[dpdk-users] Capturing Pause Frames in DPDK Applications

[Alireza Sanaee <sarsanaee@gmail.com>]

Dear all,

I'm wondering that if there is any chances to pass pause frames through 
a NIC and receive it in the DPDK application? Is there any ideas to 
practically make this modification?

I have read that Pause Frames are being consumed at ASIC level so it 
would not be possible to pass the frame to CPU. In that case, I'm just 
thinking of creating an artificial pause frame on arrival of a real 
Ethernet pause frame and push the artificial one to software, it might 
be crazy though but still capturing arrival event of an Ethernet pause 
frame remains a challenge.

In a DPDK less scenario, I'm thinking if a packet sniffer like Wireshark 
can capture a pause frame, then it means NIC is sending pause frames to 
higher layers I believe. Likewise in the DPDK scenario I should be able 
to see the pause frames maybe in the PMD driver?

Thanks,
Alireza