From patchwork Mon Jul 19 16:38:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adhemerval Zanella Netto X-Patchwork-Id: 44406 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 8E471395B45B for ; Mon, 19 Jul 2021 16:41:26 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 8E471395B45B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1626712886; bh=vU5xXL7DWUL5u/TjrdH9q/IKKqVE1cHNzxJc/aSYIVw=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To: From; b=We8UZqxhaeehV+4NqjbefLWJGhZ88A7LIK4vHm/v4LPk0K+5iPLytpM5pNIpVPx1/ 8mddBEGLtL0oyIf90dQmnTD1MufCZE5Djv74xiFIZwgHhJ/hsY945ohL60QVz23vqe u0Hu4S2V3qz5Jl+Yv9N7iGpwdVBAngbPPqgDKbqo= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by sourceware.org (Postfix) with ESMTPS id 65BAE3847813 for ; Mon, 19 Jul 2021 16:38:55 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 65BAE3847813 Received: by mail-pj1-x1034.google.com with SMTP id x13-20020a17090a46cdb0290175cf22899cso353842pjg.2 for ; Mon, 19 Jul 2021 09:38:55 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=vU5xXL7DWUL5u/TjrdH9q/IKKqVE1cHNzxJc/aSYIVw=; b=NLRy8g3MdrnoCHQvu3rvAEUMjAwzBG3zWloo/Gz4id361PVN5XPEBEzd0CUnekn1Vh XAUG9O2Kk/T/L9ZRd986m2vEoBxTjUIRrVlz0ykdz7DlLQIjVdtEScEb7hEXJ3lnTmob J7h8YotNmxlXmwT2eNg7cFqIIKMxpSWZzoOD8sAGWwfYd3HxWkXUPghQOcqQysOPNP3e ATVD3Ym79vLlsBtjSBKWxF/oNdKfoRtEA4/M2OvJaChanySUPCK+u+/34UQZu8TuaUV4 wnJ0WZPskaqzOackbqWtM2QuN71lXdULC1gVBglDVZ9+28t4UB7YLy7NTN0IQoN8N0RH ovqg== X-Gm-Message-State: AOAM533RRmyzNIlg0ThPrJLvOmz2dSzl6eSdkj4MPkCoQN0hCLmbzv+a hYBS11iSrySZCVjAwPB/S/cSTFvk1XsbwQ== X-Google-Smtp-Source: ABdhPJw0UJvFGd9pvfZrlhkRujPhknQ2Nxm0ooNCWCHlvESm+h3K/0sBt1AP+ZIf/9w1yAKX2MwwKg== X-Received: by 2002:a17:90a:b284:: with SMTP id c4mr25827410pjr.213.1626712734348; Mon, 19 Jul 2021 09:38:54 -0700 (PDT) Received: from birita.. ([2804:431:c7ca:1133:c8a4:b05d:5ba9:3665]) by smtp.gmail.com with ESMTPSA id l2sm20074055pfc.157.2021.07.19.09.38.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jul 2021 09:38:54 -0700 (PDT) To: libc-alpha@sourceware.org, Carlos O'Donell Subject: [PATCH 3/4] support: Add support_socket_time64_timestamp Date: Mon, 19 Jul 2021 13:38:45 -0300 Message-Id: <20210719163846.2954193-4-adhemerval.zanella@linaro.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210719163846.2954193-1-adhemerval.zanella@linaro.org> References: <20210719163846.2954193-1-adhemerval.zanella@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-12.3 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, 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 Netto 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. --- support/Makefile | 1 + support/support.h | 3 ++ support/support_socket_time64_timestamp.c | 64 +++++++++++++++++++++++ 3 files changed, 68 insertions(+) create mode 100644 support/support_socket_time64_timestamp.c diff --git a/support/Makefile b/support/Makefile index a462781718..d684852373 100644 --- a/support/Makefile +++ b/support/Makefile @@ -77,6 +77,7 @@ libsupport-routines = \ support_set_small_thread_stack_size \ support_shared_allocate \ support_small_stack_thread_attribute \ + support_socket_time64_timestamp \ support_stat_nanoseconds \ support_subprocess \ support_test_compare_blob \ diff --git a/support/support.h b/support/support.h index dbd270c78d..6d7c75a3a9 100644 --- a/support/support.h +++ b/support/support.h @@ -154,6 +154,9 @@ 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. */ +extern bool support_socket_time64_timestamp (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_time64_timestamp.c b/support/support_socket_time64_timestamp.c new file mode 100644 index 0000000000..a2b059a13d --- /dev/null +++ b/support/support_socket_time64_timestamp.c @@ -0,0 +1,64 @@ +/* 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 + +static int +__attribute_used__ +getsockopt_syscall (int fd) +{ + 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; +} +#endif + +bool +support_socket_time64_timestamp (int fd) +{ +#ifdef __linux__ +# if __LINUX_KERNEL_VERSION >= 0x050100 \ + || __WORDSIZE == 64 \ + || (defined __SYSCALL_WORDSIZE && __SYSCALL_WORDSIZE == 64) + return true; +# else + return getsockopt_syscall (fd) != -1; +# endif +#else + return false; +#endif +}