From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 3DD311EA73; Mon, 23 Oct 2023 17:19:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=iogearbox.net header.i=@iogearbox.net header.b="E0uIgfeu" Received: from www62.your-server.de (www62.your-server.de [213.133.104.62]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02C92EE; Mon, 23 Oct 2023 10:19:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=iogearbox.net; s=default2302; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References; bh=Xvdm2nlWUsjr8Nk0q5x2uduxl+Asd3Qw4JFB76l2a2s=; b=E0uIgfeuP989sKTiMQ2OERyWYW FOLKozUw/ulgcoOtR88leGUYPBynEeYCZxaOIqx+v3ekn6CC4H3jE0Ii8OKNbxL6QkwGlVRDhsoX/ I/UpcPKuT4p2e3MFEaMbYnFAtBeWIsGa8XwBCmqp3TctcMSYtUX0T8unUiVtwBJWuw+LXnPZ0OKvh arfvbugoH69rejYDnLeADGeEgSriQQdZFXgXVuTHUklOhRudIiB2wXfElPVFxiHRBbKgMB1liaiVy FrNh7blEu4I10aN16bueRqmo9Ja3k2H+et85Ib2sm1rT6Nyd7vgPH3xHN92vYkiZhiyuX2d1BEG1w pJYMZKsw==; Received: from 226.206.1.85.dynamic.wline.res.cust.swisscom.ch ([85.1.206.226] helo=localhost) by www62.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1quyZx-000PQZ-0F; Mon, 23 Oct 2023 19:19:01 +0200 From: Daniel Borkmann To: bpf@vger.kernel.org Cc: netdev@vger.kernel.org, martin.lau@linux.dev, razor@blackwall.org, ast@kernel.org, andrii@kernel.org, john.fastabend@gmail.com, sdf@google.com, toke@kernel.org, kuba@kernel.org, andrew@lunn.ch, Daniel Borkmann Subject: [PATCH bpf-next v3 0/7] Add bpf programmable net device Date: Mon, 23 Oct 2023 19:18:49 +0200 Message-Id: <20231023171856.18324-1-daniel@iogearbox.net> X-Mailer: git-send-email 2.21.0 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Authenticated-Sender: daniel@iogearbox.net X-Virus-Scanned: Clear (ClamAV 0.103.10/27070/Mon Oct 23 09:53:01 2023) This work adds a BPF programmable device which can operate in L3 or L2 mode where the BPF program is part of the xmit routine. It's program management is done via bpf_mprog and it comes with BPF link support. For details see patch 1 and following. Thanks! v2 -> v3: - Remove setting dev->min_mtu to ETH_MIN_MTU (Andrew) - Do not populate ethtool info->version (Andrew) - Populate netdev private data before register_netdevice (Andrew) - Use strscpy for ifname template (Jakub) - Use GFP_KERNEL_ACCOUNT for link kzalloc (Jakub) - Carry and dump link attach type for bpftool (Toke) v1 -> v2: - Rename from meta (Toke, Andrii, Alexei) - Reuse skb_scrub_packet (Stan) - Remove IFF_META and use netdev_ops (Toke) - Add comment to multicast handler (Toke) - Remove silly version info (Toke) - Fix attach_type_name (Quentin) - Rework libbpf link attach api to be similar as tcx (Andrii) - Move flags last for bpf_netkit_opts (Andrii) - Rebased to bpf_mprog query api changes - Folded link support patch into main one Daniel Borkmann (7): netkit, bpf: Add bpf programmable net device tools: Sync if_link uapi header libbpf: Add link-based API for netkit bpftool: Implement link show support for netkit bpftool: Extend net dump with netkit progs selftests/bpf: Add netlink helper library selftests/bpf: Add selftests for netkit MAINTAINERS | 9 + drivers/net/Kconfig | 9 + drivers/net/Makefile | 1 + drivers/net/netkit.c | 934 ++++++++++++++++++ include/net/netkit.h | 38 + include/uapi/linux/bpf.h | 14 + include/uapi/linux/if_link.h | 24 + kernel/bpf/syscall.c | 30 +- .../bpf/bpftool/Documentation/bpftool-net.rst | 8 +- tools/bpf/bpftool/link.c | 9 + tools/bpf/bpftool/net.c | 7 +- tools/include/uapi/linux/bpf.h | 14 + tools/include/uapi/linux/if_link.h | 141 +++ tools/lib/bpf/bpf.c | 16 + tools/lib/bpf/bpf.h | 5 + tools/lib/bpf/libbpf.c | 39 + tools/lib/bpf/libbpf.h | 15 + tools/lib/bpf/libbpf.map | 1 + tools/testing/selftests/bpf/Makefile | 19 +- tools/testing/selftests/bpf/config | 1 + tools/testing/selftests/bpf/netlink_helpers.c | 358 +++++++ tools/testing/selftests/bpf/netlink_helpers.h | 46 + .../selftests/bpf/prog_tests/tc_helpers.h | 4 + .../selftests/bpf/prog_tests/tc_netkit.c | 687 +++++++++++++ .../selftests/bpf/progs/test_tc_link.c | 13 + 25 files changed, 2427 insertions(+), 15 deletions(-) create mode 100644 drivers/net/netkit.c create mode 100644 include/net/netkit.h create mode 100644 tools/testing/selftests/bpf/netlink_helpers.c create mode 100644 tools/testing/selftests/bpf/netlink_helpers.h create mode 100644 tools/testing/selftests/bpf/prog_tests/tc_netkit.c -- 2.34.1