L2CAP security policy definition

namespace bluetooth {

namespace l2cap {

class SecurityPolicy {};

class SecurityPolicy {

 public:

  enum class Level {

    LEVEL_0,  // Encryption not needed. Only applies to SDP.

    LEVEL_2,  // Encryption desired. Only needs unauthenticated link key.

    LEVEL_3,  // Encryption required and authenticated link key required.

  };

  Level security_level_ = Level::LEVEL_0;

};

}  // namespace l2cap

}  // namespace bluetooth