auto-negotiation results in half-duplex operation, excess collision
on the ethernet link may cause internal chip delays that may result
in subsequent valid frames being dropped due to insufficient
receive buffer resources. The workaround is to choose de-pipeline
method as a flow control decision for SDI. De-pipeline method
allows only 1 data in TxMbuf at a time such that a request to RDMA
from SDI is made only when TxMbuf is empty. Thanks for david for
providing detailed errata information.
PCI-express or PCI-X capabilities if we are running in a virtual machine.
- Whitelist the Intel 82440 chipset used by QEMU.
Tested by: jfv
MFC after: 1 week
feedback regarding user error.
Provide default loop and timing settings.
Add a new test that just times pread() without the open()/close().
Mark tests requiring a path argument so we can provide better feedback
to the user than EFAULT on (null).
Sponsored by: Google, Inc.
MFC after: 2 weeks
With r169630 I disabled symbol versioning because it broke rtld. With
r211706 rtld got broken for ia64 & powerpc64. It was fixed for powerpc64
with r212497. In between, r211749 removed the exports table because the
version script handled the exports. But wait, symbol versioning was
disabled on ia64.
With exports controlled by the version script and symbol versioning
disabled, all symbols are exported and too many symbols bind to the
definition in rtld. Let's just say that waird things happen.
So, enable symbol versioning on ia64 and apply a work-around for the
SIGSEGV that triggered r169630 to begin with: when rtld relocates
itself, it comes across r_debug_state and for some reason can't find the
definition. This causes a failure, relocation aborts and null pointers
galore. The work-around is to ignore the missing definition when rtld
is relocating itself and keep going.
Maybe with the next binutils this will all go away. Maybe not, in
which case I still need to figure out why r_debug_state cannot be found.
BTW: r_debug_state is in the symbol map -- I don't think any other rtld
symbols that rtld references are in the symbol map...
o We need an eval here to get the right expansion of the command
o bs=128k doesn't work in some cases, so eliminate it and cope with the
minor performance hit.
Submitted by: john hixson
suffer fewer rounding errors with smaller numbers; fix argc validation
so multiple tests run on a single command line.
Sponsored by: Google, Inc.
MFC after: 2 weeks
MOD_UNLOAD. This makes it possible to add custom hooks for other module
events.
Return EOPNOTSUPP when there is no callback available.
Pointed out by: jhb
Reviewed by: jhb
MFC after: 1 month
break the loop instead. We want to run the code after the while loop
to set an associd and capinfo. If we don't do this net80211 will drop
frames because it assumes the node has not yet been associated.
MFC after: 1 week
may be left. This fixes a memory leak that can occur when tracing is
disabled on a process via disabling tracing of a specific file (or if
an I/O error occurs with the tracefile) if the process's next system
call is exit(). The trace disabling code clears p_traceflag, so exit1()
doesn't do any KTRACE-related cleanup leading to the leak. I chose to
make the free'ing of pending records synchronous rather than patching
exit1().
- Move KTRACE-specific logic out of kern_(exec|exit|fork).c and into
kern_ktrace.c instead. Make ktrace_mtx private to kern_ktrace.c as a
result.
MFC after: 1 month
argument to be passed on the command line, allowing file-related tests
to be pointed at wherever desired.
Sponsored by: Google, Inc.
MFC after: 2 weeks
r214049 for the regular NFS server, so that it will not do
a VOP_LOOKUP() of ".." when at the root of a file system
when performing a ReaddirPlus RPC.
MFC after: 10 days
ignore BARs that are invalid due to having a size of zero, not to ignore
BARs with an existing base of zero. While here, reorganize the code
slightly to make the intent clearer.
Reported by: avg
MFC after: 1 week
each loop, rather than once up front. The distinction is unimportant
when doing a fix iteration count, but when using a timer, it should vary.
Sponsored by: Google, Inc.
MFC after: 2 weeks
its value as a loop invariant. Currently this is a no-op because
'atomic_cmpset_int()' clobbers all memory on current architectures.
- Use atomic_fetchadd_int() instead of an atomic_cmpset_int() loop to drop
a reference in vmspace_free().
Reviewed by: alc
MFC after: 1 month
- Use getopt rather than hand-parsed arguments
- Allow iterations to be specified and/or a new number of seconds bound
on the number of iterations
- Fix printout of timer resolution
- Add new tests, such as TCP and UDP socket creation, and open/read/close
of /dev/zero and /dev/null.
Sponsored by: Google, Inc.
MFC after: 2 weeks
local variable issue. This patch decompresses compressed images to the
stdout when writing to a device to avoid running out of space issues.
Submitted by: John Hixson
Pr: 151049
- move all the chunks into one file, which allows to hide SIOCGIFCONF32
global definition as well.
- replace __amd64__ with proper COMPAT_FREEBSD32 around.
- handle 32bit capacity before going into the handler itself instead of
doing internal 32bit specific changes within it (e.g. as it's done for
SIOCGDEFIFACE32_IN6).
- use explicitely sized types for ABI compat.
Approved by: kib (mentor)
MFC after: 2 weeks
microbenchmark suite:
- Use common benchmark_start/benchmark_stop routines to simplify
individual benchmarks.
- Add a central table of tests with names, where new tests can be
hooked in easily.
- Add new benchmarks for dup, shm_open, shm_open + fstat, fork,
vfork, vfork + exec, chroot, setuid.
- Accept a number of loops, not just a number of iterations.
- Report results more usefully in a table.
Sponsored by: Google, Inc.
MFC after: 2 weeks
Instead of only returning NULL when the entry is invalid and can't be
matched against the current database, also return it when it cannot open
the log files properly.
It's a bit more pedantic regarding .Bl list elements. This has an added
benefit of unbreaking the ipfw(8) manpage, where groff was silently
skipping one list element.
st_ino larger than 2**31.
From the PR:
Printing from a ZFS filesystem using 'lp' fails and returns an
email reporting "Your printer job was not printed because it was
not linked to the original file".
In order to protect against files being switched when files
are printed using 'lp' or 'lpr -s', the st_dev and st_ino
values for the original file are saved by lpr and verified
by lpd before the file is printed. Unfortunately, lpr prints
both values using '%d' (although both fields are unsigned)
and lpd(8) assumes a string of decimal digits.
ZFS (at least) generates st_dev values greater than 2^31-1,
resulting in negative values being printed - which lpd cannot
parse, leading it to report that the file has been switched.
A similar problem would occur with large inode numbers.
How-To-Repeat:
Find a file with either st_dev or st_ino greater than 2^31-1
(stat(1) will report both numbers) and print it with 'lpq -s'.
This should generate an email reporting that the file could
not be printed because it was not linked to the original file
PR: bin/151567
Submitted by: Peter Jeremy <Peter.Jeremy@alcatel-lucent.com>
MFC after: 1 week
Specification Rev. 1.2. Rename pp_pcmcsr field of PM capabilities to pp_bse
to avoid further confusions and adjust some comments accordingly. The real
PMCSR (Power Management Control/Status Register) is PCIR_POWER_STATUS and
it is actually BSE (PCI-to-PCI Bridge Support Extensions) register.
Before this change if you wanted to suspend your laptop and be sure that your
encryption keys are safe, you had to stop all processes that use file system
stored on encrypted device, unmount the file system and detach geli provider.
This isn't very handy. If you are a lucky user of a laptop where suspend/resume
actually works with FreeBSD (I'm not!) you most likely want to suspend your
laptop, because you don't want to start everything over again when you turn
your laptop back on.
And this is where geli suspend/resume steps in. When you execute:
# geli suspend -a
geli will wait for all in-flight I/O requests, suspend new I/O requests, remove
all geli sensitive data from the kernel memory (like encryption keys) and will
wait for either 'geli resume' or 'geli detach'.
Now with no keys in memory you can suspend your laptop without stopping any
processes or unmounting any file systems.
When you resume your laptop you have to resume geli devices using 'geli resume'
command. You need to provide your passphrase, etc. again so the keys can be
restored and suspended I/O requests released.
Of course you need to remember that 'geli suspend' won't clear file system
cache and other places where data from your geli-encrypted file system might be
present. But to get rid of those stopping processes and unmounting file system
won't help either - you have to turn your laptop off. Be warned.
Also note, that suspending geli device which contains file system with geli
utility (or anything used by 'geli resume') is not very good idea, as you won't
be able to resume it - when you execute geli(8), the kernel will try to read it
and this read I/O request will be suspended.
