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- /* Interface control structure */
- struct interface {
- struct interface *next; /* Linked list pointer */
- char *name; /* Ascii string with interface name */
- int16 mtu; /* Maximum transmission unit size */
- int (*send)(); /* Routine to call to send IP datagram */
- int (*output)(); /* Routine to call to send raw packet */
- int (*recv)(); /* Routine to kick to process input */
- int (*stop)(); /* Routine to call before detaching */
- int16 dev; /* Subdevice number to pass to send */
- int16 flags; /* State of interface */
- #define IF_ACTIVE 0x01
- #define IF_BROADCAST 0x04 /* Interface is capable of broadcasting */
- char *hwaddr; /* Device hardware address, if any */
- };
- #define NULLIF (struct interface *)NULL
- extern struct interface *ifaces; /* Head of interface list */
-