From: "Toke Høiland-Jørgensen" <toke@redhat.com>
To: "Björn Töpel" <bjorn.topel@gmail.com>,
ast@kernel.org, daniel@iogearbox.net, netdev@vger.kernel.org,
bpf@vger.kernel.org
Cc: "Björn Töpel" <bjorn.topel@intel.com>,
maciej.fijalkowski@intel.com, hawk@kernel.org,
magnus.karlsson@intel.com, john.fastabend@gmail.com,
kuba@kernel.org, davem@davemloft.net
Subject: Re: [PATCH bpf-next v4 1/2] bpf, xdp: make bpf_redirect_map() a map operation
Date: Fri, 26 Feb 2021 12:37:40 +0100 [thread overview]
Message-ID: <87sg5jys8r.fsf@toke.dk> (raw)
In-Reply-To: <20210226112322.144927-2-bjorn.topel@gmail.com>
Björn Töpel <bjorn.topel@gmail.com> writes:
> From: Björn Töpel <bjorn.topel@intel.com>
>
> Currently the bpf_redirect_map() implementation dispatches to the
> correct map-lookup function via a switch-statement. To avoid the
> dispatching, this change adds bpf_redirect_map() as a map
> operation. Each map provides its bpf_redirect_map() version, and
> correct function is automatically selected by the BPF verifier.
>
> A nice side-effect of the code movement is that the map lookup
> functions are now local to the map implementation files, which removes
> one additional function call.
>
> Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Nice! I agree that this is a much nicer approach! :)
(That last paragraph above is why I asked if you updated the performance
numbers in the cover letter; removing an additional function call should
affect those, right?)
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
next prev parent reply other threads:[~2021-02-26 11:39 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 11:23 [PATCH bpf-next v4 0/2] Optimize bpf_redirect_map()/xdp_do_redirect() Björn Töpel
2021-02-26 11:23 ` [PATCH bpf-next v4 1/2] bpf, xdp: make bpf_redirect_map() a map operation Björn Töpel
2021-02-26 11:37 ` Toke Høiland-Jørgensen [this message]
2021-02-26 11:40 ` Björn Töpel
2021-02-26 12:04 ` Björn Töpel
2021-02-26 12:26 ` Toke Høiland-Jørgensen
2021-02-26 14:28 ` Jesper Dangaard Brouer
2021-02-26 14:27 ` Jesper Dangaard Brouer
2021-02-26 14:29 ` Jesper Dangaard Brouer
2021-02-26 15:23 ` kernel test robot
2021-02-26 15:23 ` kernel test robot
2021-02-26 21:48 ` Daniel Borkmann
2021-02-27 9:04 ` Björn Töpel
2021-02-27 10:22 ` Daniel Borkmann
2021-02-26 11:23 ` [PATCH bpf-next v4 2/2] bpf, xdp: restructure redirect actions Björn Töpel
2021-02-26 11:35 ` [PATCH bpf-next v4 0/2] Optimize bpf_redirect_map()/xdp_do_redirect() Toke Høiland-Jørgensen
2021-02-26 11:38 ` Björn Töpel
2021-02-26 11:43 ` Toke Høiland-Jørgensen
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
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87sg5jys8r.fsf@toke.dk \
--to=toke@redhat.com \
--cc=ast@kernel.org \
--cc=bjorn.topel@gmail.com \
--cc=bjorn.topel@intel.com \
--cc=bpf@vger.kernel.org \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=hawk@kernel.org \
--cc=john.fastabend@gmail.com \
--cc=kuba@kernel.org \
--cc=maciej.fijalkowski@intel.com \
--cc=magnus.karlsson@intel.com \
--cc=netdev@vger.kernel.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.