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authorGustavo F. Padovan <gustavo@las.ic.unicamp.br>2009-08-20 22:26:03 -0300
committerMarcel Holtmann <marcel@holtmann.org>2009-08-22 15:01:25 -0700
commit8f17154f1f70fcc6faa31ac82164fcf7f0599f38 (patch)
treef210dae590f600720b974d367082c368d03eac86 /include/net
parentfcc203c30d72dde82692f6b761a80e5ca5fdd8fa (diff)
Bluetooth: Add support for L2CAP SREJ exception
When L2CAP loses an I-frame we send a SREJ frame to the transmitter side requesting the lost packet. This patch implement all Recv I-frame events on SREJ_SENT state table except the ones that deal with SendRej (the REJ exception at receiver side is yet not implemented). Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/bluetooth/bluetooth.h1
-rw-r--r--include/net/bluetooth/l2cap.h14
2 files changed, 14 insertions, 1 deletions
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index b8b9a847952..718394e2c01 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -140,6 +140,7 @@ struct bt_skb_cb {
__u8 incoming;
__u8 tx_seq;
__u8 retries;
+ __u8 sar;
};
#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 59b26bf10f3..9f2126a4f6f 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -108,6 +108,7 @@ struct l2cap_conninfo {
#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
@@ -290,6 +291,13 @@ 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;
@@ -318,6 +326,8 @@ struct l2cap_pinfo {
__u8 expected_ack_seq;
__u8 req_seq;
__u8 expected_tx_seq;
+ __u8 buffer_seq;
+ __u8 buffer_seq_srej;
__u8 unacked_frames;
__u8 retry_count;
__u8 num_to_ack;
@@ -338,6 +348,8 @@ struct l2cap_pinfo {
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;
@@ -356,7 +368,7 @@ struct l2cap_pinfo {
#define L2CAP_CONF_MAX_CONF_RSP 2
#define L2CAP_CONN_SAR_SDU 0x01
-#define L2CAP_CONN_UNDER_REJ 0x02
+#define L2CAP_CONN_SREJ_SENT 0x02
#define L2CAP_CONN_WAIT_F 0x04
#define __mod_retrans_timer() mod_timer(&l2cap_pi(sk)->retrans_timer, \