1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * ipsec.c - Check xfrm on veth inside a net-ns. |
4 | * Copyright (c) 2018 Dmitry Safonov |
5 | */ |
6 | |
7 | #define _GNU_SOURCE |
8 | |
9 | #include <arpa/inet.h> |
10 | #include <asm/types.h> |
11 | #include <errno.h> |
12 | #include <fcntl.h> |
13 | #include <limits.h> |
14 | #include <linux/limits.h> |
15 | #include <linux/netlink.h> |
16 | #include <linux/random.h> |
17 | #include <linux/rtnetlink.h> |
18 | #include <linux/veth.h> |
19 | #include <linux/xfrm.h> |
20 | #include <netinet/in.h> |
21 | #include <net/if.h> |
22 | #include <sched.h> |
23 | #include <stdbool.h> |
24 | #include <stdint.h> |
25 | #include <stdio.h> |
26 | #include <stdlib.h> |
27 | #include <string.h> |
28 | #include <sys/mman.h> |
29 | #include <sys/socket.h> |
30 | #include <sys/stat.h> |
31 | #include <sys/syscall.h> |
32 | #include <sys/types.h> |
33 | #include <sys/wait.h> |
34 | #include <time.h> |
35 | #include <unistd.h> |
36 | |
37 | #include "../kselftest.h" |
38 | |
39 | #define printk(fmt, ...) \ |
40 | ksft_print_msg("%d[%u] " fmt "\n", getpid(), __LINE__, ##__VA_ARGS__) |
41 | |
42 | #define pr_err(fmt, ...) printk(fmt ": %m", ##__VA_ARGS__) |
43 | |
44 | #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) |
45 | |
46 | #define IPV4_STR_SZ 16 /* xxx.xxx.xxx.xxx is longest + \0 */ |
47 | #define MAX_PAYLOAD 2048 |
48 | #define XFRM_ALGO_KEY_BUF_SIZE 512 |
49 | #define MAX_PROCESSES (1 << 14) /* /16 mask divided by /30 subnets */ |
50 | #define INADDR_A ((in_addr_t) 0x0a000000) /* 10.0.0.0 */ |
51 | #define INADDR_B ((in_addr_t) 0xc0a80000) /* 192.168.0.0 */ |
52 | |
53 | /* /30 mask for one veth connection */ |
54 | #define PREFIX_LEN 30 |
55 | #define child_ip(nr) (4*nr + 1) |
56 | #define grchild_ip(nr) (4*nr + 2) |
57 | |
58 | #define VETH_FMT "ktst-%d" |
59 | #define VETH_LEN 12 |
60 | |
61 | #define XFRM_ALGO_NR_KEYS 29 |
62 | |
63 | static int nsfd_parent = -1; |
64 | static int nsfd_childa = -1; |
65 | static int nsfd_childb = -1; |
66 | static long page_size; |
67 | |
68 | /* |
69 | * ksft_cnt is static in kselftest, so isn't shared with children. |
70 | * We have to send a test result back to parent and count there. |
71 | * results_fd is a pipe with test feedback from children. |
72 | */ |
73 | static int results_fd[2]; |
74 | |
75 | const unsigned int ping_delay_nsec = 50 * 1000 * 1000; |
76 | const unsigned int ping_timeout = 300; |
77 | const unsigned int ping_count = 100; |
78 | const unsigned int ping_success = 80; |
79 | |
80 | struct xfrm_key_entry { |
81 | char algo_name[35]; |
82 | int key_len; |
83 | }; |
84 | |
85 | struct xfrm_key_entry xfrm_key_entries[] = { |
86 | {"digest_null" , 0}, |
87 | {"ecb(cipher_null)" , 0}, |
88 | {"cbc(des)" , 64}, |
89 | {"hmac(md5)" , 128}, |
90 | {"cmac(aes)" , 128}, |
91 | {"xcbc(aes)" , 128}, |
92 | {"cbc(cast5)" , 128}, |
93 | {"cbc(serpent)" , 128}, |
94 | {"hmac(sha1)" , 160}, |
95 | {"hmac(rmd160)" , 160}, |
96 | {"cbc(des3_ede)" , 192}, |
97 | {"hmac(sha256)" , 256}, |
98 | {"cbc(aes)" , 256}, |
99 | {"cbc(camellia)" , 256}, |
100 | {"cbc(twofish)" , 256}, |
101 | {"rfc3686(ctr(aes))" , 288}, |
102 | {"hmac(sha384)" , 384}, |
103 | {"cbc(blowfish)" , 448}, |
104 | {"hmac(sha512)" , 512}, |
105 | {"rfc4106(gcm(aes))-128" , 160}, |
106 | {"rfc4543(gcm(aes))-128" , 160}, |
107 | {"rfc4309(ccm(aes))-128" , 152}, |
108 | {"rfc4106(gcm(aes))-192" , 224}, |
109 | {"rfc4543(gcm(aes))-192" , 224}, |
110 | {"rfc4309(ccm(aes))-192" , 216}, |
111 | {"rfc4106(gcm(aes))-256" , 288}, |
112 | {"rfc4543(gcm(aes))-256" , 288}, |
113 | {"rfc4309(ccm(aes))-256" , 280}, |
114 | {"rfc7539(chacha20,poly1305)-128" , 0} |
115 | }; |
116 | |
117 | static void randomize_buffer(void *buf, size_t buflen) |
118 | { |
119 | int *p = (int *)buf; |
120 | size_t words = buflen / sizeof(int); |
121 | size_t leftover = buflen % sizeof(int); |
122 | |
123 | if (!buflen) |
124 | return; |
125 | |
126 | while (words--) |
127 | *p++ = rand(); |
128 | |
129 | if (leftover) { |
130 | int tmp = rand(); |
131 | |
132 | memcpy(buf + buflen - leftover, &tmp, leftover); |
133 | } |
134 | |
135 | return; |
136 | } |
137 | |
138 | static int unshare_open(void) |
139 | { |
140 | const char *netns_path = "/proc/self/ns/net" ; |
141 | int fd; |
142 | |
143 | if (unshare(CLONE_NEWNET) != 0) { |
144 | pr_err("unshare()" ); |
145 | return -1; |
146 | } |
147 | |
148 | fd = open(netns_path, O_RDONLY); |
149 | if (fd <= 0) { |
150 | pr_err("open(%s)" , netns_path); |
151 | return -1; |
152 | } |
153 | |
154 | return fd; |
155 | } |
156 | |
157 | static int switch_ns(int fd) |
158 | { |
159 | if (setns(fd, CLONE_NEWNET)) { |
160 | pr_err("setns()" ); |
161 | return -1; |
162 | } |
163 | return 0; |
164 | } |
165 | |
166 | /* |
167 | * Running the test inside a new parent net namespace to bother less |
168 | * about cleanup on error-path. |
169 | */ |
170 | static int init_namespaces(void) |
171 | { |
172 | nsfd_parent = unshare_open(); |
173 | if (nsfd_parent <= 0) |
174 | return -1; |
175 | |
176 | nsfd_childa = unshare_open(); |
177 | if (nsfd_childa <= 0) |
178 | return -1; |
179 | |
180 | if (switch_ns(fd: nsfd_parent)) |
181 | return -1; |
182 | |
183 | nsfd_childb = unshare_open(); |
184 | if (nsfd_childb <= 0) |
185 | return -1; |
186 | |
187 | if (switch_ns(fd: nsfd_parent)) |
188 | return -1; |
189 | return 0; |
190 | } |
191 | |
192 | static int netlink_sock(int *sock, uint32_t *seq_nr, int proto) |
193 | { |
194 | if (*sock > 0) { |
195 | seq_nr++; |
196 | return 0; |
197 | } |
198 | |
199 | *sock = socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, proto); |
200 | if (*sock <= 0) { |
201 | pr_err("socket(AF_NETLINK)" ); |
202 | return -1; |
203 | } |
204 | |
205 | randomize_buffer(buf: seq_nr, buflen: sizeof(*seq_nr)); |
206 | |
207 | return 0; |
208 | } |
209 | |
210 | static inline struct rtattr *rtattr_hdr(struct nlmsghdr *nh) |
211 | { |
212 | return (struct rtattr *)((char *)(nh) + RTA_ALIGN((nh)->nlmsg_len)); |
213 | } |
214 | |
215 | static int rtattr_pack(struct nlmsghdr *nh, size_t req_sz, |
216 | unsigned short rta_type, const void *payload, size_t size) |
217 | { |
218 | /* NLMSG_ALIGNTO == RTA_ALIGNTO, nlmsg_len already aligned */ |
219 | struct rtattr *attr = rtattr_hdr(nh); |
220 | size_t nl_size = RTA_ALIGN(nh->nlmsg_len) + RTA_LENGTH(size); |
221 | |
222 | if (req_sz < nl_size) { |
223 | printk("req buf is too small: %zu < %zu" , req_sz, nl_size); |
224 | return -1; |
225 | } |
226 | nh->nlmsg_len = nl_size; |
227 | |
228 | attr->rta_len = RTA_LENGTH(size); |
229 | attr->rta_type = rta_type; |
230 | memcpy(RTA_DATA(attr), payload, size); |
231 | |
232 | return 0; |
233 | } |
234 | |
235 | static struct rtattr *_rtattr_begin(struct nlmsghdr *nh, size_t req_sz, |
236 | unsigned short rta_type, const void *payload, size_t size) |
237 | { |
238 | struct rtattr *ret = rtattr_hdr(nh); |
239 | |
240 | if (rtattr_pack(nh, req_sz, rta_type, payload, size)) |
241 | return 0; |
242 | |
243 | return ret; |
244 | } |
245 | |
246 | static inline struct rtattr *rtattr_begin(struct nlmsghdr *nh, size_t req_sz, |
247 | unsigned short rta_type) |
248 | { |
249 | return _rtattr_begin(nh, req_sz, rta_type, payload: 0, size: 0); |
250 | } |
251 | |
252 | static inline void rtattr_end(struct nlmsghdr *nh, struct rtattr *attr) |
253 | { |
254 | char *nlmsg_end = (char *)nh + nh->nlmsg_len; |
255 | |
256 | attr->rta_len = nlmsg_end - (char *)attr; |
257 | } |
258 | |
259 | static int veth_pack_peerb(struct nlmsghdr *nh, size_t req_sz, |
260 | const char *peer, int ns) |
261 | { |
262 | struct ifinfomsg pi; |
263 | struct rtattr *peer_attr; |
264 | |
265 | memset(&pi, 0, sizeof(pi)); |
266 | pi.ifi_family = AF_UNSPEC; |
267 | pi.ifi_change = 0xFFFFFFFF; |
268 | |
269 | peer_attr = _rtattr_begin(nh, req_sz, rta_type: VETH_INFO_PEER, payload: &pi, size: sizeof(pi)); |
270 | if (!peer_attr) |
271 | return -1; |
272 | |
273 | if (rtattr_pack(nh, req_sz, rta_type: IFLA_IFNAME, payload: peer, strlen(peer))) |
274 | return -1; |
275 | |
276 | if (rtattr_pack(nh, req_sz, rta_type: IFLA_NET_NS_FD, payload: &ns, size: sizeof(ns))) |
277 | return -1; |
278 | |
279 | rtattr_end(nh, attr: peer_attr); |
280 | |
281 | return 0; |
282 | } |
283 | |
284 | static int netlink_check_answer(int sock) |
285 | { |
286 | struct nlmsgerror { |
287 | struct nlmsghdr hdr; |
288 | int error; |
289 | struct nlmsghdr orig_msg; |
290 | } answer; |
291 | |
292 | if (recv(sock, &answer, sizeof(answer), 0) < 0) { |
293 | pr_err("recv()" ); |
294 | return -1; |
295 | } else if (answer.hdr.nlmsg_type != NLMSG_ERROR) { |
296 | printk("expected NLMSG_ERROR, got %d" , (int)answer.hdr.nlmsg_type); |
297 | return -1; |
298 | } else if (answer.error) { |
299 | printk("NLMSG_ERROR: %d: %s" , |
300 | answer.error, strerror(-answer.error)); |
301 | return answer.error; |
302 | } |
303 | |
304 | return 0; |
305 | } |
306 | |
307 | static int veth_add(int sock, uint32_t seq, const char *peera, int ns_a, |
308 | const char *peerb, int ns_b) |
309 | { |
310 | uint16_t flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_EXCL | NLM_F_CREATE; |
311 | struct { |
312 | struct nlmsghdr nh; |
313 | struct ifinfomsg info; |
314 | char attrbuf[MAX_PAYLOAD]; |
315 | } req; |
316 | const char veth_type[] = "veth" ; |
317 | struct rtattr *link_info, *info_data; |
318 | |
319 | memset(&req, 0, sizeof(req)); |
320 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.info)); |
321 | req.nh.nlmsg_type = RTM_NEWLINK; |
322 | req.nh.nlmsg_flags = flags; |
323 | req.nh.nlmsg_seq = seq; |
324 | req.info.ifi_family = AF_UNSPEC; |
325 | req.info.ifi_change = 0xFFFFFFFF; |
326 | |
327 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: IFLA_IFNAME, payload: peera, strlen(peera))) |
328 | return -1; |
329 | |
330 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: IFLA_NET_NS_FD, payload: &ns_a, size: sizeof(ns_a))) |
331 | return -1; |
332 | |
333 | link_info = rtattr_begin(nh: &req.nh, req_sz: sizeof(req), IFLA_LINKINFO); |
334 | if (!link_info) |
335 | return -1; |
336 | |
337 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: IFLA_INFO_KIND, payload: veth_type, size: sizeof(veth_type))) |
338 | return -1; |
339 | |
340 | info_data = rtattr_begin(nh: &req.nh, req_sz: sizeof(req), rta_type: IFLA_INFO_DATA); |
341 | if (!info_data) |
342 | return -1; |
343 | |
344 | if (veth_pack_peerb(nh: &req.nh, req_sz: sizeof(req), peer: peerb, ns: ns_b)) |
345 | return -1; |
346 | |
347 | rtattr_end(nh: &req.nh, attr: info_data); |
348 | rtattr_end(nh: &req.nh, attr: link_info); |
349 | |
350 | if (send(sock, &req, req.nh.nlmsg_len, 0) < 0) { |
351 | pr_err("send()" ); |
352 | return -1; |
353 | } |
354 | return netlink_check_answer(sock); |
355 | } |
356 | |
357 | static int ip4_addr_set(int sock, uint32_t seq, const char *intf, |
358 | struct in_addr addr, uint8_t prefix) |
359 | { |
360 | uint16_t flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_EXCL | NLM_F_CREATE; |
361 | struct { |
362 | struct nlmsghdr nh; |
363 | struct ifaddrmsg info; |
364 | char attrbuf[MAX_PAYLOAD]; |
365 | } req; |
366 | |
367 | memset(&req, 0, sizeof(req)); |
368 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.info)); |
369 | req.nh.nlmsg_type = RTM_NEWADDR; |
370 | req.nh.nlmsg_flags = flags; |
371 | req.nh.nlmsg_seq = seq; |
372 | req.info.ifa_family = AF_INET; |
373 | req.info.ifa_prefixlen = prefix; |
374 | req.info.ifa_index = if_nametoindex(intf); |
375 | |
376 | #ifdef DEBUG |
377 | { |
378 | char addr_str[IPV4_STR_SZ] = {}; |
379 | |
380 | strncpy(addr_str, inet_ntoa(addr), IPV4_STR_SZ - 1); |
381 | |
382 | printk("ip addr set %s" , addr_str); |
383 | } |
384 | #endif |
385 | |
386 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: IFA_LOCAL, payload: &addr, size: sizeof(addr))) |
387 | return -1; |
388 | |
389 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: IFA_ADDRESS, payload: &addr, size: sizeof(addr))) |
390 | return -1; |
391 | |
392 | if (send(sock, &req, req.nh.nlmsg_len, 0) < 0) { |
393 | pr_err("send()" ); |
394 | return -1; |
395 | } |
396 | return netlink_check_answer(sock); |
397 | } |
398 | |
399 | static int link_set_up(int sock, uint32_t seq, const char *intf) |
400 | { |
401 | struct { |
402 | struct nlmsghdr nh; |
403 | struct ifinfomsg info; |
404 | char attrbuf[MAX_PAYLOAD]; |
405 | } req; |
406 | |
407 | memset(&req, 0, sizeof(req)); |
408 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.info)); |
409 | req.nh.nlmsg_type = RTM_NEWLINK; |
410 | req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; |
411 | req.nh.nlmsg_seq = seq; |
412 | req.info.ifi_family = AF_UNSPEC; |
413 | req.info.ifi_change = 0xFFFFFFFF; |
414 | req.info.ifi_index = if_nametoindex(intf); |
415 | req.info.ifi_flags = IFF_UP; |
416 | req.info.ifi_change = IFF_UP; |
417 | |
418 | if (send(sock, &req, req.nh.nlmsg_len, 0) < 0) { |
419 | pr_err("send()" ); |
420 | return -1; |
421 | } |
422 | return netlink_check_answer(sock); |
423 | } |
424 | |
425 | static int ip4_route_set(int sock, uint32_t seq, const char *intf, |
426 | struct in_addr src, struct in_addr dst) |
427 | { |
428 | struct { |
429 | struct nlmsghdr nh; |
430 | struct rtmsg rt; |
431 | char attrbuf[MAX_PAYLOAD]; |
432 | } req; |
433 | unsigned int index = if_nametoindex(intf); |
434 | |
435 | memset(&req, 0, sizeof(req)); |
436 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.rt)); |
437 | req.nh.nlmsg_type = RTM_NEWROUTE; |
438 | req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_CREATE; |
439 | req.nh.nlmsg_seq = seq; |
440 | req.rt.rtm_family = AF_INET; |
441 | req.rt.rtm_dst_len = 32; |
442 | req.rt.rtm_table = RT_TABLE_MAIN; |
443 | req.rt.rtm_protocol = RTPROT_BOOT; |
444 | req.rt.rtm_scope = RT_SCOPE_LINK; |
445 | req.rt.rtm_type = RTN_UNICAST; |
446 | |
447 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: RTA_DST, payload: &dst, size: sizeof(dst))) |
448 | return -1; |
449 | |
450 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: RTA_PREFSRC, payload: &src, size: sizeof(src))) |
451 | return -1; |
452 | |
453 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: RTA_OIF, payload: &index, size: sizeof(index))) |
454 | return -1; |
455 | |
456 | if (send(sock, &req, req.nh.nlmsg_len, 0) < 0) { |
457 | pr_err("send()" ); |
458 | return -1; |
459 | } |
460 | |
461 | return netlink_check_answer(sock); |
462 | } |
463 | |
464 | static int tunnel_set_route(int route_sock, uint32_t *route_seq, char *veth, |
465 | struct in_addr tunsrc, struct in_addr tundst) |
466 | { |
467 | if (ip4_addr_set(sock: route_sock, seq: (*route_seq)++, intf: "lo" , |
468 | addr: tunsrc, PREFIX_LEN)) { |
469 | printk("Failed to set ipv4 addr" ); |
470 | return -1; |
471 | } |
472 | |
473 | if (ip4_route_set(sock: route_sock, seq: (*route_seq)++, intf: veth, src: tunsrc, dst: tundst)) { |
474 | printk("Failed to set ipv4 route" ); |
475 | return -1; |
476 | } |
477 | |
478 | return 0; |
479 | } |
480 | |
481 | static int init_child(int nsfd, char *veth, unsigned int src, unsigned int dst) |
482 | { |
483 | struct in_addr intsrc = inet_makeaddr(INADDR_B, src); |
484 | struct in_addr tunsrc = inet_makeaddr(INADDR_A, src); |
485 | struct in_addr tundst = inet_makeaddr(INADDR_A, dst); |
486 | int route_sock = -1, ret = -1; |
487 | uint32_t route_seq; |
488 | |
489 | if (switch_ns(fd: nsfd)) |
490 | return -1; |
491 | |
492 | if (netlink_sock(sock: &route_sock, seq_nr: &route_seq, NETLINK_ROUTE)) { |
493 | printk("Failed to open netlink route socket in child" ); |
494 | return -1; |
495 | } |
496 | |
497 | if (ip4_addr_set(sock: route_sock, seq: route_seq++, intf: veth, addr: intsrc, PREFIX_LEN)) { |
498 | printk("Failed to set ipv4 addr" ); |
499 | goto err; |
500 | } |
501 | |
502 | if (link_set_up(sock: route_sock, seq: route_seq++, intf: veth)) { |
503 | printk("Failed to bring up %s" , veth); |
504 | goto err; |
505 | } |
506 | |
507 | if (tunnel_set_route(route_sock, route_seq: &route_seq, veth, tunsrc, tundst)) { |
508 | printk("Failed to add tunnel route on %s" , veth); |
509 | goto err; |
510 | } |
511 | ret = 0; |
512 | |
513 | err: |
514 | close(route_sock); |
515 | return ret; |
516 | } |
517 | |
518 | #define ALGO_LEN 64 |
519 | enum desc_type { |
520 | CREATE_TUNNEL = 0, |
521 | ALLOCATE_SPI, |
522 | MONITOR_ACQUIRE, |
523 | EXPIRE_STATE, |
524 | EXPIRE_POLICY, |
525 | SPDINFO_ATTRS, |
526 | }; |
527 | const char *desc_name[] = { |
528 | "create tunnel" , |
529 | "alloc spi" , |
530 | "monitor acquire" , |
531 | "expire state" , |
532 | "expire policy" , |
533 | "spdinfo attributes" , |
534 | "" |
535 | }; |
536 | struct xfrm_desc { |
537 | enum desc_type type; |
538 | uint8_t proto; |
539 | char a_algo[ALGO_LEN]; |
540 | char e_algo[ALGO_LEN]; |
541 | char c_algo[ALGO_LEN]; |
542 | char ae_algo[ALGO_LEN]; |
543 | unsigned int icv_len; |
544 | /* unsigned key_len; */ |
545 | }; |
546 | |
547 | enum msg_type { |
548 | MSG_ACK = 0, |
549 | MSG_EXIT, |
550 | MSG_PING, |
551 | MSG_XFRM_PREPARE, |
552 | MSG_XFRM_ADD, |
553 | MSG_XFRM_DEL, |
554 | MSG_XFRM_CLEANUP, |
555 | }; |
556 | |
557 | struct test_desc { |
558 | enum msg_type type; |
559 | union { |
560 | struct { |
561 | in_addr_t reply_ip; |
562 | unsigned int port; |
563 | } ping; |
564 | struct xfrm_desc xfrm_desc; |
565 | } body; |
566 | }; |
567 | |
568 | struct test_result { |
569 | struct xfrm_desc desc; |
570 | unsigned int res; |
571 | }; |
572 | |
573 | static void write_test_result(unsigned int res, struct xfrm_desc *d) |
574 | { |
575 | struct test_result tr = {}; |
576 | ssize_t ret; |
577 | |
578 | tr.desc = *d; |
579 | tr.res = res; |
580 | |
581 | ret = write(results_fd[1], &tr, sizeof(tr)); |
582 | if (ret != sizeof(tr)) |
583 | pr_err("Failed to write the result in pipe %zd" , ret); |
584 | } |
585 | |
586 | static void write_msg(int fd, struct test_desc *msg, bool exit_of_fail) |
587 | { |
588 | ssize_t bytes = write(fd, msg, sizeof(*msg)); |
589 | |
590 | /* Make sure that write/read is atomic to a pipe */ |
591 | BUILD_BUG_ON(sizeof(struct test_desc) > PIPE_BUF); |
592 | |
593 | if (bytes < 0) { |
594 | pr_err("write()" ); |
595 | if (exit_of_fail) |
596 | exit(KSFT_FAIL); |
597 | } |
598 | if (bytes != sizeof(*msg)) { |
599 | pr_err("sent part of the message %zd/%zu" , bytes, sizeof(*msg)); |
600 | if (exit_of_fail) |
601 | exit(KSFT_FAIL); |
602 | } |
603 | } |
604 | |
605 | static void read_msg(int fd, struct test_desc *msg, bool exit_of_fail) |
606 | { |
607 | ssize_t bytes = read(fd, msg, sizeof(*msg)); |
608 | |
609 | if (bytes < 0) { |
610 | pr_err("read()" ); |
611 | if (exit_of_fail) |
612 | exit(KSFT_FAIL); |
613 | } |
614 | if (bytes != sizeof(*msg)) { |
615 | pr_err("got incomplete message %zd/%zu" , bytes, sizeof(*msg)); |
616 | if (exit_of_fail) |
617 | exit(KSFT_FAIL); |
618 | } |
619 | } |
620 | |
621 | static int udp_ping_init(struct in_addr listen_ip, unsigned int u_timeout, |
622 | unsigned int *server_port, int sock[2]) |
623 | { |
624 | struct sockaddr_in server; |
625 | struct timeval t = { .tv_sec = 0, .tv_usec = u_timeout }; |
626 | socklen_t s_len = sizeof(server); |
627 | |
628 | sock[0] = socket(AF_INET, SOCK_DGRAM, 0); |
629 | if (sock[0] < 0) { |
630 | pr_err("socket()" ); |
631 | return -1; |
632 | } |
633 | |
634 | server.sin_family = AF_INET; |
635 | server.sin_port = 0; |
636 | memcpy(&server.sin_addr.s_addr, &listen_ip, sizeof(struct in_addr)); |
637 | |
638 | if (bind(sock[0], (struct sockaddr *)&server, s_len)) { |
639 | pr_err("bind()" ); |
640 | goto err_close_server; |
641 | } |
642 | |
643 | if (getsockname(sock[0], (struct sockaddr *)&server, &s_len)) { |
644 | pr_err("getsockname()" ); |
645 | goto err_close_server; |
646 | } |
647 | |
648 | *server_port = ntohs(server.sin_port); |
649 | |
650 | if (setsockopt(sock[0], SOL_SOCKET, SO_RCVTIMEO, (const char *)&t, sizeof t)) { |
651 | pr_err("setsockopt()" ); |
652 | goto err_close_server; |
653 | } |
654 | |
655 | sock[1] = socket(AF_INET, SOCK_DGRAM, 0); |
656 | if (sock[1] < 0) { |
657 | pr_err("socket()" ); |
658 | goto err_close_server; |
659 | } |
660 | |
661 | return 0; |
662 | |
663 | err_close_server: |
664 | close(sock[0]); |
665 | return -1; |
666 | } |
667 | |
668 | static int udp_ping_send(int sock[2], in_addr_t dest_ip, unsigned int port, |
669 | char *buf, size_t buf_len) |
670 | { |
671 | struct sockaddr_in server; |
672 | const struct sockaddr *dest_addr = (struct sockaddr *)&server; |
673 | char *sock_buf[buf_len]; |
674 | ssize_t r_bytes, s_bytes; |
675 | |
676 | server.sin_family = AF_INET; |
677 | server.sin_port = htons(port); |
678 | server.sin_addr.s_addr = dest_ip; |
679 | |
680 | s_bytes = sendto(sock[1], buf, buf_len, 0, dest_addr, sizeof(server)); |
681 | if (s_bytes < 0) { |
682 | pr_err("sendto()" ); |
683 | return -1; |
684 | } else if (s_bytes != buf_len) { |
685 | printk("send part of the message: %zd/%zu" , s_bytes, sizeof(server)); |
686 | return -1; |
687 | } |
688 | |
689 | r_bytes = recv(sock[0], sock_buf, buf_len, 0); |
690 | if (r_bytes < 0) { |
691 | if (errno != EAGAIN) |
692 | pr_err("recv()" ); |
693 | return -1; |
694 | } else if (r_bytes == 0) { /* EOF */ |
695 | printk("EOF on reply to ping" ); |
696 | return -1; |
697 | } else if (r_bytes != buf_len || memcmp(p: buf, q: sock_buf, size: buf_len)) { |
698 | printk("ping reply packet is corrupted %zd/%zu" , r_bytes, buf_len); |
699 | return -1; |
700 | } |
701 | |
702 | return 0; |
703 | } |
704 | |
705 | static int udp_ping_reply(int sock[2], in_addr_t dest_ip, unsigned int port, |
706 | char *buf, size_t buf_len) |
707 | { |
708 | struct sockaddr_in server; |
709 | const struct sockaddr *dest_addr = (struct sockaddr *)&server; |
710 | char *sock_buf[buf_len]; |
711 | ssize_t r_bytes, s_bytes; |
712 | |
713 | server.sin_family = AF_INET; |
714 | server.sin_port = htons(port); |
715 | server.sin_addr.s_addr = dest_ip; |
716 | |
717 | r_bytes = recv(sock[0], sock_buf, buf_len, 0); |
718 | if (r_bytes < 0) { |
719 | if (errno != EAGAIN) |
720 | pr_err("recv()" ); |
721 | return -1; |
722 | } |
723 | if (r_bytes == 0) { /* EOF */ |
724 | printk("EOF on reply to ping" ); |
725 | return -1; |
726 | } |
727 | if (r_bytes != buf_len || memcmp(p: buf, q: sock_buf, size: buf_len)) { |
728 | printk("ping reply packet is corrupted %zd/%zu" , r_bytes, buf_len); |
729 | return -1; |
730 | } |
731 | |
732 | s_bytes = sendto(sock[1], buf, buf_len, 0, dest_addr, sizeof(server)); |
733 | if (s_bytes < 0) { |
734 | pr_err("sendto()" ); |
735 | return -1; |
736 | } else if (s_bytes != buf_len) { |
737 | printk("send part of the message: %zd/%zu" , s_bytes, sizeof(server)); |
738 | return -1; |
739 | } |
740 | |
741 | return 0; |
742 | } |
743 | |
744 | typedef int (*ping_f)(int sock[2], in_addr_t dest_ip, unsigned int port, |
745 | char *buf, size_t buf_len); |
746 | static int do_ping(int cmd_fd, char *buf, size_t buf_len, struct in_addr from, |
747 | bool init_side, int d_port, in_addr_t to, ping_f func) |
748 | { |
749 | struct test_desc msg; |
750 | unsigned int s_port, i, ping_succeeded = 0; |
751 | int ping_sock[2]; |
752 | char to_str[IPV4_STR_SZ] = {}, from_str[IPV4_STR_SZ] = {}; |
753 | |
754 | if (udp_ping_init(listen_ip: from, u_timeout: ping_timeout, server_port: &s_port, sock: ping_sock)) { |
755 | printk("Failed to init ping" ); |
756 | return -1; |
757 | } |
758 | |
759 | memset(&msg, 0, sizeof(msg)); |
760 | msg.type = MSG_PING; |
761 | msg.body.ping.port = s_port; |
762 | memcpy(&msg.body.ping.reply_ip, &from, sizeof(from)); |
763 | |
764 | write_msg(fd: cmd_fd, msg: &msg, exit_of_fail: 0); |
765 | if (init_side) { |
766 | /* The other end sends ip to ping */ |
767 | read_msg(fd: cmd_fd, msg: &msg, exit_of_fail: 0); |
768 | if (msg.type != MSG_PING) |
769 | return -1; |
770 | to = msg.body.ping.reply_ip; |
771 | d_port = msg.body.ping.port; |
772 | } |
773 | |
774 | for (i = 0; i < ping_count ; i++) { |
775 | struct timespec sleep_time = { |
776 | .tv_sec = 0, |
777 | .tv_nsec = ping_delay_nsec, |
778 | }; |
779 | |
780 | ping_succeeded += !func(ping_sock, to, d_port, buf, page_size); |
781 | nanosleep(&sleep_time, 0); |
782 | } |
783 | |
784 | close(ping_sock[0]); |
785 | close(ping_sock[1]); |
786 | |
787 | strncpy(to_str, inet_ntoa(*(struct in_addr *)&to), IPV4_STR_SZ - 1); |
788 | strncpy(from_str, inet_ntoa(from), IPV4_STR_SZ - 1); |
789 | |
790 | if (ping_succeeded < ping_success) { |
791 | printk("ping (%s) %s->%s failed %u/%u times" , |
792 | init_side ? "send" : "reply" , from_str, to_str, |
793 | ping_count - ping_succeeded, ping_count); |
794 | return -1; |
795 | } |
796 | |
797 | #ifdef DEBUG |
798 | printk("ping (%s) %s->%s succeeded %u/%u times" , |
799 | init_side ? "send" : "reply" , from_str, to_str, |
800 | ping_succeeded, ping_count); |
801 | #endif |
802 | |
803 | return 0; |
804 | } |
805 | |
806 | static int xfrm_fill_key(char *name, char *buf, |
807 | size_t buf_len, unsigned int *key_len) |
808 | { |
809 | int i; |
810 | |
811 | for (i = 0; i < XFRM_ALGO_NR_KEYS; i++) { |
812 | if (strncmp(name, xfrm_key_entries[i].algo_name, ALGO_LEN) == 0) |
813 | *key_len = xfrm_key_entries[i].key_len; |
814 | } |
815 | |
816 | if (*key_len > buf_len) { |
817 | printk("Can't pack a key - too big for buffer" ); |
818 | return -1; |
819 | } |
820 | |
821 | randomize_buffer(buf, buflen: *key_len); |
822 | |
823 | return 0; |
824 | } |
825 | |
826 | static int xfrm_state_pack_algo(struct nlmsghdr *nh, size_t req_sz, |
827 | struct xfrm_desc *desc) |
828 | { |
829 | struct { |
830 | union { |
831 | struct xfrm_algo alg; |
832 | struct xfrm_algo_aead aead; |
833 | struct xfrm_algo_auth auth; |
834 | } u; |
835 | char buf[XFRM_ALGO_KEY_BUF_SIZE]; |
836 | } alg = {}; |
837 | size_t alen, elen, clen, aelen; |
838 | unsigned short type; |
839 | |
840 | alen = strlen(desc->a_algo); |
841 | elen = strlen(desc->e_algo); |
842 | clen = strlen(desc->c_algo); |
843 | aelen = strlen(desc->ae_algo); |
844 | |
845 | /* Verify desc */ |
846 | switch (desc->proto) { |
847 | case IPPROTO_AH: |
848 | if (!alen || elen || clen || aelen) { |
849 | printk("BUG: buggy ah desc" ); |
850 | return -1; |
851 | } |
852 | strncpy(p: alg.u.alg.alg_name, q: desc->a_algo, ALGO_LEN - 1); |
853 | if (xfrm_fill_key(name: desc->a_algo, buf: alg.u.alg.alg_key, |
854 | buf_len: sizeof(alg.buf), key_len: &alg.u.alg.alg_key_len)) |
855 | return -1; |
856 | type = XFRMA_ALG_AUTH; |
857 | break; |
858 | case IPPROTO_COMP: |
859 | if (!clen || elen || alen || aelen) { |
860 | printk("BUG: buggy comp desc" ); |
861 | return -1; |
862 | } |
863 | strncpy(p: alg.u.alg.alg_name, q: desc->c_algo, ALGO_LEN - 1); |
864 | if (xfrm_fill_key(name: desc->c_algo, buf: alg.u.alg.alg_key, |
865 | buf_len: sizeof(alg.buf), key_len: &alg.u.alg.alg_key_len)) |
866 | return -1; |
867 | type = XFRMA_ALG_COMP; |
868 | break; |
869 | case IPPROTO_ESP: |
870 | if (!((alen && elen) ^ aelen) || clen) { |
871 | printk("BUG: buggy esp desc" ); |
872 | return -1; |
873 | } |
874 | if (aelen) { |
875 | alg.u.aead.alg_icv_len = desc->icv_len; |
876 | strncpy(p: alg.u.aead.alg_name, q: desc->ae_algo, ALGO_LEN - 1); |
877 | if (xfrm_fill_key(name: desc->ae_algo, buf: alg.u.aead.alg_key, |
878 | buf_len: sizeof(alg.buf), key_len: &alg.u.aead.alg_key_len)) |
879 | return -1; |
880 | type = XFRMA_ALG_AEAD; |
881 | } else { |
882 | |
883 | strncpy(p: alg.u.alg.alg_name, q: desc->e_algo, ALGO_LEN - 1); |
884 | type = XFRMA_ALG_CRYPT; |
885 | if (xfrm_fill_key(name: desc->e_algo, buf: alg.u.alg.alg_key, |
886 | buf_len: sizeof(alg.buf), key_len: &alg.u.alg.alg_key_len)) |
887 | return -1; |
888 | if (rtattr_pack(nh, req_sz, rta_type: type, payload: &alg, size: sizeof(alg))) |
889 | return -1; |
890 | |
891 | strncpy(p: alg.u.alg.alg_name, q: desc->a_algo, ALGO_LEN); |
892 | type = XFRMA_ALG_AUTH; |
893 | if (xfrm_fill_key(name: desc->a_algo, buf: alg.u.alg.alg_key, |
894 | buf_len: sizeof(alg.buf), key_len: &alg.u.alg.alg_key_len)) |
895 | return -1; |
896 | } |
897 | break; |
898 | default: |
899 | printk("BUG: unknown proto in desc" ); |
900 | return -1; |
901 | } |
902 | |
903 | if (rtattr_pack(nh, req_sz, rta_type: type, payload: &alg, size: sizeof(alg))) |
904 | return -1; |
905 | |
906 | return 0; |
907 | } |
908 | |
909 | static inline uint32_t gen_spi(struct in_addr src) |
910 | { |
911 | return htonl(inet_lnaof(src)); |
912 | } |
913 | |
914 | static int xfrm_state_add(int xfrm_sock, uint32_t seq, uint32_t spi, |
915 | struct in_addr src, struct in_addr dst, |
916 | struct xfrm_desc *desc) |
917 | { |
918 | struct { |
919 | struct nlmsghdr nh; |
920 | struct xfrm_usersa_info info; |
921 | char attrbuf[MAX_PAYLOAD]; |
922 | } req; |
923 | |
924 | memset(&req, 0, sizeof(req)); |
925 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.info)); |
926 | req.nh.nlmsg_type = XFRM_MSG_NEWSA; |
927 | req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; |
928 | req.nh.nlmsg_seq = seq; |
929 | |
930 | /* Fill selector. */ |
931 | memcpy(&req.info.sel.daddr, &dst, sizeof(dst)); |
932 | memcpy(&req.info.sel.saddr, &src, sizeof(src)); |
933 | req.info.sel.family = AF_INET; |
934 | req.info.sel.prefixlen_d = PREFIX_LEN; |
935 | req.info.sel.prefixlen_s = PREFIX_LEN; |
936 | |
937 | /* Fill id */ |
938 | memcpy(&req.info.id.daddr, &dst, sizeof(dst)); |
939 | /* Note: zero-spi cannot be deleted */ |
940 | req.info.id.spi = spi; |
941 | req.info.id.proto = desc->proto; |
942 | |
943 | memcpy(&req.info.saddr, &src, sizeof(src)); |
944 | |
945 | /* Fill lifteme_cfg */ |
946 | req.info.lft.soft_byte_limit = XFRM_INF; |
947 | req.info.lft.hard_byte_limit = XFRM_INF; |
948 | req.info.lft.soft_packet_limit = XFRM_INF; |
949 | req.info.lft.hard_packet_limit = XFRM_INF; |
950 | |
951 | req.info.family = AF_INET; |
952 | req.info.mode = XFRM_MODE_TUNNEL; |
953 | |
954 | if (xfrm_state_pack_algo(nh: &req.nh, req_sz: sizeof(req), desc)) |
955 | return -1; |
956 | |
957 | if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) { |
958 | pr_err("send()" ); |
959 | return -1; |
960 | } |
961 | |
962 | return netlink_check_answer(sock: xfrm_sock); |
963 | } |
964 | |
965 | static bool xfrm_usersa_found(struct xfrm_usersa_info *info, uint32_t spi, |
966 | struct in_addr src, struct in_addr dst, |
967 | struct xfrm_desc *desc) |
968 | { |
969 | if (memcmp(p: &info->sel.daddr, q: &dst, size: sizeof(dst))) |
970 | return false; |
971 | |
972 | if (memcmp(p: &info->sel.saddr, q: &src, size: sizeof(src))) |
973 | return false; |
974 | |
975 | if (info->sel.family != AF_INET || |
976 | info->sel.prefixlen_d != PREFIX_LEN || |
977 | info->sel.prefixlen_s != PREFIX_LEN) |
978 | return false; |
979 | |
980 | if (info->id.spi != spi || info->id.proto != desc->proto) |
981 | return false; |
982 | |
983 | if (memcmp(p: &info->id.daddr, q: &dst, size: sizeof(dst))) |
984 | return false; |
985 | |
986 | if (memcmp(p: &info->saddr, q: &src, size: sizeof(src))) |
987 | return false; |
988 | |
989 | if (info->lft.soft_byte_limit != XFRM_INF || |
990 | info->lft.hard_byte_limit != XFRM_INF || |
991 | info->lft.soft_packet_limit != XFRM_INF || |
992 | info->lft.hard_packet_limit != XFRM_INF) |
993 | return false; |
994 | |
995 | if (info->family != AF_INET || info->mode != XFRM_MODE_TUNNEL) |
996 | return false; |
997 | |
998 | /* XXX: check xfrm algo, see xfrm_state_pack_algo(). */ |
999 | |
1000 | return true; |
1001 | } |
1002 | |
1003 | static int xfrm_state_check(int xfrm_sock, uint32_t seq, uint32_t spi, |
1004 | struct in_addr src, struct in_addr dst, |
1005 | struct xfrm_desc *desc) |
1006 | { |
1007 | struct { |
1008 | struct nlmsghdr nh; |
1009 | char attrbuf[MAX_PAYLOAD]; |
1010 | } req; |
1011 | struct { |
1012 | struct nlmsghdr nh; |
1013 | union { |
1014 | struct xfrm_usersa_info info; |
1015 | int error; |
1016 | }; |
1017 | char attrbuf[MAX_PAYLOAD]; |
1018 | } answer; |
1019 | struct xfrm_address_filter filter = {}; |
1020 | bool found = false; |
1021 | |
1022 | |
1023 | memset(&req, 0, sizeof(req)); |
1024 | req.nh.nlmsg_len = NLMSG_LENGTH(0); |
1025 | req.nh.nlmsg_type = XFRM_MSG_GETSA; |
1026 | req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; |
1027 | req.nh.nlmsg_seq = seq; |
1028 | |
1029 | /* |
1030 | * Add dump filter by source address as there may be other tunnels |
1031 | * in this netns (if tests run in parallel). |
1032 | */ |
1033 | filter.family = AF_INET; |
1034 | filter.splen = 0x1f; /* 0xffffffff mask see addr_match() */ |
1035 | memcpy(&filter.saddr, &src, sizeof(src)); |
1036 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: XFRMA_ADDRESS_FILTER, |
1037 | payload: &filter, size: sizeof(filter))) |
1038 | return -1; |
1039 | |
1040 | if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) { |
1041 | pr_err("send()" ); |
1042 | return -1; |
1043 | } |
1044 | |
1045 | while (1) { |
1046 | if (recv(xfrm_sock, &answer, sizeof(answer), 0) < 0) { |
1047 | pr_err("recv()" ); |
1048 | return -1; |
1049 | } |
1050 | if (answer.nh.nlmsg_type == NLMSG_ERROR) { |
1051 | printk("NLMSG_ERROR: %d: %s" , |
1052 | answer.error, strerror(-answer.error)); |
1053 | return -1; |
1054 | } else if (answer.nh.nlmsg_type == NLMSG_DONE) { |
1055 | if (found) |
1056 | return 0; |
1057 | printk("didn't find allocated xfrm state in dump" ); |
1058 | return -1; |
1059 | } else if (answer.nh.nlmsg_type == XFRM_MSG_NEWSA) { |
1060 | if (xfrm_usersa_found(info: &answer.info, spi, src, dst, desc)) |
1061 | found = true; |
1062 | } |
1063 | } |
1064 | } |
1065 | |
1066 | static int xfrm_set(int xfrm_sock, uint32_t *seq, |
1067 | struct in_addr src, struct in_addr dst, |
1068 | struct in_addr tunsrc, struct in_addr tundst, |
1069 | struct xfrm_desc *desc) |
1070 | { |
1071 | int err; |
1072 | |
1073 | err = xfrm_state_add(xfrm_sock, seq: (*seq)++, spi: gen_spi(src), src, dst, desc); |
1074 | if (err) { |
1075 | printk("Failed to add xfrm state" ); |
1076 | return -1; |
1077 | } |
1078 | |
1079 | err = xfrm_state_add(xfrm_sock, seq: (*seq)++, spi: gen_spi(src), src: dst, dst: src, desc); |
1080 | if (err) { |
1081 | printk("Failed to add xfrm state" ); |
1082 | return -1; |
1083 | } |
1084 | |
1085 | /* Check dumps for XFRM_MSG_GETSA */ |
1086 | err = xfrm_state_check(xfrm_sock, seq: (*seq)++, spi: gen_spi(src), src, dst, desc); |
1087 | err |= xfrm_state_check(xfrm_sock, seq: (*seq)++, spi: gen_spi(src), src: dst, dst: src, desc); |
1088 | if (err) { |
1089 | printk("Failed to check xfrm state" ); |
1090 | return -1; |
1091 | } |
1092 | |
1093 | return 0; |
1094 | } |
1095 | |
1096 | static int xfrm_policy_add(int xfrm_sock, uint32_t seq, uint32_t spi, |
1097 | struct in_addr src, struct in_addr dst, uint8_t dir, |
1098 | struct in_addr tunsrc, struct in_addr tundst, uint8_t proto) |
1099 | { |
1100 | struct { |
1101 | struct nlmsghdr nh; |
1102 | struct xfrm_userpolicy_info info; |
1103 | char attrbuf[MAX_PAYLOAD]; |
1104 | } req; |
1105 | struct xfrm_user_tmpl tmpl; |
1106 | |
1107 | memset(&req, 0, sizeof(req)); |
1108 | memset(&tmpl, 0, sizeof(tmpl)); |
1109 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.info)); |
1110 | req.nh.nlmsg_type = XFRM_MSG_NEWPOLICY; |
1111 | req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; |
1112 | req.nh.nlmsg_seq = seq; |
1113 | |
1114 | /* Fill selector. */ |
1115 | memcpy(&req.info.sel.daddr, &dst, sizeof(tundst)); |
1116 | memcpy(&req.info.sel.saddr, &src, sizeof(tunsrc)); |
1117 | req.info.sel.family = AF_INET; |
1118 | req.info.sel.prefixlen_d = PREFIX_LEN; |
1119 | req.info.sel.prefixlen_s = PREFIX_LEN; |
1120 | |
1121 | /* Fill lifteme_cfg */ |
1122 | req.info.lft.soft_byte_limit = XFRM_INF; |
1123 | req.info.lft.hard_byte_limit = XFRM_INF; |
1124 | req.info.lft.soft_packet_limit = XFRM_INF; |
1125 | req.info.lft.hard_packet_limit = XFRM_INF; |
1126 | |
1127 | req.info.dir = dir; |
1128 | |
1129 | /* Fill tmpl */ |
1130 | memcpy(&tmpl.id.daddr, &dst, sizeof(dst)); |
1131 | /* Note: zero-spi cannot be deleted */ |
1132 | tmpl.id.spi = spi; |
1133 | tmpl.id.proto = proto; |
1134 | tmpl.family = AF_INET; |
1135 | memcpy(&tmpl.saddr, &src, sizeof(src)); |
1136 | tmpl.mode = XFRM_MODE_TUNNEL; |
1137 | tmpl.aalgos = (~(uint32_t)0); |
1138 | tmpl.ealgos = (~(uint32_t)0); |
1139 | tmpl.calgos = (~(uint32_t)0); |
1140 | |
1141 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: XFRMA_TMPL, payload: &tmpl, size: sizeof(tmpl))) |
1142 | return -1; |
1143 | |
1144 | if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) { |
1145 | pr_err("send()" ); |
1146 | return -1; |
1147 | } |
1148 | |
1149 | return netlink_check_answer(sock: xfrm_sock); |
1150 | } |
1151 | |
1152 | static int xfrm_prepare(int xfrm_sock, uint32_t *seq, |
1153 | struct in_addr src, struct in_addr dst, |
1154 | struct in_addr tunsrc, struct in_addr tundst, uint8_t proto) |
1155 | { |
1156 | if (xfrm_policy_add(xfrm_sock, seq: (*seq)++, spi: gen_spi(src), src, dst, |
1157 | dir: XFRM_POLICY_OUT, tunsrc, tundst, proto)) { |
1158 | printk("Failed to add xfrm policy" ); |
1159 | return -1; |
1160 | } |
1161 | |
1162 | if (xfrm_policy_add(xfrm_sock, seq: (*seq)++, spi: gen_spi(src), src: dst, dst: src, |
1163 | dir: XFRM_POLICY_IN, tunsrc, tundst, proto)) { |
1164 | printk("Failed to add xfrm policy" ); |
1165 | return -1; |
1166 | } |
1167 | |
1168 | return 0; |
1169 | } |
1170 | |
1171 | static int xfrm_policy_del(int xfrm_sock, uint32_t seq, |
1172 | struct in_addr src, struct in_addr dst, uint8_t dir, |
1173 | struct in_addr tunsrc, struct in_addr tundst) |
1174 | { |
1175 | struct { |
1176 | struct nlmsghdr nh; |
1177 | struct xfrm_userpolicy_id id; |
1178 | char attrbuf[MAX_PAYLOAD]; |
1179 | } req; |
1180 | |
1181 | memset(&req, 0, sizeof(req)); |
1182 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.id)); |
1183 | req.nh.nlmsg_type = XFRM_MSG_DELPOLICY; |
1184 | req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; |
1185 | req.nh.nlmsg_seq = seq; |
1186 | |
1187 | /* Fill id */ |
1188 | memcpy(&req.id.sel.daddr, &dst, sizeof(tundst)); |
1189 | memcpy(&req.id.sel.saddr, &src, sizeof(tunsrc)); |
1190 | req.id.sel.family = AF_INET; |
1191 | req.id.sel.prefixlen_d = PREFIX_LEN; |
1192 | req.id.sel.prefixlen_s = PREFIX_LEN; |
1193 | req.id.dir = dir; |
1194 | |
1195 | if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) { |
1196 | pr_err("send()" ); |
1197 | return -1; |
1198 | } |
1199 | |
1200 | return netlink_check_answer(sock: xfrm_sock); |
1201 | } |
1202 | |
1203 | static int xfrm_cleanup(int xfrm_sock, uint32_t *seq, |
1204 | struct in_addr src, struct in_addr dst, |
1205 | struct in_addr tunsrc, struct in_addr tundst) |
1206 | { |
1207 | if (xfrm_policy_del(xfrm_sock, seq: (*seq)++, src, dst, |
1208 | dir: XFRM_POLICY_OUT, tunsrc, tundst)) { |
1209 | printk("Failed to add xfrm policy" ); |
1210 | return -1; |
1211 | } |
1212 | |
1213 | if (xfrm_policy_del(xfrm_sock, seq: (*seq)++, src: dst, dst: src, |
1214 | dir: XFRM_POLICY_IN, tunsrc, tundst)) { |
1215 | printk("Failed to add xfrm policy" ); |
1216 | return -1; |
1217 | } |
1218 | |
1219 | return 0; |
1220 | } |
1221 | |
1222 | static int xfrm_state_del(int xfrm_sock, uint32_t seq, uint32_t spi, |
1223 | struct in_addr src, struct in_addr dst, uint8_t proto) |
1224 | { |
1225 | struct { |
1226 | struct nlmsghdr nh; |
1227 | struct xfrm_usersa_id id; |
1228 | char attrbuf[MAX_PAYLOAD]; |
1229 | } req; |
1230 | xfrm_address_t saddr = {}; |
1231 | |
1232 | memset(&req, 0, sizeof(req)); |
1233 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.id)); |
1234 | req.nh.nlmsg_type = XFRM_MSG_DELSA; |
1235 | req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; |
1236 | req.nh.nlmsg_seq = seq; |
1237 | |
1238 | memcpy(&req.id.daddr, &dst, sizeof(dst)); |
1239 | req.id.family = AF_INET; |
1240 | req.id.proto = proto; |
1241 | /* Note: zero-spi cannot be deleted */ |
1242 | req.id.spi = spi; |
1243 | |
1244 | memcpy(&saddr, &src, sizeof(src)); |
1245 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: XFRMA_SRCADDR, payload: &saddr, size: sizeof(saddr))) |
1246 | return -1; |
1247 | |
1248 | if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) { |
1249 | pr_err("send()" ); |
1250 | return -1; |
1251 | } |
1252 | |
1253 | return netlink_check_answer(sock: xfrm_sock); |
1254 | } |
1255 | |
1256 | static int xfrm_delete(int xfrm_sock, uint32_t *seq, |
1257 | struct in_addr src, struct in_addr dst, |
1258 | struct in_addr tunsrc, struct in_addr tundst, uint8_t proto) |
1259 | { |
1260 | if (xfrm_state_del(xfrm_sock, seq: (*seq)++, spi: gen_spi(src), src, dst, proto)) { |
1261 | printk("Failed to remove xfrm state" ); |
1262 | return -1; |
1263 | } |
1264 | |
1265 | if (xfrm_state_del(xfrm_sock, seq: (*seq)++, spi: gen_spi(src), src: dst, dst: src, proto)) { |
1266 | printk("Failed to remove xfrm state" ); |
1267 | return -1; |
1268 | } |
1269 | |
1270 | return 0; |
1271 | } |
1272 | |
1273 | static int xfrm_state_allocspi(int xfrm_sock, uint32_t *seq, |
1274 | uint32_t spi, uint8_t proto) |
1275 | { |
1276 | struct { |
1277 | struct nlmsghdr nh; |
1278 | struct xfrm_userspi_info spi; |
1279 | } req; |
1280 | struct { |
1281 | struct nlmsghdr nh; |
1282 | union { |
1283 | struct xfrm_usersa_info info; |
1284 | int error; |
1285 | }; |
1286 | } answer; |
1287 | |
1288 | memset(&req, 0, sizeof(req)); |
1289 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.spi)); |
1290 | req.nh.nlmsg_type = XFRM_MSG_ALLOCSPI; |
1291 | req.nh.nlmsg_flags = NLM_F_REQUEST; |
1292 | req.nh.nlmsg_seq = (*seq)++; |
1293 | |
1294 | req.spi.info.family = AF_INET; |
1295 | req.spi.min = spi; |
1296 | req.spi.max = spi; |
1297 | req.spi.info.id.proto = proto; |
1298 | |
1299 | if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) { |
1300 | pr_err("send()" ); |
1301 | return KSFT_FAIL; |
1302 | } |
1303 | |
1304 | if (recv(xfrm_sock, &answer, sizeof(answer), 0) < 0) { |
1305 | pr_err("recv()" ); |
1306 | return KSFT_FAIL; |
1307 | } else if (answer.nh.nlmsg_type == XFRM_MSG_NEWSA) { |
1308 | uint32_t new_spi = htonl(answer.info.id.spi); |
1309 | |
1310 | if (new_spi != spi) { |
1311 | printk("allocated spi is different from requested: %#x != %#x" , |
1312 | new_spi, spi); |
1313 | return KSFT_FAIL; |
1314 | } |
1315 | return KSFT_PASS; |
1316 | } else if (answer.nh.nlmsg_type != NLMSG_ERROR) { |
1317 | printk("expected NLMSG_ERROR, got %d" , (int)answer.nh.nlmsg_type); |
1318 | return KSFT_FAIL; |
1319 | } |
1320 | |
1321 | printk("NLMSG_ERROR: %d: %s" , answer.error, strerror(-answer.error)); |
1322 | return (answer.error) ? KSFT_FAIL : KSFT_PASS; |
1323 | } |
1324 | |
1325 | static int netlink_sock_bind(int *sock, uint32_t *seq, int proto, uint32_t groups) |
1326 | { |
1327 | struct sockaddr_nl snl = {}; |
1328 | socklen_t addr_len; |
1329 | int ret = -1; |
1330 | |
1331 | snl.nl_family = AF_NETLINK; |
1332 | snl.nl_groups = groups; |
1333 | |
1334 | if (netlink_sock(sock, seq_nr: seq, proto)) { |
1335 | printk("Failed to open xfrm netlink socket" ); |
1336 | return -1; |
1337 | } |
1338 | |
1339 | if (bind(*sock, (struct sockaddr *)&snl, sizeof(snl)) < 0) { |
1340 | pr_err("bind()" ); |
1341 | goto out_close; |
1342 | } |
1343 | |
1344 | addr_len = sizeof(snl); |
1345 | if (getsockname(*sock, (struct sockaddr *)&snl, &addr_len) < 0) { |
1346 | pr_err("getsockname()" ); |
1347 | goto out_close; |
1348 | } |
1349 | if (addr_len != sizeof(snl)) { |
1350 | printk("Wrong address length %d" , addr_len); |
1351 | goto out_close; |
1352 | } |
1353 | if (snl.nl_family != AF_NETLINK) { |
1354 | printk("Wrong address family %d" , snl.nl_family); |
1355 | goto out_close; |
1356 | } |
1357 | return 0; |
1358 | |
1359 | out_close: |
1360 | close(*sock); |
1361 | return ret; |
1362 | } |
1363 | |
1364 | static int xfrm_monitor_acquire(int xfrm_sock, uint32_t *seq, unsigned int nr) |
1365 | { |
1366 | struct { |
1367 | struct nlmsghdr nh; |
1368 | union { |
1369 | struct xfrm_user_acquire acq; |
1370 | int error; |
1371 | }; |
1372 | char attrbuf[MAX_PAYLOAD]; |
1373 | } req; |
1374 | struct xfrm_user_tmpl xfrm_tmpl = {}; |
1375 | int xfrm_listen = -1, ret = KSFT_FAIL; |
1376 | uint32_t seq_listen; |
1377 | |
1378 | if (netlink_sock_bind(sock: &xfrm_listen, seq: &seq_listen, NETLINK_XFRM, XFRMNLGRP_ACQUIRE)) |
1379 | return KSFT_FAIL; |
1380 | |
1381 | memset(&req, 0, sizeof(req)); |
1382 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.acq)); |
1383 | req.nh.nlmsg_type = XFRM_MSG_ACQUIRE; |
1384 | req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; |
1385 | req.nh.nlmsg_seq = (*seq)++; |
1386 | |
1387 | req.acq.policy.sel.family = AF_INET; |
1388 | req.acq.aalgos = 0xfeed; |
1389 | req.acq.ealgos = 0xbaad; |
1390 | req.acq.calgos = 0xbabe; |
1391 | |
1392 | xfrm_tmpl.family = AF_INET; |
1393 | xfrm_tmpl.id.proto = IPPROTO_ESP; |
1394 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: XFRMA_TMPL, payload: &xfrm_tmpl, size: sizeof(xfrm_tmpl))) |
1395 | goto out_close; |
1396 | |
1397 | if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) { |
1398 | pr_err("send()" ); |
1399 | goto out_close; |
1400 | } |
1401 | |
1402 | if (recv(xfrm_sock, &req, sizeof(req), 0) < 0) { |
1403 | pr_err("recv()" ); |
1404 | goto out_close; |
1405 | } else if (req.nh.nlmsg_type != NLMSG_ERROR) { |
1406 | printk("expected NLMSG_ERROR, got %d" , (int)req.nh.nlmsg_type); |
1407 | goto out_close; |
1408 | } |
1409 | |
1410 | if (req.error) { |
1411 | printk("NLMSG_ERROR: %d: %s" , req.error, strerror(-req.error)); |
1412 | ret = req.error; |
1413 | goto out_close; |
1414 | } |
1415 | |
1416 | if (recv(xfrm_listen, &req, sizeof(req), 0) < 0) { |
1417 | pr_err("recv()" ); |
1418 | goto out_close; |
1419 | } |
1420 | |
1421 | if (req.acq.aalgos != 0xfeed || req.acq.ealgos != 0xbaad |
1422 | || req.acq.calgos != 0xbabe) { |
1423 | printk("xfrm_user_acquire has changed %x %x %x" , |
1424 | req.acq.aalgos, req.acq.ealgos, req.acq.calgos); |
1425 | goto out_close; |
1426 | } |
1427 | |
1428 | ret = KSFT_PASS; |
1429 | out_close: |
1430 | close(xfrm_listen); |
1431 | return ret; |
1432 | } |
1433 | |
1434 | static int xfrm_expire_state(int xfrm_sock, uint32_t *seq, |
1435 | unsigned int nr, struct xfrm_desc *desc) |
1436 | { |
1437 | struct { |
1438 | struct nlmsghdr nh; |
1439 | union { |
1440 | struct xfrm_user_expire expire; |
1441 | int error; |
1442 | }; |
1443 | } req; |
1444 | struct in_addr src, dst; |
1445 | int xfrm_listen = -1, ret = KSFT_FAIL; |
1446 | uint32_t seq_listen; |
1447 | |
1448 | src = inet_makeaddr(INADDR_B, child_ip(nr)); |
1449 | dst = inet_makeaddr(INADDR_B, grchild_ip(nr)); |
1450 | |
1451 | if (xfrm_state_add(xfrm_sock, seq: (*seq)++, spi: gen_spi(src), src, dst, desc)) { |
1452 | printk("Failed to add xfrm state" ); |
1453 | return KSFT_FAIL; |
1454 | } |
1455 | |
1456 | if (netlink_sock_bind(sock: &xfrm_listen, seq: &seq_listen, NETLINK_XFRM, XFRMNLGRP_EXPIRE)) |
1457 | return KSFT_FAIL; |
1458 | |
1459 | memset(&req, 0, sizeof(req)); |
1460 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.expire)); |
1461 | req.nh.nlmsg_type = XFRM_MSG_EXPIRE; |
1462 | req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; |
1463 | req.nh.nlmsg_seq = (*seq)++; |
1464 | |
1465 | memcpy(&req.expire.state.id.daddr, &dst, sizeof(dst)); |
1466 | req.expire.state.id.spi = gen_spi(src); |
1467 | req.expire.state.id.proto = desc->proto; |
1468 | req.expire.state.family = AF_INET; |
1469 | req.expire.hard = 0xff; |
1470 | |
1471 | if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) { |
1472 | pr_err("send()" ); |
1473 | goto out_close; |
1474 | } |
1475 | |
1476 | if (recv(xfrm_sock, &req, sizeof(req), 0) < 0) { |
1477 | pr_err("recv()" ); |
1478 | goto out_close; |
1479 | } else if (req.nh.nlmsg_type != NLMSG_ERROR) { |
1480 | printk("expected NLMSG_ERROR, got %d" , (int)req.nh.nlmsg_type); |
1481 | goto out_close; |
1482 | } |
1483 | |
1484 | if (req.error) { |
1485 | printk("NLMSG_ERROR: %d: %s" , req.error, strerror(-req.error)); |
1486 | ret = req.error; |
1487 | goto out_close; |
1488 | } |
1489 | |
1490 | if (recv(xfrm_listen, &req, sizeof(req), 0) < 0) { |
1491 | pr_err("recv()" ); |
1492 | goto out_close; |
1493 | } |
1494 | |
1495 | if (req.expire.hard != 0x1) { |
1496 | printk("expire.hard is not set: %x" , req.expire.hard); |
1497 | goto out_close; |
1498 | } |
1499 | |
1500 | ret = KSFT_PASS; |
1501 | out_close: |
1502 | close(xfrm_listen); |
1503 | return ret; |
1504 | } |
1505 | |
1506 | static int xfrm_expire_policy(int xfrm_sock, uint32_t *seq, |
1507 | unsigned int nr, struct xfrm_desc *desc) |
1508 | { |
1509 | struct { |
1510 | struct nlmsghdr nh; |
1511 | union { |
1512 | struct xfrm_user_polexpire expire; |
1513 | int error; |
1514 | }; |
1515 | } req; |
1516 | struct in_addr src, dst, tunsrc, tundst; |
1517 | int xfrm_listen = -1, ret = KSFT_FAIL; |
1518 | uint32_t seq_listen; |
1519 | |
1520 | src = inet_makeaddr(INADDR_B, child_ip(nr)); |
1521 | dst = inet_makeaddr(INADDR_B, grchild_ip(nr)); |
1522 | tunsrc = inet_makeaddr(INADDR_A, child_ip(nr)); |
1523 | tundst = inet_makeaddr(INADDR_A, grchild_ip(nr)); |
1524 | |
1525 | if (xfrm_policy_add(xfrm_sock, seq: (*seq)++, spi: gen_spi(src), src, dst, |
1526 | dir: XFRM_POLICY_OUT, tunsrc, tundst, proto: desc->proto)) { |
1527 | printk("Failed to add xfrm policy" ); |
1528 | return KSFT_FAIL; |
1529 | } |
1530 | |
1531 | if (netlink_sock_bind(sock: &xfrm_listen, seq: &seq_listen, NETLINK_XFRM, XFRMNLGRP_EXPIRE)) |
1532 | return KSFT_FAIL; |
1533 | |
1534 | memset(&req, 0, sizeof(req)); |
1535 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.expire)); |
1536 | req.nh.nlmsg_type = XFRM_MSG_POLEXPIRE; |
1537 | req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; |
1538 | req.nh.nlmsg_seq = (*seq)++; |
1539 | |
1540 | /* Fill selector. */ |
1541 | memcpy(&req.expire.pol.sel.daddr, &dst, sizeof(tundst)); |
1542 | memcpy(&req.expire.pol.sel.saddr, &src, sizeof(tunsrc)); |
1543 | req.expire.pol.sel.family = AF_INET; |
1544 | req.expire.pol.sel.prefixlen_d = PREFIX_LEN; |
1545 | req.expire.pol.sel.prefixlen_s = PREFIX_LEN; |
1546 | req.expire.pol.dir = XFRM_POLICY_OUT; |
1547 | req.expire.hard = 0xff; |
1548 | |
1549 | if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) { |
1550 | pr_err("send()" ); |
1551 | goto out_close; |
1552 | } |
1553 | |
1554 | if (recv(xfrm_sock, &req, sizeof(req), 0) < 0) { |
1555 | pr_err("recv()" ); |
1556 | goto out_close; |
1557 | } else if (req.nh.nlmsg_type != NLMSG_ERROR) { |
1558 | printk("expected NLMSG_ERROR, got %d" , (int)req.nh.nlmsg_type); |
1559 | goto out_close; |
1560 | } |
1561 | |
1562 | if (req.error) { |
1563 | printk("NLMSG_ERROR: %d: %s" , req.error, strerror(-req.error)); |
1564 | ret = req.error; |
1565 | goto out_close; |
1566 | } |
1567 | |
1568 | if (recv(xfrm_listen, &req, sizeof(req), 0) < 0) { |
1569 | pr_err("recv()" ); |
1570 | goto out_close; |
1571 | } |
1572 | |
1573 | if (req.expire.hard != 0x1) { |
1574 | printk("expire.hard is not set: %x" , req.expire.hard); |
1575 | goto out_close; |
1576 | } |
1577 | |
1578 | ret = KSFT_PASS; |
1579 | out_close: |
1580 | close(xfrm_listen); |
1581 | return ret; |
1582 | } |
1583 | |
1584 | static int xfrm_spdinfo_set_thresh(int xfrm_sock, uint32_t *seq, |
1585 | unsigned thresh4_l, unsigned thresh4_r, |
1586 | unsigned thresh6_l, unsigned thresh6_r, |
1587 | bool add_bad_attr) |
1588 | |
1589 | { |
1590 | struct { |
1591 | struct nlmsghdr nh; |
1592 | union { |
1593 | uint32_t unused; |
1594 | int error; |
1595 | }; |
1596 | char attrbuf[MAX_PAYLOAD]; |
1597 | } req; |
1598 | struct xfrmu_spdhthresh thresh; |
1599 | |
1600 | memset(&req, 0, sizeof(req)); |
1601 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.unused)); |
1602 | req.nh.nlmsg_type = XFRM_MSG_NEWSPDINFO; |
1603 | req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; |
1604 | req.nh.nlmsg_seq = (*seq)++; |
1605 | |
1606 | thresh.lbits = thresh4_l; |
1607 | thresh.rbits = thresh4_r; |
1608 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: XFRMA_SPD_IPV4_HTHRESH, payload: &thresh, size: sizeof(thresh))) |
1609 | return -1; |
1610 | |
1611 | thresh.lbits = thresh6_l; |
1612 | thresh.rbits = thresh6_r; |
1613 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: XFRMA_SPD_IPV6_HTHRESH, payload: &thresh, size: sizeof(thresh))) |
1614 | return -1; |
1615 | |
1616 | if (add_bad_attr) { |
1617 | BUILD_BUG_ON(XFRMA_IF_ID <= XFRMA_SPD_MAX + 1); |
1618 | if (rtattr_pack(nh: &req.nh, req_sz: sizeof(req), rta_type: XFRMA_IF_ID, NULL, size: 0)) { |
1619 | pr_err("adding attribute failed: no space" ); |
1620 | return -1; |
1621 | } |
1622 | } |
1623 | |
1624 | if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) { |
1625 | pr_err("send()" ); |
1626 | return -1; |
1627 | } |
1628 | |
1629 | if (recv(xfrm_sock, &req, sizeof(req), 0) < 0) { |
1630 | pr_err("recv()" ); |
1631 | return -1; |
1632 | } else if (req.nh.nlmsg_type != NLMSG_ERROR) { |
1633 | printk("expected NLMSG_ERROR, got %d" , (int)req.nh.nlmsg_type); |
1634 | return -1; |
1635 | } |
1636 | |
1637 | if (req.error) { |
1638 | printk("NLMSG_ERROR: %d: %s" , req.error, strerror(-req.error)); |
1639 | return -1; |
1640 | } |
1641 | |
1642 | return 0; |
1643 | } |
1644 | |
1645 | static int xfrm_spdinfo_attrs(int xfrm_sock, uint32_t *seq) |
1646 | { |
1647 | struct { |
1648 | struct nlmsghdr nh; |
1649 | union { |
1650 | uint32_t unused; |
1651 | int error; |
1652 | }; |
1653 | char attrbuf[MAX_PAYLOAD]; |
1654 | } req; |
1655 | |
1656 | if (xfrm_spdinfo_set_thresh(xfrm_sock, seq, thresh4_l: 32, thresh4_r: 31, thresh6_l: 120, thresh6_r: 16, add_bad_attr: false)) { |
1657 | pr_err("Can't set SPD HTHRESH" ); |
1658 | return KSFT_FAIL; |
1659 | } |
1660 | |
1661 | memset(&req, 0, sizeof(req)); |
1662 | |
1663 | req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.unused)); |
1664 | req.nh.nlmsg_type = XFRM_MSG_GETSPDINFO; |
1665 | req.nh.nlmsg_flags = NLM_F_REQUEST; |
1666 | req.nh.nlmsg_seq = (*seq)++; |
1667 | if (send(xfrm_sock, &req, req.nh.nlmsg_len, 0) < 0) { |
1668 | pr_err("send()" ); |
1669 | return KSFT_FAIL; |
1670 | } |
1671 | |
1672 | if (recv(xfrm_sock, &req, sizeof(req), 0) < 0) { |
1673 | pr_err("recv()" ); |
1674 | return KSFT_FAIL; |
1675 | } else if (req.nh.nlmsg_type == XFRM_MSG_NEWSPDINFO) { |
1676 | size_t len = NLMSG_PAYLOAD(&req.nh, sizeof(req.unused)); |
1677 | struct rtattr *attr = (void *)req.attrbuf; |
1678 | int got_thresh = 0; |
1679 | |
1680 | for (; RTA_OK(attr, len); attr = RTA_NEXT(attr, len)) { |
1681 | if (attr->rta_type == XFRMA_SPD_IPV4_HTHRESH) { |
1682 | struct xfrmu_spdhthresh *t = RTA_DATA(attr); |
1683 | |
1684 | got_thresh++; |
1685 | if (t->lbits != 32 || t->rbits != 31) { |
1686 | pr_err("thresh differ: %u, %u" , |
1687 | t->lbits, t->rbits); |
1688 | return KSFT_FAIL; |
1689 | } |
1690 | } |
1691 | if (attr->rta_type == XFRMA_SPD_IPV6_HTHRESH) { |
1692 | struct xfrmu_spdhthresh *t = RTA_DATA(attr); |
1693 | |
1694 | got_thresh++; |
1695 | if (t->lbits != 120 || t->rbits != 16) { |
1696 | pr_err("thresh differ: %u, %u" , |
1697 | t->lbits, t->rbits); |
1698 | return KSFT_FAIL; |
1699 | } |
1700 | } |
1701 | } |
1702 | if (got_thresh != 2) { |
1703 | pr_err("only %d thresh returned by XFRM_MSG_GETSPDINFO" , got_thresh); |
1704 | return KSFT_FAIL; |
1705 | } |
1706 | } else if (req.nh.nlmsg_type != NLMSG_ERROR) { |
1707 | printk("expected NLMSG_ERROR, got %d" , (int)req.nh.nlmsg_type); |
1708 | return KSFT_FAIL; |
1709 | } else { |
1710 | printk("NLMSG_ERROR: %d: %s" , req.error, strerror(-req.error)); |
1711 | return -1; |
1712 | } |
1713 | |
1714 | /* Restore the default */ |
1715 | if (xfrm_spdinfo_set_thresh(xfrm_sock, seq, thresh4_l: 32, thresh4_r: 32, thresh6_l: 128, thresh6_r: 128, add_bad_attr: false)) { |
1716 | pr_err("Can't restore SPD HTHRESH" ); |
1717 | return KSFT_FAIL; |
1718 | } |
1719 | |
1720 | /* |
1721 | * At this moment xfrm uses nlmsg_parse_deprecated(), which |
1722 | * implies NL_VALIDATE_LIBERAL - ignoring attributes with |
1723 | * (type > maxtype). nla_parse_depricated_strict() would enforce |
1724 | * it. Or even stricter nla_parse(). |
1725 | * Right now it's not expected to fail, but to be ignored. |
1726 | */ |
1727 | if (xfrm_spdinfo_set_thresh(xfrm_sock, seq, thresh4_l: 32, thresh4_r: 32, thresh6_l: 128, thresh6_r: 128, add_bad_attr: true)) |
1728 | return KSFT_PASS; |
1729 | |
1730 | return KSFT_PASS; |
1731 | } |
1732 | |
1733 | static int child_serv(int xfrm_sock, uint32_t *seq, |
1734 | unsigned int nr, int cmd_fd, void *buf, struct xfrm_desc *desc) |
1735 | { |
1736 | struct in_addr src, dst, tunsrc, tundst; |
1737 | struct test_desc msg; |
1738 | int ret = KSFT_FAIL; |
1739 | |
1740 | src = inet_makeaddr(INADDR_B, child_ip(nr)); |
1741 | dst = inet_makeaddr(INADDR_B, grchild_ip(nr)); |
1742 | tunsrc = inet_makeaddr(INADDR_A, child_ip(nr)); |
1743 | tundst = inet_makeaddr(INADDR_A, grchild_ip(nr)); |
1744 | |
1745 | /* UDP pinging without xfrm */ |
1746 | if (do_ping(cmd_fd, buf, page_size, src, true, 0, 0, udp_ping_send)) { |
1747 | printk("ping failed before setting xfrm" ); |
1748 | return KSFT_FAIL; |
1749 | } |
1750 | |
1751 | memset(&msg, 0, sizeof(msg)); |
1752 | msg.type = MSG_XFRM_PREPARE; |
1753 | memcpy(&msg.body.xfrm_desc, desc, sizeof(*desc)); |
1754 | write_msg(fd: cmd_fd, msg: &msg, exit_of_fail: 1); |
1755 | |
1756 | if (xfrm_prepare(xfrm_sock, seq, src, dst, tunsrc, tundst, proto: desc->proto)) { |
1757 | printk("failed to prepare xfrm" ); |
1758 | goto cleanup; |
1759 | } |
1760 | |
1761 | memset(&msg, 0, sizeof(msg)); |
1762 | msg.type = MSG_XFRM_ADD; |
1763 | memcpy(&msg.body.xfrm_desc, desc, sizeof(*desc)); |
1764 | write_msg(fd: cmd_fd, msg: &msg, exit_of_fail: 1); |
1765 | if (xfrm_set(xfrm_sock, seq, src, dst, tunsrc, tundst, desc)) { |
1766 | printk("failed to set xfrm" ); |
1767 | goto delete; |
1768 | } |
1769 | |
1770 | /* UDP pinging with xfrm tunnel */ |
1771 | if (do_ping(cmd_fd, buf, page_size, tunsrc, |
1772 | true, 0, 0, udp_ping_send)) { |
1773 | printk("ping failed for xfrm" ); |
1774 | goto delete; |
1775 | } |
1776 | |
1777 | ret = KSFT_PASS; |
1778 | delete: |
1779 | /* xfrm delete */ |
1780 | memset(&msg, 0, sizeof(msg)); |
1781 | msg.type = MSG_XFRM_DEL; |
1782 | memcpy(&msg.body.xfrm_desc, desc, sizeof(*desc)); |
1783 | write_msg(fd: cmd_fd, msg: &msg, exit_of_fail: 1); |
1784 | |
1785 | if (xfrm_delete(xfrm_sock, seq, src, dst, tunsrc, tundst, proto: desc->proto)) { |
1786 | printk("failed ping to remove xfrm" ); |
1787 | ret = KSFT_FAIL; |
1788 | } |
1789 | |
1790 | cleanup: |
1791 | memset(&msg, 0, sizeof(msg)); |
1792 | msg.type = MSG_XFRM_CLEANUP; |
1793 | memcpy(&msg.body.xfrm_desc, desc, sizeof(*desc)); |
1794 | write_msg(fd: cmd_fd, msg: &msg, exit_of_fail: 1); |
1795 | if (xfrm_cleanup(xfrm_sock, seq, src, dst, tunsrc, tundst)) { |
1796 | printk("failed ping to cleanup xfrm" ); |
1797 | ret = KSFT_FAIL; |
1798 | } |
1799 | return ret; |
1800 | } |
1801 | |
1802 | static int child_f(unsigned int nr, int test_desc_fd, int cmd_fd, void *buf) |
1803 | { |
1804 | struct xfrm_desc desc; |
1805 | struct test_desc msg; |
1806 | int xfrm_sock = -1; |
1807 | uint32_t seq; |
1808 | |
1809 | if (switch_ns(fd: nsfd_childa)) |
1810 | exit(KSFT_FAIL); |
1811 | |
1812 | if (netlink_sock(sock: &xfrm_sock, seq_nr: &seq, NETLINK_XFRM)) { |
1813 | printk("Failed to open xfrm netlink socket" ); |
1814 | exit(KSFT_FAIL); |
1815 | } |
1816 | |
1817 | /* Check that seq sock is ready, just for sure. */ |
1818 | memset(&msg, 0, sizeof(msg)); |
1819 | msg.type = MSG_ACK; |
1820 | write_msg(fd: cmd_fd, msg: &msg, exit_of_fail: 1); |
1821 | read_msg(fd: cmd_fd, msg: &msg, exit_of_fail: 1); |
1822 | if (msg.type != MSG_ACK) { |
1823 | printk("Ack failed" ); |
1824 | exit(KSFT_FAIL); |
1825 | } |
1826 | |
1827 | for (;;) { |
1828 | ssize_t received = read(test_desc_fd, &desc, sizeof(desc)); |
1829 | int ret; |
1830 | |
1831 | if (received == 0) /* EOF */ |
1832 | break; |
1833 | |
1834 | if (received != sizeof(desc)) { |
1835 | pr_err("read() returned %zd" , received); |
1836 | exit(KSFT_FAIL); |
1837 | } |
1838 | |
1839 | switch (desc.type) { |
1840 | case CREATE_TUNNEL: |
1841 | ret = child_serv(xfrm_sock, seq: &seq, nr, |
1842 | cmd_fd, buf, desc: &desc); |
1843 | break; |
1844 | case ALLOCATE_SPI: |
1845 | ret = xfrm_state_allocspi(xfrm_sock, seq: &seq, |
1846 | spi: -1, proto: desc.proto); |
1847 | break; |
1848 | case MONITOR_ACQUIRE: |
1849 | ret = xfrm_monitor_acquire(xfrm_sock, seq: &seq, nr); |
1850 | break; |
1851 | case EXPIRE_STATE: |
1852 | ret = xfrm_expire_state(xfrm_sock, seq: &seq, nr, desc: &desc); |
1853 | break; |
1854 | case EXPIRE_POLICY: |
1855 | ret = xfrm_expire_policy(xfrm_sock, seq: &seq, nr, desc: &desc); |
1856 | break; |
1857 | case SPDINFO_ATTRS: |
1858 | ret = xfrm_spdinfo_attrs(xfrm_sock, seq: &seq); |
1859 | break; |
1860 | default: |
1861 | printk("Unknown desc type %d" , desc.type); |
1862 | exit(KSFT_FAIL); |
1863 | } |
1864 | write_test_result(res: ret, d: &desc); |
1865 | } |
1866 | |
1867 | close(xfrm_sock); |
1868 | |
1869 | msg.type = MSG_EXIT; |
1870 | write_msg(fd: cmd_fd, msg: &msg, exit_of_fail: 1); |
1871 | exit(KSFT_PASS); |
1872 | } |
1873 | |
1874 | static void grand_child_serv(unsigned int nr, int cmd_fd, void *buf, |
1875 | struct test_desc *msg, int xfrm_sock, uint32_t *seq) |
1876 | { |
1877 | struct in_addr src, dst, tunsrc, tundst; |
1878 | bool tun_reply; |
1879 | struct xfrm_desc *desc = &msg->body.xfrm_desc; |
1880 | |
1881 | src = inet_makeaddr(INADDR_B, grchild_ip(nr)); |
1882 | dst = inet_makeaddr(INADDR_B, child_ip(nr)); |
1883 | tunsrc = inet_makeaddr(INADDR_A, grchild_ip(nr)); |
1884 | tundst = inet_makeaddr(INADDR_A, child_ip(nr)); |
1885 | |
1886 | switch (msg->type) { |
1887 | case MSG_EXIT: |
1888 | exit(KSFT_PASS); |
1889 | case MSG_ACK: |
1890 | write_msg(fd: cmd_fd, msg, exit_of_fail: 1); |
1891 | break; |
1892 | case MSG_PING: |
1893 | tun_reply = memcmp(&dst, &msg->body.ping.reply_ip, sizeof(in_addr_t)); |
1894 | /* UDP pinging without xfrm */ |
1895 | if (do_ping(cmd_fd, buf, page_size, tun_reply ? tunsrc : src, |
1896 | false, msg->body.ping.port, |
1897 | msg->body.ping.reply_ip, udp_ping_reply)) { |
1898 | printk("ping failed before setting xfrm" ); |
1899 | } |
1900 | break; |
1901 | case MSG_XFRM_PREPARE: |
1902 | if (xfrm_prepare(xfrm_sock, seq, src, dst, tunsrc, tundst, |
1903 | proto: desc->proto)) { |
1904 | xfrm_cleanup(xfrm_sock, seq, src, dst, tunsrc, tundst); |
1905 | printk("failed to prepare xfrm" ); |
1906 | } |
1907 | break; |
1908 | case MSG_XFRM_ADD: |
1909 | if (xfrm_set(xfrm_sock, seq, src, dst, tunsrc, tundst, desc)) { |
1910 | xfrm_cleanup(xfrm_sock, seq, src, dst, tunsrc, tundst); |
1911 | printk("failed to set xfrm" ); |
1912 | } |
1913 | break; |
1914 | case MSG_XFRM_DEL: |
1915 | if (xfrm_delete(xfrm_sock, seq, src, dst, tunsrc, tundst, |
1916 | proto: desc->proto)) { |
1917 | xfrm_cleanup(xfrm_sock, seq, src, dst, tunsrc, tundst); |
1918 | printk("failed to remove xfrm" ); |
1919 | } |
1920 | break; |
1921 | case MSG_XFRM_CLEANUP: |
1922 | if (xfrm_cleanup(xfrm_sock, seq, src, dst, tunsrc, tundst)) { |
1923 | printk("failed to cleanup xfrm" ); |
1924 | } |
1925 | break; |
1926 | default: |
1927 | printk("got unknown msg type %d" , msg->type); |
1928 | } |
1929 | } |
1930 | |
1931 | static int grand_child_f(unsigned int nr, int cmd_fd, void *buf) |
1932 | { |
1933 | struct test_desc msg; |
1934 | int xfrm_sock = -1; |
1935 | uint32_t seq; |
1936 | |
1937 | if (switch_ns(fd: nsfd_childb)) |
1938 | exit(KSFT_FAIL); |
1939 | |
1940 | if (netlink_sock(sock: &xfrm_sock, seq_nr: &seq, NETLINK_XFRM)) { |
1941 | printk("Failed to open xfrm netlink socket" ); |
1942 | exit(KSFT_FAIL); |
1943 | } |
1944 | |
1945 | do { |
1946 | read_msg(fd: cmd_fd, msg: &msg, exit_of_fail: 1); |
1947 | grand_child_serv(nr, cmd_fd, buf, msg: &msg, xfrm_sock, seq: &seq); |
1948 | } while (1); |
1949 | |
1950 | close(xfrm_sock); |
1951 | exit(KSFT_FAIL); |
1952 | } |
1953 | |
1954 | static int start_child(unsigned int nr, char *veth, int test_desc_fd[2]) |
1955 | { |
1956 | int cmd_sock[2]; |
1957 | void *data_map; |
1958 | pid_t child; |
1959 | |
1960 | if (init_child(nsfd: nsfd_childa, veth, child_ip(nr), grchild_ip(nr))) |
1961 | return -1; |
1962 | |
1963 | if (init_child(nsfd: nsfd_childb, veth, grchild_ip(nr), child_ip(nr))) |
1964 | return -1; |
1965 | |
1966 | child = fork(); |
1967 | if (child < 0) { |
1968 | pr_err("fork()" ); |
1969 | return -1; |
1970 | } else if (child) { |
1971 | /* in parent - selftest */ |
1972 | return switch_ns(fd: nsfd_parent); |
1973 | } |
1974 | |
1975 | if (close(test_desc_fd[1])) { |
1976 | pr_err("close()" ); |
1977 | return -1; |
1978 | } |
1979 | |
1980 | /* child */ |
1981 | data_map = mmap(0, page_size, PROT_READ | PROT_WRITE, |
1982 | MAP_SHARED | MAP_ANONYMOUS, -1, 0); |
1983 | if (data_map == MAP_FAILED) { |
1984 | pr_err("mmap()" ); |
1985 | return -1; |
1986 | } |
1987 | |
1988 | randomize_buffer(buf: data_map, buflen: page_size); |
1989 | |
1990 | if (socketpair(PF_LOCAL, SOCK_SEQPACKET, 0, cmd_sock)) { |
1991 | pr_err("socketpair()" ); |
1992 | return -1; |
1993 | } |
1994 | |
1995 | child = fork(); |
1996 | if (child < 0) { |
1997 | pr_err("fork()" ); |
1998 | return -1; |
1999 | } else if (child) { |
2000 | if (close(cmd_sock[0])) { |
2001 | pr_err("close()" ); |
2002 | return -1; |
2003 | } |
2004 | return child_f(nr, test_desc_fd: test_desc_fd[0], cmd_fd: cmd_sock[1], buf: data_map); |
2005 | } |
2006 | if (close(cmd_sock[1])) { |
2007 | pr_err("close()" ); |
2008 | return -1; |
2009 | } |
2010 | return grand_child_f(nr, cmd_fd: cmd_sock[0], buf: data_map); |
2011 | } |
2012 | |
2013 | static void exit_usage(char **argv) |
2014 | { |
2015 | printk("Usage: %s [nr_process]" , argv[0]); |
2016 | exit(KSFT_FAIL); |
2017 | } |
2018 | |
2019 | static int __write_desc(int test_desc_fd, struct xfrm_desc *desc) |
2020 | { |
2021 | ssize_t ret; |
2022 | |
2023 | ret = write(test_desc_fd, desc, sizeof(*desc)); |
2024 | |
2025 | if (ret == sizeof(*desc)) |
2026 | return 0; |
2027 | |
2028 | pr_err("Writing test's desc failed %ld" , ret); |
2029 | |
2030 | return -1; |
2031 | } |
2032 | |
2033 | static int write_desc(int proto, int test_desc_fd, |
2034 | char *a, char *e, char *c, char *ae) |
2035 | { |
2036 | struct xfrm_desc desc = {}; |
2037 | |
2038 | desc.type = CREATE_TUNNEL; |
2039 | desc.proto = proto; |
2040 | |
2041 | if (a) |
2042 | strncpy(p: desc.a_algo, q: a, ALGO_LEN - 1); |
2043 | if (e) |
2044 | strncpy(p: desc.e_algo, q: e, ALGO_LEN - 1); |
2045 | if (c) |
2046 | strncpy(p: desc.c_algo, q: c, ALGO_LEN - 1); |
2047 | if (ae) |
2048 | strncpy(p: desc.ae_algo, q: ae, ALGO_LEN - 1); |
2049 | |
2050 | return __write_desc(test_desc_fd, desc: &desc); |
2051 | } |
2052 | |
2053 | int proto_list[] = { IPPROTO_AH, IPPROTO_COMP, IPPROTO_ESP }; |
2054 | char *ah_list[] = { |
2055 | "digest_null" , "hmac(md5)" , "hmac(sha1)" , "hmac(sha256)" , |
2056 | "hmac(sha384)" , "hmac(sha512)" , "hmac(rmd160)" , |
2057 | "xcbc(aes)" , "cmac(aes)" |
2058 | }; |
2059 | char *comp_list[] = { |
2060 | "deflate" , |
2061 | #if 0 |
2062 | /* No compression backend realization */ |
2063 | "lzs" , "lzjh" |
2064 | #endif |
2065 | }; |
2066 | char *e_list[] = { |
2067 | "ecb(cipher_null)" , "cbc(des)" , "cbc(des3_ede)" , "cbc(cast5)" , |
2068 | "cbc(blowfish)" , "cbc(aes)" , "cbc(serpent)" , "cbc(camellia)" , |
2069 | "cbc(twofish)" , "rfc3686(ctr(aes))" |
2070 | }; |
2071 | char *ae_list[] = { |
2072 | #if 0 |
2073 | /* not implemented */ |
2074 | "rfc4106(gcm(aes))" , "rfc4309(ccm(aes))" , "rfc4543(gcm(aes))" , |
2075 | "rfc7539esp(chacha20,poly1305)" |
2076 | #endif |
2077 | }; |
2078 | |
2079 | const unsigned int proto_plan = ARRAY_SIZE(ah_list) + ARRAY_SIZE(comp_list) \ |
2080 | + (ARRAY_SIZE(ah_list) * ARRAY_SIZE(e_list)) \ |
2081 | + ARRAY_SIZE(ae_list); |
2082 | |
2083 | static int write_proto_plan(int fd, int proto) |
2084 | { |
2085 | unsigned int i; |
2086 | |
2087 | switch (proto) { |
2088 | case IPPROTO_AH: |
2089 | for (i = 0; i < ARRAY_SIZE(ah_list); i++) { |
2090 | if (write_desc(proto, test_desc_fd: fd, a: ah_list[i], e: 0, c: 0, ae: 0)) |
2091 | return -1; |
2092 | } |
2093 | break; |
2094 | case IPPROTO_COMP: |
2095 | for (i = 0; i < ARRAY_SIZE(comp_list); i++) { |
2096 | if (write_desc(proto, test_desc_fd: fd, a: 0, e: 0, c: comp_list[i], ae: 0)) |
2097 | return -1; |
2098 | } |
2099 | break; |
2100 | case IPPROTO_ESP: |
2101 | for (i = 0; i < ARRAY_SIZE(ah_list); i++) { |
2102 | int j; |
2103 | |
2104 | for (j = 0; j < ARRAY_SIZE(e_list); j++) { |
2105 | if (write_desc(proto, test_desc_fd: fd, a: ah_list[i], |
2106 | e: e_list[j], c: 0, ae: 0)) |
2107 | return -1; |
2108 | } |
2109 | } |
2110 | for (i = 0; i < ARRAY_SIZE(ae_list); i++) { |
2111 | if (write_desc(proto, test_desc_fd: fd, a: 0, e: 0, c: 0, ae: ae_list[i])) |
2112 | return -1; |
2113 | } |
2114 | break; |
2115 | default: |
2116 | printk("BUG: Specified unknown proto %d" , proto); |
2117 | return -1; |
2118 | } |
2119 | |
2120 | return 0; |
2121 | } |
2122 | |
2123 | /* |
2124 | * Some structures in xfrm uapi header differ in size between |
2125 | * 64-bit and 32-bit ABI: |
2126 | * |
2127 | * 32-bit UABI | 64-bit UABI |
2128 | * -------------------------------------|------------------------------------- |
2129 | * sizeof(xfrm_usersa_info) = 220 | sizeof(xfrm_usersa_info) = 224 |
2130 | * sizeof(xfrm_userpolicy_info) = 164 | sizeof(xfrm_userpolicy_info) = 168 |
2131 | * sizeof(xfrm_userspi_info) = 228 | sizeof(xfrm_userspi_info) = 232 |
2132 | * sizeof(xfrm_user_acquire) = 276 | sizeof(xfrm_user_acquire) = 280 |
2133 | * sizeof(xfrm_user_expire) = 224 | sizeof(xfrm_user_expire) = 232 |
2134 | * sizeof(xfrm_user_polexpire) = 168 | sizeof(xfrm_user_polexpire) = 176 |
2135 | * |
2136 | * Check the affected by the UABI difference structures. |
2137 | * Also, check translation for xfrm_set_spdinfo: it has it's own attributes |
2138 | * which needs to be correctly copied, but not translated. |
2139 | */ |
2140 | const unsigned int compat_plan = 5; |
2141 | static int write_compat_struct_tests(int test_desc_fd) |
2142 | { |
2143 | struct xfrm_desc desc = {}; |
2144 | |
2145 | desc.type = ALLOCATE_SPI; |
2146 | desc.proto = IPPROTO_AH; |
2147 | strncpy(p: desc.a_algo, q: ah_list[0], ALGO_LEN - 1); |
2148 | |
2149 | if (__write_desc(test_desc_fd, desc: &desc)) |
2150 | return -1; |
2151 | |
2152 | desc.type = MONITOR_ACQUIRE; |
2153 | if (__write_desc(test_desc_fd, desc: &desc)) |
2154 | return -1; |
2155 | |
2156 | desc.type = EXPIRE_STATE; |
2157 | if (__write_desc(test_desc_fd, desc: &desc)) |
2158 | return -1; |
2159 | |
2160 | desc.type = EXPIRE_POLICY; |
2161 | if (__write_desc(test_desc_fd, desc: &desc)) |
2162 | return -1; |
2163 | |
2164 | desc.type = SPDINFO_ATTRS; |
2165 | if (__write_desc(test_desc_fd, desc: &desc)) |
2166 | return -1; |
2167 | |
2168 | return 0; |
2169 | } |
2170 | |
2171 | static int write_test_plan(int test_desc_fd) |
2172 | { |
2173 | unsigned int i; |
2174 | pid_t child; |
2175 | |
2176 | child = fork(); |
2177 | if (child < 0) { |
2178 | pr_err("fork()" ); |
2179 | return -1; |
2180 | } |
2181 | if (child) { |
2182 | if (close(test_desc_fd)) |
2183 | printk("close(): %m" ); |
2184 | return 0; |
2185 | } |
2186 | |
2187 | if (write_compat_struct_tests(test_desc_fd)) |
2188 | exit(KSFT_FAIL); |
2189 | |
2190 | for (i = 0; i < ARRAY_SIZE(proto_list); i++) { |
2191 | if (write_proto_plan(fd: test_desc_fd, proto: proto_list[i])) |
2192 | exit(KSFT_FAIL); |
2193 | } |
2194 | |
2195 | exit(KSFT_PASS); |
2196 | } |
2197 | |
2198 | static int children_cleanup(void) |
2199 | { |
2200 | unsigned ret = KSFT_PASS; |
2201 | |
2202 | while (1) { |
2203 | int status; |
2204 | pid_t p = wait(&status); |
2205 | |
2206 | if ((p < 0) && errno == ECHILD) |
2207 | break; |
2208 | |
2209 | if (p < 0) { |
2210 | pr_err("wait()" ); |
2211 | return KSFT_FAIL; |
2212 | } |
2213 | |
2214 | if (!WIFEXITED(status)) { |
2215 | ret = KSFT_FAIL; |
2216 | continue; |
2217 | } |
2218 | |
2219 | if (WEXITSTATUS(status) == KSFT_FAIL) |
2220 | ret = KSFT_FAIL; |
2221 | } |
2222 | |
2223 | return ret; |
2224 | } |
2225 | |
2226 | typedef void (*print_res)(const char *, ...); |
2227 | |
2228 | static int check_results(void) |
2229 | { |
2230 | struct test_result tr = {}; |
2231 | struct xfrm_desc *d = &tr.desc; |
2232 | int ret = KSFT_PASS; |
2233 | |
2234 | while (1) { |
2235 | ssize_t received = read(results_fd[0], &tr, sizeof(tr)); |
2236 | print_res result; |
2237 | |
2238 | if (received == 0) /* EOF */ |
2239 | break; |
2240 | |
2241 | if (received != sizeof(tr)) { |
2242 | pr_err("read() returned %zd" , received); |
2243 | return KSFT_FAIL; |
2244 | } |
2245 | |
2246 | switch (tr.res) { |
2247 | case KSFT_PASS: |
2248 | result = ksft_test_result_pass; |
2249 | break; |
2250 | case KSFT_FAIL: |
2251 | default: |
2252 | result = ksft_test_result_fail; |
2253 | ret = KSFT_FAIL; |
2254 | } |
2255 | |
2256 | result(" %s: [%u, '%s', '%s', '%s', '%s', %u]\n" , |
2257 | desc_name[d->type], (unsigned int)d->proto, d->a_algo, |
2258 | d->e_algo, d->c_algo, d->ae_algo, d->icv_len); |
2259 | } |
2260 | |
2261 | return ret; |
2262 | } |
2263 | |
2264 | int main(int argc, char **argv) |
2265 | { |
2266 | long nr_process = 1; |
2267 | int route_sock = -1, ret = KSFT_SKIP; |
2268 | int test_desc_fd[2]; |
2269 | uint32_t route_seq; |
2270 | unsigned int i; |
2271 | |
2272 | if (argc > 2) |
2273 | exit_usage(argv); |
2274 | |
2275 | if (argc > 1) { |
2276 | char *endptr; |
2277 | |
2278 | errno = 0; |
2279 | nr_process = strtol(argv[1], &endptr, 10); |
2280 | if ((errno == ERANGE && (nr_process == LONG_MAX || nr_process == LONG_MIN)) |
2281 | || (errno != 0 && nr_process == 0) |
2282 | || (endptr == argv[1]) || (*endptr != '\0')) { |
2283 | printk("Failed to parse [nr_process]" ); |
2284 | exit_usage(argv); |
2285 | } |
2286 | |
2287 | if (nr_process > MAX_PROCESSES || nr_process < 1) { |
2288 | printk("nr_process should be between [1; %u]" , |
2289 | MAX_PROCESSES); |
2290 | exit_usage(argv); |
2291 | } |
2292 | } |
2293 | |
2294 | srand(time(NULL)); |
2295 | page_size = sysconf(_SC_PAGESIZE); |
2296 | if (page_size < 1) |
2297 | ksft_exit_skip(msg: "sysconf(): %m\n" ); |
2298 | |
2299 | if (pipe2(test_desc_fd, O_DIRECT) < 0) |
2300 | ksft_exit_skip(msg: "pipe(): %m\n" ); |
2301 | |
2302 | if (pipe2(results_fd, O_DIRECT) < 0) |
2303 | ksft_exit_skip(msg: "pipe(): %m\n" ); |
2304 | |
2305 | if (init_namespaces()) |
2306 | ksft_exit_skip(msg: "Failed to create namespaces\n" ); |
2307 | |
2308 | if (netlink_sock(sock: &route_sock, seq_nr: &route_seq, NETLINK_ROUTE)) |
2309 | ksft_exit_skip(msg: "Failed to open netlink route socket\n" ); |
2310 | |
2311 | for (i = 0; i < nr_process; i++) { |
2312 | char veth[VETH_LEN]; |
2313 | |
2314 | snprintf(buf: veth, VETH_LEN, VETH_FMT, i); |
2315 | |
2316 | if (veth_add(sock: route_sock, seq: route_seq++, peera: veth, ns_a: nsfd_childa, peerb: veth, ns_b: nsfd_childb)) { |
2317 | close(route_sock); |
2318 | ksft_exit_fail_msg(msg: "Failed to create veth device" ); |
2319 | } |
2320 | |
2321 | if (start_child(nr: i, veth, test_desc_fd)) { |
2322 | close(route_sock); |
2323 | ksft_exit_fail_msg(msg: "Child %u failed to start" , i); |
2324 | } |
2325 | } |
2326 | |
2327 | if (close(route_sock) || close(test_desc_fd[0]) || close(results_fd[1])) |
2328 | ksft_exit_fail_msg(msg: "close(): %m" ); |
2329 | |
2330 | ksft_set_plan(plan: proto_plan + compat_plan); |
2331 | |
2332 | if (write_test_plan(test_desc_fd: test_desc_fd[1])) |
2333 | ksft_exit_fail_msg(msg: "Failed to write test plan to pipe" ); |
2334 | |
2335 | ret = check_results(); |
2336 | |
2337 | if (children_cleanup() == KSFT_FAIL) |
2338 | exit(KSFT_FAIL); |
2339 | |
2340 | exit(ret); |
2341 | } |
2342 | |