1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2
3 /*
4 * End-to-end eBPF tunnel test suite
5 * The file tests BPF network tunnel implementation.
6 *
7 * Topology:
8 * ---------
9 * root namespace | at_ns0 namespace
10 * |
11 * ----------- | -----------
12 * | tnl dev | | | tnl dev | (overlay network)
13 * ----------- | -----------
14 * metadata-mode | metadata-mode
15 * with bpf | with bpf
16 * |
17 * ---------- | ----------
18 * | veth1 | --------- | veth0 | (underlay network)
19 * ---------- peer ----------
20 *
21 *
22 * Device Configuration
23 * --------------------
24 * root namespace with metadata-mode tunnel + BPF
25 * Device names and addresses:
26 * veth1 IP 1: 172.16.1.200, IPv6: 00::22 (underlay)
27 * IP 2: 172.16.1.20, IPv6: 00::bb (underlay)
28 * tunnel dev <type>11, ex: gre11, IPv4: 10.1.1.200, IPv6: 1::22 (overlay)
29 *
30 * Namespace at_ns0 with native tunnel
31 * Device names and addresses:
32 * veth0 IPv4: 172.16.1.100, IPv6: 00::11 (underlay)
33 * tunnel dev <type>00, ex: gre00, IPv4: 10.1.1.100, IPv6: 1::11 (overlay)
34 *
35 *
36 * End-to-end ping packet flow
37 * ---------------------------
38 * Most of the tests start by namespace creation, device configuration,
39 * then ping the underlay and overlay network. When doing 'ping 10.1.1.100'
40 * from root namespace, the following operations happen:
41 * 1) Route lookup shows 10.1.1.100/24 belongs to tnl dev, fwd to tnl dev.
42 * 2) Tnl device's egress BPF program is triggered and set the tunnel metadata,
43 * with local_ip=172.16.1.200, remote_ip=172.16.1.100. BPF program choose
44 * the primary or secondary ip of veth1 as the local ip of tunnel. The
45 * choice is made based on the value of bpf map local_ip_map.
46 * 3) Outer tunnel header is prepended and route the packet to veth1's egress.
47 * 4) veth0's ingress queue receive the tunneled packet at namespace at_ns0.
48 * 5) Tunnel protocol handler, ex: vxlan_rcv, decap the packet.
49 * 6) Forward the packet to the overlay tnl dev.
50 */
51
52 #include <arpa/inet.h>
53 #include <linux/if_tun.h>
54 #include <linux/limits.h>
55 #include <linux/sysctl.h>
56 #include <linux/time_types.h>
57 #include <linux/net_tstamp.h>
58 #include <net/if.h>
59 #include <stdbool.h>
60 #include <stdio.h>
61 #include <sys/stat.h>
62 #include <unistd.h>
63
64 #include "test_progs.h"
65 #include "network_helpers.h"
66 #include "test_tunnel_kern.skel.h"
67
68 #define IP4_ADDR_VETH0 "172.16.1.100"
69 #define IP4_ADDR1_VETH1 "172.16.1.200"
70 #define IP4_ADDR2_VETH1 "172.16.1.20"
71 #define IP4_ADDR_TUNL_DEV0 "10.1.1.100"
72 #define IP4_ADDR_TUNL_DEV1 "10.1.1.200"
73
74 #define IP6_ADDR_VETH0 "::11"
75 #define IP6_ADDR1_VETH1 "::22"
76 #define IP6_ADDR2_VETH1 "::bb"
77
78 #define IP4_ADDR1_HEX_VETH1 0xac1001c8
79 #define IP4_ADDR2_HEX_VETH1 0xac100114
80 #define IP6_ADDR1_HEX_VETH1 0x22
81 #define IP6_ADDR2_HEX_VETH1 0xbb
82
83 #define MAC_TUNL_DEV0 "52:54:00:d9:01:00"
84 #define MAC_TUNL_DEV1 "52:54:00:d9:02:00"
85 #define MAC_VETH1 "52:54:00:d9:03:00"
86
87 #define VXLAN_TUNL_DEV0 "vxlan00"
88 #define VXLAN_TUNL_DEV1 "vxlan11"
89 #define IP6VXLAN_TUNL_DEV0 "ip6vxlan00"
90 #define IP6VXLAN_TUNL_DEV1 "ip6vxlan11"
91
92 #define IPIP_TUNL_DEV0 "ipip00"
93 #define IPIP_TUNL_DEV1 "ipip11"
94
95 #define PING_ARGS "-i 0.01 -c 3 -w 10 -q"
96
config_device(void)97 static int config_device(void)
98 {
99 SYS(fail, "ip netns add at_ns0");
100 SYS(fail, "ip link add veth0 address " MAC_VETH1 " type veth peer name veth1");
101 SYS(fail, "ip link set veth0 netns at_ns0");
102 SYS(fail, "ip addr add " IP4_ADDR1_VETH1 "/24 dev veth1");
103 SYS(fail, "ip link set dev veth1 up mtu 1500");
104 SYS(fail, "ip netns exec at_ns0 ip addr add " IP4_ADDR_VETH0 "/24 dev veth0");
105 SYS(fail, "ip netns exec at_ns0 ip link set dev veth0 up mtu 1500");
106
107 return 0;
108 fail:
109 return -1;
110 }
111
cleanup(void)112 static void cleanup(void)
113 {
114 SYS_NOFAIL("test -f /var/run/netns/at_ns0 && ip netns delete at_ns0");
115 SYS_NOFAIL("ip link del veth1 2> /dev/null");
116 SYS_NOFAIL("ip link del %s 2> /dev/null", VXLAN_TUNL_DEV1);
117 SYS_NOFAIL("ip link del %s 2> /dev/null", IP6VXLAN_TUNL_DEV1);
118 }
119
add_vxlan_tunnel(void)120 static int add_vxlan_tunnel(void)
121 {
122 /* at_ns0 namespace */
123 SYS(fail, "ip netns exec at_ns0 ip link add dev %s type vxlan external gbp dstport 4789",
124 VXLAN_TUNL_DEV0);
125 SYS(fail, "ip netns exec at_ns0 ip link set dev %s address %s up",
126 VXLAN_TUNL_DEV0, MAC_TUNL_DEV0);
127 SYS(fail, "ip netns exec at_ns0 ip addr add dev %s %s/24",
128 VXLAN_TUNL_DEV0, IP4_ADDR_TUNL_DEV0);
129 SYS(fail, "ip netns exec at_ns0 ip neigh add %s lladdr %s dev %s",
130 IP4_ADDR_TUNL_DEV1, MAC_TUNL_DEV1, VXLAN_TUNL_DEV0);
131 SYS(fail, "ip netns exec at_ns0 ip neigh add %s lladdr %s dev veth0",
132 IP4_ADDR2_VETH1, MAC_VETH1);
133
134 /* root namespace */
135 SYS(fail, "ip link add dev %s type vxlan external gbp dstport 4789",
136 VXLAN_TUNL_DEV1);
137 SYS(fail, "ip link set dev %s address %s up", VXLAN_TUNL_DEV1, MAC_TUNL_DEV1);
138 SYS(fail, "ip addr add dev %s %s/24", VXLAN_TUNL_DEV1, IP4_ADDR_TUNL_DEV1);
139 SYS(fail, "ip neigh add %s lladdr %s dev %s",
140 IP4_ADDR_TUNL_DEV0, MAC_TUNL_DEV0, VXLAN_TUNL_DEV1);
141
142 return 0;
143 fail:
144 return -1;
145 }
146
delete_vxlan_tunnel(void)147 static void delete_vxlan_tunnel(void)
148 {
149 SYS_NOFAIL("ip netns exec at_ns0 ip link delete dev %s",
150 VXLAN_TUNL_DEV0);
151 SYS_NOFAIL("ip link delete dev %s", VXLAN_TUNL_DEV1);
152 }
153
add_ip6vxlan_tunnel(void)154 static int add_ip6vxlan_tunnel(void)
155 {
156 SYS(fail, "ip netns exec at_ns0 ip -6 addr add %s/96 dev veth0",
157 IP6_ADDR_VETH0);
158 SYS(fail, "ip netns exec at_ns0 ip link set dev veth0 up");
159 SYS(fail, "ip -6 addr add %s/96 dev veth1", IP6_ADDR1_VETH1);
160 SYS(fail, "ip -6 addr add %s/96 dev veth1", IP6_ADDR2_VETH1);
161 SYS(fail, "ip link set dev veth1 up");
162
163 /* at_ns0 namespace */
164 SYS(fail, "ip netns exec at_ns0 ip link add dev %s type vxlan external dstport 4789",
165 IP6VXLAN_TUNL_DEV0);
166 SYS(fail, "ip netns exec at_ns0 ip addr add dev %s %s/24",
167 IP6VXLAN_TUNL_DEV0, IP4_ADDR_TUNL_DEV0);
168 SYS(fail, "ip netns exec at_ns0 ip link set dev %s address %s up",
169 IP6VXLAN_TUNL_DEV0, MAC_TUNL_DEV0);
170
171 /* root namespace */
172 SYS(fail, "ip link add dev %s type vxlan external dstport 4789",
173 IP6VXLAN_TUNL_DEV1);
174 SYS(fail, "ip addr add dev %s %s/24", IP6VXLAN_TUNL_DEV1, IP4_ADDR_TUNL_DEV1);
175 SYS(fail, "ip link set dev %s address %s up",
176 IP6VXLAN_TUNL_DEV1, MAC_TUNL_DEV1);
177
178 return 0;
179 fail:
180 return -1;
181 }
182
delete_ip6vxlan_tunnel(void)183 static void delete_ip6vxlan_tunnel(void)
184 {
185 SYS_NOFAIL("ip netns exec at_ns0 ip -6 addr delete %s/96 dev veth0",
186 IP6_ADDR_VETH0);
187 SYS_NOFAIL("ip -6 addr delete %s/96 dev veth1", IP6_ADDR1_VETH1);
188 SYS_NOFAIL("ip -6 addr delete %s/96 dev veth1", IP6_ADDR2_VETH1);
189 SYS_NOFAIL("ip netns exec at_ns0 ip link delete dev %s",
190 IP6VXLAN_TUNL_DEV0);
191 SYS_NOFAIL("ip link delete dev %s", IP6VXLAN_TUNL_DEV1);
192 }
193
194 enum ipip_encap {
195 NONE = 0,
196 FOU = 1,
197 GUE = 2,
198 };
199
set_ipip_encap(const char * ipproto,const char * type)200 static int set_ipip_encap(const char *ipproto, const char *type)
201 {
202 SYS(fail, "ip -n at_ns0 fou add port 5555 %s", ipproto);
203 SYS(fail, "ip -n at_ns0 link set dev %s type ipip encap %s",
204 IPIP_TUNL_DEV0, type);
205 SYS(fail, "ip -n at_ns0 link set dev %s type ipip encap-dport 5555",
206 IPIP_TUNL_DEV0);
207
208 return 0;
209 fail:
210 return -1;
211 }
212
add_ipip_tunnel(enum ipip_encap encap)213 static int add_ipip_tunnel(enum ipip_encap encap)
214 {
215 int err;
216 const char *ipproto, *type;
217
218 switch (encap) {
219 case FOU:
220 ipproto = "ipproto 4";
221 type = "fou";
222 break;
223 case GUE:
224 ipproto = "gue";
225 type = ipproto;
226 break;
227 default:
228 ipproto = NULL;
229 type = ipproto;
230 }
231
232 /* at_ns0 namespace */
233 SYS(fail, "ip -n at_ns0 link add dev %s type ipip local %s remote %s",
234 IPIP_TUNL_DEV0, IP4_ADDR_VETH0, IP4_ADDR1_VETH1);
235
236 if (type && ipproto) {
237 err = set_ipip_encap(ipproto, type);
238 if (!ASSERT_OK(err, "set_ipip_encap"))
239 goto fail;
240 }
241
242 SYS(fail, "ip -n at_ns0 link set dev %s up", IPIP_TUNL_DEV0);
243 SYS(fail, "ip -n at_ns0 addr add dev %s %s/24",
244 IPIP_TUNL_DEV0, IP4_ADDR_TUNL_DEV0);
245
246 /* root namespace */
247 if (type && ipproto)
248 SYS(fail, "ip fou add port 5555 %s", ipproto);
249 SYS(fail, "ip link add dev %s type ipip external", IPIP_TUNL_DEV1);
250 SYS(fail, "ip link set dev %s up", IPIP_TUNL_DEV1);
251 SYS(fail, "ip addr add dev %s %s/24", IPIP_TUNL_DEV1,
252 IP4_ADDR_TUNL_DEV1);
253
254 return 0;
255 fail:
256 return -1;
257 }
258
delete_ipip_tunnel(void)259 static void delete_ipip_tunnel(void)
260 {
261 SYS_NOFAIL("ip -n at_ns0 link delete dev %s", IPIP_TUNL_DEV0);
262 SYS_NOFAIL("ip -n at_ns0 fou del port 5555 2> /dev/null");
263 SYS_NOFAIL("ip link delete dev %s", IPIP_TUNL_DEV1);
264 SYS_NOFAIL("ip fou del port 5555 2> /dev/null");
265 }
266
test_ping(int family,const char * addr)267 static int test_ping(int family, const char *addr)
268 {
269 SYS(fail, "%s %s %s > /dev/null", ping_command(family), PING_ARGS, addr);
270 return 0;
271 fail:
272 return -1;
273 }
274
attach_tc_prog(struct bpf_tc_hook * hook,int igr_fd,int egr_fd)275 static int attach_tc_prog(struct bpf_tc_hook *hook, int igr_fd, int egr_fd)
276 {
277 DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts1, .handle = 1,
278 .priority = 1, .prog_fd = igr_fd);
279 DECLARE_LIBBPF_OPTS(bpf_tc_opts, opts2, .handle = 1,
280 .priority = 1, .prog_fd = egr_fd);
281 int ret;
282
283 ret = bpf_tc_hook_create(hook);
284 if (!ASSERT_OK(ret, "create tc hook"))
285 return ret;
286
287 if (igr_fd >= 0) {
288 hook->attach_point = BPF_TC_INGRESS;
289 ret = bpf_tc_attach(hook, &opts1);
290 if (!ASSERT_OK(ret, "bpf_tc_attach")) {
291 bpf_tc_hook_destroy(hook);
292 return ret;
293 }
294 }
295
296 if (egr_fd >= 0) {
297 hook->attach_point = BPF_TC_EGRESS;
298 ret = bpf_tc_attach(hook, &opts2);
299 if (!ASSERT_OK(ret, "bpf_tc_attach")) {
300 bpf_tc_hook_destroy(hook);
301 return ret;
302 }
303 }
304
305 return 0;
306 }
307
test_vxlan_tunnel(void)308 static void test_vxlan_tunnel(void)
309 {
310 struct test_tunnel_kern *skel = NULL;
311 struct nstoken *nstoken;
312 int local_ip_map_fd = -1;
313 int set_src_prog_fd, get_src_prog_fd;
314 int set_dst_prog_fd;
315 int key = 0, ifindex = -1;
316 uint local_ip;
317 int err;
318 DECLARE_LIBBPF_OPTS(bpf_tc_hook, tc_hook,
319 .attach_point = BPF_TC_INGRESS);
320
321 /* add vxlan tunnel */
322 err = add_vxlan_tunnel();
323 if (!ASSERT_OK(err, "add vxlan tunnel"))
324 goto done;
325
326 /* load and attach bpf prog to tunnel dev tc hook point */
327 skel = test_tunnel_kern__open_and_load();
328 if (!ASSERT_OK_PTR(skel, "test_tunnel_kern__open_and_load"))
329 goto done;
330 ifindex = if_nametoindex(VXLAN_TUNL_DEV1);
331 if (!ASSERT_NEQ(ifindex, 0, "vxlan11 ifindex"))
332 goto done;
333 tc_hook.ifindex = ifindex;
334 get_src_prog_fd = bpf_program__fd(skel->progs.vxlan_get_tunnel_src);
335 set_src_prog_fd = bpf_program__fd(skel->progs.vxlan_set_tunnel_src);
336 if (!ASSERT_GE(get_src_prog_fd, 0, "bpf_program__fd"))
337 goto done;
338 if (!ASSERT_GE(set_src_prog_fd, 0, "bpf_program__fd"))
339 goto done;
340 if (attach_tc_prog(&tc_hook, get_src_prog_fd, set_src_prog_fd))
341 goto done;
342
343 /* load and attach bpf prog to veth dev tc hook point */
344 ifindex = if_nametoindex("veth1");
345 if (!ASSERT_NEQ(ifindex, 0, "veth1 ifindex"))
346 goto done;
347 tc_hook.ifindex = ifindex;
348 set_dst_prog_fd = bpf_program__fd(skel->progs.veth_set_outer_dst);
349 if (!ASSERT_GE(set_dst_prog_fd, 0, "bpf_program__fd"))
350 goto done;
351 if (attach_tc_prog(&tc_hook, set_dst_prog_fd, -1))
352 goto done;
353
354 /* load and attach prog set_md to tunnel dev tc hook point at_ns0 */
355 nstoken = open_netns("at_ns0");
356 if (!ASSERT_OK_PTR(nstoken, "setns src"))
357 goto done;
358 ifindex = if_nametoindex(VXLAN_TUNL_DEV0);
359 if (!ASSERT_NEQ(ifindex, 0, "vxlan00 ifindex"))
360 goto done;
361 tc_hook.ifindex = ifindex;
362 set_dst_prog_fd = bpf_program__fd(skel->progs.vxlan_set_tunnel_dst);
363 if (!ASSERT_GE(set_dst_prog_fd, 0, "bpf_program__fd"))
364 goto done;
365 if (attach_tc_prog(&tc_hook, -1, set_dst_prog_fd))
366 goto done;
367 close_netns(nstoken);
368
369 /* use veth1 ip 2 as tunnel source ip */
370 local_ip_map_fd = bpf_map__fd(skel->maps.local_ip_map);
371 if (!ASSERT_GE(local_ip_map_fd, 0, "bpf_map__fd"))
372 goto done;
373 local_ip = IP4_ADDR2_HEX_VETH1;
374 err = bpf_map_update_elem(local_ip_map_fd, &key, &local_ip, BPF_ANY);
375 if (!ASSERT_OK(err, "update bpf local_ip_map"))
376 goto done;
377
378 /* ping test */
379 err = test_ping(AF_INET, IP4_ADDR_TUNL_DEV0);
380 if (!ASSERT_OK(err, "test_ping"))
381 goto done;
382
383 done:
384 /* delete vxlan tunnel */
385 delete_vxlan_tunnel();
386 if (local_ip_map_fd >= 0)
387 close(local_ip_map_fd);
388 if (skel)
389 test_tunnel_kern__destroy(skel);
390 }
391
test_ip6vxlan_tunnel(void)392 static void test_ip6vxlan_tunnel(void)
393 {
394 struct test_tunnel_kern *skel = NULL;
395 struct nstoken *nstoken;
396 int local_ip_map_fd = -1;
397 int set_src_prog_fd, get_src_prog_fd;
398 int set_dst_prog_fd;
399 int key = 0, ifindex = -1;
400 uint local_ip;
401 int err;
402 DECLARE_LIBBPF_OPTS(bpf_tc_hook, tc_hook,
403 .attach_point = BPF_TC_INGRESS);
404
405 /* add vxlan tunnel */
406 err = add_ip6vxlan_tunnel();
407 if (!ASSERT_OK(err, "add_ip6vxlan_tunnel"))
408 goto done;
409
410 /* load and attach bpf prog to tunnel dev tc hook point */
411 skel = test_tunnel_kern__open_and_load();
412 if (!ASSERT_OK_PTR(skel, "test_tunnel_kern__open_and_load"))
413 goto done;
414 ifindex = if_nametoindex(IP6VXLAN_TUNL_DEV1);
415 if (!ASSERT_NEQ(ifindex, 0, "ip6vxlan11 ifindex"))
416 goto done;
417 tc_hook.ifindex = ifindex;
418 get_src_prog_fd = bpf_program__fd(skel->progs.ip6vxlan_get_tunnel_src);
419 set_src_prog_fd = bpf_program__fd(skel->progs.ip6vxlan_set_tunnel_src);
420 if (!ASSERT_GE(set_src_prog_fd, 0, "bpf_program__fd"))
421 goto done;
422 if (!ASSERT_GE(get_src_prog_fd, 0, "bpf_program__fd"))
423 goto done;
424 if (attach_tc_prog(&tc_hook, get_src_prog_fd, set_src_prog_fd))
425 goto done;
426
427 /* load and attach prog set_md to tunnel dev tc hook point at_ns0 */
428 nstoken = open_netns("at_ns0");
429 if (!ASSERT_OK_PTR(nstoken, "setns src"))
430 goto done;
431 ifindex = if_nametoindex(IP6VXLAN_TUNL_DEV0);
432 if (!ASSERT_NEQ(ifindex, 0, "ip6vxlan00 ifindex"))
433 goto done;
434 tc_hook.ifindex = ifindex;
435 set_dst_prog_fd = bpf_program__fd(skel->progs.ip6vxlan_set_tunnel_dst);
436 if (!ASSERT_GE(set_dst_prog_fd, 0, "bpf_program__fd"))
437 goto done;
438 if (attach_tc_prog(&tc_hook, -1, set_dst_prog_fd))
439 goto done;
440 close_netns(nstoken);
441
442 /* use veth1 ip 2 as tunnel source ip */
443 local_ip_map_fd = bpf_map__fd(skel->maps.local_ip_map);
444 if (!ASSERT_GE(local_ip_map_fd, 0, "get local_ip_map fd"))
445 goto done;
446 local_ip = IP6_ADDR2_HEX_VETH1;
447 err = bpf_map_update_elem(local_ip_map_fd, &key, &local_ip, BPF_ANY);
448 if (!ASSERT_OK(err, "update bpf local_ip_map"))
449 goto done;
450
451 /* ping test */
452 err = test_ping(AF_INET, IP4_ADDR_TUNL_DEV0);
453 if (!ASSERT_OK(err, "test_ping"))
454 goto done;
455
456 done:
457 /* delete ipv6 vxlan tunnel */
458 delete_ip6vxlan_tunnel();
459 if (local_ip_map_fd >= 0)
460 close(local_ip_map_fd);
461 if (skel)
462 test_tunnel_kern__destroy(skel);
463 }
464
test_ipip_tunnel(enum ipip_encap encap)465 static void test_ipip_tunnel(enum ipip_encap encap)
466 {
467 struct test_tunnel_kern *skel = NULL;
468 struct nstoken *nstoken;
469 int set_src_prog_fd, get_src_prog_fd;
470 int ifindex = -1;
471 int err;
472 DECLARE_LIBBPF_OPTS(bpf_tc_hook, tc_hook,
473 .attach_point = BPF_TC_INGRESS);
474
475 /* add ipip tunnel */
476 err = add_ipip_tunnel(encap);
477 if (!ASSERT_OK(err, "add_ipip_tunnel"))
478 goto done;
479
480 /* load and attach bpf prog to tunnel dev tc hook point */
481 skel = test_tunnel_kern__open_and_load();
482 if (!ASSERT_OK_PTR(skel, "test_tunnel_kern__open_and_load"))
483 goto done;
484 ifindex = if_nametoindex(IPIP_TUNL_DEV1);
485 if (!ASSERT_NEQ(ifindex, 0, "ipip11 ifindex"))
486 goto done;
487 tc_hook.ifindex = ifindex;
488
489 switch (encap) {
490 case FOU:
491 get_src_prog_fd = bpf_program__fd(
492 skel->progs.ipip_encap_get_tunnel);
493 set_src_prog_fd = bpf_program__fd(
494 skel->progs.ipip_fou_set_tunnel);
495 break;
496 case GUE:
497 get_src_prog_fd = bpf_program__fd(
498 skel->progs.ipip_encap_get_tunnel);
499 set_src_prog_fd = bpf_program__fd(
500 skel->progs.ipip_gue_set_tunnel);
501 break;
502 default:
503 get_src_prog_fd = bpf_program__fd(
504 skel->progs.ipip_get_tunnel);
505 set_src_prog_fd = bpf_program__fd(
506 skel->progs.ipip_set_tunnel);
507 }
508
509 if (!ASSERT_GE(set_src_prog_fd, 0, "bpf_program__fd"))
510 goto done;
511 if (!ASSERT_GE(get_src_prog_fd, 0, "bpf_program__fd"))
512 goto done;
513 if (attach_tc_prog(&tc_hook, get_src_prog_fd, set_src_prog_fd))
514 goto done;
515
516 /* ping from root namespace test */
517 err = test_ping(AF_INET, IP4_ADDR_TUNL_DEV0);
518 if (!ASSERT_OK(err, "test_ping"))
519 goto done;
520
521 /* ping from at_ns0 namespace test */
522 nstoken = open_netns("at_ns0");
523 err = test_ping(AF_INET, IP4_ADDR_TUNL_DEV1);
524 if (!ASSERT_OK(err, "test_ping"))
525 goto done;
526 close_netns(nstoken);
527
528 done:
529 /* delete ipip tunnel */
530 delete_ipip_tunnel();
531 if (skel)
532 test_tunnel_kern__destroy(skel);
533 }
534
535 #define RUN_TEST(name, ...) \
536 ({ \
537 if (test__start_subtest(#name)) { \
538 test_ ## name(__VA_ARGS__); \
539 } \
540 })
541
test_tunnel_run_tests(void * arg)542 static void *test_tunnel_run_tests(void *arg)
543 {
544 cleanup();
545 config_device();
546
547 RUN_TEST(vxlan_tunnel);
548 RUN_TEST(ip6vxlan_tunnel);
549 RUN_TEST(ipip_tunnel, NONE);
550 RUN_TEST(ipip_tunnel, FOU);
551 RUN_TEST(ipip_tunnel, GUE);
552
553 cleanup();
554
555 return NULL;
556 }
557
test_tunnel(void)558 void test_tunnel(void)
559 {
560 pthread_t test_thread;
561 int err;
562
563 /* Run the tests in their own thread to isolate the namespace changes
564 * so they do not affect the environment of other tests.
565 * (specifically needed because of unshare(CLONE_NEWNS) in open_netns())
566 */
567 err = pthread_create(&test_thread, NULL, &test_tunnel_run_tests, NULL);
568 if (ASSERT_OK(err, "pthread_create"))
569 ASSERT_OK(pthread_join(test_thread, NULL), "pthread_join");
570 }
571