Chelsio Communications Chelsio T5 Guia do Utilizador descarregar pdf (Página 262)

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XIX. Traffic Management

Chelsio T5/T4 Unified Wire For Linux Page 262

5. Usage

5.1. Non-Offloaded Connections

The following example demonstrates the method to rate limit all TCP connections on class 0 to

a rate of 300 Mbps for Non-offload connections:

1. Load the Network driver in NIC mode.

[root@host]# modprobe cxgb4

2. Bind connections with destination IP address 192.168.5.3 to NIC TX queue 3

[root@host]# tc qdisc add dev eth0 root handle 1: multiq

[root@host]# tc filter add dev eth0 parent 1: protocol ip prio 1 u32 match

ip dst 192.168.5.3 action skbedit queue_mapping 3

3. Bind the NIC TX queue to class 0

[root@host]# cxgbtool eth0 sched-queue 3 0

4. Set the appropriate rule for class 0

[root@host]# cxgbtool eth0 sched-class params type packet level cl-rl

mode class rate-unit bits rate-mode absolute channel 0 class 0 max-rate

300000 pkt-size 1460

5.2. Offloaded Connections

The following example demonstrates the method to rate limit all TCP connections on class 0 to

a rate of 300 Mbps for offloaded connections:

1. Load the Network driver in TOE mode

[root@host]# modprobe t4_tom

1 2 ... 257 258 259 260 261 262 263 264 265 266 267 ... 459 460

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