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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a660c63c | 2 | |
d23965a6 | 3 | /* |
ad37f393 | 4 | * Predictable network interface device names based on: |
472780d8 KS |
5 | * - firmware/bios-provided index numbers for on-board devices |
6 | * - firmware-provided pci-express hotplug slot index number | |
7 | * - physical/geographical location of the hardware | |
8 | * - the interface's MAC address | |
9 | * | |
25da63b9 KS |
10 | * http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames |
11 | * | |
0b1e5b6e | 12 | * When the code here is changed, man/systemd.net-naming-scheme.xml must be updated too. |
d23965a6 KS |
13 | */ |
14 | ||
a660c63c | 15 | #include <errno.h> |
07630cea | 16 | #include <fcntl.h> |
02609440 | 17 | #include <net/if.h> |
19aa72f7 | 18 | #include <net/if_arp.h> |
07630cea | 19 | #include <stdarg.h> |
07630cea | 20 | #include <stdlib.h> |
07630cea | 21 | #include <unistd.h> |
de892aea | 22 | #include <linux/pci_regs.h> |
a660c63c | 23 | |
07a26e42 | 24 | #include "alloc-util.h" |
8fb3f009 | 25 | #include "dirent-util.h" |
3ffd4af2 | 26 | #include "fd-util.h" |
a5c32cff | 27 | #include "fileio.h" |
609948c7 | 28 | #include "fs-util.h" |
35b35190 | 29 | #include "naming-scheme.h" |
9009d3b5 | 30 | #include "parse-util.h" |
f7e81fd9 | 31 | #include "proc-cmdline.h" |
d054f0a4 | 32 | #include "stdio-util.h" |
07630cea | 33 | #include "string-util.h" |
07a26e42 YW |
34 | #include "strv.h" |
35 | #include "strxcpyx.h" | |
36 | #include "udev-builtin.h" | |
a660c63c | 37 | |
6c1e69f9 LP |
38 | #define ONBOARD_INDEX_MAX (16*1024-1) |
39 | ||
02609440 KS |
40 | enum netname_type{ |
41 | NET_UNDEF, | |
42 | NET_PCI, | |
43 | NET_USB, | |
984c4348 | 44 | NET_BCMA, |
e3d56334 | 45 | NET_VIRTIO, |
ecc11cf7 | 46 | NET_CCW, |
765a00b9 | 47 | NET_VIO, |
c20e6de8 | 48 | NET_PLATFORM, |
eaa9d507 | 49 | NET_NETDEVSIM, |
02609440 KS |
50 | }; |
51 | ||
52 | struct netnames { | |
53 | enum netname_type type; | |
54 | ||
55 | uint8_t mac[6]; | |
56 | bool mac_valid; | |
57 | ||
09d04a74 | 58 | sd_device *pcidev; |
02609440 KS |
59 | char pci_slot[IFNAMSIZ]; |
60 | char pci_path[IFNAMSIZ]; | |
61 | char pci_onboard[IFNAMSIZ]; | |
62 | const char *pci_onboard_label; | |
63 | ||
02609440 | 64 | char usb_ports[IFNAMSIZ]; |
984c4348 | 65 | char bcma_core[IFNAMSIZ]; |
ecc11cf7 | 66 | char ccw_busid[IFNAMSIZ]; |
765a00b9 | 67 | char vio_slot[IFNAMSIZ]; |
c20e6de8 | 68 | char platform_path[IFNAMSIZ]; |
eaa9d507 | 69 | char netdevsim_path[IFNAMSIZ]; |
02609440 KS |
70 | }; |
71 | ||
609948c7 | 72 | struct virtfn_info { |
09d04a74 | 73 | sd_device *physfn_pcidev; |
609948c7 SH |
74 | char suffix[IFNAMSIZ]; |
75 | }; | |
76 | ||
ecc11cf7 | 77 | /* skip intermediate virtio devices */ |
09d04a74 YW |
78 | static sd_device *skip_virtio(sd_device *dev) { |
79 | sd_device *parent; | |
ecc11cf7 VM |
80 | |
81 | /* there can only ever be one virtio bus per parent device, so we can | |
09d04a74 YW |
82 | * safely ignore any virtio buses. see |
83 | * http://lists.linuxfoundation.org/pipermail/virtualization/2015-August/030331.html */ | |
84 | for (parent = dev; parent; ) { | |
85 | const char *subsystem; | |
86 | ||
87 | if (sd_device_get_subsystem(parent, &subsystem) < 0) | |
88 | break; | |
89 | ||
90 | if (!streq(subsystem, "virtio")) | |
91 | break; | |
92 | ||
93 | if (sd_device_get_parent(parent, &parent) < 0) | |
94 | return NULL; | |
95 | } | |
96 | ||
ecc11cf7 VM |
97 | return parent; |
98 | } | |
99 | ||
09d04a74 YW |
100 | static int get_virtfn_info(sd_device *dev, struct netnames *names, struct virtfn_info *ret) { |
101 | _cleanup_(sd_device_unrefp) sd_device *physfn_pcidev = NULL; | |
102 | const char *physfn_link_file, *syspath; | |
609948c7 SH |
103 | _cleanup_free_ char *physfn_pci_syspath = NULL; |
104 | _cleanup_free_ char *virtfn_pci_syspath = NULL; | |
105 | struct dirent *dent; | |
106 | _cleanup_closedir_ DIR *dir = NULL; | |
09d04a74 | 107 | char suffix[IFNAMSIZ]; |
609948c7 SH |
108 | int r; |
109 | ||
09d04a74 YW |
110 | assert(dev); |
111 | assert(names); | |
112 | assert(ret); | |
113 | ||
114 | r = sd_device_get_syspath(names->pcidev, &syspath); | |
115 | if (r < 0) | |
116 | return r; | |
117 | ||
609948c7 | 118 | /* Check if this is a virtual function. */ |
09d04a74 | 119 | physfn_link_file = strjoina(syspath, "/physfn"); |
a5648b80 | 120 | r = chase_symlinks(physfn_link_file, NULL, 0, &physfn_pci_syspath, NULL); |
609948c7 SH |
121 | if (r < 0) |
122 | return r; | |
123 | ||
124 | /* Get physical function's pci device. */ | |
09d04a74 YW |
125 | r = sd_device_new_from_syspath(&physfn_pcidev, physfn_pci_syspath); |
126 | if (r < 0) | |
127 | return r; | |
609948c7 SH |
128 | |
129 | /* Find the virtual function number by finding the right virtfn link. */ | |
130 | dir = opendir(physfn_pci_syspath); | |
09d04a74 YW |
131 | if (!dir) |
132 | return -errno; | |
133 | ||
609948c7 SH |
134 | FOREACH_DIRENT_ALL(dent, dir, break) { |
135 | _cleanup_free_ char *virtfn_link_file = NULL; | |
09d04a74 | 136 | |
609948c7 SH |
137 | if (!startswith(dent->d_name, "virtfn")) |
138 | continue; | |
09d04a74 | 139 | |
657ee2d8 | 140 | virtfn_link_file = path_join(physfn_pci_syspath, dent->d_name); |
09d04a74 YW |
141 | if (!virtfn_link_file) |
142 | return -ENOMEM; | |
143 | ||
a5648b80 | 144 | if (chase_symlinks(virtfn_link_file, NULL, 0, &virtfn_pci_syspath, NULL) < 0) |
609948c7 | 145 | continue; |
09d04a74 YW |
146 | |
147 | if (streq(syspath, virtfn_pci_syspath)) { | |
148 | if (!snprintf_ok(suffix, sizeof(suffix), "v%s", &dent->d_name[6])) | |
149 | return -ENOENT; | |
150 | ||
609948c7 SH |
151 | break; |
152 | } | |
153 | } | |
09d04a74 YW |
154 | if (isempty(suffix)) |
155 | return -ENOENT; | |
156 | ||
157 | ret->physfn_pcidev = TAKE_PTR(physfn_pcidev); | |
158 | strncpy(ret->suffix, suffix, sizeof(ret->suffix)); | |
609948c7 | 159 | |
09d04a74 | 160 | return 0; |
609948c7 SH |
161 | } |
162 | ||
0035597a | 163 | /* retrieve on-board index number and label from firmware */ |
09d04a74 | 164 | static int dev_pci_onboard(sd_device *dev, struct netnames *names) { |
614a8274 | 165 | unsigned long idx, dev_port = 0; |
09d04a74 | 166 | const char *attr, *port_name = NULL; |
c0a43734 TG |
167 | size_t l; |
168 | char *s; | |
d81186ef | 169 | int r; |
a660c63c | 170 | |
4c27f691 | 171 | /* ACPI _DSM — device specific method for naming a PCI or PCI Express device */ |
09d04a74 YW |
172 | if (sd_device_get_sysattr_value(names->pcidev, "acpi_index", &attr) < 0) { |
173 | /* SMBIOS type 41 — Onboard Devices Extended Information */ | |
174 | r = sd_device_get_sysattr_value(names->pcidev, "index", &attr); | |
175 | if (r < 0) | |
176 | return r; | |
177 | } | |
c0a43734 | 178 | |
d81186ef JH |
179 | r = safe_atolu(attr, &idx); |
180 | if (r < 0) | |
181 | return r; | |
f7e81fd9 LP |
182 | if (idx == 0 && !naming_scheme_has(NAMING_ZERO_ACPI_INDEX)) |
183 | return -EINVAL; | |
c0a43734 | 184 | |
4c27f691 ZJS |
185 | /* Some BIOSes report rubbish indexes that are excessively high (2^24-1 is an index VMware likes to |
186 | * report for example). Let's define a cut-off where we don't consider the index reliable anymore. We | |
187 | * pick some arbitrary cut-off, which is somewhere beyond the realistic number of physical network | |
188 | * interface a system might have. Ideally the kernel would already filter his crap for us, but it | |
189 | * doesn't currently. */ | |
6c1e69f9 LP |
190 | if (idx > ONBOARD_INDEX_MAX) |
191 | return -ENOENT; | |
192 | ||
309b578d | 193 | /* kernel provided port index for multiple ports on a single PCI function */ |
09d04a74 | 194 | if (sd_device_get_sysattr_value(dev, "dev_port", &attr) >= 0) |
b8e8823e | 195 | dev_port = strtoul(attr, NULL, 10); |
c0a43734 | 196 | |
4887b656 | 197 | /* kernel provided front panel port name for multiple port PCI device */ |
09d04a74 | 198 | (void) sd_device_get_sysattr_value(dev, "phys_port_name", &port_name); |
4887b656 | 199 | |
c0a43734 TG |
200 | s = names->pci_onboard; |
201 | l = sizeof(names->pci_onboard); | |
614a8274 | 202 | l = strpcpyf(&s, l, "o%lu", idx); |
4887b656 JP |
203 | if (port_name) |
204 | l = strpcpyf(&s, l, "n%s", port_name); | |
205 | else if (dev_port > 0) | |
614a8274 | 206 | l = strpcpyf(&s, l, "d%lu", dev_port); |
c0a43734 TG |
207 | if (l == 0) |
208 | names->pci_onboard[0] = '\0'; | |
d23965a6 | 209 | |
09d04a74 YW |
210 | if (sd_device_get_sysattr_value(names->pcidev, "label", &names->pci_onboard_label) < 0) |
211 | names->pci_onboard_label = NULL; | |
c0a43734 | 212 | |
0035597a KS |
213 | return 0; |
214 | } | |
d23965a6 | 215 | |
137661d8 | 216 | /* read the 256 bytes PCI configuration space to check the multi-function bit */ |
09d04a74 | 217 | static bool is_pci_multifunction(sd_device *dev) { |
0454229c | 218 | _cleanup_close_ int fd = -1; |
09d04a74 | 219 | const char *filename, *syspath; |
1cb5d1f3 | 220 | uint8_t config[64]; |
de892aea | 221 | |
09d04a74 YW |
222 | if (sd_device_get_syspath(dev, &syspath) < 0) |
223 | return false; | |
224 | ||
225 | filename = strjoina(syspath, "/config"); | |
0454229c JM |
226 | fd = open(filename, O_RDONLY | O_CLOEXEC); |
227 | if (fd < 0) | |
1cb5d1f3 | 228 | return false; |
0454229c | 229 | if (read(fd, &config, sizeof(config)) != sizeof(config)) |
1cb5d1f3 | 230 | return false; |
de892aea KS |
231 | |
232 | /* bit 0-6 header type, bit 7 multi/single function device */ | |
09d04a74 | 233 | return config[PCI_HEADER_TYPE] & 0x80; |
de892aea KS |
234 | } |
235 | ||
09d04a74 YW |
236 | static bool is_pci_ari_enabled(sd_device *dev) { |
237 | const char *a; | |
238 | ||
239 | if (sd_device_get_sysattr_value(dev, "ari_enabled", &a) < 0) | |
240 | return false; | |
241 | ||
242 | return streq(a, "1"); | |
6bc04997 SH |
243 | } |
244 | ||
09d04a74 | 245 | static int dev_pci_slot(sd_device *dev, struct netnames *names) { |
614a8274 LP |
246 | unsigned long dev_port = 0; |
247 | unsigned domain, bus, slot, func, hotplug_slot = 0; | |
1328f66a KS |
248 | size_t l; |
249 | char *s; | |
09d04a74 YW |
250 | const char *sysname, *attr, *port_name = NULL, *syspath; |
251 | _cleanup_(sd_device_unrefp) sd_device *pci = NULL; | |
252 | sd_device *hotplug_slot_dev; | |
e68eedbb | 253 | char slots[PATH_MAX]; |
b5dd8148 | 254 | _cleanup_closedir_ DIR *dir = NULL; |
0035597a | 255 | struct dirent *dent; |
09d04a74 | 256 | int r; |
0035597a | 257 | |
09d04a74 YW |
258 | r = sd_device_get_sysname(names->pcidev, &sysname); |
259 | if (r < 0) | |
260 | return r; | |
261 | ||
262 | if (sscanf(sysname, "%x:%x:%x.%u", &domain, &bus, &slot, &func) != 4) | |
0035597a | 263 | return -ENOENT; |
09d04a74 | 264 | |
f7e81fd9 LP |
265 | if (naming_scheme_has(NAMING_NPAR_ARI) && |
266 | is_pci_ari_enabled(names->pcidev)) | |
6bc04997 SH |
267 | /* ARI devices support up to 256 functions on a single device ("slot"), and interpret the |
268 | * traditional 5-bit slot and 3-bit function number as a single 8-bit function number, | |
269 | * where the slot makes up the upper 5 bits. */ | |
270 | func += slot * 8; | |
1328f66a | 271 | |
309b578d | 272 | /* kernel provided port index for multiple ports on a single PCI function */ |
09d04a74 | 273 | if (sd_device_get_sysattr_value(dev, "dev_port", &attr) >= 0) { |
b8e8823e | 274 | dev_port = strtoul(attr, NULL, 10); |
cdd63a03 AM |
275 | /* With older kernels IP-over-InfiniBand network interfaces sometimes erroneously |
276 | * provide the port number in the 'dev_id' sysfs attribute instead of 'dev_port', | |
277 | * which thus stays initialized as 0. */ | |
09d04a74 YW |
278 | if (dev_port == 0 && |
279 | sd_device_get_sysattr_value(dev, "type", &attr) >= 0) { | |
280 | unsigned long type; | |
281 | ||
282 | type = strtoul(attr, NULL, 10); | |
283 | if (type == ARPHRD_INFINIBAND && | |
284 | sd_device_get_sysattr_value(dev, "dev_id", &attr) >= 0) | |
285 | dev_port = strtoul(attr, NULL, 16); | |
cdd63a03 AM |
286 | } |
287 | } | |
1328f66a | 288 | |
1b2a7d92 | 289 | /* kernel provided front panel port name for multi-port PCI device */ |
09d04a74 | 290 | (void) sd_device_get_sysattr_value(dev, "phys_port_name", &port_name); |
4887b656 | 291 | |
1328f66a KS |
292 | /* compose a name based on the raw kernel's PCI bus, slot numbers */ |
293 | s = names->pci_path; | |
214daa72 SM |
294 | l = sizeof(names->pci_path); |
295 | if (domain > 0) | |
1fa2f38f ZJS |
296 | l = strpcpyf(&s, l, "P%u", domain); |
297 | l = strpcpyf(&s, l, "p%us%u", bus, slot); | |
1328f66a | 298 | if (func > 0 || is_pci_multifunction(names->pcidev)) |
1fa2f38f | 299 | l = strpcpyf(&s, l, "f%u", func); |
4887b656 JP |
300 | if (port_name) |
301 | l = strpcpyf(&s, l, "n%s", port_name); | |
302 | else if (dev_port > 0) | |
614a8274 | 303 | l = strpcpyf(&s, l, "d%lu", dev_port); |
1328f66a KS |
304 | if (l == 0) |
305 | names->pci_path[0] = '\0'; | |
d23965a6 | 306 | |
1b2a7d92 | 307 | /* ACPI _SUN — slot user number */ |
09d04a74 YW |
308 | r = sd_device_new_from_subsystem_sysname(&pci, "subsystem", "pci"); |
309 | if (r < 0) | |
310 | return r; | |
e68eedbb | 311 | |
09d04a74 YW |
312 | r = sd_device_get_syspath(pci, &syspath); |
313 | if (r < 0) | |
314 | return r; | |
315 | if (!snprintf_ok(slots, sizeof slots, "%s/slots", syspath)) | |
73fc96c8 ZJS |
316 | return -ENAMETOOLONG; |
317 | ||
0035597a | 318 | dir = opendir(slots); |
cc5bbdb2 ZJS |
319 | if (!dir) |
320 | return -errno; | |
d23965a6 | 321 | |
9009d3b5 SH |
322 | hotplug_slot_dev = names->pcidev; |
323 | while (hotplug_slot_dev) { | |
09d04a74 YW |
324 | if (sd_device_get_sysname(hotplug_slot_dev, &sysname) < 0) |
325 | continue; | |
326 | ||
9009d3b5 SH |
327 | FOREACH_DIRENT_ALL(dent, dir, break) { |
328 | unsigned i; | |
9009d3b5 SH |
329 | char str[PATH_MAX]; |
330 | _cleanup_free_ char *address = NULL; | |
331 | ||
332 | if (dent->d_name[0] == '.') | |
333 | continue; | |
334 | r = safe_atou_full(dent->d_name, 10, &i); | |
09d04a74 | 335 | if (r < 0 || i <= 0) |
9009d3b5 SH |
336 | continue; |
337 | ||
09d04a74 | 338 | /* match slot address with device by stripping the function */ |
9009d3b5 | 339 | if (snprintf_ok(str, sizeof str, "%s/%s/address", slots, dent->d_name) && |
09d04a74 YW |
340 | read_one_line_file(str, &address) >= 0 && |
341 | startswith(sysname, address)) { | |
342 | hotplug_slot = i; | |
9009d3b5 | 343 | break; |
09d04a74 | 344 | } |
9009d3b5 | 345 | } |
0035597a KS |
346 | if (hotplug_slot > 0) |
347 | break; | |
09d04a74 YW |
348 | if (sd_device_get_parent_with_subsystem_devtype(hotplug_slot_dev, "pci", NULL, &hotplug_slot_dev) < 0) |
349 | break; | |
9009d3b5 | 350 | rewinddir(dir); |
0035597a | 351 | } |
d23965a6 | 352 | |
0035597a | 353 | if (hotplug_slot > 0) { |
1328f66a | 354 | s = names->pci_slot; |
214daa72 SM |
355 | l = sizeof(names->pci_slot); |
356 | if (domain > 0) | |
357 | l = strpcpyf(&s, l, "P%d", domain); | |
358 | l = strpcpyf(&s, l, "s%d", hotplug_slot); | |
1328f66a | 359 | if (func > 0 || is_pci_multifunction(names->pcidev)) |
d5a89d7d | 360 | l = strpcpyf(&s, l, "f%d", func); |
4887b656 JP |
361 | if (port_name) |
362 | l = strpcpyf(&s, l, "n%s", port_name); | |
363 | else if (dev_port > 0) | |
614a8274 | 364 | l = strpcpyf(&s, l, "d%lu", dev_port); |
1328f66a | 365 | if (l == 0) |
16f948cb | 366 | names->pci_slot[0] = '\0'; |
d23965a6 | 367 | } |
cc5bbdb2 ZJS |
368 | |
369 | return 0; | |
0035597a KS |
370 | } |
371 | ||
09d04a74 YW |
372 | static int names_vio(sd_device *dev, struct netnames *names) { |
373 | sd_device *parent; | |
765a00b9 | 374 | unsigned busid, slotid, ethid; |
09d04a74 YW |
375 | const char *syspath, *subsystem; |
376 | int r; | |
765a00b9 FB |
377 | |
378 | /* check if our direct parent is a VIO device with no other bus in-between */ | |
09d04a74 YW |
379 | r = sd_device_get_parent(dev, &parent); |
380 | if (r < 0) | |
381 | return r; | |
765a00b9 | 382 | |
09d04a74 YW |
383 | r = sd_device_get_subsystem(parent, &subsystem); |
384 | if (r < 0) | |
385 | return r; | |
386 | if (!streq("vio", subsystem)) | |
387 | return -ENOENT; | |
765a00b9 FB |
388 | |
389 | /* The devices' $DEVPATH number is tied to (virtual) hardware (slot id | |
390 | * selected in the HMC), thus this provides a reliable naming (e.g. | |
391 | * "/devices/vio/30000002/net/eth1"); we ignore the bus number, as | |
392 | * there should only ever be one bus, and then remove leading zeros. */ | |
09d04a74 YW |
393 | r = sd_device_get_syspath(dev, &syspath); |
394 | if (r < 0) | |
395 | return r; | |
765a00b9 FB |
396 | |
397 | if (sscanf(syspath, "/sys/devices/vio/%4x%4x/net/eth%u", &busid, &slotid, ðid) != 3) | |
398 | return -EINVAL; | |
399 | ||
400 | xsprintf(names->vio_slot, "v%u", slotid); | |
401 | names->type = NET_VIO; | |
402 | return 0; | |
403 | } | |
404 | ||
c20e6de8 DJL |
405 | #define _PLATFORM_TEST "/sys/devices/platform/vvvvPPPP" |
406 | #define _PLATFORM_PATTERN4 "/sys/devices/platform/%4s%4x:%2x/net/eth%u" | |
407 | #define _PLATFORM_PATTERN3 "/sys/devices/platform/%3s%4x:%2x/net/eth%u" | |
408 | ||
09d04a74 YW |
409 | static int names_platform(sd_device *dev, struct netnames *names, bool test) { |
410 | sd_device *parent; | |
c20e6de8 DJL |
411 | char vendor[5]; |
412 | unsigned model, instance, ethid; | |
09d04a74 YW |
413 | const char *syspath, *pattern, *validchars, *subsystem; |
414 | int r; | |
c20e6de8 DJL |
415 | |
416 | /* check if our direct parent is a platform device with no other bus in-between */ | |
09d04a74 YW |
417 | r = sd_device_get_parent(dev, &parent); |
418 | if (r < 0) | |
419 | return r; | |
420 | ||
421 | r = sd_device_get_subsystem(parent, &subsystem); | |
422 | if (r < 0) | |
423 | return r; | |
c20e6de8 | 424 | |
09d04a74 | 425 | if (!streq("platform", subsystem)) |
c20e6de8 DJL |
426 | return -ENOENT; |
427 | ||
09d04a74 YW |
428 | r = sd_device_get_syspath(dev, &syspath); |
429 | if (r < 0) | |
430 | return r; | |
c20e6de8 DJL |
431 | |
432 | /* syspath is too short, to have a valid ACPI instance */ | |
433 | if (strlen(syspath) < sizeof _PLATFORM_TEST) | |
434 | return -EINVAL; | |
435 | ||
436 | /* Vendor ID can be either PNP ID (3 chars A-Z) or ACPI ID (4 chars A-Z and numerals) */ | |
437 | if (syspath[sizeof _PLATFORM_TEST - 1] == ':') { | |
438 | pattern = _PLATFORM_PATTERN4; | |
439 | validchars = UPPERCASE_LETTERS DIGITS; | |
440 | } else { | |
441 | pattern = _PLATFORM_PATTERN3; | |
442 | validchars = UPPERCASE_LETTERS; | |
443 | } | |
444 | ||
445 | /* Platform devices are named after ACPI table match, and instance id | |
446 | * eg. "/sys/devices/platform/HISI00C2:00"); | |
447 | * The Vendor (3 or 4 char), followed by hexdecimal model number : instance id. | |
448 | */ | |
86a48fb6 LP |
449 | |
450 | #pragma GCC diagnostic push | |
451 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
c20e6de8 DJL |
452 | if (sscanf(syspath, pattern, vendor, &model, &instance, ðid) != 4) |
453 | return -EINVAL; | |
86a48fb6 | 454 | #pragma GCC diagnostic pop |
c20e6de8 DJL |
455 | |
456 | if (!in_charset(vendor, validchars)) | |
457 | return -ENOENT; | |
458 | ||
459 | ascii_strlower(vendor); | |
460 | ||
461 | xsprintf(names->platform_path, "a%s%xi%u", vendor, model, instance); | |
462 | names->type = NET_PLATFORM; | |
463 | return 0; | |
464 | } | |
465 | ||
09d04a74 YW |
466 | static int names_pci(sd_device *dev, struct netnames *names) { |
467 | sd_device *parent; | |
609948c7 SH |
468 | struct netnames vf_names = {}; |
469 | struct virtfn_info vf_info = {}; | |
09d04a74 YW |
470 | const char *subsystem; |
471 | int r; | |
0035597a | 472 | |
3b64e4d4 TG |
473 | assert(dev); |
474 | assert(names); | |
475 | ||
09d04a74 YW |
476 | r = sd_device_get_parent(dev, &parent); |
477 | if (r < 0) | |
478 | return r; | |
ecc11cf7 VM |
479 | /* skip virtio subsystem if present */ |
480 | parent = skip_virtio(parent); | |
54683f0f | 481 | |
02609440 KS |
482 | if (!parent) |
483 | return -ENOENT; | |
54683f0f | 484 | |
02609440 | 485 | /* check if our direct parent is a PCI device with no other bus in-between */ |
09d04a74 YW |
486 | if (sd_device_get_subsystem(parent, &subsystem) >= 0 && |
487 | streq("pci", subsystem)) { | |
02609440 KS |
488 | names->type = NET_PCI; |
489 | names->pcidev = parent; | |
490 | } else { | |
09d04a74 YW |
491 | r = sd_device_get_parent_with_subsystem_devtype(dev, "pci", NULL, &names->pcidev); |
492 | if (r < 0) | |
493 | return r; | |
02609440 | 494 | } |
609948c7 | 495 | |
f7e81fd9 LP |
496 | if (naming_scheme_has(NAMING_SR_IOV_V) && |
497 | get_virtfn_info(dev, names, &vf_info) >= 0) { | |
609948c7 SH |
498 | /* If this is an SR-IOV virtual device, get base name using physical device and add virtfn suffix. */ |
499 | vf_names.pcidev = vf_info.physfn_pcidev; | |
500 | dev_pci_onboard(dev, &vf_names); | |
501 | dev_pci_slot(dev, &vf_names); | |
502 | if (vf_names.pci_onboard[0]) | |
503 | if (strlen(vf_names.pci_onboard) + strlen(vf_info.suffix) < sizeof(names->pci_onboard)) | |
504 | strscpyl(names->pci_onboard, sizeof(names->pci_onboard), | |
505 | vf_names.pci_onboard, vf_info.suffix, NULL); | |
506 | if (vf_names.pci_slot[0]) | |
507 | if (strlen(vf_names.pci_slot) + strlen(vf_info.suffix) < sizeof(names->pci_slot)) | |
508 | strscpyl(names->pci_slot, sizeof(names->pci_slot), | |
509 | vf_names.pci_slot, vf_info.suffix, NULL); | |
510 | if (vf_names.pci_path[0]) | |
511 | if (strlen(vf_names.pci_path) + strlen(vf_info.suffix) < sizeof(names->pci_path)) | |
512 | strscpyl(names->pci_path, sizeof(names->pci_path), | |
513 | vf_names.pci_path, vf_info.suffix, NULL); | |
09d04a74 | 514 | sd_device_unref(vf_info.physfn_pcidev); |
609948c7 SH |
515 | } else { |
516 | dev_pci_onboard(dev, names); | |
517 | dev_pci_slot(dev, names); | |
518 | } | |
09d04a74 | 519 | |
02609440 KS |
520 | return 0; |
521 | } | |
522 | ||
09d04a74 YW |
523 | static int names_usb(sd_device *dev, struct netnames *names) { |
524 | sd_device *usbdev; | |
525 | char name[256], *ports, *config, *interf, *s; | |
526 | const char *sysname; | |
02609440 | 527 | size_t l; |
09d04a74 | 528 | int r; |
02609440 | 529 | |
3b64e4d4 TG |
530 | assert(dev); |
531 | assert(names); | |
532 | ||
09d04a74 YW |
533 | r = sd_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_interface", &usbdev); |
534 | if (r < 0) | |
535 | return r; | |
536 | ||
537 | r = sd_device_get_sysname(usbdev, &sysname); | |
538 | if (r < 0) | |
539 | return r; | |
0035597a | 540 | |
02609440 | 541 | /* get USB port number chain, configuration, interface */ |
09d04a74 | 542 | strscpy(name, sizeof(name), sysname); |
02609440 KS |
543 | s = strchr(name, '-'); |
544 | if (!s) | |
545 | return -EINVAL; | |
546 | ports = s+1; | |
547 | ||
548 | s = strchr(ports, ':'); | |
549 | if (!s) | |
550 | return -EINVAL; | |
551 | s[0] = '\0'; | |
552 | config = s+1; | |
553 | ||
554 | s = strchr(config, '.'); | |
555 | if (!s) | |
556 | return -EINVAL; | |
557 | s[0] = '\0'; | |
558 | interf = s+1; | |
559 | ||
f7340ab2 | 560 | /* prefix every port number in the chain with "u" */ |
02609440 KS |
561 | s = ports; |
562 | while ((s = strchr(s, '.'))) | |
563 | s[0] = 'u'; | |
564 | s = names->usb_ports; | |
d5a89d7d | 565 | l = strpcpyl(&s, sizeof(names->usb_ports), "u", ports, NULL); |
02609440 KS |
566 | |
567 | /* append USB config number, suppress the common config == 1 */ | |
568 | if (!streq(config, "1")) | |
d5a89d7d | 569 | l = strpcpyl(&s, sizeof(names->usb_ports), "c", config, NULL); |
02609440 KS |
570 | |
571 | /* append USB interface number, suppress the interface == 0 */ | |
572 | if (!streq(interf, "0")) | |
d5a89d7d | 573 | l = strpcpyl(&s, sizeof(names->usb_ports), "i", interf, NULL); |
02609440 KS |
574 | if (l == 0) |
575 | return -ENAMETOOLONG; | |
576 | ||
577 | names->type = NET_USB; | |
d23965a6 KS |
578 | return 0; |
579 | } | |
580 | ||
09d04a74 YW |
581 | static int names_bcma(sd_device *dev, struct netnames *names) { |
582 | sd_device *bcmadev; | |
14cb109d | 583 | unsigned core; |
09d04a74 YW |
584 | const char *sysname; |
585 | int r; | |
984c4348 | 586 | |
3b64e4d4 TG |
587 | assert(dev); |
588 | assert(names); | |
589 | ||
09d04a74 YW |
590 | r = sd_device_get_parent_with_subsystem_devtype(dev, "bcma", NULL, &bcmadev); |
591 | if (r < 0) | |
592 | return r; | |
593 | ||
594 | r = sd_device_get_sysname(bcmadev, &sysname); | |
595 | if (r < 0) | |
596 | return r; | |
984c4348 | 597 | |
f4ddacbd | 598 | /* bus num:core num */ |
09d04a74 | 599 | if (sscanf(sysname, "bcma%*u:%u", &core) != 1) |
984c4348 | 600 | return -EINVAL; |
f4ddacbd KS |
601 | /* suppress the common core == 0 */ |
602 | if (core > 0) | |
d054f0a4 | 603 | xsprintf(names->bcma_core, "b%u", core); |
f4ddacbd | 604 | |
984c4348 KS |
605 | names->type = NET_BCMA; |
606 | return 0; | |
607 | } | |
608 | ||
09d04a74 YW |
609 | static int names_ccw(sd_device *dev, struct netnames *names) { |
610 | sd_device *cdev; | |
3877500c | 611 | const char *bus_id, *subsys; |
e0d4a0ac | 612 | size_t bus_id_len; |
ecc11cf7 | 613 | size_t bus_id_start; |
09d04a74 | 614 | int r; |
e0d4a0ac | 615 | |
3b64e4d4 TG |
616 | assert(dev); |
617 | assert(names); | |
618 | ||
e0d4a0ac | 619 | /* Retrieve the associated CCW device */ |
09d04a74 YW |
620 | r = sd_device_get_parent(dev, &cdev); |
621 | if (r < 0) | |
622 | return r; | |
623 | ||
ecc11cf7 VM |
624 | /* skip virtio subsystem if present */ |
625 | cdev = skip_virtio(cdev); | |
e0d4a0ac HB |
626 | if (!cdev) |
627 | return -ENOENT; | |
628 | ||
09d04a74 YW |
629 | r = sd_device_get_subsystem(cdev, &subsys); |
630 | if (r < 0) | |
631 | return r; | |
632 | ||
ecc11cf7 | 633 | /* Network devices are either single or grouped CCW devices */ |
09d04a74 | 634 | if (!STR_IN_SET(subsys, "ccwgroup", "ccw")) |
e0d4a0ac HB |
635 | return -ENOENT; |
636 | ||
ecc11cf7 | 637 | /* Retrieve bus-ID of the CCW device. The bus-ID uniquely |
e0d4a0ac HB |
638 | * identifies the network device on the Linux on System z channel |
639 | * subsystem. Note that the bus-ID contains lowercase characters. | |
640 | */ | |
09d04a74 YW |
641 | r = sd_device_get_sysname(cdev, &bus_id); |
642 | if (r < 0) | |
643 | return r; | |
e0d4a0ac | 644 | |
4c27f691 ZJS |
645 | /* Check the length of the bus-ID. Rely on the fact that the kernel provides a correct bus-ID; |
646 | * alternatively, improve this check and parse and verify each bus-ID part... | |
e0d4a0ac HB |
647 | */ |
648 | bus_id_len = strlen(bus_id); | |
977f65f0 | 649 | if (!IN_SET(bus_id_len, 8, 9)) |
e0d4a0ac HB |
650 | return -EINVAL; |
651 | ||
0037a669 DJL |
652 | /* Strip leading zeros from the bus id for aesthetic purposes. This |
653 | * keeps the ccw names stable, yet much shorter in general case of | |
654 | * bus_id 0.0.0600 -> 600. This is similar to e.g. how PCI domain is | |
ecc11cf7 | 655 | * not prepended when it is zero. Preserve the last 0 for 0.0.0000. |
0037a669 | 656 | */ |
ecc11cf7 VM |
657 | bus_id_start = strspn(bus_id, ".0"); |
658 | bus_id += bus_id_start < bus_id_len ? bus_id_start : bus_id_len - 1; | |
0037a669 | 659 | |
e0d4a0ac | 660 | /* Store the CCW bus-ID for use as network device name */ |
73fc96c8 | 661 | if (snprintf_ok(names->ccw_busid, sizeof(names->ccw_busid), "c%s", bus_id)) |
ecc11cf7 | 662 | names->type = NET_CCW; |
73fc96c8 | 663 | |
e0d4a0ac HB |
664 | return 0; |
665 | } | |
666 | ||
09d04a74 | 667 | static int names_mac(sd_device *dev, struct netnames *names) { |
d23965a6 | 668 | const char *s; |
614a8274 | 669 | unsigned long i; |
14cb109d | 670 | unsigned a1, a2, a3, a4, a5, a6; |
09d04a74 | 671 | int r; |
d23965a6 | 672 | |
a0d415da AM |
673 | /* Some kinds of devices tend to have hardware addresses |
674 | * that are impossible to use in an iface name. | |
675 | */ | |
09d04a74 YW |
676 | r = sd_device_get_sysattr_value(dev, "type", &s); |
677 | if (r < 0) | |
678 | return r; | |
679 | ||
a0d415da AM |
680 | i = strtoul(s, NULL, 0); |
681 | switch (i) { | |
682 | /* The persistent part of a hardware address of an InfiniBand NIC | |
683 | * is 8 bytes long. We cannot fit this much in an iface name. | |
684 | */ | |
685 | case ARPHRD_INFINIBAND: | |
686 | return -EINVAL; | |
687 | default: | |
688 | break; | |
689 | } | |
690 | ||
d23965a6 | 691 | /* check for NET_ADDR_PERM, skip random MAC addresses */ |
09d04a74 YW |
692 | r = sd_device_get_sysattr_value(dev, "addr_assign_type", &s); |
693 | if (r < 0) | |
694 | return r; | |
d23965a6 KS |
695 | i = strtoul(s, NULL, 0); |
696 | if (i != 0) | |
697 | return 0; | |
698 | ||
09d04a74 YW |
699 | r = sd_device_get_sysattr_value(dev, "address", &s); |
700 | if (r < 0) | |
701 | return r; | |
d23965a6 KS |
702 | if (sscanf(s, "%x:%x:%x:%x:%x:%x", &a1, &a2, &a3, &a4, &a5, &a6) != 6) |
703 | return -EINVAL; | |
704 | ||
705 | /* skip empty MAC addresses */ | |
706 | if (a1 + a2 + a3 + a4 + a5 + a6 == 0) | |
a660c63c KS |
707 | return -EINVAL; |
708 | ||
02609440 KS |
709 | names->mac[0] = a1; |
710 | names->mac[1] = a2; | |
711 | names->mac[2] = a3; | |
712 | names->mac[3] = a4; | |
713 | names->mac[4] = a5; | |
714 | names->mac[5] = a6; | |
715 | names->mac_valid = true; | |
716 | return 0; | |
717 | } | |
d23965a6 | 718 | |
eaa9d507 JP |
719 | static int names_netdevsim(sd_device *dev, struct netnames *names) { |
720 | sd_device *netdevsimdev; | |
721 | const char *sysname; | |
722 | unsigned addr; | |
723 | const char *port_name = NULL; | |
724 | int r; | |
725 | bool ok; | |
726 | ||
727 | if (!naming_scheme_has(NAMING_NETDEVSIM)) | |
728 | return 0; | |
729 | ||
730 | assert(dev); | |
731 | assert(names); | |
732 | ||
733 | r = sd_device_get_parent_with_subsystem_devtype(dev, "netdevsim", NULL, &netdevsimdev); | |
734 | if (r < 0) | |
735 | return r; | |
736 | r = sd_device_get_sysname(netdevsimdev, &sysname); | |
737 | if (r < 0) | |
738 | return r; | |
739 | ||
740 | if (sscanf(sysname, "netdevsim%u", &addr) != 1) | |
741 | return -EINVAL; | |
742 | ||
743 | r = sd_device_get_sysattr_value(dev, "phys_port_name", &port_name); | |
744 | if (r < 0) | |
745 | return r; | |
746 | ||
747 | ok = snprintf_ok(names->netdevsim_path, sizeof(names->netdevsim_path), "i%un%s", addr, port_name); | |
748 | if (!ok) | |
749 | return -ENOBUFS; | |
750 | ||
751 | names->type = NET_NETDEVSIM; | |
752 | ||
753 | return 0; | |
754 | } | |
755 | ||
02609440 | 756 | /* IEEE Organizationally Unique Identifier vendor string */ |
09d04a74 | 757 | static int ieee_oui(sd_device *dev, struct netnames *names, bool test) { |
971e7fb6 | 758 | char str[32]; |
02609440 | 759 | |
971e7fb6 | 760 | if (!names->mac_valid) |
02609440 KS |
761 | return -ENOENT; |
762 | /* skip commonly misused 00:00:00 (Xerox) prefix */ | |
763 | if (memcmp(names->mac, "\0\0\0", 3) == 0) | |
764 | return -EINVAL; | |
d054f0a4 DM |
765 | xsprintf(str, "OUI:%02X%02X%02X%02X%02X%02X", names->mac[0], |
766 | names->mac[1], names->mac[2], names->mac[3], names->mac[4], | |
767 | names->mac[5]); | |
09d04a74 | 768 | udev_builtin_hwdb_lookup(dev, NULL, str, NULL, test); |
02609440 | 769 | return 0; |
a660c63c KS |
770 | } |
771 | ||
3fc2e9a2 | 772 | static int builtin_net_id(sd_device *dev, int argc, char *argv[], bool test) { |
09d04a74 | 773 | const char *s, *p, *devtype, *prefix = "en"; |
b92bea5d | 774 | struct netnames names = {}; |
09d04a74 YW |
775 | unsigned long i; |
776 | int r; | |
d23965a6 | 777 | |
09d04a74 YW |
778 | /* handle only ARPHRD_ETHER, ARPHRD_SLIP and ARPHRD_INFINIBAND devices */ |
779 | r = sd_device_get_sysattr_value(dev, "type", &s); | |
780 | if (r < 0) | |
d354690e | 781 | return r; |
09d04a74 | 782 | |
d23965a6 | 783 | i = strtoul(s, NULL, 0); |
e0d4a0ac | 784 | switch (i) { |
19aa72f7 | 785 | case ARPHRD_ETHER: |
e0d4a0ac HB |
786 | prefix = "en"; |
787 | break; | |
938d30aa | 788 | case ARPHRD_INFINIBAND: |
f7e81fd9 LP |
789 | if (naming_scheme_has(NAMING_INFINIBAND)) |
790 | prefix = "ib"; | |
791 | else | |
792 | return 0; | |
938d30aa | 793 | break; |
19aa72f7 | 794 | case ARPHRD_SLIP: |
e0d4a0ac HB |
795 | prefix = "sl"; |
796 | break; | |
797 | default: | |
d23965a6 | 798 | return 0; |
e0d4a0ac | 799 | } |
d23965a6 | 800 | |
72bc96f0 | 801 | /* skip stacked devices, like VLANs, ... */ |
09d04a74 YW |
802 | r = sd_device_get_sysattr_value(dev, "ifindex", &s); |
803 | if (r < 0) | |
d354690e | 804 | return r; |
09d04a74 YW |
805 | r = sd_device_get_sysattr_value(dev, "iflink", &p); |
806 | if (r < 0) | |
d354690e | 807 | return r; |
090be865 | 808 | if (!streq(s, p)) |
72bc96f0 KS |
809 | return 0; |
810 | ||
09d04a74 | 811 | if (sd_device_get_devtype(dev, &devtype) >= 0) { |
d23965a6 KS |
812 | if (streq("wlan", devtype)) |
813 | prefix = "wl"; | |
814 | else if (streq("wwan", devtype)) | |
815 | prefix = "ww"; | |
816 | } | |
817 | ||
f7e81fd9 LP |
818 | udev_builtin_add_property(dev, test, "ID_NET_NAMING_SCHEME", naming_scheme()->name); |
819 | ||
09d04a74 YW |
820 | r = names_mac(dev, &names); |
821 | if (r >= 0 && names.mac_valid) { | |
02609440 KS |
822 | char str[IFNAMSIZ]; |
823 | ||
d054f0a4 | 824 | xsprintf(str, "%sx%02x%02x%02x%02x%02x%02x", prefix, |
02609440 KS |
825 | names.mac[0], names.mac[1], names.mac[2], |
826 | names.mac[3], names.mac[4], names.mac[5]); | |
09d04a74 | 827 | udev_builtin_add_property(dev, test, "ID_NET_NAME_MAC", str); |
02609440 KS |
828 | |
829 | ieee_oui(dev, &names, test); | |
830 | } | |
831 | ||
e0d4a0ac | 832 | /* get path names for Linux on System z network devices */ |
09d04a74 | 833 | if (names_ccw(dev, &names) >= 0 && names.type == NET_CCW) { |
e0d4a0ac HB |
834 | char str[IFNAMSIZ]; |
835 | ||
73fc96c8 | 836 | if (snprintf_ok(str, sizeof str, "%s%s", prefix, names.ccw_busid)) |
09d04a74 | 837 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); |
d354690e | 838 | return 0; |
e0d4a0ac HB |
839 | } |
840 | ||
765a00b9 | 841 | /* get ibmveth/ibmvnic slot-based names. */ |
09d04a74 | 842 | if (names_vio(dev, &names) >= 0 && names.type == NET_VIO) { |
765a00b9 FB |
843 | char str[IFNAMSIZ]; |
844 | ||
73fc96c8 | 845 | if (snprintf_ok(str, sizeof str, "%s%s", prefix, names.vio_slot)) |
09d04a74 | 846 | udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str); |
d354690e | 847 | return 0; |
765a00b9 FB |
848 | } |
849 | ||
c20e6de8 | 850 | /* get ACPI path names for ARM64 platform devices */ |
09d04a74 | 851 | if (names_platform(dev, &names, test) >= 0 && names.type == NET_PLATFORM) { |
c20e6de8 DJL |
852 | char str[IFNAMSIZ]; |
853 | ||
73fc96c8 | 854 | if (snprintf_ok(str, sizeof str, "%s%s", prefix, names.platform_path)) |
09d04a74 | 855 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); |
d354690e | 856 | return 0; |
c20e6de8 DJL |
857 | } |
858 | ||
eaa9d507 JP |
859 | /* get netdevsim path names */ |
860 | if (names_netdevsim(dev, &names) >= 0 && names.type == NET_NETDEVSIM) { | |
861 | char str[IFNAMSIZ]; | |
862 | ||
863 | if (snprintf_ok(str, sizeof str, "%s%s", prefix, names.netdevsim_path)) | |
864 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); | |
865 | ||
866 | return 0; | |
867 | } | |
868 | ||
02609440 | 869 | /* get PCI based path names, we compose only PCI based paths */ |
09d04a74 | 870 | if (names_pci(dev, &names) < 0) |
d354690e | 871 | return 0; |
02609440 KS |
872 | |
873 | /* plain PCI device */ | |
874 | if (names.type == NET_PCI) { | |
875 | char str[IFNAMSIZ]; | |
876 | ||
73fc96c8 ZJS |
877 | if (names.pci_onboard[0] && |
878 | snprintf_ok(str, sizeof str, "%s%s", prefix, names.pci_onboard)) | |
09d04a74 | 879 | udev_builtin_add_property(dev, test, "ID_NET_NAME_ONBOARD", str); |
02609440 | 880 | |
73fc96c8 | 881 | if (names.pci_onboard_label && |
8c053c83 ZJS |
882 | snprintf_ok(str, sizeof str, "%s%s", |
883 | naming_scheme_has(NAMING_LABEL_NOPREFIX) ? "" : prefix, | |
884 | names.pci_onboard_label)) | |
09d04a74 | 885 | udev_builtin_add_property(dev, test, "ID_NET_LABEL_ONBOARD", str); |
02609440 | 886 | |
73fc96c8 ZJS |
887 | if (names.pci_path[0] && |
888 | snprintf_ok(str, sizeof str, "%s%s", prefix, names.pci_path)) | |
09d04a74 | 889 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); |
02609440 | 890 | |
73fc96c8 ZJS |
891 | if (names.pci_slot[0] && |
892 | snprintf_ok(str, sizeof str, "%s%s", prefix, names.pci_slot)) | |
09d04a74 | 893 | udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str); |
d354690e | 894 | return 0; |
02609440 KS |
895 | } |
896 | ||
897 | /* USB device */ | |
09d04a74 | 898 | if (names_usb(dev, &names) >= 0 && names.type == NET_USB) { |
02609440 KS |
899 | char str[IFNAMSIZ]; |
900 | ||
73fc96c8 ZJS |
901 | if (names.pci_path[0] && |
902 | snprintf_ok(str, sizeof str, "%s%s%s", prefix, names.pci_path, names.usb_ports)) | |
09d04a74 | 903 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); |
02609440 | 904 | |
73fc96c8 ZJS |
905 | if (names.pci_slot[0] && |
906 | snprintf_ok(str, sizeof str, "%s%s%s", prefix, names.pci_slot, names.usb_ports)) | |
09d04a74 | 907 | udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str); |
d354690e | 908 | return 0; |
984c4348 KS |
909 | } |
910 | ||
911 | /* Broadcom bus */ | |
09d04a74 | 912 | if (names_bcma(dev, &names) >= 0 && names.type == NET_BCMA) { |
984c4348 KS |
913 | char str[IFNAMSIZ]; |
914 | ||
73fc96c8 ZJS |
915 | if (names.pci_path[0] && |
916 | snprintf_ok(str, sizeof str, "%s%s%s", prefix, names.pci_path, names.bcma_core)) | |
09d04a74 | 917 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); |
984c4348 | 918 | |
73fc96c8 ZJS |
919 | if (names.pci_slot[0] && |
920 | snprintf(str, sizeof str, "%s%s%s", prefix, names.pci_slot, names.bcma_core)) | |
09d04a74 | 921 | udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str); |
d354690e | 922 | return 0; |
02609440 | 923 | } |
09d04a74 | 924 | |
d354690e | 925 | return 0; |
a660c63c KS |
926 | } |
927 | ||
25de7aa7 | 928 | const UdevBuiltin udev_builtin_net_id = { |
a660c63c KS |
929 | .name = "net_id", |
930 | .cmd = builtin_net_id, | |
5ac0162c | 931 | .help = "Network device properties", |
a660c63c | 932 | }; |