nes-proj/tests/10-ipv6-nbr/nbr-multi-addrs/test.c
2018-10-24 07:03:10 -07:00

261 lines
8.3 KiB
C

/*
* Copyright (c) 2018, Yasuyuki Tanaka
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <contiki.h>
#include <sys/log.h>
#include <lib/random.h>
#include <net/nbr-table.h>
#include <net/ipv6/uip-ds6-nbr.h>
#include <unit-test/unit-test.h>
#include <stdlib.h>
#define LOG_MODULE "test"
#define LOG_LEVEL LOG_LEVEL_DBG
/* report function defined in unit-test.c */
void unit_test_print_report(const unit_test_t *utp);
static const uint8_t is_router = 1;
static const uint8_t state = NBR_INCOMPLETE;
static const nbr_table_reason_t reason = NBR_TABLE_REASON_UNDEFINED;
static void remove_all_entries_in_neighbor_cache(void);
PROCESS(node_process, "Node");
AUTOSTART_PROCESSES(&node_process);
void
my_test_print(const unit_test_t *utp)
{
unit_test_print_report(utp);
if(utp->result == unit_test_failure) {
printf("\nTEST FAILED\n");
exit(1); /* exit by failure */
}
}
/* my_always_return_null() is set to NBR_TABLE_FIND_REMOVABLE */
const linkaddr_t *
my_always_return_null(nbr_table_reason_t reason, void *data)
{
return NULL;
}
void
remove_all_entries_in_neighbor_cache(void)
{
uip_ds6_nbr_t *nbr, *next_nbr;
for(nbr = uip_ds6_nbr_head(); nbr != NULL; nbr = next_nbr) {
next_nbr = uip_ds6_nbr_next(nbr);
uip_ds6_nbr_rm(nbr);
}
/*
* uip_ds6_nbr_rm() cannot free the memory for an entry in nbr-table. There is
* no API to free or deallocate unused nbr-table entry. Because of that,
* nbr-table has some link-layer addresses even though this function removes
* all the neighbor cache entries.
*/
}
UNIT_TEST_REGISTER(add_v6addrs_to_neighbor,
"add IPv6 addresses to a single neighbor");
UNIT_TEST(add_v6addrs_to_neighbor)
{
uip_ipaddr_t ipaddr;
uip_lladdr_t lladdr;
uip_ds6_nbr_t *nbr;
const uip_lladdr_t *ret_lladdr;
memset(&ipaddr, 0, sizeof(ipaddr));
memset(&lladdr, 0, sizeof(lladdr));
UNIT_TEST_BEGIN();
/* make sure the neighbor cache table is empty */
remove_all_entries_in_neighbor_cache();
UNIT_TEST_ASSERT(uip_ds6_nbr_head() == NULL);
UNIT_TEST_ASSERT(uip_ds6_nbr_num() == 0);
/* prepare a link-layer address */
LOG_DBG("link-layer addr: ");
LOG_DBG_LLADDR((const linkaddr_t *)&lladdr);
LOG_DBG_("\n");
for(int i = 0; i <= UIP_DS6_NBR_MAX_6ADDRS_PER_NBR; i++) {
ipaddr.u8[0] = i;
LOG_DBG("adding ipv6 addr (");
LOG_DBG_6ADDR(&ipaddr);
LOG_DBG_("[i=%u])\n", i);
/* add a binding of the IPv6 address and the MAC address */
nbr = uip_ds6_nbr_add(&ipaddr, &lladdr, is_router, state, reason, NULL);
if(i < UIP_DS6_NBR_MAX_6ADDRS_PER_NBR) {
UNIT_TEST_ASSERT(nbr != NULL);
UNIT_TEST_ASSERT(memcmp(&nbr->ipaddr, &ipaddr, sizeof(ipaddr)) == 0);
UNIT_TEST_ASSERT(nbr->state == state);
UNIT_TEST_ASSERT(uip_ds6_nbr_num() == (i + 1));
/*
* for some reason, nbr->isrouter is not set if both UIP_ND6_SEND_RA and
* !UIP_CONF_ROUTER is 0 (see uip-ds6-nbr.c)
*/
// UNIT_TEST_ASSERT(nbr->isrouter == is_router);
ret_lladdr = uip_ds6_nbr_lladdr_from_ipaddr((const uip_ipaddr_t *)&ipaddr);
UNIT_TEST_ASSERT(ret_lladdr != NULL);
UNIT_TEST_ASSERT(memcmp(ret_lladdr, &lladdr, sizeof(lladdr)) == 0);
} else {
/* i == UIP_DS6_NBR_MAX_6ADDRS_PER_NBR; the address shouldn't be added */
UNIT_TEST_ASSERT(nbr == NULL);
}
}
UNIT_TEST_END();
}
UNIT_TEST_REGISTER(remove_v6addrs_of_neighbor,
"remove IPv6 addresses associated with a single neighbor");
UNIT_TEST(remove_v6addrs_of_neighbor)
{
uip_ipaddr_t ipaddr;
uip_lladdr_t lladdr;
uip_ds6_nbr_t *nbr, *next_nbr;
memset(&ipaddr, 0, sizeof(ipaddr));
memset(&lladdr, 0, sizeof(lladdr));
UNIT_TEST_BEGIN();
/* make sure the neighbor cache table is empty */
remove_all_entries_in_neighbor_cache();
UNIT_TEST_ASSERT(uip_ds6_nbr_head() == NULL);
UNIT_TEST_ASSERT(uip_ds6_nbr_num() == 0);
/* prepare a link-layer address */
LOG_DBG("link-layer addr: ");
LOG_DBG_LLADDR((const linkaddr_t *)&lladdr);
LOG_DBG_("\n");
/* fill the neighbor entry associated with the link-layer address */
for(int i = 0; i < UIP_DS6_NBR_MAX_6ADDRS_PER_NBR; i++) {
ipaddr.u8[0] = i;
nbr = uip_ds6_nbr_add(&ipaddr, &lladdr, is_router, state, reason, NULL);
UNIT_TEST_ASSERT(nbr != NULL);
UNIT_TEST_ASSERT(uip_ds6_nbr_num() == (i + 1));
}
/* remove IPv6 addresses for the link-layer address one by one */
for(nbr = uip_ds6_nbr_head(); nbr != NULL; nbr = next_nbr) {
LOG_DBG("removing nbr:%p\n", nbr);
next_nbr = uip_ds6_nbr_next(nbr);
UNIT_TEST_ASSERT(uip_ds6_nbr_rm(nbr) == 1);
}
UNIT_TEST_ASSERT(uip_ds6_nbr_num() == 0);
UNIT_TEST_ASSERT(uip_ds6_nbr_head() == NULL);
UNIT_TEST_END();
}
UNIT_TEST_REGISTER(fill_neighbor_cache_table,
"fill the neighbor cache table");
UNIT_TEST(fill_neighbor_cache_table)
{
/*
* We should be able to add the same number of link-layer addresses as
* NBR_TABLE_MAX_NEIGHBORS. In addition, we should be add the same number of
* IPv6 addresses per link-layer address as
* UIP_DS6_NBR_CONF_MAX_6ADDRS_PER_NBR.
*/
uip_ipaddr_t ipaddr;
uip_lladdr_t lladdr;
uip_ds6_nbr_t *nbr;
memset(&ipaddr, 0, sizeof(ipaddr));
memset(&lladdr, 0, sizeof(lladdr));
UNIT_TEST_BEGIN();
/* make sure the neighbor cache table is empty */
remove_all_entries_in_neighbor_cache();
UNIT_TEST_ASSERT(uip_ds6_nbr_head() == NULL);
UNIT_TEST_ASSERT(uip_ds6_nbr_num() == 0);
for(int i = 0; i <= NBR_TABLE_MAX_NEIGHBORS; i++) {
lladdr.addr[0] = i & 0xFF;
lladdr.addr[1] = i >> 8;
for(int j = 0; j <= UIP_DS6_NBR_MAX_6ADDRS_PER_NBR; j++) {
ipaddr.u8[0] = i & 0xFF;
ipaddr.u8[1] = i >> 8;
ipaddr.u8[2] = j;
LOG_DBG("adding ipv6 addr (");
LOG_DBG_6ADDR(&ipaddr);
LOG_DBG_(") to link-layer addr (");
LOG_DBG_LLADDR((const linkaddr_t *)&lladdr);
LOG_DBG_(") [i=%u,j=%u]\n", i, j);
nbr = uip_ds6_nbr_add(&ipaddr, &lladdr, is_router, state, reason, NULL);
if((i < NBR_TABLE_MAX_NEIGHBORS) &&
(j < UIP_DS6_NBR_MAX_6ADDRS_PER_NBR)) {
UNIT_TEST_ASSERT(nbr != NULL);
} else if(i == NBR_TABLE_MAX_NEIGHBORS) {
/* we should not be able to add a link-layer address any more */
UNIT_TEST_ASSERT(j == 0);
UNIT_TEST_ASSERT(nbr == NULL);
break;
} else if(j == UIP_DS6_NBR_MAX_6ADDRS_PER_NBR) {
/* we should not be able to add an IPv6 address any more */
UNIT_TEST_ASSERT(i < NBR_TABLE_MAX_NEIGHBORS);
UNIT_TEST_ASSERT(nbr == NULL);
break;
} else {
/* shouldn't come here */
UNIT_TEST_ASSERT(false);
}
}
}
UNIT_TEST_END();
}
PROCESS_THREAD(node_process, ev, data)
{
PROCESS_BEGIN();
UNIT_TEST_RUN(add_v6addrs_to_neighbor);
UNIT_TEST_RUN(remove_v6addrs_of_neighbor);
UNIT_TEST_RUN(fill_neighbor_cache_table);
printf("\nTEST SUCCEEDED\n");
exit(0); /* success: all the test passed */
PROCESS_END();
}