* net-sysfs.c - network device class and attributes
*
* Copyright (c) 2003 Stephen Hemminger <shemminger@osdl.org>
- *
+ *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
-#include <linux/config.h>
+#include <linux/capability.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/wireless.h>
#include <net/iw_handler.h>
-#define to_class_dev(obj) container_of(obj,struct class_device,kobj)
-#define to_net_dev(class) container_of(class, struct net_device, class_dev)
-
+#ifdef CONFIG_SYSFS
static const char fmt_hex[] = "%#x\n";
static const char fmt_long_hex[] = "%#lx\n";
static const char fmt_dec[] = "%d\n";
static const char fmt_ulong[] = "%lu\n";
-static inline int dev_isalive(const struct net_device *dev)
+static inline int dev_isalive(const struct net_device *dev)
{
- return dev->reg_state == NETREG_REGISTERED;
+ return dev->reg_state <= NETREG_REGISTERED;
}
/* use same locking rules as GIF* ioctl's */
-static ssize_t netdev_show(const struct class_device *cd, char *buf,
+static ssize_t netdev_show(const struct device *dev,
+ struct device_attribute *attr, char *buf,
ssize_t (*format)(const struct net_device *, char *))
{
- struct net_device *net = to_net_dev(cd);
+ struct net_device *net = to_net_dev(dev);
ssize_t ret = -EINVAL;
read_lock(&dev_base_lock);
{ \
return sprintf(buf, format_string, net->field); \
} \
-static ssize_t show_##field(struct class_device *cd, char *buf) \
+static ssize_t show_##field(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
{ \
- return netdev_show(cd, buf, format_##field); \
+ return netdev_show(dev, attr, buf, format_##field); \
}
/* use same locking and permission rules as SIF* ioctl's */
-static ssize_t netdev_store(struct class_device *dev,
+static ssize_t netdev_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t len,
int (*set)(struct net_device *, unsigned long))
{
NETDEVICE_SHOW(ifindex, fmt_dec);
NETDEVICE_SHOW(features, fmt_long_hex);
NETDEVICE_SHOW(type, fmt_dec);
+NETDEVICE_SHOW(link_mode, fmt_dec);
/* use same locking rules as GIFHWADDR ioctl's */
static ssize_t format_addr(char *buf, const unsigned char *addr, int len)
return cp - buf;
}
-static ssize_t show_address(struct class_device *dev, char *buf)
+static ssize_t show_address(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
struct net_device *net = to_net_dev(dev);
ssize_t ret = -EINVAL;
return ret;
}
-static ssize_t show_broadcast(struct class_device *dev, char *buf)
+static ssize_t show_broadcast(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct net_device *net = to_net_dev(dev);
if (dev_isalive(net))
return -EINVAL;
}
-static ssize_t show_carrier(struct class_device *dev, char *buf)
+static ssize_t show_carrier(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct net_device *netdev = to_net_dev(dev);
if (netif_running(netdev)) {
return -EINVAL;
}
+static ssize_t show_dormant(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct net_device *netdev = to_net_dev(dev);
+
+ if (netif_running(netdev))
+ return sprintf(buf, fmt_dec, !!netif_dormant(netdev));
+
+ return -EINVAL;
+}
+
+static const char *operstates[] = {
+ "unknown",
+ "notpresent", /* currently unused */
+ "down",
+ "lowerlayerdown",
+ "testing", /* currently unused */
+ "dormant",
+ "up"
+};
+
+static ssize_t show_operstate(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ const struct net_device *netdev = to_net_dev(dev);
+ unsigned char operstate;
+
+ read_lock(&dev_base_lock);
+ operstate = netdev->operstate;
+ if (!netif_running(netdev))
+ operstate = IF_OPER_DOWN;
+ read_unlock(&dev_base_lock);
+
+ if (operstate >= ARRAY_SIZE(operstates))
+ return -EINVAL; /* should not happen */
+
+ return sprintf(buf, "%s\n", operstates[operstate]);
+}
+
/* read-write attributes */
NETDEVICE_SHOW(mtu, fmt_dec);
return dev_set_mtu(net, (int) new_mtu);
}
-static ssize_t store_mtu(struct class_device *dev, const char *buf, size_t len)
+static ssize_t store_mtu(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t len)
{
- return netdev_store(dev, buf, len, change_mtu);
+ return netdev_store(dev, attr, buf, len, change_mtu);
}
NETDEVICE_SHOW(flags, fmt_hex);
return dev_change_flags(net, (unsigned) new_flags);
}
-static ssize_t store_flags(struct class_device *dev, const char *buf, size_t len)
+static ssize_t store_flags(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t len)
{
- return netdev_store(dev, buf, len, change_flags);
+ return netdev_store(dev, attr, buf, len, change_flags);
}
NETDEVICE_SHOW(tx_queue_len, fmt_ulong);
return 0;
}
-static ssize_t store_tx_queue_len(struct class_device *dev, const char *buf, size_t len)
-{
- return netdev_store(dev, buf, len, change_tx_queue_len);
-}
-
-NETDEVICE_SHOW(weight, fmt_dec);
-
-static int change_weight(struct net_device *net, unsigned long new_weight)
-{
- net->weight = new_weight;
- return 0;
-}
-
-static ssize_t store_weight(struct class_device *dev, const char *buf, size_t len)
+static ssize_t store_tx_queue_len(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
{
- return netdev_store(dev, buf, len, change_weight);
+ return netdev_store(dev, attr, buf, len, change_tx_queue_len);
}
-static struct class_device_attribute net_class_attributes[] = {
+static struct device_attribute net_class_attributes[] = {
__ATTR(addr_len, S_IRUGO, show_addr_len, NULL),
__ATTR(iflink, S_IRUGO, show_iflink, NULL),
__ATTR(ifindex, S_IRUGO, show_ifindex, NULL),
__ATTR(features, S_IRUGO, show_features, NULL),
__ATTR(type, S_IRUGO, show_type, NULL),
+ __ATTR(link_mode, S_IRUGO, show_link_mode, NULL),
__ATTR(address, S_IRUGO, show_address, NULL),
__ATTR(broadcast, S_IRUGO, show_broadcast, NULL),
__ATTR(carrier, S_IRUGO, show_carrier, NULL),
+ __ATTR(dormant, S_IRUGO, show_dormant, NULL),
+ __ATTR(operstate, S_IRUGO, show_operstate, NULL),
__ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu),
__ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags),
__ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len,
store_tx_queue_len),
- __ATTR(weight, S_IRUGO | S_IWUSR, show_weight, store_weight),
{}
};
/* Show a given an attribute in the statistics group */
-static ssize_t netstat_show(const struct class_device *cd, char *buf,
+static ssize_t netstat_show(const struct device *d,
+ struct device_attribute *attr, char *buf,
unsigned long offset)
{
- struct net_device *dev = to_net_dev(cd);
+ struct net_device *dev = to_net_dev(d);
struct net_device_stats *stats;
ssize_t ret = -EINVAL;
read_lock(&dev_base_lock);
if (dev_isalive(dev) && dev->get_stats &&
- (stats = (*dev->get_stats)(dev)))
+ (stats = (*dev->get_stats)(dev)))
ret = sprintf(buf, fmt_ulong,
*(unsigned long *)(((u8 *) stats) + offset));
/* generate a read-only statistics attribute */
#define NETSTAT_ENTRY(name) \
-static ssize_t show_##name(struct class_device *cd, char *buf) \
+static ssize_t show_##name(struct device *d, \
+ struct device_attribute *attr, char *buf) \
{ \
- return netstat_show(cd, buf, \
+ return netstat_show(d, attr, buf, \
offsetof(struct net_device_stats, name)); \
} \
-static CLASS_DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
+static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
NETSTAT_ENTRY(rx_packets);
NETSTAT_ENTRY(tx_packets);
NETSTAT_ENTRY(tx_compressed);
static struct attribute *netstat_attrs[] = {
- &class_device_attr_rx_packets.attr,
- &class_device_attr_tx_packets.attr,
- &class_device_attr_rx_bytes.attr,
- &class_device_attr_tx_bytes.attr,
- &class_device_attr_rx_errors.attr,
- &class_device_attr_tx_errors.attr,
- &class_device_attr_rx_dropped.attr,
- &class_device_attr_tx_dropped.attr,
- &class_device_attr_multicast.attr,
- &class_device_attr_collisions.attr,
- &class_device_attr_rx_length_errors.attr,
- &class_device_attr_rx_over_errors.attr,
- &class_device_attr_rx_crc_errors.attr,
- &class_device_attr_rx_frame_errors.attr,
- &class_device_attr_rx_fifo_errors.attr,
- &class_device_attr_rx_missed_errors.attr,
- &class_device_attr_tx_aborted_errors.attr,
- &class_device_attr_tx_carrier_errors.attr,
- &class_device_attr_tx_fifo_errors.attr,
- &class_device_attr_tx_heartbeat_errors.attr,
- &class_device_attr_tx_window_errors.attr,
- &class_device_attr_rx_compressed.attr,
- &class_device_attr_tx_compressed.attr,
+ &dev_attr_rx_packets.attr,
+ &dev_attr_tx_packets.attr,
+ &dev_attr_rx_bytes.attr,
+ &dev_attr_tx_bytes.attr,
+ &dev_attr_rx_errors.attr,
+ &dev_attr_tx_errors.attr,
+ &dev_attr_rx_dropped.attr,
+ &dev_attr_tx_dropped.attr,
+ &dev_attr_multicast.attr,
+ &dev_attr_collisions.attr,
+ &dev_attr_rx_length_errors.attr,
+ &dev_attr_rx_over_errors.attr,
+ &dev_attr_rx_crc_errors.attr,
+ &dev_attr_rx_frame_errors.attr,
+ &dev_attr_rx_fifo_errors.attr,
+ &dev_attr_rx_missed_errors.attr,
+ &dev_attr_tx_aborted_errors.attr,
+ &dev_attr_tx_carrier_errors.attr,
+ &dev_attr_tx_fifo_errors.attr,
+ &dev_attr_tx_heartbeat_errors.attr,
+ &dev_attr_tx_window_errors.attr,
+ &dev_attr_rx_compressed.attr,
+ &dev_attr_tx_compressed.attr,
NULL
};
.attrs = netstat_attrs,
};
-#ifdef WIRELESS_EXT
+#ifdef CONFIG_WIRELESS_EXT
/* helper function that does all the locking etc for wireless stats */
-static ssize_t wireless_show(struct class_device *cd, char *buf,
+static ssize_t wireless_show(struct device *d, char *buf,
ssize_t (*format)(const struct iw_statistics *,
char *))
{
- struct net_device *dev = to_net_dev(cd);
+ struct net_device *dev = to_net_dev(d);
const struct iw_statistics *iw = NULL;
ssize_t ret = -EINVAL;
-
+
read_lock(&dev_base_lock);
if (dev_isalive(dev)) {
- if(dev->wireless_handlers &&
- dev->wireless_handlers->get_wireless_stats)
+ if (dev->wireless_handlers &&
+ dev->wireless_handlers->get_wireless_stats)
iw = dev->wireless_handlers->get_wireless_stats(dev);
- else if (dev->get_wireless_stats)
- iw = dev->get_wireless_stats(dev);
if (iw != NULL)
ret = (*format)(iw, buf);
}
{ \
return sprintf(buf, format_string, iw->field); \
} \
-static ssize_t show_iw_##name(struct class_device *cd, char *buf) \
+static ssize_t show_iw_##name(struct device *d, \
+ struct device_attribute *attr, char *buf) \
{ \
- return wireless_show(cd, buf, format_iw_##name); \
+ return wireless_show(d, buf, format_iw_##name); \
} \
-static CLASS_DEVICE_ATTR(name, S_IRUGO, show_iw_##name, NULL)
+static DEVICE_ATTR(name, S_IRUGO, show_iw_##name, NULL)
WIRELESS_SHOW(status, status, fmt_hex);
WIRELESS_SHOW(link, qual.qual, fmt_dec);
WIRELESS_SHOW(beacon, miss.beacon, fmt_dec);
static struct attribute *wireless_attrs[] = {
- &class_device_attr_status.attr,
- &class_device_attr_link.attr,
- &class_device_attr_level.attr,
- &class_device_attr_noise.attr,
- &class_device_attr_nwid.attr,
- &class_device_attr_crypt.attr,
- &class_device_attr_fragment.attr,
- &class_device_attr_retries.attr,
- &class_device_attr_misc.attr,
- &class_device_attr_beacon.attr,
+ &dev_attr_status.attr,
+ &dev_attr_link.attr,
+ &dev_attr_level.attr,
+ &dev_attr_noise.attr,
+ &dev_attr_nwid.attr,
+ &dev_attr_crypt.attr,
+ &dev_attr_fragment.attr,
+ &dev_attr_retries.attr,
+ &dev_attr_misc.attr,
+ &dev_attr_beacon.attr,
NULL
};
};
#endif
+#endif /* CONFIG_SYSFS */
+
#ifdef CONFIG_HOTPLUG
-static int netdev_uevent(struct class_device *cd, char **envp,
- int num_envp, char *buf, int size)
+static int netdev_uevent(struct device *d, struct kobj_uevent_env *env)
{
- struct net_device *dev = to_net_dev(cd);
- int i = 0;
- int n;
+ struct net_device *dev = to_net_dev(d);
+ int retval;
/* pass interface to uevent. */
- envp[i++] = buf;
- n = snprintf(buf, size, "INTERFACE=%s", dev->name) + 1;
- buf += n;
- size -= n;
+ retval = add_uevent_var(env, "INTERFACE=%s", dev->name);
+ if (retval)
+ goto exit;
- if ((size <= 0) || (i >= num_envp))
- return -ENOMEM;
+ /* pass ifindex to uevent.
+ * ifindex is useful as it won't change (interface name may change)
+ * and is what RtNetlink uses natively. */
+ retval = add_uevent_var(env, "IFINDEX=%d", dev->ifindex);
- envp[i] = NULL;
- return 0;
+exit:
+ return retval;
}
#endif
/*
- * netdev_release -- destroy and free a dead device.
- * Called when last reference to class_device kobject is gone.
+ * netdev_release -- destroy and free a dead device.
+ * Called when last reference to device kobject is gone.
*/
-static void netdev_release(struct class_device *cd)
+static void netdev_release(struct device *d)
{
- struct net_device *dev
- = container_of(cd, struct net_device, class_dev);
+ struct net_device *dev = to_net_dev(d);
BUG_ON(dev->reg_state != NETREG_RELEASED);
static struct class net_class = {
.name = "net",
- .release = netdev_release,
- .class_dev_attrs = net_class_attributes,
+ .dev_release = netdev_release,
+#ifdef CONFIG_SYSFS
+ .dev_attrs = net_class_attributes,
+#endif /* CONFIG_SYSFS */
#ifdef CONFIG_HOTPLUG
- .uevent = netdev_uevent,
+ .dev_uevent = netdev_uevent,
#endif
};
-void netdev_unregister_sysfs(struct net_device * net)
+/* Delete sysfs entries but hold kobject reference until after all
+ * netdev references are gone.
+ */
+void netdev_unregister_kobject(struct net_device * net)
{
- struct class_device * class_dev = &(net->class_dev);
-
- if (net->get_stats)
- sysfs_remove_group(&class_dev->kobj, &netstat_group);
-
-#ifdef WIRELESS_EXT
- if (net->get_wireless_stats || (net->wireless_handlers &&
- net->wireless_handlers->get_wireless_stats))
- sysfs_remove_group(&class_dev->kobj, &wireless_group);
-#endif
- class_device_del(class_dev);
+ struct device *dev = &(net->dev);
+ kobject_get(&dev->kobj);
+ device_del(dev);
}
/* Create sysfs entries for network device. */
-int netdev_register_sysfs(struct net_device *net)
+int netdev_register_kobject(struct net_device *net)
{
- struct class_device *class_dev = &(net->class_dev);
- int ret;
-
- class_dev->class = &net_class;
- class_dev->class_data = net;
-
- strlcpy(class_dev->class_id, net->name, BUS_ID_SIZE);
- if ((ret = class_device_register(class_dev)))
- goto out;
-
- if (net->get_stats &&
- (ret = sysfs_create_group(&class_dev->kobj, &netstat_group)))
- goto out_unreg;
-
-#ifdef WIRELESS_EXT
- if (net->get_wireless_stats || (net->wireless_handlers &&
- net->wireless_handlers->get_wireless_stats)) {
- ret = sysfs_create_group(&class_dev->kobj, &wireless_group);
- if (ret)
- goto out_cleanup;
- }
- return 0;
-out_cleanup:
+ struct device *dev = &(net->dev);
+ struct attribute_group **groups = net->sysfs_groups;
+
+ device_initialize(dev);
+ dev->class = &net_class;
+ dev->platform_data = net;
+ dev->groups = groups;
+
+ BUILD_BUG_ON(BUS_ID_SIZE < IFNAMSIZ);
+ strlcpy(dev->bus_id, net->name, BUS_ID_SIZE);
+
+#ifdef CONFIG_SYSFS
if (net->get_stats)
- sysfs_remove_group(&class_dev->kobj, &netstat_group);
-#else
- return 0;
+ *groups++ = &netstat_group;
+
+#ifdef CONFIG_WIRELESS_EXT
+ if (net->wireless_handlers && net->wireless_handlers->get_wireless_stats)
+ *groups++ = &wireless_group;
#endif
+#endif /* CONFIG_SYSFS */
-out_unreg:
- printk(KERN_WARNING "%s: sysfs attribute registration failed %d\n",
- net->name, ret);
- class_device_unregister(class_dev);
-out:
- return ret;
+ return device_add(dev);
}
-int netdev_sysfs_init(void)
+int netdev_kobject_init(void)
{
return class_register(&net_class);
}