/*
* 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);
}
/*
* 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
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;
}
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
*
* 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);
}
/*
* 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);
}
/*
* 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);
}
/*
* If only one hook, allow read(2) and write(2) to work.
*/
static int
ngs_connect(hook_p hook)
{
node_p node = NG_HOOK_NODE(hook);
struct ngsock *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);
}
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);
}
static void
ngd_send(netmsg_t msg)
{
struct socket *so = msg->send.base.nm_so;
struct mbuf *m = msg->send.nm_m;
struct sockaddr *addr = msg->send.nm_addr;
struct mbuf *control = msg->send.nm_control;
struct ngpcb *const pcbp = sotongpcb(so);
struct sockaddr_ng *const sap = (struct sockaddr_ng *) addr;
int len, error;
hook_p hook = NULL;
char hookname[NG_HOOKSIZ];
if ((pcbp == NULL) || (control != NULL)) {
error = EINVAL;
goto release;
}
if (pcbp->sockdata == NULL) {
error = ENOTCONN;
goto release;
}
if (sap == NULL)
len = 0; /* Make compiler happy. */
else
len = sap->sg_len - 2;
/*
* If the user used any of these ways to not specify an address
* then handle specially.
*/
if ((sap == NULL) || (len <= 0) || (*sap->sg_data == '\0')) {
if (NG_NODE_NUMHOOKS(pcbp->sockdata->node) != 1) {
error = EDESTADDRREQ;
goto release;
}
/*
* If exactly one hook exists, just use it.
* Special case to allow write(2) to work on an ng_socket.
*/
hook = LIST_FIRST(&pcbp->sockdata->node->nd_hooks);
} else {
if (len >= NG_HOOKSIZ) {
error = EINVAL;
goto release;
}
/*
* chop off the sockaddr header, and make sure it's NUL
* terminated
*/
bcopy(sap->sg_data, hookname, len);
hookname[len] = '\0';
/* Find the correct hook from 'hookname' */
hook = ng_findhook(pcbp->sockdata->node, hookname);
if (hook == NULL) {
error = EHOSTUNREACH;
goto release;
}
}
/* Send data. */
NG_SEND_DATA_FLAGS(error, hook, m, NG_WAITOK);
release:
if (control != NULL)
m_freem(control);
if (m != NULL)
m_freem(m);
lwkt_replymsg(&msg->send.base.lmsg, error);
}