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test: dm: eth: Add csum_ipv6_magic test

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Test checksum computation. csum_ipv6_magic() uses in upper layer
protocols as TCP/UDP/ICMPv6/etc to calculate payload checksum.

Series-changes: 3
- Fixed style problems

Signed-off-by: Viacheslav Mitrofanov <v.v.mitrofanov@yadro.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Viacheslav Mitrofanov 2022-12-02 12:18:10 +03:00 committed by Tom Rini
parent 184ded4bec
commit d9f5c41e9a
1 changed files with 29 additions and 0 deletions
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29
test/dm/eth.c
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@ -75,6 +75,35 @@ static int dm_test_string_to_ip6(struct unit_test_state *uts)
return 0;
}
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);
#endif
static int dm_test_eth(struct unit_test_state *uts)