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authorJamal Hadi Salim <hadi@cyberus.ca>2007-04-26 00:10:29 -0700
committerDavid S. Miller <davem@davemloft.net>2007-04-26 00:10:29 -0700
commit28d8909bc790d936ce33f4402adf7577533bbd4b (patch)
tree8de479d6660aba23bc99fa555c150852548df58d /net/xfrm/xfrm_state.c
parent98486fa2f4894e2b01e325c659635596bdec1614 (diff)
downloadop-kernel-dev-28d8909bc790d936ce33f4402adf7577533bbd4b.zip
op-kernel-dev-28d8909bc790d936ce33f4402adf7577533bbd4b.tar.gz
[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.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 743f07e..f3a61eb 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,
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