#include <vnet/ip/ip4_mtrie.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/lookup.h>
+#include <vnet/ip/ip_feature_registration.h>
typedef struct ip4_fib_t {
/* Hash table for each prefix length mapping. */
- uword * adj_index_by_dst_address[33];
-
- /* Temporary vectors for holding new/old values for hash_set. */
- uword * new_hash_values, * old_hash_values;
+ uword * fib_entry_by_dst_address[33];
/* Mtrie for fast lookups. Hash is used to maintain overlapping prefixes. */
ip4_fib_mtrie_t mtrie;
u32 index;
/* flow hash configuration */
- u32 flow_hash_config;
+ flow_hash_config_t flow_hash_config;
/* N-tuple classifier indices */
u32 fwd_classify_table_index;
struct ip4_main_t;
-typedef void (ip4_add_del_route_function_t)
- (struct ip4_main_t * im,
- uword opaque,
- ip4_fib_t * fib,
- u32 flags,
- ip4_address_t * address,
- u32 address_length,
- void * old_result,
- void * new_result);
-
-typedef struct {
- ip4_add_del_route_function_t * function;
- uword required_flags;
- uword function_opaque;
-} ip4_add_del_route_callback_t;
-
typedef void (ip4_add_del_interface_address_function_t)
(struct ip4_main_t * im,
uword opaque,
uword function_opaque;
} ip4_add_del_interface_address_callback_t;
-typedef enum {
- /* First check access list to either permit or deny this
- packet based on classification. */
- IP4_RX_FEATURE_CHECK_ACCESS,
-
- /* RPF check: verify that source address is reachable via
- RX interface or via any interface. */
- IP4_RX_FEATURE_SOURCE_CHECK_REACHABLE_VIA_RX,
- IP4_RX_FEATURE_SOURCE_CHECK_REACHABLE_VIA_ANY,
-
- /* IPSec */
- IP4_RX_FEATURE_IPSEC,
-
- /* vPath forwarding: won't return to call next feature
- so any feature needed before vPath forwarding must be prior
- to this entry */
- IP4_RX_FEATURE_VPATH,
-
- /* Must be last: perform forwarding lookup. */
- IP4_RX_FEATURE_LOOKUP,
-
- IP4_N_RX_FEATURE,
-} ip4_rx_feature_type_t;
+/**
+ * @brief IPv4 main type.
+ *
+ * State of IPv4 VPP processing including:
+ * - FIBs
+ * - Feature indices used in feature topological sort
+ * - Feature node run time references
+ */
typedef struct ip4_main_t {
ip_lookup_main_t lookup_main;
- /* Vector of FIBs. */
- ip4_fib_t * fibs;
+ /** Vector of FIBs. */
+ struct fib_table_t_ * fibs;
u32 fib_masks[33];
- /* Table index indexed by software interface. */
+ /** Table index indexed by software interface. */
u32 * fib_index_by_sw_if_index;
- /* Hash table mapping table id to fib index.
+ /* IP4 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. */
- ip4_add_del_route_callback_t * add_del_route_callbacks;
-
- /* Hash table mapping interface route rewrite adjacency index by sw if index. */
- uword * interface_route_adj_index_by_sw_if_index;
-
- /* Functions to call when interface address changes. */
+ /** Functions to call when interface address changes. */
ip4_add_del_interface_address_callback_t * add_del_interface_address_callbacks;
- /* Template used to generate IP4 ARP packets. */
+ /** Template used to generate IP4 ARP packets. */
vlib_packet_template_t ip4_arp_request_packet_template;
- /* Seed for Jenkins hash used to compute ip4 flow hash. */
+ /** Feature path configuration lists */
+ vnet_ip_feature_registration_t * next_uc_feature;
+ vnet_ip_feature_registration_t * next_mc_feature;
+ vnet_ip_feature_registration_t * next_tx_feature;
+
+ /** Built-in unicast feature path index, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_check_access;
+ /** Built-in unicast feature path index, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_source_reachable_via_rx;
+ /** Built-in unicast feature path index, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_source_reachable_via_any;
+ /** Built-in unicast feature path index, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_policer_classify;
+ /** Built-in unicast feature path index, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_ipsec;
+ /** Built-in unicast feature path index, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_vpath;
+ /** Built-in unicast feature path index, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_lookup;
+ /** Built-in unicast feature path index, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_source_and_port_range_check;
+ /** Built-in unicast feature path indice, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_rx_feature_drop;
+
+ /** Built-in multicast feature path index */
+ u32 ip4_multicast_rx_feature_vpath;
+ /** Built-in multicast feature path index */
+ u32 ip4_multicast_rx_feature_lookup;
+ /** Built-in multicast feature path indices */
+ u32 ip4_multicast_rx_feature_drop;
+
+ /** Built-in unicast feature path index, see @ref ip_feature_init_cast() */
+ u32 ip4_unicast_tx_feature_source_and_port_range_check;
+
+ /** Built-in tx feature path index */
+ u32 ip4_tx_feature_interface_output;
+
+ /** Save results for show command */
+ char ** feature_nodes[VNET_N_IP_FEAT];
+
+ /** Seed for Jenkins hash used to compute ip4 flow hash. */
u32 flow_hash_seed;
+ /** @brief Template information for VPP generated packets */
struct {
- /* TTL to use for host generated packets. */
+ /** TTL to use for host generated packets. */
u8 ttl;
- /* TOS byte to use for host generated packets. */
+ /** TOS byte to use for host generated packets. */
u8 tos;
u8 pad[2];
} host_config;
} ip4_main_t;
-/* Global ip4 main structure. */
+/** Global ip4 main structure. */
extern ip4_main_t ip4_main;
-/* Global ip4 input node. Errors get attached to ip4 input node. */
+#define VNET_IP4_UNICAST_FEATURE_INIT(x,...) \
+ __VA_ARGS__ vnet_ip_feature_registration_t uc_##x; \
+static void __vnet_add_feature_registration_uc_##x (void) \
+ __attribute__((__constructor__)) ; \
+static void __vnet_add_feature_registration_uc_##x (void) \
+{ \
+ ip4_main_t * im = &ip4_main; \
+ uc_##x.next = im->next_uc_feature; \
+ im->next_uc_feature = &uc_##x; \
+} \
+__VA_ARGS__ vnet_ip_feature_registration_t uc_##x
+
+#define VNET_IP4_MULTICAST_FEATURE_INIT(x,...) \
+ __VA_ARGS__ vnet_ip_feature_registration_t mc_##x; \
+static void __vnet_add_feature_registration_mc_##x (void) \
+ __attribute__((__constructor__)) ; \
+static void __vnet_add_feature_registration_mc_##x (void) \
+{ \
+ ip4_main_t * im = &ip4_main; \
+ mc_##x.next = im->next_mc_feature; \
+ im->next_mc_feature = &mc_##x; \
+} \
+__VA_ARGS__ vnet_ip_feature_registration_t mc_##x
+
+#define VNET_IP4_TX_FEATURE_INIT(x,...) \
+ __VA_ARGS__ vnet_ip_feature_registration_t tx_##x; \
+static void __vnet_add_feature_registration_tx_##x (void) \
+ __attribute__((__constructor__)) ; \
+static void __vnet_add_feature_registration_tx_##x (void) \
+{ \
+ ip4_main_t * im = &ip4_main; \
+ tx_##x.next = im->next_tx_feature; \
+ im->next_tx_feature = &tx_##x; \
+} \
+__VA_ARGS__ vnet_ip_feature_registration_t tx_##x
+
+
+/** Global ip4 input node. Errors get attached to ip4 input node. */
extern vlib_node_registration_t ip4_input_node;
extern vlib_node_registration_t ip4_lookup_node;
extern vlib_node_registration_t ip4_rewrite_node;
+extern vlib_node_registration_t ip4_rewrite_local_node;
extern vlib_node_registration_t ip4_arp_node;
-
-u32 ip4_fib_lookup_with_table (ip4_main_t * im, u32 fib_index, ip4_address_t * dst,
- u32 disable_default_route);
-
-always_inline u32
-ip4_fib_lookup_buffer (ip4_main_t * im, u32 fib_index, ip4_address_t * dst,
- vlib_buffer_t * b)
-{
- return ip4_fib_lookup_with_table (im, fib_index, dst,
- /* disable_default_route */ 0);
-}
-
-always_inline u32
-ip4_fib_lookup (ip4_main_t * im, u32 sw_if_index, ip4_address_t * dst)
-{
- u32 fib_index = vec_elt (im->fib_index_by_sw_if_index, sw_if_index);
- return ip4_fib_lookup_with_table (im, fib_index, dst,
- /* disable_default_route */ 0);
-}
+extern vlib_node_registration_t ip4_glean_node;
+extern vlib_node_registration_t ip4_midchain_node;
always_inline uword
-ip4_destination_matches_route (ip4_main_t * im,
- ip4_address_t * key,
- ip4_address_t * dest,
+ip4_destination_matches_route (const ip4_main_t * im,
+ const ip4_address_t * key,
+ const ip4_address_t * dest,
uword dest_length)
{ return 0 == ((key->data_u32 ^ dest->data_u32) & im->fib_masks[dest_length]); }
uword dest_length)
{ return 0 == ((clib_mem_unaligned (&key->data_u32, u32) ^ dest->data_u32) & im->fib_masks[dest_length]); }
-always_inline void
-ip4_src_address_for_packet (ip4_main_t * im, vlib_buffer_t * p, ip4_address_t * src, u32 sw_if_index)
+always_inline int
+ip4_src_address_for_packet (ip_lookup_main_t * lm,
+ u32 sw_if_index,
+ ip4_address_t * src)
{
- ip_lookup_main_t * lm = &im->lookup_main;
- ip_interface_address_t * ia = ip_interface_address_for_packet (lm, p, sw_if_index);
- ip4_address_t * a = ip_interface_address_get_address (lm, ia);
- *src = a[0];
+ 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);
+ ip4_address_t *if_ip =
+ ip_interface_address_get_address(lm, if_add);
+ *src = *if_ip;
+ return 0;
+ }
+ else
+ {
+ ASSERT(0);
+ src->as_u32 = 0;
+ }
+ return (!0);
}
/* Find interface address which matches destination. */
return result;
}
+ip4_address_t *
+ip4_interface_first_address (ip4_main_t * im, u32 sw_if_index,
+ ip_interface_address_t ** result_ia);
+
clib_error_t *
ip4_add_del_interface_address (vlib_main_t * vm, u32 sw_if_index,
ip4_address_t * address, u32 address_length,
u32 is_del);
-int ip4_address_compare (ip4_address_t * a1, ip4_address_t * a2);
-
-/* Add/del a route to the FIB. */
-
-#define IP4_ROUTE_FLAG_ADD (0 << 0)
-#define IP4_ROUTE_FLAG_DEL (1 << 0)
-#define IP4_ROUTE_FLAG_TABLE_ID (0 << 1)
-#define IP4_ROUTE_FLAG_FIB_INDEX (1 << 1)
-#define IP4_ROUTE_FLAG_KEEP_OLD_ADJACENCY (1 << 2)
-#define IP4_ROUTE_FLAG_NO_REDISTRIBUTE (1 << 3)
-/* Not last add/del in group. Facilities batching requests into packets. */
-#define IP4_ROUTE_FLAG_NOT_LAST_IN_GROUP (1 << 4)
-/* Dynamic route created via ARP reply. */
-#define IP4_ROUTE_FLAG_NEIGHBOR (1 << 5)
-
-typedef struct {
- /* IP4_ROUTE_FLAG_* */
- u32 flags;
-
- /* Either index of fib or table_id to hash and get fib.
- IP4_ROUTE_FLAG_FIB_INDEX specifies index; otherwise table_id is assumed. */
- u32 table_index_or_table_id;
-
- /* Destination address (prefix) and length. */
- ip4_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;
-} ip4_add_del_route_args_t;
-
-/**
- * \brief Get or create an IPv4 fib.
- *
- * Get or create an IPv4 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
- * ip4_main pointer.
- * \param table_index_or_id
- * The table index if \c IP4_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, 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 IP4_ROUTE_FLAG_FIB_INDEX is set, \p table_index_or_id
- * is considered as the fib index, and the fib ID otherwise.
- * \returns A pointer to the retrieved or created fib.
- *
- * \remark When getting a fib with the fib index, the fib MUST already exist.
- */
-ip4_fib_t *
-find_ip4_fib_by_table_index_or_id (ip4_main_t * im,
- u32 table_index_or_id, u32 flags);
-
-void ip4_add_del_route (ip4_main_t * im, ip4_add_del_route_args_t * args);
-
-void ip4_add_del_route_next_hop (ip4_main_t * im,
- u32 flags,
- ip4_address_t * dst_address,
- u32 dst_address_length,
- ip4_address_t * next_hop,
- u32 next_hop_sw_if_index,
- u32 next_hop_weight, u32 adj_index,
- u32 explicit_fib_index);
-
-void *
-ip4_get_route (ip4_main_t * im,
- u32 fib_index_or_table_id,
- u32 flags,
- u8 * address,
- u32 address_length);
-
void
-ip4_foreach_matching_route (ip4_main_t * im,
- u32 table_index_or_table_id,
- u32 flags,
- ip4_address_t * address,
- u32 address_length,
- ip4_address_t ** results,
- u8 ** result_lengths);
-
-void ip4_delete_matching_routes (ip4_main_t * im,
- u32 table_index_or_table_id,
- u32 flags,
- ip4_address_t * address,
- u32 address_length);
-
-void ip4_maybe_remap_adjacencies (ip4_main_t * im,
- u32 table_index_or_table_id,
- u32 flags);
-
-void ip4_adjacency_set_interface_route (vnet_main_t * vnm,
- ip_adjacency_t * adj,
- u32 sw_if_index,
- u32 if_address_index);
+ip4_sw_interface_enable_disable (u32 sw_if_index,
+ u32 is_enable);
+
+int ip4_address_compare (ip4_address_t * a1, ip4_address_t * a2);
/* Send an ARP request to see if given destination is reachable on given interface. */
clib_error_t *
serialize_function_t serialize_vnet_ip4_main, unserialize_vnet_ip4_main;
-int vnet_set_ip4_flow_hash (u32 table_id, u32 flow_hash_config);
+int vnet_set_ip4_flow_hash (u32 table_id, flow_hash_config_t flow_hash_config);
void ip4_mtrie_init (ip4_fib_mtrie_t * m);
/* Compute flow hash. We'll use it to select which adjacency to use for this
flow. And other things. */
always_inline u32
-ip4_compute_flow_hash (ip4_header_t * ip, u32 flow_hash_config)
+ip4_compute_flow_hash (const ip4_header_t * ip,
+ flow_hash_config_t flow_hash_config)
{
tcp_header_t * tcp = (void *) (ip + 1);
u32 a, b, c, t1, t2;
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