[INET]: Move the TCP hashtable functions/structs to inet_hashtables.[ch]

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 52 insertions, 27 deletions

diff --git a/net/ipv4/Makefile b/net/ipv4/Makefile
index 61c7386bcd2e..2d8d30e83eb0 100644
--- a/net/ipv4/Makefile
+++ b/net/ipv4/Makefile
@@ -4,7 +4,7 @@
 
 obj-y     := route.o inetpeer.o protocol.o \
 	     ip_input.o ip_fragment.o ip_forward.o ip_options.o \
-	     ip_output.o ip_sockglue.o \
+	     ip_output.o ip_sockglue.o inet_hashtables.o \
 	     tcp.o tcp_input.o tcp_output.o tcp_timer.o tcp_ipv4.o \
 	     tcp_minisocks.o tcp_cong.o \
 	     datagram.o raw.o udp.o arp.o icmp.o devinet.o af_inet.o igmp.o \
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
new file mode 100644
index 000000000000..343a890bd617
--- /dev/null
+++ b/net/ipv4/inet_hashtables.c
@@ -0,0 +1,51 @@
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Generic INET transport hashtables
+ *
+ * Authors:	Lotsa people, from code originally in tcp
+ *
+ *	This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/slab.h>
+
+#include <net/inet_hashtables.h>
+
+/*
+ * Allocate and initialize a new local port bind bucket.
+ * The bindhash mutex for snum's hash chain must be held here.
+ */
+struct inet_bind_bucket *inet_bind_bucket_create(kmem_cache_t *cachep,
+						 struct inet_bind_hashbucket *head,
+						 const unsigned short snum)
+{
+	struct inet_bind_bucket *tb = kmem_cache_alloc(cachep, SLAB_ATOMIC);
+
+	if (tb != NULL) {
+		tb->port      = snum;
+		tb->fastreuse = 0;
+		INIT_HLIST_HEAD(&tb->owners);
+		hlist_add_head(&tb->node, &head->chain);
+	}
+	return tb;
+}
+
+EXPORT_SYMBOL(inet_bind_bucket_create);
+
+/*
+ * Caller must hold hashbucket lock for this tb with local BH disabled
+ */
+void inet_bind_bucket_destroy(kmem_cache_t *cachep, struct inet_bind_bucket *tb)
+{
+	if (hlist_empty(&tb->owners)) {
+		__hlist_del(&tb->node);
+		kmem_cache_free(cachep, tb);
+	}
+}
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 4138630556e3..58e36ed88f25 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -104,32 +104,6 @@ struct inet_hashinfo __cacheline_aligned tcp_hashinfo = {
 int sysctl_local_port_range[2] = { 1024, 4999 };
 int tcp_port_rover = 1024 - 1;
 
-/* Allocate and initialize a new local port bind bucket.
- * The bindhash mutex for snum's hash chain must be held here.
- */
-struct inet_bind_bucket *inet_bind_bucket_create(kmem_cache_t *cachep,
-						 struct inet_bind_hashbucket *head,
-						 const unsigned short snum)
-{
-	struct inet_bind_bucket *tb = kmem_cache_alloc(cachep, SLAB_ATOMIC);
-	if (tb) {
-		tb->port = snum;
-		tb->fastreuse = 0;
-		INIT_HLIST_HEAD(&tb->owners);
-		hlist_add_head(&tb->node, &head->chain);
-	}
-	return tb;
-}
-
-/* Caller must hold hashbucket lock for this tb with local BH disabled */
-void inet_bind_bucket_destroy(kmem_cache_t *cachep, struct inet_bind_bucket *tb)
-{
-	if (hlist_empty(&tb->owners)) {
-		__hlist_del(&tb->node);
-		kmem_cache_free(cachep, tb);
-	}
-}
-
 /* Caller must disable local BH processing. */
 static __inline__ void __tcp_inherit_port(struct sock *sk, struct sock *child)
 {