| /* |
| * GPL HEADER START |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * as published by the Free Software Foundation. |
| * |
| * 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 version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2012, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| */ |
| |
| #ifndef __LIBCFS_LIBCFS_H__ |
| #define __LIBCFS_LIBCFS_H__ |
| |
| #include "linux/libcfs.h" |
| #include <linux/gfp.h> |
| |
| #include "curproc.h" |
| |
| static inline int __is_po2(unsigned long long val) |
| { |
| return !(val & (val - 1)); |
| } |
| |
| #define IS_PO2(val) __is_po2((unsigned long long)(val)) |
| |
| #define LOWEST_BIT_SET(x) ((x) & ~((x) - 1)) |
| |
| /* |
| * Lustre Error Checksum: calculates checksum |
| * of Hex number by XORing each bit. |
| */ |
| #define LERRCHKSUM(hexnum) (((hexnum) & 0xf) ^ ((hexnum) >> 4 & 0xf) ^ \ |
| ((hexnum) >> 8 & 0xf)) |
| |
| #define LUSTRE_SRV_LNET_PID LUSTRE_LNET_PID |
| |
| #include <linux/list.h> |
| |
| /* need both kernel and user-land acceptor */ |
| #define LNET_ACCEPTOR_MIN_RESERVED_PORT 512 |
| #define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023 |
| |
| /* |
| * libcfs pseudo device operations |
| * |
| * It's just draft now. |
| */ |
| |
| struct cfs_psdev_file { |
| unsigned long off; |
| void *private_data; |
| unsigned long reserved1; |
| unsigned long reserved2; |
| }; |
| |
| struct cfs_psdev_ops { |
| int (*p_open)(unsigned long, void *); |
| int (*p_close)(unsigned long, void *); |
| int (*p_read)(struct cfs_psdev_file *, char *, unsigned long); |
| int (*p_write)(struct cfs_psdev_file *, char *, unsigned long); |
| int (*p_ioctl)(struct cfs_psdev_file *, unsigned long, void *); |
| }; |
| |
| /* |
| * Drop into debugger, if possible. Implementation is provided by platform. |
| */ |
| |
| void cfs_enter_debugger(void); |
| |
| /* |
| * Defined by platform |
| */ |
| int unshare_fs_struct(void); |
| sigset_t cfs_get_blocked_sigs(void); |
| sigset_t cfs_block_allsigs(void); |
| sigset_t cfs_block_sigs(unsigned long sigs); |
| sigset_t cfs_block_sigsinv(unsigned long sigs); |
| void cfs_restore_sigs(sigset_t); |
| int cfs_signal_pending(void); |
| void cfs_clear_sigpending(void); |
| |
| /* |
| * Random number handling |
| */ |
| |
| /* returns a random 32-bit integer */ |
| unsigned int cfs_rand(void); |
| /* seed the generator */ |
| void cfs_srand(unsigned int, unsigned int); |
| void cfs_get_random_bytes(void *buf, int size); |
| |
| #include "libcfs_debug.h" |
| #include "libcfs_cpu.h" |
| #include "libcfs_private.h" |
| #include "libcfs_ioctl.h" |
| #include "libcfs_prim.h" |
| #include "libcfs_time.h" |
| #include "libcfs_string.h" |
| #include "libcfs_kernelcomm.h" |
| #include "libcfs_workitem.h" |
| #include "libcfs_hash.h" |
| #include "libcfs_fail.h" |
| #include "libcfs_crypto.h" |
| |
| /* container_of depends on "likely" which is defined in libcfs_private.h */ |
| static inline void *__container_of(void *ptr, unsigned long shift) |
| { |
| if (IS_ERR_OR_NULL(ptr)) |
| return ptr; |
| return (char *)ptr - shift; |
| } |
| |
| #define container_of0(ptr, type, member) \ |
| ((type *)__container_of((void *)(ptr), offsetof(type, member))) |
| |
| #define _LIBCFS_H |
| |
| void *libcfs_kvzalloc(size_t size, gfp_t flags); |
| void *libcfs_kvzalloc_cpt(struct cfs_cpt_table *cptab, int cpt, size_t size, |
| gfp_t flags); |
| |
| extern struct miscdevice libcfs_dev; |
| /** |
| * The path of debug log dump upcall script. |
| */ |
| extern char lnet_upcall[1024]; |
| extern char lnet_debug_log_upcall[1024]; |
| |
| extern struct cfs_psdev_ops libcfs_psdev_ops; |
| |
| extern struct cfs_wi_sched *cfs_sched_rehash; |
| |
| struct lnet_debugfs_symlink_def { |
| char *name; |
| char *target; |
| }; |
| |
| void lustre_insert_debugfs(struct ctl_table *table, |
| const struct lnet_debugfs_symlink_def *symlinks); |
| |
| #endif /* _LIBCFS_H */ |