diff options
| author | Mike Christie <michael.christie@oracle.com> | 2021-05-25 21:18:18 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-06-02 08:28:23 +0300 |
| commit | 0c72191da68638a479602dd515b587ada913184a (patch) | |
| tree | 8ca74f3199e37cac0b9866bdb4b27aaafe52d039 /drivers/scsi/qedi/qedi_iscsi.c | |
| parent | 2819b4ae2873d50fd55292877b0231ec936c3b2e (diff) | |
| download | linux-0c72191da68638a479602dd515b587ada913184a.tar.xz | |
scsi: qedi: Fix cleanup session block/unblock use
Drivers shouldn't be calling block/unblock session for cmd cleanup because
the functions can change the session state from under libiscsi. This adds
a new a driver level bit so it can block all I/O the host while it drains
the card.
Link: https://lore.kernel.org/r/20210525181821.7617-26-michael.christie@oracle.com
Reviewed-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qedi/qedi_iscsi.c')
| -rw-r--r-- | drivers/scsi/qedi/qedi_iscsi.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/scsi/qedi/qedi_iscsi.c b/drivers/scsi/qedi/qedi_iscsi.c index 0ece2c3b105b..ddb47784eb4a 100644 --- a/drivers/scsi/qedi/qedi_iscsi.c +++ b/drivers/scsi/qedi/qedi_iscsi.c @@ -330,12 +330,22 @@ free_conn: void qedi_mark_device_missing(struct iscsi_cls_session *cls_session) { - iscsi_block_session(cls_session); + struct iscsi_session *session = cls_session->dd_data; + struct qedi_conn *qedi_conn = session->leadconn->dd_data; + + spin_lock_bh(&session->frwd_lock); + set_bit(QEDI_BLOCK_IO, &qedi_conn->qedi->flags); + spin_unlock_bh(&session->frwd_lock); } void qedi_mark_device_available(struct iscsi_cls_session *cls_session) { - iscsi_unblock_session(cls_session); + struct iscsi_session *session = cls_session->dd_data; + struct qedi_conn *qedi_conn = session->leadconn->dd_data; + + spin_lock_bh(&session->frwd_lock); + clear_bit(QEDI_BLOCK_IO, &qedi_conn->qedi->flags); + spin_unlock_bh(&session->frwd_lock); } static int qedi_bind_conn_to_iscsi_cid(struct qedi_ctx *qedi, @@ -800,6 +810,9 @@ static int qedi_task_xmit(struct iscsi_task *task) if (test_bit(QEDI_IN_SHUTDOWN, &qedi_conn->qedi->flags)) return -ENODEV; + if (test_bit(QEDI_BLOCK_IO, &qedi_conn->qedi->flags)) + return -EACCES; + cmd->state = 0; cmd->task = NULL; cmd->use_slowpath = false; |