For the cases where a lot of interfaces are used in conjunction with a
lot of LLC sockets bound to the same SAP, the iteration of the socket
list becomes prohibitively expensive.

Replacing the list with a a local address based hash significantly
improves the bind and listener lookup operations as well as the
datagram delivery.

Connected sockets delivery is also improved, but this patch does not
address the case where we have lots of sockets with the same local
address connected to different remote addresses.

In order to keep the socket sanity checks alive and fast a socket
counter was added to the SAP structure.
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch adds a per SAP device based hash table to solve the
multicast delivery scalability issue when we have large number of
interfaces and a large number of sockets bound to the same SAP.
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Optimize multicast delivery by doing the actual delivery without
holding the lock. Based on the same approach used in UDP code.
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

For the reclamation phase we use the SLAB_DESTROY_BY_RCU mechanism,
which require some extra checks in the lookup code:

a) If the current socket was released, reallocated & inserted in
another list it will short circuit the iteration for the current list,
thus we need to restart the lookup.

b) If the current socket was released, reallocated & inserted in the
same list we just need to recheck it matches the look-up criteria and
if not we can skip to the next element.

In this case there is no need to restart the lookup, since sockets are
inserted at the start of the list and the worst that will happen is
that we will iterate throught some of the list elements more then
once.

Note that the /proc and multicast delivery was not yet converted to
RCU, it still uses spinlocks for protection.
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Using bind(MAC address) with LLC sockets has O(n) complexity, where n
is the number of interfaces. To overcome this, we add support for
SO_BINDTODEVICE which drops the complexity to O(1).
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Using dev_hard_header allows us to use LLC with VLANs and potentially
other Ethernet/TokernRing specific encapsulations. It also removes code
duplication between LLC and Ethernet/TokenRing core code.
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Apparently some awk versions choke on C-style comments -- who knew? :-)
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Some misc changes to cleanup whitespace issues and fix/remove some #define
HW defintions.

1) fix some whitespace issues
2) more verbose err msg when resources aren't available to configure vnic
3) remove unused #define
4) fix RSS #define rss hash types
Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com>
Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Only rx_usec and tx_usec options for ethtool -C are settable as those
are the only settings that make sense to HW.  Adds driver reporting of
intr coalescing timer value in usec units rather than HW units.
Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com>
Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Previous driver was aligning ring sizes to 16 descs, but hardware actually
wants desc ring sizes to be aligned to 32 descs.
Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com>
Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In set_multicast(), only push pkt filter changes down to firmware if
pkt filter actually changes.
Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com>
Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

During dev->open(), make sure we get at least one skb on the Rx ring.
Otherwise abort the interface load.  Also, if we get skb allocation
failures in NAPI poll while trying to replenish the ring, try again
later so we don't end up starving out the Rx ring completely.
Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com>
Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fix dev->stop shutdown bug where driver was stopping xmit queue and then
disabling intrs.  Fix is to disable intrs first and then stop the xmit
queue, otherwise an interrupt could cause the queue to be rewoken.  Also,
no need to explicitly do queue servicing because queues are cleaned and
reset back to initial state at end of dev->stop.  Servicing queues also
had the side-effect of also rewakening the xmit queue, which is not what
we want.
Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com>
Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1. remove address argument since we use same address IWMC_SDIO_DATA_ADDR in
    all cases
2. add __iwmct_tx - non locking tx function for already locked contexts
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1. add TRACE level
2. use TRACE where needed to reduce the noise
3  don't INFOEX from driver
4. add DUMP level for packets dumps
5. use correct context for the log messages
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1. removed redundant NULL-pointers checks in iwmct_fw_load
as release_firmware and kfree are NULL pointer friendly
2. remove redundant memset of the parser since the structure
is fully initialized in iwmct_fw_parser_init function
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add rtnetlink init_rcvwnd to set the TCP initial receive window size
advertised by passive and active TCP connections.
The current Linux TCP implementation limits the advertised TCP initial
receive window to the one prescribed by slow start. For short lived
TCP connections used for transaction type of traffic (i.e. http
requests), bounding the advertised TCP initial receive window results
in increased latency to complete the transaction.
Support for setting initial congestion window is already supported
using rtnetlink init_cwnd, but the feature is useless without the
ability to set a larger TCP initial receive window.
The rtnetlink init_rcvwnd allows increasing the TCP initial receive
window, allowing TCP connection to advertise larger TCP receive window
than the ones bounded by slow start.
Signed-off-by: Laurent Chavey <chavey@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Non-GSO code drops dst entry for performance reasons, but
the same is missing for GSO code. Drop dst while cache-hot
for GSO case too.
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Slightly optimize tcp_sendmsg since NETIF_F_SG is used many
times iteratively in the loop. The only other modification is
to change:
			} else if (i == MAX_SKB_FRAGS ||
				   (!i &&
				   !(sk->sk_route_caps & NETIF_F_SG))) {
	to:
			} else if (i == MAX_SKB_FRAGS || !sg) {

The reason why this change is correct: this code (other than
the MAX_SKB_FRAGS case) executes only due to the else part
of: "if (skb_tailroom(skb) > 0) {" - i.e. there was no space
in the skb to put the data inline. Hence SG is false is a
sufficient condition, and there is no way a fragment can be
added to the skb.

Changelog:
	- Added the above explanation for the change
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

Remove unrequired operations in tcp_push()

Changelog:
	Removed a temporary skb variable from tcp_push()
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

tcp_push checks tcp_send_head and calls __tcp_push_pending_frames,
which again checks tcp_send_head, and this unnecessary check is
done for every other caller of __tcp_push_pending_frames.

Remove tcp_send_head check in __tcp_push_pending_frames and add
the check to tcp_push_pending_frames. Other functions call
__tcp_push_pending_frames only when tcp_send_head would evaluate
to true.
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

o Unified firmware image size can be < 1 MB
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

o Support pci error detection and recovery.
o Refactor suspend and resume code, to share with io_error_detected,
  and slot_reset callbacks
o NX_NEED_AER device state added, to synchronize with firmware
  recovery.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

o In case of tx timeout, firmare may be healthy, but some pci-func may
  see no response from it. Force firmware reset, if some pci-func
  explicitly requests so.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

o pci device should be disable at the end and it should be enable first.
o Interface should be attached(netif_device_attach()) irrespective
  of its state.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (30 commits)
  USB: Fix a bug on appledisplay.c regarding signedness
  USB: option: support hi speed for modem Haier CE100
  USB: audio gadget: free alsa devices when unloading
  USB: audio gadget: fix wTotalLength calculation
  usb: otg: isp1301_omap: fix compile error
  USB: musb: workaround Blackfin FIFO anomalies
  USB: musb: Fix array index out of bounds issue
  USB: musb: Fix null pointer dereference issue
  USB: musb: correct DMA address for tx
  USB: musb: gadget_ep0: avoid SetupEnd interrupt
  USB: musb: fix for crash in DM646x USB when (CPPI)DMA is enabled
  USB: musb: do not work if no gadget driver is loaded
  USB: musb: gadget: set otg tranceiver to idle when registering gadget
  USB: musb: Populate the VBUS GPIO with the correct GPIO number
  USB: musb: MAINTAINERS: Fix my tree's address
  USB: musb: fix compiling warning with min() macro
  USB: musb: move musb_remove to __exit
  USB: musb_gadget: fix kernel oops in txstate()
  USB: ftdi_sio: sort PID/VID entries in new ftdi_sio_ids.h header
  USB: ftdi_sio: isolate all device IDs to new ftdi_sio_ids.h header
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  devtmpfs: unlock mutex in case of string allocation error
  Driver core: export platform_device_register_data as a GPL symbol
  driver core: Prevent reference to freed memory on error path
  Driver-core: Fix bogus 0 error return in device_add()
  Driver core: driver_attribute parameters can often be const*
  Driver core: bin_attribute parameters can often be const*
  Driver core: device_attribute parameters can often be const*
  Doc/stable rules: add new cherry-pick logic
  vfs: get_sb_single() - do not pass options twice
  devtmpfs: Convert dirlock to a mutex

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
  Staging/vt66*: kconfig, depends on WLAN
  Staging: batman-adv: introduce missing kfree
  Staging: batman-adv: Add Kconfig dependancies on PROC_FS and PACKET.
  Staging: panel: Adjust range for PANEL_KEYPAD in Kconfig
  Staging: panel: Fix compilation error with custom lcd charset
  Staging: ramzswap: remove ARM specific d-cache hack
  Staging: rtl8192x: fix printk formats
  Staging: wlan-ng: fix Correct size given to memset
  staging: rtl8192su: add USB VID/PID for HWNUm-300
  staging: fix rtl8192su compilation errors with mac80211
  staging: fix rtl8192e compilation errors with mac80211
  Staging: fix rtl8187se compilation errors with mac80211
  Staging: rtl8192su: fix test for negative error in rtl8192_rx_isr()
  Staging: comedi: jr3_pci: Don't ioremap too much space. Check result.
  Staging: comedi: removed "depricated" from COMEDI_CB_BLOCK
  Staging: comedi: usbdux.c: fix locking up of the driver when the comedi ringbuffer runs empty
  Staging: dst: remove from the tree
  Staging: sm7xx: add a new framebuffer driver
  Staging: batman: fix debug Kconfig option

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  ocfs2: Set i_nlink properly during reflink.
  ocfs2: Add reflinked file's inode to inode hash eariler.
  ocfs2: refcounttree.c cleanup.
  ocfs2: Find proper end cpos for a leaf refcount block.

brightness status is reported by the Apple Cinema Displays as an
'unsigned char' (u8) value, but the code used 'char' instead.

Note that he driver was developed on the PowerPC architecture,
where the two types are synonymous, which is not always the case.

Fixed that.  Otherwise the driver will interpret brightness
levels > 127 as negative, and fail to load.
Signed-off-by: pancho horrillo <pancho@pancho.name>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

I made this patch for usbserial driver to add the support for EVDO modem
Haier CE100. The bugs report for this is here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/490068

This patch based on these post:
http://blankblondtank.wordpress.com/2009/09/04/mengoptimalkan-koneksi-modem-haier-ce-100-cdma-di-linux/
http://tantos.web.id/blogs/how-to-internet-connection-using-cdma-evdo-modem-and-karmic-koala-ubuntu-9-10

I hope this patch can help other that have the Haier C100 modem, mostly in my country, Indonesia.
Signed-off-by: Donny Kurnia <donnykurnia@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

The wTotalLength should contain the sum of the interface and unit
descriptor sizes per the Audio Device Class specification 1.0.
Reported-by: Sergey Lapin <slapin@ossfans.org>
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

commit 91c8a5a9 broke
compilation of this driver after it introduced
otg_init() as a static inline in <linux/usb/otg.h>
Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Some of these workarounds are already in place, but labeled as affecting
all BF52x parts.  Since we have official anomaly numbers now, use those
defines.  And since writing to the FIFO has a similar hang issue as reading
from the FIFO, implement the workaround there too when necessary.
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

This patch fixes the below array index out of bounds issue.

Buffer overflow, array index of 'aInfo' may be out of
bounds. Array 'aInfo' of size 78 may use index value(s) 6..84

The data stored in 'aInfo' array exceeds the array size of 78.

This patch increases the size of this array to hold the string
correctly without any memory corruption.

This issue was reported by Klockwork tool.
Signed-off-by: Maulik Mankad <x0082077@ti.com>
Cc: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

This patch fixes the following NULL pointer dereference issue.

Pointer 'request' returned from call to function 'next_request'
at line 748 may be NULL and may be dereferenced at line 792.

============
Code Snippet
============

748:  request = next_request(musb_ep);
785: if (dma && (csr & MUSB_RXCSR_DMAENAB)) {
	csr &= ~(MUSB_RXCSR_AUTOCLEAR
			| MUSB_RXCSR_DMAENAB
			| MUSB_RXCSR_DMAMODE);
	musb_writew(epio, MUSB_RXCSR,
		MUSB_RXCSR_P_WZC_BITS | csr);

792:	 request->actual += musb_ep->dma->actual_len;
Signed-off-by: Maulik Mankad <x0082077@ti.com>
Cc: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>