INT4 add_flow_entry(gn_switch_t *sw, gn_flow_t *flow)
{
uuid_t uuid_gen;
if(sw->conn_state == INITSTATE)
{
return GN_ERR;
}
pthread_mutex_lock(&sw->flow_entry_mutex);
if(NULL == find_flow_entry(sw, flow))
{
uuid_generate_random(uuid_gen);
uuid_unparse(uuid_gen, flow->uuid);
gn_flow_t *p_new_flow = copy_flow_entry(flow);
if(0 != p_new_flow)
{
p_new_flow->status = ENTRY_ENABLED;
if(sw->flow_entries)
{
gn_flow_t *p_flow = sw->flow_entries;
while(p_flow->next)
{
p_flow = p_flow->next;
};
p_flow->next = p_new_flow;
p_new_flow->prev = p_flow;
}
else
{
sw->flow_entries = p_new_flow;
}
}
}
else
{
pthread_mutex_unlock(&sw->flow_entry_mutex);
return GN_OK;
}
pthread_mutex_unlock(&sw->flow_entry_mutex);
return GN_OK;
}
INT4 add_flow_entry(gn_switch_t *sw, gn_flow_t *flow)
{
uuid_t uuid_gen;
if(sw->state == 0)
{
return GN_ERR;
}
pthread_mutex_lock(&sw->flow_entry_mutex);
if(NULL == find_flow_entry(sw, flow))
{
uuid_generate_random(uuid_gen);
uuid_unparse(uuid_gen, flow->uuid);
if(sw->flow_entries)
{
gn_flow_t *p_flow = sw->flow_entries;
while(p_flow->next)
{
p_flow = p_flow->next;
};
p_flow->next = flow;
}
else
{
flow->prev = NULL;
flow->next = NULL;
sw->flow_entries = flow;
}
}
else
{
pthread_mutex_unlock(&sw->flow_entry_mutex);
return GN_ERR;
}
flow->status = ENTRY_DISABLED;
pthread_mutex_unlock(&sw->flow_entry_mutex);
return GN_OK;
}
INT4 flow_entry_timeout(gn_switch_t *sw, gn_flow_t *flow)
{
pthread_mutex_lock(&sw->flow_entry_mutex);
gn_flow_t *p_flow = find_flow_entry(sw, flow);
if(p_flow)
{
p_flow->status = ENTRY_TIMEOUT;
if(NULL == p_flow->prev)
{
sw->flow_entries = p_flow->next;
}
else
{
p_flow->prev->next = p_flow->next;
}
//delete flow entry from list
if(p_flow->next)
{
p_flow->next->prev = p_flow->prev;
}
if(p_flow->prev)
{
p_flow->prev->next = p_flow->next;
}
else
{
sw->flow_entries = p_flow->next;
}
//recycle the memory
gn_flow_free(p_flow);
}
pthread_mutex_unlock(&sw->flow_entry_mutex);
return GN_OK;
}
