genetlink: add function genl_has_listeners()
This function is the counterpart of the function netlink_has_listeners().
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index 93695f0..af10c2c 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -394,4 +394,12 @@
return netlink_set_err(net->genl_sock, portid, group, code);
}
+static inline int genl_has_listeners(struct genl_family *family,
+ struct sock *sk, unsigned int group)
+{
+ if (WARN_ON_ONCE(group >= family->n_mcgrps))
+ return -EINVAL;
+ group = family->mcgrp_offset + group;
+ return netlink_has_listeners(sk, group);
+}
#endif /* __NET_GENERIC_NETLINK_H */