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| author |   Jon Maloy <jon.maloy@ericsson.com> | 2018-01-08 21:03:30 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-01-09 12:35:58 -0500 |
| commit | 232d07b74a33b9f5d48516dc1d8ce41723ada593 (patch) | |
| tree | 04a2df7d400b7aa4fbb0028d033bbace6e0ebdcc /net/tipc/server.h | |
| parent | tipc: add option to suppress PUBLISH events for pre-existing publications (diff) | |
| download | linux-dev-232d07b74a33b9f5d48516dc1d8ce41723ada593.tar.xz linux-dev-232d07b74a33b9f5d48516dc1d8ce41723ada593.zip | |
tipc: improve groupcast scope handling
When a member joins a group, it also indicates a binding scope. This
makes it possible to create both node local groups, invisible to other
nodes, as well as cluster global groups, visible everywhere.
In order to avoid that different members end up having permanently
differing views of group size and memberhip, we must inhibit locally
and globally bound members from joining the same group.
We do this by using the binding scope as an additional separator between
groups. I.e., a member must ignore all membership events from sockets
using a different scope than itself, and all lookups for message
destinations must require an exact match between the message's lookup
scope and the potential target's binding scope.
Apart from making it possible to create local groups using the same
identity on different nodes, a side effect of this is that it now also
becomes possible to create a cluster global group with the same identity
across the same nodes, without interfering with the local groups.
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/server.h')
| -rw-r--r-- | net/tipc/server.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/tipc/server.h b/net/tipc/server.h index ea1effbff23e..17f49ee44cfd 100644 --- a/net/tipc/server.h +++ b/net/tipc/server.h @@ -41,6 +41,8 @@ #include <net/net_namespace.h> #define TIPC_SERVER_NAME_LEN 32 +#define TIPC_SUB_CLUSTER_SCOPE 0x20 +#define TIPC_SUB_NODE_SCOPE 0x40 #define TIPC_SUB_NO_STATUS 0x80 /** @@ -84,8 +86,8 @@ struct tipc_server { int tipc_conn_sendmsg(struct tipc_server *s, int conid, struct sockaddr_tipc *addr, void *data, size_t len); -bool tipc_topsrv_kern_subscr(struct net *net, u32 port, u32 type, - u32 filter, u32 lower, u32 upper, int *conid); +bool tipc_topsrv_kern_subscr(struct net *net, u32 port, u32 type, u32 lower, + u32 upper, u32 filter, int *conid); void tipc_topsrv_kern_unsubscr(struct net *net, int conid); /** |