Re: [dpdk-dev] [PATCH] config: update MAX_FRAG to support jumbo packets

["Ananyev, Konstantin" <konstantin.ananyev@intel.com>]

> 
> RTE_LIBRTE_IP_FRAG_MAX_FRAG flag value increased from 4 to 8. By this
> pkt size greater than 6000 is supported in ip-fragmentation and
> ip-reassembly.
> 
> Fixes: 9788b93b9d5 ("config: MAX_FRAG updated to support the jumbo
> packets")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
> ---
>  config/common_base  | 2 +-
>  config/rte_config.h | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/config/common_base b/config/common_base
> index e231384e88..be4a6bafb5 100644
> --- a/config/common_base
> +++ b/config/common_base
> @@ -950,7 +950,7 @@ CONFIG_RTE_LIBRTE_NET=y
>  #
>  CONFIG_RTE_LIBRTE_IP_FRAG=y
>  CONFIG_RTE_LIBRTE_IP_FRAG_DEBUG=n
> -CONFIG_RTE_LIBRTE_IP_FRAG_MAX_FRAG=4
> +CONFIG_RTE_LIBRTE_IP_FRAG_MAX_FRAG=8
>  CONFIG_RTE_LIBRTE_IP_FRAG_TBL_STAT=n
> 
>  #
> diff --git a/config/rte_config.h b/config/rte_config.h
> index d30786bc08..f5cdc3ddbe 100644
> --- a/config/rte_config.h
> +++ b/config/rte_config.h
> @@ -82,7 +82,7 @@
>  #define RTE_RAWDEV_MAX_DEVS 64
> 
>  /* ip_fragmentation defines */
> -#define RTE_LIBRTE_IP_FRAG_MAX_FRAG 4
> +#define RTE_LIBRTE_IP_FRAG_MAX_FRAG 8
>  #undef RTE_LIBRTE_IP_FRAG_TBL_STAT

Not sure it is a good idea - it will double size of reassembly table
(and number of required mbufs) for users who use default value. 
The proper way would be, I think to restructure reassemble code,
to make max_frag_num an extra parameter for rte_ip_frag_table_create(). 

> 
>  /* rte_power defines */
> --
> 2.17.1