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net: introduce qemu_get_nic()

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To support multiqueue, this patch introduces a helper qemu_get_nic() to get
NICState from a NetClientState. The following patches would refactor this helper
to support multiqueue.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Jason Wang 2013-01-30 19:12:23 +08:00 • committed by Anthony Liguori
parent b356f76de3
commit cc1f0f4542
28 changed files with 92 additions and 78 deletions
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10
hw/virtio-net.c
View file

@ -170,7 +170,7 @@ static void virtio_net_set_status(struct VirtIODevice *vdev, uint8_t status)
static void virtio_net_set_link_status(NetClientState *nc)
{
VirtIONet *n = DO_UPCAST(NICState, nc, nc)->opaque;
VirtIONet *n = qemu_get_nic_opaque(nc);
uint16_t old_status = n->status;
if (nc->link_down)
@ -506,7 +506,7 @@ static void virtio_net_handle_rx(VirtIODevice *vdev, VirtQueue *vq)
static int virtio_net_can_receive(NetClientState *nc)
{
VirtIONet *n = DO_UPCAST(NICState, nc, nc)->opaque;
VirtIONet *n = qemu_get_nic_opaque(nc);
if (!n->vdev.vm_running) {
return 0;
}
@ -637,7 +637,7 @@ static int receive_filter(VirtIONet *n, const uint8_t *buf, int size)
static ssize_t virtio_net_receive(NetClientState *nc, const uint8_t *buf, size_t size)
{
VirtIONet *n = DO_UPCAST(NICState, nc, nc)->opaque;
VirtIONet *n = qemu_get_nic_opaque(nc);
struct iovec mhdr_sg[VIRTQUEUE_MAX_SIZE];
struct virtio_net_hdr_mrg_rxbuf mhdr;
unsigned mhdr_cnt = 0;
@ -736,7 +736,7 @@ static int32_t virtio_net_flush_tx(VirtIONet *n, VirtQueue *vq);
static void virtio_net_tx_complete(NetClientState *nc, ssize_t len)
{
VirtIONet *n = DO_UPCAST(NICState, nc, nc)->opaque;
VirtIONet *n = qemu_get_nic_opaque(nc);
virtqueue_push(n->tx_vq, &n->async_tx.elem, 0);
virtio_notify(&n->vdev, n->tx_vq);
@ -1035,7 +1035,7 @@ static int virtio_net_load(QEMUFile *f, void *opaque, int version_id)
static void virtio_net_cleanup(NetClientState *nc)
{
VirtIONet *n = DO_UPCAST(NICState, nc, nc)->opaque;
VirtIONet *n = qemu_get_nic_opaque(nc);
n->nic = NULL;
}