tree 48a2abb9c3783e64a93770a5ea43889d9445cd23
parent 05c985436dfe81ab784251a54dd69be5b2dea98a
author Jon Paul Maloy <jon.maloy@ericsson.com> 1432633219 -0400
committer David S. Miller <davem@davemloft.net> 1432683783 -0400

tipc: fix bug in link protocol message create function

In commit dd3f9e70f59f43a5712eba9cf3ee4f1e6999540c
("tipc: add packet sequence number at instant of transmission") we
made a change with the consequence that packets in the link backlog
queue don't contain valid sequence numbers.

However, when we create a link protocol message, we still use the
sequence number of the first packet in the backlog, if there is any,
as "next_sent" indicator in the message. This may entail unnecessary
retransissions or stale packet transmission when there is very low
traffic on the link.

This commit fixes this issue by only using the current value of
tipc_link::snd_nxt as indicator.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>