User Manual

Rev 2.2-1.0.1

Mellanox Technologies

4.6.8.2 tc and tc_wrap.py

The 'tc' tool is used to setup

sk_prio to UP mapping, using the mqprio queue discipline.

In kernels that do not support

mqprio (such as 2.6.34), an alternate mapping is created in sysfs.

The 'tc_wrap.py' tool will use either the

sysfs or the 'tc' tool to configure the sk_prio to UP

mapping.

Usage:

tc_wrap.py -i <interface> [options]

Options:

--version show program's version number and exit

-h, --help show this help message and exit

-u SKPRIO_UP, --skprio_up=SKPRIO_UP maps sk_prio to UP. LIST is <=16 comma separated

UP. index of element is sk_prio.

-i INTF, --interface=INTF Interface name

Example: set skprio 0-2 to UP0, and skprio 3-7 to UP1 on eth4

up: 1

up: 2

up: 3

tc: 2 ratelimit: 2 Gbps, tsa: strict

up: 4

up: 5

up: 6

UP 0

skprio: 0

skprio: 1

skprio: 2 (tos: 8)

skprio: 7

skprio: 8

skprio: 9

skprio: 10

skprio: 11

skprio: 12

skprio: 13

skprio: 14

skprio: 15

UP 1

skprio: 3

skprio: 4 (tos: 24)

skprio: 5

skprio: 6 (tos: 16)