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 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 /* Copyright (c) 1990 Mentat Inc. */ 27 28 #include <sys/types.h> 29 #include <sys/stream.h> 30 #include <sys/strsun.h> 31 #define _SUN_TPI_VERSION 2 32 #include <sys/tihdr.h> 33 #include <sys/xti_inet.h> 34 #include <sys/ucred.h> 35 #include <sys/zone.h> 36 #include <sys/ddi.h> 37 #include <sys/sunddi.h> 38 #include <sys/cmn_err.h> 39 #include <sys/debug.h> 40 #include <sys/atomic.h> 41 #include <sys/policy.h> 42 43 #include <sys/systm.h> 44 #include <sys/param.h> 45 #include <sys/kmem.h> 46 #include <sys/sdt.h> 47 #include <sys/socket.h> 48 #include <sys/ethernet.h> 49 #include <sys/mac.h> 50 #include <net/if.h> 51 #include <net/if_types.h> 52 #include <net/if_arp.h> 53 #include <net/route.h> 54 #include <sys/sockio.h> 55 #include <netinet/in.h> 56 #include <net/if_dl.h> 57 58 #include <inet/common.h> 59 #include <inet/mi.h> 60 #include <inet/mib2.h> 61 #include <inet/nd.h> 62 #include <inet/arp.h> 63 #include <inet/snmpcom.h> 64 #include <inet/kstatcom.h> 65 66 #include <netinet/igmp_var.h> 67 #include <netinet/ip6.h> 68 #include <netinet/icmp6.h> 69 #include <netinet/sctp.h> 70 71 #include <inet/ip.h> 72 #include <inet/ip_impl.h> 73 #include <inet/ip6.h> 74 #include <inet/ip6_asp.h> 75 #include <inet/tcp.h> 76 #include <inet/ip_multi.h> 77 #include <inet/ip_if.h> 78 #include <inet/ip_ire.h> 79 #include <inet/ip_ftable.h> 80 #include <inet/ip_rts.h> 81 #include <inet/optcom.h> 82 #include <inet/ip_ndp.h> 83 #include <inet/ip_listutils.h> 84 #include <netinet/igmp.h> 85 #include <netinet/ip_mroute.h> 86 #include <netinet/udp.h> 87 #include <inet/ipp_common.h> 88 89 #include <net/pfkeyv2.h> 90 #include <inet/sadb.h> 91 #include <inet/ipsec_impl.h> 92 #include <inet/ipdrop.h> 93 #include <inet/ip_netinfo.h> 94 95 #include <inet/ipclassifier.h> 96 #include <inet/sctp_ip.h> 97 #include <inet/sctp/sctp_impl.h> 98 #include <inet/udp_impl.h> 99 #include <sys/sunddi.h> 100 101 #include <sys/tsol/label.h> 102 #include <sys/tsol/tnet.h> 103 104 static sin_t sin_null; /* Zero address for quick clears */ 105 static sin6_t sin6_null; /* Zero address for quick clears */ 106 107 /* 108 * Return how much size is needed for the different ancillary data items 109 */ 110 uint_t 111 conn_recvancillary_size(conn_t *connp, crb_t recv_ancillary, 112 ip_recv_attr_t *ira, mblk_t *mp, ip_pkt_t *ipp) 113 { 114 uint_t ancil_size; 115 ip_stack_t *ipst = connp->conn_netstack->netstack_ip; 116 117 /* 118 * If IP_RECVDSTADDR is set we include the destination IP 119 * address as an option. With IP_RECVOPTS we include all 120 * the IP options. 121 */ 122 ancil_size = 0; 123 if (recv_ancillary.crb_recvdstaddr && 124 (ira->ira_flags & IRAF_IS_IPV4)) { 125 ancil_size += sizeof (struct T_opthdr) + 126 sizeof (struct in_addr); 127 IP_STAT(ipst, conn_in_recvdstaddr); 128 } 129 130 /* 131 * ip_recvpktinfo is used for both AF_INET and AF_INET6 but 132 * are different 133 */ 134 if (recv_ancillary.crb_ip_recvpktinfo && 135 connp->conn_family == AF_INET) { 136 ancil_size += sizeof (struct T_opthdr) + 137 sizeof (struct in_pktinfo); 138 IP_STAT(ipst, conn_in_recvpktinfo); 139 } 140 141 if ((recv_ancillary.crb_recvopts) && 142 (ipp->ipp_fields & IPPF_IPV4_OPTIONS)) { 143 ancil_size += sizeof (struct T_opthdr) + 144 ipp->ipp_ipv4_options_len; 145 IP_STAT(ipst, conn_in_recvopts); 146 } 147 148 if (recv_ancillary.crb_recvslla) { 149 ip_stack_t *ipst = connp->conn_netstack->netstack_ip; 150 ill_t *ill; 151 152 /* Make sure ira_l2src is setup if not already */ 153 if (!(ira->ira_flags & IRAF_L2SRC_SET)) { 154 ill = ill_lookup_on_ifindex(ira->ira_rifindex, B_FALSE, 155 ipst); 156 if (ill != NULL) { 157 ip_setl2src(mp, ira, ill); 158 ill_refrele(ill); 159 } 160 } 161 ancil_size += sizeof (struct T_opthdr) + 162 sizeof (struct sockaddr_dl); 163 IP_STAT(ipst, conn_in_recvslla); 164 } 165 166 if (recv_ancillary.crb_recvif) { 167 ancil_size += sizeof (struct T_opthdr) + sizeof (uint_t); 168 IP_STAT(ipst, conn_in_recvif); 169 } 170 171 /* 172 * ip_recvpktinfo is used for both AF_INET and AF_INET6 but 173 * are different 174 */ 175 if (recv_ancillary.crb_ip_recvpktinfo && 176 connp->conn_family == AF_INET6) { 177 ancil_size += sizeof (struct T_opthdr) + 178 sizeof (struct in6_pktinfo); 179 IP_STAT(ipst, conn_in_recvpktinfo); 180 } 181 182 if (recv_ancillary.crb_ipv6_recvhoplimit) { 183 ancil_size += sizeof (struct T_opthdr) + sizeof (int); 184 IP_STAT(ipst, conn_in_recvhoplimit); 185 } 186 187 if (recv_ancillary.crb_ipv6_recvtclass) { 188 ancil_size += sizeof (struct T_opthdr) + sizeof (int); 189 IP_STAT(ipst, conn_in_recvtclass); 190 } 191 192 if (recv_ancillary.crb_ipv6_recvhopopts && 193 (ipp->ipp_fields & IPPF_HOPOPTS)) { 194 ancil_size += sizeof (struct T_opthdr) + ipp->ipp_hopoptslen; 195 IP_STAT(ipst, conn_in_recvhopopts); 196 } 197 /* 198 * To honor RFC3542 when an application asks for both IPV6_RECVDSTOPTS 199 * and IPV6_RECVRTHDR, we pass up the item rthdrdstopts (the destination 200 * options that appear before a routing header. 201 * We also pass them up if IPV6_RECVRTHDRDSTOPTS is set. 202 */ 203 if (ipp->ipp_fields & IPPF_RTHDRDSTOPTS) { 204 if (recv_ancillary.crb_ipv6_recvrthdrdstopts || 205 (recv_ancillary.crb_ipv6_recvdstopts && 206 recv_ancillary.crb_ipv6_recvrthdr)) { 207 ancil_size += sizeof (struct T_opthdr) + 208 ipp->ipp_rthdrdstoptslen; 209 IP_STAT(ipst, conn_in_recvrthdrdstopts); 210 } 211 } 212 if ((recv_ancillary.crb_ipv6_recvrthdr) && 213 (ipp->ipp_fields & IPPF_RTHDR)) { 214 ancil_size += sizeof (struct T_opthdr) + ipp->ipp_rthdrlen; 215 IP_STAT(ipst, conn_in_recvrthdr); 216 } 217 if ((recv_ancillary.crb_ipv6_recvdstopts || 218 recv_ancillary.crb_old_ipv6_recvdstopts) && 219 (ipp->ipp_fields & IPPF_DSTOPTS)) { 220 ancil_size += sizeof (struct T_opthdr) + ipp->ipp_dstoptslen; 221 IP_STAT(ipst, conn_in_recvdstopts); 222 } 223 if (recv_ancillary.crb_recvucred && ira->ira_cred != NULL) { 224 ancil_size += sizeof (struct T_opthdr) + ucredsize; 225 IP_STAT(ipst, conn_in_recvucred); 226 } 227 228 /* 229 * If SO_TIMESTAMP is set allocate the appropriate sized 230 * buffer. Since gethrestime() expects a pointer aligned 231 * argument, we allocate space necessary for extra 232 * alignment (even though it might not be used). 233 */ 234 if (recv_ancillary.crb_timestamp) { 235 ancil_size += sizeof (struct T_opthdr) + 236 sizeof (timestruc_t) + _POINTER_ALIGNMENT; 237 IP_STAT(ipst, conn_in_timestamp); 238 } 239 240 /* 241 * If IP_RECVTTL is set allocate the appropriate sized buffer 242 */ 243 if (recv_ancillary.crb_recvttl && 244 (ira->ira_flags & IRAF_IS_IPV4)) { 245 ancil_size += sizeof (struct T_opthdr) + sizeof (uint8_t); 246 IP_STAT(ipst, conn_in_recvttl); 247 } 248 249 return (ancil_size); 250 } 251 252 /* 253 * Lay down the ancillary data items at "ancil_buf". 254 * Assumes caller has used conn_recvancillary_size to allocate a sufficiently 255 * large buffer - ancil_size. 256 */ 257 void 258 conn_recvancillary_add(conn_t *connp, crb_t recv_ancillary, 259 ip_recv_attr_t *ira, ip_pkt_t *ipp, uchar_t *ancil_buf, uint_t ancil_size) 260 { 261 /* 262 * Copy in destination address before options to avoid 263 * any padding issues. 264 */ 265 if (recv_ancillary.crb_recvdstaddr && 266 (ira->ira_flags & IRAF_IS_IPV4)) { 267 struct T_opthdr *toh; 268 ipaddr_t *dstptr; 269 270 toh = (struct T_opthdr *)ancil_buf; 271 toh->level = IPPROTO_IP; 272 toh->name = IP_RECVDSTADDR; 273 toh->len = sizeof (struct T_opthdr) + sizeof (ipaddr_t); 274 toh->status = 0; 275 ancil_buf += sizeof (struct T_opthdr); 276 dstptr = (ipaddr_t *)ancil_buf; 277 *dstptr = ipp->ipp_addr_v4; 278 ancil_buf += sizeof (ipaddr_t); 279 ancil_size -= toh->len; 280 } 281 282 /* 283 * ip_recvpktinfo is used for both AF_INET and AF_INET6 but 284 * are different 285 */ 286 if (recv_ancillary.crb_ip_recvpktinfo && 287 connp->conn_family == AF_INET) { 288 ip_stack_t *ipst = connp->conn_netstack->netstack_ip; 289 struct T_opthdr *toh; 290 struct in_pktinfo *pktinfop; 291 ill_t *ill; 292 ipif_t *ipif; 293 294 toh = (struct T_opthdr *)ancil_buf; 295 toh->level = IPPROTO_IP; 296 toh->name = IP_PKTINFO; 297 toh->len = sizeof (struct T_opthdr) + sizeof (*pktinfop); 298 toh->status = 0; 299 ancil_buf += sizeof (struct T_opthdr); 300 pktinfop = (struct in_pktinfo *)ancil_buf; 301 302 pktinfop->ipi_ifindex = ira->ira_ruifindex; 303 pktinfop->ipi_spec_dst.s_addr = INADDR_ANY; 304 305 /* Find a good address to report */ 306 ill = ill_lookup_on_ifindex(ira->ira_ruifindex, B_FALSE, ipst); 307 if (ill != NULL) { 308 ipif = ipif_good_addr(ill, IPCL_ZONEID(connp)); 309 if (ipif != NULL) { 310 pktinfop->ipi_spec_dst.s_addr = 311 ipif->ipif_lcl_addr; 312 ipif_refrele(ipif); 313 } 314 ill_refrele(ill); 315 } 316 pktinfop->ipi_addr.s_addr = ipp->ipp_addr_v4; 317 ancil_buf += sizeof (struct in_pktinfo); 318 ancil_size -= toh->len; 319 } 320 321 if ((recv_ancillary.crb_recvopts) && 322 (ipp->ipp_fields & IPPF_IPV4_OPTIONS)) { 323 struct T_opthdr *toh; 324 325 toh = (struct T_opthdr *)ancil_buf; 326 toh->level = IPPROTO_IP; 327 toh->name = IP_RECVOPTS; 328 toh->len = sizeof (struct T_opthdr) + ipp->ipp_ipv4_options_len; 329 toh->status = 0; 330 ancil_buf += sizeof (struct T_opthdr); 331 bcopy(ipp->ipp_ipv4_options, ancil_buf, 332 ipp->ipp_ipv4_options_len); 333 ancil_buf += ipp->ipp_ipv4_options_len; 334 ancil_size -= toh->len; 335 } 336 337 if (recv_ancillary.crb_recvslla) { 338 ip_stack_t *ipst = connp->conn_netstack->netstack_ip; 339 struct T_opthdr *toh; 340 struct sockaddr_dl *dstptr; 341 ill_t *ill; 342 int alen = 0; 343 344 ill = ill_lookup_on_ifindex(ira->ira_rifindex, B_FALSE, ipst); 345 if (ill != NULL) 346 alen = ill->ill_phys_addr_length; 347 348 /* 349 * For loopback multicast and broadcast the packet arrives 350 * with ira_ruifdex being the physical interface, but 351 * ira_l2src is all zero since ip_postfrag_loopback doesn't 352 * know our l2src. We don't report the address in that case. 353 */ 354 if (ira->ira_flags & IRAF_LOOPBACK) 355 alen = 0; 356 357 toh = (struct T_opthdr *)ancil_buf; 358 toh->level = IPPROTO_IP; 359 toh->name = IP_RECVSLLA; 360 toh->len = sizeof (struct T_opthdr) + 361 sizeof (struct sockaddr_dl); 362 toh->status = 0; 363 ancil_buf += sizeof (struct T_opthdr); 364 dstptr = (struct sockaddr_dl *)ancil_buf; 365 dstptr->sdl_family = AF_LINK; 366 dstptr->sdl_index = ira->ira_ruifindex; 367 if (ill != NULL) 368 dstptr->sdl_type = ill->ill_type; 369 else 370 dstptr->sdl_type = 0; 371 dstptr->sdl_nlen = 0; 372 dstptr->sdl_alen = alen; 373 dstptr->sdl_slen = 0; 374 bcopy(ira->ira_l2src, dstptr->sdl_data, alen); 375 ancil_buf += sizeof (struct sockaddr_dl); 376 ancil_size -= toh->len; 377 if (ill != NULL) 378 ill_refrele(ill); 379 } 380 381 if (recv_ancillary.crb_recvif) { 382 struct T_opthdr *toh; 383 uint_t *dstptr; 384 385 toh = (struct T_opthdr *)ancil_buf; 386 toh->level = IPPROTO_IP; 387 toh->name = IP_RECVIF; 388 toh->len = sizeof (struct T_opthdr) + sizeof (uint_t); 389 toh->status = 0; 390 ancil_buf += sizeof (struct T_opthdr); 391 dstptr = (uint_t *)ancil_buf; 392 *dstptr = ira->ira_ruifindex; 393 ancil_buf += sizeof (uint_t); 394 ancil_size -= toh->len; 395 } 396 397 /* 398 * ip_recvpktinfo is used for both AF_INET and AF_INET6 but 399 * are different 400 */ 401 if (recv_ancillary.crb_ip_recvpktinfo && 402 connp->conn_family == AF_INET6) { 403 struct T_opthdr *toh; 404 struct in6_pktinfo *pkti; 405 406 toh = (struct T_opthdr *)ancil_buf; 407 toh->level = IPPROTO_IPV6; 408 toh->name = IPV6_PKTINFO; 409 toh->len = sizeof (struct T_opthdr) + sizeof (*pkti); 410 toh->status = 0; 411 ancil_buf += sizeof (struct T_opthdr); 412 pkti = (struct in6_pktinfo *)ancil_buf; 413 if (ira->ira_flags & IRAF_IS_IPV4) { 414 IN6_IPADDR_TO_V4MAPPED(ipp->ipp_addr_v4, 415 &pkti->ipi6_addr); 416 } else { 417 pkti->ipi6_addr = ipp->ipp_addr; 418 } 419 pkti->ipi6_ifindex = ira->ira_ruifindex; 420 421 ancil_buf += sizeof (*pkti); 422 ancil_size -= toh->len; 423 } 424 if (recv_ancillary.crb_ipv6_recvhoplimit) { 425 struct T_opthdr *toh; 426 427 toh = (struct T_opthdr *)ancil_buf; 428 toh->level = IPPROTO_IPV6; 429 toh->name = IPV6_HOPLIMIT; 430 toh->len = sizeof (struct T_opthdr) + sizeof (uint_t); 431 toh->status = 0; 432 ancil_buf += sizeof (struct T_opthdr); 433 *(uint_t *)ancil_buf = ipp->ipp_hoplimit; 434 ancil_buf += sizeof (uint_t); 435 ancil_size -= toh->len; 436 } 437 if (recv_ancillary.crb_ipv6_recvtclass) { 438 struct T_opthdr *toh; 439 440 toh = (struct T_opthdr *)ancil_buf; 441 toh->level = IPPROTO_IPV6; 442 toh->name = IPV6_TCLASS; 443 toh->len = sizeof (struct T_opthdr) + sizeof (uint_t); 444 toh->status = 0; 445 ancil_buf += sizeof (struct T_opthdr); 446 447 if (ira->ira_flags & IRAF_IS_IPV4) 448 *(uint_t *)ancil_buf = ipp->ipp_type_of_service; 449 else 450 *(uint_t *)ancil_buf = ipp->ipp_tclass; 451 ancil_buf += sizeof (uint_t); 452 ancil_size -= toh->len; 453 } 454 if (recv_ancillary.crb_ipv6_recvhopopts && 455 (ipp->ipp_fields & IPPF_HOPOPTS)) { 456 struct T_opthdr *toh; 457 458 toh = (struct T_opthdr *)ancil_buf; 459 toh->level = IPPROTO_IPV6; 460 toh->name = IPV6_HOPOPTS; 461 toh->len = sizeof (struct T_opthdr) + ipp->ipp_hopoptslen; 462 toh->status = 0; 463 ancil_buf += sizeof (struct T_opthdr); 464 bcopy(ipp->ipp_hopopts, ancil_buf, ipp->ipp_hopoptslen); 465 ancil_buf += ipp->ipp_hopoptslen; 466 ancil_size -= toh->len; 467 } 468 /* 469 * To honor RFC3542 when an application asks for both IPV6_RECVDSTOPTS 470 * and IPV6_RECVRTHDR, we pass up the item rthdrdstopts (the destination 471 * options that appear before a routing header. 472 * We also pass them up if IPV6_RECVRTHDRDSTOPTS is set. 473 */ 474 if (ipp->ipp_fields & IPPF_RTHDRDSTOPTS) { 475 if (recv_ancillary.crb_ipv6_recvrthdrdstopts || 476 (recv_ancillary.crb_ipv6_recvdstopts && 477 recv_ancillary.crb_ipv6_recvrthdr)) { 478 struct T_opthdr *toh; 479 480 toh = (struct T_opthdr *)ancil_buf; 481 toh->level = IPPROTO_IPV6; 482 toh->name = IPV6_DSTOPTS; 483 toh->len = sizeof (struct T_opthdr) + 484 ipp->ipp_rthdrdstoptslen; 485 toh->status = 0; 486 ancil_buf += sizeof (struct T_opthdr); 487 bcopy(ipp->ipp_rthdrdstopts, ancil_buf, 488 ipp->ipp_rthdrdstoptslen); 489 ancil_buf += ipp->ipp_rthdrdstoptslen; 490 ancil_size -= toh->len; 491 } 492 } 493 if (recv_ancillary.crb_ipv6_recvrthdr && 494 (ipp->ipp_fields & IPPF_RTHDR)) { 495 struct T_opthdr *toh; 496 497 toh = (struct T_opthdr *)ancil_buf; 498 toh->level = IPPROTO_IPV6; 499 toh->name = IPV6_RTHDR; 500 toh->len = sizeof (struct T_opthdr) + ipp->ipp_rthdrlen; 501 toh->status = 0; 502 ancil_buf += sizeof (struct T_opthdr); 503 bcopy(ipp->ipp_rthdr, ancil_buf, ipp->ipp_rthdrlen); 504 ancil_buf += ipp->ipp_rthdrlen; 505 ancil_size -= toh->len; 506 } 507 if ((recv_ancillary.crb_ipv6_recvdstopts || 508 recv_ancillary.crb_old_ipv6_recvdstopts) && 509 (ipp->ipp_fields & IPPF_DSTOPTS)) { 510 struct T_opthdr *toh; 511 512 toh = (struct T_opthdr *)ancil_buf; 513 toh->level = IPPROTO_IPV6; 514 toh->name = IPV6_DSTOPTS; 515 toh->len = sizeof (struct T_opthdr) + ipp->ipp_dstoptslen; 516 toh->status = 0; 517 ancil_buf += sizeof (struct T_opthdr); 518 bcopy(ipp->ipp_dstopts, ancil_buf, ipp->ipp_dstoptslen); 519 ancil_buf += ipp->ipp_dstoptslen; 520 ancil_size -= toh->len; 521 } 522 523 if (recv_ancillary.crb_recvucred && ira->ira_cred != NULL) { 524 struct T_opthdr *toh; 525 cred_t *rcr = connp->conn_cred; 526 527 toh = (struct T_opthdr *)ancil_buf; 528 toh->level = SOL_SOCKET; 529 toh->name = SCM_UCRED; 530 toh->len = sizeof (struct T_opthdr) + ucredsize; 531 toh->status = 0; 532 (void) cred2ucred(ira->ira_cred, ira->ira_cpid, &toh[1], rcr); 533 ancil_buf += toh->len; 534 ancil_size -= toh->len; 535 } 536 if (recv_ancillary.crb_timestamp) { 537 struct T_opthdr *toh; 538 539 toh = (struct T_opthdr *)ancil_buf; 540 toh->level = SOL_SOCKET; 541 toh->name = SCM_TIMESTAMP; 542 toh->len = sizeof (struct T_opthdr) + 543 sizeof (timestruc_t) + _POINTER_ALIGNMENT; 544 toh->status = 0; 545 ancil_buf += sizeof (struct T_opthdr); 546 /* Align for gethrestime() */ 547 ancil_buf = (uchar_t *)P2ROUNDUP((intptr_t)ancil_buf, 548 sizeof (intptr_t)); 549 gethrestime((timestruc_t *)ancil_buf); 550 ancil_buf = (uchar_t *)toh + toh->len; 551 ancil_size -= toh->len; 552 } 553 554 /* 555 * CAUTION: 556 * Due to aligment issues 557 * Processing of IP_RECVTTL option 558 * should always be the last. Adding 559 * any option processing after this will 560 * cause alignment panic. 561 */ 562 if (recv_ancillary.crb_recvttl && 563 (ira->ira_flags & IRAF_IS_IPV4)) { 564 struct T_opthdr *toh; 565 uint8_t *dstptr; 566 567 toh = (struct T_opthdr *)ancil_buf; 568 toh->level = IPPROTO_IP; 569 toh->name = IP_RECVTTL; 570 toh->len = sizeof (struct T_opthdr) + sizeof (uint8_t); 571 toh->status = 0; 572 ancil_buf += sizeof (struct T_opthdr); 573 dstptr = (uint8_t *)ancil_buf; 574 *dstptr = ipp->ipp_hoplimit; 575 ancil_buf += sizeof (uint8_t); 576 ancil_size -= toh->len; 577 } 578 579 /* Consumed all of allocated space */ 580 ASSERT(ancil_size == 0); 581 582 } 583 584 /* 585 * This routine retrieves the current status of socket options. 586 * It returns the size of the option retrieved, or -1. 587 */ 588 int 589 conn_opt_get(conn_opt_arg_t *coa, t_scalar_t level, t_scalar_t name, 590 uchar_t *ptr) 591 { 592 int *i1 = (int *)ptr; 593 conn_t *connp = coa->coa_connp; 594 ip_xmit_attr_t *ixa = coa->coa_ixa; 595 ip_pkt_t *ipp = coa->coa_ipp; 596 ip_stack_t *ipst = ixa->ixa_ipst; 597 uint_t len; 598 599 ASSERT(MUTEX_HELD(&coa->coa_connp->conn_lock)); 600 601 switch (level) { 602 case SOL_SOCKET: 603 switch (name) { 604 case SO_DEBUG: 605 *i1 = connp->conn_debug ? SO_DEBUG : 0; 606 break; /* goto sizeof (int) option return */ 607 case SO_KEEPALIVE: 608 *i1 = connp->conn_keepalive ? SO_KEEPALIVE : 0; 609 break; 610 case SO_LINGER: { 611 struct linger *lgr = (struct linger *)ptr; 612 613 lgr->l_onoff = connp->conn_linger ? SO_LINGER : 0; 614 lgr->l_linger = connp->conn_lingertime; 615 } 616 return (sizeof (struct linger)); 617 618 case SO_OOBINLINE: 619 *i1 = connp->conn_oobinline ? SO_OOBINLINE : 0; 620 break; 621 case SO_REUSEADDR: 622 *i1 = connp->conn_reuseaddr ? SO_REUSEADDR : 0; 623 break; /* goto sizeof (int) option return */ 624 case SO_TYPE: 625 *i1 = connp->conn_so_type; 626 break; /* goto sizeof (int) option return */ 627 case SO_DONTROUTE: 628 *i1 = (ixa->ixa_flags & IXAF_DONTROUTE) ? 629 SO_DONTROUTE : 0; 630 break; /* goto sizeof (int) option return */ 631 case SO_USELOOPBACK: 632 *i1 = connp->conn_useloopback ? SO_USELOOPBACK : 0; 633 break; /* goto sizeof (int) option return */ 634 case SO_BROADCAST: 635 *i1 = connp->conn_broadcast ? SO_BROADCAST : 0; 636 break; /* goto sizeof (int) option return */ 637 638 case SO_SNDBUF: 639 *i1 = connp->conn_sndbuf; 640 break; /* goto sizeof (int) option return */ 641 case SO_RCVBUF: 642 *i1 = connp->conn_rcvbuf; 643 break; /* goto sizeof (int) option return */ 644 case SO_RCVTIMEO: 645 case SO_SNDTIMEO: 646 /* 647 * Pass these two options in order for third part 648 * protocol usage. Here just return directly. 649 */ 650 *i1 = 0; 651 break; 652 case SO_DGRAM_ERRIND: 653 *i1 = connp->conn_dgram_errind ? SO_DGRAM_ERRIND : 0; 654 break; /* goto sizeof (int) option return */ 655 case SO_RECVUCRED: 656 *i1 = connp->conn_recv_ancillary.crb_recvucred; 657 break; /* goto sizeof (int) option return */ 658 case SO_TIMESTAMP: 659 *i1 = connp->conn_recv_ancillary.crb_timestamp; 660 break; /* goto sizeof (int) option return */ 661 #ifdef SO_VRRP 662 case SO_VRRP: 663 *i1 = connp->conn_isvrrp; 664 break; /* goto sizeof (int) option return */ 665 #endif 666 case SO_ANON_MLP: 667 *i1 = connp->conn_anon_mlp; 668 break; /* goto sizeof (int) option return */ 669 case SO_MAC_EXEMPT: 670 *i1 = (connp->conn_mac_mode == CONN_MAC_AWARE); 671 break; /* goto sizeof (int) option return */ 672 case SO_MAC_IMPLICIT: 673 *i1 = (connp->conn_mac_mode == CONN_MAC_IMPLICIT); 674 break; /* goto sizeof (int) option return */ 675 case SO_ALLZONES: 676 *i1 = connp->conn_allzones; 677 break; /* goto sizeof (int) option return */ 678 case SO_EXCLBIND: 679 *i1 = connp->conn_exclbind ? SO_EXCLBIND : 0; 680 break; 681 case SO_PROTOTYPE: 682 *i1 = connp->conn_proto; 683 break; 684 685 case SO_DOMAIN: 686 *i1 = connp->conn_family; 687 break; 688 default: 689 return (-1); 690 } 691 break; 692 case IPPROTO_IP: 693 if (connp->conn_family != AF_INET) 694 return (-1); 695 switch (name) { 696 case IP_OPTIONS: 697 case T_IP_OPTIONS: 698 if (!(ipp->ipp_fields & IPPF_IPV4_OPTIONS)) 699 return (0); 700 701 len = ipp->ipp_ipv4_options_len; 702 if (len > 0) { 703 bcopy(ipp->ipp_ipv4_options, ptr, len); 704 } 705 return (len); 706 707 case IP_PKTINFO: { 708 /* 709 * This also handles IP_RECVPKTINFO. 710 * IP_PKTINFO and IP_RECVPKTINFO have same value. 711 * Differentiation is based on the size of the 712 * argument passed in. 713 */ 714 struct in_pktinfo *pktinfo; 715 716 #ifdef notdef 717 /* optcom doesn't provide a length with "get" */ 718 if (inlen == sizeof (int)) { 719 /* This is IP_RECVPKTINFO option. */ 720 *i1 = connp->conn_recv_ancillary. 721 crb_ip_recvpktinfo; 722 return (sizeof (int)); 723 } 724 #endif 725 /* XXX assumes that caller has room for max size! */ 726 727 pktinfo = (struct in_pktinfo *)ptr; 728 pktinfo->ipi_ifindex = ixa->ixa_ifindex; 729 if (ipp->ipp_fields & IPPF_ADDR) 730 pktinfo->ipi_spec_dst.s_addr = ipp->ipp_addr_v4; 731 else 732 pktinfo->ipi_spec_dst.s_addr = INADDR_ANY; 733 return (sizeof (struct in_pktinfo)); 734 } 735 case IP_DONTFRAG: 736 *i1 = (ixa->ixa_flags & IXAF_DONTFRAG) != 0; 737 return (sizeof (int)); 738 case IP_TOS: 739 case T_IP_TOS: 740 *i1 = (int)ipp->ipp_type_of_service; 741 break; /* goto sizeof (int) option return */ 742 case IP_TTL: 743 *i1 = (int)ipp->ipp_unicast_hops; 744 break; /* goto sizeof (int) option return */ 745 case IP_DHCPINIT_IF: 746 return (-1); 747 case IP_NEXTHOP: 748 if (ixa->ixa_flags & IXAF_NEXTHOP_SET) { 749 *(ipaddr_t *)ptr = ixa->ixa_nexthop_v4; 750 return (sizeof (ipaddr_t)); 751 } else { 752 return (0); 753 } 754 755 case IP_MULTICAST_IF: 756 /* 0 address if not set */ 757 *(ipaddr_t *)ptr = ixa->ixa_multicast_ifaddr; 758 return (sizeof (ipaddr_t)); 759 case IP_MULTICAST_TTL: 760 *(uchar_t *)ptr = ixa->ixa_multicast_ttl; 761 return (sizeof (uchar_t)); 762 case IP_MULTICAST_LOOP: 763 *ptr = (ixa->ixa_flags & IXAF_MULTICAST_LOOP) ? 1 : 0; 764 return (sizeof (uint8_t)); 765 case IP_RECVOPTS: 766 *i1 = connp->conn_recv_ancillary.crb_recvopts; 767 break; /* goto sizeof (int) option return */ 768 case IP_RECVDSTADDR: 769 *i1 = connp->conn_recv_ancillary.crb_recvdstaddr; 770 break; /* goto sizeof (int) option return */ 771 case IP_RECVIF: 772 *i1 = connp->conn_recv_ancillary.crb_recvif; 773 break; /* goto sizeof (int) option return */ 774 case IP_RECVSLLA: 775 *i1 = connp->conn_recv_ancillary.crb_recvslla; 776 break; /* goto sizeof (int) option return */ 777 case IP_RECVTTL: 778 *i1 = connp->conn_recv_ancillary.crb_recvttl; 779 break; /* goto sizeof (int) option return */ 780 case IP_ADD_MEMBERSHIP: 781 case IP_DROP_MEMBERSHIP: 782 case MCAST_JOIN_GROUP: 783 case MCAST_LEAVE_GROUP: 784 case IP_BLOCK_SOURCE: 785 case IP_UNBLOCK_SOURCE: 786 case IP_ADD_SOURCE_MEMBERSHIP: 787 case IP_DROP_SOURCE_MEMBERSHIP: 788 case MCAST_BLOCK_SOURCE: 789 case MCAST_UNBLOCK_SOURCE: 790 case MCAST_JOIN_SOURCE_GROUP: 791 case MCAST_LEAVE_SOURCE_GROUP: 792 case MRT_INIT: 793 case MRT_DONE: 794 case MRT_ADD_VIF: 795 case MRT_DEL_VIF: 796 case MRT_ADD_MFC: 797 case MRT_DEL_MFC: 798 /* cannot "get" the value for these */ 799 return (-1); 800 case MRT_VERSION: 801 case MRT_ASSERT: 802 (void) ip_mrouter_get(name, connp, ptr); 803 return (sizeof (int)); 804 case IP_SEC_OPT: 805 return (ipsec_req_from_conn(connp, (ipsec_req_t *)ptr, 806 IPSEC_AF_V4)); 807 case IP_BOUND_IF: 808 /* Zero if not set */ 809 *i1 = connp->conn_bound_if; 810 break; /* goto sizeof (int) option return */ 811 case IP_UNSPEC_SRC: 812 *i1 = connp->conn_unspec_src; 813 break; /* goto sizeof (int) option return */ 814 case IP_BROADCAST_TTL: 815 if (ixa->ixa_flags & IXAF_BROADCAST_TTL_SET) 816 *(uchar_t *)ptr = ixa->ixa_broadcast_ttl; 817 else 818 *(uchar_t *)ptr = ipst->ips_ip_broadcast_ttl; 819 return (sizeof (uchar_t)); 820 default: 821 return (-1); 822 } 823 break; 824 case IPPROTO_IPV6: 825 if (connp->conn_family != AF_INET6) 826 return (-1); 827 switch (name) { 828 case IPV6_UNICAST_HOPS: 829 *i1 = (int)ipp->ipp_unicast_hops; 830 break; /* goto sizeof (int) option return */ 831 case IPV6_MULTICAST_IF: 832 /* 0 index if not set */ 833 *i1 = ixa->ixa_multicast_ifindex; 834 break; /* goto sizeof (int) option return */ 835 case IPV6_MULTICAST_HOPS: 836 *i1 = ixa->ixa_multicast_ttl; 837 break; /* goto sizeof (int) option return */ 838 case IPV6_MULTICAST_LOOP: 839 *i1 = (ixa->ixa_flags & IXAF_MULTICAST_LOOP) ? 1 : 0; 840 break; /* goto sizeof (int) option return */ 841 case IPV6_JOIN_GROUP: 842 case IPV6_LEAVE_GROUP: 843 case MCAST_JOIN_GROUP: 844 case MCAST_LEAVE_GROUP: 845 case MCAST_BLOCK_SOURCE: 846 case MCAST_UNBLOCK_SOURCE: 847 case MCAST_JOIN_SOURCE_GROUP: 848 case MCAST_LEAVE_SOURCE_GROUP: 849 /* cannot "get" the value for these */ 850 return (-1); 851 case IPV6_BOUND_IF: 852 /* Zero if not set */ 853 *i1 = connp->conn_bound_if; 854 break; /* goto sizeof (int) option return */ 855 case IPV6_UNSPEC_SRC: 856 *i1 = connp->conn_unspec_src; 857 break; /* goto sizeof (int) option return */ 858 case IPV6_RECVPKTINFO: 859 *i1 = connp->conn_recv_ancillary.crb_ip_recvpktinfo; 860 break; /* goto sizeof (int) option return */ 861 case IPV6_RECVTCLASS: 862 *i1 = connp->conn_recv_ancillary.crb_ipv6_recvtclass; 863 break; /* goto sizeof (int) option return */ 864 case IPV6_RECVPATHMTU: 865 *i1 = connp->conn_ipv6_recvpathmtu; 866 break; /* goto sizeof (int) option return */ 867 case IPV6_RECVHOPLIMIT: 868 *i1 = connp->conn_recv_ancillary.crb_ipv6_recvhoplimit; 869 break; /* goto sizeof (int) option return */ 870 case IPV6_RECVHOPOPTS: 871 *i1 = connp->conn_recv_ancillary.crb_ipv6_recvhopopts; 872 break; /* goto sizeof (int) option return */ 873 case IPV6_RECVDSTOPTS: 874 *i1 = connp->conn_recv_ancillary.crb_ipv6_recvdstopts; 875 break; /* goto sizeof (int) option return */ 876 case _OLD_IPV6_RECVDSTOPTS: 877 *i1 = 878 connp->conn_recv_ancillary.crb_old_ipv6_recvdstopts; 879 break; /* goto sizeof (int) option return */ 880 case IPV6_RECVRTHDRDSTOPTS: 881 *i1 = connp->conn_recv_ancillary. 882 crb_ipv6_recvrthdrdstopts; 883 break; /* goto sizeof (int) option return */ 884 case IPV6_RECVRTHDR: 885 *i1 = connp->conn_recv_ancillary.crb_ipv6_recvrthdr; 886 break; /* goto sizeof (int) option return */ 887 case IPV6_PKTINFO: { 888 /* XXX assumes that caller has room for max size! */ 889 struct in6_pktinfo *pkti; 890 891 pkti = (struct in6_pktinfo *)ptr; 892 pkti->ipi6_ifindex = ixa->ixa_ifindex; 893 if (ipp->ipp_fields & IPPF_ADDR) 894 pkti->ipi6_addr = ipp->ipp_addr; 895 else 896 pkti->ipi6_addr = ipv6_all_zeros; 897 return (sizeof (struct in6_pktinfo)); 898 } 899 case IPV6_TCLASS: 900 *i1 = ipp->ipp_tclass; 901 break; /* goto sizeof (int) option return */ 902 case IPV6_NEXTHOP: { 903 sin6_t *sin6 = (sin6_t *)ptr; 904 905 if (ixa->ixa_flags & IXAF_NEXTHOP_SET) 906 return (0); 907 908 *sin6 = sin6_null; 909 sin6->sin6_family = AF_INET6; 910 sin6->sin6_addr = ixa->ixa_nexthop_v6; 911 912 return (sizeof (sin6_t)); 913 } 914 case IPV6_HOPOPTS: 915 if (!(ipp->ipp_fields & IPPF_HOPOPTS)) 916 return (0); 917 bcopy(ipp->ipp_hopopts, ptr, 918 ipp->ipp_hopoptslen); 919 return (ipp->ipp_hopoptslen); 920 case IPV6_RTHDRDSTOPTS: 921 if (!(ipp->ipp_fields & IPPF_RTHDRDSTOPTS)) 922 return (0); 923 bcopy(ipp->ipp_rthdrdstopts, ptr, 924 ipp->ipp_rthdrdstoptslen); 925 return (ipp->ipp_rthdrdstoptslen); 926 case IPV6_RTHDR: 927 if (!(ipp->ipp_fields & IPPF_RTHDR)) 928 return (0); 929 bcopy(ipp->ipp_rthdr, ptr, ipp->ipp_rthdrlen); 930 return (ipp->ipp_rthdrlen); 931 case IPV6_DSTOPTS: 932 if (!(ipp->ipp_fields & IPPF_DSTOPTS)) 933 return (0); 934 bcopy(ipp->ipp_dstopts, ptr, ipp->ipp_dstoptslen); 935 return (ipp->ipp_dstoptslen); 936 case IPV6_PATHMTU: 937 return (ip_fill_mtuinfo(connp, ixa, 938 (struct ip6_mtuinfo *)ptr)); 939 case IPV6_SEC_OPT: 940 return (ipsec_req_from_conn(connp, (ipsec_req_t *)ptr, 941 IPSEC_AF_V6)); 942 case IPV6_SRC_PREFERENCES: 943 return (ip6_get_src_preferences(ixa, (uint32_t *)ptr)); 944 case IPV6_DONTFRAG: 945 *i1 = (ixa->ixa_flags & IXAF_DONTFRAG) != 0; 946 return (sizeof (int)); 947 case IPV6_USE_MIN_MTU: 948 if (ixa->ixa_flags & IXAF_USE_MIN_MTU) 949 *i1 = ixa->ixa_use_min_mtu; 950 else 951 *i1 = IPV6_USE_MIN_MTU_MULTICAST; 952 break; 953 case IPV6_V6ONLY: 954 *i1 = connp->conn_ipv6_v6only; 955 return (sizeof (int)); 956 default: 957 return (-1); 958 } 959 break; 960 case IPPROTO_UDP: 961 switch (name) { 962 case UDP_ANONPRIVBIND: 963 *i1 = connp->conn_anon_priv_bind; 964 break; 965 case UDP_EXCLBIND: 966 *i1 = connp->conn_exclbind ? UDP_EXCLBIND : 0; 967 break; 968 default: 969 return (-1); 970 } 971 break; 972 case IPPROTO_TCP: 973 switch (name) { 974 case TCP_RECVDSTADDR: 975 *i1 = connp->conn_recv_ancillary.crb_recvdstaddr; 976 break; 977 case TCP_ANONPRIVBIND: 978 *i1 = connp->conn_anon_priv_bind; 979 break; 980 case TCP_EXCLBIND: 981 *i1 = connp->conn_exclbind ? TCP_EXCLBIND : 0; 982 break; 983 default: 984 return (-1); 985 } 986 break; 987 default: 988 return (-1); 989 } 990 return (sizeof (int)); 991 } 992 993 static int conn_opt_set_socket(conn_opt_arg_t *coa, t_scalar_t name, 994 uint_t inlen, uchar_t *invalp, boolean_t checkonly, cred_t *cr); 995 static int conn_opt_set_ip(conn_opt_arg_t *coa, t_scalar_t name, 996 uint_t inlen, uchar_t *invalp, boolean_t checkonly, cred_t *cr); 997 static int conn_opt_set_ipv6(conn_opt_arg_t *coa, t_scalar_t name, 998 uint_t inlen, uchar_t *invalp, boolean_t checkonly, cred_t *cr); 999 static int conn_opt_set_udp(conn_opt_arg_t *coa, t_scalar_t name, 1000 uint_t inlen, uchar_t *invalp, boolean_t checkonly, cred_t *cr); 1001 static int conn_opt_set_tcp(conn_opt_arg_t *coa, t_scalar_t name, 1002 uint_t inlen, uchar_t *invalp, boolean_t checkonly, cred_t *cr); 1003 1004 /* 1005 * This routine sets the most common socket options including some 1006 * that are transport/ULP specific. 1007 * It returns errno or zero. 1008 * 1009 * For fixed length options, there is no sanity check 1010 * of passed in length is done. It is assumed *_optcom_req() 1011 * routines do the right thing. 1012 */ 1013 int 1014 conn_opt_set(conn_opt_arg_t *coa, t_scalar_t level, t_scalar_t name, 1015 uint_t inlen, uchar_t *invalp, boolean_t checkonly, cred_t *cr) 1016 { 1017 ASSERT(MUTEX_NOT_HELD(&coa->coa_connp->conn_lock)); 1018 1019 /* We have different functions for different levels */ 1020 switch (level) { 1021 case SOL_SOCKET: 1022 return (conn_opt_set_socket(coa, name, inlen, invalp, 1023 checkonly, cr)); 1024 case IPPROTO_IP: 1025 return (conn_opt_set_ip(coa, name, inlen, invalp, 1026 checkonly, cr)); 1027 case IPPROTO_IPV6: 1028 return (conn_opt_set_ipv6(coa, name, inlen, invalp, 1029 checkonly, cr)); 1030 case IPPROTO_UDP: 1031 return (conn_opt_set_udp(coa, name, inlen, invalp, 1032 checkonly, cr)); 1033 case IPPROTO_TCP: 1034 return (conn_opt_set_tcp(coa, name, inlen, invalp, 1035 checkonly, cr)); 1036 default: 1037 return (0); 1038 } 1039 } 1040 1041 /* 1042 * Handle SOL_SOCKET 1043 * Note that we do not handle SO_PROTOTYPE here. The ULPs that support 1044 * it implement their own checks and setting of conn_proto. 1045 */ 1046 /* ARGSUSED1 */ 1047 static int 1048 conn_opt_set_socket(conn_opt_arg_t *coa, t_scalar_t name, uint_t inlen, 1049 uchar_t *invalp, boolean_t checkonly, cred_t *cr) 1050 { 1051 conn_t *connp = coa->coa_connp; 1052 ip_xmit_attr_t *ixa = coa->coa_ixa; 1053 int *i1 = (int *)invalp; 1054 boolean_t onoff = (*i1 == 0) ? 0 : 1; 1055 1056 switch (name) { 1057 case SO_ALLZONES: 1058 if (IPCL_IS_BOUND(connp)) 1059 return (EINVAL); 1060 break; 1061 #ifdef SO_VRRP 1062 case SO_VRRP: 1063 if (secpolicy_ip_config(cr, checkonly) != 0) 1064 return (EACCES); 1065 break; 1066 #endif 1067 case SO_MAC_EXEMPT: 1068 if (secpolicy_net_mac_aware(cr) != 0) 1069 return (EACCES); 1070 if (IPCL_IS_BOUND(connp)) 1071 return (EINVAL); 1072 break; 1073 case SO_MAC_IMPLICIT: 1074 if (secpolicy_net_mac_implicit(cr) != 0) 1075 return (EACCES); 1076 break; 1077 } 1078 if (checkonly) 1079 return (0); 1080 1081 mutex_enter(&connp->conn_lock); 1082 /* Here we set the actual option value */ 1083 switch (name) { 1084 case SO_DEBUG: 1085 connp->conn_debug = onoff; 1086 break; 1087 case SO_KEEPALIVE: 1088 connp->conn_keepalive = onoff; 1089 break; 1090 case SO_LINGER: { 1091 struct linger *lgr = (struct linger *)invalp; 1092 1093 if (lgr->l_onoff) { 1094 connp->conn_linger = 1; 1095 connp->conn_lingertime = lgr->l_linger; 1096 } else { 1097 connp->conn_linger = 0; 1098 connp->conn_lingertime = 0; 1099 } 1100 break; 1101 } 1102 case SO_OOBINLINE: 1103 connp->conn_oobinline = onoff; 1104 coa->coa_changed |= COA_OOBINLINE_CHANGED; 1105 break; 1106 case SO_REUSEADDR: 1107 connp->conn_reuseaddr = onoff; 1108 break; 1109 case SO_DONTROUTE: 1110 if (onoff) 1111 ixa->ixa_flags |= IXAF_DONTROUTE; 1112 else 1113 ixa->ixa_flags &= ~IXAF_DONTROUTE; 1114 coa->coa_changed |= COA_ROUTE_CHANGED; 1115 break; 1116 case SO_USELOOPBACK: 1117 connp->conn_useloopback = onoff; 1118 break; 1119 case SO_BROADCAST: 1120 connp->conn_broadcast = onoff; 1121 break; 1122 case SO_SNDBUF: 1123 /* ULP has range checked the value */ 1124 connp->conn_sndbuf = *i1; 1125 coa->coa_changed |= COA_SNDBUF_CHANGED; 1126 break; 1127 case SO_RCVBUF: 1128 /* ULP has range checked the value */ 1129 connp->conn_rcvbuf = *i1; 1130 coa->coa_changed |= COA_RCVBUF_CHANGED; 1131 break; 1132 case SO_RCVTIMEO: 1133 case SO_SNDTIMEO: 1134 /* 1135 * Pass these two options in order for third part 1136 * protocol usage. 1137 */ 1138 break; 1139 case SO_DGRAM_ERRIND: 1140 connp->conn_dgram_errind = onoff; 1141 break; 1142 case SO_RECVUCRED: 1143 connp->conn_recv_ancillary.crb_recvucred = onoff; 1144 break; 1145 case SO_ALLZONES: 1146 connp->conn_allzones = onoff; 1147 coa->coa_changed |= COA_ROUTE_CHANGED; 1148 if (onoff) 1149 ixa->ixa_zoneid = ALL_ZONES; 1150 else 1151 ixa->ixa_zoneid = connp->conn_zoneid; 1152 break; 1153 case SO_TIMESTAMP: 1154 connp->conn_recv_ancillary.crb_timestamp = onoff; 1155 break; 1156 #ifdef SO_VRRP 1157 case SO_VRRP: 1158 connp->conn_isvrrp = onoff; 1159 break; 1160 #endif 1161 case SO_ANON_MLP: 1162 connp->conn_anon_mlp = onoff; 1163 break; 1164 case SO_MAC_EXEMPT: 1165 connp->conn_mac_mode = onoff ? 1166 CONN_MAC_AWARE : CONN_MAC_DEFAULT; 1167 break; 1168 case SO_MAC_IMPLICIT: 1169 connp->conn_mac_mode = onoff ? 1170 CONN_MAC_IMPLICIT : CONN_MAC_DEFAULT; 1171 break; 1172 case SO_EXCLBIND: 1173 connp->conn_exclbind = onoff; 1174 break; 1175 } 1176 mutex_exit(&connp->conn_lock); 1177 return (0); 1178 } 1179 1180 /* Handle IPPROTO_IP */ 1181 static int 1182 conn_opt_set_ip(conn_opt_arg_t *coa, t_scalar_t name, uint_t inlen, 1183 uchar_t *invalp, boolean_t checkonly, cred_t *cr) 1184 { 1185 conn_t *connp = coa->coa_connp; 1186 ip_xmit_attr_t *ixa = coa->coa_ixa; 1187 ip_pkt_t *ipp = coa->coa_ipp; 1188 int *i1 = (int *)invalp; 1189 boolean_t onoff = (*i1 == 0) ? 0 : 1; 1190 ipaddr_t addr = (ipaddr_t)*i1; 1191 uint_t ifindex; 1192 zoneid_t zoneid = IPCL_ZONEID(connp); 1193 ipif_t *ipif; 1194 ip_stack_t *ipst = connp->conn_netstack->netstack_ip; 1195 int error; 1196 1197 if (connp->conn_family != AF_INET) 1198 return (EINVAL); 1199 1200 switch (name) { 1201 case IP_TTL: 1202 /* Don't allow zero */ 1203 if (*i1 < 1 || *i1 > 255) 1204 return (EINVAL); 1205 break; 1206 case IP_MULTICAST_IF: 1207 if (addr == INADDR_ANY) { 1208 /* Clear */ 1209 ifindex = 0; 1210 break; 1211 } 1212 ipif = ipif_lookup_addr(addr, NULL, zoneid, ipst); 1213 if (ipif == NULL) 1214 return (EHOSTUNREACH); 1215 /* not supported by the virtual network iface */ 1216 if (IS_VNI(ipif->ipif_ill)) { 1217 ipif_refrele(ipif); 1218 return (EINVAL); 1219 } 1220 ifindex = ipif->ipif_ill->ill_phyint->phyint_ifindex; 1221 ipif_refrele(ipif); 1222 break; 1223 case IP_NEXTHOP: { 1224 ire_t *ire; 1225 1226 if (addr == INADDR_ANY) { 1227 /* Clear */ 1228 break; 1229 } 1230 /* Verify that the next-hop is on-link */ 1231 ire = ire_ftable_lookup_v4(addr, 0, 0, IRE_ONLINK, NULL, zoneid, 1232 NULL, MATCH_IRE_TYPE, 0, ipst, NULL); 1233 if (ire == NULL) 1234 return (EHOSTUNREACH); 1235 ire_refrele(ire); 1236 break; 1237 } 1238 case IP_OPTIONS: 1239 case T_IP_OPTIONS: { 1240 uint_t newlen; 1241 1242 if (ipp->ipp_fields & IPPF_LABEL_V4) 1243 newlen = inlen + (ipp->ipp_label_len_v4 + 3) & ~3; 1244 else 1245 newlen = inlen; 1246 if ((inlen & 0x3) || newlen > IP_MAX_OPT_LENGTH) { 1247 return (EINVAL); 1248 } 1249 break; 1250 } 1251 case IP_PKTINFO: { 1252 struct in_pktinfo *pktinfo; 1253 1254 /* Two different valid lengths */ 1255 if (inlen != sizeof (int) && 1256 inlen != sizeof (struct in_pktinfo)) 1257 return (EINVAL); 1258 if (inlen == sizeof (int)) 1259 break; 1260 1261 pktinfo = (struct in_pktinfo *)invalp; 1262 if (pktinfo->ipi_spec_dst.s_addr != INADDR_ANY) { 1263 switch (ip_laddr_verify_v4(pktinfo->ipi_spec_dst.s_addr, 1264 zoneid, ipst, B_FALSE)) { 1265 case IPVL_UNICAST_UP: 1266 case IPVL_UNICAST_DOWN: 1267 break; 1268 default: 1269 return (EADDRNOTAVAIL); 1270 } 1271 } 1272 if (!ip_ifindex_valid(pktinfo->ipi_ifindex, B_FALSE, ipst)) 1273 return (ENXIO); 1274 break; 1275 } 1276 case IP_BOUND_IF: 1277 ifindex = *(uint_t *)i1; 1278 1279 /* Just check it is ok. */ 1280 if (!ip_ifindex_valid(ifindex, B_FALSE, ipst)) 1281 return (ENXIO); 1282 break; 1283 } 1284 if (checkonly) 1285 return (0); 1286 1287 /* Here we set the actual option value */ 1288 /* 1289 * conn_lock protects the bitfields, and is used to 1290 * set the fields atomically. Not needed for ixa settings since 1291 * the caller has an exclusive copy of the ixa. 1292 * We can not hold conn_lock across the multicast options though. 1293 */ 1294 switch (name) { 1295 case IP_OPTIONS: 1296 case T_IP_OPTIONS: 1297 /* Save options for use by IP. */ 1298 mutex_enter(&connp->conn_lock); 1299 error = optcom_pkt_set(invalp, inlen, 1300 (uchar_t **)&ipp->ipp_ipv4_options, 1301 &ipp->ipp_ipv4_options_len); 1302 if (error != 0) { 1303 mutex_exit(&connp->conn_lock); 1304 return (error); 1305 } 1306 if (ipp->ipp_ipv4_options_len == 0) { 1307 ipp->ipp_fields &= ~IPPF_IPV4_OPTIONS; 1308 } else { 1309 ipp->ipp_fields |= IPPF_IPV4_OPTIONS; 1310 } 1311 mutex_exit(&connp->conn_lock); 1312 coa->coa_changed |= COA_HEADER_CHANGED; 1313 coa->coa_changed |= COA_WROFF_CHANGED; 1314 break; 1315 1316 case IP_TTL: 1317 mutex_enter(&connp->conn_lock); 1318 ipp->ipp_unicast_hops = *i1; 1319 mutex_exit(&connp->conn_lock); 1320 coa->coa_changed |= COA_HEADER_CHANGED; 1321 break; 1322 case IP_TOS: 1323 case T_IP_TOS: 1324 mutex_enter(&connp->conn_lock); 1325 if (*i1 == -1) { 1326 ipp->ipp_type_of_service = 0; 1327 } else { 1328 ipp->ipp_type_of_service = *i1; 1329 } 1330 mutex_exit(&connp->conn_lock); 1331 coa->coa_changed |= COA_HEADER_CHANGED; 1332 break; 1333 case IP_MULTICAST_IF: 1334 ixa->ixa_multicast_ifindex = ifindex; 1335 ixa->ixa_multicast_ifaddr = addr; 1336 coa->coa_changed |= COA_ROUTE_CHANGED; 1337 break; 1338 case IP_MULTICAST_TTL: 1339 ixa->ixa_multicast_ttl = *invalp; 1340 /* Handled automatically by ip_output */ 1341 break; 1342 case IP_MULTICAST_LOOP: 1343 if (*invalp != 0) 1344 ixa->ixa_flags |= IXAF_MULTICAST_LOOP; 1345 else 1346 ixa->ixa_flags &= ~IXAF_MULTICAST_LOOP; 1347 /* Handled automatically by ip_output */ 1348 break; 1349 case IP_RECVOPTS: 1350 mutex_enter(&connp->conn_lock); 1351 connp->conn_recv_ancillary.crb_recvopts = onoff; 1352 mutex_exit(&connp->conn_lock); 1353 break; 1354 case IP_RECVDSTADDR: 1355 mutex_enter(&connp->conn_lock); 1356 connp->conn_recv_ancillary.crb_recvdstaddr = onoff; 1357 mutex_exit(&connp->conn_lock); 1358 break; 1359 case IP_RECVIF: 1360 mutex_enter(&connp->conn_lock); 1361 connp->conn_recv_ancillary.crb_recvif = onoff; 1362 mutex_exit(&connp->conn_lock); 1363 break; 1364 case IP_RECVSLLA: 1365 mutex_enter(&connp->conn_lock); 1366 connp->conn_recv_ancillary.crb_recvslla = onoff; 1367 mutex_exit(&connp->conn_lock); 1368 break; 1369 case IP_RECVTTL: 1370 mutex_enter(&connp->conn_lock); 1371 connp->conn_recv_ancillary.crb_recvttl = onoff; 1372 mutex_exit(&connp->conn_lock); 1373 break; 1374 case IP_PKTINFO: { 1375 /* 1376 * This also handles IP_RECVPKTINFO. 1377 * IP_PKTINFO and IP_RECVPKTINFO have same value. 1378 * Differentiation is based on the size of the 1379 * argument passed in. 1380 */ 1381 struct in_pktinfo *pktinfo; 1382 1383 if (inlen == sizeof (int)) { 1384 /* This is IP_RECVPKTINFO option. */ 1385 mutex_enter(&connp->conn_lock); 1386 connp->conn_recv_ancillary.crb_ip_recvpktinfo = 1387 onoff; 1388 mutex_exit(&connp->conn_lock); 1389 break; 1390 } 1391 1392 /* This is IP_PKTINFO option. */ 1393 mutex_enter(&connp->conn_lock); 1394 pktinfo = (struct in_pktinfo *)invalp; 1395 if (ipp->ipp_addr_v4 != INADDR_ANY) { 1396 ipp->ipp_fields |= IPPF_ADDR; 1397 IN6_INADDR_TO_V4MAPPED(&pktinfo->ipi_spec_dst, 1398 &ipp->ipp_addr); 1399 } else { 1400 ipp->ipp_fields &= ~IPPF_ADDR; 1401 ipp->ipp_addr = ipv6_all_zeros; 1402 } 1403 mutex_exit(&connp->conn_lock); 1404 ixa->ixa_ifindex = pktinfo->ipi_ifindex; 1405 coa->coa_changed |= COA_ROUTE_CHANGED; 1406 coa->coa_changed |= COA_HEADER_CHANGED; 1407 break; 1408 } 1409 case IP_DONTFRAG: 1410 if (onoff) { 1411 ixa->ixa_flags |= (IXAF_DONTFRAG | IXAF_PMTU_IPV4_DF); 1412 ixa->ixa_flags &= ~IXAF_PMTU_DISCOVERY; 1413 } else { 1414 ixa->ixa_flags &= ~(IXAF_DONTFRAG | IXAF_PMTU_IPV4_DF); 1415 ixa->ixa_flags |= IXAF_PMTU_DISCOVERY; 1416 } 1417 /* Need to redo ip_attr_connect */ 1418 coa->coa_changed |= COA_ROUTE_CHANGED; 1419 break; 1420 case IP_ADD_MEMBERSHIP: 1421 case IP_DROP_MEMBERSHIP: 1422 case MCAST_JOIN_GROUP: 1423 case MCAST_LEAVE_GROUP: 1424 return (ip_opt_set_multicast_group(connp, name, 1425 invalp, B_FALSE, checkonly)); 1426 1427 case IP_BLOCK_SOURCE: 1428 case IP_UNBLOCK_SOURCE: 1429 case IP_ADD_SOURCE_MEMBERSHIP: 1430 case IP_DROP_SOURCE_MEMBERSHIP: 1431 case MCAST_BLOCK_SOURCE: 1432 case MCAST_UNBLOCK_SOURCE: 1433 case MCAST_JOIN_SOURCE_GROUP: 1434 case MCAST_LEAVE_SOURCE_GROUP: 1435 return (ip_opt_set_multicast_sources(connp, name, 1436 invalp, B_FALSE, checkonly)); 1437 1438 case IP_SEC_OPT: 1439 mutex_enter(&connp->conn_lock); 1440 error = ipsec_set_req(cr, connp, (ipsec_req_t *)invalp); 1441 mutex_exit(&connp->conn_lock); 1442 if (error != 0) { 1443 return (error); 1444 } 1445 /* This is an IPsec policy change - redo ip_attr_connect */ 1446 coa->coa_changed |= COA_ROUTE_CHANGED; 1447 break; 1448 case IP_NEXTHOP: 1449 ixa->ixa_nexthop_v4 = addr; 1450 if (addr != INADDR_ANY) 1451 ixa->ixa_flags |= IXAF_NEXTHOP_SET; 1452 else 1453 ixa->ixa_flags &= ~IXAF_NEXTHOP_SET; 1454 coa->coa_changed |= COA_ROUTE_CHANGED; 1455 break; 1456 1457 case IP_BOUND_IF: 1458 ixa->ixa_ifindex = ifindex; /* Send */ 1459 mutex_enter(&connp->conn_lock); 1460 connp->conn_incoming_ifindex = ifindex; /* Receive */ 1461 connp->conn_bound_if = ifindex; /* getsockopt */ 1462 mutex_exit(&connp->conn_lock); 1463 coa->coa_changed |= COA_ROUTE_CHANGED; 1464 break; 1465 case IP_UNSPEC_SRC: 1466 mutex_enter(&connp->conn_lock); 1467 connp->conn_unspec_src = onoff; 1468 if (onoff) 1469 ixa->ixa_flags &= ~IXAF_VERIFY_SOURCE; 1470 else 1471 ixa->ixa_flags |= IXAF_VERIFY_SOURCE; 1472 1473 mutex_exit(&connp->conn_lock); 1474 break; 1475 case IP_BROADCAST_TTL: 1476 ixa->ixa_broadcast_ttl = *invalp; 1477 ixa->ixa_flags |= IXAF_BROADCAST_TTL_SET; 1478 /* Handled automatically by ip_output */ 1479 break; 1480 case MRT_INIT: 1481 case MRT_DONE: 1482 case MRT_ADD_VIF: 1483 case MRT_DEL_VIF: 1484 case MRT_ADD_MFC: 1485 case MRT_DEL_MFC: 1486 case MRT_ASSERT: 1487 if ((error = secpolicy_ip_config(cr, B_FALSE)) != 0) { 1488 return (error); 1489 } 1490 error = ip_mrouter_set((int)name, connp, checkonly, 1491 (uchar_t *)invalp, inlen); 1492 if (error) { 1493 return (error); 1494 } 1495 return (0); 1496 1497 } 1498 return (0); 1499 } 1500 1501 /* Handle IPPROTO_IPV6 */ 1502 static int 1503 conn_opt_set_ipv6(conn_opt_arg_t *coa, t_scalar_t name, uint_t inlen, 1504 uchar_t *invalp, boolean_t checkonly, cred_t *cr) 1505 { 1506 conn_t *connp = coa->coa_connp; 1507 ip_xmit_attr_t *ixa = coa->coa_ixa; 1508 ip_pkt_t *ipp = coa->coa_ipp; 1509 int *i1 = (int *)invalp; 1510 boolean_t onoff = (*i1 == 0) ? 0 : 1; 1511 uint_t ifindex; 1512 zoneid_t zoneid = IPCL_ZONEID(connp); 1513 ip_stack_t *ipst = connp->conn_netstack->netstack_ip; 1514 int error; 1515 1516 if (connp->conn_family != AF_INET6) 1517 return (EINVAL); 1518 1519 switch (name) { 1520 case IPV6_MULTICAST_IF: 1521 /* 1522 * The only possible error is EINVAL. 1523 * We call this option on both V4 and V6 1524 * If both fail, then this call returns 1525 * EINVAL. If at least one of them succeeds we 1526 * return success. 1527 */ 1528 ifindex = *(uint_t *)i1; 1529 1530 if (!ip_ifindex_valid(ifindex, B_TRUE, ipst) && 1531 !ip_ifindex_valid(ifindex, B_FALSE, ipst)) 1532 return (EINVAL); 1533 break; 1534 case IPV6_UNICAST_HOPS: 1535 /* Don't allow zero. -1 means to use default */ 1536 if (*i1 < -1 || *i1 == 0 || *i1 > IPV6_MAX_HOPS) 1537 return (EINVAL); 1538 break; 1539 case IPV6_MULTICAST_HOPS: 1540 /* -1 means use default */ 1541 if (*i1 < -1 || *i1 > IPV6_MAX_HOPS) 1542 return (EINVAL); 1543 break; 1544 case IPV6_MULTICAST_LOOP: 1545 if (*i1 != 0 && *i1 != 1) 1546 return (EINVAL); 1547 break; 1548 case IPV6_BOUND_IF: 1549 ifindex = *(uint_t *)i1; 1550 1551 if (!ip_ifindex_valid(ifindex, B_TRUE, ipst)) 1552 return (ENXIO); 1553 break; 1554 case IPV6_PKTINFO: { 1555 struct in6_pktinfo *pkti; 1556 boolean_t isv6; 1557 1558 if (inlen != 0 && inlen != sizeof (struct in6_pktinfo)) 1559 return (EINVAL); 1560 if (inlen == 0) 1561 break; /* Clear values below */ 1562 1563 /* 1564 * Verify the source address and ifindex. Privileged users 1565 * can use any source address. 1566 */ 1567 pkti = (struct in6_pktinfo *)invalp; 1568 1569 /* 1570 * For link-local addresses we use the ipi6_ifindex when 1571 * we verify the local address. 1572 * If net_rawaccess then any source address can be used. 1573 */ 1574 if (!IN6_IS_ADDR_UNSPECIFIED(&pkti->ipi6_addr) && 1575 secpolicy_net_rawaccess(cr) != 0) { 1576 uint_t scopeid = 0; 1577 in6_addr_t *v6src = &pkti->ipi6_addr; 1578 ipaddr_t v4src; 1579 ip_laddr_t laddr_type = IPVL_UNICAST_UP; 1580 1581 if (IN6_IS_ADDR_V4MAPPED(v6src)) { 1582 IN6_V4MAPPED_TO_IPADDR(v6src, v4src); 1583 if (v4src != INADDR_ANY) { 1584 laddr_type = ip_laddr_verify_v4(v4src, 1585 zoneid, ipst, B_FALSE); 1586 } 1587 } else { 1588 if (IN6_IS_ADDR_LINKSCOPE(v6src)) 1589 scopeid = pkti->ipi6_ifindex; 1590 1591 laddr_type = ip_laddr_verify_v6(v6src, zoneid, 1592 ipst, B_FALSE, scopeid); 1593 } 1594 switch (laddr_type) { 1595 case IPVL_UNICAST_UP: 1596 case IPVL_UNICAST_DOWN: 1597 break; 1598 default: 1599 return (EADDRNOTAVAIL); 1600 } 1601 ixa->ixa_flags |= IXAF_VERIFY_SOURCE; 1602 } else if (!IN6_IS_ADDR_UNSPECIFIED(&pkti->ipi6_addr)) { 1603 /* Allow any source */ 1604 ixa->ixa_flags &= ~IXAF_VERIFY_SOURCE; 1605 } 1606 isv6 = !(IN6_IS_ADDR_V4MAPPED(&pkti->ipi6_addr)); 1607 if (!ip_ifindex_valid(pkti->ipi6_ifindex, isv6, ipst)) 1608 return (ENXIO); 1609 break; 1610 } 1611 case IPV6_HOPLIMIT: 1612 /* It is only allowed as ancilary data */ 1613 if (!coa->coa_ancillary) 1614 return (EINVAL); 1615 1616 if (inlen != 0 && inlen != sizeof (int)) 1617 return (EINVAL); 1618 if (inlen == sizeof (int)) { 1619 if (*i1 > 255 || *i1 < -1 || *i1 == 0) 1620 return (EINVAL); 1621 } 1622 break; 1623 case IPV6_TCLASS: 1624 if (inlen != 0 && inlen != sizeof (int)) 1625 return (EINVAL); 1626 if (inlen == sizeof (int)) { 1627 if (*i1 > 255 || *i1 < -1) 1628 return (EINVAL); 1629 } 1630 break; 1631 case IPV6_NEXTHOP: 1632 if (inlen != 0 && inlen != sizeof (sin6_t)) 1633 return (EINVAL); 1634 if (inlen == sizeof (sin6_t)) { 1635 sin6_t *sin6 = (sin6_t *)invalp; 1636 ire_t *ire; 1637 1638 if (sin6->sin6_family != AF_INET6) 1639 return (EAFNOSUPPORT); 1640 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) 1641 return (EADDRNOTAVAIL); 1642 1643 /* Verify that the next-hop is on-link */ 1644 ire = ire_ftable_lookup_v6(&sin6->sin6_addr, 1645 0, 0, IRE_ONLINK, NULL, zoneid, 1646 NULL, MATCH_IRE_TYPE, 0, ipst, NULL); 1647 if (ire == NULL) 1648 return (EHOSTUNREACH); 1649 ire_refrele(ire); 1650 break; 1651 } 1652 break; 1653 case IPV6_RTHDR: 1654 case IPV6_DSTOPTS: 1655 case IPV6_RTHDRDSTOPTS: 1656 case IPV6_HOPOPTS: { 1657 /* All have the length field in the same place */ 1658 ip6_hbh_t *hopts = (ip6_hbh_t *)invalp; 1659 /* 1660 * Sanity checks - minimum size, size a multiple of 1661 * eight bytes, and matching size passed in. 1662 */ 1663 if (inlen != 0 && 1664 inlen != (8 * (hopts->ip6h_len + 1))) 1665 return (EINVAL); 1666 break; 1667 } 1668 case IPV6_PATHMTU: 1669 /* Can't be set */ 1670 return (EINVAL); 1671 1672 case IPV6_USE_MIN_MTU: 1673 if (inlen != sizeof (int)) 1674 return (EINVAL); 1675 if (*i1 < -1 || *i1 > 1) 1676 return (EINVAL); 1677 break; 1678 case IPV6_SRC_PREFERENCES: 1679 if (inlen != sizeof (uint32_t)) 1680 return (EINVAL); 1681 break; 1682 case IPV6_V6ONLY: 1683 if (*i1 < 0 || *i1 > 1) { 1684 return (EINVAL); 1685 } 1686 break; 1687 } 1688 if (checkonly) 1689 return (0); 1690 1691 /* Here we set the actual option value */ 1692 /* 1693 * conn_lock protects the bitfields, and is used to 1694 * set the fields atomically. Not needed for ixa settings since 1695 * the caller has an exclusive copy of the ixa. 1696 * We can not hold conn_lock across the multicast options though. 1697 */ 1698 ASSERT(MUTEX_NOT_HELD(&coa->coa_connp->conn_lock)); 1699 switch (name) { 1700 case IPV6_MULTICAST_IF: 1701 ixa->ixa_multicast_ifindex = ifindex; 1702 /* Need to redo ip_attr_connect */ 1703 coa->coa_changed |= COA_ROUTE_CHANGED; 1704 break; 1705 case IPV6_UNICAST_HOPS: 1706 /* -1 means use default */ 1707 mutex_enter(&connp->conn_lock); 1708 if (*i1 == -1) { 1709 ipp->ipp_unicast_hops = connp->conn_default_ttl; 1710 } else { 1711 ipp->ipp_unicast_hops = (uint8_t)*i1; 1712 } 1713 mutex_exit(&connp->conn_lock); 1714 coa->coa_changed |= COA_HEADER_CHANGED; 1715 break; 1716 case IPV6_MULTICAST_HOPS: 1717 /* -1 means use default */ 1718 if (*i1 == -1) { 1719 ixa->ixa_multicast_ttl = IP_DEFAULT_MULTICAST_TTL; 1720 } else { 1721 ixa->ixa_multicast_ttl = (uint8_t)*i1; 1722 } 1723 /* Handled automatically by ip_output */ 1724 break; 1725 case IPV6_MULTICAST_LOOP: 1726 if (*i1 != 0) 1727 ixa->ixa_flags |= IXAF_MULTICAST_LOOP; 1728 else 1729 ixa->ixa_flags &= ~IXAF_MULTICAST_LOOP; 1730 /* Handled automatically by ip_output */ 1731 break; 1732 case IPV6_JOIN_GROUP: 1733 case IPV6_LEAVE_GROUP: 1734 case MCAST_JOIN_GROUP: 1735 case MCAST_LEAVE_GROUP: 1736 return (ip_opt_set_multicast_group(connp, name, 1737 invalp, B_TRUE, checkonly)); 1738 1739 case MCAST_BLOCK_SOURCE: 1740 case MCAST_UNBLOCK_SOURCE: 1741 case MCAST_JOIN_SOURCE_GROUP: 1742 case MCAST_LEAVE_SOURCE_GROUP: 1743 return (ip_opt_set_multicast_sources(connp, name, 1744 invalp, B_TRUE, checkonly)); 1745 1746 case IPV6_BOUND_IF: 1747 ixa->ixa_ifindex = ifindex; /* Send */ 1748 mutex_enter(&connp->conn_lock); 1749 connp->conn_incoming_ifindex = ifindex; /* Receive */ 1750 connp->conn_bound_if = ifindex; /* getsockopt */ 1751 mutex_exit(&connp->conn_lock); 1752 coa->coa_changed |= COA_ROUTE_CHANGED; 1753 break; 1754 case IPV6_UNSPEC_SRC: 1755 mutex_enter(&connp->conn_lock); 1756 connp->conn_unspec_src = onoff; 1757 if (onoff) 1758 ixa->ixa_flags &= ~IXAF_VERIFY_SOURCE; 1759 else 1760 ixa->ixa_flags |= IXAF_VERIFY_SOURCE; 1761 mutex_exit(&connp->conn_lock); 1762 break; 1763 case IPV6_RECVPKTINFO: 1764 mutex_enter(&connp->conn_lock); 1765 connp->conn_recv_ancillary.crb_ip_recvpktinfo = onoff; 1766 mutex_exit(&connp->conn_lock); 1767 break; 1768 case IPV6_RECVTCLASS: 1769 mutex_enter(&connp->conn_lock); 1770 connp->conn_recv_ancillary.crb_ipv6_recvtclass = onoff; 1771 mutex_exit(&connp->conn_lock); 1772 break; 1773 case IPV6_RECVPATHMTU: 1774 mutex_enter(&connp->conn_lock); 1775 connp->conn_ipv6_recvpathmtu = onoff; 1776 mutex_exit(&connp->conn_lock); 1777 break; 1778 case IPV6_RECVHOPLIMIT: 1779 mutex_enter(&connp->conn_lock); 1780 connp->conn_recv_ancillary.crb_ipv6_recvhoplimit = 1781 onoff; 1782 mutex_exit(&connp->conn_lock); 1783 break; 1784 case IPV6_RECVHOPOPTS: 1785 mutex_enter(&connp->conn_lock); 1786 connp->conn_recv_ancillary.crb_ipv6_recvhopopts = onoff; 1787 mutex_exit(&connp->conn_lock); 1788 break; 1789 case IPV6_RECVDSTOPTS: 1790 mutex_enter(&connp->conn_lock); 1791 connp->conn_recv_ancillary.crb_ipv6_recvdstopts = onoff; 1792 mutex_exit(&connp->conn_lock); 1793 break; 1794 case _OLD_IPV6_RECVDSTOPTS: 1795 mutex_enter(&connp->conn_lock); 1796 connp->conn_recv_ancillary.crb_old_ipv6_recvdstopts = 1797 onoff; 1798 mutex_exit(&connp->conn_lock); 1799 break; 1800 case IPV6_RECVRTHDRDSTOPTS: 1801 mutex_enter(&connp->conn_lock); 1802 connp->conn_recv_ancillary.crb_ipv6_recvrthdrdstopts = 1803 onoff; 1804 mutex_exit(&connp->conn_lock); 1805 break; 1806 case IPV6_RECVRTHDR: 1807 mutex_enter(&connp->conn_lock); 1808 connp->conn_recv_ancillary.crb_ipv6_recvrthdr = onoff; 1809 mutex_exit(&connp->conn_lock); 1810 break; 1811 case IPV6_PKTINFO: 1812 mutex_enter(&connp->conn_lock); 1813 if (inlen == 0) { 1814 ipp->ipp_fields &= ~IPPF_ADDR; 1815 ipp->ipp_addr = ipv6_all_zeros; 1816 ixa->ixa_ifindex = 0; 1817 } else { 1818 struct in6_pktinfo *pkti; 1819 1820 pkti = (struct in6_pktinfo *)invalp; 1821 ipp->ipp_addr = pkti->ipi6_addr; 1822 if (!IN6_IS_ADDR_UNSPECIFIED(&ipp->ipp_addr)) 1823 ipp->ipp_fields |= IPPF_ADDR; 1824 else 1825 ipp->ipp_fields &= ~IPPF_ADDR; 1826 ixa->ixa_ifindex = pkti->ipi6_ifindex; 1827 } 1828 mutex_exit(&connp->conn_lock); 1829 /* Source and ifindex might have changed */ 1830 coa->coa_changed |= COA_HEADER_CHANGED; 1831 coa->coa_changed |= COA_ROUTE_CHANGED; 1832 break; 1833 case IPV6_HOPLIMIT: 1834 mutex_enter(&connp->conn_lock); 1835 if (inlen == 0 || *i1 == -1) { 1836 /* Revert to default */ 1837 ipp->ipp_fields &= ~IPPF_HOPLIMIT; 1838 ixa->ixa_flags &= ~IXAF_NO_TTL_CHANGE; 1839 } else { 1840 ipp->ipp_hoplimit = *i1; 1841 ipp->ipp_fields |= IPPF_HOPLIMIT; 1842 /* Ensure that it sticks for multicast packets */ 1843 ixa->ixa_flags |= IXAF_NO_TTL_CHANGE; 1844 } 1845 mutex_exit(&connp->conn_lock); 1846 coa->coa_changed |= COA_HEADER_CHANGED; 1847 break; 1848 case IPV6_TCLASS: 1849 /* 1850 * IPV6_TCLASS accepts -1 as use kernel default 1851 * and [0, 255] as the actualy traffic class. 1852 */ 1853 mutex_enter(&connp->conn_lock); 1854 if (inlen == 0 || *i1 == -1) { 1855 ipp->ipp_tclass = 0; 1856 ipp->ipp_fields &= ~IPPF_TCLASS; 1857 } else { 1858 ipp->ipp_tclass = *i1; 1859 ipp->ipp_fields |= IPPF_TCLASS; 1860 } 1861 mutex_exit(&connp->conn_lock); 1862 coa->coa_changed |= COA_HEADER_CHANGED; 1863 break; 1864 case IPV6_NEXTHOP: 1865 if (inlen == 0) { 1866 ixa->ixa_flags &= ~IXAF_NEXTHOP_SET; 1867 } else { 1868 sin6_t *sin6 = (sin6_t *)invalp; 1869 1870 ixa->ixa_nexthop_v6 = sin6->sin6_addr; 1871 if (!IN6_IS_ADDR_UNSPECIFIED(&ixa->ixa_nexthop_v6)) 1872 ixa->ixa_flags |= IXAF_NEXTHOP_SET; 1873 else 1874 ixa->ixa_flags &= ~IXAF_NEXTHOP_SET; 1875 } 1876 coa->coa_changed |= COA_ROUTE_CHANGED; 1877 break; 1878 case IPV6_HOPOPTS: 1879 mutex_enter(&connp->conn_lock); 1880 error = optcom_pkt_set(invalp, inlen, 1881 (uchar_t **)&ipp->ipp_hopopts, &ipp->ipp_hopoptslen); 1882 if (error != 0) { 1883 mutex_exit(&connp->conn_lock); 1884 return (error); 1885 } 1886 if (ipp->ipp_hopoptslen == 0) { 1887 ipp->ipp_fields &= ~IPPF_HOPOPTS; 1888 } else { 1889 ipp->ipp_fields |= IPPF_HOPOPTS; 1890 } 1891 mutex_exit(&connp->conn_lock); 1892 coa->coa_changed |= COA_HEADER_CHANGED; 1893 coa->coa_changed |= COA_WROFF_CHANGED; 1894 break; 1895 case IPV6_RTHDRDSTOPTS: 1896 mutex_enter(&connp->conn_lock); 1897 error = optcom_pkt_set(invalp, inlen, 1898 (uchar_t **)&ipp->ipp_rthdrdstopts, 1899 &ipp->ipp_rthdrdstoptslen); 1900 if (error != 0) { 1901 mutex_exit(&connp->conn_lock); 1902 return (error); 1903 } 1904 if (ipp->ipp_rthdrdstoptslen == 0) { 1905 ipp->ipp_fields &= ~IPPF_RTHDRDSTOPTS; 1906 } else { 1907 ipp->ipp_fields |= IPPF_RTHDRDSTOPTS; 1908 } 1909 mutex_exit(&connp->conn_lock); 1910 coa->coa_changed |= COA_HEADER_CHANGED; 1911 coa->coa_changed |= COA_WROFF_CHANGED; 1912 break; 1913 case IPV6_DSTOPTS: 1914 mutex_enter(&connp->conn_lock); 1915 error = optcom_pkt_set(invalp, inlen, 1916 (uchar_t **)&ipp->ipp_dstopts, &ipp->ipp_dstoptslen); 1917 if (error != 0) { 1918 mutex_exit(&connp->conn_lock); 1919 return (error); 1920 } 1921 if (ipp->ipp_dstoptslen == 0) { 1922 ipp->ipp_fields &= ~IPPF_DSTOPTS; 1923 } else { 1924 ipp->ipp_fields |= IPPF_DSTOPTS; 1925 } 1926 mutex_exit(&connp->conn_lock); 1927 coa->coa_changed |= COA_HEADER_CHANGED; 1928 coa->coa_changed |= COA_WROFF_CHANGED; 1929 break; 1930 case IPV6_RTHDR: 1931 mutex_enter(&connp->conn_lock); 1932 error = optcom_pkt_set(invalp, inlen, 1933 (uchar_t **)&ipp->ipp_rthdr, &ipp->ipp_rthdrlen); 1934 if (error != 0) { 1935 mutex_exit(&connp->conn_lock); 1936 return (error); 1937 } 1938 if (ipp->ipp_rthdrlen == 0) { 1939 ipp->ipp_fields &= ~IPPF_RTHDR; 1940 } else { 1941 ipp->ipp_fields |= IPPF_RTHDR; 1942 } 1943 mutex_exit(&connp->conn_lock); 1944 coa->coa_changed |= COA_HEADER_CHANGED; 1945 coa->coa_changed |= COA_WROFF_CHANGED; 1946 break; 1947 1948 case IPV6_DONTFRAG: 1949 if (onoff) { 1950 ixa->ixa_flags |= IXAF_DONTFRAG; 1951 ixa->ixa_flags &= ~IXAF_PMTU_DISCOVERY; 1952 } else { 1953 ixa->ixa_flags &= ~IXAF_DONTFRAG; 1954 ixa->ixa_flags |= IXAF_PMTU_DISCOVERY; 1955 } 1956 /* Need to redo ip_attr_connect */ 1957 coa->coa_changed |= COA_ROUTE_CHANGED; 1958 break; 1959 1960 case IPV6_USE_MIN_MTU: 1961 ixa->ixa_flags |= IXAF_USE_MIN_MTU; 1962 ixa->ixa_use_min_mtu = *i1; 1963 /* Need to redo ip_attr_connect */ 1964 coa->coa_changed |= COA_ROUTE_CHANGED; 1965 break; 1966 1967 case IPV6_SEC_OPT: 1968 mutex_enter(&connp->conn_lock); 1969 error = ipsec_set_req(cr, connp, (ipsec_req_t *)invalp); 1970 mutex_exit(&connp->conn_lock); 1971 if (error != 0) { 1972 return (error); 1973 } 1974 /* This is an IPsec policy change - redo ip_attr_connect */ 1975 coa->coa_changed |= COA_ROUTE_CHANGED; 1976 break; 1977 case IPV6_SRC_PREFERENCES: 1978 /* 1979 * This socket option only affects connected 1980 * sockets that haven't already bound to a specific 1981 * IPv6 address. In other words, sockets that 1982 * don't call bind() with an address other than the 1983 * unspecified address and that call connect(). 1984 * ip_set_destination_v6() passes these preferences 1985 * to the ipif_select_source_v6() function. 1986 */ 1987 mutex_enter(&connp->conn_lock); 1988 error = ip6_set_src_preferences(ixa, *(uint32_t *)invalp); 1989 mutex_exit(&connp->conn_lock); 1990 if (error != 0) { 1991 return (error); 1992 } 1993 break; 1994 case IPV6_V6ONLY: 1995 mutex_enter(&connp->conn_lock); 1996 connp->conn_ipv6_v6only = onoff; 1997 mutex_exit(&connp->conn_lock); 1998 break; 1999 } 2000 return (0); 2001 } 2002 2003 /* Handle IPPROTO_UDP */ 2004 /* ARGSUSED1 */ 2005 static int 2006 conn_opt_set_udp(conn_opt_arg_t *coa, t_scalar_t name, uint_t inlen, 2007 uchar_t *invalp, boolean_t checkonly, cred_t *cr) 2008 { 2009 conn_t *connp = coa->coa_connp; 2010 int *i1 = (int *)invalp; 2011 boolean_t onoff = (*i1 == 0) ? 0 : 1; 2012 int error; 2013 2014 switch (name) { 2015 case UDP_ANONPRIVBIND: 2016 if ((error = secpolicy_net_privaddr(cr, 0, IPPROTO_UDP)) != 0) { 2017 return (error); 2018 } 2019 break; 2020 } 2021 if (checkonly) 2022 return (0); 2023 2024 /* Here we set the actual option value */ 2025 mutex_enter(&connp->conn_lock); 2026 switch (name) { 2027 case UDP_ANONPRIVBIND: 2028 connp->conn_anon_priv_bind = onoff; 2029 break; 2030 case UDP_EXCLBIND: 2031 connp->conn_exclbind = onoff; 2032 break; 2033 } 2034 mutex_exit(&connp->conn_lock); 2035 return (0); 2036 } 2037 2038 /* Handle IPPROTO_TCP */ 2039 /* ARGSUSED1 */ 2040 static int 2041 conn_opt_set_tcp(conn_opt_arg_t *coa, t_scalar_t name, uint_t inlen, 2042 uchar_t *invalp, boolean_t checkonly, cred_t *cr) 2043 { 2044 conn_t *connp = coa->coa_connp; 2045 int *i1 = (int *)invalp; 2046 boolean_t onoff = (*i1 == 0) ? 0 : 1; 2047 int error; 2048 2049 switch (name) { 2050 case TCP_ANONPRIVBIND: 2051 if ((error = secpolicy_net_privaddr(cr, 0, IPPROTO_TCP)) != 0) { 2052 return (error); 2053 } 2054 break; 2055 } 2056 if (checkonly) 2057 return (0); 2058 2059 /* Here we set the actual option value */ 2060 mutex_enter(&connp->conn_lock); 2061 switch (name) { 2062 case TCP_ANONPRIVBIND: 2063 connp->conn_anon_priv_bind = onoff; 2064 break; 2065 case TCP_EXCLBIND: 2066 connp->conn_exclbind = onoff; 2067 break; 2068 case TCP_RECVDSTADDR: 2069 connp->conn_recv_ancillary.crb_recvdstaddr = onoff; 2070 break; 2071 } 2072 mutex_exit(&connp->conn_lock); 2073 return (0); 2074 } 2075 2076 int 2077 conn_getsockname(conn_t *connp, struct sockaddr *sa, uint_t *salenp) 2078 { 2079 sin_t *sin; 2080 sin6_t *sin6; 2081 2082 if (connp->conn_family == AF_INET) { 2083 if (*salenp < sizeof (sin_t)) 2084 return (EINVAL); 2085 2086 *salenp = sizeof (sin_t); 2087 /* Fill zeroes and then initialize non-zero fields */ 2088 sin = (sin_t *)sa; 2089 *sin = sin_null; 2090 sin->sin_family = AF_INET; 2091 if (!IN6_IS_ADDR_V4MAPPED_ANY(&connp->conn_saddr_v6) && 2092 !IN6_IS_ADDR_UNSPECIFIED(&connp->conn_saddr_v6)) { 2093 sin->sin_addr.s_addr = connp->conn_saddr_v4; 2094 } else { 2095 /* 2096 * INADDR_ANY 2097 * conn_saddr is not set, we might be bound to 2098 * broadcast/multicast. Use conn_bound_addr as 2099 * local address instead (that could 2100 * also still be INADDR_ANY) 2101 */ 2102 sin->sin_addr.s_addr = connp->conn_bound_addr_v4; 2103 } 2104 sin->sin_port = connp->conn_lport; 2105 } else { 2106 if (*salenp < sizeof (sin6_t)) 2107 return (EINVAL); 2108 2109 *salenp = sizeof (sin6_t); 2110 /* Fill zeroes and then initialize non-zero fields */ 2111 sin6 = (sin6_t *)sa; 2112 *sin6 = sin6_null; 2113 sin6->sin6_family = AF_INET6; 2114 if (!IN6_IS_ADDR_UNSPECIFIED(&connp->conn_saddr_v6)) { 2115 sin6->sin6_addr = connp->conn_saddr_v6; 2116 } else { 2117 /* 2118 * conn_saddr is not set, we might be bound to 2119 * broadcast/multicast. Use conn_bound_addr as 2120 * local address instead (which could 2121 * also still be unspecified) 2122 */ 2123 sin6->sin6_addr = connp->conn_bound_addr_v6; 2124 } 2125 sin6->sin6_port = connp->conn_lport; 2126 if (IN6_IS_ADDR_LINKSCOPE(&sin6->sin6_addr) && 2127 (connp->conn_ixa->ixa_flags & IXAF_SCOPEID_SET)) 2128 sin6->sin6_scope_id = connp->conn_ixa->ixa_scopeid; 2129 } 2130 return (0); 2131 } 2132 2133 int 2134 conn_getpeername(conn_t *connp, struct sockaddr *sa, uint_t *salenp) 2135 { 2136 struct sockaddr_in *sin; 2137 struct sockaddr_in6 *sin6; 2138 2139 if (connp->conn_family == AF_INET) { 2140 if (*salenp < sizeof (sin_t)) 2141 return (EINVAL); 2142 2143 *salenp = sizeof (sin_t); 2144 /* initialize */ 2145 sin = (sin_t *)sa; 2146 *sin = sin_null; 2147 sin->sin_family = AF_INET; 2148 sin->sin_addr.s_addr = connp->conn_faddr_v4; 2149 sin->sin_port = connp->conn_fport; 2150 } else { 2151 if (*salenp < sizeof (sin6_t)) 2152 return (EINVAL); 2153 2154 *salenp = sizeof (sin6_t); 2155 /* initialize */ 2156 sin6 = (sin6_t *)sa; 2157 *sin6 = sin6_null; 2158 sin6->sin6_family = AF_INET6; 2159 sin6->sin6_addr = connp->conn_faddr_v6; 2160 sin6->sin6_port = connp->conn_fport; 2161 sin6->sin6_flowinfo = connp->conn_flowinfo; 2162 if (IN6_IS_ADDR_LINKSCOPE(&sin6->sin6_addr) && 2163 (connp->conn_ixa->ixa_flags & IXAF_SCOPEID_SET)) 2164 sin6->sin6_scope_id = connp->conn_ixa->ixa_scopeid; 2165 } 2166 return (0); 2167 } 2168 2169 static uint32_t cksum_massage_options_v4(ipha_t *, netstack_t *); 2170 static uint32_t cksum_massage_options_v6(ip6_t *, uint_t, netstack_t *); 2171 2172 /* 2173 * Allocate and fill in conn_ht_iphc based on the current information 2174 * in the conn. 2175 * Normally used when we bind() and connect(). 2176 * Returns failure if can't allocate memory, or if there is a problem 2177 * with a routing header/option. 2178 * 2179 * We allocate space for the transport header (ulp_hdr_len + extra) and 2180 * indicate the offset of the ulp header by setting ixa_ip_hdr_length. 2181 * The extra is there for transports that want some spare room for future 2182 * options. conn_ht_iphc_allocated is what was allocated; conn_ht_iphc_len 2183 * excludes the extra part. 2184 * 2185 * We massage an routing option/header and store the ckecksum difference 2186 * in conn_sum. 2187 * 2188 * Caller needs to update conn_wroff if desired. 2189 */ 2190 int 2191 conn_build_hdr_template(conn_t *connp, uint_t ulp_hdr_length, uint_t extra, 2192 const in6_addr_t *v6src, const in6_addr_t *v6dst, uint32_t flowinfo) 2193 { 2194 ip_xmit_attr_t *ixa = connp->conn_ixa; 2195 ip_pkt_t *ipp = &connp->conn_xmit_ipp; 2196 uint_t ip_hdr_length; 2197 uchar_t *hdrs; 2198 uint_t hdrs_len; 2199 2200 ASSERT(MUTEX_HELD(&connp->conn_lock)); 2201 2202 if (ixa->ixa_flags & IXAF_IS_IPV4) { 2203 ip_hdr_length = ip_total_hdrs_len_v4(ipp); 2204 /* In case of TX label and IP options it can be too much */ 2205 if (ip_hdr_length > IP_MAX_HDR_LENGTH) { 2206 /* Preserves existing TX errno for this */ 2207 return (EHOSTUNREACH); 2208 } 2209 } else { 2210 ip_hdr_length = ip_total_hdrs_len_v6(ipp); 2211 } 2212 ixa->ixa_ip_hdr_length = ip_hdr_length; 2213 hdrs_len = ip_hdr_length + ulp_hdr_length + extra; 2214 ASSERT(hdrs_len != 0); 2215 2216 if (hdrs_len != connp->conn_ht_iphc_allocated) { 2217 /* Allocate new before we free any old */ 2218 hdrs = kmem_alloc(hdrs_len, KM_NOSLEEP); 2219 if (hdrs == NULL) 2220 return (ENOMEM); 2221 2222 if (connp->conn_ht_iphc != NULL) { 2223 kmem_free(connp->conn_ht_iphc, 2224 connp->conn_ht_iphc_allocated); 2225 } 2226 connp->conn_ht_iphc = hdrs; 2227 connp->conn_ht_iphc_allocated = hdrs_len; 2228 } else { 2229 hdrs = connp->conn_ht_iphc; 2230 } 2231 hdrs_len -= extra; 2232 connp->conn_ht_iphc_len = hdrs_len; 2233 2234 connp->conn_ht_ulp = hdrs + ip_hdr_length; 2235 connp->conn_ht_ulp_len = ulp_hdr_length; 2236 2237 if (ixa->ixa_flags & IXAF_IS_IPV4) { 2238 ipha_t *ipha = (ipha_t *)hdrs; 2239 2240 IN6_V4MAPPED_TO_IPADDR(v6src, ipha->ipha_src); 2241 IN6_V4MAPPED_TO_IPADDR(v6dst, ipha->ipha_dst); 2242 ip_build_hdrs_v4(hdrs, ip_hdr_length, ipp, connp->conn_proto); 2243 ipha->ipha_length = htons(hdrs_len); 2244 if (ixa->ixa_flags & IXAF_PMTU_IPV4_DF) 2245 ipha->ipha_fragment_offset_and_flags |= IPH_DF_HTONS; 2246 else 2247 ipha->ipha_fragment_offset_and_flags &= ~IPH_DF_HTONS; 2248 2249 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) { 2250 connp->conn_sum = cksum_massage_options_v4(ipha, 2251 connp->conn_netstack); 2252 } else { 2253 connp->conn_sum = 0; 2254 } 2255 } else { 2256 ip6_t *ip6h = (ip6_t *)hdrs; 2257 2258 ip6h->ip6_src = *v6src; 2259 ip6h->ip6_dst = *v6dst; 2260 ip_build_hdrs_v6(hdrs, ip_hdr_length, ipp, connp->conn_proto, 2261 flowinfo); 2262 ip6h->ip6_plen = htons(hdrs_len - IPV6_HDR_LEN); 2263 2264 if (ipp->ipp_fields & IPPF_RTHDR) { 2265 connp->conn_sum = cksum_massage_options_v6(ip6h, 2266 ip_hdr_length, connp->conn_netstack); 2267 2268 /* 2269 * Verify that the first hop isn't a mapped address. 2270 * Routers along the path need to do this verification 2271 * for subsequent hops. 2272 */ 2273 if (IN6_IS_ADDR_V4MAPPED(&ip6h->ip6_dst)) 2274 return (EADDRNOTAVAIL); 2275 2276 } else { 2277 connp->conn_sum = 0; 2278 } 2279 } 2280 return (0); 2281 } 2282 2283 /* 2284 * Prepend a header template to data_mp based on the ip_pkt_t 2285 * and the passed in source, destination and protocol. 2286 * 2287 * Returns failure if can't allocate memory, in which case data_mp is freed. 2288 * We allocate space for the transport header (ulp_hdr_len) and 2289 * indicate the offset of the ulp header by setting ixa_ip_hdr_length. 2290 * 2291 * We massage an routing option/header and return the ckecksum difference 2292 * in *sump. This is in host byte order. 2293 * 2294 * Caller needs to update conn_wroff if desired. 2295 */ 2296 mblk_t * 2297 conn_prepend_hdr(ip_xmit_attr_t *ixa, const ip_pkt_t *ipp, 2298 const in6_addr_t *v6src, const in6_addr_t *v6dst, 2299 uint8_t protocol, uint32_t flowinfo, uint_t ulp_hdr_length, mblk_t *data_mp, 2300 uint_t data_length, uint_t wroff_extra, uint32_t *sump, int *errorp) 2301 { 2302 uint_t ip_hdr_length; 2303 uchar_t *hdrs; 2304 uint_t hdrs_len; 2305 mblk_t *mp; 2306 2307 if (ixa->ixa_flags & IXAF_IS_IPV4) { 2308 ip_hdr_length = ip_total_hdrs_len_v4(ipp); 2309 ASSERT(ip_hdr_length <= IP_MAX_HDR_LENGTH); 2310 } else { 2311 ip_hdr_length = ip_total_hdrs_len_v6(ipp); 2312 } 2313 hdrs_len = ip_hdr_length + ulp_hdr_length; 2314 ASSERT(hdrs_len != 0); 2315 2316 ixa->ixa_ip_hdr_length = ip_hdr_length; 2317 2318 /* Can we prepend to data_mp? */ 2319 if (data_mp != NULL && 2320 data_mp->b_rptr - data_mp->b_datap->db_base >= hdrs_len && 2321 data_mp->b_datap->db_ref == 1) { 2322 hdrs = data_mp->b_rptr - hdrs_len; 2323 data_mp->b_rptr = hdrs; 2324 mp = data_mp; 2325 } else { 2326 mp = allocb(hdrs_len + wroff_extra, BPRI_MED); 2327 if (mp == NULL) { 2328 freemsg(data_mp); 2329 *errorp = ENOMEM; 2330 return (NULL); 2331 } 2332 mp->b_wptr = mp->b_datap->db_lim; 2333 hdrs = mp->b_rptr = mp->b_wptr - hdrs_len; 2334 mp->b_cont = data_mp; 2335 } 2336 2337 /* 2338 * Set the source in the header. ip_build_hdrs_v4/v6 will overwrite it 2339 * if PKTINFO (aka IPPF_ADDR) was set. 2340 */ 2341 if (ixa->ixa_flags & IXAF_IS_IPV4) { 2342 ipha_t *ipha = (ipha_t *)hdrs; 2343 2344 ASSERT(IN6_IS_ADDR_V4MAPPED(v6dst)); 2345 IN6_V4MAPPED_TO_IPADDR(v6src, ipha->ipha_src); 2346 IN6_V4MAPPED_TO_IPADDR(v6dst, ipha->ipha_dst); 2347 ip_build_hdrs_v4(hdrs, ip_hdr_length, ipp, protocol); 2348 ipha->ipha_length = htons(hdrs_len + data_length); 2349 if (ixa->ixa_flags & IXAF_PMTU_IPV4_DF) 2350 ipha->ipha_fragment_offset_and_flags |= IPH_DF_HTONS; 2351 else 2352 ipha->ipha_fragment_offset_and_flags &= ~IPH_DF_HTONS; 2353 2354 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) { 2355 *sump = cksum_massage_options_v4(ipha, 2356 ixa->ixa_ipst->ips_netstack); 2357 } else { 2358 *sump = 0; 2359 } 2360 } else { 2361 ip6_t *ip6h = (ip6_t *)hdrs; 2362 2363 ip6h->ip6_src = *v6src; 2364 ip6h->ip6_dst = *v6dst; 2365 ip_build_hdrs_v6(hdrs, ip_hdr_length, ipp, protocol, flowinfo); 2366 ip6h->ip6_plen = htons(hdrs_len + data_length - IPV6_HDR_LEN); 2367 2368 if (ipp->ipp_fields & IPPF_RTHDR) { 2369 *sump = cksum_massage_options_v6(ip6h, 2370 ip_hdr_length, ixa->ixa_ipst->ips_netstack); 2371 2372 /* 2373 * Verify that the first hop isn't a mapped address. 2374 * Routers along the path need to do this verification 2375 * for subsequent hops. 2376 */ 2377 if (IN6_IS_ADDR_V4MAPPED(&ip6h->ip6_dst)) { 2378 *errorp = EADDRNOTAVAIL; 2379 freemsg(mp); 2380 return (NULL); 2381 } 2382 } else { 2383 *sump = 0; 2384 } 2385 } 2386 return (mp); 2387 } 2388 2389 /* 2390 * Massage a source route if any putting the first hop 2391 * in ipha_dst. Compute a starting value for the checksum which 2392 * takes into account that the original ipha_dst should be 2393 * included in the checksum but that IP will include the 2394 * first hop from the source route in the tcp checksum. 2395 */ 2396 static uint32_t 2397 cksum_massage_options_v4(ipha_t *ipha, netstack_t *ns) 2398 { 2399 in_addr_t dst; 2400 uint32_t cksum; 2401 2402 /* Get last hop then diff against first hop */ 2403 cksum = ip_massage_options(ipha, ns); 2404 cksum = (cksum & 0xFFFF) + (cksum >> 16); 2405 dst = ipha->ipha_dst; 2406 cksum -= ((dst >> 16) + (dst & 0xffff)); 2407 if ((int)cksum < 0) 2408 cksum--; 2409 cksum = (cksum & 0xFFFF) + (cksum >> 16); 2410 cksum = (cksum & 0xFFFF) + (cksum >> 16); 2411 ASSERT(cksum < 0x10000); 2412 return (ntohs(cksum)); 2413 } 2414 2415 static uint32_t 2416 cksum_massage_options_v6(ip6_t *ip6h, uint_t ip_hdr_len, netstack_t *ns) 2417 { 2418 uint8_t *end; 2419 ip6_rthdr_t *rth; 2420 uint32_t cksum; 2421 2422 end = (uint8_t *)ip6h + ip_hdr_len; 2423 rth = ip_find_rthdr_v6(ip6h, end); 2424 if (rth == NULL) 2425 return (0); 2426 2427 cksum = ip_massage_options_v6(ip6h, rth, ns); 2428 cksum = (cksum & 0xFFFF) + (cksum >> 16); 2429 ASSERT(cksum < 0x10000); 2430 return (ntohs(cksum)); 2431 } 2432 2433 /* 2434 * ULPs that change the destination address need to call this for each 2435 * change to discard any state about a previous destination that might 2436 * have been multicast or multirt. 2437 */ 2438 void 2439 ip_attr_newdst(ip_xmit_attr_t *ixa) 2440 { 2441 ixa->ixa_flags &= ~(IXAF_LOOPBACK_COPY | IXAF_NO_HW_CKSUM | 2442 IXAF_NO_TTL_CHANGE | IXAF_IPV6_ADD_FRAGHDR | 2443 IXAF_NO_LOOP_ZONEID_SET); 2444 } 2445 2446 /* 2447 * Determine the nexthop which will be used. 2448 * Normally this is just the destination, but if a IPv4 source route, or 2449 * IPv6 routing header, is in the ip_pkt_t then we extract the nexthop from 2450 * there. 2451 */ 2452 void 2453 ip_attr_nexthop(const ip_pkt_t *ipp, const ip_xmit_attr_t *ixa, 2454 const in6_addr_t *dst, in6_addr_t *nexthop) 2455 { 2456 if (ixa->ixa_flags & IXAF_IS_IPV4) { 2457 ipaddr_t v4dst; 2458 ipaddr_t v4nexthop; 2459 2460 IN6_V4MAPPED_TO_IPADDR(dst, v4dst); 2461 v4nexthop = ip_pkt_source_route_v4(ipp); 2462 if (v4nexthop == INADDR_ANY) 2463 v4nexthop = v4dst; 2464 2465 IN6_IPADDR_TO_V4MAPPED(v4nexthop, nexthop); 2466 } else { 2467 const in6_addr_t *v6nexthop; 2468 2469 v6nexthop = ip_pkt_source_route_v6(ipp); 2470 if (v6nexthop == NULL) 2471 v6nexthop = dst; 2472 2473 *nexthop = *v6nexthop; 2474 } 2475 } 2476 2477 /* 2478 * Update the ip_xmit_attr_t based the addresses, conn_xmit_ipp and conn_ixa. 2479 * If IPDF_IPSEC is set we cache the IPsec policy to handle the unconnected 2480 * case (connected latching is done in conn_connect). 2481 * Note that IPsec policy lookup requires conn_proto and conn_laddr to be 2482 * set, but doesn't otherwise use the conn_t. 2483 * 2484 * Caller must set/clear IXAF_IS_IPV4 as appropriately. 2485 * Caller must use ip_attr_nexthop() to determine the nexthop argument. 2486 * 2487 * The caller must NOT hold conn_lock (to avoid problems with ill_refrele 2488 * causing the squeue to run doing ipcl_walk grabbing conn_lock.) 2489 * 2490 * Updates laddrp and uinfo if they are non-NULL. 2491 * 2492 * TSOL notes: The callers if ip_attr_connect must check if the destination 2493 * is different than before and in that case redo conn_update_label. 2494 * The callers of conn_connect do not need that since conn_connect 2495 * performs the conn_update_label. 2496 */ 2497 int 2498 ip_attr_connect(const conn_t *connp, ip_xmit_attr_t *ixa, 2499 const in6_addr_t *v6src, const in6_addr_t *v6dst, 2500 const in6_addr_t *v6nexthop, in_port_t dstport, in6_addr_t *laddrp, 2501 iulp_t *uinfo, uint32_t flags) 2502 { 2503 in6_addr_t laddr = *v6src; 2504 int error; 2505 2506 ASSERT(MUTEX_NOT_HELD(&connp->conn_lock)); 2507 2508 if (connp->conn_zone_is_global) 2509 flags |= IPDF_ZONE_IS_GLOBAL; 2510 else 2511 flags &= ~IPDF_ZONE_IS_GLOBAL; 2512 2513 /* 2514 * Lookup the route to determine a source address and the uinfo. 2515 * If the ULP has a source route option then the caller will 2516 * have set v6nexthop to be the first hop. 2517 */ 2518 if (ixa->ixa_flags & IXAF_IS_IPV4) { 2519 ipaddr_t v4dst; 2520 ipaddr_t v4src, v4nexthop; 2521 2522 IN6_V4MAPPED_TO_IPADDR(v6dst, v4dst); 2523 IN6_V4MAPPED_TO_IPADDR(v6nexthop, v4nexthop); 2524 IN6_V4MAPPED_TO_IPADDR(v6src, v4src); 2525 2526 if (connp->conn_unspec_src || v4src != INADDR_ANY) 2527 flags &= ~IPDF_SELECT_SRC; 2528 else 2529 flags |= IPDF_SELECT_SRC; 2530 2531 error = ip_set_destination_v4(&v4src, v4dst, v4nexthop, ixa, 2532 uinfo, flags, connp->conn_mac_mode); 2533 IN6_IPADDR_TO_V4MAPPED(v4src, &laddr); 2534 } else { 2535 if (connp->conn_unspec_src || !IN6_IS_ADDR_UNSPECIFIED(v6src)) 2536 flags &= ~IPDF_SELECT_SRC; 2537 else 2538 flags |= IPDF_SELECT_SRC; 2539 2540 error = ip_set_destination_v6(&laddr, v6dst, v6nexthop, ixa, 2541 uinfo, flags, connp->conn_mac_mode); 2542 } 2543 /* Pass out some address even if we hit a RTF_REJECT etc */ 2544 if (laddrp != NULL) 2545 *laddrp = laddr; 2546 2547 if (error != 0) 2548 return (error); 2549 2550 if (flags & IPDF_IPSEC) { 2551 /* 2552 * Set any IPsec policy in ixa. Routine also looks at ULP 2553 * ports. 2554 */ 2555 ipsec_cache_outbound_policy(connp, v6src, v6dst, dstport, ixa); 2556 } 2557 return (0); 2558 } 2559 2560 /* 2561 * Connect the conn based on the addresses, conn_xmit_ipp and conn_ixa. 2562 * Assumes that conn_faddr and conn_fport are already set. As such it is not 2563 * usable for SCTP, since SCTP has multiple faddrs. 2564 * 2565 * Caller must hold conn_lock to provide atomic constency between the 2566 * conn_t's addresses and the ixa. 2567 * NOTE: this function drops and reaquires conn_lock since it can't be 2568 * held across ip_attr_connect/ip_set_destination. 2569 * 2570 * The caller needs to handle inserting in the receive-side fanout when 2571 * appropriate after conn_connect returns. 2572 */ 2573 int 2574 conn_connect(conn_t *connp, iulp_t *uinfo, uint32_t flags) 2575 { 2576 ip_xmit_attr_t *ixa = connp->conn_ixa; 2577 in6_addr_t nexthop; 2578 in6_addr_t saddr, faddr; 2579 in_port_t fport; 2580 int error; 2581 2582 ASSERT(MUTEX_HELD(&connp->conn_lock)); 2583 2584 if (connp->conn_ipversion == IPV4_VERSION) 2585 ixa->ixa_flags |= IXAF_IS_IPV4; 2586 else 2587 ixa->ixa_flags &= ~IXAF_IS_IPV4; 2588 2589 /* We do IPsec latching below - hence no caching in ip_attr_connect */ 2590 flags &= ~IPDF_IPSEC; 2591 2592 /* In case we had previously done an ip_attr_connect */ 2593 ip_attr_newdst(ixa); 2594 2595 /* 2596 * Determine the nexthop and copy the addresses before dropping 2597 * conn_lock. 2598 */ 2599 ip_attr_nexthop(&connp->conn_xmit_ipp, connp->conn_ixa, 2600 &connp->conn_faddr_v6, &nexthop); 2601 saddr = connp->conn_saddr_v6; 2602 faddr = connp->conn_faddr_v6; 2603 fport = connp->conn_fport; 2604 2605 mutex_exit(&connp->conn_lock); 2606 error = ip_attr_connect(connp, ixa, &saddr, &faddr, &nexthop, fport, 2607 &saddr, uinfo, flags | IPDF_VERIFY_DST); 2608 mutex_enter(&connp->conn_lock); 2609 2610 /* Could have changed even if an error */ 2611 connp->conn_saddr_v6 = saddr; 2612 if (error != 0) 2613 return (error); 2614 2615 /* 2616 * Check whether Trusted Solaris policy allows communication with this 2617 * host, and pretend that the destination is unreachable if not. 2618 * Compute any needed label and place it in ipp_label_v4/v6. 2619 * 2620 * Later conn_build_hdr_template() takes ipp_label_v4/v6 to form 2621 * the packet. 2622 * 2623 * TSOL Note: Any concurrent threads would pick a different ixa 2624 * (and ipp if they are to change the ipp) so we 2625 * don't have to worry about concurrent threads. 2626 */ 2627 if (is_system_labeled()) { 2628 if (connp->conn_mlp_type != mlptSingle) 2629 return (ECONNREFUSED); 2630 2631 /* 2632 * conn_update_label will set ipp_label* which will later 2633 * be used by conn_build_hdr_template. 2634 */ 2635 error = conn_update_label(connp, ixa, 2636 &connp->conn_faddr_v6, &connp->conn_xmit_ipp); 2637 if (error != 0) 2638 return (error); 2639 } 2640 2641 /* 2642 * Ensure that we match on the selected local address. 2643 * This overrides conn_laddr in the case we had earlier bound to a 2644 * multicast or broadcast address. 2645 */ 2646 connp->conn_laddr_v6 = connp->conn_saddr_v6; 2647 2648 /* 2649 * Allow setting new policies. 2650 * The addresses/ports are already set, thus the IPsec policy calls 2651 * can handle their passed-in conn's. 2652 */ 2653 connp->conn_policy_cached = B_FALSE; 2654 2655 /* 2656 * Cache IPsec policy in this conn. If we have per-socket policy, 2657 * we'll cache that. If we don't, we'll inherit global policy. 2658 * 2659 * This is done before the caller inserts in the receive-side fanout. 2660 * Note that conn_policy_cached is set by ipsec_conn_cache_policy() even 2661 * for connections where we don't have a policy. This is to prevent 2662 * global policy lookups in the inbound path. 2663 * 2664 * If we insert before we set conn_policy_cached, 2665 * CONN_INBOUND_POLICY_PRESENT() check can still evaluate true 2666 * because global policy cound be non-empty. We normally call 2667 * ipsec_check_policy() for conn_policy_cached connections only if 2668 * conn_in_enforce_policy is set. But in this case, 2669 * conn_policy_cached can get set anytime since we made the 2670 * CONN_INBOUND_POLICY_PRESENT() check and ipsec_check_policy() is 2671 * called, which will make the above assumption false. Thus, we 2672 * need to insert after we set conn_policy_cached. 2673 */ 2674 error = ipsec_conn_cache_policy(connp, 2675 connp->conn_ipversion == IPV4_VERSION); 2676 if (error != 0) 2677 return (error); 2678 2679 /* 2680 * We defer to do LSO check until here since now we have better idea 2681 * whether IPsec is present. If the underlying ill is LSO capable, 2682 * copy its capability in so the ULP can decide whether to enable LSO 2683 * on this connection. So far, only TCP/IPv4 is implemented, so won't 2684 * claim LSO for IPv6. 2685 * 2686 * Currently, won't enable LSO for IRE_LOOPBACK or IRE_LOCAL, because 2687 * the receiver can not handle it. Also not to enable LSO for MULTIRT. 2688 */ 2689 ixa->ixa_flags &= ~IXAF_LSO_CAPAB; 2690 2691 ASSERT(ixa->ixa_ire != NULL); 2692 if (ixa->ixa_ipst->ips_ip_lso_outbound && (flags & IPDF_LSO) && 2693 !(ixa->ixa_flags & IXAF_IPSEC_SECURE) && 2694 !(ixa->ixa_ire->ire_type & (IRE_LOCAL | IRE_LOOPBACK)) && 2695 !(ixa->ixa_ire->ire_flags & RTF_MULTIRT) && 2696 (ixa->ixa_nce != NULL) && 2697 ((ixa->ixa_flags & IXAF_IS_IPV4) ? 2698 ILL_LSO_TCP_IPV4_USABLE(ixa->ixa_nce->nce_ill) : 2699 ILL_LSO_TCP_IPV6_USABLE(ixa->ixa_nce->nce_ill))) { 2700 ixa->ixa_lso_capab = *ixa->ixa_nce->nce_ill->ill_lso_capab; 2701 ixa->ixa_flags |= IXAF_LSO_CAPAB; 2702 } 2703 2704 /* Check whether ZEROCOPY capability is usable for this connection. */ 2705 ixa->ixa_flags &= ~IXAF_ZCOPY_CAPAB; 2706 2707 if ((flags & IPDF_ZCOPY) && 2708 !(ixa->ixa_flags & IXAF_IPSEC_SECURE) && 2709 !(ixa->ixa_ire->ire_type & (IRE_LOCAL | IRE_LOOPBACK)) && 2710 !(ixa->ixa_ire->ire_flags & RTF_MULTIRT) && 2711 (ixa->ixa_nce != NULL) && 2712 ILL_ZCOPY_USABLE(ixa->ixa_nce->nce_ill)) { 2713 ixa->ixa_flags |= IXAF_ZCOPY_CAPAB; 2714 } 2715 return (0); 2716 } 2717 2718 /* 2719 * Predicates to check if the addresses match conn_last* 2720 */ 2721 2722 /* 2723 * Compare the conn against an address. 2724 * If using mapped addresses on AF_INET6 sockets, use the _v6 function 2725 */ 2726 boolean_t 2727 conn_same_as_last_v4(conn_t *connp, sin_t *sin) 2728 { 2729 ASSERT(connp->conn_family == AF_INET); 2730 return (sin->sin_addr.s_addr == connp->conn_v4lastdst && 2731 sin->sin_port == connp->conn_lastdstport); 2732 } 2733 2734 /* 2735 * Compare, including for mapped addresses 2736 */ 2737 boolean_t 2738 conn_same_as_last_v6(conn_t *connp, sin6_t *sin6) 2739 { 2740 return (IN6_ARE_ADDR_EQUAL(&connp->conn_v6lastdst, &sin6->sin6_addr) && 2741 sin6->sin6_port == connp->conn_lastdstport && 2742 sin6->sin6_flowinfo == connp->conn_lastflowinfo && 2743 sin6->sin6_scope_id == connp->conn_lastscopeid); 2744 } 2745 2746 /* 2747 * Compute a label and place it in the ip_packet_t. 2748 * Handles IPv4 and IPv6. 2749 * The caller should have a correct ixa_tsl and ixa_zoneid and have 2750 * already called conn_connect or ip_attr_connect to ensure that tsol_check_dest 2751 * has been called. 2752 */ 2753 int 2754 conn_update_label(const conn_t *connp, const ip_xmit_attr_t *ixa, 2755 const in6_addr_t *v6dst, ip_pkt_t *ipp) 2756 { 2757 int err; 2758 ipaddr_t v4dst; 2759 2760 if (IN6_IS_ADDR_V4MAPPED(v6dst)) { 2761 uchar_t opt_storage[IP_MAX_OPT_LENGTH]; 2762 2763 IN6_V4MAPPED_TO_IPADDR(v6dst, v4dst); 2764 2765 err = tsol_compute_label_v4(ixa->ixa_tsl, ixa->ixa_zoneid, 2766 v4dst, opt_storage, ixa->ixa_ipst); 2767 if (err == 0) { 2768 /* Length contained in opt_storage[IPOPT_OLEN] */ 2769 err = optcom_pkt_set(opt_storage, 2770 opt_storage[IPOPT_OLEN], 2771 (uchar_t **)&ipp->ipp_label_v4, 2772 &ipp->ipp_label_len_v4); 2773 } 2774 if (err != 0) { 2775 DTRACE_PROBE4(tx__ip__log__info__updatelabel, 2776 char *, "conn(1) failed to update options(2) " 2777 "on ixa(3)", 2778 conn_t *, connp, char *, opt_storage, 2779 ip_xmit_attr_t *, ixa); 2780 } 2781 if (ipp->ipp_label_len_v4 != 0) 2782 ipp->ipp_fields |= IPPF_LABEL_V4; 2783 else 2784 ipp->ipp_fields &= ~IPPF_LABEL_V4; 2785 } else { 2786 uchar_t opt_storage[TSOL_MAX_IPV6_OPTION]; 2787 uint_t optlen; 2788 2789 err = tsol_compute_label_v6(ixa->ixa_tsl, ixa->ixa_zoneid, 2790 v6dst, opt_storage, ixa->ixa_ipst); 2791 if (err == 0) { 2792 /* 2793 * Note that ipp_label_v6 is just the option - not 2794 * the hopopts extension header. 2795 * 2796 * Length contained in opt_storage[IPOPT_OLEN], but 2797 * that doesn't include the two byte options header. 2798 */ 2799 optlen = opt_storage[IPOPT_OLEN]; 2800 if (optlen != 0) 2801 optlen += 2; 2802 2803 err = optcom_pkt_set(opt_storage, optlen, 2804 (uchar_t **)&ipp->ipp_label_v6, 2805 &ipp->ipp_label_len_v6); 2806 } 2807 if (err != 0) { 2808 DTRACE_PROBE4(tx__ip__log__info__updatelabel, 2809 char *, "conn(1) failed to update options(2) " 2810 "on ixa(3)", 2811 conn_t *, connp, char *, opt_storage, 2812 ip_xmit_attr_t *, ixa); 2813 } 2814 if (ipp->ipp_label_len_v6 != 0) 2815 ipp->ipp_fields |= IPPF_LABEL_V6; 2816 else 2817 ipp->ipp_fields &= ~IPPF_LABEL_V6; 2818 } 2819 return (err); 2820 } 2821 2822 /* 2823 * Inherit all options settings from the parent/listener to the eager. 2824 * Returns zero on success; ENOMEM if memory allocation failed. 2825 * 2826 * We assume that the eager has not had any work done i.e., the conn_ixa 2827 * and conn_xmit_ipp are all zero. 2828 * Furthermore we assume that no other thread can access the eager (because 2829 * it isn't inserted in any fanout list). 2830 */ 2831 int 2832 conn_inherit_parent(conn_t *lconnp, conn_t *econnp) 2833 { 2834 cred_t *credp; 2835 int err; 2836 void *notify_cookie; 2837 2838 econnp->conn_family = lconnp->conn_family; 2839 econnp->conn_ipv6_v6only = lconnp->conn_ipv6_v6only; 2840 econnp->conn_wq = lconnp->conn_wq; 2841 econnp->conn_rq = lconnp->conn_rq; 2842 2843 /* 2844 * Make a safe copy of the transmit attributes. 2845 * conn_connect will later be used by the caller to setup the ire etc. 2846 */ 2847 ASSERT(econnp->conn_ixa->ixa_refcnt == 1); 2848 ASSERT(econnp->conn_ixa->ixa_ire == NULL); 2849 ASSERT(econnp->conn_ixa->ixa_dce == NULL); 2850 ASSERT(econnp->conn_ixa->ixa_nce == NULL); 2851 2852 /* Preserve ixa_notify_cookie */ 2853 notify_cookie = econnp->conn_ixa->ixa_notify_cookie; 2854 ixa_safe_copy(lconnp->conn_ixa, econnp->conn_ixa); 2855 econnp->conn_ixa->ixa_notify_cookie = notify_cookie; 2856 2857 econnp->conn_bound_if = lconnp->conn_bound_if; 2858 econnp->conn_incoming_ifindex = lconnp->conn_incoming_ifindex; 2859 2860 /* Inherit all RECV options */ 2861 econnp->conn_recv_ancillary = lconnp->conn_recv_ancillary; 2862 2863 err = ip_pkt_copy(&lconnp->conn_xmit_ipp, &econnp->conn_xmit_ipp, 2864 KM_NOSLEEP); 2865 if (err != 0) 2866 return (err); 2867 2868 econnp->conn_zoneid = lconnp->conn_zoneid; 2869 econnp->conn_allzones = lconnp->conn_allzones; 2870 2871 /* This is odd. Pick a flowlabel for each connection instead? */ 2872 econnp->conn_flowinfo = lconnp->conn_flowinfo; 2873 2874 econnp->conn_default_ttl = lconnp->conn_default_ttl; 2875 2876 /* 2877 * TSOL: tsol_input_proc() needs the eager's cred before the 2878 * eager is accepted 2879 */ 2880 ASSERT(lconnp->conn_cred != NULL); 2881 econnp->conn_cred = credp = lconnp->conn_cred; 2882 crhold(credp); 2883 econnp->conn_cpid = lconnp->conn_cpid; 2884 econnp->conn_open_time = lbolt64; 2885 2886 /* 2887 * Cache things in the ixa without any refhold. 2888 * Listener might not have set up ixa_cred 2889 */ 2890 econnp->conn_ixa->ixa_cred = econnp->conn_cred; 2891 econnp->conn_ixa->ixa_cpid = econnp->conn_cpid; 2892 if (is_system_labeled()) 2893 econnp->conn_ixa->ixa_tsl = crgetlabel(econnp->conn_cred); 2894 2895 /* 2896 * If the caller has the process-wide flag set, then default to MAC 2897 * exempt mode. This allows read-down to unlabeled hosts. 2898 */ 2899 if (getpflags(NET_MAC_AWARE, credp) != 0) 2900 econnp->conn_mac_mode = CONN_MAC_AWARE; 2901 2902 econnp->conn_zone_is_global = lconnp->conn_zone_is_global; 2903 2904 /* 2905 * We eliminate the need for sockfs to send down a T_SVR4_OPTMGMT_REQ 2906 * via soaccept()->soinheritoptions() which essentially applies 2907 * all the listener options to the new connection. The options that we 2908 * need to take care of are: 2909 * SO_DEBUG, SO_REUSEADDR, SO_KEEPALIVE, SO_DONTROUTE, SO_BROADCAST, 2910 * SO_USELOOPBACK, SO_OOBINLINE, SO_DGRAM_ERRIND, SO_LINGER, 2911 * SO_SNDBUF, SO_RCVBUF. 2912 * 2913 * SO_RCVBUF: conn_rcvbuf is set. 2914 * SO_SNDBUF: conn_sndbuf is set. 2915 */ 2916 2917 econnp->conn_sndbuf = lconnp->conn_sndbuf; 2918 econnp->conn_rcvbuf = lconnp->conn_rcvbuf; 2919 econnp->conn_sndlowat = lconnp->conn_sndlowat; 2920 econnp->conn_rcvlowat = lconnp->conn_rcvlowat; 2921 econnp->conn_dgram_errind = lconnp->conn_dgram_errind; 2922 econnp->conn_oobinline = lconnp->conn_oobinline; 2923 econnp->conn_debug = lconnp->conn_debug; 2924 econnp->conn_keepalive = lconnp->conn_keepalive; 2925 econnp->conn_linger = lconnp->conn_linger; 2926 econnp->conn_lingertime = lconnp->conn_lingertime; 2927 2928 /* Set the IP options */ 2929 econnp->conn_broadcast = lconnp->conn_broadcast; 2930 econnp->conn_useloopback = lconnp->conn_useloopback; 2931 econnp->conn_reuseaddr = lconnp->conn_reuseaddr; 2932 return (0); 2933 } 2934