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selinux: Cache NetLabel secattrs in the socket's security struct

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Previous work enabled the use of address based NetLabel selectors, which
while highly useful, brought the potential for additional per-packet overhead
when used.  This patch attempts to mitigate some of that overhead by caching
the NetLabel security attribute struct within the SELinux socket security
structure.  This should help eliminate the need to recreate the NetLabel
secattr structure for each packet resulting in less overhead.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Acked-by: James Morris <jmorris@namei.org>
This commit is contained in:
Paul Moore 2008-10-10 10:16:33 -04:00
parent 014ab19a69
commit 6c5b3fc014
4 changed files with 91 additions and 39 deletions
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1
security/selinux/hooks.c
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@ -291,6 +291,7 @@ static void sk_free_security(struct sock *sk)
struct sk_security_struct *ssec = sk->sk_security;
sk->sk_security = NULL;
selinux_netlbl_sk_security_free(ssec);
kfree(ssec);
}