tree b9a84fc55d001ae8ea70d8d4120fa348c12a0c4c
parent c1fa8f2f0bc5ffb42c48156f04c04394dfa5cfad
author Carmelo Cascone <carmelo@opennetworking.org> 1536697598 -0700
committer Carmelo Cascone <carmelo@opennetworking.org> 1538783118 +0000

Do not insert or delete default action entries in P4Runtime

Spec says:
the default entry for a table is always set. It can be set at
compile-time by the P4 programmer - or defaults to NoAction (which is a
no-op) otherwise - and assuming it is not declared as const, can be
modified by the P4Runtime client. Because the default entry is always
set, we do not allow INSERT and DELETE updates on the default entry and
the P4Runtime server must return an INVALID_ARGUMENT error code if the
client attempts one.

With this patch we convert insert or delete operations into modify ones
(unless specified by a driver property, to support non-compliant devices).
For delete, we use the interpreter to suggest a default action that is
the same as the one when the pipeline was originally deployed.

Also, we introduce the capability of synchronizing the device mirror
with the device state.

Change-Id: I3758fc11780eb0f1cf4ed5a295bd98b54b182e29