static int vnet_transmit(FAR struct vnet_driver_s *vnet)
{
int err;
/* Verify that the hardware is ready to send another packet. If we get
* here, then we are committed to sending a packet; Higher level logic
* must have assured that there is not transmission in progress.
*/
/* Send the packet: address=vnet->sk_dev.d_buf, length=vnet->sk_dev.d_len */
err = vnet_xmit(vnet->vnet, (char *)vnet->sk_dev.d_buf, vnet->sk_dev.d_len);
if (err)
{
/* When vnet_xmit fail, it means TX buffer is full. Watchdog
* is of no use here because no TX done INT will happen. So
* we reset the TX buffer directly.
*/
#ifdef CONFIG_DEBUG
cprintf("VNET: TX buffer is full\n");
#endif
return ERROR;
}
else
{
/* This step may be unnecessary here */
vnet_txdone(vnet);
}
return OK;
}
static int vnet_transmit(FAR struct vnet_driver_s *vnet)
{
int err;
/* Verify that the hardware is ready to send another packet. If we get
* here, then we are committed to sending a packet; Higher level logic
* must have assured that there is not transmission in progress.
*/
/* Increment statistics */
/* Send the packet: address=vnet->sk_dev.d_buf, length=vnet->sk_dev.d_len */
err = vnet_xmit(vnet->vnet, (char *)vnet->sk_dev.d_buf, vnet->sk_dev.d_len);
if (err) {
/* Setup the TX timeout watchdog (perhaps restarting the timer) */
//(void)wd_start(vnet->sk_txtimeout, VNET_TXTIMEOUT, vnet_txtimeout, 1, (uint32_t)vnet);
// When vnet_xmit fail, it means TX buffer is full. Watchdog
// is of no use here because no TX done INT will happen. So
// we reset the TX buffer directly.
#ifdef CONFIG_DEBUG
cprintf("VNET: TX buffer is full\n");
#endif
return ERROR;
}
else {
// this step may be unnecessary here
vnet_txdone(vnet);
}
return OK;
}
