From: David Ahern <dsahern@kernel.org> To: netdev@vger.kernel.org Cc: bpf@vger.kernel.org, davem@davemloft.net, kuba@kernel.org, brouer@redhat.com, toke@redhat.com, lorenzo@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, ast@kernel.org, kafai@fb.com, songliubraving@fb.com, yhs@fb.com, andriin@fb.com, dsahern@gmail.com, David Ahern <dsahern@kernel.org> Subject: [PATCH v3 bpf-next 0/5] bpf: Add support for XDP programs in DEVMAP entries Date: Thu, 28 May 2020 23:20:52 -0600 [thread overview] Message-ID: <20200529052057.69378-1-dsahern@kernel.org> (raw) Implementation of Daniel's proposal for allowing DEVMAP entries to be a device index, program fd pair. Programs are run after XDP_REDIRECT and have access to both Rx device and Tx device. v3 - renamed struct to bpf_devmap_val - used offsetofend to check for expected map size, modification of Toke's comment - check for explicit value sizes - adjusted switch statement in dev_map_run_prog per Andrii's comment - changed SEC shortcut to xdp_devmap - changed selftests to use skeleton and new map declaration v2 - moved dev_map_ext_val definition to uapi to formalize the API for devmap extensions; add bpf_ prefix to the prog_fd and prog_id entries - changed devmap code to handle struct in a way that it can support future extensions - fixed subject in libbpf patch v1 - fixed prog put on invalid program - Toke - changed write value from id to fd per Toke's comments about capabilities - add test cases David Ahern (5): devmap: Formalize map value as a named struct bpf: Add support to attach bpf program to a devmap entry xdp: Add xdp_txq_info to xdp_buff libbpf: Add SEC name for xdp programs attached to device map selftest: Add tests for XDP programs in devmap entries include/linux/bpf.h | 5 + include/net/xdp.h | 5 + include/uapi/linux/bpf.h | 12 ++ kernel/bpf/devmap.c | 121 +++++++++++++++--- net/core/dev.c | 18 +++ net/core/filter.c | 17 +++ tools/include/uapi/linux/bpf.h | 12 ++ tools/lib/bpf/libbpf.c | 2 + .../bpf/prog_tests/xdp_devmap_attach.c | 89 +++++++++++++ .../bpf/progs/test_xdp_devmap_helpers.c | 22 ++++ .../bpf/progs/test_xdp_with_devmap_helpers.c | 43 +++++++ 11 files changed, 328 insertions(+), 18 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c create mode 100644 tools/testing/selftests/bpf/progs/test_xdp_devmap_helpers.c create mode 100644 tools/testing/selftests/bpf/progs/test_xdp_with_devmap_helpers.c -- 2.21.1 (Apple Git-122.3)
next reply other threads:[~2020-05-29 5:21 UTC|newest] Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-05-29 5:20 David Ahern [this message] 2020-05-29 5:20 ` [PATCH v3 bpf-next 1/5] devmap: Formalize map value as a named struct David Ahern 2020-05-29 8:22 ` Jesper Dangaard Brouer 2020-05-29 15:36 ` David Ahern 2020-05-29 16:02 ` Jesper Dangaard Brouer 2020-05-29 5:20 ` [PATCH v3 bpf-next 2/5] bpf: Add support to attach bpf program to a devmap entry David Ahern 2020-05-29 5:20 ` [PATCH v3 bpf-next 3/5] xdp: Add xdp_txq_info to xdp_buff David Ahern 2020-05-29 5:20 ` [PATCH v3 bpf-next 4/5] libbpf: Add SEC name for xdp programs attached to device map David Ahern 2020-05-29 5:20 ` [PATCH v3 bpf-next 5/5] selftest: Add tests for XDP programs in devmap entries David Ahern 2020-05-29 16:45 ` Toke Høiland-Jørgensen 2020-05-29 16:48 ` David Ahern 2020-05-29 16:58 ` Toke Høiland-Jørgensen 2020-05-29 16:46 ` [PATCH v3 bpf-next 0/5] bpf: Add support for XDP programs in DEVMAP entries Toke Høiland-Jørgensen
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