[dpdk-dev] [PATCH] net/sfc: fix minimum number of Rx descriptors in ESSB mode

[Ferruh Yigit]

On 5/16/2018 1:35 PM, Andrew Rybchenko wrote:
> Number of descriptors in equal stride super-buffer Rx mode defines
> number of packet buffers to be used. Each HW Rx descriptor has
> many packet buffers and the number depends on total size of mbuf
> and CONFIG_RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB value.
> Typically it makes a bit less than 32 buffers per descriptor.
> Since HW Rx descriptors must be pushed by 8, it makes about 256
> as required minimum. Double it in advertised minimum to allow for
> at least 2 refill blocks.
> 
> Fixes: 390f9b8d82c9 ("net/sfc: support equal stride super-buffer Rx mode")
> 
> Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>

Applied to dpdk-next-net/master, thanks.