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| author | Jon Maloy <jon.maloy@ericsson.com> | 2017-10-13 11:04:29 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-13 08:46:01 -0700 |
| commit | 5b8dddb63769587badc50725ec9857caaeba4de0 (patch) | |
| tree | ed36b50ef06a7162d3b71ccbb54fbf3236227562 /net/tipc/msg.h | |
| parent | ee106d7f942dabce1352e01c6fe9ca4a720c2331 (diff) | |
| download | lwn-5b8dddb63769587badc50725ec9857caaeba4de0.tar.gz lwn-5b8dddb63769587badc50725ec9857caaeba4de0.zip | |
tipc: introduce group multicast messaging
The previously introduced message transport to all group members is
based on the tipc multicast service, but is logically a broadcast
service within the group, and that is what we call it.
We now add functionality for sending messages to all group members
having a certain identity. Correspondingly, we call this feature 'group
multicast'. The service is using unicast when only one destination is
found, otherwise it will use the bearer broadcast service to transfer
the messages. In the latter case, the receiving members filter arriving
messages by looking at the intended destination instance. If there is
no match, the message will be dropped, while still being considered
received and read as seen by the flow control mechanism.
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/msg.h')
| -rw-r--r-- | net/tipc/msg.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/net/tipc/msg.h b/net/tipc/msg.h index f5033f4a7951..d6f98215267e 100644 --- a/net/tipc/msg.h +++ b/net/tipc/msg.h @@ -67,7 +67,8 @@ struct plist; #define TIPC_DIRECT_MSG 3 #define TIPC_GRP_MEMBER_EVT 4 #define TIPC_GRP_BCAST_MSG 5 -#define TIPC_GRP_UCAST_MSG 6 +#define TIPC_GRP_MCAST_MSG 6 +#define TIPC_GRP_UCAST_MSG 7 /* * Internal message users @@ -195,6 +196,11 @@ static inline u32 msg_size(struct tipc_msg *m) return msg_bits(m, 0, 0, 0x1ffff); } +static inline u32 msg_blocks(struct tipc_msg *m) +{ + return (msg_size(m) / 1024) + 1; +} + static inline u32 msg_data_sz(struct tipc_msg *m) { return msg_size(m) - msg_hdr_sz(m); @@ -279,7 +285,8 @@ static inline u32 msg_mcast(struct tipc_msg *m) { int mtyp = msg_type(m); - return ((mtyp == TIPC_MCAST_MSG) || (mtyp == TIPC_GRP_BCAST_MSG)); + return ((mtyp == TIPC_MCAST_MSG) || (mtyp == TIPC_GRP_BCAST_MSG) || + (mtyp == TIPC_GRP_MCAST_MSG)); } static inline u32 msg_connected(struct tipc_msg *m) |