From patchwork Mon Jul 26 16:31:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseny Krasnov X-Patchwork-Id: 12400073 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=-19.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 4FFABC4338F for ; Mon, 26 Jul 2021 16:32:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3AC1760234 for ; Mon, 26 Jul 2021 16:32:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239388AbhGZPwA (ORCPT ); Mon, 26 Jul 2021 11:52:00 -0400 Received: from mx12.kaspersky-labs.com ([91.103.66.155]:30779 "EHLO mx12.kaspersky-labs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233056AbhGZPvz (ORCPT ); Mon, 26 Jul 2021 11:51:55 -0400 Received: from relay12.kaspersky-labs.com (unknown [127.0.0.10]) by relay12.kaspersky-labs.com (Postfix) with ESMTP id D670F76F1F; Mon, 26 Jul 2021 19:32:20 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kaspersky.com; s=mail202102; t=1627317140; bh=1nfwqB6HCexuAjnK/ArPrVqt48gRoNbKKsoOEwcBINA=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=nMmqMhOVMFL1WdvJzV6oVhOiCgjjprAfuF8CImjhSJRTdQpc7l/JlZa2/UxrJxEIA CKVsjKMnhnQUfHvIhBKT6LKZlsjUP/k+IWB1ZJQl54B5a+XFRLF0Jc7OsGRx9t0BzD 3wi8ADdWLSim6A+5slCDQNPeHpuxAld3Q/R2k70w7oqb8WQFZHDNue7G/C4a/tnMbF vUQYTVqsVNrMB7x2rZdAY7iFa7oY1Dn6juzMU7K+4z0LtuxYWj7AxCuzyTWLq2jpyt PowyLCYGs9WW2FrLBqUDB+Tq2DCQGanCPWaqu22X6iZHJrpgBRhVOQaHOaadijce5y DY7KJTn+Wokmw== Received: from mail-hq2.kaspersky.com (unknown [91.103.66.206]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (Client CN "mail-hq2.kaspersky.com", Issuer "Kaspersky MailRelays CA G3" (verified OK)) by mailhub12.kaspersky-labs.com (Postfix) with ESMTPS id CC34376F3D; Mon, 26 Jul 2021 19:32:19 +0300 (MSK) Received: from arseniy-pc.avp.ru (10.64.64.121) by hqmailmbx3.avp.ru (10.64.67.243) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Mon, 26 Jul 2021 19:32:19 +0300 From: Arseny Krasnov To: Stefan Hajnoczi , Stefano Garzarella , "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , Arseny Krasnov , Colin Ian King , Andra Paraschiv , Norbert Slusarek CC: , , , , Subject: [RFC PATCH v1 0/7] virtio/vsock: introduce MSG_EOR flag for SEQPACKET Date: Mon, 26 Jul 2021 19:31:33 +0300 Message-ID: <20210726163137.2589102-1-arseny.krasnov@kaspersky.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.64.64.121] X-ClientProxiedBy: hqmailmbx2.avp.ru (10.64.67.242) To hqmailmbx3.avp.ru (10.64.67.243) X-KSE-ServerInfo: hqmailmbx3.avp.ru, 9 X-KSE-AntiSpam-Interceptor-Info: scan successful X-KSE-AntiSpam-Version: 5.9.20, Database issued on: 07/26/2021 16:13:33 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 0 X-KSE-AntiSpam-Info: Lua profiles 165254 [Jul 26 2021] X-KSE-AntiSpam-Info: Version: 5.9.20.0 X-KSE-AntiSpam-Info: Envelope from: arseny.krasnov@kaspersky.com X-KSE-AntiSpam-Info: LuaCore: 449 449 5db59deca4a4f5e6ea34a93b13bc730e229092f4 X-KSE-AntiSpam-Info: {Tracking_from_domain_doesnt_match_to} X-KSE-AntiSpam-Info: 127.0.0.199:7.1.2;arseniy-pc.avp.ru:7.1.1;kaspersky.com:7.1.1;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1 X-KSE-AntiSpam-Info: Rate: 0 X-KSE-AntiSpam-Info: Status: not_detected X-KSE-AntiSpam-Info: Method: none X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Deterministic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 07/26/2021 16:15:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 26.07.2021 14:57:00 X-KSE-BulkMessagesFiltering-Scan-Result: InTheLimit X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-BulkMessagesFiltering-Scan-Result: InTheLimit X-KLMS-Rule-ID: 52 X-KLMS-Message-Action: clean X-KLMS-AntiSpam-Status: not scanned, disabled by settings X-KLMS-AntiSpam-Interceptor-Info: not scanned X-KLMS-AntiPhishing: Clean, bases: 2021/07/26 14:52:00 X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, bases: 2021/07/26 14:01:00 #16958312 X-KLMS-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-State: RFC This patchset implements support of MSG_EOR bit for SEQPACKET AF_VSOCK sockets over virtio transport. Idea is to distinguish concepts of 'messages' and 'records'. Message is result of sending calls: 'write()', 'send()', 'sendmsg()' etc. It has fixed maximum length, and it bounds are visible using return from receive calls: 'read()', 'recv()', 'recvmsg()' etc. Current implementation based on message definition above. Record has unlimited length, it consists of multiple message, and bounds of record are visible via MSG_EOR flag returned from 'recvmsg()' call. Sender passes MSG_EOR to sending system call and receiver will see MSG_EOR when corresponding message will be processed. To support MSG_EOR new bit was added along with existing 'VIRTIO_VSOCK_SEQ_EOR': 'VIRTIO_VSOCK_SEQ_EOM'(end-of-message) - now it works in the same way as 'VIRTIO_VSOCK_SEQ_EOR'. But 'VIRTIO_VSOCK_SEQ_EOR' is used to mark 'MSG_EOR' bit passed from userspace. This patchset includes simple test for MSG_EOR. Also i've added new vsock test for '-EAGAIN' receive result. Arseny Krasnov(7): virtio/vsock: add 'VIRTIO_VSOCK_SEQ_EOM' bit vsock: rename implementation from 'record' to 'message' vhost/vsock: support MSG_EOR bit processing virito/vsock: support MSG_EOR bit processing af_vsock: rename variables in receive loop vsock_test: update message bounds test for MSG_EOR vsock_test: 'SO_RCVTIMEO' test for SEQPACKET drivers/vhost/vsock.c | 28 +++++++---- include/uapi/linux/virtio_vsock.h | 1 + net/vmw_vsock/af_vsock.c | 10 ++-- net/vmw_vsock/virtio_transport_common.c | 23 +++++---- tools/testing/vsock/vsock_test.c | 57 ++++++++++++++++++++++- 5 files changed, 96 insertions(+), 23 deletions(-) Signed-off-by: Arseny Krasnov