244 lines
6.5 KiB
C
244 lines
6.5 KiB
C
/*
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* ircd-ratbox: A slightly useful ircd.
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* commio-int.h: A header for the network subsystem.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2012 ircd-ratbox development team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
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* USA
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*
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* $Id: commio.h 24059 2007-07-24 17:25:41Z androsyn $
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*/
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#ifndef _COMMIO_INT_H
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#define _COMMIO_INT_H 1
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#define RB_FD_HASH_BITS 12
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#define RB_FD_HASH_SIZE (1UL << RB_FD_HASH_BITS)
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#define RB_FD_HASH_MASK (RB_FD_HASH_SIZE-1)
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#define FD_DESC_SZ 128 /* hostlen + comment */
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#ifdef _WIN32
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#define rb_get_errno() do { errno = WSAGetLastError(); WSASetLastError(errno); } while(0)
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#else
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#define rb_get_errno()
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#endif
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#define rb_hash_fd(x) ((x ^ (x >> RB_FD_HASH_BITS) ^ (x >> (RB_FD_HASH_BITS * 2))) & RB_FD_HASH_MASK)
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#ifdef HAVE_WRITEV
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#ifndef UIO_MAXIOV
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# if defined(__FreeBSD__) || defined(__APPLE__) || defined(__NetBSD__)
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/* FreeBSD 4.7 defines it in sys/uio.h only if _KERNEL is specified */
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# define RB_UIO_MAXIOV 1024
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# elif defined(__sgi)
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/* IRIX 6.5 has sysconf(_SC_IOV_MAX) which might return 512 or bigger */
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# define RB_UIO_MAXIOV 512
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# elif defined(__sun)
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/* Solaris (and SunOS?) defines IOV_MAX instead */
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# ifndef IOV_MAX
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# define RB_UIO_MAXIOV 16
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# else
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# define RB_UIO_MAXIOV IOV_MAX
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# endif
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# elif defined(IOV_MAX)
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# define RB_UIO_MAXIOV IOV_MAX
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# else
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# define RB_UIO_MAXIOV 16
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# endif
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#else
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#define RB_UIO_MAXIOV UIO_MAXIOV
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#endif
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#else
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#define RB_UIO_MAXIOV 16
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#endif
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struct conndata
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{
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/* We don't need the host here ? */
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struct rb_sockaddr_storage S;
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struct rb_sockaddr_storage hostaddr;
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time_t t;
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CNCB *callback;
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void *data;
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/* We'd also add the retry count here when we get to that -- adrian */
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};
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struct acceptdata
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{
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struct rb_sockaddr_storage S;
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rb_socklen_t addrlen;
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ACCB *callback;
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ACPRE *precb;
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void *data;
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};
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/* Only have open flags for now, could be more later */
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#define FLAG_OPEN 0x1
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#define IsFDOpen(F) (F->flags & FLAG_OPEN)
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#define SetFDOpen(F) (F->flags |= FLAG_OPEN)
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#define ClearFDOpen(F) (F->flags &= ~FLAG_OPEN)
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struct _fde
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{
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/* New-school stuff, again pretty much ripped from squid */
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/*
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* Yes, this gives us only one pending read and one pending write per
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* filedescriptor. Think though: when do you think we'll need more?
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*/
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rb_dlink_node node;
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int fd; /* So we can use the rb_fde_t as a callback ptr */
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uint8_t flags;
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uint8_t type;
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int pflags;
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char *desc;
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PF *read_handler;
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void *read_data;
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PF *write_handler;
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void *write_data;
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struct timeout_data *timeout;
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struct conndata *connect;
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struct acceptdata *accept;
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void *ssl;
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unsigned int handshake_count;
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unsigned long ssl_errno;
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};
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typedef void (*comm_event_cb_t) (void *);
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#ifdef USE_TIMER_CREATE
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typedef struct timer_data
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{
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timer_t td_timer_id;
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comm_event_cb_t td_cb;
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void *td_udata;
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int td_repeat;
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} *comm_event_id;
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#endif
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extern rb_dlink_list *rb_fd_table;
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static inline __rb_must_check rb_fde_t *
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rb_find_fd(int fd)
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{
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rb_dlink_list *hlist;
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rb_dlink_node *ptr;
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if(rb_unlikely(fd < 0))
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return NULL;
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hlist = &rb_fd_table[rb_hash_fd(fd)];
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if(hlist->head == NULL)
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return NULL;
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RB_DLINK_FOREACH(ptr, hlist->head)
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{
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rb_fde_t *F = ptr->data;
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if(F->fd == fd)
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return F;
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}
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return NULL;
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}
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int rb_setup_fd(rb_fde_t *F);
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void rb_connect_callback(rb_fde_t *F, int status);
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int rb_io_sched_event(struct ev_entry *ev, int when);
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void rb_io_unsched_event(struct ev_entry *ev);
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int rb_io_supports_event(void);
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void rb_io_init_event(void);
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/* epoll versions */
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void rb_setselect_epoll(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
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int rb_init_netio_epoll(void);
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int rb_select_epoll(long);
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int rb_setup_fd_epoll(rb_fde_t *F);
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void rb_epoll_init_event(void);
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int rb_epoll_sched_event(struct ev_entry *event, int when);
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void rb_epoll_unsched_event(struct ev_entry *event);
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int rb_epoll_supports_event(void);
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/* poll versions */
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void rb_setselect_poll(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
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int rb_init_netio_poll(void);
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int rb_select_poll(long);
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int rb_setup_fd_poll(rb_fde_t *F);
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/* devpoll versions */
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void rb_setselect_devpoll(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
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int rb_init_netio_devpoll(void);
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int rb_select_devpoll(long);
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int rb_setup_fd_devpoll(rb_fde_t *F);
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/* sigio versions */
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void rb_setselect_sigio(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
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int rb_init_netio_sigio(void);
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int rb_select_sigio(long);
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int rb_setup_fd_sigio(rb_fde_t *F);
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void rb_sigio_init_event(void);
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int rb_sigio_sched_event(struct ev_entry *event, int when);
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void rb_sigio_unsched_event(struct ev_entry *event);
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int rb_sigio_supports_event(void);
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/* ports versions */
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void rb_setselect_ports(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
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int rb_init_netio_ports(void);
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int rb_select_ports(long);
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int rb_setup_fd_ports(rb_fde_t *F);
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void rb_ports_init_event(void);
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int rb_ports_sched_event(struct ev_entry *event, int when);
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void rb_ports_unsched_event(struct ev_entry *event);
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int rb_ports_supports_event(void);
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/* kqueue versions */
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void rb_setselect_kqueue(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
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int rb_init_netio_kqueue(void);
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int rb_select_kqueue(long);
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int rb_setup_fd_kqueue(rb_fde_t *F);
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void rb_kqueue_init_event(void);
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int rb_kqueue_sched_event(struct ev_entry *event, int when);
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void rb_kqueue_unsched_event(struct ev_entry *event);
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int rb_kqueue_supports_event(void);
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/* select versions */
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void rb_setselect_select(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
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int rb_init_netio_select(void);
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int rb_select_select(long);
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int rb_setup_fd_select(rb_fde_t *F);
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/* win32 versions */
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void rb_setselect_win32(rb_fde_t *F, unsigned int type, PF * handler, void *client_data);
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int rb_init_netio_win32(void);
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int rb_select_win32(long);
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int rb_setup_fd_win32(rb_fde_t *F);
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#endif
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