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a660c63c KS |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2012 Kay Sievers <kay@vrfy.org> | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
d23965a6 | 20 | /* |
ad37f393 | 21 | * Predictable network interface device names based on: |
472780d8 KS |
22 | * - firmware/bios-provided index numbers for on-board devices |
23 | * - firmware-provided pci-express hotplug slot index number | |
24 | * - physical/geographical location of the hardware | |
25 | * - the interface's MAC address | |
26 | * | |
ad37f393 | 27 | * Two character prefixes based on the type of interface: |
0035597a KS |
28 | * en -- ethernet |
29 | * wl -- wlan | |
30 | * ww -- wwan | |
d23965a6 | 31 | * |
ad37f393 | 32 | * Type of names: |
1328f66a KS |
33 | * o<index> -- on-board device index number |
34 | * s<slot>[f<function>][d<dev_id>] -- hotplug slot index number | |
35 | * x<MAC> -- MAC address | |
36 | * p<bus>s<slot>[f<function>][d<dev_id>] -- PCI geographical location | |
37 | * p<bus>s<slot>[f<function>][u<port>][..][c<config>][i<interface>] | |
38 | * -- USB port number chain | |
472780d8 | 39 | * |
ad37f393 | 40 | * All multi-function PCI devices will carry the [f<function>] number in the |
472780d8 | 41 | * device name, including the function 0 device. |
d23965a6 | 42 | * |
0d6ce923 KS |
43 | * For USB devices the full chain of port numbers of hubs is composed. If the |
44 | * name gets longer than the maximum number of 15 characters, the name is not | |
45 | * exported. | |
46 | * The usual USB configuration == 1 and interface == 0 values are suppressed. | |
ad37f393 | 47 | * |
decd634e | 48 | * PCI ethernet card with firmware index "1": |
0035597a | 49 | * ID_NET_NAME_ONBOARD=eno1 |
f610d6de KS |
50 | * ID_NET_NAME_ONBOARD_LABEL=Ethernet Port 1 |
51 | * | |
ad37f393 | 52 | * PCI ethernet card in hotplug slot with firmware index number: |
f610d6de KS |
53 | * /sys/devices/pci0000:00/0000:00:1c.3/0000:05:00.0/net/ens1 |
54 | * ID_NET_NAME_MAC=enx000000000466 | |
55 | * ID_NET_NAME_PATH=enp5s0 | |
de892aea | 56 | * ID_NET_NAME_SLOT=ens1 |
f610d6de | 57 | * |
decd634e KS |
58 | * PCI ethernet multi-function card with 2 ports: |
59 | * /sys/devices/pci0000:00/0000:00:1c.0/0000:02:00.0/net/enp2s0f0 | |
60 | * ID_NET_NAME_MAC=enx78e7d1ea46da | |
61 | * ID_NET_NAME_PATH=enp2s0f0 | |
62 | * /sys/devices/pci0000:00/0000:00:1c.0/0000:02:00.1/net/enp2s0f1 | |
63 | * ID_NET_NAME_MAC=enx78e7d1ea46dc | |
64 | * ID_NET_NAME_PATH=enp2s0f1 | |
65 | * | |
f610d6de KS |
66 | * PCI wlan card: |
67 | * /sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/net/wlp3s0 | |
68 | * ID_NET_NAME_MAC=wlx0024d7e31130 | |
69 | * ID_NET_NAME_PATH=wlp3s0 | |
70 | * | |
71 | * USB built-in 3G modem: | |
72 | * /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.6/net/wwp0s29u1u4i6 | |
73 | * ID_NET_NAME_MAC=wwx028037ec0200 | |
74 | * ID_NET_NAME_PATH=wwp0s29u1u4i6 | |
75 | * | |
76 | * USB Android phone: | |
77 | * /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/net/enp0s29u1u2 | |
78 | * ID_NET_NAME_MAC=enxd626b3450fb5 | |
79 | * ID_NET_NAME_PATH=enp0s29u1u2 | |
d23965a6 KS |
80 | */ |
81 | ||
a660c63c KS |
82 | #include <stdio.h> |
83 | #include <stdlib.h> | |
84 | #include <stdarg.h> | |
85 | #include <unistd.h> | |
86 | #include <string.h> | |
87 | #include <errno.h> | |
02609440 | 88 | #include <net/if.h> |
de892aea | 89 | #include <linux/pci_regs.h> |
a660c63c KS |
90 | |
91 | #include "udev.h" | |
92 | ||
02609440 KS |
93 | enum netname_type{ |
94 | NET_UNDEF, | |
95 | NET_PCI, | |
96 | NET_USB, | |
984c4348 | 97 | NET_BCMA, |
02609440 KS |
98 | }; |
99 | ||
100 | struct netnames { | |
101 | enum netname_type type; | |
102 | ||
103 | uint8_t mac[6]; | |
104 | bool mac_valid; | |
105 | ||
106 | struct udev_device *pcidev; | |
107 | char pci_slot[IFNAMSIZ]; | |
108 | char pci_path[IFNAMSIZ]; | |
109 | char pci_onboard[IFNAMSIZ]; | |
110 | const char *pci_onboard_label; | |
111 | ||
02609440 | 112 | char usb_ports[IFNAMSIZ]; |
984c4348 KS |
113 | |
114 | char bcma_core[IFNAMSIZ]; | |
02609440 KS |
115 | }; |
116 | ||
0035597a | 117 | /* retrieve on-board index number and label from firmware */ |
02609440 | 118 | static int dev_pci_onboard(struct udev_device *dev, struct netnames *names) { |
d23965a6 | 119 | const char *index; |
0035597a | 120 | int idx; |
a660c63c | 121 | |
0035597a | 122 | /* ACPI _DSM -- device specific method for naming a PCI or PCI Express device */ |
02609440 | 123 | index = udev_device_get_sysattr_value(names->pcidev, "acpi_index"); |
01d183dd KS |
124 | /* SMBIOS type 41 -- Onboard Devices Extended Information */ |
125 | if (!index) | |
02609440 | 126 | index = udev_device_get_sysattr_value(names->pcidev, "index"); |
0035597a KS |
127 | if (!index) |
128 | return -ENOENT; | |
129 | idx = strtoul(index, NULL, 0); | |
130 | if (idx <= 0) | |
131 | return -EINVAL; | |
02609440 | 132 | snprintf(names->pci_onboard, sizeof(names->pci_onboard), "o%d", idx); |
d23965a6 | 133 | |
02609440 | 134 | names->pci_onboard_label = udev_device_get_sysattr_value(names->pcidev, "label"); |
0035597a KS |
135 | return 0; |
136 | } | |
d23965a6 | 137 | |
137661d8 | 138 | /* read the 256 bytes PCI configuration space to check the multi-function bit */ |
1328f66a | 139 | static bool is_pci_multifunction(struct udev_device *dev) { |
de892aea | 140 | char filename[256]; |
3c123e08 | 141 | FILE *f = NULL; |
02609440 | 142 | char config[64]; |
1328f66a | 143 | bool multi = false; |
de892aea KS |
144 | |
145 | snprintf(filename, sizeof(filename), "%s/config", udev_device_get_syspath(dev)); | |
146 | f = fopen(filename, "re"); | |
147 | if (!f) | |
148 | goto out; | |
149 | if (fread(&config, sizeof(config), 1, f) != 1) | |
150 | goto out; | |
151 | ||
152 | /* bit 0-6 header type, bit 7 multi/single function device */ | |
1328f66a KS |
153 | if ((config[PCI_HEADER_TYPE] & 0x80) != 0) |
154 | multi = true; | |
de892aea | 155 | out: |
3c123e08 LN |
156 | if(f) |
157 | fclose(f); | |
1328f66a | 158 | return multi; |
de892aea KS |
159 | } |
160 | ||
02609440 KS |
161 | static int dev_pci_slot(struct udev_device *dev, struct netnames *names) { |
162 | struct udev *udev = udev_device_get_udev(names->pcidev); | |
0035597a KS |
163 | unsigned int bus; |
164 | unsigned int slot; | |
165 | unsigned int func; | |
1328f66a KS |
166 | unsigned int dev_id = 0; |
167 | size_t l; | |
168 | char *s; | |
169 | const char *attr; | |
0035597a KS |
170 | struct udev_device *pci = NULL; |
171 | char slots[256]; | |
172 | DIR *dir; | |
173 | struct dirent *dent; | |
174 | char str[256]; | |
175 | int hotplug_slot = 0; | |
176 | int err = 0; | |
177 | ||
02609440 | 178 | if (sscanf(udev_device_get_sysname(names->pcidev), "0000:%x:%x.%d", &bus, &slot, &func) != 3) |
0035597a | 179 | return -ENOENT; |
1328f66a KS |
180 | |
181 | /* kernel provided multi-device index */ | |
182 | attr = udev_device_get_sysattr_value(dev, "dev_id"); | |
183 | if (attr) | |
184 | dev_id = strtol(attr, NULL, 16); | |
185 | ||
186 | /* compose a name based on the raw kernel's PCI bus, slot numbers */ | |
187 | s = names->pci_path; | |
d5a89d7d | 188 | l = strpcpyf(&s, sizeof(names->pci_path), "p%ds%d", bus, slot); |
1328f66a | 189 | if (func > 0 || is_pci_multifunction(names->pcidev)) |
d5a89d7d | 190 | l = strpcpyf(&s, l, "f%d", func); |
1328f66a | 191 | if (dev_id > 0) |
d5a89d7d | 192 | l = strpcpyf(&s, l, "d%d", dev_id); |
1328f66a KS |
193 | if (l == 0) |
194 | names->pci_path[0] = '\0'; | |
d23965a6 | 195 | |
0035597a KS |
196 | /* ACPI _SUN -- slot user number */ |
197 | pci = udev_device_new_from_subsystem_sysname(udev, "subsystem", "pci"); | |
198 | if (!pci) { | |
199 | err = -ENOENT; | |
200 | goto out; | |
201 | } | |
202 | snprintf(slots, sizeof(slots), "%s/slots", udev_device_get_syspath(pci)); | |
203 | dir = opendir(slots); | |
204 | if (!dir) { | |
205 | err = -errno; | |
206 | goto out; | |
d23965a6 KS |
207 | } |
208 | ||
0035597a KS |
209 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { |
210 | int i; | |
211 | char *rest; | |
212 | char *address; | |
213 | ||
214 | if (dent->d_name[0] == '.') | |
215 | continue; | |
216 | i = strtol(dent->d_name, &rest, 10); | |
217 | if (rest[0] != '\0') | |
218 | continue; | |
219 | if (i < 1) | |
220 | continue; | |
221 | snprintf(str, sizeof(str), "%s/%s/address", slots, dent->d_name); | |
222 | if (read_one_line_file(str, &address) >= 0) { | |
223 | /* match slot address with device by stripping the function */ | |
02609440 | 224 | if (strncmp(address, udev_device_get_sysname(names->pcidev), strlen(address)) == 0) |
0035597a KS |
225 | hotplug_slot = i; |
226 | free(address); | |
227 | } | |
228 | ||
229 | if (hotplug_slot > 0) | |
230 | break; | |
231 | } | |
232 | closedir(dir); | |
d23965a6 | 233 | |
0035597a | 234 | if (hotplug_slot > 0) { |
1328f66a | 235 | s = names->pci_slot; |
d5a89d7d | 236 | l = strpcpyf(&s, sizeof(names->pci_slot), "s%d", hotplug_slot); |
1328f66a | 237 | if (func > 0 || is_pci_multifunction(names->pcidev)) |
d5a89d7d | 238 | l = strpcpyf(&s, l, "f%d", func); |
1328f66a | 239 | if (dev_id > 0) |
d5a89d7d | 240 | l = strpcpyf(&s, l, "d%d", dev_id); |
1328f66a KS |
241 | if (l == 0) |
242 | names->pci_path[0] = '\0'; | |
d23965a6 | 243 | } |
0035597a KS |
244 | out: |
245 | udev_device_unref(pci); | |
246 | return err; | |
247 | } | |
248 | ||
02609440 | 249 | static int names_pci(struct udev_device *dev, struct netnames *names) { |
5b8180d3 | 250 | struct udev_device *parent; |
0035597a | 251 | |
5b8180d3 | 252 | parent = udev_device_get_parent(dev); |
02609440 KS |
253 | if (!parent) |
254 | return -ENOENT; | |
255 | /* check if our direct parent is a PCI device with no other bus in-between */ | |
256 | if (streq("pci", udev_device_get_subsystem(parent))) { | |
257 | names->type = NET_PCI; | |
258 | names->pcidev = parent; | |
259 | } else { | |
260 | names->pcidev = udev_device_get_parent_with_subsystem_devtype(dev, "pci", NULL); | |
261 | if (!names->pcidev) | |
262 | return -ENOENT; | |
263 | } | |
264 | dev_pci_onboard(dev, names); | |
265 | dev_pci_slot(dev, names); | |
266 | return 0; | |
267 | } | |
268 | ||
269 | static int names_usb(struct udev_device *dev, struct netnames *names) { | |
984c4348 | 270 | struct udev_device *usbdev; |
02609440 KS |
271 | char name[256]; |
272 | char *ports; | |
273 | char *config; | |
274 | char *interf; | |
275 | size_t l; | |
276 | char *s; | |
277 | ||
984c4348 KS |
278 | usbdev = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_interface"); |
279 | if (!usbdev) | |
0035597a KS |
280 | return -ENOENT; |
281 | ||
02609440 | 282 | /* get USB port number chain, configuration, interface */ |
984c4348 | 283 | strscpy(name, sizeof(name), udev_device_get_sysname(usbdev)); |
02609440 KS |
284 | s = strchr(name, '-'); |
285 | if (!s) | |
286 | return -EINVAL; | |
287 | ports = s+1; | |
288 | ||
289 | s = strchr(ports, ':'); | |
290 | if (!s) | |
291 | return -EINVAL; | |
292 | s[0] = '\0'; | |
293 | config = s+1; | |
294 | ||
295 | s = strchr(config, '.'); | |
296 | if (!s) | |
297 | return -EINVAL; | |
298 | s[0] = '\0'; | |
299 | interf = s+1; | |
300 | ||
301 | /* prefix every port number in the chain with "u"*/ | |
302 | s = ports; | |
303 | while ((s = strchr(s, '.'))) | |
304 | s[0] = 'u'; | |
305 | s = names->usb_ports; | |
d5a89d7d | 306 | l = strpcpyl(&s, sizeof(names->usb_ports), "u", ports, NULL); |
02609440 KS |
307 | |
308 | /* append USB config number, suppress the common config == 1 */ | |
309 | if (!streq(config, "1")) | |
d5a89d7d | 310 | l = strpcpyl(&s, sizeof(names->usb_ports), "c", config, NULL); |
02609440 KS |
311 | |
312 | /* append USB interface number, suppress the interface == 0 */ | |
313 | if (!streq(interf, "0")) | |
d5a89d7d | 314 | l = strpcpyl(&s, sizeof(names->usb_ports), "i", interf, NULL); |
02609440 KS |
315 | if (l == 0) |
316 | return -ENAMETOOLONG; | |
317 | ||
318 | names->type = NET_USB; | |
d23965a6 KS |
319 | return 0; |
320 | } | |
321 | ||
984c4348 KS |
322 | static int names_bcma(struct udev_device *dev, struct netnames *names) { |
323 | struct udev_device *bcmadev; | |
324 | unsigned int core; | |
325 | ||
326 | bcmadev = udev_device_get_parent_with_subsystem_devtype(dev, "bcma", NULL); | |
327 | if (!bcmadev) | |
328 | return -ENOENT; | |
329 | ||
f4ddacbd | 330 | /* bus num:core num */ |
984c4348 KS |
331 | if (sscanf(udev_device_get_sysname(bcmadev), "bcma%*d:%d", &core) != 1) |
332 | return -EINVAL; | |
f4ddacbd KS |
333 | /* suppress the common core == 0 */ |
334 | if (core > 0) | |
335 | snprintf(names->bcma_core, sizeof(names->bcma_core), "b%d", core); | |
336 | ||
984c4348 KS |
337 | names->type = NET_BCMA; |
338 | return 0; | |
339 | } | |
340 | ||
02609440 | 341 | static int names_mac(struct udev_device *dev, struct netnames *names) { |
d23965a6 KS |
342 | const char *s; |
343 | unsigned int i; | |
344 | unsigned int a1, a2, a3, a4, a5, a6; | |
d23965a6 KS |
345 | |
346 | /* check for NET_ADDR_PERM, skip random MAC addresses */ | |
347 | s = udev_device_get_sysattr_value(dev, "addr_assign_type"); | |
348 | if (!s) | |
349 | return EXIT_FAILURE; | |
350 | i = strtoul(s, NULL, 0); | |
351 | if (i != 0) | |
352 | return 0; | |
353 | ||
354 | s = udev_device_get_sysattr_value(dev, "address"); | |
355 | if (!s) | |
356 | return -ENOENT; | |
357 | if (sscanf(s, "%x:%x:%x:%x:%x:%x", &a1, &a2, &a3, &a4, &a5, &a6) != 6) | |
358 | return -EINVAL; | |
359 | ||
360 | /* skip empty MAC addresses */ | |
361 | if (a1 + a2 + a3 + a4 + a5 + a6 == 0) | |
a660c63c KS |
362 | return -EINVAL; |
363 | ||
02609440 KS |
364 | names->mac[0] = a1; |
365 | names->mac[1] = a2; | |
366 | names->mac[2] = a3; | |
367 | names->mac[3] = a4; | |
368 | names->mac[4] = a5; | |
369 | names->mac[5] = a6; | |
370 | names->mac_valid = true; | |
371 | return 0; | |
372 | } | |
d23965a6 | 373 | |
02609440 KS |
374 | /* IEEE Organizationally Unique Identifier vendor string */ |
375 | static int ieee_oui(struct udev_device *dev, struct netnames *names, bool test) { | |
971e7fb6 | 376 | char str[32]; |
02609440 | 377 | |
971e7fb6 | 378 | if (!names->mac_valid) |
02609440 KS |
379 | return -ENOENT; |
380 | /* skip commonly misused 00:00:00 (Xerox) prefix */ | |
381 | if (memcmp(names->mac, "\0\0\0", 3) == 0) | |
382 | return -EINVAL; | |
383 | snprintf(str, sizeof(str), "OUI:%02X%02X%02X%02X%02X%02X", | |
384 | names->mac[0], names->mac[1], names->mac[2], | |
385 | names->mac[3], names->mac[4], names->mac[5]); | |
386 | udev_builtin_hwdb_lookup(dev, str, test); | |
387 | return 0; | |
a660c63c KS |
388 | } |
389 | ||
390 | static int builtin_net_id(struct udev_device *dev, int argc, char *argv[], bool test) { | |
d23965a6 | 391 | const char *s; |
72bc96f0 | 392 | const char *p; |
d23965a6 KS |
393 | unsigned int i; |
394 | const char *devtype; | |
395 | const char *prefix = "en"; | |
02609440 KS |
396 | struct netnames names; |
397 | int err; | |
d23965a6 KS |
398 | |
399 | /* handle only ARPHRD_ETHER devices */ | |
400 | s = udev_device_get_sysattr_value(dev, "type"); | |
401 | if (!s) | |
402 | return EXIT_FAILURE; | |
403 | i = strtoul(s, NULL, 0); | |
404 | if (i != 1) | |
405 | return 0; | |
406 | ||
72bc96f0 KS |
407 | /* skip stacked devices, like VLANs, ... */ |
408 | s = udev_device_get_sysattr_value(dev, "ifindex"); | |
409 | if (!s) | |
410 | return EXIT_FAILURE; | |
411 | p = udev_device_get_sysattr_value(dev, "iflink"); | |
412 | if (!p) | |
413 | return EXIT_FAILURE; | |
414 | if (strcmp(s, p) != 0) | |
415 | return 0; | |
416 | ||
d23965a6 KS |
417 | devtype = udev_device_get_devtype(dev); |
418 | if (devtype) { | |
419 | if (streq("wlan", devtype)) | |
420 | prefix = "wl"; | |
421 | else if (streq("wwan", devtype)) | |
422 | prefix = "ww"; | |
423 | } | |
424 | ||
02609440 KS |
425 | zero(names); |
426 | err = names_mac(dev, &names); | |
427 | if (err >= 0 && names.mac_valid) { | |
428 | char str[IFNAMSIZ]; | |
429 | ||
430 | snprintf(str, sizeof(str), "%sx%02x%02x%02x%02x%02x%02x", prefix, | |
431 | names.mac[0], names.mac[1], names.mac[2], | |
432 | names.mac[3], names.mac[4], names.mac[5]); | |
433 | udev_builtin_add_property(dev, test, "ID_NET_NAME_MAC", str); | |
434 | ||
435 | ieee_oui(dev, &names, test); | |
436 | } | |
437 | ||
438 | /* get PCI based path names, we compose only PCI based paths */ | |
439 | err = names_pci(dev, &names); | |
440 | if (err < 0) | |
441 | goto out; | |
442 | ||
443 | /* plain PCI device */ | |
444 | if (names.type == NET_PCI) { | |
445 | char str[IFNAMSIZ]; | |
446 | ||
447 | if (names.pci_onboard[0]) | |
448 | if (snprintf(str, sizeof(str), "%s%s", prefix, names.pci_onboard) < (int)sizeof(str)) | |
449 | udev_builtin_add_property(dev, test, "ID_NET_NAME_ONBOARD", str); | |
450 | ||
451 | if (names.pci_onboard_label) | |
452 | if (snprintf(str, sizeof(str), "%s%s", prefix, names.pci_onboard_label) < (int)sizeof(str)) | |
453 | udev_builtin_add_property(dev, test, "ID_NET_LABEL_ONBOARD", str); | |
454 | ||
455 | if (names.pci_path[0]) | |
456 | if (snprintf(str, sizeof(str), "%s%s", prefix, names.pci_path) < (int)sizeof(str)) | |
457 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); | |
458 | ||
459 | if (names.pci_slot[0]) | |
460 | if (snprintf(str, sizeof(str), "%s%s", prefix, names.pci_slot) < (int)sizeof(str)) | |
461 | udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str); | |
462 | goto out; | |
463 | } | |
464 | ||
465 | /* USB device */ | |
466 | err = names_usb(dev, &names); | |
467 | if (err >= 0 && names.type == NET_USB) { | |
468 | char str[IFNAMSIZ]; | |
469 | ||
470 | if (names.pci_path[0]) | |
471 | if (snprintf(str, sizeof(str), "%s%s%s", prefix, names.pci_path, names.usb_ports) < (int)sizeof(str)) | |
472 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); | |
473 | ||
474 | if (names.pci_slot[0]) | |
475 | if (snprintf(str, sizeof(str), "%s%s%s", prefix, names.pci_slot, names.usb_ports) < (int)sizeof(str)) | |
476 | udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str); | |
984c4348 KS |
477 | goto out; |
478 | } | |
479 | ||
480 | /* Broadcom bus */ | |
481 | err = names_bcma(dev, &names); | |
482 | if (err >= 0 && names.type == NET_BCMA) { | |
483 | char str[IFNAMSIZ]; | |
484 | ||
485 | if (names.pci_path[0]) | |
486 | if (snprintf(str, sizeof(str), "%s%s%s", prefix, names.pci_path, names.bcma_core) < (int)sizeof(str)) | |
487 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); | |
488 | ||
489 | if (names.pci_slot[0]) | |
490 | if (snprintf(str, sizeof(str), "%s%s%s", prefix, names.pci_slot, names.bcma_core) < (int)sizeof(str)) | |
491 | udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str); | |
492 | goto out; | |
02609440 | 493 | } |
984c4348 | 494 | |
02609440 | 495 | out: |
a660c63c KS |
496 | return EXIT_SUCCESS; |
497 | } | |
498 | ||
499 | const struct udev_builtin udev_builtin_net_id = { | |
500 | .name = "net_id", | |
501 | .cmd = builtin_net_id, | |
502 | .help = "network device properties", | |
503 | }; |