[PATCH v4 3/3] test: eth: IPv6 network discovery unit test

[Vyacheslav V. Mitrofanov]

On Fri, 2023-04-21 at 17:08 -0700, emohandesi at linux.microsoft.com
wrote:
> «Внимание! Данное письмо от внешнего адресата!»
> 
> From: Ehsan Mohandesi <emohandesi at linux.microsoft.com>
> 
> Test router advertisement validation and processing functions.
> 
> Signed-off-by: Ehsan Mohandesi <emohandesi at linux.microsoft.com>
> ---
>  test/dm/eth.c | 88
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 88 insertions(+)
> 
> diff --git a/test/dm/eth.c b/test/dm/eth.c
> index ebf01d8..d05d2a9 100644
> --- a/test/dm/eth.c
> +++ b/test/dm/eth.c
> @@ -20,6 +20,7 @@
>  #include <dm/uclass-internal.h>
>  #include <test/test.h>
>  #include <test/ut.h>
> +#include <ndisc.h>
> 
>  #define DM_TEST_ETH_NUM                4
> 
> @@ -607,3 +608,90 @@ static int dm_test_eth_async_ping_reply(struct
> unit_test_state *uts)
>  }
> 
>  DM_TEST(dm_test_eth_async_ping_reply, UT_TESTF_SCAN_FDT);
> +
> +#if IS_ENABLED(CONFIG_IPV6_ROUTER_DISCOVERY)
> +
> +static u8 ip6_ra_buf[] = {0x60, 0xf, 0xc5, 0x4a, 0x0, 0x38, 0x3a,
> 0xff, 0xfe,
> +                         0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6,
> 0x85, 0xe6,
> +                         0x29, 0x77, 0xcb, 0xc8, 0x53, 0xff, 0x2,
> 0x0, 0x0,
> +                         0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
> 0x0, 0x0, 0x0,
> +                         0x1, 0x86, 0x0, 0xdc, 0x90, 0x40, 0x80,
> 0x15, 0x18,
> +                         0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
> 0x3, 0x4,
> +                         0x40, 0xc0, 0x0, 0x0, 0x37, 0xdc, 0x0, 0x0,
> 0x37,
> +                         0x78, 0x0, 0x0, 0x0, 0x0, 0x20, 0x1, 0xca,
> 0xfe, 0xca,
> +                         0xfe, 0xca, 0xfe, 0x0, 0x0, 0x0, 0x0, 0x0,
> 0x0, 0x0,
> +                         0x0, 0x1, 0x1, 0x0, 0x15, 0x5d, 0xe2, 0x8a,
> 0x2};
> +
> +static int dm_test_validate_ra(struct unit_test_state *uts)
> +{
> +       struct ip6_hdr *ip6 = (struct ip6_hdr *)ip6_ra_buf;
> +       struct icmp6hdr *icmp = (struct icmp6hdr *)(ip6 + 1);
> +       __be16 temp = 0;
> +
> +       ut_assert(validate_ra(ip6) == true);
> +
> +       temp = ip6->payload_len;
> +       ip6->payload_len = 15;
> +       ut_assert(validate_ra(ip6) == false);
> +       ip6->payload_len = temp;
> +
> +       temp = ip6->saddr.s6_addr16[0];
> +       ip6->saddr.s6_addr16[0] = 0x2001;
> +       ut_assert(validate_ra(ip6) == false);
> +       ip6->saddr.s6_addr16[0] = temp;
> +
> +       temp = ip6->hop_limit;
> +       ip6->hop_limit = 15;
> +       ut_assert(validate_ra(ip6) == false);
> +       ip6->hop_limit = temp;
> +
> +       temp = icmp->icmp6_code;
> +       icmp->icmp6_code = 15;
> +       ut_assert(validate_ra(ip6) == false);
> +       icmp->icmp6_code = temp;
> +
> +       return 0;
> +}
> +
> +DM_TEST(dm_test_validate_ra, 0);
> +
> +static int dm_test_process_ra(struct unit_test_state *uts)
> +{
> +       int len = sizeof(ip6_ra_buf);
> +       struct ip6_hdr *ip6 = (struct ip6_hdr *)ip6_ra_buf;
> +       struct icmp6hdr *icmp = (struct icmp6hdr *)(ip6 + 1);
> +       struct ra_msg *msg = (struct ra_msg *)icmp;
> +       unsigned char *option = msg->opt;
> +       struct icmp6_ra_prefix_info *prefix =
> +                                       (struct icmp6_ra_prefix_info
> *)option;
> +       __be16 temp = 0;
> +       unsigned char option_len = option[1];
> +
> +       ut_assert(process_ra(ip6, len) == 0);
> +
> +       temp = icmp->icmp6_rt_lifetime;
> +       icmp->icmp6_rt_lifetime = 0;
> +       ut_assert(process_ra(ip6, len) != 0);
> +       icmp->icmp6_rt_lifetime = temp;
> +
> +       ut_assert(process_ra(ip6, 0) != 0);
> +
> +       option[1] = 0;
> +       ut_assert(process_ra(ip6, len) != 0);
> +       option[1] = option_len;
> +
> +       prefix->on_link = false;
> +       ut_assert(process_ra(ip6, len) != 0);
> +       prefix->on_link = true;
> +
> +       temp = prefix->prefix.s6_addr16[0];
> +       prefix->prefix.s6_addr16[0] = 0x80fe;
> +       ut_assert(process_ra(ip6, len) != 0);
> +       prefix->prefix.s6_addr16[0] = temp;
> +
> +       return 0;
> +}
> +
> +DM_TEST(dm_test_process_ra, 0);
> +
> +#endif
> --
> 1.8.3.1
> 
> 
Reviewed-by: Viacheslav Mitrofanov <v.v.mitrofanov at yadro.com>