hyperv/hn: Fix UDP checksum offload issue in Azure
ClosedPublic
Actions

Authored by sepherosa_gmail.com on Sep 21 2017, 7:25 AM.

Tags

None

Referenced Files

	Unknown Object (File)
	Tue, Feb 17, 3:31 AM

	Unknown Object (File)
	Fri, Feb 13, 2:46 AM

	Unknown Object (File)
	Jan 10 2026, 9:37 AM

	Unknown Object (File)
	Nov 27 2025, 2:19 AM

	Unknown Object (File)
	Nov 21 2025, 2:14 AM

	Unknown Object (File)
	Nov 21 2025, 2:13 AM

	Unknown Object (File)
	Nov 21 2025, 2:13 AM

	Unknown Object (File)
	Nov 21 2025, 2:10 AM

View All 97 Files

Subscribers

None

Details

Reviewers

decui_microsoft.com
honzhan_microsoft.com
howard0su_gmail.com
royger

Commits

rS324049: hyperv/hn: Fix UDP checksum offload issue in Azure.

Summary

UDP checksum offload does not work in Azure if following conditions are met:

sizeof(IP hdr + UDP hdr + payload) > 1420.
IP_DF is not set in IP hdr

Use software checksum for UDP datagrams falling into this category.

Diff Detail

Repository

rS FreeBSD src repository - subversion

Lint

Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

sepherosa_gmail.com created this revision.Sep 21 2017, 7:25 AM

Closed by commit rS324049: hyperv/hn: Fix UDP checksum offload issue in Azure. (authored by sephe). · Explain WhySep 27 2017, 5:45 AM

This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

Path

Size

head/

sys/

dev/

hyperv/

netvsc/

if_hn.c

59 lines

Diff 33480

View Options

head/sys/dev/hyperv/netvsc/if_hn.c

hyperv/hn: Fix UDP checksum offload issue in AzureClosedPublicActions