Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

9 files changed, 2509 insertions, 0 deletions

diff --git a/include/uapi/scsi/cxlflash_ioctl.h b/include/uapi/scsi/cxlflash_ioctl.h
new file mode 100644
index 000000000..513da47aa
--- /dev/null
+++ b/include/uapi/scsi/cxlflash_ioctl.h
@@ -0,0 +1,276 @@
+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+/*
+ * CXL Flash Device Driver
+ *
+ * Written by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>, IBM Corporation
+ *             Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation
+ *
+ * Copyright (C) 2015 IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _CXLFLASH_IOCTL_H
+#define _CXLFLASH_IOCTL_H
+
+#include <linux/types.h>
+
+/*
+ * Structure and definitions for all CXL Flash ioctls
+ */
+#define CXLFLASH_WWID_LEN		16
+
+/*
+ * Structure and flag definitions CXL Flash superpipe ioctls
+ */
+
+#define DK_CXLFLASH_VERSION_0	0
+
+struct dk_cxlflash_hdr {
+	__u16 version;			/* Version data */
+	__u16 rsvd[3];			/* Reserved for future use */
+	__u64 flags;			/* Input flags */
+	__u64 return_flags;		/* Returned flags */
+};
+
+/*
+ * Return flag definitions available to all superpipe ioctls
+ *
+ * Similar to the input flags, these are grown from the bottom-up with the
+ * intention that ioctl-specific return flag definitions would grow from the
+ * top-down, allowing the two sets to co-exist. While not required/enforced
+ * at this time, this provides future flexibility.
+ */
+#define DK_CXLFLASH_ALL_PORTS_ACTIVE	0x0000000000000001ULL
+#define DK_CXLFLASH_APP_CLOSE_ADAP_FD	0x0000000000000002ULL
+#define DK_CXLFLASH_CONTEXT_SQ_CMD_MODE	0x0000000000000004ULL
+
+/*
+ * General Notes:
+ * -------------
+ * The 'context_id' field of all ioctl structures contains the context
+ * identifier for a context in the lower 32-bits (upper 32-bits are not
+ * to be used when identifying a context to the AFU). That said, the value
+ * in its entirety (all 64-bits) is to be treated as an opaque cookie and
+ * should be presented as such when issuing ioctls.
+ */
+
+/*
+ * DK_CXLFLASH_ATTACH Notes:
+ * ------------------------
+ * Read/write access permissions are specified via the O_RDONLY, O_WRONLY,
+ * and O_RDWR flags defined in the fcntl.h header file.
+ *
+ * A valid adapter file descriptor (fd >= 0) is only returned on the initial
+ * attach (successful) of a context. When a context is shared(reused), the user
+ * is expected to already 'know' the adapter file descriptor associated with the
+ * context.
+ */
+#define DK_CXLFLASH_ATTACH_REUSE_CONTEXT	0x8000000000000000ULL
+
+struct dk_cxlflash_attach {
+	struct dk_cxlflash_hdr hdr;	/* Common fields */
+	__u64 num_interrupts;		/* Requested number of interrupts */
+	__u64 context_id;		/* Returned context */
+	__u64 mmio_size;		/* Returned size of MMIO area */
+	__u64 block_size;		/* Returned block size, in bytes */
+	__u64 adap_fd;			/* Returned adapter file descriptor */
+	__u64 last_lba;			/* Returned last LBA on the device */
+	__u64 max_xfer;			/* Returned max transfer size, blocks */
+	__u64 reserved[8];		/* Reserved for future use */
+};
+
+struct dk_cxlflash_detach {
+	struct dk_cxlflash_hdr hdr;	/* Common fields */
+	__u64 context_id;		/* Context to detach */
+	__u64 reserved[8];		/* Reserved for future use */
+};
+
+struct dk_cxlflash_udirect {
+	struct dk_cxlflash_hdr hdr;	/* Common fields */
+	__u64 context_id;		/* Context to own physical resources */
+	__u64 rsrc_handle;		/* Returned resource handle */
+	__u64 last_lba;			/* Returned last LBA on the device */
+	__u64 reserved[8];		/* Reserved for future use */
+};
+
+#define DK_CXLFLASH_UVIRTUAL_NEED_WRITE_SAME	0x8000000000000000ULL
+
+struct dk_cxlflash_uvirtual {
+	struct dk_cxlflash_hdr hdr;	/* Common fields */
+	__u64 context_id;		/* Context to own virtual resources */
+	__u64 lun_size;			/* Requested size, in 4K blocks */
+	__u64 rsrc_handle;		/* Returned resource handle */
+	__u64 last_lba;			/* Returned last LBA of LUN */
+	__u64 reserved[8];		/* Reserved for future use */
+};
+
+struct dk_cxlflash_release {
+	struct dk_cxlflash_hdr hdr;	/* Common fields */
+	__u64 context_id;		/* Context owning resources */
+	__u64 rsrc_handle;		/* Resource handle to release */
+	__u64 reserved[8];		/* Reserved for future use */
+};
+
+struct dk_cxlflash_resize {
+	struct dk_cxlflash_hdr hdr;	/* Common fields */
+	__u64 context_id;		/* Context owning resources */
+	__u64 rsrc_handle;		/* Resource handle of LUN to resize */
+	__u64 req_size;			/* New requested size, in 4K blocks */
+	__u64 last_lba;			/* Returned last LBA of LUN */
+	__u64 reserved[8];		/* Reserved for future use */
+};
+
+struct dk_cxlflash_clone {
+	struct dk_cxlflash_hdr hdr;	/* Common fields */
+	__u64 context_id_src;		/* Context to clone from */
+	__u64 context_id_dst;		/* Context to clone to */
+	__u64 adap_fd_src;		/* Source context adapter fd */
+	__u64 reserved[8];		/* Reserved for future use */
+};
+
+#define DK_CXLFLASH_VERIFY_SENSE_LEN	18
+#define DK_CXLFLASH_VERIFY_HINT_SENSE	0x8000000000000000ULL
+
+struct dk_cxlflash_verify {
+	struct dk_cxlflash_hdr hdr;	/* Common fields */
+	__u64 context_id;		/* Context owning resources to verify */
+	__u64 rsrc_handle;		/* Resource handle of LUN */
+	__u64 hint;			/* Reasons for verify */
+	__u64 last_lba;			/* Returned last LBA of device */
+	__u8 sense_data[DK_CXLFLASH_VERIFY_SENSE_LEN]; /* SCSI sense data */
+	__u8 pad[6];			/* Pad to next 8-byte boundary */
+	__u64 reserved[8];		/* Reserved for future use */
+};
+
+#define DK_CXLFLASH_RECOVER_AFU_CONTEXT_RESET	0x8000000000000000ULL
+
+struct dk_cxlflash_recover_afu {
+	struct dk_cxlflash_hdr hdr;	/* Common fields */
+	__u64 reason;			/* Reason for recovery request */
+	__u64 context_id;		/* Context to recover / updated ID */
+	__u64 mmio_size;		/* Returned size of MMIO area */
+	__u64 adap_fd;			/* Returned adapter file descriptor */
+	__u64 reserved[8];		/* Reserved for future use */
+};
+
+#define DK_CXLFLASH_MANAGE_LUN_WWID_LEN			CXLFLASH_WWID_LEN
+#define DK_CXLFLASH_MANAGE_LUN_ENABLE_SUPERPIPE		0x8000000000000000ULL
+#define DK_CXLFLASH_MANAGE_LUN_DISABLE_SUPERPIPE	0x4000000000000000ULL
+#define DK_CXLFLASH_MANAGE_LUN_ALL_PORTS_ACCESSIBLE	0x2000000000000000ULL
+
+struct dk_cxlflash_manage_lun {
+	struct dk_cxlflash_hdr hdr;			/* Common fields */
+	__u8 wwid[DK_CXLFLASH_MANAGE_LUN_WWID_LEN];	/* Page83 WWID, NAA-6 */
+	__u64 reserved[8];				/* Rsvd, future use */
+};
+
+union cxlflash_ioctls {
+	struct dk_cxlflash_attach attach;
+	struct dk_cxlflash_detach detach;
+	struct dk_cxlflash_udirect udirect;
+	struct dk_cxlflash_uvirtual uvirtual;
+	struct dk_cxlflash_release release;
+	struct dk_cxlflash_resize resize;
+	struct dk_cxlflash_clone clone;
+	struct dk_cxlflash_verify verify;
+	struct dk_cxlflash_recover_afu recover_afu;
+	struct dk_cxlflash_manage_lun manage_lun;
+};
+
+#define MAX_CXLFLASH_IOCTL_SZ	(sizeof(union cxlflash_ioctls))
+
+#define CXL_MAGIC 0xCA
+#define CXL_IOWR(_n, _s)	_IOWR(CXL_MAGIC, _n, struct _s)
+
+/*
+ * CXL Flash superpipe ioctls start at base of the reserved CXL_MAGIC
+ * region (0x80) and grow upwards.
+ */
+#define DK_CXLFLASH_ATTACH		CXL_IOWR(0x80, dk_cxlflash_attach)
+#define DK_CXLFLASH_USER_DIRECT		CXL_IOWR(0x81, dk_cxlflash_udirect)
+#define DK_CXLFLASH_RELEASE		CXL_IOWR(0x82, dk_cxlflash_release)
+#define DK_CXLFLASH_DETACH		CXL_IOWR(0x83, dk_cxlflash_detach)
+#define DK_CXLFLASH_VERIFY		CXL_IOWR(0x84, dk_cxlflash_verify)
+#define DK_CXLFLASH_RECOVER_AFU		CXL_IOWR(0x85, dk_cxlflash_recover_afu)
+#define DK_CXLFLASH_MANAGE_LUN		CXL_IOWR(0x86, dk_cxlflash_manage_lun)
+#define DK_CXLFLASH_USER_VIRTUAL	CXL_IOWR(0x87, dk_cxlflash_uvirtual)
+#define DK_CXLFLASH_VLUN_RESIZE		CXL_IOWR(0x88, dk_cxlflash_resize)
+#define DK_CXLFLASH_VLUN_CLONE		CXL_IOWR(0x89, dk_cxlflash_clone)
+
+/*
+ * Structure and flag definitions CXL Flash host ioctls
+ */
+
+#define HT_CXLFLASH_VERSION_0  0
+
+struct ht_cxlflash_hdr {
+	__u16 version;		/* Version data */
+	__u16 subcmd;		/* Sub-command */
+	__u16 rsvd[2];		/* Reserved for future use */
+	__u64 flags;		/* Input flags */
+	__u64 return_flags;	/* Returned flags */
+};
+
+/*
+ * Input flag definitions available to all host ioctls
+ *
+ * These are grown from the bottom-up with the intention that ioctl-specific
+ * input flag definitions would grow from the top-down, allowing the two sets
+ * to co-exist. While not required/enforced at this time, this provides future
+ * flexibility.
+ */
+#define HT_CXLFLASH_HOST_READ				0x0000000000000000ULL
+#define HT_CXLFLASH_HOST_WRITE				0x0000000000000001ULL
+
+#define HT_CXLFLASH_LUN_PROVISION_SUBCMD_CREATE_LUN	0x0001
+#define HT_CXLFLASH_LUN_PROVISION_SUBCMD_DELETE_LUN	0x0002
+#define HT_CXLFLASH_LUN_PROVISION_SUBCMD_QUERY_PORT	0x0003
+
+struct ht_cxlflash_lun_provision {
+	struct ht_cxlflash_hdr hdr; /* Common fields */
+	__u16 port;		    /* Target port for provision request */
+	__u16 reserved16[3];	    /* Reserved for future use */
+	__u64 size;		    /* Size of LUN (4K blocks) */
+	__u64 lun_id;		    /* SCSI LUN ID */
+	__u8 wwid[CXLFLASH_WWID_LEN];/* Page83 WWID, NAA-6 */
+	__u64 max_num_luns;	    /* Maximum number of LUNs provisioned */
+	__u64 cur_num_luns;	    /* Current number of LUNs provisioned */
+	__u64 max_cap_port;	    /* Total capacity for port (4K blocks) */
+	__u64 cur_cap_port;	    /* Current capacity for port (4K blocks) */
+	__u64 reserved[8];	    /* Reserved for future use */
+};
+
+#define	HT_CXLFLASH_AFU_DEBUG_MAX_DATA_LEN		262144	/* 256K */
+#define HT_CXLFLASH_AFU_DEBUG_SUBCMD_LEN		12
+struct ht_cxlflash_afu_debug {
+	struct ht_cxlflash_hdr hdr; /* Common fields */
+	__u8 reserved8[4];	    /* Reserved for future use */
+	__u8 afu_subcmd[HT_CXLFLASH_AFU_DEBUG_SUBCMD_LEN]; /* AFU subcommand,
+							    * (pass through)
+							    */
+	__u64 data_ea;		    /* Data buffer effective address */
+	__u32 data_len;		    /* Data buffer length */
+	__u32 reserved32;	    /* Reserved for future use */
+	__u64 reserved[8];	    /* Reserved for future use */
+};
+
+union cxlflash_ht_ioctls {
+	struct ht_cxlflash_lun_provision lun_provision;
+	struct ht_cxlflash_afu_debug afu_debug;
+};
+
+#define MAX_HT_CXLFLASH_IOCTL_SZ	(sizeof(union cxlflash_ht_ioctls))
+
+/*
+ * CXL Flash host ioctls start at the top of the reserved CXL_MAGIC
+ * region (0xBF) and grow downwards.
+ */
+#define HT_CXLFLASH_LUN_PROVISION CXL_IOWR(0xBF, ht_cxlflash_lun_provision)
+#define HT_CXLFLASH_AFU_DEBUG	  CXL_IOWR(0xBE, ht_cxlflash_afu_debug)
+
+
+#endif /* ifndef _CXLFLASH_IOCTL_H */
diff --git a/include/uapi/scsi/fc/fc_els.h b/include/uapi/scsi/fc/fc_els.h
new file mode 100644
index 000000000..8c704e510
--- /dev/null
+++ b/include/uapi/scsi/fc/fc_els.h
@@ -0,0 +1,1035 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright(c) 2007 Intel Corporation. All rights reserved.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#ifndef _FC_ELS_H_
+#define	_FC_ELS_H_
+
+#include <linux/types.h>
+#include <asm/byteorder.h>
+
+/*
+ * Fibre Channel Switch - Enhanced Link Services definitions.
+ * From T11 FC-LS Rev 1.2 June 7, 2005.
+ */
+
+/*
+ * ELS Command codes - byte 0 of the frame payload
+ */
+enum fc_els_cmd {
+	ELS_LS_RJT =	0x01,	/* ESL reject */
+	ELS_LS_ACC =	0x02,	/* ESL Accept */
+	ELS_PLOGI =	0x03,	/* N_Port login */
+	ELS_FLOGI =	0x04,	/* F_Port login */
+	ELS_LOGO =	0x05,	/* Logout */
+	ELS_ABTX =	0x06,	/* Abort exchange - obsolete */
+	ELS_RCS =	0x07,	/* read connection status */
+	ELS_RES =	0x08,	/* read exchange status block */
+	ELS_RSS =	0x09,	/* read sequence status block */
+	ELS_RSI =	0x0a,	/* read sequence initiative */
+	ELS_ESTS =	0x0b,	/* establish streaming */
+	ELS_ESTC =	0x0c,	/* estimate credit */
+	ELS_ADVC =	0x0d,	/* advise credit */
+	ELS_RTV =	0x0e,	/* read timeout value */
+	ELS_RLS =	0x0f,	/* read link error status block */
+	ELS_ECHO =	0x10,	/* echo */
+	ELS_TEST =	0x11,	/* test */
+	ELS_RRQ =	0x12,	/* reinstate recovery qualifier */
+	ELS_REC =	0x13,	/* read exchange concise */
+	ELS_SRR =	0x14,	/* sequence retransmission request */
+	ELS_FPIN =	0x16,	/* Fabric Performance Impact Notification */
+	ELS_RDP =	0x18,	/* Read Diagnostic Parameters */
+	ELS_RDF =	0x19,	/* Register Diagnostic Functions */
+	ELS_PRLI =	0x20,	/* process login */
+	ELS_PRLO =	0x21,	/* process logout */
+	ELS_SCN =	0x22,	/* state change notification */
+	ELS_TPLS =	0x23,	/* test process login state */
+	ELS_TPRLO =	0x24,	/* third party process logout */
+	ELS_LCLM =	0x25,	/* login control list mgmt (obs) */
+	ELS_GAID =	0x30,	/* get alias_ID */
+	ELS_FACT =	0x31,	/* fabric activate alias_id */
+	ELS_FDACDT =	0x32,	/* fabric deactivate alias_id */
+	ELS_NACT =	0x33,	/* N-port activate alias_id */
+	ELS_NDACT =	0x34,	/* N-port deactivate alias_id */
+	ELS_QOSR =	0x40,	/* quality of service request */
+	ELS_RVCS =	0x41,	/* read virtual circuit status */
+	ELS_PDISC =	0x50,	/* discover N_port service params */
+	ELS_FDISC =	0x51,	/* discover F_port service params */
+	ELS_ADISC =	0x52,	/* discover address */
+	ELS_RNC =	0x53,	/* report node cap (obs) */
+	ELS_FARP_REQ =	0x54,	/* FC ARP request */
+	ELS_FARP_REPL =	0x55,	/* FC ARP reply */
+	ELS_RPS =	0x56,	/* read port status block */
+	ELS_RPL =	0x57,	/* read port list */
+	ELS_RPBC =	0x58,	/* read port buffer condition */
+	ELS_FAN =	0x60,	/* fabric address notification */
+	ELS_RSCN =	0x61,	/* registered state change notification */
+	ELS_SCR =	0x62,	/* state change registration */
+	ELS_RNFT =	0x63,	/* report node FC-4 types */
+	ELS_CSR =	0x68,	/* clock synch. request */
+	ELS_CSU =	0x69,	/* clock synch. update */
+	ELS_LINIT =	0x70,	/* loop initialize */
+	ELS_LSTS =	0x72,	/* loop status */
+	ELS_RNID =	0x78,	/* request node ID data */
+	ELS_RLIR =	0x79,	/* registered link incident report */
+	ELS_LIRR =	0x7a,	/* link incident record registration */
+	ELS_SRL =	0x7b,	/* scan remote loop */
+	ELS_SBRP =	0x7c,	/* set bit-error reporting params */
+	ELS_RPSC =	0x7d,	/* report speed capabilities */
+	ELS_QSA =	0x7e,	/* query security attributes */
+	ELS_EVFP =	0x7f,	/* exchange virt. fabrics params */
+	ELS_LKA =	0x80,	/* link keep-alive */
+	ELS_AUTH_ELS =	0x90,	/* authentication ELS */
+};
+
+/*
+ * Initializer useful for decoding table.
+ * Please keep this in sync with the above definitions.
+ */
+#define	FC_ELS_CMDS_INIT {			\
+	[ELS_LS_RJT] =	"LS_RJT",		\
+	[ELS_LS_ACC] =	"LS_ACC",		\
+	[ELS_PLOGI] =	"PLOGI",		\
+	[ELS_FLOGI] =	"FLOGI",		\
+	[ELS_LOGO] =	"LOGO",			\
+	[ELS_ABTX] =	"ABTX",			\
+	[ELS_RCS] =	"RCS",			\
+	[ELS_RES] =	"RES",			\
+	[ELS_RSS] =	"RSS",			\
+	[ELS_RSI] =	"RSI",			\
+	[ELS_ESTS] =	"ESTS",			\
+	[ELS_ESTC] =	"ESTC",			\
+	[ELS_ADVC] =	"ADVC",			\
+	[ELS_RTV] =	"RTV",			\
+	[ELS_RLS] =	"RLS",			\
+	[ELS_ECHO] =	"ECHO",			\
+	[ELS_TEST] =	"TEST",			\
+	[ELS_RRQ] =	"RRQ",			\
+	[ELS_REC] =	"REC",			\
+	[ELS_SRR] =	"SRR",			\
+	[ELS_FPIN] =	"FPIN",			\
+	[ELS_RDP] =	"RDP",			\
+	[ELS_RDF] =	"RDF",			\
+	[ELS_PRLI] =	"PRLI",			\
+	[ELS_PRLO] =	"PRLO",			\
+	[ELS_SCN] =	"SCN",			\
+	[ELS_TPLS] =	"TPLS",			\
+	[ELS_TPRLO] =	"TPRLO",		\
+	[ELS_LCLM] =	"LCLM",			\
+	[ELS_GAID] =	"GAID",			\
+	[ELS_FACT] =	"FACT",			\
+	[ELS_FDACDT] =	"FDACDT",		\
+	[ELS_NACT] =	"NACT",			\
+	[ELS_NDACT] =	"NDACT",		\
+	[ELS_QOSR] =	"QOSR",			\
+	[ELS_RVCS] =	"RVCS",			\
+	[ELS_PDISC] =	"PDISC",		\
+	[ELS_FDISC] =	"FDISC",		\
+	[ELS_ADISC] =	"ADISC",		\
+	[ELS_RNC] =	"RNC",			\
+	[ELS_FARP_REQ] = "FARP_REQ",		\
+	[ELS_FARP_REPL] =  "FARP_REPL",		\
+	[ELS_RPS] =	"RPS",			\
+	[ELS_RPL] =	"RPL",			\
+	[ELS_RPBC] =	"RPBC",			\
+	[ELS_FAN] =	"FAN",			\
+	[ELS_RSCN] =	"RSCN",			\
+	[ELS_SCR] =	"SCR",			\
+	[ELS_RNFT] =	"RNFT",			\
+	[ELS_CSR] =	"CSR",			\
+	[ELS_CSU] =	"CSU",			\
+	[ELS_LINIT] =	"LINIT",		\
+	[ELS_LSTS] =	"LSTS",			\
+	[ELS_RNID] =	"RNID",			\
+	[ELS_RLIR] =	"RLIR",			\
+	[ELS_LIRR] =	"LIRR",			\
+	[ELS_SRL] =	"SRL",			\
+	[ELS_SBRP] =	"SBRP",			\
+	[ELS_RPSC] =	"RPSC",			\
+	[ELS_QSA] =	"QSA",			\
+	[ELS_EVFP] =	"EVFP",			\
+	[ELS_LKA] =	"LKA",			\
+	[ELS_AUTH_ELS] = "AUTH_ELS",		\
+}
+
+/*
+ * LS_ACC payload.
+ */
+struct fc_els_ls_acc {
+	__u8          la_cmd;		/* command code ELS_LS_ACC */
+	__u8          la_resv[3];	/* reserved */
+};
+
+/*
+ * ELS reject payload.
+ */
+struct fc_els_ls_rjt {
+	__u8	er_cmd;		/* command code ELS_LS_RJT */
+	__u8	er_resv[4];	/* reserved must be zero */
+	__u8	er_reason;	/* reason (enum fc_els_rjt_reason below) */
+	__u8	er_explan;	/* explanation (enum fc_els_rjt_explan below) */
+	__u8	er_vendor;	/* vendor specific code */
+};
+
+/*
+ * ELS reject reason codes (er_reason).
+ */
+enum fc_els_rjt_reason {
+	ELS_RJT_NONE =		0,	/* no reject - not to be sent */
+	ELS_RJT_INVAL =		0x01,	/* invalid ELS command code */
+	ELS_RJT_LOGIC =		0x03,	/* logical error */
+	ELS_RJT_BUSY =		0x05,	/* logical busy */
+	ELS_RJT_PROT =		0x07,	/* protocol error */
+	ELS_RJT_UNAB =		0x09,	/* unable to perform command request */
+	ELS_RJT_UNSUP =		0x0b,	/* command not supported */
+	ELS_RJT_INPROG =	0x0e,	/* command already in progress */
+	ELS_RJT_FIP =		0x20,	/* FIP error */
+	ELS_RJT_VENDOR =	0xff,	/* vendor specific error */
+};
+
+
+/*
+ * reason code explanation (er_explan).
+ */
+enum fc_els_rjt_explan {
+	ELS_EXPL_NONE =		0x00,	/* No additional explanation */
+	ELS_EXPL_SPP_OPT_ERR =	0x01,	/* service parameter error - options */
+	ELS_EXPL_SPP_ICTL_ERR =	0x03,	/* service parm error - initiator ctl */
+	ELS_EXPL_AH =		0x11,	/* invalid association header */
+	ELS_EXPL_AH_REQ =	0x13,	/* association_header required */
+	ELS_EXPL_SID =		0x15,	/* invalid originator S_ID */
+	ELS_EXPL_OXID_RXID =	0x17,	/* invalid OX_ID-RX_ID combination */
+	ELS_EXPL_INPROG =	0x19,	/* Request already in progress */
+	ELS_EXPL_PLOGI_REQD =	0x1e,	/* N_Port login required */
+	ELS_EXPL_INSUF_RES =	0x29,	/* insufficient resources */
+	ELS_EXPL_UNAB_DATA =	0x2a,	/* unable to supply requested data */
+	ELS_EXPL_UNSUPR =	0x2c,	/* Request not supported */
+	ELS_EXPL_INV_LEN =	0x2d,	/* Invalid payload length */
+	ELS_EXPL_NOT_NEIGHBOR = 0x62,	/* VN2VN_Port not in neighbor set */
+	/* TBD - above definitions incomplete */
+};
+
+/*
+ * Link Service TLV Descriptor Tag Values
+ */
+enum fc_ls_tlv_dtag {
+	ELS_DTAG_LS_REQ_INFO =		0x00000001,
+		/* Link Service Request Information Descriptor */
+	ELS_DTAG_LNK_INTEGRITY =	0x00020001,
+		/* Link Integrity Notification Descriptor */
+	ELS_DTAG_DELIVERY =		0x00020002,
+		/* Delivery Notification Descriptor */
+	ELS_DTAG_PEER_CONGEST =		0x00020003,
+		/* Peer Congestion Notification Descriptor */
+	ELS_DTAG_CONGESTION =		0x00020004,
+		/* Congestion Notification Descriptor */
+	ELS_DTAG_FPIN_REGISTER =	0x00030001,
+		/* FPIN Registration Descriptor */
+};
+
+/*
+ * Initializer useful for decoding table.
+ * Please keep this in sync with the above definitions.
+ */
+#define FC_LS_TLV_DTAG_INIT {					      \
+	{ ELS_DTAG_LS_REQ_INFO,		"Link Service Request Information" }, \
+	{ ELS_DTAG_LNK_INTEGRITY,	"Link Integrity Notification" },      \
+	{ ELS_DTAG_DELIVERY,		"Delivery Notification Present" },    \
+	{ ELS_DTAG_PEER_CONGEST,	"Peer Congestion Notification" },     \
+	{ ELS_DTAG_CONGESTION,		"Congestion Notification" },	      \
+	{ ELS_DTAG_FPIN_REGISTER,	"FPIN Registration" },		      \
+}
+
+
+/*
+ * Generic Link Service TLV Descriptor format
+ *
+ * This structure, as it defines no payload, will also be referred to
+ * as the "tlv header" - which contains the tag and len fields.
+ */
+struct fc_tlv_desc {
+	__be32		desc_tag;	/* Notification Descriptor Tag */
+	__be32		desc_len;	/* Length of Descriptor (in bytes).
+					 * Size of descriptor excluding
+					 * desc_tag and desc_len fields.
+					 */
+	__u8		desc_value[0];  /* Descriptor Value */
+};
+
+/* Descriptor tag and len fields are considered the mandatory header
+ * for a descriptor
+ */
+#define FC_TLV_DESC_HDR_SZ	sizeof(struct fc_tlv_desc)
+
+/*
+ * Macro, used when initializing payloads, to return the descriptor length.
+ * Length is size of descriptor minus the tag and len fields.
+ */
+#define FC_TLV_DESC_LENGTH_FROM_SZ(desc)	\
+		(sizeof(desc) - FC_TLV_DESC_HDR_SZ)
+
+/* Macro, used on received payloads, to return the descriptor length */
+#define FC_TLV_DESC_SZ_FROM_LENGTH(tlv)		\
+		(__be32_to_cpu((tlv)->desc_len) + FC_TLV_DESC_HDR_SZ)
+
+/*
+ * This helper is used to walk descriptors in a descriptor list.
+ * Given the address of the current descriptor, which minimally contains a
+ * tag and len field, calculate the address of the next descriptor based
+ * on the len field.
+ */
+static inline void *fc_tlv_next_desc(void *desc)
+{
+	struct fc_tlv_desc *tlv = desc;
+
+	return (desc + FC_TLV_DESC_SZ_FROM_LENGTH(tlv));
+}
+
+
+/*
+ * Link Service Request Information Descriptor
+ */
+struct fc_els_lsri_desc {
+	__be32		desc_tag;	/* descriptor tag (0x0000 0001) */
+	__be32		desc_len;	/* Length of Descriptor (in bytes) (4).
+					 * Size of descriptor excluding
+					 * desc_tag and desc_len fields.
+					 */
+	struct {
+		__u8	cmd;		/* ELS cmd byte */
+		__u8	bytes[3];	/* bytes 1..3 */
+	} rqst_w0;			/* Request word 0 */
+};
+
+
+/*
+ * Common service parameters (N ports).
+ */
+struct fc_els_csp {
+	__u8		sp_hi_ver;	/* highest version supported (obs.) */
+	__u8		sp_lo_ver;	/* highest version supported (obs.) */
+	__be16		sp_bb_cred;	/* buffer-to-buffer credits */
+	__be16		sp_features;	/* common feature flags */
+	__be16		sp_bb_data;	/* b-b state number and data field sz */
+	union {
+		struct {
+			__be16	_sp_tot_seq; /* total concurrent sequences */
+			__be16	_sp_rel_off; /* rel. offset by info cat */
+		} sp_plogi;
+		struct {
+			__be32	_sp_r_a_tov; /* resource alloc. timeout msec */
+		} sp_flogi_acc;
+	} sp_u;
+	__be32		sp_e_d_tov;	/* error detect timeout value */
+};
+#define	sp_tot_seq	sp_u.sp_plogi._sp_tot_seq
+#define	sp_rel_off	sp_u.sp_plogi._sp_rel_off
+#define	sp_r_a_tov	sp_u.sp_flogi_acc._sp_r_a_tov
+
+#define	FC_SP_BB_DATA_MASK 0xfff /* mask for data field size in sp_bb_data */
+
+/*
+ * Minimum and maximum values for max data field size in service parameters.
+ */
+#define	FC_SP_MIN_MAX_PAYLOAD	FC_MIN_MAX_PAYLOAD
+#define	FC_SP_MAX_MAX_PAYLOAD	FC_MAX_PAYLOAD
+
+/*
+ * sp_features
+ */
+#define	FC_SP_FT_NPIV	0x8000	/* multiple N_Port_ID support (FLOGI) */
+#define	FC_SP_FT_CIRO	0x8000	/* continuously increasing rel off (PLOGI) */
+#define	FC_SP_FT_CLAD	0x8000	/* clean address (in FLOGI LS_ACC) */
+#define	FC_SP_FT_RAND	0x4000	/* random relative offset */
+#define	FC_SP_FT_VAL	0x2000	/* valid vendor version level */
+#define	FC_SP_FT_NPIV_ACC	0x2000	/* NPIV assignment (FLOGI LS_ACC) */
+#define	FC_SP_FT_FPORT	0x1000	/* F port (1) vs. N port (0) */
+#define	FC_SP_FT_ABB	0x0800	/* alternate BB_credit management */
+#define	FC_SP_FT_EDTR	0x0400	/* E_D_TOV Resolution is nanoseconds */
+#define	FC_SP_FT_MCAST	0x0200	/* multicast */
+#define	FC_SP_FT_BCAST	0x0100	/* broadcast */
+#define	FC_SP_FT_HUNT	0x0080	/* hunt group */
+#define	FC_SP_FT_SIMP	0x0040	/* dedicated simplex */
+#define	FC_SP_FT_SEC	0x0020	/* reserved for security */
+#define	FC_SP_FT_CSYN	0x0010	/* clock synch. supported */
+#define	FC_SP_FT_RTTOV	0x0008	/* R_T_TOV value 100 uS, else 100 mS */
+#define	FC_SP_FT_HALF	0x0004	/* dynamic half duplex */
+#define	FC_SP_FT_SEQC	0x0002	/* SEQ_CNT */
+#define	FC_SP_FT_PAYL	0x0001	/* FLOGI payload length 256, else 116 */
+
+/*
+ * Class-specific service parameters.
+ */
+struct fc_els_cssp {
+	__be16		cp_class;	/* class flags */
+	__be16		cp_init;	/* initiator flags */
+	__be16		cp_recip;	/* recipient flags */
+	__be16		cp_rdfs;	/* receive data field size */
+	__be16		cp_con_seq;	/* concurrent sequences */
+	__be16		cp_ee_cred;	/* N-port end-to-end credit */
+	__u8		cp_resv1;	/* reserved */
+	__u8		cp_open_seq;	/* open sequences per exchange */
+	__u8		_cp_resv2[2];	/* reserved */
+};
+
+/*
+ * cp_class flags.
+ */
+#define	FC_CPC_VALID	0x8000		/* class valid */
+#define	FC_CPC_IMIX	0x4000		/* intermix mode */
+#define	FC_CPC_SEQ	0x0800		/* sequential delivery */
+#define	FC_CPC_CAMP	0x0200		/* camp-on */
+#define	FC_CPC_PRI	0x0080		/* priority */
+
+/*
+ * cp_init flags.
+ * (TBD: not all flags defined here).
+ */
+#define	FC_CPI_CSYN	0x0010		/* clock synch. capable */
+
+/*
+ * cp_recip flags.
+ */
+#define	FC_CPR_CSYN	0x0008		/* clock synch. capable */
+
+/*
+ * NFC_ELS_FLOGI: Fabric login request.
+ * NFC_ELS_PLOGI: Port login request (same format).
+ */
+struct fc_els_flogi {
+	__u8		fl_cmd;		/* command */
+	__u8		_fl_resvd[3];	/* must be zero */
+	struct fc_els_csp fl_csp;	/* common service parameters */
+	__be64		fl_wwpn;	/* port name */
+	__be64		fl_wwnn;	/* node name */
+	struct fc_els_cssp fl_cssp[4];	/* class 1-4 service parameters */
+	__u8		fl_vend[16];	/* vendor version level */
+} __attribute__((__packed__));
+
+/*
+ * Process login service parameter page.
+ */
+struct fc_els_spp {
+	__u8		spp_type;	/* type code or common service params */
+	__u8		spp_type_ext;	/* type code extension */
+	__u8		spp_flags;
+	__u8		_spp_resvd;
+	__be32		spp_orig_pa;	/* originator process associator */
+	__be32		spp_resp_pa;	/* responder process associator */
+	__be32		spp_params;	/* service parameters */
+};
+
+/*
+ * spp_flags.
+ */
+#define	FC_SPP_OPA_VAL	    0x80	/* originator proc. assoc. valid */
+#define	FC_SPP_RPA_VAL	    0x40	/* responder proc. assoc. valid */
+#define	FC_SPP_EST_IMG_PAIR 0x20	/* establish image pair */
+#define	FC_SPP_RESP_MASK    0x0f	/* mask for response code (below) */
+
+/*
+ * SPP response code in spp_flags - lower 4 bits.
+ */
+enum fc_els_spp_resp {
+	FC_SPP_RESP_ACK	=	1,	/* request executed */
+	FC_SPP_RESP_RES =	2,	/* unable due to lack of resources */
+	FC_SPP_RESP_INIT =	3,	/* initialization not complete */
+	FC_SPP_RESP_NO_PA = 	4,	/* unknown process associator */
+	FC_SPP_RESP_CONF = 	5,	/* configuration precludes image pair */
+	FC_SPP_RESP_COND = 	6,	/* request completed conditionally */
+	FC_SPP_RESP_MULT = 	7,	/* unable to handle multiple SPPs */
+	FC_SPP_RESP_INVL = 	8,	/* SPP is invalid */
+};
+
+/*
+ * ELS_RRQ - Reinstate Recovery Qualifier
+ */
+struct fc_els_rrq {
+	__u8		rrq_cmd;	/* command (0x12) */
+	__u8		rrq_zero[3];	/* specified as zero - part of cmd */
+	__u8		rrq_resvd;	/* reserved */
+	__u8		rrq_s_id[3];	/* originator FID */
+	__be16		rrq_ox_id;	/* originator exchange ID */
+	__be16		rrq_rx_id;	/* responders exchange ID */
+};
+
+/*
+ * ELS_REC - Read exchange concise.
+ */
+struct fc_els_rec {
+	__u8		rec_cmd;	/* command (0x13) */
+	__u8		rec_zero[3];	/* specified as zero - part of cmd */
+	__u8		rec_resvd;	/* reserved */
+	__u8		rec_s_id[3];	/* originator FID */
+	__be16		rec_ox_id;	/* originator exchange ID */
+	__be16		rec_rx_id;	/* responders exchange ID */
+};
+
+/*
+ * ELS_REC LS_ACC payload.
+ */
+struct fc_els_rec_acc {
+	__u8		reca_cmd;	/* accept (0x02) */
+	__u8		reca_zero[3];	/* specified as zero - part of cmd */
+	__be16		reca_ox_id;	/* originator exchange ID */
+	__be16		reca_rx_id;	/* responders exchange ID */
+	__u8		reca_resvd1;	/* reserved */
+	__u8		reca_ofid[3];	/* originator FID */
+	__u8		reca_resvd2;	/* reserved */
+	__u8		reca_rfid[3];	/* responder FID */
+	__be32		reca_fc4value;	/* FC4 value */
+	__be32		reca_e_stat;	/* ESB (exchange status block) status */
+};
+
+/*
+ * ELS_PRLI - Process login request and response.
+ */
+struct fc_els_prli {
+	__u8		prli_cmd;	/* command */
+	__u8		prli_spp_len;	/* length of each serv. parm. page */
+	__be16		prli_len;	/* length of entire payload */
+	/* service parameter pages follow */
+};
+
+/*
+ * ELS_PRLO - Process logout request and response.
+ */
+struct fc_els_prlo {
+	__u8            prlo_cmd;       /* command */
+	__u8            prlo_obs;       /* obsolete, but shall be set to 10h */
+	__be16          prlo_len;       /* payload length */
+};
+
+/*
+ * ELS_ADISC payload
+ */
+struct fc_els_adisc {
+	__u8		adisc_cmd;
+	__u8		adisc_resv[3];
+	__u8            adisc_resv1;
+	__u8            adisc_hard_addr[3];
+	__be64          adisc_wwpn;
+	__be64          adisc_wwnn;
+	__u8            adisc_resv2;
+	__u8            adisc_port_id[3];
+} __attribute__((__packed__));
+
+/*
+ * ELS_LOGO - process or fabric logout.
+ */
+struct fc_els_logo {
+	__u8		fl_cmd;		/* command code */
+	__u8		fl_zero[3];	/* specified as zero - part of cmd */
+	__u8		fl_resvd;	/* reserved */
+	__u8		fl_n_port_id[3];/* N port ID */
+	__be64		fl_n_port_wwn;	/* port name */
+};
+
+/*
+ * ELS_RTV - read timeout value.
+ */
+struct fc_els_rtv {
+	__u8		rtv_cmd;	/* command code 0x0e */
+	__u8		rtv_zero[3];	/* specified as zero - part of cmd */
+};
+
+/*
+ * LS_ACC for ELS_RTV - read timeout value.
+ */
+struct fc_els_rtv_acc {
+	__u8		rtv_cmd;	/* command code 0x02 */
+	__u8		rtv_zero[3];	/* specified as zero - part of cmd */
+	__be32		rtv_r_a_tov;	/* resource allocation timeout value */
+	__be32		rtv_e_d_tov;	/* error detection timeout value */
+	__be32		rtv_toq;	/* timeout qualifier (see below) */
+};
+
+/*
+ * rtv_toq bits.
+ */
+#define	FC_ELS_RTV_EDRES (1 << 26)	/* E_D_TOV resolution is nS else mS */
+#define	FC_ELS_RTV_RTTOV (1 << 19)	/* R_T_TOV is 100 uS else 100 mS */
+
+/*
+ * ELS_SCR - state change registration payload.
+ */
+struct fc_els_scr {
+	__u8		scr_cmd;	/* command code */
+	__u8		scr_resv[6];	/* reserved */
+	__u8		scr_reg_func;	/* registration function (see below) */
+};
+
+enum fc_els_scr_func {
+	ELS_SCRF_FAB =	1,	/* fabric-detected registration */
+	ELS_SCRF_NPORT = 2,	/* Nx_Port-detected registration */
+	ELS_SCRF_FULL =	3,	/* full registration */
+	ELS_SCRF_CLEAR = 255,	/* remove any current registrations */
+};
+
+/*
+ * ELS_RSCN - registered state change notification payload.
+ */
+struct fc_els_rscn {
+	__u8		rscn_cmd;	/* RSCN opcode (0x61) */
+	__u8		rscn_page_len;	/* page length (4) */
+	__be16		rscn_plen;	/* payload length including this word */
+
+	/* followed by 4-byte generic affected Port_ID pages */
+};
+
+struct fc_els_rscn_page {
+	__u8		rscn_page_flags; /* event and address format */
+	__u8		rscn_fid[3];	/* fabric ID */
+};
+
+#define	ELS_RSCN_EV_QUAL_BIT	2	/* shift count for event qualifier */
+#define	ELS_RSCN_EV_QUAL_MASK	0xf	/* mask for event qualifier */
+#define	ELS_RSCN_ADDR_FMT_BIT	0	/* shift count for address format */
+#define	ELS_RSCN_ADDR_FMT_MASK	0x3	/* mask for address format */
+
+enum fc_els_rscn_ev_qual {
+	ELS_EV_QUAL_NONE = 0,		/* unspecified */
+	ELS_EV_QUAL_NS_OBJ = 1,		/* changed name server object */
+	ELS_EV_QUAL_PORT_ATTR = 2,	/* changed port attribute */
+	ELS_EV_QUAL_SERV_OBJ = 3,	/* changed service object */
+	ELS_EV_QUAL_SW_CONFIG = 4,	/* changed switch configuration */
+	ELS_EV_QUAL_REM_OBJ = 5,	/* removed object */
+};
+
+enum fc_els_rscn_addr_fmt {
+	ELS_ADDR_FMT_PORT = 0,	/* rscn_fid is a port address */
+	ELS_ADDR_FMT_AREA = 1,	/* rscn_fid is a area address */
+	ELS_ADDR_FMT_DOM = 2,	/* rscn_fid is a domain address */
+	ELS_ADDR_FMT_FAB = 3,	/* anything on fabric may have changed */
+};
+
+/*
+ * ELS_RNID - request Node ID.
+ */
+struct fc_els_rnid {
+	__u8		rnid_cmd;	/* RNID opcode (0x78) */
+	__u8		rnid_resv[3];	/* reserved */
+	__u8		rnid_fmt;	/* data format */
+	__u8		rnid_resv2[3];	/* reserved */
+};
+
+/*
+ * Node Identification Data formats (rnid_fmt)
+ */
+enum fc_els_rnid_fmt {
+	ELS_RNIDF_NONE = 0,		/* no specific identification data */
+	ELS_RNIDF_GEN = 0xdf,		/* general topology discovery format */
+};
+
+/*
+ * ELS_RNID response.
+ */
+struct fc_els_rnid_resp {
+	__u8		rnid_cmd;	/* response code (LS_ACC) */
+	__u8		rnid_resv[3];	/* reserved */
+	__u8		rnid_fmt;	/* data format */
+	__u8		rnid_cid_len;	/* common ID data length */
+	__u8		rnid_resv2;	/* reserved */
+	__u8		rnid_sid_len;	/* specific ID data length */
+};
+
+struct fc_els_rnid_cid {
+	__be64		rnid_wwpn;	/* N port name */
+	__be64		rnid_wwnn;	/* node name */
+};
+
+struct fc_els_rnid_gen {
+	__u8		rnid_vend_id[16]; /* vendor-unique ID */
+	__be32		rnid_atype;	/* associated type (see below) */
+	__be32		rnid_phys_port;	/* physical port number */
+	__be32		rnid_att_nodes;	/* number of attached nodes */
+	__u8		rnid_node_mgmt;	/* node management (see below) */
+	__u8		rnid_ip_ver;	/* IP version (see below) */
+	__be16		rnid_prot_port;	/* UDP / TCP port number */
+	__be32		rnid_ip_addr[4]; /* IP address */
+	__u8		rnid_resvd[2];	/* reserved */
+	__be16		rnid_vend_spec;	/* vendor-specific field */
+};
+
+enum fc_els_rnid_atype {
+	ELS_RNIDA_UNK =		0x01,	/* unknown */
+	ELS_RNIDA_OTHER =	0x02,	/* none of the following */
+	ELS_RNIDA_HUB =		0x03,
+	ELS_RNIDA_SWITCH =	0x04,
+	ELS_RNIDA_GATEWAY =	0x05,
+	ELS_RNIDA_CONV =	0x06,   /* Obsolete, do not use this value */
+	ELS_RNIDA_HBA =	        0x07,   /* Obsolete, do not use this value */
+	ELS_RNIDA_PROXY =       0x08,   /* Obsolete, do not use this value */
+	ELS_RNIDA_STORAGE =	0x09,
+	ELS_RNIDA_HOST =	0x0a,
+	ELS_RNIDA_SUBSYS =	0x0b,	/* storage subsystem (e.g., RAID) */
+	ELS_RNIDA_ACCESS =	0x0e,	/* access device (e.g. media changer) */
+	ELS_RNIDA_NAS =		0x11,	/* NAS server */
+	ELS_RNIDA_BRIDGE =	0x12,	/* bridge */
+	ELS_RNIDA_VIRT =	0x13,	/* virtualization device */
+	ELS_RNIDA_MF =		0xff,	/* multifunction device (bits below) */
+	ELS_RNIDA_MF_HUB =	1UL << 31, 	/* hub */
+	ELS_RNIDA_MF_SW =	1UL << 30, 	/* switch */
+	ELS_RNIDA_MF_GW =	1UL << 29,	/* gateway */
+	ELS_RNIDA_MF_ST =	1UL << 28,	/* storage */
+	ELS_RNIDA_MF_HOST =	1UL << 27,	/* host */
+	ELS_RNIDA_MF_SUB =	1UL << 26,	/* storage subsystem */
+	ELS_RNIDA_MF_ACC =	1UL << 25,	/* storage access dev */
+	ELS_RNIDA_MF_WDM =	1UL << 24,	/* wavelength division mux */
+	ELS_RNIDA_MF_NAS =	1UL << 23,	/* NAS server */
+	ELS_RNIDA_MF_BR =	1UL << 22,	/* bridge */
+	ELS_RNIDA_MF_VIRT =	1UL << 21,	/* virtualization device */
+};
+
+enum fc_els_rnid_mgmt {
+	ELS_RNIDM_SNMP =	0,
+	ELS_RNIDM_TELNET =	1,
+	ELS_RNIDM_HTTP =	2,
+	ELS_RNIDM_HTTPS =	3,
+	ELS_RNIDM_XML =		4,	/* HTTP + XML */
+};
+
+enum fc_els_rnid_ipver {
+	ELS_RNIDIP_NONE =	0,	/* no IP support or node mgmt. */
+	ELS_RNIDIP_V4 =		1,	/* IPv4 */
+	ELS_RNIDIP_V6 =		2,	/* IPv6 */
+};
+
+/*
+ * ELS RPL - Read Port List.
+ */
+struct fc_els_rpl {
+	__u8		rpl_cmd;	/* command */
+	__u8		rpl_resv[5];	/* reserved - must be zero */
+	__be16		rpl_max_size;	/* maximum response size or zero */
+	__u8		rpl_resv1;	/* reserved - must be zero */
+	__u8		rpl_index[3];	/* starting index */
+};
+
+/*
+ * Port number block in RPL response.
+ */
+struct fc_els_pnb {
+	__be32		pnb_phys_pn;	/* physical port number */
+	__u8		pnb_resv;	/* reserved */
+	__u8		pnb_port_id[3];	/* port ID */
+	__be64		pnb_wwpn;	/* port name */
+};
+
+/*
+ * RPL LS_ACC response.
+ */
+struct fc_els_rpl_resp {
+	__u8		rpl_cmd;	/* ELS_LS_ACC */
+	__u8		rpl_resv1;	/* reserved - must be zero */
+	__be16		rpl_plen;	/* payload length */
+	__u8		rpl_resv2;	/* reserved - must be zero */
+	__u8		rpl_llen[3];	/* list length */
+	__u8		rpl_resv3;	/* reserved - must be zero */
+	__u8		rpl_index[3];	/* starting index */
+	struct fc_els_pnb rpl_pnb[1];	/* variable number of PNBs */
+};
+
+/*
+ * Link Error Status Block.
+ */
+struct fc_els_lesb {
+	__be32		lesb_link_fail;	/* link failure count */
+	__be32		lesb_sync_loss;	/* loss of synchronization count */
+	__be32		lesb_sig_loss;	/* loss of signal count */
+	__be32		lesb_prim_err;	/* primitive sequence error count */
+	__be32		lesb_inv_word;	/* invalid transmission word count */
+	__be32		lesb_inv_crc;	/* invalid CRC count */
+};
+
+/*
+ * ELS RPS - Read Port Status Block request.
+ */
+struct fc_els_rps {
+	__u8		rps_cmd;	/* command */
+	__u8		rps_resv[2];	/* reserved - must be zero */
+	__u8		rps_flag;	/* flag - see below */
+	__be64		rps_port_spec;	/* port selection */
+};
+
+enum fc_els_rps_flag {
+	FC_ELS_RPS_DID =	0x00,	/* port identified by D_ID of req. */
+	FC_ELS_RPS_PPN =	0x01,	/* port_spec is physical port number */
+	FC_ELS_RPS_WWPN =	0x02,	/* port_spec is port WWN */
+};
+
+/*
+ * ELS RPS LS_ACC response.
+ */
+struct fc_els_rps_resp {
+	__u8		rps_cmd;	/* command - LS_ACC */
+	__u8		rps_resv[2];	/* reserved - must be zero */
+	__u8		rps_flag;	/* flag - see below */
+	__u8		rps_resv2[2];	/* reserved */
+	__be16		rps_status;	/* port status - see below */
+	struct fc_els_lesb rps_lesb;	/* link error status block */
+};
+
+enum fc_els_rps_resp_flag {
+	FC_ELS_RPS_LPEV =	0x01,	/* L_port extension valid */
+};
+
+enum fc_els_rps_resp_status {
+	FC_ELS_RPS_PTP =	1 << 5,	/* point-to-point connection */
+	FC_ELS_RPS_LOOP =	1 << 4,	/* loop mode */
+	FC_ELS_RPS_FAB =	1 << 3,	/* fabric present */
+	FC_ELS_RPS_NO_SIG =	1 << 2,	/* loss of signal */
+	FC_ELS_RPS_NO_SYNC =	1 << 1,	/* loss of synchronization */
+	FC_ELS_RPS_RESET =	1 << 0,	/* in link reset protocol */
+};
+
+/*
+ * ELS LIRR - Link Incident Record Registration request.
+ */
+struct fc_els_lirr {
+	__u8		lirr_cmd;	/* command */
+	__u8		lirr_resv[3];	/* reserved - must be zero */
+	__u8		lirr_func;	/* registration function */
+	__u8		lirr_fmt;	/* FC-4 type of RLIR requested */
+	__u8		lirr_resv2[2];	/* reserved - must be zero */
+};
+
+enum fc_els_lirr_func {
+	ELS_LIRR_SET_COND = 	0x01,	/* set - conditionally receive */
+	ELS_LIRR_SET_UNCOND = 	0x02,	/* set - unconditionally receive */
+	ELS_LIRR_CLEAR = 	0xff	/* clear registration */
+};
+
+/*
+ * ELS SRL - Scan Remote Loop request.
+ */
+struct fc_els_srl {
+	__u8		srl_cmd;	/* command */
+	__u8		srl_resv[3];	/* reserved - must be zero */
+	__u8		srl_flag;	/* flag - see below */
+	__u8		srl_flag_param[3];	/* flag parameter */
+};
+
+enum fc_els_srl_flag {
+	FC_ELS_SRL_ALL =	0x00,	/* scan all FL ports */
+	FC_ELS_SRL_ONE =	0x01,	/* scan specified loop */
+	FC_ELS_SRL_EN_PER =	0x02,	/* enable periodic scanning (param) */
+	FC_ELS_SRL_DIS_PER =	0x03,	/* disable periodic scanning */
+};
+
+/*
+ * ELS RLS - Read Link Error Status Block request.
+ */
+struct fc_els_rls {
+	__u8		rls_cmd;	/* command */
+	__u8		rls_resv[4];	/* reserved - must be zero */
+	__u8		rls_port_id[3];	/* port ID */
+};
+
+/*
+ * ELS RLS LS_ACC Response.
+ */
+struct fc_els_rls_resp {
+	__u8		rls_cmd;	/* ELS_LS_ACC */
+	__u8		rls_resv[3];	/* reserved - must be zero */
+	struct fc_els_lesb rls_lesb;	/* link error status block */
+};
+
+/*
+ * ELS RLIR - Registered Link Incident Report.
+ * This is followed by the CLIR and the CLID, described below.
+ */
+struct fc_els_rlir {
+	__u8		rlir_cmd;	/* command */
+	__u8		rlir_resv[3];	/* reserved - must be zero */
+	__u8		rlir_fmt;	/* format (FC4-type if type specific) */
+	__u8		rlir_clr_len;	/* common link incident record length */
+	__u8		rlir_cld_len;	/* common link incident desc. length */
+	__u8		rlir_slr_len;	/* spec. link incident record length */
+};
+
+/*
+ * CLIR - Common Link Incident Record Data. - Sent via RLIR.
+ */
+struct fc_els_clir {
+	__be64		clir_wwpn;	/* incident port name */
+	__be64		clir_wwnn;	/* incident port node name */
+	__u8		clir_port_type;	/* incident port type */
+	__u8		clir_port_id[3];	/* incident port ID */
+
+	__be64		clir_conn_wwpn;	/* connected port name */
+	__be64		clir_conn_wwnn;	/* connected node name */
+	__be64		clir_fab_name;	/* fabric name */
+	__be32		clir_phys_port;	/* physical port number */
+	__be32		clir_trans_id;	/* transaction ID */
+	__u8		clir_resv[3];	/* reserved */
+	__u8		clir_ts_fmt;	/* time stamp format */
+	__be64		clir_timestamp;	/* time stamp */
+};
+
+/*
+ * CLIR clir_ts_fmt - time stamp format values.
+ */
+enum fc_els_clir_ts_fmt {
+	ELS_CLIR_TS_UNKNOWN = 	0,	/* time stamp field unknown */
+	ELS_CLIR_TS_SEC_FRAC = 	1,	/* time in seconds and fractions */
+	ELS_CLIR_TS_CSU =	2,	/* time in clock synch update format */
+};
+
+/*
+ * Common Link Incident Descriptor - sent via RLIR.
+ */
+struct fc_els_clid {
+	__u8		clid_iq;	/* incident qualifier flags */
+	__u8		clid_ic;	/* incident code */
+	__be16		clid_epai;	/* domain/area of ISL */
+};
+
+/*
+ * CLID incident qualifier flags.
+ */
+enum fc_els_clid_iq {
+	ELS_CLID_SWITCH =	0x20,	/* incident port is a switch node */
+	ELS_CLID_E_PORT =	0x10,	/* incident is an ISL (E) port */
+	ELS_CLID_SEV_MASK =	0x0c,	/* severity 2-bit field mask */
+	ELS_CLID_SEV_INFO =	0x00,	/* report is informational */
+	ELS_CLID_SEV_INOP =	0x08,	/* link not operational */
+	ELS_CLID_SEV_DEG =	0x04,	/* link degraded but operational */
+	ELS_CLID_LASER =	0x02,	/* subassembly is a laser */
+	ELS_CLID_FRU =		0x01,	/* format can identify a FRU */
+};
+
+/*
+ * CLID incident code.
+ */
+enum fc_els_clid_ic {
+	ELS_CLID_IC_IMPL =	1,	/* implicit incident */
+	ELS_CLID_IC_BER =	2,	/* bit-error-rate threshold exceeded */
+	ELS_CLID_IC_LOS =	3,	/* loss of synch or signal */
+	ELS_CLID_IC_NOS =	4,	/* non-operational primitive sequence */
+	ELS_CLID_IC_PST =	5,	/* primitive sequence timeout */
+	ELS_CLID_IC_INVAL =	6,	/* invalid primitive sequence */
+	ELS_CLID_IC_LOOP_TO =	7,	/* loop initialization time out */
+	ELS_CLID_IC_LIP =	8,	/* receiving LIP */
+};
+
+
+enum fc_fpin_li_event_types {
+	FPIN_LI_UNKNOWN =		0x0,
+	FPIN_LI_LINK_FAILURE =		0x1,
+	FPIN_LI_LOSS_OF_SYNC =		0x2,
+	FPIN_LI_LOSS_OF_SIG =		0x3,
+	FPIN_LI_PRIM_SEQ_ERR =		0x4,
+	FPIN_LI_INVALID_TX_WD =		0x5,
+	FPIN_LI_INVALID_CRC =		0x6,
+	FPIN_LI_DEVICE_SPEC =		0xF,
+};
+
+/*
+ * Initializer useful for decoding table.
+ * Please keep this in sync with the above definitions.
+ */
+#define FC_FPIN_LI_EVT_TYPES_INIT {					\
+	{ FPIN_LI_UNKNOWN,		"Unknown" },			\
+	{ FPIN_LI_LINK_FAILURE,		"Link Failure" },		\
+	{ FPIN_LI_LOSS_OF_SYNC,		"Loss of Synchronization" },	\
+	{ FPIN_LI_LOSS_OF_SIG,		"Loss of Signal" },		\
+	{ FPIN_LI_PRIM_SEQ_ERR,		"Primitive Sequence Protocol Error" }, \
+	{ FPIN_LI_INVALID_TX_WD,	"Invalid Transmission Word" },	\
+	{ FPIN_LI_INVALID_CRC,		"Invalid CRC" },		\
+	{ FPIN_LI_DEVICE_SPEC,		"Device Specific" },		\
+}
+
+
+/*
+ * Link Integrity Notification Descriptor
+ */
+struct fc_fn_li_desc {
+	__be32		desc_tag;	/* Descriptor Tag (0x00020001) */
+	__be32		desc_len;	/* Length of Descriptor (in bytes).
+					 * Size of descriptor excluding
+					 * desc_tag and desc_len fields.
+					 */
+	__be64		detecting_wwpn;	/* Port Name that detected event */
+	__be64		attached_wwpn;	/* Port Name of device attached to
+					 * detecting Port Name
+					 */
+	__be16		event_type;	/* see enum fc_fpin_li_event_types */
+	__be16		event_modifier;	/* Implementation specific value
+					 * describing the event type
+					 */
+	__be32		event_threshold;/* duration in ms of the link
+					 * integrity detection cycle
+					 */
+	__be32		event_count;	/* minimum number of event
+					 * occurrences during the event
+					 * threshold to caause the LI event
+					 */
+	__be32		pname_count;	/* number of portname_list elements */
+	__be64		pname_list[0];	/* list of N_Port_Names accessible
+					 * through the attached port
+					 */
+};
+
+/*
+ * ELS_FPIN - Fabric Performance Impact Notification
+ */
+struct fc_els_fpin {
+	__u8		fpin_cmd;	/* command (0x16) */
+	__u8		fpin_zero[3];	/* specified as zero - part of cmd */
+	__be32		desc_len;	/* Length of Descriptor List (in bytes).
+					 * Size of ELS excluding fpin_cmd,
+					 * fpin_zero and desc_len fields.
+					 */
+	struct fc_tlv_desc	fpin_desc[0];	/* Descriptor list */
+};
+
+/* Diagnostic Function Descriptor - FPIN Registration */
+struct fc_df_desc_fpin_reg {
+	__be32		desc_tag;	/* FPIN Registration (0x00030001) */
+	__be32		desc_len;	/* Length of Descriptor (in bytes).
+					 * Size of descriptor excluding
+					 * desc_tag and desc_len fields.
+					 */
+	__be32		count;		/* Number of desc_tags elements */
+	__be32		desc_tags[0];	/* Array of Descriptor Tags.
+					 * Each tag indicates a function
+					 * supported by the N_Port (request)
+					 * or by the  N_Port and Fabric
+					 * Controller (reply; may be a subset
+					 * of the request).
+					 * See ELS_FN_DTAG_xxx for tag values.
+					 */
+};
+
+/*
+ * ELS_RDF - Register Diagnostic Functions
+ */
+struct fc_els_rdf {
+	__u8		fpin_cmd;	/* command (0x19) */
+	__u8		fpin_zero[3];	/* specified as zero - part of cmd */
+	__be32		desc_len;	/* Length of Descriptor List (in bytes).
+					 * Size of ELS excluding fpin_cmd,
+					 * fpin_zero and desc_len fields.
+					 */
+	struct fc_tlv_desc	desc[0];	/* Descriptor list */
+};
+
+/*
+ * ELS RDF LS_ACC Response.
+ */
+struct fc_els_rdf_resp {
+	struct fc_els_ls_acc	acc_hdr;
+	__be32			desc_list_len;	/* Length of response (in
+						 * bytes). Excludes acc_hdr
+						 * and desc_list_len fields.
+						 */
+	struct fc_els_lsri_desc	lsri;
+	struct fc_tlv_desc	desc[0];	/* Supported Descriptor list */
+};
+
+
+#endif /* _FC_ELS_H_ */
diff --git a/include/uapi/scsi/fc/fc_fs.h b/include/uapi/scsi/fc/fc_fs.h
new file mode 100644
index 000000000..0dab49dbb
--- /dev/null
+++ b/include/uapi/scsi/fc/fc_fs.h
@@ -0,0 +1,338 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright(c) 2007 Intel Corporation. All rights reserved.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#ifndef _FC_FS_H_
+#define _FC_FS_H_
+
+#include <linux/types.h>
+
+/*
+ * Fibre Channel Framing and Signalling definitions.
+ * From T11 FC-FS-2 Rev 0.90 - 9 August 2005.
+ */
+
+/*
+ * Frame header
+ */
+struct fc_frame_header {
+	__u8          fh_r_ctl;	/* routing control */
+	__u8          fh_d_id[3];	/* Destination ID */
+
+	__u8          fh_cs_ctl;	/* class of service control / pri */
+	__u8          fh_s_id[3];	/* Source ID */
+
+	__u8          fh_type;		/* see enum fc_fh_type below */
+	__u8          fh_f_ctl[3];	/* frame control */
+
+	__u8          fh_seq_id;	/* sequence ID */
+	__u8          fh_df_ctl;	/* data field control */
+	__be16        fh_seq_cnt;	/* sequence count */
+
+	__be16        fh_ox_id;		/* originator exchange ID */
+	__be16        fh_rx_id;		/* responder exchange ID */
+	__be32        fh_parm_offset;	/* parameter or relative offset */
+};
+
+#define FC_FRAME_HEADER_LEN 24	/* expected length of structure */
+
+#define FC_MAX_PAYLOAD  2112U		/* max payload length in bytes */
+#define FC_MIN_MAX_PAYLOAD  256U 	/* lower limit on max payload */
+
+#define FC_MAX_FRAME	(FC_MAX_PAYLOAD + FC_FRAME_HEADER_LEN)
+#define FC_MIN_MAX_FRAME (FC_MIN_MAX_PAYLOAD + FC_FRAME_HEADER_LEN)
+
+/*
+ * fh_r_ctl - Routing control definitions.
+ */
+    /*
+     * FC-4 device_data.
+     */
+enum fc_rctl {
+	FC_RCTL_DD_UNCAT = 0x00,	/* uncategorized information */
+	FC_RCTL_DD_SOL_DATA = 0x01,	/* solicited data */
+	FC_RCTL_DD_UNSOL_CTL = 0x02,	/* unsolicited control */
+	FC_RCTL_DD_SOL_CTL = 0x03,	/* solicited control or reply */
+	FC_RCTL_DD_UNSOL_DATA = 0x04,	/* unsolicited data */
+	FC_RCTL_DD_DATA_DESC = 0x05,	/* data descriptor */
+	FC_RCTL_DD_UNSOL_CMD = 0x06,	/* unsolicited command */
+	FC_RCTL_DD_CMD_STATUS = 0x07,	/* command status */
+
+#define FC_RCTL_ILS_REQ FC_RCTL_DD_UNSOL_CTL	/* ILS request */
+#define FC_RCTL_ILS_REP FC_RCTL_DD_SOL_CTL	/* ILS reply */
+
+	/*
+	 * Extended Link_Data
+	 */
+	FC_RCTL_ELS_REQ = 0x22,	/* extended link services request */
+	FC_RCTL_ELS_REP = 0x23,	/* extended link services reply */
+	FC_RCTL_ELS4_REQ = 0x32, /* FC-4 ELS request */
+	FC_RCTL_ELS4_REP = 0x33, /* FC-4 ELS reply */
+	/*
+	 * Optional Extended Headers
+	 */
+	FC_RCTL_VFTH = 0x50,	/* virtual fabric tagging header */
+	FC_RCTL_IFRH = 0x51,	/* inter-fabric routing header */
+	FC_RCTL_ENCH = 0x52,	/* encapsulation header */
+	/*
+	 * Basic Link Services fh_r_ctl values.
+	 */
+	FC_RCTL_BA_NOP = 0x80,	/* basic link service NOP */
+	FC_RCTL_BA_ABTS = 0x81,	/* basic link service abort */
+	FC_RCTL_BA_RMC = 0x82,	/* remove connection */
+	FC_RCTL_BA_ACC = 0x84,	/* basic accept */
+	FC_RCTL_BA_RJT = 0x85,	/* basic reject */
+	FC_RCTL_BA_PRMT = 0x86,	/* dedicated connection preempted */
+	/*
+	 * Link Control Information.
+	 */
+	FC_RCTL_ACK_1 = 0xc0,	/* acknowledge_1 */
+	FC_RCTL_ACK_0 = 0xc1,	/* acknowledge_0 */
+	FC_RCTL_P_RJT = 0xc2,	/* port reject */
+	FC_RCTL_F_RJT = 0xc3,	/* fabric reject */
+	FC_RCTL_P_BSY = 0xc4,	/* port busy */
+	FC_RCTL_F_BSY = 0xc5,	/* fabric busy to data frame */
+	FC_RCTL_F_BSYL = 0xc6,	/* fabric busy to link control frame */
+	FC_RCTL_LCR = 0xc7,	/* link credit reset */
+	FC_RCTL_END = 0xc9,	/* end */
+};
+				    /* incomplete list of definitions */
+
+/*
+ * R_CTL names initializer.
+ * Please keep this matching the above definitions.
+ */
+#define FC_RCTL_NAMES_INIT { \
+	[FC_RCTL_DD_UNCAT] =		"uncat",			\
+	[FC_RCTL_DD_SOL_DATA] =		"sol data",			\
+	[FC_RCTL_DD_UNSOL_CTL] =	"unsol ctl",			\
+	[FC_RCTL_DD_SOL_CTL] =		"sol ctl/reply",		\
+	[FC_RCTL_DD_UNSOL_DATA] =	"unsol data",			\
+	[FC_RCTL_DD_DATA_DESC] =	"data desc",			\
+	[FC_RCTL_DD_UNSOL_CMD] =	"unsol cmd",			\
+	[FC_RCTL_DD_CMD_STATUS] =	"cmd status",			\
+	[FC_RCTL_ELS_REQ] =		"ELS req",			\
+	[FC_RCTL_ELS_REP] =		"ELS rep",			\
+	[FC_RCTL_ELS4_REQ] =		"FC-4 ELS req",			\
+	[FC_RCTL_ELS4_REP] =		"FC-4 ELS rep",			\
+	[FC_RCTL_BA_NOP] =		"BLS NOP",			\
+	[FC_RCTL_BA_ABTS] =		"BLS abort",			\
+	[FC_RCTL_BA_RMC] =		"BLS remove connection",	\
+	[FC_RCTL_BA_ACC] =		"BLS accept",			\
+	[FC_RCTL_BA_RJT] =		"BLS reject",			\
+	[FC_RCTL_BA_PRMT] =		"BLS dedicated connection preempted", \
+	[FC_RCTL_ACK_1] =		"LC ACK_1",			\
+	[FC_RCTL_ACK_0] =		"LC ACK_0",			\
+	[FC_RCTL_P_RJT] =		"LC port reject",		\
+	[FC_RCTL_F_RJT] =		"LC fabric reject",		\
+	[FC_RCTL_P_BSY] =		"LC port busy",			\
+	[FC_RCTL_F_BSY] =		"LC fabric busy to data frame",	\
+	[FC_RCTL_F_BSYL] =		"LC fabric busy to link control frame",\
+	[FC_RCTL_LCR] =			"LC link credit reset",		\
+	[FC_RCTL_END] =			"LC end",			\
+}
+
+/*
+ * Well-known fabric addresses.
+ */
+enum fc_well_known_fid {
+	FC_FID_NONE =           0x000000,       /* No destination */
+	FC_FID_BCAST =		0xffffff,	/* broadcast */
+	FC_FID_FLOGI =		0xfffffe,	/* fabric login */
+	FC_FID_FCTRL =		0xfffffd,	/* fabric controller */
+	FC_FID_DIR_SERV =	0xfffffc,	/* directory server */
+	FC_FID_TIME_SERV =	0xfffffb,	/* time server */
+	FC_FID_MGMT_SERV =	0xfffffa,	/* management server */
+	FC_FID_QOS =		0xfffff9,	/* QoS Facilitator */
+	FC_FID_ALIASES =	0xfffff8,	/* alias server (FC-PH2) */
+	FC_FID_SEC_KEY =	0xfffff7,	/* Security key dist. server */
+	FC_FID_CLOCK =		0xfffff6,	/* clock synch server */
+	FC_FID_MCAST_SERV =	0xfffff5,	/* multicast server */
+};
+
+#define	FC_FID_WELL_KNOWN_MAX	0xffffff /* highest well-known fabric ID */
+#define	FC_FID_WELL_KNOWN_BASE	0xfffff5 /* start of well-known fabric ID */
+
+/*
+ * Other well-known addresses, outside the above contiguous range.
+ */
+#define	FC_FID_DOM_MGR		0xfffc00	/* domain manager base */
+
+/*
+ * Fabric ID bytes.
+ */
+#define	FC_FID_DOMAIN		0
+#define	FC_FID_PORT		1
+#define	FC_FID_LINK		2
+
+/*
+ * fh_type codes
+ */
+enum fc_fh_type {
+	FC_TYPE_BLS =	0x00,	/* basic link service */
+	FC_TYPE_ELS =	0x01,	/* extended link service */
+	FC_TYPE_IP =	0x05,	/* IP over FC, RFC 4338 */
+	FC_TYPE_FCP =	0x08,	/* SCSI FCP */
+	FC_TYPE_CT =	0x20,	/* Fibre Channel Services (FC-CT) */
+	FC_TYPE_ILS =	0x22,	/* internal link service */
+	FC_TYPE_NVME =	0x28,	/* FC-NVME */
+};
+
+/*
+ * FC_TYPE names initializer.
+ * Please keep this matching the above definitions.
+ */
+#define FC_TYPE_NAMES_INIT {				\
+	[FC_TYPE_BLS] =		"BLS",			\
+	[FC_TYPE_ELS] =		"ELS",			\
+	[FC_TYPE_IP] =		"IP",			\
+	[FC_TYPE_FCP] =		"FCP",			\
+	[FC_TYPE_CT] =		"CT",			\
+	[FC_TYPE_ILS] =		"ILS",			\
+	[FC_TYPE_NVME] =	"NVME",			\
+}
+
+/*
+ * Exchange IDs.
+ */
+#define FC_XID_UNKNOWN  0xffff	/* unknown exchange ID */
+#define FC_XID_MIN	0x0	/* supported min exchange ID */
+#define FC_XID_MAX	0xfffe	/* supported max exchange ID */
+
+/*
+ * fh_f_ctl - Frame control flags.
+ */
+#define	FC_FC_EX_CTX	(1 << 23)	/* sent by responder to exchange */
+#define	FC_FC_SEQ_CTX	(1 << 22)	/* sent by responder to sequence */
+#define	FC_FC_FIRST_SEQ (1 << 21)	/* first sequence of this exchange */
+#define	FC_FC_LAST_SEQ	(1 << 20)	/* last sequence of this exchange */
+#define	FC_FC_END_SEQ	(1 << 19)	/* last frame of sequence */
+#define	FC_FC_END_CONN	(1 << 18)	/* end of class 1 connection pending */
+#define	FC_FC_RES_B17	(1 << 17)	/* reserved */
+#define	FC_FC_SEQ_INIT	(1 << 16)	/* transfer of sequence initiative */
+#define	FC_FC_X_ID_REASS (1 << 15)	/* exchange ID has been changed */
+#define	FC_FC_X_ID_INVAL (1 << 14)	/* exchange ID invalidated */
+
+#define	FC_FC_ACK_1	(1 << 12)	/* 13:12 = 1: ACK_1 expected */
+#define	FC_FC_ACK_N	(2 << 12)	/* 13:12 = 2: ACK_N expected */
+#define	FC_FC_ACK_0	(3 << 12)	/* 13:12 = 3: ACK_0 expected */
+
+#define	FC_FC_RES_B11	(1 << 11)	/* reserved */
+#define	FC_FC_RES_B10	(1 << 10)	/* reserved */
+#define	FC_FC_RETX_SEQ	(1 << 9)	/* retransmitted sequence */
+#define	FC_FC_UNI_TX	(1 << 8)	/* unidirectional transmit (class 1) */
+#define	FC_FC_CONT_SEQ(i) ((i) << 6)
+#define	FC_FC_ABT_SEQ(i) ((i) << 4)
+#define	FC_FC_REL_OFF	(1 << 3)	/* parameter is relative offset */
+#define	FC_FC_RES2	(1 << 2)	/* reserved */
+#define	FC_FC_FILL(i)	((i) & 3)	/* 1:0: bytes of trailing fill */
+
+/*
+ * BA_ACC payload.
+ */
+struct fc_ba_acc {
+	__u8		ba_seq_id_val;	/* SEQ_ID validity */
+#define FC_BA_SEQ_ID_VAL 0x80
+	__u8		ba_seq_id;	/* SEQ_ID of seq last deliverable */
+	__u8		ba_resvd[2];	/* reserved */
+	__be16		ba_ox_id;	/* OX_ID for aborted seq or exch */
+	__be16		ba_rx_id;	/* RX_ID for aborted seq or exch */
+	__be16		ba_low_seq_cnt;	/* low SEQ_CNT of aborted seq */
+	__be16		ba_high_seq_cnt; /* high SEQ_CNT of aborted seq */
+};
+
+/*
+ * BA_RJT: Basic Reject payload.
+ */
+struct fc_ba_rjt {
+	__u8		br_resvd;	/* reserved */
+	__u8		br_reason;	/* reason code */
+	__u8		br_explan;	/* reason explanation */
+	__u8		br_vendor;	/* vendor unique code */
+};
+
+/*
+ * BA_RJT reason codes.
+ * From FS-2.
+ */
+enum fc_ba_rjt_reason {
+	FC_BA_RJT_NONE =	0,	/* in software this means no reject */
+	FC_BA_RJT_INVL_CMD =	0x01,	/* invalid command code */
+	FC_BA_RJT_LOG_ERR =	0x03,	/* logical error */
+	FC_BA_RJT_LOG_BUSY =	0x05,	/* logical busy */
+	FC_BA_RJT_PROTO_ERR =	0x07,	/* protocol error */
+	FC_BA_RJT_UNABLE =	0x09,	/* unable to perform request */
+	FC_BA_RJT_VENDOR =	0xff,	/* vendor-specific (see br_vendor) */
+};
+
+/*
+ * BA_RJT reason code explanations.
+ */
+enum fc_ba_rjt_explan {
+	FC_BA_RJT_EXP_NONE =	0x00,	/* no additional expanation */
+	FC_BA_RJT_INV_XID =	0x03,	/* invalid OX_ID-RX_ID combination */
+	FC_BA_RJT_ABT =		0x05,	/* sequence aborted, no seq info */
+};
+
+/*
+ * P_RJT or F_RJT: Port Reject or Fabric Reject parameter field.
+ */
+struct fc_pf_rjt {
+	__u8		rj_action;	/* reserved */
+	__u8		rj_reason;	/* reason code */
+	__u8		rj_resvd;	/* reserved */
+	__u8		rj_vendor;	/* vendor unique code */
+};
+
+/*
+ * P_RJT and F_RJT reject reason codes.
+ */
+enum fc_pf_rjt_reason {
+	FC_RJT_NONE =		0,	/* non-reject (reserved by standard) */
+	FC_RJT_INVL_DID =	0x01,	/* invalid destination ID */
+	FC_RJT_INVL_SID =	0x02,	/* invalid source ID */
+	FC_RJT_P_UNAV_T =	0x03,	/* port unavailable, temporary */
+	FC_RJT_P_UNAV =		0x04,	/* port unavailable, permanent */
+	FC_RJT_CLS_UNSUP =	0x05,	/* class not supported */
+	FC_RJT_DEL_USAGE =	0x06,	/* delimiter usage error */
+	FC_RJT_TYPE_UNSUP =	0x07,	/* type not supported */
+	FC_RJT_LINK_CTL =	0x08,	/* invalid link control */
+	FC_RJT_R_CTL =		0x09,	/* invalid R_CTL field */
+	FC_RJT_F_CTL =		0x0a,	/* invalid F_CTL field */
+	FC_RJT_OX_ID =		0x0b,	/* invalid originator exchange ID */
+	FC_RJT_RX_ID =		0x0c,	/* invalid responder exchange ID */
+	FC_RJT_SEQ_ID =		0x0d,	/* invalid sequence ID */
+	FC_RJT_DF_CTL =		0x0e,	/* invalid DF_CTL field */
+	FC_RJT_SEQ_CNT =	0x0f,	/* invalid SEQ_CNT field */
+	FC_RJT_PARAM =		0x10,	/* invalid parameter field */
+	FC_RJT_EXCH_ERR =	0x11,	/* exchange error */
+	FC_RJT_PROTO =		0x12,	/* protocol error */
+	FC_RJT_LEN =		0x13,	/* incorrect length */
+	FC_RJT_UNEXP_ACK =	0x14,	/* unexpected ACK */
+	FC_RJT_FAB_CLASS =	0x15,	/* class unsupported by fabric entity */
+	FC_RJT_LOGI_REQ =	0x16,	/* login required */
+	FC_RJT_SEQ_XS =		0x17,	/* excessive sequences attempted */
+	FC_RJT_EXCH_EST =	0x18,	/* unable to establish exchange */
+	FC_RJT_FAB_UNAV =	0x1a,	/* fabric unavailable */
+	FC_RJT_VC_ID =		0x1b,	/* invalid VC_ID (class 4) */
+	FC_RJT_CS_CTL =		0x1c,	/* invalid CS_CTL field */
+	FC_RJT_INSUF_RES =	0x1d,	/* insuff. resources for VC (Class 4) */
+	FC_RJT_INVL_CLS =	0x1f,	/* invalid class of service */
+	FC_RJT_PREEMT_RJT =	0x20,	/* preemption request rejected */
+	FC_RJT_PREEMT_DIS =	0x21,	/* preemption not enabled */
+	FC_RJT_MCAST_ERR =	0x22,	/* multicast error */
+	FC_RJT_MCAST_ET =	0x23,	/* multicast error terminate */
+	FC_RJT_PRLI_REQ =	0x24,	/* process login required */
+	FC_RJT_INVL_ATT =	0x25,	/* invalid attachment */
+	FC_RJT_VENDOR =		0xff,	/* vendor specific reject */
+};
+
+/* default timeout values */
+
+#define FC_DEF_E_D_TOV	2000UL
+#define FC_DEF_R_A_TOV	10000UL
+
+#endif /* _FC_FS_H_ */
diff --git a/include/uapi/scsi/fc/fc_gs.h b/include/uapi/scsi/fc/fc_gs.h
new file mode 100644
index 000000000..effb4c662
--- /dev/null
+++ b/include/uapi/scsi/fc/fc_gs.h
@@ -0,0 +1,84 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright(c) 2007 Intel Corporation. All rights reserved.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#ifndef _FC_GS_H_
+#define	_FC_GS_H_
+
+#include <linux/types.h>
+
+/*
+ * Fibre Channel Services - Common Transport.
+ * From T11.org FC-GS-2 Rev 5.3 November 1998.
+ */
+
+struct fc_ct_hdr {
+	__u8		ct_rev;		/* revision */
+	__u8		ct_in_id[3];	/* N_Port ID of original requestor */
+	__u8		ct_fs_type;	/* type of fibre channel service */
+	__u8		ct_fs_subtype;	/* subtype */
+	__u8		ct_options;
+	__u8		_ct_resvd1;
+	__be16		ct_cmd;		/* command / response code */
+	__be16		ct_mr_size;	/* maximum / residual size */
+	__u8		_ct_resvd2;
+	__u8		ct_reason;	/* reject reason */
+	__u8		ct_explan;	/* reason code explanation */
+	__u8		ct_vendor;	/* vendor unique data */
+};
+
+#define	FC_CT_HDR_LEN	16	/* expected sizeof (struct fc_ct_hdr) */
+
+enum fc_ct_rev {
+	FC_CT_REV = 1		/* common transport revision */
+};
+
+/*
+ * ct_fs_type values.
+ */
+enum fc_ct_fs_type {
+	FC_FST_ALIAS =	0xf8,	/* alias service */
+	FC_FST_MGMT =	0xfa,	/* management service */
+	FC_FST_TIME =	0xfb,	/* time service */
+	FC_FST_DIR =	0xfc,	/* directory service */
+};
+
+/*
+ * ct_cmd: Command / response codes
+ */
+enum fc_ct_cmd {
+	FC_FS_RJT =	0x8001,	/* reject */
+	FC_FS_ACC =	0x8002,	/* accept */
+};
+
+/*
+ * FS_RJT reason codes.
+ */
+enum fc_ct_reason {
+	FC_FS_RJT_CMD =		0x01,	/* invalid command code */
+	FC_FS_RJT_VER =		0x02,	/* invalid version level */
+	FC_FS_RJT_LOG =		0x03,	/* logical error */
+	FC_FS_RJT_IUSIZ =	0x04,	/* invalid IU size */
+	FC_FS_RJT_BSY =		0x05,	/* logical busy */
+	FC_FS_RJT_PROTO =	0x07,	/* protocol error */
+	FC_FS_RJT_UNABL =	0x09,	/* unable to perform command request */
+	FC_FS_RJT_UNSUP =	0x0b,	/* command not supported */
+};
+
+/*
+ * FS_RJT reason code explanations.
+ */
+enum fc_ct_explan {
+	FC_FS_EXP_NONE =	0x00,	/* no additional explanation */
+	FC_FS_EXP_PID =		0x01,	/* port ID not registered */
+	FC_FS_EXP_PNAM =	0x02,	/* port name not registered */
+	FC_FS_EXP_NNAM =	0x03,	/* node name not registered */
+	FC_FS_EXP_COS =		0x04,	/* class of service not registered */
+	FC_FS_EXP_FTNR =	0x07,	/* FC-4 types not registered */
+	/* definitions not complete */
+};
+
+#endif /* _FC_GS_H_ */
diff --git a/include/uapi/scsi/fc/fc_ns.h b/include/uapi/scsi/fc/fc_ns.h
new file mode 100644
index 000000000..4cf0a40a0
--- /dev/null
+++ b/include/uapi/scsi/fc/fc_ns.h
@@ -0,0 +1,196 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright(c) 2007 Intel Corporation. All rights reserved.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#ifndef _FC_NS_H_
+#define	_FC_NS_H_
+
+#include <linux/types.h>
+
+/*
+ * Fibre Channel Services - Name Service (dNS)
+ * From T11.org FC-GS-2 Rev 5.3 November 1998.
+ */
+
+/*
+ * Common-transport sub-type for Name Server.
+ */
+#define	FC_NS_SUBTYPE	    2	/* fs_ct_hdr.ct_fs_subtype */
+
+/*
+ * Name server Requests.
+ * Note:  this is an incomplete list, some unused requests are omitted.
+ */
+enum fc_ns_req {
+	FC_NS_GA_NXT =	0x0100,		/* get all next */
+	FC_NS_GI_A =	0x0101,		/* get identifiers - scope */
+	FC_NS_GPN_ID =	0x0112,		/* get port name by ID */
+	FC_NS_GNN_ID =	0x0113,		/* get node name by ID */
+	FC_NS_GSPN_ID = 0x0118,		/* get symbolic port name */
+	FC_NS_GID_PN =	0x0121,		/* get ID for port name */
+	FC_NS_GID_NN =	0x0131,		/* get IDs for node name */
+	FC_NS_GID_FT =	0x0171,		/* get IDs by FC4 type */
+	FC_NS_GPN_FT =	0x0172,		/* get port names by FC4 type */
+	FC_NS_GID_PT =	0x01a1,		/* get IDs by port type */
+	FC_NS_RPN_ID =	0x0212,		/* reg port name for ID */
+	FC_NS_RNN_ID =	0x0213,		/* reg node name for ID */
+	FC_NS_RFT_ID =	0x0217,		/* reg FC4 type for ID */
+	FC_NS_RSPN_ID =	0x0218,		/* reg symbolic port name */
+	FC_NS_RFF_ID =	0x021f,		/* reg FC4 Features for ID */
+	FC_NS_RSNN_NN =	0x0239,		/* reg symbolic node name */
+};
+
+/*
+ * Port type values.
+ */
+enum fc_ns_pt {
+	FC_NS_UNID_PORT = 0x00,	/* unidentified */
+	FC_NS_N_PORT =	0x01,	/* N port */
+	FC_NS_NL_PORT =	0x02,	/* NL port */
+	FC_NS_FNL_PORT = 0x03,	/* F/NL port */
+	FC_NS_NX_PORT =	0x7f,	/* Nx port */
+	FC_NS_F_PORT =	0x81,	/* F port */
+	FC_NS_FL_PORT =	0x82,	/* FL port */
+	FC_NS_E_PORT =	0x84,	/* E port */
+	FC_NS_B_PORT =	0x85,	/* B port */
+};
+
+/*
+ * Port type object.
+ */
+struct fc_ns_pt_obj {
+	__u8		pt_type;
+};
+
+/*
+ * Port ID object
+ */
+struct fc_ns_fid {
+	__u8		fp_flags;	/* flags for responses only */
+	__u8		fp_fid[3];
+};
+
+/*
+ * fp_flags in port ID object, for responses only.
+ */
+#define	FC_NS_FID_LAST	0x80		/* last object */
+
+/*
+ * FC4-types object.
+ */
+#define	FC_NS_TYPES	256	/* number of possible FC-4 types */
+#define	FC_NS_BPW	32	/* bits per word in bitmap */
+
+struct fc_ns_fts {
+	__be32	ff_type_map[FC_NS_TYPES / FC_NS_BPW]; /* bitmap of FC-4 types */
+};
+
+/*
+ * FC4-features object.
+ */
+struct fc_ns_ff	{
+	__be32	fd_feat[FC_NS_TYPES * 4 / FC_NS_BPW]; /* 4-bits per FC-type */
+};
+
+/*
+ * GID_PT request.
+ */
+struct fc_ns_gid_pt {
+	__u8		fn_pt_type;
+	__u8		fn_domain_id_scope;
+	__u8		fn_area_id_scope;
+	__u8		fn_resvd;
+};
+
+/*
+ * GID_FT or GPN_FT request.
+ */
+struct fc_ns_gid_ft {
+	__u8		fn_resvd;
+	__u8		fn_domain_id_scope;
+	__u8		fn_area_id_scope;
+	__u8		fn_fc4_type;
+};
+
+/*
+ * GPN_FT response.
+ */
+struct fc_gpn_ft_resp {
+	__u8		fp_flags;	/* see fp_flags definitions above */
+	__u8		fp_fid[3];	/* port ID */
+	__be32		fp_resvd;
+	__be64		fp_wwpn;	/* port name */
+};
+
+/*
+ * GID_PN request
+ */
+struct fc_ns_gid_pn {
+	__be64     fn_wwpn;    /* port name */
+};
+
+/*
+ * GID_PN response or GSPN_ID request
+ */
+struct fc_gid_pn_resp {
+	__u8      fp_resvd;
+	__u8      fp_fid[3];     /* port ID */
+};
+
+/*
+ * GSPN_ID response
+ */
+struct fc_gspn_resp {
+	__u8	fp_name_len;
+	char	fp_name[];
+};
+
+/*
+ * RFT_ID request - register FC-4 types for ID.
+ */
+struct fc_ns_rft_id {
+	struct fc_ns_fid fr_fid;	/* port ID object */
+	struct fc_ns_fts fr_fts;	/* FC-4 types object */
+};
+
+/*
+ * RPN_ID request - register port name for ID.
+ * RNN_ID request - register node name for ID.
+ */
+struct fc_ns_rn_id {
+	struct fc_ns_fid fr_fid;	/* port ID object */
+	__be64		fr_wwn;		/* node name or port name */
+} __attribute__((__packed__));
+
+/*
+ * RSNN_NN request - register symbolic node name
+ */
+struct fc_ns_rsnn {
+	__be64		fr_wwn;		/* node name */
+	__u8		fr_name_len;
+	char		fr_name[];
+} __attribute__((__packed__));
+
+/*
+ * RSPN_ID request - register symbolic port name
+ */
+struct fc_ns_rspn {
+	struct fc_ns_fid fr_fid;	/* port ID object */
+	__u8		fr_name_len;
+	char		fr_name[];
+} __attribute__((__packed__));
+
+/*
+ * RFF_ID request - register FC-4 Features for ID.
+ */
+struct fc_ns_rff_id {
+	struct fc_ns_fid fr_fid;	/* port ID object */
+	__u8		fr_resvd[2];
+	__u8		fr_feat;	/* FC-4 Feature bits */
+	__u8		fr_type;	/* FC-4 type */
+} __attribute__((__packed__));
+
+#endif /* _FC_NS_H_ */
diff --git a/include/uapi/scsi/scsi_bsg_fc.h b/include/uapi/scsi/scsi_bsg_fc.h
new file mode 100644
index 000000000..3ae65e932
--- /dev/null
+++ b/include/uapi/scsi/scsi_bsg_fc.h
@@ -0,0 +1,308 @@
+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+/*
+ *  FC Transport BSG Interface
+ *
+ *  Copyright (C) 2008   James Smart, Emulex Corporation
+ */
+
+#ifndef SCSI_BSG_FC_H
+#define SCSI_BSG_FC_H
+
+#include <linux/types.h>
+
+/*
+ * This file intended to be included by both kernel and user space
+ */
+
+/*
+ * FC Transport SGIO v4 BSG Message Support
+ */
+
+/* Default BSG request timeout (in seconds) */
+#define FC_DEFAULT_BSG_TIMEOUT		(10 * HZ)
+
+
+/*
+ * Request Message Codes supported by the FC Transport
+ */
+
+/* define the class masks for the message codes */
+#define FC_BSG_CLS_MASK		0xF0000000	/* find object class */
+#define FC_BSG_HST_MASK		0x80000000	/* fc host class */
+#define FC_BSG_RPT_MASK		0x40000000	/* fc rport class */
+
+	/* fc_host Message Codes */
+#define FC_BSG_HST_ADD_RPORT		(FC_BSG_HST_MASK | 0x00000001)
+#define FC_BSG_HST_DEL_RPORT		(FC_BSG_HST_MASK | 0x00000002)
+#define FC_BSG_HST_ELS_NOLOGIN		(FC_BSG_HST_MASK | 0x00000003)
+#define FC_BSG_HST_CT			(FC_BSG_HST_MASK | 0x00000004)
+#define FC_BSG_HST_VENDOR		(FC_BSG_HST_MASK | 0x000000FF)
+
+	/* fc_rport Message Codes */
+#define FC_BSG_RPT_ELS			(FC_BSG_RPT_MASK | 0x00000001)
+#define FC_BSG_RPT_CT			(FC_BSG_RPT_MASK | 0x00000002)
+
+
+
+/*
+ * FC Address Identifiers in Message Structures :
+ *
+ *   Whenever a command payload contains a FC Address Identifier
+ *   (aka port_id), the value is effectively in big-endian
+ *   order, thus the array elements are decoded as follows:
+ *     element [0] is bits 23:16 of the FC Address Identifier
+ *     element [1] is bits 15:8 of the FC Address Identifier
+ *     element [2] is bits 7:0 of the FC Address Identifier
+ */
+
+
+/*
+ * FC Host Messages
+ */
+
+/* FC_BSG_HST_ADDR_PORT : */
+
+/* Request:
+ * This message requests the FC host to login to the remote port
+ * at the specified N_Port_Id.  The remote port is to be enumerated
+ * with the transport upon completion of the login.
+ */
+struct fc_bsg_host_add_rport {
+	__u8	reserved;
+
+	/* FC Address Identier of the remote port to login to */
+	__u8	port_id[3];
+};
+
+/* Response:
+ * There is no additional response data - fc_bsg_reply->result is sufficient
+ */
+
+
+/* FC_BSG_HST_DEL_RPORT : */
+
+/* Request:
+ * This message requests the FC host to remove an enumerated
+ * remote port and to terminate the login to it.
+ *
+ * Note: The driver is free to reject this request if it desires to
+ * remain logged in with the remote port.
+ */
+struct fc_bsg_host_del_rport {
+	__u8	reserved;
+
+	/* FC Address Identier of the remote port to logout of */
+	__u8	port_id[3];
+};
+
+/* Response:
+ * There is no additional response data - fc_bsg_reply->result is sufficient
+ */
+
+
+/* FC_BSG_HST_ELS_NOLOGIN : */
+
+/* Request:
+ * This message requests the FC_Host to send an ELS to a specific
+ * N_Port_ID. The host does not need to log into the remote port,
+ * nor does it need to enumerate the rport for further traffic
+ * (although, the FC host is free to do so if it desires).
+ */
+struct fc_bsg_host_els {
+	/*
+	 * ELS Command Code being sent (must be the same as byte 0
+	 * of the payload)
+	 */
+	__u8	command_code;
+
+	/* FC Address Identier of the remote port to send the ELS to */
+	__u8	port_id[3];
+};
+
+/* Response:
+ */
+/* fc_bsg_ctels_reply->status values */
+#define FC_CTELS_STATUS_OK	0x00000000
+#define FC_CTELS_STATUS_REJECT	0x00000001
+#define FC_CTELS_STATUS_P_RJT	0x00000002
+#define FC_CTELS_STATUS_F_RJT	0x00000003
+#define FC_CTELS_STATUS_P_BSY	0x00000004
+#define FC_CTELS_STATUS_F_BSY	0x00000006
+struct fc_bsg_ctels_reply {
+	/*
+	 * Note: An ELS LS_RJT may be reported in 2 ways:
+	 *  a) A status of FC_CTELS_STATUS_OK is returned. The caller
+	 *     is to look into the ELS receive payload to determine
+	 *     LS_ACC or LS_RJT (by contents of word 0). The reject
+	 *     data will be in word 1.
+	 *  b) A status of FC_CTELS_STATUS_REJECT is returned, The
+	 *     rjt_data field will contain valid data.
+	 *
+	 * Note: ELS LS_ACC is determined by an FC_CTELS_STATUS_OK, and
+	 *   the receive payload word 0 indicates LS_ACC
+	 *   (e.g. value is 0x02xxxxxx).
+	 *
+	 * Note: Similarly, a CT Reject may be reported in 2 ways:
+	 *  a) A status of FC_CTELS_STATUS_OK is returned. The caller
+	 *     is to look into the CT receive payload to determine
+	 *     Accept or Reject (by contents of word 2). The reject
+	 *     data will be in word 3.
+	 *  b) A status of FC_CTELS_STATUS_REJECT is returned, The
+	 *     rjt_data field will contain valid data.
+	 *
+	 * Note: x_RJT/BSY status will indicae that the rjt_data field
+	 *   is valid and contains the reason/explanation values.
+	 */
+	__u32	status;		/* See FC_CTELS_STATUS_xxx */
+
+	/* valid if status is not FC_CTELS_STATUS_OK */
+	struct	{
+		__u8	action;		/* fragment_id for CT REJECT */
+		__u8	reason_code;
+		__u8	reason_explanation;
+		__u8	vendor_unique;
+	} rjt_data;
+};
+
+
+/* FC_BSG_HST_CT : */
+
+/* Request:
+ * This message requests that a CT Request be performed with the
+ * indicated N_Port_ID. The driver is responsible for logging in with
+ * the fabric and/or N_Port_ID, etc as per FC rules. This request does
+ * not mandate that the driver must enumerate the destination in the
+ * transport. The driver is allowed to decide whether to enumerate it,
+ * and whether to tear it down after the request.
+ */
+struct fc_bsg_host_ct {
+	__u8	reserved;
+
+	/* FC Address Identier of the remote port to send the ELS to */
+	__u8	port_id[3];
+
+	/*
+	 * We need words 0-2 of the generic preamble for the LLD's
+	 */
+	__u32	preamble_word0;	/* revision & IN_ID */
+	__u32	preamble_word1;	/* GS_Type, GS_SubType, Options, Rsvd */
+	__u32	preamble_word2;	/* Cmd Code, Max Size */
+
+};
+/* Response:
+ *
+ * The reply structure is an fc_bsg_ctels_reply structure
+ */
+
+
+/* FC_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 fc_bsg_host_vendor {
+	/*
+	 * Identifies the vendor that the message is formatted for. This
+	 * should be the recipient of the message.
+	 */
+	__u64 vendor_id;
+
+	/* start of vendor command area */
+	__u32 vendor_cmd[0];
+};
+
+/* Response:
+ */
+struct fc_bsg_host_vendor_reply {
+	/* start of vendor response area */
+	__u32 vendor_rsp[0];
+};
+
+
+
+/*
+ * FC Remote Port Messages
+ */
+
+/* FC_BSG_RPT_ELS : */
+
+/* Request:
+ * This message requests that an ELS be performed with the rport.
+ */
+struct fc_bsg_rport_els {
+	/*
+	 * ELS Command Code being sent (must be the same as
+	 * byte 0 of the payload)
+	 */
+	__u8 els_code;
+};
+
+/* Response:
+ *
+ * The reply structure is an fc_bsg_ctels_reply structure
+ */
+
+
+/* FC_BSG_RPT_CT : */
+
+/* Request:
+ * This message requests that a CT Request be performed with the rport.
+ */
+struct fc_bsg_rport_ct {
+	/*
+	 * We need words 0-2 of the generic preamble for the LLD's
+	 */
+	__u32	preamble_word0;	/* revision & IN_ID */
+	__u32	preamble_word1;	/* GS_Type, GS_SubType, Options, Rsvd */
+	__u32	preamble_word2;	/* Cmd Code, Max Size */
+};
+/* Response:
+ *
+ * The reply structure is an fc_bsg_ctels_reply structure
+ */
+
+
+
+
+/* request (CDB) structure of the sg_io_v4 */
+struct fc_bsg_request {
+	__u32 msgcode;
+	union {
+		struct fc_bsg_host_add_rport	h_addrport;
+		struct fc_bsg_host_del_rport	h_delrport;
+		struct fc_bsg_host_els		h_els;
+		struct fc_bsg_host_ct		h_ct;
+		struct fc_bsg_host_vendor	h_vendor;
+
+		struct fc_bsg_rport_els		r_els;
+		struct fc_bsg_rport_ct		r_ct;
+	} rqst_data;
+} __attribute__((packed));
+
+
+/* response (request sense data) structure of the sg_io_v4 */
+struct fc_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.
+	 */
+	__u32 result;
+
+	/* If there was reply_payload, how much was recevied ? */
+	__u32 reply_payload_rcv_len;
+
+	union {
+		struct fc_bsg_host_vendor_reply		vendor_reply;
+
+		struct fc_bsg_ctels_reply		ctels_reply;
+	} reply_data;
+};
+
+
+#endif /* SCSI_BSG_FC_H */
+
diff --git a/include/uapi/scsi/scsi_bsg_ufs.h b/include/uapi/scsi/scsi_bsg_ufs.h
new file mode 100644
index 000000000..d55f2176d
--- /dev/null
+++ b/include/uapi/scsi/scsi_bsg_ufs.h
@@ -0,0 +1,105 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * UFS Transport SGIO v4 BSG Message Support
+ *
+ * Copyright (C) 2011-2013 Samsung India Software Operations
+ * Copyright (C) 2018 Western Digital Corporation
+ */
+#ifndef SCSI_BSG_UFS_H
+#define SCSI_BSG_UFS_H
+
+#include <linux/types.h>
+/*
+ * This file intended to be included by both kernel and user space
+ */
+
+#define UFS_CDB_SIZE	16
+#define UPIU_TRANSACTION_UIC_CMD 0x1F
+/* uic commands are 4DW long, per UFSHCI V2.1 paragraph 5.6.1 */
+#define UIC_CMD_SIZE (sizeof(__u32) * 4)
+
+/**
+ * struct utp_upiu_header - UPIU header structure
+ * @dword_0: UPIU header DW-0
+ * @dword_1: UPIU header DW-1
+ * @dword_2: UPIU header DW-2
+ */
+struct utp_upiu_header {
+	__be32 dword_0;
+	__be32 dword_1;
+	__be32 dword_2;
+};
+
+/**
+ * struct utp_upiu_query - upiu request buffer structure for
+ * query request.
+ * @opcode: command to perform B-0
+ * @idn: a value that indicates the particular type of data B-1
+ * @index: Index to further identify data B-2
+ * @selector: Index to further identify data B-3
+ * @reserved_osf: spec reserved field B-4,5
+ * @length: number of descriptor bytes to read/write B-6,7
+ * @value: Attribute value to be written DW-5
+ * @reserved: spec reserved DW-6,7
+ */
+struct utp_upiu_query {
+	__u8 opcode;
+	__u8 idn;
+	__u8 index;
+	__u8 selector;
+	__be16 reserved_osf;
+	__be16 length;
+	__be32 value;
+	__be32 reserved[2];
+};
+
+/**
+ * struct utp_upiu_cmd - Command UPIU structure
+ * @data_transfer_len: Data Transfer Length DW-3
+ * @cdb: Command Descriptor Block CDB DW-4 to DW-7
+ */
+struct utp_upiu_cmd {
+	__be32 exp_data_transfer_len;
+	__u8 cdb[UFS_CDB_SIZE];
+};
+
+/**
+ * struct utp_upiu_req - general upiu request structure
+ * @header:UPIU header structure DW-0 to DW-2
+ * @sc: fields structure for scsi command DW-3 to DW-7
+ * @qr: fields structure for query request DW-3 to DW-7
+ * @uc: use utp_upiu_query to host the 4 dwords of uic command
+ */
+struct utp_upiu_req {
+	struct utp_upiu_header header;
+	union {
+		struct utp_upiu_cmd		sc;
+		struct utp_upiu_query		qr;
+		struct utp_upiu_query		uc;
+	};
+};
+
+/* request (CDB) structure of the sg_io_v4 */
+struct ufs_bsg_request {
+	__u32 msgcode;
+	struct utp_upiu_req upiu_req;
+};
+
+/* response (request sense data) structure of the sg_io_v4 */
+struct ufs_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.
+	 */
+	__u32 result;
+
+	/* If there was reply_payload, how much was received? */
+	__u32 reply_payload_rcv_len;
+
+	struct utp_upiu_req upiu_rsp;
+};
+#endif /* UFS_BSG_H */
diff --git a/include/uapi/scsi/scsi_netlink.h b/include/uapi/scsi/scsi_netlink.h
new file mode 100644
index 000000000..1b1737c3c
--- /dev/null
+++ b/include/uapi/scsi/scsi_netlink.h
@@ -0,0 +1,109 @@
+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+/*
+ *  SCSI Transport Netlink Interface
+ *    Used for the posting of outbound SCSI transport events
+ *
+ *  Copyright (C) 2006   James Smart, Emulex Corporation
+ */
+#ifndef SCSI_NETLINK_H
+#define SCSI_NETLINK_H
+
+#include <linux/netlink.h>
+#include <linux/types.h>
+
+/*
+ * This file intended to be included by both kernel and user space
+ */
+
+/* Single Netlink Message type to send all SCSI Transport messages */
+#define SCSI_TRANSPORT_MSG		NLMSG_MIN_TYPE + 1
+
+/* SCSI Transport Broadcast Groups */
+	/* leaving groups 0 and 1 unassigned */
+#define SCSI_NL_GRP_FC_EVENTS		(1<<2)		/* Group 2 */
+#define SCSI_NL_GRP_CNT			3
+
+
+/* SCSI_TRANSPORT_MSG event message header */
+struct scsi_nl_hdr {
+	__u8 version;
+	__u8 transport;
+	__u16 magic;
+	__u16 msgtype;
+	__u16 msglen;
+} __attribute__((aligned(sizeof(__u64))));
+
+/* scsi_nl_hdr->version value */
+#define SCSI_NL_VERSION				1
+
+/* scsi_nl_hdr->magic value */
+#define SCSI_NL_MAGIC				0xA1B2
+
+/* scsi_nl_hdr->transport value */
+#define SCSI_NL_TRANSPORT			0
+#define SCSI_NL_TRANSPORT_FC			1
+#define SCSI_NL_MAX_TRANSPORTS			2
+
+/* Transport-based scsi_nl_hdr->msgtype values are defined in each transport */
+
+/*
+ * GENERIC SCSI scsi_nl_hdr->msgtype Values
+ */
+	/* kernel -> user */
+#define SCSI_NL_SHOST_VENDOR			0x0001
+	/* user -> kernel */
+/* SCSI_NL_SHOST_VENDOR msgtype is kernel->user and user->kernel */
+
+
+/*
+ * Message Structures :
+ */
+
+/* macro to round up message lengths to 8byte boundary */
+#define SCSI_NL_MSGALIGN(len)		(((len) + 7) & ~7)
+
+
+/*
+ * SCSI HOST Vendor Unique messages :
+ *   SCSI_NL_SHOST_VENDOR
+ *
+ * Note: The Vendor Unique message payload will begin directly after
+ * 	 this structure, with the length of the payload per vmsg_datalen.
+ *
+ * Note: When specifying vendor_id, be sure to read the Vendor Type and ID
+ *   formatting requirements specified below
+ */
+struct scsi_nl_host_vendor_msg {
+	struct scsi_nl_hdr snlh;		/* must be 1st element ! */
+	__u64 vendor_id;
+	__u16 host_no;
+	__u16 vmsg_datalen;
+} __attribute__((aligned(sizeof(__u64))));
+
+
+/*
+ * Vendor ID:
+ *   If transports post vendor-unique events, they must pass a well-known
+ *   32-bit vendor identifier. This identifier consists of 8 bits indicating
+ *   the "type" of identifier contained, and 24 bits of id data.
+ *
+ *   Identifiers for each type:
+ *    PCI :  ID data is the 16 bit PCI Registered Vendor ID
+ */
+#define SCSI_NL_VID_TYPE_SHIFT		56
+#define SCSI_NL_VID_TYPE_MASK		((__u64)0xFF << SCSI_NL_VID_TYPE_SHIFT)
+#define SCSI_NL_VID_TYPE_PCI		((__u64)0x01 << SCSI_NL_VID_TYPE_SHIFT)
+#define SCSI_NL_VID_ID_MASK		(~ SCSI_NL_VID_TYPE_MASK)
+
+
+#define INIT_SCSI_NL_HDR(hdr, t, mtype, mlen)			\
+	{							\
+	(hdr)->version = SCSI_NL_VERSION;			\
+	(hdr)->transport = t;					\
+	(hdr)->magic = SCSI_NL_MAGIC;				\
+	(hdr)->msgtype = mtype;					\
+	(hdr)->msglen = mlen;					\
+	}
+
+#endif /* SCSI_NETLINK_H */
+
diff --git a/include/uapi/scsi/scsi_netlink_fc.h b/include/uapi/scsi/scsi_netlink_fc.h
new file mode 100644
index 000000000..7535253f1
--- /dev/null
+++ b/include/uapi/scsi/scsi_netlink_fc.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+/*
+ *  FC Transport Netlink Interface
+ *
+ *  Copyright (C) 2006   James Smart, Emulex Corporation
+ */
+#ifndef SCSI_NETLINK_FC_H
+#define SCSI_NETLINK_FC_H
+
+#include <linux/types.h>
+#include <scsi/scsi_netlink.h>
+
+/*
+ * This file intended to be included by both kernel and user space
+ */
+
+/*
+ * FC Transport Message Types
+ */
+	/* kernel -> user */
+#define FC_NL_ASYNC_EVENT			0x0100
+	/* user -> kernel */
+/* none */
+
+
+/*
+ * Message Structures :
+ */
+
+/* macro to round up message lengths to 8byte boundary */
+#define FC_NL_MSGALIGN(len)		(((len) + 7) & ~7)
+
+
+/*
+ * FC Transport Broadcast Event Message :
+ *   FC_NL_ASYNC_EVENT
+ *
+ * Note: if Vendor Unique message, &event_data will be  start of
+ * 	 vendor unique payload, and the length of the payload is
+ *       per event_datalen
+ *
+ * Note: When specifying vendor_id, be sure to read the Vendor Type and ID
+ *   formatting requirements specified in scsi_netlink.h
+ */
+struct fc_nl_event {
+	struct scsi_nl_hdr snlh;		/* must be 1st element ! */
+	__u64 seconds;
+	__u64 vendor_id;
+	__u16 host_no;
+	__u16 event_datalen;
+	__u32 event_num;
+	__u32 event_code;
+	__u32 event_data;
+} __attribute__((aligned(sizeof(__u64))));
+
+
+#endif /* SCSI_NETLINK_FC_H */
+