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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
f579559b | 2 | |
b5bf6f64 | 3 | #include <linux/icmpv6.h> |
8973df5c | 4 | #include <linux/ipv6_route.h> |
228c3e21 | 5 | #include <linux/nexthop.h> |
b5bf6f64 | 6 | |
b5efdb8a | 7 | #include "alloc-util.h" |
fc2f9534 | 8 | #include "netlink-util.h" |
ca5ad760 | 9 | #include "networkd-ipv4ll.h" |
23f53b99 | 10 | #include "networkd-manager.h" |
e2263711 | 11 | #include "networkd-network.h" |
141318f7 | 12 | #include "networkd-nexthop.h" |
76c5a0f2 | 13 | #include "networkd-queue.h" |
6bedfcbb | 14 | #include "networkd-route.h" |
6bedfcbb | 15 | #include "parse-util.h" |
7a22312d | 16 | #include "string-table.h" |
07630cea | 17 | #include "string-util.h" |
d96edb2c | 18 | #include "strv.h" |
b297e0a7 | 19 | #include "strxcpyx.h" |
47d2d30d | 20 | #include "sysctl-util.h" |
c0d48bc5 | 21 | #include "vrf.h" |
f579559b | 22 | |
47d2d30d ZJS |
23 | #define ROUTES_DEFAULT_MAX_PER_FAMILY 4096U |
24 | ||
423c249c | 25 | static uint32_t link_get_vrf_table(const Link *link) { |
ac49887e YW |
26 | return link->network->vrf ? VRF(link->network->vrf)->table : RT_TABLE_MAIN; |
27 | } | |
28 | ||
423c249c | 29 | uint32_t link_get_dhcp_route_table(const Link *link) { |
ac49887e YW |
30 | /* When the interface is part of an VRF use the VRFs routing table, unless |
31 | * another table is explicitly specified. */ | |
32 | if (link->network->dhcp_route_table_set) | |
33 | return link->network->dhcp_route_table; | |
34 | return link_get_vrf_table(link); | |
35 | } | |
36 | ||
423c249c | 37 | uint32_t link_get_ipv6_accept_ra_route_table(const Link *link) { |
ac49887e YW |
38 | if (link->network->ipv6_accept_ra_route_table_set) |
39 | return link->network->ipv6_accept_ra_route_table; | |
40 | return link_get_vrf_table(link); | |
41 | } | |
42 | ||
74154c2e YW |
43 | static const char * const route_type_table[__RTN_MAX] = { |
44 | [RTN_UNICAST] = "unicast", | |
45 | [RTN_LOCAL] = "local", | |
46 | [RTN_BROADCAST] = "broadcast", | |
47 | [RTN_ANYCAST] = "anycast", | |
48 | [RTN_MULTICAST] = "multicast", | |
49 | [RTN_BLACKHOLE] = "blackhole", | |
50 | [RTN_UNREACHABLE] = "unreachable", | |
51 | [RTN_PROHIBIT] = "prohibit", | |
52 | [RTN_THROW] = "throw", | |
53 | [RTN_NAT] = "nat", | |
54 | [RTN_XRESOLVE] = "xresolve", | |
55 | }; | |
56 | ||
57 | assert_cc(__RTN_MAX <= UCHAR_MAX); | |
58 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(route_type, int); | |
59 | ||
60 | static const char * const route_scope_table[] = { | |
61 | [RT_SCOPE_UNIVERSE] = "global", | |
62 | [RT_SCOPE_SITE] = "site", | |
63 | [RT_SCOPE_LINK] = "link", | |
64 | [RT_SCOPE_HOST] = "host", | |
65 | [RT_SCOPE_NOWHERE] = "nowhere", | |
66 | }; | |
67 | ||
e4ffe103 YW |
68 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(route_scope, int); |
69 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(route_scope, int, UINT8_MAX); | |
74154c2e YW |
70 | |
71 | static const char * const route_table_table[] = { | |
72 | [RT_TABLE_DEFAULT] = "default", | |
73 | [RT_TABLE_MAIN] = "main", | |
74 | [RT_TABLE_LOCAL] = "local", | |
75 | }; | |
76 | ||
552b90a2 | 77 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(route_table, int); |
74154c2e | 78 | |
552b90a2 YW |
79 | int manager_get_route_table_from_string(const Manager *m, const char *s, uint32_t *ret) { |
80 | uint32_t t; | |
81 | int r; | |
82 | ||
83 | assert(m); | |
84 | assert(s); | |
85 | assert(ret); | |
86 | ||
87 | r = route_table_from_string(s); | |
88 | if (r >= 0) { | |
89 | *ret = (uint32_t) r; | |
90 | return 0; | |
91 | } | |
92 | ||
93 | t = PTR_TO_UINT32(hashmap_get(m->route_table_numbers_by_name, s)); | |
94 | if (t != 0) { | |
95 | *ret = t; | |
96 | return 0; | |
97 | } | |
98 | ||
99 | r = safe_atou32(s, &t); | |
100 | if (r < 0) | |
101 | return r; | |
102 | ||
103 | if (t == 0) | |
104 | return -ERANGE; | |
105 | ||
106 | *ret = t; | |
107 | return 0; | |
108 | } | |
109 | ||
110 | int manager_get_route_table_to_string(const Manager *m, uint32_t table, char **ret) { | |
111 | _cleanup_free_ char *str = NULL; | |
74154c2e | 112 | const char *s; |
552b90a2 YW |
113 | |
114 | assert(m); | |
115 | assert(ret); | |
116 | ||
117 | if (table == 0) | |
118 | return -EINVAL; | |
74154c2e YW |
119 | |
120 | s = route_table_to_string(table); | |
552b90a2 YW |
121 | if (!s) |
122 | s = hashmap_get(m->route_table_names_by_number, UINT32_TO_PTR(table)); | |
74154c2e | 123 | |
552b90a2 YW |
124 | if (s) { |
125 | /* Currently, this is only used in debugging logs. To not confuse any bug | |
126 | * reports, let's include the table number. */ | |
127 | if (asprintf(&str, "%s(%" PRIu32 ")", s, table) < 0) | |
128 | return -ENOMEM; | |
129 | ||
130 | *ret = TAKE_PTR(str); | |
131 | return 0; | |
132 | } | |
133 | ||
134 | if (asprintf(&str, "%" PRIu32, table) < 0) | |
135 | return -ENOMEM; | |
136 | ||
137 | *ret = TAKE_PTR(str); | |
138 | return 0; | |
74154c2e YW |
139 | } |
140 | ||
141 | static const char * const route_protocol_table[] = { | |
142 | [RTPROT_KERNEL] = "kernel", | |
143 | [RTPROT_BOOT] = "boot", | |
144 | [RTPROT_STATIC] = "static", | |
145 | }; | |
146 | ||
e4ffe103 | 147 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(route_protocol, int, UINT8_MAX); |
74154c2e YW |
148 | |
149 | static const char * const route_protocol_full_table[] = { | |
150 | [RTPROT_REDIRECT] = "redirect", | |
151 | [RTPROT_KERNEL] = "kernel", | |
152 | [RTPROT_BOOT] = "boot", | |
153 | [RTPROT_STATIC] = "static", | |
154 | [RTPROT_GATED] = "gated", | |
155 | [RTPROT_RA] = "ra", | |
156 | [RTPROT_MRT] = "mrt", | |
157 | [RTPROT_ZEBRA] = "zebra", | |
158 | [RTPROT_BIRD] = "bird", | |
159 | [RTPROT_DNROUTED] = "dnrouted", | |
160 | [RTPROT_XORP] = "xorp", | |
161 | [RTPROT_NTK] = "ntk", | |
162 | [RTPROT_DHCP] = "dhcp", | |
163 | [RTPROT_MROUTED] = "mrouted", | |
164 | [RTPROT_BABEL] = "babel", | |
165 | [RTPROT_BGP] = "bgp", | |
166 | [RTPROT_ISIS] = "isis", | |
167 | [RTPROT_OSPF] = "ospf", | |
168 | [RTPROT_RIP] = "rip", | |
169 | [RTPROT_EIGRP] = "eigrp", | |
170 | }; | |
171 | ||
e4ffe103 | 172 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(route_protocol_full, int, UINT8_MAX); |
74154c2e | 173 | |
47d2d30d ZJS |
174 | static unsigned routes_max(void) { |
175 | static thread_local unsigned cached = 0; | |
47d2d30d ZJS |
176 | _cleanup_free_ char *s4 = NULL, *s6 = NULL; |
177 | unsigned val4 = ROUTES_DEFAULT_MAX_PER_FAMILY, val6 = ROUTES_DEFAULT_MAX_PER_FAMILY; | |
178 | ||
179 | if (cached > 0) | |
180 | return cached; | |
181 | ||
778c8795 YW |
182 | if (sysctl_read_ip_property(AF_INET, NULL, "route/max_size", &s4) >= 0) |
183 | if (safe_atou(s4, &val4) >= 0 && val4 == 2147483647U) | |
47d2d30d ZJS |
184 | /* This is the default "no limit" value in the kernel */ |
185 | val4 = ROUTES_DEFAULT_MAX_PER_FAMILY; | |
47d2d30d | 186 | |
778c8795 | 187 | if (sysctl_read_ip_property(AF_INET6, NULL, "route/max_size", &s6) >= 0) |
47d2d30d | 188 | (void) safe_atou(s6, &val6); |
47d2d30d ZJS |
189 | |
190 | cached = MAX(ROUTES_DEFAULT_MAX_PER_FAMILY, val4) + | |
191 | MAX(ROUTES_DEFAULT_MAX_PER_FAMILY, val6); | |
192 | return cached; | |
193 | } | |
8c34b963 | 194 | |
ed9e361a | 195 | int route_new(Route **ret) { |
8e766630 | 196 | _cleanup_(route_freep) Route *route = NULL; |
f0213e37 | 197 | |
17f9c355 | 198 | route = new(Route, 1); |
f0213e37 TG |
199 | if (!route) |
200 | return -ENOMEM; | |
201 | ||
17f9c355 YW |
202 | *route = (Route) { |
203 | .family = AF_UNSPEC, | |
204 | .scope = RT_SCOPE_UNIVERSE, | |
205 | .protocol = RTPROT_UNSPEC, | |
206 | .type = RTN_UNICAST, | |
207 | .table = RT_TABLE_MAIN, | |
208 | .lifetime = USEC_INFINITY, | |
209 | .quickack = -1, | |
633c7258 | 210 | .fast_open_no_cookie = -1, |
54901fd2 | 211 | .gateway_onlink = -1, |
9b88f20a | 212 | .ttl_propagate = -1, |
17f9c355 | 213 | }; |
f0213e37 | 214 | |
1cc6c93a | 215 | *ret = TAKE_PTR(route); |
f0213e37 TG |
216 | |
217 | return 0; | |
218 | } | |
219 | ||
9560e5b3 | 220 | static int route_new_static(Network *network, const char *filename, unsigned section_line, Route **ret) { |
8e766630 LP |
221 | _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; |
222 | _cleanup_(route_freep) Route *route = NULL; | |
f0213e37 | 223 | int r; |
f579559b | 224 | |
8c34b963 LP |
225 | assert(network); |
226 | assert(ret); | |
2a54a044 YW |
227 | assert(filename); |
228 | assert(section_line > 0); | |
f4859fc7 | 229 | |
2a54a044 YW |
230 | r = network_config_section_new(filename, section_line, &n); |
231 | if (r < 0) | |
232 | return r; | |
6ae115c1 | 233 | |
2a54a044 YW |
234 | route = hashmap_get(network->routes_by_section, n); |
235 | if (route) { | |
236 | *ret = TAKE_PTR(route); | |
237 | return 0; | |
6ae115c1 TG |
238 | } |
239 | ||
2a54a044 | 240 | if (hashmap_size(network->routes_by_section) >= routes_max()) |
8c34b963 LP |
241 | return -E2BIG; |
242 | ||
ed9e361a | 243 | r = route_new(&route); |
f0213e37 TG |
244 | if (r < 0) |
245 | return r; | |
801bd9e8 | 246 | |
ed9e361a | 247 | route->protocol = RTPROT_STATIC; |
0f7f2769 | 248 | route->network = network; |
2a54a044 | 249 | route->section = TAKE_PTR(n); |
cacc1dbf | 250 | |
ecd80ce2 | 251 | r = hashmap_ensure_put(&network->routes_by_section, &network_config_hash_ops, route->section, route); |
2a54a044 YW |
252 | if (r < 0) |
253 | return r; | |
6ae115c1 | 254 | |
1cc6c93a | 255 | *ret = TAKE_PTR(route); |
f579559b TG |
256 | return 0; |
257 | } | |
258 | ||
169948e9 | 259 | Route *route_free(Route *route) { |
f579559b | 260 | if (!route) |
169948e9 | 261 | return NULL; |
f579559b | 262 | |
f048a16b | 263 | if (route->network) { |
2a54a044 YW |
264 | assert(route->section); |
265 | hashmap_remove(route->network->routes_by_section, route->section); | |
f048a16b | 266 | } |
6ae115c1 | 267 | |
fd45e522 ZJS |
268 | network_config_section_free(route->section); |
269 | ||
1c8e710c | 270 | if (route->link) { |
50550722 | 271 | NDiscRoute *n; |
50550722 | 272 | |
1c8e710c TG |
273 | set_remove(route->link->routes, route); |
274 | set_remove(route->link->routes_foreign, route); | |
6e537f62 YW |
275 | set_remove(route->link->dhcp_routes, route); |
276 | set_remove(route->link->dhcp_routes_old, route); | |
1633c457 YW |
277 | set_remove(route->link->dhcp6_routes, route); |
278 | set_remove(route->link->dhcp6_routes_old, route); | |
279 | set_remove(route->link->dhcp6_pd_routes, route); | |
280 | set_remove(route->link->dhcp6_pd_routes_old, route); | |
90e74a66 | 281 | SET_FOREACH(n, route->link->ndisc_routes) |
50550722 YW |
282 | if (n->route == route) |
283 | free(set_remove(route->link->ndisc_routes, n)); | |
1c8e710c TG |
284 | } |
285 | ||
ad208fac YW |
286 | if (route->manager) { |
287 | set_remove(route->manager->routes, route); | |
288 | set_remove(route->manager->routes_foreign, route); | |
289 | } | |
290 | ||
e8f52f3c | 291 | ordered_set_free_with_destructor(route->multipath_routes, multipath_route_free); |
6ff5cc6b | 292 | |
f833694d TG |
293 | sd_event_source_unref(route->expire); |
294 | ||
169948e9 | 295 | return mfree(route); |
f579559b TG |
296 | } |
297 | ||
501b09db | 298 | void route_hash_func(const Route *route, struct siphash *state) { |
bb7ae737 TG |
299 | assert(route); |
300 | ||
301 | siphash24_compress(&route->family, sizeof(route->family), state); | |
302 | ||
01aaa3df YW |
303 | switch (route->family) { |
304 | case AF_INET: | |
305 | case AF_INET6: | |
01aaa3df | 306 | siphash24_compress(&route->dst_prefixlen, sizeof(route->dst_prefixlen), state); |
67e05dd8 ZJS |
307 | siphash24_compress(&route->dst, FAMILY_ADDRESS_SIZE(route->family), state); |
308 | ||
01aaa3df | 309 | siphash24_compress(&route->src_prefixlen, sizeof(route->src_prefixlen), state); |
67e05dd8 ZJS |
310 | siphash24_compress(&route->src, FAMILY_ADDRESS_SIZE(route->family), state); |
311 | ||
6dd53981 | 312 | siphash24_compress(&route->gw_family, sizeof(route->gw_family), state); |
40075951 | 313 | if (IN_SET(route->gw_family, AF_INET, AF_INET6)) { |
6dd53981 | 314 | siphash24_compress(&route->gw, FAMILY_ADDRESS_SIZE(route->gw_family), state); |
40075951 YW |
315 | siphash24_compress(&route->gw_weight, sizeof(route->gw_weight), state); |
316 | } | |
67e05dd8 | 317 | |
01aaa3df YW |
318 | siphash24_compress(&route->prefsrc, FAMILY_ADDRESS_SIZE(route->family), state); |
319 | ||
320 | siphash24_compress(&route->tos, sizeof(route->tos), state); | |
321 | siphash24_compress(&route->priority, sizeof(route->priority), state); | |
322 | siphash24_compress(&route->table, sizeof(route->table), state); | |
323 | siphash24_compress(&route->protocol, sizeof(route->protocol), state); | |
324 | siphash24_compress(&route->scope, sizeof(route->scope), state); | |
325 | siphash24_compress(&route->type, sizeof(route->type), state); | |
67e05dd8 | 326 | |
fa3e401a YW |
327 | siphash24_compress(&route->initcwnd, sizeof(route->initcwnd), state); |
328 | siphash24_compress(&route->initrwnd, sizeof(route->initrwnd), state); | |
01aaa3df | 329 | |
007cac09 | 330 | siphash24_compress(&route->advmss, sizeof(route->advmss), state); |
324e3422 | 331 | siphash24_compress(&route->nexthop_id, sizeof(route->nexthop_id), state); |
007cac09 | 332 | |
01aaa3df YW |
333 | break; |
334 | default: | |
335 | /* treat any other address family as AF_UNSPEC */ | |
336 | break; | |
337 | } | |
338 | } | |
339 | ||
501b09db | 340 | int route_compare_func(const Route *a, const Route *b) { |
01aaa3df YW |
341 | int r; |
342 | ||
343 | r = CMP(a->family, b->family); | |
344 | if (r != 0) | |
345 | return r; | |
346 | ||
347 | switch (a->family) { | |
348 | case AF_INET: | |
349 | case AF_INET6: | |
350 | r = CMP(a->dst_prefixlen, b->dst_prefixlen); | |
351 | if (r != 0) | |
352 | return r; | |
353 | ||
67e05dd8 ZJS |
354 | r = memcmp(&a->dst, &b->dst, FAMILY_ADDRESS_SIZE(a->family)); |
355 | if (r != 0) | |
356 | return r; | |
357 | ||
01aaa3df YW |
358 | r = CMP(a->src_prefixlen, b->src_prefixlen); |
359 | if (r != 0) | |
360 | return r; | |
361 | ||
67e05dd8 | 362 | r = memcmp(&a->src, &b->src, FAMILY_ADDRESS_SIZE(a->family)); |
01aaa3df YW |
363 | if (r != 0) |
364 | return r; | |
365 | ||
6dd53981 | 366 | r = CMP(a->gw_family, b->gw_family); |
01aaa3df YW |
367 | if (r != 0) |
368 | return r; | |
369 | ||
6dd53981 YW |
370 | if (IN_SET(a->gw_family, AF_INET, AF_INET6)) { |
371 | r = memcmp(&a->gw, &b->gw, FAMILY_ADDRESS_SIZE(a->family)); | |
372 | if (r != 0) | |
373 | return r; | |
40075951 YW |
374 | |
375 | r = CMP(a->gw_weight, b->gw_weight); | |
376 | if (r != 0) | |
377 | return r; | |
6dd53981 YW |
378 | } |
379 | ||
67e05dd8 | 380 | r = memcmp(&a->prefsrc, &b->prefsrc, FAMILY_ADDRESS_SIZE(a->family)); |
01aaa3df YW |
381 | if (r != 0) |
382 | return r; | |
383 | ||
67e05dd8 | 384 | r = CMP(a->tos, b->tos); |
01aaa3df YW |
385 | if (r != 0) |
386 | return r; | |
387 | ||
67e05dd8 | 388 | r = CMP(a->priority, b->priority); |
01aaa3df YW |
389 | if (r != 0) |
390 | return r; | |
391 | ||
67e05dd8 | 392 | r = CMP(a->table, b->table); |
01aaa3df YW |
393 | if (r != 0) |
394 | return r; | |
395 | ||
67e05dd8 | 396 | r = CMP(a->protocol, b->protocol); |
fa3e401a YW |
397 | if (r != 0) |
398 | return r; | |
399 | ||
67e05dd8 | 400 | r = CMP(a->scope, b->scope); |
fa3e401a YW |
401 | if (r != 0) |
402 | return r; | |
403 | ||
67e05dd8 | 404 | r = CMP(a->type, b->type); |
01aaa3df YW |
405 | if (r != 0) |
406 | return r; | |
407 | ||
67e05dd8 | 408 | r = CMP(a->initcwnd, b->initcwnd); |
01aaa3df YW |
409 | if (r != 0) |
410 | return r; | |
411 | ||
67e05dd8 | 412 | r = CMP(a->initrwnd, b->initrwnd); |
01aaa3df YW |
413 | if (r != 0) |
414 | return r; | |
415 | ||
007cac09 SS |
416 | r = CMP(a->advmss, b->advmss); |
417 | if (r != 0) | |
418 | return r; | |
419 | ||
324e3422 YW |
420 | r = CMP(a->nexthop_id, b->nexthop_id); |
421 | if (r != 0) | |
422 | return r; | |
423 | ||
67e05dd8 | 424 | return 0; |
01aaa3df YW |
425 | default: |
426 | /* treat any other address family as AF_UNSPEC */ | |
427 | return 0; | |
428 | } | |
429 | } | |
430 | ||
431 | DEFINE_HASH_OPS_WITH_KEY_DESTRUCTOR( | |
c077a205 | 432 | route_hash_ops, |
01aaa3df | 433 | Route, |
c077a205 YW |
434 | route_hash_func, |
435 | route_compare_func, | |
01aaa3df YW |
436 | route_free); |
437 | ||
423c249c | 438 | static bool route_equal(const Route *r1, const Route *r2) { |
7ecf0c3e TJ |
439 | if (r1 == r2) |
440 | return true; | |
441 | ||
442 | if (!r1 || !r2) | |
443 | return false; | |
444 | ||
445 | return route_compare_func(r1, r2) == 0; | |
446 | } | |
447 | ||
423c249c | 448 | static int route_get(const Manager *manager, const Link *link, const Route *in, Route **ret) { |
f1368755 | 449 | Route *existing; |
1b566071 | 450 | |
ad208fac | 451 | assert(manager || link); |
f1368755 | 452 | assert(in); |
1c8e710c | 453 | |
484555f3 YW |
454 | existing = set_get(link ? link->routes : manager->routes, in); |
455 | if (existing) { | |
456 | if (ret) | |
457 | *ret = existing; | |
458 | return 1; | |
459 | } | |
ad208fac | 460 | |
484555f3 YW |
461 | existing = set_get(link ? link->routes_foreign : manager->routes_foreign, in); |
462 | if (existing) { | |
463 | if (ret) | |
464 | *ret = existing; | |
465 | return 0; | |
1b566071 | 466 | } |
1c8e710c | 467 | |
1b566071 | 468 | return -ENOENT; |
1c8e710c TG |
469 | } |
470 | ||
228c3e21 | 471 | static void route_copy(Route *dest, const Route *src, const MultipathRoute *m, const NextHop *nh, uint8_t nh_weight) { |
f9bb3338 YW |
472 | assert(dest); |
473 | assert(src); | |
474 | ||
484555f3 YW |
475 | /* This only copies entries used by the above hash and compare functions. */ |
476 | ||
f9bb3338 YW |
477 | dest->family = src->family; |
478 | dest->src = src->src; | |
479 | dest->src_prefixlen = src->src_prefixlen; | |
480 | dest->dst = src->dst; | |
481 | dest->dst_prefixlen = src->dst_prefixlen; | |
482 | dest->prefsrc = src->prefsrc; | |
483 | dest->scope = src->scope; | |
484 | dest->protocol = src->protocol; | |
30f10837 YW |
485 | if (nh && nh->blackhole) |
486 | dest->type = RTN_BLACKHOLE; | |
487 | else | |
488 | dest->type = src->type; | |
f9bb3338 YW |
489 | dest->tos = src->tos; |
490 | dest->priority = src->priority; | |
491 | dest->table = src->table; | |
492 | dest->initcwnd = src->initcwnd; | |
493 | dest->initrwnd = src->initrwnd; | |
494 | dest->lifetime = src->lifetime; | |
324e3422 YW |
495 | dest->advmss = src->advmss; |
496 | dest->nexthop_id = src->nexthop_id; | |
f9bb3338 | 497 | |
324e3422 | 498 | if (nh) { |
228c3e21 YW |
499 | assert(hashmap_isempty(nh->group)); |
500 | ||
324e3422 YW |
501 | dest->gw_family = nh->family; |
502 | dest->gw = nh->gw; | |
228c3e21 | 503 | dest->gw_weight = nh_weight != UINT8_MAX ? nh_weight : src->gw_weight; |
324e3422 | 504 | } else if (m) { |
f9bb3338 YW |
505 | dest->gw_family = m->gateway.family; |
506 | dest->gw = m->gateway.address; | |
507 | dest->gw_weight = m->weight; | |
508 | } else { | |
509 | dest->gw_family = src->gw_family; | |
510 | dest->gw = src->gw; | |
40075951 | 511 | dest->gw_weight = src->gw_weight; |
f9bb3338 YW |
512 | } |
513 | } | |
889b550f | 514 | |
c0bd9eb1 YW |
515 | int route_dup(const Route *src, Route **ret) { |
516 | _cleanup_(route_freep) Route *dest = NULL; | |
517 | MultipathRoute *m; | |
518 | int r; | |
519 | ||
520 | assert(src); | |
521 | assert(ret); | |
522 | ||
523 | dest = newdup(Route, src, 1); | |
524 | if (!dest) | |
525 | return -ENOMEM; | |
526 | ||
527 | /* Unset all pointers */ | |
528 | dest->network = NULL; | |
529 | dest->section = NULL; | |
530 | dest->link = NULL; | |
531 | dest->manager = NULL; | |
532 | dest->multipath_routes = NULL; | |
533 | dest->expire = NULL; | |
534 | ||
535 | ORDERED_SET_FOREACH(m, src->multipath_routes) { | |
536 | _cleanup_(multipath_route_freep) MultipathRoute *n = NULL; | |
537 | ||
538 | r = multipath_route_dup(m, &n); | |
539 | if (r < 0) | |
540 | return r; | |
541 | ||
542 | r = ordered_set_ensure_put(&dest->multipath_routes, NULL, n); | |
543 | if (r < 0) | |
544 | return r; | |
545 | ||
546 | TAKE_PTR(n); | |
547 | } | |
548 | ||
549 | *ret = TAKE_PTR(dest); | |
550 | return 0; | |
551 | } | |
552 | ||
cc17f75f | 553 | static int route_add_internal(Manager *manager, Link *link, Set **routes, const Route *in, Route **ret) { |
8e766630 | 554 | _cleanup_(route_freep) Route *route = NULL; |
1c8e710c TG |
555 | int r; |
556 | ||
ad208fac | 557 | assert(manager || link); |
1c8e710c | 558 | assert(routes); |
f1368755 | 559 | assert(in); |
1c8e710c TG |
560 | |
561 | r = route_new(&route); | |
562 | if (r < 0) | |
563 | return r; | |
564 | ||
228c3e21 | 565 | route_copy(route, in, NULL, NULL, UINT8_MAX); |
1c8e710c | 566 | |
de7fef4b | 567 | r = set_ensure_put(routes, &route_hash_ops, route); |
1c8e710c TG |
568 | if (r < 0) |
569 | return r; | |
75a302b5 YW |
570 | if (r == 0) |
571 | return -EEXIST; | |
1c8e710c TG |
572 | |
573 | route->link = link; | |
ad208fac | 574 | route->manager = manager; |
1c8e710c TG |
575 | |
576 | if (ret) | |
577 | *ret = route; | |
578 | ||
579 | route = NULL; | |
580 | ||
581 | return 0; | |
582 | } | |
583 | ||
423c249c | 584 | static int route_add_foreign(Manager *manager, Link *link, const Route *in, Route **ret) { |
ad208fac | 585 | assert(manager || link); |
cc17f75f | 586 | return route_add_internal(manager, link, link ? &link->routes_foreign : &manager->routes_foreign, in, ret); |
1c8e710c TG |
587 | } |
588 | ||
228c3e21 | 589 | static int route_add(Manager *manager, Link *link, const Route *in, const MultipathRoute *m, const NextHop *nh, uint8_t nh_weight, Route **ret) { |
cc17f75f | 590 | _cleanup_(route_freep) Route *tmp = NULL; |
1c8e710c TG |
591 | Route *route; |
592 | int r; | |
593 | ||
ad208fac YW |
594 | assert(manager || link); |
595 | assert(in); | |
596 | ||
324e3422 | 597 | if (nh) { |
228c3e21 YW |
598 | assert(hashmap_isempty(nh->group)); |
599 | ||
324e3422 YW |
600 | r = route_new(&tmp); |
601 | if (r < 0) | |
602 | return r; | |
603 | ||
228c3e21 | 604 | route_copy(tmp, in, NULL, nh, nh_weight); |
324e3422 YW |
605 | in = tmp; |
606 | } else if (m) { | |
cc17f75f YW |
607 | assert(link && (m->ifindex == 0 || m->ifindex == link->ifindex)); |
608 | ||
609 | r = route_new(&tmp); | |
610 | if (r < 0) | |
611 | return r; | |
612 | ||
228c3e21 | 613 | route_copy(tmp, in, m, NULL, UINT8_MAX); |
cc17f75f YW |
614 | in = tmp; |
615 | } | |
616 | ||
ad208fac | 617 | r = route_get(manager, link, in, &route); |
1c8e710c TG |
618 | if (r == -ENOENT) { |
619 | /* Route does not exist, create a new one */ | |
cc17f75f | 620 | r = route_add_internal(manager, link, link ? &link->routes : &manager->routes, in, &route); |
1c8e710c TG |
621 | if (r < 0) |
622 | return r; | |
623 | } else if (r == 0) { | |
624 | /* Take over a foreign route */ | |
484555f3 YW |
625 | r = set_ensure_put(link ? &link->routes : &manager->routes, &route_hash_ops, route); |
626 | if (r < 0) | |
627 | return r; | |
ad208fac | 628 | |
484555f3 | 629 | set_remove(link ? link->routes_foreign : manager->routes_foreign, route); |
1c8e710c TG |
630 | } else if (r == 1) { |
631 | /* Route exists, do nothing */ | |
632 | ; | |
633 | } else | |
634 | return r; | |
635 | ||
856e309d MC |
636 | if (ret) |
637 | *ret = route; | |
7b3a7581 | 638 | return 0; |
1c8e710c TG |
639 | } |
640 | ||
6c252588 YW |
641 | static bool route_type_is_reject(const Route *route) { |
642 | assert(route); | |
643 | ||
644 | return IN_SET(route->type, RTN_UNREACHABLE, RTN_PROHIBIT, RTN_BLACKHOLE, RTN_THROW); | |
645 | } | |
646 | ||
228c3e21 YW |
647 | static int link_has_route_one(Link *link, const Route *route, const NextHop *nh, uint8_t nh_weight) { |
648 | _cleanup_(route_freep) Route *tmp = NULL; | |
649 | int r; | |
650 | ||
651 | assert(link); | |
652 | assert(route); | |
653 | assert(nh); | |
654 | ||
655 | r = route_new(&tmp); | |
656 | if (r < 0) | |
657 | return r; | |
658 | ||
659 | route_copy(tmp, route, NULL, nh, nh_weight); | |
660 | ||
661 | if (route_type_is_reject(route) || (nh && nh->blackhole)) | |
662 | return route_get(link->manager, NULL, tmp, NULL) >= 0; | |
663 | else | |
664 | return route_get(NULL, link, tmp, NULL) >= 0; | |
665 | } | |
666 | ||
884a63d7 YW |
667 | int link_has_route(Link *link, const Route *route) { |
668 | MultipathRoute *m; | |
669 | int r; | |
670 | ||
671 | assert(link); | |
672 | assert(route); | |
673 | ||
674 | if (route->nexthop_id > 0) { | |
228c3e21 | 675 | struct nexthop_grp *nhg; |
884a63d7 YW |
676 | NextHop *nh; |
677 | ||
678 | if (manager_get_nexthop_by_id(link->manager, route->nexthop_id, &nh) < 0) | |
679 | return false; | |
680 | ||
228c3e21 YW |
681 | if (hashmap_isempty(nh->group)) |
682 | return link_has_route_one(link, route, nh, UINT8_MAX); | |
884a63d7 | 683 | |
228c3e21 YW |
684 | HASHMAP_FOREACH(nhg, nh->group) { |
685 | NextHop *h; | |
884a63d7 | 686 | |
228c3e21 YW |
687 | if (manager_get_nexthop_by_id(link->manager, nhg->id, &h) < 0) |
688 | return false; | |
689 | ||
690 | r = link_has_route_one(link, route, h, nhg->weight); | |
691 | if (r <= 0) | |
692 | return r; | |
693 | } | |
694 | ||
695 | return true; | |
884a63d7 YW |
696 | } |
697 | ||
698 | if (ordered_set_isempty(route->multipath_routes)) { | |
699 | if (route_type_is_reject(route)) | |
700 | return route_get(link->manager, NULL, route, NULL) >= 0; | |
701 | else | |
702 | return route_get(NULL, link, route, NULL) >= 0; | |
703 | } | |
704 | ||
705 | ORDERED_SET_FOREACH(m, route->multipath_routes) { | |
706 | _cleanup_(route_freep) Route *tmp = NULL; | |
707 | Link *l; | |
708 | ||
709 | if (m->ifname) { | |
f0ad7aed | 710 | if (link_get_by_name(link->manager, m->ifname, &l) < 0) |
884a63d7 | 711 | return false; |
884a63d7 | 712 | |
f0ad7aed | 713 | m->ifindex = l->ifindex; |
884a63d7 YW |
714 | } else |
715 | l = link; | |
716 | ||
717 | r = route_new(&tmp); | |
718 | if (r < 0) | |
719 | return r; | |
720 | ||
228c3e21 | 721 | route_copy(tmp, route, m, NULL, UINT8_MAX); |
884a63d7 YW |
722 | |
723 | if (route_get(NULL, l, tmp, NULL) < 0) | |
724 | return false; | |
725 | } | |
726 | ||
727 | return true; | |
728 | } | |
729 | ||
d94e8ba0 YW |
730 | static bool route_address_is_reachable(const Route *route, int family, const union in_addr_union *address) { |
731 | assert(route); | |
732 | assert(IN_SET(family, AF_INET, AF_INET6)); | |
733 | assert(address); | |
734 | ||
735 | if (route->family != family) | |
736 | return false; | |
737 | ||
738 | if (!in_addr_is_set(route->family, &route->dst)) | |
739 | return false; | |
740 | ||
741 | return in_addr_prefix_intersect( | |
742 | route->family, | |
743 | &route->dst, | |
744 | route->dst_prefixlen, | |
745 | address, | |
746 | FAMILY_ADDRESS_SIZE(family) * 8) > 0; | |
747 | } | |
748 | ||
749 | bool manager_address_is_reachable(Manager *manager, int family, const union in_addr_union *address) { | |
750 | Link *link; | |
751 | ||
752 | assert(manager); | |
753 | assert(IN_SET(family, AF_INET, AF_INET6)); | |
754 | assert(address); | |
755 | ||
6eab614d | 756 | HASHMAP_FOREACH(link, manager->links_by_index) { |
d94e8ba0 YW |
757 | Route *route; |
758 | ||
759 | SET_FOREACH(route, link->routes) | |
760 | if (route_address_is_reachable(route, family, address)) | |
761 | return true; | |
762 | SET_FOREACH(route, link->routes_foreign) | |
763 | if (route_address_is_reachable(route, family, address)) | |
764 | return true; | |
765 | } | |
766 | ||
767 | return false; | |
768 | } | |
769 | ||
fb3aec45 YW |
770 | static Route *routes_get_default_gateway(Set *routes, int family, Route *gw) { |
771 | Route *route; | |
772 | ||
773 | SET_FOREACH(route, routes) { | |
774 | if (family != AF_UNSPEC && route->family != family) | |
775 | continue; | |
776 | if (route->dst_prefixlen != 0) | |
777 | continue; | |
778 | if (route->src_prefixlen != 0) | |
779 | continue; | |
780 | if (route->table != RT_TABLE_MAIN) | |
781 | continue; | |
782 | if (route->type != RTN_UNICAST) | |
783 | continue; | |
784 | if (route->scope != RT_SCOPE_UNIVERSE) | |
785 | continue; | |
786 | if (!in_addr_is_set(route->gw_family, &route->gw)) | |
787 | continue; | |
788 | if (gw) { | |
789 | if (route->gw_weight > gw->gw_weight) | |
790 | continue; | |
791 | if (route->priority >= gw->priority) | |
792 | continue; | |
793 | } | |
794 | gw = route; | |
795 | } | |
796 | ||
797 | return gw; | |
798 | } | |
799 | ||
800 | int manager_find_uplink(Manager *m, int family, Link *exclude, Link **ret) { | |
801 | Route *gw = NULL; | |
802 | Link *link; | |
803 | ||
804 | assert(m); | |
805 | assert(IN_SET(family, AF_UNSPEC, AF_INET, AF_INET6)); | |
806 | ||
807 | /* Looks for a suitable "uplink", via black magic: an interface that is up and where the | |
808 | * default route with the highest priority points to. */ | |
809 | ||
6eab614d | 810 | HASHMAP_FOREACH(link, m->links_by_index) { |
fb3aec45 YW |
811 | if (link == exclude) |
812 | continue; | |
813 | ||
814 | if (link->state != LINK_STATE_CONFIGURED) | |
815 | continue; | |
816 | ||
817 | gw = routes_get_default_gateway(link->routes, family, gw); | |
818 | gw = routes_get_default_gateway(link->routes_foreign, family, gw); | |
819 | } | |
820 | ||
821 | if (!gw) | |
822 | return -ENOENT; | |
823 | ||
824 | assert(gw->link); | |
825 | *ret = gw->link; | |
826 | return 0; | |
827 | } | |
828 | ||
b19afdfe YW |
829 | static void log_route_debug(const Route *route, const char *str, const Link *link, const Manager *manager) { |
830 | _cleanup_free_ char *dst = NULL, *src = NULL, *gw_alloc = NULL, *prefsrc = NULL, | |
7653a9dc | 831 | *table = NULL, *scope = NULL, *proto = NULL; |
b19afdfe | 832 | const char *gw = NULL; |
7653a9dc | 833 | |
167a5561 YW |
834 | assert(route); |
835 | assert(str); | |
b19afdfe | 836 | assert(manager); |
167a5561 YW |
837 | |
838 | /* link may be NULL. */ | |
839 | ||
7653a9dc YW |
840 | if (!DEBUG_LOGGING) |
841 | return; | |
842 | ||
843 | if (in_addr_is_set(route->family, &route->dst)) | |
844 | (void) in_addr_prefix_to_string(route->family, &route->dst, route->dst_prefixlen, &dst); | |
845 | if (in_addr_is_set(route->family, &route->src)) | |
846 | (void) in_addr_to_string(route->family, &route->src, &src); | |
b19afdfe YW |
847 | if (in_addr_is_set(route->gw_family, &route->gw)) { |
848 | (void) in_addr_to_string(route->gw_family, &route->gw, &gw_alloc); | |
849 | gw = gw_alloc; | |
850 | } else if (route->gateway_from_dhcp_or_ra) { | |
851 | if (route->gw_family == AF_INET) | |
852 | gw = "_dhcp4"; | |
853 | else if (route->gw_family == AF_INET6) | |
854 | gw = "_ipv6ra"; | |
855 | } else { | |
856 | MultipathRoute *m; | |
857 | ||
858 | ORDERED_SET_FOREACH(m, route->multipath_routes) { | |
4304f68d | 859 | _cleanup_free_ char *buf = NULL; |
b19afdfe YW |
860 | union in_addr_union a = m->gateway.address; |
861 | ||
862 | (void) in_addr_to_string(m->gateway.family, &a, &buf); | |
4304f68d YW |
863 | (void) strextend_with_separator(&gw_alloc, ",", strna(buf)); |
864 | if (m->ifname) | |
865 | (void) strextend(&gw_alloc, "@", m->ifname); | |
866 | else if (m->ifindex > 0) | |
867 | (void) strextendf(&gw_alloc, "@%"PRIu32, m->ifindex); | |
868 | /* See comments in config_parse_multipath_route(). */ | |
869 | (void) strextendf(&gw_alloc, ":%"PRIu32, m->weight + 1); | |
b19afdfe YW |
870 | } |
871 | gw = gw_alloc; | |
872 | } | |
7653a9dc YW |
873 | if (in_addr_is_set(route->family, &route->prefsrc)) |
874 | (void) in_addr_to_string(route->family, &route->prefsrc, &prefsrc); | |
875 | (void) route_scope_to_string_alloc(route->scope, &scope); | |
b19afdfe | 876 | (void) manager_get_route_table_to_string(manager, route->table, &table); |
7653a9dc YW |
877 | (void) route_protocol_full_to_string_alloc(route->protocol, &proto); |
878 | ||
879 | log_link_debug(link, | |
880 | "%s route: dst: %s, src: %s, gw: %s, prefsrc: %s, scope: %s, table: %s, proto: %s, type: %s, nexthop: %"PRIu32", priority: %"PRIu32, | |
881 | str, strna(dst), strna(src), strna(gw), strna(prefsrc), | |
882 | strna(scope), strna(table), strna(proto), | |
883 | strna(route_type_to_string(route->type)), | |
884 | route->nexthop_id, route->priority); | |
167a5561 YW |
885 | } |
886 | ||
5f4d7aa4 YW |
887 | static int route_set_netlink_message(const Route *route, sd_netlink_message *req, Link *link) { |
888 | unsigned flags; | |
889 | int r; | |
890 | ||
891 | assert(route); | |
892 | assert(req); | |
893 | ||
894 | /* link may be NULL */ | |
895 | ||
3c7f1c07 | 896 | if (in_addr_is_set(route->gw_family, &route->gw) && route->nexthop_id == 0) { |
5f4d7aa4 YW |
897 | if (route->gw_family == route->family) { |
898 | r = netlink_message_append_in_addr_union(req, RTA_GATEWAY, route->gw_family, &route->gw); | |
899 | if (r < 0) | |
900 | return log_link_error_errno(link, r, "Could not append RTA_GATEWAY attribute: %m"); | |
901 | } else { | |
902 | RouteVia rtvia = { | |
903 | .family = route->gw_family, | |
904 | .address = route->gw, | |
905 | }; | |
906 | ||
907 | r = sd_netlink_message_append_data(req, RTA_VIA, &rtvia, sizeof(rtvia)); | |
908 | if (r < 0) | |
909 | return log_link_error_errno(link, r, "Could not append RTA_VIA attribute: %m"); | |
910 | } | |
911 | } | |
912 | ||
913 | if (route->dst_prefixlen > 0) { | |
914 | r = netlink_message_append_in_addr_union(req, RTA_DST, route->family, &route->dst); | |
915 | if (r < 0) | |
916 | return log_link_error_errno(link, r, "Could not append RTA_DST attribute: %m"); | |
917 | ||
918 | r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen); | |
919 | if (r < 0) | |
920 | return log_link_error_errno(link, r, "Could not set destination prefix length: %m"); | |
921 | } | |
922 | ||
923 | if (route->src_prefixlen > 0) { | |
924 | r = netlink_message_append_in_addr_union(req, RTA_SRC, route->family, &route->src); | |
925 | if (r < 0) | |
926 | return log_link_error_errno(link, r, "Could not append RTA_SRC attribute: %m"); | |
927 | ||
928 | r = sd_rtnl_message_route_set_src_prefixlen(req, route->src_prefixlen); | |
929 | if (r < 0) | |
930 | return log_link_error_errno(link, r, "Could not set source prefix length: %m"); | |
931 | } | |
932 | ||
94876904 | 933 | if (in_addr_is_set(route->family, &route->prefsrc)) { |
5f4d7aa4 YW |
934 | r = netlink_message_append_in_addr_union(req, RTA_PREFSRC, route->family, &route->prefsrc); |
935 | if (r < 0) | |
936 | return log_link_error_errno(link, r, "Could not append RTA_PREFSRC attribute: %m"); | |
937 | } | |
938 | ||
939 | r = sd_rtnl_message_route_set_scope(req, route->scope); | |
940 | if (r < 0) | |
941 | return log_link_error_errno(link, r, "Could not set scope: %m"); | |
942 | ||
943 | flags = route->flags; | |
944 | if (route->gateway_onlink >= 0) | |
945 | SET_FLAG(flags, RTNH_F_ONLINK, route->gateway_onlink); | |
946 | ||
947 | r = sd_rtnl_message_route_set_flags(req, flags); | |
948 | if (r < 0) | |
949 | return log_link_error_errno(link, r, "Could not set flags: %m"); | |
950 | ||
3e0eeb8e YW |
951 | if (route->table < 256) { |
952 | r = sd_rtnl_message_route_set_table(req, route->table); | |
953 | if (r < 0) | |
954 | return log_link_error_errno(link, r, "Could not set route table: %m"); | |
955 | } else { | |
956 | r = sd_rtnl_message_route_set_table(req, RT_TABLE_UNSPEC); | |
957 | if (r < 0) | |
958 | return log_link_error_errno(link, r, "Could not set route table: %m"); | |
5f4d7aa4 | 959 | |
3e0eeb8e YW |
960 | /* Table attribute to allow more than 256. */ |
961 | r = sd_netlink_message_append_data(req, RTA_TABLE, &route->table, sizeof(route->table)); | |
962 | if (r < 0) | |
963 | return log_link_error_errno(link, r, "Could not append RTA_TABLE attribute: %m"); | |
5f4d7aa4 YW |
964 | } |
965 | ||
08c2fcdc YW |
966 | if (!route_type_is_reject(route) && |
967 | route->nexthop_id == 0 && | |
968 | ordered_set_isempty(route->multipath_routes)) { | |
5f4d7aa4 YW |
969 | assert(link); /* Those routes must be attached to a specific link */ |
970 | ||
971 | r = sd_netlink_message_append_u32(req, RTA_OIF, link->ifindex); | |
972 | if (r < 0) | |
973 | return log_link_error_errno(link, r, "Could not append RTA_OIF attribute: %m"); | |
974 | } | |
975 | ||
324e3422 YW |
976 | if (route->nexthop_id > 0) { |
977 | r = sd_netlink_message_append_u32(req, RTA_NH_ID, route->nexthop_id); | |
978 | if (r < 0) | |
979 | return log_link_error_errno(link, r, "Could not append RTA_NH_ID attribute: %m"); | |
980 | } | |
981 | ||
5f4d7aa4 YW |
982 | r = sd_netlink_message_append_u8(req, RTA_PREF, route->pref); |
983 | if (r < 0) | |
984 | return log_link_error_errno(link, r, "Could not append RTA_PREF attribute: %m"); | |
985 | ||
986 | r = sd_netlink_message_append_u32(req, RTA_PRIORITY, route->priority); | |
987 | if (r < 0) | |
988 | return log_link_error_errno(link, r, "Could not append RTA_PRIORITY attribute: %m"); | |
989 | ||
990 | return 0; | |
991 | } | |
992 | ||
f4cc1364 | 993 | static int link_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4645ad47 YW |
994 | int r; |
995 | ||
996 | assert(m); | |
5a07fa9d | 997 | assert(link); |
76c5a0f2 | 998 | assert(link->route_remove_messages > 0); |
4645ad47 | 999 | |
76c5a0f2 YW |
1000 | link->route_remove_messages--; |
1001 | ||
5a07fa9d YW |
1002 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1003 | return 0; | |
1004 | ||
1005 | r = sd_netlink_message_get_errno(m); | |
1006 | if (r < 0 && r != -ESRCH) | |
f4cc1364 | 1007 | log_link_message_warning_errno(link, m, r, "Could not drop route, ignoring"); |
5a07fa9d YW |
1008 | |
1009 | return 1; | |
1010 | } | |
1011 | ||
5a07fa9d YW |
1012 | static int manager_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, Manager *manager) { |
1013 | int r; | |
1014 | ||
1015 | assert(m); | |
76c5a0f2 YW |
1016 | assert(manager); |
1017 | assert(manager->route_remove_messages > 0); | |
1018 | ||
1019 | manager->route_remove_messages--; | |
4645ad47 YW |
1020 | |
1021 | r = sd_netlink_message_get_errno(m); | |
1022 | if (r < 0 && r != -ESRCH) | |
5a07fa9d | 1023 | log_message_warning_errno(m, r, "Could not drop route, ignoring"); |
4645ad47 YW |
1024 | |
1025 | return 1; | |
1026 | } | |
1027 | ||
f4cc1364 | 1028 | int route_remove(const Route *route, Manager *manager, Link *link) { |
4afd3348 | 1029 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
c3fa1257 | 1030 | unsigned char type; |
5c1d3fc9 UTL |
1031 | int r; |
1032 | ||
ad208fac | 1033 | assert(link || manager); |
4c701096 | 1034 | assert(IN_SET(route->family, AF_INET, AF_INET6)); |
5c1d3fc9 | 1035 | |
ad208fac YW |
1036 | if (!manager) |
1037 | manager = link->manager; | |
1038 | ||
552b90a2 | 1039 | log_route_debug(route, "Removing", link, manager); |
167a5561 | 1040 | |
ad208fac | 1041 | r = sd_rtnl_message_new_route(manager->rtnl, &req, |
28cc555d DW |
1042 | RTM_DELROUTE, route->family, |
1043 | route->protocol); | |
f647962d | 1044 | if (r < 0) |
7750b796 | 1045 | return log_link_error_errno(link, r, "Could not create RTM_DELROUTE message: %m"); |
5c1d3fc9 | 1046 | |
c3fa1257 YW |
1047 | if (route->family == AF_INET && route->nexthop_id > 0 && route->type == RTN_BLACKHOLE) |
1048 | /* When IPv4 route has nexthop id and the nexthop type is blackhole, even though kernel | |
1049 | * sends RTM_NEWROUTE netlink message with blackhole type, kernel's internal route type | |
1050 | * fib_rt_info::type may not be blackhole. Thus, we cannot know the internal value. | |
1051 | * Moreover, on route removal, the matching is done with the hidden value if we set | |
1052 | * non-zero type in RTM_DELROUTE message. Note, sd_rtnl_message_new_route() sets | |
1053 | * RTN_UNICAST by default. So, we need to clear the type here. */ | |
1054 | type = RTN_UNSPEC; | |
1055 | else | |
1056 | type = route->type; | |
1057 | ||
1058 | r = sd_rtnl_message_route_set_type(req, type); | |
1059 | if (r < 0) | |
1060 | return log_link_error_errno(link, r, "Could not set route type: %m"); | |
1061 | ||
5f4d7aa4 | 1062 | r = route_set_netlink_message(route, req, link); |
f647962d | 1063 | if (r < 0) |
5f4d7aa4 | 1064 | return r; |
5c1d3fc9 | 1065 | |
5a07fa9d YW |
1066 | if (link) { |
1067 | r = netlink_call_async(manager->rtnl, NULL, req, | |
f4cc1364 | 1068 | link_route_remove_handler, |
5a07fa9d YW |
1069 | link_netlink_destroy_callback, link); |
1070 | if (r < 0) | |
1071 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
5c1d3fc9 | 1072 | |
5a07fa9d | 1073 | link_ref(link); |
76c5a0f2 | 1074 | link->route_remove_messages++; |
5a07fa9d YW |
1075 | } else { |
1076 | r = netlink_call_async(manager->rtnl, NULL, req, | |
1077 | manager_route_remove_handler, | |
1078 | NULL, manager); | |
1079 | if (r < 0) | |
1080 | return log_error_errno(r, "Could not send rtnetlink message: %m"); | |
76c5a0f2 YW |
1081 | |
1082 | manager->route_remove_messages++; | |
5a07fa9d | 1083 | } |
563c69c6 | 1084 | |
5c1d3fc9 UTL |
1085 | return 0; |
1086 | } | |
1087 | ||
884a63d7 | 1088 | static bool link_has_static_route(const Link *link, const Route *route) { |
779804dd YW |
1089 | Route *net_route; |
1090 | ||
1091 | assert(link); | |
1092 | assert(route); | |
1093 | ||
1094 | if (!link->network) | |
1095 | return false; | |
1096 | ||
2a54a044 | 1097 | HASHMAP_FOREACH(net_route, link->network->routes_by_section) |
779804dd YW |
1098 | if (route_equal(net_route, route)) |
1099 | return true; | |
1100 | ||
1101 | return false; | |
1102 | } | |
1103 | ||
884a63d7 | 1104 | static bool links_have_static_route(const Manager *manager, const Route *route, const Link *except) { |
1132a714 YW |
1105 | Link *link; |
1106 | ||
1107 | assert(manager); | |
1108 | ||
6eab614d | 1109 | HASHMAP_FOREACH(link, manager->links_by_index) { |
1132a714 YW |
1110 | if (link == except) |
1111 | continue; | |
1112 | ||
884a63d7 | 1113 | if (link_has_static_route(link, route)) |
1132a714 YW |
1114 | return true; |
1115 | } | |
1116 | ||
1117 | return false; | |
1118 | } | |
1119 | ||
4055ec93 | 1120 | static int manager_drop_routes_internal(Manager *manager, bool foreign, const Link *except) { |
1132a714 YW |
1121 | Route *route; |
1122 | int k, r = 0; | |
4055ec93 | 1123 | Set *routes; |
1132a714 YW |
1124 | |
1125 | assert(manager); | |
1126 | ||
4055ec93 YW |
1127 | routes = foreign ? manager->routes_foreign : manager->routes; |
1128 | SET_FOREACH(route, routes) { | |
8a9ce525 YW |
1129 | if (route->removing) |
1130 | continue; | |
1131 | ||
0f1f933b | 1132 | /* Do not touch routes managed by the kernel. */ |
1132a714 YW |
1133 | if (route->protocol == RTPROT_KERNEL) |
1134 | continue; | |
1135 | ||
0f1f933b | 1136 | /* The route will be configured later, or already configured by a link. */ |
884a63d7 | 1137 | if (links_have_static_route(manager, route, except)) |
1132a714 YW |
1138 | continue; |
1139 | ||
0f1f933b | 1140 | /* The existing links do not have the route. Let's drop this now. It may be |
1132a714 | 1141 | * re-configured later. */ |
f4cc1364 | 1142 | k = route_remove(route, manager, NULL); |
1132a714 YW |
1143 | if (k < 0 && r >= 0) |
1144 | r = k; | |
8a9ce525 YW |
1145 | |
1146 | route->removing = true; | |
1132a714 YW |
1147 | } |
1148 | ||
1149 | return r; | |
1150 | } | |
1151 | ||
4055ec93 YW |
1152 | static int manager_drop_foreign_routes(Manager *manager) { |
1153 | return manager_drop_routes_internal(manager, true, NULL); | |
1154 | } | |
1132a714 | 1155 | |
4055ec93 YW |
1156 | static int manager_drop_routes(Manager *manager, const Link *except) { |
1157 | return manager_drop_routes_internal(manager, false, except); | |
1132a714 YW |
1158 | } |
1159 | ||
779804dd YW |
1160 | int link_drop_foreign_routes(Link *link) { |
1161 | Route *route; | |
1162 | int k, r = 0; | |
1163 | ||
1164 | assert(link); | |
1132a714 | 1165 | assert(link->manager); |
779804dd YW |
1166 | |
1167 | SET_FOREACH(route, link->routes_foreign) { | |
1168 | /* do not touch routes managed by the kernel */ | |
1169 | if (route->protocol == RTPROT_KERNEL) | |
1170 | continue; | |
1171 | ||
1172 | /* do not touch multicast route added by kernel */ | |
1173 | /* FIXME: Why the kernel adds this route with protocol RTPROT_BOOT??? We need to investigate that. | |
1174 | * https://tools.ietf.org/html/rfc4862#section-5.4 may explain why. */ | |
1175 | if (route->protocol == RTPROT_BOOT && | |
1176 | route->family == AF_INET6 && | |
1177 | route->dst_prefixlen == 8 && | |
1178 | in_addr_equal(AF_INET6, &route->dst, &(union in_addr_union) { .in6 = {{{ 0xff,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0 }}} })) | |
1179 | continue; | |
1180 | ||
1181 | if (route->protocol == RTPROT_STATIC && link->network && | |
1182 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_STATIC)) | |
1183 | continue; | |
1184 | ||
1185 | if (route->protocol == RTPROT_DHCP && link->network && | |
1186 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP)) | |
1187 | continue; | |
1188 | ||
884a63d7 | 1189 | if (link_has_static_route(link, route)) |
228c3e21 | 1190 | k = route_add(NULL, link, route, NULL, NULL, UINT8_MAX, NULL); |
779804dd | 1191 | else |
f4cc1364 | 1192 | k = route_remove(route, NULL, link); |
779804dd YW |
1193 | if (k < 0 && r >= 0) |
1194 | r = k; | |
1195 | } | |
1196 | ||
1132a714 YW |
1197 | k = manager_drop_foreign_routes(link->manager); |
1198 | if (k < 0 && r >= 0) | |
1199 | r = k; | |
1200 | ||
779804dd YW |
1201 | return r; |
1202 | } | |
1203 | ||
62f0ea5f YW |
1204 | int link_drop_routes(Link *link) { |
1205 | Route *route; | |
1206 | int k, r = 0; | |
1207 | ||
1208 | assert(link); | |
1209 | ||
1210 | SET_FOREACH(route, link->routes) { | |
1211 | /* do not touch routes managed by the kernel */ | |
1212 | if (route->protocol == RTPROT_KERNEL) | |
1213 | continue; | |
1214 | ||
f4cc1364 | 1215 | k = route_remove(route, NULL, link); |
62f0ea5f YW |
1216 | if (k < 0 && r >= 0) |
1217 | r = k; | |
1218 | } | |
1219 | ||
1132a714 YW |
1220 | k = manager_drop_routes(link->manager, link); |
1221 | if (k < 0 && r >= 0) | |
1222 | r = k; | |
1223 | ||
62f0ea5f YW |
1224 | return r; |
1225 | } | |
1226 | ||
74154c2e | 1227 | static int route_expire_handler(sd_event_source *s, uint64_t usec, void *userdata) { |
f833694d TG |
1228 | Route *route = userdata; |
1229 | int r; | |
1230 | ||
1231 | assert(route); | |
1232 | ||
f4cc1364 | 1233 | r = route_remove(route, route->manager, route->link); |
d6ad41e2 | 1234 | if (r < 0) { |
98b02994 | 1235 | log_link_warning_errno(route->link, r, "Could not remove route: %m"); |
fe7ca21a | 1236 | route_free(route); |
d6ad41e2 | 1237 | } |
f833694d TG |
1238 | |
1239 | return 1; | |
1240 | } | |
1241 | ||
228c3e21 | 1242 | static int route_add_and_setup_timer_one(Link *link, const Route *route, const MultipathRoute *m, const NextHop *nh, uint8_t nh_weight, Route **ret) { |
f9bb3338 YW |
1243 | _cleanup_(sd_event_source_unrefp) sd_event_source *expire = NULL; |
1244 | Route *nr; | |
7b3a7581 | 1245 | int r; |
f9bb3338 YW |
1246 | |
1247 | assert(link); | |
324e3422 | 1248 | assert(link->manager); |
f9bb3338 | 1249 | assert(route); |
228c3e21 YW |
1250 | assert(!(m && nh)); |
1251 | assert(ret); | |
324e3422 | 1252 | |
30f10837 | 1253 | if (route_type_is_reject(route) || (nh && nh->blackhole)) |
228c3e21 YW |
1254 | r = route_add(link->manager, NULL, route, NULL, nh, nh_weight, &nr); |
1255 | else if (nh) { | |
1256 | assert(nh->link); | |
1257 | assert(hashmap_isempty(nh->group)); | |
1258 | ||
1259 | r = route_add(NULL, nh->link, route, NULL, nh, nh_weight, &nr); | |
1260 | } else if (m && m->ifindex != 0 && m->ifindex != link->ifindex) { | |
f9bb3338 YW |
1261 | Link *link_gw; |
1262 | ||
6eab614d | 1263 | r = link_get_by_index(link->manager, m->ifindex, &link_gw); |
f9bb3338 YW |
1264 | if (r < 0) |
1265 | return log_link_error_errno(link, r, "Failed to get link with ifindex %d: %m", m->ifindex); | |
1266 | ||
228c3e21 YW |
1267 | r = route_add(NULL, link_gw, route, m, NULL, UINT8_MAX, &nr); |
1268 | } else | |
1269 | r = route_add(NULL, link, route, m, NULL, UINT8_MAX, &nr); | |
7b3a7581 YW |
1270 | if (r < 0) |
1271 | return log_link_error_errno(link, r, "Could not add route: %m"); | |
f9bb3338 YW |
1272 | |
1273 | /* TODO: drop expiration handling once it can be pushed into the kernel */ | |
1274 | if (nr->lifetime != USEC_INFINITY && !kernel_route_expiration_supported()) { | |
1275 | r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), | |
1276 | nr->lifetime, 0, route_expire_handler, nr); | |
1277 | if (r < 0) | |
1278 | return log_link_error_errno(link, r, "Could not arm expiration timer: %m"); | |
1279 | } | |
1280 | ||
1281 | sd_event_source_unref(nr->expire); | |
1282 | nr->expire = TAKE_PTR(expire); | |
1283 | ||
228c3e21 YW |
1284 | *ret = nr; |
1285 | return 0; | |
1286 | } | |
1287 | ||
1288 | static int route_add_and_setup_timer(Link *link, const Route *route, unsigned *ret_n_routes, Route ***ret_routes) { | |
1289 | _cleanup_free_ Route **routes = NULL; | |
1290 | unsigned n_routes; | |
1291 | NextHop *nh; | |
1292 | Route **p; | |
1293 | int r; | |
1294 | ||
1295 | assert(link); | |
1296 | assert(route); | |
1297 | assert(ret_n_routes); | |
1298 | assert(ret_routes); | |
1299 | ||
1300 | if (route->nexthop_id > 0) { | |
1301 | r = manager_get_nexthop_by_id(link->manager, route->nexthop_id, &nh); | |
1302 | if (r < 0) | |
1303 | return log_link_error_errno(link, r, "Could not get nexthop by ID %"PRIu32": %m", route->nexthop_id); | |
1304 | } else | |
1305 | nh = NULL; | |
1306 | ||
1307 | if (nh && !hashmap_isempty(nh->group)) { | |
1308 | struct nexthop_grp *nhg; | |
1309 | ||
1310 | n_routes = hashmap_size(nh->group); | |
1311 | p = routes = new(Route*, n_routes); | |
1312 | if (!routes) | |
1313 | return log_oom(); | |
f9bb3338 | 1314 | |
228c3e21 YW |
1315 | HASHMAP_FOREACH(nhg, nh->group) { |
1316 | NextHop *h; | |
1317 | ||
1318 | r = manager_get_nexthop_by_id(link->manager, nhg->id, &h); | |
1319 | if (r < 0) | |
1320 | return log_link_error_errno(link, r, "Could not get nexthop group member by ID %"PRIu32": %m", nhg->id); | |
1321 | ||
1322 | /* The nexthop h may be a blackhole nexthop. In that case, h->link is NULL. */ | |
1323 | r = route_add_and_setup_timer_one(h->link ?: link, route, NULL, h, nhg->weight, p++); | |
1324 | if (r < 0) | |
1325 | return r; | |
1326 | } | |
1327 | } else if (!ordered_set_isempty(route->multipath_routes)) { | |
1328 | MultipathRoute *m; | |
1329 | ||
1330 | assert(!nh); | |
1331 | assert(!in_addr_is_set(route->gw_family, &route->gw)); | |
1332 | ||
1333 | n_routes = ordered_set_size(route->multipath_routes); | |
1334 | p = routes = new(Route*, n_routes); | |
1335 | if (!routes) | |
1336 | return log_oom(); | |
1337 | ||
1338 | ORDERED_SET_FOREACH(m, route->multipath_routes) { | |
1339 | r = route_add_and_setup_timer_one(link, route, m, NULL, UINT8_MAX, p++); | |
1340 | if (r < 0) | |
1341 | return r; | |
1342 | } | |
1343 | } else { | |
1344 | n_routes = 1; | |
1345 | routes = new(Route*, n_routes); | |
1346 | if (!routes) | |
1347 | return log_oom(); | |
1348 | ||
1349 | r = route_add_and_setup_timer_one(link, route, NULL, nh, UINT8_MAX, routes); | |
1350 | if (r < 0) | |
1351 | return r; | |
1352 | } | |
1353 | ||
1354 | *ret_n_routes = n_routes; | |
1355 | *ret_routes = TAKE_PTR(routes); | |
7b3a7581 | 1356 | return 0; |
f9bb3338 YW |
1357 | } |
1358 | ||
08c2fcdc | 1359 | static int append_nexthop_one(const Link *link, const Route *route, const MultipathRoute *m, struct rtattr **rta, size_t offset) { |
6ff5cc6b YW |
1360 | struct rtnexthop *rtnh; |
1361 | struct rtattr *new_rta; | |
1362 | int r; | |
1363 | ||
1364 | assert(route); | |
1365 | assert(m); | |
1366 | assert(rta); | |
1367 | assert(*rta); | |
1368 | ||
1369 | new_rta = realloc(*rta, RTA_ALIGN((*rta)->rta_len) + RTA_SPACE(sizeof(struct rtnexthop))); | |
1370 | if (!new_rta) | |
1371 | return -ENOMEM; | |
1372 | *rta = new_rta; | |
1373 | ||
1374 | rtnh = (struct rtnexthop *)((uint8_t *) *rta + offset); | |
1375 | *rtnh = (struct rtnexthop) { | |
1376 | .rtnh_len = sizeof(*rtnh), | |
08c2fcdc | 1377 | .rtnh_ifindex = m->ifindex > 0 ? m->ifindex : link->ifindex, |
234106db | 1378 | .rtnh_hops = m->weight, |
6ff5cc6b YW |
1379 | }; |
1380 | ||
1381 | (*rta)->rta_len += sizeof(struct rtnexthop); | |
1382 | ||
1383 | if (route->family == m->gateway.family) { | |
1384 | r = rtattr_append_attribute(rta, RTA_GATEWAY, &m->gateway.address, FAMILY_ADDRESS_SIZE(m->gateway.family)); | |
1385 | if (r < 0) | |
1386 | goto clear; | |
1387 | rtnh = (struct rtnexthop *)((uint8_t *) *rta + offset); | |
1388 | rtnh->rtnh_len += RTA_SPACE(FAMILY_ADDRESS_SIZE(m->gateway.family)); | |
1389 | } else { | |
1390 | r = rtattr_append_attribute(rta, RTA_VIA, &m->gateway, FAMILY_ADDRESS_SIZE(m->gateway.family) + sizeof(m->gateway.family)); | |
1391 | if (r < 0) | |
1392 | goto clear; | |
1393 | rtnh = (struct rtnexthop *)((uint8_t *) *rta + offset); | |
1394 | rtnh->rtnh_len += RTA_SPACE(FAMILY_ADDRESS_SIZE(m->gateway.family) + sizeof(m->gateway.family)); | |
1395 | } | |
1396 | ||
1397 | return 0; | |
1398 | ||
1399 | clear: | |
1400 | (*rta)->rta_len -= sizeof(struct rtnexthop); | |
1401 | return r; | |
1402 | } | |
1403 | ||
08c2fcdc | 1404 | static int append_nexthops(const Link *link, const Route *route, sd_netlink_message *req) { |
6ff5cc6b YW |
1405 | _cleanup_free_ struct rtattr *rta = NULL; |
1406 | struct rtnexthop *rtnh; | |
1407 | MultipathRoute *m; | |
1408 | size_t offset; | |
6ff5cc6b YW |
1409 | int r; |
1410 | ||
08c2fcdc YW |
1411 | assert(link); |
1412 | assert(route); | |
1413 | assert(req); | |
1414 | ||
6ff5cc6b YW |
1415 | if (ordered_set_isempty(route->multipath_routes)) |
1416 | return 0; | |
1417 | ||
1418 | rta = new(struct rtattr, 1); | |
1419 | if (!rta) | |
1420 | return -ENOMEM; | |
1421 | ||
1422 | *rta = (struct rtattr) { | |
1423 | .rta_type = RTA_MULTIPATH, | |
1424 | .rta_len = RTA_LENGTH(0), | |
1425 | }; | |
1426 | offset = (uint8_t *) RTA_DATA(rta) - (uint8_t *) rta; | |
1427 | ||
90e74a66 | 1428 | ORDERED_SET_FOREACH(m, route->multipath_routes) { |
08c2fcdc | 1429 | r = append_nexthop_one(link, route, m, &rta, offset); |
6ff5cc6b YW |
1430 | if (r < 0) |
1431 | return r; | |
1432 | ||
1433 | rtnh = (struct rtnexthop *)((uint8_t *) rta + offset); | |
1434 | offset = (uint8_t *) RTNH_NEXT(rtnh) - (uint8_t *) rta; | |
1435 | } | |
1436 | ||
1437 | r = sd_netlink_message_append_data(req, RTA_MULTIPATH, RTA_DATA(rta), RTA_PAYLOAD(rta)); | |
1438 | if (r < 0) | |
1439 | return r; | |
1440 | ||
1441 | return 0; | |
1442 | } | |
1443 | ||
5a07fa9d YW |
1444 | int route_configure_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, const char *error_msg) { |
1445 | int r; | |
1446 | ||
1447 | assert(m); | |
1448 | assert(link); | |
1449 | assert(error_msg); | |
1450 | ||
1451 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1452 | return 0; | |
1453 | ||
1454 | r = sd_netlink_message_get_errno(m); | |
1455 | if (r < 0 && r != -EEXIST) { | |
e95c06c9 | 1456 | log_link_message_warning_errno(link, m, r, "Could not set route"); |
5a07fa9d YW |
1457 | link_enter_failed(link); |
1458 | return 0; | |
1459 | } | |
1460 | ||
1461 | return 1; | |
1462 | } | |
1463 | ||
76c5a0f2 | 1464 | static int route_configure( |
423c249c | 1465 | const Route *route, |
1b566071 | 1466 | Link *link, |
80b0e860 | 1467 | link_netlink_message_handler_t callback, |
5cb76467 YW |
1468 | unsigned *ret_n_routes, |
1469 | Route ***ret_routes) { | |
1b566071 | 1470 | |
4afd3348 | 1471 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
5cb76467 YW |
1472 | _cleanup_free_ Route **routes = NULL; |
1473 | unsigned n_routes = 0; /* avoid false maybe-uninitialized warning */ | |
7b3a7581 | 1474 | int r; |
f579559b | 1475 | |
f579559b | 1476 | assert(link); |
f882c247 TG |
1477 | assert(link->manager); |
1478 | assert(link->manager->rtnl); | |
f579559b | 1479 | assert(link->ifindex > 0); |
4c701096 | 1480 | assert(IN_SET(route->family, AF_INET, AF_INET6)); |
bd1175bc | 1481 | assert(callback); |
5cb76467 | 1482 | assert(!!ret_n_routes == !!ret_routes); |
f579559b | 1483 | |
ad208fac | 1484 | if (route_get(link->manager, link, route, NULL) <= 0 && |
47d2d30d | 1485 | set_size(link->routes) >= routes_max()) |
7750b796 YW |
1486 | return log_link_error_errno(link, SYNTHETIC_ERRNO(E2BIG), |
1487 | "Too many routes are configured, refusing: %m"); | |
1b566071 | 1488 | |
552b90a2 | 1489 | log_route_debug(route, "Configuring", link, link->manager); |
156ed65e | 1490 | |
151b9b96 | 1491 | r = sd_rtnl_message_new_route(link->manager->rtnl, &req, |
28cc555d DW |
1492 | RTM_NEWROUTE, route->family, |
1493 | route->protocol); | |
f647962d | 1494 | if (r < 0) |
7750b796 | 1495 | return log_link_error_errno(link, r, "Could not create RTM_NEWROUTE message: %m"); |
f579559b | 1496 | |
c3fa1257 YW |
1497 | r = sd_rtnl_message_route_set_type(req, route->type); |
1498 | if (r < 0) | |
1499 | return log_link_error_errno(link, r, "Could not set route type: %m"); | |
1500 | ||
5f4d7aa4 | 1501 | r = route_set_netlink_message(route, req, link); |
f647962d | 1502 | if (r < 0) |
5f4d7aa4 | 1503 | return r; |
3b015d40 | 1504 | |
f02ba163 DD |
1505 | if (route->lifetime != USEC_INFINITY && kernel_route_expiration_supported()) { |
1506 | r = sd_netlink_message_append_u32(req, RTA_EXPIRES, | |
1507 | DIV_ROUND_UP(usec_sub_unsigned(route->lifetime, now(clock_boottime_or_monotonic())), USEC_PER_SEC)); | |
1508 | if (r < 0) | |
7750b796 | 1509 | return log_link_error_errno(link, r, "Could not append RTA_EXPIRES attribute: %m"); |
f02ba163 DD |
1510 | } |
1511 | ||
9b88f20a SS |
1512 | if (route->ttl_propagate >= 0) { |
1513 | r = sd_netlink_message_append_u8(req, RTA_TTL_PROPAGATE, route->ttl_propagate); | |
1514 | if (r < 0) | |
1515 | return log_link_error_errno(link, r, "Could not append RTA_TTL_PROPAGATE attribute: %m"); | |
1516 | } | |
1517 | ||
d6fceaf1 SS |
1518 | r = sd_netlink_message_open_container(req, RTA_METRICS); |
1519 | if (r < 0) | |
7750b796 | 1520 | return log_link_error_errno(link, r, "Could not append RTA_METRICS attribute: %m"); |
d6fceaf1 SS |
1521 | |
1522 | if (route->mtu > 0) { | |
1523 | r = sd_netlink_message_append_u32(req, RTAX_MTU, route->mtu); | |
1524 | if (r < 0) | |
7750b796 | 1525 | return log_link_error_errno(link, r, "Could not append RTAX_MTU attribute: %m"); |
d6fceaf1 SS |
1526 | } |
1527 | ||
6b21ad33 | 1528 | if (route->initcwnd > 0) { |
323d9329 SS |
1529 | r = sd_netlink_message_append_u32(req, RTAX_INITCWND, route->initcwnd); |
1530 | if (r < 0) | |
7750b796 | 1531 | return log_link_error_errno(link, r, "Could not append RTAX_INITCWND attribute: %m"); |
323d9329 SS |
1532 | } |
1533 | ||
6b21ad33 | 1534 | if (route->initrwnd > 0) { |
323d9329 SS |
1535 | r = sd_netlink_message_append_u32(req, RTAX_INITRWND, route->initrwnd); |
1536 | if (r < 0) | |
7750b796 | 1537 | return log_link_error_errno(link, r, "Could not append RTAX_INITRWND attribute: %m"); |
323d9329 SS |
1538 | } |
1539 | ||
67c193bf | 1540 | if (route->quickack >= 0) { |
09f5dfad SS |
1541 | r = sd_netlink_message_append_u32(req, RTAX_QUICKACK, route->quickack); |
1542 | if (r < 0) | |
7750b796 | 1543 | return log_link_error_errno(link, r, "Could not append RTAX_QUICKACK attribute: %m"); |
09f5dfad SS |
1544 | } |
1545 | ||
633c7258 SS |
1546 | if (route->fast_open_no_cookie >= 0) { |
1547 | r = sd_netlink_message_append_u32(req, RTAX_FASTOPEN_NO_COOKIE, route->fast_open_no_cookie); | |
1548 | if (r < 0) | |
1549 | return log_link_error_errno(link, r, "Could not append RTAX_FASTOPEN_NO_COOKIE attribute: %m"); | |
1550 | } | |
1551 | ||
007cac09 SS |
1552 | if (route->advmss > 0) { |
1553 | r = sd_netlink_message_append_u32(req, RTAX_ADVMSS, route->advmss); | |
1554 | if (r < 0) | |
1555 | return log_link_error_errno(link, r, "Could not append RTAX_ADVMSS attribute: %m"); | |
1556 | } | |
1557 | ||
d6fceaf1 SS |
1558 | r = sd_netlink_message_close_container(req); |
1559 | if (r < 0) | |
7750b796 | 1560 | return log_link_error_errno(link, r, "Could not append RTA_METRICS attribute: %m"); |
d6fceaf1 | 1561 | |
228c3e21 YW |
1562 | if (!ordered_set_isempty(route->multipath_routes)) { |
1563 | assert(route->nexthop_id == 0); | |
1564 | assert(!in_addr_is_set(route->gw_family, &route->gw)); | |
f833694d | 1565 | |
08c2fcdc | 1566 | r = append_nexthops(link, route, req); |
3c7f1c07 YW |
1567 | if (r < 0) |
1568 | return log_link_error_errno(link, r, "Could not append RTA_MULTIPATH attribute: %m"); | |
f9bb3338 | 1569 | } |
80b0e860 | 1570 | |
228c3e21 YW |
1571 | r = route_add_and_setup_timer(link, route, &n_routes, &routes); |
1572 | if (r < 0) | |
1573 | return r; | |
1574 | ||
0c54bfd6 YW |
1575 | r = netlink_call_async(link->manager->rtnl, NULL, req, callback, |
1576 | link_netlink_destroy_callback, link); | |
1577 | if (r < 0) | |
1578 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1579 | ||
1580 | link_ref(link); | |
1581 | ||
5cb76467 YW |
1582 | if (ret_routes) { |
1583 | *ret_n_routes = n_routes; | |
1584 | *ret_routes = TAKE_PTR(routes); | |
1585 | } | |
0ef9f3c7 | 1586 | |
228c3e21 | 1587 | return r; |
f579559b TG |
1588 | } |
1589 | ||
76c5a0f2 | 1590 | static int static_route_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
141318f7 YW |
1591 | int r; |
1592 | ||
1593 | assert(link); | |
76c5a0f2 | 1594 | assert(link->static_route_messages > 0); |
141318f7 | 1595 | |
76c5a0f2 | 1596 | link->static_route_messages--; |
141318f7 | 1597 | |
76c5a0f2 | 1598 | r = route_configure_handler_internal(rtnl, m, link, "Could not set route"); |
5a07fa9d YW |
1599 | if (r <= 0) |
1600 | return r; | |
141318f7 | 1601 | |
76c5a0f2 YW |
1602 | if (link->static_route_messages == 0) { |
1603 | log_link_debug(link, "Routes set"); | |
141318f7 | 1604 | link->static_routes_configured = true; |
f345918d | 1605 | link_check_ready(link); |
141318f7 YW |
1606 | } |
1607 | ||
1608 | return 1; | |
1609 | } | |
1610 | ||
76c5a0f2 YW |
1611 | int link_request_route( |
1612 | Link *link, | |
1613 | Route *route, | |
1614 | bool consume_object, | |
1615 | unsigned *message_counter, | |
1616 | link_netlink_message_handler_t netlink_handler, | |
1617 | Request **ret) { | |
f345918d YW |
1618 | |
1619 | assert(link); | |
76c5a0f2 | 1620 | assert(link->manager); |
f345918d YW |
1621 | assert(route); |
1622 | ||
76c5a0f2 YW |
1623 | log_route_debug(route, "Requesting", link, link->manager); |
1624 | return link_queue_request(link, REQUEST_TYPE_ROUTE, route, consume_object, | |
1625 | message_counter, netlink_handler, ret); | |
f345918d YW |
1626 | } |
1627 | ||
76c5a0f2 | 1628 | int link_request_static_routes(Link *link, bool only_ipv4) { |
e8f52f3c | 1629 | Route *route; |
141318f7 YW |
1630 | int r; |
1631 | ||
f345918d YW |
1632 | assert(link); |
1633 | assert(link->network); | |
1634 | ||
76c5a0f2 | 1635 | link->static_routes_configured = false; |
e8f52f3c | 1636 | |
76c5a0f2 | 1637 | HASHMAP_FOREACH(route, link->network->routes_by_section) { |
e8f52f3c YW |
1638 | if (route->gateway_from_dhcp_or_ra) |
1639 | continue; | |
1640 | ||
76c5a0f2 | 1641 | if (only_ipv4 && route->family != AF_INET) |
f345918d YW |
1642 | continue; |
1643 | ||
76c5a0f2 YW |
1644 | r = link_request_route(link, route, false, &link->static_route_messages, |
1645 | static_route_handler, NULL); | |
f345918d | 1646 | if (r < 0) |
76c5a0f2 YW |
1647 | return r; |
1648 | } | |
f345918d | 1649 | |
76c5a0f2 YW |
1650 | if (link->static_route_messages == 0) { |
1651 | link->static_routes_configured = true; | |
1652 | link_check_ready(link); | |
1653 | } else { | |
1654 | log_link_debug(link, "Requesting routes"); | |
1655 | link_set_state(link, LINK_STATE_CONFIGURING); | |
f345918d YW |
1656 | } |
1657 | ||
1658 | return 0; | |
1659 | } | |
1660 | ||
76c5a0f2 YW |
1661 | static int route_is_ready_to_configure(const Route *route, Link *link) { |
1662 | MultipathRoute *m; | |
1663 | NextHop *nh = NULL; | |
f345918d YW |
1664 | int r; |
1665 | ||
76c5a0f2 | 1666 | assert(route); |
f345918d | 1667 | assert(link); |
f345918d | 1668 | |
228c3e21 YW |
1669 | if (route->nexthop_id > 0) { |
1670 | struct nexthop_grp *nhg; | |
1671 | ||
1672 | if (manager_get_nexthop_by_id(link->manager, route->nexthop_id, &nh) < 0) | |
1673 | return false; | |
1674 | ||
1675 | HASHMAP_FOREACH(nhg, nh->group) | |
1676 | if (manager_get_nexthop_by_id(link->manager, nhg->id, NULL) < 0) | |
1677 | return false; | |
1678 | } | |
f345918d | 1679 | |
76c5a0f2 YW |
1680 | if (route_type_is_reject(route) || (nh && nh->blackhole)) { |
1681 | if (nh && link->manager->nexthop_remove_messages > 0) | |
1682 | return false; | |
1683 | if (link->manager->route_remove_messages > 0) | |
1684 | return false; | |
f345918d | 1685 | } else { |
76c5a0f2 YW |
1686 | Link *l; |
1687 | ||
6eab614d | 1688 | HASHMAP_FOREACH(l, link->manager->links_by_index) { |
76c5a0f2 YW |
1689 | if (l->address_remove_messages > 0) |
1690 | return false; | |
1691 | if (l->nexthop_remove_messages > 0) | |
1692 | return false; | |
1693 | if (l->route_remove_messages > 0) | |
1694 | return false; | |
1695 | } | |
f345918d YW |
1696 | } |
1697 | ||
76c5a0f2 YW |
1698 | if (in_addr_is_set(route->family, &route->prefsrc) > 0) { |
1699 | r = manager_has_address(link->manager, route->family, &route->prefsrc, route->family == AF_INET6); | |
1700 | if (r <= 0) | |
1701 | return r; | |
1702 | } | |
f345918d | 1703 | |
76c5a0f2 YW |
1704 | if (route->gateway_onlink <= 0 && |
1705 | in_addr_is_set(route->gw_family, &route->gw) > 0 && | |
1706 | !manager_address_is_reachable(link->manager, route->gw_family, &route->gw)) | |
1707 | return false; | |
f345918d | 1708 | |
76c5a0f2 YW |
1709 | ORDERED_SET_FOREACH(m, route->multipath_routes) { |
1710 | union in_addr_union a = m->gateway.address; | |
8ed87c49 | 1711 | Link *l = NULL; |
141318f7 | 1712 | |
76c5a0f2 YW |
1713 | if (route->gateway_onlink <= 0 && |
1714 | !manager_address_is_reachable(link->manager, m->gateway.family, &a)) | |
1715 | return false; | |
141318f7 | 1716 | |
76c5a0f2 | 1717 | if (m->ifname) { |
8ed87c49 | 1718 | if (link_get_by_name(link->manager, m->ifname, &l) < 0) |
76c5a0f2 | 1719 | return false; |
141318f7 | 1720 | |
8ed87c49 YW |
1721 | m->ifindex = l->ifindex; |
1722 | } else if (m->ifindex > 0) { | |
6eab614d | 1723 | if (link_get_by_index(link->manager, m->ifindex, &l) < 0) |
76c5a0f2 | 1724 | return false; |
76c5a0f2 | 1725 | } |
8ed87c49 YW |
1726 | if (l && !link_is_ready_to_configure(l, true)) |
1727 | return false; | |
bd4733da YW |
1728 | } |
1729 | ||
76c5a0f2 YW |
1730 | return true; |
1731 | } | |
1732 | ||
1733 | int request_process_route(Request *req) { | |
5cb76467 YW |
1734 | _cleanup_free_ Route **routes = NULL; |
1735 | unsigned n_routes; | |
76c5a0f2 YW |
1736 | int r; |
1737 | ||
1738 | assert(req); | |
1739 | assert(req->link); | |
1740 | assert(req->route); | |
1741 | assert(req->type == REQUEST_TYPE_ROUTE); | |
1742 | ||
1743 | if (!link_is_ready_to_configure(req->link, false)) | |
1744 | return 0; | |
1745 | ||
1746 | r = route_is_ready_to_configure(req->route, req->link); | |
1747 | if (r <= 0) | |
f345918d | 1748 | return r; |
8c212f76 | 1749 | |
76c5a0f2 | 1750 | r = route_configure(req->route, req->link, req->netlink_handler, |
5cb76467 YW |
1751 | req->after_configure ? &n_routes : NULL, |
1752 | req->after_configure ? &routes : NULL); | |
76c5a0f2 YW |
1753 | if (r < 0) |
1754 | return r; | |
141318f7 | 1755 | |
ce9388d7 YW |
1756 | /* To prevent a double decrement on failure in after_configure(). */ |
1757 | req->message_counter = NULL; | |
1758 | ||
76c5a0f2 | 1759 | if (req->after_configure) { |
5cb76467 YW |
1760 | assert(n_routes > 0); |
1761 | ||
1762 | for (unsigned i = 0; i < n_routes; i++) { | |
1763 | r = req->after_configure(req, routes[i]); | |
1764 | if (r < 0) | |
1765 | return r; | |
1766 | } | |
76c5a0f2 | 1767 | } |
141318f7 | 1768 | |
76c5a0f2 | 1769 | return 1; |
141318f7 YW |
1770 | } |
1771 | ||
f9bb3338 YW |
1772 | static int process_route_one(Manager *manager, Link *link, uint16_t type, const Route *tmp, const MultipathRoute *m) { |
1773 | _cleanup_(route_freep) Route *nr = NULL; | |
1774 | Route *route = NULL; | |
324e3422 | 1775 | NextHop *nh = NULL; |
f9bb3338 YW |
1776 | int r; |
1777 | ||
1778 | assert(manager); | |
1779 | assert(tmp); | |
1780 | assert(IN_SET(type, RTM_NEWROUTE, RTM_DELROUTE)); | |
1781 | ||
324e3422 YW |
1782 | (void) manager_get_nexthop_by_id(manager, tmp->nexthop_id, &nh); |
1783 | ||
228c3e21 YW |
1784 | if (nh && hashmap_isempty(nh->group)) { |
1785 | if (link && nh->link && link != nh->link) | |
324e3422 YW |
1786 | return log_link_warning_errno(link, SYNTHETIC_ERRNO(EINVAL), |
1787 | "rtnl: received RTA_OIF and ifindex of nexthop corresponding to RTA_NH_ID do not match, ignoring."); | |
1788 | ||
228c3e21 YW |
1789 | if (nh->link) |
1790 | link = nh->link; | |
324e3422 YW |
1791 | |
1792 | r = route_new(&nr); | |
1793 | if (r < 0) | |
1794 | return log_oom(); | |
1795 | ||
228c3e21 | 1796 | route_copy(nr, tmp, NULL, nh, UINT8_MAX); |
324e3422 YW |
1797 | |
1798 | tmp = nr; | |
1799 | } else if (m) { | |
f9bb3338 YW |
1800 | if (link) |
1801 | return log_link_warning_errno(link, SYNTHETIC_ERRNO(EINVAL), | |
1802 | "rtnl: received route contains both RTA_OIF and RTA_MULTIPATH, ignoring."); | |
1803 | ||
1804 | if (m->ifindex <= 0) | |
1805 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
1806 | "rtnl: received multipath route with invalid ifindex, ignoring."); | |
1807 | ||
6eab614d | 1808 | r = link_get_by_index(manager, m->ifindex, &link); |
f9bb3338 YW |
1809 | if (r < 0) { |
1810 | log_warning_errno(r, "rtnl: received multipath route for link (%d) we do not know, ignoring: %m", m->ifindex); | |
1811 | return 0; | |
1812 | } | |
1813 | ||
1814 | r = route_new(&nr); | |
1815 | if (r < 0) | |
1816 | return log_oom(); | |
1817 | ||
228c3e21 | 1818 | route_copy(nr, tmp, m, NULL, UINT8_MAX); |
f9bb3338 YW |
1819 | |
1820 | tmp = nr; | |
1821 | } | |
1822 | ||
1823 | (void) route_get(manager, link, tmp, &route); | |
1824 | ||
f9bb3338 YW |
1825 | switch (type) { |
1826 | case RTM_NEWROUTE: | |
167a5561 YW |
1827 | if (!route) { |
1828 | if (!manager->manage_foreign_routes) | |
552b90a2 | 1829 | log_route_debug(tmp, "Ignoring received foreign", link, manager); |
167a5561 YW |
1830 | else { |
1831 | /* A route appeared that we did not request */ | |
552b90a2 | 1832 | log_route_debug(tmp, "Remembering foreign", link, manager); |
167a5561 YW |
1833 | r = route_add_foreign(manager, link, tmp, NULL); |
1834 | if (r < 0) { | |
1835 | log_link_warning_errno(link, r, "Failed to remember foreign route, ignoring: %m"); | |
1836 | return 0; | |
1837 | } | |
f9bb3338 | 1838 | } |
167a5561 | 1839 | } else |
552b90a2 | 1840 | log_route_debug(tmp, "Received remembered", link, manager); |
f9bb3338 YW |
1841 | |
1842 | break; | |
1843 | ||
1844 | case RTM_DELROUTE: | |
167a5561 YW |
1845 | log_route_debug(tmp, |
1846 | route ? "Forgetting" : | |
552b90a2 YW |
1847 | manager->manage_foreign_routes ? "Kernel removed unknown" : "Ignoring received foreign", |
1848 | link, manager); | |
f9bb3338 YW |
1849 | route_free(route); |
1850 | break; | |
1851 | ||
1852 | default: | |
1853 | assert_not_reached("Received route message with invalid RTNL message type"); | |
1854 | } | |
1855 | ||
1856 | return 1; | |
1857 | } | |
1858 | ||
4468f01b | 1859 | int manager_rtnl_process_route(sd_netlink *rtnl, sd_netlink_message *message, Manager *m) { |
f9bb3338 | 1860 | _cleanup_ordered_set_free_free_ OrderedSet *multipath_routes = NULL; |
4468f01b | 1861 | _cleanup_(route_freep) Route *tmp = NULL; |
f9bb3338 | 1862 | _cleanup_free_ void *rta_multipath = NULL; |
4468f01b YW |
1863 | Link *link = NULL; |
1864 | uint32_t ifindex; | |
1865 | uint16_t type; | |
1866 | unsigned char table; | |
f9bb3338 | 1867 | size_t rta_len; |
4468f01b YW |
1868 | int r; |
1869 | ||
1870 | assert(rtnl); | |
1871 | assert(message); | |
1872 | assert(m); | |
1873 | ||
1874 | if (sd_netlink_message_is_error(message)) { | |
1875 | r = sd_netlink_message_get_errno(message); | |
1876 | if (r < 0) | |
1877 | log_message_warning_errno(message, r, "rtnl: failed to receive route message, ignoring"); | |
1878 | ||
1879 | return 0; | |
1880 | } | |
1881 | ||
1882 | r = sd_netlink_message_get_type(message, &type); | |
1883 | if (r < 0) { | |
1884 | log_warning_errno(r, "rtnl: could not get message type, ignoring: %m"); | |
1885 | return 0; | |
1886 | } else if (!IN_SET(type, RTM_NEWROUTE, RTM_DELROUTE)) { | |
1887 | log_warning("rtnl: received unexpected message type %u when processing route, ignoring.", type); | |
1888 | return 0; | |
1889 | } | |
1890 | ||
1891 | r = sd_netlink_message_read_u32(message, RTA_OIF, &ifindex); | |
ad208fac | 1892 | if (r < 0 && r != -ENODATA) { |
4468f01b YW |
1893 | log_warning_errno(r, "rtnl: could not get ifindex from route message, ignoring: %m"); |
1894 | return 0; | |
ad208fac YW |
1895 | } else if (r >= 0) { |
1896 | if (ifindex <= 0) { | |
1897 | log_warning("rtnl: received route message with invalid ifindex %d, ignoring.", ifindex); | |
1898 | return 0; | |
1899 | } | |
4468f01b | 1900 | |
6eab614d | 1901 | r = link_get_by_index(m, ifindex, &link); |
ad208fac YW |
1902 | if (r < 0 || !link) { |
1903 | /* when enumerating we might be out of sync, but we will | |
1904 | * get the route again, so just ignore it */ | |
1905 | if (!m->enumerating) | |
1906 | log_warning("rtnl: received route message for link (%d) we do not know about, ignoring", ifindex); | |
1907 | return 0; | |
1908 | } | |
4468f01b YW |
1909 | } |
1910 | ||
1911 | r = route_new(&tmp); | |
1912 | if (r < 0) | |
1913 | return log_oom(); | |
1914 | ||
1915 | r = sd_rtnl_message_route_get_family(message, &tmp->family); | |
1916 | if (r < 0) { | |
1917 | log_link_warning(link, "rtnl: received route message without family, ignoring"); | |
1918 | return 0; | |
1919 | } else if (!IN_SET(tmp->family, AF_INET, AF_INET6)) { | |
1920 | log_link_debug(link, "rtnl: received route message with invalid family '%i', ignoring", tmp->family); | |
1921 | return 0; | |
1922 | } | |
1923 | ||
1924 | r = sd_rtnl_message_route_get_protocol(message, &tmp->protocol); | |
1925 | if (r < 0) { | |
1926 | log_warning_errno(r, "rtnl: received route message without route protocol: %m"); | |
1927 | return 0; | |
1928 | } | |
1929 | ||
ad6df717 YW |
1930 | r = netlink_message_read_in_addr_union(message, RTA_DST, tmp->family, &tmp->dst); |
1931 | if (r < 0 && r != -ENODATA) { | |
1932 | log_link_warning_errno(link, r, "rtnl: received route message without valid destination, ignoring: %m"); | |
1933 | return 0; | |
1934 | } | |
4468f01b | 1935 | |
ad6df717 YW |
1936 | r = netlink_message_read_in_addr_union(message, RTA_GATEWAY, tmp->family, &tmp->gw); |
1937 | if (r < 0 && r != -ENODATA) { | |
1938 | log_link_warning_errno(link, r, "rtnl: received route message without valid gateway, ignoring: %m"); | |
1939 | return 0; | |
1940 | } else if (r >= 0) | |
1941 | tmp->gw_family = tmp->family; | |
1942 | else if (tmp->family == AF_INET) { | |
1943 | RouteVia via; | |
6dd53981 YW |
1944 | |
1945 | r = sd_netlink_message_read(message, RTA_VIA, sizeof(via), &via); | |
1946 | if (r < 0 && r != -ENODATA) { | |
1947 | log_link_warning_errno(link, r, "rtnl: received route message without valid gateway, ignoring: %m"); | |
1948 | return 0; | |
1949 | } else if (r >= 0) { | |
1950 | tmp->gw_family = via.family; | |
1951 | tmp->gw = via.address; | |
4468f01b | 1952 | } |
ad6df717 | 1953 | } |
4468f01b | 1954 | |
ad6df717 YW |
1955 | r = netlink_message_read_in_addr_union(message, RTA_SRC, tmp->family, &tmp->src); |
1956 | if (r < 0 && r != -ENODATA) { | |
1957 | log_link_warning_errno(link, r, "rtnl: received route message without valid source, ignoring: %m"); | |
1958 | return 0; | |
1959 | } | |
4468f01b | 1960 | |
ad6df717 YW |
1961 | r = netlink_message_read_in_addr_union(message, RTA_PREFSRC, tmp->family, &tmp->prefsrc); |
1962 | if (r < 0 && r != -ENODATA) { | |
1963 | log_link_warning_errno(link, r, "rtnl: received route message without valid preferred source, ignoring: %m"); | |
4468f01b YW |
1964 | return 0; |
1965 | } | |
1966 | ||
1967 | r = sd_rtnl_message_route_get_dst_prefixlen(message, &tmp->dst_prefixlen); | |
1968 | if (r < 0) { | |
1969 | log_link_warning_errno(link, r, "rtnl: received route message with invalid destination prefixlen, ignoring: %m"); | |
1970 | return 0; | |
1971 | } | |
1972 | ||
1973 | r = sd_rtnl_message_route_get_src_prefixlen(message, &tmp->src_prefixlen); | |
1974 | if (r < 0) { | |
1975 | log_link_warning_errno(link, r, "rtnl: received route message with invalid source prefixlen, ignoring: %m"); | |
1976 | return 0; | |
1977 | } | |
1978 | ||
1979 | r = sd_rtnl_message_route_get_scope(message, &tmp->scope); | |
1980 | if (r < 0) { | |
1981 | log_link_warning_errno(link, r, "rtnl: received route message with invalid scope, ignoring: %m"); | |
1982 | return 0; | |
1983 | } | |
1984 | ||
1985 | r = sd_rtnl_message_route_get_tos(message, &tmp->tos); | |
1986 | if (r < 0) { | |
1987 | log_link_warning_errno(link, r, "rtnl: received route message with invalid tos, ignoring: %m"); | |
1988 | return 0; | |
1989 | } | |
1990 | ||
1991 | r = sd_rtnl_message_route_get_type(message, &tmp->type); | |
1992 | if (r < 0) { | |
1993 | log_link_warning_errno(link, r, "rtnl: received route message with invalid type, ignoring: %m"); | |
1994 | return 0; | |
1995 | } | |
1996 | ||
1997 | r = sd_rtnl_message_route_get_table(message, &table); | |
1998 | if (r < 0) { | |
1999 | log_link_warning_errno(link, r, "rtnl: received route message with invalid table, ignoring: %m"); | |
2000 | return 0; | |
2001 | } | |
2002 | tmp->table = table; | |
2003 | ||
2004 | r = sd_netlink_message_read_u32(message, RTA_PRIORITY, &tmp->priority); | |
2005 | if (r < 0 && r != -ENODATA) { | |
2006 | log_link_warning_errno(link, r, "rtnl: received route message with invalid priority, ignoring: %m"); | |
2007 | return 0; | |
2008 | } | |
2009 | ||
324e3422 YW |
2010 | r = sd_netlink_message_read_u32(message, RTA_NH_ID, &tmp->nexthop_id); |
2011 | if (r < 0 && r != -ENODATA) { | |
2012 | log_link_warning_errno(link, r, "rtnl: received route message with invalid nexthop id, ignoring: %m"); | |
2013 | return 0; | |
2014 | } | |
2015 | ||
4468f01b YW |
2016 | r = sd_netlink_message_enter_container(message, RTA_METRICS); |
2017 | if (r < 0 && r != -ENODATA) { | |
2018 | log_link_error_errno(link, r, "rtnl: Could not enter RTA_METRICS container: %m"); | |
2019 | return 0; | |
2020 | } | |
2021 | if (r >= 0) { | |
2022 | r = sd_netlink_message_read_u32(message, RTAX_INITCWND, &tmp->initcwnd); | |
2023 | if (r < 0 && r != -ENODATA) { | |
2024 | log_link_warning_errno(link, r, "rtnl: received route message with invalid initcwnd, ignoring: %m"); | |
2025 | return 0; | |
2026 | } | |
2027 | ||
2028 | r = sd_netlink_message_read_u32(message, RTAX_INITRWND, &tmp->initrwnd); | |
2029 | if (r < 0 && r != -ENODATA) { | |
2030 | log_link_warning_errno(link, r, "rtnl: received route message with invalid initrwnd, ignoring: %m"); | |
2031 | return 0; | |
386e8908 YW |
2032 | } |
2033 | ||
2034 | r = sd_netlink_message_read_u32(message, RTAX_ADVMSS, &tmp->advmss); | |
2035 | if (r < 0 && r != -ENODATA) { | |
2036 | log_link_warning_errno(link, r, "rtnl: received route message with invalid advmss, ignoring: %m"); | |
2037 | return 0; | |
4468f01b YW |
2038 | } |
2039 | ||
2040 | r = sd_netlink_message_exit_container(message); | |
2041 | if (r < 0) { | |
2042 | log_link_error_errno(link, r, "rtnl: Could not exit from RTA_METRICS container: %m"); | |
2043 | return 0; | |
2044 | } | |
2045 | } | |
2046 | ||
f9bb3338 YW |
2047 | r = sd_netlink_message_read_data(message, RTA_MULTIPATH, &rta_len, &rta_multipath); |
2048 | if (r < 0 && r != -ENODATA) { | |
2049 | log_link_warning_errno(link, r, "rtnl: failed to read RTA_MULTIPATH attribute, ignoring: %m"); | |
2050 | return 0; | |
2051 | } else if (r >= 0) { | |
2052 | r = rtattr_read_nexthop(rta_multipath, rta_len, tmp->family, &multipath_routes); | |
2053 | if (r < 0) { | |
2054 | log_link_warning_errno(link, r, "rtnl: failed to parse RTA_MULTIPATH attribute, ignoring: %m"); | |
2055 | return 0; | |
4468f01b | 2056 | } |
4468f01b YW |
2057 | } |
2058 | ||
575f14ee YW |
2059 | /* IPv6 routes with reject type are always assigned to the loopback interface. See kernel's |
2060 | * fib6_nh_init() in net/ipv6/route.c. However, we'd like to manage them by Manager. Hence, set | |
2061 | * link to NULL here. */ | |
2062 | if (route_type_is_reject(tmp)) | |
2063 | link = NULL; | |
2064 | ||
f9bb3338 YW |
2065 | if (ordered_set_isempty(multipath_routes)) |
2066 | (void) process_route_one(m, link, type, tmp, NULL); | |
2067 | else { | |
2068 | MultipathRoute *mr; | |
4468f01b | 2069 | |
f9bb3338 YW |
2070 | ORDERED_SET_FOREACH(mr, multipath_routes) { |
2071 | r = process_route_one(m, link, type, tmp, mr); | |
2072 | if (r < 0) | |
2073 | break; | |
2074 | } | |
4468f01b YW |
2075 | } |
2076 | ||
2077 | return 1; | |
2078 | } | |
2079 | ||
fa7cd711 | 2080 | int network_add_ipv4ll_route(Network *network) { |
fcbf4cb7 | 2081 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
2a54a044 | 2082 | unsigned section_line; |
fa7cd711 YW |
2083 | int r; |
2084 | ||
2085 | assert(network); | |
2086 | ||
2087 | if (!network->ipv4ll_route) | |
2088 | return 0; | |
2089 | ||
2a54a044 YW |
2090 | section_line = hashmap_find_free_section_line(network->routes_by_section); |
2091 | ||
fa7cd711 | 2092 | /* IPv4LLRoute= is in [Network] section. */ |
2a54a044 | 2093 | r = route_new_static(network, network->filename, section_line, &n); |
fa7cd711 YW |
2094 | if (r < 0) |
2095 | return r; | |
2096 | ||
2097 | r = in_addr_from_string(AF_INET, "169.254.0.0", &n->dst); | |
2098 | if (r < 0) | |
2099 | return r; | |
2100 | ||
2101 | n->family = AF_INET; | |
2102 | n->dst_prefixlen = 16; | |
2103 | n->scope = RT_SCOPE_LINK; | |
94d6e299 YW |
2104 | n->scope_set = true; |
2105 | n->table_set = true; | |
fa7cd711 YW |
2106 | n->priority = IPV4LL_ROUTE_METRIC; |
2107 | n->protocol = RTPROT_STATIC; | |
2108 | ||
2109 | TAKE_PTR(n); | |
2110 | return 0; | |
2111 | } | |
2112 | ||
5d5003ab YW |
2113 | int network_add_default_route_on_device(Network *network) { |
2114 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; | |
2a54a044 | 2115 | unsigned section_line; |
5d5003ab YW |
2116 | int r; |
2117 | ||
2118 | assert(network); | |
2119 | ||
2120 | if (!network->default_route_on_device) | |
2121 | return 0; | |
2122 | ||
2a54a044 YW |
2123 | section_line = hashmap_find_free_section_line(network->routes_by_section); |
2124 | ||
5d5003ab | 2125 | /* DefaultRouteOnDevice= is in [Network] section. */ |
2a54a044 | 2126 | r = route_new_static(network, network->filename, section_line, &n); |
5d5003ab YW |
2127 | if (r < 0) |
2128 | return r; | |
2129 | ||
5d5003ab | 2130 | n->family = AF_INET; |
c697db75 YW |
2131 | n->scope = RT_SCOPE_LINK; |
2132 | n->scope_set = true; | |
2133 | n->protocol = RTPROT_STATIC; | |
5d5003ab YW |
2134 | |
2135 | TAKE_PTR(n); | |
2136 | return 0; | |
2137 | } | |
2138 | ||
27efb52b YW |
2139 | int config_parse_gateway( |
2140 | const char *unit, | |
f579559b TG |
2141 | const char *filename, |
2142 | unsigned line, | |
2143 | const char *section, | |
71a61510 | 2144 | unsigned section_line, |
f579559b TG |
2145 | const char *lvalue, |
2146 | int ltype, | |
2147 | const char *rvalue, | |
2148 | void *data, | |
2149 | void *userdata) { | |
44e7b949 | 2150 | |
6ae115c1 | 2151 | Network *network = userdata; |
fcbf4cb7 | 2152 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
7934dede | 2153 | int r; |
f579559b TG |
2154 | |
2155 | assert(filename); | |
6ae115c1 | 2156 | assert(section); |
f579559b TG |
2157 | assert(lvalue); |
2158 | assert(rvalue); | |
2159 | assert(data); | |
2160 | ||
92fe133a | 2161 | if (streq(section, "Network")) { |
2a54a044 YW |
2162 | /* we are not in an Route section, so use line number instead */ |
2163 | r = route_new_static(network, filename, line, &n); | |
d96edb2c YW |
2164 | if (r == -ENOMEM) |
2165 | return log_oom(); | |
2166 | if (r < 0) { | |
2167 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2168 | "Failed to allocate route, ignoring assignment: %m"); | |
2169 | return 0; | |
2170 | } | |
1985c54f | 2171 | } else { |
f4859fc7 | 2172 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
2173 | if (r == -ENOMEM) |
2174 | return log_oom(); | |
2175 | if (r < 0) { | |
2176 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2177 | "Failed to allocate route, ignoring assignment: %m"); | |
2178 | return 0; | |
2179 | } | |
1985c54f | 2180 | |
d442bb37 | 2181 | if (isempty(rvalue)) { |
1a3a6309 | 2182 | n->gateway_from_dhcp_or_ra = false; |
d442bb37 YW |
2183 | n->gw_family = AF_UNSPEC; |
2184 | n->gw = IN_ADDR_NULL; | |
2185 | TAKE_PTR(n); | |
2186 | return 0; | |
2187 | } | |
2188 | ||
427928ca | 2189 | if (streq(rvalue, "_dhcp")) { |
1a3a6309 | 2190 | n->gateway_from_dhcp_or_ra = true; |
1985c54f YW |
2191 | TAKE_PTR(n); |
2192 | return 0; | |
2193 | } | |
d306d1d0 YW |
2194 | |
2195 | if (streq(rvalue, "_dhcp4")) { | |
2196 | n->gw_family = AF_INET; | |
1a3a6309 | 2197 | n->gateway_from_dhcp_or_ra = true; |
d306d1d0 YW |
2198 | TAKE_PTR(n); |
2199 | return 0; | |
2200 | } | |
2201 | ||
b8caa4ef | 2202 | if (streq(rvalue, "_ipv6ra")) { |
d306d1d0 | 2203 | n->gw_family = AF_INET6; |
1a3a6309 | 2204 | n->gateway_from_dhcp_or_ra = true; |
d306d1d0 YW |
2205 | TAKE_PTR(n); |
2206 | return 0; | |
2207 | } | |
1985c54f | 2208 | } |
f579559b | 2209 | |
6dd53981 | 2210 | r = in_addr_from_string_auto(rvalue, &n->gw_family, &n->gw); |
f579559b | 2211 | if (r < 0) { |
d96edb2c | 2212 | log_syntax(unit, LOG_WARNING, filename, line, r, |
01d4e732 | 2213 | "Invalid %s='%s', ignoring assignment: %m", lvalue, rvalue); |
f579559b TG |
2214 | return 0; |
2215 | } | |
2216 | ||
1a3a6309 | 2217 | n->gateway_from_dhcp_or_ra = false; |
aff44301 | 2218 | TAKE_PTR(n); |
f579559b TG |
2219 | return 0; |
2220 | } | |
6ae115c1 | 2221 | |
27efb52b YW |
2222 | int config_parse_preferred_src( |
2223 | const char *unit, | |
0d07e595 JK |
2224 | const char *filename, |
2225 | unsigned line, | |
2226 | const char *section, | |
2227 | unsigned section_line, | |
2228 | const char *lvalue, | |
2229 | int ltype, | |
2230 | const char *rvalue, | |
2231 | void *data, | |
2232 | void *userdata) { | |
2233 | ||
2234 | Network *network = userdata; | |
fcbf4cb7 | 2235 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
7934dede | 2236 | int r; |
0d07e595 JK |
2237 | |
2238 | assert(filename); | |
2239 | assert(section); | |
2240 | assert(lvalue); | |
2241 | assert(rvalue); | |
2242 | assert(data); | |
2243 | ||
f4859fc7 | 2244 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
2245 | if (r == -ENOMEM) |
2246 | return log_oom(); | |
2247 | if (r < 0) { | |
2248 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2249 | "Failed to allocate route, ignoring assignment: %m"); | |
2250 | return 0; | |
2251 | } | |
0d07e595 | 2252 | |
01d4e732 YW |
2253 | if (n->family == AF_UNSPEC) |
2254 | r = in_addr_from_string_auto(rvalue, &n->family, &n->prefsrc); | |
2255 | else | |
2256 | r = in_addr_from_string(n->family, rvalue, &n->prefsrc); | |
0d07e595 | 2257 | if (r < 0) { |
d96edb2c | 2258 | log_syntax(unit, LOG_WARNING, filename, line, EINVAL, |
01d4e732 | 2259 | "Invalid %s='%s', ignoring assignment: %m", lvalue, rvalue); |
0d07e595 JK |
2260 | return 0; |
2261 | } | |
2262 | ||
aff44301 | 2263 | TAKE_PTR(n); |
0d07e595 JK |
2264 | return 0; |
2265 | } | |
2266 | ||
27efb52b YW |
2267 | int config_parse_destination( |
2268 | const char *unit, | |
6ae115c1 TG |
2269 | const char *filename, |
2270 | unsigned line, | |
2271 | const char *section, | |
2272 | unsigned section_line, | |
2273 | const char *lvalue, | |
2274 | int ltype, | |
2275 | const char *rvalue, | |
2276 | void *data, | |
2277 | void *userdata) { | |
44e7b949 | 2278 | |
6ae115c1 | 2279 | Network *network = userdata; |
fcbf4cb7 | 2280 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
7934dede YW |
2281 | union in_addr_union *buffer; |
2282 | unsigned char *prefixlen; | |
ca3bad65 | 2283 | int r; |
6ae115c1 TG |
2284 | |
2285 | assert(filename); | |
2286 | assert(section); | |
2287 | assert(lvalue); | |
2288 | assert(rvalue); | |
2289 | assert(data); | |
2290 | ||
f4859fc7 | 2291 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
2292 | if (r == -ENOMEM) |
2293 | return log_oom(); | |
2294 | if (r < 0) { | |
2295 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2296 | "Failed to allocate route, ignoring assignment: %m"); | |
2297 | return 0; | |
2298 | } | |
6ae115c1 | 2299 | |
9e7e4408 | 2300 | if (streq(lvalue, "Destination")) { |
7934dede YW |
2301 | buffer = &n->dst; |
2302 | prefixlen = &n->dst_prefixlen; | |
9e7e4408 | 2303 | } else if (streq(lvalue, "Source")) { |
7934dede YW |
2304 | buffer = &n->src; |
2305 | prefixlen = &n->src_prefixlen; | |
9e7e4408 TG |
2306 | } else |
2307 | assert_not_reached(lvalue); | |
2308 | ||
01d4e732 YW |
2309 | if (n->family == AF_UNSPEC) |
2310 | r = in_addr_prefix_from_string_auto(rvalue, &n->family, buffer, prefixlen); | |
2311 | else | |
2312 | r = in_addr_prefix_from_string(rvalue, n->family, buffer, prefixlen); | |
7934dede | 2313 | if (r < 0) { |
d96edb2c | 2314 | log_syntax(unit, LOG_WARNING, filename, line, EINVAL, |
01d4e732 | 2315 | "Invalid %s='%s', ignoring assignment: %m", lvalue, rvalue); |
7934dede YW |
2316 | return 0; |
2317 | } | |
2318 | ||
aff44301 | 2319 | TAKE_PTR(n); |
6ae115c1 TG |
2320 | return 0; |
2321 | } | |
5d8e593d | 2322 | |
27efb52b YW |
2323 | int config_parse_route_priority( |
2324 | const char *unit, | |
2325 | const char *filename, | |
2326 | unsigned line, | |
2327 | const char *section, | |
2328 | unsigned section_line, | |
2329 | const char *lvalue, | |
2330 | int ltype, | |
2331 | const char *rvalue, | |
2332 | void *data, | |
2333 | void *userdata) { | |
2334 | ||
5d8e593d | 2335 | Network *network = userdata; |
fcbf4cb7 | 2336 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
5d8e593d SS |
2337 | int r; |
2338 | ||
2339 | assert(filename); | |
2340 | assert(section); | |
2341 | assert(lvalue); | |
2342 | assert(rvalue); | |
2343 | assert(data); | |
2344 | ||
f4859fc7 | 2345 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
2346 | if (r == -ENOMEM) |
2347 | return log_oom(); | |
2348 | if (r < 0) { | |
2349 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2350 | "Failed to allocate route, ignoring assignment: %m"); | |
2351 | return 0; | |
2352 | } | |
5d8e593d | 2353 | |
aff44301 | 2354 | r = safe_atou32(rvalue, &n->priority); |
1c4b1179 | 2355 | if (r < 0) { |
d96edb2c | 2356 | log_syntax(unit, LOG_WARNING, filename, line, r, |
1c4b1179 SS |
2357 | "Could not parse route priority \"%s\", ignoring assignment: %m", rvalue); |
2358 | return 0; | |
2359 | } | |
5d8e593d | 2360 | |
c27abcf4 | 2361 | n->priority_set = true; |
aff44301 | 2362 | TAKE_PTR(n); |
5d8e593d SS |
2363 | return 0; |
2364 | } | |
769b56a3 | 2365 | |
27efb52b YW |
2366 | int config_parse_route_scope( |
2367 | const char *unit, | |
2368 | const char *filename, | |
2369 | unsigned line, | |
2370 | const char *section, | |
2371 | unsigned section_line, | |
2372 | const char *lvalue, | |
2373 | int ltype, | |
2374 | const char *rvalue, | |
2375 | void *data, | |
2376 | void *userdata) { | |
2377 | ||
769b56a3 | 2378 | Network *network = userdata; |
fcbf4cb7 | 2379 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
769b56a3 TG |
2380 | int r; |
2381 | ||
2382 | assert(filename); | |
2383 | assert(section); | |
2384 | assert(lvalue); | |
2385 | assert(rvalue); | |
2386 | assert(data); | |
2387 | ||
f4859fc7 | 2388 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
2389 | if (r == -ENOMEM) |
2390 | return log_oom(); | |
2391 | if (r < 0) { | |
2392 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2393 | "Failed to allocate route, ignoring assignment: %m"); | |
2394 | return 0; | |
2395 | } | |
769b56a3 | 2396 | |
41b90a1e YW |
2397 | r = route_scope_from_string(rvalue); |
2398 | if (r < 0) { | |
b98680b2 | 2399 | log_syntax(unit, LOG_WARNING, filename, line, r, "Unknown route scope: %s", rvalue); |
769b56a3 TG |
2400 | return 0; |
2401 | } | |
2402 | ||
41b90a1e | 2403 | n->scope = r; |
94d6e299 | 2404 | n->scope_set = true; |
aff44301 | 2405 | TAKE_PTR(n); |
769b56a3 TG |
2406 | return 0; |
2407 | } | |
c953b24c | 2408 | |
324e3422 YW |
2409 | int config_parse_route_nexthop( |
2410 | const char *unit, | |
2411 | const char *filename, | |
2412 | unsigned line, | |
2413 | const char *section, | |
2414 | unsigned section_line, | |
2415 | const char *lvalue, | |
2416 | int ltype, | |
2417 | const char *rvalue, | |
2418 | void *data, | |
2419 | void *userdata) { | |
2420 | ||
2421 | Network *network = userdata; | |
2422 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; | |
2423 | uint32_t id; | |
2424 | int r; | |
2425 | ||
2426 | assert(filename); | |
2427 | assert(section); | |
2428 | assert(lvalue); | |
2429 | assert(rvalue); | |
2430 | assert(data); | |
2431 | ||
2432 | r = route_new_static(network, filename, section_line, &n); | |
2433 | if (r == -ENOMEM) | |
2434 | return log_oom(); | |
2435 | if (r < 0) { | |
2436 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2437 | "Failed to allocate route, ignoring assignment: %m"); | |
2438 | return 0; | |
2439 | } | |
2440 | ||
2441 | if (isempty(rvalue)) { | |
2442 | n->nexthop_id = 0; | |
2443 | TAKE_PTR(n); | |
2444 | return 0; | |
2445 | } | |
2446 | ||
2447 | r = safe_atou32(rvalue, &id); | |
2448 | if (r < 0) { | |
2449 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse nexthop ID, ignoring assignment: %s", rvalue); | |
2450 | return 0; | |
2451 | } | |
2452 | if (id == 0) { | |
2453 | log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid nexthop ID, ignoring assignment: %s", rvalue); | |
2454 | return 0; | |
2455 | } | |
2456 | ||
2457 | n->nexthop_id = id; | |
2458 | TAKE_PTR(n); | |
2459 | return 0; | |
2460 | } | |
2461 | ||
27efb52b YW |
2462 | int config_parse_route_table( |
2463 | const char *unit, | |
2464 | const char *filename, | |
2465 | unsigned line, | |
2466 | const char *section, | |
2467 | unsigned section_line, | |
2468 | const char *lvalue, | |
2469 | int ltype, | |
2470 | const char *rvalue, | |
2471 | void *data, | |
2472 | void *userdata) { | |
2473 | ||
fcbf4cb7 | 2474 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
c953b24c | 2475 | Network *network = userdata; |
c953b24c SS |
2476 | int r; |
2477 | ||
2478 | assert(filename); | |
2479 | assert(section); | |
2480 | assert(lvalue); | |
2481 | assert(rvalue); | |
2482 | assert(data); | |
2483 | ||
f4859fc7 | 2484 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
2485 | if (r == -ENOMEM) |
2486 | return log_oom(); | |
2487 | if (r < 0) { | |
2488 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2489 | "Failed to allocate route, ignoring assignment: %m"); | |
2490 | return 0; | |
2491 | } | |
c953b24c | 2492 | |
552b90a2 | 2493 | r = manager_get_route_table_from_string(network->manager, rvalue, &n->table); |
c038ce46 SS |
2494 | if (r < 0) { |
2495 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2496 | "Could not parse route table number \"%s\", ignoring assignment: %m", rvalue); | |
2497 | return 0; | |
c953b24c SS |
2498 | } |
2499 | ||
94d6e299 | 2500 | n->table_set = true; |
aff44301 | 2501 | TAKE_PTR(n); |
c953b24c SS |
2502 | return 0; |
2503 | } | |
28959f7d | 2504 | |
d96edb2c | 2505 | int config_parse_route_boolean( |
27efb52b YW |
2506 | const char *unit, |
2507 | const char *filename, | |
2508 | unsigned line, | |
2509 | const char *section, | |
2510 | unsigned section_line, | |
2511 | const char *lvalue, | |
2512 | int ltype, | |
2513 | const char *rvalue, | |
2514 | void *data, | |
2515 | void *userdata) { | |
2516 | ||
28959f7d | 2517 | Network *network = userdata; |
fcbf4cb7 | 2518 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
28959f7d SS |
2519 | int r; |
2520 | ||
2521 | assert(filename); | |
2522 | assert(section); | |
2523 | assert(lvalue); | |
2524 | assert(rvalue); | |
2525 | assert(data); | |
2526 | ||
2527 | r = route_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
2528 | if (r == -ENOMEM) |
2529 | return log_oom(); | |
2530 | if (r < 0) { | |
2531 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2532 | "Failed to allocate route, ignoring assignment: %m"); | |
2533 | return 0; | |
2534 | } | |
28959f7d SS |
2535 | |
2536 | r = parse_boolean(rvalue); | |
2537 | if (r < 0) { | |
d96edb2c | 2538 | log_syntax(unit, LOG_WARNING, filename, line, r, |
9cb8c559 | 2539 | "Could not parse %s=\"%s\", ignoring assignment: %m", lvalue, rvalue); |
28959f7d SS |
2540 | return 0; |
2541 | } | |
2542 | ||
d96edb2c YW |
2543 | if (STR_IN_SET(lvalue, "GatewayOnLink", "GatewayOnlink")) |
2544 | n->gateway_onlink = r; | |
2545 | else if (streq(lvalue, "QuickAck")) | |
2546 | n->quickack = r; | |
2547 | else if (streq(lvalue, "FastOpenNoCookie")) | |
2548 | n->fast_open_no_cookie = r; | |
2549 | else if (streq(lvalue, "TTLPropagate")) | |
2550 | n->ttl_propagate = r; | |
2551 | else | |
2552 | assert_not_reached("Invalid lvalue"); | |
54901fd2 | 2553 | |
aff44301 | 2554 | TAKE_PTR(n); |
b5bf6f64 SS |
2555 | return 0; |
2556 | } | |
2557 | ||
27efb52b YW |
2558 | int config_parse_ipv6_route_preference( |
2559 | const char *unit, | |
2560 | const char *filename, | |
2561 | unsigned line, | |
2562 | const char *section, | |
2563 | unsigned section_line, | |
2564 | const char *lvalue, | |
2565 | int ltype, | |
2566 | const char *rvalue, | |
2567 | void *data, | |
2568 | void *userdata) { | |
2569 | ||
b5bf6f64 | 2570 | Network *network = userdata; |
fcbf4cb7 | 2571 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
b5bf6f64 SS |
2572 | int r; |
2573 | ||
4c7bd9cf | 2574 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
2575 | if (r == -ENOMEM) |
2576 | return log_oom(); | |
2577 | if (r < 0) { | |
2578 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2579 | "Failed to allocate route, ignoring assignment: %m"); | |
2580 | return 0; | |
2581 | } | |
4c7bd9cf | 2582 | |
b5bf6f64 SS |
2583 | if (streq(rvalue, "low")) |
2584 | n->pref = ICMPV6_ROUTER_PREF_LOW; | |
2585 | else if (streq(rvalue, "medium")) | |
2586 | n->pref = ICMPV6_ROUTER_PREF_MEDIUM; | |
2587 | else if (streq(rvalue, "high")) | |
2588 | n->pref = ICMPV6_ROUTER_PREF_HIGH; | |
2589 | else { | |
d96edb2c | 2590 | log_syntax(unit, LOG_WARNING, filename, line, 0, "Unknown route preference: %s", rvalue); |
b5bf6f64 SS |
2591 | return 0; |
2592 | } | |
28959f7d | 2593 | |
c27abcf4 | 2594 | n->pref_set = true; |
aff44301 | 2595 | TAKE_PTR(n); |
28959f7d SS |
2596 | return 0; |
2597 | } | |
c83ecc04 | 2598 | |
27efb52b YW |
2599 | int config_parse_route_protocol( |
2600 | const char *unit, | |
2601 | const char *filename, | |
2602 | unsigned line, | |
2603 | const char *section, | |
2604 | unsigned section_line, | |
2605 | const char *lvalue, | |
2606 | int ltype, | |
2607 | const char *rvalue, | |
2608 | void *data, | |
2609 | void *userdata) { | |
2610 | ||
c83ecc04 | 2611 | Network *network = userdata; |
fcbf4cb7 | 2612 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
c83ecc04 SS |
2613 | int r; |
2614 | ||
2615 | r = route_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
2616 | if (r == -ENOMEM) |
2617 | return log_oom(); | |
2618 | if (r < 0) { | |
2619 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2620 | "Failed to allocate route, ignoring assignment: %m"); | |
2621 | return 0; | |
2622 | } | |
c83ecc04 | 2623 | |
1b64651b | 2624 | r = route_protocol_from_string(rvalue); |
e4ffe103 YW |
2625 | if (r < 0) { |
2626 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2627 | "Failed to parse route protocol \"%s\", ignoring assignment: %m", rvalue); | |
2628 | return 0; | |
c83ecc04 SS |
2629 | } |
2630 | ||
e4ffe103 YW |
2631 | n->protocol = r; |
2632 | ||
aff44301 | 2633 | TAKE_PTR(n); |
c83ecc04 SS |
2634 | return 0; |
2635 | } | |
983226f3 | 2636 | |
27efb52b YW |
2637 | int config_parse_route_type( |
2638 | const char *unit, | |
2639 | const char *filename, | |
2640 | unsigned line, | |
2641 | const char *section, | |
2642 | unsigned section_line, | |
2643 | const char *lvalue, | |
2644 | int ltype, | |
2645 | const char *rvalue, | |
2646 | void *data, | |
2647 | void *userdata) { | |
2648 | ||
983226f3 | 2649 | Network *network = userdata; |
fcbf4cb7 | 2650 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
7a22312d | 2651 | int t, r; |
983226f3 SS |
2652 | |
2653 | r = route_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
2654 | if (r == -ENOMEM) |
2655 | return log_oom(); | |
2656 | if (r < 0) { | |
2657 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2658 | "Failed to allocate route, ignoring assignment: %m"); | |
2659 | return 0; | |
2660 | } | |
983226f3 | 2661 | |
7a22312d YW |
2662 | t = route_type_from_string(rvalue); |
2663 | if (t < 0) { | |
b98680b2 | 2664 | log_syntax(unit, LOG_WARNING, filename, line, r, |
f205a92a | 2665 | "Could not parse route type \"%s\", ignoring assignment: %m", rvalue); |
983226f3 SS |
2666 | return 0; |
2667 | } | |
2668 | ||
7a22312d YW |
2669 | n->type = (unsigned char) t; |
2670 | ||
aff44301 | 2671 | TAKE_PTR(n); |
983226f3 SS |
2672 | return 0; |
2673 | } | |
323d9329 | 2674 | |
007cac09 SS |
2675 | int config_parse_tcp_advmss( |
2676 | const char *unit, | |
2677 | const char *filename, | |
2678 | unsigned line, | |
2679 | const char *section, | |
2680 | unsigned section_line, | |
2681 | const char *lvalue, | |
2682 | int ltype, | |
2683 | const char *rvalue, | |
2684 | void *data, | |
2685 | void *userdata) { | |
2686 | ||
2687 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; | |
2688 | Network *network = userdata; | |
2689 | uint64_t u; | |
2690 | int r; | |
2691 | ||
2692 | assert(filename); | |
2693 | assert(section); | |
2694 | assert(lvalue); | |
2695 | assert(rvalue); | |
2696 | assert(data); | |
2697 | ||
2698 | r = route_new_static(network, filename, section_line, &n); | |
2699 | if (r == -ENOMEM) | |
2700 | return log_oom(); | |
2701 | if (r < 0) { | |
2702 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2703 | "Failed to allocate route, ignoring assignment: %m"); | |
2704 | return 0; | |
2705 | } | |
2706 | ||
2707 | if (isempty(rvalue)) { | |
2708 | n->advmss = 0; | |
78ebbf02 | 2709 | TAKE_PTR(n); |
007cac09 SS |
2710 | return 0; |
2711 | } | |
2712 | ||
2713 | r = parse_size(rvalue, 1024, &u); | |
2714 | if (r < 0) { | |
2715 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2716 | "Could not parse TCPAdvertisedMaximumSegmentSize= \"%s\", ignoring assignment: %m", rvalue); | |
2717 | return 0; | |
2718 | } | |
2719 | ||
2720 | if (u == 0 || u > UINT32_MAX) { | |
2721 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
2722 | "Invalid TCPAdvertisedMaximumSegmentSize= \"%s\", ignoring assignment: %m", rvalue); | |
2723 | return 0; | |
2724 | } | |
2725 | ||
2726 | n->advmss = u; | |
2727 | ||
2728 | TAKE_PTR(n); | |
2729 | return 0; | |
2730 | } | |
2731 | ||
27efb52b YW |
2732 | int config_parse_tcp_window( |
2733 | const char *unit, | |
2734 | const char *filename, | |
2735 | unsigned line, | |
2736 | const char *section, | |
2737 | unsigned section_line, | |
2738 | const char *lvalue, | |
2739 | int ltype, | |
2740 | const char *rvalue, | |
2741 | void *data, | |
2742 | void *userdata) { | |
2743 | ||
fcbf4cb7 | 2744 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
6b21ad33 | 2745 | Network *network = userdata; |
fef160b5 | 2746 | uint32_t k; |
323d9329 SS |
2747 | int r; |
2748 | ||
2749 | assert(filename); | |
2750 | assert(section); | |
2751 | assert(lvalue); | |
2752 | assert(rvalue); | |
2753 | assert(data); | |
2754 | ||
2755 | r = route_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
2756 | if (r == -ENOMEM) |
2757 | return log_oom(); | |
2758 | if (r < 0) { | |
2759 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2760 | "Failed to allocate route, ignoring assignment: %m"); | |
2761 | return 0; | |
2762 | } | |
323d9329 | 2763 | |
fef160b5 | 2764 | r = safe_atou32(rvalue, &k); |
f205a92a | 2765 | if (r < 0) { |
d96edb2c | 2766 | log_syntax(unit, LOG_WARNING, filename, line, r, |
f205a92a YW |
2767 | "Could not parse TCP %s \"%s\", ignoring assignment: %m", lvalue, rvalue); |
2768 | return 0; | |
2769 | } | |
fef160b5 | 2770 | if (k >= 1024) { |
d96edb2c | 2771 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
f205a92a | 2772 | "Specified TCP %s \"%s\" is too large, ignoring assignment: %m", lvalue, rvalue); |
323d9329 SS |
2773 | return 0; |
2774 | } | |
fd9d7de1 SS |
2775 | if (k == 0) { |
2776 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
2777 | "Invalid TCP %s \"%s\", ignoring assignment: %m", lvalue, rvalue); | |
2778 | return 0; | |
2779 | } | |
323d9329 SS |
2780 | |
2781 | if (streq(lvalue, "InitialCongestionWindow")) | |
2782 | n->initcwnd = k; | |
2783 | else if (streq(lvalue, "InitialAdvertisedReceiveWindow")) | |
2784 | n->initrwnd = k; | |
f205a92a YW |
2785 | else |
2786 | assert_not_reached("Invalid TCP window type."); | |
323d9329 | 2787 | |
aff44301 | 2788 | TAKE_PTR(n); |
323d9329 SS |
2789 | return 0; |
2790 | } | |
09f5dfad | 2791 | |
cea79e66 SS |
2792 | int config_parse_route_mtu( |
2793 | const char *unit, | |
2794 | const char *filename, | |
2795 | unsigned line, | |
2796 | const char *section, | |
2797 | unsigned section_line, | |
2798 | const char *lvalue, | |
2799 | int ltype, | |
2800 | const char *rvalue, | |
2801 | void *data, | |
2802 | void *userdata) { | |
2803 | ||
2804 | Network *network = userdata; | |
fcbf4cb7 | 2805 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
cea79e66 SS |
2806 | int r; |
2807 | ||
2808 | assert(filename); | |
2809 | assert(section); | |
2810 | assert(lvalue); | |
2811 | assert(rvalue); | |
2812 | assert(data); | |
2813 | ||
2814 | r = route_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
2815 | if (r == -ENOMEM) |
2816 | return log_oom(); | |
2817 | if (r < 0) { | |
2818 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2819 | "Failed to allocate route, ignoring assignment: %m"); | |
2820 | return 0; | |
2821 | } | |
cea79e66 SS |
2822 | |
2823 | r = config_parse_mtu(unit, filename, line, section, section_line, lvalue, ltype, rvalue, &n->mtu, userdata); | |
2824 | if (r < 0) | |
2825 | return r; | |
2826 | ||
aff44301 | 2827 | TAKE_PTR(n); |
cea79e66 SS |
2828 | return 0; |
2829 | } | |
fcbf4cb7 | 2830 | |
6ff5cc6b YW |
2831 | int config_parse_multipath_route( |
2832 | const char *unit, | |
2833 | const char *filename, | |
2834 | unsigned line, | |
2835 | const char *section, | |
2836 | unsigned section_line, | |
2837 | const char *lvalue, | |
2838 | int ltype, | |
2839 | const char *rvalue, | |
2840 | void *data, | |
2841 | void *userdata) { | |
2842 | ||
e8f52f3c | 2843 | _cleanup_(multipath_route_freep) MultipathRoute *m = NULL; |
6ff5cc6b | 2844 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
e8f52f3c | 2845 | _cleanup_free_ char *word = NULL; |
6ff5cc6b | 2846 | Network *network = userdata; |
6ff5cc6b YW |
2847 | union in_addr_union a; |
2848 | int family, r; | |
e8f52f3c YW |
2849 | const char *p; |
2850 | char *dev; | |
6ff5cc6b YW |
2851 | |
2852 | assert(filename); | |
2853 | assert(section); | |
2854 | assert(lvalue); | |
2855 | assert(rvalue); | |
2856 | assert(data); | |
2857 | ||
2858 | r = route_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
2859 | if (r == -ENOMEM) |
2860 | return log_oom(); | |
2861 | if (r < 0) { | |
2862 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2863 | "Failed to allocate route, ignoring assignment: %m"); | |
2864 | return 0; | |
2865 | } | |
6ff5cc6b YW |
2866 | |
2867 | if (isempty(rvalue)) { | |
e8f52f3c | 2868 | n->multipath_routes = ordered_set_free_with_destructor(n->multipath_routes, multipath_route_free); |
6ff5cc6b YW |
2869 | return 0; |
2870 | } | |
2871 | ||
2872 | m = new0(MultipathRoute, 1); | |
2873 | if (!m) | |
2874 | return log_oom(); | |
2875 | ||
2876 | p = rvalue; | |
2877 | r = extract_first_word(&p, &word, NULL, 0); | |
2878 | if (r == -ENOMEM) | |
2879 | return log_oom(); | |
2880 | if (r <= 0) { | |
d96edb2c | 2881 | log_syntax(unit, LOG_WARNING, filename, line, r, |
6ff5cc6b YW |
2882 | "Invalid multipath route option, ignoring assignment: %s", rvalue); |
2883 | return 0; | |
2884 | } | |
2885 | ||
2886 | dev = strchr(word, '@'); | |
2887 | if (dev) { | |
e8f52f3c YW |
2888 | *dev++ = '\0'; |
2889 | ||
8ed87c49 YW |
2890 | r = parse_ifindex(dev); |
2891 | if (r > 0) | |
2892 | m->ifindex = r; | |
2893 | else { | |
70a2d9dd YW |
2894 | if (!ifname_valid_full(dev, IFNAME_VALID_ALTERNATIVE)) { |
2895 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
2896 | "Invalid interface name '%s' in %s=, ignoring: %s", dev, lvalue, rvalue); | |
2897 | return 0; | |
2898 | } | |
2899 | ||
8ed87c49 YW |
2900 | m->ifname = strdup(dev); |
2901 | if (!m->ifname) | |
2902 | return log_oom(); | |
2903 | } | |
e8f52f3c | 2904 | } |
6ff5cc6b | 2905 | |
e8f52f3c | 2906 | r = in_addr_from_string_auto(word, &family, &a); |
6ff5cc6b | 2907 | if (r < 0) { |
d96edb2c | 2908 | log_syntax(unit, LOG_WARNING, filename, line, r, |
6ff5cc6b YW |
2909 | "Invalid multipath route gateway '%s', ignoring assignment: %m", rvalue); |
2910 | return 0; | |
2911 | } | |
2912 | m->gateway.address = a; | |
2913 | m->gateway.family = family; | |
2914 | ||
6ff5cc6b YW |
2915 | if (!isempty(p)) { |
2916 | r = safe_atou32(p, &m->weight); | |
2917 | if (r < 0) { | |
d96edb2c | 2918 | log_syntax(unit, LOG_WARNING, filename, line, r, |
6ff5cc6b YW |
2919 | "Invalid multipath route weight, ignoring assignment: %s", p); |
2920 | return 0; | |
2921 | } | |
234106db YW |
2922 | /* ip command takes weight in the range 1…255, while kernel takes the value in the |
2923 | * range 0…254. MultiPathRoute= setting also takes weight in the same range which ip | |
2924 | * command uses, then networkd decreases by one and stores it to match the range which | |
2925 | * kernel uses. */ | |
6ff5cc6b | 2926 | if (m->weight == 0 || m->weight > 256) { |
d96edb2c | 2927 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
6ff5cc6b YW |
2928 | "Invalid multipath route weight, ignoring assignment: %s", p); |
2929 | return 0; | |
2930 | } | |
234106db | 2931 | m->weight--; |
6ff5cc6b YW |
2932 | } |
2933 | ||
8cb34651 SS |
2934 | r = ordered_set_ensure_put(&n->multipath_routes, NULL, m); |
2935 | if (r == -ENOMEM) | |
6ff5cc6b | 2936 | return log_oom(); |
6ff5cc6b | 2937 | if (r < 0) { |
d96edb2c | 2938 | log_syntax(unit, LOG_WARNING, filename, line, r, |
6ff5cc6b YW |
2939 | "Failed to store multipath route, ignoring assignment: %m"); |
2940 | return 0; | |
2941 | } | |
2942 | ||
2943 | TAKE_PTR(m); | |
2944 | TAKE_PTR(n); | |
2945 | return 0; | |
2946 | } | |
2947 | ||
c038ce46 SS |
2948 | int config_parse_route_table_names( |
2949 | const char *unit, | |
2950 | const char *filename, | |
2951 | unsigned line, | |
2952 | const char *section, | |
2953 | unsigned section_line, | |
2954 | const char *lvalue, | |
2955 | int ltype, | |
2956 | const char *rvalue, | |
2957 | void *data, | |
2958 | void *userdata) { | |
2959 | ||
552b90a2 | 2960 | Manager *m = userdata; |
c038ce46 SS |
2961 | int r; |
2962 | ||
2963 | assert(filename); | |
2964 | assert(lvalue); | |
2965 | assert(rvalue); | |
552b90a2 | 2966 | assert(userdata); |
c038ce46 SS |
2967 | |
2968 | if (isempty(rvalue)) { | |
552b90a2 YW |
2969 | m->route_table_names_by_number = hashmap_free(m->route_table_names_by_number); |
2970 | m->route_table_numbers_by_name = hashmap_free(m->route_table_numbers_by_name); | |
c038ce46 SS |
2971 | return 0; |
2972 | } | |
2973 | ||
310eff72 YW |
2974 | for (const char *p = rvalue;;) { |
2975 | _cleanup_free_ char *name = NULL; | |
2976 | uint32_t table; | |
2977 | char *num; | |
c038ce46 | 2978 | |
310eff72 YW |
2979 | r = extract_first_word(&p, &name, NULL, 0); |
2980 | if (r == -ENOMEM) | |
2981 | return log_oom(); | |
2982 | if (r < 0) { | |
2983 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2984 | "Invalid RouteTable=, ignoring assignment: %s", rvalue); | |
2985 | return 0; | |
2986 | } | |
2987 | if (r == 0) | |
2988 | return 0; | |
c038ce46 | 2989 | |
310eff72 YW |
2990 | num = strchr(name, ':'); |
2991 | if (!num) { | |
2992 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
2993 | "Invalid route table name and number pair, ignoring assignment: %s", name); | |
2994 | continue; | |
2995 | } | |
c038ce46 | 2996 | |
310eff72 | 2997 | *num++ = '\0'; |
c038ce46 | 2998 | |
310eff72 YW |
2999 | if (STR_IN_SET(name, "default", "main", "local")) { |
3000 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
3001 | "Route table name %s already predefined. Ignoring assignment: %s:%s", name, name, num); | |
3002 | continue; | |
3003 | } | |
c038ce46 | 3004 | |
310eff72 YW |
3005 | r = safe_atou32(num, &table); |
3006 | if (r < 0) { | |
3007 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
3008 | "Failed to parse route table number '%s', ignoring assignment: %s:%s", num, name, num); | |
3009 | continue; | |
3010 | } | |
3011 | if (table == 0) { | |
3012 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
3013 | "Invalid route table number, ignoring assignment: %s:%s", name, num); | |
3014 | continue; | |
3015 | } | |
3016 | ||
552b90a2 | 3017 | r = hashmap_ensure_put(&m->route_table_numbers_by_name, &string_hash_ops_free, name, UINT32_TO_PTR(table)); |
310eff72 YW |
3018 | if (r == -ENOMEM) |
3019 | return log_oom(); | |
3020 | if (r == -EEXIST) { | |
3021 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
3022 | "Specified route table name and number pair conflicts with others, ignoring assignment: %s:%s", name, num); | |
3023 | continue; | |
3024 | } | |
3025 | if (r < 0) { | |
3026 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
3027 | "Failed to store route table name and number pair, ignoring assignment: %s:%s", name, num); | |
3028 | continue; | |
3029 | } | |
552b90a2 YW |
3030 | if (r == 0) |
3031 | /* The entry is duplicated. It should not be added to route_table_names_by_number hashmap. */ | |
3032 | continue; | |
3033 | ||
3034 | r = hashmap_ensure_put(&m->route_table_names_by_number, NULL, UINT32_TO_PTR(table), name); | |
3035 | if (r < 0) { | |
3036 | hashmap_remove(m->route_table_numbers_by_name, name); | |
3037 | ||
3038 | if (r == -ENOMEM) | |
3039 | return log_oom(); | |
3040 | if (r == -EEXIST) | |
3041 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
3042 | "Specified route table name and number pair conflicts with others, ignoring assignment: %s:%s", name, num); | |
3043 | else | |
3044 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
3045 | "Failed to store route table name and number pair, ignoring assignment: %s:%s", name, num); | |
3046 | continue; | |
3047 | } | |
3048 | assert(r > 0); | |
3049 | ||
3050 | TAKE_PTR(name); | |
310eff72 | 3051 | } |
c038ce46 SS |
3052 | } |
3053 | ||
d9940a3f | 3054 | static int route_section_verify(Route *route, Network *network) { |
fcbf4cb7 YW |
3055 | if (section_is_invalid(route->section)) |
3056 | return -EINVAL; | |
3057 | ||
956dbf36 | 3058 | if (route->gateway_from_dhcp_or_ra) { |
c3d679c4 YW |
3059 | if (route->gw_family == AF_UNSPEC) { |
3060 | /* When deprecated Gateway=_dhcp is set, then assume gateway family based on other settings. */ | |
3061 | switch (route->family) { | |
3062 | case AF_UNSPEC: | |
3063 | log_warning("%s: Deprecated value \"_dhcp\" is specified for Gateway= in [Route] section from line %u. " | |
3064 | "Please use \"_dhcp4\" or \"_ipv6ra\" instead. Assuming \"_dhcp4\".", | |
3065 | route->section->filename, route->section->line); | |
3066 | route->family = AF_INET; | |
3067 | break; | |
3068 | case AF_INET: | |
3069 | case AF_INET6: | |
3070 | log_warning("%s: Deprecated value \"_dhcp\" is specified for Gateway= in [Route] section from line %u. " | |
3071 | "Assuming \"%s\" based on Destination=, Source=, or PreferredSource= setting.", | |
3072 | route->section->filename, route->section->line, route->family == AF_INET ? "_dhcp4" : "_ipv6ra"); | |
3073 | break; | |
3074 | default: | |
3075 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
3076 | "%s: Invalid route family. Ignoring [Route] section from line %u.", | |
3077 | route->section->filename, route->section->line); | |
3078 | } | |
3079 | route->gw_family = route->family; | |
3080 | } | |
3081 | ||
956dbf36 YW |
3082 | if (route->gw_family == AF_INET && !FLAGS_SET(network->dhcp, ADDRESS_FAMILY_IPV4)) |
3083 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
3084 | "%s: Gateway=\"_dhcp4\" is specified but DHCPv4 client is disabled. " | |
3085 | "Ignoring [Route] section from line %u.", | |
3086 | route->section->filename, route->section->line); | |
3087 | ||
3088 | if (route->gw_family == AF_INET6 && !network->ipv6_accept_ra) | |
3089 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
3090 | "%s: Gateway=\"_ipv6ra\" is specified but IPv6AcceptRA= is disabled. " | |
3091 | "Ignoring [Route] section from line %u.", | |
3092 | route->section->filename, route->section->line); | |
3093 | } | |
3094 | ||
c3d679c4 | 3095 | /* When only Gateway= is specified, assume the route family based on the Gateway address. */ |
6dd53981 YW |
3096 | if (route->family == AF_UNSPEC) |
3097 | route->family = route->gw_family; | |
3098 | ||
fcbf4cb7 YW |
3099 | if (route->family == AF_UNSPEC) { |
3100 | assert(route->section); | |
3101 | ||
c3d679c4 YW |
3102 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), |
3103 | "%s: Route section without Gateway=, Destination=, Source=, " | |
3104 | "or PreferredSource= field configured. " | |
3105 | "Ignoring [Route] section from line %u.", | |
3106 | route->section->filename, route->section->line); | |
fcbf4cb7 YW |
3107 | } |
3108 | ||
6dd53981 YW |
3109 | if (route->family == AF_INET6 && route->gw_family == AF_INET) |
3110 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
3111 | "%s: IPv4 gateway is configured for IPv6 route. " | |
3112 | "Ignoring [Route] section from line %u.", | |
3113 | route->section->filename, route->section->line); | |
3114 | ||
c0d48bc5 YW |
3115 | if (!route->table_set && network->vrf) { |
3116 | route->table = VRF(network->vrf)->table; | |
3117 | route->table_set = true; | |
3118 | } | |
3119 | ||
f5c38922 YW |
3120 | if (!route->table_set && IN_SET(route->type, RTN_LOCAL, RTN_BROADCAST, RTN_ANYCAST, RTN_NAT)) |
3121 | route->table = RT_TABLE_LOCAL; | |
3122 | ||
3123 | if (!route->scope_set && route->family != AF_INET6) { | |
3124 | if (IN_SET(route->type, RTN_LOCAL, RTN_NAT)) | |
3125 | route->scope = RT_SCOPE_HOST; | |
3126 | else if (IN_SET(route->type, RTN_BROADCAST, RTN_ANYCAST, RTN_MULTICAST)) | |
3127 | route->scope = RT_SCOPE_LINK; | |
94d6e299 YW |
3128 | } |
3129 | ||
fd7701bf YW |
3130 | if (route->scope != RT_SCOPE_UNIVERSE && route->family == AF_INET6) { |
3131 | log_warning("%s: Scope= is specified for IPv6 route. It will be ignored.", route->section->filename); | |
3132 | route->scope = RT_SCOPE_UNIVERSE; | |
3133 | } | |
3134 | ||
8973df5c YW |
3135 | if (route->family == AF_INET6 && route->priority == 0) |
3136 | route->priority = IP6_RT_PRIO_USER; | |
3137 | ||
2ddd52d1 YW |
3138 | if (route->gateway_onlink < 0 && in_addr_is_set(route->gw_family, &route->gw) && |
3139 | ordered_hashmap_isempty(network->addresses_by_section)) { | |
3140 | /* If no address is configured, in most cases the gateway cannot be reachable. | |
3141 | * TODO: we may need to improve the condition above. */ | |
fcbf4cb7 YW |
3142 | log_warning("%s: Gateway= without static address configured. " |
3143 | "Enabling GatewayOnLink= option.", | |
3144 | network->filename); | |
3145 | route->gateway_onlink = true; | |
3146 | } | |
3147 | ||
40785f53 YW |
3148 | if (route->family == AF_INET6) { |
3149 | MultipathRoute *m; | |
3150 | ||
3151 | ORDERED_SET_FOREACH(m, route->multipath_routes) | |
3152 | if (m->gateway.family == AF_INET) | |
3153 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
3154 | "%s: IPv4 multipath route is specified for IPv6 route. " | |
3155 | "Ignoring [Route] section from line %u.", | |
3156 | route->section->filename, route->section->line); | |
3157 | } | |
3158 | ||
3c7f1c07 YW |
3159 | if ((route->gateway_from_dhcp_or_ra || |
3160 | in_addr_is_set(route->gw_family, &route->gw)) && | |
3161 | !ordered_set_isempty(route->multipath_routes)) | |
3162 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
3163 | "%s: Gateway= cannot be specified with MultiPathRoute=. " | |
3164 | "Ignoring [Route] section from line %u.", | |
3165 | route->section->filename, route->section->line); | |
3166 | ||
324e3422 | 3167 | if (route->nexthop_id > 0 && |
3c7f1c07 YW |
3168 | (route->gateway_from_dhcp_or_ra || |
3169 | in_addr_is_set(route->gw_family, &route->gw) || | |
324e3422 YW |
3170 | !ordered_set_isempty(route->multipath_routes))) |
3171 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
3172 | "%s: NextHopId= cannot be specified with Gateway= or MultiPathRoute=. " | |
3173 | "Ignoring [Route] section from line %u.", | |
3174 | route->section->filename, route->section->line); | |
3175 | ||
fcbf4cb7 YW |
3176 | return 0; |
3177 | } | |
d9940a3f | 3178 | |
13ffa39f | 3179 | void network_drop_invalid_routes(Network *network) { |
2a54a044 | 3180 | Route *route; |
d9940a3f YW |
3181 | |
3182 | assert(network); | |
3183 | ||
2a54a044 | 3184 | HASHMAP_FOREACH(route, network->routes_by_section) |
d9940a3f YW |
3185 | if (route_section_verify(route, network) < 0) |
3186 | route_free(route); | |
3187 | } |