| /* |
| 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 (100) |
| #define L2CAP_DISC_REJ_TIMEOUT (5000) /* 5 seconds */ |
| #define L2CAP_ENC_TIMEOUT (5000) /* 5 seconds */ |
| #define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */ |
| #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */ |
| |
| /* 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 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 l2cap_conn { |
| struct hci_conn *hcon; |
| struct hci_chan *hchan; |
| |
| bdaddr_t *dst; |
| bdaddr_t *src; |
| |
| unsigned int mtu; |
| |
| __u32 feat_mask; |
| |
| __u8 info_state; |
| __u8 info_ident; |
| |
| struct delayed_work info_work; |
| |
| spinlock_t lock; |
| |
| struct sk_buff *rx_skb; |
| __u32 rx_len; |
| __u8 tx_ident; |
| |
| __u8 disc_reason; |
| |
| struct timer_list 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, |
| }; |
| |
| #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) |
| #define __clear_chan_timer(c) l2cap_clear_timer(&c->chan_timer) |
| #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \ |
| L2CAP_DEFAULT_RETRANS_TO); |
| #define __clear_retrans_timer(c) l2cap_clear_timer(&c->retrans_timer) |
| #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \ |
| L2CAP_DEFAULT_MONITOR_TO); |
| #define __clear_monitor_timer(c) l2cap_clear_timer(&c->monitor_timer) |
| #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ |
| L2CAP_DEFAULT_ACK_TO); |
| #define __clear_ack_timer(c) l2cap_clear_timer(&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 int 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); |
| inline 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 */ |