11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * net-sysfs.c - network device class and attributes 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (c) 2003 Stephen Hemminger <shemminger@osdl.org> 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 71da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 81da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 91da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 101da177e4SLinus Torvalds */ 111da177e4SLinus Torvalds 124fc268d2SRandy Dunlap #include <linux/capability.h> 131da177e4SLinus Torvalds #include <linux/kernel.h> 141da177e4SLinus Torvalds #include <linux/netdevice.h> 151da177e4SLinus Torvalds #include <linux/if_arp.h> 161da177e4SLinus Torvalds #include <net/sock.h> 171da177e4SLinus Torvalds #include <linux/rtnetlink.h> 181da177e4SLinus Torvalds #include <linux/wireless.h> 196dd214b5SAndrey Borzenkov #include <net/iw_handler.h> 201da177e4SLinus Torvalds 21342709efSPavel Emelyanov #include "net-sysfs.h" 22342709efSPavel Emelyanov 238b41d188SEric W. Biederman #ifdef CONFIG_SYSFS 241da177e4SLinus Torvalds static const char fmt_hex[] = "%#x\n"; 25d1102b59SDavid S. Miller static const char fmt_long_hex[] = "%#lx\n"; 261da177e4SLinus Torvalds static const char fmt_dec[] = "%d\n"; 271da177e4SLinus Torvalds static const char fmt_ulong[] = "%lu\n"; 281da177e4SLinus Torvalds 291da177e4SLinus Torvalds static inline int dev_isalive(const struct net_device *dev) 301da177e4SLinus Torvalds { 31fe9925b5SStephen Hemminger return dev->reg_state <= NETREG_REGISTERED; 321da177e4SLinus Torvalds } 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds /* use same locking rules as GIF* ioctl's */ 3543cb76d9SGreg Kroah-Hartman static ssize_t netdev_show(const struct device *dev, 3643cb76d9SGreg Kroah-Hartman struct device_attribute *attr, char *buf, 371da177e4SLinus Torvalds ssize_t (*format)(const struct net_device *, char *)) 381da177e4SLinus Torvalds { 3943cb76d9SGreg Kroah-Hartman struct net_device *net = to_net_dev(dev); 401da177e4SLinus Torvalds ssize_t ret = -EINVAL; 411da177e4SLinus Torvalds 421da177e4SLinus Torvalds read_lock(&dev_base_lock); 431da177e4SLinus Torvalds if (dev_isalive(net)) 441da177e4SLinus Torvalds ret = (*format)(net, buf); 451da177e4SLinus Torvalds read_unlock(&dev_base_lock); 461da177e4SLinus Torvalds 471da177e4SLinus Torvalds return ret; 481da177e4SLinus Torvalds } 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds /* generate a show function for simple field */ 511da177e4SLinus Torvalds #define NETDEVICE_SHOW(field, format_string) \ 521da177e4SLinus Torvalds static ssize_t format_##field(const struct net_device *net, char *buf) \ 531da177e4SLinus Torvalds { \ 541da177e4SLinus Torvalds return sprintf(buf, format_string, net->field); \ 551da177e4SLinus Torvalds } \ 5643cb76d9SGreg Kroah-Hartman static ssize_t show_##field(struct device *dev, \ 5743cb76d9SGreg Kroah-Hartman struct device_attribute *attr, char *buf) \ 581da177e4SLinus Torvalds { \ 5943cb76d9SGreg Kroah-Hartman return netdev_show(dev, attr, buf, format_##field); \ 601da177e4SLinus Torvalds } 611da177e4SLinus Torvalds 621da177e4SLinus Torvalds 631da177e4SLinus Torvalds /* use same locking and permission rules as SIF* ioctl's */ 6443cb76d9SGreg Kroah-Hartman static ssize_t netdev_store(struct device *dev, struct device_attribute *attr, 651da177e4SLinus Torvalds const char *buf, size_t len, 661da177e4SLinus Torvalds int (*set)(struct net_device *, unsigned long)) 671da177e4SLinus Torvalds { 681da177e4SLinus Torvalds struct net_device *net = to_net_dev(dev); 691da177e4SLinus Torvalds char *endp; 701da177e4SLinus Torvalds unsigned long new; 711da177e4SLinus Torvalds int ret = -EINVAL; 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 741da177e4SLinus Torvalds return -EPERM; 751da177e4SLinus Torvalds 761da177e4SLinus Torvalds new = simple_strtoul(buf, &endp, 0); 771da177e4SLinus Torvalds if (endp == buf) 781da177e4SLinus Torvalds goto err; 791da177e4SLinus Torvalds 801da177e4SLinus Torvalds rtnl_lock(); 811da177e4SLinus Torvalds if (dev_isalive(net)) { 821da177e4SLinus Torvalds if ((ret = (*set)(net, new)) == 0) 831da177e4SLinus Torvalds ret = len; 841da177e4SLinus Torvalds } 851da177e4SLinus Torvalds rtnl_unlock(); 861da177e4SLinus Torvalds err: 871da177e4SLinus Torvalds return ret; 881da177e4SLinus Torvalds } 891da177e4SLinus Torvalds 909d29672cSDavid Woodhouse NETDEVICE_SHOW(dev_id, fmt_hex); 91fd586bacSKay Sievers NETDEVICE_SHOW(addr_len, fmt_dec); 92fd586bacSKay Sievers NETDEVICE_SHOW(iflink, fmt_dec); 93fd586bacSKay Sievers NETDEVICE_SHOW(ifindex, fmt_dec); 94fd586bacSKay Sievers NETDEVICE_SHOW(features, fmt_long_hex); 95fd586bacSKay Sievers NETDEVICE_SHOW(type, fmt_dec); 96b00055aaSStefan Rompf NETDEVICE_SHOW(link_mode, fmt_dec); 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds /* use same locking rules as GIFHWADDR ioctl's */ 9943cb76d9SGreg Kroah-Hartman static ssize_t show_address(struct device *dev, struct device_attribute *attr, 10043cb76d9SGreg Kroah-Hartman char *buf) 1011da177e4SLinus Torvalds { 1021da177e4SLinus Torvalds struct net_device *net = to_net_dev(dev); 1031da177e4SLinus Torvalds ssize_t ret = -EINVAL; 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvalds read_lock(&dev_base_lock); 1061da177e4SLinus Torvalds if (dev_isalive(net)) 1077ffc49a6SMichael Chan ret = sysfs_format_mac(buf, net->dev_addr, net->addr_len); 1081da177e4SLinus Torvalds read_unlock(&dev_base_lock); 1091da177e4SLinus Torvalds return ret; 1101da177e4SLinus Torvalds } 1111da177e4SLinus Torvalds 11243cb76d9SGreg Kroah-Hartman static ssize_t show_broadcast(struct device *dev, 11343cb76d9SGreg Kroah-Hartman struct device_attribute *attr, char *buf) 1141da177e4SLinus Torvalds { 1151da177e4SLinus Torvalds struct net_device *net = to_net_dev(dev); 1161da177e4SLinus Torvalds if (dev_isalive(net)) 1177ffc49a6SMichael Chan return sysfs_format_mac(buf, net->broadcast, net->addr_len); 1181da177e4SLinus Torvalds return -EINVAL; 1191da177e4SLinus Torvalds } 1201da177e4SLinus Torvalds 12143cb76d9SGreg Kroah-Hartman static ssize_t show_carrier(struct device *dev, 12243cb76d9SGreg Kroah-Hartman struct device_attribute *attr, char *buf) 1231da177e4SLinus Torvalds { 1241da177e4SLinus Torvalds struct net_device *netdev = to_net_dev(dev); 1251da177e4SLinus Torvalds if (netif_running(netdev)) { 1261da177e4SLinus Torvalds return sprintf(buf, fmt_dec, !!netif_carrier_ok(netdev)); 1271da177e4SLinus Torvalds } 1281da177e4SLinus Torvalds return -EINVAL; 1291da177e4SLinus Torvalds } 1301da177e4SLinus Torvalds 13143cb76d9SGreg Kroah-Hartman static ssize_t show_dormant(struct device *dev, 13243cb76d9SGreg Kroah-Hartman struct device_attribute *attr, char *buf) 133b00055aaSStefan Rompf { 134b00055aaSStefan Rompf struct net_device *netdev = to_net_dev(dev); 135b00055aaSStefan Rompf 136b00055aaSStefan Rompf if (netif_running(netdev)) 137b00055aaSStefan Rompf return sprintf(buf, fmt_dec, !!netif_dormant(netdev)); 138b00055aaSStefan Rompf 139b00055aaSStefan Rompf return -EINVAL; 140b00055aaSStefan Rompf } 141b00055aaSStefan Rompf 142b00055aaSStefan Rompf static const char *operstates[] = { 143b00055aaSStefan Rompf "unknown", 144b00055aaSStefan Rompf "notpresent", /* currently unused */ 145b00055aaSStefan Rompf "down", 146b00055aaSStefan Rompf "lowerlayerdown", 147b00055aaSStefan Rompf "testing", /* currently unused */ 148b00055aaSStefan Rompf "dormant", 149b00055aaSStefan Rompf "up" 150b00055aaSStefan Rompf }; 151b00055aaSStefan Rompf 15243cb76d9SGreg Kroah-Hartman static ssize_t show_operstate(struct device *dev, 15343cb76d9SGreg Kroah-Hartman struct device_attribute *attr, char *buf) 154b00055aaSStefan Rompf { 155b00055aaSStefan Rompf const struct net_device *netdev = to_net_dev(dev); 156b00055aaSStefan Rompf unsigned char operstate; 157b00055aaSStefan Rompf 158b00055aaSStefan Rompf read_lock(&dev_base_lock); 159b00055aaSStefan Rompf operstate = netdev->operstate; 160b00055aaSStefan Rompf if (!netif_running(netdev)) 161b00055aaSStefan Rompf operstate = IF_OPER_DOWN; 162b00055aaSStefan Rompf read_unlock(&dev_base_lock); 163b00055aaSStefan Rompf 164e3a5cd9eSAdrian Bunk if (operstate >= ARRAY_SIZE(operstates)) 165b00055aaSStefan Rompf return -EINVAL; /* should not happen */ 166b00055aaSStefan Rompf 167b00055aaSStefan Rompf return sprintf(buf, "%s\n", operstates[operstate]); 168b00055aaSStefan Rompf } 169b00055aaSStefan Rompf 1701da177e4SLinus Torvalds /* read-write attributes */ 1711da177e4SLinus Torvalds NETDEVICE_SHOW(mtu, fmt_dec); 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvalds static int change_mtu(struct net_device *net, unsigned long new_mtu) 1741da177e4SLinus Torvalds { 1751da177e4SLinus Torvalds return dev_set_mtu(net, (int) new_mtu); 1761da177e4SLinus Torvalds } 1771da177e4SLinus Torvalds 17843cb76d9SGreg Kroah-Hartman static ssize_t store_mtu(struct device *dev, struct device_attribute *attr, 17943cb76d9SGreg Kroah-Hartman const char *buf, size_t len) 1801da177e4SLinus Torvalds { 18143cb76d9SGreg Kroah-Hartman return netdev_store(dev, attr, buf, len, change_mtu); 1821da177e4SLinus Torvalds } 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds NETDEVICE_SHOW(flags, fmt_hex); 1851da177e4SLinus Torvalds 1861da177e4SLinus Torvalds static int change_flags(struct net_device *net, unsigned long new_flags) 1871da177e4SLinus Torvalds { 1881da177e4SLinus Torvalds return dev_change_flags(net, (unsigned) new_flags); 1891da177e4SLinus Torvalds } 1901da177e4SLinus Torvalds 19143cb76d9SGreg Kroah-Hartman static ssize_t store_flags(struct device *dev, struct device_attribute *attr, 19243cb76d9SGreg Kroah-Hartman const char *buf, size_t len) 1931da177e4SLinus Torvalds { 19443cb76d9SGreg Kroah-Hartman return netdev_store(dev, attr, buf, len, change_flags); 1951da177e4SLinus Torvalds } 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds NETDEVICE_SHOW(tx_queue_len, fmt_ulong); 1981da177e4SLinus Torvalds 1991da177e4SLinus Torvalds static int change_tx_queue_len(struct net_device *net, unsigned long new_len) 2001da177e4SLinus Torvalds { 2011da177e4SLinus Torvalds net->tx_queue_len = new_len; 2021da177e4SLinus Torvalds return 0; 2031da177e4SLinus Torvalds } 2041da177e4SLinus Torvalds 20543cb76d9SGreg Kroah-Hartman static ssize_t store_tx_queue_len(struct device *dev, 20643cb76d9SGreg Kroah-Hartman struct device_attribute *attr, 20743cb76d9SGreg Kroah-Hartman const char *buf, size_t len) 2081da177e4SLinus Torvalds { 20943cb76d9SGreg Kroah-Hartman return netdev_store(dev, attr, buf, len, change_tx_queue_len); 2101da177e4SLinus Torvalds } 2111da177e4SLinus Torvalds 21243cb76d9SGreg Kroah-Hartman static struct device_attribute net_class_attributes[] = { 213fd586bacSKay Sievers __ATTR(addr_len, S_IRUGO, show_addr_len, NULL), 2149d29672cSDavid Woodhouse __ATTR(dev_id, S_IRUGO, show_dev_id, NULL), 215fd586bacSKay Sievers __ATTR(iflink, S_IRUGO, show_iflink, NULL), 216fd586bacSKay Sievers __ATTR(ifindex, S_IRUGO, show_ifindex, NULL), 217fd586bacSKay Sievers __ATTR(features, S_IRUGO, show_features, NULL), 218fd586bacSKay Sievers __ATTR(type, S_IRUGO, show_type, NULL), 219b00055aaSStefan Rompf __ATTR(link_mode, S_IRUGO, show_link_mode, NULL), 220fd586bacSKay Sievers __ATTR(address, S_IRUGO, show_address, NULL), 221fd586bacSKay Sievers __ATTR(broadcast, S_IRUGO, show_broadcast, NULL), 222fd586bacSKay Sievers __ATTR(carrier, S_IRUGO, show_carrier, NULL), 223b00055aaSStefan Rompf __ATTR(dormant, S_IRUGO, show_dormant, NULL), 224b00055aaSStefan Rompf __ATTR(operstate, S_IRUGO, show_operstate, NULL), 225fd586bacSKay Sievers __ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu), 226fd586bacSKay Sievers __ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags), 227fd586bacSKay Sievers __ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len, 228fd586bacSKay Sievers store_tx_queue_len), 229fd586bacSKay Sievers {} 2301da177e4SLinus Torvalds }; 2311da177e4SLinus Torvalds 2321da177e4SLinus Torvalds /* Show a given an attribute in the statistics group */ 23343cb76d9SGreg Kroah-Hartman static ssize_t netstat_show(const struct device *d, 23443cb76d9SGreg Kroah-Hartman struct device_attribute *attr, char *buf, 2351da177e4SLinus Torvalds unsigned long offset) 2361da177e4SLinus Torvalds { 23743cb76d9SGreg Kroah-Hartman struct net_device *dev = to_net_dev(d); 2381da177e4SLinus Torvalds struct net_device_stats *stats; 2391da177e4SLinus Torvalds ssize_t ret = -EINVAL; 2401da177e4SLinus Torvalds 241df1b86c5SPavel Emelyanov WARN_ON(offset > sizeof(struct net_device_stats) || 242df1b86c5SPavel Emelyanov offset % sizeof(unsigned long) != 0); 2431da177e4SLinus Torvalds 2441da177e4SLinus Torvalds read_lock(&dev_base_lock); 2451da177e4SLinus Torvalds if (dev_isalive(dev) && dev->get_stats && 2461da177e4SLinus Torvalds (stats = (*dev->get_stats)(dev))) 2471da177e4SLinus Torvalds ret = sprintf(buf, fmt_ulong, 2481da177e4SLinus Torvalds *(unsigned long *)(((u8 *) stats) + offset)); 2491da177e4SLinus Torvalds 2501da177e4SLinus Torvalds read_unlock(&dev_base_lock); 2511da177e4SLinus Torvalds return ret; 2521da177e4SLinus Torvalds } 2531da177e4SLinus Torvalds 2541da177e4SLinus Torvalds /* generate a read-only statistics attribute */ 2551da177e4SLinus Torvalds #define NETSTAT_ENTRY(name) \ 25643cb76d9SGreg Kroah-Hartman static ssize_t show_##name(struct device *d, \ 25743cb76d9SGreg Kroah-Hartman struct device_attribute *attr, char *buf) \ 2581da177e4SLinus Torvalds { \ 25943cb76d9SGreg Kroah-Hartman return netstat_show(d, attr, buf, \ 2601da177e4SLinus Torvalds offsetof(struct net_device_stats, name)); \ 2611da177e4SLinus Torvalds } \ 26243cb76d9SGreg Kroah-Hartman static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvalds NETSTAT_ENTRY(rx_packets); 2651da177e4SLinus Torvalds NETSTAT_ENTRY(tx_packets); 2661da177e4SLinus Torvalds NETSTAT_ENTRY(rx_bytes); 2671da177e4SLinus Torvalds NETSTAT_ENTRY(tx_bytes); 2681da177e4SLinus Torvalds NETSTAT_ENTRY(rx_errors); 2691da177e4SLinus Torvalds NETSTAT_ENTRY(tx_errors); 2701da177e4SLinus Torvalds NETSTAT_ENTRY(rx_dropped); 2711da177e4SLinus Torvalds NETSTAT_ENTRY(tx_dropped); 2721da177e4SLinus Torvalds NETSTAT_ENTRY(multicast); 2731da177e4SLinus Torvalds NETSTAT_ENTRY(collisions); 2741da177e4SLinus Torvalds NETSTAT_ENTRY(rx_length_errors); 2751da177e4SLinus Torvalds NETSTAT_ENTRY(rx_over_errors); 2761da177e4SLinus Torvalds NETSTAT_ENTRY(rx_crc_errors); 2771da177e4SLinus Torvalds NETSTAT_ENTRY(rx_frame_errors); 2781da177e4SLinus Torvalds NETSTAT_ENTRY(rx_fifo_errors); 2791da177e4SLinus Torvalds NETSTAT_ENTRY(rx_missed_errors); 2801da177e4SLinus Torvalds NETSTAT_ENTRY(tx_aborted_errors); 2811da177e4SLinus Torvalds NETSTAT_ENTRY(tx_carrier_errors); 2821da177e4SLinus Torvalds NETSTAT_ENTRY(tx_fifo_errors); 2831da177e4SLinus Torvalds NETSTAT_ENTRY(tx_heartbeat_errors); 2841da177e4SLinus Torvalds NETSTAT_ENTRY(tx_window_errors); 2851da177e4SLinus Torvalds NETSTAT_ENTRY(rx_compressed); 2861da177e4SLinus Torvalds NETSTAT_ENTRY(tx_compressed); 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvalds static struct attribute *netstat_attrs[] = { 28943cb76d9SGreg Kroah-Hartman &dev_attr_rx_packets.attr, 29043cb76d9SGreg Kroah-Hartman &dev_attr_tx_packets.attr, 29143cb76d9SGreg Kroah-Hartman &dev_attr_rx_bytes.attr, 29243cb76d9SGreg Kroah-Hartman &dev_attr_tx_bytes.attr, 29343cb76d9SGreg Kroah-Hartman &dev_attr_rx_errors.attr, 29443cb76d9SGreg Kroah-Hartman &dev_attr_tx_errors.attr, 29543cb76d9SGreg Kroah-Hartman &dev_attr_rx_dropped.attr, 29643cb76d9SGreg Kroah-Hartman &dev_attr_tx_dropped.attr, 29743cb76d9SGreg Kroah-Hartman &dev_attr_multicast.attr, 29843cb76d9SGreg Kroah-Hartman &dev_attr_collisions.attr, 29943cb76d9SGreg Kroah-Hartman &dev_attr_rx_length_errors.attr, 30043cb76d9SGreg Kroah-Hartman &dev_attr_rx_over_errors.attr, 30143cb76d9SGreg Kroah-Hartman &dev_attr_rx_crc_errors.attr, 30243cb76d9SGreg Kroah-Hartman &dev_attr_rx_frame_errors.attr, 30343cb76d9SGreg Kroah-Hartman &dev_attr_rx_fifo_errors.attr, 30443cb76d9SGreg Kroah-Hartman &dev_attr_rx_missed_errors.attr, 30543cb76d9SGreg Kroah-Hartman &dev_attr_tx_aborted_errors.attr, 30643cb76d9SGreg Kroah-Hartman &dev_attr_tx_carrier_errors.attr, 30743cb76d9SGreg Kroah-Hartman &dev_attr_tx_fifo_errors.attr, 30843cb76d9SGreg Kroah-Hartman &dev_attr_tx_heartbeat_errors.attr, 30943cb76d9SGreg Kroah-Hartman &dev_attr_tx_window_errors.attr, 31043cb76d9SGreg Kroah-Hartman &dev_attr_rx_compressed.attr, 31143cb76d9SGreg Kroah-Hartman &dev_attr_tx_compressed.attr, 3121da177e4SLinus Torvalds NULL 3131da177e4SLinus Torvalds }; 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds 3161da177e4SLinus Torvalds static struct attribute_group netstat_group = { 3171da177e4SLinus Torvalds .name = "statistics", 3181da177e4SLinus Torvalds .attrs = netstat_attrs, 3191da177e4SLinus Torvalds }; 3201da177e4SLinus Torvalds 3219d4a6040SRobert P. J. Day #ifdef CONFIG_WIRELESS_EXT 3221da177e4SLinus Torvalds /* helper function that does all the locking etc for wireless stats */ 32343cb76d9SGreg Kroah-Hartman static ssize_t wireless_show(struct device *d, char *buf, 3241da177e4SLinus Torvalds ssize_t (*format)(const struct iw_statistics *, 3251da177e4SLinus Torvalds char *)) 3261da177e4SLinus Torvalds { 32743cb76d9SGreg Kroah-Hartman struct net_device *dev = to_net_dev(d); 3286dd214b5SAndrey Borzenkov const struct iw_statistics *iw = NULL; 3291da177e4SLinus Torvalds ssize_t ret = -EINVAL; 3301da177e4SLinus Torvalds 3311da177e4SLinus Torvalds read_lock(&dev_base_lock); 3326dd214b5SAndrey Borzenkov if (dev_isalive(dev)) { 3336dd214b5SAndrey Borzenkov if (dev->wireless_handlers && 3346dd214b5SAndrey Borzenkov dev->wireless_handlers->get_wireless_stats) 3356dd214b5SAndrey Borzenkov iw = dev->wireless_handlers->get_wireless_stats(dev); 3366dd214b5SAndrey Borzenkov if (iw != NULL) 3371da177e4SLinus Torvalds ret = (*format)(iw, buf); 3386dd214b5SAndrey Borzenkov } 3391da177e4SLinus Torvalds read_unlock(&dev_base_lock); 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds return ret; 3421da177e4SLinus Torvalds } 3431da177e4SLinus Torvalds 3441da177e4SLinus Torvalds /* show function template for wireless fields */ 3451da177e4SLinus Torvalds #define WIRELESS_SHOW(name, field, format_string) \ 3461da177e4SLinus Torvalds static ssize_t format_iw_##name(const struct iw_statistics *iw, char *buf) \ 3471da177e4SLinus Torvalds { \ 3481da177e4SLinus Torvalds return sprintf(buf, format_string, iw->field); \ 3491da177e4SLinus Torvalds } \ 35043cb76d9SGreg Kroah-Hartman static ssize_t show_iw_##name(struct device *d, \ 35143cb76d9SGreg Kroah-Hartman struct device_attribute *attr, char *buf) \ 3521da177e4SLinus Torvalds { \ 35343cb76d9SGreg Kroah-Hartman return wireless_show(d, buf, format_iw_##name); \ 3541da177e4SLinus Torvalds } \ 35543cb76d9SGreg Kroah-Hartman static DEVICE_ATTR(name, S_IRUGO, show_iw_##name, NULL) 3561da177e4SLinus Torvalds 3571da177e4SLinus Torvalds WIRELESS_SHOW(status, status, fmt_hex); 3581da177e4SLinus Torvalds WIRELESS_SHOW(link, qual.qual, fmt_dec); 3591da177e4SLinus Torvalds WIRELESS_SHOW(level, qual.level, fmt_dec); 3601da177e4SLinus Torvalds WIRELESS_SHOW(noise, qual.noise, fmt_dec); 3611da177e4SLinus Torvalds WIRELESS_SHOW(nwid, discard.nwid, fmt_dec); 3621da177e4SLinus Torvalds WIRELESS_SHOW(crypt, discard.code, fmt_dec); 3631da177e4SLinus Torvalds WIRELESS_SHOW(fragment, discard.fragment, fmt_dec); 3641da177e4SLinus Torvalds WIRELESS_SHOW(misc, discard.misc, fmt_dec); 3651da177e4SLinus Torvalds WIRELESS_SHOW(retries, discard.retries, fmt_dec); 3661da177e4SLinus Torvalds WIRELESS_SHOW(beacon, miss.beacon, fmt_dec); 3671da177e4SLinus Torvalds 3681da177e4SLinus Torvalds static struct attribute *wireless_attrs[] = { 36943cb76d9SGreg Kroah-Hartman &dev_attr_status.attr, 37043cb76d9SGreg Kroah-Hartman &dev_attr_link.attr, 37143cb76d9SGreg Kroah-Hartman &dev_attr_level.attr, 37243cb76d9SGreg Kroah-Hartman &dev_attr_noise.attr, 37343cb76d9SGreg Kroah-Hartman &dev_attr_nwid.attr, 37443cb76d9SGreg Kroah-Hartman &dev_attr_crypt.attr, 37543cb76d9SGreg Kroah-Hartman &dev_attr_fragment.attr, 37643cb76d9SGreg Kroah-Hartman &dev_attr_retries.attr, 37743cb76d9SGreg Kroah-Hartman &dev_attr_misc.attr, 37843cb76d9SGreg Kroah-Hartman &dev_attr_beacon.attr, 3791da177e4SLinus Torvalds NULL 3801da177e4SLinus Torvalds }; 3811da177e4SLinus Torvalds 3821da177e4SLinus Torvalds static struct attribute_group wireless_group = { 3831da177e4SLinus Torvalds .name = "wireless", 3841da177e4SLinus Torvalds .attrs = wireless_attrs, 3851da177e4SLinus Torvalds }; 3861da177e4SLinus Torvalds #endif 3871da177e4SLinus Torvalds 3888b41d188SEric W. Biederman #endif /* CONFIG_SYSFS */ 3898b41d188SEric W. Biederman 3901da177e4SLinus Torvalds #ifdef CONFIG_HOTPLUG 3917eff2e7aSKay Sievers static int netdev_uevent(struct device *d, struct kobj_uevent_env *env) 3921da177e4SLinus Torvalds { 39343cb76d9SGreg Kroah-Hartman struct net_device *dev = to_net_dev(d); 3947eff2e7aSKay Sievers int retval; 3951da177e4SLinus Torvalds 396312c004dSKay Sievers /* pass interface to uevent. */ 3977eff2e7aSKay Sievers retval = add_uevent_var(env, "INTERFACE=%s", dev->name); 398bf62456eSEric Rannaud if (retval) 399bf62456eSEric Rannaud goto exit; 4001da177e4SLinus Torvalds 401ca2f37dbSJean Tourrilhes /* pass ifindex to uevent. 402ca2f37dbSJean Tourrilhes * ifindex is useful as it won't change (interface name may change) 403ca2f37dbSJean Tourrilhes * and is what RtNetlink uses natively. */ 4047eff2e7aSKay Sievers retval = add_uevent_var(env, "IFINDEX=%d", dev->ifindex); 405ca2f37dbSJean Tourrilhes 406bf62456eSEric Rannaud exit: 407bf62456eSEric Rannaud return retval; 4081da177e4SLinus Torvalds } 4091da177e4SLinus Torvalds #endif 4101da177e4SLinus Torvalds 4111da177e4SLinus Torvalds /* 4121da177e4SLinus Torvalds * netdev_release -- destroy and free a dead device. 41343cb76d9SGreg Kroah-Hartman * Called when last reference to device kobject is gone. 4141da177e4SLinus Torvalds */ 41543cb76d9SGreg Kroah-Hartman static void netdev_release(struct device *d) 4161da177e4SLinus Torvalds { 41743cb76d9SGreg Kroah-Hartman struct net_device *dev = to_net_dev(d); 4181da177e4SLinus Torvalds 4191da177e4SLinus Torvalds BUG_ON(dev->reg_state != NETREG_RELEASED); 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds kfree((char *)dev - dev->padded); 4221da177e4SLinus Torvalds } 4231da177e4SLinus Torvalds 4241da177e4SLinus Torvalds static struct class net_class = { 4251da177e4SLinus Torvalds .name = "net", 42643cb76d9SGreg Kroah-Hartman .dev_release = netdev_release, 4278b41d188SEric W. Biederman #ifdef CONFIG_SYSFS 42843cb76d9SGreg Kroah-Hartman .dev_attrs = net_class_attributes, 4298b41d188SEric W. Biederman #endif /* CONFIG_SYSFS */ 4301da177e4SLinus Torvalds #ifdef CONFIG_HOTPLUG 43143cb76d9SGreg Kroah-Hartman .dev_uevent = netdev_uevent, 4321da177e4SLinus Torvalds #endif 4331da177e4SLinus Torvalds }; 4341da177e4SLinus Torvalds 4359093bbb2SStephen Hemminger /* Delete sysfs entries but hold kobject reference until after all 4369093bbb2SStephen Hemminger * netdev references are gone. 4379093bbb2SStephen Hemminger */ 4388b41d188SEric W. Biederman void netdev_unregister_kobject(struct net_device * net) 4391da177e4SLinus Torvalds { 4409093bbb2SStephen Hemminger struct device *dev = &(net->dev); 4419093bbb2SStephen Hemminger 4429093bbb2SStephen Hemminger kobject_get(&dev->kobj); 4439093bbb2SStephen Hemminger device_del(dev); 4441da177e4SLinus Torvalds } 4451da177e4SLinus Torvalds 4461da177e4SLinus Torvalds /* Create sysfs entries for network device. */ 4478b41d188SEric W. Biederman int netdev_register_kobject(struct net_device *net) 4481da177e4SLinus Torvalds { 44943cb76d9SGreg Kroah-Hartman struct device *dev = &(net->dev); 450fe9925b5SStephen Hemminger struct attribute_group **groups = net->sysfs_groups; 4511da177e4SLinus Torvalds 45243cb76d9SGreg Kroah-Hartman dev->class = &net_class; 45343cb76d9SGreg Kroah-Hartman dev->platform_data = net; 45443cb76d9SGreg Kroah-Hartman dev->groups = groups; 4551da177e4SLinus Torvalds 456fe9925b5SStephen Hemminger BUILD_BUG_ON(BUS_ID_SIZE < IFNAMSIZ); 45743cb76d9SGreg Kroah-Hartman strlcpy(dev->bus_id, net->name, BUS_ID_SIZE); 4581da177e4SLinus Torvalds 4598b41d188SEric W. Biederman #ifdef CONFIG_SYSFS 460fe9925b5SStephen Hemminger if (net->get_stats) 461fe9925b5SStephen Hemminger *groups++ = &netstat_group; 4621da177e4SLinus Torvalds 4639d4a6040SRobert P. J. Day #ifdef CONFIG_WIRELESS_EXT 464baef1865SJohn W. Linville if (net->wireless_handlers && net->wireless_handlers->get_wireless_stats) 465fe9925b5SStephen Hemminger *groups++ = &wireless_group; 4661da177e4SLinus Torvalds #endif 4678b41d188SEric W. Biederman #endif /* CONFIG_SYSFS */ 4681da177e4SLinus Torvalds 46943cb76d9SGreg Kroah-Hartman return device_add(dev); 4701da177e4SLinus Torvalds } 4711da177e4SLinus Torvalds 472aaf8cdc3SDaniel Lezcano void netdev_initialize_kobject(struct net_device *net) 473aaf8cdc3SDaniel Lezcano { 474aaf8cdc3SDaniel Lezcano struct device *device = &(net->dev); 475aaf8cdc3SDaniel Lezcano device_initialize(device); 476aaf8cdc3SDaniel Lezcano } 477aaf8cdc3SDaniel Lezcano 4788b41d188SEric W. Biederman int netdev_kobject_init(void) 4791da177e4SLinus Torvalds { 4801da177e4SLinus Torvalds return class_register(&net_class); 4811da177e4SLinus Torvalds } 482