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authorJesper Dangaard Brouer <hawk@comx.dk>2010-04-23 12:34:56 +0200
committerPatrick McHardy <kaber@trash.net>2010-04-23 12:34:56 +0200
commitaf740b2c8f4521e2c45698ee6040941a82d6349d (patch)
treeae9fb87ebbfd422b07cb8e027fbe13e9c40c403e /include/linux/netfilter
parentcecc74de25d2cfb08e7702cd38e3f195950f1228 (diff)
netfilter: nf_conntrack: extend with extra stat counter
I suspect an unfortunatly series of events occuring under a DDoS attack, in function __nf_conntrack_find() nf_contrack_core.c. Adding a stats counter to see if the search is restarted too often. Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include/linux/netfilter')
-rw-r--r--include/linux/netfilter/nf_conntrack_common.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/netfilter/nf_conntrack_common.h b/include/linux/netfilter/nf_conntrack_common.h
index c608677dda60..14e6d32002c4 100644
--- a/include/linux/netfilter/nf_conntrack_common.h
+++ b/include/linux/netfilter/nf_conntrack_common.h
@@ -113,6 +113,7 @@ struct ip_conntrack_stat {
unsigned int expect_new;
unsigned int expect_create;
unsigned int expect_delete;
+ unsigned int search_restart;
};
/* call to create an explicit dependency on nf_conntrack. */