linux/net/tipc/zone.c
Per Liden 593a5f22d8 [TIPC] More updates of file headers
Updated copyright notice to include the year the file was
actually created. Information about file creation dates
was extracted from the files in the old CVS repository
at tipc.sourceforge.net.

Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>
2006-01-12 14:06:39 -08:00

170 lines
4.4 KiB
C

/*
* 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;
}