atm_zatm.h

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/* atm_zatm.h - Driver-specific declarations of the ZATM driver (for use by
        driver-specific utilities) */

/* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */


#ifndef LINUX_ATM_ZATM_H
#define LINUX_ATM_ZATM_H

/*
 * Note: non-kernel programs including this file must also include
 * sys/types.h for struct timeval
 */

#include <linux/atmapi.h>
#include <linux/atmioc.h>

#define ZATM_GETPOOL    _IOW('a',ATMIOC_SARPRV+1,struct atmif_sioc)
                        /* get pool statistics */
#define ZATM_GETPOOLZ   _IOW('a',ATMIOC_SARPRV+2,struct atmif_sioc)
                        /* get statistics and zero */
#define ZATM_SETPOOL    _IOW('a',ATMIOC_SARPRV+3,struct atmif_sioc)
                        /* set pool parameters */

struct zatm_pool_info {
    int ref_count;          /* free buffer pool usage counters */
    int low_water,high_water;   /* refill parameters */
    int rqa_count,rqu_count;    /* queue condition counters */
    int offset,next_off;        /* alignment optimizations: offset */
    int next_cnt,next_thres;    /* repetition counter and threshold */
};

struct zatm_pool_req {
    int pool_num;           /* pool number */
    struct zatm_pool_info info; /* actual information */
};

struct zatm_t_hist {
    struct timeval real;        /* real (wall-clock) time */
    struct timeval expected;    /* expected real time */
};


#define ZATM_OAM_POOL       0   /* free buffer pool for OAM cells */
#define ZATM_AAL0_POOL      1   /* free buffer pool for AAL0 cells */
#define ZATM_AAL5_POOL_BASE 2   /* first AAL5 free buffer pool */
#define ZATM_LAST_POOL  ZATM_AAL5_POOL_BASE+10 /* max. 64 kB */

#define ZATM_TIMER_HISTORY_SIZE 16  /* number of timer adjustments to
                       record; must be 2^n */

#endif