| sctp_asconf.c (171440) | sctp_asconf.c (171477) |
|---|---|
| 1/*- 2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * a) Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. --- 17 unchanged lines hidden (view full) --- 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31/* $KAME: sctp_asconf.c,v 1.24 2005/03/06 16:04:16 itojun Exp $ */ 32 33#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * a) Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. --- 17 unchanged lines hidden (view full) --- 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31/* $KAME: sctp_asconf.c,v 1.24 2005/03/06 16:04:16 itojun Exp $ */ 32 33#include <sys/cdefs.h> |
| 34__FBSDID("$FreeBSD: head/sys/netinet/sctp_asconf.c 171440 2007-07-14 09:36:28Z rrs $"); | 34__FBSDID("$FreeBSD: head/sys/netinet/sctp_asconf.c 171477 2007-07-17 20:58:26Z rrs $"); |
| 35#include <netinet/sctp_os.h> 36#include <netinet/sctp_var.h> 37#include <netinet/sctp_sysctl.h> 38#include <netinet/sctp_pcb.h> 39#include <netinet/sctp_header.h> 40#include <netinet/sctputil.h> 41#include <netinet/sctp_output.h> 42#include <netinet/sctp_asconf.h> --- 46 unchanged lines hidden (view full) --- 89#endif /* INET6 */ 90 else 91 return; 92} 93 94/* 95 * draft-ietf-tsvwg-addip-sctp 96 * | 35#include <netinet/sctp_os.h> 36#include <netinet/sctp_var.h> 37#include <netinet/sctp_sysctl.h> 38#include <netinet/sctp_pcb.h> 39#include <netinet/sctp_header.h> 40#include <netinet/sctputil.h> 41#include <netinet/sctp_output.h> 42#include <netinet/sctp_asconf.h> --- 46 unchanged lines hidden (view full) --- 89#endif /* INET6 */ 90 else 91 return; 92} 93 94/* 95 * draft-ietf-tsvwg-addip-sctp 96 * |
| 97 * Address management only currently supported For the bound all case: the asoc 98 * local addr list is always a "DO NOT USE" list For the subset bound case: 99 * If ASCONFs are allowed: the endpoint local addr list is the usable address 100 * list the asoc local addr list is the "DO NOT USE" list If ASCONFs are not 101 * allowed: the endpoint local addr list is the default usable list the asoc 102 * local addr list is the usable address list 103 * | |
| 104 * An ASCONF parameter queue exists per asoc which holds the pending address 105 * operations. Lists are updated upon receipt of ASCONF-ACK. 106 * | 97 * An ASCONF parameter queue exists per asoc which holds the pending address 98 * operations. Lists are updated upon receipt of ASCONF-ACK. 99 * |
| 100 * A restricted_addrs list exists per assoc to hold local addresses that are 101 * not (yet) usable by the assoc as a source address. These addresses are 102 * either pending an ASCONF operation (and exist on the ASCONF parameter 103 * queue), or they are permanently restricted (the peer has returned an 104 * ERROR indication to an ASCONF(ADD), or the peer does not support ASCONF). 105 * |
|
| 107 * Deleted addresses are always immediately removed from the lists as they will 108 * (shortly) no longer exist in the kernel. We send ASCONFs as a courtesy, 109 * only if allowed. 110 */ 111 112/* | 106 * Deleted addresses are always immediately removed from the lists as they will 107 * (shortly) no longer exist in the kernel. We send ASCONFs as a courtesy, 108 * only if allowed. 109 */ 110 111/* |
| 113 * ASCONF parameter processing response_required: set if a reply is required 114 * (eg. SUCCESS_REPORT) returns a mbuf to an "error" response parameter or 115 * NULL/"success" if ok FIX: allocating this many mbufs on the fly is pretty 116 * inefficient... | 112 * ASCONF parameter processing. 113 * response_required: set if a reply is required (eg. SUCCESS_REPORT). 114 * returns a mbuf to an "error" response parameter or NULL/"success" if ok. 115 * FIX: allocating this many mbufs on the fly is pretty inefficient... |
| 117 */ 118static struct mbuf * 119sctp_asconf_success_response(uint32_t id) 120{ 121 struct mbuf *m_reply = NULL; 122 struct sctp_asconf_paramhdr *aph; 123 124 m_reply = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_paramhdr), --- 778 unchanged lines hidden (view full) --- 903 * add an asconf add/delete IP address parameter to the queue. 904 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR. 905 * returns 0 if completed, non-zero if not completed. 906 * NOTE: if adding, but delete already scheduled (and not yet sent out), 907 * simply remove from queue. Same for deleting an address already scheduled 908 * for add. If a duplicate operation is found, ignore the new one. 909 */ 910static uint32_t | 116 */ 117static struct mbuf * 118sctp_asconf_success_response(uint32_t id) 119{ 120 struct mbuf *m_reply = NULL; 121 struct sctp_asconf_paramhdr *aph; 122 123 m_reply = sctp_get_mbuf_for_msg(sizeof(struct sctp_asconf_paramhdr), --- 778 unchanged lines hidden (view full) --- 902 * add an asconf add/delete IP address parameter to the queue. 903 * type = SCTP_ADD_IP_ADDRESS, SCTP_DEL_IP_ADDRESS, SCTP_SET_PRIM_ADDR. 904 * returns 0 if completed, non-zero if not completed. 905 * NOTE: if adding, but delete already scheduled (and not yet sent out), 906 * simply remove from queue. Same for deleting an address already scheduled 907 * for add. If a duplicate operation is found, ignore the new one. 908 */ 909static uint32_t |
| 911sctp_asconf_queue_add(struct sctp_tcb *stcb, struct sctp_ifa *ifa, uint16_t type) | 910sctp_asconf_queue_add(struct sctp_tcb *stcb, struct sctp_ifa *ifa, 911 uint16_t type) |
| 912{ 913 struct sctp_asconf_addr *aa, *aa_next; 914 struct sockaddr *sa; 915 916 /* see if peer supports ASCONF */ 917 if (stcb->asoc.peer_supports_asconf == 0) { 918 return (-1); 919 } --- 298 unchanged lines hidden (view full) --- 1218 break; 1219 default: 1220 break; 1221 } 1222 } 1223} 1224 1225/* | 912{ 913 struct sctp_asconf_addr *aa, *aa_next; 914 struct sockaddr *sa; 915 916 /* see if peer supports ASCONF */ 917 if (stcb->asoc.peer_supports_asconf == 0) { 918 return (-1); 919 } --- 298 unchanged lines hidden (view full) --- 1218 break; 1219 default: 1220 break; 1221 } 1222 } 1223} 1224 1225/* |
| 1226 * process an asconf queue param aparam: parameter to process, will be 1227 * removed from the queue flag: 1=success, 0=failure | 1226 * process an asconf queue param. 1227 * aparam: parameter to process, will be removed from the queue. 1228 * flag: 1=success case, 0=failure case |
| 1228 */ 1229static void 1230sctp_asconf_process_param_ack(struct sctp_tcb *stcb, 1231 struct sctp_asconf_addr *aparam, uint32_t flag) 1232{ 1233 uint16_t param_type; 1234 1235 /* process this param */ --- 191 unchanged lines hidden (view full) --- 1427 aa = aa_next) { 1428 aa_next = TAILQ_NEXT(aa, next); 1429 if (aa->sent == 1) { 1430 /* 1431 * implicitly successful or failed if correlation_id 1432 * < last_error_id, then success else, failure 1433 */ 1434 if (aa->ap.aph.correlation_id < last_error_id) | 1229 */ 1230static void 1231sctp_asconf_process_param_ack(struct sctp_tcb *stcb, 1232 struct sctp_asconf_addr *aparam, uint32_t flag) 1233{ 1234 uint16_t param_type; 1235 1236 /* process this param */ --- 191 unchanged lines hidden (view full) --- 1428 aa = aa_next) { 1429 aa_next = TAILQ_NEXT(aa, next); 1430 if (aa->sent == 1) { 1431 /* 1432 * implicitly successful or failed if correlation_id 1433 * < last_error_id, then success else, failure 1434 */ 1435 if (aa->ap.aph.correlation_id < last_error_id) |
| 1435 sctp_asconf_process_param_ack(stcb, aa, 1436 SCTP_SUCCESS_REPORT); | 1436 sctp_asconf_process_param_ack(stcb, aa, 1); |
| 1437 else | 1437 else |
| 1438 sctp_asconf_process_param_ack(stcb, aa, 1439 SCTP_ERROR_CAUSE_IND); | 1438 sctp_asconf_process_param_ack(stcb, aa, 0); |
| 1440 } else { 1441 /* 1442 * since we always process in order (FIFO queue) if 1443 * we reach one that hasn't been sent, the rest 1444 * should not have been sent either. so, we're 1445 * done... 1446 */ 1447 break; --- 76 unchanged lines hidden (view full) --- 1524 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) 1525 return; 1526 /* is the v6 addr really valid ? */ 1527 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { 1528 return; 1529 } 1530 } 1531 /* put this address on the "pending/do not use yet" list */ | 1439 } else { 1440 /* 1441 * since we always process in order (FIFO queue) if 1442 * we reach one that hasn't been sent, the rest 1443 * should not have been sent either. so, we're 1444 * done... 1445 */ 1446 break; --- 76 unchanged lines hidden (view full) --- 1523 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) 1524 return; 1525 /* is the v6 addr really valid ? */ 1526 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { 1527 return; 1528 } 1529 } 1530 /* put this address on the "pending/do not use yet" list */ |
| 1532 /* 1533 * Note: we do this primarily for the subset bind case We don't have 1534 * scoping flags at the EP level, so we must add link local/site 1535 * local addresses to the EP, then need to "negate" them here. 1536 * Recall that this routine is only called for the subset bound 1537 * w/ASCONF allowed case. 1538 */ | |
| 1539 sctp_add_local_addr_assoc(stcb, ifa, 1); 1540 /* 1541 * check address scope if address is out of scope, don't queue 1542 * anything... note: this would leave the address on both inp and 1543 * asoc lists 1544 */ 1545 if (ifa->address.sa.sa_family == AF_INET6) { 1546 struct sockaddr_in6 *sin6; --- 272 unchanged lines hidden (view full) --- 1819 stcb->asoc.ipv6_addr_legal, 1820 stcb->asoc.loopback_scope, 1821 stcb->asoc.ipv4_local_scope, 1822 stcb->asoc.local_scope, 1823 stcb->asoc.site_scope, 0) == 0) { 1824 continue; 1825 } 1826 } | 1531 sctp_add_local_addr_assoc(stcb, ifa, 1); 1532 /* 1533 * check address scope if address is out of scope, don't queue 1534 * anything... note: this would leave the address on both inp and 1535 * asoc lists 1536 */ 1537 if (ifa->address.sa.sa_family == AF_INET6) { 1538 struct sockaddr_in6 *sin6; --- 272 unchanged lines hidden (view full) --- 1811 stcb->asoc.ipv6_addr_legal, 1812 stcb->asoc.loopback_scope, 1813 stcb->asoc.ipv4_local_scope, 1814 stcb->asoc.local_scope, 1815 stcb->asoc.site_scope, 0) == 0) { 1816 continue; 1817 } 1818 } |
| 1827 | |
| 1828 } 1829 /* queue an asconf for this address add/delete */ 1830 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF)) { 1831 /* does the peer do asconf? */ 1832 if (stcb->asoc.peer_supports_asconf) { 1833 /* queue an asconf for this addr */ 1834 status = sctp_asconf_queue_add(stcb, ifa, type); 1835 /* --- 177 unchanged lines hidden (view full) --- 2013 /* found a valid local address to use */ 2014 return (&laddr->ifa->address.sa); 2015 } 2016 /* no valid addresses found */ 2017 return (NULL); 2018} 2019 2020/* | 1819 } 1820 /* queue an asconf for this address add/delete */ 1821 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF)) { 1822 /* does the peer do asconf? */ 1823 if (stcb->asoc.peer_supports_asconf) { 1824 /* queue an asconf for this addr */ 1825 status = sctp_asconf_queue_add(stcb, ifa, type); 1826 /* --- 177 unchanged lines hidden (view full) --- 2004 /* found a valid local address to use */ 2005 return (&laddr->ifa->address.sa); 2006 } 2007 /* no valid addresses found */ 2008 return (NULL); 2009} 2010 2011/* |
| 2021 * builds an ASCONF chunk from queued ASCONF params returns NULL on error (no 2022 * mbuf, no ASCONF params queued, etc) | 2012 * builds an ASCONF chunk from queued ASCONF params. 2013 * returns NULL on error (no mbuf, no ASCONF params queued, etc). |
| 2023 */ 2024struct mbuf * 2025sctp_compose_asconf(struct sctp_tcb *stcb, int *retlen) 2026{ 2027 struct mbuf *m_asconf, *m_asconf_chk; 2028 struct sctp_asconf_addr *aa; 2029 struct sctp_asconf_chunk *acp; 2030 struct sctp_asconf_paramhdr *aph; --- 594 unchanged lines hidden --- | 2014 */ 2015struct mbuf * 2016sctp_compose_asconf(struct sctp_tcb *stcb, int *retlen) 2017{ 2018 struct mbuf *m_asconf, *m_asconf_chk; 2019 struct sctp_asconf_addr *aa; 2020 struct sctp_asconf_chunk *acp; 2021 struct sctp_asconf_paramhdr *aph; --- 594 unchanged lines hidden --- |