diff options
Diffstat (limited to 'vnet/vnet/ip/ip6.h')
| -rw-r--r-- | vnet/vnet/ip/ip6.h | 240 |
1 files changed, 74 insertions, 166 deletions
diff --git a/vnet/vnet/ip/ip6.h b/vnet/vnet/ip/ip6.h index f5f3de84..36be6494 100644 --- a/vnet/vnet/ip/ip6.h +++ b/vnet/vnet/ip/ip6.h @@ -71,27 +71,11 @@ typedef struct { u32 index; /* flow hash configuration */ - u32 flow_hash_config; + flow_hash_config_t flow_hash_config; } ip6_fib_t; struct ip6_main_t; -typedef void (ip6_add_del_route_function_t) - (struct ip6_main_t * im, - uword opaque, - ip6_fib_t * fib, - u32 flags, - ip6_address_t * address, - u32 address_length, - void * old_result, - void * new_result); - -typedef struct { - ip6_add_del_route_function_t * function; - uword required_flags; - uword function_opaque; -} ip6_add_del_route_callback_t; - typedef void (ip6_add_del_interface_address_function_t) (struct ip6_main_t * im, uword opaque, @@ -106,31 +90,63 @@ typedef struct { uword function_opaque; } ip6_add_del_interface_address_callback_t; -typedef struct ip6_main_t { - BVT(clib_bihash) ip6_lookup_table; +/** + * 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 adjacnecy 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) - ip_lookup_main_t lookup_main; +/** + * A represenation of a single IP6 table + */ +typedef struct ip6_fib_table_instance_t_ { + /* The hash table */ + BVT(clib_bihash) 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; + +typedef struct ip6_main_t { + /** + * The two FIB tables; fwding and non-fwding + */ + ip6_fib_table_instance_t ip6_table[IP6_FIB_NUM_TABLES]; + + ip_lookup_main_t lookup_main; - /* Vector of FIBs. */ - ip6_fib_t * fibs; + /* Pool of FIBs. */ + struct fib_table_t_ * fibs; + /* Network byte orders subnet mask for each prefix length */ ip6_address_t fib_masks[129]; /* Table index indexed by software interface. */ u32 * fib_index_by_sw_if_index; + /* IP6 enabled count by software interface */ + u8 * ip_enabled_by_sw_if_index; + /* Hash table mapping table id to fib index. ID space is not necessarily dense; index space is dense. */ uword * fib_index_by_table_id; - /* Vector of functions to call when routes are added/deleted. */ - ip6_add_del_route_callback_t * add_del_route_callbacks; - /* Hash table mapping interface rewrite adjacency index by sw if index. */ uword * interface_route_adj_index_by_sw_if_index; @@ -156,8 +172,10 @@ typedef struct ip6_main_t { u32 ip6_unicast_rx_feature_l2tp_decap; u32 ip6_unicast_rx_feature_vpath; u32 ip6_unicast_rx_feature_lookup; + u32 ip6_unicast_rx_feature_drop; /* Built-in multicast feature path indices */ + u32 ip6_multicast_rx_feature_drop; u32 ip6_multicast_rx_feature_vpath; u32 ip6_multicast_rx_feature_lookup; @@ -226,6 +244,8 @@ extern vlib_node_registration_t ip6_input_node; extern vlib_node_registration_t ip6_rewrite_node; extern vlib_node_registration_t ip6_rewrite_local_node; extern vlib_node_registration_t ip6_discover_neighbor_node; +extern vlib_node_registration_t ip6_glean_node; +extern vlib_node_registration_t ip6_midchain_node; extern vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node; @@ -242,40 +262,10 @@ typedef union { } up_down_event; } ip6_icmp_neighbor_discovery_event_data_t; -u32 ip6_fib_lookup (ip6_main_t * im, u32 sw_if_index, ip6_address_t * dst); -u32 ip6_fib_lookup_with_table (ip6_main_t * im, u32 fib_index, - ip6_address_t * dst); - -/** - * \brief Get or create an IPv6 fib. - * - * Get or create an IPv6 fib with the provided fib ID or index. - * The fib ID is a possibly-sparse user-defined value while - * the fib index defines the position of the fib in the fib vector. - * - * \param im - * ip6_main pointer. - * \param table_index_or_id - * The table index if \c IP6_ROUTE_FLAG_FIB_INDEX bit is set in \p flags. - * Otherwise, when set to \c ~0, an arbitrary and unused fib ID is picked - * and can be retrieved with \c ret->table_id. - * Otherwise, it is the fib ID to be used to retrieve or create the desired fib. - * \param flags - * Indicates whether \p table_index_or_id is the fib index or ID. - * When the bit \c IP6_ROUTE_FLAG_FIB_INDEX is set, \p table_index_or_id - * is considered as the fib index, and the fib ID otherwise. - * \return A pointer to the retrieved or created fib. - * - * \remark When getting a fib with the fib index, the fib MUST already exist. - */ -ip6_fib_t * find_ip6_fib_by_table_index_or_id (ip6_main_t * im, - u32 table_index_or_id, - u32 flags); - always_inline uword -ip6_destination_matches_route (ip6_main_t * im, - ip6_address_t * key, - ip6_address_t * dest, +ip6_destination_matches_route (const ip6_main_t * im, + const ip6_address_t * key, + const ip6_address_t * dest, uword dest_length) { int i; @@ -313,25 +303,26 @@ ip6_unaligned_destination_matches_route (ip6_main_t * im, } always_inline int -ip6_src_address_for_packet (ip6_main_t * im, vlib_buffer_t * p, ip6_address_t * src, u32 sw_if_index) -{ - ip_lookup_main_t * lm = &im->lookup_main; - ip_interface_address_t * ia = ip_interface_address_for_packet (lm, p, sw_if_index); - if (ia == NULL) - return -1; - ip6_address_t * a = ip_interface_address_get_address (lm, ia); - *src = a[0]; - return 0; -} - -always_inline u32 -ip6_src_lookup_for_packet (ip6_main_t * im, vlib_buffer_t * b, ip6_header_t * i) +ip6_src_address_for_packet (ip_lookup_main_t * lm, + u32 sw_if_index, + ip6_address_t * src) { - if (vnet_buffer (b)->ip.adj_index[VLIB_RX] == ~0) - vnet_buffer (b)->ip.adj_index[VLIB_RX] - = ip6_fib_lookup (im, vnet_buffer (b)->sw_if_index[VLIB_RX], - &i->src_address); - return vnet_buffer (b)->ip.adj_index[VLIB_RX]; + u32 if_add_index = + lm->if_address_pool_index_by_sw_if_index[sw_if_index]; + if (PREDICT_TRUE(if_add_index != ~0)) { + ip_interface_address_t *if_add = + pool_elt_at_index(lm->if_address_pool, if_add_index); + ip6_address_t *if_ip = + ip_interface_address_get_address(lm, if_add); + *src = *if_ip; + return (0); + } + else + { + src->as_u64[0] = 0; + src->as_u64[1] = 0; + } + return (!0); } /* Find interface address which matches destination. */ @@ -362,95 +353,12 @@ clib_error_t * ip6_add_del_interface_address (vlib_main_t * vm, u32 sw_if_index, ip6_address_t * address, u32 address_length, u32 is_del); +void +ip6_sw_interface_enable_disable (u32 sw_if_index, + u32 is_enable); int ip6_address_compare (ip6_address_t * a1, ip6_address_t * a2); -/* Add/del a route to the FIB. */ - -#define IP6_ROUTE_FLAG_ADD (0 << 0) -#define IP6_ROUTE_FLAG_DEL (1 << 0) -#define IP6_ROUTE_FLAG_TABLE_ID (0 << 1) -#define IP6_ROUTE_FLAG_FIB_INDEX (1 << 1) -#define IP6_ROUTE_FLAG_KEEP_OLD_ADJACENCY (1 << 2) -#define IP6_ROUTE_FLAG_NO_REDISTRIBUTE (1 << 3) -#define IP6_ROUTE_FLAG_NOT_LAST_IN_GROUP (1 << 4) -/* Dynamic route created via neighbor discovery. */ -#define IP6_ROUTE_FLAG_NEIGHBOR (1 << 5) - -typedef struct { - /* IP6_ROUTE_FLAG_* */ - u32 flags; - - /* Either index of fib or table_id to hash and get fib. - IP6_ROUTE_FLAG_FIB_INDEX specifies index; otherwise table_id is assumed. */ - u32 table_index_or_table_id; - - /* Destination address (prefix) and length. */ - ip6_address_t dst_address; - u32 dst_address_length; - - /* Adjacency to use for this destination. */ - u32 adj_index; - - /* If specified adjacencies to add and then - use for this destination. add_adj/n_add_adj - are override adj_index if specified. */ - ip_adjacency_t * add_adj; - u32 n_add_adj; -} ip6_add_del_route_args_t; - -void ip6_add_del_route (ip6_main_t * im, ip6_add_del_route_args_t * args); - -void ip6_add_del_route_next_hop (ip6_main_t * im, - u32 flags, - ip6_address_t * dst_address, - u32 dst_address_length, - ip6_address_t * next_hop, - u32 next_hop_sw_if_index, - u32 next_hop_weight, u32 adj_index, - u32 explicit_fib_index); - -u32 -ip6_route_get_next_hop_adj (ip6_main_t * im, - u32 fib_index, - ip6_address_t *next_hop, - u32 next_hop_sw_if_index, - u32 explicit_fib_index); - -u32 -ip6_get_route (ip6_main_t * im, - u32 fib_index_or_table_id, - u32 flags, - ip6_address_t * address, - u32 address_length); - -void -ip6_foreach_matching_route (ip6_main_t * im, - u32 table_index_or_table_id, - u32 flags, - ip6_address_t * address, - u32 address_length, - ip6_address_t ** results, - u8 ** result_length); - -void ip6_delete_matching_routes (ip6_main_t * im, - u32 table_index_or_table_id, - u32 flags, - ip6_address_t * address, - u32 address_length); - -void ip6_maybe_remap_adjacencies (ip6_main_t * im, - u32 table_index_or_table_id, - u32 flags); - -void ip6_adjacency_set_interface_route (vnet_main_t * vnm, - ip_adjacency_t * adj, - u32 sw_if_index, - u32 if_address_index); - -u32 -vnet_ip6_neighbor_glean_add(u32 fib_index, void * next_hop_arg); - clib_error_t * ip6_probe_neighbor (vlib_main_t * vm, ip6_address_t * dst, u32 sw_if_index); @@ -481,8 +389,6 @@ vnet_unset_ip6_ethernet_neighbor (vlib_main_t * vm, ip6_address_t * a, u8 * link_layer_address, uword n_bytes_link_layer_address); -void -vnet_ip6_fib_init (ip6_main_t * im, u32 fib_index); void ip6_link_local_address_from_ethernet_mac_address (ip6_address_t *ip, @@ -492,7 +398,8 @@ void ip6_ethernet_mac_address_from_link_local_address (u8 *mac, ip6_address_t *ip); -int vnet_set_ip6_flow_hash (u32 table_id, u32 flow_hash_config); +int vnet_set_ip6_flow_hash (u32 table_id, + flow_hash_config_t flow_hash_config); int ip6_neighbor_ra_config(vlib_main_t * vm, u32 sw_if_index, @@ -560,7 +467,8 @@ extern vlib_node_registration_t ip6_lookup_node; /* Compute flow hash. We'll use it to select which Sponge to use for this flow. And other things. */ always_inline u32 -ip6_compute_flow_hash (ip6_header_t * ip, u32 flow_hash_config) +ip6_compute_flow_hash (const ip6_header_t * ip, + flow_hash_config_t flow_hash_config) { tcp_header_t * tcp = (void *) (ip + 1); u64 a, b, c; |