static void virtio_net_disconnect(struct virtio_device *dev)
{
struct virtio_net_dev *ndev = dev->emu_data;
vmm_netport_unregister(ndev->port);
vmm_netport_free(ndev->port);
vmm_free(ndev);
}
static int virtio_net_connect(struct virtio_device *dev,
struct virtio_emulator *emu)
{
int i, rc;
char *attr;
struct virtio_net_dev *ndev;
struct vmm_netswitch *nsw;
ndev = vmm_zalloc(sizeof(struct virtio_net_dev));
if (!ndev) {
vmm_printf("Failed to allocate virtio net device....\n");
return VMM_EFAIL;
}
ndev->vdev = dev;
vmm_snprintf(ndev->name, VIRTIO_DEVICE_MAX_NAME_LEN, "%s", dev->name);
ndev->port = vmm_netport_alloc(ndev->name, VMM_NETPORT_DEF_QUEUE_SIZE);
ndev->port->mtu = VIRTIO_NET_MTU;
ndev->port->link_changed = virtio_net_set_link;
ndev->port->can_receive = virtio_net_can_receive;
ndev->port->switch2port_xfer = virtio_net_switch2port_xfer;
ndev->port->priv = ndev;
rc = vmm_netport_register(ndev->port);
if (rc) {
vmm_netport_free(ndev->port);
vmm_free(ndev);
return rc;
}
attr = vmm_devtree_attrval(dev->edev->node, "switch");
if (attr) {
nsw = vmm_netswitch_find((char *)attr);
if (!nsw) {
vmm_printf("%s: Cannot find netswitch \"%s\"\n",
__func__, (char *)attr);
} else {
vmm_netswitch_port_add(nsw, ndev->port);
}
}
for (i = 0; i < 6; i++) {
ndev->config.mac[i] = vmm_netport_mac(ndev->port)[i];
}
ndev->config.status = VIRTIO_NET_S_LINK_UP;
dev->emu_data = ndev;
return VMM_OK;
}
static void __exit lwip_netstack_exit(void)
{
vmm_netport_unregister(lns.port);
vmm_netport_free(lns.port);
}
static int __init lwip_netstack_init(void)
{
int rc;
struct vmm_netswitch *nsw;
struct vmm_devtree_node *node;
const char *str;
u8 ip[] = {169, 254, 1, 1};
u8 mask[] = {255, 255, 255, 0};
ip_addr_t __ip, __nm, __gw;
/* Clear lwIP state */
memset(&lns, 0, sizeof(lns));
/* Get netstack device tree node if available */
node = vmm_devtree_getnode(VMM_DEVTREE_PATH_SEPARATOR_STRING
VMM_DEVTREE_VMMINFO_NODE_NAME
VMM_DEVTREE_PATH_SEPARATOR_STRING
VMM_DEVTREE_VMMNET_NODE_NAME
VMM_DEVTREE_PATH_SEPARATOR_STRING
VMM_DEVTREE_NETSTACK_NODE_NAME);
/* Retrive preferred IP address */
if (vmm_devtree_read_string(node, "ipaddr", &str) == VMM_OK) {
/* Read ip address from netstack node */
str2ipaddr(ip, str);
}
/* Retrive preferred IP address */
if (vmm_devtree_read_string(node, "netmask", &str) == VMM_OK) {
/* Read network mask from netstack node */
str2ipaddr(mask, str);
}
/* Retrive preferred netswitch */
if (vmm_devtree_read_string(node, "netswitch", &str) == VMM_OK) {
/* Find netswitch with given name */
nsw = vmm_netswitch_find(str);
} else {
/* Get default netswitch */
nsw = vmm_netswitch_default();
}
if (!nsw) {
vmm_panic("%s: No netswitch found\n", __func__);
}
/* Release netstack device tree node */
vmm_devtree_dref_node(node);
/* Allocate a netport */
lns.port = vmm_netport_alloc("lwip-netport", VMM_NETPORT_DEF_QUEUE_SIZE);
if (!lns.port) {
vmm_printf("%s: vmm_netport_alloc() failed\n", __func__);
rc = VMM_ENOMEM;
goto fail;
}
/* Setup a netport */
lns.port->mtu = 1500;
lns.port->link_changed = lwip_set_link;
lns.port->can_receive = lwip_can_receive;
lns.port->switch2port_xfer = lwip_switch2port_xfer;
lns.port->priv = &lns;
/* Register a netport */
rc = vmm_netport_register(lns.port);
if (rc) {
goto fail1;
}
/* Initialize lwIP + TCP/IP APIs */
tcpip_init(NULL, NULL);
/* Add netif */
IP4_ADDR(&__ip, ip[0],ip[1],ip[2],ip[3]);
IP4_ADDR(&__nm, mask[0],mask[1],mask[2],mask[3]);
IP4_ADDR(&__gw, ip[0],ip[1],ip[2],ip[3]);
netif_add(&lns.nif, &__ip, &__nm, &__gw, &lns,
lwip_netstack_netif_init, ethernet_input);
/* Set default netif */
netif_set_default(&lns.nif);
/* Attach netport with netswitch
* Note: This will cause netport link_change()
*/
rc = vmm_netswitch_port_add(nsw, lns.port);
if (rc) {
goto fail2;
}
#if !defined(PING_USE_SOCKETS)
/* Initalize RAW PCB for ping */
ping_raw_init();
#endif
return VMM_OK;
fail2:
vmm_netport_unregister(lns.port);
fail1:
vmm_netport_free(lns.port);
fail:
return rc;
}
