netdev - Re: [PATCH bpf-next v4 00/17] AF_XDP infrastructure improvements and mlx5e support

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Message-ID: <20190612134805.3bf4ea25@cakuba.netronome.com>
Date:   Wed, 12 Jun 2019 13:48:05 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Maxim Mikityanskiy <maximmi@...lanox.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Björn Töpel <bjorn.topel@...el.com>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Jonathan Lemon <bsd@...com>,
        Tariq Toukan <tariqt@...lanox.com>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Maciej Fijalkowski <maciejromanfijalkowski@...il.com>
Subject: Re: [PATCH bpf-next v4 00/17] AF_XDP infrastructure improvements
 and mlx5e support

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?

> 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.