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| author |   Florent Revest <revest@chromium.org> | 2020-12-04 12:36:05 +0100 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2020-12-04 22:32:40 +0100 |
| commit | 4f19cab76136e800a3f04d8c9aa4d8e770e3d3d8 (patch) | |
| tree | 3b5e5f07da31f2a2a81b858765e00c8ff0265daa /scripts/bpf_helpers_doc.py | |
| parent | net: Remove the err argument from sock_from_file (diff) | |
| download | linux-dev-4f19cab76136e800a3f04d8c9aa4d8e770e3d3d8.tar.xz linux-dev-4f19cab76136e800a3f04d8c9aa4d8e770e3d3d8.zip | |
bpf: Add a bpf_sock_from_file helper
While eBPF programs can check whether a file is a socket by file->f_op
== &socket_file_ops, they cannot convert the void private_data pointer
to a struct socket BTF pointer. In order to do this a new helper
wrapping sock_from_file is added.
This is useful to tracing programs but also other program types
inheriting this set of helpers such as iterators or LSM programs.
Signed-off-by: Florent Revest <revest@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: KP Singh <kpsingh@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20201204113609.1850150-2-revest@google.com
Diffstat (limited to 'scripts/bpf_helpers_doc.py')
| -rwxr-xr-x | scripts/bpf_helpers_doc.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/scripts/bpf_helpers_doc.py b/scripts/bpf_helpers_doc.py index 8b829748d488..867ada23281c 100755 --- a/scripts/bpf_helpers_doc.py +++ b/scripts/bpf_helpers_doc.py @@ -437,6 +437,8 @@ class PrinterHelpers(Printer): 'struct path', 'struct btf_ptr', 'struct inode', + 'struct socket', + 'struct file', ] known_types = { '...', @@ -482,6 +484,8 @@ class PrinterHelpers(Printer): 'struct path', 'struct btf_ptr', 'struct inode', + 'struct socket', + 'struct file', } mapped_types = { 'u8': '__u8', |