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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
af6f0d42 | 2 | |
01234e1f | 3 | #include <linux/netdevice.h> |
43b3a5ef | 4 | #include <netinet/ether.h> |
a0b191b7 | 5 | #include <unistd.h> |
43b3a5ef | 6 | |
e5eadf53 | 7 | #include "sd-device.h" |
07630cea | 8 | #include "sd-netlink.h" |
af6f0d42 | 9 | |
b5efdb8a | 10 | #include "alloc-util.h" |
07630cea LP |
11 | #include "conf-files.h" |
12 | #include "conf-parser.h" | |
dc0d4078 | 13 | #include "def.h" |
e0e789c1 | 14 | #include "device-private.h" |
b220632c | 15 | #include "device-util.h" |
a5010333 | 16 | #include "ethtool-util.h" |
3ffd4af2 | 17 | #include "fd-util.h" |
07630cea | 18 | #include "link-config.h" |
af6f0d42 | 19 | #include "log.h" |
0a970718 | 20 | #include "memory-util.h" |
7e19cc54 | 21 | #include "net-condition.h" |
b355d0c9 | 22 | #include "netif-naming-scheme.h" |
1c4baffc | 23 | #include "netlink-util.h" |
dc7f6c9b | 24 | #include "network-util.h" |
6bedfcbb | 25 | #include "parse-util.h" |
b0c82192 | 26 | #include "path-lookup.h" |
07630cea | 27 | #include "path-util.h" |
4e731273 | 28 | #include "proc-cmdline.h" |
3df3e884 | 29 | #include "random-util.h" |
8fcde012 | 30 | #include "stat-util.h" |
8b43440b | 31 | #include "string-table.h" |
07630cea LP |
32 | #include "string-util.h" |
33 | #include "strv.h" | |
fc27088a | 34 | #include "utf8.h" |
af6f0d42 | 35 | |
afca7ac1 | 36 | struct LinkConfigContext { |
ce01c07f | 37 | LIST_HEAD(LinkConfig, links); |
a5010333 | 38 | int ethtool_fd; |
f6194225 | 39 | bool enable_name_policy; |
1c4baffc | 40 | sd_netlink *rtnl; |
dc0d4078 | 41 | usec_t network_dirs_ts_usec; |
af6f0d42 TG |
42 | }; |
43 | ||
ce01c07f | 44 | static LinkConfig* link_config_free(LinkConfig *link) { |
9a4b012e | 45 | if (!link) |
75db809a | 46 | return NULL; |
5b9d4dc0 | 47 | |
9a4b012e TG |
48 | free(link->filename); |
49 | ||
5722fb89 | 50 | net_match_clear(&link->match); |
c4f58dea | 51 | condition_free_list(link->conditions); |
9a4b012e TG |
52 | |
53 | free(link->description); | |
54 | free(link->mac); | |
55 | free(link->name_policy); | |
56 | free(link->name); | |
a5053a15 | 57 | strv_free(link->alternative_names); |
ef1d2c07 | 58 | free(link->alternative_names_policy); |
9a4b012e TG |
59 | free(link->alias); |
60 | ||
75db809a | 61 | return mfree(link); |
af6f0d42 TG |
62 | } |
63 | ||
ce01c07f | 64 | DEFINE_TRIVIAL_CLEANUP_FUNC(LinkConfig*, link_config_free); |
9a4b012e | 65 | |
afca7ac1 | 66 | static void link_configs_free(LinkConfigContext *ctx) { |
ce01c07f | 67 | LinkConfig *link, *link_next; |
af6f0d42 TG |
68 | |
69 | if (!ctx) | |
70 | return; | |
71 | ||
9a4b012e TG |
72 | LIST_FOREACH_SAFE(links, link, link_next, ctx->links) |
73 | link_config_free(link); | |
af6f0d42 TG |
74 | } |
75 | ||
afca7ac1 | 76 | LinkConfigContext *link_config_ctx_free(LinkConfigContext *ctx) { |
af6f0d42 | 77 | if (!ctx) |
75db809a | 78 | return NULL; |
af6f0d42 | 79 | |
03e334a1 | 80 | safe_close(ctx->ethtool_fd); |
1c4baffc | 81 | sd_netlink_unref(ctx->rtnl); |
af6f0d42 | 82 | link_configs_free(ctx); |
75db809a | 83 | return mfree(ctx); |
af6f0d42 TG |
84 | } |
85 | ||
afca7ac1 YW |
86 | int link_config_ctx_new(LinkConfigContext **ret) { |
87 | _cleanup_(link_config_ctx_freep) LinkConfigContext *ctx = NULL; | |
9a4b012e TG |
88 | |
89 | if (!ret) | |
90 | return -EINVAL; | |
91 | ||
afca7ac1 | 92 | ctx = new(LinkConfigContext, 1); |
9a4b012e TG |
93 | if (!ctx) |
94 | return -ENOMEM; | |
95 | ||
afca7ac1 YW |
96 | *ctx = (LinkConfigContext) { |
97 | .ethtool_fd = -1, | |
98 | .enable_name_policy = true, | |
99 | }; | |
9a4b012e | 100 | |
1cc6c93a | 101 | *ret = TAKE_PTR(ctx); |
9a4b012e TG |
102 | |
103 | return 0; | |
104 | } | |
105 | ||
afca7ac1 | 106 | int link_load_one(LinkConfigContext *ctx, const char *filename) { |
ce01c07f | 107 | _cleanup_(link_config_freep) LinkConfig *link = NULL; |
6cdab9f1 | 108 | _cleanup_free_ char *name = NULL; |
e406e8a2 | 109 | const char *dropin_dirname; |
79a60834 | 110 | size_t i; |
af6f0d42 TG |
111 | int r; |
112 | ||
187dc6e5 TA |
113 | assert(ctx); |
114 | assert(filename); | |
115 | ||
e8e2788d YW |
116 | r = null_or_empty_path(filename); |
117 | if (r == -ENOENT) | |
118 | return 0; | |
119 | if (r < 0) | |
120 | return r; | |
121 | if (r > 0) { | |
ed88bcfb ZJS |
122 | log_debug("Skipping empty file: %s", filename); |
123 | return 0; | |
124 | } | |
125 | ||
6cdab9f1 YW |
126 | name = strdup(filename); |
127 | if (!name) | |
128 | return -ENOMEM; | |
129 | ||
ce01c07f | 130 | link = new(LinkConfig, 1); |
ecb08ec6 | 131 | if (!link) |
e8a42907 | 132 | return -ENOMEM; |
af6f0d42 | 133 | |
ce01c07f | 134 | *link = (LinkConfig) { |
6cdab9f1 | 135 | .filename = TAKE_PTR(name), |
54ed9f88 | 136 | .mac_address_policy = _MAC_ADDRESS_POLICY_INVALID, |
c50404ae | 137 | .wol = UINT32_MAX, /* UINT32_MAX means do not change WOL setting. */ |
6cdab9f1 YW |
138 | .duplex = _DUP_INVALID, |
139 | .port = _NET_DEV_PORT_INVALID, | |
140 | .autonegotiation = -1, | |
a34811e4 YW |
141 | .rx_flow_control = -1, |
142 | .tx_flow_control = -1, | |
143 | .autoneg_flow_control = -1, | |
ef4a91a7 | 144 | .txqueuelen = UINT32_MAX, |
6cdab9f1 | 145 | }; |
5fde13d7 | 146 | |
79a60834 | 147 | for (i = 0; i < ELEMENTSOF(link->features); i++) |
cc2ff878 | 148 | link->features[i] = -1; |
50725d10 | 149 | |
e406e8a2 YW |
150 | dropin_dirname = strjoina(basename(filename), ".d"); |
151 | r = config_parse_many( | |
152 | STRV_MAKE_CONST(filename), | |
153 | (const char* const*) CONF_PATHS_STRV("systemd/network"), | |
154 | dropin_dirname, | |
155 | "Match\0Link\0", | |
156 | config_item_perf_lookup, link_config_gperf_lookup, | |
157 | CONFIG_PARSE_WARN, link, NULL); | |
36f822c4 | 158 | if (r < 0) |
ecb08ec6 | 159 | return r; |
af6f0d42 | 160 | |
5722fb89 | 161 | if (net_match_is_empty(&link->match) && !link->conditions) { |
dade7349 ZJS |
162 | log_warning("%s: No valid settings found in the [Match] section, ignoring file. " |
163 | "To match all interfaces, add OriginalName=* in the [Match] section.", | |
84ea567e | 164 | filename); |
dade7349 ZJS |
165 | return 0; |
166 | } | |
84ea567e | 167 | |
a0b191b7 | 168 | if (!condition_test_list(link->conditions, environ, NULL, NULL, NULL)) { |
176d9c0e YW |
169 | log_debug("%s: Conditions do not match the system environment, skipping.", filename); |
170 | return 0; | |
171 | } | |
172 | ||
a7a12bf4 YW |
173 | if (IN_SET(link->mac_address_policy, MAC_ADDRESS_POLICY_PERSISTENT, MAC_ADDRESS_POLICY_RANDOM) && link->mac) { |
174 | log_warning("%s: MACAddress= in [Link] section will be ignored when MACAddressPolicy= " | |
175 | "is set to \"persistent\" or \"random\".", | |
176 | filename); | |
177 | link->mac = mfree(link->mac); | |
178 | } | |
179 | ||
6cdab9f1 | 180 | log_debug("Parsed configuration file %s", filename); |
af6f0d42 | 181 | |
4b4a6c9b | 182 | LIST_PREPEND(links, ctx->links, TAKE_PTR(link)); |
af6f0d42 | 183 | return 0; |
af6f0d42 TG |
184 | } |
185 | ||
f6194225 | 186 | static bool enable_name_policy(void) { |
1d84ad94 | 187 | bool b; |
f6194225 | 188 | |
1d84ad94 | 189 | return proc_cmdline_get_bool("net.ifnames", &b) <= 0 || b; |
f6194225 TG |
190 | } |
191 | ||
015b097c | 192 | static int link_unsigned_attribute(sd_device *device, const char *attr, unsigned *type) { |
0b189e8f ZJS |
193 | const char *s; |
194 | int r; | |
195 | ||
015b097c | 196 | r = sd_device_get_sysattr_value(device, attr, &s); |
0b189e8f | 197 | if (r < 0) |
015b097c | 198 | return log_device_debug_errno(device, r, "Failed to query %s: %m", attr); |
0b189e8f ZJS |
199 | |
200 | r = safe_atou(s, type); | |
201 | if (r < 0) | |
015b097c | 202 | return log_device_warning_errno(device, r, "Failed to parse %s \"%s\": %m", attr, s); |
0b189e8f | 203 | |
015b097c | 204 | log_device_debug(device, "Device has %s=%u", attr, *type); |
0b189e8f ZJS |
205 | return 0; |
206 | } | |
207 | ||
afca7ac1 | 208 | int link_config_load(LinkConfigContext *ctx) { |
b9c54c46 | 209 | _cleanup_strv_free_ char **files = NULL; |
edf029b7 | 210 | char **f; |
a39f92d3 | 211 | int r; |
af6f0d42 TG |
212 | |
213 | link_configs_free(ctx); | |
214 | ||
f6194225 TG |
215 | if (!enable_name_policy()) { |
216 | ctx->enable_name_policy = false; | |
3f85ef0f | 217 | log_info("Network interface NamePolicy= disabled on kernel command line, ignoring."); |
f6194225 TG |
218 | } |
219 | ||
97f2d76d | 220 | /* update timestamp */ |
dc0d4078 | 221 | paths_check_timestamp(NETWORK_DIRS, &ctx->network_dirs_ts_usec, true); |
af6f0d42 | 222 | |
dc0d4078 | 223 | r = conf_files_list_strv(&files, ".link", NULL, 0, NETWORK_DIRS); |
f647962d MS |
224 | if (r < 0) |
225 | return log_error_errno(r, "failed to enumerate link files: %m"); | |
af6f0d42 TG |
226 | |
227 | STRV_FOREACH_BACKWARDS(f, files) { | |
a378400b | 228 | r = link_load_one(ctx, *f); |
af6f0d42 | 229 | if (r < 0) |
e8a42907 | 230 | log_error_errno(r, "Failed to load %s, ignoring: %m", *f); |
af6f0d42 TG |
231 | } |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
afca7ac1 | 236 | bool link_config_should_reload(LinkConfigContext *ctx) { |
dc0d4078 | 237 | return paths_check_timestamp(NETWORK_DIRS, &ctx->network_dirs_ts_usec, false); |
af6f0d42 TG |
238 | } |
239 | ||
ce01c07f | 240 | int link_config_get(LinkConfigContext *ctx, sd_device *device, LinkConfig **ret) { |
f5767302 | 241 | unsigned name_assign_type = NET_NAME_UNKNOWN; |
4bb7cc82 | 242 | struct ether_addr permanent_mac = {}; |
f25e642b | 243 | unsigned short iftype; |
ce01c07f | 244 | LinkConfig *link; |
4bb7cc82 | 245 | const char *name; |
70f32a26 | 246 | unsigned flags; |
ef62949a | 247 | int ifindex, r; |
af6f0d42 | 248 | |
3b64e4d4 TG |
249 | assert(ctx); |
250 | assert(device); | |
251 | assert(ret); | |
252 | ||
4bb7cc82 YW |
253 | r = sd_device_get_sysname(device, &name); |
254 | if (r < 0) | |
255 | return r; | |
256 | ||
ef62949a YW |
257 | r = sd_device_get_ifindex(device, &ifindex); |
258 | if (r < 0) | |
259 | return r; | |
260 | ||
70f32a26 | 261 | r = rtnl_get_link_info(&ctx->rtnl, ifindex, &iftype, &flags); |
ef62949a YW |
262 | if (r < 0) |
263 | return r; | |
264 | ||
70f32a26 YW |
265 | /* Do not configure loopback interfaces by .link files. */ |
266 | if (flags & IFF_LOOPBACK) | |
267 | return -ENOENT; | |
268 | ||
4bb7cc82 YW |
269 | r = ethtool_get_permanent_macaddr(&ctx->ethtool_fd, name, &permanent_mac); |
270 | if (r < 0) | |
271 | log_device_debug_errno(device, r, "Failed to get permanent MAC address, ignoring: %m"); | |
272 | ||
f5767302 YW |
273 | (void) link_unsigned_attribute(device, "name_assign_type", &name_assign_type); |
274 | ||
af6f0d42 | 275 | LIST_FOREACH(links, link, ctx->links) { |
1a3caa49 YW |
276 | r = net_match_config(&link->match, device, NULL, &permanent_mac, NULL, iftype, NULL, NULL, 0, NULL, NULL); |
277 | if (r < 0) | |
278 | return r; | |
279 | if (r == 0) | |
280 | continue; | |
281 | ||
282 | if (link->match.ifname && !strv_contains(link->match.ifname, "*") && name_assign_type == NET_NAME_ENUM) | |
283 | log_device_warning(device, "Config file %s is applied to device based on potentially unpredictable interface name.", | |
284 | link->filename); | |
285 | else | |
286 | log_device_debug(device, "Config file %s is applied", link->filename); | |
287 | ||
288 | *ret = link; | |
289 | return 0; | |
af6f0d42 TG |
290 | } |
291 | ||
292 | return -ENOENT; | |
293 | } | |
294 | ||
ce01c07f | 295 | static int link_config_apply_ethtool_settings(int *ethtool_fd, const LinkConfig *config, sd_device *device) { |
2e17fed5 YW |
296 | const char *name; |
297 | int r; | |
298 | ||
299 | assert(ethtool_fd); | |
300 | assert(config); | |
301 | assert(device); | |
302 | ||
303 | r = sd_device_get_sysname(device, &name); | |
304 | if (r < 0) | |
305 | return log_device_error_errno(device, r, "Failed to get sysname: %m"); | |
306 | ||
307 | r = ethtool_set_glinksettings(ethtool_fd, name, | |
308 | config->autonegotiation, config->advertise, | |
309 | config->speed, config->duplex, config->port); | |
310 | if (r < 0) { | |
a7994dd3 YW |
311 | if (config->autonegotiation >= 0) |
312 | log_device_warning_errno(device, r, "Could not %s auto negotiation, ignoring: %m", | |
313 | enable_disable(config->autonegotiation)); | |
2e17fed5 YW |
314 | |
315 | if (!eqzero(config->advertise)) | |
a7994dd3 YW |
316 | log_device_warning_errno(device, r, "Could not set advertise mode, ignoring: %m"); |
317 | ||
318 | if (config->speed > 0) | |
319 | log_device_warning_errno(device, r, "Could not set speed to %"PRIu64"Mbps, ignoring: %m", | |
320 | DIV_ROUND_UP(config->speed, 1000000)); | |
321 | ||
322 | if (config->duplex >= 0) | |
323 | log_device_warning_errno(device, r, "Could not set duplex to %s, ignoring: %m", | |
324 | duplex_to_string(config->duplex)); | |
325 | ||
326 | if (config->port >= 0) | |
327 | log_device_warning_errno(device, r, "Could not set port to '%s', ignoring: %m", | |
328 | port_to_string(config->port)); | |
2e17fed5 YW |
329 | } |
330 | ||
331 | r = ethtool_set_wol(ethtool_fd, name, config->wol); | |
c50404ae YW |
332 | if (r < 0) { |
333 | _cleanup_free_ char *str = NULL; | |
334 | ||
335 | (void) wol_options_to_string_alloc(config->wol, &str); | |
a7994dd3 | 336 | log_device_warning_errno(device, r, "Could not set WakeOnLan to %s, ignoring: %m", |
c50404ae YW |
337 | strna(str)); |
338 | } | |
2e17fed5 YW |
339 | |
340 | r = ethtool_set_features(ethtool_fd, name, config->features); | |
341 | if (r < 0) | |
342 | log_device_warning_errno(device, r, "Could not set offload features, ignoring: %m"); | |
343 | ||
80662eec YW |
344 | r = ethtool_set_channels(ethtool_fd, name, &config->channels); |
345 | if (r < 0) | |
346 | log_device_warning_errno(device, r, "Could not set channels, ignoring: %m"); | |
2e17fed5 | 347 | |
80662eec YW |
348 | r = ethtool_set_nic_buffer_size(ethtool_fd, name, &config->ring); |
349 | if (r < 0) | |
350 | log_device_warning_errno(device, r, "Could not set ring buffer, ignoring: %m"); | |
2e17fed5 | 351 | |
80662eec YW |
352 | r = ethtool_set_flow_control(ethtool_fd, name, config->rx_flow_control, config->tx_flow_control, config->autoneg_flow_control); |
353 | if (r < 0) | |
354 | log_device_warning_errno(device, r, "Could not set flow control, ignoring: %m"); | |
2e17fed5 | 355 | |
6c35ea5e DDM |
356 | r = ethtool_set_nic_coalesce_settings(ethtool_fd, name, &config->coalesce); |
357 | if (r < 0) | |
358 | log_device_warning_errno(device, r, "Could not set coalesce settings, ignoring: %m"); | |
359 | ||
2e17fed5 YW |
360 | return 0; |
361 | } | |
362 | ||
54ed9f88 | 363 | static int get_mac(sd_device *device, MACAddressPolicy policy, struct ether_addr *mac) { |
015b097c | 364 | unsigned addr_type; |
54ed9f88 | 365 | bool want_random = policy == MAC_ADDRESS_POLICY_RANDOM; |
f1ac7002 | 366 | int r; |
16b9b87a | 367 | |
54ed9f88 | 368 | assert(IN_SET(policy, MAC_ADDRESS_POLICY_RANDOM, MAC_ADDRESS_POLICY_PERSISTENT)); |
3c9b8860 | 369 | |
015b097c | 370 | r = link_unsigned_attribute(device, "addr_assign_type", &addr_type); |
f1ac7002 | 371 | if (r < 0) |
015b097c ZJS |
372 | return r; |
373 | switch (addr_type) { | |
374 | case NET_ADDR_SET: | |
9d9fed9e ZJS |
375 | log_device_debug(device, "MAC on the device already set by userspace"); |
376 | return 0; | |
015b097c | 377 | case NET_ADDR_STOLEN: |
9d9fed9e ZJS |
378 | log_device_debug(device, "MAC on the device already set based on another device"); |
379 | return 0; | |
015b097c ZJS |
380 | case NET_ADDR_RANDOM: |
381 | case NET_ADDR_PERM: | |
382 | break; | |
383 | default: | |
09c69eca YW |
384 | log_device_warning(device, "Unknown addr_assign_type %u, ignoring", addr_type); |
385 | return 0; | |
015b097c | 386 | } |
04b67d49 | 387 | |
9d9fed9e ZJS |
388 | if (want_random == (addr_type == NET_ADDR_RANDOM)) { |
389 | log_device_debug(device, "MAC on the device already matches policy *%s*", | |
390 | mac_address_policy_to_string(policy)); | |
391 | return 0; | |
392 | } | |
16b9b87a | 393 | |
015b097c ZJS |
394 | if (want_random) { |
395 | log_device_debug(device, "Using random bytes to generate MAC"); | |
550c8784 LP |
396 | |
397 | /* We require genuine randomness here, since we want to make sure we won't collide with other | |
398 | * systems booting up at the very same time. We do allow RDRAND however, since this is not | |
399 | * cryptographic key material. */ | |
a745117d LP |
400 | r = genuine_random_bytes(mac->ether_addr_octet, ETH_ALEN, RANDOM_ALLOW_RDRAND); |
401 | if (r < 0) | |
402 | return log_device_error_errno(device, r, "Failed to acquire random data to generate MAC: %m"); | |
015b097c | 403 | } else { |
dbe81cbd | 404 | uint64_t result; |
9bf3b535 | 405 | |
96848152 ZJS |
406 | r = net_get_unique_predictable_data(device, |
407 | naming_scheme_has(NAMING_STABLE_VIRTUAL_MACS), | |
408 | &result); | |
16b9b87a | 409 | if (r < 0) |
015b097c | 410 | return log_device_warning_errno(device, r, "Could not generate persistent MAC: %m"); |
16b9b87a | 411 | |
96848152 | 412 | log_device_debug(device, "Using generated persistent MAC address"); |
9bf3b535 | 413 | assert_cc(ETH_ALEN <= sizeof(result)); |
dbe81cbd | 414 | memcpy(mac->ether_addr_octet, &result, ETH_ALEN); |
16b9b87a TG |
415 | } |
416 | ||
417 | /* see eth_random_addr in the kernel */ | |
3c9b8860 TG |
418 | mac->ether_addr_octet[0] &= 0xfe; /* clear multicast bit */ |
419 | mac->ether_addr_octet[0] |= 0x02; /* set local assignment bit (IEEE802) */ | |
015b097c | 420 | return 1; |
16b9b87a TG |
421 | } |
422 | ||
ce01c07f | 423 | static int link_config_apply_rtnl_settings(sd_netlink **rtnl, const LinkConfig *config, sd_device *device) { |
2e17fed5 YW |
424 | struct ether_addr generated_mac, *mac = NULL; |
425 | int ifindex, r; | |
af6f0d42 | 426 | |
2e17fed5 | 427 | assert(rtnl); |
3e137a1b TG |
428 | assert(config); |
429 | assert(device); | |
3e137a1b | 430 | |
2e17fed5 | 431 | r = sd_device_get_ifindex(device, &ifindex); |
e5eadf53 | 432 | if (r < 0) |
2e17fed5 | 433 | return log_device_error_errno(device, r, "Could not find ifindex: %m"); |
af6f0d42 | 434 | |
2e17fed5 YW |
435 | if (IN_SET(config->mac_address_policy, MAC_ADDRESS_POLICY_PERSISTENT, MAC_ADDRESS_POLICY_RANDOM)) { |
436 | if (get_mac(device, config->mac_address_policy, &generated_mac) > 0) | |
437 | mac = &generated_mac; | |
438 | } else | |
439 | mac = config->mac; | |
af6f0d42 | 440 | |
face9fcc YW |
441 | r = rtnl_set_link_properties(rtnl, ifindex, config->alias, mac, |
442 | config->txqueues, config->rxqueues, config->txqueuelen, | |
443 | config->mtu, config->gso_max_size, config->gso_max_segments); | |
50725d10 | 444 | if (r < 0) |
face9fcc YW |
445 | log_device_warning_errno(device, r, |
446 | "Could not set Alias=, MACAddress=, " | |
447 | "TransmitQueues=, ReceiveQueues=, TransmitQueueLength=, MTU=, " | |
448 | "GenericSegmentOffloadMaxBytes= or GenericSegmentOffloadMaxSegments=, " | |
449 | "ignoring: %m"); | |
50725d10 | 450 | |
2e17fed5 YW |
451 | return 0; |
452 | } | |
224ded67 | 453 | |
ce01c07f | 454 | static int link_config_generate_new_name(const LinkConfigContext *ctx, const LinkConfig *config, sd_device *device, const char **ret_name) { |
2e17fed5 | 455 | unsigned name_type = NET_NAME_UNKNOWN; |
2e17fed5 | 456 | int r; |
a34811e4 | 457 | |
2e17fed5 YW |
458 | assert(ctx); |
459 | assert(config); | |
460 | assert(device); | |
461 | assert(ret_name); | |
43b3a5ef | 462 | |
015b097c | 463 | (void) link_unsigned_attribute(device, "name_assign_type", &name_type); |
0b189e8f | 464 | |
73d2bb08 ZJS |
465 | if (IN_SET(name_type, NET_NAME_USER, NET_NAME_RENAMED) |
466 | && !naming_scheme_has(NAMING_ALLOW_RERENAMES)) { | |
467 | log_device_debug(device, "Device already has a name given by userspace, not renaming."); | |
468 | goto no_rename; | |
469 | } | |
470 | ||
0b189e8f | 471 | if (ctx->enable_name_policy && config->name_policy) |
78f8849f | 472 | for (NamePolicy *p = config->name_policy; *p != _NAMEPOLICY_INVALID; p++) { |
5cdb3f70 YW |
473 | const char *new_name = NULL; |
474 | NamePolicy policy = *p; | |
0b189e8f ZJS |
475 | |
476 | switch (policy) { | |
477 | case NAMEPOLICY_KERNEL: | |
478 | if (name_type != NET_NAME_PREDICTABLE) | |
479 | continue; | |
480 | ||
481 | /* The kernel claims to have given a predictable name, keep it. */ | |
482 | log_device_debug(device, "Policy *%s*: keeping predictable kernel name", | |
483 | name_policy_to_string(policy)); | |
484 | goto no_rename; | |
3907446f ZJS |
485 | case NAMEPOLICY_KEEP: |
486 | if (!IN_SET(name_type, NET_NAME_USER, NET_NAME_RENAMED)) | |
487 | continue; | |
488 | ||
489 | log_device_debug(device, "Policy *%s*: keeping existing userspace name", | |
490 | name_policy_to_string(policy)); | |
491 | goto no_rename; | |
0b189e8f ZJS |
492 | case NAMEPOLICY_DATABASE: |
493 | (void) sd_device_get_property_value(device, "ID_NET_NAME_FROM_DATABASE", &new_name); | |
494 | break; | |
495 | case NAMEPOLICY_ONBOARD: | |
496 | (void) sd_device_get_property_value(device, "ID_NET_NAME_ONBOARD", &new_name); | |
497 | break; | |
498 | case NAMEPOLICY_SLOT: | |
499 | (void) sd_device_get_property_value(device, "ID_NET_NAME_SLOT", &new_name); | |
500 | break; | |
501 | case NAMEPOLICY_PATH: | |
502 | (void) sd_device_get_property_value(device, "ID_NET_NAME_PATH", &new_name); | |
503 | break; | |
504 | case NAMEPOLICY_MAC: | |
505 | (void) sd_device_get_property_value(device, "ID_NET_NAME_MAC", &new_name); | |
506 | break; | |
507 | default: | |
04499a70 | 508 | assert_not_reached(); |
5fde13d7 | 509 | } |
5cdb3f70 YW |
510 | if (ifname_valid(new_name)) { |
511 | log_device_debug(device, "Policy *%s* yields \"%s\".", name_policy_to_string(policy), new_name); | |
512 | *ret_name = new_name; | |
513 | return 0; | |
514 | } | |
daeb71a3 | 515 | } |
daeb71a3 | 516 | |
2e17fed5 YW |
517 | if (config->name) { |
518 | log_device_debug(device, "Policies didn't yield a name, using specified Name=%s.", config->name); | |
519 | *ret_name = config->name; | |
520 | return 0; | |
521 | } | |
16b9b87a | 522 | |
2e17fed5 YW |
523 | log_device_debug(device, "Policies didn't yield a name and Name= is not given, not renaming."); |
524 | no_rename: | |
525 | r = sd_device_get_sysname(device, ret_name); | |
f647962d | 526 | if (r < 0) |
2e17fed5 YW |
527 | return log_device_error_errno(device, r, "Failed to get sysname: %m"); |
528 | ||
529 | return 0; | |
530 | } | |
531 | ||
ce01c07f | 532 | static int link_config_apply_alternative_names(sd_netlink **rtnl, const LinkConfig *config, sd_device *device, const char *new_name) { |
2e17fed5 YW |
533 | _cleanup_strv_free_ char **altnames = NULL, **current_altnames = NULL; |
534 | const char *current_name; | |
535 | int ifindex, r; | |
536 | ||
537 | assert(rtnl); | |
538 | assert(config); | |
539 | assert(device); | |
540 | ||
541 | r = sd_device_get_sysname(device, ¤t_name); | |
542 | if (r < 0) | |
543 | return log_device_error_errno(device, r, "Failed to get sysname: %m"); | |
544 | ||
545 | r = sd_device_get_ifindex(device, &ifindex); | |
546 | if (r < 0) | |
547 | return log_device_error_errno(device, r, "Could not find ifindex: %m"); | |
43b3a5ef | 548 | |
ef1d2c07 YW |
549 | if (config->alternative_names) { |
550 | altnames = strv_copy(config->alternative_names); | |
551 | if (!altnames) | |
552 | return log_oom(); | |
553 | } | |
554 | ||
555 | if (config->alternative_names_policy) | |
556 | for (NamePolicy *p = config->alternative_names_policy; *p != _NAMEPOLICY_INVALID; p++) { | |
61fd7d67 | 557 | const char *n = NULL; |
ef1d2c07 YW |
558 | |
559 | switch (*p) { | |
560 | case NAMEPOLICY_DATABASE: | |
561 | (void) sd_device_get_property_value(device, "ID_NET_NAME_FROM_DATABASE", &n); | |
562 | break; | |
563 | case NAMEPOLICY_ONBOARD: | |
564 | (void) sd_device_get_property_value(device, "ID_NET_NAME_ONBOARD", &n); | |
565 | break; | |
566 | case NAMEPOLICY_SLOT: | |
567 | (void) sd_device_get_property_value(device, "ID_NET_NAME_SLOT", &n); | |
568 | break; | |
569 | case NAMEPOLICY_PATH: | |
570 | (void) sd_device_get_property_value(device, "ID_NET_NAME_PATH", &n); | |
571 | break; | |
572 | case NAMEPOLICY_MAC: | |
573 | (void) sd_device_get_property_value(device, "ID_NET_NAME_MAC", &n); | |
574 | break; | |
575 | default: | |
04499a70 | 576 | assert_not_reached(); |
ef1d2c07 YW |
577 | } |
578 | if (!isempty(n)) { | |
579 | r = strv_extend(&altnames, n); | |
580 | if (r < 0) | |
581 | return log_oom(); | |
582 | } | |
583 | } | |
584 | ||
585 | if (new_name) | |
586 | strv_remove(altnames, new_name); | |
2e17fed5 | 587 | strv_remove(altnames, current_name); |
97fdae33 | 588 | |
2e17fed5 | 589 | r = rtnl_get_link_alternative_names(rtnl, ifindex, ¤t_altnames); |
97fdae33 | 590 | if (r < 0) |
2e17fed5 | 591 | log_device_debug_errno(device, r, "Failed to get alternative names, ignoring: %m"); |
97fdae33 YW |
592 | |
593 | char **p; | |
594 | STRV_FOREACH(p, current_altnames) | |
595 | strv_remove(altnames, *p); | |
596 | ||
ef1d2c07 | 597 | strv_uniq(altnames); |
4d016e96 | 598 | strv_sort(altnames); |
2e17fed5 YW |
599 | r = rtnl_set_link_alternative_names(rtnl, ifindex, altnames); |
600 | if (r < 0) | |
601 | log_device_full_errno(device, r == -EOPNOTSUPP ? LOG_DEBUG : LOG_WARNING, r, | |
602 | "Could not set AlternativeName= or apply AlternativeNamesPolicy=, ignoring: %m"); | |
603 | ||
604 | return 0; | |
605 | } | |
a5053a15 | 606 | |
ce01c07f | 607 | int link_config_apply(LinkConfigContext *ctx, const LinkConfig *config, sd_device *device, const char **ret_name) { |
2e17fed5 | 608 | const char *new_name; |
a1130022 | 609 | sd_device_action_t a; |
2e17fed5 YW |
610 | int r; |
611 | ||
612 | assert(ctx); | |
613 | assert(config); | |
614 | assert(device); | |
615 | assert(ret_name); | |
616 | ||
a1130022 | 617 | r = sd_device_get_action(device, &a); |
e0e789c1 YW |
618 | if (r < 0) |
619 | return log_device_error_errno(device, r, "Failed to get ACTION= property: %m"); | |
620 | ||
a1130022 | 621 | if (!IN_SET(a, SD_DEVICE_ADD, SD_DEVICE_BIND, SD_DEVICE_MOVE)) { |
e0e789c1 YW |
622 | log_device_debug(device, "Skipping to apply .link settings on '%s' uevent.", device_action_to_string(a)); |
623 | ||
624 | r = sd_device_get_sysname(device, ret_name); | |
625 | if (r < 0) | |
626 | return log_device_error_errno(device, r, "Failed to get sysname: %m"); | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
2e17fed5 YW |
631 | r = link_config_apply_ethtool_settings(&ctx->ethtool_fd, config, device); |
632 | if (r < 0) | |
633 | return r; | |
634 | ||
635 | r = link_config_apply_rtnl_settings(&ctx->rtnl, config, device); | |
636 | if (r < 0) | |
637 | return r; | |
638 | ||
a1130022 | 639 | if (a == SD_DEVICE_MOVE) { |
e0e789c1 YW |
640 | log_device_debug(device, "Skipping to apply Name= and NamePolicy= on '%s' uevent.", device_action_to_string(a)); |
641 | ||
642 | r = sd_device_get_sysname(device, &new_name); | |
643 | if (r < 0) | |
644 | return log_device_error_errno(device, r, "Failed to get sysname: %m"); | |
645 | } else { | |
646 | r = link_config_generate_new_name(ctx, config, device, &new_name); | |
647 | if (r < 0) | |
648 | return r; | |
649 | } | |
2e17fed5 YW |
650 | |
651 | r = link_config_apply_alternative_names(&ctx->rtnl, config, device, new_name); | |
652 | if (r < 0) | |
653 | return r; | |
d95b83b8 | 654 | |
2e17fed5 | 655 | *ret_name = new_name; |
af6f0d42 TG |
656 | return 0; |
657 | } | |
be32eb9b | 658 | |
afca7ac1 | 659 | int link_get_driver(LinkConfigContext *ctx, sd_device *device, char **ret) { |
847a8a5f | 660 | const char *name; |
a7f7d1bd | 661 | char *driver = NULL; |
847a8a5f TG |
662 | int r; |
663 | ||
e5eadf53 YW |
664 | r = sd_device_get_sysname(device, &name); |
665 | if (r < 0) | |
666 | return r; | |
847a8a5f | 667 | |
aedca892 | 668 | r = ethtool_get_driver(&ctx->ethtool_fd, name, &driver); |
847a8a5f TG |
669 | if (r < 0) |
670 | return r; | |
671 | ||
672 | *ret = driver; | |
673 | return 0; | |
674 | } | |
675 | ||
fc27088a YW |
676 | int config_parse_ifalias( |
677 | const char *unit, | |
678 | const char *filename, | |
679 | unsigned line, | |
680 | const char *section, | |
681 | unsigned section_line, | |
682 | const char *lvalue, | |
683 | int ltype, | |
684 | const char *rvalue, | |
685 | void *data, | |
686 | void *userdata) { | |
687 | ||
688 | char **s = data; | |
689 | ||
690 | assert(filename); | |
691 | assert(lvalue); | |
692 | assert(rvalue); | |
693 | assert(data); | |
694 | ||
695 | if (!isempty(rvalue)) { | |
696 | *s = mfree(*s); | |
697 | return 0; | |
698 | } | |
699 | ||
700 | if (!ascii_is_valid(rvalue)) { | |
701 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
702 | "Interface alias is not ASCII clean, ignoring assignment: %s", rvalue); | |
703 | return 0; | |
704 | } | |
705 | ||
706 | if (strlen(rvalue) >= IFALIASZ) { | |
707 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
708 | "Interface alias is too long, ignoring assignment: %s", rvalue); | |
709 | return 0; | |
710 | } | |
711 | ||
b3f9c17a | 712 | return free_and_strdup_warn(s, rvalue); |
fc27088a YW |
713 | } |
714 | ||
face9fcc YW |
715 | int config_parse_rx_tx_queues( |
716 | const char *unit, | |
717 | const char *filename, | |
718 | unsigned line, | |
719 | const char *section, | |
720 | unsigned section_line, | |
721 | const char *lvalue, | |
722 | int ltype, | |
723 | const char *rvalue, | |
724 | void *data, | |
725 | void *userdata) { | |
726 | ||
727 | uint32_t k, *v = data; | |
728 | int r; | |
729 | ||
730 | if (isempty(rvalue)) { | |
731 | *v = 0; | |
732 | return 0; | |
733 | } | |
734 | ||
735 | r = safe_atou32(rvalue, &k); | |
736 | if (r < 0) { | |
737 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s=, ignoring assignment: %s.", lvalue, rvalue); | |
738 | return 0; | |
739 | } | |
740 | if (k == 0 || k > 4096) { | |
741 | log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid %s=, ignoring assignment: %s.", lvalue, rvalue); | |
742 | return 0; | |
743 | } | |
744 | ||
745 | *v = k; | |
746 | return 0; | |
747 | } | |
748 | ||
ef4a91a7 UÖ |
749 | int config_parse_txqueuelen( |
750 | const char *unit, | |
751 | const char *filename, | |
752 | unsigned line, | |
753 | const char *section, | |
754 | unsigned section_line, | |
755 | const char *lvalue, | |
756 | int ltype, | |
757 | const char *rvalue, | |
758 | void *data, | |
759 | void *userdata) { | |
760 | ||
761 | uint32_t k, *v = data; | |
762 | int r; | |
763 | ||
764 | if (isempty(rvalue)) { | |
765 | *v = UINT32_MAX; | |
766 | return 0; | |
767 | } | |
768 | ||
769 | r = safe_atou32(rvalue, &k); | |
770 | if (r < 0) { | |
771 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s=, ignoring assignment: %s.", lvalue, rvalue); | |
772 | return 0; | |
773 | } | |
774 | if (k == UINT32_MAX) { | |
775 | log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid %s=, ignoring assignment: %s.", lvalue, rvalue); | |
776 | return 0; | |
777 | } | |
778 | ||
779 | *v = k; | |
780 | return 0; | |
781 | } | |
782 | ||
54ed9f88 ZJS |
783 | static const char* const mac_address_policy_table[_MAC_ADDRESS_POLICY_MAX] = { |
784 | [MAC_ADDRESS_POLICY_PERSISTENT] = "persistent", | |
785 | [MAC_ADDRESS_POLICY_RANDOM] = "random", | |
786 | [MAC_ADDRESS_POLICY_NONE] = "none", | |
be32eb9b TG |
787 | }; |
788 | ||
54ed9f88 | 789 | DEFINE_STRING_TABLE_LOOKUP(mac_address_policy, MACAddressPolicy); |
d03cb6b8 YW |
790 | DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT( |
791 | config_parse_mac_address_policy, | |
792 | mac_address_policy, | |
793 | MACAddressPolicy, | |
794 | MAC_ADDRESS_POLICY_NONE, | |
795 | "Failed to parse MAC address policy"); | |
be32eb9b | 796 | |
2c5859af | 797 | static const char* const name_policy_table[_NAMEPOLICY_MAX] = { |
04b67d49 | 798 | [NAMEPOLICY_KERNEL] = "kernel", |
3907446f | 799 | [NAMEPOLICY_KEEP] = "keep", |
e51660ae | 800 | [NAMEPOLICY_DATABASE] = "database", |
be32eb9b TG |
801 | [NAMEPOLICY_ONBOARD] = "onboard", |
802 | [NAMEPOLICY_SLOT] = "slot", | |
803 | [NAMEPOLICY_PATH] = "path", | |
3907446f | 804 | [NAMEPOLICY_MAC] = "mac", |
be32eb9b TG |
805 | }; |
806 | ||
807 | DEFINE_STRING_TABLE_LOOKUP(name_policy, NamePolicy); | |
464cf22f TG |
808 | DEFINE_CONFIG_PARSE_ENUMV(config_parse_name_policy, name_policy, NamePolicy, |
809 | _NAMEPOLICY_INVALID, | |
810 | "Failed to parse interface name policy"); | |
ef1d2c07 YW |
811 | |
812 | static const char* const alternative_names_policy_table[_NAMEPOLICY_MAX] = { | |
813 | [NAMEPOLICY_DATABASE] = "database", | |
814 | [NAMEPOLICY_ONBOARD] = "onboard", | |
815 | [NAMEPOLICY_SLOT] = "slot", | |
816 | [NAMEPOLICY_PATH] = "path", | |
817 | [NAMEPOLICY_MAC] = "mac", | |
818 | }; | |
819 | ||
820 | DEFINE_STRING_TABLE_LOOKUP(alternative_names_policy, NamePolicy); | |
821 | DEFINE_CONFIG_PARSE_ENUMV(config_parse_alternative_names_policy, alternative_names_policy, NamePolicy, | |
822 | _NAMEPOLICY_INVALID, | |
823 | "Failed to parse alternative names policy"); |