From 03f6715d463e6ee3e724ac64a9bedf1ad7d2b9b4 Mon Sep 17 00:00:00 2001 From: Andrei Emeltchenko Date: Tue, 11 Oct 2011 13:37:49 +0300 Subject: [PATCH] Bluetooth: EWS: rewrite handling FINAL (F) bit Handle final (F) bit in L2CAP using information about control field type. Signed-off-by: Andrei Emeltchenko Signed-off-by: Gustavo F. Padovan --- include/net/bluetooth/l2cap.h | 15 +++++++++++++++ net/bluetooth/l2cap_core.c | 20 ++++++++++---------- 2 files changed, 25 insertions(+), 10 deletions(-) diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h index 9444dceaee19..3110c4301e45 100644 --- a/include/net/bluetooth/l2cap.h +++ b/include/net/bluetooth/l2cap.h @@ -612,6 +612,21 @@ static inline __u32 __set_ctrl_super(struct l2cap_chan *chan, __u32 super) 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; +} extern int disable_ertm; int l2cap_init_sockets(void); diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 9262a00bce55..c500d1cb39a3 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -582,7 +582,7 @@ static inline void l2cap_send_sframe(struct l2cap_chan *chan, u16 control) control |= __set_sframe(chan); if (test_and_clear_bit(CONN_SEND_FBIT, &chan->conn_state)) - control |= L2CAP_CTRL_FINAL; + control |= __set_ctrl_final(chan); if (test_and_clear_bit(CONN_SEND_PBIT, &chan->conn_state)) control |= L2CAP_CTRL_POLL; @@ -1315,7 +1315,7 @@ static void l2cap_retransmit_one_frame(struct l2cap_chan *chan, u16 tx_seq) control &= __get_sar_mask(chan); if (test_and_clear_bit(CONN_SEND_FBIT, &chan->conn_state)) - control |= L2CAP_CTRL_FINAL; + control |= __set_ctrl_final(chan); control |= __set_reqseq(chan, chan->buffer_seq); control |= __set_txseq(chan, tx_seq); @@ -1355,7 +1355,7 @@ static int l2cap_ertm_send(struct l2cap_chan *chan) control &= __get_sar_mask(chan); if (test_and_clear_bit(CONN_SEND_FBIT, &chan->conn_state)) - control |= L2CAP_CTRL_FINAL; + control |= __set_ctrl_final(chan); control |= __set_reqseq(chan, chan->buffer_seq); control |= __set_txseq(chan, chan->next_tx_seq); @@ -1428,7 +1428,7 @@ static void l2cap_send_srejtail(struct l2cap_chan *chan) u16 control; control = __set_ctrl_super(chan, L2CAP_SUPER_SREJ); - control |= L2CAP_CTRL_FINAL; + control |= __set_ctrl_final(chan); tail = list_entry((&chan->srej_l)->prev, struct srej_list, list); control |= __set_reqseq(chan, tail->tx_seq); @@ -3407,7 +3407,7 @@ static inline int l2cap_data_channel_iframe(struct l2cap_chan *chan, u16 rx_cont BT_DBG("chan %p len %d tx_seq %d rx_control 0x%4.4x", chan, skb->len, tx_seq, rx_control); - if (L2CAP_CTRL_FINAL & rx_control && + if (__is_ctrl_final(chan, rx_control) && test_bit(CONN_WAIT_F, &chan->conn_state)) { __clear_monitor_timer(chan); if (chan->unacked_frames > 0) @@ -3512,7 +3512,7 @@ expected: return err; } - if (rx_control & L2CAP_CTRL_FINAL) { + if (__is_ctrl_final(chan, rx_control)) { if (!test_and_clear_bit(CONN_REJ_ACT, &chan->conn_state)) l2cap_retransmit_frames(chan); } @@ -3551,7 +3551,7 @@ static inline void l2cap_data_channel_rrframe(struct l2cap_chan *chan, u16 rx_co l2cap_send_i_or_rr_or_rnr(chan); } - } else if (rx_control & L2CAP_CTRL_FINAL) { + } else if (__is_ctrl_final(chan, rx_control)) { clear_bit(CONN_REMOTE_BUSY, &chan->conn_state); if (!test_and_clear_bit(CONN_REJ_ACT, &chan->conn_state)) @@ -3581,7 +3581,7 @@ static inline void l2cap_data_channel_rejframe(struct l2cap_chan *chan, u16 rx_c chan->expected_ack_seq = tx_seq; l2cap_drop_acked_frames(chan); - if (rx_control & L2CAP_CTRL_FINAL) { + if (__is_ctrl_final(chan, rx_control)) { if (!test_and_clear_bit(CONN_REJ_ACT, &chan->conn_state)) l2cap_retransmit_frames(chan); } else { @@ -3612,7 +3612,7 @@ static inline void l2cap_data_channel_srejframe(struct l2cap_chan *chan, u16 rx_ chan->srej_save_reqseq = tx_seq; set_bit(CONN_SREJ_ACT, &chan->conn_state); } - } else if (rx_control & L2CAP_CTRL_FINAL) { + } else if (__is_ctrl_final(chan, rx_control)) { if (test_bit(CONN_SREJ_ACT, &chan->conn_state) && chan->srej_save_reqseq == tx_seq) clear_bit(CONN_SREJ_ACT, &chan->conn_state); @@ -3659,7 +3659,7 @@ static inline int l2cap_data_channel_sframe(struct l2cap_chan *chan, u16 rx_cont { BT_DBG("chan %p rx_control 0x%4.4x len %d", chan, rx_control, skb->len); - if (L2CAP_CTRL_FINAL & rx_control && + if (__is_ctrl_final(chan, rx_control) && test_bit(CONN_WAIT_F, &chan->conn_state)) { __clear_monitor_timer(chan); if (chan->unacked_frames > 0) -- 2.30.2