drivers/scsi/snic/snic_stats.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /* Copyright 2014 Cisco Systems, Inc.  All rights reserved. */
   3
   4 #ifndef __SNIC_STATS_H
   5 #define __SNIC_STATS_H
   6
   7 struct snic_io_stats {
   8         atomic64_t active;              /* Active IOs */
   9         atomic64_t max_active;          /* Max # active IOs */
  10         atomic64_t max_sgl;             /* Max # SGLs for any IO */
  11         atomic64_t max_time;            /* Max time to process IO */
  12         atomic64_t max_qtime;           /* Max time to Queue the IO */
  13         atomic64_t max_cmpl_time;       /* Max time to complete the IO */
  14         atomic64_t sgl_cnt[SNIC_MAX_SG_DESC_CNT]; /* SGL Counters */
  15         atomic64_t max_io_sz;           /* Max IO Size */
  16         atomic64_t compl;               /* IO Completions */
  17         atomic64_t fail;                /* IO Failures */
  18         atomic64_t req_null;            /* req or req info is NULL */
  19         atomic64_t alloc_fail;          /* Alloc Failures */
  20         atomic64_t sc_null;
  21         atomic64_t io_not_found;        /* IO Not Found */
  22         atomic64_t num_ios;             /* Number of IOs */
  23 };
  24
  25 struct snic_abort_stats {
  26         atomic64_t num;         /* Abort counter */
  27         atomic64_t fail;        /* Abort Failure Counter */
  28         atomic64_t drv_tmo;     /* Abort Driver Timeouts */
  29         atomic64_t fw_tmo;      /* Abort Firmware Timeouts */
  30         atomic64_t io_not_found;/* Abort IO Not Found */
  31         atomic64_t q_fail;      /* Abort Queuing Failed */
  32 };
  33
  34 struct snic_reset_stats {
  35         atomic64_t dev_resets;          /* Device Reset Counter */
  36         atomic64_t dev_reset_fail;      /* Device Reset Failures */
  37         atomic64_t dev_reset_aborts;    /* Device Reset Aborts */
  38         atomic64_t dev_reset_tmo;       /* Device Reset Timeout */
  39         atomic64_t dev_reset_terms;     /* Device Reset terminate */
  40         atomic64_t hba_resets;          /* hba/firmware resets */
  41         atomic64_t hba_reset_cmpl;      /* hba/firmware reset completions */
  42         atomic64_t hba_reset_fail;      /* hba/firmware failures */
  43         atomic64_t snic_resets;         /* snic resets */
  44         atomic64_t snic_reset_compl;    /* snic reset completions */
  45         atomic64_t snic_reset_fail;     /* snic reset failures */
  46 };
  47
  48 struct snic_fw_stats {
  49         atomic64_t actv_reqs;           /* Active Requests */
  50         atomic64_t max_actv_reqs;       /* Max Active Requests */
  51         atomic64_t out_of_res;          /* Firmware Out Of Resources */
  52         atomic64_t io_errs;             /* Firmware IO Firmware Errors */
  53         atomic64_t scsi_errs;           /* Target hits check condition */
  54 };
  55
  56 struct snic_misc_stats {
  57         u64     last_isr_time;
  58         u64     last_ack_time;
  59         atomic64_t ack_isr_cnt;
  60         atomic64_t cmpl_isr_cnt;
  61         atomic64_t errnotify_isr_cnt;
  62         atomic64_t max_cq_ents;         /* Max CQ Entries */
  63         atomic64_t data_cnt_mismat;     /* Data Count Mismatch */
  64         atomic64_t io_tmo;
  65         atomic64_t io_aborted;
  66         atomic64_t sgl_inval;           /* SGL Invalid */
  67         atomic64_t abts_wq_alloc_fail;  /* Abort Path WQ desc alloc failure */
  68         atomic64_t devrst_wq_alloc_fail;/* Device Reset - WQ desc alloc fail */
  69         atomic64_t wq_alloc_fail;       /* IO WQ desc alloc failure */
  70         atomic64_t no_icmnd_itmf_cmpls;
  71         atomic64_t io_under_run;
  72         atomic64_t qfull;
  73         atomic64_t qsz_rampup;
  74         atomic64_t qsz_rampdown;
  75         atomic64_t last_qsz;
  76         atomic64_t tgt_not_rdy;
  77 };
  78
  79 struct snic_stats {
  80         struct snic_io_stats io;
  81         struct snic_abort_stats abts;
  82         struct snic_reset_stats reset;
  83         struct snic_fw_stats fw;
  84         struct snic_misc_stats misc;
  85         atomic64_t io_cmpl_skip;
  86 };
  87
  88 void snic_stats_debugfs_init(struct snic *);
  89 void snic_stats_debugfs_remove(struct snic *);
  90
  91 /* Auxillary function to update active IO counter */
  92 static inline void
  93 snic_stats_update_active_ios(struct snic_stats *s_stats)
  94 {
  95         struct snic_io_stats *io = &s_stats->io;
  96         int nr_active_ios;
  97
  98         nr_active_ios = atomic64_read(&io->active);
  99         if (atomic64_read(&io->max_active) < nr_active_ios)
 100                 atomic64_set(&io->max_active, nr_active_ios);
 101
 102         atomic64_inc(&io->num_ios);
 103 }
 104
 105 /* Auxillary function to update IO completion counter */
 106 static inline void
 107 snic_stats_update_io_cmpl(struct snic_stats *s_stats)
 108 {
 109         atomic64_dec(&s_stats->io.active);
 110         if (unlikely(atomic64_read(&s_stats->io_cmpl_skip)))
 111                 atomic64_dec(&s_stats->io_cmpl_skip);
 112         else
 113                 atomic64_inc(&s_stats->io.compl);
 114 }
 115 #endif /* __SNIC_STATS_H */