Hi Venumadhav, Sharing my knowledge nuggets as below: * gtpu_input is an API which processes the gtpu packet for decapsulation and fire out the packet as an IP packet. You cannot reach gtpu_encap_inline with the same. But if you wish to send the Decapsulated IP packet to encap, you can using the next0 variable which enqueues your packet to the next node you wish to reach.
I don't guarantee that your packet will be encapsulated without any error but you can reach the next node you wish to reach in this way. Thanks and Regards, Akash S R On Fri, Jul 16, 2021, 2:03 PM Venumadhav Josyula <vjosy...@gmail.com> wrote: > Hi vpp gtpu experts, > > We have requirement where > > - we create gtpu tunnel > - Now, we will hit gtpu input, where we will receive gtpu packet and > when we send it out on the interface replace the tied with tried and > massage the ip address of src and destination and send the packet out > > vpp# show vlib graph gtpu4-input > Name Next Previous > gtpu4-input error-drop [0] ip4-gtpu-bypass > l2-input [1] ip4-udp-lookup > ip4-input [2] > ip6-input [3] > vpp# > > vpp# show vlib graph gtpu4-encap > Name Next Previous > gtpu4-encap error-drop [0] ip4-dvr-dpo > ip4-lookup [1] ip4-arp > ip6-lookup [2] ip4-midchain > ip4-load-balance [3] ip4-mcast-midchain > ip4-rewrite-mcast > ip4-rewrite-bcast > ip4-rewrite > interface-output > > vpp# show vlib graph gtpu4-input > Name Next Previous > gtpu4-input error-drop [0] ip4-gtpu-bypass > l2-input [1] ip4-udp-lookup > gtpu4-encap [2] > gtpu6-encap [3] > > Now we want next gtpu-input to be gtpu4-encap and the next of that to > ip4-load-balance or directly send it out. Is such thing possible. > > Thanks, > Regards, > Venu > > > >
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