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From: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
To: linux-bluetooth@vger.kernel.org
Subject: [PATCH v3] Bluetooth: hci_conn: Always use sk_timeo as conn_timeout
Date: Thu,  8 Feb 2024 09:02:40 -0500
Message-ID: <20240208140240.3249372-1-luiz.dentz@gmail.com>
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From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

This aligns the use socket sk_timeo as conn_timeout when initiating a
connection and then use it when scheduling the resulting HCI command,
that way the command is actually aborted synchronously thus not
blocking commands generated by hci_abort_conn_sync to inform the
controller the connection is to be aborted.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---
 include/net/bluetooth/hci_core.h |  5 +++--
 include/net/bluetooth/l2cap.h    |  2 +-
 net/bluetooth/6lowpan.c          |  2 +-
 net/bluetooth/hci_conn.c         |  8 +++++---
 net/bluetooth/hci_sync.c         |  2 +-
 net/bluetooth/l2cap_core.c       | 10 ++++------
 net/bluetooth/l2cap_sock.c       |  3 ++-
 net/bluetooth/mgmt.c             |  3 ++-
 net/bluetooth/sco.c              |  3 ++-
 9 files changed, 21 insertions(+), 17 deletions(-)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 34aa9d0290fe..2bdea85b7c44 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1495,9 +1495,10 @@ struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 				u16 conn_timeout, u8 role);
 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
 				 u8 sec_level, u8 auth_type,
-				 enum conn_reasons conn_reason);
+				 enum conn_reasons conn_reason, u16 timeout);
 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
-				 __u16 setting, struct bt_codec *codec);
+				 __u16 setting, struct bt_codec *codec,
+				 u16 timeout);
 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
 			      __u8 dst_type, struct bt_iso_qos *qos);
 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst,
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 92d7197f9a56..a4278aa618ab 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -939,7 +939,7 @@ int l2cap_add_scid(struct l2cap_chan *chan,  __u16 scid);
 struct l2cap_chan *l2cap_chan_create(void);
 void l2cap_chan_close(struct l2cap_chan *chan, int reason);
 int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
-		       bdaddr_t *dst, u8 dst_type);
+		       bdaddr_t *dst, u8 dst_type, u16 timeout);
 int l2cap_chan_reconfigure(struct l2cap_chan *chan, __u16 mtu);
 int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len);
 void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index 4eb1b3ced0d2..715cbafbf663 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -892,7 +892,7 @@ static int bt_6lowpan_connect(bdaddr_t *addr, u8 dst_type)
 	chan->ops = &bt_6lowpan_chan_ops;
 
 	err = l2cap_chan_connect(chan, cpu_to_le16(L2CAP_PSM_IPSP), 0,
-				 addr, dst_type);
+				 addr, dst_type, L2CAP_CONN_TIMEOUT);
 
 	BT_DBG("chan %p err %d", chan, err);
 	if (err < 0)
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index a4beed8587eb..8164502234c5 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1607,7 +1607,7 @@ struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
 
 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
 				 u8 sec_level, u8 auth_type,
-				 enum conn_reasons conn_reason)
+				 enum conn_reasons conn_reason, u16 timeout)
 {
 	struct hci_conn *acl;
 
@@ -1643,6 +1643,7 @@ struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
 		acl->sec_level = BT_SECURITY_LOW;
 		acl->pending_sec_level = sec_level;
 		acl->auth_type = auth_type;
+		acl->conn_timeout = timeout;
 
 		err = hci_acl_create_connection_sync(hdev, acl);
 		if (err) {
@@ -1683,14 +1684,15 @@ static struct hci_link *hci_conn_link(struct hci_conn *parent,
 }
 
 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
-				 __u16 setting, struct bt_codec *codec)
+				 __u16 setting, struct bt_codec *codec,
+				 u16 timeout)
 {
 	struct hci_conn *acl;
 	struct hci_conn *sco;
 	struct hci_link *link;
 
 	acl = hci_connect_acl(hdev, dst, BT_SECURITY_LOW, HCI_AT_NO_BONDING,
-			      CONN_REASON_SCO_CONNECT);
+			      CONN_REASON_SCO_CONNECT, timeout);
 	if (IS_ERR(acl))
 		return acl;
 
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 617407b81ffe..788a889210d8 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -6548,7 +6548,7 @@ static int __hci_acl_create_connection_sync(struct hci_dev *hdev, void *data)
 	err = __hci_cmd_sync_status_sk(hdev, HCI_OP_CREATE_CONN,
 				       sizeof(cp), &cp,
 				       HCI_EV_CONN_COMPLETE,
-				       HCI_ACL_CONN_TIMEOUT, NULL);
+				       conn->conn_timeout, NULL);
 
 	if (err == -ETIMEDOUT)
 		hci_abort_conn_sync(hdev, conn, HCI_ERROR_LOCAL_HOST_TERM);
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index ab5a9d42fae7..467b242d8be0 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -6925,7 +6925,7 @@ static void l2cap_chan_by_pid(struct l2cap_chan *chan, void *data)
 }
 
 int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
-		       bdaddr_t *dst, u8 dst_type)
+		       bdaddr_t *dst, u8 dst_type, u16 timeout)
 {
 	struct l2cap_conn *conn;
 	struct hci_conn *hcon;
@@ -7018,19 +7018,17 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
 
 		if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
 			hcon = hci_connect_le(hdev, dst, dst_type, false,
-					      chan->sec_level,
-					      HCI_LE_CONN_TIMEOUT,
+					      chan->sec_level, timeout,
 					      HCI_ROLE_SLAVE);
 		else
 			hcon = hci_connect_le_scan(hdev, dst, dst_type,
-						   chan->sec_level,
-						   HCI_LE_CONN_TIMEOUT,
+						   chan->sec_level, timeout,
 						   CONN_REASON_L2CAP_CHAN);
 
 	} else {
 		u8 auth_type = l2cap_get_auth_type(chan);
 		hcon = hci_connect_acl(hdev, dst, chan->sec_level, auth_type,
-				       CONN_REASON_L2CAP_CHAN);
+				       CONN_REASON_L2CAP_CHAN, timeout);
 	}
 
 	if (IS_ERR(hcon)) {
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index ee7a41d6994f..4287aa6cc988 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -254,7 +254,8 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr,
 		chan->mode = L2CAP_MODE_LE_FLOWCTL;
 
 	err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid),
-				 &la.l2_bdaddr, la.l2_bdaddr_type);
+				 &la.l2_bdaddr, la.l2_bdaddr_type,
+				 sk->sk_sndtimeo);
 	if (err)
 		return err;
 
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 064a67157d43..78ab562807d0 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3444,7 +3444,8 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
 
 	if (cp->addr.type == BDADDR_BREDR) {
 		conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level,
-				       auth_type, CONN_REASON_PAIR_DEVICE);
+				       auth_type, CONN_REASON_PAIR_DEVICE,
+				       HCI_ACL_CONN_TIMEOUT);
 	} else {
 		u8 addr_type = le_addr_type(cp->addr.type);
 		struct hci_conn_params *p;
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index c736186aba26..43daf965a01e 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -264,7 +264,8 @@ static int sco_connect(struct sock *sk)
 	}
 
 	hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst,
-			       sco_pi(sk)->setting, &sco_pi(sk)->codec);
+			       sco_pi(sk)->setting, &sco_pi(sk)->codec,
+			       sk->sk_sndtimeo);
 	if (IS_ERR(hcon)) {
 		err = PTR_ERR(hcon);
 		goto unlock;
-- 
2.43.0