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https://github.com/Mathewnd/Astral.git
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Matheus
72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
#ifndef _NET_H
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#define _NET_H
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#include <stddef.h>
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#include <stdint.h>
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#include <hashtable.h>
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#include <mutex.h>
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#include <event.h>
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#include <string.h>
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typedef struct {
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void *address;
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uintmax_t curroffset;
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size_t size;
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} netdesc_t;
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typedef struct {
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uint8_t address[6];
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} __attribute__((packed)) mac_t;
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typedef struct netdev_t {
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mac_t mac;
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size_t mtu;
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uint32_t ip;
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hashtable_t arpcache;
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int (*allocdesc)(size_t requestedsize, netdesc_t *desc);
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int (*sendpacket)(struct netdev_t *_internal, netdesc_t desc, mac_t targetmac, int proto);
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} netdev_t;
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typedef struct {
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uint8_t version_length;
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uint8_t servicetype_ecn;
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uint16_t packetlen;
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uint16_t id;
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uint16_t flags_fragoffset;
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uint8_t timetolive;
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uint8_t protocol;
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uint16_t framechecksum;
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uint32_t srcaddr;
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uint32_t dstaddr;
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} __attribute__((packed)) ipv4frame_t;
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typedef struct {
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uint16_t srcport;
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uint16_t dstport;
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uint16_t length;
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uint16_t checksum;
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} __attribute__((packed)) udpframe_t;
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typedef struct {
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uint16_t port;
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uint32_t addr;
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} ipv4addr_t;
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#define NET_BROADCAST_MAC (mac_t){.address = {0xff,0xff,0xff,0xff,0xff,0xff}}
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#define MAC_EQUAL(m1,m2) (memcmp(m1, m2, sizeof(mac_t)) == 0)
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#define IPV4_PROTO_UDP 0x11
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#define IPV4_BROADCAST_ADDRESS 0xffffffff
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void arp_init();
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void ipv4_init();
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void udp_init();
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void arp_process(netdev_t *netdev, void *buffer);
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int arp_lookup(netdev_t *netdev, uint32_t ip, mac_t *mac);
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int udp_sendpacket(netdev_t *netdev, netdesc_t desc, uint32_t ip, uint16_t srcport, uint16_t dstport);
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int ipv4_sendpacket(void *buffer, size_t packetsize, uint32_t ip, int proto, netdev_t *broadcastdev);
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#endif
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