Hi, I am observing a crash while trying to pop out NSH header with encap-none
Client-1 <--- VPP_Switch <---(via VxLAN_gpe_tunnel)<--- (VPP as NSH Proxy)<---client-2 NSH Proxy sends packets with NSH header (SPI-185,SI-254) which VPP_Switch needs to decapsulate and sends to Client-1. During this flow VPP_Switch crashes while trying to access dmac info with Rx_interface as VxLAN-gpe tunnel interface. My query this how this NSH header can be popped out without any further encapsulation , Am I missing any configuration as set interface mac is not allowed for VxLAN-gpe interface ? Config on VPP_Switch: create interface memif id 1 master set interface state memif0/1 up set interface ip address memif0/1 1.1.2.2/24 create vxlan-gpe tunnel local 1.1.2.2 remote 1.1.2.1 vni 1000 next-nsh create nsh map nsp 185 nsi 254 mapped-nsp 185 mapped-nsi 254 nsh_action pop encap-none 1(tx_intf) 3(Rx_intf) vpp# show interface Name Idx State MTU (L3/IP4/IP6/MPLS) Counter Count local0 0 down 0/0/0/0 memif0/0 1 up 9000/0/0/0 memif0/1 2 up 9000/0/0/0 nsh_tunnel0 4 up 0/0/0/0 vxlan_gpe_tunnel0 3 up 0/0/0/0 Crash decode: DBGvpp# Program received signal SIGSEGV, Segmentation fault. 0x00007ffff6f034d6 in ethernet_input_inline_dmac_check (hi=0x7fffbab97880, dmacs=0x7fffb3523eb0, dmacs_bad=0x7fffb3523eae "", n_packets=2, ei=0x0, have_sec_dmac=0 '\000') at /home/satyendra/vpp_src/vpp/src/vnet/ethernet/node.c:697 697 u64 hwaddr = ei->address.as_u64; (gdb) bt #0 0x00007ffff6f034d6 in ethernet_input_inline_dmac_check (hi=0x7fffbab97880, dmacs=0x7fffb3523eb0, dmacs_bad=0x7fffb3523eae "", n_packets=2, ei=0x0, have_sec_dmac=0 '\000') at /home/satyendra/vpp_src/vpp/src/vnet/ethernet/node.c:697 #1 0x00007ffff6ef34d4 in ethernet_input_inline (vm=0x7fffb65ed680, node=0x7fffb831e540, from=0x7fffbab96c98, n_packets=10, variant=ETHERNET_INPUT_VARIANT_ETHERNET) at /home/satyendra/vpp_src/vpp/src/vnet/ethernet/node.c:1331 #2 0x00007ffff6ef26be in ethernet_input_node_fn (vm=0x7fffb65ed680, node=0x7fffb831e540, frame=0x7fffbab96c80) at /home/satyendra/vpp_src/vpp/src/vnet/ethernet/node.c:1712 #3 0x00007ffff6c64368 in dispatch_node (vm=0x7fffb65ed680, node=0x7fffb831e540, type=VLIB_NODE_TYPE_INTERNAL, dispatch_state=VLIB_NODE_STATE_POLLING, frame=0x7fffbab96c80, last_time_stamp=17497321838074365) at /home/satyendra/vpp_src/vpp/src/vlib/main.c:1024 #4 0x00007ffff6c64d96 in dispatch_pending_node (vm=0x7fffb65ed680, pending_frame_index=7, last_time_stamp=17497321838074365) at /home/satyendra/vpp_src/vpp/src/vlib/main.c:1183 #5 0x00007ffff6c5fa73 in vlib_main_or_worker_loop (vm=0x7fffb65ed680, is_main=1) at /home/satyendra/vpp_src/vpp/src/vlib/main.c:1649 #6 0x00007ffff6c61aba in vlib_main_loop (vm=0x7fffb65ed680) at /home/satyendra/vpp_src/vpp/src/vlib/main.c:1777 #7 0x00007ffff6c618a2 in vlib_main (vm=0x7fffb65ed680, input=0x7fffb3524fa8) at /home/satyendra/vpp_src/vpp/src/vlib/main.c:2066 #8 0x00007ffff6ce97de in thread0 (arg=140736253056640) at /home/satyendra/vpp_src/vpp/src/vlib/unix/main.c:671 #9 0x00007ffff6a93b98 in clib_calljmp () at /home/satyendra/vpp_src/vpp/src/vppinfra/longjmp.S:123 #10 0x00007fffffffc960 in ?? () #11 0x00007ffff6ce930e in vlib_unix_main (argc=27, argv=0x7fffffffde78) at /home/satyendra/vpp_src/vpp/src/vlib/unix/main.c:751 #12 0x0000000000407957 in main (argc=27, argv=0x7fffffffde78) at /home/satyendra/vpp_src/vpp/src/vpp/vnet/main.c:336 (gdb) Any help will be appreciated. Regards, Satyendra
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