diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/virtio-net.c | 23 | ||||
| -rw-r--r-- | hw/virtio-net.h | 7 |
2 files changed, 27 insertions, 3 deletions
diff --git a/hw/virtio-net.c b/hw/virtio-net.c index de1f7ce..5eca19c 100644 --- a/hw/virtio-net.c +++ b/hw/virtio-net.c @@ -20,6 +20,7 @@ typedef struct VirtIONet { VirtIODevice vdev; uint8_t mac[6]; + uint16_t status; VirtQueue *rx_vq; VirtQueue *tx_vq; VLANClientState *vc; @@ -42,13 +43,28 @@ static void virtio_net_update_config(VirtIODevice *vdev, uint8_t *config) VirtIONet *n = to_virtio_net(vdev); struct virtio_net_config netcfg; + netcfg.status = n->status; memcpy(netcfg.mac, n->mac, 6); memcpy(config, &netcfg, sizeof(netcfg)); } +static void virtio_net_set_link_status(VLANClientState *vc) +{ + VirtIONet *n = vc->opaque; + uint16_t old_status = n->status; + + if (vc->link_down) + n->status &= ~VIRTIO_NET_S_LINK_UP; + else + n->status |= VIRTIO_NET_S_LINK_UP; + + if (n->status != old_status) + virtio_notify_config(&n->vdev); +} + static uint32_t virtio_net_get_features(VirtIODevice *vdev) { - uint32_t features = (1 << VIRTIO_NET_F_MAC); + uint32_t features = (1 << VIRTIO_NET_F_MAC) | (1 << VIRTIO_NET_F_STATUS); return features; } @@ -307,7 +323,8 @@ PCIDevice *virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn) n = (VirtIONet *)virtio_init_pci(bus, "virtio-net", 6900, 0x1000, 0, VIRTIO_ID_NET, 0x02, 0x00, 0x00, - 6, sizeof(VirtIONet)); + sizeof(struct virtio_net_config), + sizeof(VirtIONet)); if (!n) return NULL; @@ -317,8 +334,10 @@ PCIDevice *virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn) n->rx_vq = virtio_add_queue(&n->vdev, 256, virtio_net_handle_rx); n->tx_vq = virtio_add_queue(&n->vdev, 256, virtio_net_handle_tx); memcpy(n->mac, nd->macaddr, 6); + n->status = VIRTIO_NET_S_LINK_UP; n->vc = qemu_new_vlan_client(nd->vlan, nd->model, nd->name, virtio_net_receive, virtio_net_can_receive, n); + n->vc->link_status_changed = virtio_net_set_link_status; qemu_format_nic_info_str(n->vc, n->mac); diff --git a/hw/virtio-net.h b/hw/virtio-net.h index 0d9f71b..9ac9e34 100644 --- a/hw/virtio-net.h +++ b/hw/virtio-net.h @@ -37,16 +37,21 @@ #define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */ #define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */ #define VIRTIO_NET_F_MRG_RXBUF 15 /* Host can merge receive buffers. */ +#define VIRTIO_NET_F_STATUS 16 /* virtio_net_config.status available */ + +#define VIRTIO_NET_S_LINK_UP 1 /* Link is up */ #define TX_TIMER_INTERVAL 150000 /* 150 us */ /* Maximum packet size we can receive from tap device: header + 64k */ #define VIRTIO_NET_MAX_BUFSIZE (sizeof(struct virtio_net_hdr) + (64 << 10)) -/* The config defining mac address (6 bytes) */ struct virtio_net_config { + /* The config defining mac address (6 bytes) */ uint8_t mac[6]; + /* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */ + uint16_t status; } __attribute__((packed)); /* This is the first element of the scatter-gather list. If you don't |