Re: [dpdk-dev] [PATCH v2] app/testpmd: fix segment number check

["Li, Xiaoyun" <xiaoyun.li@intel.com>]

Hi

> -----Original Message-----
> From: Yigit, Ferruh <ferruh.yigit@intel.com>
> Sent: Saturday, April 24, 2021 00:10
> To: Viacheslav Ovsiienko <viacheslavo@nvidia.com>; Li, Xiaoyun
> <xiaoyun.li@intel.com>; Wei Hu (Xavier) <xavier.huwei@huawei.com>;
> Chengchang Tang <tangchengchang@huawei.com>
> Cc: Yigit, Ferruh <ferruh.yigit@intel.com>; dev@dpdk.org; stable@dpdk.org;
> Andrew Boyer <aboyer@pensando.io>
> Subject: [PATCH v2] app/testpmd: fix segment number check
> 
> From: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
> 
> The --txpkts command line parameter was silently ignored due to application
> was unable to check the Tx queue ring sizes for non configured ports [1].

Remove this [1] or mark the following items as [1] [2] [3].

> 
> The "set txpkts <len0[,len1]*>" was also rejected if there was some stopped or
> /unconfigured port.
> 
> This provides the following:
> 
>   - If fails to get ring size from the port, this can be because port is
>     not initialized yet, ignore the check and just be sure segment size
>     won't cause an out of bound access. The port descriptor check will
>     be done during Tx setup.
> 
>   - The capability to send single packet is supposed to be very basic
>     and always supported, the setting segment number to 1 is always
>     allowed, no check performed
> 
>   - At the moment of Tx queue setup the descriptor number is checked
>     against configured segment number
> 
> Bugzilla ID: 584
> Fixes: 8dae835d88b7 ("app/testpmd: remove restriction on Tx segments set")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
> Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
> ---
> Cc: Andrew Boyer <aboyer@pensando.io>
> 
> v2:
> * Become more flexible for the '--txpkts' command line, if not able to
>   get the descriptor size from port, ignore the check.
> 
>   ('nb_txd' check was proposed before, this will require '--txd'
>   parameter, but also enforces a specific order on the parameters,
>   instead going with the option to flex the checks for parameter.)
> ---
>  app/test-pmd/cmdline.c |  4 ++++
>  app/test-pmd/config.c  | 32 ++++++++++++++++++++++++--------
>  2 files changed, 28 insertions(+), 8 deletions(-)

Except the one comment above for commit log,
Acked-by: Xiaoyun Li <xiaoyun.li@intel.com>