Bluetooth: Add LE SC support for responding to Pairing Confirm PDU
authorJohan Hedberg <johan.hedberg@intel.com>
Fri, 6 Jun 2014 08:36:38 +0000 (11:36 +0300)
committerMarcel Holtmann <marcel@holtmann.org>
Wed, 3 Dec 2014 15:51:17 +0000 (16:51 +0100)
When LE SC is being used we should always respond to it by sending our
local random number. This patch adds a convenience function for it which
also contains a check for the pre-requisite public key exchange
completion

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
net/bluetooth/smp.c

index 0980b86574bd444531e67999ef7c1371c3ce3769..6207f32d1c6b42e5ffe88c7ea4ce086e05bf6a3b 100644 (file)
@@ -1216,6 +1216,25 @@ static u8 smp_cmd_pairing_rsp(struct l2cap_conn *conn, struct sk_buff *skb)
        return 0;
 }
 
+static u8 sc_check_confirm(struct smp_chan *smp)
+{
+       struct l2cap_conn *conn = smp->conn;
+
+       BT_DBG("");
+
+       /* Public Key exchange must happen before any other steps */
+       if (!test_bit(SMP_FLAG_REMOTE_PK, &smp->flags))
+               return SMP_UNSPECIFIED;
+
+       if (conn->hcon->out) {
+               smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(smp->prnd),
+                            smp->prnd);
+               SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_RANDOM);
+       }
+
+       return 0;
+}
+
 static u8 smp_cmd_pairing_confirm(struct l2cap_conn *conn, struct sk_buff *skb)
 {
        struct l2cap_chan *chan = conn->smp;
@@ -1229,6 +1248,9 @@ static u8 smp_cmd_pairing_confirm(struct l2cap_conn *conn, struct sk_buff *skb)
        memcpy(smp->pcnf, skb->data, sizeof(smp->pcnf));
        skb_pull(skb, sizeof(smp->pcnf));
 
+       if (test_bit(SMP_FLAG_SC, &smp->flags))
+               return sc_check_confirm(smp);
+
        if (conn->hcon->out) {
                smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(smp->prnd),
                             smp->prnd);