From patchwork Fri Jan 15 05:40:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseny Krasnov X-Patchwork-Id: 364417 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, 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 24769C4332B for ; Fri, 15 Jan 2021 05:42:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ECFDC239FD for ; Fri, 15 Jan 2021 05:42:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733219AbhAOFl5 (ORCPT ); Fri, 15 Jan 2021 00:41:57 -0500 Received: from mx13.kaspersky-labs.com ([91.103.66.164]:46215 "EHLO mx13.kaspersky-labs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733201AbhAOFlz (ORCPT ); Fri, 15 Jan 2021 00:41:55 -0500 Received: from relay13.kaspersky-labs.com (unknown [127.0.0.10]) by relay13.kaspersky-labs.com (Postfix) with ESMTP id E2AEE520FB4; Fri, 15 Jan 2021 08:41:08 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kaspersky.com; s=mail; t=1610689269; bh=9Z9ZO4B4lKxfvNuTIWVBRpQKct45TlQpRvGOlgncXkE=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=BkH7dsmJjJ9vwwcp3gabM67D10ah9EF6Pb/h/+PtqpcoY733Xqveb+bEeOWlktCfk q+5FlOdjtHTfNBqWApaLlIYX5EOwxeA4bl6uK2CAd9rFadk6O1FrLL2N7kANlOsOsn Lqmds7K2WLOtzanRpmu9s+EhQZhXdvmLcPUrVBB4= 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 61512520ED7; Fri, 15 Jan 2021 08:41:08 +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; Fri, 15 Jan 2021 08:41:07 +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 , Jeff Vander Stoep CC: , , , , , Subject: [RFC PATCH v2 02/13] af_vsock: separate rx loops for STREAM/SEQPACKET. Date: Fri, 15 Jan 2021 08:40:50 +0300 Message-ID: <20210115054054.1455729-1-arseny.krasnov@kaspersky.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210115053553.1454517-1-arseny.krasnov@kaspersky.com> References: <20210115053553.1454517-1-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: 01/15/2021 05:18:27 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 10 X-KSE-AntiSpam-Info: Lua profiles 161159 [Jan 15 2021] X-KSE-AntiSpam-Info: LuaCore: 420 420 0b339e70b2b1bb108f53ec9b40aa316bba18ceea 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: d41d8cd98f00b204e9800998ecf8427e.com:7.1.1; kaspersky.com:7.1.1; 127.0.0.199:7.1.2; arseniy-pc.avp.ru: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: 01/15/2021 05:21:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 15.01.2021 2:12:00 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: 2021/01/15 05:03:00 X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, bases: 2021/01/15 02:12:00 #16041563 X-KLMS-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This adds two receive loops: for SOCK_STREAM and SOCK_SEQPACKET. Both are look like twins, but SEQPACKET is a little bit different from STREAM: 1) It doesn't call notify callbacks. 2) It doesn't care about 'SO_SNDLOWAT' and 'SO_RCVLOWAT' values, because there is no sense for these values in SEQPACKET case. 3) It waits until whole record is received or error is found during receiving. 4) It processes and sets 'MSG_TRUNC' flag. So to avoid extra conditions for two types of socket inside on loop, two independent functions were created. Signed-off-by: Arseny Krasnov --- include/net/af_vsock.h | 5 + net/vmw_vsock/af_vsock.c | 202 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 207 insertions(+) diff --git a/include/net/af_vsock.h b/include/net/af_vsock.h index b1c717286993..46073842d489 100644 --- a/include/net/af_vsock.h +++ b/include/net/af_vsock.h @@ -135,6 +135,11 @@ struct vsock_transport { bool (*stream_is_active)(struct vsock_sock *); bool (*stream_allow)(u32 cid, u32 port); + /* SEQ_PACKET. */ + size_t (*seqpacket_seq_get_len)(struct vsock_sock *); + ssize_t (*seqpacket_dequeue)(struct vsock_sock *, struct msghdr *, + size_t len, int flags); + /* Notification. */ int (*notify_poll_in)(struct vsock_sock *, size_t, bool *); int (*notify_poll_out)(struct vsock_sock *, size_t, bool *); diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index af716f5a93a4..afacbe9f4231 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -1870,6 +1870,208 @@ static int vsock_wait_data(struct sock *sk, struct wait_queue_entry *wait, return err; } +static int __vsock_seqpacket_recvmsg(struct sock *sk, struct msghdr *msg, + size_t len, int flags) +{ + int err = 0; + size_t record_len; + struct vsock_sock *vsk; + const struct vsock_transport *transport; + long timeout; + ssize_t dequeued_total = 0; + unsigned long orig_nr_segs; + const struct iovec *orig_iov; + DEFINE_WAIT(wait); + + vsk = vsock_sk(sk); + transport = vsk->transport; + + timeout = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); + msg->msg_flags &= ~MSG_EOR; + orig_nr_segs = msg->msg_iter.nr_segs; + orig_iov = msg->msg_iter.iov; + + while (1) { + s64 ready; + + prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); + ready = vsock_stream_has_data(vsk); + + if (ready == 0) { + if (vsock_wait_data(sk, &wait, timeout, NULL, 0)) { + /* In case of any loop break(timeout, signal + * interrupt or shutdown), we report user that + * nothing was copied. + */ + dequeued_total = 0; + break; + } + } else { + ssize_t dequeued; + + finish_wait(sk_sleep(sk), &wait); + + if (ready < 0) { + err = -ENOMEM; + goto out; + } + + if (dequeued_total == 0) { + record_len = + transport->seqpacket_seq_get_len(vsk); + + if (record_len == 0) + continue; + } + + /* 'msg_iter.count' is number of unused bytes in iov. + * On every copy to iov iterator it is decremented at + * size of data. + */ + dequeued = transport->seqpacket_dequeue(vsk, msg, + msg->msg_iter.count, flags); + + if (dequeued < 0) { + dequeued_total = 0; + + if (dequeued == -EAGAIN) { + iov_iter_init(&msg->msg_iter, READ, + orig_iov, orig_nr_segs, + len); + msg->msg_flags &= ~MSG_EOR; + continue; + } + + err = -ENOMEM; + break; + } + + dequeued_total += dequeued; + + if (dequeued_total >= record_len) + break; + } + } + if (sk->sk_err) + err = -sk->sk_err; + else if (sk->sk_shutdown & RCV_SHUTDOWN) + err = 0; + + if (dequeued_total > 0) { + /* User sets MSG_TRUNC, so return real length of + * packet. + */ + if (flags & MSG_TRUNC) + err = record_len; + else + err = len - msg->msg_iter.count; + + /* Always set MSG_TRUNC if real length of packet is + * bigger that user buffer. + */ + if (record_len > len) + msg->msg_flags |= MSG_TRUNC; + } +out: + return err; +} + +static int __vsock_stream_recvmsg(struct sock *sk, struct msghdr *msg, + size_t len, int flags) +{ + int err; + const struct vsock_transport *transport; + struct vsock_sock *vsk; + size_t target; + struct vsock_transport_recv_notify_data recv_data; + long timeout; + ssize_t copied; + + DEFINE_WAIT(wait); + + vsk = vsock_sk(sk); + transport = vsk->transport; + + /* We must not copy less than target bytes into the user's buffer + * before returning successfully, so we wait for the consume queue to + * have that much data to consume before dequeueing. Note that this + * makes it impossible to handle cases where target is greater than the + * queue size. + */ + target = sock_rcvlowat(sk, flags & MSG_WAITALL, len); + if (target >= transport->stream_rcvhiwat(vsk)) { + err = -ENOMEM; + goto out; + } + timeout = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); + copied = 0; + + err = transport->notify_recv_init(vsk, target, &recv_data); + if (err < 0) + goto out; + + while (1) { + s64 ready; + + prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); + ready = vsock_stream_has_data(vsk); + + if (ready == 0) { + if (vsock_wait_data(sk, &wait, timeout, &recv_data, target)) + break; + } else { + ssize_t read; + + finish_wait(sk_sleep(sk), &wait); + + if (ready < 0) { + /* Invalid queue pair content. XXX This should + * be changed to a connection reset in a later + * change. + */ + + err = -ENOMEM; + goto out; + } + + err = transport->notify_recv_pre_dequeue(vsk, + target, &recv_data); + if (err < 0) + break; + read = transport->stream_dequeue(vsk, msg, len - copied, flags); + + if (read < 0) { + err = -ENOMEM; + break; + } + + copied += read; + + err = transport->notify_recv_post_dequeue(vsk, + target, read, + !(flags & MSG_PEEK), &recv_data); + if (err < 0) + goto out; + + if (read >= target || flags & MSG_PEEK) + break; + + target -= read; + } + } + + if (sk->sk_err) + err = -sk->sk_err; + else if (sk->sk_shutdown & RCV_SHUTDOWN) + err = 0; + if (copied > 0) + err = copied; + +out: + release_sock(sk); + return err; +} + static int vsock_stream_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, int flags) From patchwork Fri Jan 15 05:41:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseny Krasnov X-Patchwork-Id: 364416 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, 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 14840C433E6 for ; Fri, 15 Jan 2021 05:43:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DBF20239EF for ; Fri, 15 Jan 2021 05:43:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733261AbhAOFmh (ORCPT ); Fri, 15 Jan 2021 00:42:37 -0500 Received: from mx13.kaspersky-labs.com ([91.103.66.164]:46530 "EHLO mx13.kaspersky-labs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732093AbhAOFmg (ORCPT ); Fri, 15 Jan 2021 00:42:36 -0500 Received: from relay13.kaspersky-labs.com (unknown [127.0.0.10]) by relay13.kaspersky-labs.com (Postfix) with ESMTP id 3040952176E; Fri, 15 Jan 2021 08:41:50 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kaspersky.com; s=mail; t=1610689310; bh=uiTfdp+y1ejoIzWucUCkbz6uafmLJAh22TeFNE5cU3Y=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=NxuSil7dg/yqbTabYOrYU9Vef1l+7KfjZZQ318xOTG0B1cuR1OyzjYMI5eJVOgoFX bW6s2cZOWJ0OkKSK9mFhGRhFARLT60SeQsqe7jmknn7NTTsqcymrsmWUl4F1VMzUij +ZgELqRjUDZc8mMhb/JMD06+7JijG4nbfysUlQ7s= 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 CD8F1521779; Fri, 15 Jan 2021 08:41:49 +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; Fri, 15 Jan 2021 08:41:49 +0300 From: Arseny Krasnov To: Stefan Hajnoczi , Stefano Garzarella , "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , Arseny Krasnov , Jorgen Hansen , Andra Paraschiv , Colin Ian King , Jeff Vander Stoep CC: , , , , , Subject: [RFC PATCH v2 04/13] af_vsock: replace previous stream rx loop. Date: Fri, 15 Jan 2021 08:41:38 +0300 Message-ID: <20210115054141.1456019-1-arseny.krasnov@kaspersky.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210115053553.1454517-1-arseny.krasnov@kaspersky.com> References: <20210115053553.1454517-1-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: 5.9.16, Database issued on: 01/15/2021 05:18:27 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 10 X-KSE-AntiSpam-Info: Lua profiles 161159 [Jan 15 2021] X-KSE-AntiSpam-Info: LuaCore: 420 420 0b339e70b2b1bb108f53ec9b40aa316bba18ceea 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: arseniy-pc.avp.ru:7.1.1; kaspersky.com:7.1.1; 127.0.0.199:7.1.2; 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: 01/15/2021 05:21:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 15.01.2021 2:12:00 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: 2021/01/15 05:03:00 X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, bases: 2021/01/15 02:12:00 #16041563 X-KLMS-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This removes previous 'vsock_stream_recvmsg()' and uses newly implemented receive loops. Moved to separate patch to make review easier. Signed-off-by: Arseny Krasnov --- net/vmw_vsock/af_vsock.c | 184 +++------------------------------------ 1 file changed, 12 insertions(+), 172 deletions(-) diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 38afaa90d141..5bf887190881 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -2072,178 +2072,6 @@ static int __vsock_stream_recvmsg(struct sock *sk, struct msghdr *msg, return err; } -static int -vsock_stream_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, - int flags) -{ - struct sock *sk; - struct vsock_sock *vsk; - const struct vsock_transport *transport; - int err; - size_t target; - ssize_t copied; - long timeout; - struct vsock_transport_recv_notify_data recv_data; - - DEFINE_WAIT(wait); - - sk = sock->sk; - vsk = vsock_sk(sk); - transport = vsk->transport; - err = 0; - - lock_sock(sk); - - if (!transport || sk->sk_state != TCP_ESTABLISHED) { - /* Recvmsg is supposed to return 0 if a peer performs an - * orderly shutdown. Differentiate between that case and when a - * peer has not connected or a local shutdown occured with the - * SOCK_DONE flag. - */ - if (sock_flag(sk, SOCK_DONE)) - err = 0; - else - err = -ENOTCONN; - - goto out; - } - - if (flags & MSG_OOB) { - err = -EOPNOTSUPP; - goto out; - } - - /* We don't check peer_shutdown flag here since peer may actually shut - * down, but there can be data in the queue that a local socket can - * receive. - */ - if (sk->sk_shutdown & RCV_SHUTDOWN) { - err = 0; - goto out; - } - - /* It is valid on Linux to pass in a zero-length receive buffer. This - * is not an error. We may as well bail out now. - */ - if (!len) { - err = 0; - goto out; - } - - /* We must not copy less than target bytes into the user's buffer - * before returning successfully, so we wait for the consume queue to - * have that much data to consume before dequeueing. Note that this - * makes it impossible to handle cases where target is greater than the - * queue size. - */ - target = sock_rcvlowat(sk, flags & MSG_WAITALL, len); - if (target >= transport->stream_rcvhiwat(vsk)) { - err = -ENOMEM; - goto out; - } - timeout = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); - copied = 0; - - err = transport->notify_recv_init(vsk, target, &recv_data); - if (err < 0) - goto out; - - - while (1) { - s64 ready; - - prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); - ready = vsock_stream_has_data(vsk); - - if (ready == 0) { - if (sk->sk_err != 0 || - (sk->sk_shutdown & RCV_SHUTDOWN) || - (vsk->peer_shutdown & SEND_SHUTDOWN)) { - finish_wait(sk_sleep(sk), &wait); - break; - } - /* Don't wait for non-blocking sockets. */ - if (timeout == 0) { - err = -EAGAIN; - finish_wait(sk_sleep(sk), &wait); - break; - } - - err = transport->notify_recv_pre_block( - vsk, target, &recv_data); - if (err < 0) { - finish_wait(sk_sleep(sk), &wait); - break; - } - release_sock(sk); - timeout = schedule_timeout(timeout); - lock_sock(sk); - - if (signal_pending(current)) { - err = sock_intr_errno(timeout); - finish_wait(sk_sleep(sk), &wait); - break; - } else if (timeout == 0) { - err = -EAGAIN; - finish_wait(sk_sleep(sk), &wait); - break; - } - } else { - ssize_t read; - - finish_wait(sk_sleep(sk), &wait); - - if (ready < 0) { - /* Invalid queue pair content. XXX This should - * be changed to a connection reset in a later - * change. - */ - - err = -ENOMEM; - goto out; - } - - err = transport->notify_recv_pre_dequeue( - vsk, target, &recv_data); - if (err < 0) - break; - - read = transport->stream_dequeue( - vsk, msg, - len - copied, flags); - if (read < 0) { - err = -ENOMEM; - break; - } - - copied += read; - - err = transport->notify_recv_post_dequeue( - vsk, target, read, - !(flags & MSG_PEEK), &recv_data); - if (err < 0) - goto out; - - if (read >= target || flags & MSG_PEEK) - break; - - target -= read; - } - } - - if (sk->sk_err) - err = -sk->sk_err; - else if (sk->sk_shutdown & RCV_SHUTDOWN) - err = 0; - - if (copied > 0) - err = copied; - -out: - release_sock(sk); - return err; -} - static int vsock_connectible_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, int flags) { @@ -2299,6 +2127,18 @@ static int vsock_connectible_recvmsg(struct socket *sock, struct msghdr *msg, return err; } +static int vsock_seqpacket_recvmsg(struct socket *sock, struct msghdr *msg, + size_t len, int flags) +{ + return vsock_connectible_recvmsg(sock, msg, len, flags); +} + +static int vsock_stream_recvmsg(struct socket *sock, struct msghdr *msg, + size_t len, int flags) +{ + return vsock_connectible_recvmsg(sock, msg, len, flags); +} + static const struct proto_ops vsock_stream_ops = { .family = PF_VSOCK, .owner = THIS_MODULE, From patchwork Fri Jan 15 05:42:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseny Krasnov X-Patchwork-Id: 364415 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, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 5063CC433DB for ; Fri, 15 Jan 2021 05:44:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0D811239EF for ; Fri, 15 Jan 2021 05:44:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733298AbhAOFnn (ORCPT ); Fri, 15 Jan 2021 00:43:43 -0500 Received: from mx12.kaspersky-labs.com ([91.103.66.155]:61520 "EHLO mx12.kaspersky-labs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731908AbhAOFnj (ORCPT ); Fri, 15 Jan 2021 00:43:39 -0500 Received: from relay12.kaspersky-labs.com (unknown [127.0.0.10]) by relay12.kaspersky-labs.com (Postfix) with ESMTP id CF80F75B8A; Fri, 15 Jan 2021 08:42:53 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kaspersky.com; s=mail; t=1610689373; bh=ljgNBqBbqAp+WTz3NeQEjfjnUjyCFJNthe0rdbBz0ks=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=o8il0Uqcx3rPvdxLGlaBTWiooNGNm3EraYWl1azVN3EX00ytOYOO8Ac7LTaKpa37p fK1nMBR36KoE07Ys6xevrujeazoYk9OU/eNzcdhhVeZ3TaaFXp8QvtOTMKeawuswxf x8xTFNnBybS2Q0hzLNUov9AnUosIlLGA/DSxW1wE= 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 984C575BB6; Fri, 15 Jan 2021 08:42:53 +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; Fri, 15 Jan 2021 08:42:53 +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 , Jeff Vander Stoep CC: , , , , , Subject: [RFC PATCH v2 06/13] af_vsock: general support of SOCK_SEQPACKET type. Date: Fri, 15 Jan 2021 08:42:43 +0300 Message-ID: <20210115054247.1456375-1-arseny.krasnov@kaspersky.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210115053553.1454517-1-arseny.krasnov@kaspersky.com> References: <20210115053553.1454517-1-arseny.krasnov@kaspersky.com> MIME-Version: 1.0 X-Originating-IP: [10.64.64.121] 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: 5.9.16, Database issued on: 01/15/2021 05:18:27 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 10 X-KSE-AntiSpam-Info: Lua profiles 161159 [Jan 15 2021] X-KSE-AntiSpam-Info: LuaCore: 420 420 0b339e70b2b1bb108f53ec9b40aa316bba18ceea 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: arseniy-pc.avp.ru:7.1.1; kaspersky.com:7.1.1; 127.0.0.199:7.1.2; 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: 01/15/2021 05:21:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 15.01.2021 2:12:00 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: 2021/01/15 05:03:00 X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, bases: 2021/01/15 02:12:00 #16041563 X-KLMS-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This adds socket operations for SOCK_SEQPACKET and adds this type of socket for conditions where SOCK_STREAM is involved because both type of sockets are connect oriented. Signed-off-by: Arseny Krasnov --- net/vmw_vsock/af_vsock.c | 108 +++++++++++++++++++++++++++++++++------ 1 file changed, 92 insertions(+), 16 deletions(-) diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 4a7cdf7756c0..d0ef066e9352 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -452,6 +452,7 @@ int vsock_assign_transport(struct vsock_sock *vsk, struct vsock_sock *psk) new_transport = transport_dgram; break; case SOCK_STREAM: + case SOCK_SEQPACKET: if (vsock_use_local_transport(remote_cid)) new_transport = transport_local; else if (remote_cid <= VMADDR_CID_HOST || !transport_h2g || @@ -459,6 +460,13 @@ int vsock_assign_transport(struct vsock_sock *vsk, struct vsock_sock *psk) new_transport = transport_g2h; else new_transport = transport_h2g; + + if (sk->sk_type == SOCK_SEQPACKET) { + if (!new_transport->seqpacket_seq_send_len || + !new_transport->seqpacket_seq_get_len || + !new_transport->seqpacket_dequeue) + return -ENODEV; + } break; default: return -ESOCKTNOSUPPORT; @@ -604,8 +612,8 @@ static void vsock_pending_work(struct work_struct *work) /**** SOCKET OPERATIONS ****/ -static int __vsock_bind_stream(struct vsock_sock *vsk, - struct sockaddr_vm *addr) +static int __vsock_bind_connectible(struct vsock_sock *vsk, + struct sockaddr_vm *addr) { static u32 port; struct sockaddr_vm new_addr; @@ -684,8 +692,9 @@ static int __vsock_bind(struct sock *sk, struct sockaddr_vm *addr) switch (sk->sk_socket->type) { case SOCK_STREAM: + case SOCK_SEQPACKET: spin_lock_bh(&vsock_table_lock); - retval = __vsock_bind_stream(vsk, addr); + retval = __vsock_bind_connectible(vsk, addr); spin_unlock_bh(&vsock_table_lock); break; @@ -767,6 +776,11 @@ static struct sock *__vsock_create(struct net *net, return sk; } +static bool sock_type_connectible(u16 type) +{ + return (type == SOCK_STREAM || type == SOCK_SEQPACKET); +} + static void __vsock_release(struct sock *sk, int level) { if (sk) { @@ -785,7 +799,7 @@ static void __vsock_release(struct sock *sk, int level) if (vsk->transport) vsk->transport->release(vsk); - else if (sk->sk_type == SOCK_STREAM) + else if (sock_type_connectible(sk->sk_type)) vsock_remove_sock(vsk); sock_orphan(sk); @@ -945,7 +959,7 @@ static int vsock_shutdown(struct socket *sock, int mode) sk = sock->sk; if (sock->state == SS_UNCONNECTED) { err = -ENOTCONN; - if (sk->sk_type == SOCK_STREAM) + if (sock_type_connectible(sk->sk_type)) return err; } else { sock->state = SS_DISCONNECTING; @@ -960,7 +974,7 @@ static int vsock_shutdown(struct socket *sock, int mode) sk->sk_state_change(sk); release_sock(sk); - if (sk->sk_type == SOCK_STREAM) { + if (sock_type_connectible(sk->sk_type)) { sock_reset_flag(sk, SOCK_DONE); vsock_send_shutdown(sk, mode); } @@ -1013,7 +1027,7 @@ static __poll_t vsock_poll(struct file *file, struct socket *sock, if (!(sk->sk_shutdown & SEND_SHUTDOWN)) mask |= EPOLLOUT | EPOLLWRNORM | EPOLLWRBAND; - } else if (sock->type == SOCK_STREAM) { + } else if (sock_type_connectible(sk->sk_type)) { const struct vsock_transport *transport = vsk->transport; lock_sock(sk); @@ -1259,8 +1273,8 @@ static void vsock_connect_timeout(struct work_struct *work) sock_put(sk); } -static int vsock_stream_connect(struct socket *sock, struct sockaddr *addr, - int addr_len, int flags) +static int vsock_connect(struct socket *sock, struct sockaddr *addr, + int addr_len, int flags) { int err; struct sock *sk; @@ -1410,7 +1424,7 @@ static int vsock_accept(struct socket *sock, struct socket *newsock, int flags, lock_sock(listener); - if (sock->type != SOCK_STREAM) { + if (!sock_type_connectible(sock->type)) { err = -EOPNOTSUPP; goto out; } @@ -1477,6 +1491,18 @@ static int vsock_accept(struct socket *sock, struct socket *newsock, int flags, return err; } +static int vsock_stream_connect(struct socket *sock, struct sockaddr *addr, + int addr_len, int flags) +{ + return vsock_connect(sock, addr, addr_len, flags); +} + +static int vsock_seqpacket_connect(struct socket *sock, struct sockaddr *addr, + int addr_len, int flags) +{ + return vsock_connect(sock, addr, addr_len, flags); +} + static int vsock_listen(struct socket *sock, int backlog) { int err; @@ -1487,7 +1513,7 @@ static int vsock_listen(struct socket *sock, int backlog) lock_sock(sk); - if (sock->type != SOCK_STREAM) { + if (!sock_type_connectible(sk->sk_type)) { err = -EOPNOTSUPP; goto out; } @@ -1531,11 +1557,11 @@ static void vsock_update_buffer_size(struct vsock_sock *vsk, vsk->buffer_size = val; } -static int vsock_stream_setsockopt(struct socket *sock, - int level, - int optname, - sockptr_t optval, - unsigned int optlen) +static int vsock_setsockopt(struct socket *sock, + int level, + int optname, + sockptr_t optval, + unsigned int optlen) { int err; struct sock *sk; @@ -1612,6 +1638,24 @@ static int vsock_stream_setsockopt(struct socket *sock, return err; } +static int vsock_seqpacket_setsockopt(struct socket *sock, + int level, + int optname, + sockptr_t optval, + unsigned int optlen) +{ + return vsock_setsockopt(sock, level, optname, optval, optlen); +} + +static int vsock_stream_setsockopt(struct socket *sock, + int level, + int optname, + sockptr_t optval, + unsigned int optlen) +{ + return vsock_setsockopt(sock, level, optname, optval, optlen); +} + static int vsock_stream_getsockopt(struct socket *sock, int level, int optname, char __user *optval, @@ -1683,6 +1727,14 @@ static int vsock_stream_getsockopt(struct socket *sock, return 0; } +static int vsock_seqpacket_getsockopt(struct socket *sock, + int level, int optname, + char __user *optval, + int __user *optlen) +{ + return vsock_stream_getsockopt(sock, level, optname, optval, optlen); +} + static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) { @@ -2184,6 +2236,27 @@ static const struct proto_ops vsock_stream_ops = { .sendpage = sock_no_sendpage, }; +static const struct proto_ops vsock_seqpacket_ops = { + .family = PF_VSOCK, + .owner = THIS_MODULE, + .release = vsock_release, + .bind = vsock_bind, + .connect = vsock_seqpacket_connect, + .socketpair = sock_no_socketpair, + .accept = vsock_accept, + .getname = vsock_getname, + .poll = vsock_poll, + .ioctl = sock_no_ioctl, + .listen = vsock_listen, + .shutdown = vsock_shutdown, + .setsockopt = vsock_seqpacket_setsockopt, + .getsockopt = vsock_seqpacket_getsockopt, + .sendmsg = vsock_seqpacket_sendmsg, + .recvmsg = vsock_seqpacket_recvmsg, + .mmap = sock_no_mmap, + .sendpage = sock_no_sendpage, +}; + static int vsock_create(struct net *net, struct socket *sock, int protocol, int kern) { @@ -2204,6 +2277,9 @@ static int vsock_create(struct net *net, struct socket *sock, case SOCK_STREAM: sock->ops = &vsock_stream_ops; break; + case SOCK_SEQPACKET: + sock->ops = &vsock_seqpacket_ops; + break; default: return -ESOCKTNOSUPPORT; } From patchwork Fri Jan 15 05:43:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseny Krasnov X-Patchwork-Id: 364414 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, 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 DFEB0C433DB for ; Fri, 15 Jan 2021 05:44:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B765B239FC for ; Fri, 15 Jan 2021 05:44:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387405AbhAOFoW (ORCPT ); Fri, 15 Jan 2021 00:44:22 -0500 Received: from mx13.kaspersky-labs.com ([91.103.66.164]:47087 "EHLO mx13.kaspersky-labs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725988AbhAOFoV (ORCPT ); Fri, 15 Jan 2021 00:44:21 -0500 Received: from relay13.kaspersky-labs.com (unknown [127.0.0.10]) by relay13.kaspersky-labs.com (Postfix) with ESMTP id D993452116F; Fri, 15 Jan 2021 08:43:35 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kaspersky.com; s=mail; t=1610689416; bh=vJ3PTxGW2zYX6A7Up860n7fKx1dX/L1UT2MEnwa6GCI=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=BJO5lxGetmjhYMPs5goQip9UtUFeiaH2DpB+EVZ0zFljYgsVNEl6SBzzgTvw5549Z G59pccAxdzV9tBSrryO8D5zn7IWmUJPvcjXzpaTYwwdBT++JOdaS8rgijGmPjtjt+c OpFL988Mgmry8rri2jh9mjeB5nhWuRdhQxafzLVc= 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 691EE521145; Fri, 15 Jan 2021 08:43:35 +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; Fri, 15 Jan 2021 08:43:34 +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 , Jeff Vander Stoep CC: , , , , , Subject: [RFC PATCH v2 08/13] virtio/vsock: dequeue callback for SOCK_SEQPACKET. Date: Fri, 15 Jan 2021 08:43:24 +0300 Message-ID: <20210115054327.1456645-1-arseny.krasnov@kaspersky.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210115053553.1454517-1-arseny.krasnov@kaspersky.com> References: <20210115053553.1454517-1-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: 5.9.16, Database issued on: 01/15/2021 05:18:27 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 10 X-KSE-AntiSpam-Info: Lua profiles 161159 [Jan 15 2021] X-KSE-AntiSpam-Info: LuaCore: 420 420 0b339e70b2b1bb108f53ec9b40aa316bba18ceea 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: arseniy-pc.avp.ru:7.1.1; kaspersky.com:7.1.1; 127.0.0.199:7.1.2; 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: 01/15/2021 05:21:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 15.01.2021 2:12:00 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: 2021/01/15 05:03:00 X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, bases: 2021/01/15 02:12:00 #16041563 X-KLMS-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This adds transport callback and it's logic for SEQPACKET dequeue. Callback fetches RW packets from rx queue of socket until whole record is copied(if user's buffer is full, user is not woken up). This is done to not stall sender, because if we wake up user and it leaves syscall, nobody will send credit update for rest of record, and sender will wait for next enter of read syscall at receiver's side. So if user buffer is full, we just send credit update and drop data. If during copy SEQ_BEGIN was found(and not all data was copied), copying is restarted by reset user's iov iterator(previous unfinished data is dropped). Signed-off-by: Arseny Krasnov --- include/linux/virtio_vsock.h | 4 + include/uapi/linux/virtio_vsock.h | 9 ++ net/vmw_vsock/virtio_transport_common.c | 128 ++++++++++++++++++++++++ 3 files changed, 141 insertions(+) diff --git a/include/linux/virtio_vsock.h b/include/linux/virtio_vsock.h index dc636b727179..7f0ef5204e33 100644 --- a/include/linux/virtio_vsock.h +++ b/include/linux/virtio_vsock.h @@ -36,6 +36,10 @@ struct virtio_vsock_sock { u32 rx_bytes; u32 buf_alloc; struct list_head rx_queue; + + /* For SOCK_SEQPACKET */ + u32 user_read_seq_len; + u32 user_read_copied; }; struct virtio_vsock_pkt { diff --git a/include/uapi/linux/virtio_vsock.h b/include/uapi/linux/virtio_vsock.h index 1d57ed3d84d2..058908bc19fc 100644 --- a/include/uapi/linux/virtio_vsock.h +++ b/include/uapi/linux/virtio_vsock.h @@ -65,6 +65,7 @@ struct virtio_vsock_hdr { enum virtio_vsock_type { VIRTIO_VSOCK_TYPE_STREAM = 1, + VIRTIO_VSOCK_TYPE_SEQPACKET = 2, }; enum virtio_vsock_op { @@ -83,6 +84,9 @@ enum virtio_vsock_op { VIRTIO_VSOCK_OP_CREDIT_UPDATE = 6, /* Request the peer to send the credit info to us */ VIRTIO_VSOCK_OP_CREDIT_REQUEST = 7, + + /* Record begin for SOCK_SEQPACKET */ + VIRTIO_VSOCK_OP_SEQ_BEGIN = 8, }; /* VIRTIO_VSOCK_OP_SHUTDOWN flags values */ @@ -91,4 +95,9 @@ enum virtio_vsock_shutdown { VIRTIO_VSOCK_SHUTDOWN_SEND = 2, }; +/* VIRTIO_VSOCK_OP_RW flags values for SOCK_SEQPACKET type */ +enum virtio_vsock_rw_seqpacket { + VIRTIO_VSOCK_RW_EOR = 1, +}; + #endif /* _UAPI_LINUX_VIRTIO_VSOCK_H */ diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c index 5956939eebb7..4328f653a477 100644 --- a/net/vmw_vsock/virtio_transport_common.c +++ b/net/vmw_vsock/virtio_transport_common.c @@ -397,6 +397,132 @@ virtio_transport_stream_do_dequeue(struct vsock_sock *vsk, return err; } +static inline void virtio_transport_del_n_free_pkt(struct virtio_vsock_pkt *pkt) +{ + list_del(&pkt->list); + virtio_transport_free_pkt(pkt); +} + +static size_t virtio_transport_drop_until_seq_begin(struct virtio_vsock_sock *vvs) +{ + struct virtio_vsock_pkt *pkt, *n; + size_t bytes_dropped = 0; + + list_for_each_entry_safe(pkt, n, &vvs->rx_queue, list) { + if (le16_to_cpu(pkt->hdr.op) == VIRTIO_VSOCK_OP_SEQ_BEGIN) + break; + + bytes_dropped += le32_to_cpu(pkt->hdr.len); + virtio_transport_dec_rx_pkt(vvs, pkt); + virtio_transport_del_n_free_pkt(pkt); + } + + return bytes_dropped; +} + +static ssize_t virtio_transport_seqpacket_do_dequeue(struct vsock_sock *vsk, + struct msghdr *msg, + size_t user_buf_len) +{ + struct virtio_vsock_sock *vvs = vsk->trans; + struct virtio_vsock_pkt *pkt; + size_t bytes_handled = 0; + int err = 0; + + spin_lock_bh(&vvs->rx_lock); + + if (user_buf_len == 0) { + /* User's buffer is full, we processing rest of + * record and drop it. If 'SEQ_BEGIN' is found + * while iterating, user will be woken up, + * because record is already copied, and we + * don't care about absent of some tail RW packets + * of it. Return number of bytes(rest of record), + * but ignore credit update for such absent bytes. + */ + bytes_handled = virtio_transport_drop_until_seq_begin(vvs); + vvs->user_read_copied += bytes_handled; + + if (!list_empty(&vvs->rx_queue) && + vvs->user_read_copied < vvs->user_read_seq_len) { + /* 'SEQ_BEGIN' found, but record isn't complete. + * Set number of copied bytes to fit record size + * and force counters to finish receiving. + */ + bytes_handled += (vvs->user_read_seq_len - vvs->user_read_copied); + vvs->user_read_copied = vvs->user_read_seq_len; + } + } + + /* Now start copying. */ + while (vvs->user_read_copied < vvs->user_read_seq_len && + vvs->rx_bytes && + user_buf_len && + !err) { + pkt = list_first_entry(&vvs->rx_queue, struct virtio_vsock_pkt, list); + + switch (le16_to_cpu(pkt->hdr.op)) { + case VIRTIO_VSOCK_OP_SEQ_BEGIN: { + /* Unexpected 'SEQ_BEGIN' during record copy: + * Leave receive loop, 'EAGAIN' will restart it from + * outer receive loop, packet is still in queue and + * counters are cleared. So in next loop enter, + * 'SEQ_BEGIN' will be dequeued first. User's iov + * iterator will be reset in outer loop. Also + * send credit update, because some bytes could be + * copied. User will never see unfinished record. + */ + err = -EAGAIN; + break; + } + case VIRTIO_VSOCK_OP_RW: { + size_t bytes_to_copy; + size_t pkt_len; + + pkt_len = (size_t)le32_to_cpu(pkt->hdr.len); + bytes_to_copy = min(user_buf_len, pkt_len); + + /* sk_lock is held by caller so no one else can dequeue. + * Unlock rx_lock since memcpy_to_msg() may sleep. + */ + spin_unlock_bh(&vvs->rx_lock); + + if (memcpy_to_msg(msg, pkt->buf, bytes_to_copy)) { + spin_lock_bh(&vvs->rx_lock); + err = -EINVAL; + break; + } + + spin_lock_bh(&vvs->rx_lock); + user_buf_len -= bytes_to_copy; + bytes_handled += pkt->len; + vvs->user_read_copied += bytes_to_copy; + + if (le16_to_cpu(pkt->hdr.flags) & VIRTIO_VSOCK_RW_EOR) + msg->msg_flags |= MSG_EOR; + break; + } + default: + ; + } + + /* For unexpected 'SEQ_BEGIN', keep such packet in queue, + * but drop any other type of packet. + */ + if (le16_to_cpu(pkt->hdr.op) != VIRTIO_VSOCK_OP_SEQ_BEGIN) { + virtio_transport_dec_rx_pkt(vvs, pkt); + virtio_transport_del_n_free_pkt(pkt); + } + } + + spin_unlock_bh(&vvs->rx_lock); + + virtio_transport_send_credit_update(vsk, VIRTIO_VSOCK_TYPE_SEQPACKET, + NULL); + + return err ?: bytes_handled; +} + ssize_t virtio_transport_stream_dequeue(struct vsock_sock *vsk, struct msghdr *msg, @@ -481,6 +607,8 @@ int virtio_transport_do_socket_init(struct vsock_sock *vsk, spin_lock_init(&vvs->rx_lock); spin_lock_init(&vvs->tx_lock); INIT_LIST_HEAD(&vvs->rx_queue); + vvs->user_read_copied = 0; + vvs->user_read_seq_len = 0; return 0; } From patchwork Fri Jan 15 05:44:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseny Krasnov X-Patchwork-Id: 364413 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, 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 8B4DFC433DB for ; Fri, 15 Jan 2021 05:45:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3BC76239EF for ; Fri, 15 Jan 2021 05:45:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732235AbhAOFpR (ORCPT ); Fri, 15 Jan 2021 00:45:17 -0500 Received: from mx13.kaspersky-labs.com ([91.103.66.164]:47317 "EHLO mx13.kaspersky-labs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726433AbhAOFpF (ORCPT ); Fri, 15 Jan 2021 00:45:05 -0500 Received: from relay13.kaspersky-labs.com (unknown [127.0.0.10]) by relay13.kaspersky-labs.com (Postfix) with ESMTP id CC9CF520D82; Fri, 15 Jan 2021 08:44:18 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kaspersky.com; s=mail; t=1610689459; bh=VeEJtFfFFvAyU4gRN7UkJiPjTwW5+qY2c3ssMTAi8ic=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=Bv1j/U9MSFLhDxRaOgIjK5Rh5AzhLn3aXcPFBisBFeqNUKCu1V9QgRlhIWGi+ErCh Zty5IMVhBcaqgdpJK3bsm9LwCTaGtjZtDJENFyD4wfBZO8tYaBOLPzfQsbR1zJxy4h 8EdUmNgY/6K+hLweNCYvQPMpSl2iudjMyVrx4jK8= 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 71C35520DD4; Fri, 15 Jan 2021 08:44:18 +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; Fri, 15 Jan 2021 08:44:17 +0300 From: Arseny Krasnov To: Stefan Hajnoczi , Stefano Garzarella , "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , Arseny Krasnov , Andra Paraschiv , Colin Ian King , Jeff Vander Stoep CC: , , , , , Subject: [RFC PATCH v2 10/13] virtio/vsock: update receive logic Date: Fri, 15 Jan 2021 08:44:07 +0300 Message-ID: <20210115054410.1456928-1-arseny.krasnov@kaspersky.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210115053553.1454517-1-arseny.krasnov@kaspersky.com> References: <20210115053553.1454517-1-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: 01/15/2021 05:18:27 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 10 X-KSE-AntiSpam-Info: Lua profiles 161159 [Jan 15 2021] X-KSE-AntiSpam-Info: LuaCore: 420 420 0b339e70b2b1bb108f53ec9b40aa316bba18ceea 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: arseniy-pc.avp.ru:7.1.1; kaspersky.com:7.1.1; 127.0.0.199:7.1.2; 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: 01/15/2021 05:21:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 15.01.2021 2:12:00 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: 2021/01/15 05:03:00 X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, bases: 2021/01/15 02:12:00 #16041563 X-KLMS-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This modifies current receive logic for SEQPACKET support: 1) Add 'SEQ_BEGIN' packet to socket's rx queue. 2) Add 'RW' packet to rx queue, but without merging inside buffer of last packet in queue. 3) Perform check for packet type and socket type on receive(if mismatch, then reset connection). Signed-off-by: Arseny Krasnov --- net/vmw_vsock/virtio_transport_common.c | 79 ++++++++++++++++++------- 1 file changed, 58 insertions(+), 21 deletions(-) diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c index fe1272e74517..c3e07eb1c666 100644 --- a/net/vmw_vsock/virtio_transport_common.c +++ b/net/vmw_vsock/virtio_transport_common.c @@ -397,6 +397,14 @@ virtio_transport_stream_do_dequeue(struct vsock_sock *vsk, return err; } +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; +} + static inline void virtio_transport_del_n_free_pkt(struct virtio_vsock_pkt *pkt) { list_del(&pkt->list); @@ -1050,39 +1058,49 @@ virtio_transport_recv_enqueue(struct vsock_sock *vsk, struct virtio_vsock_pkt *pkt) { struct virtio_vsock_sock *vvs = vsk->trans; - bool can_enqueue, free_pkt = false; + bool free_pkt = false; pkt->len = le32_to_cpu(pkt->hdr.len); pkt->off = 0; spin_lock_bh(&vvs->rx_lock); - can_enqueue = virtio_transport_inc_rx_pkt(vvs, pkt); - if (!can_enqueue) { + if (!virtio_transport_inc_rx_pkt(vvs, pkt)) { free_pkt = true; goto out; } - /* Try to copy small packets into the buffer of last packet queued, - * to avoid wasting memory queueing the entire buffer with a small - * payload. - */ - if (pkt->len <= GOOD_COPY_LEN && !list_empty(&vvs->rx_queue)) { - struct virtio_vsock_pkt *last_pkt; + switch (le32_to_cpu(pkt->hdr.type)) { + case VIRTIO_VSOCK_TYPE_STREAM: { + /* Try to copy small packets into the buffer of last packet queued, + * to avoid wasting memory queueing the entire buffer with a small + * payload. + */ + if (pkt->len <= GOOD_COPY_LEN && !list_empty(&vvs->rx_queue)) { + struct virtio_vsock_pkt *last_pkt; - last_pkt = list_last_entry(&vvs->rx_queue, - struct virtio_vsock_pkt, list); + last_pkt = list_last_entry(&vvs->rx_queue, + struct virtio_vsock_pkt, list); - /* If there is space in the last packet queued, we copy the - * new packet in its buffer. - */ - if (pkt->len <= last_pkt->buf_len - last_pkt->len) { - memcpy(last_pkt->buf + last_pkt->len, pkt->buf, - pkt->len); - last_pkt->len += pkt->len; - free_pkt = true; - goto out; + /* If there is space in the last packet queued, we copy the + * new packet in its buffer. + */ + if (pkt->len <= last_pkt->buf_len - last_pkt->len) { + memcpy(last_pkt->buf + last_pkt->len, pkt->buf, + pkt->len); + last_pkt->len += pkt->len; + free_pkt = true; + goto out; + } } + + break; + } + case VIRTIO_VSOCK_TYPE_SEQPACKET: { + break; + } + default: + goto out; } list_add_tail(&pkt->list, &vvs->rx_queue); @@ -1101,6 +1119,14 @@ virtio_transport_recv_connected(struct sock *sk, int err = 0; switch (le16_to_cpu(pkt->hdr.op)) { + case VIRTIO_VSOCK_OP_SEQ_BEGIN: { + struct virtio_vsock_sock *vvs = vsk->trans; + + spin_lock_bh(&vvs->rx_lock); + list_add_tail(&pkt->list, &vvs->rx_queue); + spin_unlock_bh(&vvs->rx_lock); + return err; + } case VIRTIO_VSOCK_OP_RW: virtio_transport_recv_enqueue(vsk, pkt); sk->sk_data_ready(sk); @@ -1247,6 +1273,12 @@ virtio_transport_recv_listen(struct sock *sk, struct virtio_vsock_pkt *pkt, return 0; } +static bool virtio_transport_valid_type(u16 type) +{ + return (type == VIRTIO_VSOCK_TYPE_STREAM) || + (type == VIRTIO_VSOCK_TYPE_SEQPACKET); +} + /* We are under the virtio-vsock's vsock->rx_lock or vhost-vsock's vq->mutex * lock. */ @@ -1272,7 +1304,7 @@ void virtio_transport_recv_pkt(struct virtio_transport *t, le32_to_cpu(pkt->hdr.buf_alloc), le32_to_cpu(pkt->hdr.fwd_cnt)); - if (le16_to_cpu(pkt->hdr.type) != VIRTIO_VSOCK_TYPE_STREAM) { + if (!virtio_transport_valid_type(le16_to_cpu(pkt->hdr.type))) { (void)virtio_transport_reset_no_sock(t, pkt); goto free_pkt; } @@ -1289,6 +1321,11 @@ void virtio_transport_recv_pkt(struct virtio_transport *t, } } + if (virtio_transport_get_type(sk) != le16_to_cpu(pkt->hdr.type)) { + (void)virtio_transport_reset_no_sock(t, pkt); + goto free_pkt; + } + vsk = vsock_sk(sk); space_available = virtio_transport_space_update(sk, pkt); From patchwork Fri Jan 15 05:45:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseny Krasnov X-Patchwork-Id: 364412 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, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 6A1D1C433E9 for ; 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Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , Arseny Krasnov , Andra Paraschiv , Colin Ian King , Jeff Vander Stoep CC: , , , , , Subject: [RFC PATCH v2 12/13] vhost/vsock: support for SOCK_SEQPACKET socket. Date: Fri, 15 Jan 2021 08:45:09 +0300 Message-ID: <20210115054512.1457268-1-arseny.krasnov@kaspersky.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210115053553.1454517-1-arseny.krasnov@kaspersky.com> References: <20210115053553.1454517-1-arseny.krasnov@kaspersky.com> MIME-Version: 1.0 X-Originating-IP: [10.64.68.128] 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: 5.9.16, Database issued on: 01/15/2021 05:18:27 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 10 X-KSE-AntiSpam-Info: Lua profiles 161159 [Jan 15 2021] X-KSE-AntiSpam-Info: LuaCore: 420 420 0b339e70b2b1bb108f53ec9b40aa316bba18ceea 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: arseniy-pc.avp.ru:7.1.1; kaspersky.com:7.1.1; 127.0.0.199:7.1.2; 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: 01/15/2021 05:21:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 15.01.2021 2:12:00 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: 2021/01/15 05:03:00 X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, bases: 2021/01/15 02:12:00 #16041563 X-KLMS-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This adds transport ops and removes ignore of non-stream type of packets. Signed-off-by: Arseny Krasnov --- drivers/vhost/vsock.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c index 5e78fb719602..4d60a99aed14 100644 --- a/drivers/vhost/vsock.c +++ b/drivers/vhost/vsock.c @@ -354,8 +354,7 @@ vhost_vsock_alloc_pkt(struct vhost_virtqueue *vq, return NULL; } - if (le16_to_cpu(pkt->hdr.type) == VIRTIO_VSOCK_TYPE_STREAM) - pkt->len = le32_to_cpu(pkt->hdr.len); + pkt->len = le32_to_cpu(pkt->hdr.len); /* No payload */ if (!pkt->len) @@ -424,6 +423,10 @@ static struct virtio_transport vhost_transport = { .stream_is_active = virtio_transport_stream_is_active, .stream_allow = virtio_transport_stream_allow, + .seqpacket_seq_send_len = virtio_transport_seqpacket_seq_send_len, + .seqpacket_seq_get_len = virtio_transport_seqpacket_seq_get_len, + .seqpacket_dequeue = virtio_transport_seqpacket_dequeue, + .notify_poll_in = virtio_transport_notify_poll_in, .notify_poll_out = virtio_transport_notify_poll_out, .notify_recv_init = virtio_transport_notify_recv_init,