Re: [PATCH v3] Ifconfig : Fixed False information about Media State.

["Carsey, Jaben" <jaben.carsey@intel.com>]

Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Do you know under what conditions the API will fail? Is it worth saying something like media stats unknown when the function fails?

Ray,

What do you think?


> -----Original Message-----
> From: Meenakshi Aggarwal [mailto:meenakshi.aggarwal@nxp.com]
> Sent: Thursday, October 05, 2017 9:48 PM
> To: edk2-devel@lists.01.org; Wu, Jiaxin <jiaxin.wu@intel.com>; Carsey,
> Jaben <jaben.carsey@intel.com>; Ni, Ruiyu <ruiyu.ni@intel.com>
> Cc: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
> Subject: [PATCH v3] Ifconfig : Fixed False information about Media State.
> Importance: High
> 
> Issue : We were setting MediaPresent as TRUE (default) and
> not checking return status of NetLibDetectMedia().
> NetLibDetectMedia() sets MediaPresent FLAG in case of success
> only and dont change flag on error.
> So, Media State will display as 'Media Present', in case of
> error also.
> 
> Fix : Check return value of NetLibDetectMedia()
> 
> Contributed-under: TianoCore Contribution Agreement 1.1
> 
> Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
> ---
>  ShellPkg/Library/UefiShellNetwork1CommandsLib/Ifconfig.c | 11 +++++++--
> --
>  1 file changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/ShellPkg/Library/UefiShellNetwork1CommandsLib/Ifconfig.c
> b/ShellPkg/Library/UefiShellNetwork1CommandsLib/Ifconfig.c
> index 4db07b2..90ca724 100644
> --- a/ShellPkg/Library/UefiShellNetwork1CommandsLib/Ifconfig.c
> +++ b/ShellPkg/Library/UefiShellNetwork1CommandsLib/Ifconfig.c
> @@ -576,11 +576,14 @@ IfConfigShowInterfaceInfo (
>      //
>      // Get Media State.
>      //
> -    NetLibDetectMedia (IfCb->NicHandle, &MediaPresent);
> -    if (!MediaPresent) {
> -      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN
> (STR_IFCONFIG_INFO_MEDIA_STATE), gShellNetwork1HiiHandle, L"Media
> disconnected");
> +    if (EFI_SUCCESS == NetLibDetectMedia (IfCb->NicHandle,
> &MediaPresent)) {
> +      if (!MediaPresent) {
> +        ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN
> (STR_IFCONFIG_INFO_MEDIA_STATE), gShellNetwork1HiiHandle, L"Media
> disconnected");
> +      } else {
> +        ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN
> (STR_IFCONFIG_INFO_MEDIA_STATE), gShellNetwork1HiiHandle, L"Media
> present");
> +      }
>      } else {
> -      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN
> (STR_IFCONFIG_INFO_MEDIA_STATE), gShellNetwork1HiiHandle, L"Media
> present");
> +      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN
> (STR_IFCONFIG_INFO_MEDIA_STATE), gShellNetwork1HiiHandle, L"Media
> disconnected");
>      }
> 
>      //
> --
> 2.7.4