From patchwork Sun Feb 7 15:17:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseny Krasnov X-Patchwork-Id: 12073043 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=-19.3 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 2AE9CC433E9 for ; Sun, 7 Feb 2021 15:22:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F05CA64E43 for ; Sun, 7 Feb 2021 15:22:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230286AbhBGPVw (ORCPT ); Sun, 7 Feb 2021 10:21:52 -0500 Received: from mx12.kaspersky-labs.com ([91.103.66.155]:13559 "EHLO mx12.kaspersky-labs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230171AbhBGPTH (ORCPT ); Sun, 7 Feb 2021 10:19:07 -0500 Received: from relay12.kaspersky-labs.com (unknown [127.0.0.10]) by relay12.kaspersky-labs.com (Postfix) with ESMTP id 7484C7601B; Sun, 7 Feb 2021 18:17:55 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kaspersky.com; s=mail; t=1612711075; bh=lo9wjvmBPa1l8FqAvKBOuMpQM5ZyAazYTHeoXC/SuV4=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=KgIiN28YHO3xEwGAAYe0XSo3UqPawGxN22RTQm9D09srAM7ZTwsEdsz2rTNdT+4TV ZUIR8FRZ+ciT0csuV7n/nhDcJWvH+8DDXcYL9yrsseAh5IITZLX0xBL2mZMVonJXES 2aPwNRMh82elap79BdOefPsUBTxpygGnkSc72slc= 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 3CC997601C; Sun, 7 Feb 2021 18:17:55 +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 15.1.2044.4; Sun, 7 Feb 2021 18:17:54 +0300 From: Arseny Krasnov To: Stefan Hajnoczi , Stefano Garzarella , "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , Arseny Krasnov , Jorgen Hansen , Colin Ian King , Andra Paraschiv , Alexander Popov CC: , , , , , Subject: [RFC PATCH v4 12/17] virtio/vsock: rest of SOCK_SEQPACKET support Date: Sun, 7 Feb 2021 18:17:44 +0300 Message-ID: <20210207151747.805754-1-arseny.krasnov@kaspersky.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210207151259.803917-1-arseny.krasnov@kaspersky.com> References: <20210207151259.803917-1-arseny.krasnov@kaspersky.com> 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: 5.9.16, Database issued on: 02/06/2021 23:52:08 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 10 X-KSE-AntiSpam-Info: Lua profiles 161679 [Feb 06 2021] X-KSE-AntiSpam-Info: LuaCore: 422 422 763e61bea9fcfcd94e075081cb96e065bc0509b4 X-KSE-AntiSpam-Info: Version: 5.9.16.0 X-KSE-AntiSpam-Info: Envelope from: arseny.krasnov@kaspersky.com X-KSE-AntiSpam-Info: {Prob_from_in_msgid} X-KSE-AntiSpam-Info: {Tracking_date, moscow} X-KSE-AntiSpam-Info: {Tracking_from_domain_doesnt_match_to} 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: 02/06/2021 23:55:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 2/6/2021 9:17:00 PM 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: 2021/02/07 14:21:00 X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, bases: 2021/02/07 10:49:00 #16133380 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) Packet's type is now set in 'virtio_send_pkt_info()' using type of socket. 2) SEQPACKET specific functions which send SEQ_BEGIN/SEQ_END. Note that both functions may sleep to wait enough space for SEQPACKET header. 3) SEQ_BEGIN/SEQ_END to TAP packet capture. 4) Send SHUTDOWN on socket close for SEQPACKET type. Signed-off-by: Arseny Krasnov --- include/linux/virtio_vsock.h | 9 +++ net/vmw_vsock/virtio_transport_common.c | 99 +++++++++++++++++++++---- 2 files changed, 95 insertions(+), 13 deletions(-) diff --git a/include/linux/virtio_vsock.h b/include/linux/virtio_vsock.h index a5e8681bfc6a..c4a39424686d 100644 --- a/include/linux/virtio_vsock.h +++ b/include/linux/virtio_vsock.h @@ -41,6 +41,7 @@ struct virtio_vsock_sock { u32 user_read_seq_len; u32 user_read_copied; u32 curr_rx_msg_cnt; + u32 next_tx_msg_cnt; }; struct virtio_vsock_pkt { @@ -85,7 +86,15 @@ virtio_transport_dgram_dequeue(struct vsock_sock *vsk, struct msghdr *msg, size_t len, int flags); +int virtio_transport_seqpacket_seq_send_len(struct vsock_sock *vsk, size_t len, int flags); +int virtio_transport_seqpacket_seq_send_eor(struct vsock_sock *vsk, int flags); size_t virtio_transport_seqpacket_seq_get_len(struct vsock_sock *vsk); +int +virtio_transport_seqpacket_dequeue(struct vsock_sock *vsk, + struct msghdr *msg, + int flags, + bool *msg_ready); + s64 virtio_transport_stream_has_data(struct vsock_sock *vsk); s64 virtio_transport_stream_has_space(struct vsock_sock *vsk); diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c index 51b66f8dd7c7..0aa0fd33e9d6 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: @@ -165,6 +167,14 @@ void virtio_transport_deliver_tap_pkt(struct virtio_vsock_pkt *pkt) } EXPORT_SYMBOL_GPL(virtio_transport_deliver_tap_pkt); +static u16 virtio_transport_get_type(struct sock *sk) +{ + if (sk->sk_type == SOCK_STREAM) + return VIRTIO_VSOCK_TYPE_STREAM; + else + return VIRTIO_VSOCK_TYPE_SEQPACKET; +} + /* This function can only be used on connecting/connected sockets, * since a socket assigned to a transport is required. * @@ -179,6 +189,13 @@ 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_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)) return -EFAULT; @@ -397,13 +414,61 @@ virtio_transport_stream_do_dequeue(struct vsock_sock *vsk, return err; } -static u16 virtio_transport_get_type(struct sock *sk) +static int virtio_transport_seqpacket_send_ctrl(struct vsock_sock *vsk, + int type, + size_t len, + int flags) { - if (sk->sk_type == SOCK_STREAM) - return VIRTIO_VSOCK_TYPE_STREAM; - else - return VIRTIO_VSOCK_TYPE_SEQPACKET; + 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_cnt = vvs->next_tx_msg_cnt, + .msg_len = 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; + vvs->next_tx_msg_cnt++; + + return virtio_transport_send_pkt_info(vsk, &info); +} + +int virtio_transport_seqpacket_seq_send_len(struct vsock_sock *vsk, size_t len, int flags) +{ + return virtio_transport_seqpacket_send_ctrl(vsk, + VIRTIO_VSOCK_OP_SEQ_BEGIN, + len, + flags); } +EXPORT_SYMBOL_GPL(virtio_transport_seqpacket_seq_send_len); + +int virtio_transport_seqpacket_seq_send_eor(struct vsock_sock *vsk, int flags) +{ + return virtio_transport_seqpacket_send_ctrl(vsk, + VIRTIO_VSOCK_OP_SEQ_END, + 0, + flags); +} +EXPORT_SYMBOL_GPL(virtio_transport_seqpacket_seq_send_eor); static inline void virtio_transport_remove_pkt(struct virtio_vsock_pkt *pkt) { @@ -577,6 +642,18 @@ virtio_transport_stream_dequeue(struct vsock_sock *vsk, } EXPORT_SYMBOL_GPL(virtio_transport_stream_dequeue); +int +virtio_transport_seqpacket_dequeue(struct vsock_sock *vsk, + struct msghdr *msg, + int flags, bool *msg_ready) +{ + if (flags & MSG_PEEK) + return -EOPNOTSUPP; + + return virtio_transport_seqpacket_do_dequeue(vsk, msg, msg_ready); +} +EXPORT_SYMBOL_GPL(virtio_transport_seqpacket_dequeue); + int virtio_transport_dgram_dequeue(struct vsock_sock *vsk, struct msghdr *msg, @@ -658,14 +735,15 @@ EXPORT_SYMBOL_GPL(virtio_transport_do_socket_init); void virtio_transport_notify_buffer_size(struct vsock_sock *vsk, u64 *val) { struct virtio_vsock_sock *vvs = vsk->trans; + int type; if (*val > VIRTIO_VSOCK_MAX_BUF_SIZE) *val = VIRTIO_VSOCK_MAX_BUF_SIZE; vvs->buf_alloc = *val; - virtio_transport_send_credit_update(vsk, VIRTIO_VSOCK_TYPE_STREAM, - NULL); + type = virtio_transport_get_type(sk_vsock(vsk)); + virtio_transport_send_credit_update(vsk, type, NULL); } EXPORT_SYMBOL_GPL(virtio_transport_notify_buffer_size); @@ -792,7 +870,6 @@ int virtio_transport_connect(struct vsock_sock *vsk) { struct virtio_vsock_pkt_info info = { .op = VIRTIO_VSOCK_OP_REQUEST, - .type = VIRTIO_VSOCK_TYPE_STREAM, .vsk = vsk, }; @@ -804,7 +881,6 @@ int virtio_transport_shutdown(struct vsock_sock *vsk, int mode) { struct virtio_vsock_pkt_info info = { .op = VIRTIO_VSOCK_OP_SHUTDOWN, - .type = VIRTIO_VSOCK_TYPE_STREAM, .flags = (mode & RCV_SHUTDOWN ? VIRTIO_VSOCK_SHUTDOWN_RCV : 0) | (mode & SEND_SHUTDOWN ? @@ -833,7 +909,6 @@ virtio_transport_stream_enqueue(struct vsock_sock *vsk, { struct virtio_vsock_pkt_info info = { .op = VIRTIO_VSOCK_OP_RW, - .type = VIRTIO_VSOCK_TYPE_STREAM, .msg = msg, .pkt_len = len, .vsk = vsk, @@ -856,7 +931,6 @@ static int virtio_transport_reset(struct vsock_sock *vsk, { struct virtio_vsock_pkt_info info = { .op = VIRTIO_VSOCK_OP_RST, - .type = VIRTIO_VSOCK_TYPE_STREAM, .reply = !!pkt, .vsk = vsk, }; @@ -1001,7 +1075,7 @@ 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) { @@ -1164,7 +1238,6 @@ virtio_transport_send_response(struct vsock_sock *vsk, { struct virtio_vsock_pkt_info info = { .op = VIRTIO_VSOCK_OP_RESPONSE, - .type = VIRTIO_VSOCK_TYPE_STREAM, .remote_cid = le64_to_cpu(pkt->hdr.src_cid), .remote_port = le32_to_cpu(pkt->hdr.src_port), .reply = true,