usr/src/sys/netinet/in_systm.h

/*      in_systm.h      4.14    82/10/09        */

/*
 * Miscellaneous internetwork
 * definitions for kernel.
 */

#ifndef LOCORE
/*
 * Network types.
 *
 * Internally the system keeps counters in the headers with the bytes
 * swapped so that VAX instructions will work on them.  It reverses
 * the bytes before transmission at each protocol level.  The n_ types
 * represent the types with the bytes in ``high-ender'' order.
 */
typedef u_short n_short;                /* short as received from the net */
typedef u_long  n_long;                 /* long as received from the net */

typedef u_long  n_time;                 /* ms since 00:00 GMT, byte rev */
#endif

#ifndef LOCORE
#ifdef KERNEL
n_time  iptime();
#endif
#endif