[SCSI] libiscsi: add warm target reset tmf support

This implements warm target reset tmf support for
the scsi-ml target reset callback. Previously we would
just drop the session in that callback. This patch will
now try a target reset and if that fails drop the session.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

2 files changed, 4 insertions, 0 deletions

diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index d67dda2b6aa0..66d377b9c72b 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -311,6 +311,8 @@ enum iscsi_param {
         ISCSI_PARAM_IFACE_NAME,
         ISCSI_PARAM_ISID,
         ISCSI_PARAM_INITIATOR_NAME,
+
+        ISCSI_PARAM_TGT_RESET_TMO,
         /* must always be last */
         ISCSI_PARAM_MAX,
 };
@@ -350,6 +352,7 @@ enum iscsi_param {
 #define ISCSI_IFACE_NAME                (1ULL << ISCSI_PARAM_IFACE_NAME)
 #define ISCSI_ISID                      (1ULL << ISCSI_PARAM_ISID)
 #define ISCSI_INITIATOR_NAME            (1ULL << ISCSI_PARAM_INITIATOR_NAME)
+#define ISCSI_TGT_RESET_TMO             (1ULL << ISCSI_PARAM_TGT_RESET_TMO)
 
 /* iSCSI HBA params */
 enum iscsi_host_param {
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index 2db2bc26b1e9..7394e3bc8f4b 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -267,6 +267,7 @@ struct iscsi_session {
         /* configuration */
         int                     abort_timeout;
         int                     lu_reset_timeout;
+        int                     tgt_reset_timeout;
         int                     initial_r2t_en;
         unsigned                max_r2t;
         int                     imm_data_en;