[dpdk-dev] [PATCH 3/3] net/virtio: add non-mergeable support to in-order path

[Maxime Coquelin <maxime.coquelin@redhat.com>]

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 drivers/net/virtio/virtio_ethdev.c | 11 +++--------
 drivers/net/virtio/virtio_ethdev.h |  2 +-
 drivers/net/virtio/virtio_rxtx.c   | 10 +++++++---
 3 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 9658b179a..6670bf1ec 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1332,9 +1332,9 @@ set_rxtx_funcs(struct rte_eth_dev *eth_dev)
 		eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
 	} else if (hw->use_inorder_rx) {
 		PMD_INIT_LOG(INFO,
-			"virtio: using inorder mergeable buffer Rx path on port %u",
+			"virtio: using in-order Rx path on port %u",
 			eth_dev->data->port_id);
-		eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts_inorder;
+		eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder;
 	} else {
 		PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
 			eth_dev->data->port_id);
@@ -1901,12 +1901,7 @@ virtio_dev_configure(struct rte_eth_dev *dev)
 
 	if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) {
 		hw->use_inorder_tx = 1;
-		if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
-			hw->use_inorder_rx = 1;
-			hw->use_simple_rx = 0;
-		} else {
-			hw->use_inorder_rx = 0;
-		}
+		hw->use_inorder_rx = 1;
 	}
 
 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
diff --git a/drivers/net/virtio/virtio_ethdev.h b/drivers/net/virtio/virtio_ethdev.h
index 865863300..96b4928e9 100644
--- a/drivers/net/virtio/virtio_ethdev.h
+++ b/drivers/net/virtio/virtio_ethdev.h
@@ -74,7 +74,7 @@ int virtio_dev_tx_queue_setup_finish(struct rte_eth_dev *dev,
 uint16_t virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 		uint16_t nb_pkts);
 
-uint16_t virtio_recv_mergeable_pkts_inorder(void *rx_queue,
+uint16_t virtio_recv_pkts_inorder(void *rx_queue,
 		struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
 
 uint16_t virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c
index 331c1c56d..ab472b01f 100644
--- a/drivers/net/virtio/virtio_rxtx.c
+++ b/drivers/net/virtio/virtio_rxtx.c
@@ -884,7 +884,7 @@ virtio_rx_offload(struct rte_mbuf *m, struct virtio_net_hdr *hdr)
 
 #define VIRTIO_MBUF_BURST_SZ 64
 uint16_t
-virtio_recv_mergeable_pkts_inorder(void *rx_queue,
+virtio_recv_pkts_inorder(void *rx_queue,
 			struct rte_mbuf **rx_pkts,
 			uint16_t nb_pkts)
 {
@@ -941,10 +941,14 @@ virtio_recv_mergeable_pkts_inorder(void *rx_queue,
 		header = (struct virtio_net_hdr_mrg_rxbuf *)
 			 ((char *)rxm->buf_addr + RTE_PKTMBUF_HEADROOM
 			 - hdr_size);
-		seg_num = header->num_buffers;
 
-		if (seg_num == 0)
+		if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
+			seg_num = header->num_buffers;
+			if (seg_num == 0)
+				seg_num = 1;
+		} else {
 			seg_num = 1;
+		}
 
 		rxm->data_off = RTE_PKTMBUF_HEADROOM;
 		rxm->nb_segs = seg_num;
-- 
2.17.2