On 10/21/19 12:05 PM, Daniel Wagner wrote:
> The initial lpfc_desc_set_adisc implementation dea3101e0a5c ("lpfc:
> add Emulex FC driver version 8.0.28") enabled ADISC if
>
> cfg_use_adisc && RSCN_MODE && FCP_2_DEVICE
>
> In commit 92d7f7b0cde3 ("[SCSI] lpfc: NPIV: add NPIV support on top of
> SLI-3") this changed to
>
> (cfg_use_adisc && RSC_MODE) || FCP_2_DEVICE
>
> and later in ffc954936b13 ("[SCSI] lpfc 8.3.13: FC Discovery Fixes and
> enhancements.") to
>
> (cfg_use_adisc && RSC_MODE) || (FCP_2_DEVICe && FCP_TARGET)
>
> A customer reports that after a Devlos, an ADISC failure is logged. It
> turns out the ADISC flag is set even the user explicitly set
> lpfc_use_adisc = 0.
>
> [Sat Dec 22 22:55:58 2018] lpfc 0000:82:00.0: 2:(0):0203 Devloss timeout on WWPN 50:01:43:80:12:8e:40:20 NPort x05df00 Data: x82000000 x8 xa
> [Sat Dec 22 23:08:20 2018] lpfc 0000:82:00.0: 2:(0):2755 ADISC failure DID:05DF00 Status:x9/x70000
>
> Fixes: 92d7f7b0cde3 ("[SCSI] lpfc: NPIV: add NPIV support on top of SLI-3")
> Cc: James Smart <James.Smart@xxxxxxxxxx>
> Cc: Alex Iannicelli <alex.iannicelli@xxxxxxxxxx>
> Signed-off-by: Daniel Wagner <dwagner@xxxxxxx>
> ---
> Hi,
>
> Unfortunatly, I don't really know all the procotols involved. So this
> is just a rough guess what is wrong.
>
> Thanks,
> Daniel
>
> drivers/scsi/lpfc/lpfc_nportdisc.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
> index cc6b1b0bae83..d27ae84326df 100644
> --- a/drivers/scsi/lpfc/lpfc_nportdisc.c
> +++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
> @@ -940,9 +940,9 @@ lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
>
> if (!(vport->fc_flag & FC_PT2PT)) {
> /* Check config parameter use-adisc or FCP-2 */
> - if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
> + if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
> ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
> - (ndlp->nlp_type & NLP_FCP_TARGET))) {
> + (ndlp->nlp_type & NLP_FCP_TARGET)))) {
> spin_lock_irq(shost->host_lock);
> ndlp->nlp_flag |= NLP_NPR_ADISC;
> spin_unlock_irq(shost->host_lock);
>
Looks reasonable.
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@xxxxxxx +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 247165 (AG München), GF: Felix Imendörffer
