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samples: bpf: Replace sizeof(arr)/sizeof(arr[0]) with ARRAY_SIZE

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The ARRAY_SIZE macro is more compact and more formal in linux source.

Signed-off-by: Linkui Xiao <xiaolinkui@kylinos.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20220712072302.13761-1-xiaolinkui@kylinos.cn
This commit is contained in:
Linkui Xiao 2022-07-12 15:23:02 +08:00 committed by Andrii Nakryiko
parent 8ab4cdcf03
commit b1fc28b338
6 changed files with 12 additions and 6 deletions
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3
samples/bpf/fds_example.c
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@ -17,6 +17,7 @@
#include <bpf/libbpf.h>
#include "bpf_insn.h"
#include "sock_example.h"
#include "bpf_util.h"
#define BPF_F_PIN (1 << 0)
#define BPF_F_GET (1 << 1)
@ -52,7 +53,7 @@ static int bpf_prog_create(const char *object)
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_EXIT_INSN(),
};
size_t insns_cnt = sizeof(insns) / sizeof(struct bpf_insn);
size_t insns_cnt = ARRAY_SIZE(insns);
struct bpf_object *obj;
int err;

3
samples/bpf/sock_example.c
View File

@ -29,6 +29,7 @@
#include <bpf/bpf.h>
#include "bpf_insn.h"
#include "sock_example.h"
#include "bpf_util.h"
char bpf_log_buf[BPF_LOG_BUF_SIZE];
@ -58,7 +59,7 @@ static int test_sock(void)
BPF_MOV64_IMM(BPF_REG_0, 0), /* r0 = 0 */
BPF_EXIT_INSN(),
};
size_t insns_cnt = sizeof(prog) / sizeof(struct bpf_insn);
size_t insns_cnt = ARRAY_SIZE(prog);
LIBBPF_OPTS(bpf_prog_load_opts, opts,
.log_buf = bpf_log_buf,
.log_size = BPF_LOG_BUF_SIZE,

3
samples/bpf/test_cgrp2_attach.c
View File

@ -31,6 +31,7 @@
#include <bpf/bpf.h>
#include "bpf_insn.h"
#include "bpf_util.h"
enum {
MAP_KEY_PACKETS,
@ -70,7 +71,7 @@ static int prog_load(int map_fd, int verdict)
BPF_MOV64_IMM(BPF_REG_0, verdict), /* r0 = verdict */
BPF_EXIT_INSN(),
};
size_t insns_cnt = sizeof(prog) / sizeof(struct bpf_insn);
size_t insns_cnt = ARRAY_SIZE(prog);
LIBBPF_OPTS(bpf_prog_load_opts, opts,
.log_buf = bpf_log_buf,
.log_size = BPF_LOG_BUF_SIZE,

2
samples/bpf/test_lru_dist.c
View File

@ -523,7 +523,7 @@ int main(int argc, char **argv)
return -1;
}
for (f = 0; f < sizeof(map_flags) / sizeof(*map_flags); f++) {
for (f = 0; f < ARRAY_SIZE(map_flags); f++) {
test_lru_loss0(BPF_MAP_TYPE_LRU_HASH, map_flags[f]);
test_lru_loss1(BPF_MAP_TYPE_LRU_HASH, map_flags[f]);
test_parallel_lru_loss(BPF_MAP_TYPE_LRU_HASH, map_flags[f],

4
samples/bpf/test_map_in_map_user.c
View File

@ -12,6 +12,8 @@
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
#include "bpf_util.h"
static int map_fd[7];
#define PORT_A (map_fd[0])
@ -28,7 +30,7 @@ static const char * const test_names[] = {
"Hash of Hash",
};
#define NR_TESTS (sizeof(test_names) / sizeof(*test_names))
#define NR_TESTS ARRAY_SIZE(test_names)
static void check_map_id(int inner_map_fd, int map_in_map_fd, uint32_t key)
{

3
samples/bpf/tracex5_user.c
View File

@ -8,6 +8,7 @@
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
#include "trace_helpers.h"
#include "bpf_util.h"
#ifdef __mips__
#define MAX_ENTRIES 6000 /* MIPS n64 syscalls start at 5000 */
@ -24,7 +25,7 @@ static void install_accept_all_seccomp(void)
BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_ALLOW),
};
struct sock_fprog prog = {
.len = (unsigned short)(sizeof(filter)/sizeof(filter[0])),
.len = (unsigned short)ARRAY_SIZE(filter),
.filter = filter,
};
if (prctl(PR_SET_SECCOMP, 2, &prog))