1 /*- 2 * Copyright (c) 2015 Patrick Kelsey 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _TCP_FASTOPEN_H_ 30 #define _TCP_FASTOPEN_H_ 31 32 #ifdef _KERNEL 33 34 #define TCP_FASTOPEN_COOKIE_LEN 8 /* tied to SipHash24 64-bit output */ 35 36 VNET_DECLARE(unsigned int, tcp_fastopen_enabled); 37 #define V_tcp_fastopen_enabled VNET(tcp_fastopen_enabled) 38 39 void tcp_fastopen_init(void); 40 void tcp_fastopen_destroy(void); 41 unsigned int *tcp_fastopen_alloc_counter(void); 42 void tcp_fastopen_decrement_counter(unsigned int *counter); 43 int tcp_fastopen_check_cookie(struct in_conninfo *inc, uint8_t *cookie, 44 unsigned int len, uint64_t *latest_cookie); 45 #endif /* _KERNEL */ 46 47 #endif /* _TCP_FASTOPEN_H_ */ 48