| 1 | /* interface.h 4.1 83/01/11 */ |
| 2 | |
| 3 | /* |
| 4 | * Routing table management daemon. |
| 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * An ``interface'' is similar to an ifnet structure, |
| 9 | * except it doesn't contain q'ing info, and it also |
| 10 | * handles ``logical'' interfaces (remote gateways |
| 11 | * that we want to keep polling even if they go down). |
| 12 | * The list of interfaces which we maintain is used |
| 13 | * in supplying the gratuitous routing table updates. |
| 14 | */ |
| 15 | struct interface { |
| 16 | struct interface *int_next; |
| 17 | struct sockaddr int_addr; /* address on this host */ |
| 18 | union { |
| 19 | struct sockaddr intu_broadaddr; |
| 20 | struct sockaddr intu_dstaddr; |
| 21 | } int_intu; |
| 22 | #define int_broadaddr int_intu.intu_broadaddr /* broadcast address */ |
| 23 | #define int_dstaddr int_intu.intu_dstaddr /* other end of p-to-p link */ |
| 24 | int int_metric; /* init's routing entry */ |
| 25 | int int_flags; /* see below */ |
| 26 | int int_net; /* network # */ |
| 27 | struct ifdebug int_input, int_output; /* packet tracing stuff */ |
| 28 | int int_ipackets; /* input packets received */ |
| 29 | int int_opackets; /* output packets sent */ |
| 30 | char *int_name; /* from kernel if structure */ |
| 31 | u_short int_transitions; /* times gone up-down */ |
| 32 | }; |
| 33 | |
| 34 | /* |
| 35 | * 0x1 to 0x10 are reused from the kernel's ifnet definitions, |
| 36 | * the others agree with the RTS_ flags defined below |
| 37 | */ |
| 38 | #define IFF_UP 0x1 /* interface is up */ |
| 39 | #define IFF_BROADCAST 0x2 /* broadcast address valid */ |
| 40 | #define IFF_DEBUG 0x4 /* turn on debugging */ |
| 41 | #define IFF_ROUTE 0x8 /* routing entry installed */ |
| 42 | #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ |
| 43 | #define IFF_PASSIVE 0x20 /* can't tell if up/down */ |
| 44 | #define IFF_INTERFACE 0x40 /* hardware interface */ |
| 45 | #define IFF_REMOTE 0x80 /* interface isn't on this machine */ |
| 46 | |
| 47 | struct interface *if_ifwithaddr(); |
| 48 | struct interface *if_ifwithnet(); |
| 49 | struct interface *if_iflookup(); |