From a6024562ffd7e0f31bc6671817840ad1e91de7b4 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Tue, 5 Apr 2016 08:22:51 -0700 Subject: 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 Signed-off-by: David S. Miller --- include/net/udp.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'include/net/udp.h') 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 @@ static inline void udp_csum_pull_header(struct sk_buff *skb) 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) { -- cgit v1.1