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| author |   Mat Martineau <mathewm@codeaurora.org> | 2012-04-11 10:48:42 -0700 |
|---|---|---|
| committer |   Gustavo Padovan <gustavo@padovan.org> | 2012-05-09 01:40:30 -0300 |
| commit | 3c588192b5e5328cdfc8e299c55477004d397208 (patch) | |
| tree | 1bedbf322a6b1ded901dc00724e5f8c290098997 /include/net/bluetooth/l2cap.h | |
| parent | Bluetooth: Remove err parameter from alloc_skb() (diff) | |
| download | linux-dev-3c588192b5e5328cdfc8e299c55477004d397208.tar.xz linux-dev-3c588192b5e5328cdfc8e299c55477004d397208.zip | |
Bluetooth: Add the l2cap_seq_list structure for tracking frames
A sequence list is a data structure used to track frames that need to
be retransmitted, and frames that have been requested for
retransmission by the remote device. It can compactly represent a
list of sequence numbers within the ERTM transmit window. Memory for
the list is allocated once at connection time, and common operations
in ERTM are O(1).
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'include/net/bluetooth/l2cap.h')
| -rw-r--r-- | include/net/bluetooth/l2cap.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h index a756c2406306..e33165476e83 100644 --- a/include/net/bluetooth/l2cap.h +++ b/include/net/bluetooth/l2cap.h @@ -407,6 +407,16 @@ 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; @@ -501,6 +511,8 @@ 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; |