Stefan Sperling has submitted this change and it was merged. ( 
https://gerrit.osmocom.org/11519 )

Change subject: add aggregated rtp connection stats to osmo-mgw
......................................................................

add aggregated rtp connection stats to osmo-mgw

Add a counter group for aggregated RTP connection statistics.
This group contains RTP counters which aggregate values of the
ephemeral RTP counters maintained per connection (mgcp_conn).

This provides a global overview of RTP processing for each
trunk throughout the lifetime of the osmo-mgw process.

The counters are displayed by 'show mgcp stats' and 'show rate-counters'.

While here, fix a typo in an item of the mgcp_conn_rate_ctr_desc array:
"rtp:octets_rx" was displayed for outbound packes; now says "_tx".

Change-Id: I80d36181600901ae2e0f321dc02b5d54ddc94139
Related: OS#2660
---
M include/osmocom/mgcp/mgcp.h
M include/osmocom/mgcp/mgcp_conn.h
M src/libosmo-mgcp/mgcp_conn.c
M src/libosmo-mgcp/mgcp_protocol.c
M src/libosmo-mgcp/mgcp_vty.c
5 files changed, 80 insertions(+), 14 deletions(-)

Approvals:
  Pau Espin Pedrol: Looks good to me, approved
  Jenkins Builder: Verified



diff --git a/include/osmocom/mgcp/mgcp.h b/include/osmocom/mgcp/mgcp.h
index c8c2cfd..aa5607f 100644
--- a/include/osmocom/mgcp/mgcp.h
+++ b/include/osmocom/mgcp/mgcp.h
@@ -194,9 +194,12 @@
        int vty_number_endpoints;
        struct mgcp_endpoint *endpoints;

-       /* rate counters */
+       /* Rate counter group which contains stats for processed CRCX commands. 
*/
        struct rate_ctr_group *mgcp_crcx_ctr_group;
+       /* Rate counter group which contains stats for processed MDCX commands. 
*/
        struct rate_ctr_group *mgcp_mdcx_ctr_group;
+       /* Rate counter group which aggregates stats of individual RTP 
connections. */
+       struct rate_ctr_group *all_rtp_conn_stats;
 };

 enum mgcp_role {
diff --git a/include/osmocom/mgcp/mgcp_conn.h b/include/osmocom/mgcp/mgcp_conn.h
index 3da7334..b0978a6 100644
--- a/include/osmocom/mgcp/mgcp_conn.h
+++ b/include/osmocom/mgcp/mgcp_conn.h
@@ -25,6 +25,7 @@

 #include <osmocom/mgcp/mgcp_internal.h>
 #include <osmocom/core/linuxlist.h>
+#include <osmocom/core/rate_ctr.h>
 #include <inttypes.h>

 /* RTP connection related counters */
@@ -35,7 +36,36 @@
         RTP_OCTETS_RX_CTR,
         RTP_PACKETS_TX_CTR,
         RTP_OCTETS_TX_CTR,
-        RTP_DROPPED_PACKETS_CTR
+        RTP_DROPPED_PACKETS_CTR,
+        RTP_NUM_CONNECTIONS,
+};
+
+/* RTP per-connection statistics. Instances of the corresponding rate counter 
group
+ * exist for the lifetime of an RTP connection.
+ * Must be kept in sync with all_rtp_conn_rate_ctr_desc below */
+static const struct rate_ctr_desc mgcp_conn_rate_ctr_desc[] = {
+       [IN_STREAM_ERR_TSTMP_CTR] = {"stream_err_tstmp:in", "Inbound rtp-stream 
timestamp errors."},
+       [OUT_STREAM_ERR_TSTMP_CTR] = {"stream_err_tstmp:out", "Outbound 
rtp-stream timestamp errors."},
+       [RTP_PACKETS_RX_CTR] = {"rtp:packets_rx", "Inbound rtp packets."},
+       [RTP_OCTETS_RX_CTR] = {"rtp:octets_rx", "Inbound rtp octets."},
+       [RTP_PACKETS_TX_CTR] = {"rtp:packets_tx", "Outbound rtp packets."},
+       [RTP_OCTETS_TX_CTR] = {"rtp:octets_tx", "Outbound rtp octets."},
+       [RTP_DROPPED_PACKETS_CTR] = {"rtp:dropped", "dropped rtp packets."}
+};
+
+/* Aggregated RTP connection stats. These are updated when an RTP connection 
is freed.
+ * Must be kept in sync with mgcp_conn_rate_ctr_desc above */
+static const struct rate_ctr_desc all_rtp_conn_rate_ctr_desc[] = {
+       [IN_STREAM_ERR_TSTMP_CTR] = {"all_rtp:err_tstmp_in", "Total inbound 
rtp-stream timestamp errors."},
+       [OUT_STREAM_ERR_TSTMP_CTR] = {"all_rtp:err_tstmp_out", "Total outbound 
rtp-stream timestamp errors."},
+       [RTP_PACKETS_RX_CTR] = {"all_rtp:packets_rx", "Total inbound rtp 
packets."},
+       [RTP_OCTETS_RX_CTR] = {"all_rtp:octets_rx", "Total inbound rtp 
octets."},
+       [RTP_PACKETS_TX_CTR] = {"all_rtp:packets_tx", "Total outbound rtp 
packets."},
+       [RTP_OCTETS_TX_CTR] = {"all_rtp:octets_tx", "Total outbound rtp 
octets."},
+       [RTP_DROPPED_PACKETS_CTR] = {"all_rtp:dropped", "Total dropped rtp 
packets."},
+
+       /* This last counter does not exist in per-connection stats, only here. 
*/
+       [RTP_NUM_CONNECTIONS] = {"all_rtp:num_closed_conns", "Total number of 
rtp connections closed."}
 };

 struct mgcp_conn *mgcp_conn_alloc(void *ctx, struct mgcp_endpoint *endp,
diff --git a/src/libosmo-mgcp/mgcp_conn.c b/src/libosmo-mgcp/mgcp_conn.c
index 820c63a..fce8a78 100644
--- a/src/libosmo-mgcp/mgcp_conn.c
+++ b/src/libosmo-mgcp/mgcp_conn.c
@@ -31,22 +31,12 @@
 #include <osmocom/core/rate_ctr.h>
 #include <ctype.h>

-static const struct rate_ctr_desc rate_ctr_desc[] = {
-       [IN_STREAM_ERR_TSTMP_CTR] = {"stream_err_tstmp:in", "Inbound rtp-stream 
timestamp errors."},
-       [OUT_STREAM_ERR_TSTMP_CTR] = {"stream_err_tstmp:out", "Outbound 
rtp-stream timestamp errors."},
-       [RTP_PACKETS_RX_CTR] = {"rtp:packets_rx", "Inbound rtp packets."},
-       [RTP_OCTETS_RX_CTR] = {"rtp:octets_rx", "Inbound rtp octets."},
-       [RTP_PACKETS_TX_CTR] = {"rtp:packets_tx", "Outbound rtp packets."},
-       [RTP_OCTETS_TX_CTR] = {"rtp:octets_rx", "Outbound rtp octets."},
-       [RTP_DROPPED_PACKETS_CTR] = {"rtp:dropped", "dropped rtp packets."}
-};
-
 const static struct rate_ctr_group_desc rate_ctr_group_desc = {
        .group_name_prefix = "conn_rtp",
        .group_description = "rtp connection statistics",
        .class_id = 1,
-       .num_ctr = ARRAY_SIZE(rate_ctr_desc),
-       .ctr_desc = rate_ctr_desc
+       .num_ctr = ARRAY_SIZE(mgcp_conn_rate_ctr_desc),
+       .ctr_desc = mgcp_conn_rate_ctr_desc
 };


@@ -234,6 +224,27 @@
        return NULL;
 }

+static void
+aggregate_rtp_conn_stats(struct mgcp_trunk_config *trunk, struct mgcp_conn_rtp 
*conn_rtp)
+{
+       struct rate_ctr_group *all_stats = trunk->all_rtp_conn_stats;
+       struct rate_ctr_group *conn_stats = conn_rtp->rate_ctr_group;
+       int i;
+
+       if (all_stats == NULL || conn_stats == NULL)
+               return;
+
+       /* Compared to per-connection RTP statistics, aggregated RTP statistics
+        * contain one additional rate couter item (RTP_NUM_CONNECTIONS).
+        * All other counters in both counter groups correspond to each other. 
*/
+       OSMO_ASSERT(conn_stats->desc->num_ctr + 1 == all_stats->desc->num_ctr);
+
+       for (i = 0; i < conn_stats->desc->num_ctr; i++)
+               rate_ctr_add(&all_stats->ctr[i], conn_stats->ctr[i].current);
+
+       rate_ctr_inc(&all_stats->ctr[RTP_NUM_CONNECTIONS]);
+}
+
 /*! free a connection by its ID.
  *  \param[in] endp associated endpoint
  *  \param[in] id identification number of the connection */
@@ -253,6 +264,7 @@

        switch (conn->type) {
        case MGCP_CONN_TYPE_RTP:
+               aggregate_rtp_conn_stats(endp->tcfg, &conn->u.rtp);
                mgcp_rtp_conn_cleanup(&conn->u.rtp);
                break;
        default:
diff --git a/src/libosmo-mgcp/mgcp_protocol.c b/src/libosmo-mgcp/mgcp_protocol.c
index 3a0e4ea..90c282c 100644
--- a/src/libosmo-mgcp/mgcp_protocol.c
+++ b/src/libosmo-mgcp/mgcp_protocol.c
@@ -42,6 +42,7 @@
 #include <osmocom/mgcp/mgcp_endp.h>
 #include <osmocom/mgcp/mgcp_sdp.h>
 #include <osmocom/mgcp/mgcp_codec.h>
+#include <osmocom/mgcp/mgcp_conn.h>

 struct mgcp_request {
        char *name;
@@ -103,6 +104,14 @@
        .ctr_desc = mgcp_mdcx_ctr_desc
 };

+const static struct rate_ctr_group_desc all_rtp_conn_rate_ctr_group_desc = {
+       .group_name_prefix = "all_rtp_conn",
+       .group_description = "aggregated statistics for all rtp connections",
+       .class_id = 1,
+       .num_ctr = ARRAY_SIZE(all_rtp_conn_rate_ctr_desc),
+       .ctr_desc = all_rtp_conn_rate_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);
@@ -1494,6 +1503,7 @@
         * a better way of assigning indices? */
        static unsigned int crcx_rate_ctr_index = 0;
        static unsigned int mdcx_rate_ctr_index = 0;
+       static unsigned int all_rtp_conn_rate_ctr_index = 0;

        if (trunk->mgcp_crcx_ctr_group == NULL) {
                trunk->mgcp_crcx_ctr_group = rate_ctr_group_alloc(ctx, 
&mgcp_crcx_ctr_group_desc, crcx_rate_ctr_index);
@@ -1507,6 +1517,13 @@
                talloc_set_destructor(trunk->mgcp_mdcx_ctr_group, 
free_rate_counter_group);
                mdcx_rate_ctr_index++;
        }
+       if (trunk->all_rtp_conn_stats == NULL) {
+               trunk->all_rtp_conn_stats = rate_ctr_group_alloc(ctx, 
&all_rtp_conn_rate_ctr_group_desc,
+                                                                
all_rtp_conn_rate_ctr_index);
+               OSMO_ASSERT(trunk->all_rtp_conn_stats);
+               talloc_set_destructor(trunk->all_rtp_conn_stats, 
free_rate_counter_group);
+               all_rtp_conn_rate_ctr_index++;
+       }
 }

 /*! allocate configuration with default values.
diff --git a/src/libosmo-mgcp/mgcp_vty.c b/src/libosmo-mgcp/mgcp_vty.c
index ed8aca5..e40d412 100644
--- a/src/libosmo-mgcp/mgcp_vty.c
+++ b/src/libosmo-mgcp/mgcp_vty.c
@@ -253,6 +253,10 @@
                vty_out(vty, "   %s:%s", 
cfg->mgcp_mdcx_ctr_group->desc->group_description, VTY_NEWLINE);
                vty_out_rate_ctr_group_fmt(vty, "   %25n: %10c (%S/s %M/m %H/h 
%D/d) %d", cfg->mgcp_mdcx_ctr_group);
        }
+       if (show_stats && cfg->all_rtp_conn_stats) {
+               vty_out(vty, "   %s:%s", 
cfg->all_rtp_conn_stats->desc->group_description, VTY_NEWLINE);
+               vty_out_rate_ctr_group_fmt(vty, "   %25n: %10c (%S/s %M/m %H/h 
%D/d) %d", cfg->all_rtp_conn_stats);
+       }
 }

 #define SHOW_MGCP_STR "Display information about the MGCP Media Gateway\n"

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Gerrit-Project: osmo-mgw
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I80d36181600901ae2e0f321dc02b5d54ddc94139
Gerrit-Change-Number: 11519
Gerrit-PatchSet: 3
Gerrit-Owner: Stefan Sperling <[email protected]>
Gerrit-Reviewer: Jenkins Builder (1000002)
Gerrit-Reviewer: Pau Espin Pedrol <[email protected]>
Gerrit-Reviewer: Stefan Sperling <[email protected]>

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