Hi, Can we do the append/prepend (of the port id with vlan id) through config file?
Thanks, Nidhia On Fri, Apr 28, 2017 at 7:24 PM, Singh, Jasvinder <jasvinder.si...@intel.com > wrote: > Hi Nidhia, > > > I am developing an application in which I need to use both incoming port > and vlan as the key for the flow table. Port field is available at 24th > byte of mbuf and vlan(single tagged) will be at 268th byte (128 mbuf + 128 > headroom + 12 ethernet header). > How can I represent this in my config file in the src_mask field? > Is there any way to take these fields separately and keep in headroom and > then use them to calculate hash for lookup? > > > [Jasvinder] - If you look at edge_router_upstream.cfg, pass-through > pipeline have mask and offset defined for extracting the key from the > packet header and storing in the headroom at the offset 128. This key is > used in flow_classification pipeline to classify the flows. You can follow > similar approach by using pass-through pipeline doing that action at the > input port. For that, define mask (00000000FFFFFFFF) and offset fields for > extracting the vlan-tag from the packet in pass-through pipeline and store > at the desired offset in the headroom and prepend the vlan tag stored in > the metadata with port id read from mbuf. In flow-classification pipeline, > you can specify the headroom offset and mask to read the final key > (portid+vlan tag) stored in the packet-metadata for classification. > > > > Thanks for your reply and help. > > > Regards, > Nidhia Varghese > -- Regards, Nidhia Varghese
