[Buildroot] [RFC PATCH v2 2/3] lapi: Create if_addr.h and reuse it in rtnetlink.h

[Petr Vorel]

There will be fix in next commit for missing IFA_F_NOPREFIXROUTE which
requires creating lapi/if_addr.h. Thus move IFA_FLAGS to lapi/if_addr.h,
as it belongs there and reuse lapi/if_addr.h in lapi/rtnetlink.h just
like <linux/rtnetlink.h> includes <linux/if_addr.h>.

Signed-off-by: Petr Vorel <petr.vorel at gmail.com>
---
 include/lapi/if_addr.h   | 16 ++++++++++++++++
 include/lapi/rtnetlink.h |  5 +----
 2 files changed, 17 insertions(+), 4 deletions(-)
 create mode 100644 include/lapi/if_addr.h

diff --git a/include/lapi/if_addr.h b/include/lapi/if_addr.h
new file mode 100644
index 000000000..4e50a0a4e
--- /dev/null
+++ b/include/lapi/if_addr.h
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2021 Petr Vorel <petr.vorel at gmail.com>
+ */
+
+#ifndef LAPI_IF_ADDR_H__
+#define LAPI_IF_ADDR_H__
+
+#include <linux/if_addr.h>
+
+#ifndef IFA_FLAGS
+# define IFA_FLAGS 8
+#endif
+
+
+#endif /* LAPI_IF_ADDR_H__ */
diff --git a/include/lapi/rtnetlink.h b/include/lapi/rtnetlink.h
index 04e9ad51a..089bf1a0d 100644
--- a/include/lapi/rtnetlink.h
+++ b/include/lapi/rtnetlink.h
@@ -5,9 +5,6 @@
 # define LAPI_RTNETLINK_H__
 
 #include <linux/rtnetlink.h>
-
-#ifndef IFA_FLAGS
-# define IFA_FLAGS 8
-#endif
+#include "lapi/if_addr.h"
 
 #endif	/* LAPI_RTNETLINK_H__ */
-- 
2.33.0