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
|
/*
* Copyright (c) 1995 Danny Gasparovski.
*
* Please read the file COPYRIGHT for the
* terms and conditions of the copyright.
*/
#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 */
int pollfds_idx; /* GPollFD GArray index */
Slirp *slirp; /* managing slirp instance */
/* 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;
union { /* foreign host */
struct sockaddr_storage ss;
struct sockaddr_in sin;
} fhost;
#define so_faddr fhost.sin.sin_addr
#define so_fport fhost.sin.sin_port
#define so_ffamily fhost.ss.ss_family
union { /* local host */
struct sockaddr_storage ss;
struct sockaddr_in sin;
} lhost;
#define so_laddr lhost.sin.sin_addr
#define so_lport lhost.sin.sin_port
#define so_lfamily lhost.ss.ss_family
uint8_t so_iptos; /* Type of service */
uint8_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_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 */
#define SS_PERSISTENT_MASK 0xf000 /* Unremovable state bits */
#define SS_HOSTFWD 0x1000 /* Socket describes host->guest forwarding */
#define SS_INCOMING 0x2000 /* Connection was initiated by a host on the internet */
struct socket * solookup(struct socket *, struct in_addr, u_int, struct in_addr, u_int);
struct socket * socreate(Slirp *);
void sofree(struct socket *);
int soread(struct socket *);
void sorecvoob(struct socket *);
int sosendoob(struct socket *);
int sowrite(struct socket *);
void sorecvfrom(struct socket *);
int sosendto(struct socket *, struct mbuf *);
struct socket * tcp_listen(Slirp *, uint32_t, u_int, uint32_t, u_int,
int);
void soisfconnecting(register struct socket *);
void soisfconnected(register struct socket *);
void sofwdrain(struct socket *);
struct iovec; /* For win32 */
size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np);
int soreadbuf(struct socket *so, const char *buf, int size);
#endif /* _SOCKET_H_ */
|
