diff options
| author | Joe Stringer <joe@cilium.io> | 2021-03-02 09:19:38 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-03-04 18:39:44 -0800 |
| commit | 2a3fdca4e3bc7a01316277ba26f4090c4b19bf7c (patch) | |
| tree | 763cf207af944ff797804fedbb86dfbd4c19371e /include/uapi | |
| parent | 32e76b187a90de5809d68c2ef3e3964176dacaf0 (diff) | |
bpf: Document BPF_PROG_TEST_RUN syscall command
Based on a brief read of the corresponding source code.
Signed-off-by: Joe Stringer <joe@cilium.io>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210302171947.2268128-7-joe@cilium.io
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/bpf.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index a8f2964ec885..a6cd6650e23d 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -306,14 +306,22 @@ union bpf_iter_link_info { * * BPF_PROG_TEST_RUN * Description - * Run an eBPF program a number of times against a provided - * program context and return the modified program context and - * duration of the test run. + * Run the eBPF program associated with the *prog_fd* a *repeat* + * number of times against a provided program context *ctx_in* and + * data *data_in*, and return the modified program context + * *ctx_out*, *data_out* (for example, packet data), result of the + * execution *retval*, and *duration* of the test run. * * Return * Returns zero on success. On error, -1 is returned and *errno* * is set appropriately. * + * **ENOSPC** + * Either *data_size_out* or *ctx_size_out* is too small. + * **ENOTSUPP** + * This command is not supported by the program type of + * the program referred to by *prog_fd*. + * * BPF_PROG_GET_NEXT_ID * Description * Fetch the next eBPF program currently loaded into the kernel. |