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[VOQ Chassis] Everflow packets are sent to wrong queue on the destination front panel port
Description
When we configure a everflow mirror session with dscp and Queue value and apply this mirror session as Acl rule action, the dscp value is assigned to the outer header correctly and the Queue is assigned correctly on the recycle port. But in the second pass, When the packets are sent to destination front panel port, it is always assigned to Queue 0 unless the dscp-to-tc mapping is applied on the recycle port used for everflow.
dmin@ixre-egl-board73:~$ sudo ip netns exec asic0 show mirror_session ERSPAN Sessions Name Status SRC IP DST IP GRE DSCP TTL Queue Policer Monitor Port SRC Port Direction
dynamic_erspan {'asic0': 'active', 'asic1': 'active'} 11.0.3.0 11.0.3.5 35006 46 100 3 {'asic0': 'Ethernet-Rec0', 'asic1': 'Ethernet-Rec1'}
Port TxQ Counter/pkts Counter/bytes Drop/pkts Drop/bytes
Ethernet16 UC0 1648 477920 0 0 <<<<<<------ Destination mirror port
Port TxQ Counter/pkts Counter/bytes Drop/pkts Drop/bytes
Ethernet-Rec0 UC3 1664 422656 0 0 <<<<<<----- Everflow recycle port
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After applying dscp-to-tc mapping on Ethernet-Rec0, it is assigned to Q5 based on DSCP_TO_TC mapping correctly.
Port TxQ Counter/pkts Counter/bytes Drop/pkts Drop/bytes
Ethernet16 UC5 700 203000 0 0
Port TxQ Counter/pkts Counter/bytes Drop/pkts Drop/bytes
Ethernet-Rec0 UC3 720 182880 0 0
Steps to reproduce the issue:
- Configure everflow mirror and check the Queue assigned to the everflow packets on recycle port and destination mirror port
Describe the results you received:
The correct Queue should be assigned for destination front panel port
Describe the results you expected:
Queue0 always
Output of show version:
(paste your output here)
Output of show techsupport:
(paste your output here or download and attach the file here )
Additional information you deem important (e.g. issue happens only occasionally):
@saksarav-nokia to create the PR to add DSCP_TO_TC_MAP configuration of Recirc ports.
@arlakshm , we tested with applying the existing DSCP_TO_TC map Recirc ports and and the dscp to tc map is applied on the second pass for the everflow packets and packets on the destination front panel port goes to the queue mapped to dscp -> TC-> Queue. I discussed with @vmittal-msft and he believes we can apply the same DSCP_TO_TC map . So the fix is to modify the minigraph to apply DSCP_TO_TC map on the recirc port.
