static void e1000_polltimer(int argc, uint32_t arg, ...)
{
struct e1000_dev *e1000 = (struct e1000_dev *)arg;
int tail = e1000->tx_ring.tail;
/* Check if there is room in the send another TX packet. We cannot perform
* the TX poll if he are unable to accept another packet for transmission.
*/
if (!e1000->tx_ring.desc[tail].desc_status)
{
return;
}
/* If so, update TCP timing states and poll uIP for new XMIT data. Hmmm..
* might be bug here. Does this mean if there is a transmit in progress,
* we will missing TCP time state updates?
*/
(void)uip_timer(&e1000->uip_dev, e1000_uiptxpoll, E1000_POLLHSEC);
/* Setup the watchdog poll timer again */
(void)wd_start(e1000->txpoll, E1000_WDDELAY, e1000_polltimer, 1, arg);
}
static void vnet_polltimer(int argc, uint32_t arg, ...)
{
FAR struct vnet_driver_s *vnet = (FAR struct vnet_driver_s *)arg;
/* Check if there is room in the send another TX packet. We cannot perform
* the TX poll if he are unable to accept another packet for transmission.
*/
if (vnet_is_txbuff_full(vnet->vnet)) {
#ifdef CONFIG_DEBUG
cprintf("VNET: TX buffer is full\n");
#endif
return;
}
/* If so, update TCP timing states and poll uIP for new XMIT data. Hmmm..
* might be bug here. Does this mean if there is a transmit in progress,
* we will missing TCP time state updates?
*/
(void)uip_timer(&vnet->sk_dev, vnet_uiptxpoll, VNET_POLLHSEC);
/* Setup the watchdog poll timer again */
(void)wd_start(vnet->sk_txpoll, VNET_WDDELAY, vnet_polltimer, 1, arg);
}
static void slip_txtask(int argc, char *argv[])
{
FAR struct slip_driver_s *priv;
unsigned int index = *(argv[1]) - '0';
uip_lock_t flags;
ndbg("index: %d\n", index);
DEBUGASSERT(index < CONFIG_SLIP_NINTERFACES);
/* Get our private data structure instance and wake up the waiting
* initialization logic.
*/
priv = &g_slip[index];
slip_semgive(priv);
/* Loop forever */
for (;;)
{
/* Wait for the timeout to expire (or until we are signaled by by */
usleep(SLIP_WDDELAY);
/* Is the interface up? */
if (priv->bifup)
{
/* Get exclusive access to uIP (if it it is already being used
* slip_rxtask, then we have to wait).
*/
slip_semtake(priv);
/* Poll uIP for new XMIT data. BUG: We really need to calculate
* the number of hsecs! When we are awakened by slip_txavail, the
* number will be smaller; when we have to wait for the semaphore
* (above), it may be larger.
*/
flags = uip_lock();
priv->dev.d_buf = priv->txbuf;
(void)uip_timer(&priv->dev, slip_uiptxpoll, SLIP_POLLHSEC);
uip_unlock(flags);
slip_semgive(priv);
}
}
}
static void skel_polltimer(int argc, uint32_t arg, ...)
{
FAR struct skel_driver_s *skel = (FAR struct skel_driver_s *)arg;
/* Check if there is room in the send another TX packet. We cannot perform
* the TX poll if he are unable to accept another packet for transmission.
*/
/* If so, update TCP timing states and poll uIP for new XMIT data. Hmmm..
* might be bug here. Does this mean if there is a transmit in progress,
* we will missing TCP time state updates?
*/
(void)uip_timer(&skel->sk_dev, skel_uiptxpoll, skeleton_POLLHSEC);
/* Setup the watchdog poll timer again */
(void)wd_start(skel->sk_txpoll, skeleton_WDDELAY, skel_polltimer, 1, arg);
}
void uipdriver_loop(void)
{
/* netdev_read will return 0 on a timeout event and >0 on a data received event */
g_sim_dev.d_len = netdev_read((unsigned char*)g_sim_dev.d_buf, CONFIG_NET_BUFSIZE);
/* Disable preemption through to the following so that it behaves a little more
* like an interrupt (otherwise, the following logic gets pre-empted an behaves
* oddly.
*/
sched_lock();
if (g_sim_dev.d_len > 0)
{
/* Data received event. Check for valid Ethernet header with destination == our
* MAC address
*/
if (g_sim_dev.d_len > UIP_LLH_LEN && up_comparemac(BUF->ether_dhost, &g_sim_dev.d_mac) == 0)
{
/* We only accept IP packets of the configured type and ARP packets */
#ifdef CONFIG_NET_IPv6
if (BUF->ether_type == htons(UIP_ETHTYPE_IP6))
#else
if (BUF->ether_type == htons(UIP_ETHTYPE_IP))
#endif
{
uip_arp_ipin(&g_sim_dev);
uip_input(&g_sim_dev);
/* If the above function invocation resulted in data that
* should be sent out on the network, the global variable
* d_len is set to a value > 0.
*/
if (g_sim_dev.d_len > 0)
{
uip_arp_out(&g_sim_dev);
netdev_send(g_sim_dev.d_buf, g_sim_dev.d_len);
}
}
else if (BUF->ether_type == htons(UIP_ETHTYPE_ARP))
{
uip_arp_arpin(&g_sim_dev);
/* If the above function invocation resulted in data that
* should be sent out on the network, the global variable
* d_len is set to a value > 0.
*/
if (g_sim_dev.d_len > 0)
{
netdev_send(g_sim_dev.d_buf, g_sim_dev.d_len);
}
}
}
}
/* Otherwise, it must be a timeout event */
else if (timer_expired(&g_periodic_timer))
{
timer_reset(&g_periodic_timer);
uip_timer(&g_sim_dev, sim_uiptxpoll, 1);
}
sched_unlock();
}
