snic_stats.h
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/*
* Copyright 2014 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __SNIC_STATS_H
#define __SNIC_STATS_H
struct snic_io_stats {
atomic64_t active; /* Active IOs */
atomic64_t max_active; /* Max # active IOs */
atomic64_t max_sgl; /* Max # SGLs for any IO */
atomic64_t max_time; /* Max time to process IO */
atomic64_t max_qtime; /* Max time to Queue the IO */
atomic64_t max_cmpl_time; /* Max time to complete the IO */
atomic64_t sgl_cnt[SNIC_MAX_SG_DESC_CNT]; /* SGL Counters */
atomic64_t max_io_sz; /* Max IO Size */
atomic64_t compl; /* IO Completions */
atomic64_t fail; /* IO Failures */
atomic64_t req_null; /* req or req info is NULL */
atomic64_t alloc_fail; /* Alloc Failures */
atomic64_t sc_null;
atomic64_t io_not_found; /* IO Not Found */
atomic64_t num_ios; /* Number of IOs */
};
struct snic_abort_stats {
atomic64_t num; /* Abort counter */
atomic64_t fail; /* Abort Failure Counter */
atomic64_t drv_tmo; /* Abort Driver Timeouts */
atomic64_t fw_tmo; /* Abort Firmware Timeouts */
atomic64_t io_not_found;/* Abort IO Not Found */
};
struct snic_reset_stats {
atomic64_t dev_resets; /* Device Reset Counter */
atomic64_t dev_reset_fail; /* Device Reset Failures */
atomic64_t dev_reset_aborts; /* Device Reset Aborts */
atomic64_t dev_reset_tmo; /* Device Reset Timeout */
atomic64_t dev_reset_terms; /* Device Reset terminate */
atomic64_t hba_resets; /* hba/firmware resets */
atomic64_t hba_reset_cmpl; /* hba/firmware reset completions */
atomic64_t hba_reset_fail; /* hba/firmware failures */
atomic64_t snic_resets; /* snic resets */
atomic64_t snic_reset_compl; /* snic reset completions */
atomic64_t snic_reset_fail; /* snic reset failures */
};
struct snic_fw_stats {
atomic64_t actv_reqs; /* Active Requests */
atomic64_t max_actv_reqs; /* Max Active Requests */
atomic64_t out_of_res; /* Firmware Out Of Resources */
atomic64_t io_errs; /* Firmware IO Firmware Errors */
atomic64_t scsi_errs; /* Target hits check condition */
};
struct snic_misc_stats {
u64 last_isr_time;
u64 last_ack_time;
atomic64_t isr_cnt;
atomic64_t max_cq_ents; /* Max CQ Entries */
atomic64_t data_cnt_mismat; /* Data Count Mismatch */
atomic64_t io_tmo;
atomic64_t io_aborted;
atomic64_t sgl_inval; /* SGL Invalid */
atomic64_t abts_wq_alloc_fail; /* Abort Path WQ desc alloc failure */
atomic64_t devrst_wq_alloc_fail;/* Device Reset - WQ desc alloc fail */
atomic64_t wq_alloc_fail; /* IO WQ desc alloc failure */
atomic64_t no_icmnd_itmf_cmpls;
atomic64_t io_under_run;
atomic64_t qfull;
atomic64_t tgt_not_rdy;
};
struct snic_stats {
struct snic_io_stats io;
struct snic_abort_stats abts;
struct snic_reset_stats reset;
struct snic_fw_stats fw;
struct snic_misc_stats misc;
atomic64_t io_cmpl_skip;
};
int snic_stats_debugfs_init(struct snic *);
void snic_stats_debugfs_remove(struct snic *);
/* Auxillary function to update active IO counter */
static inline void
snic_stats_update_active_ios(struct snic_stats *s_stats)
{
struct snic_io_stats *io = &s_stats->io;
u32 nr_active_ios;
nr_active_ios = atomic64_inc_return(&io->active);
if (atomic64_read(&io->max_active) < nr_active_ios)
atomic64_set(&io->max_active, nr_active_ios);
atomic64_inc(&io->num_ios);
}
/* Auxillary function to update IO completion counter */
static inline void
snic_stats_update_io_cmpl(struct snic_stats *s_stats)
{
atomic64_dec(&s_stats->io.active);
if (unlikely(atomic64_read(&s_stats->io_cmpl_skip)))
atomic64_dec(&s_stats->io_cmpl_skip);
else
atomic64_inc(&s_stats->io.compl);
}
#endif /* __SNIC_STATS_H */