53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*
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* Copyright 2015, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef APF_INTERPRETER_H_
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#define APF_INTERPRETER_H_
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Version of APF instruction set processed by accept_packet().
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* Should be returned by wifi_get_packet_filter_info.
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*/
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#define APF_VERSION 2
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/**
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* Runs a packet filtering program over a packet.
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*
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* @param program the program bytecode.
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* @param program_len the length of {@code apf_program} in bytes.
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* @param packet the packet bytes, starting from the 802.3 header and not
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* including any CRC bytes at the end.
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* @param packet_len the length of {@code packet} in bytes.
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* @param filter_age the number of seconds since the filter was programmed.
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*
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* @return non-zero if packet should be passed to AP, zero if
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* packet should be dropped.
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*/
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int accept_packet(const uint8_t* program, uint32_t program_len,
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const uint8_t* packet, uint32_t packet_len,
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uint32_t filter_age);
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#ifdef __cplusplus
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}
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#endif
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#endif // APF_INTERPRETER_H_
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