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=ham 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 2CAB2C3A589 for ; Thu, 15 Aug 2019 18:34:53 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 076C12084D for ; Thu, 15 Aug 2019 18:34:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 076C12084D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46064 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hyKaJ-0004vL-P5 for qemu-devel@archiver.kernel.org; Thu, 15 Aug 2019 14:34:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37333) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hyKWW-0002m8-TI for qemu-devel@nongnu.org; Thu, 15 Aug 2019 14:30:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hyKWU-0001JJ-Ak for qemu-devel@nongnu.org; Thu, 15 Aug 2019 14:30:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35056) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hyKWU-0001I8-1a for qemu-devel@nongnu.org; Thu, 15 Aug 2019 14:30:54 -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 63A1AC08E2BD; Thu, 15 Aug 2019 18:30:53 +0000 (UTC) Received: from blue.redhat.com (ovpn-117-22.phx2.redhat.com [10.3.117.22]) by smtp.corp.redhat.com (Postfix) with ESMTP id 21BFE8388F; Thu, 15 Aug 2019 18:30:41 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Date: Thu, 15 Aug 2019 13:30:31 -0500 Message-Id: <20190815183039.4264-2-eblake@redhat.com> In-Reply-To: <20190815183039.4264-1-eblake@redhat.com> References: <20190815183039.4264-1-eblake@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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 [10.5.110.31]); Thu, 15 Aug 2019 18:30:53 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 1/9] qapi: Add InetSocketAddress member keep-alive X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vladimir Sementsov-Ogievskiy , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , Markus Armbruster , Gerd Hoffmann Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Vladimir Sementsov-Ogievskiy It's needed to provide keepalive for nbd client to track server availability. Signed-off-by: Vladimir Sementsov-Ogievskiy Message-Id: <20190725094937.32454-1-vsementsov@virtuozzo.com> Reviewed-by: Markus Armbruster Acked-by: Daniel P. Berrang=C3=A9 [eblake: Fix error message typo] Signed-off-by: Eric Blake --- qapi/sockets.json | 6 +++++- util/qemu-sockets.c | 28 ++++++++++++++++++++++++++++ 2 files changed, 33 insertions(+), 1 deletion(-) diff --git a/qapi/sockets.json b/qapi/sockets.json index fc81d8d5e8b9..32375f3a361e 100644 --- a/qapi/sockets.json +++ b/qapi/sockets.json @@ -53,6 +53,9 @@ # # @ipv6: whether to accept IPv6 addresses, default try both IPv4 and IPv= 6 # +# @keep-alive: enable keep-alive when connecting to this socket. Not sup= ported +# for passive sockets. (Since 4.2) +# # Since: 1.3 ## { 'struct': 'InetSocketAddress', @@ -61,7 +64,8 @@ '*numeric': 'bool', '*to': 'uint16', '*ipv4': 'bool', - '*ipv6': 'bool' } } + '*ipv6': 'bool', + '*keep-alive': 'bool' } } ## # @UnixSocketAddress: diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c index a5092dbd12e7..e3a1666578d9 100644 --- a/util/qemu-sockets.c +++ b/util/qemu-sockets.c @@ -219,6 +219,12 @@ static int inet_listen_saddr(InetSocketAddress *sadd= r, bool socket_created =3D false; Error *err =3D NULL; + if (saddr->keep_alive) { + error_setg(errp, "keep-alive option is not supported for passive= " + "sockets"); + return -1; + } + memset(&ai,0, sizeof(ai)); ai.ai_flags =3D AI_PASSIVE; if (saddr->has_numeric && saddr->numeric) { @@ -458,6 +464,19 @@ int inet_connect_saddr(InetSocketAddress *saddr, Err= or **errp) } freeaddrinfo(res); + + if (saddr->keep_alive) { + int val =3D 1; + int ret =3D qemu_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, + &val, sizeof(val)); + + if (ret < 0) { + error_setg_errno(errp, errno, "Unable to set KEEPALIVE"); + close(sock); + return -1; + } + } + return sock; } @@ -653,6 +672,15 @@ int inet_parse(InetSocketAddress *addr, const char *= str, Error **errp) } addr->has_ipv6 =3D true; } + begin =3D strstr(optstr, ",keep-alive"); + if (begin) { + if (inet_parse_flag("keep-alive", begin + strlen(",keep-alive"), + &addr->keep_alive, errp) < 0) + { + return -1; + } + addr->has_keep_alive =3D true; + } return 0; } --=20 2.20.1