1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2005 Cluster File Systems, Inc.
5 * Author: Nikita Danilov <nikita@clusterfs.com>
7 * This file is part of Lustre, http://www.lustre.org.
9 * Lustre is free software; you can redistribute it and/or
10 * modify it under the terms of version 2 of the GNU General Public
11 * License as published by the Free Software Foundation.
13 * Lustre is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with Lustre; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 # define EXPORT_SYMTAB
27 # define DEBUG_SUBSYSTEM S_LNET
29 #include <libcfs/libcfs.h>
32 * On-wire format is native kdev_t format of Linux kernel 2.6
35 WIRE_RDEV_MINORBITS = 20,
36 WIRE_RDEV_MINORMASK = ((1U << WIRE_RDEV_MINORBITS) - 1)
39 cfs_wire_rdev_t cfs_wire_rdev_build(cfs_major_nr_t major, cfs_minor_nr_t minor)
41 return (major << WIRE_RDEV_MINORBITS) | minor;
44 cfs_major_nr_t cfs_wire_rdev_major(cfs_wire_rdev_t rdev)
46 return rdev >> WIRE_RDEV_MINORBITS;
49 cfs_minor_nr_t cfs_wire_rdev_minor(cfs_wire_rdev_t rdev)
51 return rdev & WIRE_RDEV_MINORMASK;