1 /*- 2 * Copyright (c) 2021,2022 NVIDIA CORPORATION & AFFILIATES. ALL RIGHTS RESERVED. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26 #include "opt_inet.h" 27 #include "opt_inet6.h" 28 #include "opt_ipsec.h" 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/ck.h> 33 #include <sys/eventhandler.h> 34 #include <sys/kernel.h> 35 #include <sys/mbuf.h> 36 #include <sys/pctrie.h> 37 #include <sys/proc.h> 38 #include <sys/socket.h> 39 #include <sys/sysctl.h> 40 #include <sys/protosw.h> 41 #include <sys/stdarg.h> 42 #include <sys/taskqueue.h> 43 44 #include <net/if.h> 45 #include <net/if_var.h> 46 #include <net/if_private.h> 47 #include <net/vnet.h> 48 #include <netinet/in.h> 49 #include <netinet/ip.h> 50 #include <netinet/ip_var.h> 51 #include <netinet/ip6.h> 52 #include <netinet6/ip6_var.h> 53 #include <netinet/in_pcb.h> 54 #include <netinet/tcp_var.h> 55 56 #include <netipsec/key.h> 57 #include <netipsec/keydb.h> 58 #include <netipsec/key_debug.h> 59 #include <netipsec/xform.h> 60 #include <netipsec/ipsec.h> 61 #include <netipsec/ipsec_offload.h> 62 #include <netipsec/ah_var.h> 63 #include <netipsec/esp.h> 64 #include <netipsec/esp_var.h> 65 #include <netipsec/ipcomp_var.h> 66 67 #ifdef IPSEC_OFFLOAD 68 69 static struct mtx ipsec_accel_sav_tmp; 70 static struct unrhdr *drv_spi_unr; 71 static struct mtx ipsec_accel_cnt_lock; 72 static struct taskqueue *ipsec_accel_tq; 73 74 struct ipsec_accel_install_newkey_tq { 75 struct secasvar *sav; 76 struct vnet *install_vnet; 77 struct task install_task; 78 }; 79 80 struct ipsec_accel_forget_tq { 81 struct vnet *forget_vnet; 82 struct task forget_task; 83 struct secasvar *sav; 84 }; 85 86 struct ifp_handle_sav { 87 CK_LIST_ENTRY(ifp_handle_sav) sav_link; 88 CK_LIST_ENTRY(ifp_handle_sav) sav_allh_link; 89 struct secasvar *sav; 90 struct ifnet *ifp; 91 void *ifdata; 92 uint64_t drv_spi; 93 uint32_t flags; 94 size_t hdr_ext_size; 95 uint64_t cnt_octets; 96 uint64_t cnt_allocs; 97 struct xform_history xfh; 98 }; 99 100 #define IFP_HS_HANDLED 0x00000001 101 #define IFP_HS_REJECTED 0x00000002 102 #define IFP_HS_MARKER 0x00000010 103 104 static CK_LIST_HEAD(, ifp_handle_sav) ipsec_accel_all_sav_handles; 105 106 struct ifp_handle_sp { 107 CK_LIST_ENTRY(ifp_handle_sp) sp_link; 108 CK_LIST_ENTRY(ifp_handle_sp) sp_allh_link; 109 struct secpolicy *sp; 110 struct ifnet *ifp; 111 void *ifdata; 112 uint32_t flags; 113 }; 114 115 #define IFP_HP_HANDLED 0x00000001 116 #define IFP_HP_REJECTED 0x00000002 117 #define IFP_HP_MARKER 0x00000004 118 119 static CK_LIST_HEAD(, ifp_handle_sp) ipsec_accel_all_sp_handles; 120 121 static void * 122 drvspi_sa_trie_alloc(struct pctrie *ptree) 123 { 124 void *res; 125 126 res = malloc(pctrie_node_size(), M_IPSEC_MISC, M_ZERO | M_NOWAIT); 127 if (res != NULL) 128 pctrie_zone_init(res, 0, 0); 129 return (res); 130 } 131 132 static void 133 drvspi_sa_trie_free(struct pctrie *ptree, void *node) 134 { 135 free(node, M_IPSEC_MISC); 136 } 137 138 PCTRIE_DEFINE(DRVSPI_SA, ifp_handle_sav, drv_spi, 139 drvspi_sa_trie_alloc, drvspi_sa_trie_free); 140 static struct pctrie drv_spi_pctrie; 141 142 static eventhandler_tag ipsec_accel_ifdetach_event_tag; 143 144 static void ipsec_accel_sa_newkey_impl(struct secasvar *sav); 145 static int ipsec_accel_handle_sav(struct secasvar *sav, struct ifnet *ifp, 146 u_int drv_spi, void *priv, uint32_t flags, struct ifp_handle_sav **ires); 147 static void ipsec_accel_forget_sav_clear(struct secasvar *sav); 148 static struct ifp_handle_sav *ipsec_accel_is_accel_sav_ptr(struct secasvar *sav, 149 struct ifnet *ifp); 150 static int ipsec_accel_sa_lifetime_op_impl(struct secasvar *sav, 151 struct seclifetime *lft_c, if_t ifp, enum IF_SA_CNT_WHICH op, 152 struct rm_priotracker *sahtree_trackerp); 153 static void ipsec_accel_sa_recordxfer(struct secasvar *sav, struct mbuf *m); 154 static void ipsec_accel_sync_imp(void); 155 static bool ipsec_accel_is_accel_sav_impl(struct secasvar *sav); 156 static struct mbuf *ipsec_accel_key_setaccelif_impl(struct secasvar *sav); 157 static void ipsec_accel_on_ifdown_impl(struct ifnet *ifp); 158 static void ipsec_accel_drv_sa_lifetime_update_impl(struct secasvar *sav, 159 if_t ifp, u_int drv_spi, uint64_t octets, uint64_t allocs); 160 static int ipsec_accel_drv_sa_lifetime_fetch_impl(struct secasvar *sav, 161 if_t ifp, u_int drv_spi, uint64_t *octets, uint64_t *allocs); 162 static void ipsec_accel_ifdetach_event(void *arg, struct ifnet *ifp); 163 static bool ipsec_accel_fill_xh_impl(if_t ifp, uint32_t drv_spi, 164 struct xform_history *xh); 165 166 static void 167 ipsec_accel_init(void *arg) 168 { 169 mtx_init(&ipsec_accel_sav_tmp, "ipasat", MTX_DEF, 0); 170 mtx_init(&ipsec_accel_cnt_lock, "ipascn", MTX_DEF, 0); 171 drv_spi_unr = new_unrhdr(IPSEC_ACCEL_DRV_SPI_MIN, 172 IPSEC_ACCEL_DRV_SPI_MAX, &ipsec_accel_sav_tmp); 173 ipsec_accel_tq = taskqueue_create("ipsec_offload", M_WAITOK, 174 taskqueue_thread_enqueue, &ipsec_accel_tq); 175 (void)taskqueue_start_threads(&ipsec_accel_tq, 176 1 /* Must be single-threaded */, PWAIT, 177 "ipsec_offload"); 178 ipsec_accel_sa_newkey_p = ipsec_accel_sa_newkey_impl; 179 ipsec_accel_forget_sav_p = ipsec_accel_forget_sav_impl; 180 ipsec_accel_spdadd_p = ipsec_accel_spdadd_impl; 181 ipsec_accel_spddel_p = ipsec_accel_spddel_impl; 182 ipsec_accel_sa_lifetime_op_p = ipsec_accel_sa_lifetime_op_impl; 183 ipsec_accel_sync_p = ipsec_accel_sync_imp; 184 ipsec_accel_is_accel_sav_p = ipsec_accel_is_accel_sav_impl; 185 ipsec_accel_key_setaccelif_p = ipsec_accel_key_setaccelif_impl; 186 ipsec_accel_on_ifdown_p = ipsec_accel_on_ifdown_impl; 187 ipsec_accel_drv_sa_lifetime_update_p = 188 ipsec_accel_drv_sa_lifetime_update_impl; 189 ipsec_accel_drv_sa_lifetime_fetch_p = 190 ipsec_accel_drv_sa_lifetime_fetch_impl; 191 ipsec_accel_fill_xh_p = ipsec_accel_fill_xh_impl; 192 pctrie_init(&drv_spi_pctrie); 193 ipsec_accel_ifdetach_event_tag = EVENTHANDLER_REGISTER( 194 ifnet_departure_event, ipsec_accel_ifdetach_event, NULL, 195 EVENTHANDLER_PRI_ANY); 196 } 197 SYSINIT(ipsec_accel_init, SI_SUB_VNET_DONE, SI_ORDER_ANY, 198 ipsec_accel_init, NULL); 199 200 static void 201 ipsec_accel_fini(void *arg) 202 { 203 EVENTHANDLER_DEREGISTER(ifnet_departure_event, 204 ipsec_accel_ifdetach_event_tag); 205 ipsec_accel_sa_newkey_p = NULL; 206 ipsec_accel_forget_sav_p = NULL; 207 ipsec_accel_spdadd_p = NULL; 208 ipsec_accel_spddel_p = NULL; 209 ipsec_accel_sa_lifetime_op_p = NULL; 210 ipsec_accel_sync_p = NULL; 211 ipsec_accel_is_accel_sav_p = NULL; 212 ipsec_accel_key_setaccelif_p = NULL; 213 ipsec_accel_on_ifdown_p = NULL; 214 ipsec_accel_drv_sa_lifetime_update_p = NULL; 215 ipsec_accel_drv_sa_lifetime_fetch_p = NULL; 216 ipsec_accel_fill_xh_p = NULL; 217 ipsec_accel_sync_imp(); 218 clean_unrhdr(drv_spi_unr); /* avoid panic, should go later */ 219 clear_unrhdr(drv_spi_unr); 220 delete_unrhdr(drv_spi_unr); 221 taskqueue_drain_all(ipsec_accel_tq); 222 taskqueue_free(ipsec_accel_tq); 223 mtx_destroy(&ipsec_accel_sav_tmp); 224 mtx_destroy(&ipsec_accel_cnt_lock); 225 } 226 SYSUNINIT(ipsec_accel_fini, SI_SUB_VNET_DONE, SI_ORDER_ANY, 227 ipsec_accel_fini, NULL); 228 229 SYSCTL_NODE(_net_inet_ipsec, OID_AUTO, offload, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 230 ""); 231 232 static bool ipsec_offload_verbose = false; 233 SYSCTL_BOOL(_net_inet_ipsec_offload, OID_AUTO, verbose, CTLFLAG_RW, 234 &ipsec_offload_verbose, 0, 235 "Verbose SA/SP offload install and deinstall"); 236 237 static void 238 dprintf(const char *fmt, ...) 239 { 240 va_list ap; 241 242 if (!ipsec_offload_verbose) 243 return; 244 245 va_start(ap, fmt); 246 vprintf(fmt, ap); 247 va_end(ap); 248 } 249 250 static void 251 ipsec_accel_alloc_forget_tq(struct secasvar *sav) 252 { 253 void *ftq; 254 255 if (sav->accel_forget_tq != 0) 256 return; 257 258 ftq = malloc(sizeof(struct ipsec_accel_forget_tq), M_TEMP, M_WAITOK); 259 if (!atomic_cmpset_ptr(&sav->accel_forget_tq, 0, (uintptr_t)ftq)) 260 free(ftq, M_TEMP); 261 } 262 263 static bool 264 ipsec_accel_sa_install_match(if_t ifp, void *arg) 265 { 266 if ((ifp->if_capenable2 & IFCAP2_BIT(IFCAP2_IPSEC_OFFLOAD)) == 0) 267 return (false); 268 if (ifp->if_ipsec_accel_m->if_sa_newkey == NULL) { 269 dprintf("driver bug ifp %s if_sa_newkey NULL\n", 270 if_name(ifp)); 271 return (false); 272 } 273 return (true); 274 } 275 276 static int 277 ipsec_accel_sa_newkey_cb(if_t ifp, void *arg) 278 { 279 struct ipsec_accel_install_newkey_tq *tq; 280 void *priv; 281 u_int drv_spi; 282 int error; 283 284 tq = arg; 285 286 dprintf("ipsec_accel_sa_newkey_act: ifp %s h %p spi %#x " 287 "flags %#x seq %d\n", 288 if_name(ifp), ifp->if_ipsec_accel_m->if_sa_newkey, 289 be32toh(tq->sav->spi), tq->sav->flags, tq->sav->seq); 290 priv = NULL; 291 drv_spi = alloc_unr(drv_spi_unr); 292 if (tq->sav->accel_ifname != NULL && 293 strcmp(tq->sav->accel_ifname, if_name(ifp)) != 0) { 294 error = ipsec_accel_handle_sav(tq->sav, 295 ifp, drv_spi, priv, IFP_HS_REJECTED, NULL); 296 goto out; 297 } 298 if (drv_spi == -1) { 299 /* XXXKIB */ 300 dprintf("ipsec_accel_sa_install_newkey: cannot alloc " 301 "drv_spi if %s spi %#x\n", if_name(ifp), 302 be32toh(tq->sav->spi)); 303 return (ENOMEM); 304 } 305 error = ifp->if_ipsec_accel_m->if_sa_newkey(ifp, tq->sav, 306 drv_spi, &priv); 307 if (error != 0) { 308 if (error == EOPNOTSUPP) { 309 dprintf("ipsec_accel_sa_newkey: driver " 310 "refused sa if %s spi %#x\n", 311 if_name(ifp), be32toh(tq->sav->spi)); 312 error = ipsec_accel_handle_sav(tq->sav, 313 ifp, drv_spi, priv, IFP_HS_REJECTED, NULL); 314 /* XXXKIB */ 315 } else { 316 dprintf("ipsec_accel_sa_newkey: driver " 317 "error %d if %s spi %#x\n", 318 error, if_name(ifp), be32toh(tq->sav->spi)); 319 /* XXXKIB */ 320 } 321 } else { 322 error = ipsec_accel_handle_sav(tq->sav, ifp, 323 drv_spi, priv, IFP_HS_HANDLED, NULL); 324 if (error != 0) { 325 /* XXXKIB */ 326 dprintf("ipsec_accel_sa_newkey: handle_sav " 327 "err %d if %s spi %#x\n", error, 328 if_name(ifp), be32toh(tq->sav->spi)); 329 } 330 } 331 out: 332 return (error); 333 } 334 335 static void 336 ipsec_accel_sa_newkey_act(void *context, int pending) 337 { 338 struct ipsec_accel_install_newkey_tq *tq; 339 void *tqf; 340 struct secasvar *sav; 341 342 tq = context; 343 tqf = NULL; 344 sav = tq->sav; 345 CURVNET_SET(tq->install_vnet); 346 mtx_lock(&ipsec_accel_sav_tmp); 347 if ((sav->accel_flags & (SADB_KEY_ACCEL_INST | 348 SADB_KEY_ACCEL_DEINST)) == 0 && 349 sav->state == SADB_SASTATE_MATURE) { 350 sav->accel_flags |= SADB_KEY_ACCEL_INST; 351 mtx_unlock(&ipsec_accel_sav_tmp); 352 if_foreach_sleep(ipsec_accel_sa_install_match, context, 353 ipsec_accel_sa_newkey_cb, context); 354 ipsec_accel_alloc_forget_tq(sav); 355 mtx_lock(&ipsec_accel_sav_tmp); 356 357 /* 358 * If ipsec_accel_forget_sav() raced with us and set 359 * the flag, do its work. Its task cannot execute in 360 * parallel since ipsec_accel taskqueue is single-threaded. 361 */ 362 if ((sav->accel_flags & SADB_KEY_ACCEL_DEINST) != 0) { 363 tqf = (void *)sav->accel_forget_tq; 364 sav->accel_forget_tq = 0; 365 ipsec_accel_forget_sav_clear(sav); 366 } 367 } 368 mtx_unlock(&ipsec_accel_sav_tmp); 369 key_freesav(&tq->sav); 370 CURVNET_RESTORE(); 371 free(tq, M_TEMP); 372 free(tqf, M_TEMP); 373 } 374 375 static void 376 ipsec_accel_sa_newkey_impl(struct secasvar *sav) 377 { 378 struct ipsec_accel_install_newkey_tq *tq; 379 380 if ((sav->accel_flags & (SADB_KEY_ACCEL_INST | 381 SADB_KEY_ACCEL_DEINST)) != 0) 382 return; 383 384 dprintf( 385 "ipsec_accel_sa_install_newkey: spi %#x flags %#x seq %d\n", 386 be32toh(sav->spi), sav->flags, sav->seq); 387 388 tq = malloc(sizeof(*tq), M_TEMP, M_NOWAIT); 389 if (tq == NULL) { 390 dprintf("ipsec_accel_sa_install_newkey: no memory for tq, " 391 "spi %#x\n", be32toh(sav->spi)); 392 /* XXXKIB */ 393 return; 394 } 395 396 refcount_acquire(&sav->refcnt); 397 398 TASK_INIT(&tq->install_task, 0, ipsec_accel_sa_newkey_act, tq); 399 tq->sav = sav; 400 tq->install_vnet = curthread->td_vnet; 401 taskqueue_enqueue(ipsec_accel_tq, &tq->install_task); 402 } 403 404 static int 405 ipsec_accel_handle_sav(struct secasvar *sav, struct ifnet *ifp, 406 u_int drv_spi, void *priv, uint32_t flags, struct ifp_handle_sav **ires) 407 { 408 struct ifp_handle_sav *ihs, *i; 409 int error; 410 411 MPASS(__bitcount(flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) == 1); 412 413 ihs = malloc(sizeof(*ihs), M_IPSEC_MISC, M_WAITOK | M_ZERO); 414 ihs->ifp = ifp; 415 ihs->sav = sav; 416 ihs->drv_spi = drv_spi; 417 ihs->ifdata = priv; 418 ihs->flags = flags; 419 ihs->hdr_ext_size = esp_hdrsiz(sav); 420 memcpy(&ihs->xfh.dst, &sav->sah->saidx.dst, sizeof(ihs->xfh.dst)); 421 ihs->xfh.spi = sav->spi; 422 ihs->xfh.proto = sav->sah->saidx.proto; 423 ihs->xfh.mode = sav->sah->saidx.mode; 424 mtx_lock(&ipsec_accel_sav_tmp); 425 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 426 if (i->ifp == ifp) { 427 error = EALREADY; 428 goto errout; 429 } 430 } 431 error = DRVSPI_SA_PCTRIE_INSERT(&drv_spi_pctrie, ihs); 432 if (error != 0) 433 goto errout; 434 if_ref(ihs->ifp); 435 CK_LIST_INSERT_HEAD(&sav->accel_ifps, ihs, sav_link); 436 CK_LIST_INSERT_HEAD(&ipsec_accel_all_sav_handles, ihs, sav_allh_link); 437 mtx_unlock(&ipsec_accel_sav_tmp); 438 if (ires != NULL) 439 *ires = ihs; 440 return (0); 441 errout: 442 mtx_unlock(&ipsec_accel_sav_tmp); 443 free(ihs, M_IPSEC_MISC); 444 if (ires != NULL) 445 *ires = NULL; 446 return (error); 447 } 448 449 static void 450 ipsec_accel_forget_handle_sav(struct ifp_handle_sav *i, bool freesav) 451 { 452 struct ifnet *ifp; 453 struct secasvar *sav; 454 455 mtx_assert(&ipsec_accel_sav_tmp, MA_OWNED); 456 457 CK_LIST_REMOVE(i, sav_link); 458 CK_LIST_REMOVE(i, sav_allh_link); 459 DRVSPI_SA_PCTRIE_REMOVE(&drv_spi_pctrie, i->drv_spi); 460 mtx_unlock(&ipsec_accel_sav_tmp); 461 NET_EPOCH_WAIT(); 462 ifp = i->ifp; 463 sav = i->sav; 464 if ((i->flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) == 465 IFP_HS_HANDLED) { 466 dprintf("sa deinstall %s %p spi %#x ifl %#x\n", 467 if_name(ifp), sav, be32toh(sav->spi), i->flags); 468 ifp->if_ipsec_accel_m->if_sa_deinstall(ifp, 469 i->drv_spi, i->ifdata); 470 } 471 if_rele(ifp); 472 free_unr(drv_spi_unr, i->drv_spi); 473 free(i, M_IPSEC_MISC); 474 if (freesav) 475 key_freesav(&sav); 476 mtx_lock(&ipsec_accel_sav_tmp); 477 } 478 479 static void 480 ipsec_accel_forget_sav_clear(struct secasvar *sav) 481 { 482 struct ifp_handle_sav *i; 483 484 for (;;) { 485 i = CK_LIST_FIRST(&sav->accel_ifps); 486 if (i == NULL) 487 break; 488 ipsec_accel_forget_handle_sav(i, false); 489 } 490 } 491 492 static void 493 ipsec_accel_forget_sav_act(void *arg, int pending) 494 { 495 struct ipsec_accel_forget_tq *tq; 496 struct secasvar *sav; 497 498 tq = arg; 499 sav = tq->sav; 500 CURVNET_SET(tq->forget_vnet); 501 mtx_lock(&ipsec_accel_sav_tmp); 502 ipsec_accel_forget_sav_clear(sav); 503 mtx_unlock(&ipsec_accel_sav_tmp); 504 key_freesav(&sav); 505 CURVNET_RESTORE(); 506 free(tq, M_TEMP); 507 } 508 509 void 510 ipsec_accel_forget_sav_impl(struct secasvar *sav) 511 { 512 struct ipsec_accel_forget_tq *tq; 513 514 mtx_lock(&ipsec_accel_sav_tmp); 515 sav->accel_flags |= SADB_KEY_ACCEL_DEINST; 516 tq = (void *)atomic_load_ptr(&sav->accel_forget_tq); 517 if (tq == NULL || !atomic_cmpset_ptr(&sav->accel_forget_tq, 518 (uintptr_t)tq, 0)) { 519 mtx_unlock(&ipsec_accel_sav_tmp); 520 return; 521 } 522 mtx_unlock(&ipsec_accel_sav_tmp); 523 524 refcount_acquire(&sav->refcnt); 525 TASK_INIT(&tq->forget_task, 0, ipsec_accel_forget_sav_act, tq); 526 tq->forget_vnet = curthread->td_vnet; 527 tq->sav = sav; 528 taskqueue_enqueue(ipsec_accel_tq, &tq->forget_task); 529 } 530 531 static void 532 ipsec_accel_on_ifdown_sav(struct ifnet *ifp) 533 { 534 struct ifp_handle_sav *i, *marker; 535 536 marker = malloc(sizeof(*marker), M_IPSEC_MISC, M_WAITOK | M_ZERO); 537 marker->flags = IFP_HS_MARKER; 538 539 mtx_lock(&ipsec_accel_sav_tmp); 540 CK_LIST_INSERT_HEAD(&ipsec_accel_all_sav_handles, marker, 541 sav_allh_link); 542 for (;;) { 543 i = CK_LIST_NEXT(marker, sav_allh_link); 544 if (i == NULL) 545 break; 546 CK_LIST_REMOVE(marker, sav_allh_link); 547 CK_LIST_INSERT_AFTER(i, marker, sav_allh_link); 548 if (i->ifp == ifp) { 549 refcount_acquire(&i->sav->refcnt); /* XXXKIB wrap ? */ 550 ipsec_accel_forget_handle_sav(i, true); 551 } 552 } 553 CK_LIST_REMOVE(marker, sav_allh_link); 554 mtx_unlock(&ipsec_accel_sav_tmp); 555 free(marker, M_IPSEC_MISC); 556 } 557 558 static struct ifp_handle_sav * 559 ipsec_accel_is_accel_sav_ptr_raw(struct secasvar *sav, struct ifnet *ifp) 560 { 561 struct ifp_handle_sav *i; 562 563 if ((ifp->if_capenable2 & IFCAP2_BIT(IFCAP2_IPSEC_OFFLOAD)) == 0) 564 return (NULL); 565 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 566 if (i->ifp == ifp) 567 return (i); 568 } 569 return (NULL); 570 } 571 572 static struct ifp_handle_sav * 573 ipsec_accel_is_accel_sav_ptr(struct secasvar *sav, struct ifnet *ifp) 574 { 575 NET_EPOCH_ASSERT(); 576 return (ipsec_accel_is_accel_sav_ptr_raw(sav, ifp)); 577 } 578 579 static bool 580 ipsec_accel_is_accel_sav_impl(struct secasvar *sav) 581 { 582 return (!CK_LIST_EMPTY(&sav->accel_ifps)); 583 } 584 585 static struct secasvar * 586 ipsec_accel_drvspi_to_sa(u_int drv_spi) 587 { 588 struct ifp_handle_sav *i; 589 590 i = DRVSPI_SA_PCTRIE_LOOKUP(&drv_spi_pctrie, drv_spi); 591 if (i == NULL) 592 return (NULL); 593 return (i->sav); 594 } 595 596 static struct ifp_handle_sp * 597 ipsec_accel_find_accel_sp(struct secpolicy *sp, if_t ifp) 598 { 599 struct ifp_handle_sp *i; 600 601 CK_LIST_FOREACH(i, &sp->accel_ifps, sp_link) { 602 if (i->ifp == ifp) 603 return (i); 604 } 605 return (NULL); 606 } 607 608 static bool 609 ipsec_accel_is_accel_sp(struct secpolicy *sp, if_t ifp) 610 { 611 return (ipsec_accel_find_accel_sp(sp, ifp) != NULL); 612 } 613 614 static int 615 ipsec_accel_remember_sp(struct secpolicy *sp, if_t ifp, 616 struct ifp_handle_sp **ip) 617 { 618 struct ifp_handle_sp *i; 619 620 i = malloc(sizeof(*i), M_IPSEC_MISC, M_WAITOK | M_ZERO); 621 i->sp = sp; 622 i->ifp = ifp; 623 if_ref(ifp); 624 i->flags = IFP_HP_HANDLED; 625 mtx_lock(&ipsec_accel_sav_tmp); 626 CK_LIST_INSERT_HEAD(&sp->accel_ifps, i, sp_link); 627 CK_LIST_INSERT_HEAD(&ipsec_accel_all_sp_handles, i, sp_allh_link); 628 mtx_unlock(&ipsec_accel_sav_tmp); 629 *ip = i; 630 return (0); 631 } 632 633 static bool 634 ipsec_accel_spdadd_match(if_t ifp, void *arg) 635 { 636 struct secpolicy *sp; 637 638 if ((ifp->if_capenable2 & IFCAP2_BIT(IFCAP2_IPSEC_OFFLOAD)) == 0 || 639 ifp->if_ipsec_accel_m->if_spdadd == NULL) 640 return (false); 641 sp = arg; 642 if (sp->accel_ifname != NULL && 643 strcmp(sp->accel_ifname, if_name(ifp)) != 0) 644 return (false); 645 if (ipsec_accel_is_accel_sp(sp, ifp)) 646 return (false); 647 return (true); 648 } 649 650 static int 651 ipsec_accel_spdadd_cb(if_t ifp, void *arg) 652 { 653 struct secpolicy *sp; 654 struct inpcb *inp; 655 struct ifp_handle_sp *i; 656 int error; 657 658 sp = arg; 659 inp = sp->ipsec_accel_add_sp_inp; 660 dprintf("ipsec_accel_spdadd_cb: ifp %s m %p sp %p inp %p\n", 661 if_name(ifp), ifp->if_ipsec_accel_m->if_spdadd, sp, inp); 662 error = ipsec_accel_remember_sp(sp, ifp, &i); 663 if (error != 0) { 664 dprintf("ipsec_accel_spdadd: %s if_spdadd %p remember res %d\n", 665 if_name(ifp), sp, error); 666 return (error); 667 } 668 error = ifp->if_ipsec_accel_m->if_spdadd(ifp, sp, inp, &i->ifdata); 669 if (error != 0) { 670 i->flags |= IFP_HP_REJECTED; 671 dprintf("ipsec_accel_spdadd: %s if_spdadd %p res %d\n", 672 if_name(ifp), sp, error); 673 } 674 return (error); 675 } 676 677 static void 678 ipsec_accel_spdadd_act(void *arg, int pending) 679 { 680 struct secpolicy *sp; 681 struct inpcb *inp; 682 683 sp = arg; 684 CURVNET_SET(sp->accel_add_tq.adddel_vnet); 685 if_foreach_sleep(ipsec_accel_spdadd_match, arg, 686 ipsec_accel_spdadd_cb, arg); 687 inp = sp->ipsec_accel_add_sp_inp; 688 if (inp != NULL) { 689 INP_WLOCK(inp); 690 if (!in_pcbrele_wlocked(inp)) 691 INP_WUNLOCK(inp); 692 sp->ipsec_accel_add_sp_inp = NULL; 693 } 694 CURVNET_RESTORE(); 695 key_freesp(&sp); 696 } 697 698 void 699 ipsec_accel_spdadd_impl(struct secpolicy *sp, struct inpcb *inp) 700 { 701 struct ipsec_accel_adddel_sp_tq *tq; 702 703 if (sp == NULL) 704 return; 705 if (sp->tcount == 0 && inp == NULL) 706 return; 707 tq = &sp->accel_add_tq; 708 if (atomic_cmpset_int(&tq->adddel_scheduled, 0, 1) == 0) 709 return; 710 tq->adddel_vnet = curthread->td_vnet; 711 sp->ipsec_accel_add_sp_inp = inp; 712 if (inp != NULL) 713 in_pcbref(inp); 714 TASK_INIT(&tq->adddel_task, 0, ipsec_accel_spdadd_act, sp); 715 key_addref(sp); 716 taskqueue_enqueue(ipsec_accel_tq, &tq->adddel_task); 717 } 718 719 static void 720 ipsec_accel_spddel_act(void *arg, int pending) 721 { 722 struct ifp_handle_sp *i; 723 struct secpolicy *sp; 724 int error; 725 726 sp = arg; 727 CURVNET_SET(sp->accel_del_tq.adddel_vnet); 728 mtx_lock(&ipsec_accel_sav_tmp); 729 for (;;) { 730 i = CK_LIST_FIRST(&sp->accel_ifps); 731 if (i == NULL) 732 break; 733 CK_LIST_REMOVE(i, sp_link); 734 CK_LIST_REMOVE(i, sp_allh_link); 735 mtx_unlock(&ipsec_accel_sav_tmp); 736 NET_EPOCH_WAIT(); 737 if ((i->flags & (IFP_HP_HANDLED | IFP_HP_REJECTED)) == 738 IFP_HP_HANDLED) { 739 dprintf("spd deinstall %s %p\n", if_name(i->ifp), sp); 740 error = i->ifp->if_ipsec_accel_m->if_spddel(i->ifp, 741 sp, i->ifdata); 742 if (error != 0) { 743 dprintf( 744 "ipsec_accel_spddel: %s if_spddel %p res %d\n", 745 if_name(i->ifp), sp, error); 746 } 747 } 748 if_rele(i->ifp); 749 free(i, M_IPSEC_MISC); 750 mtx_lock(&ipsec_accel_sav_tmp); 751 } 752 mtx_unlock(&ipsec_accel_sav_tmp); 753 key_freesp(&sp); 754 CURVNET_RESTORE(); 755 } 756 757 void 758 ipsec_accel_spddel_impl(struct secpolicy *sp) 759 { 760 struct ipsec_accel_adddel_sp_tq *tq; 761 762 if (sp == NULL) 763 return; 764 765 tq = &sp->accel_del_tq; 766 if (atomic_cmpset_int(&tq->adddel_scheduled, 0, 1) == 0) 767 return; 768 tq->adddel_vnet = curthread->td_vnet; 769 TASK_INIT(&tq->adddel_task, 0, ipsec_accel_spddel_act, sp); 770 key_addref(sp); 771 taskqueue_enqueue(ipsec_accel_tq, &tq->adddel_task); 772 } 773 774 static void 775 ipsec_accel_on_ifdown_sp(struct ifnet *ifp) 776 { 777 struct ifp_handle_sp *i, *marker; 778 struct secpolicy *sp; 779 int error; 780 781 marker = malloc(sizeof(*marker), M_IPSEC_MISC, M_WAITOK | M_ZERO); 782 marker->flags = IFP_HS_MARKER; 783 784 mtx_lock(&ipsec_accel_sav_tmp); 785 CK_LIST_INSERT_HEAD(&ipsec_accel_all_sp_handles, marker, 786 sp_allh_link); 787 for (;;) { 788 i = CK_LIST_NEXT(marker, sp_allh_link); 789 if (i == NULL) 790 break; 791 CK_LIST_REMOVE(marker, sp_allh_link); 792 CK_LIST_INSERT_AFTER(i, marker, sp_allh_link); 793 if (i->ifp != ifp) 794 continue; 795 796 sp = i->sp; 797 key_addref(sp); 798 CK_LIST_REMOVE(i, sp_link); 799 CK_LIST_REMOVE(i, sp_allh_link); 800 mtx_unlock(&ipsec_accel_sav_tmp); 801 NET_EPOCH_WAIT(); 802 if ((i->flags & (IFP_HP_HANDLED | IFP_HP_REJECTED)) == 803 IFP_HP_HANDLED) { 804 dprintf("spd deinstall %s %p\n", if_name(ifp), sp); 805 error = ifp->if_ipsec_accel_m->if_spddel(ifp, 806 sp, i->ifdata); 807 } 808 if (error != 0) { 809 dprintf( 810 "ipsec_accel_on_ifdown_sp: %s if_spddel %p res %d\n", 811 if_name(ifp), sp, error); 812 } 813 key_freesp(&sp); 814 if_rele(ifp); 815 free(i, M_IPSEC_MISC); 816 mtx_lock(&ipsec_accel_sav_tmp); 817 } 818 CK_LIST_REMOVE(marker, sp_allh_link); 819 mtx_unlock(&ipsec_accel_sav_tmp); 820 free(marker, M_IPSEC_MISC); 821 } 822 823 static void 824 ipsec_accel_on_ifdown_impl(struct ifnet *ifp) 825 { 826 ipsec_accel_on_ifdown_sp(ifp); 827 ipsec_accel_on_ifdown_sav(ifp); 828 } 829 830 static void 831 ipsec_accel_ifdetach_event(void *arg __unused, struct ifnet *ifp) 832 { 833 if ((ifp->if_flags & IFF_RENAMING) != 0) 834 return; 835 ipsec_accel_on_ifdown_impl(ifp); 836 } 837 838 static bool 839 ipsec_accel_output_pad(struct mbuf *m, struct secasvar *sav, int skip, int mtu) 840 { 841 int alen, blks, hlen, padding, rlen; 842 843 rlen = m->m_pkthdr.len - skip; 844 hlen = ((sav->flags & SADB_X_EXT_OLD) != 0 ? sizeof(struct esp) : 845 sizeof(struct newesp)) + sav->ivlen; 846 blks = MAX(4, SAV_ISCTR(sav) && VNET(esp_ctr_compatibility) ? 847 sav->tdb_encalgxform->native_blocksize : 848 sav->tdb_encalgxform->blocksize); 849 padding = ((blks - ((rlen + 2) % blks)) % blks) + 2; 850 alen = xform_ah_authsize(sav->tdb_authalgxform); 851 852 return (skip + hlen + rlen + padding + alen <= mtu); 853 } 854 855 static bool 856 ipsec_accel_output_tag(struct mbuf *m, u_int drv_spi) 857 { 858 struct ipsec_accel_out_tag *tag; 859 860 tag = (struct ipsec_accel_out_tag *)m_tag_get( 861 PACKET_TAG_IPSEC_ACCEL_OUT, sizeof(*tag), M_NOWAIT); 862 if (tag == NULL) 863 return (false); 864 tag->drv_spi = drv_spi; 865 m_tag_prepend(m, &tag->tag); 866 return (true); 867 } 868 869 bool 870 ipsec_accel_output(struct ifnet *ifp, struct mbuf *m, struct inpcb *inp, 871 struct secpolicy *sp, struct secasvar *sav, int af, int mtu, int *hwassist) 872 { 873 struct ifp_handle_sav *i; 874 struct ip *ip; 875 struct tcpcb *tp; 876 u_long ip_len, skip; 877 bool res; 878 879 *hwassist = 0; 880 res = false; 881 if (ifp == NULL) 882 return (res); 883 884 M_ASSERTPKTHDR(m); 885 NET_EPOCH_ASSERT(); 886 887 if (sav == NULL) { 888 res = ipsec_accel_output_tag(m, IPSEC_ACCEL_DRV_SPI_BYPASS); 889 goto out; 890 } 891 892 i = ipsec_accel_is_accel_sav_ptr(sav, ifp); 893 if (i == NULL || (i->flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) != 894 IFP_HS_HANDLED) 895 goto out; 896 897 if ((m->m_pkthdr.csum_flags & CSUM_TSO) == 0) { 898 ip_len = m->m_pkthdr.len; 899 if (ip_len + i->hdr_ext_size > mtu) 900 goto out; 901 switch (af) { 902 case AF_INET: 903 ip = mtod(m, struct ip *); 904 skip = ip->ip_hl << 2; 905 break; 906 case AF_INET6: 907 skip = sizeof(struct ip6_hdr); 908 break; 909 default: 910 __unreachable(); 911 } 912 if (!ipsec_accel_output_pad(m, sav, skip, mtu)) 913 goto out; 914 } 915 916 if (!ipsec_accel_output_tag(m, i->drv_spi)) 917 goto out; 918 919 ipsec_accel_sa_recordxfer(sav, m); 920 key_freesav(&sav); 921 if (sp != NULL) 922 key_freesp(&sp); 923 924 *hwassist = ifp->if_ipsec_accel_m->if_hwassist(ifp, sav, 925 i->drv_spi, i->ifdata); 926 res = true; 927 out: 928 if (inp != NULL && inp->inp_pcbinfo == &V_tcbinfo) { 929 INP_WLOCK_ASSERT(inp); 930 tp = (struct tcpcb *)inp; 931 if (res && (*hwassist & (CSUM_TSO | CSUM_IP6_TSO)) != 0) { 932 tp->t_flags2 |= TF2_IPSEC_TSO; 933 } else { 934 tp->t_flags2 &= ~TF2_IPSEC_TSO; 935 } 936 } 937 return (res); 938 } 939 940 struct ipsec_accel_in_tag * 941 ipsec_accel_input_tag_lookup(const struct mbuf *m) 942 { 943 struct ipsec_accel_in_tag *tag; 944 struct m_tag *xtag; 945 946 xtag = m_tag_find(__DECONST(struct mbuf *, m), 947 PACKET_TAG_IPSEC_ACCEL_IN, NULL); 948 if (xtag == NULL) 949 return (NULL); 950 tag = __containerof(xtag, struct ipsec_accel_in_tag, tag); 951 return (tag); 952 } 953 954 int 955 ipsec_accel_input(struct mbuf *m, int offset, int proto) 956 { 957 struct secasvar *sav; 958 struct ipsec_accel_in_tag *tag; 959 960 tag = ipsec_accel_input_tag_lookup(m); 961 if (tag == NULL) 962 return (ENXIO); 963 964 if (tag->drv_spi < IPSEC_ACCEL_DRV_SPI_MIN || 965 tag->drv_spi > IPSEC_ACCEL_DRV_SPI_MAX) { 966 dprintf("if %s mbuf %p drv_spi %d invalid, packet dropped\n", 967 (m->m_flags & M_PKTHDR) != 0 ? if_name(m->m_pkthdr.rcvif) : 968 "<unknwn>", m, tag->drv_spi); 969 m_freem(m); 970 return (EINPROGRESS); 971 } 972 973 sav = ipsec_accel_drvspi_to_sa(tag->drv_spi); 974 if (sav != NULL) 975 ipsec_accel_sa_recordxfer(sav, m); 976 return (0); 977 } 978 979 static void 980 ipsec_accel_sa_recordxfer(struct secasvar *sav, struct mbuf *m) 981 { 982 counter_u64_add(sav->accel_lft_sw, 1); 983 counter_u64_add(sav->accel_lft_sw + 1, m->m_pkthdr.len); 984 if (sav->accel_firstused == 0) 985 sav->accel_firstused = time_second; 986 } 987 988 static void 989 ipsec_accel_sa_lifetime_update(struct seclifetime *lft_c, 990 const struct seclifetime *lft_l) 991 { 992 lft_c->allocations += lft_l->allocations; 993 lft_c->bytes += lft_l->bytes; 994 lft_c->usetime = min(lft_c->usetime, lft_l->usetime); 995 } 996 997 static void 998 ipsec_accel_drv_sa_lifetime_update_impl(struct secasvar *sav, if_t ifp, 999 u_int drv_spi, uint64_t octets, uint64_t allocs) 1000 { 1001 struct epoch_tracker et; 1002 struct ifp_handle_sav *i; 1003 uint64_t odiff, adiff; 1004 1005 NET_EPOCH_ENTER(et); 1006 mtx_lock(&ipsec_accel_cnt_lock); 1007 1008 if (allocs != 0) { 1009 if (sav->firstused == 0) 1010 sav->firstused = time_second; 1011 if (sav->accel_firstused == 0) 1012 sav->accel_firstused = time_second; 1013 } 1014 1015 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 1016 if (i->ifp == ifp && i->drv_spi == drv_spi) 1017 break; 1018 } 1019 if (i == NULL) 1020 goto out; 1021 1022 odiff = octets - i->cnt_octets; 1023 adiff = allocs - i->cnt_allocs; 1024 1025 if (sav->lft_c != NULL) { 1026 counter_u64_add(sav->lft_c_bytes, odiff); 1027 counter_u64_add(sav->lft_c_allocations, adiff); 1028 } 1029 1030 i->cnt_octets = octets; 1031 i->cnt_allocs = allocs; 1032 sav->accel_hw_octets += odiff; 1033 sav->accel_hw_allocs += adiff; 1034 1035 out: 1036 mtx_unlock(&ipsec_accel_cnt_lock); 1037 NET_EPOCH_EXIT(et); 1038 } 1039 1040 static int 1041 ipsec_accel_drv_sa_lifetime_fetch_impl(struct secasvar *sav, 1042 if_t ifp, u_int drv_spi, uint64_t *octets, uint64_t *allocs) 1043 { 1044 struct ifp_handle_sav *i; 1045 int error; 1046 1047 NET_EPOCH_ASSERT(); 1048 error = 0; 1049 1050 mtx_lock(&ipsec_accel_cnt_lock); 1051 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 1052 if (i->ifp == ifp && i->drv_spi == drv_spi) { 1053 *octets = i->cnt_octets; 1054 *allocs = i->cnt_allocs; 1055 break; 1056 } 1057 } 1058 if (i == NULL) 1059 error = ENOENT; 1060 mtx_unlock(&ipsec_accel_cnt_lock); 1061 return (error); 1062 } 1063 1064 static void 1065 ipsec_accel_sa_lifetime_hw(struct secasvar *sav, if_t ifp, 1066 struct seclifetime *lft) 1067 { 1068 struct ifp_handle_sav *i; 1069 if_sa_cnt_fn_t p; 1070 1071 IFNET_RLOCK_ASSERT(); 1072 1073 i = ipsec_accel_is_accel_sav_ptr(sav, ifp); 1074 if (i != NULL && (i->flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) == 1075 IFP_HS_HANDLED) { 1076 p = ifp->if_ipsec_accel_m->if_sa_cnt; 1077 if (p != NULL) 1078 p(ifp, sav, i->drv_spi, i->ifdata, lft); 1079 } 1080 } 1081 1082 static int 1083 ipsec_accel_sa_lifetime_op_impl(struct secasvar *sav, 1084 struct seclifetime *lft_c, if_t ifp, enum IF_SA_CNT_WHICH op, 1085 struct rm_priotracker *sahtree_trackerp) 1086 { 1087 struct seclifetime lft_l, lft_s; 1088 struct ifp_handle_sav *i; 1089 if_t ifp1; 1090 if_sa_cnt_fn_t p; 1091 int error; 1092 1093 error = 0; 1094 memset(&lft_l, 0, sizeof(lft_l)); 1095 memset(&lft_s, 0, sizeof(lft_s)); 1096 1097 switch (op & ~IF_SA_CNT_UPD) { 1098 case IF_SA_CNT_IFP_HW_VAL: 1099 ipsec_accel_sa_lifetime_hw(sav, ifp, &lft_l); 1100 ipsec_accel_sa_lifetime_update(&lft_l, &lft_s); 1101 break; 1102 1103 case IF_SA_CNT_TOTAL_SW_VAL: 1104 lft_l.allocations = (uint32_t)counter_u64_fetch( 1105 sav->accel_lft_sw); 1106 lft_l.bytes = counter_u64_fetch(sav->accel_lft_sw + 1); 1107 lft_l.usetime = sav->accel_firstused; 1108 break; 1109 1110 case IF_SA_CNT_TOTAL_HW_VAL: 1111 IFNET_RLOCK_ASSERT(); 1112 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 1113 if ((i->flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) != 1114 IFP_HS_HANDLED) 1115 continue; 1116 ifp1 = i->ifp; 1117 p = ifp1->if_ipsec_accel_m->if_sa_cnt; 1118 if (p == NULL) 1119 continue; 1120 memset(&lft_s, 0, sizeof(lft_s)); 1121 if (sahtree_trackerp != NULL) 1122 ipsec_sahtree_runlock(sahtree_trackerp); 1123 error = p(ifp1, sav, i->drv_spi, i->ifdata, &lft_s); 1124 if (sahtree_trackerp != NULL) 1125 ipsec_sahtree_rlock(sahtree_trackerp); 1126 if (error == 0) 1127 ipsec_accel_sa_lifetime_update(&lft_l, &lft_s); 1128 } 1129 break; 1130 } 1131 1132 if (error == 0) { 1133 if ((op & IF_SA_CNT_UPD) == 0) 1134 memset(lft_c, 0, sizeof(*lft_c)); 1135 ipsec_accel_sa_lifetime_update(lft_c, &lft_l); 1136 } 1137 1138 return (error); 1139 } 1140 1141 static void 1142 ipsec_accel_sync_imp(void) 1143 { 1144 taskqueue_drain_all(ipsec_accel_tq); 1145 } 1146 1147 static struct mbuf * 1148 ipsec_accel_key_setaccelif_impl(struct secasvar *sav) 1149 { 1150 struct mbuf *m, *m1; 1151 struct ifp_handle_sav *i; 1152 struct epoch_tracker et; 1153 1154 if (sav->accel_ifname != NULL) 1155 return (key_setaccelif(sav->accel_ifname)); 1156 1157 m = m1 = NULL; 1158 1159 NET_EPOCH_ENTER(et); 1160 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 1161 if ((i->flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) == 1162 IFP_HS_HANDLED) { 1163 m1 = key_setaccelif(if_name(i->ifp)); 1164 if (m == NULL) 1165 m = m1; 1166 else if (m1 != NULL) 1167 m_cat(m, m1); 1168 } 1169 } 1170 NET_EPOCH_EXIT(et); 1171 return (m); 1172 } 1173 1174 static bool 1175 ipsec_accel_fill_xh_impl(if_t ifp, uint32_t drv_spi, struct xform_history *xh) 1176 { 1177 struct ifp_handle_sav *i; 1178 1179 if (drv_spi < IPSEC_ACCEL_DRV_SPI_MIN || 1180 drv_spi > IPSEC_ACCEL_DRV_SPI_MAX) 1181 return (false); 1182 1183 i = DRVSPI_SA_PCTRIE_LOOKUP(&drv_spi_pctrie, drv_spi); 1184 if (i == NULL) 1185 return (false); 1186 memcpy(xh, &i->xfh, sizeof(*xh)); 1187 return (true); 1188 } 1189 1190 #endif /* IPSEC_OFFLOAD */ 1191