70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
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/*
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* QEMU eBPF binary declaration routine.
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*
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* Developed by Daynix Computing LTD (http://www.daynix.com)
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*
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* Authors:
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* Andrew Melnychenko <andrew@daynix.com>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "qemu/queue.h"
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#include "qapi/error.h"
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#include "qapi/qapi-commands-ebpf.h"
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#include "ebpf/ebpf.h"
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typedef struct ElfBinaryDataEntry {
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int id;
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const void *data;
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size_t datalen;
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QSLIST_ENTRY(ElfBinaryDataEntry) node;
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} ElfBinaryDataEntry;
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static QSLIST_HEAD(, ElfBinaryDataEntry) ebpf_elf_obj_list =
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QSLIST_HEAD_INITIALIZER();
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void ebpf_register_binary_data(int id, const void *data, size_t datalen)
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{
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struct ElfBinaryDataEntry *dataentry = NULL;
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dataentry = g_new0(struct ElfBinaryDataEntry, 1);
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dataentry->data = data;
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dataentry->datalen = datalen;
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dataentry->id = id;
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QSLIST_INSERT_HEAD(&ebpf_elf_obj_list, dataentry, node);
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}
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const void *ebpf_find_binary_by_id(int id, size_t *sz, Error **errp)
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{
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struct ElfBinaryDataEntry *it = NULL;
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QSLIST_FOREACH(it, &ebpf_elf_obj_list, node) {
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if (id == it->id) {
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*sz = it->datalen;
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return it->data;
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}
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}
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error_setg(errp, "can't find eBPF object with id: %d", id);
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return NULL;
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}
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EbpfObject *qmp_request_ebpf(EbpfProgramID id, Error **errp)
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{
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EbpfObject *ret = NULL;
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size_t size = 0;
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const void *data = ebpf_find_binary_by_id(id, &size, errp);
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if (!data) {
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return NULL;
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}
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ret = g_new0(EbpfObject, 1);
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ret->object = g_base64_encode(data, size);
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return ret;
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}
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