* [1/2] Bluetooth: ISO: Add hcon for listening bis sk
2024-02-23 13:14 [0/2] Bluetooth: ISO: Reassemble PA data for bcast sink Iulia Tanasescu
@ 2024-02-23 13:14 ` Iulia Tanasescu
2024-02-23 13:57 ` Bluetooth: ISO: Reassemble PA data for bcast sink bluez.test.bot
2024-02-23 13:14 ` [2/2] " Iulia Tanasescu
2024-02-26 19:30 ` [0/2] " patchwork-bot+bluetooth
2 siblings, 1 reply; 5+ messages in thread
From: Iulia Tanasescu @ 2024-02-23 13:14 UTC (permalink / raw)
To: linux-bluetooth
Cc: claudia.rosu, mihai-octavian.urzica, silviu.barbulescu,
vlad.pruteanu, andrei.istodorescu, luiz.dentz, Iulia Tanasescu
This creates a hcon instance at bis listen, before the PA sync
procedure is started.
Signed-off-by: Iulia Tanasescu <iulia.tanasescu@nxp.com>
---
include/net/bluetooth/hci_core.h | 6 ++---
net/bluetooth/hci_conn.c | 32 ++++++++++++++++++++-----
net/bluetooth/iso.c | 41 ++++++++++++++++++++++++--------
3 files changed, 60 insertions(+), 19 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 317d495cfcf5..199a9f81cf50 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1,7 +1,7 @@
/*
BlueZ - Bluetooth protocol stack for Linux
Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
- Copyright 2023 NXP
+ Copyright 2023-2024 NXP
Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
@@ -1528,8 +1528,8 @@ struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
__u8 dst_type, struct bt_iso_qos *qos,
__u8 data_len, __u8 *data);
-int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
- __u8 sid, struct bt_iso_qos *qos);
+struct hci_conn *hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst,
+ __u8 dst_type, __u8 sid, struct bt_iso_qos *qos);
int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
struct bt_iso_qos *qos,
__u16 sync_handle, __u8 num_bis, __u8 bis[]);
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 1acc75a49bb0..193ef947ca47 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1,7 +1,7 @@
/*
BlueZ - Bluetooth protocol stack for Linux
Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
- Copyright 2023 NXP
+ Copyright 2023-2024 NXP
Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
@@ -2057,18 +2057,31 @@ static int create_pa_sync(struct hci_dev *hdev, void *data)
return hci_update_passive_scan_sync(hdev);
}
-int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
- __u8 sid, struct bt_iso_qos *qos)
+struct hci_conn *hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst,
+ __u8 dst_type, __u8 sid,
+ struct bt_iso_qos *qos)
{
struct hci_cp_le_pa_create_sync *cp;
+ struct hci_conn *conn;
+ int err;
if (hci_dev_test_and_set_flag(hdev, HCI_PA_SYNC))
- return -EBUSY;
+ return ERR_PTR(-EBUSY);
+
+ conn = hci_conn_add_unset(hdev, ISO_LINK, dst, HCI_ROLE_SLAVE);
+ if (!conn)
+ return ERR_PTR(-ENOMEM);
+
+ conn->iso_qos = *qos;
+ conn->state = BT_LISTEN;
+
+ hci_conn_hold(conn);
cp = kzalloc(sizeof(*cp), GFP_KERNEL);
if (!cp) {
hci_dev_clear_flag(hdev, HCI_PA_SYNC);
- return -ENOMEM;
+ hci_conn_drop(conn);
+ return ERR_PTR(-ENOMEM);
}
cp->options = qos->bcast.options;
@@ -2080,7 +2093,14 @@ int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
cp->sync_cte_type = qos->bcast.sync_cte_type;
/* Queue start pa_create_sync and scan */
- return hci_cmd_sync_queue(hdev, create_pa_sync, cp, create_pa_complete);
+ err = hci_cmd_sync_queue(hdev, create_pa_sync, cp, create_pa_complete);
+ if (err < 0) {
+ hci_conn_drop(conn);
+ kfree(cp);
+ return ERR_PTR(err);
+ }
+
+ return conn;
}
int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index 04f6572d35f1..d9ee69fa1384 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -3,7 +3,7 @@
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2022 Intel Corporation
- * Copyright 2023 NXP
+ * Copyright 2023-2024 NXP
*/
#include <linux/module.h>
@@ -690,11 +690,8 @@ static void iso_sock_cleanup_listen(struct sock *parent)
iso_sock_kill(sk);
}
- /* If listening socket stands for a PA sync connection,
- * properly disconnect the hcon and socket.
- */
- if (iso_pi(parent)->conn && iso_pi(parent)->conn->hcon &&
- test_bit(HCI_CONN_PA_SYNC, &iso_pi(parent)->conn->hcon->flags)) {
+ /* If listening socket has a hcon, properly disconnect it */
+ if (iso_pi(parent)->conn && iso_pi(parent)->conn->hcon) {
iso_sock_disconn(parent);
return;
}
@@ -1076,6 +1073,8 @@ static int iso_listen_bis(struct sock *sk)
{
struct hci_dev *hdev;
int err = 0;
+ struct iso_conn *conn;
+ struct hci_conn *hcon;
BT_DBG("%pMR -> %pMR (SID 0x%2.2x)", &iso_pi(sk)->src,
&iso_pi(sk)->dst, iso_pi(sk)->bc_sid);
@@ -1096,18 +1095,40 @@ static int iso_listen_bis(struct sock *sk)
if (!hdev)
return -EHOSTUNREACH;
+ hci_dev_lock(hdev);
+
/* Fail if user set invalid QoS */
if (iso_pi(sk)->qos_user_set && !check_bcast_qos(&iso_pi(sk)->qos)) {
iso_pi(sk)->qos = default_qos;
- return -EINVAL;
+ err = -EINVAL;
+ goto unlock;
}
- err = hci_pa_create_sync(hdev, &iso_pi(sk)->dst,
- le_addr_type(iso_pi(sk)->dst_type),
- iso_pi(sk)->bc_sid, &iso_pi(sk)->qos);
+ hcon = hci_pa_create_sync(hdev, &iso_pi(sk)->dst,
+ le_addr_type(iso_pi(sk)->dst_type),
+ iso_pi(sk)->bc_sid, &iso_pi(sk)->qos);
+ if (IS_ERR(hcon)) {
+ err = PTR_ERR(hcon);
+ goto unlock;
+ }
+
+ conn = iso_conn_add(hcon);
+ if (!conn) {
+ hci_conn_drop(hcon);
+ err = -ENOMEM;
+ goto unlock;
+ }
+
+ err = iso_chan_add(conn, sk, NULL);
+ if (err) {
+ hci_conn_drop(hcon);
+ goto unlock;
+ }
hci_dev_put(hdev);
+unlock:
+ hci_dev_unlock(hdev);
return err;
}
--
2.39.2
^ permalink raw reply related [flat|nested] 5+ messages in thread* [2/2] Bluetooth: ISO: Reassemble PA data for bcast sink
2024-02-23 13:14 [0/2] Bluetooth: ISO: Reassemble PA data for bcast sink Iulia Tanasescu
2024-02-23 13:14 ` [1/2] Bluetooth: ISO: Add hcon for listening bis sk Iulia Tanasescu
@ 2024-02-23 13:14 ` Iulia Tanasescu
2024-02-26 19:30 ` [0/2] " patchwork-bot+bluetooth
2 siblings, 0 replies; 5+ messages in thread
From: Iulia Tanasescu @ 2024-02-23 13:14 UTC (permalink / raw)
To: linux-bluetooth
Cc: claudia.rosu, mihai-octavian.urzica, silviu.barbulescu,
vlad.pruteanu, andrei.istodorescu, luiz.dentz, Iulia Tanasescu
This adds support to reassemble PA data for a Broadcast Sink
listening socket. This is needed in case the BASE is received
fragmented in multiple PA reports.
PA data is first reassembled inside the hcon, before the BASE
is extracted and stored inside the socket. The length of the
le_per_adv_data hcon array has been raised to 1650, to accommodate
the maximum PA data length that can come fragmented, according to
spec.
Signed-off-by: Iulia Tanasescu <iulia.tanasescu@nxp.com>
---
include/net/bluetooth/hci.h | 5 ++++
include/net/bluetooth/hci_core.h | 5 ++--
net/bluetooth/iso.c | 50 +++++++++++++++++++++++++++++---
3 files changed, 54 insertions(+), 6 deletions(-)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 08cb5cb249a4..21099bd3c8bc 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -2037,6 +2037,7 @@ struct hci_cp_le_set_per_adv_params {
} __packed;
#define HCI_MAX_PER_AD_LENGTH 252
+#define HCI_MAX_PER_AD_TOT_LEN 1650
#define HCI_OP_LE_SET_PER_ADV_DATA 0x203f
struct hci_cp_le_set_per_adv_data {
@@ -2797,6 +2798,10 @@ struct hci_ev_le_per_adv_report {
__u8 data[];
} __packed;
+#define LE_PA_DATA_COMPLETE 0x00
+#define LE_PA_DATA_MORE_TO_COME 0x01
+#define LE_PA_DATA_TRUNCATED 0x02
+
#define HCI_EV_LE_EXT_ADV_SET_TERM 0x12
struct hci_evt_le_ext_adv_set_term {
__u8 status;
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 199a9f81cf50..da6aa6549b81 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -734,8 +734,9 @@ struct hci_conn {
__u16 le_supv_timeout;
__u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH];
__u8 le_adv_data_len;
- __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
- __u8 le_per_adv_data_len;
+ __u8 le_per_adv_data[HCI_MAX_PER_AD_TOT_LEN];
+ __u16 le_per_adv_data_len;
+ __u16 le_per_adv_data_offset;
__u8 le_tx_phy;
__u8 le_rx_phy;
__s8 rssi;
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index d9ee69fa1384..30c777c469f9 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -1982,16 +1982,58 @@ int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags)
ev3 = hci_recv_event_data(hdev, HCI_EV_LE_PER_ADV_REPORT);
if (ev3) {
- size_t base_len = ev3->length;
+ size_t base_len = 0;
u8 *base;
+ struct hci_conn *hcon;
sk = iso_get_sock_listen(&hdev->bdaddr, bdaddr,
iso_match_sync_handle_pa_report, ev3);
- base = eir_get_service_data(ev3->data, ev3->length,
- EIR_BAA_SERVICE_UUID, &base_len);
- if (base && sk && base_len <= sizeof(iso_pi(sk)->base)) {
+ if (!sk)
+ goto done;
+
+ hcon = iso_pi(sk)->conn->hcon;
+ if (!hcon)
+ goto done;
+
+ if (ev3->data_status == LE_PA_DATA_TRUNCATED) {
+ /* The controller was unable to retrieve PA data. */
+ memset(hcon->le_per_adv_data, 0,
+ HCI_MAX_PER_AD_TOT_LEN);
+ hcon->le_per_adv_data_len = 0;
+ hcon->le_per_adv_data_offset = 0;
+ goto done;
+ }
+
+ if (hcon->le_per_adv_data_offset + ev3->length >
+ HCI_MAX_PER_AD_TOT_LEN)
+ goto done;
+
+ memcpy(hcon->le_per_adv_data + hcon->le_per_adv_data_offset,
+ ev3->data, ev3->length);
+ hcon->le_per_adv_data_offset += ev3->length;
+
+ if (ev3->data_status == LE_PA_DATA_COMPLETE) {
+ /* All PA data has been received. */
+ hcon->le_per_adv_data_len =
+ hcon->le_per_adv_data_offset;
+ hcon->le_per_adv_data_offset = 0;
+
+ /* Extract BASE */
+ base = eir_get_service_data(hcon->le_per_adv_data,
+ hcon->le_per_adv_data_len,
+ EIR_BAA_SERVICE_UUID,
+ &base_len);
+
+ if (!base || base_len > BASE_MAX_LENGTH)
+ goto done;
+
memcpy(iso_pi(sk)->base, base, base_len);
iso_pi(sk)->base_len = base_len;
+ } else {
+ /* This is a PA data fragment. Keep pa_data_len set to 0
+ * until all data has been reassembled.
+ */
+ hcon->le_per_adv_data_len = 0;
}
} else {
sk = iso_get_sock_listen(&hdev->bdaddr, BDADDR_ANY, NULL, NULL);
--
2.39.2
^ permalink raw reply related [flat|nested] 5+ messages in thread