netfilter: netns nf_conntrack: per-netns event cache

Heh, last minute proof-reading of this patch made me think,
that this is actually unneeded, simply because "ct" pointers will be
different for different conntracks in different netns, just like they
are different in one netns.

Not so sure anymore.

[Patrick: pointers will be different, flushing can only be done while
 inactive though and thus it needs to be per netns]

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h
index 6ddf58e142a9..9d5c1623c51f 100644
--- a/include/net/netns/conntrack.h
+++ b/include/net/netns/conntrack.h
@@ -4,12 +4,17 @@
 #include <linux/list.h>
 #include <asm/atomic.h>
 
+struct nf_conntrack_ecache;
+
 struct netns_ct {
         atomic_t                count;
         unsigned int            expect_count;
         struct hlist_head       *hash;
         struct hlist_head       *expect_hash;
         struct hlist_head       unconfirmed;
+#ifdef CONFIG_NF_CONNTRACK_EVENTS
+        struct nf_conntrack_ecache *ecache;
+#endif
         int                     hash_vmalloc;
         int                     expect_vmalloc;
 };