DASH Workgroup Community Update 1/9/2025
Kristina Moore
Hello DASH Community –Welcome Back thank you for your time last Wednesday!
In our first call in 2025 since we returned from the holidays, we covered both DASH Community and Behavioral Model work items we are targeting. Andy also covered work going on in the P4 Consortium. We are planning to frame out the FNIC concept document and create a PR to translate the requirements into .md format for publication. In addition, I plan to transition our existing user names/ lists to the Linux Foundation as time permits. We also have PRs underway re: development of the Behavioral Model upcoming Data Plane Application contributed by MSFT (specifically @Junhua Zhai and @Riff Jiang). Lastly, Synogate has offered to present their Packet Processing Pipeline proposal at a future date – thanks @Philipp Keydel and team!
In Summary
(full list below),
since the last Community call we have:
12 PRs/Issues completed
9 in ToDo
1 in Draft
15 in Progress (including all relevant GitHub repos)
7 Awaiting Review
For further reading, see
full meeting notes and follow-ups below in this thread.
Just a reminder that we would encourage/invite Community members to present to the Community (test runs or progress, new scenarios, etc…), just ‘r’ to let me know, or generate a PR in the repo.
Follow-up tasks:
- 128-bit Implementation (Maheswari)Transition mailing group to Linux Foundation (Kristina)
- Floating NIC documentation: convert FNIC presentation to .md and push to repo as a PR (Kristina)
Thank you for your time/contributions –
see you on 1/22/2025
With respect to
any of our DASH meetings - Community (Wednesdays), or Behavioral Model (Thursdays) –
please let me know if there are PRs, Q&A, or items you would like to discuss or present.
The DASH YouTube channel link is here to
subscribe / access WG content (and click the bell to receive notifications).
Meeting Title: SONiC-DASH-Workgroup Community Meeting #134
Attendees (9):
DASH Group to join: https://groups.google.com/g/sonic-dash
DASH-Test-Workgroup Group to join: https://groups.google.com/g/sonic-dash-test-workgroup
Linux Foundation list: https://lists.sonicfoundation.dev/g/SONiC-Dash
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Ahmed Guetari - F5 |
Alan Lo - Nvidia |
Murali Venkat - Cisco |
Mohammad Hanif - Broadcom |
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Andy Fingerhut - Cisco |
Kristina Moore - MSFT |
Riff Jiang - MSFT |
Swami Balasubramanian - Keysight |
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Henderson, Mark W - Intel |
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TL:DR DASH Community Notes 😊
Community Call Overview:
- Welcome back and highlight recent activity in the repository
Behavioral Model Group Updates and P4 Consortium
- Andy discussed the generalization of P4 programs accepted by BMV2, including the acceptance of general if statements inside actions
- Previously, general IF statements inside of actions were not allowed, leading to unnatural ways of writing code. This change, made in November and December, allows for more natural coding practices
- There have been small enhancements and a list of projects for students and hobbyists, and ongoing reviews/fixes by Intel and other contributors
- Future plans include adding features like add-on miss, though no set schedule
- Riff, JimmyZhai, and Shaofeng are working on an app to cover some gaps in the Behavioral Model. This work is ongoing, and more details are expected to be discussed in the next Behavioral Model meeting
DASH Repository Activity:
- Noted several pull requests and ongoing work, including support for 128-bit operations and API get/set attributes
- Merged the implementation of the API get-set attribute a couple of weeks ago
- JimmyZhai work on refactoring and J2 templates was highlighted
- Various fixes and enhancements were discussed, including production parameter support. Specifically addressing issues where P4 tables have multiple actions and parameters need to overlap
- DASH SONiC management tests; approvals have been received from NVIDIA and Vasundhara, waiting for Prince George to return
- Work with Mircea to integrate private link and other features into the test environment
Floating NIC Concept:
- Discussed documenting the Floating NIC concept introduced by Michal Zygmunt, with Kristina planning to take the first swing at the documentation
Data Plane App:
- Riff provided an update on the Data Plane App
SONiC and Resource Management:
- Andy had questions re: the handling of resource allocation failures and potential crashes. Mohammad and Riff explained the improvements in error handling and resource monitoring
DASH and CRM:
- Discussion on whether DASH adds new CRM capacity measurements to help stay away from resource limits on policies
Other:
- Murali mentioned approvals from NVIDIA for PMON PRs and coordination with Prince George
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Sticky for Links/Data: |
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DASH Groups to join to receive Invites, Meeting Notes, and Comms |
DASH: https://groups.google.com/g/sonic-dash DASH-Test-Workgroup Group: https://groups.google.com/g/sonic-dash-test-workgroup Linux Foundation list: https://lists.sonicfoundation.dev/g/SONiC-Dash |
If anyone knows other people who would like info re: our community, please have them joins these groups for receive Comms, etc… |
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Links to Recording |
Teams/Sharepoint:
DASH Community YouTube:
HA moved to SmartSwitch LF group |
1/09/2025 DASH Community Call; please request access via the link if you are not able to view/listen
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Azure DASH GitHub Repo: |
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https://github.com/sonic-net/DASH/blob/main/test/docs/dash-test-workflow-saithrift.md |
Ideal test workflow is here, converted to .md |
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SAI Thrift |
Client server needed for testing |
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P4 |
https://opennetworking.org/p4/ and https://p4.org/working-groups/ |
Open source, domain-specific programming language for network devices, specifying packet processing for data plane devices (switches, routers, NICs, filters, etc.) |
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PINS |
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PNA consortium spec |
An architecture describing the structure and common capabilities of network interface controller (NIC) devices which process packets transiting one or more interfaces
and a host system. |
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IPDK |
IPDK is an open source, vendor agnostic framework of drivers and APIs for infrastructure offload and management which runs on a CPU, IPU, DPU or switch. IPDK runs in Linux and uses a set of well-established tools such as DPDK and P4 to enable network virtualization. |
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bmv2 |
The second version of the reference P4 software switch, nicknamed bmv2 (for behavioral model version 2). The software switch is written in C++11. It takes as input a JSON file generated from your P4 program by a P4 compiler and interprets it to implement the packet-processing behavior specified by that P4 program |
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DPDK |
DPDK is the Data Plane Development Kit which consists of libraries to accelerate packet processing workloads running on a wide variety of CPU architectures. |
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Linux Foundation SmartSwitch |
https://lists.sonicfoundation.dev/g/sonic-smartswitch/calendar |
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Thank you again for your participation…
Kristina Moore MBA,
M.S., CISSP - Azure Core Principal PM / DASH
Office: 425-722-7720 Mobile: 425-876-2040 Email:
kri...@microsoft.com
DASH Group to join:
https://groups.google.com/g/sonic-dash
DASH-Test-Workgroup Group to join: https://groups.google.com/g/sonic-dash-test-workgroup
Linux Foundation: https://lists.sonicfoundation.dev/g/SONiC-Dash
