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Diffstat (limited to 'net/core/net-sysfs.c')
-rw-r--r--net/core/net-sysfs.c82
1 files changed, 58 insertions, 24 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index f3edf9635e0..93886246a0b 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -498,17 +498,7 @@ static struct attribute_group wireless_group = {
#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)
@@ -543,6 +533,7 @@ 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)
{
@@ -676,8 +667,8 @@ 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)
@@ -718,16 +709,20 @@ 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;
@@ -743,15 +738,29 @@ 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)
@@ -763,25 +772,36 @@ 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_SYFS */
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) {
@@ -790,8 +810,12 @@ 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
@@ -1082,10 +1106,23 @@ 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)
@@ -1155,9 +1192,6 @@ 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;
@@ -1184,7 +1218,7 @@ 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;
@@ -1358,7 +1392,7 @@ void netdev_class_remove_file_ns(struct class_attribute *class_attr,
}
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);