diff options
Diffstat (limited to 'include/net/bluetooth/l2cap.h')
| -rw-r--r-- | include/net/bluetooth/l2cap.h | 134 |
1 files changed, 119 insertions, 15 deletions
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h index e919fca1072a..9516f4b4a3c2 100644 --- a/include/net/bluetooth/l2cap.h +++ b/include/net/bluetooth/l2cap.h @@ -27,12 +27,14 @@ /* L2CAP defaults */ #define L2CAP_DEFAULT_MTU 672 +#define L2CAP_DEFAULT_MIN_MTU 48 #define L2CAP_DEFAULT_FLUSH_TO 0xffff -#define L2CAP_DEFAULT_RX_WINDOW 1 -#define L2CAP_DEFAULT_MAX_RECEIVE 1 -#define L2CAP_DEFAULT_RETRANS_TO 300 /* 300 milliseconds */ -#define L2CAP_DEFAULT_MONITOR_TO 1000 /* 1 second */ -#define L2CAP_DEFAULT_MAX_RX_APDU 0xfff7 +#define L2CAP_DEFAULT_TX_WINDOW 63 +#define L2CAP_DEFAULT_NUM_TO_ACK (L2CAP_DEFAULT_TX_WINDOW/5) +#define L2CAP_DEFAULT_MAX_TX 3 +#define L2CAP_DEFAULT_RETRANS_TO 1000 /* 1 second */ +#define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ +#define L2CAP_DEFAULT_MAX_PDU_SIZE 672 #define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */ #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */ @@ -52,6 +54,7 @@ struct l2cap_options { __u16 imtu; __u16 flush_to; __u8 mode; + __u8 fcs; }; #define L2CAP_CONNINFO 0x02 @@ -93,6 +96,32 @@ struct l2cap_conninfo { #define L2CAP_FCS_NONE 0x00 #define L2CAP_FCS_CRC16 0x01 +/* L2CAP Control Field bit masks */ +#define L2CAP_CTRL_SAR 0xC000 +#define L2CAP_CTRL_REQSEQ 0x3F00 +#define L2CAP_CTRL_TXSEQ 0x007E +#define L2CAP_CTRL_RETRANS 0x0080 +#define L2CAP_CTRL_FINAL 0x0080 +#define L2CAP_CTRL_POLL 0x0010 +#define L2CAP_CTRL_SUPERVISE 0x000C +#define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ + +#define L2CAP_CTRL_TXSEQ_SHIFT 1 +#define L2CAP_CTRL_REQSEQ_SHIFT 8 +#define L2CAP_CTRL_SAR_SHIFT 14 + +/* L2CAP Supervisory Function */ +#define L2CAP_SUPER_RCV_READY 0x0000 +#define L2CAP_SUPER_REJECT 0x0004 +#define L2CAP_SUPER_RCV_NOT_READY 0x0008 +#define L2CAP_SUPER_SELECT_REJECT 0x000C + +/* L2CAP Segmentation and Reassembly */ +#define L2CAP_SDU_UNSEGMENTED 0x0000 +#define L2CAP_SDU_START 0x4000 +#define L2CAP_SDU_END 0x8000 +#define L2CAP_SDU_CONTINUE 0xC000 + /* L2CAP structures */ struct l2cap_hdr { __le16 len; @@ -190,7 +219,7 @@ struct l2cap_conf_rfc { #define L2CAP_MODE_RETRANS 0x01 #define L2CAP_MODE_FLOWCTL 0x02 #define L2CAP_MODE_ERTM 0x03 -#define L2CAP_MODE_STREAM 0x04 +#define L2CAP_MODE_STREAMING 0x04 struct l2cap_disconn_req { __le16 dcid; @@ -261,6 +290,14 @@ struct l2cap_conn { /* ----- L2CAP channel and socket info ----- */ #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) +#define TX_QUEUE(sk) (&l2cap_pi(sk)->tx_queue) +#define SREJ_QUEUE(sk) (&l2cap_pi(sk)->srej_queue) +#define SREJ_LIST(sk) (&l2cap_pi(sk)->srej_l.list) + +struct srej_list { + __u8 tx_seq; + struct list_head list; +}; struct l2cap_pinfo { struct bt_sock bt; @@ -271,30 +308,97 @@ struct l2cap_pinfo { __u16 imtu; __u16 omtu; __u16 flush_to; - __u8 sec_level; + __u8 mode; + __u8 num_conf_req; + __u8 num_conf_rsp; + + __u8 fcs; + __u8 sec_level; __u8 role_switch; - __u8 force_reliable; + __u8 force_reliable; __u8 conf_req[64]; __u8 conf_len; __u8 conf_state; - __u8 conf_retry; + __u8 conn_state; + + __u8 next_tx_seq; + __u8 expected_ack_seq; + __u8 req_seq; + __u8 expected_tx_seq; + __u8 buffer_seq; + __u8 buffer_seq_srej; + __u8 srej_save_reqseq; + __u8 unacked_frames; + __u8 retry_count; + __u8 num_to_ack; + __u16 sdu_len; + __u16 partial_sdu_len; + struct sk_buff *sdu; __u8 ident; + __u8 remote_tx_win; + __u8 remote_max_tx; + __u16 retrans_timeout; + __u16 monitor_timeout; + __u16 max_pdu_size; + __le16 sport; + struct timer_list retrans_timer; + struct timer_list monitor_timer; + struct sk_buff_head tx_queue; + struct sk_buff_head srej_queue; + struct srej_list srej_l; struct l2cap_conn *conn; struct sock *next_c; struct sock *prev_c; }; -#define L2CAP_CONF_REQ_SENT 0x01 -#define L2CAP_CONF_INPUT_DONE 0x02 -#define L2CAP_CONF_OUTPUT_DONE 0x04 -#define L2CAP_CONF_CONNECT_PEND 0x80 - -#define L2CAP_CONF_MAX_RETRIES 2 +#define L2CAP_CONF_REQ_SENT 0x01 +#define L2CAP_CONF_INPUT_DONE 0x02 +#define L2CAP_CONF_OUTPUT_DONE 0x04 +#define L2CAP_CONF_MTU_DONE 0x08 +#define L2CAP_CONF_MODE_DONE 0x10 +#define L2CAP_CONF_CONNECT_PEND 0x20 +#define L2CAP_CONF_NO_FCS_RECV 0x40 +#define L2CAP_CONF_STATE2_DEVICE 0x80 + +#define L2CAP_CONF_MAX_CONF_REQ 2 +#define L2CAP_CONF_MAX_CONF_RSP 2 + +#define L2CAP_CONN_SAR_SDU 0x01 +#define L2CAP_CONN_SREJ_SENT 0x02 +#define L2CAP_CONN_WAIT_F 0x04 +#define L2CAP_CONN_SREJ_ACT 0x08 +#define L2CAP_CONN_SEND_PBIT 0x10 +#define L2CAP_CONN_REMOTE_BUSY 0x20 +#define L2CAP_CONN_LOCAL_BUSY 0x40 + +#define __mod_retrans_timer() mod_timer(&l2cap_pi(sk)->retrans_timer, \ + jiffies + msecs_to_jiffies(L2CAP_DEFAULT_RETRANS_TO)); +#define __mod_monitor_timer() mod_timer(&l2cap_pi(sk)->monitor_timer, \ + jiffies + msecs_to_jiffies(L2CAP_DEFAULT_MONITOR_TO)); + +static inline int l2cap_tx_window_full(struct sock *sk) +{ + struct l2cap_pinfo *pi = l2cap_pi(sk); + int sub; + + sub = (pi->next_tx_seq - pi->expected_ack_seq) % 64; + + if (sub < 0) + sub += 64; + + return (sub == pi->remote_tx_win); +} + +#define __get_txseq(ctrl) ((ctrl) & L2CAP_CTRL_TXSEQ) >> 1 +#define __get_reqseq(ctrl) ((ctrl) & L2CAP_CTRL_REQSEQ) >> 8 +#define __is_iframe(ctrl) !((ctrl) & L2CAP_CTRL_FRAME_TYPE) +#define __is_sframe(ctrl) (ctrl) & L2CAP_CTRL_FRAME_TYPE +#define __is_sar_start(ctrl) ((ctrl) & L2CAP_CTRL_SAR) == L2CAP_SDU_START void l2cap_load(void); |