MFC 4e38478c595a:
ipoib: Fix incorrectly computed IPOIB_CM_RX_SG value.

The computed IPOIB_CM_RX_SG is too small. It doesn't account for fallback
to mbuf clusters when jumbo frames are not available and it also doesn't
account for the packet header and trailer mbuf.

This causes a memory overwrite situation when IPOIB_CM is configured.

While at it add a kernel assert to ensure the mapping array is not overwritten.

PR: 254474
Sponsored by: Mellanox Technologies // NVIDIA Networking

(cherry picked from commit 4e38478c595a9e6225b525890d7ee269a203c200)

Git Hash: 9d03dfae43d2a1a91c846db38223bc33516d1130
Git Author: hselasky@FreeBSD.org

MFC r352955:
Make sure the transmit loop doesn't get starved in ipoib.

When the software send queue gets filled up, callbacks to
if_transmit will stop. Make sure the transmit callback
routine checks the send queue and outputs any remaining
mbufs. Else the remaining mbufs may simply sit in the
output queue blocking the transmit path.

Sponsored by: Mellanox Technologies

MFC r347278:
Fix endless loop in ipoib_poll().

ib_req_notify_cq may return negative value which will indicate a
failure. In the case of uncorrectable error, we will end up in an
endless loop. Fix that, by going to another loop with poll_more
only if there is anything left to poll.

Submitted by: slavash@
Sponsored by: Mellanox Technologies

MFC r341538:
ipoib: Notify on modify QP failure only when relevant

Modify QP can fail and it can be acceptable, like when moving from RST to
ERR state, all the rest are not acceptable and a message to the log
should be printed.

The current code prints on all failures and many messages like:
"Failed to modify QP to ERROR state" appear, even when supported by the
state machine of the QP object.

Linux commit:
5dc78ad1904db597bdb4427f3ead437aae86f54c

MFC after: 1 week
Sponsored by: Mellanox Technologies

MFC r336391:
Use __FBSDID() for RCS tags in ibcore.

Sponsored by: Mellanox Technologies

MFC r303505, r303506, r303512, r303513, r303646, r320418, r323082,
r326169, r326563, r326649, r326716, r326764, r326765 and r329222:

RoCE/infiniband/iWarp upgrade to Linux 4.9 for kernel and userspace.
This commit merges projects/bsd_rdma_4_9 to 11-stable.

Compatibility wrappers have been made for existing 11-stable ibcore
APIs, including ib_reg_phys_mr().
Refer to "sys/ofed/include/rdma/ib_verbs_compat.h" for more information.

The iw_cxgb driver has not been updated and has been disconnected from
the build.

Sponsored by: Mellanox Technologies

MFC r326169 and r326563:
RoCE/infiniband upgrade to Linux v4.9 for kernel and userspace.

List of kernel sources used:
============================

1) kernel sources were cloned from git://github.com/torvalds/linux.git
Top commit 69973b830859bc6529a7a0468ba0d80ee5117826 - tag: v4.9, linux-4.9

2) krping was cloned from https://github.com/larrystevenwise/krping
Top commit 292a2f1abf0348285e678a82264740d52e4dcfe4

List of userspace sources used:
===============================

1) rdma-core was cloned from https://github.com/linux-rdma/rdma-core.git
Top commit d65138ef93af30b3ea249f3a84aa6a24ba7f8a75

2) OpenSM was cloned from git://git.openfabrics.org/~halr/opensm.git
Top commit 85f841cf209f791c89a075048a907020e924528d

3) libibmad was cloned from git://git.openfabrics.org/~iraweiny/libibmad.git
Tag 1.3.13 with some additional patches from Mellanox.

4) infiniband-diags was cloned from git://git.openfabrics.org/~iraweiny/infiniband-diags.git
Tag 1.6.7 with some additional patches from Mellanox.

NOTES:
======

1) The mthca driver has been removed from userspace.
2) All GPLv2 only sources have been removed and where applicable
rewritten from scratch under a BSD license.
3) List of fully supported drivers in userspace and kernel:
a) iw_cxgbe (Chelsio)
b) mlx4ib (Mellanox)
c) mlx5ib (Mellanox)
4) WITH_OFED=YES is still required by make in order to build
OFED userspace and kernel code.
5) Full support has been added for routable RoCE, RoCE v2.

MFC r326649:
Disconnect OFED after r326169 broke all DIRDEPS support for it.

MFC r326716:
Correctly define the unordered_map namespace in ofed/libibnetdisc .

This should fix ofed/libibnetdisc compilation with C-compilers
different from clang and GCC v4.2.1.

Submitted by: kib
Sponsored by: Mellanox Technologies

MFC r326764:
ofed: Remove duplicated symbols from the version file.

ld.bfd accepts multiple listing of the same symbol in the version script.
lld is stricter and errors out. Since arm64 and sometimes amd64 use lld,
we should correct this cosmetic issue.

Sponsored by: Mellanox Technologies
Reviewed by: hselasky
Differential revision: https://reviews.freebsd.org/D13329

MFC r326765:
ofed: Define barriers for mips and arm.

I used the strongest barriers available on the architectures, so if
the future analysis show that it is excessive, the barriers could be
relaxed. Still, it is unlikely that it is meaningful to run IB on 32bit
ARM or current MIPS machines, so the change is to make WITH_OFED to pass
tinderbox.

Sponsored by: Mellanox Technologies
Reviewed by: hselasky
Differential revision: https://reviews.freebsd.org/D13329

MFC r303505:
sdp: Use an mbufq for received control packets.

This is simpler than the hand-rolled queue, and fixes a use-after-free.

Sponsored by: EMC / Isilon Storage Division

MFC r303506:
sdp: Destroy the PCB lock before freeing to the zone.

Sponsored by: EMC / Isilon Storage Division

MFC r303512:
sdp: Use malloc(9) instead of the Linux compat layer.

SDP transmit and receive rings are always created in a sleepable context,
so we can use M_WAITOK and remove error checks.

Sponsored by: EMC / Isilon Storage Division

MFC r303513:
sdp: Destroy the RDMA ID after destroying the connection's queue pair.

This is the ordering documented by rdma_destroy_qp(). Also add a useful
KASSERT to sdp_pcbfree().

Sponsored by: EMC / Isilon Storage Division

MFC r303646:
ipoib: Bound the number of egress mbufs buffered during pathrec lookups.

In pathological situations where the master subnet manager becomes
unresponsive for an extended period, we may otherwise end up queuing all
of the system's mbufs while waiting for a response to a path record lookup.

This addresses the same issue as commit 1e85b806f9 in Linux.

Reviewed by: cem, ngie
Sponsored by: EMC / Isilon Storage Division

MFC r329222:
Import the mthca kernel side infiniband driver from Linux 4.9 and fix
compilation under FreeBSD. The mthca driver was temporarily removed as
part of the Linux 4.9 RoCE/infinband upgrade.

Top commit in Linux source tree:
69973b830859bc6529a7a0468ba0d80ee5117826

Sponsored by: Mellanox Technologies

MFC r320418. Note that the socket lock _is_ the same as so_rcv's lock
in 11 and this is a no-op in this branch.

Sponsored by: Chelsio Communications

MFC r323082:
cxgbe/iw_cxgbe: Set TCP_NODELAY before initiating connection so that
t4_tom picks it up right away. This is less work than waiting for
the connection to be established before applying the setting.

Sponsored by: Chelsio Communications

MFC r325637:
Mark ipoib device as initialized on device open.

Set the IPOIB_FLAG_INITIALIZED on dev_open and clear it on dev_stop to
avoid a race between ipoib load and the underlying device driver.

The device module must dispatch the IB_EVENT_PORT_ACTIVE event before ipoib
module is loaded. Otherwise, the flush will fail since no one set the
IPOIB_FLAG_INITIALIZED.

Submitted by: Slava Shwartsman <slavash@mellanox.com>
Sponsored by: Mellanox Technologies

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

Whitespace fixes.

MFC after: 1 week
Sponsored by: Mellanox Technologies

Update the infiniband stack to Mellanox's OFED version 2.1.

Highlights:
- Multiple verbs API updates
- Support for RoCE, RDMA over ethernet

All hardware drivers depending on the common infiniband stack has been
updated aswell.

Discussed with: np @
Sponsored by: Mellanox Technologies
MFC after: 1 month

Use the M_SIZE() macro when possible.

MFC after: 3 days
Suggested by: rwatson@

Mechanically convert to if_inc_counter().

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

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

Sponsored by: Mellanox Technologies
MFC after: 1 week

Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags within sys.

Exceptions:

- sys/contrib not touched
- sys/mbuf.h edited manually

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

- Merge in OFED 1.5.3 from projects/ofed/head