tests/test-aa.c

   1 /*
   2  * Copyright (c) 2015 Avaya, Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <config.h>
  18 #undef NDEBUG
  19 #include <assert.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include "ovs-lldp.h"
  24 #include "ovstest.h"
  25
  26 #define ETH_TYPE_LLDP   0x88cc
  27
  28 /* Dummy MAC addresses */
  29 static const struct eth_addr chassis_mac = { { { 0x5e, 0x10, 0x8e, 0xe7, 0x84, 0xad } } };
  30 static const struct eth_addr eth_src = { { { 0x5e, 0x10, 0x8e, 0xe7, 0x84, 0xad } } };
  31
  32 /* LLDP multicast address */
  33 static const struct eth_addr eth_addr_lldp = { { { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x0e } } };
  34
  35 /* Count of tests run */
  36 static int num_tests = 0;
  37
  38
  39 /*
  40  * Helper function to validate port info
  41  */
  42 static void
  43 check_received_port(struct lldpd_port *sport,
  44                     struct lldpd_port *rport)
  45 {
  46     assert(rport->p_id_subtype == sport->p_id_subtype);
  47     assert(rport->p_id_len == sport->p_id_len);
  48     assert(strncmp(rport->p_id, sport->p_id, sport->p_id_len) == 0);
  49     assert(strcmp(rport->p_descr, sport->p_descr) == 0);
  50
  51     return;
  52 }
  53
  54
  55 /*
  56  * Helper function to validate chassis info
  57  */
  58 static void
  59 check_received_chassis(struct lldpd_chassis *schassis,
  60                        struct lldpd_chassis *rchassis)
  61 {
  62     assert(rchassis->c_id_subtype == schassis->c_id_subtype);
  63     assert(rchassis->c_id_len == schassis->c_id_len);
  64     assert(memcmp(rchassis->c_id, schassis->c_id, schassis->c_id_len) == 0);
  65     assert(strcmp(rchassis->c_name, schassis->c_name) == 0);
  66     assert(strcmp(rchassis->c_descr, schassis->c_descr) == 0);
  67     assert(rchassis->c_cap_available == schassis->c_cap_available);
  68     assert(rchassis->c_cap_enabled == schassis->c_cap_enabled);
  69
  70     return;
  71 }
  72
  73
  74 /*
  75  * Helper function to validate auto-attach info
  76  */
  77 static void
  78 check_received_aa(struct lldpd_port *sport,
  79                   struct lldpd_port *rport,
  80                   struct lldpd_aa_isid_vlan_maps_tlv *smap)
  81 {
  82     struct lldpd_aa_isid_vlan_maps_tlv *received_map;
  83     int i = 0;
  84
  85     assert(rport->p_element.type == sport->p_element.type);
  86     assert(rport->p_element.mgmt_vlan == sport->p_element.mgmt_vlan);
  87     assert(eth_addr_equals(rport->p_element.system_id.system_mac,
  88                            sport->p_element.system_id.system_mac));
  89     assert(rport->p_element.system_id.conn_type ==
  90            sport->p_element.system_id.conn_type);
  91     assert(rport->p_element.system_id.rsvd ==
  92            sport->p_element.system_id.rsvd);
  93     assert(rport->p_element.system_id.rsvd2[0] ==
  94            sport->p_element.system_id.rsvd2[0]);
  95     assert(rport->p_element.system_id.rsvd2[1] ==
  96            sport->p_element.system_id.rsvd2[1]);
  97
  98     /* Should receive 2 mappings */
  99     assert(!ovs_list_is_empty(&rport->p_isid_vlan_maps));
 100
 101     /* For each received isid/vlan mapping */
 102     LIST_FOR_EACH (received_map, m_entries, &rport->p_isid_vlan_maps) {
 103
 104         /* Validate against mapping sent */
 105         assert(smap[i].isid_vlan_data.status ==
 106                received_map->isid_vlan_data.status);
 107         assert(smap[i].isid_vlan_data.vlan ==
 108                received_map->isid_vlan_data.vlan);
 109         assert(smap[i].isid_vlan_data.isid ==
 110                received_map->isid_vlan_data.isid);
 111
 112         /* Next mapping sent */
 113         i++;
 114     }
 115     assert(i == 2);
 116
 117     return;
 118 }
 119
 120
 121 /*
 122  * Validate basic send/receive processing
 123  */
 124 static int
 125 test_aa_send(void)
 126 {
 127     struct lldp           *lldp;
 128     struct lldpd_hardware hardware;
 129     struct lldpd_chassis  chassis;
 130
 131     struct lldpd_chassis *nchassis = NULL;
 132     struct lldpd_port    *nport = NULL;
 133
 134     struct lldpd_hardware *hw = NULL;
 135     struct lldpd_chassis  *ch = NULL;
 136
 137     struct lldpd_aa_isid_vlan_maps_tlv map_init[2];
 138     struct lldpd_aa_isid_vlan_maps_tlv map[2];
 139
 140     uint32_t      stub[512 / 4];
 141     struct dp_packet packet;
 142
 143     int n;
 144
 145     /* Prepare data used to construct and validate LLDPPDU */
 146     hardware.h_lport.p_id_subtype = LLDP_PORTID_SUBTYPE_IFNAME;
 147     hardware.h_lport.p_id = "FastEthernet 1/5";
 148     hardware.h_lport.p_id_len = strlen(hardware.h_lport.p_id);
 149     hardware.h_lport.p_descr = "Fake port description";
 150     hardware.h_lport.p_mfs = 1516;
 151
 152     /* Auto attach element discovery info */
 153     hardware.h_lport.p_element.type =
 154         LLDP_TLV_AA_ELEM_TYPE_CLIENT_VIRTUAL_SWITCH;
 155     hardware.h_lport.p_element.mgmt_vlan = 0xCDC;
 156     eth_addr_from_uint64(0x010203040506ULL,
 157                          &hardware.h_lport.p_element.system_id.system_mac);
 158
 159     hardware.h_lport.p_element.system_id.conn_type = 0x5;
 160     hardware.h_lport.p_element.system_id.rsvd = 0x3CC;
 161     hardware.h_lport.p_element.system_id.rsvd2[0] = 0xB;
 162     hardware.h_lport.p_element.system_id.rsvd2[1] = 0xE;
 163
 164     /* Local chassis info */
 165     chassis.c_id_subtype = LLDP_CHASSISID_SUBTYPE_LLADDR;
 166     chassis.c_id = CONST_CAST(uint8_t *, chassis_mac.ea);
 167     chassis.c_id_len = ETH_ADDR_LEN;
 168     chassis.c_name = "Dummy chassis";
 169     chassis.c_descr = "Long dummy chassis description";
 170     chassis.c_cap_available = LLDP_CAP_BRIDGE;
 171     chassis.c_cap_enabled = LLDP_CAP_BRIDGE;
 172
 173     /* ISID/VLAN mappings */
 174     map_init[0].isid_vlan_data.status  = 0xC;
 175     map_init[0].isid_vlan_data.vlan    = 0x64;
 176     map_init[0].isid_vlan_data.isid    = 0x010203;
 177
 178     map_init[1].isid_vlan_data.status  = 0xD;
 179     map_init[1].isid_vlan_data.vlan    = 0xF;
 180     map_init[1].isid_vlan_data.isid    = 0x040506;
 181
 182     /* Prepare an empty packet buffer */
 183     dp_packet_use_stub(&packet, stub, sizeof stub);
 184     dp_packet_clear(&packet);
 185
 186     /* Create a dummy lldp instance */
 187     lldp = lldp_create_dummy();
 188     if ((lldp == NULL) ||
 189         (lldp->lldpd == NULL) ||
 190         ovs_list_is_empty(&lldp->lldpd->g_hardware)) {
 191         printf("Error: unable to create dummy lldp instance");
 192         return 1;
 193     }
 194
 195     /* Populate instance with local chassis info */
 196     hw = lldpd_first_hardware(lldp->lldpd);
 197     ch = hw->h_lport.p_chassis;
 198     ch->c_id_subtype = chassis.c_id_subtype;
 199     ch->c_id = chassis.c_id;
 200     ch->c_id_len = chassis.c_id_len;
 201     ch->c_name = chassis.c_name;
 202     ch->c_descr = chassis.c_descr;
 203     ch->c_cap_available = chassis.c_cap_available;
 204     ch->c_cap_enabled = chassis.c_cap_enabled;
 205
 206     /* Populate instance with local port info */
 207     hw->h_lport.p_id_subtype = hardware.h_lport.p_id_subtype;
 208     hw->h_lport.p_id = hardware.h_lport.p_id;
 209     hw->h_lport.p_id_len = strlen(hw->h_lport.p_id);
 210     hw->h_lport.p_descr = hardware.h_lport.p_descr;
 211     hw->h_lport.p_mfs = hardware.h_lport.p_mfs;
 212
 213     /* Populate instance with auto attach element discovery info */
 214
 215     hw->h_lport.p_element.type = hardware.h_lport.p_element.type;
 216     hw->h_lport.p_element.mgmt_vlan = hardware.h_lport.p_element.mgmt_vlan;
 217     hw->h_lport.p_element.system_id.system_mac =
 218         hardware.h_lport.p_element.system_id.system_mac;
 219
 220     hw->h_lport.p_element.system_id.conn_type =
 221         hardware.h_lport.p_element.system_id.conn_type;
 222     hw->h_lport.p_element.system_id.rsvd =
 223         hardware.h_lport.p_element.system_id.rsvd;
 224     hw->h_lport.p_element.system_id.rsvd2[0] =
 225         hardware.h_lport.p_element.system_id.rsvd2[0];
 226     hw->h_lport.p_element.system_id.rsvd2[1] =
 227         hardware.h_lport.p_element.system_id.rsvd2[1];
 228
 229     /* Populate instance with two auto attach isid/vlan mappings */
 230     map[0].isid_vlan_data.status  = map_init[0].isid_vlan_data.status;
 231     map[0].isid_vlan_data.vlan    = map_init[0].isid_vlan_data.vlan;
 232     map[0].isid_vlan_data.isid    = map_init[0].isid_vlan_data.isid;
 233
 234     map[1].isid_vlan_data.status  = map_init[1].isid_vlan_data.status;
 235     map[1].isid_vlan_data.vlan    = map_init[1].isid_vlan_data.vlan;
 236     map[1].isid_vlan_data.isid    = map_init[1].isid_vlan_data.isid;
 237
 238     ovs_list_init(&hw->h_lport.p_isid_vlan_maps);
 239     ovs_list_push_back(&hw->h_lport.p_isid_vlan_maps, &map[0].m_entries);
 240     ovs_list_push_back(&hw->h_lport.p_isid_vlan_maps, &map[1].m_entries);
 241
 242     /* Construct LLDPPDU (including Ethernet header) */
 243     eth_compose(&packet, eth_addr_lldp, eth_src, ETH_TYPE_LLDP, 0);
 244     n = lldp_send(lldp->lldpd, hw, &packet);
 245
 246     if (n == 0) {
 247         printf("Error: unable to build packet\n");
 248         return 1;
 249     }
 250
 251     /* Decode the constructed LLDPPDU */
 252     assert(lldp_decode(NULL, dp_packet_data(&packet), dp_packet_size(&packet), hw,
 253                        &nchassis, &nport) != -1);
 254
 255     /* Expecting returned pointers to allocated structures */
 256     if (!nchassis || !nport) {
 257         printf("Error: unable to decode packet");
 258         return 1;
 259     }
 260
 261     /* Verify chassis values */
 262     check_received_chassis(&chassis, nchassis);
 263
 264     /* Verify port values */
 265     check_received_port(&hardware.h_lport, nport);
 266
 267     /* Verify auto attach values */
 268     check_received_aa(&hardware.h_lport, nport, map_init);
 269
 270     lldpd_chassis_cleanup(nchassis, true);
 271     lldpd_port_cleanup(nport, true);
 272     free(nport);
 273     lldp_destroy_dummy(lldp);
 274
 275     return 0;
 276 }
 277
 278
 279 static void
 280 test_aa_main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
 281 {
 282     int num_errors = 0;
 283
 284     /* Make sure we emit valid auto-attach LLDPPDUs */
 285     num_tests++;
 286     num_errors += test_aa_send();
 287
 288     /* Add more tests here */
 289
 290     printf("executed %d tests, %d errors\n", num_tests, num_errors);
 291
 292     exit(num_errors != 0);
 293 }
 294
 295 OVSTEST_REGISTER("test-aa", test_aa_main);