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Annotation of 43BSD/sys/netns/ns_error.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1984, 1985, 1986 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)ns_error.h  7.1 (Berkeley) 6/5/86
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * Xerox NS error messages
        !            11:  */
        !            12: 
        !            13: struct ns_errp {
        !            14:        u_short         ns_err_num;             /* Error Number */
        !            15:        u_short         ns_err_param;           /* Error Parameter */
        !            16:        struct idp      ns_err_idp;             /* Initial segment of offending
        !            17:                                                   packet */
        !            18:        u_char          ns_err_lev2[12];        /* at least this much higher
        !            19:                                                   level protocol */
        !            20: };
        !            21: struct  ns_epidp {
        !            22:        struct idp ns_ep_idp;
        !            23:        struct ns_errp ns_ep_errp;
        !            24: };
        !            25: 
        !            26: #define        NS_ERR_UNSPEC   0       /* Unspecified Error detected at dest. */
        !            27: #define        NS_ERR_BADSUM   1       /* Bad Checksum detected at dest */
        !            28: #define        NS_ERR_NOSOCK   2       /* Specified socket does not exist at dest*/
        !            29: #define        NS_ERR_FULLUP   3       /* Dest. refuses packet due to resource lim.*/
        !            30: #define        NS_ERR_UNSPEC_T 0x200   /* Unspec. Error occured before reaching dest*/
        !            31: #define        NS_ERR_BADSUM_T 0x201   /* Bad Checksum detected in transit */
        !            32: #define        NS_ERR_UNREACH_HOST     0x202   /* Dest cannot be reached from here*/
        !            33: #define        NS_ERR_TOO_OLD  0x203   /* Packet x'd 15 routers without delivery*/
        !            34: #define        NS_ERR_TOO_BIG  0x204   /* Packet too large to be forwarded through
        !            35:                                   some intermediate gateway.  The error
        !            36:                                   parameter field contains the max packet
        !            37:                                   size that can be accommodated */
        !            38: #define NS_ERR_ATHOST  4
        !            39: #define NS_ERR_ENROUTE 5
        !            40: #define NS_ERR_MAX (NS_ERR_ATHOST + NS_ERR_ENROUTE + 1)
        !            41: #define ns_err_x(c) (((c)&0x200) ? ((c) - 0x200 + NS_ERR_ATHOST) : c )
        !            42: 
        !            43: /*
        !            44:  * Variables related to this implementation
        !            45:  * of the network systems error message protocol.
        !            46:  */
        !            47: struct ns_errstat {
        !            48: /* statistics related to ns_err packets generated */
        !            49:        int     ns_es_error;            /* # of calls to ns_error */
        !            50:        int     ns_es_oldshort;         /* no error 'cuz old ip too short */
        !            51:        int     ns_es_oldns_err;        /* no error 'cuz old was ns_err */
        !            52:        int     ns_es_outhist[NS_ERR_MAX];
        !            53: /* statistics related to input messages processed */
        !            54:        int     ns_es_badcode;          /* ns_err_code out of range */
        !            55:        int     ns_es_tooshort;         /* packet < IDP_MINLEN */
        !            56:        int     ns_es_checksum;         /* bad checksum */
        !            57:        int     ns_es_badlen;           /* calculated bound mismatch */
        !            58:        int     ns_es_reflect;          /* number of responses */
        !            59:        int     ns_es_inhist[NS_ERR_MAX];
        !            60: };
        !            61: 
        !            62: #ifdef KERNEL
        !            63: struct ns_errstat ns_errstat;
        !            64: #endif

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