selinux: Cache NetLabel secattrs in the socket's security struct
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>
diff --git a/security/selinux/include/netlabel.h b/security/selinux/include/netlabel.h
index 982bac0..b913c8d 100644
--- a/security/selinux/include/netlabel.h
+++ b/security/selinux/include/netlabel.h
@@ -41,6 +41,7 @@
void selinux_netlbl_err(struct sk_buff *skb, int error, int gateway);
+void selinux_netlbl_sk_security_free(struct sk_security_struct *ssec);
void selinux_netlbl_sk_security_reset(struct sk_security_struct *ssec,
int family);
@@ -77,6 +78,12 @@
return;
}
+static inline void selinux_netlbl_sk_security_free(
+ struct sk_security_struct *ssec)
+{
+ return;
+}
+
static inline void selinux_netlbl_sk_security_reset(
struct sk_security_struct *ssec,
int family)