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  struct in_addr so_faddr;	   /* foreign host table entry */
33  struct in_addr so_laddr;	   /* local host table entry */
34  u_int16_t so_fport;		   /* foreign port */
35  u_int16_t so_lport;		   /* local port */
36
37  u_int8_t	so_iptos;	/* Type of service */
38  u_int8_t	so_emu;		/* Is the socket emulated? */
39
40  u_char	so_type;		/* Type of socket, UDP or TCP */
41  int	so_state;		/* internal state flags SS_*, below */
42
43  struct 	tcpcb *so_tcpcb;	/* pointer to TCP protocol control block */
44  u_int	so_expire;		/* When the socket will expire */
45
46  int	so_queued;		/* Number of packets queued from this socket */
47  int	so_nqueued;		/* Number of packets queued in a row
48				 * Used to determine when to "downgrade" a session
49					 * from fastq to batchq */
50
51  struct sbuf so_rcv;		/* Receive buffer */
52  struct sbuf so_snd;		/* Send buffer */
53  void * extra;			/* Extra pointer */
54};
55
56
57/*
58 * Socket state bits. (peer means the host on the Internet,
59 * local host means the host on the other end of the modem)
60 */
61#define SS_NOFDREF		0x001	/* No fd reference */
62
63#define SS_ISFCONNECTING	0x002	/* Socket is connecting to peer (non-blocking connect()'s) */
64#define SS_ISFCONNECTED		0x004	/* Socket is connected to peer */
65#define SS_FCANTRCVMORE		0x008	/* Socket can't receive more from peer (for half-closes) */
66#define SS_FCANTSENDMORE	0x010	/* Socket can't send more to peer (for half-closes) */
67/* #define SS_ISFDISCONNECTED	0x020*/	/* Socket has disconnected from peer, in 2MSL state */
68#define SS_FWDRAIN		0x040	/* We received a FIN, drain data and set SS_FCANTSENDMORE */
69
70#define SS_CTL			0x080
71#define SS_FACCEPTCONN		0x100	/* Socket is accepting connections from a host on the internet */
72#define SS_FACCEPTONCE		0x200	/* If set, the SS_FACCEPTCONN socket will die after one accept */
73
74extern struct socket tcb;
75
76struct socket * solookup _P((struct socket *, struct in_addr, u_int, struct in_addr, u_int));
77struct socket * socreate _P((void));
78void sofree _P((struct socket *));
79int soread _P((struct socket *));
80void sorecvoob _P((struct socket *));
81int sosendoob _P((struct socket *));
82int sowrite _P((struct socket *));
83void sorecvfrom _P((struct socket *));
84int sosendto _P((struct socket *, struct mbuf *));
85struct socket * solisten _P((u_int, u_int32_t, u_int, int));
86void soisfconnecting _P((register struct socket *));
87void soisfconnected _P((register struct socket *));
88void soisfdisconnected _P((struct socket *));
89void sofwdrain _P((struct socket *));
90struct iovec; /* For win32 */
91size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np);
92int soreadbuf(struct socket *so, const char *buf, int size);
93
94#endif /* _SOCKET_H_ */
95