ndp.h

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#ifndef __NDP_H__
#define __NDP_H__
 
#include <stdint.h>
#include <Fs/vfs.h>
#include <Net/ipv6.h>
 
#define NDP_OPT_SOURCE_LINK 1
#define NDP_OPT_TARGET_LINK 2
 
#if defined(ARCH_X64) || defined(ARCH_ARM64)
#pragma pack(push,1)
#endif
typedef struct _nd_neighbor_solicit_ {
    uint8_t type;       /* 135 */
    uint8_t code;
    uint16_t checksum;
    uint32_t reserved;
    ip6_addr target;
    uint8_t options[];
} NDNeighborSolicit;
 
typedef struct _nd_neighbor_advert_ {
    uint8_t type;       /* 136 */
    uint8_t code;
    uint16_t checksum;
    uint32_t flags;     /* R/S/O in high bits */
    ip6_addr target;
    uint8_t options[];
} NDNeighborAdvert;
 
typedef struct _nd_opt_link_ {
    uint8_t type;
    uint8_t length;     /* units of 8 octets */
    uint8_t mac[6];
} NDOptLinkLayer;
#if defined(ARCH_X64) || defined(ARCH_ARM64)
#pragma pack(pop)
#endif
 
typedef struct _nd_cache_ {
    uint8_t hw_address[6];
    uint16_t flags;
    ip6_addr ipAddress;
    AuVFSNode* nic;
} AuNDCache;
 
extern void NDProtocolInitialise();
extern void NDProtocolAdd(AuVFSNode* nic, const ip6_addr* address, uint8_t* hwaddr);
extern AuNDCache* AuNDGet(const ip6_addr* address);
extern void AuNDRequestMAC(AuVFSNode* nic, const ip6_addr* addr);
extern void NDHandleNeighborSolicit(IPv6Header* ipv6, AuVFSNode* nic);
extern void NDHandleNeighborAdvert(IPv6Header* ipv6, AuVFSNode* nic);
 
#endif