Bugfix: Rename proto_agent global channel variable

The PROTO_AGENT variable holding the channel for various was named as the same
one for FlexRAN. In C, global variables with the same name are merged into one,
which had the effect that the same queues where used for PROTO_AGENT and
FlexRAN, locking the FlexRAN RX thread. Renaming the PROTO_AGENT variable (it
was introduced second) resolves this issue.

openair2/LAYER2/PROTO_AGENT/proto_agent_net_comm.c

@@ -37,7 +37,7 @@
 #include "proto_agent_net_comm.h"
 #include "common/utils/LOG/log.h"
 
-proto_agent_channel_t *agent_channel[NUM_MAX_ENB][ENB_AGENT_MAX];
+proto_agent_channel_t *proto_channel[NUM_MAX_ENB][ENB_AGENT_MAX];
 proto_agent_channel_instance_t channel_instance;
 int proto_agent_channel_id = 0;
 
@@ -47,7 +47,7 @@ int proto_agent_msg_send(mod_id_t mod_id, proto_agent_id_t agent_id, void *data,
     goto error;
   }
   proto_agent_channel_t *channel;
-  channel = agent_channel[mod_id][agent_id];
+  channel = proto_channel[mod_id][agent_id];
   
   /*Check if agent has a channel registered*/
   if (channel == NULL) {
@@ -67,7 +67,7 @@ int proto_agent_msg_recv(mod_id_t mod_id, proto_agent_id_t agent_id, void **data
     goto error;
   }
   proto_agent_channel_t *channel;
-  channel = agent_channel[mod_id][agent_id];
+  channel = proto_channel[mod_id][agent_id];
   
   /*Check if agent has a channel registered*/
   if (channel == NULL) {
@@ -90,10 +90,10 @@ int proto_agent_register_channel(mod_id_t mod_id, proto_agent_channel_t *channel
 
   if (agent_id == ENB_AGENT_MAX) {
     for (i = 0; i < ENB_AGENT_MAX; i++) {
-      agent_channel[mod_id][i] = channel;
+      proto_channel[mod_id][i] = channel;
     }
   } else {
-    agent_channel[mod_id][agent_id] = channel;
+    proto_channel[mod_id][agent_id] = channel;
   }
   return 0;
 }
@@ -103,10 +103,10 @@ void proto_agent_unregister_channel(mod_id_t mod_id, proto_agent_id_t agent_id)
 
   if (agent_id == ENB_AGENT_MAX) {
     for (i = 0; i < ENB_AGENT_MAX; i++) {
-      agent_channel[mod_id][i] = NULL;
+      proto_channel[mod_id][i] = NULL;
     }
   } else {
-    agent_channel[mod_id][agent_id] = NULL;
+    proto_channel[mod_id][agent_id] = NULL;
   }
 }
 
@@ -148,9 +148,9 @@ int proto_agent_destroy_channel(int channel_id) {
   /*Unregister the channel from all agents*/
   for (i = 0; i < NUM_MAX_ENB; i++) {
     for (j = 0; j < ENB_AGENT_MAX; j++) {
-      if (agent_channel[i][j] != NULL) {
-	if (agent_channel[i][j]->channel_id == e->channel_id) {
-	  agent_channel[i][j] = NULL;
+      if (proto_channel[i][j] != NULL) {
+	if (proto_channel[i][j]->channel_id == e->channel_id) {
+	  proto_channel[i][j] = NULL;
 	}
       }
     }
@@ -172,7 +172,7 @@ err_code_t proto_agent_init_channel_container(void) {
 
   for (i = 0; i < NUM_MAX_ENB; i++) {
     for (j = 0; j < ENB_AGENT_MAX; j++) {
-    agent_channel[i][j] = NULL;
+    proto_channel[i][j] = NULL;
     }
   }