summaryrefslogtreecommitdiffstats
path: root/include/scsi/scsi_bsg_iscsi.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /include/scsi/scsi_bsg_iscsi.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/scsi/scsi_bsg_iscsi.h')
-rw-r--r--include/scsi/scsi_bsg_iscsi.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/include/scsi/scsi_bsg_iscsi.h b/include/scsi/scsi_bsg_iscsi.h
new file mode 100644
index 000000000..9b1f0f424
--- /dev/null
+++ b/include/scsi/scsi_bsg_iscsi.h
@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * iSCSI Transport BSG Interface
+ *
+ * Copyright (C) 2009 James Smart, Emulex Corporation
+ */
+
+#ifndef SCSI_BSG_ISCSI_H
+#define SCSI_BSG_ISCSI_H
+
+/*
+ * This file intended to be included by both kernel and user space
+ */
+
+#include <scsi/scsi.h>
+
+/*
+ * iSCSI Transport SGIO v4 BSG Message Support
+ */
+
+/* Default BSG request timeout (in seconds) */
+#define ISCSI_DEFAULT_BSG_TIMEOUT (10 * HZ)
+
+
+/*
+ * Request Message Codes supported by the iSCSI Transport
+ */
+
+/* define the class masks for the message codes */
+#define ISCSI_BSG_CLS_MASK 0xF0000000 /* find object class */
+#define ISCSI_BSG_HST_MASK 0x80000000 /* iscsi host class */
+
+/* iscsi host Message Codes */
+#define ISCSI_BSG_HST_VENDOR (ISCSI_BSG_HST_MASK | 0x000000FF)
+
+
+/*
+ * iSCSI Host Messages
+ */
+
+/* ISCSI_BSG_HST_VENDOR : */
+
+/* Request:
+ * Note: When specifying vendor_id, be sure to read the Vendor Type and ID
+ * formatting requirements specified in scsi_netlink.h
+ */
+struct iscsi_bsg_host_vendor {
+ /*
+ * Identifies the vendor that the message is formatted for. This
+ * should be the recipient of the message.
+ */
+ uint64_t vendor_id;
+
+ /* start of vendor command area */
+ uint32_t vendor_cmd[];
+};
+
+/* Response:
+ */
+struct iscsi_bsg_host_vendor_reply {
+ /* start of vendor response area */
+ uint32_t vendor_rsp[0];
+};
+
+
+/* request (CDB) structure of the sg_io_v4 */
+struct iscsi_bsg_request {
+ uint32_t msgcode;
+ union {
+ struct iscsi_bsg_host_vendor h_vendor;
+ } rqst_data;
+} __attribute__((packed));
+
+
+/* response (request sense data) structure of the sg_io_v4 */
+struct iscsi_bsg_reply {
+ /*
+ * The completion result. Result exists in two forms:
+ * if negative, it is an -Exxx system errno value. There will
+ * be no further reply information supplied.
+ * else, it's the 4-byte scsi error result, with driver, host,
+ * msg and status fields. The per-msgcode reply structure
+ * will contain valid data.
+ */
+ uint32_t result;
+
+ /* If there was reply_payload, how much was received ? */
+ uint32_t reply_payload_rcv_len;
+
+ union {
+ struct iscsi_bsg_host_vendor_reply vendor_reply;
+ } reply_data;
+};
+
+
+#endif /* SCSI_BSG_ISCSI_H */