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-rw-r--r--agent/mibgroup/ip-mib/data_access/systemstats_linux.c376
1 files changed, 376 insertions, 0 deletions
diff --git a/agent/mibgroup/ip-mib/data_access/systemstats_linux.c b/agent/mibgroup/ip-mib/data_access/systemstats_linux.c
new file mode 100644
index 0000000..947afe8
--- /dev/null
+++ b/agent/mibgroup/ip-mib/data_access/systemstats_linux.c
@@ -0,0 +1,376 @@
+/*
+ * Interface MIB architecture support
+ *
+ * $Id: systemstats_linux.c 15220 2006-09-15 00:48:50Z tanders $
+ */
+#include <net-snmp/net-snmp-config.h>
+#include <net-snmp/net-snmp-includes.h>
+
+#include <net-snmp/agent/net-snmp-agent-includes.h>
+#include <net-snmp/data_access/ipstats.h>
+#include <net-snmp/data_access/systemstats.h>
+
+static int _systemstats_v4(netsnmp_container* container, u_int load_flags);
+#if defined (NETSNMP_ENABLE_IPV6)
+static int _systemstats_v6(netsnmp_container* container, u_int load_flags);
+#endif
+
+
+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 file
+ * @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)
+{
+ int rc1;
+#if defined (NETSNMP_ENABLE_IPV6)
+ int rc2;
+#endif
+
+ if (NULL == container) {
+ snmp_log(LOG_ERR, "no container specified/found for access_systemstats_\n");
+ return -1;
+ }
+
+ /*
+ * load v4 and v6 stats. Even if one fails, try the other.
+ * If they have the same rc, return it. if the differ, return
+ * the smaller one. No log messages, since each individual function
+ * would have logged its own message.
+ */
+ rc1 = _systemstats_v4(container, load_flags);
+#if defined (NETSNMP_ENABLE_IPV6)
+ rc2 = _systemstats_v6(container, load_flags);
+ if ((rc1 == rc2) || (rc1 < rc2))
+ return rc1;
+
+ return rc2;
+#else
+ return rc1;
+#endif
+}
+
+static int
+_systemstats_v4(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[19];
+
+ DEBUGMSGTL(("access:systemstats:container:arch", "load v4 (flags %p)\n",
+ load_flags));
+
+ netsnmp_assert(container != NULL); /* load function shoulda checked this */
+
+ 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) {
+ fclose(devin);
+ 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(1);
+ 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];
+
+ /*
+ * add to container
+ */
+ CONTAINER_INSERT(container, entry);
+ }
+ return 0;
+}
+
+#if defined (NETSNMP_ENABLE_IPV6)
+static int
+_systemstats_v6(netsnmp_container* container, u_int load_flags)
+{
+ FILE *devin;
+ char line[1024];
+ netsnmp_systemstats_entry *entry = NULL;
+ int scan_count = 0;
+ char *stats, *start = line;
+ int len, rc;
+ uintmax_t scan_val;
+ const char *filename = "/proc/net/snmp6";
+ static int warned_open = 0;
+
+ DEBUGMSGTL(("access:systemstats:container:arch", "load v6 (flags %p)\n",
+ load_flags));
+
+ netsnmp_assert(container != NULL); /* load function shoulda checked this */
+
+ entry = netsnmp_access_systemstats_entry_create(2);
+ if(NULL == entry)
+ return -3;
+
+ /*
+ * try to open file. If we can't, that's ok - maybe the module hasn't
+ * been loaded yet.
+ */
+ if (!(devin = fopen(filename, "r"))) {
+ DEBUGMSGTL(("access:systemstats",
+ "Failed to load Systemstats Table (linux1)\n"));
+ if(!warned_open) {
+ ++warned_open;
+ snmp_log(LOG_ERR, "cannot open %s ...\n", filename);
+ }
+ free(entry);
+ return 0;
+ }
+
+ /*
+ * 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.
+ */
+ while (1) {
+ start = fgets(line, sizeof(line), devin);
+ if (NULL == start)
+ break;
+
+ len = strlen(line);
+ if (line[len - 1] == '\n')
+ line[len - 1] = '\0';
+
+ if (('I' != line[0]) || ('6' != line[2]))
+ continue;
+
+ stats = strrchr(line, ' ');
+ if (NULL == stats) {
+ snmp_log(LOG_ERR,
+ "systemstats data format error 1, line ==|%s|\n", line);
+ continue;
+ }
+
+ DEBUGMSGTL(("access:systemstats", "processing '%s'\n", line));
+
+ /*
+ * 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.
+ */
+ scan_val = atoll(stats);
+ if (0 == scan_val)
+ continue;
+
+ rc = 0;
+ if ('I' == line[3]) { /* In */
+ if ('A' == line[5]) {
+ entry->stats.InAddrErrors = scan_val;
+ } else if ('D' == line[5]) {
+ if ('e' == line[6]) {
+ entry->stats.HCInDelivers.low = scan_val & 0xffffffff;
+ entry->stats.HCInDelivers.high = scan_val >> 32;
+ } else if ('i' == line[6])
+ entry->stats.InDiscards = scan_val;
+ else
+ rc = 1;
+ } else if ('H' == line[5]) {
+ entry->stats.InHdrErrors = scan_val;
+ } else if ('M' == line[5]) {
+ entry->stats.HCInMcastPkts.low = scan_val & 0xffffffff;
+ entry->stats.HCInMcastPkts.high = scan_val >> 32;
+ } else if ('N' == line[5]) {
+ entry->stats.InNoRoutes = scan_val;
+ } else if ('R' == line[5]) {
+ entry->stats.HCInReceives.low = scan_val & 0xffffffff;
+ entry->stats.HCInReceives.high = scan_val >> 32;
+ } else if ('T' == line[5]) {
+ if ('r' == line[6]) {
+ entry->stats.InTruncatedPkts = scan_val & 0xffffffff;
+ } else if ('o' == line[6])
+ ; /* TooBig isn't in the MIB, so ignore it */
+ else
+ rc = 1;
+ } else if ('U' == line[5]) {
+ entry->stats.InUnknownProtos = scan_val;
+ } else
+ rc = 1;
+ } else if ('O' == line[3]) { /* Out */
+ if ('D' == line[6]) {
+ entry->stats.OutDiscards = scan_val;
+ } else if ('F' == line[6]) {
+ entry->stats.HCOutForwDatagrams.low = scan_val & 0xffffffff;
+ entry->stats.HCOutForwDatagrams.high = scan_val >> 32;
+ } else if ('M' == line[6]) {
+ entry->stats.HCOutMcastPkts.low = scan_val & 0xffffffff;
+ entry->stats.HCOutMcastPkts.high = scan_val >> 32;
+ } else if ('N' == line[6]) {
+ entry->stats.OutNoRoutes = scan_val;
+ } else if ('R' == line[6]) {
+ entry->stats.HCOutRequests.low = scan_val & 0xffffffff;
+ entry->stats.HCOutRequests.high = scan_val >> 32;
+ } else
+ rc = 1;
+ } else if ('R' == line[3]) { /* Reasm */
+ if ('F' == line[8]) {
+ entry->stats.ReasmFails = scan_val;
+ } else if ('O' == line[8]) {
+ entry->stats.ReasmOKs = scan_val;
+ } else if ('R' == line[8]) {
+ entry->stats.ReasmReqds = scan_val;
+ } else if ('T' == line[8]) {
+ ; /* no mib entry for reasm timeout */
+ } else
+ rc = 1;
+ } else if ('F' == line[3]) { /* Frag */
+ if ('C' == line[7])
+ entry->stats.OutFragCreates = scan_val;
+ else if ('O' == line[7])
+ entry->stats.OutFragOKs = scan_val;
+ else if ('F' == line[7])
+ entry->stats.OutFragFails = scan_val;
+ else
+ rc = 1;
+ } else
+ rc = 1;
+
+ if (rc)
+ DEBUGMSGTL(("access:systemstats", "unknown stat %s\n", line));
+ else
+ ++scan_count;
+ }
+
+ fclose(devin);
+
+ /*
+ * add to container
+ */
+ CONTAINER_INSERT(container, entry);
+
+ return rc;
+}
+#endif /* NETSNMP_ENABLE_IPV6 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-03 08:38:11 +0000