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| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2022-01-21 11:09:54 +0100 |
|---|---|---|
| committer | Quentin Monnet <qmonnet+github@qoba.lt> | 2022-01-26 19:55:00 +0000 |
| commit | 02ada0f1ddd58964f515c60e58f0541bf7bb80ce (patch) | |
| tree | cbcedd5853d352cf611959f702a57f024c84abe5 | |
| parent | 16cc94df4c0669d2af13b93bc6483f7301520a89 (diff) | |
| download | bpftool-02ada0f1ddd58964f515c60e58f0541bf7bb80ce.tar.gz | |
bpf: introduce bpf_xdp_get_buff_len helper
Introduce bpf_xdp_get_buff_len helper in order to return the xdp buffer
total size (linear and paged area)
Acked-by: Toke Hoiland-Jorgensen <toke@redhat.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/aac9ac3504c84026cf66a3c71b7c5ae89bc991be.1642758637.git.lorenzo@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | include/uapi/linux/bpf.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 945649c..5a28772 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -5054,6 +5054,12 @@ union bpf_attr { * This helper is currently supported by cgroup programs only. * Return * 0 on success, or a negative error in case of failure. + * + * u64 bpf_xdp_get_buff_len(struct xdp_buff *xdp_md) + * Description + * Get the total size of a given xdp buff (linear and paged area) + * Return + * The total size of a given xdp buffer. */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -5244,6 +5250,7 @@ union bpf_attr { FN(get_func_arg_cnt), \ FN(get_retval), \ FN(set_retval), \ + FN(xdp_get_buff_len), \ /* */ /* integer value in 'imm' field of BPF_CALL instruction selects which helper |