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12 years agonet/ipv4/ipconfig: neaten __setup placement
Eldad Zack [Sat, 19 May 2012 14:04:39 +0000 (14:04 +0000)]
net/ipv4/ipconfig: neaten __setup placement

The __setup macro should follow the corresponding setup handler.

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: qmi_wwan: Add Vodafone/Huawei K5005 support
Bjørn Mork [Sat, 19 May 2012 07:20:31 +0000 (07:20 +0000)]
net: qmi_wwan: Add Vodafone/Huawei K5005 support

Tested-by: Thomas Schäfer <tschaefer@t-online.de>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: cdc_ether: Add ZTE WWAN matches before generic Ethernet
Andrew Bird (Sphere Systems) [Sat, 19 May 2012 03:56:07 +0000 (03:56 +0000)]
net: cdc_ether: Add ZTE WWAN matches before generic Ethernet

Some ZTE WWAN devices have generic CDC Ether descriptors. Add those
into the whitelist so that we get FLAG_WWAN on the interface

Signed-off-by: Andrew Bird <ajb@spheresystems.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: use skb coalescing in reassembly
Eric Dumazet [Sat, 19 May 2012 03:02:35 +0000 (03:02 +0000)]
ipv6: use skb coalescing in reassembly

ip6_frag_reasm() can use skb_try_coalesce() to build optimized skb,
reducing memory used by them (truesize), and reducing number of cache
line misses and overhead for the consumer.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv4: use skb coalescing in defragmentation
Eric Dumazet [Sat, 19 May 2012 03:02:20 +0000 (03:02 +0000)]
ipv4: use skb coalescing in defragmentation

ip_frag_reasm() can use skb_try_coalesce() to build optimized skb,
reducing memory used by them (truesize), and reducing number of cache
line misses and overhead for the consumer.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: introduce skb_try_coalesce()
Eric Dumazet [Sat, 19 May 2012 03:02:02 +0000 (03:02 +0000)]
net: introduce skb_try_coalesce()

Move tcp_try_coalesce() protocol independent part to
skb_try_coalesce().

skb_try_coalesce() can be used in IPv4 defrag and IPv6 reassembly,
to build optimized skbs (less sk_buff, and possibly less 'headers')

skb_try_coalesce() is zero copy, unless the copy can fit in destination
header (its a rare case)

kfree_skb_partial() is also moved to net/core/skbuff.c and exported,
because IPv6 will need it in patch (ipv6: use skb coalescing in
reassembly).

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet:ipv6:fixed space issues relating to operators.
Jeffrin Jose [Sat, 19 May 2012 01:59:04 +0000 (01:59 +0000)]
net:ipv6:fixed space issues relating to operators.

Fixed space issues relating to operators found by
checkpatch.pl tool in net/ipv6/udp.c

Signed-off-by: Jeffrin Jose <ahiliation@yahoo.co.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet:ipv6:fixed a trailing white space issue.
Jeffrin Jose [Sat, 19 May 2012 01:45:21 +0000 (01:45 +0000)]
net:ipv6:fixed a trailing white space issue.

Fixed a trailing white space issue found by
checkpatch.pl tool in net/ipv6/udp.c

Signed-off-by: Jeffrin Jose <ahiliation@yahoo.co.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: disable GSO on sockets hitting dst_allfrag
Eric Dumazet [Fri, 18 May 2012 21:51:44 +0000 (21:51 +0000)]
ipv6: disable GSO on sockets hitting dst_allfrag

If the allfrag feature has been set on a host route (due to an ICMPv6
Packet Too Big received indicating a MTU of less than 1280), we hit a
very slow behavior in TCP stack, because all big packets are dropped and
only a retransmit timer is able to push one MSS frame every 200 ms.

One way to handle this is to disable GSO on the socket the first time a
super packet is dropped. Adding a specific dst_allfrag() in the fast
path is probably overkill since the dst_allfrag() case almost never
happen.

Result on netperf TCP_STREAM, one flow :

Before : 60 kbit/sec
After : 1.6 Gbit/sec

Reported-by: Tore Anderson <tore@fud.no>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Tore Anderson <tore@fud.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agotg3: use netdev_alloc_frag() API
Eric Dumazet [Fri, 18 May 2012 21:33:39 +0000 (21:33 +0000)]
tg3: use netdev_alloc_frag() API

Update our reference driver to use netdev_alloc_frag() API instead of
the temporary custom allocator I introduced in commit 8d4057a938
(tg3: provide frags as skb head)

This removes the memory leak we had, since we could leak one page at
device dismantle.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Matt Carlson <mcarlson@broadcom.com>
Cc: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: napi_frags_skb() is static
Eric Dumazet [Fri, 18 May 2012 20:49:06 +0000 (20:49 +0000)]
net: napi_frags_skb() is static

No need to export napi_frags_skb()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoppp: avoid false drop_monitor false positives
Eric Dumazet [Fri, 18 May 2012 20:23:00 +0000 (20:23 +0000)]
ppp: avoid false drop_monitor false positives

Call consume_skb() in place of kfree_skb() were appropriate.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: bool/const conversions phase2
Eric Dumazet [Fri, 18 May 2012 18:57:34 +0000 (18:57 +0000)]
ipv6: bool/const conversions phase2

Mostly bool conversions, some inline removals and const additions.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipx: Remove spurious NULL checking in ipx_ioctl().
David S. Miller [Sat, 19 May 2012 04:51:04 +0000 (00:51 -0400)]
ipx: Remove spurious NULL checking in ipx_ioctl().

We already unconditionally dereference 'sk' via lock_sock(sk) earlier
in this function, and our caller (sock_do_ioctl()) makes takes similar
liberties.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: ip6_fragment() should check CHECKSUM_PARTIAL
Eric Dumazet [Fri, 18 May 2012 11:02:15 +0000 (11:02 +0000)]
ipv6: ip6_fragment() should check CHECKSUM_PARTIAL

Quoting Tore Anderson from :

If the allfrag feature has been set on a host route (due to an ICMPv6
Packet Too Big received indicating a MTU of less than 1280),
TCP SYN/ACK packets to that destination appears to get an incorrect
TCP checksum. This in turn means they are thrown away as invalid.

In the case of an IPv4 client behind a link with a MTU of less than
1260, accessing an IPv6 server through a stateless translator,
this means that the client can only download a single large file
from the server, because once it is in the server's routing cache
with the allfrag feature set, new TCP connections can no longer
be established.

</endquote>

It appears ip6_fragment() doesn't handle CHECKSUM_PARTIAL properly.

As network drivers are not prepared to fetch correct transport header, a
safe fix is to call skb_checksum_help() before fragmenting packet.

Reported-by: Tore Anderson <tore@fud.no>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Tore Anderson <tore@fud.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocirrus: cs89x0: Remove function prototypes and reorder declarations
Joe Perches [Fri, 18 May 2012 12:56:31 +0000 (12:56 +0000)]
cirrus: cs89x0: Remove function prototypes and reorder declarations

Move blocks of code around to avoid function prototypes.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocirrus: cs89x0: Neaten debugging and logging
Joe Perches [Fri, 18 May 2012 12:56:30 +0000 (12:56 +0000)]
cirrus: cs89x0: Neaten debugging and logging

Introduce and use a debug macro to test and print.
Convert printks to pr_<level>.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocirrus: cs89x0: Code neatening
Joe Perches [Fri, 18 May 2012 12:56:29 +0000 (12:56 +0000)]
cirrus: cs89x0: Code neatening

Just some stylings.

Use #include <linux... not #include <asm...
Convert a test and print to a printk_once.
Combine an "if (foo) { if (bar) {" to single "if (foo && bar) {"
to save an indent level.
Convert single line "if (foo) bar;" to multiple lines.
Move some braces.
Align some long lines a bit better.

Long lines and printks with KERN_ checkpatch complaints
still exist.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocirrus: cs89x0: Convert printks to pr_<level>
Joe Perches [Fri, 18 May 2012 12:56:28 +0000 (12:56 +0000)]
cirrus: cs89x0: Convert printks to pr_<level>

Use more current logging styles.

Add pr_fmt.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocirrus: cs89x0: Code style neatening
Joe Perches [Fri, 18 May 2012 12:56:27 +0000 (12:56 +0000)]
cirrus: cs89x0: Code style neatening

Neaten the comments and reflow the code without
changing anything other than whitespace.

git diff -w shows just comment neatening and a few
line removals.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agobe2net: Fix to allow get/set of debug levels in the firmware.
Somnath Kotur [Thu, 17 May 2012 22:59:03 +0000 (22:59 +0000)]
be2net: Fix to allow get/set of debug levels in the firmware.

Patch re-spin.
Incorporated review comments by Ben Hutchings.

Signed-off-by: Suresh Reddy <suresh.reddy@emulex.com>
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Acked-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: remove csummode in ip6_append_data()
Eric Dumazet [Fri, 18 May 2012 05:37:56 +0000 (05:37 +0000)]
ipv6: remove csummode in ip6_append_data()

csummode variable is always CHECKSUM_NONE in ip6_append_data()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: introduce netdev_alloc_frag()
Eric Dumazet [Fri, 18 May 2012 05:12:12 +0000 (05:12 +0000)]
net: introduce netdev_alloc_frag()

Fix two issues introduced in commit a1c7fff7e18f5
( net: netdev_alloc_skb() use build_skb() )

- Must be IRQ safe (non NAPI drivers can use it)
- Must not leak the frag if build_skb() fails to allocate sk_buff

This patch introduces netdev_alloc_frag() for drivers willing to
use build_skb() instead of __netdev_alloc_skb() variants.

Factorize code so that :
__dev_alloc_skb() is a wrapper around __netdev_alloc_skb(), and
dev_alloc_skb() a wrapper around netdev_alloc_skb()

Use __GFP_COLD flag.

Almost all network drivers now benefit from skb->head_frag
infrastructure.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoiwlwifi: dont pull too much payload in skb head
Eric Dumazet [Fri, 18 May 2012 04:48:33 +0000 (04:48 +0000)]
iwlwifi: dont pull too much payload in skb head

As iwlwifi use fat skbs, it should not pull too much data in skb->head,
and particularly no tcp data payload, or splice() is slower, and TCP
coalescing is disabled. Copying payload to userland also involves at
least two copies (part from header, part from fragment)

Each layer will pull its header from the fragment as needed.

(on 64bit arches, skb_tailroom(skb) at this point is 192 bytes)

With this patch applied, I have a major reduction of collapsed/pruned
TCP packets, a nice increase of TCPRcvCoalesce counter, and overall
better Internet User experience.

Small packets are still using a fragless skb, so that page can be reused
by the driver.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Johannes Berg <johannes.berg@intel.com>
Cc: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: bool conversions phase1
Eric Dumazet [Fri, 18 May 2012 06:14:11 +0000 (08:14 +0200)]
ipv6: bool conversions phase1

ipv6_opt_accepted() returns a bool, and can use const pointers

ipv6_addr_equal(), ipv6_addr_any(), ipv6_addr_loopback(),
ipv6_addr_orchid() return a bool.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoip_frag: struct inet_frags match() method returns a bool
Eric Dumazet [Fri, 18 May 2012 03:57:13 +0000 (05:57 +0200)]
ip_frag: struct inet_frags match() method returns a bool

- match() method returns a boolean
- return (A && B && C && D) -> return A && B && C && D
- fix indentation

Signed-off-by: Eric Dumazet <edumazet@google.com>
12 years agonet: Remove netdevice ec_ptr, no longer used.
David S. Miller [Fri, 18 May 2012 05:39:43 +0000 (01:39 -0400)]
net: Remove netdevice ec_ptr, no longer used.

ECONET is gone, thus this can be deleted as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoeconet: remove ancient bug ridden protocol
Stephen Hemminger [Fri, 18 May 2012 03:59:51 +0000 (20:59 -0700)]
econet: remove ancient bug ridden protocol

More spring cleaning!

The ancient Econet protocol should go. Most of the bug fixes in recent
years have been fixing security vulnerabilities. The hardware hasn't
been made since the 90s, it is only interesting as an archeological curiosity.

For the truly curious, or insomniac, go read up on it.
  http://en.wikipedia.org/wiki/Econet

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoCS89x0 : Use ioread16/iowrite16 on all platforms
Jaccon Bastiaansen [Thu, 17 May 2012 07:11:42 +0000 (07:11 +0000)]
CS89x0 : Use ioread16/iowrite16 on all platforms

The use of the inw/outw functions by the cs89x0 platform driver
results in NULL pointer references on ARM platforms and
platforms that do not provide ISA-style programmed I/O accessors.

Using inw/outw also accesses the wrong address space on platforms
that have a PCI I/O space that is not identity-mapped into the
physical address space.

Signed-off-by: Jaccon Bastiaansen <jaccon.bastiaansen@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agolapb: Neaten debugging
Joe Perches [Thu, 17 May 2012 10:25:49 +0000 (10:25 +0000)]
lapb: Neaten debugging

Enable dynamic debugging and remove a bunch of #ifdef/#endifs.

Add a lapb_dbg(level, fmt, ...) macro and replace the
printk(KERN_DEBUG uses.
Add pr_fmt and remove embedded prefixes.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agodrivers/net: delete all code/drivers depending on CONFIG_MCA
Paul Gortmaker [Wed, 16 May 2012 23:48:42 +0000 (19:48 -0400)]
drivers/net: delete all code/drivers depending on CONFIG_MCA

The support for CONFIG_MCA is being removed, since the 20
year old hardware simply isn't capable of meeting today's
software demands on CPU and memory resources.

This commit removes any MCA specific net drivers, and removes
any MCA specific probe/support code from drivers that were
doing a dual ISA/MCA role.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: netdev@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
12 years agonet/mlx4_en: num cores tx rings for every UP
Amir Vadai [Thu, 17 May 2012 00:58:10 +0000 (00:58 +0000)]
net/mlx4_en: num cores tx rings for every UP

Change the TX ring scheme such that the number of rings for untagged packets
and for tagged packets (per each of the vlan priorities) is the same, unlike
the current situation where for tagged traffic there's one ring per priority
and for untagged rings as the number of core.

Queue selection is done as follows:

If the mqprio qdisc is operates on the interface, such that the core networking
code invoked the device setup_tc ndo callback, a mapping of skb->priority =>
queue set is forced - for both, tagged and untagged traffic.

Else, the egress map skb->priority =>  User priority is used for tagged traffic, and
all untagged traffic is sent through tx rings of UP 0.

The patch follows the convergence of discussing that issue with John Fastabend
over this thread http://comments.gmane.org/gmane.linux.network/229877

Cc: John Fastabend <john.r.fastabend@intel.com>
Cc: Liran Liss <liranl@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agodrop_monitor: convert to modular building
Neil Horman [Thu, 17 May 2012 10:04:00 +0000 (10:04 +0000)]
drop_monitor: convert to modular building

When I first wrote drop monitor I wrote it to just build monolithically.  There
is no reason it can't be built modularly as well, so lets give it that
flexibiity.

I've tested this by building it as both a module and monolithically, and it
seems to work quite well

Change notes:

v2)
* fixed for_each_present_cpu loops to be more correct as per Eric D.
* Converted exit path failures to BUG_ON as per Ben H.

v3)
* Converted del_timer to del_timer_sync to close race noted by Ben H.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Ben Hutchings <bhutchings@solarflare.com>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: netdev_alloc_skb() use build_skb()
Eric Dumazet [Thu, 17 May 2012 07:34:16 +0000 (07:34 +0000)]
net: netdev_alloc_skb() use build_skb()

netdev_alloc_skb() is used by networks driver in their RX path to
allocate an skb to receive an incoming frame.

With recent skb->head_frag infrastructure, it makes sense to change
netdev_alloc_skb() to use build_skb() and a frag allocator.

This permits a zero copy splice(socket->pipe), and better GRO or TCP
coalescing.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: correct the ipv6 option name - Pad0 to Pad1
Eldad Zack [Thu, 17 May 2012 06:00:25 +0000 (06:00 +0000)]
ipv6: correct the ipv6 option name - Pad0 to Pad1

The padding destination or hop-by-hop option is called Pad1 and not Pad0.

See RFC2460 (4.2) or the IANA ipv6-parameters registry:
http://www.iana.org/assignments/ipv6-parameters/ipv6-parameters.xml

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoetherdevice: fix comments
stephen hemminger [Thu, 17 May 2012 05:17:28 +0000 (05:17 +0000)]
etherdevice: fix comments

Fix some minor problems in comments of etherdevice.h
 * Warning is out dated, file hasn't moved or disappeared in many years and
    is unlikely to do so soon.
 * Capitalize Ethernet consistently since it is a proper name
 * Fix descriptive comment of padding
 * Spelling and grammar fix for alignment comment

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agopppoe: remove unused return value from two methods.
Rami Rosen [Thu, 17 May 2012 05:04:50 +0000 (05:04 +0000)]
pppoe: remove unused return value from two methods.

The patch removes unused return value from __delete_item() and
delete_item() methods in drivers/net/ppp/pppoe.c.

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Thu, 17 May 2012 19:09:09 +0000 (15:09 -0400)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next

12 years agotcp: bool conversions
Eric Dumazet [Wed, 16 May 2012 23:15:34 +0000 (23:15 +0000)]
tcp: bool conversions

bool conversions where possible.

__inline__ -> inline

space cleanups

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoigb: Disable the BMC-to-OS Watchdog Enable bit for DMAC.
Matthew Vick [Sat, 14 Apr 2012 05:20:32 +0000 (05:20 +0000)]
igb: Disable the BMC-to-OS Watchdog Enable bit for DMAC.

Under certain scenarios, it's possible that bursty manageability traffic
over the BMC-to-OS path may overrun the internal manageability receive
buffer causing dropped manageability packets. Clearing this bit prevents
this situation by interrupting coalescing to allow manageability traffic
through.

Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
12 years agoe1000: look in the page and not in skb->data for the last byte
Sebastian Andrzej Siewior [Fri, 11 May 2012 16:30:46 +0000 (16:30 +0000)]
e1000: look in the page and not in skb->data for the last byte

The code seems to want to look at the last byte where the HW puts some
information. Since the skb->data area is never seen by the HW I guess it
does not work as expected. We pass the page address to the HW so I
*think* in order to get to the last byte where the information might be
one should use the page buffer and take a look.
This is of course not more than just compile tested.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
12 years agoe1000: remove workaround for Errata 23 from jumbo alloc
Sebastian Andrzej Siewior [Fri, 11 May 2012 03:21:58 +0000 (03:21 +0000)]
e1000: remove workaround for Errata 23 from jumbo alloc

According to the comment, errata 23 says that the memory we allocate
can't cross a 64KiB boundary. In case of jumbo frames we allocate
complete pages which can never cross the 64KiB boundary because
PAGE_SIZE should be a multiple of 64KiB so we stop either before the
boundary or start after it but never cross it. Furthermore the check
seems bogus because it looks at skb->data which is not seen by the HW
at all because we only pass the DMA address of the page we allocated. So
I *think* the workaround is not required here.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
12 years agoe1000e: fix typo in definition of E1000_CTRL_EXT_FORCE_SMBUS
Bruce Allan [Thu, 10 May 2012 02:34:39 +0000 (02:34 +0000)]
e1000e: fix typo in definition of E1000_CTRL_EXT_FORCE_SMBUS

This define is needed by i217.

Reported-by: Bjorn Mork <bjorn@mork.no>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
12 years agonet: core: Use pr_<level>
Joe Perches [Wed, 16 May 2012 19:58:40 +0000 (19:58 +0000)]
net: core: Use pr_<level>

Use the current logging style.

This enables use of dynamic debugging as well.

Convert printk(KERN_<LEVEL> to pr_<level>.
Add pr_fmt. Remove embedded prefixes, use
%s, __func__ instead.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: ipv6: ndisc: Neaten ND_PRINTx macros
Joe Perches [Wed, 16 May 2012 19:28:38 +0000 (19:28 +0000)]
net: ipv6: ndisc: Neaten ND_PRINTx macros

Why use several macros when one will do?

Convert the multiple ND_PRINTKx macros to a single
ND_PRINTK macro.  Use the new net_<level>_ratelimited
mechanism too.

Add pr_fmt with "ICMPv6: " as prefix.
Remove embedded ICMPv6 prefixes from messages.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agopktgen: Use pr_debug
Joe Perches [Wed, 16 May 2012 17:50:41 +0000 (17:50 +0000)]
pktgen: Use pr_debug

Convert printk(KERN_DEBUG to pr_debug which can
enable dynamic debugging.

Remove embedded prefixes from the conversions as
pr_fmt adds them.

Align arguments.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: include/net/sock.h cleanup
Eric Dumazet [Wed, 16 May 2012 22:48:15 +0000 (22:48 +0000)]
net: include/net/sock.h cleanup

bool/const conversions where possible

__inline__ -> inline

space cleanups

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoisdn: remove duplicate NULL check
Dan Carpenter [Wed, 16 May 2012 20:51:02 +0000 (20:51 +0000)]
isdn: remove duplicate NULL check

We test both "!skb_out" and "skb_out" here which is duplicative and
causes a static checker warning.  I considered that the intent might
have been to test "skb_in" but that's a valid pointer here.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: l2tp: Standardize logging styles
Joe Perches [Wed, 16 May 2012 09:55:56 +0000 (09:55 +0000)]
net: l2tp: Standardize logging styles

Use more current logging styles.

Add pr_fmt to prefix output appropriately.
Convert printks to pr_<level>.
Convert PRINTK macros to new l2tp_<level> macros.
Neaten some <foo>_refcount debugging macros.
Use print_hex_dump_bytes instead of hand-coded loops.
Coalesce formats and align arguments.

Some KERN_DEBUG output is not now emitted unless
dynamic_debugging is enabled.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Thu, 17 May 2012 02:17:37 +0000 (22:17 -0400)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

12 years agonetfilter: nf_ct_h323: fix usage of MODULE_ALIAS_NFCT_HELPER
Pablo Neira Ayuso [Sun, 13 May 2012 22:42:02 +0000 (00:42 +0200)]
netfilter: nf_ct_h323: fix usage of MODULE_ALIAS_NFCT_HELPER

ctnetlink uses the aliases that are created by MODULE_ALIAS_NFCT_HELPER
to auto-load the module based on the helper name. Thus, we have to use
RAS, Q.931 and H.245, not H.323.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
12 years agonetfilter: xt_CT: remove redundant header include
Eldad Zack [Wed, 9 May 2012 12:03:35 +0000 (12:03 +0000)]
netfilter: xt_CT: remove redundant header include

nf_conntrack_l4proto.h is included twice.

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
12 years agonetfilter: ipset: fix timeout value overflow bug
Jozsef Kadlecsik [Mon, 7 May 2012 02:35:44 +0000 (02:35 +0000)]
netfilter: ipset: fix timeout value overflow bug

Large timeout parameters could result wrong timeout values due to
an overflow at msec to jiffies conversion (reported by Andreas Herz)

[ This patch was mangled by Pablo Neira Ayuso since David Laight and
  Eric Dumazet noticed that we were using hardcoded 1000 instead of
  MSEC_PER_SEC to calculate the timeout ]

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
12 years agonetfilter: nf_ct_tcp: extend log message for invalid ignored packets
Pablo Neira Ayuso [Mon, 14 May 2012 08:55:03 +0000 (10:55 +0200)]
netfilter: nf_ct_tcp: extend log message for invalid ignored packets

Extend log message if packets are ignored to include the TCP state, ie.
replace:

[ 3968.070196] nf_ct_tcp: invalid packet ignored IN= OUT= SRC=...

by:

[ 3968.070196] nf_ct_tcp: invalid packet ignored in state ESTABLISHED IN= OUT= SRC=...

This information is useful to know in what state we were while ignoring the
packet.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
12 years agonetfilter: xt_HMARK: modulus is expensive for hash calculation
Pablo Neira Ayuso [Mon, 14 May 2012 00:01:46 +0000 (02:01 +0200)]
netfilter: xt_HMARK: modulus is expensive for hash calculation

Use:

((u64)(HASH_VAL * HASH_SIZE)) >> 32

as suggested by David S. Miller.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
12 years agonetfilter: xt_HMARK: potential NULL dereference in get_inner_hdr()
Dan Carpenter [Sat, 12 May 2012 01:00:03 +0000 (01:00 +0000)]
netfilter: xt_HMARK: potential NULL dereference in get_inner_hdr()

There is a typo in the error checking and "&&" was used instead of "||".
If skb_header_pointer() returns NULL then it leads to a NULL
dereference.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
12 years agonetfilter: xt_hashlimit: use _ALL macro to reject unknown flag bits
Florian Westphal [Thu, 10 May 2012 22:11:54 +0000 (22:11 +0000)]
netfilter: xt_hashlimit: use _ALL macro to reject unknown flag bits

David Miller says:
     The canonical way to validate if the set bits are in a valid
     range is to have a "_ALL" macro, and test:
     if (val & ~XT_HASHLIMIT_ALL)
         goto err;"

make it so.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
12 years agoMerge git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Wed, 16 May 2012 21:30:51 +0000 (14:30 -0700)]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm powerpc fixes from Marcelo Tosatti:
 "Urgent KVM PPC updates, quoting Alexander Graf:

    There are a few bugs in 3.4 that really should be fixed before
    people can be all happy and fuzzy about KVM on PowerPC.  These fixes
    are:

     * fix POWER7 bare metal with PR=y
     * fix deadlock on HV=y book3s_64 mode in low memory cases
     * fix invalid MMU scope of PR=y mode on book3s_64, possibly eading
       to memory corruption"

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: PPC: Book3S HV: Fix bug leading to deadlock in guest HPT updates
  powerpc/kvm: Fix VSID usage in 64-bit "PR" KVM
  KVM: PPC: Book3S: PR: Fix hsrr code
  KVM: PPC: Fix PR KVM on POWER7 bare metal
  KVM: PPC: Book3S: PR: Handle EMUL_ASSIST

12 years agoMerge tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Wed, 16 May 2012 21:29:45 +0000 (14:29 -0700)]
Merge tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A few last-minute regression fixes for 3.4 final kernel.  All trivial,
  and Cc'ed to stable kernel."

* tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: wm8994: Fix AIF2ADC power down
  ALSA: hda/idt - Fix power-map for speaker-pins with some HP laptops
  ASoC: cs42l73: Sync digital mixer kcontrols to allow for 0dB

12 years agoMerge tag 'rproc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad...
Linus Torvalds [Wed, 16 May 2012 21:26:05 +0000 (14:26 -0700)]
Merge tag 'rproc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc

Pull remoteproc fix from Ohad Ben-Cohen:
 "Fix a nasty off-by-one remoteproc bug which leaks memory when a remote
  processor is shut down and, on certain circumstances, can indirectly
  prevent it from being reloaded."

* tag 'rproc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc:
  remoteproc: fix off-by-one bug in __rproc_free_vrings

12 years agoMerge git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Wed, 16 May 2012 21:22:38 +0000 (14:22 -0700)]
Merge git://git.samba.org/sfrench/cifs-2.6

Pull CIFS fix from Jeff Layton

* git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix misspelling of "forcedirectio"

12 years agoMerge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux...
Linus Torvalds [Wed, 16 May 2012 21:21:41 +0000 (14:21 -0700)]
Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

Pull two Tile arch fixes from Chris Metcalf:
 "These are both bug-fixes, one to avoid some issues in how we invoke
  the "pending userspace work" flags on return to userspace, and the
  other to provide the same signal handler arguments for tilegx32 that
  we do for tilegx64."

* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  arch/tile: apply commit 74fca9da0 to the compat signal handling as well
  arch/tile: fix up some issues in calling do_work_pending()

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 16 May 2012 20:14:52 +0000 (13:14 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Pull networking tree from David Miller:

1) ptp_pch driver build broke during this merge window due to missing
   slab.h header, fix from Geery Uytterhoeven.

2) If ipset passes in a bogus hash table size we crash because the size
   is not validated properly.  Compounding this, gcc-4.7 can miscompile
   ipset such that even when the user specifies legitimate parameters
   the tool passes in an out-of-range size to the kernel.

   Fix from Jozsef Kadlecsik.

3) Users have reported that the netdev watchdog can trigger with pch_gbe
   devices, and it turns out this is happening because of races in the
   TX path of the driver leading to the transmitter hanging.  Fix from
   Eric Dumazet, reported and tested by Andy Cress.

4) Novatel USB551L devices match the generic class entries for the cdc
   ethernet USB driver, but they don't work because they have generic
   descriptors and thus need FLAG_WWAN to function properly.

   Add the necessary ID table entry to fix this, from Dan Williams.

5) A recursive locking fix in the USBNET driver added a new problem, in
   that packet list traversal is now racy and we can thus access
   unlinked SKBs and crash.

   Avoid this situation by adding some extra state tracking, from Ming
   Lei.

6) The rtlwifi conversion to asynchronous firmware loading is racy, fix
   by reordering the probe procedure.  From Larry Finger.

Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=43187
7) Fix regressions with bluetooth keyboards by notifying userland
   properly when the security level changes, from Gustavo Padovan.

8) Bluetooth needs to make sure device connected events are emitted
   before other kinds of events, otherwise userspace will think there is
   no baseband link yet and therefore abort the sockets associated with
   that connection.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  netfilter: ipset: fix hash size checking in kernel
  ptp_pch: Add missing #include <linux/slab.h>
  pch_gbe: fix transmit races
  cdc_ether: add Novatel USB551L device IDs for FLAG_WWAN
  usbnet: fix skb traversing races during unlink(v2)
  Bluetooth: mgmt: Fix device_connected sending order
  Bluetooth: notify userspace of security level change
  rtlwifi: fix for race condition when firmware is cached

12 years agoarch/tile: apply commit 74fca9da0 to the compat signal handling as well
Chris Metcalf [Wed, 16 May 2012 18:54:20 +0000 (14:54 -0400)]
arch/tile: apply commit 74fca9da0 to the compat signal handling as well

This passes siginfo and mcontext to tilegx32 signal handlers that
don't have SA_SIGINFO set just as we have been doing for tilegx64.

Cc: stable@vger.kernel.org
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
12 years agoarch/tile: fix up some issues in calling do_work_pending()
Chris Metcalf [Sat, 28 Apr 2012 22:51:43 +0000 (18:51 -0400)]
arch/tile: fix up some issues in calling do_work_pending()

First, we were at risk of handling thread-info flags, in particular
do_signal(), when returning from kernel space.  This could happen
after a failed kernel_execve(), or when forking a kernel thread.
The fix is to test in do_work_pending() for user_mode() and return
immediately if so; we already had this test for one of the flags,
so I just hoisted it to the top of the function.

Second, if a ptraced process updated the callee-saved registers
in the ptregs struct and then processed another thread-info flag, we
would overwrite the modifications with the original callee-saved
registers.  To fix this, we add a register to note if we've already
saved the registers once, and skip doing it on additional passes
through the loop.  To avoid a performance hit from the couple of
extra instructions involved, I modified the GET_THREAD_INFO() macro
to be guaranteed to be one instruction, then bundled it with adjacent
instructions, yielding an overall net savings.

Reported-By: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
12 years agonetfilter: ipset: fix hash size checking in kernel
Jozsef Kadlecsik [Mon, 14 May 2012 01:47:01 +0000 (01:47 +0000)]
netfilter: ipset: fix hash size checking in kernel

The hash size must fit both into u32 (jhash) and the max value of
size_t. The missing checking could lead to kernel crash, bug reported
by Seblu.

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoqeth: recognize vlan devices in layer3 mode
frank.blaschka@de.ibm.com [Wed, 16 May 2012 01:28:26 +0000 (01:28 +0000)]
qeth: recognize vlan devices in layer3 mode

The qeth layer3 driver is notified about IP address changes.
Changes concerning qeth driven network interfaces have to be
forwarded to the OSA-card. This includes IP addresses of VLAN
interfaces with a qeth device as base device. Function
qeth_l3_verify_vlan_dev() determines if the net_device of the
IP event belongs to a vlan device belonging to a qeth device
as real device. This function is broken starting with commit
7ff0bcf676f7ed224ce21b58c7858c8e527068b2 , which means IP
addresses of VLAN devices are no longer set at the base qeth
device. The patch repairs function qeth_l3_verify_vlan_dev().

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoqeth: remove token ring part 2
Frank Blaschka [Wed, 16 May 2012 01:28:25 +0000 (01:28 +0000)]
qeth: remove token ring part 2

Commit 1abd2296b4a1ee7b6a883541c3ede52042a09521 starts removing
token ring from qeth_l3. This patch removes the rest of token
ring related code from the driver.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: sock_flag() cleanup
Eric Dumazet [Wed, 16 May 2012 05:57:07 +0000 (05:57 +0000)]
net: sock_flag() cleanup

- sock_flag() accepts a const pointer

- sock_flag() returns a boolean

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agofq_codel: should use qdisc backlog as threshold
Eric Dumazet [Wed, 16 May 2012 04:39:09 +0000 (04:39 +0000)]
fq_codel: should use qdisc backlog as threshold

codel_should_drop() logic allows a packet being not dropped if queue
size is under max packet size.

In fq_codel, we have two possible backlogs : The qdisc global one, and
the flow local one.

The meaningful one for codel_should_drop() should be the global backlog,
not the per flow one, so that thin flows can have a non zero drop/mark
probability.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Dave Taht <dave.taht@bufferbloat.net>
Cc: Kathleen Nichols <nichols@pollere.com>
Cc: Van Jacobson <van@pollere.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomISDN: Implement MISDN_CTRL_RX_OFF for more drivers
Karsten Keil [Tue, 15 May 2012 23:51:08 +0000 (23:51 +0000)]
mISDN: Implement MISDN_CTRL_RX_OFF for more drivers

MISDN_CTRL_RX_OFF is a meachanism to discard RX data in the driver if
the data is not needed by the application. It can be used when playing
mesages, but not recording or with unidirectional protocols.

Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomISDN: Implement MISDN_CTRL_FILL_EMPTY for more drivers
Karsten Keil [Tue, 15 May 2012 23:51:07 +0000 (23:51 +0000)]
mISDN: Implement MISDN_CTRL_FILL_EMPTY for more drivers

MISDN_CTRL_FILL_EMPTY is a meachanism to send a fixed value (normally silence)
as long no data from upper layers is available. It can be used when recording
voice messages or with unidirectional protocols.

Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomISDN: Allow to set a minimum length for transparent data
Karsten Keil [Tue, 15 May 2012 23:51:06 +0000 (23:51 +0000)]
mISDN: Allow to set a minimum length for transparent data

If the FIFO of the card is small, many short messages are queued up to
the upper layers and the userspace. This change allows the applications
to set a minimum datalen they want from the drivers.
Create a common control function to avoid code duplication in each
driver.

Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomISDN: Reduce RX buffer allocation for transparent data
Karsten Keil [Tue, 15 May 2012 23:51:05 +0000 (23:51 +0000)]
mISDN: Reduce RX buffer allocation for transparent data

We did allways allocate maxsize buffers, but for transparent data we know
the actual size.
Use a common function to calculate size and detect overflows.

Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomISDN: Bugfix hfcsusb: usb endpoint activation/deactivation
Martin Bachem [Tue, 15 May 2012 23:51:04 +0000 (23:51 +0000)]
mISDN: Bugfix hfcsusb: usb endpoint activation/deactivation

Here was a off by one in the activation/deactivation.
The additional activation in open_bchannel() did hide
it, but only if you do not try to use B2.

Signed-off-by: Martin Bachem <info@colognechip.com>
Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomISDN: avmfritz use the bigger fifo of chip version 2
Karsten Keil [Tue, 15 May 2012 23:51:03 +0000 (23:51 +0000)]
mISDN: avmfritz use the bigger fifo of chip version 2

If we detect the latest hardware revision we should use the bigger fifo
to avoid TX underruns and have less interrupts.
TX underruns should be logged as warning.

Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomISDN: Early confirm for transparent data
Karsten Keil [Tue, 15 May 2012 23:51:02 +0000 (23:51 +0000)]
mISDN: Early confirm for transparent data

It is better to send a confirm for transparent data early as possible
to avoid TX underuns.

Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomISDN: Cleanup channel also if it already was deactivated
Karsten Keil [Tue, 15 May 2012 23:51:01 +0000 (23:51 +0000)]
mISDN: Cleanup channel also if it already was deactivated

If a channel was closed after it was deactivated it could happen that
something was not proper resetted. The test if a channel is still activ
was wrong, so remove it and always do the cleanup.

Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoDocumentation/networking/ieee802154: update MAC chapter
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:31 +0000 (20:50 +0000)]
Documentation/networking/ieee802154: update MAC chapter

Update the documentation according to latest changes.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agodrivers/ieee802154: IEEE 802.15.4 loopback driver
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:30 +0000 (20:50 +0000)]
drivers/ieee802154: IEEE 802.15.4 loopback driver

Add support for IEEE 802.15.4 loopback driver - useful development
and debugging tool.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomac802154: monitor device support
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:29 +0000 (20:50 +0000)]
mac802154: monitor device support

Support for monitor device intended to capture all the network activity.
This interface could be used by networks sniffers and is already
supported by WireShark. That's a good test point to check that basic
MAC support works.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomac802154: slaves management support
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:28 +0000 (20:50 +0000)]
mac802154: slaves management support

This patch adds functionality for registration and removing slaves
in the stack.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoieee802154: interface type to be added
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:27 +0000 (20:50 +0000)]
ieee802154: interface type to be added

This stack implementation distinguishes several types of slave
interfaces. Another parameter to 'add_iface_' function is added
to clarify the interface type is going to be registered.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomac802154: basic mib support
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:26 +0000 (20:50 +0000)]
mac802154: basic mib support

Basic support for IEEE 802.15.4 management information base.
Current implementation contains a command to set HW address only.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomac802154: basic MAC commands interface support
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:25 +0000 (20:50 +0000)]
mac802154: basic MAC commands interface support

Declare set of MAC-commands for reduced functionality interface.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomac802154: slave interfaces declaration
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:24 +0000 (20:50 +0000)]
mac802154: slave interfaces declaration

Slaves represent typical network interfaces available from userspace.
Each ieee802154 device/transceiver may have several slaves and able
to be associated with several networks at the same time. So this
patch adds structure for slaves declaration.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomac802154: declare reduced mlme operations
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:23 +0000 (20:50 +0000)]
mac802154: declare reduced mlme operations

According IEEE 802.15.4 standard each node can be either full functionality
device (FFD) or reduce functionality device (RFD). So 2 sets of operations
are needed. This patch declare RFD operations structure.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomac802154: TX data path
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:22 +0000 (20:50 +0000)]
mac802154: TX data path

Main TX data path implementation between upper and physical layers.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomac802154: RX data path
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:21 +0000 (20:50 +0000)]
mac802154: RX data path

Main RX data path implementation between physical and mac layers.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomac802154: allocation of ieee802154 device
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:20 +0000 (20:50 +0000)]
mac802154: allocation of ieee802154 device

An interface to allocate and register ieee802154 compatible device.
The allocated device has the following representation in memory:

+-----------------------+
| struct wpan_phy       |
+-----------------------+
| struct mac802154_priv |
+-----------------------+
| driver's private data |
+-----------------------+

Used by device drivers to register new instance in the stack.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomac802154: basic ieee802.15.4 device structures
alex.bluesman.smirnov@gmail.com [Tue, 15 May 2012 20:50:19 +0000 (20:50 +0000)]
mac802154: basic ieee802.15.4 device structures

The IEEE 802.15.4 Working Group focuses on the standardization of the
bottom two layers of ISO/OSI protocol stack: Physical (PHY) and MAC.
The MAC layer provides access control to a shared channel and reliable
data delivery. The main functions performed by the MAC sublayer are:
association and disassociation, security control, optional star
network topology functions, such as beacon generation and Guaranteed
Time Slots (GTSs) management, generation of ACK frames (if used), and,
finally, application support for the two possible network topologies
described in the standard.

This is an initial commit which describes main data structures needed
for ieee802.15.4 compatible devices representation in the MAC layer.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoptp_pch: Add missing #include <linux/slab.h>
Geert Uytterhoeven [Wed, 16 May 2012 01:50:17 +0000 (01:50 +0000)]
ptp_pch: Add missing #include <linux/slab.h>

drivers/ptp/ptp_pch.c: In function 'pch_remove':
drivers/ptp/ptp_pch.c:576:2: error: implicit declaration of function 'kfree' [-Werror=implicit-function-declaration]
drivers/ptp/ptp_pch.c: In function 'pch_probe':
drivers/ptp/ptp_pch.c:587:2: error: implicit declaration of function 'kzalloc' [-Werror=implicit-function-declaration]

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocifs: fix misspelling of "forcedirectio"
Jeff Layton [Wed, 16 May 2012 11:12:26 +0000 (07:12 -0400)]
cifs: fix misspelling of "forcedirectio"

...and add a "directio" synonym since that's what the manpage has
always advertised.

Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
12 years agoKVM: PPC: Book3S HV: Fix bug leading to deadlock in guest HPT updates
Paul Mackerras [Wed, 9 May 2012 23:49:24 +0000 (23:49 +0000)]
KVM: PPC: Book3S HV: Fix bug leading to deadlock in guest HPT updates

When handling the H_BULK_REMOVE hypercall, we were forgetting to
invalidate and unlock the hashed page table entry (HPTE) in the case
where the page had been paged out.  This fixes it by clearing the
first doubleword of the HPTE in that case.

This fixes a regression introduced in commit a92bce95f0 ("KVM: PPC:
Book3S HV: Keep HPTE locked when invalidating").  The effect of the
regression is that the host kernel will sometimes hang when under
memory pressure.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
12 years agopowerpc/kvm: Fix VSID usage in 64-bit "PR" KVM
Benjamin Herrenschmidt [Fri, 23 Mar 2012 00:21:14 +0000 (11:21 +1100)]
powerpc/kvm: Fix VSID usage in 64-bit "PR" KVM

The code forgot to scramble the VSIDs the way we normally do
and was basically using the "proto VSID" directly with the MMU.

This means that in practice, KVM used random VSIDs that could
collide with segments used by other user space programs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[agraf: simplify ppc32 case]
Signed-off-by: Alexander Graf <agraf@suse.de>
12 years agoKVM: PPC: Book3S: PR: Fix hsrr code
Alexander Graf [Thu, 10 May 2012 01:58:50 +0000 (03:58 +0200)]
KVM: PPC: Book3S: PR: Fix hsrr code

When jumping back into the kernel to code that knows that it would be
using HSRR registers instead of SRR registers, we need to make sure we
pass it all information on where to jump to in HSRR registers.

Unfortunately, we used r10 to store the information to distinguish between
the HSRR and SRR case. That register got clobbered in between though,
rendering the later comparison invalid.

Instead, let's use cr1 to store this information. That way we don't
need yet another register and everyone's happy.

This fixes PR KVM on POWER7 bare metal for me.

Signed-off-by: Alexander Graf <agraf@suse.de>
12 years agoKVM: PPC: Fix PR KVM on POWER7 bare metal
Alexander Graf [Fri, 27 Apr 2012 14:33:35 +0000 (16:33 +0200)]
KVM: PPC: Fix PR KVM on POWER7 bare metal

When running on a system that is HV capable, some interrupts use HSRR
SPRs instead of the normal SRR SPRs. These are also used in the Linux
handlers to jump back to code after an interrupt got processed.

Unfortunately, in our "jump back to the real host handler after we've
done the context switch" code, we were only setting the SRR SPRs,
rendering Linux to jump back to some invalid IP after it's processed
the interrupt.

This fixes random crashes on p7 opal mode with PR KVM for me.

Signed-off-by: Alexander Graf <agraf@suse.de>
12 years agoKVM: PPC: Book3S: PR: Handle EMUL_ASSIST
Alexander Graf [Thu, 10 May 2012 01:54:58 +0000 (03:54 +0200)]
KVM: PPC: Book3S: PR: Handle EMUL_ASSIST

In addition to normal "priviledged instruction" traps, we can also receive
"emulation assist" traps on newer hardware that has the HV bit set.

Handle that one the same way as a privileged instruction, including the
instruction fetching. That way we don't execute old instructions that we
happen to still leave in that field when an emul assist trap comes.

This fixes -M mac99 / -M g3beige on p7 bare metal for me.

Signed-off-by: Alexander Graf <agraf@suse.de>
12 years agoisdn: Fix typo in hfcmulti.c
Masanari Iida [Tue, 15 May 2012 09:06:39 +0000 (09:06 +0000)]
isdn: Fix typo in hfcmulti.c

Correcting spelling "extenal" to "external" in hfcmulti.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
12 years agoMerge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
David S. Miller [Wed, 16 May 2012 05:03:54 +0000 (01:03 -0400)]
Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless

John Linville says:

Here are three more fixes that some of my developers are desperate to
see included in 3.4...

Johan Hedberg went to some length justifyng the inclusion of these two
Bluetooth fixes:

"The device_connected fix should be quite self-explanatory, but it's
actually a wider issue than just for keyboards. All profiles that do
incoming connection authorization (e.g. headsets) will break without it
with specific hardware. The reason it wasn't caught earlier is that it
only occurs with specific Bluetooth adapters.

As for the security level patch, this fixes L2CAP socket based security
level elevation during a connection. The HID profile needs this (for
keyboards) and it is the only way to achieve the security level
elevation when using the management interface to talk to the kernel
(hence the management enabling patch being the one that exposes this"

The rtlwifi fix addresses a regression related to firmware loading,
as described in kernel.org bug 43187.  It basically just moves a hunk
of code to a more appropriate place.

Signed-off-by: David S. Miller <davem@davemloft.net>