[Drbd-dev] [PATCH 10/10] drbd: For protocol versions before 100, use mixed header versions

[Philipp Reisner]

From: Andreas Gruenbacher <agruen at linbit.com>

Previous versions of drbd are using version 80 headers for all packets
short enough for protocol 80.  They support both header versions in
worker context, but only version 80 headers in asynchronous context.
For backwards compatibility, continue to use version 80 headers for
short packets before protocol version 100.