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qla2xxx: disable scsi_transport_fc registration in target mode 

There are multiple reasons for disabling this:

1. It provides no functional benefit. We pretty much only get a few more
sysfs entries for each port, but all that information is already
available from /sys/kernel/debug/target/qla-session-X

2. It already only works in private-loop mode. By disabling we'll be
getting more uniform behavior with fabric mode.

3. It creates complications for the new PLOGI handling mechanism:
scsi_transport_fc port deletion timer could race with new session
from initiator and cause logout after successful login.

Cc: <stable@vger.kernel.org> # v3.18+
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Alexei Potashnik 2015-07-14 16:00:47 -04:00 committed by Nicholas Bellinger
parent df673274fa
commit d20ed91bb6
2 changed files with 13 additions and 4 deletions
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14
drivers/scsi/qla2xxx/qla_init.c
View File

@ -3340,8 +3340,7 @@ qla2x00_update_fcport(scsi_qla_host_t *vha, fc_port_t *fcport)
if (IS_QLAFX00(vha->hw)) {
qla2x00_set_fcport_state(fcport, FCS_ONLINE);
qla2x00_reg_remote_port(vha, fcport);
return;
goto reg_port;
}
fcport->login_retry = 0;
fcport->flags &= ~(FCF_LOGIN_NEEDED | FCF_ASYNC_SENT);
@ -3349,7 +3348,16 @@ qla2x00_update_fcport(scsi_qla_host_t *vha, fc_port_t *fcport)
qla2x00_set_fcport_state(fcport, FCS_ONLINE);
qla2x00_iidma_fcport(vha, fcport);
qla24xx_update_fcport_fcp_prio(vha, fcport);
qla2x00_reg_remote_port(vha, fcport);
reg_port:
if (qla_ini_mode_enabled(vha))
qla2x00_reg_remote_port(vha, fcport);
else {
/*
* Create target mode FC NEXUS in qla_target.c
*/
qlt_fc_port_added(vha, fcport);
}
}
/*

3
drivers/scsi/qla2xxx/qla_os.c
View File

@ -3235,7 +3235,8 @@ qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport,
qla2xxx_wake_dpc(base_vha);
} else {
int now;
fc_remote_port_delete(rport);
if (rport)
fc_remote_port_delete(rport);
qlt_do_generation_tick(vha, &now);
qlt_fc_port_deleted(vha, fcport, now);
}