static gboolean link_dump_tvs(gpointer key, gpointer value, gpointer data)
{
gchar *msg_link;
gchar *tmp;
gchar **msg = (gchar **)data;
const link_t *link = (const link_t *)value;
msg_link = link_dump(link);
tmp = *msg;
*msg = g_strdup_printf("%slink %p:\n%s\n", tmp, link, msg_link);
g_free(tmp);
g_free(msg_link);
return FALSE;
}
/**
* ifaceGetNthParent
*
* @ifindex : the index of the interface or -1 if ifname is given
* @ifname : the name of the interface; ignored if ifindex is valid
* @nthParent : the nth parent interface to get
* @parent_ifindex : pointer to int
* @parent_ifname : pointer to buffer of size IFNAMSIZ
* @nth : the nth parent that is actually returned; if for example eth0.100
* was given and the 100th parent is to be returned, then eth0 will
* most likely be returned with nth set to 1 since the chain does
* not have more interfaces
*
* Get the nth parent interface of the given interface. 0 is the interface
* itself.
*
* Return 0 on success, != 0 otherwise
*/
static int
ifaceGetNthParent(int ifindex, const char *ifname, unsigned int nthParent,
int *parent_ifindex, char *parent_ifname,
unsigned int *nth)
{
int rc;
struct nlattr *tb[IFLA_MAX + 1] = { NULL, };
char *recvbuf = NULL;
bool end = false;
unsigned int i = 0;
*nth = 0;
if (ifindex <= 0 && ifaceGetIndex(true, ifname, &ifindex) != 0)
return 1;
while (!end && i <= nthParent) {
rc = link_dump(true, ifname, ifindex, tb, &recvbuf);
if (rc)
break;
if (tb[IFLA_IFNAME]) {
if (!virStrcpy(parent_ifname, (char*)RTA_DATA(tb[IFLA_IFNAME]),
IFNAMSIZ)) {
macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
_("buffer for root interface name is too small"));
VIR_FREE(recvbuf);
return 1;
}
*parent_ifindex = ifindex;
}
if (tb[IFLA_LINK]) {
ifindex = *(int *)RTA_DATA(tb[IFLA_LINK]);
ifname = NULL;
} else
end = true;
VIR_FREE(recvbuf);
i++;
}
if (nth)
*nth = i - 1;
return rc;
}
