[PATCH v5 14/19] test: dm: eth: Add ip6_addr_in_subnet test

[Viacheslav Mitrofanov]

Add a test if two address are in the same subnet. Use in sandbox

Signed-off-by: Viacheslav Mitrofanov <v.v.mitrofanov at yadro.com>
Reviewed-by: Ramon Fried <rfried.dev at gmail.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
---
 test/dm/eth.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/test/dm/eth.c b/test/dm/eth.c
index 04302cd74a..9a055cbb16 100644
--- a/test/dm/eth.c
+++ b/test/dm/eth.c
@@ -105,6 +105,31 @@ static int dm_test_csum_ipv6_magic(struct unit_test_state *uts)
 	return 0;
 }
 DM_TEST(dm_test_csum_ipv6_magic, 0);
+
+static int dm_test_ip6_addr_in_subnet(struct unit_test_state *uts)
+{
+	struct in6_addr our = {.s6_addr32[0] = 0x000080fe,
+				 .s6_addr32[1] = 0x00000000,
+				 .s6_addr32[2] = 0xffe9f242,
+				 .s6_addr32[3] = 0xe8f66dfe};
+	struct in6_addr neigh1 = {.s6_addr32[0] = 0x000080fe,
+				 .s6_addr32[1] = 0x00000000,
+				 .s6_addr32[2] = 0xffd5b372,
+				 .s6_addr32[3] = 0x3ef692fe};
+	struct in6_addr neigh2 = {.s6_addr32[0] = 0x60480120,
+				 .s6_addr32[1] = 0x00006048,
+				 .s6_addr32[2] = 0x00000000,
+				 .s6_addr32[3] = 0x00008888};
+
+	/* in */
+	ut_assert(ip6_addr_in_subnet(&our, &neigh1, 64));
+	/* outside */
+	ut_assert(!ip6_addr_in_subnet(&our, &neigh2, 64));
+	ut_assert(!ip6_addr_in_subnet(&our, &neigh1, 128));
+
+	return 0;
+}
+DM_TEST(dm_test_ip6_addr_in_subnet, 0);
 #endif
 
 static int dm_test_eth(struct unit_test_state *uts)
-- 
2.25.1