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111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
#ifndef LLARP_EV_H
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#define LLARP_EV_H
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#if defined(__MINGW32__) || defined(_WIN32)
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#include <wspiapi.h>
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#ifndef ssize_t
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#define ssize_t long
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#endif
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#else
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#include <netinet/in.h>
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#include <sys/socket.h>
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#endif
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <tuntap.h>
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/**
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* ev.h
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*
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* event handler (cross platform high performance event system for IO)
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*/
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// forward declare
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struct llarp_threadpool;
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struct llarp_logic;
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struct llarp_ev_loop;
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/// allocator
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void
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llarp_ev_loop_alloc(struct llarp_ev_loop **ev);
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// deallocator
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void
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llarp_ev_loop_free(struct llarp_ev_loop **ev);
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/// run main loop
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int
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llarp_ev_loop_run(struct llarp_ev_loop *ev, struct llarp_logic *logic);
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void
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llarp_ev_loop_run_single_process(struct llarp_ev_loop *ev,
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struct llarp_threadpool *tp,
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struct llarp_logic *logic);
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/// stop event loop and wait for it to complete all jobs
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void
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llarp_ev_loop_stop(struct llarp_ev_loop *ev);
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/// UDP handling configuration
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struct llarp_udp_io
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{
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void *user;
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void *impl;
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struct llarp_ev_loop *parent;
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/// called every event loop tick after reads
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void (*tick)(struct llarp_udp_io *);
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void (*recvfrom)(struct llarp_udp_io *, const struct sockaddr *, const void *,
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ssize_t);
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};
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/// add UDP handler
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int
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llarp_ev_add_udp(struct llarp_ev_loop *ev, struct llarp_udp_io *udp,
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const struct sockaddr *src);
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/// schedule UDP packet
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int
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llarp_ev_udp_sendto(struct llarp_udp_io *udp, const struct sockaddr *to,
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const void *data, size_t sz);
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/// close UDP handler
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int
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llarp_ev_close_udp(struct llarp_udp_io *udp);
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#ifdef _WIN32
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#define IFNAMSIZ (16)
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#endif
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struct llarp_tun_io
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{
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// TODO: more info?
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char ifaddr[128];
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int netmask;
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char ifname[IFNAMSIZ + 1];
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void *user;
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void *impl;
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struct llarp_ev_loop *parent;
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/// called when we are able to write right before we write
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/// this happens after reading packets
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void (*before_write)(struct llarp_tun_io *);
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/// called every event loop tick after reads
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void (*tick)(struct llarp_tun_io *);
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void (*recvpkt)(struct llarp_tun_io *, const void *, ssize_t);
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};
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/// create tun interface with network interface name ifname
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/// returns true on success otherwise returns false
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bool
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llarp_ev_add_tun(struct llarp_ev_loop *ev, struct llarp_tun_io *tun);
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/// async write a packet on tun interface
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/// returns true if queued, returns false on drop
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bool
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llarp_ev_tun_async_write(struct llarp_tun_io *tun, const void *pkt, size_t sz);
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#endif
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