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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> |
b5bf6f64 | 5 | |
b5efdb8a | 6 | #include "alloc-util.h" |
fc2f9534 | 7 | #include "netlink-util.h" |
ca5ad760 | 8 | #include "networkd-ipv4ll.h" |
23f53b99 | 9 | #include "networkd-manager.h" |
e2263711 | 10 | #include "networkd-network.h" |
141318f7 | 11 | #include "networkd-nexthop.h" |
6bedfcbb | 12 | #include "networkd-route.h" |
141318f7 | 13 | #include "networkd-routing-policy-rule.h" |
6bedfcbb | 14 | #include "parse-util.h" |
d308bb99 | 15 | #include "socket-netlink.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 | ||
68 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(route_scope, int); | |
69 | ||
70 | #define ROUTE_SCOPE_STR_MAX CONST_MAX(DECIMAL_STR_MAX(int), STRLEN("nowhere") + 1) | |
71 | static const char *format_route_scope(int scope, char *buf, size_t size) { | |
72 | const char *s; | |
73 | char *p = buf; | |
74 | ||
75 | s = route_scope_to_string(scope); | |
76 | if (s) | |
77 | strpcpy(&p, size, s); | |
78 | else | |
79 | strpcpyf(&p, size, "%d", scope); | |
80 | ||
81 | return buf; | |
82 | } | |
83 | ||
84 | static const char * const route_table_table[] = { | |
85 | [RT_TABLE_DEFAULT] = "default", | |
86 | [RT_TABLE_MAIN] = "main", | |
87 | [RT_TABLE_LOCAL] = "local", | |
88 | }; | |
89 | ||
c038ce46 | 90 | DEFINE_STRING_TABLE_LOOKUP(route_table, int); |
74154c2e YW |
91 | |
92 | #define ROUTE_TABLE_STR_MAX CONST_MAX(DECIMAL_STR_MAX(int), STRLEN("default") + 1) | |
93 | static const char *format_route_table(int table, char *buf, size_t size) { | |
94 | const char *s; | |
95 | char *p = buf; | |
96 | ||
97 | s = route_table_to_string(table); | |
98 | if (s) | |
99 | strpcpy(&p, size, s); | |
100 | else | |
101 | strpcpyf(&p, size, "%d", table); | |
102 | ||
103 | return buf; | |
104 | } | |
105 | ||
106 | static const char * const route_protocol_table[] = { | |
107 | [RTPROT_KERNEL] = "kernel", | |
108 | [RTPROT_BOOT] = "boot", | |
109 | [RTPROT_STATIC] = "static", | |
110 | }; | |
111 | ||
112 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(route_protocol, int); | |
113 | ||
114 | static const char * const route_protocol_full_table[] = { | |
115 | [RTPROT_REDIRECT] = "redirect", | |
116 | [RTPROT_KERNEL] = "kernel", | |
117 | [RTPROT_BOOT] = "boot", | |
118 | [RTPROT_STATIC] = "static", | |
119 | [RTPROT_GATED] = "gated", | |
120 | [RTPROT_RA] = "ra", | |
121 | [RTPROT_MRT] = "mrt", | |
122 | [RTPROT_ZEBRA] = "zebra", | |
123 | [RTPROT_BIRD] = "bird", | |
124 | [RTPROT_DNROUTED] = "dnrouted", | |
125 | [RTPROT_XORP] = "xorp", | |
126 | [RTPROT_NTK] = "ntk", | |
127 | [RTPROT_DHCP] = "dhcp", | |
128 | [RTPROT_MROUTED] = "mrouted", | |
129 | [RTPROT_BABEL] = "babel", | |
130 | [RTPROT_BGP] = "bgp", | |
131 | [RTPROT_ISIS] = "isis", | |
132 | [RTPROT_OSPF] = "ospf", | |
133 | [RTPROT_RIP] = "rip", | |
134 | [RTPROT_EIGRP] = "eigrp", | |
135 | }; | |
136 | ||
137 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(route_protocol_full, int); | |
138 | ||
139 | #define ROUTE_PROTOCOL_STR_MAX CONST_MAX(DECIMAL_STR_MAX(int), STRLEN("redirect") + 1) | |
140 | static const char *format_route_protocol(int protocol, char *buf, size_t size) { | |
141 | const char *s; | |
142 | char *p = buf; | |
143 | ||
144 | s = route_protocol_full_to_string(protocol); | |
145 | if (s) | |
146 | strpcpy(&p, size, s); | |
147 | else | |
148 | strpcpyf(&p, size, "%d", protocol); | |
149 | ||
150 | return buf; | |
151 | } | |
152 | ||
47d2d30d ZJS |
153 | static unsigned routes_max(void) { |
154 | static thread_local unsigned cached = 0; | |
47d2d30d ZJS |
155 | _cleanup_free_ char *s4 = NULL, *s6 = NULL; |
156 | unsigned val4 = ROUTES_DEFAULT_MAX_PER_FAMILY, val6 = ROUTES_DEFAULT_MAX_PER_FAMILY; | |
157 | ||
158 | if (cached > 0) | |
159 | return cached; | |
160 | ||
778c8795 YW |
161 | if (sysctl_read_ip_property(AF_INET, NULL, "route/max_size", &s4) >= 0) |
162 | if (safe_atou(s4, &val4) >= 0 && val4 == 2147483647U) | |
47d2d30d ZJS |
163 | /* This is the default "no limit" value in the kernel */ |
164 | val4 = ROUTES_DEFAULT_MAX_PER_FAMILY; | |
47d2d30d | 165 | |
778c8795 | 166 | if (sysctl_read_ip_property(AF_INET6, NULL, "route/max_size", &s6) >= 0) |
47d2d30d | 167 | (void) safe_atou(s6, &val6); |
47d2d30d ZJS |
168 | |
169 | cached = MAX(ROUTES_DEFAULT_MAX_PER_FAMILY, val4) + | |
170 | MAX(ROUTES_DEFAULT_MAX_PER_FAMILY, val6); | |
171 | return cached; | |
172 | } | |
8c34b963 | 173 | |
ed9e361a | 174 | int route_new(Route **ret) { |
8e766630 | 175 | _cleanup_(route_freep) Route *route = NULL; |
f0213e37 | 176 | |
17f9c355 | 177 | route = new(Route, 1); |
f0213e37 TG |
178 | if (!route) |
179 | return -ENOMEM; | |
180 | ||
17f9c355 YW |
181 | *route = (Route) { |
182 | .family = AF_UNSPEC, | |
183 | .scope = RT_SCOPE_UNIVERSE, | |
184 | .protocol = RTPROT_UNSPEC, | |
185 | .type = RTN_UNICAST, | |
186 | .table = RT_TABLE_MAIN, | |
187 | .lifetime = USEC_INFINITY, | |
188 | .quickack = -1, | |
633c7258 | 189 | .fast_open_no_cookie = -1, |
54901fd2 | 190 | .gateway_onlink = -1, |
9b88f20a | 191 | .ttl_propagate = -1, |
17f9c355 | 192 | }; |
f0213e37 | 193 | |
1cc6c93a | 194 | *ret = TAKE_PTR(route); |
f0213e37 TG |
195 | |
196 | return 0; | |
197 | } | |
198 | ||
9560e5b3 | 199 | static int route_new_static(Network *network, const char *filename, unsigned section_line, Route **ret) { |
8e766630 LP |
200 | _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; |
201 | _cleanup_(route_freep) Route *route = NULL; | |
f0213e37 | 202 | int r; |
f579559b | 203 | |
8c34b963 LP |
204 | assert(network); |
205 | assert(ret); | |
2a54a044 YW |
206 | assert(filename); |
207 | assert(section_line > 0); | |
f4859fc7 | 208 | |
2a54a044 YW |
209 | r = network_config_section_new(filename, section_line, &n); |
210 | if (r < 0) | |
211 | return r; | |
6ae115c1 | 212 | |
2a54a044 YW |
213 | route = hashmap_get(network->routes_by_section, n); |
214 | if (route) { | |
215 | *ret = TAKE_PTR(route); | |
216 | return 0; | |
6ae115c1 TG |
217 | } |
218 | ||
2a54a044 | 219 | if (hashmap_size(network->routes_by_section) >= routes_max()) |
8c34b963 LP |
220 | return -E2BIG; |
221 | ||
ed9e361a | 222 | r = route_new(&route); |
f0213e37 TG |
223 | if (r < 0) |
224 | return r; | |
801bd9e8 | 225 | |
ed9e361a | 226 | route->protocol = RTPROT_STATIC; |
0f7f2769 | 227 | route->network = network; |
2a54a044 | 228 | route->section = TAKE_PTR(n); |
cacc1dbf | 229 | |
ecd80ce2 | 230 | r = hashmap_ensure_put(&network->routes_by_section, &network_config_hash_ops, route->section, route); |
2a54a044 YW |
231 | if (r < 0) |
232 | return r; | |
6ae115c1 | 233 | |
1cc6c93a | 234 | *ret = TAKE_PTR(route); |
f579559b TG |
235 | return 0; |
236 | } | |
237 | ||
169948e9 | 238 | Route *route_free(Route *route) { |
f579559b | 239 | if (!route) |
169948e9 | 240 | return NULL; |
f579559b | 241 | |
f048a16b | 242 | if (route->network) { |
2a54a044 YW |
243 | assert(route->section); |
244 | hashmap_remove(route->network->routes_by_section, route->section); | |
f048a16b | 245 | } |
6ae115c1 | 246 | |
fd45e522 ZJS |
247 | network_config_section_free(route->section); |
248 | ||
1c8e710c | 249 | if (route->link) { |
50550722 | 250 | NDiscRoute *n; |
50550722 | 251 | |
1c8e710c TG |
252 | set_remove(route->link->routes, route); |
253 | set_remove(route->link->routes_foreign, route); | |
6e537f62 YW |
254 | set_remove(route->link->dhcp_routes, route); |
255 | set_remove(route->link->dhcp_routes_old, route); | |
1633c457 YW |
256 | set_remove(route->link->dhcp6_routes, route); |
257 | set_remove(route->link->dhcp6_routes_old, route); | |
258 | set_remove(route->link->dhcp6_pd_routes, route); | |
259 | set_remove(route->link->dhcp6_pd_routes_old, route); | |
90e74a66 | 260 | SET_FOREACH(n, route->link->ndisc_routes) |
50550722 YW |
261 | if (n->route == route) |
262 | free(set_remove(route->link->ndisc_routes, n)); | |
1c8e710c TG |
263 | } |
264 | ||
ad208fac YW |
265 | if (route->manager) { |
266 | set_remove(route->manager->routes, route); | |
267 | set_remove(route->manager->routes_foreign, route); | |
268 | } | |
269 | ||
6ff5cc6b YW |
270 | ordered_set_free_free(route->multipath_routes); |
271 | ||
f833694d TG |
272 | sd_event_source_unref(route->expire); |
273 | ||
169948e9 | 274 | return mfree(route); |
f579559b TG |
275 | } |
276 | ||
501b09db | 277 | void route_hash_func(const Route *route, struct siphash *state) { |
bb7ae737 TG |
278 | assert(route); |
279 | ||
280 | siphash24_compress(&route->family, sizeof(route->family), state); | |
281 | ||
01aaa3df YW |
282 | switch (route->family) { |
283 | case AF_INET: | |
284 | case AF_INET6: | |
01aaa3df | 285 | siphash24_compress(&route->dst_prefixlen, sizeof(route->dst_prefixlen), state); |
67e05dd8 ZJS |
286 | siphash24_compress(&route->dst, FAMILY_ADDRESS_SIZE(route->family), state); |
287 | ||
01aaa3df | 288 | siphash24_compress(&route->src_prefixlen, sizeof(route->src_prefixlen), state); |
67e05dd8 ZJS |
289 | siphash24_compress(&route->src, FAMILY_ADDRESS_SIZE(route->family), state); |
290 | ||
6dd53981 | 291 | siphash24_compress(&route->gw_family, sizeof(route->gw_family), state); |
40075951 | 292 | if (IN_SET(route->gw_family, AF_INET, AF_INET6)) { |
6dd53981 | 293 | siphash24_compress(&route->gw, FAMILY_ADDRESS_SIZE(route->gw_family), state); |
40075951 YW |
294 | siphash24_compress(&route->gw_weight, sizeof(route->gw_weight), state); |
295 | } | |
67e05dd8 | 296 | |
01aaa3df YW |
297 | siphash24_compress(&route->prefsrc, FAMILY_ADDRESS_SIZE(route->family), state); |
298 | ||
299 | siphash24_compress(&route->tos, sizeof(route->tos), state); | |
300 | siphash24_compress(&route->priority, sizeof(route->priority), state); | |
301 | siphash24_compress(&route->table, sizeof(route->table), state); | |
302 | siphash24_compress(&route->protocol, sizeof(route->protocol), state); | |
303 | siphash24_compress(&route->scope, sizeof(route->scope), state); | |
304 | siphash24_compress(&route->type, sizeof(route->type), state); | |
67e05dd8 | 305 | |
fa3e401a YW |
306 | siphash24_compress(&route->initcwnd, sizeof(route->initcwnd), state); |
307 | siphash24_compress(&route->initrwnd, sizeof(route->initrwnd), state); | |
01aaa3df | 308 | |
007cac09 SS |
309 | siphash24_compress(&route->advmss, sizeof(route->advmss), state); |
310 | ||
01aaa3df YW |
311 | break; |
312 | default: | |
313 | /* treat any other address family as AF_UNSPEC */ | |
314 | break; | |
315 | } | |
316 | } | |
317 | ||
501b09db | 318 | int route_compare_func(const Route *a, const Route *b) { |
01aaa3df YW |
319 | int r; |
320 | ||
321 | r = CMP(a->family, b->family); | |
322 | if (r != 0) | |
323 | return r; | |
324 | ||
325 | switch (a->family) { | |
326 | case AF_INET: | |
327 | case AF_INET6: | |
328 | r = CMP(a->dst_prefixlen, b->dst_prefixlen); | |
329 | if (r != 0) | |
330 | return r; | |
331 | ||
67e05dd8 ZJS |
332 | r = memcmp(&a->dst, &b->dst, FAMILY_ADDRESS_SIZE(a->family)); |
333 | if (r != 0) | |
334 | return r; | |
335 | ||
01aaa3df YW |
336 | r = CMP(a->src_prefixlen, b->src_prefixlen); |
337 | if (r != 0) | |
338 | return r; | |
339 | ||
67e05dd8 | 340 | r = memcmp(&a->src, &b->src, FAMILY_ADDRESS_SIZE(a->family)); |
01aaa3df YW |
341 | if (r != 0) |
342 | return r; | |
343 | ||
6dd53981 | 344 | r = CMP(a->gw_family, b->gw_family); |
01aaa3df YW |
345 | if (r != 0) |
346 | return r; | |
347 | ||
6dd53981 YW |
348 | if (IN_SET(a->gw_family, AF_INET, AF_INET6)) { |
349 | r = memcmp(&a->gw, &b->gw, FAMILY_ADDRESS_SIZE(a->family)); | |
350 | if (r != 0) | |
351 | return r; | |
40075951 YW |
352 | |
353 | r = CMP(a->gw_weight, b->gw_weight); | |
354 | if (r != 0) | |
355 | return r; | |
6dd53981 YW |
356 | } |
357 | ||
67e05dd8 | 358 | r = memcmp(&a->prefsrc, &b->prefsrc, FAMILY_ADDRESS_SIZE(a->family)); |
01aaa3df YW |
359 | if (r != 0) |
360 | return r; | |
361 | ||
67e05dd8 | 362 | r = CMP(a->tos, b->tos); |
01aaa3df YW |
363 | if (r != 0) |
364 | return r; | |
365 | ||
67e05dd8 | 366 | r = CMP(a->priority, b->priority); |
01aaa3df YW |
367 | if (r != 0) |
368 | return r; | |
369 | ||
67e05dd8 | 370 | r = CMP(a->table, b->table); |
01aaa3df YW |
371 | if (r != 0) |
372 | return r; | |
373 | ||
67e05dd8 | 374 | r = CMP(a->protocol, b->protocol); |
fa3e401a YW |
375 | if (r != 0) |
376 | return r; | |
377 | ||
67e05dd8 | 378 | r = CMP(a->scope, b->scope); |
fa3e401a YW |
379 | if (r != 0) |
380 | return r; | |
381 | ||
67e05dd8 | 382 | r = CMP(a->type, b->type); |
01aaa3df YW |
383 | if (r != 0) |
384 | return r; | |
385 | ||
67e05dd8 | 386 | r = CMP(a->initcwnd, b->initcwnd); |
01aaa3df YW |
387 | if (r != 0) |
388 | return r; | |
389 | ||
67e05dd8 | 390 | r = CMP(a->initrwnd, b->initrwnd); |
01aaa3df YW |
391 | if (r != 0) |
392 | return r; | |
393 | ||
007cac09 SS |
394 | r = CMP(a->advmss, b->advmss); |
395 | if (r != 0) | |
396 | return r; | |
397 | ||
67e05dd8 | 398 | return 0; |
01aaa3df YW |
399 | default: |
400 | /* treat any other address family as AF_UNSPEC */ | |
401 | return 0; | |
402 | } | |
403 | } | |
404 | ||
405 | DEFINE_HASH_OPS_WITH_KEY_DESTRUCTOR( | |
c077a205 | 406 | route_hash_ops, |
01aaa3df | 407 | Route, |
c077a205 YW |
408 | route_hash_func, |
409 | route_compare_func, | |
01aaa3df YW |
410 | route_free); |
411 | ||
423c249c | 412 | static bool route_equal(const Route *r1, const Route *r2) { |
7ecf0c3e TJ |
413 | if (r1 == r2) |
414 | return true; | |
415 | ||
416 | if (!r1 || !r2) | |
417 | return false; | |
418 | ||
419 | return route_compare_func(r1, r2) == 0; | |
420 | } | |
421 | ||
423c249c | 422 | static int route_get(const Manager *manager, const Link *link, const Route *in, Route **ret) { |
f1368755 | 423 | Route *existing; |
1b566071 | 424 | |
ad208fac | 425 | assert(manager || link); |
f1368755 | 426 | assert(in); |
1c8e710c | 427 | |
ad208fac YW |
428 | if (link) { |
429 | existing = set_get(link->routes, in); | |
430 | if (existing) { | |
431 | if (ret) | |
432 | *ret = existing; | |
433 | return 1; | |
434 | } | |
1c8e710c | 435 | |
ad208fac YW |
436 | existing = set_get(link->routes_foreign, in); |
437 | if (existing) { | |
438 | if (ret) | |
439 | *ret = existing; | |
440 | return 0; | |
441 | } | |
442 | } else { | |
443 | existing = set_get(manager->routes, in); | |
444 | if (existing) { | |
445 | if (ret) | |
446 | *ret = existing; | |
447 | return 1; | |
448 | } | |
449 | ||
450 | existing = set_get(manager->routes_foreign, in); | |
451 | if (existing) { | |
452 | if (ret) | |
453 | *ret = existing; | |
454 | return 0; | |
455 | } | |
1b566071 | 456 | } |
1c8e710c | 457 | |
1b566071 | 458 | return -ENOENT; |
1c8e710c TG |
459 | } |
460 | ||
f9bb3338 YW |
461 | static void route_copy(Route *dest, const Route *src, const MultipathRoute *m) { |
462 | assert(dest); | |
463 | assert(src); | |
464 | ||
465 | dest->family = src->family; | |
466 | dest->src = src->src; | |
467 | dest->src_prefixlen = src->src_prefixlen; | |
468 | dest->dst = src->dst; | |
469 | dest->dst_prefixlen = src->dst_prefixlen; | |
470 | dest->prefsrc = src->prefsrc; | |
471 | dest->scope = src->scope; | |
472 | dest->protocol = src->protocol; | |
473 | dest->type = src->type; | |
474 | dest->tos = src->tos; | |
475 | dest->priority = src->priority; | |
476 | dest->table = src->table; | |
477 | dest->initcwnd = src->initcwnd; | |
478 | dest->initrwnd = src->initrwnd; | |
479 | dest->lifetime = src->lifetime; | |
007cac09 | 480 | dest->advmss= src->advmss; |
f9bb3338 YW |
481 | |
482 | if (m) { | |
483 | dest->gw_family = m->gateway.family; | |
484 | dest->gw = m->gateway.address; | |
485 | dest->gw_weight = m->weight; | |
486 | } else { | |
487 | dest->gw_family = src->gw_family; | |
488 | dest->gw = src->gw; | |
40075951 | 489 | dest->gw_weight = src->gw_weight; |
f9bb3338 YW |
490 | } |
491 | } | |
889b550f | 492 | |
cc17f75f | 493 | static int route_add_internal(Manager *manager, Link *link, Set **routes, const Route *in, Route **ret) { |
8e766630 | 494 | _cleanup_(route_freep) Route *route = NULL; |
1c8e710c TG |
495 | int r; |
496 | ||
ad208fac | 497 | assert(manager || link); |
1c8e710c | 498 | assert(routes); |
f1368755 | 499 | assert(in); |
1c8e710c TG |
500 | |
501 | r = route_new(&route); | |
502 | if (r < 0) | |
503 | return r; | |
504 | ||
cc17f75f | 505 | route_copy(route, in, NULL); |
1c8e710c | 506 | |
de7fef4b | 507 | r = set_ensure_put(routes, &route_hash_ops, route); |
1c8e710c TG |
508 | if (r < 0) |
509 | return r; | |
75a302b5 YW |
510 | if (r == 0) |
511 | return -EEXIST; | |
1c8e710c TG |
512 | |
513 | route->link = link; | |
ad208fac | 514 | route->manager = manager; |
1c8e710c TG |
515 | |
516 | if (ret) | |
517 | *ret = route; | |
518 | ||
519 | route = NULL; | |
520 | ||
521 | return 0; | |
522 | } | |
523 | ||
423c249c | 524 | static int route_add_foreign(Manager *manager, Link *link, const Route *in, Route **ret) { |
ad208fac | 525 | assert(manager || link); |
cc17f75f | 526 | return route_add_internal(manager, link, link ? &link->routes_foreign : &manager->routes_foreign, in, ret); |
1c8e710c TG |
527 | } |
528 | ||
f9bb3338 | 529 | static int route_add(Manager *manager, Link *link, const Route *in, const MultipathRoute *m, Route **ret) { |
cc17f75f | 530 | _cleanup_(route_freep) Route *tmp = NULL; |
1c8e710c TG |
531 | Route *route; |
532 | int r; | |
533 | ||
ad208fac YW |
534 | assert(manager || link); |
535 | assert(in); | |
536 | ||
cc17f75f YW |
537 | if (m) { |
538 | assert(link && (m->ifindex == 0 || m->ifindex == link->ifindex)); | |
539 | ||
540 | r = route_new(&tmp); | |
541 | if (r < 0) | |
542 | return r; | |
543 | ||
544 | route_copy(tmp, in, m); | |
545 | in = tmp; | |
546 | } | |
547 | ||
ad208fac | 548 | r = route_get(manager, link, in, &route); |
1c8e710c TG |
549 | if (r == -ENOENT) { |
550 | /* Route does not exist, create a new one */ | |
cc17f75f | 551 | r = route_add_internal(manager, link, link ? &link->routes : &manager->routes, in, &route); |
1c8e710c TG |
552 | if (r < 0) |
553 | return r; | |
554 | } else if (r == 0) { | |
555 | /* Take over a foreign route */ | |
ad208fac YW |
556 | if (link) { |
557 | r = set_ensure_put(&link->routes, &route_hash_ops, route); | |
558 | if (r < 0) | |
559 | return r; | |
1c8e710c | 560 | |
ad208fac YW |
561 | set_remove(link->routes_foreign, route); |
562 | } else { | |
563 | r = set_ensure_put(&manager->routes, &route_hash_ops, route); | |
564 | if (r < 0) | |
565 | return r; | |
566 | ||
567 | set_remove(manager->routes_foreign, route); | |
568 | } | |
1c8e710c TG |
569 | } else if (r == 1) { |
570 | /* Route exists, do nothing */ | |
571 | ; | |
572 | } else | |
573 | return r; | |
574 | ||
856e309d MC |
575 | if (ret) |
576 | *ret = route; | |
1c8e710c TG |
577 | |
578 | return 0; | |
579 | } | |
580 | ||
6c252588 YW |
581 | static bool route_type_is_reject(const Route *route) { |
582 | assert(route); | |
583 | ||
584 | return IN_SET(route->type, RTN_UNREACHABLE, RTN_PROHIBIT, RTN_BLACKHOLE, RTN_THROW); | |
585 | } | |
586 | ||
167a5561 YW |
587 | static void log_route_debug(const Route *route, const char *str, const Link *link) { |
588 | assert(route); | |
589 | assert(str); | |
590 | ||
591 | /* link may be NULL. */ | |
592 | ||
593 | if (DEBUG_LOGGING) { | |
594 | _cleanup_free_ char *dst = NULL, *dst_prefixlen = NULL, *src = NULL, *gw = NULL, *prefsrc = NULL; | |
595 | char scope[ROUTE_SCOPE_STR_MAX], table[ROUTE_TABLE_STR_MAX], protocol[ROUTE_PROTOCOL_STR_MAX]; | |
596 | ||
597 | if (!in_addr_is_null(route->family, &route->dst)) { | |
598 | (void) in_addr_to_string(route->family, &route->dst, &dst); | |
599 | (void) asprintf(&dst_prefixlen, "/%u", route->dst_prefixlen); | |
600 | } | |
601 | if (!in_addr_is_null(route->family, &route->src)) | |
602 | (void) in_addr_to_string(route->family, &route->src, &src); | |
603 | if (!in_addr_is_null(route->gw_family, &route->gw)) | |
604 | (void) in_addr_to_string(route->gw_family, &route->gw, &gw); | |
605 | if (!in_addr_is_null(route->family, &route->prefsrc)) | |
606 | (void) in_addr_to_string(route->family, &route->prefsrc, &prefsrc); | |
607 | ||
608 | log_link_debug(link, | |
609 | "%s route: dst: %s%s, src: %s, gw: %s, prefsrc: %s, scope: %s, table: %s, proto: %s, type: %s", | |
610 | str, strna(dst), strempty(dst_prefixlen), strna(src), strna(gw), strna(prefsrc), | |
611 | format_route_scope(route->scope, scope, sizeof(scope)), | |
612 | format_route_table(route->table, table, sizeof(table)), | |
613 | format_route_protocol(route->protocol, protocol, sizeof(protocol)), | |
614 | strna(route_type_to_string(route->type))); | |
615 | } | |
616 | } | |
617 | ||
5f4d7aa4 YW |
618 | static int route_set_netlink_message(const Route *route, sd_netlink_message *req, Link *link) { |
619 | unsigned flags; | |
620 | int r; | |
621 | ||
622 | assert(route); | |
623 | assert(req); | |
624 | ||
625 | /* link may be NULL */ | |
626 | ||
627 | if (in_addr_is_null(route->gw_family, &route->gw) == 0) { | |
628 | if (route->gw_family == route->family) { | |
629 | r = netlink_message_append_in_addr_union(req, RTA_GATEWAY, route->gw_family, &route->gw); | |
630 | if (r < 0) | |
631 | return log_link_error_errno(link, r, "Could not append RTA_GATEWAY attribute: %m"); | |
632 | } else { | |
633 | RouteVia rtvia = { | |
634 | .family = route->gw_family, | |
635 | .address = route->gw, | |
636 | }; | |
637 | ||
638 | r = sd_netlink_message_append_data(req, RTA_VIA, &rtvia, sizeof(rtvia)); | |
639 | if (r < 0) | |
640 | return log_link_error_errno(link, r, "Could not append RTA_VIA attribute: %m"); | |
641 | } | |
642 | } | |
643 | ||
644 | if (route->dst_prefixlen > 0) { | |
645 | r = netlink_message_append_in_addr_union(req, RTA_DST, route->family, &route->dst); | |
646 | if (r < 0) | |
647 | return log_link_error_errno(link, r, "Could not append RTA_DST attribute: %m"); | |
648 | ||
649 | r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen); | |
650 | if (r < 0) | |
651 | return log_link_error_errno(link, r, "Could not set destination prefix length: %m"); | |
652 | } | |
653 | ||
654 | if (route->src_prefixlen > 0) { | |
655 | r = netlink_message_append_in_addr_union(req, RTA_SRC, route->family, &route->src); | |
656 | if (r < 0) | |
657 | return log_link_error_errno(link, r, "Could not append RTA_SRC attribute: %m"); | |
658 | ||
659 | r = sd_rtnl_message_route_set_src_prefixlen(req, route->src_prefixlen); | |
660 | if (r < 0) | |
661 | return log_link_error_errno(link, r, "Could not set source prefix length: %m"); | |
662 | } | |
663 | ||
664 | if (in_addr_is_null(route->family, &route->prefsrc) == 0) { | |
665 | r = netlink_message_append_in_addr_union(req, RTA_PREFSRC, route->family, &route->prefsrc); | |
666 | if (r < 0) | |
667 | return log_link_error_errno(link, r, "Could not append RTA_PREFSRC attribute: %m"); | |
668 | } | |
669 | ||
670 | r = sd_rtnl_message_route_set_scope(req, route->scope); | |
671 | if (r < 0) | |
672 | return log_link_error_errno(link, r, "Could not set scope: %m"); | |
673 | ||
674 | flags = route->flags; | |
675 | if (route->gateway_onlink >= 0) | |
676 | SET_FLAG(flags, RTNH_F_ONLINK, route->gateway_onlink); | |
677 | ||
678 | r = sd_rtnl_message_route_set_flags(req, flags); | |
679 | if (r < 0) | |
680 | return log_link_error_errno(link, r, "Could not set flags: %m"); | |
681 | ||
682 | if (route->table != RT_TABLE_MAIN) { | |
683 | if (route->table < 256) { | |
684 | r = sd_rtnl_message_route_set_table(req, route->table); | |
685 | if (r < 0) | |
686 | return log_link_error_errno(link, r, "Could not set route table: %m"); | |
687 | } else { | |
688 | r = sd_rtnl_message_route_set_table(req, RT_TABLE_UNSPEC); | |
689 | if (r < 0) | |
690 | return log_link_error_errno(link, r, "Could not set route table: %m"); | |
691 | ||
692 | /* Table attribute to allow more than 256. */ | |
693 | r = sd_netlink_message_append_data(req, RTA_TABLE, &route->table, sizeof(route->table)); | |
694 | if (r < 0) | |
695 | return log_link_error_errno(link, r, "Could not append RTA_TABLE attribute: %m"); | |
696 | } | |
697 | } | |
698 | ||
699 | r = sd_rtnl_message_route_set_type(req, route->type); | |
700 | if (r < 0) | |
701 | return log_link_error_errno(link, r, "Could not set route type: %m"); | |
702 | ||
6c252588 | 703 | if (!route_type_is_reject(route)) { |
5f4d7aa4 YW |
704 | assert(link); /* Those routes must be attached to a specific link */ |
705 | ||
706 | r = sd_netlink_message_append_u32(req, RTA_OIF, link->ifindex); | |
707 | if (r < 0) | |
708 | return log_link_error_errno(link, r, "Could not append RTA_OIF attribute: %m"); | |
709 | } | |
710 | ||
711 | r = sd_netlink_message_append_u8(req, RTA_PREF, route->pref); | |
712 | if (r < 0) | |
713 | return log_link_error_errno(link, r, "Could not append RTA_PREF attribute: %m"); | |
714 | ||
715 | r = sd_netlink_message_append_u32(req, RTA_PRIORITY, route->priority); | |
716 | if (r < 0) | |
717 | return log_link_error_errno(link, r, "Could not append RTA_PRIORITY attribute: %m"); | |
718 | ||
719 | return 0; | |
720 | } | |
721 | ||
302a796f | 722 | static int route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4645ad47 YW |
723 | int r; |
724 | ||
725 | assert(m); | |
4645ad47 | 726 | |
ad208fac YW |
727 | /* Note that link may be NULL. */ |
728 | if (link && IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
4645ad47 YW |
729 | return 1; |
730 | ||
731 | r = sd_netlink_message_get_errno(m); | |
732 | if (r < 0 && r != -ESRCH) | |
5ecb131d | 733 | log_link_message_warning_errno(link, m, r, "Could not drop route, ignoring"); |
4645ad47 YW |
734 | |
735 | return 1; | |
736 | } | |
737 | ||
ad208fac | 738 | int route_remove( |
423c249c | 739 | const Route *route, |
ad208fac YW |
740 | Manager *manager, |
741 | Link *link, | |
742 | link_netlink_message_handler_t callback) { | |
27efb52b | 743 | |
4afd3348 | 744 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
5c1d3fc9 UTL |
745 | int r; |
746 | ||
ad208fac | 747 | assert(link || manager); |
4c701096 | 748 | assert(IN_SET(route->family, AF_INET, AF_INET6)); |
5c1d3fc9 | 749 | |
ad208fac YW |
750 | if (!manager) |
751 | manager = link->manager; | |
081b3009 | 752 | /* link may be NULL! */ |
ad208fac | 753 | |
167a5561 YW |
754 | log_route_debug(route, "Removing", link); |
755 | ||
ad208fac | 756 | r = sd_rtnl_message_new_route(manager->rtnl, &req, |
28cc555d DW |
757 | RTM_DELROUTE, route->family, |
758 | route->protocol); | |
f647962d | 759 | if (r < 0) |
7750b796 | 760 | return log_link_error_errno(link, r, "Could not create RTM_DELROUTE message: %m"); |
5c1d3fc9 | 761 | |
5f4d7aa4 | 762 | r = route_set_netlink_message(route, req, link); |
f647962d | 763 | if (r < 0) |
5f4d7aa4 | 764 | return r; |
5c1d3fc9 | 765 | |
bac319a7 | 766 | r = netlink_call_async(manager->rtnl, NULL, req, |
302a796f YW |
767 | callback ?: route_remove_handler, |
768 | link_netlink_destroy_callback, link); | |
f647962d | 769 | if (r < 0) |
7750b796 | 770 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); |
5c1d3fc9 | 771 | |
081b3009 | 772 | link_ref(link); /* link may be NULL, link_ref() is OK with that */ |
563c69c6 | 773 | |
5c1d3fc9 UTL |
774 | return 0; |
775 | } | |
776 | ||
1132a714 | 777 | static bool link_has_route(const Link *link, const Route *route) { |
779804dd YW |
778 | Route *net_route; |
779 | ||
780 | assert(link); | |
781 | assert(route); | |
782 | ||
783 | if (!link->network) | |
784 | return false; | |
785 | ||
2a54a044 | 786 | HASHMAP_FOREACH(net_route, link->network->routes_by_section) |
779804dd YW |
787 | if (route_equal(net_route, route)) |
788 | return true; | |
789 | ||
790 | return false; | |
791 | } | |
792 | ||
4055ec93 | 793 | static bool links_have_route(const Manager *manager, const Route *route, const Link *except) { |
1132a714 YW |
794 | Link *link; |
795 | ||
796 | assert(manager); | |
797 | ||
798 | HASHMAP_FOREACH(link, manager->links) { | |
799 | if (link == except) | |
800 | continue; | |
801 | ||
802 | if (link_has_route(link, route)) | |
803 | return true; | |
804 | } | |
805 | ||
806 | return false; | |
807 | } | |
808 | ||
4055ec93 | 809 | static int manager_drop_routes_internal(Manager *manager, bool foreign, const Link *except) { |
1132a714 YW |
810 | Route *route; |
811 | int k, r = 0; | |
4055ec93 | 812 | Set *routes; |
1132a714 YW |
813 | |
814 | assert(manager); | |
815 | ||
4055ec93 YW |
816 | routes = foreign ? manager->routes_foreign : manager->routes; |
817 | SET_FOREACH(route, routes) { | |
818 | /* Do not touch routes managed by the kernel */ | |
1132a714 YW |
819 | if (route->protocol == RTPROT_KERNEL) |
820 | continue; | |
821 | ||
4055ec93 YW |
822 | /* The route will be configured later, or already configured by a link */ |
823 | if (links_have_route(manager, route, except)) | |
1132a714 YW |
824 | continue; |
825 | ||
826 | /* The existing links do not have the route. Let's drop this now. It may by | |
827 | * re-configured later. */ | |
828 | k = route_remove(route, manager, NULL, NULL); | |
829 | if (k < 0 && r >= 0) | |
830 | r = k; | |
831 | } | |
832 | ||
833 | return r; | |
834 | } | |
835 | ||
4055ec93 YW |
836 | static int manager_drop_foreign_routes(Manager *manager) { |
837 | return manager_drop_routes_internal(manager, true, NULL); | |
838 | } | |
1132a714 | 839 | |
4055ec93 YW |
840 | static int manager_drop_routes(Manager *manager, const Link *except) { |
841 | return manager_drop_routes_internal(manager, false, except); | |
1132a714 YW |
842 | } |
843 | ||
779804dd YW |
844 | int link_drop_foreign_routes(Link *link) { |
845 | Route *route; | |
846 | int k, r = 0; | |
847 | ||
848 | assert(link); | |
1132a714 | 849 | assert(link->manager); |
779804dd YW |
850 | |
851 | SET_FOREACH(route, link->routes_foreign) { | |
852 | /* do not touch routes managed by the kernel */ | |
853 | if (route->protocol == RTPROT_KERNEL) | |
854 | continue; | |
855 | ||
856 | /* do not touch multicast route added by kernel */ | |
857 | /* FIXME: Why the kernel adds this route with protocol RTPROT_BOOT??? We need to investigate that. | |
858 | * https://tools.ietf.org/html/rfc4862#section-5.4 may explain why. */ | |
859 | if (route->protocol == RTPROT_BOOT && | |
860 | route->family == AF_INET6 && | |
861 | route->dst_prefixlen == 8 && | |
862 | 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 }}} })) | |
863 | continue; | |
864 | ||
865 | if (route->protocol == RTPROT_STATIC && link->network && | |
866 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_STATIC)) | |
867 | continue; | |
868 | ||
869 | if (route->protocol == RTPROT_DHCP && link->network && | |
870 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP)) | |
871 | continue; | |
872 | ||
1132a714 | 873 | if (link_has_route(link, route)) |
f9bb3338 | 874 | k = route_add(NULL, link, route, NULL, NULL); |
779804dd | 875 | else |
ad208fac | 876 | k = route_remove(route, NULL, link, NULL); |
779804dd YW |
877 | if (k < 0 && r >= 0) |
878 | r = k; | |
879 | } | |
880 | ||
1132a714 YW |
881 | k = manager_drop_foreign_routes(link->manager); |
882 | if (k < 0 && r >= 0) | |
883 | r = k; | |
884 | ||
779804dd YW |
885 | return r; |
886 | } | |
887 | ||
62f0ea5f YW |
888 | int link_drop_routes(Link *link) { |
889 | Route *route; | |
890 | int k, r = 0; | |
891 | ||
892 | assert(link); | |
893 | ||
894 | SET_FOREACH(route, link->routes) { | |
895 | /* do not touch routes managed by the kernel */ | |
896 | if (route->protocol == RTPROT_KERNEL) | |
897 | continue; | |
898 | ||
ad208fac | 899 | k = route_remove(route, NULL, link, NULL); |
62f0ea5f YW |
900 | if (k < 0 && r >= 0) |
901 | r = k; | |
902 | } | |
903 | ||
1132a714 YW |
904 | k = manager_drop_routes(link->manager, link); |
905 | if (k < 0 && r >= 0) | |
906 | r = k; | |
907 | ||
62f0ea5f YW |
908 | return r; |
909 | } | |
910 | ||
74154c2e | 911 | static int route_expire_handler(sd_event_source *s, uint64_t usec, void *userdata) { |
f833694d TG |
912 | Route *route = userdata; |
913 | int r; | |
914 | ||
915 | assert(route); | |
916 | ||
ad208fac | 917 | r = route_remove(route, route->manager, route->link, NULL); |
d6ad41e2 | 918 | if (r < 0) { |
98b02994 | 919 | log_link_warning_errno(route->link, r, "Could not remove route: %m"); |
fe7ca21a | 920 | route_free(route); |
d6ad41e2 | 921 | } |
f833694d TG |
922 | |
923 | return 1; | |
924 | } | |
925 | ||
f9bb3338 YW |
926 | static int route_add_and_setup_timer(Link *link, const Route *route, const MultipathRoute *m, Route **ret) { |
927 | _cleanup_(sd_event_source_unrefp) sd_event_source *expire = NULL; | |
928 | Route *nr; | |
929 | int r; | |
930 | ||
931 | assert(link); | |
932 | assert(route); | |
933 | ||
6c252588 | 934 | if (route_type_is_reject(route)) |
f9bb3338 YW |
935 | r = route_add(link->manager, NULL, route, NULL, &nr); |
936 | else if (!m || m->ifindex == 0 || m->ifindex == link->ifindex) | |
937 | r = route_add(NULL, link, route, m, &nr); | |
938 | else { | |
939 | Link *link_gw; | |
940 | ||
941 | r = link_get(link->manager, m->ifindex, &link_gw); | |
942 | if (r < 0) | |
943 | return log_link_error_errno(link, r, "Failed to get link with ifindex %d: %m", m->ifindex); | |
944 | ||
945 | r = route_add(NULL, link_gw, route, m, &nr); | |
946 | } | |
947 | if (r < 0) | |
948 | return log_link_error_errno(link, r, "Could not add route: %m"); | |
949 | ||
950 | /* TODO: drop expiration handling once it can be pushed into the kernel */ | |
951 | if (nr->lifetime != USEC_INFINITY && !kernel_route_expiration_supported()) { | |
952 | r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), | |
953 | nr->lifetime, 0, route_expire_handler, nr); | |
954 | if (r < 0) | |
955 | return log_link_error_errno(link, r, "Could not arm expiration timer: %m"); | |
956 | } | |
957 | ||
958 | sd_event_source_unref(nr->expire); | |
959 | nr->expire = TAKE_PTR(expire); | |
960 | ||
961 | if (ret) | |
962 | *ret = nr; | |
963 | ||
964 | return 0; | |
965 | } | |
966 | ||
423c249c | 967 | static int append_nexthop_one(const Route *route, const MultipathRoute *m, struct rtattr **rta, size_t offset) { |
6ff5cc6b YW |
968 | struct rtnexthop *rtnh; |
969 | struct rtattr *new_rta; | |
970 | int r; | |
971 | ||
972 | assert(route); | |
973 | assert(m); | |
974 | assert(rta); | |
975 | assert(*rta); | |
976 | ||
977 | new_rta = realloc(*rta, RTA_ALIGN((*rta)->rta_len) + RTA_SPACE(sizeof(struct rtnexthop))); | |
978 | if (!new_rta) | |
979 | return -ENOMEM; | |
980 | *rta = new_rta; | |
981 | ||
982 | rtnh = (struct rtnexthop *)((uint8_t *) *rta + offset); | |
983 | *rtnh = (struct rtnexthop) { | |
984 | .rtnh_len = sizeof(*rtnh), | |
985 | .rtnh_ifindex = m->ifindex, | |
986 | .rtnh_hops = m->weight > 0 ? m->weight - 1 : 0, | |
987 | }; | |
988 | ||
989 | (*rta)->rta_len += sizeof(struct rtnexthop); | |
990 | ||
991 | if (route->family == m->gateway.family) { | |
992 | r = rtattr_append_attribute(rta, RTA_GATEWAY, &m->gateway.address, FAMILY_ADDRESS_SIZE(m->gateway.family)); | |
993 | if (r < 0) | |
994 | goto clear; | |
995 | rtnh = (struct rtnexthop *)((uint8_t *) *rta + offset); | |
996 | rtnh->rtnh_len += RTA_SPACE(FAMILY_ADDRESS_SIZE(m->gateway.family)); | |
997 | } else { | |
998 | r = rtattr_append_attribute(rta, RTA_VIA, &m->gateway, FAMILY_ADDRESS_SIZE(m->gateway.family) + sizeof(m->gateway.family)); | |
999 | if (r < 0) | |
1000 | goto clear; | |
1001 | rtnh = (struct rtnexthop *)((uint8_t *) *rta + offset); | |
1002 | rtnh->rtnh_len += RTA_SPACE(FAMILY_ADDRESS_SIZE(m->gateway.family) + sizeof(m->gateway.family)); | |
1003 | } | |
1004 | ||
1005 | return 0; | |
1006 | ||
1007 | clear: | |
1008 | (*rta)->rta_len -= sizeof(struct rtnexthop); | |
1009 | return r; | |
1010 | } | |
1011 | ||
423c249c | 1012 | static int append_nexthops(const Route *route, sd_netlink_message *req) { |
6ff5cc6b YW |
1013 | _cleanup_free_ struct rtattr *rta = NULL; |
1014 | struct rtnexthop *rtnh; | |
1015 | MultipathRoute *m; | |
1016 | size_t offset; | |
6ff5cc6b YW |
1017 | int r; |
1018 | ||
1019 | if (ordered_set_isempty(route->multipath_routes)) | |
1020 | return 0; | |
1021 | ||
1022 | rta = new(struct rtattr, 1); | |
1023 | if (!rta) | |
1024 | return -ENOMEM; | |
1025 | ||
1026 | *rta = (struct rtattr) { | |
1027 | .rta_type = RTA_MULTIPATH, | |
1028 | .rta_len = RTA_LENGTH(0), | |
1029 | }; | |
1030 | offset = (uint8_t *) RTA_DATA(rta) - (uint8_t *) rta; | |
1031 | ||
90e74a66 | 1032 | ORDERED_SET_FOREACH(m, route->multipath_routes) { |
6ff5cc6b YW |
1033 | r = append_nexthop_one(route, m, &rta, offset); |
1034 | if (r < 0) | |
1035 | return r; | |
1036 | ||
1037 | rtnh = (struct rtnexthop *)((uint8_t *) rta + offset); | |
1038 | offset = (uint8_t *) RTNH_NEXT(rtnh) - (uint8_t *) rta; | |
1039 | } | |
1040 | ||
1041 | r = sd_netlink_message_append_data(req, RTA_MULTIPATH, RTA_DATA(rta), RTA_PAYLOAD(rta)); | |
1042 | if (r < 0) | |
1043 | return r; | |
1044 | ||
1045 | return 0; | |
1046 | } | |
1047 | ||
1b566071 | 1048 | int route_configure( |
423c249c | 1049 | const Route *route, |
1b566071 | 1050 | Link *link, |
80b0e860 YW |
1051 | link_netlink_message_handler_t callback, |
1052 | Route **ret) { | |
1b566071 | 1053 | |
4afd3348 | 1054 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
f579559b TG |
1055 | int r; |
1056 | ||
f579559b | 1057 | assert(link); |
f882c247 TG |
1058 | assert(link->manager); |
1059 | assert(link->manager->rtnl); | |
f579559b | 1060 | assert(link->ifindex > 0); |
4c701096 | 1061 | assert(IN_SET(route->family, AF_INET, AF_INET6)); |
bd1175bc | 1062 | assert(callback); |
f579559b | 1063 | |
ad208fac | 1064 | if (route_get(link->manager, link, route, NULL) <= 0 && |
47d2d30d | 1065 | set_size(link->routes) >= routes_max()) |
7750b796 YW |
1066 | return log_link_error_errno(link, SYNTHETIC_ERRNO(E2BIG), |
1067 | "Too many routes are configured, refusing: %m"); | |
1b566071 | 1068 | |
167a5561 | 1069 | log_route_debug(route, "Configuring", link); |
156ed65e | 1070 | |
151b9b96 | 1071 | r = sd_rtnl_message_new_route(link->manager->rtnl, &req, |
28cc555d DW |
1072 | RTM_NEWROUTE, route->family, |
1073 | route->protocol); | |
f647962d | 1074 | if (r < 0) |
7750b796 | 1075 | return log_link_error_errno(link, r, "Could not create RTM_NEWROUTE message: %m"); |
f579559b | 1076 | |
5f4d7aa4 | 1077 | r = route_set_netlink_message(route, req, link); |
f647962d | 1078 | if (r < 0) |
5f4d7aa4 | 1079 | return r; |
3b015d40 | 1080 | |
f02ba163 DD |
1081 | if (route->lifetime != USEC_INFINITY && kernel_route_expiration_supported()) { |
1082 | r = sd_netlink_message_append_u32(req, RTA_EXPIRES, | |
1083 | DIV_ROUND_UP(usec_sub_unsigned(route->lifetime, now(clock_boottime_or_monotonic())), USEC_PER_SEC)); | |
1084 | if (r < 0) | |
7750b796 | 1085 | return log_link_error_errno(link, r, "Could not append RTA_EXPIRES attribute: %m"); |
f02ba163 DD |
1086 | } |
1087 | ||
9b88f20a SS |
1088 | if (route->ttl_propagate >= 0) { |
1089 | r = sd_netlink_message_append_u8(req, RTA_TTL_PROPAGATE, route->ttl_propagate); | |
1090 | if (r < 0) | |
1091 | return log_link_error_errno(link, r, "Could not append RTA_TTL_PROPAGATE attribute: %m"); | |
1092 | } | |
1093 | ||
d6fceaf1 SS |
1094 | r = sd_netlink_message_open_container(req, RTA_METRICS); |
1095 | if (r < 0) | |
7750b796 | 1096 | return log_link_error_errno(link, r, "Could not append RTA_METRICS attribute: %m"); |
d6fceaf1 SS |
1097 | |
1098 | if (route->mtu > 0) { | |
1099 | r = sd_netlink_message_append_u32(req, RTAX_MTU, route->mtu); | |
1100 | if (r < 0) | |
7750b796 | 1101 | return log_link_error_errno(link, r, "Could not append RTAX_MTU attribute: %m"); |
d6fceaf1 SS |
1102 | } |
1103 | ||
6b21ad33 | 1104 | if (route->initcwnd > 0) { |
323d9329 SS |
1105 | r = sd_netlink_message_append_u32(req, RTAX_INITCWND, route->initcwnd); |
1106 | if (r < 0) | |
7750b796 | 1107 | return log_link_error_errno(link, r, "Could not append RTAX_INITCWND attribute: %m"); |
323d9329 SS |
1108 | } |
1109 | ||
6b21ad33 | 1110 | if (route->initrwnd > 0) { |
323d9329 SS |
1111 | r = sd_netlink_message_append_u32(req, RTAX_INITRWND, route->initrwnd); |
1112 | if (r < 0) | |
7750b796 | 1113 | return log_link_error_errno(link, r, "Could not append RTAX_INITRWND attribute: %m"); |
323d9329 SS |
1114 | } |
1115 | ||
67c193bf | 1116 | if (route->quickack >= 0) { |
09f5dfad SS |
1117 | r = sd_netlink_message_append_u32(req, RTAX_QUICKACK, route->quickack); |
1118 | if (r < 0) | |
7750b796 | 1119 | return log_link_error_errno(link, r, "Could not append RTAX_QUICKACK attribute: %m"); |
09f5dfad SS |
1120 | } |
1121 | ||
633c7258 SS |
1122 | if (route->fast_open_no_cookie >= 0) { |
1123 | r = sd_netlink_message_append_u32(req, RTAX_FASTOPEN_NO_COOKIE, route->fast_open_no_cookie); | |
1124 | if (r < 0) | |
1125 | return log_link_error_errno(link, r, "Could not append RTAX_FASTOPEN_NO_COOKIE attribute: %m"); | |
1126 | } | |
1127 | ||
007cac09 SS |
1128 | if (route->advmss > 0) { |
1129 | r = sd_netlink_message_append_u32(req, RTAX_ADVMSS, route->advmss); | |
1130 | if (r < 0) | |
1131 | return log_link_error_errno(link, r, "Could not append RTAX_ADVMSS attribute: %m"); | |
1132 | } | |
1133 | ||
d6fceaf1 SS |
1134 | r = sd_netlink_message_close_container(req); |
1135 | if (r < 0) | |
7750b796 | 1136 | return log_link_error_errno(link, r, "Could not append RTA_METRICS attribute: %m"); |
d6fceaf1 | 1137 | |
6ff5cc6b YW |
1138 | r = append_nexthops(route, req); |
1139 | if (r < 0) | |
1140 | return log_link_error_errno(link, r, "Could not append RTA_MULTIPATH attribute: %m"); | |
1141 | ||
f9bb3338 YW |
1142 | if (ordered_set_isempty(route->multipath_routes)) { |
1143 | Route *nr; | |
1c8e710c | 1144 | |
f9bb3338 | 1145 | r = route_add_and_setup_timer(link, route, NULL, &nr); |
f833694d | 1146 | if (r < 0) |
f9bb3338 | 1147 | return r; |
f833694d | 1148 | |
f9bb3338 YW |
1149 | if (ret) |
1150 | *ret = nr; | |
1151 | } else { | |
1152 | MultipathRoute *m; | |
f833694d | 1153 | |
f9bb3338 YW |
1154 | assert(!ret); |
1155 | ||
1156 | ORDERED_SET_FOREACH(m, route->multipath_routes) { | |
1157 | r = route_add_and_setup_timer(link, route, m, NULL); | |
1158 | if (r < 0) | |
1159 | return r; | |
1160 | } | |
1161 | } | |
80b0e860 | 1162 | |
0c54bfd6 YW |
1163 | r = netlink_call_async(link->manager->rtnl, NULL, req, callback, |
1164 | link_netlink_destroy_callback, link); | |
1165 | if (r < 0) | |
1166 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1167 | ||
1168 | link_ref(link); | |
1169 | ||
8c212f76 | 1170 | return 0; |
f579559b TG |
1171 | } |
1172 | ||
141318f7 YW |
1173 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1174 | int r; | |
1175 | ||
1176 | assert(link); | |
1177 | assert(link->route_messages > 0); | |
141318f7 YW |
1178 | |
1179 | link->route_messages--; | |
1180 | ||
1181 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1182 | return 1; | |
1183 | ||
1184 | r = sd_netlink_message_get_errno(m); | |
1185 | if (r < 0 && r != -EEXIST) { | |
1186 | log_link_message_warning_errno(link, m, r, "Could not set route"); | |
1187 | link_enter_failed(link); | |
1188 | return 1; | |
1189 | } | |
1190 | ||
1191 | if (link->route_messages == 0) { | |
1192 | log_link_debug(link, "Routes set"); | |
1193 | link->static_routes_configured = true; | |
1194 | link_set_nexthop(link); | |
1195 | } | |
1196 | ||
1197 | return 1; | |
1198 | } | |
1199 | ||
1200 | int link_set_routes(Link *link) { | |
1201 | enum { | |
1202 | PHASE_NON_GATEWAY, /* First phase: Routes without a gateway */ | |
1203 | PHASE_GATEWAY, /* Second phase: Routes with a gateway */ | |
1204 | _PHASE_MAX | |
1205 | } phase; | |
1206 | Route *rt; | |
1207 | int r; | |
1208 | ||
1209 | assert(link); | |
1210 | assert(link->network); | |
1211 | assert(link->state != _LINK_STATE_INVALID); | |
1212 | ||
1213 | link->static_routes_configured = false; | |
1214 | ||
1215 | if (!link->addresses_ready) | |
1216 | return 0; | |
1217 | ||
1218 | if (!link_has_carrier(link) && !link->network->configure_without_carrier) | |
1219 | /* During configuring addresses, the link lost its carrier. As networkd is dropping | |
1220 | * the addresses now, let's not configure the routes either. */ | |
1221 | return 0; | |
1222 | ||
bd4733da YW |
1223 | if (link->route_messages != 0) { |
1224 | log_link_debug(link, "Static routes are configuring."); | |
1225 | return 0; | |
1226 | } | |
1227 | ||
141318f7 YW |
1228 | r = link_set_routing_policy_rules(link); |
1229 | if (r < 0) | |
1230 | return r; | |
1231 | ||
1232 | /* First add the routes that enable us to talk to gateways, then add in the others that need a gateway. */ | |
1233 | for (phase = 0; phase < _PHASE_MAX; phase++) | |
2a54a044 | 1234 | HASHMAP_FOREACH(rt, link->network->routes_by_section) { |
1a3a6309 | 1235 | if (rt->gateway_from_dhcp_or_ra) |
141318f7 YW |
1236 | continue; |
1237 | ||
6dd53981 | 1238 | if ((in_addr_is_null(rt->gw_family, &rt->gw) && ordered_set_isempty(rt->multipath_routes)) != (phase == PHASE_NON_GATEWAY)) |
141318f7 YW |
1239 | continue; |
1240 | ||
1241 | r = route_configure(rt, link, route_handler, NULL); | |
1242 | if (r < 0) | |
1243 | return log_link_warning_errno(link, r, "Could not set routes: %m"); | |
8c212f76 YW |
1244 | |
1245 | link->route_messages++; | |
141318f7 YW |
1246 | } |
1247 | ||
1248 | if (link->route_messages == 0) { | |
1249 | link->static_routes_configured = true; | |
1250 | link_set_nexthop(link); | |
1251 | } else { | |
1252 | log_link_debug(link, "Setting routes"); | |
1253 | link_set_state(link, LINK_STATE_CONFIGURING); | |
1254 | } | |
1255 | ||
1256 | return 0; | |
1257 | } | |
1258 | ||
f9bb3338 YW |
1259 | static int process_route_one(Manager *manager, Link *link, uint16_t type, const Route *tmp, const MultipathRoute *m) { |
1260 | _cleanup_(route_freep) Route *nr = NULL; | |
1261 | Route *route = NULL; | |
1262 | int r; | |
1263 | ||
1264 | assert(manager); | |
1265 | assert(tmp); | |
1266 | assert(IN_SET(type, RTM_NEWROUTE, RTM_DELROUTE)); | |
1267 | ||
1268 | if (m) { | |
1269 | if (link) | |
1270 | return log_link_warning_errno(link, SYNTHETIC_ERRNO(EINVAL), | |
1271 | "rtnl: received route contains both RTA_OIF and RTA_MULTIPATH, ignoring."); | |
1272 | ||
1273 | if (m->ifindex <= 0) | |
1274 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
1275 | "rtnl: received multipath route with invalid ifindex, ignoring."); | |
1276 | ||
1277 | r = link_get(manager, m->ifindex, &link); | |
1278 | if (r < 0) { | |
1279 | log_warning_errno(r, "rtnl: received multipath route for link (%d) we do not know, ignoring: %m", m->ifindex); | |
1280 | return 0; | |
1281 | } | |
1282 | ||
1283 | r = route_new(&nr); | |
1284 | if (r < 0) | |
1285 | return log_oom(); | |
1286 | ||
1287 | route_copy(nr, tmp, m); | |
1288 | ||
1289 | tmp = nr; | |
1290 | } | |
1291 | ||
1292 | (void) route_get(manager, link, tmp, &route); | |
1293 | ||
f9bb3338 YW |
1294 | switch (type) { |
1295 | case RTM_NEWROUTE: | |
167a5561 YW |
1296 | if (!route) { |
1297 | if (!manager->manage_foreign_routes) | |
1298 | log_route_debug(tmp, "Ignoring received foreign", link); | |
1299 | else { | |
1300 | /* A route appeared that we did not request */ | |
1301 | log_route_debug(tmp, "Remembering foreign", link); | |
1302 | r = route_add_foreign(manager, link, tmp, NULL); | |
1303 | if (r < 0) { | |
1304 | log_link_warning_errno(link, r, "Failed to remember foreign route, ignoring: %m"); | |
1305 | return 0; | |
1306 | } | |
f9bb3338 | 1307 | } |
167a5561 YW |
1308 | } else |
1309 | log_route_debug(tmp, "Received remembered", link); | |
f9bb3338 YW |
1310 | |
1311 | break; | |
1312 | ||
1313 | case RTM_DELROUTE: | |
167a5561 YW |
1314 | log_route_debug(tmp, |
1315 | route ? "Forgetting" : | |
1316 | manager->manage_foreign_routes ? "Kernel removed unknown" : "Ignoring received foreign", link); | |
f9bb3338 YW |
1317 | route_free(route); |
1318 | break; | |
1319 | ||
1320 | default: | |
1321 | assert_not_reached("Received route message with invalid RTNL message type"); | |
1322 | } | |
1323 | ||
1324 | return 1; | |
1325 | } | |
1326 | ||
4468f01b | 1327 | int manager_rtnl_process_route(sd_netlink *rtnl, sd_netlink_message *message, Manager *m) { |
f9bb3338 | 1328 | _cleanup_ordered_set_free_free_ OrderedSet *multipath_routes = NULL; |
4468f01b | 1329 | _cleanup_(route_freep) Route *tmp = NULL; |
f9bb3338 | 1330 | _cleanup_free_ void *rta_multipath = NULL; |
4468f01b YW |
1331 | Link *link = NULL; |
1332 | uint32_t ifindex; | |
1333 | uint16_t type; | |
1334 | unsigned char table; | |
f9bb3338 | 1335 | size_t rta_len; |
4468f01b YW |
1336 | int r; |
1337 | ||
1338 | assert(rtnl); | |
1339 | assert(message); | |
1340 | assert(m); | |
1341 | ||
1342 | if (sd_netlink_message_is_error(message)) { | |
1343 | r = sd_netlink_message_get_errno(message); | |
1344 | if (r < 0) | |
1345 | log_message_warning_errno(message, r, "rtnl: failed to receive route message, ignoring"); | |
1346 | ||
1347 | return 0; | |
1348 | } | |
1349 | ||
1350 | r = sd_netlink_message_get_type(message, &type); | |
1351 | if (r < 0) { | |
1352 | log_warning_errno(r, "rtnl: could not get message type, ignoring: %m"); | |
1353 | return 0; | |
1354 | } else if (!IN_SET(type, RTM_NEWROUTE, RTM_DELROUTE)) { | |
1355 | log_warning("rtnl: received unexpected message type %u when processing route, ignoring.", type); | |
1356 | return 0; | |
1357 | } | |
1358 | ||
1359 | r = sd_netlink_message_read_u32(message, RTA_OIF, &ifindex); | |
ad208fac | 1360 | if (r < 0 && r != -ENODATA) { |
4468f01b YW |
1361 | log_warning_errno(r, "rtnl: could not get ifindex from route message, ignoring: %m"); |
1362 | return 0; | |
ad208fac YW |
1363 | } else if (r >= 0) { |
1364 | if (ifindex <= 0) { | |
1365 | log_warning("rtnl: received route message with invalid ifindex %d, ignoring.", ifindex); | |
1366 | return 0; | |
1367 | } | |
4468f01b | 1368 | |
ad208fac YW |
1369 | r = link_get(m, ifindex, &link); |
1370 | if (r < 0 || !link) { | |
1371 | /* when enumerating we might be out of sync, but we will | |
1372 | * get the route again, so just ignore it */ | |
1373 | if (!m->enumerating) | |
1374 | log_warning("rtnl: received route message for link (%d) we do not know about, ignoring", ifindex); | |
1375 | return 0; | |
1376 | } | |
4468f01b YW |
1377 | } |
1378 | ||
1379 | r = route_new(&tmp); | |
1380 | if (r < 0) | |
1381 | return log_oom(); | |
1382 | ||
1383 | r = sd_rtnl_message_route_get_family(message, &tmp->family); | |
1384 | if (r < 0) { | |
1385 | log_link_warning(link, "rtnl: received route message without family, ignoring"); | |
1386 | return 0; | |
1387 | } else if (!IN_SET(tmp->family, AF_INET, AF_INET6)) { | |
1388 | log_link_debug(link, "rtnl: received route message with invalid family '%i', ignoring", tmp->family); | |
1389 | return 0; | |
1390 | } | |
1391 | ||
1392 | r = sd_rtnl_message_route_get_protocol(message, &tmp->protocol); | |
1393 | if (r < 0) { | |
1394 | log_warning_errno(r, "rtnl: received route message without route protocol: %m"); | |
1395 | return 0; | |
1396 | } | |
1397 | ||
ad6df717 YW |
1398 | r = netlink_message_read_in_addr_union(message, RTA_DST, tmp->family, &tmp->dst); |
1399 | if (r < 0 && r != -ENODATA) { | |
1400 | log_link_warning_errno(link, r, "rtnl: received route message without valid destination, ignoring: %m"); | |
1401 | return 0; | |
1402 | } | |
4468f01b | 1403 | |
ad6df717 YW |
1404 | r = netlink_message_read_in_addr_union(message, RTA_GATEWAY, tmp->family, &tmp->gw); |
1405 | if (r < 0 && r != -ENODATA) { | |
1406 | log_link_warning_errno(link, r, "rtnl: received route message without valid gateway, ignoring: %m"); | |
1407 | return 0; | |
1408 | } else if (r >= 0) | |
1409 | tmp->gw_family = tmp->family; | |
1410 | else if (tmp->family == AF_INET) { | |
1411 | RouteVia via; | |
6dd53981 YW |
1412 | |
1413 | r = sd_netlink_message_read(message, RTA_VIA, sizeof(via), &via); | |
1414 | if (r < 0 && r != -ENODATA) { | |
1415 | log_link_warning_errno(link, r, "rtnl: received route message without valid gateway, ignoring: %m"); | |
1416 | return 0; | |
1417 | } else if (r >= 0) { | |
1418 | tmp->gw_family = via.family; | |
1419 | tmp->gw = via.address; | |
4468f01b | 1420 | } |
ad6df717 | 1421 | } |
4468f01b | 1422 | |
ad6df717 YW |
1423 | r = netlink_message_read_in_addr_union(message, RTA_SRC, tmp->family, &tmp->src); |
1424 | if (r < 0 && r != -ENODATA) { | |
1425 | log_link_warning_errno(link, r, "rtnl: received route message without valid source, ignoring: %m"); | |
1426 | return 0; | |
1427 | } | |
4468f01b | 1428 | |
ad6df717 YW |
1429 | r = netlink_message_read_in_addr_union(message, RTA_PREFSRC, tmp->family, &tmp->prefsrc); |
1430 | if (r < 0 && r != -ENODATA) { | |
1431 | log_link_warning_errno(link, r, "rtnl: received route message without valid preferred source, ignoring: %m"); | |
4468f01b YW |
1432 | return 0; |
1433 | } | |
1434 | ||
1435 | r = sd_rtnl_message_route_get_dst_prefixlen(message, &tmp->dst_prefixlen); | |
1436 | if (r < 0) { | |
1437 | log_link_warning_errno(link, r, "rtnl: received route message with invalid destination prefixlen, ignoring: %m"); | |
1438 | return 0; | |
1439 | } | |
1440 | ||
1441 | r = sd_rtnl_message_route_get_src_prefixlen(message, &tmp->src_prefixlen); | |
1442 | if (r < 0) { | |
1443 | log_link_warning_errno(link, r, "rtnl: received route message with invalid source prefixlen, ignoring: %m"); | |
1444 | return 0; | |
1445 | } | |
1446 | ||
1447 | r = sd_rtnl_message_route_get_scope(message, &tmp->scope); | |
1448 | if (r < 0) { | |
1449 | log_link_warning_errno(link, r, "rtnl: received route message with invalid scope, ignoring: %m"); | |
1450 | return 0; | |
1451 | } | |
1452 | ||
1453 | r = sd_rtnl_message_route_get_tos(message, &tmp->tos); | |
1454 | if (r < 0) { | |
1455 | log_link_warning_errno(link, r, "rtnl: received route message with invalid tos, ignoring: %m"); | |
1456 | return 0; | |
1457 | } | |
1458 | ||
1459 | r = sd_rtnl_message_route_get_type(message, &tmp->type); | |
1460 | if (r < 0) { | |
1461 | log_link_warning_errno(link, r, "rtnl: received route message with invalid type, ignoring: %m"); | |
1462 | return 0; | |
1463 | } | |
1464 | ||
1465 | r = sd_rtnl_message_route_get_table(message, &table); | |
1466 | if (r < 0) { | |
1467 | log_link_warning_errno(link, r, "rtnl: received route message with invalid table, ignoring: %m"); | |
1468 | return 0; | |
1469 | } | |
1470 | tmp->table = table; | |
1471 | ||
1472 | r = sd_netlink_message_read_u32(message, RTA_PRIORITY, &tmp->priority); | |
1473 | if (r < 0 && r != -ENODATA) { | |
1474 | log_link_warning_errno(link, r, "rtnl: received route message with invalid priority, ignoring: %m"); | |
1475 | return 0; | |
1476 | } | |
1477 | ||
1478 | r = sd_netlink_message_enter_container(message, RTA_METRICS); | |
1479 | if (r < 0 && r != -ENODATA) { | |
1480 | log_link_error_errno(link, r, "rtnl: Could not enter RTA_METRICS container: %m"); | |
1481 | return 0; | |
1482 | } | |
1483 | if (r >= 0) { | |
1484 | r = sd_netlink_message_read_u32(message, RTAX_INITCWND, &tmp->initcwnd); | |
1485 | if (r < 0 && r != -ENODATA) { | |
1486 | log_link_warning_errno(link, r, "rtnl: received route message with invalid initcwnd, ignoring: %m"); | |
1487 | return 0; | |
1488 | } | |
1489 | ||
1490 | r = sd_netlink_message_read_u32(message, RTAX_INITRWND, &tmp->initrwnd); | |
1491 | if (r < 0 && r != -ENODATA) { | |
1492 | log_link_warning_errno(link, r, "rtnl: received route message with invalid initrwnd, ignoring: %m"); | |
1493 | return 0; | |
386e8908 YW |
1494 | } |
1495 | ||
1496 | r = sd_netlink_message_read_u32(message, RTAX_ADVMSS, &tmp->advmss); | |
1497 | if (r < 0 && r != -ENODATA) { | |
1498 | log_link_warning_errno(link, r, "rtnl: received route message with invalid advmss, ignoring: %m"); | |
1499 | return 0; | |
4468f01b YW |
1500 | } |
1501 | ||
1502 | r = sd_netlink_message_exit_container(message); | |
1503 | if (r < 0) { | |
1504 | log_link_error_errno(link, r, "rtnl: Could not exit from RTA_METRICS container: %m"); | |
1505 | return 0; | |
1506 | } | |
1507 | } | |
1508 | ||
f9bb3338 YW |
1509 | r = sd_netlink_message_read_data(message, RTA_MULTIPATH, &rta_len, &rta_multipath); |
1510 | if (r < 0 && r != -ENODATA) { | |
1511 | log_link_warning_errno(link, r, "rtnl: failed to read RTA_MULTIPATH attribute, ignoring: %m"); | |
1512 | return 0; | |
1513 | } else if (r >= 0) { | |
1514 | r = rtattr_read_nexthop(rta_multipath, rta_len, tmp->family, &multipath_routes); | |
1515 | if (r < 0) { | |
1516 | log_link_warning_errno(link, r, "rtnl: failed to parse RTA_MULTIPATH attribute, ignoring: %m"); | |
1517 | return 0; | |
4468f01b | 1518 | } |
4468f01b YW |
1519 | } |
1520 | ||
575f14ee YW |
1521 | /* IPv6 routes with reject type are always assigned to the loopback interface. See kernel's |
1522 | * fib6_nh_init() in net/ipv6/route.c. However, we'd like to manage them by Manager. Hence, set | |
1523 | * link to NULL here. */ | |
1524 | if (route_type_is_reject(tmp)) | |
1525 | link = NULL; | |
1526 | ||
f9bb3338 YW |
1527 | if (ordered_set_isempty(multipath_routes)) |
1528 | (void) process_route_one(m, link, type, tmp, NULL); | |
1529 | else { | |
1530 | MultipathRoute *mr; | |
4468f01b | 1531 | |
f9bb3338 YW |
1532 | ORDERED_SET_FOREACH(mr, multipath_routes) { |
1533 | r = process_route_one(m, link, type, tmp, mr); | |
1534 | if (r < 0) | |
1535 | break; | |
1536 | } | |
4468f01b YW |
1537 | } |
1538 | ||
1539 | return 1; | |
1540 | } | |
1541 | ||
fa7cd711 | 1542 | int network_add_ipv4ll_route(Network *network) { |
fcbf4cb7 | 1543 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
2a54a044 | 1544 | unsigned section_line; |
fa7cd711 YW |
1545 | int r; |
1546 | ||
1547 | assert(network); | |
1548 | ||
1549 | if (!network->ipv4ll_route) | |
1550 | return 0; | |
1551 | ||
2a54a044 YW |
1552 | section_line = hashmap_find_free_section_line(network->routes_by_section); |
1553 | ||
fa7cd711 | 1554 | /* IPv4LLRoute= is in [Network] section. */ |
2a54a044 | 1555 | r = route_new_static(network, network->filename, section_line, &n); |
fa7cd711 YW |
1556 | if (r < 0) |
1557 | return r; | |
1558 | ||
1559 | r = in_addr_from_string(AF_INET, "169.254.0.0", &n->dst); | |
1560 | if (r < 0) | |
1561 | return r; | |
1562 | ||
1563 | n->family = AF_INET; | |
1564 | n->dst_prefixlen = 16; | |
1565 | n->scope = RT_SCOPE_LINK; | |
94d6e299 YW |
1566 | n->scope_set = true; |
1567 | n->table_set = true; | |
fa7cd711 YW |
1568 | n->priority = IPV4LL_ROUTE_METRIC; |
1569 | n->protocol = RTPROT_STATIC; | |
1570 | ||
1571 | TAKE_PTR(n); | |
1572 | return 0; | |
1573 | } | |
1574 | ||
5d5003ab YW |
1575 | int network_add_default_route_on_device(Network *network) { |
1576 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; | |
2a54a044 | 1577 | unsigned section_line; |
5d5003ab YW |
1578 | int r; |
1579 | ||
1580 | assert(network); | |
1581 | ||
1582 | if (!network->default_route_on_device) | |
1583 | return 0; | |
1584 | ||
2a54a044 YW |
1585 | section_line = hashmap_find_free_section_line(network->routes_by_section); |
1586 | ||
5d5003ab | 1587 | /* DefaultRouteOnDevice= is in [Network] section. */ |
2a54a044 | 1588 | r = route_new_static(network, network->filename, section_line, &n); |
5d5003ab YW |
1589 | if (r < 0) |
1590 | return r; | |
1591 | ||
5d5003ab | 1592 | n->family = AF_INET; |
c697db75 YW |
1593 | n->scope = RT_SCOPE_LINK; |
1594 | n->scope_set = true; | |
1595 | n->protocol = RTPROT_STATIC; | |
5d5003ab YW |
1596 | |
1597 | TAKE_PTR(n); | |
1598 | return 0; | |
1599 | } | |
1600 | ||
27efb52b YW |
1601 | int config_parse_gateway( |
1602 | const char *unit, | |
f579559b TG |
1603 | const char *filename, |
1604 | unsigned line, | |
1605 | const char *section, | |
71a61510 | 1606 | unsigned section_line, |
f579559b TG |
1607 | const char *lvalue, |
1608 | int ltype, | |
1609 | const char *rvalue, | |
1610 | void *data, | |
1611 | void *userdata) { | |
44e7b949 | 1612 | |
6ae115c1 | 1613 | Network *network = userdata; |
fcbf4cb7 | 1614 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
7934dede | 1615 | int r; |
f579559b TG |
1616 | |
1617 | assert(filename); | |
6ae115c1 | 1618 | assert(section); |
f579559b TG |
1619 | assert(lvalue); |
1620 | assert(rvalue); | |
1621 | assert(data); | |
1622 | ||
92fe133a | 1623 | if (streq(section, "Network")) { |
2a54a044 YW |
1624 | /* we are not in an Route section, so use line number instead */ |
1625 | r = route_new_static(network, filename, line, &n); | |
d96edb2c YW |
1626 | if (r == -ENOMEM) |
1627 | return log_oom(); | |
1628 | if (r < 0) { | |
1629 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1630 | "Failed to allocate route, ignoring assignment: %m"); | |
1631 | return 0; | |
1632 | } | |
1985c54f | 1633 | } else { |
f4859fc7 | 1634 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1635 | if (r == -ENOMEM) |
1636 | return log_oom(); | |
1637 | if (r < 0) { | |
1638 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1639 | "Failed to allocate route, ignoring assignment: %m"); | |
1640 | return 0; | |
1641 | } | |
1985c54f | 1642 | |
d442bb37 | 1643 | if (isempty(rvalue)) { |
1a3a6309 | 1644 | n->gateway_from_dhcp_or_ra = false; |
d442bb37 YW |
1645 | n->gw_family = AF_UNSPEC; |
1646 | n->gw = IN_ADDR_NULL; | |
1647 | TAKE_PTR(n); | |
1648 | return 0; | |
1649 | } | |
1650 | ||
427928ca | 1651 | if (streq(rvalue, "_dhcp")) { |
1a3a6309 | 1652 | n->gateway_from_dhcp_or_ra = true; |
1985c54f YW |
1653 | TAKE_PTR(n); |
1654 | return 0; | |
1655 | } | |
d306d1d0 YW |
1656 | |
1657 | if (streq(rvalue, "_dhcp4")) { | |
1658 | n->gw_family = AF_INET; | |
1a3a6309 | 1659 | n->gateway_from_dhcp_or_ra = true; |
d306d1d0 YW |
1660 | TAKE_PTR(n); |
1661 | return 0; | |
1662 | } | |
1663 | ||
b8caa4ef | 1664 | if (streq(rvalue, "_ipv6ra")) { |
d306d1d0 | 1665 | n->gw_family = AF_INET6; |
1a3a6309 | 1666 | n->gateway_from_dhcp_or_ra = true; |
d306d1d0 YW |
1667 | TAKE_PTR(n); |
1668 | return 0; | |
1669 | } | |
1985c54f | 1670 | } |
f579559b | 1671 | |
6dd53981 | 1672 | r = in_addr_from_string_auto(rvalue, &n->gw_family, &n->gw); |
f579559b | 1673 | if (r < 0) { |
d96edb2c | 1674 | log_syntax(unit, LOG_WARNING, filename, line, r, |
01d4e732 | 1675 | "Invalid %s='%s', ignoring assignment: %m", lvalue, rvalue); |
f579559b TG |
1676 | return 0; |
1677 | } | |
1678 | ||
1a3a6309 | 1679 | n->gateway_from_dhcp_or_ra = false; |
aff44301 | 1680 | TAKE_PTR(n); |
f579559b TG |
1681 | return 0; |
1682 | } | |
6ae115c1 | 1683 | |
27efb52b YW |
1684 | int config_parse_preferred_src( |
1685 | const char *unit, | |
0d07e595 JK |
1686 | const char *filename, |
1687 | unsigned line, | |
1688 | const char *section, | |
1689 | unsigned section_line, | |
1690 | const char *lvalue, | |
1691 | int ltype, | |
1692 | const char *rvalue, | |
1693 | void *data, | |
1694 | void *userdata) { | |
1695 | ||
1696 | Network *network = userdata; | |
fcbf4cb7 | 1697 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
7934dede | 1698 | int r; |
0d07e595 JK |
1699 | |
1700 | assert(filename); | |
1701 | assert(section); | |
1702 | assert(lvalue); | |
1703 | assert(rvalue); | |
1704 | assert(data); | |
1705 | ||
f4859fc7 | 1706 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1707 | if (r == -ENOMEM) |
1708 | return log_oom(); | |
1709 | if (r < 0) { | |
1710 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1711 | "Failed to allocate route, ignoring assignment: %m"); | |
1712 | return 0; | |
1713 | } | |
0d07e595 | 1714 | |
01d4e732 YW |
1715 | if (n->family == AF_UNSPEC) |
1716 | r = in_addr_from_string_auto(rvalue, &n->family, &n->prefsrc); | |
1717 | else | |
1718 | r = in_addr_from_string(n->family, rvalue, &n->prefsrc); | |
0d07e595 | 1719 | if (r < 0) { |
d96edb2c | 1720 | log_syntax(unit, LOG_WARNING, filename, line, EINVAL, |
01d4e732 | 1721 | "Invalid %s='%s', ignoring assignment: %m", lvalue, rvalue); |
0d07e595 JK |
1722 | return 0; |
1723 | } | |
1724 | ||
aff44301 | 1725 | TAKE_PTR(n); |
0d07e595 JK |
1726 | return 0; |
1727 | } | |
1728 | ||
27efb52b YW |
1729 | int config_parse_destination( |
1730 | const char *unit, | |
6ae115c1 TG |
1731 | const char *filename, |
1732 | unsigned line, | |
1733 | const char *section, | |
1734 | unsigned section_line, | |
1735 | const char *lvalue, | |
1736 | int ltype, | |
1737 | const char *rvalue, | |
1738 | void *data, | |
1739 | void *userdata) { | |
44e7b949 | 1740 | |
6ae115c1 | 1741 | Network *network = userdata; |
fcbf4cb7 | 1742 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
7934dede YW |
1743 | union in_addr_union *buffer; |
1744 | unsigned char *prefixlen; | |
ca3bad65 | 1745 | int r; |
6ae115c1 TG |
1746 | |
1747 | assert(filename); | |
1748 | assert(section); | |
1749 | assert(lvalue); | |
1750 | assert(rvalue); | |
1751 | assert(data); | |
1752 | ||
f4859fc7 | 1753 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1754 | if (r == -ENOMEM) |
1755 | return log_oom(); | |
1756 | if (r < 0) { | |
1757 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1758 | "Failed to allocate route, ignoring assignment: %m"); | |
1759 | return 0; | |
1760 | } | |
6ae115c1 | 1761 | |
9e7e4408 | 1762 | if (streq(lvalue, "Destination")) { |
7934dede YW |
1763 | buffer = &n->dst; |
1764 | prefixlen = &n->dst_prefixlen; | |
9e7e4408 | 1765 | } else if (streq(lvalue, "Source")) { |
7934dede YW |
1766 | buffer = &n->src; |
1767 | prefixlen = &n->src_prefixlen; | |
9e7e4408 TG |
1768 | } else |
1769 | assert_not_reached(lvalue); | |
1770 | ||
01d4e732 YW |
1771 | if (n->family == AF_UNSPEC) |
1772 | r = in_addr_prefix_from_string_auto(rvalue, &n->family, buffer, prefixlen); | |
1773 | else | |
1774 | r = in_addr_prefix_from_string(rvalue, n->family, buffer, prefixlen); | |
7934dede | 1775 | if (r < 0) { |
d96edb2c | 1776 | log_syntax(unit, LOG_WARNING, filename, line, EINVAL, |
01d4e732 | 1777 | "Invalid %s='%s', ignoring assignment: %m", lvalue, rvalue); |
7934dede YW |
1778 | return 0; |
1779 | } | |
1780 | ||
aff44301 | 1781 | TAKE_PTR(n); |
6ae115c1 TG |
1782 | return 0; |
1783 | } | |
5d8e593d | 1784 | |
27efb52b YW |
1785 | int config_parse_route_priority( |
1786 | const char *unit, | |
1787 | const char *filename, | |
1788 | unsigned line, | |
1789 | const char *section, | |
1790 | unsigned section_line, | |
1791 | const char *lvalue, | |
1792 | int ltype, | |
1793 | const char *rvalue, | |
1794 | void *data, | |
1795 | void *userdata) { | |
1796 | ||
5d8e593d | 1797 | Network *network = userdata; |
fcbf4cb7 | 1798 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
5d8e593d SS |
1799 | int r; |
1800 | ||
1801 | assert(filename); | |
1802 | assert(section); | |
1803 | assert(lvalue); | |
1804 | assert(rvalue); | |
1805 | assert(data); | |
1806 | ||
f4859fc7 | 1807 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1808 | if (r == -ENOMEM) |
1809 | return log_oom(); | |
1810 | if (r < 0) { | |
1811 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1812 | "Failed to allocate route, ignoring assignment: %m"); | |
1813 | return 0; | |
1814 | } | |
5d8e593d | 1815 | |
aff44301 | 1816 | r = safe_atou32(rvalue, &n->priority); |
1c4b1179 | 1817 | if (r < 0) { |
d96edb2c | 1818 | log_syntax(unit, LOG_WARNING, filename, line, r, |
1c4b1179 SS |
1819 | "Could not parse route priority \"%s\", ignoring assignment: %m", rvalue); |
1820 | return 0; | |
1821 | } | |
5d8e593d | 1822 | |
c27abcf4 | 1823 | n->priority_set = true; |
aff44301 | 1824 | TAKE_PTR(n); |
5d8e593d SS |
1825 | return 0; |
1826 | } | |
769b56a3 | 1827 | |
27efb52b YW |
1828 | int config_parse_route_scope( |
1829 | const char *unit, | |
1830 | const char *filename, | |
1831 | unsigned line, | |
1832 | const char *section, | |
1833 | unsigned section_line, | |
1834 | const char *lvalue, | |
1835 | int ltype, | |
1836 | const char *rvalue, | |
1837 | void *data, | |
1838 | void *userdata) { | |
1839 | ||
769b56a3 | 1840 | Network *network = userdata; |
fcbf4cb7 | 1841 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
769b56a3 TG |
1842 | int r; |
1843 | ||
1844 | assert(filename); | |
1845 | assert(section); | |
1846 | assert(lvalue); | |
1847 | assert(rvalue); | |
1848 | assert(data); | |
1849 | ||
f4859fc7 | 1850 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1851 | if (r == -ENOMEM) |
1852 | return log_oom(); | |
1853 | if (r < 0) { | |
1854 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1855 | "Failed to allocate route, ignoring assignment: %m"); | |
1856 | return 0; | |
1857 | } | |
769b56a3 | 1858 | |
41b90a1e YW |
1859 | r = route_scope_from_string(rvalue); |
1860 | if (r < 0) { | |
d96edb2c | 1861 | log_syntax(unit, LOG_WARNING, filename, line, 0, "Unknown route scope: %s", rvalue); |
769b56a3 TG |
1862 | return 0; |
1863 | } | |
1864 | ||
41b90a1e | 1865 | n->scope = r; |
94d6e299 | 1866 | n->scope_set = true; |
aff44301 | 1867 | TAKE_PTR(n); |
769b56a3 TG |
1868 | return 0; |
1869 | } | |
c953b24c | 1870 | |
c038ce46 SS |
1871 | int route_table_from_string_full(Manager *m, const char *s, uint32_t *ret) { |
1872 | int r; | |
1873 | ||
1874 | assert(s); | |
1875 | assert(m); | |
1876 | assert(ret); | |
1877 | ||
1878 | r = route_table_from_string(s); | |
1879 | if (r >= 0) { | |
1880 | *ret = (uint32_t) r; | |
1881 | return 0; | |
1882 | } | |
1883 | ||
1884 | uint32_t t = PTR_TO_UINT32(hashmap_get(m->route_tables, s)); | |
1885 | if (t != 0) { | |
1886 | *ret = t; | |
1887 | return 0; | |
1888 | } | |
1889 | ||
1890 | return safe_atou32(s, ret); | |
1891 | } | |
1892 | ||
27efb52b YW |
1893 | int config_parse_route_table( |
1894 | const char *unit, | |
1895 | const char *filename, | |
1896 | unsigned line, | |
1897 | const char *section, | |
1898 | unsigned section_line, | |
1899 | const char *lvalue, | |
1900 | int ltype, | |
1901 | const char *rvalue, | |
1902 | void *data, | |
1903 | void *userdata) { | |
1904 | ||
fcbf4cb7 | 1905 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
c953b24c | 1906 | Network *network = userdata; |
c953b24c SS |
1907 | int r; |
1908 | ||
1909 | assert(filename); | |
1910 | assert(section); | |
1911 | assert(lvalue); | |
1912 | assert(rvalue); | |
1913 | assert(data); | |
1914 | ||
f4859fc7 | 1915 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
1916 | if (r == -ENOMEM) |
1917 | return log_oom(); | |
1918 | if (r < 0) { | |
1919 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1920 | "Failed to allocate route, ignoring assignment: %m"); | |
1921 | return 0; | |
1922 | } | |
c953b24c | 1923 | |
c038ce46 SS |
1924 | r = route_table_from_string_full(network->manager, rvalue, &n->table); |
1925 | if (r < 0) { | |
1926 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1927 | "Could not parse route table number \"%s\", ignoring assignment: %m", rvalue); | |
1928 | return 0; | |
c953b24c SS |
1929 | } |
1930 | ||
94d6e299 | 1931 | n->table_set = true; |
aff44301 | 1932 | TAKE_PTR(n); |
c953b24c SS |
1933 | return 0; |
1934 | } | |
28959f7d | 1935 | |
d96edb2c | 1936 | int config_parse_route_boolean( |
27efb52b YW |
1937 | const char *unit, |
1938 | const char *filename, | |
1939 | unsigned line, | |
1940 | const char *section, | |
1941 | unsigned section_line, | |
1942 | const char *lvalue, | |
1943 | int ltype, | |
1944 | const char *rvalue, | |
1945 | void *data, | |
1946 | void *userdata) { | |
1947 | ||
28959f7d | 1948 | Network *network = userdata; |
fcbf4cb7 | 1949 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
28959f7d SS |
1950 | int r; |
1951 | ||
1952 | assert(filename); | |
1953 | assert(section); | |
1954 | assert(lvalue); | |
1955 | assert(rvalue); | |
1956 | assert(data); | |
1957 | ||
1958 | r = route_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
1959 | if (r == -ENOMEM) |
1960 | return log_oom(); | |
1961 | if (r < 0) { | |
1962 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
1963 | "Failed to allocate route, ignoring assignment: %m"); | |
1964 | return 0; | |
1965 | } | |
28959f7d SS |
1966 | |
1967 | r = parse_boolean(rvalue); | |
1968 | if (r < 0) { | |
d96edb2c | 1969 | log_syntax(unit, LOG_WARNING, filename, line, r, |
9cb8c559 | 1970 | "Could not parse %s=\"%s\", ignoring assignment: %m", lvalue, rvalue); |
28959f7d SS |
1971 | return 0; |
1972 | } | |
1973 | ||
d96edb2c YW |
1974 | if (STR_IN_SET(lvalue, "GatewayOnLink", "GatewayOnlink")) |
1975 | n->gateway_onlink = r; | |
1976 | else if (streq(lvalue, "QuickAck")) | |
1977 | n->quickack = r; | |
1978 | else if (streq(lvalue, "FastOpenNoCookie")) | |
1979 | n->fast_open_no_cookie = r; | |
1980 | else if (streq(lvalue, "TTLPropagate")) | |
1981 | n->ttl_propagate = r; | |
1982 | else | |
1983 | assert_not_reached("Invalid lvalue"); | |
54901fd2 | 1984 | |
aff44301 | 1985 | TAKE_PTR(n); |
b5bf6f64 SS |
1986 | return 0; |
1987 | } | |
1988 | ||
27efb52b YW |
1989 | int config_parse_ipv6_route_preference( |
1990 | const char *unit, | |
1991 | const char *filename, | |
1992 | unsigned line, | |
1993 | const char *section, | |
1994 | unsigned section_line, | |
1995 | const char *lvalue, | |
1996 | int ltype, | |
1997 | const char *rvalue, | |
1998 | void *data, | |
1999 | void *userdata) { | |
2000 | ||
b5bf6f64 | 2001 | Network *network = userdata; |
fcbf4cb7 | 2002 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
b5bf6f64 SS |
2003 | int r; |
2004 | ||
4c7bd9cf | 2005 | r = route_new_static(network, filename, section_line, &n); |
d96edb2c YW |
2006 | if (r == -ENOMEM) |
2007 | return log_oom(); | |
2008 | if (r < 0) { | |
2009 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2010 | "Failed to allocate route, ignoring assignment: %m"); | |
2011 | return 0; | |
2012 | } | |
4c7bd9cf | 2013 | |
b5bf6f64 SS |
2014 | if (streq(rvalue, "low")) |
2015 | n->pref = ICMPV6_ROUTER_PREF_LOW; | |
2016 | else if (streq(rvalue, "medium")) | |
2017 | n->pref = ICMPV6_ROUTER_PREF_MEDIUM; | |
2018 | else if (streq(rvalue, "high")) | |
2019 | n->pref = ICMPV6_ROUTER_PREF_HIGH; | |
2020 | else { | |
d96edb2c | 2021 | log_syntax(unit, LOG_WARNING, filename, line, 0, "Unknown route preference: %s", rvalue); |
b5bf6f64 SS |
2022 | return 0; |
2023 | } | |
28959f7d | 2024 | |
c27abcf4 | 2025 | n->pref_set = true; |
aff44301 | 2026 | TAKE_PTR(n); |
28959f7d SS |
2027 | return 0; |
2028 | } | |
c83ecc04 | 2029 | |
27efb52b YW |
2030 | int config_parse_route_protocol( |
2031 | const char *unit, | |
2032 | const char *filename, | |
2033 | unsigned line, | |
2034 | const char *section, | |
2035 | unsigned section_line, | |
2036 | const char *lvalue, | |
2037 | int ltype, | |
2038 | const char *rvalue, | |
2039 | void *data, | |
2040 | void *userdata) { | |
2041 | ||
c83ecc04 | 2042 | Network *network = userdata; |
fcbf4cb7 | 2043 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
c83ecc04 SS |
2044 | int r; |
2045 | ||
2046 | r = route_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
2047 | if (r == -ENOMEM) |
2048 | return log_oom(); | |
2049 | if (r < 0) { | |
2050 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2051 | "Failed to allocate route, ignoring assignment: %m"); | |
2052 | return 0; | |
2053 | } | |
c83ecc04 | 2054 | |
1b64651b YW |
2055 | r = route_protocol_from_string(rvalue); |
2056 | if (r >= 0) | |
2057 | n->protocol = r; | |
c83ecc04 SS |
2058 | else { |
2059 | r = safe_atou8(rvalue , &n->protocol); | |
2060 | if (r < 0) { | |
d96edb2c | 2061 | log_syntax(unit, LOG_WARNING, filename, line, r, |
f205a92a | 2062 | "Could not parse route protocol \"%s\", ignoring assignment: %m", rvalue); |
c83ecc04 SS |
2063 | return 0; |
2064 | } | |
2065 | } | |
2066 | ||
aff44301 | 2067 | TAKE_PTR(n); |
c83ecc04 SS |
2068 | return 0; |
2069 | } | |
983226f3 | 2070 | |
27efb52b YW |
2071 | int config_parse_route_type( |
2072 | const char *unit, | |
2073 | const char *filename, | |
2074 | unsigned line, | |
2075 | const char *section, | |
2076 | unsigned section_line, | |
2077 | const char *lvalue, | |
2078 | int ltype, | |
2079 | const char *rvalue, | |
2080 | void *data, | |
2081 | void *userdata) { | |
2082 | ||
983226f3 | 2083 | Network *network = userdata; |
fcbf4cb7 | 2084 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
7a22312d | 2085 | int t, r; |
983226f3 SS |
2086 | |
2087 | r = route_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
2088 | if (r == -ENOMEM) |
2089 | return log_oom(); | |
2090 | if (r < 0) { | |
2091 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2092 | "Failed to allocate route, ignoring assignment: %m"); | |
2093 | return 0; | |
2094 | } | |
983226f3 | 2095 | |
7a22312d YW |
2096 | t = route_type_from_string(rvalue); |
2097 | if (t < 0) { | |
d96edb2c | 2098 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
f205a92a | 2099 | "Could not parse route type \"%s\", ignoring assignment: %m", rvalue); |
983226f3 SS |
2100 | return 0; |
2101 | } | |
2102 | ||
7a22312d YW |
2103 | n->type = (unsigned char) t; |
2104 | ||
aff44301 | 2105 | TAKE_PTR(n); |
983226f3 SS |
2106 | return 0; |
2107 | } | |
323d9329 | 2108 | |
007cac09 SS |
2109 | int config_parse_tcp_advmss( |
2110 | const char *unit, | |
2111 | const char *filename, | |
2112 | unsigned line, | |
2113 | const char *section, | |
2114 | unsigned section_line, | |
2115 | const char *lvalue, | |
2116 | int ltype, | |
2117 | const char *rvalue, | |
2118 | void *data, | |
2119 | void *userdata) { | |
2120 | ||
2121 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; | |
2122 | Network *network = userdata; | |
2123 | uint64_t u; | |
2124 | int r; | |
2125 | ||
2126 | assert(filename); | |
2127 | assert(section); | |
2128 | assert(lvalue); | |
2129 | assert(rvalue); | |
2130 | assert(data); | |
2131 | ||
2132 | r = route_new_static(network, filename, section_line, &n); | |
2133 | if (r == -ENOMEM) | |
2134 | return log_oom(); | |
2135 | if (r < 0) { | |
2136 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2137 | "Failed to allocate route, ignoring assignment: %m"); | |
2138 | return 0; | |
2139 | } | |
2140 | ||
2141 | if (isempty(rvalue)) { | |
2142 | n->advmss = 0; | |
78ebbf02 | 2143 | TAKE_PTR(n); |
007cac09 SS |
2144 | return 0; |
2145 | } | |
2146 | ||
2147 | r = parse_size(rvalue, 1024, &u); | |
2148 | if (r < 0) { | |
2149 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2150 | "Could not parse TCPAdvertisedMaximumSegmentSize= \"%s\", ignoring assignment: %m", rvalue); | |
2151 | return 0; | |
2152 | } | |
2153 | ||
2154 | if (u == 0 || u > UINT32_MAX) { | |
2155 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
2156 | "Invalid TCPAdvertisedMaximumSegmentSize= \"%s\", ignoring assignment: %m", rvalue); | |
2157 | return 0; | |
2158 | } | |
2159 | ||
2160 | n->advmss = u; | |
2161 | ||
2162 | TAKE_PTR(n); | |
2163 | return 0; | |
2164 | } | |
2165 | ||
27efb52b YW |
2166 | int config_parse_tcp_window( |
2167 | const char *unit, | |
2168 | const char *filename, | |
2169 | unsigned line, | |
2170 | const char *section, | |
2171 | unsigned section_line, | |
2172 | const char *lvalue, | |
2173 | int ltype, | |
2174 | const char *rvalue, | |
2175 | void *data, | |
2176 | void *userdata) { | |
2177 | ||
fcbf4cb7 | 2178 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
6b21ad33 | 2179 | Network *network = userdata; |
fef160b5 | 2180 | uint32_t k; |
323d9329 SS |
2181 | int r; |
2182 | ||
2183 | assert(filename); | |
2184 | assert(section); | |
2185 | assert(lvalue); | |
2186 | assert(rvalue); | |
2187 | assert(data); | |
2188 | ||
2189 | r = route_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
2190 | if (r == -ENOMEM) |
2191 | return log_oom(); | |
2192 | if (r < 0) { | |
2193 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2194 | "Failed to allocate route, ignoring assignment: %m"); | |
2195 | return 0; | |
2196 | } | |
323d9329 | 2197 | |
fef160b5 | 2198 | r = safe_atou32(rvalue, &k); |
f205a92a | 2199 | if (r < 0) { |
d96edb2c | 2200 | log_syntax(unit, LOG_WARNING, filename, line, r, |
f205a92a YW |
2201 | "Could not parse TCP %s \"%s\", ignoring assignment: %m", lvalue, rvalue); |
2202 | return 0; | |
2203 | } | |
fef160b5 | 2204 | if (k >= 1024) { |
d96edb2c | 2205 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
f205a92a | 2206 | "Specified TCP %s \"%s\" is too large, ignoring assignment: %m", lvalue, rvalue); |
323d9329 SS |
2207 | return 0; |
2208 | } | |
fd9d7de1 SS |
2209 | if (k == 0) { |
2210 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
2211 | "Invalid TCP %s \"%s\", ignoring assignment: %m", lvalue, rvalue); | |
2212 | return 0; | |
2213 | } | |
323d9329 SS |
2214 | |
2215 | if (streq(lvalue, "InitialCongestionWindow")) | |
2216 | n->initcwnd = k; | |
2217 | else if (streq(lvalue, "InitialAdvertisedReceiveWindow")) | |
2218 | n->initrwnd = k; | |
f205a92a YW |
2219 | else |
2220 | assert_not_reached("Invalid TCP window type."); | |
323d9329 | 2221 | |
aff44301 | 2222 | TAKE_PTR(n); |
323d9329 SS |
2223 | return 0; |
2224 | } | |
09f5dfad | 2225 | |
cea79e66 SS |
2226 | int config_parse_route_mtu( |
2227 | const char *unit, | |
2228 | const char *filename, | |
2229 | unsigned line, | |
2230 | const char *section, | |
2231 | unsigned section_line, | |
2232 | const char *lvalue, | |
2233 | int ltype, | |
2234 | const char *rvalue, | |
2235 | void *data, | |
2236 | void *userdata) { | |
2237 | ||
2238 | Network *network = userdata; | |
fcbf4cb7 | 2239 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; |
cea79e66 SS |
2240 | int r; |
2241 | ||
2242 | assert(filename); | |
2243 | assert(section); | |
2244 | assert(lvalue); | |
2245 | assert(rvalue); | |
2246 | assert(data); | |
2247 | ||
2248 | r = route_new_static(network, filename, section_line, &n); | |
d96edb2c YW |
2249 | if (r == -ENOMEM) |
2250 | return log_oom(); | |
2251 | if (r < 0) { | |
2252 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2253 | "Failed to allocate route, ignoring assignment: %m"); | |
2254 | return 0; | |
2255 | } | |
cea79e66 SS |
2256 | |
2257 | r = config_parse_mtu(unit, filename, line, section, section_line, lvalue, ltype, rvalue, &n->mtu, userdata); | |
2258 | if (r < 0) | |
2259 | return r; | |
2260 | ||
aff44301 | 2261 | TAKE_PTR(n); |
cea79e66 SS |
2262 | return 0; |
2263 | } | |
fcbf4cb7 | 2264 | |
6ff5cc6b YW |
2265 | int config_parse_multipath_route( |
2266 | const char *unit, | |
2267 | const char *filename, | |
2268 | unsigned line, | |
2269 | const char *section, | |
2270 | unsigned section_line, | |
2271 | const char *lvalue, | |
2272 | int ltype, | |
2273 | const char *rvalue, | |
2274 | void *data, | |
2275 | void *userdata) { | |
2276 | ||
2277 | _cleanup_(route_free_or_set_invalidp) Route *n = NULL; | |
2278 | _cleanup_free_ char *word = NULL, *buf = NULL; | |
2279 | _cleanup_free_ MultipathRoute *m = NULL; | |
2280 | Network *network = userdata; | |
2281 | const char *p, *ip, *dev; | |
2282 | union in_addr_union a; | |
2283 | int family, r; | |
2284 | ||
2285 | assert(filename); | |
2286 | assert(section); | |
2287 | assert(lvalue); | |
2288 | assert(rvalue); | |
2289 | assert(data); | |
2290 | ||
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 | } | |
6ff5cc6b YW |
2299 | |
2300 | if (isempty(rvalue)) { | |
2301 | n->multipath_routes = ordered_set_free_free(n->multipath_routes); | |
2302 | return 0; | |
2303 | } | |
2304 | ||
2305 | m = new0(MultipathRoute, 1); | |
2306 | if (!m) | |
2307 | return log_oom(); | |
2308 | ||
2309 | p = rvalue; | |
2310 | r = extract_first_word(&p, &word, NULL, 0); | |
2311 | if (r == -ENOMEM) | |
2312 | return log_oom(); | |
2313 | if (r <= 0) { | |
d96edb2c | 2314 | log_syntax(unit, LOG_WARNING, filename, line, r, |
6ff5cc6b YW |
2315 | "Invalid multipath route option, ignoring assignment: %s", rvalue); |
2316 | return 0; | |
2317 | } | |
2318 | ||
2319 | dev = strchr(word, '@'); | |
2320 | if (dev) { | |
2321 | buf = strndup(word, dev - word); | |
2322 | if (!buf) | |
2323 | return log_oom(); | |
2324 | ip = buf; | |
2325 | dev++; | |
2326 | } else | |
2327 | ip = word; | |
2328 | ||
2329 | r = in_addr_from_string_auto(ip, &family, &a); | |
2330 | if (r < 0) { | |
d96edb2c | 2331 | log_syntax(unit, LOG_WARNING, filename, line, r, |
6ff5cc6b YW |
2332 | "Invalid multipath route gateway '%s', ignoring assignment: %m", rvalue); |
2333 | return 0; | |
2334 | } | |
2335 | m->gateway.address = a; | |
2336 | m->gateway.family = family; | |
2337 | ||
2338 | if (dev) { | |
d308bb99 | 2339 | r = resolve_interface(NULL, dev); |
6ff5cc6b | 2340 | if (r < 0) { |
d96edb2c | 2341 | log_syntax(unit, LOG_WARNING, filename, line, r, |
6ff5cc6b YW |
2342 | "Invalid interface name or index, ignoring assignment: %s", dev); |
2343 | return 0; | |
2344 | } | |
597da51b | 2345 | m->ifindex = r; |
6ff5cc6b YW |
2346 | } |
2347 | ||
2348 | if (!isempty(p)) { | |
2349 | r = safe_atou32(p, &m->weight); | |
2350 | if (r < 0) { | |
d96edb2c | 2351 | log_syntax(unit, LOG_WARNING, filename, line, r, |
6ff5cc6b YW |
2352 | "Invalid multipath route weight, ignoring assignment: %s", p); |
2353 | return 0; | |
2354 | } | |
2355 | if (m->weight == 0 || m->weight > 256) { | |
d96edb2c | 2356 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
6ff5cc6b YW |
2357 | "Invalid multipath route weight, ignoring assignment: %s", p); |
2358 | return 0; | |
2359 | } | |
2360 | } | |
2361 | ||
8cb34651 SS |
2362 | r = ordered_set_ensure_put(&n->multipath_routes, NULL, m); |
2363 | if (r == -ENOMEM) | |
6ff5cc6b | 2364 | return log_oom(); |
6ff5cc6b | 2365 | if (r < 0) { |
d96edb2c | 2366 | log_syntax(unit, LOG_WARNING, filename, line, r, |
6ff5cc6b YW |
2367 | "Failed to store multipath route, ignoring assignment: %m"); |
2368 | return 0; | |
2369 | } | |
2370 | ||
2371 | TAKE_PTR(m); | |
2372 | TAKE_PTR(n); | |
2373 | return 0; | |
2374 | } | |
2375 | ||
c038ce46 SS |
2376 | int config_parse_route_table_names( |
2377 | const char *unit, | |
2378 | const char *filename, | |
2379 | unsigned line, | |
2380 | const char *section, | |
2381 | unsigned section_line, | |
2382 | const char *lvalue, | |
2383 | int ltype, | |
2384 | const char *rvalue, | |
2385 | void *data, | |
2386 | void *userdata) { | |
2387 | ||
2388 | _cleanup_free_ char *name = NULL; | |
2389 | Hashmap **s = data; | |
2390 | uint32_t table; | |
2391 | const char *p; | |
2392 | int r; | |
2393 | ||
2394 | assert(filename); | |
2395 | assert(lvalue); | |
2396 | assert(rvalue); | |
2397 | assert(data); | |
2398 | ||
2399 | if (isempty(rvalue)) { | |
2400 | *s = hashmap_free_free_key(*s); | |
2401 | return 0; | |
2402 | } | |
2403 | ||
2404 | p = rvalue; | |
2405 | r = extract_first_word(&p, &name, ":", 0); | |
2406 | if (r == -ENOMEM) | |
2407 | return log_oom(); | |
2408 | if (r <= 0 || isempty(p)) { | |
2409 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2410 | "Invalid RouteTable=, ignoring assignment: %s", rvalue); | |
2411 | return 0; | |
2412 | } | |
2413 | ||
2414 | if (STR_IN_SET(name, "default", "main","local")) { | |
2415 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2416 | "Route table name %s already preconfigured. Ignoring assignment: %s", name, rvalue); | |
2417 | return 0; | |
2418 | } | |
2419 | ||
2420 | r = safe_atou32(p, &table); | |
2421 | if (r < 0) { | |
2422 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2423 | "Failed to parse RouteTable=, ignoring assignment: %s", p); | |
2424 | return 0; | |
2425 | } | |
2426 | ||
2427 | if (table == 0) { | |
2428 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
2429 | "Invalid RouteTable=, ignoring assignment: %s", p); | |
2430 | return 0; | |
2431 | } | |
2432 | ||
2433 | r = hashmap_ensure_put(s, &string_hash_ops, name, UINT32_TO_PTR(table)); | |
2434 | if (r == -ENOMEM) | |
2435 | return log_oom(); | |
2436 | if (r == -EEXIST) { | |
2437 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
2438 | "Specified RouteTable= name and value pair conflicts with others, ignoring assignment: %s", rvalue); | |
2439 | return 0; | |
2440 | } | |
2441 | if (r > 0) | |
2442 | TAKE_PTR(name); | |
2443 | ||
2444 | return 0; | |
2445 | } | |
2446 | ||
d9940a3f | 2447 | static int route_section_verify(Route *route, Network *network) { |
fcbf4cb7 YW |
2448 | if (section_is_invalid(route->section)) |
2449 | return -EINVAL; | |
2450 | ||
956dbf36 | 2451 | if (route->gateway_from_dhcp_or_ra) { |
c3d679c4 YW |
2452 | if (route->gw_family == AF_UNSPEC) { |
2453 | /* When deprecated Gateway=_dhcp is set, then assume gateway family based on other settings. */ | |
2454 | switch (route->family) { | |
2455 | case AF_UNSPEC: | |
2456 | log_warning("%s: Deprecated value \"_dhcp\" is specified for Gateway= in [Route] section from line %u. " | |
2457 | "Please use \"_dhcp4\" or \"_ipv6ra\" instead. Assuming \"_dhcp4\".", | |
2458 | route->section->filename, route->section->line); | |
2459 | route->family = AF_INET; | |
2460 | break; | |
2461 | case AF_INET: | |
2462 | case AF_INET6: | |
2463 | log_warning("%s: Deprecated value \"_dhcp\" is specified for Gateway= in [Route] section from line %u. " | |
2464 | "Assuming \"%s\" based on Destination=, Source=, or PreferredSource= setting.", | |
2465 | route->section->filename, route->section->line, route->family == AF_INET ? "_dhcp4" : "_ipv6ra"); | |
2466 | break; | |
2467 | default: | |
2468 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
2469 | "%s: Invalid route family. Ignoring [Route] section from line %u.", | |
2470 | route->section->filename, route->section->line); | |
2471 | } | |
2472 | route->gw_family = route->family; | |
2473 | } | |
2474 | ||
956dbf36 YW |
2475 | if (route->gw_family == AF_INET && !FLAGS_SET(network->dhcp, ADDRESS_FAMILY_IPV4)) |
2476 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
2477 | "%s: Gateway=\"_dhcp4\" is specified but DHCPv4 client is disabled. " | |
2478 | "Ignoring [Route] section from line %u.", | |
2479 | route->section->filename, route->section->line); | |
2480 | ||
2481 | if (route->gw_family == AF_INET6 && !network->ipv6_accept_ra) | |
2482 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
2483 | "%s: Gateway=\"_ipv6ra\" is specified but IPv6AcceptRA= is disabled. " | |
2484 | "Ignoring [Route] section from line %u.", | |
2485 | route->section->filename, route->section->line); | |
2486 | } | |
2487 | ||
c3d679c4 | 2488 | /* When only Gateway= is specified, assume the route family based on the Gateway address. */ |
6dd53981 YW |
2489 | if (route->family == AF_UNSPEC) |
2490 | route->family = route->gw_family; | |
2491 | ||
fcbf4cb7 YW |
2492 | if (route->family == AF_UNSPEC) { |
2493 | assert(route->section); | |
2494 | ||
c3d679c4 YW |
2495 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), |
2496 | "%s: Route section without Gateway=, Destination=, Source=, " | |
2497 | "or PreferredSource= field configured. " | |
2498 | "Ignoring [Route] section from line %u.", | |
2499 | route->section->filename, route->section->line); | |
fcbf4cb7 YW |
2500 | } |
2501 | ||
6dd53981 YW |
2502 | if (route->family == AF_INET6 && route->gw_family == AF_INET) |
2503 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
2504 | "%s: IPv4 gateway is configured for IPv6 route. " | |
2505 | "Ignoring [Route] section from line %u.", | |
2506 | route->section->filename, route->section->line); | |
2507 | ||
c0d48bc5 YW |
2508 | if (!route->table_set && network->vrf) { |
2509 | route->table = VRF(network->vrf)->table; | |
2510 | route->table_set = true; | |
2511 | } | |
2512 | ||
f5c38922 YW |
2513 | if (!route->table_set && IN_SET(route->type, RTN_LOCAL, RTN_BROADCAST, RTN_ANYCAST, RTN_NAT)) |
2514 | route->table = RT_TABLE_LOCAL; | |
2515 | ||
2516 | if (!route->scope_set && route->family != AF_INET6) { | |
2517 | if (IN_SET(route->type, RTN_LOCAL, RTN_NAT)) | |
2518 | route->scope = RT_SCOPE_HOST; | |
2519 | else if (IN_SET(route->type, RTN_BROADCAST, RTN_ANYCAST, RTN_MULTICAST)) | |
2520 | route->scope = RT_SCOPE_LINK; | |
94d6e299 YW |
2521 | } |
2522 | ||
fd7701bf YW |
2523 | if (route->scope != RT_SCOPE_UNIVERSE && route->family == AF_INET6) { |
2524 | log_warning("%s: Scope= is specified for IPv6 route. It will be ignored.", route->section->filename); | |
2525 | route->scope = RT_SCOPE_UNIVERSE; | |
2526 | } | |
2527 | ||
8973df5c YW |
2528 | if (route->family == AF_INET6 && route->priority == 0) |
2529 | route->priority = IP6_RT_PRIO_USER; | |
2530 | ||
9cd9fc8f | 2531 | if (ordered_hashmap_isempty(network->addresses_by_section) && |
6dd53981 | 2532 | in_addr_is_null(route->gw_family, &route->gw) == 0 && |
fcbf4cb7 YW |
2533 | route->gateway_onlink < 0) { |
2534 | log_warning("%s: Gateway= without static address configured. " | |
2535 | "Enabling GatewayOnLink= option.", | |
2536 | network->filename); | |
2537 | route->gateway_onlink = true; | |
2538 | } | |
2539 | ||
2540 | return 0; | |
2541 | } | |
d9940a3f | 2542 | |
13ffa39f | 2543 | void network_drop_invalid_routes(Network *network) { |
2a54a044 | 2544 | Route *route; |
d9940a3f YW |
2545 | |
2546 | assert(network); | |
2547 | ||
2a54a044 | 2548 | HASHMAP_FOREACH(route, network->routes_by_section) |
d9940a3f YW |
2549 | if (route_section_verify(route, network) < 0) |
2550 | route_free(route); | |
2551 | } |