| Commit message (Collapse) | Author | Age | Files | Lines |
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ok dlg@ tobhe@
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this means packets are consistently counted in one place, unlike the
many and various ways that drivers thought they should do it.
ok mpi@ deraadt@
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could not be sent either because the dma mapping failed or because
m_defrag failed. Those errors are accounted as oerrors. dlg@ agrees.
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version. Based on a very old diff from brad@, tested by me and David Hill
OK kettenis@
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there are two things shared between the network stack and drivers
in the send path: the send queue and the IFF_OACTIVE flag. the send
queue is now protected by a mutex. this diff makes the oactive
functionality mpsafe too.
IFF_OACTIVE is part of if_flags. there are two problems with that.
firstly, if_flags is a short and we dont have any MI atomic operations
to manipulate a short. secondly, while we could make the IFF_OACTIVE
operates mpsafe, all changes to other flags would have to be made
safe at the same time, otherwise a read-modify-write cycle on their
updates could clobber the oactive change.
instead, this moves the oactive mark into struct ifqueue and provides
an API for changing it. there's ifq_set_oactive, ifq_clr_oactive,
and ifq_is_oactive. these are modelled on ifsq_set_oactive,
ifsq_clr_oactive, and ifsq_is_oactive in dragonflybsd.
this diff includes changes to all the drivers manipulating IFF_OACTIVE
to now use the ifsq_{set,clr_is}_oactive API too.
ok kettenis@ mpi@ jmatthew@ deraadt@
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You never need <netinet/ip_var.h> nor <netinet/in_systm.h>.
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the code is refactored so the IFQ macros call newly implemented ifq
functions. the ifq code is split so each discipline (priq and hfsc
in our case) is an opaque set of operations that the common ifq
code can call. the common code does the locking, accounting (ifq_len
manipulation), and freeing of the mbuf if the disciplines enqueue
function rejects it. theyre kind of like bufqs in the block layer
with their fifo and nscan disciplines.
the new api also supports atomic switching of disciplines at runtime.
the hfsc setup in pf_ioctl.c has been tweaked to build a complete
hfsc_if structure which it attaches to the send queue in a single
operation, rather than attaching to the interface up front and
building up a list of queues.
the send queue is now mutexed, which raises the expectation that
packets can be enqueued or purged on one cpu while another cpu is
dequeueing them in a driver for transmission. a lot of drivers use
IFQ_POLL to peek at an mbuf and attempt to fit it on the ring before
committing to it with a later IFQ_DEQUEUE operation. if the mbuf
gets freed in between the POLL and DEQUEUE operations, fireworks
will ensue.
to avoid this, the ifq api introduces ifq_deq_begin, ifq_deq_rollback,
and ifq_deq_commit. ifq_deq_begin allows a driver to take the ifq
mutex and get a reference to the mbuf they wish to try and tx. if
there's space, they can ifq_deq_commit it to remove the mbuf and
release the mutex. if there's no space, ifq_deq_rollback simply
releases the mutex. this api was developed to make updating the
drivers using IFQ_POLL easy, instead of having to do significant
semantic changes to avoid POLL that we cannot test on all the
hardware.
the common code has been tested pretty hard, and all the driver
modifications are straightforward except for de(4). if that breaks
it can be dealt with later.
ok mpi@ jmatthew@
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Note that pseudo-drivers not using if_input() are not affected by this
conversion.
ok mikeb@, kettenis@, claudio@, dlg@
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have any direct symbols used. Tested for indirect use by compiling
amd64/i386/sparc64 kernels.
ok tedu@ deraadt@
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ok dlg@
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after discussions with beck deraadt kettenis.
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drivers) activate functions at DVACT_RESUME time do not need to do
so, since their PHYs are repaired by IFF_UP.
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kernel resumes normal (non-cold, able to run processes, etc) operation.
Previously we were relying on specific DVACT_RESUME op's in drivers
creating callback/threads themselves, but that has become too common,
indicating the need for a built-in mechanism.
ok dlg kettenis, tested by a sufficient amount of people
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from kimberley manning
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don't have to. Just remove these include lines.
Compiled on amd64 i386 sparc64; OK henning@ mikeb@
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Found by haesbaert@.
ok haesbaert@ deraadt@
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FXP_REV_82550_C with server extensions.
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Change fxp_resume to avoid the nested splnet call inside fxp_init
altogether. Initial diff by Jan Klemkow; Tested and OK bluhm.
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ok matthew@ tedu@, also eyeballed by at least krw@ oga@ kettenis@ jsg@
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traversal code to suspend/resume
ok oga kettenis blambert
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DVACT_SUSPEND, therefore DVACT_QUIECE can do standard sleeping operations
to get ready.
Discussed quite a while back with kettenis and jakemsr, oga suddenly needed
it as well and wrote half of it, so it was time to finish it.
proofread by miod.
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Then it is possible for fxp_powerhook to use it.
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ok krw@
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operations in the detach function in the right order. Also ensure that the
interrupt handlers not trust registers that go away.
read over very carefully by dms, tested by me
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This was in the diff Brad sent to tech@ and had tested
by others and should have been in my previous commit, but I was
working from and testing an earlier version of the diff. I've
retested with multicast/promisc on my dual 82550.
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naddy@ and several tech@ readers. From Brad.
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these cases the xxstop function is a bit more complicated and has a flag of
some sort, but the use of that flag does not matter; DMA is already ceased
ok dlg
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make it consistent with other drivers. No functional change. From Brad.
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from the individual drivers now that ether_ioctl() handles this.
Shrinks the i386 kernels by..
RAMDISK - 2176 bytes
RAMDISKB - 1504 bytes
RAMDISKC - 736 bytes
Tested by naddy@/okan@/sthen@/brad@/todd@/jmc@ and lots of users.
Build tested on almost all archs by todd@/brad@
ok naddy@
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Move calling ether_ioctl() from the top of the ioctl function, which
at the moment does absolutely nothing, to the default switch case.
Thus allowing drivers to define their own ioctl handlers and then
falling back on ether_ioctl(). The only functional change this results
in at the moment is having all Ethernet drivers returning the proper
errno of ENOTTY instead of EINVAL/ENXIO when encountering unknown
ioctl's.
Shrinks the i386 kernels by..
RAMDISK - 1024 bytes
RAMDISKB - 1120 bytes
RAMDISKC - 832 bytes
Tested by martin@/jsing@/todd@/brad@
Build tested on almost all archs by todd@/brad@
ok jsing@
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Really just the low-hanging fruit of (hopefully) forthcoming timeout
conversions.
ok art@, krw@
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as 8-bit reads/writes even though they are 16-bit. This can cause the
respective interfaces to lock up until the system is hard rebooted. Having
the driver read/write to these registers as 16-bit entities resolves the
instability.
From mickey@
ok krw@ sthen@ dlg@
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- Only clear the watchdog timer if there are no more packets to
process otherwise rearm the timer.
From mickey@
Tested by krw@, mikeb@ and brad@
ok dlg@
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Brings fxp into line with many other drivers.
From brad@, tested by martin@, thib@, pyr@, mk@ and Johan M:son
Lindman.
ok martin@
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