[RFC PATCH] doc: clarify VLAN and QinQ stripping behaviour

Bruce Richardson bruce.richardson at intel.com
Tue Jul 15 18:20:21 CEST 2025


On Tue, Jul 15, 2025 at 05:04:42PM +0200, Morten Brørup wrote:
> FYI:
> Last time I looked, it seemed like the VLAN/QINQ "tag present" mbuf RX flags were only set along with the RX _STRIPPED flags, i.e. not set when stripping was not enabled.
> Although setting the "tag present" flags (and the vlan_tci/vlan_tci_outer fields) without stripping would be nice to have, I think we should initially focus on stripping behavior.
> 
Yep. Again, it may be that HW doesn't support reporting a tag unless it is
stripped. :-(

/Bruce


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