From: Mehdi Ben Hadj Khelifa <mehdi.benhadjkhelifa@gmail.com>
To: Jakub Sitnicki <jakub@cloudflare.com>
Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, donald.hunter@gmail.com,
andrew+netdev@lunn.ch, ast@kernel.org, daniel@iogearbox.net,
hawk@kernel.org, john.fastabend@gmail.com, matttbe@kernel.org,
chuck.lever@oracle.com, jdamato@fastly.com, skhawaja@google.com,
dw@davidwei.uk, mkarsten@uwaterloo.ca,
yoong.siang.song@intel.com, david.hunter.linux@gmail.com,
skhan@linuxfoundation.org, horms@kernel.org, sdf@fomichev.me,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
bpf@vger.kernel.org,
linux-kernel-mentees@lists.linuxfoundation.org
Subject: Re: [PATCH RFC 0/4] Add XDP RX queue index metadata via kfuncs
Date: Thu, 25 Sep 2025 11:54:59 +0100 [thread overview]
Message-ID: <0cddb596-a70b-48d4-9d8e-c6cb76abd9d2@gmail.com> (raw)
In-Reply-To: <87h5wq50l0.fsf@cloudflare.com>
On 9/25/25 10:43 AM, Jakub Sitnicki wrote:
> On Tue, Sep 23, 2025 at 10:00 PM +01, Mehdi Ben Hadj Khelifa wrote:
>> This patch series is intended to make a base for setting
>> queue_index in the xdp_rxq_info struct in bpf/cpumap.c to
>> the right index. Although that part I still didn't figure
>> out yet,I m searching for my guidance to do that as well
>> as for the correctness of the patches in this series.
>
> What is the use case/movtivation behind this work?
The goal of the work is to have xdp programs have the correct packet RX
queue index after being redirected through cpumap because currently the
queue_index gets unset or more accurately set to 0 as a default in
xdp_rxq_info. This is my current understanding.I still have to know how
I can propogate that HW hint from the NICs to the function where I need it.
Regards,
Mehdi
next prev parent reply other threads:[~2025-09-25 9:55 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-23 21:00 [PATCH RFC 0/4] Add XDP RX queue index metadata via kfuncs Mehdi Ben Hadj Khelifa
2025-09-23 20:45 ` Stanislav Fomichev
2025-09-24 10:40 ` Mehdi Ben Hadj Khelifa
2025-09-24 22:31 ` Stanislav Fomichev
2025-09-25 9:57 ` Mehdi Ben Hadj Khelifa
2025-09-26 6:42 ` Lorenzo Bianconi
2025-09-23 21:00 ` [PATCH RFC 1/4] netlink: specs: Add XDP RX queue index to XDP metadata Mehdi Ben Hadj Khelifa
2025-09-23 21:00 ` [PATCH RFC 2/4] net: xdp: Add xmo_rx_queue_index callback Mehdi Ben Hadj Khelifa
2025-09-23 21:00 ` [PATCH RFC 3/4] uapi: netdev: Add XDP RX queue index metadata flags Mehdi Ben Hadj Khelifa
2025-09-23 21:00 ` [PATCH RFC 4/4] net: veth: Implement RX queue index XDP hint Mehdi Ben Hadj Khelifa
2025-09-25 9:43 ` [PATCH RFC 0/4] Add XDP RX queue index metadata via kfuncs Jakub Sitnicki
2025-09-25 10:54 ` Mehdi Ben Hadj Khelifa [this message]
2025-09-25 10:18 ` Jakub Sitnicki
2025-09-25 11:28 ` Mehdi Ben Hadj Khelifa
2025-09-25 10:47 ` Jakub Sitnicki
2025-09-25 12:03 ` Mehdi Ben Hadj Khelifa
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