diff options
| author | Jamal Hadi Salim <hadi@cyberus.ca> | 2007-04-26 00:10:29 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-04-26 00:10:29 -0700 |
| commit | 28d8909bc790d936ce33f4402adf7577533bbd4b (patch) | |
| tree | 8de479d6660aba23bc99fa555c150852548df58d /net/xfrm/xfrm_state.c | |
| parent | 98486fa2f4894e2b01e325c659635596bdec1614 (diff) | |
[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 'net/xfrm/xfrm_state.c')
| -rw-r--r-- | net/xfrm/xfrm_state.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 743f07e7f698..f3a61ebd8d65 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -421,6 +421,16 @@ restart: } EXPORT_SYMBOL(xfrm_state_flush); +void xfrm_sad_getinfo(struct xfrm_sadinfo *si) +{ + spin_lock_bh(&xfrm_state_lock); + si->sadcnt = xfrm_state_num; + si->sadhcnt = xfrm_state_hmask; + si->sadhmcnt = xfrm_state_hashmax; + spin_unlock_bh(&xfrm_state_lock); +} +EXPORT_SYMBOL(xfrm_sad_getinfo); + static int xfrm_init_tempsel(struct xfrm_state *x, struct flowi *fl, struct xfrm_tmpl *tmpl, |