Wednesday, March 28, 2018 10:40 AM, Rahul Lakkireddy: > On Wednesday, March 03/28/18, 2018 at 10:19:17 +0530, Shahaf Shuler > > > > What exactly is the offload you try to expose? To strip the inner VLAN while > keeping the outer one? > > > > Sorry about that, I should have provided more details on this earlier. > Chelsio hardware supports below for double-vlans: > 1) Dropping Outer VLAN in hw; inner vlan is stripped and available as packet > metadata.
So this is basically the DEV_RX_OFFLOAD_QINQ_STRIP with limitation from your device you cannot return the outer vlan in the packet metadata > 2) Preserving Outer VLAN so, Outer VLAN is stripped and available as packet > metadata. Inner VLAN is available as part of packet itself. And this one is the regular DEV_RX_OFFLOAD_VLAN_STRIP > > So, the configurability here is with respect to Outer VLAN and subsequently > what is available as part of packet metadata (outer or inner vlan). Inner > VLAN gets retained in both cases. However, based on how Outer VLAN is > configured, Inner VLAN will be available either as packet metadata or as part > of packet itself. > > We are not very sure if DEV_RX_OFFLOAD_QINQ_STRIP could be used here. > If it holds the same meaning then we will use the same. Yeah , we are missing good documentation of what each offload means. > > Thanks, > Rahul
