From: Martin KaFai Lau <martin.lau@linux.dev>
To: "Stanislav Fomichev" <sdf@google.com>,
"Toke Høiland-Jørgensen" <toke@redhat.com>
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
song@kernel.org, yhs@fb.com, john.fastabend@gmail.com,
kpsingh@kernel.org, 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,
bpf@vger.kernel.org
Subject: [xdp-hints] Re: [RFC bpf-next v2 06/14] xdp: Carry over xdp metadata into skb context
Date: Thu, 10 Nov 2022 15:58:22 -0800 [thread overview]
Message-ID: <74eb911b-9c23-1987-fa25-6381b1f130c6@linux.dev> (raw)
In-Reply-To: <CAKH8qBsfzYmQ9SZXhFetf_zQPNmE_L=_H_rRxJEwZzNbqtoKJA@mail.gmail.com>
On 11/10/22 10:52 AM, Stanislav Fomichev wrote:
>>> Oh, that seems even better than returning it from
>>> bpf_xdp_metadata_export_to_skb.
>>> bpf_xdp_metadata_export_to_skb can return true/false and the rest goes
>>> via default verifier ctx resolution mechanism..
>>> (returning ptr from a kfunc seems to be a bit complicated right now)
What is the complication in returning ptr from a kfunc? I want to see if it can
be solved because it will be an easier API to use instead of calling another
kfunc to get the ptr.
>> See my response to John in the other thread about mixing stable UAPI (in
>> xdp_md) and unstable BTF structures in the xdp_md struct: I think this
>> is confusing and would prefer a kfunc.
hmm... right, it will be one of the first considering the current __bpf_md_ptr()
usages are only exposing another struct in uapi, eg. __bpf_md_ptr(struct
bpf_sock *, sk).
A kfunc will also be fine.
next prev parent reply other threads:[~2022-11-10 23:58 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-04 3:25 [xdp-hints] [RFC bpf-next v2 00/14] xdp: hints via kfuncs Stanislav Fomichev
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 01/14] bpf: Introduce bpf_patch Stanislav Fomichev
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 02/14] bpf: Support inlined/unrolled kfuncs for xdp metadata Stanislav Fomichev
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 03/14] veth: Introduce veth_xdp_buff wrapper for xdp_buff Stanislav Fomichev
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 04/14] veth: Support rx timestamp metadata for xdp Stanislav Fomichev
2022-11-09 11:21 ` [xdp-hints] " Toke Høiland-Jørgensen
2022-11-09 21:34 ` Stanislav Fomichev
2022-11-10 0:25 ` John Fastabend
2022-11-10 1:02 ` Stanislav Fomichev
2022-11-10 1:35 ` John Fastabend
2022-11-10 6:44 ` Stanislav Fomichev
2022-11-10 17:39 ` John Fastabend
2022-11-10 18:52 ` Stanislav Fomichev
2022-11-11 10:41 ` Jesper Dangaard Brouer
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 05/14] selftests/bpf: Verify xdp_metadata xdp->af_xdp path Stanislav Fomichev
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 06/14] xdp: Carry over xdp metadata into skb context Stanislav Fomichev
2022-11-07 22:01 ` [xdp-hints] " Martin KaFai Lau
2022-11-08 21:54 ` Stanislav Fomichev
2022-11-09 3:07 ` Martin KaFai Lau
2022-11-09 4:19 ` Martin KaFai Lau
2022-11-09 11:10 ` Toke Høiland-Jørgensen
2022-11-09 18:22 ` Martin KaFai Lau
2022-11-09 21:33 ` Stanislav Fomichev
2022-11-10 0:13 ` Martin KaFai Lau
2022-11-10 1:02 ` Stanislav Fomichev
2022-11-10 14:26 ` Toke Høiland-Jørgensen
2022-11-10 18:52 ` Stanislav Fomichev
2022-11-10 23:14 ` Toke Høiland-Jørgensen
2022-11-10 23:52 ` Stanislav Fomichev
2022-11-11 0:10 ` Toke Høiland-Jørgensen
2022-11-11 0:45 ` Martin KaFai Lau
2022-11-11 9:37 ` Toke Høiland-Jørgensen
2022-11-11 0:33 ` Martin KaFai Lau
2022-11-11 0:57 ` Stanislav Fomichev
2022-11-11 1:26 ` Martin KaFai Lau
2022-11-11 9:41 ` Toke Høiland-Jørgensen
2022-11-10 23:58 ` Martin KaFai Lau [this message]
2022-11-11 0:20 ` Stanislav Fomichev
2022-11-10 14:19 ` Toke Høiland-Jørgensen
2022-11-10 19:04 ` Martin KaFai Lau
2022-11-10 23:29 ` Toke Høiland-Jørgensen
2022-11-11 1:39 ` Martin KaFai Lau
2022-11-11 9:44 ` Toke Høiland-Jørgensen
2022-11-10 1:26 ` John Fastabend
2022-11-10 14:32 ` Toke Høiland-Jørgensen
2022-11-10 17:30 ` John Fastabend
2022-11-10 22:49 ` Toke Høiland-Jørgensen
2022-11-10 1:09 ` John Fastabend
2022-11-10 6:44 ` Stanislav Fomichev
2022-11-10 21:21 ` David Ahern
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 07/14] selftests/bpf: Verify xdp_metadata xdp->skb path Stanislav Fomichev
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 08/14] bpf: Helper to simplify calling kernel routines from unrolled kfuncs Stanislav Fomichev
2022-11-05 0:40 ` [xdp-hints] " Alexei Starovoitov
2022-11-05 2:18 ` Stanislav Fomichev
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 09/14] ice: Introduce ice_xdp_buff wrapper for xdp_buff Stanislav Fomichev
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 10/14] ice: Support rx timestamp metadata for xdp Stanislav Fomichev
2022-11-04 14:35 ` [xdp-hints] " Alexander Lobakin
2022-11-04 18:21 ` Stanislav Fomichev
2022-11-07 17:11 ` Alexander Lobakin
2022-11-07 19:10 ` Stanislav Fomichev
2022-12-15 11:54 ` Larysa Zaremba
2022-12-15 14:29 ` Toke Høiland-Jørgensen
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 11/14] mlx4: Introduce mlx4_xdp_buff wrapper for xdp_buff Stanislav Fomichev
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 12/14] mxl4: Support rx timestamp metadata for xdp Stanislav Fomichev
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 13/14] bnxt: Introduce bnxt_xdp_buff wrapper for xdp_buff Stanislav Fomichev
2022-11-04 3:25 ` [xdp-hints] [RFC bpf-next v2 14/14] bnxt: Support rx timestamp metadata for xdp Stanislav Fomichev
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://lists.xdp-project.net/postorius/lists/xdp-hints.xdp-project.net/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=74eb911b-9c23-1987-fa25-6381b1f130c6@linux.dev \
--to=martin.lau@linux.dev \
--cc=alexandr.lobakin@intel.com \
--cc=anatoly.burakov@intel.com \
--cc=andrii@kernel.org \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=brouer@redhat.com \
--cc=daniel@iogearbox.net \
--cc=dsahern@gmail.com \
--cc=haoluo@google.com \
--cc=john.fastabend@gmail.com \
--cc=jolsa@kernel.org \
--cc=kpsingh@kernel.org \
--cc=kuba@kernel.org \
--cc=magnus.karlsson@gmail.com \
--cc=mtahhan@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=sdf@google.com \
--cc=song@kernel.org \
--cc=toke@redhat.com \
--cc=willemb@google.com \
--cc=xdp-hints@xdp-project.net \
--cc=yhs@fb.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox