TCP timers as a single timer, but retain the API changes necessary to
reintroduce this change. This will back out the source of at least two
reported problems: lock leaks in certain timer edge cases, and TCP timers
continuing to fire after a connection has closed (a bug previously fixed and
then reintroduced with the timer rewrite).
In a follow-up commit, some minor restylings and comment changes performed
after the TCP timer rewrite will be reapplied, and a further change to allow
the TCP timer rewrite to be added back without disturbing the ABI. The new
design is believed to be a good thing, but the outstanding issues are
leading to significant stability/correctness problems that are holding
up 7.0.
This patch was generated by silby, but is being committed by proxy due to
poor network connectivity for silby this week.
Approved by: re (kensmith)
Submitted by: silby
Tested by: rwatson, kris
Problems reported by: peter, kris, others
that can lead to a panic when the stick is yanked.
- make sure that zyd_attach() returns 0 or errno.
Submitted by: Weongyo Jeong <weongyo.jeong@gmail.com>
Reported by: Ted Lindgreen <ted@tednet.nl>
Reviewed by: sam
Approved by: re (blanket wireless)
- ng_h4(4) MPSAFE
- ng_ppp(4) MPSAFE + MFC
- zyd(4) added
- cpufreq(4) in GENERIC
Modified release notes:
- cached(8) renamed to nscd(8), also moved entry to now correct place
- Camellia is now supported in geli(8) as well
Approved by: re (blanket)
with the INTR_FILTER-enabled MI code. Basically this consists of
registering an interrupt controller (of which there can be multiple
and optionally different ones either per host-to-foo bridge or shared
amongst host-to-foo bridges in any one machine) along with an interrupt
vector as specific argument for all the interrupt vectors used by a
given host-to-foo bridge (roughly similar to registering interrupt
sources on amd64 and i386), providing functions to enable, clear and
disable the interrupts of the children beneath the bridge.
This also includes:
- No longer entering a critical section in tl0_intr() and tl1_intr()
for executing interrupt handlers but rather let the handlers enter
it themselves so in the case of intr_event_handle() we don't enter
a nested critical section.
- Adding infrastructure for binding delivery of interrupt vectors to
specific CPUs which later on can be interfaced with the code from
amd64/i386 for binding interrupts to specific CPUs.
- Getting rid of the wrapper hack introduced along the lines of the
API changes for INTR_FILTER which as a side-effect caused interrupts
associated with ithread handlers only to get the elevated priority
of those associated with filters ("fast handlers") (this removes the
hack also in the non-INTR_FILTER case).
- Disabling (by not clearing) an interrupt in the interrupt controller
until all associated handlers have been executed, which is crucial
for the typical locking strategy of NIC drivers in order to work
correctly in case of shared interrupts. This was a more or less
theoretical problem on sparc64 though, as shared interrupts are
rather uncommon there except for the on-board SCCs and UARTs.
Note that due to the behavior of at least of some of the interrupt
controllers used on sparc64 an enable+EOI instead of a disable+EOI
approach (as implied by the INTR_FILTER MI code and implemented on
other architectures) is used as the latter can cause lost interrupts
or in the worst case interrupt starvation.
o Correct a typo in sbus_alloc_resource() which caused (pass-through)
allocations to only work down to the grandchildren of the bus, which
wasn't a real problem so far as we don't support any devices which are
great-grandchildren or greater of a U2S bridge, yet.
o In fhc(4) use bus_{read,write}_4() instead of bus_space_{read,write}_4()
in order to get rid of sc_bh and sc_bt in the fhc_softc. Also get rid
of some other unneeded members in fhc_softc.
Reviewed by: marcel (earlier version)
Approved by: re (kensmith)
o reset ni_inact when ni_inact_reload is changed so we're
assured a valid setting
o never let ni_inact go negative
o add a knob to disable hostap sta idle handling (e.g. so it can be done
by a user application)
o remove bogus reload on associate
Reviewed by: avatar
Approved by: re (blanket wireless)
o update ic_lastdata to reflect time of last outbound frame
o outbound traffic must preempt/cancel bg scanning to avoid delays
This stuff was somehow missed in the initial import.
Reviewed by: thompsa, avatar, sephe (earlier version)
Approved by: re (blanket wireless)
o add ic_extieee to hold the HT40 extension channel number
o add ic_state to track dynamic channel state for DFS
o add flags to mark regulatory channel requirements
o add state defs for DFS/radar support
Reviewed by: avatar
Approved by: re (blanket wireless)
o update 11n definitions to D2.0 spec
o add IEEE80211_CAPINFO_SPECTRUM_MGMT for DFS support
o add CSA ie definition for DFS support
o purge some unused definitions
o correct 802.11 reason and status codes
o correct reason code returned when a sta tries to associate to an
ap operating with WPA/RSN but without a WPA/RSN ie
Reviewed by: thompsa, avatar
Approved by: re (blanket wireless)
device and have had the crypto bits stripped from the 802.11 header
o strip mbuf flags in the rx path before passing up the stack
Reviewed by: thompsa, sephe, avatar
Approved by: re (blanket wireless)
Reported by: phk
- While here, check the unit before calculating the actually number.
This way we can return EINVAL for invalid unit instead of ERANGE.
Approved by: re (kensmith)
The first drop was Beta, this code is expected to be the release version.
Note that this driver code will build in either 6.2 or 7. If you
use the code in 6.2 you will not get TSO or MSI/X support but it will
function in a legacy mode.
Approved by: re
used, rather than the one passed via 'req', which may not reflect a
rewrite. This call to useracc() is redundant to validation performed by
later copyin()/copyout() calls, so there isn't a security issue here,
but this could technically lead to excessive validation of addresses if
the length in newlen is shorter than req.newlen.
Approved by: re (kensmith)
Reviewed by: jhb
Submitted by: Constantine A. Murenin <cnst+freebsd@bugmail.mojo.ru>
Sponsored by: Google Summer of Code 2007
When any PnP device exists, isa_release_resource() is called with no
activated resource. So a bushandle is not allocated yet.
Approved by: re (kensmith)
a number in human-readable form is converted to int64_t, for example:
123b -> 123
10k -> 10240
16G -> 17179869184
First version submitted by: Eric Anderson <anderson@freebsd.org>
Approved by: re (bmah)
can easily block in bread(), and then there was nothing to prevent the
static buffer (nambuf_{ptr,len,last_id}) being clobbered by another
thread.
The effects of the bug seem to have been limited to failed lookups and
mangled names in readdir(), since Giant locking provides enough
serialization to prevent concurrent calls to the functions that access
the buffer. They were very obvious for multiple concurrent tree walks,
especially with a small cluster size.
The bug was introduced in msdosfs_conv.c 1.34 and associated changes,
and is in all releases starting with 5.2.
The fix is to allocate the buffer as a local variable and pass around
pointers to it like "_r" functions in libc do. Stack use from this
is large but not too large. This also fixes a memory leak on module
unload.
Reviewed by: kib
Approved by: re (kensmith)
the callout_lock spin lock and the sleepqueue spin locks. In the fix,
callout_drain() has to drop the callout_lock so it can acquire the
sleepqueue lock. The state of the callout can change while the
callout_lock is held however (for example, it can be rescheduled via
callout_reset()). The previous code assumed that the only state change
that could happen is that the callout could finish executing. This change
alters callout_drain() to effectively restart and recheck everything
after it acquires the sleepqueue lock thus handling all the possible
states that the callout could be in after any changes while callout_lock
was dropped.
Approved by: re (kensmith)
Tested by: kris
