1 /* ns_error.h 6.1 85/05/30 */ 2 3 /* 4 * Xerox NS error messages 5 */ 6 7 struct ns_errp { 8 u_short ns_err_num; /* Error Number */ 9 u_short ns_err_param; /* Error Parameter */ 10 struct idp ns_err_idp; /* Initial segment of offending 11 packet */ 12 u_char ns_err_lev2[12]; /* at least this much higher 13 level protocol */ 14 }; 15 struct ns_epidp { 16 struct idp ns_ep_idp; 17 struct ns_errp ns_ep_errp; 18 }; 19 20 #define NS_ERR_UNSPEC 0 /* Unspecified Error detected at dest. */ 21 #define NS_ERR_BADSUM 1 /* Bad Checksum detected at dest */ 22 #define NS_ERR_NOSOCK 2 /* Specified socket does not exist at dest*/ 23 #define NS_ERR_FULLUP 3 /* Dest. refuses packet due to resource lim.*/ 24 #define NS_ERR_UNSPEC_T 0x200 /* Unspec. Error occured before reaching dest*/ 25 #define NS_ERR_BADSUM_T 0x201 /* Bad Checksum detected in transit */ 26 #define NS_ERR_UNREACH_HOST 0x202 /* Dest cannot be reached from here*/ 27 #define NS_ERR_TOO_OLD 0x203 /* Packet x'd 15 routers without delivery*/ 28 #define NS_ERR_TOO_BIG 0x204 /* Packet too large to be forwarded through 29 some intermediate gateway. The error 30 parameter field contains the max packet 31 size that can be accommodated */ 32 #define NS_ERR_ATHOST 4 33 #define NS_ERR_ENROUTE 5 34 #define NS_ERR_MAX (NS_ERR_ATHOST + NS_ERR_ENROUTE + 1) 35 #define ns_err_x(c) (((c)&0x200) ? ((c) - 0x200 + NS_ERR_ATHOST) : c ) 36 37 /* 38 * Variables related to this implementation 39 * of the network systems error message protocol. 40 */ 41 struct ns_errstat { 42 /* statistics related to ns_err packets generated */ 43 int ns_es_error; /* # of calls to ns_error */ 44 int ns_es_oldshort; /* no error 'cuz old ip too short */ 45 int ns_es_oldns_err; /* no error 'cuz old was ns_err */ 46 int ns_es_outhist[NS_ERR_MAX]; 47 /* statistics related to input messages processed */ 48 int ns_es_badcode; /* ns_err_code out of range */ 49 int ns_es_tooshort; /* packet < IDP_MINLEN */ 50 int ns_es_checksum; /* bad checksum */ 51 int ns_es_badlen; /* calculated bound mismatch */ 52 int ns_es_reflect; /* number of responses */ 53 int ns_es_inhist[NS_ERR_MAX]; 54 }; 55 56 #ifdef KERNEL 57 struct ns_errstat ns_errstat; 58 #endif 59