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net: implement tcp coalescing in tcp_queue_rcv()

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Extend tcp coalescing implementing it from tcp_queue_rcv(), the main
receiver function when application is not blocked in recvmsg().

Function tcp_queue_rcv() is moved a bit to allow its call from
tcp_data_queue()

This gives good results especially if GRO could not kick, and if skb
head is a fragment.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2012-05-02 09:58:29 +00:00
committed by David S. Miller
parent 923dd347b8
commit b081f85c29
3 changed files with 28 additions and 25 deletions
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3
include/net/tcp.h
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@ -439,7 +439,8 @@ extern int tcp_disconnect(struct sock *sk, int flags);
void tcp_connect_init(struct sock *sk);
void tcp_finish_connect(struct sock *sk, struct sk_buff *skb);
void tcp_queue_rcv(struct sock *sk, struct sk_buff *skb, int hdrlen);
int __must_check tcp_queue_rcv(struct sock *sk, struct sk_buff *skb,
int hdrlen, bool *fragstolen);
/* From syncookies.c */
extern __u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS];