linux-stable.git/net/nfc/core.c, branch linux-3.3.y Linux kernel stable tree NFC: Initial LLCP support 2011-12-14T19:50:13+00:00 Samuel Ortiz sameo@linux.intel.com 2011-12-14T15:43:12+00:00 d646960f7986fefb460a2b062d5ccc8ccfeacc3a This patch is an initial implementation for the NFC Logical Link Control protocol. It's also known as NFC peer to peer mode. This is a basic implementation as it lacks SDP (services Discovery Protocol), frames aggregation support, and frame rejecion parsing. Follow up patches will implement those missing features. This code has been tested against a Nexus S phone implementing LLCP 1.0. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> 
This patch is an initial implementation for the NFC Logical Link Control
protocol. It's also known as NFC peer to peer mode.
This is a basic implementation as it lacks SDP (services Discovery
Protocol), frames aggregation support, and frame rejecion parsing.
Follow up patches will implement those missing features.
This code has been tested against a Nexus S phone implementing LLCP 1.0.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
NFC: Set and get DEP general bytes 2011-12-14T19:50:13+00:00 Samuel Ortiz sameo@linux.intel.com 2011-12-14T15:43:10+00:00 541d920b05b538ec0d9ae8ce619ee4fc6fb19e32 Without an API for setting and getting the local and remote general bytes, drivers won't be able to properly establish a DEP link. This API also allows them to propagate the remote general bytes they get from the DEP link establishment up to the LLCP layer. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> 
Without an API for setting and getting the local and remote general bytes,
drivers won't be able to properly establish a DEP link.
This API also allows them to propagate the remote general bytes they get
from the DEP link establishment up to the LLCP layer.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
NFC: Add a DEP link control netlink command 2011-12-14T19:50:12+00:00 Samuel Ortiz sameo@linux.intel.com 2011-12-14T15:43:09+00:00 1ed28f610653e9b18433c6d87e9d333b7e3e886e NFC-DEP (Data Exchange Protocol) is an NFC MAC layer. This command allows to enable and disable the DEP link on to which e.g. LLCP can run. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> 
NFC-DEP (Data Exchange Protocol) is an NFC MAC layer.
This command allows to enable and disable the DEP link on to which e.g.
LLCP can run.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
NFC: Add tx skb allocation routine 2011-12-14T19:50:12+00:00 Samuel Ortiz sameo@linux.intel.com 2011-12-14T15:43:06+00:00 7c7cd3bfec68fee33b30d177df6a6a0c4bbdc59d This is a factorization of the current rawsock tx skb allocation routine, as it will be used by the LLCP code. We also rename nfc_alloc_skb to nfc_alloc_recv_skb for consistency sake. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> 
This is a factorization of the current rawsock tx skb allocation routine,
as it will be used by the LLCP code.
We also rename nfc_alloc_skb to nfc_alloc_recv_skb for consistency sake.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
NFC: Add function name to the NFC pr_fmt() routine 2011-12-14T19:50:12+00:00 Samuel Ortiz sameo@linux.intel.com 2011-12-14T15:43:05+00:00 52858b51b2c779a8f9db32accf774b165522ad81 Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> 
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
nfc: Remove unused nfc_printk and nfc_<level> macros 2011-11-30T20:08:37+00:00 Joe Perches joe@perches.com 2011-11-29T19:37:34+00:00 538af1344ab21cd2b638e779c2e82550a886b26e All uses have been removed, so killing what's not necessary. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> 
All uses have been removed, so killing what's not necessary.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
nfc: Convert nfc_dbg to pr_debug 2011-11-30T20:08:36+00:00 Joe Perches joe@perches.com 2011-11-29T19:37:33+00:00 20c239c1390bd6f3bb389fe1a7e8307f29f52563 Using the standard debugging mechanisms is better than subsystem specific ones when the subsystem doesn't use a specific struct. Coalesce long formats. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> 
Using the standard debugging mechanisms is better than
subsystem specific ones when the subsystem doesn't use
a specific struct.

Coalesce long formats.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
nfc: Use standard logging styles 2011-11-30T20:08:36+00:00 Joe Perches joe@perches.com 2011-11-29T19:37:32+00:00 ed1e0ad8816389ceefa2d94a9a3d3520088e410f Using the normal logging styles is preferred over subsystem specific styles when the subsystem does not take a specific struct. Convert nfc_<level> specific messages to pr_<level> Add newlines to uses. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> 
Using the normal logging styles is preferred over
subsystem specific styles when the subsystem does
not take a specific struct.

Convert nfc_<level> specific messages to pr_<level>
Add newlines to uses.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
NFC: Add dev_up and dev_down control operations 2011-09-20T18:43:49+00:00 Ilan Elias ilane@ti.com 2011-09-18T08:19:33+00:00 8b3fe7b591b3c50061a8701f8eda14033420577b Add 2 new nfc control operations: dev_up to turn on the nfc device dev_down to turn off the nfc device Signed-off-by: Ilan Elias <ilane@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> 
Add 2 new nfc control operations:
dev_up to turn on the nfc device
dev_down to turn off the nfc device

Signed-off-by: Ilan Elias <ilane@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
NFC: Reserve tx head and tail room 2011-08-24T18:41:44+00:00 Samuel Ortiz sameo@linux.intel.com 2011-08-19T13:47:11+00:00 e8753043f9fbabffbf087c7f4b514c50ef89541e We can have the NFC core layer allocating the tx head and tail room for the drivers and avoid 1 or more SKBs copy on write on the Tx path. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> 
We can have the NFC core layer allocating the tx head and tail
room for the drivers and avoid 1 or more SKBs copy on write on
the Tx path.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>