bonding: add fail_over_mac attribute netlink support

Add IFLA_BOND_FAIL_OVER_MAC to allow get/set of bonding parameter
fail_over_mac via netlink.

Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 18 deletions

diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 324afa5fda93..c84a90f9a0ac 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -442,33 +442,23 @@ static ssize_t bonding_store_fail_over_mac(struct device *d,
                                            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 (!rtnl_trylock())
-                return restart_syscall();
-
-        if (bond_has_slaves(bond)) {
-                pr_err("%s: Can't alter fail_over_mac with slaves in bond.\n",
-                       bond->dev->name);
-                ret = -EPERM;
-                goto out;
-        }
-
         new_value = bond_parse_parm(buf, fail_over_mac_tbl);
         if (new_value < 0) {
                 pr_err("%s: Ignoring invalid fail_over_mac value %s.\n",
                        bond->dev->name, buf);
-                ret = -EINVAL;
-                goto out;
+                return -EINVAL;
         }
 
-        bond->params.fail_over_mac = new_value;
-        pr_info("%s: Setting fail_over_mac to %s (%d).\n",
-                bond->dev->name, fail_over_mac_tbl[new_value].modename,
-                new_value);
+        if (!rtnl_trylock())
+                return restart_syscall();
+
+        ret = bond_option_fail_over_mac_set(bond, new_value);
+        if (!ret)
+                ret = count;
 
-out:
         rtnl_unlock();
         return ret;
 }