genetlink: add and use genl_set_err()
Add a static inline to generic netlink to wrap netlink_set_err()
to make it easier to use here - use it in openvswitch (the only
generic netlink user of netlink_set_err()).
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index d8a8b1f..11ac77f 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -351,5 +351,19 @@
return nlmsg_new(genlmsg_total_size(payload), flags);
}
+/**
+ * genl_set_err - report error to genetlink broadcast listeners
+ * @net: the network namespace to report the error to
+ * @portid: the PORTID of a process that we want to skip (if any)
+ * @group: the broadcast group that will notice the error
+ * @code: error code, must be negative (as usual in kernelspace)
+ *
+ * This function returns the number of broadcast listeners that have set the
+ * NETLINK_RECV_NO_ENOBUFS socket option.
+ */
+static inline int genl_set_err(struct net *net, u32 portid, u32 group, int code)
+{
+ return netlink_set_err(net->genl_sock, portid, group, code);
+}
#endif /* __NET_GENERIC_NETLINK_H */