/* * Interface MIB architecture support * * $Id: systemstats_linux.c,v 1.3 2004/09/02 02:33:44 rstory Exp $ */ #include #include #include #include #include void netsnmp_access_systemstats_arch_init(void) { /* * nothing to do */ } /* /proc/net/snmp Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails FragOKs FragFails FragCreates Ip: 2 64 7083534 0 0 0 0 0 6860233 6548963 0 0 1 286623 63322 1 259920 0 0 Icmp: InMsgs InErrors InDestUnreachs InTimeExcds InParmProbs InSrcQuenchs InRedirects InEchos InEchoReps InTimestamps InTimestampReps InAddrMasks InAddrMaskReps OutMsgs OutErrors OutDestUnreachs OutTimeExcds OutParmProbs OutSrcQuenchs OutRedirects OutEchos OutEchoReps OutTimestamps OutTimestampReps OutAddrMasks OutAddrMaskReps Icmp: 335 36 254 72 0 0 0 0 9 0 0 0 0 257 0 257 0 0 0 0 0 0 0 0 0 0 Tcp: RtoAlgorithm RtoMin RtoMax MaxConn ActiveOpens PassiveOpens AttemptFails EstabResets CurrEstab InSegs OutSegs RetransSegs InErrs OutRsts Tcp: 1 200 120000 -1 5985 55 27 434 10 5365077 5098096 10902 2 4413 Udp: InDatagrams NoPorts InErrors OutDatagrams Udp: 1491094 122 0 1466178 */ /* * * @retval 0 success * @retval -1 no container specified * @retval -2 could not open /proc/net/dev * @retval -3 could not create entry (probably malloc) * @retval -4 file format error */ int netsnmp_access_systemstats_container_arch_load(netsnmp_container* container, u_int load_flags) { FILE *devin; char line[1024]; netsnmp_systemstats_entry *entry = NULL; int scan_count; char *stats, *start = line; int len; uintmax_t scan_vals[26]; DEBUGMSGTL(("access:systemstats:container:arch", "load (flags %p)\n", load_flags)); if (NULL == container) { snmp_log(LOG_ERR, "no container specified/found for access_systemstats_\n"); return -1; } if (!(devin = fopen("/proc/net/snmp", "r"))) { DEBUGMSGTL(("access:systemstats", "Failed to load Systemstats Table (linux1)\n")); snmp_log(LOG_ERR, "cannot open /proc/net/snmp ...\n"); return -2; } /* * skip header, but make sure it's the length we expect... */ fgets(line, sizeof(line), devin); len = strlen(line); if (224 != len) { snmp_log(LOG_ERR, "unexpected header length in /proc/net/snmp." " %d != 224\n", len); return -4; } /* * This file provides the statistics for each systemstats. * Read in each line in turn, isolate the systemstats name * and retrieve (or create) the corresponding data structure. */ start = fgets(line, sizeof(line), devin); fclose(devin); if (start) { len = strlen(line); if (line[len - 1] == '\n') line[len - 1] = '\0'; while (*start && *start == ' ') start++; if ((!*start) || ((stats = strrchr(start, ':')) == NULL)) { snmp_log(LOG_ERR, "systemstats data format error 1, line ==|%s|\n", line); return -4; } DEBUGMSGTL(("access:systemstats", "processing '%s'\n", start)); *stats++ = 0; /* null terminate name */ while (*stats == ' ') /* skip spaces before stats */ stats++; entry = netsnmp_access_systemstats_entry_create(4); if(NULL == entry) { netsnmp_access_systemstats_container_free(container, NETSNMP_ACCESS_SYSTEMSTATS_FREE_NOFLAGS); return -3; } /* * OK - we've now got (or created) the data structure for * this systemstats, including any "static" information. * Now parse the rest of the line (i.e. starting from 'stats') * to extract the relevant statistics, and populate * data structure accordingly. */ memset(scan_vals, 0x0, sizeof(scan_vals)); scan_count = sscanf(stats, "%llu %llu %llu %llu %llu %llu %llu %llu %llu %llu" "%llu %llu %llu %llu %llu %llu %llu %llu %llu", &scan_vals[0],&scan_vals[1],&scan_vals[2], &scan_vals[3],&scan_vals[4],&scan_vals[5], &scan_vals[6],&scan_vals[7],&scan_vals[8], &scan_vals[9],&scan_vals[10],&scan_vals[11], &scan_vals[12],&scan_vals[13],&scan_vals[14], &scan_vals[15],&scan_vals[16],&scan_vals[17], &scan_vals[18]); DEBUGMSGTL(("access:systemstats", " read %d values\n", scan_count)); if(scan_count != 19) { snmp_log(LOG_ERR, "error scanning systemstats data (expected %d, got %d)\n", 19, scan_count); netsnmp_access_systemstats_entry_free(entry); return -4; } /* entry->stats. = scan_vals[0]; /* Forwarding */ /* entry->stats. = scan_vals[1]; /* DefaultTTL */ entry->stats.HCInReceives.low = scan_vals[2] & 0xffffffff; entry->stats.HCInReceives.high = scan_vals[2] >> 32; entry->stats.InHdrErrors = scan_vals[3]; entry->stats.InAddrErrors = scan_vals[4]; entry->stats.HCInForwDatagrams.low = scan_vals[5] & 0xffffffff; entry->stats.HCInForwDatagrams.high = scan_vals[5] >> 32; entry->stats.InUnknownProtos = scan_vals[6]; entry->stats.InDiscards = scan_vals[7]; entry->stats.HCInDelivers.low = scan_vals[8] & 0xffffffff; entry->stats.HCInDelivers.high = scan_vals[8] >> 32; entry->stats.HCOutRequests.low = scan_vals[9] & 0xffffffff; entry->stats.HCOutRequests.high = scan_vals[9] >> 32; entry->stats.OutDiscards = scan_vals[10]; entry->stats.OutNoRoutes = scan_vals[11]; /* entry->stats. = scan_vals[12]; /* ReasmTimeout */ entry->stats.ReasmReqds = scan_vals[13]; entry->stats.ReasmOKs = scan_vals[14]; entry->stats.ReasmFails = scan_vals[15]; entry->stats.OutFragOKs = scan_vals[16]; entry->stats.OutFragFails = scan_vals[17]; entry->stats.OutFragCreates = scan_vals[18]; #if 0 entry->stats.ibytes.low = rec_oct & 0xffffffff; entry->stats.ibytes.high = rec_oct >> 32; #endif /* * calculated stats. */ /* * add to container */ CONTAINER_INSERT(container, entry); } return 0; }