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| author | Jon Paul Maloy <jon.maloy@ericsson.com> | 2015-10-22 08:51:40 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-10-24 06:56:35 -0700 |
| commit | fd556f209af53b9cdc45df8c467feb235376c4df (patch) | |
| tree | abca98757b551a23d08dd80ca3b72a1d3ac7a564 /net/tipc/node.h | |
| parent | 2f566124570625c29c3fd79bac4d9cd97c0c31a1 (diff) | |
| download | linux-stable-fd556f209af53b9cdc45df8c467feb235376c4df.tar.gz linux-stable-fd556f209af53b9cdc45df8c467feb235376c4df.tar.bz2 linux-stable-fd556f209af53b9cdc45df8c467feb235376c4df.zip | |
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>
Diffstat (limited to 'net/tipc/node.h')
| -rw-r--r-- | net/tipc/node.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/tipc/node.h b/net/tipc/node.h index 344b3e7594fd..1465774ad726 100644 --- a/net/tipc/node.h +++ b/net/tipc/node.h @@ -62,6 +62,14 @@ enum { TIPC_BCAST_RESET = (1 << 10) }; +/* Optional capabilities supported by this code version + */ +enum { + TIPC_BCAST_SYNCH = (1 << 1) +}; + +#define TIPC_NODE_CAPABILITIES TIPC_BCAST_SYNCH + /** * struct tipc_node_bclink - TIPC node bclink structure * @acked: sequence # of last outbound b'cast message acknowledged by node |