remove unneeded includes; ok mpi@

Fix up flags passed to usbd_open_pipe_intr() - interrupt pipes are always
opened exclusively, and the flags argument is passed to usbd_setup_xfer().
USBD_EXCLUSIVE_USE has the same value as USBD_NO_C

Fix up flags passed to usbd_open_pipe_intr() - interrupt pipes are always
opened exclusively, and the flags argument is passed to usbd_setup_xfer().
USBD_EXCLUSIVE_USE has the same value as USBD_NO_COPY, which means that
data transferred would not be copied to the buffer where the driver expects
it.

None of these drivers actually used the interrupt data for anything, and
in some the interrupt pipe code was #if 0'd out, so this doesn't change
anything, but fixing this up prevents unwary developers like me from
copying code that doesn't work.

ok mglocker@

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Nuke all occurrences of usbd_abort_pipe() if it gets called right
before usbd_close_pipe(), since usbd_close_pipe() already takes care
about aborting non-empty pipes.

As investigated by gerhard@ usb

Nuke all occurrences of usbd_abort_pipe() if it gets called right
before usbd_close_pipe(), since usbd_close_pipe() already takes care
about aborting non-empty pipes.

As investigated by gerhard@ usbdi.c rev. 1.57 did add usbd_abort_pipe()
to usbd_close_pipe(), but the drivers didn't get cleaned up afterwards.

ok gerhard@

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Change users of IFQ_SET_MAXLEN() and IFQ_IS_EMPTY() to use the "new" API.

ok dlg@ tobhe@

Do not call encap routines with the IFQ mutex held, as they might
sleep in the stop routine in case of errors.

Fix proposed by mpi@, ok patrick@

Make some USB ioctls return ENXIO, instead of EIO, if usbd_is_dying().
Brings us one step closer towards making this condition's error code
consistent across all USB drivers.
Patch by Moritz Buhl
ok

Make some USB ioctls return ENXIO, instead of EIO, if usbd_is_dying().
Brings us one step closer towards making this condition's error code
consistent across all USB drivers.
Patch by Moritz Buhl
ok mpi@ bluhm@

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bug fix (I found it when comparing with if_upl.c)

- remove extra blank line
- call ifq_deq_rollback() when ugl_send() failed
- call ifq_clr_oactive() before splx()

ok mpi@

move counting if_opackets next to counting if_obytes in if_enqueue.

this means packets are consistently counted in one place, unlike the
many and various ways that drivers thought they should do it.

move counting if_opackets next to counting if_obytes in if_enqueue.

this means packets are consistently counted in one place, unlike the
many and various ways that drivers thought they should do it.

ok mpi@ deraadt@

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G/C IFQ_SET_READY().

Call ether_fakeaddr() instead of faking Ethernet addresses manually.

Input from and ok jsg@

Network drivers should not include <net/route.h> or <net/netisr.h>

replace IFF_OACTIVE manipulation with mpsafe operations.

there are two things shared between the network stack and drivers
in the send path: the send queue and the IFF_OACTIVE flag. the send
queue i

replace IFF_OACTIVE manipulation with mpsafe operations.

there are two things shared between the network stack and drivers
in the send path: the send queue and the IFF_OACTIVE flag. the send
queue is now protected by a mutex. this diff makes the oactive
functionality mpsafe too.

IFF_OACTIVE is part of if_flags. there are two problems with that.
firstly, if_flags is a short and we dont have any MI atomic operations
to manipulate a short. secondly, while we could make the IFF_OACTIVE
operates mpsafe, all changes to other flags would have to be made
safe at the same time, otherwise a read-modify-write cycle on their
updates could clobber the oactive change.

instead, this moves the oactive mark into struct ifqueue and provides
an API for changing it. there's ifq_set_oactive, ifq_clr_oactive,
and ifq_is_oactive. these are modelled on ifsq_set_oactive,
ifsq_clr_oactive, and ifsq_is_oactive in dragonflybsd.

this diff includes changes to all the drivers manipulating IFF_OACTIVE
to now use the ifsq_{set,clr_is}_oactive API too.

ok kettenis@ mpi@ jmatthew@ deraadt@

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The only network driver needing <net/if_types.h> is upl(4) for IFT_OTHER.

shuffle struct ifqueue so in flight mbufs are protected by a mutex.

the code is refactored so the IFQ macros call newly implemented ifq
functions. the ifq code is split so each discipline (priq and

shuffle struct ifqueue so in flight mbufs are protected by a mutex.

the code is refactored so the IFQ macros call newly implemented ifq
functions. the ifq code is split so each discipline (priq and hfsc
in our case) is an opaque set of operations that the common ifq
code can call. the common code does the locking, accounting (ifq_len
manipulation), and freeing of the mbuf if the disciplines enqueue
function rejects it. theyre kind of like bufqs in the block layer
with their fifo and nscan disciplines.

the new api also supports atomic switching of disciplines at runtime.
the hfsc setup in pf_ioctl.c has been tweaked to build a complete
hfsc_if structure which it attaches to the send queue in a single
operation, rather than attaching to the interface up front and
building up a list of queues.

the send queue is now mutexed, which raises the expectation that
packets can be enqueued or purged on one cpu while another cpu is
dequeueing them in a driver for transmission. a lot of drivers use
IFQ_POLL to peek at an mbuf and attempt to fit it on the ring before
committing to it with a later IFQ_DEQUEUE operation. if the mbuf
gets freed in between the POLL and DEQUEUE operations, fireworks
will ensue.

to avoid this, the ifq api introduces ifq_deq_begin, ifq_deq_rollback,
and ifq_deq_commit. ifq_deq_begin allows a driver to take the ifq
mutex and get a reference to the mbuf they wish to try and tx. if
there's space, they can ifq_deq_commit it to remove the mbuf and
release the mutex. if there's no space, ifq_deq_rollback simply
releases the mutex. this api was developed to make updating the
drivers using IFQ_POLL easy, instead of having to do significant
semantic changes to avoid POLL that we cannot test on all the
hardware.

the common code has been tested pretty hard, and all the driver
modifications are straightforward except for de(4). if that breaks
it can be dealt with later.

ok mpi@ jmatthew@

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arp_ifinit() is no longer needed.

Increment if_ipackets in if_input().

Note that pseudo-drivers not using if_input() are not affected by this
conversion.

ok mikeb@, kettenis@, claudio@, dlg@

Only match devices with a valid configuration.

ok uaa@

Convert to if_input().

Tested by and ok uaa@

Remove some includes include-what-you-use claims don't
have any direct symbols used. Tested for indirect use by compiling
amd64/i386/sparc64 kernels.

ok tedu@ deraadt@

Kill annoying comments about ether_input()

unifdef INET

No need for <netinet/in_systm.h> here.

Kill a bunch of DVACT_DEACTIVATE handlers whose only purpose were to
set the 'dying' flag of a device. Such handlers are useless now that
usbd_detach() already set this flag.

Even if the purpose of

Kill a bunch of DVACT_DEACTIVATE handlers whose only purpose were to
set the 'dying' flag of a device. Such handlers are useless now that
usbd_detach() already set this flag.

Even if the purpose of this flag is questionnable on OpenBSD because
DVACT_DEACTIVATE acts as a pre-detach event, this is just a first small
step towards the simplification of the autoconf(9) device states.

This cleaning is now possible thanks to the work of pirofti@ to convert
all the USB drivers to properly use usbd_is_dying().

Discussed many times with deraadt@

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Remove unused fields.

ok sasano@

Clean up the ioctl handler to be in line with most of the other
Ethernet drivers.

ok sasano@