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 1995-1999 by Werner Almesberger, EPFL LRC/ICA */
   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/atmapi.h>
  16 #include <linux/atmioc.h>
  17
  18 #define ZATM_GETPOOL    _IOW('a',ATMIOC_SARPRV+1,struct atmif_sioc)
  19                                                 /* get pool statistics */
  20 #define ZATM_GETPOOLZ   _IOW('a',ATMIOC_SARPRV+2,struct atmif_sioc)
  21                                                 /* get statistics and zero */
  22 #define ZATM_SETPOOL    _IOW('a',ATMIOC_SARPRV+3,struct atmif_sioc)
  23                                                 /* set pool parameters */
  24 #define ZATM_GETTHIST   _IOW('a',ATMIOC_SARPRV+4,struct atmif_sioc)
  25                                                 /* get a history of timer
  26                                                    differences */
  27
  28 struct zatm_pool_info {
  29         int ref_count;                  /* free buffer pool usage counters */
  30         int low_water,high_water;       /* refill parameters */
  31         int rqa_count,rqu_count;        /* queue condition counters */
  32         int offset,next_off;            /* alignment optimizations: offset */
  33         int next_cnt,next_thres;        /* repetition counter and threshold */
  34 };
  35
  36 struct zatm_pool_req {
  37         int pool_num;                   /* pool number */
  38         struct zatm_pool_info info;     /* actual information */
  39 };
  40
  41 struct zatm_t_hist {
  42         struct timeval real;            /* real (wall-clock) time */
  43         struct timeval expected;        /* expected real time */
  44 };
  45
  46
  47 #define ZATM_OAM_POOL           0       /* free buffer pool for OAM cells */
  48 #define ZATM_AAL0_POOL          1       /* free buffer pool for AAL0 cells */
  49 #define ZATM_AAL5_POOL_BASE     2       /* first AAL5 free buffer pool */
  50 #define ZATM_LAST_POOL  ZATM_AAL5_POOL_BASE+10 /* max. 64 kB */
  51
  52 #define ZATM_TIMER_HISTORY_SIZE 16      /* number of timer adjustments to
  53                                            record; must be 2^n */
  54
  55 #endif