This removes the packet header in certain cases which later on
will give panic. Clarify what the atm_intr expects in the comment
and de-obscurify the code a little bit by replacing the portability
macros with the BSD names. The code isn't maintained externally anymore
so there's no point in keeping the extra level of obscurity.
- allow for ifp->if_ioctl being NULL, as the rest of ifioctl() does;
- give the interface driver a chance to report a error to the caller;
- don't forget to update ifp->if_lastchange upon successful modification
of interface operation parameters.
layering violation. As pointed out, there is much better way to do this.
Sorry guys, I need to find a better way to force reviews.
Requested by: harti, julian, scottl (mentor)
Pointy hat to: pjd
Instead of creating a mutex that we msleep on but don't actually lock when
doing the corresponding wakeup(), in the kthread, lock the mutex associated
with our taskqueue and msleep while the queue is empty. Assert that the
queue is locked when the callback function is called to wake the kthread.
return events on the fixed handler even after defining a duplicate in the
AML. While this violates the spec, hopefully we can get by with leaving
both installed.
It works as follows:
In every 'interval' seconds defined links are checked.
If they are non-active they will not be used by to data transfer.
No response from: julian, archie
Silent on: net@
Approved by: scottl (mentor)
mode is applied, since tunneled packets are considered to be
generated packets from a tunnel encapsulating node.
- tunnel mode may not be applied if SA mode is ANY and policy
does not say "tunnel it". check if we have extra IPv6 header
on the packet after ipsec6_output_tunnel() and call ip6_output()
only if additional IPv6 header is added.
- free the copyed packet before returning.
Obtained from: KAME
It returns 1 is process is inside of jail and 0 if it is not.
Information if we are in jail or not is not a secret, there is plenty of
ways to discover it. Many people are using own hack to check this and
this will be a legal way from now on.
It will be great if our starting scripts will take advantage of this sysctl
to allow clean "boot" inside jail.
Approved by: rwatson, scottl (mentor)
to size_t *, which is incorrect because they may have different widths.
This caused some subtle forms of corruption, the mostly frequently
reported one being that the last character of a filename was sometimes
duplicated on amd64.
stopped returning events. Don't disable the event when removing
the handler because it still needs to be enabled for the other
handler. Also, remove duplicate AcpiEnableEvent calls since the
install function now does this for us.
into its own file:
- All of the $PIR interrupt routing is now done in a link-centric fashion.
When a host-PCI bridge that uses the $PIR attaches, it calls pir_parse()
to parse the table. This scans for link devices and merges all the masks
for each link device from the table entries. It then looks at the intline
register of PCI devices connected to a link to figure out if the BIOS has
routed this link and if so to which IRQ.
- The IRQ for any given link can be overridden via a hint like so:
'hw.pci.link.0x62.irq=10' Any IRQ set in this matter is treated as if it
were set that way by the BIOS.
- We only call the BIOS to route each link device once.
- When a PCI device wants to route an interrupt, we look it up in the $PIR
to find the associated link. If the link is routed, we simply return the
IRQ it is using. If it is not routed, we have to pick one. This uses a
different algorithm from the old code. First off, when we try to pick
an interrupt from a mask of possible interrupts, we try to pick the one
that is least loaded as far as PCI devices. We maintain this weight based
on the number of devices attached to each link device. When choosing an
IRQ, we first attempt to route using any PCI only interrupts (the old
code did this as well). If that doesn't work, we try to use the list of
IRQs that the BIOS has used. This is a new step that the new code didn't
do and avoids using IRQ 3 or 4 for every virgin interrupt routing. If
none of the IRQs that the BIOS used worked, then we fall back to trying
anything.
- The fallback mask for !PC98 was fixed to include IRQ 3 and not allow IRQ
2.
- We don't use the $PIR to route interrupts on a PCI-PCI bridge unless it
has already been used to route on at least one Host-PCI bridge. This
helps to avoid mixing and matching x86 firmware PCI interrupt routing
methods (which is a Bad Thing(tm)).
Silence on: current@
Previously the "struct disk" were owned by the device driver and this
gave us problems when the device disappared and the users of that device
were not immediately disappearing.
Now the struct disk is allocate with a new call, disk_alloc() and owned
by geom_disk and just abandonned by the device driver when disk_create()
is called.
Unfortunately, this results in a ton of "s/\./->/" changes to device
drivers.
Since I'm doing the sweep anyway, a couple of other API improvements
have been carried out at the same time:
The Giant awareness flag has been flipped from DISKFLAG_NOGIANT to
DISKFLAG_NEEDSGIANT
A version number have been added to disk_create() so that we can detect,
report and ignore binary drivers with old ABI in the future.
Manual page update to follow shortly.
support is partial in that it will refuse to create large files on
filesystems that haven't been upgraded to EXT2_DYN_REV or that don't
have the EXT2_FEATURE_RO_COMPAT_LARGE_FILE flag set in the superblock.
MFC after: 2 weeks
kernel. I'm not happy with it yet - refinements are to come.
This hack allows the kern.ps_strings and kern.usrstack sysctls to respond
to a 32 bit request, such as those coming from emulated i386 binaries.
value for MSGBUF_SIZE is configured. MSGBUF_SIZE =
(32768 * bootverbose ? 2 : 1) is always 1 or 2, so there is not enough space
in the buffer for metadata, and blindly using the nonexistent space tends
to cause fatal pagefaults. I think
MSGBUF_SIZE = (32768 * (bootverbose ? 2 : 1)) would be always 32768 since
bootverbose is only statically initialized to 0 early when MSGBUF_SIZE is
used. MSGBUF_SIZE = (32768 * ((boothowto & RB_VERBOSE) ? 2 : 1)) should
work, but this belongs in <sys/msgbuf.h> even less than previous versions.
MSGBUF_SIZE shouldn't be a macro.
it means that the correct value is unknown. Since this value is just
a hint to improve performance, initially assume that the first non-reserved
cluster is free, then correct this assumption if necessary before writing
the FSInfo block back to disk.
PR: 62826
MFC after: 2 weeks
result in a panic "vm_page_cache: caching a dirty page, ...": Access to the
page must be restricted or removed before calling vm_page_cache(). This
race condition is identical in nature to that which was addressed by
vm_pageout.c's revision 1.251 and vm_page.c's revision 1.275.
MFC after: 7 days
- When adding new waiting threads to the waitlist for an object,
use INSERT_LIST_TAIL() instead of INSERT_LIST_HEAD() so that new
waiters go at the end of the list instead of the beginning. When we
wake up a synchronization object, only the first waiter is awakened,
and this needs to be the first thread that actually waited on the object.
- Correct missing semicolon in INSERT_LIST_TAIL() macro.
- Implement lookaside lists correctly. Note that the Am1771 driver
uses lookaside lists to manage shared memory (i.e. DMAable) buffers
by specifying its own alloc and free routines. The Microsoft documentation
says you should avoid doing this, but apparently this did not deter
the developers at AMD from doing it anyway.
With these changes (which are the result of two straight days of almost
non-stop debugging), I think I finally have the object/thread handling
semantics implemented correctly. The Am1771 driver no longer crashes
unexpectedly during association or bringing the interface up.
resources. (Note that the correct range is 0x3f7,0x3f0-0x3f5.) Such
devices will be detected as follows:
fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> port
0x3f7,0x3f4-0x3f5,0x3f2-0x3f3,0x3f0-0x3f1 irq 6 drq 2 on acpi0
To do this, we find the minimum and maximum start addresses for the
resources and use them as the base for the IO and control ports.
Help from: jhb
missing parentheses). Use default handling (trap to debugger) for
udev2dev(x, 1) since it is an error and doesn't happen anywhere in
the sys tree except in bogusly commented out code in coda.
and given a value, but never used. This has no effect on the
resulting binaries, since gcc optimizes the variable away anyway.
PR: kern/62684
Approved by: rwatson (mentor)
panic "vm_page_cache: caching a dirty page, ...": Access to the page must
be restricted or removed before calling vm_page_cache(). This race
condition is identical in nature to that which was addressed by
vm_pageout.c's revision 1.251 and vm_page.c's revision 1.275.
Reviewed by: tegge
MFC after: 7 days
The Am1771 driver will sometimes do the following:
- Some thread-> NdisScheduleWorkItem(some work)
- Worker thread -> do some work, KeWaitForSingleObject(some event)
- Some other thread -> NdisScheduleWorkItem(some other work)
When the second call to NdisScheduleWorkItem() occurs, the NDIS worker
thread (in our case ndis taskqueue) is suspended in KeWaitForSingleObject()
and waiting for an event to be signaled. This is different from when
the worker thread is idle and waiting on NdisScheduleWorkItem() to
send it more jobs. However, the ndis_sched() function in kern_ndis.c
always calls kthread_resume() when queueing a new job. Normally this
would be ok, but here this causes KeWaitForSingleObject() to return
prematurely, which is not what we want.
To fix this, the NDIS threads created by kern_ndis.c maintain a state
variable to indicate whether they are running (scanning the job list
and executing jobs) or sleeping (blocked on kthread_suspend() in
ndis_runq()), and ndis_sched() will only call kthread_resume() if
the thread is in the sleeping state.
Note that we can't just check to see if the thread is on the run queue:
in both cases, the thread is sleeping, but it's sleeping for different
reasons.
This stops the Am1771 driver from emitting various "NDIS ERROR" messages
and fixes some cases where it crashes.
data for the file system on which the jail's root vnode is located.
Previous behavior (show data for all mountpoints) can be restored
by setting security.jail.getfsstatroot_only to 0. Note: this also
has the effect of hiding other mounts inside a jail, such as /dev,
/tmp, and /proc, but errs on the side of leaking less information.
called until DEVFS had a chance to initialize. Since DEVFS is mandatory
and things over in that department coincidentally works from without
any initialization now, this is safe.
could result in a panic "vm_page_cache: caching a dirty page, ...":
Access to the page must be restricted or removed before calling
vm_page_cache(). This race condition is identical in nature to that
which was addressed by vm_pageout.c's revision 1.251.
- Simplify the code surrounding the fix to this same race condition
in vm_pageout.c's revision 1.251. There should be no behavioral
change. Reviewed by: tegge
MFC after: 7 days
- don't unlock the vnode after vinvalbuf() only to have to relock it
almost immediately.
- don't refer to devices classified by vn_isdisk() as block devices.
is reserved by the loader, and thus any tunable name with that suffix will
be silently discarded.
Document this in the header and man page so that other developers do not
develop so many bumps on the head after banging it against the wall.
Detective work by: Mark Santcroos, grehan
the vnode around calls to vinvalbuf()). Apparently no one has tested
ext2fs with DEBUG_VOP_LOCKS. Vnode locking for vinvalbuf() might not
be required in non-soft-updates cases, but it is now asserted.
MFffs (uncommitted related and nearby cleanups: don't unlock the vnode
after vinvalbuf() only to have to relock it almost immediately; don't
refer to devices classified by vn_isdisk() as block devices).
them mostly with packet tags (one case is handled by using an mbuf flag
since the linkage between "caller" and "callee" is direct and there's no
need to incur the overhead of a packet tag).
This is (mostly) work from: sam
Silence from: -arch
Approved by: bms(mentor), sam, rwatson
ISA. npx has few isa dependencies, but it does unconditional outb()'s to
the isa bus in the !SMP case, and it attaches to isa if "device isa" is
configured in order to support PNP-ISA. The ifdef for the latter was
misplaced.
PR: 62595
dishonored in rev.1.1 by commenting out the code that honored it. This
gave the worst disadvantages of async mounts in an uncontrollable way.
Honoring the flag costs about 50% in real time in worst cases on a new
but not very fast ATA drive with write caching (probably more on drives
without write caching). The old misbehavior can be recovered using
async mounts after implementing them in mount_ext2fs(8) (just put the
MNT_ASYNC flag in mount_ext2fs's table of supported options like it
is in mount's table).
- rejects IPv6 packet toward IPv4-mapped address if its source address
is not an IPv4-mapped IPv6 address, since the converted IPv4 packets
would have an unexpected IPv4 source address.
- when V6ONLY socket option is set, discard packets destined to a
v4/ipv4 mapped ipv6 address.
- have PULLDOWN_TEST codepath.
- get rid of in6_mcmatch().
Obtained from: KAME
to one, DEBUG_FLAGS, which is also compatible with <bsd.prog.mk>.
Previously one had to set both DEBUG and DEBUG_FLAGS to build the
.ko.debug with debugging symbols which was boring when doing this
manually.
versions of the modules, and unconditionally putting -g in CFLAGS
has negative impact on the size of the resulting .ko object, even
now that debugging symbols are always stripped.
shown that it is not useful.
Rename the relative count g_access_rel() function to g_access(), only
the name has changed.
Change all g_access_rel() calls in our CVS tree to call g_access() instead.
Add an #ifndef BURN_BRIDGES #define of g_access_rel() for source
code compatibility.
operators) in and near revs.1.169-1.170 (open mode bandaid). This
(or better a proper fix) should have been done before cloning the
bandaid to many other file systems.
set to SIGCHLD. This avoids the creation of orphaned Linux-threaded
zombies that init is unable to reap. This can occur when the parent
process sets its SIGCHLD to SIG_IGN. Fix a similar situation in the
PT_DETACH code.
Tested by: "Steven Hartland" <killing AT multiplay.co.uk>
- rev.1.42 of ffs_readwrite.c added a special case in ffs_read() for reads
that are initially at EOF, and rev.1.62 of ufs_readwrite.c fixed
timestamp bugs in it. Removal of most of vfs_ioopt made it just and
optimization, and removal of the vm object reference calls made it less
than an optimization. It was cloned in rev.1.94 of ufs_readwrite.c as
part of cloning ffs_extwrite() although it was always less than an
optimization in ffs_extwrite().
- some comments, compound statements and vertical whitespace were vestiges
of dead code.
- culled long-dead #define's
- segment register defs moved to sr.h
- NPMAPS moved to pmap.h
- KERNBASE moved to vmparam.h
- removed include of <machine/cpu.h> and fixed src files that
relied on this.
Modifying segment register code no longer causes gcc rebuilds :-)
This is the first of two commits; bringing in the kernel support first.
This can be enabled by compiling a kernel with options TCP_SIGNATURE
and FAST_IPSEC.
For the uninitiated, this is a TCP option which provides for a means of
authenticating TCP sessions which came into being before IPSEC. It is
still relevant today, however, as it is used by many commercial router
vendors, particularly with BGP, and as such has become a requirement for
interconnect at many major Internet points of presence.
Several parts of the TCP and IP headers, including the segment payload,
are digested with MD5, including a shared secret. The PF_KEY interface
is used to manage the secrets using security associations in the SADB.
There is a limitation here in that as there is no way to map a TCP flow
per-port back to an SPI without polluting tcpcb or using the SPD; the
code to do the latter is unstable at this time. Therefore this code only
supports per-host keying granularity.
Whilst FAST_IPSEC is mutually exclusive with KAME IPSEC (and thus IPv6),
TCP_SIGNATURE applies only to IPv4. For the vast majority of prospective
users of this feature, this will not pose any problem.
This implementation is output-only; that is, the option is honoured when
responding to a host initiating a TCP session, but no effort is made
[yet] to authenticate inbound traffic. This is, however, sufficient to
interwork with Cisco equipment.
Tested with a Cisco 2501 running IOS 12.0(27), and Quagga 0.96.4 with
local patches. Patches for tcpdump to validate TCP-MD5 sessions are also
available from me upon request.
Sponsored by: sentex.net
systems define power/sleep buttons in both places but only deliver
notifies to the ones defined in the AML.
Also, reduce length of various function handler names.
PR:
Submitted by:
Reviewed by:
Approved by:
Obtained from:
MFC after:
pci-hi/med/lo + node 'interrupts' property. This worked by
accident until recent notebooks required correct operation.
Tested by: Suleiman Souhlal <refugee@segfaulted.com>
routines to do anything except return error if the miniport adapter context
is not set (meaning we either having init'ed the driver yet, or the
initialization failed).
Also, be sure to NULL out the adapter context along with the
miniport characteristics pointers if calling the MiniportInitialize()
method fails.
the added comment for low-level details.) The effect of this race
condition is a panic "vm_page_cache: caching a dirty page, ..."
Reviewed by: tegge
MFC after: 7 days
created with the same name, and vice versa:
- Immediately recycle vnodes of files & directories that have been deleted
or renamed.
- When looking an entry in the VFS name cache or smbfs's private
cache, make sure the vnode type is consistent with the type of file
the server thinks it is, and re-create the vnode if it isn't.
The alternative to this is to recycle vnodes unconditionally when their
use count drops to 0, but this would make all the caching we do
mostly useless.
PR: 62342
MFC after: 2 weeks
- Factor out common settings and put them in an upper level Makefile.inc.
- Properly use PROG for real programs, not their products.
- Further reduce diffs to i386 versions.
Tested on: sparc64 (panther)
- Now that bsd.prog.mk deals with programs linked with -nostdlib
better, and has a notion of an "internal" program, use PROG
where possible. This has a good impact on the contents of
.depend files and causes programs to be linked with cc(1).
XXX: boot2 couldn't be converted as it's actually two programs.
Tested on: i386, amd64
the "disappearing subdisks" problem when new subdisks can't be created
due to some errors.
This is in fact an ugly hack, but a more elegant solution would probably
require a redesign of vinum in several places.
Approved by: joerg (mentor)
mindful of blocking on disk I/O and instead return EBUSY when such
blocking would occur.
Results from the DeBox project indicate that blocking on disk I/O
can slow the performance of a kqueue/poll based webserver. Using
a flag such as SF_NODISKIO and throwing connections that would block
to helper processes/threads helped increase performance.
Currently, only the Flash webserver uses this flag, although it could
probably be applied to thttpd with relative ease.
Idea by: Yaoping Ruan & Vivek Pai
nodes, or if they did, they're now locked away on the Kurt Gdel
memorial home for the numerically confused:
Don't cast a kernel pointer (from makedev(9)) to an integer (maj+minor combo).
on the card, unmap it first. This allows it to be picked up properly when
the queue gets kicked again. This was the root problem for the lost command
(i.e. stuck in getblk/vinvalb) problem. While here, panic if commands don't
map correctly instead of just silently ignoring the problem and dropping
command. Also slow down the dynamic allocation of new commands.
It should be safe to go back into the aac waters. Thanks to everyone who
suffered through this and provided good feedback.
802.11b chipset work. This chip is present on the SMC2602W version 3
NIC, which is what was used for testing. This driver creates kernel
threads (12 of them!) for various purposes, and required the following
routines:
PsCreateSystemThread()
PsTerminateSystemThread()
KeInitializeEvent()
KeSetEvent()
KeResetEvent()
KeInitializeMutex()
KeReleaseMutex()
KeWaitForSingleObject()
KeWaitForMultipleObjects()
IoGetDeviceProperty()
and several more. Also, this driver abuses the fact that NDIS events
and timers are actually Windows events and timers, and uses NDIS events
with KeWaitForSingleObject(). The NDIS event routines have been rewritten
to interface with the ntoskrnl module. Many routines with incorrect
prototypes have been cleaned up.
Also, this driver puts jobs on the NDIS taskqueue (via NdisScheduleWorkItem())
which block on events, and this interferes with the operation of
NdisMAllocateSharedMemoryAsync(), which was also being put on the
NDIS taskqueue. To avoid the deadlock, NdisMAllocateSharedMemoryAsync()
is now performed in the NDIS SWI thread instead.
There's still room for some cleanups here, and I really should implement
KeInitializeTimer() and friends.
seems to work well in RELENG_4. However, 5.X locking foo means that I'll
have to do some quick redesign.
Add ioctl handlers for ISP_GETROLE and ISP_SETROLE ioctls.
handling of resources shortages. The driver is now so fast that it can
completely fill all 512 slots on the card, but for some reason only 511
slots are being allocated. Anything that tries to go into the 512th
slot gets silently lost. Both bugs need to be fixed at a later date,
but this should fix the reports of hangs in getblk and vinvalb.
edge cases in the loop.
- Try to grab a command before dequeueing the bio from the bioq. The old
behaviour of requeuing deferred bios to the end of the bioq is arguably
wrong. This should be fixed in the future to check the bioq head without
automatically dequeueing the bio.
- do not use PROG for what's not a real C program,
- use sys.mk transformation rules where possible,
- only create the "machine" symlink on AMD64,
- removed MAINTAINER lines in individual makefiles,
- added the LIBSTAND defitinion to <bsd.libnames.mk>,
- somewhat better contents in .depend files.
Tested on: i386, amd64
Prodded by: bde
to catch are already nicely caught by trapping the null pointer derefs.
Remove no-longer-used noswitch/nothrow strings. They were referenced
by the stub cpu_switch() etc functions before they were implemented.
Try something a little different for the lock prefixes.
Prompted by: bde (the first two items anyway)
