2 * net/tipc/node_subscr.c: TIPC "node down" subscription handling
4 * Copyright (c) 2003-2005, Ericsson Research Canada
5 * Copyright (c) 2005, Wind River Systems
6 * Copyright (c) 2005-2006, Ericsson AB
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36 #include "node_subscr.h"
41 * nodesub_subscribe - create "node down" subscription for specified node
44 void nodesub_subscribe(struct node_subscr *node_sub, u32 addr,
45 void *usr_handle, net_ev_handler handle_down)
48 if (addr == tipc_own_addr)
50 if (!addr_node_valid(addr)) {
51 warn("node_subscr with illegal %x\n", addr);
55 node_sub->handle_node_down = handle_down;
56 node_sub->usr_handle = usr_handle;
57 node_sub->node = node_find(addr);
58 assert(node_sub->node);
59 node_lock(node_sub->node);
60 list_add_tail(&node_sub->nodesub_list, &node_sub->node->nsub);
61 node_unlock(node_sub->node);
65 * nodesub_unsubscribe - cancel "node down" subscription (if any)
68 void nodesub_unsubscribe(struct node_subscr *node_sub)
73 node_lock(node_sub->node);
74 list_del_init(&node_sub->nodesub_list);
75 node_unlock(node_sub->node);