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| author | Zvi Effron <zeffron@riotgames.com> | 2021-07-08 01:16:54 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-07-08 05:51:12 +0300 |
| commit | 7445cf31d2e25e3f8ad7b1c5342e624c09ab23a2 (patch) | |
| tree | a7babfa3dec035e81533d4e66266bfc75f3013ea /include/net/xdp.h | |
| parent | 5e437416ff66981d8154687cfdf7de50b1d82bfc (diff) | |
| download | linux-7445cf31d2e25e3f8ad7b1c5342e624c09ab23a2.tar.xz | |
bpf: Add function for XDP meta data length check
This commit prepares to use the XDP meta data length check in multiple
places by making it into a static inline function instead of a literal.
Co-developed-by: Cody Haas <chaas@riotgames.com>
Co-developed-by: Lisa Watanabe <lwatanabe@riotgames.com>
Signed-off-by: Cody Haas <chaas@riotgames.com>
Signed-off-by: Lisa Watanabe <lwatanabe@riotgames.com>
Signed-off-by: Zvi Effron <zeffron@riotgames.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210707221657.3985075-2-zeffron@riotgames.com
Diffstat (limited to 'include/net/xdp.h')
| -rw-r--r-- | include/net/xdp.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/net/xdp.h b/include/net/xdp.h index 5533f0ab2afc..ad5b02dcb6f4 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -276,6 +276,11 @@ xdp_data_meta_unsupported(const struct xdp_buff *xdp) return unlikely(xdp->data_meta > xdp->data); } +static inline bool xdp_metalen_invalid(unsigned long metalen) +{ + return (metalen & (sizeof(__u32) - 1)) || (metalen > 32); +} + struct xdp_attachment_info { struct bpf_prog *prog; u32 flags; |