X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fipip%2Fipip.c;h=d43bcd1cb5399cc90001032a8f53e46936f849ef;hb=a91cb4590;hp=87aba12ca8965c5e4bc98ace774c1549f08b4423;hpb=e6b83059af3365ab12bbe93655a7dea6f691dbda;p=vpp.git

diff --git a/src/vnet/ipip/ipip.c b/src/vnet/ipip/ipip.c
index 87aba12ca89..d43bcd1cb53 100644
--- a/src/vnet/ipip/ipip.c
+++ b/src/vnet/ipip/ipip.c
@@ -93,6 +93,9 @@ ipip_build_rewrite (vnet_main_t * vnm, u32 sw_if_index,
 	case VNET_LINK_IP4:
 	  ip4->protocol = IP_PROTOCOL_IP_IN_IP;
 	  break;
+	case VNET_LINK_MPLS:
+	  ip4->protocol = IP_PROTOCOL_MPLS_IN_IP;
+	  break;
 	default:
 	  break;
 	}
@@ -121,6 +124,9 @@ ipip_build_rewrite (vnet_main_t * vnm, u32 sw_if_index,
 	case VNET_LINK_IP4:
 	  ip6->protocol = IP_PROTOCOL_IP_IN_IP;
 	  break;
+	case VNET_LINK_MPLS:
+	  ip6->protocol = IP_PROTOCOL_MPLS_IN_IP;
+	  break;
 	default:
 	  break;
 	}
@@ -178,7 +184,7 @@ ipip46_fixup (vlib_main_t * vm, const ip_adjacency_t * adj, vlib_buffer_t * b,
   ip6->payload_length =
     clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b) -
 			  sizeof (*ip6));
-  tunnel_encap_fixup_4o6 (flags, ((ip4_header_t *) (ip6 + 1)), ip6);
+  tunnel_encap_fixup_4o6 (flags, b, ((ip4_header_t *) (ip6 + 1)), ip6);
 }
 
 static void
@@ -201,6 +207,47 @@ ipip66_fixup (vlib_main_t * vm,
   tunnel_encap_fixup_6o6 (flags, ip6 + 1, ip6);
 }
 
+static void
+ipipm6_fixup (vlib_main_t *vm, const ip_adjacency_t *adj, vlib_buffer_t *b,
+	      const void *data)
+{
+  tunnel_encap_decap_flags_t flags;
+  ip6_header_t *ip6;
+
+  flags = pointer_to_uword (data);
+
+  /* Must set locally originated otherwise we're not allowed to
+     fragment the packet later and we'll get an unwanted hop-limt
+     decrement */
+  b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
+
+  ip6 = vlib_buffer_get_current (b);
+  ip6->payload_length =
+    clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b) - sizeof (*ip6));
+  tunnel_encap_fixup_mplso6 (flags, b, (mpls_unicast_header_t *) (ip6 + 1),
+			     ip6);
+}
+
+static void
+ipipm4_fixup (vlib_main_t *vm, const ip_adjacency_t *adj, vlib_buffer_t *b,
+	      const void *data)
+{
+  tunnel_encap_decap_flags_t flags;
+  ip4_header_t *ip4;
+
+  flags = pointer_to_uword (data);
+
+  /* Must set locally originated otherwise we'll do a TTL decrement
+   * during ip4-rewrite */
+  b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
+
+  ip4 = vlib_buffer_get_current (b);
+  ip4->length =
+    clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b) - sizeof (*ip4));
+  tunnel_encap_fixup_mplso4 (flags, (mpls_unicast_header_t *) (ip4 + 1), ip4);
+  ip4->checksum = ip4_header_checksum (ip4);
+}
+
 static void
 ipip_tunnel_stack (adj_index_t ai)
 {
@@ -265,8 +312,12 @@ ipip_get_fixup (const ipip_tunnel_t * t, vnet_link_t lt, adj_flags_t * aflags)
     return (ipip66_fixup);
   if (t->transport == IPIP_TRANSPORT_IP6 && lt == VNET_LINK_IP4)
     return (ipip46_fixup);
+  if (t->transport == IPIP_TRANSPORT_IP6 && lt == VNET_LINK_MPLS)
+    return (ipipm6_fixup);
   if (t->transport == IPIP_TRANSPORT_IP4 && lt == VNET_LINK_IP6)
     return (ipip64_fixup);
+  if (t->transport == IPIP_TRANSPORT_IP4 && lt == VNET_LINK_MPLS)
+    return (ipipm4_fixup);
   if (t->transport == IPIP_TRANSPORT_IP4 && lt == VNET_LINK_IP4)
     {
       *aflags = *aflags | ADJ_FLAG_MIDCHAIN_FIXUP_IP4O4_HDR;
@@ -288,7 +339,11 @@ ipip_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
   if (!t)
     return;
 
-  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;
 
@@ -317,14 +372,18 @@ mipip_mk_complete_walk (adj_index_t ai, void *data)
   af = ADJ_FLAG_NONE;
   fixup = ipip_get_fixup (ctx->t, adj_get_link_type (ai), &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, fixup,
      uword_to_pointer (ctx->t->flags, void *),
-     ADJ_FLAG_MIDCHAIN_IP_STACK, ipip_build_rewrite (vnet_get_main (),
-						     ctx->t->sw_if_index,
-						     adj_get_link_type (ai),
-						     &teib_entry_get_nh
-						     (ctx->ne)->fp_addr));
+     af, ipip_build_rewrite (vnet_get_main (),
+			     ctx->t->sw_if_index,
+			     adj_get_link_type (ai),
+			     &teib_entry_get_nh (ctx->ne)->fp_addr));
 
   teib_entry_adj_stack (ctx->ne, ai);
 
@@ -748,12 +807,14 @@ ipip_add_tunnel (ipip_transport_t transport,
   if (t->transport == IPIP_TRANSPORT_IP6 && !gm->ip6_protocol_registered)
     {
       ip6_register_protocol (IP_PROTOCOL_IP_IN_IP, ipip6_input_node.index);
+      ip6_register_protocol (IP_PROTOCOL_MPLS_IN_IP, ipip6_input_node.index);
       ip6_register_protocol (IP_PROTOCOL_IPV6, ipip6_input_node.index);
       gm->ip6_protocol_registered = true;
     }
   else if (t->transport == IPIP_TRANSPORT_IP4 && !gm->ip4_protocol_registered)
     {
       ip4_register_protocol (IP_PROTOCOL_IP_IN_IP, ipip4_input_node.index);
+      ip4_register_protocol (IP_PROTOCOL_MPLS_IN_IP, ipip4_input_node.index);
       ip4_register_protocol (IP_PROTOCOL_IPV6, ipip4_input_node.index);
       gm->ip4_protocol_registered = true;
     }