1 /* $OpenBSD: ip_ah.h,v 1.28 2001/06/25 05:11:58 angelos Exp $ */ 2 /* 3 * The authors of this code are John Ioannidis (ji@tla.org), 4 * Angelos D. Keromytis (kermit@csd.uch.gr) and 5 * Niels Provos (provos@physnet.uni-hamburg.de). 6 * 7 * The original version of this code was written by John Ioannidis 8 * for BSD/OS in Athens, Greece, in November 1995. 9 * 10 * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996, 11 * by Angelos D. Keromytis. 12 * 13 * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis 14 * and Niels Provos. 15 * 16 * Additional features in 1999 by Angelos D. Keromytis. 17 * 18 * Copyright (C) 1995, 1996, 1997, 1998, 1999 John Ioannidis, 19 * Angelos D. Keromytis and Niels Provos. 20 * Copyright (c) 2001 Angelos D. Keromytis. 21 * 22 * Permission to use, copy, and modify this software with or without fee 23 * is hereby granted, provided that this entire notice is included in 24 * all copies of any software which is or includes a copy or 25 * modification of this software. 26 * You may use this code under the GNU public license if you so wish. Please 27 * contribute changes back to the authors under this freer than GPL license 28 * so that we may further the use of strong encryption without limitations to 29 * all. 30 * 31 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR 32 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY 33 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE 34 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR 35 * PURPOSE. 36 */ 37 38 #ifndef _NETINET_IP_AH_H_ 39 #define _NETINET_IP_AH_H_ 40 41 struct ahstat 42 { 43 u_int32_t ahs_hdrops; /* Packet shorter than header shows */ 44 u_int32_t ahs_nopf; /* Protocol family not supported */ 45 u_int32_t ahs_notdb; 46 u_int32_t ahs_badkcr; 47 u_int32_t ahs_badauth; 48 u_int32_t ahs_noxform; 49 u_int32_t ahs_qfull; 50 u_int32_t ahs_wrap; 51 u_int32_t ahs_replay; 52 u_int32_t ahs_badauthl; /* Bad authenticator length */ 53 u_int32_t ahs_input; /* Input AH packets */ 54 u_int32_t ahs_output; /* Output AH packets */ 55 u_int32_t ahs_invalid; /* Trying to use an invalid TDB */ 56 u_int64_t ahs_ibytes; /* Input bytes */ 57 u_int64_t ahs_obytes; /* Output bytes */ 58 u_int32_t ahs_toobig; /* Packet got larger than IP_MAXPACKET */ 59 u_int32_t ahs_pdrops; /* Packet blocked due to policy */ 60 u_int32_t ahs_crypto; /* Crypto processing failure */ 61 }; 62 63 struct ah 64 { 65 u_int8_t ah_nh; 66 u_int8_t ah_hl; 67 u_int16_t ah_rv; 68 u_int32_t ah_spi; 69 u_int32_t ah_rpl; /* We may not use this, if we're using old xforms */ 70 }; 71 72 /* Length of base AH header */ 73 #define AH_FLENGTH 8 74 75 /* Size of the largest hash function output used in AH-new, in bytes */ 76 #define AH_MAX_HASHLEN 20 77 78 /* 79 * Names for AH sysctl objects 80 */ 81 #define AHCTL_ENABLE 1 /* Enable AH processing */ 82 #define AHCTL_MAXID 2 83 84 #define AHCTL_NAMES { \ 85 { 0, 0 }, \ 86 { "enable", CTLTYPE_INT }, \ 87 } 88 89 #ifdef _KERNEL 90 extern int ah_enable; 91 struct ahstat ahstat; 92 #endif /* _KERNEL */ 93 #endif /* _NETINET_IP_AH_H_ */ 94