From nobody Fri Apr 10 22:05:44 2026 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 088E6C25B0E for ; Fri, 19 Aug 2022 05:28:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346267AbiHSF2J (ORCPT ); Fri, 19 Aug 2022 01:28:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43814 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243197AbiHSF2F (ORCPT ); Fri, 19 Aug 2022 01:28:05 -0400 Received: from mail.sberdevices.ru (mail.sberdevices.ru [45.89.227.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 300AAE01FC; Thu, 18 Aug 2022 22:28:04 -0700 (PDT) Received: from s-lin-edge02.sberdevices.ru (localhost [127.0.0.1]) by mail.sberdevices.ru (Postfix) with ESMTP id 856AF5FD07; Fri, 19 Aug 2022 08:28:02 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1660886882; bh=xZcFr0g066QLn34YVo/DnULMO+Ugg56rtAsgSG8AMHo=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=DB+pr+ENO0x1YGOBXcl32mEz9ySWuycsdn6ARa3p/0E/aMxJh8ffXDZpeNOy8Y2YB ebMeLKGYxUcPKVDsz9P+34TY4E2cYpvKTZIDgoSPTH1LKq1Y/RSKVbYM5qdiTBhjWD 3bmJViJCa6JbzwQbdgj7sMil02xG3vb7m8V7xYGQoxBm4M8fWcdWsZ+6ayYFsNgTAK ugVLrepfBhjzeGfOYzVo8lNzAJyAeq6fRUvmGtTaRtiZCVPSJ8fmlwAzASa+KijlJW NADTgi8/c1+0QOpxM934CqLfebC7dZ7jhny1A4PLZzTaOct6t75PDHujWcYhDlOh/U fV6/v7yNw/m3A== Received: from S-MS-EXCH01.sberdevices.ru (S-MS-EXCH01.sberdevices.ru [172.16.1.4]) by mail.sberdevices.ru (Postfix) with ESMTP; Fri, 19 Aug 2022 08:28:00 +0300 (MSK) From: Arseniy Krasnov To: Stefano Garzarella , "David S. Miller" , "edumazet@google.com" , "Jakub Kicinski" , Paolo Abeni , "kys@microsoft.com" , "haiyangz@microsoft.com" , "sthemmin@microsoft.com" , "wei.liu@kernel.org" , Dexuan Cui , Stefan Hajnoczi , Bryan Tan , Vishnu Dasa , Krasnov Arseniy CC: "virtualization@lists.linux-foundation.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-hyperv@vger.kernel.org" , "kvm@vger.kernel.org" , kernel , VMware PV-Drivers Reviewers Subject: [PATCH net-next v4 2/9] hv_sock: disable SO_RCVLOWAT support Thread-Topic: [PATCH net-next v4 2/9] hv_sock: disable SO_RCVLOWAT support Thread-Index: AQHYs4xj57UzSxktpUO3tU97mRUOyg== Date: Fri, 19 Aug 2022 05:27:34 +0000 Message-ID: <1772ff39-a197-3f11-73b9-7deeb015e1ee@sberdevices.ru> In-Reply-To: Accept-Language: en-US, ru-RU Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.16.1.12] Content-Type: text/plain; charset="utf-8" Content-ID: <0CA4519B157AC347835CA4E08DEE6B12@sberdevices.ru> Content-Transfer-Encoding: quoted-printable 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: 2022/08/19 00:26:00 #20118704 X-KSMG-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For Hyper-V it is quiet difficult to support this socket option,due to transport internals, so disable it. Signed-off-by: Arseniy Krasnov Reviewed-by: Dexuan Cui Reviewed-by: Stefano Garzarella --- net/vmw_vsock/hyperv_transport.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/net/vmw_vsock/hyperv_transport.c b/net/vmw_vsock/hyperv_transp= ort.c index fd98229e3db3..59c3e2697069 100644 --- a/net/vmw_vsock/hyperv_transport.c +++ b/net/vmw_vsock/hyperv_transport.c @@ -815,6 +815,12 @@ int hvs_notify_send_post_enqueue(struct vsock_sock *vs= k, ssize_t written, return 0; } =20 +static +int hvs_set_rcvlowat(struct vsock_sock *vsk, int val) +{ + return -EOPNOTSUPP; +} + static struct vsock_transport hvs_transport =3D { .module =3D THIS_MODULE, =20 @@ -850,6 +856,7 @@ static struct vsock_transport hvs_transport =3D { .notify_send_pre_enqueue =3D hvs_notify_send_pre_enqueue, .notify_send_post_enqueue =3D hvs_notify_send_post_enqueue, =20 + .set_rcvlowat =3D hvs_set_rcvlowat }; =20 static bool hvs_check_transport(struct vsock_sock *vsk) --=20 2.25.1