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Regarding Intel Tofino P4_16 Register read/write

  • As per the Tofino Native Architecture, we can define up to four separate RegisterActions for a single Register extern, but only one RegisterAction may be executed per packet for a given Register.  
  • For my code, I have to read from multiple registers and write to those registers. But due to the above restriction, I cannot read and write in one go.
  • The solution is to resubmit the packet. It would have been fine for me if resubmission happened only in some cases. But in my case, every packet has to be resubmitted.
  • Is there any other efficient way to do the above read/write task?



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2 Replies
Super User

One post is enough.  Stay with your other post:


Doc (not an Intel employee or contractor)
[Maybe Windows 12 will be better]

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Hello Divya03, 

Thank you for posting in Intel Ethernet Communities. 

We regret to inform you that your query is out of our scope and we have a specific team who handles this kind of request. Kindly click the link below to contact the concerned team for further assistance. or

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Please also be informed that we will now close this request. Just feel free to post a new question if you may have any other inquiry regarding Ethernet products in the future as this thread will no longer be monitored.

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Best regards,

Crisselle C.

Intel Customer Support

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