projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 6c0a063b SL |
1 | /* route.h 4.1 82/03/27 */ |
| 2 | ||
| 3 | /* | |
| 4 | * Structure of kernel resident routing | |
| 5 | * data base. Assumption is user routing | |
| 6 | * daemon maintains this data base based | |
| 7 | * on routing information it gleans from | |
| 8 | * gateway protocols it listens to (e.g. GGP). | |
| 9 | * | |
| 10 | * TO ADD: | |
| 11 | * more statistics -- smooth usage figures | |
| 12 | */ | |
| 13 | struct rtentry { | |
| 14 | u_long rt_key; /* lookup key */ | |
| 15 | struct sockaddr rt_dst; /* match value */ | |
| 16 | struct sockaddr rt_gateway; /* who to forward to */ | |
| 17 | short rt_flags; /* see below */ | |
| 18 | short rt_refcnt; /* # held references */ | |
| 19 | u_long rt_use; /* raw # packets forwarded */ | |
| 20 | struct ifnet *rt_ifp; /* interface to use */ | |
| 21 | }; | |
| 22 | ||
| 23 | struct route { | |
| 24 | struct rtentry *ro_rt; | |
| 25 | struct sockaddr ro_dst; | |
| 26 | caddr_t ro_pcb; /* back pointer? */ | |
| 27 | }; | |
| 28 | ||
| 29 | /* | |
| 30 | * Flags and host/network status. | |
| 31 | */ | |
| 32 | #define RTS_UP 0x1 /* route useable */ | |
| 33 | #define RTF_MUNGE 0x2 /* munge packet src address */ | |
| 34 | ||
| 35 | #ifdef KERNEL | |
| 36 | /* | |
| 37 | * Lookup are hashed by a key. Each hash bucket | |
| 38 | * consists of a linked list of mbuf's | |
| 39 | * containing routing entries. Dead entries are | |
| 40 | * reclaimed along with mbufs. | |
| 41 | */ | |
| 42 | #define RTHASHSIZ 16 | |
| 43 | struct mbuf *routehash[RTHASHSIZ]; | |
| 44 | #endif |