bridge: netlink: export port's topology_change_ack and config_pending

Add IFLA_BRPORT_TOPOLOGY_CHANGE_ACK and IFLA_BRPORT_CONFIG_PENDING to
allow getting port's topology_change_ack and config_pending respectively
via netlink.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/uapi/linux/if_link.h

@@ -298,6 +298,8 @@ enum {
 	IFLA_BRPORT_DESIGNATED_COST,
 	IFLA_BRPORT_ID,
 	IFLA_BRPORT_NO,
+	IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
+	IFLA_BRPORT_CONFIG_PENDING,
 	__IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)

net/bridge/br_netlink.c

@@ -133,6 +133,8 @@ static inline size_t br_port_info_size(void)
 		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_DESIGNATED_COST */
 		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_ID */
 		+ nla_total_size(sizeof(u16))	/* IFLA_BRPORT_NO */
+		+ nla_total_size(sizeof(u8))	/* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
+		+ nla_total_size(sizeof(u8))	/* IFLA_BRPORT_CONFIG_PENDING */
 		+ 0;
 }
 
@@ -174,7 +176,10 @@ static int br_port_fill_attrs(struct sk_buff *skb,
 	    nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
 	    nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
 	    nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
-	    nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no))
+	    nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
+	    nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
+		       p->topology_change_ack) ||
+	    nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending))
 		return -EMSGSIZE;
 
 	return 0;