diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/bpf_misc.h')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/bpf_misc.h | 85 |
1 files changed, 79 insertions, 6 deletions
diff --git a/tools/testing/selftests/bpf/progs/bpf_misc.h b/tools/testing/selftests/bpf/progs/bpf_misc.h index 2fd59970c43a..f45f4352feeb 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 +130,17 @@ #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 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)) @@ -80,7 +149,7 @@ #define __imm(name) [name]"i"(name) #define __imm_const(name, expr) [name]"i"(expr) #define __imm_addr(name) [name]"i"(&name) -#define __imm_ptr(name) [name]"p"(&name) +#define __imm_ptr(name) [name]"r"(&name) #define __imm_insn(name, expr) [name]"i"(*(long *)&(expr)) /* Magic constants used with __retval() */ @@ -135,4 +204,8 @@ /* 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 + #endif |