From: Patrick McHardy <[email protected]>
Date: Mon, 05 Nov 2007 19:00:19 +0100
> This looks like a rather expensive operation for the unlikely case
> that packets will be received by a packet socket. IMO it should only
> be reconstructed if actually needed, by af_packet itself.
Completely agreed. We should not do this by default when %99
of the networking stack simply does not care about this.
> As we discussed some time back storing the VLAN tag in the CB on
> TX clashes with other users of the CB like qdiscs, so we need a
> new field in the skb for this anyway.
Someone will have to find a way to remove some other fields in
sk_buff before I'm going to allow more space to be eaten up
by this completely fringe case feature.
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