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#pragma once
#include <camellia/types.h>
#include <stdbool.h>
#include <stdint.h>
typedef uint8_t mac_t[6];
static const mac_t MAC_BROADCAST = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
extern struct net_state {
mac_t mac;
uint32_t ip, gateway;
handle_t raw_h;
} state;
enum { /* ethertype */
ET_IPv4 = 0x800,
ET_ARP = 0x806,
};
struct ethernet {
const mac_t *src, *dst;
uint16_t type;
};
struct ipv4 {
struct ethernet e;
uint32_t src, dst;
uint16_t id, fraginfo;
uint8_t proto;
const uint8_t *header; size_t hlen;
};
struct tcp {
struct ipv4 ip;
uint16_t src, dst;
};
struct udp {
struct ipv4 ip;
uint16_t src, dst;
};
struct icmp {
struct ipv4 ip;
uint8_t type, code;
};
/* NOT THREADSAFE, YET USED FROM CONCURRENT THREADS
* will break if i implement a scheduler*/
struct ethq {
struct ethq *next;
handle_t h;
};
extern struct ethq *ether_queue;
void arp_parse(const uint8_t *buf, size_t len);
void arp_request(uint32_t ip);
/* 0 on success, -1 on failure */
int arpcache_get(uint32_t ip, mac_t *mac);
void arp_fsread(handle_t h, long offset);
long arp_fswrite(const char *buf, long len, long offset);
void icmp_parse(const uint8_t *buf, size_t len, struct ipv4 ip);
void icmp_send(const void *payload, size_t len, struct icmp i);
void ipv4_parse(const uint8_t *buf, size_t len, struct ethernet ether);
void ipv4_send(const void *payload, size_t len, struct ipv4 ip);
void ether_parse(const uint8_t *buf, size_t len);
uint8_t *ether_start(size_t len, struct ethernet ether);
void ether_finish(uint8_t *pkt);
struct udp_conn;
void udp_parse(const uint8_t *buf, size_t len, struct ipv4 ip);
/* calls callback once, after a client connects. */
void udp_listen(
uint16_t port,
void (*on_conn)(struct udp_conn *, void *carg),
void (*on_recv)(const void *, size_t, void *carg),
void *carg);
struct udp_conn *udpc_new(
struct udp u,
void (*on_recv)(const void *, size_t, void *carg),
void *carg);
// TODO udp_onclosed
void udpc_send(struct udp_conn *, const void *buf, size_t len);
/* frees */
void udpc_close(struct udp_conn *);
struct tcp_conn;
void tcp_parse(const uint8_t *buf, size_t len, struct ipv4 ip);
void tcp_listen(
uint16_t port,
void (*on_conn)(struct tcp_conn *, void *carg),
void (*on_recv)(void *carg),
void (*on_close)(void *carg),
void *carg);
struct tcp_conn *tcpc_new(
struct tcp t,
void (*on_recv)(void *carg),
void (*on_close)(void *carg),
void *carg);
size_t tcpc_tryread(struct tcp_conn *, void *buf, size_t len);
void tcpc_send(struct tcp_conn *, const void *buf, size_t len);
void tcpc_close(struct tcp_conn *);
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