Commit | Line | Data |
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e0a3d4f9 | 1 | /* defs.h 4.10 82/06/10 */ |
b242391c SL |
2 | |
3 | /* | |
4 | * Internal data structure definitions for | |
5 | * user routing process. Based on Xerox NS | |
6 | * protocol specs with mods relevant to more | |
7 | * general addressing scheme. | |
8 | */ | |
3cec0c76 | 9 | #include <net/route.h> |
b242391c | 10 | |
e0a3d4f9 SL |
11 | /* |
12 | * An ``interface'' is similar to an ifnet structure, | |
13 | * except it doesn't contain q'ing info, and it also | |
14 | * handles ``logical'' interfaces (remote gateways | |
15 | * that we want to keep polling even if they go down). | |
16 | * The list of interfaces which we maintain is used | |
17 | * in supplying the gratuitous routing table updates. | |
18 | */ | |
19 | struct interface { | |
20 | struct interface *int_next; | |
21 | struct sockaddr int_addr; /* address on this host */ | |
22 | union { | |
23 | struct sockaddr intu_broadaddr; | |
24 | struct sockaddr intu_dstaddr; | |
25 | } int_intu; | |
26 | #define int_broadaddr int_intu.intu_broadaddr /* broadcast address */ | |
27 | #define int_dstaddr int_intu.intu_dstaddr /* other end of p-to-p link */ | |
28 | int int_metric; /* init's routing entry */ | |
29 | int int_flags; /* see below */ | |
30 | int int_net; /* network # */ | |
31 | }; | |
32 | ||
33 | /* | |
34 | * 0x1 to 0x10 are reused from the kernel's ifnet definitions, | |
35 | * the others agree with the RTS_ flags defined below | |
36 | */ | |
37 | #define IFF_UP 0x1 /* interface is up */ | |
38 | #define IFF_BROADCAST 0x2 /* broadcast address valid */ | |
39 | #define IFF_DEBUG 0x4 /* turn on debugging */ | |
40 | #define IFF_ROUTE 0x8 /* routing entry installed */ | |
41 | #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ | |
42 | #define IFF_PASSIVE 0x20 /* can't tell if up/down */ | |
43 | #define IFF_INTERFACE 0x40 /* hardware interface */ | |
44 | #define IFF_REMOTE 0x80 /* interface isn't on this machine */ | |
45 | ||
b242391c | 46 | /* |
e6b5ed24 SL |
47 | * Routing table structure; differs a bit from kernel tables. |
48 | * | |
49 | * Note: the union below must agree in the first 4 members | |
50 | * so the ioctl's will work. | |
b242391c | 51 | */ |
3cec0c76 | 52 | struct rthash { |
b242391c SL |
53 | struct rt_entry *rt_forw; |
54 | struct rt_entry *rt_back; | |
55 | }; | |
56 | ||
57 | struct rt_entry { | |
58 | struct rt_entry *rt_forw; | |
59 | struct rt_entry *rt_back; | |
3cec0c76 SL |
60 | union { |
61 | struct rtentry rtu_rt; | |
62 | struct { | |
63 | u_long rtu_hash; | |
64 | struct sockaddr rtu_dst; | |
6a8616d4 | 65 | struct sockaddr rtu_router; |
3cec0c76 | 66 | short rtu_flags; |
e6b5ed24 | 67 | short rtu_state; |
6a8616d4 | 68 | int rtu_timer; |
3cec0c76 | 69 | int rtu_metric; |
e0a3d4f9 | 70 | struct interface *rtu_ifp; |
3cec0c76 SL |
71 | } rtu_entry; |
72 | } rt_rtu; | |
b242391c SL |
73 | }; |
74 | ||
3cec0c76 SL |
75 | #define rt_rt rt_rtu.rtu_rt /* pass to ioctl */ |
76 | #define rt_hash rt_rtu.rtu_entry.rtu_hash /* for net or host */ | |
77 | #define rt_dst rt_rtu.rtu_entry.rtu_dst /* match value */ | |
6a8616d4 | 78 | #define rt_router rt_rtu.rtu_entry.rtu_router /* who to forward to */ |
e6b5ed24 | 79 | #define rt_flags rt_rtu.rtu_entry.rtu_flags /* kernel flags */ |
3cec0c76 | 80 | #define rt_timer rt_rtu.rtu_entry.rtu_timer /* for invalidation */ |
e6b5ed24 | 81 | #define rt_state rt_rtu.rtu_entry.rtu_state /* see below */ |
3cec0c76 SL |
82 | #define rt_metric rt_rtu.rtu_entry.rtu_metric /* cost of route */ |
83 | #define rt_ifp rt_rtu.rtu_entry.rtu_ifp /* interface to take */ | |
84 | ||
b242391c SL |
85 | #define ROUTEHASHSIZ 19 |
86 | ||
87 | /* | |
e6b5ed24 | 88 | * "State" of routing table entry. |
b242391c | 89 | */ |
e0a3d4f9 SL |
90 | #define RTS_CHANGED 0x1 /* route has been altered recently */ |
91 | #define RTS_PASSIVE 0x20 /* don't time out route */ | |
92 | #define RTS_INTERFACE 0x40 /* route is for network interface */ | |
93 | #define RTS_REMOTE 0x80 /* route is for ``remote'' entity */ | |
b242391c | 94 | |
3cec0c76 | 95 | struct rthash nethash[ROUTEHASHSIZ], hosthash[ROUTEHASHSIZ]; |
eae14a37 | 96 | struct rt_entry *rtlookup(), *rtfind(); |
b242391c SL |
97 | |
98 | /* | |
e6b5ed24 | 99 | * Per address family routines. |
b242391c SL |
100 | */ |
101 | struct afswitch { | |
e6b5ed24 SL |
102 | int (*af_hash)(); /* returns keys based on address */ |
103 | int (*af_netmatch)(); /* verifies net # matching */ | |
104 | int (*af_output)(); /* interprets address for sending */ | |
75659c93 SL |
105 | int (*af_portmatch)(); /* packet from some other router? */ |
106 | int (*af_portcheck)(); /* packet from priviledged peer? */ | |
e6b5ed24 | 107 | int (*af_checkhost)(); /* tells if address for host or net */ |
75659c93 | 108 | int (*af_canon)(); /* canonicalize address for compares */ |
b242391c SL |
109 | }; |
110 | ||
e6b5ed24 SL |
111 | /* |
112 | * Structure returned by af_hash routines. | |
113 | */ | |
b242391c | 114 | struct afhash { |
e6b5ed24 SL |
115 | u_int afh_hosthash; /* host based hash */ |
116 | u_int afh_nethash; /* network based hash */ | |
b242391c SL |
117 | }; |
118 | ||
e6b5ed24 | 119 | struct afswitch afswitch[AF_MAX]; /* table proper */ |
e0a3d4f9 SL |
120 | |
121 | /* | |
122 | * When we find any interfaces marked down we rescan the | |
123 | * kernel every CHECK_INTERVAL seconds to see if they've | |
124 | * come up. | |
125 | */ | |
126 | #define CHECK_INTERVAL (1*60) |