CHELSIO TOE DRIVER

This is particularly true with a very fast CPU. This opens the way for very powerful extensions to pure protocol offload based on TOE , including: 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. The code, architecture description, and some papers comparing TOE performance to other technologies are available from https: Post as a guest Name. Home Questions Tags Users Unanswered. Also it increases throughput and reduces latency of the network application:

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What problems can the use of TOE cause? Changes to existing code are a few dozen lines and are usually either notification chrlsio TOEs when the SW stack processes certain events, e.

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.

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1Gb/10Gb/40GbE TCP Offload Engine (TOE) Solution for Ethernet | Chelsio Communications

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. 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.

This is code developed by us over the past couple of years and has been in production for over a year. 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. 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.

linux - What problems can the use of TOE cause? - Server Fault

This opens the way for very powerful extensions to pure protocol offload based on TOEincluding:. 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. 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.

This is particularly true with a very fast CPU. 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 ability of TOE to perform full transport layer functionality is essential to obtaining tangible benefits. The proposed design is intended to accommodate products from multiple vendors and roughly has the following components: All the code is available at the above URL. The following platforms are supported: By using our chelsoi, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. All the host processor needs to do is open the connection and the offload technology on the card will take it from there.

We are including a patch containing the TCP changes below against 2. But why is it sometimes recommended to turn off the TOE?

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. This opens the way vhelsio very powerful extensions to pure protocol offload based on TOEincluding: This has several advantages: Tue, 02 Aug Sign up using Facebook.

The code, architecture description, and some papers comparing TOE chelio to other technologies are available from https: Home Questions Tags Users Unanswered. Post Your Answer Discard By clicking "Post Your Answer", you chelsiio 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.

In contrast, lower layers only provide unreliable delivery functionality, which limits the usability of the data at these levels. Post as a guest Name.

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

Server Fault works best with JavaScript enabled. Why TOE can be so slow in some cases?

Also it increases throughput and reduces latency of the network application: Email Required, but never shown.