]>
Commit | Line | Data |
---|---|---|
3c4d7559 DW |
1 | /* |
2 | * Copyright (c) 2016-2017, Mellanox Technologies. All rights reserved. | |
3 | * Copyright (c) 2016-2017, Dave Watson <davejwatson@fb.com>. All rights reserved. | |
4 | * | |
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: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or | |
12 | * without modification, are permitted provided that the following | |
13 | * conditions are met: | |
14 | * | |
15 | * - Redistributions of source code must retain the above | |
16 | * copyright notice, this list of conditions and the following | |
17 | * disclaimer. | |
18 | * | |
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. | |
23 | * | |
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 | |
31 | * SOFTWARE. | |
32 | */ | |
33 | ||
34 | #ifndef _TLS_OFFLOAD_H | |
35 | #define _TLS_OFFLOAD_H | |
36 | ||
37 | #include <linux/types.h> | |
b9f3eb49 | 38 | #include <asm/byteorder.h> |
a54667f6 | 39 | #include <linux/crypto.h> |
b9f3eb49 DL |
40 | #include <linux/socket.h> |
41 | #include <linux/tcp.h> | |
d829e9c4 DB |
42 | #include <linux/skmsg.h> |
43 | ||
b9f3eb49 | 44 | #include <net/tcp.h> |
c46234eb | 45 | #include <net/strparser.h> |
a42055e8 | 46 | #include <crypto/aead.h> |
3c4d7559 DW |
47 | #include <uapi/linux/tls.h> |
48 | ||
49 | ||
50 | /* Maximum data size carried in a TLS record */ | |
51 | #define TLS_MAX_PAYLOAD_SIZE ((size_t)1 << 14) | |
52 | ||
53 | #define TLS_HEADER_SIZE 5 | |
54 | #define TLS_NONCE_OFFSET TLS_HEADER_SIZE | |
55 | ||
56 | #define TLS_CRYPTO_INFO_READY(info) ((info)->cipher_type) | |
57 | ||
58 | #define TLS_RECORD_TYPE_DATA 0x17 | |
59 | ||
60 | #define TLS_AAD_SPACE_SIZE 13 | |
dd0bed16 AG |
61 | #define TLS_DEVICE_NAME_MAX 32 |
62 | ||
63 | /* | |
64 | * This structure defines the routines for Inline TLS driver. | |
65 | * The following routines are optional and filled with a | |
66 | * null pointer if not defined. | |
67 | * | |
68 | * @name: Its the name of registered Inline tls device | |
69 | * @dev_list: Inline tls device list | |
70 | * int (*feature)(struct tls_device *device); | |
71 | * Called to return Inline TLS driver capability | |
72 | * | |
73 | * int (*hash)(struct tls_device *device, struct sock *sk); | |
74 | * This function sets Inline driver for listen and program | |
75 | * device specific functioanlity as required | |
76 | * | |
77 | * void (*unhash)(struct tls_device *device, struct sock *sk); | |
78 | * This function cleans listen state set by Inline TLS driver | |
df9d4a17 AG |
79 | * |
80 | * void (*release)(struct kref *kref); | |
81 | * Release the registered device and allocated resources | |
82 | * @kref: Number of reference to tls_device | |
dd0bed16 AG |
83 | */ |
84 | struct tls_device { | |
85 | char name[TLS_DEVICE_NAME_MAX]; | |
86 | struct list_head dev_list; | |
87 | int (*feature)(struct tls_device *device); | |
88 | int (*hash)(struct tls_device *device, struct sock *sk); | |
89 | void (*unhash)(struct tls_device *device, struct sock *sk); | |
df9d4a17 AG |
90 | void (*release)(struct kref *kref); |
91 | struct kref kref; | |
dd0bed16 | 92 | }; |
3c4d7559 | 93 | |
4799ac81 BP |
94 | enum { |
95 | TLS_BASE, | |
96 | TLS_SW, | |
97 | #ifdef CONFIG_TLS_DEVICE | |
98 | TLS_HW, | |
99 | #endif | |
100 | TLS_HW_RECORD, | |
101 | TLS_NUM_CONFIG, | |
102 | }; | |
103 | ||
a42055e8 VG |
104 | /* TLS records are maintained in 'struct tls_rec'. It stores the memory pages |
105 | * allocated or mapped for each TLS record. After encryption, the records are | |
106 | * stores in a linked list. | |
107 | */ | |
108 | struct tls_rec { | |
109 | struct list_head list; | |
9932a29a | 110 | int tx_ready; |
a42055e8 | 111 | int tx_flags; |
4e6d4720 | 112 | int inplace_crypto; |
3c4d7559 | 113 | |
d829e9c4 DB |
114 | struct sk_msg msg_plaintext; |
115 | struct sk_msg msg_encrypted; | |
a42055e8 | 116 | |
d829e9c4 DB |
117 | /* AAD | msg_plaintext.sg.data | sg_tag */ |
118 | struct scatterlist sg_aead_in[2]; | |
119 | /* AAD | msg_encrypted.sg.data (data contains overhead for hdr & iv & tag) */ | |
120 | struct scatterlist sg_aead_out[2]; | |
a42055e8 | 121 | |
130b392c DW |
122 | char content_type; |
123 | struct scatterlist sg_content_type; | |
124 | ||
a42055e8 | 125 | char aad_space[TLS_AAD_SPACE_SIZE]; |
32eb67b9 DW |
126 | u8 iv_data[TLS_CIPHER_AES_GCM_128_IV_SIZE + |
127 | TLS_CIPHER_AES_GCM_128_SALT_SIZE]; | |
a42055e8 VG |
128 | struct aead_request aead_req; |
129 | u8 aead_req_ctx[]; | |
130 | }; | |
131 | ||
132 | struct tx_work { | |
133 | struct delayed_work work; | |
134 | struct sock *sk; | |
135 | }; | |
136 | ||
137 | struct tls_sw_context_tx { | |
138 | struct crypto_aead *aead_send; | |
139 | struct crypto_wait async_wait; | |
140 | struct tx_work tx_work; | |
141 | struct tls_rec *open_rec; | |
9932a29a | 142 | struct list_head tx_list; |
a42055e8 VG |
143 | atomic_t encrypt_pending; |
144 | int async_notify; | |
145 | ||
146 | #define BIT_TX_SCHEDULED 0 | |
147 | unsigned long tx_bitmask; | |
3c4d7559 DW |
148 | }; |
149 | ||
f66de3ee BP |
150 | struct tls_sw_context_rx { |
151 | struct crypto_aead *aead_recv; | |
152 | struct crypto_wait async_wait; | |
f66de3ee | 153 | struct strparser strp; |
692d7b5d | 154 | struct sk_buff_head rx_list; /* list of decrypted 'data' records */ |
f66de3ee | 155 | void (*saved_data_ready)(struct sock *sk); |
924ad65e | 156 | |
f66de3ee BP |
157 | struct sk_buff *recv_pkt; |
158 | u8 control; | |
692d7b5d | 159 | int async_capable; |
f66de3ee | 160 | bool decrypted; |
94524d8f VG |
161 | atomic_t decrypt_pending; |
162 | bool async_notify; | |
163 | }; | |
164 | ||
e8f69799 IL |
165 | struct tls_record_info { |
166 | struct list_head list; | |
167 | u32 end_seq; | |
168 | int len; | |
169 | int num_frags; | |
170 | skb_frag_t frags[MAX_SKB_FRAGS]; | |
171 | }; | |
172 | ||
d80a1b9d | 173 | struct tls_offload_context_tx { |
e8f69799 IL |
174 | struct crypto_aead *aead_send; |
175 | spinlock_t lock; /* protects records list */ | |
176 | struct list_head records_list; | |
177 | struct tls_record_info *open_record; | |
178 | struct tls_record_info *retransmit_hint; | |
179 | u64 hint_record_sn; | |
180 | u64 unacked_record_sn; | |
181 | ||
182 | struct scatterlist sg_tx_data[MAX_SKB_FRAGS]; | |
183 | void (*sk_destruct)(struct sock *sk); | |
184 | u8 driver_state[]; | |
185 | /* The TLS layer reserves room for driver specific state | |
186 | * Currently the belief is that there is not enough | |
187 | * driver specific state to justify another layer of indirection | |
188 | */ | |
189 | #define TLS_DRIVER_STATE_SIZE (max_t(size_t, 8, sizeof(void *))) | |
190 | }; | |
191 | ||
d80a1b9d BP |
192 | #define TLS_OFFLOAD_CONTEXT_SIZE_TX \ |
193 | (ALIGN(sizeof(struct tls_offload_context_tx), sizeof(void *)) + \ | |
e8f69799 IL |
194 | TLS_DRIVER_STATE_SIZE) |
195 | ||
3c4d7559 DW |
196 | enum { |
197 | TLS_PENDING_CLOSED_RECORD | |
198 | }; | |
199 | ||
dbe42559 DW |
200 | struct cipher_context { |
201 | u16 prepend_size; | |
202 | u16 tag_size; | |
203 | u16 overhead_size; | |
204 | u16 iv_size; | |
205 | char *iv; | |
206 | u16 rec_seq_size; | |
207 | char *rec_seq; | |
a2ef9b6a | 208 | u16 aad_size; |
130b392c | 209 | u16 tail_size; |
dbe42559 DW |
210 | }; |
211 | ||
86029d10 SD |
212 | union tls_crypto_context { |
213 | struct tls_crypto_info info; | |
fb99bce7 DW |
214 | union { |
215 | struct tls12_crypto_info_aes_gcm_128 aes_gcm_128; | |
216 | struct tls12_crypto_info_aes_gcm_256 aes_gcm_256; | |
217 | }; | |
86029d10 SD |
218 | }; |
219 | ||
3c4d7559 | 220 | struct tls_context { |
86029d10 SD |
221 | union tls_crypto_context crypto_send; |
222 | union tls_crypto_context crypto_recv; | |
3c4d7559 | 223 | |
f66de3ee BP |
224 | struct list_head list; |
225 | struct net_device *netdev; | |
226 | refcount_t refcount; | |
227 | ||
228 | void *priv_ctx_tx; | |
229 | void *priv_ctx_rx; | |
3c4d7559 | 230 | |
f66de3ee BP |
231 | u8 tx_conf:3; |
232 | u8 rx_conf:3; | |
6d88207f | 233 | |
dbe42559 | 234 | struct cipher_context tx; |
c46234eb | 235 | struct cipher_context rx; |
3c4d7559 DW |
236 | |
237 | struct scatterlist *partially_sent_record; | |
238 | u16 partially_sent_offset; | |
a42055e8 | 239 | |
3c4d7559 | 240 | unsigned long flags; |
c212d2c7 | 241 | bool in_tcp_sendpages; |
d829e9c4 | 242 | bool pending_open_record_frags; |
3c4d7559 | 243 | |
3c4d7559 | 244 | int (*push_pending_record)(struct sock *sk, int flags); |
3c4d7559 DW |
245 | |
246 | void (*sk_write_space)(struct sock *sk); | |
4799ac81 | 247 | void (*sk_destruct)(struct sock *sk); |
3c4d7559 DW |
248 | void (*sk_proto_close)(struct sock *sk, long timeout); |
249 | ||
250 | int (*setsockopt)(struct sock *sk, int level, | |
251 | int optname, char __user *optval, | |
252 | unsigned int optlen); | |
253 | int (*getsockopt)(struct sock *sk, int level, | |
254 | int optname, char __user *optval, | |
255 | int __user *optlen); | |
dd0bed16 AG |
256 | int (*hash)(struct sock *sk); |
257 | void (*unhash)(struct sock *sk); | |
3c4d7559 DW |
258 | }; |
259 | ||
4799ac81 BP |
260 | struct tls_offload_context_rx { |
261 | /* sw must be the first member of tls_offload_context_rx */ | |
262 | struct tls_sw_context_rx sw; | |
263 | atomic64_t resync_req; | |
264 | u8 driver_state[]; | |
265 | /* The TLS layer reserves room for driver specific state | |
266 | * Currently the belief is that there is not enough | |
267 | * driver specific state to justify another layer of indirection | |
268 | */ | |
269 | }; | |
270 | ||
271 | #define TLS_OFFLOAD_CONTEXT_SIZE_RX \ | |
272 | (ALIGN(sizeof(struct tls_offload_context_rx), sizeof(void *)) + \ | |
273 | TLS_DRIVER_STATE_SIZE) | |
274 | ||
3c4d7559 DW |
275 | int wait_on_pending_writer(struct sock *sk, long *timeo); |
276 | int tls_sk_query(struct sock *sk, int optname, char __user *optval, | |
277 | int __user *optlen); | |
278 | int tls_sk_attach(struct sock *sk, int optname, char __user *optval, | |
279 | unsigned int optlen); | |
280 | ||
c46234eb | 281 | int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx); |
3c4d7559 DW |
282 | int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size); |
283 | int tls_sw_sendpage(struct sock *sk, struct page *page, | |
284 | int offset, size_t size, int flags); | |
285 | void tls_sw_close(struct sock *sk, long timeout); | |
f66de3ee BP |
286 | void tls_sw_free_resources_tx(struct sock *sk); |
287 | void tls_sw_free_resources_rx(struct sock *sk); | |
39f56e1a | 288 | void tls_sw_release_resources_rx(struct sock *sk); |
c46234eb DW |
289 | int tls_sw_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, |
290 | int nonblock, int flags, int *addr_len); | |
924ad65e | 291 | bool tls_sw_stream_read(const struct sock *sk); |
c46234eb DW |
292 | ssize_t tls_sw_splice_read(struct socket *sock, loff_t *ppos, |
293 | struct pipe_inode_info *pipe, | |
294 | size_t len, unsigned int flags); | |
3c4d7559 | 295 | |
e8f69799 IL |
296 | int tls_set_device_offload(struct sock *sk, struct tls_context *ctx); |
297 | int tls_device_sendmsg(struct sock *sk, struct msghdr *msg, size_t size); | |
298 | int tls_device_sendpage(struct sock *sk, struct page *page, | |
299 | int offset, size_t size, int flags); | |
300 | void tls_device_sk_destruct(struct sock *sk); | |
301 | void tls_device_init(void); | |
302 | void tls_device_cleanup(void); | |
a42055e8 | 303 | int tls_tx_records(struct sock *sk, int flags); |
e8f69799 | 304 | |
d80a1b9d | 305 | struct tls_record_info *tls_get_record(struct tls_offload_context_tx *context, |
e8f69799 IL |
306 | u32 seq, u64 *p_record_sn); |
307 | ||
308 | static inline bool tls_record_is_start_marker(struct tls_record_info *rec) | |
309 | { | |
310 | return rec->len == 0; | |
311 | } | |
312 | ||
313 | static inline u32 tls_record_start_seq(struct tls_record_info *rec) | |
314 | { | |
315 | return rec->end_seq - rec->len; | |
316 | } | |
3c4d7559 | 317 | |
e8f69799 | 318 | void tls_sk_destruct(struct sock *sk, struct tls_context *ctx); |
3c4d7559 DW |
319 | int tls_push_sg(struct sock *sk, struct tls_context *ctx, |
320 | struct scatterlist *sg, u16 first_offset, | |
321 | int flags); | |
a42055e8 VG |
322 | int tls_push_partial_record(struct sock *sk, struct tls_context *ctx, |
323 | int flags); | |
324 | ||
3c4d7559 DW |
325 | int tls_push_pending_closed_record(struct sock *sk, struct tls_context *ctx, |
326 | int flags, long *timeo); | |
327 | ||
328 | static inline bool tls_is_pending_closed_record(struct tls_context *ctx) | |
329 | { | |
330 | return test_bit(TLS_PENDING_CLOSED_RECORD, &ctx->flags); | |
331 | } | |
332 | ||
333 | static inline int tls_complete_pending_work(struct sock *sk, | |
334 | struct tls_context *ctx, | |
335 | int flags, long *timeo) | |
336 | { | |
337 | int rc = 0; | |
338 | ||
339 | if (unlikely(sk->sk_write_pending)) | |
340 | rc = wait_on_pending_writer(sk, timeo); | |
341 | ||
342 | if (!rc && tls_is_pending_closed_record(ctx)) | |
343 | rc = tls_push_pending_closed_record(sk, ctx, flags, timeo); | |
344 | ||
345 | return rc; | |
346 | } | |
347 | ||
348 | static inline bool tls_is_partially_sent_record(struct tls_context *ctx) | |
349 | { | |
350 | return !!ctx->partially_sent_record; | |
351 | } | |
352 | ||
353 | static inline bool tls_is_pending_open_record(struct tls_context *tls_ctx) | |
354 | { | |
355 | return tls_ctx->pending_open_record_frags; | |
356 | } | |
357 | ||
9932a29a | 358 | static inline bool is_tx_ready(struct tls_sw_context_tx *ctx) |
a42055e8 VG |
359 | { |
360 | struct tls_rec *rec; | |
a42055e8 | 361 | |
9932a29a | 362 | rec = list_first_entry(&ctx->tx_list, struct tls_rec, list); |
a42055e8 VG |
363 | if (!rec) |
364 | return false; | |
365 | ||
9932a29a | 366 | return READ_ONCE(rec->tx_ready); |
a42055e8 VG |
367 | } |
368 | ||
4799ac81 BP |
369 | struct sk_buff * |
370 | tls_validate_xmit_skb(struct sock *sk, struct net_device *dev, | |
371 | struct sk_buff *skb); | |
372 | ||
e8f69799 IL |
373 | static inline bool tls_is_sk_tx_device_offloaded(struct sock *sk) |
374 | { | |
4799ac81 BP |
375 | #ifdef CONFIG_SOCK_VALIDATE_XMIT |
376 | return sk_fullsock(sk) & | |
377 | (smp_load_acquire(&sk->sk_validate_xmit_skb) == | |
378 | &tls_validate_xmit_skb); | |
379 | #else | |
380 | return false; | |
381 | #endif | |
e8f69799 IL |
382 | } |
383 | ||
f4a8e43f | 384 | static inline void tls_err_abort(struct sock *sk, int err) |
3c4d7559 | 385 | { |
f4a8e43f | 386 | sk->sk_err = err; |
3c4d7559 DW |
387 | sk->sk_error_report(sk); |
388 | } | |
389 | ||
390 | static inline bool tls_bigint_increment(unsigned char *seq, int len) | |
391 | { | |
392 | int i; | |
393 | ||
394 | for (i = len - 1; i >= 0; i--) { | |
395 | ++seq[i]; | |
396 | if (seq[i] != 0) | |
397 | break; | |
398 | } | |
399 | ||
400 | return (i == -1); | |
401 | } | |
402 | ||
403 | static inline void tls_advance_record_sn(struct sock *sk, | |
130b392c DW |
404 | struct cipher_context *ctx, |
405 | int version) | |
3c4d7559 DW |
406 | { |
407 | if (tls_bigint_increment(ctx->rec_seq, ctx->rec_seq_size)) | |
f4a8e43f | 408 | tls_err_abort(sk, EBADMSG); |
130b392c DW |
409 | |
410 | if (version != TLS_1_3_VERSION) { | |
411 | tls_bigint_increment(ctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, | |
412 | ctx->iv_size); | |
413 | } | |
3c4d7559 DW |
414 | } |
415 | ||
416 | static inline void tls_fill_prepend(struct tls_context *ctx, | |
417 | char *buf, | |
418 | size_t plaintext_len, | |
130b392c DW |
419 | unsigned char record_type, |
420 | int version) | |
3c4d7559 | 421 | { |
dbe42559 | 422 | size_t pkt_len, iv_size = ctx->tx.iv_size; |
3c4d7559 | 423 | |
130b392c DW |
424 | pkt_len = plaintext_len + ctx->tx.tag_size; |
425 | if (version != TLS_1_3_VERSION) { | |
426 | pkt_len += iv_size; | |
427 | ||
428 | memcpy(buf + TLS_NONCE_OFFSET, | |
429 | ctx->tx.iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, iv_size); | |
430 | } | |
3c4d7559 DW |
431 | |
432 | /* we cover nonce explicit here as well, so buf should be of | |
433 | * size KTLS_DTLS_HEADER_SIZE + KTLS_DTLS_NONCE_EXPLICIT_SIZE | |
434 | */ | |
130b392c DW |
435 | buf[0] = version == TLS_1_3_VERSION ? |
436 | TLS_RECORD_TYPE_DATA : record_type; | |
437 | /* Note that VERSION must be TLS_1_2 for both TLS1.2 and TLS1.3 */ | |
438 | buf[1] = TLS_1_2_VERSION_MINOR; | |
439 | buf[2] = TLS_1_2_VERSION_MAJOR; | |
3c4d7559 DW |
440 | /* we can use IV for nonce explicit according to spec */ |
441 | buf[3] = pkt_len >> 8; | |
442 | buf[4] = pkt_len & 0xFF; | |
3c4d7559 DW |
443 | } |
444 | ||
213ef6e7 IL |
445 | static inline void tls_make_aad(char *buf, |
446 | size_t size, | |
447 | char *record_sequence, | |
448 | int record_sequence_size, | |
130b392c DW |
449 | unsigned char record_type, |
450 | int version) | |
451 | { | |
452 | if (version != TLS_1_3_VERSION) { | |
453 | memcpy(buf, record_sequence, record_sequence_size); | |
454 | buf += 8; | |
455 | } else { | |
456 | size += TLS_CIPHER_AES_GCM_128_TAG_SIZE; | |
457 | } | |
458 | ||
459 | buf[0] = version == TLS_1_3_VERSION ? | |
460 | TLS_RECORD_TYPE_DATA : record_type; | |
461 | buf[1] = TLS_1_2_VERSION_MAJOR; | |
462 | buf[2] = TLS_1_2_VERSION_MINOR; | |
463 | buf[3] = size >> 8; | |
464 | buf[4] = size & 0xFF; | |
465 | } | |
466 | ||
467 | static inline void xor_iv_with_seq(int version, char *iv, char *seq) | |
213ef6e7 | 468 | { |
130b392c | 469 | int i; |
213ef6e7 | 470 | |
130b392c DW |
471 | if (version == TLS_1_3_VERSION) { |
472 | for (i = 0; i < 8; i++) | |
473 | iv[i + 4] ^= seq[i]; | |
474 | } | |
213ef6e7 IL |
475 | } |
476 | ||
3c4d7559 DW |
477 | static inline struct tls_context *tls_get_ctx(const struct sock *sk) |
478 | { | |
479 | struct inet_connection_sock *icsk = inet_csk(sk); | |
480 | ||
481 | return icsk->icsk_ulp_data; | |
482 | } | |
483 | ||
f66de3ee BP |
484 | static inline struct tls_sw_context_rx *tls_sw_ctx_rx( |
485 | const struct tls_context *tls_ctx) | |
486 | { | |
487 | return (struct tls_sw_context_rx *)tls_ctx->priv_ctx_rx; | |
488 | } | |
489 | ||
490 | static inline struct tls_sw_context_tx *tls_sw_ctx_tx( | |
3c4d7559 DW |
491 | const struct tls_context *tls_ctx) |
492 | { | |
f66de3ee | 493 | return (struct tls_sw_context_tx *)tls_ctx->priv_ctx_tx; |
3c4d7559 DW |
494 | } |
495 | ||
d80a1b9d BP |
496 | static inline struct tls_offload_context_tx * |
497 | tls_offload_ctx_tx(const struct tls_context *tls_ctx) | |
3c4d7559 | 498 | { |
d80a1b9d | 499 | return (struct tls_offload_context_tx *)tls_ctx->priv_ctx_tx; |
3c4d7559 DW |
500 | } |
501 | ||
0608c69c JF |
502 | static inline bool tls_sw_has_ctx_tx(const struct sock *sk) |
503 | { | |
504 | struct tls_context *ctx = tls_get_ctx(sk); | |
505 | ||
506 | if (!ctx) | |
507 | return false; | |
508 | return !!tls_sw_ctx_tx(ctx); | |
509 | } | |
510 | ||
4799ac81 BP |
511 | static inline struct tls_offload_context_rx * |
512 | tls_offload_ctx_rx(const struct tls_context *tls_ctx) | |
513 | { | |
514 | return (struct tls_offload_context_rx *)tls_ctx->priv_ctx_rx; | |
515 | } | |
516 | ||
517 | /* The TLS context is valid until sk_destruct is called */ | |
518 | static inline void tls_offload_rx_resync_request(struct sock *sk, __be32 seq) | |
519 | { | |
520 | struct tls_context *tls_ctx = tls_get_ctx(sk); | |
521 | struct tls_offload_context_rx *rx_ctx = tls_offload_ctx_rx(tls_ctx); | |
522 | ||
523 | atomic64_set(&rx_ctx->resync_req, ((((uint64_t)seq) << 32) | 1)); | |
524 | } | |
525 | ||
526 | ||
3c4d7559 DW |
527 | int tls_proccess_cmsg(struct sock *sk, struct msghdr *msg, |
528 | unsigned char *record_type); | |
dd0bed16 AG |
529 | void tls_register_device(struct tls_device *device); |
530 | void tls_unregister_device(struct tls_device *device); | |
4799ac81 | 531 | int tls_device_decrypted(struct sock *sk, struct sk_buff *skb); |
dafb67f3 BP |
532 | int decrypt_skb(struct sock *sk, struct sk_buff *skb, |
533 | struct scatterlist *sgout); | |
3c4d7559 | 534 | |
e8f69799 IL |
535 | struct sk_buff *tls_validate_xmit_skb(struct sock *sk, |
536 | struct net_device *dev, | |
537 | struct sk_buff *skb); | |
538 | ||
539 | int tls_sw_fallback_init(struct sock *sk, | |
d80a1b9d | 540 | struct tls_offload_context_tx *offload_ctx, |
e8f69799 IL |
541 | struct tls_crypto_info *crypto_info); |
542 | ||
4799ac81 BP |
543 | int tls_set_device_offload_rx(struct sock *sk, struct tls_context *ctx); |
544 | ||
545 | void tls_device_offload_cleanup_rx(struct sock *sk); | |
546 | void handle_device_resync(struct sock *sk, u32 seq, u64 rcd_sn); | |
547 | ||
3c4d7559 | 548 | #endif /* _TLS_OFFLOAD_H */ |