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authorAlexei Potashnik <alexei@purestorage.com>2015-07-14 23:00:46 +0300
committerNicholas Bellinger <nab@linux-iscsi.org>2015-07-25 00:19:41 +0300
commitdf673274fa4896f25f0bf348d2a3535d74b4cbec (patch)
treead159532d4f462624e2051e128a42c3f4f3c4ad9 /drivers/scsi/qla2xxx/qla_dbg.c
parentdaddf5cf9b5c68b81b2bb7133f1dd0fda4552d0b (diff)
downloadlinux-df673274fa4896f25f0bf348d2a3535d74b4cbec.tar.xz
qla2xxx: added sess generations to detect RSCN update races
RSCN processing in qla2xxx driver can run in parallel with ELS/IO processing. As such the decision to remove disappeared fc port's session could be stale, because a new login sequence has occurred since and created a brand new session. Previous mechanism of dealing with this by delaying deletion request was prone to erroneous deletions if the event that was supposed to cancel the deletion never arrived or has been delayed in processing. New mechanism relies on a time-like generation counter to serialize RSCN updates relative to ELS/IO updates. 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>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_dbg.c')
-rw-r--r--drivers/scsi/qla2xxx/qla_dbg.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
index 05793b7199a4..8b011aef12bd 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -68,7 +68,7 @@
* | | | 0xd101-0xd1fe |
* | | | 0xd214-0xd2fe |
* | Target Mode | 0xe080 | |
- * | Target Mode Management | 0xf091 | 0xf002 |
+ * | Target Mode Management | 0xf096 | 0xf002 |
* | | | 0xf046-0xf049 |
* | Target Mode Task Management | 0x1000d | |
* ----------------------------------------------------------------------