tree 1f7d7cab0c43d934ddcfa5bb008144c1f6dabf31
parent 642c2c95585dac4ea977140dbb1149fd1e2e7f7f
author Tom Herbert <tom@herbertland.com> 1461437217 -0700
committer David S. Miller <davem@davemloft.net> 1461648427 -0400

ila: add checksum neutral ILA translations

Support checksum neutral ILA as described in the ILA draft. The low
order 16 bits of the identifier are used to contain the checksum
adjustment value.

The csum-mode parameter is added to described checksum processing. There
are three values:
 - adjust transport checksum (previous behavior)
 - do checksum neutral mapping
 - do nothing

On output the csum-mode in the ila_params is checked and acted on. If
mode is checksum neutral mapping then to mapping and set C-bit.

On input, C-bit is checked. If it is set checksum-netural mapping is
done (regardless of csum-mode in ila params) and C-bit will be cleared.
If it is not set then action in csum-mode is taken.

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>