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-rw-r--r--tools/testing/selftests/bpf/progs/bpf_misc.h106
1 files changed, 101 insertions, 5 deletions
diff --git a/tools/testing/selftests/bpf/progs/bpf_misc.h b/tools/testing/selftests/bpf/progs/bpf_misc.h
index fb2f5513e29e..6e208e24ba3b 100644
--- a/tools/testing/selftests/bpf/progs/bpf_misc.h
+++ b/tools/testing/selftests/bpf/progs/bpf_misc.h
@@ -2,14 +2,21 @@
#ifndef __BPF_MISC_H__
#define __BPF_MISC_H__
+#define XSTR(s) STR(s)
+#define STR(s) #s
+
+/* Expand a macro and then stringize the expansion */
+#define QUOTE(str) #str
+#define EXPAND_QUOTE(str) QUOTE(str)
+
/* This set of attributes controls behavior of the
* test_loader.c:test_loader__run_subtests().
*
* The test_loader sequentially loads each program in a skeleton.
* Programs could be loaded in privileged and unprivileged modes.
- * - __success, __failure, __msg imply privileged mode;
- * - __success_unpriv, __failure_unpriv, __msg_unpriv imply
- * unprivileged mode.
+ * - __success, __failure, __msg, __regex imply privileged mode;
+ * - __success_unpriv, __failure_unpriv, __msg_unpriv, __regex_unpriv
+ * imply unprivileged mode.
* If combination of privileged and unprivileged attributes is present
* both modes are used. If none are present privileged mode is implied.
*
@@ -22,8 +29,50 @@
*
* __msg Message expected to be found in the verifier log.
* Multiple __msg attributes could be specified.
+ * To match a regular expression use "{{" "}}" brackets,
+ * e.g. "foo{{[0-9]+}}" matches strings like "foo007".
+ * Extended POSIX regular expression syntax is allowed
+ * inside the brackets.
* __msg_unpriv Same as __msg but for unprivileged mode.
*
+ * __xlated Expect a line in a disassembly log after verifier applies rewrites.
+ * Multiple __xlated attributes could be specified.
+ * Regular expressions could be specified same way as in __msg.
+ * __xlated_unpriv Same as __xlated but for unprivileged mode.
+ *
+ * __jited Match a line in a disassembly of the jited BPF program.
+ * Has to be used after __arch_* macro.
+ * For example:
+ *
+ * __arch_x86_64
+ * __jited(" endbr64")
+ * __jited(" nopl (%rax,%rax)")
+ * __jited(" xorq %rax, %rax")
+ * ...
+ * __naked void some_test(void)
+ * {
+ * asm volatile (... ::: __clobber_all);
+ * }
+ *
+ * Regular expressions could be included in patterns same way
+ * as in __msg.
+ *
+ * By default assume that each pattern has to be matched on the
+ * next consecutive line of disassembly, e.g.:
+ *
+ * __jited(" endbr64") # matched on line N
+ * __jited(" nopl (%rax,%rax)") # matched on line N+1
+ *
+ * If match occurs on a wrong line an error is reported.
+ * To override this behaviour use literal "...", e.g.:
+ *
+ * __jited(" endbr64") # matched on line N
+ * __jited("...") # not matched
+ * __jited(" nopl (%rax,%rax)") # matched on any line >= N
+ *
+ * __jited_unpriv Same as __jited but for unprivileged mode.
+ *
+ *
* __success Expect program load success in privileged mode.
* __success_unpriv Expect program load success in unprivileged mode.
*
@@ -57,12 +106,21 @@
* __auxiliary Annotated program is not a separate test, but used as auxiliary
* for some other test cases and should always be loaded.
* __auxiliary_unpriv Same, but load program in unprivileged mode.
+ *
+ * __arch_* Specify on which architecture the test case should be tested.
+ * Several __arch_* annotations could be specified at once.
+ * When test case is not run on current arch it is marked as skipped.
+ * __caps_unpriv Specify the capabilities that should be set when running the test.
*/
-#define __msg(msg) __attribute__((btf_decl_tag("comment:test_expect_msg=" msg)))
+#define __msg(msg) __attribute__((btf_decl_tag("comment:test_expect_msg=" XSTR(__COUNTER__) "=" msg)))
+#define __xlated(msg) __attribute__((btf_decl_tag("comment:test_expect_xlated=" XSTR(__COUNTER__) "=" msg)))
+#define __jited(msg) __attribute__((btf_decl_tag("comment:test_jited=" XSTR(__COUNTER__) "=" msg)))
#define __failure __attribute__((btf_decl_tag("comment:test_expect_failure")))
#define __success __attribute__((btf_decl_tag("comment:test_expect_success")))
#define __description(desc) __attribute__((btf_decl_tag("comment:test_description=" desc)))
-#define __msg_unpriv(msg) __attribute__((btf_decl_tag("comment:test_expect_msg_unpriv=" msg)))
+#define __msg_unpriv(msg) __attribute__((btf_decl_tag("comment:test_expect_msg_unpriv=" XSTR(__COUNTER__) "=" msg)))
+#define __xlated_unpriv(msg) __attribute__((btf_decl_tag("comment:test_expect_xlated_unpriv=" XSTR(__COUNTER__) "=" msg)))
+#define __jited_unpriv(msg) __attribute__((btf_decl_tag("comment:test_jited=" XSTR(__COUNTER__) "=" msg)))
#define __failure_unpriv __attribute__((btf_decl_tag("comment:test_expect_failure_unpriv")))
#define __success_unpriv __attribute__((btf_decl_tag("comment:test_expect_success_unpriv")))
#define __log_level(lvl) __attribute__((btf_decl_tag("comment:test_log_level="#lvl)))
@@ -72,6 +130,19 @@
#define __auxiliary __attribute__((btf_decl_tag("comment:test_auxiliary")))
#define __auxiliary_unpriv __attribute__((btf_decl_tag("comment:test_auxiliary_unpriv")))
#define __btf_path(path) __attribute__((btf_decl_tag("comment:test_btf_path=" path)))
+#define __arch(arch) __attribute__((btf_decl_tag("comment:test_arch=" arch)))
+#define __arch_x86_64 __arch("X86_64")
+#define __arch_arm64 __arch("ARM64")
+#define __arch_riscv64 __arch("RISCV64")
+#define __caps_unpriv(caps) __attribute__((btf_decl_tag("comment:test_caps_unpriv=" EXPAND_QUOTE(caps))))
+#define __load_if_JITed() __attribute__((btf_decl_tag("comment:load_mode=jited")))
+#define __load_if_no_JITed() __attribute__((btf_decl_tag("comment:load_mode=no_jited")))
+
+/* Define common capabilities tested using __caps_unpriv */
+#define CAP_NET_ADMIN 12
+#define CAP_SYS_ADMIN 21
+#define CAP_PERFMON 38
+#define CAP_BPF 39
/* Convenience macro for use with 'asm volatile' blocks */
#define __naked __attribute__((naked))
@@ -103,6 +174,9 @@
#elif defined(__TARGET_ARCH_riscv)
#define SYSCALL_WRAPPER 1
#define SYS_PREFIX "__riscv_"
+#elif defined(__TARGET_ARCH_powerpc)
+#define SYSCALL_WRAPPER 1
+#define SYS_PREFIX ""
#else
#define SYSCALL_WRAPPER 0
#define SYS_PREFIX "__se_"
@@ -135,4 +209,26 @@
/* make it look to compiler like value is read and written */
#define __sink(expr) asm volatile("" : "+g"(expr))
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+#endif
+
+#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \
+ (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64) || \
+ defined(__TARGET_ARCH_arm) || defined(__TARGET_ARCH_s390) || \
+ defined(__TARGET_ARCH_loongarch)) && \
+ __clang_major__ >= 18
+#define CAN_USE_GOTOL
+#endif
+
+#if __clang_major__ >= 18
+#define CAN_USE_BPF_ST
+#endif
+
+#if __clang_major__ >= 18 && defined(ENABLE_ATOMICS_TESTS) && \
+ (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \
+ (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64))
+#define CAN_USE_LOAD_ACQ_STORE_REL
+#endif
+
#endif
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