- Add gre_mtx to protect global softc list.
- Hold gre_mtx over various list operations (insert, delete).
- Centralize if_gre interface teardown in gre_destroy(), and call this
from modevent unload and gre_clone_destroy().
- Export gre_mtx to ip_gre.c, which walks the gre list to look up gre
interfaces during encapsulation. Add a wonking comment on how we need
some sort of drain/reference count mechanism to keep gre references
alive while in use and simultaneous destroy.
This commit does not lockdown softc data, which follows in a future
commit.
- Add gif_mtx, which protects globals.
- Hold gif_mtx around manipulation of gif_softc_list.
- Abstract gif destruction code into gif_destroy(), which tears down
a softc after it's been removed from the global list by either module
unload or clone destroy.
- Lock gif_called, even though we know gif_called is broken with reentrant
network processing.
- Document an event ordering problem in gif_set_tunnel() that will need
to be fixed.
gif_softc fields not locked down in this commit.
NO_POSIX_COMPAT was added in 1996 as attempt to resolve POSIX regex
functions conflict for fixit floppy (they are both in libc and libgnuregex)
The way it done (simple excluding POSIX functions from compile) breaks
legitimate case when, say, some program from ports calls both POSIX
and GNU regex functions (it will call POSIX ones from libc and fails,
because header <regex.h> is from GNU).
Now our fixit floppy (and other crunched floppies, as I check) not
use libgnuregex, so the hack can be removed.
processing with gif interfaces, to a global variable named "gif_called".
Add an annotation that this approach will not work with a reentrant
network stack, and that we should instead use packet tags to detect
excessive recursive processing.
exactly the same as patch from the PR, which also exited if the
config file was missing. I didn't use Jeff's patch because I was
worried that some people might start inetd, create the config file
and then HUP inetd.
PR: 60806
Submitted by: Jeff Ito <jeffi@rcn.com>
MFC after: 2 weeks
implementation could be characterized as a hybrid of the amd64 and i386
implementations. Specifically, the direct virtual-to-physical mapping is
used if possible and sf_buf_alloc() is used if the direct map cannot.
to other files in netatalk:
Log:
Since I have my hands all over netatalk adding locking and restructuring
it, cinch the file's style closer to style(9) with regard to parenthesis:
s/( /(/g
s/ )/)/g
s/return(/return (/g
s/return 0/return (0)/
s/return 1/return (1)/
when it associates with a net. Because FreeBSD's kstack size is only
2 pages by default, this blows the stack and causes a double fault.
To deal with this, we now create all our kthreads with 8 stack pages.
Also, we now run all timer callouts in the ndis swi thread (since
they would otherwise run in the clock ithread, whose stack is too
small). It happens that the alloca() in this case was occuring within
the interrupt handler, which was already running in the ndis swi
thread, but I want to deal with the callouts too just to be extra
safe.
NOTE: this will only work if you update vm_machdep.c with the change
I just committed. If you don't include this fix, setting the number
of stack pages with kthread_create() has essentially no effect.
with more than the normal amount of stack pages, however the stack
pointer always wound up being initialized using KSTACK_PAGES. It
should be using td->td_kstack_pages instead. This means that although
the vm subsystem would give you all the stack pages you asked for,
%esp would always be initialized as if you had just 2 pages, and
the rest would go to waste.
I wanted to use the 'give me more stack pages' feature of kthread_create()
because the Intel 2200BG NDIS driver does an alloca() of about 5000 bytes,
which wrecks the stack with the default 2 page size, and I was baffled
that no matter how much code I shoved into thread contexts with
allegedly larger stacks, the thing would still crash unless I changed
KSTACK_PAGES.
Note: this bug is present in _ALL_ arches at this point. Peter has
promised to merge this fix into all of them.
instead of bus_alloc_resource_any() to restore source compatibility
with 5.2-REL and 5.2.1-REL systems. bus_alloc_resource_any() doesn't
really do anything besides hide some of bus_alloc_resource()'s arguments
from us, and in my opinion this isn't worth breaking backwards
compatibility for people who want to use the NDISulator code on 5.2.x.
activation (i.e., applications are using libpthread). This is because
SCHED_ULE sometimes puts P_SA processes into ksq_next unnecessarily.
Which doesn't give fair amount of CPU time to processes which are
using scheduler-activation-based threads when other (semi-)CPU-intensive,
non-P_SA processes are running.
Further work will no doubt be done by jeffr at a later date.
Submitted by: Taku YAMAMOTO <taku@cent.saitama-u.ac.jp>
Reviewed by: rwatson, freebsd-current@
+ declare some shell variables as 'local'
+ add a missing ';;' in a 'case' statement
+ centralize newfs options
+ properly override GID and UID when installing include files and libraries
+ add a missing '-r' in disklabel commands (maybe not necessary, but it
does not harm and it was used in the RELENG_4 version)
+ no more require 'perl' when installing the secondary loader
+ use '-t rsa1' when invoking ssh-keygen
with the correct alignment. This is important because this calls to
library static constructors are made from here. The bug in the old crt*.s
files hid this because in this case, two wrongs do indeed make a right.
Also, call _rtld_bind() with the correct alignment, because it calls back
into the pthread library locking functions. If things happen just
the wrong way, we get a SIG10 due to the broken stack alignment.
