NetBSD/sys/arch/i386/netboot/packet.h

28 lines
668 B
C

/*
* source in this file came from
* the Mach ethernet boot written by Leendert van Doorn.
*
* Packet layout definitions
*
* $Id: packet.h,v 1.2 1993/08/02 17:53:01 mycroft Exp $
*/
/* implementation constants */
#define PKT_POOLSIZE 5
#define PKT_DATASIZE 1514
/*
* Structure of a packet.
* Each packet can hold exactly one ethernet message.
*/
typedef struct {
u_short pkt_used; /* whether this packet it used */
u_short pkt_len; /* length of data */
u_char *pkt_offset; /* current offset in data */
u_char pkt_data[PKT_DATASIZE]; /* packet data */
} packet_t;
void PktInit(void);
packet_t *PktAlloc(u_long);
void PktRelease(packet_t *);