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/* SPDX-License-Identifier: GPL-2.0 */
/*
* 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 hlist_node 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 */
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 length of the tlvs array
*/
struct sk_buff_head tx_wait; /* wait queue for outgoing packets */
refcount_t usage; /* usage count */
};
/*
* 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_ */
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