[PATCH 12/29] ibmvfc: add NVMe/FC Implicit Logout and Move Login support

[Tyrel Datwyler]

Add protocol-specific handling for implicit logout and move-login
operations on NVMe/FC targets.

Select the NVMe/FC-specific implicit logout opcode when operating on an
NVMe target and update the associated logging so protocol-specific
operations are visible in debug output. This extends the existing target
relogin and migration-related flows to work with NVMe targets as well as
SCSI targets.

These changes are needed so target reauthentication and target movement
continue to work once NVMe/FC targets are added to the driver's state
machine.

Signed-off-by: Tyrel Datwyler <tyreld@xxxxxxxxxxxxx>
---
 drivers/scsi/ibmvscsi/ibmvfc-core.c | 33 +++++++++++++++++++----------
 1 file changed, 22 insertions(+), 11 deletions(-)

diff --git a/drivers/scsi/ibmvscsi/ibmvfc-core.c b/drivers/scsi/ibmvscsi/ibmvfc-core.c
index 53480d150042..3e3d77e0d517 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc-core.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc-core.c
@@ -4316,7 +4316,7 @@ static void ibmvfc_tgt_implicit_logout_done(struct ibmvfc_event *evt)
 
 	switch (status) {
 	case IBMVFC_MAD_SUCCESS:
-		tgt_dbg(tgt, "Implicit Logout succeeded\n");
+		tgt_dbg(tgt, "%s Implicit Logout succeeded\n", proto_type[tgt->protocol]);
 		break;
 	case IBMVFC_MAD_DRIVER_FAILED:
 		kref_put(&tgt->kref, ibmvfc_release_tgt);
@@ -4324,7 +4324,8 @@ static void ibmvfc_tgt_implicit_logout_done(struct ibmvfc_event *evt)
 		return;
 	case IBMVFC_MAD_FAILED:
 	default:
-		tgt_err(tgt, "Implicit Logout failed: rc=0x%02X\n", status);
+		tgt_err(tgt, "%s Implicit Logout failed: rc=0x%02X\n",
+			proto_type[tgt->protocol], status);
 		break;
 	}
 
@@ -4357,7 +4358,10 @@ static struct ibmvfc_event *__ibmvfc_tgt_get_implicit_logout_evt(struct ibmvfc_t
 	mad = &evt->iu.implicit_logout;
 	memset(mad, 0, sizeof(*mad));
 	mad->common.version = cpu_to_be32(1);
-	mad->common.opcode = cpu_to_be32(IBMVFC_IMPLICIT_LOGOUT);
+	if (tgt->protocol == IBMVFC_PROTO_SCSI)
+		mad->common.opcode = cpu_to_be32(IBMVFC_IMPLICIT_LOGOUT);
+	else
+		mad->common.opcode = cpu_to_be32(IBMVFC_NVMF_IMPLICIT_LOGOUT);
 	mad->common.length = cpu_to_be16(sizeof(*mad));
 	mad->old_scsi_id = cpu_to_be64(tgt->scsi_id);
 	return evt;
@@ -4393,7 +4397,7 @@ static void ibmvfc_tgt_implicit_logout(struct ibmvfc_target *tgt)
 		ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
 		kref_put(&tgt->kref, ibmvfc_release_tgt);
 	} else
-		tgt_dbg(tgt, "Sent Implicit Logout\n");
+		tgt_dbg(tgt, "%s Sent Implicit Logout\n", proto_type[tgt->protocol]);
 }
 
 /**
@@ -4423,7 +4427,8 @@ static void ibmvfc_tgt_implicit_logout_and_del_done(struct ibmvfc_event *evt)
 	else
 		ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT);
 
-	tgt_dbg(tgt, "Implicit Logout %s\n", (status == IBMVFC_MAD_SUCCESS) ? "succeeded" : "failed");
+	tgt_dbg(tgt, "%s Implicit Logout %s\n", proto_type[tgt->protocol],
+		(status == IBMVFC_MAD_SUCCESS) ? "succeeded" : "failed");
 	kref_put(&tgt->kref, ibmvfc_release_tgt);
 	wake_up(&vhost->work_wait_q);
 }
@@ -4456,7 +4461,7 @@ static void ibmvfc_tgt_implicit_logout_and_del(struct ibmvfc_target *tgt)
 		ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
 		kref_put(&tgt->kref, ibmvfc_release_tgt);
 	} else
-		tgt_dbg(tgt, "Sent Implicit Logout\n");
+		tgt_dbg(tgt, "%s Sent Implicit Logout\n", proto_type[tgt->protocol]);
 }
 
 /**
@@ -4476,7 +4481,8 @@ static void ibmvfc_tgt_move_login_done(struct ibmvfc_event *evt)
 	ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
 	switch (status) {
 	case IBMVFC_MAD_SUCCESS:
-		tgt_dbg(tgt, "Move Login succeeded for new scsi_id: %llX\n", tgt->new_scsi_id);
+		tgt_dbg(tgt, "%s Move Login succeeded for new scsi_id: %llX\n",
+			proto_type[tgt->protocol], tgt->new_scsi_id);
 		tgt->ids.node_name = wwn_to_u64(rsp->service_parms.node_name);
 		tgt->ids.port_name = wwn_to_u64(rsp->service_parms.port_name);
 		tgt->scsi_id = tgt->new_scsi_id;
@@ -4497,8 +4503,9 @@ static void ibmvfc_tgt_move_login_done(struct ibmvfc_event *evt)
 		level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_move_login);
 
 		tgt_log(tgt, level,
-			"Move Login failed: new scsi_id: %llX, flags:%x, vios_flags:%x, rc=0x%02X\n",
-			tgt->new_scsi_id, be32_to_cpu(rsp->flags), be16_to_cpu(rsp->vios_flags),
+			"%s Move Login failed: new scsi_id: %llX, flags:%x, vios_flags:%x, rc=0x%02X\n",
+			proto_type[tgt->protocol], tgt->new_scsi_id,
+			be32_to_cpu(rsp->flags), be16_to_cpu(rsp->vios_flags),
 			status);
 		break;
 	}
@@ -4538,7 +4545,10 @@ static void ibmvfc_tgt_move_login(struct ibmvfc_target *tgt)
 	move = &evt->iu.move_login;
 	memset(move, 0, sizeof(*move));
 	move->common.version = cpu_to_be32(1);
-	move->common.opcode = cpu_to_be32(IBMVFC_MOVE_LOGIN);
+	if (tgt->protocol == IBMVFC_PROTO_SCSI)
+		move->common.opcode = cpu_to_be32(IBMVFC_MOVE_LOGIN);
+	else
+		move->common.opcode = cpu_to_be32(IBMVFC_NVMF_MOVE_LOGIN);
 	move->common.length = cpu_to_be16(sizeof(*move));
 
 	move->old_scsi_id = cpu_to_be64(tgt->scsi_id);
@@ -4551,7 +4561,8 @@ static void ibmvfc_tgt_move_login(struct ibmvfc_target *tgt)
 		ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
 		kref_put(&tgt->kref, ibmvfc_release_tgt);
 	} else
-		tgt_dbg(tgt, "Sent Move Login for new scsi_id: %llX\n", tgt->new_scsi_id);
+		tgt_dbg(tgt, "Sent %s Move Login for new scsi_id: %llX\n",
+			proto_type[tgt->protocol], tgt->new_scsi_id);
 }
 
 /**
-- 
2.54.0