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authorChenbo Feng <fengc@google.com>2017-04-14 18:25:26 -0700
committerDavid S. Miller <davem@davemloft.net>2017-04-17 15:22:00 -0400
commit9fd0f315631f3d3677cbd44966749cb63e55058a (patch)
tree3afa94e99a832a2242bfda1bda997f0cd743abc7 /net/core
parentf3c9d40ee12926f330a1dfebce0bebadd1406ba6 (diff)
downloadop-kernel-dev-9fd0f315631f3d3677cbd44966749cb63e55058a.zip
op-kernel-dev-9fd0f315631f3d3677cbd44966749cb63e55058a.tar.gz
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>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/filter.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/net/core/filter.c b/net/core/filter.c
index ce2a19d..19be954 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 *
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