[dpdk-dev] [PATCH] af_packet: allow configuring number of rings

[Ferruh Yigit]

On 2/24/2020 11:11 PM, Stephen Hemminger wrote:
> The maximum number of rings in af_packet is hard coded as 16.
> The user should be able to configure this as part of DPDK config.
> 
> Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
> ---
>  config/common_base                        | 1 +
>  drivers/net/af_packet/rte_eth_af_packet.c | 3 +++
>  2 files changed, 4 insertions(+)
> 
> diff --git a/config/common_base b/config/common_base
> index 6ea9c63cc36b..dd154a474b57 100644
> --- a/config/common_base
> +++ b/config/common_base
> @@ -468,6 +468,7 @@ CONFIG_RTE_LIBRTE_VMXNET3_DEBUG_TX_FREE=n
>  # Compile software PMD backed by AF_PACKET sockets (Linux only)
>  #
>  CONFIG_RTE_LIBRTE_PMD_AF_PACKET=n
> +CONFIG_RTE_PMD_AF_PACKET_MAX_RINGS=16
>  

Not sure about adding a new config option for this.

There is already "qpairs" devarg, allocating queues dynamically, instead of
using a per-defined sized arrays, should enable removing
'RTE_PMD_AF_PACKET_MAX_RINGS' completely.