Turn the sigio sx into a mutex.
Sigio lock is really only needed to protect interrupts from dereferencing
the sigio pointer in an object when the sigio itself is being destroyed.
In order to do this in the most unintrusive manner change pgsigio's
sigio * argument into a **, that way we can lock internally to the
function.
Requested by: bde
Since locking sigio_lock is usually followed by calling pgsigio(),
move the declaration of sigio_lock and the definitions of SIGIO_*() to
sys/signalvar.h.
While I am here, sort include files alphabetically, where possible.
of a socket. This avoids lock order reversal caused by locking a
process in pgsigio().
sowakeup() and the callers of it (sowwakeup, soisconnected, etc.) now
require sigio_lock to be locked. Provide sowwakeup_locked(),
soisconnected_locked(), and so on in case where we have to modify a
socket and wake up a process atomically.
most cases NULL is passed, but in some cases such as network driver locks
(which use the MTX_NETWORK_LOCK macro) and UMA zone locks, a name is used.
Tested on: i386, alpha, sparc64
general cleanup of the API. The entire API now consists of two functions
similar to the pre-KSE API. The suser() function takes a thread pointer
as its only argument. The td_ucred member of this thread must be valid
so the only valid thread pointers are curthread and a few kernel threads
such as thread0. The suser_cred() function takes a pointer to a struct
ucred as its first argument and an integer flag as its second argument.
The flag is currently only used for the PRISON_ROOT flag.
Discussed on: smp@
- Make sure the interface is UP and RUNNING in fddi_input().
- Reorder and comment packet tests in fddi_input().
- Call if_attach() in fddi_ifattach().
- Test for a valid return from ifaddr_byindex().
- Use struct fddi_header where appropriate.
- Use bcopy() rather than memcpy().
- Use FDDI_ADDR_LEN macro instead of ETHER_ADDR_LEN macro.
- Add loadable module support.
- Use FDDI_ADDR_LEN rather than a magic number or a sizeof().
- Hide distracting sizeof() behind FDDI_HDR_LEN macro.
- Don't use sizeof(struct llc) in areas where we mean LLC_SNAPFRAMELEN.
not removing tabs before "__P((", and not outdenting continuation lines
to preserve non-KNF lining up of code with parentheses. Switch to KNF
formatting and/or rewrap the whole prototype in some cases.
that causes a machine to panic when the kernel PPP / DEFLATE code is used.
1.11 moved a ZFREE to a point after the structural members were clobbered
by stores into a union'd structure.
This commit fixes the bug and adds a big whopping comment to make sure
the code isn't 'cleaned up' again :-)
Ian Dowse came up with the same patch independantly 68 seconds before I
did, talk about Karma!
I would also like to thank Eugene Grosbein for marathon work in tracking the
problem down by udpating his -stable based on date over and over again
to close in on the commit that caused his crashes.
PR: kern/35969
Reviewed by: Ian Dowse <iedowse@maths.tcd.ie>
X-MFC after: immediately
# sysctl net.link.ether.bdg_ipf=1
To enable. Just like ipfw(8) bridging, only input packets are filtered
in the bridge. Filtering works just like in the IP layer, ipf(8)
first, then ipfw(8). And just like in the IP layer, both are
independent, one need not be run to use the other. (Note: This will
not work in, but doesn't break, the bridge.ko module. The ipl.ko
module would need to be fixed before that is worth worrying about.)
Reviewed by: luigi
unit allocation with a bitmap in the generic layer. This
allows us to get rid of the duplicated rman code in every
clonable interface.
Reviewed by: brooks
Approved by: phk
pseudo-devices when an interface goes away. Otherwise, an open /dev/net/foo0
when the interface is removed can cause a crash.
Not objected to by: jlemon
active-filter in pppd(8).
PR: kern/12281
Submitted by: Tim Moore <moore@bricoworks.com>
Not objected by: peter
Reviewed by: ru
Approved by: ru
MFC after: 1 week
