Initial RoCE/infiniband kernel update to Linux v4.9.

This patch currently supports:
- ibcore as a kernel module only
- krping as a kernel module only
- ipoib as a kernel module only

Sponsored by: M

Initial RoCE/infiniband kernel update to Linux v4.9.

This patch currently supports:
- ibcore as a kernel module only
- krping as a kernel module only
- ipoib as a kernel module only

Sponsored by: Mellanox Technologies

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More fixes for using IPv6 addresses with RDMA:

- Added check that the SCOPE ID is only restored for IPv6 linklocal
addresses.

- Changes made by r237263 in the "cma_bind_addr()" function did not

More fixes for using IPv6 addresses with RDMA:

- Added check that the SCOPE ID is only restored for IPv6 linklocal
addresses.

- Changes made by r237263 in the "cma_bind_addr()" function did not
check if the socket address was of type IPv6 and used the IPv4
socket address for IPv6 addresses. This caused the function to
fail. Fixed this.

- In the "rdma_gid2ip()" function and some other places the "sin6_len"
and "sin6_scope_id" fields were not set for IPv6 socket
addresses. Fixed this.

- The scope ID is not stored as part of the GID entries and must be
passed as an argument to "rdma_gid2ip()".

- Added new method to "struct ib_device" which returns a pointer to
the network interface which belongs to the given infiniband
device. This is needed to be able to get the scope ID for IPv6
addresses via the associated ethernet interface.

- Added convenience function, "rdma_get_ipv6_scope_id()", to get the
scope ID for IPv6 addresses.

- Implemented new "get_netdev" method for mlx4ib. Other IB controller
drivers which want to support IPv6 addresses needs to implement this
aswell.

- Bumped the FreeBSD version due to changing "struct ib_device".

Sponsored by: Mellanox Technologies
MFC after: 1 week

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Merge sync of head

Merge from head

Merge r278538 through r279514.

MFH: r278593-r278966

Sponsored by: The FreeBSD Foundation

Merge ^/head r278756 through r278915.

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

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

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Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

Merge from head@274682

Sync to HEAD@r274095.

IFC @r273206

Update the OFED Linux compatibility layer and
Mellanox hardware driver(s):

- Properly name an inclusion guard
- Fix compile warnings regarding unsigned enums
- Add two new sysctl nodes
- Remove all

Update the OFED Linux compatibility layer and
Mellanox hardware driver(s):

- Properly name an inclusion guard
- Fix compile warnings regarding unsigned enums
- Add two new sysctl nodes
- Remove all empty linux header files
- Make an error printout more verbose
- Use "mod_delayed_work()" instead of
cancelling and starting a timeout.
- Implement more Linux scatterlist
functions.

MFC after: 3 days
Sponsored by: Mellanox Technologies

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MFC @ r266724

An SVM update will follow this.

Merge head

IFC @264767

Merge head up to r263906.

Since 32-bit if_baudrate isn't enough to describe a baud rate of a 10 Gbit
interface, in the r241616 a crutch was provided. It didn't work well, and
finally we decided that it is time to break ABI an

Since 32-bit if_baudrate isn't enough to describe a baud rate of a 10 Gbit
interface, in the r241616 a crutch was provided. It didn't work well, and
finally we decided that it is time to break ABI and simply make if_baudrate
a 64-bit value. Meanwhile, the entire struct if_data was reviewed.

o Remove the if_baudrate_pf crutch.

o Make all fields of struct if_data fixed machine independent size. The
notion of data (packet counters, etc) are by no means MD. And it is a
bug that on amd64 we've got a 64-bit counters, while on i386 32-bit,
which at modern speeds overflow within a second.

This also removes quite a lot of COMPAT_FREEBSD32 code.

o Give 16 bit for the ifi_datalen field. This field was provided to
make future changes to if_data less ABI breaking. Unfortunately the
8 bit size of it had effectively limited sizeof if_data to 256 bytes.

o Give 32 bits to ifi_mtu and ifi_metric.
o Give 64 bits to the rest of fields, since they are counters.

__FreeBSD_version bumped.

Discussed with: emax
Sponsored by: Netflix
Sponsored by: Nginx, Inc.

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Merge fresh head.

MFC

IFC @ r242684

Sync from head

Take advantage of if_baudrate_pf and calculate an effective baud rate on
all platforms (not just amd64) to compute an equivalent IB rate.

Allow the ofed modules to be compiled on i386.

Reviewed by: jeff

- Merge in OFED 1.5.3 from projects/ofed/head