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// MIT License, Copyright (c) 2020 Marvin Borner
#ifndef NET_H
#define NET_H
#include <def.h>
#define htonl(l) \
((((l)&0xFF) << 24) | (((l)&0xFF00) << 8) | (((l)&0xFF0000) >> 8) | \
(((l)&0xFF000000) >> 24))
#define htons(s) ((((s)&0xFF) << 8) | (((s)&0xFF00) >> 8))
#define ntohl(l) htonl((l))
#define ntohs(s) htons((s))
#define ETHERNET_TYPE_IP4 0x0800
#define ETHERNET_TYPE_IP6 0x86dd
#define ETHERNET_TYPE_ARP 0x0806
#define IP_PROT_ICMP 0x01
#define IP_PROT_TCP 0x06
#define IP_PROT_UDP 0x11
struct ethernet_packet {
u8 dst[6];
u8 src[6];
u16 type;
u8 data[];
} __attribute__((packed));
struct ip_packet {
u8 version_ihl;
u8 dscp_ecn;
u16 length;
u16 id;
u16 flags_fragment;
u8 ttl;
u8 protocol;
u16 checksum;
u32 src;
u32 dst;
u8 data[];
} __attribute__((packed));
struct icmp_packet {
u8 type;
u8 version;
u16 checksum;
} __attribute__((packed));
void ethernet_handle_packet(struct ethernet_packet *packet, int len);
void net_install();
#endif
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