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authorJohan Hedberg <johan.hedberg@intel.com>2014-10-26 21:19:10 +0100
committerMarcel Holtmann <marcel@holtmann.org>2014-12-03 16:51:21 +0100
commit02b05bd8b0a632e9a26795bced8f19ca6a5f7079 (patch)
tree9f4bc255c0d95e21409ec0c091cc42d904002054 /net/bluetooth
parent86df9200c77f46a246ca4a78949887eb6dbde091 (diff)
downloadlinux-02b05bd8b0a632e9a26795bced8f19ca6a5f7079.tar.bz2
Bluetooth: Set SMP OOB flag if OOB data is available
If we have OOB data available for the remote device in question we should set the OOB flag appropriately in the SMP pairing request or response. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
-rw-r--r--net/bluetooth/smp.c31
1 files changed, 25 insertions, 6 deletions
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 589e015c5125..0c2214a41816 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -57,6 +57,7 @@ enum {
SMP_FLAG_DEBUG_KEY,
SMP_FLAG_WAIT_USER,
SMP_FLAG_DHKEY_PENDING,
+ SMP_FLAG_OOB,
};
struct smp_chan {
@@ -562,7 +563,7 @@ static void build_pairing_cmd(struct l2cap_conn *conn,
struct smp_chan *smp = chan->data;
struct hci_conn *hcon = conn->hcon;
struct hci_dev *hdev = hcon->hdev;
- u8 local_dist = 0, remote_dist = 0;
+ u8 local_dist = 0, remote_dist = 0, oob_flag = SMP_OOB_NOT_PRESENT;
if (test_bit(HCI_BONDABLE, &conn->hcon->hdev->dev_flags)) {
local_dist = SMP_DIST_ENC_KEY | SMP_DIST_SIGN;
@@ -578,19 +579,37 @@ static void build_pairing_cmd(struct l2cap_conn *conn,
if (test_bit(HCI_PRIVACY, &hdev->dev_flags))
local_dist |= SMP_DIST_ID_KEY;
- if (test_bit(HCI_SC_ENABLED, &hdev->dev_flags)) {
- if ((authreq & SMP_AUTH_SC) &&
- test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {
+ if (test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
+ (authreq & SMP_AUTH_SC)) {
+ struct oob_data *oob_data;
+ u8 bdaddr_type;
+
+ if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {
local_dist |= SMP_DIST_LINK_KEY;
remote_dist |= SMP_DIST_LINK_KEY;
}
+
+ if (hcon->dst_type == ADDR_LE_DEV_PUBLIC)
+ bdaddr_type = BDADDR_LE_PUBLIC;
+ else
+ bdaddr_type = BDADDR_LE_RANDOM;
+
+ oob_data = hci_find_remote_oob_data(hdev, &hcon->dst,
+ bdaddr_type);
+ if (oob_data) {
+ set_bit(SMP_FLAG_OOB, &smp->flags);
+ oob_flag = SMP_OOB_PRESENT;
+ memcpy(smp->rrnd, oob_data->rand256, 16);
+ memcpy(smp->pcnf, oob_data->hash256, 16);
+ }
+
} else {
authreq &= ~SMP_AUTH_SC;
}
if (rsp == NULL) {
req->io_capability = conn->hcon->io_capability;
- req->oob_flag = SMP_OOB_NOT_PRESENT;
+ req->oob_flag = oob_flag;
req->max_key_size = SMP_MAX_ENC_KEY_SIZE;
req->init_key_dist = local_dist;
req->resp_key_dist = remote_dist;
@@ -601,7 +620,7 @@ static void build_pairing_cmd(struct l2cap_conn *conn,
}
rsp->io_capability = conn->hcon->io_capability;
- rsp->oob_flag = SMP_OOB_NOT_PRESENT;
+ rsp->oob_flag = oob_flag;
rsp->max_key_size = SMP_MAX_ENC_KEY_SIZE;
rsp->init_key_dist = req->init_key_dist & remote_dist;
rsp->resp_key_dist = req->resp_key_dist & local_dist;