** Tags added: kernel-daily-bug
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https://bugs.launchpad.net/bugs/1851446
Title:
Backport MPLS patches from 5.3 to 4.15
Status in linux package in Ubuntu:
Invalid
Status in linux source package in Bionic:
Fix Released
Status in linux source package in Disco:
Won't Fix
Bug description:
== SRU Justification ==
Mellanox is requesting a backport of the following commit IDs from 5.3
back to 5.0 and 4.15:
* 5dc9520bf04a ("net/mlx5e: Report netdevice MPLS features")
* 8b6912a50193 ("net: vlan: Inherit MPLS features from parent device")
* 2e770b507ccd ("net: bonding: Inherit MPLS features from slave devices")
* e4683f35f8e5 ("net/mlx5e: Move to HW checksumming advertising")
Netdevice HW MPLS features are not passed from device driver's netdevice
to upper netdevice, specifically VLAN and bonding netdevice which are
created by the kernel when needed.
This prevents enablement and usage of HW offloads, such as TSO and
checksumming for MPLS tagged traffic when running via VLAN or bonding
interface.
The patches introduce changes to the initialization steps of the VLAN
and bonding netdevices to inherit the MPLS features from lower
netdevices to allow the HW offloads.
== Fix ==
* 5dc9520bf04a ("net/mlx5e: Report netdevice MPLS features")
* 8b6912a50193 ("net: vlan: Inherit MPLS features from parent device")
* 2e770b507ccd ("net: bonding: Inherit MPLS features from slave devices")
* e4683f35f8e5 ("net/mlx5e: Move to HW checksumming advertising")
The first two patches can be cherry-picked into Disco, and the rest
will require some context adjustment.
== Test ==
Test kernels can be found here:
https://people.canonical.com/~phlin/kernel/lp-1851446-MPLS-0407/
Kernel tested with positive test result and approved by their QA.
== Regression Potential ==
Low, changes just for adding MPLS feature and comes with positive
test result.
== Original Bug Report ==
Mellanox is requesting a backport of the following commit IDs from 5.3 back
to 4.15.
Netdevice HW MPLS features are not passed from device driver's
netdevice to upper netdevice, specifically VLAN and bonding netdevice
which are created by the kernel when needed.
This prevents enablement and usage of HW offloads, such as TSO and
checksumming for MPLS tagged traffic when running via VLAN or bonding
interface.
The patches introduce changes to the initialization steps of the VLAN and
bonding netdevices to inherit the MPLS features from lower netdevices to
allow the HW offloads.
Ariel Levkovich (2):
net: bonding: Inherit MPLS features from slave devices
net: vlan: Inherit MPLS features from parent device
drivers/net/bonding/bond_main.c | 11 +++++++++++
net/8021q/vlan_dev.c | 1 +
2 files changed, 12 insertions(+)
https://www.mail-archive.com/[email protected]/msg299084.html
Commit IDs (All landed in 5.3)
600bb0318c18e9616d97ad123caaa7c5f7bf222c
8b6912a5019356d7adb1b8a146c9eef5e679bf98
2e770b507ccde8eedc129946e4b78ceed0a22df2
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