jhb [Wed, 6 Jun 2012 21:57:03 +0000 (21:57 +0000)]
MFC 233760:
Export some more useful info about shared memory objects to userland
via procstat(1) and fstat(1):
- Change shm file descriptors to track the pathname they are associated
with and add a shm_path() method to copy the path out to a caller-supplied
buffer.
- Use shm_path() to export the path of a shared memory object via
struct kinfo_file.
- Change procstat to always print out the path for a given object if it
is valid.
- Teach fstat about shared memory objects and to display their path,
mode, and size.
emax [Wed, 6 Jun 2012 16:20:59 +0000 (16:20 +0000)]
MFC r235854
Seems applicable here as well.
Tweak condition for disabling allocation from per-CPU buckets in
low memory situation. I've observed a situation where per-CPU
allocations were disabled while there were enough free cached pages.
Basically, cnt.v_free_count was sitting stable at a value lower
than cnt.v_free_min and that caused massive performance drop.
Reviewed by: alc
Requested by: Andrew Boyer aboyer at averesystems dot com
jhb [Wed, 6 Jun 2012 16:01:45 +0000 (16:01 +0000)]
MFC 228509,228620,228533:
Add a helper API to allow in-kernel code to map portions of shared memory
objects created by shm_open(2) into the kernel's address space. This
provides a convenient way for creating shared memory buffers between
userland and the kernel without requiring custom character devices.
mav [Wed, 6 Jun 2012 12:36:40 +0000 (12:36 +0000)]
MFC r223084 (by gibbs):
sys/cam/scsi/scsi_da.c:
- Only attempt the closing synchronize cache on a disk
if it is still there.
- When a device is lost, report the number of outstanding
I/Os as they are drained.
- When a device is lost, return any unprocessed bios with
ENXIO instead of EIO.
- Filter asynchronous events, but always allow cam_periph_async()
to see them too.
mav [Wed, 6 Jun 2012 11:46:37 +0000 (11:46 +0000)]
MFC r208911 (by mjacob):
Implement the usage of Report Luns as part of SCSI probing for SCP3 or
better devices. This can be disabled on a per-device basis using quirks as
well.
This also handles the case where there is actually no connected LUN 0
(which can definitely be the case for storage arrays).
mav [Wed, 6 Jun 2012 11:40:16 +0000 (11:40 +0000)]
MFC r208896, r208900 (by mjacob):
Do a minor amount of stylifying. Also, get a Fibre Channel WWPN if one exists
for a da unit and create a sysctl OID for it.
Interface addresses are refcounted as packets move through the stack,
and there's garbage collection tied to it so that address changes can
safely propagate while traffic is flowing. In our setup, we weren't
changing or deleting any addresses, but the refcounting logic in
ip6_input() was wrong and caused a reference leak on every inbound
V6 packet. This eventually caused a 32bit overflow, and the resulting
0 value caused the garbage collection to run on the active address.
That then snowballed into the panic.
dougb [Mon, 4 Jun 2012 22:21:55 +0000 (22:21 +0000)]
Upgrade to 9.6-ESV-R7-P1, the latest from ISC. This version contains
a critical bugfix:
Processing of DNS resource records where the rdata field is zero length
may cause various issues for the servers handling them.
Processing of these records may lead to unexpected outcomes. Recursive
servers may crash or disclose some portion of memory to the client.
Secondary servers may crash on restart after transferring a zone
containing these records. Master servers may corrupt zone data if the
zone option "auto-dnssec" is set to "maintain". Other unexpected
problems that are not listed here may also be encountered.
All BIND users are strongly encouraged to upgrade.
mav [Mon, 4 Jun 2012 07:05:13 +0000 (07:05 +0000)]
MFC r235333:
Add two functions xpt_batch_start() and xpt_batch_done() to the CAM SIM KPI
to allow drivers to handle request completion directly without passing
them to the CAM SWI thread removing extra context switch.
Modify all ATA/SATA drivers to use them.
rea [Sun, 3 Jun 2012 18:05:19 +0000 (18:05 +0000)]
OpenSSH: allow VersionAddendum to be used again
Prior to this, setting VersionAddendum will be a no-op: one will
always have BASE_VERSION + " " + VERSION_HPN for VersionAddendum
set in the config and a bare BASE_VERSION + VERSION_HPN when there
is no VersionAddendum is set.
HPN patch requires both parties to have the "hpn" inside their
advertized versions, so we add VERSION_HPN to the VERSION_BASE
if HPN is enabled and omitting it if HPN is disabled.
VersionAddendum now uses the following logics:
* unset (default value): append " " and VERSION_ADDENDUM;
* VersionAddendum is set and isn't empty: append " "
and VersionAddendum;
* VersionAddendum is set and empty: don't append anything.
jilles [Sun, 3 Jun 2012 11:31:45 +0000 (11:31 +0000)]
MFC r236193: libfetch: Avoid SIGPIPE on network connections.
To avoid unexpected process termination from SIGPIPE when writing to a
closed network connection, enable SO_NOSIGPIPE on all network connections.
The POSIX standard MSG_NOSIGNAL is not used since it requires modifying all
send calls to add this flag. This is particularly nasty for SSL connections.
marius [Sat, 2 Jun 2012 19:15:21 +0000 (19:15 +0000)]
MFC: r236328
Try to finally get the point in time at which bge_add_sysctls() is called
right; it needs to be called before bge_can_use_msi() but in turn requires
bge_flags to be properly set.
marius [Sat, 2 Jun 2012 19:11:47 +0000 (19:11 +0000)]
MFC: r236156
- Fix some typos in mmc_acquire_bus() and mmc_send_csd().
- Fix some math errors in mmc_decode_csd_sd().
- Fix incorrect arguments to mmc_send_app_op_cond() in mmc_go_discovery().
- Add reporting of CSD for debug purposes.
- Add detection (and skipping) of password-locked cards.
- Add setting of block length on card if necessary.
marius [Sat, 2 Jun 2012 18:57:16 +0000 (18:57 +0000)]
MFC: r236061
- When creating the DMA tag for user data, don't ask for more segments
than required for handling MAXPHYS and report the resulting maximum
I/O size to CAM instead of implicitly limiting it to DFLTPHYS.
- Move the variables of sym_action2() out of nested scope as required
by style(9) and remove extraneous curly braces.
- Replace a magic value for PCIR_COMMAND with the appropriate macro.
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.
bapt [Sat, 2 Jun 2012 15:14:12 +0000 (15:14 +0000)]
MFC: 228545,229572
Modify pw_copy:
- if pw is NULL and oldpw is not NULL then the oldpw is deleted
- if pw->pw_name != oldpw->pw_name but pw->pw_uid == oldpw->pw_uid
then it renames the user
add new gr_* functions so now gr_util API is similar to pw_util API,
this allow to manipulate groups in a safe way.
Add new pw_make_v7 to make a passwd line (in v7 format) out of a struct passwd
iwasaki [Fri, 1 Jun 2012 13:21:32 +0000 (13:21 +0000)]
MFC r235692,235772,236220,236221:
- Don't start the sleep state transition procedure while sleep is
disabled or the system is in shutdown procedure.
- Ignore the power button press event for resuming rather than starting
shutdown.
- Fix the problem acpi_sleep_force() hang.
- Reorder resume procedures to avoid hang during AcpiLeaveSleepState()
execution.
rstone [Wed, 30 May 2012 23:42:48 +0000 (23:42 +0000)]
MFC r235459 and r235471
r235459:
Implement the DTrace sched provider. This implementation aims to be
compatible with the sched provider implemented by Solaris and its open-
source derivatives. Full documentation of the sched provider can be found
on Oracle's DTrace wiki pages.
Note that for compatibility with scripts originally written for Solaris,
serveral probes are defined that will never fire. These probes are defined
to fire when Solaris-specific features perform certain actions. As these
features are not present in FreeBSD, the probes can never fire.
Also, I have added a two probes that are not defined in Solaris, lend-pri
and load-change. These probes have been added to make it possible to
collect schedgraph data with DTrace.
Finally, a few probes are defined in Solaris to take a cpuinfo_t *
argument. As it was not immediately clear to me how to translate that to
FreeBSD, currently those probes are passed NULL in place of a cpuinfo_t *.
Sponsored by: Sandvine Incorporated
r235471:
Fix typo in function name SDT_PROBE4 and unbreak 4BSD UP.
jhb [Wed, 30 May 2012 16:13:34 +0000 (16:13 +0000)]
MFC 234501:
The amr(4) firmware contains a rather dubious "feature" where it
assumes for small buffers (< 64k) that the OS driver is actually using
a buffer rounded up to the next power of 2. It also assumes that the
buffer is at least 4k in size. Furthermore, there is at least one
known instance of megarc sending a request with a 12k buffer where the
firmware writes out a 24k-ish reply.
To workaround the data corruption triggered by this "feature", ensure
that buffers for user commands use a minimum size of 32k, and that
buffers between 32k and 64k use a 64k buffer.
jimharris [Tue, 29 May 2012 23:15:23 +0000 (23:15 +0000)]
MFC r234106, r235751:
Queue CCBs internally instead of using CAM_REQUEUE_REQ status. This fixes
problem where userspace apps such as smartctl fail due to CAM_REQUEUE_REQ
status getting returned when tagged commands are outstanding when smartctl
sends its I/O using the pass(4) interface.
yongari [Tue, 29 May 2012 04:53:46 +0000 (04:53 +0000)]
MFC r235821:
Don't force max payload size to 128. Root complex and Endpoint will
negotiate with each other on the TLP payload size so blindly
forcing the size to 128 can cause a completion error which in turn
will stop device.
yongari [Tue, 29 May 2012 04:32:27 +0000 (04:32 +0000)]
MFC r235816:
Make IPMI work in the bce driver even when the interface is
configured down. Formerly, IPMI communication was lost whenever the
interface was not up. The reason was that the BCE_EMAC_MODE
register was not configured with the correct media settings. There
are two parts to the fix.
First, resetting the chip in bce_reset() causes the BCE_EMAC_MODE
register to be initialized to a default value that does not
necessarily correspond to the actual media settings. The fix
implemented here is a bit of a hack. Ideally, at the end of
bce_reset() we would poll the PHY to determine the negotiated media,
and then we would set the BCE_EMAC_MODE register accordingly. That
is difficult, since the PHY is abstracted behind the MII layer and is
not supposed to be queried directly from the MAC driver. Instead,
we read the BCE_EMAC_MODE register at the beginning of bce_reset()
and then restore its media bits to their original values before
returning. If IPMI is up and running, then the link is already
established and the BCE_EMAC_MODE register is already set appropriately
when bce_reset() is called. If IPMI is not running, no harm is
done by preserving the BCE_EMAC_MODE settings. The driver will set
the register properly once the interface is configured up and link
is established.
Second, bce_miibus_statchg() is sometimes called when the link is
down. In that case, the reported media settings are invalid.
Formerly, the driver used them anyway to setup the BCE_EMAC_MODE
register. We now avoid changing any MAC registers unless link is
active and the reported media settings are valid.
des [Mon, 28 May 2012 21:25:19 +0000 (21:25 +0000)]
MFH r208957: check return value from archive_read_new()
MFH r214137, r214140, r214174, r224584: support reading from stdin
MFH r230044, r233456: style and markup nits
MFH r234311: correct name in copyright statement
rstone [Sun, 27 May 2012 19:03:16 +0000 (19:03 +0000)]
MFC r225640
Clear transmit checksum offload context state upon lem(4) interface
initialization. Prior to this change packets may be transmitted with an
incorrect checksum.
em(4) already has an equivalent change in r213234.
rstone [Sun, 27 May 2012 18:57:20 +0000 (18:57 +0000)]
MFC r234691
Implement the D "cpu" variable, which returns curcpu. I have chosen not
to follow the example of OpenSolaris and its descendants, which implemented
cpu as an inline that took a value out of curthread. At certain points in
the FreeBSD scheduler curthread->td_oncpu will no longer be valid (in
particukar, just before the thread gets descheduled) so instead I have
implemented this as its own built-in variable.
marius [Sun, 27 May 2012 15:48:25 +0000 (15:48 +0000)]
MFC: r235255 (partial)
Change the module order of this MAC driver to be last so its is
deterministically handled after the corresponding PHY drivers when
loaded as module. Otherwise, when this MAC/PHY driver combination
is compiled into a single module, probing the PHY drivers may fail.
This makes r151438 actually work.
Reported and tested by: yongari (for fxp(4))
Given that r226154 isn't part of stable/8, the other drivers fixed
as part of the original r235255 aren't affected here.
rstone [Sun, 27 May 2012 14:52:31 +0000 (14:52 +0000)]
MFC r233552
Instead of only iterating over the set of known SDT probes when sdt.ko is
loaded and unloaded, also have sdt.ko register callbacks with kern_sdt.c
that will be called when a newly loaded KLD module adds more probes or
a module with probes is unloaded.
This fixes two issues: first, if a module with SDT probes was loaded after
sdt.ko was loaded, those new probes would not be available in DTrace.
Second, if a module with SDT probes was unloaded while sdt.ko was loaded,
the kernel would panic the next time DTrace had cause to try and do
anything with the no-longer-existent probes.
This makes it possible to create SDT probes in KLD modules, although there
are still two caveats: first, any SDT probes in a KLD module must be part
of a DTrace provider that is defined in that module. At present DTrace
only destroys probes when the provider is destroyed, so you can still
panic the system if a KLD module creates new probes in a provider from a
different module(including the kernel) and then unload the the first module.
Second, the system will panic if you unload a module containing SDT probes
while there is an active D script that has enabled those probes.
rstone [Sun, 27 May 2012 14:25:16 +0000 (14:25 +0000)]
MFC r227441
Correct the types of the arguments to return probes of the syscall
provider. Previously we were erroneously supplying the argument types of
the corresponding entry probe.
rmacklem [Sun, 27 May 2012 14:20:46 +0000 (14:20 +0000)]
MFC: r235332
PR# 165923 reported intermittent write failures for dirty
memory mapped pages being written back on an NFS mount.
Since any thread can call VOP_PUTPAGES() to write back a
dirty page, the credentials of that thread may not have
write access to the file on an NFS server. (Often the uid
is 0, which may be mapped to "nobody" in the NFS server.)
Although there is no completely correct fix for this
(NFS servers check access on every write RPC instead of at
open/mmap time), this patch avoids the common cases by
holding onto a credential that recently opened the file
for writing and uses that credential for the write RPCs
being done by VOP_PUTPAGES() for both NFS clients.
rmacklem [Sun, 27 May 2012 12:47:35 +0000 (12:47 +0000)]
MFC: r234740
Fix a leak of namei lookup path buffers that occurs when a
ZFS volume is exported via the new NFS server. The leak occurred
because the new NFS server code didn't handle the case where
a file system sets the SAVENAME flag in its VOP_LOOKUP() and
ZFS does this for the DELETE case.
rstone [Sun, 27 May 2012 00:38:36 +0000 (00:38 +0000)]
MFC 227430
On i386, fbt probes are implemented by writing an invalid opcode over
certain instructions in a function prologue or epilogue. DTrace has a
hook into the invalid opcode fault handler that checks whether the fault
was due to an probe and if so, runs the DTrace magic.
Upon returning from an invalid opcode fault caused by a probe, DTrace must
emulate the instruction that was replaced with the invalid opcode and then
return control to the instruction following the invalid opcode.
There were a pair of related bugs in the emulation for the leave
instruction. The leave instruction is used to pop off a stack frame prior
to returning from a function. The emulation for this instruction must
move the trap frame for the invalid opcode fault down the stack to the
bottom of the stack frame that is being removed, and then execute an iret.
At two points in this process, the emulation code was storing values above
the current value of the stack pointer. This opened up a window in which
if we were two take an interrupt, the trap frame for the interrupt would
overwrite the values stored on the stack, causing the system to panic
later.
The first bug was that at one point the emulation code saves the new value
for $esp above the current stack pointer value. The fix is to save this
value instead inside of the original trap frame. At this point we do
not need the original trap frame so this is safe.
The second bug is that when the emulate code loads $esp from the stack, it
points part-way through the new trap frame instead of at its beginning.
The emulation code adjusts the stack pointer to the correct value
immediately afterwards, but this still leaves a one instruction window in
which an interrupt would corrupt this trap frame. Fix this by adjusting
the stack frame value before loading it into $esp.
This fixes panics in invop_leave on i386 when using fbt return probes.
rstone [Sun, 27 May 2012 00:34:56 +0000 (00:34 +0000)]
MFC 227429
The generated Makefile for the kernel was not running ctfconvert on
object files corresponding to source files that had the compile-with
option set in conf/files. This means that any fbt probes for functions
in that object file would not have correct argument types.
The fix is to run ctfconvert on any target file that does not have the
no-obj option set in files.
PR: bin/160275
Reported by: Paul Ambrose (ambrosehua AT gmail DOT com)
marius [Sat, 26 May 2012 09:31:25 +0000 (09:31 +0000)]
MFC: r234524
o Fixes:
- When switching to 4-bit operation, send a SET_CLR_CARD_DETECT command
to disconnect the card-detect pull-up resistor from the DAT3 line before
sending the SET_BUS_WIDTH command.
- Add the missing "reserved" zero entry to the mantissa table used to
decode various CSD fields. This was causing SD cards to report that they
could run at 30 MHz instead of the maximum 25 MHz mandated in the spec.
o Enhancements:
- At the MMC layer, format various info from the CID into a string that
uniquely identifies the card instance (manufacturer number, serial
number, product name and revision, etc). Export it as an instance
variable.
- At the MMCSD layer, display the formatted card ID string, and also
report the clock speed of the hardware (not the card's max speed), and
the number of bits and number of blocks per transfer. It comes out like
this now:
mmcsd0: 968MB <SD SD01G 8.0 SN 276886905 MFG 08/2008 by 3 SD> at mmc0
22.5MHz/4bit/128-block
o Use DEVMETHOD_END.
o Use NULL instead of 0 for pointers.
marius [Sat, 26 May 2012 09:13:38 +0000 (09:13 +0000)]
MFC: r234561
Interrupts must be disabled while handling a partial cache line flush,
as otherwise the interrupt handling code may modify data in the non-DMA
part of the cache line while we have it stashed away in the temporary
stack buffer, then we end up restoring a stale value.
marius [Sat, 26 May 2012 08:54:44 +0000 (08:54 +0000)]
MFC: r234898, r235207
Add initial support for booting from ZFS on sparc64. At least on Sun Fire
V100, the firmware is known to be broken and not allowing to simultaneously
open disk devices, causing attempts to boot from a mirror or RAIDZ to cause
a crash. This will be worked around later. The firmwares of newer sun4u models
don't seem to exhibit this problem though.
thompsa [Sat, 26 May 2012 08:44:50 +0000 (08:44 +0000)]
MFC r234936 (emaste)
Relax restriction on direct tx to child ports
Lagg(4) restricts the type of packet that may be sent directly to a child
port, to avoid undesired output from accidental misconfiguration.
Previously only ETHERTYPE_PAE was permitted.
BPF writes to a lagg(4) child port are presumably intentional, so just
allow them, while still blocking other packets that should take the
aggregation path.
thompsa [Sat, 26 May 2012 08:25:41 +0000 (08:25 +0000)]
MFC r232321
Correct the description for CTLFLAG_TUN and CTLFLAG_RDTUN, the declaring of a
system tunable has never been implemented. This flag is only used by sysctl(8)
to provide a helpful error message.
thompsa [Sat, 26 May 2012 08:00:34 +0000 (08:00 +0000)]
MFC r234163
Set the proto to LAGG_PROTO_NONE before calling the detach routine so packets
are discarded, this is an issue because lacp drops the lock which may allow
network threads to access freed memory. Expand the lock coverage so the
detach/attach happen atomically.
thompsa [Sat, 26 May 2012 07:58:58 +0000 (07:58 +0000)]
MFC r232118
Only look for a usable MAC address for the bridge ID from ports within our
bridge, this allows us to have more than one independent bridge in the same
STP domain.
thompsa [Sat, 26 May 2012 07:58:12 +0000 (07:58 +0000)]
MFC r232014,r232030,r232070
- bstp_input() always consumes the packet so remove the mbuf handling dance
around it.
- Now that network interfaces advertise if they support linkstate notifications
we do not need to perform a media ioctl every 15 seconds.
- Indicate this function decrements the timer as well as testing for expiry.
rstone [Fri, 25 May 2012 23:24:16 +0000 (23:24 +0000)]
MFC r227342
The in-kernel CTF parser caches the result of its first attempt to parse
CTF data from a module. On subsequent attempts to retrieve CTF data for
a module, return an error if there no CTF data.
This fixes a panic if you try to enable fbt probes on a module without CTF
data twice.
Submitted by: Paul Ambrose (ambrosehua AT gmail DOT com)
marius [Fri, 25 May 2012 19:57:01 +0000 (19:57 +0000)]
MFC: r235681
Rewrite nd6_sysctl_{d,p}rlist() to avoid misaligned accesses to char arrays
casted to structs by getting rid of these buffers entirely. In r169832, it
was tried to paper over this issue by 32-bit aligning the buffers. Depending
on compiler optimizations that still was insufficient for 64-bit architectures
with strong alignment requirements though.
While at it, add comments regarding the total lack of locking in this area.
bschmidt [Fri, 25 May 2012 16:39:56 +0000 (16:39 +0000)]
MFC r232946,232958,235233:
r232946:
Update the rt2860's firmware and add a Makefile for the module. While
here remove the ucode header file which was used to generate the fw files
but by now is outdated.
r232958:
Import the latest microcode.h which was used to generate the current
firmware files and adjust the Makefile.
r235233:
Add support for Ralink RT2800/RT3000 chipsets.
projects / FreeBSD / stable / 8.git / log