From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.3 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 69202C432C3 for ; Tue, 26 Nov 2019 10:21:26 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 34BD020727 for ; Tue, 26 Nov 2019 10:21:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="fru48dzl" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 34BD020727 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:52240 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iZXyG-00043F-SM for qemu-devel@archiver.kernel.org; Tue, 26 Nov 2019 05:21:24 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:57458) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iZXsK-0005g9-Mw for qemu-devel@nongnu.org; Tue, 26 Nov 2019 05:15:17 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iZXmb-0003HF-WE for qemu-devel@nongnu.org; Tue, 26 Nov 2019 05:09:22 -0500 Received: from mail-pf1-x444.google.com ([2607:f8b0:4864:20::444]:40834) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iZXmb-0003Gl-Qx for qemu-devel@nongnu.org; Tue, 26 Nov 2019 05:09:21 -0500 Received: by mail-pf1-x444.google.com with SMTP id i187so4767844pfc.7 for ; Tue, 26 Nov 2019 02:09:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=svo/DJZyqQpUo02aclcCc0QABc66WKSHZ6zQKD7a+Ow=; b=fru48dzlPmxdsRDObkYQrHO7JapBQH3c9E855CQRNtWbayYXM0dPryQmi5/whFOlpS GH/fVBCqvL0AWAPenfff2xRlbHbJeyN0FRY1MhHhuPk2ZlwRT9JdOfr9u4eKWjej1HTC q8G8loaTXtCX8EcOlrVw8hLTEh4GJrvM6aVuqV67oJNuisl5NmKblB7E+689x4Qa7LIa 4SQq9JNWkXDoaqj5RJYNpcE68Ha/YC5zbmY6IAUN1+QQ+4kJDzhyh+LTm5ZfOUaLxAhM sWkA++CI/tDwSaPETlK0YUOCfMRpR+0Q+b9L8Xpbo+zpd9pTLP+X50M8f7aw4NZ0ZvnG QC3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=svo/DJZyqQpUo02aclcCc0QABc66WKSHZ6zQKD7a+Ow=; b=Pw+/VHpewCCUoDqew8WBcgQ4L7QEunkTa5Yai/wYfhFJBwln7Csb7TdUjo+DouwXvh tDEiCJCpzVMZhBF3xkj1QwurUUDOUVEpwCwYE0ZJMYWpyqRXgmKvLBFOJSM1kvdcCUp8 lV4fEiLJFJzQ/Wkm16avy7S+GVBhkGYyCjUE5a4wc7VACyyi4Hfry1X+gfxtcbIfSMn9 ujGVM0CP9ZiXwlp0uq+ShzW7+RN0uKNqaYLH4o5uTDGbChNSoFf4eiyZp/t18qzLSd49 183r4i6SNDhnUtcyZxFm+Em/h0Zdi9Fv494k0DFjZLYP7lkjvMmsY2954MkFMpvY3f0W Xqvw== X-Gm-Message-State: APjAAAVqleTR2agp6cWBjH33aMpIIvmIfeTWJdotIHOpVRm88Q0i9oxg FGbGOy+Spdan9zDa5zrnWO8= X-Google-Smtp-Source: APXvYqx1KJySu2VSUlGFNdx7ooxLmUOdCiiNdkl+RVxrLvkON5zLWT+2U/MjtFSUA7MS5Y/R8paLmg== X-Received: by 2002:a63:ff26:: with SMTP id k38mr39206249pgi.128.1574762960938; Tue, 26 Nov 2019 02:09:20 -0800 (PST) Received: from localhost.localdomain ([222.151.198.97]) by smtp.gmail.com with ESMTPSA id s24sm11848485pfh.108.2019.11.26.02.09.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Nov 2019 02:09:20 -0800 (PST) From: Prashant Bhole To: "David S . Miller" , "Michael S . Tsirkin" Subject: [RFC net-next 10/18] tun: handle XDP_TX action of offloaded program Date: Tue, 26 Nov 2019 19:07:36 +0900 Message-Id: <20191126100744.5083-11-prashantbhole.linux@gmail.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191126100744.5083-1-prashantbhole.linux@gmail.com> References: <20191126100744.5083-1-prashantbhole.linux@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::444 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Song Liu , Jakub Kicinski , Jesper Dangaard Brouer , Daniel Borkmann , netdev@vger.kernel.org, Jason Wang , John Fastabend , Alexei Starovoitov , qemu-devel@nongnu.org, Prashant Bhole , kvm@vger.kernel.org, Yonghong Song , Andrii Nakryiko , Martin KaFai Lau Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When offloaded program returns XDP_TX, we need to inject the packet in Rx path of tun. This patch injects such packets in Rx path using tun_xdp_one. Signed-off-by: Prashant Bhole --- drivers/net/tun.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 8d6cdd3e5139..084ca95358fe 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -2249,7 +2249,13 @@ static u32 tun_do_xdp_offload(struct tun_struct *tun, struct tun_file *tfile, case XDP_PASS: break; case XDP_TX: - /* fall through */ + tpage.page = NULL; + tpage.count = 0; + tun_xdp_one(tun, tfile, &xdp, &flush, &tpage, false); + tun_put_page(&tpage); + if (flush) + xdp_do_flush_map(); + break; case XDP_REDIRECT: /* fall through */ default: -- 2.20.1