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Edit File : scsi_netlink.h \| Size : 3.58 KB
/* 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 * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * / #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 { uint8_t version; uint8_t transport; uint16_t magic; uint16_t msgtype; uint16_t msglen; } __attribute__((aligned(sizeof(uint64_t)))); / 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 ! / uint64_t vendor_id; uint16_t host_no; uint16_t vmsg_datalen; } __attribute__((aligned(sizeof(uint64_t)))); / * 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 */ Back

Edit File : scsi_netlink.h | Size : 3.58 KB

/* 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
 *
 *  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.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
#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 {
	uint8_t version;
	uint8_t transport;
	uint16_t magic;
	uint16_t msgtype;
	uint16_t msglen;
} __attribute__((aligned(sizeof(uint64_t))));

/* 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 ! */
	uint64_t vendor_id;
	uint16_t host_no;
	uint16_t vmsg_datalen;
} __attribute__((aligned(sizeof(uint64_t))));

/*
 * 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 */

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