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/*
* 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_
#ifdef VBOX_WITH_SLIRP_MT
#include <iprt/critsect.h>
#endif
#define SO_EXPIRE 240000
#define SO_EXPIREFAST 10000
/*
* Our socket structure
*/
struct socket
{
struct socket *so_next;
struct socket *so_prev; /* For a linked list of sockets */
#if !defined(RT_OS_WINDOWS)
int s; /* The actual socket */
#else
union {
int s;
HANDLE sh;
};
uint64_t so_icmp_id; /* XXX: hack */
uint64_t so_icmp_seq; /* XXX: hack */
#endif
/* 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_int16_t so_hlport; /* host local port */
struct in_addr so_hladdr; /* local host addr */
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 */
#ifdef VBOX_WITH_SLIRP_MT
RTCRITSECT so_mutex;
int so_deleted;
#endif
#ifndef RT_OS_WINDOWS
int so_poll_index;
#else /* !RT_OS_WINDOWS */
/*
* FD_CLOSE event has been occurred on socket
*/
int so_close;
#endif /* RT_OS_WINDOWS */
void (* so_timeout)(PNATState pData, struct socket *so, void *arg);
void *so_timeout_arg;
#ifdef VBOX_WITH_NAT_SERVICE
/* storage of source ether address */
unsigned char so_ethaddr[6];
#endif
#ifdef VBOX_WITH_SLIRP_ALIAS
/* required for port-forwarding */
struct libalias *so_la;
#endif
};
#ifdef VBOX_WITH_SLIRP_MT
# define SOCKET_LOCK(so) \
do { \
int rc; \
/* Assert(strcmp(RTThreadSelfName(), "EMT") != 0); */ \
Log2(("lock:%s:%d L on %R[natsock]\n", __FUNCTION__, __LINE__, (so))); \
Assert(!RTCritSectIsOwner(&(so)->so_mutex)); \
rc = RTCritSectEnter(&(so)->so_mutex); \
AssertReleaseRC(rc); \
} while (0)
# define SOCKET_UNLOCK(so) \
do { \
int rc; \
if ((so) != NULL) Log2(("lock:%s:%d U on %R[natsock]\n", __FUNCTION__, __LINE__, (so))); \
rc = RTCritSectLeave(&(so)->so_mutex); \
AssertReleaseRC(rc); \
} while (0)
# define SOCKET_LOCK_CREATE(so) \
do { \
int rc; \
rc = RTCritSectInit(&(so)->so_mutex); \
AssertReleaseRC(rc); \
} while (0)
# define SOCKET_LOCK_DESTROY(so) \
do { \
int rc = RTCritSectDelete(&(so)->so_mutex); \
AssertReleaseRC(rc); \
} while (0)
#else
# define SOCKET_LOCK(so) do {} while (0)
# define SOCKET_UNLOCK(so) do {} while (0)
# define SOCKET_LOCK_CREATE(so) do {} while (0)
# define SOCKET_LOCK_DESTROY(so) do {} while (0)
#endif
/*
* 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;
#if defined(DECLARE_IOVEC) && !defined(HAVE_READV)
struct iovec
{
char *iov_base;
size_t iov_len;
};
#endif
void so_init (void);
struct socket * solookup (struct socket *, struct in_addr, u_int, struct in_addr, u_int);
struct socket * socreate (void);
void sofree (PNATState, struct socket *);
#ifdef VBOX_WITH_SLIRP_MT
void soread_queue (PNATState, struct socket *, int *);
#endif
int soread (PNATState, struct socket *);
void sorecvoob (PNATState, struct socket *);
int sosendoob (struct socket *);
int sowrite (PNATState, struct socket *);
void sorecvfrom (PNATState, struct socket *);
int sosendto (PNATState, struct socket *, struct mbuf *);
struct socket * solisten (PNATState, u_int32_t, u_int, u_int32_t, u_int, int);
void sorwakeup (struct socket *);
void sowwakeup (struct socket *);
void soisfconnecting (register struct socket *);
void soisfconnected (register struct socket *);
void sofcantrcvmore (struct socket *);
void sofcantsendmore (struct socket *);
void soisfdisconnected (struct socket *);
void sofwdrain (struct socket *);
#endif /* _SOCKET_H_ */
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