[P4-arch] 7/10 meeting minutes: P4 Arch Design WG

Calin Cascaval cascaval at barefootnetworks.com
Thu Jul 13 02:02:15 EDT 2017

Courtesy of Andy Fingerhut, available at: https://github.com/p4lang/p4-spec/wiki/PSA-meeting-minutes:-Jul-10,-2017

P4 Arch Design WG
Scheduled: Jul 10, 2017, 13:30 to 15:00
Location: Stanford Campus: Packard 312
Invitees: ccascaval at barefootnetworks.com, p4-arch at lists.p4.org, dan.daly at intel.com
Dear all,

Please reserve time on your calendars for the P4 Arch WG recurring meeting:

Topic: P4 Architecture Design Group
Time: Jun 26, 2017 13:30 Pacific Time
Every two weeks until Sept 18, 2017.
Venue: Packard 312 on the Stanford Campus (https://forum.stanford.edu/visitors/directions/packard.php)
Refreshments will be served.
Dial in information:

Join from PC, Mac, Linux, iOS or Android: https://cornell.zoom.us/j/567864916

Or iPhone one-tap (US Toll):  +14086380968,,567864916# or +16465588656,,567864916#

Or Telephone:
    Dial: +1 408 638 0968 (US Toll) or +1 646 558 8656 (US Toll)
    Meeting ID: 567 864 916
    International numbers available: https://cornell.zoom.us/zoomconference?m=5LQ9l0ajXUCKyVo5fLYr6MAOhs205DtT

Or an H.323/SIP room system:
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Or Skype for Business (Lync):


We will discuss the following issues in the order they are listed:

Issues with proposals: need approval
- Parser value sets (https://github.com/p4lang/p4-spec/issues/337)
- Counting https://github.com/p4lang/p4-spec/issues/308, https://github.com/p4lang/p4-spec/issues/312
- Reject semantics (https://github.com/p4lang/p4-spec/issues/339)
- Write-only methods https://github.com/p4lang/p4-spec/issues/316
- Index out of bounds for counters, meters, and registers https://github.com/p4lang/p4-spec/issues/323
- Unspecified forwarding op behavior https://github.com/p4lang/p4-spec/issues/317
- Packet arrival time (https://github.com/p4lang/p4-spec/issues/336)
    - and more generally handling of timestamps
- Multiple classes of service exposed in PRE (https://github.com/p4lang/p4-spec/issues/334)
- Queue lengths (https://github.com/p4lang/p4-spec/issues/335)
    - and more generally exposing internal structures
- Meter and register initial state https://github.com/p4lang/p4-spec/issues/324
    - Meters: GREEN or RED?
    - Registers: 0
    - target specific

Issues that need a proposal:
- cpu port semantics https://github.com/p4lang/p4-spec/issues/321
- clone and resubmit semantics https://github.com/p4lang/p4-spec/issues/320

Thanks, Calin

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