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From: Daniel Borkmann <daniel@iogearbox.net>
To: Jamal Hadi Salim <jhs@mojatatu.com>,
	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 17:03:40 +0200	[thread overview]
Message-ID: <578E414C.1080501@iogearbox.net> (raw)
In-Reply-To: <578E3172.9020601@mojatatu.com>

On 07/19/2016 03:56 PM, Jamal Hadi Salim wrote:
[...]
>> 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?

Well, what Cong recently fixed with mirred was related to mac header ...

You probably need skb_postpull_rcsum(), skb_postpush_rcsum() pair.

Also, what about skb_try_make_writable()?

  reply	other threads:[~2016-07-19 15:03 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
2016-07-19 15:03             ` Daniel Borkmann [this message]
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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