> On Apr 21, 2020, at 10:50 PM, Alireza Sanaee <[email protected]> wrote:
>
> 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
Alireza,
What you seek is documented.
https://doc.dpdk.org/dts/test_plans/link_flowctrl_test_plan.html
<https://doc.dpdk.org/dts/test_plans/link_flowctrl_test_plan.html>
testpmd> set mac_ctrl_frame_fwd on
Not all PMDs support this setting, though igb and i40e do.
