[patch libnl] socket: introduce nl_socket_modify_err_cb

[Jiri Pirko]

This function does the same as nl_socket_modify_cb except for error
callback

Signed-off-by: Jiri Pirko <jpirko at redhat.com>
---
 include/netlink/socket.h |    2 ++
 lib/socket.c             |   15 +++++++++++++++
 2 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/include/netlink/socket.h b/include/netlink/socket.h
index f0062b5..d0f5a6a 100644
--- a/include/netlink/socket.h
+++ b/include/netlink/socket.h
@@ -45,6 +45,8 @@ extern void		nl_socket_set_cb(struct nl_sock *,
 extern int		nl_socket_modify_cb(struct nl_sock *, enum nl_cb_type,
 					    enum nl_cb_kind,
 					    nl_recvmsg_msg_cb_t, void *);
+extern int nl_socket_modify_err_cb(struct nl_sock *, enum nl_cb_kind,
+				   nl_recvmsg_err_cb_t, void *);
 
 extern int		nl_socket_set_buffer_size(struct nl_sock *, int, int);
 extern int		nl_socket_set_passcred(struct nl_sock *, int);
diff --git a/lib/socket.c b/lib/socket.c
index 60120fb..565248f 100644
--- a/lib/socket.c
+++ b/lib/socket.c
@@ -511,6 +511,21 @@ int nl_socket_modify_cb(struct nl_sock *sk, enum nl_cb_type type,
 	return nl_cb_set(sk->s_cb, type, kind, func, arg);
 }
 
+/**
+ * Modify the error callback handler associated with the socket
+ * @arg sk		Netlink socket.
+ * @arg kind		kind of callback
+ * @arg func		callback function
+ * @arg arg		argument to be passed to callback function
+ *
+ * @see nl_cb_err
+ */
+int nl_socket_modify_err_cb(struct nl_sock *sk, enum nl_cb_kind kind,
+			    nl_recvmsg_err_cb_t func, void *arg)
+{
+	return nl_cb_err(sk->s_cb, kind, func, arg);
+}
+
 /** @} */
 
 /**
-- 
1.7.6