int vboxNetAdpCreate(PINTNETTRUNKFACTORY pIfFactory, PVBOXNETADP *ppNew)
{
int rc;
unsigned i;
PVBOXNETADPGLOBALS pGlobals = (PVBOXNETADPGLOBALS)((uint8_t *)pIfFactory - RT_OFFSETOF(VBOXNETADPGLOBALS, TrunkFactory));
for (i = 0; i < RT_ELEMENTS(pGlobals->aAdapters); i++)
{
RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
PVBOXNETADP pThis = &pGlobals->aAdapters[i];
if (vboxNetAdpCheckAndSetState(pThis, kVBoxNetAdpState_Invalid, kVBoxNetAdpState_Transitional))
{
/* Found an empty slot -- use it. */
uint32_t cRefs = ASMAtomicIncU32(&pThis->cRefs);
Assert(cRefs == 1);
RTMAC Mac;
vboxNetAdpComposeMACAddress(pThis, &Mac);
rc = vboxNetAdpOsCreate(pThis, &Mac);
*ppNew = pThis;
RTSpinlockAcquireNoInts(pThis->hSpinlock, &Tmp);
vboxNetAdpSetState(pThis, kVBoxNetAdpState_Available);
RTSpinlockReleaseNoInts(pThis->hSpinlock, &Tmp);
return rc;
}
}
/* All slots in adapter array are busy. */
return VERR_OUT_OF_RESOURCES;
}
int vboxNetAdpCreate(PVBOXNETADP *ppNew, const char *pcszName)
{
int rc;
unsigned i;
for (i = 0; i < RT_ELEMENTS(g_aAdapters); i++)
{
PVBOXNETADP pThis = &g_aAdapters[i];
if (ASMAtomicCmpXchgU32((uint32_t volatile *)&pThis->enmState, kVBoxNetAdpState_Transitional, kVBoxNetAdpState_Invalid))
{
RTMAC Mac;
/* Found an empty slot -- use it. */
Log(("vboxNetAdpCreate: found empty slot: %d\n", i));
if (pcszName)
{
Log(("vboxNetAdpCreate: using name: %s\n", pcszName));
pThis->iUnit = vboxNetAdpGetUnitByName(pcszName);
strncpy(pThis->szName, pcszName, sizeof(pThis->szName));
pThis->szName[sizeof(pThis->szName) - 1] = '\0';
}
else
{
pThis->iUnit = vboxNetAdpGetNextAvailableUnit();
pThis->szName[0] = '\0';
}
if (pThis->iUnit < 0)
rc = VERR_INVALID_PARAMETER;
else
{
vboxNetAdpComposeMACAddress(pThis, &Mac);
rc = vboxNetAdpOsCreate(pThis, &Mac);
Log(("vboxNetAdpCreate: pThis=%p pThis->iUnit=%d, pThis->szName=%s\n",
pThis, pThis->iUnit, pThis->szName));
}
if (RT_SUCCESS(rc))
{
*ppNew = pThis;
ASMAtomicWriteU32((uint32_t volatile *)&pThis->enmState, kVBoxNetAdpState_Active);
Log2(("VBoxNetAdpCreate: Created %s\n", g_aAdapters[i].szName));
}
else
{
ASMAtomicWriteU32((uint32_t volatile *)&pThis->enmState, kVBoxNetAdpState_Invalid);
Log(("vboxNetAdpCreate: vboxNetAdpOsCreate failed with '%Rrc'.\n", rc));
}
for (i = 0; i < RT_ELEMENTS(g_aAdapters); i++)
Log2(("VBoxNetAdpCreate: Scanning entry: state=%d unit=%d name=%s\n",
g_aAdapters[i].enmState, g_aAdapters[i].iUnit, g_aAdapters[i].szName));
return rc;
}
}
Log(("vboxNetAdpCreate: no empty slots!\n"));
/* All slots in adapter array are busy. */
return VERR_OUT_OF_RESOURCES;
}
static void vboxNetAdpDarwinComposeUUID(PVBOXNETADP pThis, PRTUUID pUuid)
{
/* Generate UUID from name and MAC address. */
RTUuidClear(pUuid);
memcpy(pUuid->au8, "vboxnet", 7);
pUuid->Gen.u8ClockSeqHiAndReserved = (pUuid->Gen.u8ClockSeqHiAndReserved & 0x3f) | 0x80;
pUuid->Gen.u16TimeHiAndVersion = (pUuid->Gen.u16TimeHiAndVersion & 0x0fff) | 0x4000;
pUuid->Gen.u8ClockSeqLow = pThis->iUnit;
vboxNetAdpComposeMACAddress(pThis, (PRTMAC)pUuid->Gen.au8Node);
}