Testing with fsx has revealed problems and in order to
hunt the bugs properly we need reduce the complexity.
This seems to help but is not a complete solution.
MFC after: 3 days
logic (refer to [1] for associated discussion). snd_cwnd and snd_wnd are
unsigned long and on 64 bit hosts, min() will truncate them to 32 bits and could
therefore potentially corrupt the result (although under normal operation,
neither variable should legitmately exceed 32 bits).
[1] http://lists.freebsd.org/pipermail/freebsd-net/2013-January/034297.html
Submitted by: jhb
MFC after: 1 week
generating binary diffs.
- Constify a few strings used in the driver.
- Style changes to make the driver compile with default clang settings.
Approved by: HighPoint Technologies
MFC after: 3 days
gcc handles -symbolic by passing -Bsymbolic through to ld. clang ignores
-symbolic and thus invokes ld without -Bsymbolic which leads to some symbols
not being properly linked in loader.efi. Fix this by using -Wl,-Bsymbolic which
passes -Bsymbolic to ld in both the gcc and clang cases.
Approved by: rpaulo
This is easily possible now that the TX is protected by a single
lock, rather than a per-TXQ (and thus per-TID) lock.
Only set CLRDMASK if none of the destinations are filtered.
This likely will need some tuning when it comes time to do UASPD/PS-POLL
TX, however at that point it should be manually set anyway.
Tested:
* AR9280, STA mode
TODO:
* More thorough testing in AP mode
* test other chipsets, just to be safe/sure.
that 'smp_started != 0'.
This is required because the VT-x initialization calls smp_rendezvous()
to set the CR4_VMXE bit on all the cpus.
With this change we can preload vmm.ko from the loader.
Reported by: alfred@, sbruno@
Obtained from: NetApp
arch_zfs_probe method is supposed to only probe for ZFS vdevs, but it can
not expect that ZFS data is in a ready state yet.
So, move some code from sparc64_zfs_probe to main to meet the constraints.
Reported by: Chris Ross <cross+freebsd@distal.com>
Tested by: Chris Ross <cross+freebsd@distal.com>
MFC after: 4 days
'bhyve' was developed by grehan@ and myself at NetApp (thanks!).
Special thanks to Peter Snyder, Joe Caradonna and Michael Dexter for their
support and encouragement.
Obtained from: NetApp
Make umass return an error code if SCSI sense retrieval request
has failed. Make sure scsi_error_action honors SF_NO_RETRY and
SF_NO_RECOVERY in all cases, even if it cannot parse sense bytes.
Reviewed by: hselasky (umass), scottl (cam)
interrupt counts and names, by making the names into an array of fixed-length
strings that can be directly indexed. This eliminates extra memory accesses
on every interrupt to increment the counts.
As a side effect, it also fixes a bug that would corrupt the names data
if a name was longer than MAXCOMLEN, which led to incorrect vmstat -i output.
Approved by: cognet (mentor)
to the old one's nfs.nfsrv.async.
Please note that by enabling this option (default is disabled), the system
could potentionally have silent data corruption if the server crashes
before write is committed to non-volatile storage, as the client side have
no way to tell if the data is already written.
Submitted by: rmacklem
MFC after: 2 weeks
two upcoming features:
semi-transparent mode:
when a device is opened in this mode, the
user program will be able to mark slots that must be forwarded
to the "other" side (i.e. from NIC to host stack, or viceversa),
and the forwarding will occur automatically at the next netmap syscall.
This saves the need to open another file descriptor and do
the forwarding manually.
direct-forwarding mode:
when operating with a VALE port, the user can specify in the slot
the actual destination port, overriding the forwarding decision
made by a lookup of the destination MAC. This can be useful to
implement packet dispatchers.
No API changes will be introduced.
No new functionality in this patch yet.
CPUs exhibit bad behavior if this is done (Intel Errata AAJ3, hangs on
Pentium-M, and trashing of the local APIC registers on a VIA C7). The
local APIC is implicitly mapped UC already via MTRRs, so the clflush isn't
necessary anyway.
MFC after: 2 weeks
tunable_mbinit() where it is next to where it is used later.
Change the sysinit level of tunable_mbinit() from SI_SUB_TUNABLES
to SI_SUB_KMEM after the VM is running. This allows to use better
methods to determine the effectively available physical and virtual
memory available to the kernel.
Update comments.
In a second step it can be merged into mbuf_init().
a process has an auditid/preselection masks specified, and
is jailed, include the zonename (jailname) token as a
part of the audit record.
Reviewed by: pjd
MFC after: 2 weeks
chip hangs.
* Always do a reset in ath_bmiss_proc(), regardless of whether the
hardware is "hung" or not. Specifically, for spectral scan, there's
likely a whole bunch of potential hangs that we don't (yet) recognise
in the HAL. So to avoid staying RX deaf persisting until the station
disassociates, just do a no-loss reset.
* Set sc_beacons=1 in STA mode. During a reset, the beacon programming
isn't done. (It's likely I need to set sc_syncbeacons during a hang
reset, but I digress.) Thus after a reset, there's no beacon timer
programming to send a BMISS interrupt if beacons aren't heard ..
thus if the AP disappears, you won't get notified and you'll have to
reset your interface.
This hasn't yet fixed all of the hangs that I've seen when debugging
spectral scan, but it's certainly reduced the hang frequency and it
should improve general STA stability in very noisy environments.
Tested:
* AR9280, STA mode, spectral scan off/on
PR: kern/175227
when an interface is going down.
Right now it's quite possible (but very unlikely!) that ath_reset()
or similar is called, leading to a beacon config call, in parallel with
the last VAP being destroyed.
This likely should be fixed by making sure the bmiss/bstuck/watchdog
taskqueues are canceled whenever the last VAP is destroyed.
