~hc/RK356X_SDK_RELEASE.git

..	..	@@ -39,9 +39,16 @@
39	39	#include <linux/crypto.h>
40	40	#include <linux/socket.h>
41	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>
	46	+#include <linux/android_kabi.h>
	47	+
	48	+#include <net/net_namespace.h>
42	49	#include <net/tcp.h>
43	50	#include <net/strparser.h>
44		-
	51	+#include <crypto/aead.h>
45	52	#include <uapi/linux/tls.h>
46	53
47	54
..	..	@@ -56,74 +63,111 @@
56	63	#define TLS_RECORD_TYPE_DATA 0x17
57	64
58	65	#define TLS_AAD_SPACE_SIZE 13
59		-#define TLS_DEVICE_NAME_MAX 32
60	66
61		-/*
62		- * This structure defines the routines for Inline TLS driver.
63		- * The following routines are optional and filled with a
64		- * null pointer if not defined.
	67	+#define MAX_IV_SIZE 16
	68	+#define TLS_MAX_REC_SEQ_SIZE 8
	69	+
	70	+/* For AES-CCM, the full 16-bytes of IV is made of '4' fields of given sizes.
65	71	*
66		- * @name: Its the name of registered Inline tls device
67		- * @dev_list: Inline tls device list
68		- * int (feature)(struct tls_device device);
69		- * Called to return Inline TLS driver capability
	72	+ * IV[16] = b0[1] \|\| implicit nonce[4] \|\| explicit nonce[8] \|\| length[3]
70	73	*
71		- * int (hash)(struct tls_device device, struct sock *sk);
72		- * This function sets Inline driver for listen and program
73		- * device specific functioanlity as required
74		- *
75		- * void (unhash)(struct tls_device device, struct sock *sk);
76		- * This function cleans listen state set by Inline TLS driver
	74	+ * The field 'length' is encoded in field 'b0' as '(length width - 1)'.
	75	+ * Hence b0 contains (3 - 1) = 2.
77	76	*/
78		-struct tls_device {
79		- char name[TLS_DEVICE_NAME_MAX];
80		- struct list_head dev_list;
81		- int (feature)(struct tls_device device);
82		- int (hash)(struct tls_device device, struct sock *sk);
83		- void (unhash)(struct tls_device device, struct sock *sk);
84		-};
	77	+#define TLS_AES_CCM_IV_B0_BYTE 2
	78	+
	79	+#define __TLS_INC_STATS(net, field) \
	80	+ __SNMP_INC_STATS((net)->mib.tls_statistics, field)
	81	+#define TLS_INC_STATS(net, field) \
	82	+ SNMP_INC_STATS((net)->mib.tls_statistics, field)
	83	+#define __TLS_DEC_STATS(net, field) \
	84	+ __SNMP_DEC_STATS((net)->mib.tls_statistics, field)
	85	+#define TLS_DEC_STATS(net, field) \
	86	+ SNMP_DEC_STATS((net)->mib.tls_statistics, field)
85	87
86	88	enum {
87	89	TLS_BASE,
88	90	TLS_SW,
89		-#ifdef CONFIG_TLS_DEVICE
90	91	TLS_HW,
91		-#endif
92	92	TLS_HW_RECORD,
93	93	TLS_NUM_CONFIG,
	94	+};
	95	+
	96	+/* TLS records are maintained in 'struct tls_rec'. It stores the memory pages
	97	+ * allocated or mapped for each TLS record. After encryption, the records are
	98	+ * stores in a linked list.
	99	+ */
	100	+struct tls_rec {
	101	+ struct list_head list;
	102	+ int tx_ready;
	103	+ int tx_flags;
	104	+
	105	+ struct sk_msg msg_plaintext;
	106	+ struct sk_msg msg_encrypted;
	107	+
	108	+ /* AAD \| msg_plaintext.sg.data \| sg_tag */
	109	+ struct scatterlist sg_aead_in[2];
	110	+ /* AAD \| msg_encrypted.sg.data (data contains overhead for hdr & iv & tag) */
	111	+ struct scatterlist sg_aead_out[2];
	112	+
	113	+ char content_type;
	114	+ struct scatterlist sg_content_type;
	115	+
	116	+ char aad_space[TLS_AAD_SPACE_SIZE];
	117	+ u8 iv_data[MAX_IV_SIZE];
	118	+ struct aead_request aead_req;
	119	+
	120	+ ANDROID_KABI_RESERVE(1);
	121	+
	122	+ u8 aead_req_ctx[];
	123	+};
	124	+
	125	+struct tls_msg {
	126	+ struct strp_msg rxm;
	127	+ u8 control;
	128	+};
	129	+
	130	+struct tx_work {
	131	+ struct delayed_work work;
	132	+ struct sock *sk;
94	133	};
95	134
96	135	struct tls_sw_context_tx {
97	136	struct crypto_aead *aead_send;
98	137	struct crypto_wait async_wait;
	138	+ struct tx_work tx_work;
	139	+ struct tls_rec *open_rec;
	140	+ struct list_head tx_list;
	141	+ atomic_t encrypt_pending;
	142	+ /* protect crypto_wait with encrypt_pending */
	143	+ spinlock_t encrypt_compl_lock;
	144	+ int async_notify;
	145	+ u8 async_capable:1;
99	146
100		- char aad_space[TLS_AAD_SPACE_SIZE];
	147	+#define BIT_TX_SCHEDULED 0
	148	+#define BIT_TX_CLOSING 1
	149	+ unsigned long tx_bitmask;
101	150
102		- unsigned int sg_plaintext_size;
103		- int sg_plaintext_num_elem;
104		- struct scatterlist sg_plaintext_data[MAX_SKB_FRAGS];
105		-
106		- unsigned int sg_encrypted_size;
107		- int sg_encrypted_num_elem;
108		- struct scatterlist sg_encrypted_data[MAX_SKB_FRAGS];
109		-
110		- /* AAD \| sg_plaintext_data \| sg_tag */
111		- struct scatterlist sg_aead_in[2];
112		- /* AAD \| sg_encrypted_data (data contain overhead for hdr&iv&tag) */
113		- struct scatterlist sg_aead_out[2];
	151	+ ANDROID_KABI_RESERVE(1);
114	152	};
115	153
116	154	struct tls_sw_context_rx {
117	155	struct crypto_aead *aead_recv;
118	156	struct crypto_wait async_wait;
119		-
120	157	struct strparser strp;
	158	+ struct sk_buff_head rx_list; /* list of decrypted 'data' records */
121	159	void (saved_data_ready)(struct sock sk);
122		- unsigned int (sk_poll)(struct file file, struct socket *sock,
123		- struct poll_table_struct *wait);
	160	+
124	161	struct sk_buff *recv_pkt;
125	162	u8 control;
126		- bool decrypted;
	163	+ u8 async_capable:1;
	164	+ u8 decrypted:1;
	165	+ atomic_t decrypt_pending;
	166	+ /* protect crypto_wait with decrypt_pending*/
	167	+ spinlock_t decrypt_compl_lock;
	168	+ bool async_notify;
	169	+
	170	+ ANDROID_KABI_RESERVE(1);
127	171	};
128	172
129	173	struct tls_record_info {
..	..	@@ -145,24 +189,28 @@
145	189
146	190	struct scatterlist sg_tx_data[MAX_SKB_FRAGS];
147	191	void (sk_destruct)(struct sock sk);
148		- u8 driver_state[];
	192	+ u8 driver_state[] __aligned(8);
149	193	/* The TLS layer reserves room for driver specific state
150	194	* Currently the belief is that there is not enough
151	195	* driver specific state to justify another layer of indirection
152	196	*/
153		-#define TLS_DRIVER_STATE_SIZE (max_t(size_t, 8, sizeof(void *)))
	197	+#define TLS_DRIVER_STATE_SIZE_TX 16
154	198	};
155	199
156	200	#define TLS_OFFLOAD_CONTEXT_SIZE_TX \
157		- (ALIGN(sizeof(struct tls_offload_context_tx), sizeof(void *)) + \
158		- TLS_DRIVER_STATE_SIZE)
159		-
160		-enum {
161		- TLS_PENDING_CLOSED_RECORD
162		-};
	201	+ (sizeof(struct tls_offload_context_tx) + TLS_DRIVER_STATE_SIZE_TX)
163	202
164	203	enum tls_context_flags {
165		- TLS_RX_SYNC_RUNNING = 0,
	204	+ /* tls_device_down was called after the netdev went down, device state
	205	+ * was released, and kTLS works in software, even though rx_conf is
	206	+ * still TLS_HW (needed for transition).
	207	+ */
	208	+ TLS_RX_DEV_DEGRADED = 0,
	209	+ /* Unlike RX where resync is driven entirely by the core in TX only
	210	+ * the driver knows when things went out of sync, so we need the flag
	211	+ * to be atomic.
	212	+ */
	213	+ TLS_TX_SYNC_SCHED = 1,
166	214	/* tls_dev_del was called for the RX side, device state was released,
167	215	* but tls_ctx->netdev might still be kept, because TX-side driver
168	216	* resources might not be released yet. Used to prevent the second
..	..	@@ -172,104 +220,186 @@
172	220	};
173	221
174	222	struct cipher_context {
175		- u16 prepend_size;
176		- u16 tag_size;
177		- u16 overhead_size;
178		- u16 iv_size;
179	223	char *iv;
180		- u16 rec_seq_size;
181	224	char *rec_seq;
182	225	};
183	226
184	227	union tls_crypto_context {
185	228	struct tls_crypto_info info;
186		- struct tls12_crypto_info_aes_gcm_128 aes_gcm_128;
	229	+ union {
	230	+ struct tls12_crypto_info_aes_gcm_128 aes_gcm_128;
	231	+ struct tls12_crypto_info_aes_gcm_256 aes_gcm_256;
	232	+ };
	233	+};
	234	+
	235	+struct tls_prot_info {
	236	+ u16 version;
	237	+ u16 cipher_type;
	238	+ u16 prepend_size;
	239	+ u16 tag_size;
	240	+ u16 overhead_size;
	241	+ u16 iv_size;
	242	+ u16 salt_size;
	243	+ u16 rec_seq_size;
	244	+ u16 aad_size;
	245	+ u16 tail_size;
187	246	};
188	247
189	248	struct tls_context {
190		- union tls_crypto_context crypto_send;
191		- union tls_crypto_context crypto_recv;
192		-
193		- struct list_head list;
194		- struct net_device *netdev;
195		- refcount_t refcount;
196		-
197		- void *priv_ctx_tx;
198		- void *priv_ctx_rx;
	249	+ /* read-only cache line */
	250	+ struct tls_prot_info prot_info;
199	251
200	252	u8 tx_conf:3;
201	253	u8 rx_conf:3;
202	254
	255	+ int (push_pending_record)(struct sock sk, int flags);
	256	+ void (sk_write_space)(struct sock sk);
	257	+
	258	+ void *priv_ctx_tx;
	259	+ void *priv_ctx_rx;
	260	+
	261	+ struct net_device *netdev;
	262	+
	263	+ /* rw cache line */
203	264	struct cipher_context tx;
204	265	struct cipher_context rx;
205	266
206	267	struct scatterlist *partially_sent_record;
207	268	u16 partially_sent_offset;
208		- unsigned long flags;
	269	+
209	270	bool in_tcp_sendpages;
	271	+ bool pending_open_record_frags;
210	272
211		- u16 pending_open_record_frags;
212		- int (push_pending_record)(struct sock sk, int flags);
	273	+ struct mutex tx_lock; /* protects partially_sent_* fields and
	274	+ * per-type TX fields
	275	+ */
	276	+ unsigned long flags;
213	277
214		- void (sk_write_space)(struct sock sk);
	278	+ /* cache cold stuff */
	279	+ struct proto *sk_proto;
	280	+ struct sock *sk;
	281	+
215	282	void (sk_destruct)(struct sock sk);
216		- void (sk_proto_close)(struct sock sk, long timeout);
217	283
218		- int (setsockopt)(struct sock sk, int level,
219		- int optname, char __user *optval,
220		- unsigned int optlen);
221		- int (getsockopt)(struct sock sk, int level,
222		- int optname, char __user *optval,
223		- int __user *optlen);
224		- int (hash)(struct sock sk);
225		- void (unhash)(struct sock sk);
	284	+ union tls_crypto_context crypto_send;
	285	+ union tls_crypto_context crypto_recv;
	286	+
	287	+ struct list_head list;
	288	+ refcount_t refcount;
	289	+ struct rcu_head rcu;
	290	+};
	291	+
	292	+enum tls_offload_ctx_dir {
	293	+ TLS_OFFLOAD_CTX_DIR_RX,
	294	+ TLS_OFFLOAD_CTX_DIR_TX,
	295	+};
	296	+
	297	+struct tlsdev_ops {
	298	+ int (tls_dev_add)(struct net_device netdev, struct sock *sk,
	299	+ enum tls_offload_ctx_dir direction,
	300	+ struct tls_crypto_info *crypto_info,
	301	+ u32 start_offload_tcp_sn);
	302	+ void (tls_dev_del)(struct net_device netdev,
	303	+ struct tls_context *ctx,
	304	+ enum tls_offload_ctx_dir direction);
	305	+ int (tls_dev_resync)(struct net_device netdev,
	306	+ struct sock sk, u32 seq, u8 rcd_sn,
	307	+ enum tls_offload_ctx_dir direction);
	308	+
	309	+ ANDROID_KABI_RESERVE(1);
	310	+ ANDROID_KABI_RESERVE(2);
	311	+ ANDROID_KABI_RESERVE(3);
	312	+ ANDROID_KABI_RESERVE(4);
	313	+
	314	+};
	315	+
	316	+enum tls_offload_sync_type {
	317	+ TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ = 0,
	318	+ TLS_OFFLOAD_SYNC_TYPE_CORE_NEXT_HINT = 1,
	319	+ TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ_ASYNC = 2,
	320	+};
	321	+
	322	+#define TLS_DEVICE_RESYNC_NH_START_IVAL 2
	323	+#define TLS_DEVICE_RESYNC_NH_MAX_IVAL 128
	324	+
	325	+#define TLS_DEVICE_RESYNC_ASYNC_LOGMAX 13
	326	+struct tls_offload_resync_async {
	327	+ atomic64_t req;
	328	+ u16 loglen;
	329	+ u16 rcd_delta;
	330	+ u32 log[TLS_DEVICE_RESYNC_ASYNC_LOGMAX];
226	331	};
227	332
228	333	struct tls_offload_context_rx {
229	334	/* sw must be the first member of tls_offload_context_rx */
230	335	struct tls_sw_context_rx sw;
231		- atomic64_t resync_req;
232		- u8 driver_state[];
	336	+ enum tls_offload_sync_type resync_type;
	337	+ /* this member is set regardless of resync_type, to avoid branches */
	338	+ u8 resync_nh_reset:1;
	339	+ /* CORE_NEXT_HINT-only member, but use the hole here */
	340	+ u8 resync_nh_do_now:1;
	341	+ union {
	342	+ /* TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ */
	343	+ struct {
	344	+ atomic64_t resync_req;
	345	+ };
	346	+ /* TLS_OFFLOAD_SYNC_TYPE_CORE_NEXT_HINT */
	347	+ struct {
	348	+ u32 decrypted_failed;
	349	+ u32 decrypted_tgt;
	350	+ } resync_nh;
	351	+ /* TLS_OFFLOAD_SYNC_TYPE_DRIVER_REQ_ASYNC */
	352	+ struct {
	353	+ struct tls_offload_resync_async *resync_async;
	354	+ };
	355	+ };
	356	+ u8 driver_state[] __aligned(8);
233	357	/* The TLS layer reserves room for driver specific state
234	358	* Currently the belief is that there is not enough
235	359	* driver specific state to justify another layer of indirection
236	360	*/
	361	+#define TLS_DRIVER_STATE_SIZE_RX 8
237	362	};
238	363
239	364	#define TLS_OFFLOAD_CONTEXT_SIZE_RX \
240		- (ALIGN(sizeof(struct tls_offload_context_rx), sizeof(void *)) + \
241		- TLS_DRIVER_STATE_SIZE)
	365	+ (sizeof(struct tls_offload_context_rx) + TLS_DRIVER_STATE_SIZE_RX)
242	366
243		-void tls_ctx_free(struct tls_context *ctx);
	367	+struct tls_context tls_ctx_create(struct sock sk);
	368	+void tls_ctx_free(struct sock sk, struct tls_context ctx);
	369	+void update_sk_prot(struct sock sk, struct tls_context ctx);
	370	+
244	371	int wait_on_pending_writer(struct sock sk, long timeo);
245	372	int tls_sk_query(struct sock sk, int optname, char __user optval,
246	373	int __user *optlen);
247	374	int tls_sk_attach(struct sock sk, int optname, char __user optval,
248	375	unsigned int optlen);
	376	+void tls_err_abort(struct sock *sk, int err);
249	377
250	378	int tls_set_sw_offload(struct sock sk, struct tls_context ctx, int tx);
	379	+void tls_sw_strparser_arm(struct sock sk, struct tls_context ctx);
	380	+void tls_sw_strparser_done(struct tls_context *tls_ctx);
251	381	int tls_sw_sendmsg(struct sock sk, struct msghdr msg, size_t size);
	382	+int tls_sw_sendpage_locked(struct sock sk, struct page page,
	383	+ int offset, size_t size, int flags);
252	384	int tls_sw_sendpage(struct sock sk, struct page page,
253	385	int offset, size_t size, int flags);
254		-void tls_sw_close(struct sock *sk, long timeout);
255		-void tls_sw_free_resources_tx(struct sock *sk);
	386	+void tls_sw_cancel_work_tx(struct tls_context *tls_ctx);
	387	+void tls_sw_release_resources_tx(struct sock *sk);
	388	+void tls_sw_free_ctx_tx(struct tls_context *tls_ctx);
256	389	void tls_sw_free_resources_rx(struct sock *sk);
257	390	void tls_sw_release_resources_rx(struct sock *sk);
	391	+void tls_sw_free_ctx_rx(struct tls_context *tls_ctx);
258	392	int tls_sw_recvmsg(struct sock sk, struct msghdr msg, size_t len,
259	393	int nonblock, int flags, int *addr_len);
260		-unsigned int tls_sw_poll(struct file file, struct socket sock,
261		- struct poll_table_struct *wait);
	394	+bool tls_sw_stream_read(const struct sock *sk);
262	395	ssize_t tls_sw_splice_read(struct socket sock, loff_t ppos,
263	396	struct pipe_inode_info *pipe,
264	397	size_t len, unsigned int flags);
265	398
266		-int tls_set_device_offload(struct sock sk, struct tls_context ctx);
267	399	int tls_device_sendmsg(struct sock sk, struct msghdr msg, size_t size);
268	400	int tls_device_sendpage(struct sock sk, struct page page,
269	401	int offset, size_t size, int flags);
270		-void tls_device_sk_destruct(struct sock *sk);
271		-void tls_device_init(void);
272		-void tls_device_cleanup(void);
	402	+int tls_tx_records(struct sock *sk, int flags);
273	403
274	404	struct tls_record_info tls_get_record(struct tls_offload_context_tx context,
275	405	u32 seq, u64 *p_record_sn);
..	..	@@ -284,31 +414,16 @@
284	414	return rec->end_seq - rec->len;
285	415	}
286	416
287		-void tls_sk_destruct(struct sock sk, struct tls_context ctx);
288	417	int tls_push_sg(struct sock sk, struct tls_context ctx,
289	418	struct scatterlist *sg, u16 first_offset,
290	419	int flags);
291		-int tls_push_pending_closed_record(struct sock sk, struct tls_context ctx,
292		- int flags, long *timeo);
	420	+int tls_push_partial_record(struct sock sk, struct tls_context ctx,
	421	+ int flags);
	422	+void tls_free_partial_record(struct sock sk, struct tls_context ctx);
293	423
294		-static inline bool tls_is_pending_closed_record(struct tls_context *ctx)
	424	+static inline struct tls_msg tls_msg(struct sk_buff skb)
295	425	{
296		- return test_bit(TLS_PENDING_CLOSED_RECORD, &ctx->flags);
297		-}
298		-
299		-static inline int tls_complete_pending_work(struct sock *sk,
300		- struct tls_context *ctx,
301		- int flags, long *timeo)
302		-{
303		- int rc = 0;
304		-
305		- if (unlikely(sk->sk_write_pending))
306		- rc = wait_on_pending_writer(sk, timeo);
307		-
308		- if (!rc && tls_is_pending_closed_record(ctx))
309		- rc = tls_push_pending_closed_record(sk, ctx, flags, timeo);
310		-
311		- return rc;
	426	+ return (struct tls_msg *)strp_msg(skb);
312	427	}
313	428
314	429	static inline bool tls_is_partially_sent_record(struct tls_context *ctx)
..	..	@@ -321,9 +436,40 @@
321	436	return tls_ctx->pending_open_record_frags;
322	437	}
323	438
	439	+static inline bool is_tx_ready(struct tls_sw_context_tx *ctx)
	440	+{
	441	+ struct tls_rec *rec;
	442	+
	443	+ rec = list_first_entry(&ctx->tx_list, struct tls_rec, list);
	444	+ if (!rec)
	445	+ return false;
	446	+
	447	+ return READ_ONCE(rec->tx_ready);
	448	+}
	449	+
	450	+static inline u16 tls_user_config(struct tls_context *ctx, bool tx)
	451	+{
	452	+ u16 config = tx ? ctx->tx_conf : ctx->rx_conf;
	453	+
	454	+ switch (config) {
	455	+ case TLS_BASE:
	456	+ return TLS_CONF_BASE;
	457	+ case TLS_SW:
	458	+ return TLS_CONF_SW;
	459	+ case TLS_HW:
	460	+ return TLS_CONF_HW;
	461	+ case TLS_HW_RECORD:
	462	+ return TLS_CONF_HW_RECORD;
	463	+ }
	464	+ return 0;
	465	+}
	466	+
324	467	struct sk_buff *
325	468	tls_validate_xmit_skb(struct sock sk, struct net_device dev,
326	469	struct sk_buff *skb);
	470	+struct sk_buff *
	471	+tls_validate_xmit_skb_sw(struct sock sk, struct net_device dev,
	472	+ struct sk_buff *skb);
327	473
328	474	static inline bool tls_is_sk_tx_device_offloaded(struct sock *sk)
329	475	{
..	..	@@ -334,12 +480,6 @@
334	480	#else
335	481	return false;
336	482	#endif
337		-}
338		-
339		-static inline void tls_err_abort(struct sock *sk, int err)
340		-{
341		- sk->sk_err = err;
342		- sk->sk_error_report(sk);
343	483	}
344	484
345	485	static inline bool tls_bigint_increment(unsigned char *seq, int len)
..	..	@@ -355,58 +495,102 @@
355	495	return (i == -1);
356	496	}
357	497
358		-static inline void tls_advance_record_sn(struct sock *sk,
359		- struct cipher_context *ctx)
	498	+static inline void tls_bigint_subtract(unsigned char *seq, int n)
360	499	{
361		- if (tls_bigint_increment(ctx->rec_seq, ctx->rec_seq_size))
362		- tls_err_abort(sk, EBADMSG);
363		- tls_bigint_increment(ctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE,
364		- ctx->iv_size);
365		-}
	500	+ u64 rcd_sn;
	501	+ __be64 *p;
366	502
367		-static inline void tls_fill_prepend(struct tls_context *ctx,
368		- char *buf,
369		- size_t plaintext_len,
370		- unsigned char record_type)
371		-{
372		- size_t pkt_len, iv_size = ctx->tx.iv_size;
	503	+ BUILD_BUG_ON(TLS_MAX_REC_SEQ_SIZE != 8);
373	504
374		- pkt_len = plaintext_len + iv_size + ctx->tx.tag_size;
375		-
376		- /* we cover nonce explicit here as well, so buf should be of
377		- * size KTLS_DTLS_HEADER_SIZE + KTLS_DTLS_NONCE_EXPLICIT_SIZE
378		- */
379		- buf[0] = record_type;
380		- buf[1] = TLS_VERSION_MINOR(ctx->crypto_send.info.version);
381		- buf[2] = TLS_VERSION_MAJOR(ctx->crypto_send.info.version);
382		- /* we can use IV for nonce explicit according to spec */
383		- buf[3] = pkt_len >> 8;
384		- buf[4] = pkt_len & 0xFF;
385		- memcpy(buf + TLS_NONCE_OFFSET,
386		- ctx->tx.iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, iv_size);
387		-}
388		-
389		-static inline void tls_make_aad(char *buf,
390		- size_t size,
391		- char *record_sequence,
392		- int record_sequence_size,
393		- unsigned char record_type)
394		-{
395		- memcpy(buf, record_sequence, record_sequence_size);
396		-
397		- buf[8] = record_type;
398		- buf[9] = TLS_1_2_VERSION_MAJOR;
399		- buf[10] = TLS_1_2_VERSION_MINOR;
400		- buf[11] = size >> 8;
401		- buf[12] = size & 0xFF;
	505	+ p = (__be64 *)seq;
	506	+ rcd_sn = be64_to_cpu(*p);
	507	+ *p = cpu_to_be64(rcd_sn - n);
402	508	}
403	509
404	510	static inline struct tls_context tls_get_ctx(const struct sock sk)
405	511	{
406	512	struct inet_connection_sock *icsk = inet_csk(sk);
407	513
408		- return icsk->icsk_ulp_data;
	514	+ /* Use RCU on icsk_ulp_data only for sock diag code,
	515	+ * TLS data path doesn't need rcu_dereference().
	516	+ */
	517	+ return (__force void *)icsk->icsk_ulp_data;
409	518	}
	519	+
	520	+static inline void tls_advance_record_sn(struct sock *sk,
	521	+ struct tls_prot_info *prot,
	522	+ struct cipher_context *ctx)
	523	+{
	524	+ if (tls_bigint_increment(ctx->rec_seq, prot->rec_seq_size))
	525	+ tls_err_abort(sk, -EBADMSG);
	526	+
	527	+ if (prot->version != TLS_1_3_VERSION)
	528	+ tls_bigint_increment(ctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE,
	529	+ prot->iv_size);
	530	+}
	531	+
	532	+static inline void tls_fill_prepend(struct tls_context *ctx,
	533	+ char *buf,
	534	+ size_t plaintext_len,
	535	+ unsigned char record_type,
	536	+ int version)
	537	+{
	538	+ struct tls_prot_info *prot = &ctx->prot_info;
	539	+ size_t pkt_len, iv_size = prot->iv_size;
	540	+
	541	+ pkt_len = plaintext_len + prot->tag_size;
	542	+ if (version != TLS_1_3_VERSION) {
	543	+ pkt_len += iv_size;
	544	+
	545	+ memcpy(buf + TLS_NONCE_OFFSET,
	546	+ ctx->tx.iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, iv_size);
	547	+ }
	548	+
	549	+ /* we cover nonce explicit here as well, so buf should be of
	550	+ * size KTLS_DTLS_HEADER_SIZE + KTLS_DTLS_NONCE_EXPLICIT_SIZE
	551	+ */
	552	+ buf[0] = version == TLS_1_3_VERSION ?
	553	+ TLS_RECORD_TYPE_DATA : record_type;
	554	+ /* Note that VERSION must be TLS_1_2 for both TLS1.2 and TLS1.3 */
	555	+ buf[1] = TLS_1_2_VERSION_MINOR;
	556	+ buf[2] = TLS_1_2_VERSION_MAJOR;
	557	+ /* we can use IV for nonce explicit according to spec */
	558	+ buf[3] = pkt_len >> 8;
	559	+ buf[4] = pkt_len & 0xFF;
	560	+}
	561	+
	562	+static inline void tls_make_aad(char *buf,
	563	+ size_t size,
	564	+ char *record_sequence,
	565	+ int record_sequence_size,
	566	+ unsigned char record_type,
	567	+ int version)
	568	+{
	569	+ if (version != TLS_1_3_VERSION) {
	570	+ memcpy(buf, record_sequence, record_sequence_size);
	571	+ buf += 8;
	572	+ } else {
	573	+ size += TLS_CIPHER_AES_GCM_128_TAG_SIZE;
	574	+ }
	575	+
	576	+ buf[0] = version == TLS_1_3_VERSION ?
	577	+ TLS_RECORD_TYPE_DATA : record_type;
	578	+ buf[1] = TLS_1_2_VERSION_MAJOR;
	579	+ buf[2] = TLS_1_2_VERSION_MINOR;
	580	+ buf[3] = size >> 8;
	581	+ buf[4] = size & 0xFF;
	582	+}
	583	+
	584	+static inline void xor_iv_with_seq(int version, char iv, char seq)
	585	+{
	586	+ int i;
	587	+
	588	+ if (version == TLS_1_3_VERSION) {
	589	+ for (i = 0; i < 8; i++)
	590	+ iv[i + 4] ^= seq[i];
	591	+ }
	592	+}
	593	+
410	594
411	595	static inline struct tls_sw_context_rx *tls_sw_ctx_rx(
412	596	const struct tls_context *tls_ctx)
..	..	@@ -426,41 +610,163 @@
426	610	return (struct tls_offload_context_tx *)tls_ctx->priv_ctx_tx;
427	611	}
428	612
	613	+static inline bool tls_sw_has_ctx_tx(const struct sock *sk)
	614	+{
	615	+ struct tls_context *ctx = tls_get_ctx(sk);
	616	+
	617	+ if (!ctx)
	618	+ return false;
	619	+ return !!tls_sw_ctx_tx(ctx);
	620	+}
	621	+
	622	+static inline bool tls_sw_has_ctx_rx(const struct sock *sk)
	623	+{
	624	+ struct tls_context *ctx = tls_get_ctx(sk);
	625	+
	626	+ if (!ctx)
	627	+ return false;
	628	+ return !!tls_sw_ctx_rx(ctx);
	629	+}
	630	+
	631	+void tls_sw_write_space(struct sock sk, struct tls_context ctx);
	632	+void tls_device_write_space(struct sock sk, struct tls_context ctx);
	633	+
429	634	static inline struct tls_offload_context_rx *
430	635	tls_offload_ctx_rx(const struct tls_context *tls_ctx)
431	636	{
432	637	return (struct tls_offload_context_rx *)tls_ctx->priv_ctx_rx;
433	638	}
434	639
	640	+#if IS_ENABLED(CONFIG_TLS_DEVICE)
	641	+static inline void __tls_driver_ctx(struct tls_context tls_ctx,
	642	+ enum tls_offload_ctx_dir direction)
	643	+{
	644	+ if (direction == TLS_OFFLOAD_CTX_DIR_TX)
	645	+ return tls_offload_ctx_tx(tls_ctx)->driver_state;
	646	+ else
	647	+ return tls_offload_ctx_rx(tls_ctx)->driver_state;
	648	+}
	649	+
	650	+static inline void *
	651	+tls_driver_ctx(const struct sock *sk, enum tls_offload_ctx_dir direction)
	652	+{
	653	+ return __tls_driver_ctx(tls_get_ctx(sk), direction);
	654	+}
	655	+#endif
	656	+
	657	+#define RESYNC_REQ BIT(0)
	658	+#define RESYNC_REQ_ASYNC BIT(1)
435	659	/* The TLS context is valid until sk_destruct is called */
436	660	static inline void tls_offload_rx_resync_request(struct sock *sk, __be32 seq)
437	661	{
438	662	struct tls_context *tls_ctx = tls_get_ctx(sk);
439	663	struct tls_offload_context_rx *rx_ctx = tls_offload_ctx_rx(tls_ctx);
440	664
441		- atomic64_set(&rx_ctx->resync_req, ((((uint64_t)seq) << 32) \| 1));
	665	+ atomic64_set(&rx_ctx->resync_req, ((u64)ntohl(seq) << 32) \| RESYNC_REQ);
442	666	}
443	667
	668	+/* Log all TLS record header TCP sequences in [seq, seq+len] */
	669	+static inline void
	670	+tls_offload_rx_resync_async_request_start(struct sock *sk, __be32 seq, u16 len)
	671	+{
	672	+ struct tls_context *tls_ctx = tls_get_ctx(sk);
	673	+ struct tls_offload_context_rx *rx_ctx = tls_offload_ctx_rx(tls_ctx);
	674	+
	675	+ atomic64_set(&rx_ctx->resync_async->req, ((u64)ntohl(seq) << 32) \|
	676	+ ((u64)len << 16) \| RESYNC_REQ \| RESYNC_REQ_ASYNC);
	677	+ rx_ctx->resync_async->loglen = 0;
	678	+ rx_ctx->resync_async->rcd_delta = 0;
	679	+}
	680	+
	681	+static inline void
	682	+tls_offload_rx_resync_async_request_end(struct sock *sk, __be32 seq)
	683	+{
	684	+ struct tls_context *tls_ctx = tls_get_ctx(sk);
	685	+ struct tls_offload_context_rx *rx_ctx = tls_offload_ctx_rx(tls_ctx);
	686	+
	687	+ atomic64_set(&rx_ctx->resync_async->req,
	688	+ ((u64)ntohl(seq) << 32) \| RESYNC_REQ);
	689	+}
	690	+
	691	+static inline void
	692	+tls_offload_rx_resync_set_type(struct sock *sk, enum tls_offload_sync_type type)
	693	+{
	694	+ struct tls_context *tls_ctx = tls_get_ctx(sk);
	695	+
	696	+ tls_offload_ctx_rx(tls_ctx)->resync_type = type;
	697	+}
	698	+
	699	+/* Driver's seq tracking has to be disabled until resync succeeded */
	700	+static inline bool tls_offload_tx_resync_pending(struct sock *sk)
	701	+{
	702	+ struct tls_context *tls_ctx = tls_get_ctx(sk);
	703	+ bool ret;
	704	+
	705	+ ret = test_bit(TLS_TX_SYNC_SCHED, &tls_ctx->flags);
	706	+ smp_mb__after_atomic();
	707	+ return ret;
	708	+}
	709	+
	710	+int __net_init tls_proc_init(struct net *net);
	711	+void __net_exit tls_proc_fini(struct net *net);
444	712
445	713	int tls_proccess_cmsg(struct sock sk, struct msghdr msg,
446	714	unsigned char *record_type);
447		-void tls_register_device(struct tls_device *device);
448		-void tls_unregister_device(struct tls_device *device);
449		-int tls_device_decrypted(struct sock sk, struct sk_buff skb);
450	715	int decrypt_skb(struct sock sk, struct sk_buff skb,
451	716	struct scatterlist *sgout);
452		-
453		-struct sk_buff tls_validate_xmit_skb(struct sock sk,
454		- struct net_device *dev,
455		- struct sk_buff *skb);
	717	+struct sk_buff tls_encrypt_skb(struct sk_buff skb);
456	718
457	719	int tls_sw_fallback_init(struct sock *sk,
458	720	struct tls_offload_context_tx *offload_ctx,
459	721	struct tls_crypto_info *crypto_info);
460	722
	723	+#ifdef CONFIG_TLS_DEVICE
	724	+int tls_device_init(void);
	725	+void tls_device_cleanup(void);
	726	+void tls_device_sk_destruct(struct sock *sk);
	727	+int tls_set_device_offload(struct sock sk, struct tls_context ctx);
	728	+void tls_device_free_resources_tx(struct sock *sk);
461	729	int tls_set_device_offload_rx(struct sock sk, struct tls_context ctx);
462		-
463	730	void tls_device_offload_cleanup_rx(struct sock *sk);
464		-void handle_device_resync(struct sock *sk, u32 seq, u64 rcd_sn);
	731	+void tls_device_rx_resync_new_rec(struct sock *sk, u32 rcd_len, u32 seq);
	732	+void tls_offload_tx_resync_request(struct sock *sk, u32 got_seq, u32 exp_seq);
	733	+int tls_device_decrypted(struct sock sk, struct tls_context tls_ctx,
	734	+ struct sk_buff skb, struct strp_msg rxm);
465	735
	736	+static inline bool tls_is_sk_rx_device_offloaded(struct sock *sk)
	737	+{
	738	+ if (!sk_fullsock(sk) \|\|
	739	+ smp_load_acquire(&sk->sk_destruct) != tls_device_sk_destruct)
	740	+ return false;
	741	+ return tls_get_ctx(sk)->rx_conf == TLS_HW;
	742	+}
	743	+#else
	744	+static inline int tls_device_init(void) { return 0; }
	745	+static inline void tls_device_cleanup(void) {}
	746	+
	747	+static inline int
	748	+tls_set_device_offload(struct sock sk, struct tls_context ctx)
	749	+{
	750	+ return -EOPNOTSUPP;
	751	+}
	752	+
	753	+static inline void tls_device_free_resources_tx(struct sock *sk) {}
	754	+
	755	+static inline int
	756	+tls_set_device_offload_rx(struct sock sk, struct tls_context ctx)
	757	+{
	758	+ return -EOPNOTSUPP;
	759	+}
	760	+
	761	+static inline void tls_device_offload_cleanup_rx(struct sock *sk) {}
	762	+static inline void
	763	+tls_device_rx_resync_new_rec(struct sock *sk, u32 rcd_len, u32 seq) {}
	764	+
	765	+static inline int
	766	+tls_device_decrypted(struct sock sk, struct tls_context tls_ctx,
	767	+ struct sk_buff skb, struct strp_msg rxm)
	768	+{
	769	+ return 0;
	770	+}
	771	+#endif
466	772	#endif /* _TLS_OFFLOAD_H */