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scsi: qla2xxx: Fix session cleanup for N2N

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When connection type is N_Port to N_Port (point-to-point), there
is a possibilty where initiator will not send PLOGI request and
will directly send PRLI. In N2N connection the port has higher
port name sends the PLOGI but not allow to send PRLI if is a
target mode. Only initiator is allowed to send PRLI.

Current driver code deletes old session when it receives PLOGI
request. If we will not receive PLOGI request then we will not
delete old session and create new session. Add check for N2N
with PRLI receive only and trigger cleanup. For this case, the
cleanup requires individual cmd abort instead of using implicit
logout as a broad stroke flush.

Signed-off-by: Krishna Kant <krishna.kant@purestorage.com>
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Quinn Tran
2017-12-28 12:33:24 -08:00
committed by Martin K. Petersen
parent 94d83e3641
commit 9cd883f07a
7 changed files with 381 additions and 158 deletions
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11
drivers/scsi/qla2xxx/qla_def.h
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@@ -3508,6 +3508,7 @@ struct qla_hw_data {
uint32_t detected_lr_sfp:1;
uint32_t using_lr_setting:1;
uint32_t rida_fmt2:1;
} flags;
uint16_t max_exchg;
@@ -4529,6 +4530,16 @@ struct sff_8247_a0 {
#define USER_CTRL_IRQ(_ha) (ql2xuctrlirq && QLA_TGT_MODE_ENABLED() && \
(IS_QLA27XX(_ha) || IS_QLA83XX(_ha)))
#define SAVE_TOPO(_ha) { \
if (_ha->current_topology) \
_ha->prev_topology = _ha->current_topology; \
}
#define N2N_TOPO(ha) \
((ha->prev_topology == ISP_CFG_N && !ha->current_topology) || \
ha->current_topology == ISP_CFG_N || \
!ha->current_topology)
#include "qla_target.h"
#include "qla_gbl.h"
#include "qla_dbg.h"