This is a note to let you know that I've just added the patch titled
net/mlx5e: IPoIB, Use correct timestamp in child receive flow
to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-mlx5e-ipoib-use-correct-timestamp-in-child-receive-flow.patch
and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Apr 9 10:16:32 CEST 2018
From: Feras Daoud <ferasda@xxxxxxxxxxxx>
Date: Tue, 31 Oct 2017 14:57:27 +0200
Subject: net/mlx5e: IPoIB, Use correct timestamp in child receive flow
From: Feras Daoud <ferasda@xxxxxxxxxxxx>
[ 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 <ferasda@xxxxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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));
Patches currently in stable-queue which might be from ferasda@xxxxxxxxxxxx are
queue-4.15/net-mlx5e-ipoib-use-correct-timestamp-in-child-receive-flow.patch