Hi James, This series is applied on top of patch series sent on June 10 [PATCH 0/9] qla2xxx: Patches for scsi "misc" branch (http://marc.info/?l=linux-scsi&m=143395156920505&w=2) These set of patches addresses issue with reuse of stale command found in a customer enviorment. Here's sequence of events which could result into this reuse of stale command which could potentially lead to data corruption. - Backend driver goes out of sync with front end driver due to session management problem. - During this time a session receives a NEW login by the same initiator. - All the commands from previous session are not flushed before establishing a new session/connection. - These stale commands leaks into new session resulting into case where they could potentially share same Exchange ID. In such case data can cross path between old and new session when the frontend driver/fabric driver allows a new connection to be established without backend knowledge. To fix this problem, old session is destroyed first before creating new session. The session destroy process would wait for all existing commands to finish. The Changes from v1 of this series are: - Rebased patch series on top of v4.2.0-rc1+. - Dropped following patches and will be sent as seperate series. qla2xxx: Added interface to send ELS commands from driver. qla2xxx: delete session if initiator is gone from FW qla2xxx: wait for all conflicts before ack'ing PLOGI Please apply these patches to scsi tree at your earliest for inclusion in the next mainline merge window. Thanks, Himanshu Alexei Potashnik (6): qla2xxx: delay plogi/prli ack until existing sessions are deleted qla2xxx: Abort stale cmds on qla_tgt_wq when plogi arrives qla2xxx: added sess generations to detect RSCN update races qla2xxx: disable scsi_transport_fc registration in target mode qla2xxx: drop cmds/tmrs arrived while session is being deleted qla2xxx: terminate exchange when command is aborted by LIO Roland Dreier (1): qla2xxx: kill sessions/log out initiator on RSCN and port down events Swapnil Nagle (1): qla2xxx: cleanup cmd in qla workqueue before processing TMR drivers/scsi/qla2xxx/qla_dbg.c | 6 +- drivers/scsi/qla2xxx/qla_def.h | 12 + drivers/scsi/qla2xxx/qla_init.c | 188 ++++++++-- drivers/scsi/qla2xxx/qla_iocb.c | 3 + drivers/scsi/qla2xxx/qla_os.c | 11 +- drivers/scsi/qla2xxx/qla_target.c | 714 +++++++++++++++++++++++++++++++++--- drivers/scsi/qla2xxx/qla_target.h | 69 +++- drivers/scsi/qla2xxx/tcm_qla2xxx.c | 23 +- 8 files changed, 906 insertions(+), 120 deletions(-) -- 1.7.7 -- To unsubscribe from this list: send the line "unsubscribe target-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
