netfilter: replace list_head with single linked list

[cascardo/linux.git] / net / netfilter / nf_queue.c

diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c
index b19ad20..96964a0 100644 (file)
--- a/net/netfilter/nf_queue.c
+++ b/net/netfilter/nf_queue.c
@@ -96,14 +96,14 @@ void nf_queue_entry_get_refs(struct nf_queue_entry *entry)
 }
 EXPORT_SYMBOL_GPL(nf_queue_entry_get_refs);
 
-void nf_queue_nf_hook_drop(struct net *net, struct nf_hook_ops *ops)
+void nf_queue_nf_hook_drop(struct net *net, const struct nf_hook_entry *entry)
 {
        const struct nf_queue_handler *qh;
 
        rcu_read_lock();
        qh = rcu_dereference(net->nf.queue_handler);
        if (qh)
-               qh->nf_hook_drop(net, ops);
+               qh->nf_hook_drop(net, entry);
        rcu_read_unlock();
 }
 
@@ -112,7 +112,6 @@ void nf_queue_nf_hook_drop(struct net *net, struct nf_hook_ops *ops)
  * through nf_reinject().
  */
 int nf_queue(struct sk_buff *skb,
-            struct nf_hook_ops *elem,
             struct nf_hook_state *state,
             unsigned int queuenum)
 {
@@ -141,7 +140,6 @@ int nf_queue(struct sk_buff *skb,
 
        *entry = (struct nf_queue_entry) {
                .skb    = skb,
-               .elem   = elem,
                .state  = *state,
                .size   = sizeof(*entry) + afinfo->route_key_size,
        };
@@ -165,11 +163,15 @@ err:
 
 void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
 {
+       struct nf_hook_entry *hook_entry;
        struct sk_buff *skb = entry->skb;
-       struct nf_hook_ops *elem = entry->elem;
        const struct nf_afinfo *afinfo;
+       struct nf_hook_ops *elem;
        int err;
 
+       hook_entry = rcu_dereference(entry->state.hook_entries);
+       elem = &hook_entry->ops;
+
        nf_queue_entry_release_refs(entry);
 
        /* Continue traversal iff userspace said ok... */
@@ -186,8 +188,7 @@ void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
 
        if (verdict == NF_ACCEPT) {
        next_hook:
-               verdict = nf_iterate(entry->state.hook_list,
-                                    skb, &entry->state, &elem);
+               verdict = nf_iterate(skb, &entry->state, &hook_entry);
        }
 
        switch (verdict & NF_VERDICT_MASK) {
@@ -198,7 +199,8 @@ void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
                local_bh_enable();
                break;
        case NF_QUEUE:
-               err = nf_queue(skb, elem, &entry->state,
+               RCU_INIT_POINTER(entry->state.hook_entries, hook_entry);
+               err = nf_queue(skb, &entry->state,
                               verdict >> NF_VERDICT_QBITS);
                if (err < 0) {
                        if (err == -ESRCH &&