drivers/scsi/snic/snic_stats.h

   1 /*
   2  * Copyright 2014 Cisco Systems, Inc.  All rights reserved.
   3  *
   4  * This program is free software; you may redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   9  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  10  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  11  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  12  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  13  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  14  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  15  * SOFTWARE.
  16  */
  17
  18 #ifndef __SNIC_STATS_H
  19 #define __SNIC_STATS_H
  20
  21 struct snic_io_stats {
  22         atomic64_t active;              /* Active IOs */
  23         atomic64_t max_active;          /* Max # active IOs */
  24         atomic64_t max_sgl;             /* Max # SGLs for any IO */
  25         atomic64_t max_time;            /* Max time to process IO */
  26         atomic64_t max_qtime;           /* Max time to Queue the IO */
  27         atomic64_t max_cmpl_time;       /* Max time to complete the IO */
  28         atomic64_t sgl_cnt[SNIC_MAX_SG_DESC_CNT]; /* SGL Counters */
  29         atomic64_t max_io_sz;           /* Max IO Size */
  30         atomic64_t compl;               /* IO Completions */
  31         atomic64_t fail;                /* IO Failures */
  32         atomic64_t req_null;            /* req or req info is NULL */
  33         atomic64_t alloc_fail;          /* Alloc Failures */
  34         atomic64_t sc_null;
  35         atomic64_t io_not_found;        /* IO Not Found */
  36         atomic64_t num_ios;             /* Number of IOs */
  37 };
  38
  39 struct snic_abort_stats {
  40         atomic64_t num;         /* Abort counter */
  41         atomic64_t fail;        /* Abort Failure Counter */
  42         atomic64_t drv_tmo;     /* Abort Driver Timeouts */
  43         atomic64_t fw_tmo;      /* Abort Firmware Timeouts */
  44         atomic64_t io_not_found;/* Abort IO Not Found */
  45 };
  46
  47 struct snic_reset_stats {
  48         atomic64_t dev_resets;          /* Device Reset Counter */
  49         atomic64_t dev_reset_fail;      /* Device Reset Failures */
  50         atomic64_t dev_reset_aborts;    /* Device Reset Aborts */
  51         atomic64_t dev_reset_tmo;       /* Device Reset Timeout */
  52         atomic64_t dev_reset_terms;     /* Device Reset terminate */
  53         atomic64_t hba_resets;          /* hba/firmware resets */
  54         atomic64_t hba_reset_cmpl;      /* hba/firmware reset completions */
  55         atomic64_t hba_reset_fail;      /* hba/firmware failures */
  56         atomic64_t snic_resets;         /* snic resets */
  57         atomic64_t snic_reset_compl;    /* snic reset completions */
  58         atomic64_t snic_reset_fail;     /* snic reset failures */
  59 };
  60
  61 struct snic_fw_stats {
  62         atomic64_t actv_reqs;           /* Active Requests */
  63         atomic64_t max_actv_reqs;       /* Max Active Requests */
  64         atomic64_t out_of_res;          /* Firmware Out Of Resources */
  65         atomic64_t io_errs;             /* Firmware IO Firmware Errors */
  66         atomic64_t scsi_errs;           /* Target hits check condition */
  67 };
  68
  69 struct snic_misc_stats {
  70         u64     last_isr_time;
  71         u64     last_ack_time;
  72         atomic64_t isr_cnt;
  73         atomic64_t max_cq_ents;         /* Max CQ Entries */
  74         atomic64_t data_cnt_mismat;     /* Data Count Mismatch */
  75         atomic64_t io_tmo;
  76         atomic64_t io_aborted;
  77         atomic64_t sgl_inval;           /* SGL Invalid */
  78         atomic64_t abts_wq_alloc_fail;  /* Abort Path WQ desc alloc failure */
  79         atomic64_t devrst_wq_alloc_fail;/* Device Reset - WQ desc alloc fail */
  80         atomic64_t wq_alloc_fail;       /* IO WQ desc alloc failure */
  81         atomic64_t no_icmnd_itmf_cmpls;
  82         atomic64_t io_under_run;
  83         atomic64_t qfull;
  84         atomic64_t tgt_not_rdy;
  85 };
  86
  87 struct snic_stats {
  88         struct snic_io_stats io;
  89         struct snic_abort_stats abts;
  90         struct snic_reset_stats reset;
  91         struct snic_fw_stats fw;
  92         struct snic_misc_stats misc;
  93         atomic64_t io_cmpl_skip;
  94 };
  95
  96 int snic_stats_debugfs_init(struct snic *);
  97 void snic_stats_debugfs_remove(struct snic *);
  98
  99 /* Auxillary function to update active IO counter */
 100 static inline void
 101 snic_stats_update_active_ios(struct snic_stats *s_stats)
 102 {
 103         struct snic_io_stats *io = &s_stats->io;
 104         u32 nr_active_ios;
 105
 106         nr_active_ios = atomic64_inc_return(&io->active);
 107         if (atomic64_read(&io->max_active) < nr_active_ios)
 108                 atomic64_set(&io->max_active, nr_active_ios);
 109
 110         atomic64_inc(&io->num_ios);
 111 }
 112
 113 /* Auxillary function to update IO completion counter */
 114 static inline void
 115 snic_stats_update_io_cmpl(struct snic_stats *s_stats)
 116 {
 117         atomic64_dec(&s_stats->io.active);
 118         if (unlikely(atomic64_read(&s_stats->io_cmpl_skip)))
 119                 atomic64_dec(&s_stats->io_cmpl_skip);
 120         else
 121                 atomic64_inc(&s_stats->io.compl);
 122 }
 123 #endif /* __SNIC_STATS_H */