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From: Larysa Zaremba <larysa.zaremba@intel.com>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
	andrii@kernel.org, martin.lau@linux.dev, song@kernel.org,
	yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org,
	sdf@google.com, haoluo@google.com, jolsa@kernel.org,
	David Ahern <dsahern@gmail.com>, Jakub Kicinski <kuba@kernel.org>,
	Willem de Bruijn <willemb@google.com>,
	Jesper Dangaard Brouer <brouer@redhat.com>,
	Anatoly Burakov <anatoly.burakov@intel.com>,
	Alexander Lobakin <alexandr.lobakin@intel.com>,
	Magnus Karlsson <magnus.karlsson@gmail.com>,
	Maryam Tahhan <mtahhan@redhat.com>,
	xdp-hints@xdp-project.net, netdev@vger.kernel.org,
	Willem de Bruijn <willemdebruijn.kernel@gmail.com>,
	Simon Horman <simon.horman@corigine.com>
Subject: [xdp-hints] Re: [PATCH bpf-next v5 13/21] ice: Implement checksum hint
Date: Tue, 22 Aug 2023 11:07:06 +0200	[thread overview]
Message-ID: <ZOR6uoYKRPEKGKED@lincoln> (raw)
In-Reply-To: <20230817215826.sx7t6mipx7pajuzo@macbook-pro-8.dhcp.thefacebook.com>

On Thu, Aug 17, 2023 at 02:58:26PM -0700, Alexei Starovoitov wrote:
> On Fri, Aug 11, 2023 at 06:15:01PM +0200, Larysa Zaremba wrote:
> > Implement .xmo_rx_csum callback to allow XDP code to determine,
> > whether HW has validated any checksums.
> > 
> > Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
> > ---
> >  drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 26 +++++++++++++++++++
> >  1 file changed, 26 insertions(+)
> > 
> > diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
> > index 6ae57a98a4d8..f11a245705bc 100644
> > --- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
> > +++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
> > @@ -660,8 +660,34 @@ static int ice_xdp_rx_vlan_tag(const struct xdp_md *ctx, u16 *vlan_tci,
> >  	return 0;
> >  }
> >  
> > +/**
> > + * ice_xdp_rx_csum - RX checksum XDP hint handler
> > + * @ctx: XDP buff pointer
> > + * @csum_status: status destination address
> > + * @csum: not used
> > + */
> > +static int ice_xdp_rx_csum(const struct xdp_md *ctx,
> > +			   enum xdp_csum_status *csum_status, __wsum *csum)
> > +{
> > +	const struct ice_xdp_buff *xdp_ext = (void *)ctx;
> > +	const union ice_32b_rx_flex_desc *eop_desc;
> > +	enum ice_rx_csum_status status;
> > +	u16 ptype;
> > +
> > +	eop_desc = xdp_ext->pkt_ctx.eop_desc;
> > +	ptype = ice_get_ptype(eop_desc);
> > +
> > +	status = ice_get_rx_csum_status(eop_desc, ptype);
> > +	if (status & ICE_RX_CSUM_FAIL)
> > +		return -ENODATA;
> > +
> > +	*csum_status = XDP_CHECKSUM_VERIFIED;
> > +	return 0;
> > +}
> > +
> >  const struct xdp_metadata_ops ice_xdp_md_ops = {
> >  	.xmo_rx_timestamp		= ice_xdp_rx_hw_ts,
> >  	.xmo_rx_hash			= ice_xdp_rx_hash,
> >  	.xmo_rx_vlan_tag		= ice_xdp_rx_vlan_tag,
> > +	.xmo_rx_csum			= ice_xdp_rx_csum,
> 
> timestamp hint is implemented by igc, mlx4, mlx5, stmmac
> hash hint is implemneted by igc, mlx4, mlx5.
> With above csum and vlan hints will be in ice only.
> I'd like to see at least one more driver to implement them as well to make sure
> the proposed API works for other vendors.

I have no other vendors on my current setup :/

I could send an RFC of v5 + a compile-tested implementation for some other 
vendor, so you can see, how it might look.

What do you think?

  reply	other threads:[~2023-08-22  9:13 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-11 16:14 [xdp-hints] [PATCH bpf-next v5 00/21] XDP metadata via kfuncs for ice Larysa Zaremba
2023-08-11 16:14 ` [xdp-hints] [PATCH bpf-next v5 01/21] ice: make RX hash reading code more reusable Larysa Zaremba
2023-08-11 16:14 ` [xdp-hints] [PATCH bpf-next v5 02/21] ice: make RX HW timestamp " Larysa Zaremba
2023-08-11 16:14 ` [xdp-hints] [PATCH bpf-next v5 03/21] ice: make RX checksum checking " Larysa Zaremba
2023-08-11 16:14 ` [xdp-hints] [PATCH bpf-next v5 04/21] ice: Make ptype internal to descriptor info processing Larysa Zaremba
2023-08-11 16:14 ` [xdp-hints] [PATCH bpf-next v5 05/21] ice: Introduce ice_xdp_buff Larysa Zaremba
2023-08-11 16:14 ` [xdp-hints] [PATCH bpf-next v5 06/21] ice: Support HW timestamp hint Larysa Zaremba
2023-08-11 16:14 ` [xdp-hints] [PATCH bpf-next v5 07/21] ice: Support RX hash XDP hint Larysa Zaremba
2023-08-11 16:14 ` [xdp-hints] [PATCH bpf-next v5 08/21] ice: Support XDP hints in AF_XDP ZC mode Larysa Zaremba
2023-08-11 16:14 ` [xdp-hints] [PATCH bpf-next v5 09/21] xdp: Add VLAN tag hint Larysa Zaremba
2023-08-11 16:14 ` [xdp-hints] [PATCH bpf-next v5 10/21] ice: Implement " Larysa Zaremba
2023-08-11 16:14 ` [xdp-hints] [PATCH bpf-next v5 11/21] ice: use VLAN proto from ring packet context in skb path Larysa Zaremba
2023-08-11 16:15 ` [xdp-hints] [PATCH bpf-next v5 12/21] xdp: Add checksum hint Larysa Zaremba
2023-08-11 16:15 ` [xdp-hints] [PATCH bpf-next v5 13/21] ice: Implement " Larysa Zaremba
2023-08-17 21:58   ` [xdp-hints] " Alexei Starovoitov
2023-08-22  9:07     ` Larysa Zaremba [this message]
2023-08-22 19:50       ` Alexei Starovoitov
2023-08-11 16:15 ` [xdp-hints] [PATCH bpf-next v5 14/21] selftests/bpf: Allow VLAN packets in xdp_hw_metadata Larysa Zaremba
2023-08-11 16:15 ` [xdp-hints] [PATCH bpf-next v5 15/21] net, xdp: allow metadata > 32 Larysa Zaremba
2023-08-11 16:15 ` [xdp-hints] [PATCH bpf-next v5 16/21] selftests/bpf: Add flags and new hints to xdp_hw_metadata Larysa Zaremba
2023-08-11 16:15 ` [xdp-hints] [PATCH bpf-next v5 17/21] veth: Implement VLAN tag and checksum XDP hint Larysa Zaremba
2023-08-11 16:15 ` [xdp-hints] [PATCH bpf-next v5 18/21] net: make vlan_get_tag() return -ENODATA instead of -EINVAL Larysa Zaremba
2023-08-11 16:15 ` [xdp-hints] [PATCH bpf-next v5 19/21] selftests/bpf: Use AF_INET for TX in xdp_metadata Larysa Zaremba
2023-08-11 16:15 ` [xdp-hints] [PATCH bpf-next v5 20/21] selftests/bpf: Check VLAN tag and proto " Larysa Zaremba
2023-08-11 16:15 ` [xdp-hints] [PATCH bpf-next v5 21/21] selftests/bpf: check checksum state " Larysa Zaremba
2023-08-11 16:23 ` [xdp-hints] Re: [PATCH bpf-next v5 00/21] XDP metadata via kfuncs for ice Larysa Zaremba
2023-08-15 18:45 ` Stanislav Fomichev

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