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| author | Yi Zou <yi.zou@intel.com> | 2009-11-20 14:55:08 -0800 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2009-12-04 12:01:56 -0600 |
| commit | f3da80e76142d63a6849556461906fbe118d1442 (patch) | |
| tree | 1877df06f90937f7136ee7d59ab0f01af097ee63 /drivers/scsi/fcoe/libfcoe.c | |
| parent | 2ec8493f962d55ae85c6716db414c645a6578333 (diff) | |
| download | kernel_samsung_aries-f3da80e76142d63a6849556461906fbe118d1442.zip kernel_samsung_aries-f3da80e76142d63a6849556461906fbe118d1442.tar.gz kernel_samsung_aries-f3da80e76142d63a6849556461906fbe118d1442.tar.bz2 | |
[SCSI] libfcoe: add tracking FIP Missing Discovery Advertisement count
Add tracking the Missing Discovery Advertisement count for FIP Fiber Channel
Forwarder (FCF) as described in FC-BB-5 Rev2.0 for LESB. The time is 1.5 times
the FKA_ADV_PERIOD of the corresponding FCF.
Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/fcoe/libfcoe.c')
| -rw-r--r-- | drivers/scsi/fcoe/libfcoe.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/scsi/fcoe/libfcoe.c b/drivers/scsi/fcoe/libfcoe.c index 34800af..9823291 100644 --- a/drivers/scsi/fcoe/libfcoe.c +++ b/drivers/scsi/fcoe/libfcoe.c @@ -562,14 +562,28 @@ EXPORT_SYMBOL(fcoe_ctlr_els_send); * times its keep-alive period including fuzz. * * In addition, determine the time when an FCF selection can occur. + * + * Also, increment the MissDiscAdvCount when no advertisement is received + * for the corresponding FCF for 1.5 * FKA_ADV_PERIOD (FC-BB-5 LESB). */ static void fcoe_ctlr_age_fcfs(struct fcoe_ctlr *fip) { struct fcoe_fcf *fcf; struct fcoe_fcf *next; unsigned long sel_time = 0; + unsigned long mda_time = 0; list_for_each_entry_safe(fcf, next, &fip->fcfs, list) { + mda_time = fcf->fka_period + (fcf->fka_period >> 1); + if ((fip->sel_fcf == fcf) && + (time_after(jiffies, fcf->time + mda_time))) { + mod_timer(&fip->timer, jiffies + mda_time); + fc_lport_get_stats(fip->lp)->MissDiscAdvCount++; + printk(KERN_INFO "libfcoe: host%d: Missing Discovery " + "Advertisement for fab %llx count %lld\n", + fip->lp->host->host_no, fcf->fabric_name, + fc_lport_get_stats(fip->lp)->MissDiscAdvCount); + } if (time_after(jiffies, fcf->time + fcf->fka_period * 3 + msecs_to_jiffies(FIP_FCF_FUZZ * 3))) { if (fip->sel_fcf == fcf) |