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 33 struct 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 49 void ktls_encrypt_cb(struct ktls_ocf_encrypt_state *state, int error); 50 void ktls_ocf_free(struct ktls_session *tls); 51 int ktls_ocf_try(struct socket *so, struct ktls_session *tls, int direction); 52 int ktls_ocf_encrypt(struct ktls_ocf_encrypt_state *state, 53 struct ktls_session *tls, struct mbuf *m, struct iovec *outiov, 54 int outiovcnt); 55 int ktls_ocf_decrypt(struct ktls_session *tls, 56 const struct tls_record_layer *hdr, struct mbuf *m, uint64_t seqno, 57 int *trailer_len); 58 int ktls_ocf_recrypt(struct ktls_session *tls, 59 const struct tls_record_layer *hdr, struct mbuf *m, uint64_t seqno); 60 bool ktls_ocf_recrypt_supported(struct ktls_session *tls); 61 62 #endif /* !__OPENCRYPTO_KTLS_H__ */ 63