bonding: add num_grat_arp attribute netlink support
Add IFLA_BOND_NUM_PEER_NOTIF to allow get/set of bonding parameter
num_grat_arp via netlink. Bonding parameter num_unsol_na is
synonymous with num_grat_arp, so add only one netlink attribute
to represent both bonding parameters.
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 f5c1a54..7efa33a 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -790,8 +790,25 @@
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
- int err = kstrtou8(buf, 10, &bond->params.num_peer_notif);
- return err ? err : count;
+ u8 new_value;
+ int ret;
+
+ ret = kstrtou8(buf, 10, &new_value);
+ if (!ret) {
+ pr_err("%s: invalid value %s specified.\n",
+ bond->dev->name, buf);
+ return ret;
+ }
+
+ if (!rtnl_trylock())
+ return restart_syscall();
+
+ ret = bond_option_num_peer_notif_set(bond, new_value);
+ if (!ret)
+ ret = count;
+
+ rtnl_unlock();
+ return ret;
}
static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR,
bonding_show_num_peer_notif, bonding_store_num_peer_notif);