#include <vnet/ip/format.h>
#include <vnet/fib/fib_entry.h>
#include <vnet/fib/fib_table.h>
-#include <vnet/fib/fib_urpf_list.h>
#include <vnet/ip/lookup.h>
#include <vnet/dpo/load_balance.h>
+#include <vppinfra/bihash_24_8.h>
+#include <vppinfra/bihash_template.h>
+
+/*
+ * Default size of the ip6 fib hash table
+ */
+#define IP6_FIB_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
+#define IP6_FIB_DEFAULT_HASH_MEMORY_SIZE (32<<20)
+
+/**
+ * Enumeration of the FIB table instance types
+ */
+typedef enum ip6_fib_table_instance_type_t_
+{
+ /**
+ * This table stores the routes that are used to forward traffic.
+ * The key is the prefix, the result the adjacency to forward on.
+ */
+ IP6_FIB_TABLE_FWDING,
+ /**
+ * The table that stores ALL routes learned by the DP.
+ * Some of these routes may not be ready to install in forwarding
+ * at a given time.
+ * The key in this table is the prefix, the result is the fib_entry_t
+ */
+ IP6_FIB_TABLE_NON_FWDING,
+} ip6_fib_table_instance_type_t;
+
+#define IP6_FIB_NUM_TABLES (IP6_FIB_TABLE_NON_FWDING+1)
+
+/**
+ * A representation of a single IP6 table
+ */
+typedef struct ip6_fib_table_instance_t_
+{
+ /* The hash table */
+ clib_bihash_24_8_t ip6_hash;
+
+ /* bitmap / refcounts / vector of mask widths to search */
+ uword *non_empty_dst_address_length_bitmap;
+ u8 *prefix_lengths_in_search_order;
+ i32 dst_address_length_refcounts[129];
+} ip6_fib_table_instance_t;
+
+/**
+ * The two FIB tables; fwding and non-fwding
+ */
+extern ip6_fib_table_instance_t ip6_fib_table[IP6_FIB_NUM_TABLES];
extern fib_node_index_t ip6_fib_table_lookup(u32 fib_index,
const ip6_address_t *addr,
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
fib_table_walk_fn_t fn,
void *ctx);
-/**
- * @brief returns number of links on which src is reachable.
- */
-always_inline int
-ip6_urpf_loose_check (ip6_main_t * im,
- vlib_buffer_t * b,
- ip6_header_t * i)
+always_inline u32
+ip6_fib_table_fwding_lookup (u32 fib_index,
+ const ip6_address_t * dst)
{
- const load_balance_t *lb0;
- index_t lbi;
+ ip6_fib_table_instance_t *table;
+ clib_bihash_kv_24_8_t kv, value;
+ int i, len;
+ int rv;
+ u64 fib;
- lbi = ip6_fib_table_fwding_lookup_with_if_index(
- im,
- vnet_buffer (b)->sw_if_index[VLIB_RX],
- &i->src_address);
+ table = &ip6_fib_table[IP6_FIB_TABLE_FWDING];
+ len = vec_len (table->prefix_lengths_in_search_order);
- lb0 = load_balance_get(lbi);
+ 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 = clib_bihash_search_inline_2_24_8(&table->ip6_hash, &kv, &value);
+ if (rv == 0)
+ return value.value;
+ }
- return (fib_urpf_check_size (lb0->lb_urpf));
+ /* default route is always present */
+ ASSERT(0);
+ return 0;
}
+/**
+ * @brief Walk all entries in a sub-tree of the FIB table
+ * N.B: This is NOT safe to deletes. If you need to delete walk the whole
+ * table and store elements in a vector, then delete the elements
+ */
+extern void ip6_fib_table_sub_tree_walk(u32 fib_index,
+ const fib_prefix_t *root,
+ fib_table_walk_fn_t fn,
+ void *ctx);
+
/**
* @brief return the DPO that the LB stacks on.
*/
* \returns A pointer to the retrieved or created fib.
*
*/
-extern u32 ip6_fib_table_find_or_create_and_lock(u32 table_id);
-extern u32 ip6_fib_table_create_and_lock(void);
+extern u32 ip6_fib_table_find_or_create_and_lock(u32 table_id,
+ fib_source_t src);
+extern u32 ip6_fib_table_create_and_lock(fib_source_t src,
+ fib_table_flags_t flags,
+ u8* desc);
+
+extern u8 *format_ip6_fib_table_memory(u8 * s, va_list * args);
static inline ip6_fib_t *
ip6_fib_get (fib_node_index_t index)
{
ASSERT(!pool_is_free_index(ip6_main.fibs, index));
- return (&pool_elt_at_index (ip6_main.fibs, index)->v6);
+ return (pool_elt_at_index (ip6_main.v6_fibs, index));
}
static inline
extern u32 ip6_fib_table_get_index_for_sw_if_index(u32 sw_if_index);
-extern flow_hash_config_t ip6_fib_table_get_flow_hash_config(u32 fib_index);
-
#endif
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