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authorJon Maloy <jon.maloy@ericsson.com>2018-01-08 21:03:30 +0100
committerDavid S. Miller <davem@davemloft.net>2018-01-09 12:35:58 -0500
commit232d07b74a33b9f5d48516dc1d8ce41723ada593 (patch)
tree04a2df7d400b7aa4fbb0028d033bbace6e0ebdcc /net/tipc/name_table.h
parent8348500f80d5660af29c475e1f15d412d83564c9 (diff)
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/name_table.h')
-rw-r--r--net/tipc/name_table.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/tipc/name_table.h b/net/tipc/name_table.h
index 73a148c85c15..b595d8aa00f0 100644
--- a/net/tipc/name_table.h
+++ b/net/tipc/name_table.h
@@ -100,8 +100,8 @@ struct name_table {
int tipc_nl_name_table_dump(struct sk_buff *skb, struct netlink_callback *cb);
u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance, u32 *node);
-int tipc_nametbl_mc_translate(struct net *net, u32 type, u32 lower, u32 upper,
- u32 limit, struct list_head *dports);
+int tipc_nametbl_mc_lookup(struct net *net, u32 type, u32 lower, u32 upper,
+ u32 scope, bool exact, struct list_head *dports);
void tipc_nametbl_build_group(struct net *net, struct tipc_group *grp,
u32 type, u32 domain);
void tipc_nametbl_lookup_dst_nodes(struct net *net, u32 type, u32 lower,