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Diffstat (limited to 'include/net/bluetooth/l2cap.h')
-rw-r--r--include/net/bluetooth/l2cap.h93
1 files changed, 79 insertions, 14 deletions
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 9b242c6bf55..1c7d1cd5e67 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -44,6 +44,7 @@
#define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF
#define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF
#define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF
+#define L2CAP_BREDR_MAX_PAYLOAD 1019 /* 3-DH5 packet */
#define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100)
#define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000)
@@ -57,6 +58,7 @@ struct sockaddr_l2 {
__le16 l2_psm;
bdaddr_t l2_bdaddr;
__le16 l2_cid;
+ __u8 l2_bdaddr_type;
};
/* L2CAP socket options */
@@ -139,6 +141,8 @@ struct l2cap_conninfo {
#define L2CAP_CTRL_TXSEQ_SHIFT 1
#define L2CAP_CTRL_SUPER_SHIFT 2
+#define L2CAP_CTRL_POLL_SHIFT 4
+#define L2CAP_CTRL_FINAL_SHIFT 7
#define L2CAP_CTRL_REQSEQ_SHIFT 8
#define L2CAP_CTRL_SAR_SHIFT 14
@@ -152,9 +156,11 @@ struct l2cap_conninfo {
#define L2CAP_EXT_CTRL_FINAL 0x00000002
#define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */
+#define L2CAP_EXT_CTRL_FINAL_SHIFT 1
#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_POLL_SHIFT 18
#define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18
/* L2CAP Supervisory Function */
@@ -186,6 +192,8 @@ struct l2cap_hdr {
#define L2CAP_FCS_SIZE 2
#define L2CAP_SDULEN_SIZE 2
#define L2CAP_PSMLEN_SIZE 2
+#define L2CAP_ENH_CTRL_SIZE 2
+#define L2CAP_EXT_CTRL_SIZE 4
struct l2cap_cmd_hdr {
__u8 code;
@@ -401,6 +409,16 @@ struct l2cap_conn_param_update_rsp {
#define L2CAP_CONN_PARAM_REJECTED 0x0001
/* ----- L2CAP channels and connections ----- */
+struct l2cap_seq_list {
+ __u16 head;
+ __u16 tail;
+ __u16 mask;
+ __u16 *list;
+};
+
+#define L2CAP_SEQ_LIST_CLEAR 0xFFFF
+#define L2CAP_SEQ_LIST_TAIL 0x8000
+
struct srej_list {
__u16 tx_seq;
struct list_head list;
@@ -446,6 +464,9 @@ struct l2cap_chan {
__u16 monitor_timeout;
__u16 mps;
+ __u8 tx_state;
+ __u8 rx_state;
+
unsigned long conf_state;
unsigned long conn_state;
unsigned long flags;
@@ -456,9 +477,11 @@ struct l2cap_chan {
__u16 buffer_seq;
__u16 buffer_seq_srej;
__u16 srej_save_reqseq;
+ __u16 last_acked_seq;
__u16 frames_sent;
__u16 unacked_frames;
__u8 retry_count;
+ __u16 srej_queue_next;
__u8 num_acked;
__u16 sdu_len;
struct sk_buff *sdu;
@@ -490,6 +513,8 @@ struct l2cap_chan {
struct sk_buff *tx_send_head;
struct sk_buff_head tx_q;
struct sk_buff_head srej_q;
+ struct l2cap_seq_list srej_list;
+ struct l2cap_seq_list retrans_list;
struct list_head srej_l;
struct list_head list;
@@ -508,8 +533,7 @@ struct l2cap_ops {
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);
-
+ unsigned long len, int nb);
};
struct l2cap_conn {
@@ -600,6 +624,44 @@ enum {
FLAG_EFS_ENABLE,
};
+enum {
+ L2CAP_TX_STATE_XMIT,
+ L2CAP_TX_STATE_WAIT_F,
+};
+
+enum {
+ L2CAP_RX_STATE_RECV,
+ L2CAP_RX_STATE_SREJ_SENT,
+};
+
+enum {
+ L2CAP_TXSEQ_EXPECTED,
+ L2CAP_TXSEQ_EXPECTED_SREJ,
+ L2CAP_TXSEQ_UNEXPECTED,
+ L2CAP_TXSEQ_UNEXPECTED_SREJ,
+ L2CAP_TXSEQ_DUPLICATE,
+ L2CAP_TXSEQ_DUPLICATE_SREJ,
+ L2CAP_TXSEQ_INVALID,
+ L2CAP_TXSEQ_INVALID_IGNORE,
+};
+
+enum {
+ L2CAP_EV_DATA_REQUEST,
+ L2CAP_EV_LOCAL_BUSY_DETECTED,
+ L2CAP_EV_LOCAL_BUSY_CLEAR,
+ L2CAP_EV_RECV_REQSEQ_AND_FBIT,
+ L2CAP_EV_RECV_FBIT,
+ L2CAP_EV_RETRANS_TO,
+ L2CAP_EV_MONITOR_TO,
+ L2CAP_EV_EXPLICIT_POLL,
+ L2CAP_EV_RECV_IFRAME,
+ L2CAP_EV_RECV_RR,
+ L2CAP_EV_RECV_REJ,
+ L2CAP_EV_RECV_RNR,
+ L2CAP_EV_RECV_SREJ,
+ L2CAP_EV_RECV_FRAME,
+};
+
static inline void l2cap_chan_hold(struct l2cap_chan *c)
{
atomic_inc(&c->refcnt);
@@ -622,21 +684,26 @@ static inline void l2cap_chan_unlock(struct l2cap_chan *chan)
}
static inline void l2cap_set_timer(struct l2cap_chan *chan,
- struct delayed_work *work, long timeout)
+ struct delayed_work *work, long timeout)
{
BT_DBG("chan %p state %s timeout %ld", chan,
- state_to_string(chan->state), timeout);
+ state_to_string(chan->state), timeout);
+ /* If delayed work cancelled do not hold(chan)
+ since it is already done with previous set_timer */
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)
+ struct delayed_work *work)
{
bool ret;
+ /* put(chan) if delayed work cancelled otherwise it
+ is done in delayed work function */
ret = cancel_delayed_work(work);
if (ret)
l2cap_chan_put(chan);
@@ -658,13 +725,10 @@ static inline bool l2cap_clear_timer(struct l2cap_chan *chan,
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;
+ if (seq1 >= seq2)
+ return seq1 - seq2;
+ else
+ return chan->tx_win_max + 1 - seq2 + seq1;
}
static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
@@ -852,14 +916,15 @@ 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);
+struct l2cap_chan *l2cap_chan_create(void);
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);
+ bdaddr_t *dst, u8 dst_type);
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);
+void l2cap_chan_set_defaults(struct l2cap_chan *chan);
#endif /* __L2CAP_H */