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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 LP |
19 | #include <stdarg.h> |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
07630cea | 22 | #include <unistd.h> |
de892aea | 23 | #include <linux/pci_regs.h> |
a660c63c | 24 | |
07a26e42 | 25 | #include "alloc-util.h" |
8fb3f009 | 26 | #include "dirent-util.h" |
3ffd4af2 | 27 | #include "fd-util.h" |
a5c32cff | 28 | #include "fileio.h" |
609948c7 | 29 | #include "fs-util.h" |
35b35190 | 30 | #include "naming-scheme.h" |
9009d3b5 | 31 | #include "parse-util.h" |
f7e81fd9 | 32 | #include "proc-cmdline.h" |
d054f0a4 | 33 | #include "stdio-util.h" |
07630cea | 34 | #include "string-util.h" |
07a26e42 YW |
35 | #include "strv.h" |
36 | #include "strxcpyx.h" | |
37 | #include "udev-builtin.h" | |
a660c63c | 38 | |
6c1e69f9 LP |
39 | #define ONBOARD_INDEX_MAX (16*1024-1) |
40 | ||
02609440 KS |
41 | enum netname_type{ |
42 | NET_UNDEF, | |
43 | NET_PCI, | |
44 | NET_USB, | |
984c4348 | 45 | NET_BCMA, |
e3d56334 | 46 | NET_VIRTIO, |
ecc11cf7 | 47 | NET_CCW, |
765a00b9 | 48 | NET_VIO, |
c20e6de8 | 49 | NET_PLATFORM, |
eaa9d507 | 50 | NET_NETDEVSIM, |
02609440 KS |
51 | }; |
52 | ||
53 | struct netnames { | |
54 | enum netname_type type; | |
55 | ||
56 | uint8_t mac[6]; | |
57 | bool mac_valid; | |
58 | ||
09d04a74 | 59 | sd_device *pcidev; |
02609440 KS |
60 | char pci_slot[IFNAMSIZ]; |
61 | char pci_path[IFNAMSIZ]; | |
62 | char pci_onboard[IFNAMSIZ]; | |
63 | const char *pci_onboard_label; | |
64 | ||
02609440 | 65 | char usb_ports[IFNAMSIZ]; |
984c4348 | 66 | char bcma_core[IFNAMSIZ]; |
ecc11cf7 | 67 | char ccw_busid[IFNAMSIZ]; |
765a00b9 | 68 | char vio_slot[IFNAMSIZ]; |
c20e6de8 | 69 | char platform_path[IFNAMSIZ]; |
eaa9d507 | 70 | char netdevsim_path[IFNAMSIZ]; |
02609440 KS |
71 | }; |
72 | ||
609948c7 | 73 | struct virtfn_info { |
09d04a74 | 74 | sd_device *physfn_pcidev; |
609948c7 SH |
75 | char suffix[IFNAMSIZ]; |
76 | }; | |
77 | ||
ecc11cf7 | 78 | /* skip intermediate virtio devices */ |
09d04a74 YW |
79 | static sd_device *skip_virtio(sd_device *dev) { |
80 | sd_device *parent; | |
ecc11cf7 VM |
81 | |
82 | /* there can only ever be one virtio bus per parent device, so we can | |
09d04a74 YW |
83 | * safely ignore any virtio buses. see |
84 | * http://lists.linuxfoundation.org/pipermail/virtualization/2015-August/030331.html */ | |
85 | for (parent = dev; parent; ) { | |
86 | const char *subsystem; | |
87 | ||
88 | if (sd_device_get_subsystem(parent, &subsystem) < 0) | |
89 | break; | |
90 | ||
91 | if (!streq(subsystem, "virtio")) | |
92 | break; | |
93 | ||
94 | if (sd_device_get_parent(parent, &parent) < 0) | |
95 | return NULL; | |
96 | } | |
97 | ||
ecc11cf7 VM |
98 | return parent; |
99 | } | |
100 | ||
09d04a74 YW |
101 | static int get_virtfn_info(sd_device *dev, struct netnames *names, struct virtfn_info *ret) { |
102 | _cleanup_(sd_device_unrefp) sd_device *physfn_pcidev = NULL; | |
103 | const char *physfn_link_file, *syspath; | |
609948c7 SH |
104 | _cleanup_free_ char *physfn_pci_syspath = NULL; |
105 | _cleanup_free_ char *virtfn_pci_syspath = NULL; | |
106 | struct dirent *dent; | |
107 | _cleanup_closedir_ DIR *dir = NULL; | |
09d04a74 | 108 | char suffix[IFNAMSIZ]; |
609948c7 SH |
109 | int r; |
110 | ||
09d04a74 YW |
111 | assert(dev); |
112 | assert(names); | |
113 | assert(ret); | |
114 | ||
115 | r = sd_device_get_syspath(names->pcidev, &syspath); | |
116 | if (r < 0) | |
117 | return r; | |
118 | ||
609948c7 | 119 | /* Check if this is a virtual function. */ |
09d04a74 | 120 | physfn_link_file = strjoina(syspath, "/physfn"); |
a5648b80 | 121 | r = chase_symlinks(physfn_link_file, NULL, 0, &physfn_pci_syspath, NULL); |
609948c7 SH |
122 | if (r < 0) |
123 | return r; | |
124 | ||
125 | /* Get physical function's pci device. */ | |
09d04a74 YW |
126 | r = sd_device_new_from_syspath(&physfn_pcidev, physfn_pci_syspath); |
127 | if (r < 0) | |
128 | return r; | |
609948c7 SH |
129 | |
130 | /* Find the virtual function number by finding the right virtfn link. */ | |
131 | dir = opendir(physfn_pci_syspath); | |
09d04a74 YW |
132 | if (!dir) |
133 | return -errno; | |
134 | ||
609948c7 SH |
135 | FOREACH_DIRENT_ALL(dent, dir, break) { |
136 | _cleanup_free_ char *virtfn_link_file = NULL; | |
09d04a74 | 137 | |
609948c7 SH |
138 | if (!startswith(dent->d_name, "virtfn")) |
139 | continue; | |
09d04a74 | 140 | |
657ee2d8 | 141 | virtfn_link_file = path_join(physfn_pci_syspath, dent->d_name); |
09d04a74 YW |
142 | if (!virtfn_link_file) |
143 | return -ENOMEM; | |
144 | ||
a5648b80 | 145 | if (chase_symlinks(virtfn_link_file, NULL, 0, &virtfn_pci_syspath, NULL) < 0) |
609948c7 | 146 | continue; |
09d04a74 YW |
147 | |
148 | if (streq(syspath, virtfn_pci_syspath)) { | |
149 | if (!snprintf_ok(suffix, sizeof(suffix), "v%s", &dent->d_name[6])) | |
150 | return -ENOENT; | |
151 | ||
609948c7 SH |
152 | break; |
153 | } | |
154 | } | |
09d04a74 YW |
155 | if (isempty(suffix)) |
156 | return -ENOENT; | |
157 | ||
158 | ret->physfn_pcidev = TAKE_PTR(physfn_pcidev); | |
159 | strncpy(ret->suffix, suffix, sizeof(ret->suffix)); | |
609948c7 | 160 | |
09d04a74 | 161 | return 0; |
609948c7 SH |
162 | } |
163 | ||
0035597a | 164 | /* retrieve on-board index number and label from firmware */ |
09d04a74 | 165 | static int dev_pci_onboard(sd_device *dev, struct netnames *names) { |
614a8274 | 166 | unsigned long idx, dev_port = 0; |
09d04a74 | 167 | const char *attr, *port_name = NULL; |
c0a43734 TG |
168 | size_t l; |
169 | char *s; | |
d81186ef | 170 | int r; |
a660c63c | 171 | |
4c27f691 | 172 | /* ACPI _DSM — device specific method for naming a PCI or PCI Express device */ |
09d04a74 YW |
173 | if (sd_device_get_sysattr_value(names->pcidev, "acpi_index", &attr) < 0) { |
174 | /* SMBIOS type 41 — Onboard Devices Extended Information */ | |
175 | r = sd_device_get_sysattr_value(names->pcidev, "index", &attr); | |
176 | if (r < 0) | |
177 | return r; | |
178 | } | |
c0a43734 | 179 | |
d81186ef JH |
180 | r = safe_atolu(attr, &idx); |
181 | if (r < 0) | |
182 | return r; | |
f7e81fd9 LP |
183 | if (idx == 0 && !naming_scheme_has(NAMING_ZERO_ACPI_INDEX)) |
184 | return -EINVAL; | |
c0a43734 | 185 | |
4c27f691 ZJS |
186 | /* Some BIOSes report rubbish indexes that are excessively high (2^24-1 is an index VMware likes to |
187 | * report for example). Let's define a cut-off where we don't consider the index reliable anymore. We | |
188 | * pick some arbitrary cut-off, which is somewhere beyond the realistic number of physical network | |
189 | * interface a system might have. Ideally the kernel would already filter his crap for us, but it | |
190 | * doesn't currently. */ | |
6c1e69f9 LP |
191 | if (idx > ONBOARD_INDEX_MAX) |
192 | return -ENOENT; | |
193 | ||
309b578d | 194 | /* kernel provided port index for multiple ports on a single PCI function */ |
09d04a74 | 195 | if (sd_device_get_sysattr_value(dev, "dev_port", &attr) >= 0) |
b8e8823e | 196 | dev_port = strtoul(attr, NULL, 10); |
c0a43734 | 197 | |
4887b656 | 198 | /* kernel provided front panel port name for multiple port PCI device */ |
09d04a74 | 199 | (void) sd_device_get_sysattr_value(dev, "phys_port_name", &port_name); |
4887b656 | 200 | |
c0a43734 TG |
201 | s = names->pci_onboard; |
202 | l = sizeof(names->pci_onboard); | |
614a8274 | 203 | l = strpcpyf(&s, l, "o%lu", idx); |
4887b656 JP |
204 | if (port_name) |
205 | l = strpcpyf(&s, l, "n%s", port_name); | |
206 | else if (dev_port > 0) | |
614a8274 | 207 | l = strpcpyf(&s, l, "d%lu", dev_port); |
c0a43734 TG |
208 | if (l == 0) |
209 | names->pci_onboard[0] = '\0'; | |
d23965a6 | 210 | |
09d04a74 YW |
211 | if (sd_device_get_sysattr_value(names->pcidev, "label", &names->pci_onboard_label) < 0) |
212 | names->pci_onboard_label = NULL; | |
c0a43734 | 213 | |
0035597a KS |
214 | return 0; |
215 | } | |
d23965a6 | 216 | |
137661d8 | 217 | /* read the 256 bytes PCI configuration space to check the multi-function bit */ |
09d04a74 | 218 | static bool is_pci_multifunction(sd_device *dev) { |
0454229c | 219 | _cleanup_close_ int fd = -1; |
09d04a74 | 220 | const char *filename, *syspath; |
1cb5d1f3 | 221 | uint8_t config[64]; |
de892aea | 222 | |
09d04a74 YW |
223 | if (sd_device_get_syspath(dev, &syspath) < 0) |
224 | return false; | |
225 | ||
226 | filename = strjoina(syspath, "/config"); | |
0454229c JM |
227 | fd = open(filename, O_RDONLY | O_CLOEXEC); |
228 | if (fd < 0) | |
1cb5d1f3 | 229 | return false; |
0454229c | 230 | if (read(fd, &config, sizeof(config)) != sizeof(config)) |
1cb5d1f3 | 231 | return false; |
de892aea KS |
232 | |
233 | /* bit 0-6 header type, bit 7 multi/single function device */ | |
09d04a74 | 234 | return config[PCI_HEADER_TYPE] & 0x80; |
de892aea KS |
235 | } |
236 | ||
09d04a74 YW |
237 | static bool is_pci_ari_enabled(sd_device *dev) { |
238 | const char *a; | |
239 | ||
240 | if (sd_device_get_sysattr_value(dev, "ari_enabled", &a) < 0) | |
241 | return false; | |
242 | ||
243 | return streq(a, "1"); | |
6bc04997 SH |
244 | } |
245 | ||
09d04a74 | 246 | static int dev_pci_slot(sd_device *dev, struct netnames *names) { |
614a8274 LP |
247 | unsigned long dev_port = 0; |
248 | unsigned domain, bus, slot, func, hotplug_slot = 0; | |
1328f66a KS |
249 | size_t l; |
250 | char *s; | |
09d04a74 YW |
251 | const char *sysname, *attr, *port_name = NULL, *syspath; |
252 | _cleanup_(sd_device_unrefp) sd_device *pci = NULL; | |
253 | sd_device *hotplug_slot_dev; | |
e68eedbb | 254 | char slots[PATH_MAX]; |
b5dd8148 | 255 | _cleanup_closedir_ DIR *dir = NULL; |
0035597a | 256 | struct dirent *dent; |
09d04a74 | 257 | int r; |
0035597a | 258 | |
09d04a74 YW |
259 | r = sd_device_get_sysname(names->pcidev, &sysname); |
260 | if (r < 0) | |
261 | return r; | |
262 | ||
263 | if (sscanf(sysname, "%x:%x:%x.%u", &domain, &bus, &slot, &func) != 4) | |
0035597a | 264 | return -ENOENT; |
09d04a74 | 265 | |
f7e81fd9 LP |
266 | if (naming_scheme_has(NAMING_NPAR_ARI) && |
267 | is_pci_ari_enabled(names->pcidev)) | |
6bc04997 SH |
268 | /* ARI devices support up to 256 functions on a single device ("slot"), and interpret the |
269 | * traditional 5-bit slot and 3-bit function number as a single 8-bit function number, | |
270 | * where the slot makes up the upper 5 bits. */ | |
271 | func += slot * 8; | |
1328f66a | 272 | |
309b578d | 273 | /* kernel provided port index for multiple ports on a single PCI function */ |
09d04a74 | 274 | if (sd_device_get_sysattr_value(dev, "dev_port", &attr) >= 0) { |
b8e8823e | 275 | dev_port = strtoul(attr, NULL, 10); |
cdd63a03 AM |
276 | /* With older kernels IP-over-InfiniBand network interfaces sometimes erroneously |
277 | * provide the port number in the 'dev_id' sysfs attribute instead of 'dev_port', | |
278 | * which thus stays initialized as 0. */ | |
09d04a74 YW |
279 | if (dev_port == 0 && |
280 | sd_device_get_sysattr_value(dev, "type", &attr) >= 0) { | |
281 | unsigned long type; | |
282 | ||
283 | type = strtoul(attr, NULL, 10); | |
284 | if (type == ARPHRD_INFINIBAND && | |
285 | sd_device_get_sysattr_value(dev, "dev_id", &attr) >= 0) | |
286 | dev_port = strtoul(attr, NULL, 16); | |
cdd63a03 AM |
287 | } |
288 | } | |
1328f66a | 289 | |
1b2a7d92 | 290 | /* kernel provided front panel port name for multi-port PCI device */ |
09d04a74 | 291 | (void) sd_device_get_sysattr_value(dev, "phys_port_name", &port_name); |
4887b656 | 292 | |
1328f66a KS |
293 | /* compose a name based on the raw kernel's PCI bus, slot numbers */ |
294 | s = names->pci_path; | |
214daa72 SM |
295 | l = sizeof(names->pci_path); |
296 | if (domain > 0) | |
1fa2f38f ZJS |
297 | l = strpcpyf(&s, l, "P%u", domain); |
298 | l = strpcpyf(&s, l, "p%us%u", bus, slot); | |
1328f66a | 299 | if (func > 0 || is_pci_multifunction(names->pcidev)) |
1fa2f38f | 300 | l = strpcpyf(&s, l, "f%u", func); |
4887b656 JP |
301 | if (port_name) |
302 | l = strpcpyf(&s, l, "n%s", port_name); | |
303 | else if (dev_port > 0) | |
614a8274 | 304 | l = strpcpyf(&s, l, "d%lu", dev_port); |
1328f66a KS |
305 | if (l == 0) |
306 | names->pci_path[0] = '\0'; | |
d23965a6 | 307 | |
1b2a7d92 | 308 | /* ACPI _SUN — slot user number */ |
09d04a74 YW |
309 | r = sd_device_new_from_subsystem_sysname(&pci, "subsystem", "pci"); |
310 | if (r < 0) | |
311 | return r; | |
e68eedbb | 312 | |
09d04a74 YW |
313 | r = sd_device_get_syspath(pci, &syspath); |
314 | if (r < 0) | |
315 | return r; | |
316 | if (!snprintf_ok(slots, sizeof slots, "%s/slots", syspath)) | |
73fc96c8 ZJS |
317 | return -ENAMETOOLONG; |
318 | ||
0035597a | 319 | dir = opendir(slots); |
cc5bbdb2 ZJS |
320 | if (!dir) |
321 | return -errno; | |
d23965a6 | 322 | |
9009d3b5 SH |
323 | hotplug_slot_dev = names->pcidev; |
324 | while (hotplug_slot_dev) { | |
09d04a74 YW |
325 | if (sd_device_get_sysname(hotplug_slot_dev, &sysname) < 0) |
326 | continue; | |
327 | ||
9009d3b5 SH |
328 | FOREACH_DIRENT_ALL(dent, dir, break) { |
329 | unsigned i; | |
9009d3b5 SH |
330 | char str[PATH_MAX]; |
331 | _cleanup_free_ char *address = NULL; | |
332 | ||
333 | if (dent->d_name[0] == '.') | |
334 | continue; | |
335 | r = safe_atou_full(dent->d_name, 10, &i); | |
09d04a74 | 336 | if (r < 0 || i <= 0) |
9009d3b5 SH |
337 | continue; |
338 | ||
09d04a74 | 339 | /* match slot address with device by stripping the function */ |
9009d3b5 | 340 | if (snprintf_ok(str, sizeof str, "%s/%s/address", slots, dent->d_name) && |
09d04a74 YW |
341 | read_one_line_file(str, &address) >= 0 && |
342 | startswith(sysname, address)) { | |
343 | hotplug_slot = i; | |
9009d3b5 | 344 | break; |
09d04a74 | 345 | } |
9009d3b5 | 346 | } |
0035597a KS |
347 | if (hotplug_slot > 0) |
348 | break; | |
09d04a74 YW |
349 | if (sd_device_get_parent_with_subsystem_devtype(hotplug_slot_dev, "pci", NULL, &hotplug_slot_dev) < 0) |
350 | break; | |
9009d3b5 | 351 | rewinddir(dir); |
0035597a | 352 | } |
d23965a6 | 353 | |
0035597a | 354 | if (hotplug_slot > 0) { |
1328f66a | 355 | s = names->pci_slot; |
214daa72 SM |
356 | l = sizeof(names->pci_slot); |
357 | if (domain > 0) | |
358 | l = strpcpyf(&s, l, "P%d", domain); | |
359 | l = strpcpyf(&s, l, "s%d", hotplug_slot); | |
1328f66a | 360 | if (func > 0 || is_pci_multifunction(names->pcidev)) |
d5a89d7d | 361 | l = strpcpyf(&s, l, "f%d", func); |
4887b656 JP |
362 | if (port_name) |
363 | l = strpcpyf(&s, l, "n%s", port_name); | |
364 | else if (dev_port > 0) | |
614a8274 | 365 | l = strpcpyf(&s, l, "d%lu", dev_port); |
1328f66a | 366 | if (l == 0) |
16f948cb | 367 | names->pci_slot[0] = '\0'; |
d23965a6 | 368 | } |
cc5bbdb2 ZJS |
369 | |
370 | return 0; | |
0035597a KS |
371 | } |
372 | ||
09d04a74 YW |
373 | static int names_vio(sd_device *dev, struct netnames *names) { |
374 | sd_device *parent; | |
765a00b9 | 375 | unsigned busid, slotid, ethid; |
09d04a74 YW |
376 | const char *syspath, *subsystem; |
377 | int r; | |
765a00b9 FB |
378 | |
379 | /* check if our direct parent is a VIO device with no other bus in-between */ | |
09d04a74 YW |
380 | r = sd_device_get_parent(dev, &parent); |
381 | if (r < 0) | |
382 | return r; | |
765a00b9 | 383 | |
09d04a74 YW |
384 | r = sd_device_get_subsystem(parent, &subsystem); |
385 | if (r < 0) | |
386 | return r; | |
387 | if (!streq("vio", subsystem)) | |
388 | return -ENOENT; | |
765a00b9 FB |
389 | |
390 | /* The devices' $DEVPATH number is tied to (virtual) hardware (slot id | |
391 | * selected in the HMC), thus this provides a reliable naming (e.g. | |
392 | * "/devices/vio/30000002/net/eth1"); we ignore the bus number, as | |
393 | * there should only ever be one bus, and then remove leading zeros. */ | |
09d04a74 YW |
394 | r = sd_device_get_syspath(dev, &syspath); |
395 | if (r < 0) | |
396 | return r; | |
765a00b9 FB |
397 | |
398 | if (sscanf(syspath, "/sys/devices/vio/%4x%4x/net/eth%u", &busid, &slotid, ðid) != 3) | |
399 | return -EINVAL; | |
400 | ||
401 | xsprintf(names->vio_slot, "v%u", slotid); | |
402 | names->type = NET_VIO; | |
403 | return 0; | |
404 | } | |
405 | ||
c20e6de8 DJL |
406 | #define _PLATFORM_TEST "/sys/devices/platform/vvvvPPPP" |
407 | #define _PLATFORM_PATTERN4 "/sys/devices/platform/%4s%4x:%2x/net/eth%u" | |
408 | #define _PLATFORM_PATTERN3 "/sys/devices/platform/%3s%4x:%2x/net/eth%u" | |
409 | ||
09d04a74 YW |
410 | static int names_platform(sd_device *dev, struct netnames *names, bool test) { |
411 | sd_device *parent; | |
c20e6de8 DJL |
412 | char vendor[5]; |
413 | unsigned model, instance, ethid; | |
09d04a74 YW |
414 | const char *syspath, *pattern, *validchars, *subsystem; |
415 | int r; | |
c20e6de8 DJL |
416 | |
417 | /* check if our direct parent is a platform device with no other bus in-between */ | |
09d04a74 YW |
418 | r = sd_device_get_parent(dev, &parent); |
419 | if (r < 0) | |
420 | return r; | |
421 | ||
422 | r = sd_device_get_subsystem(parent, &subsystem); | |
423 | if (r < 0) | |
424 | return r; | |
c20e6de8 | 425 | |
09d04a74 | 426 | if (!streq("platform", subsystem)) |
c20e6de8 DJL |
427 | return -ENOENT; |
428 | ||
09d04a74 YW |
429 | r = sd_device_get_syspath(dev, &syspath); |
430 | if (r < 0) | |
431 | return r; | |
c20e6de8 DJL |
432 | |
433 | /* syspath is too short, to have a valid ACPI instance */ | |
434 | if (strlen(syspath) < sizeof _PLATFORM_TEST) | |
435 | return -EINVAL; | |
436 | ||
437 | /* Vendor ID can be either PNP ID (3 chars A-Z) or ACPI ID (4 chars A-Z and numerals) */ | |
438 | if (syspath[sizeof _PLATFORM_TEST - 1] == ':') { | |
439 | pattern = _PLATFORM_PATTERN4; | |
440 | validchars = UPPERCASE_LETTERS DIGITS; | |
441 | } else { | |
442 | pattern = _PLATFORM_PATTERN3; | |
443 | validchars = UPPERCASE_LETTERS; | |
444 | } | |
445 | ||
446 | /* Platform devices are named after ACPI table match, and instance id | |
447 | * eg. "/sys/devices/platform/HISI00C2:00"); | |
448 | * The Vendor (3 or 4 char), followed by hexdecimal model number : instance id. | |
449 | */ | |
86a48fb6 LP |
450 | |
451 | #pragma GCC diagnostic push | |
452 | #pragma GCC diagnostic ignored "-Wformat-nonliteral" | |
c20e6de8 DJL |
453 | if (sscanf(syspath, pattern, vendor, &model, &instance, ðid) != 4) |
454 | return -EINVAL; | |
86a48fb6 | 455 | #pragma GCC diagnostic pop |
c20e6de8 DJL |
456 | |
457 | if (!in_charset(vendor, validchars)) | |
458 | return -ENOENT; | |
459 | ||
460 | ascii_strlower(vendor); | |
461 | ||
462 | xsprintf(names->platform_path, "a%s%xi%u", vendor, model, instance); | |
463 | names->type = NET_PLATFORM; | |
464 | return 0; | |
465 | } | |
466 | ||
09d04a74 YW |
467 | static int names_pci(sd_device *dev, struct netnames *names) { |
468 | sd_device *parent; | |
609948c7 SH |
469 | struct netnames vf_names = {}; |
470 | struct virtfn_info vf_info = {}; | |
09d04a74 YW |
471 | const char *subsystem; |
472 | int r; | |
0035597a | 473 | |
3b64e4d4 TG |
474 | assert(dev); |
475 | assert(names); | |
476 | ||
09d04a74 YW |
477 | r = sd_device_get_parent(dev, &parent); |
478 | if (r < 0) | |
479 | return r; | |
ecc11cf7 VM |
480 | /* skip virtio subsystem if present */ |
481 | parent = skip_virtio(parent); | |
54683f0f | 482 | |
02609440 KS |
483 | if (!parent) |
484 | return -ENOENT; | |
54683f0f | 485 | |
02609440 | 486 | /* check if our direct parent is a PCI device with no other bus in-between */ |
09d04a74 YW |
487 | if (sd_device_get_subsystem(parent, &subsystem) >= 0 && |
488 | streq("pci", subsystem)) { | |
02609440 KS |
489 | names->type = NET_PCI; |
490 | names->pcidev = parent; | |
491 | } else { | |
09d04a74 YW |
492 | r = sd_device_get_parent_with_subsystem_devtype(dev, "pci", NULL, &names->pcidev); |
493 | if (r < 0) | |
494 | return r; | |
02609440 | 495 | } |
609948c7 | 496 | |
f7e81fd9 LP |
497 | if (naming_scheme_has(NAMING_SR_IOV_V) && |
498 | get_virtfn_info(dev, names, &vf_info) >= 0) { | |
609948c7 SH |
499 | /* If this is an SR-IOV virtual device, get base name using physical device and add virtfn suffix. */ |
500 | vf_names.pcidev = vf_info.physfn_pcidev; | |
501 | dev_pci_onboard(dev, &vf_names); | |
502 | dev_pci_slot(dev, &vf_names); | |
503 | if (vf_names.pci_onboard[0]) | |
504 | if (strlen(vf_names.pci_onboard) + strlen(vf_info.suffix) < sizeof(names->pci_onboard)) | |
505 | strscpyl(names->pci_onboard, sizeof(names->pci_onboard), | |
506 | vf_names.pci_onboard, vf_info.suffix, NULL); | |
507 | if (vf_names.pci_slot[0]) | |
508 | if (strlen(vf_names.pci_slot) + strlen(vf_info.suffix) < sizeof(names->pci_slot)) | |
509 | strscpyl(names->pci_slot, sizeof(names->pci_slot), | |
510 | vf_names.pci_slot, vf_info.suffix, NULL); | |
511 | if (vf_names.pci_path[0]) | |
512 | if (strlen(vf_names.pci_path) + strlen(vf_info.suffix) < sizeof(names->pci_path)) | |
513 | strscpyl(names->pci_path, sizeof(names->pci_path), | |
514 | vf_names.pci_path, vf_info.suffix, NULL); | |
09d04a74 | 515 | sd_device_unref(vf_info.physfn_pcidev); |
609948c7 SH |
516 | } else { |
517 | dev_pci_onboard(dev, names); | |
518 | dev_pci_slot(dev, names); | |
519 | } | |
09d04a74 | 520 | |
02609440 KS |
521 | return 0; |
522 | } | |
523 | ||
09d04a74 YW |
524 | static int names_usb(sd_device *dev, struct netnames *names) { |
525 | sd_device *usbdev; | |
526 | char name[256], *ports, *config, *interf, *s; | |
527 | const char *sysname; | |
02609440 | 528 | size_t l; |
09d04a74 | 529 | int r; |
02609440 | 530 | |
3b64e4d4 TG |
531 | assert(dev); |
532 | assert(names); | |
533 | ||
09d04a74 YW |
534 | r = sd_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_interface", &usbdev); |
535 | if (r < 0) | |
536 | return r; | |
537 | ||
538 | r = sd_device_get_sysname(usbdev, &sysname); | |
539 | if (r < 0) | |
540 | return r; | |
0035597a | 541 | |
02609440 | 542 | /* get USB port number chain, configuration, interface */ |
09d04a74 | 543 | strscpy(name, sizeof(name), sysname); |
02609440 KS |
544 | s = strchr(name, '-'); |
545 | if (!s) | |
546 | return -EINVAL; | |
547 | ports = s+1; | |
548 | ||
549 | s = strchr(ports, ':'); | |
550 | if (!s) | |
551 | return -EINVAL; | |
552 | s[0] = '\0'; | |
553 | config = s+1; | |
554 | ||
555 | s = strchr(config, '.'); | |
556 | if (!s) | |
557 | return -EINVAL; | |
558 | s[0] = '\0'; | |
559 | interf = s+1; | |
560 | ||
f7340ab2 | 561 | /* prefix every port number in the chain with "u" */ |
02609440 KS |
562 | s = ports; |
563 | while ((s = strchr(s, '.'))) | |
564 | s[0] = 'u'; | |
565 | s = names->usb_ports; | |
d5a89d7d | 566 | l = strpcpyl(&s, sizeof(names->usb_ports), "u", ports, NULL); |
02609440 KS |
567 | |
568 | /* append USB config number, suppress the common config == 1 */ | |
569 | if (!streq(config, "1")) | |
d5a89d7d | 570 | l = strpcpyl(&s, sizeof(names->usb_ports), "c", config, NULL); |
02609440 KS |
571 | |
572 | /* append USB interface number, suppress the interface == 0 */ | |
573 | if (!streq(interf, "0")) | |
d5a89d7d | 574 | l = strpcpyl(&s, sizeof(names->usb_ports), "i", interf, NULL); |
02609440 KS |
575 | if (l == 0) |
576 | return -ENAMETOOLONG; | |
577 | ||
578 | names->type = NET_USB; | |
d23965a6 KS |
579 | return 0; |
580 | } | |
581 | ||
09d04a74 YW |
582 | static int names_bcma(sd_device *dev, struct netnames *names) { |
583 | sd_device *bcmadev; | |
14cb109d | 584 | unsigned core; |
09d04a74 YW |
585 | const char *sysname; |
586 | int r; | |
984c4348 | 587 | |
3b64e4d4 TG |
588 | assert(dev); |
589 | assert(names); | |
590 | ||
09d04a74 YW |
591 | r = sd_device_get_parent_with_subsystem_devtype(dev, "bcma", NULL, &bcmadev); |
592 | if (r < 0) | |
593 | return r; | |
594 | ||
595 | r = sd_device_get_sysname(bcmadev, &sysname); | |
596 | if (r < 0) | |
597 | return r; | |
984c4348 | 598 | |
f4ddacbd | 599 | /* bus num:core num */ |
09d04a74 | 600 | if (sscanf(sysname, "bcma%*u:%u", &core) != 1) |
984c4348 | 601 | return -EINVAL; |
f4ddacbd KS |
602 | /* suppress the common core == 0 */ |
603 | if (core > 0) | |
d054f0a4 | 604 | xsprintf(names->bcma_core, "b%u", core); |
f4ddacbd | 605 | |
984c4348 KS |
606 | names->type = NET_BCMA; |
607 | return 0; | |
608 | } | |
609 | ||
09d04a74 YW |
610 | static int names_ccw(sd_device *dev, struct netnames *names) { |
611 | sd_device *cdev; | |
3877500c | 612 | const char *bus_id, *subsys; |
e0d4a0ac | 613 | size_t bus_id_len; |
ecc11cf7 | 614 | size_t bus_id_start; |
09d04a74 | 615 | int r; |
e0d4a0ac | 616 | |
3b64e4d4 TG |
617 | assert(dev); |
618 | assert(names); | |
619 | ||
e0d4a0ac | 620 | /* Retrieve the associated CCW device */ |
09d04a74 YW |
621 | r = sd_device_get_parent(dev, &cdev); |
622 | if (r < 0) | |
623 | return r; | |
624 | ||
ecc11cf7 VM |
625 | /* skip virtio subsystem if present */ |
626 | cdev = skip_virtio(cdev); | |
e0d4a0ac HB |
627 | if (!cdev) |
628 | return -ENOENT; | |
629 | ||
09d04a74 YW |
630 | r = sd_device_get_subsystem(cdev, &subsys); |
631 | if (r < 0) | |
632 | return r; | |
633 | ||
ecc11cf7 | 634 | /* Network devices are either single or grouped CCW devices */ |
09d04a74 | 635 | if (!STR_IN_SET(subsys, "ccwgroup", "ccw")) |
e0d4a0ac HB |
636 | return -ENOENT; |
637 | ||
ecc11cf7 | 638 | /* Retrieve bus-ID of the CCW device. The bus-ID uniquely |
e0d4a0ac HB |
639 | * identifies the network device on the Linux on System z channel |
640 | * subsystem. Note that the bus-ID contains lowercase characters. | |
641 | */ | |
09d04a74 YW |
642 | r = sd_device_get_sysname(cdev, &bus_id); |
643 | if (r < 0) | |
644 | return r; | |
e0d4a0ac | 645 | |
4c27f691 ZJS |
646 | /* Check the length of the bus-ID. Rely on the fact that the kernel provides a correct bus-ID; |
647 | * alternatively, improve this check and parse and verify each bus-ID part... | |
e0d4a0ac HB |
648 | */ |
649 | bus_id_len = strlen(bus_id); | |
977f65f0 | 650 | if (!IN_SET(bus_id_len, 8, 9)) |
e0d4a0ac HB |
651 | return -EINVAL; |
652 | ||
0037a669 DJL |
653 | /* Strip leading zeros from the bus id for aesthetic purposes. This |
654 | * keeps the ccw names stable, yet much shorter in general case of | |
655 | * bus_id 0.0.0600 -> 600. This is similar to e.g. how PCI domain is | |
ecc11cf7 | 656 | * not prepended when it is zero. Preserve the last 0 for 0.0.0000. |
0037a669 | 657 | */ |
ecc11cf7 VM |
658 | bus_id_start = strspn(bus_id, ".0"); |
659 | bus_id += bus_id_start < bus_id_len ? bus_id_start : bus_id_len - 1; | |
0037a669 | 660 | |
e0d4a0ac | 661 | /* Store the CCW bus-ID for use as network device name */ |
73fc96c8 | 662 | if (snprintf_ok(names->ccw_busid, sizeof(names->ccw_busid), "c%s", bus_id)) |
ecc11cf7 | 663 | names->type = NET_CCW; |
73fc96c8 | 664 | |
e0d4a0ac HB |
665 | return 0; |
666 | } | |
667 | ||
09d04a74 | 668 | static int names_mac(sd_device *dev, struct netnames *names) { |
d23965a6 | 669 | const char *s; |
614a8274 | 670 | unsigned long i; |
14cb109d | 671 | unsigned a1, a2, a3, a4, a5, a6; |
09d04a74 | 672 | int r; |
d23965a6 | 673 | |
a0d415da AM |
674 | /* Some kinds of devices tend to have hardware addresses |
675 | * that are impossible to use in an iface name. | |
676 | */ | |
09d04a74 YW |
677 | r = sd_device_get_sysattr_value(dev, "type", &s); |
678 | if (r < 0) | |
679 | return r; | |
680 | ||
a0d415da AM |
681 | i = strtoul(s, NULL, 0); |
682 | switch (i) { | |
683 | /* The persistent part of a hardware address of an InfiniBand NIC | |
684 | * is 8 bytes long. We cannot fit this much in an iface name. | |
685 | */ | |
686 | case ARPHRD_INFINIBAND: | |
687 | return -EINVAL; | |
688 | default: | |
689 | break; | |
690 | } | |
691 | ||
d23965a6 | 692 | /* check for NET_ADDR_PERM, skip random MAC addresses */ |
09d04a74 YW |
693 | r = sd_device_get_sysattr_value(dev, "addr_assign_type", &s); |
694 | if (r < 0) | |
695 | return r; | |
d23965a6 KS |
696 | i = strtoul(s, NULL, 0); |
697 | if (i != 0) | |
698 | return 0; | |
699 | ||
09d04a74 YW |
700 | r = sd_device_get_sysattr_value(dev, "address", &s); |
701 | if (r < 0) | |
702 | return r; | |
d23965a6 KS |
703 | if (sscanf(s, "%x:%x:%x:%x:%x:%x", &a1, &a2, &a3, &a4, &a5, &a6) != 6) |
704 | return -EINVAL; | |
705 | ||
706 | /* skip empty MAC addresses */ | |
707 | if (a1 + a2 + a3 + a4 + a5 + a6 == 0) | |
a660c63c KS |
708 | return -EINVAL; |
709 | ||
02609440 KS |
710 | names->mac[0] = a1; |
711 | names->mac[1] = a2; | |
712 | names->mac[2] = a3; | |
713 | names->mac[3] = a4; | |
714 | names->mac[4] = a5; | |
715 | names->mac[5] = a6; | |
716 | names->mac_valid = true; | |
717 | return 0; | |
718 | } | |
d23965a6 | 719 | |
eaa9d507 JP |
720 | static int names_netdevsim(sd_device *dev, struct netnames *names) { |
721 | sd_device *netdevsimdev; | |
722 | const char *sysname; | |
723 | unsigned addr; | |
724 | const char *port_name = NULL; | |
725 | int r; | |
726 | bool ok; | |
727 | ||
728 | if (!naming_scheme_has(NAMING_NETDEVSIM)) | |
729 | return 0; | |
730 | ||
731 | assert(dev); | |
732 | assert(names); | |
733 | ||
734 | r = sd_device_get_parent_with_subsystem_devtype(dev, "netdevsim", NULL, &netdevsimdev); | |
735 | if (r < 0) | |
736 | return r; | |
737 | r = sd_device_get_sysname(netdevsimdev, &sysname); | |
738 | if (r < 0) | |
739 | return r; | |
740 | ||
741 | if (sscanf(sysname, "netdevsim%u", &addr) != 1) | |
742 | return -EINVAL; | |
743 | ||
744 | r = sd_device_get_sysattr_value(dev, "phys_port_name", &port_name); | |
745 | if (r < 0) | |
746 | return r; | |
747 | ||
748 | ok = snprintf_ok(names->netdevsim_path, sizeof(names->netdevsim_path), "i%un%s", addr, port_name); | |
749 | if (!ok) | |
750 | return -ENOBUFS; | |
751 | ||
752 | names->type = NET_NETDEVSIM; | |
753 | ||
754 | return 0; | |
755 | } | |
756 | ||
02609440 | 757 | /* IEEE Organizationally Unique Identifier vendor string */ |
09d04a74 | 758 | static int ieee_oui(sd_device *dev, struct netnames *names, bool test) { |
971e7fb6 | 759 | char str[32]; |
02609440 | 760 | |
971e7fb6 | 761 | if (!names->mac_valid) |
02609440 KS |
762 | return -ENOENT; |
763 | /* skip commonly misused 00:00:00 (Xerox) prefix */ | |
764 | if (memcmp(names->mac, "\0\0\0", 3) == 0) | |
765 | return -EINVAL; | |
d054f0a4 DM |
766 | xsprintf(str, "OUI:%02X%02X%02X%02X%02X%02X", names->mac[0], |
767 | names->mac[1], names->mac[2], names->mac[3], names->mac[4], | |
768 | names->mac[5]); | |
09d04a74 | 769 | udev_builtin_hwdb_lookup(dev, NULL, str, NULL, test); |
02609440 | 770 | return 0; |
a660c63c KS |
771 | } |
772 | ||
3fc2e9a2 | 773 | static int builtin_net_id(sd_device *dev, int argc, char *argv[], bool test) { |
09d04a74 | 774 | const char *s, *p, *devtype, *prefix = "en"; |
b92bea5d | 775 | struct netnames names = {}; |
09d04a74 YW |
776 | unsigned long i; |
777 | int r; | |
d23965a6 | 778 | |
09d04a74 YW |
779 | /* handle only ARPHRD_ETHER, ARPHRD_SLIP and ARPHRD_INFINIBAND devices */ |
780 | r = sd_device_get_sysattr_value(dev, "type", &s); | |
781 | if (r < 0) | |
d354690e | 782 | return r; |
09d04a74 | 783 | |
d23965a6 | 784 | i = strtoul(s, NULL, 0); |
e0d4a0ac | 785 | switch (i) { |
19aa72f7 | 786 | case ARPHRD_ETHER: |
e0d4a0ac HB |
787 | prefix = "en"; |
788 | break; | |
938d30aa | 789 | case ARPHRD_INFINIBAND: |
f7e81fd9 LP |
790 | if (naming_scheme_has(NAMING_INFINIBAND)) |
791 | prefix = "ib"; | |
792 | else | |
793 | return 0; | |
938d30aa | 794 | break; |
19aa72f7 | 795 | case ARPHRD_SLIP: |
e0d4a0ac HB |
796 | prefix = "sl"; |
797 | break; | |
798 | default: | |
d23965a6 | 799 | return 0; |
e0d4a0ac | 800 | } |
d23965a6 | 801 | |
72bc96f0 | 802 | /* skip stacked devices, like VLANs, ... */ |
09d04a74 YW |
803 | r = sd_device_get_sysattr_value(dev, "ifindex", &s); |
804 | if (r < 0) | |
d354690e | 805 | return r; |
09d04a74 YW |
806 | r = sd_device_get_sysattr_value(dev, "iflink", &p); |
807 | if (r < 0) | |
d354690e | 808 | return r; |
090be865 | 809 | if (!streq(s, p)) |
72bc96f0 KS |
810 | return 0; |
811 | ||
09d04a74 | 812 | if (sd_device_get_devtype(dev, &devtype) >= 0) { |
d23965a6 KS |
813 | if (streq("wlan", devtype)) |
814 | prefix = "wl"; | |
815 | else if (streq("wwan", devtype)) | |
816 | prefix = "ww"; | |
817 | } | |
818 | ||
f7e81fd9 LP |
819 | udev_builtin_add_property(dev, test, "ID_NET_NAMING_SCHEME", naming_scheme()->name); |
820 | ||
09d04a74 YW |
821 | r = names_mac(dev, &names); |
822 | if (r >= 0 && names.mac_valid) { | |
02609440 KS |
823 | char str[IFNAMSIZ]; |
824 | ||
d054f0a4 | 825 | xsprintf(str, "%sx%02x%02x%02x%02x%02x%02x", prefix, |
02609440 KS |
826 | names.mac[0], names.mac[1], names.mac[2], |
827 | names.mac[3], names.mac[4], names.mac[5]); | |
09d04a74 | 828 | udev_builtin_add_property(dev, test, "ID_NET_NAME_MAC", str); |
02609440 KS |
829 | |
830 | ieee_oui(dev, &names, test); | |
831 | } | |
832 | ||
e0d4a0ac | 833 | /* get path names for Linux on System z network devices */ |
09d04a74 | 834 | if (names_ccw(dev, &names) >= 0 && names.type == NET_CCW) { |
e0d4a0ac HB |
835 | char str[IFNAMSIZ]; |
836 | ||
73fc96c8 | 837 | if (snprintf_ok(str, sizeof str, "%s%s", prefix, names.ccw_busid)) |
09d04a74 | 838 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); |
d354690e | 839 | return 0; |
e0d4a0ac HB |
840 | } |
841 | ||
765a00b9 | 842 | /* get ibmveth/ibmvnic slot-based names. */ |
09d04a74 | 843 | if (names_vio(dev, &names) >= 0 && names.type == NET_VIO) { |
765a00b9 FB |
844 | char str[IFNAMSIZ]; |
845 | ||
73fc96c8 | 846 | if (snprintf_ok(str, sizeof str, "%s%s", prefix, names.vio_slot)) |
09d04a74 | 847 | udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str); |
d354690e | 848 | return 0; |
765a00b9 FB |
849 | } |
850 | ||
c20e6de8 | 851 | /* get ACPI path names for ARM64 platform devices */ |
09d04a74 | 852 | if (names_platform(dev, &names, test) >= 0 && names.type == NET_PLATFORM) { |
c20e6de8 DJL |
853 | char str[IFNAMSIZ]; |
854 | ||
73fc96c8 | 855 | if (snprintf_ok(str, sizeof str, "%s%s", prefix, names.platform_path)) |
09d04a74 | 856 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); |
d354690e | 857 | return 0; |
c20e6de8 DJL |
858 | } |
859 | ||
eaa9d507 JP |
860 | /* get netdevsim path names */ |
861 | if (names_netdevsim(dev, &names) >= 0 && names.type == NET_NETDEVSIM) { | |
862 | char str[IFNAMSIZ]; | |
863 | ||
864 | if (snprintf_ok(str, sizeof str, "%s%s", prefix, names.netdevsim_path)) | |
865 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); | |
866 | ||
867 | return 0; | |
868 | } | |
869 | ||
02609440 | 870 | /* get PCI based path names, we compose only PCI based paths */ |
09d04a74 | 871 | if (names_pci(dev, &names) < 0) |
d354690e | 872 | return 0; |
02609440 KS |
873 | |
874 | /* plain PCI device */ | |
875 | if (names.type == NET_PCI) { | |
876 | char str[IFNAMSIZ]; | |
877 | ||
73fc96c8 ZJS |
878 | if (names.pci_onboard[0] && |
879 | snprintf_ok(str, sizeof str, "%s%s", prefix, names.pci_onboard)) | |
09d04a74 | 880 | udev_builtin_add_property(dev, test, "ID_NET_NAME_ONBOARD", str); |
02609440 | 881 | |
73fc96c8 | 882 | if (names.pci_onboard_label && |
8c053c83 ZJS |
883 | snprintf_ok(str, sizeof str, "%s%s", |
884 | naming_scheme_has(NAMING_LABEL_NOPREFIX) ? "" : prefix, | |
885 | names.pci_onboard_label)) | |
09d04a74 | 886 | udev_builtin_add_property(dev, test, "ID_NET_LABEL_ONBOARD", str); |
02609440 | 887 | |
73fc96c8 ZJS |
888 | if (names.pci_path[0] && |
889 | snprintf_ok(str, sizeof str, "%s%s", prefix, names.pci_path)) | |
09d04a74 | 890 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); |
02609440 | 891 | |
73fc96c8 ZJS |
892 | if (names.pci_slot[0] && |
893 | snprintf_ok(str, sizeof str, "%s%s", prefix, names.pci_slot)) | |
09d04a74 | 894 | udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str); |
d354690e | 895 | return 0; |
02609440 KS |
896 | } |
897 | ||
898 | /* USB device */ | |
09d04a74 | 899 | if (names_usb(dev, &names) >= 0 && names.type == NET_USB) { |
02609440 KS |
900 | char str[IFNAMSIZ]; |
901 | ||
73fc96c8 ZJS |
902 | if (names.pci_path[0] && |
903 | snprintf_ok(str, sizeof str, "%s%s%s", prefix, names.pci_path, names.usb_ports)) | |
09d04a74 | 904 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); |
02609440 | 905 | |
73fc96c8 ZJS |
906 | if (names.pci_slot[0] && |
907 | snprintf_ok(str, sizeof str, "%s%s%s", prefix, names.pci_slot, names.usb_ports)) | |
09d04a74 | 908 | udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str); |
d354690e | 909 | return 0; |
984c4348 KS |
910 | } |
911 | ||
912 | /* Broadcom bus */ | |
09d04a74 | 913 | if (names_bcma(dev, &names) >= 0 && names.type == NET_BCMA) { |
984c4348 KS |
914 | char str[IFNAMSIZ]; |
915 | ||
73fc96c8 ZJS |
916 | if (names.pci_path[0] && |
917 | snprintf_ok(str, sizeof str, "%s%s%s", prefix, names.pci_path, names.bcma_core)) | |
09d04a74 | 918 | udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str); |
984c4348 | 919 | |
73fc96c8 ZJS |
920 | if (names.pci_slot[0] && |
921 | snprintf(str, sizeof str, "%s%s%s", prefix, names.pci_slot, names.bcma_core)) | |
09d04a74 | 922 | udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str); |
d354690e | 923 | return 0; |
02609440 | 924 | } |
09d04a74 | 925 | |
d354690e | 926 | return 0; |
a660c63c KS |
927 | } |
928 | ||
25de7aa7 | 929 | const UdevBuiltin udev_builtin_net_id = { |
a660c63c KS |
930 | .name = "net_id", |
931 | .cmd = builtin_net_id, | |
5ac0162c | 932 | .help = "Network device properties", |
a660c63c | 933 | }; |