[RFC -v2 07/16] Bluetooth: duplicate DEFER_SETUP flag on l2cap_chan

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From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>

Now l2cap_chan also has the DEFER_SETUP flag, so we don't need to access
the bt_sk(sk) to read this flag inside l2cap_core.c. We need to kep it
duplicate since it is used in Bluetooth socket code as well.

Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
---
 include/net/bluetooth/l2cap.h |  1 +
 net/bluetooth/l2cap_core.c    | 16 +++++++---------
 net/bluetooth/l2cap_sock.c    |  7 +++++--
 3 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 4f28a8c..0c76c55 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -635,6 +635,7 @@ enum {
 	CONN_REJ_ACT,
 	CONN_SEND_FBIT,
 	CONN_RNR_SENT,
+	CONN_DEFER_SETUP,
 };
 
 /* Definitions for flags in l2cap_chan */
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index af8783a..4cc49f3 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -620,10 +620,8 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err)
 void l2cap_chan_close(struct l2cap_chan *chan, int reason)
 {
 	struct l2cap_conn *conn = chan->conn;
-	struct sock *sk = chan->sk;
 
-	BT_DBG("chan %p state %s sk %p", chan, state_to_string(chan->state),
-	       sk);
+	BT_DBG("chan %p state %s", chan, state_to_string(chan->state));
 
 	switch (chan->state) {
 	case BT_LISTEN:
@@ -646,7 +644,7 @@ void l2cap_chan_close(struct l2cap_chan *chan, int reason)
 			struct l2cap_conn_rsp rsp;
 			__u16 result;
 
-			if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))
+			if (test_bit(CONN_DEFER_SETUP, &chan->conn_state))
 				result = L2CAP_CR_SEC_BLOCK;
 			else
 				result = L2CAP_CR_BAD_PSM;
@@ -1255,8 +1253,8 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
 
 			if (l2cap_chan_check_security(chan)) {
 				lock_sock(sk);
-				if (test_bit(BT_SK_DEFER_SETUP,
-					     &bt_sk(sk)->flags)) {
+				if (test_bit(CONN_DEFER_SETUP,
+					     &chan->conn_state)) {
 					rsp.result = __constant_cpu_to_le16(L2CAP_CR_PEND);
 					rsp.status = __constant_cpu_to_le16(L2CAP_CS_AUTHOR_PEND);
 					chan->ops->defer(chan);
@@ -3642,7 +3640,7 @@ static struct l2cap_chan *l2cap_connect(struct l2cap_conn *conn,
 
 	if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE) {
 		if (l2cap_chan_check_security(chan)) {
-			if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
+			if (test_bit(CONN_DEFER_SETUP, &chan->conn_state)) {
 				__l2cap_state_change(chan, BT_CONNECT2);
 				result = L2CAP_CR_PEND;
 				status = L2CAP_CS_AUTHOR_PEND;
@@ -6402,8 +6400,8 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
 			lock_sock(sk);
 
 			if (!status) {
-				if (test_bit(BT_SK_DEFER_SETUP,
-					     &bt_sk(sk)->flags)) {
+				if (test_bit(CONN_DEFER_SETUP,
+					     &chan->conn_state)) {
 					res = L2CAP_CR_PEND;
 					stat = L2CAP_CS_AUTHOR_PEND;
 					chan->ops->defer(chan);
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 8adea0f..9cd6fba 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -659,10 +659,13 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
 			break;
 		}
 
-		if (opt)
+		if (opt) {
 			set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
-		else
+			set_bit(CONN_DEFER_SETUP, &chan->conn_state);
+		} else {
 			clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
+			clear_bit(CONN_DEFER_SETUP, &chan->conn_state);
+		}
 		break;
 
 	case BT_FLUSHABLE:
-- 
1.8.0.2

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