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2024-02-19 1c055e55a242a33e574e48be530e06770a210dcd

 kernel/samples/bpf/test_map_in_map_kern.c
..
..
@@ -10,65 +10,68 @@
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 #include <linux/version.h>
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 #include <uapi/linux/bpf.h>
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 #include <uapi/linux/in6.h>
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-#include "bpf_helpers.h"
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+#include <bpf/bpf_helpers.h>
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+#include <bpf/bpf_tracing.h>
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+#include <bpf/bpf_core_read.h>
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+#include "trace_common.h"
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17
 
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 #define MAX_NR_PORTS 65536
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19
 
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 /* map #0 */
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-struct bpf_map_def SEC("maps") port_a = {
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-	.type = BPF_MAP_TYPE_ARRAY,
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-	.key_size = sizeof(u32),
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-	.value_size = sizeof(int),
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-	.max_entries = MAX_NR_PORTS,
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-};
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+struct inner_a {
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+	__uint(type, BPF_MAP_TYPE_ARRAY);
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+	__type(key, u32);
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+	__type(value, int);
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+	__uint(max_entries, MAX_NR_PORTS);
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+} port_a SEC(".maps");
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27
 
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 /* map #1 */
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-struct bpf_map_def SEC("maps") port_h = {
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-	.type = BPF_MAP_TYPE_HASH,
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-	.key_size = sizeof(u32),
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-	.value_size = sizeof(int),
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-	.max_entries = 1,
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-};
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+struct inner_h {
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+	__uint(type, BPF_MAP_TYPE_HASH);
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+	__type(key, u32);
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+	__type(value, int);
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+	__uint(max_entries, 1);
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+} port_h SEC(".maps");
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 /* map #2 */
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-struct bpf_map_def SEC("maps") reg_result_h = {
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-	.type = BPF_MAP_TYPE_HASH,
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-	.key_size = sizeof(u32),
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-	.value_size = sizeof(int),
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-	.max_entries = 1,
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-};
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+struct {
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+	__uint(type, BPF_MAP_TYPE_HASH);
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+	__type(key, u32);
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+	__type(value, int);
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+	__uint(max_entries, 1);
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+} reg_result_h SEC(".maps");
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43
 
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 /* map #3 */
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-struct bpf_map_def SEC("maps") inline_result_h = {
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-	.type = BPF_MAP_TYPE_HASH,
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-	.key_size = sizeof(u32),
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-	.value_size = sizeof(int),
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-	.max_entries = 1,
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-};
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+struct {
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+	__uint(type, BPF_MAP_TYPE_HASH);
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+	__type(key, u32);
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+	__type(value, int);
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+	__uint(max_entries, 1);
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+} inline_result_h SEC(".maps");
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 /* map #4 */ /* Test case #0 */
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-struct bpf_map_def SEC("maps") a_of_port_a = {
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-	.type = BPF_MAP_TYPE_ARRAY_OF_MAPS,
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-	.key_size = sizeof(u32),
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-	.inner_map_idx = 0, /* map_fd[0] is port_a */
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-	.max_entries = MAX_NR_PORTS,
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-};
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+struct {
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+	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
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+	__uint(max_entries, MAX_NR_PORTS);
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+	__uint(key_size, sizeof(u32));
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+	__array(values, struct inner_a); /* use inner_a as inner map */
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+} a_of_port_a SEC(".maps");
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59
 
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 /* map #5 */ /* Test case #1 */
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-struct bpf_map_def SEC("maps") h_of_port_a = {
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-	.type = BPF_MAP_TYPE_HASH_OF_MAPS,
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-	.key_size = sizeof(u32),
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-	.inner_map_idx = 0, /* map_fd[0] is port_a */
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-	.max_entries = 1,
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-};
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+struct {
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+	__uint(type, BPF_MAP_TYPE_HASH_OF_MAPS);
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+	__uint(max_entries, 1);
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+	__uint(key_size, sizeof(u32));
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+	__array(values, struct inner_a); /* use inner_a as inner map */
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+} h_of_port_a SEC(".maps");
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67
 
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 /* map #6 */ /* Test case #2 */
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-struct bpf_map_def SEC("maps") h_of_port_h = {
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-	.type = BPF_MAP_TYPE_HASH_OF_MAPS,
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-	.key_size = sizeof(u32),
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-	.inner_map_idx = 1, /* map_fd[1] is port_h */
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-	.max_entries = 1,
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-};
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+struct {
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+	__uint(type, BPF_MAP_TYPE_HASH_OF_MAPS);
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+	__uint(max_entries, 1);
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+	__uint(key_size, sizeof(u32));
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+	__array(values, struct inner_h); /* use inner_h as inner map */
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+} h_of_port_h SEC(".maps");
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75
 
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 static __always_inline int do_reg_lookup(void *inner_map, u32 port)
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 {
..
..
@@ -100,7 +103,7 @@
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 	return result ? *result : -ENOENT;
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 }
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-SEC("kprobe/sys_connect")
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+SEC("kprobe/__sys_connect")
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107
 int trace_sys_connect(struct pt_regs *ctx)
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 {
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 	struct sockaddr_in6 *in6;
..
..
@@ -110,13 +113,13 @@
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 	void *outer_map, *inner_map;
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 	bool inline_hash = false;
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115
 
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-	in6 = (struct sockaddr_in6 *)PT_REGS_PARM2(ctx);
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-	addrlen = (int)PT_REGS_PARM3(ctx);
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+	in6 = (struct sockaddr_in6 *)PT_REGS_PARM2_CORE(ctx);
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+	addrlen = (int)PT_REGS_PARM3_CORE(ctx);
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118
 
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 	if (addrlen != sizeof(*in6))
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 		return 0;
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121
 
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-	ret = bpf_probe_read(dst6, sizeof(dst6), &in6->sin6_addr);
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+	ret = bpf_probe_read_user(dst6, sizeof(dst6), &in6->sin6_addr);
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 	if (ret) {
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 		inline_ret = ret;
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 		goto done;
..
..
@@ -127,7 +130,7 @@
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130
 
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 	test_case = dst6[7];
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132
 
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-	ret = bpf_probe_read(&port, sizeof(port), &in6->sin6_port);
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+	ret = bpf_probe_read_user(&port, sizeof(port), &in6->sin6_port);
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 	if (ret) {
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 		inline_ret = ret;
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 		goto done;