From patchwork Sat Oct 7 17:21:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseniy Krasnov X-Patchwork-Id: 13412453 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D6E9731A7C for ; Sat, 7 Oct 2023 17:28:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=salutedevices.com header.i=@salutedevices.com header.b="MDoetXux" Received: from mx1.sberdevices.ru (mx2.sberdevices.ru [45.89.224.132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 68186A6; Sat, 7 Oct 2023 10:28:49 -0700 (PDT) Received: from p-infra-ksmg-sc-msk02 (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id DE01D120009; Sat, 7 Oct 2023 20:28:46 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru DE01D120009 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=mail; t=1696699726; bh=qp4gPdJCdlBgnNry5u1H6tbvvLqGQ0NsSlDugnr+6M8=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=MDoetXuxFRP5g3LAEUTXjvr7GIJZ9e5vNtif4uN+gY+l9CigVHMKdk+BKUs8+2JyE Catu1XOgahXGn7wOs2b+12nc6MKp9lI5sAwWevd5AOeDhRNGxdTHV5wLJvLSgsLBqJ y/B3TSboaGv0OFsg7Im++/+ZZJei5vS0IHxF/eYLkpnLb9NnLdaCOKuU4Uaqhkzcze eFrQFVf8kdbNuwWMaufrQCS2hvSbuTVBWH8XqFtcicBnh1w+Gal/3h9f4ubOPP0TdX t6DYp5iqikpg6PZ0KoJQOZnE37hpElv8czMNMqNRvGxVOESlmNpo1x05TmlonFJnzO Ft7ptSwg/KBFA== Received: from p-i-exch-sc-m01.sberdevices.ru (p-i-exch-sc-m01.sberdevices.ru [172.16.192.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.sberdevices.ru (Postfix) with ESMTPS; Sat, 7 Oct 2023 20:28:46 +0300 (MSK) Received: from localhost.localdomain (100.64.160.123) by p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.30; Sat, 7 Oct 2023 20:28:46 +0300 From: Arseniy Krasnov To: Stefan Hajnoczi , Stefano Garzarella , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Michael S. Tsirkin" , Jason Wang , Bobby Eshleman CC: , , , , , , Subject: [PATCH net-next v3 02/12] vsock: read from socket's error queue Date: Sat, 7 Oct 2023 20:21:29 +0300 Message-ID: <20231007172139.1338644-3-avkrasnov@salutedevices.com> X-Mailer: git-send-email 2.35.0 In-Reply-To: <20231007172139.1338644-1-avkrasnov@salutedevices.com> References: <20231007172139.1338644-1-avkrasnov@salutedevices.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [100.64.160.123] X-ClientProxiedBy: p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) To p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 180453 [Oct 07 2023] X-KSMG-AntiSpam-Version: 6.0.0.2 X-KSMG-AntiSpam-Envelope-From: avkrasnov@salutedevices.com X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 535 535 da804c0ea8918f802fc60e7a20ba49783d957ba2, {Tracking_from_domain_doesnt_match_to}, salutedevices.com:7.1.1;100.64.160.123:7.1.2;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;127.0.0.199:7.1.2;p-i-exch-sc-m01.sberdevices.ru:5.0.1,7.1.1, FromAlignment: s, ApMailHostAddress: 100.64.160.123 X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean X-KSMG-LinksScanning: Clean X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.0.1.6960, bases: 2023/10/07 16:48:00 #22085983 X-KSMG-AntiVirus-Status: Clean, skipped X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org This adds handling of MSG_ERRQUEUE input flag in receive call. This flag is used to read socket's error queue instead of data queue. Possible scenario of error queue usage is receiving completions for transmission with MSG_ZEROCOPY flag. This patch also adds new defines: 'SOL_VSOCK' and 'VSOCK_RECVERR'. Signed-off-by: Arseniy Krasnov --- Changelog: v1 -> v2: * Place new defines for userspace to the existing file 'vm_sockets.h' instead of creating new one. v2 -> v3: * Add comments to describe 'SOL_VSOCK' and 'VSOCK_RECVERR' in the file 'vm_sockets.h'. * Reorder includes in 'af_vsock.c' in alphabetical order. include/linux/socket.h | 1 + include/uapi/linux/vm_sockets.h | 12 ++++++++++++ net/vmw_vsock/af_vsock.c | 6 ++++++ 3 files changed, 19 insertions(+) diff --git a/include/linux/socket.h b/include/linux/socket.h index 39b74d83c7c4..cfcb7e2c3813 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -383,6 +383,7 @@ struct ucred { #define SOL_MPTCP 284 #define SOL_MCTP 285 #define SOL_SMC 286 +#define SOL_VSOCK 287 /* IPX options */ #define IPX_TYPE 1 diff --git a/include/uapi/linux/vm_sockets.h b/include/uapi/linux/vm_sockets.h index c60ca33eac59..d9d703b2d45a 100644 --- a/include/uapi/linux/vm_sockets.h +++ b/include/uapi/linux/vm_sockets.h @@ -191,4 +191,16 @@ struct sockaddr_vm { #define IOCTL_VM_SOCKETS_GET_LOCAL_CID _IO(7, 0xb9) +/* For reading completion in case of MSG_ZEROCOPY flag transmission. + * This is value of 'cmsg_level' field of the 'struct cmsghdr'. + */ + +#define SOL_VSOCK 287 + +/* For reading completion in case of MSG_ZEROCOPY flag transmission. + * This is value of 'cmsg_type' field of the 'struct cmsghdr'. + */ + +#define VSOCK_RECVERR 1 + #endif /* _UAPI_VM_SOCKETS_H */ diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index d841f4de33b0..38486efd3d05 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -89,6 +89,7 @@ #include #include #include +#include #include #include #include @@ -110,6 +111,7 @@ #include #include #include +#include static int __vsock_bind(struct sock *sk, struct sockaddr_vm *addr); static void vsock_sk_destruct(struct sock *sk); @@ -2137,6 +2139,10 @@ vsock_connectible_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, int err; sk = sock->sk; + + if (unlikely(flags & MSG_ERRQUEUE)) + return sock_recv_errqueue(sk, msg, len, SOL_VSOCK, VSOCK_RECVERR); + vsk = vsock_sk(sk); err = 0;