tools: netmap: pkt-gen: check packet length against interface MTU
ClosedPublic
Actions

Authored by vmaffione on Dec 5 2018, 3:45 PM.

Tags

None

Referenced Files

	Unknown Object (File)
	Thu, Aug 27, 6:14 PM

	Unknown Object (File)
	Fri, Aug 21, 1:14 PM

	Unknown Object (File)
	Fri, Aug 21, 11:59 AM

	Unknown Object (File)
	Thu, Aug 20, 5:07 PM

	Unknown Object (File)
	Wed, Aug 19, 4:31 PM

	Unknown Object (File)
	Wed, Aug 19, 12:30 PM

	Unknown Object (File)
	Tue, Aug 18, 8:35 PM

	Unknown Object (File)
	Tue, Aug 18, 3:11 PM

View All Files

Subscribers

imp

Details

Reviewers

gnn
hrs

Commits

rS342035: MFC r341726
rS342032: MFC r341726
rS341726: tools: netmap: pkt-gen: check packet length against interface MTU

Summary

Validate the value of the -l argument (packet length) against the MTU of the netmap port.
In case the netmap port does not refer to a physical interface (e.g. VALE port or pipe), then
the netmap buffer size is used as MTU.
This change also sets a better default value for the -M option, so that pkt-gen uses
the largest possible fragments in case of multi-slot packets.

Test Plan

Performed several pkt-gen tests with and without jumbo frames on em interfaces.