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RIOT/tests/net/gnrc_ipv6_nib_6ln/main.c

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/*
* Copyright (C) 2017 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup tests
* @{
*
* @file
* @brief Tests default configuration of GNRC's Network Information Base
*
* @author Martine Lenders <m.lenders@fu-berlin.de>
*
* @}
*/
#include <errno.h>
#include <stdio.h>
#include "cib.h"
#include "common.h"
#include "embUnit.h"
#include "embUnit/embUnit.h"
#include "net/ipv6.h"
#include "net/gnrc.h"
#include "net/gnrc/ipv6/nib.h"
#include "net/gnrc/ipv6/nib/nc.h"
#include "net/gnrc/netif/internal.h"
#include "net/gnrc/sixlowpan/ctx.h"
#include "net/gnrc/sixlowpan/nd.h"
#include "net/ndp.h"
#include "net/sixlowpan/nd.h"
#include "sched.h"
#include "timex.h"
#define _BUFFER_SIZE (196)
#define _ARO_LTIME (4224)
#define _CUR_HL (155)
#define _RTR_LTIME (6612U)
#define _REACH_TIME (1210388825UL)
#define _RETRANS_TIMER (3691140UL)
#define _LOC_GB_PFX_LEN (45U)
#define _REM_GB_PFX_LEN (37U)
#define _PIO_PFX_LTIME (0x8476fedf)
#define _CTX_LTIME (29169U)
#define _ABR_VERSION (4065834664U)
#define _ABR_LIME (5286U)
static const uint8_t _loc_l2[] = { _LL0, _LL1, _LL2, _LL3,
_LL4, _LL5, _LL6, _LL7 };
static const ipv6_addr_t _loc_ll = { {
0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
_LL0 ^ 2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7
} };
static const ipv6_addr_t _loc_gb = { {
0x20, 0x01, 0x2b, 0x2e, 0x43, 0x80, 0x00, 0x00,
_LL0 ^ 2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7
} };
#define _loc_iid _loc_ll.u64[1].u8
static const uint8_t _rem_l2[] = { _LL0, _LL1, _LL2, _LL3,
_LL4, _LL5, _LL6, _LL7 + 1 };
static const ipv6_addr_t _rem_ll = { {
0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
_LL0 ^ 2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 + 1
} };
static const ipv6_addr_t _rem_gb = { {
0x20, 0x01, 0x18, 0xc9, 0xf8, 0x00, 0x00, 0x00,
_LL0 ^ 2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 + 1
} };
#define _rem_iid _rem_ll.u64[1].u8
static const ipv6_addr_t _abr_gb = { {
0x20, 0x01, 0x2b, 0x2e, 0x43, 0x80, 0x00, 0x00,
_LL0 ^ 2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 - 1
} };
static uint8_t _buffer[_BUFFER_SIZE];
static ipv6_hdr_t *ipv6 = (ipv6_hdr_t *)&_buffer[0];
static icmpv6_hdr_t *icmpv6 = (icmpv6_hdr_t *)&_buffer[sizeof(ipv6_hdr_t)];
static inline size_t ceil8(size_t size);
static void _set_up(void)
{
_common_set_up();
gnrc_netif_acquire(_mock_netif);
/* reset some fields not set by the nib interface initializer */
_mock_netif->ipv6.mtu = IPV6_MIN_MTU;
_mock_netif->cur_hl = CONFIG_GNRC_NETIF_DEFAULT_HL;
gnrc_netif_ipv6_addr_remove_internal(_mock_netif, &_loc_gb);
gnrc_netif_release(_mock_netif);
memset(_buffer, 0, sizeof(_buffer));
gnrc_pktbuf_init();
/* remove messages */
while (msg_avail()) {
msg_t msg;
msg_receive(&msg);
}
gnrc_sixlowpan_ctx_reset();
}
static void test_get_next_hop_l2addr__link_local_EHOSTUNREACH(void)
{
gnrc_ipv6_nib_nc_t nce;
TEST_ASSERT_EQUAL_INT(-EHOSTUNREACH,
gnrc_ipv6_nib_get_next_hop_l2addr(&_rem_ll,
NULL,
NULL, &nce));
TEST_ASSERT_EQUAL_INT(0, msg_avail());
TEST_ASSERT(gnrc_pktbuf_is_empty());
}
static void test_get_next_hop_l2addr__ENETUNREACH(void)
{
gnrc_ipv6_nib_nc_t nce;
TEST_ASSERT_EQUAL_INT(-ENETUNREACH,
gnrc_ipv6_nib_get_next_hop_l2addr(&_rem_gb,
NULL, NULL, &nce));
TEST_ASSERT_EQUAL_INT(0, msg_avail());
TEST_ASSERT(gnrc_pktbuf_is_empty());
}
static void test_get_next_hop_l2addr__link_local_static_conf(void)
{
gnrc_ipv6_nib_nc_t nce;
TEST_ASSERT_EQUAL_INT(0, gnrc_ipv6_nib_nc_set(&_rem_ll, _mock_netif->pid,
_rem_l2, sizeof(_rem_l2)));
TEST_ASSERT_EQUAL_INT(0, gnrc_ipv6_nib_get_next_hop_l2addr(&_rem_ll,
_mock_netif,
NULL, &nce));
TEST_ASSERT_MESSAGE((memcmp(&_rem_ll, &nce.ipv6, sizeof(_rem_ll)) == 0),
"_rem_ll != nce.ipv6");
TEST_ASSERT_EQUAL_INT(sizeof(_rem_l2), nce.l2addr_len);
TEST_ASSERT_MESSAGE((memcmp(&_rem_l2, &nce.l2addr, nce.l2addr_len) == 0),
"_rem_l2 != nce.l2addr");
TEST_ASSERT_EQUAL_INT(GNRC_IPV6_NIB_NC_INFO_NUD_STATE_UNMANAGED,
gnrc_ipv6_nib_nc_get_nud_state(&nce));
TEST_ASSERT_EQUAL_INT(_mock_netif->pid, gnrc_ipv6_nib_nc_get_iface(&nce));
TEST_ASSERT(!gnrc_ipv6_nib_nc_is_router(&nce));
TEST_ASSERT_EQUAL_INT(GNRC_IPV6_NIB_NC_INFO_AR_STATE_MANUAL,
gnrc_ipv6_nib_nc_get_ar_state(&nce));
TEST_ASSERT_EQUAL_INT(0, msg_avail());
TEST_ASSERT(gnrc_pktbuf_is_empty());
}
static void test_get_next_hop_l2addr__link_local(void)
{
gnrc_ipv6_nib_nc_t nce;
TEST_ASSERT_EQUAL_INT(0, gnrc_ipv6_nib_get_next_hop_l2addr(&_rem_ll,
_mock_netif,
NULL, &nce));
TEST_ASSERT_MESSAGE((memcmp(&_rem_ll, &nce.ipv6, sizeof(_rem_ll)) == 0),
"_rem_ll != nce.ipv6");
TEST_ASSERT_EQUAL_INT(sizeof(_rem_l2), nce.l2addr_len);
TEST_ASSERT_MESSAGE((memcmp(&_rem_l2, &nce.l2addr, nce.l2addr_len) == 0),
"_rem_l2 != nce.l2addr");
TEST_ASSERT_EQUAL_INT(GNRC_IPV6_NIB_NC_INFO_NUD_STATE_REACHABLE,
gnrc_ipv6_nib_nc_get_nud_state(&nce));
TEST_ASSERT_EQUAL_INT(_mock_netif->pid, gnrc_ipv6_nib_nc_get_iface(&nce));
TEST_ASSERT(!gnrc_ipv6_nib_nc_is_router(&nce));
TEST_ASSERT_EQUAL_INT(GNRC_IPV6_NIB_NC_INFO_AR_STATE_REGISTERED,
gnrc_ipv6_nib_nc_get_ar_state(&nce));
TEST_ASSERT_EQUAL_INT(0, msg_avail());
TEST_ASSERT(gnrc_pktbuf_is_empty());
}
static void test_get_next_hop_l2addr__global_with_default_route(void)
{
gnrc_ipv6_nib_nc_t nce;
/* add _rem_ll as default router */
TEST_ASSERT_EQUAL_INT(0, gnrc_ipv6_nib_ft_add(NULL, 0, &_rem_ll,
_mock_netif->pid, 0));
TEST_ASSERT_EQUAL_INT(0, gnrc_ipv6_nib_get_next_hop_l2addr(&_rem_gb,
NULL, NULL,
&nce));
TEST_ASSERT_EQUAL_INT(0, msg_avail());
TEST_ASSERT(gnrc_pktbuf_is_empty());
}
static void test_handle_pkt__unknown_type(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
ipv6_hdr_set_version(ipv6);
ipv6->hl = NDP_HOP_LIMIT;
memcpy(&ipv6->src, &_loc_ll, sizeof(ipv6->src));
memcpy(&ipv6->dst, &_rem_ll, sizeof(ipv6->dst));
icmpv6->type = ICMPV6_ECHO_REQ;
icmpv6->code = 0;
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6,
sizeof(icmpv6_hdr_t));
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
}
static size_t _set_nbr_sol(const ipv6_addr_t *ipv6_src,
const ipv6_addr_t *ipv6_dst,
uint8_t ipv6_hl, uint8_t nbr_sol_code,
const ipv6_addr_t *nbr_sol_tgt,
const uint8_t *sl2ao_addr, size_t sl2ao_addr_len)
{
size_t icmpv6_len = sizeof(ndp_nbr_sol_t);
ndp_nbr_sol_t *nbr_sol = (ndp_nbr_sol_t *)icmpv6;
ipv6_hdr_set_version(ipv6);
ipv6->hl = ipv6_hl;
memcpy(&ipv6->src, ipv6_src, sizeof(ipv6->src));
memcpy(&ipv6->dst, ipv6_dst, sizeof(ipv6->dst));
nbr_sol->type = ICMPV6_NBR_SOL;
nbr_sol->code = nbr_sol_code;
memcpy(&nbr_sol->tgt, nbr_sol_tgt, sizeof(nbr_sol->tgt));
if ((sl2ao_addr != NULL) && (sl2ao_addr_len > 0)) {
ndp_opt_t *sl2ao = (ndp_opt_t *)&_buffer[sizeof(ipv6_hdr_t) +
sizeof(ndp_nbr_sol_t)];
sl2ao->type = NDP_OPT_SL2A;
sl2ao->len = ceil8(sizeof(ndp_opt_t) + sl2ao_addr_len) / 8;
memcpy(sl2ao + 1, sl2ao_addr, sl2ao_addr_len);
icmpv6_len += ceil8(sizeof(ndp_opt_t) + sl2ao_addr_len);
}
return icmpv6_len;
}
static void test_handle_pkt__nbr_sol__invalid_hl(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_sol(&_rem_ll, &_loc_ll, 194U, 0U,
&_loc_ll, _rem_l2, sizeof(_rem_l2));
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_sol__invalid_code(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_sol(&_rem_ll, &_loc_ll, NDP_HOP_LIMIT, 201U,
&_loc_ll, _rem_l2, sizeof(_rem_l2));
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_sol__invalid_icmpv6_len(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
_set_nbr_sol(&_rem_ll, &_loc_ll, NDP_HOP_LIMIT, 0U, &_loc_ll, _rem_l2,
sizeof(_rem_l2));
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6,
sizeof(ndp_nbr_sol_t) - 1);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_sol__invalid_tgt(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_sol(&_rem_ll, &_loc_ll, NDP_HOP_LIMIT, 0U,
&ipv6_addr_all_routers_site_local, _rem_l2,
sizeof(_rem_l2));
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_sol__invalid_opt_len(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_sol(&_rem_ll, &_loc_ll, NDP_HOP_LIMIT, 0U,
&_loc_ll, _rem_l2, sizeof(_rem_l2));
ndp_opt_t *opt = (ndp_opt_t *)&_buffer[icmpv6_len];
opt->type = NDP_OPT_SL2A;
opt->len = 0U;
icmpv6_len += sizeof(ndp_opt_t);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_sol__invalid_dst(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_sol(&ipv6_addr_unspecified, &_loc_ll,
NDP_HOP_LIMIT, 0U, &_loc_ll, NULL, 0);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_sol__invalid_sl2ao(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_sol(&ipv6_addr_unspecified, &_loc_ll,
NDP_HOP_LIMIT, 0U, &_loc_ll, _rem_l2,
sizeof(_rem_l2));
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_sol__tgt_not_assigned(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_sol(&_rem_ll, &_loc_ll,
NDP_HOP_LIMIT, 0U, &_rem_ll, _rem_l2,
sizeof(_rem_l2));
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_pkt_is_nbr_adv(gnrc_pktsnip_t *pkt, const ipv6_addr_t *dst,
const ipv6_addr_t *tgt)
{
gnrc_netif_hdr_t *netif_hdr;
ipv6_hdr_t *ipv6_hdr;
ndp_nbr_adv_t *nbr_adv;
/* first snip is a netif header to _mock_netif */
TEST_ASSERT_NOT_NULL(pkt);
TEST_ASSERT_EQUAL_INT(GNRC_NETTYPE_NETIF, pkt->type);
TEST_ASSERT(sizeof(gnrc_netif_hdr_t) <= pkt->size);
netif_hdr = pkt->data;
TEST_ASSERT_EQUAL_INT(_mock_netif->pid, netif_hdr->if_pid);
/* second snip is an IPv6 header to dst */
TEST_ASSERT_NOT_NULL(pkt->next);
TEST_ASSERT_EQUAL_INT(GNRC_NETTYPE_IPV6, pkt->next->type);
TEST_ASSERT_EQUAL_INT(sizeof(ipv6_hdr_t), pkt->next->size);
ipv6_hdr = pkt->next->data;
TEST_ASSERT(!ipv6_addr_is_multicast(&ipv6_hdr->dst));
TEST_ASSERT_MESSAGE(ipv6_addr_equal(dst, &ipv6_hdr->dst),
"dst != ipv6_hdr->dst");
TEST_ASSERT_EQUAL_INT(255, ipv6_hdr->hl);
/* third snip is a valid solicited neighbor advertisement to tgt */
TEST_ASSERT_NOT_NULL(pkt->next->next);
TEST_ASSERT_EQUAL_INT(GNRC_NETTYPE_ICMPV6, pkt->next->next->type);
TEST_ASSERT_EQUAL_INT(sizeof(ndp_nbr_adv_t), pkt->next->next->size);
nbr_adv = pkt->next->next->data;
TEST_ASSERT_EQUAL_INT(ICMPV6_NBR_ADV, nbr_adv->type);
TEST_ASSERT_EQUAL_INT(0, nbr_adv->code);
TEST_ASSERT(!ipv6_addr_is_multicast(&nbr_adv->tgt));
TEST_ASSERT_MESSAGE(ipv6_addr_equal(tgt, &nbr_adv->tgt),
"tgt != nbr_adv->tgt");
TEST_ASSERT(nbr_adv->flags & NDP_NBR_ADV_FLAGS_S);
/* no further options */
TEST_ASSERT_NULL(pkt->next->next->next);
}
static void test_handle_pkt__nbr_sol__ll_src(unsigned exp_nud_state,
unsigned exp_ar_state)
{
msg_t msg;
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_sol(&_rem_ll, &_loc_ll,
NDP_HOP_LIMIT, 0U, &_loc_ll, _rem_l2,
sizeof(_rem_l2));
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"Expected neighbor cache entry");
TEST_ASSERT_MESSAGE(ipv6_addr_equal(&_rem_ll, &nce.ipv6),
"_rem_ll != nce->ipv6");
TEST_ASSERT_EQUAL_INT(sizeof(_rem_l2), nce.l2addr_len);
TEST_ASSERT_MESSAGE(memcmp(_rem_l2, nce.l2addr, nce.l2addr_len) == 0,
"_rem_l2 != nce.l2addr");
TEST_ASSERT_EQUAL_INT(exp_nud_state, gnrc_ipv6_nib_nc_get_nud_state(&nce));
TEST_ASSERT(!gnrc_ipv6_nib_nc_is_router(&nce));
TEST_ASSERT_EQUAL_INT(_mock_netif->pid, gnrc_ipv6_nib_nc_get_iface(&nce));
TEST_ASSERT_EQUAL_INT(exp_ar_state, gnrc_ipv6_nib_nc_get_ar_state(&nce));
TEST_ASSERT_EQUAL_INT(1, msg_avail());
msg_receive(&msg);
TEST_ASSERT_EQUAL_INT(GNRC_NETAPI_MSG_TYPE_SND, msg.type);
test_pkt_is_nbr_adv(msg.content.ptr, &_rem_ll, &_loc_ll);
gnrc_pktbuf_release(msg.content.ptr);
TEST_ASSERT(gnrc_pktbuf_is_empty());
}
static void test_handle_pkt__nbr_sol__ll_src_empty_nc(void)
{
test_handle_pkt__nbr_sol__ll_src(GNRC_IPV6_NIB_NC_INFO_NUD_STATE_STALE,
GNRC_IPV6_NIB_NC_INFO_AR_STATE_GC);
}
static void test_handle_pkt__nbr_sol__ll_src_unmanaged_nce(void)
{
test_get_next_hop_l2addr__link_local_static_conf();
/* unmanaged entry stays unmanaged */
test_handle_pkt__nbr_sol__ll_src(GNRC_IPV6_NIB_NC_INFO_NUD_STATE_UNMANAGED,
GNRC_IPV6_NIB_NC_INFO_AR_STATE_MANUAL);
}
static void test_handle_pkt__nbr_sol__ll_src_no_sl2ao(void)
{
msg_t msg;
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_sol(&_rem_ll, &_loc_ll,
NDP_HOP_LIMIT, 0U, &_loc_ll, NULL, 0);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
TEST_ASSERT_EQUAL_INT(1, msg_avail());
msg_receive(&msg);
TEST_ASSERT_EQUAL_INT(GNRC_NETAPI_MSG_TYPE_SND, msg.type);
test_pkt_is_nbr_adv(msg.content.ptr, &_rem_ll, &_loc_ll);
gnrc_pktbuf_release(msg.content.ptr);
TEST_ASSERT(gnrc_pktbuf_is_empty());
}
static size_t _set_nbr_adv(const ipv6_addr_t *ipv6_src,
const ipv6_addr_t *ipv6_dst,
uint8_t ipv6_hl, uint8_t nbr_adv_code,
uint8_t nbr_adv_flags,
const ipv6_addr_t *nbr_adv_tgt,
const uint8_t *tl2ao_addr, size_t tl2ao_addr_len,
eui64_t *aro_eui, uint8_t aro_status)
{
size_t icmpv6_len = sizeof(ndp_nbr_adv_t);
ndp_nbr_adv_t *nbr_adv = (ndp_nbr_adv_t *)icmpv6;
ipv6_hdr_set_version(ipv6);
ipv6->hl = ipv6_hl;
memcpy(&ipv6->src, ipv6_src, sizeof(ipv6->src));
memcpy(&ipv6->dst, ipv6_dst, sizeof(ipv6->dst));
nbr_adv->type = ICMPV6_NBR_ADV;
nbr_adv->code = nbr_adv_code;
nbr_adv->flags = nbr_adv_flags;
memcpy(&nbr_adv->tgt, nbr_adv_tgt, sizeof(nbr_adv->tgt));
if ((tl2ao_addr != NULL) && (tl2ao_addr_len > 0)) {
ndp_opt_t *tl2ao = (ndp_opt_t *)&_buffer[sizeof(ipv6_hdr_t) +
sizeof(ndp_nbr_adv_t)];
tl2ao->type = NDP_OPT_TL2A;
tl2ao->len = ceil8(sizeof(ndp_opt_t) + tl2ao_addr_len) / 8;
memcpy(tl2ao + 1, tl2ao_addr, tl2ao_addr_len);
icmpv6_len += ceil8(sizeof(ndp_opt_t) + tl2ao_addr_len);
}
if (aro_eui) {
sixlowpan_nd_opt_ar_t *aro = (sixlowpan_nd_opt_ar_t *)&_buffer[sizeof(ipv6_hdr_t) +
icmpv6_len];
aro->type = NDP_OPT_AR;
aro->len = SIXLOWPAN_ND_OPT_AR_LEN;
aro->status = aro_status;
aro->ltime = byteorder_htons(_ARO_LTIME);
aro->eui64.uint64 = aro_eui->uint64;
icmpv6_len += sizeof(sixlowpan_nd_opt_ar_t);
}
return icmpv6_len;
}
static void test_handle_pkt__nbr_adv__invalid_hl(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_adv(&_rem_ll, &_loc_ll, 194U, 0U,
NDP_NBR_ADV_FLAGS_S, &_loc_ll, _rem_l2,
sizeof(_rem_l2), NULL, 0U);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_adv__invalid_code(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_adv(&_rem_ll, &_loc_ll, NDP_HOP_LIMIT, 201U,
NDP_NBR_ADV_FLAGS_S, &_loc_ll, _rem_l2,
sizeof(_rem_l2), NULL, 0U);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_adv__invalid_icmpv6_len(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
_set_nbr_adv(&_rem_ll, &_loc_ll, NDP_HOP_LIMIT, 0U, NDP_NBR_ADV_FLAGS_S,
&_loc_ll, _rem_l2,
sizeof(_rem_l2), NULL, 0U);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6,
sizeof(ndp_nbr_adv_t) - 1);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_adv__invalid_tgt(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_adv(&_rem_ll, &_loc_ll, NDP_HOP_LIMIT, 0U,
NDP_NBR_ADV_FLAGS_S,
&ipv6_addr_all_routers_site_local, _rem_l2,
sizeof(_rem_l2), NULL, 0U);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_adv__invalid_flags(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_adv(&_rem_ll, &ipv6_addr_all_nodes_link_local,
NDP_HOP_LIMIT, 0U, NDP_NBR_ADV_FLAGS_S,
&_loc_ll, NULL, 0, NULL, 0U);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_adv__invalid_opt_len(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_adv(&_rem_ll, &_loc_ll, NDP_HOP_LIMIT, 0U,
NDP_NBR_ADV_FLAGS_S, &_loc_ll, _rem_l2,
sizeof(_rem_l2), NULL, 0U);
ndp_opt_t *opt = (ndp_opt_t *)&_buffer[icmpv6_len];
opt->type = NDP_OPT_SL2A;
opt->len = 0U;
icmpv6_len += sizeof(ndp_opt_t);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_adv__unspecified_src(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_adv(&ipv6_addr_unspecified, &_loc_ll,
NDP_HOP_LIMIT, 0U, NDP_NBR_ADV_FLAGS_S,
&_loc_ll, _rem_l2, sizeof(_rem_l2),
NULL, 0U);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
/* TODO: check other views as well */
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_adv__unsolicited(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_nbr_adv(&_rem_ll, &_loc_ll, NDP_HOP_LIMIT, 0U,
NDP_NBR_ADV_FLAGS_S, &_loc_ll,
_rem_l2, sizeof(_rem_l2), NULL, 0U);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__nbr_adv__aro_not_my_eui64(void)
{
size_t icmpv6_len = _set_nbr_adv(&_rem_gb, &_loc_gb, NDP_HOP_LIMIT, 0U, 0U,
&_rem_ll, 0U, 0U, (eui64_t *)&_rem_l2,
SIXLOWPAN_ND_STATUS_SUCCESS);
int idx;
idx = gnrc_netif_ipv6_addr_add_internal(_mock_netif, &_loc_gb, _LOC_GB_PFX_LEN,
GNRC_NETIF_IPV6_ADDRS_FLAGS_STATE_TENTATIVE);
TEST_ASSERT(idx >= 0);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT(ipv6_addr_equal(&_loc_gb, &_mock_netif->ipv6.addrs[idx]));
TEST_ASSERT(_mock_netif->ipv6.addrs_flags[idx] &
GNRC_NETIF_IPV6_ADDRS_FLAGS_STATE_TENTATIVE);
}
static void test_handle_pkt__nbr_adv__aro_duplicate(void)
{
size_t icmpv6_len = _set_nbr_adv(&_rem_gb, &_loc_gb, NDP_HOP_LIMIT, 0U, 0U,
&_rem_ll, NULL, 0U, (eui64_t *)&_loc_l2,
SIXLOWPAN_ND_STATUS_DUP);
int idx;
TEST_ASSERT_EQUAL_INT(0, gnrc_ipv6_nib_nc_set(&_rem_ll, _mock_netif->pid,
_rem_l2, sizeof(_rem_l2)));
idx = gnrc_netif_ipv6_addr_add_internal(_mock_netif, &_loc_gb, _LOC_GB_PFX_LEN,
GNRC_NETIF_IPV6_ADDRS_FLAGS_STATE_TENTATIVE);
TEST_ASSERT(idx >= 0);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT(gnrc_netif_ipv6_addr_idx(_mock_netif, &_loc_gb) < 0);
}
static size_t _set_rtr_sol(const ipv6_addr_t *ipv6_src,
const ipv6_addr_t *ipv6_dst,
uint8_t ipv6_hl, uint8_t rtr_sol_code,
const uint8_t *sl2ao_addr, size_t sl2ao_addr_len)
{
size_t icmpv6_len = sizeof(ndp_rtr_sol_t);
ndp_rtr_sol_t *rtr_sol = (ndp_rtr_sol_t *)icmpv6;
ipv6_hdr_set_version(ipv6);
ipv6->hl = ipv6_hl;
memcpy(&ipv6->src, ipv6_src, sizeof(ipv6->src));
memcpy(&ipv6->dst, ipv6_dst, sizeof(ipv6->dst));
rtr_sol->type = ICMPV6_RTR_SOL;
rtr_sol->code = rtr_sol_code;
if ((sl2ao_addr != NULL) && (sl2ao_addr_len > 0)) {
ndp_opt_t *sl2ao = (ndp_opt_t *)&_buffer[sizeof(ipv6_hdr_t) +
sizeof(ndp_rtr_sol_t)];
sl2ao->type = NDP_OPT_SL2A;
sl2ao->len = ceil8(sizeof(ndp_opt_t) + sl2ao_addr_len) / 8;
memcpy(sl2ao + 1, sl2ao_addr, sl2ao_addr_len);
icmpv6_len += ceil8(sizeof(ndp_opt_t) + sl2ao_addr_len);
}
return icmpv6_len;
}
static void test_handle_pkt__rtr_sol(void)
{
gnrc_ipv6_nib_nc_t nce;
void *state = NULL;
size_t icmpv6_len = _set_rtr_sol(&_rem_ll, &_loc_ll,
NDP_HOP_LIMIT, 0U,
_rem_l2, sizeof(_rem_l2));
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static size_t _set_rtr_adv(const ipv6_addr_t *ipv6_src,
uint8_t ipv6_hl, uint8_t rtr_adv_code,
bool set_rtr_adv_fields,
uint8_t rtr_adv_flags,
const uint8_t *sl2ao_addr, size_t sl2ao_addr_len,
uint16_t mtu,
const ipv6_addr_t *pfx, unsigned pfx_len,
uint8_t pfx_flags,
bool include_pfx_6co,
const ipv6_addr_t *abr, uint32_t abr_version)
{
size_t icmpv6_len = sizeof(ndp_rtr_adv_t);
ndp_rtr_adv_t *rtr_adv = (ndp_rtr_adv_t *)icmpv6;
ipv6_hdr_set_version(ipv6);
ipv6->hl = ipv6_hl;
memcpy(&ipv6->src, ipv6_src, sizeof(ipv6->src));
memcpy(&ipv6->dst, &_loc_ll, sizeof(ipv6->dst));
rtr_adv->type = ICMPV6_RTR_ADV;
rtr_adv->code = rtr_adv_code;
rtr_adv->flags = rtr_adv_flags;
if (set_rtr_adv_fields) {
rtr_adv->cur_hl = _CUR_HL,
rtr_adv->ltime = byteorder_htons(_RTR_LTIME);
rtr_adv->reach_time = byteorder_htonl(_REACH_TIME);
rtr_adv->retrans_timer = byteorder_htonl(_RETRANS_TIMER);
}
if (mtu > 0) {
ndp_opt_mtu_t *mtuo = (ndp_opt_mtu_t *)&_buffer[sizeof(ipv6_hdr_t) +
icmpv6_len];
mtuo->type = NDP_OPT_MTU;
mtuo->len = NDP_OPT_MTU_LEN;
mtuo->mtu = byteorder_htonl(mtu);
icmpv6_len += sizeof(ndp_opt_mtu_t);
}
if (abr != NULL) {
sixlowpan_nd_opt_abr_t *abro = (sixlowpan_nd_opt_abr_t *)&_buffer[sizeof(ipv6_hdr_t) +
icmpv6_len];
abro->type = NDP_OPT_ABR;
abro->len = SIXLOWPAN_ND_OPT_ABR_LEN;
sixlowpan_nd_opt_abr_set_version(abro, abr_version);
abro->ltime = byteorder_htons(_ABR_LIME);
memcpy(&abro->braddr, abr, sizeof(abro->braddr));
icmpv6_len += sizeof(sixlowpan_nd_opt_abr_t);
}
if ((pfx != NULL) && (pfx_len > 0)) {
ndp_opt_pi_t *pio = (ndp_opt_pi_t *)&_buffer[sizeof(ipv6_hdr_t) +
icmpv6_len];
pio->type = NDP_OPT_PI;
pio->len = NDP_OPT_PI_LEN;
pio->prefix_len = pfx_len;
pio->flags = pfx_flags;
pio->valid_ltime = byteorder_htonl(_PIO_PFX_LTIME);
pio->pref_ltime = byteorder_htonl(_PIO_PFX_LTIME);
ipv6_addr_init_prefix(&pio->prefix, pfx, pfx_len);
icmpv6_len += sizeof(ndp_opt_pi_t);
if (include_pfx_6co) {
sixlowpan_nd_opt_6ctx_t *ctx = (sixlowpan_nd_opt_6ctx_t *)&_buffer[sizeof(ipv6_hdr_t) +
icmpv6_len];
ipv6_addr_t *ctx_pfx = (ipv6_addr_t *)(ctx + 1);
ctx->type = NDP_OPT_6CTX;
ctx->len = (pfx_len > 64) ? SIXLOWPAN_ND_OPT_6CTX_LEN_MAX :
SIXLOWPAN_ND_OPT_6CTX_LEN_MIN;
ctx->ctx_len = pfx_len;
ctx->resv_c_cid |= SIXLOWPAN_ND_OPT_6CTX_FLAGS_C;
ctx->ltime = byteorder_htons(_CTX_LTIME);
ipv6_addr_init_prefix(ctx_pfx, pfx, pfx_len);
icmpv6_len += ctx->len * 8U;
}
}
if ((sl2ao_addr != NULL) && (sl2ao_addr_len > 0)) {
ndp_opt_t *sl2ao = (ndp_opt_t *)&_buffer[sizeof(ipv6_hdr_t) +
icmpv6_len];
sl2ao->type = NDP_OPT_SL2A;
sl2ao->len = ceil8(sizeof(ndp_opt_t) + sl2ao_addr_len) / 8;
memcpy(sl2ao + 1, sl2ao_addr, sl2ao_addr_len);
icmpv6_len += ceil8(sizeof(ndp_opt_t) + sl2ao_addr_len);
}
return icmpv6_len;
}
typedef struct {
uint32_t retrans_timer;
uint16_t mtu;
uint8_t addr_count;
uint8_t cur_hl;
} _netif_exp_t;
static uint8_t _netif_addr_count(const gnrc_netif_t *netif)
{
unsigned count = 0U;
for (int i = 0; i < CONFIG_GNRC_NETIF_IPV6_ADDRS_NUMOF; i++) {
if (netif->ipv6.addrs_flags[i] != 0) {
count++;
}
}
return count;
}
static inline void _get_netif_exp(const gnrc_netif_t *netif,
_netif_exp_t *exp)
{
exp->retrans_timer = netif->ipv6.retrans_time;
exp->mtu = netif->ipv6.mtu;
exp->addr_count = _netif_addr_count(netif);
exp->cur_hl = netif->cur_hl;
}
#define TEST_ASSERT_NETIF_UNCHANGED(netif, exp) \
TEST_ASSERT_EQUAL_INT(exp.retrans_timer, netif->ipv6.retrans_time); \
TEST_ASSERT_EQUAL_INT(exp.mtu, netif->ipv6.mtu); \
TEST_ASSERT_EQUAL_INT(exp.addr_count, _netif_addr_count(netif)); \
TEST_ASSERT_EQUAL_INT(exp.cur_hl, netif->cur_hl)
static void test_handle_pkt__rtr_adv__invalid_src(void)
{
gnrc_ipv6_nib_nc_t nce;
gnrc_ipv6_nib_ft_t route;
void *state = NULL;
size_t icmpv6_len = _set_rtr_adv(&_rem_gb,
NDP_HOP_LIMIT, 0U, true, 0U,
_loc_l2, sizeof(_loc_l2),
32397U, &_loc_gb, _LOC_GB_PFX_LEN,
NDP_OPT_PI_FLAGS_L | NDP_OPT_PI_FLAGS_A,
true, &_abr_gb, _ABR_VERSION);
_netif_exp_t exp_netif;
_get_netif_exp(_mock_netif, &exp_netif);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
state = NULL;
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_ft_iter(NULL, 0, &state, &route),
"There is an unexpected forwarding entry");
TEST_ASSERT_NETIF_UNCHANGED(_mock_netif, exp_netif);
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__rtr_adv__invalid_hl(void)
{
gnrc_ipv6_nib_nc_t nce;
gnrc_ipv6_nib_ft_t route;
void *state = NULL;
size_t icmpv6_len = _set_rtr_adv(&_rem_ll,
194U, 0U, true, 0U,
_loc_l2, sizeof(_loc_l2),
32397U, &_loc_gb, _LOC_GB_PFX_LEN,
NDP_OPT_PI_FLAGS_L | NDP_OPT_PI_FLAGS_A,
true, &_abr_gb, _ABR_VERSION);
_netif_exp_t exp_netif;
_get_netif_exp(_mock_netif, &exp_netif);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
state = NULL;
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_ft_iter(NULL, 0, &state, &route),
"There is an unexpected forwarding entry");
TEST_ASSERT_NETIF_UNCHANGED(_mock_netif, exp_netif);
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__rtr_adv__invalid_code(void)
{
gnrc_ipv6_nib_nc_t nce;
gnrc_ipv6_nib_ft_t route;
void *state = NULL;
size_t icmpv6_len = _set_rtr_adv(&_rem_ll,
NDP_HOP_LIMIT, 201U, true, 0U,
_loc_l2, sizeof(_loc_l2),
32397U, &_loc_gb, _LOC_GB_PFX_LEN,
NDP_OPT_PI_FLAGS_L | NDP_OPT_PI_FLAGS_A,
true, &_abr_gb, _ABR_VERSION);
_netif_exp_t exp_netif;
_get_netif_exp(_mock_netif, &exp_netif);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
state = NULL;
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_ft_iter(NULL, 0, &state, &route),
"There is an unexpected forwarding entry");
TEST_ASSERT_NETIF_UNCHANGED(_mock_netif, exp_netif);
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__rtr_adv__invalid_icmpv6_len(void)
{
gnrc_ipv6_nib_nc_t nce;
gnrc_ipv6_nib_ft_t route;
void *state = NULL;
_netif_exp_t exp_netif;
_get_netif_exp(_mock_netif, &exp_netif);
_set_rtr_adv(&_rem_ll, NDP_HOP_LIMIT, 201U, true, 0U,
_loc_l2, sizeof(_loc_l2),
32397U, &_loc_gb, _LOC_GB_PFX_LEN,
NDP_OPT_PI_FLAGS_L | NDP_OPT_PI_FLAGS_A,
true, &_abr_gb, _ABR_VERSION);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6,
sizeof(ndp_rtr_adv_t) - 1);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
state = NULL;
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_ft_iter(NULL, 0, &state, &route),
"There is an unexpected forwarding entry");
TEST_ASSERT_NETIF_UNCHANGED(_mock_netif, exp_netif);
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__rtr_adv__invalid_opt_len(void)
{
gnrc_ipv6_nib_nc_t nce;
gnrc_ipv6_nib_ft_t route;
void *state = NULL;
size_t icmpv6_len = _set_rtr_adv(&_rem_ll,
NDP_HOP_LIMIT, 201U, true, 0U,
_loc_l2, sizeof(_loc_l2),
32397U, &_loc_gb, _LOC_GB_PFX_LEN,
NDP_OPT_PI_FLAGS_L | NDP_OPT_PI_FLAGS_A,
true, &_abr_gb, _ABR_VERSION);
ndp_opt_t *opt = (ndp_opt_t *)&_buffer[icmpv6_len];
_netif_exp_t exp_netif;
_get_netif_exp(_mock_netif, &exp_netif);
opt->type = NDP_OPT_SL2A;
opt->len = 0U;
icmpv6_len += sizeof(ndp_opt_t);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
state = NULL;
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_ft_iter(NULL, 0, &state, &route),
"There is an unexpected forwarding entry");
TEST_ASSERT_NETIF_UNCHANGED(_mock_netif, exp_netif);
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__rtr_adv__invalid_no_abro(void)
{
gnrc_ipv6_nib_nc_t nce;
gnrc_ipv6_nib_ft_t route;
void *state = NULL;
_netif_exp_t exp_netif;
_get_netif_exp(_mock_netif, &exp_netif);
_set_rtr_adv(&_rem_ll, NDP_HOP_LIMIT, 201U, true, 0U,
_loc_l2, sizeof(_loc_l2),
32397U, &_loc_gb, _LOC_GB_PFX_LEN,
NDP_OPT_PI_FLAGS_L | NDP_OPT_PI_FLAGS_A,
true, NULL, 0);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6,
sizeof(ndp_rtr_adv_t));
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
state = NULL;
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_ft_iter(NULL, 0, &state, &route),
"There is an unexpected forwarding entry");
TEST_ASSERT_NETIF_UNCHANGED(_mock_netif, exp_netif);
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static void test_handle_pkt__rtr_adv__success(uint8_t rtr_adv_flags,
bool set_rtr_adv_fields,
bool sl2ao, bool mtuo,
bool pio, uint8_t pio_flags,
bool ctxo)
{
gnrc_ipv6_nib_pl_t prefix;
gnrc_ipv6_nib_nc_t nce;
gnrc_ipv6_nib_ft_t route;
void *state = NULL;
size_t icmpv6_len = _set_rtr_adv(&_rem_ll, NDP_HOP_LIMIT, 0U,
set_rtr_adv_fields, rtr_adv_flags,
(sl2ao) ? _rem_l2 : NULL, sizeof(_rem_l2),
(mtuo) ? 32397U : 0U,
(pio) ? &_loc_gb : NULL, _LOC_GB_PFX_LEN,
pio_flags,
ctxo, &_abr_gb, _ABR_VERSION);
const unsigned exp_addr_count = _netif_addr_count(_mock_netif);
_netif_exp_t exp_netif;
_get_netif_exp(_mock_netif, &exp_netif);
TEST_ASSERT(gnrc_netif_ipv6_addr_idx(_mock_netif, &_loc_gb) < 0);
gnrc_ipv6_nib_handle_pkt(_mock_netif, ipv6, icmpv6, icmpv6_len);
if (set_rtr_adv_fields) {
while (gnrc_ipv6_nib_ft_iter(NULL, 0, &state, &route)) {
/* is default route */
if (ipv6_addr_is_unspecified(&route.dst)) {
break;
}
}
TEST_ASSERT_MESSAGE(ipv6_addr_equal(&_rem_ll, &route.next_hop),
"default route is not via RA's source");
TEST_ASSERT_EQUAL_INT(_mock_netif->pid, route.iface);
TEST_ASSERT_EQUAL_INT(_RETRANS_TIMER, _mock_netif->ipv6.retrans_time);
TEST_ASSERT_EQUAL_INT(_CUR_HL, _mock_netif->cur_hl);
}
else {
while (gnrc_ipv6_nib_ft_iter(NULL, 0, &state, &route)) {
TEST_ASSERT_MESSAGE(!ipv6_addr_is_unspecified(&route.dst),
"There is a default route, "
"though RA's router lifetime was 0.");
}
TEST_ASSERT_EQUAL_INT(exp_netif.retrans_timer,
_mock_netif->ipv6.retrans_time);
TEST_ASSERT_EQUAL_INT(exp_netif.cur_hl,
_mock_netif->cur_hl);
}
state = NULL;
if (ctxo) {
gnrc_sixlowpan_ctx_t *ctx;
TEST_ASSERT_NOT_NULL((ctx = gnrc_sixlowpan_ctx_lookup_addr(&_loc_gb)));
TEST_ASSERT(ipv6_addr_match_prefix(&_loc_gb,
&ctx->prefix) >= _LOC_GB_PFX_LEN);
TEST_ASSERT_EQUAL_INT(0U, ctx->flags_id & GNRC_SIXLOWPAN_CTX_FLAGS_CID_MASK);
TEST_ASSERT(ctx->flags_id & GNRC_SIXLOWPAN_CTX_FLAGS_COMP);
TEST_ASSERT_EQUAL_INT(_CTX_LTIME, ctx->ltime);
}
else {
TEST_ASSERT_NULL(gnrc_sixlowpan_ctx_lookup_addr(&_loc_gb));
}
if (sl2ao) {
TEST_ASSERT_MESSAGE(gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"No neighbor cache entry found");
TEST_ASSERT_MESSAGE((memcmp(&_rem_ll, &nce.ipv6, sizeof(_rem_ll)) == 0),
"_rem_ll != nce.ipv6");
TEST_ASSERT_EQUAL_INT(sizeof(_rem_l2), nce.l2addr_len);
TEST_ASSERT_MESSAGE((memcmp(&_rem_l2, &nce.l2addr, nce.l2addr_len) == 0),
"_rem_l2 != nce.l2addr");
TEST_ASSERT_EQUAL_INT(GNRC_IPV6_NIB_NC_INFO_NUD_STATE_STALE,
gnrc_ipv6_nib_nc_get_nud_state(&nce));
TEST_ASSERT_EQUAL_INT(_mock_netif->pid, gnrc_ipv6_nib_nc_get_iface(&nce));
TEST_ASSERT_EQUAL_INT(GNRC_IPV6_NIB_NC_INFO_AR_STATE_GC,
gnrc_ipv6_nib_nc_get_ar_state(&nce));
}
else {
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_nc_iter(0, &state, &nce),
"There is an unexpected neighbor cache entry");
}
if (mtuo) {
TEST_ASSERT_EQUAL_INT(32397U, _mock_netif->ipv6.mtu);
}
else {
TEST_ASSERT_EQUAL_INT(exp_netif.mtu, _mock_netif->ipv6.mtu);
}
state = NULL;
if (pio_flags & NDP_OPT_PI_FLAGS_L) {
pio = false;
/* Should the host erroneously receive a PIO with the L (on-link) flag set,
* then that PIO MUST be ignored.
* - https://datatracker.ietf.org/doc/html/rfc6775#section-5.4 */
}
if (pio) {
if (pio_flags & NDP_OPT_PI_FLAGS_A) {
TEST_ASSERT_MESSAGE(gnrc_netif_ipv6_addr_idx(_mock_netif,
&_loc_gb) >= 0,
"Address was not configured by PIO");
}
else {
TEST_ASSERT_MESSAGE(gnrc_netif_ipv6_addr_idx(_mock_netif,
&_loc_gb) < 0,
"Address was configured by PIO, "
"but A flag was set");
}
if (pio_flags & NDP_OPT_PI_FLAGS_L) {
TEST_ASSERT_MESSAGE(gnrc_ipv6_nib_pl_iter(0, &state, &prefix),
"No prefix list entry found");
TEST_ASSERT_MESSAGE(ipv6_addr_match_prefix(&_loc_gb,
&prefix.pfx) >= _LOC_GB_PFX_LEN,
"Unexpected prefix configured");
TEST_ASSERT_EQUAL_INT(_LOC_GB_PFX_LEN, prefix.pfx_len);
TEST_ASSERT_EQUAL_INT(_mock_netif->pid, prefix.iface);
TEST_ASSERT((_PIO_PFX_LTIME / MS_PER_SEC) < prefix.valid_until);
TEST_ASSERT((_PIO_PFX_LTIME / MS_PER_SEC) < prefix.pref_until);
}
}
else {
TEST_ASSERT_EQUAL_INT(exp_addr_count,
_netif_addr_count(_mock_netif));
TEST_ASSERT_MESSAGE(!gnrc_ipv6_nib_pl_iter(0, &state, &prefix),
"There is an unexpected prefix list entry");
}
/* neighbor solicitation is only sent when router lifetime is non-zero and
* when PIO configures GUA */
if (set_rtr_adv_fields && pio && (pio_flags & NDP_OPT_PI_FLAGS_A)) {
TEST_ASSERT(msg_avail() > 0);
while (msg_avail()) {
gnrc_netif_hdr_t *netif_hdr;
ipv6_hdr_t *ipv6_hdr;
ndp_nbr_sol_t *nbr_sol;
gnrc_pktsnip_t *pkt;
msg_t msg;
msg_receive(&msg);
TEST_ASSERT_EQUAL_INT(GNRC_NETAPI_MSG_TYPE_SND, msg.type);
pkt = msg.content.ptr;
/* first snip is a netif header to _mock_netif */
TEST_ASSERT_NOT_NULL(pkt);
TEST_ASSERT_EQUAL_INT(GNRC_NETTYPE_NETIF, pkt->type);
TEST_ASSERT(sizeof(gnrc_netif_hdr_t) <= pkt->size);
netif_hdr = pkt->data;
TEST_ASSERT_EQUAL_INT(_mock_netif->pid, netif_hdr->if_pid);
/* second snip is an IPv6 header to router (source of RA) */
TEST_ASSERT_NOT_NULL(pkt->next);
TEST_ASSERT_EQUAL_INT(GNRC_NETTYPE_IPV6, pkt->next->type);
TEST_ASSERT_EQUAL_INT(sizeof(ipv6_hdr_t), pkt->next->size);
ipv6_hdr = pkt->next->data;
TEST_ASSERT_MESSAGE(ipv6_addr_equal(&_rem_ll, &ipv6_hdr->dst),
"_rem_ll != ipv6_hdr->dst");
TEST_ASSERT_EQUAL_INT(255, ipv6_hdr->hl);
/* third snip is a valid solicited neighbor advertisement to tgt */
TEST_ASSERT_NOT_NULL(pkt->next->next);
TEST_ASSERT_EQUAL_INT(GNRC_NETTYPE_ICMPV6, pkt->next->next->type);
TEST_ASSERT_EQUAL_INT(sizeof(ndp_nbr_sol_t), pkt->next->next->size);
nbr_sol = pkt->next->next->data;
TEST_ASSERT_EQUAL_INT(ICMPV6_NBR_SOL, nbr_sol->type);
TEST_ASSERT_EQUAL_INT(0, nbr_sol->code);
TEST_ASSERT(!ipv6_addr_is_multicast(&nbr_sol->tgt));
TEST_ASSERT_MESSAGE(ipv6_addr_equal(&_rem_ll, &nbr_sol->tgt),
"_rem_ll != nbr_sol->tgt");
/* ARO and SL2AO (fields not checked here) are also there */
TEST_ASSERT_NOT_NULL(pkt->next->next->next);
TEST_ASSERT_NOT_NULL(pkt->next->next->next->next);
TEST_ASSERT_NULL(pkt->next->next->next->next->next);
gnrc_pktbuf_release(pkt);
}
TEST_ASSERT(gnrc_pktbuf_is_empty());
}
else {
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
}
static void test_handle_pkt__rtr_adv__success_all_zero(void)
{
test_handle_pkt__rtr_adv__success(0U, false, false, false, false, 0U,
false);
}
static void test_handle_pkt__rtr_adv__success_no_flags_no_opt(void)
{
test_handle_pkt__rtr_adv__success(0U, true, false, false, false, 0U, false);
}
static void test_handle_pkt__rtr_adv__success_no_opt(void)
{
/* these flags only make sense with SLAAC, so don't further test them below
* (except for PIO ;-)) */
test_handle_pkt__rtr_adv__success(NDP_RTR_ADV_FLAGS_M | NDP_RTR_ADV_FLAGS_O,
true, false, false, false, 0U, false);
}
static void test_handle_pkt__rtr_adv__success_sl2ao(void)
{
test_handle_pkt__rtr_adv__success(0U, true, true, false, false, 0U, false);
}
static void test_handle_pkt__rtr_adv__success_mtuo(void)
{
test_handle_pkt__rtr_adv__success(0U, true, false, true, false, 0U, false);
}
static void test_handle_pkt__rtr_adv__success_pio_00(void)
{
test_handle_pkt__rtr_adv__success(0U, true, false, false, true, 0U, false);
}
static void test_handle_pkt__rtr_adv__success_pio_L0(void)
{
test_handle_pkt__rtr_adv__success(0U, true, false, false, true,
NDP_OPT_PI_FLAGS_L, false);
}
static void test_handle_pkt__rtr_adv__success_pio_0A(void)
{
test_handle_pkt__rtr_adv__success(0U, true, false, false, true,
NDP_OPT_PI_FLAGS_A, false);
}
static void test_handle_pkt__rtr_adv__success_pio_LA(void)
{
test_handle_pkt__rtr_adv__success(0U, true, false, false, true,
NDP_OPT_PI_FLAGS_L | NDP_OPT_PI_FLAGS_A,
false);
}
static void test_handle_pkt__rtr_adv__success_6co_pio_0A(void)
{
test_handle_pkt__rtr_adv__success(0U, true, false, false, true,
NDP_OPT_PI_FLAGS_A, true);
}
static void test_handle_pkt__rtr_adv__success_6co_sl2ao_mtuo_pio_00(void)
{
test_handle_pkt__rtr_adv__success(0U, true, true, true, true, 0U, true);
}
static void test_handle_pkt__rtr_adv__success_6co_sl2ao_mtuo_pio_L0(void)
{
test_handle_pkt__rtr_adv__success(0U, true, true, true, true,
NDP_OPT_PI_FLAGS_L, true);
}
static void test_handle_pkt__rtr_adv__success_6co_sl2ao_mtuo_pio_0A(void)
{
test_handle_pkt__rtr_adv__success(0U, true, true, true, true,
NDP_OPT_PI_FLAGS_A, true);
}
static void test_handle_pkt__rtr_adv__success_6co_sl2ao_mtuo_pio_LA(void)
{
test_handle_pkt__rtr_adv__success(0U, true, true, true, true,
NDP_OPT_PI_FLAGS_L | NDP_OPT_PI_FLAGS_A,
true);
}
static void test_change_rtr_adv_iface(void)
{
TEST_ASSERT_MESSAGE(!(_mock_netif->flags & GNRC_NETIF_FLAGS_IPV6_RTR_ADV),
"RTR_ADV was unexpectedly set");
gnrc_ipv6_nib_change_rtr_adv_iface(_mock_netif, true);
TEST_ASSERT_MESSAGE(!(_mock_netif->flags & GNRC_NETIF_FLAGS_IPV6_RTR_ADV),
"RTR_ADV was unexpectedly changed");
gnrc_ipv6_nib_change_rtr_adv_iface(_mock_netif, false);
TEST_ASSERT_MESSAGE(!(_mock_netif->flags & GNRC_NETIF_FLAGS_IPV6_RTR_ADV),
"RTR_ADV was unexpectedly changed");
TEST_ASSERT_EQUAL_INT(0, msg_avail());
}
static Test *tests_gnrc_ipv6_nib(void)
{
EMB_UNIT_TESTFIXTURES(fixtures) {
/* gnrc_ipv6_nib_init() and gnrc_ipv6_nib_init_iface() "tested" in
* set-up (otherwise the following tests wouldn't work) */
/* TODO: ENETUNREACH when non-link-local communication is implemented */
new_TestFixture(test_get_next_hop_l2addr__link_local_EHOSTUNREACH),
new_TestFixture(test_get_next_hop_l2addr__ENETUNREACH),
new_TestFixture(test_get_next_hop_l2addr__link_local_static_conf),
new_TestFixture(test_get_next_hop_l2addr__link_local),
new_TestFixture(test_get_next_hop_l2addr__global_with_default_route),
new_TestFixture(test_handle_pkt__unknown_type),
new_TestFixture(test_handle_pkt__nbr_sol__invalid_hl),
new_TestFixture(test_handle_pkt__nbr_sol__invalid_code),
new_TestFixture(test_handle_pkt__nbr_sol__invalid_icmpv6_len),
new_TestFixture(test_handle_pkt__nbr_sol__invalid_tgt),
new_TestFixture(test_handle_pkt__nbr_sol__invalid_opt_len),
new_TestFixture(test_handle_pkt__nbr_sol__invalid_dst),
new_TestFixture(test_handle_pkt__nbr_sol__invalid_sl2ao),
new_TestFixture(test_handle_pkt__nbr_sol__tgt_not_assigned),
/* TODO add tests for unspecified source (involves SLAAC) */
new_TestFixture(test_handle_pkt__nbr_sol__ll_src_empty_nc),
new_TestFixture(test_handle_pkt__nbr_sol__ll_src_unmanaged_nce),
new_TestFixture(test_handle_pkt__nbr_sol__ll_src_no_sl2ao),
new_TestFixture(test_handle_pkt__nbr_adv__invalid_hl),
new_TestFixture(test_handle_pkt__nbr_adv__invalid_code),
new_TestFixture(test_handle_pkt__nbr_adv__invalid_icmpv6_len),
new_TestFixture(test_handle_pkt__nbr_adv__invalid_tgt),
new_TestFixture(test_handle_pkt__nbr_adv__invalid_flags),
new_TestFixture(test_handle_pkt__nbr_adv__invalid_opt_len),
new_TestFixture(test_handle_pkt__nbr_adv__unspecified_src),
new_TestFixture(test_handle_pkt__nbr_adv__unsolicited),
new_TestFixture(test_handle_pkt__nbr_adv__aro_not_my_eui64),
new_TestFixture(test_handle_pkt__nbr_adv__aro_duplicate),
/* solicited tested in get_next_hop_l2addr */
new_TestFixture(test_handle_pkt__rtr_sol),
new_TestFixture(test_handle_pkt__rtr_adv__invalid_src),
new_TestFixture(test_handle_pkt__rtr_adv__invalid_hl),
new_TestFixture(test_handle_pkt__rtr_adv__invalid_code),
new_TestFixture(test_handle_pkt__rtr_adv__invalid_icmpv6_len),
new_TestFixture(test_handle_pkt__rtr_adv__invalid_opt_len),
new_TestFixture(test_handle_pkt__rtr_adv__invalid_no_abro),
new_TestFixture(test_handle_pkt__rtr_adv__success_all_zero),
new_TestFixture(test_handle_pkt__rtr_adv__success_no_flags_no_opt),
new_TestFixture(test_handle_pkt__rtr_adv__success_no_opt),
new_TestFixture(test_handle_pkt__rtr_adv__success_sl2ao),
new_TestFixture(test_handle_pkt__rtr_adv__success_mtuo),
new_TestFixture(test_handle_pkt__rtr_adv__success_pio_00),
new_TestFixture(test_handle_pkt__rtr_adv__success_pio_L0),
new_TestFixture(test_handle_pkt__rtr_adv__success_pio_0A),
new_TestFixture(test_handle_pkt__rtr_adv__success_pio_LA),
new_TestFixture(test_handle_pkt__rtr_adv__success_6co_pio_0A),
new_TestFixture(test_handle_pkt__rtr_adv__success_6co_sl2ao_mtuo_pio_00),
new_TestFixture(test_handle_pkt__rtr_adv__success_6co_sl2ao_mtuo_pio_L0),
new_TestFixture(test_handle_pkt__rtr_adv__success_6co_sl2ao_mtuo_pio_0A),
new_TestFixture(test_handle_pkt__rtr_adv__success_6co_sl2ao_mtuo_pio_LA),
/* gnrc_ipv6_nib_handle_timer_event not testable in this context since
* we do not have access to the (internally defined) contexts required
* for it */
new_TestFixture(test_change_rtr_adv_iface),
};
EMB_UNIT_TESTCALLER(tests, _set_up, NULL, fixtures);
return (Test *)&tests;
}
int main(void)
{
_tests_init();
TESTS_START();
TESTS_RUN(tests_gnrc_ipv6_nib());
TESTS_END();
return 0;
}
int _mock_netif_get(gnrc_netapi_opt_t *opt)
{
switch (opt->opt) {
case NETOPT_ADDRESS:
if (opt->data_len < sizeof(_loc_l2)) {
return -EOVERFLOW;
}
memcpy(opt->data, _loc_l2, sizeof(_loc_l2));
return sizeof(_loc_l2);
case NETOPT_SRC_LEN: {
uint16_t *val = opt->data;
if (opt->data_len != sizeof(uint16_t)) {
return -EOVERFLOW;
}
*val = sizeof(_loc_l2);
return sizeof(uint16_t);
}
case NETOPT_IS_WIRED:
return 1;
case NETOPT_MAX_PDU_SIZE: {
uint16_t *val = opt->data;
if (opt->data_len != sizeof(uint16_t)) {
return -EOVERFLOW;
}
*val = IPV6_MIN_MTU;
return sizeof(uint16_t);
}
case NETOPT_PROTO: {
gnrc_nettype_t *val = opt->data;
if (opt->data_len != sizeof(gnrc_nettype_t)) {
return -EOVERFLOW;
}
*val = GNRC_NETTYPE_SIXLOWPAN;
return sizeof(gnrc_nettype_t);
}
default:
return -ENOTSUP;
}
}
static inline size_t ceil8(size_t size)
{
if (size % 8) {
return ((size / 8) + 1) * 8;
}
else {
return size;
}
}
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