tls: support for Inline tls record
Facility to register Inline TLS drivers to net/tls. Setup
TLS_HW_RECORD prot to listen on offload device.
Cases handled
- Inline TLS device exists, setup prot for TLS_HW_RECORD
- Atleast one Inline TLS exists, sets TLS_HW_RECORD.
- If non-inline device establish connection, move to TLS_SW_TX
Signed-off-by: Atul Gupta <atul.gupta@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/tls.h b/include/net/tls.h
index 437a746..3da8e13 100644
--- a/include/net/tls.h
+++ b/include/net/tls.h
@@ -56,6 +56,32 @@
#define TLS_RECORD_TYPE_DATA 0x17
#define TLS_AAD_SPACE_SIZE 13
+#define TLS_DEVICE_NAME_MAX 32
+
+/*
+ * This structure defines the routines for Inline TLS driver.
+ * The following routines are optional and filled with a
+ * null pointer if not defined.
+ *
+ * @name: Its the name of registered Inline tls device
+ * @dev_list: Inline tls device list
+ * int (*feature)(struct tls_device *device);
+ * Called to return Inline TLS driver capability
+ *
+ * int (*hash)(struct tls_device *device, struct sock *sk);
+ * This function sets Inline driver for listen and program
+ * device specific functioanlity as required
+ *
+ * void (*unhash)(struct tls_device *device, struct sock *sk);
+ * This function cleans listen state set by Inline TLS driver
+ */
+struct tls_device {
+ char name[TLS_DEVICE_NAME_MAX];
+ struct list_head dev_list;
+ int (*feature)(struct tls_device *device);
+ int (*hash)(struct tls_device *device, struct sock *sk);
+ void (*unhash)(struct tls_device *device, struct sock *sk);
+};
struct tls_sw_context {
struct crypto_aead *aead_send;
@@ -114,7 +140,7 @@ struct tls_context {
void *priv_ctx;
- u8 conf:2;
+ u8 conf:3;
struct cipher_context tx;
struct cipher_context rx;
@@ -135,6 +161,8 @@ struct tls_context {
int (*getsockopt)(struct sock *sk, int level,
int optname, char __user *optval,
int __user *optlen);
+ int (*hash)(struct sock *sk);
+ void (*unhash)(struct sock *sk);
};
int wait_on_pending_writer(struct sock *sk, long *timeo);
@@ -283,5 +311,7 @@ static inline struct tls_offload_context *tls_offload_ctx(
int tls_proccess_cmsg(struct sock *sk, struct msghdr *msg,
unsigned char *record_type);
+void tls_register_device(struct tls_device *device);
+void tls_unregister_device(struct tls_device *device);
#endif /* _TLS_OFFLOAD_H */