From: Krzysztof Halasa <khc@pm.waw.pl>
To: andrei radulescu-banu <iubica2@yahoo.com>
Cc: Stephen Hemminger <shemminger@linux-foundation.org>,
Patrick McHardy <kaber@trash.net>,
linux-kernel@vger.kernel.org,
Linux Netdev List <netdev@vger.kernel.org>
Subject: Re: Linux, tcpdump and vlan
Date: Fri, 20 Jul 2007 21:58:27 +0200 [thread overview]
Message-ID: <m31wf226fw.fsf@maximus.localdomain> (raw)
In-Reply-To: <997818.30021.qm@web56615.mail.re3.yahoo.com> (andrei radulescu-banu's message of "Thu, 19 Jul 2007 09:02:38 -0700 (PDT)")
Another idea - perhaps we could make the software VLANs behave
the same as hw ones? I.e., stripping the tag on RX while setting
some magic skb field?
The packets could go via main interface first (normal path, with
eth_type_trans stripping the tag and setting protocol = some 802.1Q),
netif_rx | netif_receive_skb, then through the VLAN device with
finally eth_type_trans setting the IPv4 etc. protocol to pass to
L3 layers.
I can see potential problems on TX, the packets would have to be
presented without the tag (but with VLAN ID set somewhere in the skb)
and that probably means all drivers would have to be modified.
Seems a bit of work, I know my message is missing the patch...
--
Krzysztof Halasa
next prev parent reply other threads:[~2007-07-20 19:58 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-19 16:02 Linux, tcpdump and vlan andrei radulescu-banu
2007-07-20 19:58 ` Krzysztof Halasa [this message]
2007-07-20 20:34 ` Ben Greear
2007-07-21 11:32 ` Krzysztof Halasa
2007-07-21 17:57 ` Ben Greear
2007-07-21 21:15 ` Krzysztof Halasa
-- strict thread matches above, loose matches on Subject: below --
2007-07-19 21:38 andrei radulescu-banu
2007-07-19 23:38 ` Ben Greear
2007-07-20 20:19 ` Krzysztof Halasa
2007-07-19 18:20 andrei radulescu-banu
2007-07-19 19:28 ` Stephen Hemminger
2007-07-19 17:46 andrei radulescu-banu
2007-07-19 15:47 andrei radulescu-banu
2007-07-19 16:21 ` Stephen Hemminger
2007-07-19 16:33 ` Patrick McHardy
2007-07-19 16:47 ` Ben Greear
[not found] <878246.51044.qm@web56608.mail.re3.yahoo.com>
2007-07-18 22:57 ` Patrick McHardy
2007-07-18 23:22 ` Ben Greear
2007-07-18 23:34 ` Patrick McHardy
2007-07-19 0:01 ` Ben Greear
2007-07-19 0:19 ` Patrick McHardy
2007-07-19 13:28 ` Krzysztof Halasa
2007-07-19 13:41 ` Stephen Hemminger
2007-07-19 14:00 ` Patrick McHardy
2007-07-19 14:23 ` Krzysztof Halasa
2007-07-19 15:00 ` Stephen Hemminger
2007-07-19 15:45 ` Krzysztof Halasa
2007-07-19 15:20 ` Stephen Hemminger
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