1 /* 2 * Copyright 2015, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef APF_INTERPRETER_H_ 18 #define APF_INTERPRETER_H_ 19 20 #include <stdint.h> 21 22 #ifdef __cplusplus 23 extern "C" { 24 #endif 25 26 /** 27 * Version of APF instruction set processed by accept_packet(). 28 * Should be returned by wifi_get_packet_filter_info. 29 */ 30 #define APF_VERSION 2 31 32 /** 33 * Runs a packet filtering program over a packet. 34 * 35 * @param program the program bytecode. 36 * @param program_len the length of {@code apf_program} in bytes. 37 * @param packet the packet bytes, starting from the 802.3 header and not 38 * including any CRC bytes at the end. 39 * @param packet_len the length of {@code packet} in bytes. 40 * @param filter_age the number of seconds since the filter was programmed. 41 * 42 * @return non-zero if packet should be passed to AP, zero if 43 * packet should be dropped. 44 */ 45 int accept_packet(const uint8_t* program, uint32_t program_len, 46 const uint8_t* packet, uint32_t packet_len, 47 uint32_t filter_age); 48 49 #ifdef __cplusplus 50 } 51 #endif 52 53 #endif // APF_INTERPRETER_H_ 54
