netdev - Re: [RFC net-next 6/9] net/cls_flower: Introduce hardware offloading

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]

Message-ID: <56AF25E5.6000105@gmail.com>
Date:	Mon, 01 Feb 2016 01:31:17 -0800
From:	John Fastabend <john.fastabend@...il.com>
To:	Amir Vadai <amir@...ai.me>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	John Fastabend <john.r.fastabend@...el.com>
CC:	Or Gerlitz <ogerlitz@...lanox.com>,
	Hadar Har-Zion <hadarh@...lanox.com>,
	Jiri Pirko <jiri@...lanox.com>,
	Jamal Hadi Salim <jhs@...atatu.com>
Subject: Re: [RFC net-next 6/9] net/cls_flower: Introduce hardware offloading

On 16-02-01 12:34 AM, Amir Vadai wrote:
> During initialization, tcf_exts_offload_init() is called to initialize
> the list of actions description. later on, the classifier description
> is prepared and sent to the switchdev using switchdev_port_flow_add().
> 
> When offloaded, fl_classify() is a NOP - already done in hardware.
> 
> Signed-off-by: Amir Vadai <amir@...ai.me>
> ---

You need to account for where the classifier is being loaded
by passing the handle as I did in my patch set. Otherwise you may
be offloading on egress/ingress or even some qdisc multiple layers
down in the hierarchy.

.John