IPVS: Turn off FTP application helper for IPv6

Immediately return from FTP application helper and do nothing when dealing
with IPv6 packets. IPv6 is not supported by this helper yet.

Signed-off-by: Julius Volz <juliusv@google.com>
Signed-off-by: Simon Horman <horms@verge.net.au>

diff --git a/net/ipv4/ipvs/ip_vs_ftp.c b/net/ipv4/ipvs/ip_vs_ftp.c
index 0c3fbe0..2e7dbd8 100644 (file)
--- a/net/ipv4/ipvs/ip_vs_ftp.c
+++ b/net/ipv4/ipvs/ip_vs_ftp.c
@@ -147,6 +147,14 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
        unsigned buf_len;
        int ret;
 
+#ifdef CONFIG_IP_VS_IPV6
+       /* This application helper doesn't work with IPv6 yet,
+        * so turn this into a no-op for IPv6 packets
+        */
+       if (cp->af == AF_INET6)
+               return 1;
+#endif
+
        *diff = 0;
 
        /* Only useful for established sessions */
@@ -248,6 +256,14 @@ static int ip_vs_ftp_in(struct ip_vs_app *app, struct ip_vs_conn *cp,
        __be16 port;
        struct ip_vs_conn *n_cp;
 
+#ifdef CONFIG_IP_VS_IPV6
+       /* This application helper doesn't work with IPv6 yet,
+        * so turn this into a no-op for IPv6 packets
+        */
+       if (cp->af == AF_INET6)
+               return 1;
+#endif
+
        /* no diff required for incoming packets */
        *diff = 0;