Bluetooth: Move SMP crypto functions to a workqueue

The function crypto_blkcipher_setkey() called by smp_e()
can sleep, so all the crypto work has to be moved to
hci_dev workqueue.

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

1 files changed, 8 insertions, 1 deletions

diff --git a/include/net/bluetooth/smp.h b/include/net/bluetooth/smp.h
index a9ba72c1dc79..15b97d549441 100644
--- a/include/net/bluetooth/smp.h
+++ b/include/net/bluetooth/smp.h
@@ -116,13 +116,18 @@ struct smp_cmd_security_req {
 #define SMP_MAX_ENC_KEY_SIZE            16
 
 struct smp_chan {
+        struct l2cap_conn *conn;
         u8              preq[7]; /* SMP Pairing Request */
         u8              prsp[7]; /* SMP Pairing Response */
-        u8              prnd[16]; /* SMP Pairing Random */
+        u8              prnd[16]; /* SMP Pairing Random (local) */
+        u8              rrnd[16]; /* SMP Pairing Random (remote) */
         u8              pcnf[16]; /* SMP Pairing Confirm */
         u8              tk[16]; /* SMP Temporary Key */
         u8              smp_key_size;
         struct crypto_blkcipher *tfm;
+        struct work_struct confirm;
+        struct work_struct random;
+
 };
 
 /* SMP Commands */
@@ -130,4 +135,6 @@ int smp_conn_security(struct l2cap_conn *conn, __u8 sec_level);
 int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb);
 int smp_distribute_keys(struct l2cap_conn *conn, __u8 force);
 
+void smp_chan_destroy(struct l2cap_conn *conn);
+
 #endif /* __SMP_H */