(reporting IFM_LOOP based on BMCR_LOOP is left in place though as
it might provide useful for debugging). For most mii(4) drivers it
was unclear whether the PHYs driven by them actually support
loopback or not. Moreover, typically loopback mode also needs to
be activated on the MAC, which none of the Ethernet drivers using
mii(4) implements. Given that loopback media has no real use (and
obviously hardly had a chance to actually work) besides for driver
development (which just loopback mode should be sufficient for
though, i.e one doesn't necessary need support for loopback media)
support for it is just dropped as both NetBSD and OpenBSD already
did quite some time ago.
- Let mii_phy_add_media() also announce the support of IFM_NONE.
- Restructure the PHY entry points to use a structure of entry points
instead of discrete function pointers, and extend this to include
a "reset" entry point. Make sure any PHY-specific reset routine is
always used, and provide one for lxtphy(4) which disables MII
interrupts (as is done for a few other PHYs we have drivers for).
This includes changing NIC drivers which previously just called the
generic mii_phy_reset() to now actually call the PHY-specific reset
routine, which might be crucial in some cases. While at it, the
redundant checks in these NIC drivers for mii->mii_instance not being
zero before calling the reset routines were removed because as soon
as one PHY driver attaches mii->mii_instance is incremented and we
hardly can end up in their media change callbacks etc if no PHY driver
has attached as mii_attach() would have failed in that case and not
attach a miibus(4) instance.
Consequently, NIC drivers now no longer should call mii_phy_reset()
directly, so it was removed from EXPORT_SYMS.
- Add a mii_phy_dev_attach() as a companion helper to mii_phy_dev_probe().
The purpose of that function is to perform the common steps to attach
a PHY driver instance and to hook it up to the miibus(4) instance and to
optionally also handle the probing, addition and initialization of the
supported media. So all a PHY driver without any special requirements
has to do in its bus attach method is to call mii_phy_dev_attach()
along with PHY-specific MIIF_* flags, a pointer to its PHY functions
and the add_media set to one. All PHY drivers were updated to take
advantage of mii_phy_dev_attach() as appropriate. Along with these
changes the capability mask was added to the mii_softc structure so
PHY drivers taking advantage of mii_phy_dev_attach() but still
handling media on their own do not need to fiddle with the MII attach
arguments anyway.
- Keep track of the PHY offset in the mii_softc structure. This is done
for compatibility with NetBSD/OpenBSD.
- Keep track of the PHY's OUI, model and revision in the mii_softc
structure. Several PHY drivers require this information also after
attaching and previously had to wrap their own softc around mii_softc.
NetBSD/OpenBSD also keep track of the model and revision on their
mii_softc structure. All PHY drivers were updated to take advantage
as appropriate.
- Convert the mebers of the MII data structure to unsigned where
appropriate. This is partly inspired by NetBSD/OpenBSD.
- According to IEEE 802.3-2002 the bits actually have to be reversed
when mapping an OUI to the MII ID registers. All PHY drivers and
miidevs where changed as necessary. Actually this now again allows to
largely share miidevs with NetBSD, which fixed this problem already
9 years ago. Consequently miidevs was synced as far as possible.
- Add MIIF_NOMANPAUSE and mii_phy_flowstatus() calls to drivers that
weren't explicitly converted to support flow control before. It's
unclear whether flow control actually works with these but typically
it should and their net behavior should be more correct with these
changes in place than without if the MAC driver sets MIIF_DOPAUSE.
Obtained from: NetBSD (partially)
Reviewed by: yongari (earlier version), silence on arch@ and net@
will generate a short terminated USB transfer if
the maximum NCM frame size is greater than what
the driver can handle.
Reported by: Matthias Benesch
MFC after: 7 days
Approved by: thompsa (mentor)
AX88772 controllers. ASIX added a new feature for AX88178/AX88772
controllers which allows combining multiple TX frames into a single
big frame. This was to overcome one of USB limitation where it
can't generate more than 8k interrupts/sec which in turn means USB
ethernet controllers can not send more than 8k packets per second.
Using ASIX's feature greatly enhanced TX performance(more than 3~4
times) compared to 7.x driver. However it seems r184610 removed
boundary checking for buffered frames which in turn caused
instability issues under certain conditions. In addition, using
ASIX's feature triggered another issue which made USB controller
hang under certain conditions. Restarting ethernet controller
didn't help under this hang condition and unplugging and replugging
the controller was the only solution. I believe there is a silicon
bug in TX frame combining feature on AX88178/AX88772 controllers.
To address these issues, reintroduce the boundary checking for both
AX88178 and AX88772 after copying a frame to USB buffer and do not
use ASIX's multiple frame combining feature. Instead, use USB
controller's multi-frame transmit capability to enhance TX
performance as suggested by Hans[1].
This should fix a long standing axe(4) instability issues reported
on AX88772 and AX88178 controllers. While I'm here remove
unnecessary TX frame length check since upper stack always
guarantee the size of a frame to be less than MCLBYTES.
Special thanks to Derrick Brashear who tried numerous patches
during last 4 months and waited real fix with patience. Without
this enthusiastic support, patience and H/W donation I couldn't fix
it since I was not able to trigger the issue on my box.
Suggested by: hselasky [1]
Tested by: Derrick Brashear (shadow <> gmail dot com>
H/W donated by: Derrick Brashear (shadow <> gmail dot com>
PR: usb/140883
information through devd. My E220 now produces the notification (1 line):
+u3g0 at bus=1 hubaddr=1 port=0 devaddr=2 interface=0 \
vendor=0x12d1 product=0x1003 devclass=0x00 devsubclass=0x00 \
sernum="" release=0x0000 intclass=0xff intsubclass=0xff \
ttyname=U0 ttyports=2 on uhub0
Note: serial/ufoma and net/uhso still provide port number and tty name
(uhso only) information through sysctls, which should now be removed.
Reviewed by: hpselasky
- hw.usb.ucom.cons_unit is now split into
hw.usb.ucom.cons_unit/...cons_subunit.
Note: The tunable/sysctl hw.usb.ucom.cons_unit needs to be reviewed if
a) a console was defined a USB serial devices, and a USB device with
more than 1 subunit is present, and this device is attached before the
device functioning as a console
or
b) a console was defined on a USB device with more than 1 subunit
Reviewed by: hps
MFC after: 2 weeks
- correct the ethernet payload remainder which
must be post-offseted by -14 bytes instead of
0 bytes. This is not very clearly defined in the
NCM specification.
- add development feature about limiting the
maximum datagram count in each NCM payload.
- zero-pad alignment data
- add TX-interval tuning sysctl
Approved by: thompsa (mentor)
It seems axe(4) controllers support interrupt endpoint such that
enabling interrupt endpoint generates about 1000 interrupts/sec.
Controllers transfer 8 bytes data through interrupt endpoint and
the data include link UP/DOWN state as well as some PHY related
information. Previously axe(4) didn't use the transferred data and
didn't even try to read the data. Because axe(4) counts on mii(4)
to detect link state changes there is no need to use interrupt
endpoint here.
This change fixes generation of unnecessary interrupts which was
seen when interface is brought to UP.
No objections from: hselasky
successfully received a frame but we failed to pass it to upper
stack due to lack of resources. So update if_iqdrops counter
instead of updating if_ierrors counter.
controllers combine multiple TX requests into single one if there
is room in TX buffer of controller. Updating TX packet counter at
the end of TX completion resulted in incorrect TX packet counter as
axe(4) thought it sent 1 packet. There is no easy way to know how
many combined TX were completed in the callback.
Because this change updates TX packet counter before actual
transmission, it may not be ideal one. But I believe it's better
than showing fake 8kpps under high TX load. With this change, TX
shows 221kpps on Linksus USB200M.
greater than 65535 bytes then the CDC driver might not work as expected, which
is not likely with the existing USB speeds.
Submitted by: Hans Petter Selasky
- Fixed the interface probe routine to only attach to USB interfaces the driver
actually supports. This allows other drivers to attach to things like
MicroSD slots etc.
- Fixed network interface enumeration to be globally sequential instead of
relying on the USB interface numbers. This make sure the first network
interface always is at uhso0 and the second at usho1 and so on.
- Added a radio kill switch; exposed through sysctl.
- Updated the manual page to be verbose about the number of serial ports and
include iCON 452 in the set of tested hardware.
Submitted by: Fredrik Lindberg
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
from standard 3G wireless units by supplying a raw IP/IPv6 endpoint rather than
using PPP over serial. uhsoctl(1) is used to initiate and close the WAN
connection.
Obtained from: Fredrik Lindberg <fli@shapeshifter.se>
message has been printed is enough to get someones attention. Also remove the
line number for DPRINTF/DPRINTFN, it already prints the funtion name and a
unique message.
