From patchwork Wed Aug 3 14:03:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseniy Krasnov X-Patchwork-Id: 12935538 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 5CA84C19F2C for ; Wed, 3 Aug 2022 14:04:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238487AbiHCOEQ (ORCPT ); Wed, 3 Aug 2022 10:04:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57372 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236494AbiHCOEP (ORCPT ); Wed, 3 Aug 2022 10:04:15 -0400 Received: from mail.sberdevices.ru (mail.sberdevices.ru [45.89.227.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D0332F003; Wed, 3 Aug 2022 07:04:13 -0700 (PDT) Received: from s-lin-edge02.sberdevices.ru (localhost [127.0.0.1]) by mail.sberdevices.ru (Postfix) with ESMTP id 116565FD2E; Wed, 3 Aug 2022 17:04:12 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1659535452; bh=6XZQtWxl9pDfCffcJW86vuM5/TgZ8YvSCAXMREbLKGk=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=HGsGwwldJ5JnGyr5nIzZMkNbnQvF6r2IxyQl45jcOp5iFbbHMoJBoDEYFxJ0YDM7Q zMUEnauI5wEb98/DEFRuCmz1twxbIpOP6gkBbjPNNqbPGsMr2RkFv0ppQm2uZQqVKQ US+VgwLAcUXj4vCkFYsTrkKNdMrbsas1yUCmE5P/tT30pR0pEO7wsZRDqYDMjhqCuo JPLtZcPQvIxv5C6BXcKydlHnkdn+yzfss8q6KQU+j2NlgLd1y/f3zuCocDoV0nKoYu z5TopP9mXas3/ONsLTExUGdUcOX7AIgzdiMPoYEhZPR9feTg4dbqLxRAS3MQf+clWB t02DRwRFk77Kw== Received: from S-MS-EXCH01.sberdevices.ru (S-MS-EXCH01.sberdevices.ru [172.16.1.4]) by mail.sberdevices.ru (Postfix) with ESMTP; Wed, 3 Aug 2022 17:04:11 +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 , VMware PV-Drivers Reviewers , Krasnov Arseniy , "Arseniy Krasnov" 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 Subject: [RFC PATCH v3 7/9] virtio/vsock: check SO_RCVLOWAT before wake up reader Thread-Topic: [RFC PATCH v3 7/9] virtio/vsock: check SO_RCVLOWAT before wake up reader Thread-Index: AQHYp0Hf6rlyzBtLk0aQZEnBg4ReJg== Date: Wed, 3 Aug 2022 14:03:58 +0000 Message-ID: In-Reply-To: <2ac35e2c-26a8-6f6d-2236-c4692600db9e@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: 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: 2022/08/03 07:41:00 #20041172 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 Reviewed-by: Stefano Garzarella --- 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);