From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7485AC19759 for ; Thu, 1 Aug 2019 15:26:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 47A0B20665 for ; Thu, 1 Aug 2019 15:26:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732707AbfHAP0N (ORCPT ); Thu, 1 Aug 2019 11:26:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58422 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731484AbfHAP0M (ORCPT ); Thu, 1 Aug 2019 11:26:12 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id EFE0B927BF; Thu, 1 Aug 2019 15:26:11 +0000 (UTC) Received: from steredhat.redhat.com (ovpn-117-63.ams2.redhat.com [10.36.117.63]) by smtp.corp.redhat.com (Postfix) with ESMTP id ED24A600D1; Thu, 1 Aug 2019 15:26:09 +0000 (UTC) From: Stefano Garzarella To: netdev@vger.kernel.org Cc: kvm@vger.kernel.org, Stefan Hajnoczi , Dexuan Cui , virtualization@lists.linux-foundation.org, "David S. Miller" , Jorgen Hansen , linux-kernel@vger.kernel.org Subject: [PATCH v2 08/11] VSOCK: add vsock_get_local_cid() test utility Date: Thu, 1 Aug 2019 17:25:38 +0200 Message-Id: <20190801152541.245833-9-sgarzare@redhat.com> In-Reply-To: <20190801152541.245833-1-sgarzare@redhat.com> References: <20190801152541.245833-1-sgarzare@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Thu, 01 Aug 2019 15:26:12 +0000 (UTC) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch adds utility to get local CID, useful to understand if we are in the host or guest. Signed-off-by: Stefano Garzarella --- tools/testing/vsock/util.c | 17 +++++++++++++++++ tools/testing/vsock/util.h | 1 + 2 files changed, 18 insertions(+) diff --git a/tools/testing/vsock/util.c b/tools/testing/vsock/util.c index d46a6e079b96..41b94495ecb1 100644 --- a/tools/testing/vsock/util.c +++ b/tools/testing/vsock/util.c @@ -13,6 +13,7 @@ #include #include #include +#include #include "timeout.h" #include "control.h" @@ -44,6 +45,22 @@ unsigned int parse_cid(const char *str) return n; } +/* Get the local CID */ +unsigned int vsock_get_local_cid(int fd) +{ + struct sockaddr_vm svm; + socklen_t svm_len = sizeof(svm); + + if (getsockname(fd, (struct sockaddr *) &svm, &svm_len)) { + perror("getsockname"); + exit(EXIT_FAILURE); + } + + assert(svm.svm_family == AF_VSOCK); + + return svm.svm_cid; +} + /* 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 fe524d393d67..379e02ab59bb 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); +unsigned int vsock_get_local_cid(int fd); void send_byte(int fd, int expected_ret); void recv_byte(int fd, int expected_ret); void run_tests(const struct test_case *test_cases, -- 2.20.1