From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:39906 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754428AbeDJWaQ (ORCPT ); Tue, 10 Apr 2018 18:30:16 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Feras Daoud , Saeed Mahameed , Sasha Levin Subject: [PATCH 4.15 080/168] net/mlx5e: IPoIB, Use correct timestamp in child receive flow Date: Wed, 11 Apr 2018 00:23:42 +0200 Message-Id: <20180410212803.686823298@linuxfoundation.org> In-Reply-To: <20180410212800.144079021@linuxfoundation.org> References: <20180410212800.144079021@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Feras Daoud [ Upstream commit 36e564b76f1862914ad32c35bab433e07da2ebf8 ] The current implementation takes the child timestamp object from the parent since the rq in mlx5i_complete_rx_cqe belongs to the parent. This change fixes the issue by taking the correct timestamp. Fixes: 7e7f4780c340 ("net/mlx5e: IPoIB, Use hash-table to map between QPN to child netdev") Signed-off-by: Feras Daoud Signed-off-by: Saeed Mahameed Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -1196,7 +1196,9 @@ static inline void mlx5i_complete_rx_cqe u32 cqe_bcnt, struct sk_buff *skb) { + struct hwtstamp_config *tstamp; struct net_device *netdev; + struct mlx5e_priv *priv; char *pseudo_header; u32 qpn; u8 *dgid; @@ -1215,6 +1217,9 @@ static inline void mlx5i_complete_rx_cqe return; } + priv = mlx5i_epriv(netdev); + tstamp = &priv->tstamp; + g = (be32_to_cpu(cqe->flags_rqpn) >> 28) & 3; dgid = skb->data + MLX5_IB_GRH_DGID_OFFSET; if ((!g) || dgid[0] != 0xff) @@ -1235,7 +1240,7 @@ static inline void mlx5i_complete_rx_cqe skb->ip_summed = CHECKSUM_COMPLETE; skb->csum = csum_unfold((__force __sum16)cqe->check_sum); - if (unlikely(mlx5e_rx_hw_stamp(rq->tstamp))) + if (unlikely(mlx5e_rx_hw_stamp(tstamp))) skb_hwtstamps(skb)->hwtstamp = mlx5_timecounter_cyc2time(rq->clock, get_cqe_ts(cqe));