1 /*
2 * Lec arp cache
3 *
4 * Marko Kiiskila <mkiiskila@yahoo.com>
5 */
6 #ifndef _LEC_ARP_H_
7 #define _LEC_ARP_H_
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 {
14 struct hlist_node 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 */
20
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 unsigned long last_used; /* For expiry */
28 unsigned long timestamp; /* Used for various timestamping things:
29 * 1. FLUSH started
30 * (status=ESI_FLUSH_PENDING)
31 * 2. Counting to
32 * max_unknown_frame_time
33 * (status=ESI_ARP_PENDING||
34 * status=ESI_VC_PENDING)
35 */
36 unsigned char no_tries; /* No of times arp retry has been tried */
37 unsigned char status; /* Status of this entry */
38 unsigned short flags; /* Flags for this entry */
39 unsigned short packets_flooded; /* Data packets flooded */
40 unsigned long flush_tran_id; /* Transaction id in flush protocol */
41 struct timer_list timer; /* Arping timer */
42 struct lec_priv *priv; /* Pointer back */
43 u8 *tlvs;
44 u32 sizeoftlvs; /*
45 * LANE2: Each MAC address can have TLVs
46 * associated with it. sizeoftlvs tells the
47 * the length of the tlvs array
48 */
49 struct sk_buff_head tx_wait; /* wait queue for outgoing packets */
50 atomic_t usage; /* usage count */
51 };
52
53 /*
54 * LANE2: Template tlv struct for accessing
55 * the tlvs in the lec_arp_table->tlvs array
56 */
57 struct tlv {
58 u32 type;
59 u8 length;
60 u8 value[255];
61 };
62
63 /* Status fields */
64 #define ESI_UNKNOWN 0 /*
65 * Next packet sent to this mac address
66 * causes ARP-request to be sent
67 */
68 #define ESI_ARP_PENDING 1 /*
69 * There is no ATM address associated with this
70 * 48-bit address. The LE-ARP protocol is in
71 * progress.
72 */
73 #define ESI_VC_PENDING 2 /*
74 * There is a valid ATM address associated with
75 * this 48-bit address but there is no VC set
76 * up to that ATM address. The signaling
77 * protocol is in process.
78 */
79 #define ESI_FLUSH_PENDING 4 /*
80 * The LEC has been notified of the FLUSH_START
81 * status and it is assumed that the flush
82 * protocol is in process.
83 */
84 #define ESI_FORWARD_DIRECT 5 /*
85 * Either the Path Switching Delay (C22) has
86 * elapsed or the LEC has notified the Mapping
87 * that the flush protocol has completed. In
88 * either case, it is safe to forward packets
89 * to this address via the data direct VC.
90 */
91
92 /* Flag values */
93 #define LEC_REMOTE_FLAG 0x0001
94 #define LEC_PERMANENT_FLAG 0x0002
95
96 #endif /* _LEC_ARP_H_ */
97
|
This page was automatically generated by the
LXR engine.
|