diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/atomics.c | 154 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/bind4_prog.c | 42 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/bind6_prog.c | 42 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/test_core_read_macros.c | 50 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/test_ksyms_module.c | 26 |
5 files changed, 306 insertions, 8 deletions
diff --git a/tools/testing/selftests/bpf/progs/atomics.c b/tools/testing/selftests/bpf/progs/atomics.c new file mode 100644 index 000000000000..c245345e41ca --- /dev/null +++ b/tools/testing/selftests/bpf/progs/atomics.c @@ -0,0 +1,154 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/bpf.h> +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_tracing.h> +#include <stdbool.h> + +#ifdef ENABLE_ATOMICS_TESTS +bool skip_tests __attribute((__section__(".data"))) = false; +#else +bool skip_tests = true; +#endif + +__u64 add64_value = 1; +__u64 add64_result = 0; +__u32 add32_value = 1; +__u32 add32_result = 0; +__u64 add_stack_value_copy = 0; +__u64 add_stack_result = 0; +__u64 add_noreturn_value = 1; + +SEC("fentry/bpf_fentry_test1") +int BPF_PROG(add, int a) +{ +#ifdef ENABLE_ATOMICS_TESTS + __u64 add_stack_value = 1; + + add64_result = __sync_fetch_and_add(&add64_value, 2); + add32_result = __sync_fetch_and_add(&add32_value, 2); + add_stack_result = __sync_fetch_and_add(&add_stack_value, 2); + add_stack_value_copy = add_stack_value; + __sync_fetch_and_add(&add_noreturn_value, 2); +#endif + + return 0; +} + +__s64 sub64_value = 1; +__s64 sub64_result = 0; +__s32 sub32_value = 1; +__s32 sub32_result = 0; +__s64 sub_stack_value_copy = 0; +__s64 sub_stack_result = 0; +__s64 sub_noreturn_value = 1; + +SEC("fentry/bpf_fentry_test1") +int BPF_PROG(sub, int a) +{ +#ifdef ENABLE_ATOMICS_TESTS + __u64 sub_stack_value = 1; + + sub64_result = __sync_fetch_and_sub(&sub64_value, 2); + sub32_result = __sync_fetch_and_sub(&sub32_value, 2); + sub_stack_result = __sync_fetch_and_sub(&sub_stack_value, 2); + sub_stack_value_copy = sub_stack_value; + __sync_fetch_and_sub(&sub_noreturn_value, 2); +#endif + + return 0; +} + +__u64 and64_value = (0x110ull << 32); +__u64 and64_result = 0; +__u32 and32_value = 0x110; +__u32 and32_result = 0; +__u64 and_noreturn_value = (0x110ull << 32); + +SEC("fentry/bpf_fentry_test1") +int BPF_PROG(and, int a) +{ +#ifdef ENABLE_ATOMICS_TESTS + + and64_result = __sync_fetch_and_and(&and64_value, 0x011ull << 32); + and32_result = __sync_fetch_and_and(&and32_value, 0x011); + __sync_fetch_and_and(&and_noreturn_value, 0x011ull << 32); +#endif + + return 0; +} + +__u64 or64_value = (0x110ull << 32); +__u64 or64_result = 0; +__u32 or32_value = 0x110; +__u32 or32_result = 0; +__u64 or_noreturn_value = (0x110ull << 32); + +SEC("fentry/bpf_fentry_test1") +int BPF_PROG(or, int a) +{ +#ifdef ENABLE_ATOMICS_TESTS + or64_result = __sync_fetch_and_or(&or64_value, 0x011ull << 32); + or32_result = __sync_fetch_and_or(&or32_value, 0x011); + __sync_fetch_and_or(&or_noreturn_value, 0x011ull << 32); +#endif + + return 0; +} + +__u64 xor64_value = (0x110ull << 32); +__u64 xor64_result = 0; +__u32 xor32_value = 0x110; +__u32 xor32_result = 0; +__u64 xor_noreturn_value = (0x110ull << 32); + +SEC("fentry/bpf_fentry_test1") +int BPF_PROG(xor, int a) +{ +#ifdef ENABLE_ATOMICS_TESTS + xor64_result = __sync_fetch_and_xor(&xor64_value, 0x011ull << 32); + xor32_result = __sync_fetch_and_xor(&xor32_value, 0x011); + __sync_fetch_and_xor(&xor_noreturn_value, 0x011ull << 32); +#endif + + return 0; +} + +__u64 cmpxchg64_value = 1; +__u64 cmpxchg64_result_fail = 0; +__u64 cmpxchg64_result_succeed = 0; +__u32 cmpxchg32_value = 1; +__u32 cmpxchg32_result_fail = 0; +__u32 cmpxchg32_result_succeed = 0; + +SEC("fentry/bpf_fentry_test1") +int BPF_PROG(cmpxchg, int a) +{ +#ifdef ENABLE_ATOMICS_TESTS + cmpxchg64_result_fail = __sync_val_compare_and_swap(&cmpxchg64_value, 0, 3); + cmpxchg64_result_succeed = __sync_val_compare_and_swap(&cmpxchg64_value, 1, 2); + + cmpxchg32_result_fail = __sync_val_compare_and_swap(&cmpxchg32_value, 0, 3); + cmpxchg32_result_succeed = __sync_val_compare_and_swap(&cmpxchg32_value, 1, 2); +#endif + + return 0; +} + +__u64 xchg64_value = 1; +__u64 xchg64_result = 0; +__u32 xchg32_value = 1; +__u32 xchg32_result = 0; + +SEC("fentry/bpf_fentry_test1") +int BPF_PROG(xchg, int a) +{ +#ifdef ENABLE_ATOMICS_TESTS + __u64 val64 = 2; + __u32 val32 = 2; + + xchg64_result = __sync_lock_test_and_set(&xchg64_value, val64); + xchg32_result = __sync_lock_test_and_set(&xchg32_value, val32); +#endif + + return 0; +} diff --git a/tools/testing/selftests/bpf/progs/bind4_prog.c b/tools/testing/selftests/bpf/progs/bind4_prog.c index c6520f21f5f5..115a3b0ad984 100644 --- a/tools/testing/selftests/bpf/progs/bind4_prog.c +++ b/tools/testing/selftests/bpf/progs/bind4_prog.c @@ -29,18 +29,48 @@ static __inline int bind_to_device(struct bpf_sock_addr *ctx) char veth2[IFNAMSIZ] = "test_sock_addr2"; char missing[IFNAMSIZ] = "nonexistent_dev"; char del_bind[IFNAMSIZ] = ""; + int veth1_idx, veth2_idx; if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, - &veth1, sizeof(veth1))) + &veth1, sizeof(veth1))) + return 1; + if (bpf_getsockopt(ctx, SOL_SOCKET, SO_BINDTOIFINDEX, + &veth1_idx, sizeof(veth1_idx)) || !veth1_idx) return 1; if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, - &veth2, sizeof(veth2))) + &veth2, sizeof(veth2))) + return 1; + if (bpf_getsockopt(ctx, SOL_SOCKET, SO_BINDTOIFINDEX, + &veth2_idx, sizeof(veth2_idx)) || !veth2_idx || + veth1_idx == veth2_idx) return 1; if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, - &missing, sizeof(missing)) != -ENODEV) + &missing, sizeof(missing)) != -ENODEV) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTOIFINDEX, + &veth1_idx, sizeof(veth1_idx))) return 1; if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, - &del_bind, sizeof(del_bind))) + &del_bind, sizeof(del_bind))) + return 1; + + return 0; +} + +static __inline int misc_opts(struct bpf_sock_addr *ctx, int opt) +{ + int old, tmp, new = 0xeb9f; + + /* Socket in test case has guarantee that old never equals to new. */ + if (bpf_getsockopt(ctx, SOL_SOCKET, opt, &old, sizeof(old)) || + old == new) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, opt, &new, sizeof(new))) + return 1; + if (bpf_getsockopt(ctx, SOL_SOCKET, opt, &tmp, sizeof(tmp)) || + tmp != new) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, opt, &old, sizeof(old))) return 1; return 0; @@ -93,6 +123,10 @@ int bind_v4_prog(struct bpf_sock_addr *ctx) if (bind_to_device(ctx)) return 0; + /* Test for misc socket options. */ + if (misc_opts(ctx, SO_MARK) || misc_opts(ctx, SO_PRIORITY)) + return 0; + ctx->user_ip4 = bpf_htonl(SERV4_REWRITE_IP); ctx->user_port = bpf_htons(SERV4_REWRITE_PORT); diff --git a/tools/testing/selftests/bpf/progs/bind6_prog.c b/tools/testing/selftests/bpf/progs/bind6_prog.c index 4358e44dcf47..4c0d348034b9 100644 --- a/tools/testing/selftests/bpf/progs/bind6_prog.c +++ b/tools/testing/selftests/bpf/progs/bind6_prog.c @@ -35,18 +35,48 @@ static __inline int bind_to_device(struct bpf_sock_addr *ctx) char veth2[IFNAMSIZ] = "test_sock_addr2"; char missing[IFNAMSIZ] = "nonexistent_dev"; char del_bind[IFNAMSIZ] = ""; + int veth1_idx, veth2_idx; if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, - &veth1, sizeof(veth1))) + &veth1, sizeof(veth1))) + return 1; + if (bpf_getsockopt(ctx, SOL_SOCKET, SO_BINDTOIFINDEX, + &veth1_idx, sizeof(veth1_idx)) || !veth1_idx) return 1; if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, - &veth2, sizeof(veth2))) + &veth2, sizeof(veth2))) + return 1; + if (bpf_getsockopt(ctx, SOL_SOCKET, SO_BINDTOIFINDEX, + &veth2_idx, sizeof(veth2_idx)) || !veth2_idx || + veth1_idx == veth2_idx) return 1; if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, - &missing, sizeof(missing)) != -ENODEV) + &missing, sizeof(missing)) != -ENODEV) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTOIFINDEX, + &veth1_idx, sizeof(veth1_idx))) return 1; if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, - &del_bind, sizeof(del_bind))) + &del_bind, sizeof(del_bind))) + return 1; + + return 0; +} + +static __inline int misc_opts(struct bpf_sock_addr *ctx, int opt) +{ + int old, tmp, new = 0xeb9f; + + /* Socket in test case has guarantee that old never equals to new. */ + if (bpf_getsockopt(ctx, SOL_SOCKET, opt, &old, sizeof(old)) || + old == new) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, opt, &new, sizeof(new))) + return 1; + if (bpf_getsockopt(ctx, SOL_SOCKET, opt, &tmp, sizeof(tmp)) || + tmp != new) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, opt, &old, sizeof(old))) return 1; return 0; @@ -107,6 +137,10 @@ int bind_v6_prog(struct bpf_sock_addr *ctx) if (bind_to_device(ctx)) return 0; + /* Test for misc socket options. */ + if (misc_opts(ctx, SO_MARK) || misc_opts(ctx, SO_PRIORITY)) + return 0; + ctx->user_ip6[0] = bpf_htonl(SERV6_REWRITE_IP_0); ctx->user_ip6[1] = bpf_htonl(SERV6_REWRITE_IP_1); ctx->user_ip6[2] = bpf_htonl(SERV6_REWRITE_IP_2); diff --git a/tools/testing/selftests/bpf/progs/test_core_read_macros.c b/tools/testing/selftests/bpf/progs/test_core_read_macros.c new file mode 100644 index 000000000000..fd54caa17319 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_core_read_macros.c @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2020 Facebook + +#include "vmlinux.h" +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_core_read.h> + +char _license[] SEC("license") = "GPL"; + +/* shuffled layout for relocatable (CO-RE) reads */ +struct callback_head___shuffled { + void (*func)(struct callback_head___shuffled *head); + struct callback_head___shuffled *next; +}; + +struct callback_head k_probe_in = {}; +struct callback_head___shuffled k_core_in = {}; + +struct callback_head *u_probe_in = 0; +struct callback_head___shuffled *u_core_in = 0; + +long k_probe_out = 0; +long u_probe_out = 0; + +long k_core_out = 0; +long u_core_out = 0; + +int my_pid = 0; + +SEC("raw_tracepoint/sys_enter") +int handler(void *ctx) +{ + int pid = bpf_get_current_pid_tgid() >> 32; + + if (my_pid != pid) + return 0; + + /* next pointers for kernel address space have to be initialized from + * BPF side, user-space mmaped addresses are stil user-space addresses + */ + k_probe_in.next = &k_probe_in; + __builtin_preserve_access_index(({k_core_in.next = &k_core_in;})); + + k_probe_out = (long)BPF_PROBE_READ(&k_probe_in, next, next, func); + k_core_out = (long)BPF_CORE_READ(&k_core_in, next, next, func); + u_probe_out = (long)BPF_PROBE_READ_USER(u_probe_in, next, next, func); + u_core_out = (long)BPF_CORE_READ_USER(u_core_in, next, next, func); + + return 0; +} diff --git a/tools/testing/selftests/bpf/progs/test_ksyms_module.c b/tools/testing/selftests/bpf/progs/test_ksyms_module.c new file mode 100644 index 000000000000..d6a0b3086b90 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_ksyms_module.c @@ -0,0 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2021 Facebook */ + +#include "vmlinux.h" + +#include <bpf/bpf_helpers.h> + +extern const int bpf_testmod_ksym_percpu __ksym; + +int out_mod_ksym_global = 0; +bool triggered = false; + +SEC("raw_tp/sys_enter") +int handler(const void *ctx) +{ + int *val; + __u32 cpu; + + val = (int *)bpf_this_cpu_ptr(&bpf_testmod_ksym_percpu); + out_mod_ksym_global = *val; + triggered = true; + + return 0; +} + +char LICENSE[] SEC("license") = "GPL"; |