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Code Issues Releases Activity

Ignore peer addresses in a consistent way also when checking for

Browse Source 
new addresses during restart. If this is not done, restart doesn't
work when the local socket is IPv4 only and the peer uses
IPv4 and IPv6 addresses.

MFC after: 3 days.
This commit is contained in:
Michael Tuexen 2016-01-30 10:39:05 +00:00
parent 4ac8a40011
commit 843d04a89e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=295069
1 changed files with 62 additions and 35 deletions
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97
sys/netinet/sctp_output.c
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@ -5307,6 +5307,7 @@ sctp_are_there_new_addresses(struct sctp_association *asoc,
uint16_t ptype, plen;
uint8_t fnd;
struct sctp_nets *net;
int check_src;
#ifdef INET
struct sockaddr_in sin4, *sa4;
@ -5328,39 +5329,61 @@ sctp_are_there_new_addresses(struct sctp_association *asoc,
sin6.sin6_len = sizeof(sin6);
#endif
/* First what about the src address of the pkt ? */
fnd = 0;
TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
sa = (struct sockaddr *)&net->ro._l_addr;
if (sa->sa_family == src->sa_family) {
check_src = 0;
switch (src->sa_family) {
#ifdef INET
if (sa->sa_family == AF_INET) {
struct sockaddr_in *src4;
sa4 = (struct sockaddr_in *)sa;
src4 = (struct sockaddr_in *)src;
if (sa4->sin_addr.s_addr == src4->sin_addr.s_addr) {
fnd = 1;
break;
}
}
case AF_INET:
if (asoc->scope.ipv4_addr_legal) {
check_src = 1;
}
break;
#endif
#ifdef INET6
if (sa->sa_family == AF_INET6) {
struct sockaddr_in6 *src6;
sa6 = (struct sockaddr_in6 *)sa;
src6 = (struct sockaddr_in6 *)src;
if (SCTP6_ARE_ADDR_EQUAL(sa6, src6)) {
fnd = 1;
break;
}
}
#endif
case AF_INET6:
if (asoc->scope.ipv6_addr_legal) {
check_src = 1;
}
break;
#endif
default:
/* TSNH */
break;
}
if (fnd == 0) {
/* New address added! no need to look futher. */
return (1);
if (check_src) {
fnd = 0;
TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
sa = (struct sockaddr *)&net->ro._l_addr;
if (sa->sa_family == src->sa_family) {
#ifdef INET
if (sa->sa_family == AF_INET) {
struct sockaddr_in *src4;
sa4 = (struct sockaddr_in *)sa;
src4 = (struct sockaddr_in *)src;
if (sa4->sin_addr.s_addr == src4->sin_addr.s_addr) {
fnd = 1;
break;
}
}
#endif
#ifdef INET6
if (sa->sa_family == AF_INET6) {
struct sockaddr_in6 *src6;
sa6 = (struct sockaddr_in6 *)sa;
src6 = (struct sockaddr_in6 *)src;
if (SCTP6_ARE_ADDR_EQUAL(sa6, src6)) {
fnd = 1;
break;
}
}
#endif
}
}
if (fnd == 0) {
/* New address added! no need to look futher. */
return (1);
}
}
/* Ok so far lets munge through the rest of the packet */
offset += sizeof(struct sctp_init_chunk);
@ -5381,9 +5404,11 @@ sctp_are_there_new_addresses(struct sctp_association *asoc,
phdr == NULL) {
return (1);
}
p4 = (struct sctp_ipv4addr_param *)phdr;
sin4.sin_addr.s_addr = p4->addr;
sa_touse = (struct sockaddr *)&sin4;
if (asoc->scope.ipv4_addr_legal) {
p4 = (struct sctp_ipv4addr_param *)phdr;
sin4.sin_addr.s_addr = p4->addr;
sa_touse = (struct sockaddr *)&sin4;
}
break;
}
#endif
@ -5398,10 +5423,12 @@ sctp_are_there_new_addresses(struct sctp_association *asoc,
phdr == NULL) {
return (1);
}
p6 = (struct sctp_ipv6addr_param *)phdr;
memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
sizeof(p6->addr));
sa_touse = (struct sockaddr *)&sin6;
if (asoc->scope.ipv6_addr_legal) {
p6 = (struct sctp_ipv6addr_param *)phdr;
memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
sizeof(p6->addr));
sa_touse = (struct sockaddr *)&sin6;
}
break;
}
#endif