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) + 225 ucredminsize(ira->ira_cred); 226 IP_STAT(ipst, conn_in_recvucred); 227 } 228 229 /* 230 * If SO_TIMESTAMP is set allocate the appropriate sized 231 * buffer. Since gethrestime() expects a pointer aligned 232 * argument, we allocate space necessary for extra 233 * alignment (even though it might not be used). 234 */ 235 if (recv_ancillary.crb_timestamp) { 236 ancil_size += sizeof (struct T_opthdr) + 237 sizeof (timestruc_t) + _POINTER_ALIGNMENT; 238 IP_STAT(ipst, conn_in_timestamp); 239 } 240 241 /* 242 * If IP_RECVTTL is set allocate the appropriate sized buffer 243 */ 244 if (recv_ancillary.crb_recvttl && 245 (ira->ira_flags & IRAF_IS_IPV4)) { 246 ancil_size += sizeof (struct T_opthdr) + sizeof (uint8_t); 247 IP_STAT(ipst, conn_in_recvttl); 248 } 249 250 return (ancil_size); 251 } 252 253 /* 254 * Lay down the ancillary data items at "ancil_buf". 255 * Assumes caller has used conn_recvancillary_size to allocate a sufficiently 256 * large buffer - ancil_size. 257 */ 258 void 259 conn_recvancillary_add(conn_t *connp, crb_t recv_ancillary, 260 ip_recv_attr_t *ira, ip_pkt_t *ipp, uchar_t *ancil_buf, uint_t ancil_size) 261 { 262 /* 263 * Copy in destination address before options to avoid 264 * any padding issues. 265 */ 266 if (recv_ancillary.crb_recvdstaddr && 267 (ira->ira_flags & IRAF_IS_IPV4)) { 268 struct T_opthdr *toh; 269 ipaddr_t *dstptr; 270 271 toh = (struct T_opthdr *)ancil_buf; 272 toh->level = IPPROTO_IP; 273 toh->name = IP_RECVDSTADDR; 274 toh->len = sizeof (struct T_opthdr) + sizeof (ipaddr_t); 275 toh->status = 0; 276 ancil_buf += sizeof (struct T_opthdr); 277 dstptr = (ipaddr_t *)ancil_buf; 278 *dstptr = ipp->ipp_addr_v4; 279 ancil_buf += sizeof (ipaddr_t); 280 ancil_size -= toh->len; 281 } 282 283 /* 284 * ip_recvpktinfo is used for both AF_INET and AF_INET6 but 285 * are different 286 */ 287 if (recv_ancillary.crb_ip_recvpktinfo && 288 connp->conn_family == AF_INET) { 289 ip_stack_t *ipst = connp->conn_netstack->netstack_ip; 290 struct T_opthdr *toh; 291 struct in_pktinfo *pktinfop; 292 ill_t *ill; 293 ipif_t *ipif; 294 295 toh = (struct T_opthdr *)ancil_buf; 296 toh->level = IPPROTO_IP; 297 toh->name = IP_PKTINFO; 298 toh->len = sizeof (struct T_opthdr) + sizeof (*pktinfop); 299 toh->status = 0; 300 ancil_buf += sizeof (struct T_opthdr); 301 pktinfop = (struct in_pktinfo *)ancil_buf; 302 303 pktinfop->ipi_ifindex = ira->ira_ruifindex; 304 pktinfop->ipi_spec_dst.s_addr = INADDR_ANY; 305 306 /* Find a good address to report */ 307 ill = ill_lookup_on_ifindex(ira->ira_ruifindex, B_FALSE, ipst); 308 if (ill != NULL) { 309 ipif = ipif_good_addr(ill, IPCL_ZONEID(connp)); 310 if (ipif != NULL) { 311 pktinfop->ipi_spec_dst.s_addr = 312 ipif->ipif_lcl_addr; 313 ipif_refrele(ipif); 314 } 315 ill_refrele(ill); 316 } 317 pktinfop->ipi_addr.s_addr = ipp->ipp_addr_v4; 318 ancil_buf += sizeof (struct in_pktinfo); 319 ancil_size -= toh->len; 320 } 321 322 if ((recv_ancillary.crb_recvopts) && 323 (ipp->ipp_fields & IPPF_IPV4_OPTIONS)) { 324 struct T_opthdr *toh; 325 326 toh = (struct T_opthdr *)ancil_buf; 327 toh->level = IPPROTO_IP; 328 toh->name = IP_RECVOPTS; 329 toh->len = sizeof (struct T_opthdr) + ipp->ipp_ipv4_options_len; 330 toh->status = 0; 331 ancil_buf += sizeof (struct T_opthdr); 332 bcopy(ipp->ipp_ipv4_options, ancil_buf, 333 ipp->ipp_ipv4_options_len); 334 ancil_buf += ipp->ipp_ipv4_options_len; 335 ancil_size -= toh->len; 336 } 337 338 if (recv_ancillary.crb_recvslla) { 339 ip_stack_t *ipst = connp->conn_netstack->netstack_ip; 340 struct T_opthdr *toh; 341 struct sockaddr_dl *dstptr; 342 ill_t *ill; 343 int alen = 0; 344 345 ill = ill_lookup_on_ifindex(ira->ira_rifindex, B_FALSE, ipst); 346 if (ill != NULL) 347 alen = ill->ill_phys_addr_length; 348 349 /* 350 * For loopback multicast and broadcast the packet arrives 351 * with ira_ruifdex being the physical interface, but 352 * ira_l2src is all zero since ip_postfrag_loopback doesn't 353 * know our l2src. We don't report the address in that case. 354 */ 355 if (ira->ira_flags & IRAF_LOOPBACK) 356 alen = 0; 357 358 toh = (struct T_opthdr *)ancil_buf; 359 toh->level = IPPROTO_IP; 360 toh->name = IP_RECVSLLA; 361 toh->len = sizeof (struct T_opthdr) + 362 sizeof (struct sockaddr_dl); 363 toh->status = 0; 364 ancil_buf += sizeof (struct T_opthdr); 365 dstptr = (struct sockaddr_dl *)ancil_buf; 366 dstptr->sdl_family = AF_LINK; 367 dstptr->sdl_index = ira->ira_ruifindex; 368 if (ill != NULL) 369 dstptr->sdl_type = ill->ill_type; 370 else 371 dstptr->sdl_type = 0; 372 dstptr->sdl_nlen = 0; 373 dstptr->sdl_alen = alen; 374 dstptr->sdl_slen = 0; 375 bcopy(ira->ira_l2src, dstptr->sdl_data, alen); 376 ancil_buf += sizeof (struct sockaddr_dl); 377 ancil_size -= toh->len; 378 if (ill != NULL) 379 ill_refrele(ill); 380 } 381 382 if (recv_ancillary.crb_recvif) { 383 struct T_opthdr *toh; 384 uint_t *dstptr; 385 386 toh = (struct T_opthdr *)ancil_buf; 387 toh->level = IPPROTO_IP; 388 toh->name = IP_RECVIF; 389 toh->len = sizeof (struct T_opthdr) + sizeof (uint_t); 390 toh->status = 0; 391 ancil_buf += sizeof (struct T_opthdr); 392 dstptr = (uint_t *)ancil_buf; 393 *dstptr = ira->ira_ruifindex; 394 ancil_buf += sizeof (uint_t); 395 ancil_size -= toh->len; 396 } 397 398 /* 399 * ip_recvpktinfo is used for both AF_INET and AF_INET6 but 400 * are different 401 */ 402 if (recv_ancillary.crb_ip_recvpktinfo && 403 connp->conn_family == AF_INET6) { 404 struct T_opthdr *toh; 405 struct in6_pktinfo *pkti; 406 407 toh = (struct T_opthdr *)ancil_buf; 408 toh->level = IPPROTO_IPV6; 409 toh->name = IPV6_PKTINFO; 410 toh->len = sizeof (struct T_opthdr) + sizeof (*pkti); 411 toh->status = 0; 412 ancil_buf += sizeof (struct T_opthdr); 413 pkti = (struct in6_pktinfo *)ancil_buf; 414 if (ira->ira_flags & IRAF_IS_IPV4) { 415 IN6_IPADDR_TO_V4MAPPED(ipp->ipp_addr_v4, 416 &pkti->ipi6_addr); 417 } else { 418 pkti->ipi6_addr = ipp->ipp_addr; 419 } 420 pkti->ipi6_ifindex = ira->ira_ruifindex; 421 422 ancil_buf += sizeof (*pkti); 423 ancil_size -= toh->len; 424 } 425 if (recv_ancillary.crb_ipv6_recvhoplimit) { 426 struct T_opthdr *toh; 427 428 toh = (struct T_opthdr *)ancil_buf; 429 toh->level = IPPROTO_IPV6; 430 toh->name = IPV6_HOPLIMIT; 431 toh->len = sizeof (struct T_opthdr) + sizeof (uint_t); 432 toh->status = 0; 433 ancil_buf += sizeof (struct T_opthdr); 434 *(uint_t *)ancil_buf = ipp->ipp_hoplimit; 435 ancil_buf += sizeof (uint_t); 436 ancil_size -= toh->len; 437 } 438 if (recv_ancillary.crb_ipv6_recvtclass) { 439 struct T_opthdr *toh; 440 441 toh = (struct T_opthdr *)ancil_buf; 442 toh->level = IPPROTO_IPV6; 443 toh->name = IPV6_TCLASS; 444 toh->len = sizeof (struct T_opthdr) + sizeof (uint_t); 445 toh->status = 0; 446 ancil_buf += sizeof (struct T_opthdr); 447 448 if (ira->ira_flags & IRAF_IS_IPV4) 449 *(uint_t *)ancil_buf = ipp->ipp_type_of_service; 450 else 451 *(uint_t *)ancil_buf = ipp->ipp_tclass; 452 ancil_buf += sizeof (uint_t); 453 ancil_size -= toh->len; 454 } 455 if (recv_ancillary.crb_ipv6_recvhopopts && 456 (ipp->ipp_fields & IPPF_HOPOPTS)) { 457 struct T_opthdr *toh; 458 459 toh = (struct T_opthdr *)ancil_buf; 460 toh->level = IPPROTO_IPV6; 461 toh->name = IPV6_HOPOPTS; 462 toh->len = sizeof (struct T_opthdr) + ipp->ipp_hopoptslen; 463 toh->status = 0; 464 ancil_buf += sizeof (struct T_opthdr); 465 bcopy(ipp->ipp_hopopts, ancil_buf, ipp->ipp_hopoptslen); 466 ancil_buf += ipp->ipp_hopoptslen; 467 ancil_size -= toh->len; 468 } 469 /* 470 * To honor RFC3542 when an application asks for both IPV6_RECVDSTOPTS 471 * and IPV6_RECVRTHDR, we pass up the item rthdrdstopts (the destination 472 * options that appear before a routing header. 473 * We also pass them up if IPV6_RECVRTHDRDSTOPTS is set. 474 */ 475 if (ipp->ipp_fields & IPPF_RTHDRDSTOPTS) { 476 if (recv_ancillary.crb_ipv6_recvrthdrdstopts || 477 (recv_ancillary.crb_ipv6_recvdstopts && 478 recv_ancillary.crb_ipv6_recvrthdr)) { 479 struct T_opthdr *toh; 480 481 toh = (struct T_opthdr *)ancil_buf; 482 toh->level = IPPROTO_IPV6; 483 toh->name = IPV6_DSTOPTS; 484 toh->len = sizeof (struct T_opthdr) + 485 ipp->ipp_rthdrdstoptslen; 486 toh->status = 0; 487 ancil_buf += sizeof (struct T_opthdr); 488 bcopy(ipp->ipp_rthdrdstopts, ancil_buf, 489 ipp->ipp_rthdrdstoptslen); 490 ancil_buf += ipp->ipp_rthdrdstoptslen; 491 ancil_size -= toh->len; 492 } 493 } 494 if (recv_ancillary.crb_ipv6_recvrthdr && 495 (ipp->ipp_fields & IPPF_RTHDR)) { 496 struct T_opthdr *toh; 497 498 toh = (struct T_opthdr *)ancil_buf; 499 toh->level = IPPROTO_IPV6; 500 toh->name = IPV6_RTHDR; 501 toh->len = sizeof (struct T_opthdr) + ipp->ipp_rthdrlen; 502 toh->status = 0; 503 ancil_buf += sizeof (struct T_opthdr); 504 bcopy(ipp->ipp_rthdr, ancil_buf, ipp->ipp_rthdrlen); 505 ancil_buf += ipp->ipp_rthdrlen; 506 ancil_size -= toh->len; 507 } 508 if ((recv_ancillary.crb_ipv6_recvdstopts || 509 recv_ancillary.crb_old_ipv6_recvdstopts) && 510 (ipp->ipp_fields & IPPF_DSTOPTS)) { 511 struct T_opthdr *toh; 512 513 toh = (struct T_opthdr *)ancil_buf; 514 toh->level = IPPROTO_IPV6; 515 toh->name = IPV6_DSTOPTS; 516 toh->len = sizeof (struct T_opthdr) + ipp->ipp_dstoptslen; 517 toh->status = 0; 518 ancil_buf += sizeof (struct T_opthdr); 519 bcopy(ipp->ipp_dstopts, ancil_buf, ipp->ipp_dstoptslen); 520 ancil_buf += ipp->ipp_dstoptslen; 521 ancil_size -= toh->len; 522 } 523 524 if (recv_ancillary.crb_recvucred && ira->ira_cred != NULL) { 525 struct T_opthdr *toh; 526 cred_t *rcr = connp->conn_cred; 527 528 toh = (struct T_opthdr *)ancil_buf; 529 toh->level = SOL_SOCKET; 530 toh->name = SCM_UCRED; 531 toh->len = sizeof (struct T_opthdr) + 532 ucredminsize(ira->ira_cred); 533 toh->status = 0; 534 (void) cred2ucred(ira->ira_cred, ira->ira_cpid, &toh[1], rcr); 535 ancil_buf += toh->len; 536 ancil_size -= toh->len; 537 } 538 if (recv_ancillary.crb_timestamp) { 539 struct T_opthdr *toh; 540 541 toh = (struct T_opthdr *)ancil_buf; 542 toh->level = SOL_SOCKET; 543 toh->name = SCM_TIMESTAMP; 544 toh->len = sizeof (struct T_opthdr) + 545 sizeof (timestruc_t) + _POINTER_ALIGNMENT; 546 toh->status = 0; 547 ancil_buf += sizeof (struct T_opthdr); 548 /* Align for gethrestime() */ 549 ancil_buf = (uchar_t *)P2ROUNDUP((intptr_t)ancil_buf, 550 sizeof (intptr_t)); 551 gethrestime((timestruc_t *)ancil_buf); 552 ancil_buf = (uchar_t *)toh + toh->len; 553 ancil_size -= toh->len; 554 } 555 556 /* 557 * CAUTION: 558 * Due to aligment issues 559 * Processing of IP_RECVTTL option 560 * should always be the last. Adding 561 * any option processing after this will 562 * cause alignment panic. 563 */ 564 if (recv_ancillary.crb_recvttl && 565 (ira->ira_flags & IRAF_IS_IPV4)) { 566 struct T_opthdr *toh; 567 uint8_t *dstptr; 568 569 toh = (struct T_opthdr *)ancil_buf; 570 toh->level = IPPROTO_IP; 571 toh->name = IP_RECVTTL; 572 toh->len = sizeof (struct T_opthdr) + sizeof (uint8_t); 573 toh->status = 0; 574 ancil_buf += sizeof (struct T_opthdr); 575 dstptr = (uint8_t *)ancil_buf; 576 *dstptr = ipp->ipp_hoplimit; 577 ancil_buf += sizeof (uint8_t); 578 ancil_size -= toh->len; 579 } 580 581 /* Consumed all of allocated space */ 582 ASSERT(ancil_size == 0); 583 584 } 585 586 /* 587 * This routine retrieves the current status of socket options. 588 * It returns the size of the option retrieved, or -1. 589 */ 590 int 591 conn_opt_get(conn_opt_arg_t *coa, t_scalar_t level, t_scalar_t name, 592 uchar_t *ptr) 593 { 594 int *i1 = (int *)ptr; 595 conn_t *connp = coa->coa_connp; 596 ip_xmit_attr_t *ixa = coa->coa_ixa; 597 ip_pkt_t *ipp = coa->coa_ipp; 598 ip_stack_t *ipst = ixa->ixa_ipst; 599 uint_t len; 600 601 ASSERT(MUTEX_HELD(&coa->coa_connp->conn_lock)); 602 603 switch (level) { 604 case SOL_SOCKET: 605 switch (name) { 606 case SO_DEBUG: 607 *i1 = connp->conn_debug ? SO_DEBUG : 0; 608 break; /* goto sizeof (int) option return */ 609 case SO_KEEPALIVE: 610 *i1 = connp->conn_keepalive ? SO_KEEPALIVE : 0; 611 break; 612 case SO_LINGER: { 613 struct linger *lgr = (struct linger *)ptr; 614 615 lgr->l_onoff = connp->conn_linger ? SO_LINGER : 0; 616 lgr->l_linger = connp->conn_lingertime; 617 } 618 return (sizeof (struct linger)); 619 620 case SO_OOBINLINE: 621 *i1 = connp->conn_oobinline ? SO_OOBINLINE : 0; 622 break; 623 case SO_REUSEADDR: 624 *i1 = connp->conn_reuseaddr ? SO_REUSEADDR : 0; 625 break; /* goto sizeof (int) option return */ 626 case SO_TYPE: 627 *i1 = connp->conn_so_type; 628 break; /* goto sizeof (int) option return */ 629 case SO_DONTROUTE: 630 *i1 = (ixa->ixa_flags & IXAF_DONTROUTE) ? 631 SO_DONTROUTE : 0; 632 break; /* goto sizeof (int) option return */ 633 case SO_USELOOPBACK: 634 *i1 = connp->conn_useloopback ? SO_USELOOPBACK : 0; 635 break; /* goto sizeof (int) option return */ 636 case SO_BROADCAST: 637 *i1 = connp->conn_broadcast ? SO_BROADCAST : 0; 638 break; /* goto sizeof (int) option return */ 639 640 case SO_SNDBUF: 641 *i1 = connp->conn_sndbuf; 642 break; /* goto sizeof (int) option return */ 643 case SO_RCVBUF: 644 *i1 = connp->conn_rcvbuf; 645 break; /* goto sizeof (int) option return */ 646 case SO_RCVTIMEO: 647 case SO_SNDTIMEO: 648 /* 649 * Pass these two options in order for third part 650 * protocol usage. Here just return directly. 651 */ 652 *i1 = 0; 653 break; 654 case SO_DGRAM_ERRIND: 655 *i1 = connp->conn_dgram_errind ? SO_DGRAM_ERRIND : 0; 656 break; /* goto sizeof (int) option return */ 657 case SO_RECVUCRED: 658 *i1 = connp->conn_recv_ancillary.crb_recvucred; 659 break; /* goto sizeof (int) option return */ 660 case SO_TIMESTAMP: 661 *i1 = connp->conn_recv_ancillary.crb_timestamp; 662 break; /* goto sizeof (int) option return */ 663 case SO_VRRP: 664 *i1 = connp->conn_isvrrp; 665 break; /* goto sizeof (int) option return */ 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 case SO_VRRP: 1062 if (secpolicy_ip_config(cr, checkonly) != 0) 1063 return (EACCES); 1064 break; 1065 case SO_MAC_EXEMPT: 1066 if (secpolicy_net_mac_aware(cr) != 0) 1067 return (EACCES); 1068 if (IPCL_IS_BOUND(connp)) 1069 return (EINVAL); 1070 break; 1071 case SO_MAC_IMPLICIT: 1072 if (secpolicy_net_mac_implicit(cr) != 0) 1073 return (EACCES); 1074 break; 1075 } 1076 if (checkonly) 1077 return (0); 1078 1079 mutex_enter(&connp->conn_lock); 1080 /* Here we set the actual option value */ 1081 switch (name) { 1082 case SO_DEBUG: 1083 connp->conn_debug = onoff; 1084 break; 1085 case SO_KEEPALIVE: 1086 connp->conn_keepalive = onoff; 1087 break; 1088 case SO_LINGER: { 1089 struct linger *lgr = (struct linger *)invalp; 1090 1091 if (lgr->l_onoff) { 1092 connp->conn_linger = 1; 1093 connp->conn_lingertime = lgr->l_linger; 1094 } else { 1095 connp->conn_linger = 0; 1096 connp->conn_lingertime = 0; 1097 } 1098 break; 1099 } 1100 case SO_OOBINLINE: 1101 connp->conn_oobinline = onoff; 1102 coa->coa_changed |= COA_OOBINLINE_CHANGED; 1103 break; 1104 case SO_REUSEADDR: 1105 connp->conn_reuseaddr = onoff; 1106 break; 1107 case SO_DONTROUTE: 1108 if (onoff) 1109 ixa->ixa_flags |= IXAF_DONTROUTE; 1110 else 1111 ixa->ixa_flags &= ~IXAF_DONTROUTE; 1112 coa->coa_changed |= COA_ROUTE_CHANGED; 1113 break; 1114 case SO_USELOOPBACK: 1115 connp->conn_useloopback = onoff; 1116 break; 1117 case SO_BROADCAST: 1118 connp->conn_broadcast = onoff; 1119 break; 1120 case SO_SNDBUF: 1121 /* ULP has range checked the value */ 1122 connp->conn_sndbuf = *i1; 1123 coa->coa_changed |= COA_SNDBUF_CHANGED; 1124 break; 1125 case SO_RCVBUF: 1126 /* ULP has range checked the value */ 1127 connp->conn_rcvbuf = *i1; 1128 coa->coa_changed |= COA_RCVBUF_CHANGED; 1129 break; 1130 case SO_RCVTIMEO: 1131 case SO_SNDTIMEO: 1132 /* 1133 * Pass these two options in order for third part 1134 * protocol usage. 1135 */ 1136 break; 1137 case SO_DGRAM_ERRIND: 1138 connp->conn_dgram_errind = onoff; 1139 break; 1140 case SO_RECVUCRED: 1141 connp->conn_recv_ancillary.crb_recvucred = onoff; 1142 break; 1143 case SO_ALLZONES: 1144 connp->conn_allzones = onoff; 1145 coa->coa_changed |= COA_ROUTE_CHANGED; 1146 if (onoff) 1147 ixa->ixa_zoneid = ALL_ZONES; 1148 else 1149 ixa->ixa_zoneid = connp->conn_zoneid; 1150 break; 1151 case SO_TIMESTAMP: 1152 connp->conn_recv_ancillary.crb_timestamp = onoff; 1153 break; 1154 case SO_VRRP: 1155 connp->conn_isvrrp = onoff; 1156 break; 1157 case SO_ANON_MLP: 1158 connp->conn_anon_mlp = onoff; 1159 break; 1160 case SO_MAC_EXEMPT: 1161 connp->conn_mac_mode = onoff ? 1162 CONN_MAC_AWARE : CONN_MAC_DEFAULT; 1163 break; 1164 case SO_MAC_IMPLICIT: 1165 connp->conn_mac_mode = onoff ? 1166 CONN_MAC_IMPLICIT : CONN_MAC_DEFAULT; 1167 break; 1168 case SO_EXCLBIND: 1169 connp->conn_exclbind = onoff; 1170 break; 1171 } 1172 mutex_exit(&connp->conn_lock); 1173 return (0); 1174 } 1175 1176 /* Handle IPPROTO_IP */ 1177 static int 1178 conn_opt_set_ip(conn_opt_arg_t *coa, t_scalar_t name, uint_t inlen, 1179 uchar_t *invalp, boolean_t checkonly, cred_t *cr) 1180 { 1181 conn_t *connp = coa->coa_connp; 1182 ip_xmit_attr_t *ixa = coa->coa_ixa; 1183 ip_pkt_t *ipp = coa->coa_ipp; 1184 int *i1 = (int *)invalp; 1185 boolean_t onoff = (*i1 == 0) ? 0 : 1; 1186 ipaddr_t addr = (ipaddr_t)*i1; 1187 uint_t ifindex; 1188 zoneid_t zoneid = IPCL_ZONEID(connp); 1189 ipif_t *ipif; 1190 ip_stack_t *ipst = connp->conn_netstack->netstack_ip; 1191 int error; 1192 1193 if (connp->conn_family != AF_INET) 1194 return (EINVAL); 1195 1196 switch (name) { 1197 case IP_TTL: 1198 /* Don't allow zero */ 1199 if (*i1 < 1 || *i1 > 255) 1200 return (EINVAL); 1201 break; 1202 case IP_MULTICAST_IF: 1203 if (addr == INADDR_ANY) { 1204 /* Clear */ 1205 ifindex = 0; 1206 break; 1207 } 1208 ipif = ipif_lookup_addr(addr, NULL, zoneid, ipst); 1209 if (ipif == NULL) 1210 return (EHOSTUNREACH); 1211 /* not supported by the virtual network iface */ 1212 if (IS_VNI(ipif->ipif_ill)) { 1213 ipif_refrele(ipif); 1214 return (EINVAL); 1215 } 1216 ifindex = ipif->ipif_ill->ill_phyint->phyint_ifindex; 1217 ipif_refrele(ipif); 1218 break; 1219 case IP_NEXTHOP: { 1220 ire_t *ire; 1221 1222 if (addr == INADDR_ANY) { 1223 /* Clear */ 1224 break; 1225 } 1226 /* Verify that the next-hop is on-link */ 1227 ire = ire_ftable_lookup_v4(addr, 0, 0, IRE_ONLINK, NULL, zoneid, 1228 NULL, MATCH_IRE_TYPE, 0, ipst, NULL); 1229 if (ire == NULL) 1230 return (EHOSTUNREACH); 1231 ire_refrele(ire); 1232 break; 1233 } 1234 case IP_OPTIONS: 1235 case T_IP_OPTIONS: { 1236 uint_t newlen; 1237 1238 if (ipp->ipp_fields & IPPF_LABEL_V4) 1239 newlen = inlen + (ipp->ipp_label_len_v4 + 3) & ~3; 1240 else 1241 newlen = inlen; 1242 if ((inlen & 0x3) || newlen > IP_MAX_OPT_LENGTH) { 1243 return (EINVAL); 1244 } 1245 break; 1246 } 1247 case IP_PKTINFO: { 1248 struct in_pktinfo *pktinfo; 1249 1250 /* Two different valid lengths */ 1251 if (inlen != sizeof (int) && 1252 inlen != sizeof (struct in_pktinfo)) 1253 return (EINVAL); 1254 if (inlen == sizeof (int)) 1255 break; 1256 1257 pktinfo = (struct in_pktinfo *)invalp; 1258 if (pktinfo->ipi_spec_dst.s_addr != INADDR_ANY) { 1259 switch (ip_laddr_verify_v4(pktinfo->ipi_spec_dst.s_addr, 1260 zoneid, ipst, B_FALSE)) { 1261 case IPVL_UNICAST_UP: 1262 case IPVL_UNICAST_DOWN: 1263 break; 1264 default: 1265 return (EADDRNOTAVAIL); 1266 } 1267 } 1268 if (!ip_ifindex_valid(pktinfo->ipi_ifindex, B_FALSE, ipst)) 1269 return (ENXIO); 1270 break; 1271 } 1272 case IP_BOUND_IF: 1273 ifindex = *(uint_t *)i1; 1274 1275 /* Just check it is ok. */ 1276 if (!ip_ifindex_valid(ifindex, B_FALSE, ipst)) 1277 return (ENXIO); 1278 break; 1279 } 1280 if (checkonly) 1281 return (0); 1282 1283 /* Here we set the actual option value */ 1284 /* 1285 * conn_lock protects the bitfields, and is used to 1286 * set the fields atomically. Not needed for ixa settings since 1287 * the caller has an exclusive copy of the ixa. 1288 * We can not hold conn_lock across the multicast options though. 1289 */ 1290 switch (name) { 1291 case IP_OPTIONS: 1292 case T_IP_OPTIONS: 1293 /* Save options for use by IP. */ 1294 mutex_enter(&connp->conn_lock); 1295 error = optcom_pkt_set(invalp, inlen, 1296 (uchar_t **)&ipp->ipp_ipv4_options, 1297 &ipp->ipp_ipv4_options_len); 1298 if (error != 0) { 1299 mutex_exit(&connp->conn_lock); 1300 return (error); 1301 } 1302 if (ipp->ipp_ipv4_options_len == 0) { 1303 ipp->ipp_fields &= ~IPPF_IPV4_OPTIONS; 1304 } else { 1305 ipp->ipp_fields |= IPPF_IPV4_OPTIONS; 1306 } 1307 mutex_exit(&connp->conn_lock); 1308 coa->coa_changed |= COA_HEADER_CHANGED; 1309 coa->coa_changed |= COA_WROFF_CHANGED; 1310 break; 1311 1312 case IP_TTL: 1313 mutex_enter(&connp->conn_lock); 1314 ipp->ipp_unicast_hops = *i1; 1315 mutex_exit(&connp->conn_lock); 1316 coa->coa_changed |= COA_HEADER_CHANGED; 1317 break; 1318 case IP_TOS: 1319 case T_IP_TOS: 1320 mutex_enter(&connp->conn_lock); 1321 if (*i1 == -1) { 1322 ipp->ipp_type_of_service = 0; 1323 } else { 1324 ipp->ipp_type_of_service = *i1; 1325 } 1326 mutex_exit(&connp->conn_lock); 1327 coa->coa_changed |= COA_HEADER_CHANGED; 1328 break; 1329 case IP_MULTICAST_IF: 1330 ixa->ixa_multicast_ifindex = ifindex; 1331 ixa->ixa_multicast_ifaddr = addr; 1332 coa->coa_changed |= COA_ROUTE_CHANGED; 1333 break; 1334 case IP_MULTICAST_TTL: 1335 ixa->ixa_multicast_ttl = *invalp; 1336 /* Handled automatically by ip_output */ 1337 break; 1338 case IP_MULTICAST_LOOP: 1339 if (*invalp != 0) 1340 ixa->ixa_flags |= IXAF_MULTICAST_LOOP; 1341 else 1342 ixa->ixa_flags &= ~IXAF_MULTICAST_LOOP; 1343 /* Handled automatically by ip_output */ 1344 break; 1345 case IP_RECVOPTS: 1346 mutex_enter(&connp->conn_lock); 1347 connp->conn_recv_ancillary.crb_recvopts = onoff; 1348 mutex_exit(&connp->conn_lock); 1349 break; 1350 case IP_RECVDSTADDR: 1351 mutex_enter(&connp->conn_lock); 1352 connp->conn_recv_ancillary.crb_recvdstaddr = onoff; 1353 mutex_exit(&connp->conn_lock); 1354 break; 1355 case IP_RECVIF: 1356 mutex_enter(&connp->conn_lock); 1357 connp->conn_recv_ancillary.crb_recvif = onoff; 1358 mutex_exit(&connp->conn_lock); 1359 break; 1360 case IP_RECVSLLA: 1361 mutex_enter(&connp->conn_lock); 1362 connp->conn_recv_ancillary.crb_recvslla = onoff; 1363 mutex_exit(&connp->conn_lock); 1364 break; 1365 case IP_RECVTTL: 1366 mutex_enter(&connp->conn_lock); 1367 connp->conn_recv_ancillary.crb_recvttl = onoff; 1368 mutex_exit(&connp->conn_lock); 1369 break; 1370 case IP_PKTINFO: { 1371 /* 1372 * This also handles IP_RECVPKTINFO. 1373 * IP_PKTINFO and IP_RECVPKTINFO have same value. 1374 * Differentiation is based on the size of the 1375 * argument passed in. 1376 */ 1377 struct in_pktinfo *pktinfo; 1378 1379 if (inlen == sizeof (int)) { 1380 /* This is IP_RECVPKTINFO option. */ 1381 mutex_enter(&connp->conn_lock); 1382 connp->conn_recv_ancillary.crb_ip_recvpktinfo = 1383 onoff; 1384 mutex_exit(&connp->conn_lock); 1385 break; 1386 } 1387 1388 /* This is IP_PKTINFO option. */ 1389 mutex_enter(&connp->conn_lock); 1390 pktinfo = (struct in_pktinfo *)invalp; 1391 if (ipp->ipp_addr_v4 != INADDR_ANY) { 1392 ipp->ipp_fields |= IPPF_ADDR; 1393 IN6_INADDR_TO_V4MAPPED(&pktinfo->ipi_spec_dst, 1394 &ipp->ipp_addr); 1395 } else { 1396 ipp->ipp_fields &= ~IPPF_ADDR; 1397 ipp->ipp_addr = ipv6_all_zeros; 1398 } 1399 mutex_exit(&connp->conn_lock); 1400 ixa->ixa_ifindex = pktinfo->ipi_ifindex; 1401 coa->coa_changed |= COA_ROUTE_CHANGED; 1402 coa->coa_changed |= COA_HEADER_CHANGED; 1403 break; 1404 } 1405 case IP_DONTFRAG: 1406 if (onoff) { 1407 ixa->ixa_flags |= (IXAF_DONTFRAG | IXAF_PMTU_IPV4_DF); 1408 ixa->ixa_flags &= ~IXAF_PMTU_DISCOVERY; 1409 } else { 1410 ixa->ixa_flags &= ~(IXAF_DONTFRAG | IXAF_PMTU_IPV4_DF); 1411 ixa->ixa_flags |= IXAF_PMTU_DISCOVERY; 1412 } 1413 /* Need to redo ip_attr_connect */ 1414 coa->coa_changed |= COA_ROUTE_CHANGED; 1415 break; 1416 case IP_ADD_MEMBERSHIP: 1417 case IP_DROP_MEMBERSHIP: 1418 case MCAST_JOIN_GROUP: 1419 case MCAST_LEAVE_GROUP: 1420 return (ip_opt_set_multicast_group(connp, name, 1421 invalp, B_FALSE, checkonly)); 1422 1423 case IP_BLOCK_SOURCE: 1424 case IP_UNBLOCK_SOURCE: 1425 case IP_ADD_SOURCE_MEMBERSHIP: 1426 case IP_DROP_SOURCE_MEMBERSHIP: 1427 case MCAST_BLOCK_SOURCE: 1428 case MCAST_UNBLOCK_SOURCE: 1429 case MCAST_JOIN_SOURCE_GROUP: 1430 case MCAST_LEAVE_SOURCE_GROUP: 1431 return (ip_opt_set_multicast_sources(connp, name, 1432 invalp, B_FALSE, checkonly)); 1433 1434 case IP_SEC_OPT: 1435 mutex_enter(&connp->conn_lock); 1436 error = ipsec_set_req(cr, connp, (ipsec_req_t *)invalp); 1437 mutex_exit(&connp->conn_lock); 1438 if (error != 0) { 1439 return (error); 1440 } 1441 /* This is an IPsec policy change - redo ip_attr_connect */ 1442 coa->coa_changed |= COA_ROUTE_CHANGED; 1443 break; 1444 case IP_NEXTHOP: 1445 ixa->ixa_nexthop_v4 = addr; 1446 if (addr != INADDR_ANY) 1447 ixa->ixa_flags |= IXAF_NEXTHOP_SET; 1448 else 1449 ixa->ixa_flags &= ~IXAF_NEXTHOP_SET; 1450 coa->coa_changed |= COA_ROUTE_CHANGED; 1451 break; 1452 1453 case IP_BOUND_IF: 1454 ixa->ixa_ifindex = ifindex; /* Send */ 1455 mutex_enter(&connp->conn_lock); 1456 connp->conn_incoming_ifindex = ifindex; /* Receive */ 1457 connp->conn_bound_if = ifindex; /* getsockopt */ 1458 mutex_exit(&connp->conn_lock); 1459 coa->coa_changed |= COA_ROUTE_CHANGED; 1460 break; 1461 case IP_UNSPEC_SRC: 1462 mutex_enter(&connp->conn_lock); 1463 connp->conn_unspec_src = onoff; 1464 if (onoff) 1465 ixa->ixa_flags &= ~IXAF_VERIFY_SOURCE; 1466 else 1467 ixa->ixa_flags |= IXAF_VERIFY_SOURCE; 1468 1469 mutex_exit(&connp->conn_lock); 1470 break; 1471 case IP_BROADCAST_TTL: 1472 ixa->ixa_broadcast_ttl = *invalp; 1473 ixa->ixa_flags |= IXAF_BROADCAST_TTL_SET; 1474 /* Handled automatically by ip_output */ 1475 break; 1476 case MRT_INIT: 1477 case MRT_DONE: 1478 case MRT_ADD_VIF: 1479 case MRT_DEL_VIF: 1480 case MRT_ADD_MFC: 1481 case MRT_DEL_MFC: 1482 case MRT_ASSERT: 1483 if ((error = secpolicy_ip_config(cr, B_FALSE)) != 0) { 1484 return (error); 1485 } 1486 error = ip_mrouter_set((int)name, connp, checkonly, 1487 (uchar_t *)invalp, inlen); 1488 if (error) { 1489 return (error); 1490 } 1491 return (0); 1492 1493 } 1494 return (0); 1495 } 1496 1497 /* Handle IPPROTO_IPV6 */ 1498 static int 1499 conn_opt_set_ipv6(conn_opt_arg_t *coa, t_scalar_t name, uint_t inlen, 1500 uchar_t *invalp, boolean_t checkonly, cred_t *cr) 1501 { 1502 conn_t *connp = coa->coa_connp; 1503 ip_xmit_attr_t *ixa = coa->coa_ixa; 1504 ip_pkt_t *ipp = coa->coa_ipp; 1505 int *i1 = (int *)invalp; 1506 boolean_t onoff = (*i1 == 0) ? 0 : 1; 1507 uint_t ifindex; 1508 zoneid_t zoneid = IPCL_ZONEID(connp); 1509 ip_stack_t *ipst = connp->conn_netstack->netstack_ip; 1510 int error; 1511 1512 if (connp->conn_family != AF_INET6) 1513 return (EINVAL); 1514 1515 switch (name) { 1516 case IPV6_MULTICAST_IF: 1517 /* 1518 * The only possible error is EINVAL. 1519 * We call this option on both V4 and V6 1520 * If both fail, then this call returns 1521 * EINVAL. If at least one of them succeeds we 1522 * return success. 1523 */ 1524 ifindex = *(uint_t *)i1; 1525 1526 if (!ip_ifindex_valid(ifindex, B_TRUE, ipst) && 1527 !ip_ifindex_valid(ifindex, B_FALSE, ipst)) 1528 return (EINVAL); 1529 break; 1530 case IPV6_UNICAST_HOPS: 1531 /* Don't allow zero. -1 means to use default */ 1532 if (*i1 < -1 || *i1 == 0 || *i1 > IPV6_MAX_HOPS) 1533 return (EINVAL); 1534 break; 1535 case IPV6_MULTICAST_HOPS: 1536 /* -1 means use default */ 1537 if (*i1 < -1 || *i1 > IPV6_MAX_HOPS) 1538 return (EINVAL); 1539 break; 1540 case IPV6_MULTICAST_LOOP: 1541 if (*i1 != 0 && *i1 != 1) 1542 return (EINVAL); 1543 break; 1544 case IPV6_BOUND_IF: 1545 ifindex = *(uint_t *)i1; 1546 1547 if (!ip_ifindex_valid(ifindex, B_TRUE, ipst)) 1548 return (ENXIO); 1549 break; 1550 case IPV6_PKTINFO: { 1551 struct in6_pktinfo *pkti; 1552 boolean_t isv6; 1553 1554 if (inlen != 0 && inlen != sizeof (struct in6_pktinfo)) 1555 return (EINVAL); 1556 if (inlen == 0) 1557 break; /* Clear values below */ 1558 1559 /* 1560 * Verify the source address and ifindex. Privileged users 1561 * can use any source address. 1562 */ 1563 pkti = (struct in6_pktinfo *)invalp; 1564 1565 /* 1566 * For link-local addresses we use the ipi6_ifindex when 1567 * we verify the local address. 1568 * If net_rawaccess then any source address can be used. 1569 */ 1570 if (!IN6_IS_ADDR_UNSPECIFIED(&pkti->ipi6_addr) && 1571 secpolicy_net_rawaccess(cr) != 0) { 1572 uint_t scopeid = 0; 1573 in6_addr_t *v6src = &pkti->ipi6_addr; 1574 ipaddr_t v4src; 1575 ip_laddr_t laddr_type = IPVL_UNICAST_UP; 1576 1577 if (IN6_IS_ADDR_V4MAPPED(v6src)) { 1578 IN6_V4MAPPED_TO_IPADDR(v6src, v4src); 1579 if (v4src != INADDR_ANY) { 1580 laddr_type = ip_laddr_verify_v4(v4src, 1581 zoneid, ipst, B_FALSE); 1582 } 1583 } else { 1584 if (IN6_IS_ADDR_LINKSCOPE(v6src)) 1585 scopeid = pkti->ipi6_ifindex; 1586 1587 laddr_type = ip_laddr_verify_v6(v6src, zoneid, 1588 ipst, B_FALSE, scopeid); 1589 } 1590 switch (laddr_type) { 1591 case IPVL_UNICAST_UP: 1592 case IPVL_UNICAST_DOWN: 1593 break; 1594 default: 1595 return (EADDRNOTAVAIL); 1596 } 1597 ixa->ixa_flags |= IXAF_VERIFY_SOURCE; 1598 } else if (!IN6_IS_ADDR_UNSPECIFIED(&pkti->ipi6_addr)) { 1599 /* Allow any source */ 1600 ixa->ixa_flags &= ~IXAF_VERIFY_SOURCE; 1601 } 1602 isv6 = !(IN6_IS_ADDR_V4MAPPED(&pkti->ipi6_addr)); 1603 if (!ip_ifindex_valid(pkti->ipi6_ifindex, isv6, ipst)) 1604 return (ENXIO); 1605 break; 1606 } 1607 case IPV6_HOPLIMIT: 1608 /* It is only allowed as ancilary data */ 1609 if (!coa->coa_ancillary) 1610 return (EINVAL); 1611 1612 if (inlen != 0 && inlen != sizeof (int)) 1613 return (EINVAL); 1614 if (inlen == sizeof (int)) { 1615 if (*i1 > 255 || *i1 < -1 || *i1 == 0) 1616 return (EINVAL); 1617 } 1618 break; 1619 case IPV6_TCLASS: 1620 if (inlen != 0 && inlen != sizeof (int)) 1621 return (EINVAL); 1622 if (inlen == sizeof (int)) { 1623 if (*i1 > 255 || *i1 < -1) 1624 return (EINVAL); 1625 } 1626 break; 1627 case IPV6_NEXTHOP: 1628 if (inlen != 0 && inlen != sizeof (sin6_t)) 1629 return (EINVAL); 1630 if (inlen == sizeof (sin6_t)) { 1631 sin6_t *sin6 = (sin6_t *)invalp; 1632 ire_t *ire; 1633 1634 if (sin6->sin6_family != AF_INET6) 1635 return (EAFNOSUPPORT); 1636 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) 1637 return (EADDRNOTAVAIL); 1638 1639 /* Verify that the next-hop is on-link */ 1640 ire = ire_ftable_lookup_v6(&sin6->sin6_addr, 1641 0, 0, IRE_ONLINK, NULL, zoneid, 1642 NULL, MATCH_IRE_TYPE, 0, ipst, NULL); 1643 if (ire == NULL) 1644 return (EHOSTUNREACH); 1645 ire_refrele(ire); 1646 break; 1647 } 1648 break; 1649 case IPV6_RTHDR: 1650 case IPV6_DSTOPTS: 1651 case IPV6_RTHDRDSTOPTS: 1652 case IPV6_HOPOPTS: { 1653 /* All have the length field in the same place */ 1654 ip6_hbh_t *hopts = (ip6_hbh_t *)invalp; 1655 /* 1656 * Sanity checks - minimum size, size a multiple of 1657 * eight bytes, and matching size passed in. 1658 */ 1659 if (inlen != 0 && 1660 inlen != (8 * (hopts->ip6h_len + 1))) 1661 return (EINVAL); 1662 break; 1663 } 1664 case IPV6_PATHMTU: 1665 /* Can't be set */ 1666 return (EINVAL); 1667 1668 case IPV6_USE_MIN_MTU: 1669 if (inlen != sizeof (int)) 1670 return (EINVAL); 1671 if (*i1 < -1 || *i1 > 1) 1672 return (EINVAL); 1673 break; 1674 case IPV6_SRC_PREFERENCES: 1675 if (inlen != sizeof (uint32_t)) 1676 return (EINVAL); 1677 break; 1678 case IPV6_V6ONLY: 1679 if (*i1 < 0 || *i1 > 1) { 1680 return (EINVAL); 1681 } 1682 break; 1683 } 1684 if (checkonly) 1685 return (0); 1686 1687 /* Here we set the actual option value */ 1688 /* 1689 * conn_lock protects the bitfields, and is used to 1690 * set the fields atomically. Not needed for ixa settings since 1691 * the caller has an exclusive copy of the ixa. 1692 * We can not hold conn_lock across the multicast options though. 1693 */ 1694 ASSERT(MUTEX_NOT_HELD(&coa->coa_connp->conn_lock)); 1695 switch (name) { 1696 case IPV6_MULTICAST_IF: 1697 ixa->ixa_multicast_ifindex = ifindex; 1698 /* Need to redo ip_attr_connect */ 1699 coa->coa_changed |= COA_ROUTE_CHANGED; 1700 break; 1701 case IPV6_UNICAST_HOPS: 1702 /* -1 means use default */ 1703 mutex_enter(&connp->conn_lock); 1704 if (*i1 == -1) { 1705 ipp->ipp_unicast_hops = connp->conn_default_ttl; 1706 } else { 1707 ipp->ipp_unicast_hops = (uint8_t)*i1; 1708 } 1709 mutex_exit(&connp->conn_lock); 1710 coa->coa_changed |= COA_HEADER_CHANGED; 1711 break; 1712 case IPV6_MULTICAST_HOPS: 1713 /* -1 means use default */ 1714 if (*i1 == -1) { 1715 ixa->ixa_multicast_ttl = IP_DEFAULT_MULTICAST_TTL; 1716 } else { 1717 ixa->ixa_multicast_ttl = (uint8_t)*i1; 1718 } 1719 /* Handled automatically by ip_output */ 1720 break; 1721 case IPV6_MULTICAST_LOOP: 1722 if (*i1 != 0) 1723 ixa->ixa_flags |= IXAF_MULTICAST_LOOP; 1724 else 1725 ixa->ixa_flags &= ~IXAF_MULTICAST_LOOP; 1726 /* Handled automatically by ip_output */ 1727 break; 1728 case IPV6_JOIN_GROUP: 1729 case IPV6_LEAVE_GROUP: 1730 case MCAST_JOIN_GROUP: 1731 case MCAST_LEAVE_GROUP: 1732 return (ip_opt_set_multicast_group(connp, name, 1733 invalp, B_TRUE, checkonly)); 1734 1735 case MCAST_BLOCK_SOURCE: 1736 case MCAST_UNBLOCK_SOURCE: 1737 case MCAST_JOIN_SOURCE_GROUP: 1738 case MCAST_LEAVE_SOURCE_GROUP: 1739 return (ip_opt_set_multicast_sources(connp, name, 1740 invalp, B_TRUE, checkonly)); 1741 1742 case IPV6_BOUND_IF: 1743 ixa->ixa_ifindex = ifindex; /* Send */ 1744 mutex_enter(&connp->conn_lock); 1745 connp->conn_incoming_ifindex = ifindex; /* Receive */ 1746 connp->conn_bound_if = ifindex; /* getsockopt */ 1747 mutex_exit(&connp->conn_lock); 1748 coa->coa_changed |= COA_ROUTE_CHANGED; 1749 break; 1750 case IPV6_UNSPEC_SRC: 1751 mutex_enter(&connp->conn_lock); 1752 connp->conn_unspec_src = onoff; 1753 if (onoff) 1754 ixa->ixa_flags &= ~IXAF_VERIFY_SOURCE; 1755 else 1756 ixa->ixa_flags |= IXAF_VERIFY_SOURCE; 1757 mutex_exit(&connp->conn_lock); 1758 break; 1759 case IPV6_RECVPKTINFO: 1760 mutex_enter(&connp->conn_lock); 1761 connp->conn_recv_ancillary.crb_ip_recvpktinfo = onoff; 1762 mutex_exit(&connp->conn_lock); 1763 break; 1764 case IPV6_RECVTCLASS: 1765 mutex_enter(&connp->conn_lock); 1766 connp->conn_recv_ancillary.crb_ipv6_recvtclass = onoff; 1767 mutex_exit(&connp->conn_lock); 1768 break; 1769 case IPV6_RECVPATHMTU: 1770 mutex_enter(&connp->conn_lock); 1771 connp->conn_ipv6_recvpathmtu = onoff; 1772 mutex_exit(&connp->conn_lock); 1773 break; 1774 case IPV6_RECVHOPLIMIT: 1775 mutex_enter(&connp->conn_lock); 1776 connp->conn_recv_ancillary.crb_ipv6_recvhoplimit = 1777 onoff; 1778 mutex_exit(&connp->conn_lock); 1779 break; 1780 case IPV6_RECVHOPOPTS: 1781 mutex_enter(&connp->conn_lock); 1782 connp->conn_recv_ancillary.crb_ipv6_recvhopopts = onoff; 1783 mutex_exit(&connp->conn_lock); 1784 break; 1785 case IPV6_RECVDSTOPTS: 1786 mutex_enter(&connp->conn_lock); 1787 connp->conn_recv_ancillary.crb_ipv6_recvdstopts = onoff; 1788 mutex_exit(&connp->conn_lock); 1789 break; 1790 case _OLD_IPV6_RECVDSTOPTS: 1791 mutex_enter(&connp->conn_lock); 1792 connp->conn_recv_ancillary.crb_old_ipv6_recvdstopts = 1793 onoff; 1794 mutex_exit(&connp->conn_lock); 1795 break; 1796 case IPV6_RECVRTHDRDSTOPTS: 1797 mutex_enter(&connp->conn_lock); 1798 connp->conn_recv_ancillary.crb_ipv6_recvrthdrdstopts = 1799 onoff; 1800 mutex_exit(&connp->conn_lock); 1801 break; 1802 case IPV6_RECVRTHDR: 1803 mutex_enter(&connp->conn_lock); 1804 connp->conn_recv_ancillary.crb_ipv6_recvrthdr = onoff; 1805 mutex_exit(&connp->conn_lock); 1806 break; 1807 case IPV6_PKTINFO: 1808 mutex_enter(&connp->conn_lock); 1809 if (inlen == 0) { 1810 ipp->ipp_fields &= ~IPPF_ADDR; 1811 ipp->ipp_addr = ipv6_all_zeros; 1812 ixa->ixa_ifindex = 0; 1813 } else { 1814 struct in6_pktinfo *pkti; 1815 1816 pkti = (struct in6_pktinfo *)invalp; 1817 ipp->ipp_addr = pkti->ipi6_addr; 1818 if (!IN6_IS_ADDR_UNSPECIFIED(&ipp->ipp_addr)) 1819 ipp->ipp_fields |= IPPF_ADDR; 1820 else 1821 ipp->ipp_fields &= ~IPPF_ADDR; 1822 ixa->ixa_ifindex = pkti->ipi6_ifindex; 1823 } 1824 mutex_exit(&connp->conn_lock); 1825 /* Source and ifindex might have changed */ 1826 coa->coa_changed |= COA_HEADER_CHANGED; 1827 coa->coa_changed |= COA_ROUTE_CHANGED; 1828 break; 1829 case IPV6_HOPLIMIT: 1830 mutex_enter(&connp->conn_lock); 1831 if (inlen == 0 || *i1 == -1) { 1832 /* Revert to default */ 1833 ipp->ipp_fields &= ~IPPF_HOPLIMIT; 1834 ixa->ixa_flags &= ~IXAF_NO_TTL_CHANGE; 1835 } else { 1836 ipp->ipp_hoplimit = *i1; 1837 ipp->ipp_fields |= IPPF_HOPLIMIT; 1838 /* Ensure that it sticks for multicast packets */ 1839 ixa->ixa_flags |= IXAF_NO_TTL_CHANGE; 1840 } 1841 mutex_exit(&connp->conn_lock); 1842 coa->coa_changed |= COA_HEADER_CHANGED; 1843 break; 1844 case IPV6_TCLASS: 1845 /* 1846 * IPV6_TCLASS accepts -1 as use kernel default 1847 * and [0, 255] as the actualy traffic class. 1848 */ 1849 mutex_enter(&connp->conn_lock); 1850 if (inlen == 0 || *i1 == -1) { 1851 ipp->ipp_tclass = 0; 1852 ipp->ipp_fields &= ~IPPF_TCLASS; 1853 } else { 1854 ipp->ipp_tclass = *i1; 1855 ipp->ipp_fields |= IPPF_TCLASS; 1856 } 1857 mutex_exit(&connp->conn_lock); 1858 coa->coa_changed |= COA_HEADER_CHANGED; 1859 break; 1860 case IPV6_NEXTHOP: 1861 if (inlen == 0) { 1862 ixa->ixa_flags &= ~IXAF_NEXTHOP_SET; 1863 } else { 1864 sin6_t *sin6 = (sin6_t *)invalp; 1865 1866 ixa->ixa_nexthop_v6 = sin6->sin6_addr; 1867 if (!IN6_IS_ADDR_UNSPECIFIED(&ixa->ixa_nexthop_v6)) 1868 ixa->ixa_flags |= IXAF_NEXTHOP_SET; 1869 else 1870 ixa->ixa_flags &= ~IXAF_NEXTHOP_SET; 1871 } 1872 coa->coa_changed |= COA_ROUTE_CHANGED; 1873 break; 1874 case IPV6_HOPOPTS: 1875 mutex_enter(&connp->conn_lock); 1876 error = optcom_pkt_set(invalp, inlen, 1877 (uchar_t **)&ipp->ipp_hopopts, &ipp->ipp_hopoptslen); 1878 if (error != 0) { 1879 mutex_exit(&connp->conn_lock); 1880 return (error); 1881 } 1882 if (ipp->ipp_hopoptslen == 0) { 1883 ipp->ipp_fields &= ~IPPF_HOPOPTS; 1884 } else { 1885 ipp->ipp_fields |= IPPF_HOPOPTS; 1886 } 1887 mutex_exit(&connp->conn_lock); 1888 coa->coa_changed |= COA_HEADER_CHANGED; 1889 coa->coa_changed |= COA_WROFF_CHANGED; 1890 break; 1891 case IPV6_RTHDRDSTOPTS: 1892 mutex_enter(&connp->conn_lock); 1893 error = optcom_pkt_set(invalp, inlen, 1894 (uchar_t **)&ipp->ipp_rthdrdstopts, 1895 &ipp->ipp_rthdrdstoptslen); 1896 if (error != 0) { 1897 mutex_exit(&connp->conn_lock); 1898 return (error); 1899 } 1900 if (ipp->ipp_rthdrdstoptslen == 0) { 1901 ipp->ipp_fields &= ~IPPF_RTHDRDSTOPTS; 1902 } else { 1903 ipp->ipp_fields |= IPPF_RTHDRDSTOPTS; 1904 } 1905 mutex_exit(&connp->conn_lock); 1906 coa->coa_changed |= COA_HEADER_CHANGED; 1907 coa->coa_changed |= COA_WROFF_CHANGED; 1908 break; 1909 case IPV6_DSTOPTS: 1910 mutex_enter(&connp->conn_lock); 1911 error = optcom_pkt_set(invalp, inlen, 1912 (uchar_t **)&ipp->ipp_dstopts, &ipp->ipp_dstoptslen); 1913 if (error != 0) { 1914 mutex_exit(&connp->conn_lock); 1915 return (error); 1916 } 1917 if (ipp->ipp_dstoptslen == 0) { 1918 ipp->ipp_fields &= ~IPPF_DSTOPTS; 1919 } else { 1920 ipp->ipp_fields |= IPPF_DSTOPTS; 1921 } 1922 mutex_exit(&connp->conn_lock); 1923 coa->coa_changed |= COA_HEADER_CHANGED; 1924 coa->coa_changed |= COA_WROFF_CHANGED; 1925 break; 1926 case IPV6_RTHDR: 1927 mutex_enter(&connp->conn_lock); 1928 error = optcom_pkt_set(invalp, inlen, 1929 (uchar_t **)&ipp->ipp_rthdr, &ipp->ipp_rthdrlen); 1930 if (error != 0) { 1931 mutex_exit(&connp->conn_lock); 1932 return (error); 1933 } 1934 if (ipp->ipp_rthdrlen == 0) { 1935 ipp->ipp_fields &= ~IPPF_RTHDR; 1936 } else { 1937 ipp->ipp_fields |= IPPF_RTHDR; 1938 } 1939 mutex_exit(&connp->conn_lock); 1940 coa->coa_changed |= COA_HEADER_CHANGED; 1941 coa->coa_changed |= COA_WROFF_CHANGED; 1942 break; 1943 1944 case IPV6_DONTFRAG: 1945 if (onoff) { 1946 ixa->ixa_flags |= IXAF_DONTFRAG; 1947 ixa->ixa_flags &= ~IXAF_PMTU_DISCOVERY; 1948 } else { 1949 ixa->ixa_flags &= ~IXAF_DONTFRAG; 1950 ixa->ixa_flags |= IXAF_PMTU_DISCOVERY; 1951 } 1952 /* Need to redo ip_attr_connect */ 1953 coa->coa_changed |= COA_ROUTE_CHANGED; 1954 break; 1955 1956 case IPV6_USE_MIN_MTU: 1957 ixa->ixa_flags |= IXAF_USE_MIN_MTU; 1958 ixa->ixa_use_min_mtu = *i1; 1959 /* Need to redo ip_attr_connect */ 1960 coa->coa_changed |= COA_ROUTE_CHANGED; 1961 break; 1962 1963 case IPV6_SEC_OPT: 1964 mutex_enter(&connp->conn_lock); 1965 error = ipsec_set_req(cr, connp, (ipsec_req_t *)invalp); 1966 mutex_exit(&connp->conn_lock); 1967 if (error != 0) { 1968 return (error); 1969 } 1970 /* This is an IPsec policy change - redo ip_attr_connect */ 1971 coa->coa_changed |= COA_ROUTE_CHANGED; 1972 break; 1973 case IPV6_SRC_PREFERENCES: 1974 /* 1975 * This socket option only affects connected 1976 * sockets that haven't already bound to a specific 1977 * IPv6 address. In other words, sockets that 1978 * don't call bind() with an address other than the 1979 * unspecified address and that call connect(). 1980 * ip_set_destination_v6() passes these preferences 1981 * to the ipif_select_source_v6() function. 1982 */ 1983 mutex_enter(&connp->conn_lock); 1984 error = ip6_set_src_preferences(ixa, *(uint32_t *)invalp); 1985 mutex_exit(&connp->conn_lock); 1986 if (error != 0) { 1987 return (error); 1988 } 1989 break; 1990 case IPV6_V6ONLY: 1991 mutex_enter(&connp->conn_lock); 1992 connp->conn_ipv6_v6only = onoff; 1993 mutex_exit(&connp->conn_lock); 1994 break; 1995 } 1996 return (0); 1997 } 1998 1999 /* Handle IPPROTO_UDP */ 2000 /* ARGSUSED1 */ 2001 static int 2002 conn_opt_set_udp(conn_opt_arg_t *coa, t_scalar_t name, uint_t inlen, 2003 uchar_t *invalp, boolean_t checkonly, cred_t *cr) 2004 { 2005 conn_t *connp = coa->coa_connp; 2006 int *i1 = (int *)invalp; 2007 boolean_t onoff = (*i1 == 0) ? 0 : 1; 2008 int error; 2009 2010 switch (name) { 2011 case UDP_ANONPRIVBIND: 2012 if ((error = secpolicy_net_privaddr(cr, 0, IPPROTO_UDP)) != 0) { 2013 return (error); 2014 } 2015 break; 2016 } 2017 if (checkonly) 2018 return (0); 2019 2020 /* Here we set the actual option value */ 2021 mutex_enter(&connp->conn_lock); 2022 switch (name) { 2023 case UDP_ANONPRIVBIND: 2024 connp->conn_anon_priv_bind = onoff; 2025 break; 2026 case UDP_EXCLBIND: 2027 connp->conn_exclbind = onoff; 2028 break; 2029 } 2030 mutex_exit(&connp->conn_lock); 2031 return (0); 2032 } 2033 2034 /* Handle IPPROTO_TCP */ 2035 /* ARGSUSED1 */ 2036 static int 2037 conn_opt_set_tcp(conn_opt_arg_t *coa, t_scalar_t name, uint_t inlen, 2038 uchar_t *invalp, boolean_t checkonly, cred_t *cr) 2039 { 2040 conn_t *connp = coa->coa_connp; 2041 int *i1 = (int *)invalp; 2042 boolean_t onoff = (*i1 == 0) ? 0 : 1; 2043 int error; 2044 2045 switch (name) { 2046 case TCP_ANONPRIVBIND: 2047 if ((error = secpolicy_net_privaddr(cr, 0, IPPROTO_TCP)) != 0) { 2048 return (error); 2049 } 2050 break; 2051 } 2052 if (checkonly) 2053 return (0); 2054 2055 /* Here we set the actual option value */ 2056 mutex_enter(&connp->conn_lock); 2057 switch (name) { 2058 case TCP_ANONPRIVBIND: 2059 connp->conn_anon_priv_bind = onoff; 2060 break; 2061 case TCP_EXCLBIND: 2062 connp->conn_exclbind = onoff; 2063 break; 2064 case TCP_RECVDSTADDR: 2065 connp->conn_recv_ancillary.crb_recvdstaddr = onoff; 2066 break; 2067 } 2068 mutex_exit(&connp->conn_lock); 2069 return (0); 2070 } 2071 2072 int 2073 conn_getsockname(conn_t *connp, struct sockaddr *sa, uint_t *salenp) 2074 { 2075 sin_t *sin; 2076 sin6_t *sin6; 2077 2078 if (connp->conn_family == AF_INET) { 2079 if (*salenp < sizeof (sin_t)) 2080 return (EINVAL); 2081 2082 *salenp = sizeof (sin_t); 2083 /* Fill zeroes and then initialize non-zero fields */ 2084 sin = (sin_t *)sa; 2085 *sin = sin_null; 2086 sin->sin_family = AF_INET; 2087 if (!IN6_IS_ADDR_V4MAPPED_ANY(&connp->conn_saddr_v6) && 2088 !IN6_IS_ADDR_UNSPECIFIED(&connp->conn_saddr_v6)) { 2089 sin->sin_addr.s_addr = connp->conn_saddr_v4; 2090 } else { 2091 /* 2092 * INADDR_ANY 2093 * conn_saddr is not set, we might be bound to 2094 * broadcast/multicast. Use conn_bound_addr as 2095 * local address instead (that could 2096 * also still be INADDR_ANY) 2097 */ 2098 sin->sin_addr.s_addr = connp->conn_bound_addr_v4; 2099 } 2100 sin->sin_port = connp->conn_lport; 2101 } else { 2102 if (*salenp < sizeof (sin6_t)) 2103 return (EINVAL); 2104 2105 *salenp = sizeof (sin6_t); 2106 /* Fill zeroes and then initialize non-zero fields */ 2107 sin6 = (sin6_t *)sa; 2108 *sin6 = sin6_null; 2109 sin6->sin6_family = AF_INET6; 2110 if (!IN6_IS_ADDR_UNSPECIFIED(&connp->conn_saddr_v6)) { 2111 sin6->sin6_addr = connp->conn_saddr_v6; 2112 } else { 2113 /* 2114 * conn_saddr is not set, we might be bound to 2115 * broadcast/multicast. Use conn_bound_addr as 2116 * local address instead (which could 2117 * also still be unspecified) 2118 */ 2119 sin6->sin6_addr = connp->conn_bound_addr_v6; 2120 } 2121 sin6->sin6_port = connp->conn_lport; 2122 if (IN6_IS_ADDR_LINKSCOPE(&sin6->sin6_addr) && 2123 (connp->conn_ixa->ixa_flags & IXAF_SCOPEID_SET)) 2124 sin6->sin6_scope_id = connp->conn_ixa->ixa_scopeid; 2125 } 2126 return (0); 2127 } 2128 2129 int 2130 conn_getpeername(conn_t *connp, struct sockaddr *sa, uint_t *salenp) 2131 { 2132 struct sockaddr_in *sin; 2133 struct sockaddr_in6 *sin6; 2134 2135 if (connp->conn_family == AF_INET) { 2136 if (*salenp < sizeof (sin_t)) 2137 return (EINVAL); 2138 2139 *salenp = sizeof (sin_t); 2140 /* initialize */ 2141 sin = (sin_t *)sa; 2142 *sin = sin_null; 2143 sin->sin_family = AF_INET; 2144 sin->sin_addr.s_addr = connp->conn_faddr_v4; 2145 sin->sin_port = connp->conn_fport; 2146 } else { 2147 if (*salenp < sizeof (sin6_t)) 2148 return (EINVAL); 2149 2150 *salenp = sizeof (sin6_t); 2151 /* initialize */ 2152 sin6 = (sin6_t *)sa; 2153 *sin6 = sin6_null; 2154 sin6->sin6_family = AF_INET6; 2155 sin6->sin6_addr = connp->conn_faddr_v6; 2156 sin6->sin6_port = connp->conn_fport; 2157 sin6->sin6_flowinfo = connp->conn_flowinfo; 2158 if (IN6_IS_ADDR_LINKSCOPE(&sin6->sin6_addr) && 2159 (connp->conn_ixa->ixa_flags & IXAF_SCOPEID_SET)) 2160 sin6->sin6_scope_id = connp->conn_ixa->ixa_scopeid; 2161 } 2162 return (0); 2163 } 2164 2165 static uint32_t cksum_massage_options_v4(ipha_t *, netstack_t *); 2166 static uint32_t cksum_massage_options_v6(ip6_t *, uint_t, netstack_t *); 2167 2168 /* 2169 * Allocate and fill in conn_ht_iphc based on the current information 2170 * in the conn. 2171 * Normally used when we bind() and connect(). 2172 * Returns failure if can't allocate memory, or if there is a problem 2173 * with a routing header/option. 2174 * 2175 * We allocate space for the transport header (ulp_hdr_len + extra) and 2176 * indicate the offset of the ulp header by setting ixa_ip_hdr_length. 2177 * The extra is there for transports that want some spare room for future 2178 * options. conn_ht_iphc_allocated is what was allocated; conn_ht_iphc_len 2179 * excludes the extra part. 2180 * 2181 * We massage an routing option/header and store the ckecksum difference 2182 * in conn_sum. 2183 * 2184 * Caller needs to update conn_wroff if desired. 2185 */ 2186 int 2187 conn_build_hdr_template(conn_t *connp, uint_t ulp_hdr_length, uint_t extra, 2188 const in6_addr_t *v6src, const in6_addr_t *v6dst, uint32_t flowinfo) 2189 { 2190 ip_xmit_attr_t *ixa = connp->conn_ixa; 2191 ip_pkt_t *ipp = &connp->conn_xmit_ipp; 2192 uint_t ip_hdr_length; 2193 uchar_t *hdrs; 2194 uint_t hdrs_len; 2195 2196 ASSERT(MUTEX_HELD(&connp->conn_lock)); 2197 2198 if (ixa->ixa_flags & IXAF_IS_IPV4) { 2199 ip_hdr_length = ip_total_hdrs_len_v4(ipp); 2200 /* In case of TX label and IP options it can be too much */ 2201 if (ip_hdr_length > IP_MAX_HDR_LENGTH) { 2202 /* Preserves existing TX errno for this */ 2203 return (EHOSTUNREACH); 2204 } 2205 } else { 2206 ip_hdr_length = ip_total_hdrs_len_v6(ipp); 2207 } 2208 ixa->ixa_ip_hdr_length = ip_hdr_length; 2209 hdrs_len = ip_hdr_length + ulp_hdr_length + extra; 2210 ASSERT(hdrs_len != 0); 2211 2212 if (hdrs_len != connp->conn_ht_iphc_allocated) { 2213 /* Allocate new before we free any old */ 2214 hdrs = kmem_alloc(hdrs_len, KM_NOSLEEP); 2215 if (hdrs == NULL) 2216 return (ENOMEM); 2217 2218 if (connp->conn_ht_iphc != NULL) { 2219 kmem_free(connp->conn_ht_iphc, 2220 connp->conn_ht_iphc_allocated); 2221 } 2222 connp->conn_ht_iphc = hdrs; 2223 connp->conn_ht_iphc_allocated = hdrs_len; 2224 } else { 2225 hdrs = connp->conn_ht_iphc; 2226 } 2227 hdrs_len -= extra; 2228 connp->conn_ht_iphc_len = hdrs_len; 2229 2230 connp->conn_ht_ulp = hdrs + ip_hdr_length; 2231 connp->conn_ht_ulp_len = ulp_hdr_length; 2232 2233 if (ixa->ixa_flags & IXAF_IS_IPV4) { 2234 ipha_t *ipha = (ipha_t *)hdrs; 2235 2236 IN6_V4MAPPED_TO_IPADDR(v6src, ipha->ipha_src); 2237 IN6_V4MAPPED_TO_IPADDR(v6dst, ipha->ipha_dst); 2238 ip_build_hdrs_v4(hdrs, ip_hdr_length, ipp, connp->conn_proto); 2239 ipha->ipha_length = htons(hdrs_len); 2240 if (ixa->ixa_flags & IXAF_PMTU_IPV4_DF) 2241 ipha->ipha_fragment_offset_and_flags |= IPH_DF_HTONS; 2242 else 2243 ipha->ipha_fragment_offset_and_flags &= ~IPH_DF_HTONS; 2244 2245 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) { 2246 connp->conn_sum = cksum_massage_options_v4(ipha, 2247 connp->conn_netstack); 2248 } else { 2249 connp->conn_sum = 0; 2250 } 2251 } else { 2252 ip6_t *ip6h = (ip6_t *)hdrs; 2253 2254 ip6h->ip6_src = *v6src; 2255 ip6h->ip6_dst = *v6dst; 2256 ip_build_hdrs_v6(hdrs, ip_hdr_length, ipp, connp->conn_proto, 2257 flowinfo); 2258 ip6h->ip6_plen = htons(hdrs_len - IPV6_HDR_LEN); 2259 2260 if (ipp->ipp_fields & IPPF_RTHDR) { 2261 connp->conn_sum = cksum_massage_options_v6(ip6h, 2262 ip_hdr_length, connp->conn_netstack); 2263 2264 /* 2265 * Verify that the first hop isn't a mapped address. 2266 * Routers along the path need to do this verification 2267 * for subsequent hops. 2268 */ 2269 if (IN6_IS_ADDR_V4MAPPED(&ip6h->ip6_dst)) 2270 return (EADDRNOTAVAIL); 2271 2272 } else { 2273 connp->conn_sum = 0; 2274 } 2275 } 2276 return (0); 2277 } 2278 2279 /* 2280 * Prepend a header template to data_mp based on the ip_pkt_t 2281 * and the passed in source, destination and protocol. 2282 * 2283 * Returns failure if can't allocate memory, in which case data_mp is freed. 2284 * We allocate space for the transport header (ulp_hdr_len) and 2285 * indicate the offset of the ulp header by setting ixa_ip_hdr_length. 2286 * 2287 * We massage an routing option/header and return the ckecksum difference 2288 * in *sump. This is in host byte order. 2289 * 2290 * Caller needs to update conn_wroff if desired. 2291 */ 2292 mblk_t * 2293 conn_prepend_hdr(ip_xmit_attr_t *ixa, const ip_pkt_t *ipp, 2294 const in6_addr_t *v6src, const in6_addr_t *v6dst, 2295 uint8_t protocol, uint32_t flowinfo, uint_t ulp_hdr_length, mblk_t *data_mp, 2296 uint_t data_length, uint_t wroff_extra, uint32_t *sump, int *errorp) 2297 { 2298 uint_t ip_hdr_length; 2299 uchar_t *hdrs; 2300 uint_t hdrs_len; 2301 mblk_t *mp; 2302 2303 if (ixa->ixa_flags & IXAF_IS_IPV4) { 2304 ip_hdr_length = ip_total_hdrs_len_v4(ipp); 2305 ASSERT(ip_hdr_length <= IP_MAX_HDR_LENGTH); 2306 } else { 2307 ip_hdr_length = ip_total_hdrs_len_v6(ipp); 2308 } 2309 hdrs_len = ip_hdr_length + ulp_hdr_length; 2310 ASSERT(hdrs_len != 0); 2311 2312 ixa->ixa_ip_hdr_length = ip_hdr_length; 2313 2314 /* Can we prepend to data_mp? */ 2315 if (data_mp != NULL && 2316 data_mp->b_rptr - data_mp->b_datap->db_base >= hdrs_len && 2317 data_mp->b_datap->db_ref == 1) { 2318 hdrs = data_mp->b_rptr - hdrs_len; 2319 data_mp->b_rptr = hdrs; 2320 mp = data_mp; 2321 } else { 2322 mp = allocb(hdrs_len + wroff_extra, BPRI_MED); 2323 if (mp == NULL) { 2324 freemsg(data_mp); 2325 *errorp = ENOMEM; 2326 return (NULL); 2327 } 2328 mp->b_wptr = mp->b_datap->db_lim; 2329 hdrs = mp->b_rptr = mp->b_wptr - hdrs_len; 2330 mp->b_cont = data_mp; 2331 } 2332 2333 /* 2334 * Set the source in the header. ip_build_hdrs_v4/v6 will overwrite it 2335 * if PKTINFO (aka IPPF_ADDR) was set. 2336 */ 2337 if (ixa->ixa_flags & IXAF_IS_IPV4) { 2338 ipha_t *ipha = (ipha_t *)hdrs; 2339 2340 ASSERT(IN6_IS_ADDR_V4MAPPED(v6dst)); 2341 IN6_V4MAPPED_TO_IPADDR(v6src, ipha->ipha_src); 2342 IN6_V4MAPPED_TO_IPADDR(v6dst, ipha->ipha_dst); 2343 ip_build_hdrs_v4(hdrs, ip_hdr_length, ipp, protocol); 2344 ipha->ipha_length = htons(hdrs_len + data_length); 2345 if (ixa->ixa_flags & IXAF_PMTU_IPV4_DF) 2346 ipha->ipha_fragment_offset_and_flags |= IPH_DF_HTONS; 2347 else 2348 ipha->ipha_fragment_offset_and_flags &= ~IPH_DF_HTONS; 2349 2350 if (ipp->ipp_fields & IPPF_IPV4_OPTIONS) { 2351 *sump = cksum_massage_options_v4(ipha, 2352 ixa->ixa_ipst->ips_netstack); 2353 } else { 2354 *sump = 0; 2355 } 2356 } else { 2357 ip6_t *ip6h = (ip6_t *)hdrs; 2358 2359 ip6h->ip6_src = *v6src; 2360 ip6h->ip6_dst = *v6dst; 2361 ip_build_hdrs_v6(hdrs, ip_hdr_length, ipp, protocol, flowinfo); 2362 ip6h->ip6_plen = htons(hdrs_len + data_length - IPV6_HDR_LEN); 2363 2364 if (ipp->ipp_fields & IPPF_RTHDR) { 2365 *sump = cksum_massage_options_v6(ip6h, 2366 ip_hdr_length, ixa->ixa_ipst->ips_netstack); 2367 2368 /* 2369 * Verify that the first hop isn't a mapped address. 2370 * Routers along the path need to do this verification 2371 * for subsequent hops. 2372 */ 2373 if (IN6_IS_ADDR_V4MAPPED(&ip6h->ip6_dst)) { 2374 *errorp = EADDRNOTAVAIL; 2375 freemsg(mp); 2376 return (NULL); 2377 } 2378 } else { 2379 *sump = 0; 2380 } 2381 } 2382 return (mp); 2383 } 2384 2385 /* 2386 * Massage a source route if any putting the first hop 2387 * in ipha_dst. Compute a starting value for the checksum which 2388 * takes into account that the original ipha_dst should be 2389 * included in the checksum but that IP will include the 2390 * first hop from the source route in the tcp checksum. 2391 */ 2392 static uint32_t 2393 cksum_massage_options_v4(ipha_t *ipha, netstack_t *ns) 2394 { 2395 in_addr_t dst; 2396 uint32_t cksum; 2397 2398 /* Get last hop then diff against first hop */ 2399 cksum = ip_massage_options(ipha, ns); 2400 cksum = (cksum & 0xFFFF) + (cksum >> 16); 2401 dst = ipha->ipha_dst; 2402 cksum -= ((dst >> 16) + (dst & 0xffff)); 2403 if ((int)cksum < 0) 2404 cksum--; 2405 cksum = (cksum & 0xFFFF) + (cksum >> 16); 2406 cksum = (cksum & 0xFFFF) + (cksum >> 16); 2407 ASSERT(cksum < 0x10000); 2408 return (ntohs(cksum)); 2409 } 2410 2411 static uint32_t 2412 cksum_massage_options_v6(ip6_t *ip6h, uint_t ip_hdr_len, netstack_t *ns) 2413 { 2414 uint8_t *end; 2415 ip6_rthdr_t *rth; 2416 uint32_t cksum; 2417 2418 end = (uint8_t *)ip6h + ip_hdr_len; 2419 rth = ip_find_rthdr_v6(ip6h, end); 2420 if (rth == NULL) 2421 return (0); 2422 2423 cksum = ip_massage_options_v6(ip6h, rth, ns); 2424 cksum = (cksum & 0xFFFF) + (cksum >> 16); 2425 ASSERT(cksum < 0x10000); 2426 return (ntohs(cksum)); 2427 } 2428 2429 /* 2430 * ULPs that change the destination address need to call this for each 2431 * change to discard any state about a previous destination that might 2432 * have been multicast or multirt. 2433 */ 2434 void 2435 ip_attr_newdst(ip_xmit_attr_t *ixa) 2436 { 2437 ixa->ixa_flags &= ~(IXAF_LOOPBACK_COPY | IXAF_NO_HW_CKSUM | 2438 IXAF_NO_TTL_CHANGE | IXAF_IPV6_ADD_FRAGHDR | 2439 IXAF_NO_LOOP_ZONEID_SET); 2440 } 2441 2442 /* 2443 * Determine the nexthop which will be used. 2444 * Normally this is just the destination, but if a IPv4 source route, or 2445 * IPv6 routing header, is in the ip_pkt_t then we extract the nexthop from 2446 * there. 2447 */ 2448 void 2449 ip_attr_nexthop(const ip_pkt_t *ipp, const ip_xmit_attr_t *ixa, 2450 const in6_addr_t *dst, in6_addr_t *nexthop) 2451 { 2452 if (!(ipp->ipp_fields & (IPPF_IPV4_OPTIONS|IPPF_RTHDR))) { 2453 *nexthop = *dst; 2454 return; 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 uint32_t xmit_hint; 2838 2839 econnp->conn_family = lconnp->conn_family; 2840 econnp->conn_ipv6_v6only = lconnp->conn_ipv6_v6only; 2841 econnp->conn_wq = lconnp->conn_wq; 2842 econnp->conn_rq = lconnp->conn_rq; 2843 2844 /* 2845 * Make a safe copy of the transmit attributes. 2846 * conn_connect will later be used by the caller to setup the ire etc. 2847 */ 2848 ASSERT(econnp->conn_ixa->ixa_refcnt == 1); 2849 ASSERT(econnp->conn_ixa->ixa_ire == NULL); 2850 ASSERT(econnp->conn_ixa->ixa_dce == NULL); 2851 ASSERT(econnp->conn_ixa->ixa_nce == NULL); 2852 2853 /* Preserve ixa_notify_cookie and xmit_hint */ 2854 notify_cookie = econnp->conn_ixa->ixa_notify_cookie; 2855 xmit_hint = econnp->conn_ixa->ixa_xmit_hint; 2856 ixa_safe_copy(lconnp->conn_ixa, econnp->conn_ixa); 2857 econnp->conn_ixa->ixa_notify_cookie = notify_cookie; 2858 econnp->conn_ixa->ixa_xmit_hint = xmit_hint; 2859 2860 econnp->conn_bound_if = lconnp->conn_bound_if; 2861 econnp->conn_incoming_ifindex = lconnp->conn_incoming_ifindex; 2862 2863 /* Inherit all RECV options */ 2864 econnp->conn_recv_ancillary = lconnp->conn_recv_ancillary; 2865 2866 err = ip_pkt_copy(&lconnp->conn_xmit_ipp, &econnp->conn_xmit_ipp, 2867 KM_NOSLEEP); 2868 if (err != 0) 2869 return (err); 2870 2871 econnp->conn_zoneid = lconnp->conn_zoneid; 2872 econnp->conn_allzones = lconnp->conn_allzones; 2873 2874 /* This is odd. Pick a flowlabel for each connection instead? */ 2875 econnp->conn_flowinfo = lconnp->conn_flowinfo; 2876 2877 econnp->conn_default_ttl = lconnp->conn_default_ttl; 2878 2879 /* 2880 * TSOL: tsol_input_proc() needs the eager's cred before the 2881 * eager is accepted 2882 */ 2883 ASSERT(lconnp->conn_cred != NULL); 2884 econnp->conn_cred = credp = lconnp->conn_cred; 2885 crhold(credp); 2886 econnp->conn_cpid = lconnp->conn_cpid; 2887 econnp->conn_open_time = ddi_get_lbolt64(); 2888 2889 /* 2890 * Cache things in the ixa without any refhold. 2891 * Listener might not have set up ixa_cred 2892 */ 2893 econnp->conn_ixa->ixa_cred = econnp->conn_cred; 2894 econnp->conn_ixa->ixa_cpid = econnp->conn_cpid; 2895 if (is_system_labeled()) 2896 econnp->conn_ixa->ixa_tsl = crgetlabel(econnp->conn_cred); 2897 2898 /* 2899 * If the caller has the process-wide flag set, then default to MAC 2900 * exempt mode. This allows read-down to unlabeled hosts. 2901 */ 2902 if (getpflags(NET_MAC_AWARE, credp) != 0) 2903 econnp->conn_mac_mode = CONN_MAC_AWARE; 2904 2905 econnp->conn_zone_is_global = lconnp->conn_zone_is_global; 2906 2907 /* 2908 * We eliminate the need for sockfs to send down a T_SVR4_OPTMGMT_REQ 2909 * via soaccept()->soinheritoptions() which essentially applies 2910 * all the listener options to the new connection. The options that we 2911 * need to take care of are: 2912 * SO_DEBUG, SO_REUSEADDR, SO_KEEPALIVE, SO_DONTROUTE, SO_BROADCAST, 2913 * SO_USELOOPBACK, SO_OOBINLINE, SO_DGRAM_ERRIND, SO_LINGER, 2914 * SO_SNDBUF, SO_RCVBUF. 2915 * 2916 * SO_RCVBUF: conn_rcvbuf is set. 2917 * SO_SNDBUF: conn_sndbuf is set. 2918 */ 2919 2920 /* Could we define a struct and use a struct copy for this? */ 2921 econnp->conn_sndbuf = lconnp->conn_sndbuf; 2922 econnp->conn_rcvbuf = lconnp->conn_rcvbuf; 2923 econnp->conn_sndlowat = lconnp->conn_sndlowat; 2924 econnp->conn_rcvlowat = lconnp->conn_rcvlowat; 2925 econnp->conn_dgram_errind = lconnp->conn_dgram_errind; 2926 econnp->conn_oobinline = lconnp->conn_oobinline; 2927 econnp->conn_debug = lconnp->conn_debug; 2928 econnp->conn_keepalive = lconnp->conn_keepalive; 2929 econnp->conn_linger = lconnp->conn_linger; 2930 econnp->conn_lingertime = lconnp->conn_lingertime; 2931 2932 /* Set the IP options */ 2933 econnp->conn_broadcast = lconnp->conn_broadcast; 2934 econnp->conn_useloopback = lconnp->conn_useloopback; 2935 econnp->conn_reuseaddr = lconnp->conn_reuseaddr; 2936 return (0); 2937 } 2938