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tls: support for Inline tls record

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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>
This commit is contained in:
Atul Gupta 2018-03-31 21:41:52 +05:30 • committed by David S. Miller
parent d4069fe6fc
commit dd0bed1665
2 changed files with 142 additions and 4 deletions
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32
include/net/tls.h
View file

@ -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 */