sctp_asconf.c revision 169352
1163953Srrs/*- 2166675Srrs * Copyright (c) 2001-2007, Cisco Systems, Inc. All rights reserved. 3163953Srrs * 4163953Srrs * Redistribution and use in source and binary forms, with or without 5163953Srrs * modification, are permitted provided that the following conditions are met: 6163953Srrs * 7163953Srrs * a) Redistributions of source code must retain the above copyright notice, 8163953Srrs * this list of conditions and the following disclaimer. 9163953Srrs * 10163953Srrs * b) Redistributions in binary form must reproduce the above copyright 11163953Srrs * notice, this list of conditions and the following disclaimer in 12163953Srrs * the documentation and/or other materials provided with the distribution. 13163953Srrs * 14163953Srrs * c) Neither the name of Cisco Systems, Inc. nor the names of its 15163953Srrs * contributors may be used to endorse or promote products derived 16163953Srrs * from this software without specific prior written permission. 17163953Srrs * 18163953Srrs * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19163953Srrs * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20163953Srrs * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21163953Srrs * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 22163953Srrs * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23163953Srrs * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24163953Srrs * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25163953Srrs * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26163953Srrs * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27163953Srrs * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28163953Srrs * THE POSSIBILITY OF SUCH DAMAGE. 29163953Srrs */ 30163953Srrs 31163953Srrs/* $KAME: sctp_asconf.c,v 1.24 2005/03/06 16:04:16 itojun Exp $ */ 32163953Srrs 33163953Srrs#include <sys/cdefs.h> 34163957Srrs__FBSDID("$FreeBSD: head/sys/netinet/sctp_asconf.c 169352 2007-05-08 00:21:05Z rrs $"); 35163953Srrs#include <netinet/sctp_os.h> 36163953Srrs#include <netinet/sctp_var.h> 37167598Srrs#include <netinet/sctp_sysctl.h> 38163953Srrs#include <netinet/sctp_pcb.h> 39163953Srrs#include <netinet/sctp_header.h> 40163953Srrs#include <netinet/sctputil.h> 41163953Srrs#include <netinet/sctp_output.h> 42163953Srrs#include <netinet/sctp_asconf.h> 43163953Srrs 44163953Srrs/* 45163953Srrs * debug flags: 46163953Srrs * SCTP_DEBUG_ASCONF1: protocol info, general info and errors 47163953Srrs * SCTP_DEBUG_ASCONF2: detailed info 48163953Srrs */ 49163953Srrs#ifdef SCTP_DEBUG 50163953Srrs#endif /* SCTP_DEBUG */ 51163953Srrs 52163953Srrs 53163953Srrsstatic int 54163953Srrssctp_asconf_get_source_ip(struct mbuf *m, struct sockaddr *sa) 55163953Srrs{ 56163953Srrs struct ip *iph; 57163953Srrs struct sockaddr_in *sin; 58163953Srrs 59163953Srrs#ifdef INET6 60163953Srrs struct sockaddr_in6 *sin6; 61163953Srrs 62163953Srrs#endif 63163953Srrs 64163953Srrs iph = mtod(m, struct ip *); 65163953Srrs if (iph->ip_v == IPVERSION) { 66163953Srrs /* IPv4 source */ 67163953Srrs sin = (struct sockaddr_in *)sa; 68163953Srrs bzero(sin, sizeof(*sin)); 69163953Srrs sin->sin_family = AF_INET; 70163953Srrs sin->sin_len = sizeof(struct sockaddr_in); 71163953Srrs sin->sin_port = 0; 72163953Srrs sin->sin_addr.s_addr = iph->ip_src.s_addr; 73163953Srrs return 0; 74163953Srrs } 75163953Srrs#ifdef INET6 76163953Srrs else if (iph->ip_v == (IPV6_VERSION >> 4)) { 77163953Srrs /* IPv6 source */ 78163953Srrs struct ip6_hdr *ip6; 79163953Srrs 80163953Srrs sin6 = (struct sockaddr_in6 *)sa; 81163953Srrs bzero(sin6, sizeof(*sin6)); 82163953Srrs sin6->sin6_family = AF_INET6; 83163953Srrs sin6->sin6_len = sizeof(struct sockaddr_in6); 84163953Srrs sin6->sin6_port = 0; 85163953Srrs ip6 = mtod(m, struct ip6_hdr *); 86163953Srrs sin6->sin6_addr = ip6->ip6_src; 87163953Srrs return 0; 88163953Srrs } 89163953Srrs#endif /* INET6 */ 90163953Srrs else 91163953Srrs return -1; 92163953Srrs} 93163953Srrs 94163953Srrs/* 95163953Srrs * draft-ietf-tsvwg-addip-sctp 96163953Srrs * 97163953Srrs * Address management only currently supported For the bound all case: the asoc 98163953Srrs * local addr list is always a "DO NOT USE" list For the subset bound case: 99163953Srrs * If ASCONFs are allowed: the endpoint local addr list is the usable address 100163953Srrs * list the asoc local addr list is the "DO NOT USE" list If ASCONFs are not 101163953Srrs * allowed: the endpoint local addr list is the default usable list the asoc 102163953Srrs * local addr list is the usable address list 103163953Srrs * 104163953Srrs * An ASCONF parameter queue exists per asoc which holds the pending address 105163953Srrs * operations. Lists are updated upon receipt of ASCONF-ACK. 106163953Srrs * 107163953Srrs * Deleted addresses are always immediately removed from the lists as they will 108163953Srrs * (shortly) no longer exist in the kernel. We send ASCONFs as a courtesy, 109163953Srrs * only if allowed. 110163953Srrs */ 111163953Srrs 112163953Srrs/* 113163953Srrs * ASCONF parameter processing response_required: set if a reply is required 114163953Srrs * (eg. SUCCESS_REPORT) returns a mbuf to an "error" response parameter or 115163953Srrs * NULL/"success" if ok FIX: allocating this many mbufs on the fly is pretty 116163953Srrs * inefficient... 117163953Srrs */ 118163953Srrsstatic struct mbuf * 119163953Srrssctp_asconf_success_response(uint32_t id) 120163953Srrs{ 121163953Srrs struct mbuf *m_reply = NULL; 122163953Srrs struct sctp_asconf_paramhdr *aph; 123163953Srrs 124163953Srrs m_reply = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_paramhdr), 125163953Srrs 0, M_DONTWAIT, 1, MT_DATA); 126163953Srrs if (m_reply == NULL) { 127163953Srrs#ifdef SCTP_DEBUG 128163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 129163953Srrs printf("asconf_success_response: couldn't get mbuf!\n"); 130163953Srrs } 131163953Srrs#endif /* SCTP_DEBUG */ 132163953Srrs return NULL; 133163953Srrs } 134163953Srrs aph = mtod(m_reply, struct sctp_asconf_paramhdr *); 135163953Srrs aph->correlation_id = id; 136163953Srrs aph->ph.param_type = htons(SCTP_SUCCESS_REPORT); 137163953Srrs aph->ph.param_length = sizeof(struct sctp_asconf_paramhdr); 138165647Srrs SCTP_BUF_LEN(m_reply) = aph->ph.param_length; 139163953Srrs aph->ph.param_length = htons(aph->ph.param_length); 140163953Srrs 141163953Srrs return m_reply; 142163953Srrs} 143163953Srrs 144163953Srrsstatic struct mbuf * 145163953Srrssctp_asconf_error_response(uint32_t id, uint16_t cause, uint8_t * error_tlv, 146163953Srrs uint16_t tlv_length) 147163953Srrs{ 148163953Srrs struct mbuf *m_reply = NULL; 149163953Srrs struct sctp_asconf_paramhdr *aph; 150163953Srrs struct sctp_error_cause *error; 151163953Srrs uint8_t *tlv; 152163953Srrs 153163953Srrs m_reply = sctp_get_mbuf_for_msg((sizeof(struct sctp_asconf_paramhdr) + 154163953Srrs tlv_length + 155163953Srrs sizeof(struct sctp_error_cause)), 156163953Srrs 0, M_DONTWAIT, 1, MT_DATA); 157163953Srrs if (m_reply == NULL) { 158163953Srrs#ifdef SCTP_DEBUG 159163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 160163953Srrs printf("asconf_error_response: couldn't get mbuf!\n"); 161163953Srrs } 162163953Srrs#endif /* SCTP_DEBUG */ 163163953Srrs return NULL; 164163953Srrs } 165163953Srrs aph = mtod(m_reply, struct sctp_asconf_paramhdr *); 166163953Srrs error = (struct sctp_error_cause *)(aph + 1); 167163953Srrs 168163953Srrs aph->correlation_id = id; 169163953Srrs aph->ph.param_type = htons(SCTP_ERROR_CAUSE_IND); 170163953Srrs error->code = htons(cause); 171163953Srrs error->length = tlv_length + sizeof(struct sctp_error_cause); 172163953Srrs aph->ph.param_length = error->length + 173163953Srrs sizeof(struct sctp_asconf_paramhdr); 174163953Srrs 175163953Srrs if (aph->ph.param_length > MLEN) { 176163953Srrs#ifdef SCTP_DEBUG 177163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 178163953Srrs printf("asconf_error_response: tlv_length (%xh) too big\n", 179163953Srrs tlv_length); 180163953Srrs } 181163953Srrs#endif /* SCTP_DEBUG */ 182163953Srrs sctp_m_freem(m_reply); /* discard */ 183163953Srrs return NULL; 184163953Srrs } 185163953Srrs if (error_tlv != NULL) { 186163953Srrs tlv = (uint8_t *) (error + 1); 187163953Srrs memcpy(tlv, error_tlv, tlv_length); 188163953Srrs } 189165647Srrs SCTP_BUF_LEN(m_reply) = aph->ph.param_length; 190163953Srrs error->length = htons(error->length); 191163953Srrs aph->ph.param_length = htons(aph->ph.param_length); 192163953Srrs 193163953Srrs return m_reply; 194163953Srrs} 195163953Srrs 196163953Srrsstatic struct mbuf * 197163953Srrssctp_process_asconf_add_ip(struct mbuf *m, struct sctp_asconf_paramhdr *aph, 198163953Srrs struct sctp_tcb *stcb, int response_required) 199163953Srrs{ 200163953Srrs struct mbuf *m_reply = NULL; 201163953Srrs struct sockaddr_storage sa_source, sa_store; 202163953Srrs struct sctp_ipv4addr_param *v4addr; 203163953Srrs uint16_t param_type, param_length, aparam_length; 204163953Srrs struct sockaddr *sa; 205163953Srrs struct sockaddr_in *sin; 206163953Srrs int zero_address = 0; 207163953Srrs 208163953Srrs#ifdef INET6 209163953Srrs struct sockaddr_in6 *sin6; 210163953Srrs struct sctp_ipv6addr_param *v6addr; 211163953Srrs 212163953Srrs#endif /* INET6 */ 213163953Srrs 214163953Srrs aparam_length = ntohs(aph->ph.param_length); 215163953Srrs v4addr = (struct sctp_ipv4addr_param *)(aph + 1); 216163953Srrs#ifdef INET6 217163953Srrs v6addr = (struct sctp_ipv6addr_param *)(aph + 1); 218163953Srrs#endif /* INET6 */ 219163953Srrs param_type = ntohs(v4addr->ph.param_type); 220163953Srrs param_length = ntohs(v4addr->ph.param_length); 221163953Srrs 222163953Srrs sa = (struct sockaddr *)&sa_store; 223163953Srrs switch (param_type) { 224163953Srrs case SCTP_IPV4_ADDRESS: 225163953Srrs if (param_length != sizeof(struct sctp_ipv4addr_param)) { 226163953Srrs /* invalid param size */ 227163953Srrs return NULL; 228163953Srrs } 229163953Srrs sin = (struct sockaddr_in *)&sa_store; 230163953Srrs bzero(sin, sizeof(*sin)); 231163953Srrs sin->sin_family = AF_INET; 232163953Srrs sin->sin_len = sizeof(struct sockaddr_in); 233163953Srrs sin->sin_port = stcb->rport; 234163953Srrs sin->sin_addr.s_addr = v4addr->addr; 235163953Srrs if (sin->sin_addr.s_addr == INADDR_ANY) 236163953Srrs zero_address = 1; 237163953Srrs#ifdef SCTP_DEBUG 238163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 239163953Srrs printf("process_asconf_add_ip: adding "); 240163953Srrs sctp_print_address(sa); 241163953Srrs } 242163953Srrs#endif /* SCTP_DEBUG */ 243163953Srrs break; 244163953Srrs case SCTP_IPV6_ADDRESS: 245163953Srrs#ifdef INET6 246163953Srrs if (param_length != sizeof(struct sctp_ipv6addr_param)) { 247163953Srrs /* invalid param size */ 248163953Srrs return NULL; 249163953Srrs } 250163953Srrs sin6 = (struct sockaddr_in6 *)&sa_store; 251163953Srrs bzero(sin6, sizeof(*sin6)); 252163953Srrs sin6->sin6_family = AF_INET6; 253163953Srrs sin6->sin6_len = sizeof(struct sockaddr_in6); 254163953Srrs sin6->sin6_port = stcb->rport; 255163953Srrs memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr, 256163953Srrs sizeof(struct in6_addr)); 257163953Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 258163953Srrs zero_address = 1; 259163953Srrs#ifdef SCTP_DEBUG 260163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 261163953Srrs printf("process_asconf_add_ip: adding "); 262163953Srrs sctp_print_address(sa); 263163953Srrs } 264163953Srrs#endif /* SCTP_DEBUG */ 265163953Srrs#else 266163953Srrs /* IPv6 not enabled! */ 267163953Srrs /* FIX ME: currently sends back an invalid param error */ 268163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 269163953Srrs SCTP_CAUSE_INVALID_PARAM, (uint8_t *) aph, aparam_length); 270163953Srrs#ifdef SCTP_DEBUG 271163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 272163953Srrs printf("process_asconf_add_ip: v6 disabled- skipping "); 273163953Srrs sctp_print_address(sa); 274163953Srrs } 275163953Srrs#endif /* SCTP_DEBUG */ 276163953Srrs return m_reply; 277163953Srrs#endif /* INET6 */ 278163953Srrs break; 279163953Srrs default: 280163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 281163953Srrs SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph, 282163953Srrs aparam_length); 283163953Srrs return m_reply; 284163953Srrs } /* end switch */ 285163953Srrs 286163953Srrs /* if 0.0.0.0/::0, add the source address instead */ 287165647Srrs if (zero_address && sctp_nat_friendly) { 288163953Srrs sa = (struct sockaddr *)&sa_source; 289163953Srrs sctp_asconf_get_source_ip(m, sa); 290163953Srrs#ifdef SCTP_DEBUG 291163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 292163953Srrs printf("process_asconf_add_ip: using source addr "); 293163953Srrs sctp_print_address(sa); 294163953Srrs } 295163953Srrs#endif /* SCTP_DEBUG */ 296163953Srrs } 297163953Srrs /* add the address */ 298165220Srrs if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, 299165220Srrs SCTP_ADDR_DYNAMIC_ADDED) != 0) { 300163953Srrs#ifdef SCTP_DEBUG 301163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 302163953Srrs printf("process_asconf_add_ip: error adding address\n"); 303163953Srrs } 304163953Srrs#endif /* SCTP_DEBUG */ 305163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 306163953Srrs SCTP_CAUSE_RESOURCE_SHORTAGE, (uint8_t *) aph, 307163953Srrs aparam_length); 308163953Srrs } else { 309163953Srrs /* notify upper layer */ 310163953Srrs sctp_ulp_notify(SCTP_NOTIFY_ASCONF_ADD_IP, stcb, 0, sa); 311163953Srrs if (response_required) { 312163953Srrs m_reply = 313163953Srrs sctp_asconf_success_response(aph->correlation_id); 314163953Srrs } 315165220Srrs sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTP_ASCONF + SCTP_LOC_1); 316163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, NULL); 317163953Srrs } 318163953Srrs 319163953Srrs return m_reply; 320163953Srrs} 321163953Srrs 322163953Srrsstatic int 323163953Srrssctp_asconf_del_remote_addrs_except(struct sctp_tcb *stcb, 324163953Srrs struct sockaddr *src) 325163953Srrs{ 326163953Srrs struct sctp_nets *src_net, *net; 327163953Srrs 328163953Srrs /* make sure the source address exists as a destination net */ 329163953Srrs src_net = sctp_findnet(stcb, src); 330163953Srrs if (src_net == NULL) { 331163953Srrs /* not found */ 332163953Srrs return -1; 333163953Srrs } 334163953Srrs /* delete all destination addresses except the source */ 335163953Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 336163953Srrs if (net != src_net) { 337163953Srrs /* delete this address */ 338163953Srrs sctp_remove_net(stcb, net); 339163953Srrs#ifdef SCTP_DEBUG 340163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 341163953Srrs printf("asconf_del_remote_addrs_except: deleting "); 342163953Srrs sctp_print_address((struct sockaddr *)&net->ro._l_addr); 343163953Srrs } 344163953Srrs#endif 345163953Srrs /* notify upper layer */ 346163953Srrs sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0, 347163953Srrs (struct sockaddr *)&net->ro._l_addr); 348163953Srrs } 349163953Srrs } 350163953Srrs return 0; 351163953Srrs} 352163953Srrs 353163953Srrsstatic struct mbuf * 354163953Srrssctp_process_asconf_delete_ip(struct mbuf *m, struct sctp_asconf_paramhdr *aph, 355163953Srrs struct sctp_tcb *stcb, int response_required) 356163953Srrs{ 357163953Srrs struct mbuf *m_reply = NULL; 358163953Srrs struct sockaddr_storage sa_source, sa_store; 359163953Srrs struct sctp_ipv4addr_param *v4addr; 360163953Srrs uint16_t param_type, param_length, aparam_length; 361163953Srrs struct sockaddr *sa; 362163953Srrs struct sockaddr_in *sin; 363163953Srrs int zero_address = 0; 364163953Srrs int result; 365163953Srrs 366163953Srrs#ifdef INET6 367163953Srrs struct sockaddr_in6 *sin6; 368163953Srrs struct sctp_ipv6addr_param *v6addr; 369163953Srrs 370163953Srrs#endif /* INET6 */ 371163953Srrs 372163953Srrs /* get the source IP address for src and 0.0.0.0/::0 delete checks */ 373163953Srrs sctp_asconf_get_source_ip(m, (struct sockaddr *)&sa_source); 374163953Srrs 375163953Srrs aparam_length = ntohs(aph->ph.param_length); 376163953Srrs v4addr = (struct sctp_ipv4addr_param *)(aph + 1); 377163953Srrs#ifdef INET6 378163953Srrs v6addr = (struct sctp_ipv6addr_param *)(aph + 1); 379163953Srrs#endif /* INET6 */ 380163953Srrs param_type = ntohs(v4addr->ph.param_type); 381163953Srrs param_length = ntohs(v4addr->ph.param_length); 382163953Srrs 383163953Srrs sa = (struct sockaddr *)&sa_store; 384163953Srrs switch (param_type) { 385163953Srrs case SCTP_IPV4_ADDRESS: 386163953Srrs if (param_length != sizeof(struct sctp_ipv4addr_param)) { 387163953Srrs /* invalid param size */ 388163953Srrs return NULL; 389163953Srrs } 390163953Srrs sin = (struct sockaddr_in *)&sa_store; 391163953Srrs bzero(sin, sizeof(*sin)); 392163953Srrs sin->sin_family = AF_INET; 393163953Srrs sin->sin_len = sizeof(struct sockaddr_in); 394163953Srrs sin->sin_port = stcb->rport; 395163953Srrs sin->sin_addr.s_addr = v4addr->addr; 396163953Srrs if (sin->sin_addr.s_addr == INADDR_ANY) 397163953Srrs zero_address = 1; 398163953Srrs#ifdef SCTP_DEBUG 399163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 400163953Srrs printf("process_asconf_delete_ip: deleting "); 401163953Srrs sctp_print_address(sa); 402163953Srrs } 403163953Srrs#endif /* SCTP_DEBUG */ 404163953Srrs break; 405163953Srrs case SCTP_IPV6_ADDRESS: 406163953Srrs if (param_length != sizeof(struct sctp_ipv6addr_param)) { 407163953Srrs /* invalid param size */ 408163953Srrs return NULL; 409163953Srrs } 410163953Srrs#ifdef INET6 411163953Srrs sin6 = (struct sockaddr_in6 *)&sa_store; 412163953Srrs bzero(sin6, sizeof(*sin6)); 413163953Srrs sin6->sin6_family = AF_INET6; 414163953Srrs sin6->sin6_len = sizeof(struct sockaddr_in6); 415163953Srrs sin6->sin6_port = stcb->rport; 416163953Srrs memcpy(&sin6->sin6_addr, v6addr->addr, 417163953Srrs sizeof(struct in6_addr)); 418163953Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 419163953Srrs zero_address = 1; 420163953Srrs#ifdef SCTP_DEBUG 421163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 422163953Srrs printf("process_asconf_delete_ip: deleting "); 423163953Srrs sctp_print_address(sa); 424163953Srrs } 425163953Srrs#endif /* SCTP_DEBUG */ 426163953Srrs#else 427163953Srrs /* IPv6 not enabled! No "action" needed; just ack it */ 428163953Srrs#ifdef SCTP_DEBUG 429163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 430163953Srrs printf("process_asconf_delete_ip: v6 disabled- ignoring: "); 431163953Srrs sctp_print_address(sa); 432163953Srrs } 433163953Srrs#endif /* SCTP_DEBUG */ 434163953Srrs /* just respond with a "success" ASCONF-ACK */ 435163953Srrs return NULL; 436163953Srrs#endif /* INET6 */ 437163953Srrs break; 438163953Srrs default: 439163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 440163953Srrs SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph, 441163953Srrs aparam_length); 442163953Srrs return m_reply; 443163953Srrs } 444163953Srrs 445163953Srrs /* make sure the source address is not being deleted */ 446163953Srrs if (sctp_cmpaddr(sa, (struct sockaddr *)&sa_source)) { 447163953Srrs /* trying to delete the source address! */ 448163953Srrs#ifdef SCTP_DEBUG 449163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 450163953Srrs printf("process_asconf_delete_ip: tried to delete source addr\n"); 451163953Srrs } 452163953Srrs#endif /* SCTP_DEBUG */ 453163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 454163953Srrs SCTP_CAUSE_DELETING_SRC_ADDR, (uint8_t *) aph, 455163953Srrs aparam_length); 456163953Srrs return m_reply; 457163953Srrs } 458163953Srrs /* if deleting 0.0.0.0/::0, delete all addresses except src addr */ 459165647Srrs if (zero_address && sctp_nat_friendly) { 460163953Srrs result = sctp_asconf_del_remote_addrs_except(stcb, 461163953Srrs (struct sockaddr *)&sa_source); 462163953Srrs 463163953Srrs if (result) { 464163953Srrs /* src address did not exist? */ 465163953Srrs#ifdef SCTP_DEBUG 466163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 467163953Srrs printf("process_asconf_delete_ip: src addr does not exist?\n"); 468163953Srrs } 469163953Srrs#endif /* SCTP_DEBUG */ 470163953Srrs /* what error to reply with?? */ 471163953Srrs m_reply = 472163953Srrs sctp_asconf_error_response(aph->correlation_id, 473163953Srrs SCTP_CAUSE_REQUEST_REFUSED, (uint8_t *) aph, 474163953Srrs aparam_length); 475163953Srrs } else if (response_required) { 476163953Srrs m_reply = 477163953Srrs sctp_asconf_success_response(aph->correlation_id); 478163953Srrs } 479163953Srrs return m_reply; 480163953Srrs } 481163953Srrs /* delete the address */ 482163953Srrs result = sctp_del_remote_addr(stcb, sa); 483163953Srrs /* 484163953Srrs * note if result == -2, the address doesn't exist in the asoc but 485163953Srrs * since it's being deleted anyways, we just ack the delete -- but 486163953Srrs * this probably means something has already gone awry 487163953Srrs */ 488163953Srrs if (result == -1) { 489163953Srrs /* only one address in the asoc */ 490163953Srrs#ifdef SCTP_DEBUG 491163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 492163953Srrs printf("process_asconf_delete_ip: tried to delete last IP addr!\n"); 493163953Srrs } 494163953Srrs#endif /* SCTP_DEBUG */ 495163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 496163953Srrs SCTP_CAUSE_DELETING_LAST_ADDR, (uint8_t *) aph, 497163953Srrs aparam_length); 498163953Srrs } else { 499163953Srrs if (response_required) { 500163953Srrs m_reply = sctp_asconf_success_response(aph->correlation_id); 501163953Srrs } 502163953Srrs /* notify upper layer */ 503163953Srrs sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0, sa); 504163953Srrs } 505163953Srrs return m_reply; 506163953Srrs} 507163953Srrs 508163953Srrsstatic struct mbuf * 509163953Srrssctp_process_asconf_set_primary(struct mbuf *m, 510163953Srrs struct sctp_asconf_paramhdr *aph, struct sctp_tcb *stcb, 511163953Srrs int response_required) 512163953Srrs{ 513163953Srrs struct mbuf *m_reply = NULL; 514163953Srrs struct sockaddr_storage sa_source, sa_store; 515163953Srrs struct sctp_ipv4addr_param *v4addr; 516163953Srrs uint16_t param_type, param_length, aparam_length; 517163953Srrs struct sockaddr *sa; 518163953Srrs struct sockaddr_in *sin; 519163953Srrs int zero_address = 0; 520163953Srrs 521163953Srrs#ifdef INET6 522163953Srrs struct sockaddr_in6 *sin6; 523163953Srrs struct sctp_ipv6addr_param *v6addr; 524163953Srrs 525163953Srrs#endif /* INET6 */ 526163953Srrs 527163953Srrs aparam_length = ntohs(aph->ph.param_length); 528163953Srrs v4addr = (struct sctp_ipv4addr_param *)(aph + 1); 529163953Srrs#ifdef INET6 530163953Srrs v6addr = (struct sctp_ipv6addr_param *)(aph + 1); 531163953Srrs#endif /* INET6 */ 532163953Srrs param_type = ntohs(v4addr->ph.param_type); 533163953Srrs param_length = ntohs(v4addr->ph.param_length); 534163953Srrs 535163953Srrs sa = (struct sockaddr *)&sa_store; 536163953Srrs switch (param_type) { 537163953Srrs case SCTP_IPV4_ADDRESS: 538163953Srrs if (param_length != sizeof(struct sctp_ipv4addr_param)) { 539163953Srrs /* invalid param size */ 540163953Srrs return NULL; 541163953Srrs } 542163953Srrs sin = (struct sockaddr_in *)&sa_store; 543163953Srrs bzero(sin, sizeof(*sin)); 544163953Srrs sin->sin_family = AF_INET; 545163953Srrs sin->sin_len = sizeof(struct sockaddr_in); 546163953Srrs sin->sin_addr.s_addr = v4addr->addr; 547163953Srrs if (sin->sin_addr.s_addr == INADDR_ANY) 548163953Srrs zero_address = 1; 549163953Srrs#ifdef SCTP_DEBUG 550163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 551163953Srrs printf("process_asconf_set_primary: "); 552163953Srrs sctp_print_address(sa); 553163953Srrs } 554163953Srrs#endif /* SCTP_DEBUG */ 555163953Srrs break; 556163953Srrs case SCTP_IPV6_ADDRESS: 557163953Srrs if (param_length != sizeof(struct sctp_ipv6addr_param)) { 558163953Srrs /* invalid param size */ 559163953Srrs return NULL; 560163953Srrs } 561163953Srrs#ifdef INET6 562163953Srrs sin6 = (struct sockaddr_in6 *)&sa_store; 563163953Srrs bzero(sin6, sizeof(*sin6)); 564163953Srrs sin6->sin6_family = AF_INET6; 565163953Srrs sin6->sin6_len = sizeof(struct sockaddr_in6); 566163953Srrs memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr, 567163953Srrs sizeof(struct in6_addr)); 568163953Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 569163953Srrs zero_address = 1; 570163953Srrs#ifdef SCTP_DEBUG 571163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 572163953Srrs printf("process_asconf_set_primary: "); 573163953Srrs sctp_print_address(sa); 574163953Srrs } 575163953Srrs#endif /* SCTP_DEBUG */ 576163953Srrs#else 577163953Srrs /* IPv6 not enabled! No "action" needed; just ack it */ 578163953Srrs#ifdef SCTP_DEBUG 579163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 580163953Srrs printf("process_asconf_set_primary: v6 disabled- ignoring: "); 581163953Srrs sctp_print_address(sa); 582163953Srrs } 583163953Srrs#endif /* SCTP_DEBUG */ 584163953Srrs /* just respond with a "success" ASCONF-ACK */ 585163953Srrs return NULL; 586163953Srrs#endif /* INET6 */ 587163953Srrs break; 588163953Srrs default: 589163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 590163953Srrs SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph, 591163953Srrs aparam_length); 592163953Srrs return m_reply; 593163953Srrs } 594163953Srrs 595163953Srrs /* if 0.0.0.0/::0, use the source address instead */ 596165647Srrs if (zero_address && sctp_nat_friendly) { 597163953Srrs sa = (struct sockaddr *)&sa_source; 598163953Srrs sctp_asconf_get_source_ip(m, sa); 599163953Srrs#ifdef SCTP_DEBUG 600163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 601163953Srrs printf("process_asconf_set_primary: using source addr "); 602163953Srrs sctp_print_address(sa); 603163953Srrs } 604163953Srrs#endif /* SCTP_DEBUG */ 605163953Srrs } 606163953Srrs /* set the primary address */ 607163953Srrs if (sctp_set_primary_addr(stcb, sa, NULL) == 0) { 608163953Srrs#ifdef SCTP_DEBUG 609163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 610163953Srrs printf("process_asconf_set_primary: primary address set\n"); 611163953Srrs } 612163953Srrs#endif /* SCTP_DEBUG */ 613163953Srrs /* notify upper layer */ 614163953Srrs sctp_ulp_notify(SCTP_NOTIFY_ASCONF_SET_PRIMARY, stcb, 0, sa); 615163953Srrs 616163953Srrs if (response_required) { 617163953Srrs m_reply = sctp_asconf_success_response(aph->correlation_id); 618163953Srrs } 619163953Srrs } else { 620163953Srrs /* couldn't set the requested primary address! */ 621163953Srrs#ifdef SCTP_DEBUG 622163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 623163953Srrs printf("process_asconf_set_primary: set primary failed!\n"); 624163953Srrs } 625163953Srrs#endif /* SCTP_DEBUG */ 626163953Srrs /* must have been an invalid address, so report */ 627163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 628163953Srrs SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph, 629163953Srrs aparam_length); 630163953Srrs } 631163953Srrs 632163953Srrs return m_reply; 633163953Srrs} 634163953Srrs 635163953Srrs/* 636163953Srrs * handles an ASCONF chunk. 637163953Srrs * if all parameters are processed ok, send a plain (empty) ASCONF-ACK 638163953Srrs */ 639163953Srrsvoid 640163953Srrssctp_handle_asconf(struct mbuf *m, unsigned int offset, 641163953Srrs struct sctp_asconf_chunk *cp, struct sctp_tcb *stcb) 642163953Srrs{ 643163953Srrs struct sctp_association *asoc; 644163953Srrs uint32_t serial_num; 645163953Srrs struct mbuf *m_ack, *m_result, *m_tail; 646163953Srrs struct sctp_asconf_ack_chunk *ack_cp; 647163953Srrs struct sctp_asconf_paramhdr *aph, *ack_aph; 648163953Srrs struct sctp_ipv6addr_param *p_addr; 649163953Srrs unsigned int asconf_limit; 650163953Srrs int error = 0; /* did an error occur? */ 651163953Srrs 652163953Srrs /* asconf param buffer */ 653166675Srrs uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE]; 654163953Srrs 655163953Srrs /* verify minimum length */ 656163953Srrs if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_chunk)) { 657163953Srrs#ifdef SCTP_DEBUG 658163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 659163953Srrs printf("handle_asconf: chunk too small = %xh\n", 660163953Srrs ntohs(cp->ch.chunk_length)); 661163953Srrs } 662163953Srrs#endif /* SCTP_DEBUG */ 663163953Srrs return; 664163953Srrs } 665163953Srrs asoc = &stcb->asoc; 666163953Srrs serial_num = ntohl(cp->serial_number); 667163953Srrs 668163953Srrs if (serial_num == asoc->asconf_seq_in) { 669163953Srrs /* got a duplicate ASCONF */ 670163953Srrs#ifdef SCTP_DEBUG 671163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 672163953Srrs printf("handle_asconf: got duplicate serial number = %xh\n", 673163953Srrs serial_num); 674163953Srrs } 675163953Srrs#endif /* SCTP_DEBUG */ 676163953Srrs /* resend last ASCONF-ACK... */ 677163953Srrs sctp_send_asconf_ack(stcb, 1); 678163953Srrs return; 679163953Srrs } else if (serial_num != (asoc->asconf_seq_in + 1)) { 680163953Srrs#ifdef SCTP_DEBUG 681163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 682163953Srrs printf("handle_asconf: incorrect serial number = %xh (expected next = %xh)\n", 683163953Srrs serial_num, asoc->asconf_seq_in + 1); 684163953Srrs } 685163953Srrs#endif /* SCTP_DEBUG */ 686163953Srrs return; 687163953Srrs } 688163953Srrs /* it's the expected "next" sequence number, so process it */ 689163953Srrs asoc->asconf_seq_in = serial_num; /* update sequence */ 690163953Srrs /* get length of all the param's in the ASCONF */ 691163953Srrs asconf_limit = offset + ntohs(cp->ch.chunk_length); 692163953Srrs#ifdef SCTP_DEBUG 693163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 694163953Srrs printf("handle_asconf: asconf_limit=%u, sequence=%xh\n", 695163953Srrs asconf_limit, serial_num); 696163953Srrs } 697163953Srrs#endif /* SCTP_DEBUG */ 698163953Srrs if (asoc->last_asconf_ack_sent != NULL) { 699163953Srrs /* free last ASCONF-ACK message sent */ 700163953Srrs sctp_m_freem(asoc->last_asconf_ack_sent); 701163953Srrs asoc->last_asconf_ack_sent = NULL; 702163953Srrs } 703165647Srrs m_ack = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_ack_chunk), 0, 704163953Srrs M_DONTWAIT, 1, MT_DATA); 705163953Srrs if (m_ack == NULL) { 706163953Srrs#ifdef SCTP_DEBUG 707163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 708163953Srrs printf("handle_asconf: couldn't get mbuf!\n"); 709163953Srrs } 710163953Srrs#endif /* SCTP_DEBUG */ 711163953Srrs return; 712163953Srrs } 713163953Srrs m_tail = m_ack; /* current reply chain's tail */ 714163953Srrs 715163953Srrs /* fill in ASCONF-ACK header */ 716163953Srrs ack_cp = mtod(m_ack, struct sctp_asconf_ack_chunk *); 717163953Srrs ack_cp->ch.chunk_type = SCTP_ASCONF_ACK; 718163953Srrs ack_cp->ch.chunk_flags = 0; 719163953Srrs ack_cp->serial_number = htonl(serial_num); 720163953Srrs /* set initial lengths (eg. just an ASCONF-ACK), ntohx at the end! */ 721165647Srrs SCTP_BUF_LEN(m_ack) = sizeof(struct sctp_asconf_ack_chunk); 722163953Srrs ack_cp->ch.chunk_length = sizeof(struct sctp_asconf_ack_chunk); 723163953Srrs 724163953Srrs /* skip the lookup address parameter */ 725163953Srrs offset += sizeof(struct sctp_asconf_chunk); 726163953Srrs p_addr = (struct sctp_ipv6addr_param *)sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr), (uint8_t *) & aparam_buf); 727163953Srrs if (p_addr == NULL) { 728163953Srrs#ifdef SCTP_DEBUG 729163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 730163953Srrs printf("handle_asconf: couldn't get lookup addr!\n"); 731163953Srrs } 732163953Srrs#endif /* SCTP_DEBUG */ 733163953Srrs 734163953Srrs /* respond with a missing/invalid mandatory parameter error */ 735163953Srrs return; 736163953Srrs } 737163953Srrs /* param_length is already validated in process_control... */ 738163953Srrs offset += ntohs(p_addr->ph.param_length); /* skip lookup addr */ 739163953Srrs 740163953Srrs /* get pointer to first asconf param in ASCONF-ACK */ 741163953Srrs ack_aph = (struct sctp_asconf_paramhdr *)(mtod(m_ack, caddr_t)+sizeof(struct sctp_asconf_ack_chunk)); 742163953Srrs if (ack_aph == NULL) { 743163953Srrs#ifdef SCTP_DEBUG 744163953Srrs printf("Gak in asconf2\n"); 745163953Srrs#endif 746163953Srrs return; 747163953Srrs } 748163953Srrs /* get pointer to first asconf param in ASCONF */ 749163953Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, sizeof(struct sctp_asconf_paramhdr), (uint8_t *) & aparam_buf); 750163953Srrs if (aph == NULL) { 751163953Srrs#ifdef SCTP_DEBUG 752163953Srrs printf("Empty ASCONF received?\n"); 753163953Srrs#endif 754163953Srrs goto send_reply; 755163953Srrs } 756163953Srrs /* process through all parameters */ 757163953Srrs while (aph != NULL) { 758163953Srrs unsigned int param_length, param_type; 759163953Srrs 760163953Srrs param_type = ntohs(aph->ph.param_type); 761163953Srrs param_length = ntohs(aph->ph.param_length); 762163953Srrs if (offset + param_length > asconf_limit) { 763163953Srrs /* parameter goes beyond end of chunk! */ 764163953Srrs sctp_m_freem(m_ack); 765163953Srrs return; 766163953Srrs } 767163953Srrs m_result = NULL; 768163953Srrs 769163953Srrs if (param_length > sizeof(aparam_buf)) { 770163953Srrs#ifdef SCTP_DEBUG 771163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 772163953Srrs printf("handle_asconf: param length (%u) larger than buffer size!\n", param_length); 773163953Srrs } 774163953Srrs#endif /* SCTP_DEBUG */ 775163953Srrs sctp_m_freem(m_ack); 776163953Srrs return; 777163953Srrs } 778163953Srrs if (param_length <= sizeof(struct sctp_paramhdr)) { 779163953Srrs#ifdef SCTP_DEBUG 780163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 781163953Srrs printf("handle_asconf: param length (%u) too short\n", param_length); 782163953Srrs } 783163953Srrs#endif /* SCTP_DEBUG */ 784163953Srrs sctp_m_freem(m_ack); 785163953Srrs } 786163953Srrs /* get the entire parameter */ 787163953Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf); 788163953Srrs if (aph == NULL) { 789163953Srrs#ifdef SCTP_DEBUG 790163953Srrs printf("Gag\n"); 791163953Srrs#endif 792163953Srrs sctp_m_freem(m_ack); 793163953Srrs return; 794163953Srrs } 795163953Srrs switch (param_type) { 796163953Srrs case SCTP_ADD_IP_ADDRESS: 797163953Srrs asoc->peer_supports_asconf = 1; 798163953Srrs m_result = sctp_process_asconf_add_ip(m, aph, stcb, 799163953Srrs error); 800163953Srrs break; 801163953Srrs case SCTP_DEL_IP_ADDRESS: 802163953Srrs asoc->peer_supports_asconf = 1; 803163953Srrs m_result = sctp_process_asconf_delete_ip(m, aph, stcb, 804163953Srrs error); 805163953Srrs break; 806163953Srrs case SCTP_ERROR_CAUSE_IND: 807163953Srrs /* not valid in an ASCONF chunk */ 808163953Srrs break; 809163953Srrs case SCTP_SET_PRIM_ADDR: 810163953Srrs asoc->peer_supports_asconf = 1; 811163953Srrs m_result = sctp_process_asconf_set_primary(m, aph, 812163953Srrs stcb, error); 813163953Srrs break; 814163953Srrs case SCTP_SUCCESS_REPORT: 815163953Srrs /* not valid in an ASCONF chunk */ 816163953Srrs break; 817163953Srrs case SCTP_ULP_ADAPTATION: 818163953Srrs /* FIX */ 819163953Srrs break; 820163953Srrs default: 821163953Srrs if ((param_type & 0x8000) == 0) { 822163953Srrs /* Been told to STOP at this param */ 823163953Srrs asconf_limit = offset; 824163953Srrs /* 825163953Srrs * FIX FIX - We need to call 826163953Srrs * sctp_arethere_unrecognized_parameters() 827163953Srrs * to get a operr and send it for any 828163953Srrs * param's with the 0x4000 bit set OR do it 829163953Srrs * here ourselves... note we still must STOP 830163953Srrs * if the 0x8000 bit is clear. 831163953Srrs */ 832163953Srrs } 833163953Srrs /* unknown/invalid param type */ 834163953Srrs break; 835163953Srrs } /* switch */ 836163953Srrs 837163953Srrs /* add any (error) result to the reply mbuf chain */ 838163953Srrs if (m_result != NULL) { 839165647Srrs SCTP_BUF_NEXT(m_tail) = m_result; 840163953Srrs m_tail = m_result; 841163953Srrs /* update lengths, make sure it's aligned too */ 842165647Srrs SCTP_BUF_LEN(m_result) = SCTP_SIZE32(SCTP_BUF_LEN(m_result)); 843165647Srrs ack_cp->ch.chunk_length += SCTP_BUF_LEN(m_result); 844163953Srrs /* set flag to force success reports */ 845163953Srrs error = 1; 846163953Srrs } 847163953Srrs offset += SCTP_SIZE32(param_length); 848163953Srrs /* update remaining ASCONF message length to process */ 849163953Srrs if (offset >= asconf_limit) { 850163953Srrs /* no more data in the mbuf chain */ 851163953Srrs break; 852163953Srrs } 853163953Srrs /* get pointer to next asconf param */ 854163953Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, 855163953Srrs sizeof(struct sctp_asconf_paramhdr), 856163953Srrs (uint8_t *) & aparam_buf); 857163953Srrs if (aph == NULL) { 858163953Srrs /* can't get an asconf paramhdr */ 859163953Srrs#ifdef SCTP_DEBUG 860163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 861163953Srrs printf("handle_asconf: can't get asconf param hdr!\n"); 862163953Srrs } 863163953Srrs#endif /* SCTP_DEBUG */ 864163953Srrs /* FIX ME - add error here... */ 865163953Srrs } 866163953Srrs } /* while */ 867163953Srrs 868163953Srrssend_reply: 869163953Srrs ack_cp->ch.chunk_length = htons(ack_cp->ch.chunk_length); 870163953Srrs /* save the ASCONF-ACK reply */ 871163953Srrs asoc->last_asconf_ack_sent = m_ack; 872163953Srrs 873163953Srrs /* see if last_control_chunk_from is set properly (use IP src addr) */ 874163953Srrs if (stcb->asoc.last_control_chunk_from == NULL) { 875163953Srrs /* 876163953Srrs * this could happen if the source address was just newly 877163953Srrs * added 878163953Srrs */ 879163953Srrs struct ip *iph; 880163953Srrs struct sctphdr *sh; 881163953Srrs struct sockaddr_storage from_store; 882163953Srrs struct sockaddr *from = (struct sockaddr *)&from_store; 883163953Srrs 884163953Srrs#ifdef SCTP_DEBUG 885163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) 886163953Srrs printf("handle_asconf: looking up net for IP source address\n"); 887163953Srrs#endif /* SCTP_DEBUG */ 888163953Srrs /* pullup already done, IP options already stripped */ 889163953Srrs iph = mtod(m, struct ip *); 890163953Srrs sh = (struct sctphdr *)((caddr_t)iph + sizeof(*iph)); 891163953Srrs if (iph->ip_v == IPVERSION) { 892163953Srrs struct sockaddr_in *from4; 893163953Srrs 894163953Srrs from4 = (struct sockaddr_in *)&from_store; 895163953Srrs bzero(from4, sizeof(*from4)); 896163953Srrs from4->sin_family = AF_INET; 897163953Srrs from4->sin_len = sizeof(struct sockaddr_in); 898163953Srrs from4->sin_addr.s_addr = iph->ip_src.s_addr; 899163953Srrs from4->sin_port = sh->src_port; 900163953Srrs } else if (iph->ip_v == (IPV6_VERSION >> 4)) { 901163953Srrs struct ip6_hdr *ip6; 902163953Srrs struct sockaddr_in6 *from6; 903163953Srrs 904163953Srrs ip6 = mtod(m, struct ip6_hdr *); 905163953Srrs from6 = (struct sockaddr_in6 *)&from_store; 906163953Srrs bzero(from6, sizeof(*from6)); 907163953Srrs from6->sin6_family = AF_INET6; 908163953Srrs from6->sin6_len = sizeof(struct sockaddr_in6); 909163953Srrs from6->sin6_addr = ip6->ip6_src; 910163953Srrs from6->sin6_port = sh->src_port; 911163953Srrs /* Get the scopes in properly to the sin6 addr's */ 912163953Srrs /* we probably don't need these operations */ 913163953Srrs (void)sa6_recoverscope(from6); 914163953Srrs sa6_embedscope(from6, ip6_use_defzone); 915163953Srrs } else { 916163953Srrs /* unknown address type */ 917163953Srrs from = NULL; 918163953Srrs } 919163953Srrs if (from != NULL) { 920163953Srrs#ifdef SCTP_DEBUG 921163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 922163953Srrs printf("Looking for IP source: "); 923163953Srrs sctp_print_address(from); 924163953Srrs } 925163953Srrs#endif /* SCTP_DEBUG */ 926163953Srrs /* look up the from address */ 927163953Srrs stcb->asoc.last_control_chunk_from = sctp_findnet(stcb, from); 928163953Srrs#ifdef SCTP_DEBUG 929163953Srrs if ((stcb->asoc.last_control_chunk_from == NULL) && 930163953Srrs (sctp_debug_on & SCTP_DEBUG_ASCONF1)) 931163953Srrs printf("handle_asconf: IP source address not found?!\n"); 932163953Srrs#endif /* SCTP_DEBUG */ 933163953Srrs } 934163953Srrs } 935163953Srrs /* and send it (a new one) out... */ 936163953Srrs sctp_send_asconf_ack(stcb, 0); 937163953Srrs} 938163953Srrs 939163953Srrs/* 940163953Srrs * does the address match? returns 0 if not, 1 if so 941163953Srrs */ 942163953Srrsstatic uint32_t 943163953Srrssctp_asconf_addr_match(struct sctp_asconf_addr *aa, struct sockaddr *sa) 944163953Srrs{ 945163953Srrs#ifdef INET6 946163953Srrs if (sa->sa_family == AF_INET6) { 947163953Srrs /* IPv6 sa address */ 948163953Srrs /* XXX scopeid */ 949163953Srrs struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa; 950163953Srrs 951163953Srrs if ((aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) && 952163953Srrs (memcmp(&aa->ap.addrp.addr, &sin6->sin6_addr, 953163953Srrs sizeof(struct in6_addr)) == 0)) { 954163953Srrs return (1); 955163953Srrs } 956163953Srrs } else 957163953Srrs#endif /* INET6 */ 958163953Srrs if (sa->sa_family == AF_INET) { 959163953Srrs /* IPv4 sa address */ 960163953Srrs struct sockaddr_in *sin = (struct sockaddr_in *)sa; 961163953Srrs 962163953Srrs if ((aa->ap.addrp.ph.param_type == SCTP_IPV4_ADDRESS) && 963163953Srrs (memcmp(&aa->ap.addrp.addr, &sin->sin_addr, 964163953Srrs sizeof(struct in_addr)) == 0)) { 965163953Srrs return (1); 966163953Srrs } 967163953Srrs } 968163953Srrs return (0); 969163953Srrs} 970163953Srrs 971163953Srrs/* 972163953Srrs * Cleanup for non-responded/OP ERR'd ASCONF 973163953Srrs */ 974163953Srrsvoid 975163953Srrssctp_asconf_cleanup(struct sctp_tcb *stcb, struct sctp_nets *net) 976163953Srrs{ 977163953Srrs /* mark peer as ASCONF incapable */ 978163953Srrs stcb->asoc.peer_supports_asconf = 0; 979163953Srrs /* 980163953Srrs * clear out any existing asconfs going out 981163953Srrs */ 982165220Srrs sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_ASCONF + SCTP_LOC_2); 983163953Srrs stcb->asoc.asconf_seq_out++; 984163953Srrs /* remove the old ASCONF on our outbound queue */ 985163953Srrs sctp_toss_old_asconf(stcb); 986163953Srrs} 987163953Srrs 988163953Srrs/* 989163953Srrs * process an ADD/DELETE IP ack from peer. 990167598Srrs * addr corresponding sctp_ifa to the address being added/deleted. 991163953Srrs * type: SCTP_ADD_IP_ADDRESS or SCTP_DEL_IP_ADDRESS. 992163953Srrs * flag: 1=success, 0=failure. 993163953Srrs */ 994163953Srrsstatic void 995167598Srrssctp_asconf_addr_mgmt_ack(struct sctp_tcb *stcb, struct sctp_ifa *addr, 996163953Srrs uint16_t type, uint32_t flag) 997163953Srrs{ 998163953Srrs /* 999163953Srrs * do the necessary asoc list work- if we get a failure indication, 1000163953Srrs * leave the address on the "do not use" asoc list if we get a 1001163953Srrs * success indication, remove the address from the list 1002163953Srrs */ 1003163953Srrs /* 1004163953Srrs * Note: this will only occur for ADD_IP_ADDRESS, since 1005163953Srrs * DEL_IP_ADDRESS is never actually added to the list... 1006163953Srrs */ 1007163953Srrs if (flag) { 1008163953Srrs /* success case, so remove from the list */ 1009163953Srrs sctp_del_local_addr_assoc(stcb, addr); 1010163953Srrs } 1011163953Srrs /* else, leave it on the list */ 1012163953Srrs} 1013163953Srrs 1014163953Srrs/* 1015163953Srrs * add an asconf add/delete IP address parameter to the queue. 1016163953Srrs * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR. 1017163953Srrs * returns 0 if completed, non-zero if not completed. 1018163953Srrs * NOTE: if adding, but delete already scheduled (and not yet sent out), 1019163953Srrs * simply remove from queue. Same for deleting an address already scheduled 1020163953Srrs * for add. If a duplicate operation is found, ignore the new one. 1021163953Srrs */ 1022163953Srrsstatic uint32_t 1023167598Srrssctp_asconf_queue_add(struct sctp_tcb *stcb, struct sctp_ifa *ifa, uint16_t type) 1024163953Srrs{ 1025163953Srrs struct sctp_asconf_addr *aa, *aa_next; 1026163953Srrs struct sockaddr *sa; 1027163953Srrs 1028163953Srrs /* see if peer supports ASCONF */ 1029163953Srrs if (stcb->asoc.peer_supports_asconf == 0) { 1030163953Srrs return (-1); 1031163953Srrs } 1032163953Srrs /* make sure the request isn't already in the queue */ 1033163953Srrs for (aa = TAILQ_FIRST(&stcb->asoc.asconf_queue); aa != NULL; 1034163953Srrs aa = aa_next) { 1035163953Srrs aa_next = TAILQ_NEXT(aa, next); 1036163953Srrs /* address match? */ 1037167598Srrs if (sctp_asconf_addr_match(aa, &ifa->address.sa) == 0) 1038163953Srrs continue; 1039163953Srrs /* is the request already in queue (sent or not) */ 1040163953Srrs if (aa->ap.aph.ph.param_type == type) { 1041163953Srrs return (-1); 1042163953Srrs } 1043163953Srrs /* is the negative request already in queue, and not sent */ 1044163953Srrs if (aa->sent == 0 && 1045163953Srrs /* add requested, delete already queued */ 1046163953Srrs ((type == SCTP_ADD_IP_ADDRESS && 1047163953Srrs aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) || 1048163953Srrs /* delete requested, add already queued */ 1049163953Srrs (type == SCTP_DEL_IP_ADDRESS && 1050163953Srrs aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS))) { 1051163953Srrs /* delete the existing entry in the queue */ 1052163953Srrs TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next); 1053163953Srrs /* take the entry off the appropriate list */ 1054163953Srrs sctp_asconf_addr_mgmt_ack(stcb, aa->ifa, type, 1); 1055163953Srrs /* free the entry */ 1056168299Srrs sctp_free_ifa(aa->ifa); 1057163953Srrs SCTP_FREE(aa); 1058163953Srrs return (-1); 1059163953Srrs } 1060163953Srrs } /* for each aa */ 1061163953Srrs 1062163953Srrs /* adding new request to the queue */ 1063163953Srrs SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa), "AsconfAddr"); 1064163953Srrs if (aa == NULL) { 1065163953Srrs /* didn't get memory */ 1066163953Srrs#ifdef SCTP_DEBUG 1067163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 1068163953Srrs printf("asconf_queue_add: failed to get memory!\n"); 1069163953Srrs } 1070163953Srrs#endif /* SCTP_DEBUG */ 1071163953Srrs return (-1); 1072163953Srrs } 1073163953Srrs /* fill in asconf address parameter fields */ 1074163953Srrs /* top level elements are "networked" during send */ 1075163953Srrs aa->ap.aph.ph.param_type = type; 1076163953Srrs aa->ifa = ifa; 1077168299Srrs atomic_add_int(&ifa->refcount, 1); 1078163953Srrs /* correlation_id filled in during send routine later... */ 1079167598Srrs if (ifa->address.sa.sa_family == AF_INET6) { 1080163953Srrs /* IPv6 address */ 1081163953Srrs struct sockaddr_in6 *sin6; 1082163953Srrs 1083167598Srrs sin6 = (struct sockaddr_in6 *)&ifa->address.sa; 1084163953Srrs sa = (struct sockaddr *)sin6; 1085163953Srrs aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS; 1086163953Srrs aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param)); 1087163953Srrs aa->ap.aph.ph.param_length = 1088163953Srrs sizeof(struct sctp_asconf_paramhdr) + 1089163953Srrs sizeof(struct sctp_ipv6addr_param); 1090163953Srrs memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr, 1091163953Srrs sizeof(struct in6_addr)); 1092167598Srrs } else if (ifa->address.sa.sa_family == AF_INET) { 1093163953Srrs /* IPv4 address */ 1094167598Srrs struct sockaddr_in *sin = (struct sockaddr_in *)&ifa->address.sa; 1095163953Srrs 1096163953Srrs sa = (struct sockaddr *)sin; 1097163953Srrs aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS; 1098163953Srrs aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param)); 1099163953Srrs aa->ap.aph.ph.param_length = 1100163953Srrs sizeof(struct sctp_asconf_paramhdr) + 1101163953Srrs sizeof(struct sctp_ipv4addr_param); 1102163953Srrs memcpy(&aa->ap.addrp.addr, &sin->sin_addr, 1103163953Srrs sizeof(struct in_addr)); 1104163953Srrs } else { 1105163953Srrs /* invalid family! */ 1106163953Srrs return (-1); 1107163953Srrs } 1108163953Srrs aa->sent = 0; /* clear sent flag */ 1109163953Srrs 1110163953Srrs /* 1111163953Srrs * if we are deleting an address it should go out last otherwise, 1112163953Srrs * add it to front of the pending queue 1113163953Srrs */ 1114163953Srrs if (type == SCTP_ADD_IP_ADDRESS) { 1115163953Srrs /* add goes to the front of the queue */ 1116163953Srrs TAILQ_INSERT_HEAD(&stcb->asoc.asconf_queue, aa, next); 1117163953Srrs#ifdef SCTP_DEBUG 1118163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF2) { 1119163953Srrs printf("asconf_queue_add: appended asconf ADD_IP_ADDRESS: "); 1120163953Srrs sctp_print_address(sa); 1121163953Srrs } 1122163953Srrs#endif /* SCTP_DEBUG */ 1123163953Srrs } else { 1124163953Srrs /* delete and set primary goes to the back of the queue */ 1125163953Srrs TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next); 1126163953Srrs#ifdef SCTP_DEBUG 1127163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF2) { 1128163953Srrs if (type == SCTP_DEL_IP_ADDRESS) { 1129163953Srrs printf("asconf_queue_add: inserted asconf DEL_IP_ADDRESS: "); 1130163953Srrs sctp_print_address(sa); 1131163953Srrs } else { 1132163953Srrs printf("asconf_queue_add: inserted asconf SET_PRIM_ADDR: "); 1133163953Srrs sctp_print_address(sa); 1134163953Srrs } 1135163953Srrs } 1136163953Srrs#endif /* SCTP_DEBUG */ 1137163953Srrs } 1138163953Srrs 1139163953Srrs return (0); 1140163953Srrs} 1141163953Srrs 1142163953Srrs/* 1143163953Srrs * add an asconf add/delete IP address parameter to the queue by addr. 1144163953Srrs * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR. 1145163953Srrs * returns 0 if completed, non-zero if not completed. 1146163953Srrs * NOTE: if adding, but delete already scheduled (and not yet sent out), 1147163953Srrs * simply remove from queue. Same for deleting an address already scheduled 1148163953Srrs * for add. If a duplicate operation is found, ignore the new one. 1149163953Srrs */ 1150163953Srrsstatic uint32_t 1151163953Srrssctp_asconf_queue_add_sa(struct sctp_tcb *stcb, struct sockaddr *sa, 1152163953Srrs uint16_t type) 1153163953Srrs{ 1154168299Srrs struct sctp_ifa *ifa; 1155163953Srrs struct sctp_asconf_addr *aa, *aa_next; 1156167598Srrs uint32_t vrf_id; 1157163953Srrs 1158163953Srrs /* see if peer supports ASCONF */ 1159163953Srrs if (stcb->asoc.peer_supports_asconf == 0) { 1160163953Srrs return (-1); 1161163953Srrs } 1162163953Srrs /* make sure the request isn't already in the queue */ 1163163953Srrs for (aa = TAILQ_FIRST(&stcb->asoc.asconf_queue); aa != NULL; 1164163953Srrs aa = aa_next) { 1165163953Srrs aa_next = TAILQ_NEXT(aa, next); 1166163953Srrs /* address match? */ 1167163953Srrs if (sctp_asconf_addr_match(aa, sa) == 0) 1168163953Srrs continue; 1169163953Srrs /* is the request already in queue (sent or not) */ 1170163953Srrs if (aa->ap.aph.ph.param_type == type) { 1171163953Srrs return (-1); 1172163953Srrs } 1173163953Srrs /* is the negative request already in queue, and not sent */ 1174163953Srrs if (aa->sent == 1) 1175163953Srrs continue; 1176163953Srrs if (type == SCTP_ADD_IP_ADDRESS && 1177163953Srrs aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) { 1178163953Srrs /* add requested, delete already queued */ 1179163953Srrs 1180163953Srrs /* delete the existing entry in the queue */ 1181163953Srrs TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next); 1182163953Srrs /* free the entry */ 1183168299Srrs sctp_free_ifa(aa->ifa); 1184163953Srrs SCTP_FREE(aa); 1185163953Srrs return (-1); 1186163953Srrs } else if (type == SCTP_DEL_IP_ADDRESS && 1187163953Srrs aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS) { 1188163953Srrs /* delete requested, add already queued */ 1189163953Srrs 1190163953Srrs /* delete the existing entry in the queue */ 1191163953Srrs TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next); 1192163953Srrs /* take the entry off the appropriate list */ 1193163953Srrs sctp_asconf_addr_mgmt_ack(stcb, aa->ifa, type, 1); 1194163953Srrs /* free the entry */ 1195168299Srrs sctp_free_ifa(aa->ifa); 1196163953Srrs SCTP_FREE(aa); 1197163953Srrs return (-1); 1198163953Srrs } 1199163953Srrs } /* for each aa */ 1200168299Srrs if (stcb) { 1201168299Srrs vrf_id = stcb->asoc.vrf_id; 1202168299Srrs } else { 1203168299Srrs vrf_id = SCTP_DEFAULT_VRFID; 1204168299Srrs } 1205163953Srrs 1206168299Srrs ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0); 1207168299Srrs if (ifa == NULL) { 1208168299Srrs /* Invalid address */ 1209168299Srrs return (-1); 1210168299Srrs } 1211163953Srrs /* adding new request to the queue */ 1212163953Srrs SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa), "AsconfAddr"); 1213163953Srrs if (aa == NULL) { 1214163953Srrs /* didn't get memory */ 1215163953Srrs#ifdef SCTP_DEBUG 1216163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 1217163953Srrs printf("asconf_queue_add_sa: failed to get memory!\n"); 1218163953Srrs } 1219163953Srrs#endif /* SCTP_DEBUG */ 1220163953Srrs return (-1); 1221163953Srrs } 1222163953Srrs /* fill in asconf address parameter fields */ 1223163953Srrs /* top level elements are "networked" during send */ 1224163953Srrs aa->ap.aph.ph.param_type = type; 1225168299Srrs aa->ifa = ifa; 1226168299Srrs atomic_add_int(&ifa->refcount, 1); 1227163953Srrs /* correlation_id filled in during send routine later... */ 1228163953Srrs if (sa->sa_family == AF_INET6) { 1229163953Srrs /* IPv6 address */ 1230163953Srrs struct sockaddr_in6 *sin6; 1231163953Srrs 1232163953Srrs sin6 = (struct sockaddr_in6 *)sa; 1233163953Srrs aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS; 1234163953Srrs aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param)); 1235163953Srrs aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv6addr_param); 1236163953Srrs memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr, 1237163953Srrs sizeof(struct in6_addr)); 1238163953Srrs } else if (sa->sa_family == AF_INET) { 1239163953Srrs /* IPv4 address */ 1240163953Srrs struct sockaddr_in *sin = (struct sockaddr_in *)sa; 1241163953Srrs 1242163953Srrs aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS; 1243163953Srrs aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param)); 1244163953Srrs aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv4addr_param); 1245163953Srrs memcpy(&aa->ap.addrp.addr, &sin->sin_addr, 1246163953Srrs sizeof(struct in_addr)); 1247163953Srrs } else { 1248163953Srrs /* invalid family! */ 1249164085Srrs SCTP_FREE(aa); 1250163953Srrs return (-1); 1251163953Srrs } 1252163953Srrs aa->sent = 0; /* clear sent flag */ 1253163953Srrs 1254163953Srrs /* 1255163953Srrs * if we are deleting an address it should go out last otherwise, 1256163953Srrs * add it to front of the pending queue 1257163953Srrs */ 1258163953Srrs if (type == SCTP_ADD_IP_ADDRESS) { 1259163953Srrs /* add goes to the front of the queue */ 1260163953Srrs TAILQ_INSERT_HEAD(&stcb->asoc.asconf_queue, aa, next); 1261163953Srrs } else { 1262163953Srrs /* delete and set primary goes to the back of the queue */ 1263163953Srrs TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next); 1264163953Srrs } 1265163953Srrs 1266163953Srrs return (0); 1267163953Srrs} 1268163953Srrs 1269163953Srrs/* 1270163953Srrs * find a specific asconf param on our "sent" queue 1271163953Srrs */ 1272163953Srrsstatic struct sctp_asconf_addr * 1273163953Srrssctp_asconf_find_param(struct sctp_tcb *stcb, uint32_t correlation_id) 1274163953Srrs{ 1275163953Srrs struct sctp_asconf_addr *aa; 1276163953Srrs 1277163953Srrs TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) { 1278163953Srrs if (aa->ap.aph.correlation_id == correlation_id && 1279163953Srrs aa->sent == 1) { 1280163953Srrs /* found it */ 1281163953Srrs return (aa); 1282163953Srrs } 1283163953Srrs } 1284163953Srrs /* didn't find it */ 1285163953Srrs return (NULL); 1286163953Srrs} 1287163953Srrs 1288163953Srrs/* 1289163953Srrs * process an SCTP_ERROR_CAUSE_IND for a ASCONF-ACK parameter and do 1290163953Srrs * notifications based on the error response 1291163953Srrs */ 1292163953Srrsstatic void 1293163953Srrssctp_asconf_process_error(struct sctp_tcb *stcb, 1294163953Srrs struct sctp_asconf_paramhdr *aph) 1295163953Srrs{ 1296163953Srrs struct sctp_error_cause *eh; 1297163953Srrs struct sctp_paramhdr *ph; 1298163953Srrs uint16_t param_type; 1299163953Srrs uint16_t error_code; 1300163953Srrs 1301163953Srrs eh = (struct sctp_error_cause *)(aph + 1); 1302163953Srrs ph = (struct sctp_paramhdr *)(eh + 1); 1303163953Srrs /* validate lengths */ 1304163953Srrs if (htons(eh->length) + sizeof(struct sctp_error_cause) > 1305163953Srrs htons(aph->ph.param_length)) { 1306163953Srrs /* invalid error cause length */ 1307163953Srrs#ifdef SCTP_DEBUG 1308163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 1309163953Srrs printf("asconf_process_error: cause element too long\n"); 1310163953Srrs } 1311163953Srrs#endif /* SCTP_DEBUG */ 1312163953Srrs return; 1313163953Srrs } 1314163953Srrs if (htons(ph->param_length) + sizeof(struct sctp_paramhdr) > 1315163953Srrs htons(eh->length)) { 1316163953Srrs /* invalid included TLV length */ 1317163953Srrs#ifdef SCTP_DEBUG 1318163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 1319163953Srrs printf("asconf_process_error: included TLV too long\n"); 1320163953Srrs } 1321163953Srrs#endif /* SCTP_DEBUG */ 1322163953Srrs return; 1323163953Srrs } 1324163953Srrs /* which error code ? */ 1325163953Srrs error_code = ntohs(eh->code); 1326163953Srrs param_type = ntohs(aph->ph.param_type); 1327163953Srrs /* FIX: this should go back up the REMOTE_ERROR ULP notify */ 1328163953Srrs switch (error_code) { 1329163953Srrs case SCTP_CAUSE_RESOURCE_SHORTAGE: 1330163953Srrs /* we allow ourselves to "try again" for this error */ 1331163953Srrs break; 1332163953Srrs default: 1333163953Srrs /* peer can't handle it... */ 1334163953Srrs switch (param_type) { 1335163953Srrs case SCTP_ADD_IP_ADDRESS: 1336163953Srrs case SCTP_DEL_IP_ADDRESS: 1337163953Srrs stcb->asoc.peer_supports_asconf = 0; 1338163953Srrs break; 1339163953Srrs case SCTP_SET_PRIM_ADDR: 1340163953Srrs stcb->asoc.peer_supports_asconf = 0; 1341163953Srrs break; 1342163953Srrs default: 1343163953Srrs break; 1344163953Srrs } 1345163953Srrs } 1346163953Srrs} 1347163953Srrs 1348163953Srrs/* 1349163953Srrs * process an asconf queue param aparam: parameter to process, will be 1350163953Srrs * removed from the queue flag: 1=success, 0=failure 1351163953Srrs */ 1352163953Srrsstatic void 1353163953Srrssctp_asconf_process_param_ack(struct sctp_tcb *stcb, 1354163953Srrs struct sctp_asconf_addr *aparam, uint32_t flag) 1355163953Srrs{ 1356163953Srrs uint16_t param_type; 1357163953Srrs 1358163953Srrs /* process this param */ 1359163953Srrs param_type = aparam->ap.aph.ph.param_type; 1360163953Srrs switch (param_type) { 1361163953Srrs case SCTP_ADD_IP_ADDRESS: 1362163953Srrs#ifdef SCTP_DEBUG 1363163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 1364163953Srrs printf("process_param_ack: added IP address\n"); 1365163953Srrs } 1366163953Srrs#endif /* SCTP_DEBUG */ 1367163953Srrs sctp_asconf_addr_mgmt_ack(stcb, aparam->ifa, param_type, flag); 1368163953Srrs break; 1369163953Srrs case SCTP_DEL_IP_ADDRESS: 1370163953Srrs#ifdef SCTP_DEBUG 1371163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 1372163953Srrs printf("process_param_ack: deleted IP address\n"); 1373163953Srrs } 1374163953Srrs#endif /* SCTP_DEBUG */ 1375163953Srrs /* nothing really to do... lists already updated */ 1376163953Srrs break; 1377163953Srrs case SCTP_SET_PRIM_ADDR: 1378163953Srrs /* nothing to do... peer may start using this addr */ 1379163953Srrs if (flag == 0) 1380163953Srrs stcb->asoc.peer_supports_asconf = 0; 1381163953Srrs break; 1382163953Srrs default: 1383163953Srrs /* should NEVER happen */ 1384163953Srrs break; 1385163953Srrs } 1386163953Srrs 1387163953Srrs /* remove the param and free it */ 1388163953Srrs TAILQ_REMOVE(&stcb->asoc.asconf_queue, aparam, next); 1389168299Srrs sctp_free_ifa(aparam->ifa); 1390163953Srrs SCTP_FREE(aparam); 1391163953Srrs} 1392163953Srrs 1393163953Srrs/* 1394163953Srrs * cleanup from a bad asconf ack parameter 1395163953Srrs */ 1396163953Srrsstatic void 1397163953Srrssctp_asconf_ack_clear(struct sctp_tcb *stcb) 1398163953Srrs{ 1399163953Srrs /* assume peer doesn't really know how to do asconfs */ 1400163953Srrs stcb->asoc.peer_supports_asconf = 0; 1401163953Srrs /* XXX we could free the pending queue here */ 1402163953Srrs} 1403163953Srrs 1404163953Srrsvoid 1405163953Srrssctp_handle_asconf_ack(struct mbuf *m, int offset, 1406163953Srrs struct sctp_asconf_ack_chunk *cp, struct sctp_tcb *stcb, 1407163953Srrs struct sctp_nets *net) 1408163953Srrs{ 1409163953Srrs struct sctp_association *asoc; 1410163953Srrs uint32_t serial_num; 1411163953Srrs uint16_t ack_length; 1412163953Srrs struct sctp_asconf_paramhdr *aph; 1413163953Srrs struct sctp_asconf_addr *aa, *aa_next; 1414163953Srrs uint32_t last_error_id = 0; /* last error correlation id */ 1415163953Srrs uint32_t id; 1416163953Srrs struct sctp_asconf_addr *ap; 1417163953Srrs 1418163953Srrs /* asconf param buffer */ 1419166675Srrs uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE]; 1420163953Srrs 1421163953Srrs /* verify minimum length */ 1422163953Srrs if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_ack_chunk)) { 1423163953Srrs#ifdef SCTP_DEBUG 1424163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 1425163953Srrs printf("handle_asconf_ack: chunk too small = %xh\n", 1426163953Srrs ntohs(cp->ch.chunk_length)); 1427163953Srrs } 1428163953Srrs#endif /* SCTP_DEBUG */ 1429163953Srrs return; 1430163953Srrs } 1431163953Srrs asoc = &stcb->asoc; 1432163953Srrs serial_num = ntohl(cp->serial_number); 1433163953Srrs 1434163953Srrs /* 1435163953Srrs * NOTE: we may want to handle this differently- currently, we will 1436163953Srrs * abort when we get an ack for the expected serial number + 1 (eg. 1437163953Srrs * we didn't send it), process an ack normally if it is the expected 1438163953Srrs * serial number, and re-send the previous ack for *ALL* other 1439163953Srrs * serial numbers 1440163953Srrs */ 1441163953Srrs 1442163953Srrs /* 1443163953Srrs * if the serial number is the next expected, but I didn't send it, 1444163953Srrs * abort the asoc, since someone probably just hijacked us... 1445163953Srrs */ 1446163953Srrs if (serial_num == (asoc->asconf_seq_out + 1)) { 1447163953Srrs#ifdef SCTP_DEBUG 1448163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 1449163953Srrs printf("handle_asconf_ack: got unexpected next serial number! Aborting asoc!\n"); 1450163953Srrs } 1451163953Srrs#endif /* SCTP_DEBUG */ 1452163953Srrs sctp_abort_an_association(stcb->sctp_ep, stcb, 1453163953Srrs SCTP_CAUSE_ILLEGAL_ASCONF_ACK, NULL); 1454163953Srrs return; 1455163953Srrs } 1456163953Srrs if (serial_num != asoc->asconf_seq_out) { 1457163953Srrs /* got a duplicate/unexpected ASCONF-ACK */ 1458163953Srrs#ifdef SCTP_DEBUG 1459163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 1460163953Srrs printf("handle_asconf_ack: got duplicate/unexpected serial number = %xh (expected = %xh)\n", serial_num, asoc->asconf_seq_out); 1461163953Srrs } 1462163953Srrs#endif /* SCTP_DEBUG */ 1463163953Srrs return; 1464163953Srrs } 1465163953Srrs if (stcb->asoc.asconf_sent == 0) { 1466163953Srrs /* got a unexpected ASCONF-ACK for serial not in flight */ 1467163953Srrs#ifdef SCTP_DEBUG 1468163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 1469163953Srrs printf("handle_asconf_ack: got serial number = %xh but not in flight\n", serial_num); 1470163953Srrs } 1471163953Srrs#endif /* SCTP_DEBUG */ 1472163953Srrs /* nothing to do... duplicate ACK received */ 1473163953Srrs return; 1474163953Srrs } 1475163953Srrs /* stop our timer */ 1476165220Srrs sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_ASCONF + SCTP_LOC_3); 1477163953Srrs 1478163953Srrs /* process the ASCONF-ACK contents */ 1479163953Srrs ack_length = ntohs(cp->ch.chunk_length) - 1480163953Srrs sizeof(struct sctp_asconf_ack_chunk); 1481163953Srrs offset += sizeof(struct sctp_asconf_ack_chunk); 1482163953Srrs /* process through all parameters */ 1483163953Srrs while (ack_length >= sizeof(struct sctp_asconf_paramhdr)) { 1484163953Srrs unsigned int param_length, param_type; 1485163953Srrs 1486163953Srrs /* get pointer to next asconf parameter */ 1487163953Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, 1488163953Srrs sizeof(struct sctp_asconf_paramhdr), aparam_buf); 1489163953Srrs if (aph == NULL) { 1490163953Srrs /* can't get an asconf paramhdr */ 1491163953Srrs sctp_asconf_ack_clear(stcb); 1492163953Srrs return; 1493163953Srrs } 1494163953Srrs param_type = ntohs(aph->ph.param_type); 1495163953Srrs param_length = ntohs(aph->ph.param_length); 1496163953Srrs if (param_length > ack_length) { 1497163953Srrs sctp_asconf_ack_clear(stcb); 1498163953Srrs return; 1499163953Srrs } 1500163953Srrs if (param_length < sizeof(struct sctp_paramhdr)) { 1501163953Srrs sctp_asconf_ack_clear(stcb); 1502163953Srrs return; 1503163953Srrs } 1504163953Srrs /* get the complete parameter... */ 1505163953Srrs if (param_length > sizeof(aparam_buf)) { 1506163953Srrs#ifdef SCTP_DEBUG 1507163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 1508163953Srrs printf("param length (%u) larger than buffer size!\n", param_length); 1509163953Srrs } 1510163953Srrs#endif /* SCTP_DEBUG */ 1511163953Srrs sctp_asconf_ack_clear(stcb); 1512163953Srrs return; 1513163953Srrs } 1514163953Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf); 1515163953Srrs if (aph == NULL) { 1516163953Srrs sctp_asconf_ack_clear(stcb); 1517163953Srrs return; 1518163953Srrs } 1519163953Srrs /* correlation_id is transparent to peer, no ntohl needed */ 1520163953Srrs id = aph->correlation_id; 1521163953Srrs 1522163953Srrs switch (param_type) { 1523163953Srrs case SCTP_ERROR_CAUSE_IND: 1524163953Srrs last_error_id = id; 1525163953Srrs /* find the corresponding asconf param in our queue */ 1526163953Srrs ap = sctp_asconf_find_param(stcb, id); 1527163953Srrs if (ap == NULL) { 1528163953Srrs /* hmm... can't find this in our queue! */ 1529163953Srrs break; 1530163953Srrs } 1531163953Srrs /* process the parameter, failed flag */ 1532163953Srrs sctp_asconf_process_param_ack(stcb, ap, 0); 1533163953Srrs /* process the error response */ 1534163953Srrs sctp_asconf_process_error(stcb, aph); 1535163953Srrs break; 1536163953Srrs case SCTP_SUCCESS_REPORT: 1537163953Srrs /* find the corresponding asconf param in our queue */ 1538163953Srrs ap = sctp_asconf_find_param(stcb, id); 1539163953Srrs if (ap == NULL) { 1540163953Srrs /* hmm... can't find this in our queue! */ 1541163953Srrs break; 1542163953Srrs } 1543163953Srrs /* process the parameter, success flag */ 1544163953Srrs sctp_asconf_process_param_ack(stcb, ap, 1); 1545163953Srrs break; 1546163953Srrs default: 1547163953Srrs break; 1548163953Srrs } /* switch */ 1549163953Srrs 1550163953Srrs /* update remaining ASCONF-ACK message length to process */ 1551163953Srrs ack_length -= SCTP_SIZE32(param_length); 1552163953Srrs if (ack_length <= 0) { 1553163953Srrs /* no more data in the mbuf chain */ 1554163953Srrs break; 1555163953Srrs } 1556163953Srrs offset += SCTP_SIZE32(param_length); 1557163953Srrs } /* while */ 1558163953Srrs 1559163953Srrs /* 1560163953Srrs * if there are any "sent" params still on the queue, these are 1561163953Srrs * implicitly "success", or "failed" (if we got an error back) ... 1562163953Srrs * so process these appropriately 1563163953Srrs * 1564163953Srrs * we assume that the correlation_id's are monotonically increasing 1565163953Srrs * beginning from 1 and that we don't have *that* many outstanding 1566163953Srrs * at any given time 1567163953Srrs */ 1568163953Srrs if (last_error_id == 0) 1569163953Srrs last_error_id--;/* set to "max" value */ 1570163953Srrs for (aa = TAILQ_FIRST(&stcb->asoc.asconf_queue); aa != NULL; 1571163953Srrs aa = aa_next) { 1572163953Srrs aa_next = TAILQ_NEXT(aa, next); 1573163953Srrs if (aa->sent == 1) { 1574163953Srrs /* 1575163953Srrs * implicitly successful or failed if correlation_id 1576163953Srrs * < last_error_id, then success else, failure 1577163953Srrs */ 1578163953Srrs if (aa->ap.aph.correlation_id < last_error_id) 1579163953Srrs sctp_asconf_process_param_ack(stcb, aa, 1580163953Srrs SCTP_SUCCESS_REPORT); 1581163953Srrs else 1582163953Srrs sctp_asconf_process_param_ack(stcb, aa, 1583163953Srrs SCTP_ERROR_CAUSE_IND); 1584163953Srrs } else { 1585163953Srrs /* 1586163953Srrs * since we always process in order (FIFO queue) if 1587163953Srrs * we reach one that hasn't been sent, the rest 1588163953Srrs * should not have been sent either. so, we're 1589163953Srrs * done... 1590163953Srrs */ 1591163953Srrs break; 1592163953Srrs } 1593163953Srrs } 1594163953Srrs 1595163953Srrs /* update the next sequence number to use */ 1596163953Srrs asoc->asconf_seq_out++; 1597163953Srrs /* remove the old ASCONF on our outbound queue */ 1598163953Srrs sctp_toss_old_asconf(stcb); 1599163953Srrs /* clear the sent flag to allow new ASCONFs */ 1600163953Srrs asoc->asconf_sent = 0; 1601163953Srrs if (!TAILQ_EMPTY(&stcb->asoc.asconf_queue)) { 1602163953Srrs /* we have more params, so restart our timer */ 1603163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, 1604163953Srrs stcb, net); 1605163953Srrs } 1606163953Srrs} 1607163953Srrs 1608163953Srrsstatic uint32_t 1609163953Srrssctp_is_scopeid_in_nets(struct sctp_tcb *stcb, struct sockaddr *sa) 1610163953Srrs{ 1611163953Srrs struct sockaddr_in6 *sin6, *net6; 1612163953Srrs struct sctp_nets *net; 1613163953Srrs 1614163953Srrs if (sa->sa_family != AF_INET6) { 1615163953Srrs /* wrong family */ 1616163953Srrs return (0); 1617163953Srrs } 1618163953Srrs sin6 = (struct sockaddr_in6 *)sa; 1619163953Srrs if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) == 0) { 1620163953Srrs /* not link local address */ 1621163953Srrs return (0); 1622163953Srrs } 1623163953Srrs /* hunt through our destination nets list for this scope_id */ 1624163953Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1625163953Srrs if (((struct sockaddr *)(&net->ro._l_addr))->sa_family != 1626163953Srrs AF_INET6) 1627163953Srrs continue; 1628163953Srrs net6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1629163953Srrs if (IN6_IS_ADDR_LINKLOCAL(&net6->sin6_addr) == 0) 1630163953Srrs continue; 1631163953Srrs if (sctp_is_same_scope(sin6, net6)) { 1632163953Srrs /* found one */ 1633163953Srrs return (1); 1634163953Srrs } 1635163953Srrs } 1636163953Srrs /* didn't find one */ 1637163953Srrs return (0); 1638163953Srrs} 1639163953Srrs 1640163953Srrs/* 1641163953Srrs * address management functions 1642163953Srrs */ 1643163953Srrsstatic void 1644163953Srrssctp_addr_mgmt_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 1645167598Srrs struct sctp_ifa *ifa, uint16_t type) 1646163953Srrs{ 1647163953Srrs int status; 1648163953Srrs 1649163953Srrs 1650163953Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0 && 1651163953Srrs sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) { 1652163953Srrs /* subset bound, no ASCONF allowed case, so ignore */ 1653163953Srrs return; 1654163953Srrs } 1655163953Srrs /* 1656163953Srrs * note: we know this is not the subset bound, no ASCONF case eg. 1657163953Srrs * this is boundall or subset bound w/ASCONF allowed 1658163953Srrs */ 1659163953Srrs 1660163953Srrs /* first, make sure it's a good address family */ 1661167598Srrs if (ifa->address.sa.sa_family != AF_INET6 && 1662167598Srrs ifa->address.sa.sa_family != AF_INET) { 1663163953Srrs return; 1664163953Srrs } 1665163953Srrs /* make sure we're "allowed" to add this type of addr */ 1666167598Srrs if (ifa->address.sa.sa_family == AF_INET6) { 1667163953Srrs /* invalid if we're not a v6 endpoint */ 1668163953Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) 1669163953Srrs return; 1670163953Srrs /* is the v6 addr really valid ? */ 1671167598Srrs if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { 1672163953Srrs return; 1673163953Srrs } 1674163953Srrs } 1675163953Srrs /* put this address on the "pending/do not use yet" list */ 1676163953Srrs /* 1677163953Srrs * Note: we do this primarily for the subset bind case We don't have 1678163953Srrs * scoping flags at the EP level, so we must add link local/site 1679163953Srrs * local addresses to the EP, then need to "negate" them here. 1680163953Srrs * Recall that this routine is only called for the subset bound 1681163953Srrs * w/ASCONF allowed case. 1682163953Srrs */ 1683167598Srrs sctp_add_local_addr_assoc(stcb, ifa, 1); 1684163953Srrs /* 1685163953Srrs * check address scope if address is out of scope, don't queue 1686163953Srrs * anything... note: this would leave the address on both inp and 1687163953Srrs * asoc lists 1688163953Srrs */ 1689167598Srrs if (ifa->address.sa.sa_family == AF_INET6) { 1690163953Srrs struct sockaddr_in6 *sin6; 1691163953Srrs 1692167598Srrs sin6 = (struct sockaddr_in6 *)&ifa->address.sin6; 1693163953Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 1694163953Srrs /* we skip unspecifed addresses */ 1695163953Srrs return; 1696163953Srrs } 1697163953Srrs if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { 1698163953Srrs if (stcb->asoc.local_scope == 0) { 1699163953Srrs return; 1700163953Srrs } 1701163953Srrs /* is it the right link local scope? */ 1702167598Srrs if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) { 1703163953Srrs return; 1704163953Srrs } 1705163953Srrs } 1706163953Srrs if (stcb->asoc.site_scope == 0 && 1707163953Srrs IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) { 1708163953Srrs return; 1709163953Srrs } 1710167598Srrs } else if (ifa->address.sa.sa_family == AF_INET) { 1711163953Srrs struct sockaddr_in *sin; 1712163953Srrs struct in6pcb *inp6; 1713163953Srrs 1714163953Srrs inp6 = (struct in6pcb *)&inp->ip_inp.inp; 1715163953Srrs /* invalid if we are a v6 only endpoint */ 1716163953Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 1717166023Srrs SCTP_IPV6_V6ONLY(inp6)) 1718163953Srrs return; 1719163953Srrs 1720167598Srrs sin = (struct sockaddr_in *)&ifa->address.sa; 1721163953Srrs if (sin->sin_addr.s_addr == 0) { 1722163953Srrs /* we skip unspecifed addresses */ 1723163953Srrs return; 1724163953Srrs } 1725163953Srrs if (stcb->asoc.ipv4_local_scope == 0 && 1726163953Srrs IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) { 1727163953Srrs return; 1728163953Srrs } 1729163953Srrs } else { 1730163953Srrs /* else, not AF_INET or AF_INET6, so skip */ 1731163953Srrs return; 1732163953Srrs } 1733163953Srrs 1734163953Srrs /* queue an asconf for this address add/delete */ 1735163953Srrs if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF)) { 1736163953Srrs /* does the peer do asconf? */ 1737163953Srrs if (stcb->asoc.peer_supports_asconf) { 1738163953Srrs /* queue an asconf for this addr */ 1739163953Srrs status = sctp_asconf_queue_add(stcb, ifa, type); 1740163953Srrs /* 1741163953Srrs * if queued ok, and in correct state, set the 1742163953Srrs * ASCONF timer if in non-open state, we will set 1743163953Srrs * this timer when the state does go open and do all 1744163953Srrs * the asconf's 1745163953Srrs */ 1746163953Srrs if (status == 0 && 1747163953Srrs SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) { 1748163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, inp, 1749163953Srrs stcb, stcb->asoc.primary_destination); 1750163953Srrs } 1751163953Srrs } 1752163953Srrs } 1753163953Srrs} 1754163953Srrs 1755167598Srrs 1756167598Srrsint 1757167598Srrssctp_iterator_ep(struct sctp_inpcb *inp, void *ptr, uint32_t val) 1758163953Srrs{ 1759167598Srrs struct sctp_asconf_iterator *asc; 1760167598Srrs struct sctp_ifa *ifa; 1761167598Srrs struct sctp_laddr *l; 1762167598Srrs int type; 1763167598Srrs int cnt_invalid = 0; 1764163953Srrs 1765167598Srrs asc = (struct sctp_asconf_iterator *)ptr; 1766167598Srrs LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) { 1767167598Srrs ifa = l->ifa; 1768167598Srrs type = l->action; 1769167598Srrs if (ifa->address.sa.sa_family == AF_INET6) { 1770167598Srrs /* invalid if we're not a v6 endpoint */ 1771167598Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 1772167598Srrs cnt_invalid++; 1773167598Srrs if (asc->cnt == cnt_invalid) 1774167598Srrs return (1); 1775167598Srrs else 1776167598Srrs continue; 1777167598Srrs } 1778167598Srrs } else if (ifa->address.sa.sa_family == AF_INET) { 1779167598Srrs /* invalid if we are a v6 only endpoint */ 1780167598Srrs struct in6pcb *inp6; 1781163953Srrs 1782167598Srrs inp6 = (struct in6pcb *)&inp->ip_inp.inp; 1783167598Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 1784167598Srrs SCTP_IPV6_V6ONLY(inp6)) { 1785167598Srrs cnt_invalid++; 1786167598Srrs if (asc->cnt == cnt_invalid) 1787167598Srrs return (1); 1788167598Srrs else 1789167598Srrs continue; 1790163953Srrs } 1791163953Srrs } else { 1792167598Srrs /* invalid address family */ 1793167598Srrs cnt_invalid++; 1794167598Srrs if (asc->cnt == cnt_invalid) 1795167598Srrs return (1); 1796167598Srrs else 1797167598Srrs continue; 1798163953Srrs } 1799163953Srrs } 1800167598Srrs return (0); 1801163953Srrs} 1802163953Srrs 1803167598Srrsint 1804167598Srrssctp_iterator_ep_end(struct sctp_inpcb *inp, void *ptr, uint32_t val) 1805163953Srrs{ 1806167598Srrs struct sctp_ifa *ifa; 1807167598Srrs struct sctp_asconf_iterator *asc; 1808167598Srrs struct sctp_laddr *laddr, *nladdr, *l; 1809163953Srrs 1810167598Srrs /* Only for specific case not bound all */ 1811167598Srrs asc = (struct sctp_asconf_iterator *)ptr; 1812167598Srrs LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) { 1813167598Srrs ifa = l->ifa; 1814167598Srrs if (l->action == SCTP_ADD_IP_ADDRESS) { 1815167598Srrs LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1816167598Srrs if (laddr->ifa == ifa) { 1817167598Srrs laddr->action = 0; 1818167598Srrs break; 1819167598Srrs } 1820167598Srrs } 1821167598Srrs } else if (l->action == SCTP_DEL_IP_ADDRESS) { 1822167598Srrs laddr = LIST_FIRST(&inp->sctp_addr_list); 1823167598Srrs while (laddr) { 1824167598Srrs nladdr = LIST_NEXT(laddr, sctp_nxt_addr); 1825167598Srrs /* remove only after all guys are done */ 1826167598Srrs if (laddr->ifa == ifa) { 1827167598Srrs sctp_del_local_addr_ep(inp, ifa); 1828167598Srrs } 1829167598Srrs laddr = nladdr; 1830167598Srrs } 1831167598Srrs } 1832163953Srrs } 1833167598Srrs return (0); 1834163953Srrs} 1835163953Srrs 1836167598Srrsvoid 1837167598Srrssctp_iterator_stcb(struct sctp_inpcb *inp, struct sctp_tcb *stcb, void *ptr, 1838167598Srrs uint32_t val) 1839163953Srrs{ 1840167598Srrs struct sctp_asconf_iterator *asc; 1841167598Srrs struct sctp_ifa *ifa; 1842167598Srrs struct sctp_laddr *l; 1843167598Srrs int cnt_invalid = 0; 1844167598Srrs int type, status; 1845163953Srrs 1846167598Srrs asc = (struct sctp_asconf_iterator *)ptr; 1847167598Srrs LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) { 1848167598Srrs ifa = l->ifa; 1849167598Srrs type = l->action; 1850167598Srrs /* Same checks again for assoc */ 1851167598Srrs if (ifa->address.sa.sa_family == AF_INET6) { 1852167598Srrs /* invalid if we're not a v6 endpoint */ 1853167598Srrs struct sockaddr_in6 *sin6; 1854163953Srrs 1855167598Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 1856167598Srrs cnt_invalid++; 1857167598Srrs if (asc->cnt == cnt_invalid) 1858167598Srrs return; 1859167598Srrs else 1860167598Srrs continue; 1861167598Srrs } 1862167598Srrs sin6 = (struct sockaddr_in6 *)&ifa->address.sin6; 1863167598Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 1864167598Srrs /* we skip unspecifed addresses */ 1865167598Srrs continue; 1866167598Srrs } 1867167598Srrs if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { 1868167598Srrs if (stcb->asoc.local_scope == 0) { 1869167598Srrs continue; 1870167598Srrs } 1871167598Srrs /* is it the right link local scope? */ 1872167598Srrs if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) { 1873167598Srrs continue; 1874167598Srrs } 1875167598Srrs } 1876167598Srrs } else if (ifa->address.sa.sa_family == AF_INET) { 1877167598Srrs /* invalid if we are a v6 only endpoint */ 1878167598Srrs struct in6pcb *inp6; 1879167598Srrs struct sockaddr_in *sin; 1880163953Srrs 1881167598Srrs inp6 = (struct in6pcb *)&inp->ip_inp.inp; 1882167598Srrs /* invalid if we are a v6 only endpoint */ 1883167598Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 1884167598Srrs SCTP_IPV6_V6ONLY(inp6)) 1885167598Srrs continue; 1886167598Srrs 1887167598Srrs sin = (struct sockaddr_in *)&ifa->address.sa; 1888167598Srrs if (sin->sin_addr.s_addr == 0) { 1889167598Srrs /* we skip unspecifed addresses */ 1890167598Srrs continue; 1891167598Srrs } 1892167598Srrs if (stcb->asoc.ipv4_local_scope == 0 && 1893167598Srrs IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) { 1894167598Srrs continue;; 1895167598Srrs } 1896167598Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 1897167598Srrs SCTP_IPV6_V6ONLY(inp6)) { 1898167598Srrs cnt_invalid++; 1899167598Srrs if (asc->cnt == cnt_invalid) 1900167598Srrs return; 1901167598Srrs else 1902167598Srrs continue; 1903167598Srrs } 1904163953Srrs } else { 1905167598Srrs /* invalid address family */ 1906167598Srrs cnt_invalid++; 1907167598Srrs if (asc->cnt == cnt_invalid) 1908163953Srrs return; 1909167598Srrs else 1910167598Srrs continue; 1911163953Srrs } 1912163953Srrs 1913167598Srrs /* put this address on the "pending/do not use yet" list */ 1914167598Srrs if (type == SCTP_ADD_IP_ADDRESS) { 1915167598Srrs sctp_add_local_addr_assoc(stcb, ifa, 1); 1916167598Srrs } else if (type == SCTP_DEL_IP_ADDRESS) { 1917163953Srrs struct sctp_nets *net; 1918163953Srrs 1919163953Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1920169352Srrs sctp_rtentry_t *rt; 1921163953Srrs 1922163953Srrs /* delete this address if cached */ 1923167598Srrs if (net->ro._s_addr && 1924167598Srrs (net->ro._s_addr->ifa == ifa)) { 1925167598Srrs sctp_free_ifa(net->ro._s_addr); 1926167598Srrs net->ro._s_addr = NULL; 1927167598Srrs net->src_addr_selected = 0; 1928167598Srrs rt = net->ro.ro_rt; 1929167598Srrs if (rt) { 1930167598Srrs RTFREE(rt); 1931167598Srrs net->ro.ro_rt = NULL; 1932167598Srrs } 1933167598Srrs /* 1934167598Srrs * Now we deleted our src address, 1935167598Srrs * should we not also now reset the 1936167598Srrs * cwnd/rto to start as if its a new 1937167598Srrs * address? 1938167598Srrs */ 1939167598Srrs sctp_set_initial_cc_param(stcb, net); 1940167598Srrs net->RTO = stcb->asoc.initial_rto; 1941167598Srrs 1942163953Srrs } 1943167598Srrs } 1944167598Srrs } else if (type == SCTP_SET_PRIM_ADDR) { 1945167598Srrs if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) { 1946167598Srrs /* 1947167598Srrs * must validate the ifa in question is in 1948167598Srrs * the ep 1949167598Srrs */ 1950167598Srrs if (sctp_is_addr_in_ep(stcb->sctp_ep, ifa) == 0) { 1951167598Srrs continue; 1952163953Srrs } 1953167598Srrs } else { 1954167598Srrs /* Need to check scopes for this guy */ 1955167598Srrs if (sctp_is_address_in_scope(ifa, 1956167598Srrs stcb->asoc.ipv4_addr_legal, 1957167598Srrs stcb->asoc.ipv6_addr_legal, 1958167598Srrs stcb->asoc.loopback_scope, 1959167598Srrs stcb->asoc.ipv4_local_scope, 1960167598Srrs stcb->asoc.local_scope, 1961167598Srrs stcb->asoc.site_scope, 0) == 0) { 1962167598Srrs continue; 1963167598Srrs } 1964163953Srrs } 1965167598Srrs 1966163953Srrs } 1967167598Srrs /* queue an asconf for this address add/delete */ 1968167598Srrs if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF)) { 1969167598Srrs /* does the peer do asconf? */ 1970167598Srrs if (stcb->asoc.peer_supports_asconf) { 1971167598Srrs /* queue an asconf for this addr */ 1972167598Srrs 1973167598Srrs status = sctp_asconf_queue_add(stcb, ifa, type); 1974167598Srrs /* 1975167598Srrs * if queued ok, and in correct state, set 1976167598Srrs * the ASCONF timer if in non-open state, we 1977167598Srrs * will set this timer when the state does 1978167598Srrs * go open and do all the asconf's 1979167598Srrs */ 1980167598Srrs if (status == 0 && 1981167598Srrs SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) { 1982167598Srrs sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, inp, 1983167598Srrs stcb, stcb->asoc.primary_destination); 1984167598Srrs } 1985167598Srrs } 1986167598Srrs } 1987163953Srrs } 1988163953Srrs} 1989163953Srrs 1990167598Srrsvoid 1991167598Srrssctp_iterator_end(void *ptr, uint32_t val) 1992167598Srrs{ 1993167598Srrs struct sctp_asconf_iterator *asc; 1994167598Srrs struct sctp_ifa *ifa; 1995167598Srrs struct sctp_laddr *l, *l_next; 1996167598Srrs 1997167598Srrs asc = (struct sctp_asconf_iterator *)ptr; 1998167598Srrs l = LIST_FIRST(&asc->list_of_work); 1999167598Srrs while (l != NULL) { 2000167598Srrs l_next = LIST_NEXT(l, sctp_nxt_addr); 2001167598Srrs ifa = l->ifa; 2002167598Srrs if (l->action == SCTP_ADD_IP_ADDRESS) { 2003167598Srrs /* Clear the defer use flag */ 2004167598Srrs ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE; 2005167598Srrs } 2006167598Srrs sctp_free_ifa(ifa); 2007167598Srrs SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_laddr, l); 2008167598Srrs SCTP_DECR_LADDR_COUNT(); 2009167598Srrs l = l_next; 2010167598Srrs } 2011167598Srrs SCTP_FREE(asc); 2012167598Srrs} 2013167598Srrs 2014163953Srrs/* 2015163953Srrs * sa is the sockaddr to ask the peer to set primary to returns: 0 = 2016163953Srrs * completed, -1 = error 2017163953Srrs */ 2018163953Srrsint32_t 2019163953Srrssctp_set_primary_ip_address_sa(struct sctp_tcb *stcb, struct sockaddr *sa) 2020163953Srrs{ 2021163953Srrs /* NOTE: we currently don't check the validity of the address! */ 2022163953Srrs 2023163953Srrs /* queue an ASCONF:SET_PRIM_ADDR to be sent */ 2024163953Srrs if (!sctp_asconf_queue_add_sa(stcb, sa, SCTP_SET_PRIM_ADDR)) { 2025163953Srrs /* set primary queuing succeeded */ 2026163953Srrs if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) { 2027163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, 2028163953Srrs stcb->sctp_ep, stcb, 2029163953Srrs stcb->asoc.primary_destination); 2030163953Srrs } 2031163953Srrs#ifdef SCTP_DEBUG 2032163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 2033163953Srrs printf("set_primary_ip_address_sa: queued on tcb=%p, ", 2034163953Srrs stcb); 2035163953Srrs sctp_print_address(sa); 2036163953Srrs } 2037163953Srrs#endif /* SCTP_DEBUG */ 2038163953Srrs } else { 2039163953Srrs#ifdef SCTP_DEBUG 2040163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 2041163953Srrs printf("set_primary_ip_address_sa: failed to add to queue on tcb=%p, ", 2042163953Srrs stcb); 2043163953Srrs sctp_print_address(sa); 2044163953Srrs } 2045163953Srrs#endif /* SCTP_DEBUG */ 2046163953Srrs return (-1); 2047163953Srrs } 2048163953Srrs return (0); 2049163953Srrs} 2050163953Srrs 2051163953Srrsvoid 2052167598Srrssctp_set_primary_ip_address(struct sctp_ifa *ifa) 2053163953Srrs{ 2054163953Srrs struct sctp_inpcb *inp; 2055163953Srrs 2056163953Srrs /* go through all our PCB's */ 2057163953Srrs LIST_FOREACH(inp, &sctppcbinfo.listhead, sctp_list) { 2058163953Srrs struct sctp_tcb *stcb; 2059163953Srrs 2060163953Srrs /* process for all associations for this endpoint */ 2061163953Srrs LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { 2062163953Srrs /* queue an ASCONF:SET_PRIM_ADDR to be sent */ 2063163953Srrs if (!sctp_asconf_queue_add(stcb, ifa, 2064163953Srrs SCTP_SET_PRIM_ADDR)) { 2065163953Srrs /* set primary queuing succeeded */ 2066163953Srrs if (SCTP_GET_STATE(&stcb->asoc) == 2067163953Srrs SCTP_STATE_OPEN) { 2068163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, 2069163953Srrs stcb->sctp_ep, stcb, 2070163953Srrs stcb->asoc.primary_destination); 2071163953Srrs } 2072163953Srrs#ifdef SCTP_DEBUG 2073163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 2074163953Srrs printf("set_primary_ip_address: queued on stcb=%p, ", 2075163953Srrs stcb); 2076167598Srrs sctp_print_address(&ifa->address.sa); 2077163953Srrs } 2078163953Srrs#endif /* SCTP_DEBUG */ 2079163953Srrs } 2080163953Srrs } /* for each stcb */ 2081163953Srrs } /* for each inp */ 2082163953Srrs} 2083163953Srrs 2084163953Srrsstatic struct sockaddr * 2085163953Srrssctp_find_valid_localaddr(struct sctp_tcb *stcb) 2086163953Srrs{ 2087167598Srrs struct sctp_vrf *vrf = NULL; 2088167598Srrs struct sctp_ifn *sctp_ifn; 2089167598Srrs struct sctp_ifa *sctp_ifa; 2090163953Srrs 2091167598Srrs vrf = sctp_find_vrf(stcb->asoc.vrf_id); 2092167598Srrs LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { 2093167598Srrs if (stcb->asoc.loopback_scope == 0 && 2094167598Srrs SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { 2095163953Srrs /* Skip if loopback_scope not set */ 2096163953Srrs continue; 2097163953Srrs } 2098167598Srrs LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { 2099167598Srrs if (sctp_ifa->address.sa.sa_family == AF_INET && 2100163953Srrs stcb->asoc.ipv4_addr_legal) { 2101163953Srrs struct sockaddr_in *sin; 2102163953Srrs 2103167598Srrs sin = (struct sockaddr_in *)&sctp_ifa->address.sa; 2104163953Srrs if (sin->sin_addr.s_addr == 0) { 2105163953Srrs /* skip unspecifed addresses */ 2106163953Srrs continue; 2107163953Srrs } 2108163953Srrs if (stcb->asoc.ipv4_local_scope == 0 && 2109163953Srrs IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) 2110163953Srrs continue; 2111163953Srrs 2112167598Srrs if (sctp_is_addr_restricted(stcb, sctp_ifa)) 2113163953Srrs continue; 2114163953Srrs /* found a valid local v4 address to use */ 2115167598Srrs return (&sctp_ifa->address.sa); 2116167598Srrs } else if (sctp_ifa->address.sa.sa_family == AF_INET6 && 2117163953Srrs stcb->asoc.ipv6_addr_legal) { 2118163953Srrs struct sockaddr_in6 *sin6; 2119163953Srrs 2120167598Srrs if (sctp_ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { 2121163953Srrs continue; 2122167598Srrs } 2123167598Srrs sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa; 2124163953Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 2125163953Srrs /* we skip unspecifed addresses */ 2126163953Srrs continue; 2127163953Srrs } 2128163953Srrs if (stcb->asoc.local_scope == 0 && 2129163953Srrs IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) 2130163953Srrs continue; 2131163953Srrs if (stcb->asoc.site_scope == 0 && 2132163953Srrs IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) 2133163953Srrs continue; 2134163953Srrs 2135163953Srrs /* found a valid local v6 address to use */ 2136167598Srrs return (&sctp_ifa->address.sa); 2137163953Srrs } 2138163953Srrs } 2139163953Srrs } 2140163953Srrs /* no valid addresses found */ 2141163953Srrs return (NULL); 2142163953Srrs} 2143163953Srrs 2144163953Srrsstatic struct sockaddr * 2145163953Srrssctp_find_valid_localaddr_ep(struct sctp_tcb *stcb) 2146163953Srrs{ 2147163953Srrs struct sctp_laddr *laddr; 2148163953Srrs 2149163953Srrs LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) { 2150163953Srrs if (laddr->ifa == NULL) { 2151163953Srrs continue; 2152163953Srrs } 2153167598Srrs if (laddr->ifa == NULL) { 2154163953Srrs continue; 2155163953Srrs } 2156163953Srrs /* is the address restricted ? */ 2157167598Srrs if (sctp_is_addr_restricted(stcb, laddr->ifa)) 2158163953Srrs continue; 2159163953Srrs 2160163953Srrs /* found a valid local address to use */ 2161167598Srrs return (&laddr->ifa->address.sa); 2162163953Srrs } 2163163953Srrs /* no valid addresses found */ 2164163953Srrs return (NULL); 2165163953Srrs} 2166163953Srrs 2167163953Srrs/* 2168163953Srrs * builds an ASCONF chunk from queued ASCONF params returns NULL on error (no 2169163953Srrs * mbuf, no ASCONF params queued, etc) 2170163953Srrs */ 2171163953Srrsstruct mbuf * 2172165647Srrssctp_compose_asconf(struct sctp_tcb *stcb, int *retlen) 2173163953Srrs{ 2174163953Srrs struct mbuf *m_asconf, *m_asconf_chk; 2175163953Srrs struct sctp_asconf_addr *aa; 2176163953Srrs struct sctp_asconf_chunk *acp; 2177163953Srrs struct sctp_asconf_paramhdr *aph; 2178163953Srrs struct sctp_asconf_addr_param *aap; 2179163953Srrs uint32_t p_length; 2180163953Srrs uint32_t correlation_id = 1; /* 0 is reserved... */ 2181163953Srrs caddr_t ptr, lookup_ptr; 2182163953Srrs uint8_t lookup_used = 0; 2183163953Srrs 2184163953Srrs /* are there any asconf params to send? */ 2185163953Srrs if (TAILQ_EMPTY(&stcb->asoc.asconf_queue)) { 2186163953Srrs return (NULL); 2187163953Srrs } 2188163953Srrs /* 2189163953Srrs * get a chunk header mbuf and a cluster for the asconf params since 2190163953Srrs * it's simpler to fill in the asconf chunk header lookup address on 2191163953Srrs * the fly 2192163953Srrs */ 2193165647Srrs m_asconf_chk = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_chunk), 0, M_DONTWAIT, 1, MT_DATA); 2194163953Srrs if (m_asconf_chk == NULL) { 2195163953Srrs /* no mbuf's */ 2196163953Srrs#ifdef SCTP_DEBUG 2197163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) 2198163953Srrs printf("compose_asconf: couldn't get chunk mbuf!\n"); 2199163953Srrs#endif /* SCTP_DEBUG */ 2200163953Srrs return (NULL); 2201163953Srrs } 2202165647Srrs m_asconf = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA); 2203163953Srrs if (m_asconf == NULL) { 2204163953Srrs /* no mbuf's */ 2205163953Srrs#ifdef SCTP_DEBUG 2206163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) 2207163953Srrs printf("compose_asconf: couldn't get mbuf!\n"); 2208163953Srrs#endif /* SCTP_DEBUG */ 2209163953Srrs sctp_m_freem(m_asconf_chk); 2210163953Srrs return (NULL); 2211163953Srrs } 2212165647Srrs SCTP_BUF_LEN(m_asconf_chk) = sizeof(struct sctp_asconf_chunk); 2213165647Srrs SCTP_BUF_LEN(m_asconf) = 0; 2214163953Srrs acp = mtod(m_asconf_chk, struct sctp_asconf_chunk *); 2215163953Srrs bzero(acp, sizeof(struct sctp_asconf_chunk)); 2216163953Srrs /* save pointers to lookup address and asconf params */ 2217163953Srrs lookup_ptr = (caddr_t)(acp + 1); /* after the header */ 2218163953Srrs ptr = mtod(m_asconf, caddr_t); /* beginning of cluster */ 2219163953Srrs 2220163953Srrs /* fill in chunk header info */ 2221163953Srrs acp->ch.chunk_type = SCTP_ASCONF; 2222163953Srrs acp->ch.chunk_flags = 0; 2223163953Srrs acp->serial_number = htonl(stcb->asoc.asconf_seq_out); 2224163953Srrs 2225163953Srrs /* add parameters... up to smallest MTU allowed */ 2226163953Srrs TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) { 2227163953Srrs /* get the parameter length */ 2228163953Srrs p_length = SCTP_SIZE32(aa->ap.aph.ph.param_length); 2229163953Srrs /* will it fit in current chunk? */ 2230165647Srrs if (SCTP_BUF_LEN(m_asconf) + p_length > stcb->asoc.smallest_mtu) { 2231163953Srrs /* won't fit, so we're done with this chunk */ 2232163953Srrs break; 2233163953Srrs } 2234163953Srrs /* assign (and store) a correlation id */ 2235163953Srrs aa->ap.aph.correlation_id = correlation_id++; 2236163953Srrs 2237163953Srrs /* 2238163953Srrs * fill in address if we're doing a delete this is a simple 2239163953Srrs * way for us to fill in the correlation address, which 2240163953Srrs * should only be used by the peer if we're deleting our 2241163953Srrs * source address and adding a new address (e.g. renumbering 2242163953Srrs * case) 2243163953Srrs */ 2244163953Srrs if (lookup_used == 0 && 2245163953Srrs aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) { 2246163953Srrs struct sctp_ipv6addr_param *lookup; 2247163953Srrs uint16_t p_size, addr_size; 2248163953Srrs 2249163953Srrs lookup = (struct sctp_ipv6addr_param *)lookup_ptr; 2250163953Srrs lookup->ph.param_type = 2251163953Srrs htons(aa->ap.addrp.ph.param_type); 2252163953Srrs if (aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) { 2253163953Srrs /* copy IPv6 address */ 2254163953Srrs p_size = sizeof(struct sctp_ipv6addr_param); 2255163953Srrs addr_size = sizeof(struct in6_addr); 2256163953Srrs } else { 2257163953Srrs /* copy IPv4 address */ 2258163953Srrs p_size = sizeof(struct sctp_ipv4addr_param); 2259163953Srrs addr_size = sizeof(struct in_addr); 2260163953Srrs } 2261163953Srrs lookup->ph.param_length = htons(SCTP_SIZE32(p_size)); 2262163953Srrs memcpy(lookup->addr, &aa->ap.addrp.addr, addr_size); 2263165647Srrs SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size); 2264163953Srrs lookup_used = 1; 2265163953Srrs } 2266163953Srrs /* copy into current space */ 2267163953Srrs memcpy(ptr, &aa->ap, p_length); 2268163953Srrs 2269163953Srrs /* network elements and update lengths */ 2270163953Srrs aph = (struct sctp_asconf_paramhdr *)ptr; 2271163953Srrs aap = (struct sctp_asconf_addr_param *)ptr; 2272163953Srrs /* correlation_id is transparent to peer, no htonl needed */ 2273163953Srrs aph->ph.param_type = htons(aph->ph.param_type); 2274163953Srrs aph->ph.param_length = htons(aph->ph.param_length); 2275163953Srrs aap->addrp.ph.param_type = htons(aap->addrp.ph.param_type); 2276163953Srrs aap->addrp.ph.param_length = htons(aap->addrp.ph.param_length); 2277163953Srrs 2278165647Srrs SCTP_BUF_LEN(m_asconf) += SCTP_SIZE32(p_length); 2279163953Srrs ptr += SCTP_SIZE32(p_length); 2280163953Srrs 2281163953Srrs /* 2282163953Srrs * these params are removed off the pending list upon 2283163953Srrs * getting an ASCONF-ACK back from the peer, just set flag 2284163953Srrs */ 2285163953Srrs aa->sent = 1; 2286163953Srrs } 2287163953Srrs /* check to see if the lookup addr has been populated yet */ 2288163953Srrs if (lookup_used == 0) { 2289163953Srrs /* NOTE: if the address param is optional, can skip this... */ 2290163953Srrs /* add any valid (existing) address... */ 2291163953Srrs struct sctp_ipv6addr_param *lookup; 2292163953Srrs uint16_t p_size, addr_size; 2293163953Srrs struct sockaddr *found_addr; 2294163953Srrs caddr_t addr_ptr; 2295163953Srrs 2296163953Srrs if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) 2297163953Srrs found_addr = sctp_find_valid_localaddr(stcb); 2298163953Srrs else 2299163953Srrs found_addr = sctp_find_valid_localaddr_ep(stcb); 2300163953Srrs 2301163953Srrs lookup = (struct sctp_ipv6addr_param *)lookup_ptr; 2302163953Srrs if (found_addr != NULL) { 2303163953Srrs if (found_addr->sa_family == AF_INET6) { 2304163953Srrs /* copy IPv6 address */ 2305163953Srrs lookup->ph.param_type = 2306163953Srrs htons(SCTP_IPV6_ADDRESS); 2307163953Srrs p_size = sizeof(struct sctp_ipv6addr_param); 2308163953Srrs addr_size = sizeof(struct in6_addr); 2309163953Srrs addr_ptr = (caddr_t)&((struct sockaddr_in6 *) 2310163953Srrs found_addr)->sin6_addr; 2311163953Srrs } else { 2312163953Srrs /* copy IPv4 address */ 2313163953Srrs lookup->ph.param_type = 2314163953Srrs htons(SCTP_IPV4_ADDRESS); 2315163953Srrs p_size = sizeof(struct sctp_ipv4addr_param); 2316163953Srrs addr_size = sizeof(struct in_addr); 2317163953Srrs addr_ptr = (caddr_t)&((struct sockaddr_in *) 2318163953Srrs found_addr)->sin_addr; 2319163953Srrs } 2320163953Srrs lookup->ph.param_length = htons(SCTP_SIZE32(p_size)); 2321163953Srrs memcpy(lookup->addr, addr_ptr, addr_size); 2322165647Srrs SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size); 2323163953Srrs lookup_used = 1; 2324163953Srrs } else { 2325163953Srrs /* uh oh... don't have any address?? */ 2326163953Srrs#ifdef SCTP_DEBUG 2327163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) 2328163953Srrs printf("compose_asconf: no lookup addr!\n"); 2329163953Srrs#endif /* SCTP_DEBUG */ 2330163953Srrs /* for now, we send a IPv4 address of 0.0.0.0 */ 2331163953Srrs lookup->ph.param_type = htons(SCTP_IPV4_ADDRESS); 2332163953Srrs lookup->ph.param_length = htons(SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param))); 2333163953Srrs bzero(lookup->addr, sizeof(struct in_addr)); 2334165647Srrs SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param)); 2335163953Srrs lookup_used = 1; 2336163953Srrs } 2337163953Srrs } 2338163953Srrs /* chain it all together */ 2339165647Srrs SCTP_BUF_NEXT(m_asconf_chk) = m_asconf; 2340165647Srrs *retlen = acp->ch.chunk_length = ntohs(SCTP_BUF_LEN(m_asconf_chk) + SCTP_BUF_LEN(m_asconf)); 2341163953Srrs 2342163953Srrs /* update "sent" flag */ 2343163953Srrs stcb->asoc.asconf_sent++; 2344163953Srrs 2345163953Srrs return (m_asconf_chk); 2346163953Srrs} 2347163953Srrs 2348163953Srrs/* 2349163953Srrs * section to handle address changes before an association is up eg. changes 2350163953Srrs * during INIT/INIT-ACK/COOKIE-ECHO handshake 2351163953Srrs */ 2352163953Srrs 2353163953Srrs/* 2354163953Srrs * processes the (local) addresses in the INIT-ACK chunk 2355163953Srrs */ 2356163953Srrsstatic void 2357163953Srrssctp_process_initack_addresses(struct sctp_tcb *stcb, struct mbuf *m, 2358163953Srrs unsigned int offset, unsigned int length) 2359163953Srrs{ 2360163953Srrs struct sctp_paramhdr tmp_param, *ph; 2361163953Srrs uint16_t plen, ptype; 2362167598Srrs struct sctp_ifa *sctp_ifa; 2363163953Srrs struct sctp_ipv6addr_param addr_store; 2364163953Srrs struct sockaddr_in6 sin6; 2365163953Srrs struct sockaddr_in sin; 2366163953Srrs struct sockaddr *sa; 2367167598Srrs uint32_t vrf_id; 2368163953Srrs 2369163953Srrs#ifdef SCTP_DEBUG 2370163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF2) { 2371163953Srrs printf("processing init-ack addresses\n"); 2372163953Srrs } 2373163953Srrs#endif /* SCTP_DEBUG */ 2374163953Srrs 2375163953Srrs /* convert to upper bound */ 2376163953Srrs length += offset; 2377163953Srrs 2378163953Srrs if ((offset + sizeof(struct sctp_paramhdr)) > length) { 2379163953Srrs return; 2380163953Srrs } 2381163953Srrs /* init the addresses */ 2382163953Srrs bzero(&sin6, sizeof(sin6)); 2383163953Srrs sin6.sin6_family = AF_INET6; 2384163953Srrs sin6.sin6_len = sizeof(sin6); 2385163953Srrs sin6.sin6_port = stcb->rport; 2386163953Srrs 2387163953Srrs bzero(&sin, sizeof(sin)); 2388163953Srrs sin.sin_len = sizeof(sin); 2389163953Srrs sin.sin_family = AF_INET; 2390163953Srrs sin.sin_port = stcb->rport; 2391163953Srrs 2392163953Srrs /* go through the addresses in the init-ack */ 2393163953Srrs ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset, 2394163953Srrs sizeof(struct sctp_paramhdr), (uint8_t *) & tmp_param); 2395163953Srrs while (ph != NULL) { 2396163953Srrs ptype = ntohs(ph->param_type); 2397163953Srrs plen = ntohs(ph->param_length); 2398163953Srrs if (ptype == SCTP_IPV6_ADDRESS) { 2399163953Srrs struct sctp_ipv6addr_param *a6p; 2400163953Srrs 2401163953Srrs /* get the entire IPv6 address param */ 2402163953Srrs a6p = (struct sctp_ipv6addr_param *) 2403163953Srrs sctp_m_getptr(m, offset, 2404163953Srrs sizeof(struct sctp_ipv6addr_param), 2405163953Srrs (uint8_t *) & addr_store); 2406163953Srrs if (plen != sizeof(struct sctp_ipv6addr_param) || 2407163953Srrs a6p == NULL) { 2408163953Srrs return; 2409163953Srrs } 2410163953Srrs memcpy(&sin6.sin6_addr, a6p->addr, 2411163953Srrs sizeof(struct in6_addr)); 2412163953Srrs sa = (struct sockaddr *)&sin6; 2413163953Srrs } else if (ptype == SCTP_IPV4_ADDRESS) { 2414163953Srrs struct sctp_ipv4addr_param *a4p; 2415163953Srrs 2416163953Srrs /* get the entire IPv4 address param */ 2417167598Srrs a4p = (struct sctp_ipv4addr_param *)sctp_m_getptr(m, offset, 2418167598Srrs sizeof(struct sctp_ipv4addr_param), 2419167598Srrs (uint8_t *) & addr_store); 2420163953Srrs if (plen != sizeof(struct sctp_ipv4addr_param) || 2421163953Srrs a4p == NULL) { 2422163953Srrs return; 2423163953Srrs } 2424163953Srrs sin.sin_addr.s_addr = a4p->addr; 2425163953Srrs sa = (struct sockaddr *)&sin; 2426163953Srrs } else { 2427163953Srrs goto next_addr; 2428163953Srrs } 2429163953Srrs 2430163953Srrs /* see if this address really (still) exists */ 2431168299Srrs if (stcb) { 2432168299Srrs vrf_id = stcb->asoc.vrf_id; 2433168299Srrs } else { 2434168299Srrs vrf_id = SCTP_DEFAULT_VRFID; 2435168299Srrs } 2436168299Srrs 2437167598Srrs sctp_ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0); 2438167598Srrs if (sctp_ifa == NULL) { 2439163953Srrs /* address doesn't exist anymore */ 2440163953Srrs int status; 2441163953Srrs 2442163953Srrs /* are ASCONFs allowed ? */ 2443163953Srrs if ((sctp_is_feature_on(stcb->sctp_ep, 2444163953Srrs SCTP_PCB_FLAGS_DO_ASCONF)) && 2445163953Srrs stcb->asoc.peer_supports_asconf) { 2446163953Srrs /* queue an ASCONF DEL_IP_ADDRESS */ 2447163953Srrs status = sctp_asconf_queue_add_sa(stcb, sa, 2448163953Srrs SCTP_DEL_IP_ADDRESS); 2449163953Srrs /* 2450163953Srrs * if queued ok, and in correct state, set 2451163953Srrs * the ASCONF timer 2452163953Srrs */ 2453163953Srrs if (status == 0 && 2454163953Srrs SCTP_GET_STATE(&stcb->asoc) == 2455163953Srrs SCTP_STATE_OPEN) { 2456163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, 2457163953Srrs stcb->sctp_ep, stcb, 2458163953Srrs stcb->asoc.primary_destination); 2459163953Srrs } 2460163953Srrs } 2461163953Srrs } 2462163953Srrsnext_addr: 2463163953Srrs /* 2464163953Srrs * Sanity check: Make sure the length isn't 0, otherwise 2465163953Srrs * we'll be stuck in this loop for a long time... 2466163953Srrs */ 2467163953Srrs if (SCTP_SIZE32(plen) == 0) { 2468163953Srrs#ifdef SCTP_DEBUG 2469163953Srrs printf("process_initack_addrs: bad len (%d) type=%xh\n", 2470163953Srrs plen, ptype); 2471163953Srrs#endif 2472163953Srrs return; 2473163953Srrs } 2474163953Srrs /* get next parameter */ 2475163953Srrs offset += SCTP_SIZE32(plen); 2476163953Srrs if ((offset + sizeof(struct sctp_paramhdr)) > length) 2477163953Srrs return; 2478163953Srrs ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset, 2479163953Srrs sizeof(struct sctp_paramhdr), (uint8_t *) & tmp_param); 2480163953Srrs } /* while */ 2481163953Srrs} 2482163953Srrs 2483163953Srrs/* FIX ME: need to verify return result for v6 address type if v6 disabled */ 2484163953Srrs/* 2485163953Srrs * checks to see if a specific address is in the initack address list returns 2486163953Srrs * 1 if found, 0 if not 2487163953Srrs */ 2488163953Srrsstatic uint32_t 2489163953Srrssctp_addr_in_initack(struct sctp_tcb *stcb, struct mbuf *m, uint32_t offset, 2490163953Srrs uint32_t length, struct sockaddr *sa) 2491163953Srrs{ 2492163953Srrs struct sctp_paramhdr tmp_param, *ph; 2493163953Srrs uint16_t plen, ptype; 2494163953Srrs struct sctp_ipv6addr_param addr_store; 2495163953Srrs struct sockaddr_in *sin; 2496163953Srrs struct sctp_ipv4addr_param *a4p; 2497163953Srrs 2498163953Srrs#ifdef INET6 2499167598Srrs struct sockaddr_in6 *sin6; 2500163953Srrs struct sctp_ipv6addr_param *a6p; 2501167598Srrs struct sockaddr_in6 sin6_tmp; 2502163953Srrs 2503163953Srrs#endif /* INET6 */ 2504163953Srrs 2505163953Srrs if ( 2506163953Srrs#ifdef INET6 2507163953Srrs (sa->sa_family != AF_INET6) && 2508163953Srrs#endif /* INET6 */ 2509163953Srrs (sa->sa_family != AF_INET)) 2510163953Srrs return (0); 2511163953Srrs 2512163953Srrs#ifdef SCTP_DEBUG 2513163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF2) { 2514163953Srrs printf("find_initack_addr: starting search for "); 2515163953Srrs sctp_print_address(sa); 2516163953Srrs } 2517163953Srrs#endif /* SCTP_DEBUG */ 2518163953Srrs /* convert to upper bound */ 2519163953Srrs length += offset; 2520163953Srrs 2521163953Srrs if ((offset + sizeof(struct sctp_paramhdr)) > length) { 2522163953Srrs#ifdef SCTP_DEBUG 2523163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 2524163953Srrs printf("find_initack_addr: invalid offset?\n"); 2525163953Srrs } 2526163953Srrs#endif /* SCTP_DEBUG */ 2527163953Srrs return (0); 2528163953Srrs } 2529163953Srrs /* go through the addresses in the init-ack */ 2530163953Srrs ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset, 2531163953Srrs sizeof(struct sctp_paramhdr), (uint8_t *) & tmp_param); 2532163953Srrs while (ph != NULL) { 2533163953Srrs ptype = ntohs(ph->param_type); 2534163953Srrs plen = ntohs(ph->param_length); 2535163953Srrs#ifdef INET6 2536163953Srrs if (ptype == SCTP_IPV6_ADDRESS && sa->sa_family == AF_INET6) { 2537163953Srrs /* get the entire IPv6 address param */ 2538163953Srrs a6p = (struct sctp_ipv6addr_param *) 2539163953Srrs sctp_m_getptr(m, offset, 2540163953Srrs sizeof(struct sctp_ipv6addr_param), 2541163953Srrs (uint8_t *) & addr_store); 2542163953Srrs if (plen != sizeof(struct sctp_ipv6addr_param) || 2543163953Srrs ph == NULL) { 2544163953Srrs return (0); 2545163953Srrs } 2546163953Srrs sin6 = (struct sockaddr_in6 *)sa; 2547163953Srrs if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) { 2548163953Srrs /* create a copy and clear scope */ 2549163953Srrs memcpy(&sin6_tmp, sin6, 2550163953Srrs sizeof(struct sockaddr_in6)); 2551163953Srrs sin6 = &sin6_tmp; 2552163953Srrs in6_clearscope(&sin6->sin6_addr); 2553163953Srrs } 2554163953Srrs if (memcmp(&sin6->sin6_addr, a6p->addr, 2555163953Srrs sizeof(struct in6_addr)) == 0) { 2556163953Srrs /* found it */ 2557163953Srrs return (1); 2558163953Srrs } 2559163953Srrs } else 2560163953Srrs#endif /* INET6 */ 2561163953Srrs 2562163953Srrs if (ptype == SCTP_IPV4_ADDRESS && 2563163953Srrs sa->sa_family == AF_INET) { 2564163953Srrs /* get the entire IPv4 address param */ 2565163953Srrs a4p = (struct sctp_ipv4addr_param *)sctp_m_getptr(m, 2566163953Srrs offset, sizeof(struct sctp_ipv4addr_param), 2567163953Srrs (uint8_t *) & addr_store); 2568163953Srrs if (plen != sizeof(struct sctp_ipv4addr_param) || 2569163953Srrs ph == NULL) { 2570163953Srrs return (0); 2571163953Srrs } 2572163953Srrs sin = (struct sockaddr_in *)sa; 2573163953Srrs if (sin->sin_addr.s_addr == a4p->addr) { 2574163953Srrs /* found it */ 2575163953Srrs return (1); 2576163953Srrs } 2577163953Srrs } 2578163953Srrs /* get next parameter */ 2579163953Srrs offset += SCTP_SIZE32(plen); 2580163953Srrs if (offset + sizeof(struct sctp_paramhdr) > length) 2581163953Srrs return (0); 2582163953Srrs ph = (struct sctp_paramhdr *) 2583163953Srrs sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr), 2584163953Srrs (uint8_t *) & tmp_param); 2585163953Srrs } /* while */ 2586163953Srrs /* not found! */ 2587163953Srrs return (0); 2588163953Srrs} 2589163953Srrs 2590163953Srrs/* 2591163953Srrs * makes sure that the current endpoint local addr list is consistent with 2592163953Srrs * the new association (eg. subset bound, asconf allowed) adds addresses as 2593163953Srrs * necessary 2594163953Srrs */ 2595163953Srrsstatic void 2596163953Srrssctp_check_address_list_ep(struct sctp_tcb *stcb, struct mbuf *m, int offset, 2597163953Srrs int length, struct sockaddr *init_addr) 2598163953Srrs{ 2599163953Srrs struct sctp_laddr *laddr; 2600163953Srrs 2601163953Srrs /* go through the endpoint list */ 2602163953Srrs LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) { 2603163953Srrs /* be paranoid and validate the laddr */ 2604163953Srrs if (laddr->ifa == NULL) { 2605163953Srrs#ifdef SCTP_DEBUG 2606163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 2607163953Srrs printf("check_addr_list_ep: laddr->ifa is NULL"); 2608163953Srrs } 2609163953Srrs#endif /* SCTP_DEBUG */ 2610163953Srrs continue; 2611163953Srrs } 2612167598Srrs if (laddr->ifa == NULL) { 2613163953Srrs#ifdef SCTP_DEBUG 2614163953Srrs if (sctp_debug_on & SCTP_DEBUG_ASCONF1) { 2615163953Srrs printf("check_addr_list_ep: laddr->ifa->ifa_addr is NULL"); 2616163953Srrs } 2617163953Srrs#endif /* SCTP_DEBUG */ 2618163953Srrs continue; 2619163953Srrs } 2620163953Srrs /* do i have it implicitly? */ 2621167598Srrs if (sctp_cmpaddr(&laddr->ifa->address.sa, init_addr)) { 2622163953Srrs continue; 2623163953Srrs } 2624163953Srrs /* check to see if in the init-ack */ 2625163953Srrs if (!sctp_addr_in_initack(stcb, m, offset, length, 2626167598Srrs &laddr->ifa->address.sa)) { 2627163953Srrs /* try to add it */ 2628163953Srrs sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb, laddr->ifa, 2629163953Srrs SCTP_ADD_IP_ADDRESS); 2630163953Srrs } 2631163953Srrs } 2632163953Srrs} 2633163953Srrs 2634163953Srrs/* 2635163953Srrs * makes sure that the current kernel address list is consistent with the new 2636163953Srrs * association (with all addrs bound) adds addresses as necessary 2637163953Srrs */ 2638163953Srrsstatic void 2639163953Srrssctp_check_address_list_all(struct sctp_tcb *stcb, struct mbuf *m, int offset, 2640163953Srrs int length, struct sockaddr *init_addr, 2641163953Srrs uint16_t local_scope, uint16_t site_scope, 2642163953Srrs uint16_t ipv4_scope, uint16_t loopback_scope) 2643163953Srrs{ 2644167598Srrs struct sctp_vrf *vrf = NULL; 2645167598Srrs struct sctp_ifn *sctp_ifn; 2646167598Srrs struct sctp_ifa *sctp_ifa; 2647167598Srrs uint32_t vrf_id; 2648163953Srrs 2649168299Srrs if (stcb) { 2650168299Srrs vrf_id = stcb->asoc.vrf_id; 2651168299Srrs } else { 2652168299Srrs vrf_id = SCTP_DEFAULT_VRFID; 2653168299Srrs } 2654167598Srrs vrf = sctp_find_vrf(vrf_id); 2655167598Srrs if (vrf == NULL) { 2656167598Srrs return; 2657167598Srrs } 2658163953Srrs /* go through all our known interfaces */ 2659167598Srrs LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { 2660167598Srrs if (loopback_scope == 0 && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { 2661163953Srrs /* skip loopback interface */ 2662163953Srrs continue; 2663163953Srrs } 2664163953Srrs /* go through each interface address */ 2665167598Srrs LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { 2666163953Srrs /* do i have it implicitly? */ 2667167598Srrs if (sctp_cmpaddr(&sctp_ifa->address.sa, init_addr)) { 2668163953Srrs continue; 2669163953Srrs } 2670163953Srrs /* check to see if in the init-ack */ 2671163953Srrs if (!sctp_addr_in_initack(stcb, m, offset, length, 2672167598Srrs &sctp_ifa->address.sa)) { 2673163953Srrs /* try to add it */ 2674163953Srrs sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb, 2675167598Srrs sctp_ifa, SCTP_ADD_IP_ADDRESS); 2676163953Srrs } 2677163953Srrs } /* end foreach ifa */ 2678163953Srrs } /* end foreach ifn */ 2679163953Srrs} 2680163953Srrs 2681163953Srrs/* 2682163953Srrs * validates an init-ack chunk (from a cookie-echo) with current addresses 2683163953Srrs * adds addresses from the init-ack into our local address list, if needed 2684163953Srrs * queues asconf adds/deletes addresses as needed and makes appropriate list 2685163953Srrs * changes for source address selection m, offset: points to the start of the 2686163953Srrs * address list in an init-ack chunk length: total length of the address 2687163953Srrs * params only init_addr: address where my INIT-ACK was sent from 2688163953Srrs */ 2689163953Srrsvoid 2690163953Srrssctp_check_address_list(struct sctp_tcb *stcb, struct mbuf *m, int offset, 2691163953Srrs int length, struct sockaddr *init_addr, 2692163953Srrs uint16_t local_scope, uint16_t site_scope, 2693163953Srrs uint16_t ipv4_scope, uint16_t loopback_scope) 2694163953Srrs{ 2695163953Srrs /* process the local addresses in the initack */ 2696163953Srrs sctp_process_initack_addresses(stcb, m, offset, length); 2697163953Srrs 2698163953Srrs if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 2699163953Srrs /* bound all case */ 2700163953Srrs sctp_check_address_list_all(stcb, m, offset, length, init_addr, 2701163953Srrs local_scope, site_scope, ipv4_scope, loopback_scope); 2702163953Srrs } else { 2703163953Srrs /* subset bound case */ 2704163953Srrs if (sctp_is_feature_on(stcb->sctp_ep, 2705163953Srrs SCTP_PCB_FLAGS_DO_ASCONF)) { 2706163953Srrs /* asconf's allowed */ 2707163953Srrs sctp_check_address_list_ep(stcb, m, offset, length, 2708163953Srrs init_addr); 2709163953Srrs } 2710163953Srrs /* else, no asconfs allowed, so what we sent is what we get */ 2711163953Srrs } 2712163953Srrs} 2713163953Srrs 2714163953Srrs/* 2715163953Srrs * sctp_bindx() support 2716163953Srrs */ 2717163953Srrsuint32_t 2718167598Srrssctp_addr_mgmt_ep_sa(struct sctp_inpcb *inp, struct sockaddr *sa, uint32_t type, uint32_t vrf_id) 2719163953Srrs{ 2720167598Srrs struct sctp_ifa *ifa; 2721163953Srrs 2722167598Srrs if (sa->sa_len == 0) { 2723163953Srrs return (EINVAL); 2724167598Srrs } 2725167598Srrs if (type == SCTP_ADD_IP_ADDRESS) { 2726167598Srrs /* For an add the address MUST be on the system */ 2727167598Srrs ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0); 2728167598Srrs } else if (type == SCTP_DEL_IP_ADDRESS) { 2729167598Srrs /* For a delete we need to find it in the inp */ 2730167598Srrs ifa = sctp_find_ifa_in_ep(inp, sa, 0); 2731167598Srrs } else { 2732167598Srrs ifa = NULL; 2733167598Srrs } 2734163953Srrs if (ifa != NULL) { 2735167598Srrs /* add this address */ 2736167598Srrs struct sctp_asconf_iterator *asc; 2737167598Srrs struct sctp_laddr *wi; 2738163953Srrs 2739167598Srrs SCTP_MALLOC(asc, struct sctp_asconf_iterator *, 2740167598Srrs sizeof(struct sctp_asconf_iterator), "SCTP_ASCONF_ITERATOR"); 2741167598Srrs if (asc == NULL) { 2742167598Srrs return (ENOMEM); 2743167598Srrs } 2744167598Srrs wi = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_laddr, struct sctp_laddr); 2745167598Srrs if (wi == NULL) { 2746167598Srrs SCTP_FREE(asc); 2747167598Srrs return (ENOMEM); 2748167598Srrs } 2749167598Srrs if (type == SCTP_ADD_IP_ADDRESS) { 2750167598Srrs sctp_add_local_addr_ep(inp, ifa, type); 2751167598Srrs } else if (type == SCTP_DEL_IP_ADDRESS) { 2752167598Srrs struct sctp_laddr *laddr; 2753167598Srrs 2754167598Srrs LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 2755167598Srrs if (ifa == laddr->ifa) { 2756167598Srrs /* Mark in the delete */ 2757167598Srrs laddr->action = type; 2758167598Srrs } 2759163953Srrs } 2760163953Srrs } 2761167598Srrs LIST_INIT(&asc->list_of_work); 2762167598Srrs asc->cnt = 1; 2763167598Srrs SCTP_INCR_LADDR_COUNT(); 2764167598Srrs wi->ifa = ifa; 2765167598Srrs wi->action = type; 2766167598Srrs atomic_add_int(&ifa->refcount, 1); 2767167598Srrs LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr); 2768167598Srrs sctp_initiate_iterator(sctp_iterator_ep, 2769167598Srrs sctp_iterator_stcb, 2770167598Srrs sctp_iterator_ep_end, 2771167598Srrs SCTP_PCB_ANY_FLAGS, 2772167598Srrs SCTP_PCB_ANY_FEATURES, SCTP_ASOC_ANY_STATE, (void *)asc, 0, 2773167598Srrs sctp_iterator_end, inp, 0); 2774163953Srrs } else { 2775163953Srrs /* invalid address! */ 2776163953Srrs return (EADDRNOTAVAIL); 2777163953Srrs } 2778163953Srrs return (0); 2779163953Srrs} 2780