From patchwork Mon Jul 25 08:11:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseniy Krasnov X-Patchwork-Id: 12927853 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 CAE3ACCA473 for ; Mon, 25 Jul 2022 08:11:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233710AbiGYIL4 (ORCPT ); Mon, 25 Jul 2022 04:11:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60952 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229620AbiGYILz (ORCPT ); Mon, 25 Jul 2022 04:11:55 -0400 Received: from mail.sberdevices.ru (mail.sberdevices.ru [45.89.227.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B56FB13CE5; Mon, 25 Jul 2022 01:11:53 -0700 (PDT) Received: from s-lin-edge02.sberdevices.ru (localhost [127.0.0.1]) by mail.sberdevices.ru (Postfix) with ESMTP id 031455FD0B; Mon, 25 Jul 2022 11:11:52 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1658736712; bh=6XZQtWxl9pDfCffcJW86vuM5/TgZ8YvSCAXMREbLKGk=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=eYz29V8S80mjj6Cu3OXN/JPf+FO5amHW3qjlJXQnM1fB7txMjH/sIdNnoTMm68HTK SVprIGXmR+/grmDp/MmjWirkAnciVVILfoG34W2XtG3BlHMFJlEPPOLqBX97mu4w6k Ieqz//IqdKPi/0vjlqDnyetGnixehtAzwccq0sG4an0GbNGDg//nb8N10ocowWohoR GirePWBGl9lgBiro/jEOM4sCiCyEiOXNaD8YmhkJPqcSv36Tia4LN5M9BtpZZaAY5h d0cF2EP02CP8+rVFVGMTSE5rkr9KUX+N/GMHoSvnugjjZehQ9fraGe1M3koK8JdCnQ prqlLVwOlgmGQ== Received: from S-MS-EXCH01.sberdevices.ru (S-MS-EXCH01.sberdevices.ru [172.16.1.4]) by mail.sberdevices.ru (Postfix) with ESMTP; Mon, 25 Jul 2022 11:11:51 +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 , Arseniy Krasnov , Krasnov Arseniy CC: "virtualization@lists.linux-foundation.org" , "linux-kernel@vger.kernel.org" , "linux-hyperv@vger.kernel.org" , "netdev@vger.kernel.org" , "kvm@vger.kernel.org" , kernel Subject: [RFC PATCH v2 8/9] virtio/vsock: check SO_RCVLOWAT before wake up reader Thread-Topic: [RFC PATCH v2 8/9] virtio/vsock: check SO_RCVLOWAT before wake up reader Thread-Index: AQHYn/4msdZhsnhzrEat7NUwhk8xxA== Date: Mon, 25 Jul 2022 08:11:32 +0000 Message-ID: <821eea3a-f449-c889-4c43-6665e9421d95@sberdevices.ru> In-Reply-To: <19e25833-5f5c-f9b9-ac0f-1945ea17638d@sberdevices.ru> 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-ID: <12F1E4F7463A144DB443C3811EAC5452@sberdevices.ru> 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: 2022/07/25 03:52:00 #19956163 X-KSMG-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-State: RFC This adds extra condition to wake up data reader: do it only when number of readable bytes >= SO_RCVLOWAT. Otherwise, there is no sense to kick user,because it will wait until SO_RCVLOWAT bytes will be dequeued. Signed-off-by: Arseniy Krasnov --- net/vmw_vsock/virtio_transport_common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c index 8f6356ebcdd1..35863132f4f1 100644 --- a/net/vmw_vsock/virtio_transport_common.c +++ b/net/vmw_vsock/virtio_transport_common.c @@ -1081,7 +1081,7 @@ virtio_transport_recv_connected(struct sock *sk, switch (le16_to_cpu(pkt->hdr.op)) { case VIRTIO_VSOCK_OP_RW: virtio_transport_recv_enqueue(vsk, pkt); - sk->sk_data_ready(sk); + vsock_data_ready(sk); return err; case VIRTIO_VSOCK_OP_CREDIT_REQUEST: virtio_transport_send_credit_update(vsk);