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Message-ID: <167950085059.2796265.16405349421776056766.stgit@firesoul>
Date: Wed, 22 Mar 2023 17:01:12 +0100
From: Jesper Dangaard Brouer <brouer@...hat.com>
To: bpf@...r.kernel.org
Cc: Jesper Dangaard Brouer <brouer@...hat.com>, netdev@...r.kernel.org,
Stanislav Fomichev <sdf@...gle.com>, martin.lau@...nel.org,
ast@...nel.org, daniel@...earbox.net, alexandr.lobakin@...el.com,
larysa.zaremba@...el.com, xdp-hints@...-project.net,
anthony.l.nguyen@...el.com, yoong.siang.song@...el.com,
boon.leong.ong@...el.com, intel-wired-lan@...ts.osuosl.org,
pabeni@...hat.com, jesse.brandeburg@...el.com, kuba@...nel.org,
edumazet@...gle.com, john.fastabend@...il.com, hawk@...nel.org,
davem@...emloft.net
Subject: [PATCH bpf-next V3 0/6] XDP-hints kfuncs for Intel driver igc
Implemented XDP-hints metadata kfuncs for Intel driver igc.
Primarily used the tool in tools/testing/selftests/bpf/ xdp_hw_metadata,
when doing driver development of these features. Recommend other driver
developers to do the same. In the process xdp_hw_metadata was updated to
help assist development. I've documented my practical experience with igc
and tool here[1].
[1] https://github.com/xdp-project/xdp-project/blob/master/areas/hints/xdp_hints_kfuncs02_driver_igc.org
This patchset implement RX-hash as a simple u32 value (as this is the
current kfunc API), but my experience with RX-hash is that we will also
need to provide the Hash-type for this raw value to be useful to
BPF-developers. This will be addressed in followup work once this patchset
lands.
---
Jesper Dangaard Brouer (6):
igc: enable and fix RX hash usage by netstack
selftests/bpf: xdp_hw_metadata track more timestamps
selftests/bpf: xdp_hw_metadata RX hash return code info
igc: add igc_xdp_buff wrapper for xdp_buff in driver
igc: add XDP hints kfuncs for RX timestamp
igc: add XDP hints kfuncs for RX hash
drivers/net/ethernet/intel/igc/igc.h | 35 +++++++
drivers/net/ethernet/intel/igc/igc_main.c | 94 ++++++++++++++++---
.../selftests/bpf/progs/xdp_hw_metadata.c | 18 ++--
tools/testing/selftests/bpf/xdp_hw_metadata.c | 51 ++++++++--
tools/testing/selftests/bpf/xdp_metadata.h | 1 +
5 files changed, 176 insertions(+), 23 deletions(-)
--
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