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Bluetooth: Add initial implementation of CIS connections

Browse Source 
This adds the initial implementation of CIS connections and introduces
the ISO packets/links.

== Central: Set CIG Parameters, create a CIS and Setup Data Path ==

> tools/isotest -s <address>

< HCI Command: LE Extended Create... (0x08|0x0043) plen 26
...
> HCI Event: Command Status (0x0f) plen 4
      LE Extended Create Connection (0x08|0x0043) ncmd 1
        Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 31
      LE Enhanced Connection Complete (0x0a)
      ...
< HCI Command: LE Create Connected... (0x08|0x0064) plen 5
...
> HCI Event: Command Status (0x0f) plen 4
      LE Create Connected Isochronous Stream (0x08|0x0064) ncmd 1
        Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 29
      LE Connected Isochronous Stream Established (0x19)
      ...
< HCI Command: LE Setup Isochronou.. (0x08|0x006e) plen 13
...
> HCI Event: Command Complete (0x0e) plen 6
      LE Setup Isochronous Data Path (0x08|0x006e) ncmd 1
        Status: Success (0x00)
        Handle: 257
< HCI Command: LE Setup Isochronou.. (0x08|0x006e) plen 13
...
> HCI Event: Command Complete (0x0e) plen 6
      LE Setup Isochronous Data Path (0x08|0x006e) ncmd 1
        Status: Success (0x00)
        Handle: 257

== Peripheral: Accept CIS and Setup Data Path ==

> tools/isotest -d

 HCI Event: LE Meta Event (0x3e) plen 7
      LE Connected Isochronous Stream Request (0x1a)
...
< HCI Command: LE Accept Co.. (0x08|0x0066) plen 2
...
> HCI Event: LE Meta Event (0x3e) plen 29
      LE Connected Isochronous Stream Established (0x19)
...
< HCI Command: LE Setup Is.. (0x08|0x006e) plen 13
...
> HCI Event: Command Complete (0x0e) plen 6
      LE Setup Isochronous Data Path (0x08|0x006e) ncmd 1
        Status: Success (0x00)
        Handle: 257
< HCI Command: LE Setup Is.. (0x08|0x006e) plen 13
...
> HCI Event: Command Complete (0x0e) plen 6
      LE Setup Isochronous Data Path (0x08|0x006e) ncmd 1
        Status: Success (0x00)
        Handle: 257

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Luiz Augusto von Dentz 2019-07-29 18:15:43 +03:00
parent dfe6d5c3ec
commit 26afbd826e
10 changed files with 1145 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
include/net/bluetooth/bluetooth.h
View File

@ -55,6 +55,8 @@
#define BTPROTO_CMTP 5
#define BTPROTO_HIDP 6
#define BTPROTO_AVDTP 7
#define BTPROTO_ISO 8
#define BTPROTO_LAST BTPROTO_ISO
#define SOL_HCI 0
#define SOL_L2CAP 6
@ -149,10 +151,39 @@ struct bt_voice {
#define BT_MODE_LE_FLOWCTL 0x03
#define BT_MODE_EXT_FLOWCTL 0x04
#define BT_PKT_STATUS 16
#define BT_PKT_STATUS 16
#define BT_SCM_PKT_STATUS 0x03
#define BT_ISO_QOS 17
#define BT_ISO_QOS_CIG_UNSET 0xff
#define BT_ISO_QOS_CIS_UNSET 0xff
struct bt_iso_io_qos {
__u32 interval;
__u16 latency;
__u16 sdu;
__u8 phy;
__u8 rtn;
};
struct bt_iso_qos {
__u8 cig;
__u8 cis;
__u8 sca;
__u8 packing;
__u8 framing;
struct bt_iso_io_qos in;
struct bt_iso_io_qos out;
};
#define BT_ISO_PHY_1M 0x01
#define BT_ISO_PHY_2M 0x02
#define BT_ISO_PHY_CODED 0x04
#define BT_ISO_PHY_ANY (BT_ISO_PHY_1M | BT_ISO_PHY_2M | \
BT_ISO_PHY_CODED)
#define BT_CODEC 19
struct bt_codec_caps {

28
include/net/bluetooth/hci.h
View File

@ -1989,7 +1989,7 @@ struct hci_rp_le_read_iso_tx_sync {
struct hci_cis_params {
__u8 cis_id;
__le16 c_sdu;
__le16 p_pdu;
__le16 p_sdu;
__u8 c_phy;
__u8 p_phy;
__u8 c_rtn;
@ -2000,7 +2000,7 @@ struct hci_cp_le_set_cig_params {
__u8 cig_id;
__u8 c_interval[3];
__u8 p_interval[3];
__u8 wc_sca;
__u8 sca;
__u8 packing;
__u8 framing;
__le16 c_latency;
@ -2043,6 +2043,30 @@ struct hci_cp_le_reject_cis {
__u8 reason;
} __packed;
#define HCI_OP_LE_SETUP_ISO_PATH 0x206e
struct hci_cp_le_setup_iso_path {
__le16 handle;
__u8 direction;
__u8 path;
__u8 codec;
__le16 codec_cid;
__le16 codec_vid;
__u8 delay[3];
__u8 codec_cfg_len;
__u8 codec_cfg[0];
} __packed;
struct hci_rp_le_setup_iso_path {
__u8 status;
__le16 handle;
} __packed;
#define HCI_OP_LE_SET_HOST_FEATURE 0x2074
struct hci_cp_le_set_host_feature {
__u8 bit_number;
__u8 bit_value;
} __packed;
/* ---- HCI Events ---- */
struct hci_ev_status {
__u8 status;

107
include/net/bluetooth/hci_core.h
View File

@ -126,6 +126,7 @@ struct hci_conn_hash {
unsigned int acl_num;
unsigned int amp_num;
unsigned int sco_num;
unsigned int iso_num;
unsigned int le_num;
unsigned int le_num_peripheral;
};
@ -474,13 +475,16 @@ struct hci_dev {
unsigned int acl_cnt;
unsigned int sco_cnt;
unsigned int le_cnt;
unsigned int iso_cnt;
unsigned int acl_mtu;
unsigned int sco_mtu;
unsigned int le_mtu;
unsigned int iso_mtu;
unsigned int acl_pkts;
unsigned int sco_pkts;
unsigned int le_pkts;
unsigned int iso_pkts;
__u16 block_len;
__u16 block_mtu;
@ -657,6 +661,7 @@ enum conn_reasons {
CONN_REASON_PAIR_DEVICE,
CONN_REASON_L2CAP_CHAN,
CONN_REASON_SCO_CONNECT,
CONN_REASON_ISO_CONNECT,
};
struct hci_conn {
@ -709,6 +714,7 @@ struct hci_conn {
__s8 rssi;
__s8 tx_power;
__s8 max_tx_power;
struct bt_iso_qos iso_qos;
unsigned long flags;
enum conn_reasons conn_reason;
@ -739,6 +745,7 @@ struct hci_conn {
struct hci_dev *hdev;
void *l2cap_data;
void *sco_data;
void *iso_data;
struct amp_mgr *amp_mgr;
struct hci_conn *link;
@ -747,6 +754,8 @@ struct hci_conn {
void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
void (*cleanup)(struct hci_conn *conn);
};
struct hci_chan {
@ -954,6 +963,9 @@ static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
case ESCO_LINK:
h->sco_num++;
break;
case ISO_LINK:
h->iso_num++;
break;
}
}
@ -980,6 +992,9 @@ static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
case ESCO_LINK:
h->sco_num--;
break;
case ISO_LINK:
h->iso_num--;
break;
}
}
@ -996,6 +1011,8 @@ static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
case SCO_LINK:
case ESCO_LINK:
return h->sco_num;
case ISO_LINK:
return h->iso_num;
default:
return 0;
}
@ -1005,7 +1022,7 @@ static inline unsigned int hci_conn_count(struct hci_dev *hdev)
{
struct hci_conn_hash *c = &hdev->conn_hash;
return c->acl_num + c->amp_num + c->sco_num + c->le_num;
return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
}
static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
@ -1091,6 +1108,53 @@ static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
return NULL;
}
static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
bdaddr_t *ba,
__u8 ba_type)
{
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)
continue;
if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
rcu_read_unlock();
return c;
}
}
rcu_read_unlock();
return NULL;
}
static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
__u8 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)
continue;
if (handle == c->iso_qos.cig) {
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)
{
@ -1111,6 +1175,27 @@ static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
return NULL;
}
typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
hci_conn_func_t func, __u8 type,
__u16 state, void *data)
{
struct hci_conn_hash *h = &hdev->conn_hash;
struct hci_conn *c;
if (!func)
return;
rcu_read_lock();
list_for_each_entry_rcu(c, &h->list, list) {
if (c->type == type && c->state == state)
func(c, data);
}
rcu_read_unlock();
}
static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
{
struct hci_conn_hash *h = &hdev->conn_hash;
@ -1134,6 +1219,8 @@ static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
int hci_disconnect(struct hci_conn *conn, __u8 reason);
bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
void hci_sco_setup(struct hci_conn *conn, __u8 status);
bool hci_iso_setup_path(struct hci_conn *conn);
int hci_le_create_cis(struct hci_conn *conn);
struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
u8 role);
@ -1158,6 +1245,10 @@ struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
enum conn_reasons conn_reason);
struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
__u16 setting, struct bt_codec *codec);
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_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
__u8 dst_type, struct bt_iso_qos *qos);
int hci_conn_check_link_mode(struct hci_conn *conn);
int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
@ -1525,6 +1616,15 @@ void hci_conn_del_sysfs(struct hci_conn *conn);
#define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
ext_adv_capable(dev))
/* CIS Master/Slave support */
#define iso_capable(dev) (cis_capable(dev))
#define cis_capable(dev) \
(cis_central_capable(dev) || cis_peripheral_capable(dev))
#define cis_central_capable(dev) \
((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
#define cis_peripheral_capable(dev) \
((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
/* ----- HCI protocols ----- */
#define HCI_PROTO_DEFER 0x01
@ -1539,6 +1639,10 @@ static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
case ESCO_LINK:
return sco_connect_ind(hdev, bdaddr, flags);
case ISO_LINK:
/* TODO: Handle connection indication */
return -EINVAL;
default:
BT_ERR("unknown link type %d", type);
return -EINVAL;
@ -1746,6 +1850,7 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
const void *param);
void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);

2
include/net/bluetooth/hci_sock.h
View File

@ -124,6 +124,8 @@ struct hci_dev_info {
__u16 acl_pkts;
__u16 sco_mtu;
__u16 sco_pkts;
__u16 iso_mtu;
__u16 iso_pkts;
struct hci_dev_stats stat;
};

3
include/net/bluetooth/hci_sync.h
View File

@ -109,3 +109,6 @@ struct hci_conn;
int hci_abort_conn_sync(struct hci_dev *hdev, struct hci_conn *conn, u8 reason);
int hci_le_create_conn_sync(struct hci_dev *hdev, struct hci_conn *conn);
int hci_le_remove_cig_sync(struct hci_dev *hdev, u8 handle);
int hci_le_remove_cig(struct hci_dev *hdev, u8 handle);

1
net/bluetooth/Kconfig
View File

@ -29,6 +29,7 @@ menuconfig BT
SCO audio links
L2CAP (Logical Link Control and Adaptation Protocol)
SMP (Security Manager Protocol) on LE (Low Energy) links
ISO isochronous links
HCI Device drivers (Interface to the hardware)
RFCOMM Module (RFCOMM Protocol)
BNEP Module (Bluetooth Network Encapsulation Protocol)

440
net/bluetooth/hci_conn.c
View File

@ -125,6 +125,9 @@ static void hci_conn_cleanup(struct hci_conn *conn)
hci_conn_hash_del(hdev, conn);
if (conn->cleanup)
conn->cleanup(conn);
if (conn->type == SCO_LINK || conn->type == ESCO_LINK) {
switch (conn->setting & SCO_AIRMODE_MASK) {
case SCO_AIRMODE_CVSD:
@ -722,6 +725,7 @@ struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK;
break;
case LE_LINK:
case ISO_LINK:
/* conn->src should reflect the local identity address */
hci_copy_identity_address(hdev, &conn->src, &conn->src_type);
break;
@ -1232,6 +1236,442 @@ struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
return sco;
}
struct iso_list_data {
u8 cig;
u8 cis;
int count;
struct {
struct hci_cp_le_set_cig_params cp;
struct hci_cis_params cis[0x11];
} pdu;
};
static void cis_add(struct iso_list_data *d, struct bt_iso_qos *qos)
{
struct hci_cis_params *cis = &d->pdu.cis[d->pdu.cp.num_cis];
cis->cis_id = qos->cis;
cis->c_sdu = cpu_to_le16(qos->out.sdu);
cis->p_sdu = cpu_to_le16(qos->in.sdu);
cis->c_phy = qos->out.phy;
cis->p_phy = qos->in.phy;
cis->c_rtn = qos->out.rtn;
cis->p_rtn = qos->in.rtn;
d->pdu.cp.num_cis++;
}
static void cis_list(struct hci_conn *conn, void *data)
{
struct iso_list_data *d = data;
if (d->cig != conn->iso_qos.cig || d->cis == BT_ISO_QOS_CIS_UNSET ||
d->cis != conn->iso_qos.cis)
return;
d->count++;
if (d->pdu.cp.cig_id == BT_ISO_QOS_CIG_UNSET ||
d->count >= ARRAY_SIZE(d->pdu.cis))
return;
cis_add(d, &conn->iso_qos);
}
static bool hci_le_set_cig_params(struct hci_conn *conn, struct bt_iso_qos *qos)
{
struct hci_dev *hdev = conn->hdev;
struct iso_list_data data;
memset(&data, 0, sizeof(data));
/* Allocate a CIG if not set */
if (qos->cig == BT_ISO_QOS_CIG_UNSET) {
for (data.cig = 0x00; data.cig < 0xff; data.cig++) {
data.count = 0;
data.cis = 0xff;
hci_conn_hash_list_state(hdev, cis_list, ISO_LINK,
BT_BOUND, &data);
if (data.count)
continue;
hci_conn_hash_list_state(hdev, cis_list, ISO_LINK,
BT_CONNECTED, &data);
if (!data.count)
break;
}
if (data.cig == 0xff)
return false;
/* Update CIG */
qos->cig = data.cig;
}
data.pdu.cp.cig_id = qos->cig;
hci_cpu_to_le24(qos->out.interval, data.pdu.cp.c_interval);
hci_cpu_to_le24(qos->in.interval, data.pdu.cp.p_interval);
data.pdu.cp.sca = qos->sca;
data.pdu.cp.packing = qos->packing;
data.pdu.cp.framing = qos->framing;
data.pdu.cp.c_latency = cpu_to_le16(qos->out.latency);
data.pdu.cp.p_latency = cpu_to_le16(qos->in.latency);
if (qos->cis != BT_ISO_QOS_CIS_UNSET) {
data.count = 0;
data.cig = qos->cig;
data.cis = qos->cis;
hci_conn_hash_list_state(hdev, cis_list, ISO_LINK, BT_BOUND,
&data);
if (data.count)
return false;
cis_add(&data, qos);
}
/* Reprogram all CIS(s) with the same CIG */
for (data.cig = qos->cig, data.cis = 0x00; data.cis < 0x11;
data.cis++) {
data.count = 0;
hci_conn_hash_list_state(hdev, cis_list, ISO_LINK, BT_BOUND,
&data);
if (data.count)
continue;
/* Allocate a CIS if not set */
if (qos->cis == BT_ISO_QOS_CIS_UNSET) {
/* Update CIS */
qos->cis = data.cis;
cis_add(&data, qos);
}
}
if (qos->cis == BT_ISO_QOS_CIS_UNSET || !data.pdu.cp.num_cis)
return false;
if (hci_send_cmd(hdev, HCI_OP_LE_SET_CIG_PARAMS,
sizeof(data.pdu.cp) +
(data.pdu.cp.num_cis * sizeof(*data.pdu.cis)),
&data.pdu) < 0)
return false;
return true;
}
static void find_cis(struct hci_conn *conn, void *data)
{
struct iso_list_data *d = data;
/* Ignore broadcast */
if (!bacmp(&conn->dst, BDADDR_ANY))
return;
d->count++;
}
static int remove_cig_sync(struct hci_dev *hdev, void *data)
{
u8 handle = PTR_ERR(data);
return hci_le_remove_cig_sync(hdev, handle);
}
int hci_le_remove_cig(struct hci_dev *hdev, u8 handle)
{
bt_dev_dbg(hdev, "handle 0x%2.2x", handle);
return hci_cmd_sync_queue(hdev, remove_cig_sync, ERR_PTR(handle), NULL);
}
static void cis_cleanup(struct hci_conn *conn)
{
struct hci_dev *hdev = conn->hdev;
struct iso_list_data d;
memset(&d, 0, sizeof(d));
d.cig = conn->iso_qos.cig;
/* Check if ISO connection is a CIS and remove CIG if there are
* no other connections using it.
*/
hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, BT_CONNECTED, &d);
if (d.count)
return;
hci_le_remove_cig(hdev, conn->iso_qos.cig);
}
struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
__u8 dst_type, struct bt_iso_qos *qos)
{
struct hci_conn *cis;
cis = hci_conn_hash_lookup_cis(hdev, dst, dst_type);
if (!cis) {
cis = hci_conn_add(hdev, ISO_LINK, dst, HCI_ROLE_MASTER);
if (!cis)
return ERR_PTR(-ENOMEM);
cis->cleanup = cis_cleanup;
}
if (cis->state == BT_CONNECTED)
return cis;
/* Check if CIS has been set and the settings matches */
if (cis->state == BT_BOUND &&
!memcmp(&cis->iso_qos, qos, sizeof(*qos)))
return cis;
/* Update LINK PHYs according to QoS preference */
cis->le_tx_phy = qos->out.phy;
cis->le_rx_phy = qos->in.phy;
/* If output interval is not set use the input interval as it cannot be
* 0x000000.
*/
if (!qos->out.interval)
qos->out.interval = qos->in.interval;
/* If input interval is not set use the output interval as it cannot be
* 0x000000.
*/
if (!qos->in.interval)
qos->in.interval = qos->out.interval;
/* If output latency is not set use the input latency as it cannot be
* 0x0000.
*/
if (!qos->out.latency)
qos->out.latency = qos->in.latency;
/* If input latency is not set use the output latency as it cannot be
* 0x0000.
*/
if (!qos->in.latency)
qos->in.latency = qos->out.latency;
/* Mirror PHYs that are disabled as SDU will be set to 0 */
if (!qos->in.phy)
qos->in.phy = qos->out.phy;
if (!qos->out.phy)
qos->out.phy = qos->in.phy;
if (!hci_le_set_cig_params(cis, qos)) {
hci_conn_drop(cis);
return ERR_PTR(-EINVAL);
}
cis->iso_qos = *qos;
cis->state = BT_BOUND;
return cis;
}
bool hci_iso_setup_path(struct hci_conn *conn)
{
struct hci_dev *hdev = conn->hdev;
struct hci_cp_le_setup_iso_path cmd;
memset(&cmd, 0, sizeof(cmd));
if (conn->iso_qos.out.sdu) {
cmd.handle = cpu_to_le16(conn->handle);
cmd.direction = 0x00; /* Input (Host to Controller) */
cmd.path = 0x00; /* HCI path if enabled */
cmd.codec = 0x03; /* Transparent Data */
if (hci_send_cmd(hdev, HCI_OP_LE_SETUP_ISO_PATH, sizeof(cmd),
&cmd) < 0)
return false;
}
if (conn->iso_qos.in.sdu) {
cmd.handle = cpu_to_le16(conn->handle);
cmd.direction = 0x01; /* Output (Controller to Host) */
cmd.path = 0x00; /* HCI path if enabled */
cmd.codec = 0x03; /* Transparent Data */
if (hci_send_cmd(hdev, HCI_OP_LE_SETUP_ISO_PATH, sizeof(cmd),
&cmd) < 0)
return false;
}
return true;
}
static int hci_create_cis_sync(struct hci_dev *hdev, void *data)
{
struct {
struct hci_cp_le_create_cis cp;
struct hci_cis cis[0x1f];
} cmd;
struct hci_conn *conn = data;
u8 cig;
memset(&cmd, 0, sizeof(cmd));
cmd.cis[0].acl_handle = cpu_to_le16(conn->link->handle);
cmd.cis[0].cis_handle = cpu_to_le16(conn->handle);
cmd.cp.num_cis++;
cig = conn->iso_qos.cig;
hci_dev_lock(hdev);
rcu_read_lock();
list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
struct hci_cis *cis = &cmd.cis[cmd.cp.num_cis];
if (conn == data || conn->type != ISO_LINK ||
conn->state == BT_CONNECTED || conn->iso_qos.cig != cig)
continue;
/* Check if all CIS(s) belonging to a CIG are ready */
if (conn->link->state != BT_CONNECTED ||
conn->state != BT_CONNECT) {
cmd.cp.num_cis = 0;
break;
}
/* Group all CIS with state BT_CONNECT since the spec don't
* allow to send them individually:
*
* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E
* page 2566:
*
* If the Host issues this command before all the
* HCI_LE_CIS_Established events from the previous use of the
* command have been generated, the Controller shall return the
* error code Command Disallowed (0x0C).
*/
cis->acl_handle = cpu_to_le16(conn->link->handle);
cis->cis_handle = cpu_to_le16(conn->handle);
cmd.cp.num_cis++;
}
rcu_read_unlock();
hci_dev_unlock(hdev);
if (!cmd.cp.num_cis)
return 0;
return hci_send_cmd(hdev, HCI_OP_LE_CREATE_CIS, sizeof(cmd.cp) +
sizeof(cmd.cis[0]) * cmd.cp.num_cis, &cmd);
}
int hci_le_create_cis(struct hci_conn *conn)
{
struct hci_conn *cis;
struct hci_dev *hdev = conn->hdev;
int err;
switch (conn->type) {
case LE_LINK:
if (!conn->link || conn->state != BT_CONNECTED)
return -EINVAL;
cis = conn->link;
break;
case ISO_LINK:
cis = conn;
break;
default:
return -EINVAL;
}
if (cis->state == BT_CONNECT)
return 0;
/* Queue Create CIS */
err = hci_cmd_sync_queue(hdev, hci_create_cis_sync, cis, NULL);
if (err)
return err;
cis->state = BT_CONNECT;
return 0;
}
static void hci_iso_qos_setup(struct hci_dev *hdev, struct hci_conn *conn,
struct bt_iso_io_qos *qos, __u8 phy)
{
/* Only set MTU if PHY is enabled */
if (!qos->sdu && qos->phy) {
if (hdev->iso_mtu > 0)
qos->sdu = hdev->iso_mtu;
else if (hdev->le_mtu > 0)
qos->sdu = hdev->le_mtu;
else
qos->sdu = hdev->acl_mtu;
}
/* Use the same PHY as ACL if set to any */
if (qos->phy == BT_ISO_PHY_ANY)
qos->phy = phy;
/* Use LE ACL connection interval if not set */
if (!qos->interval)
/* ACL interval unit in 1.25 ms to us */
qos->interval = conn->le_conn_interval * 1250;
/* Use LE ACL connection latency if not set */
if (!qos->latency)
qos->latency = conn->le_conn_latency;
}
struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
__u8 dst_type, struct bt_iso_qos *qos)
{
struct hci_conn *le;
struct hci_conn *cis;
/* Convert from ISO socket address type to HCI address type */
if (dst_type == BDADDR_LE_PUBLIC)
dst_type = ADDR_LE_DEV_PUBLIC;
else
dst_type = ADDR_LE_DEV_RANDOM;
if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
le = hci_connect_le(hdev, dst, dst_type, false,
BT_SECURITY_LOW,
HCI_LE_CONN_TIMEOUT,
HCI_ROLE_SLAVE);
else
le = hci_connect_le_scan(hdev, dst, dst_type,
BT_SECURITY_LOW,
HCI_LE_CONN_TIMEOUT,
CONN_REASON_ISO_CONNECT);
if (IS_ERR(le))
return le;
hci_iso_qos_setup(hdev, le, &qos->out,
le->le_tx_phy ? le->le_tx_phy : hdev->le_tx_def_phys);
hci_iso_qos_setup(hdev, le, &qos->in,
le->le_rx_phy ? le->le_rx_phy : hdev->le_rx_def_phys);
cis = hci_bind_cis(hdev, dst, dst_type, qos);
if (IS_ERR(cis)) {
hci_conn_drop(le);
return cis;
}
le->link = cis;
cis->link = le;
hci_conn_hold(cis);
/* If LE is already connected and CIS handle is already set proceed to
* Create CIS immediately.
*/
if (le->state == BT_CONNECTED && cis->handle != HCI_CONN_HANDLE_UNSET)
hci_le_create_cis(le);
return cis;
}
/* Check link security requirement */
int hci_conn_check_link_mode(struct hci_conn *conn)
{

230
net/bluetooth/hci_core.c
View File

@ -616,7 +616,10 @@ static int hci_dev_do_reset(struct hci_dev *hdev)
hci_dev_clear_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE);
atomic_set(&hdev->cmd_cnt, 1);
hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0;
hdev->acl_cnt = 0;
hdev->sco_cnt = 0;
hdev->le_cnt = 0;
hdev->iso_cnt = 0;
ret = hci_reset_sync(hdev);
@ -3157,9 +3160,117 @@ void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb)
queue_work(hdev->workqueue, &hdev->tx_work);
}
/* Send ISO data */
static void hci_add_iso_hdr(struct sk_buff *skb, __u16 handle, __u8 flags)
{
struct hci_iso_hdr *hdr;
int len = skb->len;
skb_push(skb, HCI_ISO_HDR_SIZE);
skb_reset_transport_header(skb);
hdr = (struct hci_iso_hdr *)skb_transport_header(skb);
hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags));
hdr->dlen = cpu_to_le16(len);
}
static void hci_queue_iso(struct hci_conn *conn, struct sk_buff_head *queue,
struct sk_buff *skb)
{
struct hci_dev *hdev = conn->hdev;
struct sk_buff *list;
__u16 flags;
skb->len = skb_headlen(skb);
skb->data_len = 0;
hci_skb_pkt_type(skb) = HCI_ISODATA_PKT;
list = skb_shinfo(skb)->frag_list;
flags = hci_iso_flags_pack(list ? ISO_START : ISO_SINGLE, 0x00);
hci_add_iso_hdr(skb, conn->handle, flags);
if (!list) {
/* Non fragmented */
BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len);
skb_queue_tail(queue, skb);
} else {
/* Fragmented */
BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len);
skb_shinfo(skb)->frag_list = NULL;
__skb_queue_tail(queue, skb);
do {
skb = list; list = list->next;
hci_skb_pkt_type(skb) = HCI_ISODATA_PKT;
flags = hci_iso_flags_pack(list ? ISO_CONT : ISO_END,
0x00);
hci_add_iso_hdr(skb, conn->handle, flags);
BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len);
__skb_queue_tail(queue, skb);
} while (list);
}
}
void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb)
{
struct hci_dev *hdev = conn->hdev;
BT_DBG("%s len %d", hdev->name, skb->len);
hci_queue_iso(conn, &conn->data_q, skb);
queue_work(hdev->workqueue, &hdev->tx_work);
}
/* ---- HCI TX task (outgoing data) ---- */
/* HCI Connection scheduler */
static inline void hci_quote_sent(struct hci_conn *conn, int num, int *quote)
{
struct hci_dev *hdev;
int cnt, q;
if (!conn) {
*quote = 0;
return;
}
hdev = conn->hdev;
switch (conn->type) {
case ACL_LINK:
cnt = hdev->acl_cnt;
break;
case AMP_LINK:
cnt = hdev->block_cnt;
break;
case SCO_LINK:
case ESCO_LINK:
cnt = hdev->sco_cnt;
break;
case LE_LINK:
cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt;
break;
case ISO_LINK:
cnt = hdev->iso_mtu ? hdev->iso_cnt :
hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt;
break;
default:
cnt = 0;
bt_dev_err(hdev, "unknown link type %d", conn->type);
}
q = cnt / num;
*quote = q ? q : 1;
}
static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type,
int *quote)
{
@ -3192,29 +3303,7 @@ static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type,
rcu_read_unlock();
if (conn) {
int cnt, q;
switch (conn->type) {
case ACL_LINK:
cnt = hdev->acl_cnt;
break;
case SCO_LINK:
case ESCO_LINK:
cnt = hdev->sco_cnt;
break;
case LE_LINK:
cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt;
break;
default:
cnt = 0;
bt_dev_err(hdev, "unknown link type %d", conn->type);
}
q = cnt / num;
*quote = q ? q : 1;
} else
*quote = 0;
hci_quote_sent(conn, num, quote);
BT_DBG("conn %p quote %d", conn, *quote);
return conn;
@ -3248,7 +3337,7 @@ static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type,
struct hci_chan *chan = NULL;
unsigned int num = 0, min = ~0, cur_prio = 0;
struct hci_conn *conn;
int cnt, q, conn_num = 0;
int conn_num = 0;
BT_DBG("%s", hdev->name);
@ -3298,27 +3387,8 @@ static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type,
if (!chan)
return NULL;
switch (chan->conn->type) {
case ACL_LINK:
cnt = hdev->acl_cnt;
break;
case AMP_LINK:
cnt = hdev->block_cnt;
break;
case SCO_LINK:
case ESCO_LINK:
cnt = hdev->sco_cnt;
break;
case LE_LINK:
cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt;
break;
default:
cnt = 0;
bt_dev_err(hdev, "unknown link type %d", chan->conn->type);
}
hci_quote_sent(chan->conn, num, quote);
q = cnt / num;
*quote = q ? q : 1;
BT_DBG("chan %p quote %d", chan, *quote);
return chan;
}
@ -3607,18 +3677,46 @@ static void hci_sched_le(struct hci_dev *hdev)
hci_prio_recalculate(hdev, LE_LINK);
}
/* Schedule CIS */
static void hci_sched_iso(struct hci_dev *hdev)
{
struct hci_conn *conn;
struct sk_buff *skb;
int quote, *cnt;
BT_DBG("%s", hdev->name);
if (!hci_conn_num(hdev, ISO_LINK))
return;
cnt = hdev->iso_pkts ? &hdev->iso_cnt :
hdev->le_pkts ? &hdev->le_cnt : &hdev->acl_cnt;
while (*cnt && (conn = hci_low_sent(hdev, ISO_LINK, &quote))) {
while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
BT_DBG("skb %p len %d", skb, skb->len);
hci_send_frame(hdev, skb);
conn->sent++;
if (conn->sent == ~0)
conn->sent = 0;
(*cnt)--;
}
}
}
static void hci_tx_work(struct work_struct *work)
{
struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work);
struct sk_buff *skb;
BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt,
hdev->sco_cnt, hdev->le_cnt);
BT_DBG("%s acl %d sco %d le %d iso %d", hdev->name, hdev->acl_cnt,
hdev->sco_cnt, hdev->le_cnt, hdev->iso_cnt);
if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) {
/* Schedule queues and send stuff to HCI driver */
hci_sched_sco(hdev);
hci_sched_esco(hdev);
hci_sched_iso(hdev);
hci_sched_acl(hdev);
hci_sched_le(hdev);
}
@ -3701,6 +3799,39 @@ static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb)
kfree_skb(skb);
}
static void hci_isodata_packet(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_iso_hdr *hdr;
struct hci_conn *conn;
__u16 handle, flags;
hdr = skb_pull_data(skb, sizeof(*hdr));
if (!hdr) {
bt_dev_err(hdev, "ISO packet too small");
goto drop;
}
handle = __le16_to_cpu(hdr->handle);
flags = hci_flags(handle);
handle = hci_handle(handle);
bt_dev_dbg(hdev, "len %d handle 0x%4.4x flags 0x%4.4x", skb->len,
handle, flags);
hci_dev_lock(hdev);
conn = hci_conn_hash_lookup_handle(hdev, handle);
hci_dev_unlock(hdev);
/* TODO: Send to upper protocol */
if (!conn) {
bt_dev_err(hdev, "ISO packet for unknown connection handle %d",
handle);
}
drop:
kfree_skb(skb);
}
static bool hci_req_is_complete(struct hci_dev *hdev)
{
struct sk_buff *skb;
@ -3862,6 +3993,11 @@ static void hci_rx_work(struct work_struct *work)
hci_scodata_packet(hdev, skb);
break;
case HCI_ISODATA_PKT:
BT_DBG("%s ISO data packet", hdev->name);
hci_isodata_packet(hdev, skb);
break;
default:
kfree_skb(skb);
break;

307
net/bluetooth/hci_event.c
View File

@ -3775,6 +3775,124 @@ static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
}
}
static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
struct sk_buff *skb)
{
struct hci_rp_le_read_buffer_size_v2 *rp = data;
bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
if (rp->status)
return rp->status;
hdev->le_mtu = __le16_to_cpu(rp->acl_mtu);
hdev->le_pkts = rp->acl_max_pkt;
hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu);
hdev->iso_pkts = rp->iso_max_pkt;
hdev->le_cnt = hdev->le_pkts;
hdev->iso_cnt = hdev->iso_pkts;
BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
return rp->status;
}
static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
struct sk_buff *skb)
{
struct hci_rp_le_set_cig_params *rp = data;
struct hci_conn *conn;
int i = 0;
bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
hci_dev_lock(hdev);
if (rp->status) {
while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) {
conn->state = BT_CLOSED;
hci_connect_cfm(conn, rp->status);
hci_conn_del(conn);
}
goto unlock;
}
rcu_read_lock();
list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
if (conn->type != ISO_LINK || conn->iso_qos.cig != rp->cig_id ||
conn->state == BT_CONNECTED)
continue;
conn->handle = __le16_to_cpu(rp->handle[i++]);
bt_dev_dbg(hdev, "%p handle 0x%4.4x link %p", conn,
conn->handle, conn->link);
/* Create CIS if LE is already connected */
if (conn->link && conn->link->state == BT_CONNECTED)
hci_le_create_cis(conn->link);
if (i == rp->num_handles)
break;
}
rcu_read_unlock();
unlock:
hci_dev_unlock(hdev);
return rp->status;
}
static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
struct sk_buff *skb)
{
struct hci_rp_le_setup_iso_path *rp = data;
struct hci_cp_le_setup_iso_path *cp;
struct hci_conn *conn;
bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
if (!cp)
return rp->status;
hci_dev_lock(hdev);
conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
if (!conn)
goto unlock;
if (rp->status) {
hci_connect_cfm(conn, rp->status);
hci_conn_del(conn);
goto unlock;
}
switch (cp->direction) {
/* Input (Host to Controller) */
case 0x00:
/* Only confirm connection if output only */
if (conn->iso_qos.out.sdu && !conn->iso_qos.in.sdu)
hci_connect_cfm(conn, rp->status);
break;
/* Output (Controller to Host) */
case 0x01:
/* Confirm connection since conn->iso_qos is always configured
* last.
*/
hci_connect_cfm(conn, rp->status);
break;
}
unlock:
hci_dev_unlock(hdev);
return rp->status;
}
#define HCI_CC_VL(_op, _func, _min, _max) \
{ \
.op = _op, \
@ -3950,7 +4068,13 @@ static const struct hci_cc {
HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
sizeof(struct hci_rp_le_read_transmit_power)),
HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode)
HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
sizeof(struct hci_rp_le_read_buffer_size_v2)),
HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
sizeof(struct hci_rp_le_setup_iso_path)),
};
static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
@ -4013,6 +4137,40 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
queue_work(hdev->workqueue, &hdev->cmd_work);
}
static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
{
struct hci_cp_le_create_cis *cp;
int i;
bt_dev_dbg(hdev, "status 0x%2.2x", status);
if (!status)
return;
cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
if (!cp)
return;
hci_dev_lock(hdev);
/* Remove connection if command failed */
for (i = 0; cp->num_cis; cp->num_cis--, i++) {
struct hci_conn *conn;
u16 handle;
handle = __le16_to_cpu(cp->cis[i].cis_handle);
conn = hci_conn_hash_lookup_handle(hdev, handle);
if (conn) {
conn->state = BT_CLOSED;
hci_connect_cfm(conn, status);
hci_conn_del(conn);
}
}
hci_dev_unlock(hdev);
}
#define HCI_CS(_op, _func) \
{ \
.op = _op, \
@ -4042,7 +4200,8 @@ static const struct hci_cs {
HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn)
HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
};
static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
@ -4178,6 +4337,22 @@ static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
hdev->sco_cnt = hdev->sco_pkts;
break;
case ISO_LINK:
if (hdev->iso_pkts) {
hdev->iso_cnt += count;
if (hdev->iso_cnt > hdev->iso_pkts)
hdev->iso_cnt = hdev->iso_pkts;
} else if (hdev->le_pkts) {
hdev->le_cnt += count;
if (hdev->le_cnt > hdev->le_pkts)
hdev->le_cnt = hdev->le_pkts;
} else {
hdev->acl_cnt += count;
if (hdev->acl_cnt > hdev->acl_pkts)
hdev->acl_cnt = hdev->acl_pkts;
}
break;
default:
bt_dev_err(hdev, "unknown type %d conn %p",
conn->type, conn);
@ -6480,6 +6655,127 @@ unlock:
hci_dev_unlock(hdev);
}
static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
struct sk_buff *skb)
{
struct hci_evt_le_cis_established *ev = data;
struct hci_conn *conn;
u16 handle = __le16_to_cpu(ev->handle);
bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
hci_dev_lock(hdev);
conn = hci_conn_hash_lookup_handle(hdev, handle);
if (!conn) {
bt_dev_err(hdev,
"Unable to find connection with handle 0x%4.4x",
handle);
goto unlock;
}
if (conn->role == HCI_ROLE_SLAVE) {
__le32 interval;
memset(&interval, 0, sizeof(interval));
memcpy(&interval, ev->c_latency, sizeof(ev->c_latency));
conn->iso_qos.in.interval = le32_to_cpu(interval);
memcpy(&interval, ev->p_latency, sizeof(ev->p_latency));
conn->iso_qos.out.interval = le32_to_cpu(interval);
conn->iso_qos.in.latency = le16_to_cpu(ev->interval);
conn->iso_qos.out.latency = le16_to_cpu(ev->interval);
conn->iso_qos.in.sdu = le16_to_cpu(ev->c_mtu);
conn->iso_qos.out.sdu = le16_to_cpu(ev->p_mtu);
conn->iso_qos.in.phy = ev->c_phy;
conn->iso_qos.out.phy = ev->p_phy;
}
if (!ev->status) {
conn->state = BT_CONNECTED;
hci_debugfs_create_conn(conn);
hci_conn_add_sysfs(conn);
hci_iso_setup_path(conn);
goto unlock;
}
hci_connect_cfm(conn, ev->status);
hci_conn_del(conn);
unlock:
hci_dev_unlock(hdev);
}
static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
{
struct hci_cp_le_reject_cis cp;
memset(&cp, 0, sizeof(cp));
cp.handle = handle;
cp.reason = HCI_ERROR_REJ_BAD_ADDR;
hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
}
static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
{
struct hci_cp_le_accept_cis cp;
memset(&cp, 0, sizeof(cp));
cp.handle = handle;
hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
}
static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
struct sk_buff *skb)
{
struct hci_evt_le_cis_req *ev = data;
u16 acl_handle, cis_handle;
struct hci_conn *acl, *cis;
int mask;
__u8 flags = 0;
acl_handle = __le16_to_cpu(ev->acl_handle);
cis_handle = __le16_to_cpu(ev->cis_handle);
bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
acl_handle, cis_handle, ev->cig_id, ev->cis_id);
hci_dev_lock(hdev);
acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
if (!acl)
goto unlock;
mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
if (!(mask & HCI_LM_ACCEPT)) {
hci_le_reject_cis(hdev, ev->cis_handle);
goto unlock;
}
cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
if (!cis) {
cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE);
if (!cis) {
hci_le_reject_cis(hdev, ev->cis_handle);
goto unlock;
}
cis->handle = cis_handle;
}
cis->iso_qos.cig = ev->cig_id;
cis->iso_qos.cis = ev->cis_id;
if (!(flags & HCI_PROTO_DEFER)) {
hci_le_accept_cis(hdev, ev->cis_handle);
} else {
cis->state = BT_CONNECT2;
hci_connect_cfm(cis, 0);
}
unlock:
hci_dev_unlock(hdev);
}
#define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
[_op] = { \
.func = _func, \
@ -6543,6 +6839,12 @@ static const struct hci_le_ev {
/* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
sizeof(struct hci_evt_le_ext_adv_set_term)),
/* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
sizeof(struct hci_evt_le_cis_established)),
/* [0x1a = HCI_EVT_LE_CIS_REQ] */
HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
sizeof(struct hci_evt_le_cis_req)),
};
static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
@ -6581,7 +6883,6 @@ static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
if (skb->len > subev->max_len)
bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
ev->subevent, skb->len, subev->max_len);
data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
if (!data)
return;

49
net/bluetooth/hci_sync.c
View File

@ -2800,6 +2800,12 @@ static const struct hci_init_stage amp_init2[] = {
/* Read Buffer Size (ACL mtu, max pkt, etc.) */
static int hci_read_buffer_size_sync(struct hci_dev *hdev)
{
/* Use Read LE Buffer Size V2 if supported */
if (hdev->commands[41] & 0x20)
return __hci_cmd_sync_status(hdev,
HCI_OP_LE_READ_BUFFER_SIZE_V2,
0, NULL, HCI_CMD_TIMEOUT);
return __hci_cmd_sync_status(hdev, HCI_OP_READ_BUFFER_SIZE,
0, NULL, HCI_CMD_TIMEOUT);
}
@ -3051,6 +3057,10 @@ static int hci_init2_sync(struct hci_dev *hdev)
if (hdev->dev_type == HCI_AMP)
return hci_init_stage_sync(hdev, amp_init2);
err = hci_init_stage_sync(hdev, hci_init2);
if (err)
return err;
if (lmp_bredr_capable(hdev)) {
err = hci_init_stage_sync(hdev, br_init2);
if (err)
@ -3068,7 +3078,7 @@ static int hci_init2_sync(struct hci_dev *hdev)
hci_dev_set_flag(hdev, HCI_LE_ENABLED);
}
return hci_init_stage_sync(hdev, hci_init2);
return 0;
}
static int hci_set_event_mask_sync(struct hci_dev *hdev)
@ -3389,6 +3399,12 @@ static int hci_le_set_event_mask_sync(struct hci_dev *hdev)
if (ext_adv_capable(hdev))
events[2] |= 0x02; /* LE Advertising Set Terminated */
if (cis_capable(hdev)) {
events[3] |= 0x01; /* LE CIS Established */
if (cis_peripheral_capable(hdev))
events[3] |= 0x02; /* LE CIS Request */
}
return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EVENT_MASK,
sizeof(events), events, HCI_CMD_TIMEOUT);
}
@ -3529,6 +3545,24 @@ static int hci_set_le_support_sync(struct hci_dev *hdev)
sizeof(cp), &cp, HCI_CMD_TIMEOUT);
}
/* LE Set Host Feature */
static int hci_le_set_host_feature_sync(struct hci_dev *hdev)
{
struct hci_cp_le_set_host_feature cp;
if (!iso_capable(hdev))
return 0;
memset(&cp, 0, sizeof(cp));
/* Isochronous Channels (Host Support) */
cp.bit_number = 32;
cp.bit_value = 1;
return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_HOST_FEATURE,
sizeof(cp), &cp, HCI_CMD_TIMEOUT);
}
/* LE Controller init stage 3 command sequence */
static const struct hci_init_stage le_init3[] = {
/* HCI_OP_LE_SET_EVENT_MASK */
@ -3555,6 +3589,8 @@ static const struct hci_init_stage le_init3[] = {
HCI_INIT(hci_le_read_num_support_adv_sets_sync),
/* HCI_OP_WRITE_LE_HOST_SUPPORTED */
HCI_INIT(hci_set_le_support_sync),
/* HCI_OP_LE_SET_HOST_FEATURE */
HCI_INIT(hci_le_set_host_feature_sync),
{}
};
@ -5437,3 +5473,14 @@ done:
hci_resume_advertising_sync(hdev);
return err;
}
int hci_le_remove_cig_sync(struct hci_dev *hdev, u8 handle)
{
struct hci_cp_le_remove_cig cp;
memset(&cp, 0, sizeof(cp));
cp.cig_id = handle;
return __hci_cmd_sync_status(hdev, HCI_OP_LE_REMOVE_CIG, sizeof(cp),
&cp, HCI_CMD_TIMEOUT);
}