1 /* $OpenBSD: ip_ah.h,v 1.36 2017/11/08 16:29:20 visa 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 uint64_t ahs_hdrops; /* Packet shorter than header shows */ 43 uint64_t ahs_nopf; /* Protocol family not supported */ 44 uint64_t ahs_notdb; 45 uint64_t ahs_badkcr; 46 uint64_t ahs_badauth; 47 uint64_t ahs_noxform; 48 uint64_t ahs_qfull; 49 uint64_t ahs_wrap; 50 uint64_t ahs_replay; 51 uint64_t ahs_badauthl; /* Bad authenticator length */ 52 uint64_t ahs_input; /* Input AH packets */ 53 uint64_t ahs_output; /* Output AH packets */ 54 uint64_t ahs_invalid; /* Trying to use an invalid TDB */ 55 uint64_t ahs_ibytes; /* Input bytes */ 56 uint64_t ahs_obytes; /* Output bytes */ 57 uint64_t ahs_toobig; /* Packet got larger than 58 * IP_MAXPACKET */ 59 uint64_t ahs_pdrops; /* Packet blocked due to policy */ 60 uint64_t ahs_crypto; /* Crypto processing failure */ 61 uint64_t ahs_outfail; /* Packet output failure */ 62 }; 63 64 struct ah { 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 /* 76 * Names for AH sysctl objects 77 */ 78 #define AHCTL_ENABLE 1 /* Enable AH processing */ 79 #define AHCTL_STATS 2 /* AH stats */ 80 #define AHCTL_MAXID 3 81 82 #define AHCTL_NAMES { \ 83 { 0, 0 }, \ 84 { "enable", CTLTYPE_INT }, \ 85 { "stats", CTLTYPE_STRUCT } \ 86 } 87 88 #define AHCTL_VARS { \ 89 NULL, \ 90 &ah_enable, \ 91 NULL \ 92 } 93 94 #ifdef _KERNEL 95 96 #include <sys/percpu.h> 97 98 enum ahstat_counters { 99 ahs_hdrops, /* Packet shorter than header shows */ 100 ahs_nopf, /* Protocol family not supported */ 101 ahs_notdb, 102 ahs_badkcr, 103 ahs_badauth, 104 ahs_noxform, 105 ahs_qfull, 106 ahs_wrap, 107 ahs_replay, 108 ahs_badauthl, /* Bad authenticator length */ 109 ahs_input, /* Input AH packets */ 110 ahs_output, /* Output AH packets */ 111 ahs_invalid, /* Trying to use an invalid TDB */ 112 ahs_ibytes, /* Input bytes */ 113 ahs_obytes, /* Output bytes */ 114 ahs_toobig, /* Packet got larger than 115 * IP_MAXPACKET */ 116 ahs_pdrops, /* Packet blocked due to policy */ 117 ahs_crypto, /* Crypto processing failure */ 118 ahs_outfail, /* Packet output failure */ 119 120 ahs_ncounters 121 }; 122 123 extern struct cpumem *ahcounters; 124 125 static inline void 126 ahstat_inc(enum ahstat_counters c) 127 { 128 counters_inc(ahcounters, c); 129 } 130 131 static inline void 132 ahstat_add(enum ahstat_counters c, uint64_t v) 133 { 134 counters_add(ahcounters, c, v); 135 } 136 137 extern int ah_enable; 138 139 #endif /* _KERNEL */ 140 #endif /* _NETINET_IP_AH_H_ */ 141