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97 lines
3.0 KiB
97 lines
3.0 KiB
/* 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 <[email protected]> |
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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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