[dpdk-dev] [PATCH RFC 1/3] net/af_xdp: Increase max batch size to 512

[Ciara Loftus <ciara.loftus@intel.com>]

Prior to this the max size was 32 which was unnecessarily
small. Also enforce the max batch size for TX for both
copy and zero copy modes. Prior to this only copy mode
enforced the max size.

Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
---
 drivers/net/af_xdp/rte_eth_af_xdp.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c
index b8d5ad0d91..b51db90204 100644
--- a/drivers/net/af_xdp/rte_eth_af_xdp.c
+++ b/drivers/net/af_xdp/rte_eth_af_xdp.c
@@ -66,8 +66,8 @@ RTE_LOG_REGISTER(af_xdp_logtype, pmd.net.af_xdp, NOTICE);
 #define ETH_AF_XDP_DFLT_START_QUEUE_IDX	0
 #define ETH_AF_XDP_DFLT_QUEUE_COUNT	1
 
-#define ETH_AF_XDP_RX_BATCH_SIZE	32
-#define ETH_AF_XDP_TX_BATCH_SIZE	32
+#define ETH_AF_XDP_RX_BATCH_SIZE	512
+#define ETH_AF_XDP_TX_BATCH_SIZE	512
 
 
 struct xsk_umem_info {
@@ -535,8 +535,6 @@ af_xdp_tx_cp(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 	uint32_t idx_tx;
 	struct xsk_ring_cons *cq = &txq->pair->cq;
 
-	nb_pkts = RTE_MIN(nb_pkts, ETH_AF_XDP_TX_BATCH_SIZE);
-
 	pull_umem_cq(umem, nb_pkts, cq);
 
 	nb_pkts = rte_ring_dequeue_bulk(umem->buf_ring, addrs,
@@ -580,6 +578,8 @@ af_xdp_tx_cp(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 static uint16_t
 eth_af_xdp_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 {
+	nb_pkts = RTE_MIN(nb_pkts, ETH_AF_XDP_TX_BATCH_SIZE);
+
 #if defined(XDP_UMEM_UNALIGNED_CHUNK_FLAG)
 	return af_xdp_tx_zc(queue, bufs, nb_pkts);
 #else
-- 
2.17.1