Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * net-sysfs.c - network device class and attributes |
| 3 | * |
| 4 | * Copyright (c) 2003 Stephen Hemminger <shemminger@osdl.org> |
YOSHIFUJI Hideaki | 4ec93ed | 2007-02-09 23:24:36 +0900 | [diff] [blame] | 5 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Randy Dunlap | 4fc268d | 2006-01-11 12:17:47 -0800 | [diff] [blame] | 12 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/kernel.h> |
| 14 | #include <linux/netdevice.h> |
| 15 | #include <linux/if_arp.h> |
| 16 | #include <net/sock.h> |
| 17 | #include <linux/rtnetlink.h> |
| 18 | #include <linux/wireless.h> |
Andrey Borzenkov | 6dd214b | 2006-01-09 20:51:28 -0800 | [diff] [blame] | 19 | #include <net/iw_handler.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | |
Pavel Emelyanov | 342709e | 2007-10-23 21:14:45 -0700 | [diff] [blame] | 21 | #include "net-sysfs.h" |
| 22 | |
Eric W. Biederman | 8b41d18 | 2007-09-26 22:02:53 -0700 | [diff] [blame] | 23 | #ifdef CONFIG_SYSFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | static const char fmt_hex[] = "%#x\n"; |
David S. Miller | d1102b5 | 2005-05-29 20:28:25 -0700 | [diff] [blame] | 25 | static const char fmt_long_hex[] = "%#lx\n"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | static const char fmt_dec[] = "%d\n"; |
| 27 | static const char fmt_ulong[] = "%lu\n"; |
| 28 | |
YOSHIFUJI Hideaki | 4ec93ed | 2007-02-09 23:24:36 +0900 | [diff] [blame] | 29 | static inline int dev_isalive(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | { |
Stephen Hemminger | fe9925b | 2006-05-06 17:56:03 -0700 | [diff] [blame] | 31 | return dev->reg_state <= NETREG_REGISTERED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | } |
| 33 | |
| 34 | /* use same locking rules as GIF* ioctl's */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 35 | static ssize_t netdev_show(const struct device *dev, |
| 36 | struct device_attribute *attr, char *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | ssize_t (*format)(const struct net_device *, char *)) |
| 38 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 39 | struct net_device *net = to_net_dev(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | ssize_t ret = -EINVAL; |
| 41 | |
| 42 | read_lock(&dev_base_lock); |
| 43 | if (dev_isalive(net)) |
| 44 | ret = (*format)(net, buf); |
| 45 | read_unlock(&dev_base_lock); |
| 46 | |
| 47 | return ret; |
| 48 | } |
| 49 | |
| 50 | /* generate a show function for simple field */ |
| 51 | #define NETDEVICE_SHOW(field, format_string) \ |
| 52 | static ssize_t format_##field(const struct net_device *net, char *buf) \ |
| 53 | { \ |
| 54 | return sprintf(buf, format_string, net->field); \ |
| 55 | } \ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 56 | static ssize_t show_##field(struct device *dev, \ |
| 57 | struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | { \ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 59 | return netdev_show(dev, attr, buf, format_##field); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | } |
| 61 | |
| 62 | |
| 63 | /* use same locking and permission rules as SIF* ioctl's */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 64 | static ssize_t netdev_store(struct device *dev, struct device_attribute *attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | const char *buf, size_t len, |
| 66 | int (*set)(struct net_device *, unsigned long)) |
| 67 | { |
| 68 | struct net_device *net = to_net_dev(dev); |
| 69 | char *endp; |
| 70 | unsigned long new; |
| 71 | int ret = -EINVAL; |
| 72 | |
| 73 | if (!capable(CAP_NET_ADMIN)) |
| 74 | return -EPERM; |
| 75 | |
| 76 | new = simple_strtoul(buf, &endp, 0); |
| 77 | if (endp == buf) |
| 78 | goto err; |
| 79 | |
Stephen Hemminger | 5a5990d | 2009-02-26 06:49:24 +0000 | [diff] [blame] | 80 | if (!rtnl_trylock()) |
Eric W. Biederman | 336ca57 | 2009-05-13 16:57:25 +0000 | [diff] [blame] | 81 | return restart_syscall(); |
Stephen Hemminger | 5a5990d | 2009-02-26 06:49:24 +0000 | [diff] [blame] | 82 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | if (dev_isalive(net)) { |
| 84 | if ((ret = (*set)(net, new)) == 0) |
| 85 | ret = len; |
| 86 | } |
| 87 | rtnl_unlock(); |
| 88 | err: |
| 89 | return ret; |
| 90 | } |
| 91 | |
David Woodhouse | 9d29672 | 2008-04-20 16:07:43 -0700 | [diff] [blame] | 92 | NETDEVICE_SHOW(dev_id, fmt_hex); |
Kay Sievers | fd586ba | 2005-12-19 01:42:56 +0100 | [diff] [blame] | 93 | NETDEVICE_SHOW(addr_len, fmt_dec); |
| 94 | NETDEVICE_SHOW(iflink, fmt_dec); |
| 95 | NETDEVICE_SHOW(ifindex, fmt_dec); |
| 96 | NETDEVICE_SHOW(features, fmt_long_hex); |
| 97 | NETDEVICE_SHOW(type, fmt_dec); |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 98 | NETDEVICE_SHOW(link_mode, fmt_dec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | |
| 100 | /* use same locking rules as GIFHWADDR ioctl's */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 101 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, |
| 102 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | { |
| 104 | struct net_device *net = to_net_dev(dev); |
| 105 | ssize_t ret = -EINVAL; |
| 106 | |
| 107 | read_lock(&dev_base_lock); |
| 108 | if (dev_isalive(net)) |
Michael Chan | 7ffc49a | 2007-12-24 21:28:09 -0800 | [diff] [blame] | 109 | ret = sysfs_format_mac(buf, net->dev_addr, net->addr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | read_unlock(&dev_base_lock); |
| 111 | return ret; |
| 112 | } |
| 113 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 114 | static ssize_t show_broadcast(struct device *dev, |
| 115 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | { |
| 117 | struct net_device *net = to_net_dev(dev); |
| 118 | if (dev_isalive(net)) |
Michael Chan | 7ffc49a | 2007-12-24 21:28:09 -0800 | [diff] [blame] | 119 | return sysfs_format_mac(buf, net->broadcast, net->addr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | return -EINVAL; |
| 121 | } |
| 122 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 123 | static ssize_t show_carrier(struct device *dev, |
| 124 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | { |
| 126 | struct net_device *netdev = to_net_dev(dev); |
| 127 | if (netif_running(netdev)) { |
| 128 | return sprintf(buf, fmt_dec, !!netif_carrier_ok(netdev)); |
| 129 | } |
| 130 | return -EINVAL; |
| 131 | } |
| 132 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 133 | static ssize_t show_dormant(struct device *dev, |
| 134 | struct device_attribute *attr, char *buf) |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 135 | { |
| 136 | struct net_device *netdev = to_net_dev(dev); |
| 137 | |
| 138 | if (netif_running(netdev)) |
| 139 | return sprintf(buf, fmt_dec, !!netif_dormant(netdev)); |
| 140 | |
| 141 | return -EINVAL; |
| 142 | } |
| 143 | |
| 144 | static const char *operstates[] = { |
| 145 | "unknown", |
| 146 | "notpresent", /* currently unused */ |
| 147 | "down", |
| 148 | "lowerlayerdown", |
| 149 | "testing", /* currently unused */ |
| 150 | "dormant", |
| 151 | "up" |
| 152 | }; |
| 153 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 154 | static ssize_t show_operstate(struct device *dev, |
| 155 | struct device_attribute *attr, char *buf) |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 156 | { |
| 157 | const struct net_device *netdev = to_net_dev(dev); |
| 158 | unsigned char operstate; |
| 159 | |
| 160 | read_lock(&dev_base_lock); |
| 161 | operstate = netdev->operstate; |
| 162 | if (!netif_running(netdev)) |
| 163 | operstate = IF_OPER_DOWN; |
| 164 | read_unlock(&dev_base_lock); |
| 165 | |
Adrian Bunk | e3a5cd9 | 2006-04-05 22:19:47 -0700 | [diff] [blame] | 166 | if (operstate >= ARRAY_SIZE(operstates)) |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 167 | return -EINVAL; /* should not happen */ |
| 168 | |
| 169 | return sprintf(buf, "%s\n", operstates[operstate]); |
| 170 | } |
| 171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | /* read-write attributes */ |
| 173 | NETDEVICE_SHOW(mtu, fmt_dec); |
| 174 | |
| 175 | static int change_mtu(struct net_device *net, unsigned long new_mtu) |
| 176 | { |
| 177 | return dev_set_mtu(net, (int) new_mtu); |
| 178 | } |
| 179 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 180 | static ssize_t store_mtu(struct device *dev, struct device_attribute *attr, |
| 181 | const char *buf, size_t len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 183 | return netdev_store(dev, attr, buf, len, change_mtu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | } |
| 185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | NETDEVICE_SHOW(flags, fmt_hex); |
| 187 | |
| 188 | static int change_flags(struct net_device *net, unsigned long new_flags) |
| 189 | { |
| 190 | return dev_change_flags(net, (unsigned) new_flags); |
| 191 | } |
| 192 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 193 | static ssize_t store_flags(struct device *dev, struct device_attribute *attr, |
| 194 | const char *buf, size_t len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 196 | return netdev_store(dev, attr, buf, len, change_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | } |
| 198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | NETDEVICE_SHOW(tx_queue_len, fmt_ulong); |
| 200 | |
| 201 | static int change_tx_queue_len(struct net_device *net, unsigned long new_len) |
| 202 | { |
| 203 | net->tx_queue_len = new_len; |
| 204 | return 0; |
| 205 | } |
| 206 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 207 | static ssize_t store_tx_queue_len(struct device *dev, |
| 208 | struct device_attribute *attr, |
| 209 | const char *buf, size_t len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 211 | return netdev_store(dev, attr, buf, len, change_tx_queue_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | } |
| 213 | |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 214 | static ssize_t store_ifalias(struct device *dev, struct device_attribute *attr, |
| 215 | const char *buf, size_t len) |
| 216 | { |
| 217 | struct net_device *netdev = to_net_dev(dev); |
| 218 | size_t count = len; |
| 219 | ssize_t ret; |
| 220 | |
| 221 | if (!capable(CAP_NET_ADMIN)) |
| 222 | return -EPERM; |
| 223 | |
| 224 | /* ignore trailing newline */ |
| 225 | if (len > 0 && buf[len - 1] == '\n') |
| 226 | --count; |
| 227 | |
Eric W. Biederman | 336ca57 | 2009-05-13 16:57:25 +0000 | [diff] [blame] | 228 | if (!rtnl_trylock()) |
| 229 | return restart_syscall(); |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 230 | ret = dev_set_alias(netdev, buf, count); |
| 231 | rtnl_unlock(); |
| 232 | |
| 233 | return ret < 0 ? ret : len; |
| 234 | } |
| 235 | |
| 236 | static ssize_t show_ifalias(struct device *dev, |
| 237 | struct device_attribute *attr, char *buf) |
| 238 | { |
| 239 | const struct net_device *netdev = to_net_dev(dev); |
| 240 | ssize_t ret = 0; |
| 241 | |
Eric W. Biederman | 336ca57 | 2009-05-13 16:57:25 +0000 | [diff] [blame] | 242 | if (!rtnl_trylock()) |
| 243 | return restart_syscall(); |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 244 | if (netdev->ifalias) |
| 245 | ret = sprintf(buf, "%s\n", netdev->ifalias); |
| 246 | rtnl_unlock(); |
| 247 | return ret; |
| 248 | } |
| 249 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 250 | static struct device_attribute net_class_attributes[] = { |
Kay Sievers | fd586ba | 2005-12-19 01:42:56 +0100 | [diff] [blame] | 251 | __ATTR(addr_len, S_IRUGO, show_addr_len, NULL), |
David Woodhouse | 9d29672 | 2008-04-20 16:07:43 -0700 | [diff] [blame] | 252 | __ATTR(dev_id, S_IRUGO, show_dev_id, NULL), |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 253 | __ATTR(ifalias, S_IRUGO | S_IWUSR, show_ifalias, store_ifalias), |
Kay Sievers | fd586ba | 2005-12-19 01:42:56 +0100 | [diff] [blame] | 254 | __ATTR(iflink, S_IRUGO, show_iflink, NULL), |
| 255 | __ATTR(ifindex, S_IRUGO, show_ifindex, NULL), |
| 256 | __ATTR(features, S_IRUGO, show_features, NULL), |
| 257 | __ATTR(type, S_IRUGO, show_type, NULL), |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 258 | __ATTR(link_mode, S_IRUGO, show_link_mode, NULL), |
Kay Sievers | fd586ba | 2005-12-19 01:42:56 +0100 | [diff] [blame] | 259 | __ATTR(address, S_IRUGO, show_address, NULL), |
| 260 | __ATTR(broadcast, S_IRUGO, show_broadcast, NULL), |
| 261 | __ATTR(carrier, S_IRUGO, show_carrier, NULL), |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 262 | __ATTR(dormant, S_IRUGO, show_dormant, NULL), |
| 263 | __ATTR(operstate, S_IRUGO, show_operstate, NULL), |
Kay Sievers | fd586ba | 2005-12-19 01:42:56 +0100 | [diff] [blame] | 264 | __ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu), |
| 265 | __ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags), |
| 266 | __ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len, |
| 267 | store_tx_queue_len), |
Kay Sievers | fd586ba | 2005-12-19 01:42:56 +0100 | [diff] [blame] | 268 | {} |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | }; |
| 270 | |
| 271 | /* Show a given an attribute in the statistics group */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 272 | static ssize_t netstat_show(const struct device *d, |
| 273 | struct device_attribute *attr, char *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | unsigned long offset) |
| 275 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 276 | struct net_device *dev = to_net_dev(d); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | ssize_t ret = -EINVAL; |
| 278 | |
Pavel Emelyanov | df1b86c | 2007-11-30 00:42:42 +1100 | [diff] [blame] | 279 | WARN_ON(offset > sizeof(struct net_device_stats) || |
| 280 | offset % sizeof(unsigned long) != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
| 282 | read_lock(&dev_base_lock); |
Pavel Emelyanov | 96e7408 | 2008-05-21 14:12:46 -0700 | [diff] [blame] | 283 | if (dev_isalive(dev)) { |
Stephen Hemminger | eeda3fd | 2008-11-19 21:40:23 -0800 | [diff] [blame] | 284 | const struct net_device_stats *stats = dev_get_stats(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | ret = sprintf(buf, fmt_ulong, |
| 286 | *(unsigned long *)(((u8 *) stats) + offset)); |
Pavel Emelyanov | 96e7408 | 2008-05-21 14:12:46 -0700 | [diff] [blame] | 287 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | read_unlock(&dev_base_lock); |
| 289 | return ret; |
| 290 | } |
| 291 | |
| 292 | /* generate a read-only statistics attribute */ |
| 293 | #define NETSTAT_ENTRY(name) \ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 294 | static ssize_t show_##name(struct device *d, \ |
| 295 | struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | { \ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 297 | return netstat_show(d, attr, buf, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | offsetof(struct net_device_stats, name)); \ |
| 299 | } \ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 300 | static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | |
| 302 | NETSTAT_ENTRY(rx_packets); |
| 303 | NETSTAT_ENTRY(tx_packets); |
| 304 | NETSTAT_ENTRY(rx_bytes); |
| 305 | NETSTAT_ENTRY(tx_bytes); |
| 306 | NETSTAT_ENTRY(rx_errors); |
| 307 | NETSTAT_ENTRY(tx_errors); |
| 308 | NETSTAT_ENTRY(rx_dropped); |
| 309 | NETSTAT_ENTRY(tx_dropped); |
| 310 | NETSTAT_ENTRY(multicast); |
| 311 | NETSTAT_ENTRY(collisions); |
| 312 | NETSTAT_ENTRY(rx_length_errors); |
| 313 | NETSTAT_ENTRY(rx_over_errors); |
| 314 | NETSTAT_ENTRY(rx_crc_errors); |
| 315 | NETSTAT_ENTRY(rx_frame_errors); |
| 316 | NETSTAT_ENTRY(rx_fifo_errors); |
| 317 | NETSTAT_ENTRY(rx_missed_errors); |
| 318 | NETSTAT_ENTRY(tx_aborted_errors); |
| 319 | NETSTAT_ENTRY(tx_carrier_errors); |
| 320 | NETSTAT_ENTRY(tx_fifo_errors); |
| 321 | NETSTAT_ENTRY(tx_heartbeat_errors); |
| 322 | NETSTAT_ENTRY(tx_window_errors); |
| 323 | NETSTAT_ENTRY(rx_compressed); |
| 324 | NETSTAT_ENTRY(tx_compressed); |
| 325 | |
| 326 | static struct attribute *netstat_attrs[] = { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 327 | &dev_attr_rx_packets.attr, |
| 328 | &dev_attr_tx_packets.attr, |
| 329 | &dev_attr_rx_bytes.attr, |
| 330 | &dev_attr_tx_bytes.attr, |
| 331 | &dev_attr_rx_errors.attr, |
| 332 | &dev_attr_tx_errors.attr, |
| 333 | &dev_attr_rx_dropped.attr, |
| 334 | &dev_attr_tx_dropped.attr, |
| 335 | &dev_attr_multicast.attr, |
| 336 | &dev_attr_collisions.attr, |
| 337 | &dev_attr_rx_length_errors.attr, |
| 338 | &dev_attr_rx_over_errors.attr, |
| 339 | &dev_attr_rx_crc_errors.attr, |
| 340 | &dev_attr_rx_frame_errors.attr, |
| 341 | &dev_attr_rx_fifo_errors.attr, |
| 342 | &dev_attr_rx_missed_errors.attr, |
| 343 | &dev_attr_tx_aborted_errors.attr, |
| 344 | &dev_attr_tx_carrier_errors.attr, |
| 345 | &dev_attr_tx_fifo_errors.attr, |
| 346 | &dev_attr_tx_heartbeat_errors.attr, |
| 347 | &dev_attr_tx_window_errors.attr, |
| 348 | &dev_attr_rx_compressed.attr, |
| 349 | &dev_attr_tx_compressed.attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | NULL |
| 351 | }; |
| 352 | |
| 353 | |
| 354 | static struct attribute_group netstat_group = { |
| 355 | .name = "statistics", |
| 356 | .attrs = netstat_attrs, |
| 357 | }; |
| 358 | |
Johannes Berg | 22bb1be | 2008-07-10 11:16:47 +0200 | [diff] [blame] | 359 | #ifdef CONFIG_WIRELESS_EXT_SYSFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | /* helper function that does all the locking etc for wireless stats */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 361 | static ssize_t wireless_show(struct device *d, char *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | ssize_t (*format)(const struct iw_statistics *, |
| 363 | char *)) |
| 364 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 365 | struct net_device *dev = to_net_dev(d); |
Andrey Borzenkov | 6dd214b | 2006-01-09 20:51:28 -0800 | [diff] [blame] | 366 | const struct iw_statistics *iw = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | ssize_t ret = -EINVAL; |
YOSHIFUJI Hideaki | 4ec93ed | 2007-02-09 23:24:36 +0900 | [diff] [blame] | 368 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | read_lock(&dev_base_lock); |
Andrey Borzenkov | 6dd214b | 2006-01-09 20:51:28 -0800 | [diff] [blame] | 370 | if (dev_isalive(dev)) { |
Stephen Hemminger | e71a478 | 2007-04-10 20:10:33 -0700 | [diff] [blame] | 371 | if (dev->wireless_handlers && |
| 372 | dev->wireless_handlers->get_wireless_stats) |
Andrey Borzenkov | 6dd214b | 2006-01-09 20:51:28 -0800 | [diff] [blame] | 373 | iw = dev->wireless_handlers->get_wireless_stats(dev); |
Andrey Borzenkov | 6dd214b | 2006-01-09 20:51:28 -0800 | [diff] [blame] | 374 | if (iw != NULL) |
| 375 | ret = (*format)(iw, buf); |
| 376 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | read_unlock(&dev_base_lock); |
| 378 | |
| 379 | return ret; |
| 380 | } |
| 381 | |
| 382 | /* show function template for wireless fields */ |
| 383 | #define WIRELESS_SHOW(name, field, format_string) \ |
| 384 | static ssize_t format_iw_##name(const struct iw_statistics *iw, char *buf) \ |
| 385 | { \ |
| 386 | return sprintf(buf, format_string, iw->field); \ |
| 387 | } \ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 388 | static ssize_t show_iw_##name(struct device *d, \ |
| 389 | struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | { \ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 391 | return wireless_show(d, buf, format_iw_##name); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | } \ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 393 | static DEVICE_ATTR(name, S_IRUGO, show_iw_##name, NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | |
| 395 | WIRELESS_SHOW(status, status, fmt_hex); |
| 396 | WIRELESS_SHOW(link, qual.qual, fmt_dec); |
| 397 | WIRELESS_SHOW(level, qual.level, fmt_dec); |
| 398 | WIRELESS_SHOW(noise, qual.noise, fmt_dec); |
| 399 | WIRELESS_SHOW(nwid, discard.nwid, fmt_dec); |
| 400 | WIRELESS_SHOW(crypt, discard.code, fmt_dec); |
| 401 | WIRELESS_SHOW(fragment, discard.fragment, fmt_dec); |
| 402 | WIRELESS_SHOW(misc, discard.misc, fmt_dec); |
| 403 | WIRELESS_SHOW(retries, discard.retries, fmt_dec); |
| 404 | WIRELESS_SHOW(beacon, miss.beacon, fmt_dec); |
| 405 | |
| 406 | static struct attribute *wireless_attrs[] = { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 407 | &dev_attr_status.attr, |
| 408 | &dev_attr_link.attr, |
| 409 | &dev_attr_level.attr, |
| 410 | &dev_attr_noise.attr, |
| 411 | &dev_attr_nwid.attr, |
| 412 | &dev_attr_crypt.attr, |
| 413 | &dev_attr_fragment.attr, |
| 414 | &dev_attr_retries.attr, |
| 415 | &dev_attr_misc.attr, |
| 416 | &dev_attr_beacon.attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | NULL |
| 418 | }; |
| 419 | |
| 420 | static struct attribute_group wireless_group = { |
| 421 | .name = "wireless", |
| 422 | .attrs = wireless_attrs, |
| 423 | }; |
| 424 | #endif |
| 425 | |
Eric W. Biederman | 8b41d18 | 2007-09-26 22:02:53 -0700 | [diff] [blame] | 426 | #endif /* CONFIG_SYSFS */ |
| 427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | #ifdef CONFIG_HOTPLUG |
Kay Sievers | 7eff2e7 | 2007-08-14 15:15:12 +0200 | [diff] [blame] | 429 | static int netdev_uevent(struct device *d, struct kobj_uevent_env *env) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 431 | struct net_device *dev = to_net_dev(d); |
Kay Sievers | 7eff2e7 | 2007-08-14 15:15:12 +0200 | [diff] [blame] | 432 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | |
Daniel Lezcano | 09bb521 | 2008-11-25 16:46:37 -0800 | [diff] [blame] | 434 | if (!net_eq(dev_net(dev), &init_net)) |
| 435 | return 0; |
| 436 | |
Kay Sievers | 312c004 | 2005-11-16 09:00:00 +0100 | [diff] [blame] | 437 | /* pass interface to uevent. */ |
Kay Sievers | 7eff2e7 | 2007-08-14 15:15:12 +0200 | [diff] [blame] | 438 | retval = add_uevent_var(env, "INTERFACE=%s", dev->name); |
Eric Rannaud | bf62456 | 2007-03-30 22:23:12 -0700 | [diff] [blame] | 439 | if (retval) |
| 440 | goto exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | |
Jean Tourrilhes | ca2f37d | 2007-03-07 10:49:30 -0800 | [diff] [blame] | 442 | /* pass ifindex to uevent. |
| 443 | * ifindex is useful as it won't change (interface name may change) |
| 444 | * and is what RtNetlink uses natively. */ |
Kay Sievers | 7eff2e7 | 2007-08-14 15:15:12 +0200 | [diff] [blame] | 445 | retval = add_uevent_var(env, "IFINDEX=%d", dev->ifindex); |
Jean Tourrilhes | ca2f37d | 2007-03-07 10:49:30 -0800 | [diff] [blame] | 446 | |
Eric Rannaud | bf62456 | 2007-03-30 22:23:12 -0700 | [diff] [blame] | 447 | exit: |
Eric Rannaud | bf62456 | 2007-03-30 22:23:12 -0700 | [diff] [blame] | 448 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | } |
| 450 | #endif |
| 451 | |
| 452 | /* |
YOSHIFUJI Hideaki | 4ec93ed | 2007-02-09 23:24:36 +0900 | [diff] [blame] | 453 | * netdev_release -- destroy and free a dead device. |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 454 | * Called when last reference to device kobject is gone. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 456 | static void netdev_release(struct device *d) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 458 | struct net_device *dev = to_net_dev(d); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | |
| 460 | BUG_ON(dev->reg_state != NETREG_RELEASED); |
| 461 | |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 462 | kfree(dev->ifalias); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | kfree((char *)dev - dev->padded); |
| 464 | } |
| 465 | |
| 466 | static struct class net_class = { |
| 467 | .name = "net", |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 468 | .dev_release = netdev_release, |
Eric W. Biederman | 8b41d18 | 2007-09-26 22:02:53 -0700 | [diff] [blame] | 469 | #ifdef CONFIG_SYSFS |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 470 | .dev_attrs = net_class_attributes, |
Eric W. Biederman | 8b41d18 | 2007-09-26 22:02:53 -0700 | [diff] [blame] | 471 | #endif /* CONFIG_SYSFS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | #ifdef CONFIG_HOTPLUG |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 473 | .dev_uevent = netdev_uevent, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | #endif |
| 475 | }; |
| 476 | |
Stephen Hemminger | 9093bbb | 2007-05-19 15:39:25 -0700 | [diff] [blame] | 477 | /* Delete sysfs entries but hold kobject reference until after all |
| 478 | * netdev references are gone. |
| 479 | */ |
Eric W. Biederman | 8b41d18 | 2007-09-26 22:02:53 -0700 | [diff] [blame] | 480 | void netdev_unregister_kobject(struct net_device * net) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | { |
Stephen Hemminger | 9093bbb | 2007-05-19 15:39:25 -0700 | [diff] [blame] | 482 | struct device *dev = &(net->dev); |
| 483 | |
| 484 | kobject_get(&dev->kobj); |
Eric W. Biederman | 3891845 | 2008-10-27 17:51:47 -0700 | [diff] [blame] | 485 | |
| 486 | if (dev_net(net) != &init_net) |
| 487 | return; |
| 488 | |
Stephen Hemminger | 9093bbb | 2007-05-19 15:39:25 -0700 | [diff] [blame] | 489 | device_del(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | } |
| 491 | |
| 492 | /* Create sysfs entries for network device. */ |
Eric W. Biederman | 8b41d18 | 2007-09-26 22:02:53 -0700 | [diff] [blame] | 493 | int netdev_register_kobject(struct net_device *net) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | { |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 495 | struct device *dev = &(net->dev); |
Stephen Hemminger | fe9925b | 2006-05-06 17:56:03 -0700 | [diff] [blame] | 496 | struct attribute_group **groups = net->sysfs_groups; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 498 | dev->class = &net_class; |
| 499 | dev->platform_data = net; |
| 500 | dev->groups = groups; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | |
Stephen Hemminger | a220547 | 2009-03-09 13:51:55 +0000 | [diff] [blame] | 502 | dev_set_name(dev, "%s", net->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
Eric W. Biederman | 8b41d18 | 2007-09-26 22:02:53 -0700 | [diff] [blame] | 504 | #ifdef CONFIG_SYSFS |
Pavel Emelyanov | 96e7408 | 2008-05-21 14:12:46 -0700 | [diff] [blame] | 505 | *groups++ = &netstat_group; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
Johannes Berg | 22bb1be | 2008-07-10 11:16:47 +0200 | [diff] [blame] | 507 | #ifdef CONFIG_WIRELESS_EXT_SYSFS |
John W. Linville | baef186 | 2006-09-08 16:04:05 -0400 | [diff] [blame] | 508 | if (net->wireless_handlers && net->wireless_handlers->get_wireless_stats) |
Stephen Hemminger | fe9925b | 2006-05-06 17:56:03 -0700 | [diff] [blame] | 509 | *groups++ = &wireless_group; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | #endif |
Eric W. Biederman | 8b41d18 | 2007-09-26 22:02:53 -0700 | [diff] [blame] | 511 | #endif /* CONFIG_SYSFS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | |
Eric W. Biederman | 3891845 | 2008-10-27 17:51:47 -0700 | [diff] [blame] | 513 | if (dev_net(net) != &init_net) |
| 514 | return 0; |
| 515 | |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 516 | return device_add(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | } |
| 518 | |
Jay Vosburgh | b8a9787 | 2008-06-13 18:12:04 -0700 | [diff] [blame] | 519 | int netdev_class_create_file(struct class_attribute *class_attr) |
| 520 | { |
| 521 | return class_create_file(&net_class, class_attr); |
| 522 | } |
| 523 | |
| 524 | void netdev_class_remove_file(struct class_attribute *class_attr) |
| 525 | { |
| 526 | class_remove_file(&net_class, class_attr); |
| 527 | } |
| 528 | |
| 529 | EXPORT_SYMBOL(netdev_class_create_file); |
| 530 | EXPORT_SYMBOL(netdev_class_remove_file); |
| 531 | |
Daniel Lezcano | aaf8cdc | 2008-05-02 17:00:58 -0700 | [diff] [blame] | 532 | void netdev_initialize_kobject(struct net_device *net) |
| 533 | { |
| 534 | struct device *device = &(net->dev); |
| 535 | device_initialize(device); |
| 536 | } |
| 537 | |
Eric W. Biederman | 8b41d18 | 2007-09-26 22:02:53 -0700 | [diff] [blame] | 538 | int netdev_kobject_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | { |
| 540 | return class_register(&net_class); |
| 541 | } |