Commit Graph

64 Commits

Author SHA1 Message Date
imp
4b319958e7 Start each of the license/copyright comments with /*-, minor shuffle of lines 2005-01-06 01:43:34 +00:00
green
9532ab7116 * Add a "how" argument to uma_zone constructors and initialization functions
so that they know whether the allocation is supposed to be able to sleep
  or not.
* Allow uma_zone constructors and initialation functions to return either
  success or error.  Almost all of the ones in the tree currently return
  success unconditionally, but mbuf is a notable exception: the packet
  zone constructor wants to be able to fail if it cannot suballocate an
  mbuf cluster, and the mbuf allocators want to be able to fail in general
  in a MAC kernel if the MAC mbuf initializer fails.  This fixes the
  panics people are seeing when they run out of memory for mbuf clusters.
* Allow debug.nosleepwithlocks on WITNESS to be disabled, without changing
  the default.

Both bmilekic and jeff have reviewed the changes made to make failable
zone allocations work.
2004-08-02 00:18:36 +00:00
marcel
f95797fb06 Update for the KDB framework:
o  Call kdb_enter() instead of Debugger().
o  Don't make such calls conditional upon KDB instead of DDB because
   they're already conditional upon EN_DEBUG.
2004-07-10 21:03:52 +00:00
scottl
28681e97b0 All three of these drivers abused cv_waitq_empty in the same way by spinning
on it in hopes of making sure that the waitq was empty before going on.
This wasn't needed and probably never would have worked as intended.  Now
that cv_waitq_empty() and friends are gone, the code in these drivers that
spins on it can go away too.  This should unbreak LINT.

Discussed with:	kan
2004-02-29 09:26:01 +00:00
harti
1745a6f617 Move the locking of the softc up to before the allocation of the
transmission map. This allocation accesses the softc so should
be under the lock (it uses NOWAIT).
2003-12-17 10:01:46 +00:00
brooks
f1e94c6f29 Replace the if_name and if_unit members of struct ifnet with new members
if_xname, if_dname, and if_dunit. if_xname is the name of the interface
and if_dname/unit are the driver name and instance.

This change paves the way for interface renaming and enhanced pseudo
device creation and configuration symantics.

Approved By:	re (in principle)
Reviewed By:	njl, imp
Tested On:	i386, amd64, sparc64
Obtained From:	NetBSD (if_xname)
2003-10-31 18:32:15 +00:00
harti
dcc92de503 Remove the ATMIOCENA and ATMIOCDIS ioctl. Everyting has been converted
to use the new OPENVCC and CLOSEVCC calls that allow the sepcification
of traffic parameters for the connections.
2003-08-06 14:53:27 +00:00
harti
8466c4c3ed Honor the new ATMIO_FLAG_ASYNC that requests asynchronuous open/close
operations on VCs.
2003-08-06 11:53:53 +00:00
harti
05dee16468 When sending check that the channel is really open. Get the information
whether we use AAL5 or not from the aal field of the channel parameters
instead of the flag in the pseudo header. This flag will go away soon.
2003-08-06 11:35:41 +00:00
harti
77284b6242 Print an array index that is computed as ptrdiff_t with %tu. 2003-08-06 11:30:53 +00:00
obrien
093de35e66 Change the format type to unbreak LINT on 64-bit platforms. 2003-08-06 07:18:42 +00:00
harti
900a53301d Implement per-VC statistics. 2003-08-05 13:45:54 +00:00
harti
22492bf376 Implement the ATMIOCOPENVCC and ATMIOCCLOSEVCC ioctls(). This was the
last driver that did not know about those.
2003-08-05 13:39:36 +00:00
harti
8ec20dfab3 Use the generic getvccs function from net/if_atmsubr.c and remove
the home-grown version.
2003-08-05 12:26:26 +00:00
harti
1d482c7b90 Arrghhh. Remove debugging printf's that slipped in in the pre-previous
commit.
2003-08-05 12:20:19 +00:00
harti
cd740a3ff6 Use __FBSDID() as per style(9). 2003-08-05 12:19:05 +00:00
harti
d982a67297 Make the en(4) driver more like the other ATM drivers. This is the
preparation for supporting the OPENVCC and CLOSEVCC ioctls which
are needed for ng_atm. This required some re-organisation of the code
(mostly converting array indexes to pointers). This also gives us
an array of open vccs that will help in using the generic GETVCCS handler.
2003-08-05 12:02:25 +00:00
harti
1a1628d17d Move the clearing of the IFF_RUNNING flag into the reset routine.
Otherwise the interface will report RUNNING to ifconfig after doing
'ifconfig down' although it isn't running anymore.
2003-08-05 10:51:33 +00:00
harti
9eb1765de5 Be careful to call bus_dmamap_load with BUS_DMA_NOWAIT so that the
callback will never be deferred. ATM needs to prevent cell and packet
ordering. Also use the default mutex and lock functions (those that
panic) for the tag creation.
2003-07-15 15:45:41 +00:00
harti
4a052c80df Delete a superfluous semi-colon.
Pointed out by: nick@garage.freebsd.pl
2003-07-04 13:41:03 +00:00
scottl
4d495abb9d Mega busdma API commit.
Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg.
Lockfunc allows a driver to provide a function for managing its locking
semantics while using busdma.  At the moment, this is used for the
asynchronous busdma_swi and callback mechanism.  Two lockfunc implementations
are provided: busdma_lock_mutex() performs standard mutex operations on the
mutex that is specified from lockfuncarg.  dftl_lock() is a panic
implementation and is defaulted to when NULL, NULL are passed to
bus_dma_tag_create().  The only time that NULL, NULL should ever be used is
when the driver ensures that bus_dmamap_load() will not be deferred.
Drivers that do not provide their own locking can pass
busdma_lock_mutex,&Giant args in order to preserve the former behaviour.

sparc64 and powerpc do not provide real busdma_swi functions, so this is
largely a noop on those platforms.  The busdma_swi on is64 is not properly
locked yet, so warnings will be emitted on this platform when busdma
callback deferrals happen.

If anyone gets panics or warnings from dflt_lock() being called, please
let me know right away.

Reviewed by:	tmm, gibbs
2003-07-01 15:52:06 +00:00
harti
7666b2bd95 Implement the ioctl that returns a list of currently open VCCs. 2003-06-13 13:50:38 +00:00
harti
4ebffe3ab8 Make the midway driver use the new ATM phy driver. This allows one to
toggle several media options (sonet/sdh, for example) with ifconfig and
to see the carrier state in ifconfig's output. It gives also read/write
access (given the right privilegs) to the S/Uni registers to user space
programs.
2003-06-13 12:08:09 +00:00
harti
3380919baf Make the internal statistics sysctl an array of integers rather than a string.
While a string is readable without a tool, an array is easier to process for
a monitoring application. This also prevents the extra hoops we need with
sbufs and locking.

Move the mtx_init() in en_attach() higher before the first failure point so
that we can unconditionally destroy it in en_destroy().
2003-06-04 15:38:32 +00:00
phk
ae05fc5265 Fix off-by-one error in range check of VC index.
Found by:       FlexeLint
2003-05-31 19:01:08 +00:00
harti
4d2e2437c2 Define a link layer MIB for ATM. Most fields of this MIB are needed by
ILMI daemons. Factor out common softc fields for all ATM interfaces that
need to be externally visible into an ifatm structure and make the midway
driver using this structure and fill the MIB.
2003-05-05 16:35:52 +00:00
harti
434086177f Add module data and version to the atm_subr and reference this info from the
(currently) only consumer (en).

Add a sysctl node hw.atm where the atm drivers will hook on their hardware
sysctl sub-trees.

Make atm_ifattach call if_attach and remove the corresponding call to if_attach
from en. Create atm_ifdetach and use that in en.

While the last change actually changes the interface this is not a problem in
practice because the only other consumer of this API is an older LANAI driver
on the net, that is not ready for current anyway.

Reviewed by:	-atm
2003-04-29 08:07:44 +00:00
harti
0162ac550e Convert the midway driver to use busdma. Except for this conversion the
following changes have been done:

- stylify. The original code was too hard to read.
- get rid of a number of compilation options (Adaptec-only, Eni-only, no-DMA).
- more debugging features.
- locking. This is not correct yet in the absence of interface layer locking,
  but is correct enough to not to cause lock order reversals.
- remove RAW mode. There are no users of this in the tree and I doubt that
  there are any.
- remove NetBSD compatibility code. There was no way to keep NetBSD non-busdma
  and FreeBSD busdma code together.
- if_en now buildable as a module.

This has been actively tested on sparc64 and i386 with ENI server and
client cards and an Adaptec card (thanks to kjc).

Reviewed by:	mdodd, arr
2003-04-25 16:14:03 +00:00
kjc
aa79b46152 clean up the en driver since it will survice for a while by
Harti Brandt's effort.
remove the DMA test to detect problems of the first generation PCI chipsets
back in 1998.
it is no longer needed and has been the source of the false alarm that
the driver uses too much stack space.
2003-03-12 10:28:26 +00:00
jlemon
04e28d5a81 Update netisr handling; Each SWI now registers its queue, and all queue
drain routines are done by swi_net, which allows for better queue control
at some future point.  Packets may also be directly dispatched to a netisr
instead of queued, this may be of interest at some installations, but
currently defaults to off.

Reviewed by: hsu, silby, jayanth, sam
Sponsored by: DARPA, NAI Labs
2003-03-04 23:19:55 +00:00
imp
cf874b345d Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
alfred
bf8e8a6e8f Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
sam
b16cb0a948 Correct mbuf packet header propagation. Previously, packet headers
were sometimes propagated using M_COPY_PKTHDR which actually did
something between a "move" and a  "copy" operation.  This is replaced
by M_MOVE_PKTHDR (which copies the pkthdr contents and "removes" it
from the source mbuf) and m_dup_pkthdr which copies the packet
header contents including any m_tag chain.  This corrects numerous
problems whereby mbuf tags could be lost during packet manipulations.

These changes also introduce arguments to m_tag_copy and m_tag_copy_chain
to specify if the tag copy work should potentially block.  This
introduces an incompatibility with openbsd which we may want to revisit.

Note that move/dup of packet headers does not handle target mbufs
that have a cluster bound to them.  We may want to support this;
for now we watch for it with an assert.

Finally, M_COPYFLAGS was updated to include M_FIRSTFRAG|M_LASTFRAG.

Supported by:	Vernier Networks
Reviewed by:	Robert Watson <rwatson@FreeBSD.org>
2002-12-30 20:22:40 +00:00
sam
14c32b5f40 network interface driver changes:
o don't strip the Ethernet header from inbound packets; pass packets
  up the stack intact (required significant changes to some drivers)
o reference common definitions in net/ethernet.h (e.g. ETHER_ALIGN)
o track ether_ifattach/ether_ifdetach API changes
o track bpf changes (use BPF_TAP and BPF_MTAP)
o track vlan changes (ifnet capabilities, revised processing scheme, etc.)
o use if_input to pass packets "up"
o call ether_ioctl for default handling of ioctls

Reviewed by:	many
Approved by:	re
2002-11-14 23:54:55 +00:00
phk
da9ce5cf0c Rename "struct device" to "struct midway_device" to avoid clashing
with newbus.
2002-09-28 21:59:59 +00:00
brooks
1da1f5abfe Don't include "bpf.h" when compiling on FreeBSD. We always compile in
bpf support these days.
2002-09-06 20:07:50 +00:00
alfred
3264aec746 Remove __P. 2002-03-20 02:08:01 +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
bmilekic
41a2af4aa7 Change check for existence of mbuf->m_ext.ext_free to check of new ext_type
in order to determine whether the ext_buf is a cluster, or some other type
of storage.

Reviewed by: jlemon
2000-11-11 23:01:44 +00:00
kjc
bc76e533a6 restore the freebsd local type-cast fixes that I mistakenly removed
in the previous commit while attempting to sync with netbsd.

Pointed out by: bde
(never thought of compiling i386's LINT with -64-bit-longs...)
2000-11-08 05:45:46 +00:00
kjc
d9fa1d2620 newbusify the en atm driver.
also
 - sync with netbsd
 - fix a bug that miscalculates tx cell counts when the pointer size isn't 4

tested both ENI and Adaptec cards on both i386 and alpha.
2000-11-07 09:30:14 +00:00
bde
a9f20e6f32 Enabled the used include of <machine/bus.h> -- don't depend on evil
namespace pollution in <sys/mutex.h>.  This was half fixed in rev.1.3
of midwayreg.h.  The pollution exposed the bug that this driver was
using toy versions of the bus space macros under FreeBSD.  Disabling
the toy versions made this driver compile and maybe support PIO space,
but dependent on the pollution.
2000-11-04 14:31:47 +00:00
phk
94a5006c9a Remove unneeded #include <sys/proc.h> lines. 2000-10-29 13:57:19 +00:00
phk
beadbd4365 Remove unneeded #include <machine/clock.h> 2000-10-15 14:19:01 +00:00
dwmalone
df0e25bf6c Replace the mbuf external reference counting code with something
that should be better.

The old code counted references to mbuf clusters by using the offset
of the cluster from the start of memory allocated for mbufs and
clusters as an index into an array of chars, which did the reference
counting. If the external storage was not a cluster then reference
counting had to be done by the code using that external storage.

NetBSD's system of linked lists of mbufs was cosidered, but Alfred
felt it would have locking issues when the kernel was made more
SMP friendly.

The system implimented uses a pool of unions to track external
storage. The union contains an int for counting the references and
a pointer for forming a free list. The reference counts are
incremented and decremented atomically and so should be SMP friendly.
This system can track reference counts for any sort of external
storage.

Access to the reference counting stuff is now through macros defined
in mbuf.h, so it should be easier to make changes to the system in
the future.

The possibility of storing the reference count in one of the
referencing mbufs was considered, but was rejected 'cos it would
often leave extra mbufs allocated. Storing the reference count in
the cluster was also considered, but because the external storage
may not be a cluster this isn't an option.

The size of the pool of reference counters is available in the
stats provided by "netstat -m".

PR:		19866
Submitted by:	Bosko Milekic <bmilekic@dsuper.net>
Reviewed by:	alfred (glanced at by others on -net)
2000-08-19 08:32:59 +00:00
peter
ef55d4b61b Remove #if NEN > 0 in the name of FreeBSD - it's not required as config
only compiles this file if it's true.  NEN is still used though. :-(
2000-01-29 14:38:04 +00:00
phk
e1b1875b55 remove unused #include, add $FreeBSD$ 1999-10-11 19:14:37 +00:00
des
3c4a5a075d Rename bpfilter to bpf. 1999-07-06 19:23:32 +00:00
kjc
2193f1d434 clean up en atm driver
o fix DDB support
   - include "opt_ddb.h"
   - fix Debugger() arg
   pointed out by bde

 o back out pvc shadow interface support
   - it is currently not used
   - to make it easier to merge another implementation

 o misc minor cleanup
1999-05-08 14:23:40 +00:00
peter
ffa341e935 Undo excess staticization - these two are meant to be callable from
DDB.
1999-05-06 22:19:38 +00:00