From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lawrence Brakmo Subject: [PATCH bpf 0/11] bpf: more sock_ops callbacks Date: Mon, 18 Dec 2017 22:21:49 -0800 Message-ID: <20171219062200.372711-1-brakmo@fb.com> Mime-Version: 1.0 Content-Type: text/plain Cc: Kernel Team , Blake Matheny , Alexei Starovoitov , Daniel Borkmann To: netdev Return-path: Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:51426 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933606AbdLSGXG (ORCPT ); Tue, 19 Dec 2017 01:23:06 -0500 Received: from pps.filterd (m0001255.ppops.net [127.0.0.1]) by mx0b-00082601.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vBJ6MECD026721 for ; Mon, 18 Dec 2017 22:23:05 -0800 Received: from mail.thefacebook.com ([199.201.64.23]) by mx0b-00082601.pphosted.com with ESMTP id 2exn1795gf-3 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Mon, 18 Dec 2017 22:23:05 -0800 Sender: netdev-owner@vger.kernel.org List-ID: This patchset adds support for: - direct R or R/W access to many tcp_sock fields - passing up to 4 arguments to sock_ops BPF functions - tcp_sock field bpf_sock_ops_flags for controlling callbacks - optionally calling sock_ops BPF program when RTO fires - optionally calling sock_ops BPF program when packet is retransmitted - optionally calling sock_ops BPF program when TCP state changes - access to tclass and sk_txhash - new selftest Signed-off-by: Lawrence Brakmo Consists of the following patches: [PATCH bpf 01/11] bpf: Make SOCK_OPS_GET_TCP size independent [PATCH bpf 02/11] bpf: Make SOCK_OPS_GET_TCP struct independent [PATCH bpf 03/11] bpf: Add write access to tcp_sock and sock fields [PATCH bpf 04/11] bpf: Support passing args to sock_ops bpf function [PATCH bpf 05/11] bpf: Adds field bpf_sock_ops_flags to tcp_sock [PATCH bpf 06/11] bpf: Add sock_ops RTO callback [PATCH bpf 07/11] bpf: Add support for reading sk_state and more [PATCH bpf 08/11] bpf: Add sock_ops R/W access to tclass & sk_txhash [PATCH bpf 09/11] bpf: Add BPF_SOCK_OPS_RETRANS_CB [PATCH bpf 10/11] bpf: Add BPF_SOCK_OPS_STATE_CB [PATCH bpf 11/11] bpf: add selftest for tcpbpf include/linux/filter.h | 4 + include/linux/tcp.h | 8 ++ include/net/tcp.h | 66 +++++++++- include/uapi/linux/bpf.h | 39 +++++- include/uapi/linux/tcp.h | 5 + net/core/filter.c | 212 ++++++++++++++++++++++++++++++-- net/ipv4/tcp.c | 4 +- net/ipv4/tcp_nv.c | 2 +- net/ipv4/tcp_output.c | 5 +- net/ipv4/tcp_timer.c | 9 ++ tools/include/uapi/linux/bpf.h | 45 ++++++- tools/testing/selftests/bpf/Makefile | 5 +- tools/testing/selftests/bpf/tcp_client.py | 57 +++++++++ tools/testing/selftests/bpf/tcp_server.py | 83 +++++++++++++ tools/testing/selftests/bpf/test_tcpbpf_kern.c | 133 ++++++++++++++++++++ tools/testing/selftests/bpf/test_tcpbpf_user.c | 119 ++++++++++++++++++ 16 files changed, 772 insertions(+), 24 deletions(-)