Merge from head

Merge r278538 through r279514.

MFH: r278593-r278966

Sponsored by: The FreeBSD Foundation

Merge ^/head r278499 through r278755.

o Correct the calculation how many pages we need
o Ensure we use correct bank for MSK register
o Save and restore current bank in interrupt handler
o Stop TX watchdog on fatal errors
o Use right regi

o Correct the calculation how many pages we need
o Ensure we use correct bank for MSK register
o Save and restore current bank in interrupt handler
o Stop TX watchdog on fatal errors
o Use right register for EPH status

This fixes operation on ARMv8 Foundation Model

Reviewed by: benno@

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MFhead @ r277403

Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

In order to reduce use of M_EXT outside of the mbuf allocator and
socket-buffer implementations, introduce a return value for MCLGET()
(and m_cljget() that underlies it) to allow the caller to avoid

In order to reduce use of M_EXT outside of the mbuf allocator and
socket-buffer implementations, introduce a return value for MCLGET()
(and m_cljget() that underlies it) to allow the caller to avoid testing
M_EXT itself. Update all callers to use the return value.

With this change, very few network device drivers remain aware of
M_EXT; the primary exceptions lie in mbuf-chain pretty printers for
debugging, and in a few cases, custom mbuf and cluster allocation
implementations.

NB: This is a difficult-to-test change as it touches many drivers for
which I don't have physical devices. Instead we've gone for intensive
review, but further post-commit review would definitely be appreciated
to spot errors where changes could not easily be made mechanically,
but were largely mechanical in nature.

Differential Revision: https://reviews.freebsd.org/D1440
Reviewed by: adrian, bz, gnn
Sponsored by: EMC / Isilon Storage Division

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Merge from head@274682

Sync to HEAD@r272516.

IFC @r271887

Fx a type from r271817; it's IFCOUNTER_* not IFNET_*.

Mechanically convert to if_inc_counter().

Merge head

IFC @264767

MFC @ r259205 in preparation for some SVM updates. (for real this time)

Merge head r232040 through r257457.
M usr.sbin/portsnap/portsnap/portsnap.8
M usr.sbin/portsnap/portsnap/portsnap.sh
M usr.sbin/tcpdump/tcpdump/Makefile

The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare
to this event, adding if_var.h to files that do need it. Also, include
all includes that now are included due to implicit po

The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare
to this event, adding if_var.h to files that do need it. Also, include
all includes that now are included due to implicit pollution via if_var.h

Sponsored by: Netflix
Sponsored by: Nginx, Inc.

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Merge fresh head.

IFC @247348.

Sync with HEAD.

IFC @ r244983.

Disable interrupts in filter in order to avoid interrupt storm and
CPU starvation

Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags in sys/dev.