1/*
2 * Copyright (c) 1995 Danny Gasparovski.
3 *
4 * Please read the file COPYRIGHT for the
5 * terms and conditions of the copyright.
6 */
7
8/* MINE */
9
10#ifndef _SLIRP_SOCKET_H_
11#define _SLIRP_SOCKET_H_
12
13#define SO_EXPIRE 240000
14#define SO_EXPIREFAST 10000
15
16/*
17 * Our socket structure
18 */
19
20struct socket {
21  struct socket *so_next,*so_prev;      /* For a linked list of sockets */
22
23  int s;                           /* The actual socket */
24
25			/* XXX union these with not-yet-used sbuf params */
26  struct mbuf *so_m;	           /* Pointer to the original SYN packet,
27				    * for non-blocking connect()'s, and
28				    * PING reply's */
29  struct tcpiphdr *so_ti;	   /* Pointer to the original ti within
30				    * so_mconn, for non-blocking connections */
31  int so_urgc;
32  uint32_t   so_faddr_ip;
33  uint32_t   so_laddr_ip;
34  uint16_t   so_faddr_port;
35  uint16_t   so_laddr_port;
36  uint16_t   so_haddr_port;
37
38  u_int8_t	so_iptos;	/* Type of service */
39  u_int8_t	so_emu;		/* Is the socket emulated? */
40
41  u_char	so_type;		/* Type of socket, UDP or TCP */
42  int	so_state;		/* internal state flags SS_*, below */
43
44  struct 	tcpcb *so_tcpcb;	/* pointer to TCP protocol control block */
45  u_int	so_expire;		/* When the socket will expire */
46
47  int	so_queued;		/* Number of packets queued from this socket */
48  int	so_nqueued;		/* Number of packets queued in a row
49				 * Used to determine when to "downgrade" a session
50					 * from fastq to batchq */
51
52  struct sbuf so_rcv;		/* Receive buffer */
53  struct sbuf so_snd;		/* Send buffer */
54  void * extra;			/* Extra pointer */
55};
56
57
58/*
59 * Socket state bits. (peer means the host on the Internet,
60 * local host means the host on the other end of the modem)
61 */
62#define SS_NOFDREF		0x001	/* No fd reference */
63
64#define SS_ISFCONNECTING	0x002	/* Socket is connecting to peer (non-blocking connect()'s) */
65#define SS_ISFCONNECTED		0x004	/* Socket is connected to peer */
66#define SS_FCANTRCVMORE		0x008	/* Socket can't receive more from peer (for half-closes) */
67#define SS_FCANTSENDMORE	0x010	/* Socket can't send more to peer (for half-closes) */
68/* #define SS_ISFDISCONNECTED	0x020*/	/* Socket has disconnected from peer, in 2MSL state */
69#define SS_FWDRAIN		0x040	/* We received a FIN, drain data and set SS_FCANTSENDMORE */
70
71#define SS_CTL			0x080
72#define SS_FACCEPTCONN		0x100	/* Socket is accepting connections from a host on the internet */
73#define SS_FACCEPTONCE		0x200	/* If set, the SS_FACCEPTCONN socket will die after one accept */
74#define SS_PROXIFIED            0x400   /* Socket is trying to connect through a proxy, only makes sense
75                                           when SS_ISFCONNECTING is also set */
76
77extern struct socket tcb;
78
79void so_init _P((void));
80struct socket * solookup _P((struct socket *, uint32_t, u_int, uint32_t, u_int));
81struct socket * socreate _P((void));
82void sofree _P((struct socket *));
83int soread _P((struct socket *));
84void sorecvoob _P((struct socket *));
85int sosendoob _P((struct socket *));
86int sowrite _P((struct socket *));
87void sorecvfrom _P((struct socket *));
88int sosendto _P((struct socket *, struct mbuf *));
89struct socket * solisten _P((u_int, u_int32_t, u_int, int));
90int  sounlisten _P((u_int port));
91void soisfconnecting _P((register struct socket *));
92void soisfconnected _P((register struct socket *));
93void soisfdisconnected _P((struct socket *));
94void sofwdrain _P((struct socket *));
95struct iovec; /* For win32 */
96size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np);
97int soreadbuf(struct socket *so, const char *buf, int size);
98
99#endif /* _SOCKET_H_ */
100