/* * 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 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