[PATCH 14/27] netlink: add basic attribute parser of rtgenmsg of NETLINK_ROUTE

[JingPiao Chen]

* rtnl_nsid.c: Include "nlattr.h" and "xlat/rtnl_nsid_attrs.h".
(decode_rtgenmsg): Call decode_nlattr.
* xlat/rtnl_nsid_attrs.in

Co-authored-by: Fabien Siron <fabien.siron at epita.fr>
---
 rtnl_nsid.c             | 10 ++++++++++
 xlat/rtnl_nsid_attrs.in |  5 +++++
 2 files changed, 15 insertions(+)
 create mode 100644 xlat/rtnl_nsid_attrs.in

diff --git a/rtnl_nsid.c b/rtnl_nsid.c
index de28788..e3fe18b 100644
--- a/rtnl_nsid.c
+++ b/rtnl_nsid.c
@@ -29,15 +29,25 @@
 
 #include "defs.h"
 #include "netlink_route.h"
+#include "nlattr.h"
 #include "print_fields.h"
 
 #include "netlink.h"
 #include <linux/rtnetlink.h>
 
+#include "xlat/rtnl_nsid_attrs.h"
+
 DECL_NETLINK_ROUTE_DECODER(decode_rtgenmsg)
 {
 	struct rtgenmsg rtgenmsg = { .rtgen_family = family };
 
 	PRINT_FIELD_XVAL("{", rtgenmsg, rtgen_family, addrfams, "AF_???");
 	tprints("}");
+
+	const size_t offset = NLMSG_ALIGN(sizeof(rtgenmsg));
+	if (len > offset) {
+		tprints(", ");
+		decode_nlattr(tcp, addr + offset, len - offset,
+			      rtnl_nsid_attrs, "NETNSA_???", NULL, 0, NULL);
+	}
 }
diff --git a/xlat/rtnl_nsid_attrs.in b/xlat/rtnl_nsid_attrs.in
new file mode 100644
index 0000000..f5b01bf
--- /dev/null
+++ b/xlat/rtnl_nsid_attrs.in
@@ -0,0 +1,5 @@
+NETNSA_NSID_NOT_ASSIGNED	-1
+NETNSA_NONE			0
+NETNSA_NSID			1
+NETNSA_PID			2
+NETNSA_FD			3
-- 
2.7.4