1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
|
/*
* Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/*
* Copyright (c) 1980, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Kernel resident routing tables.
*
* The routing tables are initialized when interface addresses
* are set by making entries for all directly connected interfaces.
*/
#ifndef _NET_ROUTE_H
#define _NET_ROUTE_H
/* from UCB 8.5 (Berkeley) 2/8/95 */
#include <sys/tsol/label.h>
#include <sys/tsol/label_macro.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* A route consists of a destination address and a reference
* to a routing entry. These are often held by protocols
* in their control blocks, e.g. inpcb.
*/
struct route {
struct rtentry *ro_rt;
struct sockaddr ro_dst;
};
/*
* These numbers are used by reliable protocols for determining
* retransmission behavior and are included in the routing structure.
*
* rmx_rtt and rmx_rttvar are stored as microseconds;
*/
typedef struct rt_metrics {
uint32_t rmx_locks; /* Kernel must leave these values */
/* alone */
uint32_t rmx_mtu; /* MTU for this path */
uint32_t rmx_hopcount; /* max hops expected */
uint32_t rmx_expire; /* lifetime for route, e.g. redirect */
uint32_t rmx_recvpipe; /* inbound delay-bandwith product */
uint32_t rmx_sendpipe; /* outbound delay-bandwith product */
uint32_t rmx_ssthresh; /* outbound gateway buffer limit */
uint32_t rmx_rtt; /* estimated round trip time */
uint32_t rmx_rttvar; /* estimated rtt variance */
uint32_t rmx_pksent; /* packets sent using this route */
} rt_metrics_t;
/*
* OLD rtentry structure not used in the kernel. Instead the kernel
* uses struct ire defined in <inet/ip.h>.
*
* We distinguish between routes to hosts and routes to networks,
* preferring the former if available. For each route we infer
* the interface to use from the gateway address supplied when
* the route was entered. Routes that forward packets through
* gateways are marked so that the output routines know to address the
* gateway rather than the ultimate destination.
*/
struct rtentry {
uint_t rt_hash; /* to speed lookups */
struct sockaddr rt_dst; /* key */
struct sockaddr rt_gateway; /* value */
short rt_flags; /* up/down?, host/net */
short rt_refcnt; /* # held references */
uint_t rt_use; /* raw # packets forwarded */
/*
* The kernel does not use this field, and without it the structure is
* datamodel independent.
*/
#if !defined(_KERNEL)
struct ifnet *rt_ifp; /* the answer: interface to use */
#endif /* !defined(_KERNEL) */
};
#define RTF_UP 0x1 /* route usable */
#define RTF_GATEWAY 0x2 /* destination is a gateway */
#define RTF_HOST 0x4 /* host entry (net otherwise) */
#define RTF_REJECT 0x8 /* host or net unreachable */
#define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */
#define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */
#define RTF_DONE 0x40 /* message confirmed */
#define RTF_MASK 0x80 /* subnet mask present */
#define RTF_CLONING 0x100 /* generate new routes on use */
#define RTF_XRESOLVE 0x200 /* external daemon resolves name */
#define RTF_LLINFO 0x400 /* generated by ARP or ESIS */
#define RTF_STATIC 0x800 /* manually added */
#define RTF_BLACKHOLE 0x1000 /* just discard pkts (during updates) */
#define RTF_PRIVATE 0x2000 /* do not advertise this route */
#define RTF_PROTO2 0x4000 /* protocol specific routing flag */
#define RTF_PROTO1 0x8000 /* protocol specific routing flag */
#define RTF_MULTIRT 0x10000 /* multiroute */
#define RTF_SETSRC 0x20000 /* set default outgoing src address */
#define RTF_INDIRECT 0x40000 /* gateway not directly reachable */
#define RTF_KERNEL 0x80000 /* created by kernel; can't delete */
#define RTF_ZONE 0x100000 /* (NGZ only) route from global zone */
/*
* OLD statistics not used by the kernel. The kernel uses <inet/mib2.h>.
*
* Routing statistics.
*/
struct rtstat {
short rts_badredirect; /* bogus redirect calls */
short rts_dynamic; /* routes created by redirects */
short rts_newgateway; /* routes modified by redirects */
short rts_unreach; /* lookups which failed */
short rts_wildcard; /* lookups satisfied by a wildcard */
};
/*
* Structures for routing messages.
*/
typedef struct rt_msghdr {
ushort_t rtm_msglen; /* to skip over non-understood messages */
uchar_t rtm_version; /* future binary compatibility */
uchar_t rtm_type; /* message type */
ushort_t rtm_index; /* index for associated ifp */
int rtm_flags; /* flags, incl. kern & message, e.g. DONE */
int rtm_addrs; /* bitmask identifying sockaddrs in msg */
pid_t rtm_pid; /* identify sender */
int rtm_seq; /* for sender to identify action */
int rtm_errno; /* why failed */
int rtm_use; /* from rtentry */
uint_t rtm_inits; /* which metrics we are initializing */
struct rt_metrics rtm_rmx; /* metrics themselves */
} rt_msghdr_t;
#define RTM_VERSION 3 /* Up the ante and ignore older versions */
#define RTM_ADD 0x1 /* Add Route */
#define RTM_DELETE 0x2 /* Delete Route */
#define RTM_CHANGE 0x3 /* Change Metrics or flags */
#define RTM_GET 0x4 /* Report Metrics */
#define RTM_LOSING 0x5 /* Kernel Suspects Partitioning */
#define RTM_REDIRECT 0x6 /* Told to use different route */
#define RTM_MISS 0x7 /* Lookup failed on this address */
#define RTM_LOCK 0x8 /* fix specified metrics */
#define RTM_OLDADD 0x9 /* caused by SIOCADDRT */
#define RTM_OLDDEL 0xa /* caused by SIOCDELRT */
#define RTM_RESOLVE 0xb /* req to resolve dst to LL addr */
#define RTM_NEWADDR 0xc /* address being added to iface */
#define RTM_DELADDR 0xd /* address being removed from iface */
#define RTM_IFINFO 0xe /* iface going up/down etc. */
#define RTM_CHGADDR 0xf /* address added/changed (even while down) */
#define RTM_FREEADDR 0x10 /* address removed (even while down) */
#define RTV_MTU 0x1 /* init or lock _mtu */
#define RTV_HOPCOUNT 0x2 /* init or lock _hopcount */
#define RTV_EXPIRE 0x4 /* init or lock _expire */
#define RTV_RPIPE 0x8 /* init or lock _recvpipe */
#define RTV_SPIPE 0x10 /* init or lock _sendpipe */
#define RTV_SSTHRESH 0x20 /* init or lock _ssthresh */
#define RTV_RTT 0x40 /* init or lock _rtt */
#define RTV_RTTVAR 0x80 /* init or lock _rttvar */
/*
* Bitmask values for rtm_addr.
*/
#define RTA_DST 0x1 /* destination sockaddr present */
#define RTA_GATEWAY 0x2 /* gateway sockaddr present */
#define RTA_NETMASK 0x4 /* netmask sockaddr present */
#define RTA_GENMASK 0x8 /* cloning mask sockaddr present */
#define RTA_IFP 0x10 /* interface name sockaddr present */
#define RTA_IFA 0x20 /* interface addr sockaddr present */
#define RTA_AUTHOR 0x40 /* sockaddr for author of redirect */
#define RTA_BRD 0x80 /* for NEWADDR, broadcast or p-p dest addr */
#define RTA_SRC 0x100 /* source sockaddr present */
#define RTA_NUMBITS 9 /* Number of bits used in RTA_* */
/*
* Index offsets for sockaddr_storage array for alternate internal encoding.
* There should be an RTAX_* associated with each RTA_*.
*/
#define RTAX_DST 0
#define RTAX_GATEWAY 1
#define RTAX_NETMASK 2
#define RTAX_GENMASK 3
#define RTAX_IFP 4
#define RTAX_IFA 5
#define RTAX_AUTHOR 6
#define RTAX_BRD 7
#define RTAX_SRC 8
#define RTAX_MAX RTA_NUMBITS /* size of array to allocate */
/*
* Routing socket message extension after sockaddrs.
*/
typedef struct rtm_ext_s {
uint32_t rtmex_type; /* identifier for type of extension */
uint32_t rtmex_len; /* length of this extension */
} rtm_ext_t;
#define RTMEX_GATEWAY_SECATTR 1 /* extension is tsol_rtsecattr */
#define RTMEX_MAX RTMEX_GATEWAY_SECATTR
/*
* Trusted Solaris route security attributes extension.
*/
typedef struct rtsa_s {
uint32_t rtsa_mask; /* see RTSA_* below */
uint32_t rtsa_doi; /* domain of interpretation */
brange_t rtsa_slrange; /* sensitivity label range */
} rtsa_t;
typedef struct tsol_rtsecattr_s {
uint32_t rtsa_cnt; /* number of attributes */
rtsa_t rtsa_attr[1];
} tsol_rtsecattr_t;
#define TSOL_RTSECATTR_SIZE(n) \
(sizeof (tsol_rtsecattr_t) + (((n) - 1) * sizeof (struct rtsa_s)))
#define RTSA_MINSL 0x1 /* minimum sensitivity label is valid */
#define RTSA_MAXSL 0x2 /* maximum sensitivity label is valid */
#define RTSA_DOI 0x4 /* domain of interpretation is valid */
#define RTSA_CIPSO 0x100 /* CIPSO protocol */
#define RTSA_SLRANGE (RTSA_MINSL|RTSA_MAXSL)
/*
* Routing socket options.
*/
#define RT_AWARE 0x0001 /* set awareness of hidden interfaces */
/*
* Supported RT_AWARE values. As a convenience, the bit-values here mirror
* the LIFC_* values.
*/
#define RTAW_DEFAULT 0x0000 /* unaware application */
#define RTAW_UNDER_IPMP 0x0010 /* aware of underlying IPMP interfaces */
#ifdef __cplusplus
}
#endif
#endif /* _NET_ROUTE_H */
|
