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authorJon Paul Maloy <jon.maloy@ericsson.com>2015-10-22 15:51:40 +0300
committerDavid S. Miller <davem@davemloft.net>2015-10-24 16:56:35 +0300
commitfd556f209af53b9cdc45df8c467feb235376c4df (patch)
treeabca98757b551a23d08dd80ca3b72a1d3ac7a564 /net/tipc/core.h
parent2f566124570625c29c3fd79bac4d9cd97c0c31a1 (diff)
downloadlinux-fd556f209af53b9cdc45df8c467feb235376c4df.tar.xz
tipc: introduce capability bit for broadcast synchronization
Until now, we have tried to support both the newer, dedicated broadcast synchronization mechanism along with the older, less safe, RESET_MSG/ ACTIVATE_MSG based one. The latter method has turned out to be a hazard in a highly dynamic cluster, so we find it safer to disable it completely when we find that the former mechanism is supported by the peer node. For this purpose, we now introduce a new capabability bit, TIPC_BCAST_SYNCH, to inform any peer nodes that dedicated broadcast syncronization is supported by the present node. The new bit is conveyed between peers in the 'capabilities' field of neighbor discovery messages. Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Reviewed-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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