[MERGED] osmo-mgw[master]: vty: do not change number_endpoints at runtime

This is merely a historical archive of years 2008-2021, before the migration to mailman3.

A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/gerrit-log@lists.osmocom.org/.

dexter gerrit-no-reply at lists.osmocom.org
Mon Nov 27 16:05:44 UTC 2017


dexter has submitted this change and it was merged.

Change subject: vty: do not change number_endpoints at runtime
......................................................................


vty: do not change number_endpoints at runtime

The variable number_endpoints is used as a length indicator
for the array that contains the trunk endpoints at all times.
When osmo-mgw is startet up, the variable is set and osmo-mgw
will allocate the memory for the endpoints. However, it is
still possible to manipulate the variable via the telnet
interface. When the value is increased osmo-mgw might start
using unallocated memory at some point.

Store subsequent changes of number_enspoints in a separate
variable in order to write them to the config file. The
changes will then take effect after a restart.

Closes: OS#2632
Change-Id: I3994af016fb96427263edbba05f560743f85fdd4
---
M include/osmocom/mgcp/mgcp.h
M src/libosmo-mgcp/mgcp_protocol.c
M src/libosmo-mgcp/mgcp_vty.c
M tests/mgcp/mgcp_test.c
4 files changed, 14 insertions(+), 13 deletions(-)

Approvals:
  Neels Hofmeyr: Looks good to me, approved
  Jenkins Builder: Verified



diff --git a/include/osmocom/mgcp/mgcp.h b/include/osmocom/mgcp/mgcp.h
index 42a91d8..c7634fb 100644
--- a/include/osmocom/mgcp/mgcp.h
+++ b/include/osmocom/mgcp/mgcp.h
@@ -151,6 +151,7 @@
 	int rtp_accept_all;
 
 	unsigned int number_endpoints;
+	int vty_number_endpoints;
 	struct mgcp_endpoint *endpoints;
 };
 
diff --git a/src/libosmo-mgcp/mgcp_protocol.c b/src/libosmo-mgcp/mgcp_protocol.c
index 9e04e50..f542745 100644
--- a/src/libosmo-mgcp/mgcp_protocol.c
+++ b/src/libosmo-mgcp/mgcp_protocol.c
@@ -1170,7 +1170,7 @@
 	trunk->audio_payload = 126;
 	trunk->audio_send_ptime = 1;
 	trunk->audio_send_name = 1;
-	trunk->number_endpoints = 33;
+	trunk->vty_number_endpoints = 33;
 	trunk->omit_rtcp = 0;
 	mgcp_trunk_set_keepalive(trunk, MGCP_KEEPALIVE_ONCE);
 	llist_add_tail(&trunk->entry, &cfg->trunks);
@@ -1202,12 +1202,12 @@
 
 	tcfg->endpoints = _talloc_zero_array(tcfg->cfg,
 					     sizeof(struct mgcp_endpoint),
-					     tcfg->number_endpoints,
+					     tcfg->vty_number_endpoints,
 					     "endpoints");
 	if (!tcfg->endpoints)
 		return -1;
 
-	for (i = 0; i < tcfg->number_endpoints; ++i) {
+	for (i = 0; i < tcfg->vty_number_endpoints; ++i) {
 		INIT_LLIST_HEAD(&tcfg->endpoints[i].conns);
 		tcfg->endpoints[i].cfg = tcfg->cfg;
 		tcfg->endpoints[i].tcfg = tcfg;
@@ -1217,6 +1217,7 @@
 		tcfg->endpoints[i].type = &ep_typeset.rtp;
 	}
 
+	tcfg->number_endpoints = tcfg->vty_number_endpoints;
 	return 0;
 }
 
diff --git a/src/libosmo-mgcp/mgcp_vty.c b/src/libosmo-mgcp/mgcp_vty.c
index 9420d96..80396e0 100644
--- a/src/libosmo-mgcp/mgcp_vty.c
+++ b/src/libosmo-mgcp/mgcp_vty.c
@@ -115,7 +115,7 @@
 		g_cfg->trunk.audio_send_name ? "" : "no ", VTY_NEWLINE);
 	vty_out(vty, "  loop %u%s", ! !g_cfg->trunk.audio_loop, VTY_NEWLINE);
 	vty_out(vty, "  number endpoints %u%s",
-		g_cfg->trunk.number_endpoints - 1, VTY_NEWLINE);
+		g_cfg->trunk.vty_number_endpoints - 1, VTY_NEWLINE);
 	vty_out(vty, "  %sallow-transcoding%s",
 		g_cfg->trunk.no_audio_transcoding ? "no " : "", VTY_NEWLINE);
 	if (g_cfg->call_agent_addr)
@@ -524,7 +524,7 @@
       "Number options\n" "Endpoints available\n" "Number endpoints\n")
 {
 	/* + 1 as we start counting at one */
-	g_cfg->trunk.number_endpoints = atoi(argv[0]) + 1;
+	g_cfg->trunk.vty_number_endpoints = atoi(argv[0]) + 1;
 	return CMD_SUCCESS;
 }
 
diff --git a/tests/mgcp/mgcp_test.c b/tests/mgcp/mgcp_test.c
index 99491e6..f35dc93 100644
--- a/tests/mgcp/mgcp_test.c
+++ b/tests/mgcp/mgcp_test.c
@@ -563,9 +563,8 @@
 
 	cfg = mgcp_config_alloc();
 
-	cfg->trunk.number_endpoints = 64;
+	cfg->trunk.vty_number_endpoints = 64;
 	mgcp_endpoints_allocate(&cfg->trunk);
-
 	cfg->policy_cb = mgcp_test_policy_cb;
 
 	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
@@ -685,7 +684,7 @@
 
 	cfg = mgcp_config_alloc();
 
-	cfg->trunk.number_endpoints = 64;
+	cfg->trunk.vty_number_endpoints = 64;
 	mgcp_endpoints_allocate(&cfg->trunk);
 
 	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
@@ -737,7 +736,7 @@
 	cfg = mgcp_config_alloc();
 	cfg->rqnt_cb = rqnt_cb;
 
-	cfg->trunk.number_endpoints = 64;
+	cfg->trunk.vty_number_endpoints = 64;
 	mgcp_endpoints_allocate(&cfg->trunk);
 
 	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
@@ -1025,7 +1024,7 @@
 
 	endp.type = &ep_typeset.rtp;
 
-	trunk.number_endpoints = 1;
+	trunk.vty_number_endpoints = 1;
 	trunk.endpoints = &endp;
 	trunk.force_constant_ssrc = patch_ssrc;
 	trunk.force_aligned_timing = patch_ts;
@@ -1097,7 +1096,7 @@
 	printf("Testing multiple payload types\n");
 
 	cfg = mgcp_config_alloc();
-	cfg->trunk.number_endpoints = 64;
+	cfg->trunk.vty_number_endpoints = 64;
 	mgcp_endpoints_allocate(&cfg->trunk);
 	cfg->policy_cb = mgcp_test_policy_cb;
 	mgcp_endpoints_allocate(mgcp_trunk_alloc(cfg, 1));
@@ -1228,7 +1227,7 @@
 	printf("Testing no sequence flow on initial packet\n");
 
 	cfg = mgcp_config_alloc();
-	cfg->trunk.number_endpoints = 64;
+	cfg->trunk.vty_number_endpoints = 64;
 	mgcp_endpoints_allocate(&cfg->trunk);
 
 	endp = &cfg->trunk.endpoints[1];
@@ -1274,7 +1273,7 @@
 	printf("Testing no rtpmap name\n");
 	cfg = mgcp_config_alloc();
 
-	cfg->trunk.number_endpoints = 64;
+	cfg->trunk.vty_number_endpoints = 64;
 	cfg->trunk.audio_send_name = 0;
 	mgcp_endpoints_allocate(&cfg->trunk);
 

-- 
To view, visit https://gerrit.osmocom.org/4779
To unsubscribe, visit https://gerrit.osmocom.org/settings

Gerrit-MessageType: merged
Gerrit-Change-Id: I3994af016fb96427263edbba05f560743f85fdd4
Gerrit-PatchSet: 6
Gerrit-Project: osmo-mgw
Gerrit-Branch: master
Gerrit-Owner: dexter <pmaier at sysmocom.de>
Gerrit-Reviewer: Holger Freyther <holger at freyther.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: dexter <pmaier at sysmocom.de>



More information about the gerrit-log mailing list