netdev - Re: set vlan CFI and TPID

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, 12 Dec 2010 16:20:58 -0800
From:	Jesse Gross <jesse@...ira.com>
To:	hong zhiyi <zhiyi.hong@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: set vlan CFI and TPID

On Tue, Dec 7, 2010 at 8:04 PM, hong zhiyi <zhiyi.hong@...il.com> wrote:
> Hi All,
>
> May I ask how to set the 1 bit CFI and 2 bytesTPID in the VLAN header
> by vconfig?

You can't change them using vconfig.  For 802.1q/Ethernet, the TPID is
0x8100 and the CFI is 0.

> and what is the meaning of the egress map and ingress map?

These convert between the PCP bits found in the vlan header and the
priority field that is used internally for QoS, which you access
through tc.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html