User`s guide

Chapter V. WD-UDP

Chelsio T5/T4 Unified Wire For Linux Page 87

egress, if the destination IP address will not route out via the T5/T4 device, then it too will

not be accelerated.

4.1.2. Using libcxgb4_sock

The libcxgb4_sock library utilizes the Linux RDMA Verbs subsystem, and thus requires the

RDMA modules be loaded. Ensure that your systems load the iw_cxgb4 and rdma_ucm

modules:

[root@host]# modprobe iw_cxgb4

[root@host]# modprobe rdma_ucm

To preload libcxgb4_sock, use one of the commands mentioned below when starting your

application:

[root@host]# LD_PRELOAD=libcxgb4_sock.so <pathto>/your_application

[root@host]# wdload <pathto>/your_application

If you want to use libcxgb4_sock’s debug capabilities, make the following entry in the

/etc/syslog.conf file:

*.debug /var/log/cxgb4.log

then, restart the service:

[root@host]# /etc/init.d/syslog restart

If you encounter error while using wdload on kernels built on RHEL 5.x

distribution, then run the above command as :

[root@host]# NUMA=0 wdload <pathto>/your_application

Note