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 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 uint32_t so_faddr_ip; 33 uint32_t so_laddr_ip; 34 uint16_t so_faddr_port; 35 uint16_t so_laddr_port; 36 uint16_t so_haddr_port; 37 38 u_int8_t so_iptos; /* Type of service */ 39 u_int8_t so_emu; /* Is the socket emulated? */ 40 41 u_char so_type; /* Type of socket, UDP or TCP */ 42 int so_state; /* internal state flags SS_*, below */ 43 44 struct tcpcb *so_tcpcb; /* pointer to TCP protocol control block */ 45 u_int so_expire; /* When the socket will expire */ 46 47 int so_queued; /* Number of packets queued from this socket */ 48 int so_nqueued; /* Number of packets queued in a row 49 * Used to determine when to "downgrade" a session 50 * from fastq to batchq */ 51 52 struct sbuf so_rcv; /* Receive buffer */ 53 struct sbuf so_snd; /* Send buffer */ 54 void * extra; /* Extra pointer */ 55 }; 56 57 58 /* 59 * Socket state bits. (peer means the host on the Internet, 60 * local host means the host on the other end of the modem) 61 */ 62 #define SS_NOFDREF 0x001 /* No fd reference */ 63 64 #define SS_ISFCONNECTING 0x002 /* Socket is connecting to peer (non-blocking connect()'s) */ 65 #define SS_ISFCONNECTED 0x004 /* Socket is connected to peer */ 66 #define SS_FCANTRCVMORE 0x008 /* Socket can't receive more from peer (for half-closes) */ 67 #define SS_FCANTSENDMORE 0x010 /* Socket can't send more to peer (for half-closes) */ 68 /* #define SS_ISFDISCONNECTED 0x020*/ /* Socket has disconnected from peer, in 2MSL state */ 69 #define SS_FWDRAIN 0x040 /* We received a FIN, drain data and set SS_FCANTSENDMORE */ 70 71 #define SS_CTL 0x080 72 #define SS_FACCEPTCONN 0x100 /* Socket is accepting connections from a host on the internet */ 73 #define SS_FACCEPTONCE 0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */ 74 #define SS_PROXIFIED 0x400 /* Socket is trying to connect through a proxy, only makes sense 75 when SS_ISFCONNECTING is also set */ 76 77 extern struct socket tcb; 78 79 void so_init _P((void)); 80 struct socket * solookup _P((struct socket *, uint32_t, u_int, uint32_t, u_int)); 81 struct socket * socreate _P((void)); 82 void sofree _P((struct socket *)); 83 int soread _P((struct socket *)); 84 void sorecvoob _P((struct socket *)); 85 int sosendoob _P((struct socket *)); 86 int sowrite _P((struct socket *)); 87 void sorecvfrom _P((struct socket *)); 88 int sosendto _P((struct socket *, struct mbuf *)); 89 struct socket * solisten _P((u_int, u_int32_t, u_int, int)); 90 int sounlisten _P((u_int port)); 91 void soisfconnecting _P((register struct socket *)); 92 void soisfconnected _P((register struct socket *)); 93 void soisfdisconnected _P((struct socket *)); 94 void sofwdrain _P((struct socket *)); 95 struct iovec; /* For win32 */ 96 size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np); 97 int soreadbuf(struct socket *so, const char *buf, int size); 98 99 #endif /* _SOCKET_H_ */ 100
