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| author | Jamal Hadi Salim <hadi@cyberus.ca> | 2007-04-26 11:10:29 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-04-26 11:10:29 +0400 |
| commit | 28d8909bc790d936ce33f4402adf7577533bbd4b (patch) | |
| tree | 8de479d6660aba23bc99fa555c150852548df58d /include/net/xfrm.h | |
| parent | 98486fa2f4894e2b01e325c659635596bdec1614 (diff) | |
| download | linux-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/xfrm.h')
| -rw-r--r-- | include/net/xfrm.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h index e144a25814bd..8287081d77f2 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); |