tree ac8eb387c28f417ad0a0cd8f21487cbf58d2e680
parent 7aa13e68980cd69e2933e3a22d296824f2d2331f
author Daniele Moro <daniele@opennetworking.org> 1621255771 +0200
committer Daniele Moro <daniele@opennetworking.org> 1621346324 +0200

Ensure P4Runtime byte strings are padded to their bit width

The P4Runtime server may send canonical byte strings (i.e.,
non-padded byte strings).
In ONOS we ensure, in the codecs, that all byte strings are
padded to match the model (P4Info) bit width. In this way,
we provide read-write symmetry inside ONOS.
ONOS always pads byte strings when sending messages to the
P4Runtime server.
This patch doesn't enforce read-write symmetry between
P4Runtime client and server on the wire.

N.B.: the current padding implementation works ONLY when
using non-negative integer.

Change-Id: I9f8e43de015bd0929dd543d7688c8e71bf5fe98d