tun2socks 0.0.1

High performance tun2socks
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138

/*
 ============================================================================
 Name        : hev-task-io-reactor-kqueue.h
 Author      : Heiher <r@hev.cc>
 Copyright   : Copyright (c) 2018 - 2022 everyone.
 Description : I/O Reactor KQueue
 ============================================================================
 */

#ifndef __HEV_TASK_IO_REACTOR_KQUEUE_H__
#define __HEV_TASK_IO_REACTOR_KQUEUE_H__

#include <poll.h>
#include <sys/types.h>
#include <sys/event.h>
#include <sys/time.h>

#ifndef EVFILT_EXCEPT
#define EVFILT_EXCEPT (0)
#endif

#define HEV_TASK_IO_REACTOR_EVENT_GEN_MAX (6)

typedef struct _HevTaskIOReactorKQueue HevTaskIOReactorKQueue;
typedef struct kevent HevTaskIOReactorSetupEvent;
typedef struct kevent HevTaskIOReactorWaitEvent;

struct _HevTaskIOReactorKQueue
{
    HevTaskIOReactor base;
};

enum _HevTaskIOReactorEvents
{
    HEV_TASK_IO_REACTOR_EV_RO = EVFILT_READ,
    HEV_TASK_IO_REACTOR_EV_WO = EVFILT_WRITE,
    HEV_TASK_IO_REACTOR_EV_ER = EVFILT_EXCEPT,
};

enum _HevTaskIOReactorOperation
{
    HEV_TASK_IO_REACTOR_OP_ADD,
    HEV_TASK_IO_REACTOR_OP_MOD,
    HEV_TASK_IO_REACTOR_OP_DEL,
};

static inline int
hev_task_io_reactor_open (void)
{
    return kqueue ();
}

static inline int
hev_task_io_reactor_wait (HevTaskIOReactor *reactor,
                          HevTaskIOReactorWaitEvent *events, int count,
                          int timeout)
{
    struct timespec tsz = { 0 };
    struct timespec *tsp = NULL;

    if (timeout >= 0)
        tsp = &tsz;

    return kevent (reactor->fd, NULL, 0, events, count, tsp);
}

static inline void
hev_task_io_reactor_setup_event_set (HevTaskIOReactorSetupEvent *event, int fd,
                                     HevTaskIOReactorOperation op,
                                     unsigned int events, void *data)
{
    int action;

    switch (op) {
    case HEV_TASK_IO_REACTOR_OP_ADD:
    case HEV_TASK_IO_REACTOR_OP_MOD:
        action = EV_ADD;
        break;
    case HEV_TASK_IO_REACTOR_OP_DEL:
        action = EV_DELETE;
    }

    EV_SET (event, fd, events, action | EV_CLEAR, 0, 0, data);
}

static inline int
hev_task_io_reactor_setup_event_gen (HevTaskIOReactorSetupEvent *events, int fd,
                                     HevTaskIOReactorOperation op,
                                     unsigned int poll_events, void *data)
{
    int count = 0;

    if (op > HEV_TASK_IO_REACTOR_OP_ADD) {
        if (!(poll_events & POLLIN))
            hev_task_io_reactor_setup_event_set (&events[count++], fd,
                                                 HEV_TASK_IO_REACTOR_OP_DEL,
                                                 HEV_TASK_IO_REACTOR_EV_RO,
                                                 data);
        if (!(poll_events & POLLOUT))
            hev_task_io_reactor_setup_event_set (&events[count++], fd,
                                                 HEV_TASK_IO_REACTOR_OP_DEL,
                                                 HEV_TASK_IO_REACTOR_EV_WO,
                                                 data);
        if (!(poll_events & POLLERR))
            hev_task_io_reactor_setup_event_set (&events[count++], fd,
                                                 HEV_TASK_IO_REACTOR_OP_DEL,
                                                 HEV_TASK_IO_REACTOR_EV_ER,
                                                 data);
        if (op == HEV_TASK_IO_REACTOR_OP_DEL)
            return count;
    }

    if (poll_events & POLLIN)
        hev_task_io_reactor_setup_event_set (&events[count++], fd, op,
                                             HEV_TASK_IO_REACTOR_EV_RO, data);
    if (poll_events & POLLOUT)
        hev_task_io_reactor_setup_event_set (&events[count++], fd, op,
                                             HEV_TASK_IO_REACTOR_EV_WO, data);
    if (poll_events & POLLERR)
        hev_task_io_reactor_setup_event_set (&events[count++], fd, op,
                                             HEV_TASK_IO_REACTOR_EV_ER, data);

    return count;
}

static inline unsigned int
hev_task_io_reactor_wait_event_get_events (HevTaskIOReactorWaitEvent *event)
{
    return event->filter;
}

static inline void *
hev_task_io_reactor_wait_event_get_data (HevTaskIOReactorWaitEvent *event)
{
    return event->udata;
}

#endif /* __HEV_TASK_IO_REACTOR_KQUEUE_H__ */