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Diffstat (limited to 'net/tipc/zone.c')
| -rw-r--r-- | net/tipc/zone.c | 169 |
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..7c11f7f83a21 --- /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 *tipc_zone_create(u32 addr) +{ + struct _zone *z_ptr = 0; + u32 z_num; + + if (!tipc_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); + 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] == 0); + 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 node *tipc_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 = 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 0; + n_ptr = tipc_cltr_select_node(c_ptr, ref); + if (n_ptr) + return n_ptr; + } + return 0; +} + +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; +} + |