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[SCSI] fnic: FC stat param seconds_since_last_reset not getting updated

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Code to reset fc_host statistics.
echo 1 > /sys/class/fc_host/hostX/statistics/reset_statistics clears fc_host stats,
the code also issues command to fnic firmware to clear vnic stats.

Signed-off-by: Narsimhulu Musini <nmusini@cisco.com>
Signed-off-by: Hiral Patel <hiralpat@cisco.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Narsimhulu Musini 2013-09-09 13:31:45 -07:00 committed by James Bottomley
parent 984f1733fc
commit 1adee04011
2 changed files with 112 additions and 1 deletions
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5
drivers/scsi/fnic/fnic.h
View File

@ -154,6 +154,9 @@ do { \
FNIC_CHECK_LOGGING(FNIC_ISR_LOGGING, \
shost_printk(kern_level, host, fmt, ##args);)
#define FNIC_MAIN_NOTE(kern_level, host, fmt, args...) \
shost_printk(kern_level, host, fmt, ##args)
extern const char *fnic_state_str[];
enum fnic_intx_intr_index {
@ -215,6 +218,7 @@ struct fnic {
struct vnic_stats *stats;
unsigned long stats_time; /* time of stats update */
unsigned long stats_reset_time; /* time of stats reset */
struct vnic_nic_cfg *nic_cfg;
char name[IFNAMSIZ];
struct timer_list notify_timer; /* used for MSI interrupts */
@ -359,4 +363,5 @@ fnic_chk_state_flags_locked(struct fnic *fnic, unsigned long st_flags)
return ((fnic->state_flags & st_flags) == st_flags);
}
void __fnic_set_state_flags(struct fnic *, unsigned long, unsigned long);
void fnic_dump_fchost_stats(struct Scsi_Host *, struct fc_host_statistics *);
#endif /* _FNIC_H_ */

108
drivers/scsi/fnic/fnic_main.c
View File

@ -126,6 +126,7 @@ fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
static void fnic_get_host_speed(struct Scsi_Host *shost);
static struct scsi_transport_template *fnic_fc_transport;
static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
static void fnic_reset_host_stats(struct Scsi_Host *);
static struct fc_function_template fnic_fc_functions = {
@ -153,6 +154,7 @@ static struct fc_function_template fnic_fc_functions = {
.set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo,
.issue_fc_host_lip = fnic_reset,
.get_fc_host_stats = fnic_get_stats,
.reset_fc_host_stats = fnic_reset_host_stats,
.dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
.terminate_rport_io = fnic_terminate_rport_io,
.bsg_request = fc_lport_bsg_request,
@ -206,13 +208,116 @@ static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
stats->invalid_crc_count = vs->rx.rx_crc_errors;
stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ;
stats->seconds_since_last_reset =
(jiffies - fnic->stats_reset_time) / HZ;
stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
return stats;
}
/*
* fnic_dump_fchost_stats
* note : dumps fc_statistics into system logs
*/
void fnic_dump_fchost_stats(struct Scsi_Host *host,
struct fc_host_statistics *stats)
{
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: seconds since last reset = %llu\n",
stats->seconds_since_last_reset);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: tx frames = %llu\n",
stats->tx_frames);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: tx words = %llu\n",
stats->tx_words);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: rx frames = %llu\n",
stats->rx_frames);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: rx words = %llu\n",
stats->rx_words);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: lip count = %llu\n",
stats->lip_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: nos count = %llu\n",
stats->nos_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: error frames = %llu\n",
stats->error_frames);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: dumped frames = %llu\n",
stats->dumped_frames);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: link failure count = %llu\n",
stats->link_failure_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: loss of sync count = %llu\n",
stats->loss_of_sync_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: loss of signal count = %llu\n",
stats->loss_of_signal_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: prim seq protocol err count = %llu\n",
stats->prim_seq_protocol_err_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: invalid tx word count= %llu\n",
stats->invalid_tx_word_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: invalid crc count = %llu\n",
stats->invalid_crc_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: fcp input requests = %llu\n",
stats->fcp_input_requests);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: fcp output requests = %llu\n",
stats->fcp_output_requests);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: fcp control requests = %llu\n",
stats->fcp_control_requests);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: fcp input megabytes = %llu\n",
stats->fcp_input_megabytes);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: fcp output megabytes = %llu\n",
stats->fcp_output_megabytes);
return;
}
/*
* fnic_reset_host_stats : clears host stats
* note : called when reset_statistics set under sysfs dir
*/
static void fnic_reset_host_stats(struct Scsi_Host *host)
{
int ret;
struct fc_lport *lp = shost_priv(host);
struct fnic *fnic = lport_priv(lp);
struct fc_host_statistics *stats;
unsigned long flags;
/* dump current stats, before clearing them */
stats = fnic_get_stats(host);
fnic_dump_fchost_stats(host, stats);
spin_lock_irqsave(&fnic->fnic_lock, flags);
ret = vnic_dev_stats_clear(fnic->vdev);
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
if (ret) {
FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
"fnic: Reset vnic stats failed"
" 0x%x", ret);
return;
}
fnic->stats_reset_time = jiffies;
memset(stats, 0, sizeof(*stats));
return;
}
void fnic_log_q_error(struct fnic *fnic)
{
unsigned int i;
@ -719,6 +824,7 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
fc_lport_init_stats(lp);
fnic->stats_reset_time = jiffies;
fc_lport_config(lp);