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718e3744 | 1 | /* Interface related header. |
2 | Copyright (C) 1997, 98, 99 Kunihiro Ishiguro | |
3 | ||
4 | This file is part of GNU Zebra. | |
5 | ||
6 | GNU Zebra is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published | |
8 | by the Free Software Foundation; either version 2, or (at your | |
9 | option) any later version. | |
10 | ||
11 | GNU Zebra is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Zebra; see the file COPYING. If not, write to the | |
18 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #ifndef _ZEBRA_IF_H | |
22 | #define _ZEBRA_IF_H | |
23 | ||
24 | #include "linklist.h" | |
25 | ||
26 | /* | |
27 | Interface name length. | |
28 | ||
29 | Linux define value in /usr/include/linux/if.h. | |
30 | #define IFNAMSIZ 16 | |
31 | ||
32 | FreeBSD define value in /usr/include/net/if.h. | |
33 | #define IFNAMSIZ 16 | |
34 | */ | |
35 | ||
36 | #define INTERFACE_NAMSIZ 20 | |
37 | #define INTERFACE_HWADDR_MAX 20 | |
38 | ||
39 | /* Internal If indexes start at 0xFFFFFFFF and go down to 1 greater | |
40 | than this */ | |
41 | #define IFINDEX_INTERNBASE 0x80000000 | |
42 | ||
43 | #ifdef HAVE_PROC_NET_DEV | |
44 | struct if_stats | |
45 | { | |
46 | unsigned long rx_packets; /* total packets received */ | |
47 | unsigned long tx_packets; /* total packets transmitted */ | |
48 | unsigned long rx_bytes; /* total bytes received */ | |
49 | unsigned long tx_bytes; /* total bytes transmitted */ | |
50 | unsigned long rx_errors; /* bad packets received */ | |
51 | unsigned long tx_errors; /* packet transmit problems */ | |
52 | unsigned long rx_dropped; /* no space in linux buffers */ | |
53 | unsigned long tx_dropped; /* no space available in linux */ | |
54 | unsigned long rx_multicast; /* multicast packets received */ | |
55 | unsigned long rx_compressed; | |
56 | unsigned long tx_compressed; | |
57 | unsigned long collisions; | |
58 | ||
59 | /* detailed rx_errors: */ | |
60 | unsigned long rx_length_errors; | |
61 | unsigned long rx_over_errors; /* receiver ring buff overflow */ | |
62 | unsigned long rx_crc_errors; /* recved pkt with crc error */ | |
63 | unsigned long rx_frame_errors; /* recv'd frame alignment error */ | |
64 | unsigned long rx_fifo_errors; /* recv'r fifo overrun */ | |
65 | unsigned long rx_missed_errors; /* receiver missed packet */ | |
66 | /* detailed tx_errors */ | |
67 | unsigned long tx_aborted_errors; | |
68 | unsigned long tx_carrier_errors; | |
69 | unsigned long tx_fifo_errors; | |
70 | unsigned long tx_heartbeat_errors; | |
71 | unsigned long tx_window_errors; | |
72 | }; | |
73 | #endif /* HAVE_PROC_NET_DEV */ | |
74 | ||
75 | /* Interface structure */ | |
76 | struct interface | |
77 | { | |
78 | /* Interface name. */ | |
79 | char name[INTERFACE_NAMSIZ + 1]; | |
80 | ||
81 | /* Interface index. */ | |
82 | unsigned int ifindex; | |
83 | ||
84 | /* Zebra internal interface status */ | |
85 | u_char status; | |
86 | #define ZEBRA_INTERFACE_ACTIVE (1 << 0) | |
87 | #define ZEBRA_INTERFACE_SUB (1 << 1) | |
2e3b2e47 | 88 | #define ZEBRA_INTERFACE_LINKDETECTION (1 << 2) |
718e3744 | 89 | |
90 | /* Interface flags. */ | |
91 | unsigned long flags; | |
92 | ||
93 | /* Interface metric */ | |
94 | int metric; | |
95 | ||
96 | /* Interface MTU. */ | |
c9eca01b | 97 | unsigned int mtu; /* IPv4 MTU */ |
98 | unsigned int mtu6; /* IPv6 MTU - probably, but not neccessarily same as mtu */ | |
718e3744 | 99 | |
100 | /* Hardware address. */ | |
101 | #ifdef HAVE_SOCKADDR_DL | |
102 | struct sockaddr_dl sdl; | |
103 | #else | |
104 | unsigned short hw_type; | |
105 | u_char hw_addr[INTERFACE_HWADDR_MAX]; | |
106 | int hw_addr_len; | |
107 | #endif /* HAVE_SOCKADDR_DL */ | |
108 | ||
109 | /* interface bandwidth, kbits */ | |
110 | unsigned int bandwidth; | |
111 | ||
112 | /* description of the interface. */ | |
113 | char *desc; | |
114 | ||
115 | /* Distribute list. */ | |
116 | void *distribute_in; | |
117 | void *distribute_out; | |
118 | ||
119 | /* Connected address list. */ | |
52dc7ee6 | 120 | struct list *connected; |
718e3744 | 121 | |
122 | /* Daemon specific interface data pointer. */ | |
123 | void *info; | |
124 | ||
125 | /* Statistics fileds. */ | |
126 | #ifdef HAVE_PROC_NET_DEV | |
127 | struct if_stats stats; | |
128 | #endif /* HAVE_PROC_NET_DEV */ | |
129 | #ifdef HAVE_NET_RT_IFLIST | |
130 | struct if_data stats; | |
131 | #endif /* HAVE_NET_RT_IFLIST */ | |
132 | }; | |
133 | ||
134 | /* Connected address structure. */ | |
135 | struct connected | |
136 | { | |
137 | /* Attached interface. */ | |
138 | struct interface *ifp; | |
139 | ||
140 | /* Flags for configuration. */ | |
141 | u_char conf; | |
142 | #define ZEBRA_IFC_REAL (1 << 0) | |
143 | #define ZEBRA_IFC_CONFIGURED (1 << 1) | |
144 | ||
145 | /* Flags for connected address. */ | |
146 | u_char flags; | |
147 | #define ZEBRA_IFA_SECONDARY (1 << 0) | |
148 | ||
149 | /* Address of connected network. */ | |
150 | struct prefix *address; | |
3fb9cd6e | 151 | struct prefix *destination; /* broadcast or peer address; may be NULL */ |
718e3744 | 152 | |
153 | /* Label for Linux 2.2.X and upper. */ | |
154 | char *label; | |
155 | }; | |
156 | ||
3fb9cd6e | 157 | /* Given an IPV4 struct connected, this macro determines whether a /32 |
158 | peer address has been supplied (i.e. there is no subnet assigned) */ | |
159 | #define CONNECTED_DEST_HOST(C) \ | |
160 | ((C)->destination && ((C)->address->prefixlen == IPV4_MAX_PREFIXLEN)) | |
161 | ||
162 | /* Given an IPV4 struct connected, this macro determins whether it is | |
163 | a point-to-point link with a /32 peer address (i.e. there | |
164 | is no dedicated subnet for the PtP link) */ | |
165 | #define CONNECTED_POINTOPOINT_HOST(C) \ | |
166 | (((C)->ifp->flags & IFF_POINTOPOINT) && CONNECTED_DEST_HOST(C)) | |
167 | ||
718e3744 | 168 | /* Interface hook sort. */ |
169 | #define IF_NEW_HOOK 0 | |
170 | #define IF_DELETE_HOOK 1 | |
171 | ||
172 | /* There are some interface flags which are only supported by some | |
173 | operating system. */ | |
174 | ||
175 | #ifndef IFF_NOTRAILERS | |
176 | #define IFF_NOTRAILERS 0x0 | |
177 | #endif /* IFF_NOTRAILERS */ | |
178 | #ifndef IFF_OACTIVE | |
179 | #define IFF_OACTIVE 0x0 | |
180 | #endif /* IFF_OACTIVE */ | |
181 | #ifndef IFF_SIMPLEX | |
182 | #define IFF_SIMPLEX 0x0 | |
183 | #endif /* IFF_SIMPLEX */ | |
184 | #ifndef IFF_LINK0 | |
185 | #define IFF_LINK0 0x0 | |
186 | #endif /* IFF_LINK0 */ | |
187 | #ifndef IFF_LINK1 | |
188 | #define IFF_LINK1 0x0 | |
189 | #endif /* IFF_LINK1 */ | |
190 | #ifndef IFF_LINK2 | |
191 | #define IFF_LINK2 0x0 | |
192 | #endif /* IFF_LINK2 */ | |
4ba9b924 | 193 | #ifndef IFF_NOXMIT |
194 | #define IFF_NOXMIT 0x0 | |
195 | #endif /* IFF_NOXMIT */ | |
196 | #ifndef IFF_NORTEXCH | |
197 | #define IFF_NORTEXCH 0x0 | |
198 | #endif /* IFF_NORTEXCH */ | |
199 | #ifndef IFF_IPV4 | |
200 | #define IFF_IPV4 0x0 | |
201 | #endif /* IFF_IPV4 */ | |
202 | #ifndef IFF_IPV6 | |
203 | #define IFF_IPV6 0x0 | |
204 | #endif /* IFF_IPV6 */ | |
205 | #ifndef IFF_VIRTUAL | |
206 | #define IFF_VIRTUAL 0x0 | |
207 | #endif /* IFF_VIRTUAL */ | |
718e3744 | 208 | |
209 | /* Prototypes. */ | |
106d2fd5 | 210 | int if_cmp_func (struct interface *, struct interface *); |
718e3744 | 211 | struct interface *if_new (void); |
9035efaa | 212 | struct interface *if_create (const char *name, int namelen); |
718e3744 | 213 | struct interface *if_lookup_by_index (unsigned int); |
9035efaa | 214 | struct interface *if_lookup_by_name (const char *); |
718e3744 | 215 | struct interface *if_lookup_exact_address (struct in_addr); |
216 | struct interface *if_lookup_address (struct in_addr); | |
9035efaa | 217 | struct interface *if_get_by_name (const char *); |
718e3744 | 218 | void if_delete (struct interface *); |
219 | int if_is_up (struct interface *); | |
2e3b2e47 | 220 | int if_is_running (struct interface *); |
221 | int if_is_operative (struct interface *); | |
718e3744 | 222 | int if_is_loopback (struct interface *); |
223 | int if_is_broadcast (struct interface *); | |
224 | int if_is_pointopoint (struct interface *); | |
225 | int if_is_multicast (struct interface *); | |
226 | void if_add_hook (int, int (*)(struct interface *)); | |
227 | void if_init (); | |
228 | void if_dump_all (); | |
229 | char *ifindex2ifname (unsigned int); | |
230 | ||
231 | /* Connected address functions. */ | |
232 | struct connected *connected_new (); | |
233 | void connected_free (struct connected *); | |
234 | void connected_add (struct interface *, struct connected *); | |
4a7aac1b | 235 | struct connected *connected_add_by_prefix (struct interface *, |
236 | struct prefix *, | |
237 | struct prefix *); | |
238 | struct connected *connected_delete_by_prefix (struct interface *, | |
239 | struct prefix *); | |
240 | struct connected *connected_lookup_address (struct interface *, | |
241 | struct in_addr); | |
718e3744 | 242 | |
243 | #ifndef HAVE_IF_NAMETOINDEX | |
244 | unsigned int if_nametoindex (const char *); | |
245 | #endif | |
246 | #ifndef HAVE_IF_INDEXTONAME | |
247 | char *if_indextoname (unsigned int, char *); | |
248 | #endif | |
249 | ||
250 | /* Exported variables. */ | |
52dc7ee6 | 251 | extern struct list *iflist; |
718e3744 | 252 | extern struct cmd_element interface_desc_cmd; |
253 | extern struct cmd_element no_interface_desc_cmd; | |
254 | extern struct cmd_element interface_cmd; | |
32d2463c | 255 | extern struct cmd_element no_interface_cmd; |
718e3744 | 256 | extern struct cmd_element interface_pseudo_cmd; |
257 | extern struct cmd_element no_interface_pseudo_cmd; | |
258 | ||
259 | #endif /* _ZEBRA_IF_H */ |