add MGCP CRCX command statistics to osmo-mgw
Add a counter group for CRCX commands. The group contains counters for
successful connection processing as well as various error conditions.
This provides a quick overview of CRCX failures on each trunk throughout
the lifetime of the osmo-mgw process.
For example, after running the TTCN3 mgw test suite, the counters show
the following values:
OsmoMGW> show rate-counters
crxc statistics:
crcx:success: 88 (0/s 88/m 0/h 0/d) CRCX command processed successfully.
crcx:bad_action: 0 (0/s 0/m 0/h 0/d) bad action in CRCX command.
crcx:unhandled_param: 1 (0/s 1/m 0/h 0/d) unhandled parameter in CRCX command.
crcx:missing_callid: 1 (0/s 1/m 0/h 0/d) missing CallId in CRCX command.
crcx:invalid_mode: 1 (0/s 1/m 0/h 0/d) connection invalid mode in CRCX command.
crcx:limit_exceeded: 0 (0/s 0/m 0/h 0/d) limit of concurrent connections was reached.
crcx:unkown_callid: 0 (0/s 0/m 0/h 0/d) unknown CallId in CRCX command.
crcx:alloc_conn_fail: 0 (0/s 0/m 0/h 0/d) connection allocation failure.
crcx:no_remote_conn_desc: 1 (0/s 1/m 0/h 0/d) no opposite end specified for connection.
crcx:start_rtp_failure: 0 (0/s 0/m 0/h 0/d) failure to start RTP processing.
crcx:conn_rejected: 0 (0/s 0/m 0/h 0/d) connection rejected by policy.
OsmoMGW>
These same counters are now also shown by 'show mgcp stats'
in the context of the trunk which they belong to.
With input from Philipp Maier.
Change-Id: Ida82fc340d5c66180e5fe9a0d195e9be6dc64c61
Related: OS#2660
diff --git a/src/libosmo-mgcp/mgcp_protocol.c b/src/libosmo-mgcp/mgcp_protocol.c
index e17bdae..bc35e5c 100644
--- a/src/libosmo-mgcp/mgcp_protocol.c
+++ b/src/libosmo-mgcp/mgcp_protocol.c
@@ -32,6 +32,7 @@
#include <osmocom/core/msgb.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/select.h>
+#include <osmocom/core/stats.h>
#include <osmocom/mgcp/mgcp.h>
#include <osmocom/mgcp/mgcp_common.h>
@@ -51,6 +52,28 @@
#define MGCP_REQUEST(NAME, REQ, DEBUG_NAME) \
{ .name = NAME, .handle_request = REQ, .debug_name = DEBUG_NAME },
+static const struct rate_ctr_desc mgcp_crcx_ctr_desc[] = {
+ [MGCP_CRCX_SUCCESS] = {"crcx:success", "CRCX command processed successfully."},
+ [MGCP_CRCX_FAIL_BAD_ACTION] = {"crcx:bad_action", "bad action in CRCX command."},
+ [MGCP_CRCX_FAIL_UNHANDLED_PARAM] = {"crcx:unhandled_param", "unhandled parameter in CRCX command."},
+ [MGCP_CRCX_FAIL_MISSING_CALLID] = {"crcx:missing_callid", "missing CallId in CRCX command."},
+ [MGCP_CRCX_FAIL_INVALID_MODE] = {"crcx:invalid_mode", "connection invalid mode in CRCX command."},
+ [MGCP_CRCX_FAIL_LIMIT_EXCEEDED] = {"crcx:limit_exceeded", "limit of concurrent connections was reached."},
+ [MGCP_CRCX_FAIL_UNKNOWN_CALLID] = {"crcx:unkown_callid", "unknown CallId in CRCX command."},
+ [MGCP_CRCX_FAIL_ALLOC_CONN] = {"crcx:alloc_conn_fail", "connection allocation failure."},
+ [MGCP_CRCX_FAIL_NO_REMOTE_CONN_DESC] = {"crcx:no_remote_conn_desc", "no opposite end specified for connection."},
+ [MGCP_CRCX_FAIL_START_RTP] = {"crcx:start_rtp_failure", "failure to start RTP processing."},
+ [MGCP_CRCX_FAIL_REJECTED_BY_POLICY] = {"crcx:conn_rejected", "connection rejected by policy."},
+};
+
+const static struct rate_ctr_group_desc mgcp_crcx_ctr_group_desc = {
+ .group_name_prefix = "crcx",
+ .group_description = "crxc statistics",
+ .class_id = OSMO_STATS_CLASS_GLOBAL,
+ .num_ctr = ARRAY_SIZE(mgcp_crcx_ctr_desc),
+ .ctr_desc = mgcp_crcx_ctr_desc
+};
+
static struct msgb *handle_audit_endpoint(struct mgcp_parse_data *data);
static struct msgb *handle_create_con(struct mgcp_parse_data *data);
static struct msgb *handle_delete_con(struct mgcp_parse_data *data);
@@ -701,7 +724,7 @@
/* CRCX command handler, processes the received command */
static struct msgb *handle_create_con(struct mgcp_parse_data *p)
{
- struct mgcp_trunk_config *tcfg;
+ struct mgcp_trunk_config *tcfg = p->endp->tcfg;
struct mgcp_endpoint *endp = p->endp;
int error_code = 400;
@@ -733,6 +756,7 @@
/* It is illegal to send a connection identifier
* together with a CRCX, the MGW will assign the
* connection identifier by itself on CRCX */
+ rate_ctr_inc(&tcfg->mgcp_crcx_ctr_group->ctr[MGCP_CRCX_FAIL_BAD_ACTION]);
return create_err_response(NULL, 523, "CRCX", p->trans);
break;
case 'M':
@@ -759,19 +783,19 @@
LOGP(DLMGCP, LOGL_NOTICE,
"CRCX: endpoint:%x unhandled option: '%c'/%d\n",
ENDPOINT_NUMBER(endp), *line, *line);
+ rate_ctr_inc(&tcfg->mgcp_crcx_ctr_group->ctr[MGCP_CRCX_FAIL_UNHANDLED_PARAM]);
return create_err_response(NULL, 539, "CRCX", p->trans);
break;
}
}
mgcp_header_done:
- tcfg = p->endp->tcfg;
-
/* Check parameters */
if (!callid) {
LOGP(DLMGCP, LOGL_ERROR,
"CRCX: endpoint:%x insufficient parameters, missing callid\n",
ENDPOINT_NUMBER(endp));
+ rate_ctr_inc(&tcfg->mgcp_crcx_ctr_group->ctr[MGCP_CRCX_FAIL_MISSING_CALLID]);
return create_err_response(endp, 516, "CRCX", p->trans);
}
@@ -779,6 +803,7 @@
LOGP(DLMGCP, LOGL_ERROR,
"CRCX: endpoint:%x insufficient parameters, missing mode\n",
ENDPOINT_NUMBER(endp));
+ rate_ctr_inc(&tcfg->mgcp_crcx_ctr_group->ctr[MGCP_CRCX_FAIL_INVALID_MODE]);
return create_err_response(endp, 517, "CRCX", p->trans);
}
@@ -795,6 +820,7 @@
} else {
/* There is no more room for a connection, leave
* everything as it is and return with an error */
+ rate_ctr_inc(&tcfg->mgcp_crcx_ctr_group->ctr[MGCP_CRCX_FAIL_LIMIT_EXCEEDED]);
return create_err_response(endp, 540, "CRCX", p->trans);
}
}
@@ -812,6 +838,7 @@
else {
/* This is not our call, leave everything as it is and
* return with an error. */
+ rate_ctr_inc(&tcfg->mgcp_crcx_ctr_group->ctr[MGCP_CRCX_FAIL_UNKNOWN_CALLID]);
return create_err_response(endp, 400, "CRCX", p->trans);
}
}
@@ -827,6 +854,7 @@
LOGP(DLMGCP, LOGL_ERROR,
"CRCX: endpoint:0x%x unable to allocate RTP connection\n",
ENDPOINT_NUMBER(endp));
+ rate_ctr_inc(&tcfg->mgcp_crcx_ctr_group->ctr[MGCP_CRCX_FAIL_ALLOC_CONN]);
goto error2;
}
@@ -890,6 +918,7 @@
"CRCX: endpoint:%x selected connection mode type requires an opposite end!\n",
ENDPOINT_NUMBER(endp));
error_code = 527;
+ rate_ctr_inc(&tcfg->mgcp_crcx_ctr_group->ctr[MGCP_CRCX_FAIL_NO_REMOTE_CONN_DESC]);
goto error2;
}
@@ -901,6 +930,7 @@
LOGP(DLMGCP, LOGL_ERROR,
"CRCX: endpoint:0x%x could not start RTP processing!\n",
ENDPOINT_NUMBER(endp));
+ rate_ctr_inc(&tcfg->mgcp_crcx_ctr_group->ctr[MGCP_CRCX_FAIL_START_RTP]);
goto error2;
}
@@ -915,6 +945,7 @@
"CRCX: endpoint:0x%x CRCX rejected by policy\n",
ENDPOINT_NUMBER(endp));
mgcp_endp_release(endp);
+ rate_ctr_inc(&tcfg->mgcp_crcx_ctr_group->ctr[MGCP_CRCX_FAIL_REJECTED_BY_POLICY]);
return create_err_response(endp, 400, "CRCX", p->trans);
break;
case MGCP_POLICY_DEFER:
@@ -942,6 +973,7 @@
LOGP(DLMGCP, LOGL_NOTICE,
"CRCX: endpoint:0x%x connection successfully created\n",
ENDPOINT_NUMBER(endp));
+ rate_ctr_inc(&tcfg->mgcp_crcx_ctr_group->ctr[MGCP_CRCX_SUCCESS]);
return create_response_with_sdp(endp, conn, "CRCX", p->trans, true);
error2:
mgcp_endp_release(endp);
@@ -1396,6 +1428,28 @@
tcfg->keepalive_interval, 0);
}
+static int free_rate_counter_group(struct rate_ctr_group *rate_ctr_group)
+{
+ rate_ctr_group_free(rate_ctr_group);
+ return 0;
+}
+
+static void alloc_mgcp_crxc_rate_counters(struct mgcp_trunk_config *trunk, void *ctx)
+{
+ /* FIXME: Each new rate counter group requires a unique index. At the
+ * moment we generate an index using a counter, but perhaps there is
+ * a better way of assigning indices? */
+ static unsigned int rate_ctr_index = 0;
+
+ if (trunk->mgcp_crcx_ctr_group != NULL)
+ return;
+
+ trunk->mgcp_crcx_ctr_group = rate_ctr_group_alloc(ctx, &mgcp_crcx_ctr_group_desc, rate_ctr_index);
+ OSMO_ASSERT(trunk->mgcp_crcx_ctr_group);
+ talloc_set_destructor(trunk->mgcp_crcx_ctr_group, free_rate_counter_group);
+ rate_ctr_index++;
+}
+
/*! allocate configuration with default values.
* (called once at startup by main function) */
struct mgcp_config *mgcp_config_alloc(void)
@@ -1433,6 +1487,7 @@
cfg->trunk.audio_send_name = 1;
cfg->trunk.omit_rtcp = 0;
mgcp_trunk_set_keepalive(&cfg->trunk, MGCP_KEEPALIVE_ONCE);
+ alloc_mgcp_crxc_rate_counters(&cfg->trunk, cfg);
INIT_LLIST_HEAD(&cfg->trunks);
@@ -1464,7 +1519,9 @@
trunk->vty_number_endpoints = 33;
trunk->omit_rtcp = 0;
mgcp_trunk_set_keepalive(trunk, MGCP_KEEPALIVE_ONCE);
+ alloc_mgcp_crxc_rate_counters(trunk, trunk);
llist_add_tail(&trunk->entry, &cfg->trunks);
+
return trunk;
}
@@ -1509,6 +1566,8 @@
}
tcfg->number_endpoints = tcfg->vty_number_endpoints;
+ alloc_mgcp_crxc_rate_counters(tcfg, tcfg->cfg);
+
return 0;
}