From: Ciara Loftus <ciara.loftus@intel.com>
Date: Thu, 25 Jun 2020 13:39:50 +0000 (+0000)
Subject: net/af_xdp: revert to MP/MC ring for copy mode
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=5b2baff902e0e0815d860ae912d36c0c3fca37fb;p=dpdk.git

net/af_xdp: revert to MP/MC ring for copy mode

This reverts commit 489e0b5b33209d929dc490cc591abd840dcefdfc.

The ring used in copy mode should be multi-producer multi-consumer
because enqueues and dequeues to the ring are performed on both the rx
and tx paths, which can be running on different threads.

Fixes: 489e0b5b3320 ("net/af_xdp: use single producer/consumer ring")
Cc: stable@dpdk.org

Signed-off-by: Ciara Loftus <ciara.loftus@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 2d69221c1b..d4a421e636 100644
--- a/drivers/net/af_xdp/rte_eth_af_xdp.c
+++ b/drivers/net/af_xdp/rte_eth_af_xdp.c
@@ -824,7 +824,7 @@ 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(),
-					 RING_F_SP_ENQ | RING_F_SC_DEQ);
+					 0x0);
 	if (umem->buf_ring == NULL) {
 		AF_XDP_LOG(ERR, "Failed to create rte_ring\n");
 		goto err;