/* TODO: Use mini-os's blocking poll */
static void netfrontif_thread(void *argp)
{
struct netif *netif = argp;
struct netfrontif *nfi = netif->state;
struct netfront_dev *dev = nfi->dev;
#ifdef CONFIG_SELECT_POLL
int fd;
fd_set rfds;
struct timeval tv;
fd = netfrontif_fd(netif);
FD_ZERO(&rfds);
tv.tv_sec = CONFIG_LWIP_SELECT_TIMEOUT;
tv.tv_usec = 0;
#endif
while (likely(!nfi->_thread_exit)) {
#ifdef CONFIG_SELECT_POLL
FD_SET(fd, &rfds);
select(fd + 1, &rfds, NULL, NULL, &tv);
#else
schedule();
#endif
network_rx(dev);
}
nfi->_thread_exit = 0;
}
void netfront_handler(evtchn_port_t port, struct pt_regs *regs, void *data)
{
int flags;
struct netfront_dev *dev = data;
local_irq_save(flags);
network_tx_buf_gc(dev);
network_rx(dev);
local_irq_restore(flags);
}
ssize_t netfront_receive(struct netfront_dev *dev, unsigned char *data, size_t len)
{
unsigned long flags;
int fd = dev->fd;
ASSERT(current == main_thread);
dev->rlen = 0;
dev->data = data;
dev->len = len;
local_irq_save(flags);
network_rx(dev);
if (!dev->rlen && fd != -1)
/* No data for us, make select stop returning */
files[fd].read = 0;
/* Before re-enabling the interrupts, in case a packet just arrived in the
* meanwhile. */
local_irq_restore(flags);
dev->data = NULL;
dev->len = 0;
return dev->rlen;
}