xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

selftests/bpf: Add test for BPF trampoline

Browse Source 
Add sanity test for BPF trampoline that checks kernel functions
with up to 6 arguments of different sizes.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20191114185720.1641606-10-ast@kernel.org
This commit is contained in:
Alexei Starovoitov
2019-11-14 10:57:09 -08:00
committed by Daniel Borkmann
parent faeb2dce08
commit 11d1e2eeff
3 changed files with 167 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
tools/lib/bpf/bpf_helpers.h
View File

@@ -44,4 +44,17 @@ enum libbpf_pin_type {
LIBBPF_PIN_BY_NAME,
};
/* The following types should be used by BPF_PROG_TYPE_TRACING program to
* access kernel function arguments. BPF trampoline and raw tracepoints
* typecast arguments to 'unsigned long long'.
*/
typedef int __attribute__((aligned(8))) ks32;
typedef char __attribute__((aligned(8))) ks8;
typedef short __attribute__((aligned(8))) ks16;
typedef long long __attribute__((aligned(8))) ks64;
typedef unsigned int __attribute__((aligned(8))) ku32;
typedef unsigned char __attribute__((aligned(8))) ku8;
typedef unsigned short __attribute__((aligned(8))) ku16;
typedef unsigned long long __attribute__((aligned(8))) ku64;
#endif