4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library.
22 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Use is subject to license terms.
25 * Copyright (c) 2013, Intel Corporation.
28 * This file is part of Lustre, http://www.lustre.org/
30 * Author: Nathan Rutman <nathan.rutman@seagate.com>
32 * Kernel <-> userspace communication routines.
33 * The definitions below are used in the kernel and userspace.
36 #ifndef __UAPI_KERNELCOMM_H__
37 #define __UAPI_KERNELCOMM_H__
39 #include <linux/types.h>
41 #define LUSTRE_GENL_NAME "lustre"
42 #define LUSTRE_GENL_VERSION 0x1
45 * enum lustre_commands - Supported Lustre Netlink commands
47 * @LUSTRE_CMD_UNSPEC: unspecified command to catch errors
48 * @LUSTRE_CMD_DEVICES: command to manage the Lustre devices
50 enum lustre_commands {
51 LUSTRE_CMD_UNSPEC = 0,
52 LUSTRE_CMD_DEVICES = 1,
54 __LUSTRE_CMD_MAX_PLUS_ONE
57 #define LUSTRE_CMD_MAX (__LUSTRE_CMD_MAX_PLUS_ONE - 1)
59 /* KUC message header.
60 * All current and future KUC messages should use this header.
61 * To avoid having to include Lustre headers from libcfs, define this here.
65 __u8 kuc_transport; /* Each new Lustre feature should use a different
68 __u16 kuc_msgtype; /* Message type or opcode, transport-specific */
69 __u16 kuc_msglen; /* Including header */
70 } __attribute__((aligned(sizeof(__u64))));
73 #define KUC_MAGIC 0x191C /*Lustre9etLinC */
75 /* kuc_msgtype values are defined in each transport */
76 enum kuc_transport_type {
77 KUC_TRANSPORT_GENERIC = 1,
78 KUC_TRANSPORT_HSM = 2,
81 enum kuc_generic_message_type {
85 /* KUC Broadcast Groups. This determines which userspace process hears which
86 * messages. Mutliple transports may be used within a group, or multiple
87 * groups may use the same transport. Broadcast
88 * groups need not be used if e.g. a UID is specified instead;
89 * use group 0 to signify unicast.
91 #define KUC_GRP_HSM 0x02
92 #define KUC_GRP_MAX KUC_GRP_HSM
96 LK_FLG_DATANR = 0x0002,
100 /* kernelcomm control structure, passed from userspace to kernel.
101 * For compatibility with old copytools, users who pass ARCHIVE_IDs
102 * to kernel using lk_data_count and lk_data should fill lk_flags with
103 * LK_FLG_DATANR. Otherwise kernel will take lk_data_count as bitmap of
106 struct lustre_kernelcomm {
114 } __attribute__((packed));
116 #endif /* __UAPI_KERNELCOMM_H__ */