From nobody Sat Sep 13 04:33:24 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08F2BEB64DD for ; Sat, 1 Jul 2023 06:54:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230083AbjGAGyF (ORCPT ); Sat, 1 Jul 2023 02:54:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46906 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230268AbjGAGwf (ORCPT ); Sat, 1 Jul 2023 02:52:35 -0400 Received: from mx1.sberdevices.ru (mx2.sberdevices.ru [45.89.224.132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A29159D3; Fri, 30 Jun 2023 23:46:05 -0700 (PDT) Received: from p-infra-ksmg-sc-msk02 (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id 3F16D120015; Sat, 1 Jul 2023 09:45:16 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru 3F16D120015 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1688193916; bh=/JpJG9jMN3yK/D5/IqeMHJNNEU4HVxLFDCFOJJsYMMQ=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=ZiJnxqDfC8/fk0p4Z2U0V9mZgoxbdJLwKNTBQFiJAwUH86bQkli4jJHVz2WZXWthG sse0JNSTkPz5zXsSoek1z2E370pDg/SThVIDdP+BO/hSFEUzIms5dEVE73cWRl+bos HjT4eDonyssTZa91wiUMC3y0WMeTXcMrYg/0QHfeW0hwEpQDt16CwUhmjwhBQ0X6Bb 5niPWW1fs7NVukCWljzTYbB6PSE+JyTNpgqsLPhCzQQsbXZB5fk1rRlGkcmd2AXrdB oRw7afZ9kF9N0XErgMW72WxMHSuTW7tbwTYgWfoYcq6KHQLbwy20RGCuo7XU3uQVze 7nTiKgHyyZKEg== 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, 1 Jul 2023 09:45:15 +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, 1 Jul 2023 09:44:50 +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: , , , , , , , Arseniy Krasnov Subject: [RFC PATCH v5 12/17] vsock/loopback: support MSG_ZEROCOPY for transport Date: Sat, 1 Jul 2023 09:39:42 +0300 Message-ID: <20230701063947.3422088-13-AVKrasnov@sberdevices.ru> X-Mailer: git-send-email 2.35.0 In-Reply-To: <20230701063947.3422088-1-AVKrasnov@sberdevices.ru> References: <20230701063947.3422088-1-AVKrasnov@sberdevices.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: 178380 [Jun 30 2023] X-KSMG-AntiSpam-Version: 5.9.59.0 X-KSMG-AntiSpam-Envelope-From: AVKrasnov@sberdevices.ru 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: 517 517 b0056c19d8e10afbb16cb7aad7258dedb0179a79, {Tracking_from_domain_doesnt_match_to}, sberdevices.ru:7.1.1,5.0.1;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;127.0.0.199:7.1.2;100.64.160.123:7.1.2;p-i-exch-sc-m01.sberdevices.ru:7.1.1,5.0.1, FromAlignment: s, {Tracking_white_helo}, 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: 2023/07/01 04:02:00 #21597763 X-KSMG-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add 'msgzerocopy_allow()' callback for loopback transport. Signed-off-by: Arseniy Krasnov --- Changelog: v4 -> v5: * Move 'msgzerocopy_allow' right after seqpacket callbacks. * Don't use prototype for 'vsock_loopback_msgzerocopy_allow()'. net/vmw_vsock/vsock_loopback.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/vmw_vsock/vsock_loopback.c b/net/vmw_vsock/vsock_loopback.c index 5c6360df1f31..048640167411 100644 --- a/net/vmw_vsock/vsock_loopback.c +++ b/net/vmw_vsock/vsock_loopback.c @@ -47,6 +47,10 @@ static int vsock_loopback_cancel_pkt(struct vsock_sock *= vsk) } =20 static bool vsock_loopback_seqpacket_allow(u32 remote_cid); +static bool vsock_loopback_msgzerocopy_allow(void) +{ + return true; +} =20 static struct virtio_transport loopback_transport =3D { .transport =3D { @@ -79,6 +83,8 @@ static struct virtio_transport loopback_transport =3D { .seqpacket_allow =3D vsock_loopback_seqpacket_allow, .seqpacket_has_data =3D virtio_transport_seqpacket_has_data, =20 + .msgzerocopy_allow =3D vsock_loopback_msgzerocopy_allow, + .notify_poll_in =3D virtio_transport_notify_poll_in, .notify_poll_out =3D virtio_transport_notify_poll_out, .notify_recv_init =3D virtio_transport_notify_recv_init, --=20 2.25.1