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#include <sys/types.h>
#include <sys/errno.h>
#include <sys/conf.h>
#include <sun/vddrv.h>
extern struct streamtab ppp_ahdlcinfo;
extern int ppp_ahdlc_count;
static struct vdldrv vd = {
VDMAGIC_USER,
"ppp_ahdl"
};
static int fmodsw_index = -1;
int
ppp_ahdlc_vdcmd(fun, vdp, vdi, vds)
unsigned int fun;
struct vddrv *vdp;
addr_t vdi;
struct vdstat *vds;
{
int n;
switch (fun) {
case VDLOAD:
vdp->vdd_vdtab = (struct vdlinkage *) &vd;
if (fmodsw_index >= 0)
return EBUSY;
for (n = 0; n < fmodcnt; ++n)
if (fmodsw[n].f_str == 0)
break;
if (n >= fmodcnt)
return ENODEV;
strncpy(fmodsw[n].f_name, vd.Drv_name, FMNAMESZ+1);
fmodsw[n].f_str = &ppp_ahdlcinfo;
fmodsw_index = n;
break;
case VDUNLOAD:
if (ppp_ahdlc_count > 0)
return EBUSY;
if (fmodsw_index <= 0)
return EINVAL;
fmodsw[fmodsw_index].f_name[0] = 0;
fmodsw[fmodsw_index].f_str = 0;
fmodsw_index = -1;
break;
case VDSTAT:
break;
default:
return EIO;
}
return 0;
}
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