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Diffstat (limited to 'include/net/bluetooth/l2cap.h')
-rw-r--r--include/net/bluetooth/l2cap.h134
1 files changed, 119 insertions, 15 deletions
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index e919fca1072..9516f4b4a3c 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);