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Diffstat (limited to 'net/bridge/br_sysfs_br.c')
-rw-r--r--net/bridge/br_sysfs_br.c26
1 files changed, 18 insertions, 8 deletions
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 27d6a511c8c..158dee8b496 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -29,11 +29,12 @@
*/
static ssize_t store_bridge_parm(struct device *d,
const char *buf, size_t len,
- void (*set)(struct net_bridge *, unsigned long))
+ int (*set)(struct net_bridge *, unsigned long))
{
struct net_bridge *br = to_bridge(d);
char *endp;
unsigned long val;
+ int err;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
@@ -43,9 +44,9 @@ static ssize_t store_bridge_parm(struct device *d,
return -EINVAL;
spin_lock_bh(&br->lock);
- (*set)(br, val);
+ err = (*set)(br, val);
spin_unlock_bh(&br->lock);
- return len;
+ return err ? err : len;
}
@@ -56,12 +57,13 @@ static ssize_t show_forward_delay(struct device *d,
return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->forward_delay));
}
-static void set_forward_delay(struct net_bridge *br, unsigned long val)
+static int set_forward_delay(struct net_bridge *br, unsigned long val)
{
unsigned long delay = clock_t_to_jiffies(val);
br->forward_delay = delay;
if (br_is_root_bridge(br))
br->bridge_forward_delay = delay;
+ return 0;
}
static ssize_t store_forward_delay(struct device *d,
@@ -80,12 +82,17 @@ static ssize_t show_hello_time(struct device *d, struct device_attribute *attr,
jiffies_to_clock_t(to_bridge(d)->hello_time));
}
-static void set_hello_time(struct net_bridge *br, unsigned long val)
+static int set_hello_time(struct net_bridge *br, unsigned long val)
{
unsigned long t = clock_t_to_jiffies(val);
+
+ if (t < HZ)
+ return -EINVAL;
+
br->hello_time = t;
if (br_is_root_bridge(br))
br->bridge_hello_time = t;
+ return 0;
}
static ssize_t store_hello_time(struct device *d,
@@ -104,12 +111,13 @@ static ssize_t show_max_age(struct device *d, struct device_attribute *attr,
jiffies_to_clock_t(to_bridge(d)->max_age));
}
-static void set_max_age(struct net_bridge *br, unsigned long val)
+static int set_max_age(struct net_bridge *br, unsigned long val)
{
unsigned long t = clock_t_to_jiffies(val);
br->max_age = t;
if (br_is_root_bridge(br))
br->bridge_max_age = t;
+ return 0;
}
static ssize_t store_max_age(struct device *d, struct device_attribute *attr,
@@ -126,9 +134,10 @@ static ssize_t show_ageing_time(struct device *d,
return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->ageing_time));
}
-static void set_ageing_time(struct net_bridge *br, unsigned long val)
+static int set_ageing_time(struct net_bridge *br, unsigned long val)
{
br->ageing_time = clock_t_to_jiffies(val);
+ return 0;
}
static ssize_t store_ageing_time(struct device *d,
@@ -180,9 +189,10 @@ static ssize_t show_priority(struct device *d, struct device_attribute *attr,
(br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]);
}
-static void set_priority(struct net_bridge *br, unsigned long val)
+static int set_priority(struct net_bridge *br, unsigned long val)
{
br_stp_set_bridge_priority(br, (u16) val);
+ return 0;
}
static ssize_t store_priority(struct device *d, struct device_attribute *attr,