and not only for the DCTCP congestion control.
Submitted by: Richard Scheffenegger
Reviewed by: rgrimes, tuexen@, Cheng Cui
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D23119
recovery. This is required by RFC 3168.
Submitted by: Richard Scheffenegger
Reviewed by: rgrimes@, tuexen@, Cheng Cui
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D23118
indicates that ECN should be negotiated for the client side.
Submitted by: Richard Scheffenegger
Reviewed by: rgrimes@, tuexen@
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D23228
The routing subdirectory installed into the same directory as the test tests,
which caused them to overwrite the net Kyuafile. As a result these tests were
not executed.
X-MFC-With: r356146
The existing AF_UNIX socket garbage collector destroys any socket
which may potentially be in a cycle, as indicated by its file reference
count being equal to its enqueue count. However, this can produce false
positives for in-flight sockets which aren't part of a cycle but are
part of one or more SCM_RIGHTS mssages and which have been closed
on the sending side. If the garbage collector happens to run at
exactly the wrong time, destruction of these sockets will render them
unusable on the receiving side, such that no previously-written data
may be read.
This change rewrites the garbage collector to precisely detect cycles:
1. The existing check of msgcount==f_count is still used to determine
whether the socket is potentially in a cycle.
2. The socket is now placed on a local "dead list", which is used to
reduce iteration time (and therefore contention on the global
unp_link_rwlock).
3. The first pass through the dead list removes each potentially-dead
socket's outgoing references from the graph of potentially-dead
sockets, using a gc-specific copy of the original reference count.
4. The second series of passes through the dead list removes from the
list any socket whose remaining gc refcount is non-zero, as this
indicates the socket is actually accessible outside of any possible
cycle. Iteration is repeated until no further sockets are removed
from the dead list.
5. Sockets remaining in the dead list are destroyed as before.
PR: 227285
Submitted by: jan.kokemueller@gmail.com (prior version)
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D23142
This may be used for the local module to hook in and load any additional
modules that it wants, since it can't modify the modules table internal to
config. We may consider adding API to do so at a later time, but I suspect
it will be more complicated to use with little return.
status is captured but ignored for the purpose of loading the hook. status
will be false if *any* module failed to load, but we typically don't let
that halt the boot so there's no reason to let it halt hooks. Some vendors
or setups may have expected fails that would be actively thwarted by
checking it.
We may, at a later date, consider adding an API for letting non-config
modules check which modules have successfully (or not) loaded in case an
unexpected failure *should* halt whatever they are doing.
MFC after: 3 days
The major problem with the current ordering is that loader.conf may contain
all of the magic we need to actually setup the console, so loading local.lua
prior to that can make it excessively difficult and annoying to debug
(whoops, sorry Ravi & Warner).
The new ordering has some implications, but I suspect they are a non-issue.
The first is that it's no longer possible for the local module to inject any
logic prior to loading config -- I suspect no one has relied on this. The
second implication is that the config.loaded hook is now useless, as the
local module will always be included after that hook would have fired.
For config.loaded, I will opt to leave it in, just in case we add an early
point for local lua to get injected or in case one wants to schedule some
deferred logic in a custom loader.lua. The overhead of having it if no hooks
will be invoked is relatively minimal.
Diagnosed by: imp
Reported by: imp, rpokala (most likely)
MFC after: 3 days
This allows the data sender to increase the CWND faster.
Submitted by: Richard Scheffenegger
Reviewed by: rgrimes@, tuexen@, Cheng Cui
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D22670
including user data in the SYN-ACK. When DSACK support was added in
r347382, an immediate ACK was sent even for the received SYN with
user data. This patch fixes that and allows again to send user data with
the SYN-ACK.
Reported by: Jeremy Harris
Reviewed by: Richard Scheffenegger, rrs@
MFC after: 1 week
Sponsored by: Netflix, Inc.
Differential Revision: https://reviews.freebsd.org/D23212
In libalias, a new flag PKT_ALIAS_UNREGISTERED_RFC6598 is added.
This is like PKT_ALIAS_UNREGISTERED_ONLY, but also is RFC 6598 aware.
Also, we add a new NAT option to ipfw called unreg_cgn, which is like
unreg_only, but also is RFC 6598-aware. The reason for the new
flags/options is to avoid breaking existing networks, especially those
which rely on RFC 6598 as an external address.
Submitted by: Neel Chauhan <neel AT neelc DOT org>
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D22877
Both vm_object_scan_all_shadowed() and vm_object_collapse_scan() might
observe an invalid page left in the default backing object by the
fault handler that retried. Check for the condition and refuse to collapse.
Reported and tested by: pho
Reviewed by: jeff
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D23331
o Make the pci_host_generic_acpi_attach() globally visible.
o Declare a new driver class.
These will be used by a new PCI root complex driver.
Sponsored by: DARPA, AFRL
This directory stages certdata into .OBJDIR and processes it, but does not
actually build a prog-shaped object; bsd.obj.mk provides the minimal support
that we actually need, an .OBJDIR and descent into subdirs. This is
admittedly the nittiest of nits.
POSIX and en_US.US_ASCII are aliases (symlinks) to the C locale. They were
not previously tagged with a pkgbase pacakge. Add the tag so that they are
handled correctly on pkgbase-installed/updated systems.
[This is r356990 reapplied with a corrected commit message.]
Discussed with: manu
This unbreaks Mono (mono-devel-4.6.2.7+dfsg-1ubuntu1 from Ubuntu Bionic);
previously would crash on "amd64_is_imm32" assert.
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23306
an inline function vm_map_lookup_clip_start that invokes them both and
use it in places that invoke both. Drop a couple of local variables
made unnecessary by this function.
Reviewed by: markj
Tested by: pho
Differential Revision: https://reviews.freebsd.org/D22987
There is nothing to do but to bump the count even during said transition.
There are 2 places which can do it:
- vget only does this after locking the vnode, meaning there is no change in
contract versus inactive or reclamantion
- vref only ever did it with the interlock held which did not protect against
either (that is, it would always succeed)
VCHR vnodes retain special casing due to the need to maintain dev use count.
Reviewed by: jeff, kib
Tested by: pho (previous version)
Differential Revision: https://reviews.freebsd.org/D23185
vget is almost always called with LK_SHARED, meaning the flag (if present) is
almost guaranteed to get cleared. Stop handling it in the first place and
instead let the thread which wanted to do inactive handle the bumepd usecount.
Reviewed by: jeff
Tested by: pho
Differential Revision: https://reviews.freebsd.org/D23184
Doing so runs into races with filesystems which make half-constructed vnodes
visible to other users, while depending on the chain vput -> vinactive ->
vrecycle to be executed without dropping the vnode lock.
Impediments for making this work got cleared up (notably vop_unlock_post now
does not do anything and lockmgr stops touching the lock after the final
write). Stacked filesystems keep vhold/vdrop across unlock, which arguably can
now be eliminated.
Reviewed by: jeff
Differential Revision: https://reviews.freebsd.org/D23344
This evens it up with other locking primitives.
Note lock profiling still touches the lock, which again is in line with the
rest.
Reviewed by: jeff
Differential Revision: https://reviews.freebsd.org/D23343
Most of ntpd still handles MK_OPENSSL ok, but the libevent import brought
in the SSL bufferevent routines without checking MK_OPENSSL.
This doesn't completely fix WITHOUT_CRYPTO=YES building, but hey, it's one
less broken thing.
I sent out an e-mail on 2020/01/21 with a plan to do this to Kyle, Rob, and
Wes; all parties have responded in the affirmative that it's OK to drop it
from these files.
The existing APIs simply pass the implicit global state to the _r variants.
No functional change.
Note that these routines are not exported from libc and are not intended to be
exported. If someone wished to export them from libc (which I would
discourage), they should first be modified to match the inconsistent parameter
type / order of the glibc public interfaces of the same names.
I know Ravi will ask, so: the eventual goal of this series is to replace
rand(3) with the implementation from random(3) (D23290). However, I'd like to
wait a bit longer on that one to see if more feedback emerges.
Reviewed by: kevans, markm
Differential Revision: https://reviews.freebsd.org/D23289
DRIVER_MODULE does not actually define a MODULE_VERSION, which is required
to satisfy a MODULE_DEPENDency. Declare one explicitly in
hwpstate_intel(4).
Reported by: flo
X-MFC-With: r357002
If we have a 'set skip on <ifgroup>' rule this flag it set on the group
kif, but must also be set on all members. pfctl does this when the rules
are set, but if groups are added afterwards we must also apply the flags
to the new member. If not, new group members will not be skipped until
the rules are reloaded.
Reported by: dvl@
Reviewed by: glebius@
Differential Revision: https://reviews.freebsd.org/D23254
