diff options
| author | Chenbo Feng <fengc@google.com> | 2017-04-14 18:25:26 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-04-17 15:22:00 -0400 |
| commit | 9fd0f315631f3d3677cbd44966749cb63e55058a (patch) | |
| tree | 3afa94e99a832a2242bfda1bda997f0cd743abc7 | |
| parent | f3c9d40ee12926f330a1dfebce0bebadd1406ba6 (diff) | |
Add uid and cookie bpf helper to cg_skb_func_proto
BPF helper functions get_socket_cookie and get_socket_uid can be
used for network traffic classifications, among others. Expose
them also to programs of type BPF_PROG_TYPE_CGROUP_SKB. As of
commit 8f917bba0042 ("bpf: pass sk to helper functions") the
required skb->sk function is available at both cgroup bpf ingress
and egress hooks. With these two new helper, cg_skb_func_proto is
effectively the same as sk_filter_func_proto.
Change since V1:
Instead of add the helper to cg_skb_func_proto, redirect the
cg_skb_func_proto to sk_filter_func_proto since all helper function
in sk_filter_func_proto are applicable to cg_skb_func_proto now.
Signed-off-by: Chenbo Feng <fengc@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/filter.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index ce2a19da8aa4..19be954f8ce7 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2766,12 +2766,7 @@ xdp_func_proto(enum bpf_func_id func_id) static const struct bpf_func_proto * cg_skb_func_proto(enum bpf_func_id func_id) { - switch (func_id) { - case BPF_FUNC_skb_load_bytes: - return &bpf_skb_load_bytes_proto; - default: - return bpf_base_func_proto(func_id); - } + return sk_filter_func_proto(func_id); } static const struct bpf_func_proto * |