From patchwork Wed Aug 4 07:08:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuniyuki Iwashima X-Patchwork-Id: 492129 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=-14.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 1886AC4338F for ; Wed, 4 Aug 2021 07:09:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E094360F35 for ; Wed, 4 Aug 2021 07:09:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235392AbhHDHJn (ORCPT ); Wed, 4 Aug 2021 03:09:43 -0400 Received: from smtp-fw-9102.amazon.com ([207.171.184.29]:36963 "EHLO smtp-fw-9102.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235290AbhHDHJm (ORCPT ); Wed, 4 Aug 2021 03:09:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.co.jp; i=@amazon.co.jp; q=dns/txt; s=amazon201209; t=1628060971; x=1659596971; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=Vf6Rg7oLPv3qq9V1+kVcgExSPcT2S4l7Ka57kMZ46xg=; b=aKgcYEN3L+9OW7hWVOjtRTs2VHz8sRWsnKHeMYu1c6ofFvm/Joxn1hlX V9MUW0gT0wkPnTEkWy20g3Q24VsSFP4sBF6T4UgZbM89t5pahrpm5kZml RMvX7DvmFcLJncffC4SasAeiqDAbOJoji44Hn2Ut012Qg6fVRKSkWjSGK k=; X-IronPort-AV: E=Sophos;i="5.84,293,1620691200"; d="scan'208";a="150194884" Received: from pdx4-co-svc-p1-lb2-vlan3.amazon.com (HELO email-inbound-relay-2a-538b0bfb.us-west-2.amazon.com) ([10.25.36.214]) by smtp-border-fw-9102.sea19.amazon.com with ESMTP; 04 Aug 2021 07:09:31 +0000 Received: from EX13MTAUWB001.ant.amazon.com (pdx1-ws-svc-p6-lb9-vlan3.pdx.amazon.com [10.236.137.198]) by email-inbound-relay-2a-538b0bfb.us-west-2.amazon.com (Postfix) with ESMTPS id 801C8A1D4C; Wed, 4 Aug 2021 07:09:27 +0000 (UTC) Received: from EX13D04ANC001.ant.amazon.com (10.43.157.89) by EX13MTAUWB001.ant.amazon.com (10.43.161.249) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Wed, 4 Aug 2021 07:09:26 +0000 Received: from 88665a182662.ant.amazon.com (10.43.161.175) by EX13D04ANC001.ant.amazon.com (10.43.157.89) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Wed, 4 Aug 2021 07:09:20 +0000 From: Kuniyuki Iwashima To: "David S. Miller" , Jakub Kicinski , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , "Song Liu" , Yonghong Song , John Fastabend , KP Singh CC: Benjamin Herrenschmidt , Kuniyuki Iwashima , Kuniyuki Iwashima , , Subject: [PATCH v3 bpf-next 0/2] BPF iterator for UNIX domain socket. Date: Wed, 4 Aug 2021 16:08:49 +0900 Message-ID: <20210804070851.97834-1-kuniyu@amazon.co.jp> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Originating-IP: [10.43.161.175] X-ClientProxiedBy: EX13D17UWB001.ant.amazon.com (10.43.161.252) To EX13D04ANC001.ant.amazon.com (10.43.157.89) Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch set adds BPF iterator support for UNIX domain socket. The first patch implements it and the second adds a selftest. Changelog: v3: - Export some functions for CONFIG_UNIX=m v2: https://lore.kernel.org/netdev/20210803011110.21205-1-kuniyu@amazon.co.jp/ - Implement bpf_iter specific seq_ops->stop() - Add bpf_iter__unix in bpf_iter.h - Move common definitions in selftest to bpf_tracing_net.h - Include the code for abstract UNIX domain socket as comment in selftest - Use ASSERT_OK_PTR() instead of CHECK() - Make ternary operators on single line v1: https://lore.kernel.org/netdev/20210729233645.4869-1-kuniyu@amazon.co.jp/ Kuniyuki Iwashima (2): bpf: af_unix: Implement BPF iterator for UNIX domain socket. selftest/bpf: Implement sample UNIX domain socket iterator program. fs/proc/proc_net.c | 2 + include/linux/btf_ids.h | 3 +- kernel/bpf/bpf_iter.c | 3 + net/core/filter.c | 1 + net/unix/af_unix.c | 93 +++++++++++++++++++ .../selftests/bpf/prog_tests/bpf_iter.c | 16 ++++ tools/testing/selftests/bpf/progs/bpf_iter.h | 8 ++ .../selftests/bpf/progs/bpf_iter_unix.c | 86 +++++++++++++++++ .../selftests/bpf/progs/bpf_tracing_net.h | 4 + 9 files changed, 215 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/bpf/progs/bpf_iter_unix.c