VM_KMEM_SIZE_MAX. Specifically, if the user/kernel address space split
was changed such that the kernel address space was greater than or equal
to 2 GB, then overflow would occur.
PR: 161721
MFC after: 3 weeks
There have still been intermittent problems with apparent TX
hangs for some customers. These have been problematic to reproduce
but I believe these changes will address them. Testing on a number
of fronts have been positive.
EM: there is an important 'chicken bit' fix for 82574 in the shared
code this is supported in the core here.
- The TX path has been tightened up to improve performance. In
particular UDP with jumbo frames was having problems, and the
changes here have improved that.
- OACTIVE has been used more carefully on the theory that some
hangs may be due to a problem in this interaction
- Problems with the RX init code, the "lazy" allocation and
ring initialization has been found to cause problems in some
newer client systems, and as it really is not that big a win
(its not in a hot path) it seems best to remove it.
- HWTSO was broken when VLAN HWTAGGING or HWFILTER is used, I
found this was due to an error in setting up the descriptors
in em_xmit.
IGB:
- TX is also improved here. With multiqueue I realized its very
important to handle OACTIVE only under the CORE lock so there
are no races between the queues.
- Flow Control handling was broken in a couple ways, I have changed
and I hope improved that in this delta.
- UDP also had a problem in the TX path here, it was change to
improve that.
- On some hardware, with the driver static, a weird stray interrupt
seems to sometimes fire and cause a panic in the RX mbuf refresh
code. This is addressed by setting interrupts late in the init
path, and also to set all interrupts bits off at the start of that.
support of new deltas for both em and igb drivers.
Note that I am not able to track all the bugs fixed in
this code, I am a consumer of it as a component of my
core drivers. It is important to keep the FreeBSD drivers
up to date with it however.
One important note is there is a key fix for 82574 in this
update. Also, there are lots of white space changes, I am
not happy about them but have no control over it :)
attack vector against applications that allow the applicant to specify
which policy to apply.
Submitted by: Matthias Drochner <drochner@netbsd.org>
MFC after: 1 week
- While here, make this compile and work on non-i386:
- Use CMSG_SPACE(), CMSG_LEN(), and CMSG_FIRSTHDR() instead of ignoring
padding between 'struct cmsghdr' and control message payloads.
- Don't initialize the control message before calling recvmsg().
Instead, check that we get a valid control message on return from
recvmsg().
- Use errx() instead of err() for some errors that don't report failures
that set errno.
Requested by: kib (1)
control. Controller does not automatically generate pause frames
based on number of available RX buffers so it's very hard to
know when driver should generate XON frame in time. The only
mechanism driver can detect low number of RX buffer condition is
ET_INTR_RXRING0_LOW or ET_INTR_RXRING1_LOW interrupt. This
interrupt is generated whenever controller notices the number of
available RX buffers are lower than pre-programmed value(
ET_RX_RING0_MINCNT and ET_RX_RING1_MINCNT register). This scheme
does not provide a way to detect when controller sees enough number
of RX buffers again such that efficient generation of XON/XOFF
frame is not easy.
While here, add more flow control related register definition.
interrupt is ours. Note, interrupts are automatically ACKed when
the status register is read.
Add RX/TX DMA error to interrupt handler and do full controller
reset if driver happen to encounter these errors. There is no way
to recover from these DMA errors without controller reset.
Rename local variable name intrs with status to enhance
readability.
While I'm here, rename ET_INTR_TXEOF and ET_INTR_RXEOF to
ET_INTR_TXDMA and ET_INTR_RXDMA respectively. These interrupts
indicate that a frame is successfully DMAed to controller's
internal FIFO and they have nothing to do with EOF(end of frame).
Driver does not need to wait actual end of TX/RX of a frame(e.g.
no need to wait the end signal of TX which is generated when a
frame in TX FIFO is emptied by MAC). Previous names were somewhat
confusing.
of a devfs file descriptor in devfs_close_f(). The passed in td argument
may be NULL if the close was invoked by garbage collection of open
file descriptors in pending control messages in the socket buffer of a
UNIX domain socket after it was closed.
PR: kern/151758
Submitted by: Andrey Shidakov andrey shidakov ru
Submitted by: Ruben van Staveren ruben verweg com
Reviewed by: kib
MFC after: 2 weeks
thread_free(newtd). This to avoid a possible page fault in
cpu_thread_clean() as seen on amd64 with syscall fuzzing.
Reviewed by: kib
MFC after: 1 week
: 2011-10-23 Ingo Schwarze <schwarze@openbsd.org>
:
: [mdoc] Synchronize string tables with the mandoc(1) utility.
:
: * tmac/doc-common: Add many architecture names used in NetBSD and
: OpenBSD (and "arm" from FreeBSD) and remove the duplicate OS version
: entry for Darwin-10.6.0.
:
: * tmac/doc-syms: Add many library names used in NetBSD and FreeBSD.
:
: * tmac/groff_mdoc.man: Document all supported architecture names, OS
: versions, and library names.
:
: 2011-09-11 Joseph Koshy <jkoshy@users.sourceforge.net>
:
: [mdoc] Add some library strings.
:
: * tmac/doc-syms: Add `libdwarf' and `libelf'.
: * tmac/groff_mdoc.man: Document them.
:
: 2011-07-03 Guillem Jover <guillem@debian.org>
:
: mdoc: Update more OS versions strings.
:
: * tmac/doc-common: Add versions strings for NetBSD, OpenBSD,
: FreeBSD, and DragonFly.
suspend state. This will save more power.
On resume, make sure to enable all clocks. While I'm here, if
controller is not fast ethernet, enable gigabit PHY.
Don't blindly re-initialize controller whenever MTU is changed.
Now, reinitializing is done only when driver is running.
While here, remove unnecessary assignment of error value since it
was already initialized to 0.
o Do not report link status if driver is not running.
o TX/RX MAC configuration should be done with resolved speed,
duplex and flow control after establishing a link so it can't
be done in driver initialization routine.
Move the configuration to miibus_statchg callback which will be
called whenever any link state change is detected.
At this moment, flow-control is not enabled yet mainly because
I was not able to set correct flow control parameters to
generate TX pause frames.
o Now TX/RX MAC is enabled only when a valid link is detected.
Rearragnge hardware initialization routine a bit to leave
enabling MAC to miibus_statchg callback. In order to that,
TX/RX DMA engine is enabled in et_init_locked().
o Introduce ET_FLAG_LINK flag to track current link state.
o Introduce ET_FLAG_FASTETHER flag to mark whether controller is
fast ethernet. This flag is checked in miibus_statchg callback
to know whether PHY established a valid link.
o In et_stop(), TX/RX MAC is explicitly disabled instead of
relying on et_reset(). And move et_reset() from et_stop() to
controller initialization. Controler reset is not required here
and it would also clear critial registers(i.e station address,
RX filter configuration, WOL etc) that are required to make WOL
work.
o Switching to current media is done in et_init_locked() after
setting IFF_DRV_RUNNING flag. This should ensure reliable
auto-negotiation/manual link establishment.
o In et_start_locked(), check whether driver got a valid link
before trying to send frames.
o Remove checking a link in et_tick() as this is done by
miibus_statchg callback.
