[TIPC] Initial merge

TIPC (Transparent Inter Process Communication) is a protocol designed for
intra cluster communication. For more information see
http://tipc.sourceforge.net

Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>

1 files changed, 166 insertions, 0 deletions

diff --git a/net/tipc/zone.c b/net/tipc/zone.c
new file mode 100644
index 00000000000..336eebb7bf5
--- /dev/null
+++ b/net/tipc/zone.c
@@ -0,0 +1,166 @@
+/*
+ * net/tipc/zone.c: TIPC zone management routines
+ * 
+ * Copyright (c) 2003-2005, Ericsson Research Canada
+ * Copyright (c) 2005, Wind River Systems
+ * Copyright (c) 2005-2006, Ericsson AB
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * Neither the names of the copyright holders nor the names of its 
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "core.h"
+#include "zone.h"
+#include "net.h"
+#include "addr.h"
+#include "node_subscr.h"
+#include "cluster.h"
+#include "node.h"
+
+struct _zone *zone_create(u32 addr)
+{
+	struct _zone *z_ptr = 0;
+	u32 z_num;
+
+	if (!addr_domain_valid(addr))
+		return 0;
+
+	z_ptr = (struct _zone *)kmalloc(sizeof(*z_ptr), GFP_ATOMIC);
+	if (z_ptr != NULL) {
+		memset(z_ptr, 0, sizeof(*z_ptr));
+		z_num = tipc_zone(addr);
+		z_ptr->addr = tipc_addr(z_num, 0, 0);
+		net.zones[z_num] = z_ptr;
+	}
+	return z_ptr;
+}
+
+void zone_delete(struct _zone *z_ptr)
+{
+	u32 c_num;
+
+	if (!z_ptr)
+		return;
+	for (c_num = 1; c_num <= tipc_max_clusters; c_num++) {
+		cluster_delete(z_ptr->clusters[c_num]);
+	}
+	kfree(z_ptr);
+}
+
+void zone_attach_cluster(struct _zone *z_ptr, struct cluster *c_ptr)
+{
+	u32 c_num = tipc_cluster(c_ptr->addr);
+
+	assert(c_ptr->addr);
+	assert(c_num <= tipc_max_clusters);
+	assert(z_ptr->clusters[c_num] == 0);
+	z_ptr->clusters[c_num] = c_ptr;
+}
+
+void zone_remove_as_router(struct _zone *z_ptr, u32 router)
+{
+	u32 c_num;
+
+	for (c_num = 1; c_num <= tipc_max_clusters; c_num++) {
+		if (z_ptr->clusters[c_num]) {
+			cluster_remove_as_router(z_ptr->clusters[c_num], 
+						 router);
+		}
+	}
+}
+
+void zone_send_external_routes(struct _zone *z_ptr, u32 dest)
+{
+	u32 c_num;
+
+	for (c_num = 1; c_num <= tipc_max_clusters; c_num++) {
+		if (z_ptr->clusters[c_num]) {
+			if (in_own_cluster(z_ptr->addr))
+				continue;
+			cluster_send_ext_routes(z_ptr->clusters[c_num], dest);
+		}
+	}
+}
+
+struct node *zone_select_remote_node(struct _zone *z_ptr, u32 addr, u32 ref)
+{
+	struct cluster *c_ptr;
+	struct node *n_ptr;
+	u32 c_num;
+
+	if (!z_ptr)
+		return 0;
+	c_ptr = z_ptr->clusters[tipc_cluster(addr)];
+	if (!c_ptr)
+		return 0;
+	n_ptr = cluster_select_node(c_ptr, ref);
+	if (n_ptr)
+		return n_ptr;
+
+	/* Links to any other clusters within this zone ? */
+	for (c_num = 1; c_num <= tipc_max_clusters; c_num++) {
+		c_ptr = z_ptr->clusters[c_num];
+		if (!c_ptr)
+			return 0;
+		n_ptr = cluster_select_node(c_ptr, ref);
+		if (n_ptr)
+			return n_ptr;
+	}
+	return 0;
+}
+
+u32 zone_select_router(struct _zone *z_ptr, u32 addr, u32 ref)
+{
+	struct cluster *c_ptr;
+	u32 c_num;
+	u32 router;
+
+	if (!z_ptr)
+		return 0;
+	c_ptr = z_ptr->clusters[tipc_cluster(addr)];
+	router = c_ptr ? cluster_select_router(c_ptr, ref) : 0;
+	if (router)
+		return router;
+
+	/* Links to any other clusters within the zone? */
+	for (c_num = 1; c_num <= tipc_max_clusters; c_num++) {
+		c_ptr = z_ptr->clusters[c_num];
+		router = c_ptr ? cluster_select_router(c_ptr, ref) : 0;
+		if (router)
+			return router;
+	}
+	return 0;
+}
+
+
+u32 zone_next_node(u32 addr)
+{
+	struct cluster *c_ptr = cluster_find(addr);
+
+	if (c_ptr)
+		return cluster_next_node(c_ptr, addr);
+	return 0;
+}
+