/*
* Software interrupt routine, called at spl[soft]net.
*/
static void
pppintr(netmsg_t msg)
{
struct mbuf *m;
struct ppp_softc *sc;
int i;
/*
* Packets are never sent to this netisr so the message must always
* be replied. Interlock processing and notification by replying
* the message first.
*/
lwkt_replymsg(&msg->lmsg, 0);
get_mplock();
sc = ppp_softc;
for (i = 0; i < NPPP; ++i, ++sc) {
ifnet_serialize_all(&sc->sc_if);
if (!(sc->sc_flags & SC_TBUSY)
&& (!ifq_is_empty(&sc->sc_if.if_snd) || !IF_QEMPTY(&sc->sc_fastq))) {
sc->sc_flags |= SC_TBUSY;
(*sc->sc_start)(sc);
}
for (;;) {
IF_DEQUEUE(&sc->sc_rawq, m);
if (m == NULL)
break;
ppp_inproc(sc, m);
}
ifnet_deserialize_all(&sc->sc_if);
}
rel_mplock();
}
static rtems_task ppp_rxdaemon(rtems_task_argument arg)
{
rtems_event_set events;
rtems_interrupt_level level;
struct ppp_softc *sc = (struct ppp_softc *)arg;
struct mbuf *mp = (struct mbuf *)0;
struct mbuf *m;
/* enter processing loop */
while ( 1 ) {
/* wait for event */
rtems_event_receive(RX_PACKET|RX_MBUF|RX_EMPTY,RTEMS_WAIT|RTEMS_EVENT_ANY,RTEMS_NO_TIMEOUT,&events);
if ( events & RX_EMPTY ) {
printf("RX: QUEUE is EMPTY\n");
events &= ~RX_EMPTY;
}
if ( events ) {
/* get the network semaphore */
rtems_bsdnet_semaphore_obtain();
/* check to see if new packet was received */
if ( events & RX_PACKET ) {
/* get received packet mbuf chain */
rtems_interrupt_disable(level);
IF_DEQUEUE(&sc->sc_rawq, m);
rtems_interrupt_enable(level);
/* ensure packet was retrieved */
if ( m != (struct mbuf *)0 ) {
/* process the received packet */
mp = ppp_inproc(sc, m);
}
}
/* allocate a new mbuf to replace one */
if ( mp == NULL ) {
pppallocmbuf(sc, &mp);
}
/* place mbuf on freeq */
rtems_interrupt_disable(level);
IF_ENQUEUE(&sc->sc_freeq, mp);
rtems_interrupt_enable(level);
mp = (struct mbuf *)0;
/* release the network semaphore */
rtems_bsdnet_semaphore_release();
/* check to see if queue is empty */
if ( sc->sc_rawq.ifq_head ) {
/* queue is not empty - post another event */
rtems_event_send(sc->sc_rxtask, RX_PACKET);
}
}
}
}
