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Annotation of sys/netinet/ip_ah.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: ip_ah.h,v 1.31 2004/02/17 12:07:45 markus 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: #define AHCTL_VARS { \
                     90:        NULL, \
                     91:        &ah_enable, \
                     92: }
                     93:
                     94: #ifdef _KERNEL
                     95: extern int ah_enable;
                     96: extern struct ahstat ahstat;
                     97: #endif /* _KERNEL */
                     98: #endif /* _NETINET_IP_AH_H_ */