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Annotation of 42BSD/etc/routed/interface.h, revision 1.1.1.1

1.1       root        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();

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