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If l2cap_chan_create() fails then it will return from l2cap_sock_kill
since zapped flag of sk is reset.
Signed-off-by: Jaganath Kanakkassery <jaganath.k@samsung.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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smp_chan_create might return NULL so we need to check before
dereferencing smp.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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When the name of the given entry is empty , the state needs to be
updated accordingly.
Cc: stable@vger.kernel.org
Signed-off-by: Ram Malovany <ramm@ti.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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If the device was not found in a list of found devices names of which
are pending.This may happen in a case when HCI Remote Name Request
was sent as a part of incoming connection establishment procedure.
Hence there is no need to continue resolving a next name as it will
be done upon receiving another Remote Name Request Complete Event.
This will fix a kernel crash when trying to use this entry to resolve
the next name.
Cc: stable@vger.kernel.org
Signed-off-by: Ram Malovany <ramm@ti.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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If entry wasn't found in the hci_inquiry_cache_lookup_resolve do not
resolve the name.This will fix a kernel crash when trying to use NULL
pointer.
Cc: stable@vger.kernel.org
Signed-off-by: Ram Malovany <ramm@ti.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Some devices e.g. some Android based phones don't do SDP search before
pairing and cancel legacy pairing when ACL is disconnected.
PIN Code Request event which changes ACL timeout to HCI_PAIRING_TIMEOUT
is only received after remote user entered PIN.
In that case no L2CAP is connected so default HCI_DISCONN_TIMEOUT
(2 seconds) is being used to timeout ACL connection. This results in
problems with legacy pairing as remote user has only few seconds to
enter PIN before ACL is disconnected.
Increase disconnect timeout for incomming connection to
HCI_PAIRING_TIMEOUT if SSP is disabled and no linkey exists.
To avoid keeping ACL alive for too long after SDP search set ACL
timeout back to HCI_DISCONN_TIMEOUT when L2CAP is connected.
2012-07-19 13:24:43.413521 < HCI Command: Create Connection (0x01|0x0005) plen 13
bdaddr 00:02:72:D6:6A:3F ptype 0xcc18 rswitch 0x01 clkoffset 0x0000
Packet type: DM1 DM3 DM5 DH1 DH3 DH5
2012-07-19 13:24:43.425224 > HCI Event: Command Status (0x0f) plen 4
Create Connection (0x01|0x0005) status 0x00 ncmd 1
2012-07-19 13:24:43.885222 > HCI Event: Role Change (0x12) plen 8
status 0x00 bdaddr 00:02:72:D6:6A:3F role 0x01
Role: Slave
2012-07-19 13:24:44.054221 > HCI Event: Connect Complete (0x03) plen 11
status 0x00 handle 42 bdaddr 00:02:72:D6:6A:3F type ACL encrypt 0x00
2012-07-19 13:24:44.054313 < HCI Command: Read Remote Supported Features (0x01|0x001b) plen 2
handle 42
2012-07-19 13:24:44.055176 > HCI Event: Page Scan Repetition Mode Change (0x20) plen 7
bdaddr 00:02:72:D6:6A:3F mode 0
2012-07-19 13:24:44.056217 > HCI Event: Max Slots Change (0x1b) plen 3
handle 42 slots 5
2012-07-19 13:24:44.059218 > HCI Event: Command Status (0x0f) plen 4
Read Remote Supported Features (0x01|0x001b) status 0x00 ncmd 0
2012-07-19 13:24:44.062192 > HCI Event: Command Status (0x0f) plen 4
Unknown (0x00|0x0000) status 0x00 ncmd 1
2012-07-19 13:24:44.067219 > HCI Event: Read Remote Supported Features (0x0b) plen 11
status 0x00 handle 42
Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
2012-07-19 13:24:44.067248 < HCI Command: Read Remote Extended Features (0x01|0x001c) plen 3
handle 42 page 1
2012-07-19 13:24:44.071217 > HCI Event: Command Status (0x0f) plen 4
Read Remote Extended Features (0x01|0x001c) status 0x00 ncmd 1
2012-07-19 13:24:44.076218 > HCI Event: Read Remote Extended Features (0x23) plen 13
status 0x00 handle 42 page 1 max 1
Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
2012-07-19 13:24:44.076249 < HCI Command: Remote Name Request (0x01|0x0019) plen 10
bdaddr 00:02:72:D6:6A:3F mode 2 clkoffset 0x0000
2012-07-19 13:24:44.081218 > HCI Event: Command Status (0x0f) plen 4
Remote Name Request (0x01|0x0019) status 0x00 ncmd 1
2012-07-19 13:24:44.105214 > HCI Event: Remote Name Req Complete (0x07) plen 255
status 0x00 bdaddr 00:02:72:D6:6A:3F name 'uw000951-0'
2012-07-19 13:24:44.105284 < HCI Command: Authentication Requested (0x01|0x0011) plen 2
handle 42
2012-07-19 13:24:44.111207 > HCI Event: Command Status (0x0f) plen 4
Authentication Requested (0x01|0x0011) status 0x00 ncmd 1
2012-07-19 13:24:44.112220 > HCI Event: Link Key Request (0x17) plen 6
bdaddr 00:02:72:D6:6A:3F
2012-07-19 13:24:44.112249 < HCI Command: Link Key Request Negative Reply (0x01|0x000c) plen 6
bdaddr 00:02:72:D6:6A:3F
2012-07-19 13:24:44.115215 > HCI Event: Command Complete (0x0e) plen 10
Link Key Request Negative Reply (0x01|0x000c) ncmd 1
status 0x00 bdaddr 00:02:72:D6:6A:3F
2012-07-19 13:24:44.116215 > HCI Event: PIN Code Request (0x16) plen 6
bdaddr 00:02:72:D6:6A:3F
2012-07-19 13:24:48.099184 > HCI Event: Auth Complete (0x06) plen 3
status 0x13 handle 42
Error: Remote User Terminated Connection
2012-07-19 13:24:48.179182 > HCI Event: Disconn Complete (0x05) plen 4
status 0x00 handle 42 reason 0x13
Reason: Remote User Terminated Connection
Cc: stable@vger.kernel.org
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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sco_chan_del() only has conn != NULL when called from sco_conn_del() so
just move the code from it that deal with conn to sco_conn_del().
[ 120.765529]
[ 120.765529] ======================================================
[ 120.766529] [ INFO: possible circular locking dependency detected ]
[ 120.766529] 3.5.0-rc1-10292-g3701f94-dirty #70 Tainted: G W
[ 120.766529] -------------------------------------------------------
[ 120.766529] kworker/u:3/1497 is trying to acquire lock:
[ 120.766529] (&(&conn->lock)->rlock#2){+.+...}, at:
[<ffffffffa00b7ecc>] sco_chan_del+0x4c/0x170 [bluetooth]
[ 120.766529]
[ 120.766529] but task is already holding lock:
[ 120.766529] (slock-AF_BLUETOOTH-BTPROTO_SCO){+.+...}, at:
[<ffffffffa00b8401>] sco_conn_del+0x61/0xe0 [bluetooth]
[ 120.766529]
[ 120.766529] which lock already depends on the new lock.
[ 120.766529]
[ 120.766529]
[ 120.766529] the existing dependency chain (in reverse order) is:
[ 120.766529]
[ 120.766529] -> #1 (slock-AF_BLUETOOTH-BTPROTO_SCO){+.+...}:
[ 120.766529] [<ffffffff8107980e>] lock_acquire+0x8e/0xb0
[ 120.766529] [<ffffffff813c19e0>] _raw_spin_lock+0x40/0x80
[ 120.766529] [<ffffffffa00b85e9>] sco_connect_cfm+0x79/0x300
[bluetooth]
[ 120.766529] [<ffffffffa0094b13>]
hci_sync_conn_complete_evt.isra.90+0x343/0x400 [bluetooth]
[ 120.766529] [<ffffffffa009d447>] hci_event_packet+0x317/0xfb0
[bluetooth]
[ 120.766529] [<ffffffffa008aa68>] hci_rx_work+0x2c8/0x890
[bluetooth]
[ 120.766529] [<ffffffff81047db7>] process_one_work+0x197/0x460
[ 120.766529] [<ffffffff810489d6>] worker_thread+0x126/0x2d0
[ 120.766529] [<ffffffff8104ee4d>] kthread+0x9d/0xb0
[ 120.766529] [<ffffffff813c4294>] kernel_thread_helper+0x4/0x10
[ 120.766529]
[ 120.766529] -> #0 (&(&conn->lock)->rlock#2){+.+...}:
[ 120.766529] [<ffffffff81078a8a>] __lock_acquire+0x154a/0x1d30
[ 120.766529] [<ffffffff8107980e>] lock_acquire+0x8e/0xb0
[ 120.766529] [<ffffffff813c19e0>] _raw_spin_lock+0x40/0x80
[ 120.766529] [<ffffffffa00b7ecc>] sco_chan_del+0x4c/0x170
[bluetooth]
[ 120.766529] [<ffffffffa00b8414>] sco_conn_del+0x74/0xe0
[bluetooth]
[ 120.766529] [<ffffffffa00b88a2>] sco_disconn_cfm+0x32/0x60
[bluetooth]
[ 120.766529] [<ffffffffa0093a82>]
hci_disconn_complete_evt.isra.53+0x242/0x390 [bluetooth]
[ 120.766529] [<ffffffffa009d747>] hci_event_packet+0x617/0xfb0
[bluetooth]
[ 120.766529] [<ffffffffa008aa68>] hci_rx_work+0x2c8/0x890
[bluetooth]
[ 120.766529] [<ffffffff81047db7>] process_one_work+0x197/0x460
[ 120.766529] [<ffffffff810489d6>] worker_thread+0x126/0x2d0
[ 120.766529] [<ffffffff8104ee4d>] kthread+0x9d/0xb0
[ 120.766529] [<ffffffff813c4294>] kernel_thread_helper+0x4/0x10
[ 120.766529]
[ 120.766529] other info that might help us debug this:
[ 120.766529]
[ 120.766529] Possible unsafe locking scenario:
[ 120.766529]
[ 120.766529] CPU0 CPU1
[ 120.766529] ---- ----
[ 120.766529] lock(slock-AF_BLUETOOTH-BTPROTO_SCO);
[ 120.766529]
lock(&(&conn->lock)->rlock#2);
[ 120.766529]
lock(slock-AF_BLUETOOTH-BTPROTO_SCO);
[ 120.766529] lock(&(&conn->lock)->rlock#2);
[ 120.766529]
[ 120.766529] *** DEADLOCK ***
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch moves the hci_conn check to begining of hci_le_conn_
complete_evt in order to improve code's readability and better
error handling.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch does a trivial code refactoring in hci_conn lookup in
hci_le_conn_complete_evt. It performs the hci_conn lookup at the
begining of the function since it is used by both flows (error
and success).
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch changes hci_cs_le_create_conn to perform hci_conn lookup
by state instead of bdaddr.
Since we can have only one LE connection in BT_CONNECT state, we can
perform LE hci_conn lookup by state. This way, we don't rely on
hci_sent_cmd_data helper to find the hci_conn object.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch does some code refactoring in hci_cs_le_create_conn
function. The hci_conn object is only needed in case of failure,
therefore hdev locking and hci_conn lookup were moved to
if-statement scope.
Also, the conn->state check was removed since we should always
close the connection if it fails.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch removes some unneeded code from hci_cs_le_create_conn.
If the hci_conn is not found, it means this LE connection attempt
was triggered by a thrid-party tool (e.g. hcitool). We should not
create this new hci_conn in LE Create Connection command status
event since it is already properly handled in LE Connection
Complete event.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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We need to check the 'Role' parameter from the LE Connection
Complete Event in order to properly set 'out' and 'link_mode'
fields from hci_conn structure.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch replaces the unlock-and-return statements by the goto
statement.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Added /proc/net/sco via bt_procfs_init().
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Added /proc/net/rfcomm via bt_procfs_init().
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Added /proc/net/l2cap via bt_procfs_init().
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Added /proc/net/hidp via bt_procfs_init().
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Added /proc/net/hci via bt_procfs_init().
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Added /proc/net/cmtp via bt_procfs_init().
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Added /proc/net/bnep via bt_procfs_init().
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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lsof command can tell the type of socket processes are using.
Internal lsof uses inode numbers on socket fs to resolve the type of
sockets. Files under /proc/net/, such as tcp, udp, unix, etc provides
such inode information.
Unfortunately bluetooth related protocols don't provide such inode
information. This patch series introduces /proc/net files for the protocols.
This patch against af_bluetooth.c provides facility to the implementation
of protocols. This patch extends bt_sock_list and introduces two exported
function bt_procfs_init, bt_procfs_cleanup.
The type bt_sock_list is already used in some of implementation of
protocols. bt_procfs_init prepare seq_operations which converts
protocol own bt_sock_list data to protocol own proc entry when the
entry is accessed.
What I, lsof user, need is just inode number of bluetooth
socket. However, people may want more information. The bt_procfs_init
takes a function pointer for customizing the show handler of
seq_operations.
In v4 patch, __acquires and __releases attributes are added to suppress
sparse warning. Suggested by Andrei Emeltchenko.
In v5 patch, linux/proc_fs.h is included to use PDE. Build error is
reported by Fengguang Wu.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Move the l2cap channel list chan->global_l under the refcnt
protection and free it based on the refcnt.
Signed-off-by: Jaganath Kanakkassery <jaganath.k@samsung.com>
Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Reviewed-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Refactor the code in order to use the l2cap_chan_destroy()
from l2cap_chan_put() under the refcnt protection.
Signed-off-by: Jaganath Kanakkassery <jaganath.k@samsung.com>
Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Reviewed-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch removes hdev locking in hci_user_passkey_request_evt
since it is not needed. mgmt_user_passkey_request simply calls
mgmt_event which does not require hdev locking at all.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Return values are never used because callers hci_proto_connect_cfm
and hci_proto_disconn_cfm return void.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch replaces all LMP_NO_FLUSH bit checking by the helper
macro lmp_no_flush_capable.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch replaces all LMP_SNIFF_SUBR bit checking by the helper
macro lmp_sniffsubr_capable.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch replaces all LMP_SNIFF bit checking by the helper macro
lmp_sniff_capable.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch replaces all LMP_RSWITCH bit checking by the helper macro
lmp_rswitch_capable.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch replaces all LMP_ESCO bit checking by the helper macro
lmp_esco_capable.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch replaces all LMP_SIMPLE_PAIR bit checking by the helper
macro lmp_ssp_capable.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch replaces all LMP_LE bit checking by the helper macro
lmp_le_capable.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This patch replaces all LMP_NO_BREDR bit checking by the helper
macro lmp_bredr_capable.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Do not process A2MP channel in l2cap_security_cfm
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Fix compile warnings below:
...
net/bluetooth/a2mp.c:505:33: warning: symbol 'hdr' shadows an earlier one
net/bluetooth/a2mp.c:498:25: originally declared here
...
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Print A2MP code format according to Bluetooth style.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Add check that HCI controller is BR/EDR. AMP controller shall not be
managed by mgmt interface and consequently user space.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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This handles the merge issue in:
arch/um/drivers/line.c
arch/um/drivers/line.h
And resolves the duplicate patches that were in both trees do to the
tty-next branch not getting merged into 3.6-rc1.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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performance profiles show a high cost in the IN_DEV_ROUTE_LOCALNET()
call done in ip_route_input_slow(), because of multiple dereferences,
even if cache lines are clean and available in cpu caches.
Since we already have the 'net' pointer, introduce
IN_DEV_NET_ROUTE_LOCALNET() macro avoiding two dereferences
(dev_net(in_dev->dev))
Also change the tests to use IN_DEV_NET_ROUTE_LOCALNET() only if saddr
or/and daddr are loopback addresse.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use net_hash_mix(net) instead of hash_ptr(net, 8), and use
hash_32() instead of using a serie of XOR
Define IN4_ADDR_HSIZE_SHIFT for clarity
__ip_dev_find() can perform the net_eq() call only if ifa_local
matches the key, to avoid unneeded dereferences.
remove inline attributes
# size net/ipv4/devinet.o.before net/ipv4/devinet.o
text data bss dec hex filename
17471 2545 2048 22064 5630 net/ipv4/devinet.o.before
17335 2545 2048 21928 55a8 net/ipv4/devinet.o
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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gact_rand array is accessed by gact->tcfg_ptype whose value
is assumed to less than MAX_RAND, but any range checks are
not performed.
So add a check in tcf_gact_init(). And in tcf_gact(), we can
reduce a branch.
Signed-off-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Although adding an IE is almost guaranteed to succeed since we already
accounted for its length while allocating the skb, we should still free
the skb in case of failure.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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It doesn't make a lot of sense to wait for an ack in response to a
peering close frame since either peer in this exchange could be going
down.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This function was only used by mesh, and not really needed since any
interface-specific cleanup already happens in the netdev handlers.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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It is not necessary to stop the mesh beacon in the mac80211 ndo_stop
handler, since cfg80211 has already left the mesh on NETDEV_GOING_DOWN
notification.
Also some improvements to ieee80211_stop_mesh():
- flush mpath entries.
- flush sta entries per-sdata so we don't remove entries belonging to
other vifs on the same hw.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
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Avoid crashing if the crypto key payload was NULL, as when it was not correctly
allocated and initialized. Also, avoid leaking it.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
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Restore the default state to the "beacon_found" flag when
the channel flags are restored. Otherwise, we can end up
with a channel that we can no longer transmit on even when
we can see beacons on that channel.
Signed-off-by: Paul Stewart <pstew@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Currently the only way for wireless drivers to tell whether or not OFDM
is allowed on the current channel is to check the regulatory
information. However, this requires hodling cfg80211_mutex, which is not
visible to the drivers.
Other regulatory restrictions are provided as flags in the channel
definition, so let's do similarly with OFDM. This patch adds a new flag,
IEEE80211_CHAN_NO_OFDM, to tell drivers that OFDM on a channel is not
allowed. This flag is set on any channels for which regulatory indicates
that OFDM is prohibited.
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Tested-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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