c430728526
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/*
|
|
* net/tipc/node_subscr.c: TIPC "node down" subscription handling
|
|
*
|
|
* Copyright (c) 1995-2006, 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 "dbg.h"
|
|
#include "node_subscr.h"
|
|
#include "node.h"
|
|
#include "addr.h"
|
|
|
|
/**
|
|
* tipc_nodesub_subscribe - create "node down" subscription for specified node
|
|
*/
|
|
|
|
void tipc_nodesub_subscribe(struct node_subscr *node_sub, u32 addr,
|
|
void *usr_handle, net_ev_handler handle_down)
|
|
{
|
|
if (addr == tipc_own_addr) {
|
|
node_sub->node = NULL;
|
|
return;
|
|
}
|
|
|
|
node_sub->node = tipc_node_find(addr);
|
|
if (!node_sub->node) {
|
|
warn("Node subscription rejected, unknown node 0x%x\n", addr);
|
|
return;
|
|
}
|
|
node_sub->handle_node_down = handle_down;
|
|
node_sub->usr_handle = usr_handle;
|
|
|
|
tipc_node_lock(node_sub->node);
|
|
list_add_tail(&node_sub->nodesub_list, &node_sub->node->nsub);
|
|
tipc_node_unlock(node_sub->node);
|
|
}
|
|
|
|
/**
|
|
* tipc_nodesub_unsubscribe - cancel "node down" subscription (if any)
|
|
*/
|
|
|
|
void tipc_nodesub_unsubscribe(struct node_subscr *node_sub)
|
|
{
|
|
if (!node_sub->node)
|
|
return;
|
|
|
|
tipc_node_lock(node_sub->node);
|
|
list_del_init(&node_sub->nodesub_list);
|
|
tipc_node_unlock(node_sub->node);
|
|
}
|