SVNews r324480

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2017-10-10 06:12:07 - r324480 by sephe (Sepherosa Ziehau)

Complete list of files affected by revision r324480:

(Note: At the moment, these links point to ViewVC on They are probably slow. Do not overuse.)

   Contents     MODIFY   /stable/11  
  History   Contents   Diff   MODIFY   /stable/11/sys/dev/hyperv/netvsc/if_hn.c  

Commit message:

MFC 324049,324077

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

  UDP checksum offload does not work in Azure if following conditions are
  - 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.

  Add two tunables to disable UDP/IPv4 and UDP/IPv6 checksum offload, in
  case something unexpected happened.

  Sponsored by: Microsoft
  Differential Revision:

  hyperv/hn: Unbreak i386 building.

  Reported by: cy
  Sponsored by: Microsoft


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