From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: Wed, 1 Dec 2021 11:49:50 -0800
Subject: Bluetooth: hci_core: Rework hci_conn_params flags
Patch-mainline: v5.17-rc1
Git-commit: fe92ee6425a2c79ee84f0b9b8a14117200d15f7d
References: jsc#PED-1407
This reworks hci_conn_params flags to use bitmap_* helpers and add
support for setting the supported flags in hdev->conn_flags so it can
easily be accessed.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
include/net/bluetooth/hci_core.h | 24 ++++++++++++------------
net/bluetooth/hci_core.c | 8 +++++++-
net/bluetooth/hci_request.c | 4 ++--
net/bluetooth/hci_sync.c | 7 +++----
net/bluetooth/mgmt.c | 30 ++++++++++++++++++++----------
5 files changed, 44 insertions(+), 29 deletions(-)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -152,22 +152,21 @@ struct bdaddr_list_with_irk {
u8 local_irk[16];
};
-struct bdaddr_list_with_flags {
- struct list_head list;
- bdaddr_t bdaddr;
- u8 bdaddr_type;
- u32 current_flags;
-};
-
enum hci_conn_flags {
HCI_CONN_FLAG_REMOTE_WAKEUP,
- HCI_CONN_FLAG_MAX
-};
-#define hci_conn_test_flag(nr, flags) ((flags) & (1U << nr))
+ __HCI_CONN_NUM_FLAGS,
+};
/* Make sure number of flags doesn't exceed sizeof(current_flags) */
-static_assert(HCI_CONN_FLAG_MAX < 32);
+static_assert(__HCI_CONN_NUM_FLAGS < 32);
+
+struct bdaddr_list_with_flags {
+ struct list_head list;
+ bdaddr_t bdaddr;
+ u8 bdaddr_type;
+ DECLARE_BITMAP(flags, __HCI_CONN_NUM_FLAGS);
+};
struct bt_uuid {
struct list_head list;
@@ -560,6 +559,7 @@ struct hci_dev {
struct rfkill *rfkill;
DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
+ DECLARE_BITMAP(conn_flags, __HCI_CONN_NUM_FLAGS);
__s8 adv_tx_power;
__u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
@@ -755,7 +755,7 @@ struct hci_conn_params {
struct hci_conn *conn;
bool explicit_connect;
- u32 current_flags;
+ DECLARE_BITMAP(flags, __HCI_CONN_NUM_FLAGS);
};
extern struct list_head hci_dev_list;
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2153,7 +2153,7 @@ int hci_bdaddr_list_add_with_flags(struc
bacpy(&entry->bdaddr, bdaddr);
entry->bdaddr_type = type;
- entry->current_flags = flags;
+ bitmap_from_u64(entry->flags, flags);
list_add(&entry->list, list);
@@ -2629,6 +2629,12 @@ int hci_register_dev(struct hci_dev *hde
if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
hci_dev_set_flag(hdev, HCI_UNCONFIGURED);
+ /* Mark Remote Wakeup connection flag as supported if driver has wakeup
+ * callback.
+ */
+ if (hdev->wakeup)
+ set_bit(HCI_CONN_FLAG_REMOTE_WAKEUP, hdev->conn_flags);
+
hci_sock_dev_event(hdev, HCI_DEV_REG);
hci_dev_hold(hdev);
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -481,8 +481,8 @@ static int add_to_accept_list(struct hci
}
/* During suspend, only wakeable devices can be in accept list */
- if (hdev->suspended && !hci_conn_test_flag(HCI_CONN_FLAG_REMOTE_WAKEUP,
- params->current_flags))
+ if (hdev->suspended &&
+ !test_bit(HCI_CONN_FLAG_REMOTE_WAKEUP, params->flags))
return 0;
*num_entries += 1;
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -1623,8 +1623,8 @@ static int hci_le_add_accept_list_sync(s
}
/* During suspend, only wakeable devices can be in acceptlist */
- if (hdev->suspended && !hci_conn_test_flag(HCI_CONN_FLAG_REMOTE_WAKEUP,
- params->current_flags))
+ if (hdev->suspended &&
+ !test_bit(HCI_CONN_FLAG_REMOTE_WAKEUP, params->flags))
return 0;
/* Attempt to program the device in the resolving list first to avoid
@@ -4767,8 +4767,7 @@ static int hci_update_event_filter_sync(
hci_clear_event_filter_sync(hdev);
list_for_each_entry(b, &hdev->accept_list, list) {
- if (!hci_conn_test_flag(HCI_CONN_FLAG_REMOTE_WAKEUP,
- b->current_flags))
+ if (!test_bit(HCI_CONN_FLAG_REMOTE_WAKEUP, b->flags))
continue;
bt_dev_dbg(hdev, "Adding event filters for %pMR", &b->bdaddr);
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -4349,8 +4349,6 @@ static int set_exp_feature(struct sock *
MGMT_STATUS_NOT_SUPPORTED);
}
-#define SUPPORTED_DEVICE_FLAGS() ((1U << HCI_CONN_FLAG_MAX) - 1)
-
static int get_device_flags(struct sock *sk, struct hci_dev *hdev, void *data,
u16 data_len)
{
@@ -4358,7 +4356,7 @@ static int get_device_flags(struct sock
struct mgmt_rp_get_device_flags rp;
struct bdaddr_list_with_flags *br_params;
struct hci_conn_params *params;
- u32 supported_flags = SUPPORTED_DEVICE_FLAGS();
+ u32 supported_flags;
u32 current_flags = 0;
u8 status = MGMT_STATUS_INVALID_PARAMS;
@@ -4367,6 +4365,9 @@ static int get_device_flags(struct sock
hci_dev_lock(hdev);
+ bitmap_to_arr32(&supported_flags, hdev->conn_flags,
+ __HCI_CONN_NUM_FLAGS);
+
memset(&rp, 0, sizeof(rp));
if (cp->addr.type == BDADDR_BREDR) {
@@ -4376,7 +4377,8 @@ static int get_device_flags(struct sock
if (!br_params)
goto done;
- current_flags = br_params->current_flags;
+ bitmap_to_arr32(¤t_flags, br_params->flags,
+ __HCI_CONN_NUM_FLAGS);
} else {
params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr,
le_addr_type(cp->addr.type));
@@ -4384,7 +4386,8 @@ static int get_device_flags(struct sock
if (!params)
goto done;
- current_flags = params->current_flags;
+ bitmap_to_arr32(¤t_flags, params->flags,
+ __HCI_CONN_NUM_FLAGS);
}
bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
@@ -4422,13 +4425,16 @@ static int set_device_flags(struct sock
struct bdaddr_list_with_flags *br_params;
struct hci_conn_params *params;
u8 status = MGMT_STATUS_INVALID_PARAMS;
- u32 supported_flags = SUPPORTED_DEVICE_FLAGS();
+ u32 supported_flags;
u32 current_flags = __le32_to_cpu(cp->current_flags);
bt_dev_dbg(hdev, "Set device flags %pMR (type 0x%x) = 0x%x",
&cp->addr.bdaddr, cp->addr.type,
__le32_to_cpu(current_flags));
+ bitmap_to_arr32(&supported_flags, hdev->conn_flags,
+ __HCI_CONN_NUM_FLAGS);
+
if ((supported_flags | current_flags) != supported_flags) {
bt_dev_warn(hdev, "Bad flag given (0x%x) vs supported (0x%0x)",
current_flags, supported_flags);
@@ -4443,7 +4449,7 @@ static int set_device_flags(struct sock
cp->addr.type);
if (br_params) {
- br_params->current_flags = current_flags;
+ bitmap_from_u64(br_params->flags, current_flags);
status = MGMT_STATUS_SUCCESS;
} else {
bt_dev_warn(hdev, "No such BR/EDR device %pMR (0x%x)",
@@ -4453,7 +4459,7 @@ static int set_device_flags(struct sock
params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr,
le_addr_type(cp->addr.type));
if (params) {
- params->current_flags = current_flags;
+ bitmap_from_u64(params->flags, current_flags);
status = MGMT_STATUS_SUCCESS;
} else {
bt_dev_warn(hdev, "No such LE device %pMR (0x%x)",
@@ -6979,6 +6985,7 @@ static int add_device(struct sock *sk, s
struct hci_conn_params *params;
int err;
u32 current_flags = 0;
+ u32 supported_flags;
bt_dev_dbg(hdev, "sock %p", sk);
@@ -7050,7 +7057,8 @@ static int add_device(struct sock *sk, s
params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr,
addr_type);
if (params)
- current_flags = params->current_flags;
+ bitmap_to_arr32(¤t_flags, params->flags,
+ __HCI_CONN_NUM_FLAGS);
}
err = hci_cmd_sync_queue(hdev, add_device_sync, NULL, NULL);
@@ -7059,8 +7067,10 @@ static int add_device(struct sock *sk, s
added:
device_added(sk, hdev, &cp->addr.bdaddr, cp->addr.type, cp->action);
+ bitmap_to_arr32(&supported_flags, hdev->conn_flags,
+ __HCI_CONN_NUM_FLAGS);
device_flags_changed(NULL, hdev, &cp->addr.bdaddr, cp->addr.type,
- SUPPORTED_DEVICE_FLAGS(), current_flags);
+ supported_flags, current_flags);
err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
MGMT_STATUS_SUCCESS, &cp->addr,