Commit e3e01a64 authored by Xenofon Foukas's avatar Xenofon Foukas
Browse files

Added continuous update functionality in the MAC layer

parent 3ad4d26f
......@@ -35,14 +35,22 @@
*/
#include "enb_agent_mac.h"
#include "enb_agent_extern.h"
#include "enb_agent_common.h"
#include "enb_agent_mac_internal.h"
#include "log.h"
/*Flags showing if a mac agent has already been registered*/
unsigned int mac_agent_registered[NUM_MAX_ENB];
int enb_agent_mac_handle_stats(mid_t mod_id, const void *params, Protocol__ProgranMessage **msg){
// TODO: Must deal with sanitization of input
// TODO: Must check if RNTIs and cell ids of the request actually exist
// TODO: Must resolve conflicts among stats requests
int i;
void *buffer;
int size;
......@@ -71,15 +79,13 @@ int enb_agent_mac_handle_stats(mid_t mod_id, const void *params, Protocol__Progr
switch(stats_req->body_case) {
case PROTOCOL__PRP_STATS_REQUEST__BODY_COMPLETE_STATS_REQUEST: ;
Protocol__PrpCompleteStatsRequest *comp_req = stats_req->complete_stats_request;
if (comp_req->report_frequency == PROTOCOL__PRP_STATS_REPORT_FREQ__PRSRF_CONTINUOUS) {
//TODO: Must create an event based report mechanism
*msg = NULL;
return 0;
} else if (comp_req->report_frequency == PROTOCOL__PRP_STATS_REPORT_FREQ__PRSRF_OFF) {
if (comp_req->report_frequency == PROTOCOL__PRP_STATS_REPORT_FREQ__PRSRF_OFF) {
/*Disable both periodic and continuous updates*/
enb_agent_disable_cont_mac_stats_update(mod_id);
enb_agent_destroy_timer_by_task_id(xid);
*msg = NULL;
return 0;
} else { //One-off or periodical reporting
} else { //One-off, periodical or continuous reporting
//Set the proper flags
ue_flags = comp_req->ue_report_flags;
c_flags = comp_req->cell_report_flags;
......@@ -136,6 +142,16 @@ int enb_agent_mac_handle_stats(mid_t mod_id, const void *params, Protocol__Progr
usec_interval = usec_interval%(1000*1000);
}
enb_agent_create_timer(sec_interval, usec_interval, ENB_AGENT_DEFAULT, enb_id, ENB_AGENT_TIMER_TYPE_PERIODIC, xid, enb_agent_handle_timed_task,(void*) timer_args, &timer_id);
} else if (comp_req->report_frequency == PROTOCOL__PRP_STATS_REPORT_FREQ__PRSRF_CONTINUOUS) {
/*If request was for continuous updates, disable the previous configuration and
set up a new one*/
enb_agent_disable_cont_mac_stats_update(mod_id);
stats_request_config_t request_config;
request_config.report_type = PROTOCOL__PRP_STATS_TYPE__PRST_COMPLETE_STATS;
request_config.report_frequency = PROTOCOL__PRP_STATS_REPORT_FREQ__PRSRF_ONCE;
request_config.period = 0;
request_config.config = &report_config;
enb_agent_enable_cont_mac_stats_update(enb_id, xid, &request_config);
}
}
break;
......@@ -453,7 +469,7 @@ int enb_agent_mac_stats_reply(mid_t mod_id,
dl_report->n_csi_report = 1;
//TODO:Create the actual CSI reports.
Protocol__PrpDlCsi **csi_reports;
csi_reports = malloc(sizeof(Protocol__PrpDlCsi *));
csi_reports = malloc(sizeof(Protocol__PrpDlCsi *)*dl_report->n_csi_report);
if (csi_reports == NULL)
goto error;
for (j = 0; j < dl_report->n_csi_report; j++) {
......@@ -505,7 +521,7 @@ int enb_agent_mac_stats_reply(mid_t mod_id,
paging_report->n_paging_info = 1;
//Provide a report for each pending paging message
Protocol__PrpPagingInfo **p_info;
p_info = malloc(sizeof(Protocol__PrpPagingInfo *));
p_info = malloc(sizeof(Protocol__PrpPagingInfo *) * paging_report->n_paging_info);
if (p_info == NULL)
goto error;
for (j = 0; j < paging_report->n_paging_info; j++) {
......@@ -975,15 +991,21 @@ int enb_agent_mac_destroy_sf_trigger(Protocol__ProgranMessage *msg) {
return -1;
}
void enb_agent_send_sr_info(mid_t mod_id, msg_context_t *context) {
/***********************************************
* eNB agent - technology mac API implementation
***********************************************/
void enb_agent_send_sr_info(mid_t mod_id) {
int size;
Protocol__ProgranMessage *msg;
void *data;
int priority;
err_code_t err_code;
int xid = 0;
/*TODO: Must use a proper xid*/
err_code = enb_agent_mac_sr_info(mod_id, (void *) &(context->tx_xid), &msg);
err_code = enb_agent_mac_sr_info(mod_id, (void *) &xid, &msg);
if (err_code < 0) {
goto error;
}
......@@ -997,20 +1019,23 @@ void enb_agent_send_sr_info(mid_t mod_id, msg_context_t *context) {
}
LOG_D(ENB_AGENT,"sent message with size %d\n", size);
return;
}
error:
LOG_D(ENB_AGENT, "Could not send sr message\n");
}
void enb_agent_send_sf_trigger(mid_t mod_id, msg_context_t *context) {
void enb_agent_send_sf_trigger(mid_t mod_id) {
int size;
Protocol__ProgranMessage *msg;
void *data;
int priority;
err_code_t err_code;
int xid = 0;
/*TODO: Must use a proper xid*/
err_code = enb_agent_mac_sf_trigger(mod_id, (void *) &(context->tx_xid), &msg);
err_code = enb_agent_mac_sf_trigger(mod_id, (void *) &xid, &msg);
if (err_code < 0) {
goto error;
}
......@@ -1024,6 +1049,60 @@ void enb_agent_send_sf_trigger(mid_t mod_id, msg_context_t *context) {
}
LOG_D(ENB_AGENT,"sent message with size %d\n", size);
return;
}
error:
LOG_D(ENB_AGENT, "Could not send sf trigger message\n");
}
void enb_agent_send_update_mac_stats(mid_t mod_id) {
Protocol__ProgranMessage *current_report, *msg;
void *data;
int size;
err_code_t err_code;
int priority;
mac_stats_updates_context_t stats_context = mac_stats_context[mod_id];
if (pthread_mutex_lock(mac_stats_context[mod_id].mutex)) {
goto error;
}
/*Create a fresh report with the required flags*/
err_code = enb_agent_mac_handle_stats(mod_id, (void *) mac_stats_context[mod_id].stats_req, &current_report);
if (err_code < 0) {
goto error;
}
/*TODO:Check if a previous reports exists and if yes, generate a report
*that is the diff between the old and the new report,
*respecting the thresholds. Otherwise send the new report*/
if (mac_stats_context[mod_id].prev_stats_reply != NULL) {
msg = enb_agent_generate_diff_mac_stats_report(current_report, mac_stats_context[mod_id].prev_stats_reply);
/*Destroy the old stats*/
enb_agent_destroy_progran_message(mac_stats_context[mod_id].prev_stats_reply);
}
/*Use the current report for future comparissons*/
mac_stats_context[mod_id].prev_stats_reply = current_report;
if (pthread_mutex_unlock(mac_stats_context[mod_id].mutex)) {
goto error;
}
if (msg != NULL){
data=enb_agent_pack_message(msg, &size);
/*Send any stats updates using the MAC channel of the eNB*/
if (enb_agent_msg_send(mod_id, ENB_AGENT_MAC, data, size, priority)) {
err_code = PROTOCOL__PROGRAN_ERR__MSG_ENQUEUING;
goto error;
}
LOG_D(ENB_AGENT,"sent message with size %d\n", size);
return;
}
error:
LOG_D(ENB_AGENT, "Could not send sf trigger message\n");
......@@ -1035,12 +1114,14 @@ int enb_agent_register_mac_xface(mid_t mod_id, AGENT_MAC_xface *xface) {
return -1;
}
xface->agent_ctxt = &shared_ctxt[mod_id];
//xface->agent_ctxt = &shared_ctxt[mod_id];
xface->enb_agent_send_sr_info = enb_agent_send_sr_info;
xface->enb_agent_send_sf_trigger = enb_agent_send_sf_trigger;
xface->enb_agent_send_update_mac_stats = enb_agent_send_update_mac_stats;
mac_agent_registered[mod_id] = 1;
return 1;
return 0;
}
int enb_agent_unregister_mac_xface(mid_t mod_id, AGENT_MAC_xface *xface) {
......@@ -1050,10 +1131,97 @@ int enb_agent_unregister_mac_xface(mid_t mod_id, AGENT_MAC_xface *xface) {
return -1;
}
xface->agent_ctxt = NULL;
//xface->agent_ctxt = NULL;
xface->enb_agent_send_sr_info = NULL;
xface->enb_agent_send_sf_trigger = NULL;
return 0;
}
/******************************************************
*Implementations of enb_agent_mac_internal.h functions
******************************************************/
err_code_t enb_agent_init_cont_mac_stats_update(mid_t mod_id) {
/*Initialize the Mac stats update structure*/
/*Initially the continuous update is set to false*/
mac_stats_context[mod_id].cont_update = 0;
mac_stats_context[mod_id].is_initialized = 1;
mac_stats_context[mod_id].stats_req = NULL;
mac_stats_context[mod_id].prev_stats_reply = NULL;
mac_stats_context[mod_id].mutex = calloc(1, sizeof(pthread_mutex_t));
if (mac_stats_context[mod_id].mutex == NULL)
goto error;
if (pthread_mutex_init(mac_stats_context[mod_id].mutex, NULL))
goto error;;
return 0;
error:
return -1;
}
err_code_t enb_agent_destroy_cont_mac_stats_update(mid_t mod_id) {
/*Disable the continuous updates for the MAC*/
mac_stats_context[mod_id].cont_update = 0;
mac_stats_context[mod_id].is_initialized = 0;
enb_agent_destroy_progran_message(mac_stats_context[mod_id].stats_req);
enb_agent_destroy_progran_message(mac_stats_context[mod_id].prev_stats_reply);
free(mac_stats_context[mod_id].mutex);
mac_agent_registered[mod_id] = NULL;
return 1;
}
err_code_t enb_agent_enable_cont_mac_stats_update(mid_t mod_id,
xid_t xid, stats_request_config_t *stats_req) {
/*Enable the continuous updates for the MAC*/
if (pthread_mutex_lock(mac_stats_context[mod_id].mutex)) {
goto error;
}
Protocol__ProgranMessage *req_msg;
enb_agent_mac_stats_request(mod_id, xid, stats_req, &req_msg);
mac_stats_context[mod_id].stats_req = req_msg;
mac_stats_context[mod_id].prev_stats_reply = NULL;
mac_stats_context[mod_id].cont_update = 1;
mac_stats_context[mod_id].xid = xid;
if (pthread_mutex_unlock(mac_stats_context[mod_id].mutex)) {
goto error;
}
return 0;
error:
LOG_E(ENB_AGENT, "mac_stats_context for eNB %d is not initialized\n", mod_id);
return -1;
}
err_code_t enb_agent_disable_cont_mac_stats_update(mid_t mod_id) {
/*Disable the continuous updates for the MAC*/
if (pthread_mutex_lock(mac_stats_context[mod_id].mutex)) {
goto error;
}
mac_stats_context[mod_id].cont_update = 0;
mac_stats_context[mod_id].xid = 0;
if (mac_stats_context[mod_id].stats_req != NULL) {
enb_agent_destroy_progran_message(mac_stats_context[mod_id].stats_req);
}
if (mac_stats_context[mod_id].prev_stats_reply != NULL) {
enb_agent_destroy_progran_message(mac_stats_context[mod_id].prev_stats_reply);
}
if (pthread_mutex_unlock(mac_stats_context[mod_id].mutex)) {
goto error;
}
return 0;
error:
LOG_E(ENB_AGENT, "mac_stats_context for eNB %d is not initialized\n", mod_id);
return -1;
}
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