From patchwork Thu Mar 17 05:26:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseniy Krasnov X-Patchwork-Id: 12783525 X-Patchwork-Delegate: kuba@kernel.org 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 20813C433F5 for ; Thu, 17 Mar 2022 05:54:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229494AbiCQFz2 (ORCPT ); Thu, 17 Mar 2022 01:55:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52394 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229498AbiCQFz0 (ORCPT ); Thu, 17 Mar 2022 01:55:26 -0400 Received: from mail.sberdevices.ru (mail.sberdevices.ru [45.89.227.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94A282220EE; Wed, 16 Mar 2022 22:27:58 -0700 (PDT) Received: from s-lin-edge02.sberdevices.ru (localhost [127.0.0.1]) by mail.sberdevices.ru (Postfix) with ESMTP id B01A25FD05; Thu, 17 Mar 2022 08:27:55 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1647494875; bh=Ompi4xbRQbnpUpOJ16sHOJ+JWKY7vg+02Db2wCk8mCA=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=irhKgrfoFShVO8afiyTqqzR5u3hxZudUmTx7dEcPsaHh8ohvQUKsEito67HvQt9aT zwxg1odSk5K6yC3jnDCFqUQYfQ1Z7MDjuVvYA458ebXxPEq8dzf4x9KQ7NLo8W7vVq C3jnMT93zUWMDs3rAqkfT3ngfMsDeZ8oyqMxRx1o8UasHrr9Spjb9XEB2UEdeHGUZA nvdauIlUwxPYZwStQtGo/pV2Iea1vToRKitC51AZMNyiLKKPPjfc7B4u9BHEf3V2oE jQT1HsKAeALd9td8mJT4P7+5mieCmsw+kddX2GDC0ha2YgcQdRstDK3NniSWSfyGIf l3W5yzny+Rd4w== Received: from S-MS-EXCH02.sberdevices.ru (S-MS-EXCH02.sberdevices.ru [172.16.1.5]) by mail.sberdevices.ru (Postfix) with ESMTP; Thu, 17 Mar 2022 08:27:55 +0300 (MSK) From: Krasnov Arseniy Vladimirovich To: Stefano Garzarella CC: Krasnov Arseniy , Rokosov Dmitry Dmitrievich , Krasnov Arseniy Vladimirovich , "kvm@vger.kernel.org" , "virtualization@lists.linux-foundation.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: [PATCH net-next v3 1/2] af_vsock: SOCK_SEQPACKET receive timeout test Thread-Topic: [PATCH net-next v3 1/2] af_vsock: SOCK_SEQPACKET receive timeout test Thread-Index: AQHYOb+Ukv8XF38YE06ap5RsA4YM1g== Date: Thu, 17 Mar 2022 05:26:45 +0000 Message-ID: In-Reply-To: <4ecfa306-a374-93f6-4e66-be62895ae4f7@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: <92CA1A604E01A842AC5098FE117172E4@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: 2022/03/17 01:49:00 #18989990 X-KSMG-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org 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: Krasnov Arseniy Vladimirovich --- v2 -> v3: 1) Use 'fprintf()' instead of 'perror()' where 'errno' variable is not affected. 2) Print 'read()' overhead. tools/testing/vsock/vsock_test.c | 84 ++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c index 2a3638c0a008..f5498de6751d 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 +392,84 @@ 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 (errno != EAGAIN) { + perror("EAGAIN expected"); + exit(EXIT_FAILURE); + } + + if (read(fd, &dummy, sizeof(dummy)) != -1) { + fprintf(stderr, + "expected 'dummy' read(2) failure\n"); + 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), %lu > %i ns\n", + read_overhead_ns, READ_OVERHEAD_NSEC); + 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 +510,11 @@ 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, + }, {}, };