On Tue, Jul 3, 2018 at 10:45 PM, Konstantin Khlebnikov
<khlebni...@yandex-team.ru> wrote:
> I'm seeing problems with tunnelled traffic with Mellanox Technologies
> MT27710 Family [ConnectX-4 Lx] using vanilla driver from linux 4.4.y
>
> Packets with payload bigger than 116 bytes are not exmited.
> Smaller packets and normal ipv6 works fine.
>
Hi Konstantin,
Is this true for all ipv6 traffic or just ipv4-ipv6 tunnels ?
what is the skb_network_offset(skb) for such packet ?
> In linux 4.9, 4.14 and out-of-tree driver everything seems fine for now.
> It's hard to guess or bisect commit: there are a lot of changes and
> something wrong with driver or swiotlb in 4.7..4.8.
> 4.6 is affected too - so this should be something between 4.6 and 4.9
>
> Probably this case was fixed indirectly by adding some kind of offload and
> non-offloaded path is still broken.
> Please give me a hint: which commit could it be.
>
I suspect it works in a newer kernel since we introduced on 4.7/4.8:
commit e3a19b53cbb0e6738b7a547f262179065b72e3fa
Author: Matthew Finlay <m...@mellanox.com>
Date: Thu Jun 30 17:34:47 2016 +0300
net/mlx5e: Copy all L2 headers into inline segment
ConnectX4-Lx uses an inline wqe mode that currently defaults to
requiring the entire L2 header be included in the wqe.
This patch fixes mlx5e_get_inline_hdr_size() to account for
all L2 headers (VLAN, QinQ, etc) using skb_network_offset(skb).
Fixes: e586b3b0baee ("net/mlx5: Ethernet Datapath files")
Signed-off-by: Matthew Finlay <m...@mellanox.com>
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
commit ae76715d153e33c249b6850361e4d8d775388b5a
Author: Hadar Hen Zion <had...@mellanox.com>
Date: Sun Jul 24 16:12:39 2016 +0300
net/mlx5e: Check the minimum inline header mode before xmit
and then some fixes on top of it, such as:
commit f600c6088018d1dbc5777d18daa83660f7ea4a64
Author: Eran Ben Elisha <era...@mellanox.com>
Date: Thu Jan 25 11:18:09 2018 +0200
net/mlx5e: Verify inline header size do not exceed SKB linear size
anyhow, can you try the above patches one by one on 4.4.y and see if it helps ?
Thanks,
Saeed
