The connection signature resolving key (CSRK) can be used to allow
signed write requests over the attribute protocol. This command
provides userspace with the ability to configure such a key that
can be distributed over SMP if requested.
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 1 +
include/net/bluetooth/mgmt.h | 6 ++++++
net/bluetooth/mgmt.c | 28 ++++++++++++++++++++++++++++
3 files changed, 35 insertions(+)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index dbb788e4f265..dd6e58062e34 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -187,6 +187,7 @@ struct hci_dev {
__u16 le_conn_min_interval;
__u16 le_conn_max_interval;
__u8 ssp_debug_mode;
+ __u8 csrk[16];
__u16 devid_source;
__u16 devid_vendor;
diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index 0326648fd799..d79f81c04cb3 100644
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -409,6 +409,12 @@ struct mgmt_cp_load_irks {
} __packed;
#define MGMT_LOAD_IRKS_SIZE 2
+#define MGMT_OP_SET_CSRK 0x0031
+struct mgmt_cp_set_csrk {
+ __u8 val[16];
+} __packed;
+#define MGMT_SET_CSRK_SIZE 16
+
#define MGMT_EV_CMD_COMPLETE 0x0001
struct mgmt_ev_cmd_complete {
__le16 opcode;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index f2397e7ad385..4ccb3baaa4a2 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -83,6 +83,7 @@ static const u16 mgmt_commands[] = {
MGMT_OP_SET_DEBUG_KEYS,
MGMT_OP_SET_PRIVACY,
MGMT_OP_LOAD_IRKS,
+ MGMT_OP_SET_CSRK,
};
static const u16 mgmt_events[] = {
@@ -4554,6 +4555,32 @@ static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev,
return err;
}
+static int set_csrk(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
+{
+ struct mgmt_cp_set_csrk *cp = data;
+ int err;
+
+ BT_DBG("%s", hdev->name);
+
+ if (!lmp_le_capable(hdev))
+ return cmd_status(sk, hdev->id, MGMT_OP_SET_CSRK,
+ MGMT_STATUS_NOT_SUPPORTED);
+
+ if (hdev_is_powered(hdev))
+ return cmd_status(sk, hdev->id, MGMT_OP_SET_CSRK,
+ MGMT_STATUS_REJECTED);
+
+ hci_dev_lock(hdev);
+
+ memcpy(hdev->csrk, cp->val, 16);
+
+ err = cmd_complete(sk, hdev->id, MGMT_OP_SET_CSRK, 0, NULL, 0);
+
+ hci_dev_unlock(hdev);
+
+ return err;
+}
+
static const struct mgmt_handler {
int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
u16 data_len);
@@ -4609,6 +4636,7 @@ static const struct mgmt_handler {
{ set_debug_keys, false, MGMT_SETTING_SIZE },
{ set_privacy, false, MGMT_SET_PRIVACY_SIZE },
{ load_irks, true, MGMT_LOAD_IRKS_SIZE },
+ { set_csrk, false, MGMT_SET_CSRK_SIZE },
};
--
1.8.5.3
--
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