net/virtio: remove simple Tx path

[dpdk.git] / drivers / net / virtio / virtio_ethdev.c

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 41042cb..73c4287 100644 (file)
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -28,6 +28,7 @@
 #include <rte_eal.h>
 #include <rte_dev.h>
 #include <rte_cycles.h>
+#include <rte_kvargs.h>
 
 #include "virtio_ethdev.h"
 #include "virtio_pci.h"
@@ -1244,6 +1245,9 @@ virtio_notify_peers(struct rte_eth_dev *dev)
                return;
 
        rxvq = dev->data->rx_queues[0];
+       if (!rxvq)
+               return;
+
        rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
                        (struct ether_addr *)hw->mac_addr);
        if (rarp_mbuf == NULL) {
@@ -1316,6 +1320,11 @@ set_rxtx_funcs(struct rte_eth_dev *eth_dev)
                PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u",
                        eth_dev->data->port_id);
                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",
+                       eth_dev->data->port_id);
+               eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts_inorder;
        } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
                PMD_INIT_LOG(INFO,
                        "virtio: using mergeable buffer Rx path on port %u",
@@ -1327,10 +1336,10 @@ set_rxtx_funcs(struct rte_eth_dev *eth_dev)
                eth_dev->rx_pkt_burst = &virtio_recv_pkts;
        }
 
-       if (hw->use_simple_tx) {
-               PMD_INIT_LOG(INFO, "virtio: using simple Tx path on port %u",
+       if (hw->use_inorder_tx) {
+               PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u",
                        eth_dev->data->port_id);
-               eth_dev->tx_pkt_burst = virtio_xmit_pkts_simple;
+               eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder;
        } else {
                PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
                        eth_dev->data->port_id);
@@ -1713,9 +1722,51 @@ eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
        return 0;
 }
 
+static int vdpa_check_handler(__rte_unused const char *key,
+               const char *value, __rte_unused void *opaque)
+{
+       if (strcmp(value, "1"))
+               return -1;
+
+       return 0;
+}
+
+static int
+vdpa_mode_selected(struct rte_devargs *devargs)
+{
+       struct rte_kvargs *kvlist;
+       const char *key = "vdpa";
+       int ret = 0;
+
+       if (devargs == NULL)
+               return 0;
+
+       kvlist = rte_kvargs_parse(devargs->args, NULL);
+       if (kvlist == NULL)
+               return 0;
+
+       if (!rte_kvargs_count(kvlist, key))
+               goto exit;
+
+       /* vdpa mode selected when there's a key-value pair: vdpa=1 */
+       if (rte_kvargs_process(kvlist, key,
+                               vdpa_check_handler, NULL) < 0) {
+               goto exit;
+       }
+       ret = 1;
+
+exit:
+       rte_kvargs_free(kvlist);
+       return ret;
+}
+
 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
        struct rte_pci_device *pci_dev)
 {
+       /* virtio pmd skips probe if device needs to work in vdpa mode */
+       if (vdpa_mode_selected(pci_dev->device.devargs))
+               return 1;
+
        return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
                eth_virtio_dev_init);
 }
@@ -1826,17 +1877,24 @@ virtio_dev_configure(struct rte_eth_dev *dev)
        rte_spinlock_init(&hw->state_lock);
 
        hw->use_simple_rx = 1;
-       hw->use_simple_tx = 1;
+
+       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;
+               }
+       }
 
 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
        if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
                hw->use_simple_rx = 0;
-               hw->use_simple_tx = 0;
        }
 #endif
        if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
-               hw->use_simple_rx = 0;
-               hw->use_simple_tx = 0;
+                hw->use_simple_rx = 0;
        }
 
        if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
@@ -2081,7 +2139,8 @@ virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
        };
 
        host_features = VTPCI_OPS(hw)->get_features(hw);
-       dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
+       dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP |
+                                   DEV_RX_OFFLOAD_CRC_STRIP;
        if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
                dev_info->rx_offload_capa |=
                        DEV_RX_OFFLOAD_TCP_CKSUM |