tree 380fa014b13eb8c04bbea478a1b93081b2a30925
parent f5152c908a5b0be48ec9a58d0de8bdadd9385854
author Stephen Hemminger <shemminger@vyatta.com> 1278650158 -0700
committer David S. Miller <davem@davemloft.net> 1278650158 -0700

gre: propagate ipv6 transport class

This patch makes IPV6 over IPv4 GRE tunnel propagate the transport
class field from the underlying IPV6 header to the IPV4 Type Of Service
field. Without the patch, all IPV6 packets in tunnel look the same to QoS.

This assumes that IPV6 transport class is exactly the same
as IPv4 TOS. Not sure if that is always the case?  Maybe need
to mask off some bits.

The mask and shift to get tclass is copied from ipv6/datagram.c

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