1999-10-21 09:06:11 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* ng_sample.c
|
|
|
|
*
|
|
|
|
* Copyright (c) 1996-1999 Whistle Communications, Inc.
|
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* Subject to the following obligations and disclaimer of warranty, use and
|
|
|
|
* redistribution of this software, in source or object code forms, with or
|
|
|
|
* without modifications are expressly permitted by Whistle Communications;
|
|
|
|
* provided, however, that:
|
|
|
|
* 1. Any and all reproductions of the source or object code must include the
|
|
|
|
* copyright notice above and the following disclaimer of warranties; and
|
|
|
|
* 2. No rights are granted, in any manner or form, to use Whistle
|
|
|
|
* Communications, Inc. trademarks, including the mark "WHISTLE
|
|
|
|
* COMMUNICATIONS" on advertising, endorsements, or otherwise except as
|
|
|
|
* such appears in the above copyright notice or in the software.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
|
|
|
|
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
|
|
|
|
* REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
|
|
|
|
* INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
|
|
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
|
|
|
|
* WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
|
|
|
|
* REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
|
|
|
|
* SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
|
|
|
|
* IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
|
|
|
|
* RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
|
|
|
|
* WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
|
|
|
|
* PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
|
|
* SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
|
|
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
|
|
* THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
|
|
|
|
* OF SUCH DAMAGE.
|
|
|
|
*
|
2000-10-24 17:32:45 +00:00
|
|
|
* Author: Julian Elischer <julian@freebsd.org>
|
1999-10-21 09:06:11 +00:00
|
|
|
*
|
|
|
|
* $FreeBSD$
|
1999-11-01 10:00:40 +00:00
|
|
|
* $Whistle: ng_sample.c,v 1.13 1999/11/01 09:24:52 julian Exp $
|
1999-10-21 09:06:11 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include <sys/param.h>
|
|
|
|
#include <sys/systm.h>
|
|
|
|
#include <sys/kernel.h>
|
|
|
|
#include <sys/mbuf.h>
|
|
|
|
#include <sys/malloc.h>
|
1999-12-01 19:40:37 +00:00
|
|
|
#include <sys/ctype.h>
|
1999-10-21 09:06:11 +00:00
|
|
|
#include <sys/errno.h>
|
|
|
|
#include <sys/syslog.h>
|
|
|
|
|
|
|
|
#include <netgraph/ng_message.h>
|
1999-12-01 19:40:37 +00:00
|
|
|
#include <netgraph/ng_parse.h>
|
1999-10-21 09:06:11 +00:00
|
|
|
#include <netgraph/ng_sample.h>
|
|
|
|
#include <netgraph/netgraph.h>
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This section contains the netgraph method declarations for the
|
|
|
|
* sample node. These methods define the netgraph 'type'.
|
|
|
|
*/
|
|
|
|
|
1999-11-01 10:00:40 +00:00
|
|
|
static ng_constructor_t ng_xxx_constructor;
|
|
|
|
static ng_rcvmsg_t ng_xxx_rcvmsg;
|
|
|
|
static ng_shutdown_t ng_xxx_rmnode;
|
|
|
|
static ng_newhook_t ng_xxx_newhook;
|
|
|
|
static ng_connect_t ng_xxx_connect;
|
|
|
|
static ng_rcvdata_t ng_xxx_rcvdata; /* note these are both ng_rcvdata_t */
|
|
|
|
static ng_disconnect_t ng_xxx_disconnect;
|
1999-10-21 09:06:11 +00:00
|
|
|
|
1999-12-01 19:40:37 +00:00
|
|
|
/* Parse type for struct ngxxxstat */
|
|
|
|
static const struct ng_parse_struct_info
|
|
|
|
ng_xxx_stat_type_info = NG_XXX_STATS_TYPE_INFO;
|
|
|
|
static const struct ng_parse_type ng_xxx_stat_type = {
|
|
|
|
&ng_parse_struct_type,
|
|
|
|
&ng_xxx_stat_type_info
|
|
|
|
};
|
|
|
|
|
|
|
|
/* List of commands and how to convert arguments to/from ASCII */
|
|
|
|
static const struct ng_cmdlist ng_xxx_cmdlist[] = {
|
|
|
|
{
|
|
|
|
NGM_XXX_COOKIE,
|
|
|
|
NGM_XXX_GET_STATUS,
|
|
|
|
"getstatus",
|
|
|
|
NULL,
|
|
|
|
&ng_xxx_stat_type,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
NGM_XXX_COOKIE,
|
|
|
|
NGM_XXX_SET_FLAG,
|
|
|
|
"setflag",
|
|
|
|
&ng_parse_int32_type,
|
|
|
|
NULL
|
|
|
|
},
|
|
|
|
{ 0 }
|
|
|
|
};
|
|
|
|
|
1999-10-21 09:06:11 +00:00
|
|
|
/* Netgraph node type descriptor */
|
|
|
|
static struct ng_type typestruct = {
|
|
|
|
NG_VERSION,
|
|
|
|
NG_XXX_NODE_TYPE,
|
|
|
|
NULL,
|
|
|
|
ng_xxx_constructor,
|
|
|
|
ng_xxx_rcvmsg,
|
|
|
|
ng_xxx_rmnode,
|
|
|
|
ng_xxx_newhook,
|
|
|
|
NULL,
|
|
|
|
ng_xxx_connect,
|
|
|
|
ng_xxx_rcvdata,
|
1999-11-30 02:45:32 +00:00
|
|
|
ng_xxx_disconnect,
|
1999-12-01 19:40:37 +00:00
|
|
|
ng_xxx_cmdlist
|
1999-10-21 09:06:11 +00:00
|
|
|
};
|
|
|
|
NETGRAPH_INIT(xxx, &typestruct);
|
|
|
|
|
|
|
|
/* Information we store for each hook on each node */
|
|
|
|
struct XXX_hookinfo {
|
|
|
|
int dlci; /* The DLCI it represents, -1 == downstream */
|
|
|
|
int channel; /* The channel representing this DLCI */
|
|
|
|
hook_p hook;
|
|
|
|
};
|
|
|
|
|
|
|
|
/* Information we store for each node */
|
|
|
|
struct XXX {
|
|
|
|
struct XXX_hookinfo channel[XXX_NUM_DLCIS];
|
|
|
|
struct XXX_hookinfo downstream_hook;
|
|
|
|
node_p node; /* back pointer to node */
|
|
|
|
hook_p debughook;
|
|
|
|
u_int packets_in; /* packets in from downstream */
|
|
|
|
u_int packets_out; /* packets out towards downstream */
|
|
|
|
u_int32_t flags;
|
|
|
|
};
|
|
|
|
typedef struct XXX *xxx_p;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate the private data structure and the generic node
|
|
|
|
* and link them together.
|
|
|
|
*
|
|
|
|
* ng_make_node_common() returns with a generic node struct
|
|
|
|
* with a single reference for us.. we transfer it to the
|
|
|
|
* private structure.. when we free the private struct we must
|
|
|
|
* unref the node so it gets freed too.
|
|
|
|
*
|
|
|
|
* If this were a device node than this work would be done in the attach()
|
|
|
|
* routine and the constructor would return EINVAL as you should not be able
|
|
|
|
* to creatednodes that depend on hardware (unless you can add the hardware :)
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
ng_xxx_constructor(node_p *nodep)
|
|
|
|
{
|
|
|
|
xxx_p privdata;
|
|
|
|
int i, error;
|
|
|
|
|
|
|
|
/* Initialize private descriptor */
|
2000-11-18 15:17:43 +00:00
|
|
|
MALLOC(privdata, xxx_p, sizeof(*privdata), M_NETGRAPH,
|
|
|
|
M_NOWAIT | M_ZERO);
|
1999-10-21 09:06:11 +00:00
|
|
|
if (privdata == NULL)
|
|
|
|
return (ENOMEM);
|
|
|
|
for (i = 0; i < XXX_NUM_DLCIS; i++) {
|
|
|
|
privdata->channel[i].dlci = -2;
|
|
|
|
privdata->channel[i].channel = i;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Call the 'generic' (ie, superclass) node constructor */
|
|
|
|
if ((error = ng_make_node_common(&typestruct, nodep))) {
|
|
|
|
FREE(privdata, M_NETGRAPH);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Link structs together; this counts as our one reference to *nodep */
|
|
|
|
(*nodep)->private = privdata;
|
|
|
|
privdata->node = *nodep;
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Give our ok for a hook to be added...
|
|
|
|
* If we are not running this might kick a device into life.
|
|
|
|
* Possibly decode information out of the hook name.
|
|
|
|
* Add the hook's private info to the hook structure.
|
|
|
|
* (if we had some). In this example, we assume that there is a
|
|
|
|
* an array of structs, called 'channel' in the private info,
|
|
|
|
* one for each active channel. The private
|
|
|
|
* pointer of each hook points to the appropriate XXX_hookinfo struct
|
|
|
|
* so that the source of an input packet is easily identified.
|
|
|
|
* (a dlci is a frame relay channel)
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
ng_xxx_newhook(node_p node, hook_p hook, const char *name)
|
|
|
|
{
|
|
|
|
const xxx_p xxxp = node->private;
|
|
|
|
const char *cp;
|
|
|
|
int dlci = 0;
|
|
|
|
int chan;
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
/* Possibly start up the device if it's not already going */
|
|
|
|
if ((xxxp->flags & SCF_RUNNING) == 0) {
|
|
|
|
ng_xxx_start_hardware(xxxp);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Example of how one might use hooks with embedded numbers: All
|
|
|
|
* hooks start with 'dlci' and have a decimal trailing channel
|
|
|
|
* number up to 4 digits Use the leadin defined int he associated .h
|
|
|
|
* file. */
|
1999-11-02 23:18:01 +00:00
|
|
|
if (strncmp(name,
|
|
|
|
NG_XXX_HOOK_DLCI_LEADIN, strlen(NG_XXX_HOOK_DLCI_LEADIN)) == 0) {
|
1999-11-24 01:03:08 +00:00
|
|
|
char *eptr;
|
1999-11-02 23:18:01 +00:00
|
|
|
|
1999-10-21 09:06:11 +00:00
|
|
|
cp = name + sizeof(NG_XXX_HOOK_DLCI_LEADIN);
|
1999-11-02 23:18:01 +00:00
|
|
|
if (!isdigit(*cp) || (cp[0] == '0' && cp[1] != '\0'))
|
1999-10-21 09:06:11 +00:00
|
|
|
return (EINVAL);
|
1999-11-02 23:18:01 +00:00
|
|
|
dlci = (int)strtoul(cp, &eptr, 10);
|
|
|
|
if (*eptr != '\0' || dlci < 0 || dlci > 1023)
|
|
|
|
return (EINVAL);
|
|
|
|
|
1999-10-21 09:06:11 +00:00
|
|
|
/* We have a dlci, now either find it, or allocate it */
|
|
|
|
for (chan = 0; chan < XXX_NUM_DLCIS; chan++)
|
|
|
|
if (xxxp->channel[chan].dlci == dlci)
|
|
|
|
break;
|
|
|
|
if (chan == XXX_NUM_DLCIS) {
|
|
|
|
for (chan = 0; chan < XXX_NUM_DLCIS; chan++)
|
|
|
|
if (xxxp->channel[chan].dlci != -2)
|
|
|
|
continue;
|
|
|
|
if (chan == XXX_NUM_DLCIS)
|
|
|
|
return (ENOBUFS);
|
|
|
|
}
|
|
|
|
if (xxxp->channel[chan].hook != NULL)
|
|
|
|
return (EADDRINUSE);
|
|
|
|
hook->private = xxxp->channel + chan;
|
|
|
|
xxxp->channel[chan].hook = hook;
|
|
|
|
return (0);
|
|
|
|
} else if (strcmp(name, NG_XXX_HOOK_DOWNSTREAM) == 0) {
|
|
|
|
/* Example of simple predefined hooks. */
|
|
|
|
/* do something specific to the downstream connection */
|
|
|
|
xxxp->downstream_hook.hook = hook;
|
|
|
|
hook->private = &xxxp->downstream_hook;
|
|
|
|
} else if (strcmp(name, NG_XXX_HOOK_DEBUG) == 0) {
|
|
|
|
/* do something specific to a debug connection */
|
|
|
|
xxxp->debughook = hook;
|
|
|
|
hook->private = NULL;
|
|
|
|
} else
|
|
|
|
return (EINVAL); /* not a hook we know about */
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Get a netgraph control message.
|
|
|
|
* Check it is one we understand. If needed, send a response.
|
|
|
|
* We could save the address for an async action later, but don't here.
|
|
|
|
* Always free the message.
|
|
|
|
* The response should be in a malloc'd region that the caller can 'free'.
|
|
|
|
* A response is not required.
|
|
|
|
* Theoretically you could respond defferently to old message types if
|
|
|
|
* the cookie in the header didn't match what we consider to be current
|
|
|
|
* (so that old userland programs could continue to work).
|
|
|
|
*/
|
|
|
|
static int
|
2000-04-28 17:09:00 +00:00
|
|
|
ng_xxx_rcvmsg(node_p node, struct ng_mesg *msg, const char *retaddr,
|
|
|
|
struct ng_mesg **rptr, hook_p lasthook)
|
1999-10-21 09:06:11 +00:00
|
|
|
{
|
|
|
|
const xxx_p xxxp = node->private;
|
|
|
|
struct ng_mesg *resp = NULL;
|
|
|
|
int error = 0;
|
|
|
|
|
|
|
|
/* Deal with message according to cookie and command */
|
|
|
|
switch (msg->header.typecookie) {
|
|
|
|
case NGM_XXX_COOKIE:
|
|
|
|
switch (msg->header.cmd) {
|
|
|
|
case NGM_XXX_GET_STATUS:
|
|
|
|
{
|
|
|
|
struct ngxxxstat *stats;
|
|
|
|
|
|
|
|
NG_MKRESPONSE(resp, msg, sizeof(*stats), M_NOWAIT);
|
|
|
|
if (!resp) {
|
|
|
|
error = ENOMEM;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
stats = (struct ngxxxstat *) resp->data;
|
|
|
|
stats->packets_in = xxxp->packets_in;
|
|
|
|
stats->packets_out = xxxp->packets_out;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case NGM_XXX_SET_FLAG:
|
|
|
|
if (msg->header.arglen != sizeof(u_int32_t)) {
|
|
|
|
error = EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
xxxp->flags = *((u_int32_t *) msg->data);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
error = EINVAL; /* unknown command */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
error = EINVAL; /* unknown cookie type */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Take care of synchronous response, if any */
|
|
|
|
if (rptr)
|
|
|
|
*rptr = resp;
|
|
|
|
else if (resp)
|
|
|
|
FREE(resp, M_NETGRAPH);
|
|
|
|
|
|
|
|
/* Free the message and return */
|
|
|
|
FREE(msg, M_NETGRAPH);
|
|
|
|
return(error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Receive data, and do something with it.
|
|
|
|
* Possibly send it out on another link after processing.
|
|
|
|
* Possibly do something different if it comes from different
|
|
|
|
* hooks. the caller will never free m or meta, so
|
|
|
|
* if we use up this data or abort we must free BOTH of these.
|
|
|
|
*
|
|
|
|
* If we want, we may decide to force this data to be queued and reprocessed
|
2000-12-12 18:52:14 +00:00
|
|
|
* at the netgraph NETISR time.
|
|
|
|
* We would do that by setting the HK_QUEUE flag on our hook. We would do that
|
|
|
|
* in the connect() method.
|
1999-10-21 09:06:11 +00:00
|
|
|
*/
|
|
|
|
static int
|
2000-04-28 17:09:00 +00:00
|
|
|
ng_xxx_rcvdata(hook_p hook, struct mbuf *m, meta_p meta,
|
2000-12-12 18:52:14 +00:00
|
|
|
struct mbuf **ret_m, meta_p *ret_meta, struct ng_mesg **resp)
|
1999-10-21 09:06:11 +00:00
|
|
|
{
|
|
|
|
const xxx_p xxxp = hook->node->private;
|
|
|
|
int chan = -2;
|
|
|
|
int dlci = -2;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
if (hook->private) {
|
|
|
|
dlci = ((struct XXX_hookinfo *) hook->private)->dlci;
|
|
|
|
chan = ((struct XXX_hookinfo *) hook->private)->channel;
|
|
|
|
if (dlci != -1) {
|
|
|
|
/* If received on a DLCI hook process for this
|
|
|
|
* channel and pass it to the downstream module.
|
|
|
|
* Normally one would add a multiplexing header at
|
|
|
|
* the front here */
|
|
|
|
/* M_PREPEND(....) ; */
|
|
|
|
/* mtod(m, xxxxxx)->dlci = dlci; */
|
2000-12-12 18:52:14 +00:00
|
|
|
NG_SEND_DATA(error, xxxp->downstream_hook.hook,
|
1999-10-21 09:06:11 +00:00
|
|
|
m, meta);
|
|
|
|
xxxp->packets_out++;
|
|
|
|
} else {
|
|
|
|
/* data came from the multiplexed link */
|
|
|
|
dlci = 1; /* get dlci from header */
|
|
|
|
/* madjust(....) *//* chop off header */
|
|
|
|
for (chan = 0; chan < XXX_NUM_DLCIS; chan++)
|
|
|
|
if (xxxp->channel[chan].dlci == dlci)
|
|
|
|
break;
|
|
|
|
if (chan == XXX_NUM_DLCIS) {
|
|
|
|
NG_FREE_DATA(m, meta);
|
|
|
|
return (ENETUNREACH);
|
|
|
|
}
|
|
|
|
/* If we were called at splnet, use the following:
|
|
|
|
* NG_SEND_DATA(error, otherhook, m, meta); if this
|
|
|
|
* node is running at some SPL other than SPLNET
|
|
|
|
* then you should use instead: error =
|
|
|
|
* ng_queueit(otherhook, m, meta); m = NULL: meta =
|
|
|
|
* NULL; this queues the data using the standard
|
|
|
|
* NETISR system and schedules the data to be picked
|
|
|
|
* up again once the system has moved to SPLNET and
|
|
|
|
* the processing of the data can continue. after
|
|
|
|
* these are run 'm' and 'meta' should be considered
|
|
|
|
* as invalid and NG_SEND_DATA actually zaps them. */
|
|
|
|
NG_SEND_DATA(error, xxxp->channel[chan].hook, m, meta);
|
|
|
|
xxxp->packets_in++;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* It's the debug hook, throw it away.. */
|
|
|
|
if (hook == xxxp->downstream_hook.hook)
|
|
|
|
NG_FREE_DATA(m, meta);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
/*
|
|
|
|
* If this were a device node, the data may have been received in response
|
|
|
|
* to some interrupt.
|
|
|
|
* in which case it would probably look as follows:
|
|
|
|
*/
|
|
|
|
devintr()
|
|
|
|
{
|
2000-12-12 18:52:14 +00:00
|
|
|
int error;
|
1999-10-21 09:06:11 +00:00
|
|
|
* here */
|
|
|
|
|
|
|
|
/* get packet from device and send on */
|
|
|
|
m = MGET(blah blah)
|
2000-12-12 18:52:14 +00:00
|
|
|
|
|
|
|
NG_SEND_DATA_ONLY(error, xxxp->upstream_hook.hook, m);
|
|
|
|
/* see note above in xxx_rcvdata() */
|
|
|
|
/* and ng_xxx_connect() */
|
1999-10-21 09:06:11 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* 0 */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Do local shutdown processing..
|
|
|
|
* If we are a persistant device, we might refuse to go away, and
|
|
|
|
* we'd only remove our links and reset ourself.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
ng_xxx_rmnode(node_p node)
|
|
|
|
{
|
|
|
|
const xxx_p privdata = node->private;
|
|
|
|
|
|
|
|
node->flags |= NG_INVALID;
|
|
|
|
ng_cutlinks(node);
|
|
|
|
#ifndef PERSISTANT_NODE
|
|
|
|
ng_unname(node);
|
|
|
|
node->private = NULL;
|
|
|
|
ng_unref(privdata->node);
|
|
|
|
FREE(privdata, M_NETGRAPH);
|
|
|
|
#else
|
|
|
|
privdata->packets_in = 0; /* reset stats */
|
|
|
|
privdata->packets_out = 0;
|
|
|
|
node->flags &= ~NG_INVALID; /* reset invalid flag */
|
|
|
|
#endif /* PERSISTANT_NODE */
|
|
|
|
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)
|
|
|
|
{
|
2000-12-12 18:52:14 +00:00
|
|
|
#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 */
|
|
|
|
hook->peer->flags |= HK_QUEUE;
|
|
|
|
#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 (hook->private) {
|
|
|
|
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 *) hook->private)->dlci;
|
|
|
|
if (dlci == 1023) {
|
|
|
|
hook->flags |= HK_QUEUE;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
/* otherwise be really amiable and just say "YUP that's OK by me! " */
|
1999-10-21 09:06:11 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Dook disconnection
|
|
|
|
*
|
|
|
|
* For this type, removal of the last link destroys the node
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
ng_xxx_disconnect(hook_p hook)
|
|
|
|
{
|
|
|
|
if (hook->private)
|
1999-12-01 19:40:37 +00:00
|
|
|
((struct XXX_hookinfo *) (hook->private))->hook = NULL;
|
1999-10-21 09:06:11 +00:00
|
|
|
if (hook->node->numhooks == 0)
|
|
|
|
ng_rmnode(hook->node);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|