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Diffstat (limited to 'net/bluetooth/hci_conn.c')
-rw-r--r--net/bluetooth/hci_conn.c85
1 files changed, 56 insertions, 29 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 7a879290dd28..111f0e37b672 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -149,8 +149,6 @@ static void hci_conn_cleanup(struct hci_conn *conn)
hci_chan_list_flush(conn);
- hci_conn_hash_del(hdev, conn);
-
if (HCI_CONN_HANDLE_UNSET(conn->handle))
ida_free(&hdev->unset_handle_ida, conn->handle);
@@ -926,10 +924,9 @@ static struct hci_conn *__hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t
case CIS_LINK:
case BIS_LINK:
case PA_LINK:
- if (hdev->iso_mtu)
- /* Dedicated ISO Buffer exists */
- break;
- fallthrough;
+ if (!hdev->iso_mtu)
+ return ERR_PTR(-ECONNREFUSED);
+ break;
case LE_LINK:
if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU)
return ERR_PTR(-ECONNREFUSED);
@@ -1152,28 +1149,54 @@ void hci_conn_del(struct hci_conn *conn)
disable_delayed_work_sync(&conn->auto_accept_work);
disable_delayed_work_sync(&conn->idle_work);
- if (conn->type == ACL_LINK) {
- /* Unacked frames */
- hdev->acl_cnt += conn->sent;
- } else if (conn->type == LE_LINK) {
- cancel_delayed_work(&conn->le_conn_timeout);
+ /* Remove the connection from the list so unacked logic can detect when
+ * a certain pool is not being utilized.
+ */
+ hci_conn_hash_del(hdev, conn);
- if (hdev->le_pkts)
- hdev->le_cnt += conn->sent;
+ /* Handle unacked frames:
+ *
+ * - In case there are no connection, or if restoring the buffers
+ * considered in transist would overflow, restore all buffers to the
+ * pool.
+ * - Otherwise restore just the buffers considered in transit for the
+ * hci_conn
+ */
+ switch (conn->type) {
+ case ACL_LINK:
+ if (!hci_conn_num(hdev, ACL_LINK) ||
+ hdev->acl_cnt + conn->sent > hdev->acl_pkts)
+ hdev->acl_cnt = hdev->acl_pkts;
else
hdev->acl_cnt += conn->sent;
- } else {
- /* Unacked ISO frames */
- if (conn->type == CIS_LINK ||
- conn->type == BIS_LINK ||
- conn->type == PA_LINK) {
- if (hdev->iso_pkts)
- hdev->iso_cnt += conn->sent;
- else if (hdev->le_pkts)
+ break;
+ case LE_LINK:
+ cancel_delayed_work(&conn->le_conn_timeout);
+
+ if (hdev->le_pkts) {
+ if (!hci_conn_num(hdev, LE_LINK) ||
+ hdev->le_cnt + conn->sent > hdev->le_pkts)
+ hdev->le_cnt = hdev->le_pkts;
+ else
hdev->le_cnt += conn->sent;
+ } else {
+ if ((!hci_conn_num(hdev, LE_LINK) &&
+ !hci_conn_num(hdev, ACL_LINK)) ||
+ hdev->acl_cnt + conn->sent > hdev->acl_pkts)
+ hdev->acl_cnt = hdev->acl_pkts;
else
hdev->acl_cnt += conn->sent;
}
+ break;
+ case CIS_LINK:
+ case BIS_LINK:
+ case PA_LINK:
+ if (!hci_iso_count(hdev) ||
+ hdev->iso_cnt + conn->sent > hdev->iso_pkts)
+ hdev->iso_cnt = hdev->iso_pkts;
+ else
+ hdev->iso_cnt += conn->sent;
+ break;
}
skb_queue_purge(&conn->data_q);
@@ -1516,7 +1539,7 @@ static int qos_set_bis(struct hci_dev *hdev, struct bt_iso_qos *qos)
/* This function requires the caller holds hdev->lock */
static struct hci_conn *hci_add_bis(struct hci_dev *hdev, bdaddr_t *dst,
__u8 sid, struct bt_iso_qos *qos,
- __u8 base_len, __u8 *base)
+ __u8 base_len, __u8 *base, u16 timeout)
{
struct hci_conn *conn;
int err;
@@ -1558,6 +1581,7 @@ static struct hci_conn *hci_add_bis(struct hci_dev *hdev, bdaddr_t *dst,
conn->state = BT_CONNECT;
conn->sid = sid;
+ conn->conn_timeout = timeout;
hci_conn_hold(conn);
return conn;
@@ -1898,7 +1922,8 @@ done:
}
struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
- __u8 dst_type, struct bt_iso_qos *qos)
+ __u8 dst_type, struct bt_iso_qos *qos,
+ u16 timeout)
{
struct hci_conn *cis;
@@ -1913,6 +1938,7 @@ struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
cis->dst_type = dst_type;
cis->iso_qos.ucast.cig = BT_ISO_QOS_CIG_UNSET;
cis->iso_qos.ucast.cis = BT_ISO_QOS_CIS_UNSET;
+ cis->conn_timeout = timeout;
}
if (cis->state == BT_CONNECTED)
@@ -2152,7 +2178,7 @@ static void create_big_complete(struct hci_dev *hdev, void *data, int err)
struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst, __u8 sid,
struct bt_iso_qos *qos,
- __u8 base_len, __u8 *base)
+ __u8 base_len, __u8 *base, u16 timeout)
{
struct hci_conn *conn;
struct hci_conn *parent;
@@ -2173,7 +2199,7 @@ struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst, __u8 sid,
base, base_len);
/* We need hci_conn object using the BDADDR_ANY as dst */
- conn = hci_add_bis(hdev, dst, sid, qos, base_len, eir);
+ conn = hci_add_bis(hdev, dst, sid, qos, base_len, eir, timeout);
if (IS_ERR(conn))
return conn;
@@ -2226,13 +2252,13 @@ static void bis_mark_per_adv(struct hci_conn *conn, void *data)
struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
__u8 dst_type, __u8 sid,
struct bt_iso_qos *qos,
- __u8 base_len, __u8 *base)
+ __u8 base_len, __u8 *base, u16 timeout)
{
struct hci_conn *conn;
int err;
struct iso_list_data data;
- conn = hci_bind_bis(hdev, dst, sid, qos, base_len, base);
+ conn = hci_bind_bis(hdev, dst, sid, qos, base_len, base, timeout);
if (IS_ERR(conn))
return conn;
@@ -2275,7 +2301,8 @@ struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
}
struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
- __u8 dst_type, struct bt_iso_qos *qos)
+ __u8 dst_type, struct bt_iso_qos *qos,
+ u16 timeout)
{
struct hci_conn *le;
struct hci_conn *cis;
@@ -2299,7 +2326,7 @@ struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
hci_iso_qos_setup(hdev, le, &qos->ucast.in,
le->le_rx_phy ? le->le_rx_phy : hdev->le_rx_def_phys);
- cis = hci_bind_cis(hdev, dst, dst_type, qos);
+ cis = hci_bind_cis(hdev, dst, dst_type, qos, timeout);
if (IS_ERR(cis)) {
hci_conn_drop(le);
return cis;
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-03 12:00:24 +0000