netdev - Re: [patch net-next 4/4] mlxsw: spectrum: Add packet sample offloading support

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, 22 Jan 2017 14:04:56 +0200
From:   Ido Schimmel <idosch@...sch.org>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, yotamg@...lanox.com,
        idosch@...lanox.com, eladr@...lanox.com, nogahf@...lanox.com,
        ogerlitz@...lanox.com, jhs@...atatu.com, geert+renesas@...der.be,
        stephen@...workplumber.org, xiyou.wangcong@...il.com,
        linux@...ck-us.net, roopa@...ulusnetworks.com,
        john.fastabend@...il.com, simon.horman@...ronome.com,
        mrv@...atatu.com
Subject: Re: [patch net-next 4/4] mlxsw: spectrum: Add packet sample
 offloading support

On Sun, Jan 22, 2017 at 12:44:47PM +0100, Jiri Pirko wrote:
> From: Yotam Gigi <yotamg@...lanox.com>
> 
> Using the MPSC register, add the functions that configure port-based
> packet sampling in hardware and the necessary datatypes in the
> mlxsw_sp_port struct. In addition, add the necessary trap for sampled
> packets and integrate with matchall offloading to allow offloading of the
> sample tc action.
> 
> The current offload support is for the tc command:
> 
> tc filter add dev <DEV> parent ffff: \
> 	  matchall skip_sw \
> 	  action sample rate <RATE> group <GROUP> [trunc <SIZE>]
> 
> Where only ingress qdiscs are supported, and only a combination of
> matchall classifier and sample action will lead to activating hardware
> packet sampling.
> 
> Signed-off-by: Yotam Gigi <yotamg@...lanox.com>
> Signed-off-by: Jiri Pirko <jiri@...lanox.com>

Reviewed-by: Ido Schimmel <idosch@...lanox.com>