CHELSIO TOE DRIVER


This opens the way for very powerful extensions to pure protocol offload based on TOE , including: The adapters provide a flexible zero copy capability for regular TCP connections, requiring no changes to the sender, to deliver line rate performance at minimal CPU utilization. The following platforms are supported: But why is it sometimes recommended to turn off the TOE? This is particularly true with a very fast CPU. The code, architecture description, and some papers comparing TOE performance to other technologies are available from https: We are including a patch containing the TCP changes below against 2.

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Re: [PATCH] TCP Offload (TOE) – Chelsio []

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Sign up using Email and Password. Why TOE can be so slow in some cases?

Further application layer offload, such as application layer payload recovery-to-end security protocol offload, per connection TCP level traffic management and quality of service and end-to-end security protocol offload. What problems can the use of TOE cause?

Chelsio 10Gb TOE (TCP Offload Engine)

Sign up or log in Sign up using Google. This is code developed by us over the past couple of years and has been in production for over a year. Server Fault works best with JavaScript enabled. This opens the way for very powerful extensions to pure protocol offload based on TOEincluding: All the host processor needs to do is open the connection and the offload technology on the card will take it from there. Sign up using Facebook. The code we are releasing today has been used with an older version of Linux to set the current Internet2 land speed record and has demonstrated improved performance with a variety of applications and benchmarks.

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As another example of performance benefits, while today’s NICs cannot handle 10G receive with regular frames, a TOE can comfortably do so with much of the CPU left for application processing.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. All the code is available at the above URL.

The following platforms are supported: The ability of TOE to perform full transport layer functionality is essential to obtaining tangible benefits. The important aspect of the this layer is it being the process-to-process layer, i. We are aware that we’ll need to strip the compatibility stuff and plan to do so. The adapters provide a flexible zero copy capability for regular TCP connections, requiring no changes to the sender, to deliver line rate performance at minimal CPU utilization.

We are aware that TOEs are viewed with much skepticism in the Linux community but we believe that a lot of the concerns often brought up have to do with implementation details of particular products rather than with the technology as a whole.

We’d like to point out that the released code is our current production codebase that accommodates both 2. The proposed design is intended to accommodate products from multiple vendors and roughly has the following components: Thanks for your attention and we are looking forward to your comments. The code, architecture description, and some papers comparing TOE performance to other technologies are available from https: This component does not introduce any new soft irqs, instead TOE devices use regular facilities, such as NAPI, to service incoming traffic; – some changes to existing TCP code and some additions to provide offloading.

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Chelsio 10Gb TOE (TCP Offload Engine) []

Changes to existing code are a few dozen lines and are usually either notification of TOEs when the SW stack processes certain events, e. We are including tooe patch containing the TCP changes below against 2.

In contrast, lower layers only provide unreliable delivery functionality, dhelsio limits the usability of the data at these levels. Chelsio is proposing a solution that we feel allows TOEs to coexist alongside the regular stack’s TCP without breaking networking features, and allows the combined network stack to offer superior TCP performance. Application layer data integrity check CRC offload, typically used in data critical applications, which are not satisfied with the relatively weak internet checksum protection e.

This opens the way for very powerful extensions to pure protocol offload based on TOEincluding:. This has several advantages: Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have cchelsio our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.