int
uether_rxbuf(struct usb_ether *ue, struct usb_page_cache *pc,
unsigned int offset, unsigned int len)
{
struct ifnet *ifp = ue->ue_ifp;
struct mbuf *m;
UE_LOCK_ASSERT(ue, MA_OWNED);
if (len < ETHER_HDR_LEN || len > MCLBYTES - ETHER_ALIGN)
return (1);
m = uether_newbuf();
if (m == NULL) {
ifp->if_ierrors++;
return (ENOMEM);
}
usbd_copy_out(pc, offset, mtod(m, uint8_t *), len);
/* finalize mbuf */
ifp->if_ipackets++;
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = m->m_len = len;
/* enqueue for later when the lock can be released */
_IF_ENQUEUE(&ue->ue_rxq, m);
return (0);
}
static void
ue_queue_command(struct usb_ether *ue,
usb_proc_callback_t *fn,
struct usb_proc_msg *t0, struct usb_proc_msg *t1)
{
struct usb_ether_cfg_task *task;
UE_LOCK_ASSERT(ue, MA_OWNED);
if (usb_proc_is_gone(&ue->ue_tq)) {
return; /* nothing to do */
}
/*
* NOTE: The task cannot get executed before we drop the
* "sc_mtx" mutex. It is safe to update fields in the message
* structure after that the message got queued.
*/
task = (struct usb_ether_cfg_task *)
usb_proc_msignal(&ue->ue_tq, t0, t1);
/* Setup callback and self pointers */
task->hdr.pm_callback = fn;
task->ue = ue;
/*
* Start and stop must be synchronous!
*/
if ((fn == ue_start_task) || (fn == ue_stop_task))
usb_proc_mwait(&ue->ue_tq, t0, t1);
}
static void
ue_stop_task(struct usb_proc_msg *_task)
{
struct usb_ether_cfg_task *task =
(struct usb_ether_cfg_task *)_task;
struct usb_ether *ue = task->ue;
UE_LOCK_ASSERT(ue, MA_OWNED);
usb_callout_stop(&ue->ue_watchdog);
ue->ue_methods->ue_stop(ue);
}
int
uether_rxmbuf(struct usb_ether *ue, struct mbuf *m,
unsigned int len)
{
struct ifnet *ifp = ue->ue_ifp;
UE_LOCK_ASSERT(ue, MA_OWNED);
/* finalize mbuf */
ifp->if_ipackets++;
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = m->m_len = len;
/* enqueue for later when the lock can be released */
_IF_ENQUEUE(&ue->ue_rxq, m);
return (0);
}
int
uether_rxmbuf(struct usb_ether *ue, struct mbuf *m,
unsigned int len)
{
struct ifnet *ifp = uether_getifp(ue);
UE_LOCK_ASSERT(ue);
/* finalize mbuf */
IFNET_STAT_INC(ifp, ipackets, 1);
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = m->m_len = len;
/* enqueue for later when the lock can be released */
IF_ENQUEUE(&ue->ue_rxq, m);
return (0);
}
static void
ue_start_task(struct usb_proc_msg *_task)
{
struct usb_ether_cfg_task *task =
(struct usb_ether_cfg_task *)_task;
struct usb_ether *ue = task->ue;
struct ifnet *ifp = ue->ue_ifp;
UE_LOCK_ASSERT(ue, MA_OWNED);
ue->ue_methods->ue_init(ue);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
return;
if (ue->ue_methods->ue_tick != NULL)
usb_callout_reset(&ue->ue_watchdog, hz, ue_watchdog, ue);
}
void
uether_rxflush(struct usb_ether *ue)
{
struct ifnet *ifp = ue->ue_ifp;
struct mbuf *m;
UE_LOCK_ASSERT(ue, MA_OWNED);
for (;;) {
_IF_DEQUEUE(&ue->ue_rxq, m);
if (m == NULL)
break;
/*
* The USB xfer has been resubmitted so its safe to unlock now.
*/
UE_UNLOCK(ue);
ifp->if_input(ifp, m);
UE_LOCK(ue);
}
}
