netdev - Re: [PATCH v5 bpf-next 10/24] xsk: add new netlink attribute dedicated for ZC max frags

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Date: Mon, 10 Jul 2023 18:09:28 -0700
From: Alexei Starovoitov <alexei.starovoitov@...il.com>
To: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
Cc: bpf <bpf@...r.kernel.org>, Alexei Starovoitov <ast@...nel.org>, 
	Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>, 
	Network Development <netdev@...r.kernel.org>, "Karlsson, Magnus" <magnus.karlsson@...el.com>, 
	Björn Töpel <bjorn@...nel.org>, 
	"Sarkar, Tirthendu" <tirthendu.sarkar@...el.com>, Simon Horman <simon.horman@...igine.com>, 
	Toke Høiland-Jørgensen <toke@...nel.org>
Subject: Re: [PATCH v5 bpf-next 10/24] xsk: add new netlink attribute
 dedicated for ZC max frags

On Thu, Jul 6, 2023 at 1:47 PM Maciej Fijalkowski
<maciej.fijalkowski@...el.com> wrote:
>
> Introduce new netlink attribute NETDEV_A_DEV_XDP_ZC_MAX_SEGS that will
> carry maximum fragments that underlying ZC driver is able to handle on
> TX side. It is going to be included in netlink response only when driver
> supports ZC. Any value higher than 1 implies multi-buffer ZC support on
> underlying device.
>
> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com>

I suspect something in this patch makes XDP bonding test fail.
See BPF CI.

I can reproduce the failure locally as well.
test_progs -t bond
works without the series and fails with them.