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b57f37fb WP |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * commio-int.h: A header for the network subsystem. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2007 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 | |
22 | * USA | |
23 | * | |
24 | * $Id: commio.h 24059 2007-07-24 17:25:41Z androsyn $ | |
25 | */ | |
26 | ||
27 | ||
28 | #define RB_FD_HASH_BITS 12 | |
29 | #define RB_FD_HASH_SIZE (1UL << RB_FD_HASH_BITS) | |
30 | #define RB_FD_HASH_MASK (RB_FD_HASH_SIZE-1) | |
31 | ||
32 | #define FD_DESC_SZ 128 /* hostlen + comment */ | |
33 | ||
34 | ||
35 | #ifdef WIN32 | |
36 | #define rb_get_errno() do { errno = WSAGetLastError(); WSASetLastError(errno); } while(0) | |
37 | #else | |
38 | #define rb_get_errno() | |
39 | #endif | |
40 | ||
41 | #define rb_hash_fd(x) ((x ^ (x >> RB_FD_HASH_BITS) ^ (x >> (RB_FD_HASH_BITS * 2))) & RB_FD_HASH_MASK) | |
42 | ||
43 | #ifdef HAVE_WRITEV | |
44 | #ifndef UIO_MAXIOV | |
45 | # if defined(__FreeBSD__) || defined(__APPLE__) || defined(__NetBSD__) | |
46 | /* FreeBSD 4.7 defines it in sys/uio.h only if _KERNEL is specified */ | |
47 | # define RB_UIO_MAXIOV 1024 | |
48 | # elif defined(__sgi) | |
49 | /* IRIX 6.5 has sysconf(_SC_IOV_MAX) which might return 512 or bigger */ | |
50 | # define RB_UIO_MAXIOV 512 | |
51 | # elif defined(__sun) | |
52 | /* Solaris (and SunOS?) defines IOV_MAX instead */ | |
53 | # ifndef IOV_MAX | |
54 | # define RB_UIO_MAXIOV 16 | |
55 | # else | |
56 | # define RB_UIO_MAXIOV IOV_MAX | |
57 | # endif | |
58 | ||
59 | # elif defined(IOV_MAX) | |
60 | # define RB_UIO_MAXIOV IOV_MAX | |
61 | # else | |
62 | # define RB_UIO_MAXIOV 16 | |
63 | # endif | |
64 | #else | |
65 | #define RB_UIO_MAXIOV UIO_MAXIOV | |
66 | #endif | |
67 | #else | |
68 | #define RB_UIO_MAXIOV 16 | |
69 | #endif | |
70 | struct conndata | |
71 | { | |
72 | /* We don't need the host here ? */ | |
73 | struct rb_sockaddr_storage S; | |
74 | struct rb_sockaddr_storage hostaddr; | |
75 | time_t t; | |
76 | CNCB *callback; | |
77 | void *data; | |
78 | /* We'd also add the retry count here when we get to that -- adrian */ | |
79 | }; | |
80 | ||
81 | struct acceptdata | |
82 | { | |
83 | struct rb_sockaddr_storage S; | |
84 | rb_socklen_t addrlen; | |
85 | ACCB *callback; | |
86 | ACPRE *precb; | |
87 | void *data; | |
88 | }; | |
89 | ||
90 | /* Only have open flags for now, could be more later */ | |
91 | #define FLAG_OPEN 0x1 | |
92 | #define IsFDOpen(F) (F->flags & FLAG_OPEN) | |
93 | #define SetFDOpen(F) (F->flags |= FLAG_OPEN) | |
94 | #define ClearFDOpen(F) (F->flags &= ~FLAG_OPEN) | |
95 | ||
96 | ||
97 | struct _fde | |
98 | { | |
99 | /* New-school stuff, again pretty much ripped from squid */ | |
100 | /* | |
101 | * Yes, this gives us only one pending read and one pending write per | |
102 | * filedescriptor. Think though: when do you think we'll need more? | |
103 | */ | |
104 | rb_dlink_node node; | |
105 | int fd; /* So we can use the rb_fde_t as a callback ptr */ | |
106 | rb_uint8_t flags; | |
107 | rb_uint8_t type; | |
108 | int pflags; | |
109 | char *desc; | |
110 | PF *read_handler; | |
111 | void *read_data; | |
112 | PF *write_handler; | |
113 | void *write_data; | |
114 | struct timeout_data *timeout; | |
115 | struct conndata *connect; | |
116 | struct acceptdata *accept; | |
117 | void *ssl; | |
118 | unsigned long ssl_errno; | |
119 | }; | |
120 | ||
121 | typedef void (*comm_event_cb_t)(void *); | |
122 | ||
123 | #ifdef USE_TIMER_CREATE | |
124 | typedef struct timer_data { | |
125 | timer_t td_timer_id; | |
126 | comm_event_cb_t td_cb; | |
127 | void *td_udata; | |
128 | int td_repeat; | |
129 | } *comm_event_id; | |
130 | #endif | |
131 | ||
132 | extern rb_dlink_list *rb_fd_table; | |
133 | ||
134 | static inline rb_fde_t * | |
135 | rb_find_fd(int fd) | |
136 | { | |
137 | rb_dlink_list *hlist; | |
138 | rb_dlink_node *ptr; | |
139 | ||
140 | if(unlikely(fd < 0)) | |
141 | return NULL; | |
142 | ||
143 | hlist = &rb_fd_table[rb_hash_fd(fd)]; | |
144 | ||
145 | if(hlist->head == NULL) | |
146 | return NULL; | |
147 | ||
148 | RB_DLINK_FOREACH(ptr, hlist->head) | |
149 | { | |
150 | rb_fde_t *F = ptr->data; | |
151 | if(F->fd == fd) | |
152 | return F; | |
153 | } | |
154 | return NULL; | |
155 | } | |
156 | ||
157 | ||
158 | int rb_setup_fd(rb_fde_t *F); | |
159 | void rb_connect_callback(rb_fde_t *F, int status); | |
160 | ||
161 | ||
162 | int rb_io_sched_event(struct ev_entry *ev, int when); | |
163 | void rb_io_unsched_event(struct ev_entry *ev); | |
164 | int rb_io_supports_event(void); | |
165 | void rb_io_init_event(void); | |
166 | ||
167 | /* epoll versions */ | |
168 | void rb_setselect_epoll(rb_fde_t *F, unsigned int type, PF * handler, void *client_data); | |
169 | int rb_init_netio_epoll(void); | |
170 | int rb_select_epoll(long); | |
171 | int rb_setup_fd_epoll(rb_fde_t *F); | |
172 | ||
173 | void rb_epoll_init_event(void); | |
174 | int rb_epoll_sched_event(struct ev_entry *event, int when); | |
175 | void rb_epoll_unsched_event(struct ev_entry *event); | |
176 | int rb_epoll_supports_event(void); | |
177 | ||
178 | ||
179 | /* poll versions */ | |
180 | void rb_setselect_poll(rb_fde_t *F, unsigned int type, PF * handler, void *client_data); | |
181 | int rb_init_netio_poll(void); | |
182 | int rb_select_poll(long); | |
183 | int rb_setup_fd_poll(rb_fde_t *F); | |
184 | ||
185 | /* devpoll versions */ | |
186 | void rb_setselect_devpoll(rb_fde_t *F, unsigned int type, PF * handler, void *client_data); | |
187 | int rb_init_netio_devpoll(void); | |
188 | int rb_select_devpoll(long); | |
189 | int rb_setup_fd_devpoll(rb_fde_t *F); | |
190 | ||
191 | /* sigio versions */ | |
192 | void rb_setselect_sigio(rb_fde_t *F, unsigned int type, PF * handler, void *client_data); | |
193 | int rb_init_netio_sigio(void); | |
194 | int rb_select_sigio(long); | |
195 | int rb_setup_fd_sigio(rb_fde_t *F); | |
196 | ||
197 | void rb_sigio_init_event(void); | |
198 | int rb_sigio_sched_event(struct ev_entry *event, int when); | |
199 | void rb_sigio_unsched_event(struct ev_entry *event); | |
200 | int rb_sigio_supports_event(void); | |
201 | ||
202 | ||
203 | /* ports versions */ | |
204 | void rb_setselect_ports(rb_fde_t *F, unsigned int type, PF * handler, void *client_data); | |
205 | int rb_init_netio_ports(void); | |
206 | int rb_select_ports(long); | |
207 | int rb_setup_fd_ports(rb_fde_t *F); | |
208 | ||
209 | /* kqueue versions */ | |
210 | void rb_setselect_kqueue(rb_fde_t *F, unsigned int type, PF * handler, void *client_data); | |
211 | int rb_init_netio_kqueue(void); | |
212 | int rb_select_kqueue(long); | |
213 | int rb_setup_fd_kqueue(rb_fde_t *F); | |
214 | ||
215 | void rb_kqueue_init_event(void); | |
216 | int rb_kqueue_sched_event(struct ev_entry *event, int when); | |
217 | void rb_kqueue_unsched_event(struct ev_entry *event); | |
218 | int rb_kqueue_supports_event(void); | |
219 | ||
220 | ||
221 | /* select versions */ | |
222 | void rb_setselect_select(rb_fde_t *F, unsigned int type, PF * handler, void *client_data); | |
223 | int rb_init_netio_select(void); | |
224 | int rb_select_select(long); | |
225 | int rb_setup_fd_select(rb_fde_t *F); | |
226 | ||
227 | /* win32 versions */ | |
228 | void rb_setselect_win32(rb_fde_t *F, unsigned int type, PF * handler, void *client_data); | |
229 | int rb_init_netio_win32(void); | |
230 | int rb_select_win32(long); | |
231 | int rb_setup_fd_win32(rb_fde_t *F); | |
232 |