/* 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
/* * 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
/* 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)
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