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Message-ID: <20190201070356.4148189-1-kafai@fb.com> Date: Thu, 31 Jan 2019 23:03:56 -0800 From: Martin KaFai Lau <kafai@...com> To: <netdev@...r.kernel.org> CC: Alexei Starovoitov <ast@...com>, Daniel Borkmann <daniel@...earbox.net>, <kernel-team@...com>, Lawrence Brakmo <brakmo@...com> Subject: [PATCH bpf-next 0/6] Add __sk_buff->sk, bpf_tcp_sock, BPF_FUNC_tcp_sock and BPF_FUNC_sk_fullsock This series adds __sk_buff->sk, "struct bpf_tcp_sock", BPF_FUNC_sk_fullsock and BPF_FUNC_tcp_sock. Together, they provide a common way to expose the members of "struct tcp_sock" and "struct bpf_sock" for the bpf_prog to access. The patch series first adds a bpf_sock pointer to __sk_buff and a new helper BPF_FUNC_sk_fullsock. It then adds BPF_FUNC_tcp_sock to get a bpf_tcp_sock pointer from a bpf_sock pointer. The current use case is to allow a cg_skb_bpf_prog to provide per cgroup traffic policing/shaping. Please see individual patch for details. Martin KaFai Lau (6): bpf: Add a bpf_sock pointer to __sk_buff and a bpf_sk_fullsock helper bpf: Refactor sock_ops_convert_ctx_access bpf: Add struct bpf_tcp_sock and BPF_FUNC_tcp_sock bpf: Sync bpf.h to tools/ bpf: Add skb->sk, bpf_sk_fullsock and bpf_tcp_sock tests to test_verifer bpf: Add test_sock_fields for skb->sk and bpf_tcp_sock include/linux/bpf.h | 42 ++ include/uapi/linux/bpf.h | 61 ++- kernel/bpf/verifier.c | 156 +++++-- net/core/filter.c | 407 +++++++++++------- tools/include/uapi/linux/bpf.h | 61 ++- tools/testing/selftests/bpf/Makefile | 5 +- tools/testing/selftests/bpf/bpf_helpers.h | 4 + .../testing/selftests/bpf/test_sock_fields.c | 314 ++++++++++++++ .../selftests/bpf/test_sock_fields_kern.c | 145 +++++++ .../selftests/bpf/verifier/ref_tracking.c | 4 +- tools/testing/selftests/bpf/verifier/sock.c | 238 ++++++++++ tools/testing/selftests/bpf/verifier/unpriv.c | 2 +- 12 files changed, 1233 insertions(+), 206 deletions(-) create mode 100644 tools/testing/selftests/bpf/test_sock_fields.c create mode 100644 tools/testing/selftests/bpf/test_sock_fields_kern.c create mode 100644 tools/testing/selftests/bpf/verifier/sock.c -- 2.17.1
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