1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2021 Netflix Inc.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#ifndef __OPENCRYPTO_KTLS_H__
29#define	__OPENCRYPTO_KTLS_H__
30
31#define	MAX_TLS_PAGES	(1 + btoc(TLS_MAX_MSG_SIZE_V10_2))
32
33struct ktls_ocf_encrypt_state {
34	struct socket *so;
35	struct mbuf *m;
36	void *cbuf;
37	struct iovec dst_iov[MAX_TLS_PAGES + 2];
38	vm_paddr_t parray[MAX_TLS_PAGES + 1];
39
40	struct cryptop crp;
41	struct uio uio;
42	union {
43		struct tls_mac_data mac;
44		struct tls_aead_data aead;
45		struct tls_aead_data_13 aead13;
46	};
47};
48
49void ktls_encrypt_cb(struct ktls_ocf_encrypt_state *state, int error);
50void ktls_ocf_free(struct ktls_session *tls);
51int ktls_ocf_try(struct socket *so, struct ktls_session *tls, int direction);
52int ktls_ocf_encrypt(struct ktls_ocf_encrypt_state *state,
53    struct ktls_session *tls, struct mbuf *m, struct iovec *outiov,
54    int outiovcnt);
55int ktls_ocf_decrypt(struct ktls_session *tls,
56    const struct tls_record_layer *hdr, struct mbuf *m, uint64_t seqno,
57    int *trailer_len);
58int ktls_ocf_recrypt(struct ktls_session *tls,
59    const struct tls_record_layer *hdr, struct mbuf *m, uint64_t seqno);
60bool ktls_ocf_recrypt_supported(struct ktls_session *tls);
61
62#endif	/* !__OPENCRYPTO_KTLS_H__ */
63