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