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https://github.com/Mathewnd/Astral.git
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Matheus
111 lines
3.0 KiB
C
111 lines
3.0 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 <string.h>
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#include <arch/cpu.h>
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#include <kernel/abi.h>
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#include <kernel/alloc.h>
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#include <errno.h>
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#include <logging.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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uint16_t port;
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uint32_t addr;
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} ipv4addr_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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#define NETDEV_FLAGS_UP 0x1
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#define NETDEV_FLAGS_BROADCAST 0x2
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#define NETDEV_FLAGS_DEBUG 0x4
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#define NETDEV_FLAGS_LOOPBACK 0x8
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#define NETDEV_FLAGS_RUNNING 0x40
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#define NETDEV_FLAGS_WLAN 0x80
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struct netdev_t;
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typedef struct {
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int (*allocdesc)(struct netdev_t *netdev, size_t requestedsize, netdesc_t *desc);
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int (*freedesc)(struct netdev_t *netdev, netdesc_t *desc);
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// consumes desc regardless of the returned status
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int (*sendpacket)(struct netdev_t *netdev, netdesc_t desc, mac_t targetmac, int proto);
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} netdevops_t;
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typedef struct netdev_t {
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mac_t mac;
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int ifindex;
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size_t mtu;
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uint32_t ip;
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int ipcurrid; // XXX This is defined as something per peer. However, having only one of these *should* work for most cases
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hashtable_t arpcache;
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short flags;
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const netdevops_t *ops;
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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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#define IPV4_HEADER_LENGTH(version_length) (((version_length) & 0xf) * 4)
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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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#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_TCP 0x06
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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 tcp_init();
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void loopback_init();
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netdev_t *loopback_device();
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void udp_process(netdev_t *netdev, void *buffer, uint32_t ip);
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void arp_process(netdev_t *netdev, void *buffer);
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void tcp_process(netdev_t *netdev, void *buffer, ipv4frame_t *ipv4frame);
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int arp_lookup(netdev_t *netdev, uint32_t ip, mac_t *mac);
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int udp_sendpacket(iovec_iterator_t *iovec_iterator, size_t packetsize, uint32_t ip, uint16_t srcport, uint16_t dstport, netdev_t *broadcastdev);
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int ipv4_sendpacket(void *buffer, size_t packetsize, uint32_t ip, int proto, netdev_t *broadcastdev);
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size_t ipv4_getmtu(uint32_t ip);
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uint32_t ipv4_getnetdevip(uint32_t ip);
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void ipv4_process(netdev_t *netdev, void *nextbuff, size_t size);
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int ipv4_addroute(netdev_t *netdev, uint32_t addr, uint32_t gateway, uint32_t mask, int weight);
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int netdev_initialize(netdev_t *netdev, const netdevops_t *ops, size_t mtu, mac_t mac);
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void netdev_destroy(netdev_t *netdev);
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int netdev_register(netdev_t *netdev, char *name);
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netdev_t *netdev_getdev(char *name);
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netdev_t *netdev_from_minor(uint16_t minor);
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#endif
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