From patchwork Sun Mar 7 18:03:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseny Krasnov X-Patchwork-Id: 12120939 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 48DA7C433E9 for ; Sun, 7 Mar 2021 18:03:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1F80F614A7 for ; Sun, 7 Mar 2021 18:03:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232688AbhCGSDZ (ORCPT ); Sun, 7 Mar 2021 13:03:25 -0500 Received: from mx13.kaspersky-labs.com ([91.103.66.164]:51243 "EHLO mx13.kaspersky-labs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232146AbhCGSDU (ORCPT ); Sun, 7 Mar 2021 13:03:20 -0500 Received: from relay13.kaspersky-labs.com (unknown [127.0.0.10]) by relay13.kaspersky-labs.com (Postfix) with ESMTP id 3976F521304; Sun, 7 Mar 2021 21:03:18 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kaspersky.com; s=mail202102; t=1615140198; bh=xA4tLScICE4WptwfeJ0r8BqaBcNvp6ScNYqK2vsJySo=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=hruHu8eeCxJvekJa8fjCr7u83yHfTZN//yGOMn3EJ684naU2ong4act8KbnEzDKWB 9AvNfFdWLRF6UAcklUL79dubXdw6F/rXIE1CzZLiej4bwSxVPJt086A3LuKnXTdM8P M7cvUg0Z4sXFRAPI5H0hRy1Wh+WqyK37SDYIxLgm4pGlvNNOfvVuWeV1iGcxU0Bdts vh1Qb1iy3/nGNPFfYodeyLA7DuetjnqPDxClIT1ggLTHhMB8W2S0fQYpq3hfFt7jG3 oTfH+vBbw6hrKt3M8hOFuhiYIFwdQPegX1xjl4VNPkaFxWtS17z/HpIhrsN2rsIQtI yOK3djWFG8veQ== 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 D37945212FD; Sun, 7 Mar 2021 21:03:17 +0300 (MSK) Received: from arseniy-pc.avp.ru (10.64.68.129) 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; Sun, 7 Mar 2021 21:03:17 +0300 From: Arseny Krasnov To: Stefan Hajnoczi , Stefano Garzarella , "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , Arseny Krasnov , Jorgen Hansen , Norbert Slusarek , Colin Ian King , Andra Paraschiv CC: , , , , , Subject: [RFC PATCH v6 14/22] virtio/vsock: rest of SOCK_SEQPACKET support Date: Sun, 7 Mar 2021 21:03:09 +0300 Message-ID: <20210307180312.3466235-1-arseny.krasnov@kaspersky.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210307175722.3464068-1-arseny.krasnov@kaspersky.com> References: <20210307175722.3464068-1-arseny.krasnov@kaspersky.com> MIME-Version: 1.0 X-Originating-IP: [10.64.68.129] X-ClientProxiedBy: hqmailmbx1.avp.ru (10.64.67.241) 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: 03/07/2021 17:49:03 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 10 X-KSE-AntiSpam-Info: Lua profiles 162254 [Mar 07 2021] X-KSE-AntiSpam-Info: LuaCore: 431 431 6af1f0c9661e70e28927a654c0fea10ff13ade05 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: {Macro_CONTENT_TYPE_ENCODING_NOT_JAPANESE} X-KSE-AntiSpam-Info: {Macro_CONTENT_TYPE_ENCODING_NOT_RUS} X-KSE-AntiSpam-Info: {Macro_CONTENT_TYPE_MISSED} X-KSE-AntiSpam-Info: {Macro_DATE_DOUBLE_SPACE} X-KSE-AntiSpam-Info: {Macro_DATE_MOSCOW} X-KSE-AntiSpam-Info: {Macro_FROM_DOUBLE_ENG_NAME} X-KSE-AntiSpam-Info: {Macro_FROM_LOWCAPS_DOUBLE_ENG_NAME_IN_EMAIL} X-KSE-AntiSpam-Info: {Macro_FROM_NOT_RU} X-KSE-AntiSpam-Info: {Macro_FROM_NOT_RUS_CHARSET} X-KSE-AntiSpam-Info: {Macro_FROM_REAL_NAME_MATCHES_ALL_USERNAME_PROB} X-KSE-AntiSpam-Info: {Macro_HEADERS_NOT_LIST} X-KSE-AntiSpam-Info: {Macro_MAILER_OTHER} X-KSE-AntiSpam-Info: {Macro_MISC_X_PRIORITY_MISSED} X-KSE-AntiSpam-Info: {Macro_NO_DKIM} X-KSE-AntiSpam-Info: {Macro_REPLY_TO_MISSED} X-KSE-AntiSpam-Info: {Macro_SUBJECT_AT_LEAST_2_WORDS} X-KSE-AntiSpam-Info: {Macro_SUBJECT_LONG_TEXT} X-KSE-AntiSpam-Info: {Macro_TO_CONTAINS_5_EMAILS} X-KSE-AntiSpam-Info: {Macro_TO_CONTAINS_SEVERAL_EMAILS} X-KSE-AntiSpam-Info: arseniy-pc.avp.ru:7.1.1;127.0.0.199:7.1.2;kaspersky.com:7.1.1;d41d8cd98f00b204e9800998ecf8427e.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: 03/07/2021 17:52:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 07.03.2021 15:50:00 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: 2021/03/07 17:11:00 X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, bases: 2021/03/07 15:50:00 #16360637 X-KLMS-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org 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 --- include/linux/virtio_vsock.h | 8 +++ net/vmw_vsock/virtio_transport_common.c | 87 ++++++++++++++++++++++++- 2 files changed, 93 insertions(+), 2 deletions(-) diff --git a/include/linux/virtio_vsock.h b/include/linux/virtio_vsock.h index d7edcfeb4cd2..6b45a8b98226 100644 --- a/include/linux/virtio_vsock.h +++ b/include/linux/virtio_vsock.h @@ -22,6 +22,7 @@ struct virtio_vsock_seqpack_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 @@ -90,6 +93,11 @@ virtio_transport_dgram_dequeue(struct vsock_sock *vsk, size_t virtio_transport_seqpacket_seq_get_len(struct vsock_sock *vsk); int +virtio_transport_seqpacket_enqueue(struct vsock_sock *vsk, + struct msghdr *msg, + int flags, + 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 9d86375935ce..8e9fdd8aba5d 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->seqpacket_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); @@ -582,6 +626,45 @@ 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, + int flags, + size_t len) +{ + int written; + + if (msg->msg_iter.iov_offset == 0) { + /* Send SEQBEGIN. */ + if (virtio_transport_seqpacket_send_ctrl(vsk, + VIRTIO_VSOCK_OP_SEQ_BEGIN, + len, + flags) < 0) + return -1; + } + + written = virtio_transport_stream_enqueue(vsk, msg, len); + + if (written < 0) + return -1; + + if (msg->msg_iter.count == 0) { + struct virtio_vsock_sock *vvs = vsk->trans; + + /* Send SEQEND. */ + if (virtio_transport_seqpacket_send_ctrl(vsk, + VIRTIO_VSOCK_OP_SEQ_END, + 0, + flags) < 0) + return -1; + + vvs->seqpacket_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, @@ -1001,7 +1084,7 @@ 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) {