Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754630AbdGUPWi (ORCPT ); Fri, 21 Jul 2017 11:22:38 -0400 Received: from nbd.name ([46.4.11.11]:60381 "EHLO nbd.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753904AbdGUPUr (ORCPT ); Fri, 21 Jul 2017 11:20:47 -0400 From: John Crispin To: "David S . Miller" , Eric Dumazet Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, John Crispin Subject: [RFC 2/2] net-next: mediatek: populate the shared Date: Fri, 21 Jul 2017 17:20:35 +0200 Message-Id: <20170721152035.6645-3-john@phrozen.org> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170721152035.6645-1-john@phrozen.org> References: <20170721152035.6645-1-john@phrozen.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1459 Lines: 37 When enabling HW flow offloading, the traffic coming in on either of the GMACs is first sent to the PPE for processing. Any traffic not offloaded at this point will then be forwarded to the normal RX DMA ring for SW path processing. In this case the PPE will send additional data inside RXD4 that is later required by the upper layers to populate the flow offloading engines HW tables properly. This patch sets the skb_shared_info's dma_desc field so that we can use the value later on. Signed-off-by: John Crispin --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index a455d1b4f1d8..42d162cd6363 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -918,6 +918,7 @@ static void mtk_update_rx_cpu_idx(struct mtk_eth *eth) static int mtk_poll_rx(struct napi_struct *napi, int budget, struct mtk_eth *eth) { + struct skb_shared_info *sh; struct mtk_rx_ring *ring; int idx; struct sk_buff *skb; @@ -1000,6 +1001,9 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, else skb_checksum_none_assert(skb); skb->protocol = eth_type_trans(skb, netdev); + sh = skb_shinfo(skb); + + sh->dma_desc = trxd.rxd4; if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX && RX_DMA_VID(trxd.rxd3)) -- 2.11.0