| /* |
| * |
| * Wireless daemon for Linux |
| * |
| * Copyright (C) 2013-2014 Intel Corporation. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| */ |
| |
| #ifndef __UTIL_H |
| #define __UTIL_H |
| |
| #include <stdint.h> |
| #include <unistd.h> |
| |
| #define align_len(len, boundary) (((len)+(boundary)-1) & ~((boundary)-1)) |
| |
| #define container_of(ptr, type, member) ({ \ |
| const typeof( ((type *)0)->member ) *__mptr = (ptr); \ |
| (type *)( (char *)__mptr - offsetof(type,member) );}) |
| |
| #define MAC "%02x:%02x:%02x:%02x:%02x:%02x" |
| #define MAC_STR(a) a[0], a[1], a[2], a[3], a[4], a[5] |
| |
| const char *util_ssid_to_utf8(size_t len, const uint8_t *ssid); |
| bool util_ssid_is_utf8(size_t len, const uint8_t *ssid); |
| const char *util_address_to_string(const uint8_t *addr); |
| bool util_string_to_address(const char *str, uint8_t *addr); |
| bool util_is_group_address(const uint8_t *addr); |
| bool util_is_broadcast_address(const uint8_t *addr); |
| |
| static inline uint8_t util_bit_field(const uint8_t oct, int start, int num) |
| { |
| unsigned char mask = (1 << num) - 1; |
| return (oct >> start) & mask; |
| } |
| |
| static inline bool util_is_bit_set(const uint8_t oct, int bit) |
| { |
| int mask = 1 << bit; |
| return oct & mask ? true : false; |
| } |
| |
| static inline bool util_mem_is_zero(const uint8_t *field, size_t size) |
| { |
| size_t i; |
| |
| for (i = 0; i < size; i++) |
| if (field[i] != 0) |
| return false; |
| |
| return true; |
| } |
| |
| #endif /* __UTIL_H */ |