We currently try to allocate a max_recv_data_segment_length
which can be very large (default is 64K), and common uses
are up to 1MB. It is very very difficult to allocte this
much contiguous memory and it turns out we never even use it.
We really only need a couple of pages, so this patch has us
allocates just what we know what we need today.

Later if vendors start adding vendor specific data and
we need to handle large buffers we can do this, but for
the last 4 years we have not seen anyone do this or request
it.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

iscsi_tcp can send error events from soft irq context so we
cannot use GFP_KERNEL.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

We are touching the cls_session after we have freed
it. This causes a oops.
Signed-off-by: NOr Gerlitz  <ogerlitz@voltaire.com>
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

When we enter recovery and flush the running commands
we cannot freee the connection before flushing the commands.
Some commands may have a reference to the connection
that needs to be released before. iscsi_stop was forcing
the term and suspend too early and was causing a oops
in iser, so this patch removes those callbacks all together
and allows the LLD to handle that detail.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Abort handler fixes.

If a connection is dropped and reconnected while an abort is
running then we should assume the recovery code will clean up
the abort. Not doing so causes a oops.

And if a command completes then we get the status for the abort, we do not
need to call into the LLD to cleanup the resources. Doing this causes
and oops in iser because it ends up freeing some resources twice.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

if iscsi_data_rsp fails we must bail out. Since the pdu values like
data length are invalid we cannot continue to process the data since
it could over run buffers.

This fixes a bug with cisco 5428s where that target is sending
too much data.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The iscsi tcp code can pluck multiple rt2s from the tasks's r2tqueue
in the xmit code. This can result in the task being queued on the xmit queue
but gettting completed at the same time.

This patch fixes the above bug by making the fifo a list so
we always remove the entry on the list del.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

In the xmit patch we are sending a -EXXX value to iscsi_conn_failure
which is causing userspace to get confused.

We should be sending a ISCSI_ERR_* value that userspace understands.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

IOP reset message should be posted to inbound message register
instead of outbound message register.
Signed-off-by: NHighPoint Linux Team <linux@highpoint-tech.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The follow patch fixes a problem for Matt Taggart.
The Compaq system he had (dl380?) has a SmartArray device that exposes
the 53c1510 device in both RAID and "normal" modes. The difference
is in RAID mode, the smart array driver (IIRC) should claim the
device instead of sym2 driver. Patch below prevents sym2 from
claiming the device when the RAID "daughter board" is attached.
Signed-off-by: NGrant Grundler <grundler@parisc-linux.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

This fixes three drivers to compile again after my patch that removes
the data_cmnd member from struct scsi_cmnd.

The fas216 change is trivial, it should have been using ->cmnd all the
time.

NCR53C9 (which seem to be mostly duplicate driver with esp.c!) is doing
something odd, it should only have looked at ->cmnd before not the saved
copy that is kept for the error handlers sake.  Note that it really
should deal with the sync setting themselves but use the generic domain
validation code that get this right - but that's for later let's push
this simple compile fix for now.

And sorry for the late fix for this, I have been busy with OLS and
associated activities last week.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SCSI] esp: Fix build.
  [SPARC]: Fix SA_STATIC_ALLOC value.
  [SPARC64]: Explicitly print return PC when the kernel fault PC is bogus.

* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [IPV4/IPV6]: Setting 0 for unused port field in RAW IP recvmsg().
  [IPV4] ipmr: ip multicast route bug fix.
  [TG3]: Update version and reldate
  [TG3]: Handle tg3_init_rings() failures
  [TG3]: Add tg3_restart_hw()
  [IPV4]: Clear the whole IPCB, this clears also IPCB(skb)->flags.
  [IPV6]: Clean skb cb on IPv6 input.
  [NETFILTER]: Demote xt_sctp to EXPERIMENTAL
  [NETFILTER]: bridge netfilter: add deferred output hooks to feature-removal-schedule
  [NETFILTER]: xt_pkttype: fix mismatches on locally generated packets
  [NETFILTER]: SNMP NAT: fix byteorder confusion
  [NETFILTER]: conntrack: fix SYSCTL=n compile
  [NETFILTER]: nf_queue: handle NF_STOP and unknown verdicts in nf_reinject
  [NETFILTER]: H.323 helper: fix possible NULL-ptr dereference

The patch below moves the cpu hotplugging higher up in the cpufreq
layering; this is needed to avoid recursive taking of the cpu hotplug
lock and to otherwise detangle the mess.

The new rules are:
1. you must do lock_cpu_hotplug() around the following functions:
   __cpufreq_driver_target
   __cpufreq_governor (for CPUFREQ_GOV_LIMITS operation only)
   __cpufreq_set_policy
2. governer methods (.governer) must NOT take the lock_cpu_hotplug()
   lock in any way; they are called with the lock taken already
3. if your governer spawns a thread that does things, like calling
   __cpufreq_driver_target, your thread must honor rule #1.
4. the policy lock and other cpufreq internal locks nest within
   the lock_cpu_hotplug() lock.

I'm not entirely happy about how the __cpufreq_governor rule ended up
(conditional locking rule depending on the argument) but basically all
callers pass this as a constant so it's not too horrible.

The patch also removes the cpufreq_governor() function since during the
locking audit it turned out to be entirely unused (so no need to fix it)

The patch works on my testbox, but it could use more testing
(otoh... it can't be much worse than the current code)
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

From: Tetsuo Handa from-linux-kernel@i-love.sakura.ne.jp

The recvmsg() for raw socket seems to return random u16 value
from the kernel stack memory since port field is not initialized.
But I'm not sure this patch is correct.
Does raw socket return any information stored in port field?

[ BSD defines RAW IP recvmsg to return a sin_port value of zero.
  This is described in Steven's TCP/IP Illustrated Volume 2 on
  page 1055, which is discussing the BSD rip_input() implementation. ]
Acked-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

IP multicast route code was reusing an skb which causes use after free
and double free.

From: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>

Note, it is real skb_clone(), not alloc_skb(). Equeued skb contains
the whole half-prepared netlink message plus room for the rest.
It could be also skb_copy(), if we want to be puristic about mangling
cloned data, but original copy is really not going to be used.  
Acked-by: NStephen Hemminger <shemminger@osdl.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Update version to 3.63.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Handle dev_alloc_skb() failures when initializing the RX rings.
Without proper handling, the driver will crash when using a partial
ring.

Thanks to Stephane Doyon <sdoyon@max-t.com> for reporting the bug and
providing the initial patch.

Howie Xu <howie@vmware.com> also reported the same issue.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add tg3_restart_hw() to handle failures when re-initializing the
device.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The CIC_SEEKY() test really wants to use the minimum of either:

- 2 msecs (not jiffies)

- or, the pending slice time

So code it like that.
Signed-off-by: NJens Axboe <axboe@suse.de>

It should be toggling the same bit on and off, fix it up.
Signed-off-by: NJens Axboe <axboe@suse.de>

We need to postpone the queue startup until after the softirq
handler has actually finished some requests, otherwise we could
be racing with cciss_softirq_done() and not actually restart
the queue handling.
Signed-off-by: NJens Axboe <axboe@suse.de>

Signed-off-by: NGuillaume Chazarain <guichaz@yahoo.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Clear the accumulated junk in IP6CB when starting to handle an IPV6
packet.
Signed-off-by: NGuillaume Chazarain <guichaz@yahoo.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

After the recent problems with all the SCTP stuff it seems reasonable
to mark this as experimental.
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add bridge netfilter deferred output hooks to feature-removal-schedule
and disable them by default. Until their removal they will be
activated by the physdev match when needed.
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Locally generated broadcast and multicast packets have pkttype set to
PACKET_LOOPBACK instead of PACKET_BROADCAST or PACKET_MULTICAST. This
causes the pkttype match to fail to match packets of either type.

The below patch remedies this by using the daddr as a hint as to
broadcast|multicast. While not pretty, this seems like the only way
to solve the problem short of just noting this as a limitation of the
match.

This resolves netfilter bugzilla #484
Signed-off-by: NPhil Oester <kernel@linuxace.com>
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In case of an unknown verdict or NF_STOP the packet leaks. Unknown verdicts
can happen when userspace is buggy. Reinject the packet in case of NF_STOP,
drop on unknown verdicts.
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

An RCF message containing a timeout results in a NULL-ptr dereference if
no RRQ has been seen before.

Noticed by the "SATURN tool", reported by Thomas Dillig <tdillig@stanford.edu>
and Isil Dillig <isil@stanford.edu>.
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The data_cmd[] member got deleted, so do not use it any more.  Scsi
commands do not have their ->cmd[] overwritten temporary to probe for
status after an error before retrying.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

It alises IRQF_SHARED which causes all kinds of
problems.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

That way we'll have at least some debugging info even if
the stack dump explodes.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

dev_alloc_skb is designated for RX descriptors, not TX.  (Some drivers
use it for the latter anyway, but that's a different story)
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

skbuff.h has an #ifndef CONFIG_HAVE_ARCH_DEV_ALLOC_SKB to allow
architectures to reimplement __dev_alloc_skb.  It's not set on any
architecture and now that we have an architecture-overrideable
NET_SKB_PAD there is not point at all to have one either.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When the queue of the underlying device is stopped at initialization time
or the device is marked "not present", the state will be propagated to the
vlan device and never change. Based on an analysis by Patrick McHardy.
Signed-off-by: NStefan Rompf <stefan@loplof.de>
ACKed-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

It doesn't compile, and it's dubious in several regards:

1) is enabled by non-Kconfig controlled CONFIG_* value
   (noted by Randy Dunlap)
2) XFRM6_TUNNEL_SPI_MAGIC is defined after it's first use
3) the debugging messages print object pointer addresses
   which have no meaning without context

So let's just get rid of it.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The Broadcom dongles with HID proxy support actually support SCO over
HCI if the SCO buffer size values are corrected. So instead of disabling
the SCO support, mark this dongle with the quirk for the Bluetooth core
to correct the wrong buffer size values.
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

This patch disables the ISOC transfers for another broken RTX Telecom
based USB dongle. Starting the USB ISOC transfers only ends in a burst
of error messages for invalid SCO packets on connection handle 0.
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>