summaryrefslogtreecommitdiffstats
path: root/include/net/bluetooth/l2cap.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/net/bluetooth/l2cap.h')
-rw-r--r--include/net/bluetooth/l2cap.h294
1 files changed, 166 insertions, 128 deletions
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 4f4bff1eaed..4f34ad25e75 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -37,7 +37,6 @@
#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_LOCAL_BUSY_TRIES 12
#define L2CAP_LE_DEFAULT_MTU 23
#define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */
@@ -130,6 +129,12 @@ struct l2cap_conninfo {
#define L2CAP_SDU_END 0x8000
#define L2CAP_SDU_CONTINUE 0xC000
+/* L2CAP Command rej. reasons */
+#define L2CAP_REJ_NOT_UNDERSTOOD 0x0000
+#define L2CAP_REJ_MTU_EXCEEDED 0x0001
+#define L2CAP_REJ_INVALID_CID 0x0002
+
+
/* L2CAP structures */
struct l2cap_hdr {
__le16 len;
@@ -144,8 +149,19 @@ struct l2cap_cmd_hdr {
} __packed;
#define L2CAP_CMD_HDR_SIZE 4
-struct l2cap_cmd_rej {
+struct l2cap_cmd_rej_unk {
+ __le16 reason;
+} __packed;
+
+struct l2cap_cmd_rej_mtu {
+ __le16 reason;
+ __le16 max_mtu;
+} __packed;
+
+struct l2cap_cmd_rej_cid {
__le16 reason;
+ __le16 scid;
+ __le16 dcid;
} __packed;
struct l2cap_conn_req {
@@ -276,63 +292,21 @@ struct l2cap_conn_param_update_rsp {
#define L2CAP_CONN_PARAM_ACCEPTED 0x0000
#define L2CAP_CONN_PARAM_REJECTED 0x0001
-/* ----- L2CAP connections ----- */
-struct l2cap_chan_list {
- struct sock *head;
- rwlock_t lock;
- long num;
-};
-
-struct l2cap_conn {
- struct hci_conn *hcon;
-
- bdaddr_t *dst;
- bdaddr_t *src;
-
- unsigned int mtu;
-
- __u32 feat_mask;
-
- __u8 info_state;
- __u8 info_ident;
-
- struct timer_list info_timer;
-
- spinlock_t lock;
-
- struct sk_buff *rx_skb;
- __u32 rx_len;
- __u8 rx_ident;
- __u8 tx_ident;
-
- __u8 disc_reason;
-
- struct l2cap_chan_list chan_list;
+/* ----- L2CAP channels and connections ----- */
+struct srej_list {
+ __u8 tx_seq;
+ struct list_head list;
};
-struct sock_del_list {
+struct l2cap_chan {
struct sock *sk;
- struct list_head list;
-};
-#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
-#define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
-#define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
+ struct l2cap_conn *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 BUSY_QUEUE(sk) (&l2cap_pi(sk)->busy_queue)
-#define SREJ_LIST(sk) (&l2cap_pi(sk)->srej_l.list)
+ __u8 state;
-struct srej_list {
- __u8 tx_seq;
- struct list_head list;
-};
+ atomic_t refcnt;
-struct l2cap_pinfo {
- struct bt_sock bt;
__le16 psm;
__u16 dcid;
__u16 scid;
@@ -341,19 +315,33 @@ struct l2cap_pinfo {
__u16 omtu;
__u16 flush_to;
__u8 mode;
- __u8 num_conf_req;
- __u8 num_conf_rsp;
+ __u8 chan_type;
+
+ __le16 sport;
- __u8 fcs;
__u8 sec_level;
__u8 role_switch;
__u8 force_reliable;
__u8 flushable;
+ __u8 force_active;
+
+ __u8 ident;
__u8 conf_req[64];
__u8 conf_len;
- __u8 conf_state;
- __u16 conn_state;
+ __u8 num_conf_req;
+ __u8 num_conf_rsp;
+
+ __u8 fcs;
+
+ __u8 tx_win;
+ __u8 max_tx;
+ __u16 retrans_timeout;
+ __u16 monitor_timeout;
+ __u16 mps;
+
+ unsigned long conf_state;
+ unsigned long conn_state;
__u8 next_tx_seq;
__u8 expected_ack_seq;
@@ -369,74 +357,137 @@ struct l2cap_pinfo {
__u16 partial_sdu_len;
struct sk_buff *sdu;
- __u8 ident;
-
- __u8 tx_win;
- __u8 max_tx;
__u8 remote_tx_win;
__u8 remote_max_tx;
- __u16 retrans_timeout;
- __u16 monitor_timeout;
__u16 remote_mps;
- __u16 mps;
-
- __le16 sport;
+ struct timer_list chan_timer;
struct timer_list retrans_timer;
struct timer_list monitor_timer;
struct timer_list ack_timer;
- struct sk_buff_head tx_queue;
- struct sk_buff_head srej_queue;
- struct sk_buff_head busy_queue;
- struct work_struct busy_work;
- struct srej_list srej_l;
- struct l2cap_conn *conn;
- struct sock *next_c;
- struct sock *prev_c;
+ struct sk_buff *tx_send_head;
+ struct sk_buff_head tx_q;
+ struct sk_buff_head srej_q;
+ struct list_head srej_l;
+
+ struct list_head list;
+ struct list_head global_l;
+
+ void *data;
+ struct l2cap_ops *ops;
+};
+
+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);
};
-#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
+struct l2cap_conn {
+ struct hci_conn *hcon;
+
+ bdaddr_t *dst;
+ bdaddr_t *src;
+
+ unsigned int mtu;
+
+ __u32 feat_mask;
+
+ __u8 info_state;
+ __u8 info_ident;
+
+ struct timer_list info_timer;
+
+ spinlock_t lock;
+
+ struct sk_buff *rx_skb;
+ __u32 rx_len;
+ __u8 tx_ident;
+
+ __u8 disc_reason;
+
+ __u8 preq[7]; /* SMP Pairing Request */
+ __u8 prsp[7]; /* SMP Pairing Response */
+ __u8 prnd[16]; /* SMP Pairing Random */
+ __u8 pcnf[16]; /* SMP Pairing Confirm */
+ __u8 tk[16]; /* SMP Temporary Key */
+ __u8 smp_key_size;
+
+ struct timer_list security_timer;
+
+ struct list_head chan_l;
+ rwlock_t chan_lock;
+};
+
+#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
+#define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
+#define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
+
+#define L2CAP_CHAN_RAW 1
+#define L2CAP_CHAN_CONN_LESS 2
+#define L2CAP_CHAN_CONN_ORIENTED 3
+
+/* ----- L2CAP socket info ----- */
+#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
+
+struct l2cap_pinfo {
+ struct bt_sock bt;
+ struct l2cap_chan *chan;
+ struct sk_buff *rx_busy_skb;
+};
+
+enum {
+ CONF_REQ_SENT,
+ CONF_INPUT_DONE,
+ CONF_OUTPUT_DONE,
+ CONF_MTU_DONE,
+ CONF_MODE_DONE,
+ CONF_CONNECT_PEND,
+ CONF_NO_FCS_RECV,
+ CONF_STATE2_DEVICE,
+};
#define L2CAP_CONF_MAX_CONF_REQ 2
#define L2CAP_CONF_MAX_CONF_RSP 2
-#define L2CAP_CONN_SAR_SDU 0x0001
-#define L2CAP_CONN_SREJ_SENT 0x0002
-#define L2CAP_CONN_WAIT_F 0x0004
-#define L2CAP_CONN_SREJ_ACT 0x0008
-#define L2CAP_CONN_SEND_PBIT 0x0010
-#define L2CAP_CONN_REMOTE_BUSY 0x0020
-#define L2CAP_CONN_LOCAL_BUSY 0x0040
-#define L2CAP_CONN_REJ_ACT 0x0080
-#define L2CAP_CONN_SEND_FBIT 0x0100
-#define L2CAP_CONN_RNR_SENT 0x0200
-#define L2CAP_CONN_SAR_RETRY 0x0400
-
-#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));
-#define __mod_ack_timer() mod_timer(&l2cap_pi(sk)->ack_timer, \
- jiffies + msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
-
-static inline int l2cap_tx_window_full(struct sock *sk)
+enum {
+ CONN_SAR_SDU,
+ CONN_SREJ_SENT,
+ CONN_WAIT_F,
+ CONN_SREJ_ACT,
+ CONN_SEND_PBIT,
+ CONN_REMOTE_BUSY,
+ CONN_LOCAL_BUSY,
+ CONN_REJ_ACT,
+ CONN_SEND_FBIT,
+ CONN_RNR_SENT,
+};
+
+#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, \
+ 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, \
+ 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, \
+ L2CAP_DEFAULT_ACK_TO);
+#define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
+
+static inline int l2cap_tx_window_full(struct l2cap_chan *ch)
{
- struct l2cap_pinfo *pi = l2cap_pi(sk);
int sub;
- sub = (pi->next_tx_seq - pi->expected_ack_seq) % 64;
+ sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64;
if (sub < 0)
sub += 64;
- return sub == pi->remote_tx_win;
+ return sub == ch->remote_tx_win;
}
#define __get_txseq(ctrl) (((ctrl) & L2CAP_CTRL_TXSEQ) >> 1)
@@ -446,34 +497,21 @@ static inline int l2cap_tx_window_full(struct sock *sk)
#define __is_sar_start(ctrl) (((ctrl) & L2CAP_CTRL_SAR) == L2CAP_SDU_START)
extern int disable_ertm;
-extern const struct proto_ops l2cap_sock_ops;
-extern struct bt_sock_list l2cap_sk_list;
int l2cap_init_sockets(void);
void l2cap_cleanup_sockets(void);
-u8 l2cap_get_ident(struct l2cap_conn *conn);
-void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len, void *data);
-int l2cap_build_conf_req(struct sock *sk, void *data);
+void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
int __l2cap_wait_ack(struct sock *sk);
-struct sk_buff *l2cap_create_connless_pdu(struct sock *sk, struct msghdr *msg, size_t len);
-struct sk_buff *l2cap_create_basic_pdu(struct sock *sk, struct msghdr *msg, size_t len);
-struct sk_buff *l2cap_create_iframe_pdu(struct sock *sk, struct msghdr *msg, size_t len, u16 control, u16 sdulen);
-int l2cap_sar_segment_sdu(struct sock *sk, struct msghdr *msg, size_t len);
-void l2cap_do_send(struct sock *sk, struct sk_buff *skb);
-void l2cap_streaming_send(struct sock *sk);
-int l2cap_ertm_send(struct sock *sk);
-
-void l2cap_sock_set_timer(struct sock *sk, long timeout);
-void l2cap_sock_clear_timer(struct sock *sk);
-void __l2cap_sock_close(struct sock *sk, int reason);
-void l2cap_sock_kill(struct sock *sk);
-void l2cap_sock_init(struct sock *sk, struct sock *parent);
-struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock,
- int proto, gfp_t prio);
-void l2cap_send_disconn_req(struct l2cap_conn *conn, struct sock *sk, int err);
-void l2cap_chan_del(struct sock *sk, int err);
-int l2cap_do_connect(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);
+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);
+int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len);
+void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
#endif /* __L2CAP_H */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-03-30 12:18:13 +0000