Nvidia NIC driver ^tx checksum and tso4 issues^

louis2

I am using Connect-X3 and Connect-X4 network cards and I noticed a lot of messages like the one's below in the pfSense system logs.

kernel mce0 ERR: mlx5e_ioctl:3585:(pid 748): tso4 disabled due to -txcsum.

kernel mce0 ERR: mlx5e_ioctl:3618:(pid 612): enable txcsum first.

kernel mce1 INFO: mlx5e_open_locked:3260:(pid 33800): NOTE: There are more RSS buckets(8) than channels(4) available

stephenw10

That seems expected if you have checksum hardware offloading disabled?

louis2

@stephenw10

No off course not. What can be offloaded should be offloaded.

stephenw10

Hmm, what does ifconfig -vma show for those NICs?

When do you see those log entries? They could just be in the boot log before the interface settings have been applied.

louis2

@stephenw10

I did create that file, its a large one (you can have it if you want). However perhaps you are right and it is only during boot.

So I will keep an eye on that in the coming days and would like to pause this for the moment

stephenw10

Probably just that then. But you should see the set options and capabilities for those NICs like:

[2.8.0-RELEASE][admin@t70.stevew.lan]/root: ifconfig -vm igb0
igb0: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
	description: WAN
	options=4e100bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWFILTER,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG>
	capabilities=4f53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,NETMAP,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG>

So there you can see the NIC is both checksum offload and TSO capable but only checksum is enabled.