This series addresses most of the feedback [0] that was to be followed up from the last series, that is, UAPI helper comment improvements and getting rid of the ifindex obj file hacks in the selftest by using a BPF map instead. The __sk_buff data/data_end pointer work, I'm planning to do in a later round as well as the mem*() BPF improvements we have in Cilium for libbpf. Next, the series adds two features, i) a helper called redirect_peer() to improve latency on netns switch, and ii) to allow map in map with dynamic inner array map sizes. Selftests for each are added as well. For details, please check individual patches, thanks! [0] https://lore.kernel.org/bpf/cover.1601477936.git.daniel@xxxxxxxxxxxxx/ v5 -> v6: - Going with Andrii's suggestion to make the misconfigured verifier test more robust, and only probe on -EOPNOTSUPP (Andrii) v4 -> v5: - Replace cnt == -EOPNOTSUPP check with cnt < 0; I've used < 0 here as I think it's useful to keep the existing cnt == 0 || cnt >= ARRAY_SIZE(insn_buf) for error detection (Andrii) v3 -> v4: - Rename new array map flag to BPF_F_INNER_MAP (Alexei) v2 -> v3: - Remove tab that slipped into uapi helper desc (Jakub) - Rework map in map for array to error from map_gen_lookup (Andrii) v1 -> v2: - Fixed selftest comment wrt inner1/inner2 value (Yonghong) Daniel Borkmann (6): bpf: improve bpf_redirect_neigh helper description bpf: add redirect_peer helper bpf: allow for map-in-map with dynamic inner array map entries bpf, selftests: add test for different array inner map size bpf, selftests: make redirect_neigh test more extensible bpf, selftests: add redirect_peer selftest drivers/net/veth.c | 9 + include/linux/bpf.h | 2 +- include/linux/netdevice.h | 4 + include/uapi/linux/bpf.h | 30 ++- kernel/bpf/arraymap.c | 17 +- kernel/bpf/hashtab.c | 6 +- kernel/bpf/verifier.c | 6 +- net/core/dev.c | 15 +- net/core/filter.c | 54 ++++- net/xdp/xskmap.c | 2 +- tools/include/uapi/linux/bpf.h | 30 ++- .../selftests/bpf/prog_tests/btf_map_in_map.c | 39 +++- .../selftests/bpf/progs/test_btf_map_in_map.c | 43 ++++ .../selftests/bpf/progs/test_tc_neigh.c | 40 ++-- .../selftests/bpf/progs/test_tc_peer.c | 45 ++++ tools/testing/selftests/bpf/test_tc_neigh.sh | 168 --------------- .../testing/selftests/bpf/test_tc_redirect.sh | 204 ++++++++++++++++++ 17 files changed, 489 insertions(+), 225 deletions(-) create mode 100644 tools/testing/selftests/bpf/progs/test_tc_peer.c delete mode 100755 tools/testing/selftests/bpf/test_tc_neigh.sh create mode 100755 tools/testing/selftests/bpf/test_tc_redirect.sh -- 2.17.1
