executed by inactive methods, must be repeated on reclaim. In
particular, unlink and free sillyrenamed vnode both on inactivation
and reclaim.
Reported and tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Approved by: re (gjb)
lists must be functional.
Reported by: Daniel Engberg <daniel.engberg.lists@pyret.net>,
Guy Yur <guyyur@gmail.com>
Tested by: Guy Yur <guyyur@gmail.com>
Sponsored by: The FreeBSD Foundation
Approved by: re (gjb), including the KBI change
pci_if.
This allows bhnd(4) to manage per-device state (such as per-core
pmu/clock refcounting) on behalf of subclass driver instances.
Approved by: re (gjb), adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D6959
The delta between SENTRY5 and BCM was already small due to BCM being
derived from SENTRY5; re-integrating the two avoids the maintenance
overhead of keeping them both in sync with bhnd(4) changes.
- Re-integrate minor SENTRY5 deltas in bcm_machdep.c
- Modify uart_cpu_chipc to allow specifying UART debug/console flags via
kenv and device hints.
- Switch SENTRY5 to std.broadcom
- Enabled CFI flash support for SENTRY5
Reviewed by: Michael Zhilin <mizkha@gmail.com> (Broadcom MIPS support)
Approved by: re (gjb), adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D6897
Replaces use of DEVICE_IDENTIFY with explicit enumeration of chipc
child devices using the chipc capability structure.
This is a precursor to PMU support, which requires more complex resource
assignment handling than achievable with the static device name-based
hints table.
Reviewed by: Michael Zhilin <mizkha@gmail.com> (Broadcom MIPS support)
Approved by: re (gjb), adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D6896
Replace m_getcl() with m_get2(); this fixes 'frame too long'
messages for frames, which are longer than MCLBYTES
(can be easily triggered when A-MSDU is used).
Tested with RTL8188CUS (AP) and RTL8188EU (STA).
Approved by: re (marius)
Free data buffers every time when device is stopped, not when
it is detached; they are allocated at the initialization stage.
How-to-reproduce:
1) ifconfig wlan0 create wlandev urtwn0 up
2) vmstat -m | grep USBdev
3) service netif restart
4) vmstat -m | grep USBdev
Also, remove usbd_transfer_drain() call; it is already called by
usbd_transfer_unsetup().
Tested with RTL8188CUS, STA mode.
Approved by: re (marius)
The new 'machdep.disable_msix_migration' tunable can be set to 1 to
disable migration of MSI-X interrupts.
Xen versions prior to 4.6.0 do not properly handle updates to MSI-X
table entries after the initial write. In particular, the operation
to unmask a table entry after updating it during migration is not
propagated to the "real" table for passthrough devices causing the
interrupt to remain masked. At least some systems in EC2 are
affected by this bug when using SRIOV. The tunable can be set in
loader.conf as a workaround.
Submitted by: Jeremiah Lott <jlott@averesystems.com> (original patch)
Approved by: re (marius)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D6947
sys/sys/bitstring.h
Fix a rounding calculation that could undersize a bitstring on
32-bit platforms.
tests/sys/sys/bitstring_test.h
Add a test for bitstr_size
PR: 210260
Reported by: Mark Millard
Reviewed by: gibbs
Approved by: re (marius)
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D6848
teardown of VNETs once pf(4) has been shut down.
Properly split resources into VNET_SYS(UN)INITs and one time module
loading.
While here cover the INET parts in the uninit callpath with proper
#ifdefs.
Approved by: re (gjb)
Obtained from: projects/vnet
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
borrow pf's lock, and also make sure pflog goes after pf is gone
in order to avoid callouts in VNETs to an already freed instance.
Reported by: Ivan Klymenko, Johan Hendriks on current@ today
Obtained from: projects/vnet
Sponsored by: The FreeBSD Foundation
MFC after: 13 days
Approved by: re (gjb)
proper virtualisation, teardown, avoiding use-after-free, race conditions,
no longer creating a thread per VNET (which could easily be a couple of
thousand threads), gracefully ignoring global events (e.g., eventhandlers)
on teardown, clearing various globally cached pointers and checking
them before use.
Reviewed by: kp
Approved by: re (gjb)
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D6924
use. Update comments regarding the spare fields in struct inpcb.
Bump __FreeBSD_version for the changes to the size of the structures.
Reviewed by: gnn@
Approved by: re@ (gjb@)
Sponsored by: Chelsio Communications
While reading the code, I noticed that shm_read() returns without unlocking
foffset and rangelock if mac_posixshm_check_read() rejects the read.
Reviewed by: kib, jhb, rwatson
Approved by: re (gjb)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D6927
The GEOM disk d_mtx is only acquired on disk creation and destruction.
It is a good candidate for replacement with a pool mutex. This eliminates
the mutex initialization and teardown and the mutex and name variables
themselves from struct disk.
sys/geom/geom_disk.h:
Take d_mtx and d_mtx_name out of struct disk.
sys/geom/geom_disk.c:
Use mtx_pool_lock() and mtx_pool_unlock() to guard the disk
initialization state instead of a dedicated mutex.
This allows removing the initialization and destruction of
d_mtx.
sys/sys/param.h:
Bump __FreeBSD_version to 1100119 for the change to struct disk.
Suggested by: jhb
Sponsored by: Spectra Logic
Approved by: re (gjb)
this code in the userland stack, it could result in a loop. This happened on iOS.
However, I was not able to reproduce this when using the code in the kernel.
Thanks to Eugen-Andrei Gavriloaie for reporting the issue and proving detailed
information to find the root of the problem.
Approved by: re (gjb)
MFC after: 1 week
If the allocation attempt fails, we may otherwise VM_WAIT after a failed
attempt to reclaim contiguous memory in the requested range. After r297466,
this results in the thread going to sleep, causing a hang during boot.
Reviewed by: jkim, kib
Approved by: re (gjb)
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D6945
waiters exist, same as for vm_page_xunbusy(). If previous value of
busy_lock was VPB_SINGLE_EXCLUSIVER, no waiters existed and wakeup is
not needed.
Move common code from vm_page_xunbusy_maybelocked() and
vm_page_xunbusy_hard() to vm_page_xunbusy_locked().
Reviewed by: alc
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Approved by: re (gjb)
getzfsvfs() called vfs_busy() in the waiting mode while having a hold on
a pool (via a call to dmu_objset_hold). In other words,
dp_config_rwlock was held in the shared mode while a thread could be
sleeping in vfs_busy().
The pool's txg sync thread needs to take dp_config_rwlock in the
exclusive mode for some actions, e.g., for executing sync tasks. If the
sync thread gets blocked, then any thread waiting for its sync task to
get executed is also blocked. Which, in turn, could mean that
vfs_busy() will keep waiting indefinitely.
The solution is to use vfs_ref() in the locked section and to call
vfs_busy() only after dropping other locks.
Note that a reference on a struct mount object does not prevent an
associated zfsvfs_t object from being destroyed. So, we have to be
careful to operate only on the struct mount object until we successfully
vfs_busy it.
Approved by: re (gjb)
MFC after: 2 weeks
vcxgbe/vcxl interfaces and retire the 'n' interfaces. The main
cxgbe/cxl interfaces and tunables related to them are not affected by
any of this and will continue to operate as usual.
The driver used to create an additional 'n' interface for every
cxgbe/cxl interface if "device netmap" was in the kernel. The 'n'
interface shared the wire with the main interface but was otherwise
autonomous (with its own MAC address, etc.). It did not have normal
tx/rx but had a specialized netmap-only data path. r291665 added
another set of virtual interfaces (the 'v' interfaces) to the driver.
These had normal tx/rx but no netmap support.
This revision consolidates the features of both the interfaces into the
'v' interface which now has a normal data path, TOE support, and native
netmap support. The 'v' interfaces need to be created explicitly with
the hw.cxgbe.num_vis tunable. This means "device netmap" will not
result in the automatic creation of any virtual interfaces.
The following tunables can be used to override the default number of
queues allocated for each 'v' interface. nofld* = 0 will disable TOE on
the virtual interface and nnm* = 0 to will disable native netmap
support.
# number of normal NIC queues
hw.cxgbe.ntxq_vi
hw.cxgbe.nrxq_vi
# number of TOE queues
hw.cxgbe.nofldtxq_vi
hw.cxgbe.nofldrxq_vi
# number of netmap queues
hw.cxgbe.nnmtxq_vi
hw.cxgbe.nnmrxq_vi
hw.cxgbe.nnm{t,r}xq{10,1}g tunables have been removed.
--- tl;dr version ---
The workflow for netmap on cxgbe starting with FreeBSD 11 is:
1) "device netmap" in the kernel config.
2) "hw.cxgbe.num_vis=2" in loader.conf. num_vis > 2 is ok too, you'll
end up with multiple autonomous netmap-capable interfaces for every
port.
3) "dmesg | grep vcxl | grep netmap" to verify that the interface has
netmap queues.
4) Use any of the 'v' interfaces for netmap. pkt-gen -i vcxl<n>... .
One major improvement is that the netmap interface has a normal data
path as expected.
5) Just ignore the cxl interfaces if you want to use netmap only. No
need to bring them up. The vcxl interfaces are completely independent
and everything should just work.
---------------------
Approved by: re@ (gjb@)
Relnotes: Yes
Sponsored by: Chelsio Communications
This patch addes missing implementation of BHND_BUS_RESET_CORE function for BCMA.
The reset procedure is very simple: enable reset mode, stop clocking,
enable clocking & force clock gating, disable reset mode, stop clock gating.
Tested:
* (michael) Tested on ASUS RT-N53 for enabling/reset USB core
Submitted by: Michael Zhilin <mizhka@gmail.com>
Approved by: re (gjb)
We also need to consider the size of large firmware commands in iwm_alloc_tx_ring(),
in the dma tag creation, when qid == IWM_MVM_CMD_QUEUE. The old code apparently
only allocated a 2KB (MCLBYTES) sized buffer when it actually expected 4KB.
Submitted by: Imre Vadasz <imre@vdsz.com>
Approved by: re (gjb)
Differential Revision: https://reviews.freebsd.org/D6824
(Together with other iwm(4) memory leak fixes) Memory leakage in M_DEVBUF
is now at ca. 2KB for each iwm(4) module load/unload cycle.
Submitted by: Imre Vadasz <imre@vdsz.com>
Approved by: re (gjb)
Obtained from: DragonflyBSD git eaf551a1d464c643e98ce5781971dd32124e9af1
Differential Revision: https://reviews.freebsd.org/D6819
* When bus_dmamem_alloc is used, the bus_dmamap_t is usually set to NULL, so
we were never actually freeing any dma memory allocations done via
iwm_dma_contig_alloc(). So we should check dma->vaddr instead of dma->map here.
* Also, the dmamap is actually supposed to be invalidated as part of
bus_dmamem_free(), so bus_dmamap_destroy() is never needed here.
Submitted by: Imre Vadasz <imre@vdsz.com>
Approved by: re (gjb)
Obtained from: DragonflyBSD git ef2b29a7ba6ca8a9d2c82ab591c0622227ff84cb
ic_macaddr is only used for the initial mac address provided by NVM. We should
rather use vap->iv_myaddr when vap != NULL, to allow the MAC address
to be changed later with ifconfig(8).
Submitted by: Imre Vadasz <imre@vdsz.com>
Reviewed by: avos
Approved by: re (gjb)
Obtained from: DragonflyBSD git 4aee7a78275676d22d14c04177bd0c9377d91478
Differential Revision: https://reviews.freebsd.org/D6743
I keep asking myself "what do these fields mean" and so now I've clarified
it for myself.
Tested:
* Reading the comments, going "a-ha!" a couple times.
Approved by: re (gjb)
That way timers can finish cleanly and we do not gamble with a DELAY().
Reviewed by: gnn, jtl
Approved by: re (gjb)
Obtained from: projects/vnet
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D6923
Timewait code does a proper cleanup after itself.
Reviewed by: gnn
Approved by: re (gjb)
Obtained from: projects/vnet
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D6922
Mark the pipe() system call as COMPAT10.
As of r302092 libc uses pipe2() with a zero flags value instead of pipe().
Approved by: re (gjb)
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D6816
As of r302092 libc uses pipe2() with a zero flags value instead of pipe().
Commit with regenerated files and implementation to follow.
Approved by: re (gjb)
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D6816
This will result in lock recursion and is more generally incorrect since
the completion handlers will just reinsert the BIOs into the queue we're
trying to drain.
Reviewed by: imp, ngie
Approved by: re (gjb)
MFC after: 3 weeks
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D6908
There is an order between covered vnode lock and allproc_lock, which
is established by calling mountcheckdirs() while owning the covered
vnode lock. mountcheckdirs() iterates over the processes, protected by
allproc_lock. This order is needed and seems to be not avoidable.
On the other hand, various VM daemons also need to iterate over all
processes, and they lock and unlock user maps. Since unlock of the
user map may trigger processing of the deferred map entries, it causes
vnode locking to occur. Or, when vmspace is freed, dropping references
on the vnode-backed object also lock vnodes. We get reverted order
comparing with the mount/unmount order.
For VM daemons, there is no need to own allproc_lock while we operate
on vmspaces. If the process is held, it serves as the marker for
allproc list, which allows to continue the iteration.
Add _PHOLD_LITE() macro, similar to _PHOLD(), but not causing swap-in
of the kernel stacks. It is used instead of _PHOLD() in vm code,
since e.g. calling faultin() in OOM conditions only exaggerates the
problem.
Modernize comment describing PHOLD.
Reported by: lists@yamagi.org
Tested by: pho (previous version)
Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
MFC after: 3 week
Approved by: re (gjb)
Differential revision: https://reviews.freebsd.org/D6679
after the underlying device went away.
The problem was that callers who queue the GEOM resize provider
event didn't check to make sure that the provider had not been
withered. For the other equivalent case, g_new_provider_event(),
the code checks to see whether the provider has been withered
before queueing a g_new_provider_event() to the event thread.
In some cases, a resize provider event would come through after
the provider had been withered and all of the existing consumers
had been orphaned. When the resize event triggered a taste of
the provider, that would attach a new consumer to the now
withered provider. The wither washer (g_wither_washer() would
never be able to completely tear down the GEOM because of the
consumers that were hanging around.
The solution was to check the G_PF_WITHER provider flag before
queueing the g_resize_provider_event(), and add an assert to
g_resize_provider_event() to insure that it isn't called on a
withered provider.
sys/geom/geom_subr.c:
In g_resize_provider(), don't try to continue if the
G_PF_WITHER flag is set.
In g_resize_provider_event(), add an assert that the
G_PF_WITHER flag is not set.
In g_access(), if a provider has an error, print out the
name of the provider with the error.
Sponsored by: Spectra Logic
Approved by: re (marius)
MFC after: 3 days
some fields to match the order in the struct. Especially needed
if_pf_kif to do pf(4) VNET debugging.
Approved by: re (marius)
Obtained from: projects/vnet
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
uncategorised reason. We need to read the fault address register before
enabling interrupts as the interrupt handler may cause this register to
change.
Approved by: re (marius, kib)
Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
