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2013-06-14NFC: llcp: Fix the well known services endiannessSamuel Ortiz1-2/+2
The WKS (Well Known Services) bitmask should be transmitted in big endian order. Picky implementations will refuse to establish an LLCP link when the WKS bit 0 is not set to 1. The vast majority of implementations out there are not that picky though... Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: llcp: Set the LLC Link Management well known service bitSamuel Ortiz1-0/+1
In order to advertise our LLCP support properly and to follow the LLCP specs requirements, we need to initialize the WKS (Well-Known Services) bitfield to 1 as SAP 0 is the only mandatory supported service. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: llcp: Do not send pending Tx frames when the remote is not readySamuel Ortiz1-0/+3
When we receive a RNR, the remote is busy processing the last received frame. We set a local flag for that, and we should send a SYMM when it is set instead of sending any pending frame. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: llcp: Fix non blocking sockets connectionsSamuel Ortiz2-3/+6
Without the new LLCP_CONNECTING state, non blocking sockets will be woken up with a POLLHUP right after calling connect() because their state is stuck at LLCP_CLOSED. That prevents userspace from implementing any proper non blocking socket based NFC p2p client. Cc: stable@vger.kernel.org Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Fix a potential memory leakThierry Escande1-0/+1
In nfc_llcp_tx_work() the sk_buff is not freed when the llcp_sock is null and the PDU is an I one. Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Keep socket alive until the DISC PDU is actually sentThierry Escande3-0/+15
This patch keeps the socket alive and therefore does not remove it from the sockets list in the local until the DISC PDU has been actually sent. Otherwise we would reply with DM PDUs before sending the DISC one. Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Rename nfc_llcp_disconnect() to nfc_llcp_send_disconnect()Thierry Escande3-24/+3
nfc_llcp_send_disconnect() already exists but is not used. nfc_llcp_disconnect() naming is not consistent with other PDU sending functions. This patch removes nfc_llcp_send_disconnect() and renames nfc_llcp_disconnect() Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Add secure element enablement netlink APISamuel Ortiz1-0/+56
Enabling or disabling an NFC accessible secure element through netlink requires giving both an NFC controller and a secure element indexes. Once enabled the secure element will handle card emulation once polling starts. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Add secure element enablement internal APISamuel Ortiz2-4/+109
Called via netlink, this API will enable or disable a specific secure element. When a secure element is enabled, it will handle card emulation and more generically ISO-DEP target mode, i.e. all target mode cases except for p2p target mode. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Remove and free all SEs when releasing an NFC deviceSamuel Ortiz1-0/+8
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Send netlink events for secure elements additions and removalsSamuel Ortiz3-0/+80
When an NFC driver or host controller stack discovers a secure element, it will call nfc_add_se(). In order for userspace applications to use these secure elements, a netlink event will then be sent with the SE index and its type. With that information userspace applications can decide wether or not to enable SEs, through their indexes. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Add secure elements addition and removal APISamuel Ortiz1-1/+44
This API will allow NFC drivers to add and remove the secure elements they know about or detect. Typically this should be called (asynchronously or not) from the driver or the host interface stack detect_se hook. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Extend and fix the internal secure element APISamuel Ortiz3-0/+58
Secure elements need to be discovered after enabling the NFC controller. This is typically done by the NCI core and the HCI drivers (HCI does not specify how to discover SEs, it is left to the specific drivers). Also, the SE enable/disable API explicitely takes a SE index as its argument. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Remove the static supported_se fieldSamuel Ortiz5-9/+2
Supported secure elements are typically found during a discovery process initiated when the NFC controller is up and running. For a given NFC chipset there can be many configurations (embedded SE or not, with or without a SIM card wired to the NFC controller SWP interface, etc...) and thus driver code will never know before hand which SEs are available. So we remove this field, it will be replaced by a real SE discovery mechanism. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Add NCI over SPI receiveFrederic Danis1-0/+174
Before any operation, driver interruption is de-asserted to prevent race condition between TX and RX. Transaction starts by emitting "Direct read" and acknowledged mode bytes. Then packet length is read allowing to allocate correct NCI socket buffer. After that payload is retrieved. A delay after the transaction can be added. This delay is determined by the driver during nci_spi_allocate_device() call and can be 0. If acknowledged mode is set: - CRC of header and payload is checked - if frame reception fails (CRC error): NACK is sent - if received frame has ACK or NACK flag: unblock nci_spi_send() Payload is passed to NCI module. At the end, driver interruption is re asserted. Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Add NCI over SPI sendFrederic Danis1-1/+70
Before any operation, driver interruption is de-asserted to prevent race condition between TX and RX. The NCI over SPI header is added in front of NCI packet. If acknowledged mode is set, CRC-16-CCITT is added to the packet. Then the packet is forwarded to SPI module to be sent. A delay after the transaction is added. This delay is determined by the driver during nci_spi_allocate_device() call and can be 0. After data has been sent, driver interruption is re-asserted. If acknowledged mode is set, nci_spi_send will block until acknowledgment is received. Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Add basic NCI over SPIFrederic Danis3-1/+149
The NFC Forum defines a transport interface based on Serial Peripheral Interface (SPI) for the NFC Controller Interface (NCI). This module implements the SPI transport of NCI, calling SPI module directly to read/write data to NFC controller (NFCC). NFCC driver should provide functions performing device open and close. It should also provide functions asserting/de-asserting interruption to prevent TX/RX race conditions. NFCC driver can also fix a delay between transactions if needed by the hardware. Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: HCI: Follow a positive code path in the HCI ops implementationsSamuel Ortiz1-18/+18
Exiting on the error case is more typical to the kernel coding style. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: HCI: Implement fw_upload opsEric Lapuyade1-0/+11
This is a simple forward to the HCI driver. When driver is done with the operation, it shall directly notify NFC Core by calling nfc_fw_upload_done(). Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: Add firmware upload netlink commandEric Lapuyade3-0/+114
As several NFC chipsets can have their firmwares upgraded and reflashed, this patchset adds a new netlink command to trigger that the driver loads or flashes a new firmware. This will allows userspace triggered firmware upgrade through netlink. The firmware name or hint is passed as a parameter, and the driver will eventually fetch the firmware binary through the request_firmware API. The cmd can only be executed when the nfc dev is not in use. Actual firmware loading/flashing is an asynchronous operation. Result of the operation shall send a new event up to user space through the nfc dev multicast socket. During operation, the nfc dev is not openable and thus not usable. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-14NFC: NCI: Fix skb->dev usageFrederic Danis2-13/+6
skb->dev is used for carrying a net_device pointer and not an nci_dev pointer. Remove usage of skb-dev to carry nci_dev and replace it by parameter in nci_recv_frame(), nci_send_frame() and driver send() functions. NfcWilink driver is also updated to use those functions. Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-05-21NFC: Remove commented out LLCP related Makefile linePaul Bolle1-1/+0
The Kconfig symbol NFC_LLCP was removed in commit 30cc458765 ("NFC: Move LLCP code to the NFC top level diirectory"). But the reference to its macro in this Makefile was only commented out. Remove it now. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-2/+3
Conflicts: drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c drivers/net/ethernet/emulex/benet/be.h include/net/tcp.h net/mac802154/mac802154.h Most conflicts were minor overlapping stuff. The be2net driver brought in some fixes that added __vlan_put_tag calls, which in net-next take an additional argument. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-29Merge branch 'master' of ↵John W. Linville9-79/+9
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
2013-04-27NFC: Add missing RFKILL dependency for KconfigMarcel Holtmann1-0/+1
Since the NFC subsystem gained RFKILL support, it needs to be able to build properly with whatever option for RFKILL has been selected. on i386: net/built-in.o: In function `nfc_unregister_device': (.text+0x6a36d): undefined reference to `rfkill_unregister' net/built-in.o: In function `nfc_unregister_device': (.text+0x6a378): undefined reference to `rfkill_destroy' net/built-in.o: In function `nfc_register_device': (.text+0x6a493): undefined reference to `rfkill_alloc' net/built-in.o: In function `nfc_register_device': (.text+0x6a4a4): undefined reference to `rfkill_register' net/built-in.o: In function `nfc_register_device': (.text+0x6a4b3): undefined reference to `rfkill_destroy' net/built-in.o: In function `nfc_dev_up': (.text+0x6a8e8): undefined reference to `rfkill_blocked' when CONFIG_RFKILL=m but NFC is builtin. Reported-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-26NFC: Move LLCP code to the NFC top level diirectorySamuel Ortiz9-79/+8
And stop making it optional. LLCP is a fundamental part of the NFC specifications and making it optional does not make much sense. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-25NFC: llcp: two bugs in ->getname()Dan Carpenter1-2/+3
The sockaddr_nfc_llcp struct has as hole between ->sa_family and ->dev_idx so I've added a memset() to clear it and prevent an information leak. Also the ->nfc_protocol element wasn't set so I've added that. "uaddr->sa_family" and "llcp_addr->sa_family" are the same thing but it's less confusing to use llcp_addr consistently throughout. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-24Merge branch 'master' of ↵John W. Linville5-54/+194
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
2013-04-12NFC: RFKILL supportSamuel Ortiz1-0/+38
All NFC devices will now get proper RFKILL support as long as they provide some dev_up and dev_down hooks. Rfkilling an NFC device will bring it down while it is left to userspace to bring it back up when being rfkill unblocked. This is very similar to what Bluetooth does. Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-11NFC: Prevent polling when device is downSamuel Ortiz1-0/+5
Some devices turn radio on whenever they're asked to start a poll. To prevent that from happening, we just don't call into the driver start_poll hook when the NFC device is down. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-11NFC: llcp: Terminate connection when receiving a DISC on (0,0)Samuel Ortiz1-0/+6
According to the LLCP specs, we must terminate the LLCP link when receiving a DISC with both ssap and dsap set to 0. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-11NFC: llcp: Remove local_cleanup last argumentSamuel Ortiz1-4/+4
local_cleanup is always called with device set to false as it means the local LLCP is going away. So no need to pass this switch as an argument. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-11NFC: llcp: Only keep raw sockets alive when the LLCP local leavesSamuel Ortiz1-23/+3
When the MAC goes down, connected and connection less sockets should be notified, but raw sockets should be kept alive. They will get notified only when the physical devices goes away. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-11NFC: llcp: Add support in getsockopt for RW, LTO, and MIU remote parametersThierry Escande1-1/+22
Useful for LLCP validation tests. Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-11NFC: llcp: Reset RW, LTO, and MIU remote parameters when link goes downThierry Escande3-2/+13
This resets remote parameters in both local and socket llcp structures when the link goes down. That way, nfc_llcp_getsockopt won't return values corresponding to the previous link parameters. Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-11NFC: llcp: Use localy stored remote_miu value if not set at socket levelThierry Escande3-3/+12
If remote_miu value is not set in the socket (i.e. connection-less socket) the value stored in the local is used. Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-11NFC: llcp: Aggregated frames supportThierry Escande2-12/+69
This adds support for AGF PDUs. For each PDU contained in the AGF, a new sk_buff is allocated and dispatched to its corresponding handler. Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-11NFC: llcp: Fix zero octets length SDU handlingOlivier Guiter1-8/+8
LLCP Validation test #2 (Connection-less information transfer) send a service data unit of zero octets length. This is now handled correctly. Signed-off-by: Olivier Guiter <olivier.guiter@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-11NFC: llcp: Fall back to local values when getting socket optionsSamuel Ortiz1-3/+13
If a socket option has not been set by the user, fall back to the LLCP local ones. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-11NFC: llcp: Socket miux is a big endian fieldSamuel Ortiz3-6/+9
The MIUX must be transmitted in big endian and as such we have to convert it properly. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-10Merge branch 'master' of ↵John W. Linville2-11/+3
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: drivers/net/wireless/rt2x00/rt2x00pci.c
2013-04-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2-11/+6
Conflicts: drivers/nfc/microread/mei.c net/netfilter/nfnetlink_queue_core.c Pull in 'net' to get Eric Biederman's AF_UNIX fix, upon which some cleanups are going to go on-top. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-07NFC: llcp: fix info leaks via msg_name in llcp_sock_recvmsg()Mathias Krause1-0/+3
The code in llcp_sock_recvmsg() does not initialize all the members of struct sockaddr_nfc_llcp when filling the sockaddr info. Nor does it initialize the padding bytes of the structure inserted by the compiler for alignment. Also, if the socket is in state LLCP_CLOSED or is shutting down during receive the msg_namelen member is not updated to 0 while otherwise returning with 0, i.e. "success". The msg_namelen update is also missing for stream and seqpacket sockets which don't fill the sockaddr info. Both issues lead to the fact that the code will leak uninitialized kernel stack bytes in net/socket.c. Fix the first issue by initializing the memory used for sockaddr info with memset(0). Fix the second one by setting msg_namelen to 0 early. It will be updated later if we're going to fill the msg_name member. Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org> Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-02net: fix smatch warnings inside datagram_pollJacob Keller1-1/+1
Commit 7d4c04fc170087119727119074e72445f2bb192b ("net: add option to enable error queue packets waking select") has an issue due to operator precedence causing the bit-wise OR to bind to the sock_flags call instead of the result of the terniary conditional. This fixes the *_poll functions to work properly. The old code results in "mask |= POLLPRI" instead of what was intended, which is to only include POLLPRI when the socket option is enabled. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-31net: add option to enable error queue packets waking selectKeller, Jacob E1-1/+2
Currently, when a socket receives something on the error queue it only wakes up the socket on select if it is in the "read" list, that is the socket has something to read. It is useful also to wake the socket if it is in the error list, which would enable software to wait on error queue packets without waking up for regular data on the socket. The main use case is for receiving timestamped transmit packets which return the timestamp to the socket via the error queue. This enables an application to select on the socket for the error queue only instead of for the regular traffic. -v2- * Added the SO_SELECT_ERR_QUEUE socket option to every architechture specific file * Modified every socket poll function that checks error queue Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Cc: Jeffrey Kirsher <jeffrey.t.kirsher@intel.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Matthew Vick <matthew.vick@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-26NFC: llcp: Keep the connected socket parent pointer aliveSamuel Ortiz1-1/+3
And avoid decreasing the ack log twice when dequeueing connected LLCP sockets. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-03-20NFC: llcp: Remove possible double call to kfree_skbThierry Escande1-2/+0
kfree_skb was called twice when the socket receive queue is full Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-03-20NFC: llcp: Detach socket from process context only when releasing the socketSamuel Ortiz2-8/+0
Calling sock_orphan when e.g. the NFC adapter is removed can lead to kernel crashes when e.g. a connection less client is sleeping on the Rx workqueue, waiting for data to show up. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-03-18Merge branch 'master' of ↵John W. Linville2-9/+55
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: net/nfc/llcp/llcp.c
2013-03-10NFC: llcp: Add cleanup support for unreplied SNL requestsThierry Escande3-0/+57
If the remote LLC doesn't reply in time to our SNL requests we remove them from the list of pending requests. The timeout is fixed to an arbitrary value of 3 times remote_lto. When not replied, the local LLC broadcasts NFC_EVENT_LLC_SDRES nl events for the concerned uris with sap values set to LLCP_SDP_UNBOUND (which is 65). Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

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