[SCSI] libiscsi: fix nop handling

During root boot and shutdown the target could send us nops.
At this time iscsid cannot be running, so the target will drop
the session and the boot or shutdown will hang.

To handle this and allow us to better control when to check the network
this patch moves the nop handling to the kernel.

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

2 files changed, 19 insertions, 0 deletions

diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index 8a4426df6c3a..e19e58423166 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -244,6 +244,12 @@ enum iscsi_param {
         ISCSI_PARAM_PASSWORD_IN,
 
         ISCSI_PARAM_FAST_ABORT,
+        ISCSI_PARAM_ABORT_TMO,
+        ISCSI_PARAM_LU_RESET_TMO,
+        ISCSI_PARAM_HOST_RESET_TMO,
+
+        ISCSI_PARAM_PING_TMO,
+        ISCSI_PARAM_RECV_TMO,
         /* must always be last */
         ISCSI_PARAM_MAX,
 };
@@ -275,6 +281,11 @@ enum iscsi_param {
 #define ISCSI_PASSWORD                  (1 << ISCSI_PARAM_PASSWORD)
 #define ISCSI_PASSWORD_IN               (1 << ISCSI_PARAM_PASSWORD_IN)
 #define ISCSI_FAST_ABORT                (1 << ISCSI_PARAM_FAST_ABORT)
+#define ISCSI_ABORT_TMO                 (1 << ISCSI_PARAM_ABORT_TMO)
+#define ISCSI_LU_RESET_TMO              (1 << ISCSI_PARAM_LU_RESET_TMO)
+#define ISCSI_HOST_RESET_TMO            (1 << ISCSI_PARAM_HOST_RESET_TMO)
+#define ISCSI_PING_TMO                  (1 << ISCSI_PARAM_PING_TMO)
+#define ISCSI_RECV_TMO                  (1 << ISCSI_PARAM_RECV_TMO)
 
 /* iSCSI HBA params */
 enum iscsi_host_param {
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index d68f74523f2e..889f51fabab9 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -148,6 +148,12 @@ struct iscsi_conn {
          * conn_stop() flag: stop to recover, stop to terminate
          */
         int                     stop_stage;
+        struct timer_list       transport_timer;
+        unsigned long           last_recv;
+        unsigned long           last_ping;
+        int                     ping_timeout;
+        int                     recv_timeout;
+        struct iscsi_mgmt_task  *ping_mtask;
 
         /* iSCSI connection-wide sequencing */
         uint32_t                exp_statsn;
@@ -238,6 +244,8 @@ struct iscsi_session {
         uint32_t                queued_cmdsn;
 
         /* configuration */
+        int                     abort_timeout;
+        int                     lu_reset_timeout;
         int                     initial_r2t_en;
         unsigned                max_r2t;
         int                     imm_data_en;