From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,T_DKIMWL_WL_HIGH,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2EBD6C04AB6 for ; Fri, 31 May 2019 22:29:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0202C26F26 for ; Fri, 31 May 2019 22:29:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="Krr+iT7N" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726711AbfEaW3O (ORCPT ); Fri, 31 May 2019 18:29:14 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:35584 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726450AbfEaW3O (ORCPT ); Fri, 31 May 2019 18:29:14 -0400 Received: from pps.filterd (m0044008.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x4VMOHMS019438 for ; Fri, 31 May 2019 15:29:13 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=facebook; bh=hf0iBmL+ZPzVVFEoCzjI/6lyyAyBGnjBbdBFpVUfY54=; b=Krr+iT7NPj8l45hO/CK6kHncf4mbnfBQXRIH1Q1Bv0yzLuhwByjC7dFh8JS8TAqg2F1I KmfnTC/5XTWpAlQ2eb+ZWHAW6nCVOM9m8h6jCTuJXU3cOy9ktkrqgoqrtwzd9M88bnRl ClDOggpkLbQppA7enuw/4fMmelox10Tbt3Q= Received: from mail.thefacebook.com (mailout.thefacebook.com [199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2su8tu8w81-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Fri, 31 May 2019 15:29:13 -0700 Received: from mx-out.facebook.com (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::125) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5; Fri, 31 May 2019 15:29:12 -0700 Received: by devbig005.ftw2.facebook.com (Postfix, from userid 6611) id 409E62941A0E; Fri, 31 May 2019 15:29:10 -0700 (PDT) Smtp-Origin-Hostprefix: devbig From: Martin KaFai Lau Smtp-Origin-Hostname: devbig005.ftw2.facebook.com To: , CC: Alexei Starovoitov , Daniel Borkmann , David Miller , Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH bpf 0/2] bpf: udp: A few reuseport's bpf_prog for udp lookup Date: Fri, 31 May 2019 15:29:10 -0700 Message-ID: <20190531222910.2499861-1-kafai@fb.com> X-Mailer: git-send-email 2.17.1 X-FB-Internal: Safe MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-05-31_15:,, signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 suspectscore=8 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=486 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905310138 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This series has fixes when running reuseport's bpf_prog for udp lookup. If there is reuseport's bpf_prog, the common issue is the reuseport code path expects skb->data pointing to the transport header (udphdr here). A couple of commits broke this expectation. The issue is specific to running bpf_prog, so bpf tag is used for this series. Please refer to the individual commit message for details. Martin KaFai Lau (2): bpf: udp: ipv6: Avoid running reuseport's bpf_prog from __udp6_lib_err bpf: udp: Avoid calling reuseport's bpf_prog from udp_gro net/ipv4/udp.c | 6 +++++- net/ipv6/udp.c | 4 ++-- 2 files changed, 7 insertions(+), 3 deletions(-) -- 2.17.1