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openvswitch/tests/test-aa.c
Ben Pfaff 22736f59c1 lldp: Get rid of POKE macros in favor of inline functions. 
The POKE macros previously used here don't match the style usually used in
OVS and they require the user to know exactly how many bytes to reserve.
This commit replaces them by easier-to-use inline functions that take
advantage of the ofpbuf interface.

Also removes a few PEEK macros that weren't used anywhere.

Signed-off-by: Ben Pfaff <blp@nicira.com>
2015-03-03 16:19:27 -08:00

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/*
* Copyright (c) 2015 Avaya, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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>
#undef NDEBUG
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ovs-lldp.h"
#include "ovstest.h"
#define ETH_TYPE_LLDP 0x88cc
/* Dummy MAC addresses */
char chassis_mac[ETHER_ADDR_LEN] = { 0x5e, 0x10, 0x8e, 0xe7, 0x84, 0xad };
uint8_t eth_src[ETHER_ADDR_LEN] = { 0x5e, 0x10, 0x8e, 0xe7, 0x84, 0xad };
/* LLDP multicast address */
static const uint8_t eth_addr_lldp[6] = {0x01, 0x80, 0xC2, 0x00, 0x00, 0x0e};
/* Count of tests run */
int num_tests = 0;
/*
* Helper function to validate port info
*/
static void
check_received_port(struct lldpd_port *sport,
struct lldpd_port *rport)
{
assert(rport->p_id_subtype == sport->p_id_subtype);
assert(rport->p_id_len == sport->p_id_len);
assert(strncmp(rport->p_id, sport->p_id, sport->p_id_len) == 0);
assert(strcmp(rport->p_descr, sport->p_descr) == 0);
return;
}
/*
* Helper function to validate chassis info
*/
static void
check_received_chassis(struct lldpd_chassis *schassis,
struct lldpd_chassis *rchassis)
{
assert(rchassis->c_id_subtype == schassis->c_id_subtype);
assert(rchassis->c_id_len == schassis->c_id_len);
assert(strncmp(rchassis->c_id, schassis->c_id, schassis->c_id_len) == 0);
assert(strcmp(rchassis->c_name, schassis->c_name) == 0);
assert(strcmp(rchassis->c_descr, schassis->c_descr) == 0);
assert(rchassis->c_cap_available == schassis->c_cap_available);
assert(rchassis->c_cap_enabled == schassis->c_cap_enabled);
return;
}
/*
* Helper function to validate auto-attach info
*/
static void
check_received_aa(struct lldpd_port *sport,
struct lldpd_port *rport,
struct lldpd_aa_isid_vlan_maps_tlv *smap)
{
struct lldpd_aa_isid_vlan_maps_tlv *received_map;
int i = 0;
assert(rport->p_element.type == sport->p_element.type);
assert(rport->p_element.mgmt_vlan == sport->p_element.mgmt_vlan);
assert(rport->p_element.system_id.system_mac[0] ==
sport->p_element.system_id.system_mac[0]);
assert(rport->p_element.system_id.system_mac[1] ==
sport->p_element.system_id.system_mac[1]);
assert(rport->p_element.system_id.system_mac[2] ==
sport->p_element.system_id.system_mac[2]);
assert(rport->p_element.system_id.system_mac[3] ==
sport->p_element.system_id.system_mac[3]);
assert(rport->p_element.system_id.system_mac[4] ==
sport->p_element.system_id.system_mac[4]);
assert(rport->p_element.system_id.system_mac[5] ==
sport->p_element.system_id.system_mac[5]);
assert(rport->p_element.system_id.conn_type ==
sport->p_element.system_id.conn_type);
assert(rport->p_element.system_id.smlt_id ==
sport->p_element.system_id.smlt_id);
assert(rport->p_element.system_id.mlt_id[0] ==
sport->p_element.system_id.mlt_id[0]);
assert(rport->p_element.system_id.mlt_id[1] ==
sport->p_element.system_id.mlt_id[1]);
/* Should receive 2 mappings */
assert(!list_is_empty(&rport->p_isid_vlan_maps.m_entries));
/* For each received isid/vlan mapping */
LIST_FOR_EACH (received_map, m_entries,
&rport->p_isid_vlan_maps.m_entries) {
/* Validate against mapping sent */
assert(smap[i].isid_vlan_data.status ==
received_map->isid_vlan_data.status);
assert(smap[i].isid_vlan_data.vlan ==
received_map->isid_vlan_data.vlan);
assert(smap[i].isid_vlan_data.isid[0] ==
received_map->isid_vlan_data.isid[0]);
assert(smap[i].isid_vlan_data.isid[1] ==
received_map->isid_vlan_data.isid[1]);
assert(smap[i].isid_vlan_data.isid[2] ==
received_map->isid_vlan_data.isid[2]);
/* Next mapping sent */
i++;
}
assert(i == 2);
return;
}
/*
* Validate basic send/receive processing
*/
static int
test_aa_send(void)
{
struct lldp *lldp;
struct lldpd_hardware hardware;
struct lldpd_chassis chassis;
struct lldpd_chassis *nchassis = NULL;
struct lldpd_port *nport = NULL;
struct lldpd_hardware *hw = NULL;
struct lldpd_chassis *ch = NULL;
struct lldpd_aa_isid_vlan_maps_tlv map_init[2];
struct lldpd_aa_isid_vlan_maps_tlv map[2];
uint32_t stub[512 / 4];
struct dp_packet packet;
int n;
/* Prepare data used to construct and validate LLDPPDU */
hardware.h_lport.p_id_subtype = LLDP_PORTID_SUBTYPE_IFNAME;
hardware.h_lport.p_id = "FastEthernet 1/5";
hardware.h_lport.p_id_len = strlen(hardware.h_lport.p_id);
hardware.h_lport.p_descr = "Fake port description";
hardware.h_lport.p_mfs = 1516;
/* Auto attach element discovery info */
hardware.h_lport.p_element.type = LLDP_TLV_AA_ELEM_TYPE_TAG_CLIENT;
hardware.h_lport.p_element.mgmt_vlan = 0xCDC;
hardware.h_lport.p_element.system_id.system_mac[0] = 0x1;
hardware.h_lport.p_element.system_id.system_mac[1] = 0x2;
hardware.h_lport.p_element.system_id.system_mac[2] = 0x3;
hardware.h_lport.p_element.system_id.system_mac[3] = 0x4;
hardware.h_lport.p_element.system_id.system_mac[4] = 0x5;
hardware.h_lport.p_element.system_id.system_mac[5] = 0x6;
hardware.h_lport.p_element.system_id.conn_type = 0x5;
hardware.h_lport.p_element.system_id.smlt_id = 0x3CC;
hardware.h_lport.p_element.system_id.mlt_id[0] = 0xB;
hardware.h_lport.p_element.system_id.mlt_id[1] = 0xE;
/* Local chassis info */
chassis.c_id_subtype = LLDP_CHASSISID_SUBTYPE_LLADDR;
chassis.c_id = chassis_mac;
chassis.c_id_len = ETHER_ADDR_LEN;
chassis.c_name = "Dummy chassis";
chassis.c_descr = "Long dummy chassis description";
chassis.c_cap_available = LLDP_CAP_BRIDGE;
chassis.c_cap_enabled = LLDP_CAP_BRIDGE;
/* ISID/VLAN mappings */
map_init[0].isid_vlan_data.status = 0xC;
map_init[0].isid_vlan_data.vlan = 0x64;
map_init[0].isid_vlan_data.isid[0] = 1;
map_init[0].isid_vlan_data.isid[1] = 2;
map_init[0].isid_vlan_data.isid[2] = 3;
map_init[1].isid_vlan_data.status = 0xD;
map_init[1].isid_vlan_data.vlan = 0xF;
map_init[1].isid_vlan_data.isid[0] = 4;
map_init[1].isid_vlan_data.isid[1] = 5;
map_init[1].isid_vlan_data.isid[2] = 6;
/* Prepare an empty packet buffer */
dp_packet_use_stub(&packet, stub, sizeof stub);
dp_packet_clear(&packet);
/* Create a dummy lldp instance */
lldp = lldp_create_dummy();
if ((lldp == NULL) ||
(lldp->lldpd == NULL) ||
(lldp->lldpd->g_hardware.h_entries.next == NULL)) {
printf("Error: unable to create dummy lldp instance");
return 1;
}
/* Populate instance with local chassis info */
hw = (struct lldpd_hardware *) lldp->lldpd->g_hardware.h_entries.next;
ch = hw->h_lport.p_chassis;
ch->c_id_subtype = chassis.c_id_subtype;
ch->c_id = chassis.c_id;
ch->c_id_len = chassis.c_id_len;
ch->c_name = chassis.c_name;
ch->c_descr = chassis.c_descr;
ch->c_cap_available = chassis.c_cap_available;
ch->c_cap_enabled = chassis.c_cap_enabled;
/* Populate instance with local port info */
hw->h_lport.p_id_subtype = hardware.h_lport.p_id_subtype;
hw->h_lport.p_id = hardware.h_lport.p_id;
hw->h_lport.p_id_len = strlen(hw->h_lport.p_id);
hw->h_lport.p_descr = hardware.h_lport.p_descr;
hw->h_lport.p_mfs = hardware.h_lport.p_mfs;
/* Populate instance with auto attach element discovery info */
hw->h_lport.p_element.type = hardware.h_lport.p_element.type;
hw->h_lport.p_element.mgmt_vlan = hardware.h_lport.p_element.mgmt_vlan;
hw->h_lport.p_element.system_id.system_mac[0] =
hardware.h_lport.p_element.system_id.system_mac[0];
hw->h_lport.p_element.system_id.system_mac[1] =
hardware.h_lport.p_element.system_id.system_mac[1];
hw->h_lport.p_element.system_id.system_mac[2] =
hardware.h_lport.p_element.system_id.system_mac[2];
hw->h_lport.p_element.system_id.system_mac[3] =
hardware.h_lport.p_element.system_id.system_mac[3];
hw->h_lport.p_element.system_id.system_mac[4] =
hardware.h_lport.p_element.system_id.system_mac[4];
hw->h_lport.p_element.system_id.system_mac[5] =
hardware.h_lport.p_element.system_id.system_mac[5];
hw->h_lport.p_element.system_id.conn_type =
hardware.h_lport.p_element.system_id.conn_type;
hw->h_lport.p_element.system_id.smlt_id =
hardware.h_lport.p_element.system_id.smlt_id;
hw->h_lport.p_element.system_id.mlt_id[0] =
hardware.h_lport.p_element.system_id.mlt_id[0];
hw->h_lport.p_element.system_id.mlt_id[1] =
hardware.h_lport.p_element.system_id.mlt_id[1];
/* Populate instance with two auto attach isid/vlan mappings */
map[0].isid_vlan_data.status = map_init[0].isid_vlan_data.status;
map[0].isid_vlan_data.vlan = map_init[0].isid_vlan_data.vlan;
map[0].isid_vlan_data.isid[0] = map_init[0].isid_vlan_data.isid[0];
map[0].isid_vlan_data.isid[1] = map_init[0].isid_vlan_data.isid[1];
map[0].isid_vlan_data.isid[2] = map_init[0].isid_vlan_data.isid[2];
map[1].isid_vlan_data.status = map_init[1].isid_vlan_data.status;
map[1].isid_vlan_data.vlan = map_init[1].isid_vlan_data.vlan;
map[1].isid_vlan_data.isid[0] = map_init[1].isid_vlan_data.isid[0];
map[1].isid_vlan_data.isid[1] = map_init[1].isid_vlan_data.isid[1];
map[1].isid_vlan_data.isid[2] = map_init[1].isid_vlan_data.isid[2];
list_init(&hw->h_lport.p_isid_vlan_maps.m_entries);
list_push_back(&hw->h_lport.p_isid_vlan_maps.m_entries,
&map[0].m_entries);
list_push_back(&hw->h_lport.p_isid_vlan_maps.m_entries,
&map[1].m_entries);
/* Construct LLDPPDU (including Ethernet header) */
eth_compose(&packet, eth_addr_lldp, eth_src, ETH_TYPE_LLDP, 0);
n = lldp_send(lldp->lldpd, hw, &packet);
if (n == 0) {
printf("Error: unable to build packet\n");
return 1;
}
/* Decode the constructed LLDPPDU */
assert(lldp_decode(NULL, packet.data_, packet.size_, hw,
&nchassis, &nport) != -1);
/* Expecting returned pointers to allocated structures */
if (!nchassis || !nport) {
printf("Error: unable to decode packet");
return 1;
}
/* Verify chassis values */
check_received_chassis(&chassis, nchassis);
/* Verify port values */
check_received_port(&hardware.h_lport, nport);
/* Verify auto attach values */
check_received_aa(&hardware.h_lport, nport, map_init);
return 0;
}
static void
test_aa_main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
{
int num_errors = 0;
/* Make sure we emit valid auto-attach LLDPPDUs */
num_tests++;
num_errors += test_aa_send();
/* Add more tests here */
printf("executed %d tests, %d errors\n", num_tests, num_errors);
exit(num_errors != 0);
}
OVSTEST_REGISTER("test-aa", test_aa_main);
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