NFC_CMD_LLC_GET_PARAMS: request LTO, RW, and MIUX parameters for a device

NFC_CMD_LLC_SET_PARAMS: set one or more of LTO, RW, and MIUX parameters for
a device. LTO must be set before the link is up otherwise -EINPROGRESS is
returned. RW and MIUX can be set at anytime and will be passed in subsequent
CONNECT and CC messages. If one of the passed parameters is wrong none is
set and -EINVAL is returned.
Signed-off-by: NThierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The Tx queues are no longer valid when we receive a disconnection or when
the LLCP link goes down. In the later case we also purge the entire local
Tx queue.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This config item has not carried much meaning for a while now and is
almost always enabled by default. As agreed during the Linux kernel
summit, remove it.
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This config item has not carried much meaning for a while now and is
almost always enabled by default. As agreed during the Linux kernel
summit, remove it.
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This config item has not carried much meaning for a while now and is
almost always enabled by default. As agreed during the Linux kernel
summit, remove it.
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NSzymon Janc <szymon.janc@tieto.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

As a consequence the NFC device IDs won't be increasing all the time,
as IDR provides the first available ID.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Get rid of unused arg param in pn533_init_target_complete and
in pn533_start_poll_complete.
Signed-off-by: NWaldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Max frame size should be 264 bytes as per spec and not limited to
endpoint MaxPacketSize which is 64 in my case (acr122 reader).
Signed-off-by: NWaldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The previous code was always returning the last socket from the
LLCP socket list.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

It simply involves getting the client dsap and ssap and calling the UI
frame building and sending routine.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

UI frames still need to follow the MIU rule, and they need to use the
client passed dsap as the listening socket dsap is stuck on SDP.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

With connection less PDUs we have to send the SSAP and DSAP as well.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

UI (Unnumbered Information) frames are used for sending data over
connection less links.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

When DEP goes down, bound cl sockets can be kept alive as there is no
reason to kill a connection less server socket because the LLCP link
went down.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Connection less server sockets will be in BOUND state, not LISTEN.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Replying to an SNL (Service Name Lookup) means that the other end of
the link can now rely on our answer (Which is an ssap) and thus we have
to reserve it.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NArron Wang <arron.wang@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Logical continuations should be on the previous line.
Signed-off-by: NSzymon Janc <szymon.janc@tieto.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Return code from nfc_hci_execute_cmd was not propagated to caller.
Signed-off-by: NSzymon Janc <szymon.janc@tieto.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Check for error and return if any. This makes it easier to see what is
a 'positive' function flow.
Signed-off-by: NSzymon Janc <szymon.janc@tieto.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

There is no need for return statement at the end of function returning
void.
Signed-off-by: NSzymon Janc <szymon.janc@tieto.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

No need for local rc variable as result of nci_request can be returned
directly.
Signed-off-by: NSzymon Janc <szymon.janc@tieto.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

local_gb is of size NFC_MAX_GT_LEN and len is used as index for it.
Check len against this instead of NCI_MAX_PARAM_LEN before accessing
local_gb.
Signed-off-by: NSzymon Janc <szymon.janc@tieto.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This is useful when getting devices to know if they're in target or
initiator mode.
Signed-off-by: NThierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

rf_mode is now set to NFC_RF_NONE when a device gets allocated,
when the link goes down, and when stop polling.
Signed-off-by: NThierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

SNL (Service Name Lookup) allows for LLCP peers to map service names with
SAPs. This is mandatory for connection less support as peers need to get
the right SAPs without sending the CONNECT frame.
Here we only support the Rx part of SNL. The Tx one will be implemented
when supporting connection less LLCP sockets.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

SNL (Service Name Lookup) frames are used to respond to SNL requests.
This is needed for SDP implementation.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

We no longer need to be atomic as this is only called from
llcp_sock_release().
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

In some cases (SNL, DISC, DM) we need to send an LLCP skbs without
having a sock owning it. I frames are an exception here since
they may be requeued to the llcp_sock queue.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The driver now has all HCI stuff isolated in one file, and all the
hardware link specifics in another. Writing a pn544 driver on top of
another hardware link is now just a matter of adding a new file for that
new hardware specifics.
Signed-off-by: NEric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

When the driver does not support checking the tag is still present, it
must return -EOPNOTSUPP. The NFC Core will then stop asking and not
report a tag lost event to user space.
Signed-off-by: NEric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NArron Wang <arron.wang@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

And implement the corresponding hooks for pn544.
Signed-off-by: NArron Wang <arron.wang@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

And implement the corresponding hooks for pn544.
Signed-off-by: NArron Wang <arron.wang@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

We need to send continue activation command to allow NFCIP-1
activation when a NFC target has been discovered in type A or
type F reader gate.
Signed-off-by: NArron Wang <arron.wang@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NArron Wang <arron.wang@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Set the local general bytes and default value for NFCIP1
Target/Initiator registries if the protocol is NFC-DEP
Signed-off-by: NArron Wang <arron.wang@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Conflicts:
	drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
	net/mac80211/mlme.c

It's not used or called but please make it go away before someone copies or
uses it
Signed-off-by: NAlan "minus lunch" Cox <alan@linux.intel.com>
Acked-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>