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authorJamal Hadi Salim <hadi@cyberus.ca>2007-04-26 07:10:29 (GMT)
committerDavid S. Miller <davem@davemloft.net>2007-04-26 07:10:29 (GMT)
commit28d8909bc790d936ce33f4402adf7577533bbd4b (patch)
tree8de479d6660aba23bc99fa555c150852548df58d /include/net
parent98486fa2f4894e2b01e325c659635596bdec1614 (diff)
downloadlinux-28d8909bc790d936ce33f4402adf7577533bbd4b.tar.xz
[XFRM]: Export SAD info.
On a system with a lot of SAs, counting SAD entries chews useful CPU time since you need to dump the whole SAD to user space; i.e something like ip xfrm state ls | grep -i src | wc -l I have seen taking literally minutes on a 40K SAs when the system is swapping. With this patch, some of the SAD info (that was already being tracked) is exposed to user space. i.e you do: ip xfrm state count And you get the count; you can also pass -s to the command line and get the hash info. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/xfrm.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index e144a25..8287081 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -416,6 +416,13 @@ struct xfrm_audit
u32 secid;
};
+/* SAD metadata, add more later */
+struct xfrm_sadinfo
+{
+ u32 sadhcnt; /* current hash bkts */
+ u32 sadhmcnt; /* max allowed hash bkts */
+ u32 sadcnt; /* current running count */
+};
#ifdef CONFIG_AUDITSYSCALL
extern void xfrm_audit_log(uid_t auid, u32 secid, int type, int result,
struct xfrm_policy *xp, struct xfrm_state *x);
@@ -938,6 +945,7 @@ static inline int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **s
extern struct xfrm_state *xfrm_find_acq_byseq(u32 seq);
extern int xfrm_state_delete(struct xfrm_state *x);
extern void xfrm_state_flush(u8 proto, struct xfrm_audit *audit_info);
+extern void xfrm_sad_getinfo(struct xfrm_sadinfo *si);
extern int xfrm_replay_check(struct xfrm_state *x, __be32 seq);
extern void xfrm_replay_advance(struct xfrm_state *x, __be32 seq);
extern void xfrm_replay_notify(struct xfrm_state *x, int event);