[MIPS] Update/Fix instruction definitions

[powerpc.git] / net / netfilter / core.c

diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 645d621..8455a32 100644 (file)
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -27,6 +27,29 @@
 
 #include "nf_internals.h"
 
+static DEFINE_SPINLOCK(afinfo_lock);
+
+struct nf_afinfo *nf_afinfo[NPROTO];
+EXPORT_SYMBOL(nf_afinfo);
+
+int nf_register_afinfo(struct nf_afinfo *afinfo)
+{
+       spin_lock(&afinfo_lock);
+       rcu_assign_pointer(nf_afinfo[afinfo->family], afinfo);
+       spin_unlock(&afinfo_lock);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(nf_register_afinfo);
+
+void nf_unregister_afinfo(struct nf_afinfo *afinfo)
+{
+       spin_lock(&afinfo_lock);
+       rcu_assign_pointer(nf_afinfo[afinfo->family], NULL);
+       spin_unlock(&afinfo_lock);
+       synchronize_rcu();
+}
+EXPORT_SYMBOL_GPL(nf_unregister_afinfo);
+
 /* In this code, we can be waiting indefinitely for userspace to
  * service a packet if a hook returns NF_QUEUE.  We could keep a count
  * of skbuffs queued for userspace, and not deregister a hook unless