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qla2x00t-32gbit: Use explicit LOGO in target mode

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Target makes implicit LOGO on session teardown. LOGO ELS is not send on the
wire and initiator is not aware that target no longer wants talking to
it. Initiator keeps sending I/O requests, target responds with BA_RJT, they
time out and then initiator sends ABORT TASK (ABTS-LS).

Current behaviour incurs unneeded I/O timeout and can be fixed for some
initiators by making explicit LOGO on session deletion.

Link: https://lore.kernel.org/r/20191125165702.1013-3-r.bolshakov@yadro.com
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

[ commit 86196a8fa8a84af1395a28ea0548f2ce6ae9bc22 upstream ]


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8730 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2019-12-26 00:29:20 +00:00
parent 686aa95dcf
commit 5bab3ecb99
4 changed files with 16 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
qla2x00t-32gbit/qla2x00-target/scst_qla2xxx.c
View File

@@ -870,6 +870,8 @@ static int sqa_close_session(struct scst_session *scst_sess)
unsigned long flags;
struct qla_hw_data *ha = fcport->vha->hw;
fcport->explicit_logout = 1;
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
sqa_qla2xxx_put_sess(fcport);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);

1
qla2x00t-32gbit/qla_def.h
View File

@@ -2427,6 +2427,7 @@ typedef struct fc_port {
unsigned int id_changed:1;
unsigned int scan_needed:1;
unsigned int n2n_flag:1;
unsigned int explicit_logout:1;
struct completion nvme_del_done;
uint32_t nvme_prli_service_param;

16
qla2x00t-32gbit/qla_iocb.c
View File

@@ -2411,11 +2411,19 @@ qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx)
static void
qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio)
{
u16 control_flags = LCF_COMMAND_LOGO;
logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
logio->control_flags =
cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
if (!sp->fcport->keep_nport_handle)
logio->control_flags |= cpu_to_le16(LCF_FREE_NPORT);
if (sp->fcport->explicit_logout) {
control_flags |= LCF_EXPL_LOGO|LCF_FREE_NPORT;
} else {
control_flags |= LCF_IMPL_LOGO;
if (!sp->fcport->keep_nport_handle)
control_flags |= LCF_FREE_NPORT;
}
logio->control_flags = cpu_to_le16(control_flags);
logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
logio->port_id[0] = sp->fcport->d_id.b.al_pa;
logio->port_id[1] = sp->fcport->d_id.b.area;

1
qla2x00t-32gbit/qla_target.c
View File

@@ -1117,6 +1117,7 @@ void qlt_free_session_done(struct work_struct *work)
}
}
sess->explicit_logout = 0;
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
sess->free_pending = 0;