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/*
* Copyright (C) 2012-2017 by Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <config.h>
#include "dhcpd.h"
#include <atf-c.h>
/*
* Test the load balancing code.
*
* The two main variables are:
* packet => the "packet" being processed
* state => the "state" of the failover peer
* We only fill in the fields necessary for our testing
* packet->raw->secs => amount of time the client has been trying
* packet->raw->hlen => the length of the mac address of the client
* packet->raw->chaddr => the mac address of the client
* To simplify the tests the mac address will be only 1 byte long and
* not really matter. Instead the hba will be all 1s and the tests
* will use the primary/secondary flag to change the expected result.
*
* state->i_am => primary or secondary
* state->load_balance_max_secs => maxixum time for a client to be trying
* before the other peer responds
* set to 5 for these tests
* state->hba = array of hash buckets assigning the hash to primary or secondary
* set to all ones (all primary) for theses tests
*/
ATF_TC(load_balance);
ATF_TC_HEAD(load_balance, tc)
{
atf_tc_set_md_var(tc, "descr", "This test case checks that "
"load balancing works.");
}
ATF_TC_BODY(load_balance, tc)
{
#if defined(FAILOVER_PROTOCOL)
struct packet packet;
struct dhcp_packet raw;
dhcp_failover_state_t pstate, sstate;
u_int8_t hba[256];
memset(&packet, 0, sizeof(struct packet));
memset(&raw, 0, sizeof(struct dhcp_packet));
packet.raw = &raw;
raw.hlen = 1;
raw.chaddr[0] = 14;
memset(hba, 0xFF, 256);
/* primary state */
memset(&pstate, 0, sizeof(dhcp_failover_state_t));
pstate.i_am = primary;
pstate.load_balance_max_secs = 5;
pstate.hba = hba;
/* secondary state, we can reuse the hba as it doesn't change */
memset(&sstate, 0, sizeof(dhcp_failover_state_t));
sstate.i_am = secondary;
sstate.load_balance_max_secs = 5;
sstate.hba = hba;
/* Basic check, primary accepted, secondary not */
raw.secs = htons(0);
if (load_balance_mine(&packet, &pstate) != 1) {
atf_tc_fail("ERROR: primary not accepted %s:%d", MDL);
}
if (load_balance_mine(&packet, &sstate) != 0) {
atf_tc_fail("ERROR: secondary accepted %s:%d", MDL);
}
/* Timeout not exceeded, primary accepted, secondary not */
raw.secs = htons(2);
if (load_balance_mine(&packet, &pstate) != 1) {
atf_tc_fail("ERROR: primary not accepted %s:%d", MDL);
}
if (load_balance_mine(&packet, &sstate) != 0) {
atf_tc_fail("ERROR: secondary accepted %s:%d", MDL);
}
/* Timeout exceeded, both accepted */
raw.secs = htons(6);
if (load_balance_mine(&packet, &pstate) != 1) {
atf_tc_fail("ERROR: primary not accepted %s:%d", MDL);
}
if (load_balance_mine(&packet, &sstate) != 1) {
atf_tc_fail("ERROR: secondary not accepted %s:%d", MDL);
}
/* Timeout exeeded with a large value, both accepted */
raw.secs = htons(257);
if (load_balance_mine(&packet, &pstate) != 1) {
atf_tc_fail("ERROR: primary not accepted %s:%d", MDL);
}
if (load_balance_mine(&packet, &sstate) != 1) {
atf_tc_fail("ERROR: secondary not accepted %s:%d", MDL);
}
#else
atf_tc_skip("failover is disabled");
#endif
}
ATF_TC(load_balance_swap);
ATF_TC_HEAD(load_balance_swap, tc)
{
atf_tc_set_md_var(tc, "descr", "This test case checks that "
"load balancing works with byteswapping.");
}
ATF_TC_BODY(load_balance_swap, tc)
{
#if defined(FAILOVER_PROTOCOL)
struct packet packet;
struct dhcp_packet raw;
dhcp_failover_state_t pstate, sstate;
u_int8_t hba[256];
check_secs_byte_order = 1;
memset(&packet, 0, sizeof(struct packet));
memset(&raw, 0, sizeof(struct dhcp_packet));
packet.raw = &raw;
raw.hlen = 1;
raw.chaddr[0] = 14;
memset(hba, 0xFF, 256);
/* primary state */
memset(&pstate, 0, sizeof(dhcp_failover_state_t));
pstate.i_am = primary;
pstate.load_balance_max_secs = 5;
pstate.hba = hba;
/* secondary state, we can reuse the hba as it doesn't change */
memset(&sstate, 0, sizeof(dhcp_failover_state_t));
sstate.i_am = secondary;
sstate.load_balance_max_secs = 5;
sstate.hba = hba;
/* Small byteswapped timeout, primary accepted, secondary not*/
raw.secs = htons(256);
if (load_balance_mine(&packet, &pstate) != 1) {
atf_tc_fail("ERROR: primary not accepted %s:%d", MDL);
}
if (load_balance_mine(&packet, &sstate) != 0) {
atf_tc_fail("ERROR: secondary accepted %s:%d", MDL);
}
/* Large byteswapped timeout, both accepted*/
raw.secs = htons(256 * 6);
if (load_balance_mine(&packet, &pstate) != 1) {
atf_tc_fail("ERROR: primary not accepted %s:%d", MDL);
}
if (load_balance_mine(&packet, &sstate) != 1) {
atf_tc_fail("ERROR: secondary not accepted %s:%d", MDL);
}
#else
atf_tc_skip("failover is disabled");
#endif
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, load_balance);
ATF_TP_ADD_TC(tp, load_balance_swap);
return (atf_no_error());
}
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