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

[Xiao Wang]

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.w...@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