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      1 /* atmarp.h - ATM ARP protocol and kernel-demon interface definitions */
      2 
      3 /* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */
      4 
      5 
      6 #ifndef _LINUX_ATMARP_H
      7 #define _LINUX_ATMARP_H
      8 
      9 #include <linux/types.h>
     10 #include <linux/atmapi.h>
     11 #include <linux/atmioc.h>
     12 
     13 
     14 #define ATMARP_RETRY_DELAY 30		/* request next resolution or forget
     15 					   NAK after 30 sec - should go into
     16 					   atmclip.h */
     17 #define ATMARP_MAX_UNRES_PACKETS 5	/* queue that many packets while
     18 					   waiting for the resolver */
     19 
     20 
     21 #define ATMARPD_CTRL	_IO('a',ATMIOC_CLIP+1)	/* become atmarpd ctrl sock */
     22 #define ATMARP_MKIP	_IO('a',ATMIOC_CLIP+2)	/* attach socket to IP */
     23 #define ATMARP_SETENTRY	_IO('a',ATMIOC_CLIP+3)	/* fill or hide ARP entry */
     24 #define ATMARP_ENCAP	_IO('a',ATMIOC_CLIP+5)	/* change encapsulation */
     25 
     26 
     27 enum atmarp_ctrl_type {
     28 	act_invalid,		/* catch uninitialized structures */
     29 	act_need,		/* need address resolution */
     30 	act_up,			/* interface is coming up */
     31 	act_down,		/* interface is going down */
     32 	act_change		/* interface configuration has changed */
     33 };
     34 
     35 struct atmarp_ctrl {
     36 	enum atmarp_ctrl_type	type;	/* message type */
     37 	int			itf_num;/* interface number (if present) */
     38 	__be32			ip;	/* IP address (act_need only) */
     39 };
     40 
     41 #endif
     42