time from the PPP packets sent. This effectively merges rev 1.2 of
the old i4b_ispppsubr.c, with the exception that i eventually ended up
in debugging and fixing it so the idle time is now really
detected. ;-) (The version in i4b simply doesn't work right since it
still accounts for incoming LCP echo packets which it is supposed to
ignore for idle time considerations...)
Obtained from: i4b
MFC after: 1 month
sppp_parms that are needed for the SPPPIO[GS]DEFS ioctl commands.
This allows it to keep struct sppp inside #ifdef _KERNEL (where it
belongs), and prevents userland programs that wish to include
<net/if_sppp.h> from including the earth, the hell, and the universe
before the are able to resolve all the kernel-internal stuff that's in
struct sppp.
Discussed with: hm
MFC after: 1 month
This (effectively) merges rev 1.36 of i4b's old if_spppsubr.c, albeit
in a slightly different manner (we export the timer in millisecond
values as exposed to tick values from/to userland).
Obtained from: i4b
MFC after: 1 month
This is the logical merge of rev 1.32 of i4b's old if_spppsubr.c (which
was based on PR misc/11767), plus (i4b) rev 1.6 of i4b's if_ispppsubr.c,
albeit with numerous stylistic and cosmetic changes.
PR: misc/11767
Submitted by: i4b, Joachim Kuebart
MFC after: 1 month
Character-Map. RFC 1662 demands it for the sake of async to sync
PPP protocol converters (like Win9* :).
This merges rev 1.26/1.27 of the old i4b sppp changes.
route to the destination twice. Now that brian has fixed route.c to no
longer accept this second route, this long-standing nuisance became a
showstopper bug for sppp users.
In retrospect, this is the same fix as the one in rev 1.78 of if_sl.c;
most likely the original version of sppp has been cloned from SLIP. ;-)
if we've been given an RTA_IFP or changed RTA_IFA sockaddr.
This fixes the following bug:
>/dev/tun100
>/dev/tun101
ifconfig tun100 1.2.3.4 5.6.7.8
ifconfig tun101 1.2.3.4 6.7.8.9
route change 6.7.8.9 -ifa 1.2.3.4 -iface -mtu 500
which erroneously changed tun101's host route to have an ifp of tun100
(rt_getifa() sets the ifp after calling ifa_ifwithnet(1.2.3.4))
This incarnation submitted by: ru
select/poll, and therefore with pthreads. I doubt there is any way
to make this 100% semantically identical to the way it behaves in
unthreaded programs with blocking reads, but the solution here
should do the right thing for all reasonable usage patterns.
The basic idea is to schedule a callout for the read timeout when a
select/poll is done. When the callout fires, it ends the select if
it is still in progress, or marks the state as "timed out" if the
select has already ended for some other reason. Additional logic in
bpfread then does the right thing in the case where the timeout has
fired.
Note, I co-opted the bd_state member of the bpf_d structure. It has
been present in the structure since the initial import of 4.4-lite,
but as far as I can tell it has never been used.
PR: kern/22063 and bin/31649
MFC after: 3 days
Non-SMP, i386-only, no polling in the idle loop at the moment.
To use this code you must compile a kernel with
options DEVICE_POLLING
and at runtime enable polling with
sysctl kern.polling.enable=1
The percentage of CPU reserved to userland can be set with
sysctl kern.polling.user_frac=NN (default is 50)
while the remainder is used by polling device drivers and netisr's.
These are the only two variables that you should need to touch. There
are a few more parameters in kern.polling but the default values
are adequate for all purposes. See the code in kern_poll.c for
more details on them.
Polling in the idle loop will be implemented shortly by introducing
a kernel thread which does the job. Until then, the amount of CPU
dedicated to polling will never exceed (100-user_frac).
The equivalent (actually, better) code for -stable is at
http://info.iet.unipi.it/~luigi/polling/
and also supports polling in the idle loop.
NOTE to Alpha developers:
There is really nothing in this code that is i386-specific.
If you move the 2 lines supporting the new option from
sys/conf/{files,options}.i386 to sys/conf/{files,options} I am
pretty sure that this should work on the Alpha as well, just that
I do not have a suitable test box to try it. If someone feels like
trying it, I would appreciate it.
NOTE to other developers:
sure some things could be done better, and as always I am open to
constructive criticism, which a few of you have already given and
I greatly appreciated.
However, before proposing radical architectural changes, please
take some time to possibly try out this code, or at the very least
read the comments in kern_poll.c, especially re. the reason why I
am using a soft netisr and cannot (I believe) replace it with a
simple timeout.
Quick description of files touched by this commit:
sys/conf/files.i386
new file kern/kern_poll.c
sys/conf/options.i386
new option
sys/i386/i386/trap.c
poll in trap (disabled by default)
sys/kern/kern_clock.c
initialization and hardclock hooks.
sys/kern/kern_intr.c
minor swi_net changes
sys/kern/kern_poll.c
the bulk of the code.
sys/net/if.h
new flag
sys/net/if_var.h
declaration for functions used in device drivers.
sys/net/netisr.h
NETISR_POLL
sys/dev/fxp/if_fxp.c
sys/dev/fxp/if_fxpvar.h
sys/pci/if_dc.c
sys/pci/if_dcreg.h
sys/pci/if_sis.c
sys/pci/if_sisreg.h
device driver modifications
vnodes. This will hopefully serve as a base from which we can
expand the MP code. We currently do not attempt to obtain any
mutex or SX locks, but the door is open to add them when we nail
down exactly how that part of it is going to work.
"[...] and removes the hostcache code from standard kernels---the
code that depends on it is not going to happen any time soon,
I'm afraid."
Time to clean up.
Have sys/net/route.c:rtrequest1(), which takes ``rt_addrinfo *''
as the argument. Pass rt_addrinfo all the way down to rtrequest1
and ifa->ifa_rtrequest. 3rd argument of ifa->ifa_rtrequest is now
``rt_addrinfo *'' instead of ``sockaddr *'' (almost noone is
using it anyways).
Benefit: the following command now works. Previously we needed
two route(8) invocations, "add" then "change".
# route add -inet6 default ::1 -ifp gif0
Remove unsafe typecast in rtrequest(), from ``rtentry *'' to
``sockaddr *''. It was introduced by 4.3BSD-Reno and never
corrected.
Obtained from: BSD/OS, NetBSD
MFC after: 1 month
PR: kern/28360
- Report destination address of a P2P link when servicing
routing socket messages.
- Report interface name, address, and destination address
of a P2P link when servicing NET_RT_{DUMP,FLAGS} sysctls.
Part of CSRG revision 8.6 coresponds to revision 1.12.
CSRG revision 8.7 corresponds to revision 1.15.
existing devices (e.g.: tunX). This may need a little more thought.
Create a /dev/netX alias for devices. net0 is reserved.
Allow wiring of net aliases in /boot/device.hints of the form:
hint.net.1.dev="lo0"
hint.net.12.ether="00:a0:c9:c9:9d:63"
