bugfix:mirror流量的MAC地址是默认值

common/src/packet.cpp

@@ -1323,6 +1323,37 @@ int packet_get_outermost_tuple6(const struct packet *handler, struct tuple6 *tup
     }
 }
 
+int packet_get_outermost_mac(const struct packet *handler, unsigned char *src_mac, unsigned char *dst_mac)
+{
+    const struct layer_record *layer_l2 = NULL;
+    const struct layer_record *layer = NULL;
+    struct ethhdr *ethhdr = NULL;
+
+    for (int8_t i = 0; i < handler->layers_used; i++)
+    {
+        layer = &handler->layers[i];
+
+        // first get L2 layer
+        if (layer->type & LAYER_TYPE_ETHER)
+        {
+            layer_l2 = layer;
+            break;
+        }
+    }
+
+    if (layer_l2)
+    {
+        ethhdr = (struct ethhdr *)handler->data_ptr;
+        memcpy(src_mac, ethhdr->h_source, ETH_ALEN);
+        memcpy(dst_mac, ethhdr->h_dest, ETH_ALEN);
+        return 0;
+    }
+    else
+    {
+        return -1;
+    }
+}
+
 const struct layer_record *packet_get_innermost_layer(const struct packet *handler, enum layer_type type)
 {
     const struct layer_record *layer = NULL;