lwip/test/unit/ip6/test_ip6.c
Erik Ekman 264a5a3e97 Rename IP and Ethernet equality checkers from _cmp to _eq
Functions ending in cmp are expected to return 0 on equality but these
return non-zero.

eth_addr_cmp -> eth_addr_eq

ip_addr_cmp -> ip_addr_eq
ip4_addr_cmp -> ip4_addr_eq
ip6_addr_cmp -> ip6_addr_eq

ip_addr_netcmp -> ip_addr_net_eq
ip4_addr_netcmp -> ip4_addr_net_eq
ip6_addr_netcmp -> ip6_addr_net_eq

ip_addr_cmp_zoneless -> ip_addr_zoneless_eq
ip6_addr_cmp_zoneless -> ip6_addr_zoneless_eq

ip6_addr_cmp_zone -> ip6_addr_zone_eq
ip6_addr_netcmp_zoneless -> ip6_addr_net_zoneless_eq
ip6_addr_nethostcmp -> ip6_addr_nethost_eq
ip6_addr_cmp_packed -> ip6_addr_packed_eq
ip6_addr_cmp_solicitednode -> ip6_addr_solicitednode_eq

All call sites have been changed, and fallback macros have been added to not
break external users.
2020-07-07 18:51:45 +02:00

464 lines
14 KiB
C

#include "test_ip6.h"
#include "lwip/ethip6.h"
#include "lwip/ip6.h"
#include "lwip/icmp6.h"
#include "lwip/inet_chksum.h"
#include "lwip/nd6.h"
#include "lwip/stats.h"
#include "lwip/prot/ethernet.h"
#include "lwip/prot/ip.h"
#include "lwip/prot/ip6.h"
#include "lwip/tcpip.h"
#if LWIP_IPV6 /* allow to build the unit tests without IPv6 support */
static struct netif test_netif6;
static int linkoutput_ctr;
static int linkoutput_byte_ctr;
static err_t
default_netif_linkoutput(struct netif *netif, struct pbuf *p)
{
fail_unless(netif == &test_netif6);
fail_unless(p != NULL);
linkoutput_ctr++;
linkoutput_byte_ctr += p->tot_len;
return ERR_OK;
}
static err_t
default_netif_init(struct netif *netif)
{
fail_unless(netif != NULL);
netif->linkoutput = default_netif_linkoutput;
netif->output_ip6 = ethip6_output;
netif->mtu = 1500;
netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHERNET | NETIF_FLAG_MLD6;
netif->hwaddr_len = ETH_HWADDR_LEN;
return ERR_OK;
}
static void
default_netif_add(void)
{
struct netif *n;
fail_unless(netif_default == NULL);
n = netif_add_noaddr(&test_netif6, NULL, default_netif_init, NULL);
fail_unless(n == &test_netif6);
netif_set_default(&test_netif6);
}
static void
default_netif_remove(void)
{
fail_unless(netif_default == &test_netif6);
netif_remove(&test_netif6);
}
static void
ip6_test_handle_timers(int count)
{
int i;
for (i = 0; i < count; i++) {
nd6_tmr();
}
}
/* Setups/teardown functions */
static void
ip6_setup(void)
{
default_netif_add();
lwip_check_ensure_no_alloc(SKIP_POOL(MEMP_SYS_TIMEOUT));
}
static void
ip6_teardown(void)
{
if (netif_list->loop_first != NULL) {
pbuf_free(netif_list->loop_first);
netif_list->loop_first = NULL;
}
netif_list->loop_last = NULL;
/* poll until all memory is released... */
tcpip_thread_poll_one();
default_netif_remove();
lwip_check_ensure_no_alloc(SKIP_POOL(MEMP_SYS_TIMEOUT));
}
/* Test functions */
static void
test_ip6_ll_addr_iter(int expected_ctr1, int expected_ctr2)
{
fail_unless(linkoutput_ctr == 0);
/* test that nothing is sent with link uo but netif down */
netif_set_link_up(&test_netif6);
ip6_test_handle_timers(500);
fail_unless(linkoutput_ctr == 0);
netif_set_link_down(&test_netif6);
fail_unless(linkoutput_ctr == 0);
/* test that nothing is sent with link down but netif up */
netif_set_up(&test_netif6);
ip6_test_handle_timers(500);
fail_unless(linkoutput_ctr == 0);
netif_set_down(&test_netif6);
fail_unless(linkoutput_ctr == 0);
/* test what is sent with link up + netif up */
netif_set_link_up(&test_netif6);
netif_set_up(&test_netif6);
ip6_test_handle_timers(500);
fail_unless(linkoutput_ctr == expected_ctr1);
netif_set_down(&test_netif6);
netif_set_link_down(&test_netif6);
fail_unless(linkoutput_ctr == expected_ctr1);
linkoutput_ctr = 0;
netif_set_up(&test_netif6);
netif_set_link_up(&test_netif6);
ip6_test_handle_timers(500);
fail_unless(linkoutput_ctr == expected_ctr2);
netif_set_link_down(&test_netif6);
netif_set_down(&test_netif6);
fail_unless(linkoutput_ctr == expected_ctr2);
linkoutput_ctr = 0;
}
START_TEST(test_ip6_ll_addr)
{
LWIP_UNUSED_ARG(_i);
/* test without link-local address */
test_ip6_ll_addr_iter(0, 0);
/* test with link-local address */
netif_create_ip6_linklocal_address(&test_netif6, 1);
test_ip6_ll_addr_iter(3 + LWIP_IPV6_DUP_DETECT_ATTEMPTS + LWIP_IPV6_MLD, 3);
}
END_TEST
START_TEST(test_ip6_aton_ipv4mapped)
{
int ret;
ip_addr_t addr;
ip6_addr_t addr6;
const ip_addr_t addr_expected = IPADDR6_INIT_HOST(0, 0, 0xFFFF, 0xD4CC65D2);
const char *full_ipv6_addr = "0:0:0:0:0:FFFF:D4CC:65D2";
const char *shortened_ipv6_addr = "::FFFF:D4CC:65D2";
const char *full_ipv4_mapped_addr = "0:0:0:0:0:FFFF:212.204.101.210";
const char *shortened_ipv4_mapped_addr = "::FFFF:212.204.101.210";
const char *bogus_ipv4_mapped_addr = "::FFFF:212.204.101.2101";
LWIP_UNUSED_ARG(_i);
/* check IPv6 representation */
memset(&addr6, 0, sizeof(addr6));
ret = ip6addr_aton(full_ipv6_addr, &addr6);
fail_unless(ret == 1);
fail_unless(memcmp(&addr6, &addr_expected, 16) == 0);
memset(&addr, 0, sizeof(addr));
ret = ipaddr_aton(full_ipv6_addr, &addr);
fail_unless(ret == 1);
fail_unless(memcmp(&addr, &addr_expected, 16) == 0);
/* check shortened IPv6 representation */
memset(&addr6, 0, sizeof(addr6));
ret = ip6addr_aton(shortened_ipv6_addr, &addr6);
fail_unless(ret == 1);
fail_unless(memcmp(&addr6, &addr_expected, 16) == 0);
memset(&addr, 0, sizeof(addr));
ret = ipaddr_aton(shortened_ipv6_addr, &addr);
fail_unless(ret == 1);
fail_unless(memcmp(&addr, &addr_expected, 16) == 0);
/* checked shortened mixed representation */
memset(&addr6, 0, sizeof(addr6));
ret = ip6addr_aton(shortened_ipv4_mapped_addr, &addr6);
fail_unless(ret == 1);
fail_unless(memcmp(&addr6, &addr_expected, 16) == 0);
memset(&addr, 0, sizeof(addr));
ret = ipaddr_aton(shortened_ipv4_mapped_addr, &addr);
fail_unless(ret == 1);
fail_unless(memcmp(&addr, &addr_expected, 16) == 0);
/* checked mixed representation */
memset(&addr6, 0, sizeof(addr6));
ret = ip6addr_aton(full_ipv4_mapped_addr, &addr6);
fail_unless(ret == 1);
fail_unless(memcmp(&addr6, &addr_expected, 16) == 0);
memset(&addr, 0, sizeof(addr));
ret = ipaddr_aton(full_ipv4_mapped_addr, &addr);
fail_unless(ret == 1);
fail_unless(memcmp(&addr, &addr_expected, 16) == 0);
/* checked bogus mixed representation */
memset(&addr6, 0, sizeof(addr6));
ret = ip6addr_aton(bogus_ipv4_mapped_addr, &addr6);
fail_unless(ret == 0);
memset(&addr, 0, sizeof(addr));
ret = ipaddr_aton(bogus_ipv4_mapped_addr, &addr);
fail_unless(ret == 0);
}
END_TEST
START_TEST(test_ip6_ntoa_ipv4mapped)
{
const ip_addr_t addr = IPADDR6_INIT_HOST(0, 0, 0xFFFF, 0xD4CC65D2);
char buf[128];
char *str;
LWIP_UNUSED_ARG(_i);
str = ip6addr_ntoa_r(ip_2_ip6(&addr), buf, sizeof(buf));
fail_unless(str == buf);
fail_unless(!strcmp(str, "::FFFF:212.204.101.210"));
}
END_TEST
struct test_addr_and_str {
ip_addr_t addr;
const char *str;
};
START_TEST(test_ip6_ntoa)
{
struct test_addr_and_str tests[] = {
{IPADDR6_INIT_HOST(0xfe800000, 0x00000000, 0xb2a1a2ff, 0xfea3a4a5), "FE80::B2A1:A2FF:FEA3:A4A5"}, /* test shortened zeros */
{IPADDR6_INIT_HOST(0xfe800000, 0xff000000, 0xb2a1a2ff, 0xfea3a4a5), "FE80:0:FF00:0:B2A1:A2FF:FEA3:A4A5"}, /* don't omit single zero blocks */
{IPADDR6_INIT_HOST(0xfe800000, 0xff000000, 0xb2000000, 0x0000a4a5), "FE80:0:FF00:0:B200::A4A5"}, /* omit longest zero block */
};
char buf[128];
char *str;
size_t i;
LWIP_UNUSED_ARG(_i);
for (i = 0; i < LWIP_ARRAYSIZE(tests); i++) {
str = ip6addr_ntoa_r(ip_2_ip6(&tests[i].addr), buf, sizeof(buf));
fail_unless(str == buf);
fail_unless(!strcmp(str, tests[i].str));
}
}
END_TEST
START_TEST(test_ip6_lladdr)
{
u8_t zeros[128];
const u8_t test_mac_addr[6] = {0xb0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5};
const u32_t expected_ip6_addr_1[4] = {PP_HTONL(0xfe800000), 0, PP_HTONL(0xb2a1a2ff), PP_HTONL(0xfea3a4a5)};
const u32_t expected_ip6_addr_2[4] = {PP_HTONL(0xfe800000), 0, PP_HTONL(0x0000b0a1), PP_HTONL(0xa2a3a4a5)};
LWIP_UNUSED_ARG(_i);
memset(zeros, 0, sizeof(zeros));
fail_unless(test_netif6.hwaddr_len == 6);
fail_unless(!memcmp(test_netif6.hwaddr, zeros, 6));
fail_unless(test_netif6.ip6_addr_state[0] == 0);
fail_unless(!memcmp(netif_ip6_addr(&test_netif6, 0), zeros, sizeof(ip6_addr_t)));
/* set specific mac addr */
memcpy(test_netif6.hwaddr, test_mac_addr, 6);
/* create link-local addr based on mac (EUI-48) */
netif_create_ip6_linklocal_address(&test_netif6, 1);
fail_unless(IP_IS_V6(&test_netif6.ip6_addr[0]));
fail_unless(!memcmp(&netif_ip6_addr(&test_netif6, 0)->addr, expected_ip6_addr_1, 16));
#if LWIP_IPV6_SCOPES
fail_unless(netif_ip6_addr(&test_netif6, 0)->zone == (test_netif6.num + 1));
#endif
/* reset address */
memset(&test_netif6.ip6_addr[0], 0, sizeof(ip6_addr_t));
test_netif6.ip6_addr_state[0] = 0;
/* create link-local addr based interface ID */
netif_create_ip6_linklocal_address(&test_netif6, 0);
fail_unless(IP_IS_V6(&test_netif6.ip6_addr[0]));
fail_unless(!memcmp(&netif_ip6_addr(&test_netif6, 0)->addr, expected_ip6_addr_2, 16));
#if LWIP_IPV6_SCOPES
fail_unless(netif_ip6_addr(&test_netif6, 0)->zone == (test_netif6.num + 1));
#endif
/* reset address */
memset(&test_netif6.ip6_addr[0], 0, sizeof(ip6_addr_t));
test_netif6.ip6_addr_state[0] = 0;
/* reset mac address */
memset(&test_netif6.hwaddr, 0, sizeof(test_netif6.hwaddr));
}
END_TEST
static struct pbuf *cloned_pbuf = NULL;
static err_t clone_output(struct netif *netif, struct pbuf *p, const ip6_addr_t *addr) {
LWIP_UNUSED_ARG(netif);
LWIP_UNUSED_ARG(addr);
cloned_pbuf = pbuf_clone(PBUF_RAW, PBUF_RAM, p);
return ERR_OK;
}
/* Reproduces bug #58553 */
START_TEST(test_ip6_dest_unreachable_chained_pbuf)
{
ip_addr_t my_addr = IPADDR6_INIT_HOST(0x20010db8, 0x0, 0x0, 0x1);
ip_addr_t peer_addr = IPADDR6_INIT_HOST(0x20010db8, 0x0, 0x0, 0x4);
/* Create chained pbuf with UDP data that will get destination unreachable */
u8_t udp_hdr[] = {
0x60, 0x00, 0x27, 0x03, 0x00, 0x2d, 0x11, 0x40,
0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x01, 0xff, 0x03, 0xff, 0x00, 0x2d, 0x00, 0x00,
};
struct pbuf *header = pbuf_alloc(PBUF_RAW, sizeof(udp_hdr), PBUF_ROM);
u8_t udp_payload[] = "abcdefghijklmnopqrstuvwxyz0123456789";
struct pbuf *data = pbuf_alloc(PBUF_RAW, sizeof(udp_payload), PBUF_ROM);
u8_t *icmpptr;
struct ip6_hdr *outhdr;
struct icmp6_hdr *icmp6hdr;
fail_unless(header);
header->payload = udp_hdr;
fail_unless(data);
data->payload = udp_payload;
pbuf_cat(header, data);
data = NULL;
/* Configure and enable local address */
netif_set_up(&test_netif6);
netif_ip6_addr_set(&test_netif6, 0, ip_2_ip6(&my_addr));
netif_ip6_addr_set_state(&test_netif6, 0, IP6_ADDR_VALID);
test_netif6.output_ip6 = clone_output;
/* Process packet and send ICMPv6 reply for unreachable UDP port */
ip6_input(header, &test_netif6);
header = NULL;
/* Verify ICMP reply packet contents */
fail_unless(cloned_pbuf);
fail_unless(cloned_pbuf->len == IP6_HLEN + ICMP6_HLEN + sizeof(udp_hdr) + sizeof(udp_payload));
outhdr = (struct ip6_hdr*) cloned_pbuf->payload;
fail_unless(ip6_addr_packed_eq(ip_2_ip6(&my_addr), &outhdr->src, IP6_NO_ZONE));
fail_unless(ip6_addr_packed_eq(ip_2_ip6(&peer_addr), &outhdr->dest, IP6_NO_ZONE));
icmpptr = &((u8_t*)cloned_pbuf->payload)[IP6_HLEN];
icmp6hdr = (struct icmp6_hdr*) icmpptr;
fail_unless(icmp6hdr->type == ICMP6_TYPE_DUR);
fail_unless(icmp6hdr->code == ICMP6_DUR_PORT);
fail_unless(icmp6hdr->data == lwip_htonl(0));
icmpptr += ICMP6_HLEN;
fail_unless(memcmp(icmpptr, udp_hdr, sizeof(udp_hdr)) == 0, "mismatch in copied ip6/udp header");
icmpptr += sizeof(udp_hdr);
fail_unless(memcmp(icmpptr, udp_payload, sizeof(udp_payload)) == 0, "mismatch in copied udp payload");
pbuf_free(cloned_pbuf);
}
END_TEST
/* Reproduces bug #57374 */
START_TEST(test_ip6_frag_pbuf_len_assert)
{
ip_addr_t my_addr = IPADDR6_INIT_HOST(0x20010db8, 0x0, 0x0, 0x1);
ip_addr_t peer_addr = IPADDR6_INIT_HOST(0x20010db8, 0x0, 0x0, 0x4);
struct pbuf *payload, *hdr;
err_t err;
int i;
/* Configure and enable local address */
test_netif6.mtu = 1500;
netif_set_up(&test_netif6);
netif_ip6_addr_set(&test_netif6, 0, ip_2_ip6(&my_addr));
netif_ip6_addr_set_state(&test_netif6, 0, IP6_ADDR_VALID);
/* Create packet with lots of small pbufs around mtu limit */
payload = pbuf_alloc(PBUF_RAW, 1400, PBUF_POOL);
fail_unless(payload != NULL);
for (i = 0; i < 16; i++) {
struct pbuf *p = pbuf_alloc(PBUF_RAW, 32, PBUF_RAM);
fail_unless(p != NULL);
pbuf_cat(payload, p);
}
/* Prefix with header like UDP would */
hdr = pbuf_alloc(PBUF_IP, 8, PBUF_RAM);
fail_unless(hdr != NULL);
pbuf_chain(hdr, payload);
/* Send it and don't crash while fragmenting */
err = ip6_output_if_src(hdr, ip_2_ip6(&my_addr), ip_2_ip6(&peer_addr), 15, 0, IP_PROTO_UDP, &test_netif6);
fail_unless(err == ERR_OK);
pbuf_free(hdr);
pbuf_free(payload);
}
END_TEST
static err_t direct_output(struct netif *netif, struct pbuf *p, const ip6_addr_t *addr) {
LWIP_UNUSED_ARG(addr);
return netif->linkoutput(netif, p);
}
START_TEST(test_ip6_frag)
{
ip_addr_t my_addr = IPADDR6_INIT_HOST(0x20010db8, 0x0, 0x0, 0x1);
ip_addr_t peer_addr = IPADDR6_INIT_HOST(0x20010db8, 0x0, 0x0, 0x4);
struct pbuf *data;
err_t err;
/* Configure and enable local address */
test_netif6.mtu = 1500;
netif_set_up(&test_netif6);
netif_ip6_addr_set(&test_netif6, 0, ip_2_ip6(&my_addr));
netif_ip6_addr_set_state(&test_netif6, 0, IP6_ADDR_VALID);
test_netif6.output_ip6 = direct_output;
/* Reset counters after multicast traffic */
linkoutput_ctr = 0;
linkoutput_byte_ctr = 0;
/* Verify that 8000 byte payload is split into six packets */
data = pbuf_alloc(PBUF_IP, 8000, PBUF_RAM);
fail_unless(data != NULL);
err = ip6_output_if_src(data, ip_2_ip6(&my_addr), ip_2_ip6(&peer_addr),
15, 0, IP_PROTO_UDP, &test_netif6);
fail_unless(err == ERR_OK);
fail_unless(linkoutput_ctr == 6);
fail_unless(linkoutput_byte_ctr == (8000 + (6 * (IP6_HLEN + IP6_FRAG_HLEN))));
pbuf_free(data);
}
END_TEST
/** Create the suite including all tests for this module */
Suite *
ip6_suite(void)
{
testfunc tests[] = {
TESTFUNC(test_ip6_ll_addr),
TESTFUNC(test_ip6_aton_ipv4mapped),
TESTFUNC(test_ip6_ntoa_ipv4mapped),
TESTFUNC(test_ip6_ntoa),
TESTFUNC(test_ip6_lladdr),
TESTFUNC(test_ip6_dest_unreachable_chained_pbuf),
TESTFUNC(test_ip6_frag_pbuf_len_assert),
TESTFUNC(test_ip6_frag)
};
return create_suite("IPv6", tests, sizeof(tests)/sizeof(testfunc), ip6_setup, ip6_teardown);
}
#else /* LWIP_IPV6 */
/* allow to build the unit tests without IPv6 support */
START_TEST(test_ip6_dummy)
{
LWIP_UNUSED_ARG(_i);
}
END_TEST
Suite *
ip6_suite(void)
{
testfunc tests[] = {
TESTFUNC(test_ip6_dummy),
};
return create_suite("IPv6", tests, sizeof(tests)/sizeof(testfunc), NULL, NULL);
}
#endif /* LWIP_IPV6 */