hi!
On Mon, Jun 25, 2007 at 11:50:03AM +0200, Heinrich Rebehn wrote:
> I have successfully set up a client for diskless(8) booting.
> However, this works only when booting from the first (onboard) nic.
> When i use another nic, the kernel still tries to do revarp from the
> first nic, which fails.
>
> sys/nfs/nfs_boot.c offers a possibility to override the default search:
>
> /*
> * Find a network interface.
> */
> if (nfsbootdevname)
> ifp = ifunit(nfsbootdevname);
> else <search loop>
> ...
>
> but where/how can i set nfsbootdevname?
>
> The boot.conf(8) manpage talks about passing options to the kernel via
> "set howto". Could i use that?
>
you cannot set the nfsbootdevname as a kernel option. it is filled in
by autoconf. for example, pxeboot passes the mac address of its boot
interface and autoconf looks up the matching network interface in
sys/arch/i386/i386/autoconf.c
---snip---
#if defined(NFSCLIENT)
if (bios_bootmac) {
extern char *nfsbootdevname;
struct ifnet *ifp;
mountroot = nfs_mountroot;
printf("PXE boot MAC address %s, ",
ether_sprintf(bios_bootmac->mac));
for (ifp = TAILQ_FIRST(&ifnet); ifp != NULL;
ifp = TAILQ_NEXT(ifp, if_list)) {
if ((ifp->if_type == IFT_ETHER ||
ifp->if_type == IFT_FDDI) &&
bcmp(bios_bootmac->mac,
((struct arpcom *)ifp)->ac_enaddr,
ETHER_ADDR_LEN) == 0)
break;
}
if (ifp) {
nfsbootdevname = ifp->if_xname;
printf("interface %s\n", nfsbootdevname);
} else
printf("no interface selected\n");
return;
}
#endif
---snap---
reyk
