[dpdk-dev] [PATCH] net/af_xdp: use single-prod-and-cons ring

[Ye Xiaolong]

On 01/08, Xiao Wang wrote:
>The ring is used only by af_xdp pmd itself, so no need to support
>multi-producer and multi-consumer mode. This patch changes the ring
>to single-producer and single-consumer mode, which could yield better
>performance for addr enqueue and dequeue.
>
>Signed-off-by: Xiao Wang <xiao.w.wang at intel.com>
>---
> drivers/net/af_xdp/rte_eth_af_xdp.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c
>index d903e6c28..683e2a559 100644
>--- a/drivers/net/af_xdp/rte_eth_af_xdp.c
>+++ b/drivers/net/af_xdp/rte_eth_af_xdp.c
>@@ -809,7 +809,7 @@ xsk_umem_info *xdp_umem_configure(struct pmd_internals *internals,
> 	umem->buf_ring = rte_ring_create(ring_name,
> 					 ETH_AF_XDP_NUM_BUFFERS,
> 					 rte_socket_id(),
>-					 0x0);
>+					 RING_F_SP_ENQ | RING_F_SC_DEQ);
> 	if (umem->buf_ring == NULL) {
> 		AF_XDP_LOG(ERR, "Failed to create rte_ring\n");
> 		goto err;
>-- 
>2.15.1
>

Acked-by: Xiaolong Ye <xiaolong.ye at intel.com>