[NETFILTER]: nf_conntrack_expect: kill unique ID

Similar to the conntrack ID, the per-expectation ID is not needed
anymore, kill it.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 3 insertions, 8 deletions

diff --git a/include/net/netfilter/nf_conntrack_expect.h b/include/net/netfilter/nf_conntrack_expect.h
index cae1a0dce365..b47c04f12dbe 100644
--- a/include/net/netfilter/nf_conntrack_expect.h
+++ b/include/net/netfilter/nf_conntrack_expect.h
@@ -38,9 +38,6 @@ struct nf_conntrack_expect
         /* Usage count. */
         atomic_t use;
 
-        /* Unique ID */
-        unsigned int id;
-
         /* Flags */
         unsigned int flags;
 
diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
index 8a3e3af656bf..7a0ae36c9b47 100644
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -41,7 +41,6 @@ static int nf_ct_expect_hash_rnd_initted __read_mostly;
 static int nf_ct_expect_vmalloc;
 
 static struct kmem_cache *nf_ct_expect_cachep __read_mostly;
-static unsigned int nf_ct_expect_next_id;
 
 /* nf_conntrack_expect helper functions */
 void nf_ct_unlink_expect(struct nf_conntrack_expect *exp)
@@ -302,7 +301,6 @@ static void nf_ct_expect_insert(struct nf_conntrack_expect *exp)
         exp->timeout.expires = jiffies + master_help->helper->timeout * HZ;
         add_timer(&exp->timeout);
 
-        exp->id = ++nf_ct_expect_next_id;
         atomic_inc(&exp->use);
         NF_CT_STAT_INC(expect_create);
 }
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 8406aee1cdee..2abd648f7d6f 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1160,7 +1160,7 @@ ctnetlink_exp_dump_expect(struct sk_buff *skb,
 {
         struct nf_conn *master = exp->master;
         __be32 timeout = htonl((exp->timeout.expires - jiffies) / HZ);
-        __be32 id = htonl(exp->id);
+        __be32 id = htonl((unsigned long)exp);
 
         if (ctnetlink_exp_dump_tuple(skb, &exp->tuple, CTA_EXPECT_TUPLE) < 0)
                 goto nla_put_failure;
@@ -1346,7 +1346,7 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb,
 
         if (cda[CTA_EXPECT_ID]) {
                 __be32 id = *(__be32 *)nla_data(cda[CTA_EXPECT_ID]);
-                if (exp->id != ntohl(id)) {
+                if (ntohl(id) != (u32)(unsigned long)exp) {
                         nf_ct_expect_put(exp);
                         return -ENOENT;
                 }
@@ -1400,7 +1400,7 @@ ctnetlink_del_expect(struct sock *ctnl, struct sk_buff *skb,
 
                 if (cda[CTA_EXPECT_ID]) {
                         __be32 id = *(__be32 *)nla_data(cda[CTA_EXPECT_ID]);
-                        if (exp->id != ntohl(id)) {
+                        if (ntohl(id) != (u32)(unsigned long)exp) {
                                 nf_ct_expect_put(exp);
                                 return -ENOENT;
                         }