69 строки
2.1 KiB
C
69 строки
2.1 KiB
C
// Copyright (c) Microsoft Corporation
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// SPDX-License-Identifier: MIT
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#pragma once
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#include <stdint.h>
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#include "ebpf_structs.h"
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#ifndef __doxygen
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#define EBPF_HELPER(return_type, name, args) typedef return_type(*name##_t) args
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#endif
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// This file contains APIs for global helpers that are
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// exposed for use by all eBPF programs.
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/**
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* @brief Get a pointer to an entry in the map.
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*
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* @param[in] map Map to search.
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* @param[in] key Key to use when searching map.
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* @return Pointer to the value if found or NULL.
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*/
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EBPF_HELPER(void*, ebpf_map_lookup_element, (ebpf_map_definition_t * map, void* key));
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#ifndef __doxygen
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#define ebpf_map_lookup_element ((ebpf_map_lookup_element_t)1)
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#endif
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/**
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* @brief Insert or update an entry in the map.
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*
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* @param[in] map Map to update.
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* @param[in] key Key to use when searching and updating the map.
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* @param[in] value Value to insert into the map.
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* @retval EBPF_SUCCESS The operation was successful.
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* @retval EBPF_NO_MEMORY Unable to allocate resources for this
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* entry.
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*/
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EBPF_HELPER(int64_t, ebpf_map_update_element, (ebpf_map_definition_t * map, void* key, void* value, uint64_t flags));
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#ifndef __doxygen
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#define ebpf_map_update_element ((ebpf_map_update_element_t)2)
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#endif
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/**
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* @brief Remove an entry from the map.
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*
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* @param[in] map Map to update.
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* @param[in] key Key to use when searching and updating the map.
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* @retval EBPF_SUCCESS The operation was successful.
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* @retval EBPF_INVALID_ARGUMENT One or more parameters are
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* invalid.
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*/
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EBPF_HELPER(int64_t, ebpf_map_delete_element, (ebpf_map_definition_t * map, void* key));
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#ifndef __doxygen
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#define ebpf_map_delete_element ((ebpf_map_delete_element_t)3)
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#endif
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//
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// Defines for cross-platform compatibility.
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//
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#define bpf_map _ebpf_map_definition
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#define bpf_map_lookup_elem ebpf_map_lookup_element
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#define bpf_map_update_elem ebpf_map_update_element
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#define bpf_map_delete_elem ebpf_map_delete_element
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#define BPF_MAP_TYPE_UNSPECIFIED EBPF_MAP_TYPE_UNSPECIFIED
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#define BPF_MAP_TYPE_HASH EBPF_MAP_TYPE_HASH
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#define BPF_MAP_TYPE_ARRAY EBPF_MAP_TYPE_ARRAY
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