Message ID | 20230930210308.2394919-4-avkrasnov@salutedevices.com |
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State | New |
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[2620:137:e000::3:7]) by mx.google.com with ESMTPS id cq12-20020a056a00330c00b0068a54cfcd74si23489180pfb.192.2023.09.30.14.28.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 30 Sep 2023 14:28:31 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7; Authentication-Results: mx.google.com; dkim=pass header.i=@salutedevices.com header.s=mail header.b="uvHX8JX/"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=salutedevices.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id 9A3408028E6F; Sat, 30 Sep 2023 14:10:38 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233997AbjI3VKf (ORCPT <rfc822;chrisfriedt@gmail.com> + 20 others); Sat, 30 Sep 2023 17:10:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52040 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231401AbjI3VKe (ORCPT <rfc822;linux-kernel@vger.kernel.org>); Sat, 30 Sep 2023 17:10:34 -0400 Received: from mx1.sberdevices.ru (mx1.sberdevices.ru [37.18.73.165]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5A5C2DA; Sat, 30 Sep 2023 14:10:31 -0700 (PDT) Received: from p-infra-ksmg-sc-msk01 (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id 8555B100009; Sun, 1 Oct 2023 00:10:28 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru 8555B100009 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=mail; t=1696108228; bh=s97vVZ6AdQilCZkxxPA5FVFX3AoinEVoU+I3gTxfJbg=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=uvHX8JX/v4heOGOFP3ahtkecx63S5sS4g1b3h1pboJXNbLUMYI7B/wjze/lzSHQhi y4BdXwg/izjqoyjY7TX3j/3GGxDsK4yS7xuJtBB5oTYlFxdT66Tq1fI8FEzAc+B6xo b2OGFpPwmI7Vl8ZNhVbR7CpX7/CDKSFdue0nLIa2BaSYR8Jsmg5q2pe7P6FnLzfUGa kVUBigVCXy0ifvyq/BK/LQD4f5q8F/qYawSJvWS2MQMl9XLuIQp765GPKi7dj/Fl2S 7EPxBLNMWE3//Qpe8zxb4iQjKo6dWKSdxWGyxKNE0QhNivXXZSIqsLKUC7oqcJ+thM OjmOPli7AWEDQ== 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; Sun, 1 Oct 2023 00:10:28 +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; Sun, 1 Oct 2023 00:10:27 +0300 From: Arseniy Krasnov <avkrasnov@salutedevices.com> To: Stefan Hajnoczi <stefanha@redhat.com>, Stefano Garzarella <sgarzare@redhat.com>, "David S. Miller" <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>, "Michael S. 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Series |
vsock/virtio: continue MSG_ZEROCOPY support
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Commit Message
Arseniy Krasnov
Sept. 30, 2023, 9:02 p.m. UTC
This feature totally depends on transport, so if transport doesn't support it, return error. Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> --- include/net/af_vsock.h | 7 +++++++ net/vmw_vsock/af_vsock.c | 6 ++++++ 2 files changed, 13 insertions(+)
diff --git a/include/net/af_vsock.h b/include/net/af_vsock.h index b01cf9ac2437..e302c0e804d0 100644 --- a/include/net/af_vsock.h +++ b/include/net/af_vsock.h @@ -177,6 +177,9 @@ struct vsock_transport { /* Read a single skb */ int (*read_skb)(struct vsock_sock *, skb_read_actor_t); + + /* Zero-copy. */ + bool (*msgzerocopy_allow)(void); }; /**** CORE ****/ @@ -241,4 +244,8 @@ static inline void __init vsock_bpf_build_proto(void) {} #endif +static inline bool vsock_msgzerocopy_allow(const struct vsock_transport *t) +{ + return t->msgzerocopy_allow && t->msgzerocopy_allow(); +} #endif /* __AF_VSOCK_H__ */ diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 0365382beab6..f1da06aa6b00 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -1824,6 +1824,12 @@ static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg, goto out; } + if (msg->msg_flags & MSG_ZEROCOPY && + !vsock_msgzerocopy_allow(transport)) { + err = -EOPNOTSUPP; + goto out; + } + /* Wait for room in the produce queue to enqueue our user's data. */ timeout = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT);