elemental-ircd/libratbox/include/commio-int.h

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/*
* ircd-ratbox: A slightly useful ircd.
* commio-int.h: A header for the network subsystem.
*
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
* Copyright (C) 1996-2002 Hybrid Development Team
* Copyright (C) 2002-2007 ircd-ratbox development team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*
*/
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#ifndef _COMMIO_INT_H
#define _COMMIO_INT_H 1
#define RB_FD_HASH_BITS 12
#define RB_FD_HASH_SIZE (1UL << RB_FD_HASH_BITS)
#define RB_FD_HASH_MASK (RB_FD_HASH_SIZE-1)
#define FD_DESC_SZ 128 /* hostlen + comment */
#ifdef _WIN32
#define rb_get_errno() do { errno = WSAGetLastError(); WSASetLastError(errno); } while(0)
#else
#define rb_get_errno()
#endif
#define rb_hash_fd(x) ((x ^ (x >> RB_FD_HASH_BITS) ^ (x >> (RB_FD_HASH_BITS * 2))) & RB_FD_HASH_MASK)
#ifdef HAVE_WRITEV
#ifndef UIO_MAXIOV
# if defined(__FreeBSD__) || defined(__APPLE__) || defined(__NetBSD__)
/* FreeBSD 4.7 defines it in sys/uio.h only if _KERNEL is specified */
# define RB_UIO_MAXIOV 1024
# elif defined(__sgi)
/* IRIX 6.5 has sysconf(_SC_IOV_MAX) which might return 512 or bigger */
# define RB_UIO_MAXIOV 512
# elif defined(__sun)
/* Solaris (and SunOS?) defines IOV_MAX instead */
# ifndef IOV_MAX
# define RB_UIO_MAXIOV 16
# else
# define RB_UIO_MAXIOV IOV_MAX
# endif
# elif defined(IOV_MAX)
# define RB_UIO_MAXIOV IOV_MAX
# else
# define RB_UIO_MAXIOV 16
# endif
#else
#define RB_UIO_MAXIOV UIO_MAXIOV
#endif
#else
#define RB_UIO_MAXIOV 16
#endif
struct conndata
{
/* We don't need the host here ? */
struct rb_sockaddr_storage S;
struct rb_sockaddr_storage hostaddr;
time_t t;
CNCB *callback;
void *data;
/* We'd also add the retry count here when we get to that -- adrian */
};
struct acceptdata
{
struct rb_sockaddr_storage S;
rb_socklen_t addrlen;
ACCB *callback;
ACPRE *precb;
void *data;
};
/* Only have open flags for now, could be more later */
#define FLAG_OPEN 0x1
#define IsFDOpen(F) (F->flags & FLAG_OPEN)
#define SetFDOpen(F) (F->flags |= FLAG_OPEN)
#define ClearFDOpen(F) (F->flags &= ~FLAG_OPEN)
struct _fde
{
/* New-school stuff, again pretty much ripped from squid */
/*
* Yes, this gives us only one pending read and one pending write per
* filedescriptor. Think though: when do you think we'll need more?
*/
rb_dlink_node node;
int fd; /* So we can use the rb_fde_t as a callback ptr */
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uint8_t flags;
uint8_t type;
int pflags;
char *desc;
PF *read_handler;
void *read_data;
PF *write_handler;
void *write_data;
struct timeout_data *timeout;
struct conndata *connect;
struct acceptdata *accept;
void *ssl;
unsigned int handshake_count;
unsigned long ssl_errno;
};
typedef void (*comm_event_cb_t) (void *);
#ifdef USE_TIMER_CREATE
typedef struct timer_data
{
timer_t td_timer_id;
comm_event_cb_t td_cb;
void *td_udata;
int td_repeat;
} *comm_event_id;
#endif
extern rb_dlink_list *rb_fd_table;
static inline rb_fde_t *
rb_find_fd(int fd)
{
rb_dlink_list *hlist;
rb_dlink_node *ptr;
if(rb_unlikely(fd < 0))
return NULL;
hlist = &rb_fd_table[rb_hash_fd(fd)];
if(hlist->head == NULL)
return NULL;
RB_DLINK_FOREACH(ptr, hlist->head)
{
rb_fde_t *F = ptr->data;
if(F->fd == fd)
return F;
}
return NULL;
}
int rb_setup_fd(rb_fde_t *F);
void rb_connect_callback(rb_fde_t *F, int status);
int rb_io_sched_event(struct ev_entry *ev, int when);
void rb_io_unsched_event(struct ev_entry *ev);
int rb_io_supports_event(void);
void rb_io_init_event(void);
/* epoll versions */
void rb_setselect_epoll(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
int rb_init_netio_epoll(void);
int rb_select_epoll(long);
int rb_setup_fd_epoll(rb_fde_t *F);
void rb_epoll_init_event(void);
int rb_epoll_sched_event(struct ev_entry *event, int when);
void rb_epoll_unsched_event(struct ev_entry *event);
int rb_epoll_supports_event(void);
/* poll versions */
void rb_setselect_poll(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
int rb_init_netio_poll(void);
int rb_select_poll(long);
int rb_setup_fd_poll(rb_fde_t *F);
/* devpoll versions */
void rb_setselect_devpoll(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
int rb_init_netio_devpoll(void);
int rb_select_devpoll(long);
int rb_setup_fd_devpoll(rb_fde_t *F);
/* sigio versions */
void rb_setselect_sigio(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
int rb_init_netio_sigio(void);
int rb_select_sigio(long);
int rb_setup_fd_sigio(rb_fde_t *F);
void rb_sigio_init_event(void);
int rb_sigio_sched_event(struct ev_entry *event, int when);
void rb_sigio_unsched_event(struct ev_entry *event);
int rb_sigio_supports_event(void);
/* ports versions */
void rb_setselect_ports(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
int rb_init_netio_ports(void);
int rb_select_ports(long);
int rb_setup_fd_ports(rb_fde_t *F);
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void rb_ports_init_event(void);
int rb_ports_sched_event(struct ev_entry *event, int when);
void rb_ports_unsched_event(struct ev_entry *event);
int rb_ports_supports_event(void);
/* kqueue versions */
void rb_setselect_kqueue(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
int rb_init_netio_kqueue(void);
int rb_select_kqueue(long);
int rb_setup_fd_kqueue(rb_fde_t *F);
void rb_kqueue_init_event(void);
int rb_kqueue_sched_event(struct ev_entry *event, int when);
void rb_kqueue_unsched_event(struct ev_entry *event);
int rb_kqueue_supports_event(void);
/* select versions */
void rb_setselect_select(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
int rb_init_netio_select(void);
int rb_select_select(long);
int rb_setup_fd_select(rb_fde_t *F);
/* win32 versions */
void rb_setselect_win32(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
int rb_init_netio_win32(void);
int rb_select_win32(long);
int rb_setup_fd_win32(rb_fde_t *F);
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#endif