[ Upstream commit
1d11d70d1f6b23e7d3fc00396c17b90b876162a4 ]
This enables a broadcast sink to be informed if the PA
it has synced with is associated with an encrypted BIG,
by retrieving the socket QoS and checking the encryption
field.
After PA sync has been successfully established and the
first BIGInfo advertising report is received, a new hcon
is added and notified to the ISO layer. The ISO layer
sets the encryption field of the socket and hcon QoS
according to the encryption parameter of the BIGInfo
advertising report event.
After that, the userspace is woken up, and the QoS of the
new PA sync socket can be read, to inspect the encryption
field and follow up accordingly.
Signed-off-by: Iulia Tanasescu <iulia.tanasescu@nxp.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Stable-dep-of:
181a42edddf5 ("Bluetooth: Make handle of hci_conn be unique")
Signed-off-by: Sasha Levin <sashal@kernel.org>
/*
BlueZ - Bluetooth protocol stack for Linux
Copyright (C) 2000-2001 Qualcomm Incorporated
+ Copyright 2023 NXP
Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
#define HCI_TX_POWER_INVALID 127
#define HCI_RSSI_INVALID 127
+#define HCI_SYNC_HANDLE_INVALID 0xffff
+
#define HCI_ROLE_MASTER 0x00
#define HCI_ROLE_SLAVE 0x01
}
static inline struct hci_conn *
-hci_conn_hash_lookup_pa_sync(struct hci_dev *hdev, __u8 big)
+hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big)
{
struct hci_conn_hash *h = &hdev->conn_hash;
struct hci_conn *c;
return NULL;
}
+static inline struct hci_conn *
+hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle)
+{
+ struct hci_conn_hash *h = &hdev->conn_hash;
+ struct hci_conn *c;
+
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(c, &h->list, list) {
+ if (c->type != ISO_LINK ||
+ !test_bit(HCI_CONN_PA_SYNC, &c->flags))
+ continue;
+
+ if (c->sync_handle == sync_handle) {
+ rcu_read_unlock();
+ return c;
+ }
+ }
+ rcu_read_unlock();
+
+ return NULL;
+}
+
static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
__u8 type, __u16 state)
{
conn->rssi = HCI_RSSI_INVALID;
conn->tx_power = HCI_TX_POWER_INVALID;
conn->max_tx_power = HCI_TX_POWER_INVALID;
+ conn->sync_handle = HCI_SYNC_HANDLE_INVALID;
set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
conn->disc_timeout = HCI_DISCONN_TIMEOUT;
struct hci_ev_le_pa_sync_established *ev = data;
int mask = hdev->link_mode;
__u8 flags = 0;
- struct hci_conn *bis;
+ struct hci_conn *pa_sync;
bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
if (!(flags & HCI_PROTO_DEFER))
goto unlock;
- /* Add connection to indicate the PA sync event */
- bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
- HCI_ROLE_SLAVE);
+ if (ev->status) {
+ /* Add connection to indicate the failed PA sync event */
+ pa_sync = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
+ HCI_ROLE_SLAVE);
- if (!bis)
- goto unlock;
+ if (!pa_sync)
+ goto unlock;
- if (ev->status)
- set_bit(HCI_CONN_PA_SYNC_FAILED, &bis->flags);
- else
- set_bit(HCI_CONN_PA_SYNC, &bis->flags);
+ set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags);
- /* Notify connection to iso layer */
- hci_connect_cfm(bis, ev->status);
+ /* Notify iso layer */
+ hci_connect_cfm(pa_sync, ev->status);
+ }
unlock:
hci_dev_unlock(hdev);
hci_dev_lock(hdev);
if (!ev->status) {
- pa_sync = hci_conn_hash_lookup_pa_sync(hdev, ev->handle);
+ pa_sync = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle);
if (pa_sync)
/* Also mark the BIG sync established event on the
* associated PA sync hcon
struct hci_evt_le_big_info_adv_report *ev = data;
int mask = hdev->link_mode;
__u8 flags = 0;
+ struct hci_conn *pa_sync;
bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
hci_dev_lock(hdev);
mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
- if (!(mask & HCI_LM_ACCEPT))
+ if (!(mask & HCI_LM_ACCEPT)) {
hci_le_pa_term_sync(hdev, ev->sync_handle);
+ goto unlock;
+ }
+ if (!(flags & HCI_PROTO_DEFER))
+ goto unlock;
+
+ pa_sync = hci_conn_hash_lookup_pa_sync_handle
+ (hdev,
+ le16_to_cpu(ev->sync_handle));
+
+ if (pa_sync)
+ goto unlock;
+
+ /* Add connection to indicate the PA sync event */
+ pa_sync = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
+ HCI_ROLE_SLAVE);
+
+ if (!pa_sync)
+ goto unlock;
+
+ pa_sync->sync_handle = le16_to_cpu(ev->sync_handle);
+ set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags);
+
+ /* Notify iso layer */
+ hci_connect_cfm(pa_sync, 0x00);
+
+unlock:
hci_dev_unlock(hdev);
}
static bool check_ucast_qos(struct bt_iso_qos *qos);
static bool check_bcast_qos(struct bt_iso_qos *qos);
static bool iso_match_sid(struct sock *sk, void *data);
+static bool iso_match_sync_handle(struct sock *sk, void *data);
static void iso_sock_disconn(struct sock *sk);
/* ---- ISO timers ---- */
test_bit(HCI_CONN_PA_SYNC, &pi->conn->hcon->flags)) {
iso_conn_big_sync(sk);
sk->sk_state = BT_LISTEN;
- set_bit(BT_SK_PA_SYNC, &iso_pi(sk)->flags);
} else {
iso_conn_defer_accept(pi->conn->hcon);
sk->sk_state = BT_CONFIG;
struct sock *sk = conn->sk;
struct hci_ev_le_big_sync_estabilished *ev = NULL;
struct hci_ev_le_pa_sync_established *ev2 = NULL;
+ struct hci_evt_le_big_info_adv_report *ev3 = NULL;
struct hci_conn *hcon;
BT_DBG("conn %p", conn);
parent = iso_get_sock_listen(&hcon->src,
&hcon->dst,
iso_match_big, ev);
- } else if (test_bit(HCI_CONN_PA_SYNC, &hcon->flags) ||
- test_bit(HCI_CONN_PA_SYNC_FAILED, &hcon->flags)) {
+ } else if (test_bit(HCI_CONN_PA_SYNC_FAILED, &hcon->flags)) {
ev2 = hci_recv_event_data(hcon->hdev,
HCI_EV_LE_PA_SYNC_ESTABLISHED);
if (ev2)
parent = iso_get_sock_listen(&hcon->src,
&hcon->dst,
iso_match_sid, ev2);
+ } else if (test_bit(HCI_CONN_PA_SYNC, &hcon->flags)) {
+ ev3 = hci_recv_event_data(hcon->hdev,
+ HCI_EVT_LE_BIG_INFO_ADV_REPORT);
+ if (ev3)
+ parent = iso_get_sock_listen(&hcon->src,
+ &hcon->dst,
+ iso_match_sync_handle, ev3);
}
if (!parent)
hcon->sync_handle = iso_pi(parent)->sync_handle;
}
- if (ev2 && !ev2->status) {
- iso_pi(sk)->sync_handle = iso_pi(parent)->sync_handle;
+ if (ev3) {
iso_pi(sk)->qos = iso_pi(parent)->qos;
+ iso_pi(sk)->qos.bcast.encryption = ev3->encryption;
+ hcon->iso_qos = iso_pi(sk)->qos;
iso_pi(sk)->bc_num_bis = iso_pi(parent)->bc_num_bis;
memcpy(iso_pi(sk)->bc_bis, iso_pi(parent)->bc_bis, ISO_MAX_NUM_BIS);
+ set_bit(BT_SK_PA_SYNC, &iso_pi(sk)->flags);
}
bacpy(&iso_pi(sk)->dst, &hcon->dst);