socketvar.h

ecos下的gui开发源代码

/* 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_ext.ext_size; \
}

/* 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_ext.ext_size; \
}

/*
 * 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.
 */
#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((caddr_t)&(sb)->sb_flags); \
	} \
}

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

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

#ifdef _KERNEL

/*
 * Argument structure for sosetopt et seq.  This is in the 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 */
	struct		vm_page *m;	/* currently mapped page */
	vm_offset_t	kva;		/* va of mapping */
};

struct accept_filter {
	char	accf_name[16];
	void	(*accf_callback)
		__P((struct socket *so, void *arg, int waitflag));
	void *	(*accf_create)
		__P((struct socket *so, char *arg));
	void	(*accf_destroy)
		__P((struct socket *so));
	SLIST_ENTRY(accept_filter) accf_next;	/* next on the list */
};

#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_PCB);
MALLOC_DECLARE(M_SONAME);
MALLOC_DECLARE(M_ACCF);
#endif

extern int	maxsockets;
extern u_long	sb_max;
extern struct	vm_zone *socket_zone;
extern so_gen_t so_gencnt;

struct file;
struct filedesc;
struct mbuf;
struct sockaddr;
struct stat;
struct ucred;
struct uio;
struct knote;

/*
 * File operations on sockets.
 */
int	soo_read __P((struct file *fp, struct uio *uio, struct ucred *cred,
	    int flags, struct proc *p));
int	soo_write __P((struct file *fp, struct uio *uio, struct ucred *cred,
	    int flags, struct proc *p));
int	soo_close __P((struct file *fp, struct proc *p));
int	soo_ioctl __P((struct file *fp, u_long cmd, caddr_t data,
	    struct proc *p));
int	soo_poll __P((struct file *fp, int events, struct ucred *cred,
	    struct proc *p));
int	soo_stat __P((struct file *fp, struct stat *ub, struct proc *p));
int	sokqfilter __P((struct file *fp, struct knote *kn));

/*
 * From uipc_socket and friends
 */
struct	sockaddr *dup_sockaddr __P((struct sockaddr *sa, int canwait));
int	holdsock __P((struct filedesc *fdp, int fdes, struct file **fpp));
int	sockargs __P((struct mbuf **mp, caddr_t buf, int buflen, int type));
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));
void	sbtoxsockbuf __P((struct sockbuf *sb, struct xsockbuf *xsb));
int	sbwait __P((struct sockbuf *sb));
int	sb_lock __P((struct sockbuf *sb));
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 *
	sodropablereq __P((struct socket *head));
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));

/* accept filter functions */
int	accept_filt_add __P((struct accept_filter *filt));
int	accept_filt_del __P((char *name));
struct accept_filter *	accept_filt_get __P((char *name));
#ifdef ACCEPT_FILTER_MOD
int accept_filt_generic_mod_event __P((module_t mod, int event, void *data));
SYSCTL_DECL(_net_inet_accf);
#endif /* ACCEPT_FILTER_MOD */

#endif /* _KERNEL */

#endif /* !_SYS_SOCKETVAR_H_ */