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static char _if_iiid[] = "@(#)$Id: if_ii.c,v 1.2 1995/02/15 06:28:26 jkh Exp $";
/*******************************************************************************
* II - Version 0.1 $Revision: 1.2 $ $State: Exp $
*
* Copyright 1994 Dietmar Friede
*******************************************************************************
* Bug reports, patches, comments, suggestions should be sent to:
*
* jkr@saarlink.de or jkrause@guug.de
*
*******************************************************************************
* $Log: if_ii.c,v $
* Revision 1.2 1995/02/15 06:28:26 jkh
* Fix up include paths, nuke some warnings.
*
* Revision 1.1 1995/02/14 15:00:27 jkh
* An ISDN driver that supports the EDSS1 and the 1TR6 ISDN interfaces.
* EDSS1 is the "Euro-ISDN", 1TR6 is the soon obsolete german ISDN Interface.
* Obtained from: Dietmar Friede <dfriede@drnhh.neuhaus.de> and
* Juergen Krause <jkr@saarlink.de>
*
* This is only one part - the rest to follow in a couple of hours.
* This part is a benign import, since it doesn't affect anything else.
*
*
******************************************************************************/
/*
* Copyright (c) 1994 Dietmar Friede (dietmar@friede.de) All rights reserved.
* FSF/FSAG GNU Copyright applies
*
* A high level ip isdn driver.
*
* Uses loop driver as template. Small - and simple - is beautiful.
*/
#include "param.h"
#include "systm.h"
#include "mbuf.h"
#include "socket.h"
#include "errno.h"
#include "ioctl.h"
#include "protosw.h"
#include "net/if.h"
#include "net/if_types.h"
#include "net/netisr.h"
#include "net/route.h"
#ifdef INET
#include "netinet/in.h"
#include "netinet/in_systm.h"
#include "netinet/in_var.h"
#include "netinet/ip.h"
#endif
#include "ii.h"
#include "gnu/isdn/isdn_ioctl.h"
#define IIMTU 1500
static struct ifnet ii_if[NII];
static int applnr[NII];
static int next_if = 0;
int iioutput(), ii_ioctl();
int
iiattach(int ap)
{
register struct ifnet *ifp;
if (next_if >= NII)
return -1;
applnr[next_if] = ap;
ifp = &ii_if[next_if];
ifp->if_unit = next_if;
ifp->if_name = "ii";
ifp->if_mtu = IIMTU;
ifp->if_flags = IFF_SIMPLEX | IFF_POINTOPOINT ;
ifp->if_ioctl = ii_ioctl;
ifp->if_output = iioutput;
ifp->if_type = IFT_ISDNBASIC;
ifp->if_hdrlen = 0;
ifp->if_addrlen = 0;
ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
if_attach(ifp);
/* ifp->if_flags |= IFF_RUNNING; */
return next_if++;
}
int
iioutput(struct ifnet * ifp, struct mbuf * m, struct sockaddr * dst)
{
int s, isr;
register struct ifqueue *ifq = 0;
if (dst->sa_family != AF_INET)
{
m_freem(m);
return EAFNOSUPPORT;
}
s = splhigh();
if (IF_QFULL(&ifp->if_snd))
{
IF_DROP(&ifp->if_snd);
m_freem(m);
ifp->if_oerrors++;
isdn_output(applnr[ifp->if_unit]);
splx(s);
return (ENOBUFS);
}
IF_ENQUEUE(&ifp->if_snd, m);
ifp->if_opackets++;
ifp->if_obytes += m->m_pkthdr.len;
isdn_output(applnr[ifp->if_unit]);
splx(s);
return (0);
}
int
ii_input(int no, int len, char *buf)
{
int error = 0;
struct mbuf *m;
struct ifnet *ifp = &(ii_if[no]);
int s;
s = splhigh();
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == 0)
{
splx(s);
return (0);
}
if (len >= MHLEN)
{
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0)
{
(void) m_free(m);
splx(s);
return (0);
}
}
bcopy((caddr_t) buf, mtod(m, caddr_t), len);
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = len;
m->m_len = len;
if (IF_QFULL(&ipintrq))
{
IF_DROP(&ipintrq);
ifp->if_ierrors++;
m_freem(m);
splx(s);
return(0);
}
IF_ENQUEUE(&ipintrq, m);
ifp->if_ipackets++;
schednetisr(NETISR_IP);
splx(s);
return(len);
}
void
ii_connect(int no)
{
struct ifnet *ifp = &ii_if[no];
ifp->if_flags |= IFF_RUNNING;
}
void
ii_disconnect(int no)
{
struct ifnet *ifp = &ii_if[no];
ifp->if_flags &= ~IFF_RUNNING;
}
int
ii_out(int no, char *buf, int len)
{
struct ifnet *ifp = &ii_if[no];
struct mbuf *m0, *m;
int l;
IF_DEQUEUE(&ifp->if_snd, m);
if (m == 0)
{
return (0);
}
/*
* Copy the mbuf chain into the transmit buf
*/
l = 0;
for (m0 = m; m != 0; m = m->m_next)
{
if((l+= m->m_len) > len)
{
m_freem(m0);
return(0);
}
bcopy(mtod(m, caddr_t), buf, m->m_len);
buf += m->m_len;
}
m_freem(m0);
return (l);
}
/*
* Process an ioctl request.
*/
int
ii_ioctl(ifp, cmd, data)
register struct ifnet *ifp;
int cmd;
caddr_t data;
{
struct ifaddr *ifa = (struct ifaddr *) data;
struct ifreq *ifr = (struct ifreq *) data;
int s;
switch (cmd)
{
case SIOCSIFDSTADDR:
case SIOCAIFADDR:
case SIOCSIFADDR:
if (ifa->ifa_addr->sa_family != AF_INET)
return(EAFNOSUPPORT);
ifp->if_flags |= IFF_UP;
/* FALLTHROUGH */
case SIOCSIFFLAGS:
s= splhigh();
if((!(ifp->if_flags & IFF_UP)) && (ifp->if_flags & IFF_RUNNING))
{
isdn_disconnect(applnr[ifp->if_unit],0);
ifp->if_flags &= ~IFF_RUNNING;
}
break;
case SIOCSIFMTU:
ifr->ifr_metric = ifp->if_mtu;
break;
case SIOCGIFMTU:
if(ifr->ifr_metric < 2048)
return(EAFNOSUPPORT);
ifp->if_mtu = ifr->ifr_metric;
break;
default:
printf("IIO %x",cmd);
return(EINVAL);
}
return(0);
}
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