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Bluetooth: Update New CSRK event to match latest specification

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The 'master' parameter of the New CSRK event was recently renamed to
'type', with the old values kept for backwards compatibility as
unauthenticated local/remote keys. This patch updates the code to take
into account the two new (authenticated) values and ensures they get
used based on the security level of the connection that the respective
keys get distributed over.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2015-02-27 10:11:13 +02:00 committed by Marcel Holtmann
parent 03f310efd4
commit 4cd3928a8b
4 changed files with 16 additions and 5 deletions
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2
include/net/bluetooth/hci_core.h
View File

@ -108,7 +108,7 @@ struct bt_uuid {
struct smp_csrk {
bdaddr_t bdaddr;
u8 bdaddr_type;
u8 master;
u8 type;
u8 val[16];
};

7
include/net/bluetooth/mgmt.h
View File

@ -647,9 +647,14 @@ struct mgmt_ev_new_irk {
struct mgmt_irk_info irk;
} __packed;
#define MGMT_CSRK_LOCAL_UNAUTHENTICATED 0x00
#define MGMT_CSRK_REMOTE_UNAUTHENTICATED 0x01
#define MGMT_CSRK_LOCAL_AUTHENTICATED 0x02
#define MGMT_CSRK_REMOTE_AUTHENTICATED 0x03
struct mgmt_csrk_info {
struct mgmt_addr_info addr;
__u8 master;
__u8 type;
__u8 val[16];
} __packed;

2
net/bluetooth/mgmt.c
View File

@ -6664,7 +6664,7 @@ void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
bacpy(&ev.key.addr.bdaddr, &csrk->bdaddr);
ev.key.addr.type = link_to_bdaddr(LE_LINK, csrk->bdaddr_type);
ev.key.master = csrk->master;
ev.key.type = csrk->type;
memcpy(ev.key.val, csrk->val, sizeof(csrk->val));
mgmt_event(MGMT_EV_NEW_CSRK, hdev, &ev, sizeof(ev), NULL);

10
net/bluetooth/smp.c
View File

@ -1252,7 +1252,10 @@ static void smp_distribute_keys(struct smp_chan *smp)
csrk = kzalloc(sizeof(*csrk), GFP_KERNEL);
if (csrk) {
csrk->master = 0x00;
if (hcon->sec_level > BT_SECURITY_MEDIUM)
csrk->type = MGMT_CSRK_LOCAL_AUTHENTICATED;
else
csrk->type = MGMT_CSRK_LOCAL_UNAUTHENTICATED;
memcpy(csrk->val, sign.csrk, sizeof(csrk->val));
}
smp->slave_csrk = csrk;
@ -2352,7 +2355,10 @@ static int smp_cmd_sign_info(struct l2cap_conn *conn, struct sk_buff *skb)
csrk = kzalloc(sizeof(*csrk), GFP_KERNEL);
if (csrk) {
csrk->master = 0x01;
if (conn->hcon->sec_level > BT_SECURITY_MEDIUM)
csrk->type = MGMT_CSRK_REMOTE_AUTHENTICATED;
else
csrk->type = MGMT_CSRK_REMOTE_UNAUTHENTICATED;
memcpy(csrk->val, rp->csrk, sizeof(csrk->val));
}
smp->csrk = csrk;