Commit e4d1feab authored by Vlad Yasevich's avatar Vlad Yasevich
Browse files

SCTP: IPv4 mapped addr not returned in SCTPv6 accept()



When issuing a connect call on an AF_INET6 sctp socket with
a IPv4-mapped destination, the peer address that is returned
by getpeeraddr() should be v4-mapped as well.
Signed-off-by: default avatarVlad Yasevich <vladislav.yasevich@hp.com>
parent b225b884
......@@ -975,7 +975,7 @@ static int __sctp_connect(struct sock* sk,
int err = 0;
int addrcnt = 0;
int walk_size = 0;
union sctp_addr *sa_addr;
union sctp_addr *sa_addr = NULL;
void *addr_buf;
unsigned short port;
unsigned int f_flags = 0;
......@@ -1009,7 +1009,10 @@ static int __sctp_connect(struct sock* sk,
goto out_free;
}
err = sctp_verify_addr(sk, sa_addr, af->sockaddr_len);
/* Save current address so we can work with it */
memcpy(&to, sa_addr, af->sockaddr_len);
err = sctp_verify_addr(sk, &to, af->sockaddr_len);
if (err)
goto out_free;
......@@ -1019,12 +1022,11 @@ static int __sctp_connect(struct sock* sk,
if (asoc && asoc->peer.port && asoc->peer.port != port)
goto out_free;
memcpy(&to, sa_addr, af->sockaddr_len);
/* Check if there already is a matching association on the
* endpoint (other than the one created here).
*/
asoc2 = sctp_endpoint_lookup_assoc(ep, sa_addr, &transport);
asoc2 = sctp_endpoint_lookup_assoc(ep, &to, &transport);
if (asoc2 && asoc2 != asoc) {
if (asoc2->state >= SCTP_STATE_ESTABLISHED)
err = -EISCONN;
......@@ -1037,7 +1039,7 @@ static int __sctp_connect(struct sock* sk,
* make sure that there is no peeled-off association matching
* the peer address even on another socket.
*/
if (sctp_endpoint_is_peeled_off(ep, sa_addr)) {
if (sctp_endpoint_is_peeled_off(ep, &to)) {
err = -EADDRNOTAVAIL;
goto out_free;
}
......@@ -1068,7 +1070,7 @@ static int __sctp_connect(struct sock* sk,
}
}
scope = sctp_scope(sa_addr);
scope = sctp_scope(&to);
asoc = sctp_association_new(ep, sk, scope, GFP_KERNEL);
if (!asoc) {
err = -ENOMEM;
......@@ -1077,7 +1079,7 @@ static int __sctp_connect(struct sock* sk,
}
/* Prime the peer's transport structures. */
transport = sctp_assoc_add_peer(asoc, sa_addr, GFP_KERNEL,
transport = sctp_assoc_add_peer(asoc, &to, GFP_KERNEL,
SCTP_UNKNOWN);
if (!transport) {
err = -ENOMEM;
......@@ -1101,8 +1103,8 @@ static int __sctp_connect(struct sock* sk,
/* Initialize sk's dport and daddr for getpeername() */
inet_sk(sk)->dport = htons(asoc->peer.port);
af = sctp_get_af_specific(to.sa.sa_family);
af->to_sk_daddr(&to, sk);
af = sctp_get_af_specific(sa_addr->sa.sa_family);
af->to_sk_daddr(sa_addr, sk);
sk->sk_err = 0;
/* in-kernel sockets don't generally have a file allocated to them
......
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