diff options
| author | Florian Westphal <fw@strlen.de> | 2016-05-02 16:39:55 (GMT) |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-05-05 14:39:47 (GMT) |
| commit | 56d52d4892d0e478a005b99ed10d0a7f488ea8c1 (patch) | |
| tree | 89f2c12e4f197ac3876f5ebf01f61b7a3f49dd3e /include/net | |
| parent | 1b8c8a9f648c809c01a44114d7535ac8ca4c5ba3 (diff) | |
| download | linux-56d52d4892d0e478a005b99ed10d0a7f488ea8c1.tar.xz | |
netfilter: conntrack: use a single hashtable for all namespaces
We already include netns address in the hash and compare the netns pointers
during lookup, so even if namespaces have overlapping addresses entries
will be spread across the table.
Assuming 64k bucket size, this change saves 0.5 mbyte per namespace on a
64bit system.
NAT bysrc and expectation hash is still per namespace, those will
changed too soon.
Future patch will also make conntrack object slab cache global again.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/netfilter/nf_conntrack_core.h | 1 | ||||
| -rw-r--r-- | include/net/netns/conntrack.h | 2 |
2 files changed, 1 insertions, 2 deletions
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h index 62e17d1..3e2f332 100644 --- a/include/net/netfilter/nf_conntrack_core.h +++ b/include/net/netfilter/nf_conntrack_core.h @@ -81,6 +81,7 @@ print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple, #define CONNTRACK_LOCKS 1024 +extern struct hlist_nulls_head *nf_conntrack_hash; extern spinlock_t nf_conntrack_locks[CONNTRACK_LOCKS]; void nf_conntrack_lock(spinlock_t *lock); diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h index b052785..251c435 100644 --- a/include/net/netns/conntrack.h +++ b/include/net/netns/conntrack.h @@ -93,9 +93,7 @@ struct netns_ct { int sysctl_tstamp; int sysctl_checksum; - unsigned int htable_size; struct kmem_cache *nf_conntrack_cachep; - struct hlist_nulls_head *hash; struct hlist_head *expect_hash; struct ct_pcpu __percpu *pcpu_lists; struct ip_conntrack_stat __percpu *stat; |