Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git

Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 169 insertions, 0 deletions

diff --git a/net/tipc/zone.c b/net/tipc/zone.c
new file mode 100644
index 000000000000..4eaef662d568
--- /dev/null
+++ b/net/tipc/zone.c
@@ -0,0 +1,169 @@
+/*
+ * 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 *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;
+}
+