[mirror_ubuntu-artful-kernel.git] / net / atm / lec_arpc.h

/*
 * Lec arp cache
 *
 * Marko Kiiskila <mkiiskila@yahoo.com>
 */
#ifndef _LEC_ARP_H_
#define _LEC_ARP_H_
#include <linux/atm.h>
#include <linux/atmdev.h>
#include <linux/if_ether.h>
#include <linux/atmlec.h>

struct lec_arp_table {
	struct lec_arp_table *next;	/* Linked entry list */
	unsigned char atm_addr[ATM_ESA_LEN];	/* Atm address */
	unsigned char mac_addr[ETH_ALEN];	/* Mac address */
	int is_rdesc;			/* Mac address is a route descriptor */
	struct atm_vcc *vcc;		/* Vcc this entry is attached */
	struct atm_vcc *recv_vcc;	/* Vcc we receive data from */

	void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb);
					/* Push that leads to daemon */

	void (*old_recv_push) (struct atm_vcc *vcc, struct sk_buff *skb);
					/* Push that leads to daemon */

	void (*old_close) (struct atm_vcc *vcc);
					/* We want to see when this vcc gets closed */

	unsigned long last_used;	/* For expiry */
	unsigned long timestamp;	/* Used for various timestamping things:
					 * 1. FLUSH started
					 *    (status=ESI_FLUSH_PENDING)
					 * 2. Counting to
					 *    max_unknown_frame_time
					 *    (status=ESI_ARP_PENDING||
					 *     status=ESI_VC_PENDING)
					 */
	unsigned char no_tries;		/* No of times arp retry has been tried */
	unsigned char status;		/* Status of this entry */
	unsigned short flags;		/* Flags for this entry */
	unsigned short packets_flooded;	/* Data packets flooded */
	unsigned long flush_tran_id;	/* Transaction id in flush protocol */
	struct timer_list timer;	/* Arping timer */
	struct lec_priv *priv;		/* Pointer back */
	u8 *tlvs;
	u32 sizeoftlvs;			/*
					 * LANE2: Each MAC address can have TLVs
					 * associated with it.  sizeoftlvs tells the
					 * the length of the tlvs array
					 */
	struct sk_buff_head tx_wait;	/* wait queue for outgoing packets */
};

/*
 * LANE2: Template tlv struct for accessing
 * the tlvs in the lec_arp_table->tlvs array
 */
struct tlv {
	u32 type;
	u8 length;
	u8 value[255];
};

/* Status fields */
#define ESI_UNKNOWN 0		/*
				 * Next packet sent to this mac address
				 * causes ARP-request to be sent
				 */
#define ESI_ARP_PENDING 1	/*
				 * There is no ATM address associated with this
				 * 48-bit address.  The LE-ARP protocol is in
				 * progress.
				 */
#define ESI_VC_PENDING 2	/*
				 * There is a valid ATM address associated with
				 * this 48-bit address but there is no VC set
				 * up to that ATM address.  The signaling
				 * protocol is in process.
				 */
#define ESI_FLUSH_PENDING 4	/*
				 * The LEC has been notified of the FLUSH_START
				 * status and it is assumed that the flush
				 * protocol is in process.
				 */
#define ESI_FORWARD_DIRECT 5	/*
				 * Either the Path Switching Delay (C22) has
				 * elapsed or the LEC has notified the Mapping
				 * that the flush protocol has completed.  In
				 * either case, it is safe to forward packets
				 * to this address via the data direct VC.
				 */

/* Flag values */
#define LEC_REMOTE_FLAG      0x0001
#define LEC_PERMANENT_FLAG   0x0002

#endif /* _LEC_ARP_H_ */
Commit	Line	Data
1da177e4 LT	1	/*
1da177e4 LT	2	* Lec arp cache
1da177e4	3	*
1c9d3e72	4	* Marko Kiiskila <mkiiskila@yahoo.com>
1da177e4	5	*/
1c9d3e72 CW	6	#ifndef _LEC_ARP_H_
1c9d3e72 CW	7	#define _LEC_ARP_H_
1da177e4 LT	8	#include <linux/atm.h>
	9	#include <linux/atmdev.h>
	10	#include <linux/if_ether.h>
	11	#include <linux/atmlec.h>
	12
	13	struct lec_arp_table {
1c9d3e72 CW	14	struct lec_arp_table next; / Linked entry list */
	15	unsigned char atm_addr[ATM_ESA_LEN]; /* Atm address */
	16	unsigned char mac_addr[ETH_ALEN]; /* Mac address */
	17	int is_rdesc; /* Mac address is a route descriptor */
	18	struct atm_vcc vcc; / Vcc this entry is attached */
	19	struct atm_vcc recv_vcc; / Vcc we receive data from */
1da177e4	20
1c9d3e72 CW	21	void (old_push) (struct atm_vcc vcc, struct sk_buff *skb);
	22	/* Push that leads to daemon */
	23
	24	void (old_recv_push) (struct atm_vcc vcc, struct sk_buff *skb);
	25	/* Push that leads to daemon */
	26
	27	void (old_close) (struct atm_vcc vcc);
	28	/* We want to see when this vcc gets closed */
	29
	30	unsigned long last_used; /* For expiry */
	31	unsigned long timestamp; /* Used for various timestamping things:
	32	* 1. FLUSH started
	33	* (status=ESI_FLUSH_PENDING)
	34	* 2. Counting to
	35	* max_unknown_frame_time
	36	* (status=ESI_ARP_PENDING\|\|
	37	* status=ESI_VC_PENDING)
	38	*/
	39	unsigned char no_tries; /* No of times arp retry has been tried */
	40	unsigned char status; /* Status of this entry */
	41	unsigned short flags; /* Flags for this entry */
	42	unsigned short packets_flooded; /* Data packets flooded */
	43	unsigned long flush_tran_id; /* Transaction id in flush protocol */
	44	struct timer_list timer; /* Arping timer */
	45	struct lec_priv priv; / Pointer back */
	46	u8 *tlvs;
	47	u32 sizeoftlvs; /*
	48	* LANE2: Each MAC address can have TLVs
	49	* associated with it. sizeoftlvs tells the
	50	* the length of the tlvs array
	51	*/
	52	struct sk_buff_head tx_wait; /* wait queue for outgoing packets */
1da177e4 LT	53	};
1da177e4 LT	54
1c9d3e72 CW	55	/*
	56	* LANE2: Template tlv struct for accessing
	57	* the tlvs in the lec_arp_table->tlvs array
	58	*/
	59	struct tlv {
	60	u32 type;
	61	u8 length;
	62	u8 value[255];
1da177e4 LT	63	};
	64
	65	/* Status fields */
1c9d3e72 CW	66	#define ESI_UNKNOWN 0 /*
	67	* Next packet sent to this mac address
	68	* causes ARP-request to be sent
	69	*/
	70	#define ESI_ARP_PENDING 1 /*
	71	* There is no ATM address associated with this
	72	* 48-bit address. The LE-ARP protocol is in
	73	* progress.
	74	*/
	75	#define ESI_VC_PENDING 2 /*
	76	* There is a valid ATM address associated with
	77	* this 48-bit address but there is no VC set
	78	* up to that ATM address. The signaling
	79	* protocol is in process.
	80	*/
	81	#define ESI_FLUSH_PENDING 4 /*
	82	* The LEC has been notified of the FLUSH_START
	83	* status and it is assumed that the flush
	84	* protocol is in process.
	85	*/
	86	#define ESI_FORWARD_DIRECT 5 /*
	87	* Either the Path Switching Delay (C22) has
	88	* elapsed or the LEC has notified the Mapping
	89	* that the flush protocol has completed. In
	90	* either case, it is safe to forward packets
	91	* to this address via the data direct VC.
	92	*/
1da177e4 LT	93
	94	/* Flag values */
	95	#define LEC_REMOTE_FLAG 0x0001
	96	#define LEC_PERMANENT_FLAG 0x0002
	97
1c9d3e72	98	#endif /* _LEC_ARP_H_ */