In do_lock_pi(), do not override error from umtxq_sleep_pi() when
doing suspend check.  This restores the pre-r251684 behaviour, to
retry once after the signal is detected.

PR:	kern/192918
Submitted by:	Elliott Rabe, Dell Inc., Eric van Gyzen <eric@vangyzen.net>
Obtained from:	Dell Inc.
MFC after:	1 week
Update to the Intel Base driver for the Intel XL710 Ethernet Controller Family
	- It was decided to change the driver name to if_ixl for FreeBSD
	- This release adds the VF Driver to the tree, it can be built into
	  the kernel or as the if_ixlv module
	- The VF driver is independent for the first time, this will be
	  desireable when full SRIOV capability is added to the OS.
	- Thanks to my new coworker Eric Joyner for his superb work in
	  both the core and vf driver code.

Enjoy everyone!

Submitted by:	jack.vogel@intel.com and eric.joyner@intel.com
MFC after:	3 days (hoping to make 10.1)
Restore historical behavior of in_control, which, when no matching address
is found, the first usable address is returned for legacy ioctls like
SIOCGIFBRDADDR, SIOCGIFDSTADDR, SIOCGIFNETMASK and SIOCGIFADDR.

While there also fix a subtle issue that a caller from a jail asking for
INADDR_ANY may get the first IP of the host that do not belong to the jail.

Submitted by:	glebius
Differential Revision: https://reviews.freebsd.org/D667
Add some missing checks for unsupported interfaces (e.g. pflog(4)) when
handling ioctls. While here, remove duplicated checks for a NULL ifp in
in6_control(): this check is already done near the beginning of the
function.

PR:		189117
Reviewed by:	hrs
MFC after:	2 weeks