1 files changed, 39 insertions, 0 deletions

diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index eeab40b01b7a..c29b836749b6 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -1699,6 +1699,44 @@ out:
 static DEVICE_ATTR(resend_igmp, S_IRUGO | S_IWUSR,
                    bonding_show_resend_igmp, bonding_store_resend_igmp);
 
+
+static ssize_t bonding_show_lp_interval(struct device *d,
+                                        struct device_attribute *attr,
+                                        char *buf)
+{
+        struct bonding *bond = to_bond(d);
+        return sprintf(buf, "%d\n", bond->params.lp_interval);
+}
+
+static ssize_t bonding_store_lp_interval(struct device *d,
+                                         struct device_attribute *attr,
+                                         const char *buf, size_t count)
+{
+        struct bonding *bond = to_bond(d);
+        int new_value, ret = count;
+
+        if (sscanf(buf, "%d", &new_value) != 1) {
+                pr_err("%s: no lp interval value specified.\n",
+                        bond->dev->name);
+                ret = -EINVAL;
+                goto out;
+        }
+
+        if (new_value <= 0) {
+                pr_err ("%s: lp_interval must be between 1 and %d\n",
+                        bond->dev->name, INT_MAX);
+                ret = -EINVAL;
+                goto out;
+        }
+
+        bond->params.lp_interval = new_value;
+out:
+        return ret;
+}
+
+static DEVICE_ATTR(lp_interval, S_IRUGO | S_IWUSR,
+                   bonding_show_lp_interval, bonding_store_lp_interval);
+
 static struct attribute *per_bond_attrs[] = {
         &dev_attr_slaves.attr,
         &dev_attr_mode.attr,
@@ -1729,6 +1767,7 @@ static struct attribute *per_bond_attrs[] = {
         &dev_attr_all_slaves_active.attr,
         &dev_attr_resend_igmp.attr,
         &dev_attr_min_links.attr,
+        &dev_attr_lp_interval.attr,
         NULL,
 };