diff options
Diffstat (limited to 'include/net/bluetooth/l2cap.h')
| -rw-r--r-- | include/net/bluetooth/l2cap.h | 54 |
1 files changed, 53 insertions, 1 deletions
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h index 6fc76986d70..9bbfbe74d40 100644 --- a/include/net/bluetooth/l2cap.h +++ b/include/net/bluetooth/l2cap.h @@ -29,7 +29,8 @@ #define L2CAP_DEFAULT_MTU 672 #define L2CAP_DEFAULT_MIN_MTU 48 #define L2CAP_DEFAULT_FLUSH_TO 0xffff -#define L2CAP_DEFAULT_TX_WINDOW 1 +#define L2CAP_DEFAULT_TX_WINDOW 63 +#define L2CAP_DEFAULT_NUM_TO_ACK (L2CAP_DEFAULT_TX_WINDOW/5) #define L2CAP_DEFAULT_MAX_RECEIVE 1 #define L2CAP_DEFAULT_RETRANS_TO 300 /* 300 milliseconds */ #define L2CAP_DEFAULT_MONITOR_TO 1000 /* 1 second */ @@ -94,6 +95,31 @@ 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 + +/* 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; @@ -262,6 +288,7 @@ 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) struct l2cap_pinfo { struct bt_sock bt; @@ -285,6 +312,13 @@ struct l2cap_pinfo { __u8 conf_len; __u8 conf_state; + __u8 next_tx_seq; + __u8 expected_ack_seq; + __u8 req_seq; + __u8 expected_tx_seq; + __u8 unacked_frames; + __u8 num_to_ack; + __u8 ident; __u8 remote_tx_win; @@ -295,6 +329,7 @@ struct l2cap_pinfo { __le16 sport; + struct sk_buff_head tx_queue; struct l2cap_conn *conn; struct sock *next_c; struct sock *prev_c; @@ -311,6 +346,23 @@ struct l2cap_pinfo { #define L2CAP_CONF_MAX_CONF_REQ 2 #define L2CAP_CONF_MAX_CONF_RSP 2 +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 void l2cap_load(void); |