bonding: export slave's partner_oper_port_state via sysfs and netlink

Export the partner_oper_port_state of each port via sysfs and netlink.
In 802.3ad mode it is valuable for the user to be able to check the
partner_oper state, it is already exported via bond's proc entry.

Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 21 insertions, 0 deletions

diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index a0e600db4236..5580fcde738f 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -29,6 +29,7 @@ static size_t bond_get_slave_size(const struct net_device *bond_dev,
                 nla_total_size(sizeof(u16)) +   /* IFLA_BOND_SLAVE_QUEUE_ID */
                 nla_total_size(sizeof(u16)) +   /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */
                 nla_total_size(sizeof(u8)) +    /* IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE */
+                nla_total_size(sizeof(u16)) +   /* IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE */
                 0;
 }
 
@@ -69,6 +70,10 @@ static int bond_fill_slave_info(struct sk_buff *skb,
                                        IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE,
                                        ad_port->actor_oper_port_state))
                                 goto nla_put_failure;
+                        if (nla_put_u16(skb,
+                                        IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE,
+                                        ad_port->partner_oper.port_state))
+                                goto nla_put_failure;
                 }
         }
 
diff --git a/drivers/net/bonding/bond_sysfs_slave.c b/drivers/net/bonding/bond_sysfs_slave.c
index f6c197cee669..7d16c51e6913 100644
--- a/drivers/net/bonding/bond_sysfs_slave.c
+++ b/drivers/net/bonding/bond_sysfs_slave.c
@@ -95,6 +95,21 @@ static ssize_t ad_actor_oper_port_state_show(struct slave *slave, char *buf)
 }
 static SLAVE_ATTR_RO(ad_actor_oper_port_state);
 
+static ssize_t ad_partner_oper_port_state_show(struct slave *slave, char *buf)
+{
+        const struct port *ad_port;
+
+        if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
+                ad_port = &SLAVE_AD_INFO(slave)->port;
+                if (ad_port->aggregator)
+                        return sprintf(buf, "%u\n",
+                                       ad_port->partner_oper.port_state);
+        }
+
+        return sprintf(buf, "N/A\n");
+}
+static SLAVE_ATTR_RO(ad_partner_oper_port_state);
+
 static const struct slave_attribute *slave_attrs[] = {
         &slave_attr_state,
         &slave_attr_mii_status,
@@ -103,6 +118,7 @@ static const struct slave_attribute *slave_attrs[] = {
         &slave_attr_queue_id,
         &slave_attr_ad_aggregator_id,
         &slave_attr_ad_actor_oper_port_state,
+        &slave_attr_ad_partner_oper_port_state,
         NULL
 };