From patchwork Wed Sep 29 14:06:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adhemerval Zanella X-Patchwork-Id: 45553 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 8D3783857C47 for ; Wed, 29 Sep 2021 14:06:45 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 8D3783857C47 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1632924405; bh=j5wlLqj5nQNmJj81e4IIJc/Om+xeZc4FzHZOQSUQmTc=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=nhn4/xIsKZoFQvfYwZ0zOvOzw/GwdhZfYccJ90LZFiIuWhMTiY5x0KkDrmz8cKy4z VR79wyxadmjIL4lhda2gvGo8ocZoYa8q/U1ZsPgQ3pUUr487ELu6iv806T7u7/57Vk IfeXmKEe49HDj9OA9Kxs3kDLd9raNMMY05aVnx6E= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-ua1-x92c.google.com (mail-ua1-x92c.google.com [IPv6:2607:f8b0:4864:20::92c]) by sourceware.org (Postfix) with ESMTPS id 5FE453858C60 for ; Wed, 29 Sep 2021 14:06:23 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 5FE453858C60 Received: by mail-ua1-x92c.google.com with SMTP id 37so1622146uaq.11 for ; Wed, 29 Sep 2021 07:06:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=j5wlLqj5nQNmJj81e4IIJc/Om+xeZc4FzHZOQSUQmTc=; b=pLK24kfpRTtG2vjlr0SpIgypHVN+aDRtQp6UST/8sdm2/0MVHegXDol9A9ojsN4x3X FO5OvuJP25xKrMHSYh8oceKWr7CPm8sI4Jt7gNpoLDQQg8cmQXFD/igLt95Lm0ji6Rt+ s0cnaTiHP1//SnAlDbVVw2gBG8MNtuPHXKkPbGspOvTPcuHGGmqhTRnaecYAndm35XrV CG3LIhJE6nYNFnMTWclah3Rs3z6VODcqs7WeU2cm2ZcmqP2zQ1XkqekGiTGcBm/rFEHo rLr/RIrmGklKBxaS5YAAVidiDl43+oyYM3SDXwBYgXYfxwBgh8FkFDCEDlnAy74b2JtT SKyg== X-Gm-Message-State: AOAM531puaXXNc22yeQFcvM4zax39Q051w+9icGpj5pMSOD1QvRleyp9 +9BOWm4kxkqAdKpSbDKlBjMl69sAbHcMmA== X-Google-Smtp-Source: ABdhPJyHslY9vXHeQ0B5wi1YHa4OC2B3fvYZObPTmSLKxi85T7qud0DBQHZOohWe33wW8IxLgkMBZw== X-Received: by 2002:ab0:6c52:: with SMTP id q18mr185028uas.137.1632924382570; Wed, 29 Sep 2021 07:06:22 -0700 (PDT) Received: from birita.. ([2804:431:c7cb:b338:4bf7:4eb8:abb4:7729]) by smtp.gmail.com with ESMTPSA id d12sm738298vke.43.2021.09.29.07.06.21 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Sep 2021 07:06:22 -0700 (PDT) To: libc-alpha@sourceware.org Subject: [PATCH v2 1/2] support: Add support_socket_so_timestamp_time64 Date: Wed, 29 Sep 2021 11:06:18 -0300 Message-Id: <20210929140619.279302-1-adhemerval.zanella@linaro.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Spam-Status: No, score=-11.9 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_NUMSUBJECT, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Adhemerval Zanella via Libc-alpha From: Adhemerval Zanella Reply-To: Adhemerval Zanella Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" Check if the socket support 64-bit network packages timestamps (SO_TIMESTAMP and SO_TIMESTAMPNS). This will be used on recvmsg and recvmmsg tests to check if the timestamp should be generated. --- v2: Rename to support_socket_so_timestamp_time64. --- support/Makefile | 1 + support/support.h | 4 ++ support/support_socket_so_timestamp_time64.c | 56 ++++++++++++++++++++ 3 files changed, 61 insertions(+) create mode 100644 support/support_socket_so_timestamp_time64.c diff --git a/support/Makefile b/support/Makefile index 2a0731796f..724ae6d712 100644 --- a/support/Makefile +++ b/support/Makefile @@ -78,6 +78,7 @@ libsupport-routines = \ support_set_small_thread_stack_size \ support_shared_allocate \ support_small_stack_thread_attribute \ + support_socket_so_timestamp_time64 \ support_stat_nanoseconds \ support_subprocess \ support_test_compare_blob \ diff --git a/support/support.h b/support/support.h index 837a806531..ec15d81009 100644 --- a/support/support.h +++ b/support/support.h @@ -176,6 +176,10 @@ extern bool support_select_modifies_timeout (void); tv_usec larger than 1000000. */ extern bool support_select_normalizes_timeout (void); +/* Return true if socket FD supports 64-bit timestamps with the SOL_SOCKET + and SO_TIMESTAMP/SO_TIMESTAMPNS. */ +extern bool support_socket_so_timestamp_time64 (int fd); + /* Create a timer that trigger after SEC seconds and NSEC nanoseconds. If REPEAT is true the timer will repeat indefinitely. If CALLBACK is not NULL, the function will be called when the timer expires; otherwise a diff --git a/support/support_socket_so_timestamp_time64.c b/support/support_socket_so_timestamp_time64.c new file mode 100644 index 0000000000..eb8f8ef0cc --- /dev/null +++ b/support/support_socket_so_timestamp_time64.c @@ -0,0 +1,56 @@ +/* Return whether socket supports 64-bit timestamps. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include +#include +#ifdef __linux__ +# include +#endif + +bool +support_socket_so_timestamp_time64 (int fd) +{ +#ifdef __linux__ +# if __LINUX_KERNEL_VERSION >= 0x050100 \ + || __WORDSIZE == 64 \ + || (defined __SYSCALL_WORDSIZE && __SYSCALL_WORDSIZE == 64) + return true; +# else + int level = SOL_SOCKET; + int optname = COMPAT_SO_TIMESTAMP_NEW; + int optval; + socklen_t len = sizeof (optval); + + int r = syscall (__NR_getsockopt, fd, level, optname, &optval, &len); +# ifdef __NR_socketcall + if (r == -1 && errno == ENOSYS) + { + long int args[] = { fd, level, optname, (long int) &optval, + sizeof (optval) }; + r = syscall (__NR_socketcall, 15 /* SOCKOP_getsockopt */ , args); + } +# endif + return r != -1; +# endif +#else + return false; +#endif +}