ipv4: Fixed MD5 key lookups when adding/ removing MD5 to/ from TCP sockets.

MD5 key lookups on a given TCP socket were being performed
incorrectly. This fix alters parameter inputs to the MD5
lookup function tcp_md5_do_lookup, which is called by functions
tcp_md5_do_add and tcp_md5_do_del. Specifically, the change now
inputs the correct address and address family required to make
a proper lookup.

Signed-off-by: Aydin Arik <aydin.arik@alliedtelesis.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 719652305a29..7999fc55c83b 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1003,7 +1003,7 @@ int tcp_md5_do_add(struct sock *sk, const union tcp_md5_addr *addr,
         struct tcp_sock *tp = tcp_sk(sk);
         struct tcp_md5sig_info *md5sig;
 
-        key = tcp_md5_do_lookup(sk, (union tcp_md5_addr *)&addr, AF_INET);
+        key = tcp_md5_do_lookup(sk, addr, family);
         if (key) {
                 /* Pre-existing entry - just update that one. */
                 memcpy(key->key, newkey, newkeylen);
@@ -1048,7 +1048,7 @@ int tcp_md5_do_del(struct sock *sk, const union tcp_md5_addr *addr, int family)
         struct tcp_md5sig_key *key;
         struct tcp_md5sig_info *md5sig;
 
-        key = tcp_md5_do_lookup(sk, (union tcp_md5_addr *)&addr, AF_INET);
+        key = tcp_md5_do_lookup(sk, addr, family);
         if (!key)
                 return -ENOENT;
         hlist_del_rcu(&key->node);