IPv6: Make link-local configurable per-interface (VPP-1446)

[vpp.git] / src / vnet / ip / ip6_forward.c

diff --git a/src/vnet/ip/ip6_forward.c b/src/vnet/ip/ip6_forward.c
index 9a9a64b..be0037e 100644 (file)
--- a/src/vnet/ip/ip6_forward.c
+++ b/src/vnet/ip/ip6_forward.c
@@ -201,6 +201,7 @@ ip6_add_del_interface_address (vlib_main_t * vm,
   clib_error_t *error;
   u32 if_address_index;
   ip6_address_fib_t ip6_af, *addr_fib = 0;
+  ip6_address_t ll_addr;
 
   /* local0 interface doesn't support IP addressing */
   if (sw_if_index == 0)
@@ -209,6 +210,36 @@ ip6_add_del_interface_address (vlib_main_t * vm,
        clib_error_create ("local0 interface doesn't support IP addressing");
     }
 
+  if (ip6_address_is_link_local_unicast (address))
+    {
+      if (address_length != 128)
+       {
+         vnm->api_errno = VNET_API_ERROR_ADDRESS_LENGTH_MISMATCH;
+         return
+           clib_error_create
+           ("prefix length of link-local address must be 128");
+       }
+      if (!is_del)
+       {
+         return ip6_neighbor_set_link_local_address (vm, sw_if_index,
+                                                     address);
+       }
+      else
+       {
+         ll_addr = ip6_neighbor_get_link_local_address (sw_if_index);
+         if (ip6_address_is_equal (&ll_addr, address))
+           {
+             vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_DELETABLE;
+             return clib_error_create ("address not deletable");
+           }
+         else
+           {
+             vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_FOUND_FOR_INTERFACE;
+             return clib_error_create ("address not found");
+           }
+       }
+    }
+
   vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
   vec_validate (im->mfib_index_by_sw_if_index, sw_if_index);
 
@@ -536,9 +567,6 @@ ip6_load_balance (vlib_main_t * vm,
   n_left_from = frame->n_vectors;
   next = node->cached_next_index;
 
-  if (node->flags & VLIB_NODE_FLAG_TRACE)
-    ip6_forward_next_trace (vm, node, frame, VLIB_TX);
-
   while (n_left_from > 0)
     {
       vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
@@ -736,6 +764,9 @@ ip6_load_balance (vlib_main_t * vm,
       vlib_put_next_frame (vm, node, next, n_left_to_next);
     }
 
+  if (node->flags & VLIB_NODE_FLAG_TRACE)
+    ip6_forward_next_trace (vm, node, frame, VLIB_TX);
+
   return frame->n_vectors;
 }
 
@@ -2514,8 +2545,8 @@ static clib_error_t *
 ip6_hop_by_hop_init (vlib_main_t * vm)
 {
   ip6_hop_by_hop_main_t *hm = &ip6_hop_by_hop_main;
-  memset (hm->options, 0, sizeof (hm->options));
-  memset (hm->trace, 0, sizeof (hm->trace));
+  clib_memset (hm->options, 0, sizeof (hm->options));
+  clib_memset (hm->trace, 0, sizeof (hm->trace));
   hm->next_override = IP6_LOOKUP_NEXT_POP_HOP_BY_HOP;
   return (0);
 }
@@ -2649,7 +2680,7 @@ ip6_lookup_init (vlib_main_t * vm)
   {
     icmp6_neighbor_solicitation_header_t p;
 
-    memset (&p, 0, sizeof (p));
+    clib_memset (&p, 0, sizeof (p));
 
     p.ip.ip_version_traffic_class_and_flow_label =
       clib_host_to_net_u32 (0x6 << 28);