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linux-2.6.git
13 years agocfg80211: allow scanning on specified frequencies when using wext-compatibility
Holger Schurig [Wed, 9 Sep 2009 11:09:54 +0000 (13:09 +0200)]
cfg80211: allow scanning on specified frequencies when using wext-compatibility

Handles the case when SIOCSIWSCAN specified iw_scan_req.num_channels and
iw_scan_req.channels[].

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath9k: Initialize the priority gpio for BT coex 3-wire
Vasanthakumar Thiagarajan [Wed, 9 Sep 2009 09:55:52 +0000 (15:25 +0530)]
ath9k: Initialize the priority gpio for BT coex 3-wire

Oops, a stupid mistake in the original patch which adds coex 3-wire
support. Bluetooth priority gpio needs to be gpio 7.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath9k: Get rid of the modparam btcoex_enable
Vasanthakumar Thiagarajan [Wed, 9 Sep 2009 09:55:51 +0000 (15:25 +0530)]
ath9k: Get rid of the modparam btcoex_enable

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath9k: Enable btcoex based on the subsystem id of the device
Vasanthakumar Thiagarajan [Wed, 9 Sep 2009 09:55:50 +0000 (15:25 +0530)]
ath9k: Enable btcoex based on the subsystem id of the device

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath9k: Store subsystem id in struct hw_version
Vasanthakumar Thiagarajan [Wed, 9 Sep 2009 09:55:49 +0000 (15:25 +0530)]
ath9k: Store subsystem id in struct hw_version

This subsystem id will be used later to turn on the btcoex
support.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agowireless: mark prism54 as deprecated and mark for removal
Luis R. Rodriguez [Tue, 8 Sep 2009 19:09:47 +0000 (12:09 -0700)]
wireless: mark prism54 as deprecated and mark for removal

The preferred module is p54pci which also supports FullMAC
PCI / Cardbus devices. We schedule removal for 2.6.34. Reason
to remove this is no one really is testing prism54 anymore,
and while it works p54pci provides support for the same hardware.
It should be noted I have been told some FullMAC devices may not
have worked with the SoftMAC driver but to date we have yet to
recieve a single bug report regarding this. If there are users
out there please let us know!

Cc: aquilaver@yahoo.com
Cc: linux-kernel@vger.kernel.org
Cc: Dan Williams <dcbw@redhat.com>
Cc: Kai Engert <kengert@redhat.com>
Cc: Jean Tourrilhes <jt@hpl.hp.com>
Cc: Tim de Waal<tim.dewaal@yahoo.com>
Cc: Roy Marples <uberlord@gentoo.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Christian Lamparter <chunkeey@web.de>
Cc: Björn Steinbrink <B.Steinbrink@gmx.de>
Cc: Tim Gardner <tim.gardner@canonical.com>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agob44/b43/b43legacy: Fix switch warnings introduced by SSB-SDIO
Michael Buesch [Tue, 8 Sep 2009 17:33:31 +0000 (19:33 +0200)]
b44/b43/b43legacy: Fix switch warnings introduced by SSB-SDIO

This fixes some gcc warnings for switch statements.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agossb: Implement SDIO host bus support
Albert Herranz [Tue, 8 Sep 2009 17:30:12 +0000 (19:30 +0200)]
ssb: Implement SDIO host bus support

Add support for communicating with a Sonics Silicon Backplane through a
SDIO interface, as found in the Nintendo Wii WLAN daughter card.

The Nintendo Wii WLAN card includes a custom Broadcom 4318 chip with
a SDIO host interface.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath9k: Remove unnecessary casting to u8 in pci_read_config_byte() call
Vasanthakumar Thiagarajan [Mon, 7 Sep 2009 12:16:50 +0000 (17:46 +0530)]
ath9k: Remove unnecessary casting to u8 in pci_read_config_byte() call

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath9k: Disable ASPM when btcoex is active
Vasanthakumar Thiagarajan [Mon, 7 Sep 2009 12:16:49 +0000 (17:46 +0530)]
ath9k: Disable ASPM when btcoex is active

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoMAINTAINERS: Add Atheros Linux wireless drivers home page
Joe Perches [Mon, 7 Sep 2009 18:34:30 +0000 (11:34 -0700)]
MAINTAINERS: Add Atheros Linux wireless drivers home page

On Sun, 2009-09-06 at 12:26 -0700, Luis R. Rodriguez wrote:
> On Sun, Sep 6, 2009 at 10:59 AM, Joe Perches<joe@perches.com> wrote:
> > On Thu, 2009-09-03 at 15:54 -0700, Luis R. Rodriguez wrote:
> >> I'm pleased to announce the new home page to Atheros Linux wireless drivers:
> >> http://wireless.kernel.org/en/users/Drivers/Atheros
> > Perhaps add this to MAINTAINERS?
> Fine by me, except ath5k and ath9k also have their own respective page
> so those can also be added.

(cc's trimmed and maintainers added)

Perhaps this instead:

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Luis R. Rodriguez <mcgrof@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agob43: Fix sparse warning in hw-tkip code
Michael Buesch [Sun, 6 Sep 2009 14:18:58 +0000 (16:18 +0200)]
b43: Fix sparse warning in hw-tkip code

This fixes a sparse warning in the hardware-TKIP code:

drivers/net/wireless/b43/xmit.c:272:18: warning: incorrect type in assignment (different base types)
drivers/net/wireless/b43/xmit.c:272:18:    expected unsigned short [unsigned] [short] <noident>
drivers/net/wireless/b43/xmit.c:272:18:    got restricted unsigned short [usertype] <noident>

The code should work correctly with and without this patch applied.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agob43: Really disable QoS, if requested
Michael Buesch [Sun, 6 Sep 2009 13:42:45 +0000 (15:42 +0200)]
b43: Really disable QoS, if requested

Currently, when QoS-disable is requested, we would leave QoS enabled
in firmware, but only queue frames on one queue.
Change that and also tell firmware about disabled QoS, so it
completely ignores all the QoS parameters. Also don't upload the parameters,
if QoS is disabled.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agort2x00: Hardcode TX ack timeout and consume time
Ivo van Doorn [Sun, 6 Sep 2009 13:14:23 +0000 (15:14 +0200)]
rt2x00: Hardcode TX ack timeout and consume time

The calculated values for the ACK timeout and ACK
consume time are different then the values as
used by the Legacy drivers.

After testing from James Ledwith it appeared that
the calculated values caused a high amount of TX
failures, and the values from the Legacy drivers
were the most optimal to prevent TX failure due to
excessive retries.

The symptoms of this problem:
 - Rate control module always falls back to 1Mbs
 - Low throughput when bitrate was fixed

Possible side-effects (not confirmed but highly likely)
 - Problems with DHCP
 - Broken connections due to lack of probe response

This should fix at least:
Kernel bugzilla reports: [13362], [13009], [9273]
Fedora bugzilla reports: [443203]
but possible some additional bugs as well.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agob43: PCMCIA is not experimental anymore
Michael Buesch [Sun, 6 Sep 2009 12:49:43 +0000 (14:49 +0200)]
b43: PCMCIA is not experimental anymore

PCMCIA support works well and is not experimental anymore.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath,ar9170: implemented conformance test limit calc. for tx power
Joerg Albert [Sat, 5 Sep 2009 14:07:47 +0000 (16:07 +0200)]
ath,ar9170: implemented conformance test limit calc. for tx power

apply the conformance test limits (CTL) stored in the eeprom upon
the values calculated for the tx power (ar->power_*).

This is based on the implementation in the vendor driver
(hal/hpmain.c, line 3700 ff.) with one difference:
If any ctl mode isn't found in the eeprom, we fall back to the "lower",
legacy modes (5GHT20,11A or 2GHT20,11G,11B). Otus only did 5GHT20->11A.

Currently CTL are applied for the FCC group only.

Signed-off-by: Joerg Albert <jal2@gmx.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath,ar9170: move CTL_ defines into regd.h
Joerg Albert [Sat, 5 Sep 2009 14:07:43 +0000 (16:07 +0200)]
ath,ar9170: move CTL_ defines into regd.h

The ar9170 driver needs the defines for conformance test limit groups
and cannot include regd_common.h

Signed-off-by: Joerg Albert <jal2@gmx.de>
Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agossb: Fail ssb modinit, if attach of the buses failed.
Michael Buesch [Sat, 5 Sep 2009 09:18:47 +0000 (11:18 +0200)]
ssb: Fail ssb modinit, if attach of the buses failed.

SSB modinit should not succeed, if busattach failed.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agob43: remove SHM spinlock
Michael Buesch [Fri, 4 Sep 2009 20:57:26 +0000 (22:57 +0200)]
b43: remove SHM spinlock

This removes the SHM spinlock.
SHM is protected by wl->mutex.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agob43: Remove PIO RX workqueue
Michael Buesch [Fri, 4 Sep 2009 20:56:19 +0000 (22:56 +0200)]
b43: Remove PIO RX workqueue

This removes the PIO RX work. It's not needed anymore, because
we can sleep in the threaded interrupt handler.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agob43: Remove DMA/PIO queue locks
Michael Buesch [Fri, 4 Sep 2009 20:55:00 +0000 (22:55 +0200)]
b43: Remove DMA/PIO queue locks

This removes the DMA/PIO queue locks. Locking is handled by
wl->mutex now.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agob43: Remove TX spinlock
Michael Buesch [Fri, 4 Sep 2009 20:53:18 +0000 (22:53 +0200)]
b43: Remove TX spinlock

This removes the TX spinlock and defers TX to a workqueue to allow
locking wl->mutex instead and to allow sleeping for register accesses.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agob43: Use a threaded IRQ handler
Michael Buesch [Fri, 4 Sep 2009 20:51:29 +0000 (22:51 +0200)]
b43: Use a threaded IRQ handler

Use a threaded IRQ handler to allow locking the mutex and
sleeping while executing an interrupt.
This removes usage of the irq_lock spinlock, but introduces
a new hardirq_lock, which is _only_ used for the PCI/SSB lowlevel
hard-irq handler. Sleeping busses (SDIO) will use mutex instead.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agowireless: update cfg80211 kconfig entry
Luis R. Rodriguez [Tue, 1 Sep 2009 15:53:49 +0000 (08:53 -0700)]
wireless: update cfg80211 kconfig entry

cfg80211 is now *the* wireless configuration API. Lets also
give a little explanation as to what it is and refer people to
the wireless wiki for more information.

Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoar9170: implement frequency calibration for one-stage/openfw
Christian Lamparter [Thu, 3 Sep 2009 18:25:31 +0000 (20:25 +0200)]
ar9170: implement frequency calibration for one-stage/openfw

This patch ports some code from the vendor driver, which is
supposed to upload the right calibration values for the
chosen frequency.

In theory, this should give a better range and throughput
for all users with the open, or one-stage firmware.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath9k: Fix channelFlags for 2GHZ
Sujith [Thu, 3 Sep 2009 06:38:53 +0000 (12:08 +0530)]
ath9k: Fix channelFlags for 2GHZ

CHANNEL_G has to be set for 2GHZ channels since
IS_CHAN_G() checks for this in channelFlags and not in
chanmode. To make things messier, ath9k_hw_process_ini()
checks for CHANNEL_G in chanmode and not in channelFlags.
The supreme, brain-searing fix is to set the
flag in both cases.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath9k: Fix RX Filter handling for BAR
Sujith [Thu, 3 Sep 2009 06:38:43 +0000 (12:08 +0530)]
ath9k: Fix RX Filter handling for BAR

BAR frames have to be sent to mac80211 only if the
current channel is HT. Also, move the macro to
enum ath9k_rx_filter.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath9k: claim irq for ath9k, not ath for pci
Luis R. Rodriguez [Thu, 3 Sep 2009 00:06:21 +0000 (17:06 -0700)]
ath9k: claim irq for ath9k, not ath for pci

ath9k ahb requests an IRQ and indicates 'ath9k' claimed it,
ath9k pci requests an IRQ and indicates 'ath'   claims it;
since 'ath' is another module sync both ahb and pci to claim
the irq using 'ath9k'.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath9k: propagate errors on ath_init_device() and request_irq()
Luis R. Rodriguez [Thu, 3 Sep 2009 00:02:18 +0000 (17:02 -0700)]
ath9k: propagate errors on ath_init_device() and request_irq()

We've cleaned up ath_init_device() and its children enough
to pass meaninful errors back from probe. When this fails
it means our device could not be initialized and a meaninful
error will have been passed.

Do the same for request_irq() and also synchronize the error
messages while at it.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoath9k: propagate ieee80211_alloc_hw() failure
Luis R. Rodriguez [Wed, 2 Sep 2009 23:34:57 +0000 (16:34 -0700)]
ath9k: propagate ieee80211_alloc_hw() failure

The -ENOMEM was never being passed on failure.
While at it use dev_err() as ahb does upon failure.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoar9170: added phy register initialisation from eeprom values
Joerg Albert [Wed, 2 Sep 2009 23:02:59 +0000 (01:02 +0200)]
ar9170: added phy register initialisation from eeprom values

This patch adds the initialisation of some PHY registers
from the modal_header[] values in the EEPROM
(see otus/hal/hpmain.c, line 333 ff.)

Signed-off-by: Joerg Albert <jal2@gmx.de>
Acked-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agonet_sched: add classful multiqueue dummy scheduler
David S. Miller [Sun, 6 Sep 2009 08:58:51 +0000 (01:58 -0700)]
net_sched: add classful multiqueue dummy scheduler

This patch adds a classful dummy scheduler which can be used as root qdisc
for multiqueue devices and exposes each device queue as a child class.

This allows to address queues individually and graft them similar to regular
classes. Additionally it presents an accumulated view of the statistics of
all real root qdiscs in the dummy root.

Two new callbacks are added to the qdisc_ops and qdisc_class_ops:

- cl_ops->select_queue selects the tx queue number for new child classes.

- qdisc_ops->attach() overrides root qdisc device grafting to attach
  non-shared qdiscs to the queues.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonet_sched: move dev_graft_qdisc() to sch_generic.c
Patrick McHardy [Fri, 4 Sep 2009 06:41:20 +0000 (06:41 +0000)]
net_sched: move dev_graft_qdisc() to sch_generic.c

It will be used in a following patch by the multiqueue qdisc.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonet_sched: reintroduce dev->qdisc for use by sch_api
Patrick McHardy [Fri, 4 Sep 2009 06:41:18 +0000 (06:41 +0000)]
net_sched: reintroduce dev->qdisc for use by sch_api

Currently the multiqueue integration with the qdisc API suffers from
a few problems:

- with multiple queues, all root qdiscs use the same handle. This means
  they can't be exposed to userspace in a backwards compatible fashion.

- all API operations always refer to queue number 0. Newly created
  qdiscs are automatically shared between all queues, its not possible
  to address individual queues or restore multiqueue behaviour once a
  shared qdisc has been attached.

- Dumps only contain the root qdisc of queue 0, in case of non-shared
  qdiscs this means the statistics are incomplete.

This patch reintroduces dev->qdisc, which points to the (single) root qdisc
from userspace's point of view. Currently it either points to the first
(non-shared) default qdisc, or a qdisc shared between all queues. The
following patches will introduce a classful dummy qdisc, which will be used
as root qdisc and contain the per-queue qdiscs as children.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonet_sched: remove some unnecessary checks in classful schedulers
Patrick McHardy [Fri, 4 Sep 2009 06:41:17 +0000 (06:41 +0000)]
net_sched: remove some unnecessary checks in classful schedulers

The class argument to the ->graft(), ->leaf(), ->dump(), ->dump_stats() all
originate from either ->get() or ->walk() and are always valid.

Remove unnecessary checks.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonet_sched: make cls_ops->change and cls_ops->delete optional
Patrick McHardy [Fri, 4 Sep 2009 06:41:16 +0000 (06:41 +0000)]
net_sched: make cls_ops->change and cls_ops->delete optional

Some schedulers don't support creating, changing or deleting classes.
Make the respective callbacks optionally and consistently return
-EOPNOTSUPP for unsupported operations, instead of currently either
-EOPNOTSUPP, -ENOSYS or no error.

In case of sch_prio and sch_multiq, the removed operations additionally
checked for an invalid class. This is not necessary since the class
argument can only orginate from ->get() or in case of ->change is 0
for creation of new classes, in which case ->change() incorrectly
returned -ENOENT.

As a side-effect, this patch fixes a possible (root-only) NULL pointer
function call in sch_ingress, which didn't implement a so far mandatory
->delete() operation.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonet_sched: make cls_ops->tcf_chain() optional
Patrick McHardy [Fri, 4 Sep 2009 06:41:15 +0000 (06:41 +0000)]
net_sched: make cls_ops->tcf_chain() optional

Some qdiscs don't support attaching filters. Handle this centrally in
cls_api and return a proper errno code (EOPNOTSUPP) instead of EINVAL.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonet_sched: fix class grafting errno codes
Patrick McHardy [Fri, 4 Sep 2009 06:41:13 +0000 (06:41 +0000)]
net_sched: fix class grafting errno codes

If the parent qdisc doesn't support classes, use EOPNOTSUPP.
If the parent class doesn't exist, use ENOENT. Currently EINVAL
is returned in both cases.

Additionally check whether grafting is supported and remove a now
unnecessary graft function from sch_ingress.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonetlink: silence compiler warning
Brian Haley [Sat, 5 Sep 2009 03:36:52 +0000 (20:36 -0700)]
netlink: silence compiler warning

  CC      net/netlink/genetlink.o
net/netlink/genetlink.c: In function ‘genl_register_mc_group’:
net/netlink/genetlink.c:139: warning: ‘err’ may be used uninitialized in this function

From following the code 'err' is initialized, but set it to zero to
silence the warning.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agosctp: Catch bogus stream sequence numbers
Vlad Yasevich [Fri, 4 Sep 2009 22:21:03 +0000 (18:21 -0400)]
sctp: Catch bogus stream sequence numbers

Since our TSN map is capable of holding at most a 4K chunk gap,
there is no way that during this gap, a stream sequence number
(unsigned short) can wrap such that the new number is smaller
then the next expected one.  If such a case is encountered,
this is a protocol violation.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: remove dup code in net/sctp/output.c
Wei Yongjun [Fri, 4 Sep 2009 06:34:06 +0000 (14:34 +0800)]
sctp: remove dup code in net/sctp/output.c

Use sctp_packet_reset() instead of dup code.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: turn flags in 'struct sctp_association' into bit fields
Wei Yongjun [Fri, 4 Sep 2009 06:33:19 +0000 (14:33 +0800)]
sctp: turn flags in 'struct sctp_association' into bit fields

This shrinks the size of struct sctp_association a little.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Sysctl configuration for IPv4 Address Scoping
Bhaskar Dutta [Thu, 3 Sep 2009 11:55:47 +0000 (17:25 +0530)]
sctp: Sysctl configuration for IPv4 Address Scoping

This patch introduces a new sysctl option to make IPv4 Address Scoping
configurable <draft-stewart-tsvwg-sctp-ipv4-00.txt>.

In networking environments where DNAT rules in iptables prerouting
chains convert destination IP's to link-local/private IP addresses,
SCTP connections fail to establish as the INIT chunk is dropped by the
kernel due to address scope match failure.
For example to support overlapping IP addresses (same IP address with
different vlan id) a Layer-5 application listens on link local IP's,
and there is a DNAT rule that maps the destination IP to a link local
IP. Such applications never get the SCTP INIT if the address-scoping
draft is strictly followed.

This sysctl configuration allows SCTP to function in such
unconventional networking environments.

Sysctl options:
0 - Disable IPv4 address scoping draft altogether
1 - Enable IPv4 address scoping (default, current behavior)
2 - Enable address scoping but allow IPv4 private addresses in init/init-ack
3 - Enable address scoping but allow IPv4 link local address in init/init-ack

Signed-off-by: Bhaskar Dutta <bhaskar.dutta@globallogic.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Get rid of an extra routing lookup when adding a transport.
Vlad Yasevich [Fri, 4 Sep 2009 22:21:01 +0000 (18:21 -0400)]
sctp: Get rid of an extra routing lookup when adding a transport.

We used to perform 2 routing lookups for a new transport: one
just for path mtu detection, and one to actually route to destination
and path mtu update when sending a packet.  There is no point in doing
both of them, especially since the first one just for path mtu doesn't
take into account source address and sometimes gives the wrong route,
causing path mtu updates anyway.

We now do just the one call to do both route to destination and get
path mtu updates.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Turn flags in 'sctp_packet' into bit fields
Vlad Yasevich [Fri, 4 Sep 2009 22:21:01 +0000 (18:21 -0400)]
sctp: Turn flags in 'sctp_packet' into bit fields

This shrinks the size of sctp_packet a little.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Correctly track if AUTH has been bundled.
Vlad Yasevich [Fri, 4 Sep 2009 22:21:00 +0000 (18:21 -0400)]
sctp: Correctly track if AUTH has been bundled.

We currently track if AUTH has been bundled using the 'auth'
pointer to the chunk.  However, AUTH is disallowed after DATA
is already in the packet, so we need to instead use the
'has_auth' field.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: fix to reset packet information after packet transmit
Wei Yongjun [Wed, 2 Sep 2009 05:05:33 +0000 (13:05 +0800)]
sctp: fix to reset packet information after packet transmit

The packet information does not reset after packet transmit, this
may cause some problems such as following DATA chunk be sent without
AUTH chunk, even if the authentication of DATA chunk has been
requested by the peer.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Failover transmitted list on transport delete
Vlad Yasevich [Fri, 4 Sep 2009 22:21:00 +0000 (18:21 -0400)]
sctp: Failover transmitted list on transport delete

Add-IP feature allows users to delete an active transport.  If that
transport has chunks in flight, those chunks need to be moved to another
transport or association may get into unrecoverable state.

Reported-by: Rafael Laufer <rlaufer@cisco.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Fix SCTP_MAXSEG socket option to comply to spec.
Vlad Yasevich [Fri, 4 Sep 2009 22:21:00 +0000 (18:21 -0400)]
sctp: Fix SCTP_MAXSEG socket option to comply to spec.

We had a bug that we never stored the user-defined value for
MAXSEG when setting the value on an association.  Thus future
PMTU events ended up re-writing the frag point and increasing
it past user limit.  Additionally, when setting the option on
the socket/endpoint, we effect all current associations, which
is against spec.

Now, we store the user 'maxseg' value along with the computed
'frag_point'.  We inherit 'maxseg' from the socket at association
creation and use it as an upper limit for 'frag_point' when its
set.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Don't do NAGLE delay on large writes that were fragmented small
Vlad Yasevich [Fri, 4 Sep 2009 22:20:59 +0000 (18:20 -0400)]
sctp: Don't do NAGLE delay on large writes that were fragmented small

SCTP will delay the last part of a large write due to NAGLE, if that
part is smaller then MTU.  Since we are doing large writes, we might
as well send the last portion now instead of waiting untill the next
large write happens.  The small portion will be sent as is regardless,
so it's better to not delay it.

This is a result of much discussions with Wei Yongjun <yjwei@cn.fujitsu.com>
and Doug Graham <dgraham@nortel.com>.  Many thanks go out to them.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Nagle delay should be based on path mtu
Vlad Yasevich [Fri, 4 Sep 2009 22:20:59 +0000 (18:20 -0400)]
sctp: Nagle delay should be based on path mtu

The decision to delay due to Nagle should be based on the path mtu
and future packet size.  We currently incorrectly base it on
'frag_point' which is the SCTP DATA segment size, and also we do
not count DATA chunk header overhead in the computation.  This
actuall allows situations where a user can set low 'frag_point',
and then send small messages without delay.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Try not to change a_rwnd when faking a SACK from SHUTDOWN.
Vlad Yasevich [Fri, 4 Sep 2009 22:20:59 +0000 (18:20 -0400)]
sctp: Try not to change a_rwnd when faking a SACK from SHUTDOWN.

We currently set a_rwnd to 0 when faking a SACK from SHUTDOWN.
This results in an hung association if the remote only uses
SHUTDOWNs (which it's allowed to do) to acknowlege DATA when
closing.  The reason for that is that we simply honor the a_rwnd
from the sack, but since we faked it to be 0, we enter 0-window
probing.  The fix is to use the peers old rwnd and add our flight
size to it.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: drop a_rwnd to 0 when receive buffer overflows.
Vlad Yasevich [Fri, 4 Sep 2009 22:20:59 +0000 (18:20 -0400)]
sctp: drop a_rwnd to 0 when receive buffer overflows.

SCTP has a problem that when small chunks are used, it is possible
to exhaust the receiver buffer without fully closing receive window.
This happens due to all overhead that we have account for with small
messages.  To fix this, when receive buffer is exceeded, we'll drop
the window to 0 and save the 'drop' portion.  When application starts
reading data and freeing up recevie buffer space, we'll wait until
we've reached the 'drop' window and then add back this 'drop' one
mtu at a time.  This worked well in testing and under stress produced
rather even recovery.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Clear fast_recovery on the transport when T3 timer expires.
Vlad Yasevich [Fri, 4 Sep 2009 22:20:58 +0000 (18:20 -0400)]
sctp: Clear fast_recovery on the transport when T3 timer expires.

If T3 timer expires, we are retransmitting data due to timeout any
any fast recovery is null and void.  We can clear the fast recovery
flag.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Fix error count increments that were results of HEARTBEATS
Vlad Yasevich [Wed, 26 Aug 2009 13:36:25 +0000 (09:36 -0400)]
sctp: Fix error count increments that were results of HEARTBEATS

SCTP RFC 4960 states that unacknowledged HEARTBEATS count as
errors agains a given transport or endpoint.  As such, we
should increment the error counts for only for unacknowledged
HB, otherwise we detect failure too soon.  This goes for both
the overall error count and the path error count.

Now, there is a difference in how the detection is done
between the two.  The path error detection is done after
the increment, so to detect it properly, we actually need
to exceed the path threshold.  The overall error detection
is done _BEFORE_ the increment.  Thus to detect the failure,
it's enough for the error count to match the threshold.
This is why all the state functions use '>=' to detect failure,
while path detection uses '>'.

Thanks goes to Chunbo Luo <chunbo.luo@windriver.com> who first
proposed patches to fix this issue and made me re-read the spec
and the code to figure out how this cruft really works.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: use proc_create()
Alexey Dobriyan [Sun, 23 Aug 2009 19:11:36 +0000 (23:11 +0400)]
sctp: use proc_create()

create_proc_entry() is deprecated (not formally, though).

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: fix check the chunk length of received HEARTBEAT-ACK chunk
Wei Yongjun [Sat, 22 Aug 2009 03:27:37 +0000 (11:27 +0800)]
sctp: fix check the chunk length of received HEARTBEAT-ACK chunk

The receiver of the HEARTBEAT should respond with a HEARTBEAT ACK
that contains the Heartbeat Information field copied from the
received HEARTBEAT chunk. So the received HEARTBEAT-ACK chunk
must have a length of:
  sizeof(sctp_chunkhdr_t) + sizeof(sctp_sender_hb_info_t)

A badly formatted HB-ACK chunk, it is possible that we may access
invalid memory.  We should really make sure that the chunk format
is what we expect, before attempting to touch the data.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: drop SHUTDOWN chunk if the TSN is less than the CTSN
Wei Yongjun [Sat, 22 Aug 2009 03:24:00 +0000 (11:24 +0800)]
sctp: drop SHUTDOWN chunk if the TSN is less than the CTSN

If Cumulative TSN Ack field of SHUTDOWN chunk is less than the
Cumulative TSN Ack Point then drop the SHUTDOWN chunk.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Send user messages to the lower layer as one
Vlad Yasevich [Mon, 10 Aug 2009 17:51:03 +0000 (13:51 -0400)]
sctp: Send user messages to the lower layer as one

Currenlty, sctp breaks up user messages into fragments and
sends each fragment to the lower layer by itself.  This means
that for each fragment we go all the way down the stack
and back up.  This also discourages bundling of multiple
fragments when they can fit into a sigle packet (ex: due
to user setting a low fragmentation threashold).

We introduce a new command SCTP_CMD_SND_MSG and hand the
whole message down state machine.  The state machine and
the side-effect parser will cork the queue, add all chunks
from the message to the queue, and then un-cork the queue
thus causing the chunks to get transmitted.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Try to encourage SACK bundling with DATA.
Vlad Yasevich [Fri, 7 Aug 2009 17:23:28 +0000 (13:23 -0400)]
sctp: Try to encourage SACK bundling with DATA.

If the association has a SACK timer pending and now DATA queued
to be send, we'll try to bundle the SACK with the next application send.
As such, try encourage bundling by accounting for SACK in the size
of the first chunk fragment.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Generate SACKs when actually sending outbound DATA
Vlad Yasevich [Fri, 7 Aug 2009 14:43:07 +0000 (10:43 -0400)]
sctp: Generate SACKs when actually sending outbound DATA

We are now trying to bundle SACKs when we have outbound
DATA to send.  However, there are situations where this
outbound DATA will not be sent (due to congestion or
available window).  In such cases it's ok to wait for the
timer to expire.  This patch refactors the sending code
so that betfore attempting to bundle the SACK we check
to see if the DATA will actually be transmitted.

Based on eirlier works for Doug Graham <dgraham@nortel.com> and
Wei Youngjun <yjwei@cn.fujitsu.com>.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Fix data segmentation with small frag_size
Vlad Yasevich [Fri, 4 Sep 2009 22:20:56 +0000 (18:20 -0400)]
sctp: Fix data segmentation with small frag_size

Since an application may specify the maximum SCTP fragment size
that all data should be fragmented to, we need to fix how
we do segmentation.   Right now, if a user specifies a small
fragment size, the segment size can go negative in the presence
of AUTH or COOKIE_ECHO bundling.

What we need to do is track the largest possbile DATA chunk that
can fit into the mtu.  Then if the fragment size specified is
bigger then this maximum length, we'll shrink it down.  Otherwise,
we just use the smaller segment size without changing it further.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Disallow new connection on a closing socket
Vlad Yasevich [Thu, 30 Jul 2009 22:08:28 +0000 (18:08 -0400)]
sctp: Disallow new connection on a closing socket

If a socket has a lot of association that are in the process of
of being closed/aborted, it is possible for a remote to establish
new associations during the time period that the old ones are shutting
down.  If this was a result of a close() call, there will be no socket
and will cause a memory leak.  We'll prevent this by setting the
socket state to CLOSING and disallow new associations when in this state.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: Fix piggybacked ACKs
Doug Graham [Wed, 29 Jul 2009 16:05:57 +0000 (12:05 -0400)]
sctp: Fix piggybacked ACKs

This patch corrects the conditions under which a SACK will be piggybacked
on a DATA packet.  The previous condition was incorrect due to a
misinterpretation of RFC 4960 and/or RFC 2960.  Specifically, the
following paragraph from section 6.2 had not been implemented correctly:

   Before an endpoint transmits a DATA chunk, if any received DATA
   chunks have not been acknowledged (e.g., due to delayed ack), the
   sender should create a SACK and bundle it with the outbound DATA
   chunk, as long as the size of the final SCTP packet does not exceed
   the current MTU.  See Section 6.2.

When about to send a DATA chunk, the code now checks to see if the SACK
timer is running.  If it is, we know we have a SACK to send to the
peer, so we append the SACK (assuming available space in the packet)
and turn off the timer.  For a simple request-response scenario, this
will result in the SACK being bundled with the response, meaning the
the SACK is received quickly by the client, and also meaning that no
separate SACK packet needs to be sent by the server to acknowledge the
request.  Prior to this patch, a separate SACK packet would have been
sent by the server SCTP only after its delayed-ACK timer had expired
(usually 200ms).  This is wasteful of bandwidth, and can also have a
major negative impact on performance due the interaction of delayed ACKs
with the Nagle algorithm.

Signed-off-by: Doug Graham <dgraham@nortel.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: remove unused union (sctp_cmsg_data_t) definition
Rami Rosen [Thu, 30 Jul 2009 06:38:43 +0000 (09:38 +0300)]
sctp: remove unused union (sctp_cmsg_data_t) definition

This patch removes an unused union definition (sctp_cmsg_data_t)
from include/net/sctp/user.h.

Signed-off-by: Rami Rosen <rosenrami@gmail.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: release cached route when the transport goes down.
Vlad Yasevich [Tue, 23 Jun 2009 15:28:05 +0000 (11:28 -0400)]
sctp: release cached route when the transport goes down.

When the sctp transport is marked down, we can release the
cached route and force a new lookup when attempting to use
this transport for anything.  This way, if a better route
or source address is available, we'll try to use it.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: update the route for non-active transports after addresses are added
Wei Yongjun [Tue, 16 Jun 2009 02:07:23 +0000 (10:07 +0800)]
sctp: update the route for non-active transports after addresses are added

Update the route and saddr entries for the non-active transports as some
of the added addresses can be used as better source addresses, or may
be there is a better route.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: check the unrecognized ASCONF parameter before access it
Wei Yongjun [Tue, 16 Jun 2009 06:48:24 +0000 (14:48 +0800)]
sctp: check the unrecognized ASCONF parameter before access it

This patch fix to check the unrecognized ASCONF parameter before
access it.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agosctp: avoid overwrite the return value of sctp_process_asconf_ack()
Wei Yongjun [Tue, 16 Jun 2009 06:47:30 +0000 (14:47 +0800)]
sctp: avoid overwrite the return value of sctp_process_asconf_ack()

The return value of sctp_process_asconf_ack() may be
overwritten while process parameters with no error.
This patch fixed the problem.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
13 years agonet: Fix a build break because of a typo in drivers/net/3c503.c
Sachin Sant [Fri, 4 Sep 2009 10:41:07 +0000 (03:41 -0700)]
net: Fix a build break because of a typo in drivers/net/3c503.c

Signed-off-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agocan: sja1000: legacy SJA1000 ISA bus driver
Wolfgang Grandegger [Tue, 1 Sep 2009 05:37:33 +0000 (05:37 +0000)]
can: sja1000: legacy SJA1000 ISA bus driver

This patch adds support for legacy SJA1000 CAN controllers on the ISA
or PC-104 bus. The I/O port or memory address and the IRQ number must
be specified via module parameters:

  insmod sja1000_isa.ko port=0x310,0x380 irq=7,11

for ISA devices using I/O ports or:

  insmod sja1000_isa.ko mem=0xd1000,0xd1000 irq=7,11

for memory mapped ISA devices.

Indirect access via address and data port is supported as well:

  insmod sja1000_isa.ko port=0x310,0x380 indirect=1 irq=7,11

Here is a full list of the supported module parameters:

  port:I/O port number (array of ulong)
  mem:I/O memory address (array of ulong)
  indirect:Indirect access via address and data port (array of byte)
  irq:IRQ number (array of int)
  clk:External oscillator clock frequency (default=16000000 [16 MHz])
      (array of int)
  cdr:Clock divider register (default=0x48 [CDR_CBP | CDR_CLK_OFF])
      (array of byte)
  ocr:Output clock register (default=0x18 [OCR_TX0_PUSHPULL])
      (array of byte)

Note: for clk, cdr, ocr, the first argument re-defines the default
for all other devices, e.g.:

 insmod sja1000_isa.ko mem=0xd1000,0xd1000 irq=7,11 clk=24000000

is equivalent to

 insmod sja1000_isa.ko mem=0xd1000,0xd1000 irq=7,11 \
                       clk=24000000,24000000

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Tested-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agocan: sja1000: fix network statistics update
Wolfgang Grandegger [Tue, 1 Sep 2009 05:29:41 +0000 (05:29 +0000)]
can: sja1000: fix network statistics update

The member "tx_bytes" of "struct net_device_stats" should be
incremented when the interrupt is done and an "arbitration
lost error" is a TX error and the statistics should be updated
accordingly.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agocan: add can_free_echo_skb() for upcoming drivers
Wolfgang Grandegger [Tue, 1 Sep 2009 05:26:12 +0000 (05:26 +0000)]
can: add can_free_echo_skb() for upcoming drivers

This patch adds the function can_free_echo_skb to the CAN
device interface to allow upcoming drivers to release echo
skb's in case of error.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoWAN: dscc4: Fix warning pointing out a bug.
David S. Miller [Fri, 4 Sep 2009 04:34:39 +0000 (21:34 -0700)]
WAN: dscc4: Fix warning pointing out a bug.

Noticed by Stephen Rothwell:

Today's linux-next build (x86_64 allmodconfig gcc-4.4.0)
produced this warning:

drivers/net/wan/dscc4.c: In function 'dscc4_rx_skb':
drivers/net/wan/dscc4.c:670: warning: suggest parentheses around comparison in operand of '|'

which actually points out a bug, I think.  It is doing
(x & (y | z)) != y | z
when it probably means
(x & (y | z)) != (y | z)

Introduced by commit 5de3fcab91b0e1809eec030355d15801daf25083
("WAN: bit and/or confusion").

Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoipv6: Fix tcp_v6_send_response(): it didn't set skb transport header
Cosmin Ratiu [Fri, 4 Sep 2009 03:44:38 +0000 (20:44 -0700)]
ipv6: Fix tcp_v6_send_response(): it didn't set skb transport header

Here is a patch which fixes an issue observed when using TCP over IPv6
and AH from IPsec.

When a connection gets closed the 4-way method and the last ACK from
the server gets dropped, the subsequent FINs from the client do not
get ACKed because tcp_v6_send_response does not set the transport
header pointer. This causes ah6_output to try to allocate a lot of
memory, which typically fails, so the ACKs never make it out of the
stack.

I have reproduced the problem on kernel 2.6.7, but after looking at
the latest kernel it seems the problem is still there.

Signed-off-by: Cosmin Ratiu <cratiu@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoenic: organize device initialization/deinit into separate functions
Scott Feldman [Thu, 3 Sep 2009 17:02:45 +0000 (17:02 +0000)]
enic: organize device initialization/deinit into separate functions

To unclutter probe() a little bit, put all device initialization code
in one spot and device deinit code in another spot.  Also remove unused
rq->buf_index variable/func.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoenic: bug fix: check for zero port MTU before posting warning
Scott Feldman [Thu, 3 Sep 2009 17:02:40 +0000 (17:02 +0000)]
enic: bug fix: check for zero port MTU before posting warning

Nic firmware can return zero for port MTU, so check for non-zero value
before checking for change in port MTU.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoenic: changes to driver/firmware interface
Scott Feldman [Thu, 3 Sep 2009 17:02:35 +0000 (17:02 +0000)]
enic: changes to driver/firmware interface

Deprecate some old APIa; change arguments to stats dump all API; add new
interrupt assert API

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoenic: bug fix: enable VLAN filtering
Scott Feldman [Thu, 3 Sep 2009 17:02:29 +0000 (17:02 +0000)]
enic: bug fix: enable VLAN filtering

Bug fix: enable VLAN filtering

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoenic: provision for multiple Rx/Tx queues; prepare for RSS support
Scott Feldman [Thu, 3 Sep 2009 17:02:24 +0000 (17:02 +0000)]
enic: provision for multiple Rx/Tx queues; prepare for RSS support

Provision for multiple Rx/Tx queues.  Max of 8 WQs and 8 RQs.  Max for
completion queue is 8+8=16 and max for interrupt resources is 8+8+2.

Add driver/firmware interface for setting up RSS secret key and indirection
table.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoenic: bug fix: included MAC drops in rx_dropped netstat
Scott Feldman [Thu, 3 Sep 2009 17:02:19 +0000 (17:02 +0000)]
enic: bug fix: included MAC drops in rx_dropped netstat

Bug fix: included MAC drops in rx_dropped netstat.  Also track Rx trunctations
stat at the MAC

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoenic: bug fix: protect fw call i/f with spinlock
Scott Feldman [Thu, 3 Sep 2009 17:02:14 +0000 (17:02 +0000)]
enic: bug fix: protect fw call i/f with spinlock

Some driver -> nic firmware calls weren't guarded with a spinlock, exposing
the call i/f to a race between two threads

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoenic: use netdev_alloc_skb
Scott Feldman [Thu, 3 Sep 2009 17:02:08 +0000 (17:02 +0000)]
enic: use netdev_alloc_skb

Use netdev_alloc_skb rather than dev_alloc_skb

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoenic: bug fix: split TSO fragments larger than 16K into multiple descs
Scott Feldman [Thu, 3 Sep 2009 17:02:03 +0000 (17:02 +0000)]
enic: bug fix: split TSO fragments larger than 16K into multiple descs

enic WQ desc supports a maximum 16K buf size, so split any send fragments
larger than 16K into several descs.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoenic: workaround A0 erratum
Scott Feldman [Thu, 3 Sep 2009 17:01:58 +0000 (17:01 +0000)]
enic: workaround A0 erratum

A0 revision ASIC has an erratum on the RQ desc cache on chip where the
cache can become corrupted causing pkt buf writes to wrong locations.  The s/w
workaround is to post a dummy RQ desc in the ring every 32 descs, causing a
flush of the cache.  A0 parts are not production, but there are enough of
these parts in the wild in test setups to warrant including workaround.  A1
revision ASIC parts fix erratum.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoenic: add support for multiple BARs
Scott Feldman [Thu, 3 Sep 2009 17:01:53 +0000 (17:01 +0000)]
enic: add support for multiple BARs

Nic firmware can place resources (queues, intrs, etc) on multiple BARs, so
allow driver to discover/map resources beyond BAR0.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agovlan: adds drops accounting
Eric Dumazet [Thu, 3 Sep 2009 00:39:16 +0000 (00:39 +0000)]
vlan: adds drops accounting

Its hard to tell if vlans are dropping frames, since
every frame given to vlan_???_start_xmit() functions
is accounted as fully transmitted by lower device.

We can test dev_queue_xmit() return values to
properly account for dropped frames.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agomacvlan: add multiqueue capability
Eric Dumazet [Thu, 3 Sep 2009 00:11:45 +0000 (00:11 +0000)]
macvlan: add multiqueue capability

macvlan devices are currently not multi-queue capable.

We can do that defining rtnl_link_ops method,
get_tx_queues(), called from rtnl_create_link()

This new method gets num_tx_queues/real_num_tx_queues
from lower device.

macvlan_get_tx_queues() is a copy of vlan_get_tx_queues().

Because macvlan_start_xmit() has to update netdev_queue
stats only (and not dev->stats), I chose to change
tx_errors/tx_aborted_errors accounting to tx_dropped,
since netdev_queue structure doesnt define tx_errors /
tx_aborted_errors.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonetdev: Convert MDIO ioctl implementation to use struct mii_ioctl_data
Ben Hutchings [Thu, 3 Sep 2009 10:41:17 +0000 (10:41 +0000)]
netdev: Convert MDIO ioctl implementation to use struct mii_ioctl_data

A few drivers still access the arguments to MDIO ioctls as an array of
u16.  Convert them to use struct mii_ioctl_data.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonetdev: Remove redundant checks for CAP_NET_ADMIN in MDIO implementations
Ben Hutchings [Thu, 3 Sep 2009 10:39:43 +0000 (10:39 +0000)]
netdev: Remove redundant checks for CAP_NET_ADMIN in MDIO implementations

dev_ioctl() already checks capable(CAP_NET_ADMIN) before calling the
driver's implementation of MDIO ioctls.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonetdev: Remove SIOCDEVPRIVATE aliases for MDIO ioctls
Ben Hutchings [Thu, 3 Sep 2009 10:38:33 +0000 (10:38 +0000)]
netdev: Remove SIOCDEVPRIVATE aliases for MDIO ioctls

The standard MDIO ioctl numbers are well-established and these should
no longer be needed.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agosky2: only enable Vaux if capable of wakeup
Stephen Hemminger [Thu, 3 Sep 2009 06:16:25 +0000 (06:16 +0000)]
sky2: only enable Vaux if capable of wakeup

While perusing vendor driver, I saw that it did not enable the Vaux
power unless device was able to wake from lan for D3cold.
This might help for Rene's power issue.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonetxen: fix infinite loop on dma mapping failure
Dhananjay Phadke [Thu, 3 Sep 2009 13:10:55 +0000 (13:10 +0000)]
netxen: fix infinite loop on dma mapping failure

Fix a perpetual while() loop in unwinding partial
mapped tx skb on dma mapping failure.

Reported-by: "Juha Leppanen" <juha_motorsportcom@luukku.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonetxen: remove duplicate napi_add
Dhananjay Phadke [Thu, 3 Sep 2009 13:10:54 +0000 (13:10 +0000)]
netxen: remove duplicate napi_add

Remove duplicate calls to netxen_napi_add().

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonetxen: fix lro buffer allocation
Dhananjay Phadke [Thu, 3 Sep 2009 13:10:53 +0000 (13:10 +0000)]
netxen: fix lro buffer allocation

Alloc 12k skbuffs so that firmware can aggregate more
packets into one buffer. This doesn't raise memory
consumption since 9k skbs use 16k slab cache anyway.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoixgbe: Add support for using FCoE DDP in 82599 as FCoE targets
Yi Zou [Thu, 3 Sep 2009 14:56:31 +0000 (14:56 +0000)]
ixgbe: Add support for using FCoE DDP in 82599 as FCoE targets

The FCoE DDP in 82599 can be used for both FCoE initiator as well as FCoE
target, depending on the indication of the exchange being the responder or
originator in the F_CTL (frame control) field in the encapsulated Fiber
Channel frame header (T10 Spec., FC-FS). For the initiator, OX_ID is used
for FCoE DDP, where for the target RX_ID is used for FCoE DDP.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoixgbe: Distribute transmission of FCoE traffic in 82599
Yi Zou [Thu, 3 Sep 2009 14:56:10 +0000 (14:56 +0000)]
ixgbe: Distribute transmission of FCoE traffic in 82599

This adds a simple selection of a FCoE tx queue based on the current cpu id to
distribute transmission of FCoE traffic evenly among multiple FCoE transmit
queues.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoixgbe: Add support for multiple Tx queues for FCoE in 82599
Yi Zou [Thu, 3 Sep 2009 14:55:50 +0000 (14:55 +0000)]
ixgbe: Add support for multiple Tx queues for FCoE in 82599

This patch adds support for multiple transmit queues to the Fiber Channel
over Ethernet (FCoE) feature found in 82599. Currently, FCoE has multiple
Rx queues available, along with a redirection table, that helps distribute
the I/O load across multiple CPUs based on the FC exchange ID. To make
this the most effective, we need to provide the same layout of transmit
queues to match receive.

Particularly, when Data Center Bridging (DCB) is enabled, the designated
traffic class for FCoE can have dedicated queues for just FCoE traffic,
while not affecting any other type of traffic flow.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoigb: set vf rlpml wasn't taking vlan tag into account
Alexander Duyck [Thu, 3 Sep 2009 14:49:33 +0000 (14:49 +0000)]
igb: set vf rlpml wasn't taking vlan tag into account

This patch updates things so that vlan tags are taken into account when
setting the receive large packet maximum length.  This allows the VF driver
to correctly receive full sized frames when vlans are enabled.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoigb: only disable/enable interrupt bits for igb physical function
Alexander Duyck [Thu, 3 Sep 2009 14:49:15 +0000 (14:49 +0000)]
igb: only disable/enable interrupt bits for igb physical function

The igb_irq_disable/enable calls were causing virtual functions associated
with the igb physical function to have their interrupts disabled.  In order
to prevent this from occuring we should only clear/set the bits related to
the physical function.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>