In case of back pressure we can not send messages quick enough
and will drop messages. Add a counter so we can count how often
this happened per link/linkset. The SCTP M2UA code is not changed
as we don't have a link in the hands and adding it is too risky
without tests (not all M2UA have a link index so some might not
have a link).
Holger Hans Peter Freyther2015-10-04 15:24:27 +02:00