On 2016/02/05 20:20, Jianfeng Tan wrote:

To implement virtio vdev, we need way to interract with vhost backend.
And more importantly, needs way to emulate a device into DPDK. So this
patch acts as embedded device emulation.

Depends on the type of vhost file: vhost-user is used if the given
path points to a unix socket; vhost-net is used if the given path
points to a char device.

Signed-off-by: Huawei Xie <redacted>
Signed-off-by: Jianfeng Tan <redacted>
---
 
+void
+virtio_vdev_init(struct rte_eth_dev_data *data, char *path,
+		 int nb_rx, int nb_tx, int nb_cq __attribute__ ((unused)),
+		 int queue_num, char *mac, char *ifname)
+{
+	int i, r;
+	struct stat s;
+	uint32_t tmp[ETHER_ADDR_LEN];
+	struct virtio_hw *hw = data->dev_private;
+
+	hw->vtpci_ops = &vdev_ops;
+	hw->io_base  = 0;
+	hw->use_msix = 0;
+	hw->modern   = 0;
+
+	hw->data = data;
+	hw->path = strdup(path);
+	hw->max_rx_queues = nb_rx;
+	hw->max_tx_queues = nb_tx;
+	hw->queue_num = queue_num;
+	hw->mac_specified = 0;
+	if (mac) {
+		r = sscanf(mac, "%x:%x:%x:%x:%x:%x", &tmp[0],
+			   &tmp[1], &tmp[2], &tmp[3], &tmp[4], &tmp[5]);
+		if (r == ETHER_ADDR_LEN) {
+			for (i = 0; i < ETHER_ADDR_LEN; ++i)
+				hw->mac_addr[i] = (uint8_t)tmp[i];
+			hw->mac_specified = 1;
+		} else
+			PMD_DRV_LOG(WARN, "wrong format of mac: %s", mac);

It seems you cannot use 'WARN' here.

Thanks,
Tetsuya