2 * Copyright (c) 2016-2017, Mellanox Technologies. All rights reserved.
3 * Copyright (c) 2016-2017, Dave Watson <davejwatson@fb.com>. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #ifndef _TLS_OFFLOAD_H
35 #define _TLS_OFFLOAD_H
37 #include <linux/types.h>
38 #include <asm/byteorder.h>
39 #include <linux/crypto.h>
40 #include <linux/socket.h>
41 #include <linux/tcp.h>
42 #include <linux/skmsg.h>
43 #include <linux/mutex.h>
44 #include <linux/netdevice.h>
45 #include <linux/rcupdate.h>
47 #include <net/net_namespace.h>
49 #include <net/strparser.h>
50 #include <crypto/aead.h>
51 #include <uapi/linux/tls.h>
54 /* Maximum data size carried in a TLS record */
55 #define TLS_MAX_PAYLOAD_SIZE ((size_t)1 << 14)
57 #define TLS_HEADER_SIZE 5
58 #define TLS_NONCE_OFFSET TLS_HEADER_SIZE
60 #define TLS_CRYPTO_INFO_READY(info) ((info)->cipher_type)
62 #define TLS_RECORD_TYPE_DATA 0x17
64 #define TLS_AAD_SPACE_SIZE 13
66 #define MAX_IV_SIZE 16
67 #define TLS_MAX_REC_SEQ_SIZE 8
69 /* For AES-CCM, the full 16-bytes of IV is made of '4' fields of given sizes.
71 * IV[16] = b0[1] || implicit nonce[4] || explicit nonce[8] || length[3]
73 * The field 'length' is encoded in field 'b0' as '(length width - 1)'.
74 * Hence b0 contains (3 - 1) = 2.
76 #define TLS_AES_CCM_IV_B0_BYTE 2
78 #define __TLS_INC_STATS(net, field) \
79 __SNMP_INC_STATS((net)->mib.tls_statistics, field)
80 #define TLS_INC_STATS(net, field) \
81 SNMP_INC_STATS((net)->mib.tls_statistics, field)
82 #define TLS_DEC_STATS(net, field) \
83 SNMP_DEC_STATS((net)->mib.tls_statistics, field)
93 /* TLS records are maintained in 'struct tls_rec'. It stores the memory pages
94 * allocated or mapped for each TLS record. After encryption, the records are
95 * stores in a linked list.
98 struct list_head list
;
102 struct sk_msg msg_plaintext
;
103 struct sk_msg msg_encrypted
;
105 /* AAD | msg_plaintext.sg.data | sg_tag */
106 struct scatterlist sg_aead_in
[2];
107 /* AAD | msg_encrypted.sg.data (data contains overhead for hdr & iv & tag) */
108 struct scatterlist sg_aead_out
[2];
111 struct scatterlist sg_content_type
;
113 char aad_space
[TLS_AAD_SPACE_SIZE
];
114 u8 iv_data
[MAX_IV_SIZE
];
115 struct aead_request aead_req
;
125 struct delayed_work work
;
129 struct tls_sw_context_tx
{
130 struct crypto_aead
*aead_send
;
131 struct crypto_wait async_wait
;
132 struct tx_work tx_work
;
133 struct tls_rec
*open_rec
;
134 struct list_head tx_list
;
135 atomic_t encrypt_pending
;
136 /* protect crypto_wait with encrypt_pending */
137 spinlock_t encrypt_compl_lock
;
141 #define BIT_TX_SCHEDULED 0
142 #define BIT_TX_CLOSING 1
143 unsigned long tx_bitmask
;
146 struct tls_sw_context_rx
{
147 struct crypto_aead
*aead_recv
;
148 struct crypto_wait async_wait
;
149 struct strparser strp
;
150 struct sk_buff_head rx_list
; /* list of decrypted 'data' records */
151 void (*saved_data_ready
)(struct sock
*sk
);
153 struct sk_buff
*recv_pkt
;
157 atomic_t decrypt_pending
;
158 /* protect crypto_wait with decrypt_pending*/
159 spinlock_t decrypt_compl_lock
;
163 struct tls_record_info
{
164 struct list_head list
;
168 skb_frag_t frags
[MAX_SKB_FRAGS
];
171 struct tls_offload_context_tx
{
172 struct crypto_aead
*aead_send
;
173 spinlock_t lock
; /* protects records list */
174 struct list_head records_list
;
175 struct tls_record_info
*open_record
;
176 struct tls_record_info
*retransmit_hint
;
178 u64 unacked_record_sn
;
180 struct scatterlist sg_tx_data
[MAX_SKB_FRAGS
];
181 void (*sk_destruct
)(struct sock
*sk
);
182 u8 driver_state
[] __aligned(8);
183 /* The TLS layer reserves room for driver specific state
184 * Currently the belief is that there is not enough
185 * driver specific state to justify another layer of indirection
187 #define TLS_DRIVER_STATE_SIZE_TX 16
190 #define TLS_OFFLOAD_CONTEXT_SIZE_TX \
191 (sizeof(struct tls_offload_context_tx) + TLS_DRIVER_STATE_SIZE_TX)
193 enum tls_context_flags
{
194 /* tls_device_down was called after the netdev went down, device state
195 * was released, and kTLS works in software, even though rx_conf is
196 * still TLS_HW (needed for transition).
198 TLS_RX_DEV_DEGRADED
= 0,
199 /* Unlike RX where resync is driven entirely by the core in TX only
200 * the driver knows when things went out of sync, so we need the flag
203 TLS_TX_SYNC_SCHED
= 1,
204 /* tls_dev_del was called for the RX side, device state was released,
205 * but tls_ctx->netdev might still be kept, because TX-side driver
206 * resources might not be released yet. Used to prevent the second
207 * tls_dev_del call in tls_device_down if it happens simultaneously.
209 TLS_RX_DEV_CLOSED
= 2,
212 struct cipher_context
{
217 union tls_crypto_context
{
218 struct tls_crypto_info info
;
220 struct tls12_crypto_info_aes_gcm_128 aes_gcm_128
;
221 struct tls12_crypto_info_aes_gcm_256 aes_gcm_256
;
222 struct tls12_crypto_info_chacha20_poly1305 chacha20_poly1305
;
226 struct tls_prot_info
{
240 /* read-only cache line */
241 struct tls_prot_info prot_info
;
246 int (*push_pending_record
)(struct sock
*sk
, int flags
);
247 void (*sk_write_space
)(struct sock
*sk
);
252 struct net_device
*netdev
;
255 struct cipher_context tx
;
256 struct cipher_context rx
;
258 struct scatterlist
*partially_sent_record
;
259 u16 partially_sent_offset
;
261 bool in_tcp_sendpages
;
262 bool pending_open_record_frags
;
264 struct mutex tx_lock
; /* protects partially_sent_* fields and
269 /* cache cold stuff */
270 struct proto
*sk_proto
;
273 void (*sk_destruct
)(struct sock
*sk
);
275 union tls_crypto_context crypto_send
;
276 union tls_crypto_context crypto_recv
;
278 struct list_head list
;
283 enum tls_offload_ctx_dir
{
284 TLS_OFFLOAD_CTX_DIR_RX
,
285 TLS_OFFLOAD_CTX_DIR_TX
,
289 int (*tls_dev_add
)(struct net_device
*netdev
, struct sock
*sk
,
290 enum tls_offload_ctx_dir direction
,
291 struct tls_crypto_info
*crypto_info
,
292 u32 start_offload_tcp_sn
);
293 void (*tls_dev_del
)(struct net_device
*netdev
,
294 struct tls_context
*ctx
,
295 enum tls_offload_ctx_dir direction
);
296 int (*tls_dev_resync
)(struct net_device
*netdev
,
297 struct sock
*sk
, u32 seq
, u8
*rcd_sn
,
298 enum tls_offload_ctx_dir direction
);
301 enum tls_offload_sync_type
{
302 TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ
= 0,
303 TLS_OFFLOAD_SYNC_TYPE_CORE_NEXT_HINT
= 1,
304 TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ_ASYNC
= 2,
307 #define TLS_DEVICE_RESYNC_NH_START_IVAL 2
308 #define TLS_DEVICE_RESYNC_NH_MAX_IVAL 128
310 #define TLS_DEVICE_RESYNC_ASYNC_LOGMAX 13
311 struct tls_offload_resync_async
{
315 u32 log
[TLS_DEVICE_RESYNC_ASYNC_LOGMAX
];
318 struct tls_offload_context_rx
{
319 /* sw must be the first member of tls_offload_context_rx */
320 struct tls_sw_context_rx sw
;
321 enum tls_offload_sync_type resync_type
;
322 /* this member is set regardless of resync_type, to avoid branches */
323 u8 resync_nh_reset
:1;
324 /* CORE_NEXT_HINT-only member, but use the hole here */
325 u8 resync_nh_do_now
:1;
327 /* TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ */
329 atomic64_t resync_req
;
331 /* TLS_OFFLOAD_SYNC_TYPE_CORE_NEXT_HINT */
333 u32 decrypted_failed
;
336 /* TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ_ASYNC */
338 struct tls_offload_resync_async
*resync_async
;
341 u8 driver_state
[] __aligned(8);
342 /* The TLS layer reserves room for driver specific state
343 * Currently the belief is that there is not enough
344 * driver specific state to justify another layer of indirection
346 #define TLS_DRIVER_STATE_SIZE_RX 8
349 #define TLS_OFFLOAD_CONTEXT_SIZE_RX \
350 (sizeof(struct tls_offload_context_rx) + TLS_DRIVER_STATE_SIZE_RX)
352 struct tls_context
*tls_ctx_create(struct sock
*sk
);
353 void tls_ctx_free(struct sock
*sk
, struct tls_context
*ctx
);
354 void update_sk_prot(struct sock
*sk
, struct tls_context
*ctx
);
356 int wait_on_pending_writer(struct sock
*sk
, long *timeo
);
357 int tls_sk_query(struct sock
*sk
, int optname
, char __user
*optval
,
359 int tls_sk_attach(struct sock
*sk
, int optname
, char __user
*optval
,
360 unsigned int optlen
);
362 int tls_set_sw_offload(struct sock
*sk
, struct tls_context
*ctx
, int tx
);
363 void tls_sw_strparser_arm(struct sock
*sk
, struct tls_context
*ctx
);
364 void tls_sw_strparser_done(struct tls_context
*tls_ctx
);
365 int tls_sw_sendmsg(struct sock
*sk
, struct msghdr
*msg
, size_t size
);
366 int tls_sw_sendpage_locked(struct sock
*sk
, struct page
*page
,
367 int offset
, size_t size
, int flags
);
368 int tls_sw_sendpage(struct sock
*sk
, struct page
*page
,
369 int offset
, size_t size
, int flags
);
370 void tls_sw_cancel_work_tx(struct tls_context
*tls_ctx
);
371 void tls_sw_release_resources_tx(struct sock
*sk
);
372 void tls_sw_free_ctx_tx(struct tls_context
*tls_ctx
);
373 void tls_sw_free_resources_rx(struct sock
*sk
);
374 void tls_sw_release_resources_rx(struct sock
*sk
);
375 void tls_sw_free_ctx_rx(struct tls_context
*tls_ctx
);
376 int tls_sw_recvmsg(struct sock
*sk
, struct msghdr
*msg
, size_t len
,
377 int nonblock
, int flags
, int *addr_len
);
378 bool tls_sw_stream_read(const struct sock
*sk
);
379 ssize_t
tls_sw_splice_read(struct socket
*sock
, loff_t
*ppos
,
380 struct pipe_inode_info
*pipe
,
381 size_t len
, unsigned int flags
);
383 int tls_device_sendmsg(struct sock
*sk
, struct msghdr
*msg
, size_t size
);
384 int tls_device_sendpage(struct sock
*sk
, struct page
*page
,
385 int offset
, size_t size
, int flags
);
386 int tls_tx_records(struct sock
*sk
, int flags
);
388 struct tls_record_info
*tls_get_record(struct tls_offload_context_tx
*context
,
389 u32 seq
, u64
*p_record_sn
);
391 static inline bool tls_record_is_start_marker(struct tls_record_info
*rec
)
393 return rec
->len
== 0;
396 static inline u32
tls_record_start_seq(struct tls_record_info
*rec
)
398 return rec
->end_seq
- rec
->len
;
401 int tls_push_sg(struct sock
*sk
, struct tls_context
*ctx
,
402 struct scatterlist
*sg
, u16 first_offset
,
404 int tls_push_partial_record(struct sock
*sk
, struct tls_context
*ctx
,
406 void tls_free_partial_record(struct sock
*sk
, struct tls_context
*ctx
);
408 static inline struct tls_msg
*tls_msg(struct sk_buff
*skb
)
410 return (struct tls_msg
*)strp_msg(skb
);
413 static inline bool tls_is_partially_sent_record(struct tls_context
*ctx
)
415 return !!ctx
->partially_sent_record
;
418 static inline bool tls_is_pending_open_record(struct tls_context
*tls_ctx
)
420 return tls_ctx
->pending_open_record_frags
;
423 static inline bool is_tx_ready(struct tls_sw_context_tx
*ctx
)
427 rec
= list_first_entry(&ctx
->tx_list
, struct tls_rec
, list
);
431 return READ_ONCE(rec
->tx_ready
);
434 static inline u16
tls_user_config(struct tls_context
*ctx
, bool tx
)
436 u16 config
= tx
? ctx
->tx_conf
: ctx
->rx_conf
;
440 return TLS_CONF_BASE
;
446 return TLS_CONF_HW_RECORD
;
452 tls_validate_xmit_skb(struct sock
*sk
, struct net_device
*dev
,
453 struct sk_buff
*skb
);
455 tls_validate_xmit_skb_sw(struct sock
*sk
, struct net_device
*dev
,
456 struct sk_buff
*skb
);
458 static inline bool tls_is_sk_tx_device_offloaded(struct sock
*sk
)
460 #ifdef CONFIG_SOCK_VALIDATE_XMIT
461 return sk_fullsock(sk
) &&
462 (smp_load_acquire(&sk
->sk_validate_xmit_skb
) ==
463 &tls_validate_xmit_skb
);
469 static inline void tls_err_abort(struct sock
*sk
, int err
)
475 static inline bool tls_bigint_increment(unsigned char *seq
, int len
)
479 for (i
= len
- 1; i
>= 0; i
--) {
488 static inline void tls_bigint_subtract(unsigned char *seq
, int n
)
493 BUILD_BUG_ON(TLS_MAX_REC_SEQ_SIZE
!= 8);
496 rcd_sn
= be64_to_cpu(*p
);
497 *p
= cpu_to_be64(rcd_sn
- n
);
500 static inline struct tls_context
*tls_get_ctx(const struct sock
*sk
)
502 struct inet_connection_sock
*icsk
= inet_csk(sk
);
504 /* Use RCU on icsk_ulp_data only for sock diag code,
505 * TLS data path doesn't need rcu_dereference().
507 return (__force
void *)icsk
->icsk_ulp_data
;
510 static inline void tls_advance_record_sn(struct sock
*sk
,
511 struct tls_prot_info
*prot
,
512 struct cipher_context
*ctx
)
514 if (tls_bigint_increment(ctx
->rec_seq
, prot
->rec_seq_size
))
515 tls_err_abort(sk
, EBADMSG
);
517 if (prot
->version
!= TLS_1_3_VERSION
&&
518 prot
->cipher_type
!= TLS_CIPHER_CHACHA20_POLY1305
)
519 tls_bigint_increment(ctx
->iv
+ prot
->salt_size
,
523 static inline void tls_fill_prepend(struct tls_context
*ctx
,
525 size_t plaintext_len
,
526 unsigned char record_type
)
528 struct tls_prot_info
*prot
= &ctx
->prot_info
;
529 size_t pkt_len
, iv_size
= prot
->iv_size
;
531 pkt_len
= plaintext_len
+ prot
->tag_size
;
532 if (prot
->version
!= TLS_1_3_VERSION
&&
533 prot
->cipher_type
!= TLS_CIPHER_CHACHA20_POLY1305
) {
536 memcpy(buf
+ TLS_NONCE_OFFSET
,
537 ctx
->tx
.iv
+ prot
->salt_size
, iv_size
);
540 /* we cover nonce explicit here as well, so buf should be of
541 * size KTLS_DTLS_HEADER_SIZE + KTLS_DTLS_NONCE_EXPLICIT_SIZE
543 buf
[0] = prot
->version
== TLS_1_3_VERSION
?
544 TLS_RECORD_TYPE_DATA
: record_type
;
545 /* Note that VERSION must be TLS_1_2 for both TLS1.2 and TLS1.3 */
546 buf
[1] = TLS_1_2_VERSION_MINOR
;
547 buf
[2] = TLS_1_2_VERSION_MAJOR
;
548 /* we can use IV for nonce explicit according to spec */
549 buf
[3] = pkt_len
>> 8;
550 buf
[4] = pkt_len
& 0xFF;
553 static inline void tls_make_aad(char *buf
,
555 char *record_sequence
,
556 unsigned char record_type
,
557 struct tls_prot_info
*prot
)
559 if (prot
->version
!= TLS_1_3_VERSION
) {
560 memcpy(buf
, record_sequence
, prot
->rec_seq_size
);
563 size
+= prot
->tag_size
;
566 buf
[0] = prot
->version
== TLS_1_3_VERSION
?
567 TLS_RECORD_TYPE_DATA
: record_type
;
568 buf
[1] = TLS_1_2_VERSION_MAJOR
;
569 buf
[2] = TLS_1_2_VERSION_MINOR
;
571 buf
[4] = size
& 0xFF;
574 static inline void xor_iv_with_seq(struct tls_prot_info
*prot
, char *iv
, char *seq
)
578 if (prot
->version
== TLS_1_3_VERSION
||
579 prot
->cipher_type
== TLS_CIPHER_CHACHA20_POLY1305
) {
580 for (i
= 0; i
< 8; i
++)
586 static inline struct tls_sw_context_rx
*tls_sw_ctx_rx(
587 const struct tls_context
*tls_ctx
)
589 return (struct tls_sw_context_rx
*)tls_ctx
->priv_ctx_rx
;
592 static inline struct tls_sw_context_tx
*tls_sw_ctx_tx(
593 const struct tls_context
*tls_ctx
)
595 return (struct tls_sw_context_tx
*)tls_ctx
->priv_ctx_tx
;
598 static inline struct tls_offload_context_tx
*
599 tls_offload_ctx_tx(const struct tls_context
*tls_ctx
)
601 return (struct tls_offload_context_tx
*)tls_ctx
->priv_ctx_tx
;
604 static inline bool tls_sw_has_ctx_tx(const struct sock
*sk
)
606 struct tls_context
*ctx
= tls_get_ctx(sk
);
610 return !!tls_sw_ctx_tx(ctx
);
613 static inline bool tls_sw_has_ctx_rx(const struct sock
*sk
)
615 struct tls_context
*ctx
= tls_get_ctx(sk
);
619 return !!tls_sw_ctx_rx(ctx
);
622 void tls_sw_write_space(struct sock
*sk
, struct tls_context
*ctx
);
623 void tls_device_write_space(struct sock
*sk
, struct tls_context
*ctx
);
625 static inline struct tls_offload_context_rx
*
626 tls_offload_ctx_rx(const struct tls_context
*tls_ctx
)
628 return (struct tls_offload_context_rx
*)tls_ctx
->priv_ctx_rx
;
631 #if IS_ENABLED(CONFIG_TLS_DEVICE)
632 static inline void *__tls_driver_ctx(struct tls_context
*tls_ctx
,
633 enum tls_offload_ctx_dir direction
)
635 if (direction
== TLS_OFFLOAD_CTX_DIR_TX
)
636 return tls_offload_ctx_tx(tls_ctx
)->driver_state
;
638 return tls_offload_ctx_rx(tls_ctx
)->driver_state
;
642 tls_driver_ctx(const struct sock
*sk
, enum tls_offload_ctx_dir direction
)
644 return __tls_driver_ctx(tls_get_ctx(sk
), direction
);
648 #define RESYNC_REQ BIT(0)
649 #define RESYNC_REQ_ASYNC BIT(1)
650 /* The TLS context is valid until sk_destruct is called */
651 static inline void tls_offload_rx_resync_request(struct sock
*sk
, __be32 seq
)
653 struct tls_context
*tls_ctx
= tls_get_ctx(sk
);
654 struct tls_offload_context_rx
*rx_ctx
= tls_offload_ctx_rx(tls_ctx
);
656 atomic64_set(&rx_ctx
->resync_req
, ((u64
)ntohl(seq
) << 32) | RESYNC_REQ
);
659 /* Log all TLS record header TCP sequences in [seq, seq+len] */
661 tls_offload_rx_resync_async_request_start(struct sock
*sk
, __be32 seq
, u16 len
)
663 struct tls_context
*tls_ctx
= tls_get_ctx(sk
);
664 struct tls_offload_context_rx
*rx_ctx
= tls_offload_ctx_rx(tls_ctx
);
666 atomic64_set(&rx_ctx
->resync_async
->req
, ((u64
)ntohl(seq
) << 32) |
667 ((u64
)len
<< 16) | RESYNC_REQ
| RESYNC_REQ_ASYNC
);
668 rx_ctx
->resync_async
->loglen
= 0;
669 rx_ctx
->resync_async
->rcd_delta
= 0;
673 tls_offload_rx_resync_async_request_end(struct sock
*sk
, __be32 seq
)
675 struct tls_context
*tls_ctx
= tls_get_ctx(sk
);
676 struct tls_offload_context_rx
*rx_ctx
= tls_offload_ctx_rx(tls_ctx
);
678 atomic64_set(&rx_ctx
->resync_async
->req
,
679 ((u64
)ntohl(seq
) << 32) | RESYNC_REQ
);
683 tls_offload_rx_resync_set_type(struct sock
*sk
, enum tls_offload_sync_type type
)
685 struct tls_context
*tls_ctx
= tls_get_ctx(sk
);
687 tls_offload_ctx_rx(tls_ctx
)->resync_type
= type
;
690 /* Driver's seq tracking has to be disabled until resync succeeded */
691 static inline bool tls_offload_tx_resync_pending(struct sock
*sk
)
693 struct tls_context
*tls_ctx
= tls_get_ctx(sk
);
696 ret
= test_bit(TLS_TX_SYNC_SCHED
, &tls_ctx
->flags
);
697 smp_mb__after_atomic();
701 int __net_init
tls_proc_init(struct net
*net
);
702 void __net_exit
tls_proc_fini(struct net
*net
);
704 int tls_proccess_cmsg(struct sock
*sk
, struct msghdr
*msg
,
705 unsigned char *record_type
);
706 int decrypt_skb(struct sock
*sk
, struct sk_buff
*skb
,
707 struct scatterlist
*sgout
);
708 struct sk_buff
*tls_encrypt_skb(struct sk_buff
*skb
);
710 int tls_sw_fallback_init(struct sock
*sk
,
711 struct tls_offload_context_tx
*offload_ctx
,
712 struct tls_crypto_info
*crypto_info
);
714 #ifdef CONFIG_TLS_DEVICE
715 void tls_device_init(void);
716 void tls_device_cleanup(void);
717 void tls_device_sk_destruct(struct sock
*sk
);
718 int tls_set_device_offload(struct sock
*sk
, struct tls_context
*ctx
);
719 void tls_device_free_resources_tx(struct sock
*sk
);
720 int tls_set_device_offload_rx(struct sock
*sk
, struct tls_context
*ctx
);
721 void tls_device_offload_cleanup_rx(struct sock
*sk
);
722 void tls_device_rx_resync_new_rec(struct sock
*sk
, u32 rcd_len
, u32 seq
);
723 void tls_offload_tx_resync_request(struct sock
*sk
, u32 got_seq
, u32 exp_seq
);
724 int tls_device_decrypted(struct sock
*sk
, struct tls_context
*tls_ctx
,
725 struct sk_buff
*skb
, struct strp_msg
*rxm
);
727 static inline bool tls_is_sk_rx_device_offloaded(struct sock
*sk
)
729 if (!sk_fullsock(sk
) ||
730 smp_load_acquire(&sk
->sk_destruct
) != tls_device_sk_destruct
)
732 return tls_get_ctx(sk
)->rx_conf
== TLS_HW
;
735 static inline void tls_device_init(void) {}
736 static inline void tls_device_cleanup(void) {}
739 tls_set_device_offload(struct sock
*sk
, struct tls_context
*ctx
)
744 static inline void tls_device_free_resources_tx(struct sock
*sk
) {}
747 tls_set_device_offload_rx(struct sock
*sk
, struct tls_context
*ctx
)
752 static inline void tls_device_offload_cleanup_rx(struct sock
*sk
) {}
754 tls_device_rx_resync_new_rec(struct sock
*sk
, u32 rcd_len
, u32 seq
) {}
757 tls_device_decrypted(struct sock
*sk
, struct tls_context
*tls_ctx
,
758 struct sk_buff
*skb
, struct strp_msg
*rxm
)
763 #endif /* _TLS_OFFLOAD_H */