NetBSD, ported to FreeBSD by Pierre Beyssac <pb@fasterix.freenix.org> and
minorly tweaked by me.
This is a standard part of FreeBSD, but must be enabled with:
"sysctl -w net.inet.ip.fastforwarding=1" ...and of course forwarding must
also be enabled. This should probably be modified to use the zone
allocator for speed and space efficiency. The current algorithm also
appears to lose if the number of active paths exceeds IPFLOW_MAX (256),
in which case it wastes lots of time trying to figure out which cache
entry to drop.
We had run out of bits in the nfs mount flags, I have moved the internal
state flags into a seperate variable. These are no longer visible via
statfs(), but I don't know of anything that looks at them.
Submitted by: Roger Hardiman <roger@cs.strath.ac.uk>
options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
in the kernel config file makes the driver's video_open() function
select PAL rather than NTSC. This fixed all the hangs on my
Dual Crystal card when using a PAL video signal.
As a result, you can loose the tsleep (of 2 seconds - now 0.25!!)
which I previously added. (Unless someone else wanted the 0.25
second tsleep).
available. The per-cpu variable ss_tpr has been replaced by ss_eflags.
This reduced the number of interrupts sent to the wrong CPU, due to
the cpu having the global lock being inside a critical region.
Remove some unneeded manipulation of tpr register in mplock.s.
Adjust code in mplock.s to be aware of variables on the stack being
destroyed by MPgetlock if GRAB_LOPRIO is defined.
update of cpu usage as shown by top when one process is cpu bound
(no system calls) while the system is otherwise idle (except for top).
Don't attempt to switch to the BSP in boot(). If the system was idle when
an interrupt caused a panic, this won't work. Instead, switch to the BSP
in cpu_reset.
Remove some spurious forward_statclock/forward_hardclock warnings.
Don't forget to clear the inode hash lock before returning from ext2_vget()
after getnewvnode() fails. Obtained from: rev.1.24 of ffs_vfsops.c (the
original patch for the getnewvnode() race). Forgotten in: rev.1.4 here.
Removed a duplicate comment. Duplicated in: rev.1.4 here.
Fixed the MALLOC() vs getnewvnode() race in ext2_vget(). Obtained from:
rev.1.39 of ffs_vfsops.c.
Windows 95 after rebooting FreeBSD without power off. In PC-98
system, reboot mode is set via I/O port 0x37 in cpu_reset(), and
accessing of this port is the reason of the problem. To avnoid the
fault, current status of reboot mode should be checked before
accessing the I/O port.
that local APIC should be disabled in UP system. However, some of old
BIOS does not disable local APIC, and virtual wire mode through local
APIC may cause int 15.
submitted ioctl to clear the video buffer
prior to starting video capture
Amancio : clean up yuv12 so that it does not
affect rgb capture. Basically, fxtv after
capturing in yuv12 mode , switching to rgb
would cause the video capture to be too bright.
1.32 disable inverse gamma function for rgb and yuv
capture. fixed meteor brightness ioctl it now
converts the brightness value from unsigned to
signed.
1.33 added sysctl: hw.bt848.tuner, hw.bt848.reverse_mute,
hw.bt848.card
card takes a value from 0 to bt848_max_card
tuner takes a value from 0 to bt848_max_tuner
reverse_mute : 0 no effect, 1 reverse tuner
mute function some tuners are wired reversed :(
Define a parameter which indicates the maximum number of sockets in a
system, and use this to size the zone allocators used for sockets and
for certain PCBs.
Convert PF_LOCAL PCB structures to be type-stable and add a version number.
Define an external format for infomation about socket structures and use
it in several places.
Define a mechanism to get all PF_LOCAL and PF_INET PCB lists through
sysctl(3) without blocking network interrupts for an unreasonable
length of time. This probably still has some bugs and/or race
conditions, but it seems to work well enough on my machines.
It is now possible for `netstat' to get almost all of its information
via the sysctl(3) interface rather than reading kmem (changes to follow).
signanosleep() did not deal with signal masks properly. This change was
based on a discussion with bde some time ago (at least 6 months or more).
signanosleep() should probably go away since it was never really used for
more than a few weeks and doesn't appear in released code. It should
probably be killed before somebody uses it and it becomes a gratuitous
nonstandard feature.
but doesn't do much of anything with it. I added it to siopnp_ids[]
and it was found and recognized as a serial port.
PR: 6605
Reviewed by: phk
Submitted by: Dave Marquardt <marquard@zilker.net>
these two files that are almost-but-not-quite the same leads to false grep
hits, confusion etc.
Only installing one copy with a symlink would be nice but that doesn't
work with SHARED=symlinks (it changes the source tree).
in nfs_vinvalbuf() or the nfs_removeit(), we can have the nfsnode reallocated
from underneath us (eg: replaced by a ufs 'struct inode') which can cause
disk corruption ('freeing free block' when di_db[5] gets trashed).
This is not a cheap fix, but it'll do until the nfsnodes get reference
counting and/or locking.
Apparently NetBSD have a similar fix (apparently from BSDI).
I wish all PR's had this much useful detail. :-)
PR: 6611
Submitted by: Stephen Clawson <sclawson@marker.cs.utah.edu>
This is a result of discussions on the mailing lists. Kudos to those who
have found the issue and created work-arounds. I have chosen Tor's fix
for now, before we can all work the issue more completely.
Submitted by: Tor Egge
possibly non-open devices, and we don't want to restrict dumping
to swap devices anwyay. It is especially invalid to call d_ioctl()
in non-process context for panics. d_psize() can be called on
non-open devices, at least on non-SLICED ones that support d_dump(),
and setdumpdev() has depended on this for a long time although it
is probably wrong, but even d_psize() can't be called in non-process
context - that's why dumpsys() depends on previously computed values
although these values may be stale. The historical restriction to
devices with dkpart(dev) == SWAP_PART should go away.
the only common usage of utrace (the possible problem with this
commit) is with malloc, so this should be a real problem. Add
the various NetBSD syscalls that allow full emulation of their
development environment.
language, ANSI C, enum constants must be representable as ints.
We assumed at-least-33-bit ints. This worked on some 32-bit
systems because we don't mix negative sysinit enum constants with
too-large sysinit enum constants, and the compiler used an unsigned
32-bit type for sysinit enum variables, so sysinit enum variables
were sorted correctly. The fix lops off 4 hopefully-unused bits
so that we now only assume at-least-29-bit ints.
as variables declared in the main block in the function, so shadowing
of parameters by variables declared in the main block is not just an
obfuscation).
Found by: lint
Apparently I didn't make my plans to make dev_t and devsw[] go away
under DEVFS quite clear enough to Peter Dufault as he stitched the SCSI
system together using them when he redid the configuration side of things.
This made is rather an effort to remove all vestiges of dev_t and
devsw[] entries from sd.c in DEVFS/SLICE mode.
---------
Make callers of namei() responsible for releasing references or locks
instead of having the underlying filesystems do it. This eliminates
redundancy in all terminal filesystems and makes it possible for stacked
transport layers such as umapfs or nullfs to operate correctly.
Quality testing was done with testvn, and lat_fs from the lmbench suite.
Some NFS client testing courtesy of Patrik Kudo.
vop_mknod and vop_symlink still release the returned vpp. vop_rename
still releases 4 vnode arguments before it returns. These remaining cases
will be corrected in the next set of patches.
---------
Submitted by: Michael Hancock <michaelh@cet.co.jp>
is broken. It omits the SCSI_DATA_IN flag in the SCSI READ ELEMENT
STATUS command, which makes the 'chio status' command fail.
PR: 6528
Reviewed by: phk
Submitted by: Hans Huebner <hans@artcom.de>
Reverse the VFS_VRELE patch. Reference counting of vnodes does not need
to be done per-fs. I noticed this while fixing vfs layering violations.
Doing reference counting in generic code is also the preference cited by
John Heidemann in recent discussions with him.
The implementation of alternative vnode management per-fs is still a valid
requirement for some filesystems but will be revisited sometime later,
most likely using a different framework.
Submitted by: Michael Hancock <michaelh@cet.co.jp>
Support >8G drives in CHS mode. This is done by guesstimating the
cylinder count from the LBA size reported. It works on my shiny
new Maxtor 11.5G drive, YMMV.
Reports from users of other big drives (read Quantum bigfoot's)
are welcome...
Technologies' Socket 7 chipsets. This covers all of the Apollo chipsets
except the Master (82C570) and the MVP3, and it also covers the cheap
VXPro and VXTWO knockoffs of the VP1 and VPX.
PR: 6481
Reviewed by: phk
Submitted by: Lee Cremeans <lcremean@tidalwave.net>
the page offset. If a large file offset was passed in, a large negative
array index could be generated which could cause page faults etc at worst
and file corruption at the least. (Pages are allocated within file
space on page alignment boundaries, so a file offset being passed in here
is harmless to DTRT. The case where this was happening has already been
fixed though, this is in case it happens again).
Reviewed by: dyson
[__]inline is only used to bloat the code here. It gives a separate copy
of all the strings for each time this header is included...
Fixed misuse of __P(()).
called from vfs_bio_awrite() without going through cluster_write()
or ufs_bmaparray(), in particular for all writes to block disk devices.
Only ufs_bmaparray() sets vp->v_maxio in a correct way, and it doesn't
seem to be called early enough even for regular files.
expecting a sub-page offset. We were passing the file position,
and vm_page_bits() could do some interesting things when base was
larger PAGE_SIZE.
if (size > PAGE_SIZE - base)
size = PAGE_SIZE - base;
is interesting when (PAGE_SIZE - base) is negative. I could imagine that
this could have interesting consequences for memory page -> device block
bit validation.
necessary to compile with _THREAD_SAFE defined. This means that people
will get thread-aware code whether they like it or not. This change
is required to allow a process to link against libpthread and libc
to use kernel threads (and prevent each thread from clobbering another
thread's errno just be doing a syscall).
This is bound to break some ports, but it is strictly allowed by ANSI C,
so anything that breaks as a result was already broken anyway 8-).
"Sorry".
In msdosfs_sync: spelling fix, formatting changes; fix MNT_LAZY (sync
modified denodes, don't sync device)
Mostly submitted by (and with hints from): bde
Increase limit for maximum disk size: as far as I can see previous limit was
gratuitously too low.
deallocation cycles. This should provide a measurable improvement
on swap and memory allocation on loaded systems. It is unlikely a
complete solution. Also, provide more map info with procfs.
Chuck Cranor spurred on this improvement.
Linux emulation. This make Allegro Common Lisp 4.3 work under
FreeBSD!
Submitted by: Fred Gilham <gilham@csl.sri.com>
Commented on by: bde, dg, msmith, tg
Hoping he got everything right: eivind
is believed to have been broken with the Brakmo/Peterson srtt
calculation changes. The result of this bug is that TCP connections
could time out extremely quickly (in 12 seconds).
Also backed out jdp's partial fix for this problem in rev 1.17 of
tcp_timer.c as it is obsoleted by this commit.
Bug was pointed out by Kevin Lehey <kml@roller.nas.nasa.gov>.
PR: 6068
- pessimized i/o port types.
- other pessimized types.
- Don't use DEBUG (causes LINT warnings). Use DGB_DEBUG instead.
- commented out code.
- cloned code that doesn't apply ("Smarts" is for the cy driver only).
Submitted by: bde
dereference uninitialized pointers.
o Fix DEVFS permissions
o Fix DEVFS minor numbers
o Add initial & lock devices for cua device.
o Fix permissions in line with sio.
was really removed, or simply 'faked' by a suspend/resume. Keep track
of both current and previous state, and send that information to the
userland programs.
[
XXX - This breaks binary compatability with older pccardd programs, but
they don't work reliably. :(
]
