From patchwork Wed Dec 18 18:07:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Garzarella X-Patchwork-Id: 11301585 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 074B46C1 for ; Wed, 18 Dec 2019 18:07:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CFEF32467B for ; Wed, 18 Dec 2019 18:07:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Eib+zEJ5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727663AbfLRSH5 (ORCPT ); Wed, 18 Dec 2019 13:07:57 -0500 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:37871 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727652AbfLRSH4 (ORCPT ); Wed, 18 Dec 2019 13:07:56 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1576692475; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7lW+cxoZMuu0TO4yVVOLW4Vw9qRm3Vps7ty8G8tFB/M=; b=Eib+zEJ584HaGpZVUfoip756On+DDGWncFxDTeekFqily6VFbmtcwo2i8PE74KkUug/WvH PpliimjlAgVnIuneZFv/jxggm7B4l2+bZYsnl3fOMDv//3jmHjsti2iP3FBrXmDDwmg7CA atTUIkNkTFzP1sUHw34EySJxNyvr2bY= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-51-MStQOSH1NAmxIEs9wBUUZw-1; Wed, 18 Dec 2019 13:07:50 -0500 X-MC-Unique: MStQOSH1NAmxIEs9wBUUZw-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1BFFC8C3ECB; Wed, 18 Dec 2019 18:07:49 +0000 (UTC) Received: from steredhat.redhat.com (ovpn-117-218.ams2.redhat.com [10.36.117.218]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3A83B5D9E5; Wed, 18 Dec 2019 18:07:44 +0000 (UTC) From: Stefano Garzarella To: davem@davemloft.net Cc: Jorgen Hansen , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Stefan Hajnoczi , Dexuan Cui , netdev@vger.kernel.org, virtualization@lists.linux-foundation.org, Stefano Garzarella Subject: [PATCH net-next v3 08/11] vsock_test: wait for the remote to close the connection Date: Wed, 18 Dec 2019 19:07:05 +0100 Message-Id: <20191218180708.120337-9-sgarzare@redhat.com> In-Reply-To: <20191218180708.120337-1-sgarzare@redhat.com> References: <20191218180708.120337-1-sgarzare@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Before check if a send returns -EPIPE, we need to make sure the connection is closed. To do that, we use epoll API to wait EPOLLRDHUP or EPOLLHUP events on the socket. Reported-by: Jorgen Hansen Signed-off-by: Stefano Garzarella --- v3: - removed unnecessary control_expectln("CLOSED") [Stefan] --- tools/testing/vsock/util.c | 39 ++++++++++++++++++++++++++++++++ tools/testing/vsock/util.h | 1 + tools/testing/vsock/vsock_test.c | 12 ++++++---- 3 files changed, 48 insertions(+), 4 deletions(-) diff --git a/tools/testing/vsock/util.c b/tools/testing/vsock/util.c index 6026ef3ce512..b132c96c87fc 100644 --- a/tools/testing/vsock/util.c +++ b/tools/testing/vsock/util.c @@ -13,6 +13,8 @@ #include #include #include +#include +#include #include "timeout.h" #include "control.h" @@ -44,6 +46,43 @@ unsigned int parse_cid(const char *str) return n; } +/* Wait for the remote to close the connection */ +void vsock_wait_remote_close(int fd) +{ + struct epoll_event ev; + int epollfd, nfds; + + epollfd = epoll_create1(0); + if (epollfd == -1) { + perror("epoll_create1"); + exit(EXIT_FAILURE); + } + + ev.events = EPOLLRDHUP | EPOLLHUP; + ev.data.fd = fd; + if (epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &ev) == -1) { + perror("epoll_ctl"); + exit(EXIT_FAILURE); + } + + nfds = epoll_wait(epollfd, &ev, 1, TIMEOUT * 1000); + if (nfds == -1) { + perror("epoll_wait"); + exit(EXIT_FAILURE); + } + + if (nfds == 0) { + fprintf(stderr, "epoll_wait timed out\n"); + exit(EXIT_FAILURE); + } + + assert(nfds == 1); + assert(ev.events & (EPOLLRDHUP | EPOLLHUP)); + assert(ev.data.fd == fd); + + close(epollfd); +} + /* Connect to and return the file descriptor. */ int vsock_stream_connect(unsigned int cid, unsigned int port) { diff --git a/tools/testing/vsock/util.h b/tools/testing/vsock/util.h index 4df12e4b5ebe..331e945f3ae6 100644 --- a/tools/testing/vsock/util.h +++ b/tools/testing/vsock/util.h @@ -36,6 +36,7 @@ unsigned int parse_cid(const char *str); int vsock_stream_connect(unsigned int cid, unsigned int port); int vsock_stream_accept(unsigned int cid, unsigned int port, struct sockaddr_vm *clientaddrp); +void vsock_wait_remote_close(int fd); void send_byte(int fd, int expected_ret, int flags); void recv_byte(int fd, int expected_ret, int flags); void run_tests(const struct test_case *test_cases, diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c index fae8ddc3ef72..629d7ce58202 100644 --- a/tools/testing/vsock/vsock_test.c +++ b/tools/testing/vsock/vsock_test.c @@ -66,7 +66,6 @@ static void test_stream_client_close_client(const struct test_opts *opts) send_byte(fd, 1, 0); close(fd); - control_writeln("CLOSED"); } static void test_stream_client_close_server(const struct test_opts *opts) @@ -79,7 +78,10 @@ static void test_stream_client_close_server(const struct test_opts *opts) exit(EXIT_FAILURE); } - control_expectln("CLOSED"); + /* Wait for the remote to close the connection, before check + * -EPIPE error on send. + */ + vsock_wait_remote_close(fd); send_byte(fd, -EPIPE, 0); recv_byte(fd, 1, 0); @@ -97,7 +99,10 @@ static void test_stream_server_close_client(const struct test_opts *opts) exit(EXIT_FAILURE); } - control_expectln("CLOSED"); + /* Wait for the remote to close the connection, before check + * -EPIPE error on send. + */ + vsock_wait_remote_close(fd); send_byte(fd, -EPIPE, 0); recv_byte(fd, 1, 0); @@ -117,7 +122,6 @@ static void test_stream_server_close_server(const struct test_opts *opts) send_byte(fd, 1, 0); close(fd); - control_writeln("CLOSED"); } /* With the standard socket sizes, VMCI is able to support about 100