リフレクションを使用して Go で構造体のプロパティに動的にアクセスして変更するにはどうすればよいですか?

type SshConfig struct {
    Host      string
    Port      string
    User      string
    LocalForward string
}

if split[0] == "Port" {
    sshConfig.Port = strings.Join(split[1:], " ")
}

// setField sets field of v with given name to given value.
func setField(v interface{}, name string, value string) error {
    // v must be a pointer to a struct
    rv := reflect.ValueOf(v)
    if rv.Kind() != reflect.Ptr || rv.Elem().Kind() != reflect.Struct {
        return errors.New("v must be pointer to struct")
    }

    // Dereference pointer
    rv = rv.Elem()

    // Lookup field by name
    fv := rv.FieldByName(name)
    if !fv.IsValid() {
        return fmt.Errorf("not a field name: %s", name)
    }

    // Field must be exported
    if !fv.CanSet() {
        return fmt.Errorf("cannot set field %s", name)
    }

    // We expect a string field
    if fv.Kind() != reflect.String {
        return fmt.Errorf("%s is not a string field", name)
    }

    // Set the value
    fv.SetString(value)
    return nil
}

var config SshConfig

...

err := setField(&config, split[0], strings.Join(split[1:], " "))
if err != nil {
   // handle error
}