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
|
/*
* Copyright (c) 1995 Danny Gasparovski.
*
* Please read the file COPYRIGHT for the
* terms and conditions of the copyright.
*/
/* MINE */
#ifndef _SLIRP_SOCKET_H_
#define _SLIRP_SOCKET_H_
#define SO_EXPIRE 240000
#define SO_EXPIREFAST 10000
/*
* Our socket structure
*/
struct socket {
struct socket *so_next, *so_prev; /* For a linked list of sockets */
int s; /* The actual socket */
/* XXX union these with not-yet-used sbuf params */
struct mbuf *so_m; /* Pointer to the original SYN packet,
* for non-blocking connect()'s, and
* PING reply's */
struct tcpiphdr *so_ti; /* Pointer to the original ti within
* so_mconn, for non-blocking connections */
int so_urgc;
struct in_addr so_faddr; /* foreign host table entry */
struct in_addr so_laddr; /* local host table entry */
u_int16_t so_fport; /* foreign port */
u_int16_t so_lport; /* local port */
u_int8_t so_iptos; /* Type of service */
u_int8_t so_emu; /* Is the socket emulated? */
u_char so_type; /* Type of socket, UDP or TCP */
int so_state; /* internal state flags SS_*, below */
struct tcpcb *so_tcpcb; /* pointer to TCP protocol control block */
u_int so_expire; /* When the socket will expire */
int so_queued; /* Number of packets queued from this socket */
int so_nqueued; /* Number of packets queued in a row
* Used to determine when to "downgrade" a session
* from fastq to batchq */
struct sbuf so_rcv; /* Receive buffer */
struct sbuf so_snd; /* Send buffer */
void *extra; /* Extra pointer */
};
/*
* Socket state bits. (peer means the host on the Internet,
* local host means the host on the other end of the modem)
*/
#define SS_NOFDREF 0x001 /* No fd reference */
#define SS_ISFCONNECTING \
0x002 /* Socket is connecting to peer (non-blocking connect()'s) */
#define SS_ISFCONNECTED 0x004 /* Socket is connected to peer */
#define SS_FCANTRCVMORE \
0x008 /* Socket can't receive more from peer (for half-closes) */
#define SS_FCANTSENDMORE \
0x010 /* Socket can't send more to peer (for half-closes) */
/* #define SS_ISFDISCONNECTED 0x020*/ /* Socket has disconnected from peer, in
2MSL state */
#define SS_FWDRAIN \
0x040 /* We received a FIN, drain data and set SS_FCANTSENDMORE */
#define SS_CTL 0x080
#define SS_FACCEPTCONN \
0x100 /* Socket is accepting connections from a host on the internet */
#define SS_FACCEPTONCE \
0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */
extern struct socket tcb;
#if defined(DECLARE_IOVEC) && !defined(HAVE_READV)
struct iovec {
char *iov_base;
size_t iov_len;
};
#endif
void so_init _P((void));
struct socket *solookup _P((struct socket *, struct in_addr, u_int,
struct in_addr, u_int));
struct socket *socreate _P((void));
void sofree _P((struct socket *));
int soread _P((struct socket *));
void sorecvoob _P((struct socket *));
int sosendoob _P((struct socket *));
int sowrite _P((struct socket *));
void sorecvfrom _P((struct socket *));
int sosendto _P((struct socket *, struct mbuf *));
struct socket *solisten _P((u_int, u_int32_t, u_int, int));
void sorwakeup _P((struct socket *));
void sowwakeup _P((struct socket *));
void soisfconnecting _P((register struct socket *));
void soisfconnected _P((register struct socket *));
void sofcantrcvmore _P((struct socket *));
void sofcantsendmore _P((struct socket *));
void soisfdisconnected _P((struct socket *));
void sofwdrain _P((struct socket *));
#endif /* _SOCKET_H_ */
|
