target: Drop unused legacy target_core_fabric_ops API callers

This patch drops the following unused legacy API callers from target_core_fabric.h:

*) TFO->fall_back_to_erl0()
*) TFO->stop_session()
*) TFO->sess_logged_in()
*) TFO->is_state_remove()

This patch also removes the stub usage in loopback, tcm_fc, iscsi_target,
and ib_srpt fabric modules.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

9 files changed, 0 insertions, 156 deletions

diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 3290a57b248e..6735b63d96f0 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -3521,25 +3521,6 @@ static void srpt_close_session(struct se_session *se_sess)
 }
 
 /**
- * To do: Find out whether stop_session() has a meaning for transports
- * other than iSCSI.
- */
-static void srpt_stop_session(struct se_session *se_sess, int sess_sleep,
-                              int conn_sleep)
-{
-}
-
-static void srpt_reset_nexus(struct se_session *sess)
-{
-        printk(KERN_ERR "This is the SRP protocol, not iSCSI\n");
-}
-
-static int srpt_sess_logged_in(struct se_session *se_sess)
-{
-        return true;
-}
-
-/**
  * srpt_sess_get_index() - Return the value of scsiAttIntrPortIndex (SCSI-MIB).
  *
  * A quote from RFC 4455 (SCSI-MIB) about this MIB object:
@@ -3583,11 +3564,6 @@ static u16 srpt_get_fabric_sense_len(void)
         return 0;
 }
 
-static int srpt_is_state_remove(struct se_cmd *se_cmd)
-{
-        return 0;
-}
-
 /**
  * srpt_parse_i_port_id() - Parse an initiator port ID.
  * @name: ASCII representation of a 128-bit initiator port ID.
@@ -3957,9 +3933,6 @@ static struct target_core_fabric_ops srpt_template = {
         .check_stop_free                = srpt_check_stop_free,
         .shutdown_session               = srpt_shutdown_session,
         .close_session                  = srpt_close_session,
-        .stop_session                   = srpt_stop_session,
-        .fall_back_to_erl0              = srpt_reset_nexus,
-        .sess_logged_in                 = srpt_sess_logged_in,
         .sess_get_index                 = srpt_sess_get_index,
         .sess_get_initiator_sid         = NULL,
         .write_pending                  = srpt_write_pending,
@@ -3972,7 +3945,6 @@ static struct target_core_fabric_ops srpt_template = {
         .queue_tm_rsp                   = srpt_queue_response,
         .get_fabric_sense_len           = srpt_get_fabric_sense_len,
         .set_fabric_sense_len           = srpt_set_fabric_sense_len,
-        .is_state_remove                = srpt_is_state_remove,
         /*
          * Setup function pointers for generic logic in
          * target_core_fabric_configfs.c
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index 1174f74f4fbc..00c58cc82c85 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -1503,28 +1503,6 @@ static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
         return cmd->i_state;
 }
 
-static int iscsi_is_state_remove(struct se_cmd *se_cmd)
-{
-        struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
-
-        return (cmd->i_state == ISTATE_REMOVE);
-}
-
-static int lio_sess_logged_in(struct se_session *se_sess)
-{
-        struct iscsi_session *sess = se_sess->fabric_sess_ptr;
-        int ret;
-        /*
-         * Called with spin_lock_bh(&tpg_lock); and
-         * spin_lock(&se_tpg->session_lock); held.
-         */
-        spin_lock(&sess->conn_lock);
-        ret = (sess->session_state != TARG_SESS_STATE_LOGGED_IN);
-        spin_unlock(&sess->conn_lock);
-
-        return ret;
-}
-
 static u32 lio_sess_get_index(struct se_session *se_sess)
 {
         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
@@ -1718,23 +1696,6 @@ static void lio_tpg_close_session(struct se_session *se_sess)
         iscsit_close_session(sess);
 }
 
-static void lio_tpg_stop_session(
-        struct se_session *se_sess,
-        int sess_sleep,
-        int conn_sleep)
-{
-        struct iscsi_session *sess = se_sess->fabric_sess_ptr;
-
-        iscsit_stop_session(sess, sess_sleep, conn_sleep);
-}
-
-static void lio_tpg_fall_back_to_erl0(struct se_session *se_sess)
-{
-        struct iscsi_session *sess = se_sess->fabric_sess_ptr;
-
-        iscsit_fall_back_to_erl0(sess);
-}
-
 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
 {
         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
@@ -1798,9 +1759,6 @@ int iscsi_target_register_configfs(void)
         fabric->tf_ops.release_cmd = &lio_release_cmd;
         fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
         fabric->tf_ops.close_session = &lio_tpg_close_session;
-        fabric->tf_ops.stop_session = &lio_tpg_stop_session;
-        fabric->tf_ops.fall_back_to_erl0 = &lio_tpg_fall_back_to_erl0;
-        fabric->tf_ops.sess_logged_in = &lio_sess_logged_in;
         fabric->tf_ops.sess_get_index = &lio_sess_get_index;
         fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
         fabric->tf_ops.write_pending = &lio_write_pending;
@@ -1814,7 +1772,6 @@ int iscsi_target_register_configfs(void)
         fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
         fabric->tf_ops.set_fabric_sense_len = &lio_set_fabric_sense_len;
         fabric->tf_ops.get_fabric_sense_len = &lio_get_fabric_sense_len;
-        fabric->tf_ops.is_state_remove = &iscsi_is_state_remove;
         /*
          * Setup function pointers for generic logic in target_core_fabric_configfs.c
          */
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index 041673e9d2db..026dffa0ed5a 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -736,22 +736,6 @@ static u32 tcm_loop_get_inst_index(struct se_portal_group *se_tpg)
         return 1;
 }
 
-static int tcm_loop_is_state_remove(struct se_cmd *se_cmd)
-{
-        /*
-         * Assume struct scsi_cmnd is not in remove state..
-         */
-        return 0;
-}
-
-static int tcm_loop_sess_logged_in(struct se_session *se_sess)
-{
-        /*
-         * Assume that TL Nexus is always active
-         */
-        return 1;
-}
-
 static u32 tcm_loop_sess_get_index(struct se_session *se_sess)
 {
         return 1;
@@ -785,19 +769,6 @@ static void tcm_loop_close_session(struct se_session *se_sess)
         return;
 };
 
-static void tcm_loop_stop_session(
-        struct se_session *se_sess,
-        int sess_sleep,
-        int conn_sleep)
-{
-        return;
-}
-
-static void tcm_loop_fall_back_to_erl0(struct se_session *se_sess)
-{
-        return;
-}
-
 static int tcm_loop_write_pending(struct se_cmd *se_cmd)
 {
         /*
@@ -1391,9 +1362,6 @@ static int tcm_loop_register_configfs(void)
         fabric->tf_ops.release_cmd = &tcm_loop_release_cmd;
         fabric->tf_ops.shutdown_session = &tcm_loop_shutdown_session;
         fabric->tf_ops.close_session = &tcm_loop_close_session;
-        fabric->tf_ops.stop_session = &tcm_loop_stop_session;
-        fabric->tf_ops.fall_back_to_erl0 = &tcm_loop_fall_back_to_erl0;
-        fabric->tf_ops.sess_logged_in = &tcm_loop_sess_logged_in;
         fabric->tf_ops.sess_get_index = &tcm_loop_sess_get_index;
         fabric->tf_ops.sess_get_initiator_sid = NULL;
         fabric->tf_ops.write_pending = &tcm_loop_write_pending;
@@ -1410,7 +1378,6 @@ static int tcm_loop_register_configfs(void)
         fabric->tf_ops.queue_tm_rsp = &tcm_loop_queue_tm_rsp;
         fabric->tf_ops.set_fabric_sense_len = &tcm_loop_set_fabric_sense_len;
         fabric->tf_ops.get_fabric_sense_len = &tcm_loop_get_fabric_sense_len;
-        fabric->tf_ops.is_state_remove = &tcm_loop_is_state_remove;
 
         tf_cg = &fabric->tf_group;
         /*
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 2ecde0d4d4e5..72bd7f5d6795 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -421,18 +421,6 @@ static int target_fabric_tf_ops_check(
                 pr_err("Missing tfo->close_session()\n");
                 return -EINVAL;
         }
-        if (!tfo->stop_session) {
-                pr_err("Missing tfo->stop_session()\n");
-                return -EINVAL;
-        }
-        if (!tfo->fall_back_to_erl0) {
-                pr_err("Missing tfo->fall_back_to_erl0()\n");
-                return -EINVAL;
-        }
-        if (!tfo->sess_logged_in) {
-                pr_err("Missing tfo->sess_logged_in()\n");
-                return -EINVAL;
-        }
         if (!tfo->sess_get_index) {
                 pr_err("Missing tfo->sess_get_index()\n");
                 return -EINVAL;
@@ -477,10 +465,6 @@ static int target_fabric_tf_ops_check(
                 pr_err("Missing tfo->get_fabric_sense_len()\n");
                 return -EINVAL;
         }
-        if (!tfo->is_state_remove) {
-                pr_err("Missing tfo->is_state_remove()\n");
-                return -EINVAL;
-        }
         /*
          * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn()
          * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in
diff --git a/drivers/target/tcm_fc/tcm_fc.h b/drivers/target/tcm_fc/tcm_fc.h
index 7906b9f8eba7..524b97683983 100644
--- a/drivers/target/tcm_fc/tcm_fc.h
+++ b/drivers/target/tcm_fc/tcm_fc.h
@@ -141,11 +141,8 @@ extern struct target_fabric_configfs *ft_configfs;
 void ft_sess_put(struct ft_sess *);
 int ft_sess_shutdown(struct se_session *);
 void ft_sess_close(struct se_session *);
-void ft_sess_stop(struct se_session *, int, int);
-int ft_sess_logged_in(struct se_session *);
 u32 ft_sess_get_index(struct se_session *);
 u32 ft_sess_get_port_name(struct se_session *, unsigned char *, u32);
-void ft_sess_set_erl0(struct se_session *);
 
 void ft_lport_add(struct fc_lport *, void *);
 void ft_lport_del(struct fc_lport *, void *);
@@ -163,7 +160,6 @@ int ft_write_pending_status(struct se_cmd *);
 u32 ft_get_task_tag(struct se_cmd *);
 int ft_get_cmd_state(struct se_cmd *);
 int ft_queue_tm_resp(struct se_cmd *);
-int ft_is_state_remove(struct se_cmd *);
 
 /*
  * other internal functions.
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c
index 17ffc82274a4..b831461156bf 100644
--- a/drivers/target/tcm_fc/tfc_cmd.c
+++ b/drivers/target/tcm_fc/tfc_cmd.c
@@ -244,11 +244,6 @@ int ft_get_cmd_state(struct se_cmd *se_cmd)
         return 0;
 }
 
-int ft_is_state_remove(struct se_cmd *se_cmd)
-{
-        return 0;       /* XXX TBD */
-}
-
 /*
  * FC sequence response handler for follow-on sequences (data) and aborts.
  */
diff --git a/drivers/target/tcm_fc/tfc_conf.c b/drivers/target/tcm_fc/tfc_conf.c
index 73852fbc857b..f357039349ba 100644
--- a/drivers/target/tcm_fc/tfc_conf.c
+++ b/drivers/target/tcm_fc/tfc_conf.c
@@ -529,9 +529,6 @@ static struct target_core_fabric_ops ft_fabric_ops = {
         .release_cmd =                  ft_release_cmd,
         .shutdown_session =             ft_sess_shutdown,
         .close_session =                ft_sess_close,
-        .stop_session =                 ft_sess_stop,
-        .fall_back_to_erl0 =            ft_sess_set_erl0,
-        .sess_logged_in =               ft_sess_logged_in,
         .sess_get_index =               ft_sess_get_index,
         .sess_get_initiator_sid =       NULL,
         .write_pending =                ft_write_pending,
@@ -544,7 +541,6 @@ static struct target_core_fabric_ops ft_fabric_ops = {
         .queue_tm_rsp =                 ft_queue_tm_resp,
         .get_fabric_sense_len =         ft_get_fabric_sense_len,
         .set_fabric_sense_len =         ft_set_fabric_sense_len,
-        .is_state_remove =              ft_is_state_remove,
         /*
          * Setup function pointers for generic logic in
          * target_core_fabric_configfs.c
diff --git a/drivers/target/tcm_fc/tfc_sess.c b/drivers/target/tcm_fc/tfc_sess.c
index 4c0507cf808c..a1d1f3c86447 100644
--- a/drivers/target/tcm_fc/tfc_sess.c
+++ b/drivers/target/tcm_fc/tfc_sess.c
@@ -338,20 +338,6 @@ void ft_sess_close(struct se_session *se_sess)
         synchronize_rcu();              /* let transport deregister happen */
 }
 
-void ft_sess_stop(struct se_session *se_sess, int sess_sleep, int conn_sleep)
-{
-        struct ft_sess *sess = se_sess->fabric_sess_ptr;
-
-        pr_debug("port_id %x\n", sess->port_id);
-}
-
-int ft_sess_logged_in(struct se_session *se_sess)
-{
-        struct ft_sess *sess = se_sess->fabric_sess_ptr;
-
-        return sess->port_id != -1;
-}
-
 u32 ft_sess_get_index(struct se_session *se_sess)
 {
         struct ft_sess *sess = se_sess->fabric_sess_ptr;
@@ -367,11 +353,6 @@ u32 ft_sess_get_port_name(struct se_session *se_sess,
         return ft_format_wwn(buf, len, sess->port_name);
 }
 
-void ft_sess_set_erl0(struct se_session *se_sess)
-{
-        /* XXX TBD called when out of memory */
-}
-
 /*
  * libfc ops involving sessions.
  */
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
index 032c48753cfa..10c690809601 100644
--- a/include/target/target_core_fabric.h
+++ b/include/target/target_core_fabric.h
@@ -58,9 +58,6 @@ struct target_core_fabric_ops {
          */
         int (*shutdown_session)(struct se_session *);
         void (*close_session)(struct se_session *);
-        void (*stop_session)(struct se_session *, int, int);
-        void (*fall_back_to_erl0)(struct se_session *);
-        int (*sess_logged_in)(struct se_session *);
         u32 (*sess_get_index)(struct se_session *);
         /*
          * Used only for SCSI fabrics that contain multi-value TransportIDs
@@ -78,7 +75,6 @@ struct target_core_fabric_ops {
         int (*queue_tm_rsp)(struct se_cmd *);
         u16 (*set_fabric_sense_len)(struct se_cmd *, u32);
         u16 (*get_fabric_sense_len)(void);
-        int (*is_state_remove)(struct se_cmd *);
         /*
          * fabric module calls for target_core_fabric_configfs.c
          */