/*
 * 
 * ATM Lan Emulation Daemon vs. driver interface
 *
 * carnil@cs.tut.fi
 *
 */

#ifndef _ATMLEC_H_
#define _ATMLEC_H_

#include <linux/atmapi.h>
#include <linux/atmioc.h>
#include <linux/atm.h>
#include <linux/if_ether.h>
/* ATM lec daemon control socket */
#define ATMLEC_CTRL _IO('a',ATMIOC_LANE)
#define ATMLEC_DATA _IO('a',ATMIOC_LANE+1)
#define ATMLEC_MCAST _IO('a',ATMIOC_LANE+2)

/* Maximum number of LEC interfaces (tweakable) */
#define MAX_LEC_ITF 48

/* From the total of MAX_LEC_ITF, last NUM_TR_DEVS are reserved for Token Ring.
 * E.g. if MAX_LEC_ITF = 48 and NUM_TR_DEVS = 8, then lec0-lec39 are for
 * Ethernet ELANs and lec40-lec47 are for Token Ring ELANS.
 */
#define NUM_TR_DEVS 8

typedef enum { 
        l_set_mac_addr,   l_del_mac_addr, 
        l_svc_setup, 
        l_addr_delete,    l_topology_change, 
        l_flush_complete, l_arp_update,
        l_narp_req, /* LANE2 mandates the use of this */
        l_config,         l_flush_tran_id, 
        l_set_lecid,      l_arp_xmt,
        l_rdesc_arp_xmt,
        l_associate_req,
        l_should_bridge   /* should we bridge this MAC? */
} atmlec_msg_type;

#define ATMLEC_MSG_TYPE_MAX l_should_bridge

struct atmlec_config_msg {
        unsigned int maximum_unknown_frame_count;
        unsigned int max_unknown_frame_time;
        unsigned short max_retry_count;
        unsigned int aging_time;
        unsigned int forward_delay_time;
        unsigned int arp_response_time;
        unsigned int flush_timeout;
        unsigned int path_switching_delay;
        unsigned int  lane_version; /* LANE2: 1 for LANEv1, 2 for LANEv2 */
        int mtu;
        int is_proxy;
};
 
struct atmlec_msg {
        atmlec_msg_type type;
        int             sizeoftlvs;        /* LANE2: if != 0, tlvs follow */ 
        union {
                struct {
                        unsigned char mac_addr[ETH_ALEN];
                        unsigned char atm_addr[ATM_ESA_LEN];
                        unsigned int flag;/* Topology_change flag, 
                                              remoteflag, permanent flag,
                                              lecid, transaction id */
                        unsigned int targetless_le_arp; /* LANE2 */
                        unsigned int no_source_le_narp; /* LANE2 */
                } normal;
                struct atmlec_config_msg config;
                struct {
                        uint16_t lec_id;                     /* requestor lec_id  */
                        uint32_t tran_id;                    /* transaction id    */
                        unsigned char mac_addr[ETH_ALEN];    /* dst mac addr      */
                        unsigned char atm_addr[ATM_ESA_LEN]; /* reqestor ATM addr */
                } proxy;
		     /* For mapping LE_ARP requests to responses. Filled by */
        } content;       /* zeppelin, returned by kernel. Used only when proxying */ 
} __ATM_API_ALIGN;

struct atmlec_ioc {
        int dev_num;
        unsigned char atm_addr[ATM_ESA_LEN];
        unsigned char receive;    /* 1= receive vcc, 0 = send vcc */
};
#endif /* _ATMLEC_H_ */
