lec_arpc.h
上传用户：jlfgdled
上传日期：2013-04-10
资源大小：33168k
文件大小：6k
- /*
- * Lec arp cache
- * Marko Kiiskila carnil@cs.tut.fi
- *
- */
- #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; /* LANE2: Each MAC address can have TLVs */
- u32 sizeoftlvs; /* associated with it. sizeoftlvs tells the */
- /* the length of the tlvs array */
- struct sk_buff_head tx_wait; /* wait queue for outgoing packets */
- };
- struct tlv { /* LANE2: Template tlv struct for accessing */
- /* the tlvs in the lec_arp_table->tlvs array*/
- 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
- /* Protos */
- void lec_arp_init(struct lec_priv *priv);
- int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc);
- void lec_arp_destroy(struct lec_priv *priv);
- void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc);
- struct atm_vcc *lec_arp_resolve(struct lec_priv *priv,
- unsigned char *mac_to_addr,
- int is_rdesc,
- struct lec_arp_table **ret_entry);
- void lec_vcc_added(struct lec_priv *dev,
- struct atmlec_ioc *ioc_data, struct atm_vcc *vcc,
- void (*old_push)(struct atm_vcc *vcc, struct sk_buff *skb));
- void lec_arp_check_empties(struct lec_priv *priv,
- struct atm_vcc *vcc, struct sk_buff *skb);
- int lec_addr_delete(struct lec_priv *priv,
- unsigned char *mac_addr, unsigned long permanent);
- void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id);
- void lec_arp_update(struct lec_priv *priv,
- unsigned char *mac_addr, unsigned char *atm_addr,
- unsigned long remoteflag, unsigned int targetless_le_arp);
- void lec_set_flush_tran_id(struct lec_priv *priv,
- unsigned char *mac_addr, unsigned long tran_id);
- #endif
English
