LXR linux/drivers/scsi/snic/snic

   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
  21struct 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
  39struct 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        atomic64_t q_fail;      /* Abort Queuing Failed */
  46};
  47
  48struct snic_reset_stats {
  49        atomic64_t dev_resets;          /* Device Reset Counter */
  50        atomic64_t dev_reset_fail;      /* Device Reset Failures */
  51        atomic64_t dev_reset_aborts;    /* Device Reset Aborts */
  52        atomic64_t dev_reset_tmo;       /* Device Reset Timeout */
  53        atomic64_t dev_reset_terms;     /* Device Reset terminate */
  54        atomic64_t hba_resets;          /* hba/firmware resets */
  55        atomic64_t hba_reset_cmpl;      /* hba/firmware reset completions */
  56        atomic64_t hba_reset_fail;      /* hba/firmware failures */
  57        atomic64_t snic_resets;         /* snic resets */
  58        atomic64_t snic_reset_compl;    /* snic reset completions */
  59        atomic64_t snic_reset_fail;     /* snic reset failures */
  60};
  61
  62struct snic_fw_stats {
  63        atomic64_t actv_reqs;           /* Active Requests */
  64        atomic64_t max_actv_reqs;       /* Max Active Requests */
  65        atomic64_t out_of_res;          /* Firmware Out Of Resources */
  66        atomic64_t io_errs;             /* Firmware IO Firmware Errors */
  67        atomic64_t scsi_errs;           /* Target hits check condition */
  68};
  69
  70struct snic_misc_stats {
  71        u64     last_isr_time;
  72        u64     last_ack_time;
  73        atomic64_t ack_isr_cnt;
  74        atomic64_t cmpl_isr_cnt;
  75        atomic64_t errnotify_isr_cnt;
  76        atomic64_t max_cq_ents;         /* Max CQ Entries */
  77        atomic64_t data_cnt_mismat;     /* Data Count Mismatch */
  78        atomic64_t io_tmo;
  79        atomic64_t io_aborted;
  80        atomic64_t sgl_inval;           /* SGL Invalid */
  81        atomic64_t abts_wq_alloc_fail;  /* Abort Path WQ desc alloc failure */
  82        atomic64_t devrst_wq_alloc_fail;/* Device Reset - WQ desc alloc fail */
  83        atomic64_t wq_alloc_fail;       /* IO WQ desc alloc failure */
  84        atomic64_t no_icmnd_itmf_cmpls;
  85        atomic64_t io_under_run;
  86        atomic64_t qfull;
  87        atomic64_t qsz_rampup;
  88        atomic64_t qsz_rampdown;
  89        atomic64_t last_qsz;
  90        atomic64_t tgt_not_rdy;
  91};
  92
  93struct snic_stats {
  94        struct snic_io_stats io;
  95        struct snic_abort_stats abts;
  96        struct snic_reset_stats reset;
  97        struct snic_fw_stats fw;
  98        struct snic_misc_stats misc;
  99        atomic64_t io_cmpl_skip;
 100};
 101
 102void snic_stats_debugfs_init(struct snic *);
 103void snic_stats_debugfs_remove(struct snic *);
 104
 105/* Auxillary function to update active IO counter */
 106static inline void
 107snic_stats_update_active_ios(struct snic_stats *s_stats)
 108{
 109        struct snic_io_stats *io = &s_stats->io;
 110        int nr_active_ios;
 111
 112        nr_active_ios = atomic64_read(&io->active);
 113        if (atomic64_read(&io->max_active) < nr_active_ios)
 114                atomic64_set(&io->max_active, nr_active_ios);
 115
 116        atomic64_inc(&io->num_ios);
 117}
 118
 119/* Auxillary function to update IO completion counter */
 120static inline void
 121snic_stats_update_io_cmpl(struct snic_stats *s_stats)
 122{
 123        atomic64_dec(&s_stats->io.active);
 124        if (unlikely(atomic64_read(&s_stats->io_cmpl_skip)))
 125                atomic64_dec(&s_stats->io_cmpl_skip);
 126        else
 127                atomic64_inc(&s_stats->io.compl);
 128}
 129#endif /* __SNIC_STATS_H */
 130