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authorJon Paul Maloy <jon.maloy@ericsson.com>2017-01-18 21:50:52 +0300
committerDavid S. Miller <davem@davemloft.net>2017-01-20 20:10:17 +0300
commita853e4c6d0843729e1f25a7a7beff168e1dd7420 (patch)
tree3725ef60bc42bf5c06873fd2962f37bb2ecf0ba1 /net/tipc/msg.h
parent2ae0b8af1fe35ddaa2e46704ae31a2f9cac0349d (diff)
downloadlinux-a853e4c6d0843729e1f25a7a7beff168e1dd7420.tar.xz
tipc: introduce replicast as transport option for multicast
TIPC multicast messages are currently carried over a reliable 'broadcast link', making use of the underlying media's ability to transport packets as L2 broadcast or IP multicast to all nodes in the cluster. When the used bearer is lacking that ability, we can instead emulate the broadcast service by replicating and sending the packets over as many unicast links as needed to reach all identified destinations. We now introduce a new TIPC link-level 'replicast' service that does this. Reviewed-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com> 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/msg.h')
-rw-r--r--net/tipc/msg.h9
1 files changed, 4 insertions, 5 deletions
diff --git a/net/tipc/msg.h b/net/tipc/msg.h
index f07b51e3f6f1..c843fd2bc48d 100644
--- a/net/tipc/msg.h
+++ b/net/tipc/msg.h
@@ -631,14 +631,11 @@ static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id)
static inline u32 msg_link_selector(struct tipc_msg *m)
{
+ if (msg_user(m) == MSG_FRAGMENTER)
+ m = (void *)msg_data(m);
return msg_bits(m, 4, 0, 1);
}
-static inline void msg_set_link_selector(struct tipc_msg *m, u32 n)
-{
- msg_set_bits(m, 4, 0, 1, n);
-}
-
/*
* Word 5
*/
@@ -835,6 +832,8 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
int offset, int dsz, int mtu, struct sk_buff_head *list);
bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, int *err);
bool tipc_msg_reassemble(struct sk_buff_head *list, struct sk_buff_head *rcvq);
+bool tipc_msg_pskb_copy(u32 dst, struct sk_buff_head *msg,
+ struct sk_buff_head *cpy);
void __tipc_skb_queue_sorted(struct sk_buff_head *list, u16 seqno,
struct sk_buff *skb);