1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (c) 2018 Chelsio Communications, Inc.
4 */
5
6#ifndef __CHTLS_H__
7#define __CHTLS_H__
8
9#include <crypto/aes.h>
10#include <crypto/hash.h>
11#include <crypto/sha1.h>
12#include <crypto/sha2.h>
13#include <crypto/authenc.h>
14#include <crypto/ctr.h>
15#include <crypto/gf128mul.h>
16#include <crypto/internal/aead.h>
17#include <crypto/null.h>
18#include <crypto/internal/skcipher.h>
19#include <crypto/aead.h>
20#include <crypto/scatterwalk.h>
21#include <crypto/internal/hash.h>
22#include <linux/tls.h>
23#include <net/tls.h>
24#include <net/tls_prot.h>
25#include <net/tls_toe.h>
26
27#include "t4fw_api.h"
28#include "t4_msg.h"
29#include "cxgb4.h"
30#include "cxgb4_uld.h"
31#include "l2t.h"
32#include "chcr_algo.h"
33#include "chcr_core.h"
34#include "chcr_crypto.h"
35
36#define CHTLS_DRV_VERSION "1.0.0.0-ko"
37
38#define TLS_KEYCTX_RXFLIT_CNT_S 24
39#define TLS_KEYCTX_RXFLIT_CNT_V(x) ((x) << TLS_KEYCTX_RXFLIT_CNT_S)
40
41#define TLS_KEYCTX_RXPROT_VER_S 20
42#define TLS_KEYCTX_RXPROT_VER_M 0xf
43#define TLS_KEYCTX_RXPROT_VER_V(x) ((x) << TLS_KEYCTX_RXPROT_VER_S)
44
45#define TLS_KEYCTX_RXCIPH_MODE_S 16
46#define TLS_KEYCTX_RXCIPH_MODE_M 0xf
47#define TLS_KEYCTX_RXCIPH_MODE_V(x) ((x) << TLS_KEYCTX_RXCIPH_MODE_S)
48
49#define TLS_KEYCTX_RXAUTH_MODE_S 12
50#define TLS_KEYCTX_RXAUTH_MODE_M 0xf
51#define TLS_KEYCTX_RXAUTH_MODE_V(x) ((x) << TLS_KEYCTX_RXAUTH_MODE_S)
52
53#define TLS_KEYCTX_RXCIAU_CTRL_S 11
54#define TLS_KEYCTX_RXCIAU_CTRL_V(x) ((x) << TLS_KEYCTX_RXCIAU_CTRL_S)
55
56#define TLS_KEYCTX_RX_SEQCTR_S 9
57#define TLS_KEYCTX_RX_SEQCTR_M 0x3
58#define TLS_KEYCTX_RX_SEQCTR_V(x) ((x) << TLS_KEYCTX_RX_SEQCTR_S)
59
60#define TLS_KEYCTX_RX_VALID_S 8
61#define TLS_KEYCTX_RX_VALID_V(x) ((x) << TLS_KEYCTX_RX_VALID_S)
62
63#define TLS_KEYCTX_RXCK_SIZE_S 3
64#define TLS_KEYCTX_RXCK_SIZE_M 0x7
65#define TLS_KEYCTX_RXCK_SIZE_V(x) ((x) << TLS_KEYCTX_RXCK_SIZE_S)
66
67#define TLS_KEYCTX_RXMK_SIZE_S 0
68#define TLS_KEYCTX_RXMK_SIZE_M 0x7
69#define TLS_KEYCTX_RXMK_SIZE_V(x) ((x) << TLS_KEYCTX_RXMK_SIZE_S)
70
71#define KEYCTX_TX_WR_IV_S  55
72#define KEYCTX_TX_WR_IV_M  0x1ffULL
73#define KEYCTX_TX_WR_IV_V(x) ((x) << KEYCTX_TX_WR_IV_S)
74#define KEYCTX_TX_WR_IV_G(x) \
75	(((x) >> KEYCTX_TX_WR_IV_S) & KEYCTX_TX_WR_IV_M)
76
77#define KEYCTX_TX_WR_AAD_S 47
78#define KEYCTX_TX_WR_AAD_M 0xffULL
79#define KEYCTX_TX_WR_AAD_V(x) ((x) << KEYCTX_TX_WR_AAD_S)
80#define KEYCTX_TX_WR_AAD_G(x) (((x) >> KEYCTX_TX_WR_AAD_S) & \
81				KEYCTX_TX_WR_AAD_M)
82
83#define KEYCTX_TX_WR_AADST_S 39
84#define KEYCTX_TX_WR_AADST_M 0xffULL
85#define KEYCTX_TX_WR_AADST_V(x) ((x) << KEYCTX_TX_WR_AADST_S)
86#define KEYCTX_TX_WR_AADST_G(x) \
87	(((x) >> KEYCTX_TX_WR_AADST_S) & KEYCTX_TX_WR_AADST_M)
88
89#define KEYCTX_TX_WR_CIPHER_S 30
90#define KEYCTX_TX_WR_CIPHER_M 0x1ffULL
91#define KEYCTX_TX_WR_CIPHER_V(x) ((x) << KEYCTX_TX_WR_CIPHER_S)
92#define KEYCTX_TX_WR_CIPHER_G(x) \
93	(((x) >> KEYCTX_TX_WR_CIPHER_S) & KEYCTX_TX_WR_CIPHER_M)
94
95#define KEYCTX_TX_WR_CIPHERST_S 23
96#define KEYCTX_TX_WR_CIPHERST_M 0x7f
97#define KEYCTX_TX_WR_CIPHERST_V(x) ((x) << KEYCTX_TX_WR_CIPHERST_S)
98#define KEYCTX_TX_WR_CIPHERST_G(x) \
99	(((x) >> KEYCTX_TX_WR_CIPHERST_S) & KEYCTX_TX_WR_CIPHERST_M)
100
101#define KEYCTX_TX_WR_AUTH_S 14
102#define KEYCTX_TX_WR_AUTH_M 0x1ff
103#define KEYCTX_TX_WR_AUTH_V(x) ((x) << KEYCTX_TX_WR_AUTH_S)
104#define KEYCTX_TX_WR_AUTH_G(x) \
105	(((x) >> KEYCTX_TX_WR_AUTH_S) & KEYCTX_TX_WR_AUTH_M)
106
107#define KEYCTX_TX_WR_AUTHST_S 7
108#define KEYCTX_TX_WR_AUTHST_M 0x7f
109#define KEYCTX_TX_WR_AUTHST_V(x) ((x) << KEYCTX_TX_WR_AUTHST_S)
110#define KEYCTX_TX_WR_AUTHST_G(x) \
111	(((x) >> KEYCTX_TX_WR_AUTHST_S) & KEYCTX_TX_WR_AUTHST_M)
112
113#define KEYCTX_TX_WR_AUTHIN_S 0
114#define KEYCTX_TX_WR_AUTHIN_M 0x7f
115#define KEYCTX_TX_WR_AUTHIN_V(x) ((x) << KEYCTX_TX_WR_AUTHIN_S)
116#define KEYCTX_TX_WR_AUTHIN_G(x) \
117	(((x) >> KEYCTX_TX_WR_AUTHIN_S) & KEYCTX_TX_WR_AUTHIN_M)
118
119struct sge_opaque_hdr {
120	void *dev;
121	dma_addr_t addr[MAX_SKB_FRAGS + 1];
122};
123
124#define MAX_IVS_PAGE			256
125#define TLS_KEY_CONTEXT_SZ		64
126#define CIPHER_BLOCK_SIZE		16
127#define GCM_TAG_SIZE			16
128#define KEY_ON_MEM_SZ			16
129#define AEAD_EXPLICIT_DATA_SIZE		8
130#define TLS_HEADER_LENGTH		5
131#define SCMD_CIPH_MODE_AES_GCM		2
132/* Any MFS size should work and come from openssl */
133#define TLS_MFS				16384
134
135#define RSS_HDR sizeof(struct rss_header)
136#define TLS_WR_CPL_LEN \
137	(sizeof(struct fw_tlstx_data_wr) + sizeof(struct cpl_tx_tls_sfo))
138
139enum {
140	CHTLS_KEY_CONTEXT_DSGL,
141	CHTLS_KEY_CONTEXT_IMM,
142	CHTLS_KEY_CONTEXT_DDR,
143};
144
145enum {
146	CHTLS_LISTEN_START,
147	CHTLS_LISTEN_STOP,
148};
149
150/* Flags for return value of CPL message handlers */
151enum {
152	CPL_RET_BUF_DONE =    1,   /* buffer processing done */
153	CPL_RET_BAD_MSG =     2,   /* bad CPL message */
154	CPL_RET_UNKNOWN_TID = 4    /* unexpected unknown TID */
155};
156
157#define LISTEN_INFO_HASH_SIZE 32
158#define RSPQ_HASH_BITS 5
159struct listen_info {
160	struct listen_info *next;  /* Link to next entry */
161	struct sock *sk;           /* The listening socket */
162	unsigned int stid;         /* The server TID */
163};
164
165enum {
166	T4_LISTEN_START_PENDING,
167	T4_LISTEN_STARTED
168};
169
170enum csk_flags {
171	CSK_CALLBACKS_CHKD,	/* socket callbacks have been sanitized */
172	CSK_ABORT_REQ_RCVD,	/* received one ABORT_REQ_RSS message */
173	CSK_TX_MORE_DATA,	/* sending ULP data; don't set SHOVE bit */
174	CSK_TX_WAIT_IDLE,	/* suspend Tx until in-flight data is ACKed */
175	CSK_ABORT_SHUTDOWN,	/* shouldn't send more abort requests */
176	CSK_ABORT_RPL_PENDING,	/* expecting an abort reply */
177	CSK_CLOSE_CON_REQUESTED,/* we've sent a close_conn_req */
178	CSK_TX_DATA_SENT,	/* sent a TX_DATA WR on this connection */
179	CSK_TX_FAILOVER,	/* Tx traffic failing over */
180	CSK_UPDATE_RCV_WND,	/* Need to update rcv window */
181	CSK_RST_ABORTED,	/* outgoing RST was aborted */
182	CSK_TLS_HANDSHK,	/* TLS Handshake */
183	CSK_CONN_INLINE,	/* Connection on HW */
184};
185
186enum chtls_cdev_state {
187	CHTLS_CDEV_STATE_UP = 1
188};
189
190struct listen_ctx {
191	struct sock *lsk;
192	struct chtls_dev *cdev;
193	struct sk_buff_head synq;
194	u32 state;
195};
196
197struct key_map {
198	unsigned long *addr;
199	unsigned int start;
200	unsigned int available;
201	unsigned int size;
202	spinlock_t lock; /* lock for key id request from map */
203} __packed;
204
205struct tls_scmd {
206	u32 seqno_numivs;
207	u32 ivgen_hdrlen;
208};
209
210struct chtls_dev {
211	struct tls_toe_device tlsdev;
212	struct list_head list;
213	struct cxgb4_lld_info *lldi;
214	struct pci_dev *pdev;
215	struct listen_info *listen_hash_tab[LISTEN_INFO_HASH_SIZE];
216	spinlock_t listen_lock; /* lock for listen list */
217	struct net_device **ports;
218	struct tid_info *tids;
219	unsigned int pfvf;
220	const unsigned short *mtus;
221
222	struct idr hwtid_idr;
223	struct idr stid_idr;
224
225	spinlock_t idr_lock ____cacheline_aligned_in_smp;
226
227	struct net_device *egr_dev[NCHAN * 2];
228	struct sk_buff *rspq_skb_cache[1 << RSPQ_HASH_BITS];
229	struct sk_buff *askb;
230
231	struct sk_buff_head deferq;
232	struct work_struct deferq_task;
233
234	struct list_head list_node;
235	struct list_head rcu_node;
236	struct list_head na_node;
237	unsigned int send_page_order;
238	int max_host_sndbuf;
239	u32 round_robin_cnt;
240	struct key_map kmap;
241	unsigned int cdev_state;
242};
243
244struct chtls_listen {
245	struct chtls_dev *cdev;
246	struct sock *sk;
247};
248
249struct chtls_hws {
250	struct sk_buff_head sk_recv_queue;
251	u8 txqid;
252	u8 ofld;
253	u16 type;
254	u16 rstate;
255	u16 keyrpl;
256	u16 pldlen;
257	u16 rcvpld;
258	u16 compute;
259	u16 expansion;
260	u16 keylen;
261	u16 pdus;
262	u16 adjustlen;
263	u16 ivsize;
264	u16 txleft;
265	u32 mfs;
266	s32 txkey;
267	s32 rxkey;
268	u32 fcplenmax;
269	u32 copied_seq;
270	u64 tx_seq_no;
271	struct tls_scmd scmd;
272	union {
273		struct tls12_crypto_info_aes_gcm_128 aes_gcm_128;
274		struct tls12_crypto_info_aes_gcm_256 aes_gcm_256;
275	} crypto_info;
276};
277
278struct chtls_sock {
279	struct sock *sk;
280	struct chtls_dev *cdev;
281	struct l2t_entry *l2t_entry;    /* pointer to the L2T entry */
282	struct net_device *egress_dev;  /* TX_CHAN for act open retry */
283
284	struct sk_buff_head txq;
285	struct sk_buff *wr_skb_head;
286	struct sk_buff *wr_skb_tail;
287	struct sk_buff *ctrl_skb_cache;
288	struct sk_buff *txdata_skb_cache; /* abort path messages */
289	struct kref kref;
290	unsigned long flags;
291	u32 opt2;
292	u32 wr_credits;
293	u32 wr_unacked;
294	u32 wr_max_credits;
295	u32 wr_nondata;
296	u32 hwtid;               /* TCP Control Block ID */
297	u32 txq_idx;
298	u32 rss_qid;
299	u32 tid;
300	u32 idr;
301	u32 mss;
302	u32 ulp_mode;
303	u32 tx_chan;
304	u32 rx_chan;
305	u32 sndbuf;
306	u32 txplen_max;
307	u32 mtu_idx;           /* MTU table index */
308	u32 smac_idx;
309	u8 port_id;
310	u8 tos;
311	u16 resv2;
312	u32 delack_mode;
313	u32 delack_seq;
314	u32 snd_win;
315	u32 rcv_win;
316
317	void *passive_reap_next;        /* placeholder for passive */
318	struct chtls_hws tlshws;
319	struct synq {
320		struct sk_buff *next;
321		struct sk_buff *prev;
322	} synq;
323	struct listen_ctx *listen_ctx;
324};
325
326struct tls_hdr {
327	u8  type;
328	u16 version;
329	u16 length;
330} __packed;
331
332struct tlsrx_cmp_hdr {
333	u8  type;
334	u16 version;
335	u16 length;
336
337	u64 tls_seq;
338	u16 reserved1;
339	u8  res_to_mac_error;
340} __packed;
341
342/* res_to_mac_error fields */
343#define TLSRX_HDR_PKT_INT_ERROR_S   4
344#define TLSRX_HDR_PKT_INT_ERROR_M   0x1
345#define TLSRX_HDR_PKT_INT_ERROR_V(x) \
346	((x) << TLSRX_HDR_PKT_INT_ERROR_S)
347#define TLSRX_HDR_PKT_INT_ERROR_G(x) \
348	(((x) >> TLSRX_HDR_PKT_INT_ERROR_S) & TLSRX_HDR_PKT_INT_ERROR_M)
349#define TLSRX_HDR_PKT_INT_ERROR_F   TLSRX_HDR_PKT_INT_ERROR_V(1U)
350
351#define TLSRX_HDR_PKT_SPP_ERROR_S        3
352#define TLSRX_HDR_PKT_SPP_ERROR_M        0x1
353#define TLSRX_HDR_PKT_SPP_ERROR_V(x)     ((x) << TLSRX_HDR_PKT_SPP_ERROR)
354#define TLSRX_HDR_PKT_SPP_ERROR_G(x)     \
355	(((x) >> TLSRX_HDR_PKT_SPP_ERROR_S) & TLSRX_HDR_PKT_SPP_ERROR_M)
356#define TLSRX_HDR_PKT_SPP_ERROR_F        TLSRX_HDR_PKT_SPP_ERROR_V(1U)
357
358#define TLSRX_HDR_PKT_CCDX_ERROR_S       2
359#define TLSRX_HDR_PKT_CCDX_ERROR_M       0x1
360#define TLSRX_HDR_PKT_CCDX_ERROR_V(x)    ((x) << TLSRX_HDR_PKT_CCDX_ERROR_S)
361#define TLSRX_HDR_PKT_CCDX_ERROR_G(x)    \
362	(((x) >> TLSRX_HDR_PKT_CCDX_ERROR_S) & TLSRX_HDR_PKT_CCDX_ERROR_M)
363#define TLSRX_HDR_PKT_CCDX_ERROR_F       TLSRX_HDR_PKT_CCDX_ERROR_V(1U)
364
365#define TLSRX_HDR_PKT_PAD_ERROR_S        1
366#define TLSRX_HDR_PKT_PAD_ERROR_M        0x1
367#define TLSRX_HDR_PKT_PAD_ERROR_V(x)     ((x) << TLSRX_HDR_PKT_PAD_ERROR_S)
368#define TLSRX_HDR_PKT_PAD_ERROR_G(x)     \
369	(((x) >> TLSRX_HDR_PKT_PAD_ERROR_S) & TLSRX_HDR_PKT_PAD_ERROR_M)
370#define TLSRX_HDR_PKT_PAD_ERROR_F        TLSRX_HDR_PKT_PAD_ERROR_V(1U)
371
372#define TLSRX_HDR_PKT_MAC_ERROR_S        0
373#define TLSRX_HDR_PKT_MAC_ERROR_M        0x1
374#define TLSRX_HDR_PKT_MAC_ERROR_V(x)     ((x) << TLSRX_HDR_PKT_MAC_ERROR)
375#define TLSRX_HDR_PKT_MAC_ERROR_G(x)     \
376	(((x) >> S_TLSRX_HDR_PKT_MAC_ERROR_S) & TLSRX_HDR_PKT_MAC_ERROR_M)
377#define TLSRX_HDR_PKT_MAC_ERROR_F        TLSRX_HDR_PKT_MAC_ERROR_V(1U)
378
379#define TLSRX_HDR_PKT_ERROR_M           0x1F
380#define CONTENT_TYPE_ERROR		0x7F
381
382struct ulp_mem_rw {
383	__be32 cmd;
384	__be32 len16;             /* command length */
385	__be32 dlen;              /* data length in 32-byte units */
386	__be32 lock_addr;
387};
388
389struct tls_key_wr {
390	__be32 op_to_compl;
391	__be32 flowid_len16;
392	__be32 ftid;
393	u8   reneg_to_write_rx;
394	u8   protocol;
395	__be16 mfs;
396};
397
398struct tls_key_req {
399	struct tls_key_wr wr;
400	struct ulp_mem_rw req;
401	struct ulptx_idata sc_imm;
402};
403
404/*
405 * This lives in skb->cb and is used to chain WRs in a linked list.
406 */
407struct wr_skb_cb {
408	struct l2t_skb_cb l2t;          /* reserve space for l2t CB */
409	struct sk_buff *next_wr;        /* next write request */
410};
411
412/* Per-skb backlog handler.  Run when a socket's backlog is processed. */
413struct blog_skb_cb {
414	void (*backlog_rcv)(struct sock *sk, struct sk_buff *skb);
415	struct chtls_dev *cdev;
416};
417
418/*
419 * Similar to tcp_skb_cb but with ULP elements added to support TLS,
420 * etc.
421 */
422struct ulp_skb_cb {
423	struct wr_skb_cb wr;		/* reserve space for write request */
424	u16 flags;			/* TCP-like flags */
425	u8 psh;
426	u8 ulp_mode;			/* ULP mode/submode of sk_buff */
427	u32 seq;			/* TCP sequence number */
428	union { /* ULP-specific fields */
429		struct {
430			u8  type;
431			u8  ofld;
432			u8  iv;
433		} tls;
434	} ulp;
435};
436
437#define ULP_SKB_CB(skb) ((struct ulp_skb_cb *)&((skb)->cb[0]))
438#define BLOG_SKB_CB(skb) ((struct blog_skb_cb *)(skb)->cb)
439
440/*
441 * Flags for ulp_skb_cb.flags.
442 */
443enum {
444	ULPCB_FLAG_NEED_HDR  = 1 << 0,	/* packet needs a TX_DATA_WR header */
445	ULPCB_FLAG_NO_APPEND = 1 << 1,	/* don't grow this skb */
446	ULPCB_FLAG_BARRIER   = 1 << 2,	/* set TX_WAIT_IDLE after sending */
447	ULPCB_FLAG_HOLD      = 1 << 3,	/* skb not ready for Tx yet */
448	ULPCB_FLAG_COMPL     = 1 << 4,	/* request WR completion */
449	ULPCB_FLAG_URG       = 1 << 5,	/* urgent data */
450	ULPCB_FLAG_TLS_HDR   = 1 << 6,  /* payload with tls hdr */
451	ULPCB_FLAG_NO_HDR    = 1 << 7,  /* not a ofld wr */
452};
453
454/* The ULP mode/submode of an skbuff */
455#define skb_ulp_mode(skb)  (ULP_SKB_CB(skb)->ulp_mode)
456#define TCP_PAGE(sk)   (sk->sk_frag.page)
457#define TCP_OFF(sk)    (sk->sk_frag.offset)
458
459static inline struct chtls_dev *to_chtls_dev(struct tls_toe_device *tlsdev)
460{
461	return container_of(tlsdev, struct chtls_dev, tlsdev);
462}
463
464static inline void csk_set_flag(struct chtls_sock *csk,
465				enum csk_flags flag)
466{
467	__set_bit(flag, &csk->flags);
468}
469
470static inline void csk_reset_flag(struct chtls_sock *csk,
471				  enum csk_flags flag)
472{
473	__clear_bit(flag, &csk->flags);
474}
475
476static inline bool csk_conn_inline(const struct chtls_sock *csk)
477{
478	return test_bit(CSK_CONN_INLINE, &csk->flags);
479}
480
481static inline int csk_flag(const struct sock *sk, enum csk_flags flag)
482{
483	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
484
485	if (!csk_conn_inline(csk))
486		return 0;
487	return test_bit(flag, &csk->flags);
488}
489
490static inline int csk_flag_nochk(const struct chtls_sock *csk,
491				 enum csk_flags flag)
492{
493	return test_bit(flag, &csk->flags);
494}
495
496static inline void *cplhdr(struct sk_buff *skb)
497{
498	return skb->data;
499}
500
501static inline int is_neg_adv(unsigned int status)
502{
503	return status == CPL_ERR_RTX_NEG_ADVICE ||
504	       status == CPL_ERR_KEEPALV_NEG_ADVICE ||
505	       status == CPL_ERR_PERSIST_NEG_ADVICE;
506}
507
508static inline void process_cpl_msg(void (*fn)(struct sock *, struct sk_buff *),
509				   struct sock *sk,
510				   struct sk_buff *skb)
511{
512	skb_reset_mac_header(skb);
513	skb_reset_network_header(skb);
514	skb_reset_transport_header(skb);
515
516	bh_lock_sock(sk);
517	if (unlikely(sock_owned_by_user(sk))) {
518		BLOG_SKB_CB(skb)->backlog_rcv = fn;
519		__sk_add_backlog(sk, skb);
520	} else {
521		fn(sk, skb);
522	}
523	bh_unlock_sock(sk);
524}
525
526static inline void chtls_sock_free(struct kref *ref)
527{
528	struct chtls_sock *csk = container_of(ref, struct chtls_sock,
529					      kref);
530	kfree(csk);
531}
532
533static inline void __chtls_sock_put(const char *fn, struct chtls_sock *csk)
534{
535	kref_put(&csk->kref, chtls_sock_free);
536}
537
538static inline void __chtls_sock_get(const char *fn,
539				    struct chtls_sock *csk)
540{
541	kref_get(&csk->kref);
542}
543
544static inline void send_or_defer(struct sock *sk, struct tcp_sock *tp,
545				 struct sk_buff *skb, int through_l2t)
546{
547	struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
548
549	if (through_l2t) {
550		/* send through L2T */
551		cxgb4_l2t_send(csk->egress_dev, skb, csk->l2t_entry);
552	} else {
553		/* send directly */
554		cxgb4_ofld_send(csk->egress_dev, skb);
555	}
556}
557
558typedef int (*chtls_handler_func)(struct chtls_dev *, struct sk_buff *);
559extern chtls_handler_func chtls_handlers[NUM_CPL_CMDS];
560void chtls_install_cpl_ops(struct sock *sk);
561int chtls_init_kmap(struct chtls_dev *cdev, struct cxgb4_lld_info *lldi);
562void chtls_listen_stop(struct chtls_dev *cdev, struct sock *sk);
563int chtls_listen_start(struct chtls_dev *cdev, struct sock *sk);
564void chtls_close(struct sock *sk, long timeout);
565int chtls_disconnect(struct sock *sk, int flags);
566void chtls_shutdown(struct sock *sk, int how);
567void chtls_destroy_sock(struct sock *sk);
568int chtls_sendmsg(struct sock *sk, struct msghdr *msg, size_t size);
569int chtls_recvmsg(struct sock *sk, struct msghdr *msg,
570		  size_t len, int flags, int *addr_len);
571void chtls_splice_eof(struct socket *sock);
572int send_tx_flowc_wr(struct sock *sk, int compl,
573		     u32 snd_nxt, u32 rcv_nxt);
574void chtls_tcp_push(struct sock *sk, int flags);
575int chtls_push_frames(struct chtls_sock *csk, int comp);
576int chtls_set_tcb_tflag(struct sock *sk, unsigned int bit_pos, int val);
577void chtls_set_tcb_field_rpl_skb(struct sock *sk, u16 word,
578				 u64 mask, u64 val, u8 cookie,
579				 int through_l2t);
580int chtls_setkey(struct chtls_sock *csk, u32 keylen, u32 mode, int cipher_type);
581void chtls_set_quiesce_ctrl(struct sock *sk, int val);
582void skb_entail(struct sock *sk, struct sk_buff *skb, int flags);
583unsigned int keyid_to_addr(int start_addr, int keyid);
584void free_tls_keyid(struct sock *sk);
585#endif
586