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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
95b74ef6 | 2 | |
edda10f2 | 3 | /* Make sure the net/if.h header is included before any linux/ one */ |
95b74ef6 SS |
4 | #include <net/if.h> |
5 | #include <linux/if_addrlabel.h> | |
6 | ||
7 | #include "alloc-util.h" | |
95b74ef6 | 8 | #include "netlink-util.h" |
fb486c90 YW |
9 | #include "networkd-address-label.h" |
10 | #include "networkd-link.h" | |
95b74ef6 | 11 | #include "networkd-manager.h" |
fb486c90 | 12 | #include "networkd-network.h" |
354bc760 | 13 | #include "networkd-queue.h" |
95b74ef6 | 14 | #include "parse-util.h" |
95b74ef6 | 15 | |
cae418a3 | 16 | AddressLabel *address_label_free(AddressLabel *label) { |
95b74ef6 | 17 | if (!label) |
cae418a3 | 18 | return NULL; |
95b74ef6 SS |
19 | |
20 | if (label->network) { | |
d6a2a0f9 YW |
21 | assert(label->section); |
22 | hashmap_remove(label->network->address_labels_by_section, label->section); | |
95b74ef6 SS |
23 | } |
24 | ||
307fe3cd | 25 | config_section_free(label->section); |
cae418a3 | 26 | return mfree(label); |
95b74ef6 SS |
27 | } |
28 | ||
307fe3cd | 29 | DEFINE_SECTION_CLEANUP_FUNCTIONS(AddressLabel, address_label_free); |
fb486c90 | 30 | |
95b74ef6 | 31 | static int address_label_new_static(Network *network, const char *filename, unsigned section_line, AddressLabel **ret) { |
307fe3cd | 32 | _cleanup_(config_section_freep) ConfigSection *n = NULL; |
8e766630 | 33 | _cleanup_(address_label_freep) AddressLabel *label = NULL; |
95b74ef6 SS |
34 | int r; |
35 | ||
36 | assert(network); | |
37 | assert(ret); | |
d6a2a0f9 YW |
38 | assert(filename); |
39 | assert(section_line > 0); | |
95b74ef6 | 40 | |
307fe3cd | 41 | r = config_section_new(filename, section_line, &n); |
d6a2a0f9 YW |
42 | if (r < 0) |
43 | return r; | |
95b74ef6 | 44 | |
d6a2a0f9 YW |
45 | label = hashmap_get(network->address_labels_by_section, n); |
46 | if (label) { | |
47 | *ret = TAKE_PTR(label); | |
48 | return 0; | |
95b74ef6 SS |
49 | } |
50 | ||
0f7f2769 YW |
51 | label = new(AddressLabel, 1); |
52 | if (!label) | |
53 | return -ENOMEM; | |
95b74ef6 | 54 | |
0f7f2769 YW |
55 | *label = (AddressLabel) { |
56 | .network = network, | |
d6a2a0f9 | 57 | .section = TAKE_PTR(n), |
834f4294 | 58 | .label = UINT32_MAX, |
0f7f2769 | 59 | }; |
95b74ef6 | 60 | |
307fe3cd | 61 | r = hashmap_ensure_put(&network->address_labels_by_section, &config_section_hash_ops, label->section, label); |
d6a2a0f9 YW |
62 | if (r < 0) |
63 | return r; | |
0f7f2769 | 64 | |
1cc6c93a | 65 | *ret = TAKE_PTR(label); |
95b74ef6 SS |
66 | return 0; |
67 | } | |
68 | ||
80d62d4f YW |
69 | static int address_label_configure_handler( |
70 | sd_netlink *rtnl, | |
71 | sd_netlink_message *m, | |
72 | Request *req, | |
73 | Link *link, | |
74 | void *userdata) { | |
75 | ||
cccf9517 YW |
76 | int r; |
77 | ||
cccf9517 YW |
78 | assert(m); |
79 | assert(link); | |
cccf9517 YW |
80 | |
81 | r = sd_netlink_message_get_errno(m); | |
4ff296b0 | 82 | if (r < 0 && r != -EEXIST) { |
5ecb131d | 83 | log_link_message_warning_errno(link, m, r, "Could not set address label"); |
4ff296b0 YW |
84 | link_enter_failed(link); |
85 | return 1; | |
3a1dfdb4 | 86 | } |
cccf9517 | 87 | |
354bc760 | 88 | if (link->static_address_label_messages == 0) { |
cccf9517 | 89 | log_link_debug(link, "Addresses label set"); |
354bc760 YW |
90 | link->static_address_labels_configured = true; |
91 | link_check_ready(link); | |
92 | } | |
cccf9517 YW |
93 | |
94 | return 1; | |
95 | } | |
96 | ||
54ff39f7 | 97 | static int address_label_configure(AddressLabel *label, Link *link, Request *req) { |
a79a8d16 | 98 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; |
95b74ef6 SS |
99 | int r; |
100 | ||
101 | assert(label); | |
102 | assert(link); | |
103 | assert(link->ifindex > 0); | |
104 | assert(link->manager); | |
105 | assert(link->manager->rtnl); | |
54ff39f7 | 106 | assert(req); |
95b74ef6 | 107 | |
a79a8d16 | 108 | r = sd_rtnl_message_new_addrlabel(link->manager->rtnl, &m, RTM_NEWADDRLABEL, |
f7bf1abe | 109 | link->ifindex, AF_INET6); |
95b74ef6 | 110 | if (r < 0) |
a79a8d16 | 111 | return r; |
95b74ef6 | 112 | |
a79a8d16 | 113 | r = sd_rtnl_message_addrlabel_set_prefixlen(m, label->prefixlen); |
95b74ef6 | 114 | if (r < 0) |
a79a8d16 | 115 | return r; |
95b74ef6 | 116 | |
a79a8d16 | 117 | r = sd_netlink_message_append_u32(m, IFAL_LABEL, label->label); |
95b74ef6 | 118 | if (r < 0) |
a79a8d16 | 119 | return r; |
95b74ef6 | 120 | |
a79a8d16 | 121 | r = sd_netlink_message_append_in6_addr(m, IFA_ADDRESS, &label->prefix); |
95b74ef6 | 122 | if (r < 0) |
a79a8d16 | 123 | return r; |
95b74ef6 | 124 | |
80d62d4f | 125 | return request_call_netlink_async(link->manager->rtnl, m, req); |
95b74ef6 SS |
126 | } |
127 | ||
09d09207 | 128 | static int address_label_process_request(Request *req, Link *link, void *userdata) { |
ff51134c | 129 | AddressLabel *label = ASSERT_PTR(userdata); |
8bed7c55 YW |
130 | int r; |
131 | ||
132 | assert(req); | |
ff51134c | 133 | assert(link); |
8bed7c55 YW |
134 | |
135 | if (!link_is_ready_to_configure(link, false)) | |
136 | return 0; | |
137 | ||
ff51134c | 138 | r = address_label_configure(label, link, req); |
8bed7c55 YW |
139 | if (r < 0) |
140 | return log_link_warning_errno(link, r, "Failed to configure address label: %m"); | |
141 | ||
142 | return 1; | |
143 | } | |
144 | ||
354bc760 | 145 | int link_request_static_address_labels(Link *link) { |
fe2bc17c YW |
146 | AddressLabel *label; |
147 | int r; | |
148 | ||
149 | assert(link); | |
150 | assert(link->network); | |
151 | ||
354bc760 YW |
152 | link->static_address_labels_configured = false; |
153 | ||
fe2bc17c | 154 | HASHMAP_FOREACH(label, link->network->address_labels_by_section) { |
09d09207 YW |
155 | r = link_queue_request_full(link, REQUEST_TYPE_ADDRESS_LABEL, |
156 | label, NULL, trivial_hash_func, trivial_compare_func, | |
157 | address_label_process_request, | |
158 | &link->static_address_label_messages, | |
159 | address_label_configure_handler, NULL); | |
fe2bc17c | 160 | if (r < 0) |
354bc760 YW |
161 | return log_link_warning_errno(link, r, "Failed to request address label: %m"); |
162 | } | |
fe2bc17c | 163 | |
354bc760 YW |
164 | if (link->static_address_label_messages == 0) { |
165 | link->static_address_labels_configured = true; | |
166 | link_check_ready(link); | |
167 | } else { | |
168 | log_link_debug(link, "Setting address labels."); | |
169 | link_set_state(link, LINK_STATE_CONFIGURING); | |
fe2bc17c YW |
170 | } |
171 | ||
172 | return 0; | |
173 | } | |
174 | ||
834f4294 YW |
175 | static int address_label_section_verify(AddressLabel *label) { |
176 | assert(label); | |
177 | assert(label->section); | |
178 | ||
179 | if (section_is_invalid(label->section)) | |
180 | return -EINVAL; | |
181 | ||
182 | if (!label->prefix_set) | |
183 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
184 | "%s: [IPv6AddressLabel] section without Prefix= setting specified. " | |
185 | "Ignoring [IPv6AddressLabel] section from line %u.", | |
186 | label->section->filename, label->section->line); | |
187 | ||
188 | if (label->label == UINT32_MAX) | |
189 | return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), | |
190 | "%s: [IPv6AddressLabel] section without Label= setting specified. " | |
191 | "Ignoring [IPv6AddressLabel] section from line %u.", | |
192 | label->section->filename, label->section->line); | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
13ffa39f | 197 | void network_drop_invalid_address_labels(Network *network) { |
ab316813 YW |
198 | AddressLabel *label; |
199 | ||
200 | assert(network); | |
201 | ||
202 | HASHMAP_FOREACH(label, network->address_labels_by_section) | |
834f4294 | 203 | if (address_label_section_verify(label) < 0) |
ab316813 YW |
204 | address_label_free(label); |
205 | } | |
206 | ||
354bc760 YW |
207 | int config_parse_address_label_prefix( |
208 | const char *unit, | |
209 | const char *filename, | |
210 | unsigned line, | |
211 | const char *section, | |
212 | unsigned section_line, | |
213 | const char *lvalue, | |
214 | int ltype, | |
215 | const char *rvalue, | |
216 | void *data, | |
217 | void *userdata) { | |
95b74ef6 | 218 | |
fcbf4cb7 | 219 | _cleanup_(address_label_free_or_set_invalidp) AddressLabel *n = NULL; |
95b74ef6 | 220 | Network *network = userdata; |
2551b422 YW |
221 | unsigned char prefixlen; |
222 | union in_addr_union a; | |
f7bf1abe | 223 | int r; |
95b74ef6 SS |
224 | |
225 | assert(filename); | |
226 | assert(section); | |
227 | assert(lvalue); | |
228 | assert(rvalue); | |
229 | assert(data); | |
230 | ||
231 | r = address_label_new_static(network, filename, section_line, &n); | |
232 | if (r < 0) | |
d96edb2c | 233 | return log_oom(); |
95b74ef6 | 234 | |
2551b422 | 235 | r = in_addr_prefix_from_string(rvalue, AF_INET6, &a, &prefixlen); |
95b74ef6 | 236 | if (r < 0) { |
2551b422 YW |
237 | log_syntax(unit, LOG_WARNING, filename, line, r, |
238 | "Invalid prefix for address label, ignoring assignment: %s", rvalue); | |
95b74ef6 SS |
239 | return 0; |
240 | } | |
2551b422 YW |
241 | if (in6_addr_is_ipv4_mapped_address(&a.in6) && prefixlen > 96) { |
242 | /* See ip6addrlbl_alloc() in net/ipv6/addrlabel.c of kernel. */ | |
243 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
244 | "The prefix length of IPv4 mapped address for address label must be equal to or smaller than 96, " | |
245 | "ignoring assignment: %s", rvalue); | |
246 | return 0; | |
247 | } | |
248 | ||
834f4294 | 249 | n->prefix = a.in6; |
2551b422 | 250 | n->prefixlen = prefixlen; |
834f4294 | 251 | n->prefix_set = true; |
95b74ef6 | 252 | |
dea161d9 | 253 | TAKE_PTR(n); |
95b74ef6 SS |
254 | return 0; |
255 | } | |
256 | ||
257 | int config_parse_address_label( | |
258 | const char *unit, | |
259 | const char *filename, | |
260 | unsigned line, | |
261 | const char *section, | |
262 | unsigned section_line, | |
263 | const char *lvalue, | |
264 | int ltype, | |
265 | const char *rvalue, | |
266 | void *data, | |
267 | void *userdata) { | |
268 | ||
fcbf4cb7 | 269 | _cleanup_(address_label_free_or_set_invalidp) AddressLabel *n = NULL; |
95b74ef6 SS |
270 | Network *network = userdata; |
271 | uint32_t k; | |
272 | int r; | |
273 | ||
274 | assert(filename); | |
275 | assert(section); | |
276 | assert(lvalue); | |
277 | assert(rvalue); | |
278 | assert(data); | |
279 | ||
280 | r = address_label_new_static(network, filename, section_line, &n); | |
281 | if (r < 0) | |
d96edb2c | 282 | return log_oom(); |
95b74ef6 SS |
283 | |
284 | r = safe_atou32(rvalue, &k); | |
285 | if (r < 0) { | |
d96edb2c | 286 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse address label, ignoring: %s", rvalue); |
95b74ef6 SS |
287 | return 0; |
288 | } | |
289 | ||
834f4294 | 290 | if (k == UINT_MAX) { |
d96edb2c | 291 | log_syntax(unit, LOG_WARNING, filename, line, 0, "Address label is invalid, ignoring: %s", rvalue); |
95b74ef6 SS |
292 | return 0; |
293 | } | |
294 | ||
295 | n->label = k; | |
dea161d9 | 296 | TAKE_PTR(n); |
95b74ef6 SS |
297 | |
298 | return 0; | |
299 | } |