Raw tcsim output

tcsim prints tracing information on standard output. Each line has the following format:

time event : $\ldots$

time

The simulation time at which the even has occurred, either in seconds or in jiffies.

event

The event type. Currently, the following events are reported:

I	ingress queuing discipline
E	device enqueue
D	device dequeue
T	execution of a tc command
*	error or diagnostic

Additionally, if function call tracing is enabled (with -v), the following events are reported:

c	call to classifier
i	call to enqueue function of the ingress queuing discipline
e	call to enqueue function of an egress queuing discipline
d	call to dequeue function
r	call to requeue function
x	call to drop function
s	call to reshape_fail callback
p	call to tcf_police

For device enqueue and dequeue events, the following additional information is printed:

skb_addr length : device: content $\ldots$

skb_addr

The address of the skb.

length

Length of the packet.

content

Packet content, printed in groups of four hex bytes. The length can be limited with the -s option. If bytes were not displayed due to -s, tcsim ends the line with three dots (...)

For tc command execution, the command line (including the tc command) is printed.

For all tracing events, the following information is printed:

skb_addr length : $<$level$>$ descr $\ldots$

skb_addr

Address of the skb, 0x0 if no skb is available

length

Length of the packet, 0 if no skb is available

level

Call depth (enclosed by <>), starting at zero.

descr

Description of the event, usually including the kind and ID of the element, and the return value of the function