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History log of /src/sys/dev/usb/if_url.c
RevisionDateAuthorComments
 1.98  30-Jun-2024  riastradh url(4): uint32_t for 32-bit hash so h>>31 becomes 0/1, not +1/-1.

Should avoid buffer overrun in PR 58382.
 1.97  20-Aug-2022  riastradh branches: 1.97.4; 1.97.10;
usbnet(9): New usbnet_ispromisc(un).

Replaces ifp->if_flags & IFF_PROMISC in multicast filter updates.
 1.96  03-Mar-2022  riastradh usbnet: Omit needless detachcv name parameter to usbnet_attach.
 1.95  03-Mar-2022  riastradh usbnet: Factor usbnet_init_rx_tx out into usbnet_if_init.

Make it private; no need for drivers to call it any more.
 1.94  03-Mar-2022  riastradh url(4): Inline call to url_uno_stop -- alias for url_reset.
 1.93  03-Mar-2022  riastradh usbnet drivers: From *_uno_init, call *_uno_stop, not usbnet_stop.

Make usbnet_stop private now that no drivers use it.

None of the driver-independent logic in usbnet_stop has any effect at
this point because we are guaranteed not to be running, so only the
driver-dependent logic in *_uno_stop (at most) is needed.

For drivers with no *_uno_stop, just omit the call to usbnet_stop
altogether.

Some of this logic is obviously redundant with the subsequent call to
*_reset -- to be addressed in a subsequent commit.
 1.92  03-Mar-2022  riastradh usbnet drivers: Omit needless isdying tests in *_uno_init.

usbnet(9) already checks this immediately before calling *_uno_init.
 1.91  03-Mar-2022  riastradh usbnet drivers: Omit needless usbnet core lock and assertions.

During attach, the caller has exclusive access to the usbnet until
usbnet_attach_ifp. At other times, register access is serialized
either by the usbnet multicast lock or by IFNET_LOCK.
 1.90  03-Mar-2022  riastradh usbnet drivers: Avoid undefined behaviour if read reg fails.

Some callers don't check the error code, e.g. ~all the mii phy
drivers using PHY_READ. Just return zero if the device is gone or
the xfer fails for any other reason.
 1.89  03-Mar-2022  riastradh usbnet drivers: Omit redundant multicast filter update on init.
 1.88  03-Mar-2022  riastradh usbnet: Apply hardware multicast filter updates synchronously again.

To make this work:

1. Do it only under a new lock, unp_mcastlock. This lock lives at
IPL_SOFTCLOCK so it can be taken from network stack callouts. It
is forbidden to acquire the usbnet core lock under unp_mcastlock.

2. Do it only after usbnet_init_rx_tx and before usbnet_stop; if
issued at any other time, drop the update on the floor.

3. Make usbnet_init_rx_tx apply any pending multicast filter updates
under the lock before setting the flag that allows SIOCADDMULTI or
SIOCDELMULTI to apply the updates.

4. Remove core lock asserts from various drivers' register access
routines. This is necessary because the multicast filter updates
are done with register reads/writes, but _cannot_ take the core
lock when the caller holds softnet_lock.

This now programs the hardware multicast filter redundantly in many
drivers which already explicitly call *_uno_mcast from the *_uno_init
routines. This is probably harmless, but it will likely be better to
remove the explicit calls.
 1.87  03-Mar-2022  riastradh usbnet drivers: Omit needless uno_mcast locked subroutines.

uno_mcast is now called with the core lock already held so there is
no need for a separate locked subroutine.
 1.86  03-Mar-2022  riastradh usbnet: Take the core lock around uno_mcast.

Every driver does this already. This will enable us to change the
lock that serializes access to the registers so we can go back to
doing this synchronously in SIOCADDMULTI/SIOCDELMULTI.
 1.85  03-Mar-2022  riastradh usbnet drivers: Omit needless uno_init locked subroutines.

uno_init is now called with the core lock already held so there is no
need for a separate locked subroutine.
 1.84  03-Mar-2022  riastradh usbnet drivers: No need for usbnet_busy during attach.

usbnet_detach cannot run until the attach routine has finished
(unless a driver goes out of its way to tie its shoelaces together
and explicitly call it during the attach routine, which none of them
do), so there is no need to hang onto a reference count that we
release before attach returns.
 1.83  03-Mar-2022  riastradh usbnet drivers: No need for usbnet_busy in uno_mcast.

This callback always runs with IFNET_LOCK held, and during a task
that usbnet_detach prevents scheduling anew and waits for finishing
before completing the detach, so there is no need to hang onto a
reference count here.
 1.82  03-Mar-2022  riastradh usbnet drivers: No need for usbnet_busy in uno_init.

This callback always runs with the IFNET_LOCK held, and the interface
cannot be detached until the IFNET_LOCK is released, so there is no
need to hang onto a reference count here. (None of the usbnet
drivers touch the IFNET_LOCK except to verify it is held sometimes.)
 1.81  03-Mar-2022  riastradh usbnet: Split multicast filter reprogramming into separate operation.
 1.80  03-Mar-2022  riastradh usbnet drivers: Stop timeout loops early if device is detaching.
 1.79  03-Mar-2022  riastradh usbnet: Enter uno_init with the core lock held.

This reduces code in all drivers except urndis(4) and aue(4).

However, it's still safe for urndis to drop the core lock because the
ifnet is locked, and the ifnet lock covers the DOWN->UP (uno_init)
and UP->DOWN (uno_stop) transitions.
 1.78  03-Mar-2022  riastradh usbnet: Remove usbnet_set_dying.

Not necessary for the one caller that did it (url(4)): usbnet_detach
handles failed attach just fine without it.
 1.77  02-Apr-2020  nisimura iron out multicast filter logic and pick better name for its work
 1.76  15-Mar-2020  thorpej Define and implement a locking protocol for the ifmedia / mii layers:
- MP-safe drivers provide a mutex to ifmedia that is used to serialize
access to media-related structures / hardware regsiters. Converted
drivers use the new ifmedia_init_with_lock() function for this. The
new name is provided to ease the transition.
- Un-converted drivers continue to call ifmedia_init(), which will supply
a compatibility lock to be used instead. Several media-related entry
points must be aware of this compatibility lock, and are able to acquire
it recursively a limited number of times, if needed. This is a SPIN
mutex with priority IPL_NET.
- This same lock is used to serialize access to PHY registers and other
MII-related data structures.

The PHY drivers are modified to acquire and release the lock, as needed,
and assert the lock is held as a diagnostic aid.

The "usbnet" framework has had an overhaul of its internal locking
protocols to fit in with the media / mii changes, and the drivers adapted.

USB wifi drivers have been changed to provide their own adaptive mutex
to the ifmedia later via a new ieee80211_media_init_with_lock() function.
This is required because the USB drivers need an adaptive mutex.

Besised "usbnet", a few other drivers are converted: vmx, wm, ixgbe / ixv.

mcx also now calls ifmedia_init_with_lock() because it needs to also use
an adaptive mutex. The mcx driver still needs to be fully converted to
NET_MPSAFE.
 1.75  14-Mar-2020  christos revert the 0x% -> %# change for fixed width formats pointed out by uwe.
 1.74  13-Mar-2020  christos PR/55068: sc.dying: Fix printf formats:
- no %s/%p for kernel log
- 0x% -> %#
- always %j for kernel log
 1.73  29-Jan-2020  thorpej Adopt <net/if_stats.h>.
 1.72  07-Jan-2020  maxv branches: 1.72.2;
Localify, constify.
 1.71  30-Aug-2019  mrg don't try to set dying when we haven't usbnet_attach()d yet.

reported by maxv.
 1.70  23-Aug-2019  mrg s/UBSNET_MII_DECL_DEFAULT/USBNET_MII_DECL_DEFAULT/. from sc.dying.
 1.69  20-Aug-2019  mrg couple more changes to usbnet(9):

- MII read/write reg return int instead of usbd_status (requested by skrll)
- usbnet_attach_ifp(9) changes arg, two mii-specific flags are placed by a
pointer to new struct usbnet_mii. if not NULL, then attach an MII to this
interface like previous have_mii parameter. use this to allow ure(4) to
properly pass PHY location to mii_attach().

welcome netbsd 9.99.10.
 1.68  15-Aug-2019  mrg port cue(4), mue(4) and url(4) to usbnet(9). diffstat says:

8 files changed, 911 insertions(+), 3087 deletions(-)
 1.67  01-Aug-2019  mrg remove unused code and use common ethernet media code where equivalent.
 1.66  21-Jul-2019  mrg branches: 1.66.2;
remove unused structure members. this brings most <foo>_chain and
<foo>_cdata structures into being identical for usb ethernet drivers.

upl(4) and url(4) need more work.
 1.65  28-May-2019  msaitoh Use ETHER_LOCK()/ETHER_UNLOCK() for all ethernet drivers to protect ec_multi*.
 1.64  23-May-2019  msaitoh -No functional change:
- KNF
- u_int*_t -> uint*_t.
 1.63  05-May-2019  mrg remove explicit 'extern struct cfdriver <my>_cd;' and use ioconf.h
 1.62  08-Mar-2019  msaitoh Use pmf(9).
 1.61  22-Jan-2019  msaitoh Change MII PHY read/write API from:

int (*mii_readreg_t)(device_t, int, int);
void (*mii_writereg_t)(device_t, int, int, int);
to:

int (*mii_readreg_t)(device_t, int, int, uint16_t *);
int (*mii_writereg_t)(device_t, int, int, uint16_t);

Now we can test if a read/write operation failed or not by the return value.

In 802.3 spec says that the PHY shall not respond to read/write transaction
to the unimplemented register(22.2.4.3). Detecting timeout can be used to
check whether a register is implemented or not (if the register conforms to
the spec). ukphy(4) can be used this for MII_MMDACR and MII_MMDAADR.

Note that I noticed that the following code do infinite loop in the
read/wirte function. If it accesses unimplemented PHY register, it will hang.
It should be fixed:

arm/at91/at91emac.c
arm/ep93xx/epe.c
arm/omap/omapl1x_emac.c
mips/ralink/ralink_eth.c
arch/powerpc/booke/dev/pq3etsec.c(read)
dev/cadence/if_cemac.c <- hkenken
dev/ic/lan9118.c


Tested with the following device:

axe+ukphy
axe+rgephy
axen+rgephy (tested by Andrius V)
wm+atphy
wm+ukphy
wm+igphy
wm+ihphy
wm+makphy
sk+makphy
sk+brgphy
sk+gentbi
msk+makphy
sip+icsphy
sip+ukphy
re+rgephy
bge+brgphy
bnx+brgphy
gsip+gphyter
rtk+rlphy
fxp+inphy (tested by Andrius V)
tlp+acphy
ex+exphy
epic+qsphy
vge+ciphy (tested by Andrius V)
vr+ukphy (tested by Andrius V)
vte+ukphy (tested by Andrius V)

Not tested (MAC):
arm:at91emac
arm:cemac
arm:epe
arm:geminigmac
arm:enet
arm:cpsw
arm:emac(omac)
arm:emac(sunxi)
arm:npe
evbppc:temac
macppc:bm
macppc:gm
mips:aumac
mips:ae
mips:cnmac
mips:reth
mips:sbmac
playstation2:smap
powerpc:tsec
powerpc:emac(ibm4xx)
sgimips:mec
sparc:be
sf
ne(ax88190, dl10019)
awge
ep
gem
hme
smsh
mtd
sm
age
alc
ale
bce
cas
et
jme
lii
nfe
pcn
ste
stge
tl
xi
aue
mue
smsc
udav
url

Not tested (PHY):
amhphy
bmtphy
dmphy
etphy
glxtphy
ikphy
iophy
lxtphy
nsphyter
pnaphy
rdcphy
sqphy
tlphy
tqphy
urlphy
 1.60  02-Aug-2018  riastradh Fix usb_rem_task_wait API.

- Return whether it removed task from queue or not.
. True if it was on the queue and we intercepted it before it ran.
. False if we could not intercept it: either it wasn't queued,
or it already ran. (Up to caller to distinguish these cases.)
- Pass an optional interlock like callout_halt.

While here, simplify.

ok mrg@
 1.59  29-Jul-2018  riastradh Use callout_halt and usb_rem_task_wait in url(4) detach.
 1.58  26-Jun-2018  msaitoh branches: 1.58.2;
Implement the BPF direction filter (BIOC[GS]DIRECTION). It provides backward
compatibility with BIOC[GS]SEESENT ioctl. The userland interface is the same
as FreeBSD.

This change also fixes a bug that the direction is misunderstand on some
environment by passing the direction to bpf_mtap*() instead of checking
m->m_pkthdr.rcvif.
 1.57  21-Jan-2018  skrll branches: 1.57.2;
PR kern/52931 Kernel panics with Atheros usb wireless interface

Audit the flags to usbd_create_xfer so that USBD_FORCE_SHORT_XFER is
supplied wherever such a transfer is setup. We can drop
USBD_SHORT_XFER_OK as it has not bearing on number of TDs
 1.56  12-Jan-2017  maya branches: 1.56.8;
Appease coverity which is having nightmares about strings not being
null-terminated by using strlcpy rather than strncpy when it doesn't
matter.

ok christos.
 1.55  15-Dec-2016  ozaki-r Move bpf_mtap and if_ipackets++ on Rx of each driver to percpuq if_input

The benefits of the change are:
- We can reduce codes
- We can provide the same behavior between drivers
- Where/When if_ipackets is counted up
- Note that some drivers still update packet statistics in their own
way (periodical update)
- Moved bpf_mtap run in softint
- This makes it easy to MP-ify bpf

Proposed on tech-kern and tech-net
 1.54  25-Nov-2016  skrll +#include "opt_usb.h"
 1.53  07-Jul-2016  msaitoh branches: 1.53.2;
KNF. Remove extra spaces. No functional change.
 1.52  10-Jun-2016  ozaki-r Introduce m_set_rcvif and m_reset_rcvif

The API is used to set (or reset) a received interface of a mbuf.
They are counterpart of m_get_rcvif, which will come in another
commit, hide internal of rcvif operation, and reduce the diff of
the upcoming change.

No functional change.
 1.51  23-Apr-2016  skrll Merge nick-nhusb

- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
 1.50  09-Feb-2016  ozaki-r Introduce softint-based if_input

This change intends to run the whole network stack in softint context
(or normal LWP), not hardware interrupt context. Note that the work is
still incomplete by this change; to that end, we also have to softint-ify
if_link_state_change (and bpf) which can still run in hardware interrupt.

This change softint-ifies at ifp->if_input that is called from
each device driver (and ieee80211_input) to ensure Layer 2 runs
in softint (e.g., ether_input and bridge_input). To this end,
we provide a framework (called percpuq) that utlizes softint(9)
and percpu ifqueues. With this patch, rxintr of most drivers just
queues received packets and schedules a softint, and the softint
dequeues packets and does rest packet processing.

To minimize changes to each driver, percpuq is allocated in struct
ifnet for now and that is initialized by default (in if_attach).
We probably have to move percpuq to softc of each driver, but it's
future work. At this point, only wm(4) has percpuq in its softc
as a reference implementation.

Additional information including performance numbers can be found
in the thread at tech-kern@ and tech-net@:
http://mail-index.netbsd.org/tech-kern/2016/01/14/msg019997.html

Acknowledgment: riastradh@ greatly helped this work.
Thank you very much!
 1.49  13-Apr-2015  riastradh Convert sys/dev to use <sys/rndsource.h>.
 1.48  10-Aug-2014  tls branches: 1.48.2; 1.48.4; 1.48.8;
Merge tls-earlyentropy branch into HEAD.
 1.47  22-Jan-2013  jmcneill branches: 1.47.10;
- Add a USBD_MPSAFE flag to usbd_open_pipe. If not set, acquire KERNEL_LOCK
before invoking xfer callbacks on this pipe.
- Add an extra flags parameter to usb_init_task. If USBD_TASKQ_MPSAFE is not
present, acquire KERNEL_LOCK before invoking the task callback.
 1.46  05-Jan-2013  christos - need opt_usb.h if depending on USB_DEBUG
- remove trailing whitespace
- add missing KERNEL_RCSID
 1.45  27-Dec-2012  skrll Consistent/Correct error message from failing usbd_set_config.

Use aprint_error_dev.
 1.44  22-Jul-2012  matt branches: 1.44.2;
Fix mii_statchg to take a 'struct ifnet *' instead of device_t. This fixes
problem with a common MDIO bus used for multiple interfaces.
Some drivers converted to CFATTACL_DECL_NEW.
 1.43  11-Mar-2012  mrg minor cleanups from usbmp:
- move usbd_delay_ms() into usbdivar.h in the usb_subr.c section
- minor rcsid fixes
- copyright maintenence
 1.42  06-Mar-2012  mrg pull down from usbmp branch:

- rename usb_detach_{wake,waitup}() to usb_detach_{wake,waitup}old()
- use some c99 struct .initialisers
 1.41  02-Feb-2012  tls Entropy-pool implementation move and cleanup.

1) Move core entropy-pool code and source/sink/sample management code
to sys/kern from sys/dev.

2) Remove use of NRND as test for presence of entropy-pool code throughout
source tree.

3) Remove use of RND_ENABLED in device drivers as microoptimization to
avoid expensive operations on disabled entropy sources; make the
rnd_add calls do this directly so all callers benefit.

4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might
have lead to slight entropy overestimation for some sources.

5) Add new source types for environmental sensors, power sensors, VM
system events, and skew between clocks, with a sample implementation
for each.

ok releng to go in before the branch due to the difficulty of later
pullup (widespread #ifdef removal and moved files). Tested with release
builds on amd64 and evbarm and live testing on amd64.
 1.40  23-Dec-2011  jakllsch Revert previous due to active usbmp branch(es).
 1.39  22-Dec-2011  jakllsch Adjust-away inconsistent and trailing whitespace.
 1.38  03-Nov-2010  dyoung branches: 1.38.8; 1.38.12;
Stop using the compatibility macros USB_ATTACH(), USB_DETACH(),
USB_MATCH(), et cetera. These files produce the same assembly
(according to objdump -d) before and after the change, except for
if_cue.c where two adjacent instructions inexplicably change order.
 1.37  05-Apr-2010  joerg Push the bpf_ops usage back into bpf.h. Push the common ifp->if_bpf
check into the inline functions as well the fourth argument for
bpf_attach.
 1.36  19-Jan-2010  pooka branches: 1.36.2; 1.36.4;
Redefine bpf linkage through an always present op vector, i.e.
#if NBPFILTER is no longer required in the client. This change
doesn't yet add support for loading bpf as a module, since drivers
can register before bpf is attached. However, callers of bpf can
now be modularized.

Dynamically loadable bpf could probably be done fairly easily with
coordination from the stub driver and the real driver by registering
attachments in the stub before the real driver is loaded and doing
a handoff. ... and I'm not going to ponder the depths of unload
here.

Tested with i386/MONOLITHIC, modified MONOLITHIC without bpf and rump.
 1.35  06-Dec-2009  dyoung Simplify several device-activation hooks.
 1.34  23-Sep-2009  plunky fix up USB drivers printing of autoconf information

1. expand the USB_ATTACH_SETUP macro (requested by jmcneill)

2. reorder the attach function so that the first thing it does is print
newlines.

3. after this, we can call usbd_devinfo_alloc(), which polls the device
allowing a context switch, and aprint_normal() the device information.

this avoids problems where autoconf messages are getting mixed up.
 1.33  18-Mar-2009  cegger Ansify function definitions w/o arguments. Generated with sed.
 1.32  24-May-2008  cube branches: 1.32.6; 1.32.12;
Split device_t and softc for all USB device drivers, and related cosmetic
changes.

Matthias Drochner kindly reviewed this patch, and tested ums, ubt, uaudio
and ral. I tested umass myself.
 1.31  05-Apr-2008  cegger branches: 1.31.2; 1.31.4; 1.31.6;
use aprint_*_dev and device_xname
 1.30  19-Jan-2008  dyoung branches: 1.30.6;
Make many ethernet drivers share the common code for MII media
handling, ether_mediastatus() and ether_mediachange(). Check for
a non-ENXIO error return from mii_mediachg(). (ENXIO indicates
that a PHY is suspended.)

This patch shrinks the source code size by 979 lines. There was
a 5100-byte savings on the NetBSD/i386 kernel configuration, ALL.

I have made a few miscellaneous changes, too:

gem(4): use LIST_EMPTY(), LIST_FOREACH().
mtd(4): handle media ioctls, for a change!
axe(4): do not track link status in sc->axe_link any longer
nfe(4), aue(4), axe(4), udav(4), url(4): do not reset all PHYs
on a change of media

Except for the change to mtd(4), no functional changes are intended.

XXX This patch affects more architectures than I can feasibly
XXX compile and run. I have compiled macppc, sparc64, i386. I
XXX have run the patches on i386 boxen with bnx(4) and sip(4).
XXX Compiling and running on evbmips (MERAKI, ADM5120) is in
XXX progress.
 1.29  29-Aug-2007  dyoung branches: 1.29.6; 1.29.12;
Constify: LLADDR() -> CLLADDR().
 1.28  27-Aug-2007  xtraeme branches: 1.28.2;
Use rw_destroy() in the detach function. Spotted by rmind@.
 1.27  27-Aug-2007  xtraeme Use rwlock(9) rather than lockmgr(9).
 1.26  13-Mar-2007  drochner branches: 1.26.6; 1.26.10;
Introduce different autoconf interface attributes for USB drivers
matching (and handling) a whole device and those which match an
interface only. This will allow to enforce some rules, eg that
the former don't use interface information for matching or that the
latter don't modify global device state.
The previous way left too much freedom do the drivers which led to
inconsistencies and abuse.
For now, I've not changed locators and submatch rules, this will
happen later.
There should not be any change in behaviour, except in the case of
some drivers which did behave inconsistently:
if_atu, if_axe, uep: matched the configured device in the interface
stage, but did configuration again. I've converted them to match
in the device stage.
ustir, utoppy: matched in the interface stage, but only against
vendor/device information, and used any configuration/interface
without checking. Changed to match in device stage, and added
some simple code to configure and use the first interface.
If you have one of those devices, please test!
 1.25  04-Mar-2007  christos branches: 1.25.2; 1.25.4;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.24  01-Dec-2006  drochner branches: 1.24.4; 1.24.10;
change some commented-out code to use the interrupt descriptor's polling
interval instead of an own (which isn't even defined)
 1.23  16-Nov-2006  christos __unused removal on arguments; approved by core.
 1.22  31-Oct-2006  joerg Split the USB task queue into two parts, one for normal device tasks and
one for tasks of the host controllers. This is needed for drivers like
ural(4) that want to do synchronous USB transfers from the task handler.
Before the split timeouts could not be handled correctly as the task
thread was still blocked. From FreeBSD.
 1.21  12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.20  07-Sep-2006  dogcow branches: 1.20.2; 1.20.4;
remove more vestiges of CCITT, LLC, HDLC, NS, and NSIP.
 1.19  25-Feb-2006  wiz branches: 1.19.2;
Fix typos, reported by Alexey Dobriyan ("Gathered from Linux"),
forwarded by jmc@openbsd.
 1.18  28-Nov-2005  augustss branches: 1.18.2; 1.18.4; 1.18.6;
Use usbd_clear_endpoint_stall_async() when clearing endpoint stalls in
an interrupt context. From kern/32172 by darkstar@city-net.com.
 1.17  30-May-2005  christos branches: 1.17.2; 1.17.8;
- const poisoning
- eliminate variable shadowing
 1.16  11-May-2005  augustss Don't keep the devinfo string on the stack, instead use malloc/free.
This should cure some rare stack overflows.
 1.15  03-Mar-2005  itojun OQO ether port confirmed to be working
 1.14  02-Mar-2005  itojun OQO device still unstable on attach/whatever, so comment those entries out
 1.13  01-Mar-2005  itojun add OQO model 01 devices
 1.12  30-Oct-2004  thorpej branches: 1.12.4; 1.12.6;
When adding/deleting multicast addresses, only whack the address
filter if the interface is marked RUNNING.

Fixes kern/27678.
 1.11  22-Oct-2004  augustss Add 2 devices. From OpenBSD.
 1.10  07-Jul-2004  mycroft GREENHOUSE2_USBKR100 -> REALTEK_RTL8150L, per PR 20425.
 1.9  23-Apr-2004  itojun use bounded string ops (snprintf, strl*)
 1.8  04-Sep-2003  tsutsui branches: 1.8.2;
Remove advertising clauses from code written by Shingo WATANABE.
He has kindly consented it.
 1.7  15-Jan-2003  bouyer branches: 1.7.2;
When padding to URL_MIN_FRAME_LEN, memset the extra buffer space used.
 1.6  29-Sep-2002  martin Plug memory leak. From OpenBSD via PR kern/18457.
 1.5  11-Jul-2002  augustss Get rid of trailing white space.
 1.4  08-Jul-2002  augustss s/__FUNCTION__/__func__/
 1.3  13-May-2002  augustss branches: 1.3.2; 1.3.4; 1.3.6;
Two minor fixes from OpenBSD.
 1.2  28-Mar-2002  ichiro branches: 1.2.2;
URL_DEBUG was related to usb_port.h
 1.1  28-Mar-2002  ichiro add driver for Realtek RL8150L USB ethernet adapter

distribute from Shingo WATANABE <nabe@nabechan.org>
 1.2.2.6  17-Jan-2003  thorpej Sync with HEAD.
 1.2.2.5  18-Oct-2002  nathanw Catch up to -current.
 1.2.2.4  01-Aug-2002  nathanw Catch up to -current.
 1.2.2.3  20-Jun-2002  nathanw Catch up to -current.
 1.2.2.2  01-Apr-2002  nathanw Catch up to -current.
(CVS: It's not just a program. It's an adventure!)
 1.2.2.1  28-Mar-2002  nathanw file if_url.c was added on branch nathanw_sa on 2002-04-01 07:47:30 +0000
 1.3.6.4  10-Oct-2002  jdolecek sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work
 1.3.6.3  06-Sep-2002  jdolecek sync kqueue branch with HEAD
 1.3.6.2  23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.3.6.1  13-May-2002  jdolecek file if_url.c was added on branch kqueue on 2002-06-23 17:49:03 +0000
 1.3.4.1  27-Jan-2003  jmc Pullup revisions 1.6-1.7 (requested by bouyer in ticket #1095)
When padding to URL_MIN_FRAME_LEN, memset the extra buffer space used.
 1.3.2.1  15-Jul-2002  gehenna catch up with -current.
 1.7.2.7  11-Dec-2005  christos Sync with head.
 1.7.2.6  10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.7.2.5  04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.7.2.4  02-Nov-2004  skrll Sync with HEAD.
 1.7.2.3  21-Sep-2004  skrll Fix the sync with head I botched.
 1.7.2.2  18-Sep-2004  skrll Sync with HEAD.
 1.7.2.1  03-Aug-2004  skrll Sync with HEAD
 1.8.2.1  10-Jul-2004  tron branches: 1.8.2.1.2;
Pull up revision 1.10 (requested by mycroft in ticket #629):
GREENHOUSE2_USBKR100 -> REALTEK_RTL8150L, per PR 20425.
 1.8.2.1.2.1  24-Jan-2005  he Pull up revision 1.12 (requested by thorpej in ticket #939):
When adding or deleting multicast addresses, only change
the address filter if the interface is marked RUNNING.
Fixes PR#27678.
 1.12.6.1  19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.12.4.1  29-Apr-2005  kent sync with -current
 1.17.8.1  29-Nov-2005  yamt sync with head.
 1.17.2.4  21-Jan-2008  yamt sync with head
 1.17.2.3  03-Sep-2007  yamt sync with head.
 1.17.2.2  30-Dec-2006  yamt sync with head.
 1.17.2.1  21-Jun-2006  yamt sync with head.
 1.18.6.1  22-Apr-2006  simonb Sync with head.
 1.18.4.1  09-Sep-2006  rpaulo sync with head
 1.18.2.1  01-Mar-2006  yamt sync with head.
 1.19.2.1  14-Sep-2006  yamt sync with head.
 1.20.4.2  10-Dec-2006  yamt sync with head.
 1.20.4.1  22-Oct-2006  yamt sync with head
 1.20.2.2  12-Jan-2007  ad Sync with head.
 1.20.2.1  18-Nov-2006  ad Sync with head.
 1.24.10.6  25-Jun-2007  itohy New devices from OpenBSD:
- RealTek RTL8151 PNA
- ZyXEL Prestige
 1.24.10.5  22-Jun-2007  itohy Execute callback functions as tasks on FreeBSD.
(FYI, the code does work on NetBSD, but affects the performance, you know.)
 1.24.10.4  18-Jun-2007  itohy Pullup 1.26 (attach driver per interface) with #ifdef USB_USE_IFATTACH.
 1.24.10.3  17-Jun-2007  itohy Pullup 1.25 in a different way.
 1.24.10.2  13-Jun-2007  itohy - Convert to use usbd_map_buffer_mbuf() and eliminate mbuf-memory copy.
- Use common code in usb_ethersubr.[ch] and reduce duplicated code.
- XXX Use m_copyback() to extend mbuf chain. XXX Is this the right way?

XXX Untested, missing hardware.
 1.24.10.1  22-May-2007  itohy Overhaul of USB stack, mostly DMA related

This applies to NetBSD 4.99.13 (March 1, 2007)

usbdi(9) interface is based on FreeBSD version, excluding
- removal of portability code

Patch most NetBSD changes, excluding
- DMA memory "reserve", since we don't need contiguous buffers any longer
- volatiles in DMA structure, since it should not be needed
with proper bus_dmamap_sync(9)s

DMA/non-DMA memory management overhaul
- Move all DMA related code to usb_mem.[ch]
(add usb_alloc_buffer_dma(), usb_free_buffer_dma(), etc.).
XXX Should usb_mem.[ch] be renamed as usb_mem_dma.[ch] ?
- Add corresponding non-DMA code to usb_mem_nodma.[ch] .
Currently just use malloc(9).
- Above files are conditionally used by config framework (added
attributes to conf/files and dev/usb/files.usb).
- Add diagnostic panics when resource allocation is requested
on interrupt context.
- Change memory allocations (that require context) from NOWAIT to WAITOK.

Allocate DMA/non-DMA buffer per host interface, not globally.
advantage: Buffers can be freed on detaching host interface.
Activity of a host interface does not affect others.
disadvantages: It possibly consumes more memory.

API changes
- usbd_alloc_xfer() is changed:
old: usbd_xfer_handle usbd_alloc_xfer(usbd_device_handle dev);
new: usbd_xfer_handle usbd_alloc_xfer(usbd_device_handle dev,
usbd_pipe_handle pipe);
- pipe argument of usbd_setup_*xfer() are now unused
XXX the pipe argument should be removed?
- add mapping APIs
- async request will be processed as a task (kernel thread context),
and delayed to some extent
- usbdivar.h: struct usbd_xfer: renamed a member "allocbuf" to "hcbuffer"
(mapped/allocated/refered buffer for HCI driver)
- usb_port.h: change usb_proc_ptr from struct ptoc * to struct lwp *
- usb_port.h: add usb_sigproc_ptr for psignal(9) (struct proc *)
- usb.h: add UE_MAXPKTSZ(ep) and UE_MAXPKTSZ_MASK macros for USB 2.0

changes to USB device drivers
- atu, aue, axe, cdce, cue, kue, rum, udav, upl, ural, url,
uaudio, ubt, ucom, ugen, uhidev, uirda, ulpt, umidi, urio,
uscanner, ustir, utoppy:
* catch up API change of usbd_alloc_xfer()
- umass, usscanner:
* catch up API change of usbd_alloc_xfer()
* eliminate memory copy for large transfer

ohci
- free resources on detach
- add lots of bus_dmamap_sync() operations
- simplify the code of loading std chain
- rewrite code of looking up TD/ITD from DMA addr by using allocation chunk
- add workaround for CMD Tech 670 and 673 chipsets
- make sure resources are not allocated in interrupt context
- add support for mapping buffer and mbuf

slhci
- allocate xfer and slhci_xfer at once, and simplify relevant code
- add slhci_detach()
- remove second arg of slhci_attach() since it is the same as the first arg.
- add support for "mapping" (no, it doesn't map since it doesn't do DMA)
buffer and mbuf
- add pcmcia frontend
- NOT TESTED, missing hardware

ehci
- add lots of bus_dmamap_sync() operations, possibly too many
- make sure resources are not allocated in interrupt context
- add support for mapping buffer and mbuf
- done only simple test

uhci
- add lots of bus_dmamap_sync() operations, possibly too many
- make sure resources are not allocated in interrupt context
- add support for mapping buffer and mbuf

To do
- review, test, debug
- rewrite network drivers to utilize usbd_map_buffer_mbuf()
- rewrite uaudio(4) to eliminate memcpy
- "pipe" argument of usbd_setup_*xfer() should eventually be removed
 1.24.4.2  24-Mar-2007  yamt sync with head.
 1.24.4.1  12-Mar-2007  rmind Sync with HEAD.
 1.25.4.1  11-Jul-2007  mjf Sync with head.
 1.25.2.2  09-Oct-2007  ad Sync with head.
 1.25.2.1  13-Mar-2007  ad Sync with head.
 1.26.10.1  03-Sep-2007  jmcneill Sync with HEAD.
 1.26.6.1  03-Sep-2007  skrll Sync with HEAD.
 1.28.2.2  23-Mar-2008  matt sync with HEAD
 1.28.2.1  06-Nov-2007  matt sync with HEAD
 1.29.12.1  20-Jan-2008  bouyer Sync with HEAD
 1.29.6.1  18-Feb-2008  mjf Sync with HEAD.
 1.30.6.1  02-Jun-2008  mjf Sync with HEAD.
 1.31.6.1  23-Jun-2008  wrstuden Sync w/ -current. 34 merge conflicts to follow.
 1.31.4.3  11-Aug-2010  yamt sync with head.
 1.31.4.2  11-Mar-2010  yamt sync with head
 1.31.4.1  04-May-2009  yamt sync with head.
 1.31.2.1  04-Jun-2008  yamt sync with head
 1.32.12.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.32.6.1  28-Apr-2009  skrll Sync with HEAD.
 1.36.4.2  05-Mar-2011  rmind sync with head
 1.36.4.1  30-May-2010  rmind sync with head
 1.36.2.2  06-Nov-2010  uebayasi Sync with HEAD.
 1.36.2.1  30-Apr-2010  uebayasi Sync with HEAD.
 1.38.12.3  26-Feb-2012  mrg rename old usb_detach_wakeup/wait to usb_detach_{wake,wakeup}old().
 1.38.12.2  26-Feb-2012  mrg - add some more "XXXSMP ok" tags
- use cpu_softintr_p() instead of checking LP_INTR directly
 1.38.12.1  18-Feb-2012  mrg merge to -current.
 1.38.8.3  23-Jan-2013  yamt sync with head
 1.38.8.2  30-Oct-2012  yamt sync with head
 1.38.8.1  17-Apr-2012  yamt sync with head
 1.44.2.3  03-Dec-2017  jdolecek update from HEAD
 1.44.2.2  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.44.2.1  25-Feb-2013  tls resync with head
 1.47.10.1  07-Apr-2014  tls Be a little more clear and consistent about harvesting entropy from devices:

1) deprecate RND_FLAG_NO_ESTIMATE

2) define RND_FLAG_COLLECT_TIME, RND_FLAG_COLLECT_VALUE

3) define RND_FLAG_ESTIMATE_TIME, RND_FLAG_ESTIMATE_VALUE

4) define RND_FLAG_DEFAULT: RND_FLAG_COLLECT_TIME|
RND_FLAG_COLLECT_VALUE|RND_FLAG_ESTIMATE_TIME

5) Make entropy harvesting from environmental sensors a little more generic
and remove it from individual sensor drivers.

6) Remove individual open-coded delta-estimators for values from a few
places in the tree (uvm, environmental drivers).

7) 0 -> RND_FLAG_DEFAULT, actually gather entropy from various drivers
that had stubbed out code, other minor cleanups.
 1.48.8.2  26-Jan-2017  skrll Sync with HEAD/nhusb
 1.48.8.1  06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.48.4.13  05-Feb-2017  skrll Sync with HEAD
 1.48.4.12  26-Jan-2017  skrll consistent softc member name prefix
 1.48.4.11  05-Dec-2016  skrll Sync with HEAD
 1.48.4.10  09-Jul-2016  skrll Sync with HEAD
 1.48.4.9  19-Mar-2016  skrll Sync with HEAD
 1.48.4.8  28-Dec-2015  skrll Strictly follow the sequence abort pipe, destroy xfers, and close pipe as
API now requires. Plug some memory leaks in some drivers while doing
this.

Also, remove up_refcnt as it was broken and helped leak more memory.
 1.48.4.7  06-Oct-2015  skrll Move from usbd_{alloc,free}_xfer and usbd_{alloc,free}_buffer to
usbd_{create,destroy}_xfer. The API change will allow future changes
to HCDs to simplify the transfer resource allocation and activation.

Several devices tested including ucom, umass, smsc, uvideo, and uaudio.
 1.48.4.6  06-Jun-2015  skrll Sync with HEAD
 1.48.4.5  21-Mar-2015  skrll Add prefixes to attach_arg structure member names. No functional change.
 1.48.4.4  19-Mar-2015  skrll Do the same as OpenBSD and get rid of the *_handle typedefs and use
plain structures insteads
 1.48.4.3  05-Dec-2014  skrll KNF. Remove ( ) from return statements.
 1.48.4.2  02-Dec-2014  skrll Step #1 of memory allocation re-organisation.

Centralised the buffer allocation routine which now supports DMA
and non-DMA capable host controllers. Remove the
ubm_{alloc,free}m methods from usbd_bus_methods.

The buffer allocation is only allowed in thread context and,
therefore, negates the usefulness of the reserve dma code which
is removed in this change.

USBD_NO_COPY is also no longer required as usbd_transfer and
usbd_transfer_complete now track buffer usage and handle any
copying.
 1.48.4.1  30-Nov-2014  skrll Use C99 types. u_int{8,16,32,64}_t to uint{8,16,32,64}_t.

No functional change.
 1.48.2.3  08-Aug-2018  martin Pull up following revision(s) (requested by riastradh in ticket #1626):

sys/dev/usb/if_cue.c: revision 1.80
sys/dev/usb/umcs.c: revision 1.11
sys/dev/usb/umcs.c: revision 1.12
sys/dev/usb/if_ural.c: revision 1.56
sys/dev/usb/if_run.c: revision 1.28
sys/dev/usb/if_ural.c: revision 1.57
sys/dev/usb/if_run.c: revision 1.29
sys/dev/usb/uatp.c: revision 1.16
sys/dev/usb/uatp.c: revision 1.17
sys/dev/usb/if_axe.c: revision 1.91
sys/dev/usb/if_axe.c: revision 1.92
sys/dev/usb/if_zyd.c: revision 1.49
sys/dev/usb/if_axen.c: revision 1.15
sys/dev/usb/if_url.c: revision 1.60
sys/dev/usb/if_udav.c: revision 1.54
sys/dev/usb/if_axen.c: revision 1.16
sys/dev/usb/if_udav.c: revision 1.55
sys/dev/usb/if_athn_usb.c: revision 1.28
sys/dev/usb/if_athn_usb.c: revision 1.29
sys/dev/usb/if_urtw.c: revision 1.16
sys/dev/usb/if_urtw.c: revision 1.17
sys/dev/usb/if_cue.c: revision 1.79
sys/dev/usb/if_rum.c: revision 1.62
sys/dev/usb/if_urtwn.c: revision 1.61
sys/dev/usb/if_rum.c: revision 1.63
sys/dev/usb/if_urtwn.c: revision 1.63
sys/dev/usb/usb.c: revision 1.170
sys/dev/usb/usb.c: revision 1.171
sys/dev/usb/if_smsc.c: revision 1.35
sys/dev/usb/if_smsc.c: revision 1.36
sys/dev/usb/if_zyd.c: revision 1.50
sys/dev/usb/if_aue.c: revision 1.144
sys/dev/usb/if_aue.c: revision 1.145
sys/dev/usb/usb_subr.c: revision 1.225
sys/dev/usb/usb_subr.c: revision 1.226
sys/dev/usb/if_upgt.c: revision 1.21
sys/dev/usb/usbdi.h: revision 1.93
sys/dev/usb/if_upgt.c: revision 1.22
sys/dev/usb/if_url.c: revision 1.59
sys/dev/usb/usbdi.h: revision 1.95
sys/dev/usb/if_otus.c: revision 1.34
sys/dev/usb/if_atu.c: revision 1.62
sys/dev/usb/if_otus.c: revision 1.35
sys/dev/usb/if_atu.c: revision 1.63

New function usb_rem_task_wait(dev, task, queue).

If task is scheduled to run, removes it from the queue. If it may
have already begun to run, waits for it to complete. Caller must
guarantee it will not switch to another queue. If caller guarantees
it will not be scheduled again, then usb_rem_task_wait guarantees it
is not running on return.

This will enable us to fix a litany of bugs in detach where we
currently fail to wait for a pending task.

Use usb_rem_task_wait in various drivers.
 1.48.2.2  19-Feb-2018  snj Pull up following revision(s) (requested by skrll in ticket #1556):
sys/dev/usb/if_athn_usb.c: 1.25
sys/dev/usb/if_atu.c: 1.56
sys/dev/usb/if_aue.c: 1.142
sys/dev/usb/if_axe.c: 1.84
sys/dev/usb/if_axen.c: 1.12
sys/dev/usb/if_cdce.c: 1.45
sys/dev/usb/if_cue.c: 1.77
sys/dev/usb/if_kue.c: 1.91
sys/dev/usb/if_otus.c: 1.32
sys/dev/usb/if_rum.c: 1.59
sys/dev/usb/if_run.c: 1.25
sys/dev/usb/if_smsc.c: 1.33
sys/dev/usb/if_udav.c: 1.52
sys/dev/usb/if_upgt.c: 1.18
sys/dev/usb/if_upl.c: 1.61
sys/dev/usb/if_ural.c: 1.53
sys/dev/usb/if_url.c: 1.57
sys/dev/usb/if_urndis.c: 1.17
sys/dev/usb/if_urtw.c: 1.14
sys/dev/usb/if_urtwn.c: 1.56
sys/dev/usb/if_zyd.c: 1.45
sys/dev/usb/irmce.c: 1.4
sys/dev/usb/pseye.c: 1.24
sys/dev/usb/ubt.c: 1.60
sys/dev/usb/ucom.c: 1.120
sys/dev/usb/udsir.c: 1.6
sys/dev/usb/ugen.c: 1.137
sys/dev/usb/uhso.c: 1.27
sys/dev/usb/uirda.c: 1.43
sys/dev/usb/ulpt.c: 1.99
sys/dev/usb/umass.c: 1.163
sys/dev/usb/umidi.c: 1.74
sys/dev/usb/uscanner.c: 1.82
sys/dev/usb/usscanner.c: 1.43
sys/dev/usb/ustir.c: 1.39
sys/dev/usb/utoppy.c: 1.30
sys/dev/usb/uvideo.c: 1.46
PR kern/52931 Kernel panics with Atheros usb wireless interface
Audit the flags to usbd_create_xfer so that USBD_FORCE_SHORT_XFER is
supplied wherever such a transfer is setup. We can drop
USBD_SHORT_XFER_OK as it has not bearing on number of TDs
 1.48.2.1  05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.53.2.2  20-Mar-2017  pgoyette Sync with HEAD
 1.53.2.1  07-Jan-2017  pgoyette Sync with HEAD. (Note that most of these changes are simply $NetBSD$
tag issues.)
 1.56.8.3  29-Mar-2019  martin Pull up following revision(s) (requested by msaitoh in ticket #1224):

sys/dev/mii/tlphy.c: revision 1.65
sys/dev/usb/if_url.c: revision 1.62
sys/dev/usb/if_aue.c: revision 1.148

mii_phy_add_media() automatically install power handler, but if_media_add()
doesn't. When mii_phy_add_media() isn't used, call pmf_device_register().

-

Use pmf(9).

-

Use pmf(9).
 1.56.8.2  08-Aug-2018  martin Pull up following revision(s) (requested by riastradh in ticket #963):

sys/dev/usb/if_cue.c: revision 1.80
sys/dev/usb/umcs.c: revision 1.11
sys/dev/usb/umcs.c: revision 1.12
sys/dev/usb/if_ural.c: revision 1.56
sys/dev/usb/if_run.c: revision 1.28
sys/dev/usb/if_ural.c: revision 1.57
sys/dev/usb/if_run.c: revision 1.29
sys/dev/usb/uatp.c: revision 1.16
sys/dev/usb/uatp.c: revision 1.17
sys/dev/usb/if_axe.c: revision 1.91
sys/dev/usb/if_axe.c: revision 1.92
sys/dev/usb/if_zyd.c: revision 1.49
sys/dev/usb/if_axen.c: revision 1.15
sys/dev/usb/if_url.c: revision 1.60
sys/dev/usb/if_udav.c: revision 1.54
sys/dev/usb/if_axen.c: revision 1.16
sys/dev/usb/if_udav.c: revision 1.55
sys/dev/usb/if_athn_usb.c: revision 1.28
sys/dev/usb/if_athn_usb.c: revision 1.29
sys/dev/usb/if_urtw.c: revision 1.16
sys/dev/usb/if_urtw.c: revision 1.17
sys/dev/usb/if_cue.c: revision 1.79
sys/dev/usb/if_rum.c: revision 1.62
sys/dev/usb/if_urtwn.c: revision 1.61
sys/dev/usb/if_rum.c: revision 1.63
sys/dev/usb/if_urtwn.c: revision 1.63
sys/dev/usb/usb.c: revision 1.170
sys/dev/usb/usb.c: revision 1.171
sys/dev/usb/if_smsc.c: revision 1.35
sys/dev/usb/if_smsc.c: revision 1.36
sys/dev/usb/if_zyd.c: revision 1.50
sys/dev/usb/if_aue.c: revision 1.144
sys/dev/usb/if_aue.c: revision 1.145
sys/dev/usb/usb_subr.c: revision 1.225
sys/dev/usb/usb_subr.c: revision 1.226
sys/dev/usb/if_upgt.c: revision 1.21
sys/dev/usb/usbdi.h: revision 1.93
sys/dev/usb/if_upgt.c: revision 1.22
sys/dev/usb/if_url.c: revision 1.59
sys/dev/usb/usbdi.h: revision 1.95
sys/dev/usb/if_otus.c: revision 1.34
sys/dev/usb/if_atu.c: revision 1.62
sys/dev/usb/if_otus.c: revision 1.35
sys/dev/usb/if_atu.c: revision 1.63

New function usb_rem_task_wait(dev, task, queue).

If task is scheduled to run, removes it from the queue. If it may
have already begun to run, waits for it to complete. Caller must
guarantee it will not switch to another queue. If caller guarantees
it will not be scheduled again, then usb_rem_task_wait guarantees it
is not running on return.

This will enable us to fix a litany of bugs in detach where we
currently fail to wait for a pending task.

Use usb_rem_task_wait in various drivers.
 1.56.8.1  31-Jan-2018  martin Pull up following revision(s) (requested by skrll in ticket #509):
sys/dev/usb/if_ural.c: revision 1.53
sys/dev/usb/if_run.c: revision 1.25
sys/dev/usb/ustir.c: revision 1.39
sys/dev/usb/irmce.c: revision 1.4
sys/dev/usb/if_urtwn.c: revision 1.56
sys/dev/usb/pseye.c: revision 1.24
sys/dev/usb/if_rum.c: revision 1.59
sys/dev/usb/if_upl.c: revision 1.61
sys/dev/usb/ucom.c: revision 1.120
sys/dev/usb/if_zyd.c: revision 1.45
sys/dev/usb/if_axen.c: revision 1.12
sys/dev/usb/umidi.c: revision 1.74
sys/dev/usb/if_udav.c: revision 1.52
sys/dev/usb/if_athn_usb.c: revision 1.25
sys/dev/usb/usscanner.c: revision 1.43
sys/dev/usb/ualea.c: revision 1.6 - 1.9
sys/dev/usb/if_upgt.c: revision 1.18
sys/dev/usb/if_atu.c: revision 1.56
sys/dev/usb/utoppy.c: revision 1.30
sys/dev/usb/ubt.c: revision 1.60
sys/dev/usb/if_urtw.c: revision 1.14
sys/dev/usb/uirda.c: revision 1.43
sys/dev/usb/umass.c: revision 1.163
sys/dev/usb/if_cdce.c: revision 1.45
sys/dev/usb/if_cue.c: revision 1.77
sys/dev/usb/if_kue.c: revision 1.91
sys/dev/usb/uvideo.c: revision 1.46
sys/dev/usb/uhso.c: revision 1.27
sys/dev/usb/if_smsc.c: revision 1.33
sys/dev/usb/ugen.c: revision 1.137
sys/dev/usb/if_axe.c: revision 1.84
sys/dev/usb/if_aue.c: revision 1.142
sys/dev/usb/uscanner.c: revision 1.82
sys/dev/usb/if_urndis.c: revision 1.17
sys/dev/usb/udsir.c: revision 1.6
sys/dev/usb/if_url.c: revision 1.57
sys/dev/usb/if_otus.c: revision 1.32
sys/dev/usb/ulpt.c: revision 1.99

PR kern/52931 Kernel panics with Atheros usb wireless interface
Audit the flags to usbd_create_xfer so that USBD_FORCE_SHORT_XFER is
supplied wherever such a transfer is setup. We can drop
USBD_SHORT_XFER_OK as it has not bearing on number of TDs

ualea: Tidy up a bit. Fulfil requests completely.
Don't subtract uninitialized pktsize in error path.
 1.57.2.3  26-Jan-2019  pgoyette Sync with HEAD
 1.57.2.2  06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.57.2.1  28-Jul-2018  pgoyette Sync with HEAD
 1.58.2.2  13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.58.2.1  10-Jun-2019  christos Sync with HEAD
 1.66.2.2  13-Sep-2019  martin Pull up following revision(s) (requested by mrg in ticket #197):

sys/dev/usb/if_url.c: revision 1.71
sys/dev/usb/usbnet.h: revision 1.15
sys/dev/usb/usb_mem.c: revision 1.72
sys/dev/usb/if_urndis.c: revision 1.24
sys/dev/usb/if_upl.c: revision 1.67
sys/dev/usb/usbnet.c: revision 1.25
sys/dev/usb/usbnet.c: revision 1.26
sys/dev/usb/usbnet.c: revision 1.27
sys/dev/usb/usbnet.c: revision 1.28

Teach urndis to handle some REMOTE_NDIS_INDICATE_STATUS_MSG. If the status
is reasonable, don't tell userland we got an error. Stops spurious EIO.
From openbsd.

Fix bug, remove {0,0} because we switched to usb_lookup().

s/no free/no freelist entry/ in a debug message.

fix a lock hang reported by sc.dying in PR#54495.

remove locking in usbnet_tick(). assume that all locking
needs are handled inside usbnet_tick_task(), which runs in
the usbtask thread. ensure that usbnet private is valid
before using it.

also check NULL private pointer in usbnet_isdying().
all the other cases should never happen.

don't try to set dying when we haven't usbnet_attach()d yet.
reported by maxv.

- use CALLARGS vs CALLED for better usbhist
- turn off usbnetdebug default
- log for all entry/exit points of usbnet_pipe_intr()
- in usbnet_start_locked() track whether any packet has been
transmitted for setting the timer. avoids spurious
"watchdog timeouts"
- in usbnet_stop() use callout_halt() vs callout_halt, and
also stop the usb task. fixes crash of usbtask after the
phy has detached.
- add a little more defensive checking in the tick task, and
add some high-log-level logs.
- in usbnet_detach() move the call to usbnet_stop_ifp() above
the calls to callout/usbtask stopping.
- set ec_mii and unp_pri to NULL when freeing their data

normalise an error message.

document usbnet_private locking. minor knf.
 1.66.2.1  01-Sep-2019  martin Pull up following revision(s) (requested by mrg in ticket #135):

distrib/sets/lists/comp/mi 1.2279
distrib/sets/lists/modules/mi 1.123
share/man/man9/Makefile 1.438
share/man/man9/usbnet.9 1.1-1.9
sys/dev/ic/rndisreg.h 1.3
sys/dev/usb/TODO 1.47-1.52
sys/dev/usb/TODO.usbmp 1.15,1.16
sys/dev/usb/files.usb 1.157-1.167
sys/dev/usb/if_aue.c 1.155-1.161
sys/dev/usb/if_auereg.h 1.30-1.32
sys/dev/usb/if_axe.c 1.103-1.119
sys/dev/usb/if_axen.c 1.51-1.53,1.55-1.67
sys/dev/usb/if_axenreg.h 1.15
sys/dev/usb/if_cdce.c 1.54-1.67
sys/dev/usb/if_cue.c 1.85,1.86
sys/dev/usb/if_cuereg.h 1.23
sys/dev/usb/if_kue.c 1.97-1.100
sys/dev/usb/if_kuereg.h 1.23,1.24
sys/dev/usb/if_mue.c 1.51-1.55
sys/dev/usb/if_muereg.h 1.6
sys/dev/usb/if_muevar.h 1.9
sys/dev/usb/if_smsc.c 1.46-1.61
sys/dev/usb/if_smscreg.h 1.6
sys/dev/usb/if_smscvar.h delete
sys/dev/usb/if_udav.c 1.60-1.71
sys/dev/usb/if_udavreg.h 1.14,1.15
sys/dev/usb/if_upl.c 1.65,1.66
sys/dev/usb/if_ure.c 1.15-1.31
sys/dev/usb/if_urevar.h 1.4,1.5
sys/dev/usb/if_url.c 1.67-1.70
sys/dev/usb/if_urlreg.h 1.14
sys/dev/usb/if_urndis.c 1.22-1.33
sys/dev/usb/if_urtwn.c 1.72
sys/dev/usb/ohci.c 1.290
sys/dev/usb/uhub.c 1.143
sys/dev/usb/usb.c 1.180
sys/dev/usb/usb.h 1.118
sys/dev/usb/usb_mem.c 1.71
sys/dev/usb/usb_subr.c 1.238,1.239
sys/dev/usb/usbdevs 1.772
sys/dev/usb/usbdi.c 1.183,1.186
sys/dev/usb/usbdi.h 1.97
sys/dev/usb/usbdi_util.c 1.75
sys/dev/usb/usbhist.h 1.5,1.6
sys/dev/usb/usbnet.c 1.1-1.24
sys/dev/usb/usbnet.h 1.1-1.14
sys/dev/usb/usbroothub.c 1.9
sys/dev/usb/xhci.c 1.109,1.110
sys/modules/Makefile 1.223
sys/modules/usbnet/Makefile 1.1

usbnet(9): Add common framework for USB network devices.
This bring various safety fixes to all updated drivers,
and includes locking clean up, detach safety when being
used or not, separate rx/tx locks to improve performance,
porting to NET_MPSAFE, many edge/error case bugs in
drivers fixed, as well as resovling PRs 54303 and 54308.
These drivers are converted: axe(4), axen(4), aue(4),
cdce(4), cue(4), kue(4), mue(4), smsc(4), udav(4),
upl(4), ure(4), url(4), and urndis(4).
 1.72.2.1  29-Feb-2020  ad Sync with head.
 1.97.10.1  01-Jul-2024  perseant Sync with HEAD.
 1.97.4.1  13-Oct-2024  martin Pull up following revision(s) (requested by riastradh in ticket #965):

sys/dev/usb/if_url.c: revision 1.98

url(4): uint32_t for 32-bit hash so h>>31 becomes 0/1, not +1/-1.

Should avoid buffer overrun in PR 58382.

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