Questions tagged [tcp-offload-engine]

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tcpdump: invalid cksum from client to localhost interface even after disabling offloading

I'm having a strange issue. In linux I have two windows open. one running tcpdump and one running curl. I used curl to try to make a connection to local host and tcpdump logs invalid checksum errors. ...
Mike's user avatar
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What problems can the use of TOE cause?

What problems can the use of TOE cause? As known, TOE (TCP offload engine) offloads the processing of TCP/IP stack from CPU to the NIC: https://wiki.linuxfoundation.org/networking/toe CPU has more ...
Alex's user avatar
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What are the imlications of having different TCP Chimey Offload settings?

I have a SQL Server (2008 R2) WSFC on Windows Server 2008 R2 on which I am experiencing some storage latency between the OS and SAN. The SAN admin has noted that the SAN is experiencing very little ...
swasheck's user avatar
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Disabled all TCP Offloading and still get 65Kb packets

I'm capturing packets in a Tensorflow two-node training. I want to capture the packet sizes over the wire (< MTU) from the hosts. Because of that, I turned off all of the offloading with ethtool. ...
morteza hosseini's user avatar
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How to check a given connection has been offloaded to network card

From what I read, some part of the tcp protocol operation can be offloaded from kernel to network card driver thanks to TOE (or GSO, LSO, LRO..). My objective is too find if a given socket has some ...
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980 views

HAPROXY ingress controller setup using mTLS with configmap with just the ingress load balancer because it's ssl offloaded. No need for backend check

I was able to achieve ssl offloading with Haproxy. So great product and appreciate that capability! With that said, I need to doing mutual TLS but am a little confused on how that will work with the ...
Christian Matthew's user avatar
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TCP checksum errors between linux apps and NICs

I'm writing an internet application and I'm at the stage of crafting my own TCP packets. Except there is a major problem. According to the TCPDUMP utility in linux, every tcp packet that I send out ...
Mike's user avatar
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Disable TCP Offload for CentOS 7 on laptop and VPS

I can disable outgoing and incoming TCP Offload on MACOS in user's .bash_profile file: sudo sysctl net.link.generic.system.hwcksum_tx=0 sudo sysctl net.link.generic.system.hwcksum_rx=0 This stops the ...
Jeff Rhodes's user avatar