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
I wrote these to test amd64 asm functions that used
maxss, maxsd, minss, and minsd, but it turns out that
those instructions don't handle NaNs and signed zero
in the same way as fmin() and fmax() are required to,
so we're stuck with the C versions for now.
[/] root@ed-exigent>ldd `which httpd`
ldd: /usr/local/sbin/httpd: can't read program header
ldd: /usr/local/sbin/httpd: not a dynamic executable
But...
[/] root@ed-exigent>LD_32_TRACE_LOADED_OBJECTS==1 `which httpd`
libm.so.4 => /lib32//libm.so.4 (0x280c8000)
libaprutil-1.so.2 => /usr/local/lib/libaprutil-1.so.2 (0x280de000)
libexpat.so.6 => /usr/local/lib/libexpat.so.6 (0x280f2000)
libiconv.so.3 => /usr/local/lib/libiconv.so.3 (0x28110000)
libapr-1.so.2 => /usr/local/lib/libapr-1.so.2 (0x281fd000)
libcrypt.so.3 => /lib32//libcrypt.so.3 (0x2821d000)
libpthread.so.2 => not found (0x0)
libc.so.6 => /lib32//libc.so.6 (0x28235000)
libpthread.so.2 => /usr/lib32/libpthread.so.2 (0x2830d000)
Added support in ldd(1) for the LD_32_xxx environment variables if
the architecture of the machine is >32 bits. If we ever go to 128
bit architectures this excercise will have to be repeated but thanks
to earlier commits today it will be relative simple.
PR: bin/124906
Submitted by: edwin
Approved by: bde (mentor)
MFC after: 1 week
the main-loop into a seperate function.
Instead of using hardcoded environment variables, define them in a
lookup table.
For the rest, no functionality changes.
Approved by: bde (mentor)
MFC after: 1 week
obsoleted by gpart(8). This avoids the following bugs in fdisk:
- initializing a disk without MBR bogusly emits the error:
fdisk: invalid fdisk partition table found
- initializing a disk with or without MBR bogusly emits either:
fdisk: Class not found
or
fdisk: Geom not found: "XXX"
- the default geometry for non-ATA and non-SCSI disks is either
invalid or sub-optimizal.
RELEASE_CRUNCH builds use NO_MAN anyway, so this change is primarily
to avoid that developers have to set NO_MAN manually when they build
the static variant.
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.
