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Diffstat (limited to 'include/net/bluetooth/l2cap.h')
-rw-r--r--include/net/bluetooth/l2cap.h299
1 files changed, 110 insertions, 189 deletions
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 9b242c6bf55b..a7679f8913d2 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -40,10 +40,11 @@
#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_BREDR_MAX_PAYLOAD 1019 /* 3-DH5 packet */
+#define L2CAP_LE_MIN_MTU 23
#define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100)
#define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000)
@@ -51,12 +52,15 @@
#define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000)
#define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000)
+#define L2CAP_A2MP_DEFAULT_MTU 670
+
/* L2CAP socket address */
struct sockaddr_l2 {
sa_family_t l2_family;
__le16 l2_psm;
bdaddr_t l2_bdaddr;
__le16 l2_cid;
+ __u8 l2_bdaddr_type;
};
/* L2CAP socket options */
@@ -139,6 +143,8 @@ 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 +158,11 @@ 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 +194,8 @@ 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;
@@ -221,9 +231,14 @@ struct l2cap_conn_rsp {
__le16 status;
} __packed;
+/* protocol/service multiplexer (PSM) */
+#define L2CAP_PSM_SDP 0x0001
+#define L2CAP_PSM_RFCOMM 0x0003
+
/* channel indentifier */
#define L2CAP_CID_SIGNALING 0x0001
#define L2CAP_CID_CONN_LESS 0x0002
+#define L2CAP_CID_A2MP 0x0003
#define L2CAP_CID_LE_DATA 0x0004
#define L2CAP_CID_LE_SIGNALING 0x0005
#define L2CAP_CID_SMP 0x0006
@@ -263,6 +278,9 @@ struct l2cap_conf_rsp {
#define L2CAP_CONF_PENDING 0x0004
#define L2CAP_CONF_EFS_REJECT 0x0005
+/* configuration req/rsp continuation flag */
+#define L2CAP_CONF_FLAG_CONTINUATION 0x0001
+
struct l2cap_conf_opt {
__u8 type;
__u8 len;
@@ -401,11 +419,16 @@ struct l2cap_conn_param_update_rsp {
#define L2CAP_CONN_PARAM_REJECTED 0x0001
/* ----- L2CAP channels and connections ----- */
-struct srej_list {
- __u16 tx_seq;
- struct list_head list;
+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 l2cap_chan {
struct sock *sk;
@@ -441,11 +464,15 @@ struct l2cap_chan {
__u16 tx_win;
__u16 tx_win_max;
+ __u16 ack_win;
__u8 max_tx;
__u16 retrans_timeout;
__u16 monitor_timeout;
__u16 mps;
+ __u8 tx_state;
+ __u8 rx_state;
+
unsigned long conf_state;
unsigned long conn_state;
unsigned long flags;
@@ -454,12 +481,12 @@ struct l2cap_chan {
__u16 expected_ack_seq;
__u16 expected_tx_seq;
__u16 buffer_seq;
- __u16 buffer_seq_srej;
__u16 srej_save_reqseq;
+ __u16 last_acked_seq;
__u16 frames_sent;
__u16 unacked_frames;
__u8 retry_count;
- __u8 num_acked;
+ __u16 srej_queue_next;
__u16 sdu_len;
struct sk_buff *sdu;
struct sk_buff *sdu_last_frag;
@@ -490,7 +517,8 @@ struct l2cap_chan {
struct sk_buff *tx_send_head;
struct sk_buff_head tx_q;
struct sk_buff_head srej_q;
- struct list_head srej_l;
+ struct l2cap_seq_list srej_list;
+ struct l2cap_seq_list retrans_list;
struct list_head list;
struct list_head global_l;
@@ -503,13 +531,16 @@ struct l2cap_chan {
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_chan *(*new_connection) (struct l2cap_chan *chan);
+ int (*recv) (struct l2cap_chan * chan,
+ struct sk_buff *skb);
+ void (*teardown) (struct l2cap_chan *chan, int err);
+ void (*close) (struct l2cap_chan *chan);
+ void (*state_change) (struct l2cap_chan *chan,
+ int state);
+ void (*ready) (struct l2cap_chan *chan);
struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
- unsigned long len, int nb, int *err);
-
+ unsigned long len, int nb);
};
struct l2cap_conn {
@@ -551,6 +582,7 @@ struct l2cap_conn {
#define L2CAP_CHAN_RAW 1
#define L2CAP_CHAN_CONN_LESS 2
#define L2CAP_CHAN_CONN_ORIENTED 3
+#define L2CAP_CHAN_CONN_FIX_A2MP 4
/* ----- L2CAP socket info ----- */
#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
@@ -573,6 +605,7 @@ enum {
CONF_EWS_RECV,
CONF_LOC_CONF_PEND,
CONF_REM_CONF_PEND,
+ CONF_NOT_COMPLETE,
};
#define L2CAP_CONF_MAX_CONF_REQ 2
@@ -600,13 +633,55 @@ 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)
{
+ BT_DBG("chan %p orig refcnt %d", c, atomic_read(&c->refcnt));
+
atomic_inc(&c->refcnt);
}
static inline void l2cap_chan_put(struct l2cap_chan *c)
{
+ BT_DBG("chan %p orig refcnt %d", c, atomic_read(&c->refcnt));
+
if (atomic_dec_and_test(&c->refcnt))
kfree(c);
}
@@ -622,21 +697,26 @@ 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);
@@ -646,11 +726,7 @@ static inline bool l2cap_clear_timer(struct l2cap_chan *chan,
#define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
#define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
-#define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \
- msecs_to_jiffies(L2CAP_DEFAULT_RETRANS_TO));
#define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
-#define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \
- msecs_to_jiffies(L2CAP_DEFAULT_MONITOR_TO));
#define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
#define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
@@ -658,13 +734,10 @@ 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)
@@ -672,173 +745,17 @@ 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)
+static inline struct l2cap_chan *l2cap_chan_no_new_connection(struct l2cap_chan *chan)
{
- if (test_bit(FLAG_EXT_CTRL, &chan->flags))
- return get_unaligned_le32(p);
- else
- return get_unaligned_le16(p);
+ return NULL;
}
-static inline void __put_control(struct l2cap_chan *chan, __u32 control,
- void *p)
+static inline void l2cap_chan_no_teardown(struct l2cap_chan *chan, int err)
{
- 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)
+static inline void l2cap_chan_no_ready(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 bool disable_ertm;
@@ -852,14 +769,18 @@ 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);
+int l2cap_ertm_init(struct l2cap_chan *chan);
+void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
+void l2cap_chan_del(struct l2cap_chan *chan, int err);
#endif /* __L2CAP_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-19 10:39:35 +0000