From: Martin KaFai Lau <kafai@fb.com>
To: Florent Revest <revest@chromium.org>
Cc: <bpf@vger.kernel.org>, <viro@zeniv.linux.org.uk>,
<davem@davemloft.net>, <kuba@kernel.org>, <ast@kernel.org>,
<daniel@iogearbox.net>, <yhs@fb.com>, <andrii@kernel.org>,
<kpsingh@chromium.org>, <revest@google.com>,
<linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>
Subject: Re: [PATCH v2 3/5] bpf: Expose bpf_sk_storage_* to iterator programs
Date: Thu, 19 Nov 2020 15:50:42 -0800 [thread overview]
Message-ID: <20201119235042.mefu5pzrggwtzab4@kafai-mbp.dhcp.thefacebook.com> (raw)
In-Reply-To: <20201119162654.2410685-3-revest@chromium.org>
On Thu, Nov 19, 2020 at 05:26:52PM +0100, Florent Revest wrote:
> From: Florent Revest <revest@google.com>
>
> Iterators are currently used to expose kernel information to userspace
> over fast procfs-like files but iterators could also be used to
> manipulate local storage. For example, the task_file iterator could be
> used to initialize a socket local storage with associations between
> processes and sockets or to selectively delete local storage values.
>
> This exposes both socket local storage helpers to all iterators.
> Alternatively we could expose it to only certain iterators with strcmps
> on prog->aux->attach_func_name.
I cannot see any hole to iter the bpf_sk_storage_map and also
bpf_sk_storage_get/delete() itself for now.
I have looked at other iters (e.g. tcp, udp, and sock_map iter).
It will be good if you can double check them also.
I think at least one more test on the tcp iter is needed.
Other than that,
Acked-by: Martin KaFai Lau <kafai@fb.com>
next prev parent reply other threads:[~2020-11-19 23:51 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-19 16:26 [PATCH v2 1/5] net: Remove the err argument from sock_from_file Florent Revest
2020-11-19 16:26 ` [PATCH v2 2/5] bpf: Add a bpf_sock_from_file helper Florent Revest
2020-11-19 21:51 ` KP Singh
2020-11-19 23:31 ` Martin KaFai Lau
2020-11-19 16:26 ` [PATCH v2 3/5] bpf: Expose bpf_sk_storage_* to iterator programs Florent Revest
2020-11-19 22:05 ` KP Singh
2020-11-19 23:50 ` Martin KaFai Lau [this message]
2020-11-19 16:26 ` [PATCH v2 4/5] bpf: Add an iterator selftest for bpf_sk_storage_delete Florent Revest
2020-11-20 0:16 ` Martin KaFai Lau
2020-11-19 16:26 ` [PATCH v2 5/5] bpf: Add an iterator selftest for bpf_sk_storage_get Florent Revest
2020-11-20 0:32 ` Martin KaFai Lau
2020-11-20 0:51 ` KP Singh
2020-11-26 16:44 ` Florent Revest
2020-11-19 21:41 ` [PATCH v2 1/5] net: Remove the err argument from sock_from_file KP Singh
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=20201119235042.mefu5pzrggwtzab4@kafai-mbp.dhcp.thefacebook.com \
--to=kafai@fb.com \
--cc=andrii@kernel.org \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=kpsingh@chromium.org \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=revest@chromium.org \
--cc=revest@google.com \
--cc=viro@zeniv.linux.org.uk \
--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;
as well as URLs for NNTP newsgroup(s).