Re: [dpdk-dev] [dpdk-stable] [PATCH v3] eventdev: fix Rx adapter event flush logic

[Thomas Monjalon <thomas@monjalon.net>]

Any review please?

10/05/2019 10:08, Nikhil Rao:
> The Rx adapter flushes events only if it has BATCH_SIZE
> events buffered where BATCH_SIZE is set to 32, e.g., if a
> single packet is sent, it is never passed to
> eventdev. Fix this issue by adding an event buffer flush
> either when a Rx queue is found to be empty or the adapter service
> function has processed the max number of packets for an invocation.
> 
> Bugzilla ID: 277
> 
> Fixes: 6b83f5935543 ("eventdev: add event buffer flush in Rx adapter")
> 
> Reported-by: Matias Elo <matias.elo@nokia.com>
> 
> CC: stable@dpdk.org
> 
> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
> ---
>  lib/librte_eventdev/rte_event_eth_rx_adapter.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> v2:
> * add Bugzilla ID
> 
> v3:
> * add stable CC
> * replace boolean check with check for > 0
> 
> diff --git a/lib/librte_eventdev/rte_event_eth_rx_adapter.c b/lib/librte_eventdev/rte_event_eth_rx_adapter.c
> index 8b6e69d..b60674b 100644
> --- a/lib/librte_eventdev/rte_event_eth_rx_adapter.c
> +++ b/lib/librte_eventdev/rte_event_eth_rx_adapter.c
> @@ -872,7 +872,7 @@ static uint16_t rxa_gcd_u16(uint16_t a, uint16_t b)
>  			break;
>  	}
>  
> -	if (buf->count >= BATCH_SIZE)
> +	if (buf->count > 0)
>  		rxa_flush_event_buffer(rx_adapter);
>  
>  	return nb_rx;
>