These macros are a temporary stop-gap until bpf exceptions support unwinding acquired entities. Basically these macros act as if they take a callback which only get executed if the assertion fails.
Signed-off-by: Daniel Xu <[email protected]> --- .../testing/selftests/bpf/bpf_experimental.h | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/tools/testing/selftests/bpf/bpf_experimental.h b/tools/testing/selftests/bpf/bpf_experimental.h index 1386baf9ae4a..d63f415bef26 100644 --- a/tools/testing/selftests/bpf/bpf_experimental.h +++ b/tools/testing/selftests/bpf/bpf_experimental.h @@ -263,6 +263,17 @@ extern void bpf_throw(u64 cookie) __ksym; */ #define bpf_assert(cond) if (!(cond)) bpf_throw(0); +/* Description + * Assert that a conditional expression is true. If false, runs code in the + * body before throwing. + * Returns + * Void. + * Throws + * An exception with the value zero when the assertion fails. + */ +#define bpf_assert_if(cond) \ + for (int ___i = 0, ___j = !!(cond); !(___j) && !___i; bpf_throw(0), ___i++) + /* Description * Assert that a conditional expression is true. * Returns @@ -272,6 +283,17 @@ extern void bpf_throw(u64 cookie) __ksym; */ #define bpf_assert_with(cond, value) if (!(cond)) bpf_throw(value); +/* Description + * Assert that a conditional expression is true. If false, runs code in the + * body before throwing. + * Returns + * Void. + * Throws + * An exception with the given value when the assertion fails. + */ +#define bpf_assert_with_if(cond, value) \ + for (int ___i = 0, ___j = !!(cond); !(___j) && !___i; bpf_throw(value), ___i++) + /* Description * Assert that LHS is equal to RHS. This statement updates the known value * of LHS during verification. Note that RHS must be a constant value, and -- 2.42.1
