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[SCSI] libfc: update fcp and exch stats 

Updates newly added stats from fc_get_host_stats,
added new function fc_exch_update_stats to
update exches related stats from fc_exch.c
by going thru internal ema_list elements.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Acked-by : Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Vasu Dev 2012-05-25 10:26:54 -07:00 committed by James Bottomley
parent 0f02a66528
commit 4e5fae7adb
3 changed files with 33 additions and 5 deletions
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30
drivers/scsi/libfc/fc_exch.c
View File

@ -99,11 +99,6 @@ struct fc_exch_mgr {
u16 max_xid;
u16 pool_max_index;
/*
* currently exchange mgr stats are updated but not used.
* either stats can be expose via sysfs or remove them
* all together if not used XXX
*/
struct {
atomic_t no_free_exch;
atomic_t no_free_exch_xid;
@ -2155,6 +2150,31 @@ out:
fc_exch_release(ep); /* drop hold from fc_exch_find */
}
/**
* fc_exch_update_stats() - update exches stats to lport
* @lport: The local port to update exchange manager stats
*/
void fc_exch_update_stats(struct fc_lport *lport)
{
struct fc_host_statistics *st;
struct fc_exch_mgr_anchor *ema;
struct fc_exch_mgr *mp;
st = &lport->host_stats;
list_for_each_entry(ema, &lport->ema_list, ema_list) {
mp = ema->mp;
st->fc_no_free_exch += atomic_read(&mp->stats.no_free_exch);
st->fc_no_free_exch_xid +=
atomic_read(&mp->stats.no_free_exch_xid);
st->fc_xid_not_found += atomic_read(&mp->stats.xid_not_found);
st->fc_xid_busy += atomic_read(&mp->stats.xid_busy);
st->fc_seq_not_found += atomic_read(&mp->stats.seq_not_found);
st->fc_non_bls_resp += atomic_read(&mp->stats.non_bls_resp);
}
}
EXPORT_SYMBOL(fc_exch_update_stats);
/**
* fc_exch_mgr_add() - Add an exchange manager to a local port's list of EMs
* @lport: The local port to add the exchange manager to

7
drivers/scsi/libfc/fc_lport.c
View File

@ -329,6 +329,9 @@ struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost)
fc_stats->fcp_control_requests += stats->ControlRequests;
fcp_in_bytes += stats->InputBytes;
fcp_out_bytes += stats->OutputBytes;
fc_stats->fcp_packet_alloc_failures += stats->FcpPktAllocFails;
fc_stats->fcp_packet_aborts += stats->FcpPktAborts;
fc_stats->fcp_frame_alloc_failures += stats->FcpFrameAllocFails;
fc_stats->link_failure_count += stats->LinkFailureCount;
}
fc_stats->fcp_input_megabytes = div_u64(fcp_in_bytes, 1000000);
@ -339,6 +342,10 @@ struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost)
fc_stats->loss_of_signal_count = -1;
fc_stats->prim_seq_protocol_err_count = -1;
fc_stats->dumped_frames = -1;
/* update exches stats */
fc_exch_update_stats(lport);
return fc_stats;
}
EXPORT_SYMBOL(fc_get_host_stats);

1
include/scsi/libfc.h
View File

@ -1121,6 +1121,7 @@ void fc_fill_hdr(struct fc_frame *, const struct fc_frame *,
* EXCHANGE MANAGER LAYER
*****************************/
int fc_exch_init(struct fc_lport *);
void fc_exch_update_stats(struct fc_lport *lport);
struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *,
struct fc_exch_mgr *,
bool (*match)(struct fc_frame *));