From patchwork Wed Nov 18 00:17:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Fomichev X-Patchwork-Id: 1401901 Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20161025 header.b=Rm+nB6H2; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CbNgT3Btqz9sT6 for ; Wed, 18 Nov 2020 11:17:57 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727060AbgKRARq (ORCPT ); Tue, 17 Nov 2020 19:17:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48848 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726202AbgKRARq (ORCPT ); Tue, 17 Nov 2020 19:17:46 -0500 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D088CC0617A6 for ; Tue, 17 Nov 2020 16:17:44 -0800 (PST) Received: by mail-yb1-xb4a.google.com with SMTP id c9so59392ybs.8 for ; Tue, 17 Nov 2020 16:17:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:message-id:mime-version:subject:from:to:cc; bh=KSzntMlQutgORfFcLQlCCoRzBQW8Wn75jurvpaJoF8E=; b=Rm+nB6H2KrMsrAYrIv1Yg2A06B3tgtEHgKHUzMvuyI+kLnMZMsu9QHqGc3XFv8WgJY 58ZX6vEaYkGLbxljUUcXKyV7MfsHqHFYhOW63JjMi1l4W4RGB5Lfjf9jYnwcsTeCSAL9 lgGJlHKKt6nMH7XNwQ4C6h41KC1C9A/ueuaEvu9IMN67oA8iKpF7NWMKlfHB2T16k43E neINuSczClnUb7Zm0OBzQesPUbJO9lAcktccRDEAKE0NS6l1f7P4ccUMV1eXqsvnTTYd eC22NGtQALgiiUksx2qaA6A/p0ASaaB1mSHwDhBErlGevq6lq+/ylB04drLQEmFT6047 SvZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:message-id:mime-version:subject:from :to:cc; bh=KSzntMlQutgORfFcLQlCCoRzBQW8Wn75jurvpaJoF8E=; b=aB5Ni6HHuEf04BpXddsPYZaEq/m/ZjnRiz1K36LHGXuBQuLNk9fPlluC9QLB1f81B3 LtdcI/P1jVAnNrB41vnmj9mQJK92308aLVIQMh2eIcmKaE33v/EzqmjXn6LO294k8dT1 pQDGXqIT9zETn8q0bgi06/v+vRVMcLavHYgJs/Ne0jV7aJFJVH2jqkHF5pSsxuCNP05W ncE+slP1eAPbUzmuiMb/NeWyOHVrjBAQRGVMEyxkQlGjBOpb5o5v6CID7wrZKYCl9M6q mISx5ON6kVPGArQD3jViXXXQKMkwkVyJUV+S6beSMCBQE/h9bUL+EZ1NAJ38dmIblavy tOVg== X-Gm-Message-State: AOAM532JkA9s2C602Ft4Tc9LolhmCvmIbIVUp0cP3rkLPc93kUfxSH1Q DAS6By/mwjHDWsSrDOQhfoWXBqTX5OyWs5GPSNcRTUrsRsjFvuSFeW68m7VAWekrYmVZhKbUxRE J5rXIFOLwP913tTDRU/Ss15QUYFdoPeQVBUoqH4PL+NFEGmc8JueYmw== X-Google-Smtp-Source: ABdhPJw4kRiwpjmqN9x2bFVjJhPOCp5kFZFnwAYaQT7Ly2H4YvEb+aTyLkBaH0FZuaaOtqs6Y0wP2uk= Sender: "sdf via sendgmr" X-Received: from sdf2.svl.corp.google.com ([2620:15c:2c4:1:7220:84ff:fe09:7732]) (user=sdf job=sendgmr) by 2002:a5b:10:: with SMTP id a16mr3748622ybp.242.1605658664033; Tue, 17 Nov 2020 16:17:44 -0800 (PST) Date: Tue, 17 Nov 2020 16:17:39 -0800 Message-Id: <20201118001742.85005-1-sdf@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.29.2.299.gdc1121823c-goog Subject: [PATCH bpf-next 0/3] bpf: expose bpf_{s,g}etsockopt helpers to bind{4,6} hooks From: Stanislav Fomichev To: netdev@vger.kernel.org, bpf@vger.kernel.org Cc: davem@davemloft.net, ast@kernel.org, daniel@iogearbox.net, Stanislav Fomichev Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This might be useful for the listener sockets to pre-populate some options. Since those helpers require locked sockets, I'm changing bind hooks to lock/unlock the sockets. This should not cause any performance overhead because at this point there shouldn't be any socket lock contention and the locking/unlocking should be cheap. Also, as part of the series, I convert test_sock_addr bpf assembly into C (and preserve the narrow load tests) to make it easier to extend with th bpf_setsockopt later on. Stanislav Fomichev (3): selftests/bpf: rewrite test_sock_addr bind bpf into C bpf: allow bpf_{s,g}etsockopt from cgroup bind{4,6} hooks selftests/bpf: extend bind{4,6} programs with a call to bpf_setsockopt include/linux/bpf-cgroup.h | 12 +- net/core/filter.c | 4 + net/ipv4/af_inet.c | 2 +- net/ipv6/af_inet6.c | 2 +- .../testing/selftests/bpf/progs/bind4_prog.c | 104 ++++++++++ .../testing/selftests/bpf/progs/bind6_prog.c | 121 +++++++++++ tools/testing/selftests/bpf/test_sock_addr.c | 196 ++---------------- 7 files changed, 249 insertions(+), 192 deletions(-) create mode 100644 tools/testing/selftests/bpf/progs/bind4_prog.c create mode 100644 tools/testing/selftests/bpf/progs/bind6_prog.c