PSA: possibility to bypass egress?

[osinstom]

In the TNA architecture, there is a quite useful metadata field that gives us possibility to bypass egress packet processing:

https://github.com/barefootnetworks/Open-Tofino/blob/master/share/p4c/p4include/tofino.p4#L111

As far as I know, we cannot bypass egress in PSA , am I right? If so, is it considered to be added in upcoming PSA releases?

[jafingerhut]

The PSA specification does not define any capability to bypass egress processing for packets.

There are certainly many other differences between the PSA and TNA architectures besides that, too. There could be advantages to making them closer to each other in capabilities, and perhaps even in how those capabilities are accessed from a P4 program. It is not yet clear to me whether that would end up with PSA looking exactly like TNA, or something that is still distinct from TNA.