[dpdk-dev] [PATCH 1/3] net/netvsc: support receive without vlan strip

Stephen Hemminger stephen at networkplumber.org
Fri Dec 14 17:28:44 CET 2018


On Fri, 14 Dec 2018 16:09:33 +0000
Ferruh Yigit <ferruh.yigit at intel.com> wrote:

> On 12/14/2018 1:26 AM, Stephen Hemminger wrote:
> > In some cases, VLAN stripping is not desireable. If necessary
> > re-insert stripped vlan tag.
> > 
> > Signed-off-by: Stephen Hemminger <sthemmin at microsoft.com>  
> 
> <...>
> 
> > @@ -501,6 +501,14 @@ static void hn_rxpkt(struct hn_rx_queue *rxq, struct hn_rx_bufinfo *rxb,
> >  	if (info->vlan_info != HN_NDIS_VLAN_INFO_INVALID) {
> >  		m->vlan_tci = info->vlan_info;
> >  		m->ol_flags |= PKT_RX_VLAN_STRIPPED | PKT_RX_VLAN;
> > +
> > +		/* NDIS always strips tag, put it back if necessary */
> > +		if (!hv->vlan_strip && rte_vlan_insert(&m)) {  
> 
> Should 'PKT_RX_VLAN_STRIPPED' flag removed when vlan inserted back?

This is already done by rte_vlan_insert()


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