operands are consumed so use the appropriate constraint modifier.
Before this change GCC used one register for both an input and an
unrelated output operand of in_addword(), causing the input to be
overwritten before it was consumed and thus breaking in_addword().
For in_cksum_hdr() and in_pseudo() this change is more or less
cosmetic.
- Fix a misspelling in a nearby comment.
Reported & tested by: yongari
MFC after: 1 week
The minimum / maximum speed was way too low / high!
minspeed = 2000 - is this for real ?
maxspeed = 767999 - is this for real ?????
Wrap everything into 8000 - 48000 boundary, just to be safe.
MFC after: 3 days
Correct insecure temporary file usage in ee. [06:02]
Correct a race condition when setting file permissions, sanitize file
names by default, and fix a buffer overflow when handling files
larger than 4GB in cpio. [06:03]
Fix an error in the handling of IP fragments in ipfw which can cause
a kernel panic. [06:04]
Security: FreeBSD-SA-06:01.texindex
Security: FreeBSD-SA-06:02.ee
Security: FreeBSD-SA-06:03.cpio
Security: FreeBSD-SA-06:04.ipfw
- Mark MPSAFE since most of the locking procedures already implemented.
- Turn on inverted external amplifier sense flag for selected boards.
Tested by: bland
MFC after: 1 week
attempted to cast a struct ifnet to a struct fw_com which resulted in
data corruption.
PR: kern/91307
Submitted by: Alex Semenyaka <alex at semenyaka do ru>
MFC After: 6 days
operations before returning. Point the bus at a dummy cam_sim
structure so that any CCBs will complete immediately with a
CAM_DEV_NOT_THERE status, and ensure that any xpt_schedule() calls
on the bus's devices will immediately call the peripheral's
periph_start() routine. Also repeat the async messages because
devices that were part of the way through being probed may appear
after the original AC_LOST_DEVICE was sent, and would otherwise
never go away.
These changes make it possible to deregister a bus and free the SIM
at most stages during bus probing without the usual crashes in
camisr(). In particular, plugging in a umass device and then
unplugging it as soon as the first probe messages appeared would
almost always result in a crash. Now the device just goes away with
a few CAM errors and all references to the CAM bus, target and
device are dropped correctly.
- Only update the rx ring consumer pointer after running through the rx loop,
not with each iteration through the loop.
- If possible, use a fast interupt handler instead of an ithread handler. Use
the interrupt handler to check and squelch the interrupt, then schedule a
taskqueue to do the actual work. This has three benefits:
- Eliminates the 'interrupt aliasing' problem found in many chipsets by
allowing the driver to mask the interrupt in the NIC instead of the
OS masking the interrupt in the APIC.
- Allows the driver to control the amount of work done in the interrupt
handler. This results in what I call 'adaptive polling', where you get
the latency benefits of a quick response to interrupts with the
interrupt mitigation and work partitioning of polling. Polling is still
an option in the driver, but I consider it orthogonal to this work.
- Don't hold the driver lock in the RX handler. The handler and all data
associated is effectively serialized already. This eliminates the cost of
dropping and reaquiring the lock for every receieved packet. The result
is much lower contention for the driver lock, resulting in lower CPU usage
and lower latency for interactive workloads.
The amount of work done in the taskqueue is controlled by the sysctl
dev.em.N.rx_processing_limit
and tunable
hw.em.rx_process_limit
Setting these to -1 effectively removes the limit.
The fast interrupt and taskqueue can be disabled by defining NO_EM_FASTINTR.
This work has been shown to increase fast-forwarding from ~570 kpps to
~750 kpps (note that the same NIC hardware seems unable to transmit more than
800 kpps, so this increase appears to be limited almost solely by the
hardware). Gains have been shown in other workloads, ranging from better
performance to elimination of over-saturation livelocks.
Thanks to Andre Opperman for his time and resources from his network
performance project in performing much of the testing. Thanks to Gleb
Smirnoff and Danny Braniss for their help in testing also.
to COMPAT_43TTY.
Add COMPAT_43TTY to NOTES and */conf/GENERIC
Compile tty_compat.c only under the new option.
Spit out
#warning "Old BSD tty API used, please upgrade."
if ioctl_compat.h gets #included from userland.
Instead of dragging the entire ICH4/82801DB into this mess, select
only few boards based on pci subdevice / subvendor.
Tested by: Daisuke Orikasa <luxury-acura-3.5rl at nifty.com>
MFC after: 3 days
fast taskqueues. The following have been added:
TASKQUEUE_FAST_DEFINE() - create a global task queue.
an arbitrary execution context.
TASKQUEUE_FAST_DEFINE_THREAD() - create a global taskqueue that uses a
dedicated kthread.
taskqueue_create_fast() - create a local/private taskqueue.
These are all complimentary of the standard taskqueue functions. They are
primarily useful for fast interrupt handlers that can only use spinlock for
synchronization.
I personally think that the taskqueue API is starting to get too narrow and
hairy, but fixing it will require a major redesign on the API. Such a
redesign would be good but would break compatibility with FreeBSD 6.x, so
it really isn't desirable at this time.
Submitted by: sam
This is based on MCPC USB mobile phone guide line (MCPC-GL005)
Some other 3G system or so will work with this driver.
Kyocera PHS terminal (a.k.a. Kyopon) is known to work, which
is now supported by umodem(4) driver.
o record tsf in tx+rx frames
o switch from raw rssi to dbm for signal data and record both
signal and noise floor data (hacked for now to assume a fixed
noise floor; is correct with new hal)
o add monpass sysctl to control which rx'd frames are passed
up with errors; especially useful to see frames with CRC errors
o mark 'd packets w/ a CRC error with radiotap's BADFCS flag
Also add placeholder code for calibrating the noise floor when
using newer hals.
Reviewed by: avatar
MFC after: 1 week
param.h. Per request, I've placed these just after the
_NO_NAMESPACE_POLLUTION ifndef. I've not renamed anything yet, but
may since we don't need the __.
Submitted by: bde, jhb, scottl, many others.
CAM_LUN_INVALID or CAM_TID_INVALID. Retries were being triggered
here when a umass device was unplugged, and while the retries
themselves are probably harmless, they complicated finding the real
SIM removal problems.
the names of directories to include in the base ldconfig script.
This will eliminate the need for each port to install its own
boot script which does nothing but ldocnfig a given directory.
This code was developed by flz (ports committer), discussed on
freebsd-rc@, and modified slightly by me.
Submitted by: flz
Reviewed by: brooks
better, I discovered sn doing too many pointer dereferences. This
driver would do silly things like:
sn_foo(struct ifnet *ifp)
{
struct sn_softc *sc = ifp->if_softc;
sc->ifp->mumble
/* Other stuff */
}
while /* other stuff */ usually needed sc, the extra deref isn't
needed. Eliminate a few dozen of them.
and subsequently broke the build. This change is supposed to fix the
case where doing a mtx_destroy() off a spin mutex while you hold it fails.
If it had been tested I would just leave it in, but it hasn't been tested
yet, so it will have to wait until later.
to old-style signals, to be the DAR register for DSI miss exceptions.
This gives the address of the access rather than the instruction
address. The behaviour is now the same as on i386.
Found by: libsigsegv tests
defined to return an int, but on LP64 platforms the return value of
FD_ISSET() for file descriptors with a bit-index larger than 31 would
not fit an int (due to __fd_mask being defined as an unsigned long).
The fix is to explicitly test against 0.
PR: ia64/91421
Submitted by: Tanaka Akira (akr at m17n dot org)
MFC after: 1 week
