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Diffstat (limited to 'net/core/net-sysfs.c')
-rw-r--r--net/core/net-sysfs.c297
1 files changed, 189 insertions, 108 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 7427ab5e27d..1cac29ebb05 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -60,12 +60,19 @@ static ssize_t format_##field(const struct net_device *net, char *buf) \
{ \
return sprintf(buf, format_string, net->field); \
} \
-static ssize_t show_##field(struct device *dev, \
+static ssize_t field##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
return netdev_show(dev, attr, buf, format_##field); \
-}
+} \
+
+#define NETDEVICE_SHOW_RO(field, format_string) \
+NETDEVICE_SHOW(field, format_string); \
+static DEVICE_ATTR_RO(field)
+#define NETDEVICE_SHOW_RW(field, format_string) \
+NETDEVICE_SHOW(field, format_string); \
+static DEVICE_ATTR_RW(field)
/* use same locking and permission rules as SIF* ioctl's */
static ssize_t netdev_store(struct device *dev, struct device_attribute *attr,
@@ -96,16 +103,17 @@ static ssize_t netdev_store(struct device *dev, struct device_attribute *attr,
return ret;
}
-NETDEVICE_SHOW(dev_id, fmt_hex);
-NETDEVICE_SHOW(addr_assign_type, fmt_dec);
-NETDEVICE_SHOW(addr_len, fmt_dec);
-NETDEVICE_SHOW(iflink, fmt_dec);
-NETDEVICE_SHOW(ifindex, fmt_dec);
-NETDEVICE_SHOW(type, fmt_dec);
-NETDEVICE_SHOW(link_mode, fmt_dec);
+NETDEVICE_SHOW_RO(dev_id, fmt_hex);
+NETDEVICE_SHOW_RO(dev_port, fmt_dec);
+NETDEVICE_SHOW_RO(addr_assign_type, fmt_dec);
+NETDEVICE_SHOW_RO(addr_len, fmt_dec);
+NETDEVICE_SHOW_RO(iflink, fmt_dec);
+NETDEVICE_SHOW_RO(ifindex, fmt_dec);
+NETDEVICE_SHOW_RO(type, fmt_dec);
+NETDEVICE_SHOW_RO(link_mode, fmt_dec);
/* use same locking rules as GIFHWADDR ioctl's */
-static ssize_t show_address(struct device *dev, struct device_attribute *attr,
+static ssize_t address_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct net_device *net = to_net_dev(dev);
@@ -117,15 +125,17 @@ static ssize_t show_address(struct device *dev, struct device_attribute *attr,
read_unlock(&dev_base_lock);
return ret;
}
+static DEVICE_ATTR_RO(address);
-static ssize_t show_broadcast(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t broadcast_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct net_device *net = to_net_dev(dev);
if (dev_isalive(net))
return sysfs_format_mac(buf, net->broadcast, net->addr_len);
return -EINVAL;
}
+static DEVICE_ATTR_RO(broadcast);
static int change_carrier(struct net_device *net, unsigned long new_carrier)
{
@@ -134,13 +144,13 @@ static int change_carrier(struct net_device *net, unsigned long new_carrier)
return dev_change_carrier(net, (bool) new_carrier);
}
-static ssize_t store_carrier(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t len)
+static ssize_t carrier_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t len)
{
return netdev_store(dev, attr, buf, len, change_carrier);
}
-static ssize_t show_carrier(struct device *dev,
+static ssize_t carrier_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct net_device *netdev = to_net_dev(dev);
@@ -149,8 +159,9 @@ static ssize_t show_carrier(struct device *dev,
}
return -EINVAL;
}
+static DEVICE_ATTR_RW(carrier);
-static ssize_t show_speed(struct device *dev,
+static ssize_t speed_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct net_device *netdev = to_net_dev(dev);
@@ -167,8 +178,9 @@ static ssize_t show_speed(struct device *dev,
rtnl_unlock();
return ret;
}
+static DEVICE_ATTR_RO(speed);
-static ssize_t show_duplex(struct device *dev,
+static ssize_t duplex_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct net_device *netdev = to_net_dev(dev);
@@ -198,8 +210,9 @@ static ssize_t show_duplex(struct device *dev,
rtnl_unlock();
return ret;
}
+static DEVICE_ATTR_RO(duplex);
-static ssize_t show_dormant(struct device *dev,
+static ssize_t dormant_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct net_device *netdev = to_net_dev(dev);
@@ -209,6 +222,7 @@ static ssize_t show_dormant(struct device *dev,
return -EINVAL;
}
+static DEVICE_ATTR_RO(dormant);
static const char *const operstates[] = {
"unknown",
@@ -220,7 +234,7 @@ static const char *const operstates[] = {
"up"
};
-static ssize_t show_operstate(struct device *dev,
+static ssize_t operstate_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
const struct net_device *netdev = to_net_dev(dev);
@@ -237,35 +251,43 @@ static ssize_t show_operstate(struct device *dev,
return sprintf(buf, "%s\n", operstates[operstate]);
}
+static DEVICE_ATTR_RO(operstate);
+
+static ssize_t carrier_changes_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct net_device *netdev = to_net_dev(dev);
+ return sprintf(buf, fmt_dec,
+ atomic_read(&netdev->carrier_changes));
+}
+static DEVICE_ATTR_RO(carrier_changes);
/* read-write attributes */
-NETDEVICE_SHOW(mtu, fmt_dec);
static int change_mtu(struct net_device *net, unsigned long new_mtu)
{
return dev_set_mtu(net, (int) new_mtu);
}
-static ssize_t store_mtu(struct device *dev, struct device_attribute *attr,
+static ssize_t mtu_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t len)
{
return netdev_store(dev, attr, buf, len, change_mtu);
}
-
-NETDEVICE_SHOW(flags, fmt_hex);
+NETDEVICE_SHOW_RW(mtu, fmt_dec);
static int change_flags(struct net_device *net, unsigned long new_flags)
{
return dev_change_flags(net, (unsigned int) new_flags);
}
-static ssize_t store_flags(struct device *dev, struct device_attribute *attr,
+static ssize_t flags_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t len)
{
return netdev_store(dev, attr, buf, len, change_flags);
}
-
-NETDEVICE_SHOW(tx_queue_len, fmt_ulong);
+NETDEVICE_SHOW_RW(flags, fmt_hex);
static int change_tx_queue_len(struct net_device *net, unsigned long new_len)
{
@@ -273,7 +295,7 @@ static int change_tx_queue_len(struct net_device *net, unsigned long new_len)
return 0;
}
-static ssize_t store_tx_queue_len(struct device *dev,
+static ssize_t tx_queue_len_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
{
@@ -282,8 +304,9 @@ static ssize_t store_tx_queue_len(struct device *dev,
return netdev_store(dev, attr, buf, len, change_tx_queue_len);
}
+NETDEVICE_SHOW_RW(tx_queue_len, fmt_ulong);
-static ssize_t store_ifalias(struct device *dev, struct device_attribute *attr,
+static ssize_t ifalias_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t len)
{
struct net_device *netdev = to_net_dev(dev);
@@ -306,7 +329,7 @@ static ssize_t store_ifalias(struct device *dev, struct device_attribute *attr,
return ret < 0 ? ret : len;
}
-static ssize_t show_ifalias(struct device *dev,
+static ssize_t ifalias_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
const struct net_device *netdev = to_net_dev(dev);
@@ -319,8 +342,7 @@ static ssize_t show_ifalias(struct device *dev,
rtnl_unlock();
return ret;
}
-
-NETDEVICE_SHOW(group, fmt_dec);
+static DEVICE_ATTR_RW(ifalias);
static int change_group(struct net_device *net, unsigned long new_group)
{
@@ -328,35 +350,62 @@ static int change_group(struct net_device *net, unsigned long new_group)
return 0;
}
-static ssize_t store_group(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t len)
+static ssize_t group_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t len)
{
return netdev_store(dev, attr, buf, len, change_group);
}
+NETDEVICE_SHOW(group, fmt_dec);
+static DEVICE_ATTR(netdev_group, S_IRUGO | S_IWUSR, group_show, group_store);
+
+static ssize_t phys_port_id_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct net_device *netdev = to_net_dev(dev);
+ ssize_t ret = -EINVAL;
+
+ if (!rtnl_trylock())
+ return restart_syscall();
+
+ if (dev_isalive(netdev)) {
+ struct netdev_phys_port_id ppid;
+
+ ret = dev_get_phys_port_id(netdev, &ppid);
+ if (!ret)
+ ret = sprintf(buf, "%*phN\n", ppid.id_len, ppid.id);
+ }
+ rtnl_unlock();
-static struct device_attribute net_class_attributes[] = {
- __ATTR(addr_assign_type, S_IRUGO, show_addr_assign_type, NULL),
- __ATTR(addr_len, S_IRUGO, show_addr_len, NULL),
- __ATTR(dev_id, S_IRUGO, show_dev_id, NULL),
- __ATTR(ifalias, S_IRUGO | S_IWUSR, show_ifalias, store_ifalias),
- __ATTR(iflink, S_IRUGO, show_iflink, NULL),
- __ATTR(ifindex, S_IRUGO, show_ifindex, 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 | S_IWUSR, show_carrier, store_carrier),
- __ATTR(speed, S_IRUGO, show_speed, NULL),
- __ATTR(duplex, S_IRUGO, show_duplex, 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(netdev_group, S_IRUGO | S_IWUSR, show_group, store_group),
- {}
+ return ret;
+}
+static DEVICE_ATTR_RO(phys_port_id);
+
+static struct attribute *net_class_attrs[] = {
+ &dev_attr_netdev_group.attr,
+ &dev_attr_type.attr,
+ &dev_attr_dev_id.attr,
+ &dev_attr_dev_port.attr,
+ &dev_attr_iflink.attr,
+ &dev_attr_ifindex.attr,
+ &dev_attr_addr_assign_type.attr,
+ &dev_attr_addr_len.attr,
+ &dev_attr_link_mode.attr,
+ &dev_attr_address.attr,
+ &dev_attr_broadcast.attr,
+ &dev_attr_speed.attr,
+ &dev_attr_duplex.attr,
+ &dev_attr_dormant.attr,
+ &dev_attr_operstate.attr,
+ &dev_attr_carrier_changes.attr,
+ &dev_attr_ifalias.attr,
+ &dev_attr_carrier.attr,
+ &dev_attr_mtu.attr,
+ &dev_attr_flags.attr,
+ &dev_attr_tx_queue_len.attr,
+ &dev_attr_phys_port_id.attr,
+ NULL,
};
+ATTRIBUTE_GROUPS(net_class);
/* Show a given an attribute in the statistics group */
static ssize_t netstat_show(const struct device *d,
@@ -382,13 +431,13 @@ static ssize_t netstat_show(const struct device *d,
/* generate a read-only statistics attribute */
#define NETSTAT_ENTRY(name) \
-static ssize_t show_##name(struct device *d, \
+static ssize_t name##_show(struct device *d, \
struct device_attribute *attr, char *buf) \
{ \
return netstat_show(d, attr, buf, \
offsetof(struct rtnl_link_stats64, name)); \
} \
-static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
+static DEVICE_ATTR_RO(name)
NETSTAT_ENTRY(rx_packets);
NETSTAT_ENTRY(tx_packets);
@@ -457,19 +506,12 @@ static struct attribute_group wireless_group = {
.attrs = wireless_attrs,
};
#endif
+
+#else /* CONFIG_SYSFS */
+#define net_class_groups NULL
#endif /* CONFIG_SYSFS */
-#ifdef CONFIG_RPS
-/*
- * RX queue sysfs structures and functions.
- */
-struct rx_queue_attribute {
- struct attribute attr;
- ssize_t (*show)(struct netdev_rx_queue *queue,
- struct rx_queue_attribute *attr, char *buf);
- ssize_t (*store)(struct netdev_rx_queue *queue,
- struct rx_queue_attribute *attr, const char *buf, size_t len);
-};
+#ifdef CONFIG_SYSFS
#define to_rx_queue_attr(_attr) container_of(_attr, \
struct rx_queue_attribute, attr)
@@ -504,6 +546,7 @@ static const struct sysfs_ops rx_queue_sysfs_ops = {
.store = rx_queue_attr_store,
};
+#ifdef CONFIG_RPS
static ssize_t show_rps_map(struct netdev_rx_queue *queue,
struct rx_queue_attribute *attribute, char *buf)
{
@@ -606,21 +649,11 @@ static ssize_t show_rps_dev_flow_table_cnt(struct netdev_rx_queue *queue,
return sprintf(buf, "%lu\n", val);
}
-static void rps_dev_flow_table_release_work(struct work_struct *work)
-{
- struct rps_dev_flow_table *table = container_of(work,
- struct rps_dev_flow_table, free_work);
-
- vfree(table);
-}
-
static void rps_dev_flow_table_release(struct rcu_head *rcu)
{
struct rps_dev_flow_table *table = container_of(rcu,
struct rps_dev_flow_table, rcu);
-
- INIT_WORK(&table->free_work, rps_dev_flow_table_release_work);
- schedule_work(&table->free_work);
+ vfree(table);
}
static ssize_t store_rps_dev_flow_table_cnt(struct netdev_rx_queue *queue,
@@ -647,8 +680,8 @@ static ssize_t store_rps_dev_flow_table_cnt(struct netdev_rx_queue *queue,
while ((mask | (mask >> 1)) != mask)
mask |= (mask >> 1);
/* On 64 bit arches, must check mask fits in table->mask (u32),
- * and on 32bit arches, must check RPS_DEV_FLOW_TABLE_SIZE(mask + 1)
- * doesnt overflow.
+ * and on 32bit arches, must check
+ * RPS_DEV_FLOW_TABLE_SIZE(mask + 1) doesn't overflow.
*/
#if BITS_PER_LONG > 32
if (mask > (unsigned long)(u32)mask)
@@ -689,16 +722,20 @@ static struct rx_queue_attribute rps_cpus_attribute =
static struct rx_queue_attribute rps_dev_flow_table_cnt_attribute =
__ATTR(rps_flow_cnt, S_IRUGO | S_IWUSR,
show_rps_dev_flow_table_cnt, store_rps_dev_flow_table_cnt);
+#endif /* CONFIG_RPS */
static struct attribute *rx_queue_default_attrs[] = {
+#ifdef CONFIG_RPS
&rps_cpus_attribute.attr,
&rps_dev_flow_table_cnt_attribute.attr,
+#endif
NULL
};
static void rx_queue_release(struct kobject *kobj)
{
struct netdev_rx_queue *queue = to_rx_queue(kobj);
+#ifdef CONFIG_RPS
struct rps_map *map;
struct rps_dev_flow_table *flow_table;
@@ -714,15 +751,29 @@ static void rx_queue_release(struct kobject *kobj)
RCU_INIT_POINTER(queue->rps_flow_table, NULL);
call_rcu(&flow_table->rcu, rps_dev_flow_table_release);
}
+#endif
memset(kobj, 0, sizeof(*kobj));
dev_put(queue->dev);
}
+static const void *rx_queue_namespace(struct kobject *kobj)
+{
+ struct netdev_rx_queue *queue = to_rx_queue(kobj);
+ struct device *dev = &queue->dev->dev;
+ const void *ns = NULL;
+
+ if (dev->class && dev->class->ns_type)
+ ns = dev->class->namespace(dev);
+
+ return ns;
+}
+
static struct kobj_type rx_queue_ktype = {
.sysfs_ops = &rx_queue_sysfs_ops,
.release = rx_queue_release,
.default_attrs = rx_queue_default_attrs,
+ .namespace = rx_queue_namespace
};
static int rx_queue_add_kobject(struct net_device *net, int index)
@@ -734,25 +785,36 @@ static int rx_queue_add_kobject(struct net_device *net, int index)
kobj->kset = net->queues_kset;
error = kobject_init_and_add(kobj, &rx_queue_ktype, NULL,
"rx-%u", index);
- if (error) {
- kobject_put(kobj);
- return error;
+ if (error)
+ goto exit;
+
+ if (net->sysfs_rx_queue_group) {
+ error = sysfs_create_group(kobj, net->sysfs_rx_queue_group);
+ if (error)
+ goto exit;
}
kobject_uevent(kobj, KOBJ_ADD);
dev_hold(queue->dev);
return error;
+exit:
+ kobject_put(kobj);
+ return error;
}
-#endif /* CONFIG_RPS */
+#endif /* CONFIG_SYSFS */
int
net_rx_queue_update_kobjects(struct net_device *net, int old_num, int new_num)
{
-#ifdef CONFIG_RPS
+#ifdef CONFIG_SYSFS
int i;
int error = 0;
+#ifndef CONFIG_RPS
+ if (!net->sysfs_rx_queue_group)
+ return 0;
+#endif
for (i = old_num; i < new_num; i++) {
error = rx_queue_add_kobject(net, i);
if (error) {
@@ -761,8 +823,12 @@ net_rx_queue_update_kobjects(struct net_device *net, int old_num, int new_num)
}
}
- while (--i >= new_num)
+ while (--i >= new_num) {
+ if (net->sysfs_rx_queue_group)
+ sysfs_remove_group(&net->_rx[i].kobj,
+ net->sysfs_rx_queue_group);
kobject_put(&net->_rx[i].kobj);
+ }
return error;
#else
@@ -943,15 +1009,12 @@ static struct attribute_group dql_group = {
#endif /* CONFIG_BQL */
#ifdef CONFIG_XPS
-static inline unsigned int get_netdev_queue_index(struct netdev_queue *queue)
+static unsigned int get_netdev_queue_index(struct netdev_queue *queue)
{
struct net_device *dev = queue->dev;
- int i;
-
- for (i = 0; i < dev->num_tx_queues; i++)
- if (queue == &dev->_tx[i])
- break;
+ unsigned int i;
+ i = queue - dev->_tx;
BUG_ON(i >= dev->num_tx_queues);
return i;
@@ -1053,10 +1116,23 @@ static void netdev_queue_release(struct kobject *kobj)
dev_put(queue->dev);
}
+static const void *netdev_queue_namespace(struct kobject *kobj)
+{
+ struct netdev_queue *queue = to_netdev_queue(kobj);
+ struct device *dev = &queue->dev->dev;
+ const void *ns = NULL;
+
+ if (dev->class && dev->class->ns_type)
+ ns = dev->class->namespace(dev);
+
+ return ns;
+}
+
static struct kobj_type netdev_queue_ktype = {
.sysfs_ops = &netdev_queue_sysfs_ops,
.release = netdev_queue_release,
.default_attrs = netdev_queue_default_attrs,
+ .namespace = netdev_queue_namespace,
};
static int netdev_queue_add_kobject(struct net_device *net, int index)
@@ -1126,9 +1202,6 @@ static int register_queue_kobjects(struct net_device *net)
NULL, &net->dev.kobj);
if (!net->queues_kset)
return -ENOMEM;
-#endif
-
-#ifdef CONFIG_RPS
real_rx = net->real_num_rx_queues;
#endif
real_tx = net->real_num_tx_queues;
@@ -1155,7 +1228,7 @@ static void remove_queue_kobjects(struct net_device *net)
{
int real_rx = 0, real_tx = 0;
-#ifdef CONFIG_RPS
+#ifdef CONFIG_SYSFS
real_rx = net->real_num_rx_queues;
#endif
real_tx = net->real_num_tx_queues;
@@ -1167,6 +1240,13 @@ static void remove_queue_kobjects(struct net_device *net)
#endif
}
+static bool net_current_may_mount(void)
+{
+ struct net *net = current->nsproxy->net_ns;
+
+ return ns_capable(net->user_ns, CAP_SYS_ADMIN);
+}
+
static void *net_grab_current_ns(void)
{
struct net *ns = current->nsproxy->net_ns;
@@ -1189,6 +1269,7 @@ static const void *net_netlink_ns(struct sock *sk)
struct kobj_ns_type_operations net_ns_type_operations = {
.type = KOBJ_NS_TYPE_NET,
+ .current_may_mount = net_current_may_mount,
.grab_current_ns = net_grab_current_ns,
.netlink_ns = net_netlink_ns,
.initial_ns = net_initial_ns,
@@ -1226,7 +1307,7 @@ static void netdev_release(struct device *d)
BUG_ON(dev->reg_state != NETREG_RELEASED);
kfree(dev->ifalias);
- kfree((char *)dev - dev->padded);
+ netdev_freemem(dev);
}
static const void *net_namespace(struct device *d)
@@ -1239,9 +1320,7 @@ static const void *net_namespace(struct device *d)
static struct class net_class = {
.name = "net",
.dev_release = netdev_release,
-#ifdef CONFIG_SYSFS
- .dev_attrs = net_class_attributes,
-#endif /* CONFIG_SYSFS */
+ .dev_groups = net_class_groups,
.dev_uevent = netdev_uevent,
.ns_type = &net_ns_type_operations,
.namespace = net_namespace,
@@ -1309,19 +1388,21 @@ int netdev_register_kobject(struct net_device *net)
return error;
}
-int netdev_class_create_file(struct class_attribute *class_attr)
+int netdev_class_create_file_ns(struct class_attribute *class_attr,
+ const void *ns)
{
- return class_create_file(&net_class, class_attr);
+ return class_create_file_ns(&net_class, class_attr, ns);
}
-EXPORT_SYMBOL(netdev_class_create_file);
+EXPORT_SYMBOL(netdev_class_create_file_ns);
-void netdev_class_remove_file(struct class_attribute *class_attr)
+void netdev_class_remove_file_ns(struct class_attribute *class_attr,
+ const void *ns)
{
- class_remove_file(&net_class, class_attr);
+ class_remove_file_ns(&net_class, class_attr, ns);
}
-EXPORT_SYMBOL(netdev_class_remove_file);
+EXPORT_SYMBOL(netdev_class_remove_file_ns);
-int netdev_kobject_init(void)
+int __init netdev_kobject_init(void)
{
kobj_ns_type_register(&net_ns_type_operations);
return class_register(&net_class);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 05:38:20 +0000