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>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index e161c9cbd91e..07123a0fcf5d 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -37,6 +37,7 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
         [IFLA_BOND_FAIL_OVER_MAC]       = { .type = NLA_U8 },
         [IFLA_BOND_XMIT_HASH_POLICY]    = { .type = NLA_U8 },
         [IFLA_BOND_RESEND_IGMP]         = { .type = NLA_U32 },
+        [IFLA_BOND_NUM_PEER_NOTIF]      = { .type = NLA_U8 },
 };
 
 static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
@@ -204,6 +205,14 @@ static int bond_changelink(struct net_device *bond_dev,
                 if (err)
                         return err;
         }
+        if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
+                int num_peer_notif =
+                        nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
+
+                err = bond_option_num_peer_notif_set(bond, num_peer_notif);
+                if (err)
+                        return err;
+        }
         return 0;
 }
 
@@ -237,6 +246,7 @@ static size_t bond_get_size(const struct net_device *bond_dev)
                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_FAIL_OVER_MAC */
                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_XMIT_HASH_POLICY */
                 nla_total_size(sizeof(u32)) +   /* IFLA_BOND_RESEND_IGMP */
+                nla_total_size(sizeof(u8)) +    /* IFLA_BOND_NUM_PEER_NOTIF */
                 0;
 }
 
@@ -317,6 +327,10 @@ static int bond_fill_info(struct sk_buff *skb,
                         bond->params.resend_igmp))
                 goto nla_put_failure;
 
+        if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
+                       bond->params.num_peer_notif))
+                goto nla_put_failure;
+
         return 0;
 
 nla_put_failure: