1e88899faSAndrew Melnychenko /*
2e88899faSAndrew Melnychenko * QEMU eBPF binary declaration routine.
3e88899faSAndrew Melnychenko *
4e88899faSAndrew Melnychenko * Developed by Daynix Computing LTD (http://www.daynix.com)
5e88899faSAndrew Melnychenko *
6e88899faSAndrew Melnychenko * Authors:
7e88899faSAndrew Melnychenko * Andrew Melnychenko <andrew@daynix.com>
8e88899faSAndrew Melnychenko *
9e88899faSAndrew Melnychenko * SPDX-License-Identifier: GPL-2.0-or-later
10e88899faSAndrew Melnychenko */
11e88899faSAndrew Melnychenko
12e88899faSAndrew Melnychenko #include "qemu/osdep.h"
13e88899faSAndrew Melnychenko #include "qemu/queue.h"
14e88899faSAndrew Melnychenko #include "qapi/error.h"
15e88899faSAndrew Melnychenko #include "qapi/qapi-commands-ebpf.h"
16e88899faSAndrew Melnychenko #include "ebpf/ebpf.h"
17e88899faSAndrew Melnychenko
18e88899faSAndrew Melnychenko typedef struct ElfBinaryDataEntry {
19e88899faSAndrew Melnychenko int id;
20e88899faSAndrew Melnychenko const void *data;
21e88899faSAndrew Melnychenko size_t datalen;
22e88899faSAndrew Melnychenko
23e88899faSAndrew Melnychenko QSLIST_ENTRY(ElfBinaryDataEntry) node;
24e88899faSAndrew Melnychenko } ElfBinaryDataEntry;
25e88899faSAndrew Melnychenko
26e88899faSAndrew Melnychenko static QSLIST_HEAD(, ElfBinaryDataEntry) ebpf_elf_obj_list =
27e88899faSAndrew Melnychenko QSLIST_HEAD_INITIALIZER();
28e88899faSAndrew Melnychenko
ebpf_register_binary_data(int id,const void * data,size_t datalen)29e88899faSAndrew Melnychenko void ebpf_register_binary_data(int id, const void *data, size_t datalen)
30e88899faSAndrew Melnychenko {
31e88899faSAndrew Melnychenko struct ElfBinaryDataEntry *dataentry = NULL;
32e88899faSAndrew Melnychenko
33e88899faSAndrew Melnychenko dataentry = g_new0(struct ElfBinaryDataEntry, 1);
34e88899faSAndrew Melnychenko dataentry->data = data;
35e88899faSAndrew Melnychenko dataentry->datalen = datalen;
36e88899faSAndrew Melnychenko dataentry->id = id;
37e88899faSAndrew Melnychenko
38e88899faSAndrew Melnychenko QSLIST_INSERT_HEAD(&ebpf_elf_obj_list, dataentry, node);
39e88899faSAndrew Melnychenko }
40e88899faSAndrew Melnychenko
ebpf_find_binary_by_id(int id,size_t * sz,Error ** errp)41e88899faSAndrew Melnychenko const void *ebpf_find_binary_by_id(int id, size_t *sz, Error **errp)
42e88899faSAndrew Melnychenko {
43e88899faSAndrew Melnychenko struct ElfBinaryDataEntry *it = NULL;
44e88899faSAndrew Melnychenko QSLIST_FOREACH(it, &ebpf_elf_obj_list, node) {
45e88899faSAndrew Melnychenko if (id == it->id) {
46e88899faSAndrew Melnychenko *sz = it->datalen;
47e88899faSAndrew Melnychenko return it->data;
48e88899faSAndrew Melnychenko }
49e88899faSAndrew Melnychenko }
50e88899faSAndrew Melnychenko
51e88899faSAndrew Melnychenko error_setg(errp, "can't find eBPF object with id: %d", id);
52e88899faSAndrew Melnychenko
53e88899faSAndrew Melnychenko return NULL;
54e88899faSAndrew Melnychenko }
55e88899faSAndrew Melnychenko
qmp_request_ebpf(EbpfProgramID id,Error ** errp)56e88899faSAndrew Melnychenko EbpfObject *qmp_request_ebpf(EbpfProgramID id, Error **errp)
57e88899faSAndrew Melnychenko {
58e88899faSAndrew Melnychenko EbpfObject *ret = NULL;
59e88899faSAndrew Melnychenko size_t size = 0;
60e88899faSAndrew Melnychenko const void *data = ebpf_find_binary_by_id(id, &size, errp);
61e88899faSAndrew Melnychenko if (!data) {
62e88899faSAndrew Melnychenko return NULL;
63e88899faSAndrew Melnychenko }
64e88899faSAndrew Melnychenko
65e88899faSAndrew Melnychenko ret = g_new0(EbpfObject, 1);
66e88899faSAndrew Melnychenko ret->object = g_base64_encode(data, size);
67e88899faSAndrew Melnychenko
68e88899faSAndrew Melnychenko return ret;
69e88899faSAndrew Melnychenko }
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