1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <sys/param.h> 27 #include <sys/types.h> 28 #include <sys/stream.h> 29 #include <sys/strsubr.h> 30 #include <sys/strsun.h> 31 #include <sys/stropts.h> 32 #include <sys/zone.h> 33 #include <sys/vnode.h> 34 #include <sys/sysmacros.h> 35 #define _SUN_TPI_VERSION 2 36 #include <sys/tihdr.h> 37 #include <sys/ddi.h> 38 #include <sys/sunddi.h> 39 #include <sys/mkdev.h> 40 #include <sys/debug.h> 41 #include <sys/kmem.h> 42 #include <sys/cmn_err.h> 43 #include <sys/suntpi.h> 44 #include <sys/policy.h> 45 46 #include <sys/socket.h> 47 #include <netinet/in.h> 48 #include <net/pfkeyv2.h> 49 #include <net/pfpolicy.h> 50 51 #include <inet/common.h> 52 #include <netinet/ip6.h> 53 #include <inet/ip.h> 54 #include <inet/ip6.h> 55 #include <inet/mi.h> 56 #include <inet/proto_set.h> 57 #include <inet/nd.h> 58 #include <inet/ip_if.h> 59 #include <inet/tun.h> 60 #include <inet/optcom.h> 61 #include <inet/ipsec_info.h> 62 #include <inet/ipsec_impl.h> 63 #include <inet/spdsock.h> 64 #include <inet/sadb.h> 65 66 #include <sys/isa_defs.h> 67 68 #include <c2/audit.h> 69 70 /* 71 * This is a transport provider for the PF_POLICY IPsec policy 72 * management socket, which provides a management interface into the 73 * SPD, allowing policy rules to be added, deleted, and queried. 74 * 75 * This effectively replaces the old private SIOC*IPSECONFIG ioctls 76 * with an extensible interface which will hopefully be public some 77 * day. 78 * 79 * See <net/pfpolicy.h> for more details on the protocol. 80 * 81 * We link against drv/ip and call directly into it to manipulate the 82 * SPD; see ipsec_impl.h for the policy data structures and spd.c for 83 * the code which maintains them. 84 * 85 * The MT model of this is QPAIR with the addition of some explicit 86 * locking to protect system-wide policy data structures. 87 */ 88 89 static vmem_t *spdsock_vmem; /* for minor numbers. */ 90 91 #define ALIGNED64(x) IS_P2ALIGNED((x), sizeof (uint64_t)) 92 93 /* Default structure copied into T_INFO_ACK messages (from rts.c...) */ 94 static struct T_info_ack spdsock_g_t_info_ack = { 95 T_INFO_ACK, 96 T_INFINITE, /* TSDU_size. Maximum size messages. */ 97 T_INVALID, /* ETSDU_size. No expedited data. */ 98 T_INVALID, /* CDATA_size. No connect data. */ 99 T_INVALID, /* DDATA_size. No disconnect data. */ 100 0, /* ADDR_size. */ 101 0, /* OPT_size. No user-settable options */ 102 64 * 1024, /* TIDU_size. spdsock allows maximum size messages. */ 103 T_COTS, /* SERV_type. spdsock supports connection oriented. */ 104 TS_UNBND, /* CURRENT_state. This is set from spdsock_state. */ 105 (XPG4_1) /* Provider flags */ 106 }; 107 108 /* Named Dispatch Parameter Management Structure */ 109 typedef struct spdsockparam_s { 110 uint_t spdsock_param_min; 111 uint_t spdsock_param_max; 112 uint_t spdsock_param_value; 113 char *spdsock_param_name; 114 } spdsockparam_t; 115 116 /* 117 * Table of NDD variables supported by spdsock. These are loaded into 118 * spdsock_g_nd in spdsock_init_nd. 119 * All of these are alterable, within the min/max values given, at run time. 120 */ 121 static spdsockparam_t lcl_param_arr[] = { 122 /* min max value name */ 123 { 4096, 65536, 8192, "spdsock_xmit_hiwat"}, 124 { 0, 65536, 1024, "spdsock_xmit_lowat"}, 125 { 4096, 65536, 8192, "spdsock_recv_hiwat"}, 126 { 65536, 1024*1024*1024, 256*1024, "spdsock_max_buf"}, 127 { 0, 3, 0, "spdsock_debug"}, 128 }; 129 #define spds_xmit_hiwat spds_params[0].spdsock_param_value 130 #define spds_xmit_lowat spds_params[1].spdsock_param_value 131 #define spds_recv_hiwat spds_params[2].spdsock_param_value 132 #define spds_max_buf spds_params[3].spdsock_param_value 133 #define spds_debug spds_params[4].spdsock_param_value 134 135 #define ss0dbg(a) printf a 136 /* NOTE: != 0 instead of > 0 so lint doesn't complain. */ 137 #define ss1dbg(spds, a) if (spds->spds_debug != 0) printf a 138 #define ss2dbg(spds, a) if (spds->spds_debug > 1) printf a 139 #define ss3dbg(spds, a) if (spds->spds_debug > 2) printf a 140 141 #define RESET_SPDSOCK_DUMP_POLHEAD(ss, iph) { \ 142 ASSERT(RW_READ_HELD(&(iph)->iph_lock)); \ 143 (ss)->spdsock_dump_head = (iph); \ 144 (ss)->spdsock_dump_gen = (iph)->iph_gen; \ 145 (ss)->spdsock_dump_cur_type = 0; \ 146 (ss)->spdsock_dump_cur_af = IPSEC_AF_V4; \ 147 (ss)->spdsock_dump_cur_rule = NULL; \ 148 (ss)->spdsock_dump_count = 0; \ 149 (ss)->spdsock_dump_cur_chain = 0; \ 150 } 151 152 static int spdsock_close(queue_t *); 153 static int spdsock_open(queue_t *, dev_t *, int, int, cred_t *); 154 static void spdsock_wput(queue_t *, mblk_t *); 155 static void spdsock_wsrv(queue_t *); 156 static void spdsock_rsrv(queue_t *); 157 static void *spdsock_stack_init(netstackid_t stackid, netstack_t *ns); 158 static void spdsock_stack_fini(netstackid_t stackid, void *arg); 159 static void spdsock_loadcheck(void *); 160 static void spdsock_merge_algs(spd_stack_t *); 161 static void spdsock_flush_one(ipsec_policy_head_t *, netstack_t *); 162 static mblk_t *spdsock_dump_next_record(spdsock_t *); 163 164 static struct module_info info = { 165 5138, "spdsock", 1, INFPSZ, 512, 128 166 }; 167 168 static struct qinit rinit = { 169 NULL, (pfi_t)spdsock_rsrv, spdsock_open, spdsock_close, 170 NULL, &info 171 }; 172 173 static struct qinit winit = { 174 (pfi_t)spdsock_wput, (pfi_t)spdsock_wsrv, NULL, NULL, NULL, &info 175 }; 176 177 struct streamtab spdsockinfo = { 178 &rinit, &winit 179 }; 180 181 /* mapping from alg type to protocol number, as per RFC 2407 */ 182 static const uint_t algproto[] = { 183 PROTO_IPSEC_AH, 184 PROTO_IPSEC_ESP, 185 }; 186 187 #define NALGPROTOS (sizeof (algproto) / sizeof (algproto[0])) 188 189 /* mapping from kernel exec mode to spdsock exec mode */ 190 static const uint_t execmodes[] = { 191 SPD_ALG_EXEC_MODE_SYNC, 192 SPD_ALG_EXEC_MODE_ASYNC 193 }; 194 195 #define NEXECMODES (sizeof (execmodes) / sizeof (execmodes[0])) 196 197 #define ALL_ACTIVE_POLHEADS ((ipsec_policy_head_t *)-1) 198 #define ALL_INACTIVE_POLHEADS ((ipsec_policy_head_t *)-2) 199 200 #define ITP_NAME(itp) (itp != NULL ? itp->itp_name : NULL) 201 202 /* ARGSUSED */ 203 static int 204 spdsock_param_get(q, mp, cp, cr) 205 queue_t *q; 206 mblk_t *mp; 207 caddr_t cp; 208 cred_t *cr; 209 { 210 spdsockparam_t *spdsockpa = (spdsockparam_t *)cp; 211 uint_t value; 212 spdsock_t *ss = (spdsock_t *)q->q_ptr; 213 spd_stack_t *spds = ss->spdsock_spds; 214 215 mutex_enter(&spds->spds_param_lock); 216 value = spdsockpa->spdsock_param_value; 217 mutex_exit(&spds->spds_param_lock); 218 219 (void) mi_mpprintf(mp, "%u", value); 220 return (0); 221 } 222 223 /* This routine sets an NDD variable in a spdsockparam_t structure. */ 224 /* ARGSUSED */ 225 static int 226 spdsock_param_set(q, mp, value, cp, cr) 227 queue_t *q; 228 mblk_t *mp; 229 char *value; 230 caddr_t cp; 231 cred_t *cr; 232 { 233 ulong_t new_value; 234 spdsockparam_t *spdsockpa = (spdsockparam_t *)cp; 235 spdsock_t *ss = (spdsock_t *)q->q_ptr; 236 spd_stack_t *spds = ss->spdsock_spds; 237 238 /* Convert the value from a string into a long integer. */ 239 if (ddi_strtoul(value, NULL, 10, &new_value) != 0) 240 return (EINVAL); 241 242 mutex_enter(&spds->spds_param_lock); 243 /* 244 * Fail the request if the new value does not lie within the 245 * required bounds. 246 */ 247 if (new_value < spdsockpa->spdsock_param_min || 248 new_value > spdsockpa->spdsock_param_max) { 249 mutex_exit(&spds->spds_param_lock); 250 return (EINVAL); 251 } 252 253 /* Set the new value */ 254 spdsockpa->spdsock_param_value = new_value; 255 mutex_exit(&spds->spds_param_lock); 256 257 return (0); 258 } 259 260 /* 261 * Initialize at module load time 262 */ 263 boolean_t 264 spdsock_ddi_init(void) 265 { 266 spdsock_max_optsize = optcom_max_optsize( 267 spdsock_opt_obj.odb_opt_des_arr, spdsock_opt_obj.odb_opt_arr_cnt); 268 269 spdsock_vmem = vmem_create("spdsock", (void *)1, MAXMIN, 1, 270 NULL, NULL, NULL, 1, VM_SLEEP | VMC_IDENTIFIER); 271 272 /* 273 * We want to be informed each time a stack is created or 274 * destroyed in the kernel, so we can maintain the 275 * set of spd_stack_t's. 276 */ 277 netstack_register(NS_SPDSOCK, spdsock_stack_init, NULL, 278 spdsock_stack_fini); 279 280 return (B_TRUE); 281 } 282 283 /* 284 * Walk through the param array specified registering each element with the 285 * named dispatch handler. 286 */ 287 static boolean_t 288 spdsock_param_register(IDP *ndp, spdsockparam_t *ssp, int cnt) 289 { 290 for (; cnt-- > 0; ssp++) { 291 if (ssp->spdsock_param_name != NULL && 292 ssp->spdsock_param_name[0]) { 293 if (!nd_load(ndp, 294 ssp->spdsock_param_name, 295 spdsock_param_get, spdsock_param_set, 296 (caddr_t)ssp)) { 297 nd_free(ndp); 298 return (B_FALSE); 299 } 300 } 301 } 302 return (B_TRUE); 303 } 304 305 /* 306 * Initialize for each stack instance 307 */ 308 /* ARGSUSED */ 309 static void * 310 spdsock_stack_init(netstackid_t stackid, netstack_t *ns) 311 { 312 spd_stack_t *spds; 313 spdsockparam_t *ssp; 314 315 spds = (spd_stack_t *)kmem_zalloc(sizeof (*spds), KM_SLEEP); 316 spds->spds_netstack = ns; 317 318 ASSERT(spds->spds_g_nd == NULL); 319 320 ssp = (spdsockparam_t *)kmem_alloc(sizeof (lcl_param_arr), KM_SLEEP); 321 spds->spds_params = ssp; 322 bcopy(lcl_param_arr, ssp, sizeof (lcl_param_arr)); 323 324 (void) spdsock_param_register(&spds->spds_g_nd, ssp, 325 A_CNT(lcl_param_arr)); 326 327 mutex_init(&spds->spds_param_lock, NULL, MUTEX_DEFAULT, NULL); 328 mutex_init(&spds->spds_alg_lock, NULL, MUTEX_DEFAULT, NULL); 329 330 return (spds); 331 } 332 333 void 334 spdsock_ddi_destroy(void) 335 { 336 vmem_destroy(spdsock_vmem); 337 338 netstack_unregister(NS_SPDSOCK); 339 } 340 341 /* ARGSUSED */ 342 static void 343 spdsock_stack_fini(netstackid_t stackid, void *arg) 344 { 345 spd_stack_t *spds = (spd_stack_t *)arg; 346 347 freemsg(spds->spds_mp_algs); 348 mutex_destroy(&spds->spds_param_lock); 349 mutex_destroy(&spds->spds_alg_lock); 350 nd_free(&spds->spds_g_nd); 351 kmem_free(spds->spds_params, sizeof (lcl_param_arr)); 352 spds->spds_params = NULL; 353 354 kmem_free(spds, sizeof (*spds)); 355 } 356 357 /* 358 * NOTE: large quantities of this should be shared with keysock. 359 * Would be nice to combine some of this into a common module, but 360 * not possible given time pressures. 361 */ 362 363 /* 364 * High-level reality checking of extensions. 365 */ 366 /* ARGSUSED */ /* XXX */ 367 static boolean_t 368 ext_check(spd_ext_t *ext) 369 { 370 spd_if_t *tunname = (spd_if_t *)ext; 371 int i; 372 char *idstr; 373 374 if (ext->spd_ext_type == SPD_EXT_TUN_NAME) { 375 /* (NOTE: Modified from SADB_EXT_IDENTITY..) */ 376 377 /* 378 * Make sure the strings in these identities are 379 * null-terminated. Let's "proactively" null-terminate the 380 * string at the last byte if it's not terminated sooner. 381 */ 382 i = SPD_64TO8(tunname->spd_if_len) - sizeof (spd_if_t); 383 idstr = (char *)(tunname + 1); 384 while (*idstr != '\0' && i > 0) { 385 i--; 386 idstr++; 387 } 388 if (i == 0) { 389 /* 390 * I.e., if the bozo user didn't NULL-terminate the 391 * string... 392 */ 393 idstr--; 394 *idstr = '\0'; 395 } 396 } 397 return (B_TRUE); /* For now... */ 398 } 399 400 401 402 /* Return values for spdsock_get_ext(). */ 403 #define KGE_OK 0 404 #define KGE_DUP 1 405 #define KGE_UNK 2 406 #define KGE_LEN 3 407 #define KGE_CHK 4 408 409 /* 410 * Parse basic extension headers and return in the passed-in pointer vector. 411 * Return values include: 412 * 413 * KGE_OK Everything's nice and parsed out. 414 * If there are no extensions, place NULL in extv[0]. 415 * KGE_DUP There is a duplicate extension. 416 * First instance in appropriate bin. First duplicate in 417 * extv[0]. 418 * KGE_UNK Unknown extension type encountered. extv[0] contains 419 * unknown header. 420 * KGE_LEN Extension length error. 421 * KGE_CHK High-level reality check failed on specific extension. 422 * 423 * My apologies for some of the pointer arithmetic in here. I'm thinking 424 * like an assembly programmer, yet trying to make the compiler happy. 425 */ 426 static int 427 spdsock_get_ext(spd_ext_t *extv[], spd_msg_t *basehdr, uint_t msgsize) 428 { 429 bzero(extv, sizeof (spd_ext_t *) * (SPD_EXT_MAX + 1)); 430 431 /* Use extv[0] as the "current working pointer". */ 432 433 extv[0] = (spd_ext_t *)(basehdr + 1); 434 435 while (extv[0] < (spd_ext_t *)(((uint8_t *)basehdr) + msgsize)) { 436 /* Check for unknown headers. */ 437 if (extv[0]->spd_ext_type == 0 || 438 extv[0]->spd_ext_type > SPD_EXT_MAX) 439 return (KGE_UNK); 440 441 /* 442 * Check length. Use uint64_t because extlen is in units 443 * of 64-bit words. If length goes beyond the msgsize, 444 * return an error. (Zero length also qualifies here.) 445 */ 446 if (extv[0]->spd_ext_len == 0 || 447 (void *)((uint64_t *)extv[0] + extv[0]->spd_ext_len) > 448 (void *)((uint8_t *)basehdr + msgsize)) 449 return (KGE_LEN); 450 451 /* Check for redundant headers. */ 452 if (extv[extv[0]->spd_ext_type] != NULL) 453 return (KGE_DUP); 454 455 /* 456 * Reality check the extension if possible at the spdsock 457 * level. 458 */ 459 if (!ext_check(extv[0])) 460 return (KGE_CHK); 461 462 /* If I make it here, assign the appropriate bin. */ 463 extv[extv[0]->spd_ext_type] = extv[0]; 464 465 /* Advance pointer (See above for uint64_t ptr reasoning.) */ 466 extv[0] = (spd_ext_t *) 467 ((uint64_t *)extv[0] + extv[0]->spd_ext_len); 468 } 469 470 /* Everything's cool. */ 471 472 /* 473 * If extv[0] == NULL, then there are no extension headers in this 474 * message. Ensure that this is the case. 475 */ 476 if (extv[0] == (spd_ext_t *)(basehdr + 1)) 477 extv[0] = NULL; 478 479 return (KGE_OK); 480 } 481 482 static const int bad_ext_diag[] = { 483 SPD_DIAGNOSTIC_MALFORMED_LCLPORT, 484 SPD_DIAGNOSTIC_MALFORMED_REMPORT, 485 SPD_DIAGNOSTIC_MALFORMED_PROTO, 486 SPD_DIAGNOSTIC_MALFORMED_LCLADDR, 487 SPD_DIAGNOSTIC_MALFORMED_REMADDR, 488 SPD_DIAGNOSTIC_MALFORMED_ACTION, 489 SPD_DIAGNOSTIC_MALFORMED_RULE, 490 SPD_DIAGNOSTIC_MALFORMED_RULESET, 491 SPD_DIAGNOSTIC_MALFORMED_ICMP_TYPECODE 492 }; 493 494 static const int dup_ext_diag[] = { 495 SPD_DIAGNOSTIC_DUPLICATE_LCLPORT, 496 SPD_DIAGNOSTIC_DUPLICATE_REMPORT, 497 SPD_DIAGNOSTIC_DUPLICATE_PROTO, 498 SPD_DIAGNOSTIC_DUPLICATE_LCLADDR, 499 SPD_DIAGNOSTIC_DUPLICATE_REMADDR, 500 SPD_DIAGNOSTIC_DUPLICATE_ACTION, 501 SPD_DIAGNOSTIC_DUPLICATE_RULE, 502 SPD_DIAGNOSTIC_DUPLICATE_RULESET, 503 SPD_DIAGNOSTIC_DUPLICATE_ICMP_TYPECODE 504 }; 505 506 /* 507 * Transmit a PF_POLICY error message to the instance either pointed to 508 * by ks, the instance with serial number serial, or more, depending. 509 * 510 * The faulty message (or a reasonable facsimile thereof) is in mp. 511 * This function will free mp or recycle it for delivery, thereby causing 512 * the stream head to free it. 513 */ 514 static void 515 spdsock_error(queue_t *q, mblk_t *mp, int error, int diagnostic) 516 { 517 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 518 519 ASSERT(mp->b_datap->db_type == M_DATA); 520 521 if (spmsg->spd_msg_type < SPD_MIN || 522 spmsg->spd_msg_type > SPD_MAX) 523 spmsg->spd_msg_type = SPD_RESERVED; 524 525 /* 526 * Strip out extension headers. 527 */ 528 ASSERT(mp->b_rptr + sizeof (*spmsg) <= mp->b_datap->db_lim); 529 mp->b_wptr = mp->b_rptr + sizeof (*spmsg); 530 spmsg->spd_msg_len = SPD_8TO64(sizeof (spd_msg_t)); 531 spmsg->spd_msg_errno = (uint8_t)error; 532 spmsg->spd_msg_diagnostic = (uint16_t)diagnostic; 533 534 qreply(q, mp); 535 } 536 537 static void 538 spdsock_diag(queue_t *q, mblk_t *mp, int diagnostic) 539 { 540 spdsock_error(q, mp, EINVAL, diagnostic); 541 } 542 543 static void 544 spd_echo(queue_t *q, mblk_t *mp) 545 { 546 qreply(q, mp); 547 } 548 549 /* 550 * Do NOT consume a reference to itp. 551 */ 552 /*ARGSUSED*/ 553 static void 554 spdsock_flush_node(ipsec_tun_pol_t *itp, void *cookie, netstack_t *ns) 555 { 556 boolean_t active = (boolean_t)cookie; 557 ipsec_policy_head_t *iph; 558 559 iph = active ? itp->itp_policy : itp->itp_inactive; 560 IPPH_REFHOLD(iph); 561 mutex_enter(&itp->itp_lock); 562 spdsock_flush_one(iph, ns); 563 if (active) 564 itp->itp_flags &= ~ITPF_PFLAGS; 565 else 566 itp->itp_flags &= ~ITPF_IFLAGS; 567 mutex_exit(&itp->itp_lock); 568 } 569 570 /* 571 * Clear out one polhead. 572 */ 573 static void 574 spdsock_flush_one(ipsec_policy_head_t *iph, netstack_t *ns) 575 { 576 rw_enter(&iph->iph_lock, RW_WRITER); 577 ipsec_polhead_flush(iph, ns); 578 rw_exit(&iph->iph_lock); 579 IPPH_REFRELE(iph, ns); 580 } 581 582 static void 583 spdsock_flush(queue_t *q, ipsec_policy_head_t *iph, ipsec_tun_pol_t *itp, 584 mblk_t *mp) 585 { 586 boolean_t active; 587 spdsock_t *ss = (spdsock_t *)q->q_ptr; 588 netstack_t *ns = ss->spdsock_spds->spds_netstack; 589 590 if (iph != ALL_ACTIVE_POLHEADS && iph != ALL_INACTIVE_POLHEADS) { 591 spdsock_flush_one(iph, ns); 592 if (audit_active) { 593 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 594 cred_t *cr; 595 pid_t cpid; 596 597 cr = msg_getcred(mp, &cpid); 598 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 599 audit_pf_policy(SPD_FLUSH, cr, ns, 600 ITP_NAME(itp), active, 0, cpid); 601 } 602 } else { 603 active = (iph == ALL_ACTIVE_POLHEADS); 604 605 /* First flush the global policy. */ 606 spdsock_flush_one(active ? ipsec_system_policy(ns) : 607 ipsec_inactive_policy(ns), ns); 608 if (audit_active) { 609 cred_t *cr; 610 pid_t cpid; 611 612 cr = msg_getcred(mp, &cpid); 613 audit_pf_policy(SPD_FLUSH, cr, ns, NULL, 614 active, 0, cpid); 615 } 616 /* Then flush every tunnel's appropriate one. */ 617 itp_walk(spdsock_flush_node, (void *)active, ns); 618 if (audit_active) { 619 cred_t *cr; 620 pid_t cpid; 621 622 cr = msg_getcred(mp, &cpid); 623 audit_pf_policy(SPD_FLUSH, cr, ns, 624 "all tunnels", active, 0, cpid); 625 } 626 } 627 628 spd_echo(q, mp); 629 } 630 631 static boolean_t 632 spdsock_ext_to_sel(spd_ext_t **extv, ipsec_selkey_t *sel, int *diag) 633 { 634 bzero(sel, sizeof (*sel)); 635 636 if (extv[SPD_EXT_PROTO] != NULL) { 637 struct spd_proto *pr = 638 (struct spd_proto *)extv[SPD_EXT_PROTO]; 639 sel->ipsl_proto = pr->spd_proto_number; 640 sel->ipsl_valid |= IPSL_PROTOCOL; 641 } 642 if (extv[SPD_EXT_LCLPORT] != NULL) { 643 struct spd_portrange *pr = 644 (struct spd_portrange *)extv[SPD_EXT_LCLPORT]; 645 sel->ipsl_lport = pr->spd_ports_minport; 646 sel->ipsl_valid |= IPSL_LOCAL_PORT; 647 } 648 if (extv[SPD_EXT_REMPORT] != NULL) { 649 struct spd_portrange *pr = 650 (struct spd_portrange *)extv[SPD_EXT_REMPORT]; 651 sel->ipsl_rport = pr->spd_ports_minport; 652 sel->ipsl_valid |= IPSL_REMOTE_PORT; 653 } 654 655 if (extv[SPD_EXT_ICMP_TYPECODE] != NULL) { 656 struct spd_typecode *tc= 657 (struct spd_typecode *)extv[SPD_EXT_ICMP_TYPECODE]; 658 659 sel->ipsl_valid |= IPSL_ICMP_TYPE; 660 sel->ipsl_icmp_type = tc->spd_typecode_type; 661 if (tc->spd_typecode_type_end < tc->spd_typecode_type) 662 sel->ipsl_icmp_type_end = tc->spd_typecode_type; 663 else 664 sel->ipsl_icmp_type_end = tc->spd_typecode_type_end; 665 666 if (tc->spd_typecode_code != 255) { 667 sel->ipsl_valid |= IPSL_ICMP_CODE; 668 sel->ipsl_icmp_code = tc->spd_typecode_code; 669 if (tc->spd_typecode_code_end < tc->spd_typecode_code) 670 sel->ipsl_icmp_code_end = tc->spd_typecode_code; 671 else 672 sel->ipsl_icmp_code_end = 673 tc->spd_typecode_code_end; 674 } 675 } 676 #define ADDR2SEL(sel, extv, field, pfield, extn, bit) \ 677 if ((extv)[(extn)] != NULL) { \ 678 uint_t addrlen; \ 679 struct spd_address *ap = \ 680 (struct spd_address *)((extv)[(extn)]); \ 681 addrlen = (ap->spd_address_af == AF_INET6) ? \ 682 IPV6_ADDR_LEN : IP_ADDR_LEN; \ 683 if (SPD_64TO8(ap->spd_address_len) < \ 684 (addrlen + sizeof (*ap))) { \ 685 *diag = SPD_DIAGNOSTIC_BAD_ADDR_LEN; \ 686 return (B_FALSE); \ 687 } \ 688 bcopy((ap+1), &((sel)->field), addrlen); \ 689 (sel)->pfield = ap->spd_address_prefixlen; \ 690 (sel)->ipsl_valid |= (bit); \ 691 (sel)->ipsl_valid |= (ap->spd_address_af == AF_INET6) ? \ 692 IPSL_IPV6 : IPSL_IPV4; \ 693 } 694 695 ADDR2SEL(sel, extv, ipsl_local, ipsl_local_pfxlen, 696 SPD_EXT_LCLADDR, IPSL_LOCAL_ADDR); 697 ADDR2SEL(sel, extv, ipsl_remote, ipsl_remote_pfxlen, 698 SPD_EXT_REMADDR, IPSL_REMOTE_ADDR); 699 700 if ((sel->ipsl_valid & (IPSL_IPV6|IPSL_IPV4)) == 701 (IPSL_IPV6|IPSL_IPV4)) { 702 *diag = SPD_DIAGNOSTIC_MIXED_AF; 703 return (B_FALSE); 704 } 705 706 #undef ADDR2SEL 707 708 return (B_TRUE); 709 } 710 711 static boolean_t 712 spd_convert_type(uint32_t type, ipsec_act_t *act) 713 { 714 switch (type) { 715 case SPD_ACTTYPE_DROP: 716 act->ipa_type = IPSEC_ACT_DISCARD; 717 return (B_TRUE); 718 719 case SPD_ACTTYPE_PASS: 720 act->ipa_type = IPSEC_ACT_CLEAR; 721 return (B_TRUE); 722 723 case SPD_ACTTYPE_IPSEC: 724 act->ipa_type = IPSEC_ACT_APPLY; 725 return (B_TRUE); 726 } 727 return (B_FALSE); 728 } 729 730 static boolean_t 731 spd_convert_flags(uint32_t flags, ipsec_act_t *act) 732 { 733 /* 734 * Note use of !! for boolean canonicalization. 735 */ 736 act->ipa_apply.ipp_use_ah = !!(flags & SPD_APPLY_AH); 737 act->ipa_apply.ipp_use_esp = !!(flags & SPD_APPLY_ESP); 738 act->ipa_apply.ipp_use_espa = !!(flags & SPD_APPLY_ESPA); 739 act->ipa_apply.ipp_use_se = !!(flags & SPD_APPLY_SE); 740 act->ipa_apply.ipp_use_unique = !!(flags & SPD_APPLY_UNIQUE); 741 return (B_TRUE); 742 } 743 744 static void 745 spdsock_reset_act(ipsec_act_t *act) 746 { 747 bzero(act, sizeof (*act)); 748 act->ipa_apply.ipp_espe_maxbits = IPSEC_MAX_KEYBITS; 749 act->ipa_apply.ipp_espa_maxbits = IPSEC_MAX_KEYBITS; 750 act->ipa_apply.ipp_ah_maxbits = IPSEC_MAX_KEYBITS; 751 } 752 753 /* 754 * Sanity check action against reality, and shrink-wrap key sizes.. 755 */ 756 static boolean_t 757 spdsock_check_action(ipsec_act_t *act, boolean_t tunnel_polhead, int *diag, 758 spd_stack_t *spds) 759 { 760 if (tunnel_polhead && act->ipa_apply.ipp_use_unique) { 761 *diag = SPD_DIAGNOSTIC_ADD_INCON_FLAGS; 762 return (B_FALSE); 763 } 764 if ((act->ipa_type != IPSEC_ACT_APPLY) && 765 (act->ipa_apply.ipp_use_ah || 766 act->ipa_apply.ipp_use_esp || 767 act->ipa_apply.ipp_use_espa || 768 act->ipa_apply.ipp_use_se || 769 act->ipa_apply.ipp_use_unique)) { 770 *diag = SPD_DIAGNOSTIC_ADD_INCON_FLAGS; 771 return (B_FALSE); 772 } 773 if ((act->ipa_type == IPSEC_ACT_APPLY) && 774 !act->ipa_apply.ipp_use_ah && 775 !act->ipa_apply.ipp_use_esp) { 776 *diag = SPD_DIAGNOSTIC_ADD_INCON_FLAGS; 777 return (B_FALSE); 778 } 779 return (ipsec_check_action(act, diag, spds->spds_netstack)); 780 } 781 782 /* 783 * We may be short a few error checks here.. 784 */ 785 static boolean_t 786 spdsock_ext_to_actvec(spd_ext_t **extv, ipsec_act_t **actpp, uint_t *nactp, 787 int *diag, spd_stack_t *spds) 788 { 789 struct spd_ext_actions *sactp = 790 (struct spd_ext_actions *)extv[SPD_EXT_ACTION]; 791 ipsec_act_t act, *actp, *endactp; 792 struct spd_attribute *attrp, *endattrp; 793 uint64_t *endp; 794 int nact; 795 boolean_t tunnel_polhead; 796 797 tunnel_polhead = (extv[SPD_EXT_TUN_NAME] != NULL && 798 (((struct spd_rule *)extv[SPD_EXT_RULE])->spd_rule_flags & 799 SPD_RULE_FLAG_TUNNEL)); 800 801 *actpp = NULL; 802 *nactp = 0; 803 804 if (sactp == NULL) { 805 *diag = SPD_DIAGNOSTIC_NO_ACTION_EXT; 806 return (B_FALSE); 807 } 808 809 /* 810 * Parse the "action" extension and convert into an action chain. 811 */ 812 813 nact = sactp->spd_actions_count; 814 815 endp = (uint64_t *)sactp; 816 endp += sactp->spd_actions_len; 817 endattrp = (struct spd_attribute *)endp; 818 819 actp = kmem_alloc(sizeof (*actp) * nact, KM_NOSLEEP); 820 if (actp == NULL) { 821 *diag = SPD_DIAGNOSTIC_ADD_NO_MEM; 822 return (B_FALSE); 823 } 824 *actpp = actp; 825 *nactp = nact; 826 endactp = actp + nact; 827 828 spdsock_reset_act(&act); 829 attrp = (struct spd_attribute *)(&sactp[1]); 830 831 for (; attrp < endattrp; attrp++) { 832 switch (attrp->spd_attr_tag) { 833 case SPD_ATTR_NOP: 834 break; 835 836 case SPD_ATTR_EMPTY: 837 spdsock_reset_act(&act); 838 break; 839 840 case SPD_ATTR_END: 841 attrp = endattrp; 842 /* FALLTHRU */ 843 case SPD_ATTR_NEXT: 844 if (actp >= endactp) { 845 *diag = SPD_DIAGNOSTIC_ADD_WRONG_ACT_COUNT; 846 goto fail; 847 } 848 if (!spdsock_check_action(&act, tunnel_polhead, 849 diag, spds)) 850 goto fail; 851 *actp++ = act; 852 spdsock_reset_act(&act); 853 break; 854 855 case SPD_ATTR_TYPE: 856 if (!spd_convert_type(attrp->spd_attr_value, &act)) { 857 *diag = SPD_DIAGNOSTIC_ADD_BAD_TYPE; 858 goto fail; 859 } 860 break; 861 862 case SPD_ATTR_FLAGS: 863 if (!tunnel_polhead && extv[SPD_EXT_TUN_NAME] != NULL) { 864 /* 865 * Set "sa unique" for transport-mode 866 * tunnels whether we want to or not. 867 */ 868 attrp->spd_attr_value |= SPD_APPLY_UNIQUE; 869 } 870 if (!spd_convert_flags(attrp->spd_attr_value, &act)) { 871 *diag = SPD_DIAGNOSTIC_ADD_BAD_FLAGS; 872 goto fail; 873 } 874 break; 875 876 case SPD_ATTR_AH_AUTH: 877 if (attrp->spd_attr_value == 0) { 878 *diag = SPD_DIAGNOSTIC_UNSUPP_AH_ALG; 879 goto fail; 880 } 881 act.ipa_apply.ipp_auth_alg = attrp->spd_attr_value; 882 break; 883 884 case SPD_ATTR_ESP_ENCR: 885 if (attrp->spd_attr_value == 0) { 886 *diag = SPD_DIAGNOSTIC_UNSUPP_ESP_ENCR_ALG; 887 goto fail; 888 } 889 act.ipa_apply.ipp_encr_alg = attrp->spd_attr_value; 890 break; 891 892 case SPD_ATTR_ESP_AUTH: 893 if (attrp->spd_attr_value == 0) { 894 *diag = SPD_DIAGNOSTIC_UNSUPP_ESP_AUTH_ALG; 895 goto fail; 896 } 897 act.ipa_apply.ipp_esp_auth_alg = attrp->spd_attr_value; 898 break; 899 900 case SPD_ATTR_ENCR_MINBITS: 901 act.ipa_apply.ipp_espe_minbits = attrp->spd_attr_value; 902 break; 903 904 case SPD_ATTR_ENCR_MAXBITS: 905 act.ipa_apply.ipp_espe_maxbits = attrp->spd_attr_value; 906 break; 907 908 case SPD_ATTR_AH_MINBITS: 909 act.ipa_apply.ipp_ah_minbits = attrp->spd_attr_value; 910 break; 911 912 case SPD_ATTR_AH_MAXBITS: 913 act.ipa_apply.ipp_ah_maxbits = attrp->spd_attr_value; 914 break; 915 916 case SPD_ATTR_ESPA_MINBITS: 917 act.ipa_apply.ipp_espa_minbits = attrp->spd_attr_value; 918 break; 919 920 case SPD_ATTR_ESPA_MAXBITS: 921 act.ipa_apply.ipp_espa_maxbits = attrp->spd_attr_value; 922 break; 923 924 case SPD_ATTR_LIFE_SOFT_TIME: 925 case SPD_ATTR_LIFE_HARD_TIME: 926 case SPD_ATTR_LIFE_SOFT_BYTES: 927 case SPD_ATTR_LIFE_HARD_BYTES: 928 break; 929 930 case SPD_ATTR_KM_PROTO: 931 act.ipa_apply.ipp_km_proto = attrp->spd_attr_value; 932 break; 933 934 case SPD_ATTR_KM_COOKIE: 935 act.ipa_apply.ipp_km_cookie = attrp->spd_attr_value; 936 break; 937 938 case SPD_ATTR_REPLAY_DEPTH: 939 act.ipa_apply.ipp_replay_depth = attrp->spd_attr_value; 940 break; 941 } 942 } 943 if (actp != endactp) { 944 *diag = SPD_DIAGNOSTIC_ADD_WRONG_ACT_COUNT; 945 goto fail; 946 } 947 948 return (B_TRUE); 949 fail: 950 ipsec_actvec_free(*actpp, nact); 951 *actpp = NULL; 952 return (B_FALSE); 953 } 954 955 typedef struct 956 { 957 ipsec_policy_t *pol; 958 int dir; 959 } tmprule_t; 960 961 static int 962 mkrule(ipsec_policy_head_t *iph, struct spd_rule *rule, 963 ipsec_selkey_t *sel, ipsec_act_t *actp, int nact, uint_t dir, uint_t af, 964 tmprule_t **rp, uint64_t *index, spd_stack_t *spds) 965 { 966 ipsec_policy_t *pol; 967 968 sel->ipsl_valid &= ~(IPSL_IPV6|IPSL_IPV4); 969 sel->ipsl_valid |= af; 970 971 pol = ipsec_policy_create(sel, actp, nact, rule->spd_rule_priority, 972 index, spds->spds_netstack); 973 if (pol == NULL) 974 return (ENOMEM); 975 976 (*rp)->pol = pol; 977 (*rp)->dir = dir; 978 (*rp)++; 979 980 if (!ipsec_check_policy(iph, pol, dir)) 981 return (EEXIST); 982 983 rule->spd_rule_index = pol->ipsp_index; 984 return (0); 985 } 986 987 static int 988 mkrulepair(ipsec_policy_head_t *iph, struct spd_rule *rule, 989 ipsec_selkey_t *sel, ipsec_act_t *actp, int nact, uint_t dir, uint_t afs, 990 tmprule_t **rp, uint64_t *index, spd_stack_t *spds) 991 { 992 int error; 993 994 if (afs & IPSL_IPV4) { 995 error = mkrule(iph, rule, sel, actp, nact, dir, IPSL_IPV4, rp, 996 index, spds); 997 if (error != 0) 998 return (error); 999 } 1000 if (afs & IPSL_IPV6) { 1001 error = mkrule(iph, rule, sel, actp, nact, dir, IPSL_IPV6, rp, 1002 index, spds); 1003 if (error != 0) 1004 return (error); 1005 } 1006 return (0); 1007 } 1008 1009 1010 static void 1011 spdsock_addrule(queue_t *q, ipsec_policy_head_t *iph, mblk_t *mp, 1012 spd_ext_t **extv, ipsec_tun_pol_t *itp) 1013 { 1014 ipsec_selkey_t sel; 1015 ipsec_act_t *actp; 1016 uint_t nact; 1017 int diag = 0, error, afs; 1018 struct spd_rule *rule = (struct spd_rule *)extv[SPD_EXT_RULE]; 1019 tmprule_t rules[4], *rulep = &rules[0]; 1020 boolean_t tunnel_mode, empty_itp, active; 1021 uint64_t *index = (itp == NULL) ? NULL : &itp->itp_next_policy_index; 1022 spdsock_t *ss = (spdsock_t *)q->q_ptr; 1023 spd_stack_t *spds = ss->spdsock_spds; 1024 1025 if (rule == NULL) { 1026 spdsock_diag(q, mp, SPD_DIAGNOSTIC_NO_RULE_EXT); 1027 if (audit_active) { 1028 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 1029 cred_t *cr; 1030 pid_t cpid; 1031 1032 cr = msg_getcred(mp, &cpid); 1033 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 1034 audit_pf_policy(SPD_ADDRULE, cr, 1035 spds->spds_netstack, ITP_NAME(itp), active, 1036 SPD_DIAGNOSTIC_NO_RULE_EXT, cpid); 1037 } 1038 return; 1039 } 1040 1041 tunnel_mode = (rule->spd_rule_flags & SPD_RULE_FLAG_TUNNEL); 1042 1043 if (itp != NULL) { 1044 mutex_enter(&itp->itp_lock); 1045 ASSERT(itp->itp_policy == iph || itp->itp_inactive == iph); 1046 active = (itp->itp_policy == iph); 1047 if (ITP_P_ISACTIVE(itp, iph)) { 1048 /* Check for mix-and-match of tunnel/transport. */ 1049 if ((tunnel_mode && !ITP_P_ISTUNNEL(itp, iph)) || 1050 (!tunnel_mode && ITP_P_ISTUNNEL(itp, iph))) { 1051 mutex_exit(&itp->itp_lock); 1052 spdsock_error(q, mp, EBUSY, 0); 1053 return; 1054 } 1055 empty_itp = B_FALSE; 1056 } else { 1057 empty_itp = B_TRUE; 1058 itp->itp_flags = active ? ITPF_P_ACTIVE : ITPF_I_ACTIVE; 1059 if (tunnel_mode) 1060 itp->itp_flags |= active ? ITPF_P_TUNNEL : 1061 ITPF_I_TUNNEL; 1062 } 1063 } else { 1064 empty_itp = B_FALSE; 1065 } 1066 1067 if (rule->spd_rule_index != 0) { 1068 diag = SPD_DIAGNOSTIC_INVALID_RULE_INDEX; 1069 error = EINVAL; 1070 goto fail2; 1071 } 1072 1073 if (!spdsock_ext_to_sel(extv, &sel, &diag)) { 1074 error = EINVAL; 1075 goto fail2; 1076 } 1077 1078 if (itp != NULL) { 1079 if (tunnel_mode) { 1080 if (sel.ipsl_valid & 1081 (IPSL_REMOTE_PORT | IPSL_LOCAL_PORT)) { 1082 itp->itp_flags |= active ? 1083 ITPF_P_PER_PORT_SECURITY : 1084 ITPF_I_PER_PORT_SECURITY; 1085 } 1086 } else { 1087 /* 1088 * For now, we don't allow transport-mode on a tunnel 1089 * with ANY specific selectors. Bail if we have such 1090 * a request. 1091 */ 1092 if (sel.ipsl_valid & IPSL_WILDCARD) { 1093 diag = SPD_DIAGNOSTIC_NO_TUNNEL_SELECTORS; 1094 error = EINVAL; 1095 goto fail2; 1096 } 1097 } 1098 } 1099 1100 if (!spdsock_ext_to_actvec(extv, &actp, &nact, &diag, spds)) { 1101 error = EINVAL; 1102 goto fail2; 1103 } 1104 /* 1105 * If no addresses were specified, add both. 1106 */ 1107 afs = sel.ipsl_valid & (IPSL_IPV6|IPSL_IPV4); 1108 if (afs == 0) 1109 afs = (IPSL_IPV6|IPSL_IPV4); 1110 1111 rw_enter(&iph->iph_lock, RW_WRITER); 1112 1113 if (rule->spd_rule_flags & SPD_RULE_FLAG_OUTBOUND) { 1114 error = mkrulepair(iph, rule, &sel, actp, nact, 1115 IPSEC_TYPE_OUTBOUND, afs, &rulep, index, spds); 1116 if (error != 0) 1117 goto fail; 1118 } 1119 1120 if (rule->spd_rule_flags & SPD_RULE_FLAG_INBOUND) { 1121 error = mkrulepair(iph, rule, &sel, actp, nact, 1122 IPSEC_TYPE_INBOUND, afs, &rulep, index, spds); 1123 if (error != 0) 1124 goto fail; 1125 } 1126 1127 while ((--rulep) >= &rules[0]) { 1128 ipsec_enter_policy(iph, rulep->pol, rulep->dir, 1129 spds->spds_netstack); 1130 } 1131 rw_exit(&iph->iph_lock); 1132 if (itp != NULL) 1133 mutex_exit(&itp->itp_lock); 1134 1135 ipsec_actvec_free(actp, nact); 1136 spd_echo(q, mp); 1137 if (audit_active) { 1138 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 1139 cred_t *cr; 1140 pid_t cpid; 1141 1142 cr = msg_getcred(mp, &cpid); 1143 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 1144 audit_pf_policy(SPD_ADDRULE, cr, spds->spds_netstack, 1145 ITP_NAME(itp), active, 0, cpid); 1146 } 1147 return; 1148 1149 fail: 1150 rw_exit(&iph->iph_lock); 1151 while ((--rulep) >= &rules[0]) { 1152 IPPOL_REFRELE(rulep->pol, spds->spds_netstack); 1153 } 1154 ipsec_actvec_free(actp, nact); 1155 fail2: 1156 if (itp != NULL) { 1157 if (empty_itp) 1158 itp->itp_flags = 0; 1159 mutex_exit(&itp->itp_lock); 1160 } 1161 spdsock_error(q, mp, error, diag); 1162 if (audit_active) { 1163 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 1164 cred_t *cr; 1165 pid_t cpid; 1166 1167 cr = msg_getcred(mp, &cpid); 1168 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 1169 audit_pf_policy(SPD_ADDRULE, cr, spds->spds_netstack, 1170 ITP_NAME(itp), active, error, cpid); 1171 } 1172 } 1173 1174 void 1175 spdsock_deleterule(queue_t *q, ipsec_policy_head_t *iph, mblk_t *mp, 1176 spd_ext_t **extv, ipsec_tun_pol_t *itp) 1177 { 1178 ipsec_selkey_t sel; 1179 struct spd_rule *rule = (struct spd_rule *)extv[SPD_EXT_RULE]; 1180 int err, diag = 0; 1181 spdsock_t *ss = (spdsock_t *)q->q_ptr; 1182 netstack_t *ns = ss->spdsock_spds->spds_netstack; 1183 1184 if (rule == NULL) { 1185 spdsock_diag(q, mp, SPD_DIAGNOSTIC_NO_RULE_EXT); 1186 if (audit_active) { 1187 boolean_t active; 1188 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 1189 cred_t *cr; 1190 pid_t cpid; 1191 1192 cr = msg_getcred(mp, &cpid); 1193 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 1194 audit_pf_policy(SPD_DELETERULE, cr, ns, 1195 ITP_NAME(itp), active, SPD_DIAGNOSTIC_NO_RULE_EXT, 1196 cpid); 1197 } 1198 return; 1199 } 1200 1201 /* 1202 * Must enter itp_lock first to avoid deadlock. See tun.c's 1203 * set_sec_simple() for the other case of itp_lock and iph_lock. 1204 */ 1205 if (itp != NULL) 1206 mutex_enter(&itp->itp_lock); 1207 1208 if (rule->spd_rule_index != 0) { 1209 if (ipsec_policy_delete_index(iph, rule->spd_rule_index, ns) != 1210 0) { 1211 err = ESRCH; 1212 goto fail; 1213 } 1214 } else { 1215 if (!spdsock_ext_to_sel(extv, &sel, &diag)) { 1216 err = EINVAL; /* diag already set... */ 1217 goto fail; 1218 } 1219 1220 if ((rule->spd_rule_flags & SPD_RULE_FLAG_INBOUND) && 1221 !ipsec_policy_delete(iph, &sel, IPSEC_TYPE_INBOUND, ns)) { 1222 err = ESRCH; 1223 goto fail; 1224 } 1225 1226 if ((rule->spd_rule_flags & SPD_RULE_FLAG_OUTBOUND) && 1227 !ipsec_policy_delete(iph, &sel, IPSEC_TYPE_OUTBOUND, ns)) { 1228 err = ESRCH; 1229 goto fail; 1230 } 1231 } 1232 1233 if (itp != NULL) { 1234 ASSERT(iph == itp->itp_policy || iph == itp->itp_inactive); 1235 rw_enter(&iph->iph_lock, RW_READER); 1236 if (avl_numnodes(&iph->iph_rulebyid) == 0) { 1237 if (iph == itp->itp_policy) 1238 itp->itp_flags &= ~ITPF_PFLAGS; 1239 else 1240 itp->itp_flags &= ~ITPF_IFLAGS; 1241 } 1242 /* Can exit locks in any order. */ 1243 rw_exit(&iph->iph_lock); 1244 mutex_exit(&itp->itp_lock); 1245 } 1246 spd_echo(q, mp); 1247 if (audit_active) { 1248 boolean_t active; 1249 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 1250 cred_t *cr; 1251 pid_t cpid; 1252 1253 cr = msg_getcred(mp, &cpid); 1254 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 1255 audit_pf_policy(SPD_DELETERULE, cr, ns, ITP_NAME(itp), 1256 active, 0, cpid); 1257 } 1258 return; 1259 fail: 1260 if (itp != NULL) 1261 mutex_exit(&itp->itp_lock); 1262 spdsock_error(q, mp, err, diag); 1263 if (audit_active) { 1264 boolean_t active; 1265 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 1266 cred_t *cr; 1267 pid_t cpid; 1268 1269 cr = msg_getcred(mp, &cpid); 1270 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 1271 audit_pf_policy(SPD_DELETERULE, cr, ns, ITP_NAME(itp), 1272 active, err, cpid); 1273 } 1274 } 1275 1276 /* Do NOT consume a reference to itp. */ 1277 /* ARGSUSED */ 1278 static void 1279 spdsock_flip_node(ipsec_tun_pol_t *itp, void *ignoreme, netstack_t *ns) 1280 { 1281 mutex_enter(&itp->itp_lock); 1282 ITPF_SWAP(itp->itp_flags); 1283 ipsec_swap_policy(itp->itp_policy, itp->itp_inactive, ns); 1284 mutex_exit(&itp->itp_lock); 1285 } 1286 1287 void 1288 spdsock_flip(queue_t *q, mblk_t *mp, spd_if_t *tunname) 1289 { 1290 char *tname; 1291 ipsec_tun_pol_t *itp; 1292 spdsock_t *ss = (spdsock_t *)q->q_ptr; 1293 netstack_t *ns = ss->spdsock_spds->spds_netstack; 1294 1295 if (tunname != NULL) { 1296 tname = (char *)tunname->spd_if_name; 1297 if (*tname == '\0') { 1298 /* can't fail */ 1299 ipsec_swap_global_policy(ns); 1300 if (audit_active) { 1301 boolean_t active; 1302 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 1303 cred_t *cr; 1304 pid_t cpid; 1305 1306 cr = msg_getcred(mp, &cpid); 1307 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 1308 audit_pf_policy(SPD_FLIP, cr, ns, 1309 NULL, active, 0, cpid); 1310 } 1311 itp_walk(spdsock_flip_node, NULL, ns); 1312 if (audit_active) { 1313 boolean_t active; 1314 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 1315 cred_t *cr; 1316 pid_t cpid; 1317 1318 cr = msg_getcred(mp, &cpid); 1319 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 1320 audit_pf_policy(SPD_FLIP, cr, ns, 1321 "all tunnels", active, 0, cpid); 1322 } 1323 } else { 1324 itp = get_tunnel_policy(tname, ns); 1325 if (itp == NULL) { 1326 /* Better idea for "tunnel not found"? */ 1327 spdsock_error(q, mp, ESRCH, 0); 1328 if (audit_active) { 1329 boolean_t active; 1330 spd_msg_t *spmsg = 1331 (spd_msg_t *)mp->b_rptr; 1332 cred_t *cr; 1333 pid_t cpid; 1334 1335 cr = msg_getcred(mp, &cpid); 1336 active = (spmsg->spd_msg_spdid == 1337 SPD_ACTIVE); 1338 audit_pf_policy(SPD_FLIP, cr, ns, 1339 ITP_NAME(itp), active, 1340 ESRCH, cpid); 1341 } 1342 return; 1343 } 1344 spdsock_flip_node(itp, NULL, NULL); 1345 if (audit_active) { 1346 boolean_t active; 1347 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 1348 cred_t *cr; 1349 pid_t cpid; 1350 1351 cr = msg_getcred(mp, &cpid); 1352 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 1353 audit_pf_policy(SPD_FLIP, cr, ns, 1354 ITP_NAME(itp), active, 0, cpid); 1355 } 1356 ITP_REFRELE(itp, ns); 1357 } 1358 } else { 1359 ipsec_swap_global_policy(ns); /* can't fail */ 1360 if (audit_active) { 1361 boolean_t active; 1362 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 1363 cred_t *cr; 1364 pid_t cpid; 1365 1366 cr = msg_getcred(mp, &cpid); 1367 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 1368 audit_pf_policy(SPD_FLIP, cr, 1369 ns, NULL, active, 0, cpid); 1370 } 1371 } 1372 spd_echo(q, mp); 1373 } 1374 1375 /* 1376 * Unimplemented feature 1377 */ 1378 /* ARGSUSED */ 1379 static void 1380 spdsock_lookup(queue_t *q, ipsec_policy_head_t *iph, mblk_t *mp, 1381 spd_ext_t **extv, ipsec_tun_pol_t *itp) 1382 { 1383 spdsock_error(q, mp, EINVAL, 0); 1384 } 1385 1386 1387 static mblk_t * 1388 spdsock_dump_ruleset(mblk_t *req, ipsec_policy_head_t *iph, 1389 uint32_t count, uint16_t error) 1390 { 1391 size_t len = sizeof (spd_ruleset_ext_t) + sizeof (spd_msg_t); 1392 spd_msg_t *msg; 1393 spd_ruleset_ext_t *ruleset; 1394 mblk_t *m = allocb(len, BPRI_HI); 1395 1396 ASSERT(RW_READ_HELD(&iph->iph_lock)); 1397 1398 if (m == NULL) { 1399 return (NULL); 1400 } 1401 msg = (spd_msg_t *)m->b_rptr; 1402 ruleset = (spd_ruleset_ext_t *)(&msg[1]); 1403 1404 m->b_wptr = (uint8_t *)&ruleset[1]; 1405 1406 *msg = *(spd_msg_t *)(req->b_rptr); 1407 msg->spd_msg_len = SPD_8TO64(len); 1408 msg->spd_msg_errno = error; 1409 1410 ruleset->spd_ruleset_len = SPD_8TO64(sizeof (*ruleset)); 1411 ruleset->spd_ruleset_type = SPD_EXT_RULESET; 1412 ruleset->spd_ruleset_count = count; 1413 ruleset->spd_ruleset_version = iph->iph_gen; 1414 return (m); 1415 } 1416 1417 static mblk_t * 1418 spdsock_dump_finish(spdsock_t *ss, int error) 1419 { 1420 mblk_t *m; 1421 ipsec_policy_head_t *iph = ss->spdsock_dump_head; 1422 mblk_t *req = ss->spdsock_dump_req; 1423 netstack_t *ns = ss->spdsock_spds->spds_netstack; 1424 1425 rw_enter(&iph->iph_lock, RW_READER); 1426 m = spdsock_dump_ruleset(req, iph, ss->spdsock_dump_count, error); 1427 rw_exit(&iph->iph_lock); 1428 IPPH_REFRELE(iph, ns); 1429 if (ss->spdsock_itp != NULL) { 1430 ITP_REFRELE(ss->spdsock_itp, ns); 1431 ss->spdsock_itp = NULL; 1432 } 1433 ss->spdsock_dump_req = NULL; 1434 freemsg(req); 1435 1436 return (m); 1437 } 1438 1439 /* 1440 * Rule encoding functions. 1441 * We do a two-pass encode. 1442 * If base != NULL, fill in encoded rule part starting at base+offset. 1443 * Always return "offset" plus length of to-be-encoded data. 1444 */ 1445 static uint_t 1446 spdsock_encode_typecode(uint8_t *base, uint_t offset, uint8_t type, 1447 uint8_t type_end, uint8_t code, uint8_t code_end) 1448 { 1449 struct spd_typecode *tcp; 1450 1451 ASSERT(ALIGNED64(offset)); 1452 1453 if (base != NULL) { 1454 tcp = (struct spd_typecode *)(base + offset); 1455 tcp->spd_typecode_len = SPD_8TO64(sizeof (*tcp)); 1456 tcp->spd_typecode_exttype = SPD_EXT_ICMP_TYPECODE; 1457 tcp->spd_typecode_code = code; 1458 tcp->spd_typecode_type = type; 1459 tcp->spd_typecode_type_end = type_end; 1460 tcp->spd_typecode_code_end = code_end; 1461 } 1462 offset += sizeof (*tcp); 1463 1464 ASSERT(ALIGNED64(offset)); 1465 1466 return (offset); 1467 } 1468 1469 static uint_t 1470 spdsock_encode_proto(uint8_t *base, uint_t offset, uint8_t proto) 1471 { 1472 struct spd_proto *spp; 1473 1474 ASSERT(ALIGNED64(offset)); 1475 1476 if (base != NULL) { 1477 spp = (struct spd_proto *)(base + offset); 1478 spp->spd_proto_len = SPD_8TO64(sizeof (*spp)); 1479 spp->spd_proto_exttype = SPD_EXT_PROTO; 1480 spp->spd_proto_number = proto; 1481 spp->spd_proto_reserved1 = 0; 1482 spp->spd_proto_reserved2 = 0; 1483 } 1484 offset += sizeof (*spp); 1485 1486 ASSERT(ALIGNED64(offset)); 1487 1488 return (offset); 1489 } 1490 1491 static uint_t 1492 spdsock_encode_port(uint8_t *base, uint_t offset, uint16_t ext, uint16_t port) 1493 { 1494 struct spd_portrange *spp; 1495 1496 ASSERT(ALIGNED64(offset)); 1497 1498 if (base != NULL) { 1499 spp = (struct spd_portrange *)(base + offset); 1500 spp->spd_ports_len = SPD_8TO64(sizeof (*spp)); 1501 spp->spd_ports_exttype = ext; 1502 spp->spd_ports_minport = port; 1503 spp->spd_ports_maxport = port; 1504 } 1505 offset += sizeof (*spp); 1506 1507 ASSERT(ALIGNED64(offset)); 1508 1509 return (offset); 1510 } 1511 1512 static uint_t 1513 spdsock_encode_addr(uint8_t *base, uint_t offset, uint16_t ext, 1514 const ipsec_selkey_t *sel, const ipsec_addr_t *addr, uint_t pfxlen) 1515 { 1516 struct spd_address *sae; 1517 ipsec_addr_t *spdaddr; 1518 uint_t start = offset; 1519 uint_t addrlen; 1520 uint_t af; 1521 1522 if (sel->ipsl_valid & IPSL_IPV4) { 1523 af = AF_INET; 1524 addrlen = IP_ADDR_LEN; 1525 } else { 1526 af = AF_INET6; 1527 addrlen = IPV6_ADDR_LEN; 1528 } 1529 1530 ASSERT(ALIGNED64(offset)); 1531 1532 if (base != NULL) { 1533 sae = (struct spd_address *)(base + offset); 1534 sae->spd_address_exttype = ext; 1535 sae->spd_address_af = af; 1536 sae->spd_address_prefixlen = pfxlen; 1537 sae->spd_address_reserved2 = 0; 1538 1539 spdaddr = (ipsec_addr_t *)(&sae[1]); 1540 bcopy(addr, spdaddr, addrlen); 1541 } 1542 offset += sizeof (*sae); 1543 addrlen = roundup(addrlen, sizeof (uint64_t)); 1544 offset += addrlen; 1545 1546 ASSERT(ALIGNED64(offset)); 1547 1548 if (base != NULL) 1549 sae->spd_address_len = SPD_8TO64(offset - start); 1550 return (offset); 1551 } 1552 1553 static uint_t 1554 spdsock_encode_sel(uint8_t *base, uint_t offset, const ipsec_sel_t *sel) 1555 { 1556 const ipsec_selkey_t *selkey = &sel->ipsl_key; 1557 1558 if (selkey->ipsl_valid & IPSL_PROTOCOL) 1559 offset = spdsock_encode_proto(base, offset, selkey->ipsl_proto); 1560 if (selkey->ipsl_valid & IPSL_LOCAL_PORT) 1561 offset = spdsock_encode_port(base, offset, SPD_EXT_LCLPORT, 1562 selkey->ipsl_lport); 1563 if (selkey->ipsl_valid & IPSL_REMOTE_PORT) 1564 offset = spdsock_encode_port(base, offset, SPD_EXT_REMPORT, 1565 selkey->ipsl_rport); 1566 if (selkey->ipsl_valid & IPSL_REMOTE_ADDR) 1567 offset = spdsock_encode_addr(base, offset, SPD_EXT_REMADDR, 1568 selkey, &selkey->ipsl_remote, selkey->ipsl_remote_pfxlen); 1569 if (selkey->ipsl_valid & IPSL_LOCAL_ADDR) 1570 offset = spdsock_encode_addr(base, offset, SPD_EXT_LCLADDR, 1571 selkey, &selkey->ipsl_local, selkey->ipsl_local_pfxlen); 1572 if (selkey->ipsl_valid & IPSL_ICMP_TYPE) { 1573 offset = spdsock_encode_typecode(base, offset, 1574 selkey->ipsl_icmp_type, selkey->ipsl_icmp_type_end, 1575 (selkey->ipsl_valid & IPSL_ICMP_CODE) ? 1576 selkey->ipsl_icmp_code : 255, 1577 (selkey->ipsl_valid & IPSL_ICMP_CODE) ? 1578 selkey->ipsl_icmp_code_end : 255); 1579 } 1580 return (offset); 1581 } 1582 1583 static uint_t 1584 spdsock_encode_actattr(uint8_t *base, uint_t offset, uint32_t tag, 1585 uint32_t value) 1586 { 1587 struct spd_attribute *attr; 1588 1589 ASSERT(ALIGNED64(offset)); 1590 1591 if (base != NULL) { 1592 attr = (struct spd_attribute *)(base + offset); 1593 attr->spd_attr_tag = tag; 1594 attr->spd_attr_value = value; 1595 } 1596 offset += sizeof (struct spd_attribute); 1597 1598 ASSERT(ALIGNED64(offset)); 1599 1600 return (offset); 1601 } 1602 1603 1604 #define EMIT(t, v) offset = spdsock_encode_actattr(base, offset, (t), (v)) 1605 1606 static uint_t 1607 spdsock_encode_action(uint8_t *base, uint_t offset, const ipsec_action_t *ap) 1608 { 1609 const struct ipsec_act *act = &(ap->ipa_act); 1610 uint_t flags; 1611 1612 EMIT(SPD_ATTR_EMPTY, 0); 1613 switch (act->ipa_type) { 1614 case IPSEC_ACT_DISCARD: 1615 case IPSEC_ACT_REJECT: 1616 EMIT(SPD_ATTR_TYPE, SPD_ACTTYPE_DROP); 1617 break; 1618 case IPSEC_ACT_BYPASS: 1619 case IPSEC_ACT_CLEAR: 1620 EMIT(SPD_ATTR_TYPE, SPD_ACTTYPE_PASS); 1621 break; 1622 1623 case IPSEC_ACT_APPLY: 1624 EMIT(SPD_ATTR_TYPE, SPD_ACTTYPE_IPSEC); 1625 flags = 0; 1626 if (act->ipa_apply.ipp_use_ah) 1627 flags |= SPD_APPLY_AH; 1628 if (act->ipa_apply.ipp_use_esp) 1629 flags |= SPD_APPLY_ESP; 1630 if (act->ipa_apply.ipp_use_espa) 1631 flags |= SPD_APPLY_ESPA; 1632 if (act->ipa_apply.ipp_use_se) 1633 flags |= SPD_APPLY_SE; 1634 if (act->ipa_apply.ipp_use_unique) 1635 flags |= SPD_APPLY_UNIQUE; 1636 EMIT(SPD_ATTR_FLAGS, flags); 1637 if (flags & SPD_APPLY_AH) { 1638 EMIT(SPD_ATTR_AH_AUTH, act->ipa_apply.ipp_auth_alg); 1639 EMIT(SPD_ATTR_AH_MINBITS, 1640 act->ipa_apply.ipp_ah_minbits); 1641 EMIT(SPD_ATTR_AH_MAXBITS, 1642 act->ipa_apply.ipp_ah_maxbits); 1643 } 1644 if (flags & SPD_APPLY_ESP) { 1645 EMIT(SPD_ATTR_ESP_ENCR, act->ipa_apply.ipp_encr_alg); 1646 EMIT(SPD_ATTR_ENCR_MINBITS, 1647 act->ipa_apply.ipp_espe_minbits); 1648 EMIT(SPD_ATTR_ENCR_MAXBITS, 1649 act->ipa_apply.ipp_espe_maxbits); 1650 if (flags & SPD_APPLY_ESPA) { 1651 EMIT(SPD_ATTR_ESP_AUTH, 1652 act->ipa_apply.ipp_esp_auth_alg); 1653 EMIT(SPD_ATTR_ESPA_MINBITS, 1654 act->ipa_apply.ipp_espa_minbits); 1655 EMIT(SPD_ATTR_ESPA_MAXBITS, 1656 act->ipa_apply.ipp_espa_maxbits); 1657 } 1658 } 1659 if (act->ipa_apply.ipp_km_proto != 0) 1660 EMIT(SPD_ATTR_KM_PROTO, act->ipa_apply.ipp_km_proto); 1661 if (act->ipa_apply.ipp_km_cookie != 0) 1662 EMIT(SPD_ATTR_KM_PROTO, act->ipa_apply.ipp_km_cookie); 1663 if (act->ipa_apply.ipp_replay_depth != 0) 1664 EMIT(SPD_ATTR_REPLAY_DEPTH, 1665 act->ipa_apply.ipp_replay_depth); 1666 /* Add more here */ 1667 break; 1668 } 1669 1670 return (offset); 1671 } 1672 1673 static uint_t 1674 spdsock_encode_action_list(uint8_t *base, uint_t offset, 1675 const ipsec_action_t *ap) 1676 { 1677 struct spd_ext_actions *act; 1678 uint_t nact = 0; 1679 uint_t start = offset; 1680 1681 ASSERT(ALIGNED64(offset)); 1682 1683 if (base != NULL) { 1684 act = (struct spd_ext_actions *)(base + offset); 1685 act->spd_actions_len = 0; 1686 act->spd_actions_exttype = SPD_EXT_ACTION; 1687 act->spd_actions_count = 0; 1688 act->spd_actions_reserved = 0; 1689 } 1690 1691 offset += sizeof (*act); 1692 1693 ASSERT(ALIGNED64(offset)); 1694 1695 while (ap != NULL) { 1696 offset = spdsock_encode_action(base, offset, ap); 1697 ap = ap->ipa_next; 1698 nact++; 1699 if (ap != NULL) { 1700 EMIT(SPD_ATTR_NEXT, 0); 1701 } 1702 } 1703 EMIT(SPD_ATTR_END, 0); 1704 1705 ASSERT(ALIGNED64(offset)); 1706 1707 if (base != NULL) { 1708 act->spd_actions_count = nact; 1709 act->spd_actions_len = SPD_8TO64(offset - start); 1710 } 1711 1712 return (offset); 1713 } 1714 1715 #undef EMIT 1716 1717 /* ARGSUSED */ 1718 static uint_t 1719 spdsock_rule_flags(uint_t dir, uint_t af) 1720 { 1721 uint_t flags = 0; 1722 1723 if (dir == IPSEC_TYPE_INBOUND) 1724 flags |= SPD_RULE_FLAG_INBOUND; 1725 if (dir == IPSEC_TYPE_OUTBOUND) 1726 flags |= SPD_RULE_FLAG_OUTBOUND; 1727 1728 return (flags); 1729 } 1730 1731 1732 static uint_t 1733 spdsock_encode_rule_head(uint8_t *base, uint_t offset, spd_msg_t *req, 1734 const ipsec_policy_t *rule, uint_t dir, uint_t af, char *name, 1735 boolean_t tunnel) 1736 { 1737 struct spd_msg *spmsg; 1738 struct spd_rule *spr; 1739 spd_if_t *sid; 1740 1741 uint_t start = offset; 1742 1743 ASSERT(ALIGNED64(offset)); 1744 1745 if (base != NULL) { 1746 spmsg = (struct spd_msg *)(base + offset); 1747 bzero(spmsg, sizeof (*spmsg)); 1748 spmsg->spd_msg_version = PF_POLICY_V1; 1749 spmsg->spd_msg_type = SPD_DUMP; 1750 spmsg->spd_msg_seq = req->spd_msg_seq; 1751 spmsg->spd_msg_pid = req->spd_msg_pid; 1752 } 1753 offset += sizeof (struct spd_msg); 1754 1755 ASSERT(ALIGNED64(offset)); 1756 1757 if (base != NULL) { 1758 spr = (struct spd_rule *)(base + offset); 1759 spr->spd_rule_type = SPD_EXT_RULE; 1760 spr->spd_rule_priority = rule->ipsp_prio; 1761 spr->spd_rule_flags = spdsock_rule_flags(dir, af); 1762 if (tunnel) 1763 spr->spd_rule_flags |= SPD_RULE_FLAG_TUNNEL; 1764 spr->spd_rule_unused = 0; 1765 spr->spd_rule_len = SPD_8TO64(sizeof (*spr)); 1766 spr->spd_rule_index = rule->ipsp_index; 1767 } 1768 offset += sizeof (struct spd_rule); 1769 1770 /* 1771 * If we have an interface name (i.e. if this policy head came from 1772 * a tunnel), add the SPD_EXT_TUN_NAME extension. 1773 */ 1774 if (name != NULL) { 1775 1776 ASSERT(ALIGNED64(offset)); 1777 1778 if (base != NULL) { 1779 sid = (spd_if_t *)(base + offset); 1780 sid->spd_if_exttype = SPD_EXT_TUN_NAME; 1781 sid->spd_if_len = SPD_8TO64(sizeof (spd_if_t) + 1782 roundup((strlen(name) - 4), 8)); 1783 (void) strlcpy((char *)sid->spd_if_name, name, 1784 LIFNAMSIZ); 1785 } 1786 1787 offset += sizeof (spd_if_t) + roundup((strlen(name) - 4), 8); 1788 } 1789 1790 offset = spdsock_encode_sel(base, offset, rule->ipsp_sel); 1791 offset = spdsock_encode_action_list(base, offset, rule->ipsp_act); 1792 1793 ASSERT(ALIGNED64(offset)); 1794 1795 if (base != NULL) { 1796 spmsg->spd_msg_len = SPD_8TO64(offset - start); 1797 } 1798 return (offset); 1799 } 1800 1801 /* ARGSUSED */ 1802 static mblk_t * 1803 spdsock_encode_rule(mblk_t *req, const ipsec_policy_t *rule, 1804 uint_t dir, uint_t af, char *name, boolean_t tunnel) 1805 { 1806 mblk_t *m; 1807 uint_t len; 1808 spd_msg_t *mreq = (spd_msg_t *)req->b_rptr; 1809 1810 /* 1811 * Figure out how much space we'll need. 1812 */ 1813 len = spdsock_encode_rule_head(NULL, 0, mreq, rule, dir, af, name, 1814 tunnel); 1815 1816 /* 1817 * Allocate mblk. 1818 */ 1819 m = allocb(len, BPRI_HI); 1820 if (m == NULL) 1821 return (NULL); 1822 1823 /* 1824 * Fill it in.. 1825 */ 1826 m->b_wptr = m->b_rptr + len; 1827 bzero(m->b_rptr, len); 1828 (void) spdsock_encode_rule_head(m->b_rptr, 0, mreq, rule, dir, af, 1829 name, tunnel); 1830 return (m); 1831 } 1832 1833 static ipsec_policy_t * 1834 spdsock_dump_next_in_chain(spdsock_t *ss, ipsec_policy_head_t *iph, 1835 ipsec_policy_t *cur) 1836 { 1837 ASSERT(RW_READ_HELD(&iph->iph_lock)); 1838 1839 ss->spdsock_dump_count++; 1840 ss->spdsock_dump_cur_rule = cur->ipsp_hash.hash_next; 1841 return (cur); 1842 } 1843 1844 static ipsec_policy_t * 1845 spdsock_dump_next_rule(spdsock_t *ss, ipsec_policy_head_t *iph) 1846 { 1847 ipsec_policy_t *cur; 1848 ipsec_policy_root_t *ipr; 1849 int chain, nchains, type, af; 1850 1851 ASSERT(RW_READ_HELD(&iph->iph_lock)); 1852 1853 cur = ss->spdsock_dump_cur_rule; 1854 1855 if (cur != NULL) 1856 return (spdsock_dump_next_in_chain(ss, iph, cur)); 1857 1858 type = ss->spdsock_dump_cur_type; 1859 1860 next: 1861 chain = ss->spdsock_dump_cur_chain; 1862 ipr = &iph->iph_root[type]; 1863 nchains = ipr->ipr_nchains; 1864 1865 while (chain < nchains) { 1866 cur = ipr->ipr_hash[chain].hash_head; 1867 chain++; 1868 if (cur != NULL) { 1869 ss->spdsock_dump_cur_chain = chain; 1870 return (spdsock_dump_next_in_chain(ss, iph, cur)); 1871 } 1872 } 1873 ss->spdsock_dump_cur_chain = nchains; 1874 1875 af = ss->spdsock_dump_cur_af; 1876 while (af < IPSEC_NAF) { 1877 cur = ipr->ipr_nonhash[af]; 1878 af++; 1879 if (cur != NULL) { 1880 ss->spdsock_dump_cur_af = af; 1881 return (spdsock_dump_next_in_chain(ss, iph, cur)); 1882 } 1883 } 1884 1885 type++; 1886 if (type >= IPSEC_NTYPES) 1887 return (NULL); 1888 1889 ss->spdsock_dump_cur_chain = 0; 1890 ss->spdsock_dump_cur_type = type; 1891 ss->spdsock_dump_cur_af = IPSEC_AF_V4; 1892 goto next; 1893 1894 } 1895 1896 /* 1897 * If we're done with one policy head, but have more to go, we iterate through 1898 * another IPsec tunnel policy head (itp). Return NULL if it is an error 1899 * worthy of returning EAGAIN via PF_POLICY. 1900 */ 1901 static ipsec_tun_pol_t * 1902 spdsock_dump_iterate_next_tunnel(spdsock_t *ss, ipsec_stack_t *ipss) 1903 { 1904 ipsec_tun_pol_t *itp; 1905 1906 ASSERT(RW_READ_HELD(&ipss->ipsec_tunnel_policy_lock)); 1907 if (ipss->ipsec_tunnel_policy_gen > ss->spdsock_dump_tun_gen) { 1908 /* Oops, state of the tunnel polheads changed. */ 1909 itp = NULL; 1910 } else if (ss->spdsock_itp == NULL) { 1911 /* Just finished global, find first node. */ 1912 itp = avl_first(&ipss->ipsec_tunnel_policies); 1913 } else { 1914 /* We just finished current polhead, find the next one. */ 1915 itp = AVL_NEXT(&ipss->ipsec_tunnel_policies, ss->spdsock_itp); 1916 } 1917 if (itp != NULL) { 1918 ITP_REFHOLD(itp); 1919 } 1920 if (ss->spdsock_itp != NULL) { 1921 ITP_REFRELE(ss->spdsock_itp, ipss->ipsec_netstack); 1922 } 1923 ss->spdsock_itp = itp; 1924 return (itp); 1925 } 1926 1927 static mblk_t * 1928 spdsock_dump_next_record(spdsock_t *ss) 1929 { 1930 ipsec_policy_head_t *iph; 1931 ipsec_policy_t *rule; 1932 mblk_t *m; 1933 ipsec_tun_pol_t *itp; 1934 netstack_t *ns = ss->spdsock_spds->spds_netstack; 1935 ipsec_stack_t *ipss = ns->netstack_ipsec; 1936 1937 iph = ss->spdsock_dump_head; 1938 1939 ASSERT(iph != NULL); 1940 1941 rw_enter(&iph->iph_lock, RW_READER); 1942 1943 if (iph->iph_gen != ss->spdsock_dump_gen) { 1944 rw_exit(&iph->iph_lock); 1945 return (spdsock_dump_finish(ss, EAGAIN)); 1946 } 1947 1948 while ((rule = spdsock_dump_next_rule(ss, iph)) == NULL) { 1949 rw_exit(&iph->iph_lock); 1950 if (--(ss->spdsock_dump_remaining_polheads) == 0) 1951 return (spdsock_dump_finish(ss, 0)); 1952 1953 1954 /* 1955 * If we reach here, we have more policy heads (tunnel 1956 * entries) to dump. Let's reset to a new policy head 1957 * and get some more rules. 1958 * 1959 * An empty policy head will have spdsock_dump_next_rule() 1960 * return NULL, and we loop (while dropping the number of 1961 * remaining polheads). If we loop to 0, we finish. We 1962 * keep looping until we hit 0 or until we have a rule to 1963 * encode. 1964 * 1965 * NOTE: No need for ITP_REF*() macros here as we're only 1966 * going after and refholding the policy head itself. 1967 */ 1968 rw_enter(&ipss->ipsec_tunnel_policy_lock, RW_READER); 1969 itp = spdsock_dump_iterate_next_tunnel(ss, ipss); 1970 if (itp == NULL) { 1971 rw_exit(&ipss->ipsec_tunnel_policy_lock); 1972 return (spdsock_dump_finish(ss, EAGAIN)); 1973 } 1974 1975 /* Reset other spdsock_dump thingies. */ 1976 IPPH_REFRELE(ss->spdsock_dump_head, ns); 1977 if (ss->spdsock_dump_active) { 1978 ss->spdsock_dump_tunnel = 1979 itp->itp_flags & ITPF_P_TUNNEL; 1980 iph = itp->itp_policy; 1981 } else { 1982 ss->spdsock_dump_tunnel = 1983 itp->itp_flags & ITPF_I_TUNNEL; 1984 iph = itp->itp_inactive; 1985 } 1986 IPPH_REFHOLD(iph); 1987 rw_exit(&ipss->ipsec_tunnel_policy_lock); 1988 1989 rw_enter(&iph->iph_lock, RW_READER); 1990 RESET_SPDSOCK_DUMP_POLHEAD(ss, iph); 1991 } 1992 1993 m = spdsock_encode_rule(ss->spdsock_dump_req, rule, 1994 ss->spdsock_dump_cur_type, ss->spdsock_dump_cur_af, 1995 (ss->spdsock_itp == NULL) ? NULL : ss->spdsock_itp->itp_name, 1996 ss->spdsock_dump_tunnel); 1997 rw_exit(&iph->iph_lock); 1998 1999 if (m == NULL) 2000 return (spdsock_dump_finish(ss, ENOMEM)); 2001 return (m); 2002 } 2003 2004 /* 2005 * Dump records until we run into flow-control back-pressure. 2006 */ 2007 static void 2008 spdsock_dump_some(queue_t *q, spdsock_t *ss) 2009 { 2010 mblk_t *m, *dataind; 2011 2012 while ((ss->spdsock_dump_req != NULL) && canputnext(q)) { 2013 m = spdsock_dump_next_record(ss); 2014 if (m == NULL) 2015 return; 2016 dataind = allocb(sizeof (struct T_data_req), BPRI_HI); 2017 if (dataind == NULL) { 2018 freemsg(m); 2019 return; 2020 } 2021 dataind->b_cont = m; 2022 dataind->b_wptr += sizeof (struct T_data_req); 2023 ((struct T_data_ind *)dataind->b_rptr)->PRIM_type = T_DATA_IND; 2024 ((struct T_data_ind *)dataind->b_rptr)->MORE_flag = 0; 2025 dataind->b_datap->db_type = M_PROTO; 2026 putnext(q, dataind); 2027 } 2028 } 2029 2030 /* 2031 * Start dumping. 2032 * Format a start-of-dump record, and set up the stream and kick the rsrv 2033 * procedure to continue the job.. 2034 */ 2035 /* ARGSUSED */ 2036 static void 2037 spdsock_dump(queue_t *q, ipsec_policy_head_t *iph, mblk_t *mp) 2038 { 2039 spdsock_t *ss = (spdsock_t *)q->q_ptr; 2040 netstack_t *ns = ss->spdsock_spds->spds_netstack; 2041 ipsec_stack_t *ipss = ns->netstack_ipsec; 2042 mblk_t *mr; 2043 2044 /* spdsock_open() already set spdsock_itp to NULL. */ 2045 if (iph == ALL_ACTIVE_POLHEADS || iph == ALL_INACTIVE_POLHEADS) { 2046 rw_enter(&ipss->ipsec_tunnel_policy_lock, RW_READER); 2047 ss->spdsock_dump_remaining_polheads = 1 + 2048 avl_numnodes(&ipss->ipsec_tunnel_policies); 2049 ss->spdsock_dump_tun_gen = ipss->ipsec_tunnel_policy_gen; 2050 rw_exit(&ipss->ipsec_tunnel_policy_lock); 2051 if (iph == ALL_ACTIVE_POLHEADS) { 2052 iph = ipsec_system_policy(ns); 2053 ss->spdsock_dump_active = B_TRUE; 2054 } else { 2055 iph = ipsec_inactive_policy(ns); 2056 ss->spdsock_dump_active = B_FALSE; 2057 } 2058 ASSERT(ss->spdsock_itp == NULL); 2059 } else { 2060 ss->spdsock_dump_remaining_polheads = 1; 2061 } 2062 2063 rw_enter(&iph->iph_lock, RW_READER); 2064 2065 mr = spdsock_dump_ruleset(mp, iph, 0, 0); 2066 2067 if (!mr) { 2068 rw_exit(&iph->iph_lock); 2069 spdsock_error(q, mp, ENOMEM, 0); 2070 return; 2071 } 2072 2073 ss->spdsock_dump_req = mp; 2074 RESET_SPDSOCK_DUMP_POLHEAD(ss, iph); 2075 2076 rw_exit(&iph->iph_lock); 2077 2078 qreply(q, mr); 2079 qenable(OTHERQ(q)); 2080 } 2081 2082 /* Do NOT consume a reference to ITP. */ 2083 void 2084 spdsock_clone_node(ipsec_tun_pol_t *itp, void *ep, netstack_t *ns) 2085 { 2086 int *errptr = (int *)ep; 2087 2088 if (*errptr != 0) 2089 return; /* We've failed already for some reason. */ 2090 mutex_enter(&itp->itp_lock); 2091 ITPF_CLONE(itp->itp_flags); 2092 *errptr = ipsec_copy_polhead(itp->itp_policy, itp->itp_inactive, ns); 2093 mutex_exit(&itp->itp_lock); 2094 } 2095 2096 void 2097 spdsock_clone(queue_t *q, mblk_t *mp, spd_if_t *tunname) 2098 { 2099 int error; 2100 char *tname; 2101 ipsec_tun_pol_t *itp; 2102 spdsock_t *ss = (spdsock_t *)q->q_ptr; 2103 netstack_t *ns = ss->spdsock_spds->spds_netstack; 2104 2105 if (tunname != NULL) { 2106 tname = (char *)tunname->spd_if_name; 2107 if (*tname == '\0') { 2108 error = ipsec_clone_system_policy(ns); 2109 if (audit_active) { 2110 boolean_t active; 2111 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 2112 cred_t *cr; 2113 pid_t cpid; 2114 2115 cr = msg_getcred(mp, &cpid); 2116 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 2117 audit_pf_policy(SPD_CLONE, cr, ns, 2118 NULL, active, error, cpid); 2119 } 2120 if (error == 0) { 2121 itp_walk(spdsock_clone_node, &error, ns); 2122 if (audit_active) { 2123 boolean_t active; 2124 spd_msg_t *spmsg = 2125 (spd_msg_t *)mp->b_rptr; 2126 cred_t *cr; 2127 pid_t cpid; 2128 2129 cr = msg_getcred(mp, &cpid); 2130 active = (spmsg->spd_msg_spdid == 2131 SPD_ACTIVE); 2132 audit_pf_policy(SPD_CLONE, cr, 2133 ns, "all tunnels", active, 0, 2134 cpid); 2135 } 2136 } 2137 } else { 2138 itp = get_tunnel_policy(tname, ns); 2139 if (itp == NULL) { 2140 spdsock_error(q, mp, ENOENT, 0); 2141 if (audit_active) { 2142 boolean_t active; 2143 spd_msg_t *spmsg = 2144 (spd_msg_t *)mp->b_rptr; 2145 cred_t *cr; 2146 pid_t cpid; 2147 2148 cr = msg_getcred(mp, &cpid); 2149 active = (spmsg->spd_msg_spdid == 2150 SPD_ACTIVE); 2151 audit_pf_policy(SPD_CLONE, cr, 2152 ns, ITP_NAME(itp), active, ENOENT, 2153 cpid); 2154 } 2155 return; 2156 } 2157 spdsock_clone_node(itp, &error, NULL); 2158 ITP_REFRELE(itp, ns); 2159 if (audit_active) { 2160 boolean_t active; 2161 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 2162 cred_t *cr; 2163 pid_t cpid; 2164 2165 cr = msg_getcred(mp, &cpid); 2166 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 2167 audit_pf_policy(SPD_CLONE, cr, ns, 2168 ITP_NAME(itp), active, error, cpid); 2169 } 2170 } 2171 } else { 2172 error = ipsec_clone_system_policy(ns); 2173 if (audit_active) { 2174 boolean_t active; 2175 spd_msg_t *spmsg = (spd_msg_t *)mp->b_rptr; 2176 cred_t *cr; 2177 pid_t cpid; 2178 2179 cr = msg_getcred(mp, &cpid); 2180 active = (spmsg->spd_msg_spdid == SPD_ACTIVE); 2181 audit_pf_policy(SPD_CLONE, cr, ns, NULL, 2182 active, error, cpid); 2183 } 2184 } 2185 2186 if (error != 0) 2187 spdsock_error(q, mp, error, 0); 2188 else 2189 spd_echo(q, mp); 2190 } 2191 2192 /* 2193 * Process a SPD_ALGLIST request. The caller expects separate alg entries 2194 * for AH authentication, ESP authentication, and ESP encryption. 2195 * The same distinction is then used when setting the min and max key 2196 * sizes when defining policies. 2197 */ 2198 2199 #define SPDSOCK_AH_AUTH 0 2200 #define SPDSOCK_ESP_AUTH 1 2201 #define SPDSOCK_ESP_ENCR 2 2202 #define SPDSOCK_NTYPES 3 2203 2204 static const uint_t algattr[SPDSOCK_NTYPES] = { 2205 SPD_ATTR_AH_AUTH, 2206 SPD_ATTR_ESP_AUTH, 2207 SPD_ATTR_ESP_ENCR 2208 }; 2209 static const uint_t minbitsattr[SPDSOCK_NTYPES] = { 2210 SPD_ATTR_AH_MINBITS, 2211 SPD_ATTR_ESPA_MINBITS, 2212 SPD_ATTR_ENCR_MINBITS 2213 }; 2214 static const uint_t maxbitsattr[SPDSOCK_NTYPES] = { 2215 SPD_ATTR_AH_MAXBITS, 2216 SPD_ATTR_ESPA_MAXBITS, 2217 SPD_ATTR_ENCR_MAXBITS 2218 }; 2219 static const uint_t defbitsattr[SPDSOCK_NTYPES] = { 2220 SPD_ATTR_AH_DEFBITS, 2221 SPD_ATTR_ESPA_DEFBITS, 2222 SPD_ATTR_ENCR_DEFBITS 2223 }; 2224 static const uint_t incrbitsattr[SPDSOCK_NTYPES] = { 2225 SPD_ATTR_AH_INCRBITS, 2226 SPD_ATTR_ESPA_INCRBITS, 2227 SPD_ATTR_ENCR_INCRBITS 2228 }; 2229 2230 #define ATTRPERALG 6 /* fixed attributes per algs */ 2231 2232 void 2233 spdsock_alglist(queue_t *q, mblk_t *mp) 2234 { 2235 uint_t algtype; 2236 uint_t algidx; 2237 uint_t algcount; 2238 uint_t size; 2239 mblk_t *m; 2240 uint8_t *cur; 2241 spd_msg_t *msg; 2242 struct spd_ext_actions *act; 2243 struct spd_attribute *attr; 2244 spdsock_t *ss = (spdsock_t *)q->q_ptr; 2245 ipsec_stack_t *ipss = ss->spdsock_spds->spds_netstack->netstack_ipsec; 2246 2247 mutex_enter(&ipss->ipsec_alg_lock); 2248 /* 2249 * The SPD client expects to receive separate entries for 2250 * AH authentication and ESP authentication supported algorithms. 2251 * 2252 * Don't return the "any" algorithms, if defined, as no 2253 * kernel policies can be set for these algorithms. 2254 */ 2255 algcount = 2 * ipss->ipsec_nalgs[IPSEC_ALG_AUTH] + 2256 ipss->ipsec_nalgs[IPSEC_ALG_ENCR]; 2257 2258 if (ipss->ipsec_alglists[IPSEC_ALG_AUTH][SADB_AALG_NONE] != NULL) 2259 algcount--; 2260 if (ipss->ipsec_alglists[IPSEC_ALG_ENCR][SADB_EALG_NONE] != NULL) 2261 algcount--; 2262 2263 /* 2264 * For each algorithm, we encode: 2265 * ALG / MINBITS / MAXBITS / DEFBITS / INCRBITS / {END, NEXT} 2266 */ 2267 2268 size = sizeof (spd_msg_t) + sizeof (struct spd_ext_actions) + 2269 ATTRPERALG * sizeof (struct spd_attribute) * algcount; 2270 2271 ASSERT(ALIGNED64(size)); 2272 2273 m = allocb(size, BPRI_HI); 2274 if (m == NULL) { 2275 mutex_exit(&ipss->ipsec_alg_lock); 2276 spdsock_error(q, mp, ENOMEM, 0); 2277 return; 2278 } 2279 2280 m->b_wptr = m->b_rptr + size; 2281 cur = m->b_rptr; 2282 2283 msg = (spd_msg_t *)cur; 2284 bcopy(mp->b_rptr, cur, sizeof (*msg)); 2285 2286 msg->spd_msg_len = SPD_8TO64(size); 2287 msg->spd_msg_errno = 0; 2288 msg->spd_msg_diagnostic = 0; 2289 2290 cur += sizeof (*msg); 2291 2292 act = (struct spd_ext_actions *)cur; 2293 cur += sizeof (*act); 2294 2295 act->spd_actions_len = SPD_8TO64(size - sizeof (spd_msg_t)); 2296 act->spd_actions_exttype = SPD_EXT_ACTION; 2297 act->spd_actions_count = algcount; 2298 act->spd_actions_reserved = 0; 2299 2300 attr = (struct spd_attribute *)cur; 2301 2302 #define EMIT(tag, value) { \ 2303 attr->spd_attr_tag = (tag); \ 2304 attr->spd_attr_value = (value); \ 2305 attr++; \ 2306 } 2307 2308 /* 2309 * If you change the number of EMIT's here, change 2310 * ATTRPERALG above to match 2311 */ 2312 #define EMITALGATTRS(_type) { \ 2313 EMIT(algattr[_type], algid); /* 1 */ \ 2314 EMIT(minbitsattr[_type], minbits); /* 2 */ \ 2315 EMIT(maxbitsattr[_type], maxbits); /* 3 */ \ 2316 EMIT(defbitsattr[_type], defbits); /* 4 */ \ 2317 EMIT(incrbitsattr[_type], incr); /* 5 */ \ 2318 EMIT(SPD_ATTR_NEXT, 0); /* 6 */ \ 2319 } 2320 2321 for (algtype = 0; algtype < IPSEC_NALGTYPES; algtype++) { 2322 for (algidx = 0; algidx < ipss->ipsec_nalgs[algtype]; 2323 algidx++) { 2324 int algid = ipss->ipsec_sortlist[algtype][algidx]; 2325 ipsec_alginfo_t *alg = 2326 ipss->ipsec_alglists[algtype][algid]; 2327 uint_t minbits = alg->alg_minbits; 2328 uint_t maxbits = alg->alg_maxbits; 2329 uint_t defbits = alg->alg_default_bits; 2330 uint_t incr = alg->alg_increment; 2331 2332 if (algtype == IPSEC_ALG_AUTH) { 2333 if (algid == SADB_AALG_NONE) 2334 continue; 2335 EMITALGATTRS(SPDSOCK_AH_AUTH); 2336 EMITALGATTRS(SPDSOCK_ESP_AUTH); 2337 } else { 2338 if (algid == SADB_EALG_NONE) 2339 continue; 2340 ASSERT(algtype == IPSEC_ALG_ENCR); 2341 EMITALGATTRS(SPDSOCK_ESP_ENCR); 2342 } 2343 } 2344 } 2345 2346 mutex_exit(&ipss->ipsec_alg_lock); 2347 2348 #undef EMITALGATTRS 2349 #undef EMIT 2350 #undef ATTRPERALG 2351 2352 attr--; 2353 attr->spd_attr_tag = SPD_ATTR_END; 2354 2355 freemsg(mp); 2356 qreply(q, m); 2357 } 2358 2359 /* 2360 * Process a SPD_DUMPALGS request. 2361 */ 2362 2363 #define ATTRPERALG 7 /* fixed attributes per algs */ 2364 2365 void 2366 spdsock_dumpalgs(queue_t *q, mblk_t *mp) 2367 { 2368 uint_t algtype; 2369 uint_t algidx; 2370 uint_t size; 2371 mblk_t *m; 2372 uint8_t *cur; 2373 spd_msg_t *msg; 2374 struct spd_ext_actions *act; 2375 struct spd_attribute *attr; 2376 ipsec_alginfo_t *alg; 2377 uint_t algid; 2378 uint_t i; 2379 uint_t alg_size; 2380 spdsock_t *ss = (spdsock_t *)q->q_ptr; 2381 ipsec_stack_t *ipss = ss->spdsock_spds->spds_netstack->netstack_ipsec; 2382 2383 mutex_enter(&ipss->ipsec_alg_lock); 2384 2385 /* 2386 * For each algorithm, we encode: 2387 * ALG / MINBITS / MAXBITS / DEFBITS / INCRBITS / {END, NEXT} 2388 * 2389 * ALG_ID / ALG_PROTO / ALG_INCRBITS / ALG_NKEYSIZES / ALG_KEYSIZE* 2390 * ALG_NBLOCKSIZES / ALG_BLOCKSIZE* / ALG_MECHNAME / {END, NEXT} 2391 */ 2392 2393 /* 2394 * Compute the size of the SPD message. 2395 */ 2396 size = sizeof (spd_msg_t) + sizeof (struct spd_ext_actions); 2397 2398 for (algtype = 0; algtype < IPSEC_NALGTYPES; algtype++) { 2399 for (algidx = 0; algidx < ipss->ipsec_nalgs[algtype]; 2400 algidx++) { 2401 algid = ipss->ipsec_sortlist[algtype][algidx]; 2402 alg = ipss->ipsec_alglists[algtype][algid]; 2403 alg_size = sizeof (struct spd_attribute) * 2404 (ATTRPERALG + alg->alg_nkey_sizes + 2405 alg->alg_nblock_sizes) + CRYPTO_MAX_MECH_NAME; 2406 size += alg_size; 2407 } 2408 } 2409 2410 ASSERT(ALIGNED64(size)); 2411 2412 m = allocb(size, BPRI_HI); 2413 if (m == NULL) { 2414 mutex_exit(&ipss->ipsec_alg_lock); 2415 spdsock_error(q, mp, ENOMEM, 0); 2416 return; 2417 } 2418 2419 m->b_wptr = m->b_rptr + size; 2420 cur = m->b_rptr; 2421 2422 msg = (spd_msg_t *)cur; 2423 bcopy(mp->b_rptr, cur, sizeof (*msg)); 2424 2425 msg->spd_msg_len = SPD_8TO64(size); 2426 msg->spd_msg_errno = 0; 2427 msg->spd_msg_type = SPD_ALGLIST; 2428 2429 msg->spd_msg_diagnostic = 0; 2430 2431 cur += sizeof (*msg); 2432 2433 act = (struct spd_ext_actions *)cur; 2434 cur += sizeof (*act); 2435 2436 act->spd_actions_len = SPD_8TO64(size - sizeof (spd_msg_t)); 2437 act->spd_actions_exttype = SPD_EXT_ACTION; 2438 act->spd_actions_count = ipss->ipsec_nalgs[IPSEC_ALG_AUTH] + 2439 ipss->ipsec_nalgs[IPSEC_ALG_ENCR]; 2440 act->spd_actions_reserved = 0; 2441 2442 /* 2443 * If there aren't any algorithms registered, return an empty message. 2444 * spdsock_get_ext() knows how to deal with this. 2445 */ 2446 if (act->spd_actions_count == 0) { 2447 act->spd_actions_len = 0; 2448 mutex_exit(&ipss->ipsec_alg_lock); 2449 goto error; 2450 } 2451 2452 attr = (struct spd_attribute *)cur; 2453 2454 #define EMIT(tag, value) { \ 2455 attr->spd_attr_tag = (tag); \ 2456 attr->spd_attr_value = (value); \ 2457 attr++; \ 2458 } 2459 2460 for (algtype = 0; algtype < IPSEC_NALGTYPES; algtype++) { 2461 for (algidx = 0; algidx < ipss->ipsec_nalgs[algtype]; 2462 algidx++) { 2463 2464 algid = ipss->ipsec_sortlist[algtype][algidx]; 2465 alg = ipss->ipsec_alglists[algtype][algid]; 2466 2467 /* 2468 * If you change the number of EMIT's here, change 2469 * ATTRPERALG above to match 2470 */ 2471 EMIT(SPD_ATTR_ALG_ID, algid); 2472 EMIT(SPD_ATTR_ALG_PROTO, algproto[algtype]); 2473 EMIT(SPD_ATTR_ALG_INCRBITS, alg->alg_increment); 2474 2475 EMIT(SPD_ATTR_ALG_NKEYSIZES, alg->alg_nkey_sizes); 2476 for (i = 0; i < alg->alg_nkey_sizes; i++) 2477 EMIT(SPD_ATTR_ALG_KEYSIZE, 2478 alg->alg_key_sizes[i]); 2479 2480 EMIT(SPD_ATTR_ALG_NBLOCKSIZES, alg->alg_nblock_sizes); 2481 for (i = 0; i < alg->alg_nblock_sizes; i++) 2482 EMIT(SPD_ATTR_ALG_BLOCKSIZE, 2483 alg->alg_block_sizes[i]); 2484 2485 EMIT(SPD_ATTR_ALG_MECHNAME, CRYPTO_MAX_MECH_NAME); 2486 bcopy(alg->alg_mech_name, attr, CRYPTO_MAX_MECH_NAME); 2487 attr = (struct spd_attribute *)((char *)attr + 2488 CRYPTO_MAX_MECH_NAME); 2489 2490 EMIT(SPD_ATTR_NEXT, 0); 2491 } 2492 } 2493 2494 mutex_exit(&ipss->ipsec_alg_lock); 2495 2496 #undef EMITALGATTRS 2497 #undef EMIT 2498 #undef ATTRPERALG 2499 2500 attr--; 2501 attr->spd_attr_tag = SPD_ATTR_END; 2502 2503 error: 2504 freemsg(mp); 2505 qreply(q, m); 2506 } 2507 2508 /* 2509 * Do the actual work of processing an SPD_UPDATEALGS request. Can 2510 * be invoked either once IPsec is loaded on a cached request, or 2511 * when a request is received while IPsec is loaded. 2512 */ 2513 static void 2514 spdsock_do_updatealg(spd_ext_t *extv[], int *diag, spd_stack_t *spds) 2515 { 2516 struct spd_ext_actions *actp; 2517 struct spd_attribute *attr, *endattr; 2518 uint64_t *start, *end; 2519 ipsec_alginfo_t *alg = NULL; 2520 ipsec_algtype_t alg_type = 0; 2521 boolean_t skip_alg = B_TRUE, doing_proto = B_FALSE; 2522 uint_t i, cur_key, cur_block, algid; 2523 2524 *diag = -1; 2525 ASSERT(MUTEX_HELD(&spds->spds_alg_lock)); 2526 2527 /* parse the message, building the list of algorithms */ 2528 2529 actp = (struct spd_ext_actions *)extv[SPD_EXT_ACTION]; 2530 if (actp == NULL) { 2531 *diag = SPD_DIAGNOSTIC_NO_ACTION_EXT; 2532 return; 2533 } 2534 2535 start = (uint64_t *)actp; 2536 end = (start + actp->spd_actions_len); 2537 endattr = (struct spd_attribute *)end; 2538 attr = (struct spd_attribute *)&actp[1]; 2539 2540 bzero(spds->spds_algs, IPSEC_NALGTYPES * IPSEC_MAX_ALGS * 2541 sizeof (ipsec_alginfo_t *)); 2542 2543 alg = kmem_zalloc(sizeof (*alg), KM_SLEEP); 2544 2545 #define ALG_KEY_SIZES(a) (((a)->alg_nkey_sizes + 1) * sizeof (uint16_t)) 2546 #define ALG_BLOCK_SIZES(a) (((a)->alg_nblock_sizes + 1) * sizeof (uint16_t)) 2547 2548 while (attr < endattr) { 2549 switch (attr->spd_attr_tag) { 2550 case SPD_ATTR_NOP: 2551 case SPD_ATTR_EMPTY: 2552 break; 2553 case SPD_ATTR_END: 2554 attr = endattr; 2555 /* FALLTHRU */ 2556 case SPD_ATTR_NEXT: 2557 if (doing_proto) { 2558 doing_proto = B_FALSE; 2559 break; 2560 } 2561 if (skip_alg) { 2562 ipsec_alg_free(alg); 2563 } else { 2564 ipsec_alg_free( 2565 spds->spds_algs[alg_type][alg->alg_id]); 2566 spds->spds_algs[alg_type][alg->alg_id] = 2567 alg; 2568 } 2569 alg = kmem_zalloc(sizeof (*alg), KM_SLEEP); 2570 break; 2571 2572 case SPD_ATTR_ALG_ID: 2573 if (attr->spd_attr_value >= IPSEC_MAX_ALGS) { 2574 ss1dbg(spds, ("spdsock_do_updatealg: " 2575 "invalid alg id %d\n", 2576 attr->spd_attr_value)); 2577 *diag = SPD_DIAGNOSTIC_ALG_ID_RANGE; 2578 goto bail; 2579 } 2580 alg->alg_id = attr->spd_attr_value; 2581 break; 2582 2583 case SPD_ATTR_ALG_PROTO: 2584 /* find the alg type */ 2585 for (i = 0; i < NALGPROTOS; i++) 2586 if (algproto[i] == attr->spd_attr_value) 2587 break; 2588 skip_alg = (i == NALGPROTOS); 2589 if (!skip_alg) 2590 alg_type = i; 2591 break; 2592 2593 case SPD_ATTR_ALG_INCRBITS: 2594 alg->alg_increment = attr->spd_attr_value; 2595 break; 2596 2597 case SPD_ATTR_ALG_NKEYSIZES: 2598 if (alg->alg_key_sizes != NULL) { 2599 kmem_free(alg->alg_key_sizes, 2600 ALG_KEY_SIZES(alg)); 2601 } 2602 alg->alg_nkey_sizes = attr->spd_attr_value; 2603 /* 2604 * Allocate room for the trailing zero key size 2605 * value as well. 2606 */ 2607 alg->alg_key_sizes = kmem_zalloc(ALG_KEY_SIZES(alg), 2608 KM_SLEEP); 2609 cur_key = 0; 2610 break; 2611 2612 case SPD_ATTR_ALG_KEYSIZE: 2613 if (alg->alg_key_sizes == NULL || 2614 cur_key >= alg->alg_nkey_sizes) { 2615 ss1dbg(spds, ("spdsock_do_updatealg: " 2616 "too many key sizes\n")); 2617 *diag = SPD_DIAGNOSTIC_ALG_NUM_KEY_SIZES; 2618 goto bail; 2619 } 2620 alg->alg_key_sizes[cur_key++] = attr->spd_attr_value; 2621 break; 2622 2623 case SPD_ATTR_ALG_NBLOCKSIZES: 2624 if (alg->alg_block_sizes != NULL) { 2625 kmem_free(alg->alg_block_sizes, 2626 ALG_BLOCK_SIZES(alg)); 2627 } 2628 alg->alg_nblock_sizes = attr->spd_attr_value; 2629 /* 2630 * Allocate room for the trailing zero block size 2631 * value as well. 2632 */ 2633 alg->alg_block_sizes = kmem_zalloc(ALG_BLOCK_SIZES(alg), 2634 KM_SLEEP); 2635 cur_block = 0; 2636 break; 2637 2638 case SPD_ATTR_ALG_BLOCKSIZE: 2639 if (alg->alg_block_sizes == NULL || 2640 cur_block >= alg->alg_nblock_sizes) { 2641 ss1dbg(spds, ("spdsock_do_updatealg: " 2642 "too many block sizes\n")); 2643 *diag = SPD_DIAGNOSTIC_ALG_NUM_BLOCK_SIZES; 2644 goto bail; 2645 } 2646 alg->alg_block_sizes[cur_block++] = 2647 attr->spd_attr_value; 2648 break; 2649 2650 case SPD_ATTR_ALG_MECHNAME: { 2651 char *mech_name; 2652 2653 if (attr->spd_attr_value > CRYPTO_MAX_MECH_NAME) { 2654 ss1dbg(spds, ("spdsock_do_updatealg: " 2655 "mech name too long\n")); 2656 *diag = SPD_DIAGNOSTIC_ALG_MECH_NAME_LEN; 2657 goto bail; 2658 } 2659 mech_name = (char *)(attr + 1); 2660 bcopy(mech_name, alg->alg_mech_name, 2661 attr->spd_attr_value); 2662 alg->alg_mech_name[CRYPTO_MAX_MECH_NAME-1] = '\0'; 2663 attr = (struct spd_attribute *)((char *)attr + 2664 attr->spd_attr_value); 2665 break; 2666 } 2667 2668 case SPD_ATTR_PROTO_ID: 2669 doing_proto = B_TRUE; 2670 for (i = 0; i < NALGPROTOS; i++) { 2671 if (algproto[i] == attr->spd_attr_value) { 2672 alg_type = i; 2673 break; 2674 } 2675 } 2676 break; 2677 2678 case SPD_ATTR_PROTO_EXEC_MODE: 2679 if (!doing_proto) 2680 break; 2681 for (i = 0; i < NEXECMODES; i++) { 2682 if (execmodes[i] == attr->spd_attr_value) { 2683 spds->spds_algs_exec_mode[alg_type] = i; 2684 break; 2685 } 2686 } 2687 break; 2688 } 2689 attr++; 2690 } 2691 2692 #undef ALG_KEY_SIZES 2693 #undef ALG_BLOCK_SIZES 2694 2695 /* update the algorithm tables */ 2696 spdsock_merge_algs(spds); 2697 bail: 2698 /* cleanup */ 2699 ipsec_alg_free(alg); 2700 for (alg_type = 0; alg_type < IPSEC_NALGTYPES; alg_type++) 2701 for (algid = 0; algid < IPSEC_MAX_ALGS; algid++) 2702 if (spds->spds_algs[alg_type][algid] != NULL) 2703 ipsec_alg_free(spds->spds_algs[alg_type][algid]); 2704 } 2705 2706 /* 2707 * Process an SPD_UPDATEALGS request. If IPsec is not loaded, queue 2708 * the request until IPsec loads. If IPsec is loaded, act on it 2709 * immediately. 2710 */ 2711 2712 static void 2713 spdsock_updatealg(queue_t *q, mblk_t *mp, spd_ext_t *extv[]) 2714 { 2715 spdsock_t *ss = (spdsock_t *)q->q_ptr; 2716 spd_stack_t *spds = ss->spdsock_spds; 2717 ipsec_stack_t *ipss = spds->spds_netstack->netstack_ipsec; 2718 2719 if (!ipsec_loaded(ipss)) { 2720 /* 2721 * IPsec is not loaded, save request and return nicely, 2722 * the message will be processed once IPsec loads. 2723 */ 2724 mblk_t *new_mp; 2725 2726 /* last update message wins */ 2727 if ((new_mp = copymsg(mp)) == NULL) { 2728 spdsock_error(q, mp, ENOMEM, 0); 2729 return; 2730 } 2731 mutex_enter(&spds->spds_alg_lock); 2732 bcopy(extv, spds->spds_extv_algs, 2733 sizeof (spd_ext_t *) * (SPD_EXT_MAX + 1)); 2734 if (spds->spds_mp_algs != NULL) 2735 freemsg(spds->spds_mp_algs); 2736 spds->spds_mp_algs = mp; 2737 spds->spds_algs_pending = B_TRUE; 2738 mutex_exit(&spds->spds_alg_lock); 2739 if (audit_active) { 2740 cred_t *cr; 2741 pid_t cpid; 2742 2743 cr = msg_getcred(mp, &cpid); 2744 audit_pf_policy(SPD_UPDATEALGS, cr, 2745 spds->spds_netstack, NULL, B_TRUE, EAGAIN, 2746 cpid); 2747 } 2748 spd_echo(q, new_mp); 2749 } else { 2750 /* 2751 * IPsec is loaded, act on the message immediately. 2752 */ 2753 int diag; 2754 2755 mutex_enter(&spds->spds_alg_lock); 2756 spdsock_do_updatealg(extv, &diag, spds); 2757 mutex_exit(&spds->spds_alg_lock); 2758 if (diag == -1) { 2759 spd_echo(q, mp); 2760 if (audit_active) { 2761 cred_t *cr; 2762 pid_t cpid; 2763 2764 cr = msg_getcred(mp, &cpid); 2765 audit_pf_policy(SPD_UPDATEALGS, cr, 2766 spds->spds_netstack, NULL, B_TRUE, 0, 2767 cpid); 2768 } 2769 } else { 2770 spdsock_diag(q, mp, diag); 2771 if (audit_active) { 2772 cred_t *cr; 2773 pid_t cpid; 2774 2775 cr = msg_getcred(mp, &cpid); 2776 audit_pf_policy(SPD_UPDATEALGS, cr, 2777 spds->spds_netstack, NULL, B_TRUE, diag, 2778 cpid); 2779 } 2780 } 2781 } 2782 } 2783 2784 /* 2785 * With a reference-held ill, dig down and find an instance of "tun", and 2786 * assign its tunnel policy pointer, while reference-holding it. Also, 2787 * release ill's refrence when finished. 2788 * 2789 * We'll be messing with q_next, so be VERY careful. 2790 */ 2791 static void 2792 find_tun_and_set_itp(ill_t *ill, ipsec_tun_pol_t *itp) 2793 { 2794 queue_t *q; 2795 tun_t *tun; 2796 2797 /* Don't bother if this ill is going away. */ 2798 if (ill->ill_flags & ILL_CONDEMNED) { 2799 ill_refrele(ill); 2800 return; 2801 } 2802 2803 2804 q = ill->ill_wq; 2805 claimstr(q); /* Lighter-weight than freezestr(). */ 2806 2807 do { 2808 /* Use strcmp() because "tun" is bounded. */ 2809 if (strcmp(q->q_qinfo->qi_minfo->mi_idname, "tun") == 0) { 2810 /* Aha! Got it. */ 2811 tun = (tun_t *)q->q_ptr; 2812 if (tun != NULL) { 2813 mutex_enter(&tun->tun_lock); 2814 if (tun->tun_itp != itp) { 2815 ASSERT(tun->tun_itp == NULL); 2816 ITP_REFHOLD(itp); 2817 tun->tun_itp = itp; 2818 } 2819 mutex_exit(&tun->tun_lock); 2820 goto release_and_return; 2821 } 2822 /* 2823 * Else assume this is some other module named "tun" 2824 * and move on, hoping we find one that actually has 2825 * something in q_ptr. 2826 */ 2827 } 2828 q = q->q_next; 2829 } while (q != NULL); 2830 2831 release_and_return: 2832 releasestr(ill->ill_wq); 2833 ill_refrele(ill); 2834 } 2835 2836 /* 2837 * Sort through the mess of polhead options to retrieve an appropriate one. 2838 * Returns NULL if we send an spdsock error. Returns a valid pointer if we 2839 * found a valid polhead. Returns ALL_ACTIVE_POLHEADS (aka. -1) or 2840 * ALL_INACTIVE_POLHEADS (aka. -2) if the operation calls for the operation to 2841 * act on ALL policy heads. 2842 */ 2843 static ipsec_policy_head_t * 2844 get_appropriate_polhead(queue_t *q, mblk_t *mp, spd_if_t *tunname, int spdid, 2845 int msgtype, ipsec_tun_pol_t **itpp) 2846 { 2847 ipsec_tun_pol_t *itp; 2848 ipsec_policy_head_t *iph; 2849 int errno; 2850 char *tname; 2851 boolean_t active; 2852 spdsock_t *ss = (spdsock_t *)q->q_ptr; 2853 netstack_t *ns = ss->spdsock_spds->spds_netstack; 2854 uint64_t gen; /* Placeholder */ 2855 ill_t *v4, *v6; 2856 2857 active = (spdid == SPD_ACTIVE); 2858 *itpp = NULL; 2859 if (!active && spdid != SPD_STANDBY) { 2860 spdsock_diag(q, mp, SPD_DIAGNOSTIC_BAD_SPDID); 2861 return (NULL); 2862 } 2863 2864 if (tunname != NULL) { 2865 /* Acting on a tunnel's SPD. */ 2866 tname = (char *)tunname->spd_if_name; 2867 if (*tname == '\0') { 2868 /* Handle all-polhead cases here. */ 2869 if (msgtype != SPD_FLUSH && msgtype != SPD_DUMP) { 2870 spdsock_diag(q, mp, 2871 SPD_DIAGNOSTIC_NOT_GLOBAL_OP); 2872 return (NULL); 2873 } 2874 return (active ? ALL_ACTIVE_POLHEADS : 2875 ALL_INACTIVE_POLHEADS); 2876 } 2877 2878 itp = get_tunnel_policy(tname, ns); 2879 if (itp == NULL) { 2880 if (msgtype != SPD_ADDRULE) { 2881 /* "Tunnel not found" */ 2882 spdsock_error(q, mp, ENOENT, 0); 2883 return (NULL); 2884 } 2885 2886 errno = 0; 2887 itp = create_tunnel_policy(tname, &errno, &gen, ns); 2888 if (itp == NULL) { 2889 /* 2890 * Something very bad happened, most likely 2891 * ENOMEM. Return an indicator. 2892 */ 2893 spdsock_error(q, mp, errno, 0); 2894 return (NULL); 2895 } 2896 } 2897 /* 2898 * Troll the plumbed tunnels and see if we have a 2899 * match. We need to do this always in case we add 2900 * policy AFTER plumbing a tunnel. 2901 */ 2902 v4 = ill_lookup_on_name(tname, B_FALSE, B_FALSE, NULL, 2903 NULL, NULL, &errno, NULL, ns->netstack_ip); 2904 if (v4 != NULL) 2905 find_tun_and_set_itp(v4, itp); 2906 v6 = ill_lookup_on_name(tname, B_FALSE, B_TRUE, NULL, 2907 NULL, NULL, &errno, NULL, ns->netstack_ip); 2908 if (v6 != NULL) 2909 find_tun_and_set_itp(v6, itp); 2910 ASSERT(itp != NULL); 2911 *itpp = itp; 2912 /* For spdsock dump state, set the polhead's name. */ 2913 if (msgtype == SPD_DUMP) { 2914 ITP_REFHOLD(itp); 2915 ss->spdsock_itp = itp; 2916 ss->spdsock_dump_tunnel = itp->itp_flags & 2917 (active ? ITPF_P_TUNNEL : ITPF_I_TUNNEL); 2918 } 2919 } else { 2920 itp = NULL; 2921 /* For spdsock dump state, indicate it's global policy. */ 2922 if (msgtype == SPD_DUMP) 2923 ss->spdsock_itp = NULL; 2924 } 2925 2926 if (active) 2927 iph = (itp == NULL) ? ipsec_system_policy(ns) : itp->itp_policy; 2928 else 2929 iph = (itp == NULL) ? ipsec_inactive_policy(ns) : 2930 itp->itp_inactive; 2931 2932 ASSERT(iph != NULL); 2933 if (itp != NULL) { 2934 IPPH_REFHOLD(iph); 2935 } 2936 2937 return (iph); 2938 } 2939 2940 static void 2941 spdsock_parse(queue_t *q, mblk_t *mp) 2942 { 2943 spd_msg_t *spmsg; 2944 spd_ext_t *extv[SPD_EXT_MAX + 1]; 2945 uint_t msgsize; 2946 ipsec_policy_head_t *iph; 2947 ipsec_tun_pol_t *itp; 2948 spd_if_t *tunname; 2949 spdsock_t *ss = (spdsock_t *)q->q_ptr; 2950 spd_stack_t *spds = ss->spdsock_spds; 2951 netstack_t *ns = spds->spds_netstack; 2952 ipsec_stack_t *ipss = ns->netstack_ipsec; 2953 2954 /* Make sure nothing's below me. */ 2955 ASSERT(WR(q)->q_next == NULL); 2956 2957 spmsg = (spd_msg_t *)mp->b_rptr; 2958 2959 msgsize = SPD_64TO8(spmsg->spd_msg_len); 2960 2961 if (msgdsize(mp) != msgsize) { 2962 /* 2963 * Message len incorrect w.r.t. actual size. Send an error 2964 * (EMSGSIZE). It may be necessary to massage things a 2965 * bit. For example, if the spd_msg_type is hosed, 2966 * I need to set it to SPD_RESERVED to get delivery to 2967 * do the right thing. Then again, maybe just letting 2968 * the error delivery do the right thing. 2969 */ 2970 ss2dbg(spds, 2971 ("mblk (%lu) and base (%d) message sizes don't jibe.\n", 2972 msgdsize(mp), msgsize)); 2973 spdsock_error(q, mp, EMSGSIZE, SPD_DIAGNOSTIC_NONE); 2974 return; 2975 } 2976 2977 if (msgsize > (uint_t)(mp->b_wptr - mp->b_rptr)) { 2978 /* Get all message into one mblk. */ 2979 if (pullupmsg(mp, -1) == 0) { 2980 /* 2981 * Something screwy happened. 2982 */ 2983 ss3dbg(spds, ("spdsock_parse: pullupmsg() failed.\n")); 2984 return; 2985 } else { 2986 spmsg = (spd_msg_t *)mp->b_rptr; 2987 } 2988 } 2989 2990 switch (spdsock_get_ext(extv, spmsg, msgsize)) { 2991 case KGE_DUP: 2992 /* Handle duplicate extension. */ 2993 ss1dbg(spds, ("Got duplicate extension of type %d.\n", 2994 extv[0]->spd_ext_type)); 2995 spdsock_diag(q, mp, dup_ext_diag[extv[0]->spd_ext_type]); 2996 return; 2997 case KGE_UNK: 2998 /* Handle unknown extension. */ 2999 ss1dbg(spds, ("Got unknown extension of type %d.\n", 3000 extv[0]->spd_ext_type)); 3001 spdsock_diag(q, mp, SPD_DIAGNOSTIC_UNKNOWN_EXT); 3002 return; 3003 case KGE_LEN: 3004 /* Length error. */ 3005 ss1dbg(spds, ("Length %d on extension type %d overrun or 0.\n", 3006 extv[0]->spd_ext_len, extv[0]->spd_ext_type)); 3007 spdsock_diag(q, mp, SPD_DIAGNOSTIC_BAD_EXTLEN); 3008 return; 3009 case KGE_CHK: 3010 /* Reality check failed. */ 3011 ss1dbg(spds, ("Reality check failed on extension type %d.\n", 3012 extv[0]->spd_ext_type)); 3013 spdsock_diag(q, mp, bad_ext_diag[extv[0]->spd_ext_type]); 3014 return; 3015 default: 3016 /* Default case is no errors. */ 3017 break; 3018 } 3019 3020 /* 3021 * Special-case SPD_UPDATEALGS so as not to load IPsec. 3022 */ 3023 if (!ipsec_loaded(ipss) && spmsg->spd_msg_type != SPD_UPDATEALGS) { 3024 spdsock_t *ss = (spdsock_t *)q->q_ptr; 3025 3026 ASSERT(ss != NULL); 3027 ipsec_loader_loadnow(ipss); 3028 ss->spdsock_timeout_arg = mp; 3029 ss->spdsock_timeout = qtimeout(q, spdsock_loadcheck, 3030 q, LOADCHECK_INTERVAL); 3031 return; 3032 } 3033 3034 /* First check for messages that need no polheads at all. */ 3035 switch (spmsg->spd_msg_type) { 3036 case SPD_UPDATEALGS: 3037 spdsock_updatealg(q, mp, extv); 3038 return; 3039 case SPD_ALGLIST: 3040 spdsock_alglist(q, mp); 3041 return; 3042 case SPD_DUMPALGS: 3043 spdsock_dumpalgs(q, mp); 3044 return; 3045 } 3046 3047 /* 3048 * Then check for ones that need both primary/secondary polheads, 3049 * finding the appropriate tunnel policy if need be. 3050 */ 3051 tunname = (spd_if_t *)extv[SPD_EXT_TUN_NAME]; 3052 switch (spmsg->spd_msg_type) { 3053 case SPD_FLIP: 3054 spdsock_flip(q, mp, tunname); 3055 return; 3056 case SPD_CLONE: 3057 spdsock_clone(q, mp, tunname); 3058 return; 3059 } 3060 3061 /* 3062 * Finally, find ones that operate on exactly one polhead, or 3063 * "all polheads" of a given type (active/inactive). 3064 */ 3065 iph = get_appropriate_polhead(q, mp, tunname, spmsg->spd_msg_spdid, 3066 spmsg->spd_msg_type, &itp); 3067 if (iph == NULL) 3068 return; 3069 3070 /* All-polheads-ready operations. */ 3071 switch (spmsg->spd_msg_type) { 3072 case SPD_FLUSH: 3073 if (itp != NULL) { 3074 mutex_enter(&itp->itp_lock); 3075 if (spmsg->spd_msg_spdid == SPD_ACTIVE) 3076 itp->itp_flags &= ~ITPF_PFLAGS; 3077 else 3078 itp->itp_flags &= ~ITPF_IFLAGS; 3079 mutex_exit(&itp->itp_lock); 3080 ITP_REFRELE(itp, ns); 3081 } 3082 spdsock_flush(q, iph, itp, mp); 3083 return; 3084 case SPD_DUMP: 3085 if (itp != NULL) 3086 ITP_REFRELE(itp, ns); 3087 spdsock_dump(q, iph, mp); 3088 return; 3089 } 3090 3091 if (iph == ALL_ACTIVE_POLHEADS || iph == ALL_INACTIVE_POLHEADS) { 3092 spdsock_diag(q, mp, SPD_DIAGNOSTIC_NOT_GLOBAL_OP); 3093 return; 3094 } 3095 3096 /* Single-polhead-only operations. */ 3097 switch (spmsg->spd_msg_type) { 3098 case SPD_ADDRULE: 3099 spdsock_addrule(q, iph, mp, extv, itp); 3100 break; 3101 case SPD_DELETERULE: 3102 spdsock_deleterule(q, iph, mp, extv, itp); 3103 break; 3104 case SPD_LOOKUP: 3105 spdsock_lookup(q, iph, mp, extv, itp); 3106 break; 3107 default: 3108 spdsock_diag(q, mp, SPD_DIAGNOSTIC_BAD_MSG_TYPE); 3109 break; 3110 } 3111 3112 IPPH_REFRELE(iph, ns); 3113 if (itp != NULL) 3114 ITP_REFRELE(itp, ns); 3115 } 3116 3117 /* 3118 * If an algorithm mapping was received before IPsec was loaded, process it. 3119 * Called from the IPsec loader. 3120 */ 3121 void 3122 spdsock_update_pending_algs(netstack_t *ns) 3123 { 3124 spd_stack_t *spds = ns->netstack_spdsock; 3125 3126 mutex_enter(&spds->spds_alg_lock); 3127 if (spds->spds_algs_pending) { 3128 int diag; 3129 3130 spdsock_do_updatealg(spds->spds_extv_algs, &diag, 3131 spds); 3132 spds->spds_algs_pending = B_FALSE; 3133 } 3134 mutex_exit(&spds->spds_alg_lock); 3135 } 3136 3137 static void 3138 spdsock_loadcheck(void *arg) 3139 { 3140 queue_t *q = (queue_t *)arg; 3141 spdsock_t *ss = (spdsock_t *)q->q_ptr; 3142 mblk_t *mp; 3143 ipsec_stack_t *ipss = ss->spdsock_spds->spds_netstack->netstack_ipsec; 3144 3145 ASSERT(ss != NULL); 3146 3147 ss->spdsock_timeout = 0; 3148 mp = ss->spdsock_timeout_arg; 3149 ASSERT(mp != NULL); 3150 ss->spdsock_timeout_arg = NULL; 3151 if (ipsec_failed(ipss)) 3152 spdsock_error(q, mp, EPROTONOSUPPORT, 0); 3153 else 3154 spdsock_parse(q, mp); 3155 } 3156 3157 /* 3158 * Copy relevant state bits. 3159 */ 3160 static void 3161 spdsock_copy_info(struct T_info_ack *tap, spdsock_t *ss) 3162 { 3163 *tap = spdsock_g_t_info_ack; 3164 tap->CURRENT_state = ss->spdsock_state; 3165 tap->OPT_size = spdsock_max_optsize; 3166 } 3167 3168 /* 3169 * This routine responds to T_CAPABILITY_REQ messages. It is called by 3170 * spdsock_wput. Much of the T_CAPABILITY_ACK information is copied from 3171 * spdsock_g_t_info_ack. The current state of the stream is copied from 3172 * spdsock_state. 3173 */ 3174 static void 3175 spdsock_capability_req(queue_t *q, mblk_t *mp) 3176 { 3177 spdsock_t *ss = (spdsock_t *)q->q_ptr; 3178 t_uscalar_t cap_bits1; 3179 struct T_capability_ack *tcap; 3180 3181 cap_bits1 = ((struct T_capability_req *)mp->b_rptr)->CAP_bits1; 3182 3183 mp = tpi_ack_alloc(mp, sizeof (struct T_capability_ack), 3184 mp->b_datap->db_type, T_CAPABILITY_ACK); 3185 if (mp == NULL) 3186 return; 3187 3188 tcap = (struct T_capability_ack *)mp->b_rptr; 3189 tcap->CAP_bits1 = 0; 3190 3191 if (cap_bits1 & TC1_INFO) { 3192 spdsock_copy_info(&tcap->INFO_ack, ss); 3193 tcap->CAP_bits1 |= TC1_INFO; 3194 } 3195 3196 qreply(q, mp); 3197 } 3198 3199 /* 3200 * This routine responds to T_INFO_REQ messages. It is called by 3201 * spdsock_wput_other. 3202 * Most of the T_INFO_ACK information is copied from spdsock_g_t_info_ack. 3203 * The current state of the stream is copied from spdsock_state. 3204 */ 3205 static void 3206 spdsock_info_req(q, mp) 3207 queue_t *q; 3208 mblk_t *mp; 3209 { 3210 mp = tpi_ack_alloc(mp, sizeof (struct T_info_ack), M_PCPROTO, 3211 T_INFO_ACK); 3212 if (mp == NULL) 3213 return; 3214 spdsock_copy_info((struct T_info_ack *)mp->b_rptr, 3215 (spdsock_t *)q->q_ptr); 3216 qreply(q, mp); 3217 } 3218 3219 /* 3220 * spdsock_err_ack. This routine creates a 3221 * T_ERROR_ACK message and passes it 3222 * upstream. 3223 */ 3224 static void 3225 spdsock_err_ack(q, mp, t_error, sys_error) 3226 queue_t *q; 3227 mblk_t *mp; 3228 int t_error; 3229 int sys_error; 3230 { 3231 if ((mp = mi_tpi_err_ack_alloc(mp, t_error, sys_error)) != NULL) 3232 qreply(q, mp); 3233 } 3234 3235 /* 3236 * This routine retrieves the current status of socket options. 3237 * It returns the size of the option retrieved. 3238 */ 3239 /* ARGSUSED */ 3240 int 3241 spdsock_opt_get(queue_t *q, int level, int name, uchar_t *ptr) 3242 { 3243 int *i1 = (int *)ptr; 3244 3245 switch (level) { 3246 case SOL_SOCKET: 3247 switch (name) { 3248 case SO_TYPE: 3249 *i1 = SOCK_RAW; 3250 break; 3251 /* 3252 * The following two items can be manipulated, 3253 * but changing them should do nothing. 3254 */ 3255 case SO_SNDBUF: 3256 *i1 = (int)q->q_hiwat; 3257 break; 3258 case SO_RCVBUF: 3259 *i1 = (int)(RD(q)->q_hiwat); 3260 break; 3261 } 3262 break; 3263 default: 3264 return (0); 3265 } 3266 return (sizeof (int)); 3267 } 3268 3269 /* 3270 * This routine sets socket options. 3271 */ 3272 /* ARGSUSED */ 3273 int 3274 spdsock_opt_set(queue_t *q, uint_t mgmt_flags, int level, int name, 3275 uint_t inlen, uchar_t *invalp, uint_t *outlenp, uchar_t *outvalp, 3276 void *thisdg_attrs, cred_t *cr, mblk_t *mblk) 3277 { 3278 int *i1 = (int *)invalp; 3279 spdsock_t *ss = (spdsock_t *)q->q_ptr; 3280 spd_stack_t *spds = ss->spdsock_spds; 3281 3282 switch (level) { 3283 case SOL_SOCKET: 3284 switch (name) { 3285 case SO_SNDBUF: 3286 if (*i1 > spds->spds_max_buf) 3287 return (ENOBUFS); 3288 q->q_hiwat = *i1; 3289 break; 3290 case SO_RCVBUF: 3291 if (*i1 > spds->spds_max_buf) 3292 return (ENOBUFS); 3293 RD(q)->q_hiwat = *i1; 3294 (void) proto_set_rx_hiwat(RD(q), NULL, *i1); 3295 break; 3296 } 3297 break; 3298 } 3299 return (0); 3300 } 3301 3302 3303 /* 3304 * Handle STREAMS messages. 3305 */ 3306 static void 3307 spdsock_wput_other(queue_t *q, mblk_t *mp) 3308 { 3309 struct iocblk *iocp; 3310 int error; 3311 spdsock_t *ss = (spdsock_t *)q->q_ptr; 3312 spd_stack_t *spds = ss->spdsock_spds; 3313 cred_t *cr; 3314 3315 switch (mp->b_datap->db_type) { 3316 case M_PROTO: 3317 case M_PCPROTO: 3318 if ((mp->b_wptr - mp->b_rptr) < sizeof (long)) { 3319 ss3dbg(spds, ( 3320 "spdsock_wput_other: Not big enough M_PROTO\n")); 3321 freemsg(mp); 3322 return; 3323 } 3324 switch (((union T_primitives *)mp->b_rptr)->type) { 3325 case T_CAPABILITY_REQ: 3326 spdsock_capability_req(q, mp); 3327 break; 3328 case T_INFO_REQ: 3329 spdsock_info_req(q, mp); 3330 break; 3331 case T_SVR4_OPTMGMT_REQ: 3332 case T_OPTMGMT_REQ: 3333 /* 3334 * All Solaris components should pass a db_credp 3335 * for this TPI message, hence we ASSERT. 3336 * But in case there is some other M_PROTO that looks 3337 * like a TPI message sent by some other kernel 3338 * component, we check and return an error. 3339 */ 3340 cr = msg_getcred(mp, NULL); 3341 ASSERT(cr != NULL); 3342 if (cr == NULL) { 3343 spdsock_err_ack(q, mp, TSYSERR, EINVAL); 3344 return; 3345 } 3346 if (((union T_primitives *)mp->b_rptr)->type == 3347 T_SVR4_OPTMGMT_REQ) { 3348 (void) svr4_optcom_req(q, mp, cr, 3349 &spdsock_opt_obj, B_FALSE); 3350 } else { 3351 (void) tpi_optcom_req(q, mp, cr, 3352 &spdsock_opt_obj, B_FALSE); 3353 } 3354 break; 3355 case T_DATA_REQ: 3356 case T_EXDATA_REQ: 3357 case T_ORDREL_REQ: 3358 /* Illegal for spdsock. */ 3359 freemsg(mp); 3360 (void) putnextctl1(RD(q), M_ERROR, EPROTO); 3361 break; 3362 default: 3363 /* Not supported by spdsock. */ 3364 spdsock_err_ack(q, mp, TNOTSUPPORT, 0); 3365 break; 3366 } 3367 return; 3368 case M_IOCTL: 3369 iocp = (struct iocblk *)mp->b_rptr; 3370 error = EINVAL; 3371 3372 switch (iocp->ioc_cmd) { 3373 case ND_SET: 3374 case ND_GET: 3375 if (nd_getset(q, spds->spds_g_nd, mp)) { 3376 qreply(q, mp); 3377 return; 3378 } else 3379 error = ENOENT; 3380 /* FALLTHRU */ 3381 default: 3382 miocnak(q, mp, 0, error); 3383 return; 3384 } 3385 case M_FLUSH: 3386 if (*mp->b_rptr & FLUSHW) { 3387 flushq(q, FLUSHALL); 3388 *mp->b_rptr &= ~FLUSHW; 3389 } 3390 if (*mp->b_rptr & FLUSHR) { 3391 qreply(q, mp); 3392 return; 3393 } 3394 /* Else FALLTHRU */ 3395 } 3396 3397 /* If fell through, just black-hole the message. */ 3398 freemsg(mp); 3399 } 3400 3401 static void 3402 spdsock_wput(queue_t *q, mblk_t *mp) 3403 { 3404 uint8_t *rptr = mp->b_rptr; 3405 mblk_t *mp1; 3406 spdsock_t *ss = (spdsock_t *)q->q_ptr; 3407 spd_stack_t *spds = ss->spdsock_spds; 3408 3409 /* 3410 * If we're dumping, defer processing other messages until the 3411 * dump completes. 3412 */ 3413 if (ss->spdsock_dump_req != NULL) { 3414 if (!putq(q, mp)) 3415 freemsg(mp); 3416 return; 3417 } 3418 3419 switch (mp->b_datap->db_type) { 3420 case M_DATA: 3421 /* 3422 * Silently discard. 3423 */ 3424 ss2dbg(spds, ("raw M_DATA in spdsock.\n")); 3425 freemsg(mp); 3426 return; 3427 case M_PROTO: 3428 case M_PCPROTO: 3429 if ((mp->b_wptr - rptr) >= sizeof (struct T_data_req)) { 3430 if (((union T_primitives *)rptr)->type == T_DATA_REQ) { 3431 if ((mp1 = mp->b_cont) == NULL) { 3432 /* No data after T_DATA_REQ. */ 3433 ss2dbg(spds, 3434 ("No data after DATA_REQ.\n")); 3435 freemsg(mp); 3436 return; 3437 } 3438 freeb(mp); 3439 mp = mp1; 3440 ss2dbg(spds, ("T_DATA_REQ\n")); 3441 break; /* Out of switch. */ 3442 } 3443 } 3444 /* FALLTHRU */ 3445 default: 3446 ss3dbg(spds, ("In default wput case (%d %d).\n", 3447 mp->b_datap->db_type, ((union T_primitives *)rptr)->type)); 3448 spdsock_wput_other(q, mp); 3449 return; 3450 } 3451 3452 /* I now have a PF_POLICY message in an M_DATA block. */ 3453 spdsock_parse(q, mp); 3454 } 3455 3456 /* 3457 * Device open procedure, called when new queue pair created. 3458 * We are passed the read-side queue. 3459 */ 3460 /* ARGSUSED */ 3461 static int 3462 spdsock_open(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp) 3463 { 3464 spdsock_t *ss; 3465 queue_t *oq = OTHERQ(q); 3466 minor_t ssminor; 3467 netstack_t *ns; 3468 spd_stack_t *spds; 3469 3470 if (secpolicy_ip_config(credp, B_FALSE) != 0) 3471 return (EPERM); 3472 3473 if (q->q_ptr != NULL) 3474 return (0); /* Re-open of an already open instance. */ 3475 3476 if (sflag & MODOPEN) 3477 return (EINVAL); 3478 3479 ns = netstack_find_by_cred(credp); 3480 ASSERT(ns != NULL); 3481 spds = ns->netstack_spdsock; 3482 ASSERT(spds != NULL); 3483 3484 ss2dbg(spds, ("Made it into PF_POLICY socket open.\n")); 3485 3486 ssminor = (minor_t)(uintptr_t)vmem_alloc(spdsock_vmem, 1, VM_NOSLEEP); 3487 if (ssminor == 0) { 3488 netstack_rele(spds->spds_netstack); 3489 return (ENOMEM); 3490 } 3491 ss = kmem_zalloc(sizeof (spdsock_t), KM_NOSLEEP); 3492 if (ss == NULL) { 3493 vmem_free(spdsock_vmem, (void *)(uintptr_t)ssminor, 1); 3494 netstack_rele(spds->spds_netstack); 3495 return (ENOMEM); 3496 } 3497 3498 ss->spdsock_minor = ssminor; 3499 ss->spdsock_state = TS_UNBND; 3500 ss->spdsock_dump_req = NULL; 3501 3502 ss->spdsock_spds = spds; 3503 3504 q->q_ptr = ss; 3505 oq->q_ptr = ss; 3506 3507 q->q_hiwat = spds->spds_recv_hiwat; 3508 3509 oq->q_hiwat = spds->spds_xmit_hiwat; 3510 oq->q_lowat = spds->spds_xmit_lowat; 3511 3512 qprocson(q); 3513 (void) proto_set_rx_hiwat(q, NULL, spds->spds_recv_hiwat); 3514 3515 *devp = makedevice(getmajor(*devp), ss->spdsock_minor); 3516 return (0); 3517 } 3518 3519 /* 3520 * Read-side service procedure, invoked when we get back-enabled 3521 * when buffer space becomes available. 3522 * 3523 * Dump another chunk if we were dumping before; when we finish, kick 3524 * the write-side queue in case it's waiting for read queue space. 3525 */ 3526 void 3527 spdsock_rsrv(queue_t *q) 3528 { 3529 spdsock_t *ss = q->q_ptr; 3530 3531 if (ss->spdsock_dump_req != NULL) 3532 spdsock_dump_some(q, ss); 3533 3534 if (ss->spdsock_dump_req == NULL) 3535 qenable(OTHERQ(q)); 3536 } 3537 3538 /* 3539 * Write-side service procedure, invoked when we defer processing 3540 * if another message is received while a dump is in progress. 3541 */ 3542 void 3543 spdsock_wsrv(queue_t *q) 3544 { 3545 spdsock_t *ss = q->q_ptr; 3546 mblk_t *mp; 3547 ipsec_stack_t *ipss = ss->spdsock_spds->spds_netstack->netstack_ipsec; 3548 3549 if (ss->spdsock_dump_req != NULL) { 3550 qenable(OTHERQ(q)); 3551 return; 3552 } 3553 3554 while ((mp = getq(q)) != NULL) { 3555 if (ipsec_loaded(ipss)) { 3556 spdsock_wput(q, mp); 3557 if (ss->spdsock_dump_req != NULL) 3558 return; 3559 } else if (!ipsec_failed(ipss)) { 3560 (void) putq(q, mp); 3561 } else { 3562 spdsock_error(q, mp, EPFNOSUPPORT, 0); 3563 } 3564 } 3565 } 3566 3567 static int 3568 spdsock_close(queue_t *q) 3569 { 3570 spdsock_t *ss = q->q_ptr; 3571 spd_stack_t *spds = ss->spdsock_spds; 3572 3573 qprocsoff(q); 3574 3575 /* Safe assumption. */ 3576 ASSERT(ss != NULL); 3577 3578 if (ss->spdsock_timeout != 0) 3579 (void) quntimeout(q, ss->spdsock_timeout); 3580 3581 ss3dbg(spds, ("Driver close, PF_POLICY socket is going away.\n")); 3582 3583 vmem_free(spdsock_vmem, (void *)(uintptr_t)ss->spdsock_minor, 1); 3584 netstack_rele(ss->spdsock_spds->spds_netstack); 3585 3586 kmem_free(ss, sizeof (spdsock_t)); 3587 return (0); 3588 } 3589 3590 /* 3591 * Merge the IPsec algorithms tables with the received algorithm information. 3592 */ 3593 void 3594 spdsock_merge_algs(spd_stack_t *spds) 3595 { 3596 ipsec_alginfo_t *alg, *oalg; 3597 ipsec_algtype_t algtype; 3598 uint_t algidx, algid, nalgs; 3599 crypto_mech_name_t *mechs; 3600 uint_t mech_count, mech_idx; 3601 netstack_t *ns = spds->spds_netstack; 3602 ipsec_stack_t *ipss = ns->netstack_ipsec; 3603 3604 ASSERT(MUTEX_HELD(&spds->spds_alg_lock)); 3605 3606 /* 3607 * Get the list of supported mechanisms from the crypto framework. 3608 * If a mechanism is supported by KCF, resolve its mechanism 3609 * id and mark it as being valid. This operation must be done 3610 * without holding alg_lock, since it can cause a provider 3611 * module to be loaded and the provider notification callback to 3612 * be invoked. 3613 */ 3614 mechs = crypto_get_mech_list(&mech_count, KM_SLEEP); 3615 for (algtype = 0; algtype < IPSEC_NALGTYPES; algtype++) { 3616 for (algid = 0; algid < IPSEC_MAX_ALGS; algid++) { 3617 int algflags = 0; 3618 crypto_mech_type_t mt = CRYPTO_MECHANISM_INVALID; 3619 3620 alg = spds->spds_algs[algtype][algid]; 3621 if (alg == NULL) 3622 continue; 3623 3624 /* 3625 * The NULL encryption algorithm is a special 3626 * case because there are no mechanisms, yet 3627 * the algorithm is still valid. 3628 */ 3629 if (alg->alg_id == SADB_EALG_NULL) { 3630 alg->alg_mech_type = CRYPTO_MECHANISM_INVALID; 3631 alg->alg_flags = ALG_FLAG_VALID; 3632 continue; 3633 } 3634 3635 for (mech_idx = 0; mech_idx < mech_count; mech_idx++) { 3636 if (strncmp(alg->alg_mech_name, mechs[mech_idx], 3637 CRYPTO_MAX_MECH_NAME) == 0) { 3638 mt = crypto_mech2id(alg->alg_mech_name); 3639 ASSERT(mt != CRYPTO_MECHANISM_INVALID); 3640 algflags = ALG_FLAG_VALID; 3641 break; 3642 } 3643 } 3644 alg->alg_mech_type = mt; 3645 alg->alg_flags = algflags; 3646 } 3647 } 3648 3649 mutex_enter(&ipss->ipsec_alg_lock); 3650 3651 /* 3652 * For each algorithm currently defined, check if it is 3653 * present in the new tables created from the SPD_UPDATEALGS 3654 * message received from user-space. 3655 * Delete the algorithm entries that are currently defined 3656 * but not part of the new tables. 3657 */ 3658 for (algtype = 0; algtype < IPSEC_NALGTYPES; algtype++) { 3659 nalgs = ipss->ipsec_nalgs[algtype]; 3660 for (algidx = 0; algidx < nalgs; algidx++) { 3661 algid = ipss->ipsec_sortlist[algtype][algidx]; 3662 if (spds->spds_algs[algtype][algid] == NULL) 3663 ipsec_alg_unreg(algtype, algid, ns); 3664 } 3665 } 3666 3667 /* 3668 * For each algorithm we just received, check if it is 3669 * present in the currently defined tables. If it is, swap 3670 * the entry with the one we just allocated. 3671 * If the new algorithm is not in the current tables, 3672 * add it. 3673 */ 3674 for (algtype = 0; algtype < IPSEC_NALGTYPES; algtype++) { 3675 for (algid = 0; algid < IPSEC_MAX_ALGS; algid++) { 3676 alg = spds->spds_algs[algtype][algid]; 3677 if (alg == NULL) 3678 continue; 3679 3680 if ((oalg = ipss->ipsec_alglists[algtype][algid]) == 3681 NULL) { 3682 /* 3683 * New algorithm, add it to the algorithm 3684 * table. 3685 */ 3686 ipsec_alg_reg(algtype, alg, ns); 3687 } else { 3688 /* 3689 * Algorithm is already in the table. Swap 3690 * the existing entry with the new one. 3691 */ 3692 ipsec_alg_fix_min_max(alg, algtype, ns); 3693 ipss->ipsec_alglists[algtype][algid] = alg; 3694 ipsec_alg_free(oalg); 3695 } 3696 spds->spds_algs[algtype][algid] = NULL; 3697 } 3698 } 3699 3700 for (algtype = 0; algtype < IPSEC_NALGTYPES; algtype++) { 3701 ipss->ipsec_algs_exec_mode[algtype] = 3702 spds->spds_algs_exec_mode[algtype]; 3703 } 3704 3705 mutex_exit(&ipss->ipsec_alg_lock); 3706 3707 crypto_free_mech_list(mechs, mech_count); 3708 3709 ipsecah_algs_changed(ns); 3710 ipsecesp_algs_changed(ns); 3711 } 3712