/*
* grab a reference to the device, and all pointers
* we need to operate on it.
*/
struct net_device *
ifunit_ref(const char* name)
{
int deviceIfIndex = -1;
struct net_device * ifp = NULL;
if (strlen(name) < 4 || _strnicmp(name, "eth", 3) != 0) {
D("not a NIC");
return NULL;
}
if (ndis_hooks.ndis_regif == NULL)
return NULL; /* function not available yet */
deviceIfIndex = getDeviceIfIndex(name+3);
if (deviceIfIndex < 0)
return NULL;
ifp = malloc(sizeof(struct net_device), M_DEVBUF, M_NOWAIT | M_ZERO);
if (ifp == NULL)
return NULL;
win32_init_lookaside_buffers(ifp);
RtlCopyMemory(ifp->if_xname, name, IFNAMSIZ);
ifp->ifIndex = deviceIfIndex;
win32_init_lookaside_buffers(ifp);
if (ndis_hooks.ndis_regif(ifp) != STATUS_SUCCESS) {
free(ifp, M_DEVBUF);
win32_clear_lookaside_buffers(ifp);
return NULL; /* not found */
}
return ifp;
}
void
if_rele(struct net_device *ifp)
{
if (ndis_hooks.ndis_rele != NULL)
{
ndis_hooks.ndis_rele(ifp);
}
}
/*
* XXX the mbuf must be consumed
* this is NM_SEND_UP which builds a batch of packets and then
* sends them up on the last call with a NULL data.
* XXX at the moment packets are copied from the netmap buffer into mbufs
* and then again into NDIS packets. We could save one allocation and one
* copy, eventually.
*/
void *
nm_os_send_up(struct ifnet *ifp, struct mbuf *m, struct mbuf *prev)
{
void *head = NULL;
if (ndis_hooks.injectPacket != NULL) {
//DbgPrint("send_up_to_stack!");
if (m != NULL) {
head = ndis_hooks.injectPacket(ifp->pfilter, m->pkt, m->m_len, FALSE, prev);
m_freem(m);
} else {
ndis_hooks.injectPacket(ifp->pfilter, NULL, 0, FALSE, prev);
}
} else { /* we should not get here */
if (m != NULL)
m_freem(m);
}
return head;
}
void
if_rele(struct net_device *ifp)
{
win32_clear_lookaside_buffers(ifp);
if (ndis_hooks.ndis_rele != NULL)
{
ndis_hooks.ndis_rele(ifp);
}
}
/*
* Transmit routine used by generic_netmap_txsync(). Returns 0 on success
* and <> 0 on error (which may be packet drops or other errors).
*/
int
nm_os_generic_xmit_frame(struct nm_os_gen_arg *a)
{
void *cur;
PVOID toSend = (a->addr == NULL) ? a->head : a->tail;
if (ndis_hooks.injectPacket == NULL) { /* silently drop ? */
return 0;
}
cur = ndis_hooks.injectPacket(a->ifp->pfilter, a->addr, a->len, TRUE, toSend);
if (cur) {
a->tail = cur;
if (a->head == NULL)
a->head = cur;
}
return 0;
}