From patchwork Wed Mar 16 07:27:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseniy Krasnov X-Patchwork-Id: 12782411 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DD97C433EF for ; Wed, 16 Mar 2022 07:28:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354157AbiCPH36 (ORCPT ); Wed, 16 Mar 2022 03:29:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50190 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237548AbiCPH35 (ORCPT ); Wed, 16 Mar 2022 03:29:57 -0400 Received: from mail.sberdevices.ru (mail.sberdevices.ru [45.89.227.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 828FAB878; Wed, 16 Mar 2022 00:28:39 -0700 (PDT) Received: from s-lin-edge02.sberdevices.ru (localhost [127.0.0.1]) by mail.sberdevices.ru (Postfix) with ESMTP id C71BD5FD04; Wed, 16 Mar 2022 10:28:36 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1647415716; bh=2IlBHxR34MTy4N3KHRTBgHnJ2xxkKsv6pow01JHAr2E=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=aiZQcrSk0UxNXLP8lYuD/GlPiqP+/tOv77ygcczSwDKPCB2P0/l2uk6HVTvqrW65Y YvP5XJ3YzecjESk1EKop5WoxigAM8xdkmm4RI07nZvAHjV3gQS2ucDOfTgbS6HIGrU CR3ewPvUJzvHSF2Fbl9n+jg1FAO10ed+gKexoe0JiSCDs/BTEsiLmsVVDyAyxM/pOI C5vms8eX8n393OfBuJ8EXapW+vwIyocP+QIpBaHA/LlVg7yeVZHHzTy61zZHjZDrjo GS1uoFbSMIRrYGy308fdMown/eLgAzLkgGRXJWRNgv/p/0hPQueTg74a3VBl9JNMXb To9Mp5sMgE7QQ== Received: from S-MS-EXCH01.sberdevices.ru (S-MS-EXCH01.sberdevices.ru [172.16.1.4]) by mail.sberdevices.ru (Postfix) with ESMTP; Wed, 16 Mar 2022 10:28:36 +0300 (MSK) From: Krasnov Arseniy Vladimirovich To: Stefano Garzarella CC: Rokosov Dmitry Dmitrievich , Krasnov Arseniy , "kvm@vger.kernel.org" , "virtualization@lists.linux-foundation.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Krasnov Arseniy Vladimirovich Subject: [RFC PATCH v2 1/2] af_vsock: SOCK_SEQPACKET receive timeout test Thread-Topic: [RFC PATCH v2 1/2] af_vsock: SOCK_SEQPACKET receive timeout test Thread-Index: AQHYOQdQb7ugiPNDrEajiUcKS1B+hw== Date: Wed, 16 Mar 2022 07:27:45 +0000 Message-ID: <2bc15104-37e6-088a-1699-dc27d0e2dadf@sberdevices.ru> In-Reply-To: <1474b149-7d4c-27b2-7e5c-ef00a718db76@sberdevices.ru> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.16.1.12] Content-ID: <07689CD41ED3BF48AF8196A35B35777C@sberdevices.ru> MIME-Version: 1.0 X-KSMG-Rule-ID: 4 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Status: not scanned, disabled by settings X-KSMG-AntiSpam-Interceptor-Info: not scanned X-KSMG-AntiPhishing: not scanned, disabled by settings X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 1.1.2.30, bases: 2022/03/16 03:19:00 #18979713 X-KSMG-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-State: RFC Test for receive timeout check: connection is established, receiver sets timeout, but sender does nothing. Receiver's 'read()' call must return EAGAIN. Signed-off-by: Arseniy Krasnov --- v1 -> v2: 1) Check amount of time spent in 'read()'. tools/testing/vsock/vsock_test.c | 79 ++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c index 2a3638c0a008..6d7648cce5aa 100644 --- a/tools/testing/vsock/vsock_test.c +++ b/tools/testing/vsock/vsock_test.c @@ -16,6 +16,7 @@ #include #include #include +#include #include "timeout.h" #include "control.h" @@ -391,6 +392,79 @@ static void test_seqpacket_msg_trunc_server(const struct test_opts *opts) close(fd); } +static time_t current_nsec(void) +{ + struct timespec ts; + + if (clock_gettime(CLOCK_REALTIME, &ts)) { + perror("clock_gettime(3) failed"); + exit(EXIT_FAILURE); + } + + return (ts.tv_sec * 1000000000ULL) + ts.tv_nsec; +} + +#define RCVTIMEO_TIMEOUT_SEC 1 +#define READ_OVERHEAD_NSEC 250000000 /* 0.25 sec */ + +static void test_seqpacket_timeout_client(const struct test_opts *opts) +{ + int fd; + struct timeval tv; + char dummy; + time_t read_enter_ns; + time_t read_overhead_ns; + + fd = vsock_seqpacket_connect(opts->peer_cid, 1234); + if (fd < 0) { + perror("connect"); + exit(EXIT_FAILURE); + } + + tv.tv_sec = RCVTIMEO_TIMEOUT_SEC; + tv.tv_usec = 0; + + if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv)) == -1) { + perror("setsockopt 'SO_RCVTIMEO'"); + exit(EXIT_FAILURE); + } + + read_enter_ns = current_nsec(); + + if ((read(fd, &dummy, sizeof(dummy)) != -1) || + (errno != EAGAIN)) { + perror("EAGAIN expected"); + exit(EXIT_FAILURE); + } + + read_overhead_ns = current_nsec() - read_enter_ns - + 1000000000ULL * RCVTIMEO_TIMEOUT_SEC; + + if (read_overhead_ns > READ_OVERHEAD_NSEC) { + fprintf(stderr, + "too much time in read(2) with SO_RCVTIMEO: %lu ns\n", + read_overhead_ns); + exit(EXIT_FAILURE); + } + + control_writeln("WAITDONE"); + close(fd); +} + +static void test_seqpacket_timeout_server(const struct test_opts *opts) +{ + int fd; + + fd = vsock_seqpacket_accept(VMADDR_CID_ANY, 1234, NULL); + if (fd < 0) { + perror("accept"); + exit(EXIT_FAILURE); + } + + control_expectln("WAITDONE"); + close(fd); +} + static struct test_case test_cases[] = { { .name = "SOCK_STREAM connection reset", @@ -431,6 +505,11 @@ static struct test_case test_cases[] = { .run_client = test_seqpacket_msg_trunc_client, .run_server = test_seqpacket_msg_trunc_server, }, + { + .name = "SOCK_SEQPACKET timeout", + .run_client = test_seqpacket_timeout_client, + .run_server = test_seqpacket_timeout_server, + }, {}, };