| 1 | /*
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| 2 | * Copyright (c) 1995 Danny Gasparovski.
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| 3 | *
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| 4 | * Please read the file COPYRIGHT for the
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| 5 | * terms and conditions of the copyright.
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| 6 | */
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| 7 |
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| 8 | /* MINE */
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| 9 |
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| 10 | #ifndef _SLIRP_SOCKET_H_
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| 11 | #define _SLIRP_SOCKET_H_
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| 12 |
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| 13 | #define SO_EXPIRE 240000
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| 14 | #define SO_EXPIREFAST 10000
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| 15 |
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| 16 | /*
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| 17 | * Our socket structure
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| 18 | */
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| 19 |
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| 20 | struct socket {
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| 21 | struct socket *so_next,*so_prev; /* For a linked list of sockets */
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| 22 |
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| 23 | int s; /* The actual socket */
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| 24 |
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| 25 | /* XXX union these with not-yet-used sbuf params */
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| 26 | struct mbuf *so_m; /* Pointer to the original SYN packet,
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| 27 | * for non-blocking connect()'s, and
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| 28 | * PING reply's */
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| 29 | struct tcpiphdr *so_ti; /* Pointer to the original ti within
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| 30 | * so_mconn, for non-blocking connections */
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| 31 | int so_urgc;
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| 32 | struct in_addr so_faddr; /* foreign host table entry */
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| 33 | struct in_addr so_laddr; /* local host table entry */
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| 34 | u_int16_t so_fport; /* foreign port */
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| 35 | u_int16_t so_lport; /* local port */
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| 36 |
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| 37 | u_int8_t so_iptos; /* Type of service */
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| 38 | u_int8_t so_emu; /* Is the socket emulated? */
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| 39 |
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| 40 | u_char so_type; /* Type of socket, UDP or TCP */
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| 41 | int so_state; /* internal state flags SS_*, below */
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| 42 |
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| 43 | struct tcpcb *so_tcpcb; /* pointer to TCP protocol control block */
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| 44 | u_int so_expire; /* When the socket will expire */
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| 45 |
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| 46 | int so_queued; /* Number of packets queued from this socket */
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| 47 | int so_nqueued; /* Number of packets queued in a row
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| 48 | * Used to determine when to "downgrade" a session
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| 49 | * from fastq to batchq */
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| 50 |
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| 51 | struct sbuf so_rcv; /* Receive buffer */
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| 52 | struct sbuf so_snd; /* Send buffer */
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| 53 | void * extra; /* Extra pointer */
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| 54 | };
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| 55 |
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| 56 |
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| 57 | /*
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| 58 | * Socket state bits. (peer means the host on the Internet,
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| 59 | * local host means the host on the other end of the modem)
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| 60 | */
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| 61 | #define SS_NOFDREF 0x001 /* No fd reference */
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| 62 |
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| 63 | #define SS_ISFCONNECTING 0x002 /* Socket is connecting to peer (non-blocking connect()'s) */
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| 64 | #define SS_ISFCONNECTED 0x004 /* Socket is connected to peer */
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| 65 | #define SS_FCANTRCVMORE 0x008 /* Socket can't receive more from peer (for half-closes) */
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| 66 | #define SS_FCANTSENDMORE 0x010 /* Socket can't send more to peer (for half-closes) */
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| 67 | /* #define SS_ISFDISCONNECTED 0x020*/ /* Socket has disconnected from peer, in 2MSL state */
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| 68 | #define SS_FWDRAIN 0x040 /* We received a FIN, drain data and set SS_FCANTSENDMORE */
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| 69 |
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| 70 | #define SS_CTL 0x080
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| 71 | #define SS_FACCEPTCONN 0x100 /* Socket is accepting connections from a host on the internet */
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| 72 | #define SS_FACCEPTONCE 0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */
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| 73 |
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| 74 | extern struct socket tcb;
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| 75 |
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| 76 |
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| 77 | #if defined(DECLARE_IOVEC) && !defined(HAVE_READV)
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| 78 | struct iovec {
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| 79 | char *iov_base;
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| 80 | size_t iov_len;
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| 81 | };
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| 82 | #endif
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| 83 |
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| 84 | void so_init _P((void));
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| 85 | struct socket * solookup _P((struct socket *, struct in_addr, u_int, struct in_addr, u_int));
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| 86 | struct socket * socreate _P((void));
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| 87 | void sofree _P((PNATState, struct socket *));
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| 88 | int soread _P((PNATState, struct socket *));
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| 89 | void sorecvoob _P((PNATState, struct socket *));
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| 90 | int sosendoob _P((struct socket *));
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| 91 | int sowrite _P((PNATState, struct socket *));
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| 92 | void sorecvfrom _P((PNATState, struct socket *));
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| 93 | int sosendto _P((PNATState, struct socket *, struct mbuf *));
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| 94 | struct socket * solisten _P((PNATState, u_int, u_int32_t, u_int, int));
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| 95 | void sorwakeup _P((struct socket *));
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| 96 | void sowwakeup _P((struct socket *));
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| 97 | void soisfconnecting _P((register struct socket *));
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| 98 | void soisfconnected _P((register struct socket *));
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| 99 | void sofcantrcvmore _P((struct socket *));
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| 100 | void sofcantsendmore _P((struct socket *));
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| 101 | void soisfdisconnected _P((struct socket *));
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| 102 | void sofwdrain _P((struct socket *));
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| 103 |
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| 104 | #endif /* _SOCKET_H_ */
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