User`s guide

XVI. Traffic Management
Chelsio T5/T4 Unified Wire For Linux Page 216
 maximum-rate is the bit rate (Kbps) for this TCP stream. The lower limit is 300 Mbps and
600 Mbps for T4 and T5 adapters respectively.
 Packet size is the TCP mss size in bytes; for example – for an MTU of 1500, use a packet
size of 1460.
4.2. Configuring Traffic Management
4.2.1. For Non-offloaded connections
Traffic Management of non-offloaded connections is a 2-step process. In the first step bind
connections to indicated NIC TX queue using tc utility from iproute2-3.9.0 package. In the
second step bind the indicated NIC TX queue to the specified TC Scheduler class using the
cxgbtool utility.
1. Bring up the interface:
[root@host]# ifconfig ethX up
2. Bind connections to queues:
[root@host]# tc qdisc add dev ethX root handle 1: multiq
[root@host]# tc filter add dev ethX parent 1: protocol ip prio 1 u32 match
ip dst <IP address of destination> action skbedit queue_mapping <queue>
3. Now, bind the NIC TX queue with traffic class:
[root@host]# cxgbtool ethX sched-queue <queue> <class>
Here,
 ethX is the Chelsio interface
 queue is the NIC TX queue
 class is the TX scheduler class
For additional binding options, run [root@host]# man tc
Note