Re: [systemd-devel] TCPSegmentationOffload seem to be ignored in link-file

2023-08-08 Thread basti 

On 08.08.23 15:47, basti wrote:

Hello,
I move my network config from if-up to systemd and create a link file as 
follows:


root@s920:~# cat /etc/systemd/network/10-enp1s0f1.link
[Match]
MACAddress=00:19:99:b7:e0:99

[Link]
GenericSegmentationOffload=false
GenericReceiveOffload=false
TCPSegmentationOffload=false
root@s920:~#

The file seems to be used:

root@s920:~# networkctl status enp1s0f1
● 3: enp1s0f1
  Link File: /etc/systemd/network/10-enp1s0f1.link
   Network File: /etc/systemd/network/enp1s0f1.network
  State: routable (configured)
   Online state: online
   Type: ether
   Path: pci-:01:00.1
     Driver: igb
     Vendor: Intel Corporation
  Model: 82580 Gigabit Network Connection
   Hardware Address: 00:19:99:b7:e0:99 (Fujitsu Technology 
Solutions GmbH)

    MTU: 1500 (min: 68, max: 9216)
  QDisc: mq
   IPv6 Address Generation Mode: eui64
   Number of Queues (Tx/Rx): 8/8
   Auto negotiation: yes
  Speed: 1Gbps
     Duplex: full
   Port: tp
    Address: 192.168.1.10
     fe80::219:99ff:feb7:e099
  Activation Policy: up
    Required For Online: yes
  DHCP6 Client DUID: 
DUID-EN/Vendor:ab117b7b45fb726da9a5


Aug 07 21:37:52 s920 systemd-networkd[831]: enp1s0f1: Configuring with 
/etc/systemd/network/enp1s0f1.network.

Aug 07 21:37:52 s920 systemd-networkd[831]: enp1s0f1: Link UP
Aug 07 21:37:55 s920 systemd-networkd[831]: enp1s0f1: Gained carrier
Aug 07 21:37:56 s920 systemd-networkd[831]: enp1s0f1: Gained IPv6LL
root@s920:~#


root@s920:~# ethtool -k enp1s0f1 | grep offload
tcp-segmentation-offload: on
generic-segmentation-offload: off
generic-receive-offload: off
large-receive-offload: off [fixed]
rx-vlan-offload: on
tx-vlan-offload: on
l2-fwd-offload: off [fixed]
hw-tc-offload: off [fixed]
esp-hw-offload: off [fixed]
esp-tx-csum-hw-offload: off [fixed]
rx-udp_tunnel-port-offload: off [fixed]
tls-hw-tx-offload: off [fixed]
tls-hw-rx-offload: off [fixed]
macsec-hw-offload: off [fixed]
hsr-tag-ins-offload: off [fixed]
hsr-tag-rm-offload: off [fixed]
hsr-fwd-offload: off [fixed]
hsr-dup-offload: off [fixed]
root@s920:~#

But tcp-segmentation-offload is still on or re-enabled by someone?
any ideas?

systemd is 252.12-1 (debian12)

Best regards


FYI:
Add TCP6SegmentationOffload=false
fix it.

We found this bug
https://github.com/systemd/systemd/issues/6854#issuecomment-353603816

Best Regards,

Re: [systemd-devel] TCPSegmentationOffload seem to be ignored in link-file

2023-08-08 Thread Tomasz Pala 
On Tue, Aug 08, 2023 at 15:47:22 +0200, basti wrote:

> root@s920:~# cat /etc/systemd/network/10-enp1s0f1.link
> [Match]
> MACAddress=00:19:99:b7:e0:99

I'd reccomend using PermanentMACAddress=, as MACAddress is subject to
change and it leads to very hard to diagnose issues (like cyclic
matching of different files with consecutive invocations).

> Aug 07 21:37:52 s920 systemd-networkd[831]: enp1s0f1: Configuring with 
> /etc/systemd/network/enp1s0f1.network.
[...]
> But tcp-segmentation-offload is still on or re-enabled by someone?
> any ideas?

Are you aware that .link files are processed by udev?
No networkctl verb can reread this, use udevadm trigger.

-- 
Tomasz Pala