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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> | |
79ffe608 | 42 | #include <linux/mutex.h> |
2e361176 | 43 | #include <linux/netdevice.h> |
15a7dea7 | 44 | #include <linux/rcupdate.h> |
d829e9c4 | 45 | |
d26b698d | 46 | #include <net/net_namespace.h> |
b9f3eb49 | 47 | #include <net/tcp.h> |
c46234eb | 48 | #include <net/strparser.h> |
a42055e8 | 49 | #include <crypto/aead.h> |
3c4d7559 DW |
50 | #include <uapi/linux/tls.h> |
51 | ||
58790314 | 52 | struct tls_rec; |
3c4d7559 | 53 | |
2d2c5ea2 TT |
54 | struct tls_cipher_size_desc { |
55 | unsigned int iv; | |
56 | unsigned int key; | |
57 | unsigned int salt; | |
58 | unsigned int tag; | |
59 | unsigned int rec_seq; | |
60 | }; | |
61 | ||
62 | extern const struct tls_cipher_size_desc tls_cipher_size_desc[]; | |
63 | ||
3c4d7559 DW |
64 | /* Maximum data size carried in a TLS record */ |
65 | #define TLS_MAX_PAYLOAD_SIZE ((size_t)1 << 14) | |
66 | ||
67 | #define TLS_HEADER_SIZE 5 | |
68 | #define TLS_NONCE_OFFSET TLS_HEADER_SIZE | |
69 | ||
70 | #define TLS_CRYPTO_INFO_READY(info) ((info)->cipher_type) | |
71 | ||
72 | #define TLS_RECORD_TYPE_DATA 0x17 | |
73 | ||
74 | #define TLS_AAD_SPACE_SIZE 13 | |
dd0bed16 | 75 | |
f295b3ae | 76 | #define MAX_IV_SIZE 16 |
a8340cc0 | 77 | #define TLS_TAG_SIZE 16 |
89fec474 | 78 | #define TLS_MAX_REC_SEQ_SIZE 8 |
50a07aa5 | 79 | #define TLS_MAX_AAD_SIZE TLS_AAD_SPACE_SIZE |
f295b3ae | 80 | |
128cfb88 | 81 | /* For CCM mode, the full 16-bytes of IV is made of '4' fields of given sizes. |
f295b3ae VG |
82 | * |
83 | * IV[16] = b0[1] || implicit nonce[4] || explicit nonce[8] || length[3] | |
84 | * | |
85 | * The field 'length' is encoded in field 'b0' as '(length width - 1)'. | |
86 | * Hence b0 contains (3 - 1) = 2. | |
87 | */ | |
88 | #define TLS_AES_CCM_IV_B0_BYTE 2 | |
128cfb88 | 89 | #define TLS_SM4_CCM_IV_B0_BYTE 2 |
f295b3ae | 90 | |
4799ac81 BP |
91 | enum { |
92 | TLS_BASE, | |
93 | TLS_SW, | |
4799ac81 | 94 | TLS_HW, |
4799ac81 BP |
95 | TLS_HW_RECORD, |
96 | TLS_NUM_CONFIG, | |
97 | }; | |
98 | ||
a42055e8 VG |
99 | struct tx_work { |
100 | struct delayed_work work; | |
101 | struct sock *sk; | |
102 | }; | |
103 | ||
104 | struct tls_sw_context_tx { | |
105 | struct crypto_aead *aead_send; | |
106 | struct crypto_wait async_wait; | |
107 | struct tx_work tx_work; | |
108 | struct tls_rec *open_rec; | |
9932a29a | 109 | struct list_head tx_list; |
a42055e8 | 110 | atomic_t encrypt_pending; |
0cada332 VKY |
111 | /* protect crypto_wait with encrypt_pending */ |
112 | spinlock_t encrypt_compl_lock; | |
a42055e8 | 113 | int async_notify; |
5c5458ec | 114 | u8 async_capable:1; |
a42055e8 VG |
115 | |
116 | #define BIT_TX_SCHEDULED 0 | |
f87e62d4 | 117 | #define BIT_TX_CLOSING 1 |
a42055e8 | 118 | unsigned long tx_bitmask; |
3c4d7559 DW |
119 | }; |
120 | ||
84c61fe1 JK |
121 | struct tls_strparser { |
122 | struct sock *sk; | |
123 | ||
124 | u32 mark : 8; | |
125 | u32 stopped : 1; | |
126 | u32 copy_mode : 1; | |
127 | u32 msg_ready : 1; | |
128 | ||
129 | struct strp_msg stm; | |
130 | ||
131 | struct sk_buff *anchor; | |
132 | struct work_struct work; | |
133 | }; | |
134 | ||
f66de3ee BP |
135 | struct tls_sw_context_rx { |
136 | struct crypto_aead *aead_recv; | |
137 | struct crypto_wait async_wait; | |
692d7b5d | 138 | struct sk_buff_head rx_list; /* list of decrypted 'data' records */ |
f66de3ee | 139 | void (*saved_data_ready)(struct sock *sk); |
924ad65e | 140 | |
4cbc325e | 141 | u8 reader_present; |
5c5458ec | 142 | u8 async_capable:1; |
88527790 | 143 | u8 zc_capable:1; |
4cbc325e | 144 | u8 reader_contended:1; |
84c61fe1 JK |
145 | |
146 | struct tls_strparser strp; | |
147 | ||
94524d8f | 148 | atomic_t decrypt_pending; |
0cada332 VKY |
149 | /* protect crypto_wait with decrypt_pending*/ |
150 | spinlock_t decrypt_compl_lock; | |
c618db2a | 151 | struct sk_buff_head async_hold; |
4cbc325e | 152 | struct wait_queue_head wq; |
94524d8f VG |
153 | }; |
154 | ||
e8f69799 IL |
155 | struct tls_record_info { |
156 | struct list_head list; | |
157 | u32 end_seq; | |
158 | int len; | |
159 | int num_frags; | |
160 | skb_frag_t frags[MAX_SKB_FRAGS]; | |
161 | }; | |
162 | ||
d80a1b9d | 163 | struct tls_offload_context_tx { |
e8f69799 IL |
164 | struct crypto_aead *aead_send; |
165 | spinlock_t lock; /* protects records list */ | |
166 | struct list_head records_list; | |
167 | struct tls_record_info *open_record; | |
168 | struct tls_record_info *retransmit_hint; | |
169 | u64 hint_record_sn; | |
170 | u64 unacked_record_sn; | |
171 | ||
172 | struct scatterlist sg_tx_data[MAX_SKB_FRAGS]; | |
173 | void (*sk_destruct)(struct sock *sk); | |
7adc91e0 TT |
174 | struct work_struct destruct_work; |
175 | struct tls_context *ctx; | |
2e361176 | 176 | u8 driver_state[] __aligned(8); |
e8f69799 IL |
177 | /* The TLS layer reserves room for driver specific state |
178 | * Currently the belief is that there is not enough | |
179 | * driver specific state to justify another layer of indirection | |
180 | */ | |
2d6b51c6 | 181 | #define TLS_DRIVER_STATE_SIZE_TX 16 |
e8f69799 IL |
182 | }; |
183 | ||
d80a1b9d | 184 | #define TLS_OFFLOAD_CONTEXT_SIZE_TX \ |
2e361176 | 185 | (sizeof(struct tls_offload_context_tx) + TLS_DRIVER_STATE_SIZE_TX) |
e8f69799 | 186 | |
e52972c1 | 187 | enum tls_context_flags { |
c55dcdd4 MM |
188 | /* tls_device_down was called after the netdev went down, device state |
189 | * was released, and kTLS works in software, even though rx_conf is | |
190 | * still TLS_HW (needed for transition). | |
191 | */ | |
192 | TLS_RX_DEV_DEGRADED = 0, | |
50180074 JK |
193 | /* Unlike RX where resync is driven entirely by the core in TX only |
194 | * the driver knows when things went out of sync, so we need the flag | |
195 | * to be atomic. | |
196 | */ | |
197 | TLS_TX_SYNC_SCHED = 1, | |
025cc2fb MM |
198 | /* tls_dev_del was called for the RX side, device state was released, |
199 | * but tls_ctx->netdev might still be kept, because TX-side driver | |
200 | * resources might not be released yet. Used to prevent the second | |
201 | * tls_dev_del call in tls_device_down if it happens simultaneously. | |
202 | */ | |
203 | TLS_RX_DEV_CLOSED = 2, | |
e52972c1 JK |
204 | }; |
205 | ||
dbe42559 | 206 | struct cipher_context { |
dbe42559 | 207 | char *iv; |
dbe42559 DW |
208 | char *rec_seq; |
209 | }; | |
210 | ||
86029d10 SD |
211 | union tls_crypto_context { |
212 | struct tls_crypto_info info; | |
fb99bce7 DW |
213 | union { |
214 | struct tls12_crypto_info_aes_gcm_128 aes_gcm_128; | |
215 | struct tls12_crypto_info_aes_gcm_256 aes_gcm_256; | |
923c40c4 | 216 | struct tls12_crypto_info_chacha20_poly1305 chacha20_poly1305; |
39d8fb96 TZ |
217 | struct tls12_crypto_info_sm4_gcm sm4_gcm; |
218 | struct tls12_crypto_info_sm4_ccm sm4_ccm; | |
fb99bce7 | 219 | }; |
86029d10 SD |
220 | }; |
221 | ||
4509de14 VG |
222 | struct tls_prot_info { |
223 | u16 version; | |
224 | u16 cipher_type; | |
225 | u16 prepend_size; | |
226 | u16 tag_size; | |
227 | u16 overhead_size; | |
228 | u16 iv_size; | |
f295b3ae | 229 | u16 salt_size; |
4509de14 VG |
230 | u16 rec_seq_size; |
231 | u16 aad_size; | |
232 | u16 tail_size; | |
233 | }; | |
234 | ||
3c4d7559 | 235 | struct tls_context { |
f0aaa2c9 | 236 | /* read-only cache line */ |
4509de14 VG |
237 | struct tls_prot_info prot_info; |
238 | ||
f0aaa2c9 JK |
239 | u8 tx_conf:3; |
240 | u8 rx_conf:3; | |
c1318b39 | 241 | u8 zerocopy_sendfile:1; |
88527790 | 242 | u8 rx_no_pad:1; |
3c4d7559 | 243 | |
f0aaa2c9 JK |
244 | int (*push_pending_record)(struct sock *sk, int flags); |
245 | void (*sk_write_space)(struct sock *sk); | |
f66de3ee BP |
246 | |
247 | void *priv_ctx_tx; | |
248 | void *priv_ctx_rx; | |
3c4d7559 | 249 | |
94ce3b64 | 250 | struct net_device __rcu *netdev; |
6d88207f | 251 | |
f0aaa2c9 | 252 | /* rw cache line */ |
dbe42559 | 253 | struct cipher_context tx; |
c46234eb | 254 | struct cipher_context rx; |
3c4d7559 DW |
255 | |
256 | struct scatterlist *partially_sent_record; | |
257 | u16 partially_sent_offset; | |
a42055e8 | 258 | |
c212d2c7 | 259 | bool in_tcp_sendpages; |
d829e9c4 | 260 | bool pending_open_record_frags; |
79ffe608 JK |
261 | |
262 | struct mutex tx_lock; /* protects partially_sent_* fields and | |
263 | * per-type TX fields | |
264 | */ | |
f0aaa2c9 | 265 | unsigned long flags; |
3c4d7559 | 266 | |
f0aaa2c9 | 267 | /* cache cold stuff */ |
32857cf5 | 268 | struct proto *sk_proto; |
c55dcdd4 | 269 | struct sock *sk; |
32857cf5 | 270 | |
4799ac81 | 271 | void (*sk_destruct)(struct sock *sk); |
f0aaa2c9 JK |
272 | |
273 | union tls_crypto_context crypto_send; | |
274 | union tls_crypto_context crypto_recv; | |
275 | ||
276 | struct list_head list; | |
277 | refcount_t refcount; | |
15a7dea7 | 278 | struct rcu_head rcu; |
3c4d7559 DW |
279 | }; |
280 | ||
da68b4ad JK |
281 | enum tls_offload_ctx_dir { |
282 | TLS_OFFLOAD_CTX_DIR_RX, | |
283 | TLS_OFFLOAD_CTX_DIR_TX, | |
284 | }; | |
285 | ||
286 | struct tlsdev_ops { | |
287 | int (*tls_dev_add)(struct net_device *netdev, struct sock *sk, | |
288 | enum tls_offload_ctx_dir direction, | |
289 | struct tls_crypto_info *crypto_info, | |
290 | u32 start_offload_tcp_sn); | |
291 | void (*tls_dev_del)(struct net_device *netdev, | |
292 | struct tls_context *ctx, | |
293 | enum tls_offload_ctx_dir direction); | |
b5d9a834 DM |
294 | int (*tls_dev_resync)(struct net_device *netdev, |
295 | struct sock *sk, u32 seq, u8 *rcd_sn, | |
296 | enum tls_offload_ctx_dir direction); | |
da68b4ad JK |
297 | }; |
298 | ||
f953d33b JK |
299 | enum tls_offload_sync_type { |
300 | TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ = 0, | |
301 | TLS_OFFLOAD_SYNC_TYPE_CORE_NEXT_HINT = 1, | |
ed9b7646 | 302 | TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ_ASYNC = 2, |
f953d33b JK |
303 | }; |
304 | ||
305 | #define TLS_DEVICE_RESYNC_NH_START_IVAL 2 | |
306 | #define TLS_DEVICE_RESYNC_NH_MAX_IVAL 128 | |
307 | ||
ed9b7646 BP |
308 | #define TLS_DEVICE_RESYNC_ASYNC_LOGMAX 13 |
309 | struct tls_offload_resync_async { | |
310 | atomic64_t req; | |
138559b9 TT |
311 | u16 loglen; |
312 | u16 rcd_delta; | |
ed9b7646 BP |
313 | u32 log[TLS_DEVICE_RESYNC_ASYNC_LOGMAX]; |
314 | }; | |
315 | ||
4799ac81 BP |
316 | struct tls_offload_context_rx { |
317 | /* sw must be the first member of tls_offload_context_rx */ | |
318 | struct tls_sw_context_rx sw; | |
f953d33b JK |
319 | enum tls_offload_sync_type resync_type; |
320 | /* this member is set regardless of resync_type, to avoid branches */ | |
321 | u8 resync_nh_reset:1; | |
322 | /* CORE_NEXT_HINT-only member, but use the hole here */ | |
323 | u8 resync_nh_do_now:1; | |
324 | union { | |
325 | /* TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ */ | |
326 | struct { | |
327 | atomic64_t resync_req; | |
328 | }; | |
329 | /* TLS_OFFLOAD_SYNC_TYPE_CORE_NEXT_HINT */ | |
330 | struct { | |
331 | u32 decrypted_failed; | |
332 | u32 decrypted_tgt; | |
333 | } resync_nh; | |
ed9b7646 BP |
334 | /* TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ_ASYNC */ |
335 | struct { | |
336 | struct tls_offload_resync_async *resync_async; | |
337 | }; | |
f953d33b | 338 | }; |
2e361176 | 339 | u8 driver_state[] __aligned(8); |
4799ac81 BP |
340 | /* The TLS layer reserves room for driver specific state |
341 | * Currently the belief is that there is not enough | |
342 | * driver specific state to justify another layer of indirection | |
343 | */ | |
2d6b51c6 | 344 | #define TLS_DRIVER_STATE_SIZE_RX 8 |
4799ac81 BP |
345 | }; |
346 | ||
347 | #define TLS_OFFLOAD_CONTEXT_SIZE_RX \ | |
2e361176 | 348 | (sizeof(struct tls_offload_context_rx) + TLS_DRIVER_STATE_SIZE_RX) |
4799ac81 | 349 | |
d80a1b9d | 350 | struct tls_record_info *tls_get_record(struct tls_offload_context_tx *context, |
e8f69799 IL |
351 | u32 seq, u64 *p_record_sn); |
352 | ||
353 | static inline bool tls_record_is_start_marker(struct tls_record_info *rec) | |
354 | { | |
355 | return rec->len == 0; | |
356 | } | |
357 | ||
358 | static inline u32 tls_record_start_seq(struct tls_record_info *rec) | |
359 | { | |
360 | return rec->end_seq - rec->len; | |
361 | } | |
3c4d7559 | 362 | |
4799ac81 BP |
363 | struct sk_buff * |
364 | tls_validate_xmit_skb(struct sock *sk, struct net_device *dev, | |
365 | struct sk_buff *skb); | |
c55dcdd4 MM |
366 | struct sk_buff * |
367 | tls_validate_xmit_skb_sw(struct sock *sk, struct net_device *dev, | |
368 | struct sk_buff *skb); | |
4799ac81 | 369 | |
e8f69799 IL |
370 | static inline bool tls_is_sk_tx_device_offloaded(struct sock *sk) |
371 | { | |
4799ac81 | 372 | #ifdef CONFIG_SOCK_VALIDATE_XMIT |
b4f47f38 | 373 | return sk_fullsock(sk) && |
4799ac81 BP |
374 | (smp_load_acquire(&sk->sk_validate_xmit_skb) == |
375 | &tls_validate_xmit_skb); | |
376 | #else | |
377 | return false; | |
378 | #endif | |
e8f69799 IL |
379 | } |
380 | ||
4509de14 VG |
381 | static inline struct tls_context *tls_get_ctx(const struct sock *sk) |
382 | { | |
383 | struct inet_connection_sock *icsk = inet_csk(sk); | |
384 | ||
15a7dea7 JK |
385 | /* Use RCU on icsk_ulp_data only for sock diag code, |
386 | * TLS data path doesn't need rcu_dereference(). | |
387 | */ | |
388 | return (__force void *)icsk->icsk_ulp_data; | |
4509de14 VG |
389 | } |
390 | ||
f66de3ee BP |
391 | static inline struct tls_sw_context_rx *tls_sw_ctx_rx( |
392 | const struct tls_context *tls_ctx) | |
393 | { | |
394 | return (struct tls_sw_context_rx *)tls_ctx->priv_ctx_rx; | |
395 | } | |
396 | ||
397 | static inline struct tls_sw_context_tx *tls_sw_ctx_tx( | |
3c4d7559 DW |
398 | const struct tls_context *tls_ctx) |
399 | { | |
f66de3ee | 400 | return (struct tls_sw_context_tx *)tls_ctx->priv_ctx_tx; |
3c4d7559 DW |
401 | } |
402 | ||
d80a1b9d BP |
403 | static inline struct tls_offload_context_tx * |
404 | tls_offload_ctx_tx(const struct tls_context *tls_ctx) | |
3c4d7559 | 405 | { |
d80a1b9d | 406 | return (struct tls_offload_context_tx *)tls_ctx->priv_ctx_tx; |
3c4d7559 DW |
407 | } |
408 | ||
0608c69c JF |
409 | static inline bool tls_sw_has_ctx_tx(const struct sock *sk) |
410 | { | |
411 | struct tls_context *ctx = tls_get_ctx(sk); | |
412 | ||
413 | if (!ctx) | |
414 | return false; | |
415 | return !!tls_sw_ctx_tx(ctx); | |
416 | } | |
417 | ||
e91de6af JF |
418 | static inline bool tls_sw_has_ctx_rx(const struct sock *sk) |
419 | { | |
420 | struct tls_context *ctx = tls_get_ctx(sk); | |
421 | ||
422 | if (!ctx) | |
423 | return false; | |
424 | return !!tls_sw_ctx_rx(ctx); | |
425 | } | |
426 | ||
4799ac81 BP |
427 | static inline struct tls_offload_context_rx * |
428 | tls_offload_ctx_rx(const struct tls_context *tls_ctx) | |
429 | { | |
430 | return (struct tls_offload_context_rx *)tls_ctx->priv_ctx_rx; | |
431 | } | |
432 | ||
2e361176 JK |
433 | static inline void *__tls_driver_ctx(struct tls_context *tls_ctx, |
434 | enum tls_offload_ctx_dir direction) | |
435 | { | |
436 | if (direction == TLS_OFFLOAD_CTX_DIR_TX) | |
437 | return tls_offload_ctx_tx(tls_ctx)->driver_state; | |
438 | else | |
439 | return tls_offload_ctx_rx(tls_ctx)->driver_state; | |
440 | } | |
441 | ||
442 | static inline void * | |
443 | tls_driver_ctx(const struct sock *sk, enum tls_offload_ctx_dir direction) | |
444 | { | |
445 | return __tls_driver_ctx(tls_get_ctx(sk), direction); | |
446 | } | |
2e361176 | 447 | |
ed9b7646 BP |
448 | #define RESYNC_REQ BIT(0) |
449 | #define RESYNC_REQ_ASYNC BIT(1) | |
4799ac81 BP |
450 | /* The TLS context is valid until sk_destruct is called */ |
451 | static inline void tls_offload_rx_resync_request(struct sock *sk, __be32 seq) | |
452 | { | |
453 | struct tls_context *tls_ctx = tls_get_ctx(sk); | |
454 | struct tls_offload_context_rx *rx_ctx = tls_offload_ctx_rx(tls_ctx); | |
455 | ||
ed9b7646 BP |
456 | atomic64_set(&rx_ctx->resync_req, ((u64)ntohl(seq) << 32) | RESYNC_REQ); |
457 | } | |
458 | ||
459 | /* Log all TLS record header TCP sequences in [seq, seq+len] */ | |
460 | static inline void | |
461 | tls_offload_rx_resync_async_request_start(struct sock *sk, __be32 seq, u16 len) | |
462 | { | |
463 | struct tls_context *tls_ctx = tls_get_ctx(sk); | |
464 | struct tls_offload_context_rx *rx_ctx = tls_offload_ctx_rx(tls_ctx); | |
465 | ||
466 | atomic64_set(&rx_ctx->resync_async->req, ((u64)ntohl(seq) << 32) | | |
a6ed3ebc | 467 | ((u64)len << 16) | RESYNC_REQ | RESYNC_REQ_ASYNC); |
ed9b7646 | 468 | rx_ctx->resync_async->loglen = 0; |
138559b9 | 469 | rx_ctx->resync_async->rcd_delta = 0; |
ed9b7646 BP |
470 | } |
471 | ||
472 | static inline void | |
473 | tls_offload_rx_resync_async_request_end(struct sock *sk, __be32 seq) | |
474 | { | |
475 | struct tls_context *tls_ctx = tls_get_ctx(sk); | |
476 | struct tls_offload_context_rx *rx_ctx = tls_offload_ctx_rx(tls_ctx); | |
477 | ||
478 | atomic64_set(&rx_ctx->resync_async->req, | |
479 | ((u64)ntohl(seq) << 32) | RESYNC_REQ); | |
4799ac81 BP |
480 | } |
481 | ||
f953d33b JK |
482 | static inline void |
483 | tls_offload_rx_resync_set_type(struct sock *sk, enum tls_offload_sync_type type) | |
484 | { | |
485 | struct tls_context *tls_ctx = tls_get_ctx(sk); | |
486 | ||
487 | tls_offload_ctx_rx(tls_ctx)->resync_type = type; | |
488 | } | |
4799ac81 | 489 | |
50180074 JK |
490 | /* Driver's seq tracking has to be disabled until resync succeeded */ |
491 | static inline bool tls_offload_tx_resync_pending(struct sock *sk) | |
492 | { | |
493 | struct tls_context *tls_ctx = tls_get_ctx(sk); | |
494 | bool ret; | |
495 | ||
496 | ret = test_bit(TLS_TX_SYNC_SCHED, &tls_ctx->flags); | |
497 | smp_mb__after_atomic(); | |
498 | return ret; | |
499 | } | |
500 | ||
b9727d7f | 501 | struct sk_buff *tls_encrypt_skb(struct sk_buff *skb); |
3c4d7559 | 502 | |
be2fbc15 | 503 | #ifdef CONFIG_TLS_DEVICE |
8d5a49e9 | 504 | void tls_device_sk_destruct(struct sock *sk); |
8538d29c | 505 | void tls_offload_tx_resync_request(struct sock *sk, u32 got_seq, u32 exp_seq); |
8d5a49e9 JK |
506 | |
507 | static inline bool tls_is_sk_rx_device_offloaded(struct sock *sk) | |
508 | { | |
509 | if (!sk_fullsock(sk) || | |
510 | smp_load_acquire(&sk->sk_destruct) != tls_device_sk_destruct) | |
511 | return false; | |
512 | return tls_get_ctx(sk)->rx_conf == TLS_HW; | |
513 | } | |
be2fbc15 | 514 | #endif |
3c4d7559 | 515 | #endif /* _TLS_OFFLOAD_H */ |