tree 865d0862309b88b06a249b3cc949aee1589ba7ef
parent e17705c43b4273d2587297d5f8168ee432d9c94a
author Bert Kenward <bkenward@solarflare.com> 1479379914 +0000
committer David S. Miller <davem@davemloft.net> 1479488138 -0500

sfc: Firmware-Assisted TSO version 2

Add support for FATSOv2 to the driver. FATSOv2 offloads far more of the task
 of TCP segmentation to the firmware, such that we now just pass a single
 super-packet to the NIC. This means TSO has a great deal in common with a
 normal DMA transmit, apart from adding a couple of option descriptors.
 NIC-specific checks have been moved off the fast path and in to
 initialisation where possible.

This also moves FATSOv1/SWTSO to a new file (tx_tso.c).  The end of transmit
 and some error handling is now outside TSO, since it is common with other
 code.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>