X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Flibraries%2Frobot%2Fshared%2Finterfaces.robot;h=4f15d5c9be19d035b0ab30ea3f8986a26be85b0c;hp=a90537340142db3cbe4fc866bc629b4392138e49;hb=1fd3d96de221e7bf281f7ce96dc5cad0170a602d;hpb=d6604cd860130f3d0520acefc1a0ced70e231b8c

diff --git a/resources/libraries/robot/shared/interfaces.robot b/resources/libraries/robot/shared/interfaces.robot
index a905373401..4f15d5c9be 100644
--- a/resources/libraries/robot/shared/interfaces.robot
+++ b/resources/libraries/robot/shared/interfaces.robot
@@ -853,3 +853,23 @@
 | |
 | | ${vhost_dump}= | Vhost User Dump | ${dut}
 | | Return From Keyword | ${vhost_dump}
+
+| Lower DUT1-DUT2 MTU For Fragmentation
+| | [Documentation] | Set lower MTU on both ends of DUT1-DUT2 link.
+| |
+| | ... | This should force VPP to fragment (and reassembly) packets.
+| | ... | Should be called after Initialize Layer Interface.
+| | ... | Suite variables such as \${dut2_if1} should be defined by then.
+| |
+| | ... | As VPP (at least dpdk plugin) require interface to be down
+| | ... | before MTU can be changed, interfaces are temporarily downed.
+| |
+| | # TODO: ip_reassembly_set to increase max_reassembly_length so jumbo passes.
+| | Set Interface State | ${nodes['DUT1']} | ${dut1_if2} | down
+| | Set Interface State | ${nodes['DUT2']} | ${dut2_if1} | down
+| | VPP Set Interface MTU
+| | ... | ${nodes['DUT1']} | ${dut1_if2} | ${MTU_FOR_FRAGMENTATION}
+| | VPP Set Interface MTU
+| | ... | ${nodes['DUT2']} | ${dut2_if1} | ${MTU_FOR_FRAGMENTATION}
+| | Set Interface State | ${nodes['DUT1']} | ${dut1_if2} | up
+| | Set Interface State | ${nodes['DUT2']} | ${dut2_if1} | up