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1
2 /*
3  * ng_bridge.h
4  *
5  * Copyright (c) 2000 Whistle Communications, Inc.
6  * All rights reserved.
7  * 
8  * Subject to the following obligations and disclaimer of warranty, use and
9  * redistribution of this software, in source or object code forms, with or
10  * without modifications are expressly permitted by Whistle Communications;
11  * provided, however, that:
12  * 1. Any and all reproductions of the source or object code must include the
13  *    copyright notice above and the following disclaimer of warranties; and
14  * 2. No rights are granted, in any manner or form, to use Whistle
15  *    Communications, Inc. trademarks, including the mark "WHISTLE
16  *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
17  *    such appears in the above copyright notice or in the software.
18  * 
19  * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
20  * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
21  * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
22  * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
23  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
24  * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
25  * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
26  * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
27  * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
28  * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
29  * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
30  * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
31  * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
32  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34  * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35  * OF SUCH DAMAGE.
36  *
37  * Author: Archie Cobbs <archie@freebsd.org>
38  *
39  * $FreeBSD$
40  */
41
42 #ifndef _NETGRAPH_NG_BRIDGE_H_
43 #define _NETGRAPH_NG_BRIDGE_H_
44
45 /* Node type name and magic cookie */
46 #define NG_BRIDGE_NODE_TYPE             "bridge"
47 #define NGM_BRIDGE_COOKIE               967239368
48
49 /* Hook names */
50 #define NG_BRIDGE_HOOK_LINK_PREFIX      "link"   /* append decimal integer */
51 #define NG_BRIDGE_HOOK_LINK_FMT         "link%d" /* for use with printf(3) */
52
53 /* Maximum number of supported links */
54 #define NG_BRIDGE_MAX_LINKS             32
55
56 /* Node configuration structure */
57 struct ng_bridge_config {
58         u_char          ipfw[NG_BRIDGE_MAX_LINKS];      /* enable ipfw */
59         u_char          debugLevel;             /* debug level */
60         u_int32_t       loopTimeout;            /* link loopback mute time */
61         u_int32_t       maxStaleness;           /* max host age before nuking */
62         u_int32_t       minStableAge;           /* min time for a stable host */
63 };
64
65 /* Keep this in sync with the above structure definition */
66 #define NG_BRIDGE_CONFIG_TYPE_INFO(ainfo)       {               \
67           { "ipfw",             (ainfo)                 },      \
68           { "debugLevel",       &ng_parse_uint8_type    },      \
69           { "loopTimeout",      &ng_parse_uint32_type   },      \
70           { "maxStaleness",     &ng_parse_uint32_type   },      \
71           { "minStableAge",     &ng_parse_uint32_type   },      \
72           { NULL }                                              \
73 }
74
75 /* Statistics structure (one for each link) */
76 struct ng_bridge_link_stats {
77         u_int64_t       recvOctets;     /* total octets rec'd on link */
78         u_int64_t       recvPackets;    /* total pkts rec'd on link */
79         u_int64_t       recvMulticasts; /* multicast pkts rec'd on link */
80         u_int64_t       recvBroadcasts; /* broadcast pkts rec'd on link */
81         u_int64_t       recvUnknown;    /* pkts rec'd with unknown dest addr */
82         u_int64_t       recvRunts;      /* pkts rec'd less than 14 bytes */
83         u_int64_t       recvInvalid;    /* pkts rec'd with bogus source addr */
84         u_int64_t       xmitOctets;     /* total octets xmit'd on link */
85         u_int64_t       xmitPackets;    /* total pkts xmit'd on link */
86         u_int64_t       xmitMulticasts; /* multicast pkts xmit'd on link */
87         u_int64_t       xmitBroadcasts; /* broadcast pkts xmit'd on link */
88         u_int64_t       loopDrops;      /* pkts dropped due to loopback */
89         u_int64_t       loopDetects;    /* number of loop detections */
90         u_int64_t       memoryFailures; /* times couldn't get mem or mbuf */
91 };
92
93 /* Keep this in sync with the above structure definition */
94 #define NG_BRIDGE_STATS_TYPE_INFO       {                       \
95           { "recvOctets",       &ng_parse_uint64_type   },      \
96           { "recvPackets",      &ng_parse_uint64_type   },      \
97           { "recvMulticast",    &ng_parse_uint64_type   },      \
98           { "recvBroadcast",    &ng_parse_uint64_type   },      \
99           { "recvUnknown",      &ng_parse_uint64_type   },      \
100           { "recvRunts",        &ng_parse_uint64_type   },      \
101           { "recvInvalid",      &ng_parse_uint64_type   },      \
102           { "xmitOctets",       &ng_parse_uint64_type   },      \
103           { "xmitPackets",      &ng_parse_uint64_type   },      \
104           { "xmitMulticasts",   &ng_parse_uint64_type   },      \
105           { "xmitBroadcasts",   &ng_parse_uint64_type   },      \
106           { "loopDrops",        &ng_parse_uint64_type   },      \
107           { "loopDetects",      &ng_parse_uint64_type   },      \
108           { "memoryFailures",   &ng_parse_uint64_type   },      \
109           { NULL }                                              \
110 }
111
112 /* Structure describing a single host */
113 struct ng_bridge_host {
114         u_char          addr[6];        /* ethernet address */
115         u_int16_t       linkNum;        /* link where addr can be found */
116         u_int16_t       age;            /* seconds ago entry was created */
117         u_int16_t       staleness;      /* seconds ago host last heard from */
118 };
119
120 /* Keep this in sync with the above structure definition */
121 #define NG_BRIDGE_HOST_TYPE_INFO(entype)        {               \
122           { "addr",             (entype)                },      \
123           { "linkNum",          &ng_parse_uint16_type   },      \
124           { "age",              &ng_parse_uint16_type   },      \
125           { "staleness",        &ng_parse_uint16_type   },      \
126           { NULL }                                              \
127 }
128
129 /* Structure returned by NGM_BRIDGE_GET_TABLE */
130 struct ng_bridge_host_ary {
131         u_int32_t               numHosts;
132         struct ng_bridge_host   hosts[0];
133 };
134
135 /* Keep this in sync with the above structure definition */
136 #define NG_BRIDGE_HOST_ARY_TYPE_INFO(harytype)  {               \
137           { "numHosts",         &ng_parse_uint32_type   },      \
138           { "hosts",            (harytype)              },      \
139           { NULL }                                              \
140 }
141
142 /* Netgraph control messages */
143 enum {
144         NGM_BRIDGE_SET_CONFIG = 1,      /* set node configuration */
145         NGM_BRIDGE_GET_CONFIG,          /* get node configuration */
146         NGM_BRIDGE_RESET,               /* reset (forget) all information */
147         NGM_BRIDGE_GET_STATS,           /* get link stats */
148         NGM_BRIDGE_CLR_STATS,           /* clear link stats */
149         NGM_BRIDGE_GETCLR_STATS,        /* atomically get & clear link stats */
150         NGM_BRIDGE_GET_TABLE,           /* get link table */
151 };
152
153 #endif /* _NETGRAPH_NG_BRIDGE_H_ */
154