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authorAndrii Nakryiko <andrii@kernel.org>2024-01-23 18:21:02 -0800
committerAlexei Starovoitov <ast@kernel.org>2024-01-24 16:21:01 -0800
commit9ea7c4bf17e39d463eb4782f948f401d9764b1b3 (patch)
tree9cf0cc9d7b7ceb2ec8b7b2fe37baa0b5ce0bd30c /tools
parenta177fc2bf6fd83704854feaf7aae926b1df4f0b9 (diff)
bpf: Add BPF token support to BPF_BTF_LOAD command
Accept BPF token FD in BPF_BTF_LOAD command to allow BTF data loading through delegated BPF token. BPF_F_TOKEN_FD flag has to be specified when passing BPF token FD. Given BPF_BTF_LOAD command didn't have flags field before, we also add btf_flags field. BTF loading is a pretty straightforward operation, so as long as BPF token is created with allow_cmds granting BPF_BTF_LOAD command, kernel proceeds to parsing BTF data and creating BTF object. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20240124022127.2379740-6-andrii@kernel.org
Diffstat (limited to 'tools')
-rw-r--r--tools/include/uapi/linux/bpf.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index c78cab8b462d..cb2c888e3bb4 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -1632,6 +1632,11 @@ union bpf_attr {
* truncated), or smaller (if log buffer wasn't filled completely).
*/
__u32 btf_log_true_size;
+ __u32 btf_flags;
+ /* BPF token FD to use with BPF_BTF_LOAD operation.
+ * If provided, btf_flags should have BPF_F_TOKEN_FD flag set.
+ */
+ __s32 btf_token_fd;
};
struct {