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Revert "selinux: add a skb_owned_by() hook"

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This reverts commit ca10b9e9a8.

No longer needed after commit eb8895debe
("tcp: tcp_make_synack() should use sock_wmalloc")

When under SYNFLOOD, we build lot of SYNACK and hit false sharing
because of multiple modifications done on sk_listener->sk_wmem_alloc

Since tcp_make_synack() uses sock_wmalloc(), there is no need
to call skb_set_owner_w() again, as this adds two atomic operations.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2015-03-20 17:15:19 -07:00 • committed by David S. Miller
parent f6877fcf22
commit d3593b5cef
5 changed files with 0 additions and 27 deletions
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8
include/linux/security.h
View file

@ -1716,7 +1716,6 @@ struct security_operations {
int (*tun_dev_attach_queue) (void *security);
int (*tun_dev_attach) (struct sock *sk, void *security);
int (*tun_dev_open) (void *security);
void (*skb_owned_by) (struct sk_buff *skb, struct sock *sk);
#endif /* CONFIG_SECURITY_NETWORK */
#ifdef CONFIG_SECURITY_NETWORK_XFRM
@ -2735,8 +2734,6 @@ int security_tun_dev_attach_queue(void *security);
int security_tun_dev_attach(struct sock *sk, void *security);
int security_tun_dev_open(void *security);
void security_skb_owned_by(struct sk_buff *skb, struct sock *sk);
#else /* CONFIG_SECURITY_NETWORK */
static inline int security_unix_stream_connect(struct sock *sock,
struct sock *other,
@ -2928,11 +2925,6 @@ static inline int security_tun_dev_open(void *security)
{
return 0;
}
static inline void security_skb_owned_by(struct sk_buff *skb, struct sock *sk)
{
}
#endif /* CONFIG_SECURITY_NETWORK */
#ifdef CONFIG_SECURITY_NETWORK_XFRM