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authorSong Liu <songliubraving@fb.com>2018-10-19 09:57:57 -0700
committerAlexei Starovoitov <ast@kernel.org>2018-10-19 13:49:34 -0700
commitb39b5f411dcfce28ff954e5d6acb2c11be3cb0ec (patch)
tree4f724a3269469e76ed30c674bf52ddef3fb93db0 /tools
parent2929ad29a3015120ab64c86f362fc2a590ceb69c (diff)
bpf: add cg_skb_is_valid_access for BPF_PROG_TYPE_CGROUP_SKB
BPF programs of BPF_PROG_TYPE_CGROUP_SKB need to access headers in the skb. This patch enables direct access of skb for these programs. Two helper functions bpf_compute_and_save_data_end() and bpf_restore_data_end() are introduced. There are used in __cgroup_bpf_run_filter_skb(), to compute proper data_end for the BPF program, and restore original data afterwards. Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions

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