 194237263Snp SOCKBUF_LOCK(sb); 195237263Snp sb->sb_flags |= SB_NOCOALESCE; 196245441Snp if (toep->ulp_mode == ULP_MODE_TCPDDP) { 197245441Snp if (inp->inp_vflag & INP_IPV6) 198245441Snp so->so_proto = &ddp6_protosw; 199245441Snp else 200245441Snp so->so_proto = &ddp_protosw; 201245441Snp } 202237263Snp SOCKBUF_UNLOCK(sb); 203237263Snp 204237263Snp /* Update TCP PCB */ 205237263Snp tp->tod = &td->tod; 206237263Snp tp->t_toe = toep; 207237263Snp tp->t_flags |= TF_TOE; 208237263Snp 209237263Snp /* Install an extra hold on inp */ 210237263Snp toep->inp = inp; 211239514Snp toep->flags |= TPF_ATTACHED; 212237263Snp in_pcbref(inp); 213237263Snp 214237263Snp /* Add the TOE PCB to the active list */ 215237263Snp mtx_lock(&td->toep_list_lock); 216237263Snp TAILQ_INSERT_HEAD(&td->toep_list, toep, link); 217237263Snp mtx_unlock(&td->toep_list_lock); 218237263Snp} 219237263Snp 220237263Snp/* This is _not_ the normal way to "unoffload" a socket. */ 221237263Snpvoid 222237263Snpundo_offload_socket(struct socket *so) 223237263Snp{ 224237263Snp struct inpcb *inp = sotoinpcb(so); 225237263Snp struct tcpcb *tp = intotcpcb(inp); 226237263Snp struct toepcb *toep = tp->t_toe; 227237263Snp struct tom_data *td = toep->td; 228237263Snp struct sockbuf *sb; 229237263Snp 230237263Snp INP_WLOCK_ASSERT(inp); 231237263Snp 232237263Snp sb = &so->so_snd; 233237263Snp SOCKBUF_LOCK(sb); 234237263Snp sb->sb_flags &= ~SB_NOCOALESCE; 235237263Snp SOCKBUF_UNLOCK(sb); 236237263Snp sb = &so->so_rcv; 237237263Snp SOCKBUF_LOCK(sb); 238237263Snp sb->sb_flags &= ~SB_NOCOALESCE; 239237263Snp SOCKBUF_UNLOCK(sb); 240237263Snp 241237263Snp tp->tod = NULL; 242237263Snp tp->t_toe = NULL; 243237263Snp tp->t_flags &= ~TF_TOE; 244237263Snp 245237263Snp toep->inp = NULL; 246239514Snp toep->flags &= ~TPF_ATTACHED; 247237263Snp if (in_pcbrele_wlocked(inp)) 248237263Snp panic("%s: inp freed.", __func__); 249237263Snp 250237263Snp mtx_lock(&td->toep_list_lock); 251237263Snp TAILQ_REMOVE(&td->toep_list, toep, link); 252237263Snp mtx_unlock(&td->toep_list_lock); 253237263Snp} 254237263Snp 255237263Snpstatic void 256237263Snprelease_offload_resources(struct toepcb *toep) 257237263Snp{ 258237263Snp struct tom_data *td = toep->td; 259237263Snp struct adapter *sc = td_adapter(td); 260237263Snp int tid = toep->tid; 261237263Snp 262239514Snp KASSERT(!(toep->flags & TPF_CPL_PENDING), 263237263Snp ("%s: %p has CPL pending.", __func__, toep)); 264239514Snp KASSERT(!(toep->flags & TPF_ATTACHED), 265237263Snp ("%s: %p is still attached.", __func__, toep)); 266237263Snp 267245448Snp CTR5(KTR_CXGBE, "%s: toep %p (tid %d, l2te %p, ce %p)", 268245448Snp __func__, toep, tid, toep->l2te, toep->ce); 269237263Snp 270239344Snp if (toep->ulp_mode == ULP_MODE_TCPDDP) 271239344Snp release_ddp_resources(toep); 272239344Snp 273237263Snp if (toep->l2te) 274237263Snp t4_l2t_release(toep->l2te); 275237263Snp 276237263Snp if (tid >= 0) { 277237263Snp remove_tid(sc, tid); 278237263Snp release_tid(sc, tid, toep->ctrlq); 279237263Snp } 280237263Snp 281245448Snp if (toep->ce) 282245448Snp release_lip(td, toep->ce); 283245448Snp 284237263Snp mtx_lock(&td->toep_list_lock); 285237263Snp TAILQ_REMOVE(&td->toep_list, toep, link); 286237263Snp mtx_unlock(&td->toep_list_lock); 287237263Snp 288237263Snp free_toepcb(toep); 289237263Snp} 290237263Snp 291237263Snp/* 292237263Snp * The kernel is done with the TCP PCB and this is our opportunity to unhook the 293237263Snp * toepcb hanging off of it. If the TOE driver is also done with the toepcb (no 294237263Snp * pending CPL) then it is time to release all resources tied to the toepcb. 295237263Snp * 296237263Snp * Also gets called when an offloaded active open fails and the TOM wants the 297237263Snp * kernel to take the TCP PCB back. 298237263Snp */ 299237263Snpstatic void 300237263Snpt4_pcb_detach(struct toedev *tod __unused, struct tcpcb *tp) 301237263Snp{ 302237263Snp#if defined(KTR) || defined(INVARIANTS) 303237263Snp struct inpcb *inp = tp->t_inpcb; 304237263Snp#endif 305237263Snp struct toepcb *toep = tp->t_toe; 306237263Snp 307237263Snp INP_WLOCK_ASSERT(inp); 308237263Snp 309237263Snp KASSERT(toep != NULL, ("%s: toep is NULL", __func__)); 310239514Snp KASSERT(toep->flags & TPF_ATTACHED, 311237263Snp ("%s: not attached", __func__)); 312237263Snp 313237263Snp#ifdef KTR 314237263Snp if (tp->t_state == TCPS_SYN_SENT) { 315237263Snp CTR6(KTR_CXGBE, "%s: atid %d, toep %p (0x%x), inp %p (0x%x)", 316237263Snp __func__, toep->tid, toep, toep->flags, inp, 317237263Snp inp->inp_flags); 318237263Snp } else { 319237263Snp CTR6(KTR_CXGBE, 320237263Snp "t4_pcb_detach: tid %d (%s), toep %p (0x%x), inp %p (0x%x)", 321237263Snp toep->tid, tcpstates[tp->t_state], toep, toep->flags, inp, 322237263Snp inp->inp_flags); 323237263Snp } 324237263Snp#endif 325237263Snp 326237263Snp tp->t_toe = NULL; 327237263Snp tp->t_flags &= ~TF_TOE; 328239514Snp toep->flags &= ~TPF_ATTACHED; 329237263Snp 330239514Snp if (!(toep->flags & TPF_CPL_PENDING)) 331237263Snp release_offload_resources(toep); 332237263Snp} 333237263Snp 334237263Snp/* 335252716Snp * setsockopt handler. 336252716Snp */ 337252716Snpstatic void 338252716Snpt4_ctloutput(struct toedev *tod, struct tcpcb *tp, int dir, int name) 339252716Snp{ 340252716Snp struct adapter *sc = tod->tod_softc; 341252716Snp struct toepcb *toep = tp->t_toe; 342252716Snp 343252716Snp if (dir == SOPT_GET) 344252716Snp return; 345252716Snp 346252716Snp CTR4(KTR_CXGBE, "%s: tp %p, dir %u, name %u", __func__, tp, dir, name); 347252716Snp 348252716Snp switch (name) { 349252716Snp case TCP_NODELAY: 350252716Snp t4_set_tcb_field(sc, toep, 1, W_TCB_T_FLAGS, V_TF_NAGLE(1), 351252716Snp V_TF_NAGLE(tp->t_flags & TF_NODELAY ? 0 : 1)); 352252716Snp break; 353252716Snp default: 354252716Snp break; 355252716Snp } 356252716Snp} 357252716Snp 358252716Snp/* 359237263Snp * The TOE driver will not receive any more CPLs for the tid associated with the 360237263Snp * toepcb; release the hold on the inpcb. 361237263Snp */ 362237263Snpvoid 363237263Snpfinal_cpl_received(struct toepcb *toep) 364237263Snp{ 365237263Snp struct inpcb *inp = toep->inp; 366237263Snp 367237263Snp KASSERT(inp != NULL, ("%s: inp is NULL", __func__)); 368237263Snp INP_WLOCK_ASSERT(inp); 369239514Snp KASSERT(toep->flags & TPF_CPL_PENDING, 370237263Snp ("%s: CPL not pending already?", __func__)); 371237263Snp 372237263Snp CTR6(KTR_CXGBE, "%s: tid %d, toep %p (0x%x), inp %p (0x%x)", 373237263Snp __func__, toep->tid, toep, toep->flags, inp, inp->inp_flags); 374237263Snp 375237263Snp toep->inp = NULL; 376239514Snp toep->flags &= ~TPF_CPL_PENDING; 377237263Snp 378239514Snp if (!(toep->flags & TPF_ATTACHED)) 379237263Snp release_offload_resources(toep); 380237263Snp 381237263Snp if (!in_pcbrele_wlocked(inp)) 382237263Snp INP_WUNLOCK(inp); 383237263Snp} 384237263Snp 385237263Snpvoid 386237263Snpinsert_tid(struct adapter *sc, int tid, void *ctx) 387237263Snp{ 388237263Snp struct tid_info *t = &sc->tids; 389237263Snp 390237263Snp t->tid_tab[tid] = ctx; 391237263Snp atomic_add_int(&t->tids_in_use, 1); 392237263Snp} 393237263Snp 394237263Snpvoid * 395237263Snplookup_tid(struct adapter *sc, int tid) 396237263Snp{ 397237263Snp struct tid_info *t = &sc->tids; 398237263Snp 399237263Snp return (t->tid_tab[tid]); 400237263Snp} 401237263Snp 402237263Snpvoid 403237263Snpupdate_tid(struct adapter *sc, int tid, void *ctx) 404237263Snp{ 405237263Snp struct tid_info *t = &sc->tids; 406237263Snp 407237263Snp t->tid_tab[tid] = ctx; 408237263Snp} 409237263Snp 410237263Snpvoid 411237263Snpremove_tid(struct adapter *sc, int tid) 412237263Snp{ 413237263Snp struct tid_info *t = &sc->tids; 414237263Snp 415237263Snp t->tid_tab[tid] = NULL; 416237263Snp atomic_subtract_int(&t->tids_in_use, 1); 417237263Snp} 418237263Snp 419237263Snpvoid 420237263Snprelease_tid(struct adapter *sc, int tid, struct sge_wrq *ctrlq) 421237263Snp{ 422237263Snp struct wrqe *wr; 423237263Snp struct cpl_tid_release *req; 424237263Snp 425237263Snp wr = alloc_wrqe(sizeof(*req), ctrlq); 426237263Snp if (wr == NULL) { 427237263Snp queue_tid_release(sc, tid); /* defer */ 428237263Snp return; 429237263Snp } 430237263Snp req = wrtod(wr); 431237263Snp 432237263Snp INIT_TP_WR_MIT_CPL(req, CPL_TID_RELEASE, tid); 433237263Snp 434237263Snp t4_wrq_tx(sc, wr); 435237263Snp} 436237263Snp 437237263Snpstatic void 438237263Snpqueue_tid_release(struct adapter *sc, int tid) 439237263Snp{ 440237263Snp 441237263Snp CXGBE_UNIMPLEMENTED("deferred tid release"); 442237263Snp} 443237263Snp 444237263Snp/* 445237263Snp * What mtu_idx to use, given a 4-tuple and/or an MSS cap 446237263Snp */ 447237263Snpint 448237263Snpfind_best_mtu_idx(struct adapter *sc, struct in_conninfo *inc, int pmss) 449237263Snp{ 450237263Snp unsigned short *mtus = &sc->params.mtus[0]; 451245441Snp int i, mss, n; 452237263Snp 453237263Snp KASSERT(inc != NULL || pmss > 0, 454237263Snp ("%s: at least one of inc/pmss must be specified", __func__)); 455237263Snp 456237263Snp mss = inc ? tcp_mssopt(inc) : pmss; 457237263Snp if (pmss > 0 && mss > pmss) 458237263Snp mss = pmss; 459237263Snp 460245441Snp if (inc->inc_flags & INC_ISIPV6) 461245441Snp n = sizeof(struct ip6_hdr) + sizeof(struct tcphdr); 462245441Snp else 463245441Snp n = sizeof(struct ip) + sizeof(struct tcphdr); 464237263Snp 465245441Snp for (i = 0; i < NMTUS - 1 && mtus[i + 1] <= mss + n; i++) 466245441Snp continue; 467245441Snp 468237263Snp return (i); 469237263Snp} 470237263Snp 471237263Snp/* 472237263Snp * Determine the receive window size for a socket. 473237263Snp */ 474237263Snpu_long 475237263Snpselect_rcv_wnd(struct socket *so) 476237263Snp{ 477237263Snp unsigned long wnd; 478237263Snp 479237263Snp SOCKBUF_LOCK_ASSERT(&so->so_rcv); 480237263Snp 481237263Snp wnd = sbspace(&so->so_rcv); 482237263Snp if (wnd < MIN_RCV_WND) 483237263Snp wnd = MIN_RCV_WND; 484237263Snp 485237263Snp return min(wnd, MAX_RCV_WND); 486237263Snp} 487237263Snp 488237263Snpint 489237263Snpselect_rcv_wscale(void) 490237263Snp{ 491237263Snp int wscale = 0; 492237263Snp unsigned long space = sb_max; 493237263Snp 494237263Snp if (space > MAX_RCV_WND) 495237263Snp space = MAX_RCV_WND; 496237263Snp 497237263Snp while (wscale < TCP_MAX_WINSHIFT && (TCP_MAXWIN << wscale) < space) 498237263Snp wscale++; 499237263Snp 500237263Snp return (wscale); 501237263Snp} 502237263Snp 503237263Snpextern int always_keepalive; 504237263Snp#define VIID_SMACIDX(v) (((unsigned int)(v) & 0x7f) << 1) 505237263Snp 506237263Snp/* 507237263Snp * socket so could be a listening socket too. 508237263Snp */ 509237263Snpuint64_t 510237263Snpcalc_opt0(struct socket *so, struct port_info *pi, struct l2t_entry *e, 511237263Snp int mtu_idx, int rscale, int rx_credits, int ulp_mode) 512237263Snp{ 513237263Snp uint64_t opt0; 514237263Snp 515237263Snp KASSERT(rx_credits <= M_RCV_BUFSIZ, 516237263Snp ("%s: rcv_bufsiz too high", __func__)); 517237263Snp 518237263Snp opt0 = F_TCAM_BYPASS | V_WND_SCALE(rscale) | V_MSS_IDX(mtu_idx) | 519237263Snp V_ULP_MODE(ulp_mode) | V_RCV_BUFSIZ(rx_credits); 520237263Snp 521237263Snp if (so != NULL) { 522237263Snp struct inpcb *inp = sotoinpcb(so); 523237263Snp struct tcpcb *tp = intotcpcb(inp); 524237263Snp int keepalive = always_keepalive || 525237263Snp so_options_get(so) & SO_KEEPALIVE; 526237263Snp 527237263Snp opt0 |= V_NAGLE((tp->t_flags & TF_NODELAY) == 0); 528237263Snp opt0 |= V_KEEP_ALIVE(keepalive != 0); 529237263Snp } 530237263Snp 531237263Snp if (e != NULL) 532237263Snp opt0 |= V_L2T_IDX(e->idx); 533237263Snp 534237263Snp if (pi != NULL) { 535237263Snp opt0 |= V_SMAC_SEL(VIID_SMACIDX(pi->viid)); 536237263Snp opt0 |= V_TX_CHAN(pi->tx_chan); 537237263Snp } 538237263Snp 539237263Snp return htobe64(opt0); 540237263Snp} 541237263Snp 542248925Snpuint64_t 543252705Snpselect_ntuple(struct port_info *pi, struct l2t_entry *e) 544237263Snp{ 545252705Snp struct adapter *sc = pi->adapter; 546252705Snp struct tp_params *tp = &sc->params.tp; 547237263Snp uint16_t viid = pi->viid; 548252705Snp uint64_t ntuple = 0; 549237263Snp 550252705Snp /* 551252705Snp * Initialize each of the fields which we care about which are present 552252705Snp * in the Compressed Filter Tuple. 553252705Snp */ 554252705Snp if (tp->vlan_shift >= 0 && e->vlan != CPL_L2T_VLAN_NONE) 555252705Snp ntuple |= (uint64_t)(F_FT_VLAN_VLD | e->vlan) << tp->vlan_shift; 556237263Snp 557252705Snp if (tp->port_shift >= 0) 558252705Snp ntuple |= (uint64_t)e->lport << tp->port_shift; 559252705Snp 560252705Snp if (tp->protocol_shift >= 0) 561252705Snp ntuple |= (uint64_t)IPPROTO_TCP << tp->protocol_shift; 562252705Snp 563252705Snp if (tp->vnic_shift >= 0) { 564252705Snp uint32_t vf = G_FW_VIID_VIN(viid); 565252705Snp uint32_t pf = G_FW_VIID_PFN(viid); 566252705Snp uint32_t vld = G_FW_VIID_VIVLD(viid); 567252705Snp 568252705Snp ntuple |= (uint64_t)(V_FT_VNID_ID_VF(vf) | V_FT_VNID_ID_PF(pf) | 569252705Snp V_FT_VNID_ID_VLD(vld)) << tp->vnic_shift; 570252705Snp } 571252705Snp 572252705Snp if (is_t4(sc)) 573252705Snp return (htobe32((uint32_t)ntuple)); 574248925Snp else 575248925Snp return (htobe64(V_FILTER_TUPLE(ntuple))); 576237263Snp} 577237263Snp 578245441Snpvoid 579245441Snpset_tcpddp_ulp_mode(struct toepcb *toep) 580245441Snp{ 581245441Snp 582245441Snp toep->ulp_mode = ULP_MODE_TCPDDP; 583245441Snp toep->ddp_flags = DDP_OK; 584245441Snp toep->ddp_score = DDP_LOW_SCORE; 585245441Snp} 586245441Snp 587245935Snpint 588245935Snpnegative_advice(int status) 589245935Snp{ 590245935Snp 591245935Snp return (status == CPL_ERR_RTX_NEG_ADVICE || 592245935Snp status == CPL_ERR_PERSIST_NEG_ADVICE || 593245935Snp status == CPL_ERR_KEEPALV_NEG_ADVICE); 594245935Snp} 595245935Snp 596237263Snpstatic int 597237263Snpalloc_tid_tabs(struct tid_info *t) 598237263Snp{ 599237263Snp size_t size; 600237263Snp unsigned int i; 601237263Snp 602237263Snp size = t->ntids * sizeof(*t->tid_tab) + 603237263Snp t->natids * sizeof(*t->atid_tab) + 604237263Snp t->nstids * sizeof(*t->stid_tab); 605237263Snp 606237263Snp t->tid_tab = malloc(size, M_CXGBE, M_ZERO | M_NOWAIT); 607237263Snp if (t->tid_tab == NULL) 608237263Snp return (ENOMEM); 609237263Snp 610237263Snp mtx_init(&t->atid_lock, "atid lock", NULL, MTX_DEF); 611237263Snp t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids]; 612237263Snp t->afree = t->atid_tab; 613237263Snp t->atids_in_use = 0; 614237263Snp for (i = 1; i < t->natids; i++) 615237263Snp t->atid_tab[i - 1].next = &t->atid_tab[i]; 616237263Snp t->atid_tab[t->natids - 1].next = NULL; 617237263Snp 618237263Snp mtx_init(&t->stid_lock, "stid lock", NULL, MTX_DEF); 619245276Snp t->stid_tab = (struct listen_ctx **)&t->atid_tab[t->natids]; 620237263Snp t->stids_in_use = 0; 621245276Snp TAILQ_INIT(&t->stids); 622245276Snp t->nstids_free_head = t->nstids; 623237263Snp 624237263Snp atomic_store_rel_int(&t->tids_in_use, 0); 625237263Snp 626237263Snp return (0); 627237263Snp} 628237263Snp 629237263Snpstatic void 630237263Snpfree_tid_tabs(struct tid_info *t) 631237263Snp{ 632237263Snp KASSERT(t->tids_in_use == 0, 633237263Snp ("%s: %d tids still in use.", __func__, t->tids_in_use)); 634237263Snp KASSERT(t->atids_in_use == 0, 635237263Snp ("%s: %d atids still in use.", __func__, t->atids_in_use)); 636237263Snp KASSERT(t->stids_in_use == 0, 637237263Snp ("%s: %d tids still in use.", __func__, t->stids_in_use)); 638237263Snp 639237263Snp free(t->tid_tab, M_CXGBE); 640237263Snp t->tid_tab = NULL; 641237263Snp 642237263Snp if (mtx_initialized(&t->atid_lock)) 643237263Snp mtx_destroy(&t->atid_lock); 644237263Snp if (mtx_initialized(&t->stid_lock)) 645237263Snp mtx_destroy(&t->stid_lock); 646237263Snp} 647237263Snp 648245448Snpstatic int 649245448Snpadd_lip(struct adapter *sc, struct in6_addr *lip) 650245448Snp{ 651245448Snp struct fw_clip_cmd c; 652245448Snp 653245448Snp ASSERT_SYNCHRONIZED_OP(sc); 654245448Snp /* mtx_assert(&td->clip_table_lock, MA_OWNED); */ 655245448Snp 656245448Snp memset(&c, 0, sizeof(c)); 657245448Snp c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST | 658245448Snp F_FW_CMD_WRITE); 659245448Snp c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_ALLOC | FW_LEN16(c)); 660245448Snp c.ip_hi = *(uint64_t *)&lip->s6_addr[0]; 661245448Snp c.ip_lo = *(uint64_t *)&lip->s6_addr[8]; 662245448Snp 663249627Snp return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c)); 664245448Snp} 665245448Snp 666245448Snpstatic int 667245448Snpdelete_lip(struct adapter *sc, struct in6_addr *lip) 668245448Snp{ 669245448Snp struct fw_clip_cmd c; 670245448Snp 671245448Snp ASSERT_SYNCHRONIZED_OP(sc); 672245448Snp /* mtx_assert(&td->clip_table_lock, MA_OWNED); */ 673245448Snp 674245448Snp memset(&c, 0, sizeof(c)); 675245448Snp c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST | 676245448Snp F_FW_CMD_READ); 677245448Snp c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_FREE | FW_LEN16(c)); 678245448Snp c.ip_hi = *(uint64_t *)&lip->s6_addr[0]; 679245448Snp c.ip_lo = *(uint64_t *)&lip->s6_addr[8]; 680245448Snp 681249627Snp return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c)); 682245448Snp} 683245448Snp 684245448Snpstatic struct clip_entry * 685245448Snpsearch_lip(struct tom_data *td, struct in6_addr *lip) 686245448Snp{ 687245448Snp struct clip_entry *ce; 688245448Snp 689245448Snp mtx_assert(&td->clip_table_lock, MA_OWNED); 690245448Snp 691245448Snp TAILQ_FOREACH(ce, &td->clip_table, link) { 692245448Snp if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) 693245448Snp return (ce); 694245448Snp } 695245448Snp 696245448Snp return (NULL); 697245448Snp} 698245448Snp 699245448Snpstruct clip_entry * 700245448Snphold_lip(struct tom_data *td, struct in6_addr *lip) 701245448Snp{ 702245448Snp struct clip_entry *ce; 703245448Snp 704245448Snp mtx_lock(&td->clip_table_lock); 705245448Snp ce = search_lip(td, lip); 706245448Snp if (ce != NULL) 707245448Snp ce->refcount++; 708245448Snp mtx_unlock(&td->clip_table_lock); 709245448Snp 710245448Snp return (ce); 711245448Snp} 712245448Snp 713245448Snpvoid 714245448Snprelease_lip(struct tom_data *td, struct clip_entry *ce) 715245448Snp{ 716245448Snp 717245448Snp mtx_lock(&td->clip_table_lock); 718245448Snp KASSERT(search_lip(td, &ce->lip) == ce, 719245448Snp ("%s: CLIP entry %p p not in CLIP table.", __func__, ce)); 720245448Snp KASSERT(ce->refcount > 0, 721245448Snp ("%s: CLIP entry %p has refcount 0", __func__, ce)); 722245448Snp --ce->refcount; 723245448Snp mtx_unlock(&td->clip_table_lock); 724245448Snp} 725245448Snp 726237263Snpstatic void 727245448Snpinit_clip_table(struct adapter *sc, struct tom_data *td) 728245448Snp{ 729245448Snp 730245448Snp ASSERT_SYNCHRONIZED_OP(sc); 731245448Snp 732245448Snp mtx_init(&td->clip_table_lock, "CLIP table lock", NULL, MTX_DEF); 733245448Snp TAILQ_INIT(&td->clip_table); 734249627Snp td->clip_gen = -1; 735245448Snp 736249627Snp update_clip_table(sc, td); 737249627Snp} 738249627Snp 739249627Snpstatic void 740249627Snpupdate_clip(struct adapter *sc, void *arg __unused) 741249627Snp{ 742249627Snp 743249627Snp if (begin_synchronized_op(sc, NULL, HOLD_LOCK, "t4tomuc")) 744249627Snp return; 745249627Snp 746249627Snp if (sc->flags & TOM_INIT_DONE) 747249627Snp update_clip_table(sc, sc->tom_softc); 748249627Snp 749249627Snp end_synchronized_op(sc, LOCK_HELD); 750249627Snp} 751249627Snp 752249627Snpstatic void 753249627Snpt4_clip_task(void *arg, int count) 754249627Snp{ 755249627Snp 756249627Snp t4_iterate(update_clip, NULL); 757249627Snp} 758249627Snp 759249627Snpstatic void 760249627Snpupdate_clip_table(struct adapter *sc, struct tom_data *td) 761249627Snp{ 762249627Snp struct in6_ifaddr *ia; 763249627Snp struct in6_addr *lip, tlip; 764249627Snp struct clip_head stale; 765249627Snp struct clip_entry *ce, *ce_temp; 766249627Snp int rc, gen = atomic_load_acq_int(&in6_ifaddr_gen); 767249627Snp 768249627Snp ASSERT_SYNCHRONIZED_OP(sc); 769249627Snp 770245448Snp IN6_IFADDR_RLOCK(); 771249627Snp mtx_lock(&td->clip_table_lock); 772249627Snp 773249627Snp if (gen == td->clip_gen) 774249627Snp goto done; 775249627Snp 776249627Snp TAILQ_INIT(&stale); 777249627Snp TAILQ_CONCAT(&stale, &td->clip_table, link); 778249627Snp 779245448Snp TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) { 780245448Snp lip = &ia->ia_addr.sin6_addr; 781245448Snp 782245448Snp KASSERT(!IN6_IS_ADDR_MULTICAST(lip), 783245448Snp ("%s: mcast address in in6_ifaddr list", __func__)); 784245448Snp 785245448Snp if (IN6_IS_ADDR_LOOPBACK(lip)) 786245448Snp continue; 787245448Snp if (IN6_IS_SCOPE_EMBED(lip)) { 788245448Snp /* Remove the embedded scope */ 789245448Snp tlip = *lip; 790245448Snp lip = &tlip; 791245448Snp in6_clearscope(lip); 792245448Snp } 793245448Snp /* 794245448Snp * XXX: how to weed out the link local address for the loopback 795245448Snp * interface? It's fe80::1 usually (always?). 796245448Snp */ 797245448Snp 798249627Snp /* 799249627Snp * If it's in the main list then we already know it's not stale. 800249627Snp */ 801249627Snp TAILQ_FOREACH(ce, &td->clip_table, link) { 802249627Snp if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) 803249627Snp goto next; 804249627Snp } 805249627Snp 806249627Snp /* 807249627Snp * If it's in the stale list we should move it to the main list. 808249627Snp */ 809249627Snp TAILQ_FOREACH(ce, &stale, link) { 810249627Snp if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) { 811249627Snp TAILQ_REMOVE(&stale, ce, link); 812245448Snp TAILQ_INSERT_TAIL(&td->clip_table, ce, link); 813249627Snp goto next; 814249627Snp } 815249627Snp } 816249627Snp 817249627Snp /* A new IP6 address; add it to the CLIP table */ 818249627Snp ce = malloc(sizeof(*ce), M_CXGBE, M_NOWAIT); 819249627Snp memcpy(&ce->lip, lip, sizeof(ce->lip)); 820249627Snp ce->refcount = 0; 821249627Snp rc = add_lip(sc, lip); 822249627Snp if (rc == 0) 823249627Snp TAILQ_INSERT_TAIL(&td->clip_table, ce, link); 824249627Snp else { 825249627Snp char ip[INET6_ADDRSTRLEN]; 826249627Snp 827249627Snp inet_ntop(AF_INET6, &ce->lip, &ip[0], sizeof(ip)); 828249627Snp log(LOG_ERR, "%s: could not add %s (%d)\n", 829249627Snp __func__, ip, rc); 830249627Snp free(ce, M_CXGBE); 831249627Snp } 832249627Snpnext: 833249627Snp continue; 834249627Snp } 835249627Snp 836249627Snp /* 837249627Snp * Remove stale addresses (those no longer in V_in6_ifaddrhead) that are 838249627Snp * no longer referenced by the driver. 839249627Snp */ 840249627Snp TAILQ_FOREACH_SAFE(ce, &stale, link, ce_temp) { 841249627Snp if (ce->refcount == 0) { 842249627Snp rc = delete_lip(sc, &ce->lip); 843249627Snp if (rc == 0) { 844249627Snp TAILQ_REMOVE(&stale, ce, link); 845245448Snp free(ce, M_CXGBE); 846249627Snp } else { 847249627Snp char ip[INET6_ADDRSTRLEN]; 848249627Snp 849249627Snp inet_ntop(AF_INET6, &ce->lip, &ip[0], 850249627Snp sizeof(ip)); 851249627Snp log(LOG_ERR, "%s: could not delete %s (%d)\n", 852249627Snp __func__, ip, rc); 853249627Snp } 854245448Snp } 855245448Snp } 856249627Snp /* The ones that are still referenced need to stay in the CLIP table */ 857249627Snp TAILQ_CONCAT(&td->clip_table, &stale, link); 858249627Snp 859249627Snp td->clip_gen = gen; 860249627Snpdone: 861249627Snp mtx_unlock(&td->clip_table_lock); 862245448Snp IN6_IFADDR_RUNLOCK(); 863245448Snp} 864245448Snp 865245448Snpstatic void 866245448Snpdestroy_clip_table(struct adapter *sc, struct tom_data *td) 867245448Snp{ 868245448Snp struct clip_entry *ce, *ce_temp; 869245448Snp 870245448Snp if (mtx_initialized(&td->clip_table_lock)) { 871245448Snp mtx_lock(&td->clip_table_lock); 872245448Snp TAILQ_FOREACH_SAFE(ce, &td->clip_table, link, ce_temp) { 873245448Snp KASSERT(ce->refcount == 0, 874245448Snp ("%s: CLIP entry %p still in use (%d)", __func__, 875245448Snp ce, ce->refcount)); 876245448Snp TAILQ_REMOVE(&td->clip_table, ce, link); 877245448Snp delete_lip(sc, &ce->lip); 878245448Snp free(ce, M_CXGBE); 879245448Snp } 880245448Snp mtx_unlock(&td->clip_table_lock); 881245448Snp mtx_destroy(&td->clip_table_lock); 882245448Snp } 883245448Snp} 884245448Snp 885245448Snpstatic void 886237263Snpfree_tom_data(struct adapter *sc, struct tom_data *td) 887237263Snp{ 888245448Snp 889245448Snp ASSERT_SYNCHRONIZED_OP(sc); 890245448Snp 891237263Snp KASSERT(TAILQ_EMPTY(&td->toep_list), 892237263Snp ("%s: TOE PCB list is not empty.", __func__)); 893237263Snp KASSERT(td->lctx_count == 0, 894237263Snp ("%s: lctx hash table is not empty.", __func__)); 895237263Snp 896237263Snp t4_uninit_l2t_cpl_handlers(sc); 897239344Snp t4_uninit_cpl_io_handlers(sc); 898239344Snp t4_uninit_ddp(sc, td); 899245448Snp destroy_clip_table(sc, td); 900237263Snp 901237263Snp if (td->listen_mask != 0) 902237263Snp hashdestroy(td->listen_hash, M_CXGBE, td->listen_mask); 903237263Snp 904237263Snp if (mtx_initialized(&td->lctx_hash_lock)) 905237263Snp mtx_destroy(&td->lctx_hash_lock); 906237263Snp if (mtx_initialized(&td->toep_list_lock)) 907237263Snp mtx_destroy(&td->toep_list_lock); 908237263Snp 909237263Snp free_tid_tabs(&sc->tids); 910237263Snp free(td, M_CXGBE); 911237263Snp} 912237263Snp 913237263Snp/* 914237263Snp * Ground control to Major TOM 915237263Snp * Commencing countdown, engines on 916237263Snp */ 917237263Snpstatic int 918237263Snpt4_tom_activate(struct adapter *sc) 919237263Snp{ 920237263Snp struct tom_data *td; 921237263Snp struct toedev *tod; 922237263Snp int i, rc; 923237263Snp 924245274Snp ASSERT_SYNCHRONIZED_OP(sc); 925237263Snp 926237263Snp /* per-adapter softc for TOM */ 927237263Snp td = malloc(sizeof(*td), M_CXGBE, M_ZERO | M_NOWAIT); 928237263Snp if (td == NULL) 929237263Snp return (ENOMEM); 930237263Snp 931237263Snp /* List of TOE PCBs and associated lock */ 932237263Snp mtx_init(&td->toep_list_lock, "PCB list lock", NULL, MTX_DEF); 933237263Snp TAILQ_INIT(&td->toep_list); 934237263Snp 935237263Snp /* Listen context */ 936237263Snp mtx_init(&td->lctx_hash_lock, "lctx hash lock", NULL, MTX_DEF); 937237263Snp td->listen_hash = hashinit_flags(LISTEN_HASH_SIZE, M_CXGBE, 938237263Snp &td->listen_mask, HASH_NOWAIT); 939237263Snp 940237263Snp /* TID tables */ 941237263Snp rc = alloc_tid_tabs(&sc->tids); 942237263Snp if (rc != 0) 943237263Snp goto done; 944237263Snp 945245448Snp /* DDP page pods and CPL handlers */ 946239344Snp t4_init_ddp(sc, td); 947239344Snp 948245448Snp /* CLIP table for IPv6 offload */ 949245448Snp init_clip_table(sc, td); 950245448Snp 951237263Snp /* CPL handlers */ 952237263Snp t4_init_connect_cpl_handlers(sc); 953237263Snp t4_init_l2t_cpl_handlers(sc); 954237263Snp t4_init_listen_cpl_handlers(sc); 955237263Snp t4_init_cpl_io_handlers(sc); 956237263Snp 957237263Snp /* toedev ops */ 958237263Snp tod = &td->tod; 959237263Snp init_toedev(tod); 960237263Snp tod->tod_softc = sc; 961237263Snp tod->tod_connect = t4_connect; 962237263Snp tod->tod_listen_start = t4_listen_start; 963237263Snp tod->tod_listen_stop = t4_listen_stop; 964237263Snp tod->tod_rcvd = t4_rcvd; 965237263Snp tod->tod_output = t4_tod_output; 966237263Snp tod->tod_send_rst = t4_send_rst; 967237263Snp tod->tod_send_fin = t4_send_fin; 968237263Snp tod->tod_pcb_detach = t4_pcb_detach; 969237263Snp tod->tod_l2_update = t4_l2_update; 970237263Snp tod->tod_syncache_added = t4_syncache_added; 971237263Snp tod->tod_syncache_removed = t4_syncache_removed; 972237263Snp tod->tod_syncache_respond = t4_syncache_respond; 973237263Snp tod->tod_offload_socket = t4_offload_socket; 974252716Snp tod->tod_ctloutput = t4_ctloutput; 975237263Snp 976237263Snp for_each_port(sc, i) 977237263Snp TOEDEV(sc->port[i]->ifp) = &td->tod; 978237263Snp 979237263Snp sc->tom_softc = td; 980237263Snp sc->flags |= TOM_INIT_DONE; 981237263Snp register_toedev(sc->tom_softc); 982237263Snp 983237263Snpdone: 984237263Snp if (rc != 0) 985237263Snp free_tom_data(sc, td); 986237263Snp return (rc); 987237263Snp} 988237263Snp 989237263Snpstatic int 990237263Snpt4_tom_deactivate(struct adapter *sc) 991237263Snp{ 992237263Snp int rc = 0; 993237263Snp struct tom_data *td = sc->tom_softc; 994237263Snp 995245274Snp ASSERT_SYNCHRONIZED_OP(sc); 996237263Snp 997237263Snp if (td == NULL) 998237263Snp return (0); /* XXX. KASSERT? */ 999237263Snp 1000237263Snp if (sc->offload_map != 0) 1001237263Snp return (EBUSY); /* at least one port has IFCAP_TOE enabled */ 1002237263Snp 1003237263Snp mtx_lock(&td->toep_list_lock); 1004237263Snp if (!TAILQ_EMPTY(&td->toep_list)) 1005237263Snp rc = EBUSY; 1006237263Snp mtx_unlock(&td->toep_list_lock); 1007237263Snp 1008237263Snp mtx_lock(&td->lctx_hash_lock); 1009237263Snp if (td->lctx_count > 0) 1010237263Snp rc = EBUSY; 1011237263Snp mtx_unlock(&td->lctx_hash_lock); 1012237263Snp 1013237263Snp if (rc == 0) { 1014237263Snp unregister_toedev(sc->tom_softc); 1015237263Snp free_tom_data(sc, td); 1016237263Snp sc->tom_softc = NULL; 1017237263Snp sc->flags &= ~TOM_INIT_DONE; 1018237263Snp } 1019237263Snp 1020237263Snp return (rc); 1021237263Snp} 1022237263Snp 1023249627Snpstatic void 1024249627Snpt4_tom_ifaddr_event(void *arg __unused, struct ifnet *ifp) 1025249627Snp{ 1026249627Snp 1027249627Snp atomic_add_rel_int(&in6_ifaddr_gen, 1); 1028249627Snp taskqueue_enqueue_timeout(taskqueue_thread, &clip_task, -hz / 4); 1029249627Snp} 1030249627Snp 1031237263Snpstatic int 1032237263Snpt4_tom_mod_load(void) 1033237263Snp{ 1034237263Snp int rc; 1035245441Snp struct protosw *tcp_protosw, *tcp6_protosw; 1036237263Snp 1037239344Snp tcp_protosw = pffindproto(PF_INET, IPPROTO_TCP, SOCK_STREAM); 1038239344Snp if (tcp_protosw == NULL) 1039239344Snp return (ENOPROTOOPT); 1040239344Snp bcopy(tcp_protosw, &ddp_protosw, sizeof(ddp_protosw)); 1041239344Snp bcopy(tcp_protosw->pr_usrreqs, &ddp_usrreqs, sizeof(ddp_usrreqs)); 1042239344Snp ddp_usrreqs.pru_soreceive = t4_soreceive_ddp; 1043239344Snp ddp_protosw.pr_usrreqs = &ddp_usrreqs; 1044239344Snp 1045245441Snp tcp6_protosw = pffindproto(PF_INET6, IPPROTO_TCP, SOCK_STREAM); 1046245441Snp if (tcp6_protosw == NULL) 1047245441Snp return (ENOPROTOOPT); 1048245441Snp bcopy(tcp6_protosw, &ddp6_protosw, sizeof(ddp6_protosw)); 1049245441Snp bcopy(tcp6_protosw->pr_usrreqs, &ddp6_usrreqs, sizeof(ddp6_usrreqs)); 1050245441Snp ddp6_usrreqs.pru_soreceive = t4_soreceive_ddp; 1051245441Snp ddp6_protosw.pr_usrreqs = &ddp6_usrreqs; 1052245441Snp 1053249627Snp TIMEOUT_TASK_INIT(taskqueue_thread, &clip_task, 0, t4_clip_task, NULL); 1054249627Snp ifaddr_evhandler = EVENTHANDLER_REGISTER(ifaddr_event, 1055249627Snp t4_tom_ifaddr_event, NULL, EVENTHANDLER_PRI_ANY); 1056249627Snp 1057237263Snp rc = t4_register_uld(&tom_uld_info); 1058237263Snp if (rc != 0) 1059237263Snp t4_tom_mod_unload(); 1060237263Snp 1061237263Snp return (rc); 1062237263Snp} 1063237263Snp 1064237263Snpstatic void 1065237263Snptom_uninit(struct adapter *sc, void *arg __unused) 1066237263Snp{ 1067255006Snp if (begin_synchronized_op(sc, NULL, SLEEP_OK | INTR_OK, "t4tomun")) 1068245274Snp return; 1069245274Snp 1070237263Snp /* Try to free resources (works only if no port has IFCAP_TOE) */ 1071237263Snp if (sc->flags & TOM_INIT_DONE) 1072237263Snp t4_deactivate_uld(sc, ULD_TOM); 1073245274Snp 1074255006Snp end_synchronized_op(sc, 0); 1075237263Snp} 1076237263Snp 1077237263Snpstatic int 1078237263Snpt4_tom_mod_unload(void) 1079237263Snp{ 1080237263Snp t4_iterate(tom_uninit, NULL); 1081237263Snp 1082237263Snp if (t4_unregister_uld(&tom_uld_info) == EBUSY) 1083237263Snp return (EBUSY); 1084237263Snp 1085249627Snp if (ifaddr_evhandler) { 1086249627Snp EVENTHANDLER_DEREGISTER(ifaddr_event, ifaddr_evhandler); 1087249627Snp taskqueue_cancel_timeout(taskqueue_thread, &clip_task, NULL); 1088249627Snp } 1089249627Snp 1090237263Snp return (0); 1091237263Snp} 1092237263Snp#endif /* TCP_OFFLOAD */ 1093237263Snp 1094237263Snpstatic int 1095237263Snpt4_tom_modevent(module_t mod, int cmd, void *arg) 1096237263Snp{ 1097237263Snp int rc = 0; 1098237263Snp 1099237263Snp#ifdef TCP_OFFLOAD 1100237263Snp switch (cmd) { 1101237263Snp case MOD_LOAD: 1102237263Snp rc = t4_tom_mod_load(); 1103237263Snp break; 1104237263Snp 1105237263Snp case MOD_UNLOAD: 1106237263Snp rc = t4_tom_mod_unload(); 1107237263Snp break; 1108237263Snp 1109237263Snp default: 1110237263Snp rc = EINVAL; 1111237263Snp } 1112237263Snp#else 1113237263Snp printf("t4_tom: compiled without TCP_OFFLOAD support.\n"); 1114237263Snp rc = EOPNOTSUPP; 1115237263Snp#endif 1116237263Snp return (rc); 1117237263Snp} 1118237263Snp 1119237263Snpstatic moduledata_t t4_tom_moddata= { 1120237263Snp "t4_tom", 1121237263Snp t4_tom_modevent, 1122241394Skevlo 0 1123237263Snp}; 1124237263Snp 1125237263SnpMODULE_VERSION(t4_tom, 1); 1126237263SnpMODULE_DEPEND(t4_tom, toecore, 1, 1, 1); 1127237263SnpMODULE_DEPEND(t4_tom, t4nex, 1, 1, 1); 1128237263SnpDECLARE_MODULE(t4_tom, t4_tom_moddata, SI_SUB_EXEC, SI_ORDER_ANY); 1129