1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/bpf.h> 3 #include <bpf/bpf_helpers.h> 4 #include <bpf/bpf_tracing.h> 5 6 char _license[] SEC("license") = "GPL"; 7 8 extern const void bpf_fentry_test1 __ksym; 9 extern const void bpf_fentry_test2 __ksym; 10 extern const void bpf_fentry_test3 __ksym; 11 extern const void bpf_fentry_test4 __ksym; 12 extern const void bpf_modify_return_test __ksym; 13 extern const void bpf_fentry_test6 __ksym; 14 extern const void bpf_fentry_test7 __ksym; 15 16 __u64 test1_result = 0; 17 SEC("fentry/bpf_fentry_test1") 18 int BPF_PROG(test1, int a) 19 { 20 __u64 addr = bpf_get_func_ip(ctx); 21 22 test1_result = (const void *) addr == &bpf_fentry_test1; 23 return 0; 24 } 25 26 __u64 test2_result = 0; 27 SEC("fexit/bpf_fentry_test2") 28 int BPF_PROG(test2, int a) 29 { 30 __u64 addr = bpf_get_func_ip(ctx); 31 32 test2_result = (const void *) addr == &bpf_fentry_test2; 33 return 0; 34 } 35 36 __u64 test3_result = 0; 37 SEC("kprobe/bpf_fentry_test3") 38 int test3(struct pt_regs *ctx) 39 { 40 __u64 addr = bpf_get_func_ip(ctx); 41 42 test3_result = (const void *) addr == &bpf_fentry_test3; 43 return 0; 44 } 45 46 __u64 test4_result = 0; 47 SEC("kretprobe/bpf_fentry_test4") 48 int BPF_KRETPROBE(test4) 49 { 50 __u64 addr = bpf_get_func_ip(ctx); 51 52 test4_result = (const void *) addr == &bpf_fentry_test4; 53 return 0; 54 } 55 56 __u64 test5_result = 0; 57 SEC("fmod_ret/bpf_modify_return_test") 58 int BPF_PROG(test5, int a, int *b, int ret) 59 { 60 __u64 addr = bpf_get_func_ip(ctx); 61 62 test5_result = (const void *) addr == &bpf_modify_return_test; 63 return ret; 64 } 65 66 __u64 test6_result = 0; 67 SEC("kprobe/bpf_fentry_test6+0x5") 68 int test6(struct pt_regs *ctx) 69 { 70 __u64 addr = bpf_get_func_ip(ctx); 71 72 test6_result = (const void *) addr == &bpf_fentry_test6 + 5; 73 return 0; 74 } 75 76 __u64 test7_result = 0; 77 SEC("kprobe/bpf_fentry_test7+5") 78 int test7(struct pt_regs *ctx) 79 { 80 __u64 addr = bpf_get_func_ip(ctx); 81 82 test7_result = (const void *) addr == &bpf_fentry_test7 + 5; 83 return 0; 84 } 85