Bluetooth: Add SMP confirmation structs

This patch adds initial support for verifying the confirmation value
that the remote side has sent.

Signed-off-by: Anderson Briglia <anderson.briglia@openbossa.org>
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

1 files changed, 17 insertions, 0 deletions

diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 57fc7d0cadf3..fa22f4aa3b04 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -187,6 +187,8 @@ static void smp_cmd_pairing_req(struct l2cap_conn *conn, struct sk_buff *skb)
 
         BT_DBG("conn %p", conn);
 
+        conn->preq[0] = SMP_CMD_PAIRING_REQ;
+        memcpy(&conn->preq[1], rp, sizeof(*rp));
         skb_pull(skb, sizeof(*rp));
 
         rp->io_capability = 0x00;
@@ -196,17 +198,25 @@ static void smp_cmd_pairing_req(struct l2cap_conn *conn, struct sk_buff *skb)
         rp->resp_key_dist = 0x00;
         rp->auth_req &= (SMP_AUTH_BONDING | SMP_AUTH_MITM);
 
+        conn->prsp[0] = SMP_CMD_PAIRING_RSP;
+        memcpy(&conn->prsp[1], rp, sizeof(*rp));
+
         smp_send_cmd(conn, SMP_CMD_PAIRING_RSP, sizeof(*rp), rp);
 }
 
 static void smp_cmd_pairing_rsp(struct l2cap_conn *conn, struct sk_buff *skb)
 {
+        struct smp_cmd_pairing *rp = (void *) skb->data;
         struct smp_cmd_pairing_confirm cp;
 
         BT_DBG("conn %p", conn);
 
         memset(&cp, 0, sizeof(cp));
 
+        conn->prsp[0] = SMP_CMD_PAIRING_RSP;
+        memcpy(&conn->prsp[1], rp, sizeof(*rp));
+        skb_pull(skb, sizeof(*rp));
+
         smp_send_cmd(conn, SMP_CMD_PAIRING_CONFIRM, sizeof(cp), &cp);
 }
 
@@ -266,6 +276,9 @@ static void smp_cmd_security_req(struct l2cap_conn *conn, struct sk_buff *skb)
         cp.resp_key_dist = 0x00;
         cp.auth_req = rp->auth_req & (SMP_AUTH_BONDING | SMP_AUTH_MITM);
 
+        conn->preq[0] = SMP_CMD_PAIRING_REQ;
+        memcpy(&conn->preq[1], &cp, sizeof(cp));
+
         smp_send_cmd(conn, SMP_CMD_PAIRING_REQ, sizeof(cp), &cp);
 }
 
@@ -303,6 +316,10 @@ int smp_conn_security(struct l2cap_conn *conn, __u8 sec_level)
                 cp.init_key_dist = 0x00;
                 cp.resp_key_dist = 0x00;
                 cp.auth_req = authreq;
+
+                conn->preq[0] = SMP_CMD_PAIRING_REQ;
+                memcpy(&conn->preq[1], &cp, sizeof(cp));
+
                 smp_send_cmd(conn, SMP_CMD_PAIRING_REQ, sizeof(cp), &cp);
         } else {
                 struct smp_cmd_security_req cp;