netdev - Re: [Patch net] loopback: explicitly set pkt_type to PACKET

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Message-ID: <CAM_iQpXrvXUGq_ZPx0n0H9251_4hXVb_jpeUVDdBEtJ6beSNJw@mail.gmail.com>
Date:	Fri, 16 May 2014 13:57:58 -0700
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	Linux Kernel Network Developers <netdev@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Cong Wang <cwang@...pensource.com>
Subject: Re: [Patch net] loopback: explicitly set pkt_type to PACKET_HOST

On Fri, May 16, 2014 at 12:17 PM, David Miller <davem@...emloft.net> wrote:
> From: Cong Wang <xiyou.wangcong@...il.com>
>> Oh, I meant using tc mirred action to redirect packets from vethX to lo.
>> Sorry for confusing.
>
> I think you can't expect arbitrary redirection of packets from an outgoing
> interface back into the stack via loopback to work like that.
>
> The is never any legitimate reason in this type of flow to override the
> decisions made by eth_type_trans() as to the disposition of the packet type.
>

Yeah, it's ok, probably setting the right mac on vethX is the real fix
to this problem in my case.

Thanks.
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