projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| b242391c SL |
1 | /* defs.h 4.1 82/05/22 */ |
| 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 | */ | |
| 9 | ||
| 10 | /* | |
| 11 | * Internal routing table structure. | |
| 12 | * Differs a bit from kernel tables. | |
| 13 | */ | |
| 14 | struct rt_hash { | |
| 15 | struct rt_entry *rt_forw; | |
| 16 | struct rt_entry *rt_back; | |
| 17 | }; | |
| 18 | ||
| 19 | struct rt_entry { | |
| 20 | struct rt_entry *rt_forw; | |
| 21 | struct rt_entry *rt_back; | |
| 22 | u_long rt_hash; /* for net or for host */ | |
| 23 | struct sockaddr rt_dst; /* match value */ | |
| 24 | struct sockaddr rt_gateway; /* who to forward to */ | |
| 25 | short rt_flags; /* see below */ | |
| 26 | short rt_retry; /* # ioctl retries */ | |
| 27 | int rt_timer; /* for invalidation */ | |
| 28 | int rt_metric; /* hop count of route */ | |
| 29 | struct ifnet *rt_ifp; /* corresponding interface */ | |
| 30 | }; | |
| 31 | ||
| 32 | #define ROUTEHASHSIZ 19 | |
| 33 | ||
| 34 | /* | |
| 35 | * Flags used by routing process are not | |
| 36 | * interpreted by kernel. | |
| 37 | */ | |
| 38 | #define RTF_DELRT 0x8 /* delete pending */ | |
| 39 | #define RTF_CHGRT 0x10 /* change command pending */ | |
| 40 | #define RTF_ADDRT 0x20 /* add command pending */ | |
| 41 | #define RTF_SILENT 0x40 /* don't send to router */ | |
| 42 | ||
| 43 | struct rt_hash nethash[ROUTEHASHSIZ], hosthash[ROUTEHASHSIZ]; | |
| 44 | struct rt_entry *rtlookup(); | |
| 45 | ||
| 46 | /* | |
| 47 | * Per address family routines. Hash returns hash key based | |
| 48 | * on address; netmatch verifies net # matching, output interprets | |
| 49 | * an address in preparation for sending; portmatch interprets | |
| 50 | * an address in verifying incoming packets were sent from the | |
| 51 | * appropriate port; checkhost is used to decide whether an | |
| 52 | * address is for a host, or for a network (e.g. broadcast); | |
| 53 | * canon purges any extraneous stuff from a sender's address | |
| 54 | * before pattern matching is performed (e.g. Internet ports). | |
| 55 | */ | |
| 56 | struct afswitch { | |
| 57 | int (*af_hash)(); | |
| 58 | int (*af_netmatch)(); | |
| 59 | int (*af_output)(); | |
| 60 | int (*af_portmatch)(); | |
| 61 | int (*af_checkhost)(); | |
| 62 | int (*af_canon)(); | |
| 63 | }; | |
| 64 | ||
| 65 | struct afhash { | |
| 66 | u_int afh_hosthash; | |
| 67 | u_int afh_nethash; | |
| 68 | }; | |
| 69 | ||
| 70 | struct afswitch afswitch[AF_MAX]; |