MFC r356633:
Make sure the VNET is properly set when reaping mbufs in ipoib.
Else the following panic may happen:

panic()
icmp_error()
ipoib_cm_mb_reap()
linux_work_fn()
taskqueue_run_locked()
taskqueue_thread_loop()
fork_exit()
fork_trampoline()

Submitted by: Andreas Kempe <kempe@lysator.liu.se>
Sponsored by: Mellanox Technologies

MFC r298458:
Add missing set of the current VNET when inputting IP packets in IPoIB.

This fixes a kernel panic when using IPoIB with VIMAGE and infiniband.

PR: 208957
Sponsored by: Mellanox Technologies
Tested by: Justin Clift <justin@postgresql.org>

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

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

Add OFED and the associated options and drivers to x86 LINT builds:
- Mark 'sdp' as requiring 'inet'.
- Always include "opt_inet.h" and "opt_inet6.h" and modify the IB
driver Makefiles to honor WITH/WITHOUT_INET/INET6/_SUPPORT options
to determine what should be enabled during a module build.
- Fix the mlxen(4) driver and the core IB code to compile without
if INET is disabled (including when both INET and INET6 are disabled).

Reviewed by: bz
MFC after: 2 weeks

Don't update if_obytes when transmitting packets. That is already done
in IFQ_HANDOFF() when the packet is passed to the start routine, so doing
it here resulted in double counting.

Reported by: Alex Tutubalin lexa lexa ru
MFC after: 1 week

In ipoib_cm_handle_rx_wc(): Count incoming packets and
bytes toward incoming counters.

Reviewed by: jeff

- Merge in OFED 1.5.3 from projects/ofed/head