git/linux-cryptodev-2.6
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git synced 2026-05-02 18:17:50 -04:00
Code Issues Packages Projects Releases Wiki Activity

[SCSI] libfc: fix statistics for FCP input/output megabytes

Browse Source 
The statistics for InputMegabytes and OutputMegabytes are
misnamed.  They're accumulating bytes, not megabytes.

The statistic returned via /sys must be in megabytes, however,
which is what the HBA-API wants.  The FCP code needs to accumulate
it in bytes and then divide by 1,000,000 (not 2^20) before it
presented via sysfs.

This affects fcoe.ko only, not fnic.  The fnic driver
correctly by accumulating bytes and then converts to megabytes.

I checked that libhbalinux is using the /sys file directly without
conversion.

BTW, qla2xxx does divide by 2^20, which I'm not fixing here.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Joe Eykholt
2010-11-30 16:20:18 -08:00
committed by James Bottomley
parent ba9cd5d095
commit 5f0e385fda
3 changed files with 12 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/scsi/libfc/fc_fcp.c
View File

@@ -1860,11 +1860,11 @@ static int fc_queuecommand_lck(struct scsi_cmnd *sc_cmd, void (*done)(struct scs
if (sc_cmd->sc_data_direction == DMA_FROM_DEVICE) {
fsp->req_flags = FC_SRB_READ;
stats->InputRequests++;
stats->InputMegabytes += fsp->data_len;
stats->InputBytes += fsp->data_len;
} else if (sc_cmd->sc_data_direction == DMA_TO_DEVICE) {
fsp->req_flags = FC_SRB_WRITE;
stats->OutputRequests++;
stats->OutputMegabytes += fsp->data_len;
stats->OutputBytes += fsp->data_len;
} else {
fsp->req_flags = 0;
stats->ControlRequests++;