- Don't use a single big DMA block for all rings. Create separate
DMA area for each ring instead. Currently the following DMA
areas are created:
Event ring, standard RX ring, jumbo RX ring, RX return ring,
hardware MAC statistics and producer/consumer status area.
For Tigon II, mini RX ring and TX ring are additionally created.
- Added missing bus_dmamap_sync(9) in various TX/RX paths.
- TX ring is no longer created for Tigon 1 such that it saves more
resources on Tigon 1.
- Data sheet is not clear about alignment requirement of each ring
so use 32 bytes alignment for normal DMA area but use 64 bytes
alignment for jumbo RX ring where the extended RX descriptor
size is 64 bytes.
- For each TX/RX buffers use separate DMA tag(e.g. the size of a
DMA segment, total size of DMA segments etc).
- Tigon allows separate DMA area for event producer, RX return
producer and TX consumer which is really cool feature. This
means TX and RX path could be independently run in parallel.
However ti(4) uses a single driver lock so it's meaningless
to have separate DMA area for these producer/consumer such that
this change creates a single status DMA area.
- It seems Tigon has no limits on DMA address space and I also
don't see any problem with that but old comments in driver
indicates there could be issues on descriptors being located in
64bit region. Introduce a tunable, dev.ti.%d.dac, to disable
using 64bit DMA in driver. The default is 0 which means it would
use full 64bit DMA. If there are DMA issues, users can disable
it by setting the tunable to 0.
- Do not increase watchdog timer in ti_txeof(). Previously driver
increased the watchdog timer whenever there are queued TX frames.
- When stat ticks is set to 0, skip processing ti_stats_update(),
avoiding bus_dmamap_sync(9) and updating if_collisions counter.
- MTU does not include FCS bytes, replace it with
ETHER_VLAN_ENCAP_LEN.
With these changes, ti(4) should work on PAE environments.
Many thanks to Jay Borkenhagen for remote hardware access.
Before r215687, if some withered geom or provider could not be destroyed,
g_event thread went to sleep for 0.1s before retrying. After that change
it is just restarting immediately. r227009 made orphaned (withered) provider
to not detach immediately, but only after context switch. That made loop
inside g_event thread infinite on UP systems without PREEMPTION.
To address original problem with possible dead lock addressed by r227009
we have to fix r215687 change first, that needs some time to think and test.
have administrators control them. ti(4) provides a character
device to control various other features of driver via ioctls but
users had to write their own code to manipulate these parameters.
It seems some default values for these parameters are not optimal
on today's system but leave it as it was and let administrators
change them. The following parameters could be changed:
dev.ti.%d.rx_coal_ticks
dev.ti.%d.rx_max_coal_bds
dev.ti.%d.tx_coal_ticks
dev.ti.%d.tx_max_coal_bds
dev.ti.%d.tx_buf_ratio
dev.ti.%d.stat_ticks
The interface has to be brought down and up again before a change
takes effect.
ti(4) controller supports hardware MAC counters with additional
DMA statistics. So it's doable to export these counters via
sysctl interface. Unfortunately, these counters are cumulative
such that driver have to either send an explicit clear command to
controller after extracting them or have to maintain internal
counters to get actual changes. Neither look good to me so
counters were not exported via sysctl.
Pre-allocate the memory in device attach time. While I'm here
remove unnecessary reassignment of error variable as it was already
initialized. Also added a missing driver lock in TIIOCSETTRACE
handler.
it can be used by in-kernel consumers.
- Make kern_posix_fallocate() public.
- Use kern_posix_fadvise() and kern_posix_fallocate() to implement the
freebsd32 wrappers for the two system calls.
952 separate intent logs should be obvious in 'zpool iostat' output
1337 `zpool status -D' should tell if there are no DDT entries
References:
https://www.illumos.org/issues/952https://www.illumos.org/issues/1337
Obtained from: Illumos (issues 952, 1337; changesets 13384, 13432)
MFC after: 1 week
iteration over the fdsets, kern_select() limits the length of the
fdsets copied in by the last valid file descriptor index. If any bit
is set in a mask above the limit, current implementation ignores the
filedescriptor, instead of returning EBADF.
Fix the issue by scanning the tails of fdset before entering the
select loop and returning EBADF if any bit above last valid
filedescriptor index is set. The performance impact of the additional
check is only imposed on the (somewhat) buggy applications that pass
bad file descriptors to select(2) or pselect(2).
PR: kern/155606, kern/162379
Discussed with: cognet, glebius
Tested by: andreast (powerpc, all 64/32bit ABI combinations, big-endian),
marius (sparc64, big-endian)
MFC after: 2 weeks
handle splitting input files on a '|'. This greatly
reduces the time taken to process several databases
during the update process.
Additionally add some more debug logging.
only 1 old file to be saved, so fix this. Problem raised in the PR,
but actually required a different solution.
While I'm here, fix a very old off-by-one error causing 1 more file
than specified in daily_accounting_save to be saved because acct.0
was not taken into account (pun intended). Change that, and use a more
thorough method of finding old files to delete. Partly just because this
is the right thing to do, but also to silently fix the extra log that
would have been left behind forever with the previous method.
PR: conf/160848
Submitted by: Andrey Zonov <andrey@zonov.org>
- mvs.4 uses nested '.Bl' tags which appears to confuse man2hwnotes.pl
for hardware note generation
- mps.4 also breaks the build, but I haven't yet identified why
built with -Wundef, as opposed to world.
Additionally, cdefs.h tends to not use indentation for preprocessor
directives, so remove that too.
Pointy hat to: me
This should get the correct memory size even if a 32-bit image is running
on a machine with > 4GB of memory. This can be useful is using a 32-bit
installer on a machine which will eventually run a 64-bit image.
Reviewed by: kmoore
- Improved locking and destruction process to fix crashes.
- Improved "automatic" configuration method to make it consistent and safe
by reading metadata back from all specified paths after writing to one.
- Added provider size check to reduce chance of ordering conflict with
other GEOM classes.
- Added "manual" configuration method without using on-disk metadata.
- Added "add" and "remove" commands to allow manage paths manually.
- Failed paths are no longer dropped from geom, but only marked as FAIL
and excluded from I/O operations.
- Automatically restore failed paths when all others paths are marked
as failed, for example, because of device-caused (not transport) errors.
- Added "fail" and "restore" commands to manually control FAIL flag.
- geom is now destroyed on last path disconnection.
- Added optional Active/Active mode support. Unlike Active/Passive
mode, load evenly distributed between all working paths. If supported by
the device, it allows to significantly improve performance, utilizing
bandwidth of all paths. It is controlled by -A option during creation.
Disabled by default now.
- Improved `status` and `list` commands output.
Sponsored by: iXsystems, inc.
MFC after: 1 month
cp2103 usb-to-serial chip.
- This patch also makes the line status polling asynchronous, to reduce
the time needed to change the GPIO pins.
Submitted by: JD Louw
MFC after: 1 week
