Bluetooth: Add definitions and struct members for new ERTM state machine

Adds some missing values for control field parsing, additional data
for the new state machine, and enumerations for states, incoming
packet classification, and state machine events.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 35334a0de070..c988df6f63bf 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -139,6 +139,8 @@ 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 +154,11 @@ 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 +190,8 @@ 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;
@@ -446,6 +452,9 @@ 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 +465,11 @@ 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;
@@ -600,6 +611,44 @@ 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);