X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Flibraries%2Frobot%2Finterfaces.robot;h=60e1480633460cead25df74bc4bd9da369945300;hp=18c9c0cc819150a02da5346fc7f1e63c56f56f87;hb=a175e259c6a83aea6df61eed607f8c57671c8ea0;hpb=33499c81c94c2d3baef9d3e9f061cd76ef86fa74

diff --git a/resources/libraries/robot/interfaces.robot b/resources/libraries/robot/interfaces.robot
index 18c9c0cc81..60e1480633 100644
--- a/resources/libraries/robot/interfaces.robot
+++ b/resources/libraries/robot/interfaces.robot
@@ -11,6 +11,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 *** Settings ***
+| Library | resources.libraries.python.InterfaceUtil
+| Library | resources.libraries.python.NodePath
 | Resource | resources/libraries/robot/vat/interfaces.robot
 
 *** Keywords ***
@@ -18,3 +20,17 @@
 | | VPP reports interfaces through VAT on | ${node}
 #| | VPP reports interfaces through ODL on | ${node}
 #| | VPP reports interfaces through DEBUGCLI on | ${node}
+
+| Setup MTU on TG based on MTU on DUT
+| | [Documentation] | Type of the tg_node must be TG and dut_node must be DUT
+| | [Arguments] | ${tg_node} | ${dut_node}
+| | Append Nodes | ${tg_node} | ${dut_node}
+| | Compute Path
+| | ${tg_port} | ${tg_node}= | First Interface
+| | ${dut_port} | ${dut_node}= | Last Interface
+| | # get physical layer MTU (max. size of Ethernet frame)
+| | ${mtu}= | Get Interface MTU | ${dut_node} | ${dut_port}
+| | # Ethernet MTU is physical layer MTU minus size of Ethernet header and FCS
+| | ${eth_mtu}= | Evaluate | ${mtu} - 14 - 4
+| | Set Interface Ethernet MTU | ${tg_node} | ${tg_port} | ${eth_mtu}
+