/*
* Thread which will handle processing of TX desc
*/
static void *
pci_vtnet_tx_thread(void *param)
{
struct pci_vtnet_softc *sc = param;
struct vqueue_info *vq;
int have_work, error;
vq = &sc->vsc_queues[VTNET_TXQ];
/*
* Let us wait till the tx queue pointers get initialised &
* first tx signaled
*/
pthread_mutex_lock(&sc->tx_mtx);
error = pthread_cond_wait(&sc->tx_cond, &sc->tx_mtx);
assert(error == 0);
for (;;) {
/* note - tx mutex is locked here */
do {
if (sc->resetting)
have_work = 0;
else
have_work = vq_has_descs(vq);
if (!have_work) {
sc->tx_in_progress = 0;
error = pthread_cond_wait(&sc->tx_cond,
&sc->tx_mtx);
assert(error == 0);
}
} while (!have_work);
sc->tx_in_progress = 1;
pthread_mutex_unlock(&sc->tx_mtx);
vq_startchains(vq);
do {
/*
* Run through entries, placing them into
* iovecs and sending when an end-of-packet
* is found
*/
pci_vtnet_proctx(sc, vq);
} while (vq_has_descs(vq));
/*
* Generate an interrupt if needed.
*/
vq_endchains(vq, 1);
pthread_mutex_lock(&sc->tx_mtx);
}
}
/*
* Thread which will handle processing of TX desc
*/
static void *
pci_vtnet_tx_thread(void *param)
{
struct pci_vtnet_softc *sc = param;
struct vqueue_info *vq;
int error;
pthread_setname_np("net:tap:tx");
vq = &sc->vsc_queues[VTNET_TXQ];
/*
* Let us wait till the tx queue pointers get initialised &
* first tx signaled
*/
pthread_mutex_lock(&sc->tx_mtx);
error = pthread_cond_wait(&sc->tx_cond, &sc->tx_mtx);
assert(error == 0);
for (;;) {
/* note - tx mutex is locked here */
while (sc->resetting || !vq_has_descs(vq)) {
vq->vq_used->vu_flags &= ~VRING_USED_F_NO_NOTIFY;
mb();
if (!sc->resetting && vq_has_descs(vq))
break;
sc->tx_in_progress = 0;
error = pthread_cond_wait(&sc->tx_cond, &sc->tx_mtx);
assert(error == 0);
}
vq->vq_used->vu_flags |= VRING_USED_F_NO_NOTIFY;
sc->tx_in_progress = 1;
pthread_mutex_unlock(&sc->tx_mtx);
do {
/*
* Run through entries, placing them into
* iovecs and sending when an end-of-packet
* is found
*/
pci_vtnet_proctx(sc, vq);
} while (vq_has_descs(vq));
/*
* Generate an interrupt if needed.
*/
vq_endchains(vq, 1);
pthread_mutex_lock(&sc->tx_mtx);
}
}
