Improve 1n-skx vpp_device mapping function

Improve mapping function for 1n-skx vpp_device to pickup
available DUT1 net_dev and replace the name with TG net_dev prefix.
This way we can eliminate situation, when pair with not equal VLANs
are picked.

Change-Id: If78329e730bfb4df34fb8d8924c8715d69a15e0c
Signed-off-by: Peter Mikus <pmikus@cisco.com>
(cherry picked from commit 1c108d51c08631548dc2b2ba1b7652e0b577d82c)
(cherry picked from commit 44bc8611bca15c49663a89cfb29cf0ec1a5ed17e)

1 files changed, 20 insertions, 6 deletions

diff --git a/resources/libraries/bash/function/device.sh b/resources/libraries/bash/function/device.sh
index 7d175a9ac3..dce7c7f004 100644
--- a/resources/libraries/bash/function/device.sh
+++ b/resources/libraries/bash/function/device.sh
@@ -298,12 +298,26 @@ function get_available_interfaces () {
         fi
     done
 
-    for netdev in "${tg_side[@]::2}"; do
-        TG_NETDEVS+=(${netdev})
-    done
-    for netdev in "${dut1_side[@]::2}"; do
-        DUT1_NETDEVS+=(${netdev})
-    done
+    case "${case_text}" in
+        "1n_skx")
+            # Pick up first two DUT1 interfaces binded to i40evf.
+            for netdev in "${dut1_side[@]::2}"; do
+                DUT1_NETDEVS+=(${netdev})
+            done
+            # Corresponding TG interfaces will be same ID.SUB_ID, but on
+            # opposite linked device.
+            for netdev in "${DUT1_NETDEVS[@]}"; do
+                TG_NETDEVS+=(${netdev/$dut1_netdev/$tg_netdev})
+            done
+            ;;
+        *)
+            for netdev in "${tg_side[@]::2}"; do
+                TG_NETDEVS+=(${netdev})
+            done
+            for netdev in "${dut1_side[@]::2}"; do
+                DUT1_NETDEVS+=(${netdev})
+            done
+    esac
 
     for NETDEV in "${TG_NETDEVS[@]}"; do
         get_pci_addr