static void
get_flags_sync_cb (struct nl_object *obj, void *arg)
{
GetFlagsInfo *info = arg;
/* Ensure this cache item matches our filter */
if (nl_object_match_filter (obj, OBJ_CAST (info->filter)) != 0)
info->flags = rtnl_link_get_flags ((struct rtnl_link *) obj);
}
static void get_neigh_cb_event(struct nl_object *obj, void *arg)
{
struct get_neigh_handler *neigh_handler =
(struct get_neigh_handler *)arg;
/* assumed serilized callback (no parallel execution of function) */
if (nl_object_match_filter(
obj,
(struct nl_object *)neigh_handler->filter_neigh)) {
struct rtnl_neigh *neigh = (struct rtnl_neigh *)obj;
/* check that we didn't set it already */
if (neigh_handler->found_ll_addr == NULL) {
if (rtnl_neigh_get_lladdr(neigh) == NULL)
return;
neigh_handler->found_ll_addr =
nl_addr_clone(rtnl_neigh_get_lladdr(neigh));
}
}
}
static void
iface_mon_handler2(struct nl_object *obj, void *arg)
{
struct rtnl_link *filter;
struct rtnl_link *link_obj;
int flags, up;
char *ifname;
iface_mon_cb cb = (iface_mon_cb)arg;
filter = rtnl_link_alloc();
if (!filter) {
fprintf(stderr, "error allocating filter\n");
return;
}
if (nl_object_match_filter (obj, OBJ_CAST (filter)) == 0) {
rtnl_link_put(filter);
return;
}
link_obj = (struct rtnl_link *) obj;
flags = rtnl_link_get_flags (link_obj);
ifname = rtnl_link_get_name(link_obj);
/*
* You can't bind a PF_PACKET socket to an interface that's not
* up, so an interface going down is an "interface should be
* removed" indication.
*
* XXX - what indication, if any, do we get if the interface
* *completely goes away*?
*
* XXX - can we get events if an interface's link-layer or
* network addresses change?
*/
up = (flags & IFF_UP) ? 1 : 0;
cb(ifname, up);
rtnl_link_put(filter);
return;
}
static void
link_msg_handler (struct nl_object *obj, void *arg)
{
NMNetlinkMonitor *self = NM_NETLINK_MONITOR (arg);
struct rtnl_link *filter;
struct rtnl_link *link_obj;
guint flags;
guint ifidx;
filter = rtnl_link_alloc ();
if (!filter) {
log_error_limited (self, NM_NETLINK_MONITOR_ERROR_BAD_ALLOC,
_("error processing netlink message: %s"),
nl_geterror (ENOMEM));
return;
}
/* Ensure it's a link object */
if (nl_object_match_filter (obj, OBJ_CAST (filter)) == 0) {
rtnl_link_put (filter);
return;
}
link_obj = (struct rtnl_link *) obj;
flags = rtnl_link_get_flags (link_obj);
ifidx = rtnl_link_get_ifindex (link_obj);
nm_log_dbg (LOGD_HW, "netlink link message: iface idx %d flags 0x%X", ifidx, flags);
/* IFF_LOWER_UP is the indicator of carrier status since kernel commit
* b00055aacdb172c05067612278ba27265fcd05ce in 2.6.17.
*/
if (flags & IFF_LOWER_UP)
g_signal_emit (self, signals[CARRIER_ON], 0, ifidx);
else
g_signal_emit (self, signals[CARRIER_OFF], 0, ifidx);
rtnl_link_put (filter);
}
