From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
This moves functions manipulating EIR/Adv Data to its own file so it
can be reused by other files.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 39 +--
net/bluetooth/Makefile | 2 +-
net/bluetooth/eir.c | 334 +++++++++++++++++++++++++
net/bluetooth/eir.h | 72 ++++++
net/bluetooth/hci_core.c | 54 ++++
net/bluetooth/hci_event.c | 1 +
net/bluetooth/hci_request.c | 416 ++-----------------------------
net/bluetooth/hci_request.h | 23 --
net/bluetooth/mgmt.c | 3 +-
9 files changed, 481 insertions(+), 463 deletions(-)
create mode 100644 net/bluetooth/eir.c
create mode 100644 net/bluetooth/eir.h
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index de95c47aaf77..28f70dca80c9 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1360,6 +1360,8 @@ int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
u16 scan_rsp_len, u8 *scan_rsp_data);
int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
+u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
+bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
void hci_adv_monitors_clear(struct hci_dev *hdev);
void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
@@ -1605,43 +1607,6 @@ static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
mutex_unlock(&hci_cb_list_lock);
}
-static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
- size_t *data_len)
-{
- size_t parsed = 0;
-
- if (eir_len < 2)
- return NULL;
-
- while (parsed < eir_len - 1) {
- u8 field_len = eir[0];
-
- if (field_len == 0)
- break;
-
- parsed += field_len + 1;
-
- if (parsed > eir_len)
- break;
-
- if (eir[1] != type) {
- eir += field_len + 1;
- continue;
- }
-
- /* Zero length data */
- if (field_len == 1)
- return NULL;
-
- if (data_len)
- *data_len = field_len - 1;
-
- return &eir[2];
- }
-
- return NULL;
-}
-
static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
{
if (addr_type != ADDR_LE_DEV_RANDOM)
diff --git a/net/bluetooth/Makefile b/net/bluetooth/Makefile
index cc0995301f93..0276e7d5d7ad 100644
--- a/net/bluetooth/Makefile
+++ b/net/bluetooth/Makefile
@@ -14,7 +14,7 @@ bluetooth_6lowpan-y := 6lowpan.o
bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o \
hci_sock.o hci_sysfs.o l2cap_core.o l2cap_sock.o smp.o lib.o \
- ecdh_helper.o hci_request.o mgmt_util.o mgmt_config.o
+ ecdh_helper.o eir.o hci_request.o mgmt_util.o mgmt_config.o
bluetooth-$(CONFIG_BT_BREDR) += sco.o
bluetooth-$(CONFIG_BT_HS) += a2mp.o amp.o
diff --git a/net/bluetooth/eir.c b/net/bluetooth/eir.c
new file mode 100644
index 000000000000..da1e536c5c27
--- /dev/null
+++ b/net/bluetooth/eir.c
@@ -0,0 +1,334 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2021 Intel Corporation
+ */
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <net/bluetooth/mgmt.h>
+
+#include "eir.h"
+
+#define PNP_INFO_SVCLASS_ID 0x1200
+
+u8 eir_append_local_name(struct hci_dev *hdev, u8 *ptr, u8 ad_len)
+{
+ size_t short_len;
+ size_t complete_len;
+
+ /* no space left for name (+ NULL + type + len) */
+ if ((HCI_MAX_AD_LENGTH - ad_len) < HCI_MAX_SHORT_NAME_LENGTH + 3)
+ return ad_len;
+
+ /* use complete name if present and fits */
+ complete_len = strlen(hdev->dev_name);
+ if (complete_len && complete_len <= HCI_MAX_SHORT_NAME_LENGTH)
+ return eir_append_data(ptr, ad_len, EIR_NAME_COMPLETE,
+ hdev->dev_name, complete_len + 1);
+
+ /* use short name if present */
+ short_len = strlen(hdev->short_name);
+ if (short_len)
+ return eir_append_data(ptr, ad_len, EIR_NAME_SHORT,
+ hdev->short_name, short_len + 1);
+
+ /* use shortened full name if present, we already know that name
+ * is longer then HCI_MAX_SHORT_NAME_LENGTH
+ */
+ if (complete_len) {
+ u8 name[HCI_MAX_SHORT_NAME_LENGTH + 1];
+
+ memcpy(name, hdev->dev_name, HCI_MAX_SHORT_NAME_LENGTH);
+ name[HCI_MAX_SHORT_NAME_LENGTH] = '\0';
+
+ return eir_append_data(ptr, ad_len, EIR_NAME_SHORT, name,
+ sizeof(name));
+ }
+
+ return ad_len;
+}
+
+u8 eir_append_appearance(struct hci_dev *hdev, u8 *ptr, u8 ad_len)
+{
+ return eir_append_le16(ptr, ad_len, EIR_APPEARANCE, hdev->appearance);
+}
+
+static u8 *create_uuid16_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
+{
+ u8 *ptr = data, *uuids_start = NULL;
+ struct bt_uuid *uuid;
+
+ if (len < 4)
+ return ptr;
+
+ list_for_each_entry(uuid, &hdev->uuids, list) {
+ u16 uuid16;
+
+ if (uuid->size != 16)
+ continue;
+
+ uuid16 = get_unaligned_le16(&uuid->uuid[12]);
+ if (uuid16 < 0x1100)
+ continue;
+
+ if (uuid16 == PNP_INFO_SVCLASS_ID)
+ continue;
+
+ if (!uuids_start) {
+ uuids_start = ptr;
+ uuids_start[0] = 1;
+ uuids_start[1] = EIR_UUID16_ALL;
+ ptr += 2;
+ }
+
+ /* Stop if not enough space to put next UUID */
+ if ((ptr - data) + sizeof(u16) > len) {
+ uuids_start[1] = EIR_UUID16_SOME;
+ break;
+ }
+
+ *ptr++ = (uuid16 & 0x00ff);
+ *ptr++ = (uuid16 & 0xff00) >> 8;
+ uuids_start[0] += sizeof(uuid16);
+ }
+
+ return ptr;
+}
+
+static u8 *create_uuid32_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
+{
+ u8 *ptr = data, *uuids_start = NULL;
+ struct bt_uuid *uuid;
+
+ if (len < 6)
+ return ptr;
+
+ list_for_each_entry(uuid, &hdev->uuids, list) {
+ if (uuid->size != 32)
+ continue;
+
+ if (!uuids_start) {
+ uuids_start = ptr;
+ uuids_start[0] = 1;
+ uuids_start[1] = EIR_UUID32_ALL;
+ ptr += 2;
+ }
+
+ /* Stop if not enough space to put next UUID */
+ if ((ptr - data) + sizeof(u32) > len) {
+ uuids_start[1] = EIR_UUID32_SOME;
+ break;
+ }
+
+ memcpy(ptr, &uuid->uuid[12], sizeof(u32));
+ ptr += sizeof(u32);
+ uuids_start[0] += sizeof(u32);
+ }
+
+ return ptr;
+}
+
+static u8 *create_uuid128_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
+{
+ u8 *ptr = data, *uuids_start = NULL;
+ struct bt_uuid *uuid;
+
+ if (len < 18)
+ return ptr;
+
+ list_for_each_entry(uuid, &hdev->uuids, list) {
+ if (uuid->size != 128)
+ continue;
+
+ if (!uuids_start) {
+ uuids_start = ptr;
+ uuids_start[0] = 1;
+ uuids_start[1] = EIR_UUID128_ALL;
+ ptr += 2;
+ }
+
+ /* Stop if not enough space to put next UUID */
+ if ((ptr - data) + 16 > len) {
+ uuids_start[1] = EIR_UUID128_SOME;
+ break;
+ }
+
+ memcpy(ptr, uuid->uuid, 16);
+ ptr += 16;
+ uuids_start[0] += 16;
+ }
+
+ return ptr;
+}
+
+void eir_create(struct hci_dev *hdev, u8 *data)
+{
+ u8 *ptr = data;
+ size_t name_len;
+
+ name_len = strlen(hdev->dev_name);
+
+ if (name_len > 0) {
+ /* EIR Data type */
+ if (name_len > 48) {
+ name_len = 48;
+ ptr[1] = EIR_NAME_SHORT;
+ } else
+ ptr[1] = EIR_NAME_COMPLETE;
+
+ /* EIR Data length */
+ ptr[0] = name_len + 1;
+
+ memcpy(ptr + 2, hdev->dev_name, name_len);
+
+ ptr += (name_len + 2);
+ }
+
+ if (hdev->inq_tx_power != HCI_TX_POWER_INVALID) {
+ ptr[0] = 2;
+ ptr[1] = EIR_TX_POWER;
+ ptr[2] = (u8) hdev->inq_tx_power;
+
+ ptr += 3;
+ }
+
+ if (hdev->devid_source > 0) {
+ ptr[0] = 9;
+ ptr[1] = EIR_DEVICE_ID;
+
+ put_unaligned_le16(hdev->devid_source, ptr + 2);
+ put_unaligned_le16(hdev->devid_vendor, ptr + 4);
+ put_unaligned_le16(hdev->devid_product, ptr + 6);
+ put_unaligned_le16(hdev->devid_version, ptr + 8);
+
+ ptr += 10;
+ }
+
+ ptr = create_uuid16_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
+ ptr = create_uuid32_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
+ ptr = create_uuid128_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
+}
+
+u8 eir_create_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)
+{
+ struct adv_info *adv = NULL;
+ u8 ad_len = 0, flags = 0;
+ u32 instance_flags;
+
+ /* Return 0 when the current instance identifier is invalid. */
+ if (instance) {
+ adv = hci_find_adv_instance(hdev, instance);
+ if (!adv)
+ return 0;
+ }
+
+ instance_flags = hci_adv_instance_flags(hdev, instance);
+
+ /* If instance already has the flags set skip adding it once
+ * again.
+ */
+ if (adv && eir_get_data(adv->adv_data, adv->adv_data_len, EIR_FLAGS,
+ NULL))
+ goto skip_flags;
+
+ /* The Add Advertising command allows userspace to set both the general
+ * and limited discoverable flags.
+ */
+ if (instance_flags & MGMT_ADV_FLAG_DISCOV)
+ flags |= LE_AD_GENERAL;
+
+ if (instance_flags & MGMT_ADV_FLAG_LIMITED_DISCOV)
+ flags |= LE_AD_LIMITED;
+
+ if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
+ flags |= LE_AD_NO_BREDR;
+
+ if (flags || (instance_flags & MGMT_ADV_FLAG_MANAGED_FLAGS)) {
+ /* If a discovery flag wasn't provided, simply use the global
+ * settings.
+ */
+ if (!flags)
+ flags |= mgmt_get_adv_discov_flags(hdev);
+
+ /* If flags would still be empty, then there is no need to
+ * include the "Flags" AD field".
+ */
+ if (flags) {
+ ptr[0] = 0x02;
+ ptr[1] = EIR_FLAGS;
+ ptr[2] = flags;
+
+ ad_len += 3;
+ ptr += 3;
+ }
+ }
+
+skip_flags:
+ if (adv) {
+ memcpy(ptr, adv->adv_data, adv->adv_data_len);
+ ad_len += adv->adv_data_len;
+ ptr += adv->adv_data_len;
+ }
+
+ if (instance_flags & MGMT_ADV_FLAG_TX_POWER) {
+ s8 adv_tx_power;
+
+ if (ext_adv_capable(hdev)) {
+ if (adv)
+ adv_tx_power = adv->tx_power;
+ else
+ adv_tx_power = hdev->adv_tx_power;
+ } else {
+ adv_tx_power = hdev->adv_tx_power;
+ }
+
+ /* Provide Tx Power only if we can provide a valid value for it */
+ if (adv_tx_power != HCI_TX_POWER_INVALID) {
+ ptr[0] = 0x02;
+ ptr[1] = EIR_TX_POWER;
+ ptr[2] = (u8)adv_tx_power;
+
+ ad_len += 3;
+ ptr += 3;
+ }
+ }
+
+ return ad_len;
+}
+
+static u8 create_default_scan_rsp(struct hci_dev *hdev, u8 *ptr)
+{
+ u8 scan_rsp_len = 0;
+
+ if (hdev->appearance)
+ scan_rsp_len = eir_append_appearance(hdev, ptr, scan_rsp_len);
+
+ return eir_append_local_name(hdev, ptr, scan_rsp_len);
+}
+
+u8 eir_create_scan_rsp(struct hci_dev *hdev, u8 instance, u8 *ptr)
+{
+ struct adv_info *adv;
+ u8 scan_rsp_len = 0;
+
+ if (!instance)
+ return create_default_scan_rsp(hdev, ptr);
+
+ adv = hci_find_adv_instance(hdev, instance);
+ if (!adv)
+ return 0;
+
+ if ((adv->flags & MGMT_ADV_FLAG_APPEARANCE) && hdev->appearance)
+ scan_rsp_len = eir_append_appearance(hdev, ptr, scan_rsp_len);
+
+ memcpy(&ptr[scan_rsp_len], adv->scan_rsp_data, adv->scan_rsp_len);
+
+ scan_rsp_len += adv->scan_rsp_len;
+
+ if (adv->flags & MGMT_ADV_FLAG_LOCAL_NAME)
+ scan_rsp_len = eir_append_local_name(hdev, ptr, scan_rsp_len);
+
+ return scan_rsp_len;
+}
diff --git a/net/bluetooth/eir.h b/net/bluetooth/eir.h
new file mode 100644
index 000000000000..724662f8f8b1
--- /dev/null
+++ b/net/bluetooth/eir.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2021 Intel Corporation
+ */
+
+void eir_create(struct hci_dev *hdev, u8 *data);
+
+u8 eir_create_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr);
+u8 eir_create_scan_rsp(struct hci_dev *hdev, u8 instance, u8 *ptr);
+
+u8 eir_append_local_name(struct hci_dev *hdev, u8 *eir, u8 ad_len);
+u8 eir_append_appearance(struct hci_dev *hdev, u8 *ptr, u8 ad_len);
+
+static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type,
+ u8 *data, u8 data_len)
+{
+ eir[eir_len++] = sizeof(type) + data_len;
+ eir[eir_len++] = type;
+ memcpy(&eir[eir_len], data, data_len);
+ eir_len += data_len;
+
+ return eir_len;
+}
+
+static inline u16 eir_append_le16(u8 *eir, u16 eir_len, u8 type, u16 data)
+{
+ eir[eir_len++] = sizeof(type) + sizeof(data);
+ eir[eir_len++] = type;
+ put_unaligned_le16(data, &eir[eir_len]);
+ eir_len += sizeof(data);
+
+ return eir_len;
+}
+
+static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
+ size_t *data_len)
+{
+ size_t parsed = 0;
+
+ if (eir_len < 2)
+ return NULL;
+
+ while (parsed < eir_len - 1) {
+ u8 field_len = eir[0];
+
+ if (field_len == 0)
+ break;
+
+ parsed += field_len + 1;
+
+ if (parsed > eir_len)
+ break;
+
+ if (eir[1] != type) {
+ eir += field_len + 1;
+ continue;
+ }
+
+ /* Zero length data */
+ if (field_len == 1)
+ return NULL;
+
+ if (data_len)
+ *data_len = field_len - 1;
+
+ return &eir[2];
+ }
+
+ return NULL;
+}
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index ba407976066b..bb10087f77cb 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3143,6 +3143,60 @@ int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
return 0;
}
+/* This function requires the caller holds hdev->lock */
+u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance)
+{
+ u32 flags;
+ struct adv_info *adv;
+
+ if (instance == 0x00) {
+ /* Instance 0 always manages the "Tx Power" and "Flags"
+ * fields
+ */
+ flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS;
+
+ /* For instance 0, the HCI_ADVERTISING_CONNECTABLE setting
+ * corresponds to the "connectable" instance flag.
+ */
+ if (hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE))
+ flags |= MGMT_ADV_FLAG_CONNECTABLE;
+
+ if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
+ flags |= MGMT_ADV_FLAG_LIMITED_DISCOV;
+ else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
+ flags |= MGMT_ADV_FLAG_DISCOV;
+
+ return flags;
+ }
+
+ adv = hci_find_adv_instance(hdev, instance);
+
+ /* Return 0 when we got an invalid instance identifier. */
+ if (!adv)
+ return 0;
+
+ return adv->flags;
+}
+
+bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance)
+{
+ struct adv_info *adv;
+
+ /* Instance 0x00 always set local name */
+ if (instance == 0x00)
+ return true;
+
+ adv = hci_find_adv_instance(hdev, instance);
+ if (!adv)
+ return false;
+
+ if (adv->flags & MGMT_ADV_FLAG_APPEARANCE ||
+ adv->flags & MGMT_ADV_FLAG_LOCAL_NAME)
+ return true;
+
+ return adv->scan_rsp_len ? true : false;
+}
+
/* This function requires the caller holds hdev->lock */
void hci_adv_monitors_clear(struct hci_dev *hdev)
{
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index cde6a43cc61d..3106ee9d2c04 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -36,6 +36,7 @@
#include "amp.h"
#include "smp.h"
#include "msft.h"
+#include "eir.h"
#define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
"\x00\x00\x00\x00\x00\x00\x00\x00"
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index fa9125b782f8..2c291ff555ed 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -30,6 +30,7 @@
#include "smp.h"
#include "hci_request.h"
#include "msft.h"
+#include "eir.h"
#define HCI_REQ_DONE 0
#define HCI_REQ_PEND 1
@@ -521,164 +522,6 @@ void __hci_req_update_name(struct hci_request *req)
hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp);
}
-#define PNP_INFO_SVCLASS_ID 0x1200
-
-static u8 *create_uuid16_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
-{
- u8 *ptr = data, *uuids_start = NULL;
- struct bt_uuid *uuid;
-
- if (len < 4)
- return ptr;
-
- list_for_each_entry(uuid, &hdev->uuids, list) {
- u16 uuid16;
-
- if (uuid->size != 16)
- continue;
-
- uuid16 = get_unaligned_le16(&uuid->uuid[12]);
- if (uuid16 < 0x1100)
- continue;
-
- if (uuid16 == PNP_INFO_SVCLASS_ID)
- continue;
-
- if (!uuids_start) {
- uuids_start = ptr;
- uuids_start[0] = 1;
- uuids_start[1] = EIR_UUID16_ALL;
- ptr += 2;
- }
-
- /* Stop if not enough space to put next UUID */
- if ((ptr - data) + sizeof(u16) > len) {
- uuids_start[1] = EIR_UUID16_SOME;
- break;
- }
-
- *ptr++ = (uuid16 & 0x00ff);
- *ptr++ = (uuid16 & 0xff00) >> 8;
- uuids_start[0] += sizeof(uuid16);
- }
-
- return ptr;
-}
-
-static u8 *create_uuid32_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
-{
- u8 *ptr = data, *uuids_start = NULL;
- struct bt_uuid *uuid;
-
- if (len < 6)
- return ptr;
-
- list_for_each_entry(uuid, &hdev->uuids, list) {
- if (uuid->size != 32)
- continue;
-
- if (!uuids_start) {
- uuids_start = ptr;
- uuids_start[0] = 1;
- uuids_start[1] = EIR_UUID32_ALL;
- ptr += 2;
- }
-
- /* Stop if not enough space to put next UUID */
- if ((ptr - data) + sizeof(u32) > len) {
- uuids_start[1] = EIR_UUID32_SOME;
- break;
- }
-
- memcpy(ptr, &uuid->uuid[12], sizeof(u32));
- ptr += sizeof(u32);
- uuids_start[0] += sizeof(u32);
- }
-
- return ptr;
-}
-
-static u8 *create_uuid128_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
-{
- u8 *ptr = data, *uuids_start = NULL;
- struct bt_uuid *uuid;
-
- if (len < 18)
- return ptr;
-
- list_for_each_entry(uuid, &hdev->uuids, list) {
- if (uuid->size != 128)
- continue;
-
- if (!uuids_start) {
- uuids_start = ptr;
- uuids_start[0] = 1;
- uuids_start[1] = EIR_UUID128_ALL;
- ptr += 2;
- }
-
- /* Stop if not enough space to put next UUID */
- if ((ptr - data) + 16 > len) {
- uuids_start[1] = EIR_UUID128_SOME;
- break;
- }
-
- memcpy(ptr, uuid->uuid, 16);
- ptr += 16;
- uuids_start[0] += 16;
- }
-
- return ptr;
-}
-
-static void create_eir(struct hci_dev *hdev, u8 *data)
-{
- u8 *ptr = data;
- size_t name_len;
-
- name_len = strlen(hdev->dev_name);
-
- if (name_len > 0) {
- /* EIR Data type */
- if (name_len > 48) {
- name_len = 48;
- ptr[1] = EIR_NAME_SHORT;
- } else
- ptr[1] = EIR_NAME_COMPLETE;
-
- /* EIR Data length */
- ptr[0] = name_len + 1;
-
- memcpy(ptr + 2, hdev->dev_name, name_len);
-
- ptr += (name_len + 2);
- }
-
- if (hdev->inq_tx_power != HCI_TX_POWER_INVALID) {
- ptr[0] = 2;
- ptr[1] = EIR_TX_POWER;
- ptr[2] = (u8) hdev->inq_tx_power;
-
- ptr += 3;
- }
-
- if (hdev->devid_source > 0) {
- ptr[0] = 9;
- ptr[1] = EIR_DEVICE_ID;
-
- put_unaligned_le16(hdev->devid_source, ptr + 2);
- put_unaligned_le16(hdev->devid_vendor, ptr + 4);
- put_unaligned_le16(hdev->devid_product, ptr + 6);
- put_unaligned_le16(hdev->devid_version, ptr + 8);
-
- ptr += 10;
- }
-
- ptr = create_uuid16_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
- ptr = create_uuid32_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
- ptr = create_uuid128_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
-}
-
void __hci_req_update_eir(struct hci_request *req)
{
struct hci_dev *hdev = req->hdev;
@@ -698,7 +541,7 @@ void __hci_req_update_eir(struct hci_request *req)
memset(&cp, 0, sizeof(cp));
- create_eir(hdev, cp.data);
+ eir_create(hdev, cp.data);
if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
return;
@@ -1116,25 +959,6 @@ void hci_req_add_le_passive_scan(struct hci_request *req)
own_addr_type, filter_policy, addr_resolv);
}
-static bool adv_instance_is_scannable(struct hci_dev *hdev, u8 instance)
-{
- struct adv_info *adv_instance;
-
- /* Instance 0x00 always set local name */
- if (instance == 0x00)
- return true;
-
- adv_instance = hci_find_adv_instance(hdev, instance);
- if (!adv_instance)
- return false;
-
- if (adv_instance->flags & MGMT_ADV_FLAG_APPEARANCE ||
- adv_instance->flags & MGMT_ADV_FLAG_LOCAL_NAME)
- return true;
-
- return adv_instance->scan_rsp_len ? true : false;
-}
-
static void hci_req_clear_event_filter(struct hci_request *req)
{
struct hci_cp_set_event_filter f;
@@ -1424,7 +1248,7 @@ void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
static bool adv_cur_instance_is_scannable(struct hci_dev *hdev)
{
- return adv_instance_is_scannable(hdev, hdev->cur_adv_instance);
+ return hci_adv_instance_is_scannable(hdev, hdev->cur_adv_instance);
}
void __hci_req_disable_advertising(struct hci_request *req)
@@ -1439,40 +1263,6 @@ void __hci_req_disable_advertising(struct hci_request *req)
}
}
-static u32 get_adv_instance_flags(struct hci_dev *hdev, u8 instance)
-{
- u32 flags;
- struct adv_info *adv_instance;
-
- if (instance == 0x00) {
- /* Instance 0 always manages the "Tx Power" and "Flags"
- * fields
- */
- flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS;
-
- /* For instance 0, the HCI_ADVERTISING_CONNECTABLE setting
- * corresponds to the "connectable" instance flag.
- */
- if (hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE))
- flags |= MGMT_ADV_FLAG_CONNECTABLE;
-
- if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
- flags |= MGMT_ADV_FLAG_LIMITED_DISCOV;
- else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
- flags |= MGMT_ADV_FLAG_DISCOV;
-
- return flags;
- }
-
- adv_instance = hci_find_adv_instance(hdev, instance);
-
- /* Return 0 when we got an invalid instance identifier. */
- if (!adv_instance)
- return 0;
-
- return adv_instance->flags;
-}
-
static bool adv_use_rpa(struct hci_dev *hdev, uint32_t flags)
{
/* If privacy is not enabled don't use RPA */
@@ -1536,15 +1326,15 @@ static bool is_advertising_allowed(struct hci_dev *hdev, bool connectable)
void __hci_req_enable_advertising(struct hci_request *req)
{
struct hci_dev *hdev = req->hdev;
- struct adv_info *adv_instance;
+ struct adv_info *adv;
struct hci_cp_le_set_adv_param cp;
u8 own_addr_type, enable = 0x01;
bool connectable;
u16 adv_min_interval, adv_max_interval;
u32 flags;
- flags = get_adv_instance_flags(hdev, hdev->cur_adv_instance);
- adv_instance = hci_find_adv_instance(hdev, hdev->cur_adv_instance);
+ flags = hci_adv_instance_flags(hdev, hdev->cur_adv_instance);
+ adv = hci_find_adv_instance(hdev, hdev->cur_adv_instance);
/* If the "connectable" instance flag was not set, then choose between
* ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
@@ -1576,9 +1366,9 @@ void __hci_req_enable_advertising(struct hci_request *req)
memset(&cp, 0, sizeof(cp));
- if (adv_instance) {
- adv_min_interval = adv_instance->min_interval;
- adv_max_interval = adv_instance->max_interval;
+ if (adv) {
+ adv_min_interval = adv->min_interval;
+ adv_max_interval = adv->max_interval;
} else {
adv_min_interval = hdev->le_adv_min_interval;
adv_max_interval = hdev->le_adv_max_interval;
@@ -1609,85 +1399,6 @@ void __hci_req_enable_advertising(struct hci_request *req)
hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
}
-u8 append_local_name(struct hci_dev *hdev, u8 *ptr, u8 ad_len)
-{
- size_t short_len;
- size_t complete_len;
-
- /* no space left for name (+ NULL + type + len) */
- if ((HCI_MAX_AD_LENGTH - ad_len) < HCI_MAX_SHORT_NAME_LENGTH + 3)
- return ad_len;
-
- /* use complete name if present and fits */
- complete_len = strlen(hdev->dev_name);
- if (complete_len && complete_len <= HCI_MAX_SHORT_NAME_LENGTH)
- return eir_append_data(ptr, ad_len, EIR_NAME_COMPLETE,
- hdev->dev_name, complete_len + 1);
-
- /* use short name if present */
- short_len = strlen(hdev->short_name);
- if (short_len)
- return eir_append_data(ptr, ad_len, EIR_NAME_SHORT,
- hdev->short_name, short_len + 1);
-
- /* use shortened full name if present, we already know that name
- * is longer then HCI_MAX_SHORT_NAME_LENGTH
- */
- if (complete_len) {
- u8 name[HCI_MAX_SHORT_NAME_LENGTH + 1];
-
- memcpy(name, hdev->dev_name, HCI_MAX_SHORT_NAME_LENGTH);
- name[HCI_MAX_SHORT_NAME_LENGTH] = '\0';
-
- return eir_append_data(ptr, ad_len, EIR_NAME_SHORT, name,
- sizeof(name));
- }
-
- return ad_len;
-}
-
-static u8 append_appearance(struct hci_dev *hdev, u8 *ptr, u8 ad_len)
-{
- return eir_append_le16(ptr, ad_len, EIR_APPEARANCE, hdev->appearance);
-}
-
-static u8 create_default_scan_rsp_data(struct hci_dev *hdev, u8 *ptr)
-{
- u8 scan_rsp_len = 0;
-
- if (hdev->appearance)
- scan_rsp_len = append_appearance(hdev, ptr, scan_rsp_len);
-
- return append_local_name(hdev, ptr, scan_rsp_len);
-}
-
-static u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 instance,
- u8 *ptr)
-{
- struct adv_info *adv_instance;
- u32 instance_flags;
- u8 scan_rsp_len = 0;
-
- adv_instance = hci_find_adv_instance(hdev, instance);
- if (!adv_instance)
- return 0;
-
- instance_flags = adv_instance->flags;
-
- if ((instance_flags & MGMT_ADV_FLAG_APPEARANCE) && hdev->appearance)
- scan_rsp_len = append_appearance(hdev, ptr, scan_rsp_len);
-
- memcpy(&ptr[scan_rsp_len], adv_instance->scan_rsp_data,
- adv_instance->scan_rsp_len);
-
- scan_rsp_len += adv_instance->scan_rsp_len;
-
- if (instance_flags & MGMT_ADV_FLAG_LOCAL_NAME)
- scan_rsp_len = append_local_name(hdev, ptr, scan_rsp_len);
-
- return scan_rsp_len;
-}
-
void __hci_req_update_scan_rsp_data(struct hci_request *req, u8 instance)
{
struct hci_dev *hdev = req->hdev;
@@ -1701,11 +1412,7 @@ void __hci_req_update_scan_rsp_data(struct hci_request *req, u8 instance)
memset(&cp, 0, sizeof(cp));
- if (instance)
- len = create_instance_scan_rsp_data(hdev, instance,
- cp.data);
- else
- len = create_default_scan_rsp_data(hdev, cp.data);
+ len = eir_create_scan_rsp(hdev, instance, cp.data);
if (hdev->scan_rsp_data_len == len &&
!memcmp(cp.data, hdev->scan_rsp_data, len))
@@ -1726,11 +1433,7 @@ void __hci_req_update_scan_rsp_data(struct hci_request *req, u8 instance)
memset(&cp, 0, sizeof(cp));
- if (instance)
- len = create_instance_scan_rsp_data(hdev, instance,
- cp.data);
- else
- len = create_default_scan_rsp_data(hdev, cp.data);
+ len = eir_create_scan_rsp(hdev, instance, cp.data);
if (hdev->scan_rsp_data_len == len &&
!memcmp(cp.data, hdev->scan_rsp_data, len))
@@ -1745,95 +1448,6 @@ void __hci_req_update_scan_rsp_data(struct hci_request *req, u8 instance)
}
}
-static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)
-{
- struct adv_info *adv_instance = NULL;
- u8 ad_len = 0, flags = 0;
- u32 instance_flags;
-
- /* Return 0 when the current instance identifier is invalid. */
- if (instance) {
- adv_instance = hci_find_adv_instance(hdev, instance);
- if (!adv_instance)
- return 0;
- }
-
- instance_flags = get_adv_instance_flags(hdev, instance);
-
- /* If instance already has the flags set skip adding it once
- * again.
- */
- if (adv_instance && eir_get_data(adv_instance->adv_data,
- adv_instance->adv_data_len, EIR_FLAGS,
- NULL))
- goto skip_flags;
-
- /* The Add Advertising command allows userspace to set both the general
- * and limited discoverable flags.
- */
- if (instance_flags & MGMT_ADV_FLAG_DISCOV)
- flags |= LE_AD_GENERAL;
-
- if (instance_flags & MGMT_ADV_FLAG_LIMITED_DISCOV)
- flags |= LE_AD_LIMITED;
-
- if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
- flags |= LE_AD_NO_BREDR;
-
- if (flags || (instance_flags & MGMT_ADV_FLAG_MANAGED_FLAGS)) {
- /* If a discovery flag wasn't provided, simply use the global
- * settings.
- */
- if (!flags)
- flags |= mgmt_get_adv_discov_flags(hdev);
-
- /* If flags would still be empty, then there is no need to
- * include the "Flags" AD field".
- */
- if (flags) {
- ptr[0] = 0x02;
- ptr[1] = EIR_FLAGS;
- ptr[2] = flags;
-
- ad_len += 3;
- ptr += 3;
- }
- }
-
-skip_flags:
- if (adv_instance) {
- memcpy(ptr, adv_instance->adv_data,
- adv_instance->adv_data_len);
- ad_len += adv_instance->adv_data_len;
- ptr += adv_instance->adv_data_len;
- }
-
- if (instance_flags & MGMT_ADV_FLAG_TX_POWER) {
- s8 adv_tx_power;
-
- if (ext_adv_capable(hdev)) {
- if (adv_instance)
- adv_tx_power = adv_instance->tx_power;
- else
- adv_tx_power = hdev->adv_tx_power;
- } else {
- adv_tx_power = hdev->adv_tx_power;
- }
-
- /* Provide Tx Power only if we can provide a valid value for it */
- if (adv_tx_power != HCI_TX_POWER_INVALID) {
- ptr[0] = 0x02;
- ptr[1] = EIR_TX_POWER;
- ptr[2] = (u8)adv_tx_power;
-
- ad_len += 3;
- ptr += 3;
- }
- }
-
- return ad_len;
-}
-
void __hci_req_update_adv_data(struct hci_request *req, u8 instance)
{
struct hci_dev *hdev = req->hdev;
@@ -1847,7 +1461,7 @@ void __hci_req_update_adv_data(struct hci_request *req, u8 instance)
memset(&cp, 0, sizeof(cp));
- len = create_instance_adv_data(hdev, instance, cp.data);
+ len = eir_create_adv_data(hdev, instance, cp.data);
/* There's nothing to do if the data hasn't changed */
if (hdev->adv_data_len == len &&
@@ -1868,7 +1482,7 @@ void __hci_req_update_adv_data(struct hci_request *req, u8 instance)
memset(&cp, 0, sizeof(cp));
- len = create_instance_adv_data(hdev, instance, cp.data);
+ len = eir_create_adv_data(hdev, instance, cp.data);
/* There's nothing to do if the data hasn't changed */
if (hdev->adv_data_len == len &&
@@ -2147,7 +1761,7 @@ int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
adv_instance = NULL;
}
- flags = get_adv_instance_flags(hdev, instance);
+ flags = hci_adv_instance_flags(hdev, instance);
/* If the "connectable" instance flag was not set, then choose between
* ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
@@ -2187,7 +1801,7 @@ int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
cp.evt_properties = cpu_to_le16(LE_EXT_ADV_CONN_IND);
else
cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_IND);
- } else if (adv_instance_is_scannable(hdev, instance) ||
+ } else if (hci_adv_instance_is_scannable(hdev, instance) ||
(flags & MGMT_ADV_PARAM_SCAN_RSP)) {
if (secondary_adv)
cp.evt_properties = cpu_to_le16(LE_EXT_ADV_SCAN_IND);
diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h
index 39ee8a18087a..4824be833169 100644
--- a/net/bluetooth/hci_request.h
+++ b/net/bluetooth/hci_request.h
@@ -122,26 +122,3 @@ static inline void hci_update_background_scan(struct hci_dev *hdev)
void hci_request_setup(struct hci_dev *hdev);
void hci_request_cancel_all(struct hci_dev *hdev);
-
-u8 append_local_name(struct hci_dev *hdev, u8 *ptr, u8 ad_len);
-
-static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type,
- u8 *data, u8 data_len)
-{
- eir[eir_len++] = sizeof(type) + data_len;
- eir[eir_len++] = type;
- memcpy(&eir[eir_len], data, data_len);
- eir_len += data_len;
-
- return eir_len;
-}
-
-static inline u16 eir_append_le16(u8 *eir, u16 eir_len, u8 type, u16 data)
-{
- eir[eir_len++] = sizeof(type) + sizeof(data);
- eir[eir_len++] = type;
- put_unaligned_le16(data, &eir[eir_len]);
- eir_len += sizeof(data);
-
- return eir_len;
-}
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index b44e19c69c44..118996245eab 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -38,6 +38,7 @@
#include "mgmt_util.h"
#include "mgmt_config.h"
#include "msft.h"
+#include "eir.h"
#define MGMT_VERSION 1
#define MGMT_REVISION 20
@@ -7524,7 +7525,7 @@ static u8 calculate_name_len(struct hci_dev *hdev)
{
u8 buf[HCI_MAX_SHORT_NAME_LENGTH + 3];
- return append_local_name(hdev, buf, 0);
+ return eir_append_local_name(hdev, buf, 0);
}
static u8 tlv_data_max_len(struct hci_dev *hdev, u32 adv_flags,
--
2.31.1
