Chelsio Communications Chelsio T5 Guia do Utilizador descarregar pdf (Página 259)

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XIX. Traffic Management

Chelsio T5/T4 Unified Wire For Linux Page 259

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

4.2.2. For Offloaded connections

Traffic Management of offloaded connections can be configured either by applying COP policies

that associate offloaded connections to classes or by modifying the application.

If the TX queue is all, * or any negative value, the binding will apply to all of the TX

queues associated with the interface. If the class is unbind, clear or any negative

value, the TX queue(s) will be unbound from any current TX Scheduler Class

binding.

Note

For additional binding options, run [root@host]# man tc

Note

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