From: Xiao Wang <xiao.w.wang@intel.com>
Date: Wed, 8 Jan 2020 13:37:08 +0000 (-0500)
Subject: net/af_xdp: use single producer/consumer ring
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=489e0b5b33209d929dc490cc591abd840dcefdfc;p=dpdk.git

net/af_xdp: use single producer/consumer ring

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@intel.com>
Tested-by: Ciara Loftus <ciara.loftus@intel.com>
Acked-by: Xiaolong Ye <xiaolong.ye@intel.com>
---

diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c
index d903e6c28a..683e2a5594 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;