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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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6
security/capability.c
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@@ -776,11 +776,6 @@ static int cap_tun_dev_open(void *security)
{
return 0;
}
static void cap_skb_owned_by(struct sk_buff *skb, struct sock *sk)
{
}
#endif /* CONFIG_SECURITY_NETWORK */
#ifdef CONFIG_SECURITY_NETWORK_XFRM
@@ -1134,7 +1129,6 @@ void __init security_fixup_ops(struct security_operations *ops)
set_to_cap_if_null(ops, tun_dev_open);
set_to_cap_if_null(ops, tun_dev_attach_queue);
set_to_cap_if_null(ops, tun_dev_attach);
set_to_cap_if_null(ops, skb_owned_by);
#endif /* CONFIG_SECURITY_NETWORK */
#ifdef CONFIG_SECURITY_NETWORK_XFRM
set_to_cap_if_null(ops, xfrm_policy_alloc_security);