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authorVlad Yasevich <vladislav.yasevich@hp.com>2008-07-18 23:05:40 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-18 23:05:40 -0700
commit7dab83de50c7b2b7ceac695a0b56fa6c0f95b0bc (patch)
tree979c6905f2ef643acccfea9ab9ed926e764e72c8 /net/sctp/ipv6.c
parent6d0ccbac688207ca0616ab5094932af4db4747b3 (diff)
sctp: Support ipv6only AF_INET6 sockets.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/ipv6.c')
-rw-r--r--net/sctp/ipv6.c20
1 files changed, 16 insertions, 4 deletions
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index a2f4d4d5159..a238d6834b3 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -818,7 +818,7 @@ static int sctp_inet6_af_supported(sa_family_t family, struct sctp_sock *sp)
return 1;
/* v4-mapped-v6 addresses */
case AF_INET:
- if (!__ipv6_only_sock(sctp_opt2sk(sp)) && sp->v4mapped)
+ if (!__ipv6_only_sock(sctp_opt2sk(sp)))
return 1;
default:
return 0;
@@ -840,6 +840,11 @@ static int sctp_inet6_cmp_addr(const union sctp_addr *addr1,
if (!af1 || !af2)
return 0;
+
+ /* If the socket is IPv6 only, v4 addrs will not match */
+ if (__ipv6_only_sock(sctp_opt2sk(opt)) && af1 != af2)
+ return 0;
+
/* Today, wildcard AF_INET/AF_INET6. */
if (sctp_is_any(addr1) || sctp_is_any(addr2))
return 1;
@@ -876,7 +881,11 @@ static int sctp_inet6_bind_verify(struct sctp_sock *opt, union sctp_addr *addr)
return 0;
}
dev_put(dev);
+ } else if (type == IPV6_ADDR_MAPPED) {
+ if (!opt->v4mapped)
+ return 0;
}
+
af = opt->pf->af;
}
return af->available(addr, opt);
@@ -919,9 +928,12 @@ static int sctp_inet6_send_verify(struct sctp_sock *opt, union sctp_addr *addr)
static int sctp_inet6_supported_addrs(const struct sctp_sock *opt,
__be16 *types)
{
- types[0] = SCTP_PARAM_IPV4_ADDRESS;
- types[1] = SCTP_PARAM_IPV6_ADDRESS;
- return 2;
+ types[0] = SCTP_PARAM_IPV6_ADDRESS;
+ if (!opt || !ipv6_only_sock(sctp_opt2sk(opt))) {
+ types[1] = SCTP_PARAM_IPV4_ADDRESS;
+ return 2;
+ }
+ return 1;
}
static const struct proto_ops inet6_seqpacket_ops = {