1163953Srrs/*- 2169382Srrs * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3237896Stuexen * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 4237896Stuexen * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 5163953Srrs * 6163953Srrs * Redistribution and use in source and binary forms, with or without 7163953Srrs * modification, are permitted provided that the following conditions are met: 8163953Srrs * 9163953Srrs * a) Redistributions of source code must retain the above copyright notice, 10231038Stuexen * this list of conditions and the following disclaimer. 11163953Srrs * 12163953Srrs * b) Redistributions in binary form must reproduce the above copyright 13163953Srrs * notice, this list of conditions and the following disclaimer in 14231038Stuexen * the documentation and/or other materials provided with the distribution. 15163953Srrs * 16163953Srrs * c) Neither the name of Cisco Systems, Inc. nor the names of its 17163953Srrs * contributors may be used to endorse or promote products derived 18163953Srrs * from this software without specific prior written permission. 19163953Srrs * 20163953Srrs * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21163953Srrs * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22163953Srrs * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23163953Srrs * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24163953Srrs * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25163953Srrs * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26163953Srrs * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27163953Srrs * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28163953Srrs * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29163953Srrs * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30163953Srrs * THE POSSIBILITY OF SUCH DAMAGE. 31163953Srrs */ 32163953Srrs 33163953Srrs#include <sys/cdefs.h> 34163957Srrs__FBSDID("$FreeBSD$"); 35237896Stuexen 36163953Srrs#include <netinet/sctp_os.h> 37163953Srrs#include <netinet/sctp_var.h> 38167598Srrs#include <netinet/sctp_sysctl.h> 39163953Srrs#include <netinet/sctp_pcb.h> 40163953Srrs#include <netinet/sctp_header.h> 41163953Srrs#include <netinet/sctputil.h> 42163953Srrs#include <netinet/sctp_output.h> 43163953Srrs#include <netinet/sctp_asconf.h> 44172091Srrs#include <netinet/sctp_timer.h> 45163953Srrs 46163953Srrs/* 47163953Srrs * debug flags: 48163953Srrs * SCTP_DEBUG_ASCONF1: protocol info, general info and errors 49163953Srrs * SCTP_DEBUG_ASCONF2: detailed info 50163953Srrs */ 51163953Srrs 52163953Srrs 53163953Srrs/* 54252889Stuexen * RFC 5061 55163953Srrs * 56163953Srrs * An ASCONF parameter queue exists per asoc which holds the pending address 57163953Srrs * operations. Lists are updated upon receipt of ASCONF-ACK. 58163953Srrs * 59171477Srrs * A restricted_addrs list exists per assoc to hold local addresses that are 60171477Srrs * not (yet) usable by the assoc as a source address. These addresses are 61171477Srrs * either pending an ASCONF operation (and exist on the ASCONF parameter 62171477Srrs * queue), or they are permanently restricted (the peer has returned an 63171477Srrs * ERROR indication to an ASCONF(ADD), or the peer does not support ASCONF). 64171477Srrs * 65163953Srrs * Deleted addresses are always immediately removed from the lists as they will 66163953Srrs * (shortly) no longer exist in the kernel. We send ASCONFs as a courtesy, 67163953Srrs * only if allowed. 68163953Srrs */ 69163953Srrs 70163953Srrs/* 71171477Srrs * ASCONF parameter processing. 72171477Srrs * response_required: set if a reply is required (eg. SUCCESS_REPORT). 73171477Srrs * returns a mbuf to an "error" response parameter or NULL/"success" if ok. 74171477Srrs * FIX: allocating this many mbufs on the fly is pretty inefficient... 75163953Srrs */ 76163953Srrsstatic struct mbuf * 77163953Srrssctp_asconf_success_response(uint32_t id) 78163953Srrs{ 79163953Srrs struct mbuf *m_reply = NULL; 80163953Srrs struct sctp_asconf_paramhdr *aph; 81163953Srrs 82163953Srrs m_reply = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_paramhdr), 83163953Srrs 0, M_DONTWAIT, 1, MT_DATA); 84163953Srrs if (m_reply == NULL) { 85169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 86169420Srrs "asconf_success_response: couldn't get mbuf!\n"); 87231039Stuexen return (NULL); 88163953Srrs } 89163953Srrs aph = mtod(m_reply, struct sctp_asconf_paramhdr *); 90163953Srrs aph->correlation_id = id; 91163953Srrs aph->ph.param_type = htons(SCTP_SUCCESS_REPORT); 92163953Srrs aph->ph.param_length = sizeof(struct sctp_asconf_paramhdr); 93165647Srrs SCTP_BUF_LEN(m_reply) = aph->ph.param_length; 94163953Srrs aph->ph.param_length = htons(aph->ph.param_length); 95163953Srrs 96231039Stuexen return (m_reply); 97163953Srrs} 98163953Srrs 99163953Srrsstatic struct mbuf * 100163953Srrssctp_asconf_error_response(uint32_t id, uint16_t cause, uint8_t * error_tlv, 101163953Srrs uint16_t tlv_length) 102163953Srrs{ 103163953Srrs struct mbuf *m_reply = NULL; 104163953Srrs struct sctp_asconf_paramhdr *aph; 105163953Srrs struct sctp_error_cause *error; 106163953Srrs uint8_t *tlv; 107163953Srrs 108163953Srrs m_reply = sctp_get_mbuf_for_msg((sizeof(struct sctp_asconf_paramhdr) + 109163953Srrs tlv_length + 110163953Srrs sizeof(struct sctp_error_cause)), 111163953Srrs 0, M_DONTWAIT, 1, MT_DATA); 112163953Srrs if (m_reply == NULL) { 113169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 114169420Srrs "asconf_error_response: couldn't get mbuf!\n"); 115231039Stuexen return (NULL); 116163953Srrs } 117163953Srrs aph = mtod(m_reply, struct sctp_asconf_paramhdr *); 118163953Srrs error = (struct sctp_error_cause *)(aph + 1); 119163953Srrs 120163953Srrs aph->correlation_id = id; 121163953Srrs aph->ph.param_type = htons(SCTP_ERROR_CAUSE_IND); 122163953Srrs error->code = htons(cause); 123163953Srrs error->length = tlv_length + sizeof(struct sctp_error_cause); 124163953Srrs aph->ph.param_length = error->length + 125163953Srrs sizeof(struct sctp_asconf_paramhdr); 126163953Srrs 127163953Srrs if (aph->ph.param_length > MLEN) { 128169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 129169420Srrs "asconf_error_response: tlv_length (%xh) too big\n", 130169420Srrs tlv_length); 131163953Srrs sctp_m_freem(m_reply); /* discard */ 132231039Stuexen return (NULL); 133163953Srrs } 134163953Srrs if (error_tlv != NULL) { 135163953Srrs tlv = (uint8_t *) (error + 1); 136163953Srrs memcpy(tlv, error_tlv, tlv_length); 137163953Srrs } 138165647Srrs SCTP_BUF_LEN(m_reply) = aph->ph.param_length; 139163953Srrs error->length = htons(error->length); 140163953Srrs aph->ph.param_length = htons(aph->ph.param_length); 141163953Srrs 142231039Stuexen return (m_reply); 143163953Srrs} 144163953Srrs 145163953Srrsstatic struct mbuf * 146252889Stuexensctp_process_asconf_add_ip(struct sockaddr *src, struct sctp_asconf_paramhdr *aph, 147224641Stuexen struct sctp_tcb *stcb, int send_hb, int response_required) 148163953Srrs{ 149224641Stuexen struct sctp_nets *net; 150163953Srrs struct mbuf *m_reply = NULL; 151252889Stuexen struct sockaddr_storage sa_store; 152221249Stuexen struct sctp_paramhdr *ph; 153266054Stuexen uint16_t param_type, aparam_length; 154266054Stuexen 155266054Stuexen#if defined(INET) || defined(INET6) 156266054Stuexen uint16_t param_length; 157266054Stuexen 158266054Stuexen#endif 159163953Srrs struct sockaddr *sa; 160163953Srrs int zero_address = 0; 161225571Stuexen int bad_address = 0; 162163953Srrs 163221249Stuexen#ifdef INET 164221249Stuexen struct sockaddr_in *sin; 165221249Stuexen struct sctp_ipv4addr_param *v4addr; 166221249Stuexen 167221249Stuexen#endif 168163953Srrs#ifdef INET6 169163953Srrs struct sockaddr_in6 *sin6; 170163953Srrs struct sctp_ipv6addr_param *v6addr; 171163953Srrs 172221249Stuexen#endif 173163953Srrs 174163953Srrs aparam_length = ntohs(aph->ph.param_length); 175221249Stuexen ph = (struct sctp_paramhdr *)(aph + 1); 176221249Stuexen param_type = ntohs(ph->param_type); 177266054Stuexen#if defined(INET) || defined(INET6) 178221249Stuexen param_length = ntohs(ph->param_length); 179266054Stuexen#endif 180163953Srrs sa = (struct sockaddr *)&sa_store; 181163953Srrs switch (param_type) { 182221249Stuexen#ifdef INET 183163953Srrs case SCTP_IPV4_ADDRESS: 184163953Srrs if (param_length != sizeof(struct sctp_ipv4addr_param)) { 185163953Srrs /* invalid param size */ 186231039Stuexen return (NULL); 187163953Srrs } 188221249Stuexen v4addr = (struct sctp_ipv4addr_param *)ph; 189163953Srrs sin = (struct sockaddr_in *)&sa_store; 190163953Srrs bzero(sin, sizeof(*sin)); 191163953Srrs sin->sin_family = AF_INET; 192163953Srrs sin->sin_len = sizeof(struct sockaddr_in); 193163953Srrs sin->sin_port = stcb->rport; 194163953Srrs sin->sin_addr.s_addr = v4addr->addr; 195225571Stuexen if ((sin->sin_addr.s_addr == INADDR_BROADCAST) || 196225571Stuexen IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) { 197225584Stuexen bad_address = 1; 198225571Stuexen } 199163953Srrs if (sin->sin_addr.s_addr == INADDR_ANY) 200163953Srrs zero_address = 1; 201169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_add_ip: adding "); 202169420Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa); 203163953Srrs break; 204221249Stuexen#endif 205221249Stuexen#ifdef INET6 206163953Srrs case SCTP_IPV6_ADDRESS: 207163953Srrs if (param_length != sizeof(struct sctp_ipv6addr_param)) { 208163953Srrs /* invalid param size */ 209231039Stuexen return (NULL); 210163953Srrs } 211221249Stuexen v6addr = (struct sctp_ipv6addr_param *)ph; 212163953Srrs sin6 = (struct sockaddr_in6 *)&sa_store; 213163953Srrs bzero(sin6, sizeof(*sin6)); 214163953Srrs sin6->sin6_family = AF_INET6; 215163953Srrs sin6->sin6_len = sizeof(struct sockaddr_in6); 216163953Srrs sin6->sin6_port = stcb->rport; 217163953Srrs memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr, 218163953Srrs sizeof(struct in6_addr)); 219225571Stuexen if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 220225571Stuexen bad_address = 1; 221225571Stuexen } 222163953Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 223163953Srrs zero_address = 1; 224169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_add_ip: adding "); 225169420Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa); 226221249Stuexen break; 227169420Srrs#endif 228163953Srrs default: 229163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 230225571Stuexen SCTP_CAUSE_INVALID_PARAM, (uint8_t *) aph, 231163953Srrs aparam_length); 232231039Stuexen return (m_reply); 233163953Srrs } /* end switch */ 234163953Srrs 235163953Srrs /* if 0.0.0.0/::0, add the source address instead */ 236179783Srrs if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) { 237252889Stuexen sa = src; 238169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 239169420Srrs "process_asconf_add_ip: using source addr "); 240252889Stuexen SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src); 241163953Srrs } 242163953Srrs /* add the address */ 243225571Stuexen if (bad_address) { 244225571Stuexen m_reply = sctp_asconf_error_response(aph->correlation_id, 245225571Stuexen SCTP_CAUSE_INVALID_PARAM, (uint8_t *) aph, 246225571Stuexen aparam_length); 247225571Stuexen } else if (sctp_add_remote_addr(stcb, sa, &net, SCTP_DONOT_SETSCOPE, 248165220Srrs SCTP_ADDR_DYNAMIC_ADDED) != 0) { 249169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 250169420Srrs "process_asconf_add_ip: error adding address\n"); 251163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 252163953Srrs SCTP_CAUSE_RESOURCE_SHORTAGE, (uint8_t *) aph, 253163953Srrs aparam_length); 254163953Srrs } else { 255163953Srrs /* notify upper layer */ 256172090Srrs sctp_ulp_notify(SCTP_NOTIFY_ASCONF_ADD_IP, stcb, 0, sa, SCTP_SO_NOT_LOCKED); 257163953Srrs if (response_required) { 258163953Srrs m_reply = 259163953Srrs sctp_asconf_success_response(aph->correlation_id); 260163953Srrs } 261224641Stuexen sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, stcb->sctp_ep, stcb, net); 262169655Srrs sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, 263224641Stuexen stcb, net); 264224641Stuexen if (send_hb) { 265224641Stuexen sctp_send_hb(stcb, net, SCTP_SO_NOT_LOCKED); 266224641Stuexen } 267163953Srrs } 268231039Stuexen return (m_reply); 269163953Srrs} 270163953Srrs 271163953Srrsstatic int 272171572Srrssctp_asconf_del_remote_addrs_except(struct sctp_tcb *stcb, struct sockaddr *src) 273163953Srrs{ 274163953Srrs struct sctp_nets *src_net, *net; 275163953Srrs 276163953Srrs /* make sure the source address exists as a destination net */ 277163953Srrs src_net = sctp_findnet(stcb, src); 278163953Srrs if (src_net == NULL) { 279163953Srrs /* not found */ 280231039Stuexen return (-1); 281163953Srrs } 282163953Srrs /* delete all destination addresses except the source */ 283163953Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 284163953Srrs if (net != src_net) { 285163953Srrs /* delete this address */ 286163953Srrs sctp_remove_net(stcb, net); 287169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 288169420Srrs "asconf_del_remote_addrs_except: deleting "); 289169420Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, 290169420Srrs (struct sockaddr *)&net->ro._l_addr); 291163953Srrs /* notify upper layer */ 292163953Srrs sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0, 293172090Srrs (struct sockaddr *)&net->ro._l_addr, SCTP_SO_NOT_LOCKED); 294163953Srrs } 295163953Srrs } 296231039Stuexen return (0); 297163953Srrs} 298163953Srrs 299163953Srrsstatic struct mbuf * 300252889Stuexensctp_process_asconf_delete_ip(struct sockaddr *src, 301252889Stuexen struct sctp_asconf_paramhdr *aph, 302163953Srrs struct sctp_tcb *stcb, int response_required) 303163953Srrs{ 304163953Srrs struct mbuf *m_reply = NULL; 305252889Stuexen struct sockaddr_storage sa_store; 306221249Stuexen struct sctp_paramhdr *ph; 307266054Stuexen uint16_t param_type, aparam_length; 308266054Stuexen 309266054Stuexen#if defined(INET) || defined(INET6) 310266054Stuexen uint16_t param_length; 311266054Stuexen 312266054Stuexen#endif 313163953Srrs struct sockaddr *sa; 314163953Srrs int zero_address = 0; 315163953Srrs int result; 316163953Srrs 317221249Stuexen#ifdef INET 318221249Stuexen struct sockaddr_in *sin; 319221249Stuexen struct sctp_ipv4addr_param *v4addr; 320221249Stuexen 321221249Stuexen#endif 322163953Srrs#ifdef INET6 323163953Srrs struct sockaddr_in6 *sin6; 324163953Srrs struct sctp_ipv6addr_param *v6addr; 325163953Srrs 326221249Stuexen#endif 327163953Srrs 328163953Srrs aparam_length = ntohs(aph->ph.param_length); 329221249Stuexen ph = (struct sctp_paramhdr *)(aph + 1); 330221249Stuexen param_type = ntohs(ph->param_type); 331266054Stuexen#if defined(INET) || defined(INET6) 332221249Stuexen param_length = ntohs(ph->param_length); 333266054Stuexen#endif 334163953Srrs sa = (struct sockaddr *)&sa_store; 335163953Srrs switch (param_type) { 336221249Stuexen#ifdef INET 337163953Srrs case SCTP_IPV4_ADDRESS: 338163953Srrs if (param_length != sizeof(struct sctp_ipv4addr_param)) { 339163953Srrs /* invalid param size */ 340231039Stuexen return (NULL); 341163953Srrs } 342221249Stuexen v4addr = (struct sctp_ipv4addr_param *)ph; 343163953Srrs sin = (struct sockaddr_in *)&sa_store; 344163953Srrs bzero(sin, sizeof(*sin)); 345163953Srrs sin->sin_family = AF_INET; 346163953Srrs sin->sin_len = sizeof(struct sockaddr_in); 347163953Srrs sin->sin_port = stcb->rport; 348163953Srrs sin->sin_addr.s_addr = v4addr->addr; 349163953Srrs if (sin->sin_addr.s_addr == INADDR_ANY) 350163953Srrs zero_address = 1; 351169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 352169420Srrs "process_asconf_delete_ip: deleting "); 353169420Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa); 354163953Srrs break; 355221249Stuexen#endif 356221249Stuexen#ifdef INET6 357163953Srrs case SCTP_IPV6_ADDRESS: 358163953Srrs if (param_length != sizeof(struct sctp_ipv6addr_param)) { 359163953Srrs /* invalid param size */ 360231039Stuexen return (NULL); 361163953Srrs } 362221249Stuexen v6addr = (struct sctp_ipv6addr_param *)ph; 363163953Srrs sin6 = (struct sockaddr_in6 *)&sa_store; 364163953Srrs bzero(sin6, sizeof(*sin6)); 365163953Srrs sin6->sin6_family = AF_INET6; 366163953Srrs sin6->sin6_len = sizeof(struct sockaddr_in6); 367163953Srrs sin6->sin6_port = stcb->rport; 368163953Srrs memcpy(&sin6->sin6_addr, v6addr->addr, 369163953Srrs sizeof(struct in6_addr)); 370163953Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 371163953Srrs zero_address = 1; 372169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 373169420Srrs "process_asconf_delete_ip: deleting "); 374169420Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa); 375221249Stuexen break; 376169420Srrs#endif 377163953Srrs default: 378163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 379163953Srrs SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph, 380163953Srrs aparam_length); 381231039Stuexen return (m_reply); 382163953Srrs } 383163953Srrs 384163953Srrs /* make sure the source address is not being deleted */ 385252889Stuexen if (sctp_cmpaddr(sa, src)) { 386163953Srrs /* trying to delete the source address! */ 387169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: tried to delete source addr\n"); 388163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 389163953Srrs SCTP_CAUSE_DELETING_SRC_ADDR, (uint8_t *) aph, 390163953Srrs aparam_length); 391231039Stuexen return (m_reply); 392163953Srrs } 393163953Srrs /* if deleting 0.0.0.0/::0, delete all addresses except src addr */ 394179783Srrs if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) { 395252889Stuexen result = sctp_asconf_del_remote_addrs_except(stcb, src); 396163953Srrs 397163953Srrs if (result) { 398163953Srrs /* src address did not exist? */ 399169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: src addr does not exist?\n"); 400163953Srrs /* what error to reply with?? */ 401163953Srrs m_reply = 402163953Srrs sctp_asconf_error_response(aph->correlation_id, 403163953Srrs SCTP_CAUSE_REQUEST_REFUSED, (uint8_t *) aph, 404163953Srrs aparam_length); 405163953Srrs } else if (response_required) { 406163953Srrs m_reply = 407163953Srrs sctp_asconf_success_response(aph->correlation_id); 408163953Srrs } 409231039Stuexen return (m_reply); 410163953Srrs } 411163953Srrs /* delete the address */ 412163953Srrs result = sctp_del_remote_addr(stcb, sa); 413163953Srrs /* 414163953Srrs * note if result == -2, the address doesn't exist in the asoc but 415163953Srrs * since it's being deleted anyways, we just ack the delete -- but 416163953Srrs * this probably means something has already gone awry 417163953Srrs */ 418163953Srrs if (result == -1) { 419163953Srrs /* only one address in the asoc */ 420169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_delete_ip: tried to delete last IP addr!\n"); 421163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 422163953Srrs SCTP_CAUSE_DELETING_LAST_ADDR, (uint8_t *) aph, 423163953Srrs aparam_length); 424163953Srrs } else { 425163953Srrs if (response_required) { 426163953Srrs m_reply = sctp_asconf_success_response(aph->correlation_id); 427163953Srrs } 428163953Srrs /* notify upper layer */ 429172090Srrs sctp_ulp_notify(SCTP_NOTIFY_ASCONF_DELETE_IP, stcb, 0, sa, SCTP_SO_NOT_LOCKED); 430163953Srrs } 431231039Stuexen return (m_reply); 432163953Srrs} 433163953Srrs 434163953Srrsstatic struct mbuf * 435252889Stuexensctp_process_asconf_set_primary(struct sockaddr *src, 436171572Srrs struct sctp_asconf_paramhdr *aph, 437171572Srrs struct sctp_tcb *stcb, int response_required) 438163953Srrs{ 439163953Srrs struct mbuf *m_reply = NULL; 440252889Stuexen struct sockaddr_storage sa_store; 441221249Stuexen struct sctp_paramhdr *ph; 442266054Stuexen uint16_t param_type, aparam_length; 443266054Stuexen 444266054Stuexen#if defined(INET) || defined(INET6) 445266054Stuexen uint16_t param_length; 446266054Stuexen 447266054Stuexen#endif 448163953Srrs struct sockaddr *sa; 449163953Srrs int zero_address = 0; 450163953Srrs 451221249Stuexen#ifdef INET 452221249Stuexen struct sockaddr_in *sin; 453221249Stuexen struct sctp_ipv4addr_param *v4addr; 454221249Stuexen 455221249Stuexen#endif 456163953Srrs#ifdef INET6 457163953Srrs struct sockaddr_in6 *sin6; 458163953Srrs struct sctp_ipv6addr_param *v6addr; 459163953Srrs 460221249Stuexen#endif 461163953Srrs 462163953Srrs aparam_length = ntohs(aph->ph.param_length); 463221249Stuexen ph = (struct sctp_paramhdr *)(aph + 1); 464221249Stuexen param_type = ntohs(ph->param_type); 465266054Stuexen#if defined(INET) || defined(INET6) 466221249Stuexen param_length = ntohs(ph->param_length); 467266054Stuexen#endif 468163953Srrs sa = (struct sockaddr *)&sa_store; 469163953Srrs switch (param_type) { 470221249Stuexen#ifdef INET 471163953Srrs case SCTP_IPV4_ADDRESS: 472163953Srrs if (param_length != sizeof(struct sctp_ipv4addr_param)) { 473163953Srrs /* invalid param size */ 474231039Stuexen return (NULL); 475163953Srrs } 476221249Stuexen v4addr = (struct sctp_ipv4addr_param *)ph; 477163953Srrs sin = (struct sockaddr_in *)&sa_store; 478163953Srrs bzero(sin, sizeof(*sin)); 479163953Srrs sin->sin_family = AF_INET; 480163953Srrs sin->sin_len = sizeof(struct sockaddr_in); 481163953Srrs sin->sin_addr.s_addr = v4addr->addr; 482163953Srrs if (sin->sin_addr.s_addr == INADDR_ANY) 483163953Srrs zero_address = 1; 484169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_set_primary: "); 485169420Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa); 486163953Srrs break; 487221249Stuexen#endif 488221249Stuexen#ifdef INET6 489163953Srrs case SCTP_IPV6_ADDRESS: 490163953Srrs if (param_length != sizeof(struct sctp_ipv6addr_param)) { 491163953Srrs /* invalid param size */ 492231039Stuexen return (NULL); 493163953Srrs } 494221249Stuexen v6addr = (struct sctp_ipv6addr_param *)ph; 495163953Srrs sin6 = (struct sockaddr_in6 *)&sa_store; 496163953Srrs bzero(sin6, sizeof(*sin6)); 497163953Srrs sin6->sin6_family = AF_INET6; 498163953Srrs sin6->sin6_len = sizeof(struct sockaddr_in6); 499163953Srrs memcpy((caddr_t)&sin6->sin6_addr, v6addr->addr, 500163953Srrs sizeof(struct in6_addr)); 501163953Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 502163953Srrs zero_address = 1; 503169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "process_asconf_set_primary: "); 504169420Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa); 505221249Stuexen break; 506169420Srrs#endif 507163953Srrs default: 508163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 509163953Srrs SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph, 510163953Srrs aparam_length); 511231039Stuexen return (m_reply); 512163953Srrs } 513163953Srrs 514163953Srrs /* if 0.0.0.0/::0, use the source address instead */ 515179783Srrs if (zero_address && SCTP_BASE_SYSCTL(sctp_nat_friendly)) { 516252889Stuexen sa = src; 517169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 518169420Srrs "process_asconf_set_primary: using source addr "); 519252889Stuexen SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src); 520163953Srrs } 521163953Srrs /* set the primary address */ 522163953Srrs if (sctp_set_primary_addr(stcb, sa, NULL) == 0) { 523169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 524169420Srrs "process_asconf_set_primary: primary address set\n"); 525163953Srrs /* notify upper layer */ 526172090Srrs sctp_ulp_notify(SCTP_NOTIFY_ASCONF_SET_PRIMARY, stcb, 0, sa, SCTP_SO_NOT_LOCKED); 527224641Stuexen if ((stcb->asoc.primary_destination->dest_state & SCTP_ADDR_REACHABLE) && 528224641Stuexen (!(stcb->asoc.primary_destination->dest_state & SCTP_ADDR_PF)) && 529224641Stuexen (stcb->asoc.alternate)) { 530224641Stuexen sctp_free_remote_addr(stcb->asoc.alternate); 531224641Stuexen stcb->asoc.alternate = NULL; 532224641Stuexen } 533163953Srrs if (response_required) { 534163953Srrs m_reply = sctp_asconf_success_response(aph->correlation_id); 535163953Srrs } 536172091Srrs /* 537172091Srrs * Mobility adaptation. Ideally, when the reception of SET 538172091Srrs * PRIMARY with DELETE IP ADDRESS of the previous primary 539172091Srrs * destination, unacknowledged DATA are retransmitted 540172091Srrs * immediately to the new primary destination for seamless 541206137Stuexen * handover. If the destination is UNCONFIRMED and marked to 542206137Stuexen * REQ_PRIM, The retransmission occur when reception of the 543206137Stuexen * HEARTBEAT-ACK. (See sctp_handle_heartbeat_ack in 544172091Srrs * sctp_input.c) Also, when change of the primary 545172091Srrs * destination, it is better that all subsequent new DATA 546172091Srrs * containing already queued DATA are transmitted to the new 547172091Srrs * primary destination. (by micchie) 548172091Srrs */ 549172091Srrs if ((sctp_is_mobility_feature_on(stcb->sctp_ep, 550172091Srrs SCTP_MOBILITY_BASE) || 551172091Srrs sctp_is_mobility_feature_on(stcb->sctp_ep, 552172091Srrs SCTP_MOBILITY_FASTHANDOFF)) && 553172091Srrs sctp_is_mobility_feature_on(stcb->sctp_ep, 554172091Srrs SCTP_MOBILITY_PRIM_DELETED) && 555172091Srrs (stcb->asoc.primary_destination->dest_state & 556172091Srrs SCTP_ADDR_UNCONFIRMED) == 0) { 557172091Srrs 558172091Srrs sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTP_TIMER + SCTP_LOC_7); 559172091Srrs if (sctp_is_mobility_feature_on(stcb->sctp_ep, 560172091Srrs SCTP_MOBILITY_FASTHANDOFF)) { 561172091Srrs sctp_assoc_immediate_retrans(stcb, 562172091Srrs stcb->asoc.primary_destination); 563172091Srrs } 564172091Srrs if (sctp_is_mobility_feature_on(stcb->sctp_ep, 565172091Srrs SCTP_MOBILITY_BASE)) { 566212712Stuexen sctp_move_chunks_from_net(stcb, 567212712Stuexen stcb->asoc.deleted_primary); 568172091Srrs } 569172091Srrs sctp_delete_prim_timer(stcb->sctp_ep, stcb, 570172091Srrs stcb->asoc.deleted_primary); 571172091Srrs } 572163953Srrs } else { 573163953Srrs /* couldn't set the requested primary address! */ 574169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 575169420Srrs "process_asconf_set_primary: set primary failed!\n"); 576163953Srrs /* must have been an invalid address, so report */ 577163953Srrs m_reply = sctp_asconf_error_response(aph->correlation_id, 578163953Srrs SCTP_CAUSE_UNRESOLVABLE_ADDR, (uint8_t *) aph, 579163953Srrs aparam_length); 580163953Srrs } 581163953Srrs 582231039Stuexen return (m_reply); 583163953Srrs} 584163953Srrs 585163953Srrs/* 586163953Srrs * handles an ASCONF chunk. 587163953Srrs * if all parameters are processed ok, send a plain (empty) ASCONF-ACK 588163953Srrs */ 589163953Srrsvoid 590163953Srrssctp_handle_asconf(struct mbuf *m, unsigned int offset, 591252889Stuexen struct sockaddr *src, 592171990Srrs struct sctp_asconf_chunk *cp, struct sctp_tcb *stcb, 593171990Srrs int first) 594163953Srrs{ 595163953Srrs struct sctp_association *asoc; 596163953Srrs uint32_t serial_num; 597171990Srrs struct mbuf *n, *m_ack, *m_result, *m_tail; 598163953Srrs struct sctp_asconf_ack_chunk *ack_cp; 599163953Srrs struct sctp_asconf_paramhdr *aph, *ack_aph; 600163953Srrs struct sctp_ipv6addr_param *p_addr; 601224641Stuexen unsigned int asconf_limit, cnt; 602163953Srrs int error = 0; /* did an error occur? */ 603163953Srrs 604163953Srrs /* asconf param buffer */ 605166675Srrs uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE]; 606171990Srrs struct sctp_asconf_ack *ack, *ack_next; 607163953Srrs 608163953Srrs /* verify minimum length */ 609163953Srrs if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_chunk)) { 610169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 611169420Srrs "handle_asconf: chunk too small = %xh\n", 612169420Srrs ntohs(cp->ch.chunk_length)); 613163953Srrs return; 614163953Srrs } 615163953Srrs asoc = &stcb->asoc; 616163953Srrs serial_num = ntohl(cp->serial_number); 617163953Srrs 618216825Stuexen if (SCTP_TSN_GE(asoc->asconf_seq_in, serial_num)) { 619163953Srrs /* got a duplicate ASCONF */ 620169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 621169420Srrs "handle_asconf: got duplicate serial number = %xh\n", 622169420Srrs serial_num); 623163953Srrs return; 624163953Srrs } else if (serial_num != (asoc->asconf_seq_in + 1)) { 625169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: incorrect serial number = %xh (expected next = %xh)\n", 626169420Srrs serial_num, asoc->asconf_seq_in + 1); 627163953Srrs return; 628163953Srrs } 629163953Srrs /* it's the expected "next" sequence number, so process it */ 630163953Srrs asoc->asconf_seq_in = serial_num; /* update sequence */ 631163953Srrs /* get length of all the param's in the ASCONF */ 632163953Srrs asconf_limit = offset + ntohs(cp->ch.chunk_length); 633169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 634169420Srrs "handle_asconf: asconf_limit=%u, sequence=%xh\n", 635169420Srrs asconf_limit, serial_num); 636171990Srrs 637171990Srrs if (first) { 638171990Srrs /* delete old cache */ 639221249Stuexen SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: Now processing first ASCONF. Try to delete old cache\n"); 640171990Srrs 641216822Stuexen TAILQ_FOREACH_SAFE(ack, &asoc->asconf_ack_sent, next, ack_next) { 642171990Srrs if (ack->serial_number == serial_num) 643171990Srrs break; 644171990Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: delete old(%u) < first(%u)\n", 645171990Srrs ack->serial_number, serial_num); 646216822Stuexen TAILQ_REMOVE(&asoc->asconf_ack_sent, ack, next); 647171990Srrs if (ack->data != NULL) { 648171990Srrs sctp_m_freem(ack->data); 649171990Srrs } 650179783Srrs SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), ack); 651171990Srrs } 652163953Srrs } 653165647Srrs m_ack = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_ack_chunk), 0, 654163953Srrs M_DONTWAIT, 1, MT_DATA); 655163953Srrs if (m_ack == NULL) { 656169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 657169420Srrs "handle_asconf: couldn't get mbuf!\n"); 658163953Srrs return; 659163953Srrs } 660163953Srrs m_tail = m_ack; /* current reply chain's tail */ 661163953Srrs 662163953Srrs /* fill in ASCONF-ACK header */ 663163953Srrs ack_cp = mtod(m_ack, struct sctp_asconf_ack_chunk *); 664163953Srrs ack_cp->ch.chunk_type = SCTP_ASCONF_ACK; 665163953Srrs ack_cp->ch.chunk_flags = 0; 666163953Srrs ack_cp->serial_number = htonl(serial_num); 667163953Srrs /* set initial lengths (eg. just an ASCONF-ACK), ntohx at the end! */ 668165647Srrs SCTP_BUF_LEN(m_ack) = sizeof(struct sctp_asconf_ack_chunk); 669163953Srrs ack_cp->ch.chunk_length = sizeof(struct sctp_asconf_ack_chunk); 670163953Srrs 671163953Srrs /* skip the lookup address parameter */ 672163953Srrs offset += sizeof(struct sctp_asconf_chunk); 673163953Srrs p_addr = (struct sctp_ipv6addr_param *)sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr), (uint8_t *) & aparam_buf); 674163953Srrs if (p_addr == NULL) { 675169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 676169420Srrs "handle_asconf: couldn't get lookup addr!\n"); 677163953Srrs /* respond with a missing/invalid mandatory parameter error */ 678163953Srrs return; 679163953Srrs } 680163953Srrs /* param_length is already validated in process_control... */ 681163953Srrs offset += ntohs(p_addr->ph.param_length); /* skip lookup addr */ 682163953Srrs 683163953Srrs /* get pointer to first asconf param in ASCONF-ACK */ 684163953Srrs ack_aph = (struct sctp_asconf_paramhdr *)(mtod(m_ack, caddr_t)+sizeof(struct sctp_asconf_ack_chunk)); 685163953Srrs if (ack_aph == NULL) { 686169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "Gak in asconf2\n"); 687163953Srrs return; 688163953Srrs } 689163953Srrs /* get pointer to first asconf param in ASCONF */ 690163953Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, sizeof(struct sctp_asconf_paramhdr), (uint8_t *) & aparam_buf); 691163953Srrs if (aph == NULL) { 692169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "Empty ASCONF received?\n"); 693163953Srrs goto send_reply; 694163953Srrs } 695163953Srrs /* process through all parameters */ 696224641Stuexen cnt = 0; 697163953Srrs while (aph != NULL) { 698163953Srrs unsigned int param_length, param_type; 699163953Srrs 700163953Srrs param_type = ntohs(aph->ph.param_type); 701163953Srrs param_length = ntohs(aph->ph.param_length); 702163953Srrs if (offset + param_length > asconf_limit) { 703163953Srrs /* parameter goes beyond end of chunk! */ 704163953Srrs sctp_m_freem(m_ack); 705163953Srrs return; 706163953Srrs } 707163953Srrs m_result = NULL; 708163953Srrs 709163953Srrs if (param_length > sizeof(aparam_buf)) { 710169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: param length (%u) larger than buffer size!\n", param_length); 711163953Srrs sctp_m_freem(m_ack); 712163953Srrs return; 713163953Srrs } 714163953Srrs if (param_length <= sizeof(struct sctp_paramhdr)) { 715169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: param length (%u) too short\n", param_length); 716163953Srrs sctp_m_freem(m_ack); 717163953Srrs } 718163953Srrs /* get the entire parameter */ 719163953Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf); 720163953Srrs if (aph == NULL) { 721169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: couldn't get entire param\n"); 722163953Srrs sctp_m_freem(m_ack); 723163953Srrs return; 724163953Srrs } 725163953Srrs switch (param_type) { 726163953Srrs case SCTP_ADD_IP_ADDRESS: 727163953Srrs asoc->peer_supports_asconf = 1; 728252889Stuexen m_result = sctp_process_asconf_add_ip(src, aph, stcb, 729224641Stuexen (cnt < SCTP_BASE_SYSCTL(sctp_hb_maxburst)), error); 730224641Stuexen cnt++; 731163953Srrs break; 732163953Srrs case SCTP_DEL_IP_ADDRESS: 733163953Srrs asoc->peer_supports_asconf = 1; 734252889Stuexen m_result = sctp_process_asconf_delete_ip(src, aph, stcb, 735163953Srrs error); 736163953Srrs break; 737163953Srrs case SCTP_ERROR_CAUSE_IND: 738163953Srrs /* not valid in an ASCONF chunk */ 739163953Srrs break; 740163953Srrs case SCTP_SET_PRIM_ADDR: 741163953Srrs asoc->peer_supports_asconf = 1; 742252889Stuexen m_result = sctp_process_asconf_set_primary(src, aph, 743163953Srrs stcb, error); 744163953Srrs break; 745185694Srrs case SCTP_NAT_VTAGS: 746185694Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: sees a NAT VTAG state parameter\n"); 747185694Srrs break; 748163953Srrs case SCTP_SUCCESS_REPORT: 749163953Srrs /* not valid in an ASCONF chunk */ 750163953Srrs break; 751163953Srrs case SCTP_ULP_ADAPTATION: 752163953Srrs /* FIX */ 753163953Srrs break; 754163953Srrs default: 755163953Srrs if ((param_type & 0x8000) == 0) { 756163953Srrs /* Been told to STOP at this param */ 757163953Srrs asconf_limit = offset; 758163953Srrs /* 759163953Srrs * FIX FIX - We need to call 760163953Srrs * sctp_arethere_unrecognized_parameters() 761163953Srrs * to get a operr and send it for any 762163953Srrs * param's with the 0x4000 bit set OR do it 763163953Srrs * here ourselves... note we still must STOP 764163953Srrs * if the 0x8000 bit is clear. 765163953Srrs */ 766163953Srrs } 767163953Srrs /* unknown/invalid param type */ 768163953Srrs break; 769163953Srrs } /* switch */ 770163953Srrs 771163953Srrs /* add any (error) result to the reply mbuf chain */ 772163953Srrs if (m_result != NULL) { 773165647Srrs SCTP_BUF_NEXT(m_tail) = m_result; 774163953Srrs m_tail = m_result; 775163953Srrs /* update lengths, make sure it's aligned too */ 776165647Srrs SCTP_BUF_LEN(m_result) = SCTP_SIZE32(SCTP_BUF_LEN(m_result)); 777165647Srrs ack_cp->ch.chunk_length += SCTP_BUF_LEN(m_result); 778163953Srrs /* set flag to force success reports */ 779163953Srrs error = 1; 780163953Srrs } 781163953Srrs offset += SCTP_SIZE32(param_length); 782163953Srrs /* update remaining ASCONF message length to process */ 783163953Srrs if (offset >= asconf_limit) { 784163953Srrs /* no more data in the mbuf chain */ 785163953Srrs break; 786163953Srrs } 787163953Srrs /* get pointer to next asconf param */ 788163953Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, 789163953Srrs sizeof(struct sctp_asconf_paramhdr), 790163953Srrs (uint8_t *) & aparam_buf); 791163953Srrs if (aph == NULL) { 792163953Srrs /* can't get an asconf paramhdr */ 793169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: can't get asconf param hdr!\n"); 794163953Srrs /* FIX ME - add error here... */ 795163953Srrs } 796169420Srrs } 797163953Srrs 798163953Srrssend_reply: 799163953Srrs ack_cp->ch.chunk_length = htons(ack_cp->ch.chunk_length); 800163953Srrs /* save the ASCONF-ACK reply */ 801179783Srrs ack = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asconf_ack), 802171990Srrs struct sctp_asconf_ack); 803171990Srrs if (ack == NULL) { 804171990Srrs sctp_m_freem(m_ack); 805171990Srrs return; 806171990Srrs } 807171990Srrs ack->serial_number = serial_num; 808171990Srrs ack->last_sent_to = NULL; 809171990Srrs ack->data = m_ack; 810209178Stuexen ack->len = 0; 811221249Stuexen for (n = m_ack; n != NULL; n = SCTP_BUF_NEXT(n)) { 812171990Srrs ack->len += SCTP_BUF_LEN(n); 813171990Srrs } 814171990Srrs TAILQ_INSERT_TAIL(&stcb->asoc.asconf_ack_sent, ack, next); 815163953Srrs 816163953Srrs /* see if last_control_chunk_from is set properly (use IP src addr) */ 817163953Srrs if (stcb->asoc.last_control_chunk_from == NULL) { 818163953Srrs /* 819163953Srrs * this could happen if the source address was just newly 820163953Srrs * added 821163953Srrs */ 822169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: looking up net for IP source address\n"); 823237904Stuexen SCTPDBG(SCTP_DEBUG_ASCONF1, "Looking for IP source: "); 824237904Stuexen SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, src); 825237904Stuexen /* look up the from address */ 826237904Stuexen stcb->asoc.last_control_chunk_from = sctp_findnet(stcb, src); 827237904Stuexen#ifdef SCTP_DEBUG 828237904Stuexen if (stcb->asoc.last_control_chunk_from == NULL) { 829237904Stuexen SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf: IP source address not found?!\n"); 830163953Srrs } 831169420Srrs#endif 832163953Srrs } 833163953Srrs} 834163953Srrs 835163953Srrs/* 836163953Srrs * does the address match? returns 0 if not, 1 if so 837163953Srrs */ 838163953Srrsstatic uint32_t 839163953Srrssctp_asconf_addr_match(struct sctp_asconf_addr *aa, struct sockaddr *sa) 840163953Srrs{ 841221249Stuexen switch (sa->sa_family) { 842163953Srrs#ifdef INET6 843221249Stuexen case AF_INET6: 844221249Stuexen { 845221249Stuexen /* XXX scopeid */ 846221249Stuexen struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa; 847163953Srrs 848221249Stuexen if ((aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) && 849221249Stuexen (memcmp(&aa->ap.addrp.addr, &sin6->sin6_addr, 850221249Stuexen sizeof(struct in6_addr)) == 0)) { 851221249Stuexen return (1); 852221249Stuexen } 853221249Stuexen break; 854163953Srrs } 855221249Stuexen#endif 856221249Stuexen#ifdef INET 857221249Stuexen case AF_INET: 858221249Stuexen { 859221249Stuexen struct sockaddr_in *sin = (struct sockaddr_in *)sa; 860163953Srrs 861221249Stuexen if ((aa->ap.addrp.ph.param_type == SCTP_IPV4_ADDRESS) && 862221249Stuexen (memcmp(&aa->ap.addrp.addr, &sin->sin_addr, 863221249Stuexen sizeof(struct in_addr)) == 0)) { 864221249Stuexen return (1); 865221249Stuexen } 866221249Stuexen break; 867163953Srrs } 868221249Stuexen#endif 869221249Stuexen default: 870221249Stuexen break; 871163953Srrs } 872163953Srrs return (0); 873163953Srrs} 874163953Srrs 875163953Srrs/* 876179157Srrs * does the address match? returns 0 if not, 1 if so 877179157Srrs */ 878179157Srrsstatic uint32_t 879221249Stuexensctp_addr_match(struct sctp_paramhdr *ph, struct sockaddr *sa) 880179157Srrs{ 881266054Stuexen#if defined(INET) || defined(INET6) 882179157Srrs uint16_t param_type, param_length; 883179157Srrs 884221249Stuexen param_type = ntohs(ph->param_type); 885221249Stuexen param_length = ntohs(ph->param_length); 886266054Stuexen#endif 887221249Stuexen switch (sa->sa_family) { 888179157Srrs#ifdef INET6 889221249Stuexen case AF_INET6: 890221249Stuexen { 891221249Stuexen /* XXX scopeid */ 892221249Stuexen struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa; 893221249Stuexen struct sctp_ipv6addr_param *v6addr; 894179157Srrs 895221249Stuexen v6addr = (struct sctp_ipv6addr_param *)ph; 896221249Stuexen if ((param_type == SCTP_IPV6_ADDRESS) && 897266054Stuexen (param_length == sizeof(struct sctp_ipv6addr_param)) && 898221249Stuexen (memcmp(&v6addr->addr, &sin6->sin6_addr, 899221249Stuexen sizeof(struct in6_addr)) == 0)) { 900221249Stuexen return (1); 901221249Stuexen } 902221249Stuexen break; 903179157Srrs } 904180955Srrs#endif 905221249Stuexen#ifdef INET 906221249Stuexen case AF_INET: 907221249Stuexen { 908221249Stuexen struct sockaddr_in *sin = (struct sockaddr_in *)sa; 909221249Stuexen struct sctp_ipv4addr_param *v4addr; 910179157Srrs 911221249Stuexen v4addr = (struct sctp_ipv4addr_param *)ph; 912221249Stuexen if ((param_type == SCTP_IPV4_ADDRESS) && 913266054Stuexen (param_length == sizeof(struct sctp_ipv4addr_param)) && 914221249Stuexen (memcmp(&v4addr->addr, &sin->sin_addr, 915221249Stuexen sizeof(struct in_addr)) == 0)) { 916221249Stuexen return (1); 917221249Stuexen } 918221249Stuexen break; 919179157Srrs } 920221249Stuexen#endif 921221249Stuexen default: 922221249Stuexen break; 923179157Srrs } 924179157Srrs return (0); 925179157Srrs} 926179157Srrs 927179157Srrs/* 928163953Srrs * Cleanup for non-responded/OP ERR'd ASCONF 929163953Srrs */ 930163953Srrsvoid 931163953Srrssctp_asconf_cleanup(struct sctp_tcb *stcb, struct sctp_nets *net) 932163953Srrs{ 933163953Srrs /* mark peer as ASCONF incapable */ 934163953Srrs stcb->asoc.peer_supports_asconf = 0; 935163953Srrs /* 936163953Srrs * clear out any existing asconfs going out 937163953Srrs */ 938169655Srrs sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net, 939169655Srrs SCTP_FROM_SCTP_ASCONF + SCTP_LOC_2); 940179157Srrs stcb->asoc.asconf_seq_out_acked = stcb->asoc.asconf_seq_out; 941163953Srrs /* remove the old ASCONF on our outbound queue */ 942163953Srrs sctp_toss_old_asconf(stcb); 943163953Srrs} 944163953Srrs 945163953Srrs/* 946171858Srrs * cleanup any cached source addresses that may be topologically 947171858Srrs * incorrect after a new address has been added to this interface. 948171858Srrs */ 949171858Srrsstatic void 950171858Srrssctp_asconf_nets_cleanup(struct sctp_tcb *stcb, struct sctp_ifn *ifn) 951171858Srrs{ 952171858Srrs struct sctp_nets *net; 953171858Srrs 954171858Srrs /* 955171858Srrs * Ideally, we want to only clear cached routes and source addresses 956171858Srrs * that are topologically incorrect. But since there is no easy way 957171858Srrs * to know whether the newly added address on the ifn would cause a 958171858Srrs * routing change (i.e. a new egress interface would be chosen) 959171858Srrs * without doing a new routing lookup and source address selection, 960171858Srrs * we will (for now) just flush any cached route using a different 961171858Srrs * ifn (and cached source addrs) and let output re-choose them 962171858Srrs * during the next send on that net. 963171858Srrs */ 964171858Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 965171858Srrs /* 966171858Srrs * clear any cached route (and cached source address) if the 967171858Srrs * route's interface is NOT the same as the address change. 968171858Srrs * If it's the same interface, just clear the cached source 969171858Srrs * address. 970171858Srrs */ 971171858Srrs if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro) && 972209178Stuexen ((ifn == NULL) || 973209178Stuexen (SCTP_GET_IF_INDEX_FROM_ROUTE(&net->ro) != ifn->ifn_index))) { 974171858Srrs /* clear any cached route */ 975171858Srrs RTFREE(net->ro.ro_rt); 976171858Srrs net->ro.ro_rt = NULL; 977171858Srrs } 978171858Srrs /* clear any cached source address */ 979171858Srrs if (net->src_addr_selected) { 980171858Srrs sctp_free_ifa(net->ro._s_addr); 981171858Srrs net->ro._s_addr = NULL; 982171858Srrs net->src_addr_selected = 0; 983171858Srrs } 984171858Srrs } 985171858Srrs} 986171858Srrs 987172091Srrs 988172091Srrsvoid 989172091Srrssctp_assoc_immediate_retrans(struct sctp_tcb *stcb, struct sctp_nets *dstnet) 990172091Srrs{ 991172091Srrs int error; 992172091Srrs 993172118Srrs if (dstnet->dest_state & SCTP_ADDR_UNCONFIRMED) { 994172118Srrs return; 995172118Srrs } 996172091Srrs if (stcb->asoc.deleted_primary == NULL) { 997172091Srrs return; 998172091Srrs } 999172091Srrs if (!TAILQ_EMPTY(&stcb->asoc.sent_queue)) { 1000172157Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "assoc_immediate_retrans: Deleted primary is "); 1001172091Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &stcb->asoc.deleted_primary->ro._l_addr.sa); 1002172091Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "Current Primary is "); 1003172091Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &stcb->asoc.primary_destination->ro._l_addr.sa); 1004172091Srrs sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, 1005172091Srrs stcb->asoc.deleted_primary, 1006172091Srrs SCTP_FROM_SCTP_TIMER + SCTP_LOC_8); 1007172091Srrs stcb->asoc.num_send_timers_up--; 1008172091Srrs if (stcb->asoc.num_send_timers_up < 0) { 1009172091Srrs stcb->asoc.num_send_timers_up = 0; 1010172091Srrs } 1011172091Srrs SCTP_TCB_LOCK_ASSERT(stcb); 1012172091Srrs error = sctp_t3rxt_timer(stcb->sctp_ep, stcb, 1013172091Srrs stcb->asoc.deleted_primary); 1014172091Srrs if (error) { 1015172091Srrs SCTP_INP_DECR_REF(stcb->sctp_ep); 1016172091Srrs return; 1017172091Srrs } 1018172091Srrs SCTP_TCB_LOCK_ASSERT(stcb); 1019172091Srrs#ifdef SCTP_AUDITING_ENABLED 1020207099Stuexen sctp_auditing(4, stcb->sctp_ep, stcb, stcb->asoc.deleted_primary); 1021172091Srrs#endif 1022172091Srrs sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1023172091Srrs if ((stcb->asoc.num_send_timers_up == 0) && 1024172091Srrs (stcb->asoc.sent_queue_cnt > 0)) { 1025172091Srrs struct sctp_tmit_chunk *chk; 1026172091Srrs 1027172091Srrs chk = TAILQ_FIRST(&stcb->asoc.sent_queue); 1028172091Srrs sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, 1029172091Srrs stcb, chk->whoTo); 1030172091Srrs } 1031172091Srrs } 1032172091Srrs return; 1033172091Srrs} 1034172091Srrs 1035171990Srrsstatic int 1036171990Srrs sctp_asconf_queue_mgmt(struct sctp_tcb *, struct sctp_ifa *, uint16_t); 1037171990Srrs 1038172091Srrsvoid 1039171990Srrssctp_net_immediate_retrans(struct sctp_tcb *stcb, struct sctp_nets *net) 1040171990Srrs{ 1041171990Srrs struct sctp_tmit_chunk *chk; 1042171990Srrs 1043172157Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "net_immediate_retrans: RTO is %d\n", net->RTO); 1044171990Srrs sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net, 1045171990Srrs SCTP_FROM_SCTP_TIMER + SCTP_LOC_5); 1046171990Srrs stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net); 1047171990Srrs net->error_count = 0; 1048171990Srrs TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 1049171990Srrs if (chk->whoTo == net) { 1050172091Srrs if (chk->sent < SCTP_DATAGRAM_RESEND) { 1051172091Srrs chk->sent = SCTP_DATAGRAM_RESEND; 1052172091Srrs sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt); 1053172396Srrs sctp_flight_size_decrease(chk); 1054172396Srrs sctp_total_flight_decrease(stcb, chk); 1055172396Srrs net->marked_retrans++; 1056172396Srrs stcb->asoc.marked_retrans++; 1057172091Srrs } 1058171990Srrs } 1059171990Srrs } 1060172396Srrs if (net->marked_retrans) { 1061172396Srrs sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1062172396Srrs } 1063171990Srrs} 1064171990Srrs 1065171990Srrsstatic void 1066171990Srrssctp_path_check_and_react(struct sctp_tcb *stcb, struct sctp_ifa *newifa) 1067171990Srrs{ 1068171990Srrs struct sctp_nets *net; 1069171990Srrs int addrnum, changed; 1070171990Srrs 1071171990Srrs /* 1072171990Srrs * If number of local valid addresses is 1, the valid address is 1073206137Stuexen * probably newly added address. Several valid addresses in this 1074171990Srrs * association. A source address may not be changed. Additionally, 1075171990Srrs * they can be configured on a same interface as "alias" addresses. 1076171990Srrs * (by micchie) 1077171990Srrs */ 1078171990Srrs addrnum = sctp_local_addr_count(stcb); 1079171990Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "p_check_react(): %d local addresses\n", 1080171990Srrs addrnum); 1081171990Srrs if (addrnum == 1) { 1082171990Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1083171990Srrs /* clear any cached route and source address */ 1084171990Srrs if (net->ro.ro_rt) { 1085171990Srrs RTFREE(net->ro.ro_rt); 1086171990Srrs net->ro.ro_rt = NULL; 1087171990Srrs } 1088171990Srrs if (net->src_addr_selected) { 1089171990Srrs sctp_free_ifa(net->ro._s_addr); 1090171990Srrs net->ro._s_addr = NULL; 1091171990Srrs net->src_addr_selected = 0; 1092171990Srrs } 1093171990Srrs /* Retransmit unacknowledged DATA chunks immediately */ 1094171990Srrs if (sctp_is_mobility_feature_on(stcb->sctp_ep, 1095171990Srrs SCTP_MOBILITY_FASTHANDOFF)) { 1096171990Srrs sctp_net_immediate_retrans(stcb, net); 1097171990Srrs } 1098171990Srrs /* also, SET PRIMARY is maybe already sent */ 1099171990Srrs } 1100171990Srrs return; 1101171990Srrs } 1102171990Srrs /* Multiple local addresses exsist in the association. */ 1103171990Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1104171990Srrs /* clear any cached route and source address */ 1105171990Srrs if (net->ro.ro_rt) { 1106171990Srrs RTFREE(net->ro.ro_rt); 1107171990Srrs net->ro.ro_rt = NULL; 1108171990Srrs } 1109171990Srrs if (net->src_addr_selected) { 1110171990Srrs sctp_free_ifa(net->ro._s_addr); 1111171990Srrs net->ro._s_addr = NULL; 1112171990Srrs net->src_addr_selected = 0; 1113171990Srrs } 1114171990Srrs /* 1115171990Srrs * Check if the nexthop is corresponding to the new address. 1116171990Srrs * If the new address is corresponding to the current 1117206137Stuexen * nexthop, the path will be changed. If the new address is 1118171990Srrs * NOT corresponding to the current nexthop, the path will 1119171990Srrs * not be changed. 1120171990Srrs */ 1121171990Srrs SCTP_RTALLOC((sctp_route_t *) & net->ro, 1122171990Srrs stcb->sctp_ep->def_vrf_id); 1123171990Srrs if (net->ro.ro_rt == NULL) 1124171990Srrs continue; 1125171990Srrs 1126172137Srrs changed = 0; 1127221249Stuexen switch (net->ro._l_addr.sa.sa_family) { 1128221249Stuexen#ifdef INET 1129221249Stuexen case AF_INET: 1130221249Stuexen if (sctp_v4src_match_nexthop(newifa, (sctp_route_t *) & net->ro)) { 1131171990Srrs changed = 1; 1132221249Stuexen } 1133221249Stuexen break; 1134221249Stuexen#endif 1135178251Srrs#ifdef INET6 1136221249Stuexen case AF_INET6: 1137171990Srrs if (sctp_v6src_match_nexthop( 1138221249Stuexen &newifa->address.sin6, (sctp_route_t *) & net->ro)) { 1139171990Srrs changed = 1; 1140221249Stuexen } 1141221249Stuexen break; 1142221249Stuexen#endif 1143221249Stuexen default: 1144221249Stuexen break; 1145171990Srrs } 1146171990Srrs /* 1147171990Srrs * if the newly added address does not relate routing 1148171990Srrs * information, we skip. 1149171990Srrs */ 1150171990Srrs if (changed == 0) 1151171990Srrs continue; 1152171990Srrs /* Retransmit unacknowledged DATA chunks immediately */ 1153171990Srrs if (sctp_is_mobility_feature_on(stcb->sctp_ep, 1154171990Srrs SCTP_MOBILITY_FASTHANDOFF)) { 1155171990Srrs sctp_net_immediate_retrans(stcb, net); 1156171990Srrs } 1157171990Srrs /* Send SET PRIMARY for this new address */ 1158171990Srrs if (net == stcb->asoc.primary_destination) { 1159171990Srrs (void)sctp_asconf_queue_mgmt(stcb, newifa, 1160171990Srrs SCTP_SET_PRIM_ADDR); 1161171990Srrs } 1162171990Srrs } 1163171990Srrs} 1164171990Srrs 1165171858Srrs/* 1166163953Srrs * process an ADD/DELETE IP ack from peer. 1167171572Srrs * addr: corresponding sctp_ifa to the address being added/deleted. 1168163953Srrs * type: SCTP_ADD_IP_ADDRESS or SCTP_DEL_IP_ADDRESS. 1169163953Srrs * flag: 1=success, 0=failure. 1170163953Srrs */ 1171163953Srrsstatic void 1172231038Stuexensctp_asconf_addr_mgmt_ack(struct sctp_tcb *stcb, struct sctp_ifa *addr, uint32_t flag) 1173163953Srrs{ 1174163953Srrs /* 1175163953Srrs * do the necessary asoc list work- if we get a failure indication, 1176171858Srrs * leave the address on the assoc's restricted list. If we get a 1177171858Srrs * success indication, remove the address from the restricted list. 1178163953Srrs */ 1179163953Srrs /* 1180163953Srrs * Note: this will only occur for ADD_IP_ADDRESS, since 1181163953Srrs * DEL_IP_ADDRESS is never actually added to the list... 1182163953Srrs */ 1183163953Srrs if (flag) { 1184171572Srrs /* success case, so remove from the restricted list */ 1185171572Srrs sctp_del_local_addr_restricted(stcb, addr); 1186171858Srrs 1187172190Srrs if (sctp_is_mobility_feature_on(stcb->sctp_ep, 1188172396Srrs SCTP_MOBILITY_BASE) || 1189172396Srrs sctp_is_mobility_feature_on(stcb->sctp_ep, 1190172396Srrs SCTP_MOBILITY_FASTHANDOFF)) { 1191171990Srrs sctp_path_check_and_react(stcb, addr); 1192171990Srrs return; 1193171990Srrs } 1194172190Srrs /* clear any cached/topologically incorrect source addresses */ 1195171858Srrs sctp_asconf_nets_cleanup(stcb, addr->ifn_p); 1196163953Srrs } 1197163953Srrs /* else, leave it on the list */ 1198163953Srrs} 1199163953Srrs 1200163953Srrs/* 1201171572Srrs * add an asconf add/delete/set primary IP address parameter to the queue. 1202163953Srrs * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR. 1203171572Srrs * returns 0 if queued, -1 if not queued/removed. 1204171572Srrs * NOTE: if adding, but a delete for the same address is already scheduled 1205171572Srrs * (and not yet sent out), simply remove it from queue. Same for deleting 1206171572Srrs * an address already scheduled for add. If a duplicate operation is found, 1207171572Srrs * ignore the new one. 1208163953Srrs */ 1209171572Srrsstatic int 1210171572Srrssctp_asconf_queue_mgmt(struct sctp_tcb *stcb, struct sctp_ifa *ifa, 1211171477Srrs uint16_t type) 1212163953Srrs{ 1213163953Srrs struct sctp_asconf_addr *aa, *aa_next; 1214163953Srrs 1215163953Srrs /* make sure the request isn't already in the queue */ 1216216822Stuexen TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) { 1217163953Srrs /* address match? */ 1218167598Srrs if (sctp_asconf_addr_match(aa, &ifa->address.sa) == 0) 1219163953Srrs continue; 1220179157Srrs /* 1221179157Srrs * is the request already in queue but not sent? pass the 1222179157Srrs * request already sent in order to resolve the following 1223179157Srrs * case: 1. arrival of ADD, then sent 2. arrival of DEL. we 1224179157Srrs * can't remove the ADD request already sent 3. arrival of 1225179157Srrs * ADD 1226179157Srrs */ 1227179157Srrs if (aa->ap.aph.ph.param_type == type && aa->sent == 0) { 1228163953Srrs return (-1); 1229163953Srrs } 1230163953Srrs /* is the negative request already in queue, and not sent */ 1231171572Srrs if ((aa->sent == 0) && (type == SCTP_ADD_IP_ADDRESS) && 1232171572Srrs (aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS)) { 1233171572Srrs /* add requested, delete already queued */ 1234163953Srrs TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next); 1235171572Srrs /* remove the ifa from the restricted list */ 1236171572Srrs sctp_del_local_addr_restricted(stcb, ifa); 1237171572Srrs /* free the asconf param */ 1238170091Srrs SCTP_FREE(aa, SCTP_M_ASC_ADDR); 1239171572Srrs SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_mgmt: add removes queued entry\n"); 1240163953Srrs return (-1); 1241163953Srrs } 1242171572Srrs if ((aa->sent == 0) && (type == SCTP_DEL_IP_ADDRESS) && 1243171572Srrs (aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS)) { 1244171572Srrs /* delete requested, add already queued */ 1245171572Srrs TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next); 1246171572Srrs /* remove the aa->ifa from the restricted list */ 1247171572Srrs sctp_del_local_addr_restricted(stcb, aa->ifa); 1248171572Srrs /* free the asconf param */ 1249171572Srrs SCTP_FREE(aa, SCTP_M_ASC_ADDR); 1250171572Srrs SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_mgmt: delete removes queued entry\n"); 1251171572Srrs return (-1); 1252171572Srrs } 1253163953Srrs } /* for each aa */ 1254163953Srrs 1255163953Srrs /* adding new request to the queue */ 1256171572Srrs SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa), 1257171572Srrs SCTP_M_ASC_ADDR); 1258163953Srrs if (aa == NULL) { 1259163953Srrs /* didn't get memory */ 1260171572Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "asconf_queue_mgmt: failed to get memory!\n"); 1261163953Srrs return (-1); 1262163953Srrs } 1263185694Srrs aa->special_del = 0; 1264163953Srrs /* fill in asconf address parameter fields */ 1265163953Srrs /* top level elements are "networked" during send */ 1266163953Srrs aa->ap.aph.ph.param_type = type; 1267163953Srrs aa->ifa = ifa; 1268168299Srrs atomic_add_int(&ifa->refcount, 1); 1269163953Srrs /* correlation_id filled in during send routine later... */ 1270221249Stuexen switch (ifa->address.sa.sa_family) { 1271221249Stuexen#ifdef INET6 1272221249Stuexen case AF_INET6: 1273221249Stuexen { 1274221249Stuexen struct sockaddr_in6 *sin6; 1275163953Srrs 1276221249Stuexen sin6 = (struct sockaddr_in6 *)&ifa->address.sa; 1277221249Stuexen aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS; 1278221249Stuexen aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param)); 1279221249Stuexen aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + 1280221249Stuexen sizeof(struct sctp_ipv6addr_param); 1281221249Stuexen memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr, 1282221249Stuexen sizeof(struct in6_addr)); 1283221249Stuexen break; 1284221249Stuexen } 1285221249Stuexen#endif 1286221249Stuexen#ifdef INET 1287221249Stuexen case AF_INET: 1288221249Stuexen { 1289221249Stuexen struct sockaddr_in *sin; 1290163953Srrs 1291221249Stuexen sin = (struct sockaddr_in *)&ifa->address.sa; 1292221249Stuexen aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS; 1293221249Stuexen aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param)); 1294221249Stuexen aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + 1295221249Stuexen sizeof(struct sctp_ipv4addr_param); 1296221249Stuexen memcpy(&aa->ap.addrp.addr, &sin->sin_addr, 1297221249Stuexen sizeof(struct in_addr)); 1298221249Stuexen break; 1299221249Stuexen } 1300221249Stuexen#endif 1301221249Stuexen default: 1302163953Srrs /* invalid family! */ 1303170091Srrs SCTP_FREE(aa, SCTP_M_ASC_ADDR); 1304172190Srrs sctp_free_ifa(ifa); 1305163953Srrs return (-1); 1306163953Srrs } 1307163953Srrs aa->sent = 0; /* clear sent flag */ 1308163953Srrs 1309179157Srrs TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next); 1310163953Srrs#ifdef SCTP_DEBUG 1311218232Srrs if (SCTP_BASE_SYSCTL(sctp_debug_on) & SCTP_DEBUG_ASCONF2) { 1312179157Srrs if (type == SCTP_ADD_IP_ADDRESS) { 1313179157Srrs SCTP_PRINTF("asconf_queue_mgmt: inserted asconf ADD_IP_ADDRESS: "); 1314265956Stuexen SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa); 1315179157Srrs } else if (type == SCTP_DEL_IP_ADDRESS) { 1316179157Srrs SCTP_PRINTF("asconf_queue_mgmt: appended asconf DEL_IP_ADDRESS: "); 1317265956Stuexen SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa); 1318179157Srrs } else { 1319179157Srrs SCTP_PRINTF("asconf_queue_mgmt: appended asconf SET_PRIM_ADDR: "); 1320265956Stuexen SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, &ifa->address.sa); 1321163953Srrs } 1322179157Srrs } 1323169420Srrs#endif 1324163953Srrs 1325163953Srrs return (0); 1326163953Srrs} 1327163953Srrs 1328171572Srrs 1329163953Srrs/* 1330171572Srrs * add an asconf operation for the given ifa and type. 1331171572Srrs * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR. 1332171572Srrs * returns 0 if completed, -1 if not completed, 1 if immediate send is 1333171572Srrs * advisable. 1334171572Srrs */ 1335171572Srrsstatic int 1336171572Srrssctp_asconf_queue_add(struct sctp_tcb *stcb, struct sctp_ifa *ifa, 1337171572Srrs uint16_t type) 1338171572Srrs{ 1339171572Srrs uint32_t status; 1340171572Srrs int pending_delete_queued = 0; 1341171572Srrs 1342171572Srrs /* see if peer supports ASCONF */ 1343171572Srrs if (stcb->asoc.peer_supports_asconf == 0) { 1344171572Srrs return (-1); 1345171572Srrs } 1346171572Srrs /* 1347171572Srrs * if this is deleting the last address from the assoc, mark it as 1348171572Srrs * pending. 1349171572Srrs */ 1350171572Srrs if ((type == SCTP_DEL_IP_ADDRESS) && !stcb->asoc.asconf_del_pending && 1351171572Srrs (sctp_local_addr_count(stcb) < 2)) { 1352171572Srrs /* set the pending delete info only */ 1353171572Srrs stcb->asoc.asconf_del_pending = 1; 1354171572Srrs stcb->asoc.asconf_addr_del_pending = ifa; 1355171572Srrs atomic_add_int(&ifa->refcount, 1); 1356171572Srrs SCTPDBG(SCTP_DEBUG_ASCONF2, 1357171572Srrs "asconf_queue_add: mark delete last address pending\n"); 1358171572Srrs return (-1); 1359171572Srrs } 1360179157Srrs /* queue an asconf parameter */ 1361179157Srrs status = sctp_asconf_queue_mgmt(stcb, ifa, type); 1362179157Srrs 1363171572Srrs /* 1364171572Srrs * if this is an add, and there is a delete also pending (i.e. the 1365171572Srrs * last local address is being changed), queue the pending delete 1366171572Srrs * too. 1367171572Srrs */ 1368179157Srrs if ((type == SCTP_ADD_IP_ADDRESS) && stcb->asoc.asconf_del_pending && (status == 0)) { 1369171572Srrs /* queue in the pending delete */ 1370171572Srrs if (sctp_asconf_queue_mgmt(stcb, 1371171572Srrs stcb->asoc.asconf_addr_del_pending, 1372171572Srrs SCTP_DEL_IP_ADDRESS) == 0) { 1373171572Srrs SCTPDBG(SCTP_DEBUG_ASCONF2, "asconf_queue_add: queing pending delete\n"); 1374171572Srrs pending_delete_queued = 1; 1375171572Srrs /* clear out the pending delete info */ 1376171572Srrs stcb->asoc.asconf_del_pending = 0; 1377171572Srrs sctp_free_ifa(stcb->asoc.asconf_addr_del_pending); 1378171572Srrs stcb->asoc.asconf_addr_del_pending = NULL; 1379171572Srrs } 1380171572Srrs } 1381179157Srrs if (pending_delete_queued) { 1382171572Srrs struct sctp_nets *net; 1383171572Srrs 1384171572Srrs /* 1385171572Srrs * since we know that the only/last address is now being 1386171572Srrs * changed in this case, reset the cwnd/rto on all nets to 1387171572Srrs * start as a new address and path. Also clear the error 1388171572Srrs * counts to give the assoc the best chance to complete the 1389171572Srrs * address change. 1390171572Srrs */ 1391171572Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1392171572Srrs stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, 1393171572Srrs net); 1394171572Srrs net->RTO = 0; 1395171572Srrs net->error_count = 0; 1396171572Srrs } 1397171572Srrs stcb->asoc.overall_error_count = 0; 1398179783Srrs if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { 1399171943Srrs sctp_misc_ints(SCTP_THRESHOLD_CLEAR, 1400171943Srrs stcb->asoc.overall_error_count, 1401171943Srrs 0, 1402171943Srrs SCTP_FROM_SCTP_ASCONF, 1403171943Srrs __LINE__); 1404171943Srrs } 1405171572Srrs /* queue in an advisory set primary too */ 1406171572Srrs (void)sctp_asconf_queue_mgmt(stcb, ifa, SCTP_SET_PRIM_ADDR); 1407171572Srrs /* let caller know we should send this out immediately */ 1408171572Srrs status = 1; 1409171572Srrs } 1410171572Srrs return (status); 1411171572Srrs} 1412171572Srrs 1413172190Srrs/*- 1414172190Srrs * add an asconf delete IP address parameter to the queue by sockaddr and 1415172190Srrs * possibly with no sctp_ifa available. This is only called by the routine 1416172190Srrs * that checks the addresses in an INIT-ACK against the current address list. 1417163953Srrs * returns 0 if completed, non-zero if not completed. 1418172190Srrs * NOTE: if an add is already scheduled (and not yet sent out), simply 1419172190Srrs * remove it from queue. If a duplicate operation is found, ignore the 1420172190Srrs * new one. 1421163953Srrs */ 1422171572Srrsstatic int 1423172190Srrssctp_asconf_queue_sa_delete(struct sctp_tcb *stcb, struct sockaddr *sa) 1424163953Srrs{ 1425168299Srrs struct sctp_ifa *ifa; 1426163953Srrs struct sctp_asconf_addr *aa, *aa_next; 1427167598Srrs uint32_t vrf_id; 1428163953Srrs 1429169420Srrs if (stcb == NULL) { 1430169420Srrs return (-1); 1431169420Srrs } 1432163953Srrs /* see if peer supports ASCONF */ 1433163953Srrs if (stcb->asoc.peer_supports_asconf == 0) { 1434163953Srrs return (-1); 1435163953Srrs } 1436163953Srrs /* make sure the request isn't already in the queue */ 1437216822Stuexen TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) { 1438163953Srrs /* address match? */ 1439163953Srrs if (sctp_asconf_addr_match(aa, sa) == 0) 1440163953Srrs continue; 1441163953Srrs /* is the request already in queue (sent or not) */ 1442172190Srrs if (aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) { 1443163953Srrs return (-1); 1444163953Srrs } 1445163953Srrs /* is the negative request already in queue, and not sent */ 1446163953Srrs if (aa->sent == 1) 1447163953Srrs continue; 1448172190Srrs if (aa->ap.aph.ph.param_type == SCTP_ADD_IP_ADDRESS) { 1449172190Srrs /* add already queued, so remove existing entry */ 1450163953Srrs TAILQ_REMOVE(&stcb->asoc.asconf_queue, aa, next); 1451171572Srrs sctp_del_local_addr_restricted(stcb, aa->ifa); 1452163953Srrs /* free the entry */ 1453170091Srrs SCTP_FREE(aa, SCTP_M_ASC_ADDR); 1454163953Srrs return (-1); 1455163953Srrs } 1456163953Srrs } /* for each aa */ 1457172190Srrs 1458172190Srrs /* find any existing ifa-- NOTE ifa CAN be allowed to be NULL */ 1459168299Srrs if (stcb) { 1460168299Srrs vrf_id = stcb->asoc.vrf_id; 1461168299Srrs } else { 1462168299Srrs vrf_id = SCTP_DEFAULT_VRFID; 1463168299Srrs } 1464172190Srrs ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED); 1465163953Srrs 1466163953Srrs /* adding new request to the queue */ 1467171572Srrs SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa), 1468171572Srrs SCTP_M_ASC_ADDR); 1469163953Srrs if (aa == NULL) { 1470163953Srrs /* didn't get memory */ 1471169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 1472172190Srrs "sctp_asconf_queue_sa_delete: failed to get memory!\n"); 1473163953Srrs return (-1); 1474163953Srrs } 1475185694Srrs aa->special_del = 0; 1476163953Srrs /* fill in asconf address parameter fields */ 1477163953Srrs /* top level elements are "networked" during send */ 1478172190Srrs aa->ap.aph.ph.param_type = SCTP_DEL_IP_ADDRESS; 1479168299Srrs aa->ifa = ifa; 1480172190Srrs if (ifa) 1481172190Srrs atomic_add_int(&ifa->refcount, 1); 1482163953Srrs /* correlation_id filled in during send routine later... */ 1483221249Stuexen switch (sa->sa_family) { 1484221249Stuexen#ifdef INET6 1485221249Stuexen case AF_INET6: 1486221249Stuexen { 1487221249Stuexen /* IPv6 address */ 1488221249Stuexen struct sockaddr_in6 *sin6; 1489163953Srrs 1490221249Stuexen sin6 = (struct sockaddr_in6 *)sa; 1491221249Stuexen aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS; 1492221249Stuexen aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv6addr_param)); 1493221249Stuexen aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv6addr_param); 1494221249Stuexen memcpy(&aa->ap.addrp.addr, &sin6->sin6_addr, 1495221249Stuexen sizeof(struct in6_addr)); 1496221249Stuexen break; 1497221249Stuexen } 1498221249Stuexen#endif 1499221249Stuexen#ifdef INET 1500221249Stuexen case AF_INET: 1501221249Stuexen { 1502221249Stuexen /* IPv4 address */ 1503221249Stuexen struct sockaddr_in *sin = (struct sockaddr_in *)sa; 1504163953Srrs 1505221249Stuexen aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS; 1506221249Stuexen aa->ap.addrp.ph.param_length = (sizeof(struct sctp_ipv4addr_param)); 1507221249Stuexen aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_paramhdr) + sizeof(struct sctp_ipv4addr_param); 1508221249Stuexen memcpy(&aa->ap.addrp.addr, &sin->sin_addr, 1509221249Stuexen sizeof(struct in_addr)); 1510221249Stuexen break; 1511221249Stuexen } 1512221249Stuexen#endif 1513221249Stuexen default: 1514163953Srrs /* invalid family! */ 1515170091Srrs SCTP_FREE(aa, SCTP_M_ASC_ADDR); 1516172190Srrs if (ifa) 1517172190Srrs sctp_free_ifa(ifa); 1518163953Srrs return (-1); 1519163953Srrs } 1520163953Srrs aa->sent = 0; /* clear sent flag */ 1521163953Srrs 1522172190Srrs /* delete goes to the back of the queue */ 1523172190Srrs TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next); 1524163953Srrs 1525172218Srrs /* sa_ignore MEMLEAK {memory is put on the tailq} */ 1526163953Srrs return (0); 1527163953Srrs} 1528163953Srrs 1529163953Srrs/* 1530163953Srrs * find a specific asconf param on our "sent" queue 1531163953Srrs */ 1532163953Srrsstatic struct sctp_asconf_addr * 1533163953Srrssctp_asconf_find_param(struct sctp_tcb *stcb, uint32_t correlation_id) 1534163953Srrs{ 1535163953Srrs struct sctp_asconf_addr *aa; 1536163953Srrs 1537163953Srrs TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) { 1538163953Srrs if (aa->ap.aph.correlation_id == correlation_id && 1539163953Srrs aa->sent == 1) { 1540163953Srrs /* found it */ 1541163953Srrs return (aa); 1542163953Srrs } 1543163953Srrs } 1544163953Srrs /* didn't find it */ 1545163953Srrs return (NULL); 1546163953Srrs} 1547163953Srrs 1548163953Srrs/* 1549163953Srrs * process an SCTP_ERROR_CAUSE_IND for a ASCONF-ACK parameter and do 1550163953Srrs * notifications based on the error response 1551163953Srrs */ 1552163953Srrsstatic void 1553163953Srrssctp_asconf_process_error(struct sctp_tcb *stcb, 1554163953Srrs struct sctp_asconf_paramhdr *aph) 1555163953Srrs{ 1556163953Srrs struct sctp_error_cause *eh; 1557163953Srrs struct sctp_paramhdr *ph; 1558163953Srrs uint16_t param_type; 1559163953Srrs uint16_t error_code; 1560163953Srrs 1561163953Srrs eh = (struct sctp_error_cause *)(aph + 1); 1562163953Srrs ph = (struct sctp_paramhdr *)(eh + 1); 1563163953Srrs /* validate lengths */ 1564163953Srrs if (htons(eh->length) + sizeof(struct sctp_error_cause) > 1565163953Srrs htons(aph->ph.param_length)) { 1566163953Srrs /* invalid error cause length */ 1567169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 1568169420Srrs "asconf_process_error: cause element too long\n"); 1569163953Srrs return; 1570163953Srrs } 1571163953Srrs if (htons(ph->param_length) + sizeof(struct sctp_paramhdr) > 1572163953Srrs htons(eh->length)) { 1573163953Srrs /* invalid included TLV length */ 1574169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 1575169420Srrs "asconf_process_error: included TLV too long\n"); 1576163953Srrs return; 1577163953Srrs } 1578163953Srrs /* which error code ? */ 1579163953Srrs error_code = ntohs(eh->code); 1580163953Srrs param_type = ntohs(aph->ph.param_type); 1581163953Srrs /* FIX: this should go back up the REMOTE_ERROR ULP notify */ 1582163953Srrs switch (error_code) { 1583163953Srrs case SCTP_CAUSE_RESOURCE_SHORTAGE: 1584163953Srrs /* we allow ourselves to "try again" for this error */ 1585163953Srrs break; 1586163953Srrs default: 1587163953Srrs /* peer can't handle it... */ 1588163953Srrs switch (param_type) { 1589163953Srrs case SCTP_ADD_IP_ADDRESS: 1590163953Srrs case SCTP_DEL_IP_ADDRESS: 1591163953Srrs stcb->asoc.peer_supports_asconf = 0; 1592163953Srrs break; 1593163953Srrs case SCTP_SET_PRIM_ADDR: 1594163953Srrs stcb->asoc.peer_supports_asconf = 0; 1595163953Srrs break; 1596163953Srrs default: 1597163953Srrs break; 1598163953Srrs } 1599163953Srrs } 1600163953Srrs} 1601163953Srrs 1602163953Srrs/* 1603171477Srrs * process an asconf queue param. 1604171477Srrs * aparam: parameter to process, will be removed from the queue. 1605171477Srrs * flag: 1=success case, 0=failure case 1606163953Srrs */ 1607163953Srrsstatic void 1608163953Srrssctp_asconf_process_param_ack(struct sctp_tcb *stcb, 1609163953Srrs struct sctp_asconf_addr *aparam, uint32_t flag) 1610163953Srrs{ 1611163953Srrs uint16_t param_type; 1612163953Srrs 1613163953Srrs /* process this param */ 1614163953Srrs param_type = aparam->ap.aph.ph.param_type; 1615163953Srrs switch (param_type) { 1616163953Srrs case SCTP_ADD_IP_ADDRESS: 1617169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 1618169420Srrs "process_param_ack: added IP address\n"); 1619231038Stuexen sctp_asconf_addr_mgmt_ack(stcb, aparam->ifa, flag); 1620163953Srrs break; 1621163953Srrs case SCTP_DEL_IP_ADDRESS: 1622169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 1623169420Srrs "process_param_ack: deleted IP address\n"); 1624163953Srrs /* nothing really to do... lists already updated */ 1625163953Srrs break; 1626163953Srrs case SCTP_SET_PRIM_ADDR: 1627179157Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 1628179157Srrs "process_param_ack: set primary IP address\n"); 1629163953Srrs /* nothing to do... peer may start using this addr */ 1630163953Srrs if (flag == 0) 1631163953Srrs stcb->asoc.peer_supports_asconf = 0; 1632163953Srrs break; 1633163953Srrs default: 1634163953Srrs /* should NEVER happen */ 1635163953Srrs break; 1636163953Srrs } 1637163953Srrs 1638163953Srrs /* remove the param and free it */ 1639163953Srrs TAILQ_REMOVE(&stcb->asoc.asconf_queue, aparam, next); 1640172190Srrs if (aparam->ifa) 1641172190Srrs sctp_free_ifa(aparam->ifa); 1642170091Srrs SCTP_FREE(aparam, SCTP_M_ASC_ADDR); 1643163953Srrs} 1644163953Srrs 1645163953Srrs/* 1646163953Srrs * cleanup from a bad asconf ack parameter 1647163953Srrs */ 1648163953Srrsstatic void 1649163953Srrssctp_asconf_ack_clear(struct sctp_tcb *stcb) 1650163953Srrs{ 1651163953Srrs /* assume peer doesn't really know how to do asconfs */ 1652163953Srrs stcb->asoc.peer_supports_asconf = 0; 1653163953Srrs /* XXX we could free the pending queue here */ 1654163953Srrs} 1655163953Srrs 1656163953Srrsvoid 1657163953Srrssctp_handle_asconf_ack(struct mbuf *m, int offset, 1658163953Srrs struct sctp_asconf_ack_chunk *cp, struct sctp_tcb *stcb, 1659172190Srrs struct sctp_nets *net, int *abort_no_unlock) 1660163953Srrs{ 1661163953Srrs struct sctp_association *asoc; 1662163953Srrs uint32_t serial_num; 1663163953Srrs uint16_t ack_length; 1664163953Srrs struct sctp_asconf_paramhdr *aph; 1665163953Srrs struct sctp_asconf_addr *aa, *aa_next; 1666163953Srrs uint32_t last_error_id = 0; /* last error correlation id */ 1667163953Srrs uint32_t id; 1668163953Srrs struct sctp_asconf_addr *ap; 1669163953Srrs 1670163953Srrs /* asconf param buffer */ 1671166675Srrs uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE]; 1672163953Srrs 1673163953Srrs /* verify minimum length */ 1674163953Srrs if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_asconf_ack_chunk)) { 1675169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 1676169420Srrs "handle_asconf_ack: chunk too small = %xh\n", 1677169420Srrs ntohs(cp->ch.chunk_length)); 1678163953Srrs return; 1679163953Srrs } 1680163953Srrs asoc = &stcb->asoc; 1681163953Srrs serial_num = ntohl(cp->serial_number); 1682163953Srrs 1683163953Srrs /* 1684163953Srrs * NOTE: we may want to handle this differently- currently, we will 1685163953Srrs * abort when we get an ack for the expected serial number + 1 (eg. 1686163953Srrs * we didn't send it), process an ack normally if it is the expected 1687163953Srrs * serial number, and re-send the previous ack for *ALL* other 1688163953Srrs * serial numbers 1689163953Srrs */ 1690163953Srrs 1691163953Srrs /* 1692163953Srrs * if the serial number is the next expected, but I didn't send it, 1693163953Srrs * abort the asoc, since someone probably just hijacked us... 1694163953Srrs */ 1695163953Srrs if (serial_num == (asoc->asconf_seq_out + 1)) { 1696169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got unexpected next serial number! Aborting asoc!\n"); 1697237884Stuexen sctp_abort_an_association(stcb->sctp_ep, stcb, NULL, SCTP_SO_NOT_LOCKED); 1698172190Srrs *abort_no_unlock = 1; 1699163953Srrs return; 1700163953Srrs } 1701179157Srrs if (serial_num != asoc->asconf_seq_out_acked + 1) { 1702163953Srrs /* got a duplicate/unexpected ASCONF-ACK */ 1703169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got duplicate/unexpected serial number = %xh (expected = %xh)\n", 1704179157Srrs serial_num, asoc->asconf_seq_out_acked + 1); 1705163953Srrs return; 1706163953Srrs } 1707179157Srrs if (serial_num == asoc->asconf_seq_out - 1) { 1708179157Srrs /* stop our timer */ 1709179157Srrs sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, net, 1710179157Srrs SCTP_FROM_SCTP_ASCONF + SCTP_LOC_3); 1711163953Srrs } 1712163953Srrs /* process the ASCONF-ACK contents */ 1713163953Srrs ack_length = ntohs(cp->ch.chunk_length) - 1714163953Srrs sizeof(struct sctp_asconf_ack_chunk); 1715163953Srrs offset += sizeof(struct sctp_asconf_ack_chunk); 1716163953Srrs /* process through all parameters */ 1717163953Srrs while (ack_length >= sizeof(struct sctp_asconf_paramhdr)) { 1718163953Srrs unsigned int param_length, param_type; 1719163953Srrs 1720163953Srrs /* get pointer to next asconf parameter */ 1721163953Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, 1722163953Srrs sizeof(struct sctp_asconf_paramhdr), aparam_buf); 1723163953Srrs if (aph == NULL) { 1724163953Srrs /* can't get an asconf paramhdr */ 1725163953Srrs sctp_asconf_ack_clear(stcb); 1726163953Srrs return; 1727163953Srrs } 1728163953Srrs param_type = ntohs(aph->ph.param_type); 1729163953Srrs param_length = ntohs(aph->ph.param_length); 1730163953Srrs if (param_length > ack_length) { 1731163953Srrs sctp_asconf_ack_clear(stcb); 1732163953Srrs return; 1733163953Srrs } 1734163953Srrs if (param_length < sizeof(struct sctp_paramhdr)) { 1735163953Srrs sctp_asconf_ack_clear(stcb); 1736163953Srrs return; 1737163953Srrs } 1738163953Srrs /* get the complete parameter... */ 1739163953Srrs if (param_length > sizeof(aparam_buf)) { 1740169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 1741169420Srrs "param length (%u) larger than buffer size!\n", param_length); 1742163953Srrs sctp_asconf_ack_clear(stcb); 1743163953Srrs return; 1744163953Srrs } 1745163953Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(m, offset, param_length, aparam_buf); 1746163953Srrs if (aph == NULL) { 1747163953Srrs sctp_asconf_ack_clear(stcb); 1748163953Srrs return; 1749163953Srrs } 1750163953Srrs /* correlation_id is transparent to peer, no ntohl needed */ 1751163953Srrs id = aph->correlation_id; 1752163953Srrs 1753163953Srrs switch (param_type) { 1754163953Srrs case SCTP_ERROR_CAUSE_IND: 1755163953Srrs last_error_id = id; 1756163953Srrs /* find the corresponding asconf param in our queue */ 1757163953Srrs ap = sctp_asconf_find_param(stcb, id); 1758163953Srrs if (ap == NULL) { 1759163953Srrs /* hmm... can't find this in our queue! */ 1760163953Srrs break; 1761163953Srrs } 1762163953Srrs /* process the parameter, failed flag */ 1763163953Srrs sctp_asconf_process_param_ack(stcb, ap, 0); 1764163953Srrs /* process the error response */ 1765163953Srrs sctp_asconf_process_error(stcb, aph); 1766163953Srrs break; 1767163953Srrs case SCTP_SUCCESS_REPORT: 1768163953Srrs /* find the corresponding asconf param in our queue */ 1769163953Srrs ap = sctp_asconf_find_param(stcb, id); 1770163953Srrs if (ap == NULL) { 1771163953Srrs /* hmm... can't find this in our queue! */ 1772163953Srrs break; 1773163953Srrs } 1774163953Srrs /* process the parameter, success flag */ 1775163953Srrs sctp_asconf_process_param_ack(stcb, ap, 1); 1776163953Srrs break; 1777163953Srrs default: 1778163953Srrs break; 1779163953Srrs } /* switch */ 1780163953Srrs 1781163953Srrs /* update remaining ASCONF-ACK message length to process */ 1782163953Srrs ack_length -= SCTP_SIZE32(param_length); 1783163953Srrs if (ack_length <= 0) { 1784163953Srrs /* no more data in the mbuf chain */ 1785163953Srrs break; 1786163953Srrs } 1787163953Srrs offset += SCTP_SIZE32(param_length); 1788163953Srrs } /* while */ 1789163953Srrs 1790163953Srrs /* 1791163953Srrs * if there are any "sent" params still on the queue, these are 1792163953Srrs * implicitly "success", or "failed" (if we got an error back) ... 1793163953Srrs * so process these appropriately 1794163953Srrs * 1795163953Srrs * we assume that the correlation_id's are monotonically increasing 1796163953Srrs * beginning from 1 and that we don't have *that* many outstanding 1797163953Srrs * at any given time 1798163953Srrs */ 1799163953Srrs if (last_error_id == 0) 1800163953Srrs last_error_id--;/* set to "max" value */ 1801216822Stuexen TAILQ_FOREACH_SAFE(aa, &stcb->asoc.asconf_queue, next, aa_next) { 1802163953Srrs if (aa->sent == 1) { 1803163953Srrs /* 1804163953Srrs * implicitly successful or failed if correlation_id 1805163953Srrs * < last_error_id, then success else, failure 1806163953Srrs */ 1807163953Srrs if (aa->ap.aph.correlation_id < last_error_id) 1808171477Srrs sctp_asconf_process_param_ack(stcb, aa, 1); 1809163953Srrs else 1810171477Srrs sctp_asconf_process_param_ack(stcb, aa, 0); 1811163953Srrs } else { 1812163953Srrs /* 1813163953Srrs * since we always process in order (FIFO queue) if 1814163953Srrs * we reach one that hasn't been sent, the rest 1815163953Srrs * should not have been sent either. so, we're 1816163953Srrs * done... 1817163953Srrs */ 1818163953Srrs break; 1819163953Srrs } 1820163953Srrs } 1821163953Srrs 1822163953Srrs /* update the next sequence number to use */ 1823179157Srrs asoc->asconf_seq_out_acked++; 1824163953Srrs /* remove the old ASCONF on our outbound queue */ 1825163953Srrs sctp_toss_old_asconf(stcb); 1826163953Srrs if (!TAILQ_EMPTY(&stcb->asoc.asconf_queue)) { 1827171572Srrs#ifdef SCTP_TIMER_BASED_ASCONF 1828163953Srrs /* we have more params, so restart our timer */ 1829163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, 1830163953Srrs stcb, net); 1831171572Srrs#else 1832171572Srrs /* we have more params, so send out more */ 1833172190Srrs sctp_send_asconf(stcb, net, SCTP_ADDR_NOT_LOCKED); 1834171572Srrs#endif 1835163953Srrs } 1836163953Srrs} 1837163953Srrs 1838178251Srrs#ifdef INET6 1839163953Srrsstatic uint32_t 1840163953Srrssctp_is_scopeid_in_nets(struct sctp_tcb *stcb, struct sockaddr *sa) 1841163953Srrs{ 1842163953Srrs struct sockaddr_in6 *sin6, *net6; 1843163953Srrs struct sctp_nets *net; 1844163953Srrs 1845163953Srrs if (sa->sa_family != AF_INET6) { 1846163953Srrs /* wrong family */ 1847163953Srrs return (0); 1848163953Srrs } 1849163953Srrs sin6 = (struct sockaddr_in6 *)sa; 1850163953Srrs if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) == 0) { 1851163953Srrs /* not link local address */ 1852163953Srrs return (0); 1853163953Srrs } 1854163953Srrs /* hunt through our destination nets list for this scope_id */ 1855163953Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1856163953Srrs if (((struct sockaddr *)(&net->ro._l_addr))->sa_family != 1857163953Srrs AF_INET6) 1858163953Srrs continue; 1859163953Srrs net6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1860163953Srrs if (IN6_IS_ADDR_LINKLOCAL(&net6->sin6_addr) == 0) 1861163953Srrs continue; 1862163953Srrs if (sctp_is_same_scope(sin6, net6)) { 1863163953Srrs /* found one */ 1864163953Srrs return (1); 1865163953Srrs } 1866163953Srrs } 1867163953Srrs /* didn't find one */ 1868163953Srrs return (0); 1869163953Srrs} 1870163953Srrs 1871178251Srrs#endif 1872178251Srrs 1873163953Srrs/* 1874163953Srrs * address management functions 1875163953Srrs */ 1876163953Srrsstatic void 1877163953Srrssctp_addr_mgmt_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 1878172190Srrs struct sctp_ifa *ifa, uint16_t type, int addr_locked) 1879163953Srrs{ 1880163953Srrs int status; 1881163953Srrs 1882224641Stuexen if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0 || 1883163953Srrs sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) { 1884163953Srrs /* subset bound, no ASCONF allowed case, so ignore */ 1885163953Srrs return; 1886163953Srrs } 1887163953Srrs /* 1888163953Srrs * note: we know this is not the subset bound, no ASCONF case eg. 1889163953Srrs * this is boundall or subset bound w/ASCONF allowed 1890163953Srrs */ 1891163953Srrs 1892267799Stuexen /* first, make sure that the address is IPv4 or IPv6 and not jailed */ 1893221249Stuexen switch (ifa->address.sa.sa_family) { 1894221249Stuexen#ifdef INET6 1895221249Stuexen case AF_INET6: 1896267799Stuexen if (prison_check_ip6(inp->ip_inp.inp.inp_cred, 1897267799Stuexen &ifa->address.sin6.sin6_addr) != 0) { 1898267799Stuexen return; 1899267799Stuexen } 1900221249Stuexen break; 1901221249Stuexen#endif 1902221249Stuexen#ifdef INET 1903221249Stuexen case AF_INET: 1904267799Stuexen if (prison_check_ip4(inp->ip_inp.inp.inp_cred, 1905267799Stuexen &ifa->address.sin.sin_addr) != 0) { 1906267799Stuexen return; 1907267799Stuexen } 1908221249Stuexen break; 1909221249Stuexen#endif 1910221249Stuexen default: 1911163953Srrs return; 1912163953Srrs } 1913221249Stuexen#ifdef INET6 1914163953Srrs /* make sure we're "allowed" to add this type of addr */ 1915167598Srrs if (ifa->address.sa.sa_family == AF_INET6) { 1916163953Srrs /* invalid if we're not a v6 endpoint */ 1917163953Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) 1918163953Srrs return; 1919163953Srrs /* is the v6 addr really valid ? */ 1920167598Srrs if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { 1921163953Srrs return; 1922163953Srrs } 1923163953Srrs } 1924221249Stuexen#endif 1925163953Srrs /* put this address on the "pending/do not use yet" list */ 1926171572Srrs sctp_add_local_addr_restricted(stcb, ifa); 1927163953Srrs /* 1928163953Srrs * check address scope if address is out of scope, don't queue 1929163953Srrs * anything... note: this would leave the address on both inp and 1930163953Srrs * asoc lists 1931163953Srrs */ 1932178251Srrs switch (ifa->address.sa.sa_family) { 1933178251Srrs#ifdef INET6 1934178251Srrs case AF_INET6: 1935178251Srrs { 1936178251Srrs struct sockaddr_in6 *sin6; 1937163953Srrs 1938178251Srrs sin6 = (struct sockaddr_in6 *)&ifa->address.sin6; 1939178251Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 1940178251Srrs /* we skip unspecifed addresses */ 1941163953Srrs return; 1942163953Srrs } 1943178251Srrs if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { 1944252961Stuexen if (stcb->asoc.scope.local_scope == 0) { 1945178251Srrs return; 1946178251Srrs } 1947178251Srrs /* is it the right link local scope? */ 1948178251Srrs if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) { 1949178251Srrs return; 1950178251Srrs } 1951178251Srrs } 1952252961Stuexen if (stcb->asoc.scope.site_scope == 0 && 1953178251Srrs IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) { 1954163953Srrs return; 1955163953Srrs } 1956178251Srrs break; 1957163953Srrs } 1958178251Srrs#endif 1959221249Stuexen#ifdef INET 1960178251Srrs case AF_INET: 1961178251Srrs { 1962178251Srrs struct sockaddr_in *sin; 1963178251Srrs struct in6pcb *inp6; 1964163953Srrs 1965178251Srrs inp6 = (struct in6pcb *)&inp->ip_inp.inp; 1966178251Srrs /* invalid if we are a v6 only endpoint */ 1967178251Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 1968178251Srrs SCTP_IPV6_V6ONLY(inp6)) 1969178251Srrs return; 1970163953Srrs 1971178251Srrs sin = (struct sockaddr_in *)&ifa->address.sa; 1972178251Srrs if (sin->sin_addr.s_addr == 0) { 1973178251Srrs /* we skip unspecifed addresses */ 1974178251Srrs return; 1975178251Srrs } 1976252961Stuexen if (stcb->asoc.scope.ipv4_local_scope == 0 && 1977178251Srrs IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) { 1978178251Srrs return; 1979178251Srrs } 1980178251Srrs break; 1981163953Srrs } 1982221249Stuexen#endif 1983178251Srrs default: 1984163953Srrs /* else, not AF_INET or AF_INET6, so skip */ 1985163953Srrs return; 1986163953Srrs } 1987163953Srrs 1988163953Srrs /* queue an asconf for this address add/delete */ 1989163953Srrs if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF)) { 1990163953Srrs /* does the peer do asconf? */ 1991163953Srrs if (stcb->asoc.peer_supports_asconf) { 1992163953Srrs /* queue an asconf for this addr */ 1993163953Srrs status = sctp_asconf_queue_add(stcb, ifa, type); 1994171572Srrs 1995163953Srrs /* 1996171572Srrs * if queued ok, and in the open state, send out the 1997171572Srrs * ASCONF. If in the non-open state, these will be 1998171572Srrs * sent when the state goes open. 1999163953Srrs */ 2000163953Srrs if (status == 0 && 2001163953Srrs SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) { 2002171572Srrs#ifdef SCTP_TIMER_BASED_ASCONF 2003163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, inp, 2004163953Srrs stcb, stcb->asoc.primary_destination); 2005171572Srrs#else 2006224641Stuexen sctp_send_asconf(stcb, NULL, addr_locked); 2007171572Srrs#endif 2008163953Srrs } 2009163953Srrs } 2010163953Srrs } 2011163953Srrs} 2012163953Srrs 2013167598Srrs 2014167598Srrsint 2015231038Stuexensctp_asconf_iterator_ep(struct sctp_inpcb *inp, void *ptr, uint32_t val SCTP_UNUSED) 2016163953Srrs{ 2017167598Srrs struct sctp_asconf_iterator *asc; 2018167598Srrs struct sctp_ifa *ifa; 2019167598Srrs struct sctp_laddr *l; 2020167598Srrs int cnt_invalid = 0; 2021163953Srrs 2022167598Srrs asc = (struct sctp_asconf_iterator *)ptr; 2023167598Srrs LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) { 2024167598Srrs ifa = l->ifa; 2025221249Stuexen switch (ifa->address.sa.sa_family) { 2026221249Stuexen#ifdef INET6 2027221249Stuexen case AF_INET6: 2028167598Srrs /* invalid if we're not a v6 endpoint */ 2029167598Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 2030167598Srrs cnt_invalid++; 2031167598Srrs if (asc->cnt == cnt_invalid) 2032167598Srrs return (1); 2033167598Srrs } 2034221249Stuexen break; 2035221249Stuexen#endif 2036221249Stuexen#ifdef INET 2037221249Stuexen case AF_INET: 2038221249Stuexen { 2039221249Stuexen /* invalid if we are a v6 only endpoint */ 2040221249Stuexen struct in6pcb *inp6; 2041163953Srrs 2042221249Stuexen inp6 = (struct in6pcb *)&inp->ip_inp.inp; 2043221249Stuexen if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 2044221249Stuexen SCTP_IPV6_V6ONLY(inp6)) { 2045221249Stuexen cnt_invalid++; 2046221249Stuexen if (asc->cnt == cnt_invalid) 2047221249Stuexen return (1); 2048221249Stuexen } 2049221249Stuexen break; 2050163953Srrs } 2051221249Stuexen#endif 2052221249Stuexen default: 2053167598Srrs /* invalid address family */ 2054167598Srrs cnt_invalid++; 2055167598Srrs if (asc->cnt == cnt_invalid) 2056167598Srrs return (1); 2057163953Srrs } 2058163953Srrs } 2059167598Srrs return (0); 2060163953Srrs} 2061163953Srrs 2062171572Srrsstatic int 2063231038Stuexensctp_asconf_iterator_ep_end(struct sctp_inpcb *inp, void *ptr, uint32_t val SCTP_UNUSED) 2064163953Srrs{ 2065167598Srrs struct sctp_ifa *ifa; 2066167598Srrs struct sctp_asconf_iterator *asc; 2067167598Srrs struct sctp_laddr *laddr, *nladdr, *l; 2068163953Srrs 2069167598Srrs /* Only for specific case not bound all */ 2070167598Srrs asc = (struct sctp_asconf_iterator *)ptr; 2071167598Srrs LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) { 2072167598Srrs ifa = l->ifa; 2073167598Srrs if (l->action == SCTP_ADD_IP_ADDRESS) { 2074169655Srrs LIST_FOREACH(laddr, &inp->sctp_addr_list, 2075169655Srrs sctp_nxt_addr) { 2076167598Srrs if (laddr->ifa == ifa) { 2077167598Srrs laddr->action = 0; 2078167598Srrs break; 2079167598Srrs } 2080167598Srrs } 2081167598Srrs } else if (l->action == SCTP_DEL_IP_ADDRESS) { 2082216822Stuexen LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) { 2083167598Srrs /* remove only after all guys are done */ 2084167598Srrs if (laddr->ifa == ifa) { 2085167598Srrs sctp_del_local_addr_ep(inp, ifa); 2086167598Srrs } 2087167598Srrs } 2088167598Srrs } 2089163953Srrs } 2090167598Srrs return (0); 2091163953Srrs} 2092163953Srrs 2093167598Srrsvoid 2094171572Srrssctp_asconf_iterator_stcb(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 2095231038Stuexen void *ptr, uint32_t val SCTP_UNUSED) 2096163953Srrs{ 2097167598Srrs struct sctp_asconf_iterator *asc; 2098167598Srrs struct sctp_ifa *ifa; 2099167598Srrs struct sctp_laddr *l; 2100167598Srrs int cnt_invalid = 0; 2101167598Srrs int type, status; 2102171572Srrs int num_queued = 0; 2103163953Srrs 2104167598Srrs asc = (struct sctp_asconf_iterator *)ptr; 2105167598Srrs LIST_FOREACH(l, &asc->list_of_work, sctp_nxt_addr) { 2106167598Srrs ifa = l->ifa; 2107167598Srrs type = l->action; 2108170751Srrs 2109170751Srrs /* address's vrf_id must be the vrf_id of the assoc */ 2110170751Srrs if (ifa->vrf_id != stcb->asoc.vrf_id) { 2111170751Srrs continue; 2112170751Srrs } 2113167598Srrs /* Same checks again for assoc */ 2114178251Srrs switch (ifa->address.sa.sa_family) { 2115178251Srrs#ifdef INET6 2116178251Srrs case AF_INET6: 2117178251Srrs { 2118178251Srrs /* invalid if we're not a v6 endpoint */ 2119178251Srrs struct sockaddr_in6 *sin6; 2120163953Srrs 2121178251Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 2122178251Srrs cnt_invalid++; 2123178251Srrs if (asc->cnt == cnt_invalid) 2124178251Srrs return; 2125178251Srrs else 2126178251Srrs continue; 2127167598Srrs } 2128178251Srrs sin6 = (struct sockaddr_in6 *)&ifa->address.sin6; 2129178251Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 2130178251Srrs /* we skip unspecifed addresses */ 2131167598Srrs continue; 2132167598Srrs } 2133267799Stuexen if (prison_check_ip6(inp->ip_inp.inp.inp_cred, 2134267799Stuexen &sin6->sin6_addr) != 0) { 2135267799Stuexen continue; 2136267799Stuexen } 2137178251Srrs if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { 2138252961Stuexen if (stcb->asoc.scope.local_scope == 0) { 2139178251Srrs continue; 2140178251Srrs } 2141178251Srrs /* is it the right link local scope? */ 2142178251Srrs if (sctp_is_scopeid_in_nets(stcb, &ifa->address.sa) == 0) { 2143178251Srrs continue; 2144178251Srrs } 2145178251Srrs } 2146178251Srrs break; 2147167598Srrs } 2148178251Srrs#endif 2149221249Stuexen#ifdef INET 2150178251Srrs case AF_INET: 2151178251Srrs { 2152178251Srrs /* invalid if we are a v6 only endpoint */ 2153178251Srrs struct in6pcb *inp6; 2154178251Srrs struct sockaddr_in *sin; 2155163953Srrs 2156178251Srrs inp6 = (struct in6pcb *)&inp->ip_inp.inp; 2157178251Srrs /* invalid if we are a v6 only endpoint */ 2158178251Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 2159178251Srrs SCTP_IPV6_V6ONLY(inp6)) 2160178251Srrs continue; 2161167598Srrs 2162178251Srrs sin = (struct sockaddr_in *)&ifa->address.sa; 2163178251Srrs if (sin->sin_addr.s_addr == 0) { 2164178251Srrs /* we skip unspecifed addresses */ 2165167598Srrs continue; 2166178251Srrs } 2167267799Stuexen if (prison_check_ip4(inp->ip_inp.inp.inp_cred, 2168267799Stuexen &sin->sin_addr) != 0) { 2169267799Stuexen continue; 2170267799Stuexen } 2171252961Stuexen if (stcb->asoc.scope.ipv4_local_scope == 0 && 2172178251Srrs IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) { 2173201758Smbr continue; 2174178251Srrs } 2175178251Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 2176178251Srrs SCTP_IPV6_V6ONLY(inp6)) { 2177178251Srrs cnt_invalid++; 2178178251Srrs if (asc->cnt == cnt_invalid) 2179178251Srrs return; 2180178251Srrs else 2181178251Srrs continue; 2182178251Srrs } 2183178251Srrs break; 2184167598Srrs } 2185221249Stuexen#endif 2186178251Srrs default: 2187167598Srrs /* invalid address family */ 2188167598Srrs cnt_invalid++; 2189167598Srrs if (asc->cnt == cnt_invalid) 2190163953Srrs return; 2191167598Srrs else 2192167598Srrs continue; 2193178251Srrs break; 2194163953Srrs } 2195163953Srrs 2196167598Srrs if (type == SCTP_ADD_IP_ADDRESS) { 2197171572Srrs /* prevent this address from being used as a source */ 2198171572Srrs sctp_add_local_addr_restricted(stcb, ifa); 2199167598Srrs } else if (type == SCTP_DEL_IP_ADDRESS) { 2200163953Srrs struct sctp_nets *net; 2201163953Srrs 2202163953Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 2203169352Srrs sctp_rtentry_t *rt; 2204163953Srrs 2205163953Srrs /* delete this address if cached */ 2206172091Srrs if (net->ro._s_addr == ifa) { 2207167598Srrs sctp_free_ifa(net->ro._s_addr); 2208167598Srrs net->ro._s_addr = NULL; 2209167598Srrs net->src_addr_selected = 0; 2210167598Srrs rt = net->ro.ro_rt; 2211167598Srrs if (rt) { 2212167598Srrs RTFREE(rt); 2213167598Srrs net->ro.ro_rt = NULL; 2214167598Srrs } 2215167598Srrs /* 2216167598Srrs * Now we deleted our src address, 2217167598Srrs * should we not also now reset the 2218167598Srrs * cwnd/rto to start as if its a new 2219167598Srrs * address? 2220167598Srrs */ 2221171440Srrs stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net); 2222170428Srrs net->RTO = 0; 2223167598Srrs 2224163953Srrs } 2225167598Srrs } 2226167598Srrs } else if (type == SCTP_SET_PRIM_ADDR) { 2227167598Srrs if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) { 2228171572Srrs /* must validate the ifa is in the ep */ 2229167598Srrs if (sctp_is_addr_in_ep(stcb->sctp_ep, ifa) == 0) { 2230167598Srrs continue; 2231163953Srrs } 2232167598Srrs } else { 2233167598Srrs /* Need to check scopes for this guy */ 2234252961Stuexen if (sctp_is_address_in_scope(ifa, &stcb->asoc.scope, 0) == 0) { 2235167598Srrs continue; 2236167598Srrs } 2237163953Srrs } 2238163953Srrs } 2239167598Srrs /* queue an asconf for this address add/delete */ 2240171572Srrs if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF) && 2241171572Srrs stcb->asoc.peer_supports_asconf) { 2242171572Srrs /* queue an asconf for this addr */ 2243171572Srrs status = sctp_asconf_queue_add(stcb, ifa, type); 2244171572Srrs /* 2245171572Srrs * if queued ok, and in the open state, update the 2246171572Srrs * count of queued params. If in the non-open 2247171572Srrs * state, these get sent when the assoc goes open. 2248171572Srrs */ 2249171572Srrs if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) { 2250171572Srrs if (status >= 0) { 2251171572Srrs num_queued++; 2252167598Srrs } 2253167598Srrs } 2254167598Srrs } 2255163953Srrs } 2256171572Srrs /* 2257171572Srrs * If we have queued params in the open state, send out an ASCONF. 2258171572Srrs */ 2259171572Srrs if (num_queued > 0) { 2260224641Stuexen sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED); 2261171572Srrs } 2262163953Srrs} 2263163953Srrs 2264171572Srrsvoid 2265231038Stuexensctp_asconf_iterator_end(void *ptr, uint32_t val SCTP_UNUSED) 2266167598Srrs{ 2267167598Srrs struct sctp_asconf_iterator *asc; 2268167598Srrs struct sctp_ifa *ifa; 2269216822Stuexen struct sctp_laddr *l, *nl; 2270167598Srrs 2271167598Srrs asc = (struct sctp_asconf_iterator *)ptr; 2272216822Stuexen LIST_FOREACH_SAFE(l, &asc->list_of_work, sctp_nxt_addr, nl) { 2273167598Srrs ifa = l->ifa; 2274167598Srrs if (l->action == SCTP_ADD_IP_ADDRESS) { 2275167598Srrs /* Clear the defer use flag */ 2276167598Srrs ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE; 2277167598Srrs } 2278167598Srrs sctp_free_ifa(ifa); 2279179783Srrs SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), l); 2280167598Srrs SCTP_DECR_LADDR_COUNT(); 2281167598Srrs } 2282170091Srrs SCTP_FREE(asc, SCTP_M_ASC_IT); 2283167598Srrs} 2284167598Srrs 2285163953Srrs/* 2286171572Srrs * sa is the sockaddr to ask the peer to set primary to. 2287171572Srrs * returns: 0 = completed, -1 = error 2288163953Srrs */ 2289171943Srrsint32_t 2290163953Srrssctp_set_primary_ip_address_sa(struct sctp_tcb *stcb, struct sockaddr *sa) 2291163953Srrs{ 2292172190Srrs uint32_t vrf_id; 2293172190Srrs struct sctp_ifa *ifa; 2294163953Srrs 2295172190Srrs /* find the ifa for the desired set primary */ 2296172218Srrs vrf_id = stcb->asoc.vrf_id; 2297172190Srrs ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED); 2298172190Srrs if (ifa == NULL) { 2299172190Srrs /* Invalid address */ 2300172190Srrs return (-1); 2301172190Srrs } 2302163953Srrs /* queue an ASCONF:SET_PRIM_ADDR to be sent */ 2303172190Srrs if (!sctp_asconf_queue_add(stcb, ifa, SCTP_SET_PRIM_ADDR)) { 2304163953Srrs /* set primary queuing succeeded */ 2305171572Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 2306171572Srrs "set_primary_ip_address_sa: queued on tcb=%p, ", 2307252927Stuexen (void *)stcb); 2308171572Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa); 2309163953Srrs if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) { 2310171572Srrs#ifdef SCTP_TIMER_BASED_ASCONF 2311163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, 2312163953Srrs stcb->sctp_ep, stcb, 2313163953Srrs stcb->asoc.primary_destination); 2314171572Srrs#else 2315224641Stuexen sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED); 2316171572Srrs#endif 2317163953Srrs } 2318163953Srrs } else { 2319169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "set_primary_ip_address_sa: failed to add to queue on tcb=%p, ", 2320252927Stuexen (void *)stcb); 2321169420Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, sa); 2322163953Srrs return (-1); 2323163953Srrs } 2324163953Srrs return (0); 2325163953Srrs} 2326163953Srrs 2327163953Srrsvoid 2328167598Srrssctp_set_primary_ip_address(struct sctp_ifa *ifa) 2329163953Srrs{ 2330163953Srrs struct sctp_inpcb *inp; 2331163953Srrs 2332163953Srrs /* go through all our PCB's */ 2333179783Srrs LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) { 2334163953Srrs struct sctp_tcb *stcb; 2335163953Srrs 2336163953Srrs /* process for all associations for this endpoint */ 2337163953Srrs LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { 2338163953Srrs /* queue an ASCONF:SET_PRIM_ADDR to be sent */ 2339163953Srrs if (!sctp_asconf_queue_add(stcb, ifa, 2340163953Srrs SCTP_SET_PRIM_ADDR)) { 2341163953Srrs /* set primary queuing succeeded */ 2342172090Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "set_primary_ip_address: queued on stcb=%p, ", 2343252927Stuexen (void *)stcb); 2344171572Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF1, &ifa->address.sa); 2345171572Srrs if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) { 2346171572Srrs#ifdef SCTP_TIMER_BASED_ASCONF 2347163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, 2348163953Srrs stcb->sctp_ep, stcb, 2349163953Srrs stcb->asoc.primary_destination); 2350171572Srrs#else 2351224641Stuexen sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED); 2352171572Srrs#endif 2353163953Srrs } 2354163953Srrs } 2355163953Srrs } /* for each stcb */ 2356163953Srrs } /* for each inp */ 2357163953Srrs} 2358163953Srrs 2359179157Srrsint 2360179157Srrssctp_is_addr_pending(struct sctp_tcb *stcb, struct sctp_ifa *sctp_ifa) 2361179157Srrs{ 2362179157Srrs struct sctp_tmit_chunk *chk, *nchk; 2363179157Srrs unsigned int offset, asconf_limit; 2364179157Srrs struct sctp_asconf_chunk *acp; 2365179157Srrs struct sctp_asconf_paramhdr *aph; 2366179157Srrs uint8_t aparam_buf[SCTP_PARAM_BUFFER_SIZE]; 2367221249Stuexen struct sctp_paramhdr *ph; 2368179157Srrs int add_cnt, del_cnt; 2369179157Srrs uint16_t last_param_type; 2370179157Srrs 2371179157Srrs add_cnt = del_cnt = 0; 2372179157Srrs last_param_type = 0; 2373216822Stuexen TAILQ_FOREACH_SAFE(chk, &stcb->asoc.asconf_send_queue, sctp_next, nchk) { 2374179157Srrs if (chk->data == NULL) { 2375179157Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: No mbuf data?\n"); 2376179157Srrs continue; 2377179157Srrs } 2378179157Srrs offset = 0; 2379179157Srrs acp = mtod(chk->data, struct sctp_asconf_chunk *); 2380179157Srrs offset += sizeof(struct sctp_asconf_chunk); 2381179157Srrs asconf_limit = ntohs(acp->ch.chunk_length); 2382221249Stuexen ph = (struct sctp_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_paramhdr), aparam_buf); 2383221249Stuexen if (ph == NULL) { 2384179157Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: couldn't get lookup addr!\n"); 2385179157Srrs continue; 2386179157Srrs } 2387221249Stuexen offset += ntohs(ph->param_length); 2388179157Srrs 2389179157Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_asconf_paramhdr), aparam_buf); 2390179157Srrs if (aph == NULL) { 2391179157Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: Empty ASCONF will be sent?\n"); 2392179157Srrs continue; 2393179157Srrs } 2394179157Srrs while (aph != NULL) { 2395179157Srrs unsigned int param_length, param_type; 2396179157Srrs 2397179157Srrs param_type = ntohs(aph->ph.param_type); 2398179157Srrs param_length = ntohs(aph->ph.param_length); 2399179157Srrs if (offset + param_length > asconf_limit) { 2400179157Srrs /* parameter goes beyond end of chunk! */ 2401179157Srrs break; 2402179157Srrs } 2403179157Srrs if (param_length > sizeof(aparam_buf)) { 2404179157Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: param length (%u) larger than buffer size!\n", param_length); 2405179157Srrs break; 2406179157Srrs } 2407179157Srrs if (param_length <= sizeof(struct sctp_paramhdr)) { 2408179157Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: param length(%u) too short\n", param_length); 2409179157Srrs break; 2410179157Srrs } 2411179157Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, param_length, aparam_buf); 2412179157Srrs if (aph == NULL) { 2413179157Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "is_addr_pending: couldn't get entire param\n"); 2414179157Srrs break; 2415179157Srrs } 2416221249Stuexen ph = (struct sctp_paramhdr *)(aph + 1); 2417221249Stuexen if (sctp_addr_match(ph, &sctp_ifa->address.sa) != 0) { 2418179157Srrs switch (param_type) { 2419179157Srrs case SCTP_ADD_IP_ADDRESS: 2420179157Srrs add_cnt++; 2421179157Srrs break; 2422179157Srrs case SCTP_DEL_IP_ADDRESS: 2423179157Srrs del_cnt++; 2424179157Srrs break; 2425179157Srrs default: 2426179157Srrs break; 2427179157Srrs } 2428179157Srrs last_param_type = param_type; 2429179157Srrs } 2430179157Srrs offset += SCTP_SIZE32(param_length); 2431179157Srrs if (offset >= asconf_limit) { 2432179157Srrs /* no more data in the mbuf chain */ 2433179157Srrs break; 2434179157Srrs } 2435179157Srrs /* get pointer to next asconf param */ 2436179157Srrs aph = (struct sctp_asconf_paramhdr *)sctp_m_getptr(chk->data, offset, sizeof(struct sctp_asconf_paramhdr), aparam_buf); 2437179157Srrs } 2438179157Srrs } 2439179157Srrs 2440179157Srrs /* 2441179157Srrs * we want to find the sequences which consist of ADD -> DEL -> ADD 2442179157Srrs * or DEL -> ADD 2443179157Srrs */ 2444179157Srrs if (add_cnt > del_cnt || 2445179157Srrs (add_cnt == del_cnt && last_param_type == SCTP_ADD_IP_ADDRESS)) { 2446231039Stuexen return (1); 2447179157Srrs } 2448231039Stuexen return (0); 2449179157Srrs} 2450179157Srrs 2451163953Srrsstatic struct sockaddr * 2452172190Srrssctp_find_valid_localaddr(struct sctp_tcb *stcb, int addr_locked) 2453163953Srrs{ 2454167598Srrs struct sctp_vrf *vrf = NULL; 2455167598Srrs struct sctp_ifn *sctp_ifn; 2456167598Srrs struct sctp_ifa *sctp_ifa; 2457163953Srrs 2458172190Srrs if (addr_locked == SCTP_ADDR_NOT_LOCKED) 2459172218Srrs SCTP_IPI_ADDR_RLOCK(); 2460167598Srrs vrf = sctp_find_vrf(stcb->asoc.vrf_id); 2461169420Srrs if (vrf == NULL) { 2462172190Srrs if (addr_locked == SCTP_ADDR_NOT_LOCKED) 2463172218Srrs SCTP_IPI_ADDR_RUNLOCK(); 2464169420Srrs return (NULL); 2465169420Srrs } 2466167598Srrs LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { 2467252961Stuexen if (stcb->asoc.scope.loopback_scope == 0 && 2468167598Srrs SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { 2469163953Srrs /* Skip if loopback_scope not set */ 2470163953Srrs continue; 2471163953Srrs } 2472167598Srrs LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { 2473221249Stuexen switch (sctp_ifa->address.sa.sa_family) { 2474221249Stuexen#ifdef INET 2475221249Stuexen case AF_INET: 2476252961Stuexen if (stcb->asoc.scope.ipv4_addr_legal) { 2477221249Stuexen struct sockaddr_in *sin; 2478163953Srrs 2479221249Stuexen sin = (struct sockaddr_in *)&sctp_ifa->address.sa; 2480221249Stuexen if (sin->sin_addr.s_addr == 0) { 2481221249Stuexen /* skip unspecifed addresses */ 2482221249Stuexen continue; 2483221249Stuexen } 2484267799Stuexen if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred, 2485267799Stuexen &sin->sin_addr) != 0) { 2486267799Stuexen continue; 2487267799Stuexen } 2488252961Stuexen if (stcb->asoc.scope.ipv4_local_scope == 0 && 2489221249Stuexen IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) 2490221249Stuexen continue; 2491221249Stuexen 2492221249Stuexen if (sctp_is_addr_restricted(stcb, sctp_ifa) && 2493221249Stuexen (!sctp_is_addr_pending(stcb, sctp_ifa))) 2494221249Stuexen continue; 2495221249Stuexen /* 2496221249Stuexen * found a valid local v4 address to 2497221249Stuexen * use 2498221249Stuexen */ 2499221249Stuexen if (addr_locked == SCTP_ADDR_NOT_LOCKED) 2500221249Stuexen SCTP_IPI_ADDR_RUNLOCK(); 2501221249Stuexen return (&sctp_ifa->address.sa); 2502163953Srrs } 2503221249Stuexen break; 2504221249Stuexen#endif 2505221249Stuexen#ifdef INET6 2506221249Stuexen case AF_INET6: 2507252961Stuexen if (stcb->asoc.scope.ipv6_addr_legal) { 2508221249Stuexen struct sockaddr_in6 *sin6; 2509163953Srrs 2510221249Stuexen if (sctp_ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { 2511221249Stuexen continue; 2512221249Stuexen } 2513221249Stuexen sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa; 2514221249Stuexen if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 2515221249Stuexen /* 2516221249Stuexen * we skip unspecifed 2517221249Stuexen * addresses 2518221249Stuexen */ 2519221249Stuexen continue; 2520221249Stuexen } 2521267799Stuexen if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred, 2522267799Stuexen &sin6->sin6_addr) != 0) { 2523267799Stuexen continue; 2524267799Stuexen } 2525252961Stuexen if (stcb->asoc.scope.local_scope == 0 && 2526221249Stuexen IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) 2527221249Stuexen continue; 2528252961Stuexen if (stcb->asoc.scope.site_scope == 0 && 2529221249Stuexen IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) 2530221249Stuexen continue; 2531163953Srrs 2532221249Stuexen if (sctp_is_addr_restricted(stcb, sctp_ifa) && 2533221249Stuexen (!sctp_is_addr_pending(stcb, sctp_ifa))) 2534221249Stuexen continue; 2535221249Stuexen /* 2536221249Stuexen * found a valid local v6 address to 2537221249Stuexen * use 2538221249Stuexen */ 2539221249Stuexen if (addr_locked == SCTP_ADDR_NOT_LOCKED) 2540221249Stuexen SCTP_IPI_ADDR_RUNLOCK(); 2541221249Stuexen return (&sctp_ifa->address.sa); 2542167598Srrs } 2543221249Stuexen break; 2544221249Stuexen#endif 2545221249Stuexen default: 2546221249Stuexen break; 2547163953Srrs } 2548163953Srrs } 2549163953Srrs } 2550163953Srrs /* no valid addresses found */ 2551172190Srrs if (addr_locked == SCTP_ADDR_NOT_LOCKED) 2552172218Srrs SCTP_IPI_ADDR_RUNLOCK(); 2553163953Srrs return (NULL); 2554163953Srrs} 2555163953Srrs 2556163953Srrsstatic struct sockaddr * 2557163953Srrssctp_find_valid_localaddr_ep(struct sctp_tcb *stcb) 2558163953Srrs{ 2559163953Srrs struct sctp_laddr *laddr; 2560163953Srrs 2561163953Srrs LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) { 2562163953Srrs if (laddr->ifa == NULL) { 2563163953Srrs continue; 2564163953Srrs } 2565163953Srrs /* is the address restricted ? */ 2566179157Srrs if (sctp_is_addr_restricted(stcb, laddr->ifa) && 2567179157Srrs (!sctp_is_addr_pending(stcb, laddr->ifa))) 2568163953Srrs continue; 2569163953Srrs 2570163953Srrs /* found a valid local address to use */ 2571167598Srrs return (&laddr->ifa->address.sa); 2572163953Srrs } 2573163953Srrs /* no valid addresses found */ 2574163953Srrs return (NULL); 2575163953Srrs} 2576163953Srrs 2577163953Srrs/* 2578171477Srrs * builds an ASCONF chunk from queued ASCONF params. 2579171477Srrs * returns NULL on error (no mbuf, no ASCONF params queued, etc). 2580163953Srrs */ 2581163953Srrsstruct mbuf * 2582172190Srrssctp_compose_asconf(struct sctp_tcb *stcb, int *retlen, int addr_locked) 2583163953Srrs{ 2584163953Srrs struct mbuf *m_asconf, *m_asconf_chk; 2585163953Srrs struct sctp_asconf_addr *aa; 2586163953Srrs struct sctp_asconf_chunk *acp; 2587163953Srrs struct sctp_asconf_paramhdr *aph; 2588163953Srrs struct sctp_asconf_addr_param *aap; 2589163953Srrs uint32_t p_length; 2590163953Srrs uint32_t correlation_id = 1; /* 0 is reserved... */ 2591163953Srrs caddr_t ptr, lookup_ptr; 2592163953Srrs uint8_t lookup_used = 0; 2593163953Srrs 2594163953Srrs /* are there any asconf params to send? */ 2595179157Srrs TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) { 2596179157Srrs if (aa->sent == 0) 2597179157Srrs break; 2598163953Srrs } 2599179157Srrs if (aa == NULL) 2600171572Srrs return (NULL); 2601179157Srrs 2602163953Srrs /* 2603163953Srrs * get a chunk header mbuf and a cluster for the asconf params since 2604163953Srrs * it's simpler to fill in the asconf chunk header lookup address on 2605163953Srrs * the fly 2606163953Srrs */ 2607165647Srrs m_asconf_chk = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_chunk), 0, M_DONTWAIT, 1, MT_DATA); 2608163953Srrs if (m_asconf_chk == NULL) { 2609163953Srrs /* no mbuf's */ 2610169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 2611169420Srrs "compose_asconf: couldn't get chunk mbuf!\n"); 2612163953Srrs return (NULL); 2613163953Srrs } 2614165647Srrs m_asconf = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA); 2615163953Srrs if (m_asconf == NULL) { 2616163953Srrs /* no mbuf's */ 2617169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 2618169420Srrs "compose_asconf: couldn't get mbuf!\n"); 2619163953Srrs sctp_m_freem(m_asconf_chk); 2620163953Srrs return (NULL); 2621163953Srrs } 2622165647Srrs SCTP_BUF_LEN(m_asconf_chk) = sizeof(struct sctp_asconf_chunk); 2623165647Srrs SCTP_BUF_LEN(m_asconf) = 0; 2624163953Srrs acp = mtod(m_asconf_chk, struct sctp_asconf_chunk *); 2625163953Srrs bzero(acp, sizeof(struct sctp_asconf_chunk)); 2626163953Srrs /* save pointers to lookup address and asconf params */ 2627163953Srrs lookup_ptr = (caddr_t)(acp + 1); /* after the header */ 2628163953Srrs ptr = mtod(m_asconf, caddr_t); /* beginning of cluster */ 2629163953Srrs 2630163953Srrs /* fill in chunk header info */ 2631163953Srrs acp->ch.chunk_type = SCTP_ASCONF; 2632163953Srrs acp->ch.chunk_flags = 0; 2633163953Srrs acp->serial_number = htonl(stcb->asoc.asconf_seq_out); 2634179157Srrs stcb->asoc.asconf_seq_out++; 2635163953Srrs 2636163953Srrs /* add parameters... up to smallest MTU allowed */ 2637163953Srrs TAILQ_FOREACH(aa, &stcb->asoc.asconf_queue, next) { 2638179157Srrs if (aa->sent) 2639179157Srrs continue; 2640163953Srrs /* get the parameter length */ 2641163953Srrs p_length = SCTP_SIZE32(aa->ap.aph.ph.param_length); 2642163953Srrs /* will it fit in current chunk? */ 2643266057Stuexen if ((SCTP_BUF_LEN(m_asconf) + p_length > stcb->asoc.smallest_mtu) || 2644266057Stuexen (SCTP_BUF_LEN(m_asconf) + p_length > MCLBYTES)) { 2645163953Srrs /* won't fit, so we're done with this chunk */ 2646163953Srrs break; 2647163953Srrs } 2648163953Srrs /* assign (and store) a correlation id */ 2649163953Srrs aa->ap.aph.correlation_id = correlation_id++; 2650163953Srrs 2651163953Srrs /* 2652163953Srrs * fill in address if we're doing a delete this is a simple 2653163953Srrs * way for us to fill in the correlation address, which 2654163953Srrs * should only be used by the peer if we're deleting our 2655163953Srrs * source address and adding a new address (e.g. renumbering 2656163953Srrs * case) 2657163953Srrs */ 2658163953Srrs if (lookup_used == 0 && 2659185694Srrs (aa->special_del == 0) && 2660163953Srrs aa->ap.aph.ph.param_type == SCTP_DEL_IP_ADDRESS) { 2661163953Srrs struct sctp_ipv6addr_param *lookup; 2662163953Srrs uint16_t p_size, addr_size; 2663163953Srrs 2664163953Srrs lookup = (struct sctp_ipv6addr_param *)lookup_ptr; 2665163953Srrs lookup->ph.param_type = 2666163953Srrs htons(aa->ap.addrp.ph.param_type); 2667163953Srrs if (aa->ap.addrp.ph.param_type == SCTP_IPV6_ADDRESS) { 2668163953Srrs /* copy IPv6 address */ 2669163953Srrs p_size = sizeof(struct sctp_ipv6addr_param); 2670163953Srrs addr_size = sizeof(struct in6_addr); 2671163953Srrs } else { 2672163953Srrs /* copy IPv4 address */ 2673163953Srrs p_size = sizeof(struct sctp_ipv4addr_param); 2674163953Srrs addr_size = sizeof(struct in_addr); 2675163953Srrs } 2676163953Srrs lookup->ph.param_length = htons(SCTP_SIZE32(p_size)); 2677163953Srrs memcpy(lookup->addr, &aa->ap.addrp.addr, addr_size); 2678165647Srrs SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size); 2679163953Srrs lookup_used = 1; 2680163953Srrs } 2681163953Srrs /* copy into current space */ 2682163953Srrs memcpy(ptr, &aa->ap, p_length); 2683163953Srrs 2684163953Srrs /* network elements and update lengths */ 2685163953Srrs aph = (struct sctp_asconf_paramhdr *)ptr; 2686163953Srrs aap = (struct sctp_asconf_addr_param *)ptr; 2687163953Srrs /* correlation_id is transparent to peer, no htonl needed */ 2688163953Srrs aph->ph.param_type = htons(aph->ph.param_type); 2689163953Srrs aph->ph.param_length = htons(aph->ph.param_length); 2690163953Srrs aap->addrp.ph.param_type = htons(aap->addrp.ph.param_type); 2691163953Srrs aap->addrp.ph.param_length = htons(aap->addrp.ph.param_length); 2692163953Srrs 2693165647Srrs SCTP_BUF_LEN(m_asconf) += SCTP_SIZE32(p_length); 2694163953Srrs ptr += SCTP_SIZE32(p_length); 2695163953Srrs 2696163953Srrs /* 2697163953Srrs * these params are removed off the pending list upon 2698163953Srrs * getting an ASCONF-ACK back from the peer, just set flag 2699163953Srrs */ 2700163953Srrs aa->sent = 1; 2701163953Srrs } 2702163953Srrs /* check to see if the lookup addr has been populated yet */ 2703163953Srrs if (lookup_used == 0) { 2704163953Srrs /* NOTE: if the address param is optional, can skip this... */ 2705163953Srrs /* add any valid (existing) address... */ 2706163953Srrs struct sctp_ipv6addr_param *lookup; 2707163953Srrs uint16_t p_size, addr_size; 2708163953Srrs struct sockaddr *found_addr; 2709163953Srrs caddr_t addr_ptr; 2710163953Srrs 2711163953Srrs if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) 2712172190Srrs found_addr = sctp_find_valid_localaddr(stcb, 2713172190Srrs addr_locked); 2714163953Srrs else 2715163953Srrs found_addr = sctp_find_valid_localaddr_ep(stcb); 2716163953Srrs 2717163953Srrs lookup = (struct sctp_ipv6addr_param *)lookup_ptr; 2718163953Srrs if (found_addr != NULL) { 2719221249Stuexen switch (found_addr->sa_family) { 2720221249Stuexen#ifdef INET6 2721221249Stuexen case AF_INET6: 2722163953Srrs /* copy IPv6 address */ 2723163953Srrs lookup->ph.param_type = 2724163953Srrs htons(SCTP_IPV6_ADDRESS); 2725163953Srrs p_size = sizeof(struct sctp_ipv6addr_param); 2726163953Srrs addr_size = sizeof(struct in6_addr); 2727163953Srrs addr_ptr = (caddr_t)&((struct sockaddr_in6 *) 2728163953Srrs found_addr)->sin6_addr; 2729221249Stuexen break; 2730221249Stuexen#endif 2731221249Stuexen#ifdef INET 2732221249Stuexen case AF_INET: 2733163953Srrs /* copy IPv4 address */ 2734163953Srrs lookup->ph.param_type = 2735163953Srrs htons(SCTP_IPV4_ADDRESS); 2736163953Srrs p_size = sizeof(struct sctp_ipv4addr_param); 2737163953Srrs addr_size = sizeof(struct in_addr); 2738163953Srrs addr_ptr = (caddr_t)&((struct sockaddr_in *) 2739163953Srrs found_addr)->sin_addr; 2740221249Stuexen break; 2741221249Stuexen#endif 2742221249Stuexen default: 2743221249Stuexen p_size = 0; 2744221249Stuexen addr_size = 0; 2745221249Stuexen addr_ptr = NULL; 2746221249Stuexen break; 2747163953Srrs } 2748163953Srrs lookup->ph.param_length = htons(SCTP_SIZE32(p_size)); 2749163953Srrs memcpy(lookup->addr, addr_ptr, addr_size); 2750165647Srrs SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(p_size); 2751163953Srrs } else { 2752163953Srrs /* uh oh... don't have any address?? */ 2753169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 2754169420Srrs "compose_asconf: no lookup addr!\n"); 2755221249Stuexen /* XXX for now, we send a IPv4 address of 0.0.0.0 */ 2756163953Srrs lookup->ph.param_type = htons(SCTP_IPV4_ADDRESS); 2757163953Srrs lookup->ph.param_length = htons(SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param))); 2758163953Srrs bzero(lookup->addr, sizeof(struct in_addr)); 2759165647Srrs SCTP_BUF_LEN(m_asconf_chk) += SCTP_SIZE32(sizeof(struct sctp_ipv4addr_param)); 2760163953Srrs } 2761163953Srrs } 2762163953Srrs /* chain it all together */ 2763165647Srrs SCTP_BUF_NEXT(m_asconf_chk) = m_asconf; 2764169655Srrs *retlen = SCTP_BUF_LEN(m_asconf_chk) + SCTP_BUF_LEN(m_asconf); 2765266056Stuexen acp->ch.chunk_length = htons(*retlen); 2766163953Srrs 2767163953Srrs return (m_asconf_chk); 2768163953Srrs} 2769163953Srrs 2770163953Srrs/* 2771163953Srrs * section to handle address changes before an association is up eg. changes 2772163953Srrs * during INIT/INIT-ACK/COOKIE-ECHO handshake 2773163953Srrs */ 2774163953Srrs 2775163953Srrs/* 2776163953Srrs * processes the (local) addresses in the INIT-ACK chunk 2777163953Srrs */ 2778163953Srrsstatic void 2779163953Srrssctp_process_initack_addresses(struct sctp_tcb *stcb, struct mbuf *m, 2780163953Srrs unsigned int offset, unsigned int length) 2781163953Srrs{ 2782163953Srrs struct sctp_paramhdr tmp_param, *ph; 2783163953Srrs uint16_t plen, ptype; 2784167598Srrs struct sctp_ifa *sctp_ifa; 2785221249Stuexen 2786221249Stuexen#ifdef INET6 2787238613Stuexen struct sctp_ipv6addr_param addr6_store; 2788163953Srrs struct sockaddr_in6 sin6; 2789221249Stuexen 2790221249Stuexen#endif 2791221249Stuexen#ifdef INET 2792238613Stuexen struct sctp_ipv4addr_param addr4_store; 2793163953Srrs struct sockaddr_in sin; 2794221249Stuexen 2795221249Stuexen#endif 2796163953Srrs struct sockaddr *sa; 2797167598Srrs uint32_t vrf_id; 2798163953Srrs 2799169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF2, "processing init-ack addresses\n"); 2800169420Srrs if (stcb == NULL) /* Un-needed check for SA */ 2801169420Srrs return; 2802163953Srrs 2803163953Srrs /* convert to upper bound */ 2804163953Srrs length += offset; 2805163953Srrs 2806163953Srrs if ((offset + sizeof(struct sctp_paramhdr)) > length) { 2807163953Srrs return; 2808163953Srrs } 2809163953Srrs /* init the addresses */ 2810221249Stuexen#ifdef INET6 2811163953Srrs bzero(&sin6, sizeof(sin6)); 2812163953Srrs sin6.sin6_family = AF_INET6; 2813163953Srrs sin6.sin6_len = sizeof(sin6); 2814163953Srrs sin6.sin6_port = stcb->rport; 2815221249Stuexen#endif 2816163953Srrs 2817221249Stuexen#ifdef INET 2818163953Srrs bzero(&sin, sizeof(sin)); 2819221249Stuexen sin.sin_family = AF_INET; 2820163953Srrs sin.sin_len = sizeof(sin); 2821163953Srrs sin.sin_port = stcb->rport; 2822221249Stuexen#endif 2823163953Srrs 2824163953Srrs /* go through the addresses in the init-ack */ 2825221249Stuexen ph = (struct sctp_paramhdr *) 2826221249Stuexen sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr), 2827221249Stuexen (uint8_t *) & tmp_param); 2828163953Srrs while (ph != NULL) { 2829163953Srrs ptype = ntohs(ph->param_type); 2830163953Srrs plen = ntohs(ph->param_length); 2831221249Stuexen switch (ptype) { 2832221249Stuexen#ifdef INET6 2833221249Stuexen case SCTP_IPV6_ADDRESS: 2834221249Stuexen { 2835221249Stuexen struct sctp_ipv6addr_param *a6p; 2836163953Srrs 2837221249Stuexen /* get the entire IPv6 address param */ 2838221249Stuexen a6p = (struct sctp_ipv6addr_param *) 2839221249Stuexen sctp_m_getptr(m, offset, 2840221249Stuexen sizeof(struct sctp_ipv6addr_param), 2841238613Stuexen (uint8_t *) & addr6_store); 2842221249Stuexen if (plen != sizeof(struct sctp_ipv6addr_param) || 2843221249Stuexen a6p == NULL) { 2844221249Stuexen return; 2845221249Stuexen } 2846221249Stuexen memcpy(&sin6.sin6_addr, a6p->addr, 2847221249Stuexen sizeof(struct in6_addr)); 2848221249Stuexen sa = (struct sockaddr *)&sin6; 2849221249Stuexen break; 2850163953Srrs } 2851221249Stuexen#endif 2852221249Stuexen#ifdef INET 2853221249Stuexen case SCTP_IPV4_ADDRESS: 2854221249Stuexen { 2855221249Stuexen struct sctp_ipv4addr_param *a4p; 2856163953Srrs 2857221249Stuexen /* get the entire IPv4 address param */ 2858221249Stuexen a4p = (struct sctp_ipv4addr_param *)sctp_m_getptr(m, offset, 2859221249Stuexen sizeof(struct sctp_ipv4addr_param), 2860238613Stuexen (uint8_t *) & addr4_store); 2861221249Stuexen if (plen != sizeof(struct sctp_ipv4addr_param) || 2862221249Stuexen a4p == NULL) { 2863221249Stuexen return; 2864221249Stuexen } 2865221249Stuexen sin.sin_addr.s_addr = a4p->addr; 2866221249Stuexen sa = (struct sockaddr *)&sin; 2867221410Stuexen break; 2868163953Srrs } 2869221249Stuexen#endif 2870221249Stuexen default: 2871163953Srrs goto next_addr; 2872163953Srrs } 2873163953Srrs 2874163953Srrs /* see if this address really (still) exists */ 2875168299Srrs if (stcb) { 2876168299Srrs vrf_id = stcb->asoc.vrf_id; 2877168299Srrs } else { 2878168299Srrs vrf_id = SCTP_DEFAULT_VRFID; 2879168299Srrs } 2880172190Srrs sctp_ifa = sctp_find_ifa_by_addr(sa, vrf_id, 2881172190Srrs SCTP_ADDR_NOT_LOCKED); 2882167598Srrs if (sctp_ifa == NULL) { 2883163953Srrs /* address doesn't exist anymore */ 2884163953Srrs int status; 2885163953Srrs 2886163953Srrs /* are ASCONFs allowed ? */ 2887163953Srrs if ((sctp_is_feature_on(stcb->sctp_ep, 2888163953Srrs SCTP_PCB_FLAGS_DO_ASCONF)) && 2889163953Srrs stcb->asoc.peer_supports_asconf) { 2890163953Srrs /* queue an ASCONF DEL_IP_ADDRESS */ 2891172190Srrs status = sctp_asconf_queue_sa_delete(stcb, sa); 2892163953Srrs /* 2893171572Srrs * if queued ok, and in correct state, send 2894171572Srrs * out the ASCONF. 2895163953Srrs */ 2896163953Srrs if (status == 0 && 2897163953Srrs SCTP_GET_STATE(&stcb->asoc) == 2898163953Srrs SCTP_STATE_OPEN) { 2899171572Srrs#ifdef SCTP_TIMER_BASED_ASCONF 2900163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, 2901163953Srrs stcb->sctp_ep, stcb, 2902163953Srrs stcb->asoc.primary_destination); 2903171572Srrs#else 2904224641Stuexen sctp_send_asconf(stcb, NULL, SCTP_ADDR_NOT_LOCKED); 2905171572Srrs#endif 2906163953Srrs } 2907163953Srrs } 2908163953Srrs } 2909163953Srrsnext_addr: 2910163953Srrs /* 2911163953Srrs * Sanity check: Make sure the length isn't 0, otherwise 2912163953Srrs * we'll be stuck in this loop for a long time... 2913163953Srrs */ 2914163953Srrs if (SCTP_SIZE32(plen) == 0) { 2915169420Srrs SCTP_PRINTF("process_initack_addrs: bad len (%d) type=%xh\n", 2916163953Srrs plen, ptype); 2917163953Srrs return; 2918163953Srrs } 2919163953Srrs /* get next parameter */ 2920163953Srrs offset += SCTP_SIZE32(plen); 2921163953Srrs if ((offset + sizeof(struct sctp_paramhdr)) > length) 2922163953Srrs return; 2923163953Srrs ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset, 2924163953Srrs sizeof(struct sctp_paramhdr), (uint8_t *) & tmp_param); 2925163953Srrs } /* while */ 2926163953Srrs} 2927163953Srrs 2928163953Srrs/* FIX ME: need to verify return result for v6 address type if v6 disabled */ 2929163953Srrs/* 2930163953Srrs * checks to see if a specific address is in the initack address list returns 2931163953Srrs * 1 if found, 0 if not 2932163953Srrs */ 2933163953Srrsstatic uint32_t 2934231038Stuexensctp_addr_in_initack(struct mbuf *m, uint32_t offset, uint32_t length, struct sockaddr *sa) 2935163953Srrs{ 2936163953Srrs struct sctp_paramhdr tmp_param, *ph; 2937163953Srrs uint16_t plen, ptype; 2938221249Stuexen 2939221249Stuexen#ifdef INET 2940163953Srrs struct sockaddr_in *sin; 2941163953Srrs struct sctp_ipv4addr_param *a4p; 2942238613Stuexen struct sctp_ipv6addr_param addr4_store; 2943163953Srrs 2944221249Stuexen#endif 2945163953Srrs#ifdef INET6 2946167598Srrs struct sockaddr_in6 *sin6; 2947163953Srrs struct sctp_ipv6addr_param *a6p; 2948238613Stuexen struct sctp_ipv6addr_param addr6_store; 2949167598Srrs struct sockaddr_in6 sin6_tmp; 2950163953Srrs 2951221249Stuexen#endif 2952163953Srrs 2953221249Stuexen switch (sa->sa_family) { 2954221249Stuexen#ifdef INET 2955221249Stuexen case AF_INET: 2956221249Stuexen break; 2957221249Stuexen#endif 2958163953Srrs#ifdef INET6 2959221249Stuexen case AF_INET6: 2960221249Stuexen break; 2961221249Stuexen#endif 2962221249Stuexen default: 2963163953Srrs return (0); 2964221249Stuexen } 2965163953Srrs 2966169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF2, "find_initack_addr: starting search for "); 2967169420Srrs SCTPDBG_ADDR(SCTP_DEBUG_ASCONF2, sa); 2968163953Srrs /* convert to upper bound */ 2969163953Srrs length += offset; 2970163953Srrs 2971163953Srrs if ((offset + sizeof(struct sctp_paramhdr)) > length) { 2972169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 2973169420Srrs "find_initack_addr: invalid offset?\n"); 2974163953Srrs return (0); 2975163953Srrs } 2976163953Srrs /* go through the addresses in the init-ack */ 2977163953Srrs ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset, 2978163953Srrs sizeof(struct sctp_paramhdr), (uint8_t *) & tmp_param); 2979163953Srrs while (ph != NULL) { 2980163953Srrs ptype = ntohs(ph->param_type); 2981163953Srrs plen = ntohs(ph->param_length); 2982221249Stuexen switch (ptype) { 2983163953Srrs#ifdef INET6 2984221249Stuexen case SCTP_IPV6_ADDRESS: 2985221249Stuexen if (sa->sa_family == AF_INET6) { 2986221249Stuexen /* get the entire IPv6 address param */ 2987221249Stuexen if (plen != sizeof(struct sctp_ipv6addr_param)) { 2988221249Stuexen break; 2989221249Stuexen } 2990221249Stuexen /* get the entire IPv6 address param */ 2991221249Stuexen a6p = (struct sctp_ipv6addr_param *) 2992221249Stuexen sctp_m_getptr(m, offset, 2993221249Stuexen sizeof(struct sctp_ipv6addr_param), 2994238613Stuexen (uint8_t *) & addr6_store); 2995221249Stuexen if (a6p == NULL) { 2996221249Stuexen return (0); 2997221249Stuexen } 2998221249Stuexen sin6 = (struct sockaddr_in6 *)sa; 2999221249Stuexen if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) { 3000221249Stuexen /* create a copy and clear scope */ 3001221249Stuexen memcpy(&sin6_tmp, sin6, 3002221249Stuexen sizeof(struct sockaddr_in6)); 3003221249Stuexen sin6 = &sin6_tmp; 3004221249Stuexen in6_clearscope(&sin6->sin6_addr); 3005221249Stuexen } 3006221249Stuexen if (memcmp(&sin6->sin6_addr, a6p->addr, 3007221249Stuexen sizeof(struct in6_addr)) == 0) { 3008221249Stuexen /* found it */ 3009221249Stuexen return (1); 3010221249Stuexen } 3011163953Srrs } 3012221249Stuexen break; 3013163953Srrs#endif /* INET6 */ 3014221249Stuexen#ifdef INET 3015221249Stuexen case SCTP_IPV4_ADDRESS: 3016221249Stuexen if (sa->sa_family == AF_INET) { 3017221249Stuexen if (plen != sizeof(struct sctp_ipv4addr_param)) { 3018221249Stuexen break; 3019221249Stuexen } 3020221249Stuexen /* get the entire IPv4 address param */ 3021221249Stuexen a4p = (struct sctp_ipv4addr_param *) 3022221249Stuexen sctp_m_getptr(m, offset, 3023221249Stuexen sizeof(struct sctp_ipv4addr_param), 3024238613Stuexen (uint8_t *) & addr4_store); 3025221249Stuexen if (a4p == NULL) { 3026221249Stuexen return (0); 3027221249Stuexen } 3028221249Stuexen sin = (struct sockaddr_in *)sa; 3029221249Stuexen if (sin->sin_addr.s_addr == a4p->addr) { 3030221249Stuexen /* found it */ 3031221249Stuexen return (1); 3032221249Stuexen } 3033163953Srrs } 3034221249Stuexen break; 3035221249Stuexen#endif 3036221249Stuexen default: 3037221249Stuexen break; 3038163953Srrs } 3039163953Srrs /* get next parameter */ 3040163953Srrs offset += SCTP_SIZE32(plen); 3041221249Stuexen if (offset + sizeof(struct sctp_paramhdr) > length) { 3042163953Srrs return (0); 3043221249Stuexen } 3044163953Srrs ph = (struct sctp_paramhdr *) 3045163953Srrs sctp_m_getptr(m, offset, sizeof(struct sctp_paramhdr), 3046163953Srrs (uint8_t *) & tmp_param); 3047163953Srrs } /* while */ 3048163953Srrs /* not found! */ 3049163953Srrs return (0); 3050163953Srrs} 3051163953Srrs 3052163953Srrs/* 3053163953Srrs * makes sure that the current endpoint local addr list is consistent with 3054163953Srrs * the new association (eg. subset bound, asconf allowed) adds addresses as 3055163953Srrs * necessary 3056163953Srrs */ 3057163953Srrsstatic void 3058163953Srrssctp_check_address_list_ep(struct sctp_tcb *stcb, struct mbuf *m, int offset, 3059163953Srrs int length, struct sockaddr *init_addr) 3060163953Srrs{ 3061163953Srrs struct sctp_laddr *laddr; 3062163953Srrs 3063163953Srrs /* go through the endpoint list */ 3064163953Srrs LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) { 3065163953Srrs /* be paranoid and validate the laddr */ 3066163953Srrs if (laddr->ifa == NULL) { 3067169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 3068169420Srrs "check_addr_list_ep: laddr->ifa is NULL"); 3069163953Srrs continue; 3070163953Srrs } 3071167598Srrs if (laddr->ifa == NULL) { 3072169420Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "check_addr_list_ep: laddr->ifa->ifa_addr is NULL"); 3073163953Srrs continue; 3074163953Srrs } 3075163953Srrs /* do i have it implicitly? */ 3076167598Srrs if (sctp_cmpaddr(&laddr->ifa->address.sa, init_addr)) { 3077163953Srrs continue; 3078163953Srrs } 3079163953Srrs /* check to see if in the init-ack */ 3080231038Stuexen if (!sctp_addr_in_initack(m, offset, length, &laddr->ifa->address.sa)) { 3081163953Srrs /* try to add it */ 3082163953Srrs sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb, laddr->ifa, 3083172190Srrs SCTP_ADD_IP_ADDRESS, SCTP_ADDR_NOT_LOCKED); 3084163953Srrs } 3085163953Srrs } 3086163953Srrs} 3087163953Srrs 3088163953Srrs/* 3089163953Srrs * makes sure that the current kernel address list is consistent with the new 3090163953Srrs * association (with all addrs bound) adds addresses as necessary 3091163953Srrs */ 3092163953Srrsstatic void 3093163953Srrssctp_check_address_list_all(struct sctp_tcb *stcb, struct mbuf *m, int offset, 3094163953Srrs int length, struct sockaddr *init_addr, 3095163953Srrs uint16_t local_scope, uint16_t site_scope, 3096163953Srrs uint16_t ipv4_scope, uint16_t loopback_scope) 3097163953Srrs{ 3098167598Srrs struct sctp_vrf *vrf = NULL; 3099167598Srrs struct sctp_ifn *sctp_ifn; 3100167598Srrs struct sctp_ifa *sctp_ifa; 3101167598Srrs uint32_t vrf_id; 3102163953Srrs 3103231038Stuexen#ifdef INET 3104231038Stuexen struct sockaddr_in *sin; 3105231038Stuexen 3106231038Stuexen#endif 3107231038Stuexen#ifdef INET6 3108231038Stuexen struct sockaddr_in6 *sin6; 3109231038Stuexen 3110231038Stuexen#endif 3111231038Stuexen 3112168299Srrs if (stcb) { 3113168299Srrs vrf_id = stcb->asoc.vrf_id; 3114168299Srrs } else { 3115169420Srrs return; 3116168299Srrs } 3117172218Srrs SCTP_IPI_ADDR_RLOCK(); 3118167598Srrs vrf = sctp_find_vrf(vrf_id); 3119167598Srrs if (vrf == NULL) { 3120172218Srrs SCTP_IPI_ADDR_RUNLOCK(); 3121167598Srrs return; 3122167598Srrs } 3123163953Srrs /* go through all our known interfaces */ 3124167598Srrs LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { 3125167598Srrs if (loopback_scope == 0 && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { 3126163953Srrs /* skip loopback interface */ 3127163953Srrs continue; 3128163953Srrs } 3129163953Srrs /* go through each interface address */ 3130167598Srrs LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { 3131163953Srrs /* do i have it implicitly? */ 3132167598Srrs if (sctp_cmpaddr(&sctp_ifa->address.sa, init_addr)) { 3133163953Srrs continue; 3134163953Srrs } 3135231038Stuexen switch (sctp_ifa->address.sa.sa_family) { 3136231038Stuexen#ifdef INET 3137231038Stuexen case AF_INET: 3138231038Stuexen sin = (struct sockaddr_in *)&sctp_ifa->address.sin; 3139267799Stuexen if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred, 3140267799Stuexen &sin->sin_addr) != 0) { 3141267799Stuexen continue; 3142267799Stuexen } 3143231038Stuexen if ((ipv4_scope == 0) && 3144231038Stuexen (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) { 3145231038Stuexen /* private address not in scope */ 3146231038Stuexen continue; 3147231038Stuexen } 3148231038Stuexen break; 3149231038Stuexen#endif 3150231038Stuexen#ifdef INET6 3151231038Stuexen case AF_INET6: 3152231038Stuexen sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sin6; 3153267799Stuexen if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred, 3154267799Stuexen &sin6->sin6_addr) != 0) { 3155267799Stuexen continue; 3156267799Stuexen } 3157231038Stuexen if ((local_scope == 0) && 3158231038Stuexen (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))) { 3159231038Stuexen continue; 3160231038Stuexen } 3161231038Stuexen if ((site_scope == 0) && 3162231038Stuexen (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) { 3163231038Stuexen continue; 3164231038Stuexen } 3165231038Stuexen break; 3166231038Stuexen#endif 3167231038Stuexen default: 3168231038Stuexen break; 3169231038Stuexen } 3170163953Srrs /* check to see if in the init-ack */ 3171231038Stuexen if (!sctp_addr_in_initack(m, offset, length, &sctp_ifa->address.sa)) { 3172163953Srrs /* try to add it */ 3173163953Srrs sctp_addr_mgmt_assoc(stcb->sctp_ep, stcb, 3174172190Srrs sctp_ifa, SCTP_ADD_IP_ADDRESS, 3175172190Srrs SCTP_ADDR_LOCKED); 3176163953Srrs } 3177163953Srrs } /* end foreach ifa */ 3178163953Srrs } /* end foreach ifn */ 3179172218Srrs SCTP_IPI_ADDR_RUNLOCK(); 3180163953Srrs} 3181163953Srrs 3182163953Srrs/* 3183163953Srrs * validates an init-ack chunk (from a cookie-echo) with current addresses 3184163953Srrs * adds addresses from the init-ack into our local address list, if needed 3185163953Srrs * queues asconf adds/deletes addresses as needed and makes appropriate list 3186163953Srrs * changes for source address selection m, offset: points to the start of the 3187163953Srrs * address list in an init-ack chunk length: total length of the address 3188163953Srrs * params only init_addr: address where my INIT-ACK was sent from 3189163953Srrs */ 3190163953Srrsvoid 3191163953Srrssctp_check_address_list(struct sctp_tcb *stcb, struct mbuf *m, int offset, 3192163953Srrs int length, struct sockaddr *init_addr, 3193163953Srrs uint16_t local_scope, uint16_t site_scope, 3194163953Srrs uint16_t ipv4_scope, uint16_t loopback_scope) 3195163953Srrs{ 3196163953Srrs /* process the local addresses in the initack */ 3197163953Srrs sctp_process_initack_addresses(stcb, m, offset, length); 3198163953Srrs 3199163953Srrs if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 3200163953Srrs /* bound all case */ 3201163953Srrs sctp_check_address_list_all(stcb, m, offset, length, init_addr, 3202163953Srrs local_scope, site_scope, ipv4_scope, loopback_scope); 3203163953Srrs } else { 3204163953Srrs /* subset bound case */ 3205163953Srrs if (sctp_is_feature_on(stcb->sctp_ep, 3206163953Srrs SCTP_PCB_FLAGS_DO_ASCONF)) { 3207163953Srrs /* asconf's allowed */ 3208163953Srrs sctp_check_address_list_ep(stcb, m, offset, length, 3209163953Srrs init_addr); 3210163953Srrs } 3211163953Srrs /* else, no asconfs allowed, so what we sent is what we get */ 3212163953Srrs } 3213163953Srrs} 3214163953Srrs 3215163953Srrs/* 3216163953Srrs * sctp_bindx() support 3217163953Srrs */ 3218163953Srrsuint32_t 3219169655Srrssctp_addr_mgmt_ep_sa(struct sctp_inpcb *inp, struct sockaddr *sa, 3220170744Srrs uint32_t type, uint32_t vrf_id, struct sctp_ifa *sctp_ifap) 3221163953Srrs{ 3222167598Srrs struct sctp_ifa *ifa; 3223218521Stuexen struct sctp_laddr *laddr, *nladdr; 3224163953Srrs 3225167598Srrs if (sa->sa_len == 0) { 3226171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EINVAL); 3227163953Srrs return (EINVAL); 3228167598Srrs } 3229170744Srrs if (sctp_ifap) { 3230170744Srrs ifa = sctp_ifap; 3231170744Srrs } else if (type == SCTP_ADD_IP_ADDRESS) { 3232167598Srrs /* For an add the address MUST be on the system */ 3233172091Srrs ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED); 3234167598Srrs } else if (type == SCTP_DEL_IP_ADDRESS) { 3235167598Srrs /* For a delete we need to find it in the inp */ 3236172091Srrs ifa = sctp_find_ifa_in_ep(inp, sa, SCTP_ADDR_NOT_LOCKED); 3237167598Srrs } else { 3238167598Srrs ifa = NULL; 3239167598Srrs } 3240163953Srrs if (ifa != NULL) { 3241167598Srrs if (type == SCTP_ADD_IP_ADDRESS) { 3242167598Srrs sctp_add_local_addr_ep(inp, ifa, type); 3243167598Srrs } else if (type == SCTP_DEL_IP_ADDRESS) { 3244169655Srrs if (inp->laddr_count < 2) { 3245169655Srrs /* can't delete the last local address */ 3246171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EINVAL); 3247169655Srrs return (EINVAL); 3248169655Srrs } 3249169655Srrs LIST_FOREACH(laddr, &inp->sctp_addr_list, 3250169655Srrs sctp_nxt_addr) { 3251167598Srrs if (ifa == laddr->ifa) { 3252167598Srrs /* Mark in the delete */ 3253167598Srrs laddr->action = type; 3254167598Srrs } 3255163953Srrs } 3256163953Srrs } 3257218521Stuexen if (LIST_EMPTY(&inp->sctp_asoc_list)) { 3258199372Stuexen /* 3259199372Stuexen * There is no need to start the iterator if the inp 3260199372Stuexen * has no associations. 3261199372Stuexen */ 3262218521Stuexen if (type == SCTP_DEL_IP_ADDRESS) { 3263218521Stuexen LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) { 3264218521Stuexen if (laddr->ifa == ifa) { 3265218521Stuexen sctp_del_local_addr_ep(inp, ifa); 3266218521Stuexen } 3267218521Stuexen } 3268218521Stuexen } 3269218521Stuexen } else { 3270199372Stuexen struct sctp_asconf_iterator *asc; 3271199372Stuexen struct sctp_laddr *wi; 3272199372Stuexen 3273199372Stuexen SCTP_MALLOC(asc, struct sctp_asconf_iterator *, 3274199372Stuexen sizeof(struct sctp_asconf_iterator), 3275199372Stuexen SCTP_M_ASC_IT); 3276199372Stuexen if (asc == NULL) { 3277199372Stuexen SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, ENOMEM); 3278199372Stuexen return (ENOMEM); 3279199372Stuexen } 3280199372Stuexen wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr); 3281199372Stuexen if (wi == NULL) { 3282199372Stuexen SCTP_FREE(asc, SCTP_M_ASC_IT); 3283199372Stuexen SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_ASCONF, ENOMEM); 3284199372Stuexen return (ENOMEM); 3285199372Stuexen } 3286199372Stuexen LIST_INIT(&asc->list_of_work); 3287199372Stuexen asc->cnt = 1; 3288199372Stuexen SCTP_INCR_LADDR_COUNT(); 3289199372Stuexen wi->ifa = ifa; 3290199372Stuexen wi->action = type; 3291199372Stuexen atomic_add_int(&ifa->refcount, 1); 3292199372Stuexen LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr); 3293199372Stuexen (void)sctp_initiate_iterator(sctp_asconf_iterator_ep, 3294199372Stuexen sctp_asconf_iterator_stcb, 3295199372Stuexen sctp_asconf_iterator_ep_end, 3296199372Stuexen SCTP_PCB_ANY_FLAGS, 3297199372Stuexen SCTP_PCB_ANY_FEATURES, 3298199372Stuexen SCTP_ASOC_ANY_STATE, 3299199372Stuexen (void *)asc, 0, 3300199372Stuexen sctp_asconf_iterator_end, inp, 0); 3301199372Stuexen } 3302199372Stuexen return (0); 3303163953Srrs } else { 3304163953Srrs /* invalid address! */ 3305171943Srrs SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_ASCONF, EADDRNOTAVAIL); 3306163953Srrs return (EADDRNOTAVAIL); 3307163953Srrs } 3308163953Srrs} 3309185694Srrs 3310185694Srrsvoid 3311185694Srrssctp_asconf_send_nat_state_update(struct sctp_tcb *stcb, 3312185694Srrs struct sctp_nets *net) 3313185694Srrs{ 3314185694Srrs struct sctp_asconf_addr *aa; 3315185694Srrs struct sctp_ifa *sctp_ifap; 3316185694Srrs struct sctp_asconf_tag_param *vtag; 3317221249Stuexen 3318221249Stuexen#ifdef INET 3319185694Srrs struct sockaddr_in *to; 3320185694Srrs 3321221249Stuexen#endif 3322185694Srrs#ifdef INET6 3323185694Srrs struct sockaddr_in6 *to6; 3324185694Srrs 3325185694Srrs#endif 3326185694Srrs if (net == NULL) { 3327185694Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "sctp_asconf_send_nat_state_update: Missing net\n"); 3328185694Srrs return; 3329185694Srrs } 3330185694Srrs if (stcb == NULL) { 3331185694Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, "sctp_asconf_send_nat_state_update: Missing stcb\n"); 3332185694Srrs return; 3333185694Srrs } 3334185694Srrs /* 3335185694Srrs * Need to have in the asconf: - vtagparam(my_vtag/peer_vtag) - 3336185694Srrs * add(0.0.0.0) - del(0.0.0.0) - Any global addresses add(addr) 3337185694Srrs */ 3338185694Srrs SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa), 3339185694Srrs SCTP_M_ASC_ADDR); 3340185694Srrs if (aa == NULL) { 3341185694Srrs /* didn't get memory */ 3342185694Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 3343185694Srrs "sctp_asconf_send_nat_state_update: failed to get memory!\n"); 3344185694Srrs return; 3345185694Srrs } 3346185694Srrs aa->special_del = 0; 3347185694Srrs /* fill in asconf address parameter fields */ 3348185694Srrs /* top level elements are "networked" during send */ 3349185694Srrs aa->ifa = NULL; 3350185694Srrs aa->sent = 0; /* clear sent flag */ 3351185694Srrs vtag = (struct sctp_asconf_tag_param *)&aa->ap.aph; 3352185694Srrs vtag->aph.ph.param_type = SCTP_NAT_VTAGS; 3353185694Srrs vtag->aph.ph.param_length = sizeof(struct sctp_asconf_tag_param); 3354185694Srrs vtag->local_vtag = htonl(stcb->asoc.my_vtag); 3355185694Srrs vtag->remote_vtag = htonl(stcb->asoc.peer_vtag); 3356185694Srrs TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next); 3357185694Srrs 3358185694Srrs SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa), 3359185694Srrs SCTP_M_ASC_ADDR); 3360185694Srrs if (aa == NULL) { 3361185694Srrs /* didn't get memory */ 3362185694Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 3363185694Srrs "sctp_asconf_send_nat_state_update: failed to get memory!\n"); 3364185694Srrs return; 3365185694Srrs } 3366185694Srrs memset(aa, 0, sizeof(struct sctp_asconf_addr)); 3367185694Srrs /* fill in asconf address parameter fields */ 3368185694Srrs /* ADD(0.0.0.0) */ 3369221249Stuexen switch (net->ro._l_addr.sa.sa_family) { 3370221249Stuexen#ifdef INET 3371221249Stuexen case AF_INET: 3372185694Srrs aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS; 3373185694Srrs aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addrv4_param); 3374185694Srrs aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS; 3375185694Srrs aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv4addr_param); 3376185694Srrs /* No need to add an address, we are using 0.0.0.0 */ 3377185694Srrs TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next); 3378221249Stuexen break; 3379221249Stuexen#endif 3380185694Srrs#ifdef INET6 3381221249Stuexen case AF_INET6: 3382185694Srrs aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS; 3383185694Srrs aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addr_param); 3384185694Srrs aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS; 3385185694Srrs aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv6addr_param); 3386185694Srrs /* No need to add an address, we are using 0.0.0.0 */ 3387185694Srrs TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next); 3388221249Stuexen break; 3389221249Stuexen#endif 3390185694Srrs } 3391185694Srrs SCTP_MALLOC(aa, struct sctp_asconf_addr *, sizeof(*aa), 3392185694Srrs SCTP_M_ASC_ADDR); 3393185694Srrs if (aa == NULL) { 3394185694Srrs /* didn't get memory */ 3395185694Srrs SCTPDBG(SCTP_DEBUG_ASCONF1, 3396185694Srrs "sctp_asconf_send_nat_state_update: failed to get memory!\n"); 3397185694Srrs return; 3398185694Srrs } 3399185694Srrs memset(aa, 0, sizeof(struct sctp_asconf_addr)); 3400185694Srrs /* fill in asconf address parameter fields */ 3401185694Srrs /* ADD(0.0.0.0) */ 3402221249Stuexen switch (net->ro._l_addr.sa.sa_family) { 3403221249Stuexen#ifdef INET 3404221249Stuexen case AF_INET: 3405185694Srrs aa->ap.aph.ph.param_type = SCTP_ADD_IP_ADDRESS; 3406185694Srrs aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addrv4_param); 3407185694Srrs aa->ap.addrp.ph.param_type = SCTP_IPV4_ADDRESS; 3408185694Srrs aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv4addr_param); 3409185694Srrs /* No need to add an address, we are using 0.0.0.0 */ 3410185694Srrs TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next); 3411221249Stuexen break; 3412221249Stuexen#endif 3413185694Srrs#ifdef INET6 3414221249Stuexen case AF_INET6: 3415185694Srrs aa->ap.aph.ph.param_type = SCTP_DEL_IP_ADDRESS; 3416185694Srrs aa->ap.aph.ph.param_length = sizeof(struct sctp_asconf_addr_param); 3417185694Srrs aa->ap.addrp.ph.param_type = SCTP_IPV6_ADDRESS; 3418185694Srrs aa->ap.addrp.ph.param_length = sizeof(struct sctp_ipv6addr_param); 3419185694Srrs /* No need to add an address, we are using 0.0.0.0 */ 3420185694Srrs TAILQ_INSERT_TAIL(&stcb->asoc.asconf_queue, aa, next); 3421221249Stuexen break; 3422221249Stuexen#endif 3423185694Srrs } 3424185694Srrs /* Now we must hunt the addresses and add all global addresses */ 3425185694Srrs if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 3426185694Srrs struct sctp_vrf *vrf = NULL; 3427185694Srrs struct sctp_ifn *sctp_ifnp; 3428185694Srrs uint32_t vrf_id; 3429185694Srrs 3430185694Srrs vrf_id = stcb->sctp_ep->def_vrf_id; 3431185694Srrs vrf = sctp_find_vrf(vrf_id); 3432185694Srrs if (vrf == NULL) { 3433185694Srrs goto skip_rest; 3434185694Srrs } 3435185694Srrs SCTP_IPI_ADDR_RLOCK(); 3436185694Srrs LIST_FOREACH(sctp_ifnp, &vrf->ifnlist, next_ifn) { 3437185694Srrs LIST_FOREACH(sctp_ifap, &sctp_ifnp->ifalist, next_ifa) { 3438221249Stuexen switch (sctp_ifap->address.sa.sa_family) { 3439221249Stuexen#ifdef INET 3440221249Stuexen case AF_INET: 3441185694Srrs to = &sctp_ifap->address.sin; 3442267799Stuexen if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred, 3443267799Stuexen &to->sin_addr) != 0) { 3444267799Stuexen continue; 3445267799Stuexen } 3446185694Srrs if (IN4_ISPRIVATE_ADDRESS(&to->sin_addr)) { 3447185694Srrs continue; 3448185694Srrs } 3449185694Srrs if (IN4_ISLOOPBACK_ADDRESS(&to->sin_addr)) { 3450185694Srrs continue; 3451185694Srrs } 3452221249Stuexen break; 3453221249Stuexen#endif 3454185694Srrs#ifdef INET6 3455221249Stuexen case AF_INET6: 3456185694Srrs to6 = &sctp_ifap->address.sin6; 3457267799Stuexen if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred, 3458267799Stuexen &to6->sin6_addr) != 0) { 3459267799Stuexen continue; 3460267799Stuexen } 3461185694Srrs if (IN6_IS_ADDR_LOOPBACK(&to6->sin6_addr)) { 3462185694Srrs continue; 3463185694Srrs } 3464185694Srrs if (IN6_IS_ADDR_LINKLOCAL(&to6->sin6_addr)) { 3465185694Srrs continue; 3466185694Srrs } 3467221249Stuexen break; 3468221249Stuexen#endif 3469221249Stuexen default: 3470221249Stuexen continue; 3471185694Srrs } 3472185694Srrs sctp_asconf_queue_mgmt(stcb, sctp_ifap, SCTP_ADD_IP_ADDRESS); 3473185694Srrs } 3474185694Srrs } 3475185694Srrs SCTP_IPI_ADDR_RUNLOCK(); 3476185694Srrs } else { 3477185694Srrs struct sctp_laddr *laddr; 3478185694Srrs 3479185694Srrs LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) { 3480185694Srrs if (laddr->ifa == NULL) { 3481185694Srrs continue; 3482185694Srrs } 3483185694Srrs if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) 3484185694Srrs /* 3485185694Srrs * Address being deleted by the system, dont 3486185694Srrs * list. 3487185694Srrs */ 3488185694Srrs continue; 3489185694Srrs if (laddr->action == SCTP_DEL_IP_ADDRESS) { 3490185694Srrs /* 3491185694Srrs * Address being deleted on this ep don't 3492185694Srrs * list. 3493185694Srrs */ 3494185694Srrs continue; 3495185694Srrs } 3496185694Srrs sctp_ifap = laddr->ifa; 3497221249Stuexen switch (sctp_ifap->address.sa.sa_family) { 3498221249Stuexen#ifdef INET 3499221249Stuexen case AF_INET: 3500185694Srrs to = &sctp_ifap->address.sin; 3501185694Srrs if (IN4_ISPRIVATE_ADDRESS(&to->sin_addr)) { 3502185694Srrs continue; 3503185694Srrs } 3504185694Srrs if (IN4_ISLOOPBACK_ADDRESS(&to->sin_addr)) { 3505185694Srrs continue; 3506185694Srrs } 3507221249Stuexen break; 3508221249Stuexen#endif 3509185694Srrs#ifdef INET6 3510221249Stuexen case AF_INET6: 3511185694Srrs to6 = &sctp_ifap->address.sin6; 3512185694Srrs if (IN6_IS_ADDR_LOOPBACK(&to6->sin6_addr)) { 3513185694Srrs continue; 3514185694Srrs } 3515185694Srrs if (IN6_IS_ADDR_LINKLOCAL(&to6->sin6_addr)) { 3516185694Srrs continue; 3517185694Srrs } 3518221249Stuexen break; 3519221249Stuexen#endif 3520221249Stuexen default: 3521221249Stuexen continue; 3522185694Srrs } 3523185694Srrs sctp_asconf_queue_mgmt(stcb, sctp_ifap, SCTP_ADD_IP_ADDRESS); 3524185694Srrs } 3525185694Srrs } 3526185694Srrsskip_rest: 3527185694Srrs /* Now we must send the asconf into the queue */ 3528224641Stuexen sctp_send_asconf(stcb, net, SCTP_ADDR_NOT_LOCKED); 3529185694Srrs} 3530