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 20 struct socket { 21 struct socket *so_next,*so_prev; /* For a linked list of sockets */ 22 23 SLIRP_SOCKET 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 74 extern struct socket tcb; 75 76 77 #if defined(DECLARE_IOVEC) && !defined(HAVE_READV) 78 struct iovec { 79 char *iov_base; 80 size_t iov_len; 81 }; 82 #endif 83 84 void so_init _P((void)); 85 struct socket * solookup _P((struct socket *, struct in_addr, u_int, struct in_addr, u_int)); 86 struct socket * socreate _P((void)); 87 void sofree _P((struct socket *)); 88 int soread _P((struct socket *)); 89 void sorecvoob _P((struct socket *)); 90 int sosendoob _P((struct socket *)); 91 int sowrite _P((struct socket *)); 92 void sorecvfrom _P((struct socket *)); 93 int sosendto _P((struct socket *, struct mbuf *)); 94 struct socket * solisten _P((u_int, u_int32_t, u_int, int)); 95 void sorwakeup _P((struct socket *)); 96 void sowwakeup _P((struct socket *)); 97 void soisfconnecting _P((register struct socket *)); 98 void soisfconnected _P((register struct socket *)); 99 void sofcantrcvmore _P((struct socket *)); 100 void sofcantsendmore _P((struct socket *)); 101 void soisfdisconnected _P((struct socket *)); 102 void sofwdrain _P((struct socket *)); 103 104 #endif /* _SOCKET_H_ */ 105