socketvar.h

vxworks 6.x 的全部头文件

		u_long	sb_mbcnt;
		u_long	sb_mbmax;
		long	sb_lowat;
		short	sb_flags;
		short	sb_timeo;
	} so_rcv, so_snd;
	uid_t	so_uid;		/* XXX */
};

/*
 * Macros for sockets and socket buffering.
 */

/*
 * Do we need to notify the other side when I/O is possible?
 */
#define	sb_notify(sb)	(((sb)->sb_flags & (SB_WAIT | SB_SEL | SB_ASYNC | \
    SB_UPCALL | SB_AIO | SB_KNOTE)) != 0)

/*
 * How much space is there in a socket buffer (so->so_snd or so->so_rcv)?
 * This is problematical if the fields are unsigned, as the space might
 * still be negative (cc > hiwat or mbcnt > mbmax).  Should detect
 * overflow and return 0.  Should use "lmin" but it doesn't exist now.
 */
#define	sbspace(sb) \
    ((long) imin((int)((sb)->sb_hiwat - (sb)->sb_cc), \
	 (int)((sb)->sb_mbmax - (sb)->sb_mbcnt)))

/* do we have to send all at once on a socket? */
#define	sosendallatonce(so) \
    ((so)->so_proto->pr_flags & PR_ATOMIC)

/* can we read something from so? */
#define	soreadable(so) \
    ((so)->so_rcv.sb_cc >= (so)->so_rcv.sb_lowat || \
	((so)->so_state & SS_CANTRCVMORE) || \
	(so)->so_comp.tqh_first || (so)->so_error)

/* can we write something to so? */
#define	sowriteable(so) \
    ((sbspace(&(so)->so_snd) >= (so)->so_snd.sb_lowat && \
	(((so)->so_state&SS_ISCONNECTED) || \
	  ((so)->so_proto->pr_flags&PR_CONNREQUIRED)==0)) || \
     ((so)->so_state & SS_CANTSENDMORE) || \
     (so)->so_error)

/* adjust counters in sb reflecting allocation of m */
#define	sballoc(sb, m) { \
	(sb)->sb_cc += (m)->m_len; \
	(sb)->sb_mbcnt += MSIZE; \
	if ((m)->m_flags & M_EXT) \
		(sb)->sb_mbcnt += (m)->m_extSize; \
}

/* adjust counters in sb reflecting freeing of m */
#define	sbfree(sb, m) { \
	(sb)->sb_cc -= (m)->m_len; \
	(sb)->sb_mbcnt -= MSIZE; \
	if ((m)->m_flags & M_EXT) \
		(sb)->sb_mbcnt -= (m)->m_extSize; \
}

/*
 * WRS-port
 * - changed the parameter in wakeup to sb_Sem
 */

/*
 * Set lock on sockbuf sb; sleep if lock is already held.
 * Unless SB_NOINTR is set on sockbuf, sleep is interruptible.
 * Returns error without lock if sleep is interrupted.
 * Note, atomicity of RMW accesses to sb_flags is guaranteed
 * by splnet lock.
 */

#define sblock(sb, wf) ((sb)->sb_flags & SB_LOCK ? \
		(((wf) == M_WAITOK) ? sb_lock(sb) : EWOULDBLOCK) : \
		(((sb)->sb_flags |= SB_LOCK), 0))

/* release lock on sockbuf sb */
#define	sbunlock(sb) { \
	(sb)->sb_flags &= ~SB_LOCK; \
	if ((sb)->sb_flags & SB_WANT) { \
		(sb)->sb_flags &= ~SB_WANT; \
                wakeup (&(sb)->sb_Sem); \
	} \
}

#define	sorwakeup(so)	do { \
			  if (sb_notify(&(so)->so_rcv)) \
			    sowakeup((so), &(so)->so_rcv, SELREAD); \
			} while (0)

#define	sowwakeup(so)	do { \
			  if (sb_notify(&(so)->so_snd)) \
			    sowakeup((so), &(so)->so_snd, SELWRITE); \
			} while (0)

#ifdef _WRS_KERNEL

/*
 * Macro to add the socket-based VLAN to the m_pkthdr. This is in the
 * _WRS_KERNEL section because it will never be used by user code.
 */
#ifdef SOCKET_VLAN
/* 
 * Keep the vlan in the m_pkthdr in host byte order until it needs to be
 * put into the packet (by the MUX-L2 egress code).
 */
#define SO_VLAN_ADD(m, so) \
			  if ((so)->so_options & SO_VLAN) \
			    { \
			    (m)->m_pkthdr.vlan = (so)->so_vlan; \
			    (m)->m_pkthdr.csum_flags |= (so)->so_vlan_options; \
			    }
#endif /* SOCKET_VLAN */

/*
 * Argument structure for sosetopt et seq.  This is in the _WRS_KERNEL
 * section because it will never be visible to user code.
 */

enum sopt_dir { SOPT_GET, SOPT_SET };
struct sockopt {
	enum	sopt_dir sopt_dir; /* is this a get or a set? */
	int	sopt_level;	/* second arg of [gs]etsockopt */
	int	sopt_name;	/* third arg of [gs]etsockopt */
	void   *sopt_val;	/* fourth arg of [gs]etsockopt */
	size_t	sopt_valsize;	/* (almost) fifth arg of [gs]etsockopt */
	struct	proc *sopt_p;	/* calling process or null if kernel */
};

struct sf_buf {
	SLIST_ENTRY(sf_buf) free_list;	/* list of free buffer slots */
	int		refcnt;		/* reference count */
};

#ifndef VIRTUAL_STACK
extern u_long	sb_max;
extern so_gen_t so_gencnt;
#endif

struct mbuf;
struct sockaddr;
struct stat;
struct uio;

/*
 * File operations on sockets.
 */

/* WRS-port
 * - The read, write, close, poll, stat and filter ops are not needed.
 * These will be implemented in the front end sockLib library
 * - Ioctl is the only one that we will retain. However, we change it's 
 * prototype to eliminate file struct and use a socket struct. 
 * - We also change the last argument to a void pointer instead of struct proc
 */

int	soo_ioctl __P((struct socket *so, u_long cmd, caddr_t data,
	                                                   void *p));
/* 
 * WRS-port
 * WRS extensions 
 */

extern int soo_select (struct socket *so, SEL_WAKEUP_NODE *wakeupNode);
extern int soo_unselect (struct socket *so, SEL_WAKEUP_NODE *wakeupNode);
extern STATUS unixIoctlMemValidate (unsigned int cmd, const void * pData);


/*
 * From uipc_socket and friends
 */
struct	sockaddr *dup_sockaddr __P((struct sockaddr *sa, int canwait));

/* Clarinet */
void    getaddrfromsockbuf (struct sockaddr * saFromSock, 
                                            struct sockaddr * saFromApp);
int	sockargs __P((struct mbuf **mp, caddr_t buf, int buflen, int type));
int	getsockaddr __P((struct sockaddr **namp, caddr_t uaddr, size_t len));
void	sbappend __P((struct sockbuf *sb, struct mbuf *m));
int	sbappendaddr __P((struct sockbuf *sb, struct sockaddr *asa,
	    struct mbuf *m0, struct mbuf *control));
int	sbappendcontrol __P((struct sockbuf *sb, struct mbuf *m0,
	    struct mbuf *control));
void	sbappendrecord __P((struct sockbuf *sb, struct mbuf *m0));
void	sbcheck __P((struct sockbuf *sb));
void	sbcompress __P((struct sockbuf *sb, struct mbuf *m, struct mbuf *n));
struct mbuf *
	sbcreatecontrol __P((caddr_t p, int size, int type, int level));
void	sbdrop __P((struct sockbuf *sb, int len));
void	sbdroprecord __P((struct sockbuf *sb));
void	sbflush __P((struct sockbuf *sb));
void	sbinsertoob __P((struct sockbuf *sb, struct mbuf *m0));
void	sbrelease __P((struct sockbuf *sb, struct socket *so));
int	sbreserve __P((struct sockbuf *sb, u_long cc, struct socket *so,
		       struct proc *p));

int	sbwait __P((struct sockbuf *sb));
int	sb_lock __P((struct sockbuf *sb));
struct sf_buf *
	sf_buf_alloc(void);
void	sf_buf_free(caddr_t addr, u_int size);
void	sf_buf_ref(caddr_t addr, u_int size);
int	soabort __P((struct socket *so));
int	soaccept __P((struct socket *so, struct sockaddr **nam));
struct	socket *soalloc __P((int waitok));
int	sobind __P((struct socket *so, struct sockaddr *nam, struct proc *p));
void	socantrcvmore __P((struct socket *so));
void	socantsendmore __P((struct socket *so));
int	soclose __P((struct socket *so));
int	soconnect __P((struct socket *so, struct sockaddr *nam, struct proc *p));
int	soconnect2 __P((struct socket *so1, struct socket *so2));
int	socreate __P((int dom, struct socket **aso, int type, int proto,
	    struct proc *p));
void	sodealloc __P((struct socket *so));
int	sodisconnect __P((struct socket *so));
void	sofree __P((struct socket *so));
int	sogetopt __P((struct socket *so, struct sockopt *sopt));
void	sohasoutofband __P((struct socket *so));
void	soisconnected __P((struct socket *so));
void	soisconnecting __P((struct socket *so));
void	soisdisconnected __P((struct socket *so));
void	soisdisconnecting __P((struct socket *so));
int	solisten __P((struct socket *so, int backlog, struct proc *p));
struct socket *
	sonewconn __P((struct socket *head, int connstatus));
struct socket *
	sonewconn3 __P((struct socket *head, int connstatus, struct proc *p));
int	sooptcopyin __P((struct sockopt *sopt, void *buf, size_t len,
			 size_t minlen));
int	sooptcopyout __P((struct sockopt *sopt, void *buf, size_t len));

/* XXX; prepare mbuf for (__FreeBSD__ < 3) routines. */
int	soopt_getm __P((struct sockopt *sopt, struct mbuf **mp));
int	soopt_mcopyin __P((struct sockopt *sopt, struct mbuf *m));
int	soopt_mcopyout __P((struct sockopt *sopt, struct mbuf *m));

int	sopoll __P((struct socket *so, int events, struct ucred *cred,
		    struct proc *p));
int	soreceive __P((struct socket *so, struct sockaddr **paddr,
		       struct uio *uio, struct mbuf **mp0,
		       struct mbuf **controlp, int *flagsp));
int	soreserve __P((struct socket *so, u_long sndcc, u_long rcvcc));
void	sorflush __P((struct socket *so));
int	sosend __P((struct socket *so, struct sockaddr *addr, struct uio *uio,
		    struct mbuf *top, struct mbuf *control, int flags,
		    struct proc *p));
int	sosetopt __P((struct socket *so, struct sockopt *sopt));
int	soshutdown __P((struct socket *so, int how));
void	sotoxsocket __P((struct socket *so, struct xsocket *xso));

void	sowakeup __P((struct socket *so, struct sockbuf *sb, 
                                         SELECT_TYPE wakeupType));
void    sbwakeup(struct socket *so, struct sockbuf *sb,
                                           SELECT_TYPE wakeupType);

#endif /* _WRS_KERNEL */

#ifdef __cplusplus
}
#endif

#endif /* !_SYS_SOCKETVAR_H_ */