include/linux/atm_zatm.h

   1 /* atm_zatm.h - Driver-specific declarations of the ZATM driver (for use by
   2                 driver-specific utilities) */
   3
   4 /* Written 1995-1997 by Werner Almesberger, EPFL LRC */
   5
   6
   7 #ifndef LINUX_ATM_ZATM_H
   8 #define LINUX_ATM_ZATM_H
   9
  10 /*
  11  * Note: non-kernel programs including this file must also include
  12  * sys/types.h for struct timeval
  13  */
  14
  15 #include <linux/atmioc.h>
  16
  17 #define ZATM_GETPOOL    _IOW('a',ATMIOC_SARPRV+1,struct atmif_sioc)
  18                                                 /* get pool statistics */
  19 #define ZATM_GETPOOLZ   _IOW('a',ATMIOC_SARPRV+2,struct atmif_sioc)
  20                                                 /* get statistics and zero */
  21 #define ZATM_SETPOOL    _IOW('a',ATMIOC_SARPRV+3,struct atmif_sioc)
  22                                                 /* set pool parameters */
  23 #define ZATM_GETTHIST   _IOW('a',ATMIOC_SARPRV+4,struct atmif_sioc)
  24                                                 /* get a history of timer
  25                                                    differences */
  26
  27 struct zatm_pool_info {
  28         int ref_count;                  /* free buffer pool usage counters */
  29         int low_water,high_water;       /* refill parameters */
  30         int rqa_count,rqu_count;        /* queue condition counters */
  31         int offset,next_off;            /* alignment optimizations: offset */
  32         int next_cnt,next_thres;        /* repetition counter and threshold */
  33 };
  34
  35 struct zatm_pool_req {
  36         int pool_num;                   /* pool number */
  37         struct zatm_pool_info info;     /* actual information */
  38 };
  39
  40 struct zatm_t_hist {
  41         struct timeval real;            /* real (wall-clock) time */
  42         struct timeval expected;        /* expected real time */
  43 };
  44
  45
  46 #define ZATM_OAM_POOL           0       /* free buffer pool for OAM cells */
  47 #define ZATM_AAL0_POOL          1       /* free buffer pool for AAL0 cells */
  48 #define ZATM_AAL5_POOL_BASE     2       /* first AAL5 free buffer pool */
  49 #define ZATM_LAST_POOL  ZATM_AAL5_POOL_BASE+10 /* max. 64 kB */
  50
  51 #define ZATM_TIMER_HISTORY_SIZE 16      /* number of timer adjustments to
  52                                            record; must be 2^n */
  53
  54 #endif