@@ -570,6 +570,31 @@ static int devlink_nl_port_attrs_put(struct sk_buff *msg,
return 0;
}
+static int
+devlink_port_function_hw_addr_fill(struct devlink *devlink, const struct devlink_ops *ops,
+ struct devlink_port *port, struct sk_buff *msg,
+ struct netlink_ext_ack *extack, bool *msg_updated)
+{
+ u8 hw_addr[MAX_ADDR_LEN];
+ int hw_addr_len;
+ int err;
+
+ if (!ops->port_function_hw_addr_get)
+ return 0;
+
+ err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+ err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
+ if (err)
+ return err;
+ *msg_updated = true;
+ return 0;
+}
+
static int
devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
struct netlink_ext_ack *extack)
@@ -577,36 +602,16 @@ devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *por
struct devlink *devlink = port->devlink;
const struct devlink_ops *ops;
struct nlattr *function_attr;
- bool empty_nest = true;
- int err = 0;
+ bool msg_updated = false;
+ int err;
function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
if (!function_attr)
return -EMSGSIZE;
ops = devlink->ops;
- if (ops->port_function_hw_addr_get) {
- int hw_addr_len;
- u8 hw_addr[MAX_ADDR_LEN];
-
- err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack);
- if (err == -EOPNOTSUPP) {
- /* Port function attributes are optional for a port. If port doesn't
- * support function attribute, returning -EOPNOTSUPP is not an error.
- */
- err = 0;
- goto out;
- } else if (err) {
- goto out;
- }
- err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
- if (err)
- goto out;
- empty_nest = false;
- }
-
-out:
- if (err || empty_nest)
+ err = devlink_port_function_hw_addr_fill(devlink, ops, port, msg, extack, &msg_updated);
+ if (err || !msg_updated)
nla_nest_cancel(msg, function_attr);
else
nla_nest_end(msg, function_attr);