/*
* 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);
}
/*
* 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_udbp_connect(hook_p hook)
{
/* probably not at splnet, force outward queueing */
NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
/* be really amiable and just say "YUP that's OK by me! " */
return (0);
}
static int
ng_ubt_connect(hook_p hook)
{
struct ubt_softc *sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
UBT_NG_LOCK(sc);
ubt_task_schedule(sc, UBT_FLAG_T_START_ALL);
UBT_NG_UNLOCK(sc);
return (0);
} /* ng_ubt_connect */
static int
ng_bt3c_connect(hook_p hook)
{
bt3c_softc_p sc = (bt3c_softc_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
if (hook != sc->hook) {
sc->hook = NULL;
return (EINVAL);
}
/* set the hook into queueing mode (for incoming (from wire) packets) */
NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
return (0);
} /* ng_bt3c_connect */
/*
* Give our OK for a hook to be added. The hook name is of the
* form "<family>/<type>/<proto>" where the three components may
* be decimal numbers or else aliases from the above lists.
*
* Connecting a hook amounts to opening the socket. Disconnecting
* the hook closes the socket and destroys the node as well.
*/
static int
ng_ksocket_newhook(node_p node, hook_p hook, const char *name0)
{
struct thread *td = curthread; /* XXX broken */
const priv_p priv = NG_NODE_PRIVATE(node);
char *s1, *s2, name[NG_HOOKSIZ];
int family, type, protocol, error;
/* Check if we're already connected */
if (priv->hook != NULL)
return (EISCONN);
if (priv->flags & KSF_CLONED) {
if (priv->flags & KSF_EMBRYONIC) {
/* Remove ourselves from our parent's embryo list */
LIST_REMOVE(priv, siblings);
priv->flags &= ~KSF_EMBRYONIC;
}
} else {
/* Extract family, type, and protocol from hook name */
snprintf(name, sizeof(name), "%s", name0);
s1 = name;
if ((s2 = index(s1, '/')) == NULL)
return (EINVAL);
*s2++ = '\0';
family = ng_ksocket_parse(ng_ksocket_families, s1, 0);
if (family == -1)
return (EINVAL);
s1 = s2;
if ((s2 = index(s1, '/')) == NULL)
return (EINVAL);
*s2++ = '\0';
type = ng_ksocket_parse(ng_ksocket_types, s1, 0);
if (type == -1)
return (EINVAL);
s1 = s2;
protocol = ng_ksocket_parse(ng_ksocket_protos, s1, family);
if (protocol == -1)
return (EINVAL);
/* Create the socket */
error = socreate(family, &priv->so, type, protocol,
td->td_ucred, td);
if (error != 0)
return (error);
/* XXX call soreserve() ? */
}
/* OK */
priv->hook = hook;
/*
* In case of misconfigured routing a packet may reenter
* ksocket node recursively. Decouple stack to avoid possible
* panics about sleeping with locks held.
*/
NG_HOOK_FORCE_QUEUE(hook);
return(0);
}
