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authorJon Paul Maloy <jon.maloy@ericsson.com>2015-10-22 15:51:41 +0300
committerDavid S. Miller <davem@davemloft.net>2015-10-24 16:56:37 +0300
commit5266698661401afc5e4a1a521cf9ba10724d10dd (patch)
treecf3d466a2d9982f403a689e8a0c819c7e3693bde /net/tipc/msg.h
parentfd556f209af53b9cdc45df8c467feb235376c4df (diff)
downloadlinux-5266698661401afc5e4a1a521cf9ba10724d10dd.tar.xz
tipc: let broadcast packet reception use new link receive function
The code path for receiving broadcast packets is currently distinct from the unicast path. This leads to unnecessary code and data duplication, something that can be avoided with some effort. We now introduce separate per-peer tipc_link instances for handling broadcast packet reception. Each receive link keeps a pointer to the common, single, broadcast link instance, and can hence handle release and retransmission of send buffers as if they belonged to the own instance. Furthermore, we let each unicast link instance keep a reference to both the pertaining broadcast receive link, and to the common send link. This makes it possible for the unicast links to easily access data for broadcast link synchronization, as well as for carrying acknowledges for received broadcast packets. 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/msg.h')
-rw-r--r--net/tipc/msg.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/tipc/msg.h b/net/tipc/msg.h
index fbf51fa1075d..55778a0aebf3 100644
--- a/net/tipc/msg.h
+++ b/net/tipc/msg.h
@@ -601,6 +601,11 @@ static inline u32 msg_last_bcast(struct tipc_msg *m)
return msg_bits(m, 4, 16, 0xffff);
}
+static inline u32 msg_bc_snd_nxt(struct tipc_msg *m)
+{
+ return msg_last_bcast(m) + 1;
+}
+
static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n)
{
msg_set_bits(m, 4, 16, 0xffff, n);