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

sys/dev: minor spelling fixes.

Most affect comments, very few have user-visible effects.

Migrate many bus_alloc_resource() calls to bus_alloc_resource_anywhere().

Most calls to bus_alloc_resource() use "anywhere" as the range, with a given
count. Migrate these to use the new bus_alloc_resource_anywhere() API.

Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D5370

Convert rman to use rman_res_t instead of u_long

Summary:
Migrate to using the semi-opaque type rman_res_t to specify rman resources. For
now, this is still compatible with u_long.

This is step one in migrating rman to use uintmax_t for resources instead of
u_long.

Going forward, this could feasibly be used to specify architecture-specific
definitions of resource ranges, rather than baking a specific integer type into
the API.

This change has been broken out to facilitate MFC'ing drivers back to 10 without
breaking ABI.

Reviewed By: jhb
Sponsored by: Alex Perez/Inertial Computing
Differential Revision: https://reviews.freebsd.org/D5075

Create a generic PCCARD_PNP_INFO from the MODULE_PNP_INFO building
block. Use it in all the PNP drivers to export either the current PNP
table. For uart, create a custom table and export it using
MODULE_PNP_INFO since it's the only one that matches on function
number.

Differential Review: https://reviews.freebsd.org/D3461

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

Mechanically convert to if_inc_counter().

Include the now missing headers after untangling if.h and if_var.h.
This fixes pc98 build.

Reviewed by: andre

nclude missing net/if_var.h.

Due to header pollution it wasn't noticed before.

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

Use ANSI prototype to fix build with clang.

MFC after: 1 week

ether_ifattach() sets if_mtu to ETHERMTU, don't bother set it again

Reviewed by: yongari

Add new tunable 'net.link.ifqmaxlen' to set default send interface
queue length. The default value for this parameter is 50, which is
quite low for many of today's uses and the only way to modify this
parameter right now is to edit if_var.h file. Also add read-only
sysctl with the same name, so that it's possible to retrieve the
current value.

MFC after: 1 month

Use if_maddr_rlock()/if_maddr_runlock() rather than IF_ADDR_LOCK()/
IF_ADDR_UNLOCK() across network device drivers when accessing the
per-interface multicast address list, if_multiaddrs. This will
allow us to change the locking strategy without affecting our driver
programming interface or binary interface.

For two wireless drivers, remove unnecessary locking, since they
don't actually access the multicast address list.

Approved by: re (kib)
MFC after: 6 weeks

strict kobj sigs: fix assortment of device_detach and device_shutdown impls

with common issue of having void return type instead of int

Reviewed by: imp, current@
Approved by: jhb (mentor)

Convert to new style PC Card front end driver. Add support for the
NEC PC-9801N-J02 and PC-9801N-J02R. I can't test the former because
it requires resources that conflict with my laptop. I can't test the
latter because my dog chewed up my -J02R card and it didn't survive
well enough for me to test.

Add locking to snc(4) so it is MPSAFE:
- Add a mutex to the softc to protect the softc and device hardware.
- Use a private timer routine to drive the transmit watchdog timer instead
of using if_watchdog/if_timer.
- If if_alloc() fails during attach, fail the attach with an error rather
than panic'ing.
- Clear RUNNING and OACTIVE only in sncstop().
- Don't mess with IFF_UP.
- Don't leak 'struct ifnet' on detach.
- Setup interrupt handler after ether_ifattach().
- Call ether_ifdetach() rather than if_detach() in the pccard detach
routine.

Tested by: no one despite repeated requests

Remove various and sundry NetBSDism's in preparation for adding locking.

o break newbus api: add a new argument of type driver_filter_t to
bus_setup_intr()

o add an int return code to all fast handlers

o retire INTR_FAST/IH_FAST

For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current

Reviewed by: many
Approved by: re@

Fix -Wundef warnings from compiling GENERIC and LINT kernels of
all architectures.

- Store pointer to the link-level address right in "struct ifnet"
rather than in ifindex_table[]; all (except one) accesses are
through ifp anyway. IF_LLADDR() works faster, and all (except
one) ifaddr_byindex() users were converted to use ifp->if_addr.

- Stop storing a (pointer to) Ethernet address in "struct arpcom",
and drop the IFP2ENADDR() macro; all users have been converted
to use IF_LLADDR() instead.

'PC Card' instead of other variants

Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and
IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to
ifnet.if_drv_flags. Device drivers are now responsible for
synchronizing access to these flags, as they are in if_drv_flags. This
helps prevent races between the network stack and device driver in
maintaining the interface flags field.

Many __FreeBSD__ and __FreeBSD_version checks maintained and continued;
some less so.

Reviewed by: pjd, bz
MFC after: 7 days

Modify device drivers supporting multicast addresses to lock if_addr_mtx
over iteration of their multicast address lists when synchronizing the
hardware address filter with the network stack-maintained list.

Problem reported by: Ed Maste (emaste at phaedrus dot sandvine dot ca>
MFC after: 1 week

Build on pc98.

change 'dev' to 'sc->sc_dev' to fix the build.

Approved: re (implicit)

Stop embedding struct ifnet at the top of driver softcs. Instead the
struct ifnet or the layer 2 common structure it was embedded in have
been replaced with a struct ifnet pointer to be filled by a call to the
new function, if_alloc(). The layer 2 common structure is also allocated
via if_alloc() based on the interface type. It is hung off the new
struct ifnet member, if_l2com.

This change removes the size of these structures from the kernel ABI and
will allow us to better manage them as interfaces come and go.

Other changes of note:
- Struct arpcom is no longer referenced in normal interface code.
Instead the Ethernet address is accessed via the IFP2ENADDR() macro.
To enforce this ac_enaddr has been renamed to _ac_enaddr.
- The second argument to ether_ifattach is now always the mac address
from driver private storage rather than sometimes being ac_enaddr.

Reviewed by: sobomax, sam

Only send packet to bpf if we are committed to send it. Previously it was
possible that the same packet would show up multiple times. This poses some
constraints on the TBD locking for snc(4) (see comment).

Obtained from: DragonFlyBSD
Submitted by: Joerg Sonnenberger
Reviewed by: rwatson

Remove now-stale comment

Start each of the license/copyright comments with /*-, minor shuffle of lines

Since if_snc doesn't contain locking or run with INTR_MPSAFE, mark
the interface as IFF_NEEDSGIANT so if_start is run holding Giant.

We don't need to initialize if_output, ether_ifattach() does it
for us.

It turns out that the module dependency on pccard is in error. Since
there's not dependencies on pccard symboles, such a dependency is not
necessary. This means that drivers that have multiple attachments can
not drag bogus devices into the kernel at load time.

We can't (yet) do this with pci and isa. Drivers written for them
actually do seem to have symbols that depend on these busses'
implementation code.

ndis not touched until other things can be tested.

Convert callers to the new bus_alloc_resource_any(9) API.

Submitted by: Mark Santcroos <marks@ripe.net>
Reviewed by: imp, dfr, bde

Announce ethernet MAC addresss in ether_ifattach().

Do if_xname conversion. I missed this one because it's pc98 only.

Use __FBSDID().
Also some minor style cleanups.

Consistently use the BSD u_int and u_short instead of the SYSV uint and
ushort. In most of these files, there was a mixture of both styles and
this change just makes them self-consistent.

Requested by: bde (kern_ktrace.c)

Remove unused #ifdef BRIDGE.

Reviewed by: nyan

Fix off-by-one bug.

Submitted by: chi@bd.mbn.or.jp (Chiharu Shibata)

- Express hard dependencies on bus (pci, isa, pccard) and
network layer (ether).
- Don't abuse module names to facilitate ifconfig module loading;
such abuse isn't really needed. (And if we do need type information
associated with a module then we should make it explicit and not
use hacks.)

Introduce an M_ASSERTPKTHDR() macro which performs the very common task
of asserting that an mbuf has a packet header. Use it instead of hand-
rolled versions wherever applicable.

Submitted by: Hiten Pandya <hiten@unixdaemons.com>

Back out M_* changes, per decision of the TRB.

Approved by: trb

Use correct spl mask.

Submitted by: chi@bd.mbn.or.jp (Chiharu Shibata)
MFC after: 1 day

Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.

network interface driver changes:

o don't strip the Ethernet header from inbound packets; pass packets
up the stack intact (required significant changes to some drivers)
o reference common definitions in net/ethernet.h (e.g. ETHER_ALIGN)
o track ether_ifattach/ether_ifdetach API changes
o track bpf changes (use BPF_TAP and BPF_MTAP)
o track vlan changes (ifnet capabilities, revised processing scheme, etc.)
o use if_input to pass packets "up"
o call ether_ioctl for default handling of ioctls

Reviewed by: many
Approved by: re

Remove __P.

Convert if_multiaddrs from LIST to TAILQ so that it can be traversed
backwards in the three drivers which want to do that.

Reviewed by: mikeh

Use LIST_FOREACH() to traverse ifp->if_multiaddrs list, instead of
<sys/queue.h> implementation details.

Created with: /usr/sbin/sed
Reviewed with: /sbin/md5

Remove unused #includes.

Approved by: nyan

Remove unneeded #include <machine/clock.h>

Don't use bus_get_resource() and bus_get_resource_start() functions if
bus_alloc_resource() failed. So, error messages are changed more simply.

Suggested by: "Matthew N. Dodd" <winter@jurai.net>

Added NEC PC-9801-83, 84, PC-9801-103, 104, PC-9801N-25 and PC-9801N-J02R
support which use National Semiconductor DP8393X (SONIC) as ethernet
controller. Currently, this driver is used on only PC-98.

Submitted by: Motomichi Matsuzaki <mzaki@e-mail.ne.jp>
Obtained from: NetBSD/pc98