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HomeDefectsLIN9-2320

Not to be fixed

LIN9-2320 : xilinx-zynqmp : system can not change MTU while device is up,but ubuntu is ok

Created: Nov 21, 2016 Updated: Mar 6, 2019

Resolved Date: Feb 19, 2019

Found In Version: unknown

Severity: Standard

Applicable for: Wind River Linux 9

Component/s: BSP

Description

While network device is up,  system can not change the MTU. unless, do  " ifconfig eth0 down" before.

ubuntu can change MTU when device is up.

<< [do_test1] start Jump frame testing,change MTU for eth0>>
********************
root@zcu102:/opt/wr-test/testcases/bts/ethernet_jump_frame# ifconfig eth0 mtu 3000 up
SIOCSIFMTU: Device or resource busy
root@zcu102:/opt/wr-test/testcases/bts/ethernet_jump_frame# ifconfig eth0 mtu 3000 up
SIOCSIFMTU: Device or resource busy
<<end Jump frame testing,change MTU for eth0>>

Steps to Reproduce

Project Build:
----------------------
    --machines=xilinx-zynqmp --kernel=standard --machines=xilinx-zynqmp --kernel=standard --dl-layers --dl-layers
    Build Steps:
    . environment-setup-x86_64-wrlinuxsdk-linux
    . oe-init-build-env
    Add BTS layer  
    1.bitbake-layers add-layer <path to wr-testing/bts-dev>
    2.echo "require templates/feature/bts/template.conf" >> conf/local.conf
    3.bitbake wrlinux-image-glibc-std

Target:
ifconfig eth0 mtu 3000 up