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/*
* Standard usb ethernet communications device.
*/
#include <u.h>
#include <libc.h>
#include <fcall.h>
#include <thread.h>
#include "usb.h"
#include "usbfs.h"
#include "ether.h"
static int
okclass(Iface *iface)
{
return Class(iface->csp) == Clcomms && Subclass(iface->csp) == Scether;
}
static int
getmac(Ether *ether)
{
int i;
Usbdev *ud;
uchar *b;
Desc *dd;
char *mac;
ud = ether->dev->usb;
for(i = 0; i < nelem(ud->ddesc); i++)
if((dd = ud->ddesc[i]) != nil && okclass(dd->iface)){
b = (uchar*)&dd->data;
if(b[1] == Dfunction && b[2] == Fnether){
mac = loaddevstr(ether->dev, b[3]);
if(mac != nil && strlen(mac) != 12){
free(mac);
mac = nil;
}
if(mac != nil){
parseaddr(ether->addr, mac);
free(mac);
return 0;
}
}
}
return -1;
}
int
cdcreset(Ether *ether)
{
/*
* Assume that all communication devices are going to
* be std. ethernet communication devices. Specific controllers
* must have been probed first.
* NB: This ignores unions.
*/
if(ether->dev->usb->class == Clcomms)
return getmac(ether);
return -1;
}
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