xform_ipcomp.c revision 1.71
1 /* $NetBSD: xform_ipcomp.c,v 1.71 2022/05/22 11:39:08 riastradh Exp $ */ 2 /* $FreeBSD: xform_ipcomp.c,v 1.1.4.1 2003/01/24 05:11:36 sam Exp $ */ 3 /* $OpenBSD: ip_ipcomp.c,v 1.1 2001/07/05 12:08:52 jjbg Exp $ */ 4 5 /* 6 * Copyright (c) 2001 Jean-Jacques Bernard-Gundol (jj (at) wabbitt.org) 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: xform_ipcomp.c,v 1.71 2022/05/22 11:39:08 riastradh Exp $"); 34 35 /* IP payload compression protocol (IPComp), see RFC 2393 */ 36 #if defined(_KERNEL_OPT) 37 #include "opt_inet.h" 38 #endif 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/mbuf.h> 43 #include <sys/socket.h> 44 #include <sys/kernel.h> 45 #include <sys/protosw.h> 46 #include <sys/sysctl.h> 47 #include <sys/pool.h> 48 #include <sys/pserialize.h> 49 50 #include <netinet/in.h> 51 #include <netinet/in_systm.h> 52 #include <netinet/ip.h> 53 #include <netinet/ip_var.h> 54 55 #include <net/route.h> 56 #include <netipsec/ipsec.h> 57 #include <netipsec/ipsec_private.h> 58 #include <netipsec/xform.h> 59 60 #ifdef INET6 61 #include <netinet/ip6.h> 62 #include <netipsec/ipsec6.h> 63 #endif 64 65 #include <netipsec/ipcomp.h> 66 #include <netipsec/ipcomp_var.h> 67 68 #include <netipsec/key.h> 69 #include <netipsec/key_debug.h> 70 71 #include <opencrypto/cryptodev.h> 72 #include <opencrypto/deflate.h> 73 74 percpu_t *ipcompstat_percpu; 75 76 int ipcomp_enable = 1; 77 78 static void ipcomp_input_cb(struct cryptop *crp); 79 static void ipcomp_output_cb(struct cryptop *crp); 80 81 const uint8_t ipcomp_stats[256] = { SADB_CALG_STATS_INIT }; 82 83 static pool_cache_t ipcomp_tdb_crypto_pool_cache; 84 85 const struct comp_algo * 86 ipcomp_algorithm_lookup(int alg) 87 { 88 switch (alg) { 89 case SADB_X_CALG_DEFLATE: 90 return &comp_algo_deflate_nogrow; 91 } 92 return NULL; 93 } 94 95 /* 96 * ipcomp_init() is called when an CPI is being set up. 97 */ 98 static int 99 ipcomp_init(struct secasvar *sav, const struct xformsw *xsp) 100 { 101 const struct comp_algo *tcomp; 102 struct cryptoini cric; 103 int ses; 104 105 /* NB: algorithm really comes in alg_enc and not alg_comp! */ 106 tcomp = ipcomp_algorithm_lookup(sav->alg_enc); 107 if (tcomp == NULL) { 108 DPRINTF("unsupported compression algorithm %d\n", 109 sav->alg_comp); 110 return EINVAL; 111 } 112 sav->alg_comp = sav->alg_enc; /* set for doing histogram */ 113 sav->tdb_xform = xsp; 114 sav->tdb_compalgxform = tcomp; 115 116 /* Initialize crypto session */ 117 memset(&cric, 0, sizeof(cric)); 118 cric.cri_alg = sav->tdb_compalgxform->type; 119 120 ses = crypto_newsession(&sav->tdb_cryptoid, &cric, crypto_support); 121 return ses; 122 } 123 124 /* 125 * ipcomp_zeroize() used when IPCA is deleted 126 */ 127 static void 128 ipcomp_zeroize(struct secasvar *sav) 129 { 130 131 (void)crypto_freesession(sav->tdb_cryptoid); 132 sav->tdb_cryptoid = 0; 133 } 134 135 /* 136 * ipcomp_input() gets called to uncompress an input packet 137 */ 138 static int 139 ipcomp_input(struct mbuf *m, struct secasvar *sav, int skip, int protoff) 140 { 141 struct tdb_crypto *tc; 142 struct cryptodesc *crdc; 143 struct cryptop *crp; 144 int error, hlen = IPCOMP_HLENGTH, stat = IPCOMP_STAT_CRYPTO; 145 146 KASSERT(skip + hlen <= m->m_pkthdr.len); 147 148 /* Get crypto descriptors */ 149 crp = crypto_getreq(1); 150 if (crp == NULL) { 151 DPRINTF("no crypto descriptors\n"); 152 error = ENOBUFS; 153 goto error_m; 154 } 155 /* Get IPsec-specific opaque pointer */ 156 tc = pool_cache_get(ipcomp_tdb_crypto_pool_cache, PR_NOWAIT); 157 if (tc == NULL) { 158 DPRINTF("cannot allocate tdb_crypto\n"); 159 error = ENOBUFS; 160 goto error_crp; 161 } 162 163 error = m_makewritable(&m, 0, m->m_pkthdr.len, M_NOWAIT); 164 if (error) { 165 DPRINTF("m_makewritable failed\n"); 166 goto error_tc; 167 } 168 169 { 170 int s = pserialize_read_enter(); 171 172 /* 173 * Take another reference to the SA for opencrypto callback. 174 */ 175 if (__predict_false(sav->state == SADB_SASTATE_DEAD)) { 176 pserialize_read_exit(s); 177 stat = IPCOMP_STAT_NOTDB; 178 error = ENOENT; 179 goto error_tc; 180 } 181 KEY_SA_REF(sav); 182 pserialize_read_exit(s); 183 } 184 185 crdc = crp->crp_desc; 186 187 crdc->crd_skip = skip + hlen; 188 crdc->crd_len = m->m_pkthdr.len - (skip + hlen); 189 crdc->crd_inject = 0; /* unused */ 190 191 /* Decompression operation */ 192 crdc->crd_alg = sav->tdb_compalgxform->type; 193 194 /* Crypto operation descriptor */ 195 crp->crp_ilen = m->m_pkthdr.len - (skip + hlen); 196 crp->crp_olen = MCLBYTES; /* hint to decompression code */ 197 crp->crp_flags = CRYPTO_F_IMBUF; 198 crp->crp_buf = m; 199 crp->crp_callback = ipcomp_input_cb; 200 crp->crp_sid = sav->tdb_cryptoid; 201 crp->crp_opaque = tc; 202 203 /* These are passed as-is to the callback */ 204 tc->tc_spi = sav->spi; 205 tc->tc_dst = sav->sah->saidx.dst; 206 tc->tc_proto = sav->sah->saidx.proto; 207 tc->tc_protoff = protoff; 208 tc->tc_skip = skip; 209 tc->tc_sav = sav; 210 211 return crypto_dispatch(crp); 212 213 error_tc: 214 pool_cache_put(ipcomp_tdb_crypto_pool_cache, tc); 215 error_crp: 216 crypto_freereq(crp); 217 error_m: 218 m_freem(m); 219 IPCOMP_STATINC(stat); 220 return error; 221 } 222 223 #ifdef INET6 224 #define IPSEC_COMMON_INPUT_CB(m, sav, skip, protoff) do { \ 225 if (saidx->dst.sa.sa_family == AF_INET6) { \ 226 (void)ipsec6_common_input_cb(m, sav, skip, protoff); \ 227 } else { \ 228 (void)ipsec4_common_input_cb(m, sav, skip, protoff); \ 229 } \ 230 } while (0) 231 #else 232 #define IPSEC_COMMON_INPUT_CB(m, sav, skip, protoff) \ 233 ((void)ipsec4_common_input_cb(m, sav, skip, protoff)) 234 #endif 235 236 /* 237 * IPComp input callback from the crypto driver. 238 */ 239 static void 240 ipcomp_input_cb(struct cryptop *crp) 241 { 242 char buf[IPSEC_ADDRSTRLEN]; 243 struct tdb_crypto *tc; 244 int skip, protoff; 245 struct mbuf *m; 246 struct secasvar *sav; 247 struct secasindex *saidx __diagused; 248 int hlen = IPCOMP_HLENGTH, clen; 249 uint8_t nproto; 250 struct ipcomp *ipc; 251 IPSEC_DECLARE_LOCK_VARIABLE; 252 253 KASSERT(crp->crp_opaque != NULL); 254 tc = crp->crp_opaque; 255 skip = tc->tc_skip; 256 protoff = tc->tc_protoff; 257 m = crp->crp_buf; 258 259 IPSEC_ACQUIRE_GLOBAL_LOCKS(); 260 261 sav = tc->tc_sav; 262 saidx = &sav->sah->saidx; 263 KASSERTMSG(saidx->dst.sa.sa_family == AF_INET || 264 saidx->dst.sa.sa_family == AF_INET6, 265 "unexpected protocol family %u", saidx->dst.sa.sa_family); 266 267 /* Check for crypto errors */ 268 if (crp->crp_etype) { 269 /* Reset the session ID */ 270 if (sav->tdb_cryptoid != 0) 271 sav->tdb_cryptoid = crp->crp_sid; 272 273 if (crp->crp_etype == EAGAIN) { 274 KEY_SA_UNREF(&sav); 275 IPSEC_RELEASE_GLOBAL_LOCKS(); 276 (void)crypto_dispatch(crp); 277 return; 278 } 279 280 IPCOMP_STATINC(IPCOMP_STAT_NOXFORM); 281 DPRINTF("crypto error %d\n", crp->crp_etype); 282 goto bad; 283 } 284 285 IPCOMP_STATINC(IPCOMP_STAT_HIST + ipcomp_stats[sav->alg_comp]); 286 287 /* Update the counters */ 288 IPCOMP_STATADD(IPCOMP_STAT_IBYTES, m->m_pkthdr.len - skip - hlen); 289 290 /* Length of data after processing */ 291 clen = crp->crp_olen; 292 293 /* Release the crypto descriptors */ 294 pool_cache_put(ipcomp_tdb_crypto_pool_cache, tc); 295 tc = NULL; 296 crypto_freereq(crp); 297 crp = NULL; 298 299 /* In case it's not done already, adjust the size of the mbuf chain */ 300 m->m_pkthdr.len = clen + hlen + skip; 301 302 /* 303 * Get the next protocol field. 304 * 305 * XXX: Really, we should use m_copydata instead of m_pullup. 306 */ 307 if (m->m_len < skip + hlen && (m = m_pullup(m, skip + hlen)) == 0) { 308 IPCOMP_STATINC(IPCOMP_STAT_HDROPS); 309 DPRINTF("m_pullup failed\n"); 310 goto bad; 311 } 312 ipc = (struct ipcomp *)(mtod(m, uint8_t *) + skip); 313 nproto = ipc->comp_nxt; 314 315 switch (nproto) { 316 case IPPROTO_IPCOMP: 317 case IPPROTO_AH: 318 case IPPROTO_ESP: 319 IPCOMP_STATINC(IPCOMP_STAT_HDROPS); 320 DPRINTF("nested ipcomp, IPCA %s/%08lx\n", 321 ipsec_address(&sav->sah->saidx.dst, buf, sizeof(buf)), 322 (u_long) ntohl(sav->spi)); 323 goto bad; 324 default: 325 break; 326 } 327 328 /* Remove the IPCOMP header */ 329 if (m_striphdr(m, skip, hlen) != 0) { 330 IPCOMP_STATINC(IPCOMP_STAT_HDROPS); 331 DPRINTF("bad mbuf chain, IPCA %s/%08lx\n", 332 ipsec_address(&sav->sah->saidx.dst, buf, sizeof(buf)), 333 (u_long) ntohl(sav->spi)); 334 goto bad; 335 } 336 337 /* Restore the Next Protocol field */ 338 m_copyback(m, protoff, sizeof(nproto), &nproto); 339 340 IPSEC_COMMON_INPUT_CB(m, sav, skip, protoff); 341 342 KEY_SA_UNREF(&sav); 343 IPSEC_RELEASE_GLOBAL_LOCKS(); 344 return; 345 346 bad: 347 if (sav) 348 KEY_SA_UNREF(&sav); 349 IPSEC_RELEASE_GLOBAL_LOCKS(); 350 if (m) 351 m_freem(m); 352 if (tc != NULL) 353 pool_cache_put(ipcomp_tdb_crypto_pool_cache, tc); 354 if (crp) 355 crypto_freereq(crp); 356 } 357 358 /* 359 * IPComp output routine, called by ipsec[46]_process_packet() 360 */ 361 static int 362 ipcomp_output(struct mbuf *m, const struct ipsecrequest *isr, 363 struct secasvar *sav, int skip, int protoff, int flags) 364 { 365 char buf[IPSEC_ADDRSTRLEN]; 366 const struct comp_algo *ipcompx; 367 int error, ralen, hlen, maxpacketsize; 368 struct cryptodesc *crdc; 369 struct cryptop *crp; 370 struct tdb_crypto *tc; 371 372 KASSERT(sav != NULL); 373 KASSERT(sav->tdb_compalgxform != NULL); 374 ipcompx = sav->tdb_compalgxform; 375 376 /* Raw payload length before comp. */ 377 ralen = m->m_pkthdr.len - skip; 378 379 /* Don't process the packet if it is too short */ 380 if (ralen < ipcompx->minlen) { 381 IPCOMP_STATINC(IPCOMP_STAT_MINLEN); 382 return ipsec_process_done(m, isr, sav, 0); 383 } 384 385 hlen = IPCOMP_HLENGTH; 386 387 IPCOMP_STATINC(IPCOMP_STAT_OUTPUT); 388 389 /* Check for maximum packet size violations. */ 390 switch (sav->sah->saidx.dst.sa.sa_family) { 391 #ifdef INET 392 case AF_INET: 393 maxpacketsize = IP_MAXPACKET; 394 break; 395 #endif 396 #ifdef INET6 397 case AF_INET6: 398 maxpacketsize = IPV6_MAXPACKET; 399 break; 400 #endif 401 default: 402 IPCOMP_STATINC(IPCOMP_STAT_NOPF); 403 DPRINTF("unknown/unsupported protocol family %d" 404 ", IPCA %s/%08lx\n", 405 sav->sah->saidx.dst.sa.sa_family, 406 ipsec_address(&sav->sah->saidx.dst, buf, sizeof(buf)), 407 (u_long) ntohl(sav->spi)); 408 error = EPFNOSUPPORT; 409 goto bad; 410 } 411 if (skip + hlen + ralen > maxpacketsize) { 412 IPCOMP_STATINC(IPCOMP_STAT_TOOBIG); 413 DPRINTF("packet in IPCA %s/%08lx got too big " 414 "(len %u, max len %u)\n", 415 ipsec_address(&sav->sah->saidx.dst, buf, sizeof(buf)), 416 (u_long) ntohl(sav->spi), 417 skip + hlen + ralen, maxpacketsize); 418 error = EMSGSIZE; 419 goto bad; 420 } 421 422 /* Update the counters */ 423 IPCOMP_STATADD(IPCOMP_STAT_OBYTES, m->m_pkthdr.len - skip); 424 425 m = m_clone(m); 426 if (m == NULL) { 427 IPCOMP_STATINC(IPCOMP_STAT_HDROPS); 428 DPRINTF("cannot clone mbuf chain, IPCA %s/%08lx\n", 429 ipsec_address(&sav->sah->saidx.dst, buf, sizeof(buf)), 430 (u_long) ntohl(sav->spi)); 431 error = ENOBUFS; 432 goto bad; 433 } 434 435 /* Ok now, we can pass to the crypto processing */ 436 437 /* Get crypto descriptors */ 438 crp = crypto_getreq(1); 439 if (crp == NULL) { 440 IPCOMP_STATINC(IPCOMP_STAT_CRYPTO); 441 DPRINTF("failed to acquire crypto descriptor\n"); 442 error = ENOBUFS; 443 goto bad; 444 } 445 crdc = crp->crp_desc; 446 447 /* Compression descriptor */ 448 crdc->crd_skip = skip; 449 crdc->crd_len = m->m_pkthdr.len - skip; 450 crdc->crd_flags = CRD_F_COMP; 451 crdc->crd_inject = skip; 452 453 /* Compression operation */ 454 crdc->crd_alg = ipcompx->type; 455 456 /* IPsec-specific opaque crypto info */ 457 tc = pool_cache_get(ipcomp_tdb_crypto_pool_cache, PR_NOWAIT); 458 if (tc == NULL) { 459 IPCOMP_STATINC(IPCOMP_STAT_CRYPTO); 460 DPRINTF("failed to allocate tdb_crypto\n"); 461 crypto_freereq(crp); 462 error = ENOBUFS; 463 goto bad; 464 } 465 466 { 467 int s = pserialize_read_enter(); 468 469 /* 470 * Take another reference to the SP and the SA for opencrypto callback. 471 */ 472 if (__predict_false(isr->sp->state == IPSEC_SPSTATE_DEAD || 473 sav->state == SADB_SASTATE_DEAD)) { 474 pserialize_read_exit(s); 475 pool_cache_put(ipcomp_tdb_crypto_pool_cache, tc); 476 crypto_freereq(crp); 477 IPCOMP_STATINC(IPCOMP_STAT_NOTDB); 478 error = ENOENT; 479 goto bad; 480 } 481 KEY_SP_REF(isr->sp); 482 KEY_SA_REF(sav); 483 pserialize_read_exit(s); 484 } 485 486 tc->tc_isr = isr; 487 tc->tc_spi = sav->spi; 488 tc->tc_dst = sav->sah->saidx.dst; 489 tc->tc_proto = sav->sah->saidx.proto; 490 tc->tc_skip = skip; 491 tc->tc_protoff = protoff; 492 tc->tc_flags = flags; 493 tc->tc_sav = sav; 494 495 /* Crypto operation descriptor */ 496 crp->crp_ilen = m->m_pkthdr.len; /* Total input length */ 497 crp->crp_flags = CRYPTO_F_IMBUF; 498 crp->crp_buf = m; 499 crp->crp_callback = ipcomp_output_cb; 500 crp->crp_opaque = tc; 501 crp->crp_sid = sav->tdb_cryptoid; 502 503 return crypto_dispatch(crp); 504 505 bad: 506 if (m) 507 m_freem(m); 508 return error; 509 } 510 511 /* 512 * IPComp output callback from the crypto driver. 513 */ 514 static void 515 ipcomp_output_cb(struct cryptop *crp) 516 { 517 char buf[IPSEC_ADDRSTRLEN]; 518 struct tdb_crypto *tc; 519 const struct ipsecrequest *isr; 520 struct secasvar *sav; 521 struct mbuf *m, *mo; 522 int skip, rlen, roff, flags; 523 uint8_t prot; 524 uint16_t cpi; 525 struct ipcomp * ipcomp; 526 IPSEC_DECLARE_LOCK_VARIABLE; 527 528 KASSERT(crp->crp_opaque != NULL); 529 tc = crp->crp_opaque; 530 m = crp->crp_buf; 531 skip = tc->tc_skip; 532 rlen = crp->crp_ilen - skip; 533 534 IPSEC_ACQUIRE_GLOBAL_LOCKS(); 535 536 isr = tc->tc_isr; 537 sav = tc->tc_sav; 538 539 /* Check for crypto errors */ 540 if (crp->crp_etype) { 541 /* Reset session ID */ 542 if (sav->tdb_cryptoid != 0) 543 sav->tdb_cryptoid = crp->crp_sid; 544 545 if (crp->crp_etype == EAGAIN) { 546 IPSEC_RELEASE_GLOBAL_LOCKS(); 547 (void)crypto_dispatch(crp); 548 return; 549 } 550 IPCOMP_STATINC(IPCOMP_STAT_NOXFORM); 551 DPRINTF("crypto error %d\n", crp->crp_etype); 552 goto bad; 553 } 554 555 IPCOMP_STATINC(IPCOMP_STAT_HIST + ipcomp_stats[sav->alg_comp]); 556 557 if (rlen > crp->crp_olen) { 558 /* Inject IPCOMP header */ 559 mo = m_makespace(m, skip, IPCOMP_HLENGTH, &roff); 560 if (mo == NULL) { 561 IPCOMP_STATINC(IPCOMP_STAT_WRAP); 562 DPRINTF("failed to inject IPCOMP header for " 563 "IPCA %s/%08lx\n", 564 ipsec_address(&sav->sah->saidx.dst, buf, 565 sizeof(buf)), (u_long) ntohl(sav->spi)); 566 goto bad; 567 } 568 ipcomp = (struct ipcomp *)(mtod(mo, char *) + roff); 569 570 /* Initialize the IPCOMP header */ 571 /* XXX alignment always correct? */ 572 switch (sav->sah->saidx.dst.sa.sa_family) { 573 #ifdef INET 574 case AF_INET: 575 ipcomp->comp_nxt = mtod(m, struct ip *)->ip_p; 576 break; 577 #endif 578 #ifdef INET6 579 case AF_INET6: 580 ipcomp->comp_nxt = mtod(m, struct ip6_hdr *)->ip6_nxt; 581 break; 582 #endif 583 } 584 ipcomp->comp_flags = 0; 585 586 if ((sav->flags & SADB_X_EXT_RAWCPI) == 0) 587 cpi = sav->alg_enc; 588 else 589 cpi = ntohl(sav->spi) & 0xffff; 590 ipcomp->comp_cpi = htons(cpi); 591 592 /* Fix Next Protocol in IPv4/IPv6 header */ 593 prot = IPPROTO_IPCOMP; 594 m_copyback(m, tc->tc_protoff, sizeof(prot), &prot); 595 596 /* Adjust the length in the IP header */ 597 switch (sav->sah->saidx.dst.sa.sa_family) { 598 #ifdef INET 599 case AF_INET: 600 mtod(m, struct ip *)->ip_len = htons(m->m_pkthdr.len); 601 break; 602 #endif 603 #ifdef INET6 604 case AF_INET6: 605 mtod(m, struct ip6_hdr *)->ip6_plen = 606 htons(m->m_pkthdr.len - sizeof(struct ip6_hdr)); 607 break; 608 #endif 609 default: 610 IPCOMP_STATINC(IPCOMP_STAT_NOPF); 611 DPRINTF("unknown/unsupported protocol " 612 "family %d, IPCA %s/%08lx\n", 613 sav->sah->saidx.dst.sa.sa_family, 614 ipsec_address(&sav->sah->saidx.dst, buf, 615 sizeof(buf)), (u_long) ntohl(sav->spi)); 616 goto bad; 617 } 618 } else { 619 /* compression was useless, we have lost time */ 620 IPCOMP_STATINC(IPCOMP_STAT_USELESS); 621 DPRINTF("compression was useless: initial size was %d " 622 "and compressed size is %d\n", rlen, crp->crp_olen); 623 } 624 625 flags = tc->tc_flags; 626 /* Release the crypto descriptor */ 627 pool_cache_put(ipcomp_tdb_crypto_pool_cache, tc); 628 crypto_freereq(crp); 629 630 /* NB: m is reclaimed by ipsec_process_done. */ 631 (void)ipsec_process_done(m, isr, sav, flags); 632 KEY_SA_UNREF(&sav); 633 KEY_SP_UNREF(&isr->sp); 634 IPSEC_RELEASE_GLOBAL_LOCKS(); 635 return; 636 637 bad: 638 if (sav) 639 KEY_SA_UNREF(&sav); 640 KEY_SP_UNREF(&isr->sp); 641 IPSEC_RELEASE_GLOBAL_LOCKS(); 642 if (m) 643 m_freem(m); 644 pool_cache_put(ipcomp_tdb_crypto_pool_cache, tc); 645 crypto_freereq(crp); 646 } 647 648 static struct xformsw ipcomp_xformsw = { 649 .xf_type = XF_IPCOMP, 650 .xf_flags = XFT_COMP, 651 .xf_name = "IPcomp", 652 .xf_init = ipcomp_init, 653 .xf_zeroize = ipcomp_zeroize, 654 .xf_input = ipcomp_input, 655 .xf_output = ipcomp_output, 656 .xf_next = NULL, 657 }; 658 659 void 660 ipcomp_attach(void) 661 { 662 ipcompstat_percpu = percpu_alloc(sizeof(uint64_t) * IPCOMP_NSTATS); 663 ipcomp_tdb_crypto_pool_cache = pool_cache_init(sizeof(struct tdb_crypto), 664 coherency_unit, 0, 0, "ipcomp_tdb_crypto", NULL, IPL_SOFTNET, 665 NULL, NULL, NULL); 666 xform_register(&ipcomp_xformsw); 667 } 668
Indexes created Tue Sep 23 07:09:52 GMT 2025