1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd.
5 Copyright (C) 2014 Tom Gundersen
6 Copyright (C) 2014 Susant Sahani
11 #include <net/ethernet.h>
19 #include "alloc-util.h"
21 #include "lldp-network.h"
23 #include "string-util.h"
25 #define TEST_LLDP_PORT "em1"
26 #define TEST_LLDP_TYPE_SYSTEM_NAME "systemd-lldp"
27 #define TEST_LLDP_TYPE_SYSTEM_DESC "systemd-lldp-desc"
29 static int test_fd
[2] = { -1, -1 };
30 static int lldp_handler_calls
;
32 int lldp_network_bind_raw_socket(int ifindex
) {
33 if (socketpair(AF_UNIX
, SOCK_DGRAM
| SOCK_NONBLOCK
, 0, test_fd
) < 0)
39 static void lldp_handler(sd_lldp
*lldp
, sd_lldp_event event
, sd_lldp_neighbor
*n
, void *userdata
) {
43 static int start_lldp(sd_lldp
**lldp
, sd_event
*e
, sd_lldp_callback_t cb
, void *cb_data
) {
46 r
= sd_lldp_new(lldp
);
50 r
= sd_lldp_set_ifindex(*lldp
, 42);
54 r
= sd_lldp_set_callback(*lldp
, cb
, cb_data
);
58 r
= sd_lldp_attach_event(*lldp
, e
, 0);
62 r
= sd_lldp_start(*lldp
);
69 static int stop_lldp(sd_lldp
*lldp
) {
72 r
= sd_lldp_stop(lldp
);
76 r
= sd_lldp_detach_event(lldp
);
81 safe_close(test_fd
[1]);
86 static void test_receive_basic_packet(sd_event
*e
) {
88 static const uint8_t frame
[] = {
90 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */
91 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */
92 0x88, 0xcc, /* Ethertype */
93 /* LLDP mandatory TLVs */
94 0x02, 0x07, 0x04, 0x00, 0x01, 0x02, /* Chassis: MAC, 00:01:02:03:04:05 */
96 0x04, 0x04, 0x05, 0x31, 0x2f, 0x33, /* Port: interface name, "1/3" */
97 0x06, 0x02, 0x00, 0x78, /* TTL: 120 seconds */
98 /* LLDP optional TLVs */
99 0x08, 0x04, 0x50, 0x6f, 0x72, 0x74, /* Port Description: "Port" */
100 0x0a, 0x03, 0x53, 0x59, 0x53, /* System Name: "SYS" */
101 0x0c, 0x04, 0x66, 0x6f, 0x6f, 0x00, /* System Description: "foo" (NULL-terminated) */
102 0x00, 0x00 /* End Of LLDPDU */
106 sd_lldp_neighbor
**neighbors
;
113 lldp_handler_calls
= 0;
114 assert_se(start_lldp(&lldp
, e
, lldp_handler
, NULL
) == 0);
116 assert_se(write(test_fd
[1], frame
, sizeof(frame
)) == sizeof(frame
));
118 assert_se(lldp_handler_calls
== 1);
119 assert_se(sd_lldp_get_neighbors(lldp
, &neighbors
) == 1);
121 assert_se(sd_lldp_neighbor_get_chassis_id(neighbors
[0], &type
, &data
, &length
) == 0);
122 assert_se(type
== SD_LLDP_CHASSIS_SUBTYPE_MAC_ADDRESS
);
123 assert_se(length
== ETH_ALEN
);
124 assert_se(!memcmp(data
, "\x00\x01\x02\x03\x04\x05", ETH_ALEN
));
126 assert_se(sd_lldp_neighbor_get_port_id(neighbors
[0], &type
, &data
, &length
) == 0);
127 assert_se(type
== SD_LLDP_PORT_SUBTYPE_INTERFACE_NAME
);
128 assert_se(length
== 3);
129 assert_se(!memcmp(data
, "1/3", 3));
131 assert_se(sd_lldp_neighbor_get_port_description(neighbors
[0], &str
) == 0);
132 assert_se(streq(str
, "Port"));
134 assert_se(sd_lldp_neighbor_get_system_name(neighbors
[0], &str
) == 0);
135 assert_se(streq(str
, "SYS"));
137 assert_se(sd_lldp_neighbor_get_system_description(neighbors
[0], &str
) == 0);
138 assert_se(streq(str
, "foo"));
140 assert_se(sd_lldp_neighbor_get_ttl(neighbors
[0], &ttl
) == 0);
141 assert_se(ttl
== 120);
143 sd_lldp_neighbor_unref(neighbors
[0]);
146 assert_se(stop_lldp(lldp
) == 0);
149 static void test_receive_incomplete_packet(sd_event
*e
) {
151 sd_lldp_neighbor
**neighbors
;
153 /* Ethernet header */
154 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */
155 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */
156 0x88, 0xcc, /* Ethertype */
157 /* LLDP mandatory TLVs */
158 0x02, 0x07, 0x04, 0x00, 0x01, 0x02, /* Chassis: MAC, 00:01:02:03:04:05 */
160 0x04, 0x04, 0x05, 0x31, 0x2f, 0x33, /* Port: interface name, "1/3" */
162 0x00, 0x00 /* End Of LLDPDU */
165 lldp_handler_calls
= 0;
166 assert_se(start_lldp(&lldp
, e
, lldp_handler
, NULL
) == 0);
168 assert_se(write(test_fd
[1], frame
, sizeof(frame
)) == sizeof(frame
));
170 assert_se(lldp_handler_calls
== 0);
171 assert_se(sd_lldp_get_neighbors(lldp
, &neighbors
) == 0);
173 assert_se(stop_lldp(lldp
) == 0);
176 static void test_receive_oui_packet(sd_event
*e
) {
178 sd_lldp_neighbor
**neighbors
;
180 /* Ethernet header */
181 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */
182 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */
183 0x88, 0xcc, /* Ethertype */
184 /* LLDP mandatory TLVs */
185 0x02, 0x07, 0x04, 0x00, 0x01, 0x02, /* Chassis: MAC, 00:01:02:03:04:05 */
187 0x04, 0x04, 0x05, 0x31, 0x2f, 0x33, /* Port TLV: interface name, "1/3" */
188 0x06, 0x02, 0x00, 0x78, /* TTL: 120 seconds */
189 /* LLDP optional TLVs */
190 0xfe, 0x06, 0x00, 0x80, 0xc2, 0x01, /* Port VLAN ID: 0x1234 */
192 0xfe, 0x07, 0x00, 0x80, 0xc2, 0x02, /* Port and protocol: flag 1, PPVID 0x7788 */
194 0xfe, 0x0d, 0x00, 0x80, 0xc2, 0x03, /* VLAN Name: ID 0x1234, name "Vlan51" */
195 0x12, 0x34, 0x06, 0x56, 0x6c, 0x61,
197 0xfe, 0x06, 0x00, 0x80, 0xc2, 0x06, /* Management VID: 0x0102 */
199 0xfe, 0x09, 0x00, 0x80, 0xc2, 0x07, /* Link aggregation: status 1, ID 0x00140012 */
200 0x01, 0x00, 0x14, 0x00, 0x12,
201 0x00, 0x00 /* End of LLDPDU */
204 lldp_handler_calls
= 0;
205 assert_se(start_lldp(&lldp
, e
, lldp_handler
, NULL
) == 0);
207 assert_se(write(test_fd
[1], frame
, sizeof(frame
)) == sizeof(frame
));
209 assert_se(lldp_handler_calls
== 1);
210 assert_se(sd_lldp_get_neighbors(lldp
, &neighbors
) == 1);
212 assert_se(sd_lldp_neighbor_tlv_rewind(neighbors
[0]) >= 0);
213 assert_se(sd_lldp_neighbor_tlv_is_type(neighbors
[0], SD_LLDP_TYPE_CHASSIS_ID
) > 0);
214 assert_se(sd_lldp_neighbor_tlv_next(neighbors
[0]) > 0);
215 assert_se(sd_lldp_neighbor_tlv_is_type(neighbors
[0], SD_LLDP_TYPE_PORT_ID
) > 0);
216 assert_se(sd_lldp_neighbor_tlv_next(neighbors
[0]) > 0);
217 assert_se(sd_lldp_neighbor_tlv_is_type(neighbors
[0], SD_LLDP_TYPE_TTL
) > 0);
218 assert_se(sd_lldp_neighbor_tlv_next(neighbors
[0]) > 0);
219 assert_se(sd_lldp_neighbor_tlv_is_oui(neighbors
[0], SD_LLDP_OUI_802_1
, SD_LLDP_OUI_802_1_SUBTYPE_PORT_VLAN_ID
) > 0);
220 assert_se(sd_lldp_neighbor_tlv_next(neighbors
[0]) > 0);
221 assert_se(sd_lldp_neighbor_tlv_is_oui(neighbors
[0], SD_LLDP_OUI_802_1
, SD_LLDP_OUI_802_1_SUBTYPE_PORT_PROTOCOL_VLAN_ID
) > 0);
222 assert_se(sd_lldp_neighbor_tlv_next(neighbors
[0]) > 0);
223 assert_se(sd_lldp_neighbor_tlv_is_oui(neighbors
[0], SD_LLDP_OUI_802_1
, SD_LLDP_OUI_802_1_SUBTYPE_VLAN_NAME
) > 0);
224 assert_se(sd_lldp_neighbor_tlv_next(neighbors
[0]) > 0);
225 assert_se(sd_lldp_neighbor_tlv_is_oui(neighbors
[0], SD_LLDP_OUI_802_1
, SD_LLDP_OUI_802_1_SUBTYPE_MANAGEMENT_VID
) > 0);
226 assert_se(sd_lldp_neighbor_tlv_next(neighbors
[0]) > 0);
227 assert_se(sd_lldp_neighbor_tlv_is_oui(neighbors
[0], SD_LLDP_OUI_802_1
, SD_LLDP_OUI_802_1_SUBTYPE_LINK_AGGREGATION
) > 0);
228 assert_se(sd_lldp_neighbor_tlv_next(neighbors
[0]) > 0);
229 assert_se(sd_lldp_neighbor_tlv_is_type(neighbors
[0], SD_LLDP_TYPE_END
) > 0);
230 assert_se(sd_lldp_neighbor_tlv_next(neighbors
[0]) == 0);
232 sd_lldp_neighbor_unref(neighbors
[0]);
235 assert_se(stop_lldp(lldp
) == 0);
238 int main(int argc
, char *argv
[]) {
239 _cleanup_(sd_event_unrefp
) sd_event
*e
= NULL
;
241 log_set_max_level(LOG_DEBUG
);
243 /* LLDP reception tests */
244 assert_se(sd_event_new(&e
) == 0);
245 test_receive_basic_packet(e
);
246 test_receive_incomplete_packet(e
);
247 test_receive_oui_packet(e
);