bool vboxNetFltOsMaybeRediscovered(PVBOXNETFLTINS pThis)
{
struct ifnet *ifp, *ifp0;
ifp = ASMAtomicUoReadPtrT(&pThis->u.s.ifp, struct ifnet *);
VBOXCURVNET_SET(ifp->if_vnet);
/*
* Attempt to check if the interface is still there and re-initialize if
* something has changed.
*/
ifp0 = ifunit(pThis->szName);
if (ifp != ifp0)
{
ASMAtomicUoWriteBool(&pThis->fDisconnectedFromHost, true);
ng_rmnode_self(pThis->u.s.node);
pThis->u.s.node = NULL;
}
if (ifp0 != NULL)
{
vboxNetFltOsDeleteInstance(pThis);
vboxNetFltOsInitInstance(pThis, NULL);
}
VBOXCURVNET_RESTORE();
return !ASMAtomicUoReadBool(&pThis->fDisconnectedFromHost);
}
/*
* Destroy node
*/
static int
ng_ksocket_shutdown(node_p node)
{
const priv_p priv = NG_NODE_PRIVATE(node);
priv_p embryo;
/* Close our socket (if any) */
if (priv->so != NULL) {
atomic_clear_int(&priv->so->so_rcv.ssb_flags, SSB_UPCALL);
atomic_clear_int(&priv->so->so_snd.ssb_flags, SSB_UPCALL);
priv->so->so_upcall = NULL;
soclose(priv->so, FNONBLOCK);
priv->so = NULL;
}
/* If we are an embryo, take ourselves out of the parent's list */
if (priv->flags & KSF_EMBRYONIC) {
LIST_REMOVE(priv, siblings);
priv->flags &= ~KSF_EMBRYONIC;
}
/* Remove any embryonic children we have */
while (!LIST_EMPTY(&priv->embryos)) {
embryo = LIST_FIRST(&priv->embryos);
ng_rmnode_self(embryo->node);
}
/* Take down netgraph node */
bzero(priv, sizeof(*priv));
kfree(priv, M_NETGRAPH);
NG_NODE_SET_PRIVATE(node, NULL);
NG_NODE_UNREF(node); /* let the node escape */
return (0);
}
static int
ng_sscop_disconnect(hook_p hook)
{
node_p node = NG_HOOK_NODE(hook);
struct priv *priv = NG_NODE_PRIVATE(node);
if(hook == priv->upper)
priv->upper = NULL;
else if(hook == priv->lower)
priv->lower = NULL;
else if(hook == priv->manage)
priv->manage = NULL;
if(NG_NODE_NUMHOOKS(node) == 0) {
if(NG_NODE_IS_VALID(node))
ng_rmnode_self(node);
} else {
/*
* Imply a release request, if the upper layer is
* disconnected.
*/
if(priv->upper == NULL && priv->lower != NULL &&
priv->enabled &&
sscop_getstate(priv->sscop) != SSCOP_IDLE) {
sscop_aasig(priv->sscop, SSCOP_RELEASE_request,
NULL, 0);
}
}
return 0;
}
int
ubt_detach(device_t dev)
{
struct ubt_softc *sc = device_get_softc(dev);
node_p node = sc->sc_node;
/* Destroy Netgraph node */
if (node != NULL) {
sc->sc_node = NULL;
NG_NODE_REALLY_DIE(node);
ng_rmnode_self(node);
}
/* Make sure ubt_task in gone */
taskqueue_drain(taskqueue_swi, &sc->sc_task);
/* Free USB transfers, if any */
usbd_transfer_unsetup(sc->sc_xfer, UBT_N_TRANSFER);
/* Destroy queues */
UBT_NG_LOCK(sc);
NG_BT_MBUFQ_DESTROY(&sc->sc_cmdq);
NG_BT_MBUFQ_DESTROY(&sc->sc_aclq);
NG_BT_MBUFQ_DESTROY(&sc->sc_scoq);
UBT_NG_UNLOCK(sc);
mtx_destroy(&sc->sc_if_mtx);
mtx_destroy(&sc->sc_ng_mtx);
return (0);
} /* ubt_detach */
/*
* Hook disconnection
*/
static int
ngipi_disconnect(hook_p hook)
{
if (NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
ng_rmnode_self(NG_HOOK_NODE(hook));
return (0);
}
static int
bt3c_pccard_detach(device_t dev)
{
bt3c_softc_p sc = (bt3c_softc_p) device_get_softc(dev);
if (sc == NULL)
return (0);
unregister_swi(sc->ith, SWI_TTY, -1);
sc->ith = NULL;
bus_teardown_intr(dev, sc->irq, sc->irq_cookie);
bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
sc->irq_cookie = NULL;
sc->irq = NULL;
sc->irq_rid = 0;
bus_release_resource(dev, SYS_RES_IOPORT, sc->iobase_rid, sc->iobase);
sc->iobase = NULL;
sc->iobase_rid = 0;
if (sc->node != NULL) {
NG_NODE_SET_PRIVATE(sc->node, NULL);
ng_rmnode_self(sc->node);
sc->node = NULL;
}
NG_FREE_M(sc->m);
IF_DRAIN(&sc->inq);
IF_DRAIN(&sc->outq);
return (0);
} /* bt3c_pccacd_detach */
static int
ng_sscfu_disconnect(hook_p hook)
{
node_p node = NG_HOOK_NODE(hook);
struct priv *priv = NG_NODE_PRIVATE(node);
if (hook == priv->upper)
priv->upper = NULL;
else if (hook == priv->lower)
priv->lower = NULL;
else {
log(LOG_ERR, "bogus hook");
return (EINVAL);
}
if (NG_NODE_NUMHOOKS(node) == 0) {
if (NG_NODE_IS_VALID(node))
ng_rmnode_self(node);
} else {
/*
* Because there are no timeouts reset the protocol
* if the lower layer is disconnected.
*/
if (priv->lower == NULL &&
priv->enabled &&
sscfu_getstate(priv->sscf) != SSCFU_RELEASED)
sscfu_reset(priv->sscf);
}
return (0);
}
/*
* Removal of the last link destroys the nodeo
*/
static int
ngee_disconnect(hook_p hook)
{
if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
&& (NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))) {
ng_rmnode_self(NG_HOOK_NODE(hook));
}
return (0);
}
/*
* Hook disconnection
*/
static int
ng_ksocket_disconnect(hook_p hook)
{
KASSERT(NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0,
("%s: numhooks=%d?", __func__,
NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook))));
if (NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))
ng_rmnode_self(NG_HOOK_NODE(hook));
return (0);
}
/*
* Dook disconnection
*
* For this type, removal of the last link destroys the node
*/
Static int
ng_udbp_disconnect(hook_p hook)
{
const udbp_p sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
sc->hook = NULL;
if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
&& (NG_NODE_IS_VALID(NG_HOOK_NODE(hook))))
ng_rmnode_self(NG_HOOK_NODE(hook));
return (0);
}
/*
* Hook disconnection
*/
static int
ngt_disconnect(hook_p hook)
{
struct hookinfo *const hinfo = NG_HOOK_PRIVATE(hook);
KASSERT(hinfo != NULL, ("%s: null info", __func__));
hinfo->hook = NULL;
if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
&& (NG_NODE_IS_VALID(NG_HOOK_NODE(hook))))
ng_rmnode_self(NG_HOOK_NODE(hook));
return (0);
}
void vboxNetFltOsDeleteInstance(PVBOXNETFLTINS pThis)
{
taskqueue_drain(taskqueue_fast, &pThis->u.s.tskin);
taskqueue_drain(taskqueue_fast, &pThis->u.s.tskout);
mtx_destroy(&pThis->u.s.inq.ifq_mtx);
mtx_destroy(&pThis->u.s.outq.ifq_mtx);
if (pThis->u.s.node != NULL)
ng_rmnode_self(pThis->u.s.node);
pThis->u.s.node = NULL;
}
/*
* Hook disconnection
*/
static int
ng_split_disconnect(hook_p hook)
{
hook_p *localhook = NG_HOOK_PRIVATE(hook);
KASSERT(localhook != NULL, ("%s: null info", __func__));
*localhook = NULL;
if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
&& (NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))) {
ng_rmnode_self(NG_HOOK_NODE(hook));
}
return (0);
}
/*
* This is called once we've already connected a new hook to the other node.
* It gives us a chance to balk at the last minute.
*/
static int
ng_xxx_connect(hook_p hook)
{
#if 0
/*
* If we were a driver running at other than splnet then
* we should set the QUEUE bit on the edge so that we
* will deliver by queing.
*/
if /*it is the upstream hook */
NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
#endif
#if 0
/*
* If for some reason we want incoming date to be queued
* by the NETISR system and delivered later we can set the same bit on
* OUR hook. (maybe to allow unwinding of the stack)
*/
if (NG_HOOK_PRIVATE(hook)) {
int dlci;
/*
* If it's dlci 1023, requeue it so that it's handled
* at a lower priority. This is how a node decides to
* defer a data message.
*/
dlci = ((struct XXX_hookinfo *) NG_HOOK_PRIVATE(hook))->dlci;
if (dlci == 1023) {
NG_HOOK_FORCE_QUEUE(hook);
}
#endif
/* otherwise be really amiable and just say "YUP that's OK by me! " */
return (0);
}
/*
* Hook disconnection
*
* For this type, removal of the last link destroys the node
*/
static int
ng_xxx_disconnect(hook_p hook)
{
if (NG_HOOK_PRIVATE(hook))
((struct XXX_hookinfo *) (NG_HOOK_PRIVATE(hook)))->hook = NULL;
if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
&& (NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))) /* already shutting down? */
ng_rmnode_self(NG_HOOK_NODE(hook));
return (0);
}
/*
* Hook disconnection
* For this type, removal of any link except "debug" destroys the node.
*/
static int
nglmi_disconnect(hook_p hook)
{
const sc_p sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
/* OK to remove debug hook(s) */
if (NG_HOOK_PRIVATE(hook) == NULL)
return (0);
/* Stop timer if it's currently active */
if (sc->flags & SCF_CONNECTED)
ng_uncallout(&sc->handle, sc->node);
/* Self-destruct */
if (NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))
ng_rmnode_self(NG_HOOK_NODE(hook));
return (0);
}
/*
* Hook disconnection
*
* For this type, removal of the last link destroys the node
* if the NOLINGER flag is set.
*/
static int
ngs_disconnect(hook_p hook)
{
node_p node = NG_HOOK_NODE(hook);
struct ngsock *const priv = NG_NODE_PRIVATE(node);
if ((priv->datasock) && (priv->datasock->ng_socket)) {
if (NG_NODE_NUMHOOKS(node) == 1)
sosetstate(priv->datasock->ng_socket, SS_ISCONNECTED);
else
soclrstate(priv->datasock->ng_socket, SS_ISCONNECTED);
}
if ((priv->flags & NGS_FLAG_NOLINGER) &&
(NG_NODE_NUMHOOKS(node) == 0) && (NG_NODE_IS_VALID(node)))
ng_rmnode_self(node);
return (0);
}
/*
* Hook disconnection
*
* Invalidate the private data associated with this dlci.
* For this type, removal of the last link resets tries to destroy the node.
*/
static int
ngfrm_disconnect(hook_p hook)
{
const sc_p sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
struct ctxinfo *const cp = NG_HOOK_PRIVATE(hook);
int dlci;
/* If it's a regular dlci hook, then free resources etc.. */
if (cp != NULL) {
cp->hook = NULL;
dlci = cp->dlci;
if (dlci != -1)
sc->ALT[dlci] = 0;
cp->flags = 0;
sc->datahooks--;
}
if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
&& (NG_NODE_IS_VALID(NG_HOOK_NODE(hook))))
ng_rmnode_self(NG_HOOK_NODE(hook));
return (0);
}
/*
* Remove a reference from node private data.
*/
static void
ng_socket_free_priv(struct ngsock *priv)
{
mtx_assert(&priv->mtx, MA_OWNED);
priv->refs--;
if (priv->refs == 0) {
mtx_destroy(&priv->mtx);
kfree(priv, M_NETGRAPH_SOCK);
return;
}
if ((priv->refs == 1) && (priv->node != NULL)) {
node_p node = priv->node;
priv->node = NULL;
mtx_unlock(&priv->mtx);
NG_NODE_UNREF(node);
ng_rmnode_self(node);
} else
mtx_unlock(&priv->mtx);
}
/*
* Remove a reference from node private data.
*/
static void
ng_socket_free_priv(struct ngsock *priv)
{
KKASSERT(mtx_owned(&priv->mtx));
priv->refs--;
if (priv->refs == 0) {
mtx_uninit(&priv->mtx);
kfree(priv, M_NETGRAPH_SOCK);
return;
}
if ((priv->refs == 1) && (priv->node != NULL)) {
node_p node = priv->node;
priv->node = NULL;
mtx_unlock(&priv->mtx);
NG_NODE_UNREF(node);
ng_rmnode_self(node);
} else
mtx_unlock(&priv->mtx);
}
/*
* Destroy node
*/
static int
ng_ksocket_shutdown(node_p node)
{
const priv_p priv = NG_NODE_PRIVATE(node);
priv_p embryo;
/* Close our socket (if any) */
if (priv->so != NULL) {
SOCKBUF_LOCK(&priv->so->so_rcv);
soupcall_clear(priv->so, SO_RCV);
SOCKBUF_UNLOCK(&priv->so->so_rcv);
SOCKBUF_LOCK(&priv->so->so_snd);
soupcall_clear(priv->so, SO_SND);
SOCKBUF_UNLOCK(&priv->so->so_snd);
soclose(priv->so);
priv->so = NULL;
}
/* If we are an embryo, take ourselves out of the parent's list */
if (priv->flags & KSF_EMBRYONIC) {
LIST_REMOVE(priv, siblings);
priv->flags &= ~KSF_EMBRYONIC;
}
/* Remove any embryonic children we have */
while (!LIST_EMPTY(&priv->embryos)) {
embryo = LIST_FIRST(&priv->embryos);
ng_rmnode_self(embryo->node);
}
/* Take down netgraph node */
bzero(priv, sizeof(*priv));
free(priv, M_NETGRAPH_KSOCKET);
NG_NODE_SET_PRIVATE(node, NULL);
NG_NODE_UNREF(node); /* let the node escape */
return (0);
}
