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From: Jamal Hadi Salim <jhs@mojatatu•com>
To: Daniel Borkmann <daniel@iogearbox•net>,
	Alexei Starovoitov <alexei.starovoitov@gmail•com>
Cc: davem@davemloft•net, netdev@vger•kernel.org,
	xiyou.wangcong@gmail•com, nikolay@cumulusnetworks•com
Subject: Re: [PATCH net-next 1/1] net_sched: Introduce skbmod action
Date: Tue, 19 Jul 2016 09:56:02 -0400	[thread overview]
Message-ID: <578E3172.9020601@mojatatu.com> (raw)
In-Reply-To: <578E2960.7080709@iogearbox.net>

On 16-07-19 09:21 AM, Daniel Borkmann wrote:

> True, the 32 bit chunks are more generic and as such you need to put more
> effort in user space to handle them, but at the same time gain more
> flexibility
> w/o having to have a module for each and every proto.


I dont see anything wrong with using pedit as a first step; even
if you did what Cong said he would do _i wont use it_ given the choice
against skbmod. I think we are going in circles now in this discussion.

You probably didnt mean to say module per protocol above since we only
have one action module [no different than what ebtables or openvswitch
does. It may have more justifiable extensions in the future].

> But apart from this,
> neither pedit nor tcf_skbmod_run() here handle checksum complete, so you'll
> potentially get false positives wrt csum corruption and drops as a result
> when using either of the two.
>

pedit maybe tricky. Any suggestions?
On tcf_skbmod_run, mostly ignorance: while doing only ethernet updates;
is it still needed to do the checksum complete?

cheers,
jamal

  reply	other threads:[~2016-07-19 13:56 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-17  8:41 [PATCH net-next 1/1] net_sched: Introduce skbmod action Jamal Hadi Salim
2016-07-18  4:19 ` Alexei Starovoitov
2016-07-18  6:51   ` Jamal Hadi Salim
2016-07-18  9:44     ` Daniel Borkmann
2016-07-18 10:07       ` Thomas Graf
2016-07-18 10:26         ` Jamal Hadi Salim
2016-07-18 17:38           ` Cong Wang
2016-07-19 10:28             ` Jamal Hadi Salim
2016-07-18 10:08       ` Jamal Hadi Salim
2016-07-19 13:21         ` Daniel Borkmann
2016-07-19 13:56           ` Jamal Hadi Salim [this message]
2016-07-19 15:03             ` Daniel Borkmann
2016-07-19 18:04               ` Cong Wang
2016-07-20  0:23                 ` Daniel Borkmann
2016-07-21  7:27                   ` WAS ( " Jamal Hadi Salim
2016-07-21 14:42                     ` Daniel Borkmann

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