X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Ffib%2Fip6_fib.h;h=9789da4fa97af447648fb3aaf85569a492b982ad;hb=630198f04916deb35c5b7774823ae1a5dd168a6c;hp=2bf8ef7821c5a9ba8fd6c42e7e035050f55f8d6c;hpb=31426c6fee43caf18602a2a7e2ce32c3dda75a29;p=vpp.git

diff --git a/src/vnet/fib/ip6_fib.h b/src/vnet/fib/ip6_fib.h
index 2bf8ef7821c..9789da4fa97 100644
--- a/src/vnet/fib/ip6_fib.h
+++ b/src/vnet/fib/ip6_fib.h
@@ -53,9 +53,6 @@ extern void ip6_fib_table_fwding_dpo_remove(u32 fib_index,
 u32 ip6_fib_table_fwding_lookup_with_if_index(ip6_main_t * im,
 					      u32 sw_if_index,
 					      const ip6_address_t * dst);
-u32 ip6_fib_table_fwding_lookup(ip6_main_t * im,
-				u32 fib_index,
-				const ip6_address_t * dst);
 
 /**
  * @brief Walk all entries in a FIB table
@@ -66,6 +63,45 @@ extern void ip6_fib_table_walk(u32 fib_index,
                                fib_table_walk_fn_t fn,
                                void *ctx);
 
+always_inline u32
+ip6_fib_table_fwding_lookup (ip6_main_t * im,
+                             u32 fib_index,
+                             const ip6_address_t * dst)
+{
+    const ip6_fib_table_instance_t *table;
+    int i, len;
+    int rv;
+    BVT(clib_bihash_kv) kv, value;
+    u64 fib;
+
+    table = &ip6_main.ip6_table[IP6_FIB_TABLE_FWDING];
+    len = vec_len (table->prefix_lengths_in_search_order);
+
+    kv.key[0] = dst->as_u64[0];
+    kv.key[1] = dst->as_u64[1];
+    fib = ((u64)((fib_index))<<32);
+
+    for (i = 0; i < len; i++)
+    {
+	int dst_address_length = table->prefix_lengths_in_search_order[i];
+	ip6_address_t * mask = &ip6_main.fib_masks[dst_address_length];
+
+	ASSERT(dst_address_length >= 0 && dst_address_length <= 128);
+	//As lengths are decreasing, masks are increasingly specific.
+	kv.key[0] &= mask->as_u64[0];
+	kv.key[1] &= mask->as_u64[1];
+	kv.key[2] = fib | dst_address_length;
+
+	rv = BV(clib_bihash_search_inline_2)(&table->ip6_hash, &kv, &value);
+	if (rv == 0)
+	    return value.value;
+    }
+
+    /* default route is always present */
+    ASSERT(0);
+    return 0;
+}
+
 /**
  * @brief return the DPO that the LB stacks on.
  */