/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Lec arp cache
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*
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* Marko Kiiskila <mkiiskila@yahoo.com>
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*/
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#ifndef _LEC_ARP_H_
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#define _LEC_ARP_H_
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#include <linux/atm.h>
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#include <linux/atmdev.h>
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#include <linux/if_ether.h>
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#include <linux/atmlec.h>
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struct lec_arp_table {
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struct hlist_node next; /* Linked entry list */
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unsigned char atm_addr[ATM_ESA_LEN]; /* Atm address */
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unsigned char mac_addr[ETH_ALEN]; /* Mac address */
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int is_rdesc; /* Mac address is a route descriptor */
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struct atm_vcc *vcc; /* Vcc this entry is attached */
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struct atm_vcc *recv_vcc; /* Vcc we receive data from */
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void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb);
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/* Push that leads to daemon */
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void (*old_recv_push) (struct atm_vcc *vcc, struct sk_buff *skb);
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/* Push that leads to daemon */
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unsigned long last_used; /* For expiry */
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unsigned long timestamp; /* Used for various timestamping things:
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* 1. FLUSH started
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* (status=ESI_FLUSH_PENDING)
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* 2. Counting to
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* max_unknown_frame_time
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* (status=ESI_ARP_PENDING||
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* status=ESI_VC_PENDING)
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*/
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unsigned char no_tries; /* No of times arp retry has been tried */
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unsigned char status; /* Status of this entry */
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unsigned short flags; /* Flags for this entry */
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unsigned short packets_flooded; /* Data packets flooded */
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unsigned long flush_tran_id; /* Transaction id in flush protocol */
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struct timer_list timer; /* Arping timer */
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struct lec_priv *priv; /* Pointer back */
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u8 *tlvs;
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u32 sizeoftlvs; /*
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* LANE2: Each MAC address can have TLVs
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* associated with it. sizeoftlvs tells
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* the length of the tlvs array
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*/
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struct sk_buff_head tx_wait; /* wait queue for outgoing packets */
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refcount_t usage; /* usage count */
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};
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/*
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* LANE2: Template tlv struct for accessing
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* the tlvs in the lec_arp_table->tlvs array
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*/
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struct tlv {
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u32 type;
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u8 length;
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u8 value[255];
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};
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/* Status fields */
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#define ESI_UNKNOWN 0 /*
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* Next packet sent to this mac address
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* causes ARP-request to be sent
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*/
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#define ESI_ARP_PENDING 1 /*
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* There is no ATM address associated with this
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* 48-bit address. The LE-ARP protocol is in
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* progress.
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*/
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#define ESI_VC_PENDING 2 /*
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* There is a valid ATM address associated with
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* this 48-bit address but there is no VC set
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* up to that ATM address. The signaling
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* protocol is in process.
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*/
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#define ESI_FLUSH_PENDING 4 /*
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* The LEC has been notified of the FLUSH_START
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* status and it is assumed that the flush
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* protocol is in process.
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*/
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#define ESI_FORWARD_DIRECT 5 /*
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* Either the Path Switching Delay (C22) has
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* elapsed or the LEC has notified the Mapping
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* that the flush protocol has completed. In
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* either case, it is safe to forward packets
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* to this address via the data direct VC.
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*/
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/* Flag values */
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#define LEC_REMOTE_FLAG 0x0001
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#define LEC_PERMANENT_FLAG 0x0002
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#endif /* _LEC_ARP_H_ */
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