X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=vnet%2Fvnet%2Fethernet%2Farp.c;h=7d6184381c9516b03da01914ff1be939a582a0a2;hb=c631f2de6dd06b4cbb92bf8398839b882344fd25;hp=541355f9f89bbbc839e080502b0f974d4a02104f;hpb=83486fb3ef0f25f9787f9aa898eafc6562f1540e;p=vpp.git

diff --git a/vnet/vnet/ethernet/arp.c b/vnet/vnet/ethernet/arp.c
index 541355f9f89..7d6184381c9 100644
--- a/vnet/vnet/ethernet/arp.c
+++ b/vnet/vnet/ethernet/arp.c
@@ -2343,6 +2343,43 @@ arp_term_init (vlib_main_t * vm)
 
 VLIB_INIT_FUNCTION (arp_term_init);
 
+void
+change_arp_mac (u32 sw_if_index, ethernet_arp_ip4_entry_t * e)
+{
+  if (e->sw_if_index == sw_if_index)
+    {
+
+      if (ADJ_INDEX_INVALID != e->adj_index[FIB_LINK_IP4])
+	{
+	  // the update rewrite function takes the dst mac (which is not changing)
+	  // the new source mac will be retrieved from the interface
+	  // when the full rewrite is constructed.
+	  adj_nbr_update_rewrite (e->adj_index[FIB_LINK_IP4],
+				  e->ethernet_address);
+	}
+      if (ADJ_INDEX_INVALID != e->adj_index[FIB_LINK_MPLS])
+	{
+	  adj_nbr_update_rewrite (e->adj_index[FIB_LINK_MPLS],
+				  e->ethernet_address);
+	}
+
+    }
+}
+
+void
+ethernet_arp_change_mac (vnet_main_t * vnm, u32 sw_if_index)
+{
+  ethernet_arp_main_t *am = &ethernet_arp_main;
+  ethernet_arp_ip4_entry_t *e;
+
+  /* *INDENT-OFF* */
+  pool_foreach (e, am->ip4_entry_pool,
+    ({
+      change_arp_mac (sw_if_index, e);
+    }));
+  /* *INDENT-ON* */
+}
+
 /*
  * fd.io coding-style-patch-verification: ON
  *