tuexen [Wed, 4 Mar 2020 16:41:25 +0000 (16:41 +0000)]
When using automatically generated flow labels and using TCP SYN
cookies, use the same flow label for the segments sent during the
handshake and after the handshake.
This fixes a bug by making sure that sc_flowlabel is always stored in
network byte order.
Reviewed by: bz@
MFC after: 3 days
Sponsored by: Netflix, Inc.
Differential Revision: https://reviews.freebsd.org/D23957
Add four new counters for ND6 related Anti-DoS measures.
We split these out into a separate upfront commit so that we only
change the struct size one time. Implementations using them will
follow.
tuexen [Wed, 4 Mar 2020 12:22:53 +0000 (12:22 +0000)]
Don't send an uninitilised traffic class in the IPv6 header, when
sending a TCP segment from the TCP SYN cache (like a SYN-ACK).
This fix initialises it to zero. This is correct for the ECN bits,
but is does not honor the DSCP what an application might have set via
the IPPROTO_IPV6 level socket options IPV6_TCLASS. That will be
fixed separately.
Reviewed by: Richard Scheffenegger
MFC after: 3 days
Sponsored by: Netflix, Inc.
Differential Revision: https://reviews.freebsd.org/D23900
luporl [Wed, 4 Mar 2020 12:21:38 +0000 (12:21 +0000)]
[aacraid] Add missing unmap call for SYNC mode
This issue was observed on a PowerPC64 machine with an Adaptec RAID Controller
with PCI device ID 0x028d. After several read/write operations, the kernel was
panic'ing in bus_dmamap_sync(). This was due to a missing aac_unmap_command()
in the SYNC path.
chs [Wed, 4 Mar 2020 00:22:50 +0000 (00:22 +0000)]
if vm_pager_get_pages_async() returns an error, release the sfio->nios
refcount that we took earlier that represents the I/O that ended up
not being started.
imp [Tue, 3 Mar 2020 17:40:29 +0000 (17:40 +0000)]
Get rid of silly /* FALLTHROUGH */ lines
Consistently omit /* FALLTHROUGH */ when we have a case statement that does
nothing. Since compilers don't warn about stacked case statements, and we were
inconsistent, resolve by removing extras.
mav [Tue, 3 Mar 2020 15:05:13 +0000 (15:05 +0000)]
Increase number of write completion threads, matching ZoL.
Our iSCSI benchmarks on a large 80-core system show that previous limit
of 8 threads can be a bottleneck. At some points this change increases
write IOPS by as much as 50%. I am still not sure that so many threads
is really required, but we tested lower amounts and got no significant
benefits, while latencies were a bit worse, so decided to not diverge.
Add proper #includes, and #ifdefs and some style fixes to make RSS
kernels compile again. There are still possible issues with uin16_t
vs. uint_t cpuid which I am not going near.
The results of ktls_get_cpu() are stored in u_int and NETISR_CPUID_NONE
requires u_int. Adjust uint16_t to uint_t in order to make RSS kernels
compile some more again.
HPTS still has to be fixed, which is a bit more complicated.
ip6: retire in6_selectroute_fib() as promised 8 years ago
In r231852 I added in6_selectroute_fib() as a compat function with the
fibnum as an extra argument compared to in6_selectroute() to keep the
KPI stable.
Way too late retire this function again and add the fib to in6_selectroute()
which also only has a single consumer now and was an orphan function before.
0mp [Tue, 3 Mar 2020 13:25:08 +0000 (13:25 +0000)]
powerd.8: Improve style & fix typos
- Sort options.
- Do not use macros (like .Ar) to specify width for Bl (macros within that
string are not expanded).
- Use Cm instead of Ar for mode names.
- Fix some typos reported by mandoc.
- Move the documentation of the PID file from the -P flag description to
the FILES section.
ip6_output: use new routing KPI when not passed a cached route
Implement the equivalent of r347375 (IPv4) for the IPv6 output path.
In IPv6 we get passed a cached route (and inp) by udp6_output()
depending on whether we acquired a write lock on the INP.
In case we neither bind nor connect a first UDP packet would come in
with a cached route (wlocked) and all further packets would not.
In case we bind and do not connect we never write-lock the inp.
When we do not pass in a cached route, rather than providing the
storage for a route locally and pass it over the old lookup code
and down the stack, use the new route lookup KPI and acquire all
details we need to send the packet.
Compared to the IPv4 code the IPv6 code has a couple of possible
complications: given an option with a routing hdr/caching route there,
and path mtu (ro_pmtu) case which now equally has to deal with the
possibility of having a route which is NULL passed in, and the
fwd_tag in case a firewall changes the next hop (something to
factor out in the future).
fib6_rte_to_nh_*: return a link-local gw address with scope embedded
In fib6_rte_to_nh_* when returning a link-local gateway address
currently we do clear the scope. That could be recovered using
the ifp returned as well, but the code in general seems to
expect a link-local address with scope embeedded as otherwise
the "dst" (gw) passed to the output routines will not include
scope and not send the packet out (the right interface).
Do not clear the scope when returning a link-local address and
allow packets to go out (the right interface).
Remove the (now) extra scope recovery in the IPv6 fast-fwd code.
andrew [Tue, 3 Mar 2020 08:28:16 +0000 (08:28 +0000)]
Store the boot exception level on arm64 so it can be queried later
A hypervisor, e.g. bhyve, will need to know what exception levelthe kernel
was in when it started booting. If it was EL2 we can then enable said
hypervisor.
Store the boot exception level and allow the kernel to later query it.
Obtained from: https://github.com/FreeBSD-UPB/freebsd (earlier version)
Sponsored by: Innovate UK
jhibbits [Tue, 3 Mar 2020 03:22:00 +0000 (03:22 +0000)]
powerpc/powernv: powernv_node_numa_domain() fix non-NUMA case
If NUMA is not enabled in the kernel config, or is disabled at boot, this
function should just return domain 0 regardless of what's in the device
tree.
csjp [Tue, 3 Mar 2020 01:46:35 +0000 (01:46 +0000)]
In r358471, we interrupted the case block that would eventually lead
to the path related tokens not being processed. Restore this behavior and
and move AUE_JAIL_SET in this block, as it may conditionally contain a
path token.
cem [Tue, 3 Mar 2020 00:20:08 +0000 (00:20 +0000)]
Add extremely useful calendar(1) application to FreeBSD
It does extremely useful things like execute sendmail and spew dubiously
accurate factoids.
From the feedback, it seems like it is an essential utility in a modern unix
and not at all a useless bikeshed. How do those Linux people live without it?
Reverts r358561.
manu [Mon, 2 Mar 2020 21:19:51 +0000 (21:19 +0000)]
cpufreq_dt: Improve multiple opp support
When looking for cpu with the same OPP starts from the root /cpus node
so each instance of cpufreq_dt will now each cpu with the same operating
point.
Also test that the node we are testing have the property "device_type" set
to be equal to "cpu".
While here add more debug printfs (off by defaults).
emaste [Mon, 2 Mar 2020 20:14:27 +0000 (20:14 +0000)]
Add deprecation notices to ctau and cx drivers
These support outdated or obsolete ISA WAN (T1/E1) sync serial cards,
and these drivers haven't really been touched (other than in tree-wide
sweeps to keep them building) for 15+ years.
Related PCI devices ce and cp are still in the tree, with deprecation
proposed in D23928.
MFC after: 1 week
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
kevans [Mon, 2 Mar 2020 18:40:34 +0000 (18:40 +0000)]
hexdump: tests: take into account byte order
Hexdump test was failling on big endian systems when testing decimal, octal
and hexa outputs as the tests were designed on a little endian system. This
revision adds the two distinct flavors of output expected and determines at
runtime which to compare against.
luporl [Mon, 2 Mar 2020 16:11:25 +0000 (16:11 +0000)]
[aacraid] Prevent sense data from causing a buffer overflow
This issue was observed on a PowerPC64 machine with an Adaptec RAID
Controller with PCI device ID 0x028d, where sense data was causing a
buffer overflow because of wrong max sense length logic.
kevans [Mon, 2 Mar 2020 15:58:50 +0000 (15:58 +0000)]
pkgbase: remove logic for _profile packages
We don't produce these anymore as of r356797, remove the remnant in
generate-ucl.sh that accounted for them. This isn't strictly necessary, but
future work is needed for the various packages that can be generated on a
lib build.
Namely, we may produce -development packages for private/internal libs that
should be installed but won't have the base FreeBSD-libfoo pkg to depend on
because it's internal (e.g. liby, libpmcstat, libifconfig) but we want the
headers installed. It may be a better move to just shove these into
-runtime-development instead, but if not then we've just simplified the
cases that need to take private/internal libs into account.
hselasky [Mon, 2 Mar 2020 09:45:06 +0000 (09:45 +0000)]
Expose the ACPI power button, sleep button and LID state as evdev's.
This allows libinput to disable touchpads when the lid is closed and
various desktop environments can show power-off dialogs when the power
button is pressed. While the latter is doable with devd a
cross-platform solution is nicer.
kevans [Mon, 2 Mar 2020 04:22:38 +0000 (04:22 +0000)]
elfctl: initialize features
GCC points out a couple levels down in convert_to_features that this may be
used uninitialized. Indeed, this is true- initialize it to NULL so that we
at least deref a null pointer.
kevans [Mon, 2 Mar 2020 02:45:57 +0000 (02:45 +0000)]
if_edsc: generate an arbitrary MAC address
When generating an cloned interface instance in edsc_clone_create(),
generate a MAC address from the FF OUI with ether_gen_addr(). This allows us
to have unique local-link addresses. Previously, the MAC address was zero.
emaste [Mon, 2 Mar 2020 02:36:41 +0000 (02:36 +0000)]
Move ELF feature note tool to usr.bin/elfctl
elfctl is a tool for modifying the NT_FREEBSD_FEATURE_CTL ELF note,
which contains a set of flags for enabling or disabling vulnerability
mitigations and other features.
Reviewed by: csjp, kib
MFC after: 2 weeks
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23910
grog [Sun, 1 Mar 2020 22:10:37 +0000 (22:10 +0000)]
Remove comment about Blackthorn winds, apparently imported from 4.4BSD
Lite. Nowadays it's trivial to find the explanation, such as at
https://www.deseret.com/2000/2/27/19493013/blackthorn-winds-make-bushes-bud.
It doesn't seem appropriate to replace it with an explanation.
mjg [Sun, 1 Mar 2020 21:53:46 +0000 (21:53 +0000)]
fd: move vnodes out of filedesc into a dedicated structure
The new structure is copy-on-write. With the assumption that path lookups are
significantly more frequent than chdirs and chrooting this is a win.
This provides stable root and jail root vnodes without the need to reference
them on lookup, which in turn means less work on globally shared structures.
Note this also happens to fix a bug where jail vnode was never referenced,
meaning subsequent access on lookup could run into use-after-free.
imp [Sun, 1 Mar 2020 18:18:01 +0000 (18:18 +0000)]
Remove support for FreeBSD 4-7 from the iscsi initiator.
Also, inline/remove now empty or trivial macros. CAM has evolved enough this
code couldn't work there anyway, and the API sweeep commits made since then were
made unconditional.
imp [Sun, 1 Mar 2020 17:27:30 +0000 (17:27 +0000)]
Remove all the compatibility hacks for systems that predate FreeBSD 8. Some of
these look to be cut and pasted from other drivers since this driver was
committed to FreeBSD 7-current and MFC'd to FreeBSD 6. The ones for FreeBSD 4
and 5 likely never were working...
imp [Sun, 1 Mar 2020 16:45:54 +0000 (16:45 +0000)]
Remove FreeBSD 7 conditional code... We've had a lot of other changes since then
and al_eth appears only in the Annapurna ARM designs which arrived in the tree
after that.
tijl [Sun, 1 Mar 2020 13:12:04 +0000 (13:12 +0000)]
linuxulator: Map scheduler priorities to Linux priorities.
On Linux the valid range of priorities for the SCHED_FIFO and SCHED_RR
scheduling policies is [1,99]. For SCHED_OTHER the single valid priority is
0. On FreeBSD it is [0,31] for all policies. Programs are supposed to
query the valid range using sched_get_priority_(min|max), but of course some
programs assume the Linux values are valid.
This commit adds a tunable compat.linux.map_sched_prio. When enabled
sched_get_priority_(min|max) return the Linux values and sched_setscheduler
and sched_(get|set)param translate between FreeBSD and Linux values.
Because there are more Linux levels than FreeBSD levels, multiple Linux
levels map to a single FreeBSD level, which means pre-emption might not
happen as it does on Linux, so the tunable allows to disable this behaviour.
It is enabled by default because I think it is unlikely that anyone runs
real-time software under Linux emulation on FreeBSD that critically relies
on correct pre-emption.
This fixes FMOD, a commercial sound library used by several games.
PR: 240043
Tested by: Alex S <iwtcex@gmail.com>
Reviewed by: dchagin
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D23790
cperciva [Sat, 29 Feb 2020 22:31:23 +0000 (22:31 +0000)]
Add -N option to powerd(8) to ignore "nice" time.
With powerd_flags="-N", this makes powerd(8) exclude "nice" time when
computing the CPU utilization. This makes it possible to prevent
CPU-intensive "background" processes from spinning up the CPU.
Note that only *userland* CPU usage belonging to "nice" processes is
excluded; we do not track whether time spent in the kernel is on behalf
of nice or non-nice processes, so kernel-intensive nice processes can
still result in the CPU being sped up.
csjp [Sat, 29 Feb 2020 19:17:24 +0000 (19:17 +0000)]
Currently kernel audit events for jail_set(2), jail_get(2), jail_attach(2),
jail_remove(2) and finally setloginclass(2) are not being converted and
committed into userspace. Add the cases for these syscalls and make sure
they are being converted properly.
emaste [Sat, 29 Feb 2020 17:10:54 +0000 (17:10 +0000)]
retire in-tree GPL dtc devicetree compiler
Now that we no longer have GCC 4.2.1 in the tree and can assume FreeBSD
is being built with a C++11 compiler available, we can use BSDL dtc
unconditionally and retire the GPL dtc.
GPL dtc now has FreeBSD CI support via Cirrus-CI to help ensure it
continues to build/work on FreeBSD and is available in the ports tree
if needed.
The copy of (copyfree licensed) libfdt that we actually use is in
sys/contrib/libfdt so the extra copy under contrib/dtc/libfdt can be
removed along with the rest of the GPL dtc.
Reviewed by: kevans, ian, imp, manu, theraven
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23192
dim [Sat, 29 Feb 2020 14:11:27 +0000 (14:11 +0000)]
Fix the following -Werror warning from clang 10.0.0:
sys/arm64/arm64/identcpu.c:1170:5: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation]
break;
^
sys/arm64/arm64/identcpu.c:1168:4: note: previous statement is here
if (fv[j].desc[0] != '\0')
^
The break should be after the if statement, indented one level less.
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D23871
emaste [Sat, 29 Feb 2020 13:15:01 +0000 (13:15 +0000)]
src.opts.mk: simplify Clang and lld bootstrap defaults
With the retirement of GCC 4.2.1 we can assume the host compiler supports
C++11, and can simplify the Clang and LLD defaults. Clang and lld are now
enabled by default everywhere, and are used as the bootstrap compiler and
linker for all targets except MIPS.
emaste [Sat, 29 Feb 2020 03:25:51 +0000 (03:25 +0000)]
remove GCC 4.2.1 build infrastructure
As described in Warner's email message[1] to the FreeBSD-arch mailing
list we have reached GCC 4.2.1's retirement date. At this time all
supported architectures either use in-tree Clang, or rely on external
toolchain (i.e., a contemporary GCC version from ports).
GCC 4.2.1 was released July 18, 2007 and was imported into FreeBSD later
that year, in r171825. GCC has served us well, but version 4.2.1 is
obsolete and not used by default on any architecture in FreeBSD. It
does not support modern C and does not support arm64 or RISC-V.
Thanks to everyone responsible for maintaining, updating, and testing
GCC in the FreeBSD base system over the years.
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