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author | Per Liden <per.liden@nospam.ericsson.com> | 2006-01-02 19:04:38 +0100 |
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committer | David S. Miller <davem@sunset.davemloft.net> | 2006-01-12 14:06:31 -0800 |
commit | b97bf3fd8f6a16966d4f18983b2c40993ff937d4 (patch) | |
tree | 59959f8a0f3087455efdcb430846686f303c5991 /net/tipc/node_subscr.c | |
parent | 58cba4650a7a414eabd2b40cc9d8e45fcdf192d9 (diff) | |
download | kernel_samsung_tuna-b97bf3fd8f6a16966d4f18983b2c40993ff937d4.zip kernel_samsung_tuna-b97bf3fd8f6a16966d4f18983b2c40993ff937d4.tar.gz kernel_samsung_tuna-b97bf3fd8f6a16966d4f18983b2c40993ff937d4.tar.bz2 |
[TIPC] Initial merge
TIPC (Transparent Inter Process Communication) is a protocol designed for
intra cluster communication. For more information see
http://tipc.sourceforge.net
Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>
Diffstat (limited to 'net/tipc/node_subscr.c')
-rw-r--r-- | net/tipc/node_subscr.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/net/tipc/node_subscr.c b/net/tipc/node_subscr.c new file mode 100644 index 0000000..c38a3b0 --- /dev/null +++ b/net/tipc/node_subscr.c @@ -0,0 +1,76 @@ +/* + * net/tipc/node_subscr.c: TIPC "node down" subscription handling + * + * Copyright (c) 2003-2005, Ericsson Research Canada + * Copyright (c) 2005, Wind River Systems + * Copyright (c) 2005-2006, Ericsson AB + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * 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. + * 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. + * + * 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" + +/** + * nodesub_subscribe - create "node down" subscription for specified node + */ + +void nodesub_subscribe(struct node_subscr *node_sub, u32 addr, + void *usr_handle, net_ev_handler handle_down) +{ + node_sub->node = 0; + if (addr == tipc_own_addr) + return; + if (!addr_node_valid(addr)) { + warn("node_subscr with illegal %x\n", addr); + return; + } + + node_sub->handle_node_down = handle_down; + node_sub->usr_handle = usr_handle; + node_sub->node = node_find(addr); + assert(node_sub->node); + node_lock(node_sub->node); + list_add_tail(&node_sub->nodesub_list, &node_sub->node->nsub); + node_unlock(node_sub->node); +} + +/** + * nodesub_unsubscribe - cancel "node down" subscription (if any) + */ + +void nodesub_unsubscribe(struct node_subscr *node_sub) +{ + if (!node_sub->node) + return; + + node_lock(node_sub->node); + list_del_init(&node_sub->nodesub_list); + node_unlock(node_sub->node); +} |