1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2 /*
3  *  FC Transport Netlink Interface
4  *
5  *  Copyright (C) 2006   James Smart, Emulex Corporation
6  */
7 #ifndef SCSI_NETLINK_FC_H
8 #define SCSI_NETLINK_FC_H
9 
10 #include <linux/types.h>
11 #include <scsi/scsi_netlink.h>
12 
13 /*
14  * This file intended to be included by both kernel and user space
15  */
16 
17 /*
18  * FC Transport Message Types
19  */
20 	/* kernel -> user */
21 #define FC_NL_ASYNC_EVENT			0x0100
22 	/* user -> kernel */
23 /* none */
24 
25 
26 /*
27  * Message Structures :
28  */
29 
30 /* macro to round up message lengths to 8byte boundary */
31 #define FC_NL_MSGALIGN(len)		(((len) + 7) & ~7)
32 
33 
34 /*
35  * FC Transport Broadcast Event Message :
36  *   FC_NL_ASYNC_EVENT
37  *
38  * Note: if Vendor Unique message, event_data_flex will be start of
39  * 	 vendor unique payload, and the length of the payload is
40  *       per event_datalen
41  *
42  * Note: When specifying vendor_id, be sure to read the Vendor Type and ID
43  *   formatting requirements specified in scsi_netlink.h
44  */
45 struct fc_nl_event {
46 	struct scsi_nl_hdr snlh;		/* must be 1st element ! */
47 	__u64 seconds;
48 	__u64 vendor_id;
49 	__u16 host_no;
50 	__u16 event_datalen;
51 	__u32 event_num;
52 	__u32 event_code;
53 	union {
54 		__u32 event_data;
55 		__DECLARE_FLEX_ARRAY(__u8, event_data_flex);
56 	};
57 } __attribute__((aligned(sizeof(__u64))));
58 
59 
60 #endif /* SCSI_NETLINK_FC_H */
61 
62