ip: Path MTU

[vpp.git] / src / vnet / fib / fib_path.c

diff --git a/src/vnet/fib/fib_path.c b/src/vnet/fib/fib_path.c
index 6b1e833..01140d5 100644 (file)
--- a/src/vnet/fib/fib_path.c
+++ b/src/vnet/fib/fib_path.c
@@ -106,17 +106,8 @@ typedef enum fib_path_type_t_ {
      * via a DVR.
      */
     FIB_PATH_TYPE_DVR,
-    /**
-     * Marker. Add new types before this one, then update it.
-     */
-    FIB_PATH_TYPE_LAST = FIB_PATH_TYPE_BIER_FMASK,
 } __attribute__ ((packed)) fib_path_type_t;
 
-/**
- * The maximum number of path_types
- */
-#define FIB_PATH_TYPE_MAX (FIB_PATH_TYPE_LAST + 1)
-
 #define FIB_PATH_TYPES {                                       \
     [FIB_PATH_TYPE_ATTACHED_NEXT_HOP] = "attached-nexthop",    \
     [FIB_PATH_TYPE_ATTACHED]          = "attached",            \
@@ -133,11 +124,6 @@ typedef enum fib_path_type_t_ {
     [FIB_PATH_TYPE_DVR]               = "dvr",                 \
 }
 
-#define FOR_EACH_FIB_PATH_TYPE(_item)           \
-    for (_item = FIB_PATH_TYPE_FIRST;           \
-         _item <= FIB_PATH_TYPE_LAST;           \
-         _item++)
-
 /**
  * Enurmeration of path operational (i.e. derived) attributes
  */
@@ -154,10 +140,6 @@ typedef enum fib_path_oper_attribute_t_ {
      * The path is resolved
      */
     FIB_PATH_OPER_ATTRIBUTE_RESOLVED,
-    /**
-     * The path is attached, despite what the next-hop may say.
-     */
-    FIB_PATH_OPER_ATTRIBUTE_ATTACHED,
     /**
      * The path has become a permanent drop.
      */
@@ -192,7 +174,6 @@ typedef enum fib_path_oper_flags_t_ {
     FIB_PATH_OPER_FLAG_RECURSIVE_LOOP = (1 << FIB_PATH_OPER_ATTRIBUTE_RECURSIVE_LOOP),
     FIB_PATH_OPER_FLAG_DROP = (1 << FIB_PATH_OPER_ATTRIBUTE_DROP),
     FIB_PATH_OPER_FLAG_RESOLVED = (1 << FIB_PATH_OPER_ATTRIBUTE_RESOLVED),
-    FIB_PATH_OPER_FLAG_ATTACHED = (1 << FIB_PATH_OPER_ATTRIBUTE_ATTACHED),
 } __attribute__ ((packed)) fib_path_oper_flags_t;
 
 /**
@@ -259,6 +240,10 @@ typedef struct fib_path_t_ {
            u32 fp_interface;
        } attached_next_hop;
        struct {
+           /**
+            * The Connected local address
+            */
+           fib_prefix_t fp_connected;
            /**
             * The interface
             */
@@ -282,16 +267,10 @@ typedef struct fib_path_t_ {
                     mpls_eos_bit_t fp_eos;
                 };
            } fp_nh;
-            union {
-                /**
-                 * The FIB table index in which to find the next-hop.
-                 */
-                fib_node_index_t fp_tbl_id;
-                /**
-                 * The BIER FIB the fmask is in
-                 */
-                index_t fp_bier_fib;
-            };
+            /**
+             * The FIB table index in which to find the next-hop.
+             */
+            fib_node_index_t fp_tbl_id;
        } recursive;
        struct {
             /**
@@ -369,7 +348,7 @@ typedef struct fib_path_t_ {
     STRUCT_MARK(path_hash_end);
 
     /**
-     * Memebers in this last section represent information that is
+     * Members in this last section represent information that is
      * dervied during resolution. It should not be copied to new paths
      * nor compared.
      */
@@ -746,7 +725,7 @@ fib_path_attached_get_adj (fib_path_t *path,
 
         ai = adj_glean_add_or_lock(nh_proto, link,
                                    path->attached.fp_interface,
-                                   NULL);
+                                   &path->attached.fp_connected);
         dpo_set(dpo, DPO_ADJACENCY_GLEAN, vnet_link_to_dpo_proto(link), ai);
         adj_unlock(ai);
     }
@@ -1020,6 +999,7 @@ fib_path_back_walk_notify (fib_node_t *node,
                &path->fp_dpo);
        }
        if ((FIB_NODE_BW_REASON_FLAG_ADJ_UPDATE & ctx->fnbw_reason) ||
+            (FIB_NODE_BW_REASON_FLAG_ADJ_MTU    & ctx->fnbw_reason) ||
             (FIB_NODE_BW_REASON_FLAG_ADJ_DOWN   & ctx->fnbw_reason))
        {
            /*
@@ -1276,6 +1256,8 @@ fib_path_route_flags_to_cfg_flags (const fib_route_path_t *rpath)
        cfg_flags |= FIB_PATH_CFG_FLAG_ICMP_UNREACH;
     if (rpath->frp_flags & FIB_ROUTE_PATH_ICMP_PROHIBIT)
        cfg_flags |= FIB_PATH_CFG_FLAG_ICMP_PROHIBIT;
+    if (rpath->frp_flags & FIB_ROUTE_PATH_GLEAN)
+       cfg_flags |= FIB_PATH_CFG_FLAG_GLEAN;
 
     return (cfg_flags);
 }
@@ -1379,6 +1361,12 @@ fib_path_create (fib_node_index_t pl_index,
         path->fp_type = FIB_PATH_TYPE_SPECIAL;
         path->classify.fp_classify_table_id = rpath->frp_classify_table_id;
     }
+    else if (path->fp_cfg_flags & FIB_PATH_CFG_FLAG_GLEAN)
+    {
+        path->fp_type = FIB_PATH_TYPE_ATTACHED;
+        path->attached.fp_interface = rpath->frp_sw_if_index;
+        path->attached.fp_connected = rpath->frp_connected;
+    }
     else if (~0 != rpath->frp_sw_if_index)
     {
         if (ip46_address_is_zero(&rpath->frp_addr))
@@ -2119,7 +2107,7 @@ fib_path_resolve (fib_node_index_t path_index)
         break;
     }
     case FIB_PATH_TYPE_DVR:
-        dvr_dpo_add_or_lock(path->attached.fp_interface,
+        dvr_dpo_add_or_lock(path->dvr.fp_interface,
                             path->fp_nh_proto,
                             &path->fp_dpo);
         break;
@@ -2834,11 +2822,11 @@ show_fib_path_command (vlib_main_t * vm,
     else
     {
        vlib_cli_output (vm, "FIB Paths");
-       pool_foreach_index (pi, fib_path_pool,
-       ({
+       pool_foreach_index (pi, fib_path_pool)
+        {
            vlib_cli_output (vm, "%U", format_fib_path, pi, 0,
                              FIB_PATH_FORMAT_FLAGS_NONE);
-       }));
+       }
     }
 
     return (NULL);