SALINK
SALINK Head; /* allways one link to speed up insert and delete */
SALINK linkNode; /**< the link node data structure of the device */
SALINK linkNode; /**< the link node data structure of the IO request */
SALINK fastLink; /* Fast I/O's chain */
SALINK linkNode; /**< the link node data structure of the timer */
SALINK linkNode; /**< the link node data structure of the port */