tunnel: support copying TTL and flow label from inner to outer

[vpp.git] / src / vnet / gre / gre.c

diff --git a/src/vnet/gre/gre.c b/src/vnet/gre/gre.c
index 5b102ae..a355a22 100644 (file)
--- a/src/vnet/gre/gre.c
+++ b/src/vnet/gre/gre.c
@@ -340,7 +340,7 @@ gre46_fixup (vlib_main_t * vm,
   ip0->ip6.payload_length =
     clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
                          sizeof (ip0->ip6));
-  tunnel_encap_fixup_4o6 (flags, (ip4_header_t *) (ip0 + 1), &ip0->ip6);
+  tunnel_encap_fixup_4o6 (flags, b0, (ip4_header_t *) (ip0 + 1), &ip0->ip6);
 }
 
 static void
@@ -410,7 +410,11 @@ gre_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
 
   ti = gm->tunnel_index_by_sw_if_index[sw_if_index];
   t = pool_elt_at_index (gm->tunnels, ti);
-  af = ADJ_FLAG_MIDCHAIN_IP_STACK;
+
+  if (t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_INNER_HASH)
+    af = ADJ_FLAG_MIDCHAIN_FIXUP_FLOW_HASH;
+  else
+    af = ADJ_FLAG_MIDCHAIN_IP_STACK;
 
   if (VNET_LINK_ETHERNET == adj_get_link_type (ai))
     af |= ADJ_FLAG_MIDCHAIN_NO_COUNT;
@@ -429,12 +433,18 @@ adj_walk_rc_t
 mgre_mk_complete_walk (adj_index_t ai, void *data)
 {
   mgre_walk_ctx_t *ctx = data;
+  adj_flags_t af;
+
+  if (ctx->t->flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_INNER_HASH)
+    af = ADJ_FLAG_MIDCHAIN_FIXUP_FLOW_HASH;
+  else
+    af = ADJ_FLAG_MIDCHAIN_IP_STACK;
 
   adj_nbr_midchain_update_rewrite
     (ai, gre_get_fixup (ctx->t->tunnel_dst.fp_proto,
                        adj_get_link_type (ai)),
      uword_to_pointer (ctx->t->flags, void *),
-     ADJ_FLAG_MIDCHAIN_IP_STACK,
+     af,
      gre_build_rewrite (vnet_get_main (),
                        ctx->t->sw_if_index,
                        adj_get_link_type (ai),