Add epoll support, fix ETCP timestamp bug, optimize uasync with cached pollfds

lib/ll_queue.c

@@ -242,7 +242,8 @@ int queue_data_put(struct ll_queue* q, struct ll_entry* entry, uint32_t id) {
     q->tail = entry;
     
     q->count++;
-    q->total_bytes += entry->size;
+    entry->int_len=entry->len;
+    q->total_bytes += entry->int_len;
 
     size_t send_q_bytes = queue_total_bytes(q);
 //    DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "check total bytes: new_q_len=%d element_size:%d", send_q_bytes, entry->size);
@@ -284,7 +285,8 @@ int queue_data_put_first(struct ll_queue* q, struct ll_entry* entry, uint32_t id
     q->head = entry;
     
     q->count++;
-    q->total_bytes += entry->size;
+    entry->int_len=entry->len;
+    q->total_bytes += entry->int_len;
     
     add_to_hash(q, entry);
     
@@ -311,7 +313,7 @@ struct ll_entry* queue_data_get(struct ll_queue* q) {
     if (!q->head) q->tail = NULL;
     
     q->count--;
-    q->total_bytes -= entry->size;
+    q->total_bytes -= entry->int_len;
     
     entry->next = NULL;
     entry->prev = NULL;
@@ -398,7 +400,7 @@ int queue_remove_data(struct ll_queue* q, struct ll_entry* entry) {
     }
     
     q->count--;
-    q->total_bytes -= entry->size;
+    q->total_bytes -= entry->int_len;
     
     entry->next = NULL;
     entry->prev = NULL;