tcp: disallow bind() to reuse addr/port

[pandora-kernel.git] / net / ipv4 / inet_connection_sock.c

diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 25e3181..97e5fb7 100644 (file)
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -73,7 +73,7 @@ int inet_csk_bind_conflict(const struct sock *sk,
                     !sk2->sk_bound_dev_if ||
                     sk->sk_bound_dev_if == sk2->sk_bound_dev_if)) {
                        if (!reuse || !sk2->sk_reuse ||
-                           sk2->sk_state == TCP_LISTEN) {
+                           ((1 << sk2->sk_state) & (TCPF_LISTEN | TCPF_CLOSE))) {
                                const __be32 sk2_rcv_saddr = sk_rcv_saddr(sk2);
                                if (!sk2_rcv_saddr || !sk_rcv_saddr(sk) ||
                                    sk2_rcv_saddr == sk_rcv_saddr(sk))
@@ -122,7 +122,8 @@ again:
                                            (tb->num_owners < smallest_size || smallest_size == -1)) {
                                                smallest_size = tb->num_owners;
                                                smallest_rover = rover;
-                                               if (atomic_read(&hashinfo->bsockets) > (high - low) + 1) {
+                                               if (atomic_read(&hashinfo->bsockets) > (high - low) + 1 &&
+                                                   !inet_csk(sk)->icsk_af_ops->bind_conflict(sk, tb)) {
                                                        spin_unlock(&head->lock);
                                                        snum = smallest_rover;
                                                        goto have_snum;