Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

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

MFC r272027:

Hardware driver update from Mellanox Technologies, including:
- improved performance
- better stability
- new features
- bugfixes

Supported HCAs:
- ConnectX-2
- ConnectX-3
- ConnectX-3 Pro

NOTE:
- TSO feature needs r271946, which is not yet merged.

Sponsored by: Mellanox Technologies
Approved by: re, glebius

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

- Fix compile errors from the clang conversion
- Grab AF_SDP_INET from sys/socket.h

Submitted by: Garrett Cooper
Sponsored by: EMC / Isilon Storage Division

- Merge in OFED 1.5.3 from projects/ofed/head