aboutsummaryrefslogtreecommitdiffstats
path: root/include/net/bluetooth/l2cap.h
Commit message (Collapse)AuthorAge
...
* Bluetooth: Move SDU related vars to struct l2cap_chanGustavo F. Padovan2011-04-07
| | | | | | As part of the moving channel stuff to l2cap_chan. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Move more ERTM stuff to struct l2cap_chanGustavo F. Padovan2011-04-07
| | | | | | As part of the moving channel stuff to l2cap_chan. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Move of ERTM *_seq vars to struct l2cap_chanGustavo F. Padovan2011-04-07
| | | | | | As part of the moving channel to stuff to struct l2cap_chan. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Move conn_state to struct l2cap_chanGustavo F. Padovan2011-04-07
| | | | | | | | This is part of "moving things to l2cap_chan". As one the first move it triggered a big number of changes in the funcions parameters, basically changing the struct sock param to struct l2cap_chan. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: clean up l2cap_sock_recvmsg()Gustavo F. Padovan2011-04-07
| | | | | | | Move some channel specific stuff to l2cap_core.c, this will make things more clear. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Move conf_{req,rsp} stuff to struct l2cap_chanGustavo F. Padovan2011-04-07
| | | | | | They are also l2cap_chan specific. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Move ident to struct l2cap_chanGustavo F. Padovan2011-04-07
| | | | | | ident is chan property, no need to reside on socket. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Remove struct del_listGustavo F. Padovan2011-04-07
| | | | | | | As we use struct list_head to keep L2CAP channels list the workaround with del_list is not needed anymore. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Use struct list_head for L2CAP channels listGustavo F. Padovan2011-04-07
| | | | | | | | Use a well known Kernel API is always a good idea than implement your own list. In the future we might use RCU on this list. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Create struct l2cap_chanGustavo F. Padovan2011-04-07
| | | | | | | | | | | | struct l2cap_chan cames to create a clear separation between what properties and data belongs to the L2CAP channel and what belongs to the socket. By now we just fold the struct sock * in struct l2cap_chan as all the channel info is struct l2cap_pinfo today. In the next commits we will see a move of channel stuff to struct l2cap_chan. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Remove unused struct l2cap_conn itemGustavo F. Padovan2011-03-31
| | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Remove unused struct itemGustavo F. Padovan2011-03-31
| | | | | | num in struct l2cap_chan_list isn't used anywhere. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Add connection parameter update responseClaudio Takahasi2011-02-16
| | | | | | | | | | | | | | | | Implements L2CAP Connection Parameter Update Response defined in the Bluetooth Core Specification, Volume 3, Part A, section 4.21. Address the LE Connection Parameter Procedure initiated by the slave. Connection Interval Minimum and Maximum have the same range: 6 to 3200. Time = N * 1.25ms. Minimum shall be less or equal to Maximum. The Slave Latency field shall have a value in the range of 0 to ((connSupervisionTimeout / connIntervalMax) - 1). Latency field shall be less than 500. connSupervisionTimeout = Timeout Multiplier * 10 ms. Multiplier field shall have a value in the range of 10 to 3200. Signed-off-by: Claudio Takahasi <claudio.takahasi@openbossa.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Add LE signaling commands handlingClaudio Takahasi2011-02-16
| | | | | | | | | | | | | This patch splits the L2CAP command handling function in order to have a clear separation between the commands related to BR/EDR and LE. Commands and responses in the LE signaling channel are not being handled yet, command reject is sent to all received requests. Bluetooth Core Specification, Volume 3, Part A, section 4 defines the signaling packets formats and allowed commands/responses over the LE signaling channel. Signed-off-by: Claudio Takahasi <claudio.takahasi@openbossa.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Add server socket support for LE connectionVille Tervo2011-02-16
| | | | | | | | Add support for LE server sockets. Signed-off-by: Ville Tervo <ville.tervo@nokia.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Add LE connection support to L2CAPVille Tervo2011-02-16
| | | | | | | | | | Add basic LE connection support to L2CAP. LE connection can be created by specifying cid in struct sockaddr_l2 Signed-off-by: Ville Tervo <ville.tervo@nokia.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: remove l2cap_load() hackGustavo F. Padovan2011-02-15
| | | | | | | l2cap_load() was added to trigger l2cap.ko module loading from the RFCOMM and BNEP modules. Now that L2CAP module is gone, we don't need it anymore. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move __l2cap_sock_close() to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move l2cap_sock_sendmsg() to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | | | Also moves some L2CAP sending functions declaration to l2cap.h Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move l2cap_sock_shutdown() to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | | | Declare __l2cap_wait_ack() and l2cap_sock_clear_timer() in l2cap.h Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move l2cap_sock_recvmsg() to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | | | | It causes the move of the declaration of 3 functions to l2cap.h: l2cap_get_ident(), l2cap_send_cmd(), l2cap_build_conf_req() Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move l2cap_sock_connect() to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move l2cap_sock_getsockopt() to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move l2cap_sock_setsockopt() to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move l2cap_sock_getname() to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move l2cap_sock_accept() to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move l2cap_sock_bind()/listen() to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move l2cap_sock_release() to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: move l2cap_sock_ops to l2cap_sock.cGustavo F. Padovan2011-02-07
| | | | | | First step to move all l2cap_sock_ops function to l2cap_sock.c Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Initial work for L2CAP split.Gustavo F. Padovan2011-02-07
| | | | | | | | | This patch tries to do the minimal to move l2cap_sock_create() and its dependencies to l2cap_sock.c. It create a API to initialize and cleanup the L2CAP sockets from l2cap_core.c through l2cap_init_sockets() and l2cap_cleanup_sockets(). Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: Use non-flushable by default L2CAP data packetsAndrei Emeltchenko2011-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modification of Nick Pelly <npelly@google.com> patch. With Bluetooth 2.1 ACL packets can be flushable or non-flushable. This commit makes ACL data packets non-flushable by default on compatible chipsets, and adds the BT_FLUSHABLE socket option to explicitly request flushable ACL data packets for a given L2CAP socket. This is useful for A2DP data which can be safely discarded if it can not be delivered within a short time (while other ACL data should not be discarded). Note that making ACL data flushable has no effect unless the automatic flush timeout for that ACL link is changed from its default of 0 (infinite). Default packet types (for compatible chipsets): Frame 34: 13 bytes on wire (104 bits), 13 bytes captured (104 bits) Bluetooth HCI H4 Bluetooth HCI ACL Packet .... 0000 0000 0010 = Connection Handle: 0x0002 ..00 .... .... .... = PB Flag: First Non-automatically Flushable Packet (0) 00.. .... .... .... = BC Flag: Point-To-Point (0) Data Total Length: 8 Bluetooth L2CAP Packet After setting BT_FLUSHABLE (sock.setsockopt(274 /*SOL_BLUETOOTH*/, 8 /* BT_FLUSHABLE */, 1 /* flush */)) Frame 34: 13 bytes on wire (104 bits), 13 bytes captured (104 bits) Bluetooth HCI H4 Bluetooth HCI ACL Packet .... 0000 0000 0010 = Connection Handle: 0x0002 ..10 .... .... .... = PB Flag: First Automatically Flushable Packet (2) 00.. .... .... .... = BC Flag: Point-To-Point (0) Data Total Length: 8 Bluetooth L2CAP Packet Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: clean up legal textAndrei Emeltchenko2010-12-01
| | | | | | | | Remove extra spaces from legal text so that legal stuff looks the same for all bluetooth code. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* Bluetooth: clean up l2cap codeAndrei Emeltchenko2010-12-01
| | | | | | | | Do not initialize static vars to zero, macros with complex values shall be enclosed with (), remove unneeded braces. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
* net: return operator cleanupEric Dumazet2010-09-23
| | | | | | | | | Change "return (EXPR);" to "return EXPR;" return is not a function, parentheses are not required. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Bluetooth: Use 3-DH5 payload size for default ERTM max PDU sizeMat Martineau2010-08-10
| | | | | | | | | | | | | | | | | | | | | | The previous value of 672 for L2CAP_DEFAULT_MAX_PDU_SIZE is based on the default L2CAP MTU. That default MTU is calculated from the size of two DH5 packets, minus ACL and L2CAP b-frame header overhead. ERTM is used with newer basebands that typically support larger 3-DH5 packets, and i-frames and s-frames have more header overhead. With clean RF conditions, basebands will typically attempt to use 1021-byte 3-DH5 packets for maximum throughput. Adjusting for 2 bytes of ACL headers plus 10 bytes of worst-case L2CAP headers yields 1009 bytes of payload. This PDU size imposes less overhead for header bytes and gives the baseband the option to choose 3-DH5 packets, but is small enough for ERTM traffic to interleave well with other L2CAP or SCO data. 672-byte payloads do not allow the most efficient over-the-air packet choice, and cannot achieve maximum throughput over BR/EDR. Signed-off-by: Mat Martineau <mathewm@codeaurora.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Change default L2CAP ERTM retransmit timeoutMat Martineau2010-08-10
| | | | | | | | The L2CAP specification requires that the ERTM retransmit timeout be at least 2 seconds for BR/EDR connections. Signed-off-by: Mat Martineau <mathewm@codeaurora.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Use __packed annotationGustavo F. Padovan2010-07-21
| | | | | | | | | To make net/ and include/net/ code consistent use __packed instead of __attribute__ ((packed)). Bluetooth subsystem was one of the last net subsys still using __attribute__ ((packed)). Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Add Google's copyright to L2CAPGustavo F. Padovan2010-07-21
| | | | | Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Add Copyright notice to L2CAPGustavo F. Padovan2010-07-21
| | | | | | | | Copyright for the time I worked on L2CAP during the Google Summer of Code program. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Remove the send_lock spinlock from ERTMGustavo F. Padovan2010-07-21
| | | | | | | | | Using a lock to deal with the ERTM race condition - interruption with new data from the hci layer - is wrong. We should use the native skb backlog queue. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Disconnect early if mode is not supportedGustavo F. Padovan2010-07-21
| | | | | | | | When mode is mandatory we shall not send connect request and report this to the userspace as well. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Fix race condition on l2cap_ertm_send()Gustavo F. Padovan2010-05-10
| | | | | | | | | | | | | | | | | | | | | | l2cap_ertm_send() can be called both from user context and bottom half context. The socket locks for that contexts are different, the user context uses a mutex(which can sleep) and the second one uses a spinlock_bh. That creates a race condition when we have interruptions on both contexts at the same time. The better way to solve this is to add a new spinlock to lock l2cap_ertm_send() and the vars it access. The other solution was to defer l2cap_ertm_send() with a workqueue, but we the sending process already has one defer on the hci layer. It's not a good idea add another one. The patch refactor the code to create l2cap_retransmit_frames(), then we encapulate the lock of l2cap_ertm_send() for some call. It also changes l2cap_retransmit_frame() to l2cap_retransmit_one_frame() to avoid confusion Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Implement Local Busy Condition handlingGustavo F. Padovan2010-05-10
| | | | | | | | | | | | | Supports Local Busy condition handling through a waitqueue that wake ups each 200ms and try to push the packets to the upper layer. If it can push all the queue then it leaves the Local Busy state. The patch modifies the behaviour of l2cap_ertm_reassembly_sdu() to support retry of the push operation. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Enable option to configure Max Transmission value via sockoptGustavo F. Padovan2010-05-10
| | | | | | | | With the sockopt extension we can set a per-channel MaxTx value. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Change acknowledgement to use the value of txWindowGustavo F. Padovan2010-05-10
| | | | | | | | | | | Now that we can set the txWindow we need to change the acknowledgement procedure to ack after each (pi->txWindow/6 + 1). The plus 1 is to avoid the zero value. It also renames pi->num_to_ack to a better name: pi->num_acked. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Add sockopt configuration for txWindow on L2CAPGustavo F. Padovan2010-05-10
| | | | | | | | Now we can set/get Transmission Window size via sockopt. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Fix configuration of the MPS valueGustavo F. Padovan2010-05-10
| | | | | | | | | We were accepting values bigger than we can accept. This was leading ERTM to drop packets because of wrong FCS checks. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Add timer to Acknowledge I-framesGustavo F. Padovan2010-05-10
| | | | | | | | | | | | We ack I-frames on each txWindow/5 I-frames received, but if the sender stop to send I-frames and it's not a txWindow multiple we can leave some frames unacked. So I added a timer to ack I-frames on this case. The timer expires in 200ms. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Implement 'Send IorRRorRNR' eventGustavo F. Padovan2010-05-10
| | | | | | | | | After receive a RR with P bit set ERTM shall use this funcion to choose what type of frame to reply with F bit = 1. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Implement RejActioned flagGustavo F. Padovan2009-12-03
| | | | | | | | | | | | | | RejActioned is used to prevent retransmission when a entity is on the WAIT_F state, i.e., waiting for a frame with F-bit set due local busy condition or a expired retransmission timer. (When these two events raise they send a frame with the Poll bit set and enters in the WAIT_F state to wait for a frame with the Final bit set.) The local entity doesn't send I-frames(the data frames) until the receipt of a frame with F-bit set. When that happens it also set RejActioned to false. RejActioned is a mandatory feature of ERTM spec. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-04 10:12:04 -0400