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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 EC7EBC33CB6 for ; Thu, 16 Jan 2020 16:50:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B8EE020663 for ; Thu, 16 Jan 2020 16:50:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579193442; bh=dAs/zNG/m+VHy0DYPM6tcOxHAC0qIG1JB0YFDX/OnZw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=aYSDR+6lnu1DX2jphuMappAiZ7ZGChpxlFeM+YGQYVHAyHVaOUy7IlCyIML7exYsC R2oUaY+mTwjY5zOjdlBo9W6jRNxbx8nCOwhYNPA+6GRY6Jj0NFlpEdMS4wml4tmkIW 8Pr4XL42bRje8cLMgbvzqrspmfwEmBPDa2f6YASo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729837AbgAPQrF (ORCPT ); Thu, 16 Jan 2020 11:47:05 -0500 Received: from mail.kernel.org ([198.145.29.99]:56646 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729547AbgAPQrE (ORCPT ); Thu, 16 Jan 2020 11:47:04 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D7EBE207FF; Thu, 16 Jan 2020 16:46:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579193223; bh=dAs/zNG/m+VHy0DYPM6tcOxHAC0qIG1JB0YFDX/OnZw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jLyrxKrUf6JvIKh67lmBcPTEKw/NvUZPci1U67WINGt4UbDmDTDiYPuXH/OcWIixm YG+9WY0Y3g2qNtAW4UNjHGe2ei1fMk0RsGQVqLSB2KjVnelOTcKzJD0WUb/pqkW+Cf dveCKyON+GdWJXN48yCkOjkyRatbKTVRKEhAG6TY= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ilias Apalodimas , Jakub Kicinski , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org, bpf@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 049/205] net: netsec: Correct dma sync for XDP_TX frames Date: Thu, 16 Jan 2020 11:40:24 -0500 Message-Id: <20200116164300.6705-49-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116164300.6705-1-sashal@kernel.org> References: <20200116164300.6705-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org From: Ilias Apalodimas [ Upstream commit d9496f3ecfe4823c1e12aecbcc29220147fa012c ] bpf_xdp_adjust_head() can change the frame boundaries. Account for the potential shift properly by calculating the new offset before syncing the buffer to the device for XDP_TX Fixes: ba2b232108d3 ("net: netsec: add XDP support") Signed-off-by: Ilias Apalodimas Reviewed-by: Jakub Kicinski Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/socionext/netsec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c index f9e6744d8fd6..41ddd8fff2a7 100644 --- a/drivers/net/ethernet/socionext/netsec.c +++ b/drivers/net/ethernet/socionext/netsec.c @@ -847,8 +847,8 @@ static u32 netsec_xdp_queue_one(struct netsec_priv *priv, enum dma_data_direction dma_dir = page_pool_get_dma_dir(rx_ring->page_pool); - dma_handle = page_pool_get_dma_addr(page) + - NETSEC_RXBUF_HEADROOM; + dma_handle = page_pool_get_dma_addr(page) + xdpf->headroom + + sizeof(*xdpf); dma_sync_single_for_device(priv->dev, dma_handle, xdpf->len, dma_dir); tx_desc.buf_type = TYPE_NETSEC_XDP_TX; -- 2.20.1