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Bluetooth: Implementation of MGMT_OP_SET_BLOCKED_KEYS.

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MGMT command is added to receive the list of blocked keys from
user-space.

The list is used to:
1) Block keys from being distributed by the device during
   the ke distribution phase of SMP.
2) Filter out any keys that were previously saved so
   they are no longer used.

Signed-off-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alain Michaud
2020-01-07 00:43:17 +00:00
committed by Marcel Holtmann
parent 5e6d8401ad
commit 600a87490f
6 changed files with 215 additions and 8 deletions
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10
include/net/bluetooth/hci_core.h
View File

@@ -118,6 +118,13 @@ struct bt_uuid {
u8 svc_hint;
};
struct blocked_key {
struct list_head list;
struct rcu_head rcu;
u8 type;
u8 val[16];
};
struct smp_csrk {
bdaddr_t bdaddr;
u8 bdaddr_type;
@@ -397,6 +404,7 @@ struct hci_dev {
struct list_head le_conn_params;
struct list_head pend_le_conns;
struct list_head pend_le_reports;
struct list_head blocked_keys;
struct hci_dev_stats stat;
@@ -1123,6 +1131,8 @@ struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
u8 addr_type, u8 val[16], bdaddr_t *rpa);
void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
void hci_blocked_keys_clear(struct hci_dev *hdev);
void hci_smp_irks_clear(struct hci_dev *hdev);
bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);

17
include/net/bluetooth/mgmt.h
View File

@@ -654,6 +654,23 @@ struct mgmt_cp_set_phy_confguration {
} __packed;
#define MGMT_SET_PHY_CONFIGURATION_SIZE 4
#define MGMT_OP_SET_BLOCKED_KEYS 0x0046
#define HCI_BLOCKED_KEY_TYPE_LINKKEY 0x00
#define HCI_BLOCKED_KEY_TYPE_LTK 0x01
#define HCI_BLOCKED_KEY_TYPE_IRK 0x02
struct mgmt_blocked_key_info {
__u8 type;
__u8 val[16];
} __packed;
struct mgmt_cp_set_blocked_keys {
__le16 key_count;
struct mgmt_blocked_key_info keys[0];
} __packed;
#define MGMT_OP_SET_BLOCKED_KEYS_SIZE 2
#define MGMT_EV_CMD_COMPLETE 0x0001
struct mgmt_ev_cmd_complete {
__le16 opcode;