udp: Add GRO functions to UDP socket
This patch adds GRO functions (gro_receive and gro_complete) to UDP
sockets. udp_gro_receive is changed to perform socket lookup on a
packet. If a socket is found the related GRO functions are called.
This features obsoletes using UDP offload infrastructure for GRO
(udp_offload). This has the advantage of not being limited to provide
offload on a per port basis, GRO is now applied to whatever individual
UDP sockets are bound to. This also allows the possbility of
"application defined GRO"-- that is we can attach something like
a BPF program to a UDP socket to perfrom GRO on an application
layer protocol.
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/udp.h b/include/net/udp.h
index 3aa0b3e..3c5a65e 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -167,9 +167,12 @@
UDP_SKB_CB(skb)->cscov -= sizeof(struct udphdr);
}
+typedef struct sock *(*udp_lookup_t)(struct sk_buff *skb, __be16 sport,
+ __be16 dport);
+
struct sk_buff **udp_gro_receive(struct sk_buff **head, struct sk_buff *skb,
- struct udphdr *uh);
-int udp_gro_complete(struct sk_buff *skb, int nhoff);
+ struct udphdr *uh, udp_lookup_t lookup);
+int udp_gro_complete(struct sk_buff *skb, int nhoff, udp_lookup_t lookup);
static inline struct udphdr *udp_gro_udphdr(struct sk_buff *skb)
{