From patchwork Fri Jan 4 09:07:06 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Ignatov X-Patchwork-Id: 1020642 Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=fb.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=fb.com header.i=@fb.com header.b="U1p676Ex"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43WJpB4VKzz9s3l for ; Fri, 4 Jan 2019 20:07:30 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726565AbfADJH3 (ORCPT ); Fri, 4 Jan 2019 04:07:29 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:52494 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725913AbfADJH2 (ORCPT ); Fri, 4 Jan 2019 04:07:28 -0500 Received: from pps.filterd (m0109331.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x048vWUK016337 for ; Fri, 4 Jan 2019 01:07:27 -0800 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=vmBSL2Sv/6xeiiJxcV/hw+luYHtAX2KA0O2vbuSOeCE=; b=U1p676ExoUilLCZSxP/f/nVVifUF60Lzqo64a+v2rrJjLXN+aZNKuLKYHmKfJwAhq9uv ff1d94aJIJe1OKl12ORfejT+DH+/d6j2pJPhyGcY0MUbrWLLs48R21cI/txW/PL2aUEX n5l9PZ9IaeaN7gvjemHorxlo0TXiJu3sbwU= Received: from mail.thefacebook.com ([199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2pt38k8839-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Fri, 04 Jan 2019 01:07:27 -0800 Received: from mx-out.facebook.com (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::129) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1531.3; Fri, 4 Jan 2019 01:07:26 -0800 Received: by dev082.prn2.facebook.com (Postfix, from userid 572249) id 0E7683703251; Fri, 4 Jan 2019 01:07:25 -0800 (PST) Smtp-Origin-Hostprefix: dev From: Andrey Ignatov Smtp-Origin-Hostname: dev082.prn2.facebook.com To: CC: Andrey Ignatov , , , , Smtp-Origin-Cluster: prn2c23 Subject: [PATCH bpf v2 0/2] bpf: Fix [::] -> [::1] rewrite in sys_sendmsg Date: Fri, 4 Jan 2019 01:07:06 -0800 Message-ID: X-Mailer: git-send-email 2.17.1 X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-01-04_04:, , signatures=0 X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The patch set fixes BSD'ism in sys_sendmsg to rewrite unspecified destination IPv6 for unconnected UDP sockets in sys_sendmsg with [::1] in case when either CONFIG_CGROUP_BPF is enabled or when sys_sendmsg BPF hook sets destination IPv6 to [::]. Patch 1 is the fix and provides more details. Patch 2 adds two test cases to verify the fix. v1->v2: * Fix compile error in patch 1. Andrey Ignatov (2): bpf: Fix [::] -> [::1] rewrite in sys_sendmsg selftests/bpf: Test [::] -> [::1] rewrite in sys_sendmsg in test_sock_addr net/ipv6/udp.c | 8 +-- tools/testing/selftests/bpf/test_sock_addr.c | 53 ++++++++++++++++++-- 2 files changed, 54 insertions(+), 7 deletions(-)