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freebsd-skq/sys/i4b/driver/i4b_ing.c
julian ff86256bf7 Part 2 of the netgraph rewrite. 
This is mostly cosmetic changes, (though I caught a bug or two while
makeing them)
Reviewed by:	archie@freebsd.org
2001-01-08 05:34:06 +00:00

882 lines
22 KiB
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/*
* Copyright (c) 1999, 2000 Hellmuth Michaelis. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON 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 ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*---------------------------------------------------------------------------
*
* i4b_ing.c - isdn4bsd B-channel to netgraph driver
* -------------------------------------------------
*
* $Id: i4b_ing.c,v 1.10 2000/04/27 11:35:00 hm Exp $
*
* $FreeBSD$
*
* last edit-date: [Thu Nov 9 11:29:12 2000]
*
*---------------------------------------------------------------------------*/
#include "i4bing.h"
#if NI4BING > 0
#include "opt_i4b.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <net/if.h>
#include <netgraph/ng_message.h>
#include <netgraph/ng_parse.h>
#include <netgraph/netgraph.h>
#include <machine/i4b_ioctl.h>
#include <machine/i4b_debug.h>
#include <i4b/include/i4b_global.h>
#include <i4b/include/i4b_l3l4.h>
#include <i4b/layer4/i4b_l4.h>
#define I4BINGACCT 1 /* enable accounting messages */
#define I4BINGACCTINTVL 2 /* accounting msg interval in secs */
#define I4BINGMAXQLEN 50 /* max queue length */
/* initialized by L4 */
static drvr_link_t ing_drvr_linktab[NI4BING];
static isdn_link_t *isdn_linktab[NI4BING];
struct ing_softc {
int sc_unit; /* unit number */
int sc_state; /* state of the interface */
call_desc_t *sc_cdp; /* ptr to call descriptor */
int sc_updown; /* soft state of interface */
struct ifqueue sc_fastq; /* interactive traffic */
int sc_dialresp; /* dialresponse */
int sc_lastdialresp;/* last dialresponse */
#if I4BINGACCT
struct callout_handle sc_callout;
int sc_iinb; /* isdn driver # of inbytes */
int sc_ioutb; /* isdn driver # of outbytes */
int sc_inb; /* # of bytes rx'd */
int sc_outb; /* # of bytes tx'd */
int sc_linb; /* last # of bytes rx'd */
int sc_loutb; /* last # of bytes tx'd */
int sc_fn; /* flag, first null acct */
#endif
int sc_inpkt; /* incoming packets */
int sc_outpkt; /* outgoing packets */
struct ifqueue xmitq_hipri; /* hi-priority transmit queue */
struct ifqueue xmitq; /* transmit queue */
node_p node; /* back pointer to node */
char nodename[NG_NODELEN + 1]; /* store our node name */
hook_p debughook;
hook_p hook;
u_int packets_in; /* packets in from downstream */
u_int packets_out; /* packets out towards downstream */
u_int32_t flags;
} ing_softc[NI4BING];
enum ing_states {
ST_IDLE, /* initialized, ready, idle */
ST_DIALING, /* dialling out to remote */
ST_CONNECTED /* connected to remote */
};
static void i4bingattach(void *);
PSEUDO_SET(i4bingattach, i4b_ing);
static void ing_init_linktab(int unit);
static void ing_tx_queue_empty(int unit);
/* ========= NETGRAPH ============= */
#define NG_ING_NODE_TYPE "i4bing" /* node type name */
#define NGM_ING_COOKIE 947513046 /* node type cookie */
/* Hook names */
#define NG_ING_HOOK_DEBUG "debug"
#define NG_ING_HOOK_RAW "rawdata"
/* Netgraph commands understood by this node type */
enum {
NGM_ING_SET_FLAG = 1,
NGM_ING_GET_STATUS,
};
/* This structure is returned by the NGM_ING_GET_STATUS command */
struct ngingstat {
u_int packets_in; /* packets in from downstream */
u_int packets_out; /* packets out towards downstream */
};
/*
* This is used to define the 'parse type' for a struct ngingstat, which
* is bascially a description of how to convert a binary struct ngingstat
* to an ASCII string and back. See ng_parse.h for more info.
*
* This needs to be kept in sync with the above structure definition
*/
#define NG_ING_STATS_TYPE_INFO { \
{ \
{ "packets_in", &ng_parse_int32_type }, \
{ "packets_out", &ng_parse_int32_type }, \
{ NULL }, \
} \
}
/*
* This section contains the netgraph method declarations for the
* sample node. These methods define the netgraph 'type'.
*/
static ng_constructor_t ng_ing_constructor;
static ng_rcvmsg_t ng_ing_rcvmsg;
static ng_shutdown_t ng_ing_shutdown;
static ng_newhook_t ng_ing_newhook;
static ng_connect_t ng_ing_connect;
static ng_rcvdata_t ng_ing_rcvdata;
static ng_disconnect_t ng_ing_disconnect;
/* Parse type for struct ngingstat */
static const struct
ng_parse_struct_info ng_ing_stat_type_info = NG_ING_STATS_TYPE_INFO;
static const struct ng_parse_type ng_ing_stat_type = {
&ng_parse_struct_type,
&ng_ing_stat_type_info
};
/* List of commands and how to convert arguments to/from ASCII */
static const struct ng_cmdlist ng_ing_cmdlist[] = {
{
NGM_ING_COOKIE,
NGM_ING_GET_STATUS,
"getstatus",
NULL,
&ng_ing_stat_type,
},
{
NGM_ING_COOKIE,
NGM_ING_SET_FLAG,
"setflag",
&ng_parse_int32_type,
NULL
},
{ 0 }
};
/* Netgraph node type descriptor */
static struct ng_type typestruct = {
NG_ABI_VERSION,
NG_ING_NODE_TYPE,
NULL,
ng_ing_constructor,
ng_ing_rcvmsg,
ng_ing_shutdown,
ng_ing_newhook,
NULL,
ng_ing_connect,
ng_ing_rcvdata,
ng_ing_disconnect,
ng_ing_cmdlist
};
NETGRAPH_INIT_ORDERED(ing, &typestruct, SI_SUB_DRIVERS, SI_ORDER_ANY);
/*===========================================================================*
* DEVICE DRIVER ROUTINES
*===========================================================================*/
/*---------------------------------------------------------------------------*
* interface attach routine at kernel boot time
*---------------------------------------------------------------------------*/
static void
i4bingattach(void *dummy)
{
struct ing_softc *sc = ing_softc;
int i;
int ret;
printf("i4bing: %d i4b NetGraph ISDN B-channel device(s) attached\n", NI4BING);
for(i=0; i < NI4BING; sc++, i++)
{
sc->sc_unit = i;
ing_init_linktab(i);
NDBGL4(L4_DIALST, "setting dial state to ST_IDLE");
sc->sc_state = ST_IDLE;
sc->sc_fastq.ifq_maxlen = I4BINGMAXQLEN;
mtx_init(&sc->sc_fastq.ifq_mtx, "i4b_ing_fastq", MTX_DEF);
#if I4BINGACCT
callout_handle_init(&sc->sc_callout);
sc->sc_iinb = 0;
sc->sc_ioutb = 0;
sc->sc_inb = 0;
sc->sc_outb = 0;
sc->sc_linb = 0;
sc->sc_loutb = 0;
sc->sc_fn = 1;
#endif
sc->sc_inpkt = 0;
sc->sc_outpkt = 0;
sc->sc_updown = SOFT_ENA; /* soft enabled */
sc->sc_dialresp = DSTAT_NONE; /* no response */
sc->sc_lastdialresp = DSTAT_NONE;
/* setup a netgraph node */
if ((ret = ng_make_node_common(&typestruct, &sc->node)))
{
printf("ing: ng_make_node_common, ret = %d\n!", ret);
}
/* name the netgraph node */
sprintf(sc->nodename, "%s%d", NG_ING_NODE_TYPE, sc->sc_unit);
if((ret = ng_name_node(sc->node, sc->nodename)))
{
printf("ing: ng_name node, ret = %d\n!", ret);
NG_NODE_UNREF(sc->node);
break;
}
NG_NODE_SET_PRIVATE(sc->node, sc);
sc->xmitq.ifq_maxlen = IFQ_MAXLEN;
sc->xmitq_hipri.ifq_maxlen = IFQ_MAXLEN;
mtx_init(&sc->xmitq.ifq_mtx, "i4b_ing_xmitq", MTX_DEF);
mtx_init(&sc->xmitq_hipri.ifq_mtx, "i4b_ing_hipri", MTX_DEF);
}
}
#ifdef I4BINGACCT
/*---------------------------------------------------------------------------*
* accounting timeout routine
*---------------------------------------------------------------------------*/
static void
ing_timeout(struct ing_softc *sc)
{
bchan_statistics_t bs;
int unit = sc->sc_unit;
/* get # of bytes in and out from the HSCX driver */
(*isdn_linktab[unit]->bch_stat)
(isdn_linktab[unit]->unit, isdn_linktab[unit]->channel, &bs);
sc->sc_ioutb += bs.outbytes;
sc->sc_iinb += bs.inbytes;
if((sc->sc_iinb != sc->sc_linb) || (sc->sc_ioutb != sc->sc_loutb) || sc->sc_fn)
{
int ri = (sc->sc_iinb - sc->sc_linb)/I4BINGACCTINTVL;
int ro = (sc->sc_ioutb - sc->sc_loutb)/I4BINGACCTINTVL;
if((sc->sc_iinb == sc->sc_linb) && (sc->sc_ioutb == sc->sc_loutb))
sc->sc_fn = 0;
else
sc->sc_fn = 1;
sc->sc_linb = sc->sc_iinb;
sc->sc_loutb = sc->sc_ioutb;
i4b_l4_accounting(BDRV_ING, unit, ACCT_DURING,
sc->sc_ioutb, sc->sc_iinb, ro, ri, sc->sc_ioutb, sc->sc_iinb);
}
sc->sc_callout = timeout((TIMEOUT_FUNC_T)ing_timeout,
(void *)sc, I4BINGACCTINTVL*hz);
}
#endif /* I4BINGACCT */
#if 0
/*---------------------------------------------------------------------------*
* clear the interface's send queues
*---------------------------------------------------------------------------*/
static void
ingclearqueue(struct ifqueue *iq)
{
int x;
x = splimp();
IF_DRAIN(iq);
splx(x);
}
#endif
/*===========================================================================*
* ISDN INTERFACE ROUTINES
*===========================================================================*/
/*---------------------------------------------------------------------------*
* this routine is called from L4 handler at connect time
*---------------------------------------------------------------------------*/
static void
ing_connect(int unit, void *cdp)
{
struct ing_softc *sc = &ing_softc[unit];
int s;
sc->sc_cdp = (call_desc_t *)cdp;
s = SPLI4B();
NDBGL4(L4_DIALST, "ing%d: setting dial state to ST_CONNECTED", unit);
sc->sc_dialresp = DSTAT_NONE;
sc->sc_lastdialresp = DSTAT_NONE;
#if I4BINGACCT
sc->sc_iinb = 0;
sc->sc_ioutb = 0;
sc->sc_inb = 0;
sc->sc_outb = 0;
sc->sc_linb = 0;
sc->sc_loutb = 0;
sc->sc_callout = timeout((TIMEOUT_FUNC_T)ing_timeout,
(void *)sc, I4BINGACCTINTVL*hz);
#endif
sc->sc_state = ST_CONNECTED;
splx(s);
}
/*---------------------------------------------------------------------------*
* this routine is called from L4 handler at disconnect time
*---------------------------------------------------------------------------*/
static void
ing_disconnect(int unit, void *cdp)
{
call_desc_t *cd = (call_desc_t *)cdp;
struct ing_softc *sc = &ing_softc[unit];
/* new stuff to check that the active channel is being closed */
if (cd != sc->sc_cdp)
{
NDBGL4(L4_INGDBG, "ing%d: channel %d not active",
cd->driver_unit, cd->channelid);
return;
}
#if I4BINGACCT
untimeout((TIMEOUT_FUNC_T)ing_timeout,
(void *)sc, sc->sc_callout);
#endif
i4b_l4_accounting(BDRV_ING, cd->driver_unit, ACCT_FINAL,
sc->sc_ioutb, sc->sc_iinb, 0, 0, sc->sc_outb, sc->sc_inb);
sc->sc_cdp = (call_desc_t *)0;
NDBGL4(L4_DIALST, "setting dial state to ST_IDLE");
sc->sc_dialresp = DSTAT_NONE;
sc->sc_lastdialresp = DSTAT_NONE;
sc->sc_state = ST_IDLE;
}
/*---------------------------------------------------------------------------*
* this routine is used to give a feedback from userland daemon
* in case of dial problems
*---------------------------------------------------------------------------*/
static void
ing_dialresponse(int unit, int status, cause_t cause)
{
struct ing_softc *sc = &ing_softc[unit];
sc->sc_dialresp = status;
NDBGL4(L4_INGDBG, "ing%d: last=%d, this=%d",
unit, sc->sc_lastdialresp, sc->sc_dialresp);
if(status != DSTAT_NONE)
{
NDBGL4(L4_INGDBG, "ing%d: clearing queues", unit);
/* ingclearqueues(sc); */
}
}
/*---------------------------------------------------------------------------*
* interface soft up/down
*---------------------------------------------------------------------------*/
static void
ing_updown(int unit, int updown)
{
struct ing_softc *sc = &ing_softc[unit];
sc->sc_updown = updown;
}
/*---------------------------------------------------------------------------*
* this routine is called from the HSCX interrupt handler
* when a new frame (mbuf) has been received and was put on
* the rx queue. It is assumed that this routines runs at
* pri level splimp() ! Keep it short !
*---------------------------------------------------------------------------*/
static void
ing_rx_data_rdy(int unit)
{
register struct ing_softc *sc = &ing_softc[unit];
register struct mbuf *m;
int error;
if((m = *isdn_linktab[unit]->rx_mbuf) == NULL)
return;
#if I4BINGACCT
sc->sc_inb += m->m_pkthdr.len;
#endif
m->m_pkthdr.rcvif = NULL;
sc->sc_inpkt++;
NG_SEND_DATA_ONLY(error, sc->hook, m);
}
/*---------------------------------------------------------------------------*
* this routine is called from the HSCX interrupt handler
* when the last frame has been sent out and there is no
* further frame (mbuf) in the tx queue.
*---------------------------------------------------------------------------*/
static void
ing_tx_queue_empty(int unit)
{
register struct ing_softc *sc = &ing_softc[unit];
register struct mbuf *m;
int x = 0;
if(sc->sc_state != ST_CONNECTED)
return;
for(;;)
{
IF_DEQUEUE(&sc->xmitq_hipri, m);
if(m == NULL)
{
IF_DEQUEUE(&sc->xmitq, m);
if(m == NULL)
break;
}
#if I4BINGACCT
sc->sc_outb += m->m_pkthdr.len;
#endif
x = 1;
if(! IF_HANDOFF(isdn_linktab[unit]->tx_queue, m, NULL))
{
NDBGL4(L4_INGDBG, "ing%d: tx queue full!", unit);
}
}
if(x)
(*isdn_linktab[unit]->bch_tx_start)(isdn_linktab[unit]->unit, isdn_linktab[unit]->channel);
}
/*---------------------------------------------------------------------------*
* this routine is called from the HSCX interrupt handler
* each time a packet is received or transmitted. It should
* be used to implement an activity timeout mechanism.
*---------------------------------------------------------------------------*/
static void
ing_activity(int unit, int rxtx)
{
ing_softc[unit].sc_cdp->last_active_time = SECOND;
}
/*---------------------------------------------------------------------------*
* return this drivers linktab address
*---------------------------------------------------------------------------*/
drvr_link_t *
ing_ret_linktab(int unit)
{
return(&ing_drvr_linktab[unit]);
}
/*---------------------------------------------------------------------------*
* setup the isdn_linktab for this driver
*---------------------------------------------------------------------------*/
void
ing_set_linktab(int unit, isdn_link_t *ilt)
{
isdn_linktab[unit] = ilt;
}
/*---------------------------------------------------------------------------*
* initialize this drivers linktab
*---------------------------------------------------------------------------*/
static void
ing_init_linktab(int unit)
{
ing_drvr_linktab[unit].unit = unit;
ing_drvr_linktab[unit].bch_rx_data_ready = ing_rx_data_rdy;
ing_drvr_linktab[unit].bch_tx_queue_empty = ing_tx_queue_empty;
ing_drvr_linktab[unit].bch_activity = ing_activity;
ing_drvr_linktab[unit].line_connected = ing_connect;
ing_drvr_linktab[unit].line_disconnected = ing_disconnect;
ing_drvr_linktab[unit].dial_response = ing_dialresponse;
ing_drvr_linktab[unit].updown_ind = ing_updown;
}
/*===========================================================================*
* NETGRAPH INTERFACE ROUTINES
*===========================================================================*/
/*---------------------------------------------------------------------------*
* It is not possible or allowable to create a node of this type.
* If the hardware exists, it will already have created it.
*---------------------------------------------------------------------------*/
static int
ng_ing_constructor(node_p node)
{
return(EINVAL);
}
/*---------------------------------------------------------------------------*
* Give our ok for a hook to be added...
* Add the hook's private info to the hook structure.
*---------------------------------------------------------------------------*/
static int
ng_ing_newhook(node_p node, hook_p hook, const char *name)
{
struct ing_softc *sc = NG_NODE_PRIVATE(node);
/*
* check if it's our friend the debug hook
*/
if(strcmp(name, NG_ING_HOOK_DEBUG) == 0)
{
NG_HOOK_SET_PRIVATE(hook, NULL); /* paranoid */
sc->debughook = hook;
return (0);
}
/*
* Check for raw mode hook.
*/
if(strcmp(name, NG_ING_HOOK_RAW) == 0)
{
NG_HOOK_SET_PRIVATE(hook, sc);
sc->hook = hook;
return (0);
}
return (EINVAL);
}
/*---------------------------------------------------------------------------*
* 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.
*---------------------------------------------------------------------------*/
#if defined(__FreeBSD_version) && __FreeBSD_version >= 500000
static int
ng_ing_rcvmsg(node_p node, item_p item, hook_p lasthook)
#else
static int
ng_ing_rcvmsg(node_p node, struct ng_mesg *msg, const char *retaddr,
struct ng_mesg **rptr)
#endif
{
struct ing_softc *sc = NG_NODE_PRIVATE(node);
struct ng_mesg *resp = NULL;
int error = 0;
#if defined(__FreeBSD_version) && __FreeBSD_version >= 500000
struct ng_mesg *msg;
NGI_GET_MSG(item, msg);
#endif
if(msg->header.typecookie == NGM_GENERIC_COOKIE)
{
switch(msg->header.cmd)
{
case NGM_TEXT_STATUS:
{
char *arg;
char *p;
int pos = 0;
NG_MKRESPONSE(resp, msg, sizeof(struct ng_mesg) + NG_TEXTRESPONSE, M_NOWAIT);
if (resp == NULL)
{
error = ENOMEM;
break;
}
arg = (char *) resp->data;
switch(sc->sc_state)
{
case ST_IDLE:
p = "idle";
break;
case ST_DIALING:
p = "dialing";
break;
case ST_CONNECTED:
p = "connected";
break;
default:
p = "???";
break;
}
pos = sprintf(arg, "state = %s (%d)\n", p, sc->sc_state);
#if I4BINGACCT
pos += sprintf(arg + pos, "%d bytes in, %d bytes out\n", sc->sc_inb, sc->sc_outb);
#endif
pos += sprintf(arg + pos, "%d pkts in, %d pkts out\n", sc->sc_inpkt, sc->sc_outpkt);
resp->header.arglen = pos + 1;
break;
}
default:
error = EINVAL;
break;
}
}
else if(msg->header.typecookie == NGM_ING_COOKIE)
{
switch (msg->header.cmd)
{
case NGM_ING_GET_STATUS:
{
struct ngingstat *stats;
NG_MKRESPONSE(resp, msg, sizeof(*stats), M_NOWAIT);
if (!resp)
{
error = ENOMEM;
break;
}
stats = (struct ngingstat *) resp->data;
stats->packets_in = sc->packets_in;
stats->packets_out = sc->packets_out;
break;
}
case NGM_ING_SET_FLAG:
if (msg->header.arglen != sizeof(u_int32_t))
{
error = EINVAL;
break;
}
sc->flags = *((u_int32_t *) msg->data);
break;
default:
error = EINVAL; /* unknown command */
break;
}
}
else
{
error = EINVAL; /* unknown cookie type */
}
/* Take care of synchronous response, if any */
NG_RESPOND_MSG(error, node, item, resp);
/* Free the message and return */
NG_FREE_MSG(msg);
return(error);
}
/*---------------------------------------------------------------------------*
* get data from another node and transmit it out on a B-channel
*---------------------------------------------------------------------------*/
#if defined(__FreeBSD_version) && __FreeBSD_version >= 500000
static int
ng_ing_rcvdata(hook_p hook, item_p item)
#else
static int
ng_ing_rcvdata(hook_p hook, struct mbuf *m, meta_p meta)
#endif
{
struct ing_softc *sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
struct ifqueue *xmitq_p;
int s;
#if defined(__FreeBSD_version) && __FreeBSD_version >= 500000
struct mbuf *m;
meta_p meta;
NGI_GET_M(item, m);
NGI_GET_META(item, meta);
NG_FREE_ITEM(item);
#endif
if(NG_HOOK_PRIVATE(hook) == NULL)
{
NG_FREE_M(m);
NG_FREE_META(meta);
return(ENETDOWN);
}
if(sc->sc_state == ST_IDLE || sc->sc_state == ST_DIALING)
{
i4b_l4_dialout(BDRV_ING, sc->sc_unit);
sc->sc_state = ST_DIALING;
}
sc->sc_outpkt++;
/*
* Now queue the data for when it can be sent
*/
if (meta && meta->priority > 0)
{
xmitq_p = (&sc->xmitq_hipri);
}
else
{
xmitq_p = (&sc->xmitq);
}
s = splimp();
IF_LOCK(xmitq_p);
if (_IF_QFULL(xmitq_p))
{
_IF_DROP(xmitq_p);
IF_UNLOCK(xmitq_p);
splx(s);
NG_FREE_M(m);
NG_FREE_META(meta);
return(ENOBUFS);
}
_IF_ENQUEUE(xmitq_p, m);
IF_UNLOCK(xmitq_p);
ing_tx_queue_empty(sc->sc_unit);
splx(s);
return (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_ing_shutdown(node_p node)
{
struct ing_softc *sc = NG_NODE_PRIVATE(node);
int ret;
NG_NODE_UNREF(node);
sc->packets_in = 0; /* reset stats */
sc->packets_out = 0;
if ((ret = ng_make_node_common(&typestruct, &sc->node)))
{
printf("ing: ng_make_node_common, ret = %d\n!", ret);
}
/* name the netgraph node */
sprintf(sc->nodename, "%s%d", NG_ING_NODE_TYPE, sc->sc_unit);
if((ret = ng_name_node(sc->node, sc->nodename)))
{
printf("ing: ng_name node, ret = %d\n!", ret);
NG_NODE_UNREF(sc->node);
return (0);
}
NG_NODE_SET_PRIVATE(sc->node, sc);
return (0);
}
/*---------------------------------------------------------------------------*
* This is called once we've already connected a new hook to the other node.
*---------------------------------------------------------------------------*/
static int
ng_ing_connect(hook_p hook)
{
/* probably not at splnet, force outward queueing */
NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
return (0);
}
/*
* Dook disconnection
*
* For this type, removal of the last link destroys the node
*/
static int
ng_ing_disconnect(hook_p hook)
{
struct ing_softc *sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
int s;
if(NG_HOOK_PRIVATE(hook))
{
s = splimp();
splx(s);
}
else
{
sc->debughook = NULL;
}
return (0);
}
/*===========================================================================*/
#endif /* NI4BING > 0 */
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