bonding: add use_carrier netlink support
Add IFLA_BOND_USE_CARRIER to allow get/set of bonding parameter
use_carrier via netlink.
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index bec20bc..114760a 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -1097,25 +1097,23 @@
struct device_attribute *attr,
const char *buf, size_t count)
{
- int new_value, ret = count;
+ int new_value, ret;
struct bonding *bond = to_bond(d);
-
if (sscanf(buf, "%d", &new_value) != 1) {
pr_err("%s: no use_carrier value specified.\n",
bond->dev->name);
- ret = -EINVAL;
- goto out;
+ return -EINVAL;
}
- if ((new_value == 0) || (new_value == 1)) {
- bond->params.use_carrier = new_value;
- pr_info("%s: Setting use_carrier to %d.\n",
- bond->dev->name, new_value);
- } else {
- pr_info("%s: Ignoring invalid use_carrier value %d.\n",
- bond->dev->name, new_value);
- }
-out:
+
+ if (!rtnl_trylock())
+ return restart_syscall();
+
+ ret = bond_option_use_carrier_set(bond, new_value);
+ if (!ret)
+ ret = count;
+
+ rtnl_unlock();
return ret;
}
static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR,