netdev - Re: [RFC PATCH bpf-next] bpf: Introduce bpf

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Sun, 23 May 2021 13:48:34 +0200
From:   Toke Høiland-Jørgensen <toke@...hat.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>,
        davem@...emloft.net
Cc:     daniel@...earbox.net, andrii@...nel.org, john.fastabend@...il.com,
        lmb@...udflare.com, netdev@...r.kernel.org, bpf@...r.kernel.org,
        kernel-team@...com
Subject: Re: [RFC PATCH bpf-next] bpf: Introduce bpf_timer

Still wrapping my head around this, but one thing immediately sprang to
mind:

> + * long bpf_timer_mod(struct bpf_timer *timer, u64 msecs)
> + *	Description
> + *		Set the timer expiration N msecs from the current time.
> + *	Return
> + *		zero

Could we make this use nanoseconds (and wire it up to hrtimers) instead?
I would like to eventually be able to use this for pacing out network
packets, and msec precision is way too coarse for that...

-Toke