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authorPatrick McHardy <kaber@trash.net>2007-07-07 22:30:27 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-10 22:17:43 -0700
commit53aba5979e1d964c0234816eda2316f1c2e7946d (patch)
tree042b0528b82f119d2a452c0e2a448f1d4d04fb14 /net/ipv4
parentac565e5fc104fe1842a87f2206fcfb7b6dda903d (diff)
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[NETFILTER]: nf_nat: use hlists for bysource hash
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/netfilter/nf_nat_core.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c
index 04691ed..f242ac6 100644
--- a/net/ipv4/netfilter/nf_nat_core.c
+++ b/net/ipv4/netfilter/nf_nat_core.c
@@ -12,7 +12,6 @@
#include <linux/types.h>
#include <linux/timer.h>
#include <linux/skbuff.h>
-#include <linux/vmalloc.h>
#include <net/checksum.h>
#include <net/icmp.h>
#include <net/ip.h>
@@ -44,8 +43,9 @@ static struct nf_conntrack_l3proto *l3proto = NULL;
/* Calculated at init based on memory size */
static unsigned int nf_nat_htable_size;
+static int nf_nat_vmalloced;
-static struct list_head *bysource;
+static struct hlist_head *bysource;
#define MAX_IP_NAT_PROTO 256
static struct nf_nat_protocol *nf_nat_protos[MAX_IP_NAT_PROTO];
@@ -153,9 +153,10 @@ find_appropriate_src(const struct nf_conntrack_tuple *tuple,
unsigned int h = hash_by_src(tuple);
struct nf_conn_nat *nat;
struct nf_conn *ct;
+ struct hlist_node *n;
read_lock_bh(&nf_nat_lock);
- list_for_each_entry(nat, &bysource[h], bysource) {
+ hlist_for_each_entry(nat, n, &bysource[h], bysource) {
ct = nat->ct;
if (same_src(ct, tuple)) {
/* Copy source part from reply tuple. */
@@ -336,7 +337,7 @@ nf_nat_setup_info(struct nf_conn *ct,
/* nf_conntrack_alter_reply might re-allocate exntension aera */
nat = nfct_nat(ct);
nat->ct = ct;
- list_add(&nat->bysource, &bysource[srchash]);
+ hlist_add_head(&nat->bysource, &bysource[srchash]);
write_unlock_bh(&nf_nat_lock);
}
@@ -600,7 +601,7 @@ static void nf_nat_cleanup_conntrack(struct nf_conn *ct)
NF_CT_ASSERT(nat->ct->status & IPS_NAT_DONE_MASK);
write_lock_bh(&nf_nat_lock);
- list_del(&nat->bysource);
+ hlist_del(&nat->bysource);
nat->ct = NULL;
write_unlock_bh(&nf_nat_lock);
}
@@ -618,7 +619,7 @@ static void nf_nat_move_storage(struct nf_conn *conntrack, void *old)
srchash = hash_by_src(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
write_lock_bh(&nf_nat_lock);
- list_replace(&old_nat->bysource, &new_nat->bysource);
+ hlist_replace_rcu(&old_nat->bysource, &new_nat->bysource);
new_nat->ct = ct;
write_unlock_bh(&nf_nat_lock);
}
@@ -646,8 +647,8 @@ static int __init nf_nat_init(void)
/* Leave them the same for the moment. */
nf_nat_htable_size = nf_conntrack_htable_size;
- /* One vmalloc for both hash tables */
- bysource = vmalloc(sizeof(struct list_head) * nf_nat_htable_size);
+ bysource = nf_ct_alloc_hashtable(&nf_nat_htable_size,
+ &nf_nat_vmalloced);
if (!bysource) {
ret = -ENOMEM;
goto cleanup_extend;
@@ -663,7 +664,7 @@ static int __init nf_nat_init(void)
write_unlock_bh(&nf_nat_lock);
for (i = 0; i < nf_nat_htable_size; i++) {
- INIT_LIST_HEAD(&bysource[i]);
+ INIT_HLIST_HEAD(&bysource[i]);
}
/* Initialize fake conntrack so that NAT will skip it */
@@ -693,7 +694,7 @@ static void __exit nf_nat_cleanup(void)
{
nf_ct_iterate_cleanup(&clean_nat, NULL);
synchronize_rcu();
- vfree(bysource);
+ nf_ct_free_hashtable(bysource, nf_nat_vmalloced, nf_nat_htable_size);
nf_ct_l3proto_put(l3proto);
nf_ct_extend_unregister(&nat_extend);
}