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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-11-10 04:58:25 +0100 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-03 06:21:52 +0100 |
| commit | 931731123a103cfb3f70ac4b7abfc71d94ba1f03 (patch) | |
| tree | 0af6636fde05f74a8aa5421bfe9828e2a209170d /include | |
| parent | [NET] ip-sysctl.txt: Alphabetize. (diff) | |
| download | linux-931731123a103cfb3f70ac4b7abfc71d94ba1f03.tar.xz linux-931731123a103cfb3f70ac4b7abfc71d94ba1f03.zip | |
[TCP]: Don't set SKB owner in tcp_transmit_skb().
The data itself is already charged to the SKB, doing
the skb_set_owner_w() just generates a lot of noise and
extra atomics we don't really need.
Lmbench improvements on lat_tcp are minimal:
before:
TCP latency using localhost: 23.2701 microseconds
TCP latency using localhost: 23.1994 microseconds
TCP latency using localhost: 23.2257 microseconds
after:
TCP latency using localhost: 22.8380 microseconds
TCP latency using localhost: 22.9465 microseconds
TCP latency using localhost: 22.8462 microseconds
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/inet6_connection_sock.h | 2 | ||||
| -rw-r--r-- | include/net/inet_connection_sock.h | 3 | ||||
| -rw-r--r-- | include/net/ip.h | 2 |
3 files changed, 4 insertions, 3 deletions
diff --git a/include/net/inet6_connection_sock.h b/include/net/inet6_connection_sock.h index f13ddc2543b1..16aa96a6a53b 100644 --- a/include/net/inet6_connection_sock.h +++ b/include/net/inet6_connection_sock.h @@ -38,5 +38,5 @@ extern void inet6_csk_reqsk_queue_hash_add(struct sock *sk, extern void inet6_csk_addr2sockaddr(struct sock *sk, struct sockaddr *uaddr); -extern int inet6_csk_xmit(struct sk_buff *skb, int ipfragok); +extern int inet6_csk_xmit(struct sk_buff *skb, struct sock *sk, int ipfragok); #endif /* _INET6_CONNECTION_SOCK_H */ diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h index 0bcf9f237e1f..fd3f1d8cdc4a 100644 --- a/include/net/inet_connection_sock.h +++ b/include/net/inet_connection_sock.h @@ -36,7 +36,8 @@ struct tcp_congestion_ops; * (i.e. things that depend on the address family) */ struct inet_connection_sock_af_ops { - int (*queue_xmit)(struct sk_buff *skb, int ipfragok); + int (*queue_xmit)(struct sk_buff *skb, struct sock *sk, + int ipfragok); void (*send_check)(struct sock *sk, int len, struct sk_buff *skb); int (*rebuild_header)(struct sock *sk); diff --git a/include/net/ip.h b/include/net/ip.h index b6d95e553401..949fa8683626 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -97,7 +97,7 @@ extern int ip_mc_output(struct sk_buff *skb); extern int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *)); extern int ip_do_nat(struct sk_buff *skb); extern void ip_send_check(struct iphdr *ip); -extern int ip_queue_xmit(struct sk_buff *skb, int ipfragok); +extern int ip_queue_xmit(struct sk_buff *skb, struct sock *sk, int ipfragok); extern void ip_init(void); extern int ip_append_data(struct sock *sk, int getfrag(void *from, char *to, int offset, int len, |