ref: bc895417f804bbb78410a365412bcf8ab59a44b4
dir: /sys/src/cmd/ip/arp.h/
/*
* this file used by (at least) the kernel, arpd, snoopy, tboot
*/
typedef struct Arppkt Arppkt;
typedef struct Arpentry Arpentry;
typedef struct Arpstats Arpstats;
/* Format of ethernet arp request */
struct Arppkt {
uchar d[6];
uchar s[6];
uchar type[2];
uchar hrd[2];
uchar pro[2];
uchar hln;
uchar pln;
uchar op[2];
uchar sha[6];
uchar spa[4];
uchar tha[6];
uchar tpa[4];
};
#define ARPSIZE 42
/* Format of request from starp to user level arpd */
struct Arpentry {
uchar etaddr[6];
uchar ipaddr[4];
};
/* Arp cache statistics */
struct Arpstats {
int hit;
int miss;
int failed;
};
#define ET_ARP 0x0806
#define ET_RARP 0x8035
#define ARP_REQUEST 1
#define ARP_REPLY 2
#define RARP_REQUEST 3
#define RARP_REPLY 4