linux-user: stack_base is now mandatory on all targets
[qemu.git] / slirp / socket.h
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 #ifndef _SLIRP_SOCKET_H_
9 #define _SLIRP_SOCKET_H_
10
11 #define SO_EXPIRE 240000
12 #define SO_EXPIREFAST 10000
13
14 /*
15 * Our socket structure
16 */
17
18 struct socket {
19 struct socket *so_next,*so_prev; /* For a linked list of sockets */
20
21 int s; /* The actual socket */
22
23 Slirp *slirp; /* managing slirp instance */
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 uint16_t so_fport; /* foreign port */
35 uint16_t so_lport; /* local port */
36
37 uint8_t so_iptos; /* Type of service */
38 uint8_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_FWDRAIN 0x040 /* We received a FIN, drain data and set SS_FCANTSENDMORE */
68
69 #define SS_CTL 0x080
70 #define SS_FACCEPTCONN 0x100 /* Socket is accepting connections from a host on the internet */
71 #define SS_FACCEPTONCE 0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */
72
73 #define SS_PERSISTENT_MASK 0xf000 /* Unremovable state bits */
74 #define SS_HOSTFWD 0x1000 /* Socket describes host->guest forwarding */
75 #define SS_INCOMING 0x2000 /* Connection was initiated by a host on the internet */
76
77 struct socket * solookup(struct socket *, struct in_addr, u_int, struct in_addr, u_int);
78 struct socket * socreate(Slirp *);
79 void sofree(struct socket *);
80 int soread(struct socket *);
81 void sorecvoob(struct socket *);
82 int sosendoob(struct socket *);
83 int sowrite(struct socket *);
84 void sorecvfrom(struct socket *);
85 int sosendto(struct socket *, struct mbuf *);
86 struct socket * tcp_listen(Slirp *, uint32_t, u_int, uint32_t, u_int,
87 int);
88 void soisfconnecting(register struct socket *);
89 void soisfconnected(register struct socket *);
90 void sofwdrain(struct socket *);
91 struct iovec; /* For win32 */
92 size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np);
93 int soreadbuf(struct socket *so, const char *buf, int size);
94
95 #endif /* _SOCKET_H_ */