[Mellanox] Enable DSCP remapping by using SAI attribute (#1188)

* Enable DSCP remapping by using SAI attribute

Signed-off-by: Stephen Sun <stephens@nvidia.com>

* Remove space at the end of line

Signed-off-by: Stephen Sun <stephens@nvidia.com>

---------

Signed-off-by: Stephen Sun <stephens@nvidia.com>

syncd/scripts/syncd_init_common.sh

@@ -195,6 +195,10 @@ config_syncd_mlnx()
     # Read MAC address
     MAC_ADDRESS="$(echo $SYNCD_VARS | jq -r '.mac')"
 
+    # Read dual ToR and DSCP remapping information
+    DUAL_TOR="$(echo $SYNCD_VARS | jq -r '.dual_tor')"
+    DSCP_REMAPPING="$(echo $SYNCD_VARS | jq -r '.dscp_remapping')"
+
     # Make default sai.profile
     if [[ -f $HWSKU_DIR/sai.profile.j2 ]]; then
         export RESOURCE_TYPE="$(echo $SYNCD_VARS | jq -r '.resource_type')"
@@ -207,6 +211,10 @@ config_syncd_mlnx()
     echo "DEVICE_MAC_ADDRESS=$MAC_ADDRESS" >> /tmp/sai.profile
     echo "SAI_WARM_BOOT_WRITE_FILE=/var/warmboot/" >> /tmp/sai.profile
 
+    if [[ "$DUAL_TOR" == "enable" ]] && [[ "$DSCP_REMAPPING" == "enable" ]]; then
+       echo "SAI_DSCP_REMAPPING_ENABLED=1" >> /tmp/sai.profile
+    fi
+
     SDK_DUMP_PATH=`cat /tmp/sai.profile|grep "SAI_DUMP_STORE_PATH"|cut -d = -f2`
     if [ ! -d "$SDK_DUMP_PATH" ]; then
         mkdir -p "$SDK_DUMP_PATH"