/* * Copyright (c) 1995 Danny Gasparovski. * * Please read the file COPYRIGHT for the * terms and conditions of the copyright. */ /* MINE */ #ifndef _SLIRP_SOCKET_H_ #define _SLIRP_SOCKET_H_ #define SO_EXPIRE 240000 #define SO_EXPIREFAST 10000 /* * Our socket structure */ struct socket { struct socket *so_next,*so_prev; /* For a linked list of sockets */ int s; /* The actual socket */ /* XXX union these with not-yet-used sbuf params */ struct mbuf *so_m; /* Pointer to the original SYN packet, * for non-blocking connect()'s, and * PING reply's */ struct tcpiphdr *so_ti; /* Pointer to the original ti within * so_mconn, for non-blocking connections */ int so_urgc; struct in_addr so_faddr; /* foreign host table entry */ struct in_addr so_laddr; /* local host table entry */ u_int16_t so_fport; /* foreign port */ u_int16_t so_lport; /* local port */ u_int8_t so_iptos; /* Type of service */ u_int8_t so_emu; /* Is the socket emulated? */ u_char so_type; /* Type of socket, UDP or TCP */ int so_state; /* internal state flags SS_*, below */ struct tcpcb *so_tcpcb; /* pointer to TCP protocol control block */ u_int so_expire; /* When the socket will expire */ int so_queued; /* Number of packets queued from this socket */ int so_nqueued; /* Number of packets queued in a row * Used to determine when to "downgrade" a session * from fastq to batchq */ struct sbuf so_rcv; /* Receive buffer */ struct sbuf so_snd; /* Send buffer */ void * extra; /* Extra pointer */ }; /* * Socket state bits. (peer means the host on the Internet, * local host means the host on the other end of the modem) */ #define SS_NOFDREF 0x001 /* No fd reference */ #define SS_ISFCONNECTING 0x002 /* Socket is connecting to peer (non-blocking connect()'s) */ #define SS_ISFCONNECTED 0x004 /* Socket is connected to peer */ #define SS_FCANTRCVMORE 0x008 /* Socket can't receive more from peer (for half-closes) */ #define SS_FCANTSENDMORE 0x010 /* Socket can't send more to peer (for half-closes) */ /* #define SS_ISFDISCONNECTED 0x020*/ /* Socket has disconnected from peer, in 2MSL state */ #define SS_FWDRAIN 0x040 /* We received a FIN, drain data and set SS_FCANTSENDMORE */ #define SS_CTL 0x080 #define SS_FACCEPTCONN 0x100 /* Socket is accepting connections from a host on the internet */ #define SS_FACCEPTONCE 0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */ extern struct socket tcb; struct socket * solookup _P((struct socket *, struct in_addr, u_int, struct in_addr, u_int)); struct socket * socreate _P((void)); void sofree _P((struct socket *)); int soread _P((struct socket *)); void sorecvoob _P((struct socket *)); int sosendoob _P((struct socket *)); int sowrite _P((struct socket *)); void sorecvfrom _P((struct socket *)); int sosendto _P((struct socket *, struct mbuf *)); struct socket * tcp_listen _P((u_int32_t, u_int, u_int32_t, u_int, int)); void soisfconnecting _P((register struct socket *)); void soisfconnected _P((register struct socket *)); void soisfdisconnected _P((struct socket *)); void sofwdrain _P((struct socket *)); struct iovec; /* For win32 */ size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np); int soreadbuf(struct socket *so, const char *buf, int size); #endif /* _SOCKET_H_ */