Initial import of modified Linux 2.6.28 tree

Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y

1 files changed, 173 insertions, 0 deletions

diff --git a/net/tipc/zone.c b/net/tipc/zone.c
new file mode 100644
index 0000000..2c01ba2
--- /dev/null
+++ b/net/tipc/zone.c
@@ -0,0 +1,173 @@
+/*
+ * net/tipc/zone.c: TIPC zone management routines
+ *
+ * Copyright (c) 2000-2006, Ericsson AB
+ * Copyright (c) 2005, Wind River Systems
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. 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.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * 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 *tipc_zone_create(u32 addr)
+{
+	struct _zone *z_ptr;
+	u32 z_num;
+
+	if (!tipc_addr_domain_valid(addr)) {
+		err("Zone creation failed, invalid domain 0x%x\n", addr);
+		return NULL;
+	}
+
+	z_ptr = kzalloc(sizeof(*z_ptr), GFP_ATOMIC);
+	if (!z_ptr) {
+		warn("Zone creation failed, insufficient memory\n");
+		return NULL;
+	}
+
+	z_num = tipc_zone(addr);
+	z_ptr->addr = tipc_addr(z_num, 0, 0);
+	tipc_net.zones[z_num] = z_ptr;
+	return z_ptr;
+}
+
+void tipc_zone_delete(struct _zone *z_ptr)
+{
+	u32 c_num;
+
+	if (!z_ptr)
+		return;
+	for (c_num = 1; c_num <= tipc_max_clusters; c_num++) {
+		tipc_cltr_delete(z_ptr->clusters[c_num]);
+	}
+	kfree(z_ptr);
+}
+
+void tipc_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] == NULL);
+	z_ptr->clusters[c_num] = c_ptr;
+}
+
+void tipc_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]) {
+			tipc_cltr_remove_as_router(z_ptr->clusters[c_num],
+						   router);
+		}
+	}
+}
+
+void tipc_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;
+			tipc_cltr_send_ext_routes(z_ptr->clusters[c_num], dest);
+		}
+	}
+}
+
+struct tipc_node *tipc_zone_select_remote_node(struct _zone *z_ptr, u32 addr, u32 ref)
+{
+	struct cluster *c_ptr;
+	struct tipc_node *n_ptr;
+	u32 c_num;
+
+	if (!z_ptr)
+		return NULL;
+	c_ptr = z_ptr->clusters[tipc_cluster(addr)];
+	if (!c_ptr)
+		return NULL;
+	n_ptr = tipc_cltr_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 NULL;
+		n_ptr = tipc_cltr_select_node(c_ptr, ref);
+		if (n_ptr)
+			return n_ptr;
+	}
+	return NULL;
+}
+
+u32 tipc_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 ? tipc_cltr_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 ? tipc_cltr_select_router(c_ptr, ref) : 0;
+		if (router)
+			return router;
+	}
+	return 0;
+}
+
+
+u32 tipc_zone_next_node(u32 addr)
+{
+	struct cluster *c_ptr = tipc_cltr_find(addr);
+
+	if (c_ptr)
+		return tipc_cltr_next_node(c_ptr, addr);
+	return 0;
+}
+