datapath: enable encap for capwap.

kernel 3.5 added a switch to turn on UDP encap, capwap needs
to enable it.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>

diff --git a/datapath/linux/compat/include/linux/udp.h b/datapath/linux/compat/include/linux/udp.h
index 6fe4721..6a805b5 100644 (file)
--- a/datapath/linux/compat/include/linux/udp.h
+++ b/datapath/linux/compat/include/linux/udp.h
@@ -10,4 +10,9 @@ static inline struct udphdr *udp_hdr(const struct sk_buff *skb)
 }
 #endif /* HAVE_SKBUFF_HEADER_HELPERS */
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0)
+static inline void udp_encap_enable(void)
+{
+}
+#endif
 #endif

diff --git a/datapath/vport-capwap.c b/datapath/vport-capwap.c
index 39aec42..4061c7b 100644 (file)
--- a/datapath/vport-capwap.c
+++ b/datapath/vport-capwap.c
@@ -445,7 +445,7 @@ static int init_socket(struct net *net)
        capwap_net->frag_state.low_thresh       = CAPWAP_FRAG_PRUNE_MEM;
 
        inet_frags_init_net(&capwap_net->frag_state);
-
+       udp_encap_enable();
        capwap_net->n_tunnels++;
        return 0;