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.mitrofanov@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");