ixl: Permit 802.1ad frames to pass though the chip

This patch is a quick hack to change the internal Ethertype used
within the chip. All frames with this type are dropped silently.
This patch allows you to overwrite the factory default 0x88a8, which
is used by IEEE 802.1ad VLAN stacking.

Reviewed by: kp, philip, brueffer
Approved by: philip (mentor)
Differential Revision: https://reviews.freebsd.org/D24179

(cherry-picked from commit fa6662b3689eeb71cb63c2b230ca08e7342cabf0)

Git Hash: 9c40fca6c809e845341aade54307f9fc84627480
Git Author: donner@FreeBSD.org

ixl(4)/ixlv(4): Update Intel XL710 PF and VF drivers to ixl-1.11.9 and ixlv-1.5.8

Update the legacy (non-iflib) drivers in stable/11 with recent changes from the
Intel out-of-tree version.

Major changes:

- Support for new BASE-T device with additional link speeds (2.5G and 5G) and EEE
- Additional I2C access methods backported from ixl-iflib
- FW LLDP Agent control with sysctl added for X722 devices (this already
existed for 710 devices)
- MAC/VLAN filters handling has been refactored
- Building and loading if_ixlv as a KLD has been fixed

This is not a MFC since the driver in 12/13 uses iflib, and the decision was
made to not use it in FreeBSD 11 releases.

Submitted by: Krzysztof Galazka <krzysztof.galazka@intel.com>
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D20290

MFC: r343372

ixl(4): Fix handling data passed with ioctl from NVM update tool

From Krzysztof:

Ensure that the entire data buffer passed from the NVM update tool is copied in
to kernel space and copied back out to user space using copyin() and copyout().

PR: 234104
Submitted by: Krzysztof Galazka <krzysztof.galazka@intel.com>
Reported by: Finn <ixbug@riseup.net>
Differential Revision: https://reviews.freebsd.org/D18817

MFC r339639

netmap: align codebase to the current upstream (sha 8374e1a7e6941)

Changelist:
- Move large parts of VALE code to a new file and header netmap_bdg.[ch].
This is useful to reuse the code within upcoming projects.
- Improvements and bug fixes to pipes and monitors.
- Introduce nm_os_onattach(), nm_os_onenter() and nm_os_onexit() to
handle differences between FreeBSD and Linux.
- Introduce some new helper functions to handle more host rings and fake
rings (netmap_all_rings(), netmap_real_rings(), ...)
- Added new sysctl to enable/disable hw checksum in emulated netmap mode.
- nm_inject: add support for NS_MOREFRAG

Approved by: gnn (mentor)
Differential Revision: https://reviews.freebsd.org/D17364

MFC r333149: ixl(4): Update to 1.9.9-k

Major changes:

- Support for descriptor writeback mode (required by ixlv(4) for AVF support)
- Ability to disable firmware LLDP agent by user
- Fix for TX queue hang when using TSO
- Separate descriptor ring sizes for TX and RX rings

Approved by: re (marius)
Relnotes: yes
Sponsored by: Intel Corporation

MFC r331797:

Use an accessor function to access ifr_data.

This fixes 32-bit compat (no ioctl command defintions are required
as struct ifreq is the same size).

Reviewed by: kib
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D14900

MFC r320977:

ixl: gcc build errors

MFC r313497: ixl(4): Update to 1.7.12-k.

Refresh upstream driver before impending conversion to iflib.

Major new features:

- Support for Fortville-based 25G adapters
- Support for I2C reads/writes

(To prevent getting or sending corrupt data, you should set
dev.ixl.0.debug.disable_fw_link_management=1 when using I2C
[this will disable link!], then set it to 0 when done. The driver implements
the SIOCGI2C ioctl, so ifconfig -v works for reading I2C data,
but there are read_i2c and write_i2c sysctls under the .debug sysctl tree
[the latter being useful for upper page support in QSFP+]).

- Addition of an iWARP client interface (so the future iWARP driver for
X722 devices can communicate with the base driver).
- Add "options IXL_IW" to kernel config to enable this option.

Sponsored by: Intel Corporation

MFC r303816 r303847
- Update ixl(4) to Intel driver version ixl-1.6.6-k
- Fixup RSS builds of ixl(4) missed during testing.

Approved by: re (gjb)