virtio: fix crash in secondary process

It needs Rx function even in the case of secondary process,
and it also needs check if it supports mergeable feature or not.

Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>

diff --git a/lib/librte_pmd_virtio/virtio_ethdev.c b/lib/librte_pmd_virtio/virtio_ethdev.c
index 346948f..7b83d9b 100644 (file)
--- a/lib/librte_pmd_virtio/virtio_ethdev.c
+++ b/lib/librte_pmd_virtio/virtio_ethdev.c
@@ -1097,6 +1097,16 @@ virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
 
 }
 
+static void
+rx_func_get(struct rte_eth_dev *eth_dev)
+{
+       struct virtio_hw *hw = eth_dev->data->dev_private;
+       if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
+               eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
+       else
+               eth_dev->rx_pkt_burst = &virtio_recv_pkts;
+}
+
 /*
  * This function is based on probe() function in virtio_pci.c
  * It returns 0 on success.
@@ -1115,8 +1125,10 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
        eth_dev->dev_ops = &virtio_eth_dev_ops;
        eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
 
-       if (rte_eal_process_type() == RTE_PROC_SECONDARY)
+       if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+               rx_func_get(eth_dev);
                return 0;
+       }
 
        /* Allocate memory for storing MAC addresses */
        eth_dev->data->mac_addrs = rte_zmalloc("virtio", ETHER_ADDR_LEN, 0);
@@ -1144,14 +1156,13 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
        vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
        virtio_negotiate_features(hw);
 
+       rx_func_get(eth_dev);
+
        /* Setting up rx_header size for the device */
-       if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
-               eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
+       if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
                hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
-       } else {
-               eth_dev->rx_pkt_burst = &virtio_recv_pkts;
+       else
                hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
-       }
 
        /* Copy the permanent MAC address to: virtio_hw */
        virtio_get_hwaddr(hw);