tree 67c073649ed33137e6f6735cf7f29743c3029781
parent 0b307ebd6834012c483b8ee9801164123a54f79a
author stephen hemminger <stephen@networkplumber.org> 1485291959 -0800
committer David S. Miller <davem@davemloft.net> 1485293337 -0500

netvsc: negotiate checksum and segmentation parameters

Redo how Hyper-V network driver negotiates offload features. Query the
host to determine offload settings, and use the result.

Also:
  * disable IPv4 header checksum offload (not used by Linux)
  * enable TSO only if host supports
  * enable UDP checksum offload if supported
  * don't advertise support for checksumming of non-IP protocols
  * adjust GSO maximum segment size
  * enable HIGHDMA

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>