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Updates to snmp

This commit is contained in:
Michael Spang 2009-05-09 01:34:53 -04:00
parent 27e121ce3d
commit ae3b0ec67c
9 changed files with 261 additions and 36 deletions
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3
.gitignore vendored
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@ -1,2 +1,3 @@
/mib-tc-stats
/csc-snmp-subagent
/mirror-stats
*.o

10
Makefile
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@ -1,7 +1,11 @@
LDFLAGS := -lnl
LDFLAGS := -lnl $(shell net-snmp-config --base-agent-libs)
CFLAGS := -g3 -O2 -Wall
all: mib-tc-stats
all: mirror-stats csc-snmp-subagent
mirror-stats: mirror-stats.o mirror-nl-glue.o
csc-snmp-subagent: csc-snmp-subagent.o mirror-mib.o mirror-nl-glue.o
clean:
rm -f mib-tc-stats
rm -f *.o mirror-stats csc-snmp-subagent

221
csc-snmp-subagent.c Normal file
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@ -0,0 +1,221 @@
/* generated from net-snmp-config */
#include <net-snmp/net-snmp-config.h>
#ifdef HAVE_SIGNAL
#include <signal.h>
#endif /* HAVE_SIGNAL */
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "mirror-mib.h"
const char *app_name = "cscMIB";
extern int netsnmp_running;
#ifdef __GNUC__
#define UNUSED __attribute__((unused))
#else
#define UNUSED
#endif
RETSIGTYPE
stop_server(UNUSED int a) {
netsnmp_running = 0;
}
static void
usage(const char *prog)
{
fprintf(stderr,
"USAGE: %s [OPTIONS]\n"
"\n"
"OPTIONS:\n", prog);
fprintf(stderr,
" -d\t\t\tdump all traffic\n"
" -D TOKEN[,...]\tturn on debugging output for the specified "
"TOKENs\n"
"\t\t\t (ALL gives extremely verbose debugging output)\n"
" -f\t\t\tDo not fork() from the calling shell.\n"
" -h\t\t\tdisplay this help message\n"
" -H\t\t\tdisplay a list of configuration file directives\n"
" -L LOGOPTS\t\tToggle various defaults controlling logging:\n");
snmp_log_options_usage("\t\t\t ", stderr);
#ifndef DISABLE_MIB_LOADING
fprintf(stderr,
" -m MIB[:...]\t\tload given list of MIBs (ALL loads "
"everything)\n"
" -M DIR[:...]\t\tlook in given list of directories for MIBs\n");
#endif /* DISABLE_MIB_LOADING */
#ifndef DISABLE_MIB_LOADING
fprintf(stderr,
" -P MIBOPTS\t\tToggle various defaults controlling mib "
"parsing:\n");
snmp_mib_toggle_options_usage("\t\t\t ", stderr);
#endif /* DISABLE_MIB_LOADING */
fprintf(stderr,
" -v\t\t\tdisplay package version number\n"
" -x TRANSPORT\tconnect to master agent using TRANSPORT\n");
exit(1);
}
static void
version(void)
{
fprintf(stderr, "NET-SNMP version: %s\n", netsnmp_get_version());
exit(0);
}
int
main (int argc, char **argv)
{
int arg;
char* cp = NULL;
int dont_fork = 0, do_help = 0;
while ((arg = getopt(argc, argv, "dD:fhHL:"
#ifndef DISABLE_MIB_LOADING
"m:M:"
#endif /* DISABLE_MIB_LOADING */
"n:"
#ifndef DISABLE_MIB_LOADING
"P:"
#endif /* DISABLE_MIB_LOADING */
"vx:")) != EOF) {
switch (arg) {
case 'd':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DUMP_PACKET, 1);
break;
case 'D':
debug_register_tokens(optarg);
snmp_set_do_debugging(1);
break;
case 'f':
dont_fork = 1;
break;
case 'h':
usage(argv[0]);
break;
case 'H':
do_help = 1;
break;
case 'L':
if (snmp_log_options(optarg, argc, argv) < 0) {
exit(1);
}
break;
#ifndef DISABLE_MIB_LOADING
case 'm':
if (optarg != NULL) {
setenv("MIBS", optarg, 1);
} else {
usage(argv[0]);
}
break;
case 'M':
if (optarg != NULL) {
setenv("MIBDIRS", optarg, 1);
} else {
usage(argv[0]);
}
break;
#endif /* DISABLE_MIB_LOADING */
case 'n':
if (optarg != NULL) {
app_name = optarg;
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPTYPE, app_name);
} else {
usage(argv[0]);
}
break;
#ifndef DISABLE_MIB_LOADING
case 'P':
cp = snmp_mib_toggle_options(optarg);
if (cp != NULL) {
fprintf(stderr, "Unknown parser option to -P: %c.\n", *cp);
usage(argv[0]);
}
break;
#endif /* DISABLE_MIB_LOADING */
case 'v':
version();
break;
case 'x':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET, optarg);
} else {
usage(argv[0]);
}
break;
default:
fprintf(stderr, "invalid option: -%c\n", arg);
usage(argv[0]);
break;
}
}
if (do_help) {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS, 1);
} else {
/* we are a subagent */
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, 1);
if (!dont_fork) {
if (netsnmp_daemonize(1, snmp_stderrlog_status()) != 0)
exit(1);
}
/* initialize tcpip, if necessary */
SOCK_STARTUP;
}
/* initialize the agent library */
init_agent(app_name);
/* initialize your mib code here */
init_mirror_mib();
/* cscMIB will be used to read cscMIB.conf files. */
init_snmp("cscMIB");
if (do_help) {
fprintf(stderr, "Configuration directives understood:\n");
read_config_print_usage(" ");
exit(0);
}
/* In case we received a request to stop (kill -TERM or kill -INT) */
netsnmp_running = 1;
#ifdef SIGTERM
signal(SIGTERM, stop_server);
#endif
#ifdef SIGINT
signal(SIGINT, stop_server);
#endif
/* main loop here... */
while(netsnmp_running) {
agent_check_and_process(1);
}
/* at shutdown time */
snmp_shutdown(app_name);
SOCK_CLEANUP;
exit(0);
}

16
cscMIB.h
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@ -1,16 +0,0 @@
/*
* Note: this file originally auto-generated by mib2c using
* : mib2c.scalar.conf 11805 2005-01-07 09:37:18Z dts12 $
*/
#ifndef CSCMIB_H
#define CSCMIB_H
/*
* function declarations
*/
void init_cscMIB(void);
Netsnmp_Node_Handler handle_cogentBytes;
Netsnmp_Node_Handler handle_orionBytes;
Netsnmp_Node_Handler handle_campusBytes;
#endif /* CSCMIB_H */

34
cscMIB.c → mirror-mib.c
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@ -6,12 +6,11 @@
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "cscMIB.h"
#include "mib-tc-stats.h"
#include "mirror-mib.h"
#include "mirror-nl-glue.h"
/** Initializes the cscMIB module */
void
init_cscMIB(void)
init_mirror_mib(void)
{
static oid cogentBytes_oid[] =
{ 1, 3, 6, 1, 4, 1, 27934, 2, 2, 1 };
@ -20,7 +19,9 @@ init_cscMIB(void)
static oid campusBytes_oid[] =
{ 1, 3, 6, 1, 4, 1, 27934, 2, 2, 3 };
DEBUGMSGTL(("cscMIB", "Initializing\n"));
DEBUGMSGTL(("mirror_mib", "Initializing\n"));
mirror_stats_initialize();
netsnmp_register_scalar(netsnmp_create_handler_registration
("cogentBytes", handle_cogentBytes,
@ -36,20 +37,25 @@ init_cscMIB(void)
HANDLER_CAN_RONLY));
}
void explode_counter64(uint64_t num, struct counter64 *counter) {
counter->low = num & 0xFFFFFFFF;
counter->high = (num >> 32) & 0xFFFFFFFF;
}
int
handle_cogentBytes(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
uint64_t bytes;
struct counter64 counter;
mirror_stats_refresh();
bytes = get_class_byte_count(&cogent_class);
explode_counter64(get_class_byte_count(&cogent_class), &counter);
switch (reqinfo->mode) {
case MODE_GET:
snmp_set_var_typed_value(requests->requestvb, ASN_COUNTER64,
(u_char *)&bytes, sizeof(bytes));
(u_char *)&counter, sizeof(counter));
break;
default:
die("unknown mode");
@ -64,14 +70,14 @@ handle_orionBytes(netsnmp_mib_handler *handler,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
uint64_t bytes;
struct counter64 counter;
mirror_stats_refresh();
bytes = get_class_byte_count(&orion_class);
explode_counter64(get_class_byte_count(&orion_class), &counter);
switch (reqinfo->mode) {
case MODE_GET:
snmp_set_var_typed_value(requests->requestvb, ASN_COUNTER64,
(u_char *)&bytes, sizeof(bytes));
(u_char *)&counter, sizeof(counter));
break;
default:
die("unknown mode");
@ -86,14 +92,14 @@ handle_campusBytes(netsnmp_mib_handler *handler,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
uint64_t bytes;
struct counter64 counter;
mirror_stats_refresh();
bytes = get_class_byte_count(&campus_class);
explode_counter64(get_class_byte_count(&campus_class), &counter);
switch (reqinfo->mode) {
case MODE_GET:
snmp_set_var_typed_value(requests->requestvb, ASN_COUNTER64,
(u_char *)&bytes, sizeof(bytes));
(u_char *)&counter, sizeof(counter));
break;
default:
die("unknown mode");

9
mirror-mib.h Normal file
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@ -0,0 +1,9 @@
#ifndef MIRRORMIB_H
#define MIRRORMIB_H
void init_mirror_mib(void);
Netsnmp_Node_Handler handle_cogentBytes;
Netsnmp_Node_Handler handle_orionBytes;
Netsnmp_Node_Handler handle_campusBytes;
#endif

2
mib-tc-stats.c → mirror-nl-glue.c
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@ -8,7 +8,7 @@
#include <netlink/route/link.h>
#include <netlink/cache-api.h>
#include <netlink/object.h>
#include "mib-tc-stats.h"
#include "mirror-nl-glue.h"
static struct nl_cache *link_cache, *class_cache;
static struct rtnl_link *eth;

0
mib-tc-stats.h → mirror-nl-glue.h
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2
mib-tc-test.c → mirror-stats.c
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@ -1,4 +1,4 @@
#include "mib-tc-stats.h"
#include "mirror-nl-glue.h"
int main(int argc, char *argv[]) {
mirror_stats_initialize();