User`s guide

Chapter V. WD-UDP
Chelsio T5/T4 Unified Wire For Linux Page 82
1. Introduction
Chelsio WD-UDP (Wire Direct-User Datagram Protocol) with Multicast is a user-space UDP
stack with Multicast address reception and socket acceleration that enables users to run their
existing UDP socket applications unmodified.
It features software modules that enable direct wire access from user space to the Chelsio
T5/T4 network adapter with complete bypass of the kernel, which results in an ultra-low, three
microsecond deterministic latency 10Gb Ethernet solution for high frequency trading and other
delay-sensitive applications.
1.1. Hardware Requirements
1.1.1. Supported Adapters
The following are the currently shipping Chelsio Adapters that are compatible with Chelsio WD-
UDP driver:
T520-LL-CR
T520-CR
T580-LP-CR
T540-CR
T420-CR
T440-CR
T422-CR
T404-BT
T440-LP-CR
T420-LL-CR
T420-CX
1.2. Software Requirements
1.2.1. Linux Requirements
Currently the WD-UDP driver is available for the following versions:
Redhat Enterprise Linux 5 update 8 kernel (RHEL5.8), 2.6.18-308.el5
Redhat Enterprise Linux 5 update 7 kernel (RHEL5.7), 2.6.18-274.el5
Redhat Enterprise Linux 6 update 3 kernel (RHEL6.3), 2.6.32-279.el6
Redhat Enterprise Linux 6 update 4 kernel (RHEL6.4), 2.6.32-358.el6
Suse Linux Enterprise Server 11 SP1 kernel (SLES11SP1),2.6.32.12-0.7
Suse Linux Enterprise Server 11 SP2 kernel (SLES11SP2), 3.0.13-0.27
Suse Linux Enterprise Server 11 SP3 kernel (SLES11SP3), 3.0.76-0.11