This is part 2 of r347078, pulling the page directory out of the Book-E
pmap. This breaks KBI for anything that uses struct pmap (such as vm_map)
so any modules that access this must be rebuilt.
instead of the hard-coded value of 4. This is a precursor to increasing
the number of interfaces speficied in "on {interface, ..., interface}".
Note that though this feature is coded in ipf_y.y, it is partially
supported in the ipfilter kld, meaning it does not work yet (and is yet
to be documented in ipf.5 too).
MFC after: 2 weeks
broken ipfilter rule matches (upstream bug #554). The upstream patch
was incomplete, it resolved all but one rule compare issue. The issue
fixed here is when "{to, reply-to, dup-to} interface" are used in
conjuncion with "on interface". The match was only made if the on keyword
was specified in the same order in each case referencing the same rule.
This commit fixes this.
The reason for this is that interface name strings and comment keyword
comments are stored in a a variable length field starting at fr_names
in the frentry struct. These strings are placed into this variable length
in the order they are encountered by ipf_y.y and indexed through index
pointers in fr_ifnames, fr_comment or one of the frdest struct fd_name
fields. (Three frdest structs are within frentry.) Order matters and
this patch takes this into account.
While in here it was discovered that though ipfilter is designed to
support multiple interface specifiations per rule (up to four), this
undocumented (the man page makes no mention of it) feature does not work.
A todo is to fix the multiple interfaces feature at a later date. To
understand the design decision as to why only four were intended, it is
suspected that the decision was made because Sun workstations and PCs
rarely if ever exceeded four NICs at the time, this is not true in 2019.
PR: 238796
Reported by: WHR <msl0000023508@gmail.com>
MFC after: 2 weeks
status register clears pending interrupts. By moving that code out of the
interrupt handler into a taskqueue task, I effectively created an interrupt
storm by returning from the handler with the interrupt source still active.
We'll have to find a different solution for this driver's need to sleep
in an ithread context.
Long ago this was needed, but now low-level i2c controller drivers cleverly
defer attachment of the bus until interrupts are enabled (if they require
interrupts to function), so that every i2c slave device doesn't have to.
We used the aw_clk_nm clock for clock with only one divider factor
and used a fake multiplier factor. This cannot work properly as we
end up writing the "fake" factor to the register (and so always set
the LSB to 1).
Create a new clock for those.
The reason for not using the clk_div clock is because those clocks are
a bit special. Since they are (almost) all related to video we also need
to set the parent clock (the main PLL) to a frequency that they can support.
As the main PLL have some minimal frequency that they can support we need to
be able to set the main PLL to a multiple of the desired frequency.
Let say you want to have a 71Mhz pixel clock (typical for a 1280x800 display)
and the main PLL cannot go under 192Mhz, you need to set it to 3 times the
desired frequency and set the divider to 3 on the hdmi clock.
So this also introduce the CLK_SET_ROUND_MULTIPLE flag that allow for this kind
of scenario.
- Put all clock and control unit driver in BUS_PASS_RESOURCE except
for the DE2 CCU as it needs the main CCU to be available.
- Use BUS_PASS_CPU for a20_cpu_cfg as it makes more sense.
- For aw_syscon use SCHEDULER pass as we need it early for drivers
that attach in BUS_PASS_SUPPORTDEV
- For the rest we can use BUS_PASS_SUPPORTDEV
ensure that the subsequent mbuf contains the remainder of the bytes
the caller sought. If this is not the case, fall through to the code
which gathers the bytes in a new mbuf.
This fixes a bug where m_pulldown() could fail to gather all the desired
bytes into consecutive memory.
PR: 238787
Reported by: A reddit user
Discussed with: emaste
Obtained from: NetBSD
MFC after: 3 days
Our in-tree gcc doesn't have a no-tree-vectorize optimization knob, so we get a
warning that it's unused. This causes the build to fail on all our gcc platforms.
Add a quick version check as a stop-gap measure to get CI building again.
An earlier version of the patch had code that set "error" between
line#s 2797-2799. When that code was moved, the second check for "error != 0"
could never be true and the check became harmless cruft.
This patch removes the cruft, mainly to make Coverity happy.
Reported by: asomers, cem
Since the VOP_IOCTL(FIOSEEKDATA/FIOSEEKHOLE) calls are done with the
vnode unlocked, it is possible for another thread to do:
- truncate(), lseek(), write()
between the two calls and create a hole where FIOSEEKDATA returned the
start of data.
For this case, VOP_IOCTL(FIOSEEKHOLE) will return the same offset for
the hole location. This could result in an infinite loop in the copy
code, since copylen is set to 0 and the copy doesn't advance.
Usually, this race is avoided because of the use of rangelocks, but the
NFS server does not do range locking and could do a sequence like the
above to create the hole.
This patch checks for this case and makes the hole search fail, to avoid
the infinite loop.
At this time, it is an open question as to whether or not the NFS server
should do range locking to avoid this race.
We should support removing vdev from boot pool. Update loader zfs reader
to support com.delphix:removing.
Reviewed by: allanjude
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D18901
Create a rough and ready NOTES file from GENERIC, remove the duplication from
sys/conf/NOTES and add relevant no* directives to make this compile.
Reviewed by: jhb, manu (earlier versions that differed only in comments)
Differential Revision: https://reviews.freebsd.org/D21184
The COMPAT_43 option isn't quite like the other compat options, and arm64 makes
attempts to support it in 64-bit mode. In 32-bit compat mode, however, two
syscall implementations that COMPAT_FREEBSD32 assumes will be there are
missing. Provide implementations for these: ofreebsd32_sigreturn (which we'll
never encounter, so implement it as nosys as is done in kern_sig.c) and
ofreebsd32_getpagesize, where we'll always return 4096 since that's the only
PAGE_SIZE we support, similar to how the ia32 implementation does things.
Reviewed by: manu@
Differential Revision: https://reviews.freebsd.org/D21192
During early stages of kern_exec(), including strings copyout,
p_textvp for init is NULL. This prevented stack grow from working for
init execution.
Without stack gap enabled, initial stack segment size is enough for
strings passed by kernel to init. With the gap enabled, the used
address might fall out of the initial segment, which kills init.
Exclude initproc from the check for contexts which should not cause
stack grow in the target map.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Attempts to use cryptodev (e.g. tests at /usr/src/tests/sys/opencrypto
with armv8crypto added to the module lists) were causing a panic.
Submitted by: Greg V <greg_unrelenting.technology>
Differential Revision: https://reviews.freebsd.org/D21012
IPPROTO 33 is DCCP in the IANA Registry:
https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml
IPPROTO_SEP was added about 20 years ago in r33804. The entries were added
straight from RFC1700, without regard to whether they were used.
The reference in RFC1700 for SEP is '[JC120] <mystery contact>', this is an
indication that the protocol number was probably in use in a private network.
As RFC1700 is no longer the authoritative list of internet numbers and that
IANA assinged 33 to DCCP in RFC4340, change the header to the actual
authoritative source.
Reviewed by: Richard Scheffenegger, bz
Approved by: bz (mentor)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D21178
Move ip6asfrag and the accompanying IP6_REASS_MBUF macro from
ip6_var.h into frag6.c as they are not used outside frag6.c.
Sadly struct ip6q is all over the mac framework so we have to
leave it public.
This reduces the public KPI space.
MFC after: 3 months
X-MFC: possibly MFC the #define only to stable branches
Sponsored by: Netflix
Consitently put () around return values.
Do not assign variables at the time of variable declaration.
Sort variables. Rename ia to ia6, remove/reuse some variables used only
once or twice for temporary calculations.
No functional changes intended.
MFC after: 3 months
Sponsored by: Netflix
Cleanup some comments (start with upper case, ends in punctuation,
use width and do not consume vertical space). Update comments to
RFC8200. Some whitespace changes.
No functional changes.
MFC after: 3 months
Sponsored by: Netflix
- Use new zlib headers;
- Removed z_alloc and z_free to use the common sys/dev/zlib version.
- Replace z_compressBound with compressBound from zlib.
While there, limit LZMA CFLAGS to apply only for g_uzip_lzma.c.
PR: 229763
Submitted by: Yoshihiro Ota <ota j email ne jp> (with changes,
bugs are mine)
Differential Revision: https://reviews.freebsd.org/D20271
pmap's lock ensures that other operations on the pmap don't observe the
old mapping being broken before the new mapping is established. However,
pmap_kextract() doesn't acquire the kernel pmap's lock, so it may observe
the broken mapping. And, if it does, it returns an incorrect result.
This revision implements a lock-free solution to this problem in
pmap_update_entry() and pmap_kextract() because pmap_kextract() can't
acquire the kernel pmap's lock.
Reported by: andrew, greg_unrelenting.technology
Reviewed by: andrew, markj
Tested by: greg_unrelenting.technology
X-MFC with: r350579
Differential Revision: https://reviews.freebsd.org/D21169
It is part of -Wformat, which is enabled by -Wall. Empty format strings are
well defined and it is perfectly reasonable to expect them in a formatting
interface.
KDB is standard and the kdb_active variable is always available. So,
de-conditionalize inclusion of sys/kdb.h in kern_sysctl.c.
Reported by: Michael Butler <imb AT protected-networks.net>
X-MFC-With: r350713
Sponsored by: Dell EMC Isilon
Implement `sysctl` in `ddb` by overriding `SYSCTL_OUT`. When handling the
req, we install custom ddb in/out handlers. The out handler prints straight
to the debugger, while the in handler ignores all input. This is intended
to allow us to print just about any sysctl.
There is a known issue when used from ddb(4) entered via 'sysctl
debug.kdb.enter=1'. The DDB mode does not quite prevent all lock
interactions, and it is possible for the recursive Giant lock to be unlocked
when the ddb(4) 'sysctl' command is used. This may result in a panic on
return from ddb(4) via 'c' (continue). Obviously, this is not a problem
when debugging already-paniced systems.
Submitted by: Travis Lane (formerly: <travis.lane AT isilon.com>)
Reviewed by: vangyzen (earlier version), Don Morris <dgmorris AT earthlink.net>
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D20219
On FreeBSD 13.0, the fuse driver will always be known as fusefs. The
backwards compatibility symlink will still be used for stable/12 and
stable/11, though.
Reported by: jhibbits
Reviewed by: rgrimes, imp, cem
MFC after: Never
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D21181
Similar to what was done for device_printfs in r347229.
Convert g_print_bio() to a thin shim around g_format_bio(), which acts on an
sbuf; documented in g_bio.9.
Reviewed by: markj
Discussed with: rlibby
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21165
The API is used to gracefully terminate text line(s) with a single \n. If
the formatted buffer was empty or already ended in \n, it is unmodified.
Otherwise, a newline character is appended to it. The API, like other
sbuf-modifying routines, is only valid while the sbuf is not FINISHED.
Reviewed by: rlibby
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21030
Code flow was somewhat difficult to read due to the combination of
multiple return sites and the 4x possible dynamic constructions of an
sbuf. (Future consideration: do we need all 4?) Refactored slightly to
improve legibility.
No functional change.
Sponsored by: Dell EMC Isilon
