possible to exhaust and garble stack with a packet that contains a couple
of hundreds nested encapsulation levels.
Submitted by: Ming Fu <fming@borderware.com>
Reviewed by: rwatson
PR: kern/85320
- Add a mutex to the softc and use it to protect the softc and device
hardware.
- Setup interrupt handler after attaching device to network stack.
- Use device_set_desc() rather than device_quiet() plus a manual printf
that simulates the normal probe printf.
- Axe next_sbni_unit and instead just leave room for two sbni devices for
each bus attachment.
- Don't bzero the already-zero'd softc.
- Add a detach method to the PCI driver.
- Add a lock to protect the list of available devices used to chain
interrupt handlers for dual port ISA cards.
- Remove unused watchdog routine.
- If if_alloc() fails, make sbni_attach() return an error rather than
panic'ing.
- Consolidate code to free bus resources into sbni_release_resources().
- Clear IFF_DRV_RUNNING|OACTIVE in stop() routine instead of in callers.
- Let ether_ioctl() handle SIOCSIFMTU.
and stable@. It also is a driver for an older non-802.11 wireless PC card
that is quite slow in comparison to say, wi(4). I know Warner wants this
driver axed as well.
- Add a mutex to the softc and use it to lock the softc and device hardware.
- Use a private timer to replace if_watchdog/if_timer.
- Use if_printf() rather than if_xname.
- Setup interrupt handler after ether_ifattach().
current@ and stable@ for the locking patches. The driver can always be
revived if someone tests it.
This driver also sleeps in its if_init routine, so it likely doesn't really
work at all anyway in modern releases.
- Add a mutex to the softc and use it to protect the softc and device
hardware.
- Setup interrupt handler after interface attach.
- Retire 'unit' from softc and use if_printf() instead.
- Don't frob IFF_UP in the driver.
- Use callout_() rather than timeout() and untimeout().
- Add a mutex to the softc and use it to protect the softc and device
hardware.
- Setup interrupt handler after ether_ifattach().
- Use a private timer instead of if_timer/if_watchdog.
- Retire arl_unit from the softc and use if_printf() and device_printf()
instead.
Note that the unpatched driver in 6.x and later does not work with the
hardware, so the one person who had volunteered to test the patch wasn't
able to test it.
dispatched without Giant, and add NETISR_FORCEQUEUE, which allows specific
netisr handlers to always be dispatched via a queue (deferred). Mark the
usb and if_ppp netisr handlers as NETISR_FORCEQUEUE, and explicitly
acquire Giant in those handlers.
Previously, any netisr handler not marked NETISR_MPSAFE would necessarily
run deferred and with Giant acquired. This change removes Giant
scaffolding from the netisr infrastructure, but NETISR_FORCEQUEUE allows
non-MPSAFE handlers to continue to force deferred dispatch so as to avoid
lock order reversals between their acqusition of Giant and any calling
context.
It is likely we will be able to remove NETISR_FORCEQUEUE once
IFF_NEEDSGIANT is removed, as non-MPSAFE usb and if_ppp drivers will no
longer be supported.
Reviewed by: bz
MFC after: 1 month
X-MFC note: We can't remove NETISR_MPSAFE from stable/7 for KPI reasons,
but the rest can go back.
soun->sun_path isn't a null-terminated string. As UNIX(4) states, "the
terminating NUL is not part of the address." Since strlcpy has to return
"the total length of the string [it] tried to create," it walks off the end
of soun->sun_path looking for a \0.
This reverts r105332.
Reported by: Ryan Stone
disabled if one (or more) of the member interfaces does not support it. Always
turn off LRO since we can not bridge a combined frame.
Tested by: Stefan Lambrev
generating an RTM_MISS for every IP packet forwarded making user space
routing daemons unhappy.
PR: kern/123621, kern/124540, kern/122338
Reported by: Paul <paul gtcomm.net>, Mike Tancsa <mike sentex.net> on net@
Tested by: Paul and Mike
Reviewed by: andre
MFC after: 3 days
code is believed to be MPSAFE, and leaving aside the IPv6 route cache in
forwarding, Giant appears not to adequately synchronize the data structures
in the input or forwarding paths.
ceiling as a fraction of the kernel map's size rather than an absolute
quantity. Thus, scaling of the kmem map's size will be automatic with
changes to the kernel map's size.
datagram-only protocols, such as UDP. This version removes use of
sblock(), which is not required due to an inability to interlace data
improperly with datagrams, as well as avoiding some of the larger loops
and state management that don't apply on datagram sockets.
This is experimental code, so hook it up only for UDPv4 for testing; if
there are problems we may need to revise it or turn it off by default,
but it offers *significant* performance improvements for threaded UDP
applications such as BIND9, nsd, and memcached using UDP.
Tested by: kris, ps
there still being some well-known races in mld6 and nd6, running with
Giant over the netisr handler provides little or not additional
synchronization that might cause mld6 and nd6 to behave better.
already commited but with a wrong msleep variant and then
backed out. Note that this changes the semantic a little
as msleep_spin does not let us to specify priority after
wakeup.
Approved by: wkoszek, cognet
Approved by: kib (mentor)
ATM Tx/Rx checksum offload is supported but TSO and jumbo frame is
not yet supported. Because these newer controllers use different
descriptor formats, a flag RL_FLAG_DESCV2 flag was introduced to
handle that case in Tx/Rx handler. Also newer controllers seems to
require to not touch 'enable Tx/Rx bit' in RL_CPLUS_CMD register
so don't blindly try to set that bits.
Note, it seems that there is still power-saving related issue where
driver fails to attach PHY. Rebooting seems to fix that issue but
number of required reboots varys.
Many thanks to users that helped during developement. I really
appreciate their patient and test/feedbacks.
a dedicated flag that represents controller capabilities/events.
This will simplify many part of code that requires different
workaround for each controller revisions and will enhance
readability.
While I'm here move PHY wakeup code up before mii_phy_probe() which
seems to help to wake PHY in some cases.
RL_TXCFG register to identify a device in device probe. Reflect the
fact by modifing device description with general ethernet
controller family.
Note, rl_basetype in struct rl_type is not used and the more
detailed information is provided with rl_hwrev structure.
Previously we reused the space in the request buffer after the request
header to hold config pages during a transaction. This does not work when
reading large pages however. Also, we were already malloc'ing a buffer to
do a copyin/copyout w/o holding locks that was then copied into/out of the
request buffer. Instead, go ahead and use bus dma to alloc a buffer for
each config page request (and RAID actions that have an associated
ActionSGE). This results in fewer data copies and allows for larger sized
requests. For now the maximum size of a request is arbitrarily limited to
16 MB.
MFC after: 2 weeks
locally configured. This is more in line with the behaviour of other popular
bridging implementations and makes bridges more predictable after reboots for
example.
Reviewed by: thompsa
MFC after: 1 week
rather than write locking: while we need to maintain a valid reference
to the inpcb and fix its state, no protocol layer state is modified
during an IPv4 UDP receive -- there are only changes at the socket
layer, which is separately protected by socket locking.
While parallel concurrent receive on a single UDP socket is currently
relatively unusual, introducing read locking in the transmit path,
allowing concurrent receive and transmit, will significantly improve
performance for loads such as BIND, memcached, etc.
MFC after: 2 months
Tested by: gnn, kris, ps
