From nobody Fri May 17 03:00:51 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=virtuozzo.com ARC-Seal: i=1; a=rsa-sha256; t=1564048196; cv=none; d=zoho.com; s=zohoarc; b=fy81zTL+ortD+ccgLN5wjAJsAyIYB2w+VdQSj+wttETjBic5rlGKuJLEdhQRIk9EkqxeJLwW0nB8zpzVFKQ2YJc7hA7Vp1TypWnAWWht4GhTRQEYEH/85b4oCxM5Bh7fSjhby2m2vWqLalht7uW8+KTYoV4YH8nX9Oy2W0s5tWg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1564048196; h=Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:Sender:Subject:To:ARC-Authentication-Results; bh=5vqj6NszSOXvIp+Py+3hsVAGIbArI/Lei4oTBIj/0uI=; b=UiErhRsEi12eHKV8Imtj38mVivlpD1DkM9bZ3AYJ3ajwghy/M1rlBEE9TbxlQ3ayABIlOBpNkXaUGWGZXFNLSadSkWYnRsd03grwiUjsJSe5G/Gjdv6HlKUsZGVD7kcoEfrt0m8WRmoay2BbcBIjqcrYgnD4hTV6rFETNwN7Dds= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1564048195959490.35248699325564; Thu, 25 Jul 2019 02:49:55 -0700 (PDT) Received: from localhost ([::1]:57742 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hqaNm-0001sk-Kb for importer@patchew.org; Thu, 25 Jul 2019 05:49:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43491) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hqaNc-0001UY-PW for qemu-devel@nongnu.org; Thu, 25 Jul 2019 05:49:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hqaNb-00076L-NH for qemu-devel@nongnu.org; Thu, 25 Jul 2019 05:49:44 -0400 Received: from relay.sw.ru ([185.231.240.75]:45328) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hqaNb-00075I-Fw for qemu-devel@nongnu.org; Thu, 25 Jul 2019 05:49:43 -0400 Received: from [10.94.3.0] (helo=kvm.qa.sw.ru) by relay.sw.ru with esmtp (Exim 4.92) (envelope-from ) id 1hqaNX-0001kf-CU; Thu, 25 Jul 2019 12:49:39 +0300 From: Vladimir Sementsov-Ogievskiy To: qemu-devel@nongnu.org Date: Thu, 25 Jul 2019 12:49:37 +0300 Message-Id: <20190725094937.32454-1-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.18.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 185.231.240.75 Subject: [Qemu-devel] [PATCH v4] 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: vsementsov@virtuozzo.com, berrange@redhat.com, armbru@redhat.com, kraxel@redhat.com, den@openvz.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" It's needed to provide keepalive for nbd client to track server availability. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Markus Armbruster --- Notes: v4; [by Markus's comments] =20 - use "passive socket" term - move check for not enabled keep_alive to inet_listen_saddr() =20 v3: [by Markus's comments] =20 - Fix commit subject - Add comment to qapi and restrict server-side connections - Fix s/"keep-alive=3D"/",keep-alive"/ 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 fc81d8d5e8..32375f3a36 100644 --- a/qapi/sockets.json +++ b/qapi/sockets.json @@ -53,6 +53,9 @@ # # @ipv6: whether to accept IPv6 addresses, default try both IPv4 and IPv6 # +# @keep-alive: enable keep-alive when connecting to this socket. Not suppo= rted +# 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' } } =20 ## # @UnixSocketAddress: diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c index a5092dbd12..35d2b7f773 100644 --- a/util/qemu-sockets.c +++ b/util/qemu-sockets.c @@ -219,6 +219,12 @@ static int inet_listen_saddr(InetSocketAddress *saddr, bool socket_created =3D false; Error *err =3D NULL; =20 + if (saddr->keep_alive) { + error_setg(errp, "keep-alive options 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, Error= **errp) } =20 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; } =20 @@ -653,6 +672,15 @@ int inet_parse(InetSocketAddress *addr, const char *st= r, 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 --=20 2.18.0