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[SOCK]: Introduce sk_setup_caps

Browse source 
From tcp_v4_setup_caps, that always is preceded by a call to
__sk_dst_set, so coalesce this sequence into sk_setup_caps, removing
one call to a TCP function in the IP layer.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo 2005-08-09 19:49:02 -07:00 committed by David S. Miller
parent 614c6cb4f2
commit 6cbb0df788
5 changed files with 17 additions and 22 deletions
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10
include/net/sock.h
View file

@ -1025,6 +1025,16 @@ sk_dst_check(struct sock *sk, u32 cookie)
return dst;
}
static inline void sk_setup_caps(struct sock *sk, struct dst_entry *dst)
{
__sk_dst_set(sk, dst);
sk->sk_route_caps = dst->dev->features;
if (sk->sk_route_caps & NETIF_F_TSO) {
if (sock_flag(sk, SOCK_NO_LARGESEND) || dst->header_len)
sk->sk_route_caps &= ~NETIF_F_TSO;
}
}
static inline void sk_charge_skb(struct sock *sk, struct sk_buff *skb)
{
sk->sk_wmem_queued += skb->truesize;

9
include/net/tcp.h
View file

@ -1658,15 +1658,6 @@ static inline int tcp_paws_check(const struct tcp_options_received *rx_opt, int
return 1;
}
static inline void tcp_v4_setup_caps(struct sock *sk, struct dst_entry *dst)
{
sk->sk_route_caps = dst->dev->features;
if (sk->sk_route_caps & NETIF_F_TSO) {
if (sock_flag(sk, SOCK_NO_LARGESEND) || dst->header_len)
sk->sk_route_caps &= ~NETIF_F_TSO;
}
}
#define TCP_CHECK_TIMER(sk) do { } while (0)
static inline int tcp_use_frto(const struct sock *sk)

7
net/ipv4/ip_output.c
View file

@ -69,13 +69,10 @@
#include <net/ip.h>
#include <net/protocol.h>
#include <net/route.h>
#include <net/tcp.h>
#include <net/udp.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <net/arp.h>
#include <net/icmp.h>
#include <net/raw.h>
#include <net/checksum.h>
#include <net/inetpeer.h>
#include <net/checksum.h>
@ -84,6 +81,7 @@
#include <linux/netfilter_bridge.h>
#include <linux/mroute.h>
#include <linux/netlink.h>
#include <linux/tcp.h>
/*
* Shall we try to damage output packets if routing dev changes?
@ -329,8 +327,7 @@ int ip_queue_xmit(struct sk_buff *skb, int ipfragok)
if (ip_route_output_flow(&rt, &fl, sk, 0))
goto no_route;
}
__sk_dst_set(sk, &rt->u.dst);
tcp_v4_setup_caps(sk, &rt->u.dst);
sk_setup_caps(sk, &rt->u.dst);
}
skb->dst = dst_clone(&rt->u.dst);

12
net/ipv4/tcp_ipv4.c
View file

@ -837,8 +837,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
goto failure;
/* OK, now commit destination to socket. */
__sk_dst_set(sk, &rt->u.dst);
tcp_v4_setup_caps(sk, &rt->u.dst);
sk_setup_caps(sk, &rt->u.dst);
if (!tp->write_seq)
tp->write_seq = secure_tcp_sequence_number(inet->saddr,
@ -1553,8 +1552,7 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
if (!newsk)
goto exit;
newsk->sk_dst_cache = dst;
tcp_v4_setup_caps(newsk, dst);
sk_setup_caps(newsk, dst);
newtp = tcp_sk(newsk);
newinet = inet_sk(newsk);
@ -1855,8 +1853,7 @@ static int tcp_v4_reselect_saddr(struct sock *sk)
if (err)
return err;
__sk_dst_set(sk, &rt->u.dst);
tcp_v4_setup_caps(sk, &rt->u.dst);
sk_setup_caps(sk, &rt->u.dst);
new_saddr = rt->rt_src;
@ -1914,8 +1911,7 @@ int tcp_v4_rebuild_header(struct sock *sk)
err = ip_route_output_flow(&rt, &fl, sk, 0);
}
if (!err) {
__sk_dst_set(sk, &rt->u.dst);
tcp_v4_setup_caps(sk, &rt->u.dst);
sk_setup_caps(sk, &rt->u.dst);
return 0;
}

1
net/ipv4/tcp_minisocks.c
View file

@ -711,6 +711,7 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct request_sock *req,
bh_lock_sock(newsk);
rwlock_init(&newsk->sk_dst_lock);
newsk->sk_dst_cache = NULL;
atomic_set(&newsk->sk_rmem_alloc, 0);
skb_queue_head_init(&newsk->sk_receive_queue);
atomic_set(&newsk->sk_wmem_alloc, 0);