On 11/20/19, 4:52 PM, "Quinn Tran" <qutran@xxxxxxxxxxx> wrote:
According to FC-LS-3 (Fibre Channel Link Services) 6.3.2.4 "N_Port Login - No Fabric present", if both parties in the point-to-point connection know N_Port_Names of each other, Nx_Port with the highest N_Port_name shall transmit PLOGI. The specification sets no restrictions on the port role that should send PLOGI.
However, FCP-4 (Fibre Channel Protocol for SCSI, Fourth Version) 6.2 "Overview of Process Login and Process Logout", instructs that in point-to-point topology, initiator shall send explicit PRLI ELS.
The change fixes stuck P2P login, when target WWPN is higher than initiator WWPN.
Cc: Quinn Tran <qutran@xxxxxxxxxxx>
Cc: Himanshu Madhani <hmadhani@xxxxxxxxxxx>
Signed-off-by: Roman Bolshakov <r.bolshakov@xxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_init.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index fcb309be50d9..12391815be06 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -1527,10 +1527,6 @@ int qla24xx_fcport_handle_login(struct scsi_qla_host *vha, fc_port_t *fcport)
}
}
- /* for pure Target Mode. Login will not be initiated */
- if (vha->host->active_mode == MODE_TARGET)
- return 0;
-
QT: Nack. Leave this hunk. Instead do this
if (vha->host->active_mode == MODE_TARGET) && !N2N_TOPO(vha->hw)
--
Agree. Please resend with update.
if (fcport->flags & FCF_ASYNC_SENT) {
set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
return 0;
@@ -1720,6 +1716,10 @@ void qla24xx_handle_relogin_event(scsi_qla_host_t *vha, void qla_handle_els_plogi_done(scsi_qla_host_t *vha,
struct event_arg *ea)
{
+ /* for pure Target Mode, PRLI will not be initiated */
+ if (vha->host->active_mode == MODE_TARGET)
+ return;
+
QT: Ack.
ql_dbg(ql_dbg_disc, vha, 0x2118,
"%s %d %8phC post PRLI\n",
__func__, __LINE__, ea->fcport->port_name);
--
2.24.0
