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/*
* net/tipc/cluster.c: TIPC cluster 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 "cluster.h"
#include "link.h"
struct tipc_node **tipc_local_nodes = NULL;
struct tipc_node_map tipc_cltr_bcast_nodes = {0,{0,}};
struct cluster *tipc_cltr_create(u32 addr)
{
struct cluster *c_ptr;
int max_nodes;
c_ptr = kzalloc(sizeof(*c_ptr), GFP_ATOMIC);
if (c_ptr == NULL) {
warn("Cluster creation failure, no memory\n");
return NULL;
}
c_ptr->addr = tipc_addr(tipc_zone(addr), tipc_cluster(addr), 0);
max_nodes = tipc_max_nodes + 1;
c_ptr->nodes = kcalloc(max_nodes + 1, sizeof(void*), GFP_ATOMIC);
if (c_ptr->nodes == NULL) {
warn("Cluster creation failure, no memory for node area\n");
kfree(c_ptr);
return NULL;
}
tipc_local_nodes = c_ptr->nodes;
c_ptr->highest_node = 0;
tipc_net.clusters[1] = c_ptr;
return c_ptr;
}
void tipc_cltr_delete(struct cluster *c_ptr)
{
u32 n_num;
if (!c_ptr)
return;
for (n_num = 1; n_num <= c_ptr->highest_node; n_num++) {
tipc_node_delete(c_ptr->nodes[n_num]);
}
kfree(c_ptr->nodes);
kfree(c_ptr);
}
void tipc_cltr_attach_node(struct cluster *c_ptr, struct tipc_node *n_ptr)
{
u32 n_num = tipc_node(n_ptr->addr);
u32 max_n_num = tipc_max_nodes;
assert(n_num > 0);
assert(n_num <= max_n_num);
assert(c_ptr->nodes[n_num] == NULL);
c_ptr->nodes[n_num] = n_ptr;
if (n_num > c_ptr->highest_node)
c_ptr->highest_node = n_num;
}
/**
* tipc_cltr_broadcast - broadcast message to all nodes within cluster
*/
void tipc_cltr_broadcast(struct sk_buff *buf)
{
struct sk_buff *buf_copy;
struct cluster *c_ptr;
struct tipc_node *n_ptr;
u32 n_num;
if (tipc_mode == TIPC_NET_MODE) {
c_ptr = tipc_cltr_find(tipc_own_addr);
/* Send to nodes */
for (n_num = 1; n_num <= c_ptr->highest_node; n_num++) {
n_ptr = c_ptr->nodes[n_num];
if (n_ptr && tipc_node_has_active_links(n_ptr)) {
buf_copy = skb_copy(buf, GFP_ATOMIC);
if (buf_copy == NULL)
goto exit;
msg_set_destnode(buf_msg(buf_copy),
n_ptr->addr);
tipc_link_send(buf_copy, n_ptr->addr,
n_ptr->addr);
}
}
}
exit:
buf_discard(buf);
}
int tipc_cltr_init(void)
{
return tipc_cltr_create(tipc_own_addr) ? 0 : -ENOMEM;
}
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