From: Claudio Takahasi <claudio.takahasi@xxxxxxxxxxxxx>
Asynchronous read of the current transmission power of a given
connection. Results are reported through events.
---
plugins/hciops.c | 43 +++++++++++++++++++++++++++++++++++++++++++
plugins/mgmtops.c | 11 +++++++++++
src/adapter.h | 1 +
src/event.c | 8 ++++++++
src/event.h | 1 +
5 files changed, 64 insertions(+), 0 deletions(-)
diff --git a/plugins/hciops.c b/plugins/hciops.c
index 6ce0e27..93cf822 100644
--- a/plugins/hciops.c
+++ b/plugins/hciops.c
@@ -1773,6 +1773,22 @@ static inline void cc_le_set_scan_enable(int index, uint8_t status)
set_state(index, DISCOV_SCAN);
}
+static inline void read_txpower_complete(int index, void *ptr)
+{
+ struct dev_info *dev = &devs[index];
+ read_transmit_power_level_rp *rp = ptr;
+ struct bt_conn *conn;
+
+ if (rp->status)
+ return;
+
+ conn = find_conn_by_handle(dev, rp->handle);
+ if (conn == NULL)
+ return;
+
+ btd_event_txpower_read(&dev->bdaddr, &conn->bdaddr, rp->level);
+}
+
static inline void cmd_complete(int index, void *ptr)
{
struct dev_info *dev = &devs[index];
@@ -1844,6 +1860,10 @@ static inline void cmd_complete(int index, void *ptr)
ptr += sizeof(evt_cmd_complete);
read_local_oob_data_complete(index, status, ptr);
break;
+ case cmd_opcode_pack(OGF_HOST_CTL, OCF_READ_TRANSMIT_POWER_LEVEL):
+ ptr += sizeof(evt_cmd_complete);
+ read_txpower_complete(index, ptr);
+ break;
};
}
@@ -3158,6 +3178,28 @@ static int hciops_read_clock(int index, bdaddr_t *bdaddr, int which,
return 0;
}
+static int hciops_read_tx_power(int index, bdaddr_t *bdaddr)
+{
+ struct dev_info *dev = &devs[index];
+ read_transmit_power_level_cp cp;
+ uint16_t handle;
+ int err;
+
+ err = get_handle(index, bdaddr, &handle);
+ if (err < 0)
+ return err;
+
+ memset(&cp, 0, sizeof(cp));
+ cp.handle = htobs(handle);
+ cp.type = 0x00; /* Current */
+
+ if (hci_send_cmd(dev->sk, OGF_HOST_CTL, OCF_READ_TRANSMIT_POWER_LEVEL,
+ READ_TRANSMIT_POWER_LEVEL_CP_SIZE, &cp) < 0)
+ return -errno;
+
+ return 0;
+}
+
static int hciops_read_bdaddr(int index, bdaddr_t *bdaddr)
{
struct dev_info *dev = &devs[index];
@@ -3664,6 +3706,7 @@ static struct btd_adapter_ops hci_ops = {
.set_dev_class = hciops_set_dev_class,
.set_fast_connectable = hciops_fast_connectable,
.read_clock = hciops_read_clock,
+ .read_tx_power = hciops_read_tx_power,
.read_bdaddr = hciops_read_bdaddr,
.block_device = hciops_block_device,
.unblock_device = hciops_unblock_device,
diff --git a/plugins/mgmtops.c b/plugins/mgmtops.c
index 4302813..7ee86de 100644
--- a/plugins/mgmtops.c
+++ b/plugins/mgmtops.c
@@ -1673,6 +1673,16 @@ static int mgmt_read_clock(int index, bdaddr_t *bdaddr, int which, int timeout,
return -ENOSYS;
}
+static int mgmt_read_tx_power(int index, bdaddr_t *bdaddr)
+{
+ char addr[18];
+
+ ba2str(bdaddr, addr);
+ DBG("index %d addr %s read transmit power level", index, addr);
+
+ return -ENOSYS;
+}
+
static int mgmt_read_bdaddr(int index, bdaddr_t *bdaddr)
{
char addr[18];
@@ -2016,6 +2026,7 @@ static struct btd_adapter_ops mgmt_ops = {
.set_dev_class = mgmt_set_dev_class,
.set_fast_connectable = mgmt_fast_connectable,
.read_clock = mgmt_read_clock,
+ .read_tx_power = mgmt_read_tx_power,
.read_bdaddr = mgmt_read_bdaddr,
.block_device = mgmt_block_device,
.unblock_device = mgmt_unblock_device,
diff --git a/src/adapter.h b/src/adapter.h
index 3526849..1fa7431 100644
--- a/src/adapter.h
+++ b/src/adapter.h
@@ -182,6 +182,7 @@ struct btd_adapter_ops {
int (*set_fast_connectable) (int index, gboolean enable);
int (*read_clock) (int index, bdaddr_t *bdaddr, int which, int timeout,
uint32_t *clock, uint16_t *accuracy);
+ int (*read_tx_power) (int index, bdaddr_t *bdaddr);
int (*read_bdaddr) (int index, bdaddr_t *bdaddr);
int (*block_device) (int index, bdaddr_t *bdaddr);
int (*unblock_device) (int index, bdaddr_t *bdaddr);
diff --git a/src/event.c b/src/event.c
index 86a413e..e6383e6 100644
--- a/src/event.c
+++ b/src/event.c
@@ -475,3 +475,11 @@ void btd_event_returned_link_key(bdaddr_t *local, bdaddr_t *peer)
device_set_paired(device, TRUE);
}
+
+void btd_event_txpower_read(bdaddr_t *local, bdaddr_t *peer, int8_t level)
+{
+ char peer_addr[18];
+
+ ba2str(peer, peer_addr);
+ DBG("%s TX Power: %d", peer_addr, level);
+}
diff --git a/src/event.h b/src/event.h
index 1268edf..011d933 100644
--- a/src/event.h
+++ b/src/event.h
@@ -40,3 +40,4 @@ int btd_event_user_passkey(bdaddr_t *sba, bdaddr_t *dba);
int btd_event_user_notify(bdaddr_t *sba, bdaddr_t *dba, uint32_t passkey);
int btd_event_link_key_notify(bdaddr_t *local, bdaddr_t *peer, uint8_t *key,
uint8_t key_type, uint8_t pin_length);
+void btd_event_txpower_read(bdaddr_t *local, bdaddr_t *peer, int8_t level);
--
1.7.4.1
--
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