From 9aaa0846dcc36c6b42c9035c109ce372f2849d33 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Mon, 4 Jan 2021 03:59:00 +0000
Subject: [PATCH] scst: Add support for the READ and WRITE DYN RUNTIME ATTR
 commands

Signed-off-by: Rob Turk <robtu@rtist.nl>
[ bvanassche: moved get_cdb_info_dyn_runtime_attr() definition ]


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9324 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 scst/src/scst_lib.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/scst/src/scst_lib.c b/scst/src/scst_lib.c
index f919cdcf9..a620230e0 100644
--- a/scst/src/scst_lib.c
+++ b/scst/src/scst_lib.c
@@ -495,6 +495,8 @@ static int get_cdb_info_mo(struct scst_cmd *cmd,
 	const struct scst_sdbops *sdbops);
 static int get_cdb_info_var_len(struct scst_cmd *cmd,
 	const struct scst_sdbops *sdbops);
+static int get_cdb_info_dyn_runtime_attr(struct scst_cmd *cmd,
+	const struct scst_sdbops *sdbops);
 
 /*
  * +=====================================-============-======-
@@ -1668,6 +1670,18 @@ static const struct scst_sdbops scst_scsi_op_table[] = {
 	 .info_op_flags = FLAG_NONE,
 	 .info_len_off = 6, .info_len_len = 4,
 	 .get_cdb_info = get_cdb_info_len_4},
+	{.ops = 0xD1, .devkey = " O              ",
+	 .info_op_name = "READ DYN RUNTIME ATTR",
+	 .info_data_direction = SCST_DATA_READ,
+	 .info_op_flags = FLAG_NONE,
+	 .info_len_off = 6, .info_len_len = 4,
+	 .get_cdb_info = get_cdb_info_dyn_runtime_attr},
+	{.ops = 0xD2, .devkey = " O              ",
+	 .info_op_name = "WRITE DYN RUNTIME ATTR",
+	 .info_data_direction = SCST_DATA_WRITE,
+	 .info_op_flags = FLAG_NONE,
+	 .info_len_off = 6, .info_len_len = 4,
+	 .get_cdb_info = get_cdb_info_dyn_runtime_attr},
 	{.ops = 0xE7, .devkey = "        V       ",
 	 .info_op_name = "INIT ELEMENT STATUS WRANGE",
 	 .info_data_direction = SCST_DATA_NONE,
@@ -11784,6 +11798,16 @@ static int get_cdb_info_write_same32(struct scst_cmd *cmd,
 	return get_cdb_info_write_same(cmd, sdbops, cmd->cdb[10] & 1 /*NDOB*/);
 }
 
+static int get_cdb_info_dyn_runtime_attr(struct scst_cmd *cmd,
+	const struct scst_sdbops *sdbops)
+{
+	/*
+	 * Read/write dyn runtime attr commands are non-standard, CDB len is 12
+	 */
+	cmd->cdb_len = 12;
+	return get_cdb_info_len_4(cmd, sdbops);
+}
+
 /**
  * scst_set_cmd_from_cdb_info() - Parse the SCSI CDB.
  * @cmd: SCSI command to parse.