From patchwork Tue Sep 28 13:39:20 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: 45503 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 EB4F93858002 for ; Tue, 28 Sep 2021 13:39:47 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EB4F93858002 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1632836388; bh=bfR6kbI8y3UkKEIyTn8Rtj6GIpHB24AwhKu1F/+0Ozs=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=rw2uKz5ydiajH1N/AeYF5WILoks8YoWHj3dNs665F4c4Mqa4HvlxGgABKN+6T0MUu m8RyLENIbHST1iHLmSKbhZaEaxliQD7pFB8mIVuAq1MRnEkj+RK7X3NR0yaapwNO7G BR90scs0EQ1KDbGY6rRj0SVt1Ns/PZsWhMjzAEnc= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-qt1-x830.google.com (mail-qt1-x830.google.com [IPv6:2607:f8b0:4864:20::830]) by sourceware.org (Postfix) with ESMTPS id 15BFF3858408 for ; Tue, 28 Sep 2021 13:39:26 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 15BFF3858408 Received: by mail-qt1-x830.google.com with SMTP id c20so19858844qtb.2 for ; Tue, 28 Sep 2021 06:39:26 -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=bfR6kbI8y3UkKEIyTn8Rtj6GIpHB24AwhKu1F/+0Ozs=; b=nlX6iLLhKSJa7azworh0iYjtBUDKFXZHbNcMmiq+m5N85++7ndEitVEn6YLUiX2mp7 oSrz+lK1RlW5JjifIBaVU8j519dCmf/WjL/yp9FkXfY4GzV8Ov5zJsoKRPEZ425ERhvr laoDEPfdOOPV24HDA9H/C54Vvdt+1taUSwyV/4vmqERsb8/+RFGG9ESavHhTRv0Q8qtU Brj5QCOkzHh3pkrTB8N9ZKPHhGlS1S+ZfzXtxIQvoUTcuk+WGWfYCcNm9er6oRN7mnRM rMUDR4/NG2gCIHHf4IeEudwBNDKVWvzIVIGQtxf0QZwEkNdyovuj0UtevZZJfUat+q19 M1vQ== X-Gm-Message-State: AOAM530xMN3EOEKX0bP3jIYoMZSFRdv3QCj/Z8JD431tTDkMt4JPgQfC zUk4OOXKYdN2KY8Ior985wI3DYwwjqEtYg== X-Google-Smtp-Source: ABdhPJx22tLEH81PZgd0OB1Pn64qwcFqKYaeoDfWp3h1XmiqFQ8xKHZZCQziyzRBmEb+7wjZggEy5A== X-Received: by 2002:ac8:46c8:: with SMTP id h8mr5576434qto.341.1632836365421; Tue, 28 Sep 2021 06:39:25 -0700 (PDT) Received: from birita.. ([2804:431:c7cb:b338:e093:b762:10f5:43e5]) by smtp.gmail.com with ESMTPSA id m5sm3073567qtk.88.2021.09.28.06.39.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Sep 2021 06:39:25 -0700 (PDT) To: libc-alpha@sourceware.org, yi.zhao@windriver.com, Florian Weimer Subject: [PATCH 1/2] support: Add support_socket_time64_timestamp Date: Tue, 28 Sep 2021 10:39:20 -0300 Message-Id: <20210928133921.2988530-1-adhemerval.zanella@linaro.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Spam-Status: No, score=-12.9 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 2a0731796f..c34ef2a08b 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_time64_timestamp \ support_stat_nanoseconds \ support_subprocess \ support_test_compare_blob \ diff --git a/support/support.h b/support/support.h index 837a806531..ba79271d6d 100644 --- a/support/support.h +++ b/support/support.h @@ -176,6 +176,9 @@ 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 +}