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Mode	Name	Size
-rw-r--r--	Kconfig	1601	logstatsplain
-rw-r--r--	Makefile	409	logstatsplain
-rw-r--r--	caif_dev.c	13226	logstatsplain
-rw-r--r--	caif_socket.c	27160	logstatsplain
-rw-r--r--	caif_usb.c	5308	logstatsplain
-rw-r--r--	cfcnfg.c	14506	logstatsplain
-rw-r--r--	cfctrl.c	16051	logstatsplain
-rw-r--r--	cfdbgl.c	1496	logstatsplain
-rw-r--r--	cfdgml.c	2846	logstatsplain
-rw-r--r--	cffrml.c	4561	logstatsplain
-rw-r--r--	cfmuxl.c	6384	logstatsplain
-rw-r--r--	cfpkt_skbuff.c	8325	logstatsplain
-rw-r--r--	cfrfml.c	6435	logstatsplain
-rw-r--r--	cfserl.c	4409	logstatsplain
-rw-r--r--	cfsrvl.c	5582	logstatsplain
-rw-r--r--	cfutill.c	2861	logstatsplain
-rw-r--r--	cfveil.c	2583	logstatsplain
-rw-r--r--	cfvidl.c	1741	logstatsplain
-rw-r--r--	chnl_net.c	13387	logstatsplain

generated by cgit v1.2.3 (git 2.25.1) at 2024-09-11 20:04:29 +0000

// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)

/*
 * common eBPF ELF operations.
 *
 * Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org>
 * Copyright (C) 2015 Wang Nan <wangnan0@huawei.com>
 * Copyright (C) 2015 Huawei Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License (not later!)
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not,  see <http://www.gnu.org/licenses>
 */

#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include <unistd.h>
#include <asm/unistd.h>
#include <linux/bpf.h>
#include "bpf.h"
#include "libbpf.h"
#include <errno.h>

/*
 * When building perf, unistd.h is overridden. __NR_bpf is
 * required to be defined explicitly.
 */
#ifndef __NR_bpf
# if defined(__i386__)
#  define __NR_bpf 357
# elif defined(__x86_64__)
#  define __NR_bpf 321
# elif defined(__aarch64__)
#  define __NR_bpf 280
# elif defined(__sparc__)
#  define __NR_bpf 349
# elif defined(__s390__)
#  define __NR_bpf 351
# else
#  error __NR_bpf not defined. libbpf does not support your arch.
# endif
#endif

#ifndef min
#define min(x, y) ((x) < (y) ? (x) : (y))
#endif

static inline __u64 ptr_to_u64(const void *ptr)
{
	return (__u64) (unsigned long) ptr;
}

static inline int sys_bpf(enum bpf_cmd cmd, union bpf_attr *attr,
			  unsigned int size)
{
	return syscall(__NR_bpf, cmd, attr, size);
}

static inline int sys_bpf_prog_load(union bpf_attr *attr, unsigned int size)
{
	int fd;

	do {
		fd = sys_bpf(BPF_PROG_LOAD, attr, size);
	} while (fd < 0 && errno == EAGAIN);

	return fd;
}

int bpf_create_map_xattr(const struct bpf_create_map_attr *create_attr)
{
	__u32 name_len = create_attr->name ? strlen(create_attr->name) : 0;
	union bpf_attr attr;

	memset(&attr, '\0', sizeof(attr));

	attr.map_type = create_attr->map_type;
	attr.key_size = create_attr->key_size;
	attr.value_size = create_attr->value_size;
	attr.max_entries = create_attr->max_entries;
	attr.map_flags = create_attr->map_flags;
	memcpy(attr.map_name, create_attr->name,
	       min(name_len, BPF_OBJ_NAME_LEN - 1));
	attr.numa_node = create_attr->numa_node;
	attr.btf_fd = create_attr->btf_fd;
	attr.btf_key_type_id = create_attr->btf_key_type_id;
	attr.btf_value_type_id = create_attr->btf_value_type_id;
	attr.map_ifindex = create_attr->map_ifindex;
	attr.inner_map_fd = create_attr->inner_map_fd;

	return sys_bpf(BPF_MAP_CREATE, &attr, sizeof(attr));
}

int bpf_create_map_node(enum bpf_map_type map_type, const char *name,
			int key_size, int value_size, int max_entries,
			__u32 map_flags, int node)
{
	struct bpf_create_map_attr map_attr = {};

	map_attr.name = name;
	map_attr.map_type = map_type;
	map_attr.map_flags = map_flags;
	map_attr.key_size = key_size;
	map_attr.value_size = value_size;
	map_attr.max_entries = max_entries;
	if (node >= 0) {
		map_attr.numa_node = node;
		map_attr.map_flags |= BPF_F_NUMA_NODE;
	}

	return bpf_create_map_xattr(&map_attr);
}

int bpf_create_map(enum bpf_map_type map_type, int key_size,
		   int value_size, int max_entries, __u32 map_flags)
{
	struct bpf_create_map_attr map_attr = {};

	map_attr.map_type = map_type;
	map_attr.map_flags = map_flags;
	map_attr.key_size = key_size;
	map_attr.value_size = value_size;
	map_attr.max_entries = max_entries;

	return bpf_create_map_xattr(&map_attr);
}

int bpf_create_map_name(enum bpf_map_type map_type, const char *name,
			int key_size, int value_size, int max_entries,
			__u32 map_flags)
{
	struct bpf_create_map_attr map_attr = {};

	map_attr.name = name;
	map_attr.map_type = map_type;
	map_attr.map_flags = map_flags;
	map_attr.key_size = key_size;
	map_attr.value_size = value_size;
	map_attr.max_entries = max_entries;

	return bpf_create_map_xattr(&map_attr);
}

int bpf_create_map_in_map_node(enum bpf_map_type map_type, const char *name,
			       int key_size, int inner_map_fd, int max_entries,
			       __u32 map_flags, int node)
{
	__u32 name_len = name ? strlen(name) : 0;
	union bpf_attr attr;

	memset(&attr, '\0', sizeof(attr));

	attr.map_type = map_type;
	attr.key_size = key_size;
	attr.value_size = 4;
	attr.inner_map_fd = inner_map_fd;
	attr.max_entries = max_entries;
	attr.map_flags = map_flags;
	memcpy(attr.map_name, name, min(name_len, BPF_OBJ_NAME_LEN - 1));

	if (node >= 0) {
		attr.map_flags |= BPF_F_NUMA_NODE;
		attr.numa_node = node;
	}

	return sys_bpf(BPF_MAP_CREATE, &attr, sizeof(attr));
}

int bpf_create_map_in_map(enum bpf_map_type map_type, const char *name,
			  int key_size, int inner_map_fd, int max_entries,
			  __u32 map_flags)
{
	return bpf_create_map_in_map_node(map_type, name, key_size,
					  inner_map_fd, max_entries, map_flags,
					  -1);
}

static void *
alloc_zero_tailing_info(const void *orecord, __u32 cnt,
			__u32 actual_rec_size, __u32 expected_rec_size)
{
	__u64 info_len = actual_rec_size * cnt;
	void *info, *nrecord;
	int i;

	info = malloc(info_len);
	if (!info)
		return NULL;

	/* zero out bytes kernel does not understand */
	nrecord = info;
	for (i = 0; i < cnt; i++) {
		memcpy(nrecord, orecord, expected_rec_size);
		memset(nrecord + expected_rec_siz