mirror of https://github.com/zrafa/xinu-avr.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
50 lines
1.7 KiB
50 lines
1.7 KiB
/* arp.h */ |
|
|
|
/* Items related to ARP - definition of cache and the packet format */ |
|
|
|
#define ARP_HALEN 6 /* Size of Ethernet MAC address */ |
|
#define ARP_PALEN 4 /* Size of IP address */ |
|
|
|
#define ARP_HTYPE 1 /* Ethernet hardware type */ |
|
#define ARP_PTYPE 0x0800 /* IP protocol type */ |
|
|
|
#define ARP_OP_REQ 1 /* Request op code */ |
|
#define ARP_OP_RPLY 2 /* Reply op code */ |
|
|
|
#define ARP_SIZ 16 /* Number of entries in a cache */ |
|
|
|
#define ARP_RETRY 3 /* Num. retries for ARP request */ |
|
|
|
#define ARP_TIMEOUT 300 /* Retry timer in milliseconds */ |
|
|
|
/* State of an ARP cache entry */ |
|
|
|
#define AR_FREE 0 /* Slot is unused */ |
|
#define AR_PENDING 1 /* Resolution in progress */ |
|
#define AR_RESOLVED 2 /* Entry is valid */ |
|
|
|
#pragma pack(2) |
|
struct arppacket { /* ARP packet for IP & Ethernet */ |
|
byte arp_ethdst[ETH_ADDR_LEN];/* Ethernet dest. MAC addr */ |
|
byte arp_ethsrc[ETH_ADDR_LEN];/* Ethernet source MAC address */ |
|
uint16 arp_ethtype; /* Ethernet type field */ |
|
uint16 arp_htype; /* ARP hardware type */ |
|
uint16 arp_ptype; /* ARP protocol type */ |
|
byte arp_hlen; /* ARP hardware address length */ |
|
byte arp_plen; /* ARP protocol address length */ |
|
uint16 arp_op; /* ARP operation */ |
|
byte arp_sndha[ARP_HALEN]; /* ARP sender's Ethernet addr */ |
|
uint32 arp_sndpa; /* ARP sender's IP address */ |
|
byte arp_tarha[ARP_HALEN]; /* ARP target's Ethernet addr */ |
|
uint32 arp_tarpa; /* ARP target's IP address */ |
|
}; |
|
#pragma pack() |
|
|
|
struct arpentry { /* Entry in the ARP cache */ |
|
int32 arstate; /* State of the entry */ |
|
uint32 arpaddr; /* IP address of the entry */ |
|
pid32 arpid; /* Waiting process or -1 */ |
|
byte arhaddr[ARP_HALEN]; /* Ethernet address of the entry*/ |
|
}; |
|
|
|
extern struct arpentry arpcache[];
|
|
|