+ int (*pr_lock) (struct socket *so, int locktype, int debug); /* lock function for protocol */
+ int (*pr_unlock) (struct socket *so, int locktype, int debug); /* unlock for protocol */
+#ifdef _KERN_LOCKS_H_
+ lck_mtx_t * (*pr_getlock) (struct socket *so, int locktype); /* unlock for protocol */
+#else
+ void * (*pr_getlock) (struct socket *so, int locktype); /* unlock for protocol */
+#endif