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move virtnet_send_command() above virtnet_set_mac_address() 

We want to send vq command to set mac address in
virtnet_set_mac_address(), so do this function moving.
Fixed a little issue of coding style.

Signed-off-by: Amos Kong <akong@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amos Kong 2013-01-21 01:17:21 +00:00 committed by David S. Miller
parent 3fcd550a4b
commit 40cbfc3707
1 changed files with 44 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

89
drivers/net/virtio_net.c
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@ -753,6 +753,50 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
/*
* Send command via the control virtqueue and check status. Commands
* supported by the hypervisor, as indicated by feature bits, should
* never fail unless improperly formated.
*/
static bool virtnet_send_command(struct virtnet_info *vi, u8 class, u8 cmd,
struct scatterlist *data, int out, int in)
{
struct scatterlist *s, sg[VIRTNET_SEND_COMMAND_SG_MAX + 2];
struct virtio_net_ctrl_hdr ctrl;
virtio_net_ctrl_ack status = ~0;
unsigned int tmp;
int i;
/* Caller should know better */
BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ) ||
(out + in > VIRTNET_SEND_COMMAND_SG_MAX));
out++; /* Add header */
in++; /* Add return status */
ctrl.class = class;
ctrl.cmd = cmd;
sg_init_table(sg, out + in);
sg_set_buf(&sg[0], &ctrl, sizeof(ctrl));
for_each_sg(data, s, out + in - 2, i)
sg_set_buf(&sg[i + 1], sg_virt(s), s->length);
sg_set_buf(&sg[out + in - 1], &status, sizeof(status));
BUG_ON(virtqueue_add_buf(vi->cvq, sg, out, in, vi, GFP_ATOMIC) < 0);
virtqueue_kick(vi->cvq);
/* Spin for a response, the kick causes an ioport write, trapping
* into the hypervisor, so the request should be handled immediately.
*/
while (!virtqueue_get_buf(vi->cvq, &tmp))
cpu_relax();
return status == VIRTIO_NET_OK;
}
static int virtnet_set_mac_address(struct net_device *dev, void *p)
{
struct virtnet_info *vi = netdev_priv(dev);
@ -819,51 +863,6 @@ static void virtnet_netpoll(struct net_device *dev)
}
#endif
/*
* Send command via the control virtqueue and check status. Commands
* supported by the hypervisor, as indicated by feature bits, should
* never fail unless improperly formated.
*/
static bool virtnet_send_command(struct virtnet_info *vi, u8 class, u8 cmd,
struct scatterlist *data, int out, int in)
{
struct scatterlist *s, sg[VIRTNET_SEND_COMMAND_SG_MAX + 2];
struct virtio_net_ctrl_hdr ctrl;
virtio_net_ctrl_ack status = ~0;
unsigned int tmp;
int i;
/* Caller should know better */
BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ) ||
(out + in > VIRTNET_SEND_COMMAND_SG_MAX));
out++; /* Add header */
in++; /* Add return status */
ctrl.class = class;
ctrl.cmd = cmd;
sg_init_table(sg, out + in);
sg_set_buf(&sg[0], &ctrl, sizeof(ctrl));
for_each_sg(data, s, out + in - 2, i)
sg_set_buf(&sg[i + 1], sg_virt(s), s->length);
sg_set_buf(&sg[out + in - 1], &status, sizeof(status));
BUG_ON(virtqueue_add_buf(vi->cvq, sg, out, in, vi, GFP_ATOMIC) < 0);
virtqueue_kick(vi->cvq);
/*
* Spin for a response, the kick causes an ioport write, trapping
* into the hypervisor, so the request should be handled immediately.
*/
while (!virtqueue_get_buf(vi->cvq, &tmp))
cpu_relax();
return status == VIRTIO_NET_OK;
}
static void virtnet_ack_link_announce(struct virtnet_info *vi)
{
rtnl_lock();