[dpdk-dev] [PATCH v3] examples/l2fwd-event: add option to configure port pairs

[Andrzej Ostruszka]

On 3/31/20 2:53 PM, pbhagavatula at marvell.com wrote:
> From: Pavan Nikhilesh <pbhagavatula at marvell.com>
> 
> Current l2fwd-event application statically configures adjacent ports as
> destination ports for forwarding the traffic.
> 
> Add a config option to pass the forwarding port pair mapping which allows
> the user to configure forwarding port mapping.
> 
> If no config argument is specified, destination port map is not
> changed and traffic gets forwarded with existing mapping.
> 
> To align port/queue configuration of each lcore with destination port
> map, port/queue configuration of each lcore gets modified when config
> option is specificed.
> 
> Ex: ./l2fwd-event -c 0xff -- -p 0x3f -q 2 --config="(0,3)(1,4)(2,5)"
> 
> With above config option, traffic received from portid = 0 gets forwarded
> to port = 3 and vice versa, similarly traffic gets forwarded on other port
> pairs (1,4) and (2,5).
> 
> Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>
> ---
>  v3 Changes:
>   - Use simple memcpy instead of snprintf. (Andrzej)
>   - Skip redudant loop iterations. (Andrzej)
>   - Use RTE_MAX_ETHPORTS instead of hardcoding to 255. (Andrzej)
> 
>  v2 Changes:
>   - Fix minor formatting error.
>   - Change uint8_t to bool.

Reviewed-by: Andrzej Ostruszka <aostruszka at marvell.com>