| /* | |
| BlueZ - Bluetooth protocol stack for Linux | |
| Copyright (C) 2000-2001 Qualcomm Incorporated | |
| Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org> | |
| Copyright (C) 2010 Google Inc. | |
| Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
| This program is free software; you can redistribute it and/or modify | |
| it under the terms of the GNU General Public License version 2 as | |
| published by the Free Software Foundation; | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
| OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
| IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
| CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES | |
| WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, | |
| COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
| SOFTWARE IS DISCLAIMED. | |
| */ | |
| #ifndef __L2CAP_H | |
| #define __L2CAP_H | |
| #include <asm/unaligned.h> | |
| /* L2CAP defaults */ | |
| #define L2CAP_DEFAULT_MTU 672 | |
| #define L2CAP_DEFAULT_MIN_MTU 48 | |
| #define L2CAP_DEFAULT_FLUSH_TO 0xffff | |
| #define L2CAP_DEFAULT_TX_WINDOW 63 | |
| #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF | |
| #define L2CAP_DEFAULT_MAX_TX 3 | |
| #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */ | |
| #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ | |
| #define L2CAP_DEFAULT_MAX_PDU_SIZE 1009 /* Sized for 3-DH5 packet */ | |
| #define L2CAP_DEFAULT_ACK_TO 200 | |
| #define L2CAP_LE_DEFAULT_MTU 23 | |
| #define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF | |
| #define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF | |
| #define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF | |
| #define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100) | |
| #define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000) | |
| #define L2CAP_ENC_TIMEOUT msecs_to_jiffies(5000) | |
| #define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000) | |
| #define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000) | |
| /* L2CAP socket address */ | |
| struct sockaddr_l2 { | |
| sa_family_t l2_family; | |
| __le16 l2_psm; | |
| bdaddr_t l2_bdaddr; | |
| __le16 l2_cid; | |
| }; | |
| /* L2CAP socket options */ | |
| #define L2CAP_OPTIONS 0x01 | |
| struct l2cap_options { | |
| __u16 omtu; | |
| __u16 imtu; | |
| __u16 flush_to; | |
| __u8 mode; | |
| __u8 fcs; | |
| __u8 max_tx; | |
| __u16 txwin_size; | |
| }; | |
| #define L2CAP_CONNINFO 0x02 | |
| struct l2cap_conninfo { | |
| __u16 hci_handle; | |
| __u8 dev_class[3]; | |
| }; | |
| #define L2CAP_LM 0x03 | |
| #define L2CAP_LM_MASTER 0x0001 | |
| #define L2CAP_LM_AUTH 0x0002 | |
| #define L2CAP_LM_ENCRYPT 0x0004 | |
| #define L2CAP_LM_TRUSTED 0x0008 | |
| #define L2CAP_LM_RELIABLE 0x0010 | |
| #define L2CAP_LM_SECURE 0x0020 | |
| /* L2CAP command codes */ | |
| #define L2CAP_COMMAND_REJ 0x01 | |
| #define L2CAP_CONN_REQ 0x02 | |
| #define L2CAP_CONN_RSP 0x03 | |
| #define L2CAP_CONF_REQ 0x04 | |
| #define L2CAP_CONF_RSP 0x05 | |
| #define L2CAP_DISCONN_REQ 0x06 | |
| #define L2CAP_DISCONN_RSP 0x07 | |
| #define L2CAP_ECHO_REQ 0x08 | |
| #define L2CAP_ECHO_RSP 0x09 | |
| #define L2CAP_INFO_REQ 0x0a | |
| #define L2CAP_INFO_RSP 0x0b | |
| #define L2CAP_CREATE_CHAN_REQ 0x0c | |
| #define L2CAP_CREATE_CHAN_RSP 0x0d | |
| #define L2CAP_MOVE_CHAN_REQ 0x0e | |
| #define L2CAP_MOVE_CHAN_RSP 0x0f | |
| #define L2CAP_MOVE_CHAN_CFM 0x10 | |
| #define L2CAP_MOVE_CHAN_CFM_RSP 0x11 | |
| #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 | |
| #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 | |
| /* L2CAP extended feature mask */ | |
| #define L2CAP_FEAT_FLOWCTL 0x00000001 | |
| #define L2CAP_FEAT_RETRANS 0x00000002 | |
| #define L2CAP_FEAT_BIDIR_QOS 0x00000004 | |
| #define L2CAP_FEAT_ERTM 0x00000008 | |
| #define L2CAP_FEAT_STREAMING 0x00000010 | |
| #define L2CAP_FEAT_FCS 0x00000020 | |
| #define L2CAP_FEAT_EXT_FLOW 0x00000040 | |
| #define L2CAP_FEAT_FIXED_CHAN 0x00000080 | |
| #define L2CAP_FEAT_EXT_WINDOW 0x00000100 | |
| #define L2CAP_FEAT_UCD 0x00000200 | |
| /* L2CAP checksum option */ | |
| #define L2CAP_FCS_NONE 0x00 | |
| #define L2CAP_FCS_CRC16 0x01 | |
| /* L2CAP fixed channels */ | |
| #define L2CAP_FC_L2CAP 0x02 | |
| #define L2CAP_FC_A2MP 0x08 | |
| /* L2CAP Control Field bit masks */ | |
| #define L2CAP_CTRL_SAR 0xC000 | |
| #define L2CAP_CTRL_REQSEQ 0x3F00 | |
| #define L2CAP_CTRL_TXSEQ 0x007E | |
| #define L2CAP_CTRL_SUPERVISE 0x000C | |
| #define L2CAP_CTRL_RETRANS 0x0080 | |
| #define L2CAP_CTRL_FINAL 0x0080 | |
| #define L2CAP_CTRL_POLL 0x0010 | |
| #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ | |
| #define L2CAP_CTRL_TXSEQ_SHIFT 1 | |
| #define L2CAP_CTRL_SUPER_SHIFT 2 | |
| #define L2CAP_CTRL_REQSEQ_SHIFT 8 | |
| #define L2CAP_CTRL_SAR_SHIFT 14 | |
| /* L2CAP Extended Control Field bit mask */ | |
| #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000 | |
| #define L2CAP_EXT_CTRL_SAR 0x00030000 | |
| #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000 | |
| #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC | |
| #define L2CAP_EXT_CTRL_POLL 0x00040000 | |
| #define L2CAP_EXT_CTRL_FINAL 0x00000002 | |
| #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */ | |
| #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2 | |
| #define L2CAP_EXT_CTRL_SAR_SHIFT 16 | |
| #define L2CAP_EXT_CTRL_SUPER_SHIFT 16 | |
| #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18 | |
| /* L2CAP Supervisory Function */ | |
| #define L2CAP_SUPER_RR 0x00 | |
| #define L2CAP_SUPER_REJ 0x01 | |
| #define L2CAP_SUPER_RNR 0x02 | |
| #define L2CAP_SUPER_SREJ 0x03 | |
| /* L2CAP Segmentation and Reassembly */ | |
| #define L2CAP_SAR_UNSEGMENTED 0x00 | |
| #define L2CAP_SAR_START 0x01 | |
| #define L2CAP_SAR_END 0x02 | |
| #define L2CAP_SAR_CONTINUE 0x03 | |
| /* L2CAP Command rej. reasons */ | |
| #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 | |
| #define L2CAP_REJ_MTU_EXCEEDED 0x0001 | |
| #define L2CAP_REJ_INVALID_CID 0x0002 | |
| /* L2CAP structures */ | |
| struct l2cap_hdr { | |
| __le16 len; | |
| __le16 cid; | |
| } __packed; | |
| #define L2CAP_HDR_SIZE 4 | |
| #define L2CAP_ENH_HDR_SIZE 6 | |
| #define L2CAP_EXT_HDR_SIZE 8 | |
| #define L2CAP_FCS_SIZE 2 | |
| #define L2CAP_SDULEN_SIZE 2 | |
| #define L2CAP_PSMLEN_SIZE 2 | |
| struct l2cap_cmd_hdr { | |
| __u8 code; | |
| __u8 ident; | |
| __le16 len; | |
| } __packed; | |
| #define L2CAP_CMD_HDR_SIZE 4 | |
| struct l2cap_cmd_rej_unk { | |
| __le16 reason; | |
| } __packed; | |
| struct l2cap_cmd_rej_mtu { | |
| __le16 reason; | |
| __le16 max_mtu; | |
| } __packed; | |
| struct l2cap_cmd_rej_cid { | |
| __le16 reason; | |
| __le16 scid; | |
| __le16 dcid; | |
| } __packed; | |
| struct l2cap_conn_req { | |
| __le16 psm; | |
| __le16 scid; | |
| } __packed; | |
| struct l2cap_conn_rsp { | |
| __le16 dcid; | |
| __le16 scid; | |
| __le16 result; | |
| __le16 status; | |
| } __packed; | |
| /* channel indentifier */ | |
| #define L2CAP_CID_SIGNALING 0x0001 | |
| #define L2CAP_CID_CONN_LESS 0x0002 | |
| #define L2CAP_CID_LE_DATA 0x0004 | |
| #define L2CAP_CID_LE_SIGNALING 0x0005 | |
| #define L2CAP_CID_SMP 0x0006 | |
| #define L2CAP_CID_DYN_START 0x0040 | |
| #define L2CAP_CID_DYN_END 0xffff | |
| /* connect/create channel results */ | |
| #define L2CAP_CR_SUCCESS 0x0000 | |
| #define L2CAP_CR_PEND 0x0001 | |
| #define L2CAP_CR_BAD_PSM 0x0002 | |
| #define L2CAP_CR_SEC_BLOCK 0x0003 | |
| #define L2CAP_CR_NO_MEM 0x0004 | |
| #define L2CAP_CR_BAD_AMP 0x0005 | |
| /* connect/create channel status */ | |
| #define L2CAP_CS_NO_INFO 0x0000 | |
| #define L2CAP_CS_AUTHEN_PEND 0x0001 | |
| #define L2CAP_CS_AUTHOR_PEND 0x0002 | |
| struct l2cap_conf_req { | |
| __le16 dcid; | |
| __le16 flags; | |
| __u8 data[0]; | |
| } __packed; | |
| struct l2cap_conf_rsp { | |
| __le16 scid; | |
| __le16 flags; | |
| __le16 result; | |
| __u8 data[0]; | |
| } __packed; | |
| #define L2CAP_CONF_SUCCESS 0x0000 | |
| #define L2CAP_CONF_UNACCEPT 0x0001 | |
| #define L2CAP_CONF_REJECT 0x0002 | |
| #define L2CAP_CONF_UNKNOWN 0x0003 | |
| #define L2CAP_CONF_PENDING 0x0004 | |
| #define L2CAP_CONF_EFS_REJECT 0x0005 | |
| struct l2cap_conf_opt { | |
| __u8 type; | |
| __u8 len; | |
| __u8 val[0]; | |
| } __packed; | |
| #define L2CAP_CONF_OPT_SIZE 2 | |
| #define L2CAP_CONF_HINT 0x80 | |
| #define L2CAP_CONF_MASK 0x7f | |
| #define L2CAP_CONF_MTU 0x01 | |
| #define L2CAP_CONF_FLUSH_TO 0x02 | |
| #define L2CAP_CONF_QOS 0x03 | |
| #define L2CAP_CONF_RFC 0x04 | |
| #define L2CAP_CONF_FCS 0x05 | |
| #define L2CAP_CONF_EFS 0x06 | |
| #define L2CAP_CONF_EWS 0x07 | |
| #define L2CAP_CONF_MAX_SIZE 22 | |
| struct l2cap_conf_rfc { | |
| __u8 mode; | |
| __u8 txwin_size; | |
| __u8 max_transmit; | |
| __le16 retrans_timeout; | |
| __le16 monitor_timeout; | |
| __le16 max_pdu_size; | |
| } __packed; | |
| #define L2CAP_MODE_BASIC 0x00 | |
| #define L2CAP_MODE_RETRANS 0x01 | |
| #define L2CAP_MODE_FLOWCTL 0x02 | |
| #define L2CAP_MODE_ERTM 0x03 | |
| #define L2CAP_MODE_STREAMING 0x04 | |
| struct l2cap_conf_efs { | |
| __u8 id; | |
| __u8 stype; | |
| __le16 msdu; | |
| __le32 sdu_itime; | |
| __le32 acc_lat; | |
| __le32 flush_to; | |
| } __packed; | |
| #define L2CAP_SERV_NOTRAFIC 0x00 | |
| #define L2CAP_SERV_BESTEFFORT 0x01 | |
| #define L2CAP_SERV_GUARANTEED 0x02 | |
| #define L2CAP_BESTEFFORT_ID 0x01 | |
| struct l2cap_disconn_req { | |
| __le16 dcid; | |
| __le16 scid; | |
| } __packed; | |
| struct l2cap_disconn_rsp { | |
| __le16 dcid; | |
| __le16 scid; | |
| } __packed; | |
| struct l2cap_info_req { | |
| __le16 type; | |
| } __packed; | |
| struct l2cap_info_rsp { | |
| __le16 type; | |
| __le16 result; | |
| __u8 data[0]; | |
| } __packed; | |
| struct l2cap_create_chan_req { | |
| __le16 psm; | |
| __le16 scid; | |
| __u8 amp_id; | |
| } __packed; | |
| struct l2cap_create_chan_rsp { | |
| __le16 dcid; | |
| __le16 scid; | |
| __le16 result; | |
| __le16 status; | |
| } __packed; | |
| struct l2cap_move_chan_req { | |
| __le16 icid; | |
| __u8 dest_amp_id; | |
| } __packed; | |
| struct l2cap_move_chan_rsp { | |
| __le16 icid; | |
| __le16 result; | |
| } __packed; | |
| #define L2CAP_MR_SUCCESS 0x0000 | |
| #define L2CAP_MR_PEND 0x0001 | |
| #define L2CAP_MR_BAD_ID 0x0002 | |
| #define L2CAP_MR_SAME_ID 0x0003 | |
| #define L2CAP_MR_NOT_SUPP 0x0004 | |
| #define L2CAP_MR_COLLISION 0x0005 | |
| #define L2CAP_MR_NOT_ALLOWED 0x0006 | |
| struct l2cap_move_chan_cfm { | |
| __le16 icid; | |
| __le16 result; | |
| } __packed; | |
| #define L2CAP_MC_CONFIRMED 0x0000 | |
| #define L2CAP_MC_UNCONFIRMED 0x0001 | |
| struct l2cap_move_chan_cfm_rsp { | |
| __le16 icid; | |
| } __packed; | |
| /* info type */ | |
| #define L2CAP_IT_CL_MTU 0x0001 | |
| #define L2CAP_IT_FEAT_MASK 0x0002 | |
| #define L2CAP_IT_FIXED_CHAN 0x0003 | |
| /* info result */ | |
| #define L2CAP_IR_SUCCESS 0x0000 | |
| #define L2CAP_IR_NOTSUPP 0x0001 | |
| struct l2cap_conn_param_update_req { | |
| __le16 min; | |
| __le16 max; | |
| __le16 latency; | |
| __le16 to_multiplier; | |
| } __packed; | |
| struct l2cap_conn_param_update_rsp { | |
| __le16 result; | |
| } __packed; | |
| /* Connection Parameters result */ | |
| #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 | |
| #define L2CAP_CONN_PARAM_REJECTED 0x0001 | |
| /* ----- L2CAP channels and connections ----- */ | |
| struct srej_list { | |
| __u16 tx_seq; | |
| struct list_head list; | |
| }; | |
| struct l2cap_chan { | |
| struct sock *sk; | |
| struct l2cap_conn *conn; | |
| __u8 state; | |
| atomic_t refcnt; | |
| __le16 psm; | |
| __u16 dcid; | |
| __u16 scid; | |
| __u16 imtu; | |
| __u16 omtu; | |
| __u16 flush_to; | |
| __u8 mode; | |
| __u8 chan_type; | |
| __u8 chan_policy; | |
| __le16 sport; | |
| __u8 sec_level; | |
| __u8 ident; | |
| __u8 conf_req[64]; | |
| __u8 conf_len; | |
| __u8 num_conf_req; | |
| __u8 num_conf_rsp; | |
| __u8 fcs; | |
| __u16 tx_win; | |
| __u16 tx_win_max; | |
| __u8 max_tx; | |
| __u16 retrans_timeout; | |
| __u16 monitor_timeout; | |
| __u16 mps; | |
| unsigned long conf_state; | |
| unsigned long conn_state; | |
| unsigned long flags; | |
| __u16 next_tx_seq; | |
| __u16 expected_ack_seq; | |
| __u16 expected_tx_seq; | |
| __u16 buffer_seq; | |
| __u16 buffer_seq_srej; | |
| __u16 srej_save_reqseq; | |
| __u16 frames_sent; | |
| __u16 unacked_frames; | |
| __u8 retry_count; | |
| __u8 num_acked; | |
| __u16 sdu_len; | |
| struct sk_buff *sdu; | |
| struct sk_buff *sdu_last_frag; | |
| __u16 remote_tx_win; | |
| __u8 remote_max_tx; | |
| __u16 remote_mps; | |
| __u8 local_id; | |
| __u8 local_stype; | |
| __u16 local_msdu; | |
| __u32 local_sdu_itime; | |
| __u32 local_acc_lat; | |
| __u32 local_flush_to; | |
| __u8 remote_id; | |
| __u8 remote_stype; | |
| __u16 remote_msdu; | |
| __u32 remote_sdu_itime; | |
| __u32 remote_acc_lat; | |
| __u32 remote_flush_to; | |
| struct delayed_work chan_timer; | |
| struct delayed_work retrans_timer; | |
| struct delayed_work monitor_timer; | |
| struct delayed_work ack_timer; | |
| struct sk_buff *tx_send_head; | |
| struct sk_buff_head tx_q; | |
| struct sk_buff_head srej_q; | |
| struct list_head srej_l; | |
| struct list_head list; | |
| struct list_head global_l; | |
| void *data; | |
| struct l2cap_ops *ops; | |
| struct mutex lock; | |
| }; | |
| struct l2cap_ops { | |
| char *name; | |
| struct l2cap_chan *(*new_connection) (void *data); | |
| int (*recv) (void *data, struct sk_buff *skb); | |
| void (*close) (void *data); | |
| void (*state_change) (void *data, int state); | |
| struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan, | |
| unsigned long len, int nb, int *err); | |
| }; | |
| struct l2cap_conn { | |
| struct hci_conn *hcon; | |
| struct hci_chan *hchan; | |
| bdaddr_t *dst; | |
| bdaddr_t *src; | |
| unsigned int mtu; | |
| __u32 feat_mask; | |
| __u8 fixed_chan_mask; | |
| __u8 info_state; | |
| __u8 info_ident; | |
| struct delayed_work info_timer; | |
| spinlock_t lock; | |
| struct sk_buff *rx_skb; | |
| __u32 rx_len; | |
| __u8 tx_ident; | |
| __u8 disc_reason; | |
| struct delayed_work security_timer; | |
| struct smp_chan *smp_chan; | |
| struct list_head chan_l; | |
| struct mutex chan_lock; | |
| }; | |
| #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 | |
| #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 | |
| #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 | |
| #define L2CAP_CHAN_RAW 1 | |
| #define L2CAP_CHAN_CONN_LESS 2 | |
| #define L2CAP_CHAN_CONN_ORIENTED 3 | |
| /* ----- L2CAP socket info ----- */ | |
| #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) | |
| struct l2cap_pinfo { | |
| struct bt_sock bt; | |
| struct l2cap_chan *chan; | |
| struct sk_buff *rx_busy_skb; | |
| }; | |
| enum { | |
| CONF_REQ_SENT, | |
| CONF_INPUT_DONE, | |
| CONF_OUTPUT_DONE, | |
| CONF_MTU_DONE, | |
| CONF_MODE_DONE, | |
| CONF_CONNECT_PEND, | |
| CONF_NO_FCS_RECV, | |
| CONF_STATE2_DEVICE, | |
| CONF_EWS_RECV, | |
| CONF_LOC_CONF_PEND, | |
| CONF_REM_CONF_PEND, | |
| }; | |
| #define L2CAP_CONF_MAX_CONF_REQ 2 | |
| #define L2CAP_CONF_MAX_CONF_RSP 2 | |
| enum { | |
| CONN_SREJ_SENT, | |
| CONN_WAIT_F, | |
| CONN_SREJ_ACT, | |
| CONN_SEND_PBIT, | |
| CONN_REMOTE_BUSY, | |
| CONN_LOCAL_BUSY, | |
| CONN_REJ_ACT, | |
| CONN_SEND_FBIT, | |
| CONN_RNR_SENT, | |
| }; | |
| /* Definitions for flags in l2cap_chan */ | |
| enum { | |
| FLAG_ROLE_SWITCH, | |
| FLAG_FORCE_ACTIVE, | |
| FLAG_FORCE_RELIABLE, | |
| FLAG_FLUSHABLE, | |
| FLAG_EXT_CTRL, | |
| FLAG_EFS_ENABLE, | |
| }; | |
| static inline void l2cap_chan_hold(struct l2cap_chan *c) | |
| { | |
| atomic_inc(&c->refcnt); | |
| } | |
| static inline void l2cap_chan_put(struct l2cap_chan *c) | |
| { | |
| if (atomic_dec_and_test(&c->refcnt)) | |
| kfree(c); | |
| } | |
| static inline void l2cap_chan_lock(struct l2cap_chan *chan) | |
| { | |
| mutex_lock(&chan->lock); | |
| } | |
| static inline void l2cap_chan_unlock(struct l2cap_chan *chan) | |
| { | |
| mutex_unlock(&chan->lock); | |
| } | |
| static inline void l2cap_set_timer(struct l2cap_chan *chan, | |
| struct delayed_work *work, long timeout) | |
| { | |
| BT_DBG("chan %p state %s timeout %ld", chan, | |
| state_to_string(chan->state), timeout); | |
| if (!cancel_delayed_work(work)) | |
| l2cap_chan_hold(chan); | |
| schedule_delayed_work(work, timeout); | |
| } | |
| static inline bool l2cap_clear_timer(struct l2cap_chan *chan, | |
| struct delayed_work *work) | |
| { | |
| bool ret; | |
| ret = cancel_delayed_work(work); | |
| if (ret) | |
| l2cap_chan_put(chan); | |
| return ret; | |
| } | |
| #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) | |
| #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer) | |
| #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \ | |
| msecs_to_jiffies(L2CAP_DEFAULT_RETRANS_TO)); | |
| #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer) | |
| #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \ | |
| msecs_to_jiffies(L2CAP_DEFAULT_MONITOR_TO)); | |
| #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer) | |
| #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ | |
| msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO)); | |
| #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer) | |
| static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2) | |
| { | |
| int offset; | |
| offset = (seq1 - seq2) % (chan->tx_win_max + 1); | |
| if (offset < 0) | |
| offset += (chan->tx_win_max + 1); | |
| return offset; | |
| } | |
| static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq) | |
| { | |
| return (seq + 1) % (chan->tx_win_max + 1); | |
| } | |
| static inline int l2cap_tx_window_full(struct l2cap_chan *ch) | |
| { | |
| int sub; | |
| sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64; | |
| if (sub < 0) | |
| sub += 64; | |
| return sub == ch->remote_tx_win; | |
| } | |
| static inline __u16 __get_reqseq(struct l2cap_chan *chan, __u32 ctrl) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return (ctrl & L2CAP_EXT_CTRL_REQSEQ) >> | |
| L2CAP_EXT_CTRL_REQSEQ_SHIFT; | |
| else | |
| return (ctrl & L2CAP_CTRL_REQSEQ) >> L2CAP_CTRL_REQSEQ_SHIFT; | |
| } | |
| static inline __u32 __set_reqseq(struct l2cap_chan *chan, __u32 reqseq) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return (reqseq << L2CAP_EXT_CTRL_REQSEQ_SHIFT) & | |
| L2CAP_EXT_CTRL_REQSEQ; | |
| else | |
| return (reqseq << L2CAP_CTRL_REQSEQ_SHIFT) & L2CAP_CTRL_REQSEQ; | |
| } | |
| static inline __u16 __get_txseq(struct l2cap_chan *chan, __u32 ctrl) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return (ctrl & L2CAP_EXT_CTRL_TXSEQ) >> | |
| L2CAP_EXT_CTRL_TXSEQ_SHIFT; | |
| else | |
| return (ctrl & L2CAP_CTRL_TXSEQ) >> L2CAP_CTRL_TXSEQ_SHIFT; | |
| } | |
| static inline __u32 __set_txseq(struct l2cap_chan *chan, __u32 txseq) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return (txseq << L2CAP_EXT_CTRL_TXSEQ_SHIFT) & | |
| L2CAP_EXT_CTRL_TXSEQ; | |
| else | |
| return (txseq << L2CAP_CTRL_TXSEQ_SHIFT) & L2CAP_CTRL_TXSEQ; | |
| } | |
| static inline bool __is_sframe(struct l2cap_chan *chan, __u32 ctrl) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return ctrl & L2CAP_EXT_CTRL_FRAME_TYPE; | |
| else | |
| return ctrl & L2CAP_CTRL_FRAME_TYPE; | |
| } | |
| static inline __u32 __set_sframe(struct l2cap_chan *chan) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return L2CAP_EXT_CTRL_FRAME_TYPE; | |
| else | |
| return L2CAP_CTRL_FRAME_TYPE; | |
| } | |
| static inline __u8 __get_ctrl_sar(struct l2cap_chan *chan, __u32 ctrl) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return (ctrl & L2CAP_EXT_CTRL_SAR) >> L2CAP_EXT_CTRL_SAR_SHIFT; | |
| else | |
| return (ctrl & L2CAP_CTRL_SAR) >> L2CAP_CTRL_SAR_SHIFT; | |
| } | |
| static inline __u32 __set_ctrl_sar(struct l2cap_chan *chan, __u32 sar) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return (sar << L2CAP_EXT_CTRL_SAR_SHIFT) & L2CAP_EXT_CTRL_SAR; | |
| else | |
| return (sar << L2CAP_CTRL_SAR_SHIFT) & L2CAP_CTRL_SAR; | |
| } | |
| static inline bool __is_sar_start(struct l2cap_chan *chan, __u32 ctrl) | |
| { | |
| return __get_ctrl_sar(chan, ctrl) == L2CAP_SAR_START; | |
| } | |
| static inline __u32 __get_sar_mask(struct l2cap_chan *chan) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return L2CAP_EXT_CTRL_SAR; | |
| else | |
| return L2CAP_CTRL_SAR; | |
| } | |
| static inline __u8 __get_ctrl_super(struct l2cap_chan *chan, __u32 ctrl) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return (ctrl & L2CAP_EXT_CTRL_SUPERVISE) >> | |
| L2CAP_EXT_CTRL_SUPER_SHIFT; | |
| else | |
| return (ctrl & L2CAP_CTRL_SUPERVISE) >> L2CAP_CTRL_SUPER_SHIFT; | |
| } | |
| static inline __u32 __set_ctrl_super(struct l2cap_chan *chan, __u32 super) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return (super << L2CAP_EXT_CTRL_SUPER_SHIFT) & | |
| L2CAP_EXT_CTRL_SUPERVISE; | |
| else | |
| return (super << L2CAP_CTRL_SUPER_SHIFT) & | |
| L2CAP_CTRL_SUPERVISE; | |
| } | |
| static inline __u32 __set_ctrl_final(struct l2cap_chan *chan) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return L2CAP_EXT_CTRL_FINAL; | |
| else | |
| return L2CAP_CTRL_FINAL; | |
| } | |
| static inline bool __is_ctrl_final(struct l2cap_chan *chan, __u32 ctrl) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return ctrl & L2CAP_EXT_CTRL_FINAL; | |
| else | |
| return ctrl & L2CAP_CTRL_FINAL; | |
| } | |
| static inline __u32 __set_ctrl_poll(struct l2cap_chan *chan) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return L2CAP_EXT_CTRL_POLL; | |
| else | |
| return L2CAP_CTRL_POLL; | |
| } | |
| static inline bool __is_ctrl_poll(struct l2cap_chan *chan, __u32 ctrl) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return ctrl & L2CAP_EXT_CTRL_POLL; | |
| else | |
| return ctrl & L2CAP_CTRL_POLL; | |
| } | |
| static inline __u32 __get_control(struct l2cap_chan *chan, void *p) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return get_unaligned_le32(p); | |
| else | |
| return get_unaligned_le16(p); | |
| } | |
| static inline void __put_control(struct l2cap_chan *chan, __u32 control, | |
| void *p) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return put_unaligned_le32(control, p); | |
| else | |
| return put_unaligned_le16(control, p); | |
| } | |
| static inline __u8 __ctrl_size(struct l2cap_chan *chan) | |
| { | |
| if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
| return L2CAP_EXT_HDR_SIZE - L2CAP_HDR_SIZE; | |
| else | |
| return L2CAP_ENH_HDR_SIZE - L2CAP_HDR_SIZE; | |
| } | |
| extern bool disable_ertm; | |
| int l2cap_init_sockets(void); | |
| void l2cap_cleanup_sockets(void); | |
| void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); | |
| int __l2cap_wait_ack(struct sock *sk); | |
| int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); | |
| int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); | |
| struct l2cap_chan *l2cap_chan_create(struct sock *sk); | |
| void l2cap_chan_close(struct l2cap_chan *chan, int reason); | |
| void l2cap_chan_destroy(struct l2cap_chan *chan); | |
| int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, | |
| bdaddr_t *dst); | |
| int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len, | |
| u32 priority); | |
| void l2cap_chan_busy(struct l2cap_chan *chan, int busy); | |
| int l2cap_chan_check_security(struct l2cap_chan *chan); | |
| #endif /* __L2CAP_H */ |