Re: hw csum failure + conntrack with more debugging information

On 18.11.2018 02:12, Eric Dumazet wrote:

Please try this patch, we suspect mlx4 support for CHECKSUM_COMPLETE is 
wrong.

(Only IPv4 handled, but I suspect a similar fix is needed for IPv6)

Not conclusive, but.. Have not seen any splats or other weirdness since 
applying this patch 3 days ago. Routing IPv4 only.

root@pps:~# ethtool -S p0xe0 |grep sum
     rx_csum_good: 530992724
     rx_csum_none: 153315
     rx_csum_complete: 188156
     tx_chksum_offload: 213784665
root@pps:~# ethtool -S p0xe1 |grep sum
     rx_csum_good: 873708754
     rx_csum_none: 160324
     rx_csum_complete: 42605
     tx_chksum_offload: 160708