Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * net-sysfs.c - network device class and attributes | |
3 | * | |
4 | * Copyright (c) 2003 Stephen Hemminger <shemminger@osdl.org> | |
4ec93edb | 5 | * |
1da177e4 LT |
6 | * This program is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
4fc268d2 | 12 | #include <linux/capability.h> |
1da177e4 LT |
13 | #include <linux/kernel.h> |
14 | #include <linux/netdevice.h> | |
aecbe01e | 15 | #include <net/switchdev.h> |
1da177e4 | 16 | #include <linux/if_arp.h> |
5a0e3ad6 | 17 | #include <linux/slab.h> |
608b4b95 | 18 | #include <linux/nsproxy.h> |
1da177e4 | 19 | #include <net/sock.h> |
608b4b95 | 20 | #include <net/net_namespace.h> |
1da177e4 | 21 | #include <linux/rtnetlink.h> |
fec5e652 | 22 | #include <linux/vmalloc.h> |
bc3b2d7f | 23 | #include <linux/export.h> |
114cf580 | 24 | #include <linux/jiffies.h> |
9802c8e2 | 25 | #include <linux/pm_runtime.h> |
aa836df9 | 26 | #include <linux/of.h> |
1da177e4 | 27 | |
342709ef PE |
28 | #include "net-sysfs.h" |
29 | ||
8b41d188 | 30 | #ifdef CONFIG_SYSFS |
1da177e4 | 31 | static const char fmt_hex[] = "%#x\n"; |
d1102b59 | 32 | static const char fmt_long_hex[] = "%#lx\n"; |
1da177e4 LT |
33 | static const char fmt_dec[] = "%d\n"; |
34 | static const char fmt_ulong[] = "%lu\n"; | |
be1f3c2c | 35 | static const char fmt_u64[] = "%llu\n"; |
1da177e4 | 36 | |
4ec93edb | 37 | static inline int dev_isalive(const struct net_device *dev) |
1da177e4 | 38 | { |
fe9925b5 | 39 | return dev->reg_state <= NETREG_REGISTERED; |
1da177e4 LT |
40 | } |
41 | ||
42 | /* use same locking rules as GIF* ioctl's */ | |
43cb76d9 GKH |
43 | static ssize_t netdev_show(const struct device *dev, |
44 | struct device_attribute *attr, char *buf, | |
1da177e4 LT |
45 | ssize_t (*format)(const struct net_device *, char *)) |
46 | { | |
6b53dafe | 47 | struct net_device *ndev = to_net_dev(dev); |
1da177e4 LT |
48 | ssize_t ret = -EINVAL; |
49 | ||
50 | read_lock(&dev_base_lock); | |
6b53dafe WC |
51 | if (dev_isalive(ndev)) |
52 | ret = (*format)(ndev, buf); | |
1da177e4 LT |
53 | read_unlock(&dev_base_lock); |
54 | ||
55 | return ret; | |
56 | } | |
57 | ||
58 | /* generate a show function for simple field */ | |
59 | #define NETDEVICE_SHOW(field, format_string) \ | |
6b53dafe | 60 | static ssize_t format_##field(const struct net_device *dev, char *buf) \ |
1da177e4 | 61 | { \ |
6b53dafe | 62 | return sprintf(buf, format_string, dev->field); \ |
1da177e4 | 63 | } \ |
6be8aeef | 64 | static ssize_t field##_show(struct device *dev, \ |
43cb76d9 | 65 | struct device_attribute *attr, char *buf) \ |
1da177e4 | 66 | { \ |
43cb76d9 | 67 | return netdev_show(dev, attr, buf, format_##field); \ |
6be8aeef GKH |
68 | } \ |
69 | ||
70 | #define NETDEVICE_SHOW_RO(field, format_string) \ | |
71 | NETDEVICE_SHOW(field, format_string); \ | |
72 | static DEVICE_ATTR_RO(field) | |
1da177e4 | 73 | |
6be8aeef GKH |
74 | #define NETDEVICE_SHOW_RW(field, format_string) \ |
75 | NETDEVICE_SHOW(field, format_string); \ | |
76 | static DEVICE_ATTR_RW(field) | |
1da177e4 LT |
77 | |
78 | /* use same locking and permission rules as SIF* ioctl's */ | |
43cb76d9 | 79 | static ssize_t netdev_store(struct device *dev, struct device_attribute *attr, |
1da177e4 LT |
80 | const char *buf, size_t len, |
81 | int (*set)(struct net_device *, unsigned long)) | |
82 | { | |
5e1fccc0 EB |
83 | struct net_device *netdev = to_net_dev(dev); |
84 | struct net *net = dev_net(netdev); | |
1da177e4 LT |
85 | unsigned long new; |
86 | int ret = -EINVAL; | |
87 | ||
5e1fccc0 | 88 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
1da177e4 LT |
89 | return -EPERM; |
90 | ||
e1e420c7 SK |
91 | ret = kstrtoul(buf, 0, &new); |
92 | if (ret) | |
1da177e4 LT |
93 | goto err; |
94 | ||
5a5990d3 | 95 | if (!rtnl_trylock()) |
336ca57c | 96 | return restart_syscall(); |
5a5990d3 | 97 | |
5e1fccc0 EB |
98 | if (dev_isalive(netdev)) { |
99 | if ((ret = (*set)(netdev, new)) == 0) | |
1da177e4 LT |
100 | ret = len; |
101 | } | |
102 | rtnl_unlock(); | |
103 | err: | |
104 | return ret; | |
105 | } | |
106 | ||
6be8aeef | 107 | NETDEVICE_SHOW_RO(dev_id, fmt_hex); |
3f85944f | 108 | NETDEVICE_SHOW_RO(dev_port, fmt_dec); |
6be8aeef GKH |
109 | NETDEVICE_SHOW_RO(addr_assign_type, fmt_dec); |
110 | NETDEVICE_SHOW_RO(addr_len, fmt_dec); | |
6be8aeef GKH |
111 | NETDEVICE_SHOW_RO(ifindex, fmt_dec); |
112 | NETDEVICE_SHOW_RO(type, fmt_dec); | |
113 | NETDEVICE_SHOW_RO(link_mode, fmt_dec); | |
1da177e4 | 114 | |
a54acb3a ND |
115 | static ssize_t iflink_show(struct device *dev, struct device_attribute *attr, |
116 | char *buf) | |
117 | { | |
118 | struct net_device *ndev = to_net_dev(dev); | |
119 | ||
120 | return sprintf(buf, fmt_dec, dev_get_iflink(ndev)); | |
121 | } | |
122 | static DEVICE_ATTR_RO(iflink); | |
123 | ||
6b53dafe | 124 | static ssize_t format_name_assign_type(const struct net_device *dev, char *buf) |
685343fc | 125 | { |
6b53dafe | 126 | return sprintf(buf, fmt_dec, dev->name_assign_type); |
685343fc TG |
127 | } |
128 | ||
129 | static ssize_t name_assign_type_show(struct device *dev, | |
130 | struct device_attribute *attr, | |
131 | char *buf) | |
132 | { | |
6b53dafe | 133 | struct net_device *ndev = to_net_dev(dev); |
685343fc TG |
134 | ssize_t ret = -EINVAL; |
135 | ||
6b53dafe | 136 | if (ndev->name_assign_type != NET_NAME_UNKNOWN) |
685343fc TG |
137 | ret = netdev_show(dev, attr, buf, format_name_assign_type); |
138 | ||
139 | return ret; | |
140 | } | |
141 | static DEVICE_ATTR_RO(name_assign_type); | |
142 | ||
1da177e4 | 143 | /* use same locking rules as GIFHWADDR ioctl's */ |
6be8aeef | 144 | static ssize_t address_show(struct device *dev, struct device_attribute *attr, |
43cb76d9 | 145 | char *buf) |
1da177e4 | 146 | { |
6b53dafe | 147 | struct net_device *ndev = to_net_dev(dev); |
1da177e4 LT |
148 | ssize_t ret = -EINVAL; |
149 | ||
150 | read_lock(&dev_base_lock); | |
6b53dafe WC |
151 | if (dev_isalive(ndev)) |
152 | ret = sysfs_format_mac(buf, ndev->dev_addr, ndev->addr_len); | |
1da177e4 LT |
153 | read_unlock(&dev_base_lock); |
154 | return ret; | |
155 | } | |
6be8aeef | 156 | static DEVICE_ATTR_RO(address); |
1da177e4 | 157 | |
6be8aeef GKH |
158 | static ssize_t broadcast_show(struct device *dev, |
159 | struct device_attribute *attr, char *buf) | |
1da177e4 | 160 | { |
6b53dafe WC |
161 | struct net_device *ndev = to_net_dev(dev); |
162 | if (dev_isalive(ndev)) | |
163 | return sysfs_format_mac(buf, ndev->broadcast, ndev->addr_len); | |
1da177e4 LT |
164 | return -EINVAL; |
165 | } | |
6be8aeef | 166 | static DEVICE_ATTR_RO(broadcast); |
1da177e4 | 167 | |
6b53dafe | 168 | static int change_carrier(struct net_device *dev, unsigned long new_carrier) |
fdae0fde | 169 | { |
6b53dafe | 170 | if (!netif_running(dev)) |
fdae0fde | 171 | return -EINVAL; |
6b53dafe | 172 | return dev_change_carrier(dev, (bool) new_carrier); |
fdae0fde JP |
173 | } |
174 | ||
6be8aeef GKH |
175 | static ssize_t carrier_store(struct device *dev, struct device_attribute *attr, |
176 | const char *buf, size_t len) | |
fdae0fde JP |
177 | { |
178 | return netdev_store(dev, attr, buf, len, change_carrier); | |
179 | } | |
180 | ||
6be8aeef | 181 | static ssize_t carrier_show(struct device *dev, |
43cb76d9 | 182 | struct device_attribute *attr, char *buf) |
1da177e4 LT |
183 | { |
184 | struct net_device *netdev = to_net_dev(dev); | |
185 | if (netif_running(netdev)) { | |
186 | return sprintf(buf, fmt_dec, !!netif_carrier_ok(netdev)); | |
187 | } | |
188 | return -EINVAL; | |
189 | } | |
6be8aeef | 190 | static DEVICE_ATTR_RW(carrier); |
1da177e4 | 191 | |
6be8aeef | 192 | static ssize_t speed_show(struct device *dev, |
d519e17e AG |
193 | struct device_attribute *attr, char *buf) |
194 | { | |
195 | struct net_device *netdev = to_net_dev(dev); | |
196 | int ret = -EINVAL; | |
197 | ||
198 | if (!rtnl_trylock()) | |
199 | return restart_syscall(); | |
200 | ||
8ae6daca DD |
201 | if (netif_running(netdev)) { |
202 | struct ethtool_cmd cmd; | |
4bc71cb9 | 203 | if (!__ethtool_get_settings(netdev, &cmd)) |
75c261b5 | 204 | ret = sprintf(buf, fmt_dec, ethtool_cmd_speed(&cmd)); |
d519e17e AG |
205 | } |
206 | rtnl_unlock(); | |
207 | return ret; | |
208 | } | |
6be8aeef | 209 | static DEVICE_ATTR_RO(speed); |
d519e17e | 210 | |
6be8aeef | 211 | static ssize_t duplex_show(struct device *dev, |
d519e17e AG |
212 | struct device_attribute *attr, char *buf) |
213 | { | |
214 | struct net_device *netdev = to_net_dev(dev); | |
215 | int ret = -EINVAL; | |
216 | ||
217 | if (!rtnl_trylock()) | |
218 | return restart_syscall(); | |
219 | ||
8ae6daca DD |
220 | if (netif_running(netdev)) { |
221 | struct ethtool_cmd cmd; | |
c6c13965 NA |
222 | if (!__ethtool_get_settings(netdev, &cmd)) { |
223 | const char *duplex; | |
224 | switch (cmd.duplex) { | |
225 | case DUPLEX_HALF: | |
226 | duplex = "half"; | |
227 | break; | |
228 | case DUPLEX_FULL: | |
229 | duplex = "full"; | |
230 | break; | |
231 | default: | |
232 | duplex = "unknown"; | |
233 | break; | |
234 | } | |
235 | ret = sprintf(buf, "%s\n", duplex); | |
236 | } | |
d519e17e AG |
237 | } |
238 | rtnl_unlock(); | |
239 | return ret; | |
240 | } | |
6be8aeef | 241 | static DEVICE_ATTR_RO(duplex); |
d519e17e | 242 | |
6be8aeef | 243 | static ssize_t dormant_show(struct device *dev, |
43cb76d9 | 244 | struct device_attribute *attr, char *buf) |
b00055aa SR |
245 | { |
246 | struct net_device *netdev = to_net_dev(dev); | |
247 | ||
248 | if (netif_running(netdev)) | |
249 | return sprintf(buf, fmt_dec, !!netif_dormant(netdev)); | |
250 | ||
251 | return -EINVAL; | |
252 | } | |
6be8aeef | 253 | static DEVICE_ATTR_RO(dormant); |
b00055aa | 254 | |
36cbd3dc | 255 | static const char *const operstates[] = { |
b00055aa SR |
256 | "unknown", |
257 | "notpresent", /* currently unused */ | |
258 | "down", | |
259 | "lowerlayerdown", | |
260 | "testing", /* currently unused */ | |
261 | "dormant", | |
262 | "up" | |
263 | }; | |
264 | ||
6be8aeef | 265 | static ssize_t operstate_show(struct device *dev, |
43cb76d9 | 266 | struct device_attribute *attr, char *buf) |
b00055aa SR |
267 | { |
268 | const struct net_device *netdev = to_net_dev(dev); | |
269 | unsigned char operstate; | |
270 | ||
271 | read_lock(&dev_base_lock); | |
272 | operstate = netdev->operstate; | |
273 | if (!netif_running(netdev)) | |
274 | operstate = IF_OPER_DOWN; | |
275 | read_unlock(&dev_base_lock); | |
276 | ||
e3a5cd9e | 277 | if (operstate >= ARRAY_SIZE(operstates)) |
b00055aa SR |
278 | return -EINVAL; /* should not happen */ |
279 | ||
280 | return sprintf(buf, "%s\n", operstates[operstate]); | |
281 | } | |
6be8aeef | 282 | static DEVICE_ATTR_RO(operstate); |
b00055aa | 283 | |
2d3b479d | 284 | static ssize_t carrier_changes_show(struct device *dev, |
285 | struct device_attribute *attr, | |
286 | char *buf) | |
287 | { | |
288 | struct net_device *netdev = to_net_dev(dev); | |
289 | return sprintf(buf, fmt_dec, | |
290 | atomic_read(&netdev->carrier_changes)); | |
291 | } | |
292 | static DEVICE_ATTR_RO(carrier_changes); | |
293 | ||
1da177e4 | 294 | /* read-write attributes */ |
1da177e4 | 295 | |
6b53dafe | 296 | static int change_mtu(struct net_device *dev, unsigned long new_mtu) |
1da177e4 | 297 | { |
6b53dafe | 298 | return dev_set_mtu(dev, (int) new_mtu); |
1da177e4 LT |
299 | } |
300 | ||
6be8aeef | 301 | static ssize_t mtu_store(struct device *dev, struct device_attribute *attr, |
43cb76d9 | 302 | const char *buf, size_t len) |
1da177e4 | 303 | { |
43cb76d9 | 304 | return netdev_store(dev, attr, buf, len, change_mtu); |
1da177e4 | 305 | } |
6be8aeef | 306 | NETDEVICE_SHOW_RW(mtu, fmt_dec); |
1da177e4 | 307 | |
6b53dafe | 308 | static int change_flags(struct net_device *dev, unsigned long new_flags) |
1da177e4 | 309 | { |
6b53dafe | 310 | return dev_change_flags(dev, (unsigned int) new_flags); |
1da177e4 LT |
311 | } |
312 | ||
6be8aeef | 313 | static ssize_t flags_store(struct device *dev, struct device_attribute *attr, |
43cb76d9 | 314 | const char *buf, size_t len) |
1da177e4 | 315 | { |
43cb76d9 | 316 | return netdev_store(dev, attr, buf, len, change_flags); |
1da177e4 | 317 | } |
6be8aeef | 318 | NETDEVICE_SHOW_RW(flags, fmt_hex); |
1da177e4 | 319 | |
6b53dafe | 320 | static int change_tx_queue_len(struct net_device *dev, unsigned long new_len) |
1da177e4 | 321 | { |
6b53dafe | 322 | dev->tx_queue_len = new_len; |
1da177e4 LT |
323 | return 0; |
324 | } | |
325 | ||
6be8aeef | 326 | static ssize_t tx_queue_len_store(struct device *dev, |
43cb76d9 GKH |
327 | struct device_attribute *attr, |
328 | const char *buf, size_t len) | |
1da177e4 | 329 | { |
5e1fccc0 EB |
330 | if (!capable(CAP_NET_ADMIN)) |
331 | return -EPERM; | |
332 | ||
43cb76d9 | 333 | return netdev_store(dev, attr, buf, len, change_tx_queue_len); |
1da177e4 | 334 | } |
6be8aeef | 335 | NETDEVICE_SHOW_RW(tx_queue_len, fmt_ulong); |
1da177e4 | 336 | |
3b47d303 ED |
337 | static int change_gro_flush_timeout(struct net_device *dev, unsigned long val) |
338 | { | |
339 | dev->gro_flush_timeout = val; | |
340 | return 0; | |
341 | } | |
342 | ||
343 | static ssize_t gro_flush_timeout_store(struct device *dev, | |
344 | struct device_attribute *attr, | |
345 | const char *buf, size_t len) | |
346 | { | |
347 | if (!capable(CAP_NET_ADMIN)) | |
348 | return -EPERM; | |
349 | ||
350 | return netdev_store(dev, attr, buf, len, change_gro_flush_timeout); | |
351 | } | |
352 | NETDEVICE_SHOW_RW(gro_flush_timeout, fmt_ulong); | |
353 | ||
6be8aeef | 354 | static ssize_t ifalias_store(struct device *dev, struct device_attribute *attr, |
0b815a1a SH |
355 | const char *buf, size_t len) |
356 | { | |
357 | struct net_device *netdev = to_net_dev(dev); | |
5e1fccc0 | 358 | struct net *net = dev_net(netdev); |
0b815a1a SH |
359 | size_t count = len; |
360 | ssize_t ret; | |
361 | ||
5e1fccc0 | 362 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
0b815a1a SH |
363 | return -EPERM; |
364 | ||
365 | /* ignore trailing newline */ | |
366 | if (len > 0 && buf[len - 1] == '\n') | |
367 | --count; | |
368 | ||
336ca57c EB |
369 | if (!rtnl_trylock()) |
370 | return restart_syscall(); | |
0b815a1a SH |
371 | ret = dev_set_alias(netdev, buf, count); |
372 | rtnl_unlock(); | |
373 | ||
374 | return ret < 0 ? ret : len; | |
375 | } | |
376 | ||
6be8aeef | 377 | static ssize_t ifalias_show(struct device *dev, |
0b815a1a SH |
378 | struct device_attribute *attr, char *buf) |
379 | { | |
380 | const struct net_device *netdev = to_net_dev(dev); | |
381 | ssize_t ret = 0; | |
382 | ||
336ca57c EB |
383 | if (!rtnl_trylock()) |
384 | return restart_syscall(); | |
0b815a1a SH |
385 | if (netdev->ifalias) |
386 | ret = sprintf(buf, "%s\n", netdev->ifalias); | |
387 | rtnl_unlock(); | |
388 | return ret; | |
389 | } | |
6be8aeef | 390 | static DEVICE_ATTR_RW(ifalias); |
a512b92b | 391 | |
6b53dafe | 392 | static int change_group(struct net_device *dev, unsigned long new_group) |
a512b92b | 393 | { |
6b53dafe | 394 | dev_set_group(dev, (int) new_group); |
a512b92b VD |
395 | return 0; |
396 | } | |
397 | ||
6be8aeef GKH |
398 | static ssize_t group_store(struct device *dev, struct device_attribute *attr, |
399 | const char *buf, size_t len) | |
a512b92b VD |
400 | { |
401 | return netdev_store(dev, attr, buf, len, change_group); | |
402 | } | |
6be8aeef GKH |
403 | NETDEVICE_SHOW(group, fmt_dec); |
404 | static DEVICE_ATTR(netdev_group, S_IRUGO | S_IWUSR, group_show, group_store); | |
405 | ||
d746d707 AK |
406 | static int change_proto_down(struct net_device *dev, unsigned long proto_down) |
407 | { | |
408 | return dev_change_proto_down(dev, (bool) proto_down); | |
409 | } | |
410 | ||
411 | static ssize_t proto_down_store(struct device *dev, | |
412 | struct device_attribute *attr, | |
413 | const char *buf, size_t len) | |
414 | { | |
415 | return netdev_store(dev, attr, buf, len, change_proto_down); | |
416 | } | |
417 | NETDEVICE_SHOW_RW(proto_down, fmt_dec); | |
418 | ||
cc998ff8 | 419 | static ssize_t phys_port_id_show(struct device *dev, |
ff80e519 JP |
420 | struct device_attribute *attr, char *buf) |
421 | { | |
422 | struct net_device *netdev = to_net_dev(dev); | |
423 | ssize_t ret = -EINVAL; | |
424 | ||
425 | if (!rtnl_trylock()) | |
426 | return restart_syscall(); | |
427 | ||
428 | if (dev_isalive(netdev)) { | |
02637fce | 429 | struct netdev_phys_item_id ppid; |
ff80e519 JP |
430 | |
431 | ret = dev_get_phys_port_id(netdev, &ppid); | |
432 | if (!ret) | |
433 | ret = sprintf(buf, "%*phN\n", ppid.id_len, ppid.id); | |
434 | } | |
435 | rtnl_unlock(); | |
436 | ||
437 | return ret; | |
438 | } | |
cc998ff8 LT |
439 | static DEVICE_ATTR_RO(phys_port_id); |
440 | ||
db24a904 DA |
441 | static ssize_t phys_port_name_show(struct device *dev, |
442 | struct device_attribute *attr, char *buf) | |
443 | { | |
444 | struct net_device *netdev = to_net_dev(dev); | |
445 | ssize_t ret = -EINVAL; | |
446 | ||
447 | if (!rtnl_trylock()) | |
448 | return restart_syscall(); | |
449 | ||
450 | if (dev_isalive(netdev)) { | |
451 | char name[IFNAMSIZ]; | |
452 | ||
453 | ret = dev_get_phys_port_name(netdev, name, sizeof(name)); | |
454 | if (!ret) | |
455 | ret = sprintf(buf, "%s\n", name); | |
456 | } | |
457 | rtnl_unlock(); | |
458 | ||
459 | return ret; | |
460 | } | |
461 | static DEVICE_ATTR_RO(phys_port_name); | |
462 | ||
aecbe01e JP |
463 | static ssize_t phys_switch_id_show(struct device *dev, |
464 | struct device_attribute *attr, char *buf) | |
465 | { | |
466 | struct net_device *netdev = to_net_dev(dev); | |
467 | ssize_t ret = -EINVAL; | |
468 | ||
469 | if (!rtnl_trylock()) | |
470 | return restart_syscall(); | |
471 | ||
472 | if (dev_isalive(netdev)) { | |
f8e20a9f | 473 | struct switchdev_attr attr = { |
6ff64f6f | 474 | .orig_dev = netdev, |
1f868398 | 475 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, |
f8e20a9f SF |
476 | .flags = SWITCHDEV_F_NO_RECURSE, |
477 | }; | |
aecbe01e | 478 | |
f8e20a9f | 479 | ret = switchdev_port_attr_get(netdev, &attr); |
aecbe01e | 480 | if (!ret) |
42275bd8 SF |
481 | ret = sprintf(buf, "%*phN\n", attr.u.ppid.id_len, |
482 | attr.u.ppid.id); | |
aecbe01e JP |
483 | } |
484 | rtnl_unlock(); | |
485 | ||
486 | return ret; | |
487 | } | |
488 | static DEVICE_ATTR_RO(phys_switch_id); | |
489 | ||
6be8aeef GKH |
490 | static struct attribute *net_class_attrs[] = { |
491 | &dev_attr_netdev_group.attr, | |
492 | &dev_attr_type.attr, | |
493 | &dev_attr_dev_id.attr, | |
3f85944f | 494 | &dev_attr_dev_port.attr, |
6be8aeef GKH |
495 | &dev_attr_iflink.attr, |
496 | &dev_attr_ifindex.attr, | |
685343fc | 497 | &dev_attr_name_assign_type.attr, |
6be8aeef GKH |
498 | &dev_attr_addr_assign_type.attr, |
499 | &dev_attr_addr_len.attr, | |
500 | &dev_attr_link_mode.attr, | |
501 | &dev_attr_address.attr, | |
502 | &dev_attr_broadcast.attr, | |
503 | &dev_attr_speed.attr, | |
504 | &dev_attr_duplex.attr, | |
505 | &dev_attr_dormant.attr, | |
506 | &dev_attr_operstate.attr, | |
2d3b479d | 507 | &dev_attr_carrier_changes.attr, |
6be8aeef GKH |
508 | &dev_attr_ifalias.attr, |
509 | &dev_attr_carrier.attr, | |
510 | &dev_attr_mtu.attr, | |
511 | &dev_attr_flags.attr, | |
512 | &dev_attr_tx_queue_len.attr, | |
3b47d303 | 513 | &dev_attr_gro_flush_timeout.attr, |
cc998ff8 | 514 | &dev_attr_phys_port_id.attr, |
db24a904 | 515 | &dev_attr_phys_port_name.attr, |
aecbe01e | 516 | &dev_attr_phys_switch_id.attr, |
d746d707 | 517 | &dev_attr_proto_down.attr, |
6be8aeef | 518 | NULL, |
1da177e4 | 519 | }; |
6be8aeef | 520 | ATTRIBUTE_GROUPS(net_class); |
1da177e4 LT |
521 | |
522 | /* Show a given an attribute in the statistics group */ | |
43cb76d9 GKH |
523 | static ssize_t netstat_show(const struct device *d, |
524 | struct device_attribute *attr, char *buf, | |
1da177e4 LT |
525 | unsigned long offset) |
526 | { | |
43cb76d9 | 527 | struct net_device *dev = to_net_dev(d); |
1da177e4 LT |
528 | ssize_t ret = -EINVAL; |
529 | ||
be1f3c2c BH |
530 | WARN_ON(offset > sizeof(struct rtnl_link_stats64) || |
531 | offset % sizeof(u64) != 0); | |
1da177e4 LT |
532 | |
533 | read_lock(&dev_base_lock); | |
96e74088 | 534 | if (dev_isalive(dev)) { |
28172739 ED |
535 | struct rtnl_link_stats64 temp; |
536 | const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp); | |
537 | ||
be1f3c2c | 538 | ret = sprintf(buf, fmt_u64, *(u64 *)(((u8 *) stats) + offset)); |
96e74088 | 539 | } |
1da177e4 LT |
540 | read_unlock(&dev_base_lock); |
541 | return ret; | |
542 | } | |
543 | ||
544 | /* generate a read-only statistics attribute */ | |
545 | #define NETSTAT_ENTRY(name) \ | |
6be8aeef | 546 | static ssize_t name##_show(struct device *d, \ |
43cb76d9 | 547 | struct device_attribute *attr, char *buf) \ |
1da177e4 | 548 | { \ |
43cb76d9 | 549 | return netstat_show(d, attr, buf, \ |
be1f3c2c | 550 | offsetof(struct rtnl_link_stats64, name)); \ |
1da177e4 | 551 | } \ |
6be8aeef | 552 | static DEVICE_ATTR_RO(name) |
1da177e4 LT |
553 | |
554 | NETSTAT_ENTRY(rx_packets); | |
555 | NETSTAT_ENTRY(tx_packets); | |
556 | NETSTAT_ENTRY(rx_bytes); | |
557 | NETSTAT_ENTRY(tx_bytes); | |
558 | NETSTAT_ENTRY(rx_errors); | |
559 | NETSTAT_ENTRY(tx_errors); | |
560 | NETSTAT_ENTRY(rx_dropped); | |
561 | NETSTAT_ENTRY(tx_dropped); | |
562 | NETSTAT_ENTRY(multicast); | |
563 | NETSTAT_ENTRY(collisions); | |
564 | NETSTAT_ENTRY(rx_length_errors); | |
565 | NETSTAT_ENTRY(rx_over_errors); | |
566 | NETSTAT_ENTRY(rx_crc_errors); | |
567 | NETSTAT_ENTRY(rx_frame_errors); | |
568 | NETSTAT_ENTRY(rx_fifo_errors); | |
569 | NETSTAT_ENTRY(rx_missed_errors); | |
570 | NETSTAT_ENTRY(tx_aborted_errors); | |
571 | NETSTAT_ENTRY(tx_carrier_errors); | |
572 | NETSTAT_ENTRY(tx_fifo_errors); | |
573 | NETSTAT_ENTRY(tx_heartbeat_errors); | |
574 | NETSTAT_ENTRY(tx_window_errors); | |
575 | NETSTAT_ENTRY(rx_compressed); | |
576 | NETSTAT_ENTRY(tx_compressed); | |
577 | ||
578 | static struct attribute *netstat_attrs[] = { | |
43cb76d9 GKH |
579 | &dev_attr_rx_packets.attr, |
580 | &dev_attr_tx_packets.attr, | |
581 | &dev_attr_rx_bytes.attr, | |
582 | &dev_attr_tx_bytes.attr, | |
583 | &dev_attr_rx_errors.attr, | |
584 | &dev_attr_tx_errors.attr, | |
585 | &dev_attr_rx_dropped.attr, | |
586 | &dev_attr_tx_dropped.attr, | |
587 | &dev_attr_multicast.attr, | |
588 | &dev_attr_collisions.attr, | |
589 | &dev_attr_rx_length_errors.attr, | |
590 | &dev_attr_rx_over_errors.attr, | |
591 | &dev_attr_rx_crc_errors.attr, | |
592 | &dev_attr_rx_frame_errors.attr, | |
593 | &dev_attr_rx_fifo_errors.attr, | |
594 | &dev_attr_rx_missed_errors.attr, | |
595 | &dev_attr_tx_aborted_errors.attr, | |
596 | &dev_attr_tx_carrier_errors.attr, | |
597 | &dev_attr_tx_fifo_errors.attr, | |
598 | &dev_attr_tx_heartbeat_errors.attr, | |
599 | &dev_attr_tx_window_errors.attr, | |
600 | &dev_attr_rx_compressed.attr, | |
601 | &dev_attr_tx_compressed.attr, | |
1da177e4 LT |
602 | NULL |
603 | }; | |
604 | ||
605 | ||
606 | static struct attribute_group netstat_group = { | |
607 | .name = "statistics", | |
608 | .attrs = netstat_attrs, | |
609 | }; | |
38c1a01c JB |
610 | |
611 | #if IS_ENABLED(CONFIG_WIRELESS_EXT) || IS_ENABLED(CONFIG_CFG80211) | |
612 | static struct attribute *wireless_attrs[] = { | |
613 | NULL | |
614 | }; | |
615 | ||
616 | static struct attribute_group wireless_group = { | |
617 | .name = "wireless", | |
618 | .attrs = wireless_attrs, | |
619 | }; | |
620 | #endif | |
6be8aeef GKH |
621 | |
622 | #else /* CONFIG_SYSFS */ | |
623 | #define net_class_groups NULL | |
d6523ddf | 624 | #endif /* CONFIG_SYSFS */ |
1da177e4 | 625 | |
a953be53 | 626 | #ifdef CONFIG_SYSFS |
0a9627f2 TH |
627 | #define to_rx_queue_attr(_attr) container_of(_attr, \ |
628 | struct rx_queue_attribute, attr) | |
629 | ||
630 | #define to_rx_queue(obj) container_of(obj, struct netdev_rx_queue, kobj) | |
631 | ||
632 | static ssize_t rx_queue_attr_show(struct kobject *kobj, struct attribute *attr, | |
633 | char *buf) | |
634 | { | |
635 | struct rx_queue_attribute *attribute = to_rx_queue_attr(attr); | |
636 | struct netdev_rx_queue *queue = to_rx_queue(kobj); | |
637 | ||
638 | if (!attribute->show) | |
639 | return -EIO; | |
640 | ||
641 | return attribute->show(queue, attribute, buf); | |
642 | } | |
643 | ||
644 | static ssize_t rx_queue_attr_store(struct kobject *kobj, struct attribute *attr, | |
645 | const char *buf, size_t count) | |
646 | { | |
647 | struct rx_queue_attribute *attribute = to_rx_queue_attr(attr); | |
648 | struct netdev_rx_queue *queue = to_rx_queue(kobj); | |
649 | ||
650 | if (!attribute->store) | |
651 | return -EIO; | |
652 | ||
653 | return attribute->store(queue, attribute, buf, count); | |
654 | } | |
655 | ||
fa50d645 | 656 | static const struct sysfs_ops rx_queue_sysfs_ops = { |
0a9627f2 TH |
657 | .show = rx_queue_attr_show, |
658 | .store = rx_queue_attr_store, | |
659 | }; | |
660 | ||
a953be53 | 661 | #ifdef CONFIG_RPS |
0a9627f2 TH |
662 | static ssize_t show_rps_map(struct netdev_rx_queue *queue, |
663 | struct rx_queue_attribute *attribute, char *buf) | |
664 | { | |
665 | struct rps_map *map; | |
666 | cpumask_var_t mask; | |
f0906827 | 667 | int i, len; |
0a9627f2 TH |
668 | |
669 | if (!zalloc_cpumask_var(&mask, GFP_KERNEL)) | |
670 | return -ENOMEM; | |
671 | ||
672 | rcu_read_lock(); | |
673 | map = rcu_dereference(queue->rps_map); | |
674 | if (map) | |
675 | for (i = 0; i < map->len; i++) | |
676 | cpumask_set_cpu(map->cpus[i], mask); | |
677 | ||
f0906827 | 678 | len = snprintf(buf, PAGE_SIZE, "%*pb\n", cpumask_pr_args(mask)); |
0a9627f2 | 679 | rcu_read_unlock(); |
0a9627f2 | 680 | free_cpumask_var(mask); |
f0906827 TH |
681 | |
682 | return len < PAGE_SIZE ? len : -EINVAL; | |
0a9627f2 TH |
683 | } |
684 | ||
f5acb907 | 685 | static ssize_t store_rps_map(struct netdev_rx_queue *queue, |
0a9627f2 TH |
686 | struct rx_queue_attribute *attribute, |
687 | const char *buf, size_t len) | |
688 | { | |
689 | struct rps_map *old_map, *map; | |
690 | cpumask_var_t mask; | |
691 | int err, cpu, i; | |
da65ad1f | 692 | static DEFINE_MUTEX(rps_map_mutex); |
0a9627f2 TH |
693 | |
694 | if (!capable(CAP_NET_ADMIN)) | |
695 | return -EPERM; | |
696 | ||
697 | if (!alloc_cpumask_var(&mask, GFP_KERNEL)) | |
698 | return -ENOMEM; | |
699 | ||
700 | err = bitmap_parse(buf, len, cpumask_bits(mask), nr_cpumask_bits); | |
701 | if (err) { | |
702 | free_cpumask_var(mask); | |
703 | return err; | |
704 | } | |
705 | ||
95c96174 | 706 | map = kzalloc(max_t(unsigned int, |
0a9627f2 TH |
707 | RPS_MAP_SIZE(cpumask_weight(mask)), L1_CACHE_BYTES), |
708 | GFP_KERNEL); | |
709 | if (!map) { | |
710 | free_cpumask_var(mask); | |
711 | return -ENOMEM; | |
712 | } | |
713 | ||
714 | i = 0; | |
715 | for_each_cpu_and(cpu, mask, cpu_online_mask) | |
716 | map->cpus[i++] = cpu; | |
717 | ||
718 | if (i) | |
719 | map->len = i; | |
720 | else { | |
721 | kfree(map); | |
722 | map = NULL; | |
723 | } | |
724 | ||
da65ad1f | 725 | mutex_lock(&rps_map_mutex); |
6e3f7faf | 726 | old_map = rcu_dereference_protected(queue->rps_map, |
da65ad1f | 727 | mutex_is_locked(&rps_map_mutex)); |
0a9627f2 | 728 | rcu_assign_pointer(queue->rps_map, map); |
0a9627f2 | 729 | |
adc9300e | 730 | if (map) |
c5905afb | 731 | static_key_slow_inc(&rps_needed); |
10e4ea75 | 732 | if (old_map) |
c5905afb | 733 | static_key_slow_dec(&rps_needed); |
10e4ea75 | 734 | |
da65ad1f | 735 | mutex_unlock(&rps_map_mutex); |
10e4ea75 TH |
736 | |
737 | if (old_map) | |
738 | kfree_rcu(old_map, rcu); | |
739 | ||
0a9627f2 TH |
740 | free_cpumask_var(mask); |
741 | return len; | |
742 | } | |
743 | ||
fec5e652 TH |
744 | static ssize_t show_rps_dev_flow_table_cnt(struct netdev_rx_queue *queue, |
745 | struct rx_queue_attribute *attr, | |
746 | char *buf) | |
747 | { | |
748 | struct rps_dev_flow_table *flow_table; | |
60b778ce | 749 | unsigned long val = 0; |
fec5e652 TH |
750 | |
751 | rcu_read_lock(); | |
752 | flow_table = rcu_dereference(queue->rps_flow_table); | |
753 | if (flow_table) | |
60b778ce | 754 | val = (unsigned long)flow_table->mask + 1; |
fec5e652 TH |
755 | rcu_read_unlock(); |
756 | ||
60b778ce | 757 | return sprintf(buf, "%lu\n", val); |
fec5e652 TH |
758 | } |
759 | ||
fec5e652 TH |
760 | static void rps_dev_flow_table_release(struct rcu_head *rcu) |
761 | { | |
762 | struct rps_dev_flow_table *table = container_of(rcu, | |
763 | struct rps_dev_flow_table, rcu); | |
243198d0 | 764 | vfree(table); |
fec5e652 TH |
765 | } |
766 | ||
f5acb907 | 767 | static ssize_t store_rps_dev_flow_table_cnt(struct netdev_rx_queue *queue, |
fec5e652 TH |
768 | struct rx_queue_attribute *attr, |
769 | const char *buf, size_t len) | |
770 | { | |
60b778ce | 771 | unsigned long mask, count; |
fec5e652 TH |
772 | struct rps_dev_flow_table *table, *old_table; |
773 | static DEFINE_SPINLOCK(rps_dev_flow_lock); | |
60b778ce | 774 | int rc; |
fec5e652 TH |
775 | |
776 | if (!capable(CAP_NET_ADMIN)) | |
777 | return -EPERM; | |
778 | ||
60b778ce ED |
779 | rc = kstrtoul(buf, 0, &count); |
780 | if (rc < 0) | |
781 | return rc; | |
fec5e652 TH |
782 | |
783 | if (count) { | |
60b778ce ED |
784 | mask = count - 1; |
785 | /* mask = roundup_pow_of_two(count) - 1; | |
786 | * without overflows... | |
787 | */ | |
788 | while ((mask | (mask >> 1)) != mask) | |
789 | mask |= (mask >> 1); | |
790 | /* On 64 bit arches, must check mask fits in table->mask (u32), | |
8e3bff96 | 791 | * and on 32bit arches, must check |
792 | * RPS_DEV_FLOW_TABLE_SIZE(mask + 1) doesn't overflow. | |
60b778ce ED |
793 | */ |
794 | #if BITS_PER_LONG > 32 | |
795 | if (mask > (unsigned long)(u32)mask) | |
a0a129f8 | 796 | return -EINVAL; |
60b778ce ED |
797 | #else |
798 | if (mask > (ULONG_MAX - RPS_DEV_FLOW_TABLE_SIZE(1)) | |
a0a129f8 | 799 | / sizeof(struct rps_dev_flow)) { |
fec5e652 TH |
800 | /* Enforce a limit to prevent overflow */ |
801 | return -EINVAL; | |
802 | } | |
60b778ce ED |
803 | #endif |
804 | table = vmalloc(RPS_DEV_FLOW_TABLE_SIZE(mask + 1)); | |
fec5e652 TH |
805 | if (!table) |
806 | return -ENOMEM; | |
807 | ||
60b778ce ED |
808 | table->mask = mask; |
809 | for (count = 0; count <= mask; count++) | |
810 | table->flows[count].cpu = RPS_NO_CPU; | |
fec5e652 TH |
811 | } else |
812 | table = NULL; | |
813 | ||
814 | spin_lock(&rps_dev_flow_lock); | |
6e3f7faf ED |
815 | old_table = rcu_dereference_protected(queue->rps_flow_table, |
816 | lockdep_is_held(&rps_dev_flow_lock)); | |
fec5e652 TH |
817 | rcu_assign_pointer(queue->rps_flow_table, table); |
818 | spin_unlock(&rps_dev_flow_lock); | |
819 | ||
820 | if (old_table) | |
821 | call_rcu(&old_table->rcu, rps_dev_flow_table_release); | |
822 | ||
823 | return len; | |
824 | } | |
825 | ||
0a9627f2 TH |
826 | static struct rx_queue_attribute rps_cpus_attribute = |
827 | __ATTR(rps_cpus, S_IRUGO | S_IWUSR, show_rps_map, store_rps_map); | |
828 | ||
fec5e652 TH |
829 | |
830 | static struct rx_queue_attribute rps_dev_flow_table_cnt_attribute = | |
831 | __ATTR(rps_flow_cnt, S_IRUGO | S_IWUSR, | |
832 | show_rps_dev_flow_table_cnt, store_rps_dev_flow_table_cnt); | |
a953be53 | 833 | #endif /* CONFIG_RPS */ |
fec5e652 | 834 | |
0a9627f2 | 835 | static struct attribute *rx_queue_default_attrs[] = { |
a953be53 | 836 | #ifdef CONFIG_RPS |
0a9627f2 | 837 | &rps_cpus_attribute.attr, |
fec5e652 | 838 | &rps_dev_flow_table_cnt_attribute.attr, |
a953be53 | 839 | #endif |
0a9627f2 TH |
840 | NULL |
841 | }; | |
842 | ||
843 | static void rx_queue_release(struct kobject *kobj) | |
844 | { | |
845 | struct netdev_rx_queue *queue = to_rx_queue(kobj); | |
a953be53 | 846 | #ifdef CONFIG_RPS |
6e3f7faf ED |
847 | struct rps_map *map; |
848 | struct rps_dev_flow_table *flow_table; | |
0a9627f2 | 849 | |
fec5e652 | 850 | |
33d480ce | 851 | map = rcu_dereference_protected(queue->rps_map, 1); |
9ea19481 JF |
852 | if (map) { |
853 | RCU_INIT_POINTER(queue->rps_map, NULL); | |
f6f80238 | 854 | kfree_rcu(map, rcu); |
9ea19481 | 855 | } |
6e3f7faf | 856 | |
33d480ce | 857 | flow_table = rcu_dereference_protected(queue->rps_flow_table, 1); |
9ea19481 JF |
858 | if (flow_table) { |
859 | RCU_INIT_POINTER(queue->rps_flow_table, NULL); | |
6e3f7faf | 860 | call_rcu(&flow_table->rcu, rps_dev_flow_table_release); |
9ea19481 | 861 | } |
a953be53 | 862 | #endif |
0a9627f2 | 863 | |
9ea19481 | 864 | memset(kobj, 0, sizeof(*kobj)); |
fe822240 | 865 | dev_put(queue->dev); |
0a9627f2 TH |
866 | } |
867 | ||
82ef3d5d WC |
868 | static const void *rx_queue_namespace(struct kobject *kobj) |
869 | { | |
870 | struct netdev_rx_queue *queue = to_rx_queue(kobj); | |
871 | struct device *dev = &queue->dev->dev; | |
872 | const void *ns = NULL; | |
873 | ||
874 | if (dev->class && dev->class->ns_type) | |
875 | ns = dev->class->namespace(dev); | |
876 | ||
877 | return ns; | |
878 | } | |
879 | ||
0a9627f2 TH |
880 | static struct kobj_type rx_queue_ktype = { |
881 | .sysfs_ops = &rx_queue_sysfs_ops, | |
882 | .release = rx_queue_release, | |
883 | .default_attrs = rx_queue_default_attrs, | |
82ef3d5d | 884 | .namespace = rx_queue_namespace |
0a9627f2 TH |
885 | }; |
886 | ||
6b53dafe | 887 | static int rx_queue_add_kobject(struct net_device *dev, int index) |
0a9627f2 | 888 | { |
6b53dafe | 889 | struct netdev_rx_queue *queue = dev->_rx + index; |
0a9627f2 TH |
890 | struct kobject *kobj = &queue->kobj; |
891 | int error = 0; | |
892 | ||
6b53dafe | 893 | kobj->kset = dev->queues_kset; |
0a9627f2 TH |
894 | error = kobject_init_and_add(kobj, &rx_queue_ktype, NULL, |
895 | "rx-%u", index); | |
a953be53 MD |
896 | if (error) |
897 | goto exit; | |
898 | ||
6b53dafe WC |
899 | if (dev->sysfs_rx_queue_group) { |
900 | error = sysfs_create_group(kobj, dev->sysfs_rx_queue_group); | |
a953be53 MD |
901 | if (error) |
902 | goto exit; | |
0a9627f2 TH |
903 | } |
904 | ||
905 | kobject_uevent(kobj, KOBJ_ADD); | |
fe822240 | 906 | dev_hold(queue->dev); |
0a9627f2 | 907 | |
a953be53 MD |
908 | return error; |
909 | exit: | |
910 | kobject_put(kobj); | |
0a9627f2 TH |
911 | return error; |
912 | } | |
80dd6eac | 913 | #endif /* CONFIG_SYSFS */ |
0a9627f2 | 914 | |
62fe0b40 | 915 | int |
6b53dafe | 916 | net_rx_queue_update_kobjects(struct net_device *dev, int old_num, int new_num) |
0a9627f2 | 917 | { |
a953be53 | 918 | #ifdef CONFIG_SYSFS |
0a9627f2 TH |
919 | int i; |
920 | int error = 0; | |
921 | ||
a953be53 | 922 | #ifndef CONFIG_RPS |
6b53dafe | 923 | if (!dev->sysfs_rx_queue_group) |
a953be53 MD |
924 | return 0; |
925 | #endif | |
62fe0b40 | 926 | for (i = old_num; i < new_num; i++) { |
6b53dafe | 927 | error = rx_queue_add_kobject(dev, i); |
62fe0b40 BH |
928 | if (error) { |
929 | new_num = old_num; | |
0a9627f2 | 930 | break; |
62fe0b40 | 931 | } |
0a9627f2 TH |
932 | } |
933 | ||
a953be53 | 934 | while (--i >= new_num) { |
6b53dafe WC |
935 | if (dev->sysfs_rx_queue_group) |
936 | sysfs_remove_group(&dev->_rx[i].kobj, | |
937 | dev->sysfs_rx_queue_group); | |
938 | kobject_put(&dev->_rx[i].kobj); | |
a953be53 | 939 | } |
0a9627f2 TH |
940 | |
941 | return error; | |
bf264145 TH |
942 | #else |
943 | return 0; | |
944 | #endif | |
0a9627f2 TH |
945 | } |
946 | ||
ccf5ff69 | 947 | #ifdef CONFIG_SYSFS |
1d24eb48 TH |
948 | /* |
949 | * netdev_queue sysfs structures and functions. | |
950 | */ | |
951 | struct netdev_queue_attribute { | |
952 | struct attribute attr; | |
953 | ssize_t (*show)(struct netdev_queue *queue, | |
954 | struct netdev_queue_attribute *attr, char *buf); | |
955 | ssize_t (*store)(struct netdev_queue *queue, | |
956 | struct netdev_queue_attribute *attr, const char *buf, size_t len); | |
957 | }; | |
958 | #define to_netdev_queue_attr(_attr) container_of(_attr, \ | |
959 | struct netdev_queue_attribute, attr) | |
960 | ||
961 | #define to_netdev_queue(obj) container_of(obj, struct netdev_queue, kobj) | |
962 | ||
963 | static ssize_t netdev_queue_attr_show(struct kobject *kobj, | |
964 | struct attribute *attr, char *buf) | |
965 | { | |
966 | struct netdev_queue_attribute *attribute = to_netdev_queue_attr(attr); | |
967 | struct netdev_queue *queue = to_netdev_queue(kobj); | |
968 | ||
969 | if (!attribute->show) | |
970 | return -EIO; | |
971 | ||
972 | return attribute->show(queue, attribute, buf); | |
973 | } | |
974 | ||
975 | static ssize_t netdev_queue_attr_store(struct kobject *kobj, | |
976 | struct attribute *attr, | |
977 | const char *buf, size_t count) | |
978 | { | |
979 | struct netdev_queue_attribute *attribute = to_netdev_queue_attr(attr); | |
980 | struct netdev_queue *queue = to_netdev_queue(kobj); | |
981 | ||
982 | if (!attribute->store) | |
983 | return -EIO; | |
984 | ||
985 | return attribute->store(queue, attribute, buf, count); | |
986 | } | |
987 | ||
988 | static const struct sysfs_ops netdev_queue_sysfs_ops = { | |
989 | .show = netdev_queue_attr_show, | |
990 | .store = netdev_queue_attr_store, | |
991 | }; | |
992 | ||
ccf5ff69 | 993 | static ssize_t show_trans_timeout(struct netdev_queue *queue, |
994 | struct netdev_queue_attribute *attribute, | |
995 | char *buf) | |
996 | { | |
997 | unsigned long trans_timeout; | |
998 | ||
999 | spin_lock_irq(&queue->_xmit_lock); | |
1000 | trans_timeout = queue->trans_timeout; | |
1001 | spin_unlock_irq(&queue->_xmit_lock); | |
1002 | ||
1003 | return sprintf(buf, "%lu", trans_timeout); | |
1004 | } | |
1005 | ||
822b3b2e | 1006 | #ifdef CONFIG_XPS |
c4047f53 | 1007 | static unsigned int get_netdev_queue_index(struct netdev_queue *queue) |
822b3b2e JF |
1008 | { |
1009 | struct net_device *dev = queue->dev; | |
c4047f53 | 1010 | unsigned int i; |
822b3b2e | 1011 | |
c4047f53 | 1012 | i = queue - dev->_tx; |
822b3b2e JF |
1013 | BUG_ON(i >= dev->num_tx_queues); |
1014 | ||
1015 | return i; | |
1016 | } | |
1017 | ||
1018 | static ssize_t show_tx_maxrate(struct netdev_queue *queue, | |
1019 | struct netdev_queue_attribute *attribute, | |
1020 | char *buf) | |
1021 | { | |
1022 | return sprintf(buf, "%lu\n", queue->tx_maxrate); | |
1023 | } | |
1024 | ||
1025 | static ssize_t set_tx_maxrate(struct netdev_queue *queue, | |
1026 | struct netdev_queue_attribute *attribute, | |
1027 | const char *buf, size_t len) | |
1028 | { | |
1029 | struct net_device *dev = queue->dev; | |
1030 | int err, index = get_netdev_queue_index(queue); | |
1031 | u32 rate = 0; | |
1032 | ||
1033 | err = kstrtou32(buf, 10, &rate); | |
1034 | if (err < 0) | |
1035 | return err; | |
1036 | ||
1037 | if (!rtnl_trylock()) | |
1038 | return restart_syscall(); | |
1039 | ||
1040 | err = -EOPNOTSUPP; | |
1041 | if (dev->netdev_ops->ndo_set_tx_maxrate) | |
1042 | err = dev->netdev_ops->ndo_set_tx_maxrate(dev, index, rate); | |
1043 | ||
1044 | rtnl_unlock(); | |
1045 | if (!err) { | |
1046 | queue->tx_maxrate = rate; | |
1047 | return len; | |
1048 | } | |
1049 | return err; | |
1050 | } | |
1051 | ||
1052 | static struct netdev_queue_attribute queue_tx_maxrate = | |
1053 | __ATTR(tx_maxrate, S_IRUGO | S_IWUSR, | |
1054 | show_tx_maxrate, set_tx_maxrate); | |
1055 | #endif | |
1056 | ||
ccf5ff69 | 1057 | static struct netdev_queue_attribute queue_trans_timeout = |
1058 | __ATTR(tx_timeout, S_IRUGO, show_trans_timeout, NULL); | |
1059 | ||
114cf580 TH |
1060 | #ifdef CONFIG_BQL |
1061 | /* | |
1062 | * Byte queue limits sysfs structures and functions. | |
1063 | */ | |
1064 | static ssize_t bql_show(char *buf, unsigned int value) | |
1065 | { | |
1066 | return sprintf(buf, "%u\n", value); | |
1067 | } | |
1068 | ||
1069 | static ssize_t bql_set(const char *buf, const size_t count, | |
1070 | unsigned int *pvalue) | |
1071 | { | |
1072 | unsigned int value; | |
1073 | int err; | |
1074 | ||
1075 | if (!strcmp(buf, "max") || !strcmp(buf, "max\n")) | |
1076 | value = DQL_MAX_LIMIT; | |
1077 | else { | |
1078 | err = kstrtouint(buf, 10, &value); | |
1079 | if (err < 0) | |
1080 | return err; | |
1081 | if (value > DQL_MAX_LIMIT) | |
1082 | return -EINVAL; | |
1083 | } | |
1084 | ||
1085 | *pvalue = value; | |
1086 | ||
1087 | return count; | |
1088 | } | |
1089 | ||
1090 | static ssize_t bql_show_hold_time(struct netdev_queue *queue, | |
1091 | struct netdev_queue_attribute *attr, | |
1092 | char *buf) | |
1093 | { | |
1094 | struct dql *dql = &queue->dql; | |
1095 | ||
1096 | return sprintf(buf, "%u\n", jiffies_to_msecs(dql->slack_hold_time)); | |
1097 | } | |
1098 | ||
1099 | static ssize_t bql_set_hold_time(struct netdev_queue *queue, | |
1100 | struct netdev_queue_attribute *attribute, | |
1101 | const char *buf, size_t len) | |
1102 | { | |
1103 | struct dql *dql = &queue->dql; | |
95c96174 | 1104 | unsigned int value; |
114cf580 TH |
1105 | int err; |
1106 | ||
1107 | err = kstrtouint(buf, 10, &value); | |
1108 | if (err < 0) | |
1109 | return err; | |
1110 | ||
1111 | dql->slack_hold_time = msecs_to_jiffies(value); | |
1112 | ||
1113 | return len; | |
1114 | } | |
1115 | ||
1116 | static struct netdev_queue_attribute bql_hold_time_attribute = | |
1117 | __ATTR(hold_time, S_IRUGO | S_IWUSR, bql_show_hold_time, | |
1118 | bql_set_hold_time); | |
1119 | ||
1120 | static ssize_t bql_show_inflight(struct netdev_queue *queue, | |
1121 | struct netdev_queue_attribute *attr, | |
1122 | char *buf) | |
1123 | { | |
1124 | struct dql *dql = &queue->dql; | |
1125 | ||
1126 | return sprintf(buf, "%u\n", dql->num_queued - dql->num_completed); | |
1127 | } | |
1128 | ||
1129 | static struct netdev_queue_attribute bql_inflight_attribute = | |
795d9a25 | 1130 | __ATTR(inflight, S_IRUGO, bql_show_inflight, NULL); |
114cf580 TH |
1131 | |
1132 | #define BQL_ATTR(NAME, FIELD) \ | |
1133 | static ssize_t bql_show_ ## NAME(struct netdev_queue *queue, \ | |
1134 | struct netdev_queue_attribute *attr, \ | |
1135 | char *buf) \ | |
1136 | { \ | |
1137 | return bql_show(buf, queue->dql.FIELD); \ | |
1138 | } \ | |
1139 | \ | |
1140 | static ssize_t bql_set_ ## NAME(struct netdev_queue *queue, \ | |
1141 | struct netdev_queue_attribute *attr, \ | |
1142 | const char *buf, size_t len) \ | |
1143 | { \ | |
1144 | return bql_set(buf, len, &queue->dql.FIELD); \ | |
1145 | } \ | |
1146 | \ | |
1147 | static struct netdev_queue_attribute bql_ ## NAME ## _attribute = \ | |
1148 | __ATTR(NAME, S_IRUGO | S_IWUSR, bql_show_ ## NAME, \ | |
1149 | bql_set_ ## NAME); | |
1150 | ||
1151 | BQL_ATTR(limit, limit) | |
1152 | BQL_ATTR(limit_max, max_limit) | |
1153 | BQL_ATTR(limit_min, min_limit) | |
1154 | ||
1155 | static struct attribute *dql_attrs[] = { | |
1156 | &bql_limit_attribute.attr, | |
1157 | &bql_limit_max_attribute.attr, | |
1158 | &bql_limit_min_attribute.attr, | |
1159 | &bql_hold_time_attribute.attr, | |
1160 | &bql_inflight_attribute.attr, | |
1161 | NULL | |
1162 | }; | |
1163 | ||
1164 | static struct attribute_group dql_group = { | |
1165 | .name = "byte_queue_limits", | |
1166 | .attrs = dql_attrs, | |
1167 | }; | |
1168 | #endif /* CONFIG_BQL */ | |
1169 | ||
ccf5ff69 | 1170 | #ifdef CONFIG_XPS |
1d24eb48 TH |
1171 | static ssize_t show_xps_map(struct netdev_queue *queue, |
1172 | struct netdev_queue_attribute *attribute, char *buf) | |
1173 | { | |
1174 | struct net_device *dev = queue->dev; | |
1175 | struct xps_dev_maps *dev_maps; | |
1176 | cpumask_var_t mask; | |
1177 | unsigned long index; | |
f0906827 | 1178 | int i, len; |
1d24eb48 TH |
1179 | |
1180 | if (!zalloc_cpumask_var(&mask, GFP_KERNEL)) | |
1181 | return -ENOMEM; | |
1182 | ||
1183 | index = get_netdev_queue_index(queue); | |
1184 | ||
1185 | rcu_read_lock(); | |
1186 | dev_maps = rcu_dereference(dev->xps_maps); | |
1187 | if (dev_maps) { | |
1188 | for_each_possible_cpu(i) { | |
1189 | struct xps_map *map = | |
1190 | rcu_dereference(dev_maps->cpu_map[i]); | |
1191 | if (map) { | |
1192 | int j; | |
1193 | for (j = 0; j < map->len; j++) { | |
1194 | if (map->queues[j] == index) { | |
1195 | cpumask_set_cpu(i, mask); | |
1196 | break; | |
1197 | } | |
1198 | } | |
1199 | } | |
1200 | } | |
1201 | } | |
1202 | rcu_read_unlock(); | |
1203 | ||
f0906827 | 1204 | len = snprintf(buf, PAGE_SIZE, "%*pb\n", cpumask_pr_args(mask)); |
1d24eb48 | 1205 | free_cpumask_var(mask); |
f0906827 | 1206 | return len < PAGE_SIZE ? len : -EINVAL; |
1d24eb48 TH |
1207 | } |
1208 | ||
1d24eb48 TH |
1209 | static ssize_t store_xps_map(struct netdev_queue *queue, |
1210 | struct netdev_queue_attribute *attribute, | |
1211 | const char *buf, size_t len) | |
1212 | { | |
1213 | struct net_device *dev = queue->dev; | |
1d24eb48 | 1214 | unsigned long index; |
537c00de AD |
1215 | cpumask_var_t mask; |
1216 | int err; | |
1d24eb48 TH |
1217 | |
1218 | if (!capable(CAP_NET_ADMIN)) | |
1219 | return -EPERM; | |
1220 | ||
1221 | if (!alloc_cpumask_var(&mask, GFP_KERNEL)) | |
1222 | return -ENOMEM; | |
1223 | ||
1224 | index = get_netdev_queue_index(queue); | |
1225 | ||
1226 | err = bitmap_parse(buf, len, cpumask_bits(mask), nr_cpumask_bits); | |
1227 | if (err) { | |
1228 | free_cpumask_var(mask); | |
1229 | return err; | |
1230 | } | |
1231 | ||
537c00de | 1232 | err = netif_set_xps_queue(dev, mask, index); |
1d24eb48 TH |
1233 | |
1234 | free_cpumask_var(mask); | |
1d24eb48 | 1235 | |
537c00de | 1236 | return err ? : len; |
1d24eb48 TH |
1237 | } |
1238 | ||
1239 | static struct netdev_queue_attribute xps_cpus_attribute = | |
1240 | __ATTR(xps_cpus, S_IRUGO | S_IWUSR, show_xps_map, store_xps_map); | |
ccf5ff69 | 1241 | #endif /* CONFIG_XPS */ |
1d24eb48 TH |
1242 | |
1243 | static struct attribute *netdev_queue_default_attrs[] = { | |
ccf5ff69 | 1244 | &queue_trans_timeout.attr, |
1245 | #ifdef CONFIG_XPS | |
1d24eb48 | 1246 | &xps_cpus_attribute.attr, |
822b3b2e | 1247 | &queue_tx_maxrate.attr, |
ccf5ff69 | 1248 | #endif |
1d24eb48 TH |
1249 | NULL |
1250 | }; | |
1251 | ||
1252 | static void netdev_queue_release(struct kobject *kobj) | |
1253 | { | |
1254 | struct netdev_queue *queue = to_netdev_queue(kobj); | |
1d24eb48 | 1255 | |
1d24eb48 TH |
1256 | memset(kobj, 0, sizeof(*kobj)); |
1257 | dev_put(queue->dev); | |
1258 | } | |
1259 | ||
82ef3d5d WC |
1260 | static const void *netdev_queue_namespace(struct kobject *kobj) |
1261 | { | |
1262 | struct netdev_queue *queue = to_netdev_queue(kobj); | |
1263 | struct device *dev = &queue->dev->dev; | |
1264 | const void *ns = NULL; | |
1265 | ||
1266 | if (dev->class && dev->class->ns_type) | |
1267 | ns = dev->class->namespace(dev); | |
1268 | ||
1269 | return ns; | |
1270 | } | |
1271 | ||
1d24eb48 TH |
1272 | static struct kobj_type netdev_queue_ktype = { |
1273 | .sysfs_ops = &netdev_queue_sysfs_ops, | |
1274 | .release = netdev_queue_release, | |
1275 | .default_attrs = netdev_queue_default_attrs, | |
82ef3d5d | 1276 | .namespace = netdev_queue_namespace, |
1d24eb48 TH |
1277 | }; |
1278 | ||
6b53dafe | 1279 | static int netdev_queue_add_kobject(struct net_device *dev, int index) |
1d24eb48 | 1280 | { |
6b53dafe | 1281 | struct netdev_queue *queue = dev->_tx + index; |
1d24eb48 TH |
1282 | struct kobject *kobj = &queue->kobj; |
1283 | int error = 0; | |
1284 | ||
6b53dafe | 1285 | kobj->kset = dev->queues_kset; |
1d24eb48 TH |
1286 | error = kobject_init_and_add(kobj, &netdev_queue_ktype, NULL, |
1287 | "tx-%u", index); | |
114cf580 TH |
1288 | if (error) |
1289 | goto exit; | |
1290 | ||
1291 | #ifdef CONFIG_BQL | |
1292 | error = sysfs_create_group(kobj, &dql_group); | |
1293 | if (error) | |
1294 | goto exit; | |
1295 | #endif | |
1d24eb48 TH |
1296 | |
1297 | kobject_uevent(kobj, KOBJ_ADD); | |
1298 | dev_hold(queue->dev); | |
1299 | ||
114cf580 TH |
1300 | return 0; |
1301 | exit: | |
1302 | kobject_put(kobj); | |
1d24eb48 TH |
1303 | return error; |
1304 | } | |
ccf5ff69 | 1305 | #endif /* CONFIG_SYSFS */ |
1d24eb48 TH |
1306 | |
1307 | int | |
6b53dafe | 1308 | netdev_queue_update_kobjects(struct net_device *dev, int old_num, int new_num) |
1d24eb48 | 1309 | { |
ccf5ff69 | 1310 | #ifdef CONFIG_SYSFS |
1d24eb48 TH |
1311 | int i; |
1312 | int error = 0; | |
1313 | ||
1314 | for (i = old_num; i < new_num; i++) { | |
6b53dafe | 1315 | error = netdev_queue_add_kobject(dev, i); |
1d24eb48 TH |
1316 | if (error) { |
1317 | new_num = old_num; | |
1318 | break; | |
1319 | } | |
1320 | } | |
1321 | ||
114cf580 | 1322 | while (--i >= new_num) { |
6b53dafe | 1323 | struct netdev_queue *queue = dev->_tx + i; |
114cf580 TH |
1324 | |
1325 | #ifdef CONFIG_BQL | |
1326 | sysfs_remove_group(&queue->kobj, &dql_group); | |
1327 | #endif | |
1328 | kobject_put(&queue->kobj); | |
1329 | } | |
1d24eb48 TH |
1330 | |
1331 | return error; | |
bf264145 TH |
1332 | #else |
1333 | return 0; | |
ccf5ff69 | 1334 | #endif /* CONFIG_SYSFS */ |
1d24eb48 TH |
1335 | } |
1336 | ||
6b53dafe | 1337 | static int register_queue_kobjects(struct net_device *dev) |
1d24eb48 | 1338 | { |
bf264145 | 1339 | int error = 0, txq = 0, rxq = 0, real_rx = 0, real_tx = 0; |
1d24eb48 | 1340 | |
ccf5ff69 | 1341 | #ifdef CONFIG_SYSFS |
6b53dafe WC |
1342 | dev->queues_kset = kset_create_and_add("queues", |
1343 | NULL, &dev->dev.kobj); | |
1344 | if (!dev->queues_kset) | |
62fe0b40 | 1345 | return -ENOMEM; |
6b53dafe | 1346 | real_rx = dev->real_num_rx_queues; |
bf264145 | 1347 | #endif |
6b53dafe | 1348 | real_tx = dev->real_num_tx_queues; |
1d24eb48 | 1349 | |
6b53dafe | 1350 | error = net_rx_queue_update_kobjects(dev, 0, real_rx); |
1d24eb48 TH |
1351 | if (error) |
1352 | goto error; | |
bf264145 | 1353 | rxq = real_rx; |
1d24eb48 | 1354 | |
6b53dafe | 1355 | error = netdev_queue_update_kobjects(dev, 0, real_tx); |
1d24eb48 TH |
1356 | if (error) |
1357 | goto error; | |
bf264145 | 1358 | txq = real_tx; |
1d24eb48 TH |
1359 | |
1360 | return 0; | |
1361 | ||
1362 | error: | |
6b53dafe WC |
1363 | netdev_queue_update_kobjects(dev, txq, 0); |
1364 | net_rx_queue_update_kobjects(dev, rxq, 0); | |
1d24eb48 | 1365 | return error; |
62fe0b40 | 1366 | } |
0a9627f2 | 1367 | |
6b53dafe | 1368 | static void remove_queue_kobjects(struct net_device *dev) |
62fe0b40 | 1369 | { |
bf264145 TH |
1370 | int real_rx = 0, real_tx = 0; |
1371 | ||
a953be53 | 1372 | #ifdef CONFIG_SYSFS |
6b53dafe | 1373 | real_rx = dev->real_num_rx_queues; |
bf264145 | 1374 | #endif |
6b53dafe | 1375 | real_tx = dev->real_num_tx_queues; |
bf264145 | 1376 | |
6b53dafe WC |
1377 | net_rx_queue_update_kobjects(dev, real_rx, 0); |
1378 | netdev_queue_update_kobjects(dev, real_tx, 0); | |
ccf5ff69 | 1379 | #ifdef CONFIG_SYSFS |
6b53dafe | 1380 | kset_unregister(dev->queues_kset); |
bf264145 | 1381 | #endif |
0a9627f2 | 1382 | } |
608b4b95 | 1383 | |
7dc5dbc8 EB |
1384 | static bool net_current_may_mount(void) |
1385 | { | |
1386 | struct net *net = current->nsproxy->net_ns; | |
1387 | ||
1388 | return ns_capable(net->user_ns, CAP_SYS_ADMIN); | |
1389 | } | |
1390 | ||
a685e089 | 1391 | static void *net_grab_current_ns(void) |
608b4b95 | 1392 | { |
a685e089 AV |
1393 | struct net *ns = current->nsproxy->net_ns; |
1394 | #ifdef CONFIG_NET_NS | |
1395 | if (ns) | |
1396 | atomic_inc(&ns->passive); | |
1397 | #endif | |
1398 | return ns; | |
608b4b95 EB |
1399 | } |
1400 | ||
1401 | static const void *net_initial_ns(void) | |
1402 | { | |
1403 | return &init_net; | |
1404 | } | |
1405 | ||
1406 | static const void *net_netlink_ns(struct sock *sk) | |
1407 | { | |
1408 | return sock_net(sk); | |
1409 | } | |
1410 | ||
04600794 | 1411 | struct kobj_ns_type_operations net_ns_type_operations = { |
608b4b95 | 1412 | .type = KOBJ_NS_TYPE_NET, |
7dc5dbc8 | 1413 | .current_may_mount = net_current_may_mount, |
a685e089 | 1414 | .grab_current_ns = net_grab_current_ns, |
608b4b95 EB |
1415 | .netlink_ns = net_netlink_ns, |
1416 | .initial_ns = net_initial_ns, | |
a685e089 | 1417 | .drop_ns = net_drop_ns, |
608b4b95 | 1418 | }; |
04600794 | 1419 | EXPORT_SYMBOL_GPL(net_ns_type_operations); |
608b4b95 | 1420 | |
7eff2e7a | 1421 | static int netdev_uevent(struct device *d, struct kobj_uevent_env *env) |
1da177e4 | 1422 | { |
43cb76d9 | 1423 | struct net_device *dev = to_net_dev(d); |
7eff2e7a | 1424 | int retval; |
1da177e4 | 1425 | |
312c004d | 1426 | /* pass interface to uevent. */ |
7eff2e7a | 1427 | retval = add_uevent_var(env, "INTERFACE=%s", dev->name); |
bf62456e ER |
1428 | if (retval) |
1429 | goto exit; | |
ca2f37db JT |
1430 | |
1431 | /* pass ifindex to uevent. | |
1432 | * ifindex is useful as it won't change (interface name may change) | |
1433 | * and is what RtNetlink uses natively. */ | |
7eff2e7a | 1434 | retval = add_uevent_var(env, "IFINDEX=%d", dev->ifindex); |
1da177e4 | 1435 | |
bf62456e | 1436 | exit: |
bf62456e | 1437 | return retval; |
1da177e4 | 1438 | } |
1da177e4 LT |
1439 | |
1440 | /* | |
4ec93edb | 1441 | * netdev_release -- destroy and free a dead device. |
43cb76d9 | 1442 | * Called when last reference to device kobject is gone. |
1da177e4 | 1443 | */ |
43cb76d9 | 1444 | static void netdev_release(struct device *d) |
1da177e4 | 1445 | { |
43cb76d9 | 1446 | struct net_device *dev = to_net_dev(d); |
1da177e4 LT |
1447 | |
1448 | BUG_ON(dev->reg_state != NETREG_RELEASED); | |
1449 | ||
0b815a1a | 1450 | kfree(dev->ifalias); |
74d332c1 | 1451 | netdev_freemem(dev); |
1da177e4 LT |
1452 | } |
1453 | ||
608b4b95 EB |
1454 | static const void *net_namespace(struct device *d) |
1455 | { | |
5c29482d GT |
1456 | struct net_device *dev = to_net_dev(d); |
1457 | ||
608b4b95 EB |
1458 | return dev_net(dev); |
1459 | } | |
1460 | ||
1da177e4 LT |
1461 | static struct class net_class = { |
1462 | .name = "net", | |
43cb76d9 | 1463 | .dev_release = netdev_release, |
6be8aeef | 1464 | .dev_groups = net_class_groups, |
43cb76d9 | 1465 | .dev_uevent = netdev_uevent, |
608b4b95 EB |
1466 | .ns_type = &net_ns_type_operations, |
1467 | .namespace = net_namespace, | |
1da177e4 LT |
1468 | }; |
1469 | ||
aa836df9 FF |
1470 | #ifdef CONFIG_OF_NET |
1471 | static int of_dev_node_match(struct device *dev, const void *data) | |
1472 | { | |
1473 | int ret = 0; | |
1474 | ||
1475 | if (dev->parent) | |
1476 | ret = dev->parent->of_node == data; | |
1477 | ||
1478 | return ret == 0 ? dev->of_node == data : ret; | |
1479 | } | |
1480 | ||
9861f720 RK |
1481 | /* |
1482 | * of_find_net_device_by_node - lookup the net device for the device node | |
1483 | * @np: OF device node | |
1484 | * | |
1485 | * Looks up the net_device structure corresponding with the device node. | |
1486 | * If successful, returns a pointer to the net_device with the embedded | |
1487 | * struct device refcount incremented by one, or NULL on failure. The | |
1488 | * refcount must be dropped when done with the net_device. | |
1489 | */ | |
aa836df9 FF |
1490 | struct net_device *of_find_net_device_by_node(struct device_node *np) |
1491 | { | |
1492 | struct device *dev; | |
1493 | ||
1494 | dev = class_find_device(&net_class, NULL, np, of_dev_node_match); | |
1495 | if (!dev) | |
1496 | return NULL; | |
1497 | ||
1498 | return to_net_dev(dev); | |
1499 | } | |
1500 | EXPORT_SYMBOL(of_find_net_device_by_node); | |
1501 | #endif | |
1502 | ||
9093bbb2 SH |
1503 | /* Delete sysfs entries but hold kobject reference until after all |
1504 | * netdev references are gone. | |
1505 | */ | |
6b53dafe | 1506 | void netdev_unregister_kobject(struct net_device *ndev) |
1da177e4 | 1507 | { |
6b53dafe | 1508 | struct device *dev = &(ndev->dev); |
9093bbb2 SH |
1509 | |
1510 | kobject_get(&dev->kobj); | |
3891845e | 1511 | |
6b53dafe | 1512 | remove_queue_kobjects(ndev); |
0a9627f2 | 1513 | |
9802c8e2 ML |
1514 | pm_runtime_set_memalloc_noio(dev, false); |
1515 | ||
9093bbb2 | 1516 | device_del(dev); |
1da177e4 LT |
1517 | } |
1518 | ||
1519 | /* Create sysfs entries for network device. */ | |
6b53dafe | 1520 | int netdev_register_kobject(struct net_device *ndev) |
1da177e4 | 1521 | { |
6b53dafe WC |
1522 | struct device *dev = &(ndev->dev); |
1523 | const struct attribute_group **groups = ndev->sysfs_groups; | |
0a9627f2 | 1524 | int error = 0; |
1da177e4 | 1525 | |
a1b3f594 | 1526 | device_initialize(dev); |
43cb76d9 | 1527 | dev->class = &net_class; |
6b53dafe | 1528 | dev->platform_data = ndev; |
43cb76d9 | 1529 | dev->groups = groups; |
1da177e4 | 1530 | |
6b53dafe | 1531 | dev_set_name(dev, "%s", ndev->name); |
1da177e4 | 1532 | |
8b41d188 | 1533 | #ifdef CONFIG_SYSFS |
0c509a6c EB |
1534 | /* Allow for a device specific group */ |
1535 | if (*groups) | |
1536 | groups++; | |
1da177e4 | 1537 | |
0c509a6c | 1538 | *groups++ = &netstat_group; |
38c1a01c JB |
1539 | |
1540 | #if IS_ENABLED(CONFIG_WIRELESS_EXT) || IS_ENABLED(CONFIG_CFG80211) | |
6b53dafe | 1541 | if (ndev->ieee80211_ptr) |
38c1a01c JB |
1542 | *groups++ = &wireless_group; |
1543 | #if IS_ENABLED(CONFIG_WIRELESS_EXT) | |
6b53dafe | 1544 | else if (ndev->wireless_handlers) |
38c1a01c JB |
1545 | *groups++ = &wireless_group; |
1546 | #endif | |
1547 | #endif | |
8b41d188 | 1548 | #endif /* CONFIG_SYSFS */ |
1da177e4 | 1549 | |
0a9627f2 TH |
1550 | error = device_add(dev); |
1551 | if (error) | |
1552 | return error; | |
1553 | ||
6b53dafe | 1554 | error = register_queue_kobjects(ndev); |
0a9627f2 TH |
1555 | if (error) { |
1556 | device_del(dev); | |
1557 | return error; | |
1558 | } | |
1559 | ||
9802c8e2 ML |
1560 | pm_runtime_set_memalloc_noio(dev, true); |
1561 | ||
0a9627f2 | 1562 | return error; |
1da177e4 LT |
1563 | } |
1564 | ||
58292cbe TH |
1565 | int netdev_class_create_file_ns(struct class_attribute *class_attr, |
1566 | const void *ns) | |
b8a9787e | 1567 | { |
58292cbe | 1568 | return class_create_file_ns(&net_class, class_attr, ns); |
b8a9787e | 1569 | } |
58292cbe | 1570 | EXPORT_SYMBOL(netdev_class_create_file_ns); |
b8a9787e | 1571 | |
58292cbe TH |
1572 | void netdev_class_remove_file_ns(struct class_attribute *class_attr, |
1573 | const void *ns) | |
b8a9787e | 1574 | { |
58292cbe | 1575 | class_remove_file_ns(&net_class, class_attr, ns); |
b8a9787e | 1576 | } |
58292cbe | 1577 | EXPORT_SYMBOL(netdev_class_remove_file_ns); |
b8a9787e | 1578 | |
a48d4bb0 | 1579 | int __init netdev_kobject_init(void) |
1da177e4 | 1580 | { |
608b4b95 | 1581 | kobj_ns_type_register(&net_ns_type_operations); |
1da177e4 LT |
1582 | return class_register(&net_class); |
1583 | } |