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| author |   Andrii Nakryiko <andrii@kernel.org> | 2024-01-29 16:06:46 -0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2024-01-30 09:41:50 -0800 |
| commit | 8f2b44cd9d69ec36c9ce9623993978babb575ee8 (patch) | |
| tree | 45c7502fc70ead45db93a3891838d7f2c364d6ac /tools/lib/bpf/bpf_helpers.h | |
| parent | bpf: add __arg_trusted global func arg tag (diff) | |
| download | wireguard-linux-8f2b44cd9d69ec36c9ce9623993978babb575ee8.tar.xz wireguard-linux-8f2b44cd9d69ec36c9ce9623993978babb575ee8.zip | |
bpf: add arg:nullable tag to be combined with trusted pointers
Add ability to mark arg:trusted arguments with optional arg:nullable
tag to mark it as PTR_TO_BTF_ID_OR_NULL variant, which will allow
callers to pass NULL, and subsequently will force global subprog's code
to do NULL check. This allows to have "optional" PTR_TO_BTF_ID values
passed into global subprogs.
For now arg:nullable cannot be combined with anything else.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240130000648.2144827-3-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/lib/bpf/bpf_helpers.h')
0 files changed, 0 insertions, 0 deletions