On 2019-06-13 15:58, Björn Töpel wrote: > On Wed, 12 Jun 2019 at 22:49, Jakub Kicinski > <jakub.kicin...@netronome.com> wrote: >> >> On Wed, 12 Jun 2019 15:56:33 +0000, Maxim Mikityanskiy wrote: >>> UAPI is not changed, XSK RX queues are exposed to the kernel. The lower >>> half of the available amount of RX queues are regular queues, and the >>> upper half are XSK RX queues. >> >> If I have 32 queues enabled on the NIC and I install AF_XDP socket on >> queue 10, does the NIC now have 64 RQs, but only first 32 are in the >> normal RSS map? >> > > Additional, related, question to Jakub's: Say that I'd like to hijack > all 32 Rx queues of the NIC. I create 32 AF_XDP socket and attach them > in zero-copy mode to the device. What's the result?
There are 32 regular RX queues (0..31) and 32 XSK RX queues (32..63). If you want 32 zero-copy AF_XDP sockets, you can attach them to queues 32..63, and the regular traffic won't be affected at all. >>> The patch "xsk: Extend channels to support combined XSK/non-XSK >>> traffic" was dropped. The final patch was reworked accordingly. >> >> The final patches has 2k LoC, kind of hard to digest. You can also >> post the clean up patches separately, no need for large series here.
