[dts] [PATCH] framework/dut.py: pull the name after bound the interface to kernel driver

[Tu, Lijuan]

Applied, thanks

> -----Original Message-----
> From: dts [mailto:dts-bounces at dpdk.org] On Behalf Of michael.luo at intel.com
> Sent: Tuesday, March 12, 2019 4:49 PM
> To: dts at dpdk.org
> Subject: [dts] [PATCH] framework/dut.py: pull the name after bound the
> interface to kernel driver
> 
> From: Luo Gaoliang <michael.luo at intel.com>
> 
> When restoring the interface, it will do unbinding, then bind the interface with
> the kernel driver, it's better to pull the interface name with 1s interval.
> Because on some system, especially on VMs, if try to get the name immediately
> after bind the interface with the driver, it may not be ready in its sysfs.
> 
> Signed-off-by: Luo Gaoliang <michael.luo at intel.com>
> ---
>  framework/dut.py | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/framework/dut.py b/framework/dut.py index ab0eb32..541ab7b
> 100644
> --- a/framework/dut.py
> +++ b/framework/dut.py
> @@ -281,8 +281,18 @@ class Dut(Crb):
>                  self.send_expect('modprobe %s' % driver, '# ')
>                  self.send_expect('echo %s > /sys/bus/pci/drivers/%s/bind'
>                                   % (pci_bus, driver), '# ')
> -                itf = port.get_interface_name()
> -                self.send_expect("ifconfig %s up" % itf, "# ")
> +                pull_retries = 5
> +                while pull_retries > 0:
> +                    itf = port.get_interface_name()
> +                    if itf == 'N/A':
> +                        time.sleep(1)
> +                        pull_retries -= 1
> +                    else:
> +                        break
> +                if itf == 'N/A':
> +                    self.logger.warning("Fail to bind the device with the linux driver")
> +                else:
> +                    self.send_expect("ifconfig %s up" % itf, "# ")
>              else:
>                  self.logger.info("NOT FOUND DRIVER FOR PORT (%s|%s)!!!" %
> (pci_bus, pci_id))
> 
> --
> 2.7.4