udp: pass udp_offload struct to UDP gro callbacks

This patch introduces udp_offload_callbacks which has the same
GRO functions (but not a GSO function) as offload_callbacks,
except there is an argument to a udp_offload struct passed to
gro_receive and gro_complete functions. This additional argument
can be used to retrieve the per port structure of the encapsulation
for use in gro processing (mostly by doing container_of on the
structure).

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 985359dd6033..5c56a3ff25aa 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -539,7 +539,9 @@ static int vxlan_fdb_append(struct vxlan_fdb *f,
         return 1;
 }
 
-static struct sk_buff **vxlan_gro_receive(struct sk_buff **head, struct sk_buff *skb)
+static struct sk_buff **vxlan_gro_receive(struct sk_buff **head,
+                                          struct sk_buff *skb,
+                                          struct udp_offload *uoff)
 {
         struct sk_buff *p, **pp = NULL;
         struct vxlanhdr *vh, *vh2;
@@ -578,7 +580,8 @@ out:
         return pp;
 }
 
-static int vxlan_gro_complete(struct sk_buff *skb, int nhoff)
+static int vxlan_gro_complete(struct sk_buff *skb, int nhoff,
+                              struct udp_offload *uoff)
 {
         udp_tunnel_gro_complete(skb, nhoff);