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 (drv_spi == -1) { 293 dprintf("ipsec_accel_sa_install_newkey: cannot alloc " 294 "drv_spi if %s spi %#x\n", if_name(ifp), 295 be32toh(tq->sav->spi)); 296 return (0); 297 } 298 if (tq->sav->accel_ifname != NULL && 299 strcmp(tq->sav->accel_ifname, if_name(ifp)) != 0) { 300 error = ipsec_accel_handle_sav(tq->sav, 301 ifp, drv_spi, priv, IFP_HS_REJECTED, NULL); 302 goto out; 303 } 304 error = ifp->if_ipsec_accel_m->if_sa_newkey(ifp, tq->sav, 305 drv_spi, &priv); 306 if (error != 0) { 307 if (error == EOPNOTSUPP) { 308 dprintf("ipsec_accel_sa_newkey: driver " 309 "refused sa if %s spi %#x\n", 310 if_name(ifp), be32toh(tq->sav->spi)); 311 error = ipsec_accel_handle_sav(tq->sav, 312 ifp, drv_spi, priv, IFP_HS_REJECTED, NULL); 313 /* XXXKIB */ 314 } else { 315 dprintf("ipsec_accel_sa_newkey: driver " 316 "error %d if %s spi %#x\n", 317 error, if_name(ifp), be32toh(tq->sav->spi)); 318 /* XXXKIB */ 319 } 320 } else { 321 error = ipsec_accel_handle_sav(tq->sav, ifp, 322 drv_spi, priv, IFP_HS_HANDLED, NULL); 323 if (error != 0) { 324 /* XXXKIB */ 325 dprintf("ipsec_accel_sa_newkey: handle_sav " 326 "err %d if %s spi %#x\n", error, 327 if_name(ifp), be32toh(tq->sav->spi)); 328 } 329 } 330 out: 331 return (0); 332 } 333 334 static void 335 ipsec_accel_sa_newkey_act(void *context, int pending) 336 { 337 struct ipsec_accel_install_newkey_tq *tq; 338 void *tqf; 339 struct secasvar *sav; 340 341 tq = context; 342 tqf = NULL; 343 sav = tq->sav; 344 CURVNET_SET(tq->install_vnet); 345 mtx_lock(&ipsec_accel_sav_tmp); 346 if ((sav->accel_flags & (SADB_KEY_ACCEL_INST | 347 SADB_KEY_ACCEL_DEINST)) == 0 && 348 sav->state == SADB_SASTATE_MATURE) { 349 sav->accel_flags |= SADB_KEY_ACCEL_INST; 350 mtx_unlock(&ipsec_accel_sav_tmp); 351 if_foreach_sleep(ipsec_accel_sa_install_match, context, 352 ipsec_accel_sa_newkey_cb, context); 353 ipsec_accel_alloc_forget_tq(sav); 354 mtx_lock(&ipsec_accel_sav_tmp); 355 356 /* 357 * If ipsec_accel_forget_sav() raced with us and set 358 * the flag, do its work. Its task cannot execute in 359 * parallel since ipsec_accel taskqueue is single-threaded. 360 */ 361 if ((sav->accel_flags & SADB_KEY_ACCEL_DEINST) != 0) { 362 tqf = (void *)sav->accel_forget_tq; 363 sav->accel_forget_tq = 0; 364 ipsec_accel_forget_sav_clear(sav); 365 } 366 } 367 mtx_unlock(&ipsec_accel_sav_tmp); 368 key_freesav(&tq->sav); 369 CURVNET_RESTORE(); 370 free(tq, M_TEMP); 371 free(tqf, M_TEMP); 372 } 373 374 static void 375 ipsec_accel_sa_newkey_impl(struct secasvar *sav) 376 { 377 struct ipsec_accel_install_newkey_tq *tq; 378 379 if ((sav->accel_flags & (SADB_KEY_ACCEL_INST | 380 SADB_KEY_ACCEL_DEINST)) != 0) 381 return; 382 383 dprintf( 384 "ipsec_accel_sa_install_newkey: spi %#x flags %#x seq %d\n", 385 be32toh(sav->spi), sav->flags, sav->seq); 386 387 tq = malloc(sizeof(*tq), M_TEMP, M_NOWAIT); 388 if (tq == NULL) { 389 dprintf("ipsec_accel_sa_install_newkey: no memory for tq, " 390 "spi %#x\n", be32toh(sav->spi)); 391 /* XXXKIB */ 392 return; 393 } 394 395 refcount_acquire(&sav->refcnt); 396 397 TASK_INIT(&tq->install_task, 0, ipsec_accel_sa_newkey_act, tq); 398 tq->sav = sav; 399 tq->install_vnet = curthread->td_vnet; 400 taskqueue_enqueue(ipsec_accel_tq, &tq->install_task); 401 } 402 403 static int 404 ipsec_accel_handle_sav(struct secasvar *sav, struct ifnet *ifp, 405 u_int drv_spi, void *priv, uint32_t flags, struct ifp_handle_sav **ires) 406 { 407 struct ifp_handle_sav *ihs, *i; 408 int error; 409 410 MPASS(__bitcount(flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) == 1); 411 412 ihs = malloc(sizeof(*ihs), M_IPSEC_MISC, M_WAITOK | M_ZERO); 413 ihs->ifp = ifp; 414 ihs->sav = sav; 415 ihs->drv_spi = drv_spi; 416 ihs->ifdata = priv; 417 ihs->flags = flags; 418 ihs->hdr_ext_size = esp_hdrsiz(sav); 419 memcpy(&ihs->xfh.dst, &sav->sah->saidx.dst, sizeof(ihs->xfh.dst)); 420 ihs->xfh.spi = sav->spi; 421 ihs->xfh.proto = sav->sah->saidx.proto; 422 ihs->xfh.mode = sav->sah->saidx.mode; 423 mtx_lock(&ipsec_accel_sav_tmp); 424 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 425 if (i->ifp == ifp) { 426 error = EALREADY; 427 goto errout; 428 } 429 } 430 error = DRVSPI_SA_PCTRIE_INSERT(&drv_spi_pctrie, ihs); 431 if (error != 0) 432 goto errout; 433 if_ref(ihs->ifp); 434 CK_LIST_INSERT_HEAD(&sav->accel_ifps, ihs, sav_link); 435 CK_LIST_INSERT_HEAD(&ipsec_accel_all_sav_handles, ihs, sav_allh_link); 436 mtx_unlock(&ipsec_accel_sav_tmp); 437 if (ires != NULL) 438 *ires = ihs; 439 return (0); 440 errout: 441 mtx_unlock(&ipsec_accel_sav_tmp); 442 free(ihs, M_IPSEC_MISC); 443 if (ires != NULL) 444 *ires = NULL; 445 return (error); 446 } 447 448 static void 449 ipsec_accel_forget_handle_sav(struct ifp_handle_sav *i, bool freesav) 450 { 451 struct ifnet *ifp; 452 struct secasvar *sav; 453 454 mtx_assert(&ipsec_accel_sav_tmp, MA_OWNED); 455 456 CK_LIST_REMOVE(i, sav_link); 457 CK_LIST_REMOVE(i, sav_allh_link); 458 DRVSPI_SA_PCTRIE_REMOVE(&drv_spi_pctrie, i->drv_spi); 459 mtx_unlock(&ipsec_accel_sav_tmp); 460 NET_EPOCH_WAIT(); 461 ifp = i->ifp; 462 sav = i->sav; 463 if ((i->flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) == 464 IFP_HS_HANDLED) { 465 dprintf("sa deinstall %s %p spi %#x ifl %#x\n", 466 if_name(ifp), sav, be32toh(sav->spi), i->flags); 467 ifp->if_ipsec_accel_m->if_sa_deinstall(ifp, 468 i->drv_spi, i->ifdata); 469 } 470 if_rele(ifp); 471 free_unr(drv_spi_unr, i->drv_spi); 472 free(i, M_IPSEC_MISC); 473 if (freesav) 474 key_freesav(&sav); 475 mtx_lock(&ipsec_accel_sav_tmp); 476 } 477 478 static void 479 ipsec_accel_forget_sav_clear(struct secasvar *sav) 480 { 481 struct ifp_handle_sav *i; 482 483 for (;;) { 484 i = CK_LIST_FIRST(&sav->accel_ifps); 485 if (i == NULL) 486 break; 487 ipsec_accel_forget_handle_sav(i, false); 488 } 489 } 490 491 static void 492 ipsec_accel_forget_sav_act(void *arg, int pending) 493 { 494 struct ipsec_accel_forget_tq *tq; 495 struct secasvar *sav; 496 497 tq = arg; 498 sav = tq->sav; 499 CURVNET_SET(tq->forget_vnet); 500 mtx_lock(&ipsec_accel_sav_tmp); 501 ipsec_accel_forget_sav_clear(sav); 502 mtx_unlock(&ipsec_accel_sav_tmp); 503 key_freesav(&sav); 504 CURVNET_RESTORE(); 505 free(tq, M_TEMP); 506 } 507 508 void 509 ipsec_accel_forget_sav_impl(struct secasvar *sav) 510 { 511 struct ipsec_accel_forget_tq *tq; 512 513 mtx_lock(&ipsec_accel_sav_tmp); 514 sav->accel_flags |= SADB_KEY_ACCEL_DEINST; 515 tq = (void *)atomic_load_ptr(&sav->accel_forget_tq); 516 if (tq == NULL || !atomic_cmpset_ptr(&sav->accel_forget_tq, 517 (uintptr_t)tq, 0)) { 518 mtx_unlock(&ipsec_accel_sav_tmp); 519 return; 520 } 521 mtx_unlock(&ipsec_accel_sav_tmp); 522 523 refcount_acquire(&sav->refcnt); 524 TASK_INIT(&tq->forget_task, 0, ipsec_accel_forget_sav_act, tq); 525 tq->forget_vnet = curthread->td_vnet; 526 tq->sav = sav; 527 taskqueue_enqueue(ipsec_accel_tq, &tq->forget_task); 528 } 529 530 static void 531 ipsec_accel_on_ifdown_sav(struct ifnet *ifp) 532 { 533 struct ifp_handle_sav *i, *marker; 534 535 marker = malloc(sizeof(*marker), M_IPSEC_MISC, M_WAITOK | M_ZERO); 536 marker->flags = IFP_HS_MARKER; 537 538 mtx_lock(&ipsec_accel_sav_tmp); 539 CK_LIST_INSERT_HEAD(&ipsec_accel_all_sav_handles, marker, 540 sav_allh_link); 541 for (;;) { 542 i = CK_LIST_NEXT(marker, sav_allh_link); 543 if (i == NULL) 544 break; 545 CK_LIST_REMOVE(marker, sav_allh_link); 546 CK_LIST_INSERT_AFTER(i, marker, sav_allh_link); 547 if (i->ifp == ifp) { 548 refcount_acquire(&i->sav->refcnt); /* XXXKIB wrap ? */ 549 ipsec_accel_forget_handle_sav(i, true); 550 } 551 } 552 CK_LIST_REMOVE(marker, sav_allh_link); 553 mtx_unlock(&ipsec_accel_sav_tmp); 554 free(marker, M_IPSEC_MISC); 555 } 556 557 static struct ifp_handle_sav * 558 ipsec_accel_is_accel_sav_ptr_raw(struct secasvar *sav, struct ifnet *ifp) 559 { 560 struct ifp_handle_sav *i; 561 562 if ((ifp->if_capenable2 & IFCAP2_BIT(IFCAP2_IPSEC_OFFLOAD)) == 0) 563 return (NULL); 564 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 565 if (i->ifp == ifp) 566 return (i); 567 } 568 return (NULL); 569 } 570 571 static struct ifp_handle_sav * 572 ipsec_accel_is_accel_sav_ptr(struct secasvar *sav, struct ifnet *ifp) 573 { 574 NET_EPOCH_ASSERT(); 575 return (ipsec_accel_is_accel_sav_ptr_raw(sav, ifp)); 576 } 577 578 static bool 579 ipsec_accel_is_accel_sav_impl(struct secasvar *sav) 580 { 581 return (!CK_LIST_EMPTY(&sav->accel_ifps)); 582 } 583 584 static struct secasvar * 585 ipsec_accel_drvspi_to_sa(u_int drv_spi) 586 { 587 struct ifp_handle_sav *i; 588 589 i = DRVSPI_SA_PCTRIE_LOOKUP(&drv_spi_pctrie, drv_spi); 590 if (i == NULL) 591 return (NULL); 592 return (i->sav); 593 } 594 595 static struct ifp_handle_sp * 596 ipsec_accel_find_accel_sp(struct secpolicy *sp, if_t ifp) 597 { 598 struct ifp_handle_sp *i; 599 600 CK_LIST_FOREACH(i, &sp->accel_ifps, sp_link) { 601 if (i->ifp == ifp) 602 return (i); 603 } 604 return (NULL); 605 } 606 607 static bool 608 ipsec_accel_is_accel_sp(struct secpolicy *sp, if_t ifp) 609 { 610 return (ipsec_accel_find_accel_sp(sp, ifp) != NULL); 611 } 612 613 static int 614 ipsec_accel_remember_sp(struct secpolicy *sp, if_t ifp, 615 struct ifp_handle_sp **ip) 616 { 617 struct ifp_handle_sp *i; 618 619 i = malloc(sizeof(*i), M_IPSEC_MISC, M_WAITOK | M_ZERO); 620 i->sp = sp; 621 i->ifp = ifp; 622 if_ref(ifp); 623 i->flags = IFP_HP_HANDLED; 624 mtx_lock(&ipsec_accel_sav_tmp); 625 CK_LIST_INSERT_HEAD(&sp->accel_ifps, i, sp_link); 626 CK_LIST_INSERT_HEAD(&ipsec_accel_all_sp_handles, i, sp_allh_link); 627 mtx_unlock(&ipsec_accel_sav_tmp); 628 *ip = i; 629 return (0); 630 } 631 632 static bool 633 ipsec_accel_spdadd_match(if_t ifp, void *arg) 634 { 635 struct secpolicy *sp; 636 637 if ((ifp->if_capenable2 & IFCAP2_BIT(IFCAP2_IPSEC_OFFLOAD)) == 0 || 638 ifp->if_ipsec_accel_m->if_spdadd == NULL) 639 return (false); 640 sp = arg; 641 if (sp->accel_ifname != NULL && 642 strcmp(sp->accel_ifname, if_name(ifp)) != 0) 643 return (false); 644 if (ipsec_accel_is_accel_sp(sp, ifp)) 645 return (false); 646 return (true); 647 } 648 649 static int 650 ipsec_accel_spdadd_cb(if_t ifp, void *arg) 651 { 652 struct secpolicy *sp; 653 struct inpcb *inp; 654 struct ifp_handle_sp *i; 655 int error; 656 657 sp = arg; 658 inp = sp->ipsec_accel_add_sp_inp; 659 dprintf("ipsec_accel_spdadd_cb: ifp %s m %p sp %p inp %p\n", 660 if_name(ifp), ifp->if_ipsec_accel_m->if_spdadd, sp, inp); 661 error = ipsec_accel_remember_sp(sp, ifp, &i); 662 if (error != 0) { 663 dprintf("ipsec_accel_spdadd: %s if_spdadd %p remember res %d\n", 664 if_name(ifp), sp, error); 665 return (0); 666 } 667 error = ifp->if_ipsec_accel_m->if_spdadd(ifp, sp, inp, &i->ifdata); 668 if (error != 0) { 669 i->flags |= IFP_HP_REJECTED; 670 dprintf("ipsec_accel_spdadd: %s if_spdadd %p res %d\n", 671 if_name(ifp), sp, error); 672 } 673 return (0); 674 } 675 676 static void 677 ipsec_accel_spdadd_act(void *arg, int pending) 678 { 679 struct secpolicy *sp; 680 struct inpcb *inp; 681 682 sp = arg; 683 CURVNET_SET(sp->accel_add_tq.adddel_vnet); 684 if_foreach_sleep(ipsec_accel_spdadd_match, arg, 685 ipsec_accel_spdadd_cb, arg); 686 inp = sp->ipsec_accel_add_sp_inp; 687 if (inp != NULL) { 688 INP_WLOCK(inp); 689 if (!in_pcbrele_wlocked(inp)) 690 INP_WUNLOCK(inp); 691 sp->ipsec_accel_add_sp_inp = NULL; 692 } 693 CURVNET_RESTORE(); 694 key_freesp(&sp); 695 } 696 697 void 698 ipsec_accel_spdadd_impl(struct secpolicy *sp, struct inpcb *inp) 699 { 700 struct ipsec_accel_adddel_sp_tq *tq; 701 702 if (sp == NULL) 703 return; 704 if (sp->tcount == 0 && inp == NULL) 705 return; 706 tq = &sp->accel_add_tq; 707 if (atomic_cmpset_int(&tq->adddel_scheduled, 0, 1) == 0) 708 return; 709 tq->adddel_vnet = curthread->td_vnet; 710 sp->ipsec_accel_add_sp_inp = inp; 711 if (inp != NULL) 712 in_pcbref(inp); 713 TASK_INIT(&tq->adddel_task, 0, ipsec_accel_spdadd_act, sp); 714 key_addref(sp); 715 taskqueue_enqueue(ipsec_accel_tq, &tq->adddel_task); 716 } 717 718 static void 719 ipsec_accel_spddel_act(void *arg, int pending) 720 { 721 struct ifp_handle_sp *i; 722 struct secpolicy *sp; 723 int error; 724 725 sp = arg; 726 CURVNET_SET(sp->accel_del_tq.adddel_vnet); 727 mtx_lock(&ipsec_accel_sav_tmp); 728 for (;;) { 729 i = CK_LIST_FIRST(&sp->accel_ifps); 730 if (i == NULL) 731 break; 732 CK_LIST_REMOVE(i, sp_link); 733 CK_LIST_REMOVE(i, sp_allh_link); 734 mtx_unlock(&ipsec_accel_sav_tmp); 735 NET_EPOCH_WAIT(); 736 if ((i->flags & (IFP_HP_HANDLED | IFP_HP_REJECTED)) == 737 IFP_HP_HANDLED) { 738 dprintf("spd deinstall %s %p\n", if_name(i->ifp), sp); 739 error = i->ifp->if_ipsec_accel_m->if_spddel(i->ifp, 740 sp, i->ifdata); 741 if (error != 0) { 742 dprintf( 743 "ipsec_accel_spddel: %s if_spddel %p res %d\n", 744 if_name(i->ifp), sp, error); 745 } 746 } 747 if_rele(i->ifp); 748 free(i, M_IPSEC_MISC); 749 mtx_lock(&ipsec_accel_sav_tmp); 750 } 751 mtx_unlock(&ipsec_accel_sav_tmp); 752 key_freesp(&sp); 753 CURVNET_RESTORE(); 754 } 755 756 void 757 ipsec_accel_spddel_impl(struct secpolicy *sp) 758 { 759 struct ipsec_accel_adddel_sp_tq *tq; 760 761 if (sp == NULL) 762 return; 763 764 tq = &sp->accel_del_tq; 765 if (atomic_cmpset_int(&tq->adddel_scheduled, 0, 1) == 0) 766 return; 767 tq->adddel_vnet = curthread->td_vnet; 768 TASK_INIT(&tq->adddel_task, 0, ipsec_accel_spddel_act, sp); 769 key_addref(sp); 770 taskqueue_enqueue(ipsec_accel_tq, &tq->adddel_task); 771 } 772 773 static void 774 ipsec_accel_on_ifdown_sp(struct ifnet *ifp) 775 { 776 struct ifp_handle_sp *i, *marker; 777 struct secpolicy *sp; 778 int error; 779 780 marker = malloc(sizeof(*marker), M_IPSEC_MISC, M_WAITOK | M_ZERO); 781 marker->flags = IFP_HS_MARKER; 782 783 mtx_lock(&ipsec_accel_sav_tmp); 784 CK_LIST_INSERT_HEAD(&ipsec_accel_all_sp_handles, marker, 785 sp_allh_link); 786 for (;;) { 787 i = CK_LIST_NEXT(marker, sp_allh_link); 788 if (i == NULL) 789 break; 790 CK_LIST_REMOVE(marker, sp_allh_link); 791 CK_LIST_INSERT_AFTER(i, marker, sp_allh_link); 792 if (i->ifp != ifp) 793 continue; 794 795 sp = i->sp; 796 key_addref(sp); 797 CK_LIST_REMOVE(i, sp_link); 798 CK_LIST_REMOVE(i, sp_allh_link); 799 mtx_unlock(&ipsec_accel_sav_tmp); 800 NET_EPOCH_WAIT(); 801 if ((i->flags & (IFP_HP_HANDLED | IFP_HP_REJECTED)) == 802 IFP_HP_HANDLED) { 803 dprintf("spd deinstall %s %p\n", if_name(ifp), sp); 804 error = ifp->if_ipsec_accel_m->if_spddel(ifp, 805 sp, i->ifdata); 806 } 807 if (error != 0) { 808 dprintf( 809 "ipsec_accel_on_ifdown_sp: %s if_spddel %p res %d\n", 810 if_name(ifp), sp, error); 811 } 812 key_freesp(&sp); 813 if_rele(ifp); 814 free(i, M_IPSEC_MISC); 815 mtx_lock(&ipsec_accel_sav_tmp); 816 } 817 CK_LIST_REMOVE(marker, sp_allh_link); 818 mtx_unlock(&ipsec_accel_sav_tmp); 819 free(marker, M_IPSEC_MISC); 820 } 821 822 static void 823 ipsec_accel_on_ifdown_impl(struct ifnet *ifp) 824 { 825 ipsec_accel_on_ifdown_sp(ifp); 826 ipsec_accel_on_ifdown_sav(ifp); 827 } 828 829 static void 830 ipsec_accel_ifdetach_event(void *arg __unused, struct ifnet *ifp) 831 { 832 if ((ifp->if_flags & IFF_RENAMING) != 0) 833 return; 834 ipsec_accel_on_ifdown_impl(ifp); 835 } 836 837 static bool 838 ipsec_accel_output_pad(struct mbuf *m, struct secasvar *sav, int skip, int mtu) 839 { 840 int alen, blks, hlen, padding, rlen; 841 842 rlen = m->m_pkthdr.len - skip; 843 hlen = ((sav->flags & SADB_X_EXT_OLD) != 0 ? sizeof(struct esp) : 844 sizeof(struct newesp)) + sav->ivlen; 845 blks = MAX(4, SAV_ISCTR(sav) && VNET(esp_ctr_compatibility) ? 846 sav->tdb_encalgxform->native_blocksize : 847 sav->tdb_encalgxform->blocksize); 848 padding = ((blks - ((rlen + 2) % blks)) % blks) + 2; 849 alen = xform_ah_authsize(sav->tdb_authalgxform); 850 851 return (skip + hlen + rlen + padding + alen <= mtu); 852 } 853 854 static bool 855 ipsec_accel_output_tag(struct mbuf *m, u_int drv_spi) 856 { 857 struct ipsec_accel_out_tag *tag; 858 859 tag = (struct ipsec_accel_out_tag *)m_tag_get( 860 PACKET_TAG_IPSEC_ACCEL_OUT, sizeof(*tag), M_NOWAIT); 861 if (tag == NULL) 862 return (false); 863 tag->drv_spi = drv_spi; 864 m_tag_prepend(m, &tag->tag); 865 return (true); 866 } 867 868 bool 869 ipsec_accel_output(struct ifnet *ifp, struct mbuf *m, struct inpcb *inp, 870 struct secpolicy *sp, struct secasvar *sav, int af, int mtu, int *hwassist) 871 { 872 struct ifp_handle_sav *i; 873 struct ip *ip; 874 struct tcpcb *tp; 875 u_long ip_len, skip; 876 bool res; 877 878 *hwassist = 0; 879 res = false; 880 if (ifp == NULL) 881 return (res); 882 883 M_ASSERTPKTHDR(m); 884 NET_EPOCH_ASSERT(); 885 886 if (sav == NULL) { 887 res = ipsec_accel_output_tag(m, IPSEC_ACCEL_DRV_SPI_BYPASS); 888 goto out; 889 } 890 891 i = ipsec_accel_is_accel_sav_ptr(sav, ifp); 892 if (i == NULL || (i->flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) != 893 IFP_HS_HANDLED) 894 goto out; 895 896 if ((m->m_pkthdr.csum_flags & CSUM_TSO) == 0) { 897 ip_len = m->m_pkthdr.len; 898 if (ip_len + i->hdr_ext_size > mtu) 899 goto out; 900 switch (af) { 901 case AF_INET: 902 ip = mtod(m, struct ip *); 903 skip = ip->ip_hl << 2; 904 break; 905 case AF_INET6: 906 skip = sizeof(struct ip6_hdr); 907 break; 908 default: 909 __unreachable(); 910 } 911 if (!ipsec_accel_output_pad(m, sav, skip, mtu)) 912 goto out; 913 } 914 915 if (!ipsec_accel_output_tag(m, i->drv_spi)) 916 goto out; 917 918 ipsec_accel_sa_recordxfer(sav, m); 919 key_freesav(&sav); 920 if (sp != NULL) 921 key_freesp(&sp); 922 923 *hwassist = ifp->if_ipsec_accel_m->if_hwassist(ifp, sav, 924 i->drv_spi, i->ifdata); 925 res = true; 926 out: 927 if (inp != NULL && inp->inp_pcbinfo == &V_tcbinfo) { 928 INP_WLOCK_ASSERT(inp); 929 tp = (struct tcpcb *)inp; 930 if (res && (*hwassist & (CSUM_TSO | CSUM_IP6_TSO)) != 0) { 931 tp->t_flags2 |= TF2_IPSEC_TSO; 932 } else { 933 tp->t_flags2 &= ~TF2_IPSEC_TSO; 934 } 935 } 936 return (res); 937 } 938 939 struct ipsec_accel_in_tag * 940 ipsec_accel_input_tag_lookup(const struct mbuf *m) 941 { 942 struct ipsec_accel_in_tag *tag; 943 struct m_tag *xtag; 944 945 xtag = m_tag_find(__DECONST(struct mbuf *, m), 946 PACKET_TAG_IPSEC_ACCEL_IN, NULL); 947 if (xtag == NULL) 948 return (NULL); 949 tag = __containerof(xtag, struct ipsec_accel_in_tag, tag); 950 return (tag); 951 } 952 953 int 954 ipsec_accel_input(struct mbuf *m, int offset, int proto) 955 { 956 struct secasvar *sav; 957 struct ipsec_accel_in_tag *tag; 958 959 tag = ipsec_accel_input_tag_lookup(m); 960 if (tag == NULL) 961 return (ENXIO); 962 963 if (tag->drv_spi < IPSEC_ACCEL_DRV_SPI_MIN || 964 tag->drv_spi > IPSEC_ACCEL_DRV_SPI_MAX) { 965 dprintf("if %s mbuf %p drv_spi %d invalid, packet dropped\n", 966 (m->m_flags & M_PKTHDR) != 0 ? if_name(m->m_pkthdr.rcvif) : 967 "<unknwn>", m, tag->drv_spi); 968 m_freem(m); 969 return (EINPROGRESS); 970 } 971 972 sav = ipsec_accel_drvspi_to_sa(tag->drv_spi); 973 if (sav != NULL) 974 ipsec_accel_sa_recordxfer(sav, m); 975 return (0); 976 } 977 978 static void 979 ipsec_accel_sa_recordxfer(struct secasvar *sav, struct mbuf *m) 980 { 981 counter_u64_add(sav->accel_lft_sw, 1); 982 counter_u64_add(sav->accel_lft_sw + 1, m->m_pkthdr.len); 983 if (sav->accel_firstused == 0) 984 sav->accel_firstused = time_second; 985 } 986 987 static void 988 ipsec_accel_sa_lifetime_update(struct seclifetime *lft_c, 989 const struct seclifetime *lft_l) 990 { 991 lft_c->allocations += lft_l->allocations; 992 lft_c->bytes += lft_l->bytes; 993 lft_c->usetime = min(lft_c->usetime, lft_l->usetime); 994 } 995 996 static void 997 ipsec_accel_drv_sa_lifetime_update_impl(struct secasvar *sav, if_t ifp, 998 u_int drv_spi, uint64_t octets, uint64_t allocs) 999 { 1000 struct epoch_tracker et; 1001 struct ifp_handle_sav *i; 1002 uint64_t odiff, adiff; 1003 1004 NET_EPOCH_ENTER(et); 1005 mtx_lock(&ipsec_accel_cnt_lock); 1006 1007 if (allocs != 0) { 1008 if (sav->firstused == 0) 1009 sav->firstused = time_second; 1010 if (sav->accel_firstused == 0) 1011 sav->accel_firstused = time_second; 1012 } 1013 1014 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 1015 if (i->ifp == ifp && i->drv_spi == drv_spi) 1016 break; 1017 } 1018 if (i == NULL) 1019 goto out; 1020 1021 odiff = octets - i->cnt_octets; 1022 adiff = allocs - i->cnt_allocs; 1023 1024 if (sav->lft_c != NULL) { 1025 counter_u64_add(sav->lft_c_bytes, odiff); 1026 counter_u64_add(sav->lft_c_allocations, adiff); 1027 } 1028 1029 i->cnt_octets = octets; 1030 i->cnt_allocs = allocs; 1031 sav->accel_hw_octets += odiff; 1032 sav->accel_hw_allocs += adiff; 1033 1034 out: 1035 mtx_unlock(&ipsec_accel_cnt_lock); 1036 NET_EPOCH_EXIT(et); 1037 } 1038 1039 static int 1040 ipsec_accel_drv_sa_lifetime_fetch_impl(struct secasvar *sav, 1041 if_t ifp, u_int drv_spi, uint64_t *octets, uint64_t *allocs) 1042 { 1043 struct ifp_handle_sav *i; 1044 int error; 1045 1046 NET_EPOCH_ASSERT(); 1047 error = 0; 1048 1049 mtx_lock(&ipsec_accel_cnt_lock); 1050 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 1051 if (i->ifp == ifp && i->drv_spi == drv_spi) { 1052 *octets = i->cnt_octets; 1053 *allocs = i->cnt_allocs; 1054 break; 1055 } 1056 } 1057 if (i == NULL) 1058 error = ENOENT; 1059 mtx_unlock(&ipsec_accel_cnt_lock); 1060 return (error); 1061 } 1062 1063 static void 1064 ipsec_accel_sa_lifetime_hw(struct secasvar *sav, if_t ifp, 1065 struct seclifetime *lft) 1066 { 1067 struct ifp_handle_sav *i; 1068 if_sa_cnt_fn_t p; 1069 1070 IFNET_RLOCK_ASSERT(); 1071 1072 i = ipsec_accel_is_accel_sav_ptr(sav, ifp); 1073 if (i != NULL && (i->flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) == 1074 IFP_HS_HANDLED) { 1075 p = ifp->if_ipsec_accel_m->if_sa_cnt; 1076 if (p != NULL) 1077 p(ifp, sav, i->drv_spi, i->ifdata, lft); 1078 } 1079 } 1080 1081 static int 1082 ipsec_accel_sa_lifetime_op_impl(struct secasvar *sav, 1083 struct seclifetime *lft_c, if_t ifp, enum IF_SA_CNT_WHICH op, 1084 struct rm_priotracker *sahtree_trackerp) 1085 { 1086 struct seclifetime lft_l, lft_s; 1087 struct ifp_handle_sav *i; 1088 if_t ifp1; 1089 if_sa_cnt_fn_t p; 1090 int error; 1091 1092 error = 0; 1093 memset(&lft_l, 0, sizeof(lft_l)); 1094 memset(&lft_s, 0, sizeof(lft_s)); 1095 1096 switch (op & ~IF_SA_CNT_UPD) { 1097 case IF_SA_CNT_IFP_HW_VAL: 1098 ipsec_accel_sa_lifetime_hw(sav, ifp, &lft_l); 1099 ipsec_accel_sa_lifetime_update(&lft_l, &lft_s); 1100 break; 1101 1102 case IF_SA_CNT_TOTAL_SW_VAL: 1103 lft_l.allocations = (uint32_t)counter_u64_fetch( 1104 sav->accel_lft_sw); 1105 lft_l.bytes = counter_u64_fetch(sav->accel_lft_sw + 1); 1106 lft_l.usetime = sav->accel_firstused; 1107 break; 1108 1109 case IF_SA_CNT_TOTAL_HW_VAL: 1110 IFNET_RLOCK_ASSERT(); 1111 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 1112 if ((i->flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) != 1113 IFP_HS_HANDLED) 1114 continue; 1115 ifp1 = i->ifp; 1116 p = ifp1->if_ipsec_accel_m->if_sa_cnt; 1117 if (p == NULL) 1118 continue; 1119 memset(&lft_s, 0, sizeof(lft_s)); 1120 if (sahtree_trackerp != NULL) 1121 ipsec_sahtree_runlock(sahtree_trackerp); 1122 error = p(ifp1, sav, i->drv_spi, i->ifdata, &lft_s); 1123 if (sahtree_trackerp != NULL) 1124 ipsec_sahtree_rlock(sahtree_trackerp); 1125 if (error == 0) 1126 ipsec_accel_sa_lifetime_update(&lft_l, &lft_s); 1127 } 1128 break; 1129 } 1130 1131 if (error == 0) { 1132 if ((op & IF_SA_CNT_UPD) == 0) 1133 memset(lft_c, 0, sizeof(*lft_c)); 1134 ipsec_accel_sa_lifetime_update(lft_c, &lft_l); 1135 } 1136 1137 return (error); 1138 } 1139 1140 static void 1141 ipsec_accel_sync_imp(void) 1142 { 1143 taskqueue_drain_all(ipsec_accel_tq); 1144 } 1145 1146 static struct mbuf * 1147 ipsec_accel_key_setaccelif_impl(struct secasvar *sav) 1148 { 1149 struct mbuf *m, *m1; 1150 struct ifp_handle_sav *i; 1151 struct epoch_tracker et; 1152 1153 if (sav->accel_ifname != NULL) 1154 return (key_setaccelif(sav->accel_ifname)); 1155 1156 m = m1 = NULL; 1157 1158 NET_EPOCH_ENTER(et); 1159 CK_LIST_FOREACH(i, &sav->accel_ifps, sav_link) { 1160 if ((i->flags & (IFP_HS_HANDLED | IFP_HS_REJECTED)) == 1161 IFP_HS_HANDLED) { 1162 m1 = key_setaccelif(if_name(i->ifp)); 1163 if (m == NULL) 1164 m = m1; 1165 else if (m1 != NULL) 1166 m_cat(m, m1); 1167 } 1168 } 1169 NET_EPOCH_EXIT(et); 1170 return (m); 1171 } 1172 1173 static bool 1174 ipsec_accel_fill_xh_impl(if_t ifp, uint32_t drv_spi, struct xform_history *xh) 1175 { 1176 struct ifp_handle_sav *i; 1177 1178 if (drv_spi < IPSEC_ACCEL_DRV_SPI_MIN || 1179 drv_spi > IPSEC_ACCEL_DRV_SPI_MAX) 1180 return (false); 1181 1182 i = DRVSPI_SA_PCTRIE_LOOKUP(&drv_spi_pctrie, drv_spi); 1183 if (i == NULL) 1184 return (false); 1185 memcpy(xh, &i->xfh, sizeof(*xh)); 1186 return (true); 1187 } 1188 1189 #endif /* IPSEC_OFFLOAD */ 1190