Test checksum computation. csum_ipv6_magic() uses in upper layer
protocols as TCP/UDP/ICMPv6/etc to calculate payload checksum.
Signed-off-by: Viacheslav Mitrofanov <v.v.mitrofa...@yadro.com>
---
test/dm/eth.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/test/dm/eth.c b/test/dm/eth.c
index f5c55099ef..5d19f407c6 100644
--- a/test/dm/eth.c
+++ b/test/dm/eth.c
@@ -76,6 +76,35 @@ static int dm_test_string_to_ip6(struct unit_test_state *uts)
}
DM_TEST(dm_test_string_to_ip6, 0);
+static int dm_test_csum_ipv6_magic(struct unit_test_state *uts)
+{
+ unsigned short csum = 0xbeef;
+ /* Predefined correct parameters */
+ unsigned short correct_csum = 0xd8ac;
+ struct in6_addr saddr = {.s6_addr32[0] = 0x000080fe,
+ .s6_addr32[1] = 0x00000000,
+ .s6_addr32[2] = 0xffe9f242,
+ .s6_addr32[3] = 0xe8f66dfe};
+ struct in6_addr daddr = {.s6_addr32[0] = 0x000080fe,
+ .s6_addr32[1] = 0x00000000,
+ .s6_addr32[2] = 0xffd5b372,
+ .s6_addr32[3] = 0x3ef692fe};
+ u16 len = 1460;
+ unsigned short proto = 17;
+ unsigned int head_csum = 0x91f0;
+
+ csum = csum_ipv6_magic(&saddr, &daddr, len, proto, head_csum);
+ ut_asserteq(csum, correct_csum);
+
+ /* Broke a parameter */
+ proto--;
+ csum = csum_ipv6_magic(&saddr, &daddr, len, proto, head_csum);
+ ut_assert(csum != correct_csum);
+
+ return 0;
+}
+DM_TEST(dm_test_csum_ipv6_magic, 0);
+
static int dm_test_eth(struct unit_test_state *uts)
{
net_ping_ip = string_to_ip("1.1.2.2");
--
2.25.1
