From patchwork Wed May 15 21:12:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 13665550 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E44D82F877; Wed, 15 May 2024 21:13:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715807587; cv=none; b=fBUTOFyH/kMPmmZOOx2FtQCuPuRb5QJlraLKgT25KkFI1OEcfaaOqBK4m8X7+2kDFxq18yyRzK8/Pm3Yokl85EDbCg+A8S1tz6Idnqso9znmKfcNYbX3unMeELTTO8munNQ2sKo0IoDUphoQCtXgJgcLyKoGlPZZzx31WNaed2E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715807587; c=relaxed/simple; bh=+5pn0fNQseGmkdeOb2fvncVa1+iPrrMB4OLD3WVKe2g=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=XcBjhrZ8XcTn/GlQwFNyr2sCp5H1e80QiqW2paJf2rD14VXITvhETjkHb/PUniN2p645yZ5x9HbfzJwmNyQQWt3J0c8AJ/bW8iJ61mee4IPJauaaqGqERBJsV3xcjG2YCcXeHYII6UN706yMr1y+k+pZTQyWrDU6hqjkxAYbWu8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PG8IImBV; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PG8IImBV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E6D6BC116B1; Wed, 15 May 2024 21:13:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1715807586; bh=+5pn0fNQseGmkdeOb2fvncVa1+iPrrMB4OLD3WVKe2g=; h=From:To:Cc:Subject:Date:From; b=PG8IImBVtUSOSbWKWpGNUmh2l24TolXbnI9svpFYKV74VzsmrGk1mS+ZtEXdSr11O dtf7PsGac1s0T1EkUbFt67OTAqSnWAfS3RoCDHfs6I6aQvDN6LwQkfIeZ9YCdji1YD Y+GNUBlxlh01j9Dmzhi9RzWsB4U3VKmt8NtYnd7PeD9az+jh2sfhh9siGfJxbwav3B YAvs5uVfBNJyG68Q73IxpLjcq843Fu2sBTV9+6rfQsWx2iOeNVW7W+WzoBDsR4Td1B umKf1w9Or48EN7Plx1vJ7Ch7s1itpXTe1x+eEeXhX348xVQltSabPUzPX/hqhoe+U+ v9s8EAEilvsrg== From: Lorenzo Bianconi To: bpf@vger.kernel.org Cc: pablo@netfilter.org, kadlec@netfilter.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, netfilter-devel@vger.kernel.org, netdev@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, lorenzo.bianconi@redhat.com, toke@redhat.com, fw@strlen.de, hawk@kernel.org, horms@kernel.org, donhunte@redhat.com Subject: [PATCH bpf-next 0/4] netfilter: Add the capability to offload flowtable in XDP layer Date: Wed, 15 May 2024 23:12:53 +0200 Message-ID: X-Mailer: git-send-email 2.45.0 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: bpf@iogearbox.net Introduce bpf_xdp_flow_offload_lookup kfunc in order to perform the lookup of a given flowtable entry based on the fib tuple of incoming traffic. bpf_xdp_flow_offload_lookup can be used as building block to offload in XDP the sw flowtable processing when the hw support is not available. This series has been tested running the xdp_flowtable_offload eBPF program on an ixgbe 10Gbps NIC (eno2) in order to XDP_REDIRECT the TCP traffic to a veth pair (veth0-veth1) based on the content of the nf_flowtable as soon as the TCP connection is in the established state: [tcp client] (eno1) == LAN == (eno2) xdp_flowtable_offload [XDP_REDIRECT] --> veth0 == veth1 [tcp server] table inet filter { flowtable ft { hook ingress priority filter devices = { eno2, veth0 } } chain forward { type filter hook forward priority filter meta l4proto { tcp, udp } flow add @ft } } - sw flowtable [1 TCP stream, T = 300s]: ~ 6.2 Gbps - xdp flowtable [1 TCP stream, T = 300s]: ~ 7.6 Gbps Changes since RFC: - fix compilation error if BTF is not enabled Florian Westphal (1): netfilter: nf_tables: add flowtable map for xdp offload Lorenzo Bianconi (3): netfilter: add bpf_xdp_flow_offload_lookup kfunc samples/bpf: Add bpf sample to offload flowtable traffic to xdp selftests/bpf: Add selftest for bpf_xdp_flow_offload_lookup kfunc include/net/netfilter/nf_flow_table.h | 12 + net/netfilter/Makefile | 5 + net/netfilter/nf_flow_table_bpf.c | 95 +++ net/netfilter/nf_flow_table_inet.c | 2 + net/netfilter/nf_flow_table_offload.c | 161 ++++- samples/bpf/Makefile | 7 +- samples/bpf/xdp_flowtable_offload.bpf.c | 592 ++++++++++++++++++ samples/bpf/xdp_flowtable_offload_user.c | 128 ++++ tools/testing/selftests/bpf/Makefile | 10 +- tools/testing/selftests/bpf/config | 4 + .../selftests/bpf/progs/xdp_flowtable.c | 142 +++++ .../selftests/bpf/test_xdp_flowtable.sh | 112 ++++ tools/testing/selftests/bpf/xdp_flowtable.c | 142 +++++ 13 files changed, 1407 insertions(+), 5 deletions(-) create mode 100644 net/netfilter/nf_flow_table_bpf.c create mode 100644 samples/bpf/xdp_flowtable_offload.bpf.c create mode 100644 samples/bpf/xdp_flowtable_offload_user.c create mode 100644 tools/testing/selftests/bpf/progs/xdp_flowtable.c create mode 100755 tools/testing/selftests/bpf/test_xdp_flowtable.sh create mode 100644 tools/testing/selftests/bpf/xdp_flowtable.c