fib: fib api updates
[vpp.git] / src / vnet / fib / fib_table.c
index ff42804..3778fa9 100644 (file)
@@ -181,8 +181,7 @@ fib_table_post_insert_actions (fib_table_t *fib_table,
        return;
 
     /*
-     * find and inform the covering entry that a new more specific
-     * has been inserted beneath it
+     * find  the covering entry
      */
     fib_entry_cover_index = fib_table_get_less_specific_i(fib_table, prefix);
     /*
@@ -190,8 +189,26 @@ fib_table_post_insert_actions (fib_table_t *fib_table,
      */
     if (fib_entry_cover_index != fib_entry_index)
     {
-       fib_entry_cover_change_notify(fib_entry_cover_index,
-                                     fib_entry_index);
+        /*
+         * push any inherting sources from the cover onto the covered
+         */
+        fib_entry_inherit(fib_entry_cover_index,
+                          fib_entry_index);
+
+        /*
+         * inform the covering entry that a new more specific
+         * has been inserted beneath it.
+         * If the prefix that has been inserted is a host route
+         * then it is not possible that it will be the cover for any
+         * other entry, so we can elide the walk. This is particularly
+         * beneficial since there are often many host entries sharing the
+         * same cover (i.e. ADJ or RR sourced entries).
+         */
+        if (!fib_entry_is_host(fib_entry_index))
+        {
+            fib_entry_cover_change_notify(fib_entry_cover_index,
+                                          fib_entry_index);
+        }
     }
 }
 
@@ -464,7 +481,7 @@ fib_table_entry_special_remove (u32 fib_index,
  */
 static void
 fib_table_route_path_fixup (const fib_prefix_t *prefix,
-                            fib_entry_flag_t eflags,
+                            fib_entry_flag_t *eflags,
                            fib_route_path_t *path)
 {
     /*
@@ -479,25 +496,36 @@ fib_table_route_path_fixup (const fib_prefix_t *prefix,
         /* Prefix recurses via itse;f */
        path->frp_flags |= FIB_ROUTE_PATH_DROP;
     }
-    if (fib_prefix_is_host(prefix) &&
+    if (!(path->frp_flags & FIB_ROUTE_PATH_LOCAL) &&
+        fib_prefix_is_host(prefix) &&
        ip46_address_is_zero(&path->frp_addr) &&
-       path->frp_sw_if_index != ~0)
+       path->frp_sw_if_index != ~0 &&
+        path->frp_proto != DPO_PROTO_ETHERNET)
     {
        path->frp_addr = prefix->fp_addr;
         path->frp_flags |= FIB_ROUTE_PATH_ATTACHED;
     }
-    if (eflags & FIB_ENTRY_FLAG_DROP)
+    if (*eflags & FIB_ENTRY_FLAG_DROP)
     {
        path->frp_flags |= FIB_ROUTE_PATH_DROP;
     }
-    if (eflags & FIB_ENTRY_FLAG_LOCAL)
+    if (*eflags & FIB_ENTRY_FLAG_LOCAL)
     {
        path->frp_flags |= FIB_ROUTE_PATH_LOCAL;
     }
-    if (eflags & FIB_ENTRY_FLAG_EXCLUSIVE)
+    if (*eflags & FIB_ENTRY_FLAG_EXCLUSIVE)
     {
        path->frp_flags |= FIB_ROUTE_PATH_EXCLUSIVE;
     }
+    if (path->frp_flags & FIB_ROUTE_PATH_LOCAL)
+    {
+        *eflags |= FIB_ENTRY_FLAG_LOCAL;
+
+        if (path->frp_sw_if_index != ~0)
+        {
+            *eflags |= FIB_ENTRY_FLAG_CONNECTED;
+        }
+    }
 }
 
 fib_node_index_t
@@ -505,12 +533,12 @@ fib_table_entry_path_add (u32 fib_index,
                          const fib_prefix_t *prefix,
                          fib_source_t source,
                          fib_entry_flag_t flags,
-                         fib_protocol_t next_hop_proto,
+                         dpo_proto_t next_hop_proto,
                          const ip46_address_t *next_hop,
                          u32 next_hop_sw_if_index,
                          u32 next_hop_fib_index,
                          u32 next_hop_weight,
-                         mpls_label_t *next_hop_labels,
+                         fib_mpls_label_t *next_hop_labels,
                          fib_route_path_flags_t path_flags)
 {
     fib_route_path_t path = {
@@ -520,6 +548,7 @@ fib_table_entry_path_add (u32 fib_index,
        .frp_fib_index = next_hop_fib_index,
        .frp_weight = next_hop_weight,
        .frp_flags = path_flags,
+        .frp_rpf_id = INDEX_INVALID,
        .frp_label_stack = next_hop_labels,
     };
     fib_node_index_t fib_entry_index;
@@ -539,7 +568,7 @@ fib_table_entry_path_add2 (u32 fib_index,
                           const fib_prefix_t *prefix,
                           fib_source_t source,
                           fib_entry_flag_t flags,
-                          fib_route_path_t *rpath)
+                          fib_route_path_t *rpaths)
 {
     fib_node_index_t fib_entry_index;
     fib_table_t *fib_table;
@@ -548,16 +577,16 @@ fib_table_entry_path_add2 (u32 fib_index,
     fib_table = fib_table_get(fib_index, prefix->fp_proto);
     fib_entry_index = fib_table_lookup_exact_match_i(fib_table, prefix);
 
-    for (ii = 0; ii < vec_len(rpath); ii++)
+    for (ii = 0; ii < vec_len(rpaths); ii++)
     {
-       fib_table_route_path_fixup(prefix, flags, &rpath[ii]);
+       fib_table_route_path_fixup(prefix, &flags, &rpaths[ii]);
     }
 
     if (FIB_NODE_INDEX_INVALID == fib_entry_index)
     {
        fib_entry_index = fib_entry_create(fib_index, prefix,
                                           source, flags,
-                                          rpath);
+                                          rpaths);
 
        fib_table_entry_insert(fib_table, prefix, fib_entry_index);
         fib_table->ft_src_route_counts[source]++;
@@ -567,7 +596,7 @@ fib_table_entry_path_add2 (u32 fib_index,
         int was_sourced;
 
         was_sourced = fib_entry_is_sourced(fib_entry_index, source);
-       fib_entry_path_add(fib_entry_index, source, flags, rpath);;
+       fib_entry_path_add(fib_entry_index, source, flags, rpaths);;
 
         if (was_sourced != fib_entry_is_sourced(fib_entry_index, source))
         {
@@ -582,7 +611,7 @@ void
 fib_table_entry_path_remove2 (u32 fib_index,
                              const fib_prefix_t *prefix,
                              fib_source_t source,
-                             fib_route_path_t *rpath)
+                             fib_route_path_t *rpaths)
 {
     /*
      * 1 is it present
@@ -591,8 +620,8 @@ fib_table_entry_path_remove2 (u32 fib_index,
      *      no => cover walk
      */
     fib_node_index_t fib_entry_index;
+    fib_route_path_t *rpath;
     fib_table_t *fib_table;
-    u32 ii;
 
     fib_table = fib_table_get(fib_index, prefix->fp_proto);
     fib_entry_index = fib_table_lookup_exact_match_i(fib_table, prefix);
@@ -622,16 +651,16 @@ fib_table_entry_path_remove2 (u32 fib_index,
         */
        fib_entry_lock(fib_entry_index);
 
-        for (ii = 0; ii < vec_len(rpath); ii++)
+        vec_foreach(rpath, rpaths)
         {
-            fib_table_route_path_fixup(
-                prefix,
-                fib_entry_get_flags_for_source(fib_entry_index,
-                                               source),
-                &rpath[ii]);
+            fib_entry_flag_t eflags;
+
+            eflags = fib_entry_get_flags_for_source(fib_entry_index,
+                                                    source);
+            fib_table_route_path_fixup(prefix, &eflags, rpath);
         }
 
-       src_flag = fib_entry_path_remove(fib_entry_index, source, rpath);
+       src_flag = fib_entry_path_remove(fib_entry_index, source, rpaths);
 
        if (!(FIB_ENTRY_SRC_FLAG_ADDED & src_flag))
        {
@@ -664,7 +693,7 @@ void
 fib_table_entry_path_remove (u32 fib_index,
                             const fib_prefix_t *prefix,
                             fib_source_t source,
-                            fib_protocol_t next_hop_proto,
+                            dpo_proto_t next_hop_proto,
                             const ip46_address_t *next_hop,
                             u32 next_hop_sw_if_index,
                             u32 next_hop_fib_index,
@@ -717,7 +746,7 @@ fib_table_entry_update (u32 fib_index,
 
     for (ii = 0; ii < vec_len(paths); ii++)
     {
-       fib_table_route_path_fixup(prefix, flags, &paths[ii]);
+       fib_table_route_path_fixup(prefix, &flags, &paths[ii]);
     }
     /*
      * sort the paths provided by the control plane. this means
@@ -755,12 +784,12 @@ fib_table_entry_update_one_path (u32 fib_index,
                                 const fib_prefix_t *prefix,
                                 fib_source_t source,
                                 fib_entry_flag_t flags,
-                                fib_protocol_t next_hop_proto,
+                                dpo_proto_t next_hop_proto,
                                 const ip46_address_t *next_hop,
                                 u32 next_hop_sw_if_index,
                                 u32 next_hop_fib_index,
                                 u32 next_hop_weight,
-                                mpls_label_t *next_hop_labels,
+                                fib_mpls_label_t *next_hop_labels,
                                 fib_route_path_flags_t path_flags)
 {
     fib_node_index_t fib_entry_index;
@@ -846,7 +875,8 @@ fib_table_entry_delete (u32 fib_index,
         * removing an etry that does not exist.
         * i'll allow it, but i won't like it.
         */
-       clib_warning("%U not in FIB", format_fib_prefix, prefix);
+        if (0)
+            clib_warning("%U not in FIB", format_fib_prefix, prefix);
     }
     else
     {
@@ -858,12 +888,20 @@ void
 fib_table_entry_delete_index (fib_node_index_t fib_entry_index,
                              fib_source_t source)
 {
-    fib_prefix_t prefix;
+    const fib_prefix_t *prefix;
 
-    fib_entry_get_prefix(fib_entry_index, &prefix);
+    prefix = fib_entry_get_prefix(fib_entry_index);
 
     fib_table_entry_delete_i(fib_entry_get_fib_index(fib_entry_index),
-                             fib_entry_index, &prefix, source);
+                             fib_entry_index, prefix, source);
+}
+
+u32
+fib_table_entry_get_stats_index (u32 fib_index,
+                                 const fib_prefix_t *prefix)
+{
+    return (fib_entry_get_stats_index(
+                fib_table_lookup_exact_match(fib_index, prefix)));
 }
 
 fib_node_index_t
@@ -944,19 +982,70 @@ fib_table_get_index_for_sw_if_index (fib_protocol_t proto,
 flow_hash_config_t
 fib_table_get_flow_hash_config (u32 fib_index,
                                fib_protocol_t proto)
+{
+    fib_table_t *fib;
+
+    fib = fib_table_get(fib_index, proto);
+
+    return (fib->ft_flow_hash_config);
+}
+
+flow_hash_config_t
+fib_table_get_default_flow_hash_config (fib_protocol_t proto)
 {
     switch (proto)
     {
     case FIB_PROTOCOL_IP4:
-       return (ip4_fib_table_get_flow_hash_config(fib_index));
     case FIB_PROTOCOL_IP6:
-       return (ip6_fib_table_get_flow_hash_config(fib_index));
+       return (IP_FLOW_HASH_DEFAULT);
+
     case FIB_PROTOCOL_MPLS:
-       return (mpls_fib_table_get_flow_hash_config(fib_index));
+       return (MPLS_FLOW_HASH_DEFAULT);
     }
-    return (0);
+
+    ASSERT(0);
+    return (IP_FLOW_HASH_DEFAULT);
 }
 
+/**
+ * @brief Table set flow hash config context.
+ */
+typedef struct fib_table_set_flow_hash_config_ctx_t_
+{
+    /**
+     * the flow hash config to set
+     */
+    flow_hash_config_t hash_config;
+} fib_table_set_flow_hash_config_ctx_t;
+
+static fib_table_walk_rc_t
+fib_table_set_flow_hash_config_cb (fib_node_index_t fib_entry_index,
+                                   void *arg)
+{
+    fib_table_set_flow_hash_config_ctx_t *ctx = arg;
+
+    fib_entry_set_flow_hash_config(fib_entry_index, ctx->hash_config);
+
+    return (FIB_TABLE_WALK_CONTINUE);
+}
+
+void
+fib_table_set_flow_hash_config (u32 fib_index,
+                                fib_protocol_t proto,
+                                flow_hash_config_t hash_config)
+{
+    fib_table_set_flow_hash_config_ctx_t ctx = {
+        .hash_config = hash_config,
+    };
+    fib_table_t *fib;
+
+    fib = fib_table_get(fib_index, proto);
+    fib->ft_flow_hash_config = hash_config;
+
+    fib_table_walk(fib_index, proto,
+                   fib_table_set_flow_hash_config_cb,
+                   &ctx);
+}
 
 u32
 fib_table_get_table_id_for_sw_if_index (fib_protocol_t proto,
@@ -971,6 +1060,17 @@ fib_table_get_table_id_for_sw_if_index (fib_protocol_t proto,
     return ((NULL != fib_table ? fib_table->ft_table_id : ~0));
 }
 
+u32
+fib_table_get_table_id (u32 fib_index,
+                        fib_protocol_t proto)
+{
+    fib_table_t *fib_table;
+
+    fib_table = fib_table_get(fib_index, proto);
+
+    return ((NULL != fib_table ? fib_table->ft_table_id : ~0));
+}
+
 u32
 fib_table_find (fib_protocol_t proto,
                u32 table_id)
@@ -987,9 +1087,11 @@ fib_table_find (fib_protocol_t proto,
     return (~0);
 }
 
-u32
-fib_table_find_or_create_and_lock (fib_protocol_t proto,
-                                  u32 table_id)
+static u32
+fib_table_find_or_create_and_lock_i (fib_protocol_t proto,
+                                     u32 table_id,
+                                     fib_source_t src,
+                                     const u8 *name)
 {
     fib_table_t *fib_table;
     fib_node_index_t fi;
@@ -997,13 +1099,13 @@ fib_table_find_or_create_and_lock (fib_protocol_t proto,
     switch (proto)
     {
     case FIB_PROTOCOL_IP4:
-       fi = ip4_fib_table_find_or_create_and_lock(table_id);
+       fi = ip4_fib_table_find_or_create_and_lock(table_id, src);
         break;
     case FIB_PROTOCOL_IP6:
-       fi = ip6_fib_table_find_or_create_and_lock(table_id);
+       fi = ip6_fib_table_find_or_create_and_lock(table_id, src);
         break;
     case FIB_PROTOCOL_MPLS:
-       fi = mpls_fib_table_find_or_create_and_lock(table_id);
+       fi = mpls_fib_table_find_or_create_and_lock(table_id, src);
         break;
     default:
         return (~0);        
@@ -1011,15 +1113,45 @@ fib_table_find_or_create_and_lock (fib_protocol_t proto,
 
     fib_table = fib_table_get(fi, proto);
 
-    fib_table->ft_desc = format(NULL, "%U-VRF:%d",
-                                format_fib_protocol, proto,
-                                table_id);
+    if (NULL == fib_table->ft_desc)
+    {
+        if (name && name[0])
+        {
+            fib_table->ft_desc = format(NULL, "%s", name);
+        }
+        else
+        {
+            fib_table->ft_desc = format(NULL, "%U-VRF:%d",
+                                        format_fib_protocol, proto,
+                                        table_id);
+        }
+    }
 
     return (fi);
 }
 
+u32
+fib_table_find_or_create_and_lock (fib_protocol_t proto,
+                                  u32 table_id,
+                                   fib_source_t src)
+{
+    return (fib_table_find_or_create_and_lock_i(proto, table_id,
+                                                src, NULL));
+}
+
+u32
+fib_table_find_or_create_and_lock_w_name (fib_protocol_t proto,
+                                          u32 table_id,
+                                          fib_source_t src,
+                                          const u8 *name)
+{
+    return (fib_table_find_or_create_and_lock_i(proto, table_id,
+                                                src, name));
+}
+
 u32
 fib_table_create_and_lock (fib_protocol_t proto,
+                           fib_source_t src,
                            const char *const fmt,
                            ...)
 {
@@ -1027,18 +1159,17 @@ fib_table_create_and_lock (fib_protocol_t proto,
     fib_node_index_t fi;
     va_list ap;
 
-    va_start(ap, fmt);
 
     switch (proto)
     {
     case FIB_PROTOCOL_IP4:
-       fi = ip4_fib_table_create_and_lock();
+       fi = ip4_fib_table_create_and_lock(src);
         break;
     case FIB_PROTOCOL_IP6:
-       fi = ip6_fib_table_create_and_lock();
+       fi = ip6_fib_table_create_and_lock(src, FIB_TABLE_FLAG_NONE, NULL);
         break;
      case FIB_PROTOCOL_MPLS:
-       fi = mpls_fib_table_create_and_lock();
+       fi = mpls_fib_table_create_and_lock(src);
         break;
    default:
         return (~0);        
@@ -1046,6 +1177,8 @@ fib_table_create_and_lock (fib_protocol_t proto,
 
     fib_table = fib_table_get(fi, proto);
 
+    va_start(ap, fmt);
+
     fib_table->ft_desc = va_format(fib_table->ft_desc, fmt, &ap);
 
     va_end(ap);
@@ -1091,28 +1224,59 @@ fib_table_walk (u32 fib_index,
     }
 }
 
+void
+fib_table_sub_tree_walk (u32 fib_index,
+                         fib_protocol_t proto,
+                         const fib_prefix_t *root,
+                         fib_table_walk_fn_t fn,
+                         void *ctx)
+{
+    switch (proto)
+    {
+    case FIB_PROTOCOL_IP4:
+       ip4_fib_table_sub_tree_walk(ip4_fib_get(fib_index), root, fn, ctx);
+       break;
+    case FIB_PROTOCOL_IP6:
+       ip6_fib_table_sub_tree_walk(fib_index, root, fn, ctx);
+       break;
+    case FIB_PROTOCOL_MPLS:
+       break;
+    }
+}
+
 void
 fib_table_unlock (u32 fib_index,
-                 fib_protocol_t proto)
+                 fib_protocol_t proto,
+                  fib_source_t source)
 {
     fib_table_t *fib_table;
 
     fib_table = fib_table_get(fib_index, proto);
-    fib_table->ft_locks--;
+    fib_table->ft_locks[source]--;
+    fib_table->ft_locks[FIB_TABLE_TOTAL_LOCKS]--;
 
-    if (0 == fib_table->ft_locks)
+    if (0 == fib_table->ft_locks[FIB_TABLE_TOTAL_LOCKS])
     {
+        /*
+         * no more locak from any source - kill it
+         */
        fib_table_destroy(fib_table);
     }
 }
+
 void
 fib_table_lock (u32 fib_index,
-               fib_protocol_t proto)
+               fib_protocol_t proto,
+                fib_source_t source)
 {
     fib_table_t *fib_table;
 
     fib_table = fib_table_get(fib_index, proto);
-    fib_table->ft_locks++;
+
+    ASSERT(fib_table->ft_locks[source] < (0xffff - 1));
+
+    fib_table->ft_locks[source]++;
+    fib_table->ft_locks[FIB_TABLE_TOTAL_LOCKS]++;
 }
 
 u32
@@ -1128,10 +1292,10 @@ fib_table_get_num_entries (u32 fib_index,
 }
 
 u8*
-format_fib_table_name (u8* s, va_list ap)
+format_fib_table_name (u8* s, va_list* ap)
 {
-    fib_node_index_t fib_index = va_arg(ap, fib_node_index_t);
-    fib_protocol_t proto = va_arg(ap, int); // int promotion
+    fib_node_index_t fib_index = va_arg(*ap, fib_node_index_t);
+    fib_protocol_t proto = va_arg(*ap, int); // int promotion
     fib_table_t *fib_table;
 
     fib_table = fib_table_get(fib_index, proto);
@@ -1158,7 +1322,7 @@ typedef struct fib_table_flush_ctx_t_
     fib_source_t ftf_source;
 } fib_table_flush_ctx_t;
 
-static int
+static fib_table_walk_rc_t
 fib_table_flush_cb (fib_node_index_t fib_entry_index,
                     void *arg)
 {
@@ -1168,7 +1332,7 @@ fib_table_flush_cb (fib_node_index_t fib_entry_index,
     {
         vec_add1(ctx->ftf_entries, fib_entry_index);
     }
-    return (1);
+    return (FIB_TABLE_WALK_CONTINUE);
 }
 
 
@@ -1194,3 +1358,13 @@ fib_table_flush (u32 fib_index,
 
     vec_free(ctx.ftf_entries);
 }
+
+u8 *
+format_fib_table_memory (u8 *s, va_list *args)
+{
+    s = format(s, "%U", format_ip4_fib_table_memory);
+    s = format(s, "%U", format_ip6_fib_table_memory);
+    s = format(s, "%U", format_mpls_fib_table_memory);
+
+    return (s);
+}