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authorDavid S. Miller <davem@sunset.davemloft.net>2006-10-12 22:03:24 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-10-15 23:14:18 -0700
commit918049f0135854a1583f9b3b88f44dbf2b027329 (patch)
treeddddc6beed8bf1cbe472d2fe106de34cf1726faa /net
parent4663afe2c848e2abc8791202beecf40684f13eb4 (diff)
downloadop-kernel-dev-918049f0135854a1583f9b3b88f44dbf2b027329.zip
op-kernel-dev-918049f0135854a1583f9b3b88f44dbf2b027329.tar.gz
[XFRM]: Fix xfrm_state_num going negative.
Missing counter bump when hashing in a new ACQ xfrm_state. Now that we have two spots to do the hash grow check, break it out into a helper function. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/xfrm/xfrm_state.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 39b8bf3..84bbf84 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -614,6 +614,14 @@ out:
return x;
}
+static void xfrm_hash_grow_check(int have_hash_collision)
+{
+ if (have_hash_collision &&
+ (xfrm_state_hmask + 1) < xfrm_state_hashmax &&
+ xfrm_state_num > xfrm_state_hmask)
+ schedule_work(&xfrm_hash_work);
+}
+
static void __xfrm_state_insert(struct xfrm_state *x)
{
unsigned int h;
@@ -642,10 +650,7 @@ static void __xfrm_state_insert(struct xfrm_state *x)
xfrm_state_num++;
- if (x->bydst.next != NULL &&
- (xfrm_state_hmask + 1) < xfrm_state_hashmax &&
- xfrm_state_num > xfrm_state_hmask)
- schedule_work(&xfrm_hash_work);
+ xfrm_hash_grow_check(x->bydst.next != NULL);
}
/* xfrm_state_lock is held */
@@ -753,6 +758,10 @@ static struct xfrm_state *__find_acq_core(unsigned short family, u8 mode, u32 re
h = xfrm_src_hash(daddr, saddr, family);
hlist_add_head(&x->bysrc, xfrm_state_bysrc+h);
wake_up(&km_waitq);
+
+ xfrm_state_num++;
+
+ xfrm_hash_grow_check(x->bydst.next != NULL);
}
return x;
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