Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from: pfg

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Merge Neterion if_nxge driver version 2.0.9.11230 with the following
changes:

01 - Enhanced LRO:
LRO feature is extended to support multi-buffer mode. Previously,
Ethernet frames received in contiguous buffers were offloaded.
Now, frames received in multiple non-contiguous buffers can be
offloaded, as well. The driver now supports LRO for jumbo frames.

02 - Locks Optimization:
The driver code was re-organized to limit the use of locks.
Moreover, lock contention was reduced by replacing wait locks
with try locks.

03 - Code Optimization:
The driver code was re-factored to eliminate some memcpy
operations. Fast path loops were optimized.

04 - Tag Creations:
Physical Buffer Tags are now optimized based upon frame size.
For better performance, Physical Memory Maps are now re-used.

05 - Configuration:
Features such as TSO, LRO, and Interrupt Mode can be configured
either at load or at run time. Rx buffer mode (mode 1 or mode 2)
can be configured at load time through kenv.

06 - Driver Statistics:
Run time statistics are enhanced to provide better visibility
into the driver performance.

07 - Bug Fixes:
The driver contains fixes for the problems discovered and
reported since last submission.

08 - MSI support:
Added Message Signaled Interrupt feature which currently uses 1
message.

09 Removed feature:
Rx 3 buffer mode feature has been removed. Driver now supports 1,
2 and 5 buffer modes of which 2 and 5 buffer modes can be used
for header separation.

10 Compiler warning:
Fixed compiler warning when compiled for 32 bit system.

11 Copyright notice:
Source files are updated with the proper copyright notice.

MFC after: 3 days
Submitted by: Alicia Pena <Alicia dot Pena at neterion dot com>,
Muhammad Shafiq <Muhammad dot Shafiq at neterion dot com>

Neterion Xframe 10GbE Server/Storage adapter driver.

The nxge driver provides support for Neterion Xframe-I and Xframe-II
adapters. The driver supports TCP Segmentation Offload (TSO/LSO),
Jumbo frames (5 buffer mode), Header separation (2 and 3 Receive
buffer modes), VLAN, and Promiscuous mode.

Submitted by: Neterion
Reviewed by: rwatson
Approved by: re (kensmith)