[SCTP] Add support for ip_nonlocal_bind sysctl & IP_FREEBIND socket option

Signed-off-by: Neil Horman <nhorman@redhat.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 2 deletions

diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 2e1f9c3556f5..5135e1a25d25 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -378,10 +378,13 @@ static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp)
 {
         int ret = inet_addr_type(addr->v4.sin_addr.s_addr);
 
-        /* FIXME: ip_nonlocal_bind sysctl support. */
 
-        if (addr->v4.sin_addr.s_addr != INADDR_ANY && ret != RTN_LOCAL)
+        if (addr->v4.sin_addr.s_addr != INADDR_ANY &&
+           ret != RTN_LOCAL &&
+           !sp->inet.freebind &&
+           !sysctl_ip_nonlocal_bind)
                 return 0;
+
         return 1;
 }