on the previous generation of Pentium-M processors (Banias). Support for
Dothan and later processors involves working with acpi_perf(4) to extract
information about supported states. This driver should work on MP systems
including HTT. It is experimental and may have a few bugs but has been
tested to not crash at least.
Thanks to Colin Percival for his initial work on this driver.
only call the protocol's pru_rcvd() if the protocol has the flag
PR_WANTRCVD set. This brings that instance of pru_rcvd() into line with
the rest, which do check the flag.
MFC after: 3 days
very slow process, especially for large file systems that is just
recovered from a crash.
Since the summary is already re-sync'ed every 30 second, we will
not lag behind too much after a crash. With this consideration
in mind, it is more reasonable to transfer the responsibility to
background fsck, to reduce the delay after a crash.
Add a new sysctl variable, vfs.ffs.compute_summary_at_mount, to
control this behavior. When set to nonzero, we will get the
"old" behavior, that the summary is computed immediately at mount
time.
Add five new sysctl variables to adjust ndir, nbfree, nifree,
nffree and numclusters respectively. Teach fsck_ffs about these
API, however, intentionally not to check the existence, since
kernels without these sysctls must have recomputed the summary
and hence no adjustments are necessary.
This change has eliminated the usual tens of minutes of delay of
mounting large dirty volumes.
Reviewed by: mckusick
MFC After: 1 week
of the global UNIX domain socket mutex: no protection is needed that
early in the setup of the UNIX domain socket and socket structures.
MFC after: 3 days
preliminary support for using the GCC-compatibility of ICC was committed
but couldn't be tested at that time due to problems with ICC itself. Since
ICC 8.1 it's possible to use its GCC-compatibility under FreeBSD and it
turned out that a typedef for __gnuc_va_list is required in that case.
Revert the part of rev. 1.8 which #ifdef'ed out __gnuc_va_list for ICC.
MFC after: 1 week
patch from kan@).
Pull bufobj_invalbuf() out of vinvalbuf() and make g_vfs call it on
close. This is not yet a generally safe function, but for this very
specific use it is safe. This solves the problem with buffers not
being flushed by unmount or after failed mount attempts.
a packet has VLAN mbuf tag attached. This is faster to check than
m_tag_locate(), and allows us to use the tags in non-vlan(4) VLAN
producers.
The first argument to VLAN_OUTPUT_TAG() is now unused but retained
for backward compatibility.
While here, embellish a fix in rev. 1.174 of if_ethersubr.c -- it
now checks for packets with VLAN (mbuf) tags, and it should now
be possible to bridge(4) on vlan(4)'s whose parent interfaces
support VLAN decapsulation in hardware.
Reviewed by: sam
pointers in argv and envv in userland and use that together with
kern_execve() and exec_free_args() to implement freebsd32_execve()
without using the stackgap.
- Fix freebsd32_adjtime() to call adjtime() rather than utimes(). Still
uses stackgap for now.
- Use kern_setitimer(), kern_getitimer(), kern_select(), kern_utimes(),
kern_statfs(), kern_fstatfs(), kern_fhstatfs(), kern_stat(),
kern_fstat(), and kern_lstat().
Tested by: cokane (amd64)
Silence on: amd64, ia64
pointers in argv and envv in userland and use that together with
kern_execve() and exec_free_args() to implement linux_execve() for the
amd64/linux32 ABI without using the stackgap.
- Implement linux_nanosleep() using the recently added kern_nanosleep().
- Use linux_emul_convpath() instead of linux_emul_find() in
exec_linux_imgact_try().
Tested by: cokane
Silence on: amd64
the semantics in that the returned filename to use is now a kernel
pointer rather than a user space pointer. This required changing the
arguments to the CHECKALT*() macros some and changing the various system
calls that used pathnames to use the kern_foo() functions that can accept
kernel space filename pointers instead of calling the system call
directly.
- Use kern_open(), kern_stat(), kern_lstat(), kern_fstat(), kern_access(),
kern_truncate(), kern_pathconf(), kern_execve(), kern_select(),
kern_setitimer(), kern_getitimer(), kern_statfs(), and kern_fstatfs().
Silence on: alpha@
like a valid range. We already do this in the memory case (although
the code there is somewhat different than the I/o case because we have
to deal with different kinds of memory). Since most laptops don't
have non-subtractive bridges, this wasn't seen in practice.
Evidentally the Compaq R3000 hits this problem with PC Cards.
Some minor style fixes while I'm here.
Submitted by: Jung-uk Kim
mounted (is it Joliet, RockRidge, High Sierra) based on bootverbose.
Most file systems don't generate log messages based on details of the
file system superblock, and these log messages disrupt sysinstall output
during a new install from CD. We may want to explore exposing this
status information using nmount() at some point.
MFC after: 3 days
Note that this results in more kernel virtual memory being reserved for
temporary storage of the args. The args temporary space is allocated out
of exec_map (a submap of kernel_map). This will use roughly 4MB of KVM.
OK'ed by: dg
copy op to shift arguments on the stack instead of transfering each
argument one by one through a register. Probably doesn't affect overall
operation, but makes the code a little less grotty and easier to update
later if I choose to make the wrapper handle more args. Also add
comments.
so->so_options when solisten() will succeed, rather than setting it
conditionally based on there not being queued sockets in the completed
socket queue. Otherwise, if the protocol exposes new sockets via the
completed queue before solisten() completes, the listen() system call
will succeed, but the socket and protocol state will be out of sync.
For TCP, this didn't happen in practice, as the TCP code will panic if
a new connection comes in after the tcpcb has been transitioned to a
listening state but the socket doesn't have SO_ACCEPTCONN set.
This is historical behavior resulting from bitrot since 4.3BSD, in which
that line of code was associated with the conditional NULL'ing of the
connection queue pointers (one-time initialization to be performed
during the transition to a listening socket), which are now initialized
separately.
Discussed with: fenner, gnn
MFC after: 3 days
driver. This used to be handled by cpufreq_drv_settings() but it's
useful to get the type/flags separately from getting the settings.
(For example, you don't have to pass an array of cf_setting just to find
the driver type.)
Use this new method in our in-tree drivers to detect reliably if acpi_perf
is present and owns the hardware. This simplifies logic in drivers as well
as fixing a bug introduced in my last commit where too many drivers attached.
are equal to PCCARD_TPCE_FS_MEMSPACE_NONE, memspace will be zero, so
testing for this case inside of the if statement results in dead code.
We'd fail to set a value to zero that's already zero (since it is
initialized to 0 indirectly) with this code being there. Well, except
in the very rare case that we have a card that has a defualt entry
that includes a memory space followed by one that has no memory space
(these are extremely rare, I don't recall ever having seen one :-).
Fix this by setting num_memspace to 0 in a more appropriate place.
Submitted by: Coverity Prevent analysis tool
than the generic ne-2000 string. This should have no effect on the
actual support of the parts, just reporting what the part was.
Also, rename a few functins and symbols to reflect a more generic
part support that grew out of the early specific support.
soref() to also covering the update of so_state. While no other user
threads can update the socket state here as it's not yet hooked up to
the file descriptor array yet, the protocol could also frob the
socket state here, leading to a lost update to the so_state field.
No reported instances of this bug (as yet).
MFC after: 3 days
connection status before inserting the new socket into the listen
socket's accept queue, or there might be a race in which another thread
wakes up when the accept lock is released, and sees the socket before its
state is set correctly. The wakeup still occurs after the accept lock is
released. There have been no diagnoses of this bug in real-world systems
(as yet).
MFC after: 3 days
or just offering info. In the former case, we don't probe/attach to allow
the ACPI driver precedence. A refinement of this would be to actually
use the info provided by acpi_perf(4) to get the real CPU clock rates
instead of estimating them but since all systems that support both
acpi_perf(4) and ichss(4) export the control registers to acpi_perf(4),
it can just handle the registers on its own.
loaded, the tick interrupt enabled and a handler that resets the tick
counter on every tick interrupt. While this isn't documented this can
cause DELAY() to wait for a value the tick counter will not reach when
used in early boot, i.e. before cpu_initclocks() is called, depending
on when in the cycle DELAY() is called, the delay value and the value
the tick compare register is set to. The excessive use of DELAY() in
uart(4) when probing Sun keyboards seems to always manage to trigger
this, resulting in a hang during boot.
Disable the tick interrupt in tick_init(), which is called early in
sparc64_init(), until the interrupt is enabled again in tick_start(),
called by cpu_initclocks(), with our own handler. This fixes the hang
during probing Sun keyboards on AXi boards and Ultra 10, with other
machines like Ultra 5 probably being affected but not tested.
Additional testing by: Matthias Muthmann
MFC after: 1 week
aic7xxx.c:
Allow print_reg() to be called with a NULL column.
aic79xx.c:
Correct new usage of SCB_GET_TAG().
aic7xxx.c:
Fix stray ahd that snuck in here.
statement from some files, so re-add it for the moment, until the
related legalese is sorted out. This change affects:
sys/kern/kern_mbuf.c
sys/vm/memguard.c
sys/vm/memguard.h
sys/vm/uma.h
sys/vm/uma_core.c
sys/vm/uma_dbg.c
sys/vm/uma_dbg.h
sys/vm/uma_int.h
UMA_ZONE_REFCNT and UMA_ZONE_MALLOC zones, as the page(s) undoubtedly
came from kmem_map for those two. Previously it would set it back
to NULL for UMA_ZONE_REFCNT zones and although this was probably not
fatal, it added MORE code for no reason.
for now) exactly the same as KfAcquireSpinLock() and KfReleaseSpinLock().
I implemented the former as small routines in subr_ntoskrnl.c that just
turned around and invoked the latter. But I don't really need the wrapper
routines: I can just create an entries in the ntoskrnl func table that
map KeAcquireSpinLockRaiseToDpc() and KeReleaseSpinLock() to
KfAcquireSpinLock() and KfReleaseSpinLock() directly. This means
the stubs can go away.
close holes in detecting busfrees that occur after a packetized target
transitions to a non-packetized phase. The most common case where this
occurs is when a target is externally reset so the controller believes
a packetzied negotiation agreement is still in effect. Unfortunately,
disabling this feature seems to cause problems for the 7901B. Re-enable
ehanced busfree detection for this part until I can get my hands on a
samble to figure out if the old workaround is necessary and, if so, how
to make it work correctly.
This flag means "wait for all pending requests before returning to userland".
There are pending events for sure, because we just created new provider and
other classes want to taste it, but we cannot answer on I/O requests until
we're here.
Ville-Pertti Keinonen (will at exomi dot comohmygodnospampleasekthx)
deserves a big thanks for submitting initial patches to make it
work. I have mangled his contributions appropriately.
The main gotcha with Windows/x86-64 is that Microsoft uses a different
calling convention than everyone else. The standard ABI requires using
6 registers for argument passing, with other arguments on the stack.
Microsoft uses only 4 registers, and requires the caller to leave room
on the stack for the register arguments incase the callee needs to
spill them. Unlike x86, where Microsoft uses a mix of _cdecl, _stdcall
and _fastcall, all routines on Windows/x86-64 uses the same convention.
This unfortunately means that all the functions we export to the
driver require an intermediate translation wrapper. Similarly, we have
to wrap all calls back into the driver binary itself.
The original patches provided macros to wrap every single routine at
compile time, providing a secondary jump table with a customized
wrapper for each exported routine. I decided to use a different approach:
the call wrapper for each function is created from a template at
runtime, and the routine to jump to is patched into the wrapper as
it is created. The subr_pe module has been modified to patch in the
wrapped function instead of the original. (On x86, the wrapping
routine is a no-op.)
There are some minor API differences that had to be accounted for:
- KeAcquireSpinLock() is a real function on amd64, not a macro wrapper
around KfAcquireSpinLock()
- NdisFreeBuffer() is actually IoFreeMdl(). I had to change the whole
NDIS_BUFFER API a bit to accomodate this.
Bugs fixed along the way:
- IoAllocateMdl() always returned NULL
- kern_windrv.c:windrv_unload() wasn't releasing private driver object
extensions correctly (found thanks to memguard)
This has only been tested with the driver for the Broadcom 802.11g
chipset, which was the only Windows/x86-64 driver I could find.
reported to the sender - in the case where the sender sends data
outside the window (as WinXP does :().
Reported by: Sam Jensen <sam at wand dot net dot nz>
Submitted by: Mohan Srinivasan
an unused pageq queue reference in the page structure to stash a pointer
to the MemGuard FIFO. Using the page->object field caused problems
because when vm_map_protect() was called the second time to set
VM_PROT_DEFAULT back onto a set of pages in memguard_map, the protection
in the VM would be changed but the PMAP code would lazily not restore
the PG_RW bit on the underlying pages right away (see pmap_protect()).
So when a page fault finally occured and the VM noticed the faulting
address corresponds to a page that _does_ have write access now, it
would then call into PMAP to set back PG_RW (i386 case being discussed
here). However, before it got to do that, an assertion on the object
lock not being owned would get triggered, as the object of the faulting
page would need to be locked but was overloaded by MemGuard. This is
precisely why MemGuard cannot overload page->object.
Submitted by: Alan Cox (alc@)
the rate for the 100% state once. Afterwards, use that value for deriving
states. This should fix the problem where the calibrated frequency was
different once a switch was done, giving a different set of levels each
time. Also, properly search for the right cpufreqX device when detaching.
parent cpu device before passing it to pcpu_find(). Get the ivars from the
child, not parent cpu device. These bugs would cause a panic when
dereferencing the pcpu ivar, but weren't present in the acpi attachment
which it seems most people are using.
and into the bus front ends. For ISA and C-BUS cards, we always need
to grab it. For PC Card, already committed, we need to do some sanity
checking on the data that's in the ROMs before we decide that they are
OK to use. The PC Card code has already been committed and is
independent of this code (which also has to work on NE-1000 cards,
assuming that those cards still work :-).
with the latest changes. They actually have valid ROM data at location
0 of memory, just like a real NE-2000 ISA card. Use this data, if
the ROM passes a few basic tests, as an additional source for the MAC
address. Prefer the CIS over this source, but have it take precidence
over falling back to reading the attribtue memory.
o Minor cleanup of a few devices that we match on based on CIS string.
Remove the SACK "initburst" sysctl.
- Fix bugs in SACK dupack and partialack handling that can cause
large bursts while in SACK recovery.
Submitted by: Mohan Srinivasan
override the current freq level temporarily and restore it when the
higher priority condition is past. Note that only the first overridden
value is saved. Callers pass NULL to CPUFREQ_SET to restore the saved
level. Priorities are not yet used so this commit should have no effect.
- refactor ngd_constructor, so that make_dev() is called without
any locks held, since it mallocs memory with M_WAITOK flag.
- rename global mtx, to have name different to per-node mtx
MFC after: 2 weeks
removes netgraph node and unwraps Ethernet interface.
This gives us ability to unload ng_ether.ko, when all interfaces
are detached, making ng_ether(4) developers happy.
Reviewed by: ru
driver did VLAN decapsulation in hardware, we were passing a frame
as if it came for the parent (non-VLAN) interface. Stop this from
happening.
Reminded by: glebius
Security: This could pose a security risk in some setups
o Use SYSCTL_IN() macro instead of direct call of copyin(9).
Submitted by: ume
o Move sysctl_drop() implementation to sys/netinet/tcp_subr.c where
most of tcp sysctls live.
o There are net.inet[6].tcp[6].getcred sysctls already, no needs in
a separate struct tcp_ident_mapping.
Suggested by: ume
bridge between OLDCARD and NEWCARD for drivers to inquire after the
function number (eg, 0, 1, 2). Nobody ever used it, so retire it
with honors. NEWCARD never implemented it, and the same information
can be obtained by the pccard_get_function_number().
MFC After: 3 days
proper way, or at least the same way that NetBSD and Linux do things
(I've been unable to obtain datasheets for these parts to know for
sure). This has some marginal improvement in the DL10022 and DL10019
cards that I have. Also, report which type, exactly.
# There's one or two ed cards that I have which still don't work, but I think
# that's due to MII losage on the card that's not presently compensated
# for in the MII drivers.
tree since 2003/02/20, and I recently cleaned it up. I'd even closed
the PR that I obtained this from Fri Jul 18 23:25:08 MDT 2003 since
I looked at my p4 tree.
PR: 46889
Submitted by: HASEGAWA Tomoki
memory disk is larger than the number of available sf_bufs, this improves
performance on SMPs by eliminating interprocessor TLB shootdowns. For
example, with 6656 sf_bufs, the default on my test machine, and a 256MB
swap-backed memory disk, I see the command
"dd if=/dev/md0 of=/dev/null bs=64k" achieve ~489MB/sec with the default,
shared mappings, and ~587MB/sec with CPU private mappings.
base transfer speed to CAM. The actual value used (40MB/s) is fairly
arbitrary, but assumes the same 33% overhead as was implied by the
1MB/s figure we used for USB1 devices.
are not added to the list(s) of available settings. However, other drivers
can call the CPUFREQ_DRV_SETTINGS() method on those devices directly to
get info about available settings.
Update the acpi_perf(4) driver to use this flag in the presence of
"functional fixed hardware." Thus, future drivers like Powernow can
query acpi_perf for platform info but perform frequency transitions
themselves.
on dev.cpu.0 will affect all of the CPUs together. In the future,
independent control will be supported but this is good enough for now.
Check that the timecounter isn't TSC before switching (from Colin Percival.)
former is callable from user space and the latter from the kernel one. Make
kernel version take additional argument which tells if the respective call
should check for additional restrictions for sending signals to suid/sugid
applications or not.
Make all emulation layers using non-checked version, since signal numbers in
emulation layers can have different meaning that in native mode and such
protection can cause misbehaviour.
As a result remove LIBTHR from the signals allowed to be delivered to a
suid/sugid application.
Requested (sorta) by: rwatson
MFC after: 2 weeks
throttling, neglecting to do this kept the sysctls from appearing.
Attach an acpi_throttle device to each CPU that supports it.
Don't add a device if the P_BLK is invalid or if _PTC is not present.
This removes extraneous probe/attach failure messages on some machines.
Make the cpu throttle state local to the softc to account for partial
successes when changing the clock rate on MP machines.
for nodes hanging off of Central (untested), FireHose (untested) and
PCI (tested) busses.
- Add an additional parameter to OF_decode_addr() which specifies the
index of the register bank to decode.
These should allow to eventually add support for the Z8530 hanging off of
FireHose to uart(4) and to write support for PCI-based graphics adapters.
Suggested by: tmm (back in '03)
which will finally lead to kernel panic.
Security: This prevents a local (root-launched) DoS
Submitted by: Wojciech A. Koszek [dunstan at freebsd czest pl]
PR: 77421
MFC After: 1 week
o Add a fallback location for the MAC address. Most of the early ne2000
PC Cards were built from the same parts, so most of them have the same
address in the CIS to grab the MAC from. Use this address as our
fallback if we don't find anything better.
o Add printf, in bootverbose, noting the MAC addresses that we find along
the way.
# Better sanity checking of the MAC address is needed. Will have to
# investigate using/creating a centralized function to do this as a number
# of other PC Card drivers each have their own ad-hoc tests.
a definite setup was broken: two ng_ksockets are connected to each other,
connect()ed to different remote hosts, and bind()ed to different local
interfaces. In this case one ng_ksocket is fooled with tag from the other
one.
Put node id into tag. In rcvdata method utilize tag only if it has our
own id inside or id equals zero. The latter case is added to support
packets send by some third, not ng_ksocket node.
MFC after: 1 week
1. Dependency on netgraph module was broken (wrong version).
2. Netgraph node type was never destroyed on unload. This
was masked by problem #1.
Fixed both by using NETGRAPH_INIT(). Now netgraph node type
is created on module load, as in the rest of netgraph modules.
This information will be very useful for people who are tuning applications
which have a dependence on IPC mechanisms.
The following OIDs were documented:
Message queues:
kern.ipc.msgmax
kern.ipc.msgmni
kern.ipc.msgmnb
kern.ipc.msgtlq
kern.ipc.msgssz
kern.ipc.msgseg
Semaphores:
kern.ipc.semmap
kern.ipc.semmni
kern.ipc.semmns
kern.ipc.semmnu
kern.ipc.semmsl
kern.ipc.semopm
kern.ipc.semume
kern.ipc.semusz
kern.ipc.semvmx
kern.ipc.semaem
Shared memory:
kern.ipc.shmmax
kern.ipc.shmmin
kern.ipc.shmmni
kern.ipc.shmseg
kern.ipc.shmall
kern.ipc.shm_use_phys
kern.ipc.shm_allow_removed
kern.ipc.shmsegs
These new descriptions can be viewed using sysctl -d
PR: kern/65219
Submitted by: Dan Nelson <dnelson at allantgroup dot com> (modified)
No objections: developers@
Descriptions reviewed by: gnn
MFC after: 1 week
at some offset. Unlike newer cards, the MAC address wasn't part of
the CIS as a specific FUNCE. These older cards were having their MAC
address show up as 0:2:4:6:8:a because that's what's in the ROM
locations that would be there in a real ne2000.
This patch allows one to specify the offset for the MAC address for
these cards. Specify one for the IBM Ethernet II card, as it is one
that has this problem. One shouldn't specify this unless the MAC
address really isn't in the CIS at all.
Side note: The novell probe likely shouldn't read the MAC address, and
that should be moved to the bus specific attach routine(s), maybe as a
convenience function in if_ed_novell.c.
My IBM Ethernet II (aka Info Mover) now has a believable MAC address.
with net byte order. Change byte order to net in ng_ipfw_input(), change
byte order to host before ip_output(), do not change before ip_input().
In collaboration with: ru
suid application. The problem is that Linux applications using old Linux
threads (pre-NPTL) use signal 32 (linux SIGRTMIN) for communication between
thread-processes. If such an linux application is installed suid or sgid
and security.bsd.conservative_signals=1 (default), then permission will be
denied to send such a signal and the application will freeze.
I believe the same will be true for native applications that use libthr,
since libthr uses SIGTHR for implementing conditional variables.
PR: 72922
Submitted by: Andriy Gapon <avg@icyb.net.ua>
MFC after: 2 weeks
are NOVELL NE2000 with just a tiny quirk that's non vendor specific.
Instead, use the chip_type of DL100XX instead. This is more inline
with how the AX88190 support was added, and seems a little cleaner.
can retransmit on TX underrun and set TOK in addition to TUND. Also add a
check to prevent overflow of the addressable threshold.
This fixes some reports of rl(4) slowness, believed to be related to ALTQ
before.
PR: kern/61448
Submitted by: Tim Draegen-Gilman <timNOeudaemonSPAMnet> (with changes)
MFC after: 1 week
list, set `curr_callout' to NULL. This ensures that we won't attempt
to cancel the current callout if the original callout structure
gets recycled while we wait to acquire Giant.
This is reported to fix an intermittent syscons problem that was
introduced by revision 1.96.
