[cherry-pick] Tunnel Scoped TC MAP and Remarking (#1413) #1451
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This PR add following behavior to tunnel encap and decap
Tunnel Encap:
SAI_TUNNEL_ATTR_ENCAP_QOS_TC_AND_COLOR_TO_DSCP_MAP for remarking the packet based on normalized TC as per port TC MAP binding
SAI_TUNNEL_ATTR_ENCAP_QOS_TC_TO_QUEUE_MAP for queue selection based on normalized TC as per port TC MAP binding
Tunnel Decap:
SAI_TUNNEL_ATTR_DECAP_QOS_DSCP_TO_TC_MAP new TC MAP can be bind'ed to the tunnel for decap. This MAP overrides port MAP if configured.
SAI_TUNNEL_ATTR_DECAP_QOS_TC_TO_PRIORITY_GROUP_MAP for mapping the normalized TC to priority group mainly for PFC generation.
DSCP mode takes effect as configured for both cases.
Signed-off-by: Jai Kumar jai.kumar@broadcom.com