static int
virtif_clone(struct if_clone *ifc, int num)
{
struct virtif_sc *sc;
struct ifnet *ifp;
int error = 0;
sc = kmem_zalloc(sizeof(*sc), KM_SLEEP);
sc->sc_num = num;
ifp = &sc->sc_ec.ec_if;
if_initname(ifp, VIF_NAME, num);
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_init = virtif_init;
ifp->if_ioctl = virtif_ioctl;
ifp->if_start = virtif_start;
ifp->if_stop = virtif_stop;
ifp->if_mtu = ETHERMTU;
ifp->if_dlt = DLT_EN10MB;
if_attach(ifp);
#ifndef RUMP_VIF_LINKSTR
/*
* if the underlying interface does not expect linkstr, we can
* create everything now. Otherwise, we need to wait for
* SIOCSLINKSTR.
*/
#define LINKSTRNUMLEN 16
sc->sc_linkstr = kmem_alloc(LINKSTRNUMLEN, KM_SLEEP);
snprintf(sc->sc_linkstr, LINKSTRNUMLEN, "%d", sc->sc_num);
#undef LINKSTRNUMLEN
error = virtif_create(ifp);
if (error) {
if_detach(ifp);
kmem_free(sc, sizeof(*sc));
ifp->if_softc = NULL;
}
#endif /* !RUMP_VIF_LINKSTR */
return error;
}
int
rump_virtif_create(struct ifaliasreq *ia, struct ifnet **ifpp)
{
return virtif_create(ia, ifpp);
}
static int
virtif_ioctl(struct ifnet *ifp, u_long cmd, void *data)
{
struct virtif_sc *sc = ifp->if_softc;
int rv;
switch (cmd) {
#ifdef RUMP_VIF_LINKSTR
struct ifdrv *ifd;
size_t linkstrlen;
#ifndef RUMP_VIF_LINKSTRMAX
#define RUMP_VIF_LINKSTRMAX 4096
#endif
case SIOCGLINKSTR:
ifd = data;
if (!sc->sc_linkstr) {
rv = ENOENT;
break;
}
linkstrlen = strlen(sc->sc_linkstr)+1;
if (ifd->ifd_cmd == IFLINKSTR_QUERYLEN) {
ifd->ifd_len = linkstrlen;
rv = 0;
break;
}
if (ifd->ifd_cmd != 0) {
rv = ENOTTY;
break;
}
rv = copyoutstr(sc->sc_linkstr,
ifd->ifd_data, MIN(ifd->ifd_len,linkstrlen), NULL);
break;
case SIOCSLINKSTR:
if (ifp->if_flags & IFF_UP) {
rv = EBUSY;
break;
}
ifd = data;
if (ifd->ifd_cmd == IFLINKSTR_UNSET) {
panic("unset linkstr not implemented");
} else if (ifd->ifd_cmd != 0) {
rv = ENOTTY;
break;
} else if (sc->sc_linkstr) {
rv = EBUSY;
break;
}
if (ifd->ifd_len > RUMP_VIF_LINKSTRMAX) {
rv = E2BIG;
break;
} else if (ifd->ifd_len < 1) {
rv = EINVAL;
break;
}
sc->sc_linkstr = kmem_alloc(ifd->ifd_len, KM_SLEEP);
rv = copyinstr(ifd->ifd_data, sc->sc_linkstr,
ifd->ifd_len, NULL);
if (rv) {
kmem_free(sc->sc_linkstr, ifd->ifd_len);
break;
}
rv = virtif_create(ifp);
if (rv) {
kmem_free(sc->sc_linkstr, ifd->ifd_len);
}
break;
#endif /* RUMP_VIF_LINKSTR */
default:
if (!sc->sc_linkstr)
rv = ENXIO;
else
rv = ether_ioctl(ifp, cmd, data);
if (rv == ENETRESET)
rv = 0;
break;
}
return rv;
}