Mcast rewrite no memcpy

[vpp.git] / src / vnet / adj / adj_mcast.c

diff --git a/src/vnet/adj/adj_mcast.c b/src/vnet/adj/adj_mcast.c
index a3ba4d6..4f678e4 100644 (file)
--- a/src/vnet/adj/adj_mcast.c
+++ b/src/vnet/adj/adj_mcast.c
@@ -100,7 +100,9 @@ adj_mcast_add_or_lock (fib_protocol_t proto,
  */
 void
 adj_mcast_update_rewrite (adj_index_t adj_index,
-                          u8 *rewrite)
+                          u8 *rewrite,
+                          u8 offset,
+                          u32 mask)
 {
     ip_adjacency_t *adj;
 
@@ -118,6 +120,13 @@ adj_mcast_update_rewrite (adj_index_t adj_index,
                                         vnet_get_main(),
                                         adj->rewrite_header.sw_if_index),
                                     rewrite);
+    /*
+     * set the fields corresponding to the mcast IP address rewrite
+     * The mask must be stored in network byte order, since the packet's
+     * IP address will also be in network order.
+     */
+    adj->rewrite_header.dst_mcast_offset = offset;
+    adj->rewrite_header.dst_mcast_mask = clib_host_to_net_u32(mask);
 }
 
 void