From patchwork Tue Mar 23 13:13:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseny Krasnov X-Patchwork-Id: 12157827 X-Patchwork-Delegate: kuba@kernel.org 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=-19.0 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, 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 850DCC433E5 for ; Tue, 23 Mar 2021 13:15:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 44387619BF for ; Tue, 23 Mar 2021 13:15:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231635AbhCWNOa (ORCPT ); Tue, 23 Mar 2021 09:14:30 -0400 Received: from mx13.kaspersky-labs.com ([91.103.66.164]:49053 "EHLO mx13.kaspersky-labs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231684AbhCWNNo (ORCPT ); Tue, 23 Mar 2021 09:13:44 -0400 Received: from relay13.kaspersky-labs.com (unknown [127.0.0.10]) by relay13.kaspersky-labs.com (Postfix) with ESMTP id 536E85213CF; Tue, 23 Mar 2021 16:13:42 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kaspersky.com; s=mail202102; t=1616505222; bh=soHyxPut5Lbj6jPtowirynLrFFR6Pw/0R+7EE/cjPFE=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=tbWC56Co2AxA1mbOeTVBDT7D51BiojG90flTyXg59MrA2PCryVM+z79Bv4nW6FW2I Tu1MIfLIZkap/2hX8JL78MZrun7E5fYOsJezRVbxajaeYhKsH33Sv4ScZnut7JvDes NaMUgfg9YvU58FKsV38tx9tQ/eyifhk0cEhDmqM4LqKlDMuSchth1aL7lZfFE8Y+73 1VUNkOo3h2iVhtHM06fMhAgaBYZPO8zlTGVF+NxK+hDLXSYYsHRdocDGrpKUIWgFtA hx0uTYND9BXnuohOvipqfiR5UbxTbS2NVncr76fjzkmGud6RSK7DzPmyqFFjj45fWu tU3MOXX9txYlQ== 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 mailhub13.kaspersky-labs.com (Postfix) with ESMTPS id 0531E5213DF; Tue, 23 Mar 2021 16:13:42 +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 15.1.2176.2; Tue, 23 Mar 2021 16:13:41 +0300 From: Arseny Krasnov To: Stefan Hajnoczi , Stefano Garzarella , "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , Jorgen Hansen , Norbert Slusarek , Andra Paraschiv , Colin Ian King , Jeff Vander Stoep , Alexander Popov CC: , , , , , , Subject: [RFC PATCH v7 14/22] virtio/vsock: rest of SOCK_SEQPACKET support Date: Tue, 23 Mar 2021 16:13:29 +0300 Message-ID: <20210323131332.2461409-1-arseny.krasnov@kaspersky.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210323130716.2459195-1-arseny.krasnov@kaspersky.com> References: <20210323130716.2459195-1-arseny.krasnov@kaspersky.com> MIME-Version: 1.0 X-Originating-IP: [10.64.64.121] X-ClientProxiedBy: hqmailmbx3.avp.ru (10.64.67.243) 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: 03/23/2021 12:55:25 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 10 X-KSE-AntiSpam-Info: Lua profiles 162595 [Mar 23 2021] X-KSE-AntiSpam-Info: LuaCore: 437 437 85ecb8eec06a7bf2f475f889e784f42bce7b4445 X-KSE-AntiSpam-Info: Version: 5.9.20.0 X-KSE-AntiSpam-Info: Envelope from: arseny.krasnov@kaspersky.com X-KSE-AntiSpam-Info: {Prob_from_in_msgid} X-KSE-AntiSpam-Info: {Tracking_from_domain_doesnt_match_to} X-KSE-AntiSpam-Info: d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;arseniy-pc.avp.ru:7.1.1;127.0.0.199:7.1.2;kaspersky.com:7.1.1 X-KSE-AntiSpam-Info: Rate: 10 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: 03/23/2021 12:58:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 23.03.2021 11:46:00 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: 2021/03/23 11:43:00 X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, bases: 2021/03/23 11:40:00 #16480199 X-KLMS-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC This adds rest of logic for SEQPACKET: 1) SEQPACKET specific functions which send SEQ_BEGIN/SEQ_END. Note that both functions may sleep to wait enough space for SEQPACKET header. 2) SEQ_BEGIN/SEQ_END in TAP packet capture. 3) Send SHUTDOWN on socket close for SEQPACKET type. 4) Set SEQPACKET packet type during send. 5) Set MSG_EOR in flags for SEQPACKET during send. 6) 'seqpacket_allow' flag to virtio transport. Signed-off-by: Arseny Krasnov --- v6 -> v7: In 'virtio_transport_seqpacket_enqueue()', 'next_tx_msg_id' is updated in both cases when message send successfully or error occured. include/linux/virtio_vsock.h | 7 ++ net/vmw_vsock/virtio_transport_common.c | 88 ++++++++++++++++++++++++- 2 files changed, 93 insertions(+), 2 deletions(-) diff --git a/include/linux/virtio_vsock.h b/include/linux/virtio_vsock.h index 0e3aa395c07c..ab5f56fd7251 100644 --- a/include/linux/virtio_vsock.h +++ b/include/linux/virtio_vsock.h @@ -22,6 +22,7 @@ struct virtio_vsock_seq_state { u32 user_read_seq_len; u32 user_read_copied; u32 curr_rx_msg_id; + u32 next_tx_msg_id; }; /* Per-socket state (accessed via vsk->trans) */ @@ -76,6 +77,8 @@ struct virtio_transport { /* Takes ownership of the packet */ int (*send_pkt)(struct virtio_vsock_pkt *pkt); + + bool seqpacket_allow; }; ssize_t @@ -89,6 +92,10 @@ virtio_transport_dgram_dequeue(struct vsock_sock *vsk, size_t len, int flags); int +virtio_transport_seqpacket_enqueue(struct vsock_sock *vsk, + struct msghdr *msg, + size_t len); +int virtio_transport_seqpacket_dequeue(struct vsock_sock *vsk, struct msghdr *msg, int flags, diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c index bfe0d7026bf8..01a56c7da8bd 100644 --- a/net/vmw_vsock/virtio_transport_common.c +++ b/net/vmw_vsock/virtio_transport_common.c @@ -139,6 +139,8 @@ static struct sk_buff *virtio_transport_build_skb(void *opaque) break; case VIRTIO_VSOCK_OP_CREDIT_UPDATE: case VIRTIO_VSOCK_OP_CREDIT_REQUEST: + case VIRTIO_VSOCK_OP_SEQ_BEGIN: + case VIRTIO_VSOCK_OP_SEQ_END: hdr->op = cpu_to_le16(AF_VSOCK_OP_CONTROL); break; default: @@ -187,7 +189,12 @@ static int virtio_transport_send_pkt_info(struct vsock_sock *vsk, struct virtio_vsock_pkt *pkt; u32 pkt_len = info->pkt_len; - info->type = VIRTIO_VSOCK_TYPE_STREAM; + info->type = virtio_transport_get_type(sk_vsock(vsk)); + + if (info->type == VIRTIO_VSOCK_TYPE_SEQPACKET && + info->msg && + info->msg->msg_flags & MSG_EOR) + info->flags |= VIRTIO_VSOCK_RW_EOR; t_ops = virtio_transport_get_ops(vsk); if (unlikely(!t_ops)) @@ -401,6 +408,43 @@ virtio_transport_stream_do_dequeue(struct vsock_sock *vsk, return err; } +static int virtio_transport_seqpacket_send_ctrl(struct vsock_sock *vsk, + int type, + size_t len, + int flags) +{ + struct virtio_vsock_sock *vvs = vsk->trans; + struct virtio_vsock_pkt_info info = { + .op = type, + .vsk = vsk, + .pkt_len = sizeof(struct virtio_vsock_seq_hdr) + }; + + struct virtio_vsock_seq_hdr seq_hdr = { + .msg_id = cpu_to_le32(vvs->seq_state.next_tx_msg_id), + .msg_len = cpu_to_le32(len) + }; + + struct kvec seq_hdr_kiov = { + .iov_base = (void *)&seq_hdr, + .iov_len = sizeof(struct virtio_vsock_seq_hdr) + }; + + struct msghdr msg = {0}; + + //XXX: do we need 'vsock_transport_send_notify_data' pointer? + if (vsock_wait_space(sk_vsock(vsk), + sizeof(struct virtio_vsock_seq_hdr), + flags, NULL)) + return -1; + + iov_iter_kvec(&msg.msg_iter, WRITE, &seq_hdr_kiov, 1, sizeof(seq_hdr)); + + info.msg = &msg; + + return virtio_transport_send_pkt_info(vsk, &info); +} + static inline void virtio_transport_remove_pkt(struct virtio_vsock_pkt *pkt) { list_del(&pkt->list); @@ -595,6 +639,46 @@ virtio_transport_seqpacket_dequeue(struct vsock_sock *vsk, } EXPORT_SYMBOL_GPL(virtio_transport_seqpacket_dequeue); +int +virtio_transport_seqpacket_enqueue(struct vsock_sock *vsk, + struct msghdr *msg, + size_t len) +{ + int written = -1; + + if (msg->msg_iter.iov_offset == 0) { + /* Send SEQBEGIN. */ + if (virtio_transport_seqpacket_send_ctrl(vsk, + VIRTIO_VSOCK_OP_SEQ_BEGIN, + len, + msg->msg_flags) < 0) + goto out; + } + + written = virtio_transport_stream_enqueue(vsk, msg, len); + + if (written < 0) + goto out; + + if (msg->msg_iter.count == 0) { + /* Send SEQEND. */ + virtio_transport_seqpacket_send_ctrl(vsk, + VIRTIO_VSOCK_OP_SEQ_END, + 0, + msg->msg_flags); + } +out: + /* Update next id on error or message transmission done. */ + if (written < 0 || msg->msg_iter.count == 0) { + struct virtio_vsock_sock *vvs = vsk->trans; + + vvs->seq_state.next_tx_msg_id++; + } + + return written; +} +EXPORT_SYMBOL_GPL(virtio_transport_seqpacket_enqueue); + int virtio_transport_dgram_dequeue(struct vsock_sock *vsk, struct msghdr *msg, @@ -1014,7 +1098,7 @@ void virtio_transport_release(struct vsock_sock *vsk) struct sock *sk = &vsk->sk; bool remove_sock = true; - if (sk->sk_type == SOCK_STREAM) + if (sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_SEQPACKET) remove_sock = virtio_transport_close(vsk); list_for_each_entry_safe(pkt, tmp, &vvs->rx_queue, list) {