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Actually add ipv4 header for ipv4 support

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This commit is contained in:
Lucas Schumacher 2025-04-29 01:42:49 -04:00
parent b890d54c8f
commit abbace3df4
1 changed files with 53 additions and 0 deletions
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53
net/ipv4.h Normal file
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#ifndef MINIMAL_IPV4_H
#define MINIMAL_IPV4_H
// From kernel header in.h
// location: uapi/linux/in.h or linux/in.h (older kerns) or /usr/include/netinet/in.h (installed path)
#include "../sys.h"
#include "../int.h"
struct in_addr {
uint32_t s_addr;
};
#define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
struct sockaddr_in {
unsigned short sin_family; // address family: AF_INET
uint16_t sin_port; // port in network byte order
struct in_addr sin_addr; // internet address
// Padding to match the size of struct sockaddr
unsigned char sin_zero[8];
};
/* Address to accept any incoming messages. */
#define INADDR_ANY ((unsigned long int) 0x00000000)
/* Standard well-defined IP protocols. */
enum {
IPPROTO_IP = 0, /* Dummy protocol for TCP */
IPPROTO_ICMP = 1, /* Internet Control Message Protocol */
IPPROTO_IGMP = 2, /* Internet Group Management Protocol */
IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */
IPPROTO_TCP = 6, /* Transmission Control Protocol */
IPPROTO_EGP = 8, /* Exterior Gateway Protocol */
IPPROTO_PUP = 12, /* PUP protocol */
IPPROTO_UDP = 17, /* User Datagram Protocol */
IPPROTO_IDP = 22, /* XNS IDP protocol */
IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol */
IPPROTO_RSVP = 46, /* RSVP protocol */
IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */
IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */
IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */
IPPROTO_AH = 51, /* Authentication Header protocol */
IPPROTO_BEETPH = 94, /* IP option pseudo header for BEET */
IPPROTO_PIM = 103, /* Protocol Independent Multicast */
IPPROTO_COMP = 108, /* Compression Header protocol */
IPPROTO_SCTP = 132, /* Stream Control Transport Protocol */
IPPROTO_RAW = 255, /* Raw IP packets */
IPPROTO_MAX
};
#endif // MINIMAL_IPV4_H