[PATCH 2/2] tests: check decoding of rtmsg netlink attributes

[JingPiao Chen]

* tests/nlattr_rtmsg.c (LWTUNNEL_ENCAP_NONE,
RTA_ENCAP_TYPE): New macros.
(main): Check decoding of RTA_DST, RTA_OIF, RTA_METRICS,
RTA_MULTIPATH, RTA_CACHEINFO, RTA_MFC_STATS,
RTA_VIA and RTA_ENCAP_TYPE.
---
 tests/nlattr_rtmsg.c | 112 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)

diff --git a/tests/nlattr_rtmsg.c b/tests/nlattr_rtmsg.c
index fd0ccde..a60db62 100644
--- a/tests/nlattr_rtmsg.c
+++ b/tests/nlattr_rtmsg.c
@@ -33,6 +33,9 @@
 #include <linux/ip.h>
 #include <linux/rtnetlink.h>
 
+#define RTA_ENCAP_TYPE 21
+#define LWTUNNEL_ENCAP_NONE 0
+
 static void
 init_rtmsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
 {
@@ -90,6 +93,115 @@ main(void)
 		     4, pattern, 4,
 		     print_quoted_hex(pattern, 4));
 
+	TEST_NLATTR(fd, nlh0, hdrlen,
+		    init_rtmsg, print_rtmsg,
+		    RTA_DST, 4, pattern, 4,
+		    print_quoted_hex(pattern, 4));
+
+	const uint32_t ifindex = ifindex_lo();
+	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
+			   init_rtmsg, print_rtmsg,
+			   RTA_OIF, pattern, ifindex,
+			   printf(IFINDEX_LO_STR));
+
+	static struct nlattr nla = {
+		.nla_type = RTAX_LOCK,
+		.nla_len = sizeof(nla)
+	};
+	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
+			   init_rtmsg, print_rtmsg,
+			   RTA_METRICS, pattern, nla,
+			   printf("{nla_len=%u, nla_type=RTAX_LOCK}",
+				  nla.nla_len));
+	struct rtnexthop nh = {
+		.rtnh_len = sizeof(nh) - 1,
+		.rtnh_flags = RTNH_F_DEAD,
+		.rtnh_hops = 0xab,
+		.rtnh_ifindex = ifindex_lo()
+	};
+	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
+			   init_rtmsg, print_rtmsg,
+			   RTA_MULTIPATH, pattern, nh,
+			   printf("{rtnh_len=%u, rtnh_flags=RTNH_F_DEAD"
+				  ", rtnh_hops=%u"
+				  ", rtnh_ifindex=" IFINDEX_LO_STR "}",
+				  nh.rtnh_len, nh.rtnh_hops));
+
+	char buf[RTNH_ALIGN(sizeof(nh)) + sizeof(nla)];
+	nh.rtnh_len = sizeof(buf);
+	nla.nla_type = RTA_DST;
+	memcpy(buf, &nh, sizeof(nh));
+	memcpy(buf + RTNH_ALIGN(sizeof(nh)), &nla, sizeof(nla));
+	TEST_NLATTR(fd, nlh0, hdrlen,
+		    init_rtmsg, print_rtmsg,
+		    RTA_MULTIPATH, sizeof(buf), buf, sizeof(buf),
+		    printf("{rtnh_len=%u, rtnh_flags=RTNH_F_DEAD"
+			   ", rtnh_hops=%u, rtnh_ifindex=" IFINDEX_LO_STR "}"
+			   ", {nla_len=%u, nla_type=RTA_DST}",
+			   nh.rtnh_len, nh.rtnh_hops, nla.nla_len));
+
+	static const struct rta_cacheinfo ci = {
+		.rta_clntref = 0xabcdefab,
+		.rta_lastuse = 0xbdadaedc,
+		.rta_expires = 0xcdadebad,
+		.rta_error = 0xdaedadeb,
+		.rta_used = 0xedfabdad,
+		.rta_id = 0xfeadbcda,
+		.rta_ts = 0xacdbaded,
+		.rta_tsage = 0xbadeadef
+	};
+	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
+			   init_rtmsg, print_rtmsg,
+			   RTA_CACHEINFO, pattern, ci,
+			   PRINT_FIELD_U("{", ci, rta_clntref);
+			   PRINT_FIELD_U(", ", ci, rta_lastuse);
+			   PRINT_FIELD_U(", ", ci, rta_expires);
+			   PRINT_FIELD_U(", ", ci, rta_error);
+			   PRINT_FIELD_U(", ", ci, rta_used);
+			   PRINT_FIELD_X(", ", ci, rta_id);
+			   PRINT_FIELD_U(", ", ci, rta_ts);
+			   PRINT_FIELD_U(", ", ci, rta_tsage);
+			   printf("}"));
+
+#ifdef HAVE_STRUCT_RTA_MFC_STATS
+	static const struct rta_mfc_stats mfcs = {
+		.mfcs_packets = 0xadcdedfdadefadcd,
+		.mfcs_bytes = 0xbaedadedcdedadbd,
+		.mfcs_wrong_if = 0xcddeabeedaedabfa
+	};
+	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
+			   init_rtmsg, print_rtmsg,
+			   RTA_MFC_STATS, pattern, mfcs,
+			   PRINT_FIELD_U("{", mfcs, mfcs_packets);
+			   PRINT_FIELD_U(", ", mfcs, mfcs_bytes);
+			   PRINT_FIELD_U(", ", mfcs, mfcs_wrong_if);
+			   printf("}"));
+#endif
+
+#ifdef HAVE_STRUCT_RTVIA
+	static const struct rtvia via = {
+		.rtvia_family = AF_INET
+	};
+	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
+			   init_rtmsg, print_rtmsg,
+			   RTA_VIA, pattern, via,
+			   printf("{rtvia_family=AF_INET}"));
+	char rtviabuf[sizeof(struct rtvia) + 4];
+	memcpy(rtviabuf, &via, sizeof(via));
+	memcpy(rtviabuf + sizeof(via), "1234", 4);
+	TEST_NLATTR(fd, nlh0, hdrlen,
+		    init_rtmsg, print_rtmsg,
+		    RTA_VIA, sizeof(rtviabuf), rtviabuf, sizeof(rtviabuf),
+		    printf("{rtvia_family=AF_INET"
+			   ", rtvia_addr=\"\\x31\\x32\\x33\\x34\"}"));
+#endif
+
+	const uint16_t encap_type = LWTUNNEL_ENCAP_NONE;
+	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
+			   init_rtmsg, print_rtmsg,
+			   RTA_ENCAP_TYPE, pattern, encap_type,
+			   printf("LWTUNNEL_ENCAP_NONE"));
+
 	puts("+++ exited with 0 +++");
 	return 0;
 }
-- 
2.7.4