| Commit message (Collapse) | Author | Age | Files | Lines |
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Pull more networking updates from David Miller:
"Ok, everything from here on out will be bug fixes."
1) One final sync of wireless and bluetooth stuff from John Linville.
These changes have all been in his tree for more than a week, and
therefore have had the necessary -next exposure. John was just away
on a trip and didn't have a change to send the pull request until a
day or two ago.
2) Put back some defines in user exposed header file areas that were
removed during the tokenring purge. From Stephen Hemminger and Paul
Gortmaker.
3) A bug fix for UDP hash table allocation got lost in the pile due to
one of those "you got it.. no I've got it.." situations. :-)
From Tim Bird.
4) SKB coalescing in TCP needs to have stricter checks, otherwise we'll
try to coalesce overlapping frags and crash. Fix from Eric Dumazet.
5) RCU routing table lookups can race with free_fib_info(), causing
crashes when we deref the device pointers in the route. Fix by
releasing the net device in the RCU callback. From Yanmin Zhang.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (293 commits)
tcp: take care of overlaps in tcp_try_coalesce()
ipv4: fix the rcu race between free_fib_info and ip_route_output_slow
mm: add a low limit to alloc_large_system_hash
ipx: restore token ring define to include/linux/ipx.h
if: restore token ring ARP type to header
xen: do not disable netfront in dom0
phy/micrel: Fix ID of KSZ9021
mISDN: Add X-Tensions USB ISDN TA XC-525
gianfar:don't add FCB length to hard_header_len
Bluetooth: Report proper error number in disconnection
Bluetooth: Create flags for bt_sk()
Bluetooth: report the right security level in getsockopt
Bluetooth: Lock the L2CAP channel when sending
Bluetooth: Restore locking semantics when looking up L2CAP channels
Bluetooth: Fix a redundant and problematic incoming MTU check
Bluetooth: Add support for Foxconn/Hon Hai AR5BBU22 0489:E03C
Bluetooth: Fix EIR data generation for mgmt_device_found
Bluetooth: Fix Inquiry with RSSI event mask
Bluetooth: improve readability of l2cap_seq_list code
Bluetooth: Fix skb length calculation
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If encryption change fails we should disconnect with auth failure error
code.
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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defer_setup and suspended are now flags into bt_sk().
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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During a security level elevation we need to keep track of the current
security level of a connection until the new one is not confirmed.
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The ERTM and streaming mode transmit queue must only be accessed while
the L2CAP channel lock is held. Locking the channel before calling
l2cap_chan_send ensures that multiple threads cannot simultaneously
manipulate the queue when sending and receiving concurrently.
L2CAP channel locking had previously moved to the l2cap_chan struct
instead of the associated socket, so some of the old socket locking
can also be removed in this patch.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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As the comment for l2cap_get_chan_by_scid indicated, the function used
to return a locked socket. The lock for the socket was acquired while
the channel list was also locked.
When locking was moved over to the l2cap_chan structure, the channel
lock was no longer acquired with the channel list still locked. This
made it possible for the l2cap_chan to be deleted after
conn->chan_lock was released but before l2cap_chan_lock was called.
Making the call to l2cap_chan_lock before releasing conn->chan_lock
makes it impossible for the l2cap_chan to be deleted at the wrong
time.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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The L2CAP MTU for incoming data is verified differently depending on
the L2CAP mode, so the check is best performed in a mode-specific
context. Checking the incoming MTU before HCI fragment reassembly is
a layer violation and assumes all bytes after the standard L2CAP
header are L2CAP data.
This approach causes issues with unsegmented ERTM or streaming mode
frames, where there are additional enhanced or extended headers before
the data payload and possible FCS bytes after the data payload. A
valid frame could be as many as 10 bytes larger than the MTU.
Removing this code is the best fix, because the MTU is checked later
on for all L2CAP data frames (connectionless, basic, ERTM, and
streaming). This also gets rid of outdated locking (socket instead of
l2cap_chan) and an extra lookup of the channel ID.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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The mgmt_device_found function expects to receive only the significant
part of the EIR data so it needs to be removed before calling the
function. This patch adds a new eir_get_length() helper function to
calculate the length of the significant part.
Signed-off-by: Vishal Agarwal <vishal.agarwal@stericsson.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The right bit for "Inquiry with RSSI" is 0x02 and not 0x04 (which means
"Read Remote Extended Features Complete").
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Removes one indentation level.
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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When we add a fragment to a skb, len and data_len fields need to be
updated.
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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When building fragmented skb's skb->len keeps track of the size of head
plus all fragments combined, however when queueing the skb for sending we
need to report the head size instead of the total size, so we just set
skb->len to skb_headlen().
This bug appeared when implementing MSG_MORE support for L2CAP sockets, it
never showed up before because l2cap_skbuff_fromiovec() never accounted skb
size correctly. A following patch will fix this.
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Reviewed-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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If alloc() fails we let the frags linked list with garbage value (the
err ptr value) in its last element.
Reported-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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Commit 105bdf9ec19e729bacdb33861c74fcf3eb39eb37 introduced a
regression in L2CAP streaming mode due to rearranged initialization
code that is shared between ERTM and streaming mode. This change
makes sure the transmit queue is initialized in both modes.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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Commit 94122bbe9c8c4ad7ba9f02f9a30bfc95672c404e introduced a problem
where tx_send_head was not set to point to the first skb in the ERTM
transmit queue, which stalled data transmission. This change sets
that pointer when transmission is not already in progress.
Reported-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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Fixed some checkpatch warnings in mgmt.c.
Signed-off-by: Cristian Chilipirea <cristian.chilipirea@gmail.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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The dot1q ethertype number (0x8100) is embedded in the code, although
it is already defined in included headers.
Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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Use more common code for ERTM and streaming mode segmentation and
transmission, and begin using skb control block data for delaying
extended or enhanced header generation until just before the packet is
transmitted. This code is also better suited for resegmentation,
which is needed when L2CAP links are reconfigured after an AMP channel
move.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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Remove magic number unneeded calculation since
hlen = L2CAP_HDR_SIZE + L2CAP_PSMLEN_SIZE
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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hlen has a fixed size of L2CAP_HDR_SIZE, use this instead.
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The Bluetooth Low Energy support so far was disabled by default via
a module parameter. With this change the module parameter will be removed
and Low Energy is enabled by default.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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No one is using hci_le_ltk_neg_reply() in bluetooth subsystem.
Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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hlen - L2CAP_HDR_SIZE = 0, so we don't need to add them in the
calculation.
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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In this API, we were using sizeof operator for an array
given as function argument, which is invalid.
However this API is not used anywhere.
Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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Adding Code Aurora Forum copyright information due to significant
additions of code.
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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L2CAP sockets contain a pointer to l2cap_chan that needs to be
reference counted in order to prevent a possible dangling pointer when
the channel is freed.
There were a few other cases where an l2cap_chan pointer on the stack
was dereferenced after a call to l2cap_chan_del. Those pointers are
also now reference counted.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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l2cap_get_chan_by_ident was not used, but didn't generate a compiler
warning because it was an inline function.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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Structure members used by ERTM or streaming mode need to be
initialized when an ERTM or streaming mode link is configured. Some
duplicate code is also eliminated by moving in to the ERTM init
function.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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Moving these functions simplifies future patches by eliminating
forward declarations, makes future patches easier to review, and
better preserves 'git blame' information.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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These values are now in the nested l2cap_ctrl struct.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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User-space pass the remote device address type to kernel through
struct sockaddr_l2 what makes the advertising useless. This patch
removes all advertising cache code.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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In order to establish a LE connection we need the address type
information. User-space already pass this information to kernel
through struct sockaddr_l2.
This patch adds the dst_type parameter to l2cap_chan_connect so we
are able to pass the address type info from user-space down to
hci_conn layer.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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This patch adds the dst_type parameter to hci_connect function.
Instead of searching the address type in advertising cache, we
use the dst_type parameter to establish LE connections.
The dst_type is ignored for BR/EDR connection establishment.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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This patch moves the helper function bdaddr_to_le to hci_core, so it
can be used in mgmt.c and hci_conn.c.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Since address type macros are not only related to Management
Interface anymore, it makes sense to rename the helper function
mgmt_to_le to bdaddr_to_le.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Since address type macros are not only related to Management
Interface anymore, it makes sense to rename the helper function
link_to_mgmt to link_to_bdaddr.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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This patch moves address type macros to bluetooth.h since they will be
used by management interface and Bluetooth socket interface. It also
replaces the macro prefix MGMT_ADDR_ by BDADDR_.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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This patch removes unneeded variable assignments in hci_connect.
'sec_level' is already assigned to BT_SECURITY_LOW in hci_le_connect
and 'pending_sec_level' and 'auth_type' are assigned right after
if statement.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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As most LE devices leave advertising mode when they enter the connected
state, we may want to "pass" that connection to other users.
The first user will be the pairing procedure, the connection is
established without an associated socket, after the pairing is
complete, userspace may want to discover via GATT what services the
newly bonded device has.
If userspace establishes the connection while the timeout still
hasn't expired, the connection will be re-used.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Tested-by: João Paulo Rechi Vita <jprvita@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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The cid or psm and the source address might not be enough to uniquely
identify a global channel, especially when the source address is our
own.
For instance, when trying to communicate with two LE devices in master
mode, data received from the both devices is sent to the same socket.
Fix this by taking the destination address into account when choosing
the socket.
Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Tested-by: João Paulo Rechi Vita <jprvita@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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We allocate memory with kzalloc() so there is no need to call
memset(..., 0, ...) or similar.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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We currently initialize locks, lists, works, etc. in hci_register_dev()
(hci_alloc_dev() was added later) which is bogus because an hdev is in an
invalid state if it is not registered.
This patch moves all memory initialization to hci_alloc_dev(). Device
registering and registration of sub-modules is still left in
hci_register_dev() as it belongs there.
The benefit is (despite cleaning up the code-base) we can now always be
sure that an hdev is a valid object and can be locked and worked on even
though it may not be registered.
This patch also reorders the initialization to be easier to understand.
First the memory is initialized, then all generic structures and as last
step the sub-init functions are called. This guarantees that all
dependencies are initialized in the right order and makes it also easier
to find a specific line. We previously initialized it in the same order as
the "struct hci_dev" is declared which seems pretty random.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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alloc() and register() (and free() and unregister()) are closely related
so move them more closely together. This will also allow to move
functionality from register() to alloc() without needing
forward-declarations.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The SCO sockets are only identified by its address. So only allow one
SCO socket in listening state per address or BDADDR_ANY.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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Checking the source address in SCO bind function will prevent from
having an incoming and outgoing SCO socket. However that might be
needed in case of multiple SCO connections on a single device.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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When adding HCI devices hci_register_dev assigns the same name
hci1 for subsequently added AMP devices.
...
[ 6958.381886] sysfs: cannot create duplicate filename
'/devices/virtual/bluetooth/hci1
...
We assume id starts with the number we'll try to add the new device
and keep iterating until we find the proper place. The only difference
is we start with 0 for BR/EDR device and 1 for AMP devices (thus AMP
devices will never receive register as index 0). Then every hdev->id in
the _ordered_ list <= to the id we want we increment id and move the
variable head. In the end we'll have id as the first available one and
head is where you need to add hdev after to keep the list ordered.
Reported-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Sco_conn_add is called from two places and always with status = 0.
Signed-off-by: Lukasz Rymanowski <lukasz.rymanowski@tieto.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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Split the checks for sk->sk_state and sk->sk_type for SCO listen
sockets. This makes the code more readable.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
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