Commit Graph

58 Commits

Author SHA1 Message Date
schweikh
d3367c5f5d Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00
schweikh
86f7487fb6 Fix typos, mostly s/ an / a / where appropriate and a few s/an/and/
Add FreeBSD Id tag where missing.
2002-12-30 21:18:15 +00:00
hsu
da4baeac50 Long chain of calls starting with bridge_on(), going through IPv6, and
ending up at ifa_ifwithdstaddr() could lead to a recursive lock of
the ifnet list mutex.
2002-12-27 00:24:35 +00:00
hsu
82e1e3bab0 SMP locking for ifnet list. 2002-12-22 05:35:03 +00:00
hsu
160081aef6 Switch to the conventional reference counting scheme. 2002-12-18 12:41:03 +00:00
hsu
c3153934cb Lock up ifaddr reference counts. 2002-12-18 11:46:59 +00:00
sam
f868f190bf o add if_nvlans member to track the number of vlans active on an interface
o add if_input member for interface drivers to call through to pass packets "up"
o remove ethernet-specific function decls (moved to ethernet.h)

Reviewed by:	many
Approved by:	re
2002-11-14 23:36:28 +00:00
bde
1d25e6987d Fixed some of the namespace pollution in rev.1.33. <sys/systm.h> was
included here because it was once a prerequisite of <sys/mutex.h>
although that bug was fixed long ago.
2002-09-29 12:09:08 +00:00
brooks
d039f38d0d Add a new helper function if_printf() modeled on device_printf(). The
function takes a struct ifnet pointer followed by the usual printf
arguments and prints "<interfacename>: " before the results of printf.
Since this is the primary form of printf calls in network device drivers
and accounts for most uses of the ifnet menber if_unit, this
significantly simplifies many printf()s.
2002-09-24 17:35:08 +00:00
sobomax
f6cebc0606 Increase size of ifnet.if_flags from 16 bits (short) to 32 bits (int). To avoid
breaking application ABI use unused ifreq.ifru_flags[1] for upper 16 bits in
SIOCSIFFLAGS and SIOCGIFFLAGS ioctl's.

Reviewed by:	-hackers, -net
2002-08-18 07:05:00 +00:00
rwatson
f183894893 Move to nested include of _label.h instead of mac.h, reducing namespace
pollution.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
Suggested by:	bde
2002-08-14 01:37:22 +00:00
rwatson
f476cee602 Introduce support for Mandatory Access Control and extensible
kernel access control.

Label network interface structures, permitting security features to
be maintained on those objects.  if_label will be used to authorize
data flow using the network interface.  if_label will be protected
using the same synchronization primitives as other mutable entries
in struct ifnet.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
2002-07-30 23:06:07 +00:00
imp
186864a31c Minor style nit 2002-05-07 18:11:55 +00:00
alfred
c9985516e4 Remove __P. 2002-03-19 21:54:18 +00:00
jlemon
0a6314db1d whitespace fixes. 2001-12-14 19:32:47 +00:00
luigi
f8ad22919e Device Polling code for -current.
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
2001-12-14 17:56:12 +00:00
luigi
f5781681df Expand the comment on the layout of softc, arpcom and ifnet structures,
and list the places where the assumption is used.
2001-11-22 23:59:56 +00:00
jhb
866e8e774b Remove ifnet.if_mpsafe for now. If this is needed, it won't be needed
until much later when the network stack locking is farther along.

Approved by:	jlemon
2001-11-14 18:36:37 +00:00
ru
ecb4d3d05f Pull post-4.4BSD change to sys/net/route.c from BSD/OS 4.2.
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
2001-10-17 18:07:05 +00:00
fjoe
8ef8a1b13f bring in ARP support for variable length link level addresses
Reviewed by:	jdp
Approved by:	jdp
Obtained from:	NetBSD
MFC after:	6 weeks
2001-10-14 20:17:53 +00:00
mjacob
531fdd5ce2 Documentation comment: note that the each NIC's softc is assumed to start
with an ifnet structure.

MFC after:	1 week
2001-10-02 18:08:34 +00:00
jlemon
131e3ad4ce Add two fields to the ifnet structure indicating what extra capabilities
a network device has, and which ones are enabled.
2001-09-18 17:41:42 +00:00
julian
5596676e6c KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
jlemon
f729fe0a4a Wrap array accesses in macros, which also happen to be lvalues:
ifnet_addrs[i - 1]  -> ifaddr_byindex(i)
        ifindex2ifnet[i]    -> ifnet_byindex(i)

This is intended to ease the conversion to SMPng.
2001-09-06 02:40:43 +00:00
brooks
5da97d80e2 Add kernel infrastructure for network device cloning.
Reviewed by:	ru, ume
Obtained from:	NetBSD
MFC after:	1 week
2001-07-02 20:49:25 +00:00
jhb
b47bfbe544 Catch up to header include changes:
- <sys/mutex.h> now requires <sys/systm.h>
- <sys/mutex.h> and <sys/sx.h> now require <sys/lock.h>
2001-03-28 09:17:56 +00:00
bmilekic
f364d4ac36 Change and clean the mutex lock interface.
mtx_enter(lock, type) becomes:

mtx_lock(lock) for sleep locks (MTX_DEF-initialized locks)
mtx_lock_spin(lock) for spin locks (MTX_SPIN-initialized)

similarily, for releasing a lock, we now have:

mtx_unlock(lock) for MTX_DEF and mtx_unlock_spin(lock) for MTX_SPIN.
We change the caller interface for the two different types of locks
because the semantics are entirely different for each case, and this
makes it explicitly clear and, at the same time, it rids us of the
extra `type' argument.

The enter->lock and exit->unlock change has been made with the idea
that we're "locking data" and not "entering locked code" in mind.

Further, remove all additional "flags" previously passed to the
lock acquire/release routines with the exception of two:

MTX_QUIET and MTX_NOSWITCH

The functionality of these flags is preserved and they can be passed
to the lock/unlock routines by calling the corresponding wrappers:

mtx_{lock, unlock}_flags(lock, flag(s)) and
mtx_{lock, unlock}_spin_flags(lock, flag(s)) for MTX_DEF and MTX_SPIN
locks, respectively.

Re-inline some lock acq/rel code; in the sleep lock case, we only
inline the _obtain_lock()s in order to ensure that the inlined code
fits into a cache line. In the spin lock case, we inline recursion and
actually only perform a function call if we need to spin. This change
has been made with the idea that we generally tend to avoid spin locks
and that also the spin locks that we do have and are heavily used
(i.e. sched_lock) do recurse, and therefore in an effort to reduce
function call overhead for some architectures (such as alpha), we
inline recursion for this case.

Create a new malloc type for the witness code and retire from using
the M_DEV type. The new type is called M_WITNESS and is only declared
if WITNESS is enabled.

Begin cleaning up some machdep/mutex.h code - specifically updated the
"optimized" inlined code in alpha/mutex.h and wrote MTX_LOCK_SPIN
and MTX_UNLOCK_SPIN asm macros for the i386/mutex.h as we presently
need those.

Finally, caught up to the interface changes in all sys code.

Contributors: jake, jhb, jasone (in no particular order)
2001-02-09 06:11:45 +00:00
phk
d214ae2171 Convert if_multiaddrs from LIST to TAILQ so that it can be traversed
backwards in the three drivers which want to do that.

Reviewed by:    mikeh
2001-02-06 10:12:15 +00:00
peter
20862096d0 Make the number of loopback interfaces dynamically tunable. Why one
would *want* to is a different story, but it used to be able to be done
statically.  Get rid of #include "loop.h" and struct ifnet loif[NLOOP];
This could be used as an example of how to do this in other drivers,
for example: ccd.
2001-01-29 11:06:26 +00:00
jlemon
55440769df Unbreak world; #include <sys/mutex.h> instead of <machine/mutex.h>
Only include <sys/mbuf.h> when building kernel sources.  This should
probably be changed to require callers to include it themselves.
2000-11-26 21:47:01 +00:00
jlemon
954e1d2ccd Lock down the network interface queues. The queue mutex must be obtained
before adding/removing packets from the queue.  Also, the if_obytes and
if_omcasts fields should only be manipulated under protection of the mutex.

IF_ENQUEUE, IF_PREPEND, and IF_DEQUEUE perform all necessary locking on
the queue.  An IF_LOCK macro is provided, as well as the old (mutex-less)
versions of the macros in the form _IF_ENQUEUE, _IF_QFULL, for code which
needs them, but their use is discouraged.

Two new macros are introduced: IF_DRAIN() to drain a queue, and IF_HANDOFF,
which takes care of locking/enqueue, and also statistics updating/start
if necessary.
2000-11-25 07:35:38 +00:00
joe
c6d8349444 Augment the 'ifaddr' structure with a 'struct if_data' to keep
statistics on a per network address basis.

Teach the IPv4 and IPv6 input/output routines to log packets/bytes
against the network address connected to the flow.

Teach netstat to display the per-address stats for IP protocols
when 'netstat -i' is evoked, instead of displaying the per-interface
stats.
2000-10-19 23:15:54 +00:00
archie
63e7d24009 Export the functionality of SIOCSIFLLADDR with if_setlladdr()
and add some more rigorous sanity checking in the process.

Reviewed by:	freebsd-net
2000-08-15 00:48:38 +00:00
archie
7357df6b48 Make all Ethernet drivers attach using ether_ifattach() and detach using
ether_ifdetach().

The former consolidates the operations of if_attach(), ng_ether_attach(),
and bpfattach(). The latter consolidates the corresponding detach operations.

Reviewed by:	julian, freebsd-net
2000-07-13 22:54:34 +00:00
archie
f22c6e6da0 Fix kernel build breakage when 'device ether' was not included. 2000-06-29 19:14:28 +00:00
archie
9af816e946 Make the ng_ether(4) node type dynamically loadable like the rest.
This means 'options NETGRAPH' is no longer necessary in order to get
netgraph-enabled Ethernet interfaces. This supports loading/unloading
the ng_ether.ko and attaching/detaching the Ethernet interface in any
order.

Add two new hooks 'upper' and 'lower' to allow access to the protocol
demux engine and the raw device, respectively. This enables bridging
to be defined as a netgraph node, if so desired.

Reviewed by:	freebsd-net@freebsd.org
2000-06-26 23:34:54 +00:00
jake
961b97d434 Back out the previous change to the queue(3) interface.
It was not discussed and should probably not happen.

Requested by:		msmith and others
2000-05-26 02:09:24 +00:00
archie
4ba625d0ce Just need to pass the address family to if_simloop(), not the whole sockaddr. 2000-05-24 21:16:56 +00:00
jake
d93fbc9916 Change the way that the queue(3) structures are declared; don't assume that
the type argument to *_HEAD and *_ENTRY is a struct.

Suggested by:	phk
Reviewed by:	phk
Approved by:	mdodd
2000-05-23 20:41:01 +00:00
jlemon
0dcc5bc0d1 Add support for offloading IP/TCP/UDP checksums to NIC hardware which
supports them.
2000-03-27 19:14:27 +00:00
peter
15b9bcb121 Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot).  This is consistant with the other
BSD's who made this change quite some time ago.  More commits to come.
1999-12-29 04:46:21 +00:00
shin
cad2014b27 KAME netinet6 basic part(no IPsec,no V6 Multicast Forwarding, no UDP/TCP
for IPv6 yet)

With this patch, you can assigne IPv6 addr automatically, and can reply to
IPv6 ping.

Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project
1999-11-22 02:45:11 +00:00
shin
7efc91cadc KAME related header files additions and merges.
(only those which don't affect c source files so much)

Reviewed by: cvs-committers
Obtained from: KAME project
1999-11-05 14:41:39 +00:00
peter
3b842d34e8 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
brian
29c67703e3 Define IF_MAXMTU and IF_MINMTU and don't allow MTUs with
out-of-range values.

``comparison is always 0'' warnings are silly !

Ok'd by:	wollman, dg
Advised by:	bde
1999-08-06 13:53:03 +00:00
pb
695feac96a PR: kern/10570
Submitted by:	adrian@freebsd.org

Change reference count in struct ifaddr to a u_int, to be able
to handle more than 2^16 routes to the same interface.

Fix suggested by Andrew Bangs <andrewb@demon.net> in PR kern/10570.
Tested by <adrian@freebsd.org> and me under -current.
1999-05-16 17:09:20 +00:00
peter
73556bfee1 Add sufficient braces to keep egcs happy about potentially ambiguous
if/else nesting.
1999-05-06 18:13:11 +00:00
peter
087d4857e5 Bring the 'new-bus' to the i386. This extensively changes the way the
i386 platform boots, it is no longer ISA-centric, and is fully dynamic.
Most old drivers compile and run without modification via 'compatability
shims' to enable a smoother transition.  eisa, isapnp and pccard* are
not yet using the new resource manager.  Once fully converted, all drivers
will be loadable, including PCI and ISA.

(Some other changes appear to have snuck in, including a port of Soren's
 ATA driver to the Alpha.  Soren, back this out if you need to.)

This is a checkpoint of work-in-progress, but is quite functional.

The bulk of the work was done over the last few years by Doug Rabson and
Garrett Wollman.

Approved by:	core
1999-04-16 21:22:55 +00:00
phk
38464a3bbc Generalize the if_up() and if_down() functions under the names
if_route() and if_unroute().

This is first step towards sanitizing IFF_UP and IFF_RUNNING
1998-12-16 18:30:43 +00:00
julian
1ee51dd89f Go through the loopback code with a broom..
Remove lots'o'hacks.
looutput is now static.

Other callers who want to use loopback to allow shortcutting
should call the special entrypoint for this, if_simloop(), which is
specifically designed for this purpose. Using looutput for this purpose
was problematic, particularly with bpf and trying to keep track
of whether one should be using the charateristics of the loopback interface
or the interface (e.g. if_ethersubr.c) that was requesting the loopback.
There was a whole class of errors due to this mis-use each of which had
hacks to cover them up.

Consists largly of hack removal :-)
1998-06-12 03:48:19 +00:00